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Full-automatic, digital and large frozen soil direct shear apparatus

InactiveCN102313673APrevent rustDigital display automatic control loading speedMaterial strength using steady shearing forcesFreeze thawingTemperature control
The invention which belongs to the field of civil engineering equipment relates to a full-automatic, digital and large frozen soil direct shear apparatus. The large frozen soil direct shear apparatus which comprises a shear box, a refrigeration system of an upper shear box, a refrigeration system of a lower shear box, a vertical servo loading and monitoring system, a horizontal servo loading and monitoring system, and a measurement and control system is to determine the shear strength of the freeze-thaw interface of the frozen soil or determine the shear strength of full frozen soil and full thawy soil. The size of a frozen soil sample in the embodiment of the invention is 305mm*305mm*200mm, static force and a layered compacting method are adopted to prepare remolded soil samples of different initial water contents and dry densities for shear tests; temperature control systems of the upper shear box and the lower shear box are adjusted to control the temperatures of soils in the shearboxes to guarantee the shear plane to be superposed with the freeze-thaw interface of the frozen soil sample. The direct shear apparatus of the present invention solves problems that the difficulty of testing the shear strength of the freeze-thaw interface is large, the shear tests of coarse grain soil are difficult and the like and provides reasonable design parameters for civil engineering and traffic engineering in cold or highly cold regions.
Owner:BEIJING JIAOTONG UNIV

Experimental device for concrete multifactor permanent stability under co-action of pulling stress and surroundings

The invention relates to a concrete multi-factor durability test device under the common effect of tensile stress and environment, wherein, the lower part of a pull rod (8) is connected with a lower pull plate (13), the upper part of the pull rod (8) penetrates an upper pull plate (7) and a limit plate (4), the upper pull plate (7) is penetrated on the pull rod (8) to be fixed by a lock nut (6), a screw cap (2) presses a stress sensor (3) on the limit plate by a spherical screw rod (1), a spring (5) is sheathed on the spherical screw rod (1) and is positioned between the limit plate and the upper pull plate, an upper stretching chuck (91) and a lower stretching chuck (92) are arranged between the upper pull plate and the lower pull plate (13), the upper stretching chuck (91) is connected with the spherical head part of the spherical screw rod (1), the lower stretching chuck (92) is connected with the spherical head part of a spherical pull rod (12), a dumbbell-shaped concrete sample (10) is positioned between the upper stretching chuck (91) and the lower stretching chuck (92), the dumbbell-shaped concrete sample is held by the stretching chucks, both sides of the dumbbell-shaped concrete sample (10) are provided with constant force holding instruments (11), and the constant force holding instruments are connected with a non-metallic ultrasonic testing instrument (14).
Owner:SOUTHEAST UNIV

Drilling method for circuit board

The invention discloses a drilling method for a circuit board and belongs to the technical field of circuit board production. The drilling method comprises the following steps of setting a positioning target and a directional target on the circuit board, drilling a positioning hole in the positioning target and drilling a directional hole in the directional target; enabling the number of the directional target to be one and arranging the directional target in an area which is outside a horizontal central line and a longitudinal central line; identifying the direction of the circuit board through the directional hole, enabling a pin to penetrate the positioning hole and installing and fixing the circuit board and a cover plate; drilling the circuit board in the front side and the rear side and enabling the drilled holes in the front side and the rear side to be through holes. The drilling method for the circuit board can achieve circuit board drilling with the high thickness-diameter ratio and obtain high accuracy hole location.
Owner:GUANGZHOU FASTPRINT CIRCUIT TECH +2

Rivet for friction-self piercing riveting (F-SPR) and F-SPR connecting system thereof

