Oil drum carrying, clamping and fixing mechanism for AVG trolley

Abstract

The utility model discloses an oil drum carrying, clamping and fixing mechanism for an AVG trolley, and relates to the technical field of oil drum carrying, the oil drum carrying, clamping and fixing mechanism comprises two upper-layer clamping plates and a connecting arm, the number of the upper-layer clamping plates for clamping an oil drum is two, and the two upper-layer clamping plates are located on the two sides of the oil drum respectively; lower-layer clamping plates are arranged below the two upper-layer clamping plates; during use, the hydraulic cylinder controls the transmission frame to move in the direction away from the connecting base, meanwhile, the transmission frame drives the connecting arm to move through the transmission piece, the connecting arm rotates with the connecting position of the connecting arm and the main support as the circle center, and the connecting arm drives the upper clamping plate and the lower clamping plate which are fixedly connected with the connecting arm to move when rotating. The two upper-layer clamping plates and the two lower-layer clamping plates are far away from each other, so that enough space is provided for the oil drum to enter the space between the two upper-layer clamping plates; the connecting arms play a role in supporting the upper-layer clamping plates and the lower-layer clamping plates and can control the upper-layer clamping plates and the lower-layer clamping plates to move at the same time, and the hydraulic cylinders can drive the two upper-layer clamping plates and the two lower-layer clamping plates to move synchronously.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of oil barrel transportation, in particular to an oil barrel transportation clamping and fixing mechanism for an AVG trolley. Background Art

[0002] AGV stands for Automated Guided Vehicle, and its most common applications include AGV handling robots or AGV carts. Its main functions are automatic logistics handling and transportation. AGV handling robots automatically transport items to designated locations through special landmark navigation. The most common guidance methods are magnetic strip guidance, laser guidance, magnetic nail navigation, and inertial navigation.

[0003] Chinese patent publication number CN 114229750 B discloses an oil drum clamping device and a forklift, which relate to the technical field of oil drum handling, wherein a slide rod is fixedly connected to a support rod, a lower jaw is vertically slidably arranged on the support rod through a slide rod, a jaw is arranged at one end of the jaw, a first elastic unit restores the deformation process to drive the lower jaw to slide upward relative to the support rod, an upper jaw is rotatably arranged on the lower jaw, a jaw hook is arranged at one end of the upper jaw, a slide groove is provided on the upper jaw, and the slide rod is slidably matched with the slide groove;

[0004] The above-mentioned oil drum clamping device clamps the edge of the top of the oil drum through the cooperation of the upper clamp and the lower clamp, and then lifts and fixes the oil drum in cooperation with the supporting structure; however, the weight of the oil drum, especially the fully loaded oil drum, is very large. When the upper clamp and the lower clamp clamp the top edge of the oil drum, the force points of the entire oil drum are all concentrated on the clamped part of the oil drum, resulting in a sudden increase in pressure on the edge of the oil drum, which will cause the top edge of the oil drum to be severely deformed or even broken, making it impossible for the upper clamp and the lower clamp to apply clamping force to the oil drum, causing the oil drum to fall during transportation. Utility Model Content

[0005] The purpose of the utility model is to provide an oil drum handling, clamping and fixing mechanism for an AVG trolley, which clamps the oil drum by two upper clamping plates and two lower clamping plates, and the force bearing area of ​​the oil drum will not be concentrated on one point, so as to solve the technical problems raised by the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An oil barrel handling, clamping and fixing mechanism for an AVG trolley comprises an upper clamping plate and a connecting arm, wherein two upper clamping plates for clamping the oil barrel are provided, and the two upper clamping plates are respectively located on both sides of the oil barrel; a lower clamping plate is provided below the two upper clamping plates; the two upper clamping plates and the two lower clamping plates are provided with arcuate surfaces, and the arcuate surfaces of the upper clamping plates and the lower clamping plates are also provided with concave patterns;

[0008] Two L-shaped connecting arms are provided, and one end of the connecting arm is located between the upper plywood and the lower plywood; the top of the connecting arm is fixedly connected to a bottom corner of the upper plywood by bolts, and the bottom is fixedly connected to a top corner of the lower plywood;

[0009] The ends of the two connecting arms away from the upper clamping plate are fixedly connected to the transmission members, and the ends of the two transmission members away from the connecting arms are respectively fixedly connected to the two ends of the transmission frame; a main bracket is arranged on the outer side of the transmission frame, the two connecting arms are located on the inner side of the main bracket, and the corners of the two connecting arms are respectively rotatably connected to the two ends of the main bracket;

[0010] A front support frame is welded in the middle of the bottom of the main support, and one end of the front support frame away from the main support is welded to the connecting seat.

