Brake device for winch

Abstract

The utility model relates to the technical field of ship winch braking, and discloses a winch brake device which comprises a bottom plate and a rotary drum, a friction plate is arranged on the inner ring of a steel belt, the other end of a first spring is fixedly connected with a clamping plate, synchronous belt wheels are fixedly arranged on the outer surfaces of four winding shafts and two transmission shafts in a sleeved mode, and the synchronous belt wheels are connected with the rotary drum. A synchronous cog belt is wound on the surface of the synchronous belt wheel corresponding to the transmission shaft and the winding shaft in a meshed mode, and a steel rope is wound on the outer surface of the winding wheel. By rotating the transmission shaft and cooperating with the synchronous belt wheel and the synchronous toothed belt, the winding shaft drives the clamping plate to move, the L-shaped fixing piece on the friction plate is fixed, then professional glue is adopted to bond the friction plate and the steel belt, and when the friction plate is disassembled, only the transmission shaft needs to be reversely rotated, then the friction plate is disassembled through a professional tool, and therefore the friction plate can be conveniently disassembled and assembled. The brake steel belt and the friction plate can be separated without detaching a large number of screws one by one, and time and labor are saved.

Description

Technical Field

[0001] This utility model relates to the field of ship winch braking technology, specifically a winch braking device. Background Technology

[0002] Currently, ships, especially large ocean-going vessels, are equipped with various devices on the deck or hull, including winches for raising and lowering cables. In actual operation, the winch disc needs to be stopped by a braking device to achieve the controllable raising and lowering of cables of any length. This is used to control the winch's operating speed during the lowering of heavy objects or when deceleration is required, ensuring the smoothness and safety of the operation, as well as providing emergency safety braking in case of sudden abnormalities.

[0003] Most braking devices currently in use are band brakes, mainly composed of a brake band, brake friction pads, and a brake control mechanism. When braking is required, the brake friction pads come into close contact with the brake hub, generating friction to achieve braking. The brake band and brake friction pads are connected and fixed together by many screws. This connection method is complex and labor-intensive, undoubtedly causing greater trouble for subsequent replacement of friction pads. Therefore, a winch braking device has been proposed. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present invention provides a winch braking device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a winch braking device, comprising a base plate and a rotating drum. Two sets of symmetrically arranged side plates are fixedly connected to the top outer surface of the base plate. Each set consists of two side plates, and a rotating shaft is fixedly connected between each pair of side plates. Connecting lugs are fixedly connected to the outer surfaces of the two rotating shafts, and a steel belt is fixedly connected between the two connecting lugs. A friction plate is provided on the inner ring of the steel belt, and a support frame is fixedly connected to the outer surface of the steel belt. A crossbar is fixedly passed through the outer surface of the support frame, and two connecting seats are movably fitted onto the outer surface of the crossbar. The front and rear outer surfaces of the friction plate correspond to the connecting seats. An L-shaped fixing plate is fixedly welded to the connection. A first spring is fixedly connected to the top inner surface and the bottom inner surface of the connecting seat. A clamping plate is fixedly connected to the other end of the first spring. A drive shaft and two take-up shafts are rotatably connected to the opposite outer surfaces of the two connecting seats. Synchronous pulleys are fixedly sleeved on the outer surfaces of the four take-up shafts and the two drive shafts. There are two synchronous pulleys on the drive shaft and they are located on different planes. Synchronous toothed belts are meshed around the surfaces of the synchronous pulleys corresponding to the drive shaft and the take-up shaft. A take-up wheel is fixedly sleeved on the outer surface of the take-up shaft. A steel rope is wound on the outer surface of the take-up wheel. One end of the steel rope is fixedly connected to the corresponding clamping plate.

