Boring and milling device special for flow channel of oil well pump body of petroleum pipeline

Abstract

The utility model relates to the technical field of petroleum equipment processing, and discloses a special boring and milling device for a petroleum pipeline oil well pump body runner, which comprises a vertical frame and a rotary table, a lifting working block is slidably connected to the inner side of the vertical frame, and a tool bit fixing block is fixedly connected to the outer side of the lifting working block. A tool bit fixing block is fixedly connected to the top of the rotary table, a quick-release tool bit mechanism is fixedly connected to the outer side of the tool bit fixing block, a positioning and clamping mechanism is fixedly connected to the top of the rotary table, the quick-release tool bit mechanism comprises a boring and milling tool bit, and the outer side of the boring and milling tool bit is slidably connected to the inner side of the tool bit fixing block. According to the utility model, the quick dismounting tool bit mechanism can realize quick dismounting and locking of the boring and milling tool bit by pressing or pulling the unlocking pull rod, the tool changing time is shortened, the efficiency is improved and the precision is ensured, and the positioning and clamping mechanism firstly positions the pump body by an inner support arc-shaped block and then clamps the pump body by a fixed clamping jaw, so that the displacement and looseness of the pump body are reduced, and the machining precision and the yield are improved; the stability is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to petroleum equipment processing technical field especially relates to special boring and milling device of oil pipeline pumping unit body flow channel. BACKGROUND

[0002] The oil pipeline pumping unit is the key equipment in the oil exploitation, and it can extract and transport the underground crude oil to the ground. Under the environment of the global demand for oil energy continues to grow, efficient oil exploitation is very important. The pumping unit overcomes the resistance of the crude oil in the pipeline through mechanical action, ensures that the crude oil flows to the gathering system stably and efficiently, plays a core role in maintaining the normal operation of the oil industry, and is an indispensable part of the oil industry chain.

[0003] The oil pipeline pumping unit body flow channel is the channel for the crude oil to flow in the pump body, and the fluency directly affects the working efficiency of the pumping unit. In industrial production, good pump body flow channel ensures the smooth transportation of the crude oil and maintains the normal operation of the factory; in daily life, stable oil supply ensures energy demand. The special boring and milling device mainly comprises a boring cutter, a milling cutter, a power system and a control system. The boring cutter is used for accurate boring of the inner diameter of the body flow channel, the milling cutter is responsible for milling the inner wall of the flow channel, the power system provides power, and the control system accurately controls the boring and milling process from positioning, boring to milling, ensuring the machining precision of the body flow channel.

[0004] In the traditional processing of the oil pipeline pumping unit body flow channel, the tool changing process is very inconvenient, and the boring and milling cutter head needs to be removed through complex operation, which consumes a lot of time and leads to low processing efficiency. Moreover, due to the complicated operation, it is difficult to ensure the machining precision, the tool wear affects the product quality, and the positioning and clamping of the pump body are not stable. Only manual rough positioning is used, and the pump body is easy to shift and loosen during processing, resulting in low machining precision and product yield. Therefore, the special boring and milling device for the oil pipeline pumping unit body flow channel is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a special boring and milling device for the oil pipeline pumping unit body flow channel, which aims to improve the tool changing operation of the boring and milling cutter head and the positioning and clamping of the pump body in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The special boring and milling device for the oil pipeline pumping unit body flow channel comprises a stand, a rotary table, a lifting working block slidingly connected to the inner side of the stand, a cutter head fixing block fixedly connected to the outer side of the lifting working block, a quick release cutter head mechanism fixedly connected to the outer side of the cutter head fixing block, and a positioning and clamping mechanism fixedly connected to the top of the rotary table.

[0008] The quick-release tool head mechanism comprises a boring and milling tool head, the outer side of the boring and milling tool head is slidably connected to the inner side of the tool head fixing block, the inner side of the tool head fixing block is slidably connected with a locking assembly, the inner side of the tool head fixing block is slidably connected with an unlocking pull rod, the outer side of the unlocking pull rod is sleeved with a reset spring one, one end of the reset spring one is fixedly connected to the outer side of the unlocking pull rod, the other end of the reset spring one is fixedly connected to the inner side of the tool head fixing block, the bottom of the unlocking pull rod is fixedly connected with a conical unlocking block, and the outer side of the conical unlocking block is slidably connected to the inner side of the tool head fixing block.

