Elevator supporting plate machining table

Abstract

The utility model discloses an elevator supporting plate processing table, which relates to the technical field of elevator manufacturing, and comprises side supporting plates, a plurality of groups of cutting devices, a plurality of groups of side supporting plates, a plurality of groups of crawler belts, a plurality of groups of supporting mechanisms, a plurality of transport vehicles and a plurality of bearing mechanisms, the side supporting plates are longitudinally provided with the crawler belts, and the cutting devices are arranged above the side supporting plates. The supporting mechanism comprises a supporting plate, the multiple sets of side supporting plates and the crawler belts are symmetrically arranged on the two sides of the supporting plate respectively, the crawler belts are fixedly connected with the supporting plate, and a driving mechanism is arranged at the bottom of the supporting plate; the carrier vehicle is arranged on one side of the supporting plate, the multiple sets of bearing mechanisms are arranged in the carrier vehicle in parallel at equal intervals in the longitudinal direction, and one side of the carrier vehicle is provided with an opening. In the implementation process, manpower consumption is low, a plurality of metal plates are stored in the transport cart, feeding and discharging are easy and fast, and therefore the overall cutting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator manufacturing, and particularly relates to a processing table for an elevator support plate. Background Art

[0002] Elevator manufacturing refers to the process of producing elevators and their related equipment, including designing, researching, developing, assembling, testing, and installing elevator systems. An elevator is a vertical transportation device used to vertically or obliquely transport people and goods inside or outside a building. The elevator floor is usually not a single piece of metal plate, but consists of main beams and multiple groups of metal plates to facilitate the assembly of elevator support plates of corresponding sizes. Generally, during the process of processing the support plate of an elevator, the whole metal plate needs to be cut, and it is necessary to ensure that the sizes of each cut plate are the same.

[0003] During the process of cutting the metal plate, since the volume and weight of the metal plate to be cut are relatively large, generally, the metal plate is placed on the cutting table by hanging or other handling devices. After cutting is completed, it is taken out piece by piece by a mechanical clamping device or manually through a material taking tool, resulting in a relatively long time-consuming for overall loading and unloading and low efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide a processing table for an elevator support plate to solve the technical problem of low efficiency in loading and unloading in the prior art.

[0005] The technical problem to be solved by the utility model can be realized through the following technical solutions:

[0006] A processing table for an elevator support plate includes side support plates and a cutting device. A crawler is longitudinally installed on the side support plates. There are multiple groups of side support plates and crawlers. The cutting device is arranged above the side support plates. The device further includes a support mechanism, a transport vehicle, and a bearing mechanism. The support mechanism includes a support plate. Multiple groups of side support plates and crawlers are symmetrically arranged on both sides of the support plate respectively. The crawler is fixedly arranged with the support plate. A driving mechanism is arranged at the bottom of the support plate. The transport vehicle is arranged on one side of the support plate. There are multiple groups of bearing mechanisms. Multiple groups of bearing mechanisms are longitudinally arranged in parallel at equal intervals inside the transport vehicle. The side of the transport vehicle close to the crawler is open. Each group of bearing mechanisms includes a partition plate. Multiple groups of connecting columns are symmetrically and fixedly connected to both sides of each group of partition plates. One end of each group of connecting columns away from the partition plate is fixedly connected to the inner wall of the transport vehicle. Transmission components that cooperate with the driving mechanism are arranged on both sides of each group of partition plates.

[0007] As a further solution of the utility model: The driving mechanism includes a transmission wheel and a first conveyor belt. A plurality of groups of the transmission wheels are provided and symmetrically rotatably connected to both sides of the support plate. A transmission shaft is fixedly connected between each corresponding two groups of the transmission wheels on both sides. An intermediate wheel is fixedly connected to the middle of each transmission shaft. The support plate is rotatably connected with a plurality of groups of first pulleys. A first conveyor belt is cooperatively arranged between each group of the first pulleys. The bottom of each intermediate wheel is in contact with the first conveyor belt. The first pulley is cooperatively matched with the intermediate wheel. A driving component is arranged at the bottom of the first conveyor belt.

