Auxiliary braking device for winch

Abstract

A detachable static limiting mechanism is arranged on one side of a fixing seat, an adjusting mechanism is arranged on the static limiting mechanism in a contactable mode, one end of the adjusting mechanism is connected with one end of a dynamic limiting mechanism, and bases are arranged on the other side of the fixing seat in parallel at intervals. The base is rotatably connected with the lower end of a supporting rod through a lower connecting rod, a pull rod transversely penetrates through the upper portion of the middle of the supporting rod, a protruding block is arranged below the middle of the supporting rod, the upper end of the supporting rod is rotatably connected with a brake assembly through an upper connecting rod, and the brake assembly can make contact with the outer diameter of the winch in an attached mode. The installation space of an existing winch braking device is saved under the condition that space adding is limited, emergency auxiliary braking is carried out on the winch under the emergency situation, the position of a braking point can be adjusted in a multi-angle mode, an extra mechanical power part is not needed, cost is low, operation is easy, disassembly and assembly are convenient, and safety and reliability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of winch braking devices, and particularly to an auxiliary braking device for a winch. Background Art

[0002] Existing winch braking devices are used for emergency braking in case of overloading of the winch. Common braking devices are mostly hydraulic disc brakes or electric motor brakes. Mechanical hydraulic brakes are not applicable and cannot be structurally installed when the installation and addition space are limited. They have complex structures and high costs, and cannot perform emergency braking in case of sudden situations such as running out of oil or power.

[0003] Therefore, designing an auxiliary braking device for a winch to solve the problem of saving the installation space of the existing winch braking device under the condition of limited space addition, performing emergency auxiliary braking on the winch in case of sudden situations, and being able to adjust the position of the braking point at multiple angles without the need for an additional mechanical power part has become the direction of further improvement. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides an auxiliary braking device for a winch. A detachable static limiting mechanism is provided on one side of the fixed seat, and an adjusting mechanism is contactably provided on the static limiting mechanism. One end of the adjusting mechanism is connected to one end of the dynamic limiting mechanism. The dynamic limiting mechanism includes a base, a lower connecting rod, a support rod, a pull rod, a convex block, and an upper connecting rod. On the other side of the fixed seat, a base is provided in parallel and at intervals. The base is rotatably connected to the lower end of the support rod through the lower connecting rod. A pull rod is horizontally and fixedly penetrated above the middle of the support rod, a convex block is provided below the middle of the support rod, and the upper end of the support rod is rotatably connected to the brake assembly through the upper connecting rod. The brake assembly is in fit contact with the outer diameter of the winch.

[0005] Preferably, the adjusting mechanism includes a nut fixing cover, a nut seat, a lead screw assembly, and a hand wheel. Installation holes 1 are opened on both sides of the upper end of the fixed seat. A nut fixing cover is provided in the installation hole 1, and the nut fixing cover is fixedly connected to the fixed seat through bolts in the circumferential direction; a nut seat is adaptively installed between the relatively arranged nut fixing covers. A lead screw assembly is penetrated through the nut seat. The upper end of the lead screw assembly is fixedly connected to the pull rod, and the lower end of the lead screw assembly is adaptively connected to the hand wheel.

[0006] Preferably, the brake assembly includes a brake disc, a brake seat, and brake pads. The brake disc and the brake seat are integrally formed. An arc-shaped through groove is opened on the brake disc, and the brake pads are fixedly attached in the arc-shaped through groove through bolts; the brake seat is inserted into the inner side of the upper end of the support rod and has a gap therewith.

[0007] Preferably, the central angle of the brake pads is less than 45°.

[0008] Preferably, both upper and lower ends of the support rod are provided with mounting holes 2 which are positioned opposite to each other, and a mounting hole 3 is opened on the brake seat. The mounting hole 2 at the upper end of the support rod is connected to the mounting hole 3 through an upper connecting rod; the diameter of the mounting hole 3 is larger than the diameter of the mounting hole 2.

