Elevator type intelligent three-dimensional parking garage

Abstract

The elevator type intelligent three-dimensional parking garage relates to the technical field of parking garages and comprises a three-dimensional parking garage body, a first servo motor is arranged at the top of the three-dimensional parking garage body, the output end of the first servo motor is connected with a first threaded rod, the circumferential outer wall of the first threaded rod is sleeved with a car moving assembly, and a limiting assembly is arranged at the bottom of the car moving assembly. A placing plate and a displacement sensor are arranged in the three-dimensional parking garage, a T-shaped limiting sliding groove is formed in the side wall of one end of the three-dimensional parking garage, a control panel is arranged on one side of the three-dimensional parking garage, and a first tooth groove is formed in the top end of the placing plate. The elevator type intelligent three-dimensional parking garage is reasonable and reliable in structure and easy to operate, the working efficiency of the elevator type intelligent three-dimensional parking garage is improved under the action of the car moving assembly, meanwhile, under the action of the limiting assembly, the phenomena of car shifting and the like in the car moving process are avoided, potential safety hazards are avoided, and the service life of the elevator type intelligent three-dimensional parking garage is prolonged. And therefore, the safety and applicability of the elevator type intelligent three-dimensional parking garage are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of parking garages, and in particular to an elevator type intelligent three-dimensional parking garage. Background Art

[0002] As the number of cars increases year by year, the car penetration rate is getting wider and wider. Population concentration has led to less and less available space in cities. Due to the lack of parking resources and the serious shortage of parking area, ordinary parking spaces and underground garages can hardly meet the increasingly serious parking needs. In order to alleviate the problem of parking difficulties, it is necessary to use a three-dimensional parking garage to improve the utilization rate of vertical space to alleviate the parking problem. The widespread popularity of three-dimensional parking garages has largely solved the contradiction between the growing number of cars and the limited number of parking spaces as the pace of urbanization advances and people's living standards improve. A three-dimensional parking garage is a man-made parking device with a three-dimensional structure. After the vehicle enters the loading plate, the loading plate is driven to move in the horizontal and vertical directions by the transverse mechanism and / or the lifting mechanism, and finally parked in the designated parking space.

[0003] The current multi-story parking garage is not convenient for fixing vehicles during the moving process, and is not convenient for fixing vehicles with different wheelbases and wheels of different sizes. Vehicle deviation is prone to occur during the moving process, which is not conducive to vehicle transfer and personnel safety, and has limited adaptability.

[0004] For example, Chinese patent CN218493246U discloses a three-dimensional parking garage, including a garage body, a transporter, a parking space and a loading plate. Each parking space is provided with a side shift device, and a lifting device for vertical lifting and transport is provided in front of the garage body. The transporter includes a car picker, and the car picker includes a rotating fork.

[0005] The stereoscopic garage has the following disadvantages: although the vertical transportation of the vehicle is achieved by rotating the cargo fork to extend it laterally under the vehicle chassis, and the side shifting device pushes the vehicle loading plate horizontally to insert it under the vehicle tire to achieve the transfer and horizontal transportation of the vehicle, it is not convenient to fix the vehicle during the moving process, and it is not convenient to fix vehicles with different wheelbases and wheels of different sizes. Vehicle deviation is likely to occur during the moving process, which is not conducive to the transfer of vehicles and the safety of personnel, and has limited adaptability.

[0006] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0007] In view of the problems in the related technology, the utility model proposes an elevator-type intelligent three-dimensional parking garage to overcome the above-mentioned technical problems existing in the existing related technology.

[0008] To this end, the specific technical solutions adopted by the utility model are as follows:

[0009] An elevator-type intelligent three-dimensional parking garage comprises a three-dimensional parking garage, a servo motor 1 is symmetrically arranged at one end of the top of the three-dimensional parking garage, the output end of the servo motor 1 passes through the top of the three-dimensional parking garage and is connected to a threaded rod 1, the circumferential outer wall of the threaded rod 1 is connected to a car moving component, a limiting component is arranged on one side of the bottom of the car moving component, a plurality of placement plates are symmetrically arranged inside the three-dimensional parking garage, a plurality of displacement sensors matched with the placement plates are arranged on the inner side walls of the three-dimensional parking garage, a T-shaped limiting slide groove matched with the car moving component is symmetrically opened on the side wall at one end of the three-dimensional parking garage, a control panel is arranged on one side wall of the three-dimensional parking garage, and a plurality of tooth grooves 1 are opened on the top of the placement plates.

