White-strip pig loading and unloading arm

Abstract

The utility model relates to the technical field of white pig loading and unloading, and particularly discloses a white pig loading and unloading arm which comprises a base and two fork supports, the upper end of the base is fixedly connected with two vertical plates distributed front and back, a first mechanical arm is rotationally connected between the two vertical plates through a movable shaft, and the right end of the first mechanical arm is fixedly connected with an installation frame. A second mechanical arm is rotationally connected into the mounting frame through a rotating shaft, and a rotating disc is rotationally connected to the upper end of the second mechanical arm. The two adjusting plates are driven to move face to face or back to back, so that the transverse distance between the two U-shaped frames is changed, namely the horizontal distance between the two fork supports is adjusted, the locking state of the movable column is relieved, the fork supports rotate along with the movable column till the angle and the distance of the fork supports are both matched with the body type of the white pig, and then the movable angle of the movable column is locked. At the moment, the angle and the distance between the two fork supports are in a proper state, so that the fork support can adapt to the white-strip pigs of different body types and varieties according to needs, and the risk that the white-strip pigs slide down in the loading and unloading process is remarkably reduced.

Description

Technical Field

[0001] This utility model relates to the field of pork carcass loading and unloading technology, and specifically discloses a pork carcass loading and unloading arm. Background Technology

[0002] In the meat processing and cold chain transportation sector, pork carcasses, as an important fresh product, typically require the efficient and stable lifting and transport of equipment such as loading booms to quickly transfer them into refrigerated trucks or cold chain vehicles. This operation can significantly reduce the labor intensity of manual handling.

[0003] Chinese Patent No. CN209338007U discloses a loading and unloading arm for pork or beef carcasses. This arm can stably and easily lift the carcasses using forks, and after rotation and lifting, hang them into a refrigerated truck or cold chain vehicle. Before fixing the base, the two extreme angles of the rotating disc are set in opposite directions of the pork carcass transfer. Then, the base is fixed, and the loading and unloading arm is operated to load and unload the carcasses. This loading and unloading arm for pork or beef carcasses saves time and reduces labor, and features extremely low noise, stable performance, and convenient maintenance.

[0004] The fork support in the aforementioned patent uses a one-piece structural design with fixed angles and spacing. However, there are significant individual differences among pork carcasses of different sizes and breeds. The fixed structure of the fork support is difficult to adapt to diverse actual needs. When the fork support cannot match individual differences, it can easily lead to insufficient support stability, increasing the risk of pork carcasses slipping during loading and unloading. Therefore, a pork carcass loading and unloading arm is needed to solve the above problems. Utility Model Content

[0005] This invention proposes a loading and unloading arm for pork carcasses, which allows for easy adjustment of the distance and angle between the two forks, thus adapting to different sizes and breeds of pork carcasses as needed, and significantly reducing the risk of pork carcasses slipping during loading and unloading.

[0006] This utility model is implemented as follows: a loading and unloading arm for pork carcasses includes a base and two fork supports. The upper end of the base is fixedly connected to two upright plates distributed front and rear. A first mechanical arm is rotatably connected between the two upright plates via a movable shaft. A mounting frame is fixedly connected to the right end of the first mechanical arm. A second mechanical arm is rotatably connected inside the mounting frame via a rotating shaft. A turntable is rotatably connected to the upper end of the second mechanical arm.

[0007] The upper end of the turntable is fixedly connected to a frame with an open structure on the right end. A two-way lead screw is rotatably connected inside the frame. Two adjusting plates are threaded to the outer wall of the two-way lead screw. A drive mechanism is provided on the front side of the two-way lead screw.

[0008] Both adjustment plates are fixedly connected to a U-shaped frame at their right ends. Both U-shaped frames are rotatably connected to a movable column inside. The two fork supports are fixedly connected to the outer walls of the two movable columns respectively. Both movable columns are provided with a locking mechanism on their upper sides.

[0009] As a preferred embodiment of the present invention for loading and unloading pork carcasses, the driving mechanism includes a driving frame fixedly connected to the front end of the frame body, a worm gear rotatably connected inside the driving frame, a worm wheel meshing with the outer wall of the worm gear, a transmission shaft fixedly connected between the worm wheel and a two-way lead screw, and a torsion column extending to the outside of the driving frame fixedly connected to the left end of the worm gear, with an internal hexagonal hole at the left end of the torsion column.