[0006] As a further explanation of this utility model, the front drive shaft rotates through the front outer surface of the connecting seat, and a limiting cylinder is fixedly connected to the front outer surface of the connecting seat. The limiting cylinder is located at the outer end of the front drive shaft, and a rectangular groove is opened on the outer surface of the front drive shaft at one end outside the connecting seat. A second spring is fixedly connected inside the rectangular groove, and a triangular block is fixedly connected to the top outer surface of the second spring. A plurality of limiting holes are opened in a circumferential array on the outer surface of the limiting cylinder.

[0007] As a further explanation of this utility model, the outer surface of the rotating cylinder is provided with an abutment hole, and a cross rod is fixedly connected to the side of the rotating cylinder away from the opening end.

[0008] As a further explanation of this utility model, a transmission plate is rotatably sleeved on the outer surface of the left-side rotating shaft. Pull plates are rotatably connected to the front and rear outer surfaces of the transmission plate. One end of the pull plate is fixedly connected to the steel belt. An operating lever is fixedly connected to the top outer surface of the transmission plate. A connecting frame is fixedly connected to the top outer surface of the steel belt. The operating lever moves through the outer surface of the connecting frame.

[0009] As a further explanation of this utility model, a support plate is fixedly connected to the top outer surface of the two side plates on the right. The control lever rotates through the outer surface of the support plate. A pull rod is movably passed through the front outer surface of the support plate. A positioning block is fixedly connected to one end of the pull rod inside the support plate. A third spring is fixedly connected between the positioning block and the front inner wall of the support plate. The third spring is sleeved on the outer surface of the pull rod. A plurality of positioning holes arranged in a linear array are opened on the outer surface of the control lever.

[0010] As a further explanation of this utility model, a connecting plate is fixedly connected to the top outer surface of each of the two connecting seats, and a through hole is opened on the outer surface of each of the two connecting plates. A screw is inserted into the inside of the through hole, and a nut is threaded onto the outer surface of the screw.

[0011] As a further explanation of this utility model, a rectangular rod is fixedly connected to one end of the front drive shaft near the rear drive shaft, and a rectangular groove is opened at one end of the rear drive shaft near the front drive shaft, and the rectangular rod is movably inserted into the rectangular groove.

[0012] As a further explanation of this utility model, several anti-slip strips are fixedly connected to the outer surfaces of the two upper and lower clamping plates.

[0013] As a further explanation of this utility model, the steel strip and the friction plate are bonded together with a professional adhesive, including but not limited to J-15 adhesive.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. In the winch braking device provided by this utility model, by rotating the transmission shaft, in conjunction with the synchronous pulley and synchronous toothed belt, the winding shaft drives the clamping plate to move, thereby fixing the L-shaped fixing plate on the friction plate. Then, professional glue is used to bond the friction plate to the steel belt. When disassembling, it is only necessary to rotate the transmission shaft in the opposite direction and then use professional tools to remove the friction plate. Thus, when installing and removing the friction plate, it is not necessary to remove a large number of screws one by one to separate the brake steel belt and the friction plate, which is more time-saving and labor-saving.

[0016] 2. In the winch braking device provided by this utility model, by pulling the lever, the third spring is compressed, which, together with the positioning hole and the positioning block, releases the control lever from the limit. When the force applied to the lever is stopped, the third spring drives the positioning block to reset, so that the positioning block is inserted into the positioning hole and limits the control lever, thus eliminating the need for the operator to continuously pull the control lever.

[0017] 3. In the winch braking device provided by this utility model, pulling the control lever causes the transmission plate to rotate on the rotating shaft. After the transmission plate rotates, the pull plate rotates on the transmission plate, causing the transmission plate to drive the friction plate to contact the brake hub for braking and deceleration. By setting a manual brake, electrical faults and other situations can be avoided, which could lead to brake failure and thus safety accidents. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of the present invention;

[0019] Figure 2 This is a frontal sectional view of the present invention.

[0020] Figure 3 This is a schematic diagram of the two connecting seats and their related structures of this utility model;

[0021] Figure 4 This is a schematic diagram of the rear connecting seat and related structures of this utility model;

[0022] Figure 5 This is a top sectional view of the rear connecting seat of this utility model.

