A flow channel blocking and lifting device based on the linkage of cylinder and stop block

The flow channel blocking and lifting device, which links the cylinder and the stop block, solves the problems of accurate positioning and stability of the flow channel blocking mechanism in high-speed material transmission, realizes the rapid blocking, positioning and detachment of the carrier, and improves the stability and reliability of the flow channel blocking mechanism.

CN224429119UActive Publication Date: 2026-06-30苏州旗开得电子科技有限公司

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
苏州旗开得电子科技有限公司
Filing Date
2025-06-24
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing flow channel blocking mechanisms struggle to achieve precise positioning and stable blocking when handling high-speed items, especially those with high inertia. Furthermore, the seals wear down after prolonged use, affecting the mechanism's stability and reliability.

Method used

The flow channel blocking and lifting device, which uses cylinders and stop blocks in conjunction, achieves precise blocking, positioning and release of the vehicle through the cooperation of the stop mechanism, blocking mechanism and lifting mechanism. It uses hydraulic buffer and return spring to provide stable clamping force, and combines pneumatic slide to achieve lifting and resetting of the vehicle.

Benefits of technology

During high-speed transmission in the flow channel, it enables rapid and precise blocking and positioning of the carrier. The structure is compact and reasonable, and the operation is stable and reliable. It avoids the limitations of blocking with a single cylinder and improves the blocking success rate and service life of the mechanism.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to a flow channel blocking and lifting device based on the linkage of a cylinder and a stop block, installed in a flow channel for conveying a carrier; it includes a stop mechanism positioned rearward and a blocking mechanism positioned forward according to the flow channel conveying direction; a lifting mechanism is provided between the stop mechanism and the blocking mechanism; the stop mechanism includes a stop mounting block and a stop block hinged to the stop mounting block; the stop block allows the carrier to move forward and prevents the carrier from moving backward; the blocking mechanism includes a stop block and a blocking lifting mechanism for driving the stop block to rise and fall; the stop block is used to block the carrier after being raised, and the stop block cooperates with the stop block to clamp and position the carrier; the lifting mechanism is used to position the carrier and lift the carrier out of the flow channel. This utility model can quickly and accurately and stably block the carrier during high-speed flow channel transmission, realizing the entire process of carrier transmission, stopping, lifting and positioning, and resetting; the structure is compact and reasonable, and the operation is stable and reliable.
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Description

Technical Field

[0001] This utility model relates to the field of assembly line equipment, and in particular to a flow channel blocking and lifting device based on the linkage between a cylinder and a stop block. Background Technology

[0002] In automated production lines, flow channels, as important channels for the transfer of goods, often need to be blocked, positioned, or temporarily stored to meet the needs of subsequent processing, inspection, and other procedures.

[0003] Most existing blocking mechanisms have relatively simple structures, typically employing only a single blocking method, such as using only a cylinder. This single blocking method has certain limitations in practical applications. When an item moves rapidly in the flow channel, a single cylinder may not provide sufficient blocking force, resulting in poor blocking effect. The item is prone to sliding or shifting, making precise positioning impossible. When dealing with items with high inertia, it is difficult to quickly and stably bring them to a stop, easily causing the item to bounce or shift. Moreover, after prolonged use, the cylinder seals are prone to wear, affecting the stability and reliability of the blocking mechanism.

[0004] In automated production lines, flow channel blocking mechanisms are mainly used for material positioning, diversion, and temporary storage. Currently, common blocking solutions in the industry have the following limitations:

[0005] 1. Pure cylinder blocking mechanism: The blocking rod is driven to rise and fall vertically by a single cylinder to directly intercept the material; its disadvantages are: large impact force, which can easily cause light or fragile materials to shift, tip over or be damaged; this mechanism can only block in the vertical direction and cannot prevent the material from sliding laterally (such as the rolling of cylindrical workpieces).

[0006] 2. Fixed mechanical stop block: This type of block uses rigid blocks, pins, or baffles inserted into the side wall of the flow channel to prevent material movement. Its disadvantages are: it is only suitable for materials of a fixed height and cannot adapt to the diversion requirements of workpieces of different thicknesses; the rigid contact of this mechanism is prone to wear on the material surface (such as scratches on packaging boxes), and the stop block needs to be replaced frequently after long-term use.

