Automatic loading equipment for vehicle frame

Abstract

The invention discloses automatic loading equipment for a vehicle frame, and belongs to the technical field of vehicle frame transportation. Hanging rods are arranged at the four corners of the hanging bracket, and clamping mechanisms used for clamping a frame are arranged at the ends of the hanging rods. The clamping mechanism comprises a U-shaped frame, supporting plates are arranged on the inner side faces of the two opening ends of the U-shaped frame, stand columns are symmetrically arranged on the supporting plates, mounting blocks are arranged on the stand columns in a sliding mode, vertical springs are arranged on the stand columns, the stand columns are sleeved with the vertical springs, and the vertical springs are arranged between the mounting blocks and the supporting plates. A plurality of fixing blocks are arranged on the side face, facing the middle of the U-shaped frame, of the mounting block, rotating shafts are arranged on the fixing blocks, contact plates are arranged on the rotating shafts, one sides of the contact plates are fixedly connected to the rotating shafts, and baffles are arranged on the bottom face of the mounting block. According to the technical scheme, the using number of electronic elements and hydraulic elements in the vehicle frame part feeding equipment is reduced, and meanwhile the stability and safety in the vehicle frame part feeding process can be guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle frame transportation, and in particular relates to automatic loading equipment for a vehicle frame. Background Art

[0002] The main function of the frame is to serve as the basic framework of the entire equipment, used to install and fix key components such as the engine, transmission, steering gear, and maintain the correct relative position between them. After the frame is manufactured, it needs to be transported to a designated location for assembly. In the prior art, it is usually transported and transferred by truck. However, the weight of the frame is relatively large, so a loading device is required to hoist the frame onto the truck.

[0003] For example, an automatic loading device for a frame with an existing application number CN202210135787.7 includes a steel structure, a trolley moving mechanism is laterally slidably arranged on the upper end of the steel structure, and a small trolley moving mechanism is slidably arranged on the upper end of the trolley moving mechanism, etc. In the above-mentioned prior art, although the lifting and loading operations of the frame can be realized, it adopts more electronic components (electric push rods) or hydraulic components (hydraulic cylinders) to clamp and limit the frame. In actual use, this method requires staff to frequently perform inspection and maintenance due to the setting of too many electronic components and hydraulic components to avoid problems such as short circuit of electronic components or leakage of hydraulic components. Therefore, it is very inconvenient to use. Summary of the invention

[0004] In view of this, an object of the present invention is to provide an automatic frame loading device, so as to reduce the number of electronic components and hydraulic components used in the frame loading device, improve the ease of use, and at the same time ensure the stability and safety of the frame loading process.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention discloses an automatic loading device for a vehicle frame, comprising a hanger, hangers are arranged at the four corners of the hanger, and clamping mechanisms for clamping the vehicle frame are arranged on the ends of the hangers; the clamping mechanism is a U-shaped frame, and support plates are arranged on the inner side surfaces of the two open ends of the U-shaped frame, and columns are symmetrically arranged on the support plates, and mounting blocks are slidably arranged on the columns, and vertical springs are arranged on the columns, and the vertical springs are sleeved on the columns, and the vertical springs are arranged between the mounting blocks and the support plates, and a plurality of fixed blocks are arranged on one side surface of the mounting block facing the middle of the U-shaped frame, and a rotating shaft is arranged on the fixed block, and a contact plate is arranged on the rotating shaft, and one side of the contact plate is fixedly connected to The U-shaped frame is an ideal platform for the user to move the vehicle body in an orderly manner so that the user can move the vehicle body in an orderly manner.

[0007] Further, the extrusion transmission mechanism includes a wedge-shaped slider, which is slidably connected to the U-shaped frame, and the contact surfaces of the wedge-shaped slider and the mounting block are both wedge-shaped surfaces. A first rack is provided on one end of the wedge-shaped slider outside the U-shaped frame, a gear is provided above the first rack, and a second rack is provided above the gear. The first rack, the second rack and the gear are respectively meshed, and an end of the first rack is fixed to the wedge-shaped slider, the gear is rotatably connected to the U-shaped frame, the second rack is slidably connected to the U-shaped frame, and the end of the L-shaped push plate is connected to the end of the second rack.