[0010] Furthermore, in order to complete the transfer of vehicles in the vertical and horizontal directions under the action of the vehicle moving assembly, speed up the vehicle entry work, and thus improve the working efficiency of the elevator-type intelligent three-dimensional parking garage, the vehicle moving assembly includes a vehicle carrier frame arranged outside a circle of the threaded rod, a side wall at one end of the vehicle carrier frame is symmetrically provided with a T-shaped limit strip matching the T-shaped limit slide groove, a side wall at the other end of the vehicle carrier frame is provided with a U-shaped plate, and a fixed plate is symmetrically provided on the side of the side wall at the other end of the vehicle carrier frame away from the U-shaped plate, a hydraulic cylinder is provided on the top of the fixed plate, and the output end of the hydraulic cylinder passes through the side wall at one end of the vehicle carrier frame and is connected to the vehicle carrier plate, tooth grooves 2 matching the tooth grooves 1 are provided on both sides of the vehicle carrier plate, and arc grooves matching the limit assembly are provided on the bottom inner walls at both ends of the vehicle carrier frame.

[0011] Furthermore, in order to adapt to the fixing work of vehicles with different wheelbases and wheels of different sizes under the action of the limit assembly, avoid the phenomenon of vehicle deviation during the moving process, which may cause safety hazards, thereby improving the safety and applicability of the elevator-type intelligent three-dimensional parking garage, the limit assembly includes a driving part arranged on one side of the interior of the vehicle carrier, and the limiting parts are symmetrically sleeved on the outer sides of the two ends of the driving part. The driving part includes a servo motor 2 arranged inside the U-shaped plate, and the output end of the servo motor 2 is connected to a transmission rod, and the end of the transmission rod is connected to an adjusting rod passing through the arc groove, and the adjusting rod passes through the bottom of the limiting part, and a rotating rod 1 is penetrated on the side of the bottom of the limiting part away from the adjusting rod, and the outer walls of the two ends of the rotating rod are symmetrically provided with threads 1 in opposite directions. A gear 1 is sleeved on the middle part of the moving rod 1, a gear 2 is meshed with the bottom of the gear 1, a rotating rod 2 is penetrated in the middle part of the gear 2, and fixed seats are connected to the two ends of the rotating rod 2, and a servo motor 3 connected to the rotating rod 2 is penetrated on one end side wall of one of the fixed seats, and the limiting part includes a moving seat sleeved on the adjusting rod and the circumferential outer wall of the rotating rod 1, a placement box is arranged on the top of the moving seat, a placement cavity is provided inside the placement box, a servo motor 4 is penetrated on one end side wall of the placement box, and the output end of the servo motor 4 is connected to the rotating rod 3, and threads 2 in opposite directions are symmetrically provided on the outer walls at both ends of the rotating rod 3, and sliders are symmetrically sleeved on the circumferential outer walls at both ends of the rotating rod 3, and fixing clamps are provided on the top of the sliders, and a groove matching the fixing clamp is provided on the top of the placement box.

[0012] The beneficial effects of the utility model are:

[0013] 1. The utility model has a reasonable and reliable structure and is easy to operate. Under the action of the vehicle moving component, the vehicle can be transferred in the vertical and horizontal directions, which speeds up the vehicle entry into the garage, thereby improving the working efficiency of the elevator-type intelligent three-dimensional parking garage. At the same time, under the action of the limiting component, it can adapt to the fixing work of vehicles with different wheelbases and wheels of different sizes, avoiding the phenomenon of vehicle deviation during the moving process, causing safety hazards, thereby improving the safety and applicability of the elevator-type intelligent three-dimensional parking garage.

[0014] 2. By setting up a displacement sensor, in order to achieve intelligent control, the vehicle position data monitored by the displacement sensor is transmitted to the control panel, the control panel processes the data monitored by the displacement sensor, and controls the operation of the vehicle moving component based on these data, thereby completing the intelligent control of vehicle parking.

