loader

Abstract

The utility model relates to vehicle technical field, concretely points to a loader, including the automobile chassis, is equipped with the vehicle control system and the bridge platform on the automobile chassis, is equipped with the wheel back to the detection mechanism on the automobile chassis, the wheel back to the detection mechanism includes the sensor and the inductive plate, is equipped with the sensor on the car beam of automobile chassis, is fixedly equipped with the inductive plate on the steering knuckle of automobile chassis, is equipped with the butt -joint angle adjustable mechanism on the bridge platform, the butt -joint angle adjustable mechanism includes the guide plate, the guide support beam, the support limiting component, the drive part, two guide plates are arranged at intervals on the bridge platform, are equipped with the guide support beam between two guide plates, the guide plate front end is hinged with the guide support beam, rear end is hinged with the bridge platform, the guide support beam is connected with the bridge platform through the support limiting component, the guide support beam drives left and right movement through the drive part, the drive part is hinged with the bridge platform, the utility model structure is ingenious, and the wheel back to the detection has, the bridge platform butt -joint angle adjustable, the butt -joint width adjustable, cargo transmission efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to a loader. Background Technology

[0002] Container cargo loaders are widely used in major airports. Existing container cargo loaders generally include a truck chassis, a vehicle PLC controller, a power unit, and a travel motor. The vehicle PLC controller is used to control the loader's operation. A conveyor platform is connected to the truck chassis, consisting of a main platform and an axle platform. The main platform is equipped with a conveyor motor, chain, conveyor rollers, and a motor controller. The axle platform is equipped with a conveyor motor, chain, conveyor rollers, and a motor controller. The chassis frame of the truck chassis is connected to the main platform via a first lifting mechanism, and to the axle platform via a second lifting mechanism. Next, the first lifting mechanism drives the main platform to lift and lower, and the second lifting mechanism drives the bridge platform to lift and lower. The first lifting mechanism of the main platform lifts the main platform to the same height as the bridge platform and docks with it to realize the transfer of goods. The existing technology of loaders has the following shortcomings in use: First, when parking, the driver often forgets to straighten the wheels, which causes the loader to rush directly in one direction when starting again because the wheels are not straightened. Since loaders are usually docked with aircraft, if the loader wheels are not straightened and the loader starts directly again, it is easy to scrape or collide with the aircraft. Secondly, in existing technologies, when the platform docks with the aircraft cabin, there is often a misalignment between the front end of the bridge platform and the aircraft cabin door. That is, the front end of the bridge platform is not directly facing the aircraft cabin door. If cargo is to be transferred in this situation, the cargo cannot be loaded onto the bridge platform and may slip off the bridge platform. Operators need to use a loader to adjust the docking angle of the bridge platform, which takes a long time and indirectly reduces cargo transfer efficiency. In addition, in existing technologies, aircraft cabin doors can be large or small. When the bridge platform is too wide relative to the aircraft cabin door, after the cargo is loaded onto the bridge platform, the cargo will move in a scattered manner under the action of the rollers, which will prevent the cargo from being transferred in the correct order and reduce cargo transfer efficiency. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies and provide a loader with an ingenious structure, wheel alignment detection, adjustable bridge platform docking angle and docking width, and high cargo transfer efficiency.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A loader includes a vehicle chassis, on which an onboard control system and a bridge platform are mounted. The loader is characterized by having a wheel alignment detection mechanism on the vehicle chassis, comprising a sensor and a sensing plate. The sensor is mounted on the chassis beam, and the sensing plate is fixedly mounted on the chassis steering knuckle. The sensor is fixedly connected to the chassis beam. The sensing plate cooperates with the sensor so that when the wheel is aligned, the sensing plate is detected by the sensor, thus achieving wheel alignment detection.

[0005] The sensor described in this invention is detachably and fixedly connected to the vehicle chassis beam via a sensor bracket, and the sensing plate is fixedly connected to the steering knuckle via screws to facilitate the replacement and maintenance of the sensor and sensing plate.

[0006] The bridge platform of this utility model is provided with a docking angle adjustable mechanism. The docking angle adjustable mechanism includes a guide plate, a guide beam, a support and limiting component, and a driving component. Two guide plates are spaced apart on the bridge platform, and a guide beam is provided between the two guide plates. The front end of the guide plate is hinged to the guide beam, and the rear end is hinged to the bridge platform. The guide beam is connected to the bridge platform via the support and limiting component. The guide beam is driven to move left and right by the driving component. The driving component is hinged to the bridge platform so that the left and right movement of the guide beam by the driving component causes the front ends of the two guide plates to swing relative to the rear ends of the guide plates, thereby changing the docking angle of the front ends of the two guide plates.