[0008] Furthermore, a plurality of adjustment holes are provided on the connecting end of the L-shaped push plate and the second rack, a threaded column is provided on the second rack, one end of the threaded column is fixed to the second rack, one of the adjustment holes is sleeved on the threaded column, locking nuts are provided on the threaded columns at both ends of the adjustment hole, and the locking nuts are threadedly connected to the threaded column.

[0009] Furthermore, a transverse spring is provided on one end of the wedge-shaped slider located outside the U-shaped frame, one end of the transverse spring is fixed to the wedge-shaped slider, a fixing plate is provided on the other end of the transverse spring, both ends of the fixing plate are fixedly connected to the U-shaped frame, a limiting column is provided on the fixing plate, one end of the limiting column is fixed to the fixing plate, and the other end of the limiting column is arranged toward the wedge-shaped slider.

[0010] Furthermore, one side of the baffle is fixed to the lower surface of the mounting block, the other end of the baffle is arranged toward the contact plate, and the upper surface of the baffle is arranged in contact with the lower surface of the contact plate.

[0011] Furthermore, a connecting rod is provided on the rotating shaft, the lower end of the connecting rod is fixed on the rotating shaft, the upper end of the connecting rod is inclined to point to the inner wall of the U-shaped frame, a guide rod is provided on the inner side surface of the U-shaped frame below the upper end of the connecting rod, both ends of the guide rod are rotatably connected to the inner wall of the U-shaped frame, a connecting column is provided on the inner side surface of the closed end of the U-shaped frame, one end of the connecting column is fixed to the U-shaped frame, a slide plate is provided on the connecting column, the upper end of the connecting rod is provided with a traction rope, one end of the traction rope is fixed to the upper end of the connecting rod, and the other end of the traction rope passes through the guide rod and is fixedly connected to the slide plate.

[0012] Furthermore, a pressure switch is provided on the side surface of the skateboard facing the contact plate, and an electromagnet is provided on the inner side surface of the U-shaped frame. The electromagnet is electrically connected to the pressure switch, and the on-off state of the pressure switch is controlled by the number of contacts between the frame and the pressure switch, thereby controlling the on-off state of the electromagnet and controlling the adsorption state of the electromagnet to the skateboard.

[0013] The beneficial effects of the present invention are:

[0014] In this technical solution, the gravity of the frame is cleverly used to drive the mounting block to move downward, that is, the downward movement torque and stroke of the mounting block are used as the driving force to drive the extrusion transmission mechanism to work, thereby driving the L-shaped push plate to clamp the side of the frame inward, and then without the need for additional electronic components or hydraulic components, the horizontal movement of the frame when lifting the upper part can be limited, thereby ensuring the safety and stability of the upper part.

[0015] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0017] Figure 1 It is a three-dimensional schematic diagram of the automatic loading device for a vehicle frame of the present invention;

[0018] Figure 2 It is a three-dimensional schematic diagram of the clamping mechanism in the automatic loading device for the frame of the present invention;

[0019] Figure 3It is a schematic cross-sectional view of a clamping mechanism in the automatic loading device for a vehicle frame of the present invention;

[0020] Figure 4 It is a three-dimensional side schematic diagram of a component on one side of the clamping mechanism in the automatic loading device for a vehicle frame of the present invention.

[0021] The following are marked in the accompanying drawings:

[0022] 1. Frame; 2. Hanger; 3. Hanging rod; 4. Clamping mechanism; 5. U-shaped frame; 6. Support plate; 7. Mounting block; 8. Fixed block; 9. Vertical spring; 10. Rotating shaft; 11. Contact plate; 12. Wedge-shaped slider; 13. First rack; 14. Gear; 15. Second rack; 16. Bare rod; 17. Threaded column; 18. L-shaped push plate; 19. Locking nut; 20. Fixed plate; 21. Limit column; 22. Transverse spring; 23. Adjustment hole; 24. Connecting rod; 25. Guide rod; 26. Traction rope; 27. Slide plate; 28. Connecting column; 29. ​​Pressure switch; 30. Electromagnet; 31. Connecting shaft. DETAILED DESCRIPTION

