Geometric dimension laser measuring device for orifice plate flowmeter

Abstract

The invention discloses a laser measuring device for the geometric dimension of an orifice plate flowmeter, and belongs to the technical field of orifice plate flowmeter production. The device comprises a workbench, a clamping assembly is installed on the upper side of the workbench, a measuring assembly is installed on the upper side of the workbench, the measuring assembly comprises two laser measuring devices, a sliding rail is fixedly connected to the upper side of the workbench, a moving plate is slidably connected into the sliding rail, and a rotating circular plate is rotatably connected to the side wall of the moving plate through a rotating rod. And the side wall of the rotating circular plate is fixedly connected with a connecting block. The fixing effect of the orifice plate flowmeter is achieved through the clamping assembly, then the position of the laser measurer is adjusted, then the measurement of the diameters of the inner side and the outer side of the orifice plate flowmeter is completed, operation is easy, meanwhile, the laser measurer can rotate back and forth during detection, the single linear distance of the orifice plate flowmeter is not detected, and the detection efficiency is improved. The detection range is wider, and the detection result is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of orifice flowmeter production, and in particular to a laser measuring device for the geometric dimensions of an orifice flowmeter. Background Art

[0002] An orifice flowmeter is a differential pressure flowmeter, which is a high-range differential pressure flow device composed of a standard orifice plate and a multi-parameter differential pressure transmitter (or a differential pressure transmitter, a temperature transmitter, and a pressure transmitter), and can measure the flow rates of gases, vapors, liquids, etc. During the production process of an orifice flowmeter, since the geometric dimension coefficient of the orifice plate can affect the heat conduction efficiency of the system, and the geometric dimension coefficient of the support affects the stability of the system. In addition, the number of holes in the orifice plate also affects the flow characteristics, and the geometric dimension coefficient of the support mounting part affects the installation process, thus affecting the overall performance of the system. Therefore, it is necessary to measure the geometric dimensions of the orifice plate and the support therein. Among them, laser measurement is one of the more widely used measurement methods.

[0003] When performing geometric dimension measurement operations on an orifice flowmeter, place the orifice flowmeter on the workbench, start and move the laser emitter back and forth to perform corresponding measurement operations. The overall operation is simple. However, during actual measurement operations, the emission angle of the laser emitter is in a fixed state, and it is necessary to adjust the position of the orifice flowmeter to complete the measurement of the geometric dimensions of the orifice flowmeter. Moreover, when performing measurements, the laser emitter is in a fixed state, resulting in a general detection range of the laser emitter. During detection, it is necessary to perform multiple repeated detections, which is time-consuming and laborious. In addition, when performing detections, it is necessary to keep the measurement surface of the orifice flowmeter clean, which requires manual wiping multiple times, and the workload is large. Therefore, a laser measuring device for the geometric dimensions of an orifice flowmeter is provided. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies existing in the prior art and to propose a laser measuring device for the geometric dimensions of an orifice flowmeter.

[0005] The present invention adopts the following technical solutions: A laser measurement device for the geometric dimensions of an orifice flowmeter, comprising a workbench, on the upper side of which a clamping assembly is installed, and a measuring assembly is installed on the upper side of the workbench. The measuring assembly includes two laser measuring devices. A slide rail is fixedly connected to the upper side of the workbench, and a moving plate is slidably connected in the slide rail. The side wall of the moving plate is rotatably connected to a rotating circular plate through a rotating rod. A connecting block is fixedly connected to the side wall of the rotating circular plate. A bidirectional screw rod is rotatably penetrated through the side wall of the connecting block. Threaded plates are threadedly connected to both outer sides of the bidirectional screw rod. Two right-angled rods are symmetrically and fixedly connected to the side wall of the connecting block. The two right-angled rods are slidably connected to the threaded plates. The end of the threaded plate is rotatably connected to a rotating plate. The laser measuring device is fixedly connected to the rotating plate. A rotating assembly for controlling the rotation of the threaded plate is installed on the upper side of the workbench.