[0007] 3. Electric linear actuator + sensor control: This method uses a servo motor or linear module to drive the blocking mechanism, and coordinates with photoelectric sensors for positioning. Its disadvantages are: high cost, complex structure, and unsuitability for high-speed or low-cost production lines. This mechanism still lacks a buffer mechanism and cannot effectively solve the problem of impact and vibration.

[0008] Existing barrier mechanisms are difficult to operate efficiently and stably during the temporary storage and transfer of goods, and cannot adequately meet the requirements of high efficiency and precision in modern automated production.

[0009] Therefore, there is an urgent need to develop a flow channel blocking and lifting device that can achieve efficient linkage between the cylinder and the stop block, so as to improve the accuracy and stability of the control of the item. Utility Model Content

[0010] To solve the above-mentioned technical problems, this utility model provides a flow channel blocking and lifting device based on the linkage of cylinder and stop block, which can quickly and accurately block the carrier during high-speed flow channel transmission, realize the whole process of carrier transmission, blocking, lifting and positioning, and resetting; the structure is compact and reasonable, and the operation is stable and reliable.

[0011] The technical solution adopted by this utility model to solve its technical problem is: a flow channel blocking and lifting device based on the linkage of a cylinder and a stop block, installed in a flow channel for conveying a carrier; including a stop mechanism arranged rearward and a blocking mechanism arranged forward according to the flow channel conveying direction; a lifting mechanism is provided between the stop mechanism and the blocking mechanism; the stop mechanism includes a stop mounting block and a stop block hinged to the stop mounting block; the stop block is used to allow the carrier to move forward during the carrier conveying process and to prevent the carrier from moving backward; the blocking mechanism includes a blocking block and a blocking lifting mechanism for driving the blocking block to rise and fall; the blocking block is used to block the carrier after it is raised, and the blocking block cooperates with the stop block to clamp and position the carrier; the lifting mechanism is used to position the carrier and to lift the carrier out of the flow channel.

[0012] Furthermore, the stopping mechanism also includes a stopping bracket; the stopping mounting block is fixedly installed on the top side of the stopping bracket; a stopping mounting groove is provided on the top side of the stopping mounting block; the stopping block includes a stopping limiting arm; the stopping limiting arm is hinged to the stopping mounting block in the stopping mounting groove; the bottom surface of the stopping limiting arm is limited to the bottom of the stopping mounting groove; the front end of the stopping limiting arm extends obliquely upward to form a stopping flip arm; a return spring is also provided between the stopping flip arm and the bottom of the stopping mounting groove; the stopping flip arm cooperates with the carrier, and is used to flip downward and compress the return spring under the pressure of the carrier when the carrier is transported forward, so that the carrier passes through the stopping mechanism; it is also used to flip upward and return to its original position after the carrier has passed, using the return spring's reset action, and using the limiting cooperation between the stopping limiting arm and the stopping mounting groove to maintain the upward flip angle and prevent the carrier from moving backward.

[0013] Furthermore, the blocking mechanism also includes a swing arm and a blocking lifting frame; the swing arm is hinged to the top rear of the blocking lifting frame in a region near the center; the blocking block is fixedly installed at the rear end of the swing arm, and a hydraulic buffer is installed at the front of the top of the blocking lifting frame; the bottom front of the swing arm cooperates with the hydraulic buffer; the hydraulic buffer is used to provide a clamping force for the blocking block and the stop block.

[0014] Furthermore, a rubber-coated roller is installed on the top side of the blocking block, and the blocking block contacts the front end face of the carrier through the rubber-coated roller.

[0015] Furthermore, a limit torsion spring is installed between the bottom rear position of the swing arm and the blocking lifting frame to keep the blocking block tilted backward and upward, preventing the blocking block from flipping backward and downward.

[0016] Furthermore, the blocking mechanism also includes a blocking bracket; the blocking lifting mechanism includes a blocking lifting cylinder installed on the front side of the blocking bracket; the bottom side of the lifting end of the blocking lifting cylinder is fixedly installed with the bottom side of the blocking lifting frame; the blocking lifting frame is installed on the rear side of the blocking bracket via a slide rail slider assembly.