[0023] like Figure 1 to Figure 4 As shown, an automatic loading device for a vehicle frame 1 includes a hanger 2, hangers 3 are provided at the four corners of the hanger 2, and clamping mechanisms 4 for clamping the vehicle frame 1 are provided on the ends of the hangers 3. It is not difficult to understand that the hanger 2 is provided with a lifting device, such as a crane or an aerial vehicle; the clamping mechanism 4 is a U-shaped frame 5, and the inner sides of the two open ends of the U-shaped frame 5 are provided with support plates 6, one side of the support plate 6 is fixed to the inner side of the U-shaped frame 5, and columns are symmetrically provided on the support plates 6, one end of the column is vertically fixed to the support plate 6, and a mounting block 7 is slidably provided on the column, and a vertical spring 9 is provided on the column, and the vertical spring 9 is sleeved on the column, and the vertical spring 9 is arranged between the mounting block 7 and the support plate 6, and a plurality of fixing blocks 8 are provided on one side of the mounting block 7 facing the middle of the U-shaped frame 5, and the fixing block 8 is provided The rotating shaft 10 is provided with a contact plate 11, one side of the contact plate 11 is fixedly connected to the rotating shaft 10, and a baffle is provided on the bottom surface of the mounting block 7, the baffle is used to limit the rotational movement of the contact plate 11 toward the open end of the U-shaped frame 5, and there is no L-shaped push plate 18 on the side of the U-shaped frame 5. One end of the L-shaped push plate 18 is slidably connected to the U-shaped frame 5, and the other end of the L-shaped push plate 18 is located in the U-shaped frame 5. An extrusion transmission mechanism is provided on the side of the U-shaped frame 5, and the extrusion transmission mechanism is used to connect the mounting block 7 and the L-shaped push plate 18. When the mounting block 7 moves downward under the gravity of the frame 1, under the transmission action of the extrusion transmission mechanism, the end of the L-shaped push plate 18 moves toward the middle of the U-shaped frame 5, thereby clamping and limiting the side of the frame 1 inside the U-shaped frame 5.

[0024] The working principle of the above technical solution is:

[0025] When the vehicle frame 1 is loaded with parts, the hanger 2 is moved to the top of the vehicle frame 1 by the lifting equipment, and then the clamping mechanism 4 is controlled to move downward. During the downward movement, the contact plate 11 will contact the crossbeam at the lifting position of the vehicle frame 1, and then the contact plate 11 will flip upward to avoid it, and then the vehicle frame 1 will enter the interior of the U-shaped frame 5. During the process of the vehicle frame 1 entering the interior of the U-shaped frame 5, when the vehicle frame 1 is out of contact with the contact plate 11, the contact plate 11 will rotate and reset to the horizontal position under the action of its own gravity. At this time, the lifting and loading operation can be carried out, that is, during lifting, the contact plate 11 moves up and contacts the vehicle frame 1. Since the contact plate 11 cannot rotate downward, the mounting block 7 will be driven to move up and down on the column under the action of the gravity of the vehicle frame 1, that is, under the action of the extrusion transmission mechanism, one end of the L-shaped push plate 18 will be pushed inward, so that it is clamped on both sides of the vehicle frame 1, and the position of the frame 1 on the horizontal plane during the lifting process is limited, so as to ensure the stability and safety when lifting and loading parts.

[0026] This arrangement cleverly utilizes the gravity of the frame 1 to drive the mounting block 7 to move downward, that is, the downward torque and stroke of the mounting block 7 are used as a driving force to drive the extrusion transmission mechanism to work, thereby driving the L-shaped push plate 18 to clamp the side of the frame 1 inward, and thus, without the need for additional electronic components, the horizontal movement of the frame 1 when lifting the upper part can be limited, thereby ensuring the safety and stability of the upper part.

[0027] In one practicable manner, specifically, the extrusion transmission mechanism includes a wedge-shaped slider 12, which is slidably connected to the U-shaped frame 5, and the contact surfaces of the wedge-shaped slider 12 and the mounting block 7 are both wedge-shaped surfaces (inclined surfaces), and a first rack 13 is provided on one end of the wedge-shaped slider 12 located outside the U-shaped frame 5, and a gear 14 is provided above the first rack 13, and a second rack 15 is provided above the gear 14, and the first rack 13, the second rack 15 and the gear 14 are respectively meshed and arranged, and an end of the first rack 13 is fixed to the wedge-shaped slider 12, and the gear 14 is rotatably connected to the U-shaped frame 5, and the rotational connection is realized by the connecting shaft 31, and the second rack 15 is slidably connected to the U-shaped frame 5, and the sliding connection is realized by the light rod 16, and the end of the L-shaped push plate 18 is connected to the end of the second rack 15.

