31results about How to "Avoid accidental displacement" patented technology

The utility model provides a ruminant living body muscle adipose tissue minimally invasive sampling device, which relates to the technical field of animal tissue sampling, and comprises an outer sleeve and an inner cutting rod, one end of the outer sleeve is provided with a needle, the other end of the outer sleeve is provided with a handle, and the outer sleeve is provided with a sampling groove close to the needle; the inner cutting rod is movably arranged in the outer sleeve, and a sampling knife is correspondingly arranged at the sampling groove. The animal sampling device has the advantages of being high in sampling efficiency, capable of reducing animal injuries, convenient, easy and fast to operate and low in cost.

This application provides a battery pack mounting architecture, a vehicle body underbody structure assembly, and a vehicle, belonging to the technical field of vehicle body underbody structure. By offsetting the power battery pack, a larger exhaust pipe mounting space is planned under the mounting frame. This allows for the installation and layout of the exhaust pipe without reducing the size of the power battery pack, without affecting the capacity of the power battery pack, thus avoiding any adverse impact on the vehicle's driving range. Because the first and second exhaust pipe mounting positions are alternately arranged in the front-rear direction, they can effectively resist horizontal forces from different directions, restricting the movement of the exhaust pipe to a very small range, thereby improving the rigidity and stability of the exhaust pipe installation. Due to the formation of a grid-like frame structure, when a collision occurs, the impact force is decomposed into multiple directions, effectively reducing the force borne at a single point, and also generating extremely high torsional rigidity, leaving sufficient survival space for passengers and preventing the doors from jamming.

This utility model discloses an automatic centering ball-distributing oscillator structure, belonging to the field of bearing assembly. The automatic centering ball-distributing oscillator structure includes an upper connecting seat, with a lower connecting seat at the bottom of the upper connecting seat. The upper and lower connecting seats are interconnected by a centering structure. This utility model solves the problems of traditional oscillating ball-distributing mechanisms, where a single soft rubber body directly connects to the ball distributor for rotational oscillation, or directly connects to an object for rotational oscillation. These mechanisms are prone to breakage of the connecting rubber body, resulting in a short service life, frequent replacement of parts, low production efficiency, and increased operating costs. More critically, when using a single soft rubber body structure, the concentricity of the oscillating component is poor, preventing automatic centering. When used in bearing production equipment, the poor concentricity of the oscillating component frequently causes it to bump against the bearing edge. This utility model patent solves all these problems, resulting in significant economic benefits.

The utility model discloses a modular hydraulically-driven strip tillage machine which comprises a machine frame connected with a tractor in a hanging mode and a plurality of tillage units arranged on the machine frame, and each tillage unit comprises an adjusting frame, a first hydraulic motor arranged on the adjusting frame and a rotary tillage knife roll directly driven by the first hydraulic motor. Each cultivation unit is in sliding connection with the rack through a sliding adjusting mechanism; the strip tilling machine is further provided with a hydraulic driving system, and the hydraulic driving system comprises a multi-way hydraulic valve set for supplying oil to all the first hydraulic motors and a row spacing adjusting oil cylinder for driving all the tilling units to synchronously move in the opposite direction or the reverse direction along the rack so as to adjust the row spacing. A first transverse rod and a second transverse rod are fixedly connected to the rack in a penetrating mode. The row spacing adjusting mechanism has the advantages of dynamic and accurate row spacing adjustment, reliable locking, simplified structure and efficient operation.

The utility model provides a mortar mixer connecting device relates to mixer technical field, including mixer, one side of mixer is installed with connecting shaft, the right end of connecting shaft is installed with bearing base, the right side of bearing base is installed with connecting assembly, connecting assembly includes the connecting flange of installation in bearing base right side, the right side of connecting flan is installed with the inlay groove, the upper end of inlay groove is installed with locking assembly, through setting up connecting assembly, adopts the design of split type, is convenient to dismouting and maintenance, through inlay gear and inlay groove close adhesion, can stably transmit power, ensure that mixer high -efficient operation, and through screw rod and moving block etc.

