Top rushing prevention limiting mechanism for winch

Abstract

The utility model discloses an anti-collision limiting mechanism for a winch, the winch comprises a mounting seat, a winch, a traction rope, a stop block and a hook, the winch is rotatably arranged in the mounting seat, the traction rope is wound on the winch, and one end of the traction rope is sleeved with the stop block and is fixedly connected with the hook; the top-rushing-preventing limiting mechanism is movably connected with the mounting base, the top-rushing-preventing limiting mechanism is located between the winch and the hook, the top-rushing-preventing limiting mechanism comprises at least one limiting friction block, and when the winch rotates to wind the traction rope and the check block abuts against the top-rushing-preventing limiting mechanism, the limiting friction block can be driven to abut against the winch; the winch is limited to rotate around the axis of the winch. The problem that in the using process of the winch, due to misoperation of workers or faults of equipment, a traction rope is completely pulled into the winch, and the winch is possibly damaged is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of winches, and particularly relates to an anti-overtravel limit mechanism for a winch. Background Technique

[0002] A winch is a hoisting device that winds a steel wire rope or a chain around a winch drum to lift or tow heavy objects. The working principle of the winch is very simple: a motor or an internal combustion engine provides power, and after being decelerated by a speed reducer, it drives the winch drum to rotate. A steel wire rope or a chain is wound around the winch drum. When the winch drum rotates, the steel wire rope or the chain will be wound up or let out, so as to realize the lifting or towing of heavy objects.

[0003] The application of winches is very extensive. For example, on construction sites, it can be used to lift building materials such as bricks, steel, and concrete; in mining sites, it can be used to lift ores; in ports, it can be used to load and unload goods; in water conservancy projects, it can be used to open and close gates, etc.

[0004] During the use of the winch, due to the misoperation of the staff or the failure of the equipment itself, the steel wire rope or the chain may be pulled out or pulled in excessively, which may cause equipment damage or safety accidents. Especially when recovering the steel wire rope, if it is all pulled into the winch drum, it may cause equipment damage and affect the service life of the equipment. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the above technical deficiencies, and provide an anti-overtravel limit mechanism for a winch, so as to solve the problem that during the use of the winch, due to the misoperation of the staff or the failure of the equipment itself, the towing rope is all pulled into the winch drum, which may cause damage to the winch.

[0006] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides an anti-overtravel limit mechanism for a winch. The winch includes a mounting base, a winch drum, a towing rope, a stop block, and a hook. The winch drum is rotatably arranged in the mounting base. The towing rope is wound around the winch drum, and one end of the towing rope is sleeved with the stop block and fixedly connected to the hook. The anti-overtravel limit mechanism is movably connected to the mounting base, and the anti-overtravel limit mechanism is located between the winch drum and the hook. The anti-overtravel limit mechanism includes at least one limit friction block. When the winch drum rotates to wind up the towing rope and the stop block abuts against the anti-overtravel limit mechanism, the limit friction block can be driven to abut against the winch drum to limit the rotation of the winch drum around its own axis.

[0008] In some embodiments, the mounting seat includes two side plates and a fixing rod connected between the two side plates. The winch is rotatably disposed between the two side plates, and the anti-overstroke limiting mechanism is movably disposed between the two side plates.

[0009] In some embodiments, a plurality of reinforcing rods are further connected between the two side plates.

[0010] In some embodiments, the anti-overstroke limiting mechanism includes at least one buffer member. The buffer member includes an upper bracket, a limiting plate, a lower bracket, a guide rod, a spring, and a locking block. The upper bracket is fixedly connected to one of the side plates. One side of the limiting plate is hinged to the fixing rod, and the other side of the limiting plate is fixedly connected to the lower bracket. The lower end of the guide rod is fixedly connected to the lower bracket. The guide rod passes through the upper bracket and is threadedly and rotatably connected to the locking block at the upper end. The spring is sleeved on the guide rod, and the spring is located between the upper bracket and the lower bracket. The limiting friction block is fixedly disposed on the limiting plate, and the stopper can abut against the limiting plate.

[0011] In some embodiments, the winch includes a rotating shaft rotatably connected between the two side plates and two baffles fixedly disposed at intervals on the rotating shaft. The limiting friction block can abut against one of the baffles.

[0012] In some embodiments, the stopper includes two semi-circular connecting blocks fixedly connected, and grooves are formed on the sides of the two semi-circular connecting blocks close to each other. The towing rope passes through a through hole formed by enclosing the two grooves.

[0013] In some embodiments, the winch also includes a reduction motor. The reduction motor is fixedly disposed on one of the side plates, and the output end of the reduction motor is connected to one end of the rotating shaft.

