315 results about "Wear Problem" patented technology

The invention discloses an undercarriage retracting and releasing mechanism wear prediction method based on digital twinning, and the method comprises the steps: firstly building an undercarriage three-dimensional model containing geometric dimensions and material characteristics, building a multi-body dynamics simulation model, and simulating the stress and wear process of a pin shaft under the actual working condition; and adopting an Archard wear calculation model considering key parameters to calculate the wear of the pin shaft in the simulation model in real time. On the basis, uncertainty analysis of parameters in Archard is carried out, the parameters are considered to obey normal distribution, and a prediction model under multivariate uncertainty is established by setting reasonable mean values and standard deviations. And finally, based on the digital twin model, by using a particle filtering method, initializing a particle swarm, changing a particle weight by virtue of a state and an observation equation, re-sampling to approach a real state, iteratively updating a curve, calibrating model parameters and a state, improving prediction precision, improving prediction accuracy and reliability, discovering a potential wear problem in advance, and providing a basis for a maintenance plan.

The invention provides an alloy processing machine tool operation monitoring management method based on digital twinning, and the method comprises the steps: firstly constructing a digital twinning model used for monitoring management, and the digital twinning model comprises a physical model and a twinning data model; the physical model comprises a three-way cutting force sensor, a three-way vibration sensor, an acoustic emission sensor, a signal modulator and an alloy machining tool, and the sensors collect three-way cutting force time-domain signals, three-way vibration time-domain signals and acoustic emission signals respectively; the twin data model is used for acquiring real-time monitoring data for monitoring management, and comprises a trained multi-modal spatial-temporal feature fusion network and a tool wear loss prediction module; and the multi-modal spatial-temporal feature fusion network comprehensively obtains residual multi-modal fusion features, and obtains a predicted value of the abrasion loss of the rear tool face of the alloy machining tool through a tool abrasion loss prediction module. According to the method, alloy machining tool feature extraction can be comprehensively carried out, the model recognition stability is high, potential abrasion problems are found in time, and the production efficiency and the alloy quality are improved.

A non-contact motor magnetic braking device provided by the present invention comprises a motor rotating shaft, a motor shell and a magnetic braking device, the magnetic braking device comprises a static magnetic force assembly and a dynamic magnetic force assembly, the static magnetic force assembly is fixedly installed on the motor shell, the dynamic magnetic force assembly is in threaded connection with the motor rotating shaft, and the static magnetic force assembly is fixedly installed on the motor shell. When the rotating shaft is observed towards the output end of the motor rotating shaft, the working rotating direction of the motor rotating shaft is consistent with the thread direction so that the movable magnetic assembly can move in the direction away from the motor, and the static magnetic assembly and the movable magnetic assembly are different in polarity and are oppositely arranged so that mutual attraction can be achieved. And a limiting part for preventing the static magnetic component and the dynamic magnetic component from being in contact with each other is arranged between the static magnetic component and the dynamic magnetic component. After the scheme is adopted, the mutual attraction effect of magnetic force is effectively utilized to achieve the braking effect, non-contact braking of the motor is achieved through the static magnetic force assembly, the dynamic magnetic force assembly and the limiting part, and the abrasion problem caused by friction in a traditional braking mode is reduced.

The utility model provides a stamping die fixing device for processing and producing automobile parts, and relates to the technical field of fixing devices, the stamping die fixing device comprises a plurality of supporting columns, the tops of the plurality of supporting columns are fixedly connected with a dismounting mechanism, the top of the dismounting mechanism is fixedly connected with a stamping mechanism, and the dismounting mechanism comprises a placing plate. Two sliding grooves are symmetrically formed in the outer surface of the placement plate, a placement groove is formed in the position, close to the center, of the top of the placement plate, a plurality of limiting columns are fixedly connected to the positions, close to the four corners, of the bottom of the placement groove, and an operation plate is arranged at the position, close to the center, of the top of the placement plate. According to the utility model, the stamping die can be replaced, the problem of abrasion caused by long-time use of the die is effectively avoided, and the stamping die is ensured to be kept in an optimal working state through timely disassembly and replacement, so that the production quality is ensured, and the production cost is reduced.

