Mud pump processing method

Abstract

The present invention relates to a mud pump processing method, including processing a first reference hole and a second reference hole on a frame; installing an upper guide plate and a lower guide plate in the first reference hole respectively by installing bolts; connecting a crosshead, an intermediate pull rod and a piston rod in advance to form a crosshead rod member of an integrated structure, and then installing the crosshead between the upper guide plate and the lower guide plate, and installing a gauge on the piston rod, adjusting the installation position of the upper guide plate and the lower guide plate on the frame according to the detection result of a dial indicator until the crosshead rod member and the second reference hole are on the same axis; removing the gauge, and installing a piston head at the front end of the piston rod, installing a cylinder sleeve of a hydraulic end in the second reference hole, and matching the piston head with the cylinder sleeve. The coaxiality of the piston rod in the inner hole of the cylinder sleeve is improved, the working accuracy of the piston head is improved, and the service life of the piston and the cylinder sleeve is extended.

Description

Technical Field

[0001] The invention relates to the field of mud pumps, and in particular to a mud pump processing method. Background Art

[0002] The accuracy of the mud pump frame is crucial. Insufficient accuracy will lead to installation deviation, increased vibration, accelerated wear, and high noise, which will affect the stable operation and life of the mud pump.

[0003] like Figure 1 and Figure 2 As shown, a main shaft hole 11, a pinion shaft hole 12, a guide plate mounting hole 13 and a hydraulic cylinder mounting hole 14 are provided on the mud pump frame; the main shaft hole 11 and the pinion shaft hole 12 are provided on the frame in the left-right direction, the guide plate mounting hole 13 is provided in the frame in the front-back direction, and the hydraulic cylinder mounting hole 14 is provided at the front end of the frame in the front-back direction. The main shaft hole 11 and the pinion shaft hole 12 are kept parallel in the left-right direction, and the guide plate mounting hole 13 and the hydraulic cylinder mounting hole 14 are coaxial in the front-to-back direction. The current processing of these four holes involves processing the main shaft hole 11 and the pinion shaft hole 12 respectively, and then rotating the frame 90 degrees to process the hydraulic cylinder mounting hole 14 and the guide plate mounting hole 13. The guide plate mounting hole 13 is located inside the frame, and an extended tool bar is required when processing the guide plate mounting hole 13. The extended tool bar passes through the frame in the front-to-back direction, and a tooling is assembled in the main shaft hole 11. The tooling is used to support the end of the extended tool bar, and arc grooves are bored and milled on the upper support plate and the lower support plate of the guide plate mounting hole 13 by the extended tool bar. Because the entire mud pump frame is relatively long, with a length of about three meters, the length of the extended tool bar also needs to be about three meters. Through this extension Boring and milling the guide plate mounting hole 13 by the tool bar can easily cause tool vibration, affecting the processing accuracy of the guide plate mounting hole 13. The hydraulic cylinder mounting hole 14 is also bored and milled by extending the tool bar, but because the hydraulic cylinder mounting hole 14 is located at the front end of the frame, the tool vibration phenomenon is relatively not obvious. There is a coaxiality requirement for the processed guide plate mounting hole 13 and the hydraulic cylinder mounting hole 14. The previous processing method of extending the tool bar through the front and back directions has the following shortcomings: 1. The tool bar cantilever is too long, the rigidity is poor, the processing efficiency is low and the size is difficult to control; 2. The long tool bar is troublesome to load and unload, and one person cannot operate it; 3. After the long tool bar is bored, the tool cannot be retracted, and it is difficult to measure the aperture size. The tool bar needs to be disassembled for measurement; 4. After the tool bar is disassembled, the tool cannot be sized and needs to be re-calibrated. The accuracy is difficult to control and the processing efficiency is low.

