A laser measuring device and method for tension insulators

Abstract

This invention belongs to the field of insulator testing technology, specifically a laser measuring device and method for tensioned insulators. Addressing the problem that existing measuring devices easily scratch the insulator surface during measurement, the following solution is proposed: a U-shaped base with a main bearing seat fixed to the upper surface of the U-shaped base away from the opening. A horizontal shaft extending horizontally towards the center of the opening at the other end of the U-shaped base is rotatably connected to the middle of the main bearing seat. A main support frame is sleeved and fixed to the outer circumference of the horizontal shaft near the main bearing seat. A cantilever beam parallel to the horizontal shaft is provided at the end of the main support frame away from the main bearing seat. This invention allows for rapid grabbing of both ends of the conveyed insulator body during testing, followed by flipping it to a vertical position for testing. After testing, a further 90-degree flip allows for repositioning to a horizontal position, facilitating direct installation of the device on a traditional conveyor belt.

Description

Technical Field

[0001] This invention relates to the field of insulator testing technology, and in particular to a laser measuring device and method for tensioned insulators. Background Technology

[0002] With the rapid development of the power industry, especially in the construction of high-voltage and ultra-high-voltage transmission lines, the requirements for insulator performance are becoming increasingly stringent. The main function of insulators is to support power lines and prevent current leakage; therefore, their quality directly affects the safety and reliability of the power system.

[0003] Before the advent of laser inspection technology, insulator inspection mainly relied on visual inspection, mechanical measurement, and other traditional methods. These methods have several limitations: insufficient accuracy: manual measurement is easily affected by human factors, resulting in low measurement accuracy. Low efficiency: traditional inspection methods are usually time-consuming and cannot meet the needs of large-scale production and installation. To address these shortcomings, we propose a laser measurement device and method that uses a laser measuring instrument for non-contact measurement of the roundness of insulator discs to determine if they meet the required standards. Summary of the Invention

[0004] To overcome the aforementioned shortcomings of the prior art, the present invention provides a laser measurement device that synchronously scans the circumference of each disk using a rotating laser rangefinder and determines the roundness of the disk based on the scanning results: This invention provides a laser measuring device for tensioned insulators, comprising a U-shaped base. A main bearing seat is fixed to the upper surface of the U-shaped base at the end furthest from the opening. A horizontal shaft extending horizontally towards the center of the opening at the other end of the U-shaped base is rotatably connected to the middle of the main bearing seat. A main support frame is sleeved and fixed to the outer circumference of the horizontal shaft near the main bearing seat. A cantilever beam parallel to the horizontal shaft is provided at the end of the main support frame furthest from the main bearing seat. Coaxial and symmetrical outer fixing rings one and two are respectively provided at the ends of the cantilever beam and the horizontal shaft furthest from the main support frame. Symmetrical gripping mechanisms are provided at the opposite ends of the outer fixing rings one and two. A track coaxial with the outer fixing ring two is fixed to the end of the horizontal shaft near the outer fixing ring two. A fixed ring is provided, and a toothed belt retainer is slidably sleeved on the track fixed ring. A measuring instrument fixing rod is fixed on the upper surface of the toothed belt retainer near the main support frame. The measuring instrument fixing rod includes an inclined rod end fixed on the toothed belt retainer and a main body fixing section that is parallel to the main support frame. The main body fixing section of the measuring instrument fixing rod is parallel to the main support frame, and multiple laser measuring instruments are arranged on the side of the main body fixing section near the gripping mechanism. With the measuring instrument fixing rod that can rotate around the insulator body, when measuring the roundness of the insulator body disk, each laser measuring instrument only needs to be aligned with the corresponding disk to perform rotation scanning. This not only adapts to insulator bodies with different spacings, but also eliminates the need for contact with the insulator body, reducing the risk of the insulator body being bumped.

