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Pilot control module, pilot brake control system and construction machinery

A technology of pilot control and brake control, which is applied in the direction of brake actuators, mechanical equipment, transportation and packaging, etc., and can solve problems such as low operating efficiency, lack of humanization, and easy fatigue

Active Publication Date: 2015-08-05
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of control system is not humane enough, and the operator is tired of going back and forth between the control room and the outside, which makes the operation efficiency low and prone to fatigue

Method used

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  • Pilot control module, pilot brake control system and construction machinery
  • Pilot control module, pilot brake control system and construction machinery
  • Pilot control module, pilot brake control system and construction machinery

Examples

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Embodiment Construction

[0035] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0036] figure 1Shown is a hydraulic schematic diagram of a crane slewing control system according to the prior art. Among them, the slewing control system includes a pilot pressure oil source 1, a first pilot handle 2, a second pilot handle 2', a brake valve 6, a brake cylinder 7, and a slewing motor 8 (that is, a slewing motor used to drive the slewing mechanism to turn) ), control valve 9 and working pressure oil source 10. The pilot pressure oil source 1 provides pilot hydraulic oil, and the working pressure oil source 10 provides hydraulic oil for the working circuit of the swing motor 8. The function of the first pilot handle 2 and the second pilot handle...

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PUM

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Abstract

The invention discloses a pilot control module, a pilot brake control system and engineering machinery. The pilot brake control system comprises a pilot pressure oil source (1), pilot handles (2, 2'), pilot switch valves (3, 3'), shuttle valves (4, 4'), an electric control switch valve (5), a brake valve (6), a brake cylinder (7), a rotary motor (8), a control valve (9) and a working pressure oil source (10), wherein first oil inlets of the shuttle valves are connected to the pressure oil source through the pilot handles and the pilot switch valves on a pilot handle oil path; second oil inlets of the shuttle valves are connected to the pressure oil source through the electric control switch valve (5) on an electric control oil path; oil outlets of the shuttle valves are communicated to a control port of the brake valve (6) and a control port of the control valve (9); and the electric control switch valve is linked with the pilot switch valves to ensure that the one of the pilot handle oil path and the electric control switch oil path is closed when the one of the pilot handle oil path and the electric control switch oil path is conducted. The pilot brake control system is capable of conveniently carrying out interchange operation by using a pilot handle mode or an electric control mode and realizing interlocking, and is safe and reliable.

Description

technical field [0001] The invention relates to a pilot braking control system of engineering machinery, in particular to a pilot braking control system used for crane slewing control. Background technique [0002] The movements of the four mechanisms of the truck crane with hydraulic control pilot, such as slewing, luffing, telescopic and hoisting, are all realized by manipulating the hydraulic control pilot handle. The hydraulic control pilot handle is generally installed on both sides of the armrest box in the control room, and the operator sits in the control room to complete various actions. For hydraulic control pilot truck cranes with movable counterweights, the lifting and lowering of movable counterweights are generally controlled by electrical control boxes. The operator stands behind the movable counterweights, holds the control box, and manipulates the buttons of the control box to complete the movable counterweights. promotion and devolution. During the proces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02F15B13/043F16D65/14B66C13/20F16D121/02
Inventor 熊智勇李永星宋建清刘强
Owner ZOOMLION HEAVY IND CO LTD
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