[0006] Preferably, the rotating assembly includes two clamping plates fixedly installed on the upper side of the workbench. Wave-shaped grooves are opened on the side walls of the two clamping plates. A moving rod is slidably connected to the side wall of the moving plate. A connecting rod is fixedly connected to the lower side of the moving rod. Slide rods are fixedly connected to both sides of the connecting rod. One end of the slide rod extends into the wave-shaped groove and is slidably connected to the wave-shaped groove. A control plate is fixedly connected to the upper side of the moving rod. A control rod is fixedly connected to the side wall of the rotating circular plate. A torsion spring is fixedly connected between the rotating circular plate and the moving plate.

[0007] Preferably, a friction cleaning assembly is installed on the outside of the rotating plate. The friction cleaning assembly includes two sliding plates slidably penetrating through the rotating plate. A cleaning plate is slidably connected to the outside of the two sliding plates. A plurality of first springs are fixedly connected together between the cleaning plate and the sliding plates. A connecting plate is also fixedly connected together between the two sliding plates. A plurality of second springs are fixedly connected together between the connecting plate and the rotating plate. A plurality of round rods are fixedly connected to the lower side of the connecting plate. A moving frame is slidably connected to the outside of the threaded plate. Two clamping rods are symmetrically and fixedly connected to the side wall of the moving frame. A plurality of triangular plates are also fixedly connected together between the two clamping rods. A positioning rod is fixedly connected to the upper side of the moving plate.

[0008] Preferably, a knocking assembly is installed on the outside of the rotating plate. The knocking assembly includes through grooves opened on the side walls of the two sliding plates. Two fixed frames are fixedly connected to the outside of the rotating plate. An inclined plate is slidably connected to the fixed frames and the through grooves together. A knocking rod is fixedly connected to the side wall of the inclined plate through a fixed block. A knocking cylinder is slidably connected to the outside of the knocking rod. A third spring is fixedly connected between the knocking cylinder and the knocking rod.

[0009] Preferably, the clamping assembly includes a hydraulic rod fixedly installed on the upper side of the workbench. The output end of the hydraulic rod is fixedly connected to a frame. A plurality of clamps are slidably connected to the outside of the frame. A threaded rod is threadedly connected to the lower side of each clamp.

[0010] Preferably, an anti-slip rubber pad is fixedly connected to the outer side of each of the clamps.

[0011] Preferably, two mounting holes are symmetrically formed in the upper side of the rotating plate, and a bolt is threadedly connected to the side wall of the threaded plate, and one end of the bolt extends into the mounting hole.

