A laser diameter measuring device for cable measurement

Abstract

The application belongs to the technical field of cable diameter detection, and particularly relates to a laser diameter measuring device for cable measurement, which comprises a guide rail base, a control cabinet arranged on one side of the guide rail base, a detection shell arranged above the guide rail base, clamping units arranged on two side walls of the detection shell and used for fixing a cable, a laser detection unit installed in the detection shell and used for detecting the full circumference diameter of the cable. The application can continuously detect the diameter of the cable by means of segmented follow-up detection, effectively reduce the influence of cable vibration on the laser detection accuracy, improve the accuracy and stability of the detection result, simultaneously detect the diameter of the cable from different directions, effectively improve the comprehensiveness of cable detection, and reduce the influence of impurities such as dust and liquid on the laser diameter measuring accuracy.

Description

Technical Field

[0001] This invention belongs to the field of cable diameter detection technology, and in particular relates to a laser diameter measuring device for cable measurement. Background Technology

[0002] After the cable insulation layer is applied, the diameter directly affects its electrical performance, compatibility, and safety. An improper diameter may lead to insufficient insulation or installation difficulties. Therefore, accurate testing is required to ensure compliance with specifications and guarantee cable quality and safe use.

[0003] Currently, using lasers to detect cable diameter is a common technology. For example, the laser diameter measuring device for cable measurement disclosed in patent publication number CN108917628A has the non-contact characteristic to realize online continuous diameter measurement of cables. After the cable conductor is covered with insulation, the quality of the insulation needs to be monitored by diameter measurement. However, when the cable is continuously transported, it will vibrate due to factors such as unstable traction device, mechanical vibration of production equipment and its own elastic deformation. This will cause the laser to deviate or the light signal to change frequently, which will seriously affect the accuracy of diameter measurement and make it difficult to stably reflect the cable diameter, thus hindering production quality control. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a laser diameter measuring device for cable measurement.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a laser diameter measuring device for cable measurement, comprising a guide rail base and a control cabinet disposed on one side of the guide rail base, and further comprising:

[0006] The detection housing is located above the guide rail base. Both side walls of the detection housing are provided with clamping units for fixing the cable, which passes through the interior of the detection housing.

[0007] A laser detection unit, installed inside the detection housing, is used to perform full-circumference diameter detection on the cable;

[0008] A movable seat is installed at the bottom of the detection housing. The movable seat slides along the track of the guide rail base via a guide rail block. The guide rail base is equipped with a reverse thrust mechanism, which is used to push the movable seat to move.

[0009] Preferably, both clamping units include an integrally formed conduit sleeve disposed on the side wall of the detection housing. Multiple electric push rods are fixedly inserted into the side wall of the conduit sleeve, and each electric push rod has an arc-shaped clamping block fixedly connected to its telescopic end. Each electric push rod pushes the corresponding arc-shaped clamping block to extend and clamp and fix the cable, and each electric push rod is electrically connected to the control cabinet.

[0010] Preferably, the laser detection unit includes an upper mounting plate disposed inside the detection housing. A laser lamp plate is mounted on the lower end of the upper mounting plate. The laser surface projected by the laser lamp plate is rectangular, and the width of the laser surface projected by the laser lamp plate is greater than the cable diameter. A lower mounting plate is symmetrically arranged with the upper mounting plate inside the detection housing. A laser receiver is mounted on the top of the lower mounting plate. The light-receiving surface of the laser receiver has the same area as the laser surface projected by the laser lamp plate. Both the laser lamp plate and the laser receiver are electrically connected to the control cabinet. A flipping mechanism is installed on the guide rail base, and both the upper and lower mounting plates are installed inside the flipping mechanism.

[0011] Preferably, the reverse thrust mechanism includes a right side plate fixedly installed on the top of the guide rail base. A tail limit switch is installed on the side wall of the right side plate. A reverse thrust plate is provided on the side of the right side plate near the movable seat. A through hole corresponding to the position of the tail limit switch is opened on the side wall of the reverse thrust plate. A set of electromagnetic push rods is installed on the side wall of the right side plate, and the telescopic ends of each electromagnetic push rod are fixedly connected to the side wall of the reverse thrust plate. A left side plate is installed on the end face of the guide rail base away from the right side plate. A head limit switch is installed on the side wall of the left side plate. The control cabinet controls the two clamping units and the set of electromagnetic push rods to work according to the electrical signals fed back by the tail limit switch and the head limit switch.

