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[CN 201720354898.1] Air hammer with long service life
[CN 201720354898.1] An air hammer with long service life Title: An air hammer with long service life Application Number: CN 201720354898.1 Applicant: Chengdu Zhongsicheng Technology Co., Ltd. Application Date: 2017-4-6 Patent Type: Utility Model The utility model discloses an air hammer with long service life, including an upper joint, a lower joint, an outer cylinder, an inner cylinder, a drill bit, an air seat and a piston. The piston is cylindrical with upper part and lower part, the upper joint, the air seat, the piston and the drill bit are all provided with a central air passage, the upper part of the outer cylinder is connected with the upper joint, and the lower part of the outer cylinder is connected with the lower joint, the outer surface of the piston is provided with a gas distribution groove, and the gas distribution groove is provided with a spiral reinforcing rib. The drill bit is arranged at the lower part of the outer cylinder cavity, the drill bit is located under the piston, and the bottom of the cylinder is connected with an anti-drop joint. The anti-drop joint is connected with the drill bit. The utility model has the technical effects of slowing down the wear speed of the piston and improving the service life of the air hammer.
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