[0011] As a further technical solution of the utility model, the two upper plywood and the two lower plywood are of the same shape and size, and the two upper plywood are fixedly connected to the two lower plywood by a plurality of connecting bolts; the sides of the upper plywood and the lower plywood close to the oil drum are both arc-shaped and provided with grooves.

[0012] As a further technical solution of the utility model, the top of one end of the two upper splints close to the main bracket and the bottom of one end of the two lower splints close to the main bracket are rotatably connected with auxiliary connecting rods, and the other ends of the multiple auxiliary connecting rods are respectively rotatably connected to the two sides of the main bracket.

[0013] As a further technical solution of the utility model, the end of the main bracket away from the oil barrel is welded to the middle of the connecting seat. The connecting seat is circular and a hydraulic cylinder is fixedly connected to the middle of the side of the connecting seat away from the main bracket; a circular hole is provided in the middle of the connecting seat for the hydraulic cylinder telescopic rod to pass through.

[0014] As a further technical solution of the utility model, the transmission frame is H-shaped, and the middle of the transmission frame is fixedly connected to the telescopic rod of the hydraulic cylinder.

[0015] As a further technical solution of the utility model, side plates are provided on both sides of the hydraulic cylinder, and a bottom plate is provided under the hydraulic cylinder; one end of the two side plates and the bottom plate are welded to the connecting seat, and the other end is fixedly connected to the AVG trolley.

[0016] As a further technical solution of the utility model, a rear support frame is welded to the bottom of the base plate, and the two side plates and the end of the hydraulic cylinder away from the connecting seat are fixedly connected to the connecting plate, and the rear support frame and the connecting plate are fixedly connected to the lifting platform by bolts, and the lifting platform is fixedly connected to the AVG trolley.

[0017] As a further technical solution of the utility model, the lifting platform is installed on the linear module lifting platform; a rotating bracket is installed on the lower end of the linear module lifting platform, and the rotating bracket is movably connected to the AVG trolley; and the AVG trolley is also movably connected to two electric push cylinders; the electric push cylinder is connected to the upper position on one side of the lifting platform through a fisheye joint.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. When the utility model is used, the AVG trolley is controlled to move to the oil drum, and then the hydraulic cylinder controls the transmission frame to move in the direction away from the connecting seat, and at the same time, the transmission frame drives the connecting arm to move through the transmission member, so that the connecting arm rotates with the connection with the main bracket as the center of the circle, and the connecting arm drives the upper and lower splints fixedly connected thereto to move when rotating, so that the two upper splints and the two lower splints are separated from each other, so as to give the oil drum enough space to enter between the two upper splints; the connecting arm plays the role of supporting the upper and lower splints, and at the same time can control the movement of the upper and lower splints, so that the hydraulic cylinder can drive the two upper and two lower splints to move synchronously;

[0020] 2. In the utility model, after the oil drum enters between the two upper clamping plates, the hydraulic cylinder controls the transmission frame to move in the opposite direction, and the transmission frame drives the two upper clamping plates and the two lower clamping plates to approach each other and clamp the oil drum through the transmission parts and the connecting arms; the two upper clamping plates and the two lower clamping plates are provided with arcuate surfaces, and when clamping the oil drum, the arcuate surfaces can increase the contact area between the upper clamping plates and the lower clamping plates and the oil drum, which can not only ensure the stability when clamping the oil drum, but also increase the force-bearing area of ​​the oil drum, thereby preventing the oil drum from being deformed or broken when being clamped, and ensuring the integrity of the oil drum; in addition, the arcuate surfaces of the upper clamping plates and the lower clamping plates are also provided with concave grooves, which can further increase the stability of the upper clamping plates and the lower clamping plates in supporting the oil drum; multiple auxiliary connecting rods support the upper clamping plates and the lower clamping plates without affecting the normal movement of the upper clamping plates and the lower clamping plates, thereby reducing the bearing pressure of the connecting arms and extending the service life of the connecting arms;