[0012] Preferably, the flipping mechanism includes an arc-shaped plate disposed above the detection housing, the arc-shaped plate being fixedly mounted on the top of the guide rail base, a rotating sleeve being rotatably connected inside the detection housing, the upper mounting plate and the lower mounting plate being fixed inside the rotating sleeve, a guide post being mounted on one side of the outer wall of the rotating sleeve, a guide slide matching the guide post being provided on the inner wall of the arc-shaped plate, a guide hole matching the guide post being provided on the side wall of the detection housing, the guide post being slidably disposed inside the guide slide and the guide hole, the guide post being flipped 180° after moving from the first end to the last end of the guide slide, and a cleaning component being mounted on the arc-shaped plate.

[0013] Preferably, the cleaning assembly includes a connecting rod fixedly installed on the side wall of the arc-shaped plate, and a fixing ring is installed at the end of the connecting rod away from the arc-shaped plate. A sponge sleeve is fixedly installed on the inner wall of the fixing ring, and the inner side wall of the sponge sleeve slides in contact with the outer side wall of the cable.

[0014] Preferably, two cylinders are fixedly inserted into the side wall of the left side plate, and pistons are slidably connected inside the two cylinders. Buffer rods are installed on the side walls of the two pistons, and the rod walls of the two buffer rods are slidably connected to the cylinder openings. A buffer plate is fixedly connected to the end of the two buffer rods away from the cylinders. Buffer springs are provided between the two pistons and the inner walls of the cylinders on the same side.

[0015] Preferably, both cylinders have air inlet holes on their side walls, and each air inlet hole is equipped with an air inlet check valve. Both cylinders have air outlet pipes fixedly inserted into their side walls at the position between the air inlet holes and the piston, and each air outlet pipe is equipped with an air outlet check valve. The fixed ring has an annular cavity inside, and both air outlet pipes are connected to the annular cavity. The inner wall of the annular cavity has multiple air jet holes.

[0016] Compared with existing technologies, the advantages of a laser diameter measuring device for cable measurement are:

[0017] 1. By cooperating with the guide rail base, control cabinet, detection housing, and laser detection unit, the diameter of the cable can be quickly measured by laser. By cooperating with the clamping unit, moving seat, and reverse push mechanism, the diameter of the cable can be continuously detected by segmented follow-up detection, which effectively reduces the impact of cable vibration on the accuracy of laser detection and improves the accuracy and stability of the detection results.

[0018] 2. Through the set flipping mechanism, the laser detection unit can be automatically flipped by the movement of the detection shell during the follow-up detection of cable diameter, so that the diameter of the cable can be detected from different directions, effectively improving the comprehensiveness of cable detection.

[0019] 3. The cleaning components can remove any residual water or dust from the cable surface before it enters the detection housing, preventing these substances from affecting the accuracy of laser detection. Furthermore, the coordinated design of the cylinder piston, buffer rod, buffer plate, buffer spring, air inlet, air inlet check valve, air outlet pipe, air outlet check valve, annular cavity, and air jet hole not only buffers the detection housing during retraction, preventing excessive impact from damaging the laser detection unit, but also utilizes the airflow generated by the buffer to assist the cleaning components, improving the cleaning effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a laser diameter measuring device for cable measurement provided by the present invention;

[0021] Figure 2 This is a cross-sectional structural schematic diagram of a laser diameter measuring device for cable measurement provided by the present invention;

[0022] Figure 3 This is a side view of the internal structure of the detection housing of a laser diameter measuring device for cable measurement provided by the present invention;

[0023] Figure 4 This is a three-dimensional structural diagram of the arc-shaped plate of a laser diameter measuring device for cable measurement provided by the present invention;

[0024] Figure 5 This invention provides a laser diameter measuring device for cable measurement. Figure 3 Enlarged view of the structure of section A;

[0025] Figure 6 This invention provides a laser diameter measuring device for cable measurement. Figure 2 Enlarged view of the structure of section B;

[0026] Figure 7 This is a schematic diagram of the internal structure of the cylinder of a laser diameter measuring device for cable measurement provided by the present invention.