[0005] A further feature of this invention is that the main support frame has motor mounting holes and spring fixing rods on opposite sides away from the main bearing seat. A reduction motor is fixed in the motor mounting holes, and a rope winding wheel is fixed to the top of the output shaft of the reduction motor. A pull rope is wound around the outer circumference of the rope winding wheel. The height of the rope winding wheel is adapted to the height of the toothed belt retainer. A return spring is fixed on the spring fixing rod. The outer wall of the toothed belt retainer partially surrounds and engages with a toothed conveyor belt. The two ends of the toothed conveyor belt are fixed to the ends of the pull rope and the return spring away from the main support frame, respectively. By using the rope winding wheel and the return spring, when it is necessary to control the laser measuring instrument to perform a circumferential inspection on the insulator body, it is only necessary to start the reduction motor to drive the rope winding wheel to wind the pull rope. At this time, the toothed belt retainer and the measuring instrument fixing rod can be rotated as a whole under the rubbing of the toothed conveyor belt. After the circumferential inspection, the rope winding wheel can be rotated in the opposite direction to complete the reset under the action of the return spring.

[0006] A further feature of the present invention is that a bar magnet is embedded at one end of the measuring instrument fixing rod near the toothed belt retainer, and a bar magnet attracting the bar magnet is fixed below the bar magnet at the initial position on the upper surface of the horizontal axis bar. This arrangement helps to reset the measuring instrument fixing rod after the test is completed.

[0007] A further feature of this invention is that side support frames are fixed between both sides of the main bearing seat and the U-shaped base, and a flipping gear is fixed to one end of the horizontal shaft rod away from the track fixing ring, passing through the main bearing seat. An electric push rod is fixed to the side of the U-shaped base, and the extension direction of the electric push rod is tangent to the flipping gear. A rack push rod is fixed to the end of the electric push rod extension rod, and the rack push rod is slidably connected to the upper surface of the U-shaped base. The rack push rod and the flipping gear mesh with each other. By reciprocating the rack push rod, the insulator body after being gripped can be flipped and repositioned, thereby enabling batch inspection of the insulator bodies on the production line.

[0008] A further feature of this invention is that the ends of the U-shaped base away from the main bearing seat are respectively fixed with conveying devices of the same structure, and the two conveying devices respectively include a support frame one and a support frame two of the same structure. The upper surface of the support frame one is fixed with two parallel discharge rods, and the top of the support frame two is fixed with two parallel feeding rods. The ends of the discharge rods and the feeding rods near the gripping mechanism are reserved with an upward-curving part to prevent the insulator body resting on the two discharge rods from rushing out of the conveying device. The ends of the two feeding rods near the upward-curving part are reserved with temporary blocking protrusions. The distance between the two feeding rods is less than the overall length of the insulator body.

[0009] A further feature of this invention is that an adjusting groove is provided on the side of the main support frame near the gripping mechanism, and a positioning slider is slidably connected in the adjusting groove. A positioning pin is provided on the lower surface of the positioning slider, and multiple positioning holes adapted to the positioning pin are provided on the side of the main support frame. The outer wall of the positioning slider and the inner wall of the adjusting groove form a sliding fit. By providing a positioning slider that can slide along the adjusting groove, the distance between the two gripping mechanisms can be adjusted according to the length of different insulator bodies, thereby adapting to the detection of insulator bodies of different sizes.

[0010] A further feature of this invention is that the main body fixing section of the measuring instrument fixing rod has a strip-shaped hole in the middle, and multiple tie rods distributed at equal intervals are screwed into the strip-shaped hole. The laser measuring instrument is fixed to the end of the tie rod away from the main support frame. By setting the tie rod that can slide freely in the strip-shaped hole and be fixed at any time, the distance between two adjacent laser measuring instruments can be adjusted arbitrarily as needed, thereby measuring the insulator body with different disc spacings.