[0021] 3. In the utility model, the connecting plate serves to connect the lifting platform, the side plates and the bottom plate; the rear supporting frame serves to support the bottom plate and cooperates with the bottom plate to ensure the stability of the connecting seat; the front supporting frame serves to support the main support and can prevent the main support from breaking when clamping the oil drum, especially the fully loaded oil drum; at the same time, the multiple side plates and the bottom plate are in a herringbone shape as a whole; the hydraulic cylinder is located between the multiple side plates and the bottom plate; the multiple side plates and the bottom plate serve to protect the hydraulic cylinder; at the same time, when the hydraulic cylinder is operating, the multiple side plates and the bottom plate can also prevent the staff from contacting the hydraulic cylinder, thereby protecting the personal safety of the hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0023] Figure 2 This utility model Figure 1 Side view of.

[0024] Figure 3 This utility model Figure 1 Schematic diagram of part of the structure.

[0025] Figure 4 This utility model Figure 3 Bottom view of .

[0026] Figure 5 This utility model Figure 3 Schematic diagram of part of the structure.

[0027] Figure 6 This utility model Figure 5 Top view of the .

[0028] Figure 7 This utility model Figure 5 Another perspective of the picture.

[0029] Figure 8 This utility model Figure 5 Side view of.

[0030] In the figure: 1-upper splint, 2-lower splint, 3-connecting bolt, 4-connecting arm, 5-auxiliary connecting rod, 6-main bracket, 7-transmission frame, 8-transmission part, 9-connecting seat, 10-hydraulic cylinder, 11-side plate, 12-bottom plate, 13-oil drum, 14-front support frame, 15-connecting plate, 16-rear support frame, 17-lifting platform, 18-AVG trolley, 19-linear module lifting platform, 20-electric push cylinder, 21-rotating bracket. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figure 1-8In the embodiment of the utility model, an oil barrel handling, clamping and fixing mechanism for an AVG trolley comprises an upper clamping plate 1 and a connecting arm 4, two upper clamping plates 1 for clamping an oil barrel 13 are provided, and the two upper clamping plates 1 are respectively located on both sides of the oil barrel 13; a lower clamping plate 2 is provided below the two upper clamping plates 1; the two upper clamping plates 1 and the two lower clamping plates 2 are provided with arcuate surfaces, and the arcuate surfaces of the upper clamping plates 1 and the lower clamping plates 2 are also provided with concave patterns;

[0033] Two L-shaped connecting arms 4 are provided, and one end of the connecting arm 4 is located between the upper plywood 1 and the lower plywood 2; the top of the connecting arm 4 is fixedly connected to a bottom corner of the upper plywood 1 by bolts, and the bottom is fixedly connected to a top corner of the lower plywood 2;

[0034] The ends of the two connecting arms 4 away from the upper plywood 1 are fixedly connected to the transmission members 8, and the ends of the two transmission members 8 away from the connecting arms 4 are respectively fixedly connected to the two ends of the transmission frame 7; the outer side of the transmission frame 7 is provided with a main bracket 6, the two connecting arms 4 are both located on the inner side of the main bracket 6, and the two connecting arms 4 are rotatably connected to the two ends of the main bracket 6 at the corners;

[0035] A front support frame 14 is welded to the middle of the bottom of the main support 6 , and one end of the front support frame 14 away from the main support 6 is welded to the connecting seat 9 .

[0036] By adopting the above technical solution, when in use, the AVG trolley is controlled to move to the oil drum 13, and then the hydraulic cylinder 10 controls the transmission frame 7 to move in the direction away from the connecting seat 9. At the same time, the transmission frame 7 drives the connecting arm 4 to move through the transmission member 8, so that the connecting arm 4 rotates with the connection with the main bracket 6 as the center of the circle. When the connecting arm 4 rotates, it drives the upper splint 1 and the lower splint 2 fixedly connected thereto to move, so that the two upper splints 1 and the two lower splints 2 are away from each other, so as to give the oil drum 13 enough space to enter between the two upper splints 1; the connecting arm 4 not only plays the role of supporting the upper splint 1 and the lower splint 2, but also can control the movement of the upper splint 1 and the lower splint 2, so that the hydraulic cylinder 10 can drive the two upper splints 1 and the two lower splints 2 to move synchronously.