[0009] Preferably, the upper connecting rod and the lower connecting rod have the same structure, both comprising a fixed rod, a bushing and a limiting collar, the fixed rod is sleeved with a bushing, the bushing is fixed to the fixed rod by a limiting collar, and the bushing is rotatably connected to the support rod.

[0010] Preferably, the screw assembly includes a screw body, a screw fixing cover, and a screw nut. A screw nut is provided at the front end of the screw body, and a nut seat is clamped between the screw nut and the screw fixing cover. One side of the nut seat is fixedly connected to the screw fixing cover by bolts, and one end of the screw nut is fixedly connected to the pull rod.

[0011] Preferably, an integrally formed welding block is provided at the lower end of the pull rod, a mounting hole four is opened on the welding block, and the mounting hole four is fixedly connected to the end of the lead screw nut by an adjusting clamping ring.

[0012] Preferably, the static limiting mechanism is a limiting rod, a limiting seat is provided opposite to one side of the fixed seat, a limiting rod is passed through the limiting seat, and the lower end of the limiting rod is contactably connected with the screw body.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] (1) The utility model is provided with a detachable static limit mechanism on one side of the fixed seat, and an adjustment mechanism is contactably provided on the static limit mechanism. One end of the adjustment mechanism is connected to one end of the dynamic limit mechanism. A base is provided on the other side of the fixed seat in parallel and at intervals. The base is rotatably connected to the lower end of the support rod through a lower connecting rod. A pull rod is horizontally passed through the upper middle part of the support rod. A protrusion is provided below the middle part of the support rod. The upper end of the support rod is rotatably connected to the brake assembly through an upper connecting rod, and the brake assembly can fit in contact with the outer diameter of the winch. The utility model has a compact overall structure, which saves the installation space of the existing winch brake device when the space for installation is limited. In emergency situations, the winch can be emergency-assisted braked by the cooperation of the adjustment mechanism, the dynamic limit mechanism and the brake assembly. The adjustment mechanism can realize multi-angle adjustment of the braking point position, and does not require an additional mechanical power part. It is low in cost, simple to operate, easy to disassemble and assemble, and safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an exploded view of the utility model.

[0016] Figure 2 This is a working state diagram of the utility model.

[0017] Figure 3 This is a static state diagram of the utility model.

[0018] Figure 4 For the present utility model Figure 2 side view.

[0019] Figure 5 For the present utility model Figure 3 partial structural schematic diagram. Specific embodiments

[0020] The following further describes the present utility model in conjunction with the accompanying drawings and specific embodiments.

[0021] As Figures 1 to 5 shown, an auxiliary braking device for a winch includes a fixed seat 1, an adjusting mechanism 2, a dynamic limiting mechanism 3, a brake assembly 4, a base 5, a lower connecting rod 6, a support rod 7, a pull rod 8, a convex block 9, an upper connecting rod 10, a first mounting hole 11, a nut fixing cover 12, a nut seat 13, a lead screw assembly 14, a hand wheel 15, a brake disc 16, a brake seat 17, brake pads 18, an arc-shaped through groove 19, a second mounting hole 20, a third mounting hole 21, a fixing rod 22, a bushing 23, a limit snap ring 24, a lead screw body 25, a lead screw fixing cover 26, a lead screw nut 27, a welding block 28, a fourth mounting hole 29, an adjusting snap ring 30, a limit rod 31, a limit seat 32, a winch 33, and a bolt 34.

[0022] In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0023] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0024] As Figures 1 to 5As shown, the fixed seat 1 is connected to the frame or the ground by welding. A detachable static limiting mechanism is provided on one side of the fixed seat 1, and an adjusting mechanism 2 is contactably provided on the static limiting mechanism. One end of the adjusting mechanism 2 is connected to one end of the dynamic limiting mechanism 3.