[0004] After the mud pump frame is processed, it is necessary to install the cylinder in the cylinder mounting hole, install the upper guide plate and the lower guide plate in the guide plate mounting hole 13, install a crosshead between the upper guide plate and the lower guide plate, and the crosshead is connected to the piston rod of the hydraulic end through an intermediate pull rod. The crosshead is guided by the upper guide plate and the lower guide plate and moves back and forth along the frame. The crosshead drives the piston rod to move back and forth through the intermediate pull rod, thereby driving the cylinder to suck the mud. In the past, the crosshead and the hydraulic end were installed on the frame separately. The general process is: first install the upper guide plate and the lower guide plate, the crosshead is set between the two guide plates, the hydraulic cylinder and the cylinder sleeve of the hydraulic end are installed in the hydraulic cylinder mounting hole, and finally the crosshead and the piston rod are fixedly connected through the intermediate pull rod. The problem brought about by this installation method in the past is that the piston rod will deviate from the center line of the cylinder body when it is easy to move, resulting in the local force between the piston head and the inner wall of the cylinder body, thus shortening the service life of the piston head and the cylinder liner. The main reason is that the crosshead is assembled in the guide plate mounting hole 13 through the upper and lower guide plates, the piston rod is installed on the crosshead, and the cylinder liner is installed in the cylinder mounting hole along with the cylinder. There will be installation errors in the separate installation. During operation, the crosshead, the middle pull rod and the rear plug rod are fixedly connected as an integrated structure. When the crosshead drives the piston rod to move back and forth, the installation errors at the two places are finally reflected between the piston head and the cylinder body, resulting in serious wear of the piston head and the cylinder liner, thereby shortening the service life of the entire cylinder.

[0005] In summary, the problems existing in the current mud pump processing process are: 1. The processing of the guide plate mounting hole in the frame requires the use of an extended tool bar for boring and milling, which makes the processing of the guide plate mounting hole inconvenient and the error large, affecting the processing accuracy of the frame; 2. The installation method of the crosshead and the hydraulic cylinder in the traditional frame easily causes an error between the piston head and the cylinder body, resulting in a short service life of the piston head and the cylinder liner. Summary of the invention

[0006] The technical problem to be solved by the present invention is: to overcome the shortcomings of the prior art and provide a mud pump processing method to solve the technical problems in the previous mud pump processing process, such as low frame processing accuracy and large centering detection error, which lead to serious position deviation of the piston head in the cylinder body and affect the service life of the piston head and cylinder liner.

[0007] The technical solution adopted by the present invention to solve its technical problem is:

[0008] A mud pump processing method is provided, comprising:

[0009] A first reference hole for mounting a crosshead and a second reference hole for mounting a hydraulic cylinder are processed on the frame;

[0010] The upper guide plate and the lower guide plate are respectively installed in the first reference hole by installing bolts;

[0011] The crosshead, the middle tie rod and the piston rod are connected in advance to form a crosshead rod of an integrated structure, and then the crosshead is installed between the upper guide plate and the lower guide plate, and a check fixture is installed on the piston rod, and a dial indicator is provided on the check fixture, and the dial indicator cooperates with the second reference hole. During the inspection, the check fixture is rotated on the piston rod, so that the dial indicator detects the center position of the second reference hole, and the installation position of the upper guide plate and the lower guide plate on the frame is adjusted according to the inspection result of the dial indicator until the crosshead rod and the second reference hole are on the same axis;

[0012] Remove the inspection fixture, install the piston head at the front end of the piston rod, install the cylinder sleeve of the hydraulic end in the second reference hole, and match the piston head with the inner hole of the cylinder sleeve.

[0013] Furthermore, a crosshead working chamber is provided in the frame, a plurality of upper support plates are provided on the top surface of the crosshead working chamber, a plurality of lower support plates are provided on the bottom surface of the chamber, and a first reference groove is provided on both the upper support plates and the lower support plates;

[0014] The back side of the lower guide plate cooperates with the first reference groove of each lower support plate, a lower clamping block is arranged between each lower support plate, and at least one pair of lower mounting bolts passes through the lower guide plate and is connected to the lower clamping block, thereby locking the lower guide plate on each lower support plate;

[0015] The back side of the upper guide plate cooperates with the first reference groove of each upper support plate, an upper clamping block is arranged between each upper support plate, and at least one pair of upper mounting bolts passes through the upper guide plate and is connected to the upper clamping block, thereby locking the upper guide plate on each lower support plate;

[0016] Gaskets are suitable for being placed between the lower guide plate and the lower support plate, and between the upper guide plate and the upper support plate to adjust the installation height and installation angle of the upper guide plate and the lower guide plate in the crosshead working chamber.

