Spiral nut made of carbon-plastic alloy and used for percussion borer

A technology of carbon-plastic alloy and rock drilling machine, which is applied in the field of parts and components, can solve the problems of unsatisfactory friction coefficient, screw rod wear, high production cost, etc., and achieve the effects of small friction coefficient, prolonging service life, protection and service life

Inactive Publication Date: 2009-07-01
吴立坤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production of existing screw nuts generally adopts bronze, which is a relatively wear-resistant material. However, in actual use, the screw nuts made of bronze have the following problems: one is that bronze is a rare metal, and the production cost is high; the other is friction The coefficient is not ideal, the service life is short, and the third is high hardness. Under high-speed motion, friction with the screw rod will easily lead to accelerated wear of the screw rod

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Weigh 400 grams of polyethersulfone, 150 grams of carbon fiber, and 20 grams of polytetrafluoroethylene, pretreat them respectively, put them into a high-speed mixer, mix them evenly, and move them to a mold for molding and sintering.

Embodiment 2

[0015] Weigh 500 grams of polyethersulfone, 250 grams of carbon fiber, and 50 grams of polytetrafluoroethylene, pretreat them respectively, put them into a high-speed mixer, mix them evenly, and move them to a mold for molding and sintering.

Embodiment 3

[0017] Weigh 650 grams of polyethersulfone, 300 grams of carbon fiber, and 100 grams of polytetrafluoroethylene, pretreat them respectively, put them into a high-speed mixer, mix them uniformly, move them to a mold, and mold them for sintering.

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PUM

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Abstract

The invention relates to a spiral nut manufactured from a carbon alloy for a rock drill. A material formula for manufacturing consists of the following raw materials by weight portion: 40 to 65 portions of polyether sulphone, 15 to 30 portions of carbon fiber and 2 to 10 portions of teflon. In specific implementation, the raw materials can be also added with 20 to 30 portions of polyimide, 1 to 5 portions of graphite and 2 to 10 portions of bronze powder respectively. Compared with the prior art, the spiral nut manufactured from the novel material has the advantages of low manufacturing cost, long service life and high working efficiency and can also prolong the service life of a spiral rod in a high-speed motion state.

Description

【Technical field】 [0001] The invention relates to a component assembled on a mining mechanical rock drill, in particular to a new type of material used for making a screw nut. 【Background technique】 [0002] Existing pneumatic rock drills use compressed air to push the piston to reciprocate. During the stroke, the piston impacts the drilling tool. During the return stroke, the piston drives the drilling tool to rotate at a certain angle. Through continuous impact, the drilling tool digs out a circular blast hole on the rock. During the return stroke of the piston, the ratchet pawl bears against the tooth surface of the ratchet under the action of the tower spring, so that the screw rod cannot rotate in the opposite direction. The tool rotates, therefore, the screw nut is subjected to a large torque and high-speed motion friction during the work process. The production of existing screw nuts generally adopts bronze, which is a relatively wear-resistant material. However, in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/06C08K7/06C08K3/04C08K3/08C08L27/18C08L79/08E21B6/06
Inventor 吴立坤
Owner 吴立坤
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