[0010] As a preferred embodiment of the present invention for loading and unloading pork carcasses, the locking mechanism includes a co-moving column fixedly connected to the upper end of the movable column and penetrating through the U-shaped frame. A disc is fixedly connected to the upper end of the co-moving column. A limiting ring located outside the co-moving column is fixedly connected to the upper end of the U-shaped frame. The upper end of the limiting ring has multiple limiting holes arranged in a circumferential array. A matching limiting column is inserted into the interior of each of the two limiting holes. Two through holes are opened through the upper end of the disc. A steel column passing through the two through holes is fixedly connected to the upper end of each of the two limiting columns. A hexagonal torsion block is fixedly connected to the upper end of each of the two steel columns. Two annular threaded grooves are opened at the upper end of the disc. An external threaded cover is threadedly connected to the interior of each of the two annular threaded grooves. The two external threaded covers are fixedly connected to the outer walls of the two steel columns respectively.

[0011] As a preferred embodiment of the present invention for loading and unloading pork carcasses, a hydraulic cylinder is rotatably connected between the two upright plates via a connecting shaft, and the output end of the hydraulic cylinder is movably connected to the lower end of the first robotic arm via a hinge.

[0012] As a preferred embodiment of the present invention for loading and unloading pork carcasses, the two adjusting plates are slidably connected to the inside of the frame via two sliding grooves.

[0013] As a preferred embodiment of the present invention for loading and unloading pork carcasses, the left end of the drive frame is fixedly connected to an anti-touch cylinder located outside the torsion column.

[0014] As a preferred embodiment of the present invention for loading and unloading pork carcasses, the lower end of the second robotic arm and the upper end of the frame are both fixedly connected with handles.

[0015] The beneficial effects of this utility model are:

[0016] By rotating the two-way lead screw in both directions, the two adjusting plates move towards or away from each other, thereby changing the lateral distance between the two U-shaped frames. This allows for adjustment of the horizontal distance between the two fork supports, releasing the locking state of the movable column, and allowing the fork supports to rotate with the movable column until the angle and distance of the fork supports are adapted to the body shape of the pork carcass. Then, the movable angle of the movable column is locked. At this point, the angle and distance of the two fork supports are in a suitable state, thus adapting to pork carcasses of different body shapes and breeds as needed, significantly reducing the risk of pork carcasses slipping during loading and unloading. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a front sectional view of the overall design of a pork carcass loading and unloading arm according to this utility model.

[0019] Figure 2 This is a partial top sectional view of the present invention;

[0020] Figure 3 This is a partial front cross-sectional view of the present invention;

[0021] Figure 4 This is a diagram showing the external structure of the limiting ring of this utility model;

[0022] Figure 5 This is a diagram of the external connection structure at the limiting post of this utility model.

[0023] The markings in the diagram are: 1. Base; 2. Vertical plate; 3. Movable shaft; 4. First robotic arm; 5. Connecting shaft; 6. Hydraulic cylinder; 7. Mounting bracket; 8. Rotating shaft; 9. Second robotic arm; 10. Turntable; 11. Frame; 12. Two-way lead screw; 13. Adjusting plate; 14. Fork support; 15. Drive frame; 16. Worm gear; 17. Worm wheel; 18. Anti-collision cylinder; 19. Torsion column; 20. Hexagonal hole; 21. U-shaped frame; 22. Movable column; 23. Limiting ring; 24. Co-moving column; 25. Disc; 26. Limiting hole; 27. Limiting column; 28. Steel column; 29. ​​Hexagonal torsion block; 30. Annular threaded groove; 31. External threaded cover. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0025] Please see Figure 1-5 A loading and unloading arm for pork carcasses includes a base 1 and two fork supports 14. The upper end of the base 1 is fixedly connected to two upright plates 2 distributed front and rear. The two upright plates 2 are rotatably connected to a first mechanical arm 4 via a movable shaft 3. The right end of the first mechanical arm 4 is fixedly connected to a mounting frame 7. The inside of the mounting frame 7 is rotatably connected to a second mechanical arm 9 via a rotating shaft 8. The upper end of the second mechanical arm 9 is rotatably connected to a turntable 10.

[0026] The upper end of the turntable 10 is fixedly connected to a frame 11 with an open structure on the right end. A two-way lead screw 12 is rotatably connected inside the frame 11. Two adjusting plates 13 are threadedly connected to the outer wall of the two-way lead screw 12. A drive mechanism is provided on the front side of the two-way lead screw 12.