[0017] Furthermore, observation holes are provided on the frame side panels on the left and right sides of the crosshead working chamber;

[0018] When processing the first reference hole, the right-angle milling head enters the crosshead working chamber from the observation hole on the side of the frame, and then controls the right-angle milling head to move backward first, and simultaneously bores and mills the first reference groove on the upper support plate and the lower support plate on the rear side, and then controls the right-angle milling head to exit the observation hole, and the angle milling head rotates 180° and enters the crosshead working chamber again, and then controls the right-angle milling head to move forward, and simultaneously bores and mills the first reference groove on the upper support plate and the lower support plate on the front side, and after the right-angle milling head completes processing the first reference hole, it exits the observation hole and continues processing the second reference hole;

[0019] When processing the second reference hole, the right-angle milling head is moved to the front end of the frame, and the right-angle milling head is controlled to move backward to realize boring and milling the second reference hole on the front plate of the frame.

[0020] Furthermore, the inspection tool comprises

[0021] A mounting seat, the mounting seat and the piston rod are rotationally matched;

[0022] A bridge plate, the rear end of which is fixedly connected to the mounting seat, and a slide groove is provided on the bridge plate;

[0023] A slide seat, wherein a slider is provided at the lower end of the slide seat, the slider is inserted into the slide groove, and a locking screw at the bottom passes through the lower gasket and is connected to the slider, thereby locking the slide seat on the bridge plate;

[0024] A dial indicator, wherein the dial indicator is mounted on the slide;

[0025] The mounting seat rotates on the piston rod, driving the dial indicator to rotate in the second reference hole.

[0026] Furthermore, a bearing cavity is provided in the mounting seat, an inner retaining ring is formed on the inner side of the bearing cavity, and a cover plate is provided on the outer side of the bearing cavity;

[0027] Two ball bearings, the two ball bearings are arranged in the bearing cavity, a spacer is arranged between the ball bearings, and the spacer is matched and abutted with the inner rings of adjacent ball bearings;

[0028] The inner retaining ring and the cover plate are respectively matched with the outer rings of the two roller bearings;

[0029] The piston mounting section passes through the inner rings of the two ball bearings, an inner gasket is arranged between the rear ball bearing and the rear end face of the piston mounting section, an outer gasket is arranged between the front ball bearing and the locking nut, and a locking nut is arranged on the piston mounting section, and the locking nut axially locks the outer gasket, the spacer and the inner gasket.

[0030] The beneficial effects of the present invention are:

[0031] The mud pump processing method of the present invention changes the traditional method of using an extended inspection fixture to replace the intermediate tie rod and the piston rod and directly fixing them on the crosshead for inspection. After the inspection is completed, the inspection fixture is removed, and then the intermediate tie rod, piston rod and piston head are assembled on the crosshead. Now, the crosshead, the intermediate tie rod and the piston rod are assembled into one, and then the coaxiality of the piston rod relative to the second reference hole is detected by the inspection fixture, and the installation position of the upper guide plate and the lower guide plate in the first reference hole is continuously adjusted to achieve the position adjustment of the crosshead, and finally the piston rod is made coaxial with the second reference hole, and finally the cylinder sleeve of the hydraulic end is installed in the second reference hole, which avoids the traditional extended inspection fixture and whether the axis of the final piston rod can be installed on the same axis. The error between the piston rod and the axis of the reference hole cannot be detected after the final piston rod installation is completed. The new method improves the coaxiality of the piston rod in the cylinder sleeve, improves the working accuracy of the piston head, and extends the service life of the piston head and the cylinder sleeve.

[0032] For the processing of the first reference hole on the frame, the right-angle milling head is connected through the spindle, inserted from the observation hole on the side of the frame, and bored and milled by the right-angle milling head in two sections, front and back. There is no need to use the traditional method of using an extended tool bar to pass through the frame front and back. Now the processing of the first reference hole is more convenient, with higher accuracy, more convenient measurement, higher processing efficiency, and more stable dimensional control. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention is further described below in conjunction with the accompanying drawings.

