High-precision speed measuring device for saw cutting of welded pipe

Abstract

The invention discloses a welded pipe saw cutting high-precision speed measuring device, and belongs to the technical field of welded pipe production, the welded pipe saw cutting high-precision speed measuring device comprises an operation box, the upper surface of the operation box is movably connected with a clamping plate through an electric slide rail, the upper surface of the operation box is in bolted connection with a working box, and the surface of the working box is provided with a high-definition shooting machine; and a connecting shaft is rotationally arranged in the vertical plate, a negative pressure adsorption plate is fixedly connected to the surface of the connecting shaft, and a conveying pipe is fixedly connected to the surface of the negative pressure adsorption plate. When the high-precision speed measuring device for welded pipe saw cutting works, a workpiece is clamped through a clamping plate, cutting of the workpiece is completed through a saw cutting assembly arranged on the lower surface of the working box, speed measurement is conducted through a high-definition shooting machine, in the process, a motor drives a negative pressure adsorption plate to swing, the working range of the negative pressure adsorption plate is expanded, and the speed measurement accuracy is improved. The smoke generated in the saw cutting process is treated, so that the high-definition shooting machine is not blocked by the smoke, the speed can be better measured, and the speed measuring precision is improved.

Description

Technical Field

[0001] This invention relates to the field of welded pipe production technology, specifically to a high-precision speed measuring device for welded pipe sawing. Background Technology

[0002] Welded pipe is a type of pipe made by bending and welding steel plates or strips. It possesses high sealing performance, corrosion resistance, and high pressure resistance, and is widely used in fluid transportation, structural support, and machinery manufacturing. During the processing of welded pipes, they need to be sawed to adapt them to more application scenarios. During sawing, it is necessary to measure the speed of the welded pipe's movement and the rotation speed of the saw blade. Testing the saw blade speed during welded pipe sawing is a crucial step in ensuring cutting quality, equipment safety, and production efficiency. This necessitates the use of high-precision speed measuring devices for welded pipe sawing, such as the Chinese patent application No. 202120462809.1, filed on March 3, 2021, entitled "A High-Frequency Welded Pipe Flying Saw Speed ​​Measuring Device." It includes a base, a support column fixedly connected to the top of the base, a guide rod fixedly connected to one end of the support column, a spring base plate fixedly connected to the outer wall of the support column, a spring fixedly connected to the top of the spring base plate, a spring top plate fixedly connected to one end of the spring, a speed measuring roller bracket fixedly connected to the top of the spring top plate, a lower speed measuring roller provided on the front of the speed measuring roller bracket, a top cover fixedly connected to one end of the guide rod, and a pneumatic cylinder fixedly connected to the bottom of the top cover. During use, it achieves good speed measurement results, solving the problem of poor speed measurement performance in general high-frequency welded pipe flying saw speed measuring devices. The device's height can be adjusted using a pneumatic cylinder, thereby improving the accuracy of the speed measurement and providing convenience for operators.

[0003] In actual operation, when welded pipes are sawed, a large amount of dust is scattered. This scattered dust can affect the imaging component's ability to capture the saw blade, thus affecting the accuracy of the speed measurement. The device in the aforementioned application does not have a structure for quickly handling dust during use. As a result, the scattered dust can obscure the imaging component, leading to inaccurate imaging and ultimately analysis errors. This, in turn, affects the sawing accuracy and causes unnecessary trouble for welded pipe sawing. Therefore, we propose a high-precision speed measurement device for welded pipe sawing to solve the aforementioned problems. Summary of the Invention