[0009] As a further description of the above technical scheme:

[0010] The positioning and clamping mechanism comprises a pump body pillow, the bottom of the pump body pillow is fixedly connected to the top of the rotary table, the outer side of the pump body pillow is fixedly connected with a clamping fixing assembly, and the outer side of the rotary table is fixedly connected with an inner support positioning assembly.

[0011] As a further description of the above technical scheme:

[0012] The locking assembly comprises a locking push rod, the outer side of the locking push rod is slidably connected to the inner side of the tool head fixing block, the outer side of the locking push rod is sleeved with a reset spring two, one end of the reset spring two is fixedly connected to the outer side of the locking push rod, the other end of the reset spring two is fixedly connected to the inner side of the tool head fixing block, one end of the locking push rod is slidably connected to the inner side of the locking groove of the boring and milling tool head, and the other end of the locking push rod is slidably connected to the outer side of the conical surface of the conical unlocking block.

[0013] As a further description of the above technical scheme:

[0014] The bottom of the stand is fixedly connected with a moving seat one, the bottom of the moving seat one is slidably connected with a machining table one, the outer side of the machining table one is fixedly connected with a machining table two, the outer side of the machining table two is slidably connected with a moving seat two, and the bottom of the rotary table is rotatably connected to the top of the moving seat two.

[0015] As a further description of the above technical scheme:

[0016] The inner support positioning assembly comprises a positioning disc, the outer side of the positioning disc is fixedly connected to the outer side of the rotary table, the outer side of the rotary table is fixedly connected with a positioning motor, the output end of the positioning motor is fixedly connected with a driving gear on the outer side, the outer side of the positioning disc is rotatably connected with a driven gear, and the driven gear and the driving gear are rotatably connected in meshing connection.

[0017] As a further description of the above technical scheme:

[0018] The inner side of the driven gear is provided with a plurality of arc-shaped sliding grooves, the sliding grooves of the driven gear are slidably connected with sliding columns, the outer side of the sliding column is fixedly connected with an inner supporting arc-shaped block, the outer side of the inner supporting arc-shaped block is slidably connected in the sliding groove of the positioning disc, the outer side of the inner supporting arc-shaped block is fixedly connected with an anti-skid strip, and the outer side of the positioning disc is fixedly connected with a protective cover.

[0019] As a further description of the above technical solution:

[0020] The clamping and fixing assembly comprises a fixing cylinder, the output end of the fixing cylinder is fixedly connected with a fixing cross rod, and sliding grooves are formed in the two ends of the fixing cross rod.

[0021] As a further description of the above technical solution:

[0022] The sliding groove of the fixing cross rod is slidably connected with a fixing connecting rod, the outer side of the pump body pillow is fixedly connected with a rotating shaft, the outer side of the rotating shaft is rotatably connected in the middle section of the fixing connecting rod, and a fixing clamping jaw is rotatably connected to the end of the fixing connecting rod, which is away from the fixing cross rod.

[0023] The utility model has the advantages of the following beneficial effects:

[0024] 1、the utility model discloses a quick -detachable tool bit mechanism is pressed inwards to the unlocking pull rod, overcomes the reset spring one elastic force and drives the conical unlocking block to slide inwards, and then pushes the locking push rod and contracts, and the locking of boring and milling tool bit is cancelled, realizes the tool bit removal, after inserting the new tool bit, the unlocking pull rod is pulled outward, and the locking push rod expands and is locked into the tool bit locking groove and is completed locking, thereby realize boring and milling tool bit's quick replacement, greatly shorten the tool changing time, improve processing efficiency, and the operation is simple, can effectively guarantee the machining accuracy, reduce the adverse effect that brings because of tool wear.

