An automatic gauge device for oil tubing

Abstract

The present application relates to oil pipe detection technical field, especially point to a kind of automatic gauge device for oil pipe, including workbench, workbench upper end left and right sides are all fixedly connected with placing rack, workbench upper end both sides are all provided with clamping mechanism, clamping mechanism is used for positioning oil pipe;Workbench right side upper end is fixedly connected with support frame, support frame lower end inside is provided with driving mechanism, support frame inside is passed through with push rod, driving mechanism is used to drive push rod to move;Support frame upper end inside is provided with pressure holding mechanism, pressure holding mechanism corresponds with driving mechanism, and it is used to hold push rod, push rod left end is connected with gauge plate through fixed component, push rod is provided with auxiliary support component, auxiliary support component is used to support the left end of push rod.The present application is provided with driving mechanism and clamping mechanism, namely can complete automatic detection to oil pipe inner diameter, need not worker manually push gauge, effectively reduce the labor intensity of worker, improve detection work efficiency.

Description

Technical Field

[0001] This invention relates to the field of oil pipe inspection technology, and in particular to an automatic diameter measuring device for oil pipes. Background Technology

[0002] In oil extraction, lined tubing and tungsten alloy coated tubing are widely used due to their excellent corrosion resistance and wear resistance. In the final stage of manufacturing these tubings, a gauging test must be performed. This involves using a gauge of a specified size to pass through the inside of the tubing to check for blockages and the smoothness of the lining or coating. This ensures that the tubing will not obstruct tool lowering during well runs and subsequent operations due to internal deformation or blockage.

[0003] Currently, when checking the diameter of oil pipes, the method of manually pushing the gauge into one end of the pipe and then pushing it out from the other end with the help of a push rod is mostly used. In this way, the inner diameter of the oil pipe is checked during the movement of the gauge. Although the above operation can achieve the purpose of detection, manual operation will increase the labor intensity of workers and thus affect the work efficiency. Therefore, it is necessary to design an automatic gauge device for oil pipes. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide an automatic gauging device for oil pipes.

[0005] The technical solution adopted in this invention is as follows: an automatic gauging device for oil pipes, comprising a worktable, with a placement rack fixedly connected to both the left and right sides of the upper end of the worktable for holding oil pipes; clamping mechanisms are provided on both sides of the upper end of the worktable for positioning the oil pipes; a support frame is fixedly connected to the upper right side of the worktable, with a driving mechanism inside the lower end of the support frame, and a push rod passing through the support frame for driving the push rod to move; a pressing mechanism is provided inside the upper end of the support frame, corresponding to the driving mechanism and used to press the push rod; a gauging plate is connected to the left end of the push rod through a fixing component, and an auxiliary support component is provided on the push rod for supporting the left end of the push rod.

[0006] As a further description of the above technical solution: The clamping mechanism includes a first motor, a bidirectional threaded rod, a movable seat, a sliding seat, a V-shaped seat, and a slide rail. The bidirectional threaded rod is rotatably connected inside the worktable. A movable seat is threaded onto the bidirectional threaded rod. Two movable seats are provided and symmetrically distributed on the bidirectional threaded rod. The internal threads of the two movable seats have opposite directions. A sliding seat is fixedly connected to the side end of each movable seat, and a V-shaped seat is fixedly connected to the sliding seat. A slide rail is fixedly connected to the upper end of the worktable, and the slide rail is slidably connected to the sliding seat. A first motor is fixedly connected to the front end of the worktable, and the output end of the first motor is fixedly connected to the bidirectional threaded rod.

[0007] As a further description of the above technical solution: The upper surface of the workbench is provided with a sliding hole, the movable seat is located inside the sliding hole and is slidably connected to the sliding hole; the line connecting the two V-shaped seat angles intersects the axis of the push rod.