[0008] As a further solution of the utility model: The driving component includes a servo motor fixedly connected to the bottom of the support plate. A driving wheel is fixedly connected to the output end of the servo motor. The side of the driving wheel is in contact with the first conveyor belt.

[0009] As a further solution of the utility model: The transmission component includes a plurality of groups of second pulleys. Each group of the second pulleys is coaxially rotatably cooperatively arranged on the corresponding connecting posts. Two sides of one end of the support plate close to the transport vehicle are provided with first docking gears. The first docking gears are coaxially fixedly connected to the corresponding transmission wheels. Two sides of one end of the partition plate close to the support plate are rotatably connected with second docking gears that are cooperatively matched with the first docking gears. Two sides of the partition plate close to one end of the second docking gears are rotatably connected with third pulleys. A second transmission gear coaxially connected to the third pulley is rotatably connected to the side plate of the transport vehicle. The second transmission gear meshes with the corresponding second docking gear. A second conveyor belt is cooperatively arranged between each group of the third pulleys and the corresponding second pulleys.

[0010] As a further solution of the utility model: A plurality of groups of cutting openings are arranged on the support plate in parallel and at equal intervals.

[0011] As a further solution of the utility model: An installation block is arranged at the bottom of the transport vehicle. A limiting block cooperatively matched with the installation block is fixedly arranged on one side of the support plate.

[0012] The beneficial effects of the utility model:

[0013] 1. The utility model is provided with a transport vehicle. A plurality of groups of partition plates are arranged inside the transport vehicle. A metal plate to be processed can be placed on each partition plate. During feeding, the support plate is moved to a position flush with the corresponding partition plate through a crawler. The transport vehicle is pushed to dock the second docking gear on the partition plate with the first docking gear, thereby realizing the transmission effect between the two. During the transmission process, the device can automatically transport the metal plate to directly above the support plate, thereby realizing the feeding operation. The discharging process is opposite to the feeding process. The consumption of human labor is less during the whole process. A plurality of metal plates are stored inside the transport vehicle. The loading and unloading are simple and fast, thereby improving the overall cutting efficiency.

[0014] 2. The utility model is provided with multiple groups of driving wheels between adjacent two groups of cutting openings. The driving wheels can automatically drive the displacement of the metal plate as needed, control the relative position between the metal plate and the cutting device during the feeding process, and ensure that the cut metal plates can be smoothly transported back into the transport vehicle during the discharging process. While reducing the consumption of manpower, it can also ensure the stability during the feeding and discharging processes. Brief Description of the Drawings

[0015] The following further describes the present utility model with reference to the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the transport vehicle of the present utility model;

[0018] Figure 3 It is a schematic diagram of the support mechanism of the present utility model;

[0019] Figure 4 It is a schematic diagram of the driving wheel structure of the present utility model;

[0020] Figure 5 It is a schematic diagram of the partial enlarged structure of the present utility model;

[0021] Figure 6 It is a schematic diagram of the longitudinal section of the transport vehicle of the present utility model.

[0022] In the figures: 1, side support plate; 2, cutting device; 3, support mechanism; 301, pallet; 302, driving wheel; 303, transmission shaft; 304, intermediate wheel; 305, first docking gear; 306, first conveyor belt; 307, servo motor; 308, driving wheel; 309, first pulley; 310, cutting opening; 4, crawler; 5, mounting block; 6, limiting block; 7, transport vehicle; 8, bearing mechanism; 801, second pulley; 802, partition plate; 803, second conveyor belt; 804, second transmission gear; 805, second docking gear; 806, connecting column; 807, third pulley. Detailed Embodiment

