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Hydraulic control system for horizontal directional drilling machine

A technology of horizontal directional drilling rig and hydraulic control system, which is applied in the safety of fluid pressure actuation system, components of fluid pressure actuation system, mechanical equipment, etc., can solve problems such as damage to hydraulic motor 4 reducer, and achieve the effect of avoiding sudden impact.

Pending Publication Date: 2019-03-15
JIANGSU GOODENG ENG MACHINERY ASSEMBLING
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sudden reverse rotation of the hydraulic motor 4 is bound to cause damage to the hydraulic motor 4 and the reducer connected to it

Method used

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  • Hydraulic control system for horizontal directional drilling machine
  • Hydraulic control system for horizontal directional drilling machine

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Embodiment Construction

[0016] In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0017] like figure 2 As shown, the hydraulic control system for a horizontal directional drilling rig provided by the present invention includes a first three-position four-way reversing valve 1 , a second three-position four-way reversing valve 3 and a hydraulic motor 4 . Wherein: the oil inlet P of the second three-position four-way reversing valve 3 is connected to the first working oil port A of the first three-position four-way reversing valve 1 through the oil circuit, and the second three-position reversing valve 1 The first working oil port A of the four-way reversing valve 3 is connected to the second working oil port B of the first three-position four-way reversing valve 1 through an oil circuit. The hydraulic motor ...

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Abstract

The invention discloses a hydraulic control system for a horizontal directional drilling machine. The hydraulic control system comprises a first three-position four-way reversing valve, a second three-position four-way reversing valve and a hydraulic motor, wherein an oil inlet of the second three-position four-way reversing valve is connected with a first working oil opening of the first three-position four-way reversing valve through an oil way, a first working oil opening of the second three-position four-way reversing valve is connected with a second working oil opening of the first three-position four-way reversing valve through an oil way, the hydraulic motor is used for driving a drilling rod of the horizontal directional drilling machine to drill downwards and drag backwards, one end of the hydraulic motor is connected with the first working oil opening of the first three-position four-way reversing valve through an oil way, and the other end of the hydraulic motor is connectedwith the second working oil opening of the first three-position four-way reversing valve through an oil way. According to the hydraulic control system, distribution of hydraulic oil generated in thereleasing process of elastic force of the drilling rod is achieved, and sudden impact on the hydraulic motor by the hydraulic oil generated in the releasing process of the elastic force of the drilling rod is avoided.

Description

technical field [0001] The invention relates to the field of horizontal directional drilling machine manufacturing, in particular to a hydraulic control system for a horizontal directional drilling machine. Background technique [0002] Hydraulic motor drive systems are widely used in the field of construction machinery. figure 1 A hydraulic control system of a horizontal directional drilling rig in the prior art is shown. like figure 1 As shown, it includes a three-position four-way reversing valve 1 connected by an oil circuit and a hydraulic motor 4. The hydraulic motor 4 is connected with the drill pipe of the horizontal directional drilling rig and is used to drive the drill pipe to drill down and tow back, wherein: hydraulic One end of the motor 4 is connected to one working oil port A of the 4 / 3-way reversing valve 1 , and the other end of the hydraulic motor 4 is connected to the other working oil port B of the 4 / 3-way reversing valve 1 . Its action process is rou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B21/00F15B20/00
CPCF15B20/00F15B21/00
Inventor 陈凤钢戴彬胡孝新龙小平程熙石姚姚
Owner JIANGSU GOODENG ENG MACHINERY ASSEMBLING
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