[0034] Figure 1 and Figure 2 It is a schematic diagram of a mud pump frame;

[0035] Figure 3 This is a schematic diagram of the inspection fixture in the mud pump frame;

[0036] Figure 4 It is a structural diagram between the cross head rod and the upper guide plate and the lower guide plate respectively;

[0037] Figure 5 It is a partial view of the inspection fixture;

[0038] Figure 6 It is a partial cross-sectional view of the inspection fixture;

[0039] in,

[0040] 1. Frame, 11. Spindle hole, 12. Pinion shaft hole, 13. Guide plate mounting hole, 14. Cylinder mounting hole, 15. Observation hole;

[0041] 21. upper support plate, 22. upper guide plate, 23. upper clamping block;

[0042] 31. lower support plate, 32. lower guide plate, 33. lower clamping block;

[0043] 41. cross head, 42. intermediate tie rod, 43. piston rod;

[0044] 5. Checking fixture, 51. Mounting seat, 52. Ball bearing, 53. Spacer, 54. Cover plate, 55. Inner gasket, 56. Outer gasket, 57. Locking nut;

[0045] 7. bridge plate, 71. slideway, 72. slide seat, 73. lower gasket, 74. dial indicator;

[0046] 8. Right angle milling head. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] The present application provides a mud pump processing method, which is described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0049] In order to solve the technical problem in the prior art that the crosshead and the piston rod on the frame 1 are not installed in an appropriate manner during the assembly of the mud pump, resulting in serious position deviation of the piston head in the cylinder body and affecting the service life of the piston head, an embodiment of the present application provides a mud pump processing method, which is described in detail below.

[0050] like Figures 1 to 3 As shown, a mud pump processing method includes:

[0051] A first reference hole for mounting the crosshead 41 and a second reference hole for mounting the hydraulic cylinder are processed on the frame 1;

[0052] In this embodiment, the first reference hole is the guide plate mounting hole 13 , and the second reference hole is the cylinder mounting hole 14 .

[0053] The upper guide plate 22 and the lower guide plate 32 are respectively installed in the first reference hole by installing bolts;

[0054] See also Figure 4 The crosshead 41, the intermediate tie rod 42 and the piston rod 43 are connected in advance to form a crosshead rod of an integrated structure. The intermediate tie rod 42 and the crosshead 41 are connected by bolts, and the intermediate tie rod 42 and the piston rod 43 are connected by a clamp.

[0055] Then, the crosshead 41 is installed between the upper guide plate 22 and the lower guide plate 32, and the gauge 5 is installed on the piston rod 43. The gauge 5 is provided with a dial indicator 74, and the dial indicator 74 cooperates with the second reference hole. During the inspection, the gauge 5 is rotated on the piston rod 43, so that the dial indicator 74 detects the center position of the second reference hole. The installation position of the upper guide plate 22 and the lower guide plate 32 on the frame 1 is adjusted according to the inspection result of the dial indicator 74 until the crosshead rod and the second reference hole are on the same axis.

[0056] Remove the inspection fixture 5, install the piston head at the front end of the piston rod 43, install the cylinder sleeve in the second reference hole, and match the piston head with the inner hole of the cylinder sleeve.

[0057] Specifically, as an optional implementation in this embodiment, Figure 3 and Figure 4 As shown, a crosshead working chamber is provided in the frame 1, a plurality of upper support plates 21 are provided on the top surface of the crosshead working chamber, a plurality of lower support plates 31 are provided on the bottom surface of the chamber, and a first reference groove is provided on both the upper support plates 21 and the lower support plates 31;

[0058] The back side of the lower guide plate 32 cooperates with the first reference groove of each lower support plate 31, and a lower clamping block 33 is arranged between each lower support plate 31. At least one pair of lower mounting bolts passes through the lower guide plate 32 and is connected to the lower clamping block 33, so as to lock the lower guide plate 32 on each lower support plate 31.

[0059] The back side of the upper guide plate 22 cooperates with the first reference groove of each upper support plate 21, and an upper clamping block 23 is arranged between each upper support plate 21. At least one pair of upper mounting bolts passes through the upper guide plate 22 and is connected to the upper clamping block 23, so as to lock the upper guide plate 22 on each lower support plate 31;

[0060] Gaskets are suitable for being placed between the lower guide plate 32 and the lower support plate 31 and between the upper guide plate 22 and the upper support plate 21 to adjust the installation height and installation angle of the upper guide plate 22 and the lower guide plate 32 in the crosshead working chamber.

