Vibration damping wind distributor used for down-the-hole hammer modified by rotary drilling rig
A technology of rotary drilling rig and down-the-hole hammer, which is used in the sealing of engines, driving devices for drilling in wellbore, drilling equipment, etc. High-intensity vibration working environment and other issues, to achieve the effect of improving utilization efficiency, convenient connection, and ensuring smoothness
Pending Publication Date: 2020-10-02
徐州雷曼机械科技有限公司
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Problems solved by technology
[0003] The structure of the traditional air distributor does not match the installation requirements of the DTH hammer modified by the rotary drilling rig, and it is not suitable for the use of the DTH hammer modified by the rotary drilling rig, nor is it suitable for use in high-intensity vibration working environments
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Embodiment Construction
[0021] The present invention will be further described below.
[0022] Such as figure 1 As shown, a vibration damping air divider used in the transformation of a rotary drilling rig for a down-the-hole hammer includes an internal fixed shaft 1, an external rotating sleeve 2, an upper connector 3, a lower connector 4, an upper end cover 5, a lower end cover 6, Sliding body 7 and spring 8;
[0023] A stepped cavity 9 and a ventilation cavity 10 are respectively provided at the axial center positions of the upper and lower parts of the internal fixed shaft 1, and the open ends of the stepped cavity 9 and the ventilated cavity 10 extend to the upper end surface and the lower end surface of the internal fixed shaft 1 respectively; The stepped cavity 9 is composed of an upper sliding cavity 11, a middle spring cavity 12 and a lower sliding cavity 13 whose internal diameters are successively reduced from top to bottom; the cross section of the upper sliding cavity 11 is a regular po...
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The invention provides a vibration damping wind distributor used for a down-the-hole hammer modified by a rotary drilling rig. A stepped cavity and a ventilation cavity are formed in the axial centerof the upper portion and the lower portion of an inner fixing shaft respectively; an upper end cover and a lower end cover are respectively fixedly connected with the upper end and the lower end of the inner fixing shaft, and the center of the inner fixing shaft is provided with an upper through hole and a lower through hole; an outer rotating sleeve rotatably sleeves the outer side of the inner fixing shaft; the outer rotating sleeve is internally provided with an annular air supply cavity; the cylinder body of the outer rotating sleeve is fixedly connected with an air intake pipeline, and the air intake pipeline communicates with the annular air supply cavity through a communicating hole; the annular air supply cavity communicates with the ventilation cavity through a radial communication channel, and a sliding body is composed of a sliding block and a sliding rod; the sliding block is slidably arranged in an upper sliding cavity, the sliding rod is slidably arranged in a lower sliding cavity; and a spring sleeves the outer portion of the sliding rod, the lower portion of an upper connector penetrates through the upper through hole and then is fixedly connected with the center ofthe upper end of the sliding block, and a lower connector is fixedly connected with the central region of the lower end cover. The wind distributor is suitable for improving the installation requirements of the down-the-hole hammer modified by the rotary drilling rig.
Description
technical field [0001] The invention belongs to the technical field of building and bridge construction equipment, and in particular relates to a vibration-damping air divider used in the transformation of a down-the-hole hammer for a rotary drilling rig. Background technique [0002] In the construction process of rotary excavation machinery, in order to ensure gas consumption and work requirements, the connection between fixed gas supply components and moving and rotating operating components has become a problem that needs to be solved. Especially for the down-the-hole hammer transformed by the rotary drilling rig, the connection between the non-rotating air intake pipeline and the rotating drill pipe, and the vibration reduction during the operation of the power head are problems that need to be solved urgently. [0003] The structure of the traditional air divider does not match the installation requirements of the DTH hammer modified by the rotary drilling rig, and it ...
Claims
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IPC IPC(8): E21B4/14F16J15/16
CPCE21B4/14E21B4/003F16J15/16
Inventor 任城钰李小敏贺广迎李祥康
Owner 徐州雷曼机械科技有限公司