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38results about How to "Large displacement range" patented technology
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Double-raster displacement sensor
InactiveCN101000252AHigh-resolutionGood interference effectUsing optical meansConverting sensor output opticallyElectricityGrating
The invention relates to double-grating displacement transducer. It includes displacement unit, displacement guiding unit, signal processing circuit, laser, double grating unit, and photo-electricity receiver. The double gratings unit is formed by movable and fixed ones. The displacement unit and displacement guiding unit form the rectilinear kinematic pair; laser emits laser beam into double grating unit to produce double grating interference; photo-electricity receiver is used to receive the interference fringe, transmit the electric signal into signal processing circuit. Compared with the single grating displacement transducer, the invention has better interference fringe and fringe voltage signal, suits for using higher subdivision to reach higher resolution. Only if the movable grating has good consistency in moving, it can realize good sized displacement range with 20mm, and 0.01um resolving ability.
Owner:HUAZHONG UNIV OF SCI & TECH
Large-stroke micro-drive precise two-dimensional worktable
InactiveCN103273328AMeasures to overcome leakageAvoiding Impact Processing DilemmasFeeding apparatusLarge fixed membersImage resolutionMachine tool
The invention discloses a large-stroke micro-drive precise two-dimensional worktable which is mainly composed of a base, an X-direction feeding device, a Y-direction feeding device and a feeding device top worktable surface, wherein the X-direction feeding device and the Y-direction feeding device are mutually perpendicular in a two-dimensional plane, the Y-direction feeding device is arranged above the X-direction feeding device, the X-direction feeding device comprises an X-direction large-stroke feeding device and an X-direction micro-feeding device, the Y-direction feeding device comprises a Y-direction large-stroke feeding device and a Y-direction micro-feeding device, and the Y-direction large-stroke feeding device is arranged above the X-direction micro-feeding device and can move along with feeding motion of the X-direction micro-feeding device. A transition connecting plate of the base is connected with a machine tool. Due to the fact that fine precision drive of the worktable is matched with large-stroke displacement output, output force is large, the resolution ratio of displacement is high, the range of the displacement is large, and the large-stroke micro-drive precision two-dimensional worktable has a wide application prospect. Due to cooperation of a cooling system, the large-stroke micro-drive precision two-dimensional worktable avoids the machining difficulty that the feeding precision is influenced by heat generated by long-time precise machining and heating.
Owner:WUHAN UNIV OF SCI & TECH +1
Nanomechanical photonic devices
ActiveUS20110103733A1Improve the problemLarge displacement rangeMaterial analysis by optical meansNanoopticsPhotonicsNanoscopic scale
The present invention relates to devices which operate on gradient optical forces, in particular, nanoscale mechanical devices which are actuable by gradient optical forces. Such a device comprises a waveguide and a dielectric body, with at least a portion of the waveguide separated from the dielectric body at a distance which permits evanescent coupling of an optical mode within the waveguide to the dielectric body. This results in an optical force which acts on the waveguide and which can be exploited in a variety of devices on a nano scale, including all-optical switches, photonic transistors, tuneable couplers, optical attenuators and tuneable phase shifters. The waveguide can also comprise a gap such that two cantilever bridges are formed.
