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33results about How to "Reduce working length" patented technology
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Stent delivery system with adjustable length balloon
InactiveUS6884257B1Efficient and cost-effective post-expansion dilationLarge profileStentsSurgeryStentCatheter device
A stent delivery system with an adjustable length balloon. The system includes a stent delivery catheter having an expandable member with an inflated length that can be adjusted according to the length of a stent to be expanded. An exterior sheath having an expandable distal tip is disposed about the expandable member such that the sheath can be longitudinally adjusted so as to expose a desired length of the expandable member. The exposed length of the expandable member provides an effective working length required to expand the stent for deployment. Additionally, where subsequent expansions of the deployed stent may be necessary, post dilitation may be achieved by re-positioning the catheter and re-adjusting the sheath to form an effective working length of the expandable member which corresponds to the length of the stent that needs further expansion.
Owner:ABBOTT CARDIOVASCULAR
Method and Apparatus for Vacuum Foaming Refrigerator Cabinets
InactiveUS20080284051A1Simple preparation processMaintain normalTailstocks/centresConfectioneryVacuum chamberRefrigerated temperature
A foaming jig (35) with a refrigerator cabinet (13) is enclosed in a vacuum chamber (25); a metered quantity of a polyurethane mixture is then fed into the hollow walls of the refrigerator cabinet (13), making the foam to growth by generating a vacuum degree in the vacuum chamber (25) and into the foaming jig (35); the foaming of the cabinet walls (13) can be carried out in a comparatively short time, by using fast reactive polyurethane formulations.
Owner:CRIOS
Pre-tensioning method plate-beam track movable type steel transverse beam integer tensioning device and tensioning technology
ActiveCN103255718AImprove construction progressShorten the timeCeramic shaping apparatusBridge erection/assemblyBridge typeMovable type
The invention relates to a pre-tensioning method plate-beam track movable type steel transverse beam integer tensioning device and a tensioning technology. The pre-tensioning method plate-beam rail movable type steel transverse beam integer tensioning device comprises a tensioning end fixing steel transverse beam, an anchoring end fixing steel transverse beam, steel strands, beam restraining table bases arranged between the tensioning end fix fixing steel transverse beam and the anchoring end fixing steel transverse beam, a force transmission column arranged on one side of each beam restraining table base, a track movable type platform arranged on one side of the tensioning end fix fixing steel transverse beam and up-and down adjusting steel plates, wherein the up-and-down steel plates are connected on the tensioning end fixing steel transverse beam, the anchoring end fixing steel transverse beam and a lifting jack moving transverse beam in a buckling mode, and each steel strand is provided with two dual-connecting elements, a single connecting element and three sections of precision rolling twisted steel bars. The pre-tensioning method plate-beam track movable type steel transverse beam integer tensioning device is further provided with a pre-tensioning plate lifting device. The pre-tensioning method plate-beam track movable type steel transverse beam integer tensioning device can conduct construction on multiple beams simultaneously, saves materials, is safe, reliable, capable of being used in multiple times, suitable for construction of all bridge types, simple in operation, continuous in construction and suitable for construction of all beam-plate types, and improves effects. The pre-tensioning plate lifting device is capable of rotating at 360 degrees, storage of movable beams is convenient, occupation of a crane is reduced, and efficiency is improved.
Owner:CCCC THIRD HIGHWAY ENG +1
Torque limiter with adjustable critical value
InactiveCN107420457AEliminate energy consumptionAdjust critical torque valueAutomatic clutchesControl theoryTorque limiter
The invention belongs to the technical field of torque limiters, and particularly relates to a torque limiter with an adjustable critical value. The torque limiter with the adjustable critical value comprises a torque limiting mechanism and adjustment driving mechanisms, wherein the three adjustment driving mechanisms are uniformly mounted in the torque limiting mechanism in the circumferential direction; according to the torque limiter with the adjustable critical value, the torque limiting mechanism has the effect of supporting the adjustment driving mechanisms; the three adjustment driving mechanisms are uniformly mounted in the torque limiting mechanism in the circumferential direction and achieve the effect of rotating an input shaft continuously without driving an output shaft to rotate when a torque value required on the output shaft is greater than the set torque value of the torque limiting mechanism in the torque limiter with the adjustable critical value, so that the purpose of protecting an input end is achieved; and moreover, the critical value of the torque limiter can be adjusted.