[0023] Figure 6 This is a schematic diagram of the limiting cylinder structure of this utility model;

[0024] Figure 7 This is a cross-sectional view of the limiting cylinder of this utility model;

[0025] Figure 8 This is a schematic diagram of the rotating drum and related structures of this utility model;

[0026] Figure 9 This is a schematic diagram of the friction plate structure of this utility model;

[0027] Figure 10 For this utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0028] Figure 11 For this utility model Figure 3 Enlarged structural diagram at point B in the middle.

[0029] In the diagram: 1. Base plate; 2. Side plate; 3. Shaft; 4. Connecting ear plate; 5. Steel belt; 6. Friction plate; 7. L-shaped fixing plate; 8. Connecting seat; 9. First spring; 10. Clamping plate; 11. Winding shaft; 12. Steel rope; 13. Drive shaft; 14. Synchronous pulley; 15. Synchronous toothed belt; 16. Limiting cylinder; 17. Rectangular groove; 18. Second spring; 19. Triangular block; 20. Limiting hole; 21. Rotating cylinder; 22. Abutment hole; 23. Cross rod; 24. Transmission plate; 25. Pull plate; 26. Control lever; 27. Positioning hole; 28. Pull rod; 29. ​​Third spring; 30. Positioning block; 31. Connecting plate; 32. Screw; 33. Rectangular rod. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example 1:

[0032] Please refer to Figures 1-11This utility model provides a technical solution: a winch braking device, including a base plate 1 and a rotating drum 21. Two sets of symmetrically arranged side plates 2 are fixedly connected to the top outer surface of the base plate 1. Each set of side plates 2 consists of two plates. A rotating shaft 3 is fixedly connected between each pair of side plates 2. Connecting ear plates 4 are fixedly connected to the outer surfaces of the two rotating shafts 3. A steel belt 5 is fixedly connected between the two connecting ear plates 4. Friction plates 6 are provided on the inner ring of the steel belt 5. A support frame is fixedly connected to the outer surface of the steel belt 5. A crossbar is fixedly passed through the outer surface of the support frame. Two connecting seats 8 are movably sleeved on the outer surface of the crossbar. The friction plates 6 are located on the front and rear sides. An L-shaped fixing piece 7 is fixedly welded to the outer surface corresponding to the connecting seat 8. A first spring 9 is fixedly connected to the top and bottom inner surfaces of the connecting seat 8. A clamping plate 10 is fixedly connected to the other end of the first spring 9. A drive shaft 13 and two take-up shafts 11 are rotatably connected to the opposite outer surfaces of the two connecting seats 8. Synchronous pulleys 14 are fixedly sleeved on the outer surfaces of the four take-up shafts 11 and the two drive shafts 13. There are two synchronous pulleys 14 on the drive shaft 13, located on different planes. A synchronous toothed belt 15 is wound around the surfaces of the corresponding synchronous pulleys 14 on the drive shaft 13 and the take-up shaft 11. The outer surface of the take-up shaft 11... A take-up reel is fixedly mounted on the surface, and a steel rope 12 is wound around the outer surface of the take-up reel. One end of the steel rope 12 is fixedly connected to the corresponding clamping plate 10. Specifically, rotating the drive shaft 13 causes the synchronous pulley 14 on the drive shaft 13 to rotate. Under the action of the synchronous toothed belt 15, the other two synchronous pulleys 14 rotate, thereby causing the take-up shaft 11 to rotate. When the take-up shaft 11 rotates, it spits out the steel rope 12. Under the action of the first spring 9, it drives the two clamping plates 10 to reset, thereby releasing the limit at the L-shaped fixing plate 7 of the friction plate 6. Then, a special tool (such as clamps) is used to remove the steel rope from the friction plate 6 at the L-shaped fixing plate 7. At the gap between the 5, remove the friction plate 6 and replace it with a new friction plate 6. When replacing the new friction plate 6, align the L-shaped fixing piece 7 of the friction plate 6 with the connecting seat 8, and rotate the drive shaft 13 in the opposite direction so that the winding shaft 11 winds up the steel rope 12 until the two clamping plates 10 clamp the L-shaped fixing piece 7 so that the drive shaft 13 can no longer rotate. Then, remove the rotating drum 21. After the rotating drum 21 is removed, the second spring 18 drives the triangular block 19 to be inserted into the corresponding limiting hole 20 to limit the drive shaft 13. Then, use professional glue (such as J-15 glue) to firmly bond the friction plate 6 to the other positions of the brake steel band 5.