[0008] As a further description of the above technical solution: The fixing assembly includes a mounting head and a nut. The left end of the push rod is fixedly connected to the mounting head, a gauge plate is fitted on the mounting head, and a nut is threaded onto the mounting head.

[0009] As a further description of the above technical solution: The auxiliary support assembly includes a rotating cylinder, a movable disk, a support member, a rotating rod, and rollers. A rotating rod is rotatably connected to the left circumference of the push rod via a hinge. Multiple rotating rods are evenly distributed around the push rod. A roller is rotatably connected to the end of each rotating rod away from the push rod. A support member is rotatably connected to the side of the rotating rod near the push rod via a hinge. A movable disk is rotatably connected to the end of the support member away from the rotating rod via a hinge. The movable disk is slidably connected to the push rod. A rotating cylinder is threadedly connected to the left end of the push rod, and the rotating cylinder is rotatably connected to the movable disk.

[0010] As a further description of the above technical solution: The support component includes a connecting cylinder, a movable rod, and a spring. The rotating rod is rotatably connected to the connecting cylinder. The movable rod is slidably connected inside the connecting cylinder. The movable rod is rotatably connected to the movable disk. The spring is fixedly connected inside the connecting cylinder and is fixedly connected to the movable rod.

[0011] As a further description of the above technical solution: The drive mechanism includes a second motor, a rotating shaft, a drive wheel, a synchronous pulley, and a synchronous belt. The rotating shaft is rotatably connected inside the support frame. There are two rotating shafts. The rear ends of both rotating shafts are fixedly connected to synchronous pulleys. The two synchronous pulleys are connected to each other by a synchronous belt. The drive wheel is fixedly connected to both rotating shafts. The front end of the support frame is fixedly connected to the second motor. The output end of the second motor is fixedly connected to one of the rotating shafts.

[0012] As a further description of the above technical solution: The pressing mechanism includes an adjusting screw, a handle, a movable frame, pressing wheels, and a guide rod. The adjusting screw is threadedly connected to the upper end of the support frame. The handle is fixedly connected to the upper end of the adjusting screw. The movable frame is rotatably connected to the lower end of the adjusting screw. Pressing wheels are rotatably connected to the left and right sides of the movable frame, and the pressing wheels correspond to the drive wheels. The guide rod is fixedly connected to the upper end of the movable frame, and the guide rod is slidably connected to the support frame.

[0013] As a further description of the above technical solution: A guide seat is fixedly connected to the upper end of the worktable. The push rod passes through the guide seat and is slidably connected to the guide seat. Guide strips are fixedly connected to both the front and rear sides of the push rod, and the guide strips are slidably connected to the guide seat.

[0014] The present invention has the following beneficial effects: This invention utilizes a drive mechanism and a clamping mechanism to fix the oil pipe on the placement rack and ensure that the oil pipe axis is aligned with the push rod axis. After the oil pipe is fixed, the drive mechanism drives the push rod to move, thereby moving the gauge plate into the oil pipe and completing the automatic detection of the oil pipe's inner diameter. This eliminates the need for workers to manually push the gauge, effectively reducing the labor intensity of workers and improving the efficiency of the detection work.

[0015] This invention, by setting an auxiliary support component, can provide auxiliary support to the left end of the push rod after it enters the oil pipe, preventing the push rod from drooping or shifting due to its own weight, ensuring that the gauge plate always moves along the oil pipe axis, improving the accuracy of the test results, and adapting to the testing needs of oil pipes with different inner diameters. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention from a first-view perspective; Figure 2 This is a schematic diagram of the overall structure of the invention from a second perspective; Figure 3 For the present invention Figure 2 Enlarged view of section A in the middle; Figure 4 For the present invention Figure 2 Enlarged view of section B; Figure 5 This is a schematic diagram of the overall structure of the invention from a third-person perspective; Figure 6 For the present invention Figure 5 Enlarged view of section C; Figure 7 For the present invention Figure 5 Enlarged view of section D in the middle; Figure 8 This is a schematic diagram of the internal structure of the present invention; Figure 9 For the present invention Figure 8 Enlarged view of section E in the middle; Figure 10 This is a schematic diagram of the internal structure of the support component of the present invention.