[0025] Specifically, the dynamic limiting mechanism 3 includes a base 5, a lower connecting rod 6, a support rod 7, a pull rod 8, a convex block 9, and an upper connecting rod 10. The base 5 is provided in parallel and at intervals on the other side of the fixed seat 1, and the base 5 is fixed to the frame or the ground by welding. The lower end of the support rod 7 is rotatably connected to the base 5 through the lower connecting rod 6. A pull rod 8 is horizontally fixed through the upper part of the middle of the support rod 7. A convex block 9 is provided below the middle of the support rod 7. The upper end of the support rod 7 is rotatably connected to the brake assembly 4 through the upper connecting rod 10, and the brake assembly 4 can be in fitting contact with the outer diameter of the winch 33.

[0026] The adjusting mechanism 2 includes a nut fixing cover 12, a nut seat 13, a lead screw assembly 14, and a handwheel 15. Mounting holes 11 are opened on both sides of the upper end of the fixed seat 1. The nut fixing cover 12 is provided in the mounting holes 11, and the nut fixing cover 12 is circumferentially fixed to the fixed seat 1 by bolts 34. The nut seat 13 is fitted and installed between the oppositely arranged nut fixing covers 12. The lead screw assembly 14 is passed through the nut seat 13. The upper end of the lead screw assembly 14 is fixedly connected to the pull rod 8, and the lower end of the lead screw assembly 14 is adaptively connected to the handwheel 15.

[0027] The brake assembly 4 includes a brake disc 16, a brake seat 17, and a brake pad 18. The brake disc 16 and the brake seat 17 are integrally formed. An arc-shaped through groove 19 is opened on the brake disc 16, and the brake pad 18 is fixedly attached in the arc-shaped through groove 19 by bolts 34. The brake seat 17 is inserted into the inner side of the upper end of the support rod 7 with a gap left therebetween.

[0028] The central angle of the brake pad 18 is less than 45°, so that the brake pad 18 can better fit the outer diameter of the winch 33 of different sizes in the working state.

[0029] Mounting holes 20 with opposite positions are provided at both the upper and lower ends of the support rod 7. Mounting holes 21 are opened on the brake seat 17. The mounting hole 20 at the upper end of the support rod 7 is connected to the mounting hole 21 through the upper connecting rod 10. The diameter of the mounting hole 21 is larger than the diameter of the mounting hole 20.

[0030] The connecting rod 10 and the lower connecting rod 6 have the same structure, both including a fixed rod 22, a bushing 23 and a limit retaining ring 24. The bushing 23 is sleeved on the fixed rod 22, and the bushing 23 is fixed to the fixed rod 22 through the limit retaining ring 24. The bushing 23 is rotatably connected to the support rod 7. In this embodiment, the relative rotational angle between the support rod 7 and the brake assembly 4 can be adjusted by adjusting the fixed rod 22. When the fixed rod 22 is fully inserted in place, the support rod 7 and the brake assembly 4 are fixed. Therefore, it can be ensured that the brake assembly 4 can effectively support the winch 33 during braking.

[0031] The lead screw assembly 14 includes a lead screw body 25, a lead screw fixing cover 26, and a lead screw nut 27. The front end of the lead screw body 25 is provided with a lead screw nut 27. A nut seat 13 is clamped between the lead screw nut 27 and the lead screw fixing cover 26. One side of the nut seat 13 is fixedly connected to the lead screw fixing cover 26 through a bolt 34. One end of the lead screw nut 27 is fixedly connected to a pull rod 8. The handwheel 15 is connected to the lead screw body 25 by a keyway connection. The lead screw body 25 is threadedly connected to the lead screw nut 27. The lead screw nut 27 is limited by the lead screw fixing cover 26. The lead screw fixing cover 26 is threadedly connected to the nut seat 13. At this time, the nut seat 13 can drive the lead screw body 25 to freely adjust the angle. When rotation needs to be restricted, it is limited by inserting the fixed rod 22 completely into the mounting hole two 20. The lead screw body 25 is fixedly connected to the pull rod 8 through an adjusting snap ring 30.