[0012] The beneficial effects of the present invention are as follows: 1. First, the fixing effect on the orifice plate flowmeter is completed through the clamping assembly, and then the position of the laser measuring device is adjusted, so as to complete the measurement of the inner and outer diameters of the orifice plate flowmeter. While the operation is simple, during the detection, the laser measuring device will rotate back and forth, rather than detecting the single straight-line distance of the orifice plate flowmeter, the detection range is wider, and the detection result is more accurate; 2. Secondly, during the detection, the cleaning plate will form a friction cleaning effect on the orifice plate flowmeter, maintaining the cleanliness of the measurement surface of the orifice plate flowmeter, and thus maintaining the accuracy of the measurement result. At the same time, under the limiting action of the sliding plate and the cleaning plate, the laser measuring device is located between the sliding plate and the cleaning plate, and it can also reduce the adverse effects of the external environment on the laser, killing two birds with one stone; 3. Finally, when using the laser measuring device for detection, the detection effect on the surface of the orifice plate flowmeter can be completed according to the laser intensity received by the laser receiver. Through the knocking of the knocking cylinder, and if there are defects in the orifice plate flowmeter, through the knocking of the knocking cylinder, the defects can be enlarged, and thus the detection effect of the laser receiver can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of a laser measuring device for the geometric dimensions of an orifice plate flowmeter proposed by the present invention; Figure 2 is a schematic structural diagram of the clamping assembly in a laser measuring device for the geometric dimensions of an orifice plate flowmeter proposed by the present invention; Figure 3 is a schematic structural diagram of the measuring assembly in a laser measuring device for the geometric dimensions of an orifice plate flowmeter proposed by the present invention; Figure 4 is a schematic connection diagram of the moving plate and the threaded plate in a laser measuring device for the geometric dimensions of an orifice plate flowmeter proposed by the present invention; Figure 5 is a schematic top view connection diagram of the moving plate and the rotating circular plate in a laser measuring device for the geometric dimensions of an orifice plate flowmeter proposed by the present invention; Figure 6 is Figure 4 an enlarged structural view of part A in Figure 7 is a schematic connection diagram of the threaded plate and the rotating plate in a laser measuring device for the geometric dimensions of an orifice plate flowmeter proposed by the present invention; Figure 8 Schematic connection diagram of the rotating plate and the laser measuring device in a laser measuring device for geometric dimensions of an orifice flowmeter proposed by the present invention; Figure 9 Schematic connection diagram of the threaded plate and the moving frame in a laser measuring device for geometric dimensions of an orifice flowmeter proposed by the present invention; Figure 10 Schematic connection diagram of the sliding plate and the connecting plate in a laser measuring device for geometric dimensions of an orifice flowmeter proposed by the present invention; Figure 11 Schematic connection diagram of the knocking assembly in a laser measuring device for geometric dimensions of an orifice flowmeter proposed by the present invention; Figure 12 Expanded connection diagram of the knocking rod and the knocking cylinder in a laser measuring device for geometric dimensions of an orifice flowmeter proposed by the present invention.

[0014] In the figure: 1 workbench, 2 fixture, 3 laser measuring device, 4 hydraulic rod, 5 frame, 6 rotating circular plate, 7 torsion spring, 8 right-angle rod, 9 bidirectional screw, 10 positioning rod, 11 threaded plate, 12 rotating plate, 13 moving plate, 14 moving rod, 15 control plate, 16 control rod, 17 slide rail, 18 clamping plate, 19 wave groove, 20 connecting block, 21 connecting rod, 22 sliding rod, 23 mounting hole, 24 bolt, 25 sliding plate, 26 cleaning plate, 27 moving frame, 28 clamping rod, 29 triangular plate, 30 first spring, 31 through groove, 32 connecting plate, 33 second spring, 34 round rod, 35 fixed frame, 36 inclined plate, 37 knocking rod, 38 third spring, 39 knocking cylinder. Detailed implementation manners