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Such as Figures 1 - 6As shown in the figure, an elevator support plate processing table includes side support plates 1 and a cutting device 2. A crawler 4 is longitudinally installed on the side support plates 1. The crawler 4 includes a power component and a transmission component. The power component is arranged on the side support plates 1, and the transmission component is arranged movably and longitudinally distributed on the side support plates 1. Multiple groups of side support plates 1 and crawlers 4 are provided. The cutting device 2 is arranged above the side support plates 1. The device further includes a support mechanism 3, a transport vehicle 7, and a bearing mechanism 8. The support mechanism 3 includes a support plate 301. Multiple groups of side support plates 1 and crawlers 4 are symmetrically arranged on both sides of the support plate 301 respectively. One side of the crawler 4 is fixedly arranged with the support plate 301, so that multiple groups of crawlers 4 can drive the support plate 301 to move up and down together. A driving mechanism is arranged at the bottom of the support plate 301; the transport vehicle 7 is arranged on one side of the support plate 301. Multiple groups of bearing mechanisms 8 are provided. Multiple groups of bearing mechanisms 8 are longitudinally arranged at equal intervals and parallel to each other inside the transport vehicle 7. The transport vehicle 7 is provided with an opening on the side close to the crawler 4 for easy loading and unloading. Each group of bearing mechanisms 8 includes a partition plate 802. Multiple groups of connecting columns 806 are symmetrically and fixedly connected to both sides of each group of partition plates 802. One end of each group of connecting columns 806 away from the partition plate 802 is fixedly connected to the inner wall of the transport vehicle 7. Transmission components that cooperate with the driving mechanism are arranged on both sides of each group of partition plates 802; the bearing of the metal plate is realized through the bearing mechanism 8, and the transportation of the metal plate is realized through the transport vehicle 7. When cutting is required, the support plate 301 is moved to a position flush with the corresponding bearing mechanism 8 through the crawler 4, ensuring that the bearing mechanism 8 bears a metal plate. The transport vehicle 7 is pushed to dock the transmission component on the bearing mechanism 8 with the driving mechanism on the support plate 301. The driving mechanism drives the transmission component to transport the metal plate directly above the support plate 301, and the support of the metal plate is realized through the transmission wheel 302 to complete the loading operation. After the metal plate is positioned, the transport vehicle 7 is pushed away, and then the support plate 301 is moved to the cutting area through the crawler 4, and the cutting of the metal plate is realized through the cutting device 2. The unloading process is the opposite of the loading process.

[0025] In some specific embodiments, in order to improve the stability of the metal plate during the implementation process, the driving mechanism includes a transmission wheel 302. There are multiple groups of transmission wheels 302, which are symmetrically and rotatably connected to both sides of the support plate 301. A transmission shaft 303 is fixedly connected between the corresponding two groups of transmission wheels 302 on both sides, facilitating the coaxial rotation of the two groups of transmission wheels 302. A middle wheel 304 is fixedly connected to the middle of each transmission shaft 303. The support plate 301 is rotatably connected with multiple groups of first belt wheels 309. A first conveyor belt 306 is cooperatively arranged between each group of first belt wheels 309. The bottom of each middle wheel 304 is in contact with the first conveyor belt 306. The first belt wheel 309 and the middle wheel 304 cooperate with each other, and the two maintain a state of mutual extrusion through the first conveyor belt 306, improving the friction between the middle wheel 304 and the first conveyor belt 306, thereby increasing the transmission effect. A driving component is arranged at the bottom of the first conveyor belt 306 to provide power for the driving mechanism; during the process of loading or unloading, the first conveyor belt 306 can be driven to drive the middle wheel 304 to rotate. The middle wheel 304 drives the transmission shaft 303 to rotate, and the transmission shaft 303 drives the transmission wheels 302 on both sides to rotate. The metal plate is driven to displace in a direction parallel to the support plate 301 through multiple transmission wheels 302, that is, the stable transportation of the metal plate is realized.

[0026] In some specific embodiments, in order to achieve the driving effect of the first conveyor belt 306, the driving component includes a servo motor 307 fixedly connected to the bottom of the support plate 301. The output end of the servo motor 307 is fixedly connected with a driving wheel 308, and the side of the driving wheel 308 is in contact with the first conveyor belt 306; during the process of driving the first conveyor belt 306, the servo motor 307 drives the driving wheel 308 to rotate, the driving wheel 308 drives the first conveyor belt 306 to move, and the movement of the first conveyor belt 306 will indirectly drive the transmission wheel 302 to rotate, thereby driving the metal plate to be loaded or unloaded, thus realizing the transfer of kinetic energy.

