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27results about How to "Improve steering performance" patented technology

Double-flow transmission mechanism with randomly adjustable turning radius

The utility model discloses a double-flow transmission mechanism with randomly adjustable turning radius, which comprises two groups of differential transmission components which are symmetrically arranged, and each differential transmission component consists of a shell structure and a gear mechanism. In addition, the device further comprises a driving motor A, a driving motor B and a split-flow transmission mechanism, the driving motor A is in power connection with the shell mechanism, the driving motor B is connected with the split-flow transmission mechanism, and the split-flow transmission mechanism is connected with the two gear mechanisms. The shunting transmission mechanism is composed of a spline shaft, a spline sleeve, a locking head, a locking groove, a supporting spring and an electric telescopic cylinder. The spline shaft is connected with the driving motor B. The locking head is in sliding fit with the spline sleeve, the supporting spring stabilizes the position of the locking head, and the electric telescopic cylinder is used for adjusting the position of the spline sleeve. By means of the mechanism, the crawler can accurately adjust the turning radius according to actual requirements, the problems that in the prior art, the turning radius cannot be adjusted, and steering is inaccurate are solved, and maneuverability, flexibility and stability under complex working conditions are remarkably improved.
Owner:HUNAN NONFERROUS METALS VOCATIONAL & TECHN COLLEGE

Steering mechanism, steering wheel assembly and vehicle

The present invention discloses a steering mechanism, a steering wheel assembly and a vehicle, wherein the steering mechanism includes: a matching mounting structure, a driving structure, a shock absorber assembly and a bearing assembly. A matching protrusion is formed in the middle of the matching mounting structure; a mounting groove is formed on the top of the shock absorber base, the matching protrusion is rotatably matched in the mounting groove, a connecting column passes through the matching protrusion to connect with the driving structure, and the driving structure drives the shock absorber assembly to rotate; a first bearing is arranged between the matching protrusion and the mounting groove, and a second bearing is arranged between the matching protrusion and the connecting column, so that the shock absorber assembly can rotate relative to the matching mounting structure. The arrangement position of the steering mechanism is not limited, and the arrangement space occupied is smaller, which is more convenient to arrange on the vehicle body, and the wheels can be driven to steer independently, so as to effectively increase the rotation angle of the wheels, thereby increasing the steering driving mode of the wheels, and thus effectively improving the steering performance of the vehicle.
Owner:GREAT WALL MOTOR CO LTD

Wheelchair for rehabilitation training

The utility model belongs to the technical field of wheelchairs, and particularly relates to a wheelchair for rehabilitation training, which comprises a base, and a vertical pad is arranged on one side of the base; the rehabilitation wheelchair has the general functions of a common wheelchair, meanwhile, the cam drivers drive the corresponding rubber cams to swing left and right, the good massage effect on leg muscles of a patient is achieved, the massage speed and the massage effects of the different rubber cams can be adjusted through the controller according to the requirements of the patient, and the rehabilitation effect is achieved. The operation is very convenient; a first motor drives a rotating plate to swing back and forth within a certain amplitude range, the legs of a patient can be driven to swing up and down, it is guaranteed that the legs of the patient cannot be damaged in the repeated rotating process of the rotating plate through a pedal universal rod, and the swing amplitude can be adjusted according to the requirements of the patient; the leg rehabilitation device has the advantages that muscles of a patient can be well massaged, legs can be subjected to certain rehabilitation exercise, and rapid rehabilitation of the patient is benefited.
Owner:NANZHAO COUNTY FENGLU HOSPITAL CO LTD +1

Steering system and automobile

ActiveCN111114629Bsmall footprintThe connection relationship is simpleElectrical steeringMotor deposition
The invention discloses a steering system and a car, and relates to the technical field of car steering. The steering system comprises a wheel hub motor frame, a steering mechanism and a suspension mechanism, wherein the wheel hub motor frame is used to support the wheel hub motor; the steering mechanism comprises a driving motor, a reducer and a steering gear, wherein the output shaft of the driving motor is connected to the input shaft of the reducer, the input end of the steering gear is connected to the output shaft of the reducer, and the output end of the steering gear is connected to the wheel hub motor frame; the suspension mechanism comprises an air spring shock absorber assembly, and the air spring shock absorber assembly is connected to the output end of the steering gear through the wheel hub motor frame. The wheel hub motor frame provided in the steering system can not only support the connection between the wheel hub motor and the wheel hub, so that the wheel hub motor drives the wheel to move independently; and the steering mechanism and the suspension mechanism can be connected to the wheel through the wheel hub motor frame, so that the connection relationship between the steering mechanism and the suspension mechanism and the wheel is simple, and occupies little space.
Owner:SUZHOU AUTOMOBILE RES INST OF TSINGHUA UNIV (WUJIANG) +1