[0015] Refer to Figures 1 - 12 , a laser measuring device for geometric dimensions of an orifice flowmeter, including a workbench 1, a clamping assembly is installed on the upper side of the workbench 1, such as Figure 2 , the clamping assembly includes a hydraulic rod 4 fixedly installed on the upper side of the workbench 1, the output end of the hydraulic rod 4 is fixedly connected with a frame 5, a plurality of fixtures 2 are slidably connected to the outside of the frame 5, hydraulic jaws are installed on the outside of each fixture 2, threaded rods are threadedly connected to the lower side of each fixture 2, and anti-slip rubber pads are fixedly connected to the outside of each fixture 2 to improve the friction of the fixture 2, so as to better form the clamping and fixing of the orifice flowmeter to be measured. When geometric dimension measurement operation needs to be carried out on the orifice flowmeter, first move the fixture 2 along the frame 5 until the position of the fixture 2 meets the working requirements, then rotate the threaded rod until the threaded rod abuts against the frame 5, so as to complete the position adjustment and fixing operation of the fixture 2, and then place the orifice flowmeter on the fixture 2, and clamp and fix the orifice flowmeter through the hydraulic jaws, and finally complete the installation and fixing effect of the orifice flowmeter. The above are all prior arts; Such asFigure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , on the upper side of the workbench 1, a measuring component is installed. The measuring component includes two laser measuring devices 3. On the upper side of the workbench 1, a slide rail 17 is fixedly connected. A moving plate 13 is slidably connected in the slide rail 17. The side wall of the moving plate 13 is rotatably connected to a rotating circular plate 6 through a rotating rod. A connecting block 20 is fixedly connected to the side wall of the rotating circular plate 6. A bidirectional screw rod 9 rotatably penetrates through the side wall of the connecting block 20. Threaded plates 11 are threadedly connected to both outer sides of the bidirectional screw rod 9. Two right-angle rods 8 are symmetrically and fixedly connected to the side wall of the connecting block 20. The two right-angle rods 8 are slidably connected to the threaded plates 11. The end of the threaded plate 11 is rotatably connected to a rotating plate 12. The laser measuring device 3 is fixedly connected to the rotating plate 12. On the upper side of the workbench 1, a rotating component for controlling the rotation of the threaded plate 11 is installed. The rotating component includes two clamping plates 18 fixedly installed on the upper side of the workbench 1. Wave-shaped grooves 19 are opened on the side walls of the two clamping plates 18. A moving rod 14 is slidably connected to the side wall of the moving plate 13. A connecting rod 21 is fixedly connected to the lower side of the moving rod 14. Slide rods 22 are fixedly connected to both sides of the connecting rod 21. One end of the slide rod 22 extends into the wave-shaped groove 19 and is slidably connected to the wave-shaped groove 19. A control plate 15 is fixedly connected to the upper side of the moving rod 14. A control rod 16 is fixedly connected to the side wall of the rotating circular plate 6. A torsion spring 7 is fixedly connected between the rotating circular plate 6 and the moving plate 13. Two mounting holes 23 are symmetrically opened on the upper side of the rotating plate 12. A bolt 24 is threadedly connected to the side wall of the threaded plate 11. One end of the bolt 24 extends into the mounting hole 23; First, the laser measuring device 3 includes a laser emitter and a laser receiver. When laser measurement is required, the laser emitter emits laser towards the object to be detected. When the laser hits the object to be detected, due to the refraction of light, the laser changes its movement trajectory and then shoots towards the laser receiver. The laser receiver calculates and processes based on the time when the laser is received and the intensity of the laser, and then obtains the geometric dimensions of the object to be detected. The above are all prior arts. Secondly, before the laser measurement operation, when the outer diameter of the orifice flowmeter needs to be detected, first rotate the rotating plate 12. The rotating plate 12 drives the laser measuring device 3 to rotate until the laser measuring device 3 faces inwards (i.e., the positions of the laser measuring device 3 and the threaded plate 11 are as Figure 7As shown, then rotate the bidirectional screw 9. Since the thread directions on both sides of the bidirectional screw 9 are opposite, and since the threaded plate 11 and the right-angle rod 8 are in sliding connection, rotating the bidirectional screw 9 will drive the threaded plates 11 to move away from each other until the distance between the two laser measuring devices 3 is slightly greater than the outer diameter of the orifice flowmeter. Then, activate the hydraulic rod 4. The hydraulic rod 4 drives the orifice flowmeter to move upward until the center of the orifice flowmeter is located at the midpoint between the two laser measuring devices 3. Then, activate the laser measuring devices 3. Pull the moving plate 13 along the slide rail 17. The moving plate 13 drives the bidirectional screw 9 to move through the rotating circular plate 6 and the connecting block 20. The bidirectional screw 9 drives the rotating plate 12 to move through the threaded plate 11. The rotating plate 12 drives the laser measuring devices 3 to move until the orifice flowmeter to be detected passes through the two laser measuring devices 3. Based on the data of the laser measuring devices 3, the detection operation of the outer diameter of the orifice flowmeter is completed. When it is necessary to detect the inner hole diameter of the orifice flowmeter, repeat the above operation, make the orientation of the laser measuring devices 3 face outward, then make the distance between the two laser measuring devices 3 less than the inner hole diameter of the orifice flowmeter, activate the laser measuring devices 3 again, and pull the moving plate 13 along the slide rail 17 to make the orifice flowmeter pass through the two laser measuring devices 3, thereby completing the detection operation of the inner hole diameter of the orifice flowmeter; During the above detection process, during the process of moving the moving plate 13, under the action of the slide rod 22 and the wavy groove 19, the moving rod 14 following the moving plate 13 will move up and down relative to the moving plate 13. The moving rod 14 drives the control plate 15 to move up and down. The contact between the control plate 15 and the control rod 16 will cause the rotating circular plate 6 to rotate self - clockwise, and the rotating circular plate 6 rotates back and forth. The rotating circular plate 6 drives the bidirectional screw 9 to rotate back and forth through the connecting block 20. The bidirectional screw 9 drives the rotating plate 12 to rotate back and forth through the threaded plate 11. The rotating plate 12 drives the laser measuring devices 3 to rotate back and forth. As a result, during the measurement, the measurement position of the laser measuring devices 3 is not fixed. Therefore, during the detection, if the data of the laser measuring devices 3 changes, it indicates that there are certain defects on the surface of the orifice flowmeter, that is, the circles of the outer or inner hole of the orifice flowmeter are not standard circles, and thus the detection effect of the orifice flowmeter can be achieved.