[0027] In some specific embodiments, in order to improve the efficiency of loading and unloading, the transmission assembly includes multiple sets of second pulleys 801. Each set of second pulleys 801 is coaxially rotatably engaged on the corresponding connection post 806. On both sides of the pallet 301 near one end of the transport vehicle 7, there are first docking gears 305. The first docking gears 305 are coaxially and fixedly connected to the corresponding drive wheels 302. On both sides of the partition plate 802 near one end of the pallet 301, there are second docking gears 805 rotatably connected and engaged with the first docking gears 305. On both sides of the partition plate 802 near one end of the second docking gears 805, there are third pulleys 807 rotatably connected. On the side plate of the transport vehicle 7, there is a second transmission gear 804 coaxially connected to the third pulley 807. The second transmission gear 804 meshes with the corresponding second docking gear 805. Between each set of third pulleys 807 and the corresponding second pulleys 801, there is a second conveyor belt 803 arranged in cooperation. The second pulleys 801 are responsible for supporting the second conveyor belt 803 and, at the same time, cooperate with the third pulleys 807 to achieve the transmission effect. The metal plate is placed above the loading and unloading mechanism 8. During loading, the crawler 4 drives the pallet 301 to be flush with the corresponding loading and unloading mechanism 8, and pushes the transport vehicle 7 towards the input end of the support mechanism 3, so that the first docking gear 305 at this end is docked and engaged with the second docking gear 805 of this loading and unloading mechanism 8. The first docking gear 305 will rotate under the action of the transmission shaft 303, thereby driving the second docking gear 805 to rotate. The second docking gear 805 drives the second transmission gear 804 to rotate. The second transmission gear 804 drives the third pulley 807 to rotate, thereby driving the second conveyor belt 803 to move. The second conveyor belt 803 drives multiple sets of second pulleys 801 at corresponding positions to rotate and drives the metal plate above the second conveyor belt 803 to move towards the pallet 301, thereby realizing the loading operation. During unloading, the pallet 301 is located at the cutting station. The crawler 4 drives the pallet 301 to move down until it is flush with the idle loading and unloading mechanism 8. Push the transport vehicle 7 so that the first docking gear 305 meshes with the second docking gear 805. The servo motor 307 drives the second conveyor belt 803 to move in the reverse direction, thereby driving the drive wheel 302 to move in the reverse direction, and then making the cut metal plate be pushed back above the loading and unloading mechanism 8 again, thereby realizing the unloading operation. It should be noted that only during the loading or unloading process of the support mechanism 3, the loading and unloading mechanism 8 and the support mechanism 3 are in a docking state, while in other operation processes, the loading and unloading mechanism 8 is outside the influence range of the support mechanism 3.

[0028] In some specific embodiments, in order to reduce the impact on the pallet 301 when the cutting device 2 cuts the metal plate, a plurality of sets of equally spaced and parallel cutting openings 310 are arranged on the pallet 301 at equal intervals in parallel, so as to ensure the stability of the metal plate during the blanking process after cutting; after the feeding is completed, the transport vehicle 7 is driven away from the pallet 301, and the pallet 301 is lifted to the implementation area of the cutting device 2 by a plurality of sets of crawlers 4. The cutting device 2 includes a downward pressing and fixing mechanism that can be lifted. The cutting device 2 cuts along the cutting openings 310. The cutting openings 310 can reduce the impact on the pallet 301 generated by the cutting device 2 during the cutting process and improve the service life of the pallet 301.

[0029] In some specific embodiments, during the docking process of the second docking gear 805 and the first docking gear 305, in order to prevent the kinetic energy of the second docking gear 805 from being too large and causing damage to the first docking gear 305, an installation block 5 is provided at the bottom of the transport vehicle 7, and a limiting block 6 that cooperates with the installation block 5 is fixedly provided on one side of the pallet 301. A universal wheel with a braking member is provided at the bottom of the transport vehicle 7; when the second docking gear 805 and the first docking gear 305 are docked and engaged with each other, the installation block 5 located at the bottom of the transport vehicle 7 will contact the limiting block 6, and the limiting block 6 will block the forward movement of the installation block 5 and the transport vehicle 7, thereby playing a limiting role on the installation block 5. The braking member provided at the bottom of the transport vehicle 7 facilitates the fixation of the transport vehicle 7 and prevents the second docking gear 805 and the first docking gear 305 from moving away from each other during the transmission process.