Owner:DONGGUAN SONGYAN ZHIDA IND DESIGN CO LTD
Efficient lightweight speed reducer for tower crane
PendingCN110065896AReduce weightReduce joint surfaceGear lubrication/coolingWinding mechanismsReduction driveReducer
The invention discloses an efficient lightweight speed reducer for a tower crane. The speed reducer comprises a whole box body, an input shaft, a transmission assembly and an output shaft, wherein theinput shaft, the transmission assembly and the output shaft are sequentially engaged for transmission, the end, extending out of the box body, of the output shaft is of a spline structure, a first convex stop opening is preset on a cover plate of the output shaft and is matched with a first concave stop opening of a winding cylinder spline sleeve, and a second convex stop opening is preset on anouter circle shaft of the end, extending out of the box body, of the output shaft, and is matched with a second concave stop opening of the winding cylinder spline sleeve; an oil tank is formed in thebox body, the inner wall of the oil tank forms a first oil collection groove and a first oil way, the first oil way passes through the transmission assembly and / or a bearing of the output shaft, oneend of the first oil way communicates with the first oil collection groove, the other end of the first oil way communicates with an oil tank inner cavity, the box body is connected with a high-speed end bearing pedestal, a second oil collection groove and a second oil way are formed on the high-speed end bearing pedestal, the second oil way passes through an inner cavity of the high-speed end bearing pedestal, one end of the second oil way communicates with the second oil collection groove, and the other end of the second oil way communicates with the oil tank inner cavity.
Owner:CHENGDU JIUHE CONSTR EQUIP
Tool assembly
InactiveUS20080279645A1Reduce working lengthSecure couplingThread cutting toolsTransportation and packagingCouplingEngineering
The present invention discloses a tool assembly being capable of reducing considerably an axial length of a working member (tool), in particular, a length of a male spigot to be coupled with a coupling member and transmitting a torque to a working member without generating a loss by means of a secure coupling between a male spigot of a working member (tool) having a short length and a coupling member. A tool assembly according to the present invention comprises a tool including a head to be approached to a work-piece, a male spigot extended from a rear end of the head and a flange formed at a border portion between the head and the male spigot and having a ring shaped flat rear surface; and a coupling member consisting of a first section having a cavity formed on a central portion of a front side thereof for receiving the male spigot and a second section formed at a rear side of the first section and connected to a driving means. The male spigot has a tapered surface formed on a side thereof, a through hole communicated with the cavity is formed on a side of the first section of the coupling member, and an end of a coupling screw coupled with the through holes is capable of pressurizing the tapered surface of the male spigot received in the cavity.
Owner:TAEGUTEC
Anodic oxidation and sealing hole washing-free hole sealing technology
InactiveCN101230478AImprove wear resistanceSealing rate increasedSurface reaction electrolytic coatingProduction lineWear resistance
The invention relates to a washing-free hole-sealing process technique between anode oxidation and hole sealing. The invention brings the potential of the hole-sealing solution in the new technique mode into full play and utilizes the sulphuric acid received from the previous technique process to get involved in the hole-sealing reaction, thereby causing the research, development and application of the new hole-sealing prescription more logical and abolishing the middle washing procedure between the period that after the anodic oxidation of the aluminum workpiece and before the hole-sealing technique. The total duration for the whole hole-sealing process is shortened from 65 to 75 seconds for the prior technique to 30 seconds or so for the new technique, the sealing rate of the oxide film after the hole-sealing treatment is enhanced by 30 percent, and the wearing resistance of the oxide film is boosted by 70 percent and the alkali-proof performance of the oxide film is increased by 50 percent. In addition, the process length of the electrochemical section in the production line is shortened by 40 percent and the process cost is accordingly decreased by 35 to 40 percent. All the improvements facilitate the invention to be a good partner for the hole-sealing technique in the production line of PS printing plates and CTP plates.
Owner:李文志
Low-heat expansion quartz gauge rod as well as demarcating method and application thereof
InactiveCN101701786ALittle effect of temperature changeReduce processing requirementsMechanical measuring arrangementsEngineeringCoordinate-measuring machine
The invention relates to a low-heat expansion quartz gauge rod as well as a demarcating method and application thereof. The low-heat expansion quartz gauge rod is characterized by being in a the structural form of taking a low-heat expansion coefficient quartz rod as a main body; two ends of the quartz rod are sleeved with metal sleeves; the end surfaces of the metal sleeves arranged on the two ends are respectively provided with cone sockets; the cone angles and the depths of the cone sockets arranged on the two end surfaces are same; and centre lines of the cone sockets arranged on the two ends are overlapped. The invention is very little influenced by temperature, only needs a small number of survey stations when in use, effectively reduces the influence of measurement temperature errors, machining precision and data fitting errors on the working lengths of gauge blocks and is especially suitable for demarcating parameters of an articulated type coordinate measuring machine.