[0004] The purpose of this invention is to provide a high-precision speed measuring device for welded pipe sawing, in order to solve the problem mentioned in the background art that, during use, it does not have a structure for quickly handling dust, and when dust is scattered, it will block the imaging component, resulting in inaccurate imaging of the imaging component, which will ultimately lead to analysis errors and affect the sawing accuracy, thus causing unnecessary trouble for welded pipe sawing.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A high-precision speed measuring device for welded pipe sawing includes an operating box. A clamping plate is movably connected to the upper surface of the operating box via an electric slide rail. A working box is bolted to the upper surface of the operating box, and a high-definition camera is mounted on the surface of the working box. A vertical plate is bolted to the upper surface of the operating box. A connecting shaft is rotatably mounted inside the vertical plate, and a negative pressure adsorption plate is fixedly connected to the surface of the connecting shaft. A conveying pipe is fixedly connected to the surface of the negative pressure adsorption plate. A long pin is rotatably mounted on the surface of the negative pressure adsorption plate, and a shielding cloth is connected to the negative pressure adsorption plate via a telescopic assembly. A movable block is inserted into the surface of the negative pressure adsorption plate, and a connecting rod is connected to the movable block via a reciprocating assembly. A cleaning pipe is fixedly connected to the end of the connecting rod. A receiving plate is connected to the inside of the operating box via a swing assembly, and an inner connecting plate is fixedly connected to the inner wall of the operating box. A long rod is slidably mounted on the lower surface of the inner connecting plate.

[0007] Preferably, the vertical plates are symmetrically distributed on both sides of the control box, and a motor is bolted to the surface of the left vertical plate, and the output end of the motor is fixedly connected to the connecting shaft.

[0008] Preferably, the conveying pipe is connected to the input end of the external impurity collection device through an external hose, a pull rope is fixedly connected to the upper surface of the operation box, and the end of the pull rope is fixedly connected to the lower surface of the shielding cloth, and the shielding cloth is wrapped and fixedly connected to the surface of the long pin.

[0009] Preferably, the telescopic component includes an external block fixedly connected to the surface of the negative pressure adsorption plate, and the long pin is rotatably disposed inside the external block, and the long pin passes through the interior of the external block.

[0010] Preferably, a spiral spring is fixedly connected to the inner wall of the outer block, and the other side of the spiral spring is fixedly connected to the surface of the long pin.

[0011] Preferably, the reciprocating assembly includes a limiting rod fixedly connected to the inner wall of the movable block, and the surface of the limiting rod is sleeved with the connecting rod, and the connecting rod has a bent structure and the surface of the connecting rod is inclined.

[0012] Preferably, the cleaning tubes are evenly distributed inside the negative pressure adsorption plate, and a guide rod is fixedly connected to the upper surface of the operation box. The guide rod corresponds one-to-one with the connecting rod, and the rear view of the guide rod is an inverted "L" structure. The surface of the guide rod is in contact with the inclined surface of the connecting rod.

[0013] Preferably, a spring shock absorber is fixedly connected to the surface of the connecting rod, and the other side of the spring shock absorber is fixedly connected to the inner wall of the movable block. An insertion rod is fixedly connected to the surface of the movable block, and the surface of the negative pressure adsorption plate is provided with insertion holes at equal intervals corresponding to the insertion rods.

[0014] Preferably, the swing assembly includes an inner shaft fixedly connected to the inner wall of the operating box, and the surface of the operating box is provided with an inclined feeding groove. The receiving plate is sleeved and connected to the surface of the inner shaft. A push rod is slidably arranged inside the operating box, and the upper surface of the push rod is in contact with the lower surface of the negative pressure adsorption plate, and the lower surface of the push rod is in contact with the upper surface of the receiving plate. A torsion spring is fixedly connected to the surface of the inner shaft, and the other side of the torsion spring is fixedly connected to the inner wall of the receiving plate. The end of the receiving plate is located on the outside of the operating box.

[0015] Preferably, the inner wall of the operating box is convex, and an operating plate is rotatably mounted on the convex position of the operating box. A connecting plate is movably mounted on the upper surface of the receiving plate, and the end of the connecting plate is rotatably mounted inside the operating plate. A working plate is slidably mounted inside the inner connecting plate, and the long rods are evenly spaced on the lower surface of the working plate. The upper surface of the working plate is in contact with the lower surface of the operating plate, and the working plate and the inner connecting plate are connected by a return spring.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] Employing a novel structural design, the multi-angle oscillating negative pressure adsorption plate can absorb dust and fumes over a wide area. Simultaneously, as the negative pressure adsorption plate oscillates upwards, the upper part of the adsorption port is blocked. At this time, the suction force increases while maintaining the same power, allowing for the processing of dust from a distance. This provides the high-definition camera with a better field of view, preventing it from being obscured by dust, thereby improving the shooting accuracy of the high-definition camera and ultimately enhancing the sawing precision of the welded pipe. The specific details are as follows:

[0018] 1. This high-precision speed measuring device for welded pipe sawing uses a clamping plate to hold and fix the workpiece during use. The sawing component set on the lower surface of the work box completes the cutting of the workpiece, and the speed is measured by a high-definition camera. During this process, the motor drives the negative pressure adsorption plate to swing, expanding the working range of the negative pressure adsorption plate and treating the fumes generated during sawing. This prevents the high-definition camera from being blocked by fumes or dust, allowing for better speed measurement and thus improving the accuracy of the speed measurement.

[0019] Furthermore, when the negative pressure adsorption plate swings, the shielding cloth is stretched by the pull rope. At this time, the shielding cloth rotates and opens around the long pin. The shielding cloth can block the upper end of the adsorption port, so that the suction of the negative pressure adsorption plate increases without changing the power. This allows it to treat dust at a distance, thus giving the high-definition camera a better field of view.

[0020] 2. This high-precision speed measuring device for welded pipe sawing operates as follows: During the swinging of the negative pressure adsorption plate, the guide rod remains stationary, while the connecting rod moves relative to the guide rod. The connecting rod is intermittently pushed by the guide rod. Under the action of the thrust, the limit rod, and the spring damper, the connecting rod reciprocates linearly within the moving block. This causes the cleaning tube to move synchronously, meaning the cleaning tube reciprocates relative to the negative pressure adsorption plate. This allows the cleaning tube to clean the inner wall of the negative pressure adsorption plate, preventing impurities from remaining and thus optimizing the cleaning effect. This results in better imaging by the high-definition camera and ultimately improves the precision of welded pipe sawing.

[0021] Furthermore, the adsorption ports on the surfaces of the cleaning tube and the negative pressure adsorption tube correspond one-to-one, ensuring work efficiency.

[0022] 3. The high-precision speed measuring device for welded pipe sawing, when the negative pressure adsorption plate is driven by the motor and is in a swinging state, will intermittently push the push rod downward. At this time, the push rod will intermittently push the receiving plate. Then, under the action of the push rod, the inner shaft and the torsion spring, the receiving plate is in a swinging state, that is, the receiving plate can discharge impurities more quickly, thus improving work efficiency.

[0023] Furthermore, the end of the receiving plate is located on the outside of the control box, which avoids impurities remaining on the control box and results in better cleaning.

[0024] 4. The high-precision speed measuring device for welded pipe sawing has a long rod that reciprocates in a straight line in the vertical direction during the swinging of the receiving plate. When the receiving plate swings upward, the long rod descends and strikes the receiving plate, causing it to vibrate and accelerating the unloading process. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the control box of the present invention;

[0026] Figure 2 This is a schematic diagram of the connection structure between the work box and the high-definition camera of the present invention;

[0027] Figure 3 This is a schematic diagram of the connection structure between the control box and the vertical plate of the present invention;

[0028] Figure 4 This is a schematic diagram of the connection structure between the connecting shaft and the negative pressure adsorption plate of the present invention;

[0029] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0030] Figure 6 This is a schematic diagram of the connection structure between the long pin and the torsion spring of the present invention;

[0031] Figure 7 This is a schematic diagram of the connection structure between the negative pressure adsorption plate and the cleaning tube of the present invention;

[0032] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B;

[0033] Figure 9 This is a schematic diagram of the negative pressure adsorption plate swinging state structure of the present invention;

[0034] Figure 10 This is a schematic diagram of the cross-sectional structure of the active block of the present invention;

[0035] Figure 11 For the present invention Figure 9 Enlarged structural diagram at point C;

[0036] Figure 12 This is a schematic diagram of the connection structure between the operating box and the inner shaft of the present invention;

[0037] Figure 13 This is a schematic diagram of the receiving plate of the present invention in a cut state;

[0038] Figure 14 This is a schematic diagram of the connection structure between the working plate and the long rod of the present invention;

[0039] Figure 15 This is a schematic diagram of the connection structure between the working plate and the reset spring of the present invention.