[0014] In some embodiments, a card slot is formed on the side of the limiting friction block abutting against the baffle, and the baffle can be clamped in the card slot.

[0015] In some embodiments, the limiting friction block is an elastic rubber friction block.

[0016] In some embodiments, the towing rope is a steel wire rope.

[0017] Compared with the prior art, a top - impact prevention and limit mechanism for a winch provided by the utility model has a winch rotatably arranged in a mounting seat, a traction rope wound around the winch, and a stop block sleeved at one end of the traction rope and fixedly connected to a hook. The top - impact prevention and limit mechanism is movably connected to the mounting seat and is located between the winch and the hook. The top - impact prevention and limit mechanism includes at least one limit friction block. When the winch rotates to wind up the traction rope and the stop block abuts against the top - impact prevention and limit mechanism, the limit friction block can be driven to abut against the winch to limit the winch from rotating around its own axis, thereby preventing the traction rope from being completely pulled into the winch, effectively realizing the slow stop of the winch, and prolonging the service life of the winch. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 6 is a schematic structural diagram of a top - impact prevention and limit mechanism for a winch provided by an embodiment of the utility model;

[0019] Figure 2 FIG. 10 is a front view of a top - impact prevention and limit mechanism for a winch provided by an embodiment of the utility model;

[0020] Figure 3 FIG. 14 is a schematic structural diagram of a top - impact prevention and limit mechanism for a winch provided by an embodiment of the utility model from another perspective;

[0021] Figure 4 FIG. Figure 3 is an enlarged schematic view of area A in FIG. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the objectives, technical solutions and advantages of the utility model clearer, the following further describes the utility model in detail with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0023] In order to solve the technical problem that during the use of a winch, due to the misoperation of the staff or the failure of the equipment itself, the traction rope is completely pulled into the winch, which may cause damage to the winch, the utility model provides a top - impact prevention and limit mechanism for a winch, which can realize the slow - stop protection of the winch.

[0024] Please refer to Figures 1 - 4, in an embodiment of the present utility model, an anti-overstroke limiting mechanism for a winch, the winch 1 includes a mounting base 11, a winch drum 12, a towing rope 13, a stop block 14 and a hook 15. The winch drum 12 is rotatably arranged in the mounting base 11. The towing rope 13 is wound around the winch drum 12, and one end of the towing rope 13 is sleeved with the stop block 14 and fixedly connected to the hook 15. The anti-overstroke limiting mechanism 2 is movably connected to the mounting base 11, and the anti-overstroke limiting mechanism 2 is located between the winch drum 12 and the hook 15. The anti-overstroke limiting mechanism 2 includes at least one limiting friction block 20. When the winch drum 12 rotates to wind up the towing rope 13 and the stop block 14 abuts against the anti-overstroke limiting mechanism, the limiting friction block 20 can be driven to abut against the winch drum 12 to limit the rotation of the winch drum 12 about its own axis.

[0025] On the basis of the above solution, the winch further includes a reduction motor 16. The reduction motor 16 is fixedly arranged on one of the side plates 111, and the output end of the reduction motor 16 is connected to one end of the rotating shaft 121. The winch drum 12 is driven to rotate by the reduction motor 16 to pay out or pull in the towing rope 13. In this specific embodiment, the towing rope 13 is a steel wire rope. Of course, in other embodiments, the towing rope 13 can also be a chain.

[0026] It should be noted that the mounting base 11 includes two side plates 111 and a fixing rod 112 connected between the two side plates 111. The winch drum 12 is rotatably arranged between the two side plates 111, and the anti-overstroke limiting mechanism is movably arranged between the two side plates 111. In this specific embodiment, the number of the fixing rods 112 is two.

[0027] On the basis of the above solution, in order to improve the structural strength of the mounting base, specifically, a plurality of reinforcing rods 113 are further connected between the two side plates 111.

[0028] In one embodiment, please refer to Figure 1 and Figure 3, the anti-overtravel limiting mechanism 2 includes at least one buffer member 21, and the buffer member 21 includes an upper bracket 211, a limit plate 212, a lower bracket 213, a guide rod 214, a spring 215 and a locking block 216. The upper bracket 211 is fixedly connected to one of the side plates 111. One side of the limit plate 212 is hinged to the fixed rod 112, and the other side of the limit plate 212 is fixedly connected to the lower bracket 213. The lower end of the guide rod 214 is fixedly connected to the lower bracket 213. The guide rod 214 passes through the upper bracket 211 and its upper end is threadedly rotatably connected to the locking block 216. The spring 215 is sleeved on the guide rod 214, and the spring 215 is located between the upper bracket 211 and the lower bracket 213. The limit friction block 20 is fixedly arranged on the limit plate 212, and the stop block 14 can abut against the limit plate 212.