[0015] 3. The car moving assembly of the elevator structure composed of the car frame, the car plate, the servo motor 1 and the threaded rod 1 is used to drive the threaded rod 1 to rotate forwardly through the servo motor 1. Under the cooperation of the threaded rod 1 and the car frame, the vehicle is driven to move in the vertical direction. When the vehicle runs to the designated parking space, the hydraulic cylinder pushes the car plate to move horizontally. When the car plate moves to the top of the placement plate, the servo motor 1 is started to drive the threaded rod 1 to reverse, so that the car frame drives the car plate to move downward. At this time, the tooth grooves 2 and 1 on both sides of the car plate are misaligned and moved to the bottom of the placement plate. The vehicle stays on the placement plate, and the hydraulic cylinder is started to retract and the recovery of the car plate is completed, thereby completing the transfer of the vehicle in the vertical and horizontal directions, speeding up the vehicle entry work, and thereby improving the working efficiency of the elevator-type intelligent three-dimensional parking garage.

[0016] 4. By setting a limit assembly, under the action of the driving part, by starting the servo motor three to drive the gear two to rotate, under the meshing action of the gear two and the gear one, the gear one drives the rotating rod one to rotate, and under the cooperation of the thread one and the threaded hole one, the two limit parts are driven to move synchronously, so as to adapt to the fixing work of vehicles with different wheelbases, and by starting the servo motor two to drive the transmission rod to rotate, the transmission rod drives the adjusting rod to move in an arc shape along the inside of the arc groove, so as to drive the limit part to adjust the angle under the action of the adjusting rod to avoid affecting the horizontal movement of the vehicle. At the same time, under the action of the limit part, by starting the servo motor four to drive the rotating rod three to rotate, under the cooperation of the thread two and the threaded hole two, the two sliders drive the fixing clamps to move synchronously, so as to adapt to the fixing work of wheels of different sizes, and the adaptability is wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a three-dimensional diagram of an elevator-type intelligent three-dimensional parking garage according to an embodiment of the utility model;

[0019] Figure 2 It is a cross-sectional view of an elevator-type intelligent three-dimensional parking garage according to an embodiment of the utility model;

[0020] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0021] Figure 4It is a structural schematic diagram of a car moving assembly in an elevator-type intelligent three-dimensional parking garage according to an embodiment of the utility model;

[0022] Figure 5 It is a structural schematic diagram of a driving unit in an elevator-type intelligent three-dimensional parking garage according to an embodiment of the utility model;

[0023] Figure 6 It is a structural schematic diagram of a limiter in an elevator-type intelligent three-dimensional parking garage according to an embodiment of the utility model;

[0024] Figure 7 It is a cross-sectional view of a limiting part in an elevator-type intelligent three-dimensional parking garage according to an embodiment of the utility model.

[0025] In the figure:

[0026] 1. Stereoscopic parking garage; 2. Servo motor 1; 3. Threaded rod 1; 4. Car moving assembly; 401. Car carrier; 402. T-shaped limit strip; 403. U-shaped plate; 404. Fixed plate; 405. Hydraulic cylinder; 406. Car carrier plate; 407. Tooth groove 2; 408. Arc groove; 5. Limit assembly; 501. Driving unit; 5011. Servo motor 2; 5012. Transmission rod; 5013. Adjustment rod; 5014. Rotation rod 1; 5015. Thread 1; 5016. Gear 1 ; 5017, gear two; 5018, rotating rod two; 5019, fixed seat; 50110, servo motor three; 502, limit part; 5021, moving seat; 5022, placement box; 5023, placement cavity; 5024, servo motor four; 5025, rotating rod three; 5026, thread two; 5027, slider; 5028, fixing clip; 5029, groove; 6, placement plate; 7, displacement sensor; 8, T-shaped limit slide; 9, control panel; 10, tooth groove one. DETAILED DESCRIPTION

[0027] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0028] According to an embodiment of the utility model, an elevator-type intelligent three-dimensional parking garage is provided.