Owner:HEFEI UNIV OF TECH
Tool Assembly
InactiveUS7520704B2Reduce working lengthSecure couplingThread cutting toolsTransportation and packagingCouplingFlange
Owner:TAEGUTEC
Planet carrier control based torque limiter with adjustable critical value
ActiveCN107504095AEliminate energy consumptionAdjust critical torque valueAutomatic clutchesValue setControl theory
The invention belongs to the technical field of torque limiters, and particularly relates to a planet carrier control based torque limiter with an adjustable critical value. The torque limiter comprises a torque limiting mechanism and adjusting drive mechanisms. The three adjusting drive mechanisms are circumferentially and evenly mounted in the torque limiting mechanism. The function of the torque limiting mechanism in the torque limiter is to be capable of supporting the adjusting drive mechanisms; and according to the function of the condition that the three adjusting drive mechanisms are circumferentially and evenly mounted in the torque limiting mechanism, when the toque value needed for an output shaft is larger than the torque value set by the torque limiting mechanism in the torque limiter, input continues to rotate, but an output shaft cannot be driven to move, and therefore the aim of protecting the input end is achieved, and meanwhile, the magnitude of the critical torque value of the torque limiter can be adjusted.
Owner:SUSONG ANBAO BUSINESS MACHINE
Automobile, engine, crank connecting rod mechanism and connecting rod assembly thereof
ActiveCN107763061AChange working lengthChange distanceConnecting rod bearingsConnecting rodsThrough transmissionEngineering
The invention relates to an automobile, an engine, a crank connecting rod mechanism and a connecting rod assembly thereof. The connecting rod assembly comprises a connecting rod, an eccentric sleeve with an eccentric hole, and a hydraulic driver with an output shaft, wherein the connecting rod is provided with a connecting rod small head and a connecting rod big head; the connecting rod big head is provided with a connecting rod big head hole; the connecting rod small head is provided with an eccentric sleeve mounting hole capable of accommodating the eccentric sleeve; the hydraulic driver isarranged on the connecting rod; the output shaft is in transmission connection with the eccentric sleeve; under the action of hydraulic pressure, the output shaft can do rotational motion around the central axis of the output shaft and drives the eccentric sleeve through transmission connection to do rotational motion around the central axis of an excircle so as to change the distance between theeccentric hole and the connecting rod big head hole. According to the technical scheme, the connecting rod assembly can realize changeable compression ratio of an engine.
Owner:SAIC MOTOR
Lifting starting and stopping system for rotating gate
ActiveCN102146667ATaking into account the requirements of the ecological water systemSimple and compact structureBarrages/weirsWinding mechanismsReduction driveReducer
The invention discloses a lifting starting and stopping system for rotating a gate, which comprises a drive mechanism for driving a cylindrical gate to forwardly and reversely rotate; the drive mechanism is two lifting starting and stopping machines which are arranged at both shores of a river channel symmetrical to the cylindrical gate; two ends of a winding cylinder of each lifting starting and stopping machine are respectively fixed with a steel wire rope and is reversely wound on the winding cylinder, and the other ends of the two steel wire ropes are respectively connected with the upper part of the cylindrical gate by a plurality of guide slide wheels; a plurality of pulley wheel seats of the guide slide wheels are top / down adjustable structures; and motors of the two lifting starting and stopping machines are in driving connection with the winding cylinder by a speed reducer. The lifting starting and stopping system has the advantages of being simple and compact in structure, and low in manufacture cost, so that the requirement of a urban ecological water system is met, and the aims of flood drainage and flood protection are achieved.