[0040] In the diagram: 1. Control box; 2. Clamping plate; 3. Working box; 4. Vertical plate; 5. Receiving plate; 6. Motor; 7. Connecting shaft; 8. Negative pressure adsorption plate; 9. Pull rope; 10. Long pin; 11. Shelter cloth; 12. Vortex spring; 13. Conveying pipe; 14. Movable block; 15. Guide rod; 16. Limiting rod; 17. Spring shock absorber; 18. Connecting rod; 19. Cleaning pipe; 20. Insertion rod; 21. Inner shaft; 22. Torsion spring; 23. Push rod; 24. Outer block; 25. Insertion hole; 26. Inner plate; 27. Connecting plate; 28. Control plate; 29. ​​Working plate; 30. Long rod; 31. Return spring. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figures 1-15 The present invention provides the following technical solution: a high-precision speed measuring device for welded pipe sawing.

[0043] Example 1: By using a negative pressure adsorption plate 8 that is in a swinging state, impurities such as flue gas can be processed from multiple angles, facilitating imaging and speed measurement by a high-definition camera, ultimately improving sawing accuracy. Figures 1-9 As shown, the device includes an operation box 1, with a clamping plate 2 movably connected to the upper surface of the operation box 1 via an electric slide rail, and a work box 3 bolted to the upper surface of the operation box 1, with a high-definition camera mounted on the surface of the work box 3; a vertical plate 4 bolted to the upper surface of the operation box 1; a connecting shaft 7 rotatably mounted inside the vertical plate 4, with a negative pressure adsorption plate 8 fixedly connected to the surface of the connecting shaft 7, and a conveying pipe 13 fixedly connected to the surface of the negative pressure adsorption plate 8; a long pin 10 rotatably mounted on the surface of the negative pressure adsorption plate 8, and a shielding cloth 11 connected to the negative pressure adsorption plate 8 via a telescopic assembly; the vertical plates 4 are symmetrically distributed on both sides of the operation box 1, with a motor 6 bolted to the surface of the left vertical plate 4, and a connecting shaft 7 fixedly connected to the output end of the motor 6.

[0044] The conveying pipe 13 is connected to the input end of the external impurity collection device through an external hose. A pull rope 9 is fixedly connected to the upper surface of the operation box 1, and the end of the pull rope 9 is fixedly connected to the lower surface of the shielding cloth 11. The shielding cloth 11 is wrapped and fixedly connected to the surface of the long pin 10. The telescopic component includes an external block 24 fixedly connected to the surface of the negative pressure adsorption plate 8. The long pin 10 is rotatably arranged inside the external block 24 and passes through the interior of the external block 24. A spiral spring 12 is fixedly connected to the inner wall of the external block 24, and the other side of the spiral spring 12 is fixedly connected to the surface of the long pin 10.

[0045] During use, the operating box 1 clamps and fixes the workpiece using the clamping plate 2. The sawing component on the lower surface of the working box 3 cuts the workpiece, while a high-definition camera measures the speed. During this process, the motor 6 on the surface of the vertical plate 4 operates, driving the negative pressure adsorption plate 8 to swing (0°~15°), expanding its working range and treating the fumes generated during sawing. This prevents the high-definition camera from being obstructed by fumes or dust, thus improving speed measurement accuracy. When the negative pressure adsorption plate 8 swings upwards, the shielding cloth 11 is stretched by the pull rope 9. The shielding cloth 11 rotates around the long pin 10 to open (the long pin 10 rotates synchronously, at which time the spiral spring 12 is stretched). The shielding cloth 11 can block the upper end of the suction port, so that the suction of the negative pressure suction plate 8 increases while the power remains unchanged, thereby processing dust at a distance and giving the high-definition camera a better shooting field of view. As the negative pressure suction plate 8 rotates back to a horizontal state, the shielding cloth 11 will gradually lose the tension of the pull rope 9. At this time, the long pin 10 rotates back under the action of the spiral spring 12, that is, the shielding cloth 11 is rolled up by the long pin 10 again, so that the suction port is not blocked, making it convenient for the next use of the negative pressure suction plate 8.