[0017] Furthermore, the lifting mechanism includes a lifting platform, a lifting bracket, and a pneumatic slide mounted on the lifting bracket for driving the lifting platform to move up and down; the top surface of the lifting platform has a positioning pin for positioning the carrier; the pneumatic slide is used to drive the lifting platform to move up and down, so that the carrier is raised and removed from the flow channel, or so that the carrier is lowered and placed on the flow channel.

[0018] Furthermore, the top surface of the lifting platform is also provided with several buffer pads.

[0019] Furthermore, multiple upper limit components are provided on the left and right sides of the flow channel in the areas corresponding to the lifting mechanism; the upper limit components include a lifting limit bracket and a lifting limit plate fixedly installed on the top side of the lifting limit bracket; the lifting limit plate corresponds to the left and right edges of the vehicle and is used to limit the vehicle when the lifting mechanism lifts the vehicle.

[0020] The beneficial effects of this utility model are as follows: This utility model provides a flow channel blocking and lifting device based on the linkage of a cylinder and a stop block, which can quickly and accurately block the carrier during high-speed flow channel transmission, realizing the entire process of carrier transmission, blocking, lifting and positioning, and resetting; the structure is compact and reasonable, and the operation is stable and reliable. Attached Figure Description

[0021] Figure 1 A three-dimensional schematic diagram of a flow channel blocking and lifting device based on the linkage of a cylinder and a stop block, as an embodiment, installed in the flow channel;

[0022] Figure 2 A three-dimensional schematic diagram of a flow channel blocking and lifting device based on the linkage of a cylinder and a stop block, as an embodiment;

[0023] Figure 3 A three-dimensional schematic diagram of the stop mechanism of a flow channel blocking and lifting device based on the linkage of a cylinder and a stop block, as an embodiment;

[0024] Figure 4A three-dimensional schematic diagram of the blocking mechanism of a flow channel blocking and lifting device based on the linkage of a cylinder and a stop block, as an embodiment;

[0025] Figure 5 This is a top view of a flow channel blocking and lifting device based on the linkage of a cylinder and a stop block, as an embodiment, installed on a clamping carrier in the flow channel.

[0026] Figure 6 for Figure 5 AA sectional view;

[0027] Figure 7 for Figure 5 BB cross-sectional diagram;

[0028] Figure 8 A BB cross-sectional view of a flow channel blocking and lifting device based on the linkage of a cylinder and a stop block, as an embodiment, installed on a lifting carrier in the flow channel.

[0029] Among them, 1-flow channel, 2-stopping mechanism, 3-blocking mechanism, 4-lifting mechanism, 5-upper limit assembly, 6-carrier, 21-stopping mounting block, 22-stopping block, 23-reset spring, 24-stopping bracket, 211-stopping mounting groove, 221-stopping limit arm, 222-stopping flipping arm, 31-blocking block, 32-swing arm, 33-blocking lifting frame, 34-hydraulic buffer, 35-limiting torsion spring, 36-blocking bracket, 37-blocking lifting cylinder, 38-slide rail slider assembly, 311-rubber-coated roller, 41-lifting platform, 42-pneumatic slide, 43-lifting bracket, 411-positioning pin, 412-buffer pad, 51-lifting limit plate, 52-lifting limit bracket. Detailed Implementation

[0030] To enhance understanding of this utility model, it will be described in further detail below with reference to the accompanying drawings and embodiments. These embodiments are only used to explain this utility model and do not limit the scope of protection of this utility model.

[0031] Example

[0032] Please refer to Figures 1 to 8As shown, this embodiment provides a flow channel blocking and lifting device based on the linkage of a cylinder and a stop block, installed in the flow channel 1 for conveying a carrier 6; it includes a stop mechanism 2 arranged rearward and a blocking mechanism 3 arranged forward according to the flow channel conveying direction; a lifting mechanism 4 is provided between the stop mechanism 2 and the blocking mechanism 3; the stop mechanism 2 includes a stop mounting block 21 and a stop block 22 hinged to the stop mounting block 21; the stop block 22 is used to allow the carrier 6 to move forward when it is being conveyed, and to prevent the carrier 6 from moving backward; the blocking mechanism 3 includes a blocking block 31 and a blocking lifting mechanism for driving the blocking block 31 to rise and fall; the blocking block 31 is used to block the carrier 6 after it is raised, and the blocking block 31 cooperates with the stop block 22 to clamp and position the carrier 6; the lifting mechanism 4 is used to position the carrier 6 and to lift the carrier 6 out of the flow channel 1. In this embodiment, the flow channel consists of two parallel side plates. Each side plate is provided with a synchronously operating conveying mechanism in the opposite direction. The left and right sides of the carrier are conveyed by the two synchronously operating conveying mechanisms. The corresponding stop mechanism 2, blocking mechanism 3 and lifting mechanism 4 are arranged in the area between the two conveying mechanisms.