[0032] As Figure 2 and Figure 4 shown, pull out the limit rod 31. At this time, the nut seat 13 can freely rotate the angle. Manually turn the handwheel 15. At this time, the lead screw body 25 moves in a straight line towards the winch 33. The lead screw body 25 is connected to the pull rod 8. The pull rod 8 pushes the support rod 7 towards the winch 33 through the thrust of the lead screw body 25. The brake disc 16 is pushed forward by the thrust and overturning moment of the support rod 7. When the lead screw body 25 is pushed to a certain position, the brake pad 18 fits with the winch 33. The rotation direction of the winch 33 forms a reverse force against this device. When the winch 33 stops operating and is in the maximum towing state, protected by this device, the center B point of the winch 33, the center A point of the lower connecting rod 6 and the center O point of the upper connecting rod 10 form a triangular support state. The sum of the two sides of a triangle must be greater than the third side. Therefore, when the three sides of the triangle AO + BO > AB, the winch 33 can be subjected to the reverse tightening force of the brake pad 18 on the brake assembly 4.

[0033] The lower end of the pull rod 8 is provided with an integrally formed welding block 28. An installation hole four 29 is opened on the welding block 28. The installation hole four 29 is fixedly connected to the end of the lead screw nut 27 through an adjusting snap ring 30.

[0034] The static limiting mechanism is a limiting rod 31. A limiting seat 32 is oppositely arranged on one side of the fixed seat 1. The limiting rod 31 is inserted through the limiting seat 32, and the lower end of the limiting rod 31 is in contact connection with the screw rod body 25.

[0035] The working principle of the present utility model is as follows: As Figure 2 shown, pull out the limiting rod 31 and rotate the handwheel 15. At this time, the screw rod body 25 is pushed forward, the nut seat 13 follows and adjusts the angle upwards, the pull rod 8 is pushed forward, the support rod 7 tilts, and the brake disc 16 is pushed forward. At this time, the brake disc 16 has moved away from the limiting point of the support rod 7, and the brake pad 18 gradually fits the winch 33. When the screw rod body 25 reaches the predetermined stroke, the brake disc 16 presses against the winch 33 and becomes tighter and tighter under the reaction force. At this time, the winch 33 is in a state of prohibited dragging and can fit well with the outer diameter of the winch 33 for braking;

[0036] When the armored cable of the winch 33 needs to be recovered, rotate the handwheel 15 in the reverse direction to pull back the dynamic limiting mechanism 3, and then insert the limiting rod 31 so that the screw rod fixing cover 26 abuts against the limiting rod 31. At this time, the lower end of the brake disc 16 abuts against the convex block 9, as Figure 2 and Figure 5 shown, to keep the dynamic limiting mechanism 3 in a relatively static state.

[0037] It should be explained that the bolts 34 used in this embodiment are all standard parts in the prior art. The present utility model does not improve the structure of the bolts 34. Therefore, the bolts 34 installed on different components are not distinguished and marked in this embodiment. The specific installation positions of the bolts 34 shall be subject to the positions in the accompanying drawings of the specification.

[0038] The overall structure of the present utility model is compact, saving the installation space of the existing winch braking device under the condition of limited space addition. In case of emergencies, the winch 33 is emergently assisted in braking through the cooperation of the adjusting mechanism 2, the dynamic limiting mechanism 3 and the brake assembly 4. Moreover, the adjusting mechanism 2 can realize multi-angle adjustment of the braking point position, without the need for an additional mechanical power part, with low cost, simple operation, convenient disassembly and assembly, and safety and reliability.

[0039] The above embodiments are only the preferred embodiments of the present utility model and cannot be used to limit the scope of rights of the present utility model. Therefore, the modifications, equivalent changes, improvements, etc. made according to the scope of the patent application of the present utility model still fall within the scope covered by the present utility model.