The invention discloses an embedded injection mold, and relates to the technical field of mold injection, the embedded injection mold comprises an upper mold set, a lower mold set is mounted below the upper mold set, an embedded auxiliary mechanism is arranged below the lower mold set, and the embedded auxiliary mechanism comprises an upper moving plate and an upper assembly pipeline which are symmetrically distributed below an insert main body; the lower portion of the upper assembling pipeline is communicated with a lower assembling pipeline, a lower moving plate is installed in the lower assembling pipeline, the upper moving plate and the upper assembling pipeline form a closed cavity in the downward moving process, generated negative pressure is transmitted to the insert through the hole discharging piece, and a multi-layer round hole pipe of the hole discharging piece is matched with the outline of the irregular insert according to the height difference. Compared with the prior art, the positioning pin has the advantages that the positioning pin is firstly adsorbed from the edge and then transited to the center, deformation of the insert caused by single-point stress is avoided, meanwhile, direct friction between a positioning part and the insert is reduced through non-contact adsorption, the problem of abrasion of a traditional positioning pin is avoided, frequent maintenance and replacement are not needed, long-term positioning accuracy is guaranteed, and production interruption time is shortened.

The invention belongs to the technical field of oil exploitation equipment, and particularly provides a screw pump rotor structure optimization method and system based on wear trajectory quantization, and the method comprises the steps: obtaining the contact conditions of the motion trajectory of feature points on the surface of a rotor and the inner wall of a stator in different angle intervals according to the motion trajectory of the surface of the rotor; calculating the geometric wear strength of each feature point according to the contact condition; and optimizing the rotor structure according to the geometric wear strength so as to homogenize the wear. From the perspective of structure optimization, the problem of uneven wear can be more effectively solved by quantifying the wear track and optimizing the rotor line type in a segmented manner.

The invention discloses a board card module and a server, and relates to the technical field of board card installation, and the board card module comprises a module frame body, an adapter plate, a mainboard module, a power assisting structure and an elastic part; due to the fact that the power assisting structure rotates to assist the mainboard module to be connected with or separated from the adapter plate, the problem that resistance is too large in the plugging and unplugging process of the mainboard module and the adapter plate can be avoided; the elastic piece is fixed on the boosting structure; when the power-assisted structure is in the first rotating state and / or the second rotating state, the elastic piece abuts against the module frame body and is in the compressed state, the elastic piece effectively serves as a buffer layer between the power-assisted structure and the module frame body, direct damage to the contact face of the power-assisted structure and the module frame body is avoided, the abrasion problem possibly caused by frequent operation is remarkably solved, and the service life of the power-assisted structure is prolonged. Therefore, the technical problem of wear failure caused by frequent plugging and unplugging of the power-assisted structure can be solved, and the technical effects of prolonging the service life of the power-assisted structure and the module frame body and ensuring the stability and long-term reliability of the whole structure are achieved.

The invention belongs to the technical field of oil exploitation equipment, and particularly provides a screw pump rotor surface treatment optimization method and system based on wear trajectory quantization, and the method comprises the steps: obtaining the contact conditions of the motion trajectory of feature points on the rotor surface and the inner wall of a stator in different angle intervals according to the motion trajectory of the rotor surface; calculating the geometric wear strength of each feature point according to the contact condition; and optimizing the surface structure of the rotor according to the geometric wear strength so as to homogenize the wear. From the perspective of surface treatment optimization, the problem of uneven wear can be more effectively solved by quantifying the wear track and optimizing the rotor surface treatment in a segmented manner.

The present invention discloses a cable conveyor, comprising a base, a conveying mechanism, a gap adjustment mechanism and a detection and compensation mechanism. The conveying mechanism comprises two groups of crawler conveying units. A conveying channel for conveying cables is reserved between the crawlers of the two groups of crawler conveying units. The gap adjustment mechanism is used to adjust the width of the conveying channel. The detection and compensation mechanism is used to detect the degree of wear of the extrusion blocks on the conveying mechanism and compensate for the worn extrusion blocks so that the extrusion surface of the worn extrusion blocks is on the same plane as the extrusion surface of the normal extrusion blocks. By setting the detection and compensation mechanism, the present invention can monitor the degree of wear of the extrusion blocks on the conveying mechanism in real time and dynamically compensate for the worn extrusion blocks to ensure that the extrusion surfaces of all the extrusion blocks are always on the same plane. This not only avoids the problem of cable slippage and wear caused by defects in the extrusion blocks, but also significantly improves the safety and stability during cable transportation.

