Winch tightening limiting protection device

Abstract

The utility model discloses the field of automobile winches, and particularly relates to a winch tightening and limiting protection device which comprises a winch assembly, a bottom plate is arranged on the winch assembly, a limiting baffle is in sliding fit with the bottom plate, and a protruding check block is arranged on the side, close to the bottom plate, of the limiting baffle. According to the utility model, through the arrangement of the convex baffle block and the limit switch, when the tightening condition of the winch cannot be directly observed, the relay can be triggered through the contact of the convex baffle block and the limit switch, so that the power is cut off, and the safety of equipment during operation is improved; the device is simple in structure, easy and convenient to replace, low in cost and suitable for wide-range popularization.

Description

Technical Field

[0001] The utility model relates to the field of vehicle winches, in particular to a winch tightening limit protection device. Background Art

[0002] A winch is a machine with a vertically installed cable drum that can wind but not store ropes under power drive. It is a self - protection and traction device for vehicles and boats. It can perform self - rescue and rescue operations in harsh environments such as snow, swamps, deserts, beaches, and muddy mountain roads, and can also perform operations such as obstacle clearance, towing items, and installing facilities under other conditions. It is mainly used for off - road vehicles, agricultural vehicles, ATV all - terrain vehicles, yachts, fire rescue vehicles, road wreckers, and other special vehicles. However, in the existing technology, most winches on the market are driven by a single stepping motor to drive the steel rope winch, with a simple structure, no safety insurance device, and the following problems:

[0003] 1) During the winch tightening process, the circuit current increases due to the drag exceeding its actual load, resulting in circuit burnout;

[0004] 2) Most of the existing all - terrain vehicle winches are installed under the vehicle or in inconspicuous places, which is not convenient for users to observe the tightening situation. If the winch tightens the steel rope to the limit position during use and the operator fails to notice in time and continues to tighten, it will cause a sudden increase in the load of the winch motor, damaging the winch mechanism, and further resulting in an increase in current beyond the safe range of the circuit.

[0005] Therefore, those skilled in the art are committed to developing a winch tightening limit protection device. Content of the Utility Model

[0006] In view of the above - mentioned defects of the existing technology, the technical problem to be solved by the utility model is to provide a winch tightening limit protection device.

[0007] To achieve the above object, the utility model provides a winch tightening limit protection device, including a winch assembly. A bottom plate is provided on the winch assembly. A limit baffle is slidably fitted on the bottom plate. A protruding block is provided on one side of the limit baffle close to the bottom plate. A limit switch is provided on the winch assembly and is matched with the protruding block.

[0008] Preferably, first support plates and second support plates are respectively bent on two opposite sides of the bottom plate. A pin shaft is provided between the first support plate and the second support plate;

[0009] Preferably, third support plates and fourth support plates are respectively bent on two corresponding sides of the limit baffle. A first sliding groove and a second sliding groove are respectively opened on the third support plate and the fourth support plate;

[0010] Preferably, two ends of the pin shaft are respectively slidably fitted with the first sliding groove and the second sliding groove.

[0011] Preferably, the protruding stopper is fixedly connected to the side of the third support plate close to the bottom plate.

[0012] Preferably, a plurality of sliding shafts are provided on the bottom plate, and the plurality of sliding shafts extend along the side away from the bottom plate, and the sliding shafts are slidably matched with the limit baffle.

[0013] Preferably, an elastic member is sleeved on the sliding shaft, and two ends of the elastic member are respectively fixedly connected to the bottom plate and the limit baffle.

[0014] Preferably, a buffer rubber block is provided on the side of the limit baffle away from the bottom plate.

[0015] Preferably, a relay is provided in the winch assembly, and the limit switch is electrically connected to the relay.

[0016] Preferably, a circuit breaker is also provided in the winch assembly.