[0007] The support and limiting component of this utility model can be composed of upper rollers and lower rollers. The upper end of the guide beam is provided with upper rollers spaced apart, and the lower end is provided with lower rollers spaced apart. The upper end of the guide beam abuts against the upper rollers, and the lower end abuts against the lower rollers. The upper rollers and lower rollers are arranged opposite to each other. The upper rollers and lower rollers are respectively fixedly connected to the bridge platform via roller brackets so as to clamp and support the guide beam by the upper rollers and lower rollers relative to each other. At the same time, when the guide beam moves left and right, the upper rollers and lower rollers can guide the movement of the guide beam.

[0008] The support and limiting component of this utility model can also be composed of an upper limiting plate and a lower roller. The upper end of the guide beam is provided with an upper limiting plate and the lower end is provided with a lower roller. The upper end of the guide beam abuts against the upper limiting plate and the lower end abuts against the lower roller. The upper limiting plate and the lower roller cooperate to support and limit the guide beam. The upper limiting plate is fixedly connected to the bridge platform, and the lower roller is fixedly connected to the bridge platform via a roller bracket, so that the guide beam is supported by the upper limiting plate and the lower roller relative to each other. At the same time, when the guide beam moves left and right, the lower roller can guide the movement of the guide beam.

[0009] The support and limiting component of this utility model can also be composed of a slider and a slide rail. The guide beam is slidably connected to the bridge platform via the slider and slide rail, so as to limit and support the guide beam by the slider and slide rail, so as to prevent the guide beam from shaking during left and right movement. At the same time, the slider and slide rail can make the guide beam move smoothly.

[0010] The guide beam of this utility model is provided with at least two adjusting rods. The lower end of the adjusting rod is fixedly connected to the guide beam. The bridge platform is provided with a limiting hole. The front end of the guide plate is provided with a front limiting rod. The upper end of the front limiting rod is fixedly connected to the guide plate, and the lower end is provided with a connecting groove with the opening facing downward. The front limiting rod passes through the limiting hole, and the adjusting rod is inserted into the connecting groove to limit the connection between the front limiting rod and the guide beam. The installation position of the guide plate can be adjusted by different adjusting rods, thereby adjusting the width and angle between the two guide plates.

[0011] The limiting hole described in this utility model is an elongated hole, which limits the left and right movement of the guide beam, thereby adjusting the offset angle of the guide plate.

[0012] The guide plate of this utility model is provided with a rear limiting rod at the rear end, and the bridge platform is provided with at least two supporting limiting grooves at the rear end. The supporting limiting grooves are arranged opposite to the adjusting rod. The upper end of the rear limiting rod is fixedly connected to the guide plate, and the lower end is inserted into the supporting limiting groove and rotatably connected to the bridge platform, so as to adjust the position of the rear end of the guide plate by means of the supporting limiting groove and the rear limiting rod.

[0013] The guide plate of this utility model is provided with a handle at the upper end, and the handle is fixedly connected to the guide plate so as to facilitate lifting and placing the guide plate through the handle.

[0014] This utility model, due to the above-mentioned structure, has the advantages of ingenious structure, wheel alignment detection, adjustable bridge platform docking angle, adjustable docking width, and high cargo transfer efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the wheel alignment detection mechanism in this utility model.

[0017] Figure 3 This is a utility model Figure 2 Enlarged schematic diagram of direction A in the middle.

[0018] Figure 4 This is an enlarged schematic diagram of the adjustable docking angle mechanism of this utility model.

[0019] Figure 5 This is an enlarged schematic diagram of the guide beam of this utility model.

[0020] Figure 6 This is a utility model Figure 5 A magnified view of a portion of the image.

[0021] Figure 7 This is an enlarged schematic diagram of the guide plate in this utility model.