[0016] As Figure 8 、 Figure 9 、 Figure 10, a friction cleaning component is installed on the outer side of the rotating plate 12. The friction cleaning component includes two sliding plates 25 that slide through the rotating plate 12. A cleaning plate 26 is slidably connected to the outer sides of the two sliding plates 25. A plurality of first springs 30 are fixedly connected between the cleaning plate 26 and the sliding plates 25. A connecting plate 32 is also fixedly connected between the two sliding plates 25. A plurality of second springs 33 are fixedly connected between the connecting plate 32 and the rotating plate 12. A plurality of round rods 34 are fixedly connected to the lower side of the connecting plate 32. A moving frame 27 is slidably connected to the outer side of the threaded plate 11. Two clamping rods 28 are symmetrically and fixedly connected to the side wall of the moving frame 27. A plurality of triangular plates 29 are also fixedly connected between the two clamping rods 28. A positioning rod 10 is fixedly connected to the upper side of the moving plate 13; First, a cleaning towel is fixedly installed on the outer side of the cleaning plate 26. After adjusting the distance between the two laser measuring devices 3, when the orifice flowmeter passes through the two laser measuring devices 3, the cleaning plate 26 should be in contact with the orifice flowmeter, and the first spring 30 should be in a compressed state. Then, during the measurement operation, when the entire rotating circular plate 6 rotates relative to the moving plate 13, due to the notch on the upper side of the moving frame 27, when the positioning rod 10 abuts against the notch, Figure 4 and Figure 9 Based on the direction of, it will cause the moving frame 27 to move to the right relative to the threaded plate 11. The moving frame 27 drives the clamping rods 28 and the triangular plates 29 to move to the right as a whole. When the triangular plate 29 abuts against the round rod 34, it will cause the round rod 34 to move upward relative to the rotating plate 12. The round rod 34 drives the connecting plate 32 to move upward. While the connecting plate 32 compresses the second spring 33, it drives the sliding plates 25 and the cleaning plate 26 to move upward. When the positioning rod 10 disconnects from the notch, under the action of the second spring 33, the cleaning plate 26 and the sliding plates 25 as a whole return to their original positions relative to the rotating plate 12. As a result, during the detection process, the cleaning plate 26 will form a friction cleaning effect on the orifice flowmeter, maintaining the cleanliness of the measurement surface of the orifice flowmeter, and thus maintaining the accuracy of the measurement results. At the same time, under the limiting action of the sliding plates 25 and the cleaning plate 26, the laser measuring device 3 is located between the sliding plates 25 and the cleaning plate 26, which can also reduce the adverse effects of the external environment on the laser, achieving multiple benefits with one action.

