Adjustable hydraulic support leg device

A hydraulic outrigger and joint technology, applied in the direction of supporting devices, drilling equipment, earthwork drilling and mining, etc., can solve the problems of vehicle body deflection, high cost of hydraulic lock quality control, etc., to ensure stability, reduce production costs and maintenance costs, The effect of easy operation
CN102767339AActive Publication Date: 2012-11-07ATLAS COPCO NANJING CONSTR & MINING EQUIP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ATLAS COPCO NANJING CONSTR & MINING EQUIP
Publication Date
2012-11-07

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Abstract

The invention discloses an adjustable hydraulic support leg device. The adjustable hydraulic support leg device comprises an outer barrel, an inner barrel and an oil cylinder, wherein the oil cylinder comprises a cylinder body and a piston rod; the lower end of the piston rod extends out of the cylinder body; the outer barrel is fixedly connected with the cylinder body; the lower end of the piston rod is connected with the upper end of the inner barrel; the outer barrel is covered outside the inner barrel and the oil cylinder; at least one first pin hole is formed in the outer barrel; a second pin hole which is matched with the first pin hole is formed in the inner barrel; and the first pin hole and the corresponding second pin hole are provided with a connecting piece for connecting the inner barrel and the outer barrel in a through manner. The adjustable hydraulic support leg device is only locked by a mechanical device when the piston rod drives the outer barrel to upwards extend to the needed working status, and the oil cylinder is free from vehicle body gravity, so that the requirements to a hydraulic lock can be reduced.
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Description

technical field

[0001] The invention relates to a support leg device, in particular to an adjustable hydraulic support leg device with mechanical self-locking used on a core drilling rig. Background technique

[0002] Core drilling rigs are deep hole drilling equipment in the fields of geological prospecting, hydrological water wells, coal field geological exploration, oil and natural gas exploration and development.

[0003] The core drilling rig needs to use outriggers to support the body when it is working. The traditional method is to use 4 hydraulic cylinders. The outer cylinders of the hydraulic cylinders are fixedly connected to the frame, and the body is lifted by the expansion and contraction of the piston rod.

[0004] The traditional hydraulic cylinder support method, after adjusting the body to a certain position, relies on the two-way hydraulic lock to lock the hydraulic cylinder and bear the gravity to stabilize the body. In order to ensure the stability of the...

Claims

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