[0022] Reference numerals: Bridge platform 15, vehicle chassis 18, wheel return detection mechanism 21, sensor 22, sensing plate 23, vehicle beam 24, steering knuckle 25, sensor bracket 26, docking angle adjustable mechanism 2-2, guide plate 2-3, guide support beam 2-4, support and limiting assembly 2-5, drive component 2-6, upper roller 2-7, lower roller 2-8, adjusting rod 2-9, limiting hole 2-10, front limiting rod 2-11, connecting groove 2-12, support and limiting groove 2-13, rear limiting rod 2-14, handle 2-15. Detailed Implementation

[0023] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0024] As attached Figure 1-3 A loader includes a vehicle chassis 18, on which an onboard control system and a bridge platform 15 are mounted. The loader is characterized by having a wheel alignment detection mechanism 21 on the vehicle chassis 18. The wheel alignment detection mechanism 21 includes a sensor 22 and a sensing plate 23. The sensor 22 is mounted on a beam 24 of the vehicle chassis 18, and the sensing plate 23 is fixedly mounted on a steering knuckle 25 of the vehicle chassis 18. The sensor 22 is fixedly connected to the beam 24 of the vehicle chassis 18 via a sensor bracket 26. The sensing plate 23 is configured in cooperation with the sensor 22 so that when the wheel is aligned, the sensing plate 23 is detected by the sensor 22, thus achieving wheel alignment detection.

[0025] As attached Figure 4-7 The bridge platform 15 of this utility model is provided with a docking angle adjustable mechanism 2-2. The docking angle adjustable mechanism 2-2 includes a guide plate 2-3, a guide support beam 2-4, a support and limiting component 2-5, and a driving component 2-6. Two guide plates 2-3 are spaced apart on the bridge platform 15, and a guide support beam 2-4 is provided between the two guide plates 2-3. The front end of the guide plate 2-3 is hinged to the guide support beam 2-4, and the rear end is hinged to the bridge platform 15. The guide support beam 2-4 is connected to the bridge platform 15 via the support and limiting component 2-5. The guide support beam 2-4 is driven to move left and right by the driving component 2-6. The driving component 2-6 is hinged to the bridge platform 15 so that the left and right movement of the guide support beam 2-4 by the driving component 2-6 causes the front ends of the two guide plates 2-3 to swing relative to the rear ends of the guide plates 2-3, thereby changing the docking angle of the front ends of the two guide plates 2-3.

[0026] The support and limiting assembly of this utility model can be composed of upper rollers 2-7 and lower rollers 2-8. The upper end of the guide beam 2-4 is provided with upper rollers 2-7 at intervals, and the lower end is provided with lower rollers 2-8 at intervals. The upper end of the guide beam 2-4 abuts against the upper rollers 2-7, and the lower end abuts against the lower rollers 2-8. The upper rollers 2-7 and lower rollers 2-8 are arranged opposite to each other. The upper rollers 2-7 and lower rollers 2-8 are fixedly connected to the bridge platform 15 through roller brackets, so that the guide beam 2-4 is supported by the upper rollers 2-7 and lower rollers 2-8. At the same time, when the guide beam 2-4 moves left and right, the upper rollers 2-7 and lower rollers 2-8 can guide the movement of the guide beam 2-4.

[0027] The support and limiting component of this utility model can also be composed of an upper limit plate and a lower roller 2-8. The upper end of the guide beam 2-4 is provided with an upper limit plate, and the lower end is provided with a lower roller 2-8. The upper end of the guide beam 2-4 abuts against the upper limit plate, and the lower end abuts against the lower roller 2-8. The upper limit plate and the lower roller 2-8 cooperate to support and limit the guide beam 2-4. The upper limit plate is fixedly connected to the bridge platform, and the lower roller 2-8 is fixedly connected to the bridge platform 15 via a roller bracket, so that the upper limit plate and the lower roller 2-8 can clamp and support the guide beam 2-4 respectively. At the same time, when the guide beam 2-4 moves left and right, the lower roller 2-8 can guide the movement of the guide beam 2-4.

[0028] The support and limiting component of this utility model can also be composed of a slider and a slide rail. The guide beam 2-4 is slidably connected to the bridge platform 15 via the slider and slide rail, so as to limit and support the guide beam by the slider and slide rail, so as to prevent the guide beam from shaking during left and right movement. At the same time, the slider and slide rail can make the guide beam move smoothly.

[0029] At least two adjusting rods 2-9 are provided on the guide beam 2-4 of this utility model. The lower end of the adjusting rod 2-9 is fixedly connected to the guide beam. The bridge platform 15 is provided with a limiting hole 2-10. The front end of the guide plate 2-3 is provided with a front limiting rod 2-11. The upper end of the front limiting rod 2-11 is fixedly connected to the guide plate 2-3, and the lower end is provided with a connecting groove 2-12 with the opening facing downward. The front limiting rod 2-11 passes through the limiting hole 2-10, and the adjusting rod 2-9 is inserted into the connecting groove 2-12, so that the front limiting rod 2-11 is limited and connected to the guide beam 2-4. The installation position of the guide plate can be adjusted by different adjusting rods, thereby adjusting the width and angle between the two guide plates.

