Engineering machinery and gear control device thereof

A technology for control devices and engineering machinery, which is applied in the direction of mechanical equipment, transmission device control, and components with teeth, etc., and can solve problems such as non-stop faults, high maintenance costs, and chaotic gears.

Inactive Publication Date: 2010-07-21
CHINA COAL ENERGY HEILONGJIANG COAL CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Since the current of each output signal of the gear selector 1 must not exceed 0.5A, and the input of the gear selector 1 only when the current exceeds 3A, the insurance can work, and each of the above actual conditions will lead to the output of the faulty branch The current seriously exceeds the allowable range; in addition, the gear selector 1 directly controls the solenoid valve 2, and a self-induction current will be generated at the moment of shifting gears. At this time, the output current of the gear selector 1 seriously impacts its internal electrical components, causing burnout
[0011] This means that when the output signal of the gear selector directly controls the solenoid valve, t

Method used

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  • Engineering machinery and gear control device thereof
  • Engineering machinery and gear control device thereof
  • Engineering machinery and gear control device thereof

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Embodiment Construction

[0036] The core of the present invention is to provide a gear control device. The gear selector of the device controls the shift solenoid valve of the gear shift clutch through a relay, changing the traditional direct control into indirect control, thereby realizing the protection of the gear selector on the circuit and avoiding the gear selector Burning occurs during use, thereby avoiding chaotic or no-block faults. Another core of the present invention is to provide a construction machine including the above gear control device.

[0037] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] Please refer to figure 2 , figure 2 It is a schematic diagram of the circuit principle of the gear control device provided by the present invention.

[0039] In a specific embodiment, the ge...

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Abstract

The invention discloses a gear control device used for an engineering machinery. The gear control device comprises a gear selector, gear change electromagnetic valves and relays of which the number is the same with that of the gear change electromagnetic valves, wherein the control ends of the relays are respectively connected with the output branches at the output end of the gear selector, and the output ends of the relays are respectively connected with the controlled branches of the gear change electromagnetic valves. The device realizes the protection to the gear selector on the circuit, and can prevent the gear selector from the burning loss phenomenon in the use process, thereby avoiding the random-gear or zero-gear failure. The invention also discloses engineering machinery comprising the gear control device.

Description

technical field [0001] The invention relates to the technical field of construction machinery, in particular to a gear control device for construction machinery. The present invention also relates to a construction machine comprising the above gear control device. Background technique [0002] Due to the complex operation objects of construction machinery, frequent shifting operations, and high labor intensity of the driver, the shifting operation of construction machinery is constantly developing in the direction of automation. [0003] The shift control system usually consists of a gear selector, a shift solenoid valve, a shift hydraulic system, and a shift clutch, among which the gear selector is a special electrical component used for reversing and shifting operations on the gearbox. [0004] The gear selector is equipped with a photoelectric coupler inside. When the operating handle is in different gears, the corresponding group control signal is output through logical...

Claims

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Application Information

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IPC IPC(8): F16H59/02F16H61/00
Inventor 许延春
Owner CHINA COAL ENERGY HEILONGJIANG COAL CHEM
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