Attached vibrator mounting structure for thin-wall concrete retaining wall construction

The invention relates to the technical field of concrete construction, in particular to an attached vibrator mounting structure for thin-wall concrete retaining wall construction, which comprises a plurality of mechanical systems, an electrical control system and a template, each mechanical system comprises two displacement mechanisms, two adsorption structures and two fixing devices, the outer surface of each vibrator is clamped to the top of the corresponding displacement mechanism and the top of the corresponding adsorption structure through two corresponding fixing devices, and each displacement mechanism and each adsorption structure are in communication connection with the electrical control system. The device has the advantages that friction force and steering torque on the formwork can be improved, the steering capacity of the crawler belt on the formwork is enhanced, the slipping phenomenon is reduced, the vibrator can be rapidly installed on the carrier through the fixing assembly, and therefore the positioning time and the installation time of the vibrator are shortened through assistance of the crawler belt and the steering side wheels, and the production efficiency is improved. And the construction time can be shortened.
Owner:CHINA POWER CONSTR MUNICIPAL CONSTR GRP SHANDONG ENG CO LTD

Substrate management system for aquaculture pond

The utility model relates to the technical field of aquaculture, in particular to a substrate management system for an aquaculture pond, which comprises the aquaculture pond, an operation module, a traction module, fixing modules and a furling module, traction points are arranged on the peripheral side of the aquaculture pond, the operation module, the traction module and the furling module are sequentially connected, and a plurality of fixing modules are arranged around the aquaculture pond; the operation module enters the aquaculture pond and drives one end of the traction module to wind all the fixing modules from the traction point until one end of the traction module moves and is connected to the furling module; after the fixing module is detached, the winding module winds the traction module, so that the traction module is in contact with the bottom of the aquaculture pond, and the bottom turning effect of the aquaculture pond is achieved. The traction module is pulled through the operation module to avoid water equipment and sundries, cables are laid underwater in the aquaculture pond, then the traction module is wound through the winding module, the bottom of the pond is scraped and turned over through the traction module, and mechanical operation of substrate management is achieved.
Owner:ZHUHAI LIYANG SEEDLING BREEDING CO LTD

Steering intermediate shaft assembly for vehicle and vehicle

The utility model discloses a steering intermediate shaft assembly for a vehicle and the vehicle, the steering intermediate shaft assembly comprises a first intermediate shaft, a second intermediate shaft, a force transmission piece and an elastic piece, and the first intermediate shaft forms a containing cavity; a matching part is formed at one end of the second intermediate shaft and is arranged in the accommodating cavity; the force transmission piece is arranged in the containing cavity, and the force transmission piece is of a ring shape arranged on the periphery of the matching part in a sleeving mode and matched with the first intermediate shaft and the second intermediate shaft so as to be suitable for transmitting torque between the first intermediate shaft and the second intermediate shaft. The elastic piece is arranged on the force transmission piece and suitable for generating elastic force enabling the force transmission piece to be tightly matched with the first intermediate shaft and the second intermediate shaft. According to the steering intermediate shaft assembly, through the arrangement of the force transmission piece and the elastic piece, close fit of the first intermediate shaft and the second intermediate shaft is achieved, the assembling gap is effectively reduced or eliminated, the driving comfort and the vehicle steering performance are improved, and potential safety hazards are reduced.
Owner:BEIJING AUTOMOBILE RES GENERAL INST

Auv multi-propeller power system

This invention provides an AUV multi-thrust propulsion system, comprising stabilizers, auxiliary rim thrusters, an AUV stern body, main rim thrusters, fairings, connecting discs, and a tail-mounted connecting frame. The main rim thrusters are fixedly connected to the rear end of the AUV stern body via the connecting discs. The fairings are positioned behind the blades of the main rim thrusters. The four auxiliary rim thrusters are uniformly fixed in a cross shape around the circumference of the AUV stern body. The four stabilizers are arranged in an X-shape on the stern body, staggered and evenly spaced with the four auxiliary rim thrusters. The advantages of this invention are increased maneuverability and controllability while reducing the complexity of the drive mechanism, saving stern space, and increasing the power, maneuverability, and system redundancy of the propulsion system by using multiple rim thrusters, thereby improving the safety, stability, controllability, and mission execution efficiency of the AUV in complex underwater environments.
Owner:WUHAN XINDINGTAI TECH CO LTD

