A load-bearing robotic dog device

Abstract

This invention relates to the field of mechanical dog technology, specifically to a heavy-duty mechanical dog device. The device includes a body of the mechanical dog, with two movable legs movably connected to the outer walls of both sides of the body. A load-bearing component is provided on the top outer wall of the body, and the load-bearing component includes two fixed seats, which are fixedly connected to the body. The fixed seats have a U-shaped structure, and each fixed seat has a mounting seat bolted to its top outer wall. The mounting seat has a T-shaped cross-section, and each mounting seat has a connecting groove on its top outer wall. This invention overcomes the shortcomings of the prior art. By providing a load-bearing component on the body of the mechanical dog, the load-bearing box within the component facilitates the storage of items. The enclosed load-bearing box protects the items, preventing them from falling during the mechanical dog's movement. The cooperation between the connecting seats and mounting seats on the auxiliary component allows for the quick and easy installation of the auxiliary mechanism onto the mechanical dog.

Description

Technical Field

[0001] This invention relates to the field of mechanical dog technology, specifically a heavy-duty mechanical dog device. Background Technology

[0002] Robot dogs are quadruped robots, a type of legged robot. They resemble quadrupeds in appearance, can walk autonomously, and possess biological-like attributes. They can traverse different geographical environments, perform a variety of complex movements, and, with the help of leg motion controllers, can cross extreme environments that are inaccessible to humans. They are considered to be the most advanced robots in the world that can adapt to rugged terrain. With the help of their special limb movements, robot dogs can move in uneven and complex terrain, making them very suitable for transporting goods within a local area in disaster relief and rescue scenarios.

[0003] A search revealed a Chinese patent application, CN213534884U, which discloses a heavy-duty mechanical dog device, comprising a torso; a comprehensive carrying frame is connected to the top of the torso; the comprehensive carrying frame includes a base, a positioning component, and a cylinder; the base is correspondingly connected to the torso; the positioning component is rotatably positioned above the base; the cylinder is clamped inside the positioning component; the side of the cylinder has several retrieval windows along its length; and a protective cover is hinged to each retrieval window.

[0004] The aforementioned heavy-duty mechanical dog device has the following shortcomings: In the aforementioned patent, a positioning component and a base are set on the torso, and the cylinder is fixed to the positioning component with straps. However, since the mechanical dog will swing significantly when it moves, the cylinder is prone to tilting. The simple strap setting directly affects the stability of the cylinder. Summary of the Invention

[0005] The purpose of this invention is to solve or at least alleviate the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a heavy-duty mechanical dog device, comprising a body of the mechanical dog, with two movable legs movably connected to the outer walls of both sides of the body, a load-bearing component provided on the top outer wall of the body, and the load-bearing component comprising two fixed seats, the two fixed seats being fixedly connected to the body, and the fixed seats having a U-shaped structure, the top outer walls of the two fixed seats being bolted to mounting seats, and the mounting seats having a T-shaped cross-section, the top outer walls of the two mounting seats having connecting grooves, and the top outer walls of the two mounting seats having connecting seats, the top outer walls of the two connecting seats being fixedly connected to the same load-bearing box, the load-bearing box having a semi-circular cross-section, the outer wall of the load-bearing box having an arc-shaped opening, and the inner wall of the arc-shaped opening being hinged to a box door, the outer wall of the box door being fixedly connected to two mounting ears, and one side of the outer wall of each mounting ear being screwed with a locking bolt, and the bottom outer wall of the load-bearing box being provided with an adjustment mechanism.

[0007] By adopting the above structure, a load-bearing component is set on the body of the mechanical dog. The load-bearing box on the load-bearing component facilitates the storage of the load-bearing goods carried by the mechanical dog. The cooperation between the two fixed seats and the mounting seats set on the body of the mechanical dog makes it easy to quickly install the load-bearing box on the mechanical dog, thereby realizing the load-bearing function of the mechanical dog.

[0008] The adjustment mechanism includes an adjustment seat, which is fixedly connected to the load cell. A storage slot is provided on one outer wall of the load cell, and a sealing door is hinged to the inner wall of the storage slot.