[0027] U-shaped frames 21 are fixedly connected to the right ends of the two adjusting plates 13. Movable columns 22 are rotatably connected inside the two U-shaped frames 21. Two fork supports 14 are fixedly connected to the outer walls of the two movable columns 22 respectively. Locking mechanisms are provided on the upper side of the two movable columns 22.

[0028] In this embodiment: the driving mechanism drives the bidirectional lead screw 12 inside the frame 11 to rotate in the forward or reverse direction. The two reverse threads on the outer wall of the bidirectional lead screw 12 drive the two adjusting plates 13 to slide towards or away from each other, thereby changing the lateral distance between the two U-shaped frames 21, that is, realizing the adjustment of the horizontal distance between the two fork supports 14.

[0029] The locking mechanism then releases the locking of the movable column 22. The fork support 14 is then manually rotated, causing the movable column 22 to rotate until the angle and spacing of the fork support 14 are adapted to the size of the pork carcass. The locking mechanism then locks the movable column 22, thus locking the angle of the fork support 14. After the operation is completed, the angle and spacing of the two fork supports 14 are in a suitable state, which can adapt to pork carcasses of different sizes and breeds as needed, significantly reducing the risk of pork carcasses slipping during loading and unloading.

[0030] When in use, the hydraulic cylinder 6 is activated, and its output end pushes the first robotic arm 4 to rotate around the movable shaft 3 through the hinge seat, thereby raising and lowering the overall height of the two fork supports 14. The second robotic arm 9 rotates through the rotating shaft 8, and in conjunction with the rotation of the turntable 10, it lifts the pork carcass through the fork supports 14. This achieves efficient and stable lifting of the pork carcass, quickly transferring it to a cold chain truck or refrigerated truck, significantly reducing the labor intensity of manual handling.

[0031] As a technical optimization of this utility model, the driving mechanism includes a driving frame 15 fixedly connected to the front end of the frame 11. A worm gear 16 is rotatably connected inside the driving frame 15. A worm wheel 17 is meshed with the outer wall of the worm gear 16. A transmission shaft is fixedly connected between the worm wheel 17 and the bidirectional lead screw 12. A torsion column 19 extending to the outside of the driving frame 15 is fixedly connected to the left end of the worm gear 16. An internal hexagonal hole 20 is opened at the left end of the torsion column 19.

[0032] In this embodiment: the operator first inserts an Allen wrench into the Allen hole 20 at the left end of the torsion post 19 and rotates the torsion post 19 in the forward or reverse direction, causing the worm 16 in the drive frame 15 to rotate synchronously. The worm 16 meshes with the worm wheel 17, transmitting the rotational motion to the transmission shaft fixedly connected to the worm wheel 17, thereby driving the bidirectional lead screw 12 in the frame 11 to rotate. Due to the self-locking characteristic of the worm wheel 17 and worm 16 mechanism, the bidirectional lead screw 12 can be prevented from rotating on its own, ensuring the stability of the adjusted spacing.

[0033] As a technical optimization of this utility model, the locking mechanism includes a co-moving column 24 fixedly connected to the upper end of the movable column 22 and passing through the U-shaped frame 21. A disc 25 is fixedly connected to the upper end of the co-moving column 24. A limiting ring 23 located outside the co-moving column 24 is fixedly connected to the upper end of the U-shaped frame 21. A plurality of limiting holes 26 distributed in a circumferential array are opened at the upper end of the limiting ring 23. A matching limiting column 27 is inserted into the interior of each of the two limiting holes 26. Two through holes are opened through the upper end of the disc 25. A steel column 28 passing through the two through holes is fixedly connected to the upper end of each of the two limiting columns 27. A hexagonal torsion block 29 is fixedly connected to the upper end of each of the two steel columns 28. Two annular threaded grooves 30 are opened at the upper end of the disc 25. An external threaded cover 31 is threadedly connected to the interior of each of the two annular threaded grooves 30. The two external threaded covers 31 are fixedly connected to the outer walls of the two steel columns 28 respectively.

[0034] In this embodiment: when the locking state of the movable column 22 is to be released, the operator rotates the two hexagonal torsion blocks 29 with a wrench, thereby driving the steel column 28 and the limiting column 27 to rotate, and at the same time rotating the external thread cover 31 to disengage it from the annular thread groove 30 at the upper end of the disc 25. At this time, the limiting column 27 and the limiting hole 26 of the limiting ring 23 are unlocked, and the movable column 22 can rotate freely.

