Crane hook falling velocity adjustment apparatus

A technology of speed adjustment and hoisting, which is applied in hoisting devices, transportation and packaging, and clockwork mechanisms. It can solve problems such as messy ropes, inability to increase the speed of hook drop, and speed up the speed of hoisting and unwinding ropes, so as to improve the hoisting load. ability, preventing rope chaos, and reducing self-weight
CN101376486AInactive Publication Date: 2009-03-04SANY AUTOMOBILE HOISTING MACHINERY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SANY AUTOMOBILE HOISTING MACHINERY
Publication Date
2009-03-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a hook-falling speed adjusting apparatus of a crane hook, which comprises a drive mechanism and a transmission organ. The transmission organ receives the source power output by the drive mechanism, and outputs the source power to an arm head pulley so as to realize the rotation of the arm head pulley. Preferably, a speed sensor and an arm head controller which are arranged on an arm head are also included; the speed sensor is used for detecting rotational speed of the arm head pulley; the arm head controller is used for receiving rotational speed signals acquired by the speed sensor, transforming the rotational speed signals into wire rope speed signals which are then compared with a preset value, and outputting a control signal to control the source power output of the drive mechanism. By the two main components that are the drive mechanism and the transmission organ, the outside power is output to the arm head pulley which drives a wire rope to raise the speed synchronously, so as to further drive the crane hook to fall fleetly. The optimal proposal realizes the hook-falling speed control through the arm head controller and the speed sensor.
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Description

technical field

[0001] The invention relates to a hoisting machine, in particular to a device for adjusting the hook-dropping speed of a crane hook. Background technique

[0002] The crane is in the condition of no-load hook drop, and the hook drop speed is one of the key performance indicators. Usually, the speed of hook drop is related to the self-weight of the hook and spreader and the wire rope magnification between hoisting and hook. The magnification of the wire rope between the winch and the hook is inversely proportional.

[0003] In the no-load hook drop condition of the crane, the problem of low operating efficiency caused by the slow drop speed of the hook often occurs; especially, when the hook drop speed is lower than the rope release speed of the winch, it is easy to cause rope disorder , The appearance of the rope disorder will make the operation unable to proceed smoothly, and will also affect the service life of the wire rope.

[0004] At present, the wor...

Claims

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