The utility model belongs to the technical field of logistics turnover boxes, and discloses a logistics turnover box with a reinforcing structure, which comprises a box body, a lower corner covered edge and an upper corner covered edge, the side wall of the box body is connected with a first sliding block and a second sliding block, the upper corner covered edge is in sliding connection with the first sliding block, the lower corner covered edge is in sliding connection with the second sliding block, and the lower corner covered edge is in sliding connection with the second sliding block. The lower corner wrapping edge is connected with a bottom plate and a sleeve, the sleeve is provided with a containing groove, the cross section of the containing groove is in an L shape, a plurality of second limiting holes are formed in the side wall of the containing groove, the upper corner wrapping edge is connected with a sliding pipe, the sliding pipe is connected with the inner wall of the containing groove in a sliding mode, the sliding pipe is provided with an installation groove, and the installation groove is provided with a first limiting hole and a second limiting hole. A first limiting hole is formed in the side wall of the mounting groove, a positioning elastic piece is connected to the inner wall of the mounting groove, and a positioning protrusion is connected to the positioning elastic piece. According to the scheme, adjustment of the reinforcing wrapping edge in the height direction is achieved, the logistics turnover box fixing device can adapt to logistics turnover boxes of different heights, and the application range is widened.

The invention relates to a miniature circuit breaker with multiple wiring modes, which relates to the technical field of intelligent power grids and comprises a shell, an electrical element arranged in the shell and a control handle rotationally arranged on the front side of the shell. A first wiring port is formed in the front portion of the top face of the shell, a second wiring port is formed in the back side of the shell, and a receding notch communicated with the second wiring port is formed in the rear portion of the top face. A conducting strip of which one end is connected with the electrical element is fixedly arranged in the shell, and a binding post positioned in the first wiring port and an elastic clamping piece positioned in the second wiring port are fixedly arranged at the other end of the conducting strip at the same time; a connecting plate is rotationally connected to the side wall of the receding notch, and a protection plate is vertically and fixedly arranged on the side face edge, away from the shell, of the connecting plate; a locking piece is arranged outside the shell; in the application, the connection plate can be flexibly switched to two protection states to correspondingly block the idle first wiring port or the idle second wiring port, so that dust is prevented from entering the shell and being attached to core electrical components such as the conducting strip and the binding post.

The utility model discloses a kind of metal ceramic packaging appearance semiconductor discrete device manual limiting tool, comprising: fixed frame;Two groups of pressing jaw, two groups The pressing jaw is respectively arranged on the two sides of the fixed;Article placing assembly, the article placing assembly is arranged on the fixed frame, the article placing assembly can ascend or descend along vertical direction, and the article placing assembly can be placed with the jig of workpiece;Driving assembly, the driving assembly is arranged in the fixed frame with damping rotation, and is engaged with the article placing assembly transmission, to be suitable for driving the article placing assembly ascending or descending, so that the jig on the article placing assembly is in abutment with two groups The pressing jaw is away from two The pressing jaw;When the driving assembly rotates towards clockwise direction, the article placing assembly ascends along vertical direction, so that jig is in abutment with two groups The pressing jaw, when the driving assembly rotates towards counterclockwise, the article placing assembly descends along vertical direction, so that jig is away from two groups The pressing jaw.

This utility model discloses a lawnmower with a telescopic structure, including a lawnmower and a first handle connected to the lawnmower; the first handle is provided with a second handle that can be telescopically extended; the second handle is provided with a sliding sleeve that is slidably connected to the first handle, and the sliding sleeve is provided with a locking pin; the first handle is provided with a locking hole group that cooperates with the locking pin in the axial direction, and the locking hole group is arranged in several groups around the circumference of the first handle; this utility model can drive the locking pin to disengage from the locking hole group by rotating the second grip, realizing quick unlocking with one hand, significantly simplifying the adjustment steps of the handle length and angle, and greatly improving the operating efficiency.

The utility model provides an atomizer with a tar locking function and an electronic cigarette, and the atomizer comprises a housing which is provided with a tar storage cavity which is used for storing tobacco tar; the atomization assembly is arranged on the shell, the atomization assembly is provided with an atomization channel, and the atomization assembly is used for heating and atomizing tobacco tar entering the atomization channel; the blocking component is arranged on the shell in a sliding mode, the blocking component is provided with an oil passing channel and a limiting hole, the limiting hole extends in the sliding direction perpendicular to the blocking component, and the blocking component has an initial position and a working position; at the initial position, the oil storage cavity and the atomization channel are isolated by the blocking component; the working position is that the oil passing channel communicates with the oil storage cavity and the atomization channel; and the limiting component is detachably arranged in the limiting hole in a penetrating manner, so that the blocking component is limited to the initial position. According to the oil leakage prevention structure, accidental unlocking can be avoided, the locking reliability is remarkably improved, the blocking component can stably maintain the initial position, and the oil leakage prevention performance before use is effectively enhanced.