Owner:YELLOW RIVER ENG CONSULTING
Fixable laparoscopic puncture outfit
The invention relates to a fixable laparoscopic puncture outfit. The fixable laparoscopic puncture outfit comprises a sheath tube, and further comprises a fixing structure and a connecting structure connecting the sheath tube with the fixing structure, and the fixing structure can be fixed or move on the sheath tube through the connecting structure in the axial direction of the sheath tube; the fixing structure comprises a fixing tube, an air bag, a liquid / air injecting channel and a liquid / air injecting valve; the fixing tube is arranged outside the sheath tube in a sleeving mode, and the length of the fixing tube is smaller than that of the sheath tube; the air bag is arranged at the front end of the fixing tube; one end of the liquid / air injecting channel is connected with the air bag, the other end of the liquid / air injecting channel protrudes out of the tube wall of the fixing tube, an end port of the liquid / air injecting channel is provided with the liquid / air injecting valve, the liquid / air injecting valve is arranged at the back end of the fixing tube, and a valve port of the liquid / air injecting valve protrudes out of the tube wall of the fixing tube; the air bag and the liquid / air injecting valve are communicated through the liquid / air injecting channel.
Owner:THE FIRST AFFILIATED HOSPITAL OF CHONGQING MEDICAL UNIVERSITY
Pre-tensioning method plate-beam track movable type steel transverse beam integer tensioning device and tensioning technology
ActiveCN103255718BImprove construction progressShorten the timeCeramic shaping apparatusBridge erection/assemblyBridge typeMovable type
Owner:CCCC THIRD HIGHWAY ENG +1
Hydraulic tappet and compression release type engine in-cylinder braking system
PendingCN112377282AGuaranteed performanceTurn on stroke precisionValve arrangementsMachines/enginesEngineeringPressure reduction
The invention discloses a hydraulic tappet and a compression release type engine in-cylinder braking system. The hydraulic tappet comprises a tappet body and a plunger, the outer circumferential faceof the plunger is in sliding sealing fit with the inner circumferential face of the tappet body, the plunger is provided with a pressure relief channel communicating with a hydraulic cavity, and a pressure relief valve element and a pressure relief spring are arranged in the pressure relief channel; and an oil supply oil way of the in-cylinder braking system is connected with a control oil port ofa hydraulic control switch valve, when the oil supply oil way is in communication with an engine oil way, the hydraulic control switch valve closes communication between the hydraulic tappet and an external oil way, and when the oil supply oil way is in communication with a pressure reduction oil way, the hydraulic control switch valve communicates the hydraulic tappet with the external oil way.The in-cylinder braking system is matched with the hydraulic tappet for use, so that an engine can exert the characteristic of in-cylinder braking and has the advantage of eliminating noise and impactcaused by a valve clearance brought by the hydraulic tappet, an extension spring for enabling the plunger to be in a retraction state after engine oil pressure is eliminated is not required to be arranged, and the structure is simple.
Owner:BODING AUTOMOBILE SCI & TECH SHAN DONG CO LTD
Critical-torque-variable friction-free torque limiter based on acceleration control
InactiveCN107559344AReduce working lengthHigh torqueSlip couplingAutomatic clutchesFriction torqueDrive shaft
The invention belongs to the technical field of torque limiters, in particular to a frictionless torque limiter with variable critical torque based on acceleration control, which includes a torque limiting mechanism, a critical adjustment mechanism, and a friction elimination mechanism, wherein the critical adjustment mechanism On the torque limiting mechanism; the friction elimination mechanism is installed on the torque limiting mechanism, and the friction elimination mechanism is close to the side of the torque limiting mechanism; the function of the critical adjustment mechanism of the present invention is to adjust the second spring working length, by adjusting the second The size of the working length of the spring, so as to achieve the purpose of adjusting the critical torque of the torque limiter; the function of the torque limiting mechanism is, on the one hand, it can support the critical adjustment mechanism, on the other hand, it can make the load on the output shaft below a certain torque value , Fang can be driven by the first drive shaft.
Owner:戴锋
Non-multiplying-power straight pull type hoist
ActiveCN102102355AMeet the requirements of two-way rotationAdjustment to resolve tensionBarrages/weirsReduction driveEngineering
The invention discloses a non-multiplying-power straight pull type hoist which comprises a winch-type hoist body arranged on an engine base, the winch-type hoist body comprises a winding drum driven by a motor through a speed reducer, steering pulley devices are symmetrically arranged at the left side and the right side of the engine base, each steering pulley device comprises a fixed pulley and a pulley holder, the pulley holder is movably connected with a civil engineering foundation, two ends of the winding drum are respectively and fixedly connected with a steel wire rope, the two steel wire ropes are wound on the winding drum towards opposite directions, one steel wire rope is wound out while the other steel wire rope is wound in, the steel wire rope which is wound in is occupied in a rope slot reserved when the other steel wire rope is wound out; and the other ends of the two steel wire ropes are respectively wound through the corresponding fixed pulleys and connected with a rotating gate. The non-multiplying-power straight pull type hoist disclosed by the invention has the advantages of compact structure, small occupied space, and simple and clear control method of the rotating gate.