[0017] The beneficial effects of the present utility model are as follows: by providing a protruding stopper and a limit switch, when the tightening condition of the winch cannot be directly observed, the relay can be triggered to cut off the power by the contact of the two, thereby improving the safety of the equipment during operation. Moreover, the structure of the present utility model is simple, the replacement is simple and the cost is low, which is suitable for wide promotion. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of a specific embodiment of the present utility model.

[0019] Figure 2 is a schematic bottom structural diagram of a specific embodiment of the present utility model.

[0020] Figure 3 is a structural and circuit connection diagram of a specific embodiment of the present utility model.

[0021] 1. Winch assembly; 11. Limit switch; 2. Bottom plate; 2a. Protruding stopper; 21. First support plate; 21a. Pin shaft; 22. Second support plate; 3. Limit baffle; 31. Third support plate; 31a. First chute; 32. Fourth support plate; 32a. Second chute; 23. Sliding shaft; 23a. Elastic member; 4. Buffer rubber block; 5. Relay; 6. Circuit breaker; 7. Power supply; 8. Wire changer; 9. Switch; 10. Release working circuit; 11. Tightening working circuit. Detailed Embodiment

[0022] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It 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 manner, so it cannot be understood as a limitation to the present utility model. Terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] As Figures 1-3 shown, a winch tightening limit protection device includes a winch assembly 1. A bottom plate 2 is provided on the winch assembly 1. The bottom plate 2 provides support for the entire limit protection device. The two opposite sides of the bottom plate 2 are respectively turned 90 degrees away from the winch assembly 1 to form a first support plate 21 and a second support plate 22. A pin shaft 21a is arranged between the first support plate 21 and the second support plate 22. In this embodiment, two pin shafts 21a are arranged. In other embodiments, other numbers of pin shafts 21a can be selected according to the length of the bottom plate 2. A limit baffle 3 is provided on the side of the bottom plate 2 away from the winch assembly 1. Third support plates 31 and fourth support plates 32 are respectively bent on the two sides of the limit baffle 3 corresponding to the bottom plate 2. First chutes 31a and second chutes 32a are respectively formed on the third support plates 31 and the fourth support plates 32. The two ends of the pin shaft 21a are respectively inserted into the first chutes 31a and the second chutes 32a and are in sliding fit with the first chutes 31a and the second chutes 32a, so as to drive the limit baffle 3 to be in sliding fit with the bottom plate 2. In this embodiment, two groups of first chutes 31a and second chutes 32a are arranged corresponding to the pin shaft 21a. In other embodiments, other numbers can also be arranged. The sliding fit is a clearance fit. A protruding stop block 2a is provided on the side of the limit baffle 3 close to the bottom plate 2. The protruding stop block 2a is fixedly connected to the side of the third support plate 31 close to the bottom plate 2. A limit switch 11 is provided on the winch assembly 1 and is matched with the protruding stop block 2a. The limit switch 11 is electrically connected to a relay 5. When the limit baffle 3 slides towards the bottom plate 2, it drives the protruding stop block 2a to displace synchronously. When the protruding stop block 2a contacts the limit switch 11, the relay 5 can be triggered to cut off the power supply of the entire circuit.

[0024] In this embodiment: A plurality of sliding shafts 23 are provided on the bottom plate 2. In this embodiment, the sliding shafts 23 are set to 2 groups. In other embodiments, an appropriate number of sliding shafts 23 can be selected according to specific situations. The sliding shafts 23 extend along the side away from the bottom plate 2. An elastic member 23a is sleeved outside the sliding shafts 23. In this embodiment, the elastic member 23a is a spring. The two ends of the elastic member 23a are respectively fixedly connected to the bottom plate 2 and the limit baffle 3. When the elastic member 23a is in the free extension state, the two ends of the pin shaft 21a are respectively located on the side of the first sliding groove 31a and the second sliding groove 32a close to the bottom plate 2. The sliding shafts 23 are slidably matched with the limit baffle 3. In this embodiment, the sliding match is a clearance fit. When the limit baffle 3 moves towards the bottom plate 2 along the sliding shafts 23, the elastic member 23a is in a continuously compressed state until the protruding block 2a contacts the limit switch 11, the circuit is powered off, and the equipment stops operating. When the motor rotates in reverse, the elastic member 23a pushes the protruding block 2a to disengage from the limit switch 11 under the action of elastic recovery. A buffer rubber block 4 is further provided on the side of the limit baffle 3 away from the bottom plate 2. By setting the buffer rubber block 4, the limit baffle 3 is pushed to slide towards the bottom plate 2.