Owner:YALE UNIV
Large-displacement drawing machine for constant-resistance anchor tie and usage method thereof
ActiveCN102944477AEasy alignmentLarge displacement rangeMaterial strength using tensile/compressive forcesHydraulic cylinderHydraulic pump
The invention provides a large-displacement drawing machine for a constant-resistance anchor tie and a usage method thereof. The large-displacement drawing machine comprises a supporting column, a hoop, a rotating seat, a hollow hydraulic cylinder and a hydraulic pump, wherein the supporting column can be supported in a tunnel; the hoop is sleeved on the supporting column; the rotating seat is assembled on the hoop; the hollow hydraulic cylinder can draw the anchor tie; the hydraulic pump drives the hollow hydraulic cylinder; the length of the supporting column can be adjusted; two ends of the supporting column can be leaned against on the bottom surface and the top surface of the tunnel, which are opposite; the hoop can be detachably mounted at different positions on the supporting column; the rotating seat can be fixedly arranged on the hoop at different rotation angles; the hollow hydraulic cylinder is connected with the hydraulic pump; and the hollow hydraulic cylinder is assembled on the rotating seat. The large-displacement drawing machine for the constant-resistance anchor tie has the advantages of large displacement range, high bearing capacity, simple structure, convenience in movement, flexibility in operation, and safety and reliability in transportation.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)
Pedal device for electronic percussion instrument
ActiveUS20160012806A1Easily applyAccurately detectElectrophonic musical instrumentsPercussion musical instrumentsEngineeringMechanical engineering
Owner:ROLAND CORPORATION
Winding machine
InactiveUS20200328662A1Avoid small quantitiesImprove interchangeabilityManufacturing dynamo-electric machinesCoils manufactureWinding machineEngineering
A winding machine (1) for winding coils (4), having at least one coil-body receptacle (2) providing a receiving space (5) for coil bodies to be wound and at least one winding-material feed (3) being configured to feed winding material into the receiving space (5). The at least one coil-body receptacle (2) comprises at least a first and a second receiving unit, wherein, in a first setting, using the first receiving unit, the winding machine (1) allows winding in accordance with a first winding technique and wherein, in a second setting, using the second receiving unit, the winding machine (1) allows winding in accordance with a second winding technique different from the first winding technique. The first and second winding techniques are selected from the group of winding techniques consisting of the coil-winding technique, the conventional needle-winding technique, the linear winding technique and the flyer-winding technique.
Owner:ATS WICKEL UND MONTAGETECHN
Compact vertical-motion isolator
ActiveUS9261155B2Reduce widthEliminate stiffnessNon-rotating vibration suppressionSprings/dampers functional characteristicsNegative stiffnessEngineering
Owner:MINUS K TECH
Segmented MEMS mirror for adaptive optics or maskless lithography
An apparatus having a plurality of arrayed MEMS devices, each device having a parallel-plate actuator and a reflective plate, both of which are mechanically coupled to a flexible beam attached between two anchors. Advantageously, the use of parallel-plate actuators in the apparatus alleviates stringent requirements for the alignment of lithographic masks employed in the fabrication process. In one embodiment, each flexible beam has a relatively small thickness and a relatively large length to effect a relatively large displacement range for the corresponding reflective plate. Movable electrodes of different parallel-plate actuators are configured to act as an electrical shield for the flexible beams, which reduces inter-device crosstalk in the apparatus. Reflective plates of different MEMS devices form a segmented mirror, which is suitable for adaptive-optics and / or maskless lithography applications.
Owner:LUCENT TECH INC
Window shade and control system thereof
InactiveUS9663987B2Large displacement rangeDoor/window protective devicesToothed gearingsDrive shaftControl system
Owner:TEH YOR CO LTD
Mountain cross-country carrying and transporting vehicle
ActiveCN105034735AImprove stabilityEasy to driveInterconnection systemsResilient suspensionsHydraulic cylinderCross country
A mountain cross-country carrying and transporting vehicle comprises a first vehicle body and a second vehicle body which are arranged in the front-rear direction. The mountain cross-country carrying and transporting vehicle is formed by hinging the first vehicle body to the second vehicle body, the bending angle between the two vehicle bodies is controlled through the steering devices such as a steering engine and a hydraulic cylinder, the vehicle is made to swerve, the swerve radius is small, it is facilitated to drive in narrow mountains areas, the rear portion of a vehicle hopper cocks up, so that cargoes loaded inside the vehicle hopper can fall downward along a formed slope and toward the middle of the vehicle, the cargoes can get close to the middle of the vehicle as much as possible, the center of the whole vehicle can get close to the middle of the vehicle as much as possible, the stability when the vehicle drives on mountain roads is improved, when the vehicle climbs, the cargoes in the vehicle hopper do not slide backwards and fall out, and the safety of transportation is guaranteed.