Owner:YELLOW RIVER ENG CONSULTING
Unloading mechanism for automatic membrane covering machine
InactiveCN108820867AAutomated crawlingIncrease productivityConveyor partsLoad cellMechanical engineering
The invention provides an unloading mechanism for an automatic membrane covering machine, belongs to the technical field of machinery and aims at solving the problem of low unloading efficiency in prior art. For the unloading mechanism for the automatic membrane covering machine, the automatic membrane covering machine comprises a workbench; the workbench is provided with a conveyor belt; and theconveyor belt is provided with a feeding end and an unloading end. One side, arranged at the workbench and close to the unloading end, of the unloading mechanism comprises a base and an unloading tank; the base is in an L shape; the unloading tank is internally provided with a plurality of placement plates which are horizontally arranged at an equal interval; the base is rotationally provided witha third screw rod vertically; a lifting block is in threaded connection to the third screw rod and is arranged on the base in a sliding manner; a storage tank is connected with the lifting block; a fourth motor which can enable the lower end of the third screw rod to rotate is connected to the lower end of the third screw rod; and the lower side of the base is fixed with a weighing sensor. The unloading mechanism has the advantage that the unloading efficiency is improved.
Owner:嘉兴涌锦服饰有限公司
Deep port U-shaped bend rigidity rotation core pulling die
The invention provides a deep port U-shaped bend rigidity rotation core pulling die, and belongs to the technical field of dies. The deep port U-shaped bend rigidity rotation core pulling die solves the technical problems that according to an existing U-shaped bend die rotation core pulling mechanism, after pipe fitting forming and demoulding, in-place demoulding cannot be guaranteed, and the inner walls of pipe fittings are possibly damaged. The U-shaped bend rotation core pulling die comprises a fixed die and a movable die. The movable die is internally provided with two straight cores and two bend cores. A die cavity for injection molding is formed by the fixed die, the movable die, the straight cores and the bend cores. The two sides of the die cavity are provided with rotation parts corresponding to the two straight cores. The two rotation parts are in sliding connection into the movable die and can rotate around the axes of the arcs where the bend cores are located. The outer sides of the rotation parts are provided with extension arms fixedly connected with the end portions of the corresponding bend cores. The sides, facing the corresponding rotation parts, of the straight cores are provided with straight grooves, the straight grooves extend to the end faces of the straight cores in the axial direction of the straight cores, and the extension arms are embedded in the straight grooves and close the straight grooves. By means of the U-shaped bend core pulling die, the U-shaped bend demoulding yield can be guaranteed.
Owner:YONGGAO CO LTD
An expansion joint device for bridges
InactiveCN104775360BOvercome the problems that may be caused by scalingLow costBridge structural detailsHydraulic cylinderMechanical engineering
The invention discloses an expansion and contraction joint for a bridge. The expansion and contraction joint comprises a force transfer device, a hydraulic cylinder and a connecting device, wherein the connecting device is positioned on the hydraulic cylinder, the force transfer device is positioned on the connecting device and adopts a force transfer block body (1), the cross section shape of the force transfer block body (1) is a reverse right-angle trapezoidal shape, the force transfer block body (1) is of a hexahedron structure, and comprises a located plane of a right-angle waist, a located plane of an inclined edge, an upper bottom surface, a lower bottom surface, a front surface and a back surface, the located plane of the inclined edge is a work surface, the connecting device adopts a pad block (2), the hydraulic cylinder comprises a hydraulic container (3) and a piston (4), the hydraulic container (3) is a container with an opening at the upper part, the piston (4) is arranged at the opening part of the hydraulic container (3), and the inside of a cavity defined by the hydraulic container (3) and the piston (4) is filled with pressure bearing liquid. The expansion and contraction joint has the advantages that the manufacturing is simple and convenient, the structure is firm and reliable, and the safety is high.