[0011] A further feature of this invention is that the gripping mechanism includes a drive internally threaded tube rotatably connected to the inner circumference of the outer fixing ring and located away from the transverse axis bar. An annular groove is formed on the outer circumference of the drive internally threaded tube. A limiting ring that slides into the annular groove is fixed to the inner circumference of the outer fixing ring. A stud is screwed into the middle of the drive internally threaded tube. The stud and the drive internally threaded tube constitute a drive mechanism. A Y-shaped rack is fixed to the end of the stud near the clamped insulator body. Two centrally symmetrically distributed hinged chords are fixed to the end of the outer fixing ring away from the drive internally threaded tube. Parallel and equally high double-headed shafts are respectively provided at the ends of the two hinged chords away from the outer fixing ring. Two hinged chords are hinged to symmetrical bow-shaped clamps at their ends near the double-headed shaft. Symmetrical C-shaped retaining rings with opposite openings are fixed to the ends of the two bow-shaped clamps away from the outer fixing ring. Each bow-shaped clamp has a half-gear meshing with a Y-shaped rack at its end near the double-headed shaft. Anti-torsion grooves are provided on opposite sides of the two hinged chords, and two anti-torsion sliders are fixed to the ends of the studs, slidingly engaging with the corresponding anti-torsion grooves. This allows for clamping or releasing operations on the insulator body ends simply by rotating the internal threaded tube in both directions. This rotation drives the Y-shaped rack to rotate the corresponding two half-gears in the opposite direction, thereby opening and closing the two bow-shaped clamps.

[0012] A further feature of this invention is that the gripping mechanism includes a cylindrical slider slidably connected to the inner wall of the outer fixing ring at the end away from the fixed insulator body. The cylindrical slider replaces the stud and is fixed to the end of the Y-shaped rack. On the opposite side of the two hinged pins, near the end of the cylindrical slider, mutually symmetrical permanent magnets are fixed. Electromagnets are embedded in the ends of the cylindrical sliders near the two permanent magnets. When the two C-shaped retaining rings need to be released, the electromagnets are energized and attract the adjacent permanent magnets, and vice versa.

[0013] A laser measurement method for tensioned insulators includes the following steps: Step 1: First, control the two C-shaped retaining rings in the gripping mechanism to open, and then control the extension rod of the electric push rod to retract, so as to rotate the main support frame and the two gripping mechanisms to the side closer to the second support frame. At this time, move the nearest insulator body over the temporary stop to the gripping position, and then operate the two gripping mechanisms to clamp and fix the insulator body. Step 2: Extend the electric push rod halfway and then stop. At this time, the rotation of the flip gear will raise the main support frame and the gripped insulator body. Then, start the geared motor to rotate the set number of revolutions until the measuring instrument fixing rod rotates around the insulator body one revolution. At the same time, the laser measuring instrument fixed on the measuring instrument fixing rod will transmit the measurement data back to the control center. The control center will analyze the data transmitted from each angle and then compare the fluctuation amplitude to determine whether the roundness dimension of the disc is qualified. Step 3: After the test, start the deceleration motor in reverse to reset the measuring instrument fixing rod. Then, continue to control the extension rod of the electric push rod to extend to the maximum. At this time, transfer the tested insulator body to the two discharge support rods, and then release the two gripping mechanisms to complete the test. Finally, control the electric push rod to reset and perform the next gripping test.

[0014] The beneficial effects of this invention are as follows: 1. By setting up two gripping mechanisms that can carry the insulator body to flip, the two ends of the insulator body can be quickly gripped during the inspection, and then flipped to a vertical position for inspection. After the inspection is completed, it can be flipped another 90 degrees to transfer it to a horizontal position again, which is beneficial for directly installing this device on the side of a traditional conveyor belt.

[0015] 2. By setting up a laser measuring instrument that can rotate around the insulator body in a vertical position, it can not only adapt to insulator bodies with different spacing, but also reduce the risk of the insulator body being bumped or knocked without contacting the insulator body.

[0016] 3. By using a conveyor with temporary baffles, the first insulator body to be tested can be spaced apart from the next insulator body to be tested, avoiding scraping when lifting and effectively protecting the surface of the insulator body from damage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of a laser measuring device for tensioned insulators proposed in this invention; Figure 2 This is a schematic diagram of the rear structure of a laser measuring device for tensioning insulators proposed in this invention; Figure 3 This is a schematic diagram of the overall structure of a laser measuring device for tensioned insulators proposed in this invention during the measuring process; Figure 4 This is a schematic diagram of the overall structure of a laser measuring device for tensioned insulators in the loading state, as proposed in this invention. Figure 5 This is a top view of a laser measuring device for tensioned insulators proposed in this invention; Figure 6This invention proposes a laser measuring device for tensioned insulators. Figure 5 Schematic diagram of the cross-sectional structure along line AA; Figure 7 An exploded view of a gripping mechanism in an embodiment of a laser measuring device for tensioning insulators proposed in this invention; Figure 8 This is a schematic diagram of the overall structure of the rotary measurement module in a laser measurement device for tensioned insulators proposed in this invention; Figure 9 This is a schematic diagram of the main support frame in a laser measurement device for tensioned insulators proposed in this invention; Figure 10 This is a schematic diagram of the gripping mechanism after it is released in Embodiment 2 of the laser measuring device for tensioned insulators proposed in this invention; Figure 11 This is an exploded view of the gripping mechanism in Embodiment 2 of the laser measurement device for tensioned insulators proposed in this invention.

