Percussion hammer

A technology of impact hammer and hammer teeth, which is applied in the field of impact hammers, can solve problems such as hindering hammer teeth hammering and affecting hammering efficiency, and achieve uniform hammering force, stable hammering effect, and guaranteed hammering effect

Active Publication Date: 2017-12-01
NENGCHENG GRP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the bottom surface of the well hammered by the impact hammer in the prior art forms convex ribs, hinders the hammer teeth from hammering, and affects the efficiency of hammering, thereby providing a well bottom surface hammered out Impact hammer with flat surface and high hammering efficiency

Method used

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Embodiment 1

[0047] figure 1 It is a bottom view of the hammer head of the impact hammer provided in the first embodiment of the present invention; figure 2 for figure 1 A longitudinal sectional view of the hammer head shown; image 3 for figure 1 A longitudinal cross-sectional view showing the connection between the hammer body and the hammer head. Such as Figure 1-3 As shown, the impact hammer provided in this embodiment includes a hammer head. The hammer head includes a ring-shaped hammer frame 2 and four hammer beams 1 arranged in the hammer frame 2. The inner ends are fixedly connected to each other at the center of the hammering frame 2, and the outer ends are fixedly connected to the hammering frame 2. The four hammering beams 1 are arranged at equal angular intervals, and each hammering beam 1 is provided with a set of first hammer teeth 11. The first hammer teeth 11 of each group are evenly distributed along the radial direction of the hammer frame 2, and the concentric ring wher...

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Abstract

The invention relates to the technical field of well drilling, in particular to a percussion hammer. The percussion hammer comprises a hammer head and multiple first hammer teeth. The hammer head is provided with a hammer face used for hammering. The first hammer teeth are arranged on the hammer face in a manner of protruding towards a well bottom. The first hammer teeth are divided into multiple sets in the circumferential direction around the center of the hammer face. Each set of first hammer teeth is distributed in the radial direction from the center. The radial distance from the first hammer teeth in each set to the center is located between the radial distances from the two radially-adjacent first hammer teeth in the circumferentially-adjacent sets to the center. The radial distance from any two radially-adjacent first hammer teeth in each set to the center corresponds to the radial distance from one first hammer tooth in the circumferentially-adjacent sets to the center. The hammering influence range of each first hammer tooth partially coincides with the hammering influence range of the two radially-adjacent first hammer teeth in the circumferentially-adjacent sets. According to the percussion hammer, a hammered well bottom face is leveler, and the hammering efficiency is higher.

Description

Technical field [0001] The invention relates to the technical field of drilling, in particular to an impact hammer. Background technique [0002] The work of using mechanical equipment or manpower to drill the formation into holes from the ground is called drilling. Although relative to rotary drilling, percussive drilling has disadvantages such as low drilling efficiency and shallow drilling depth. However, drilling in hard rock formations still has its own unique advantages. The percussive drilling process needs to repeatedly raise and lower the impact hammer, and the impact hammer continuously impacts the formation downward to break the rock. In order to improve the impact hammer's ability to break hard rock formations, several hammer teeth are often set on the hammering surface, and the free rotation of the steel cable hanging the impact hammer drives the rotation of the impact hammer to achieve full hammering to the bottom of the well; in order to avoid the impact hammer S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B1/00E21B10/36
CPCE21B1/00E21B10/36
Inventor 王斌坚
Owner NENGCHENG GRP
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