[0027] In the diagram: 1. Guide rail base; 2. Control cabinet; 3. Detection housing; 4. Clamping unit; 41. Cable conduit sleeve; 42. Electric push rod; 43. Arc-shaped clamping block; 5. Laser detection unit; 51. Upper mounting plate; 52. Laser light board; 53. Lower mounting plate; 54. Laser receiver; 6. Moving base; 7. Reverse thrust mechanism; 71. Right side plate; 72. Tail limit switch; 73. Reverse thrust plate; 74. Through hole; 75. Electromagnetic push rod; 76. Left side plate; 77. 8. Head limit switch; 9. Tilting mechanism; 10. Arc plate; 11. Guide post; 12. Guide slide; 13. Rotating sleeve; 14. Guide hole; 15. Cleaning assembly; 16. Connecting rod; 17. Fixing ring; 18. Sponge sleeve; 19. Cylinder; 10. Piston; 11. Buffer rod; 12. Buffer plate; 13. Buffer spring; 14. Air inlet; 15. Air inlet check valve; 16. Air outlet pipe; 17. Air outlet check valve; 18. Annular cavity; 19. Jet nozzle. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] like Figures 1-7 As shown, a laser diameter measuring device for cable measurement includes a guide rail base 1 and a control cabinet 2 disposed on one side of the guide rail base 1. It also includes a detection housing 3, which is disposed above the guide rail base 1. Clamping units 4 are provided on both side walls of the detection housing 3. The clamping units 4 are used to fix the cable, which passes through the interior of the detection housing 3. Each clamping unit 4 includes an integrally formed conduit sleeve 41 disposed on the side wall of the detection housing 3. Multiple electric push rods 42 are fixedly inserted into the side wall of the conduit sleeve 41, and each electric push rod 42 has an arc-shaped clamping block 43 fixedly connected to its telescopic end. Each electric push rod 42 pushes the corresponding arc-shaped clamping block 43 to extend and clamp the cable. Each electric push rod 42 is electrically connected to the control cabinet 2.

[0030] The laser detection unit 5 is installed inside the detection housing 3 and is used to perform full-circumference diameter detection on the cable. The laser detection unit 5 includes an upper mounting plate 51 installed inside the detection housing 3. A laser lamp plate 52 is installed at the lower end of the upper mounting plate 51. The laser surface projected by the laser lamp plate 52 is rectangular, and the width of the laser surface projected by the laser lamp plate 52 is greater than the diameter of the cable. A lower mounting plate 53 is installed inside the detection housing 3, which is symmetrically arranged with the upper mounting plate 51. A laser receiver 54 is installed on the top of the lower mounting plate 53. The light-receiving surface of the laser receiver 54 has the same area as the laser surface projected by the laser lamp plate 52. Both the laser lamp plate 52 and the laser receiver 54 are electrically connected to the control cabinet 2.

[0031] The movable seat 6 is installed at the bottom of the detection housing 3. The movable seat 6 slides along the track of the guide rail base 1 via a guide rail block. The guide rail base 1 is equipped with a push mechanism 7, which is used to push the movable seat 6 to move. The push mechanism 7 includes a right side plate 71 fixedly installed on the top of the guide rail base 1. A tail limit switch 72 is installed on the side wall of the right side plate 71. A push plate 73 is provided on the side of the right side plate 71 near the movable seat 6. A through hole 74 corresponding to the position of the tail limit switch 72 is opened on the side wall of the right side plate 71. A... A set of electromagnetic push rods 75 are provided, and the telescopic ends of each electromagnetic push rod 75 are fixedly connected to the side wall of the push plate 73. A left side plate 76 is installed on the end face of the guide rail base 1 away from the right side plate 71. A head limit switch 77 is installed on the side wall of the left side plate 76. The control cabinet 2 controls the two clamping units 4 and a set of electromagnetic push rods 75 to work according to the electrical signals fed back by the tail limit switch 72 and the head limit switch 77. When the head limit switch 77 and the tail limit switch 72 detect that the moving seat 6 has moved to the designated position, they will feed back an electrical signal to the control cabinet 2.