[0028] That is, under the action of the gravity of the frame 1, the mounting block 7 will be squeezed to move downward, that is, the mounting block 7 will squeeze the inclined surface of the wedge-shaped slider 12 to move it outward, thereby driving the first rack 13 to move outward, thereby driving the gear 14 to rotate, and then the second rack 15 to move inward, thereby driving the end of the L-shaped push plate 18 to move toward the inside of the U-shaped frame 5 to clamp the frame 1. The structure of this extrusion transmission structure is ingenious and can realize the self-locking function and the centering function. Self-locking means that after the L-shaped push plate 18 clamps the frame 1, it cannot continue to move. Therefore, at this time, under the action of the gear 14, the first rack 13 and the second rack 15, the mounting block 7 will not continue to slide down, thereby realizing the locking operation. The centering function means that the L-shaped push plates 18 arranged on both sides will push the crossbeam of the frame 1 to the middle of the U-shaped frame 5 for clamping operation;

[0029] It is not difficult to understand that when the upper part reaches the specified position, due to the release of the lifting equipment, the clamping mechanism 4 will move downward under its own gravity, that is, at this time, the contact plate 11 and the frame 1 will be separated, and under the action of the vertical spring 9, the mounting block 7 will be driven to move upward and reset, and then under the action of the extrusion transmission mechanism, the L-shaped push plate 18 will be driven to reset, and then it is only necessary to manually flip the contact plate 11 to lift the clamping mechanism 4 upward.

[0030] In one practicable manner, a plurality of adjustment holes 23 are provided on one end connecting the L-shaped push plate 18 and the second rack 15, a threaded column 17 is provided on the second rack 15, one end of the threaded column 17 is fixed to the second rack 15, an adjustment hole 23 is sleeved on the threaded column 17, locking nuts 19 are provided on the threaded columns 17 at both ends of the adjustment hole 23, and the locking nuts 19 are threadedly connected to the threaded column 17.

[0031] By changing the position of the adjustment hole 23 connected to the threaded column 17, the distance between the end of the L-shaped push plate 18 and the center of the U-shaped frame 5 can be changed, thereby changing the clamping width range of the L-shaped push plate 18, thereby adapting to different widths of the clamping part with the frame 1, and thus performing clamping and limiting operations on frames 1 of different models.

[0032] In one practicable manner, a transverse spring 22 is provided on one end of the wedge-shaped slider 12 located outside the U-shaped frame 5, one end of the transverse spring 22 is fixed to the wedge-shaped slider 12, a fixing plate 20 is provided on the other end of the transverse spring 22, both ends of the fixing plate 20 are fixedly connected to the U-shaped frame 5, a limiting column 21 is provided on the fixing plate 20, one end of the limiting column 21 is fixed to the fixing plate 20, and the other end of the limiting column 21 is arranged toward the wedge-shaped slider 12.

[0033] The setting of the transverse spring 22 facilitates the reset of the contact plate 11 after it is separated from the frame 1. At the same time, the setting of the limit column 21 can limit the extreme sliding distance of the wedge slider 12 to prevent the wedge slider 12 from falling out. At the same time, it is preferred that the limit column 21 is threadedly connected to the fixing plate 20, so that the limit distance of the limit column 21 toward one end of the wedge slider 12 can be changed, so as to control the sliding distance of the wedge slider 12. Then, in combination with the distance adjustment method of adjusting the distance between the end of the L-shaped push plate 18 and the middle of the U-shaped frame 5 through the adjustment hole 23, the distance relationship between the downward movement of the mounting block 7 and the lateral movement of the L-shaped push plate 18 can be accurately adjusted. That is, it can be understood that when the frame 1 drives the mounting block 7 to move down to the extreme position in contact with the end of the limit column 21, at this time, under the action of the extrusion transmission mechanism, the L-shaped push plate 18 just moves to contact with the surface of the frame 1, that is, the clamping and limiting effect of the frame 1 is better.