[0046] Example 2: Unlike Example 1, the reciprocating assembly allows the cleaning tube 19 to move inside the negative pressure adsorption plate 8, thus cleaning the inner wall of the adsorption port. Figures 9-11 As shown, a movable block 14 is inserted and connected to the surface of the negative pressure adsorption plate 8, and the movable block 14 is connected to a connecting rod 18 through a reciprocating assembly, and a cleaning tube 19 is fixedly connected to the end of the connecting rod 18; the reciprocating assembly includes a limiting rod 16 fixedly connected to the inner wall of the movable block 14, and the connecting rod 18 is sleeved and connected to the surface of the limiting rod 16, and the connecting rod 18 has a bent structure and the surface of the connecting rod 18 is inclined.

[0047] Cleaning tubes 19 are evenly distributed inside the negative pressure adsorption plate 8. Guide rods 15 are fixedly connected to the upper surface of the operation box 1, and the guide rods 15 correspond one-to-one with the connecting rods 18. The rear view of the guide rods 15 is an inverted "L" structure, and the surface of the guide rods 15 is in contact with the inclined surface of the connecting rods 18. Spring shock absorbers 17 are fixedly connected to the surface of the connecting rods 18, and the other side of the spring shock absorbers 17 is fixedly connected to the inner wall of the movable block 14. Insertion rods 20 are fixedly connected to the surface of the movable block 14. Insertion holes 25, which correspond one-to-one with the insertion rods 20, are evenly spaced on the surface of the negative pressure adsorption plate 8.

[0048] During the upward swing of the negative pressure adsorption plate 8, the guide rod 15 remains stationary, while the connecting rod 18 moves relative to the guide rod 15. This means the connecting rod 18 is intermittently pushed by the guide rod 15. When the connecting rod 18 is pushed, it drives the cleaning tube 19 into the interior of the negative pressure adsorption plate 8. Simultaneously, the connecting rod 18 slides on the surface of the limiting rod 16, and the spring damper 17 is compressed. During the downward swing of the negative pressure adsorption plate 8, the connecting rod 18 loses the pressure from the guide rod 15. Under the action of the limiting rod 16 and the spring damper 17, the connecting rod 18 moves back. Under the action of the thrust, the limiting rod 16 and the spring damper 17, the connecting rod 18 makes a reciprocating linear motion inside the movable block 14. Then the connecting rod 18 drives the cleaning tube 19 to move synchronously. That is, the cleaning tube 19 is in a reciprocating motion state relative to the negative pressure adsorption plate 8. Thus, the cleaning tube 19 can clean the inner wall of the negative pressure adsorption plate 8, so that no impurities remain. This optimizes the cleaning effect, makes the imaging effect of the high-definition camera better, and ultimately optimizes the precision of the welded pipe sawing.

[0049] After prolonged use, the movable block 14 can be pulled out from the inside of the socket 25 to clean the cleaning tube 19. Then, the insertion rod 20 on the surface of the movable block 14 can be inserted into the socket 25. This ensures the working effect of the cleaning tube 19.

[0050] Example 3: Unlike Example 2, the oscillating component allows the receiving plate 5 to be in an oscillating unloading state, such as... Figure 1 , Figure 12 and Figure 13 As shown, the inside of the operating box 1 is connected to a receiving plate 5 via a swing assembly. The swing assembly includes an inner shaft 21 fixedly connected to the inner wall of the operating box 1. An inclined feeding groove is provided on the surface of the operating box 1. The receiving plate 5 is sleeved and connected to the surface of the inner shaft 21. A push rod 23 is slidably arranged inside the operating box 1. The upper surface of the push rod 23 is in contact with the lower surface of the negative pressure adsorption plate 8, and the lower surface of the push rod 23 is in contact with the upper surface of the receiving plate 5. A torsion spring 22 is fixedly connected to the surface of the inner shaft 21. The other side of the torsion spring 22 is fixedly connected to the inner wall of the receiving plate 5. The end of the receiving plate 5 is located on the outside of the operating box 1.