[0033] In this embodiment, the front drive shaft rotates through the front outer surface of the connecting seat 8. A limiting cylinder 16 is fixedly connected to the front outer surface of the connecting seat 8. The limiting cylinder 16 is located at the outer end of the front drive shaft. A rectangular groove 17 is formed on the outer surface of the front drive shaft at the outer end of the connecting seat 8. A second spring 18 is fixedly connected inside the rectangular groove 17. A triangular block 19 is fixedly connected to the top outer surface of the second spring 18. A plurality of limiting holes 20 are formed in a circumferential array on the outer surface of the limiting cylinder 16. Specifically, the second spring 18 drives the triangular block 19 to insert the triangular block 19 into the corresponding limiting hole 20. The triangular block 19 cooperates with the limiting hole 20 to limit the drive shaft 13 and prevent the drive shaft 13 from rotating on its own.

[0034] In this embodiment, the outer surface of the rotating cylinder 21 is provided with an abutment hole 22. A cross rod 23 is fixedly connected to the side of the rotating cylinder 21 away from the opening end. Specifically, the rotating cylinder 21 is inserted into the gap between the limiting cylinder 16 and the drive shaft 13. As the rotating cylinder 21 is inserted, it squeezes the triangular block 19, causing the second spring 18 to compress. The triangular block 19 disengages from the limiting hole 20 and enters the interior of the rotating cylinder 21. When the triangular block 19 contacts the abutment hole 22, the second spring 18 drives the triangular block 19 to insert into the abutment hole 22. Then, the cross rod 23 drives the rotating cylinder 21 to rotate, and the rotating cylinder 21 drives the drive shaft 13 to rotate.

[0035] In this embodiment, a connecting plate 31 is fixedly connected to the top outer surface of both connecting seats 8. A through hole is opened on the outer surface of both connecting plates 31. A screw 32 is inserted into the through hole. A nut is threaded onto the outer surface of the screw 32. Specifically, after inserting the screw 32 into the through hole, the nut is screwed on to connect the connecting plates 31, thereby fixing the two connecting seats 8 to the front and rear sides of the steel strip 5.

[0036] In this embodiment, a rectangular rod 33 is fixedly connected to one end of the front drive shaft 13 near the rear drive shaft 13, and a rectangular groove 17 is provided at one end of the rear drive shaft 13 near the front drive shaft 13. The rectangular rod 33 is movably inserted into the rectangular groove 17. Specifically, by setting the rectangular rod 33 and the rectangular groove 17, when adjusting the distance between the two connecting seats 8, the rectangular rod 33 slides inside the rectangular groove 17, and when the front drive shaft 13 is rotated, the rectangular rod 33 can be driven to rotate the rear drive shaft 13 together.

[0037] In this embodiment, several anti-slip strips are fixedly connected to the outer surfaces of the upper and lower clamping plates 10. Specifically, the anti-slip strips increase the friction between the clamping plates 10 and the L-shaped fixing piece 7.

[0038] In this embodiment, the steel strip 5 and the friction plate 6 are bonded together with a professional adhesive, including but not limited to J-15 adhesive.