Owner:TONGJI UNIV
Torque limiter based on accelerated speed control and with variable critical torque
InactiveCN107477107AReduce working lengthHigh torqueAutomatic clutchesFriction gearingsRev limiterControl theory
The invention belongs to the technical field of torque limiters, in particular to a torque limiter with variable critical torque based on acceleration control, which includes a torque limiting mechanism and a critical adjusting mechanism, wherein the critical adjusting mechanism is installed on the torque limiting mechanism The effect of the critical adjustment mechanism of the present invention is to adjust the size of the second spring working length, by adjusting the size of the second spring working length, so as to achieve the purpose of regulating the critical torque of the torque limiter; the effect of the torque limiting mechanism is, on the one hand The critical adjustment mechanism can be supported, and on the other hand, the output shaft can be driven by the first drive shaft only when the load on the output shaft is below a certain torque value.
Owner:戴锋
Non-multiplying-power straight pull type hoist
ActiveCN102102355BMeet the requirements of two-way rotationAdjustment to resolve tensionBarrages/weirsReduction driveReducer
Owner:YELLOW RIVER ENG CONSULTING
Energy-saving control system for ventilation and illumination of highway tunnel
PendingCN112963189AReduce working lengthReduce working powerWind energy with electric storageElectric circuit arrangementsAgricultural engineeringVentilation tube
The invention discloses an energy-saving control system for ventilation and illumination of a highway tunnel, and relates to the technical field of highway facilities. The energy-saving control system for ventilation and illumination of the highway tunnel comprises a ventilation assembly, the ventilation assembly comprises a plurality of fan supports, a plurality of fans, a plurality of ventilation pipes, an exhaust pipe and a gas detector, and the multiple fan supports, the multiple fans and the multiple ventilation pipes are divided into two groups with the same number. According to the energy-saving control system for ventilation and illumination of the highway tunnel, wind power is gathered and guided to the adjacent fans through spiral wind guide plates in the ventilation pipes, the adjacent fans can guide the wind to the next fan, the wind power is gathered and guided in sequence, the wind power outside the tunnel can be guided into the middle of the tunnel, the multiple fans cooperate to complete ventilation and illumination, the working length of a single fan is reduced, the working power of each fan is reduced, the loss of the fans can be effectively reduced, and the working energy consumption of the fans is reduced.
Owner:GUIZHOU MODERN LOGISTICS ENG TECH RES
Low-heat expansion quartz gauge rod as well as demarcating method and application thereof
InactiveCN101701786BLittle effect of temperature changeImprove high temperature resistanceMechanical measuring arrangementsCoordinate-measuring machineEngineering
The invention relates to a low-heat expansion quartz gauge rod as well as a demarcating method and application thereof. The low-heat expansion quartz gauge rod is characterized by being in a the structural form of taking a low-heat expansion coefficient quartz rod as a main body; two ends of the quartz rod are sleeved with metal sleeves; the end surfaces of the metal sleeves arranged on the two ends are respectively provided with cone sockets; the cone angles and the depths of the cone sockets arranged on the two end surfaces are same; and centre lines of the cone sockets arranged on the two ends are overlapped. The invention is very little influenced by temperature, only needs a small number of survey stations when in use, effectively reduces the influence of measurement temperature errors, machining precision and data fitting errors on the working lengths of gauge blocks and is especially suitable for demarcating parameters of an articulated type coordinate measuring machine.
Owner:HEFEI UNIV OF TECH
Automobile, engine, crank linkage mechanism and its connecting rod assembly
ActiveCN107763061BChange working lengthChange distanceConnecting rod bearingsConnecting rodsCrankControl theory
The invention relates to an automobile, an engine, a crank connecting rod mechanism and a connecting rod assembly thereof. The connecting rod assembly comprises a connecting rod, an eccentric sleeve with an eccentric hole, and a hydraulic driver with an output shaft, wherein the connecting rod is provided with a connecting rod small head and a connecting rod big head; the connecting rod big head is provided with a connecting rod big head hole; the connecting rod small head is provided with an eccentric sleeve mounting hole capable of accommodating the eccentric sleeve; the hydraulic driver isarranged on the connecting rod; the output shaft is in transmission connection with the eccentric sleeve; under the action of hydraulic pressure, the output shaft can do rotational motion around the central axis of the output shaft and drives the eccentric sleeve through transmission connection to do rotational motion around the central axis of an excircle so as to change the distance between theeccentric hole and the connecting rod big head hole. According to the technical scheme, the connecting rod assembly can realize changeable compression ratio of an engine.