The invention discloses a rivet for friction-self piercing riveting (F-SPR) and an F-SPR connecting system thereof. The rivet comprises a semi-hollow rivet body and a rivet cap, wherein the lower surface of the rivet cap is connected with the semi-hollow rivet body; a wedge-shaped taper corner is arranged at the bottom end of the semi-hollow rivet body; chamfers for assembly and disassembly and a rotating driving structure are arranged on the edge of the upper end of the rivet cap; a locating structure is arranged in the center of the rivet cap; the rotating driving structure is a directed concave surface or a directed convex surface in central symmetry; and the locating structure is a convex surface or a concave surface in central symmetry and mirror symmetry. When the rivet is matched with a driving system for utilization, the driving rigidity and locating accuracy of the rivet during the F-SPR process can be improved, the problems that during the high-speed rotation process of the semi-hollow rivet, the stability is poor and the rivet axis and the rotation axis do not overlap are solved, the probability that a connector loses efficacy is reduced, the problem that a clearance is formed between the rivet and a panel is avoided, and the technological reliability of an F-SPR technology when connecting steel, aluminum, magnesium materials, composites and heterogeneous materials is guaranteed.
Owner:SHANGHAI JIAO TONG UNIV

Method for automatically adjusting inclination between image photographing module group sensor and lens

The invention provides a method for automatically adjusting inclination between an image photographing module group sensor and a lens. The method comprises the following steps that test light is provided via a light source and a scalar board; a positioning platform drives the lens to move relative to the sensor according to a preset step; an image acquisition system acquires and transmits MTF data of test light of an image photographing module group; curve fitting is performed on the MTF data so that highest point distance difference of the MTF data of a designated area is obtained and thus degree of inclination between the image photographing module group sensor and the lens is calculated; and the image photographing module group is corrected via the positioning platform according to the degree of inclination. Curve fitting is performed on a high-step defocus curve to predict the calculation result of a low-step defocus curve so that efficiency of the whole test is enhanced. Besides, a six-degree-of-freedom parallel positioning platform can be used as the positioning platform so that the center of the positioning platform is ensured to be overlapped with the center of the sensor, and thus inclination between the sensor and the lens is ensured to be corrected accurately and timely.
Owner:NINGBO SUNNY OPOTECH CO LTD

Feedback method of channel state information and user device

The embodiment of the invention discloses a feedback method of channel state information and a user device, which relates to the communication field and aims at solving the problems that large resources occupied by CSI (channel state information) of all cells participating in a multi-cell collaboration service mode are fed back, and collaboration gain can not be provided and the like. The technical scheme includes: acquiring target sub-bands within the working bandwidth range of a plurality of cells participating in a multi-cell collaboration service mode; according to the target sub-bands, calculating the CSI of the multiple cells participating in the multi-cell collaboration service mode; and transmitting the CSI of the multiple cells participating in the multi-cell collaboration service mode and the positions of the target sub-bands from a network side. The method and the device can be applied to the multi-cell collaboration service mode system.
Owner:趣无忧人力资源(上海)有限公司

Vertical shaft maglev wind power generator

A vertical shaft maglev wind power generator is composed of vanes, a rotary shaft, a power generator, a radial magnetic bearing, an axial TDOF magnetic bearing, an upper protection bearing, a lower protection bearing, an upper protection bearing retainer ring and a lower protection bearing retainer ring; the rotational part and the stationary part of the fan are not in mechanical contact, the mechanical friction in the fan is completely eliminated and the FDOF levitation of the fan rotor is realized. The axial magnetic bearing of the fan supplies gravity offset through 4 stator magnetic poles and the effect of a suction disc and performs axial translation and two radial rotational DOF control on the rotor; and the radial magnetic bearing finishes the two radial translation control of the fan rotor. The invention has reasonable layout of the components, completely eliminates the friction problem of the vertical shaft fan bearing, greatly reduces the starting wind speed of the wind power generator and improves the wind energy utilization rate.
Owner:BEIHANG UNIV

Device for installing externally-clamping probes of portable ultrasonic flow meter