[0017] Legend: 1. Workbench; 2. Clamping mechanism; 201. First motor; 202. Bidirectional threaded rod; 203. Moving seat; 204. Sliding seat; 205. V-shaped seat; 206. Slide rail; 3. Placement rack; 4. Support frame; 5. Drive mechanism; 501. Second motor; 502. Rotating shaft; 503. Drive wheel; 504. Synchronous pulley; 505. Synchronous belt; 6. Push rod; 7. Pressing mechanism; 701. Adjusting screw; 702. Handle; 703. Moving frame; 704. Pressing roller; 705. Guide rod; 8. Guide seat; 9. Auxiliary support assembly; 901. Rotating cylinder; 902. Moving disc; 903. Support component; 9031. Connecting cylinder; 9032. Moving rod; 9033. Spring; 904. Rotating rod; 905. Roller; 10. Fixing assembly; 1001. Mounting head; 1002. Nut; 11. Gauge plate; 12. Sliding hole; 13. Guide strip. Detailed Implementation

[0018] Reference Figure 1-10 The present invention provides an automatic gauging device for oil pipes, comprising a worktable 1, with a placement rack 3 fixedly connected to both the left and right sides of the upper end of the worktable 1 for holding oil pipes; clamping mechanisms 2 are provided on both sides of the upper end of the worktable 1 for positioning the oil pipes; a support frame 4 is fixedly connected to the upper right side of the worktable 1, with a driving mechanism 5 provided inside the lower end of the support frame 4, and a push rod 6 passing through the support frame 4, the driving mechanism 5 for driving the push rod 6 to move; a pressing mechanism 7 is provided inside the upper end of the support frame 4, corresponding to the driving mechanism 5 and used to press the push rod 6; a gauging plate 11 is connected to the left end of the push rod 6 through a fixing component 10, and an auxiliary support component 9 is provided on the push rod 6 for supporting the left end of the push rod 6.

[0019] In use, the oil pipe to be tested (here, the oil pipe refers to an inner-lined oil pipe or a tungsten-plated alloy oil pipe) is placed on the placement rack 3. Then, the clamping mechanism 2 operates to clamp and fix the oil pipe on the placement rack 3, ensuring that the axis of the oil pipe is aligned with the axis of the push rod 6. Next, the pressing mechanism 7 operates to press the push rod 6 onto the drive mechanism 5. Then, the drive mechanism 5 is activated, causing the push rod 6 to move to the left. The push rod 6 then causes the gauge plate 11 and auxiliary support assembly 9, which are installed on the left end, to gradually extend into the fixed oil pipe. As the auxiliary support assembly 9 enters... After entering the tubing, the opening is adjusted according to the tubing's inner diameter to accommodate tubing of different diameters, improving the device's practicality. After the auxiliary support component 9 contacts the tubing, it counteracts the downward force generated by the push rod 6's own weight, ensuring the gauge plate 11 always moves stably along the tubing's axis. If the tubing's inner diameter meets the standard, the gauge plate 11 can smoothly pass through the left end of the tubing, completing the gauging test. If the tubing's inner diameter is deformed, blocked, or the inner lining coating is uneven, the gauge plate 11 will stop moving at the obstructed position, and the drive mechanism 5 will automatically stop, indicating the tubing is unqualified. After the test, the drive mechanism 5 reverses, causing the push rod 6 and gauge plate 11 to return to their original positions, and the clamping mechanism 2 is released to remove the tested tubing. The same operation can be repeated for the next tubing to be tested. The entire testing process does not require manual pushing of the gauge plate, achieving automated gauging testing.

