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a winch

A winch and gear shaft technology, used in winches, non-mechanical drive clutches, clutches, etc., can solve the problems of limited multi-speed speed change range of the winch, slow hook lowering speed, and reduced crane operation efficiency, etc., to improve operation efficiency. Effect

Active Publication Date: 2021-07-02
WUHAN MARINE MACHINERY PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence of the frequency modulation range of the frequency conversion motor (the frequency conversion motor can achieve a maximum speed range of 2.5 times), the multi-speed range of the winch is limited
When the hook of the winch is lowered with no load, the lowering speed of the hook is slower, which reduces the efficiency of the crane operation

Method used

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Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0030] An embodiment of the present invention provides a winch, figure 1 It is a partial structural schematic diagram of a winch provided by an embodiment of the present invention, figure 2 is a side view of a winch provided by an embodiment of the present invention, such as figure 1 with figure 2 As shown, the winch includes a frame 10 , a reel 20 arranged on the frame 10 and a power mechanism 30 for driving the reel 20 to rotate. A wire rope (not shown) is wound on the reel 20, one end of the wire rope is fixed on the reel 20, and the other end of the wire rope is provided with a hook (not shown in the figure). The winch also includes a clutch mechanism 40 and a braking mechanism 50. The output end of the power mechanism 30 is i...

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PUM

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Abstract

The invention discloses a winch and belongs to the technical field of cranes. The winch includes a frame, a drum, a power mechanism for driving the drum to rotate, and a wire rope. The other end of the wire rope is provided with a hook. The winch also includes a clutch mechanism and a brake mechanism. The output end of the power mechanism and the input end of the clutch mechanism are driven One end of the reel is coaxially fixed with a large ring gear, the output end of the clutch mechanism is engaged with the transmission of the large ring gear, the braking mechanism is fixed on the frame, and the braking mechanism is used to brake the large ring gear. When the hook is lowered with no load, the clutch mechanism disconnects the transmission connection between the power mechanism and the large ring gear to prevent the rotation of the clutch mechanism from affecting the power mechanism. The brake mechanism decelerates and brakes the large ring gear, so that the hook can be lowered quickly under the action of the brake mechanism. The lowering of the hook does not need to be affected by the frequency range of the frequency conversion motor. The ratio of the hook lowering speed to the lifting speed can exceed the speed range of the original frequency conversion motor by 2.5 times, which greatly improves the operating efficiency of the crane.

Description

technical field [0001] The invention relates to the field of hoisting machinery, in particular to a winch. Background technique [0002] In the field of crane machinery products, with the continuous expansion of the application range of crane machinery, especially in industries that require high crane operating efficiency, such as offshore cranes and wind power installation cranes, crane operating efficiency means operating costs, and the lifting of winch hooks Lifting speed and falling speed are one of the main parameters that affect the efficiency of crane operation. [0003] Usually, a variable frequency motor is used to drive the winch. By adjusting the power supply frequency of the variable frequency motor, the lifting speed and lowering speed of the winch hook can be changed to realize multi-speed operation of the winch. However, due to the influence of the frequency modulation range of the frequency conversion motor (the frequency conversion motor can achieve a speed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66D1/14B66D5/12B66D5/28B66D1/28F16D25/08
Inventor 石永科胡茂姬红斌邓祖学
Owner WUHAN MARINE MACHINERY PLANT