High-precision seamless steel tube inner and outer diameter measuring device

Abstract

According to the technical scheme, the high-precision seamless steel tube inner and outer diameter measuring device comprises a control box and a measuring table, supporting seats are installed on the two sides, close to the middle, of the top of the measuring table, and bearings are installed on the portions, close to the tops, of the supporting seats on the two sides through positioning shafts; electric expansion pieces are installed on the front surface and the rear surface of the middle of the bottom of the measuring table, lifting bases are installed on output shafts of the electric expansion pieces, a conveying belt is installed on the tops of the lifting bases, sliding blocks are installed on the side, close to the supporting base, of the top of the measuring table through dovetail grooves, and clamping plates are installed on the tops of the sliding blocks. The high-precision seamless steel tube inner and outer diameter measuring device solves the problems that when an existing seamless steel tube inner and outer diameter measuring mechanism is used for measuring, a seamless steel tube cannot be conveniently rotated to be measured in all directions, and the precision of inner and outer diameter measuring data of the seamless steel tube is poor, and the inner and outer diameter measuring precision of the seamless steel tube is improved.

Description

Technical Field

[0001] This utility model relates to the field of seamless steel pipe production technology, specifically a high-precision device for measuring the inner and outer diameters of seamless steel pipes. Background Technology

[0002] Seamless steel pipe is a type of steel pipe without welded joints. It is usually produced through solid-state pressure processing or rotary processing. This type of steel pipe has no obvious weld seams, thus possessing high strength and pressure resistance. It is suitable for various high-pressure, high-temperature, or critical engineering and applications. Seamless steel pipe is commonly used in petroleum, chemical, natural gas, heating, and water supply fields. It is highly favored for its excellent sealing and corrosion resistance. After the seamless steel pipe is produced, a measuring agency is required to measure the inner and outer diameters of the seamless steel pipe.

[0003] Existing seamless steel pipe inner and outer diameter measuring mechanisms cannot easily rotate the seamless steel pipe to perform omnidirectional measurements, resulting in poor accuracy of the inner and outer diameter measurement data. Therefore, we propose a high-precision seamless steel pipe inner and outer diameter measuring device. Utility Model Content

[0004] The purpose of this invention is to provide a high-precision seamless steel pipe inner and outer diameter measuring device, which can measure the inner and outer diameters of seamless steel pipes in all aspects, so as to solve the problem that existing seamless steel pipe inner and outer diameter measuring mechanisms cannot easily rotate the seamless steel pipe to measure it in all aspects, resulting in poor accuracy of the inner and outer diameter measurement data.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-precision seamless steel pipe inner and outer diameter measuring device, comprising a control box and a measuring platform, wherein support seats are installed on both sides of the top of the measuring platform near the middle, and bearings are installed on both sides of the support seats near the top via positioning shafts; electric telescopic devices are installed on the front and rear surfaces of the bottom of the measuring platform, and lifting seats are installed on the output shafts of the electric telescopic devices; a conveyor belt is installed on the top of the lifting seats; a slider is installed on the side of the top of the measuring platform near the support seats via a dovetail groove, and a clamping plate is installed on the top of the slider.

[0006] Preferably, a motor frame is installed on the front surface of the measuring platform at the dovetail groove position, a drive motor is installed on the front surface of the motor frame, and a rotating shaft is installed on the output shaft of the drive motor.

[0007] Preferably, the rotating shaft is sleeved inside the sliders on both sides, and the rotating shaft and the sliders are connected by a threaded connection, with the threads on the outer surface of the rotating shaft arranged in opposite directions.

[0008] Preferably, a scale is installed on the measuring platform near the dovetail groove, a measuring needle is installed on the slider near the scale, and a reinforcing rib is installed at the gap between the clamp and the slider.

[0009] Preferably, a fixed frame is installed on the top of the measuring platform away from the middle of the dovetail groove, a lifting motor is installed on the top of the fixed frame, a lead screw is installed on the output shaft of the lifting motor, and a measuring plate A is sleeved on the outer surface of the lead screw.

[0010] Preferably, a measuring motor is installed on one side of the bottom of the measuring plate A, a measuring shaft is installed on the output shaft of the measuring motor, a measuring plate B is sleeved on the outer surface of the measuring shaft, and steel balls are installed on the opposite sides of the measuring plate A and the measuring plate B near their ends.

[0011] Preferably, the measuring shaft and the measuring plate B are connected by a threaded connection, and a limiting rod is installed at the bottom of the measuring plate B, the limiting rod passing through the interior of the measuring plate A.

[0012] Preferably, a control box is installed on one side of the measuring platform near the front surface, and an infrared ranging sensor is installed on the top of the measuring plate A near the lead screw.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model achieves the effect of conveniently measuring the inner and outer diameters of seamless steel pipes by setting bearings, electric telescopic devices and conveyor belts. This solves the problem that existing seamless steel pipe inner and outer diameter measuring mechanisms cannot easily rotate the seamless steel pipe to measure it from all angles, resulting in poor accuracy of the inner and outer diameter measurement data. This invention improves the accuracy of the inner and outer diameter measurement of seamless steel pipes.