The invention discloses a guide vane wear prediction method and system based on deep learning, and belongs to the technical field of mechanical fault prediction and maintenance, and the method comprises the steps: collecting real-time sensor data of guide vanes, and integrating historical wear data of similar guide vanes; identifying similar features of similar guide vanes, extracting key wear modes through the similar features, and establishing corresponding prediction models for different guide vanes; and based on the extracted features and the prediction model, analyzing the wear condition of the guide vane, and providing a wear prediction result. Through comprehensive monitoring and data analysis, the accuracy of guide vane wear prediction is improved, and the reliability of equipment operation is ensured. Through a real-time alarm system, dynamic management of different wear degrees is realized, maintenance work is effectively guided, fault risks are reduced, the service life of equipment is prolonged, and the operation and maintenance efficiency is improved. According to the invention, the abrasion problem can be prevented in advance, and the normal operation and safety of the water turbine are guaranteed.

The invention provides a wear-resistant antirust Teflon coating and a preparation method thereof, and belongs to the technical field of coatings. The preparation method comprises the following steps: irradiating polytetrafluoroethylene micro powder, performing graft modification on the irradiated polytetrafluoroethylene micro powder and glycidyl methacrylate, reacting the modified polytetrafluoroethylene micro powder with silicon oxide coated modified Zn / Fe deposited porous alumina nanospheres modified by a silane coupling agent and hydrolyzed, adding the reaction product into a Teflon primer, and uniformly stirring and mixing to obtain the wear-resistant antirust Teflon coating. The coating prepared by the invention is compact in coating after being cured into a film, has good lubricating conditions and mechanical action resistance, excellent wear resistance, scratch resistance, medium resistance, high-temperature resistance and the like, can effectively resist high-wear-resistance environments such as sliding friction, impact friction and cavitation friction, can make up for the wear defect caused by friction of two contact surfaces, and also has the advantages of high wear resistance, high wear resistance and the like. And two opposite moving surfaces have good lubricating and antifriction effects, so that the problems of friction and abrasion are solved, and a substrate is protected for a long time.

The invention discloses a high-speed electrically-driven wheel side assembly capable of bearing the fluctuation load of a motor and an electric vehicle, and the high-speed electrically-driven wheel side assembly capable of bearing the fluctuation load of the motor comprises the motor provided with a brake device; and the speed reducer is in transmission connection with the output end of the motor through a spline housing assembly and a flexible supporting structure. The problems of vibration and noise of a transmission system caused by fluctuation load of a high-speed motor and abrasion of a long shaft and an end cover are solved, meanwhile, oil stirring and belt discharge loss of a wet brake under the high-speed working condition can be avoided, and the operation efficiency of a speed reducer is improved.

The utility model relates to the technical field of electronics, in particular to a valve structure, an air suspension system and a vehicle. The valve structure comprises a fixing assembly, a valve element, a first elastic piece and a second elastic piece, the fixing assembly is provided with a cavity and a first opening communicated with the cavity, and the valve element is arranged in the cavity and can move between a first position and a second position so that the first opening can be closed when the valve element is located at the first position and opened when the valve element is located at the second position; the first elastic piece is arranged at one end of the valve element and provides first elastic force towards the first position for the valve element, and the second elastic piece is arranged at the other end of the valve element and provides second elastic force towards the second position for the valve element. According to the technical scheme, the first elastic piece and the second elastic piece are arranged to assist valve opening and valve closing, the valve opening and closing response speed of the valve structure can be increased, the impact force of the valve element can be buffered, the problem of loss of the valve element, the fixing assembly and other components can be solved, and the service life of the elastic pieces is prolonged.