[0025] 2、the utility model discloses positioning and clamping mechanism first place the pump body in the pump body pillow recess, starts the positioning motor, drives the driving gear and drives the driven gear rotation, makes the sliding column push the inner supporting arc-shaped block and supports the positioning pump body, and then starts the fixing cylinder, drives the fixing connecting rod through the fixing cross rod, and the fixing clamping jaw clamps the pump body, thereby realized the stable and accurate positioning and clamping of pump body, effectively reduce the displacement and slack of pump body when processing, greatly improve the processing accuracy and product yield, guarantee the stability and reliability of processing. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the three -dimensional schematic view of boring and milling device for special boring and milling of oil pipeline pumping body flow passage that the utility model proposes;

[0027] Figure 2 It is the structural schematic view of pump body pillow of boring and milling device for special boring and milling of oil pipeline pumping body flow passage that the utility model proposes;

[0028] Figure 3 This is a schematic diagram of the fixed cylinder of the special boring and milling device for the flow channel of an oil pipeline pump body proposed in this utility model.

[0029] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0030] Figure 5 This is a schematic diagram of the conical unlocking block of the special boring and milling device for the flow channel of the oil pipeline pump body proposed in this utility model.

[0031] Legend:

[0032] 1. Machining table 1; 2. Movable seat 1; 3. Stand; 4. Lifting working block; 5. Cutter head fixing block; 6. Unlocking lever; 7. Return spring 1; 8. Conical unlocking block; 9. Locking push rod; 10. Return spring 2; 11. Boring and milling cutter head; 12. Machining table 2; 13. Movable seat 2; 14. Turntable; 15. Pump body pillow; 16. Fixed cylinder; 17. Fixed crossbar; 18. Fixed connecting rod; 19. Rotary shaft; 20. Fixed gripper; 21. Positioning plate; 22. Positioning motor; 23. Drive gear; 24. Driven gear; 25. Sliding column; 26. Inner support arc block; 27. Anti-slip strip; 28. Protective cover. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 1 , Figure 2 and Figure 5 This utility model provides an embodiment of a special boring and milling device for the flow channel of an oil pipeline pump, including a frame 3 and a turntable 14. The frame 3 provides precise guidance for the vertical movement of the lifting working block 4 and can withstand the cutting force and vibration during the processing. The turntable 14 can achieve precise rotational movement. The lifting working block 4 is slidably connected to the inner side of the frame 3. The lifting working block 4 cooperates with the linear guide rail of the frame 3 through a slider to achieve smooth vertical sliding. The outer side of the lifting working block 4 is fixedly connected to a cutter head fixing block 5. The cutter head fixing block 5 provides high-precision installation and positioning for the boring and milling cutter head 11, accommodates and coordinates with locking components, unlocking pull rods 6 and other components to achieve quick locking and unlocking of the cutter head. It is also equipped with a coolant channel to assist in processing. The outer side of the cutter head fixing block 5 is fixedly connected to a quick-release cutter head mechanism. The top of the turntable 14 is fixedly connected to a positioning clamping mechanism.

[0035] The quick-release tool head mechanism comprises a boring and milling tool head 11, which has high hardness, high wear resistance and good cutting performance. The outer side of the boring and milling tool head 11 is slidingly connected to the inner side of the tool head fixing block 5. The inner side of the tool head fixing block 5 is slidingly connected with a locking assembly. The inner side of the tool head fixing block 5 is slidingly connected with an unlocking pull rod 6. The outer side of the unlocking pull rod 6 is smooth and well matched with the sliding hole in the tool head fixing block 5. A reset spring 1 is sleeved on the outer side of the unlocking pull rod 6. The reset spring 1 provides a reset elastic force for the unlocking pull rod 6, so that it can return to the initial position after unlocking operation, ensuring the normal working process of the quick-release tool head mechanism. One end of the reset spring 1 is fixedly connected to the outer side of the unlocking pull rod 6, and the other end of the reset spring 1 is fixedly connected to the inner side of the tool head fixing block 5. The bottom of the unlocking pull rod 6 is fixedly connected with a conical unlocking block 8. The width of the cross section of the conical unlocking block 8 gradually changes with the sliding of the conical unlocking block 8, thereby realizing the opening and closing control of the locking push rod 9 in contact with the conical unlocking block 8. The outer side of the conical unlocking block 8 is slidingly connected to the inner side of the tool head fixing block 5.