[0015] 2. This utility model achieves rapid measurement of the outer diameter of seamless steel pipes by setting up a drive motor, rotating shaft, slider, measuring needle and clamping plate, so as to solve the problem that the existing seamless steel pipes mainly rely on manual measurement of the outer diameter, which has poor measurement accuracy. It improves the measurement accuracy of seamless steel pipes and improves the measurement efficiency.

[0016] 3. This utility model achieves accurate measurement of the inner diameter of seamless steel pipes by setting up a measuring plate A, a measuring motor, a measuring shaft, an infrared ranging sensor, and a measuring plate B. This solves the problem that the existing measurement of the inner diameter of seamless steel pipes requires manual data reading and has poor measurement accuracy. It improves the measurement accuracy of the inner diameter of seamless steel pipes and also improves the measurement efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 for Figure 1 A magnified structural diagram of A;

[0019] Figure 3 This is a side view of the structure of this utility model;

[0020] Figure 4 for Figure 3 A magnified structural diagram of B in the diagram;

[0021] Figure 5 This is a side view of the clamping plate and slider of this utility model.

[0022] Reference numerals: 1. Control box; 2. Measuring platform; 3. Lifting seat; 4. Electric telescopic device; 5. Support seat; 6. Bearing; 7. Conveyor belt; 8. Positioning shaft; 9. Fixing frame; 10. Lead screw; 11. Measuring motor; 12. Infrared distance sensor; 13. Limit rod; 14. Measuring plate A; 15. Measuring plate B; 16. Steel ball; 17. Measuring shaft; 18. Lifting motor; 19. Scale; 20. Dovetail groove; 21. Drive motor; 22. Motor frame; 23. Measuring needle; 24. Slider; 25. Clamping plate; 26. Reinforcing rib; 27. Rotating shaft. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1

[0025] like Figure 1 and Figure 3-5 As shown, to achieve the above objectives, this utility model provides the following technical solution: a high-precision seamless steel pipe inner and outer diameter measuring device, including a control box 1 and a measuring platform 2. Support seats 5 are installed on both sides of the top of the measuring platform 2 near the middle. Bearings 6 are installed on both sides of the support seats 5 near the top via positioning shafts 8. Electric telescopic devices 4 are installed on the front and rear surfaces of the bottom middle of the measuring platform 2. Lifting seats 3 are installed on the output shaft of the electric telescopic devices 4. A transmission belt 7 is installed on the top of the lifting seats 3. The seamless steel pipe is rotated by the transmission belt 7. A slider 24 is installed on the side of the top of the measuring platform 2 near the support seats 5 via a dovetail groove 20. A clamping plate 25 is installed on the top of the slider 24.

[0026] like Figure 3-5As shown, a motor frame 22 is installed on the front surface of the measuring platform 2 at the position of the dovetail groove 20. A drive motor 21 is installed on the front surface of the motor frame 22. A rotating shaft 27 is installed on the output shaft of the drive motor 21. The rotating shaft 27 is sleeved inside the sliders 24 on both sides. The rotating shaft 27 and the sliders 24 are connected by a threaded connection. The threads on the outer surface of the rotating shaft 27 are reversed. A scale 19 is installed on the measuring platform 2 near the position of the dovetail groove 20. A measuring needle 23 is installed on the side of the slider 24 near the scale 19. Measurement data is read through the measuring needle 23 and the scale 19. A reinforcing rib 26 is installed at the gap between the clamping plate 25 and the slider 24. The reinforcing rib 26 provides stable support for the clamping plate 25.

[0027] The working principle of a high-precision seamless steel pipe inner and outer diameter measuring device based on Embodiment 1 is as follows: After the device is installed, the seamless steel pipe is placed on top of the bearing 6. Then, the drive motor 21 is started, which drives the rotating shaft 27 to rotate. The rotating shaft 27 drives the slider 24 to move, and the slider 24 drives the clamping plate 25 to move. The clamping plate 25 is moved to the outer surface of the seamless steel pipe, and the outer surface of the seamless steel pipe is measured by the measuring needle 23. After the measurement is completed, the inner diameter of the seamless steel pipe is measured by the measuring plate A14 and the measuring plate B15. After the measurement is completed, the clamping plate 25 is removed by the drive motor 21, and the electric telescopic device 4 is started. The electric telescopic device 4 drives the support base 5 to move upward, and the conveyor belt 7 is moved to the bottom of the seamless steel pipe. The seamless steel pipe is then rotated by the conveyor belt 7. After the measurement is completed, the inner diameter of the seamless steel pipe can be measured again by the measuring plate A14 and the measuring plate B15, and the outer diameter of the seamless steel pipe can be measured again by the clamping plate 25 and the drive motor 21. Thus, the working process of this device is completed.