[0029] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-Figure 7As shown, according to the embodiment of the utility model, the elevator-type intelligent three-dimensional parking garage includes a three-dimensional parking garage 1, a servo motor 2 is symmetrically arranged at one end of the top of the three-dimensional parking garage 1, the output end of the servo motor 2 passes through the top of the three-dimensional parking garage 1 and is connected to a threaded rod 3, the circumferential outer wall of the threaded rod 3 is connected to a moving car component 4, a limiting component 5 is arranged on one side of the bottom of the moving car component 4, a plurality of placement plates 6 are symmetrically arranged inside the three-dimensional parking garage 1, a plurality of displacement sensors 7 matched with the placement plates 6 are arranged on the inner side walls of the three-dimensional parking garage 1, a T-shaped limiting slide groove 8 matched with the moving car component 4 is symmetrically opened on the side wall at one end of the three-dimensional parking garage 1, a control panel 9 is arranged on one side wall of the three-dimensional parking garage 1, and a plurality of tooth grooves 10 are opened on the top of the placement plates 6.

[0030] In addition, the working principles and structures of servo motor 1 2, servo motor 2 5011, servo motor 3 50110, servo motor 4 5024, hydraulic cylinder 405 and displacement sensor 7 are all existing technologies and will not be elaborated here.

[0031] For the above-mentioned vehicle moving assembly 4, the vehicle moving assembly 4 includes a vehicle carrier 401 arranged outside the circumference of the threaded rod 3, a T-shaped limit strip 402 matched with the T-shaped limit slide groove 8 is symmetrically arranged on the side wall of one end of the vehicle carrier 401, a U-shaped plate 403 is arranged on the side wall of the other end of the vehicle carrier 401, and a fixed plate 404 is symmetrically arranged on one side of the side wall of the other end of the vehicle carrier 401 away from the U-shaped plate 403, and a hydraulic cylinder 405 is arranged on the top of the fixed plate 404, and the hydraulic cylinder 405 outputs The outlet ends pass through the side wall of one end of the vehicle loading frame 401 and are connected to a vehicle loading plate 406. Tooth grooves 407 matching with tooth grooves 10 are provided on both sides of the vehicle loading plate 406. Arc grooves 408 matching with limit components 5 are provided on the bottom inner walls of both ends of the vehicle loading frame 401, so that under the action of the vehicle moving component 4, the vehicle can be transferred in the vertical and horizontal directions, which speeds up the vehicle entry into the warehouse, thereby improving the working efficiency of the elevator-type intelligent three-dimensional parking garage.

[0032] The specific working principle of the vehicle moving component 4 is as follows: the servo motor 2 is started through the control panel 9 to drive the threaded rod 3 to rotate forward, and under the cooperation of the threaded rod 3 and the vehicle carrier 401, the vehicle is driven to move in the vertical direction. When the vehicle runs to the designated parking space, the hydraulic cylinder 405 pushes the vehicle carrier plate 406 to move horizontally. When the vehicle carrier plate 406 moves to the top of the placement plate 6, the displacement sensor 7 transmits the monitored data back to the control panel 9 for analysis, and the control panel 9 starts the servo motor 2 to drive the threaded rod 3 to reverse, so that the vehicle carrier 401 drives the vehicle carrier plate 406 to move downward. At this time, the vehicle carrier plate When the tooth grooves 2 407 and the tooth grooves 10 on both sides of 406 are offset and moved to the bottom of the placement plate 6, the vehicle stays on the placement plate 6. At this time, the displacement sensor 7 transmits the data of the parking completion of the monitored vehicle back to the control panel 9 for analysis (the analysis method and principle of the monitoring data by the control panel 9 are existing technologies and will not be elaborated on here). Based on the analysis results, the control panel 9 starts the contraction of the hydraulic cylinder 405 and completes the recovery of the vehicle loading plate 406, thereby completing the transfer of the vehicle in the vertical and horizontal directions, speeding up the vehicle entry work, and thereby improving the working efficiency of the elevator-type intelligent three-dimensional parking garage.