[0030] The limiting hole 2-10 of this utility model is an elongated hole, which limits the left and right movement distance of the guide beam through the limiting hole 2-10, thereby adjusting the offset angle of the guide plate.

[0031] The guide plate 2-3 of this utility model is provided with a rear limiting rod 2-14 at its rear end, and the bridge platform 15 is provided with at least two supporting limiting grooves 2-13 at its rear end. The supporting limiting grooves 2-13 are arranged opposite to the adjusting rod 2-9. The upper end of the rear limiting rod 2-14 is fixedly connected to the guide plate 2-3, and the lower end is inserted into the supporting limiting groove 2-13 and rotatably connected to the bridge platform 15, so as to adjust the position of the rear end of the guide plate through the supporting limiting grooves and the rear limiting rod.

[0032] The guide plate 2-3 of this utility model is provided with a handle 2-15 at its upper end. The handle 2-15 is fixedly connected to the guide plate 2-3 so as to facilitate lifting and placing of the guide plate through the handle.

[0033] As attached Figure 1 The loader is a conventional containerized cargo loader. The loader has an onboard control system and a chassis. The chassis uses existing technology. This invention installs a sensor 22 and an induction plate 23 on the existing chassis. The sensor 22 is fixed to a sensor bracket 26, which is detachably and fixedly connected to the chassis beam 24 via mounting holes and screws. The induction plate 23 is L-shaped, with one end facing the sensor 22 to form a sensing end, and the other end detachably and fixedly connected to the steering knuckle of the chassis 18 via mounting holes and screws. Screw installation facilitates maintenance and disassembly. The onboard control system is such as a PLC control system. The sensor 22 is connected to the onboard control system. The sensor 22 can be a proximity switch. The initial state is when the wheels are straightened, at which point the induction plate 23 faces the sensor 22, and the sensor 22 can sense the movement. Sensor 23 transmits a signal to the vehicle control system so the driver is aware that the wheels are aligned. If sensor 22 does not detect sensor 23, it also transmits a signal to the vehicle control system so the driver is aware that the wheels are not aligned and need to be adjusted promptly to prevent the loader from colliding with the aircraft when it restarts due to misaligned wheels. The loader truck chassis typically has a display screen in the cab, which can display a wheel alignment icon, such as a wheel alignment indicator light. When sensor 22 detects sensor 23, it transmits a signal to the vehicle control system, which turns off the wheel alignment indicator light. When sensor 22 does not detect sensor 23, it transmits a signal to the vehicle control system, which turns on the wheel alignment indicator light to remind the driver to align the wheels promptly. As attached Figure 4-7This utility model provides guide plates 2-3 on both sides of the bridge platform 15. A front limiting rod 2-11 is provided at the front end of the guide plate 2-3, and a rear limiting rod 2-14 is provided at the rear end. The front and rear limiting rods 2-11 and 2-14 support the guide plate 2-3, so that the portion of the guide plate 2-3 between the front and rear limiting rods 2-11 is higher than the height of the rollers on the bridge platform 15. This facilitates the blocking and guidance of goods during transport. In this embodiment, the supporting limiting component 2-5 can have three structures, one of which is shown in the attached figure. Figure 5 and 6 As shown, the support and limiting component 2-5 consists of upper rollers 2-7 and lower rollers 2-8. In this embodiment, three upper rollers 2-7 and three lower rollers 2-8 are provided, and the number can be adjusted according to requirements. The upper rollers 2-7 and lower rollers 2-8 are arranged in a corresponding manner, one above the other, to support and limit the guide beam 2-4, preventing the guide beam 2-4 from swaying during left and right movement. At the same time, when the guide beam 2-4 is driven to move left and right by the driving component 2-6, the upper rollers 2-7 and lower rollers 2-8 can guide the movement of the guide beam 2-4. The support and limiting assembly 2-5 can also consist of an upper limiting plate and lower rollers 2-8. Multiple lower rollers 2-8 can be spaced apart, and the upper limiting plate can be multiple limiting plates. The upper limiting plate and lower rollers 2-8 cooperate to support and limit the guide beam 2-4. Alternatively, the support and limiting assembly can consist of a slider and a slide rail. A slider is fixed to the lower end of the guide beam 2-4, and a slide rail is fixed to the bridge platform 15. The guide beam 2-4 is slidably connected to the bridge platform 15 via the slider and slide rail, providing support, limiting, and guiding for the guide beam 2-4. Adjusting rods 2-9 are