[0030] To facilitate the understanding of the embodiments of this solution by those skilled in the art, the working principle of the embodiments of this solution will be described below in combination with a specific application scenario:

[0031] The metal plate is carried by the carrying mechanism 8, and the metal plate is transported by the transport vehicle 7. When cutting is required, the pallet 301 is moved to a position flush with the corresponding carrying mechanism 8 through the crawlers 4, ensuring that the carrying mechanism 8 carries a metal plate. The transport vehicle 7 is pushed to dock the transmission component on the carrying mechanism 8 with the driving mechanism on the pallet 301. The driving mechanism drives the transmission component to transport the metal plate directly above the pallet 301. The metal plate is supported by the transmission wheel 302 to complete the feeding operation. After the metal plate is positioned, the transport vehicle 7 is pushed away, and then the pallet 301 is moved to the cutting area through the crawlers 4. The cutting device 2 is used to cut the metal plate. The blanking process is the opposite of the feeding process;

[0032] During the process of loading or unloading, the first conveyor belt 306 can be driven to drive the intermediate wheel 304 to rotate. The intermediate wheel 304 drives the transmission shaft 303 to rotate, and the transmission shaft 303 drives the transmission wheels 302 on both sides to rotate. The metal plate is driven to displace in a direction parallel to the pallet 301 through multiple transmission wheels 302, that is, the smooth transportation of the metal plate is realized. During the process of driving the first conveyor belt 306, the servo motor 307 drives the driving wheel 308 to rotate. The driving wheel 308 drives the first conveyor belt 306 to move. The movement of the first conveyor belt 306 will indirectly drive the transmission wheel 302 to rotate, and then drive the metal plate to be loaded or unloaded, thereby realizing the transmission of kinetic energy;

[0033] The metal plate is placed above the loading and unloading mechanism 8. During loading, the crawler 4 drives the pallet 301 to be flush with the corresponding loading and unloading mechanism 8, and pushes the transport vehicle 7 towards the input end of the support mechanism 3, so that the first docking gear 305 at this end is engaged with the second docking gear 805 of the loading and unloading mechanism 8. The first docking gear 305 will rotate under the action of the transmission shaft 303, thereby driving the second docking gear 805 to rotate. The second docking gear 805 drives the second transmission gear 804 to rotate, and the second transmission gear 804 drives the third pulley 807 to rotate, thereby driving the second conveyor belt 803 to move. The second conveyor belt 803 drives multiple groups of corresponding second pulleys 801 to rotate, and drives the metal plate located above the second conveyor belt 803 to move towards the pallet 301, thereby realizing the loading operation. During unloading, the pallet 301 is located at the cutting station, and the crawler 4 drives the pallet 301 to move down until it is flush with the idle loading and unloading mechanism 8. Push the transport vehicle 7 to make the first docking gear 305 and the second docking gear 805 mesh with each other. The servo motor 307 drives the second conveyor belt 803 to move in the reverse direction, thereby driving the transmission wheel 302 to move in the reverse direction, and then making the cut metal plate be retracted back above the loading and unloading mechanism 8, thereby realizing the unloading operation. It should be noted that only during the loading or unloading process of the support mechanism 3, the loading and unloading mechanism 8 and the support mechanism 3 are in the docking state, and during other operation processes, the loading and unloading mechanism 8 is located outside the influence range of the support mechanism 3;

[0034] After the feeding is completed, the transport vehicle 7 is driven away from the pallet 301, and the pallet 301 is lifted to the implementation area of the cutting device 2 by multiple sets of crawlers 4. The cutting device 2 includes a pressing and fixing mechanism that can be lifted and lowered. The cutting device 2 cuts along the cutting opening 310. The cutting opening 310 can reduce the impact of the cutting device 2 on the pallet 301 during the cutting process and improve the service life of the pallet 301. When the second docking gear 805 is docked and engaged with the first docking gear 305, the mounting block 5 located at the bottom of the transport vehicle 7 will contact the limiting block 6, and the limiting block 6 will block the forward movement of the mounting block 5 and the transport vehicle 7, thereby playing a limiting role on the mounting block 5. The braking member provided at the bottom of the transport vehicle 7 facilitates the fixation of the transport vehicle 7 and prevents the second docking gear 805 and the first docking gear 305 from moving away from each other during the transmission process.