The utility model relates to the technical field of conveying devices, and discloses continuous conveying equipment for milk powder cans, which comprises a rack, belt wheels are rotatably connected to two ends of the rack, the belt wheels at two ends of the rack are connected through a conveying belt, and transmission components are fixedly connected to rotating shafts of the belt wheels at two ends of the rack. A driving assembly is arranged on the side portion of the machine frame, one end of the driving assembly is connected with the transmission assembly in a meshed mode, a tensioning assembly is fixedly connected to the side wall of the machine frame, and one end of the tensioning assembly elastically abuts against the transmission assembly. The hydraulic piston group is driven by the electric push rod to control the diameter of the reducing wheel, the conveying step pitch can be quickly adjusted, the production requirements of various tank types are met, the continuous operation capability is improved, the tension degree of the synchronous belt is automatically maintained through the spring-pressurized tensioning wheel mechanism, slipping is effectively prevented, rigid locking is formed after a hydraulic loop is adjusted, and the service life of the hydraulic loop is prolonged. And the accuracy and the stability of the conveying step pitch are guaranteed.

The utility model discloses a kind of single motor drive double mechanism's magnetic attraction type structure, it is related to mechanical drive technical field, including driving motor, continuous mechanism and intermittent mechanism;The driving motor is directly connected with the continuous mechanism;The intermittent mechanism rotation is arranged on the continuous mechanism, and the continuous mechanism indirectly drives the intermittent mechanism by magnetic attraction;Intermittent mechanism both ends are respectively correspondingly provided with deflection limit seat one and deflection limit seat two;The deflection limit seat one, deflection limit seat two and driving motor are all fixedly connected on the shell of the household appliance using a single motor drive double mechanism's magnetic attraction type structure;Single motor can realize the differentiating motion control to the continuous mechanism and intermittent mechanism on two different planes by magnetic attraction type structure.

This utility model relates to the field of detector technology, specifically to a glass fiber filament breakage detector, comprising: a base; a steering mechanism including a universal joint, a locking part, and a steering part, wherein the universal joint is fixedly connected to the base, the steering part is rotatably connected to the universal joint, and the locking part is located on one side of the steering part and rotatably connected to the steering part; a support mechanism fixedly connected to the universal joint; and a pneumatic detection mechanism locked to the support mechanism. This utility model solves the problem of detection accuracy attenuation caused by the collection process, ensuring the continuous accuracy of filament breakage detection.

This invention discloses a protective component and a safety helmet device, relating to the technical field of safety protection devices. The protective component includes earmuffs and a connecting arm for connecting a safety helmet. One of the earmuffs and the connecting arm has a protruding sliding post, and the other has a locking groove. The opening of the locking groove extends in a strip shape, and multiple locking positions are distributed on the sidewall of the locking groove along its extension direction. The sliding post is slidably connected to the locking groove and engages with one of the locking positions. The technical solution provided by this invention aims to reduce the difficulty of adjusting the relative position of the earmuffs and the connecting arm, ensuring the ease of use of the protective component.

The invention provides a switching locking device, a rack rail vehicle power switching system and a rack rail vehicle. The switching locking device is arranged in the gearbox and comprises a gear part and a rotating shaft connecting part fixedly arranged on the switching support, the gear part is provided with a plurality of locking gears, and the locking gears comprise a toothed rail gear, a neutral gear and an adhesion gear which are sequentially arranged in the length direction of the rotating shaft connecting part; the sleeve is fixedly arranged on the gear box, and a guide cavity is formed in the sleeve; at least part of the gear locking piece extends out of the guide cavity, and the gear locking piece is used for selectively locking the gear of the rack rail, the adhesion gear or the neutral gear; the adjusting assembly is arranged in the guide cavity and used for providing elastic jacking force for the gear locking piece so that the gear locking piece can be locked at the locking gear. According to the switching locking device, the power gear can be flexibly adjusted, and the switching precision and stability of rack rail power and adhesion power are improved.