[0020] The clamping mechanism 2 includes a first motor 201, a bidirectional threaded rod 202, a movable seat 203, a sliding seat 204, a V-shaped seat 205, and a slide rail 206. The bidirectional threaded rod 202 is rotatably connected inside the worktable 1. The movable seat 203 is threadedly connected to the bidirectional threaded rod 202. Two movable seats 203 are provided and symmetrically distributed on the bidirectional threaded rod 202. The internal threads of the two movable seats 203 have opposite directions. A sliding seat 204 is fixedly connected to the side end of the movable seat 203, and a V-shaped seat 205 is fixedly connected to the sliding seat 204. A slide rail 206 is fixedly connected to the upper end of the worktable 1, and the slide rail 206 is slidably connected to the sliding seat 204. The first motor 201 is fixedly connected to the front end of the worktable 1. The output end of motor 201 is fixedly connected to the bidirectional threaded rod 202. During operation, the first motor 201 rotates forward, which drives the bidirectional threaded rod 202 to rotate, thereby driving the moving seat 203 to move. Then, with the cooperation of the sliding seat 204 and the slide rail 206, the V-shaped seat 205 can be driven to move closer to the oil pipe. During the process of the two V-shaped seats 205 moving towards the oil pipe at the same time, the oil pipe is gradually lifted away from the placement frame 3, and the V-shaped surface is automatically aligned and adjusted. Finally, the oil pipe is clamped and positioned above the worktable 1, ensuring that the axis of the oil pipe coincides with the axis of the push rod 6, which meets the alignment requirements of the caliper test. After the test is completed, the first motor 201 reverses, which drives the two V-shaped seats 205 to move away from each other, releasing the clamp on the oil pipe and completing the unloading.

[0021] A sliding hole 12 is provided on the upper surface of the worktable 1. The movable seat 203 is located inside the sliding hole 12 and is slidably connected to the sliding hole 12. The line connecting the two V-shaped seats 205 intersects the axis of the push rod 6. During operation, the sliding hole 12 facilitates the sliding of the movable seat 203 inside the worktable 1. Since the line connecting the two V-shaped seats 205 intersects the axis of the push rod 6, it ensures that the oil pipe after positioning can meet the requirements of detection and alignment.

[0022] The fixing component 10 includes a mounting head 1001 and a nut 1002. The mounting head 1001 is fixedly connected to the left end of the push rod 6. A gauge plate 11 is fitted on the mounting head 1001. The nut 1002 is threaded onto the mounting head 1001. When it is necessary to inspect oil pipes with different inner diameter specifications during operation, the corresponding gauge plate 11 can be replaced by unscrewing the nut 1002. The adjustment is convenient and quick, and it can adapt to the inspection needs of oil pipes with different diameters.

[0023] The auxiliary support assembly 9 includes a rotating cylinder 901, a movable disk 902, a support member 903, a rotating rod 904, and a roller 905. A rotating rod 904 is rotatably connected to the left circumference of the push rod 6 via a hinge. Multiple rotating rods 904 are evenly distributed around the push rod 6. A roller 905 is rotatably connected to the end of the rotating rod 904 away from the push rod 6. A support member 903 is rotatably connected to the side of the rotating rod 904 near the push rod 6 via a hinge. A movable disk 902 is rotatably connected to the end of the support member 903 away from the rotating rod 904 via a hinge. The movable disk 902 is slidably connected to the push rod 6. The rotating cylinder 901 is threadedly connected to the left end of the push rod 6. The movable discs 902 are rotatably connected. During operation, when the push rod 6 pushes the gauge plate 11 into the oil pipe, and the roller 905 is also located inside the oil pipe, the rotating cylinder 901 is rotated. The rotating cylinder 901 moves to the left under the action of the thread of the push rod 6, thereby pushing the movable discs 902 to slide to the left along the push rod 6. During the sliding process, the movable discs 902 push the rotating rod 904 to rotate outward around the hinge on the push rod 6 through the support member 903, thereby driving the roller 905 to move outward, so that the roller 905 fits against the inner wall of the oil pipe, thereby supporting the left end of the push rod 6 and preventing the push rod 6 from drooping due to the increase in its cantilever length, thus ensuring that the gauge plate 11 moves stably along the oil pipe axis.