spaced apart on the guide beam 2-4, with unequal spacing between adjacent adjusting rods 2-9. When two guide plates 2-3 are connected to adjusting rods 2-9 at different positions on the guide beam 2-4, the spacing between the two guide plates 2-3 is different. A front limiting rod 2-11 is fixedly installed at the front end of the guide plate 2-3, and a downward-opening connecting groove 2-12 is provided at the lower end of the front limiting rod 2-11. The connecting groove 2-12 is inserted into the adjusting rod 2-9, and the inner diameter of the connecting groove 2-12 is larger than the outer diameter of the adjusting rod 2-9. A rear limiting rod 2-14 is fixedly installed at the rear end of the guide plate 2-3, and a support limiting groove 2-13 is provided at the rear end of the bridge platform 15. The inner diameter of the support limiting groove 2-13 is larger than the outer diameter of the rear limiting rod 2-14, making it convenient and quick to raise and lower the guide plate 2-3. The adjusting rods 2-9, limiting holes 2-10, and support limiting grooves 2-13 are set one-to-one, as shown in the attached figure. Figure 4 and attached Figure 5In this embodiment, the bridge platform 15 has six adjusting rods 2-9 and six limiting holes 2-10 arranged from left to right at its front end. Correspondingly, the bridge platform 15 has six supporting limiting grooves 2-13 arranged from left to right at its rear end. The distance between adjacent adjusting rods 2-9 is not equal, and the distance between adjacent supporting limiting grooves 2-13 is also not equal. The number and position of the adjusting rods 2-9, limiting holes 2-10, and supporting limiting grooves 2-13 are not fixed. The limiting holes 2-10 are elongated holes, and their lateral length can be set according to requirements. Compared with the prior art, the angle of the front end of the two guide plates 2-3 can be adjusted according to the position of the aircraft door. The rear end position of the guide plates 2-3 remains unchanged, and the drive component is activated. 2-6, the drive component 2-6 can be an existing hydraulic cylinder or electric cylinder. The drive component 2-6 can be connected to the loader's onboard PLC control system for convenient operation by the operator while driving. The drive component 2-6 drives the guide beam 2-4 to move left and right under the action of the support and limiting assembly 2-5. The movement of the guide beam 2-4 moves the guide plates 2-3, adjusting the opening direction of the two guide plates 2-3. This allows for easy adjustment of the cargo inlet direction between the two guide plates 2-3 according to the angle of the aircraft door. The distance between the two guide plates 2-3 can also be adjusted according to the width of the aircraft door. When the aircraft door is small, the guide plates 2-3 on both sides can be moved towards the middle to reduce the width between the two guide plates 2-3. The width between the two guide plates 2-3 is adjusted so that it precisely matches the width of the aircraft door. Taking the movement of the left guide plate 2-3 as an example, the operator holds the handle 2-15 on the guide plate 2-3 to lift it up. This can be done by two people. The front end of the guide plate 2-3 separates from the guide support beam 2-4, and the rear end of the guide plate 2-3 separates from the bridge platform 15. The guide plate 2-3 is then moved horizontally. According to the position and width of the aircraft door, the guide plate 2-3 is adjusted to fit into the appropriate limiting hole 2-10 and support limiting groove 2-13 on the bridge platform 15. The guide plate 2-3 is then lowered so that the front end of the guide plate 2-3 passes through the limiting hole 2-10 and engages with the adjusting rod 2-9, and the rear end is inserted into the support limiting groove 2-13. This adjustment is repeated. The guide plates 2-3 on the right side allow for adjustment of their positions and the width between them. This invention features a simple structure and adjustable front angles of the two guide plates, creating a guide entrance between them. This allows for quick guidance of goods from the aircraft door onto the bridge platform, eliminating the need to adjust the entire loader and achieving accurate docking with the aircraft door. The guide plates also prevent goods from falling off. Furthermore, the distance between the two guide plates can be adjusted according to the distance to the aircraft door, and the width between the two guide plates matches the width of the aircraft door. This ensures that goods can enter the bridge platform from the aircraft door between the two guide plates. The two guide plates, in conjunction with rollers, guide the goods during transport, improving transport efficiency.

[0034] This utility model, due to the above-mentioned structure, has the advantages of ingenious structure, wheel alignment detection, adjustable bridge platform docking angle, adjustable docking width, and high cargo transfer efficiency.