[0028] Example 2

[0029] like Figure 1 and Figure 2As shown, the present invention proposes a high-precision seamless steel pipe inner and outer diameter measuring device. Compared with Embodiment 1, this embodiment further includes: a fixed frame 9 installed on the top of the measuring platform 2 away from the dovetail groove 20; a lifting motor 18 installed on the top of the fixed frame 9; a lead screw 10 installed on the output shaft of the lifting motor 18; a measuring plate A14 sleeved on the outer surface of the lead screw 10; a measuring motor 11 installed on one side of the bottom of the measuring plate A14; a measuring shaft 17 installed on the output shaft of the measuring motor 11; a measuring plate B15 sleeved on the outer surface of the measuring shaft 17; steel balls 16 installed on opposite sides near the ends of the measuring plates A14 and B15; the measuring shaft 17 and the measuring plate B15 are connected by a threaded connection; a limit rod 13 is installed at the bottom of the measuring plate B15, and the limit rod 13 penetrates the interior of the measuring plate A14; a control box 1 is installed on one side of the measuring platform 2 near the front surface; an infrared distance sensor 12 is installed on the top of the measuring plate A14 near the lead screw 10; and the height of the measuring plate A14 is measured by the infrared distance sensor 12.

[0030] In this embodiment, when it is necessary to measure the inner diameter of the seamless steel pipe, the seamless steel pipe is placed on the outer surface of the measuring plate A14 and the measuring plate B15. Then, the lifting motor 18 is started, which drives the lead screw 10 to rotate. The lead screw 10 drives the measuring plate A14 to move, pressing the steel ball 16 at the bottom of the measuring plate A14 tightly against the inner wall of the seamless steel pipe. Then, the measuring motor 11 is started, which drives the measuring shaft 17 to rotate. The measuring shaft 17 drives the measuring plate B15 to move upward, pressing the steel ball 16 at the top of the measuring plate B15 tightly against the top of the seamless steel pipe. Then, the position of the measuring plate B15 is measured by the infrared distance sensor 12, and the measurement data is transmitted to the control box 1. The inner diameter data of the seamless steel pipe is measured by the control box 1.

[0031] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A high-precision seamless steel pipe inner and outer diameter measuring device, comprising a control box (1) and a measuring platform (2), characterized in that: The measuring platform (2) has support seats (5) installed on both sides near the middle of the top. The support seats (5) on both sides are equipped with bearings (6) via positioning shafts (8) near the top. The measuring platform (2) has electric telescopic devices (4) installed on the front and rear surfaces of the bottom middle. The output shaft of the electric telescopic device (4) is equipped with a lifting seat (3). The lifting seat (3) is equipped with a conveyor belt (7) on the top. The measuring platform (2) has a slider (24) installed on the side near the support seats (5) via a dovetail groove (20). The slider (24) is equipped with a clamping plate (25) on the top.

2. The high-precision seamless steel pipe inner and outer diameter measuring device according to claim 1, characterized in that: A motor frame (22) is installed on the front surface of the measuring platform (2) at the position of the dovetail groove (20). A drive motor (21) is installed on the front surface of the motor frame (22), and a rotating shaft (27) is installed on the output shaft of the drive motor (21).

3. The high-precision seamless steel pipe inner and outer diameter measuring device according to claim 2, characterized in that: The rotating shaft (27) is sleeved inside the sliders (24) on both sides. The rotating shaft (27) and the sliders (24) are connected by a threaded connection. The threads on the outer surface of the rotating shaft (27) are reversed.

4. The high-precision seamless steel pipe inner and outer diameter measuring device according to claim 3, characterized in that: A scale (19) is installed on the measuring platform (2) near the dovetail groove (20), a measuring needle (23) is installed on the slider (24) near the scale (19), and a reinforcing rib (26) is installed at the gap between the clamp (25) and the slider (24).

5. The high-precision seamless steel pipe inner and outer diameter measuring device according to claim 1, characterized in that: A fixed frame (9) is installed on the top of the measuring platform (2) away from the middle of the dovetail groove (20). A lifting motor (18) is installed on the top of the fixed frame (9). A lead screw (10) is installed on the output shaft of the lifting motor (18). A measuring plate A (14) is sleeved on the outer surface of the lead screw (10).

6. The high-precision seamless steel pipe inner and outer diameter measuring device according to claim 5, characterized in that: A measuring motor (11) is installed on one side of the bottom of the measuring plate A (14). A measuring shaft (17) is installed on the output shaft of the measuring motor (11). A measuring plate B (15) is sleeved on the outer surface of the measuring shaft (17). Steel balls (16) are installed on opposite sides of the measuring plate A (14) and the measuring plate B (15) near their ends.

7. A high-precision seamless steel pipe inner and outer diameter measuring device according to claim 6, characterized in that: The measuring shaft (17) is connected to the measuring plate B (15) by a threaded connection. A limiting rod (13) is installed at the bottom of the measuring plate B (15), and the limiting rod (13) passes through the inside of the measuring plate A (14).

8. The high-precision seamless steel pipe inner and outer diameter measuring device according to claim 5, characterized in that: A control box (1) is installed on one side of the measuring platform (2) near the front surface, and an infrared ranging sensor (12) is installed on the top of the measuring plate A (14) near the lead screw (10).

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