The utility model relates to test fixture technical field, especially a solid state disk test fixture, including the bottom plate of horizontal setting, the top surface fixedly connected with frame of bottom plate, the top of frame is connected with the U type frame of sliding, the left and right sides of U type frame all are connected with two symmetrical settings locking bolt of rotation. The utility model's advantage lies in: this solid state disk test fixture drives the rotation of driving rod through motor, drives the cam to push the upward movement of lifting plate, makes the jackscrew steady and lifts the hard disk body. Spring provides the buffer force in the process of jacking, ensures that the separation process of hard disk body and test socket is even. This automatic ejection mechanism completely avoids the wear and tear problem of golden finger caused by uneven force when pulling out manually, and the accurate guidance of the jackscrew through the through hole makes the hard disk body keep vertical rising, protects the contact surface integrity of golden finger and test socket, and significantly improves the reliability and durability of test and plug.

The application discloses a kind of series-parallel hybrid vehicle engine bush wear-preventing control method and system, method includes the following steps: obtaining the maximum vibration frequency corresponding to each vibration amplitude of hybrid vehicle engine cylinder body;Obtain the vibration frequency corresponding to the unacceptable wear thickness value of the oil film between crankshaft and bush when engine assembly is in different acceleration conditions;Periodically obtain the vibration amplitude of engine cylinder body under normal driving conditions of hybrid vehicle;Obtain the damage value of engine bush;According to the damage value of the obtained engine bush, control is executed different wear control strategy.The series-parallel hybrid vehicle engine bush wear-preventing control method provided in the application effectively avoids the occurrence of the problem of bush wear caused by excessive consumption of the oil film between the crankshaft and the bush.

The double-plate vibration training equipment comprises a first base and a supporting frame, and the supporting frame is fixedly connected with the end of the first base; the second base is arranged in the first base; the first elastic piece is fixedly connected with the interior of the second base; a vibration piece is fixedly connected with the upper end of the first elastic piece, and when the first elastic piece stretches, pulling force is applied to the vibration piece; when the first elastic piece is compressed, rebound force is applied to the vibration piece. The permanent magnet part is fixedly connected with the bottom of the vibration part, an electromagnetic part is fixedly connected in the bottom of the second base, the electromagnetic part and the permanent magnet part are oppositely arranged, and the electromagnetic part generates an alternating magnetic field, applies magnetic field force to the permanent magnet part and drives the vibration part to move up and down, so that leg muscles of a user can be effectively exercised; and moreover, the vibration frequency of the vibration piece can be flexibly adjusted, the structure is simple, and the problem of abrasion caused by matching of mechanical parts in the prior art is solved.

The utility model discloses a winch device which is used for hoisting a water taking robot and comprises a hoisting frame, a pulley, a winch, a cross rod and two groups of hoisting rope components, the pulley is arranged on the hanging bracket and can rotate relative to the hanging bracket; a twisted rope of the winch bypasses the pulley, and the tail end of the twisted rope is connected with the cross rod; the two sets of lifting rope assemblies are symmetrically arranged on the two opposite sides of the cross rod and used for being detachably connected to the two opposite sides of the water taking robot. The two lifting rope assemblies located on the two sides of the transverse rod can avoid a shell of the water taking robot when drooping, and the problem of abrasion caused by direct contact between branch ropes and the edge of the robot in an existing lifting mode is solved.

The utility model discloses a kind of liquid chlorine filling anti-leakage intelligent connecting devices, including liquid chlorine storage tank, the top of the liquid chlorine storage tank is equipped with connecting pipe, fixed ring is sleeved on the connecting pipe, the connecting pipe is equipped with cover plate, locking mechanism is installed on the side of the cover plate, filling mechanism is installed on the cover plate, first locking sleeve is sleeved on the filling mechanism, second locking sleeve is installed in the first locking sleeve, the second locking sleeve is fixed with feed pipe. The utility model is through the buckle type design of locking mechanism and fixed ring, realize the even locking and quick disassembly of cover plate and connecting pipe, effectively avoid the uneven stress and wear problem of traditional sealing structure;Filling mechanism is matched with double locking sleeve and shut-off valve, forms multilayer sealing system, in combination with the sealing seat and sealing ring of rubber material, significantly improve the anti-leakage performance under high pressure.