Owner:姜兆田
Interference objective driving device
The invention discloses an interference objective driving device. The interference objective driving device comprises a body, a mounting rack and a fixing rack. A through chamber is formed in the body, and an amplifying mechanism is arranged in the chamber and comprises arc metal frames arranged oppositely and metal plate frames which are integrally formed with the arc metal frames and arranged oppositely. The metal plate frames are arranged between the arc metal frames and are perpendicular to the arc metal frames. A piezoelectric ceramic element, a pre-tensioning jackscrew and a roll ball are also arranged in the chamber. The piezoelectric ceramic element is integrally connected between the metal plate frames, the pre-tensioning jackscrew is in threaded connection with the body, the roll ball is matched with the pre-tensioning jackscrew, and the roll ball abuts against the wall face of one side, integrally connected with the metal plate frames, of the piezoelectric ceramic element. According to the interference objective driving device, the amplifying mechanism is used for amplifying infinitesimal displacement of the piezoelectric ceramic element, and therefore a larger displacement range is obtained for the interference objective driving device.
Owner:SUZHOU UNIV
Hermetic compressor
ActiveCN101313151AImprove spring characteristicsLarge displacement rangePositive displacement pump componentsWorking fluid for enginesEngineeringMechanical engineering
A hermetic compressor has a structure where a spring reed is separated from a discharge reed at its fixed end by a determined clearance and separated from it at an opening / closing section of the discharge reed by a clearance larger than that at the fixed end. This structure allows increase in distance between the discharge reed and a movable section of the spring reed at a position corresponding to the opening / closing section of the discharge reed. Therefore, the displacement range having a small spring constant can be extended at the beginning of opening of the discharge reed, so that the spring characteristic of a discharge valve device can be increased.
Owner:PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE
High damping low force hydraulic strut tensioner
ActiveUS20170059010A1Increase dampingLess damping forceGearingFluid-pressure actuatorsEngineeringMechanical engineering
A tensioner device, includes a housing defining a cylindrical bore. A plunger is disposed in the bore and has a non-cylindrical outer surface. A spring is engaged with the plunger for biasing the plunger in an outward direction and an oil passage is in communication with the cylindrical bore for delivering pressurized oil to the bore. The non-cylindrical outer surface provides hydraulic clearance areas between the plunger and the bore to provide improved damping without high damping force.
Owner:GM GLOBAL TECH OPERATIONS LLC
Dual-purpose wrist developer with adjustable arm of force
InactiveCN108201678AEffective structureStrong impact resistanceResilient force resistorsWristEngineering
The invention discloses a dual-purpose wrist developer with an adjustable arm of the force. Extension rods are symmetrically arranged at two ends of a compression spring, the extension rods are fixedly connected with the compression spring, limiting rings are arranged on the outer rings of the extension rods, electronic pushing rods are arranged at the lower ends of the limiting rings, connectingheads are arranged at the tops of the electronic pushing rods, the top surfaces of the connecting heads are fixedly welded to the extension rods, extended rods are arranged at the bottoms of the connecting heads, the input ends of the extended rods are provided with controllers, and two ends of the extended rods are connected with the connecting heads and the controllers. According to the wrist developer, the displacement range of the extension rods can be effectively limited by the limiting rings, so that the compression spring is effectively protected from malfunction due to excessive deformation, the extending and shortening of the extended rods can be controlled by the controller, so that the effect of adjusting the arm of the force is achieved, when the extending lengths of the extended rods reach the maximum amount, the whole device can be used as an arm power exercising apparatus, the flexibility degree of the whole device is strengthened, and the structural practicability is improved.
Owner:刘路清
Indoor decoration device
ActiveCN111335584ALarge displacement rangeReduce frequency of adjustmentRotary stirring mixersTransportation and packagingHome improvementStructural engineering
The invention relates to the field of home decoration equipment, in particular to an indoor decoration device. The indoor decoration device solves the problems that a painting device is low in automation degree and working efficiency in indoor decoration in the prior art. The indoor decoration device comprises a fixing block for a painting mechanism, wherein the fixing block is arranged on a screwrod type lifting frame; the painting mechanism is arranged on the fixing block; a displacement line is parallel to the horizontal plane; a horizontal motor is arranged at one end of a screw rod; a horizontal sliding block is arranged on the screw rod and is connected with the painting mechanism; a pressure adjusting device is arranged between a painting roller of the painting mechanism and the horizontal sliding block in order to enable the painting mechanism to be attached to a treated wall tightly; and an automatic feeding mechanism is arranged at one side, away from the horizontal motor, of the fixing block. The indoor decoration device has the advantages that the position of the painting roller can be adjusted, and the adjusting frequency in working is reduced; and excessive feeding is avoided, the pressure between the painting roller and the wall is fixed, and the uniform painting is achieved.