[0036] The locking assembly comprises a locking push rod 9. Under the support of the reset spring 2 10 and the conical unlocking block 8, the locking push rod 9 is clamped into the locking groove of the boring and milling tool head 11, thereby realizing reliable locking of the tool head in the tool head fixing block 5, ensuring the stability of the tool head during machining. The outer side of the locking push rod 9 is slidingly connected to the inner side of the tool head fixing block 5. The outer side of the locking push rod 9 is sleeved with a reset spring 2 10. The reset spring 2 10 pushes the locking push rod 9 towards the locking groove of the boring and milling tool head 11, thereby realizing reliable locking of the tool head. One end of the reset spring 2 10 is fixedly connected to the outer side of the locking push rod 9, and the other end of the reset spring 2 10 is fixedly connected to the inner side of the tool head fixing block 5. One end of the locking push rod 9 is slidingly connected to the inner side of the locking groove of the boring and milling tool head 11, and the other end of the locking push rod 9 is slidingly connected to the outer side of the conical surface of the conical unlocking block 8.

[0037] The bottom of the stand 3 is fixedly connected with a moving seat 1. The bottom of the moving seat 1 is slidingly connected with a machining table 1. The moving seat 1 is connected with the machining table 1 through a linear guide rail and a ball screw pair, and can realize accurate horizontal movement on the top of the machining table 1. On the outer side of the machining table 1, a protective fence and a chip removal groove are arranged. The protective fence can prevent iron filings, cooling liquid and the like from splashing out during machining. The chip removal groove can collect iron filings and cooling liquid and discharge them through a chip removal device. The outer side of the machining table 1 is fixedly connected with a machining table 2 12. The outer side of the machining table 2 12 is slidingly connected with a moving seat 2 13. The bottom of the rotating table 14 is rotatably connected to the top of the moving seat 2 13. The moving seat 2 13 can realize accurate horizontal movement on the outer side of the machining table 2 12.

[0038] Referring to Figures 1 to 4The positioning and clamping mechanism comprises a pump pillow 15, the groove part of the pump pillow 15 is accurately matched with the contour of the pump body, and the pump pillow 15 can provide stable support for the pump body; the bottom of the pump pillow 15 is fixedly connected to the top of the rotary table 14, and the outer side of the pump pillow 15 is fixedly connected with a clamping and fixing assembly; the outer side of the rotary table 14 is fixedly connected with an inner support positioning assembly;

[0039] The inner support positioning assembly comprises a positioning disc 21, the outer side of the positioning disc 21 is provided with a plurality of sliding grooves and mounting holes for mounting components such as a driven gear 24 and an inner support arc block 26, the outer side of the positioning disc 21 is fixedly connected to the outer side of the rotary table 14, the outer side of the rotary table 14 is fixedly connected with a positioning motor 22, the positioning motor 22 provides an inner support driving force, the output end of the positioning motor 22 is fixedly connected with a driving gear 23, the driving gear 23 transmits the rotating force of the positioning motor 22, and the outer side of the positioning disc 21 is rotatably connected with the driven gear 24; the driven gear 24 and the driving gear 23 have high meshing accuracy, so that the stability and accuracy of transmission can be ensured; and the driven gear 24 and the driving gear 23 are rotatably connected with each other.

[0040] A plurality of arc-shaped sliding grooves are formed in the inner side of the driven gear 24, and a sliding column 25 is slidably connected to the inner side of the sliding groove of the driven gear 24; the sliding column 25 can drive the subsequent components to move, so that the rotating movement of the driven gear 24 is converted into the linear movement of the subsequent components; the outer side of the sliding column 25 is fixedly connected with the inner support arc block 26, the shape of the inner support arc block 26 is matched with the inner side contour of the pump body, so that stable support and positioning can be provided; the outer side of the inner support arc block 26 is slidably connected to the inner side of the sliding groove of the positioning disc 21, the outer side of the inner support arc block 26 is fixedly connected with an anti-skid strip 27, the anti-skid strip 27 can effectively prevent the pump body from rotating during the machining process, the outer side of the positioning disc 21 is fixedly connected with a protective cover 28, the shape of the protective cover 28 is matched with the positioning disc 21 and the inner support arc block 26, so that the internal structure of the inner support positioning assembly can be closed, the iron filings, cooling liquid and the like in the machining process are prevented from entering, and meanwhile, the working condition of the inner support positioning assembly can be observed by the operator;

[0041] The clamping and fixing assembly comprises a fixed air cylinder 16, the fixed air cylinder 16 provides stable and accurate clamping driving force, the output end of the fixed air cylinder 16 is fixedly connected with a fixed cross rod 17, the fixed cross rod 17 can realize smooth sliding and flexible rotation of a fixed connecting rod 18, and sliding grooves are formed in the two ends of the fixed cross rod 17.