This utility model discloses a locking device for a substation, including a base, a housing mounted on top of the base, and a door hinged to the front surface of the housing; a locking assembly, including an insert plate mounted on the front surface of the door, a threaded groove on the front surface of the insert plate, a stabilizing seat mounted on the top of the base and located on one side of the housing, a slot on the front surface of the stabilizing seat for the threaded groove to be inserted, a threaded hole on the rear surface of the stabilizing seat and communicating with the slot, and a threaded rod threadedly connected to the threaded hole, one end of which can be threadedly connected to the threaded groove; and a knob mounted on the other end of the threaded rod. The beneficial effects of this utility model are: through the designed locking assembly, the open door can be stabilized. Compared with the existing technology of positioning rod and positioning hole cooperation, it effectively avoids the friction and wear problem caused by frequent insertion and removal, improves the locking stability of the door, and ensures the safety of substation equipment maintenance and other operations.

The present invention relates to a trigger detection mechanism and a wheel assembly including the mechanism. The trigger detection mechanism includes a wheel fixing base, a first snap ring, a bracket, and a sensor. The first snap ring is movably disposed within the wheel fixing base. The bracket is rotatably connected to the wheel fixing base. The sensor is disposed at one end of the bracket away from the wheel fixing base. A magnetic member is disposed at the end of the bracket away from the wheel fixing base. When the first snap ring contacts the bracket and causes the bracket to rotate relative to the wheel fixing base to a first position, the sensor is triggered to achieve detection. By providing the first snap ring and the bracket, and rotatably disposing the bracket on the wheel fixing base, the first snap ring and the bracket are in a separated state when the detection is not triggered, so that when the wheel body rotates, it will not affect the bracket, thereby avoiding friction of the bracket during the rotation or movement of the wheel body, avoiding the problem of wear of structural members caused by friction, and effectively improving the service life of the wheel body.

The application discloses a one-way valve for a compressor assembly, and a compressor and a liquid accumulator, the compressor assembly comprising a compressor and a liquid accumulator, at least one of the compressor and the liquid accumulator being provided with the one-way valve, the one-way valve being adapted to allow one-way exhaust of the compressor and one-way suction of the liquid accumulator, the one-way valve comprising a valve housing assembly and a valve core assembly, the valve housing assembly comprising a valve seat and an inner housing, the valve core assembly comprising a valve core unit and an elastic element, wherein a part of the valve core and the inner housing in sliding fit is a valve core fit part, a part of the inner housing and the valve core in sliding fit is an inner housing fit part, at least one of the valve core fit part and the inner housing fit part is subjected to a hardening treatment to form a surface hardening layer on at least a corresponding fit surface. According to the one-way valve, the wear problem can be effectively improved, and the adverse effect of wear on the service life and performance of the one-way valve is improved.

The invention discloses a high-wear-resistance relay pushing structure and a preparation method thereof, the structure comprises a pushing rod, a middle layer and an outer layer, and the pushing rod is connected with the outer layer through the middle layer. A blind hole is formed in the outer layer, one end of the push rod extends into the outer layer through the blind hole, and a middle layer is arranged on the inner wall of the blind hole. On the basis of not changing the size of the original pushing structure of the relay, the ceramic outer layer is additionally arranged on the surface of the glass insulator, so that the wear resistance is improved, the problem of wear between the pushing assembly and the reed in the working state is solved, the reliability of the relay pushing rod combination in the using process is improved, and the failure risk is avoided. And through the use of the sintering mold, a plurality of pushing structures can be prepared at a time, and the production efficiency can be improved.