Owner:HENAN INST OF SCI & TECH
Compact vertical-motion isolator
ActiveUS20150122970A1Reduce widthEliminate stiffnessPortable framesNon-rotating vibration suppressionEngineeringNegative stiffness
A vertical-motion vibration isolator utilizes negative-stiffness-producing mechanism which includes a plurality of compressed flexures, each having a particular length in the compressed direction of the flexure and being oriented in a horizontal direction, wherein the plurality of compressed flexures are positioned relative to each other such that the length of each compressed flexure substantially overlaps the length of each of the other compressed flexures. At least some of the plurality of compressed flexures can be positioned in a stacked arrangement. The arrangement of compressed flexures forming a portion of the negative-stiffness mechanism can reduce the size of the isolator without compromising vibration isolation performance.
Owner:MINUS K TECH
Pedal device for electronic percussion instrument
ActiveUS9721547B2Large displacement rangeAccurate detectionElectrophonic musical instrumentsPercussion musical instrumentsEngineeringMechanical engineering
Owner:ROLAND CORP
Mobile compressor gas lift
InactiveCN103912244AReduce processing workloadImprove protectionFluid removalProcess engineeringSewage
The invention relates to a mobile compressor gas lift. The mobile compressor gas lift is characterized by comprising a compressor gas lift vehicle loaded with a compressor (1), a wellhead external-delivery pipeline, a four-way control valve, a gas intake pipeline equipped with a pressure stabilizer, a two-phase separator, a sewage tank, a flow meter, an intercepting valve and wellhead equipment. The wellhead external-delivery pipeline is connected with a gas gathering station, natural gas from the gas gathering station enters the mobile compressor gas lift through the wellhead external-delivery pipeline and then enters the gas intake pipeline equipped with the pressure stabilizer via control of the four-way control valve, and the gas intake pipeline equipped with the pressure stabilizer is connected with the compressor (1). The mobile compressor gas lift is high in conformability, large in displacement range, convenient in gas source and free of limits of a well structure; since the gas source needs not to be produced additionally during construction, dissipated energy is saved by one half nearly as compared with that of a nitrogen gas lift.
Owner:BEIJING ENRUIDA TECH
Bidirectional movement vertical type steel-bar automatic bending machine
ActiveCN100579684CEnsure safetyLarge displacement rangeWork holdersLocking mechanismArchitectural engineering
The invention discloses a bi-directional movement vertical reinforcing steel bar automatic bending machine, which comprises a rail, an reinforcing steel bar automatic bending machine which moves on the rail and a reinforcing steel bar compressing device; the reinforcing steel bar compressing device is arranged on one side of the rail; the reinforcing steel bar automatic bending machine consists of a first reinforcing steel bar automatic bending machine and a second reinforcing steel bar automatic bending machine which have the same structure and arranged on corresponding positions; the bottoms of the first reinforcing steel bar automatic bending machine and the second reinforcing steel bar automatic bending machine are provided with bi-directional traction mechanisms which have the same structure and are used for driving the bending machines to move on the rail and locking mechanisms which are used for locking the bending machines on the rail. The invention has the beneficial effects that the vertical bending pattern is easier for operation and the safety of operator can be guaranteed. The minimum bending length is 460mm and the bending angle range is extended. The two bending machines can move right and left fast at the same time for bending reinforcing steel bars to shorten the bending and forming time and promote the productivity. The invention has the advantages that the structure is simple and maintenance is convenient; work is stable and the energy is saved and the cost is low.