The invention discloses a device for installing externally-clamping probes of a portable ultrasonic flow meter. The device comprises a pair of externally-clamping probes which are arranged on a pair of probe fixtures, wherein each probe fixture is arranged on the outer wall of a pipeline to be detected through a fixture fixing device; the middle shaft surface of each probe fixture and the axis ofthe pipeline to be detected are adjusted to be on the same plane by an adjusting device; each probe fixture comprises a support frame, a probe guide frame and a probe pressing device; the support frame and the middle shaft surface in the probe guide frame are overlapped and fastened together; an inner side gap between two sides of the probe guide frame is the same as the width of the probe, so that the middle shaft surface of the probe is automatically overlapped with the middle shaft surface of the probe guide frame, namely is overlapped with the middle shaft surface of the probe fixture, after the probe is guided into the probe guide frame; and the probe pressing device presses the probe to make the probe tightly attached to the outer wall of the pipeline to be detected. By the installation device, the probes can be accurately and conveniently positioned; and the device is easy and convenient to carry and install.
Owner:SHANGHAI JIAO TONG UNIV +1

Inner cork stoppling machine

The invention discloses an inner cork stoppling machine, which comprises a rack and a control unit, wherein an upper cork feed device and a lower cork feed device are arranged on the rack, an alignment device which is used for making an upper cork be aligned with a lower cork and an extruding device which extrudes the upper cork into the lower cork are arranged between the upper cork feed device and the lower cork feed device, the alignment device is positioned above the extruding device, one side of the extruding device is provided with a discharge device, and the discharge device is connected with the lower cork feed device; and the upper cork feed device, the lower cork feed device, the alignment device, the extruding device and the discharge device are respectively and electrically connected with the control unit. The invention has the following advantages that: the automated operation mode is realized, the working efficiency is improved, the labor force is reduced, and only one worker is required to be in charge of watching and operating the inner cork stoppling machine.
Owner:HANGZHOU SANJING ART CRAFT PLASTIC

Method for obtaining radial suspension centers of rotor of magnetic molecular pump

The invention discloses a method for obtaining radial suspension centers of a rotor of a magnetic molecular pump. The method is characterized by establishing a radial magnetic bearing coordinate system and a radial displacement sensor coordinate system with the radial magnetic bearing stator inner circle center and the radial displacement sensor stator inner circle center as the origins; obtaining deviations between the radial magnetic bearing stator inner circle center and the radial protection bearing stator inner circle center in the X and Y directions by obtaining a radial protection bearing stator inner circle center coordinate in the radial magnetic bearing coordinate system; obtaining the radial magnetic bearing stator inner circle center in the radial displacement sensor coordinate system according to the deviations; and adjusting the first and second radial suspension centers of the rotor to be in the first and second radial magnetic bearing stator inner circle centers through the above processes. The method has the effect of ensuring stable operation of the magnetic molecular pump system.
Owner:KYKY TECH +1

Robot tool central point calibration method using two-dimensional measurement functional tablet

The invention discloses a robot tool central point calibration method using a two-dimensional measurement functional tablet. A robot is controlled to enable a TCP to make contact with a measurement area of a calibration tool more than three times in different postures in the calibration process, joint coordinate information of the robot is recorded in the contact process, and the two-dimensional coordinates of the contact points in a measurement plane are output through the two-dimensional position measurement function of the calibration tool; the coordinates of the TCP in a robot tail end tool coordinate system are calculated according to measured joint rotation angle information of the robot and the coordinate data of the contact points on the tablet and in combination with the structural parameters of the robot, and the calibration accuracy is evaluated. According to the calibration method, the TCP of the robot does not need to coincide with the same fixed point multiple times, the point-point coincidence requirement is weakened to point-surface coincidence, and operation is easy. When the TCP of the robot has small deviation, autonomous calibration can be realized.
Owner:CENT SOUTH UNIV

Lever-type drawing device for testing anchoring performance of planting bar and implementation method thereof

InactiveCN102680321ASolve the test problem of planting bar anchorage performanceSolve test problemsMaterial strength using tensile/compressive forcesEngineeringSupport point
The invention relates to a lever-type drawing device for testing the anchoring performance of a planting bar and an implementation method thereof, which specifically belongs to the technical field of the reinforcement modification of civil engineering. The lever-type drawing device for testing the anchoring performance of the planting bar comprises a lever force measuring device which is arranged above a concrete substrate, wherein the lever force measuring device comprises a rigid crossbeam, a support point part of the rigid crossbeam is hinged with a support saddle, the lower end of the support saddle is rigidly connected with a pull pressure sensor, the other end of the pull pressure sensor is rigidly connected with the concrete substrate, one end of the rigid crossbeam is fixedly connected with the planting bar through a connection member, and the other end of the rigid crossbeam is connected with a loading device. Based on the lever principle and combining the equipment such as the pressure sensor, the drawing device for testing the anchoring performance of the chemical planting bar which is anchored in the concrete substrate and the implementation method thereof have remarkable advantages compared with the traditional method for testing the stress performance of an anchoring connection node.
Owner:HOHAI UNIV

