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Churndrill noise-reducing sleeve

A technology of percussion drilling and noise reduction, which is applied in the field of percussion drilling, can solve problems such as difficulty in implementation, and achieve the effects of reduced possibility, good noise reduction effect, and easy realization

Inactive Publication Date: 2010-03-10
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are not many products on the market to reduce or eliminate the noise of impact drilling. After investigation, there is a utility model patent electric drill dust collection and sound insulation cover, but after testing, it is found that it is difficult to implement.

Method used

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  • Churndrill noise-reducing sleeve

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0013] Such as figure 1 As shown, the impact drill noise reduction sleeve of the present invention includes inner and outer jackets 6, 2, rubber ring 1, expansion muffler 4, spring 3 and the like.

[0014] The upper end of the jacket 2 is provided with a rubber ring 1, the jacket 2 and the inner jacket 6 are connected by a sliding pin 5, the inner top of the jacket 2 and the upper surface of the inner jacket 6 are connected by a spring 3, and the inner wall of the jacket 2 is glued to 2 to 3 layers by An expansion muffler 4 composed of annular perforated partitions.

[0015] Two to three layers of annular perforated partitions are glued to the inner wall of the outer sleeve 2 to form the expansion muffler 4 . This muffler is a combination of tubes and chambers, and the small chambers are connected to the tubes. The sudden change in the cross-section ...

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Abstract

The invention relates to a churndrill noise-reducing sleeve comprising an inner sheath and an outer sheath. The upper end of the outer sheath is provided with a rubber ring; the outer sheath and the inner sheath are connected by a sliding pin; the top inside the outer sheath and the upper end surface of the inner sheath are connected by a spring; and two to three layers of expanded silencers formed by ring-shaped clapboards with holes are adhered to the inner wall of the outer sheath. Due to the adoption of double-layer light thin materials and the adhering installation of the two to three layers of ring-shaped clapboards on the inner wall of the outer sheath, sound is effectively absorbed in the separating cavity formed by each clapboard and noise-reducing effect is comparatively good. Compared with the traditional churndrill, the churnadrill noise-reducing sleeve greatly lowers floating quantity of dust in air, reduces pollution to environment and simultaneously decreases influencesof floated dust on health of constructers. Besides, the churndrill noise-reducing sleeve can be matched with various types of churndrills and electric drill for use. After the churndrill is provided with the noise-reducing sleeve, possibility of flying out of a drill bit is greatly reduced and the safety of working is enhanced.

Description

technical field [0001] The invention relates to a percussion drill for building construction, in particular to a noise reduction device for the percussion drill. Background technique [0002] In modern social life, impact drills are used in the construction sites of various industrial buildings and in people's daily life to decorate houses and other places. The wide use of impact drills has brought great convenience to people's lives and reduced people's labor costs. Labor volume. However, while bringing convenience, the impact drill is noisy, and the shortcomings of affecting people's lives are also becoming more and more obvious. Noise belongs to the category of physical pollution, which affects people's rest, reduces labor efficiency, and interferes with people's language conversation and communication. If people stay in this state for a long time, it will damage the auditory system, causing mild tinnitus, and in severe cases, it will affect language hearing and cause h...

Claims

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Application Information

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IPC IPC(8): B25D17/11B25D17/10E21B1/00
Inventor 冯巧波梁丽秋刘玲周曰傅奇慧郁斯聪
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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