[0051] When the negative pressure adsorption plate 8 is driven by the motor 6 and is in a swinging state, it will intermittently push the push rod 23 downward. At this time, the push rod 23 will intermittently push the receiving plate 5. When the receiving plate 5 is pushed, the receiving plate 5 swings around the inner shaft 21 under the action of the push force. At this time, the torsion spring 22 is stretched. When the receiving plate 5 is not pushed, the receiving plate 5 rotates under the action of the torsion spring 22. The above process is repeated. Under the action of the push force of the push rod 23, the inner shaft 21 and the torsion spring 22, the receiving plate 5 is in a swinging state. That is, the receiving plate 5 can discharge impurities more quickly, improving work efficiency. At the same time, the end of the receiving plate 5 is located outside the operating box 1, thus avoiding the situation of impurities remaining on the operating box 1, and the cleaning effect is better.

[0052] Example 4: Unlike Example 3, the long rod 30 serves to assist in material feeding, such as... Figure 1 , Figure 14 and Figure 15 As shown, an inner connecting plate 26 is fixedly connected to the inner wall of the operating box 1, and a long rod 30 is slidably arranged on the lower surface of the inner connecting plate 26. The inner wall of the operating box 1 is convex, and an operating plate 28 is rotatably arranged at the convex position of the operating box 1. A connecting plate 27 is movably arranged on the upper surface of the receiving plate 5, and the end of the connecting plate 27 is rotatably arranged inside the operating plate 28. A working plate 29 is slidably arranged inside the inner connecting plate 26, and long rods 30 are evenly spaced on the lower surface of the working plate 29. The upper surface of the working plate 29 is in contact with the lower surface of the operating plate 28. The working plate 29 and the inner connecting plate 26 are connected by a return spring 31.

[0053] When the receiving plate 5 swings upward, it drives the operating plate 28 to rotate via the connecting plate 27. At this time, the operating plate 28 presses down on the working plate 29, causing the working plate 29 and the long rod 30 to descend. The return spring 31 is then compressed. When the receiving plate 5 swings downward, the working plate 29 and the long rod 30 lose pressure. The working plate 29 and the long rod 30 then rise under the action of the return spring 31. The working plate 29 then pushes the operating plate 28 to rotate, facilitating the next use of the operating plate 28. The above process is repeated. The long rod 30 makes reciprocating linear motion in the vertical direction. When the receiving plate 5 swings upward, the long rod 30 descends. At this time, the long rod 30 strikes the receiving plate 5, causing the receiving plate 5 to vibrate and accelerating the unloading process.

[0054] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0055] 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. A high-precision speed measuring device for welded pipe sawing, comprising an operation box (1), wherein a clamping plate (2) is movably connected to the upper surface of the operation box (1) via an electric slide rail, and a work box (3) is bolted to the upper surface of the operation box (1), and a high-definition camera is provided on the surface of the work box (3), characterized in that: The upper surface of the operation box (1) is bolted with a vertical plate (4); the interior of the vertical plate (4) is rotatably provided with a connecting shaft (7), and a negative pressure adsorption plate (8) is fixedly connected to the surface of the connecting shaft (7), and a conveying pipe (13) is fixedly connected to the surface of the negative pressure adsorption plate (8). The surface of the negative pressure adsorption plate (8) is rotatably provided with a long pin (10), and the negative pressure adsorption plate (8) is connected to a shielding cloth (11) through a telescopic component. The surface of the negative pressure adsorption plate (8) is connected to a movable block (14), and the movable block (14) is connected to a connecting rod (18) through a reciprocating assembly, and a cleaning tube (19) is fixedly connected to the end of the connecting rod (18). The inside of the operation box (1) is connected to a receiving plate (5) via a swing assembly, and an inner connecting plate (26) is fixedly connected to the inner wall of the operation box (1), and a long rod (30) is slidably provided on the lower surface of the inner connecting plate (26).

