A micro-adjustable self-adaptive positioning device for drilling pump piston rod
A technology for positioning devices and piston rods, which is applied to parts of pumping devices for elastic fluids, pump elements, variable displacement pump parts, etc., can solve problems such as eccentric wear of the middle tie rod and piston rod, and achieve the elimination of additional diameters The effect of reducing force and reducing the degree of eccentric wear
Active Publication Date: 2020-03-27
BAOJI PETROLEUM MASCH CO LTD +2
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Problems solved by technology
[0003] The purpose of the present invention is to provide a finely adjustable self-adaptive positioning device for the piston rod of the drilling pump, which solves the problem of eccentric wear caused by the misalignment between the middle tie rod and the piston rod
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Embodiment Construction
[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0018] The present invention is a micro-adjustable drilling pump piston rod self-adaptive positioning device, such as figure 1 As shown, it includes a cross positioning block 2 arranged between the piston rod 3 and the intermediate tie rod 1, as figure 2 and image 3 As shown, the center of the upper and lower surfaces of the cross positioning block 2 is respectively rotated by a pin shaft to be provided with a detachable positioning key 6 and a fixed positioning key 7, as Figure 4 and Figure 5 As shown, the end faces of the middle tie rod 1 and the piston rod 3 close to the cross positioning block 2 are respectively provided with a first positioning groove 8 and a second positioning groove 9, the other end of the piston rod 3 is provided with a piston 5, and the fixed positioning key 7 is located at the first In the positioning groove ...
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The invention discloses a drilling pump piston rod self-adaptive positioning device capable of being fine-adjusted. The drilling pump piston rod self-adaptive positioning device comprises a cross-shaped positioning block arranged between a piston rod and a middle pulling rod, a detachable positioning key and a fixed positioning key are rotatably arranged at the center of the end face of the cross-shaped positioning block through a pin shaft, a first positioning groove and a second positioning groove are arranged on the end face, close to the cross-shaped positioning block, of the middle pulling rod and the end face, close to the cross-shaped positioning block, of the piston rod respectively, a piston is arranged at the other end of the piston rod, the fixed positioning key is located in the first positioning groove, the detachable positioning key is located in the second positioning groove, and the middle pulling rod and the piston rod are fixed to the cross-shaped positioning block through screws which are evenly arranged at the periphery. The positioning device can automatically adapt to different axial degrees generated when the drilling pump piston rod and the middle pulling rod are connected and assembled within a certain range, therefore, the additional radial force is eliminated, and the eccentric wear degree of parts is reduced.
Description
technical field [0001] The invention belongs to the technical field of petroleum drilling equipment, and in particular relates to a self-adaptive positioning device for a drilling pump piston rod that can be fine-tuned. Background technique [0002] At present, the middle tie rod of the drilling pump, the crosshead and the piston rod are all positioned by a cylindrical pin at one end. Due to the cumulative effect of parts processing and assembly errors, when the piston rod is connected to the middle tie rod, the power end and the front wall of the frame should be measured first. Whether the coaxiality of the hole is within the allowable deviation range, otherwise it is necessary to adjust the upper and lower guide plates of the power end to meet the requirements of the coaxiality with the middle tie rod. Even so, the locating pin at the end of the piston rod and the locating hole at the end of the intermediate tie rod often have a large radial accumulation deviation during c...
Claims
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IPC IPC(8): F04B53/14
CPCF04B53/147
Inventor 李永飞王定亚曾兴昌郝建旭何根良
Owner BAOJI PETROLEUM MASCH CO LTD