[0018] In the diagram: 1. U-shaped base; 2. Pull rope; 3. Electric push rod; 4. Reversing gear; 5. Main bearing seat; 6. Side support frame; 7. Rope reel; 8. Gear motor; 9. Positioning hole; 10. Main support frame; 1001. Horizontal shaft bar; 1002. Adjusting slide; 11. Measuring instrument fixing rod; 12. Cantilever beam; 13. Laser measuring instrument; 14. Drive mechanism; 141. Drive internal thread tube; 142. Stud; 143. Anti-torsion slider; 15. Outer fixing ring one; 6. Bow-shaped clamp; 17. C-shaped retaining ring; 18. Toothed belt retaining ring; 19. Toothed conveyor belt; 20. Track fixing ring; 21. Positioning slider; 22. Outer fixing ring II; 23. Rack push rod; 24. Return spring; 25. Insulator body; 26. Discharge support rod; 27. Support frame I; 28. Support frame II; 29. ​​Temporary stop protrusion; 30. Motor mounting hole; 31. Hinge chord column; 32. Y-shaped rack; 33. Columnar slider; 34. Electromagnet; 35. Permanent magnet. Detailed Implementation

[0019] The technical solutions 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.

[0020] Example 1, refer to Figures 1-9A laser measuring device for tensioned insulators includes a U-shaped base 1. A main bearing seat 5 is fixed to the upper surface of the U-shaped base 1 at the end away from the opening. A horizontal shaft 1001 extending horizontally towards the middle of the opening at the other end of the U-shaped base 1 is rotatably connected to the middle of the main bearing seat 5. A main support frame 10 is sleeved and fixed to the outer circumference of the horizontal shaft 1001 near the main bearing seat 5. A cantilever beam 12 parallel to the horizontal shaft 1001 is provided at the end of the main support frame 10 away from the main bearing seat 5. The cantilever beam 12 and the horizontal shaft 1001 are connected. At the end furthest from the main support frame 10, coaxial and symmetrical outer fixing ring 15 and outer fixing ring 22 are respectively provided. At the opposite ends of outer fixing ring 15 and outer fixing ring 22, symmetrical gripping mechanisms are respectively provided. At the end of the horizontal shaft 1001 near outer fixing ring 22, a track fixing ring 20 coaxial with outer fixing ring 22 is fixed. A toothed belt retainer 18 is slidably sleeved on the track fixing ring 20. A measuring instrument fixing rod 11 is fixed on the upper surface of the toothed belt retainer 18 near the main support frame 10. The measuring instrument fixing rod 11 includes an inclined rod end fixed to the toothed belt retainer 18 and a main body fixing section that is parallel to the main support frame 10. The main body fixing section of the measuring instrument fixing rod 11 is parallel to the main support frame 10, and multiple laser measuring instruments 13 are arranged on the side of the main body fixing section near the gripping mechanism. By setting two gripping mechanisms that can carry the insulator body 25 to rotate, the two ends of the insulator body 25 that is conveyed can be quickly gripped during the test, and then rotated to a vertical state for testing. After the test is completed, it can be rotated another 90 degrees to transfer it to a horizontal state again, which is beneficial for directly installing this device on the side of a traditional conveyor belt. With the measuring instrument fixing rod 11 that can rotate around the insulator body 25, when measuring the roundness of the insulator body 25 disc, each laser measuring instrument 13 only needs to be aligned with the corresponding disc to perform a rotational scan. This not only can adapt to insulator bodies 25 with different spacing, but also does not require contact with the insulator body 25, reducing the risk of the insulator body 25 being bumped.