[0033] Refer to Figure 2 , Figure 3 and Figure 6 As shown, the stopping mechanism 2 further includes a stopping bracket 24; the stopping mounting block 21 is fixedly installed on the top side of the stopping bracket 24; the top side of the stopping mounting block 21 is provided with a stopping mounting groove 211; the stopping block 22 includes a stopping limiting arm 221; the stopping limiting arm 221 is hinged to the stopping mounting block 21 within the stopping mounting groove 211; the bottom surface of the stopping limiting arm 221 is limited and engaged with the bottom of the stopping mounting groove 211; the front end of the stopping limiting arm 221 extends obliquely upward to form a stopping flip arm 222; the stopping flip arm... A return spring 23 is also provided between the bottom of the stop mounting groove 211 and the stop tilting arm 222; the stop tilting arm 222 cooperates with the carrier 6 and is used to tilt the stop tilting arm 222 downward and compress the return spring 23 when the carrier 6 is conveyed forward, so that the carrier 6 passes through the stop mechanism 2. It is also used to tilt the stop tilting arm 222 upward and reset it after the carrier 6 has passed by, using the reset action of the return spring 23. The stop limiting arm 221 cooperates with the stop mounting groove 211 to maintain the upward tilting angle and prevent the carrier 6 from moving backward.

[0034] Refer to Figure 2 , Figure 4 and Figure 6As shown, the blocking mechanism 3 also includes a swing arm 32 and a blocking lifting frame 33; the swing arm 32 is hinged to the top rear of the blocking lifting frame 33 in the area near the middle; the blocking block 31 is fixedly installed at the rear end of the swing arm 32, and a hydraulic buffer 34 is installed at the front of the top of the blocking lifting frame 33; the bottom front of the swing arm 32 cooperates with the hydraulic buffer 34; the hydraulic buffer 34 is used to provide a clamping force for the blocking block 31 and the stop block 22 to hold the carrier 6.

[0035] Refer to Figure 4 As shown, a rubber-coated roller 311 is installed on the top side of the blocking block 31, and the blocking block 31 contacts the front end face of the carrier 6 through the rubber-coated roller 311.

[0036] Refer to Figure 6 As shown, a limit torsion spring 35 is also installed between the bottom rear position of the swing arm 32 and the blocking lifting frame 33 to keep the blocking block 31 tilted backward and upward, and to prevent the blocking block 31 from flipping backward and downward.

[0037] Refer to Figure 4 and Figure 6 As shown, the blocking mechanism 3 further includes a blocking bracket 36; the blocking lifting mechanism includes a blocking lifting cylinder 37 installed on the front side of the blocking bracket 36; the bottom side of the lifting end of the blocking lifting cylinder 37 is fixedly installed on the bottom side of the blocking lifting frame 33; the blocking lifting frame 33 is installed on the rear side of the blocking bracket 36 through a slide rail slider assembly 38.

[0038] Refer to Figure 2 As shown, the lifting mechanism 4 includes a lifting platform 41, a lifting bracket 43, and a pneumatic slide 42 mounted on the lifting bracket 43 for driving the lifting platform 41 to rise and fall; the top surface of the lifting platform 41 has a positioning pin 411 for positioning the carrier; the pneumatic slide 42 is used to drive the lifting platform 41 to rise and fall, so that the carrier 6 is raised and removed from the flow channel 1, or the carrier 6 is lowered and placed on the flow channel 1.

[0039] Refer to Figure 2 As shown, the top surface of the lifting platform 41 is also provided with several buffer pads 412; the design of the buffer pads can effectively protect the vehicle and reduce the impact of the lifting platform on the vehicle.