Owner:TJK MACHINERY TIANJIN
An interior decoration device
ActiveCN111335584BAchieve regulationLarge displacement rangeRotary stirring mixersTransportation and packagingElectric machineryStructural engineering
The invention relates to the field of home decoration equipment, in particular to an interior decoration device. The invention aims to solve the problems of low automation and low work efficiency of painting equipment in interior decoration in the prior art. The invention comprises a fixed block of a coating mechanism installed on a lead screw type lifting frame, the coating mechanism is installed on the fixed block, the displacement line is parallel to the horizontal plane, a horizontal motor is installed at one end of the lead screw, and a horizontal motor is installed on the lead screw. A horizontal sliding block is provided, and the horizontal sliding block is connected to the coating mechanism. A pressure adjustment device is provided between the coating roller of the coating mechanism and the horizontal sliding block so that the coating mechanism is close to the wall to be treated. An automatic feeding mechanism is installed on the side away from the transverse motor. The advantages are: the adjustment of the position of the coating roller is realized, and the adjustment frequency in the work is reduced; the oversaturation of the feeding material is avoided, the pressure between the coating roller and the wall is fixed, and the uniform coating is realized.
Owner:HENAN INST OF SCI & TECH
Large-stroke micro-drive precision two-dimensional worktable
InactiveCN103273328BMeasures to overcome leakageAvoiding Impact Processing DilemmasFeeding apparatusLarge fixed membersImage resolutionEngineering
Owner:WUHAN UNIV OF SCI & TECH +1
A differential pressure wind speed transmitter
ActiveCN105888984BImprove stabilityLow densityFluid speed measurement using pressure differenceDifferential pressureData acquisition
The invention relates to a differential pressure type wind speed transmitter. Two wind pressure adapting pipes are arranged inside a vacuum pumping pipe in parallel, an electric pressure sensing component is mounted in the vacuum pumping pipe, acrylonitrile butadiene styrene (ABS) plastic plugs capable of sliding vertically up and down are arranged in the wind pressure adapting pipes located inside the vacuum pumping pipe, T-shaped connecting bodies facing the central axis of the vacuum pumping pipe are arranged on side walls of the ABS plastic plugs, and the wind pressure adapting pipes located at the lower part of the ABS plastic plugs are filled with oxygen. The influence of wind pressure on the ABS plastic plugs is fed back to a traditional air pressure difference detection device and is further fed back to the distance between capacitor plates, so that the voltage change between the capacitor plates is influenced; another data acquisition way is provided and has the higher reference value, meanwhile, the sealed vacuum pumping pipe can reduce the influence of the temperature as much as possible, the stability of measurement results is improved, the density of the oxygen used for filling is relatively low, and the displacement range can be larger after the wind pressure is fed back to the ABS plastic plugs.
Owner:SHANGHAI SIKO HEATING & VENTILATION ELECTROMECHANICAL EQUIP TECH
Indoor decoration dust isolation equipment
ActiveCN112296050BAchieve immobilityEasy to moveDispersed particle filtrationTransportation and packagingScreen filterEnvironmental geology
The application relates to a dust isolation device for indoor decoration, and relates to the field of isolation equipment. It includes a chassis, the top of the chassis is provided with an air inlet, and one side of the bottom is provided with an air outlet. The chassis is provided with a suction fan at the air inlet. The top of the cabinet is also rotated with a suction pipe, the bottom of the suction pipe communicates with the air inlet of the cabinet, the four corners of the bottom of the cabinet are provided with wheels, and the cabinet is detachably installed at the air outlet. A filter screen assembly is blocked, and a through hole is opened on the side of the bottom of the chassis away from the air outlet, and a bottom dust suction assembly is provided at the through hole. This application solves the dust generated by interior decoration, and reduces the harm to construction personnel and users.