[0009] By adopting the above structure, a storage compartment is set on the load-bearing box. The storage compartment is convenient for storing miscellaneous items, and the sealing door is convenient for sealing the storage compartment, thereby protecting the items in the storage compartment.

[0010] The bottom outer wall of the adjustment seat has a groove, and the inner walls on both sides of the groove are rotatably connected to two bidirectional screws. The outer walls of the two bidirectional screws are each screwed with two threaded sleeves.

[0011] By adopting the above structure and setting two threaded sleeves on the bidirectional screw, the bidirectional screw can easily drive the threaded sleeves to move when it rotates.

[0012] Each of the four threaded sleeves has a connecting rod rotatably connected to its outer wall, and the bottom outer wall of each of the four connecting rods is rotatably connected to the same clamping seat, with a rubber pad adhered to the bottom outer wall of the clamping seat.

[0013] By adopting the above structure, the movement of the threaded sleeve facilitates the movement of the pressure seat via the connecting rod, and the downward movement of the pressure seat facilitates the clamping of the load box. The rubber pad is designed to protect the body of the mechanical dog and reduce friction between the pressure seat and the body of the mechanical dog.

[0014] One end of each of the two bidirectional screws is fixedly connected to a synchronous pulley, and the two synchronous pulleys are connected by the same synchronous belt. A circular groove is opened on one side of the outer wall of the adjusting seat, and a prism is rotatably connected to the inner wall of the circular groove. One end of the prism drive shaft is fixedly connected to one of the bidirectional screws.

[0015] By adopting the above structure, and by setting a synchronous pulley and a synchronous belt on the two bidirectional screws, it is convenient to make the two bidirectional screws rotate synchronously, which in turn facilitates the synchronous movement of the four threaded sleeves. The synchronous movement of the threaded sleeves directly drives the pressure seat to move, and the pressure seat presses against the body of the mechanical dog, thereby ensuring the stability of the load box.

[0016] Two connecting blocks are fixedly connected to the bottom outer wall of the connecting seat, and the outer walls on both sides of the two connecting blocks are provided with grooves.

[0017] By adopting the above structure, the load-bearing box can be easily installed onto the body of the mechanical dog through the cooperation between the connecting block and the mounting slot.

[0018] The mounting base has two mounting slots on its top outer wall, and the specifications of the mounting slots match the specifications of the connecting block. The mounting base has two cavities inside, and the inner walls of both cavities are equipped with snap-fit ​​mechanisms.

[0019] By adopting the above structure and setting a snap-fit ​​mechanism in the mounting base, the cooperation between the snap-fit ​​mechanism and the connecting block facilitates the quick and easy installation of the load-bearing box.

[0020] The locking mechanism includes four sliding rods, and two limiting pins are slidably connected to the outer walls of the four sliding rods respectively. The limiting pins are hexagonal prisms, and the inner walls of the cavities have two ridges that communicate with the mounting grooves. The limiting pins are slidably connected to the inner walls of the ridges. The outer walls of the two limiting pins are fixedly connected to connecting plates, and the connecting plates are L-shaped. The inner walls of the cavities are rotatably connected to screws, and the outer walls of the screws are screwed with nuts. The outer walls of the nuts are rotatably connected to two adjusting plates, and one end of each adjusting plate is rotatably connected to the two connecting plates respectively. One side of the outer wall of the mounting base has an adjusting groove, and the inner wall of the adjusting groove is rotatably connected to a rotating head. One side of the outer wall of the rotating head has a hexagonal groove, and the specifications of the limiting pins and the grooves are matched.

[0021] By adopting the above structure, and by setting two adjustable limit pins on the mounting base, the fit between the limit pins and the grooves on the connecting block makes it easy to fix the connecting block in the mounting base. When the screw rotates, it is easy to drive the nut to move. When the nut moves, it is easy to drive the two connecting plates to move the limit pins through the adjustment plate. The adjustable limit pins facilitate the quick installation of the load box.

[0022] The bottom outer wall of the connector is provided with a rectangular groove, and a clamping block is slidably connected to the inner wall of the rectangular groove. Two springs are connected between the clamping block and the inner wall of the rectangular groove.