[0061] like Figure 4 As shown, in this embodiment, the first reference groove is an arc groove, and the curvature is adapted to the curvature of the back side of the guide plate.

[0062] like Figure 4 As shown, in this embodiment, a plate groove is provided on the back of the guide plate, and the plate groove cooperates with the support plate to improve the stability of the assembly of the support plate and the guide plate.

[0063] like Figure 4 As shown, in this embodiment, the number of upper support plates 21 and lower support plates 31 are both four, and each support plate is distributed in the front-to-back direction in the crosshead working chamber. The upper support plates 21 and the lower support plates 31 correspond to each other up and down in the crosshead working chamber, and a single support plate is arranged in the left-right direction on the bracket.

[0064] In this embodiment, an upper clamping groove is provided on the upper support plate 21, and the upper clamping grooves are all rectangular grooves. The upper clamping block 23 is a rectangular block. The upper clamping block 23 is clamped between two adjacent upper support plates 21, and the upper clamping block 23 and the upper support plate 21 are a vertical structure. The mounting bolts pass through the upper guide plate 22 and are threadedly connected with the upper clamping block 23. The mounting bolts are distributed on the left and right sides of the upper guide plate 22, so that the upper guide plate 22 can be evenly stressed on the left and right sides during installation.

[0065] The installation structure among the lower support plate 31 , the lower guide plate 32 and the lower clamping block 33 is the same as described above.

[0066] The crosshead rod is installed between the upper guide plate 22 and the lower guide plate 32 through the crosshead 41. The positions of the upper guide plate 22 and the lower guide plate 32 determine the axis center line of the entire crosshead rod. The upper guide plate 22 and the lower guide plate 32 are fastened with mounting bolts. Therefore, according to the accuracy of the inspection of the inspection fixture 5 in the second reference hole, the positions of the upper guide plate 22 and the lower guide plate 32 are adjusted, thereby adjusting the up and down position, left and right position and whether the entire crosshead rod is tilted. If the position of the crosshead rod is too low, a gasket is placed between the lower guide plate 32 and the lower support plate 31, and the gasket between the upper guide plate 22 and the upper support plate 21 is reduced accordingly. If the position of the crosshead rod is biased to the right, some gaskets are placed on the right side of the two guide plates, and the positions of the two guide plates are biased to the left as a whole. The position accuracy of the crosshead rod is achieved by adding or reducing gaskets at the corresponding positions, so that when the crosshead rod moves back and forth between the upper guide plate 22 and the lower guide plate 32, the piston rod 43 is always at the center line of the second reference hole.

[0067] Specifically, as an optional implementation in this embodiment, Figure 4 , Figure 5 as well as Figure 6 As shown, the inspection tool 5 includes

[0068] A mounting seat 51, wherein the mounting seat 51 is rotationally matched with the piston rod 43;

[0069] A bridge plate 7, wherein the rear end of the bridge plate 7 is fixedly connected to the mounting seat 51, and a slide groove 71 is provided on the bridge plate 7;

[0070] A slide seat 72, wherein a slider is provided at the lower end of the slide seat 72, the slider is inserted into the slide groove 71, and a locking screw at the bottom passes through the lower gasket 73 and is connected to the slider, thereby locking the slide seat 72 on the bridge plate 7;

[0071] A dial indicator 74, wherein the dial indicator 74 is mounted on the slide 72;

[0072] The mounting seat 51 rotates on the piston rod 43, driving the dial indicator 74 to rotate in the second reference hole.

[0073] Specifically, as an optional implementation in this embodiment, Figure 6 As shown, a bearing cavity is provided in the mounting seat 51, an inner retaining ring is formed inside the bearing cavity, and a cover plate 54 is provided outside the bearing cavity;

[0074] Two ball bearings 52, the two ball bearings 52 are arranged in the bearing cavity, a spacer 53 is arranged between the ball bearings 52, and the spacer 53 cooperates and abuts against the inner rings of adjacent ball bearings 52;

[0075] The inner retaining ring and the cover plate 54 respectively cooperate with the outer rings of the two roller bearings;

[0076] The piston mounting section passes through the inner rings of the two ball bearings 52, an inner gasket 55 is arranged between the rear ball bearing 52 and the rear end face of the piston mounting section, an outer gasket 56 is arranged between the front ball bearing 52 and the locking nut 57, and a locking nut 57 is arranged on the piston mounting section, and the locking nut 57 axially locks the outer gasket 56, the spacer 53 and the inner gasket 55.