Ankle joint rehabilitation mechanism with driving branch chains arranged obliquely

The invention provides an ankle joint rehabilitation mechanism with driving branch chains arranged obliquely and relates to the field of rehabilitation medicine instruments. The ankle joint rehabilitation mechanism comprises a base, a movable platform, the driving branch chains and a restraining branch chain. The restraining branch chain comprises a lower rotating connecting rod, a first symmetric connecting rod, a second symmetric connecting rod and an upper arc connecting rod, wherein the lower rotating connecting rod is connected with a central shaft of the base through a bearing. The movable platform comprises a foot baffle, an upper platform body, a lower platform body and a connecting piece located between the two platform bodies, wherein the position, relative to the upper platform body, of the feet can be adjusted through the foot baffle and the connecting piece. The driving branch chains comprise the first driving branch chain, the second driving branch chain and the third driving branch chain, and the three driving branch chains are UPS branch chains arranged obliquely with the same oblique angle. By means of the structure, the movable platform can rotate in three mutually orthogonal directions, and meanwhile it can be ensured that the rotating center of the movable platform coincides with the rotating center of the ankles. The ankle joint rehabilitation mechanism is simple, stable in driving and low in cost; in addition, the driving branch chains are arranged obliquely to avoid the singular configuration of the mechanism, and good kinematic performance is achieved.
Owner:BEIJING UNIV OF TECH

Directional static blasting construction method for foundation pit stratum and combined guiding device for directional static blasting construction method

The invention discloses a directional static blasting construction method for a foundation pit stratum and a combined guiding device for the directional static blasting construction method. The directional static blasting construction method for the foundation pit stratum comprises the first step of field testing, the second step of chemical hole opening arranging, the third step of chemical hole drilling, the fourth step of grout preparing, the fifth step of grout filling, the sixth step of combined guiding device arranging, the seventh step of blasting, slag discharging and combined guiding device recycling and the eighth step of dewatering maintaining. The combined guiding device for directional static blasting is formed by combining long-strip steel sheets and a metal square pipe with guiding square holes for the long-strip steel sheets to penetrate. The long-strip guiding steel sheets are placed in static blasting chemical holes, and consequently penetrating main cracks are generated by a rock mass in the width direction of the long-strip steel sheets. Meanwhile, compared with a conventional static blasting method, the distance of the chemical holes is increased by 1.3-1.5 times in the method, the effect of directional rock mass fracturing is achieved, and meanwhile the blasting efficiency is improved.
Owner:湖南航天建筑工程有限公司

Complex surface circuit conformal spray printing method and equipment

The invention belongs to the field of electric fluid dynamics spray printing, and discloses a complex surface circuit conformal spray printing method and equipment. The equipment comprises a spherical motor module, a translation module and a conformal spray printing module. The translation module drives the spherical motor module to move in an X-axis direction and a Y-axis direction in a plane; the conformal spray printing module comprises a spray head part and an electric signal part; the spray head part moves up and down so as to realize a freedom degree of a Z-axis direction; the electric signal part applies voltage on an ink fluid and an electrode ring in an ink cartridge; the spherical motor module rotates around the X-axis direction, the Y-axis direction and the Z-axis direction so as to realize six-degree-of-freedom motion of an object to be spray-printed; a curve surface base plate is grounded, so that the electric potential of the object to be sprayed-printed is zero; and the voltage applied in the ink fluid is higher than the voltage applied in the electrode ring, so that a gradient electric potential difference is formed on the ink fluid, the electrode ring and the object to be spray-printed. Through the complex surface circuit conformal spray printing method and the equipment provided by the invention, a conformal patterning electric spray-printing process of a complex surface is realized, an application range of the electric spray-printing process is improved, the manufacturing cost is reduced, and the printing accuracy is improved.
Owner:HUAZHONG UNIV OF SCI & TECH