[0017] Such as Figure 11 、 Figure 12 , a knocking component is installed on the outer side of the rotating plate 12. The knocking component includes through grooves 31 opened on the side walls of the two sliding plates 25. Two fixed frames 35 are fixedly connected to the outer side of the rotating plate 12. An inclined plate 36 is slidably connected to the fixed frames 35 and the through grooves 31. A knocking rod 37 is fixedly connected to the side wall of the inclined plate 36 through a fixed block. A knocking cylinder 39 is slidably connected to the outer side of the knocking rod 37. A third spring 38 is fixedly connected between the knocking cylinder 39 and the knocking rod 37; First, based on Figure 11Based on the direction, the inclined plate 36 and the through groove 31 are connected for front-back sliding. Therefore, during the up-and-down movement of the sliding plate 25 and the cleaning plate 26, under the restrictive action of the fixed frame 35, it will cause the inclined plate 36 to move relative to the sliding plate 25. When the sliding plate 25 and the cleaning plate 26 move upward, the sliding plate 25 drives the inclined plate 36 to move upward. Under the restrictive action of the fixed frame 35, the inclined plate 36 will move backward relative to the sliding plate 25. The inclined plate 36 drives the knocking rod 37 and the knocking cylinder 39 to move backward through the fixed block. When the sliding plate 25 and the cleaning plate 26 move downward, it will cause the knocking rod 37 and the knocking cylinder 39 to move forward. The knocking cylinder 39 abuts against the orifice flowmeter, forming a knocking effect on the orifice flowmeter. When using the laser measuring device 3 for detection, the detection effect on the surface of the orifice flowmeter can be completed according to the laser intensity received by the laser receiver. Through the knocking of the knocking cylinder 39, and if there are defects in the orifice flowmeter, through the knocking of the knocking cylinder 39, the defects can be enlarged, and thus the detection effect of the laser receiver can be improved.