[0023] By adopting the above structure, and by setting a clamping block and a spring at the bottom of the connecting seat, it is convenient to clamp the connecting seat in the reverse direction.

[0024] A silicone pad is fixedly connected to the bottom outer wall of the connector, and the silicone pad is a rectangular structure.

[0025] By adopting the above structure, the silicone pad effectively protects the bottom of the connector, thereby reducing wear on the connector.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] (1) This invention sets a load-bearing component on the body of the mechanical dog. The load-bearing box in the load-bearing component is convenient for storing items. At the same time, the sealed load-bearing box is convenient for protecting the items and preventing the goods from falling off during the movement of the mechanical dog. The cooperation between the connecting seat and the mounting seat set on the auxiliary component makes it convenient to quickly install the auxiliary mechanism onto the mechanical dog. When the mechanical dog needs to bear weight, the auxiliary box can be installed onto the mounting seat, which is convenient for quick disassembly of the load-bearing box. By setting an adjustment mechanism at the bottom of the auxiliary box, the fit between the pressing seat and the rubber pad can be adjusted, which makes it convenient to press the load-bearing box in the opposite direction, thereby preventing the load-bearing box from shaking significantly when the mechanical dog moves.

[0028] (2) The present invention provides a snap-fit ​​mechanism on the mounting base. The two adjustable limit pins in the snap-fit ​​mechanism facilitate the fixing of the load box on the mounting base. The screw in the snap-fit ​​mechanism drives the threaded sleeve to move, which in turn facilitates the movement of the limit pin by pulling the connecting plate through the two adjusting plates, thereby realizing the quick disassembly of the load box. The pressing seat in the adjusting mechanism can press the load box against the body of the chassis dog, thereby pressing the load box in the opposite direction and improving its stability. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0031] Figure 3 This is a schematic diagram of the load-bearing component structure of the present invention;

[0032] Figure 4 This is a schematic diagram of the load-bearing box structure of the present invention;

[0033] Figure 5 This is a schematic diagram of the adjustment mechanism structure of the present invention;

[0034] Figure 6 This is a schematic diagram of the adjusting seat structure of the present invention;

[0035] Figure 7 This is a schematic diagram of the internal structure of the adjusting seat of the present invention;

[0036] Figure 8 This is a partial cross-sectional view of the mounting base of the present invention;

[0037] Figure 9 This is a cross-sectional view of the mounting base according to Embodiment 1 of the present invention;

[0038] Figure 10 This is a cross-sectional view of the mounting base according to Embodiment 2 of the present invention.

[0039] In the diagram: 1. Body; 2. Movable leg; 3. Load-bearing component; 4. Fixed seat; 5. Mounting seat; 6. Mounting slot; 7. Connecting seat; 8. Load-bearing box; 9. Box door; 10. Locking bolt; 11. Adjustment mechanism; 12. Double-acting screw; 13. Connecting block; 14. Rib groove; 15. Adjusting seat; 16. Storage slot; 17. Prism; 18. Groove; 19. Pressing seat; 20. Rubber pad; 21. Connecting rod; 22. Synchronous pulley; 23. Synchronous belt; 24. Limit pin; 25. Slide rod; 26. Connecting plate; 27. Adjusting plate; 28. Rotating head; 29. ​​Nut; 30. Screw; 31. Spring; 32. Pressing block; 33. Silicone pad; 34. Threaded sleeve. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figure 1-9A heavy-duty mechanical dog device includes a body 1 of the mechanical dog. Two movable legs 2 are movably connected to the outer walls of both sides of the body 1. A load-bearing component 3 is provided on the top outer wall of the body 1, and the load-bearing component 3 includes two fixed seats 4, which are fixedly connected to the body 1. The fixed seats 4 have a U-shaped structure. Mounting seats 5 are bolted to the top outer walls of both fixed seats 4, and the mounting seats 5 have a T-shaped cross-section. Connecting grooves are provided on the top outer walls of both mounting seats 5, and connecting seats 7 are provided on the top outer walls of both mounting seats 5. The same load-bearing box 8 is fixedly connected to the top outer walls of the two connecting seats 7. The box 8 has a semi-circular cross-section. The outer wall of the load box 8 has an arc-shaped opening, and the inner wall of the arc-shaped opening is hinged with a box door 9. The outer wall of the box door 9 is fixedly connected with two mounting ears, and one side of the outer wall of each mounting ear is screwed with a locking bolt 10. The bottom outer wall of the load box 8 is provided with an adjustment mechanism 11. By setting the load-bearing component 3 on the body 1 of the mechanical dog, the load box 8 on the load-bearing component 3 can conveniently store the load carried by the mechanical dog. The cooperation between the two fixed seats 4 and the mounting seats 5 set on the body 1 of the mechanical dog makes it easy to quickly install the load box 8 on the mechanical dog, thereby realizing the load-bearing function of the mechanical dog.