Artillery barrel bore detecting system

The invention discloses an artillery barrel bore detecting system, which structurally comprises a centering mechanism and an inner diameter measurement mechanism both mounted on a shaft lever. The centering mechanism comprises a fixed plate fixed on the shaft lever, a plurality of umbrella ribs with end parts hinged to the fixed plate and circling the fixed plate, and an elastic support mechanism mounted on the shaft lever and used for propping open the umbrella ribs. The elastic support mechanism comprises a slide block connected onto the shaft lever in a sliding manner, a spring sleeved on the shaft lever in a penetrating manner, and a stop block fixedly connected to the shaft lever, wherein the spring is positioned between the slide block and the stop block, and a support arm connected with the umbrella ribs in a sliding manner is arranged on the slide block. The detecting system is convenient to assemble, adjust, and operate, is applicable to various barrels with a diameter ranging from 100mm to 155mm, and can be used for observing image information in a tube body while detecting tube inner diameter, so that the detection results can be more reliable.
Owner:PEOPLES LIBERATION ARMY ORDNANCE ENG COLLEGE

Locatable bilinear cumulative blasting device in smooth blasting hole and blasting method

ActiveCN105627848ALow costAccelerate the rate of excavationBlastingEngineeringRock tunnel
The invention provides a locatable bilinear cumulative blasting device in a smooth blasting hole and a blasting method. A push rod device can be arranged for pushing a bilinear cumulative explosive tube into the smooth blasting hole; the bilinear cumulative explosive tube can be rotationally regulated to make sure that the center line of a bilinear cumulative groove is overlapped with the center line of the smooth blasting hole and the outline of a tunnel; energy generated by explosion of explosives is intensively released along the outline direction of the tunnel, and a smooth and regular tunnel outline surface can be formed after explosion. The device and the method disclosed by the invention have the advantages of improving the structure of a center positioning device in the smooth blasting hole, reducing the contact area between the center positioning device and the smooth blasting hole, reducing the resistance generated by pushing the bilinear cumulative blasting device into the smooth blasting hole, realizing smooth hole mounting operation of the cumulative blasting device, satisfying the production and design requirements, also reducing damages caused to the surrounding rocks by explosion of the explosives, and lowering the support and protection costs of rock tunnels.
Owner:CHINA COAL TECH & ENG GRP HUAIBEIBLASTING TECHN RES INST

Test pipe piece line-marking device capable of adjusting angle and method

The invention relates to a deep sea pipeline test pipe piece line-marking device and method. The device can comprise a base, a line-marking pen rack detachably installed on the base and a line-markingpen detachably installed on the line-marking pen rack; two sliding rails which extend in the length direction and in parallel and are spaced are arranged on the base, at least two pairs of rolling bearing supports which are spaced in the length direction are arranged between the sliding rails, and a test pipe piece to be marked is supported by the rolling bearing supports and can roll; the line-marking pen rack comprises two trapezoid supports and an angle measuring arc frame, and the two trapezoid supports are correspondingly and slidably connected to the two sliding rails; the angle measuring arc frame is fixedly connected to the upper ends of the two trapezoid supports, a sliding groove with the front and the back communicating is formed in the angle measuring arc frame, wherein the sliding groove extends in the circumferential direction, at least one side face is provided with an angle mark scale ranging from 0 degree to 180 degrees, and at least one hollow pen tube capable of moving along the sliding groove is installed on the sliding groove; and the line-marking pen is movably arranged in the hollow pen tube in a friction mode. The device is simple in structure, convenient to use and high in precision.
Owner:JIMEI UNIV

Method of optimizing signal lines within circuit, optimizing apparatus, recording medium having stored therein optimizing program, and method of designing circuit and recording medium having stored therein program for designing circuit