[0029] In other embodiments, the anti-overtravel limiting mechanism 2 includes two buffer members 21. The structures of the two buffer members 21 are the same, and the two buffer members 21 are arranged at intervals in the mounting seat 11, that is, the other buffer member 21 is connected between the other side plate 111 and the fixed rod 112.

[0030] In this specific embodiment, the winch 12 includes a rotating shaft 121 rotatably connected between the two side plates 111, and two baffles 122 fixedly arranged at intervals on the rotating shaft. The limit friction block 20 can abut against one of the baffles 122.

[0031] It should be noted that when the number of the two buffer members 21 is two, the stop block 14 can abut against the limit plate, and the two limit friction blocks 20 are respectively driven to abut against the two baffles 122 to realize the slow stop of the winch 12.

[0032] Wherein, a card slot is formed on the side of the limit friction block 20 that abuts against the baffle 122, and the baffle 122 can be clamped in the card slot. In addition, the limit friction block 20 is made of an elastic rubber block.

[0033] In this specific embodiment, the stop block 14 includes two semi-circular connection blocks 141 fixedly connected, and grooves 142 are formed on the sides of the two semi-circular connection blocks 141 close to each other. The towing rope 13 passes through the through hole formed by enclosing the two grooves 142. It should be noted that flanges are arranged on the opposite sides of the two semi-circular connection blocks 141, and connection holes are formed on the flanges. Bolts can be passed through the two connection holes corresponding to the two flanges and screwed with nuts to fix the two semi-circular connection blocks 141.

[0034] The specific embodiments of the present utility model described above do not constitute a limitation on the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. An anti-top limit mechanism for a winch, the winch comprising a mounting seat, a winch, a traction rope, a stopper and a hook, the winch is rotatably arranged in the mounting seat, the traction rope is wound around the winch, and one end of the traction rope is sleeved with the stopper and fixedly connected to the hook; characterized in that: The anti-impact limiting mechanism is movably connected to the mounting seat, and the anti-impact limiting mechanism is located between the winch and the hook. The anti-impact limiting mechanism includes at least one limiting friction block. When the winch rotates to reel in the traction rope and the block abuts against the anti-impact limiting mechanism, the limiting friction block can be driven to abut against the winch to limit the winch from rotating around its own axis.

2. The anti-top limit mechanism for a winch according to claim 1, characterized in that: The mounting seat comprises two side plates and a fixing rod connected between the two side plates. The winch is rotatably arranged between the two side plates, and the anti-collision top limiting mechanism is movably arranged between the two side plates.

3. The anti-top limit mechanism for a winch according to claim 2, characterized in that: A plurality of reinforcing rods are also connected between the two side plates.

4. The anti-top limit mechanism for a winch according to claim 3, characterized in that: The anti-collision top limiting mechanism includes at least one buffer member, and the buffer member includes an upper bracket, a limit plate, a lower bracket, a guide rod, a spring and a locking block. The upper bracket is fixedly connected to one of the side plates, one side of the limit plate is hinged to the fixing rod, the other side of the limit plate is fixedly connected to the lower bracket, the lower end of the guide rod is fixedly connected to the lower bracket, the guide rod is penetrated into the upper bracket and the upper end is threadedly rotatably connected to the locking block, the spring is sleeved on the guide rod, and the spring is located between the upper bracket and the lower bracket, the limit friction block is fixedly mounted on the limit plate, and the stop block can abut against the limit plate.

5. The anti-top-impact limiting mechanism for a winch according to claim 4, characterized in that: The winch comprises a rotating shaft rotatably connected between the two side plates, and two baffles fixedly arranged on the rotating shaft at intervals, and the limiting friction block can conflict with one of the baffles.

6. The anti-top limit mechanism for a winch according to claim 1, characterized in that: The stopper includes two semicircular connecting blocks which are fixedly connected, and grooves are provided on the adjacent sides of the two semicircular connecting blocks, and the traction rope is passed through a through hole formed by the two grooves.

7. The anti-top limit mechanism for a winch according to claim 5, characterized in that: The hoist also includes a reduction motor, which is fixed on one of the side plates, and an output end of the reduction motor is connected to one end of the rotating shaft.

8. The anti-top limit mechanism for a winch according to claim 5, characterized in that: A clamping groove is provided on one side of the position-limiting friction block abutting against the baffle plate, and the baffle plate can be clamped in the clamping groove.

9. The anti-top limit mechanism for a winch according to claim 1, characterized in that: The limiting friction block is an elastic rubber friction block.

10. The anti-top limit mechanism for a winch according to claim 1, characterized in that: The traction rope is a steel wire rope.

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