[0037] In this embodiment, the two upper plywood plates 1 and the two lower plywood plates 2 have the same shape and size, and the two upper plywood plates 1 are fixedly connected to the two lower plywood plates 2 by a plurality of connecting bolts 3; the upper plywood plates 1 and the lower plywood plates 2 are both arc-shaped and provided with concave patterns on one side close to the oil barrel 13;

[0038] The top of one end of the two upper plywoods 1 close to the main bracket 6 and the bottom of one end of the two lower plywoods 2 close to the main bracket 6 are both rotatably connected with auxiliary connecting rods 5, and the other ends of the multiple auxiliary connecting rods 5 are rotatably connected to the two sides of the main bracket 6 respectively.

[0039] By adopting the above technical solution, after the oil barrel 13 enters between the two upper clamping plates 1, the hydraulic cylinder 10 controls the transmission frame 7 to move in the opposite direction, and the transmission frame 7 drives the two upper clamping plates 1 and the two lower clamping plates 2 to approach each other and clamp the oil barrel 13 through the transmission member 8 and the connecting arm 4; the two upper clamping plates 1 and the two lower clamping plates 2 are provided with arcuate surfaces, and when clamping the oil barrel 13, the arcuate surfaces can increase the contact area between the upper clamping plates 1 and the lower clamping plates 2 and the oil barrel 13, which can not only ensure the stability when clamping the oil barrel 13, but also It can increase the force-bearing area of ​​the oil barrel 13, thereby preventing the oil barrel 13 from being deformed or broken when being clamped, and ensuring the integrity of the oil barrel 13; in addition, the arcuate surfaces of the upper splint 1 and the lower splint 2 are also provided with grooves, which can further increase the stability of the upper splint 1 and the lower splint 2 in supporting the oil barrel 13; multiple auxiliary connecting rods 5 support the upper splint 1 and the lower splint 2 without affecting the normal movement of the upper splint 1 and the lower splint 2, reduce the bearing pressure of the connecting arm 4, and extend the service life of the connecting arm 4.

[0040] In this embodiment, the end of the main support 6 away from the oil barrel 13 is welded to the middle of the connecting seat 9, the connecting seat 9 is circular and a hydraulic cylinder 10 is fixedly connected to the middle of the side of the connecting seat 9 away from the main support 6; a circular hole is provided in the middle of the connecting seat 9 for the telescopic rod of the hydraulic cylinder 10 to pass through;

[0041] The transmission frame 7 is H-shaped, and the middle of the transmission frame 7 is fixedly connected to the telescopic rod of the hydraulic cylinder 10;

[0042] The hydraulic cylinder 10 is provided with side plates 11 on both sides, and a bottom plate 12 is provided under the hydraulic cylinder 10; one end of the two side plates 11 and the bottom plate 12 are welded to the connecting seat 9, and the other end is fixedly connected to the AVG trolley;

[0043] A rear support frame 16 is welded to the bottom of the base plate 12, and the two side plates 11 and the end of the hydraulic cylinder 10 away from the connecting seat 9 are fixedly connected to the connecting plate 15. The rear support frame 16 and the connecting plate 15 are fixedly connected to the lifting platform 17 by bolts, and the lifting platform 17 is fixedly connected to the AVG trolley 18.

[0044] By adopting the above technical scheme, the connecting plate 15 serves to connect the lifting platform 17, the side plate 11 and the bottom plate 12, the rear support frame 16 serves to support the bottom plate 12, and cooperates with the bottom plate 12 to ensure the stability of the connecting seat 9; the front support frame 14 serves to support the main support 6, and can prevent the main support 6 from breaking when clamping the oil barrel 13, especially a fully loaded oil barrel. At the same time, the multiple side plates 11 and the bottom plate 12 are in a herringbone shape as a whole, and the hydraulic cylinder 10 is located between the multiple side plates 11 and the bottom plate 12. The multiple side plates 11 and the bottom plate 12 serve to protect the hydraulic cylinder 10. At the same time, when the hydraulic cylinder 10 is operating, the multiple side plates 11 and the bottom plate 12 can also prevent the staff from contacting the hydraulic cylinder 10, thereby protecting the personal safety of the hydraulic cylinder 10.