[0039] In practical implementation, when the friction plate 6 needs to be replaced after long-term use, the nut is removed from the screw 32, releasing the two connecting seats 8 from their limits. Then, the rotating drum 21 is inserted into the gap between the limiting cylinder 16 and the drive shaft 13. As the rotating drum 21 is inserted, it presses against the triangular block 19, causing the second spring 18 to compress. The triangular block 19 disengages from the limiting hole 20 and enters the interior of the rotating drum 21. When the triangular block 19 contacts the abutment hole 22, the second spring 18 drives the triangular block 19 to insert into the abutment hole 22. Then, the rotating drum 21 is rotated via the cross rod 23, which in turn drives the drive shaft 13 to rotate, and the synchronous pulley 14 on it to rotate. Under the action of the synchronous toothed belt 15, the other two synchronous pulleys 14 rotate, thereby causing the winding shaft 11 to rotate. When the steel rope 12 is released, the first spring 9 drives the two clamping plates 10 to reset, thereby releasing the limit on the L-shaped fixing plate 7 of the friction plate 6. Then, a special tool (such as pliers) is used to remove the friction plate 6 from the gap between the friction plate 6 and the steel belt 5 at the L-shaped fixing plate 7. A new friction plate 6 is then replaced. When replacing the new friction plate 6, the L-shaped fixing plate 7 of the friction plate 6 is aligned with the connecting seat 8, and the drive shaft 13 is rotated in the opposite direction, so that the winding shaft 11 winds up the steel rope 12 until the two clamping plates 10 clamp the L-shaped fixing plate 7, so that the drive shaft 13 can no longer rotate. Then, the rotating drum 21 is removed. After the rotating drum 21 is removed, the second spring 18 drives the triangular block 19 to be inserted into the corresponding limiting hole 20 to limit the drive shaft 13. Finally, the friction plate 6 and the other positions of the brake steel belt 5 are firmly bonded with professional glue (such as J-15 glue).

[0040] Example 2:

[0041] Please refer to Figures 1-11 This utility model provides a technical solution: a transmission plate 24 is rotatably sleeved on the outer surface of the left rotating shaft 3. Pull plates 25 are rotatably connected to the outer surfaces of the front and rear sides of the transmission plate 24. One end of the pull plate 25 is fixedly connected to the steel belt 5. A control lever 26 is fixedly connected to the top outer surface of the transmission plate 24. A connecting frame is fixedly connected to the top outer surface of the steel belt 5. The control lever 26 moves through the outer surface of the connecting frame. Specifically, pulling the control lever 26 causes the transmission plate 24 to rotate on the rotating shaft 3. After the transmission plate 24 rotates, the pull plate 25 rotates on the transmission plate 24, causing the transmission plate 24 to drive the friction plate 6 to contact the brake hub for braking and deceleration.

[0042] In this embodiment, a support plate is fixedly connected to the top outer surface of the two right side plates 2. The control lever 26 rotates through the outer surface of the support plate. A pull rod 28 is movably passed through the front outer surface of the support plate. A positioning block 30 is fixedly connected to one end of the pull rod 28 located inside the support plate. A third spring 29 is fixedly connected between the positioning block 30 and the front inner wall of the support plate. The third spring 29 is sleeved on the outer surface of the pull rod 28. Several positioning holes 27 arranged in a linear array are opened on the outer surface of the control lever 26. Specifically, pulling the pull rod 28 outward compresses the third spring 29, causing the positioning block 30 to disengage from the inside of the positioning hole 27, thus releasing the control lever 26. When the force applied to the pull rod 28 is stopped, the third spring 29 drives the positioning block 30 to insert into the corresponding positioning hole 27, thus limiting the control lever 26. There is no need for the operator to pull the control lever 26 at all times.

[0043] In practical implementation, when manual braking is required, the operator pulls the lever 28 outward, compressing the third spring 29 and causing the positioning block 30 to disengage from the positioning hole 27. Then, the operator pulls the control lever 26, which drives the transmission plate 24 to rotate on the rotating shaft 3. After the transmission plate 24 rotates, the pull plate 25 rotates on the transmission plate 24, causing the transmission plate 24 to drive the friction plate 6 to contact the brake hub for braking and deceleration. After pulling the control lever 26 to a certain position, the lever 28 is released, allowing the third spring 29 to drive the positioning block 30 to insert into the positioning hole 27, thus limiting the position of the lever 28. This eliminates the need for the operator to constantly pull the control lever 26. By setting up manual braking, electrical faults and other situations that could lead to brake failure and subsequent safety accidents are avoided.