The utility model discloses a MASK photomask surface particulate matter removing device which comprises a base, a supporting frame is fixedly arranged on the base, an adjusting arm is connected to the supporting frame, a mounting plate is connected to the top end of the adjusting arm, a spray head is fixedly arranged on the mounting plate, a flow adjusting mechanism is arranged at the top end of the spray head, and the flow adjusting mechanism is arranged on the top end of the spray head. The flow adjusting mechanism comprises a mounting sleeve, a sliding groove, a sliding block, baffles, a connecting plate, an adjusting sleeve and an external pipe, the flow adjusting mechanism adopts a multi-baffle linkage adjusting design, synchronous opening and closing of the baffles are achieved through cooperation of the sliding block and the sliding groove, and the sectional area of an airflow channel can be accurately adjusted according to the requirements of particulate matter with different particle sizes; the pain point that a traditional device cannot precisely control the air flow is solved.

The utility model discloses a kind of electric wheelchair controllers of convenient dismounting, including controller body, the sidewall of controller body is fixedly connected with mounting rod, the outside of mounting rod is provided with fixed block, the inside of fixed block is provided with quick release component for the quick release of mounting rod, the inside of fixed block is provided with limiting component for the limiting of mounting rod.Quick release component for the quick release of mounting rod is set, only needs to be inserted mounting rod and can be completed preliminary limiting by rotating, reverse operation can be disassembled, without tool, substantially improve maintenance or replacement efficiency, and using limiting component carries out secondary limiting to mounting rod, avoid accidental displacement in use, ensure that controller is stable and reliable in driving.

The utility model belongs to passenger car door emergency valve technical field, and disclose a passenger car door safety emergency valve, including the mounting panel, the upper surface fixed connection of mounting panel has the emergency valve body, is provided with the valve body control lever on the emergency valve body, the inner fixed surface of valve body control lever is connected with the spring, the top fixed connection of spring has the jackscrew, the upper surface fixed connection of jackscrew has the connecting block, the outer fixed surface of connecting block is connected with the rotary lever, the upper surface fixed connection of mounting panel has the casing, be provided with the slot on the casing, be provided with the limit slot on the one side top of slot. Through the cooperation of rotary lever and slot, the rotary direction of rotary lever is limited, so that it can only rotate in one direction, one-way design can make the operation unique, without judging positive and negative, one-way design only needs to rotate in the unique direction to trigger opening, even if it is the first operation can quickly get started, reduce the operation failure rate in emergency, without judging direction, shorten the operation reaction time, reduce human error.

The utility model discloses an adjustable gas transmission assembly suitable for respiratory therapy equipment, the gas transmission assembly comprises a gas inlet and a gas outlet, the gas transmission assembly further comprises a first gas transmission section and a second gas transmission section, the first gas transmission section is internally provided with a first gas transmission channel communicated with the gas inlet, and the second gas transmission section is internally provided with a second gas transmission channel communicated with the gas outlet; the first gas transmission section and the second gas transmission section are telescopically connected through a communicating piece, and a communicating pipeline for communicating the first gas transmission channel and the second gas transmission channel is arranged in the communicating piece; the second gas conveying section can move relative to the first gas conveying section through the communicating piece so as to adjust the relative distance between the first gas conveying section and the second gas conveying section. According to the gas transmission assembly, the first gas transmission section and the second gas transmission section are connected through the communicating piece, and the relative position between the second gas transmission section and the first gas transmission section can be adjusted through the communicating piece according to users with different head circumference sizes, so that the wearing comfort of the gas transmission assembly is improved, and the adaptability of the gas transmission assembly is enhanced.

This utility model discloses a foldable protective screen for a CT scan room, mainly composed of a counterweight frame, multiple sets of shielding plates, and hinges. The shielding plates adopt a composite structure of a stainless steel outer layer and a lead layer. Adjacent shielding plates are seamlessly hinged through interlocking parts and openings to eliminate radiation leakage gaps. The bottom of the shielding plates is equipped with casters and a lead curtain combination, balancing ease of movement and bottom protection. A limiting component is configured on the rear shielding plate to achieve fixed position. This design ensures compliance with medical radiation protection standards while solving the technical pain points of traditional protective devices, such as inconvenience in movement and weak protection at joints. It is particularly suitable for medical locations such as CT scan rooms where frequent adjustments to the protective layout are required.