A method for designing an integrated circuit such as a VLSI circuit, in particular optimizing delay of a signal transmitting through signal lines connecting a signal supplying source to each of elements, whereby skew can be decreased. The method can include determining whether the signal source satisfies a fan-out restriction if the signal source supplies a signal to all of the driven elements which are directly connected to the signal source, dividing the elements into groups so that the fan-out restriction is satisfied in each of the groups and each of the groups has the same or substantially same load capacity, when the signal source does not satisfy the fan-out restriction, and inserting into each group, a buffer having a size which makes the groups of elements satisfy the fan-out restriction. The dividing and the buffer inserting are repeated until a positive determination is delivered on the fan-out restriction.
Owner:SOCIONEXT INC

Method for accurately calculating screen coordinates of touch points in distortion projection plane of electronic white board

The invention relates to a method for accurately calculating screen coordinates of touch points in a distortion projection plane of an electronic white board and belongs to the technical field of electronic white boards. The method comprises the following steps: determining the constrained relationship among calibration points, touch points and the screen coordinates of touch points; using an electronic white board positioning device to acquire the coordinates of the calibration points and storing the coordinates of the calibration points; and taking use of the constrained relationship to calculate the screen coordinates Xdisp and Ydisp of the touch points. The method provided by the invention has the advantages of correctly calculating the screen coordinates of the touch points by only using the calibration points and ensuring the superposition of the positions of the touch points and a mouse in the projection plane in spite of such projection plane distortions as slope, vertical trapezoid and horizontal trapezoid, thus reducing the calculation amount and improving the timeliness of the system.
Owner:JILIN UNIV

Double-layer resin glazed tile

The invention belongs to the technical field of building material, and more particularly relates to a double-layer resin glazed tile which takes on a sheet shape or a plate shape and is formed by a plurality of wave peaks and / or wave troughs which are sequentially connected. The glazed tile is formed by a surface layer and a bottom layer, wherein the surface layer is formed by modified resin ASA, and the bottom layer is formed by 60-80% of polyvinyl chloride resin, 1-3% of foaming agent, 8-15% of shock-resistant modifying agent, 2-5% of lubricating agent and 9-17% of processing auxiliary agent by weight percent, wherein the foaming agent is azo-compound or / and sodium hydrogen carbonate, the shock-resistant modifying agent is chlorinated polyethylene, the lubricating agent is one or mixture of more in oxidized polyethlene wax, stearic acids or paraffin, and the processing auxiliary agent is one or mixture of more in ACR, compound stabilizer, calcium carbonate or pigment. The glazed tile is light in weight and durable, and has good effects of noise reduction and heat insulation.
Owner:ANHUI HONGLU STEEL CONSTR (GROUP) CO LTD

Side open type carriage welding turnover work center

The invention discloses a side open type carriage welding turnover work center belonging to automobile crane carriage welding displacement equipment. The turnover center comprises a side open welding positioner, a three-dimensional feeding trolley, a lifting platform and an electric control system, wherein the three-dimensional feeding trolley is located in the middle of the side open welding positioner, the lifting platform is arranged in front of the side open welding positioner, the three-dimensional feeding trolley is arranged on rails which are perpendicular to the side open welding positioner, and the electric control system is simultaneously connected with the three-dimensional feeding trolley, the lifting platform and the side open welding positioner. The side open type carriage welding turnover work center has the advantages that firstly, two side open tilters commonly use one feeding trolley, thus the turnover work center is compact in structure, secondly, the lateral faces of the tilters are open for realizing the positioning of work-pieces, thirdly, the work-pieces can be automatically clamped, and production efficiency are high, fourthly, 180-degree idle rotation can be realized in a turnover ring, which realizes the requirement that carriages are positively fed and reversely discharged, and fifthly, welding operations of workers are convenient.
Owner:XUZHOU HEAVY MASCH CO LTD

Portable pipeline automatic circumferential walking device and pipeline processing method

