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Braking device and winch system

A braking device and braking equipment technology, which is applied in hoisting devices, spring mechanisms, etc., can solve the problems of low reliability and inability to achieve flexible deceleration of lifted objects, and achieve fast response, simple structure, The effect of removing the electronic control link

Pending Publication Date: 2018-12-28
BEIJING MATERIALS HANDLING TECH INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the problem that the brake in the prior art has time delay, low reliability, and cannot achieve flexible deceleration by the lifted object.

Method used

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  • Braking device and winch system
  • Braking device and winch system
  • Braking device and winch system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 As shown, the present invention provides a braking device, which includes a pumping unit 1 and a cut-off unit, the cut-off unit includes a reducing tube 2-1, a throttle ball 2-2 and an elastic member 2-3, the pump The inlet and outlet of the delivery unit 1 are respectively communicated with the two ends of the reducing pipe 2-1 to form a circulation loop; the pumping unit 1 is connected with the equipment to be braked and used to drive the circulation loop under the drive of the equipment to be braked The liquid working medium circulates; the throttling ball 2-2 is arranged between the variable diameter of the variable diameter tube 2-1 and the pumping unit 1, and is used to block the variable diameter tube 2-1 under the drive of the liquid working medium Diameter reduction; that is to say, the diameter of the throttle ball 2-2 is not less than the inner diameter of the diameter reduction pipe; the two ends of the elastic member 2-3 are respectively co...

Embodiment 2

[0036] Such as image 3 As shown, the structure and principle of the braking device in this embodiment are the same as those in Embodiment 1, and will not be repeated in this embodiment.

[0037] The difference is that there are two cut-off units in this embodiment, the pumping unit 1 and the two cut-off units are connected end to end in turn, and the two throttling balls 2-2 are respectively located at both ends of the pumping unit 1 and the corresponding between the diameter reducing places of the reducing pipe 2-1.

[0038] Therefore, when the braking equipment is rotating forward, that is, when the liquid working medium flows clockwise, the upper end of the pumping unit 1 is the outlet and the lower end is the inlet. The throttling ball 2-2, that is, the throttling ball 2-2 on the top will block the variable diameter place of its variable diameter tube 2-1 under the drive of the liquid working medium, and then the braking of the equipment to be braked can be realized.

...

Embodiment 3

[0041] The invention provides a hoisting system, which comprises a hoist, an electromagnetic brake, a controller, a flow velocity detector and the above-mentioned brake device, the flow velocity detector is inserted in the circulation loop, and the controller is connected with the flow velocity detector respectively. It is electrically connected with the electromagnetic brake. The structure and principle of the braking device in this embodiment are the same as those in Embodiment 1 and Embodiment 2, and will not be repeated in this embodiment.

[0042] Thus, when the flow rate detector detects that the flow rate of the liquid working medium in the circulation loop is greater than the specified value, the controller controls the electromagnetic brake to brake the winch; When reaching a certain value, the throttling ball 2-2 will block the reducing pipe 2-1, and the circulation loop will be blocked, so that the pumping unit 1 will be forced to stop, and then the hoisting machine...

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Abstract

The invention relates to the technical field of cranes, and provides a braking device and a winch system. The braking device comprises a pumping unit and a stopping unit. The stopping unit comprises avariable diameter pipe, a throttling ball and an elastic piece. An inlet and an outlet of the pumping unit communicate with the two ends of the variable diameter pipe correspondingly to form a circulation loop. The pumping unit is connected with to-be-braked equipment to drive a liquid working medium in the circulation loop to flow under driving of the to-be-braked equipment. The throttling ballis arranged between the variable diameter position of the variable diameter pipe and the pumping unit to block the variable diameter position of the variable diameter pipe under driving of the liquidworking medium. The two ends of the elastic piece are connected with the throttling ball and the variable diameter pipe correspondingly to drive the throttling ball to open the variable diameter position of the variable diameter pipe. Flexible deceleration of a hoisted object can be achieved, the hoisted object is prevented from falling at a high speed, the electric control link is omitted, a winch indirectly controls the throttling ball to open or block the variable diameter position of the variable diameter pipe at the rotating speed of the winch, the response speed is high, and the reliability is high.

Description

technical field [0001] The invention relates to the technical field of cranes, in particular to a braking device and a winch system. Background technique [0002] In the technical field of hoisting machinery engineering, the hoist is one of the most important mechanical transmission components. When the crane lifts heavy objects, the object to be lifted is suspended by a wire rope hook, and the wire rope is wound on the reel of the winch, and the reel can retract the wire rope by rotating in the forward and reverse directions, and then the object to be lifted can be lifted and lowered freely in the air . However, when the front mechanism of the hoist drum fails, the lifted object will fall quickly. In order to reduce the falling speed of the lifted object and make it finally stop, a brake is usually connected to the hoist. [0003] At present, electromagnetic brakes are the most commonly used. Electromagnetic brakes rely on spring pressure and friction plates to brake the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66D1/08B66D1/28B66D5/30
CPCB66D1/08B66D1/28B66D5/30
Inventor 杨世忠王正勇段勇王惠泉包龙飞
Owner BEIJING MATERIALS HANDLING TECH INST CO LTD
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