Automatic control method and device for crane rotary parking brake system

An automatic control device and braking system technology, which is applied to cranes, fluid pressure actuating devices, mechanical equipment, etc., can solve problems such as inconvenient operation, failure to close the brake in time, hidden dangers, etc., and achieve the effect of increasing safety

Pending Publication Date: 2021-06-11
XCMG CONSTR MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an automatic control method and device for the crane slewing parking brake system, ...

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  • Automatic control method and device for crane rotary parking brake system
  • Automatic control method and device for crane rotary parking brake system
  • Automatic control method and device for crane rotary parking brake system

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0036] In the description of the patent of the present invention, it should be noted that the terms "comprising", "comprising" or any other variant thereof are intended to cover a non-exclusive inclusion, except for those elements listed, and may also include elements not explicitly listed. other elements out.

[0037] In the description of the patent of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the patent of th...

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Abstract

The invention discloses an automatic control method and device for a crane rotary parking brake system. The method comprises the following steps: collecting pilot pressure output by a hydraulic control pilot handle during rotary action, and controlling an electrical loop of a brake valve to be closed if the pilot pressure is gradually increased to reach an ascending switch point, specifically, the ascending switch point is smaller than the pilot opening pressure of a rotary reversing valve; and when rotation is stopped, collecting pilot pressure output by the hydraulic control pilot handle, and if the pilot pressure is gradually reduced to reach a descending switch point, controlling the electrical loop of the brake valve to be disconnected after a set time is delayed, specifically, the descending switch point is smaller than the ascending switch point. The phenomenon that when a crane is located on the ground with the gradient, a rotary braking rocker switch or a rotary knob switch or a button switch is not turned off in time, and consequently the crane slides is effectively avoided, and the safety of the crane is improved.

Description

technical field [0001] The invention belongs to the technical field of a crane slewing parking brake system, in particular to an automatic control method for a crane slewing parking brake system, and also relates to an automatic control device for a crane slewing parking brake system. Background technique [0002] At present, the hydraulic system of crawler cranes mainly includes two transmission systems: hydraulic control and electric control. Among them, the hydraulic control system is widely used in small and medium tonnage crawler cranes due to its advantages of high reliability and low cost. It is one of the current small and medium tonnage products. Mainstream control method. In the hydraulic system, it is a typical hydraulic control system to use the pilot oil source to drive the variable of the power element and the reversing of the main control element (main valve). In the hydraulic control system, there are open system and closed system according to its oil circul...

Claims

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Application Information

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IPC IPC(8): B66C23/86F15B11/08
CPCB66C23/86F15B11/08
Inventor 陈海军丁方园何月华王惠蒋记刘林楠
Owner XCMG CONSTR MACHINERY
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