2. The high-precision speed measuring device for welded pipe sawing according to claim 1, characterized in that: The vertical plates (4) are symmetrically distributed on both sides of the operation box (1), and the surface of the left vertical plate (4) is bolted with a motor (6), and the output end of the motor (6) is fixedly connected to the connecting shaft (7).

3. The high-precision speed measuring device for welded pipe sawing according to claim 1, characterized in that: The conveying pipe (13) is connected to the input end of the external impurity collection device through an external hose. A pull rope (9) is fixedly connected to the upper surface of the operation box (1), and the end of the pull rope (9) is fixedly connected to the lower surface of the shielding cloth (11). The shielding cloth (11) is wrapped and fixedly connected to the surface of the long pin (10).

4. The high-precision speed measuring device for welded pipe sawing according to claim 1, characterized in that: The telescopic assembly includes an external block (24) fixedly connected to the surface of the negative pressure adsorption plate (8), and the long pin (10) is rotatably disposed inside the external block (24), and the long pin (10) passes through the interior of the external block (24).

5. The high-precision speed measuring device for welded pipe sawing according to claim 4, characterized in that: A spiral spring (12) is fixedly connected to the inner wall of the outer block (24), and the other side of the spiral spring (12) is fixedly connected to the surface of the long pin (10).

6. The high-precision speed measuring device for welded pipe sawing according to claim 1, characterized in that: The reciprocating assembly includes a limiting rod (16) fixedly connected to the inner wall of the movable block (14), and the surface of the limiting rod (16) is sleeved with the connecting rod (18), and the connecting rod (18) is a bent structure, and the surface of the connecting rod (18) is inclined.

7. The high-precision speed measuring device for welded pipe sawing according to claim 6, characterized in that: The cleaning tubes (19) are evenly distributed inside the negative pressure adsorption plate (8). The upper surface of the operation box (1) is fixedly connected with guide rods (15), and the guide rods (15) correspond one-to-one with the connecting rods (18). The rear view of the guide rods (15) is an inverted "L" structure, and the surface of the guide rods (15) is in contact with the inclined surface of the connecting rods (18).

8. The high-precision speed measuring device for welded pipe sawing according to claim 6, characterized in that: A spring damper (17) is fixedly connected to the surface of the connecting rod (18), and the other side of the spring damper (17) is fixedly connected to the inner wall of the movable block (14). An insertion rod (20) is fixedly connected to the surface of the movable block (14), and the surface of the negative pressure adsorption plate (8) is provided with insertion holes (25) that correspond one-to-one with the insertion rod (20).

9. The high-precision speed measuring device for welded pipe sawing according to claim 1, characterized in that: The swing assembly includes an inner shaft (21) fixedly connected to the inner wall of the operating box (1), and the surface of the operating box (1) is provided with an inclined feeding groove. The inner shaft (21) is sleeved with the receiving plate (5). The operating box (1) is slidably provided with a push rod (23). The upper surface of the push rod (23) is in contact with the lower surface of the negative pressure adsorption plate (8), and the lower surface of the push rod (23) is in contact with the upper surface of the receiving plate (5). The inner shaft (21) is fixedly connected with a torsion spring (22), and the other side of the torsion spring (22) is fixedly connected to the inner wall of the receiving plate (5). The end of the receiving plate (5) is located on the outside of the operating box (1).

10. The high-precision speed measuring device for welded pipe sawing according to claim 1, characterized in that: The inner wall of the operating box (1) is raised, and an operating plate (28) is rotatably provided at the raised position of the operating box (1). A connecting plate (27) is movably provided on the upper surface of the receiving plate (5), and the end of the connecting plate (27) is rotatably provided inside the operating plate (28). A working plate (29) is slidably provided inside the inner connecting plate (26), and the long rods (30) are provided at equal intervals on the lower surface of the working plate (29). The upper surface of the working plate (29) is in contact with the lower surface of the operating plate (28). The working plate (29) and the inner connecting plate (26) are connected by a return spring (31).

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