[0035] When locking the movable column 22, make the threaded connection of the external threaded cover 31 and the annular threaded groove 30 align, and then use a wrench to rotate the two hexagonal torsion blocks 29 in the opposite direction to make the external threaded cover 31 engage with the annular threaded groove 30. The limiting column 27 will enter the corresponding limiting hole 26 until the steel column 28 and the upper end of the limiting ring 23 are tightly abutted, preventing the disc 25 from rotating relative to the limiting ring 23, thus completing the locking of the movable column 22 angle.

[0036] As a technical optimization of this utility model, a hydraulic cylinder 6 is rotatably connected between the two upright plates 2 via a connecting shaft 5, and the output end of the hydraulic cylinder 6 is movably connected to the lower end of the first robotic arm 4 via a hinge.

[0037] In this embodiment: the hydraulic cylinder 6 is installed between the vertical plates 2 via the connecting shaft 5, and its output end pushes the first mechanical arm 4 to rotate around the movable shaft 3 through the hinge seat, thereby realizing the lifting and lowering of the height of the two fork supports 14.

[0038] As a technical optimization of this utility model, the two adjustment plates 13 are slidably connected to the inside of the frame 11 through two sliding grooves.

[0039] In this embodiment, the protruding structure at the bottom of the adjustment plate 13 is embedded in the sliding groove inside the frame 11. When the bidirectional lead screw 12 drives the adjustment plate 13 to move, the sliding groove restricts it to slide only in the horizontal direction to avoid deviation or jamming.

[0040] As a technical optimization of this utility model, the left end of the drive frame 15 is fixedly connected to an anti-touch cylinder 18 located outside the torsion column 19.

[0041] In this embodiment, the anti-touch cylinder 18 is provided to prevent accidental rotation of the torsion column 19.

[0042] As a technical optimization of this utility model, the lower end of the second robotic arm 9 and the upper end of the frame 11 are both fixedly connected with handles.

[0043] In this embodiment: the operator can manually fine-tune the pitch angle of the robotic arm by holding the handle at the lower end of the second robotic arm 9; by holding the handle at the upper end of the frame 11, the operator can push the turntable 10 to rotate and adjust the horizontal orientation of the fork support 14.

[0044] The working principle and usage process of this utility model are as follows: The operator first inserts an Allen wrench into the Allen hole 20 at the left end of the torsion column 19 and rotates the torsion column 19 in the forward or reverse direction, which drives the worm 16 in the drive frame 15 to rotate synchronously. The worm 16 meshes with the worm wheel 17 and transmits the rotational motion to the transmission shaft fixedly connected to the worm wheel 17, thereby driving the bidirectional lead screw 12 in the frame 11 to rotate. The two reverse threads on the outer wall of the bidirectional lead screw 12 drive the two adjusting plates 13 to slide in opposite directions along the sliding groove inside the frame 11, thereby changing the lateral distance between the two U-shaped frames 21, that is, realizing the adjustment of the horizontal distance between the two fork supports 14. After stopping the rotation of the torsion column 19, the self-locking characteristic of the worm wheel 17 and worm 16 mechanism can prevent the bidirectional lead screw 12 from rotating on its own, ensuring the stability of the adjusted distance. When the Allen wrench is removed, the design of the anti-touch cylinder 18 can prevent accidental rotation of the torsion column 19.

[0045] When the locking state of the movable column 22 is to be released, the operator turns the two hexagonal torsion blocks 29 with a wrench, which in turn drives the steel column 28 and the limiting column 27 to rotate. At the same time, the external thread cover 31 is rotated to disengage it from the annular thread groove 30 at the upper end of the disc 25. At this time, the limiting column 27 is unlocked from the limiting hole 26 of the limiting ring 23, and the movable column 22 can rotate freely.

[0046] Then manually rotate the fork support 14, which drives the movable column 22 and the synchronous column 24 to rotate. The disc 25 at the upper end of the synchronous column 24 rotates accordingly until the angle and spacing of the fork support 14 are adapted to the body shape of the white carcass pig.

[0047] When locking the movable column 22, make the threaded connection of the external threaded cover 31 and the annular threaded groove 30 align, and then turn the two hexagonal torsion blocks 29 in the opposite direction with a wrench to make the external threaded cover 31 engage with the annular threaded groove 30. The limiting column 27 will enter the corresponding limiting hole 26 until the steel column 28 and the upper end of the limiting ring 23 are tightly abutted, preventing the disc 25 from rotating relative to the limiting ring 23, thus completing the locking of the fork support 14 angle.