[0034] In one feasible manner, one side of the baffle is fixed to the lower surface of the mounting block 7, the other end of the baffle is disposed toward the contact plate 11, and the upper surface of the baffle is disposed in contact with the lower surface of the contact plate 11. This limiting method is simple and reliable.

[0035] In one practicable manner, a connecting rod 24 is provided on the rotating shaft 10, the lower end of the connecting rod 24 is fixed on the rotating shaft 10, the upper end of the connecting rod 24 is inclined to point to the inner wall of the U-shaped frame 5, a guide rod 25 is provided on the inner side surface of the U-shaped frame 5 below the upper end of the connecting rod 24, both ends of the guide rod 25 are rotatably connected to the inner wall of the U-shaped frame 5, a connecting column 28 is provided on the inner side surface of the closed end of the U-shaped frame 5, one end of the connecting column 28 is fixed to the U-shaped frame 5, a slide plate 27 is provided on the connecting column 28, a traction rope 26 is provided on the upper end of the connecting rod 24, one end of the traction rope 26 is fixed to the upper end of the connecting rod 24, and the other end of the traction rope 26 passes through the guide rod 25 and is fixedly connected to the slide plate 27.

[0036] That is, after the loading of the frame 1 is completed, the frame 1 itself will definitely be supported by pads, etc., that is, after the lifting equipment is relaxed at this time, it moves downward under the action of gravity, so that the slide plate 27 contacts with the frame 1, and under the gravity of the clamping mechanism 4, the slide plate 27 will move upward, and then pull the traction rope 26, that is, under the action of the guide rod 25, the traction rope 26 will pull the connecting rod 24 to rotate, and then pull the rotating shaft 10 to rotate, and then pull the contact plate 11 to rotate, and then the contact plate 11 can be rotated without manual operation, so that the clamping mechanism 4 can be taken out.

[0037] In one practicable manner, a pressure switch 29 is provided on one side surface of the slide plate 27 facing the contact plate 11, and an electromagnet 30 is provided on the inner side surface of the U-shaped frame 5. The electromagnet 30 is electrically connected to the pressure switch 29. The on-off state of the pressure switch 29 is controlled by the number of contacts between the frame 1 and the pressure switch 29, such as one contact to connect the switch and two contacts to disconnect the switch, thereby controlling the on-off state of the electromagnet 30, and thereby controlling the adsorption state of the electromagnet 30 to the slide plate 27.

[0038] The working principle of the above technical solution is:

[0039] When the loading is completed, the clamping mechanism 4 moves down under the action of gravity, the frame 1 contacts the pressure switch 29, and then the electromagnet 30 is energized, that is, the slide plate 27 is attracted upward, and then the traction rope 26 drives the contact plate 11 to rotate, and the rotation position of the contact plate 11 is maintained at this time, that is, the clamping mechanism 4 can be taken out at this time. After being taken out, when the clamping mechanism 4 acts on the next frame 1, the clamping mechanism 4 will move down, that is, the frame 1 contacts the slide plate 27, and will contact the pressure switch 29 again, and then disconnect it, then the electromagnet 30 is powered off at this time, after the power is off, the lifting equipment tightens the lifting rope, that is, the clamping mechanism 4 will move up, the slide plate 27 will be separated from the frame 1, and the slide plate 27 will slide down, that is, the traction restriction of the contact plate 11 is released at this time, that is, under the action of its own gravity, it will flip to a horizontal position, and then contact the frame 1 for support, and the lifting operation can be carried out. That is, this setting method can realize the automatic clamping and lifting of the frame 1 by the clamping assembly and the automatic removal after the loading is completed without manual operation. The operation steps and labor intensity of the staff are simplified (in the prior art, the staff needs to perform a series of operations to achieve operations such as clamping, loosening and taking out the frame 1).