[0032] The guide rail base 1 is equipped with a flipping mechanism 8, and the upper mounting plate 51 and the lower mounting plate 53 are both installed inside the flipping mechanism 8. The flipping mechanism 8 includes an arc-shaped plate 81 disposed above the detection housing 3. The arc-shaped plate 81 is fixedly installed on the top of the guide rail base 1. A rotating sleeve 84 is rotatably connected inside the detection housing 3. The upper mounting plate 51 and the lower mounting plate 53 are both fixed inside the rotating sleeve 84. A guide post 82 is installed on one side of the outer wall of the rotating sleeve 84. A guide slide 83 matching the guide post 82 is opened on the inner wall of the arc-shaped plate 81. A guide slide 83 matching the guide post 82 is opened on the side wall of the detection housing 3. The guide hole 85 is matched, and the guide post 82 is slidably set inside the guide slide 83 and the guide hole 85. After the guide post 82 moves from the first end to the last end of the guide slide 83, it will rotate 180°. The arc plate 81 is equipped with a cleaning component 9. The cleaning component 9 includes a connecting rod 91 fixedly installed on the side wall of the arc plate 81, and a fixing ring 92 is installed at the end of the connecting rod 91 away from the arc plate 81. A sponge sleeve 93 is fixedly installed on the inner wall of the fixing ring 92, and the inner side wall of the sponge sleeve 93 slides in contact with the outer side wall of the cable, which can prevent water, dust and other impurities from affecting the accuracy of laser diameter measurement.

[0033] Two cylinders 10 are fixedly inserted into the side wall of the left side plate 76, and pistons 11 are slidably connected inside the two cylinders 10. Buffer rods 12 are installed on the side walls of the two pistons 11, and the rod walls of the two buffer rods 12 are slidably connected to the cylinder openings of the cylinders 10. Buffer plates 13 are fixedly connected to the ends of the two buffer rods 12 away from the cylinders 10. Buffer springs 14 are provided between the two pistons 11 and the inner walls of the cylinders 10 on the same side. The buffer springs 14 can buffer and decelerate the moving seat 6, preventing the moving seat 6 from being subjected to excessive impact force when it moves back to the first position of the guide rail, which could damage the laser lamp plate 52 and the laser receiver 54.

[0034] Both cylinders 10 have air inlets 15 on their side walls, and each air inlet 15 is equipped with an air inlet check valve 16. Both cylinders 10 have exhaust pipes 17 fixedly connected to their side walls between the air inlets 15 and the piston 11, and each exhaust pipe 17 is equipped with an exhaust check valve 18. The fixed ring 92 has an annular cavity 19 inside, and both exhaust pipes 17 are connected to the annular cavity 19. The inner wall of the annular cavity 19 has multiple air jet holes 20, which can backflush out water, dust and other impurities from the pores inside the sponge sleeve 93, thus improving the continuous cleaning effect of the sponge sleeve 93 on the cable.

[0035] The operating principle of the present invention is explained as follows: After the insulation is wrapped and the cable has passed through the cooling system, it passes through the conduit sleeve 41 and the detection housing 3 and is installed in the winding equipment. In the production of the cable, after the cable is wrapped with insulation and cooled, it is wound by the winding equipment. During this period, the outer diameter of the cable needs to be detected in time to detect the phenomenon of unqualified outer diameter of the cable. In this way, the insulation wrapping process can be adjusted in time to reduce the production of defective products. When the outer diameter of the cable is detected, the detection work is started by controlling the cabinet 2.