The invention discloses a portable pipeline automatic circumferential walking device and a pipeline processing method, which belong to the technical field of pipeline processing and construction. The portable pipeline automatic circumferential walking device consists of a circular rail, a walking mechanism and a control part. The circular rail consists of a rail and a grab for mounting the rail. The portable pipeline automatic circumferential walking device has the characteristics that one type of rail is adaptable to a plurality of types of pipe diameters, and a plurality of types of rails is adaptable to more pipe diameters in a matching mode. The walking mechanism consists of a machine frame, wheels, a chain tensioning mechanism, a driving motor system and a chain. The control part consists of a local controller and a remote controller. The local controller can adjust positive rotation and negative rotation of a motor, and can adjust the walking mechanism to perform clockwise rotation or counterclockwise rotation around a pipeline. The remote controller can control the walking mechanism at a distant place, and is compact and convenient. The portable pipeline automatic circumferential walking device is convenient to mount, has high walking accuracy, is not affected by whether the pipeline has a coating layer or not, and is suitable for meeting requirements on circumferential construction of an onsite pipeline.
Owner:宣邦机器人(苏州)有限公司

Sliding positioning guide device

The invention discloses a sliding positioning guide device which comprises an arc-shaped fixing arm including an arc-shaped chute, an arc-shaped sliding arm matched with the arc-shaped chute, a positioning puncture needle matched with a positioning needle and a skeleton fixing part installed in a drill bit sleeve. The starting end of the arc-shaped fixing arm is provided with the drill bit sleeve radially extending along the arc-shaped fixing arm, and the drill bit sleeve is provided with a fixing screw for fixing the drill bit sleeve. The tail end of the fixing arm is provided with a fixing screw for fixing the sliding arm in the arc-shaped chute, the tail end of the sliding arm is provided with the positioning needle radially extending along the arc-shaped sliding arm, and the positioning needle is provided with a fixing screw for fixing the positioning needle. The arc-shaped fixing arm and the arc-shaped sliding arm are con-cyclic, the skeleton fixing part and the positioning needle are located on the same horizontal plane, and the skeleton fixing part installing the drill bit sleeve and the positioning needle encounter at the center of the circle. The sliding positioning guide device is simple in structure, convenient to operate and capable of accurately and rapidly enabling a drill bit or a guide needle to penetrate an appropriate position, reduces secondary operation injury on local soft tissues, shortens the operation time, reduces bleeding, reduces complications of postoperative patients and shortens the hospital stays.
Owner:田红波 +2

Lead-connecting device

The invention relates to a lead-connecting device in a power system. The device comprises a hydraulic press binding clip and a hydraulic system matched with the same and is characterized in that a guide rail is fixed on a worktable, a trolley which can move along the guide rail and is provided with the hydraulic press binding clip is mounted on the guide rail, the hydraulic press binding clip is fixed on a fixed plate on the trolley, a lifting device and a guiding device for moving the fixed plate up and down are mounted between the fixed plate and the trolley, a fixed frame is mounted on the worktable at one end of the trolley and provided with a lead-clamping device, a lead-clamping trolley which can move along the guide rail is mounted on a guide rail at the other end of the trolley and is provided with a lead-clamping device, and the lifting device, the guiding device and a tension device which pulls the lead-clamping trolley to move along the guide rail are mounted on the lead-clamping trolley. The invention has the advantages of reasonable structure, convenient use and high working efficiency and lead-connecting quality.
Owner:宁夏送变电工程有限公司

Linear motion based antenna gain direction diagram measurement method

The invention provides a linear motion based antenna gain direction diagram measurement method. The measurement method includes: S1, determining far-field test conditions of a to-be-tested antenna; S2, allowing the to-be-tested antenna to be vertical to the central normal direction to plan a linear motion track; S3, placing a reference antenna at the endpoint of the linear motion track and allowing the central normal of the reference antenna to align to the to-be-tested antenna; S4, according to radio frequency power level received by the reference antenna, calculating equivalent power at the intersection point of a circle taking the to-be-tested antenna as the center and the far-field test distance as the radius and a connecting line of the reference antenna and the to-be-tested antenna; S5, controlling the reference antenna to displace continuously on the linear motion track, and calculating the equivalent power after each displacement, wherein the central normal aligns to the to-be-tested antenna after each displacement; S6, calculating transmitting power according to the equivalent power of the S4 and the S5 to obtain a transmitting gain direction diagram. The gain direction diagram can be measured through the linear motion of the reference antenna.
Owner:成都天衡智造科技有限公司