[0021] On the opposite sides of the main support frame 10 away from the main bearing seat 5, there are motor mounting holes 30 and spring fixing rods respectively. A geared motor 8 is fixed in the motor mounting hole 30. A rope winding wheel 7 is fixed at the top of the output shaft of the geared motor 8. A pull rope 2 is wound around the outer circumference of the rope winding wheel 7. The height of the rope winding wheel 7 is matched with the height of the toothed belt retainer 18. A return spring 24 is fixed on the spring fixing rod. The toothed belt retainer 18 is semi-enclosed by a toothed conveyor belt 19. The two ends of the toothed conveyor belt 19 are fixed to the pull rope 2 and the end of the return spring 24 away from the main support frame 10 respectively. When the laser measuring instrument 13 needs to be controlled to perform a circumferential inspection on the insulator body 25, the geared motor 8 is started to drive the rope winding wheel 7 to wind the pull rope 2. At this time, the toothed belt retainer 18 and the measuring instrument fixing rod 11 can be rotated as a whole under the rubbing of the toothed conveyor belt 19. After the circumferential inspection, the rope winding wheel 7 is rotated in the opposite direction to complete the reset under the action of the return spring 24.

[0022] In this invention, a bar magnet is embedded at one end of the measuring instrument fixing rod 11 near the toothed belt retainer 18, and a bar magnet is fixed below the bar magnet 1 when the upper surface of the horizontal shaft 1001 is close to the initial position of the bar magnet 1, which attracts the bar magnet 2. With this arrangement, it can help the measuring instrument fixing rod 11 to reset after the test is completed.

[0023] Reference Figure 2 Side support frames 6 are fixed between the two sides of the main bearing seat 5 and the U-shaped base 1. The end of the horizontal shaft 1001 away from the track fixing ring 20 passes through the main bearing seat 5 and is fixed with a flip gear 4. An electric push rod 3 is fixed on the side of the U-shaped base 1. The extension direction of the electric push rod 3 is tangent to the flip gear 4. A rack push rod 23 is fixed at the end of the extension rod of the electric push rod 3. The rack push rod 23 is slidably connected to the upper surface of the U-shaped base 1. The rack push rod 23 meshes with the flip gear 4. By reciprocating the rack push rod 23, the insulator body 25 after being grabbed can be flipped and moved. Then, the insulator bodies 25 on the production line can be inspected one by one in batches.

[0024] Reference Figures 3-4The U-shaped base 1 is fixed with a conveying device of the same structure at the end away from the main bearing seat 5. The two conveying devices include a support frame 1 27 and a support frame 28 of the same structure. The upper surface of the support frame 1 27 is fixed with two parallel discharge rods 26. The top of the support frame 28 is fixed with two parallel feeding rods. The discharge rods 26 and the feeding rods are reserved with an upward-curved part at the end near the gripping mechanism to prevent the insulator body 25 on the two discharge rods 26 from rushing out of the conveying device. The end of the two feeding rods near the upward-curved part is reserved with a temporary stop 29. The distance between the two feeding rods is less than the overall length of the insulator body 25. By setting the conveying device with the temporary stop 29, the first insulator body 25 to be tested can be separated from the next insulator body 25 to be tested, avoiding scratching when lifting, and effectively protecting the surface of the insulator body 25 from damage.

[0025] Reference Figure 2 and Figure 6 The main support frame 10 has an adjustment groove 1002 on the side near the gripping mechanism, and a positioning slider 21 is slidably connected in the adjustment groove 1002. The lower surface of the positioning slider 21 is provided with a positioning pin, and the side of the main support frame 10 has multiple positioning holes 9 that are adapted to the positioning pin. The outer wall of the positioning slider 21 and the inner wall of the adjustment groove 1002 form a sliding fit. By setting the positioning slider 21 that can slide along the adjustment groove 1002, the distance between the two gripping mechanisms can be adjusted according to the length of different insulator bodies 25, so as to adapt to the detection of insulator bodies 25 of different sizes.

