Rotary drilling rig

A technology for rotary drilling rigs and drill pipes, which is applied to rotary drilling rigs, rotary drilling, mechanical equipment, etc. It can solve problems such as damage to pressurized cylinder seals, and achieve the effects of avoiding oil leakage and prolonging life

Inactive Publication Date: 2015-11-25
BEIJING SANY HEAVY MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention proposes a rotary drilling rig to solve the problems of oil leakage of the pressurized cylinder and premature damage of the seal

Method used

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  • Rotary drilling rig
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Embodiment Construction

[0021] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0022] Combine below figure 1 and figure 2 , the preferred embodiment of the present invention is described in further detail,

[0023] Such as figure 1 As shown, the rotary drilling rig of the present invention also includes two major parts of the chassis 1 and the working device. Chassis 1 comprises traveling mechanism, chassis, boarding turning mechanism, and traveling mechanism and boarding turning mechanism are installed on the chassis. The function of the traveling mechanism is to realize the walking and displacement of the drilling rig. The function of the slewing mechanism on the car is to realize the rotation of the working device.

[0024] The working device includes a luffing me...

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Abstract

The invention discloses a rotary drilling rig comprising a mast and a power head, wherein the mast is provided with a pressurized oil cylinder; one end of the pressurized oil cylinder is connected with the power head; the pressurized oil cylinder is connected with an oil inlet line and an oil return line; the oil return line is connected with an overflow valve; an oil inlet of the overflow valve is connected with the oil return line; and an overflow port of the overflow valve is connected with an oil tank. By using the rotary drilling rig, the problem of oil leakage of the pressurized oil cylinder is solved, a sealing element inside the pressurized oil cylinder is prevented from being damaged, and the service life of the pressurized oil cylinder is greatly prolonged.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a rotary drilling rig. Background technique [0002] Rotary drilling rig is a kind of construction machine for taking soil and forming holes for cast-in-place piles. It relies on the drill pipe to drive the rotary bucket to rotate and cut the soil, and then lifts to the outside of the hole to unload the soil periodically. Such as figure 1 As shown, the structure of a rotary drilling rig is functionally divided into two parts, the chassis 1 and the working device. Chassis 1 comprises traveling mechanism, chassis, boarding turning mechanism, and traveling mechanism and boarding turning mechanism are installed on the chassis. The function of the traveling mechanism is to realize the walking and displacement of the drilling rig. The function of the slewing mechanism on the car is to realize the rotation of the working device. [0003] The working device includes a luffing mec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B3/02E21B7/02F15B11/08
Inventor 齐文虎张庆彬
Owner BEIJING SANY HEAVY MASCH CO LTD
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