Electronic power-assisted steering device for tricycle

PendingCN119611595ARealize the electric power assist functionImprove steering performanceSteering deviceControl engineeringStructural engineering
The electronic power-assisted steering device for the tricycle belongs to the technical field of tricycles and comprises a steering wheel, a locking assembly is arranged on the left side of the steering wheel, an acting assembly is arranged on the inner side of the steering wheel, a transmission joint is fixed to the right side of the steering wheel, and a connecting rod is fixed to the bottom of the transmission joint. A power assisting mechanism is arranged on the outer side of the connecting rod, a driving assembly is arranged at the bottom of the connecting rod, a connecting plate is fixed to the driving assembly, a transmission assembly is arranged on the right side of the connecting plate, an adjusting rod is fixed to the transmission assembly, a stabilizing cylinder is rotationally connected to the outer side of the adjusting rod, and a lubricating mechanism is arranged on the left side of the stabilizing cylinder. According to the electronic power-assisted steering device for the tricycle, through the arrangement of the power-assisted mechanism, the steering effect is improved, the unfolding disc is controlled through the locking assembly, the steering effect of the tricycle is improved, through the arrangement of the lubricating mechanism, the steering effect of the device is improved, and the steering effect of the whole device is good.
Owner:CHONGQING XINBOZHI ELECTROMECHANICAL CO LTD

Chassis for a mobile transport system and mobile transport system

ActiveCN116963958BSimple structureImprove steering performance
The present invention relates to a chassis (10) for a mobile transport system, the chassis comprising: a frame (12) and at least four wheel modules (21, 22, 31, 32), each wheel module having at least one wheel (41, 42, 43, 44), the mobile transport system (10) comprising a swing arm (14) swaying relative to the frame (12) about a swing axis (13) extending in the longitudinal direction (X), at least two of the wheel modules (21, 22, 31, 32) being mounted on the frame (12), and the wheels (41, 42, 43, 44) of the wheel modules (21, 22, 31, 32) each about a swing axis extending in the vertical direction (Z). Lines (61, 62, 63, 64) are supported in a manner that allows them to oscillate relative to the frame (12) and rotate relative to the frame (12) about a horizontally extending axis of rotation (51, 52, 53, 54). At least two of the wheel modules (21, 22, 31, 32) are mounted on a swing arm (14). The wheels (41, 42, 43, 44) of the wheel modules (21, 22, 31, 32) are supported relative to the swing arm (14) in a manner that allows them to oscillate relative to the swing arm (14) about a vertically extending axis of rotation (61, 62, 63, 64) and rotate relative to the swing arm (14) about a horizontally extending axis of rotation (51, 52, 53, 54). The invention also relates to a mobile transport system, particularly for transporting objects in a technical facility, the mobile transport system comprising a chassis (10) according to the invention.
Owner:SEW EURODRIVE GMBH & CO KG

Electronic guide rubber wheel vehicle

The invention provides an electronic guiding rubber wheel vehicle which comprises a first vehicle head, a second vehicle head and at least one middle compartment, and the at least one middle compartment is located between the first vehicle head and the second vehicle head. The sides, facing the middle compartment, of the first headstock and the second headstock are each provided with a power bogie, and the two opposite sides of the middle compartment are each provided with a power bogie. The bogies are redistributed, the purpose of uniform power distribution of the whole vehicle is achieved, the stability of the vehicle in the running process is higher, the first vehicle head, the middle compartment and the second vehicle head are all provided with the power bogies and are relatively independent in the turning and braking process, and compared with power centralized driving, abrasion of driving wheels can be reduced; in addition, the multi-marshalling power requirement can be met, a cabin body structure below the seats is omitted, the seats are arranged more flexibly, the vehicle head is arranged in a front suspension mode, and the high-speed running stability and performance of the vehicle can be improved.
Owner:HUNAN CRRC INTELLIGENT TRANSPORT TECH CO LTD