[0026] In this invention, a strip-shaped hole is provided in the middle of the main fixing section of the measuring instrument fixing rod 11, and multiple tie rods distributed at equal intervals are screwed into the strip-shaped hole. The laser measuring instrument 13 is fixed to the end of the tie rod away from the main support frame 10. By setting the tie rod that can slide freely in the strip-shaped hole and be fixed at any time, the distance between two adjacent laser measuring instruments 13 can be adjusted arbitrarily as needed, thereby measuring the insulator body 25 with different disc spacing.

[0027] Reference Figures 6-7The gripping mechanism includes a drive internal threaded tube 141 rotatably connected to the inner circumference of the outer fixed ring 15 and located away from the transverse axis bar 1001. An annular groove is formed on the outer circumference of the drive internal threaded tube 141. A limiting ring that slides into the annular groove is fixed to the inner circumference of the outer fixed ring 15. A stud 142 is screwed into the middle of the drive internal threaded tube 141. The stud 142 and the drive internal threaded tube 141 constitute the drive mechanism 14. A Y-shaped rack 32 is fixed to the end of the stud 142 near the clamped insulator body 25. Two centrally symmetrically distributed hinged chords 31 are fixed to the end of the outer fixed ring 15 away from the drive internal threaded tube 141. Parallel and equally high double-headed shafts are respectively provided at the ends of the two hinged chords 31 away from the outer fixed ring 15. Two hinged chord posts 31 are respectively hinged to symmetrical bow-shaped clamping rods 16 at their ends near the double-headed shaft. The ends of the two bow-shaped clamping rods 16 away from the outer fixing ring 15 are respectively fixed with symmetrical C-shaped retaining rings 17 with opposite openings. The ends of the two bow-shaped clamping rods 16 near the double-headed shaft are each provided with a half gear that meshes with the Y-shaped rack 32. Anti-torsion grooves are provided on the opposite sides of the two hinged chord posts 31, and the ends of the studs 142 are fixed with two anti-torsion sliders 143 that slide and engage with the corresponding anti-torsion grooves. Thus, when it is necessary to clamp or release the end of the insulator body 25, it is only necessary to rotate the internal threaded tube 141 in both directions. At this time, the Y-shaped rack 32 will drive the corresponding two half gears to rotate in the opposite direction, thereby realizing the opening and closing of the two bow-shaped clamping rods 16.

[0028] Example 2, refer to Figure 10-11 The gripping mechanism also includes a cylindrical slider 33 that is slidably connected to the inner wall of the outer fixed ring 15 away from the end of the fixed insulator body 25. The cylindrical slider 33 replaces the stud 142 and is fixed to the end of the Y-shaped rack 32. Two hinged pins 31 are respectively fixed with symmetrical permanent magnets 35 on their opposite sides near the cylindrical slider 33. Electromagnets 34 are respectively embedded in the cylindrical slider 33 near the two permanent magnets 35. When the two C-shaped retaining rings 17 need to be released, the electromagnets 34 are attracted to the adjacent permanent magnets 35 after being energized, and repelled otherwise.

[0029] A laser measurement method for tensioned insulators includes the following steps: Step 1: First, control the two C-shaped retaining rings 17 in the gripping mechanism to open, and then control the extension rod of the electric push rod 3 to retract, so as to rotate the main support frame 10 and the two gripping mechanisms to the side closer to the support frame 28. At this time, move the nearest insulator body 25 to flip over the temporary stop 29 to the gripping position, and then operate the two gripping mechanisms to clamp and fix the insulator body 25. Step 2: When the extension rod of the control electric push rod 3 extends halfway and then stops, the main support frame 10 and the gripped insulator body 25 will be erected as the flip gear 4 rotates. Then, the reduction motor 8 will be started to rotate the set number of revolutions until the measuring instrument fixing rod 11 rotates around the insulator body 25 for one revolution. At the same time, the laser measuring instrument 13 fixed on the measuring instrument fixing rod 11 will transmit the measurement data back to the control center. The control center will analyze the data transmitted from each angle and then compare the fluctuation amplitude to determine whether the roundness dimension of the disc is qualified. Step 3: After the test, the measuring instrument fixing rod 11 is reset by reversing the starting reduction motor 8. Then, the extension rod of the electric push rod 3 is extended to its maximum. At this time, the tested insulator body 25 is transferred to the two discharge support rods 26. Then, the two gripping mechanisms are released to complete the test. Finally, the electric push rod 3 is reset to perform the next gripping test.

