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Clamping ring with de-stressing part

A snap ring and hanger technology, which is used in drilling equipment, earth-moving drilling, driving devices for drilling in wellbore, etc., can solve the problems of breakage and inability to blunt processing edges, avoid downtime and reduce stress accumulation. , the effect of improving efficiency

Active Publication Date: 2017-12-08
湖北五环欧科制造技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the above-mentioned second traditional clasp structure and assembly method, the form of damage is mostly the arc of the U-shaped groove 36 and the formation of cracks N around the periphery, resulting in damage
The circumference of the snap ring in this design is provided with a U-shaped groove, and the edge is formed after the ring is cut, so that this place is the place where the stress gathers. In addition, the space at the corner of the arc is too small, and the edge cannot be blunt during the working process. The accumulation of mechanical vibration stress leads to the generation of crack N

Method used

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  • Clamping ring with de-stressing part
  • Clamping ring with de-stressing part
  • Clamping ring with de-stressing part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] see Figure 9-14 , a snap ring with a stress relief part, on which a drill bit suspension part 21, a matching positioning part 22, an air passage groove 23, a loading and unloading step 24 and a stress relief part 26 are arranged on the snap ring 2, and the stress relief part 26 is passed through A symmetrical flat groove structure is processed on the loading and unloading step 24. The outer contour of the flat groove structure is flush with the outer wall of the matching positioning part 22. The flat groove structure is perpendicular to the dividing line 25, and the dividing line 25 passes through the card. The axis of the ring 2 splits the ring to form a symmetrical snap ring 2 . By adopting the above-mentioned snap ring structure, the first traditional snap ring and impactor front joint structure is solved. Due to the stepped design of the snap ring, this place is where the stress gathers, and the space at the corner of the arc is too small, and the edges are often p...

Embodiment 2

[0072] see Figure 21-25 , a snap ring with a stress relief part, on the snap ring 4 is provided with a drill hanging part 41, a matching positioning part 42, an air passage groove 43, an O-ring 44, a U-shaped groove 46 and a stress relief part 47, and its characteristics In that: the stress relief portion 47 is formed by processing a pair of open grooves penetrating through the snap ring along the axial edge of the split surface of the snap ring 4, and the radial depth t2 of the groove bottom relative to the circumference of the open groove is greater than that of the U-shaped groove The radial depth t1 of the bottom of 46 is relative to the circumference; the dividing line 45 runs through the bottom of the stress relief part 47 to separate the ring to form a symmetrical snap ring 4 . By adopting the above snap ring structure, it solves the problem that in the second traditional snap ring structure and assembly method, since the snap ring is provided with a U-shaped groove on...

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Abstract

The invention relates to a clamping ring with a de-stress part. A drill hanging part, a cooperative locating part, an air through groove, a disassembly stair and the de-stress part are arranged on the clamping ring, the de-stress part is formed by machining symmetric flat groove structures on the disassembly stair, the outer profiles of the flat groove structures are flush with the outer wall of the cooperative locating part, the flat groove structures are perpendicular to parting lines, and the parting lines pass through the axis of the clamping ring. The clamping ring can effectively avoid the fracture defect generated due to stress concentration in the work process of a first traditional clamping ring structure, and can effectively avoid the fracture defect generated due to stress concentration in the work process of a second traditional non-stair clamping ring structure, and the service life of the clamping ring is effectively prolonged.

Description

technical field [0001] The invention relates to a component of pneumatic impact equipment, in particular to a clasp with a stress relief part. Background technique [0002] With the development of science and technology, the technology of domestic rock drilling equipment from design to manufacture has been greatly improved. Among them, down-the-hole impactors are gradually developing in the direction of high efficiency and low energy consumption. The increase in the impact frequency of impact equipment also often aggravates the fatigue failure of internal components after vibration. The snap ring is one of the components. [0003] When the snap ring plays the role of lifting the rod inside the impactor, the drill bit can be lifted out of the bottom of the hole together with the impactor. It is a split structure, that is, a symmetrical structure formed by cutting a ring-shaped workpiece along the axis. [0004] The first traditional clasp structure and assembly method: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B4/06
CPCE21B4/06
Inventor 龚康强孙超
Owner 湖北五环欧科制造技术有限公司