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Crane winch motor pressure memory control system and method

A winch motor and memory control technology, which is applied in the direction of winch device, transportation and packaging, spring mechanism, etc., can solve the problem of crane winch shaking, no consideration of operation speed, second drop of hoisting weight, and stable lifting In order to achieve the effect of simple structure and eliminate the problem of secondary decline

Active Publication Date: 2015-09-30
XUZHOU HEAVY MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method does not take into account the influence of the speed of operation and the size of the hoisting weight on the secondary slide and lifting stability, resulting in different operating habits of different operators, which may easily lead to problems such as hoisting vibration of the crane

Method used

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  • Crane winch motor pressure memory control system and method
  • Crane winch motor pressure memory control system and method

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Embodiment Construction

[0021] The technical scheme of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0022] A crane winch motor pressure memory control system, such as figure 1 As shown, it includes a motor 7 for lifting heavy objects, the motor 7 is electrically connected to the brake 1, and the brake 1 is connected to the constant pressure oil source 3 through the solenoid valve 2, and the constant pressure oil source 3 is used to control the brake 1 The solenoid valve 2 is connected with the controller 6, the brake 1 is turned on when the solenoid valve 2 is energized, and the brake 1 is closed when the solenoid valve 2 is de-energized. Also included is a pressure pick-up valve 5 which is connected to the controller 6 and the motor 7 respectiv...

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Abstract

The invention discloses a crane winch motor pressure memory control system and a crane winch motor pressure memory control method. By considering factors including an operation habit, the size of hanging weight and the like of an operator, a controller outputs variable braking coefficients under different working conditions, so as to control the starting time of a brake, and completely eliminate a secondary slipping-off problem; and meanwhile, the stability at the moment of starting and stopping a winch is increased.

Description

technical field [0001] The invention relates to a hoist motor pressure memory control system and method of a crane. Background technique [0002] The crane has four major actions: hoisting, telescopic, luffing and slewing. Among them, the hoisting is divided into two actions: lifting and lowering. In the process of lifting heavy objects with wheeled cranes, many working conditions need to be carried out twice. lifting operation. During the second lifting operation, due to the resistance moment of the hoisting weight, when the hydraulic motor has not established enough oil pressure to overcome the hoisting weight resistance moment, if the brake is opened at this time, the output torque of the motor will be less than that of the hoisting weight. The heavy resistance moment will cause the hoisting weight to slide down, which may lead to unpredictable dangers and losses. [0003] At this stage, the pressure memory valve is added to remember the pressure of the last lifting, an...

Claims

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Application Information

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IPC IPC(8): B66C13/20
CPCB66D1/44B66D5/28
Inventor 单增海张海燕焦国旺
Owner XUZHOU HEAVY MASCH CO LTD