[0048] After the operation is completed, the angle and spacing of the two fork supports 14 are in a suitable state, so as to adapt to different sizes and breeds of pork carcasses as needed, significantly reducing the risk of pork carcasses slipping during loading and unloading;

[0049] When in use, the hydraulic cylinder 6 is activated, and its output end pushes the first robotic arm 4 to rotate around the movable shaft 3 through the hinge seat, thereby raising and lowering the overall height of the two fork supports 14. The second robotic arm 9 rotates through the rotating shaft 8, and in conjunction with the rotation of the turntable 10, it lifts the pork carcass through the fork supports 14. This achieves efficient and stable lifting of the pork carcass, quickly transferring it to a cold chain truck or refrigerated truck, significantly reducing the labor intensity of manual handling.

[0050] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0051] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A loading arm for pork carcasses, comprising a base (1) and two fork supports (14), characterized in that: The upper end of the base (1) is fixedly connected to two upright plates (2) distributed in front and behind. The two upright plates (2) are rotatably connected to a first mechanical arm (4) through a movable shaft (3). The right end of the first mechanical arm (4) is fixedly connected to a mounting frame (7). The inside of the mounting frame (7) is rotatably connected to a second mechanical arm (9) through a rotating shaft (8). The upper end of the second mechanical arm (9) is rotatably connected to a turntable (10). The upper end of the turntable (10) is fixedly connected to a frame (11) with an open structure on the right end. A two-way lead screw (12) is rotatably connected inside the frame (11). Two adjusting plates (13) are threadedly connected to the outer wall of the two-way lead screw (12). A driving mechanism is provided on the front side of the two-way lead screw (12). The right ends of the two adjustment plates (13) are fixedly connected to U-shaped frames (21), and the interiors of the two U-shaped frames (21) are rotatably connected to movable columns (22). The two fork supports (14) are fixedly connected to the outer walls of the two movable columns (22), and the upper sides of the two movable columns (22) are provided with locking mechanisms.

2. The loading and unloading arm for pork carcasses according to claim 1, characterized in that: The driving mechanism includes a driving frame (15) fixedly connected to the front end of the frame (11). A worm (16) is rotatably connected inside the driving frame (15). A worm wheel (17) is meshed with the outer wall of the worm (16). A transmission shaft is fixedly connected between the worm wheel (17) and the double-acting screw (12). A torsion column (19) extending to the outside of the driving frame (15) is fixedly connected to the left end of the worm (16). An internal hexagonal hole (20) is opened at the left end of the torsion column (19).

3. The loading and unloading arm for pork carcasses according to claim 1, characterized in that: The locking mechanism includes a co-moving column (24) fixedly connected to the upper end of the movable column (22) and passing through the U-shaped frame (21). A disc (25) is fixedly connected to the upper end of the co-moving column (24). A limiting ring (23) located outside the co-moving column (24) is fixedly connected to the upper end of the U-shaped frame (21). The upper end of the limiting ring (23) has multiple limiting holes (26) arranged in a circumferential array. A matching limiting column (27) is inserted into the interior of each of the two limiting holes (26). Two through holes are opened at the upper end of (25). The upper ends of the two limiting posts (27) are fixedly connected to steel posts (28) that pass through the two through holes respectively. The upper ends of the two steel posts (28) are fixedly connected to hexagonal torsion blocks (29). The upper end of the disc (25) has two annular threaded grooves (30). The interior of the two annular threaded grooves (30) is threaded with an external threaded cover (31). The two external threaded covers (31) are fixedly connected to the outer walls of the two steel posts (28) respectively.

4. The loading and unloading arm for pork carcasses according to claim 1, characterized in that: A hydraulic cylinder (6) is rotatably connected between the two upright plates (2) via a connecting shaft (5), and the output end of the hydraulic cylinder (6) is movably connected to the lower end of the first robotic arm (4) via a hinge.

5. A loading and unloading arm for pork carcasses according to claim 1, characterized in that: The two adjustment plates (13) are slidably connected to the inside of the frame (11) via two slide grooves.

6. A loading and unloading arm for pork carcasses according to claim 2, characterized in that: The left end of the drive frame (15) is fixedly connected to an anti-touch cylinder (18) located outside the torsion column (19).

7. A loading and unloading arm for pork carcasses according to claim 1, characterized in that: The lower end of the second robotic arm (9) and the upper end of the frame (11) are both fixedly connected with handles.

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