[0042] The sliding groove of the fixed cross bar 17 is slidably connected with a fixed connecting rod 18, and the fixed cross bar 17 converts the linear motion of the fixed cylinder 16 into the rotary motion of the fixed connecting rod 18 through the limiting action of the sliding groove during the movement, so as to drive the fixed clamping jaw 20 to clamp the pump body, and the outer side of the pump body pillow 15 is fixedly connected with a rotary shaft 19, the outer side of the rotary shaft 19 is rotatably connected in the middle section of the fixed connecting rod 18, and the end of the fixed connecting rod 18 away from the fixed cross bar 17 is rotatably connected with the fixed clamping jaw 20, which can prevent the pump body from sliding during the machining process and stably clamp and fix the pump body.

[0043] Working principle: when the boring and milling machining is needed, the pump body needs to be fixed, first, the pump body is placed in the recess of the pump body pillow 15, and then is slid to the outside of the protective cover 28 along the direction of the recess, at this time, the positioning motor 22 is started, the positioning motor 22 drives the driving gear 23 to rotate, the rotation of the driving gear 23 drives the driven gear 24 to rotate, the rotation of the driven gear 24 drives the slide column 25 to move along the arc-shaped sliding groove, and under the limiting of the positioning disc 21, the slide column 25 drives the inner supporting arc-shaped block 26 to slide outwards, so that the inner supporting arc-shaped block 26 drives the anti-skid strip 27 to support outwardly, stably positioning the inner side of one end of the pump body, then the fixed cylinder 16 is started, the fixed cylinder 16 pushes the fixed cross bar 17 upwards, the upward movement of the fixed cross bar 17 is converted into the rotary motion of the fixed connecting rod 18 under the limiting of the sliding groove, then the fixed connecting rod 18 rotates around the rotary shaft 19, and the fixed connecting rod 18 drives the fixed clamping jaw 20 to clamp and fix the pump body, so that the displacement and looseness of the pump body during the machining process are reduced, and the machining precision and the yield of the product are improved;

[0044] When machining, the moving seat two 13 can slide along the machining table two 12, the rotary table 14 can rotate on the top of the moving seat two 13, and the moving seat one 2 with the stand 3 slides on the top of the machining table one 1, when the lifting working block 4 slides to the appropriate position on the stand 3, the cutter head fixing block 5 outside the lifting working block 4 drives the boring and milling cutter head 11 to boring and milling machine the pump body;

[0045] After a certain number of processing, the boring and milling cutter head 11 will produce a certain wear, in order to ensure the machining precision and effect, the boring and milling cutter head 11 needs to be replaced, at this time, the unlocking pull rod 6 is pressed inward, the unlocking pull rod 6 drives the conical unlocking block 8 to slide inward under the elastic force of the reset spring one 7, with the conical unlocking block 8 sliding inward, the locking push rod 9 in contact with the conical surface of the conical unlocking block 8 begins to shrink inward, when the locking push rod 9 is retracted to the limit of the cutter head fixing block 5 under the elastic force of the reset spring two 10, the locking push rod 9 is away from the locking groove of the boring and milling cutter head 11, so that the locking of the boring and milling cutter head 11 is released, at this time, the boring and milling cutter head 11 can be pulled out outward, the quick disassembly of the boring and milling cutter head 11 is completed, then the new boring and milling cutter head 11 is inserted into the inside of the cutter head fixing block 5, the unlocking pull rod 6 is pulled out outward, the outward expansion of the locking push rod 9 can be realized, when the locking push rod 9 is clamped to the inside of the locking groove of the boring and milling cutter head 11, the quick locking of the boring and milling cutter head 11 is completed.