[0042] For details, please refer to Figure 5-7 The adjustment mechanism 11 includes an adjustment seat 15, which is fixedly connected to the load cell 8. A storage slot 16 is provided on one outer wall of the load cell 8. A sealing door is hinged to the inner wall of the storage slot 16. By setting the storage slot 16 on the load cell 8, the storage slot 16 is convenient for storing miscellaneous items, and the sealing door is convenient for sealing the storage slot 16, thereby protecting the items in the storage slot 16.

[0043] For details, please refer to Figure 6-7 The bottom outer wall of the adjusting seat 15 has a groove 18, and two bidirectional screws 12 are rotatably connected to the inner walls of both sides of the groove 18. Two threaded sleeves 34 are screwed onto the outer walls of the two bidirectional screws 12. By setting two threaded sleeves 34 on the bidirectional screws 12, the bidirectional screws 12 drive the threaded sleeves 34 to move when they rotate.

[0044] For details, please refer to Figure 7 Each of the four threaded sleeves 34 has a connecting rod 21 rotatably connected to its outer wall, and the bottom outer wall of each of the four connecting rods 21 is rotatably connected to the same clamping seat 19. A rubber pad 20 is adhered to the bottom outer wall of the clamping seat 19. The clamping seat 19 is driven to move by the threaded sleeves 34 and the connecting rods 21. When the clamping seat 19 moves down, it clamps the load box 8. The rubber pad 2 is designed to protect the body 1 of the mechanical dog and reduce friction between the clamping seat 19 and the body 1 of the mechanical dog.

[0045] For details, please refer to Figure 7One end of each of the two bidirectional screws 12 is fixedly connected to a synchronous pulley 22, and the two synchronous pulleys 22 are connected by the same synchronous belt 23. A circular groove is opened on one side of the outer wall of the adjusting seat 15, and a prism 17 is rotatably connected to the inner wall of the circular groove. One end of the drive shaft of the prism 17 is fixedly connected to one of the bidirectional screws 12. By setting the synchronous pulley 22 and the synchronous belt 23 on the two bidirectional screws 12, it is convenient to make the two bidirectional screws 12 rotate synchronously, thereby facilitating the synchronous movement of the four threaded sleeves 34. Through the synchronous movement of the threaded sleeves 34, the pressing seat 19 is driven to move, so that the pressing seat 19 presses against the mechanical dog body 1, thereby ensuring the stability of the load box 8.

[0046] For details, please refer to Figure 3-4 Two connecting blocks 13 are fixedly connected to the bottom outer wall of the connecting seat 7, and the outer walls on both sides of the two connecting blocks 13 are provided with rib grooves 14. Through the cooperation between the connecting blocks 13 and the mounting groove 6, the load box 8 can be easily installed onto the body 1 of the mechanical dog.

[0047] For details, please refer to Figure 4 The mounting base 5 has two mounting slots 6 on its top outer wall, and the specifications of the mounting slots 6 match the specifications of the connecting block 13. The mounting base 5 has two cavities inside, and the inner walls of the two cavities are equipped with snap-fit ​​mechanisms. By setting snap-fit ​​mechanisms in the mounting base 5, the cooperation between the snap-fit ​​mechanisms and the connecting block 13 facilitates the quick and easy installation of the load-bearing box 8.