Claims

1. A loader, comprising a vehicle chassis (18), wherein the vehicle chassis (18) is provided with an on-board control system and a bridge platform (15), characterized in that: The vehicle chassis (18) is provided with a wheel return detection mechanism (21), which includes a sensor (22) and a sensing plate (23). The vehicle chassis (18) is provided with a sensor (22) on a beam (24), and the vehicle chassis (18) is provided with a sensing plate (23) on a steering knuckle (25). The sensor (22) is fixedly connected to the beam (24) of the vehicle chassis (18), and the sensing plate (23) is configured in cooperation with the sensor (22).

2. A loader according to claim 1, characterized in that: The sensor (22) is detachably and fixedly connected to the beam (24) of the vehicle chassis (18) via the sensor bracket (26), and the sensing plate (23) is fixedly connected to the steering knuckle (25) via screws.

3. A loader according to claim 1 or 2, characterized in that: The bridge platform (15) is provided with a docking angle adjustable mechanism (2-2). The docking angle adjustable mechanism (2-2) includes a guide plate (2-3), a guide support beam (2-4), a support limiting component (2-5), and a driving component (2-6). Two guide plates (2-3) are spaced apart on the bridge platform (15). A guide support beam (2-4) is provided between the two guide plates (2-3). The front end of the guide plate (2-3) is hinged to the guide support beam (2-4), and the rear end is hinged to the bridge platform (15). The guide support beam (2-4) is connected to the bridge platform (15) via the support limiting component (2-5). The guide support beam (2-4) is driven to move left and right by the driving component (2-6). The driving component (2-6) is hinged to the bridge platform (15).

4. A loader according to claim 3, characterized in that: The support and limiting assembly consists of an upper roller (2-7) and a lower roller (2-8). The upper end of the guide beam (2-4) is provided with an upper roller (2-7) spaced apart, and the lower end is provided with a lower roller (2-8) spaced apart. The upper end of the guide beam (2-4) abuts against the upper roller (2-7), and the lower end abuts against the lower roller (2-8). The upper roller (2-7) and the lower roller (2-8) are arranged opposite to each other. The upper roller (2-7) and the lower roller (2-8) are fixedly connected to the bridge platform (15) through roller brackets.

5. A loader according to claim 3, characterized in that: The supporting and limiting component can also be composed of an upper limit plate and a lower roller (2-8). The upper end of the guide beam (2-4) is provided with an upper limit plate and the lower end is provided with a lower roller (2-8). The upper end of the guide beam (2-4) abuts against the upper limit plate and the lower end abuts against the lower roller (2-8). The upper limit plate and the lower roller (2-8) cooperate to support and limit the guide beam (2-4). The upper limit plate is fixedly connected to the bridge platform, and the lower roller (2-8) is fixedly connected to the bridge platform (15) via a roller bracket.

6. A loader according to claim 3, characterized in that: The support limiting component consists of a slider and a slide rail, and the guide beam (2-4) is slidably connected to the bridge platform (15) via the slider and the slide rail.

7. A loader according to claim 3, characterized in that: At least two adjusting rods (2-9) are provided on the guide beam (2-4). The lower end of the adjusting rod (2-9) is fixedly connected to the guide beam. The bridge platform (15) is provided with a limiting hole (2-10). The front end of the guide plate (2-3) is provided with a front limiting rod (2-11). The upper end of the front limiting rod (2-11) is fixedly connected to the guide plate (2-3), and the lower end is provided with a connecting groove (2-12) with the opening facing downward. The front limiting rod (2-11) passes through the limiting hole (2-10), and the adjusting rod (2-9) is inserted into the connecting groove (2-12) to limit the connection between the front limiting rod (2-11) and the guide beam (2-4).

8. A loader according to claim 7, characterized in that: The limiting hole (2-10) is an elongated hole.

9. A loader according to claim 3, characterized in that: The guide plate (2-3) is provided with a rear limiting rod (2-14) at its rear end. The bridge platform (15) is provided with at least two support limiting grooves (2-13) at its rear end. The support limiting grooves (2-13) are arranged opposite to the adjusting rod (2-9). The upper end of the rear limiting rod (2-14) is fixedly connected to the guide plate (2-3), and the lower end is inserted into the support limiting groove (2-13) and rotatably connected to the bridge platform (15).

10. A loader according to any one of claims 4-9, characterized in that: The guide plate (2-3) is provided with a handle (2-15) at its upper end.

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