The utility model discloses a uniform material distributing and distributing chute, belongs to the field of material distributing and transferring equipment, and particularly relates to a uniform material distributing and distributing chute. The material distributing device comprises an upper material distributing bin and a lower material distributing bin, the material distributing bin is composed of a feeding flange, a material distributing plate, a material accumulating plate, a door sill lining plate, an access door and a shell, and the material distributing bin is composed of a middle partition plate, a turning plate material distributing device, a lining plate, a shell and a discharging port. Two cross beams with long holes are arranged on the outer side of the upper portion of the shell, the material distributing plate is hoisted and fixed to the middle of the interior of the shell through high-strength bolts, the position of the material distributing plate can be adjusted within the range of the long holes of the cross beams, and materials can be divided into consistent throughput from the left side to the right side of the vertical face by adjusting the position of the material distributing plate. Through position adjustment of the material distribution plate, dynamic material distribution of the turning plate and a wear-resistant structure, the problems that the screening efficiency is low and the chute is easy to wear due to uneven left-right distribution of materials and particle layering are solved, and the device has the advantages of being high in wear resistance, large in flux and long in service life.

The invention discloses an inclined screw pump for conveying a viscous corrosive medium, and belongs to the field of conveying pumps. Comprising a pump body, a hopper, a feeding assembly, a pre-leading-in pipeline, a rotor and a stator, the feeding assembly is composed of an arch breaking unit, a propelling unit and a pre-pressing leading-in unit, the arch breaking unit breaks a hopper material arch, the propelling unit achieves stable feeding through a main spiral and a reverse auxiliary spiral, the pre-pressing leading-in unit guides materials into a pump body suction inlet, the rotor is a single-head spiral, and the stator is a stator. A screw pitch transition section is arranged between the inlet section and the outlet section, the outer surface is wear-resistant and corrosion-resistant, and the stator is of an eccentric spiral cavity structure and comprises a first stator metal framework ceramic lining and a second stator fluoropolymer lining. Through structural optimization of the feeding assembly, the rotor and the stator, low-shear, high-abrasion-resistance, high-corrosion-resistance and controllable-flow conveying is achieved, the problems that high-viscosity corrosive media are difficult to feed, shear damage is caused and a pump body is abraded are effectively solved, and the high-shear-resistance and high-corrosion-resistance pump is suitable for the precise coating and glue injection process of a new energy lithium ion battery production line.

The utility model provides a polish rod breakage sealing device special for a polish rod sealer. The polish rod breaking and falling sealing device special for the polish rod sealer comprises a lower fixing pressing cap and an upper sealing pressing cap, the lower fixing pressing cap and the upper sealing pressing cap are symmetrically arranged up and down, and a main body is installed on the lower fixing pressing cap and the upper sealing pressing cap in a sealed mode through screw threads; a fixed blocking cap and a spring pressing cap are hermetically mounted on the outer walls of the two sides of the main body through screw threads respectively; the same polish rod is installed on the lower fixing pressing cap and the upper sealing pressing cap in a sealed and sliding mode, and the polish rod is matched with the lower fixing pressing cap and the upper sealing pressing cap. According to the polish rod breaking and falling sealing device special for the polish rod sealer, the problem of abrasion of the polish rod and the sealing flashboard caused by vertical reciprocating motion of the polish rod in the long-time production process can be avoided through contact of the rolling shaft and the polish rod, and meanwhile oil-water mixed objects carried by the polish rod can be prevented from entering the cavities in the two sides; therefore, the cavities on the two sides are kept clean and tidy.

The present invention relates to a hydraulic buffer for a coal gangue separation device, belonging to the field of coal gangue screening equipment. The technical solution adopted by the present invention is as follows: It includes a buffer rod body, one end of the buffer rod body is provided with a piston, and the other end is provided with a guide plunger. A first buffer spring is sleeved on the buffer rod body; the inside of the guide cylinder is a hollow guide stroke hole, one end of the guide cylinder is open and provided with a guide end cover. The guide plunger of the buffer rod body is located in the guide stroke hole of the guide cylinder, and the buffer rod body passes through the end cover hole on the guide end cover. The first buffer spring is located between the guide plunger and the guide end cover, and the other end of the guide cylinder is provided with a guide hinge hole; the hydraulic buffer cylinder is provided with a buffer oil cavity, and the piston of the buffer rod body is located in the buffer oil cavity. The advantages of the present invention are as follows: It solves the wear problem at the mechanical collision limit position during coal gangue screening; adopts double buffering of hydraulic pressure and spring, reduces the force condition of the collision screening equipment at the limit position, and improves the service life of the product.