[0048] For details, please refer to Figure 8 The locking mechanism includes four sliding rods 25, and each of the four sliding rods 25 has two limiting pins 24 slidably connected to its outer wall. Each limiting pin 24 has a hexagonal prism structure, and the inner wall of the cavity has two ridges communicating with the mounting groove 6. The limiting pins 24 are slidably connected to the inner walls of the ridges. Each limiting pin 24 has a connecting plate 26 fixedly connected to its outer wall. The connecting plate 26 has a V-shaped structure. A screw 30 is rotatably connected to the inner wall of the cavity, and a nut 29 is screwed onto the outer wall of the screw 30. Two adjusting plates 27 are rotatably connected to the outer wall of the nut 29, and one end of each adjusting plate 27 is rotatably connected to one of the two connecting plates 26. An adjustment groove is provided on one side of the outer wall of the mounting base 5, and a rotating head 28 is rotatably connected to the inner wall of the adjustment groove. A hexagonal groove is provided on one side of the outer wall of the rotating head 28. The specifications of the limiting pin 24 match the specifications of the groove 14. By setting two adjustable limiting pins 24 on the mounting base 5, the cooperation between the limiting pins 24 and the groove 14 on the connecting block 13 makes it easy to fix the connecting block 13 in the mounting base 5. When the screw 20 rotates, it drives the nut 29 to move. When the nut 29 moves, it drives the two connecting plates 26 through the adjusting plate 27 to move the limiting pins 24. The adjustable limiting pins 24 facilitate the quick installation of the load box 8.

[0049] For details, please refer to Figure 9 The bottom outer wall of the connecting seat 7 is provided with a rectangular groove, and the inner wall of the rectangular groove is slidably connected with a pressing block 32. Two springs 31 are connected between the pressing block 32 and the inner wall of the rectangular groove. By setting the pressing block 32 and the springs 31 at the bottom of the connecting seat 7, it is convenient to press the connecting seat 7 in the opposite direction.

[0050] Working principle: When the mechanical dog needs to bear weight, first install the load-bearing component 3 onto the body 1 of the mechanical dog. During installation, first insert the two connecting blocks 13 on the connecting seat 7 into the mounting slots 6 respectively. Then, insert an Allen wrench into the rotating head 28. When the rotating head 28 rotates, it drives the screw 30 to rotate. When the screw 30 rotates, it drives the nut 29 to move. When the nut 29 moves towards the rotating head 28, it pushes the limit pin 24 into the ridge groove 14 on the connecting block 13 through the connecting plate 26, thereby completing the fixation of the load box 8. Then, adjust the adjusting mechanism 11 and then connect the socket wrench to the prism 17. When the prism 17 rotates, it directly drives one of the double-acting screws 12 to rotate. When the double-acting screw 12 rotates, it drives the two threaded sleeves 34 to move towards or away from each other. When the two threaded sleeves 34 move towards each other, the connecting rod 21 pushes the clamping seat 19 down. When the clamping seat 19 moves down, it is pressed against the body 1 of the mechanical dog by the rubber pad 20. The rubber pad 20 protects the clamping seat 19 and the body 1 of the mechanical dog and reduces the friction between the clamping seat 19 and the body 1 of the mechanical dog, thereby ensuring the stability of the load box 8. The load box 8 is equipped with an openable door 9, which makes it convenient to place goods on the load box 8. The door 9 is locked by the locking bolt 10 to prevent the goods from falling off during the movement of the mechanical dog. The storage slot 16 on the adjusting seat 15 can also hold some sundries. The spring 31 at the bottom of the connecting seat 7 pushes the clamping block 32, which facilitates the installation of the connecting seat 7 on the auxiliary connecting block 13.