[0040] Refer to Figure 1 , Figure 7 and Figure 8As shown, multiple upper limit components 5 are also provided on the left and right sides of the flow channel 1 in the areas corresponding to the lifting mechanism 4; the upper limit component 5 includes a lifting limit bracket 52 and a lifting limit plate 51 fixedly installed on the top side of the lifting limit bracket 52; the lifting limit plate 51 corresponds to the left and right edges of the carrier 6 and is used to limit the carrier 6 when the lifting mechanism 4 lifts the carrier 6.

[0041] This embodiment describes a flow channel blocking and lifting device based on the linkage of a cylinder and a stop block, installed in flow channel 1. A carrier plate is conveyed forward in the flow channel. When passing the stop mechanism, the carrier plate presses against the stop block's stop-turning arm, causing it to flip downwards and compress the return spring. After the carrier plate has completely passed the stop-turning arm, the stop-turning arm is no longer pressed by the carrier plate, the return spring is released, and the stop-turning arm flips upwards and remains in its initial position due to the limiting engagement between the stop limit arm and the stop mounting groove. The front end of the stop-turning arm forms the rear clamping end of the carrier plate. When the carrier plate is nearly completely passed by the stop-turning arm, its front end also contacts the rubber-coated roller of the raised stop block, using the inertia of forward conveying to cause the swing arm to flip and press against the hydraulic buffer. After the carrier plate has completely passed the stop-turning arm, the hydraulic buffer releases, overcoming... The conveying force of the flow channel causes the tray to move slightly backward, so that the rear end face of the tray is pressed against the stop tilting arm. At the same time, the hydraulic damper is not fully released, providing the force for the blocking block and the stop block to clamp the tray. Under the stopping action of the stop block, the tray achieves initial positioning. Then, the lifting mechanism rises and performs secondary positioning of the tray through the positioning pin on the lifting platform. The lifting platform continues to rise until the upper surface of the tray on the left and right sides contacts the lower end face of the lifting limit plate, thus completing the separation of the carrier from the flow channel. When the carrier needs to re-enter the flow channel, the blocking block of the blocking mechanism lowers below the conveying surface of the flow channel, and the lifting platform lowers with the carrier, so that the carrier is placed back on the conveying surface of the flow channel. The lifting platform continues to descend until it is completely separated from the carrier, and the carrier continues to be conveyed with the flow channel.

[0042] In this embodiment, a blocking lifting cylinder and a stop block are used in linkage. When the blocking cylinder drives the blocking block to block the carrier, the rear side of the carrier also squeezes the stop block at the same time. Through the action of the hydraulic buffer, the stop block and the blocking block form a stable clamping and positioning structure. Compared with a single cylinder blocking structure, the blocking success rate can be significantly improved, effectively avoiding production interruptions caused by blocking failure. At the same time, by adjusting the elastic coefficient of the return spring, the force between the stop tilting arm and the carrier can be appropriately adjusted, thereby controlling the friction between the carrier and the stop tilting arm when the carrier passes through the stop tilting arm, avoiding damage to components due to excessive friction, and overcoming the limitations of the independent stop block structure.

[0043] The above embodiments should not limit the present invention in any way. All technical solutions obtained by equivalent substitution or equivalent conversion fall within the protection scope of the present invention.

Claims

1. A flow passage blocking jacking device based on linkage of a cylinder and a stopper block, installed in a flow passage (1) for conveying a carrier (6); characterized in that: It includes a stop mechanism (2) arranged rearward along the flow channel conveying direction and a blocking mechanism (3) arranged forward; a lifting mechanism (4) is provided between the stop mechanism (2) and the blocking mechanism (3); the stop mechanism (2) includes a stop mounting block (21) and a stop block (22) hinged to the stop mounting block (21); the stop block (22) is used to allow the carrier (6) to move forward when the carrier (6) is being conveyed, and to prevent the carrier (6) from moving backward; the blocking mechanism (3) includes a blocking block (31) and a blocking lifting mechanism for driving the blocking block (31) to rise and fall; The blocking block (31) is used to block the vehicle (6) after it is raised. The blocking block (31) cooperates with the stop block (22) to clamp the vehicle (6) and position it. The lifting mechanism (4) is used to position the vehicle (6) and lift it to remove the vehicle (6) from the flow channel (1).