This invention provides a pump assembly, a compressor, and an air conditioner. The pump assembly includes a crankshaft, rollers, and a cylinder. The rollers are fitted onto the outer circumferential wall of the crankshaft and are connected by threads. The rollers can reciprocate linearly along the axial direction of the crankshaft under the action of crankshaft rotation. The rollers are located inside the cylinder and divide the internal space of the cylinder into independent first and second cavities. The first and second cavities are arranged along the axial direction of the crankshaft. According to this invention, the counterweight is eliminated, eliminating the need for a counterweight to balance the force. The crankshaft has no eccentric circle, resulting in more balanced force on the compressor, reducing compressor vibration, and avoiding the vibration and component wear problems caused by eccentric rotation in the prior art. At the same time, the sliding vane structure in the prior art is eliminated, reducing moving parts, thereby reducing friction loss and refrigerant leakage, and improving the energy efficiency and reliability of the compressor.

The utility model discloses a product displacement structure which comprises a detection table, first sliding rails are fixedly installed at the front and rear positions of the top of the detection table, the front and rear ends of the bottom of each first sliding rail are in sliding connection with first supporting seats through first sliding blocks, and first installation seats are fixedly installed at the tops of the two first supporting seats. A first servo motor is fixedly installed on the left side of one first supporting seat, transverse plates are fixedly installed at the two ends of the left end of the top of the detection table, second sliding rails are fixedly installed on the transverse plates, and second supporting seats are slidably connected to the left end and the right end of the top of each second sliding rail through second sliding blocks. And a mounting seat II is fixedly mounted at the top of the supporting seat II. The servo motor and the precise threaded rod serve as a power source and a transmission part, synchronous movement is achieved through belt transmission, the problems of transmission gaps and abrasion are effectively solved, and high-precision positioning of product displacement is guaranteed. Therefore, the accuracy and the reliability of the detection result can be improved.

The utility model relates to the technical field of surface grinding machines, in particular to a surface grinding machine for die steel finishing, which comprises a machine body, a workbench movably arranged at the upper end of the machine body, a vertical stand column fixedly mounted in the middle of the back of the machine body, a mounting seat movably arranged on the front of the stand column, and a grinding wheel mounted on the front of the mounting seat through a grinding motor. A baffle is arranged on the front face of the mounting base and located outside the polishing wheel. Scraping and sweeping mechanisms are arranged below the two sides of the baffle correspondingly. A filter box is fixedly installed outside the bottom end of the right side of the bed body, and a spraying mechanism is arranged between the filter box and the baffle. According to the utility model, the scraping plate is elastically matched with the spring for use, so that the surface of the polishing wheel and a workpiece polishing area are automatically and adaptively pressed by the scraping plate, the problems of vibration, noise and excessive abrasion generated by a traditional rigid scraping plate in a height difference transition area are effectively solved, the scraping stability is obviously improved, and the service life of the scraping plate is obviously prolonged.

The invention relates to the technical field of optical fiber rotary connectors, in particular to a micro multi-core optical fiber rotary connector rotary mechanism and an optical fiber rotary connector, and solves the problem of abnormal gear wear caused by axial movement of a transmission gear in the prior art. The rotating mechanism comprises a rotating body and a rotating body, the rotating body and the rotating body are in transmission connection through a transmission part, the transmission part comprises an annular positioning seat, two bearing seats are arranged on the inner side of the positioning seat, a compression spring is arranged between the two bearing seats, and transmission gears meshed with the rotating body and the rotating body are rotationally connected to the bearing seats. The positioning seat is in threaded connection with a positioning pin, and the end of the positioning pin extends into the inner side of the positioning seat to be matched with the bearing seat in an inserted mode. The transmission gear has the advantages that the inserting portion of the positioning pin is matched with the radial positioning hole of the bearing seat in an inserting mode, reliable locking of the axial position of the bearing seat is achieved, the defect that the transmission gear is prone to axial movement is fundamentally overcome, and the problem of abnormal abrasion caused by rigid abutting of the end face of the gear is avoided.