[0024] The support component 903 includes a connecting cylinder 9031, a moving rod 9032, and a spring 9033. The rotating rod 904 is rotatably connected to the connecting cylinder 9031. The moving rod 9032 is slidably connected inside the connecting cylinder 9031 and is rotatably connected to the moving disk 902. The spring 9033 is fixedly connected inside the connecting cylinder 9031 and is fixedly connected to the moving rod 9032. During operation, as the rotating rod 904 is extended, after the roller 905 contacts the inner wall of the oil pipe, as the rotating rod 904 continues to extend, the moving rod 9032 slides into the connecting cylinder 9031, compressing the spring 9033. The compressed spring 9033 generates a reaction force, which makes the roller 905 fit tightly against the inner wall of the oil pipe, further improving the support stability and preventing the roller 905 from making hard contact with the inner wall of the oil pipe, thus reducing damage to the inner wall of the oil pipe.

[0025] The drive mechanism 5 includes a second motor 501, a rotating shaft 502, a drive wheel 503, a synchronous pulley 504, and a synchronous belt 505. The rotating shaft 502 is rotatably connected inside the support frame 4. Two rotating shafts 502 are provided, and the rear ends of both rotating shafts 502 are fixedly connected to synchronous pulleys 504. The two synchronous pulleys 504 are connected to each other via a synchronous belt 505. Drive wheels 503 are fixedly connected to both rotating shafts 502. The second motor 501 is fixedly connected to the front end of the support frame 4. The output end of the second motor 501 is connected to… One of the rotating shafts 502 is fixedly connected. During operation, the second motor 501 starts and drives the rotating shaft 502 connected to the output end to rotate. The rotating shaft 502 drives the other rotating shaft 502 to rotate synchronously through the synchronous pulley 504 and the synchronous belt 505, which in turn drives the two drive wheels 503 to rotate synchronously. When the push rod 6 is pressed on the two drive wheels 503 with the cooperation of the holding mechanism 7, the drive wheel 503 drives the push rod 6 to move to the left by the friction between it and the push rod 6, thereby realizing the automatic feeding of the push rod 6.

[0026] The holding mechanism 7 includes an adjusting screw 701, a handle 702, a movable frame 703, holding wheels 704, and a guide rod 705. The adjusting screw 701 is threadedly connected to the upper end of the support frame 4. The handle 702 is fixedly connected to the upper end of the adjusting screw 701. The movable frame 703 is rotatably connected to the lower end of the adjusting screw 701. Holding wheels 704 are rotatably connected to the left and right sides of the movable frame 703, and the holding wheels 704 correspond to the drive wheels 503. The guide rod 705 is fixedly connected to the upper end of the movable frame 703. It is slidably connected to the support frame 4. During operation, the handle 702 is turned, which drives the adjusting screw 701 to rotate. When the adjusting screw 701 rotates, it drives the moving frame 703 to move downward under the guidance of the guide rod 705. This causes the moving frame 703 to drive the pressure roller 704 to move downward, and the pressure roller 704 to press on the push rod 6, pressing the push rod 6 tightly on the drive wheel 503 below. This ensures that the drive wheel 503 can obtain sufficient friction to drive the push rod 6 to move, and it is suitable for use with push rods 6 of different thicknesses.

[0027] A guide seat 8 is fixedly connected to the upper end of the workbench 1. The push rod 6 passes through the guide seat 8 and is slidably connected to the guide seat 8. Guide bars 13 are fixedly connected to both the front and rear sides of the push rod 6. The guide bars 13 are slidably connected to the guide seat 8. During operation, the guide seat 8 cooperates with the guide bars 13 to guide the movement of the push rod 6, preventing the push rod 6 from rotating during the movement and ensuring the stability of the movement direction of the gauge plate 11.