2. The flow passage blocking jacking device based on linkage of cylinder and stopper block according to claim 1, characterized in that: The stopping mechanism (2) further includes a stopping bracket (24); the stopping mounting block (21) is fixedly installed on the top side of the stopping bracket (24); the top side of the stopping mounting block (21) is provided with a stopping mounting groove (211); the stopping block (22) includes a stopping limiting arm (221); the stopping limiting arm (221) is hinged to the stopping mounting block (21) in the stopping mounting groove (211); the bottom surface of the stopping limiting arm (221) is limited and engaged with the bottom of the stopping mounting groove (211); the front end of the stopping limiting arm (221) extends obliquely upward to form a stopping flip arm (222); the stopping flip arm (222) A return spring (23) is also provided between the bottom of the stop mounting groove (211) and the stop tilting arm (222). The stop tilting arm (222) cooperates with the carrier (6) and is used to tilt the stop tilting arm (222) downward and compress the return spring (23) when the carrier (6) is conveyed forward, so that the carrier (6) passes through the stop mechanism (2). It is also used to tilt the stop tilting arm (222) upward and reset it after the carrier (6) passes by, using the reset action of the return spring (23). The stop limiting arm (221) and the stop mounting groove (211) limit the angle of upward tilting and prevent the carrier (6) from moving backward.

3. The cylinder and stopper linkage based flow passage blocking jacking device according to claim 1, wherein: The blocking mechanism (3) further includes a swing arm (32) and a blocking lifting frame (33); the swing arm (32) is hinged to the top rear of the blocking lifting frame (33) in the area near the middle; the blocking block (31) is fixedly installed at the rear end of the swing arm (32); a hydraulic buffer (34) is installed at the front of the top of the blocking lifting frame (33); the bottom front of the swing arm (32) cooperates with the hydraulic buffer (34); the hydraulic buffer (34) is used to provide the force for clamping the carrier (6) to the blocking block (31) and the stop block (22).

4. The flow channel blocking and lifting device based on the linkage of a cylinder and a stop block according to claim 3, characterized in that: The top side of the blocking block (31) is equipped with a rubber-coated roller (311), and the blocking block (31) contacts the front end face of the carrier (6) through the rubber-coated roller (311).

5. A flow channel blocking and lifting device based on the linkage of a cylinder and a stop block according to claim 3, characterized in that: A limit torsion spring (35) is also installed between the bottom rear position of the swing arm (32) and the blocking lifting frame (33) to keep the blocking block (31) tilted backward and upward, and to prevent the blocking block (31) from flipping backward and downward.

6. A flow channel blocking and lifting device based on the linkage of a cylinder and a stop block according to any one of claims 3-5, characterized in that: The blocking mechanism (3) further includes a blocking bracket (36); the blocking lifting mechanism includes a blocking lifting cylinder (37) installed on the front side of the blocking bracket (36); the bottom side of the lifting end of the blocking lifting cylinder (37) is fixedly installed with the bottom side of the blocking lifting frame (33); the blocking lifting frame (33) is installed on the rear side of the blocking bracket (36) through a slide rail slider assembly (38).

7. The flow channel blocking and lifting device based on the linkage of a cylinder and a stop block according to claim 1, characterized in that: The lifting mechanism (4) includes a lifting platform (41), a lifting bracket (43), and a pneumatic slide (42) mounted on the lifting bracket (43) and used to drive the lifting platform (41) to lift. The top surface of the lifting platform (41) has a positioning pin (411) for positioning the carrier. The pneumatic slide (42) is used to drive the lifting platform (41) to lift, so that the carrier (6) is raised and removed from the flow channel (1), or so that the carrier (6) is lowered and placed on the flow channel (1).

8. A flow channel blocking and lifting device based on the linkage of a cylinder and a stop block according to claim 7, characterized in that: The top surface of the lifting platform (41) is also provided with several buffer pads (412).

9. A flow channel blocking and lifting device based on the linkage of a cylinder and a stop block according to claim 1, 7 or 8, characterized in that: Multiple upper limit components (5) are provided on the left and right sides of the flow channel (1) in the area corresponding to the lifting mechanism (4); the upper limit component (5) includes a lifting limit bracket (52) and a lifting limit plate (51) fixedly installed on the top side of the lifting limit bracket (52); the lifting limit plate (51) corresponds to the left and right edges of the vehicle (6) and is used to limit the vehicle (6) when the lifting mechanism (4) lifts the vehicle (6).