The invention provides a positioning bending mechanism with a scale and a segmented bending device for a spine orthopedic rod, belongs to the technical field of surgical medical instruments, is used for pre-bending the spine orthopedic rod before an operation, and comprises a base component, a fixed clamping component, a sliding clamping component, a positioning carriage component and a rotary cylinder component, according to the core working principle, the longitudinal position of a bending point is determined through a linear sliding rail and a side ruler of the linear sliding rail, a bending plane is set through an angle adjusting ruler of a rotating cylinder assembly, and the bending displacement amount is preset and monitored in real time through a displacement measuring instrument installed on an adjusting rotating cylinder; during operation, the bending bolt is screwed to push the bending clamping seat to apply pressure to the orthopedic rod until the deformation of the orthopedic rod reaches a preset value; according to the device, preoperative three-dimensional planning is converted into quantifiable operation in three dimensions of linearity, angle and displacement, closed-loop control from measurement positioning to accurate bending is achieved, and the accuracy, efficiency and repeatability of orthopedic rod forming are remarkably improved.

The utility model relates to a kind of explosion-proof transfer flatcar, involving transfer car technical field, including frame, transfer track, automatic and manual driving device etc..Frame is composed of box girder, end beam etc., high structural strength, and fence is equipped to improve security.Transfer track is detachably installed in the top sink of frame.Automatic driving device contains driving wheel, explosion-proof driving motor etc., can stably drive frame to walk;Manual driving device contains driven wheel, speed reducer etc., when motor fails or needs to fine-tune position, it can be manually or driven by electric wrench.Driving motor and speed reducer output end are all equipped with clutch, can switch power source to make corresponding component be in free state.Frame both ends have parking device, containing fixed seat, telescopic cylinder and brake pad, can realize parking function.The utility model can meet the explosion-proof requirement of dangerous environment operation, with automatic walking, manual or electric wrench fine-tune position and other multiple functions, improve the flexibility and adaptability of use.

The invention discloses a dust fall device for solid wood board cutting, and relates to the technical field of atomization dust fall, the dust fall device comprises a processing table, a cutting base plate is fixedly mounted at the top of the processing table, a rectangular saw groove is formed in the top of the cutting base plate, and table saw cutting equipment is arranged on the surface of the processing table; the bench saw cutting equipment comprises a bench saw cutting equipment body, the bench saw cutting equipment body is fixedly installed at the bottom of the machining table, the saw blade cutting end of the bench saw cutting equipment protrudes out of the top of a cutting base plate through a rectangular saw groove, the dust falling box fixedly penetrates through the top of the machining table, and a dust suction opening is formed in the side, close to the cutting base plate, of the dust falling box; and by arranging a drainage plate, the problem that after water mist enters the telescopic cover, wood dust generated by cutting adheres to the inner wall of the telescopic cover, and the negative pressure suction effect is reduced can be effectively solved.

This utility model relates to the field of folding wing technology and discloses a marine folding wing structure, including a hull, a support plate fixedly connected inside the hull, a steering wheel mounted on the top of the support plate, a generator mounted on the right side of the hull, an outer shell fixedly connected inside the hull, a flipping assembly disposed inside the outer shell, and a clamping assembly disposed on the top of the hull; the flipping assembly includes a dual-head motor, the bottom of which is fixedly connected inside the outer shell, and two output ends of the dual-head motor are fixedly connected to a rotating rod. In this utility model, through the coordinated action of the dual-head motor, rotating rod one, rotating rod two, bevel gear one, and bevel gear two, the folding wing body can be deployed and retracted, thereby enabling the folding wing to be flexibly adjusted according to navigation needs, effectively adapting to different navigation environments, and improving the ship's maneuverability.

The application relates to the field of neurosurgical medical equipment and discloses a brain operation auxiliary treatment device for neurosurgery, which comprises a fixing base, a gear groove and a ratchet groove are arranged in the fixing base, a connecting block is slidably connected in the fixing base, a locking cavity is arranged in the connecting block, a clamping assembly is slidably connected to the top end of the connecting block, a locking assembly is arranged in the locking cavity, the locking assembly comprises a ratchet pawl, one end of the ratchet pawl is in sliding contact with a limiting plate, the limiting plate is in abutment with a limiting cam on one side, and the limiting cam is rotationally connected to an adjusting block. In the application, the fixing base is divided into the gear groove and the ratchet groove, the connecting block bears the clamping assembly and is internally provided with the locking cavity, the structure realizes clear function division, and the transmission and the locking mechanism are prevented from interfering. In cooperation with the ratchet pawl, the limiting plate, a return spring and a reverse ratchet, the first return spring always pushes the limiting plate to abut against the limiting cam, so that the locking can be instantly responded.