[0028] Working principle: The oil pipe to be tested, either lined or coated with tungsten alloy, is placed on the placement rack 3 above the workbench 1. Then, the first motor 201 is started, driving the bidirectional threaded rod 202 to rotate. This rotation causes two movable seats 203 to move closer together along the sliding hole 12, which in turn causes the V-shaped seats 205 to move closer together via the sliding seat 204. During this process, the V-shaped seats 205 lift and center the oil pipe, ultimately clamping and fixing it above the workbench 1, ensuring the oil pipe axis coincides with the push rod 6 axis. Next, the handle 702 is turned, causing the adjusting screw 701 to rotate. The adjusting screw 701 pushes the movable frame 703 and the pressure roller 704 downwards, pressing the push rod 6 against the drive wheel 503. Then, the second motor 501 is started, driving the rotating shaft 502 to rotate. The rotating shaft 502 is synchronized with... Wheel 504 and synchronous belt 505 drive two drive wheels 503 to rotate synchronously. Drive wheel 503 drives push rod 6 to the left by friction, so that push rod 6 drives gauge plate 11 and auxiliary support assembly 9 to extend into the oil pipe. After auxiliary support assembly 9 enters the oil pipe, adjust auxiliary support assembly 9 so that roller 905 always fits against the inner wall of the oil pipe to support the left end of push rod 6, preventing push rod 6 from drooping and ensuring that gauge plate 11 moves stably along the oil pipe axis. If gauge plate 11 can pass through the oil pipe smoothly, the inner diameter of the oil pipe is judged to be qualified. If gauge plate 11 is blocked and stops moving, the oil pipe is judged to be unqualified. After the test is completed, second motor 501 reverses to drive push rod 6 back to its original position. Then first motor 201 reverses to drive two V-shaped seats 205 to move away from each other and release the oil pipe. The tested oil pipe can then be taken out and the next oil pipe can be replaced and the test can be repeated.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic gauging device for oil pipes, comprising a worktable (1), characterized in that: The workbench (1) is fixedly connected to the left and right sides of the upper end with a placement rack (3) for holding oil pipes. The workbench (1) is also provided with a clamping mechanism (2) on both sides of the upper end for positioning oil pipes. The workbench (1) is fixedly connected to the upper right side with a support frame (4). The support frame (4) is provided with a drive mechanism (5) inside the lower end. A push rod (6) passes through the support frame (4). The drive mechanism (5) is used to drive the push rod (6) to move. The support frame (4) is provided with a pressing mechanism (7) inside the upper end. The pressing mechanism (7) corresponds to the drive mechanism (5) and is used to press the push rod (6). The left end of the push rod (6) is connected to a gauge plate (11) through a fixing component (10). An auxiliary support component (9) is provided on the push rod (6). The auxiliary support component (9) is used to support the left end of the push rod (6).

2. The automatic gauging device for oil pipes according to claim 1, characterized in that: The clamping mechanism (2) includes a first motor (201), a bidirectional threaded rod (202), a movable seat (203), a sliding seat (204), a V-shaped seat (205), and a slide rail (206). The bidirectional threaded rod (202) is rotatably connected inside the worktable (1). The movable seat (203) is threadedly connected to the bidirectional threaded rod (202). There are two movable seats (203), which are symmetrically distributed on the bidirectional threaded rod (202). The internal threads are opposite in direction. The sliding seat (204) is fixedly connected to the side end of the movable seat (203), and a V-shaped seat (205) is fixedly connected to the sliding seat (204). A slide rail (206) is fixedly connected to the upper end of the worktable (1), and the slide rail (206) is slidably connected to the sliding seat (204). A first motor (201) is fixedly connected to the front end of the worktable (1), and the output end of the first motor (201) is fixedly connected to the bidirectional threaded rod (202).