Transfer hydraulic trolley

The utility model provides a transfer hydraulic trolley, which relates to the technical field of hydraulic trolleys, and comprises a frame, the surface wall of the frame is fixedly connected with two wheel rotating pieces, the surface walls of the two wheel rotating pieces are rotatably connected with gears, one side of the surface wall of each gear is meshed with a rack, and the surface wall of each rack is rotatably connected with two first connecting rods. Second connecting rods are rotationally connected to the surface walls of the two first connecting rods, a steering handle is rotationally connected to one side of the surface wall of the gear on one side, two steering plates are installed on the surface wall of the trolley frame, and under the action of the steering handle, a user pushes the hydraulic trolley trolley to advance, and when turning is needed, the user rotates the steering handle to drive the hydraulic trolley trolley to turn. The steering grip rotates to drive the gear to rotate, then the first connecting rod, the second connecting rod and the steering plate are driven to move, finally the connecting plate and the universal wheels are driven to move, the steering capacity of the hydraulic trolley is improved, and the working efficiency of material transportation operation is improved.
Owner:CHANGZHOU RUIYANG HYDRAULIC EQUIP CO LTD

Optimization design method for steering mechanism of digital track rubber wheel train

The invention discloses an optimization design method for a steering mechanism of a digital track rubber wheel train, which is used in the field of track traffic and comprises the following steps of: setting boundary conditions of the steering mechanism of the digital track train in an actual operation state based on structural characteristics of the digital track train; a mathematical model containing dynamic coordination and stress balance is constructed; according to various constraint conditions of the digital track rubber wheel train, a target function used for evaluating steering performance is set, and by applying a multi-target intelligent optimization algorithm, an optimization design scheme of a steering mechanism is obtained through analysis and solving according to a mathematical model. According to the method, a dynamic coordination and stress balance mathematical model and a multi-target intelligent optimization algorithm are combined, the design of the steering mechanism is optimized, a genetic algorithm and a particle swarm optimization algorithm are integrated to adapt to different design requirements, and meanwhile, the design accuracy and efficiency are improved.
Owner:CRRC NANJING PUZHEN CO LTD

Electric power steering machine with planetary gear transmission mechanism

The utility model relates to the technical field of automobile steering systems, in particular to an electric power steering machine with a planetary gear transmission mechanism, which comprises a casing, a motor, a belt, a tie rod and the planetary gear transmission mechanism. The two ends of the planetary gear transmission mechanism are exposed out of the shell and are respectively connected with a transverse pull rod. Compared with the prior art, ball screw transmission is replaced by planetary gear transmission, the planetary gear transmission coefficient is high, the friction coefficient is small, the rack transmission efficiency is improved, and the overall steering performance and bearing capacity of the steering engine are enhanced; the number of parts is reduced, the cost is reduced, and cost reduction and efficiency improvement of enterprises are facilitated; the production line rhythm is increased, and the production efficiency is improved; the overall weight is reduced, lightweight design is facilitated, disassembly and assembly are convenient, and maintainability and replaceability are improved.
Owner:BOSCH HUAYU STEERING SYST CO LTD

Multi-scene adaptive intelligent inspection unmanned ship based on internet of things

The application relates to the technical field of unmanned ship inspection and discloses a multi-scene self-adaptive intelligent inspection unmanned ship based on Internet of Things, which comprises a ship body bearing seat, a suspension structure symmetrically arranged on the two sides of the ship body bearing seat and providing buoyancy for the inspection unmanned ship, a power component located at the tail end of the suspension structure and providing power for the inspection unmanned ship, a collection bin arranged on the upper end of the suspension structure, auxiliary collection components arranged between the collection bins and capable of acting on water flow, a flow guide filtering mechanism assembled at the middle rear end of the collection bin, the flow guide filtering mechanism comprising an adjustable supporting component, a fixed component, a flow guide component and a flexible intercepting component, the adjustable supporting component is fixedly connected with the collection bin, the flow guide component is connected with the adjustable supporting component and is linked to realize angle adjustment, the flexible intercepting component is connected between the two flow guide components to form a floating object intercepting area, and an integrated module is integrated in the ship body bearing seat.
Owner:JIANGSU DINGDA ELECTRIC TECH CO LTD