[0018] In the present invention, when a geometric dimension measurement operation of the orifice flowmeter is required, first move the fixture 2 along the frame 5 until the position of the fixture 2 meets the working requirements. Then rotate the threaded rod until the threaded rod abuts against the frame 5, thereby completing the position adjustment and fixing operation of the fixture 2. Then place the orifice flowmeter on the fixture 2 and clamp and fix the orifice flowmeter through the hydraulic jaw, finally completing the installation and fixing effect of the orifice flowmeter. The above are all prior arts; Before the laser measurement operation, when it is necessary to detect the outer diameter of the orifice flowmeter, first rotate the rotating plate 12. The rotating plate 12 drives the laser measuring device 3 to rotate until the laser measuring device 3 faces inward (that is, the positions of the laser measuring device 3 and the threaded plate 11 are as Figure 7As shown, then rotate the bidirectional screw 9. Since the thread directions on both sides of the bidirectional screw 9 are opposite, and since the threaded plate 11 and the right-angle rod 8 are slidably connected, rotating the bidirectional screw 9 will drive the threaded plates 11 to move away from each other until the distance between the two laser measuring devices 3 is slightly greater than the outer diameter of the orifice flowmeter. Then, start the hydraulic rod 4. The hydraulic rod 4 drives the orifice flowmeter to move upward until the center of the orifice flowmeter is located at the midpoint between the two laser measuring devices 3. Then, start the laser measuring devices 3. Pull the moving plate 13 along the slide rail 17. The moving plate 13 drives the bidirectional screw 9 to move through the rotating circular plate 6 and the connecting block 20. The bidirectional screw 9 drives the rotating plate 12 to move through the threaded plate 11. The rotating plate 12 drives the laser measuring devices 3 to move until the orifice flowmeter to be detected passes through the two laser measuring devices 3. According to the data of the laser measuring devices 3, the detection operation of the outer diameter of the orifice flowmeter is completed. When it is necessary to detect the inner hole diameter of the orifice flowmeter, repeat the above operation to make the orientation of the laser measuring devices 3 face outward. Then, make the distance between the two laser measuring devices 3 less than the inner hole diameter of the orifice flowmeter. Start the laser measuring devices 3 again and pull the moving plate 13 along the slide rail 17 to make the orifice flowmeter pass through the two laser measuring devices 3, thereby completing the detection operation of the inner hole diameter of the orifice flowmeter; During the above detection process, when moving the moving plate 13, under the action of the slide rod 22 and the wavy groove 19, the moving rod 14 following the moving plate 13 will move up and down relative to the moving plate 13. The moving rod 14 drives the control plate 15 to move up and down. When the control plate 15 abuts against the control rod 16, it will cause the rotating circular plate 6 to rotate self - rotatably, and the rotating circular plate 6 rotates back and forth. The rotating circular plate 6 drives the bidirectional screw 9 to rotate back and forth through the connecting block 20. The bidirectional screw 9 drives the rotating plate 12 to rotate back and forth through the threaded plate 11. The rotating plate 12 drives the laser measuring devices 3 to rotate back and forth. As a result, when measuring, the measuring position of the laser measuring devices 3 is not fixed. Therefore, during the detection, if the data of the laser measuring devices 3 changes, it indicates that there are certain defects on the surface of the orifice flowmeter, that is, the circles of the outer or inner hole of the orifice flowmeter are not standard circles, thus forming a detection effect on the orifice flowmeter; After adjusting the distance between the two laser measuring devices 3, when the orifice flowmeter passes through the two laser measuring devices 3, the cleaning plate 26 should be in contact with the orifice flowmeter, and the first spring 30 should be in a compressed state. Then, during the measurement operation, when the circular plate 6 rotates as a whole relative to the moving plate 13, since there is a notch on the upper side of the moving frame 27, when the positioning rod 10 comes into contact with the notch, it will cause the moving frame 27 to move to the right relative to the threaded plate 11. The moving frame 27 drives the clamping rod 28 and the triangular plate 29 to move to the right as a whole. When the triangular plate 29 comes into contact with the round rod 34, it will cause the round rod 34 to move upward relative to the rotating plate 12. The round rod 34 drives the connecting plate 32 to move upward. While compressing the second spring 33, the connecting plate 32 drives the sliding plate 25 and the cleaning plate 26 to move upward. When the positioning rod 10 disconnects from the notch, under the action of the second spring 33, the cleaning plate 26 and the sliding plate 25 as a whole return to their original positions relative to the rotating plate 12. As a result, during the detection process, the cleaning plate 26 will form a friction cleaning effect on the orifice flowmeter, maintaining the cleaning effect of the measurement surface of the orifice flowmeter, and thus maintaining the accuracy of the measurement results. At the same time, under the restrictive action of the sliding plate 25 and the cleaning plate 26, the laser measuring device 3 is located between the sliding plate 25 and the cleaning plate 26, which can also reduce the adverse effects of the external environment on the laser, achieving multiple benefits with one action; When the sliding plate 25 and the cleaning plate 26 move upward, the sliding plate 25 drives the inclined plate 36 to move upward. Under the restrictive action of the fixed frame 35, the inclined plate 36 will move backward relative to the sliding plate 25. The inclined plate 36 drives the knocking rod 37 and the knocking cylinder 39 to move backward through the fixed block. When the sliding plate 25 and the cleaning plate 26 move downward, it will cause the knocking rod 37 and the knocking cylinder 39 to move forward. When the knocking cylinder 39 comes into contact with the orifice flowmeter, it will form a knocking effect on the orifice flowmeter. When using the laser measuring device 3 for detection, the detection effect on the surface of the orifice flowmeter can be completed according to the laser intensity received by the laser receiver. Through the knocking of the knocking cylinder 39, and if there are defects in the orifice flowmeter, through the knocking of the knocking cylinder 39, the defects can be enlarged, thereby improving the detection effect of the laser receiver.