[0040] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A vehicle frame automatic loading device, comprising a hanger, wherein hangers are provided at the four corners of the hanger, characterized in that: The ends of the suspension rods are provided with clamping mechanisms for clamping the frame; the clamping mechanism U-shaped frame, the inner sides of the two open ends of the U-shaped frame are provided with support plates, the support plates are symmetrically provided with columns, the columns are slidably provided with mounting blocks, the columns are provided with vertical springs, the vertical springs are sleeved on the columns, and the vertical springs are arranged between the mounting blocks and the support plates, a side surface of the mounting block facing the middle of the U-shaped frame is provided with a plurality of fixed blocks, the fixed block is provided with a rotating shaft, the rotating shaft is provided with a contact plate, one side of the contact plate is fixedly connected to the rotating shaft, and the bottom surface of the mounting block is provided with The baffle is used to limit the rotational movement of the contact plate toward the open end of the U-shaped frame. There is no L-shaped push plate on the side of the U-shaped frame. One end of the L-shaped push plate is slidably connected to the U-shaped frame, and the other end of the L-shaped push plate is located in the U-shaped frame. An extrusion transmission mechanism is provided on the side of the U-shaped frame, and the extrusion transmission mechanism is used to connect the mounting block and the L-shaped push plate. When the mounting block moves downward under the gravity of the frame, under the transmission action of the extrusion transmission mechanism, the end of the L-shaped push plate moves toward the middle of the U-shaped frame, thereby clamping and limiting the side of the frame inside the U-shaped frame.

2. The automatic loading device for a vehicle frame according to claim 1, characterized in that: The extrusion transmission mechanism includes a wedge-shaped slider, which is slidably connected to the U-shaped frame, and the contact surfaces of the wedge-shaped slider and the mounting block are both wedge-shaped surfaces. A first rack is provided on one end of the wedge-shaped slider located outside the U-shaped frame, a gear is provided above the first rack, and a second rack is provided above the gear. The first rack, the second rack and the gear are respectively meshed, and an end of the first rack is fixed to the wedge-shaped slider, the gear is rotatably connected to the U-shaped frame, the second rack is slidably connected to the U-shaped frame, and the end of the L-shaped push plate is connected to the end of the second rack.

3. The automatic loading device for a vehicle frame according to claim 2, characterized in that: A plurality of adjustment holes are provided on one end of the connection between the L-shaped push plate and the second rack, a threaded column is provided on the second rack, one end of the threaded column is fixed to the second rack, one of the adjustment holes is sleeved on the threaded column, locking nuts are provided on the threaded columns at both ends of the adjustment hole, and the locking nuts are threadedly connected to the threaded column.

4. The automatic loading device for a vehicle frame according to claim 1, characterized in that: The wedge-shaped slider is located at one end outside the U-shaped frame and is provided with a transverse spring, one end of the transverse spring is fixed to the wedge-shaped slider, and the other end of the transverse spring is provided with a fixing plate, both ends of the fixing plate are fixedly connected to the U-shaped frame, and a limiting column is provided on the fixing plate, one end of the limiting column is fixed to the fixing plate, and the other end of the limiting column is arranged toward the wedge-shaped slider.

5. The automatic loading device for a vehicle frame according to claim 1, characterized in that: One side of the baffle is fixed on the lower surface of the mounting block, the other end of the baffle is arranged toward the contact plate, and the upper surface of the baffle is arranged in contact with the lower surface of the contact plate.

6. The automatic loading device for a vehicle frame according to claim 1, characterized in that: A connecting rod is provided on the rotating shaft, the lower end of the connecting rod is fixed on the rotating shaft, the upper end of the connecting rod is inclined to point to the inner wall of the U-shaped frame, a guide rod is provided on the inner side surface of the U-shaped frame below the upper end of the connecting rod, both ends of the guide rod are rotatably connected to the inner wall of the U-shaped frame, a connecting column is provided on the inner side surface of the closed end of the U-shaped frame, one end of the connecting column is fixed to the U-shaped frame, a slide plate is provided on the connecting column, the upper end of the connecting rod is provided with a traction rope, one end of the traction rope is fixed to the upper end of the connecting rod, and the other end of the traction rope passes through the guide rod and is fixedly connected to the slide plate.

7. The automatic loading device for a vehicle frame according to claim 6, characterized in that: A pressure switch is provided on the side surface of the skateboard facing the contact plate, and an electromagnet is provided on the inner side surface of the U-shaped frame. The electromagnet is electrically connected to the pressure switch. The on-off state of the pressure switch is controlled by the number of contacts between the frame and the pressure switch, thereby controlling the on-off state of the electromagnet and controlling the adsorption state of the electromagnet to the skateboard.

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