A modular steering system for unmanned ships

The present invention discloses a modular steering system for an unmanned ship, the steering system comprising a control module, a steering module, a steering module and a control module; the control module is connected with the steering module, the steering module and the control module; the steering module can provide a human-machine operation interface; the steering module can provide steering power for the unmanned ship; the control module can display the information of the steering system and can provide a human-machine operation interface; the control module, as the control center of the steering system, can accept action instructions from the control module or the steering module, and forward the instructions to the steering module after processing, so as to realize the automatic steering function of the unmanned ship; the control module can drive the steering module to act according to the real-time steering state of the steering module, so as to mechanically display the steering state through the steering module; the control module can drive the control module to act according to the real-time steering state of the steering module, so as to digitally display the steering state through the control module.
Owner:青岛无疆技术有限公司

Magnetic climbing robot

ActiveCN224197858Uflexible steeringImprove steering performanceWheelsVehiclesSteering wheelDrive wheel
The utility model discloses a magnetic climbing robot, which relates to the technical field of robots and comprises a frame, a steering wheel set and two driving wheel sets, the steering wheel set and the two driving wheel sets are arranged on the frame, and the two driving wheel sets are arranged on one side of the steering wheel set along the front-back direction of the frame. The two driving wheel sets are arranged on the two sides of the steering wheel set in the left-right direction of the vehicle frame correspondingly. The steering wheel set comprises a first support, a first magnetic wheel set and a first supporting wheel, the first support is rotationally arranged on the frame, and the first magnetic wheel set and the first supporting wheel are rotationally arranged on the first support through a first rotating shaft; the number of the first supporting wheels is at least three, the number of the first magnetic wheel sets is multiple, the at least three first supporting wheels are arranged at intervals in the central axis direction of the first rotating shaft, and at least one first magnetic wheel set is arranged between any two adjacent first supporting wheels. According to the technical scheme, the technical problem that a magnetic climbing robot is poor in steering capacity can be solved.
Owner:SHENZHEN JINWAN FEIXUN TECH CO LTD

Four-wheeled agricultural chassis

The invention discloses a four-track-wheel agricultural chassis, comprising a chassis frame, two crawler wheels are respectively installed on both sides of the chassis frame, each crawler wheel is independently installed on the chassis frame, and the two crawler wheels on each side of the chassis frame are connected to an independent rotation drive device and driven by the rotation drive device to rotate synchronously. The four-track-wheel agricultural chassis has the advantages of simple and compact structure, low cost, convenient installation and maintenance, good steering performance, etc.
Owner:HUNAN TOBACCO CHENZHOU +1

A special device for harvesting and packing alfalfa

The utility model discloses an alfalfa is reaped and is packed special device belongs to alfalfa reaping machinery technical field, the utility model discloses a rear box body, and the left side of rear box body front and back is all rotatoryly connected electric wheel, and the right side of rear box body front and back is all set up steering wheel, and the left side of rear box body is connected with the front frame, and the left side of front frame inner wall bottom is provided with cutting saw, and the cutting saw of front frame left side and reaping roller work in cooperation, can efficiently cut alfalfa, the peg tooth of reaping roller and poking conveying roller surface staggered arrangement can effectively snatch and convey alfalfa, avoid alfalfa scattering in the reaping process, improve reaping efficiency, drive motor passes through transmission belt and drives first driven wheel and second driven wheel simultaneously, makes reaping roller and poking conveying roller synchronous operation, guarantees the whole reaping and conveying process's coordination and stability to high -efficiently complete alfalfa's reaping and conveying collection work, and lay the foundation for the subsequent packing link.
Owner:喀什地区草原站

Front-drive steering drive axle housing assembly, front-drive steering drive axle and vehicle

ActiveCN224726691UHigh turning rangeimprove security
The utility model relates to vehicle steering technical field, specifically disclose a kind of front drive steering drive axle housing assembly, front drive steering drive axle and vehicle, the front drive steering drive axle housing assembly includes axle housing body and two knuckle forks, axle housing body is along the both ends of its own extension direction and is provided with first flange, two knuckle forks are provided with second flange, and the second flange of two knuckle forks is connected with two first flange one-to-one, the size of first flange along horizontal direction is less than its own along vertical direction size, the size of second flange along horizontal direction is less than its own along vertical direction size.This front drive steering drive axle housing adopts split type structure, it is favorable to reduce under spring mass, avoid the influence of half axle sleeve pipe and other structures to corner;The size of first flange and second flange after connection in horizontal direction is smaller, can effectively reduce the influence to corner range, and then make the front drive steering drive axle housing assembly have greater corner range.
Owner:FAW JIEFANG AUTOMOTIVE CO