[0045] In this embodiment, the lifting platform 17 is installed on the linear module lifting platform 19; the lower end of the linear module lifting platform 19 is installed with a rotating bracket 21, and the rotating bracket 21 is movably connected to the AVG trolley 18; and the AVG trolley 18 is also movably connected with two electric push cylinders 20; the electric push cylinders 20 are connected to the upper side of the lifting platform 17 through a fisheye joint.

[0046] By adopting the above technical solution, the electric push cylinder 20 can drive the linear module lifting platform 19 to flip around the rotating bracket 21, thereby adjusting the inclination angle of the linear module lifting platform 19 to position and place the oil drum.

[0047] The working principle of the utility model is as follows: when in use, the AVG trolley is controlled to move to the oil barrel 13, and then the hydraulic cylinder 10 controls the transmission frame 7 to move in the direction away from the connecting seat 9, and at the same time, the transmission frame 7 drives the connecting arm 4 to move through the transmission member 8, so that the connecting arm 4 rotates with the connection with the main bracket 6 as the center of the circle, and the connecting arm 4 drives the upper splint 1 and the lower splint 2 fixedly connected thereto to move when rotating, so that the two upper splints 1 and the two lower splints 2 are moved away from each other, so as to give the oil barrel 13 enough space to enter between the two upper splints 1; the connecting arm 4 plays the role of supporting the upper splint 1 and the lower splint 2, and can control the movement of the upper splint 1 and the lower splint 2, so that the hydraulic cylinder 10 can drive the two upper splints 1 and the two lower splints 2 to move synchronously;

[0048] After the oil barrel 13 enters between the two upper clamping plates 1, the hydraulic cylinder 10 controls the transmission frame 7 to move in the opposite direction, and the transmission frame 7 drives the two upper clamping plates 1 and the two lower clamping plates 2 to approach each other and clamp the oil barrel 13 through the transmission member 8 and the connecting arm 4; the two upper clamping plates 1 and the two lower clamping plates 2 are provided with arc surfaces, and when clamping the oil barrel 13, the arc surfaces can increase the contact area between the upper clamping plates 1 and the lower clamping plates 2 and the oil barrel 13, which can not only ensure the stability when clamping the oil barrel 13, but also increase the oil The force-bearing area of ​​the barrel 13 is reduced, thereby preventing the oil barrel 13 from being deformed or broken when being clamped, and ensuring the integrity of the oil barrel 13; in addition, the arc-shaped surfaces of the upper clamping plate 1 and the lower clamping plate 2 are also provided with concave patterns, which can further increase the stability of the upper clamping plate 1 and the lower clamping plate 2 in supporting the oil barrel 13; multiple auxiliary connecting rods 5 support the upper clamping plate 1 and the lower clamping plate 2 without affecting the normal movement of the upper clamping plate 1 and the lower clamping plate 2, reduce the bearing pressure of the connecting arm 4, and extend the service life of the connecting arm 4;

[0049] The connecting plate 15 serves to connect the lifting platform 17, the side plates 11 and the bottom plate 12; the rear support frame 16 serves to support the bottom plate 12 and cooperates with the bottom plate 12 to ensure the stability of the connecting seat 9; the front support frame 14 serves to support the main support 6, and can prevent the main support 6 from breaking when clamping the oil drum 13, especially a fully loaded oil drum. At the same time, the multiple side plates 11 and the bottom plate 12 are in a herringbone shape as a whole, and the hydraulic cylinder 10 is located between the multiple side plates 11 and the bottom plate 12. The multiple side plates 11 and the bottom plate 12 serve to protect the hydraulic cylinder 10. At the same time, when the hydraulic cylinder 10 is operating, the multiple side plates 11 and the bottom plate 12 can also prevent the staff from contacting the hydraulic cylinder 10, thereby protecting the personal safety of the hydraulic cylinder 10.