[0025] In this embodiment: It further includes a power supply 7. The power supply 7 is the power source of the equipment. In this embodiment, the winding working circuit 11 and the unwinding working circuit 10 are two different lines respectively. The switching between the winding working circuit 11 and the unwinding working circuit 10 is completed by operating the switch 9 to control the wire changer 8. The winding and unwinding of the winch are realized by the forward and reverse rotation of the motor. The circuit breaker 6 and the relay 5 are located on the winding working circuit 11. When the winch assembly 1 has an overloaded working condition, the current in the circuit will instantaneously exceed the rated current, and the circuit breaker 6 automatically disconnects the circuit to protect the safety of the entire equipment and improve the safety during the operation of the winding working circuit 11.

[0026] During use, when the towing hook steel wire rope on the winding winch assembly 1 is tightened, when the towing hook steel wire rope is tightened to the end position, the buffer rubber block 4 abuts against the limit baffle 3. Continuing to tighten the towing hook steel wire rope, the buffer rubber block 4 pushes the limit baffle 3 to displace towards the bottom plate 2 until the protruding block 2a on the limit baffle 3 contacts the limit switch 11, thereby triggering the relay 5. At this time, it is the winding limit of the winch, and the relay 5 is powered off, thereby improving the safety during the operation of the winding working circuit 11.

[0027] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention based on the concept of the present invention through logical analysis, reasoning, or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A winch tightening limit protection device, characterized in that: It includes a winch assembly (1), a bottom plate (2) is provided on the winch assembly (1), a limit baffle (3) is slidably fitted on the bottom plate (2), a protruding stop block (2a) is provided on one side of the limit baffle (3) close to the bottom plate (2), and a limit switch (11) matched with the protruding stop block (2a) is provided on the winch assembly (1).

2. The winch tightening limit protection device according to claim 1, characterized in that: First support plates (21) and second support plates (22) are bent on opposite sides of the bottom plate (2) respectively, and a pin shaft (21a) is provided between the first support plates (21) and the second support plates (22); Third support plates (31) and fourth support plates (32) are bent on corresponding sides of the limit baffle (3) respectively, and a first sliding groove (31a) and a second sliding groove (32a) are respectively formed on the third support plates (31) and the fourth support plates (32); Both ends of the pin shaft (21a) are slidably fitted with the first sliding groove (31a) and the second sliding groove (32a) respectively.

3. The winch tightening limit protection device according to claim 2, characterized in that: The protruding stop block (2a) is fixedly connected with one side of the third support plate (31) close to the bottom plate (2).

4. The winch tightening limit protection device according to claim 1, characterized in that: A plurality of sliding shafts (23) are provided on the bottom plate (2), the plurality of sliding shafts (23) extend along the side away from the bottom plate (2), and the sliding shafts (23) are slidably fitted with the limit baffle (3).

5. The winch tightening limit protection device according to claim 4, characterized in that: An elastic member (23a) is sleeved on the sliding shaft (23), and both ends of the elastic member (23a) are fixedly connected with the bottom plate (2) and the limit baffle (3) respectively.

6. The winch tightening limit protection device according to claim 1, characterized in that: A buffer rubber block (4) is provided on one side of the limit baffle (3) away from the bottom plate (2).

7. The winch tightening limit protection device according to claim 1, characterized in that: A relay (5) is provided in the winch assembly (1), and the limit switch (11) is electrically connected with the relay (5).

8. The winch tightening limit protection device according to claim 7, characterized in that: A circuit breaker (6) is also provided in the winch assembly (1).

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