Winch brake device

A technology of a braking device and a winch, applied in the field of the braking device of the winch, can solve the problems of unsatisfactory service life and braking reliability, short service life of the coil expansion winch, insufficient safety of the mechanical handbrake, etc. Improved braking response, simple structure

Inactive Publication Date: 2012-10-17
ZHEJIANG NOWVOW MECHANICAL & ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many kinds of brake devices for winches, such as mechanical hand brake, hydraulic brake, electromagnetic brake, mechanical automatic brake, etc. The safety of mechanical hand brake is not enough and accidents are prone to occur, while the cost of hydraulic and electromagnetic brakes is relatively high.
Mechanical automatic brakes include cone drum type, expansion ring type and ratchet type, each of which has its own characteristics, but the expansion coil type winch has a short service life, while ordinary ratchet winches are prone to noise, and the cone drum type is applied to the winch from the work of the winch. Compared with the other two brakes in terms of performance and service life, it is not very ideal in terms of long-term service life and braking reliability.
Moreover, the above three types of brakes also have a common disadvantage, that is, they generate a lot of heat during work, and it is difficult to dissipate heat, which accelerates the damage of the winch.
Therefore we are sternly aware that in order to ensure the safety of field driving, the winch in the prior art is still difficult to be reassuring, and it is necessary to invent a brake that can overcome the above-mentioned shortcomings and can better satisfy the working performance of the winch. brake

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] refer to figure 1 , 2 , a winch braking device, including a brake shaft 1, the brake shaft 1 is installed in turn from left to right with an outer brake cone 21, a brake hub 23, an inner brake cone 22, a screw clutch mechanism 3 and a brake coupling sleeve 4.

[0028] Outer brake cone 21: it is a hollow conical body, and the hollow part is an approximately oblate through hole 210;

[0029] Inner brake cone 22: it is also a hollow conical body, and the hollow part is a stepped hole 220;

[0030] Brake hub 23: it is a gear part, and its axial two sides are provided with inclined surfaces that cooperate with the outer brake cone 21 and the inner brake cone 22, and the outer ring of the brake hub 23 is provided with key teeth;

[0031] combine image 3 , Spiral clutch mechanism 3: composed of a first twist sleeve 31 and a second twist sleeve 32, one end of the first twist sleeve 31 is provided with an axial protrusion to form a helical surface, and the second twist sleev...

Embodiment 2

[0045] refer to Figure 5 , the structure of this embodiment is roughly the same as that of Embodiment 1, and the similarities will not be described in detail again. The difference is that the winch brake device also includes an outer friction plate 26 arranged between the end of the brake shaft 1 and the outer brake cone 21. And inner friction plate 25. With reference to the working principle of Embodiment 1, in the winch braking process of this embodiment, under the action of the screw clutch mechanism 3, the outer friction plate 26, the inner friction plate 25, the outer brake cone 21, the brake hub 23, and the inner brake cone The pressure between 22 becomes tighter and tighter, and the brake hub 23 brakes. Since the brake hub 23 engages with the key teeth of the reel 6, the reel 6 is also effectively braked; in addition, the outer ring of the inner friction plate 25 is provided with key teeth , The inner friction plate 25 meshes with the key teeth of the reel 6 to play t...

Embodiment 3

[0047] refer to Figure 6 , The capstan braking device of the present invention can also be simply transformed as follows: the inner brake cone 22 is changed into a disc shape, and the first torsion sleeve 31 and the inner brake cone 22 are integrally formed. For the rest of the structure and working principle of the winch braking device in this embodiment, reference may be made to Embodiment 1 or Embodiment 2, and no further details will be given.

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Abstract

The invention discloses a winch brake device which comprises a brake shaft, an outer brake cone plate, an inner brake cone plate, a brake hub, a spiral clutch mechanism and a brake coupling band, wherein the outer brake cone plate, the inner brake cone plate, the brake hub, the spiral clutch mechanism and the brake coupling band are arranged on the brake shaft; a brake drum is meshed with drum key teeth of the winch; the brake shaft drives the spiral clutch mechanism to separate; the outer brake cone plate and the inner brake cone plate respectively clamp the brake hub by the separating process of the spiral clutch mechanism; the outer brake cone plate and the inner brake cone plate are adopted to clamp the brake hub; and the brake hub and the cone plate are in conical contact, the area is larger, the friction force is increased, and brake is reliable. Compared with the existing conical drum tensioning brake, the brake hub is meshed with the drum key teeth of the winch, so the brake force loss is small, the brake response is effectively improved, and the brake performance of the winch is comprehensively improved.

Description

technical field [0001] The invention relates to a winch, in particular to a braking device for the winch. Background technique [0002] There are many types of winches, including all kinds of leisure off-road vehicle marine winches, all kinds of special engineering winches, various military special-purpose winches and other special winches for various industries, etc., which are widely used in leisure off-road, engineering rescue, metallurgy, exploration, forestry, animal husbandry, fishery and Petroleum, mineral mining, etc. Among them, recreational off-road is the main market for winches, which are self-protection and traction devices for vehicles and ships. At present, domestic and foreign winches are usually composed of motors, drums, brakes, reducers, clutches, controllers, wire ropes and some corresponding accessories. Among them, the winch brake is an important part of the winch. It is required that the brake automatically respond when the winch stops working, so as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66D5/08B66D5/14
Inventor 张国纲汤良道
Owner ZHEJIANG NOWVOW MECHANICAL & ELECTRICAL
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