Claims

1. A laser measuring device for geometric dimensions of an orifice flowmeter, comprising a workbench (1), characterized in that: A clamping assembly is installed on the upper side of the workbench (1); a measuring assembly is installed on the upper side of the workbench (1); the measuring assembly includes two laser measuring devices (3); a slide rail (17) is fixedly connected to the upper side of the workbench (1); a movable plate (13) is slidably connected inside the slide rail (17); a side wall of the movable plate (13) is rotatably connected to a rotating circular plate (6) via a rotating rod; a connecting block (20) is fixedly connected to the side wall of the rotating circular plate (6); a bidirectional screw (9) is rotatably penetrated through the side wall of the connecting block (20); both outer sides of the bidirectional screw (9) are threadedly connected to a threaded plate (11); two right-angle rods (8) are symmetrically fixedly connected to the side wall of the connecting block (20); the two right-angle rods (8) and the threaded plate (11) are slidably connected; an end of the threaded plate (11) is rotatably connected to a rotating plate (12); the laser measuring device (3) and the rotating plate (12) are fixedly connected; and a rotating assembly for controlling the rotation of the threaded plate (11) is installed on the upper side of the workbench (1).

2. The orifice flowmeter geometric dimension laser measuring device according to claim 1, characterized in that: The rotating assembly comprises two clamping plates (18) fixedly mounted on the upper side of the workbench (1), the side walls of the two clamping plates (18) are both provided with a wave groove (19), the side wall of the movable plate (13) is slidably connected to a movable rod (14), the lower side of the movable rod (14) is fixedly connected to a connecting rod (21), both sides of the connecting rod (21) are fixedly connected to sliding rods (22), one end of the sliding rod (22) extends to the wave groove (19) and is slidably connected to the wave groove (19), the upper side of the movable rod (14) is fixedly connected to a control plate (15), the side wall of the rotating circular plate (6) is fixedly connected to a control rod (16), and a torsion spring (7) is fixedly connected between the rotating circular plate (6) and the movable plate (13).

3. The orifice flowmeter geometric dimension laser measuring device according to claim 2, characterized in that: A friction cleaning assembly is installed on the outer side of the rotating plate (12), and the friction cleaning assembly includes two slide plates (25) that slide through the rotating plate (12), and the two slide plates (25) are slidably connected to the outer sides of the two slide plates (25) with a cleaning plate (26), and a plurality of first springs (30) are fixedly connected between the cleaning plate (26) and the slide plates (25), and a connecting plate (32) is also fixedly connected between the two slide plates (25), and a plurality of second springs (33) are fixedly connected between the connecting plate (32) and the rotating plate (12), and a plurality of round rods (34) are fixedly connected to the lower side of the connecting plate (32), and a movable frame (27) is slidably connected to the outer side of the threaded plate (11), and two clamping rods (28) are symmetrically fixedly connected to the side wall of the movable frame (27), and a plurality of triangular plates (29) are also fixedly connected between the two clamping rods (28), and a positioning rod (10) is fixedly connected to the upper side of the movable plate (13).

4. The orifice flowmeter geometric dimension laser measuring device according to claim 3, characterized in that: A striking assembly is installed on the outer side of the rotating plate (12), and the striking assembly comprises a through slot (31) opened on the side walls of two slide plates (25). Two fixed frames (35) are fixedly connected to the outer side of the rotating plate (12). An inclined plate (36) is slidably connected to the fixed frame (35) and the through slot (31). A striking rod (37) is fixedly connected to the side wall of the inclined plate (36) via a fixed block. A striking cylinder (39) is slidably connected to the outer side of the striking rod (37), and a third spring (38) is fixedly connected between the striking cylinder (39) and the striking rod (37).

5. The orifice flowmeter geometric dimension laser measuring device according to claim 1, characterized in that: The clamping assembly comprises a hydraulic rod (4) fixedly mounted on the upper side of the workbench (1); the output end of the hydraulic rod (4) is fixedly connected to a frame (5); the outer side of the frame (5) is slidably connected to a plurality of clamps (2); the lower side of each clamp (2) is threadedly connected to a threaded rod.

6. The orifice flowmeter geometric dimension laser measuring device according to claim 5, characterized in that: The outer side of each clamp (2) is fixedly connected with an anti-slip rubber pad.

7. The orifice flowmeter geometric dimension laser measuring device according to claim 1, characterized in that: Two mounting holes (23) are symmetrically formed on the upper side of the rotating plate (12); a bolt (24) is threadedly connected to the side wall of the threaded plate (11); one end of the bolt (24) extends into the mounting hole (23).

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