[0044] Working Principle: In actual use, when the friction plate 6 needs to be replaced after prolonged use, the nut is removed from the screw 32, releasing the two connecting seats 8 from their limiting positions. Then, the rotating drum 21 is inserted into the gap between the limiting cylinder 16 and the drive shaft 13. As the rotating drum 21 is inserted, it presses against the triangular block 19, causing the second spring 18 to compress. The triangular block 19 disengages from the limiting hole 20 and enters the interior of the rotating drum 21. When the triangular block 19 contacts the abutment hole 22, the second spring 18 drives the triangular block 19 to insert into the abutment hole 22. Then, the rotating drum 21 is rotated via the cross rod 23, which in turn drives the drive shaft 13 to rotate, and the synchronous pulley 14 on it to rotate. Under the action of the synchronous toothed belt 15, the other two synchronous pulleys 14 rotate, thereby causing the winding shaft 11 to rotate and wind up the drum. When shaft 11 rotates, the steel rope 12 is ejected. Under the action of the first spring 9, the two clamping plates 10 are reset, thereby releasing the limit on the L-shaped fixing plate 7 of the friction plate 6. Then, a special tool (such as pliers) is used to remove the friction plate 6 from the gap between the friction plate 6 and the steel belt 5 at the L-shaped fixing plate 7. A new friction plate 6 is then replaced. When replacing the new friction plate 6, the L-shaped fixing plate 7 of the friction plate 6 is aligned with the connecting seat 8, and the drive shaft 13 is rotated in the opposite direction, so that the winding shaft 11 winds up the steel rope 12 until the two clamping plates 10 clamp the L-shaped fixing plate 7, making the drive shaft 13 unable to rotate anymore. Then, the rotating drum 21 is removed. After the rotating drum 21 is removed, the second spring 18 drives the triangular block 19 to be inserted into the corresponding limiting hole 20 to limit the drive shaft 13. Finally, the friction plate 6 and the other positions of the brake steel belt 5 are firmly bonded with professional glue (such as J-15 glue).

[0045] When manual braking is required, the operator pulls the lever 28 outward, compressing the third spring 29 and causing the positioning block 30 to disengage from the positioning hole 27. Then, the operator pulls the control lever 26, which drives the transmission plate 24 to rotate on the rotating shaft 3. After the transmission plate 24 rotates, the pull plate 25 rotates on the transmission plate 24, causing the transmission plate 24 to drive the friction plate 6 to contact the brake hub for braking and deceleration. After pulling the control lever 26 to a certain position, the lever 28 is released, allowing the third spring 29 to drive the positioning block 30 to insert into the positioning hole 27, thus limiting the position of the lever 28. This eliminates the need for the operator to constantly pull the control lever 26. By setting up manual braking, electrical faults and other situations that could lead to brake failure and subsequent safety accidents are avoided.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A winch braking device, comprising a base plate (1) and a rotating drum (21), characterized in that: The top outer surface of the base plate (1) is fixedly connected to two sets of side plates (2) arranged symmetrically on the left and right. Each set of side plates (2) consists of two plates. A rotating shaft (3) is fixedly connected between the two side plates (2) in each set. A connecting ear plate (4) is fixedly connected to the outer surface of the two rotating shafts (3). A steel strip (5) is fixedly connected between the two connecting ear plates (4). A friction plate (6) is provided on the inner ring of the steel strip (5). A support frame is fixedly connected to the outer surface of the steel strip (5). A crossbar is fixedly passed through the outer surface of the support frame. Two connecting seats (8) are movably sleeved on the outer surface of the crossbar. L-shaped fixing plates (7) are fixedly welded to the front and rear outer surfaces of the friction plate (6) at the corresponding positions of the connecting seats (8). The top inner surface and bottom inner surface of the connecting seats (8) are fixedly connected to the connecting seats (8). A first spring (9) is fixedly connected to the other end of the first spring (9), and a clamp (10) is fixedly connected to the other end of the first spring (9). The outer surfaces of the two connecting seats (8) are rotatably connected to a drive shaft (13) and two take-up shafts (11). The outer surfaces of the four take-up shafts (11) and the two drive shafts (13) are fixedly fitted with synchronous pulleys (14). There are two synchronous pulleys (14) on the drive shaft (13) and they are located on different planes. The surfaces of the synchronous pulleys (14) corresponding to the drive shaft (13) and the take-up shaft (11) are meshed with synchronous toothed belts (15). The outer surface of the take-up shaft (11) is fixedly fitted with a take-up wheel. The outer surface of the take-up wheel is wound with a steel rope (12). One end of the steel rope (12) is fixedly connected to the corresponding clamp (10).