[0051] This embodiment describes another specific structure of the connector 7, such as... Figure 10 As shown, a silicone pad 33 is fixedly connected to the bottom outer wall of the connector 7, and the silicone pad 33 is a rectangular structure. The silicone pad 33 is designed to protect the bottom of the connector, thereby reducing wear on the connector 7.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heavy-duty mechanical dog device, comprising the body (1) of the mechanical dog, characterized in that: Two movable legs (2) are movably connected to the outer walls of both sides of the body (1). A load-bearing component (3) is provided on the top outer wall of the body (1), and the load-bearing component (3) includes two fixed seats (4). The two fixed seats (4) are fixedly connected to the body (1), and the fixed seats (4) have a U-shaped structure. The top outer walls of the two fixed seats (4) are connected to mounting seats (5) by bolts, and the mounting seats (5) have a T-shaped cross-section. The top outer walls of the two mounting seats (5) are provided with connecting grooves, and the two... Each mounting base (5) has a connecting base (7) on its top outer wall. The two connecting bases (7) are fixedly connected to the same load box (8) on their top outer walls. The load box (8) has a semi-circular cross-section. The outer wall of the load box (8) has an arc-shaped opening, and the inner wall of the arc-shaped opening is hinged with a box door (9). The outer wall of the box door (9) is fixedly connected with two mounting ears, and one side of the outer wall of each mounting ear is screwed with a locking bolt (10). The bottom outer wall of the load box (8) is provided with an adjustment mechanism (11). The bottom outer wall of the connecting seat (7) is fixedly connected to two connecting blocks (13), and the outer walls on both sides of the two connecting blocks (13) are provided with rib grooves (14); The mounting base (5) has two mounting grooves (6) on its top outer wall, and the specifications of the mounting grooves (6) match the specifications of the connecting block (13). The mounting base (5) has two cavities inside, and the inner walls of the two cavities are provided with snap-fit ​​mechanisms. The locking mechanism includes four slide rods (25), and the outer walls of the four slide rods (25) are slidably connected to two limiting pins (24). The limiting pins (24) are hexagonal prisms. The inner wall of the cavity has two ridges that communicate with the mounting groove (6). The limiting pins (24) are slidably connected to the inner walls of the ridges. The outer walls of the two limiting pins (24) are fixedly connected to connecting plates (26), and the connecting plates (26) are seven-shaped. The inner wall of the cavity is rotatably connected to a screw. 30), and a nut (29) is screwed onto the outer wall of the screw (30). Two adjusting plates (27) are rotatably connected to the outer wall of the nut (29), and one end of the two adjusting plates (27) is rotatably connected to two connecting plates (26). An adjusting groove is provided on one side of the outer wall of the mounting base (5), and a rotating head (28) is rotatably connected to the inner wall of the adjusting groove. A hexagonal groove is provided on one side of the outer wall of the rotating head (28), and the specifications of the limiting pin (24) match the specifications of the groove (14).

2. The heavy-duty mechanical dog device according to claim 1, characterized in that: The adjustment mechanism (11) includes an adjustment seat (15), which is fixedly connected to the load box (8). A storage slot (16) is provided on one outer wall of the adjustment seat (15), and a sealing door is hinged to the inner wall of the storage slot (16).

3. The heavy-duty mechanical dog device according to claim 2, characterized in that: The bottom outer wall of the adjusting seat (15) is provided with a groove (18), and two bidirectional screws (12) are rotatably connected to the inner walls on both sides of the groove (18). Two threaded sleeves (34) are screwed onto the outer walls of the two bidirectional screws (12).

4. The heavy-duty mechanical dog device according to claim 3, characterized in that: The outer walls of the four threaded sleeves (34) are rotatably connected to connecting rods (21), and the bottom outer walls of the four connecting rods (21) are rotatably connected to the same pressing seat (19), and the bottom outer wall of the pressing seat (19) is bonded with a rubber pad (20).

5. The heavy-duty mechanical dog device according to claim 4, characterized in that: One end of each of the two bidirectional screws (12) is fixedly connected to a synchronous pulley (22), and the two synchronous pulleys (22) are connected to the same synchronous belt (23). A circular groove is provided on one side of the outer wall of the adjusting seat (15), and a prism (17) is rotatably connected to the inner wall of the circular groove. One end of the drive shaft of the prism (17) is fixedly connected to one of the bidirectional screws (12).

6. The heavy-duty mechanical dog device according to claim 1, characterized in that: The bottom outer wall of the connecting seat (7) is provided with a rectangular groove, and the inner wall of the rectangular groove is slidably connected with a pressing block (32). Two springs (31) are connected between the pressing block (32) and the inner wall of the rectangular groove.

7. The heavy-duty mechanical dog device according to claim 1, characterized in that: The bottom outer wall of the connector (7) is fixedly connected to a silicone pad (33), and the silicone pad (33) is a rectangular structure.

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