[0046] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. within the spirit and principles of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A boring and milling device for the flow channel of an oil pipeline pump, comprising a frame (3) and a turntable (14), characterized in that: The inner side of the upright frame (3) is slidably connected to a lifting working block (4), the outer side of the lifting working block (4) is fixedly connected to a cutter head fixing block (5), the outer side of the cutter head fixing block (5) is fixedly connected to a quick-release cutter head mechanism, and the top of the turntable (14) is fixedly connected to a positioning clamping mechanism. The quick-release cutter head mechanism includes a boring and milling cutter head (11). The outer side of the boring and milling cutter head (11) is slidably connected to the inner side of the cutter head fixing block (5). A locking component is slidably connected to the inner side of the cutter head fixing block (5). An unlocking lever (6) is slidably connected to the inner side of the cutter head fixing block (5). A return spring (7) is sleeved on the outer side of the unlocking lever (6). One end of the return spring (7) is fixedly connected to the outer side of the unlocking lever (6). The other end of the return spring (7) is fixedly connected to the inner side of the cutter head fixing block (5). A conical unlocking block (8) is fixedly connected to the bottom of the unlocking lever (6). The outer side of the conical unlocking block (8) is slidably connected to the inner side of the cutter head fixing block (5).

2. The special boring and milling device for the flow channel of an oil pipeline pump body according to claim 1, characterized in that: The positioning and clamping mechanism includes a pump body pillow (15), the bottom of which is fixedly connected to the top of the turntable (14), a clamping and fixing assembly is fixedly connected to the outside of the pump body pillow (15), and an inner support positioning assembly is fixedly connected to the outside of the turntable (14).

3. The special boring and milling device for the flow channel of an oil pipeline pump body according to claim 1, characterized in that: The locking assembly includes a locking push rod (9), the outer side of which is slidably connected to the inner side of the tool head fixing block (5). A second return spring (10) is sleeved on the outer side of the locking push rod (9). One end of the second return spring (10) is fixedly connected to the outer side of the locking push rod (9), and the other end of the second return spring (10) is fixedly connected to the inner side of the tool head fixing block (5). One end of the locking push rod (9) is slidably connected to the inner side of the locking groove of the boring and milling cutter head (11), and the other end of the locking push rod (9) is slidably connected to the outer side of the conical surface of the conical unlocking block (8).

4. The special boring and milling device for the flow channel of an oil pipeline pump body according to claim 1, characterized in that: The bottom of the stand (3) is fixedly connected to a movable seat (2), the bottom of the movable seat (2) is slidably connected to a processing table (1), the outer side of the processing table (1) is fixedly connected to a processing table (12), the outer side of the processing table (12) is slidably connected to a movable seat (13), and the bottom of the turntable (14) is rotatably connected to the top of the movable seat (13).

5. The special boring and milling device for the flow channel of an oil pipeline pump body according to claim 2, characterized in that: The inner support positioning assembly includes a positioning disk (21), the outer side of which is fixedly connected to the outer side of the turntable (14), a positioning motor (22) is fixedly connected to the outer side of the turntable (14), a drive gear (23) is fixedly connected to the outer side of the output end of the positioning motor (22), and a driven gear (24) is rotatably connected to the outer side of the positioning disk (21), and the driven gear (24) meshes with the drive gear (23).

6. The special boring and milling device for the flow channel of an oil pipeline pump body according to claim 5, characterized in that: The driven gear (24) has multiple arc-shaped grooves on its inner side. A sliding column (25) is slidably connected to the inner side of the groove of the driven gear (24). An inner support arc block (26) is fixedly connected to the outer side of the sliding column (25). The outer side of the inner support arc block (26) is slidably connected to the inner side of the groove of the positioning disk (21). An anti-slip strip (27) is fixedly connected to the outer side of the inner support arc block (26). A protective cover (28) is fixedly connected to the outer side of the positioning disk (21).

7. The special boring and milling device for the flow channel of an oil pipeline pump body according to claim 2, characterized in that: The clamping and fixing assembly includes a fixing cylinder (16), and a fixing crossbar (17) is fixedly connected to the outer side of the output end of the fixing cylinder (16). The two ends of the fixing crossbar (17) are provided with sliding grooves.

8. The special boring and milling device for the flow channel of an oil pipeline pump body according to claim 7, characterized in that: A fixed connecting rod (18) is slidably connected to the inner side of the groove of the fixed crossbar (17), and a rotating shaft (19) is fixedly connected to the outer side of the pump body pillow (15). The outer side of the rotating shaft (19) is rotatably connected to the middle section of the fixed connecting rod (18), and a fixed clamp (20) is rotatably connected to the end of the fixed connecting rod (18) away from the fixed crossbar (17).

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