Steering wheel assembly and vehicle

The present invention discloses a steering wheel assembly and a vehicle, wherein the steering wheel assembly comprises: a matching mounting structure, a steering input shaft, a shock absorber assembly, a bearing assembly and a wheel. A mounting sleeve is formed in the middle of the matching mounting structure; the steering input shaft vertically passes through the mounting sleeve and is connected to the shock absorber base, and the steering input shaft and the mounting sleeve are clearance-matched; the bearing assembly is clamped and fixed at the upper and lower ends of the mounting sleeve and is matched with the steering input shaft so that the steering input shaft can rotate relative to the matching mounting structure, and the upper end of the steering input shaft has a first structure, and the bearing assembly is clamped between the first structure and the shock absorber base. The arrangement position of the steering wheel assembly is not limited, and the arrangement space occupied is smaller, which is more convenient to arrange on the vehicle body, and the wheel can be driven to steer independently, so as to effectively increase the rotation angle of the wheel, thereby increasing the steering driving mode of the wheel, and thus effectively improving the steering performance of the vehicle.
Owner:GREAT WALL MOTOR CO LTD

Peristaltic soft robot

The invention relates to a robot, in particular to a peristaltic soft robot which comprises N sections of silica gel barrels and N + 1 connecting bodies fixedly connected to the ends of the silica gel barrels, each connecting body is provided with three rod-shaped feet evenly distributed in the circumferential direction, and compared with the prior art, the silica gel barrels are configured to be capable of stretching out and drawing back in the axial direction and bending in at least eight directions, the rod-shaped foot can stretch in the radial direction, and N is larger than or equal to 1. Compared with the prior art, through the unique design and structure, not only are the adaptability and flexibility of the pipeline robot improved, but also the navigation and control capability of the pipeline robot in a complex pipeline environment is enhanced, and a more efficient and intelligent solution is provided for pipeline detection and maintenance.
Owner:YANTAI NANSHAN UNIV

Drive-by-wire independent steering system and control method thereof

The invention discloses a drive-by-wire independent steering system and a control method thereof, and the system comprises a detection mechanism which is used for detecting a steering wheel angle signal, a current / torque signal of a steering motor, a vehicle speed signal and a front wheel angle signal; the executing mechanism comprises a two-way electromagnetic valve mechanism, two sets of steering motors and two sets of steering mechanisms, and the two sets of steering motors and the two sets of steering mechanisms are symmetrically arranged relative to the two-way electromagnetic valve mechanism; the steering motors are connected with the front wheels through the wheel steering mechanisms, and the steering mechanisms are connected through the two-way electromagnetic valve mechanism. And the control unit is respectively connected with the detection mechanism, the steering motor and the bidirectional electromagnetic valve mechanism. The system is simple in structure, has redundancy, is easy to control, is quick in response, can achieve independent steering of left and right wheels under the normal condition of a steer-by-wire vehicle, improves the steering performance of the vehicle, and improves the maneuverability of the whole vehicle; when the steering motor breaks down, the gears and the racks on the two sides can be combined into a whole in the shortest time, and safe driving and steering of the automobile are guaranteed.
Owner:DONGFENG MOTOR GRP

Multifunctional culture showing stand

The utility model discloses a multifunctional culture showing stand which comprises a base assembly and a showing stand assembly, the showing stand assembly is installed on the base assembly, a transmission assembly is arranged between the base assembly and the showing stand assembly, and the transmission assembly drives the showing stand assembly to rotate relative to the base assembly. The rotary display device has the advantages that the transmission assembly is arranged, the display shell assembly rotates relative to the base assembly, the dynamic rotary display effect can be achieved in the display process, the eyeballs of audiences can be well attracted, meanwhile, novelty and innovation are increased, and the interests of the audiences are aroused; the threaded rod is driven to move through the showing stand driving device, the sliding sleeve can be automatically controlled to move up and down on the guide rod, the connecting rod is further controlled to drive the showing plate to move up and down, and the requirements of people of different heights for the watching height are met.
Owner:ZHENJIANG COLLEGE