[0033] In one embodiment, for the above-mentioned limiting assembly 5, the limiting assembly 5 includes a driving part 501 arranged on one side of the inside of the vehicle carrier 401, and the limiting parts 502 are symmetrically sleeved on the outside of the two ends of the circumference of the driving part 501. The driving part 501 includes a servo motor 5011 arranged inside the U-shaped plate 403, and the output end of the servo motor 5011 is connected to a transmission rod 5012, and the end of the transmission rod 5012 is connected to an adjustment rod 5013 that penetrates the arc groove 408, and the adjustment rod 5013 penetrates the bottom of the limiting part 502, and the limiting part 502 is provided at the bottom of the vehicle carrier 401. A rotating rod 5014 is provided on the bottom of the position portion 502 away from the side of the adjusting rod 5013, and threads 5015 are symmetrically provided on the outer walls of the two ends of the rotating rod 5014 in opposite directions. A gear 5016 is sleeved on the middle of the rotating rod 5014, and a gear 5017 is meshed with the bottom of the gear 5016. A rotating rod 5018 is provided on the middle of the gear 5017, and fixed seats 5019 are connected to the two ends of the rotating rod 5018. A side wall of one end of one of the fixed seats 5019 is provided with a screw thread 5015. There is a servo motor 3 50110 connected to the rotating rod 2 5018, the limiting part 502 includes a moving seat 5021 sleeved on the outer wall of the circumference of the adjusting rod 5013 and the rotating rod 1 5014, a placement box 5022 is arranged on the top of the moving seat 5021, a placement cavity 5023 is opened inside the placement box 5022, a servo motor 4 5024 is penetrated through the side wall of one end of the placement box 5022, the output end of the servo motor 4 5024 is connected to the rotating rod 3 5025, and the outer walls of both ends of the rotating rod 3 5025 are symmetrically opened with direction The opposite threads 5026 and the rotating rod 3 5025 are symmetrically sleeved with sliders 5027 on the circumferential outer walls at both ends, and the tops of the sliders 5027 are provided with fixing clips 5028. The top of the placement box 5022 is provided with a groove 5029 that matches the fixing clip 5028. Under the action of the limiting component 5, it can adapt to the fixing work of vehicles with different wheelbases and wheels of different sizes, avoid vehicle deviation during the moving process, and cause safety hazards, thereby improving the safety and applicability of the elevator-type intelligent three-dimensional parking garage.

[0034] The specific working principle of the limiting assembly 5 is as follows: when a vehicle passes through one end of the vehicle carrier 401 and enters the vehicle carrier plate 406, the servo motor 3 50110 is started to drive the gear 2 5017 to rotate, and under the meshing action of the gear 2 5017 and the gear 1 5016, the gear 1 5016 drives the rotating rod 1 5014 to rotate, and under the cooperation of the thread 1 5015 and the threaded hole 1, the two limiting parts 502 are driven to move synchronously, so as to adapt to the fixing work of vehicles with different wheelbases, and the servo motor 2 5011 is started to drive the transmission rod 5012 When the vehicle is rotated, the transmission rod 5012 drives the adjusting rod 5013 to make an arc motion along the inside of the arc groove 408. Under the action of the adjusting rod 5013, the limiting part 502 is driven to adjust the angle to avoid affecting the horizontal movement of the vehicle. At the same time, under the action of the limiting part 502, the servo motor four 5024 is started to drive the rotating rod three 5025 to rotate. Under the cooperation of the thread two 5026 and the threaded hole two, the two sliders 5027 drive the fixing clamps 5028 to move synchronously, so as to adapt to the fixing work of wheels of different sizes, and the adaptability is wider.

[0035] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0036] In actual application, the vehicle is first driven into the vehicle moving assembly 4, and the limit assembly 5 is started through the displacement sensor control panel 9 to fix the vehicle tires. After the driver gets off the vehicle, he selects an empty parking space through the control panel 9, and then starts the servo motor 2 to drive the threaded rod 3 to rotate, and the vehicle moving assembly 4 matched with the outer wall of the circumference of the threaded rod 3 is raised and lowered. When the vehicle arrives at the designated parking space, the control panel 9 starts the limit assembly 5 again to release the fixation of the wheels, and then starts the hydraulic cylinder 405 to drive the vehicle loading plate 406 to extend, and transfer the vehicle to the placement plate 6 to complete the parking of the vehicle.