[0077] When the inspection fixture 5 is working, the mounting seat 51 rotates one circle on the piston rod 43, driving the probe of the dial indicator 74 to rotate one circle in the second reference hole. By observing the reading of the dial indicator 74, the position of the piston rod 43 relative to the second reference hole can be known. Since the piston rod 43 is a part of the crosshead rod in advance, the coaxiality of the piston rod 43 relative to the second reference hole can be adjusted by adjusting the installation position of the upper guide plate 22 and the lower guide plate 32. After the adjustment is completed, the upper guide plate 22 and the lower guide plate 32 are locked, and then the inspection fixture 5 is removed, the upper piston head is installed, the cylinder sleeve of the hydraulic cylinder is installed in the second reference hole, and the piston rod 43 and the piston head are inserted into the cylinder barrel. At this time, the coaxiality between the piston head and the cylinder barrel is significantly improved compared with the past, thereby improving the service life of the piston head.

[0078] Specifically, as an optional implementation in this embodiment, Figure 1 and Figure 2 As shown, observation holes 15 are provided on the side panels of the frame 1 on the left and right sides of the crosshead working chamber;

[0079] The frame 1 faces the boring and milling machine sideways, and the boring cutter is installed on the spindle of the boring and milling machine. After adjusting the boring cutter to be coaxial with the spindle hole 11, the spindle hole 11 is bored and milled. After adjusting the boring cutter to be coaxial with the pinion shaft hole 12, the pinion shaft hole 12 is bored and milled. Then the right-angle milling head 8 is installed on the spindle of the boring and milling machine to start processing the first reference hole.

[0080] When processing the first reference hole, the right-angle milling head 8 enters the crosshead working chamber from the observation hole 15 on the side of the frame 1, and then controls the right-angle milling head 8 to move backward first, and simultaneously bores and mills the first reference grooves on the two upper support plates 21 and the lower support plate 31 on the rear side, and then controls the right-angle milling head 8 to exit the observation hole 15, and the angle milling head rotates 180° and enters the crosshead working chamber again, and then controls the right-angle milling head 8 to move forward, and simultaneously bores and mills the first reference grooves on the two upper support plates 21 and the lower support plate 31 on the front side, and after the right-angle milling head 8 completes processing of the first reference hole, it exits the observation hole 15 and continues processing the second reference hole;

[0081] When machining the second reference hole, the right-angle milling head 8 is moved to the front end of the frame 1 , and the right-angle milling head 8 is controlled to move backward to achieve boring and milling of the second reference hole on the front plate of the frame 1 .

[0082] In this embodiment, the processing of the main shaft hole 11, the pinion shaft hole 12, the guide plate mounting hole 13 and the cylinder mounting hole 14 on the frame 1 eliminates the cumulative error of tool positioning and the poor rigidity of the long tool rod, the error of cutting and the error of the workbench angle rotation in the original processing method, which greatly improves the processing accuracy of the mud pump frame 1, the product quality stability is very high, and the production efficiency is greatly improved, reducing the production cost.

[0083] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0084] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0085] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0086] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0087] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0088] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0089] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A mud pump processing method, characterized in that: include A first reference hole for mounting a crosshead (41) and a second reference hole for mounting a hydraulic cylinder are machined on the frame (1); The upper guide plate and the lower guide plate (32) are respectively installed in the first reference hole by installing bolts; The crosshead (41), the intermediate pull rod (42) and the piston rod (43) are connected in advance to form a crosshead rod of an integral structure, and then the crosshead (41) is installed between the upper guide plate (22) and the lower guide plate (32), and a check fixture (5) is installed on the piston rod (43). A dial indicator (74) is provided on the check fixture (5), and the dial indicator (74) cooperates with the second reference hole. During detection, the check fixture (5) is rotated on the piston rod (43), so that the dial indicator (74) detects the center position of the second reference hole, and the installation position of the upper guide plate (22) and the lower guide plate (32) on the frame (1) is adjusted according to the detection result of the dial indicator (74) until the crosshead rod and the second reference hole are on the same axis. Remove the inspection fixture (5), install the piston head at the front end of the piston rod (43), install the cylinder sleeve of the hydraulic end in the second reference hole, and match the piston head with the inner hole of the cylinder sleeve.