Owner:SAIC MOTOR
Double screw lift
InactiveCN107758476BReduce working lengthReduce the difficulty of productionBuilding liftsEngineeringScrew joint
A screw time ascending type elevator comprises a rail rack, a sliding seat unit arranged on the rail rack in a sliding manner, a transmission screw set, a driving screw set, a driven screw set, a driving unit, a transmission unit and a load sliding seat. The transmission screw set comprises a transmission nut part fixedly arranged on the sliding seat unit and a transmission screw in screwed jointwith the transmission nut part. The driving unit is used for driving the transmission screw to rotate. The driving screw set comprises a driving nut part fixedly arranged on the rail rack and a driving screw in screwed joint with the driving nut part. The driven screw set comprises a driven screw. The transmission screw, the driving screw and the driven screw are all rotationally connected with the sliding seat unit. The transmission unit is used for enabling the driving screw and the driven screw to rotate at the same time. The load sliding seat is arranged on the rail rack and connected withthe driven screw.
Owner:HIWIN TECH
Indoor ventilation equipment capable of controlling ventilation quantity
ActiveCN113803824AAvoid poor ventilationReduce working lengthDucting arrangementsMechanical apparatusVentilation ductStructural engineering
Owner:桃源县漆河镇中学
A trocar sleeve and method of using the inner and outer tubes thereof
ActiveCN109124738BReasonable structural designInhibit sheddingCannulasSurgical needlesHuman bodyAbdominal cavity
The invention relates to a trocar sleeve and a method for using the inner and outer tubes thereof, which are mainly suitable for the operation of the abdominal cavity and thoracic cavity of a human body. The casing assembly of the present invention includes a casing lower cover, a sealed cabin and a casing upper cover, and is characterized in that: a locking seat, a locking clip, and circular inner and outer pipes are also provided, and the inner and outer pipes are movably connected , the lock card seat is fixed with the inner tube, and the lock card is fixed on the lock card seat; the outer tube is provided with an outer tube boss, which can move up and down in the chute of the inner tube, and make the lock card extend or retract Advance; the lock card is an elastic part that expands outwards, and is made of memory alloy wire; the inner and outer tube usage method of the present invention is realized by rotating the outer tube so that the lock card is expanded outwards and fixed on the inner cavity wall of the human body. The structure design of the present invention is more reasonable, the casing will not fall off during use, and the use is safer and more reliable.
Owner:ZHEJIANG TIANSONG MEDICAL INSTR
Lifting starting and stopping system for rotating gate
ActiveCN102146667BTaking into account the requirements of the ecological water systemSimple and compact structureBarrages/weirsWinding mechanismsReduction driveReducer
The invention discloses a lifting starting and stopping system for rotating a gate, which comprises a drive mechanism for driving a cylindrical gate to forwardly and reversely rotate; the drive mechanism is two lifting starting and stopping machines which are arranged at both shores of a river channel symmetrical to the cylindrical gate; two ends of a winding cylinder of each lifting starting andstopping machine are respectively fixed with a steel wire rope and is reversely wound on the winding cylinder, and the other ends of the two steel wire ropes are respectively connected with the upperpart of the cylindrical gate by a plurality of guide slide wheels; a plurality of pulley wheel seats of the guide slide wheels are top / down adjustable structures; and motors of the two lifting starting and stopping machines are in driving connection with the winding cylinder by a speed reducer. The lifting starting and stopping system has the advantages of being simple and compact in structure, and low in manufacture cost, so that the requirement of a urban ecological water system is met, and the aims of flood drainage and flood protection are achieved.
Owner:YELLOW RIVER ENG CONSULTING
Method of inhibiting waveguide laser parasitic oscillation
InactiveCN1219344CIncrease output powerImprove output efficiencyActive medium materialActive medium shape and constructionWaveguide lasersOptoelectronics
Wave-guide laser working medium with certain width is divided into three pieces along longitudinal direction. Then, after roughing side face of the divided pieces, they are assembled. The said wave-guide laser working medium is composed of Nd:YAG wve-guide working medium and bound edge at two surfaces. Nd:YAG wave-guide working medium is YAG crystal with Nd in ion concentration 1.1% being adulterated. Bound edge is YAG crystal without Nd being adulterated. The invention restrains parasitic oscillation effectively and outputs double laser output power.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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