2. A winch braking device according to claim 1, characterized in that: The front drive shaft rotates through the front outer surface of the connecting seat (8). A limiting cylinder (16) is fixedly connected to the front outer surface of the connecting seat (8). The limiting cylinder (16) is located at the outer end of the front drive shaft. A rectangular groove (17) is opened on the outer surface of the front drive shaft at the outer end of the connecting seat (8). A second spring (18) is fixedly connected inside the rectangular groove (17). A triangular block (19) is fixedly connected to the top outer surface of the second spring (18). A number of limiting holes (20) are opened in a circumferential array on the outer surface of the limiting cylinder (16).

3. A winch braking device according to claim 1, characterized in that: The outer surface of the rotating cylinder (21) is provided with an abutment hole (22), and a cross rod (23) is fixedly connected to the side of the rotating cylinder (21) away from the opening end.

4. A winch braking device according to claim 1, characterized in that: A transmission plate (24) is rotatably sleeved on the outer surface of the left-side rotating shaft (3). Pull plates (25) are rotatably connected to the front and rear outer surfaces of the transmission plate (24). One end of the pull plate (25) is fixedly connected to the steel belt (5). A control lever (26) is fixedly connected to the top outer surface of the transmission plate (24). A connecting frame is fixedly connected to the top outer surface of the steel belt (5). The control lever (26) moves through the outer surface of the connecting frame.

5. A winch braking device according to claim 4, characterized in that: Support plates are fixedly connected to the top outer surfaces of the two side plates (2) on the right side. The control lever (26) rotates through the outer surface of the support plate. A pull rod (28) moves through the front outer surface of the support plate. A positioning block (30) is fixedly connected to one end of the pull rod (28) inside the support plate. A third spring (29) is fixedly connected between the positioning block (30) and the front inner wall of the support plate. The third spring (29) is sleeved on the outer surface of the pull rod (28). A number of positioning holes (27) arranged in a linear array are opened on the outer surface of the control lever (26).

6. A winch braking device according to claim 1, characterized in that: Both of the connecting seats (8) have a connecting plate (31) fixedly connected to their top outer surfaces. Both of the connecting plates (31) have through holes on their outer surfaces. A screw (32) is inserted into the through hole, and a nut is threaded onto the outer surface of the screw (32).

7. A winch braking device according to claim 1, characterized in that: A rectangular rod (33) is fixedly connected to one end of the front drive shaft (13) near the rear drive shaft (13), and a rectangular groove (17) is opened at one end of the rear drive shaft (13) near the front drive shaft (13), and the rectangular rod (33) is movably inserted into the rectangular groove (17).

8. A winch braking device according to claim 1, characterized in that: Several anti-slip strips are fixedly connected to the outer surfaces of the two clamps (10) facing each other.

9. A winch braking device according to claim 1, characterized in that: The steel strip (5) and the friction plate (6) are bonded together with a professional adhesive, including but not limited to J-15 adhesive.

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