Electric valve

This invention is a motorized valve that is used to adjust refrigerant quantity of refrigerating system. Guiding element and nut are arranged at upper and lower sides of magnet inside of the holding cavity. The said guiding element has guiding hole. The said nut includes internal screw thread section and lower guiding section. The said lead screw includes intermediate external thread section, upper and lower guiding sections that protrude from upper and lower end faces of magnet. The said external and internal thread sections are cooperated. The said upper guiding section is located in the said guiding hole of guiding element. The said lower guiding section is located in the lower guiding section of the said nut. This invention extends the guiding length of lead screw. It can reduce the swing range of lead screw. This invention decreases magnet vibration and increases the abrasion resistant capability of thread section.
Owner:ZHEJIANG SANHUA CLIMATE & APPLIANCE CONTROLS GRP CO LTD

Overhead power transmission line electrification deicing device

The invention relates to an overhead power transmission line electrification deicing device. The overhead power transmission line electrification deicing device includes an insulating deicing bar; the deicing bar is erected at one side of a power transmission line through a carrier frame; the carrier frame is provided with a driving mechanism; the carrier frame comprises two upright rods arranged in parallel; the two upright rods are positioned through at least two parallelly-arranged transverse rods between the two upright rods; the top end of each upright rod is suspended on the power transmission line through a suspending mechanism respectively; the deicing bar is vertically arranged on an end portion of a first transverse rod, wherein the end portion of the first transverse rod extends out from the upright rods; the height of the deicing bar is corresponding to the height of the top end of the upright rods; and the driving mechanism comprises a driving wheel and an insulating transmission rod wound on the driving wheel. The overhead power transmission line electrification deicing device of the invention is simple in structure. With the overhead power transmission line electrification deicing device adopted, deicing operation can be performed under a situation of electrification of a whole line, and the reliability and quality of power supply of a power system can be effectively ensured on the premise that the efficiency of the deicing operation can be improved.
Owner:STATE GRID CORP OF CHINA +1

Method for processing turbine runner shaft

The invention relates to a method for processing a turbine shaft. The key point of the invention is that the dynamic balancing method is applied after the outer circle of a rough turn optical axis and before the outer circle of a semi-refine turn optical axis to correct the center hole, so that the center hole and the outer circles of the optical axes are coincided with the mass center of the turbine. By the processing method, the qualified rate of the turbine shaft is more than 95 percent, and the appearance of a product is beautiful; simultaneously, by the method, the manufacturing accuracy of an R groove on the root part of the turbine shaft is greatly improved, and the processing difficulty is greatly reduced, thereby ensuring the R part to be coincided with the mass center of the turbine shaft and improving the performance of the turbine shaft.
Owner:CHONGQING JIANGJIN SHIPBUILDING IND

Automatic adhering and laminating device for in-mold motor core

The invention discloses an automatic adhering and laminating device for an in-mold motor core. The automatic adhering and laminating device comprises a material strip, a blanking male die and a blanking female die, wherein the blanking male die is arranged at the upper part of the material strip; the blanking female die matched with the blanking male die is arranged at the lower part of the material strip; a locking ring is arranged at the lower part of the blanking female die; a cooling pipe is arranged at the lower part of the locking ring; heating coils are arranged at two sides of the locking ring; and an adhering device is arranged at the left side of each heating coil. The automatic adhering and laminating device has the beneficial effects that synchronous stamping and bonding are achieved through the arranged adhering device, no point for laminated riveting exists on punching plates, a core product is smooth in surface and small in magnetic resistance effect and a layer of quick-drying anaerobic adhesive is arranged between two punching plates to play a certain insulating effect; by adopting the locking ring, the perpendicularity and the planeness of the core and the coincidence degree between the adjacent punching plates are ensured under the action of the gravity and the impact force of the product; and full-automatic digital control of high-temperature baking and fast cooling is achieved through a heating device and a cooling device.
Owner:NINGBO ZHENYU TECH
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