Pneumatic downhole hammer with energy storage characteristic
A down-the-hole impactor and characteristic technology, which is applied in the direction of drilling driving device, drilling equipment, earthwork drilling and mining in the wellbore, can solve the problems of poor rock breaking effect and insufficient impact force of the impactor, etc.
Active Publication Date: 2021-03-30
YANGTZE UNIVERSITY
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Problems solved by technology
[0004] The object of the present invention is to provide a device that can increase the impact force, thereby enhancing the rock-breaking effect, so as to solve the problem of rock-breaking due to insufficient impact force of existing impactors. Pneumatic down-the-hole impactor with energy storage characteristics for poor effect
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[0020] The pneumatic submersible impactor with energy storage characteristics is composed of an outer shell 1, an upper joint 2, a lower joint 3 and a gas distribution device. One end of the outer shell 1 is threaded with an upper joint 2, and the upper joint 2 above the outer shell 1 is Wear-resistant alloy blocks are evenly distributed; the other end of the outer shell 1 is threaded with a lower joint 3; the outer shell 1 below the upper joint 2 is equipped with a gas distribution device through an inner sleeve 4, and the inner sleeve 4 below the gas distribution device Piston 5 is installed on the top, and piston 5 is in sliding and sealed connection with inner sleeve 4; guide sleeve 6 is installed on the upper thread of outer shell 1 between piston 5 and lower joint 3, and guide sleeve 6 is intermittently sealed with the bottom end of piston 5 connection; the lower joint 3 is equipped with a drill bit 8, and the drill bit 8 is intermittently connected to the piston 5; Duri...
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The invention relates to a pneumatic downhole hammer with an energy storage characteristic, and belongs to the technical field of rock drilling instruments. The hammer is composed of an outer shell, an upper connector, a lower connector and an air distribution device; the upper connector is installed at one end of the outer shell in a threaded mode; the lower connector is installed at the other end of the outer shell in a threaded mode; the air distribution device and a piston are installed on the outer shell below the upper connector through an inner sleeve; a guiding sleeve is installed on the outer shell between the piston and the lower connector in a threaded mode; and a drill bit is installed on the lower connector. According to the hammer, an upper air chamber is matched with an impact spring, so that the impact force of the drill bit on rock can be increased, and the rock breaking effect can be effectively enhanced; airflow can circulate in a deslagging channel all the time, sothat the deslagging channel can be prevented from being blocked due to backflow, and an air path can be effectively ensured to be unblocked; and the problem that the rock breaking effect is poor due to insufficient impact force of an existing hammer is solved.
Description
technical field [0001] The invention relates to a pneumatic down-the-hole hammer with energy storage characteristics, which belongs to the technical field of rock drilling equipment. Background technique [0002] Rock and soil drilling engineering has occupied an increasingly important place in the current economic construction of our country. Its application fields not only involve mineral exploration and development, but more and more involve construction, water supply, municipal administration, transportation, environment, etc. . With the accelerated pace of economic globalization, this type of project is getting bigger and bigger in the international and domestic markets, and the requirements are getting higher and higher. At present, China's economy will remain at the climax of economic and industrial construction, with a new round of rapid development and mineral resource development, the market demand will be greater and continue to grow in the impactor. The birth a...
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IPC IPC(8): E21B4/14
CPCE21B4/14
Inventor孙巧雷张义王艺星王甜甜顾浩文梅翔洲
OwnerYANGTZE UNIVERSITY