Owner:湖北亮又亮装饰工程有限公司
Shock-absorbing mechanism of load-carrying vehicle
ActiveCN104986005AImprove off-road performanceLarge rise and fallLeaf springsTransverse axisVehicle frame
A shock-absorbing mechanism of a load-carrying vehicle comprises a frame, the frame is provided with a main transverse shaft, two sides of the frame are provided with main suspension mechanisms, and each main suspension mechanism comprises a swing plate spring, a support plate spring and a connecting structure. The connecting structure is arranged at the front side of the main transverse shaft, the support plate spring is mounted on the main transverse shaft and connected with the connecting structure. The front portion of the frame is connected with the connecting structure through the swing plate spring, and the swing plate spring is hinged to the frame. A main axle is mounted between connecting structures of two main suspension mechanisms. Connecting structures in the shock-absorbing mechanism of the load-carrying vehicle are mounted between two plate springs, so the two plate springs can support the main axle on the connecting structures, the bearing capacity can be raised, the scope of movement of main wheels mounted to the main axle can be enlarged during buffer, and the cross-country performance of a vehicle can be raised. The swing plate springs can swing because the swing plate springs are hinged to the frame, the lifting range of the connecting structures can be further increased, the scope of movement of main wheels is further enlarged, and the cross-country performance of the vehicle can be further raised.
Owner:姜兆田
Heavy-duty vehicle shock absorber
ActiveCN104986005BImprove off-road performanceLarge rise and fallLeaf springsTransverse axisVehicle frame
A shock-absorbing mechanism of a load-carrying vehicle comprises a frame, the frame is provided with a main transverse shaft, two sides of the frame are provided with main suspension mechanisms, and each main suspension mechanism comprises a swing plate spring, a support plate spring and a connecting structure. The connecting structure is arranged at the front side of the main transverse shaft, the support plate spring is mounted on the main transverse shaft and connected with the connecting structure. The front portion of the frame is connected with the connecting structure through the swing plate spring, and the swing plate spring is hinged to the frame. A main axle is mounted between connecting structures of two main suspension mechanisms. Connecting structures in the shock-absorbing mechanism of the load-carrying vehicle are mounted between two plate springs, so the two plate springs can support the main axle on the connecting structures, the bearing capacity can be raised, the scope of movement of main wheels mounted to the main axle can be enlarged during buffer, and the cross-country performance of a vehicle can be raised. The swing plate springs can swing because the swing plate springs are hinged to the frame, the lifting range of the connecting structures can be further increased, the scope of movement of main wheels is further enlarged, and the cross-country performance of the vehicle can be further raised.
Owner:姜兆田
Electric submersible pump for multistage dual-reverse-screw lifting split bearing structure
The invention discloses an electric submersible pump for a multistage dual-reverse-screw lifting split bearing structure, and the electric submersible pump mainly solves the problems that an existingoil-immersed pump is unstable in operation, is low in efficiency and is good in fluid conveying performance under complex working conditions such as high sand content and high gas content. The electric submersible pump is characterized in that the lower part of an upper joint (1) is connected with an upper outer barrel (11), the upper part of a lower joint (8) is connected with a lower outer barrel (12), at least two bearing straightening bodies (5) are arranged between the upper outer barrel (11) and the lower outer barrel (12), a stator (7) is connected between the bearing straightening bodies (5), a rotor (6) is arranged inside the stator (7), and the rotor (6) is connected on a main shaft (2); and a turning direction of a stator spiral blade inside the stator (7) is reverse to that ofa rotor spiral blade outside the rotor (6). The electric submersible pump for the multistage dual-reverse-screw lifting split bearing structure disclosed by the invention is suitable for performing mixing and transporting operation of oil, gas, water, sand and the like under bad well conditions such as high gas content and high sand content, is stable in performance, and is high in efficiency.
Owner:江苏世拓特石油装备有限公司
Hoistway rotating intelligent transverse moving vehicle
PendingCN111962941AImprove motor controlLarge displacement rangeParkingsElectric machineStructural engineering
The invention discloses a hoistway rotating intelligent transverse moving vehicle which comprises a hoistway wall, upright posts and a transverse moving plate. Balls are driven by motors at the positions, close to four corners, of the faces, away from each other, of two mounting plates, so that the two mounting plates can realize the effect of rotary displacement in the hoistway wall through guidegrooves arranged in a mounting frame, a user can effectively drive and control the motors and a servo motor below the transverse moving plate through a wireless transceiving module and a single chipmicrocomputer arranged in a controller, the transverse moving plate effectively carries out transverse moving in the mode that the servo motor drives lead screws, meanwhile, displacement adjustment ofthe transverse moving plate can be achieved when the transverse moving plate carries out bearing through the mounting plates by starting the motors, movement control of the user for the transverse moving plate is flexibly and effectively improved, the displacement range of the transverse moving plate is wider, the angle is more diversified, the displacement effect of the transverse moving plate is greatly improved, and more convenience is effectively brought to the construction building process.