[0050] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An oil drum handling, clamping and fixing mechanism for an AVG trolley, characterized in that: include Two upper clamping plates (1) are provided for clamping the oil drum (13); a lower clamping plate (2) is provided below each of the two upper clamping plates (1); the two upper clamping plates (1) and the two lower clamping plates (2) are provided with arc-shaped surfaces, and the arc-shaped surfaces of the upper clamping plates (1) and the lower clamping plates (2) are also provided with concave patterns; The connecting arm (4) is provided with two L-shaped connecting arms (4); the top of the connecting arm (4) is fixedly connected to a bottom corner of the upper clamping plate (1) by means of bolts, and the bottom is fixedly connected to a top corner of the lower clamping plate (2); The ends of the two connecting arms (4) away from the upper clamping plate (1) are fixedly connected to a transmission member (8), and the ends of the two transmission members (8) away from the connecting arms (4) are respectively fixedly connected to the two ends of the transmission frame (7); a main bracket (6) is arranged on the outer side of the transmission frame (7), the two connecting arms (4) are both located on the inner side of the main bracket (6), and the two connecting arms (4) are respectively rotatably connected to the two ends of the main bracket (6) at the corners; A front support frame (14) is welded in the middle of the bottom of the main support frame (6), and one end of the front support frame (14) away from the main support frame (6) is welded to the connecting seat (9).

2. The oil drum handling, clamping and fixing mechanism for an AVG trolley according to claim 1 is characterized in that: The two upper plywood plates (1) and the two lower plywood plates (2) are of the same shape and size, and the two upper plywood plates (1) are fixedly connected to the two lower plywood plates (2) via a plurality of connecting bolts (3).

3. The oil drum handling, clamping and fixing mechanism for an AVG trolley according to claim 2 is characterized in that: The top of one end of the two upper plywood (1) close to the main bracket (6) and the bottom of one end of the two lower plywood (2) close to the main bracket (6) are both rotatably connected to auxiliary connecting rods (5), and the other ends of the multiple auxiliary connecting rods (5) are respectively rotatably connected to the two sides of the main bracket (6).

4. The oil drum handling, clamping and fixing mechanism for an AVG trolley according to claim 3 is characterized in that: The end of the main support (6) away from the oil barrel (13) is welded to the middle of the connecting seat (9); the connecting seat (9) is circular and a hydraulic cylinder (10) is fixedly connected to the middle of the side of the connecting seat (9) away from the main support (6).

5. The oil drum handling, clamping and fixing mechanism for an AVG trolley according to claim 4 is characterized in that: The transmission frame (7) is H-shaped, and the middle of the transmission frame (7) is fixedly connected to the telescopic rod of the hydraulic cylinder (10).

6. The oil drum handling, clamping and fixing mechanism for an AVG trolley according to claim 5 is characterized in that: Side plates (11) are provided on both sides of the hydraulic cylinder (10), and a bottom plate (12) is provided below the hydraulic cylinder (10); one end of the two side plates (11) and the bottom plate (12) are welded to the connecting seat (9).

7. The oil drum handling, clamping and fixing mechanism for an AVG trolley according to claim 6 is characterized in that: A rear support frame (16) is welded to the bottom of the base plate (12); the two side plates (11) and one end of the hydraulic cylinder (10) away from the connecting seat (9) are fixedly connected to the connecting plate (15); the rear support frame (16) and the connecting plate (15) are fixedly connected to the lifting platform (17) by bolts; and the lifting platform (17) is fixedly connected to the AVG trolley (18).

8. The oil drum handling, clamping and fixing mechanism for an AVG trolley according to claim 7 is characterized in that: The lifting platform (17) is installed on the linear module lifting platform (19); the lower end of the linear module lifting platform (19) is installed with a rotating bracket (21), and the rotating bracket (21) is movably connected to the AVG trolley (18); and the AVG trolley (18) is also movably connected to two electric push cylinders (20); the electric push cylinder (20) is connected to the upper side of the lifting platform (17) through a fisheye joint.

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