[0030] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A laser measuring device for tensioned insulators, comprising a U-shaped base (1), characterized in that, A main bearing seat (5) is fixed to the upper surface of the U-shaped base (1) away from the opening. A horizontal shaft (1001) extending horizontally to the upper part of the opening at the other end of the U-shaped base (1) is rotatably connected to the middle of the main bearing seat (5). A main support frame (10) is sleeved and fixed to the outer circumference of the horizontal shaft (1001) near the main bearing seat (5). A cantilever beam (12) parallel to the horizontal shaft (1001) is provided at the end of the main support frame (10) away from the main bearing seat (5). Coaxial and symmetrical outer fixing rings (15) and outer fixing rings are respectively provided at the ends of the cantilever beam (12) and the horizontal shaft (1001) away from the main support frame (10). Two (22), and the outer fixed ring one (15) and the outer fixed ring two (22) are respectively provided with symmetrical gripping mechanisms at opposite ends. The horizontal shaft bar (1001) is fixed with a track fixing ring (20) coaxial with the outer fixed ring two (22) at one end. A toothed belt clasp (18) is slidably sleeved on the track fixing ring (20). A measuring instrument fixing rod (11) is fixed on the upper surface of the toothed belt clasp (18) near the main support frame (10). The main body fixing section of the measuring instrument fixing rod (11) is parallel to the main support frame (10). Multiple laser measuring instruments (13) are provided on the side of the main body fixing section near the gripping mechanism.

2. The laser measuring device for tensioned insulators according to claim 1, characterized in that, The main support frame (10) is provided with motor mounting holes (30) and spring fixing rods on opposite sides away from the main bearing seat (5). A geared motor (8) is fixed in the motor mounting hole (30). A rope winding wheel (7) is fixed at the top of the output shaft of the geared motor (8). A pull rope (2) is wound around the outer circumference of the rope winding wheel (7). The height of the rope winding wheel (7) is matched with the height of the toothed belt retainer (18). A return spring (24) is fixed on the spring fixing rod. A toothed conveyor belt (19) is semi-enclosed by the outer wall of the toothed belt retainer (18). The two ends of the toothed conveyor belt (19) are fixed to the pull rope (2) and the return spring (24) at the ends away from the main support frame (10).

3. The laser measuring device for tension insulators according to claim 2, characterized in that, A bar magnet is embedded at one end of the measuring instrument fixing rod (11) near the toothed belt retainer (18), and a bar magnet is fixed below the bar magnet when it is in the initial position on the upper surface of the horizontal bar (1001) to attract it.

4. The laser measuring device for tension insulators according to claim 1, characterized in that, Side support frames (6) are fixed between the two sides of the main bearing seat (5) and the U-shaped base (1), and the end of the horizontal shaft bar (1001) away from the track fixing ring (20) passes through the main bearing seat (5) and is fixed with a flip gear (4). An electric push rod (3) is fixed on the side of the U-shaped base (1), and the extension direction of the electric push rod (3) is tangent to the flip gear (4). A rack push rod (23) is fixed at the end of the electric push rod (3), and the rack push rod (23) is slidably connected to the upper surface of the U-shaped base (1), and the rack push rod (23) meshes with the flip gear (4).

5. The laser measuring device for tension insulators according to claim 4, characterized in that, The U-shaped base (1) is fixed with a conveying device of the same structure at the end away from the main bearing seat (5). The two conveying devices include a support frame one (27) and a support frame two (28) of the same structure. The upper surface of the support frame one (27) is fixed with two parallel discharge rods (26). The top of the support frame two (28) is fixed with two parallel feeding rods. The discharge rod (26) and the feeding rod are both reserved with an upward tilt at the end near the gripping mechanism. The two feeding rods are both reserved with a temporary stop protrusion (29) at the end near the upward tilt. The distance between the two feeding rods is less than the overall length of the insulator body (25).

6. The laser measuring device for tension insulators according to claim 1, characterized in that, The main support frame (10) has an adjustment groove (1002) on the side near the gripping mechanism, and a positioning slider (21) is slidably connected in the adjustment groove (1002). The lower surface of the positioning slider (21) is provided with a positioning pin, and the side of the main support frame (10) is provided with multiple positioning holes (9) that are compatible with the positioning pin. The outer wall of the positioning slider (21) and the inner wall of the adjustment groove (1002) form a sliding fit.