[0035] The above has described in detail an embodiment of the present invention, but the content described is only the preferred embodiment of the present invention and cannot be considered as limiting the implementation scope of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. An elevator support plate processing table, comprising side support plates (1) and a cutting device (2). A crawler belt (4) is longitudinally installed on the side support plates (1). Multiple groups of side support plates (1) and crawler belts (4) are provided. The cutting device (2) is arranged above the side support plates (1), and it is characterized in that , further comprising: a support mechanism (3), the support mechanism (3) includes a support plate (301), multiple groups of the side support plates (1) and the crawler belts (4) are symmetrically arranged on both sides of the support plate (301), the crawler belts (4) are fixedly arranged with the support plate (301), and a driving mechanism is arranged at the bottom of the support plate (301); a transport vehicle (7) and a loading mechanism (8), the transport vehicle (7) is arranged on one side of the support plate (301), multiple groups of the loading mechanisms (8) are provided, multiple groups of the loading mechanisms (8) are longitudinally arranged in parallel at equal intervals inside the transport vehicle (7), the transport vehicle (7) is provided with an opening on the side close to the crawler belt (4), each group of the loading mechanisms (8) includes a partition plate (802), multiple groups of connecting columns (806) are symmetrically and fixedly connected to both sides of each group of the partition plates (802), one end of each group of the connecting columns (806) away from the partition plate (802) is fixedly connected to the inner wall of the transport vehicle (7), and a transmission assembly matched with the driving mechanism is arranged on both sides of each group of the partition plates (802).

2. The processing table for an elevator support plate according to claim 1, wherein, The driving mechanism includes a transmission wheel (302) and a first conveyor belt (306), multiple groups of the transmission wheels (302) are provided, and are symmetrically rotatably connected to both sides of the support plate (301), a transmission shaft (303) is fixedly connected between the corresponding two groups of the transmission wheels (302) on both sides, an intermediate wheel (304) is fixedly connected to the middle of each group of the transmission shafts (303), multiple groups of first belt wheels (309) are rotatably connected to the support plate (301), a first conveyor belt (306) is arranged in cooperation between each group of the first belt wheels (309), the bottom of each group of the intermediate wheels (304) is in contact with the first conveyor belt (306), the first belt wheels (309) are in cooperation with the intermediate wheels (304), and a driving assembly is arranged at the bottom of the first conveyor belt (306).

3. The processing table for an elevator support plate according to claim 2, wherein, The driving assembly includes a servo motor (307) fixedly connected to the bottom of the support plate (301), a driving wheel (308) is fixedly connected to the output end of the servo motor (307), and the side of the driving wheel (308) is in contact with the first conveyor belt (306).

4. The processing table for an elevator support plate according to claim 1, wherein, The transmission assembly includes multiple groups of second pulleys (801), and each group of the second pulleys (801) is coaxially rotatably fitted on the corresponding connecting column (806). On both sides of one end of the support plate (301) close to the transport vehicle (7), first docking gears (305) are provided. The first docking gears (305) are coaxially and fixedly connected to the corresponding transmission wheels (302). On both sides of one end of the partition plate (802) close to the support plate (301), second docking gears (805) are rotatably connected and are engaged with the first docking gears (305). On both sides of the partition plate (802) close to one end of the second docking gears (805), third pulleys (807) are rotatably connected. On the side plate of the transport vehicle (7), a second transmission gear (804) is rotatably connected and is coaxially connected to the third pulley (807). The second transmission gear (804) meshes with the corresponding second docking gear (805). A second conveyor belt (803) is cooperatively provided between each group of the third pulleys (807) and the corresponding second pulleys (801).

5. The processing table for an elevator support plate according to claim 1, wherein Multiple groups of cutting openings (310) are arranged in parallel and at equal intervals on the support plate (301).

6. The processing table for an elevator support plate according to claim 1, characterized in that, An installation block (5) is provided at the bottom of the transport vehicle (7), and a limiting block (6) cooperatively matched with the installation block (5) is fixedly provided on one side of the support plate (301).

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