This utility model relates to the field of sensor processing technology, and in particular to a high-sensitivity heart rate sensor processing platform with an adjustable limiting structure. It includes a table, a vacuum suction cup, and a fine-tuning mechanism. The mounting mechanism is located above the table, and the fine-tuning mechanism is located above the mounting mechanism. Each fine-tuning mechanism has a set of vacuum suction cups above it. The surface of the vacuum suction cups has a cross-shaped groove, and four sets of limiting frames are slidably connected inside the groove. The limiting frames are internally threaded with set screws. This utility model achieves position adjustment by allowing the limiting frames to slide within the groove. After adjustment, the set screws mechanically lock the limiting frames to prevent accidental displacement, thus adapting to the precise positioning of heart rate sensors of different package sizes on the vacuum suction cups. The sensor is fixed by the negative pressure adsorption of the vacuum suction cups. The fine-tuning mechanism has a position adjustment function, which can adapt to the positioning requirements of different processing positions of the heart rate sensor, ensuring the accuracy and stability of the processing process.

The invention relates to the technical field of air tightness detection of an electric drive vehicle-mounted compressor shell, and discloses an air tightness detection device for the electric drive vehicle-mounted compressor shell, which comprises an air tightness detection box, and further comprises a metal net placement box located in the air tightness detection box; through the transmission design that a worm gear and a worm are matched with a servo motor, precise control over lifting of the metal net containing box and synchronous action of multiple components are achieved, the self-locking function of the device can effectively avoid accidental displacement of the metal net containing box in the detection process, and meanwhile the sliding fit structure of a steel rope and a limiting wheel is matched, so that the detection accuracy is improved. The lifting smoothness is improved while the transmission friction loss is reduced; and by combining the design of the pressing cover with the observation opening, the sealing and fixing effect during shell detection is guaranteed, a worker can check the bubble condition in the box in real time, a plurality of shells can be detected at a time, the detection efficiency is relatively high, and a user can use the device conveniently.

The utility model provides a coil lifting appliance which comprises a lifting appliance main body and a lifting beam, the lifting beam is fixedly connected with the lifting appliance main body, the lifting beam extends along the horizontal direction, a slide rail is mounted on the lifting beam, and the extension direction of the slide rail is the same as that of the lifting beam; a lifting claw is arranged at one end of the lifting arm, a sliding block is installed at the other end of the lifting arm, and the sliding block is in sliding connection with the sliding rail; the adjusting device comprises a plurality of adjusting grooves formed in the hanging beam in the extending direction of the hanging beam and spring balls, the spring balls are fixedly arranged at the ends, close to the hanging beam, of the hanging arms, and the spring balls are in rolling connection with the adjusting grooves; wherein the number of the lifting beams and the number of the lifting arms are both at least two, and a containing space for containing a coil is formed between the at least two lifting arms. According to the coil lifting appliance, the technical problem that the diameter of the lifting claw of the coil lifting appliance is inconvenient to adjust in the prior art is solved.

The utility model discloses an automobile stand column exterior trimming panel assembly assembling tool, and relates to the technical field of automobile exterior trimming panel assembling, the automobile stand column exterior trimming panel assembly assembling tool comprises a bottom plate, the top surface of the bottom plate is respectively provided with a chute A and a chute B in a cross shape, the side surface of the bottom plate is fixedly connected with a supporting plate at the position of one end of the chute A and the position of one end of the chute B, and the side surface of the bottom plate is fixedly connected with the supporting plate. The surfaces of the supporting plates are fixedly connected with air cylinders. According to the assembling tool for the automobile stand column exterior trim panel assembly, independent adjustment in the front-back direction and the left-right direction of a trim panel is achieved through the sliding grooves A and the sliding grooves B which are formed in the bottom plate in a crossed mode in cooperation with sliding blocks and air cylinder driving, and when the curved surface of the trim panel makes contact with the guide columns, springs arranged in the grooves in a layered mode push buffer blocks to conduct graded buffering, so that the positioning precision is guaranteed; and trim panel indentation caused by rigid contact is avoided, the positioning deviation and the crushing risk in the curved trim panel assembling process are effectively avoided, and the adaptability to the complex curved trim panel is remarkably improved.