2. The mud pump processing method according to claim 1, characterized in that: A crosshead working chamber is provided in the frame (1), a plurality of upper support plates 21 are provided on the top surface of the crosshead working chamber, a plurality of lower support plates (31) are provided on the bottom surface of the chamber, and a first reference groove is provided on both the upper support plates and the lower support plates (31); The back side of the lower guide plate (32) cooperates with the first reference groove of each lower support plate (31), a lower clamping block (33) is arranged between each lower support plate (31), and at least one pair of lower mounting bolts passes through the lower guide plate (32) and is connected to the lower clamping block (33), so as to lock the lower guide plate (32) on each lower support plate (31); The back side of the upper guide plate (22) cooperates with the first reference groove of each upper support plate, an upper clamping block (23) is arranged between each upper support plate, and at least one pair of upper mounting bolts passes through the upper guide plate (22) and is connected to the upper clamping block (23), thereby locking the upper guide plate (22) on each lower support plate (31); Gaskets are suitable for being placed between the lower guide plate (32) and the lower support plate (31), and between the upper guide plate (22) and the upper support plate to adjust the installation height and installation angle of the upper guide plate (22) and the lower guide plate (32) in the crosshead working chamber.

3. The mud pump processing method according to claim 2 is characterized in that: The left and right side panels of the frame (1) of the crosshead working chamber are provided with observation holes (15); When processing the first reference hole, the right-angle milling head (8) enters the crosshead working chamber from the observation hole (15) on the side of the frame (1), and then controls the right-angle milling head (8) to move backward first, and simultaneously bores and mills the first reference groove on the upper support plate and the lower support plate (31) on the rear side, and then controls the right-angle milling head (8) to exit the observation hole (15), and the angle milling head rotates 180 degrees and enters the crosshead working chamber again, and then controls the right-angle milling head (8) to move forward, and simultaneously bores and mills the first reference groove on the upper support plate and the lower support plate (31) on the front side, and after the right-angle milling head (8) completes the processing of the first reference hole, it exits the observation hole (15) and continues to process the second reference hole; When machining the second reference hole, the right-angle milling head (8) is moved to the front end of the frame (1), and the right-angle milling head (8) is controlled to move backward to boring and milling the second reference hole on the front plate of the frame (1).

4. The mud pump processing method according to claim 1, characterized in that: The inspection tool (5) comprises A mounting seat (51), wherein the mounting seat (51) is rotationally matched with the piston rod (43); A bridge plate (7), wherein the rear end of the bridge plate (7) is fixedly connected to the mounting seat (51), and a slide groove (71) is provided on the bridge plate (7); A slide seat (72), wherein a slider is provided at the lower end of the slide seat (72), the slider is inserted into the slide groove (71), and a locking screw at the bottom passes through a lower gasket (73) and is connected to the slider, thereby locking the slide seat (72) on the bridge plate (7); A dial indicator (74), wherein the dial indicator (74) is mounted on the slide seat (72); The mounting seat (51) rotates on the piston rod (43), driving the dial indicator (74) to rotate in the second reference hole.

5. The mud pump processing method according to claim 4, characterized in that: A bearing cavity is provided in the mounting seat (51), an inner retaining ring is formed on the inner side of the bearing cavity, and a cover plate (54) is provided on the outer side of the bearing cavity; Two ball bearings (52), the two ball bearings (52) are arranged in the bearing cavity, a spacer (53) is arranged between the ball bearings (52), and the spacer (53) is matched and abutted with the inner rings of adjacent ball bearings (52); The inner retaining ring and the cover plate (54) are respectively matched with the outer rings of the two roller bearings; The piston mounting section passes through the inner rings of the two ball bearings (52); an inner gasket (55) is arranged between the rear ball bearing (52) and the rear end surface of the piston mounting section; an outer gasket (56) is arranged between the front ball bearing (52) and the locking nut; a locking nut (57) is arranged on the piston mounting section; the locking nut (57) axially locks the outer gasket (56), the spacer (53) and the inner gasket (55).

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