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A combined DTH hammer sealing and anti-loosening structure

A combined down-the-hole hammer and anti-loosening technology, which is applied in the direction of basic structure engineering, construction, sheet pile walls, etc., can solve the problems affecting the installation accuracy of the impactor, poor anti-loosening effect, small contact area, etc., and achieve friction and anti-loosening. Good loosening effect, tight fit, and large contact area

Active Publication Date: 2019-04-02
SUNWARD INTELLIGENT EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The double-nut locking method only relies on the friction force generated by the end surface contact of the nut to prevent loosening, the contact area is small, and the anti-loosening effect is not good
Welding limit clamps on the impactor mounting bracket can prevent the impactor from loosening, but the operation is inconvenient and the welding error is large, which affects the installation accuracy of the impactor

Method used

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  • A combined DTH hammer sealing and anti-loosening structure
  • A combined DTH hammer sealing and anti-loosening structure

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Embodiment Construction

[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] see figure 1 and figure 2 , insert the upper joint 10 of the impactor into the positioning taper sleeve 9, lock the upper joint 10 of the impactor with the round nut 8, put the nozzle 3 into the inner taper hole of the upper joint 10 of the impactor, seal the gasket 7 and The pressure plate 6 is set on the joint nozzle 3 in turn, the gasket 7 and the pressure plate 6 are connected to the round nut 8 with the bolt 4 and the spring washer 5, and the joint nozzle 3 is pressed down at the same time, and then the air hole damping adjustment device 2 is installed In the nozzle, it is used to adjust the intake air volume. When the combined down-the-hole hammer 1 is working, the compressed gas enters the upper joint 10 of the impactor through the nozzle 3. Since the nozzle 3 is in close contact with the conical surface of the taper ...

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Abstract

The invention discloses a combined down hole hammer sealing and anti-loosening structure. The structure includes a pore damping adjusting apparatus, a fitting, a pressure plate, a sealing gasket, a bolt, a spring gasket, a circular nut, an impactor upper joint, and a positioning taper sleeve. The impactor upper joint is locked to the positioning taper sleeve through the circular nut. The fitting is pressed against the impactor upper joint through the pressure plate, the sealing gasket, the bolt and the spring gasket. The fitting is also provided with the pore damping adjusting apparatus and can adjust the amount of air inflow. The impactor upper joint is in conical surface contact with the fitting and the positioning taper sleeve. Due to the pressing action of a pressure cover and the locking action of the circular nut, the contact surfaces of two pairs of conical surface undergo elastic deformation and are tightly bonded, which can generate greater friction. Therefore, the structure has sealing and anti-loosening functions.

Description

technical field [0001] The invention relates to a sealing and anti-loosening structure of a combined down-the-hole hammer, which is suitable for the combined down-the-hole hammer. Background technique [0002] In the construction of large-diameter bored piles, when encountering strongly weathered, moderately weathered or even slightly weathered bedrock strata, if you still use conventional construction methods and drilling tools, you will encounter difficulties, and the footage is often slow or even impossible. Not only the construction cost High, and the quality of the project is difficult to guarantee. Down-the-hole hammer drilling is considered to be the most reasonable and advanced method to deal with hard formations. DTH hammer can be divided into integrated DTH hammer and combined DTH hammer according to the structure. Due to the high manufacturing cost of the integrated DTH hammer, it has large impact vibration and high noise during operation, while the combined DTH ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B4/14E02D5/34
CPCE02D5/34E21B4/003E21B4/14
Inventor 何清华高淑蓉周权赵宏强林宏武
Owner SUNWARD INTELLIGENT EQUIP CO LTD
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