Claims

1. An auxiliary braking device for a winch, characterized in that: It includes a fixed seat (1), a static limiting mechanism, an adjusting mechanism (2), a dynamic limiting mechanism (3) and a brake assembly (4). A detachable static limiting mechanism is provided on one side of the fixed seat (1). The adjusting mechanism (2) is contactably provided on the static limiting mechanism. One end of the adjusting mechanism (2) is connected to one end of the dynamic limiting mechanism (3). The dynamic limiting mechanism (3) includes a base (5), a lower connecting rod (6), a support rod (7), a pull rod (8), a convex block (9) and an upper connecting rod (10). The base (5) is provided in parallel and at intervals on the other side of the fixed seat (1). The lower end of the support rod (7) is rotatably connected to the base (5) through the lower connecting rod (6). A pull rod (8) is horizontally and fixedly penetrated above the middle of the support rod (7). A convex block (9) is provided below the middle of the support rod (7). The upper end of the support rod (7) is rotatably connected to the brake assembly (4) through the upper connecting rod (10). The brake assembly (4) can be in fitting contact with the outer diameter of the winch (33).

2. The auxiliary braking device for a winch according to claim 1, characterized in that: The adjusting mechanism (2) includes a nut fixing cover (12), a nut seat (13), a lead screw assembly (14) and a handwheel (15). Installation holes one (11) are opened on both sides of the upper end of the fixed seat (1). The nut fixing cover (12) is provided in the installation holes one (11). The nut fixing cover (12) is fixedly connected to the fixed seat (1) circumferentially through bolts (34). The nut seat (13) is fitted and installed between the oppositely arranged nut fixing covers (12). The lead screw assembly (14) is penetrated through the nut seat (13). The upper end of the lead screw assembly (14) is fixedly connected to the pull rod (8). The lower end of the lead screw assembly (14) is fitted and connected to the handwheel (15).

3. The auxiliary braking device for a winch according to claim 2, characterized in that: The brake assembly (4) includes a brake disc (16), a brake seat (17) and brake pads (18). The brake disc (16) and the brake seat (17) are integrally formed. An arc-shaped through groove (19) is opened on the brake disc (16). The brake pads (18) are fixedly attached in the arc-shaped through groove (19) through bolts (34). The brake seat (17) is inserted into the inner side of the upper end of the support rod (7) with a gap therebetween.

4. An auxiliary braking device for a winch according to claim 3, characterized in that: The central angle of the brake pads (18) is less than 45°.

5. An auxiliary braking device for a winch according to claim 3, characterized in that: Installation holes two (20) with opposite positions are provided at both the upper and lower ends of the support rod (7). Installation holes three (21) are opened on the brake seat (17). The installation hole two (20) at the upper end of the support rod (7) is connected to the installation hole three (21) through the upper connecting rod (10). The diameter of the installation hole three (21) is larger than the diameter of the installation hole two (20).

6. The auxiliary braking device for a winch according to claim 5, characterized in that: The upper connecting rod (10) and the lower connecting rod (6) have the same structure and both include a fixed rod (22), a bushing (23) and a limit snap ring (24). The bushing (23) is sleeved on the fixed rod (22). The bushing (23) is fixed to the fixed rod (22) through the limit snap ring (24). The bushing (23) is rotatably connected to the support rod (7).

7. An auxiliary braking device for a winch according to any one of claims 4 to 6, characterized in that: The lead screw assembly (14) includes a lead screw body (25), a lead screw fixing cover (26), and a lead screw nut (27). The lead screw nut (27) is provided at the front end of the lead screw body (25). A nut seat (13) is clamped between the lead screw nut (27) and the lead screw fixing cover (26). One side of the nut seat (13) is fixedly connected to the lead screw fixing cover (26) by a bolt (34). One end of the lead screw nut (27) is fixedly connected to the pull rod (8).

8. An auxiliary braking device for a winch according to claim 7, characterized in that: A welding block (28) is integrally formed at the lower end of the pull rod (8). An installation hole four (29) is formed in the welding block (28). The installation hole four (29) is fixedly connected to the end of the lead screw nut (27) through an adjusting snap ring (30).

9. An auxiliary braking device for a winch according to claim 8, characterized in that: The static limiting mechanism is a limiting rod (31). A limiting seat (32) is oppositely arranged on one side of the fixed seat (1). The limiting rod (31) is inserted into the limiting seat (32). The lower end of the limiting rod (31) is in contact connection with the lead screw body (25).

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