3. The automatic gauging device for oil pipes according to claim 2, characterized in that: The upper surface of the workbench (1) is provided with a sliding hole (12), and the movable seat (203) is located inside the sliding hole (12) and is slidably connected to the sliding hole (12); the line connecting the two V-shaped seats (205) intersects the axis of the push rod (6).

4. The automatic gauging device for oil pipes according to claim 1, characterized in that: The fixing component (10) includes a mounting head (1001) and a nut (1002). The left end of the push rod (6) is fixedly connected to the mounting head (1001). A gauge plate (11) is fitted on the mounting head (1001). The nut (1002) is threaded onto the mounting head (1001).

5. The automatic gauging device for oil pipes according to claim 1, characterized in that: The auxiliary support assembly (9) includes a rotating cylinder (901), a movable disk (902), a support member (903), a rotating rod (904), and a roller (905). The left end of the push rod (6) is rotatably connected to the rotating rod (904) via a hinge. Multiple rotating rods (904) are provided and are evenly distributed around the push rod (6). The end of the rotating rod (904) away from the push rod (6) is rotatably connected to the roller (905). The side of the rotating rod (904) near the push rod (6) is rotatably connected to the support member (903) via a hinge. The end of the support member (903) away from the rotating rod (904) is rotatably connected to the movable disk (902) via a hinge. The movable disk (902) is slidably connected to the push rod (6). The left end of the push rod (6) is threadedly connected to the rotating cylinder (901). The rotating cylinder (901) is rotatably connected to the movable disk (902).

6. An automatic gauging device for oil pipes according to claim 5, characterized in that: The support member (903) includes a connecting cylinder (9031), a moving rod (9032), and a spring (9033). The rotating rod (904) is rotatably connected to the connecting cylinder (9031). The moving rod (9032) is slidably connected inside the connecting cylinder (9031). The moving rod (9032) is rotatably connected to the moving disk (902). The spring (9033) is fixedly connected inside the connecting cylinder (9031). The spring (9033) is fixedly connected to the moving rod (9032).

7. An automatic gauging device for oil pipes according to claim 1, characterized in that: The drive mechanism (5) includes a second motor (501), a rotating shaft (502), a drive wheel (503), a synchronous pulley (504), and a synchronous belt (505). The rotating shaft (502) is rotatably connected inside the support frame (4). There are two rotating shafts (502). The rear ends of the two rotating shafts (502) are fixedly connected to synchronous pulleys (504). The two synchronous pulleys (504) are connected to each other by a synchronous belt (505). The drive wheel (503) is fixedly connected to the two rotating shafts (502). The front end of the support frame (4) is fixedly connected to the second motor (501). The output end of the second motor (501) is fixedly connected to one of the rotating shafts (502).

8. An automatic gauging device for oil pipes according to claim 7, characterized in that: The pressing mechanism (7) includes an adjusting screw (701), a handle (702), a moving frame (703), a pressing wheel (704), and a guide rod (705). The upper end of the support frame (4) is internally threaded with the adjusting screw (701). The upper end of the adjusting screw (701) is fixedly connected with the handle (702). The lower end of the adjusting screw (701) is rotatably connected with the moving frame (703). The left and right sides of the moving frame (703) are rotatably connected with the pressing wheel (704). The pressing wheel (704) corresponds to the drive wheel (503). The upper end of the moving frame (703) is fixedly connected with the guide rod (705). The guide rod (705) is slidably connected to the support frame (4).

9. An automatic gauging device for oil pipes according to claim 1, characterized in that: The upper end of the workbench (1) is fixedly connected to a guide seat (8), the push rod (6) passes through the guide seat (8) and is slidably connected to the guide seat (8), and guide strips (13) are fixedly connected to both the front and rear sides of the push rod (6), and the guide strips (13) are slidably connected to the guide seat (8).

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