[0037] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An elevator-type intelligent three-dimensional parking garage, comprising a three-dimensional parking garage (1), characterized in that: A servo motor (2) is symmetrically arranged at one end of the top of the three-dimensional parking garage (1); the output end of the servo motor (2) passes through the top of the three-dimensional parking garage (1) and is connected to a threaded rod (3); the circumferential outer wall of the threaded rod (3) is connected to a vehicle moving assembly (4); a limiting assembly (5) is arranged on one side of the bottom of the vehicle moving assembly (4); a plurality of placement plates (6) are symmetrically arranged inside the three-dimensional parking garage (1); a plurality of displacement sensors (7) matched with the placement plates (6) are arranged on the inner side walls of the three-dimensional parking garage (1); a T-shaped limiting sliding groove (8) matched with the vehicle moving assembly (4) is symmetrically opened on the side wall at one end of the three-dimensional parking garage (1); a control panel (9) is arranged on one side wall of the three-dimensional parking garage (1); and a plurality of tooth grooves (10) are opened on the top of the placement plates (6); The vehicle moving assembly (4) comprises a vehicle carrier (401) arranged outside the circumference of the threaded rod (3); a T-shaped limit strip (402) matching the T-shaped limit slide groove (8) is symmetrically arranged on a side wall at one end of the vehicle carrier (401); a U-shaped plate (403) is arranged on a side wall at the other end of the vehicle carrier (401); and a fixing plate (404) is symmetrically arranged on a side of the side wall at the other end of the vehicle carrier (401) away from the U-shaped plate (403). ), a hydraulic cylinder (405) is arranged at the top of the fixing plate (404), the output end of the hydraulic cylinder (405) passes through the side wall of one end of the vehicle carrier (401) and is connected to a vehicle carrier plate (406), both sides of the vehicle carrier plate (406) are provided with tooth grooves (407) matching with the tooth grooves (10), and the inner walls at the bottom of both ends of the vehicle carrier (401) are provided with arc grooves (408) matching with the limit assembly (5); The limiting assembly (5) comprises a driving part (501) arranged on one side inside the vehicle carrier (401), and limiting parts (502) are symmetrically sleeved on the outside of the two ends of the circumference of the driving part (501); The driving part (501) comprises a second servo motor (5011) arranged inside the U-shaped plate (403); the output end of the second servo motor (5011) is connected to a transmission rod (5012); the end of the transmission rod (5012) is connected to an adjustment rod (5013) that passes through the arc-shaped groove (408); and the adjustment rod (5013) passes through the bottom of the limiting part (502); A rotating rod 1 (5014) is provided through the bottom of the limiting portion (502) on a side away from the adjusting rod (5013), and threads 1 (5015) in opposite directions are symmetrically provided on the outer walls of the two ends of the rotating rod 1 (5014), and a gear 1 (5016) is sleeved on the middle of the rotating rod 1 (5014), and a gear 2 (5017) is meshed with the bottom of the gear 1 (5016), and a rotating rod 2 (5018) is provided through the middle of the gear 2 (5017), and fixed seats (5019) are connected to the two ends of the rotating rod 2 (5018), and a servo motor 3 (50110) connected to the rotating rod 2 (5018) is provided through the side wall of one end of one of the fixed seats (5019); The limiting part (502) comprises a movable seat (5021) sleeved on the outer circumferential wall of the adjusting rod (5013) and the rotating rod (5014); a placement box (5022) is arranged at the top of the movable seat (5021); a placement cavity (5023) is provided inside the placement box (5022); a servo motor (5024) is penetrated through the side wall of one end of the placement box (5022); The output end of the servo motor four (5024) is connected to the rotating rod three (5025), and the outer walls at both ends of the rotating rod three (5025) are symmetrically provided with threads two (5026) in opposite directions. The outer walls at both ends of the rotating rod three (5025) are symmetrically sleeved with sliders (5027), and the top of the sliders (5027) are provided with fixing clips (5028). The top of the placement box (5022) is provided with a groove (5029) that matches the fixing clip (5028).

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