Owner:GUANGDONG SAMPU GARAGE CO LTD
Large-displacement drawing machine for constant-resistance anchor tie and usage method thereof
ActiveCN102944477BEasy alignmentLarge displacement rangeMaterial strength using tensile/compressive forcesHydraulic cylinderHydraulic pump
The invention provides a large-displacement drawing machine for a constant-resistance anchor tie and a usage method thereof. The large-displacement drawing machine comprises a supporting column, a hoop, a rotating seat, a hollow hydraulic cylinder and a hydraulic pump, wherein the supporting column can be supported in a tunnel; the hoop is sleeved on the supporting column; the rotating seat is assembled on the hoop; the hollow hydraulic cylinder can draw the anchor tie; the hydraulic pump drives the hollow hydraulic cylinder; the length of the supporting column can be adjusted; two ends of the supporting column can be leaned against on the bottom surface and the top surface of the tunnel, which are opposite; the hoop can be detachably mounted at different positions on the supporting column; the rotating seat can be fixedly arranged on the hoop at different rotation angles; the hollow hydraulic cylinder is connected with the hydraulic pump; and the hollow hydraulic cylinder is assembled on the rotating seat. The large-displacement drawing machine for the constant-resistance anchor tie has the advantages of large displacement range, high bearing capacity, simple structure, convenience in movement, flexibility in operation, and safety and reliability in transportation.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)
Pavement milling machine and landing leg swinging mechanism thereof
InactiveCN102704385BLarge displacement rangeWon't change directionResilient suspensionsRoads maintainenceEngineeringRoad surface
A road milling machine and a leg swinging mechanism for same. The leg swinging mechanism comprises a dual-rocker mechanism formed of a frame (1), a swing rod (5), a rotatable sleeve rod (2), and a fixed connecting rod (4). The swing rod (5) and the rotatable sleeve rod (2) are rockers. The fixed connecting rod (4) is a connecting rod. A rotatable connection is formed between the fixed connecting rod (4) and the rotatable sleeve rod (2) with a leg (3) of the road milling machine being a hinge axis, and the fixed connecting rod (4) and the leg (3) are fixedly connected, and are parallel to each other before and after the swinging of the dual-rocker mechanism. The structure of the leg swinging mechanism does not change the travel direction of the tires or continuous tracks during the swinging of the leg (3), and with small movement ranges of the two rockers, the leg (3) located at the hinge point has a large displacement range, is compact in structure, and occupies a small space.
Owner:SANY HEAVY IND CO LTD (CN)
A bionic flapping-wing micro-aircraft based on the change of the center of gravity of the two-wing differential and the steering gear to achieve high control torque
ActiveCN112009682BEffective control torqueChange angle of attackPower plant typeOrnithoptersFlapping wingGear wheel
The invention discloses a bionic flapping-wing micro-aircraft and a control moment generation method based on the difference of two wings and the change of the center of gravity of a steering gear to realize the generation of high control moment. The aircraft includes a lift system, a transmission system, a control system and a power system. The transmission system realizes the reciprocating flapping of the wings in a small space through the combination of the distributed gear reduction gear and the crank-connecting rod. The control system respectively drives the flapping wing tension beam to move forward, backward, left, and right through two independent steering gears to effectively adjust the angle of attack of the flapping wing. The tension beam of the flapping wing of the present invention is connected with the spherical hinge device on the base, and is controlled by the roll steering gear and the pitch, which effectively increases the change range of the flapping wing's attack angle and improves the control moment generated by the flapping wing. In addition, when the bionic flapping-wing MAV performs attitude control, the rudder effect is further enhanced by controlling the deflection of the center of gravity of the steering gear, which effectively improves the control torque generated by the flapping wing.
Owner:BEIHANG UNIV
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