7. The laser measuring device for tension insulators according to claim 1, characterized in that, The main body fixing section of the measuring instrument fixing rod (11) has a strip hole in the middle, and multiple tie rods distributed at equal distances are screwed into the strip hole. The laser measuring instrument (13) is fixed at the end of the tie rod away from the main support frame (10).

8. The laser measuring device for tension insulators according to claim 1, characterized in that, The gripping mechanism includes a drive internal thread tube (141) rotatably connected to the inner circumference of the outer fixed ring (15) and located away from the transverse shaft (1001). An annular groove is formed on the outer circumference of the drive internal thread tube (141). A limiting ring that slides into the annular groove is fixed to the inner circumference of the outer fixed ring (15). A stud (142) is screwed into the middle of the drive internal thread tube (141). The stud (142) and the drive internal thread tube (141) constitute a drive mechanism (14). A Y-shaped rack (32) is fixed to the end of the stud (142) near the clamped insulator body (25). Two centrally symmetrically positioned branches are fixed to the end of the outer fixed ring (15) away from the drive internal thread tube (141). The two hinged chords (31) are provided with parallel and equal-height double-headed shafts at the ends of the two hinged chords (31) away from the outer fixing ring (15). The ends of the two hinged chords (31) near the double-headed shafts are respectively hinged with symmetrical bow-shaped clamps (16). The ends of the two bow-shaped clamps (16) away from the outer fixing ring (15) are respectively fixed with symmetrical C-shaped retaining rings (17) with opposite openings. The ends of the two bow-shaped clamps (16) near the double-headed shafts are each provided with a half gear that meshes with the Y-shaped rack (32). The opposite sides of the two hinged chords (31) are provided with anti-torsion grooves, and the ends of the studs (142) are fixed with two anti-torsion sliders (143) that slide and engage with the corresponding anti-torsion grooves.

9. A laser measuring device for tension insulators according to claim 8, characterized in that, The gripping mechanism also includes a cylindrical slider (33) that is slidably connected to the inner wall of the outer fixed ring (15) away from the fixed insulator body (25). The cylindrical slider (33) is fixed to the end of the Y-shaped rack (32). On the opposite side of the two hinged chords (31), near the end of the cylindrical slider (33), there are symmetrical permanent magnets (35). At the end of the cylindrical slider (33) near the two permanent magnets (35), there are electromagnets (34). When the two C-shaped retaining rings (17) need to be released, the electromagnets (34) are attracted to the adjacent permanent magnets (35) after being energized, and repelled otherwise.

10. A laser measurement method for tension insulators, applied to a laser measurement device for tension insulators as described in claim 9, characterized in that, Includes the following steps: Step 1: First, control the two C-shaped retaining rings (17) in the gripping mechanism to open, and then control the extension rod of the electric push rod (3) to retract, so as to rotate the main support frame (10) and the two gripping mechanisms to the side closer to the second support frame (28). At this time, move the nearest insulator body (25) over the temporary stop (29) to the gripping position, and then operate the two gripping mechanisms to clamp and fix the insulator body (25). Step 2: When the extension rod of the control electric push rod (3) extends halfway and then stops, the main support frame (10) and the gripped insulator body (25) will be erected as the flip gear (4) rotates. Then the geared motor (8) is started to rotate the set number of times until the measuring instrument fixing rod (11) rotates around the insulator body (25) for one revolution. At the same time, the laser measuring instrument (13) fixed on the measuring instrument fixing rod (11) transmits the measurement data back to the control center. The control center analyzes the data transmitted from each angle and then compares the fluctuation amplitude to determine whether the roundness dimension of the disk is qualified. Step 3: After the test, the measuring instrument fixing rod (11) is reset by reversing the starting deceleration motor (8). Then, the extension rod of the electric push rod (3) is extended to the maximum. At this time, the tested insulator body (25) is transferred to the two discharge support rods (26). Then, the two gripping mechanisms are released to complete the test. Finally, the electric push rod (3) is reset and the next gripping test is performed.

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