[0036] After the control cabinet 2 is started, it immediately controls each electric push rod 42 to extend for a timed 2 seconds. At this time, multiple arc-shaped clamping blocks 43 on the same side move towards each other and abut against the outer wall of the cable, thus fixing the cable. Since the cable is clamped and fixed by the arc-shaped clamping blocks 43, the cable is relatively fixed to the detection housing 3. However, due to the pulling action of the winding equipment, the cable will move the detection housing 3 together. During this process, the control cabinet 2 controls the laser light board 52 to emit a laser, which is projected in a rectangular shape onto the laser receiver 54. Since the cable passes through the area between the laser receiver 54 and the laser light board 52, part of the laser is blocked by the cable. Therefore, the laser is received... The laser intensity received by receiver 54 can be used to determine the cable diameter. A higher laser intensity indicates that the cable diameter is too small and the amount of laser blockage is too small. Conversely, a lower laser intensity indicates that the cable diameter is too large. The laser receiver 54 converts the received laser into an electrical signal and feeds it back to the control cabinet 2. The higher the laser intensity, the stronger the feedback electrical signal. Therefore, the control cabinet 2 can quickly determine whether the cable diameter is qualified by comparing the electrical signal fed back by the laser receiver 54 with the standard electrical signal corresponding to the standard diameter cable. If the cable diameter is unqualified, the control cabinet 2 will immediately issue a voice prompt. The staff needs to check the offset of the cable diameter in time and find out the cause of the diameter offset.

[0037] When the detection housing 3 moves along with the cable, it moves along the inner side of the arc plate 81. At this time, the guide post 82 installed on the outer wall of the rotating sleeve 84 moves along the guide slide 83 on the inner side wall of the arc plate 81. When the detection housing 3 drives the moving seat 6 to move from the first end to the last end of the guide rail base 1, the guide post 82 also moves from the first end to the last end of the guide slide 83. At this time, the guide post 82 drives the rotating sleeve 84 to rotate 180°. Therefore, during the movement of the detection housing 3, the rotating sleeve 84 drives the laser light plate 52 and the laser receiver 54 to rotate 180°, so that the diameter of the cable can be detected around the entire circumference (since the laser light plate 52 and the laser receiver 54 are directly above and below the cable, respectively, after the laser light plate 52 and the laser receiver 54 rotate 180°, the side wall of the cable can be fully covered).

[0038] When the detection housing 3 moves the movable seat 6 to the tail end of the guide rail base 1, the tail limit switch 72 detects that the movable seat 6 has reached the tail end. At this time, the tail limit switch 72 sends an electrical signal to the control cabinet 2, and the control cabinet 2 immediately controls each electric push rod 42 to retract, causing each arc-shaped clamping block 43 to return to its original position. Simultaneously, the control cabinet 2 controls the electromagnetic push rod 75 to operate, which drives the reverse push plate 73 to move towards the movable seat 6, thereby pushing the movable seat 6 to move back quickly. When the movable seat 6 returns to the head end of the guide rail base 1, the head limit switch 77 sends an electrical signal to the control cabinet 2. At this time, the control cabinet 2 again controls the electric push rod 42 to operate, clamping and fixing the cable, and controls the electromagnetic push rod 75 to de-energize (during the initial detection, to ensure that the detection housing 3 is at the head end of the guide rail base 1, the control cabinet 2...). The electromagnetic push rod 75 needs to be controlled to work, pushing the moving seat 6 to move the detection housing 3 to the first end position of the guide rail base 1), and then repeating the above detection action. The length of each cable detection has an overlapping section. For example, the length of the first cable diameter detection is recorded as S1, and the length of the second cable diameter detection is recorded as S2. S1 and S2 have an overlap of at least 2 cm to ensure the continuity of cable diameter detection and avoid missed detection (taking the highest winding speed of 50 meters per minute as an example, the overlap length of the overlapping section is 2 cm. Since different production lines have different requirements for cable winding speed, the overlap length can be adjusted by controlling the cabinet 2. For example, after receiving the electrical signal fed back by the head limit switch 77, the electric push rod 42 can be controlled to delay for a certain time to clamp and fix the cable to avoid the overlap length being too high and affecting the detection efficiency).

[0039] Secondly, each time the movable seat 6 returns to the first position of the guide rail base 1, the movable seat 6 pushes the buffer plate 13 to move. The buffer plate 13 then drives the piston 11 to move through the buffer rod 12. This allows the buffer spring 14 to buffer and decelerate the movable seat 6, preventing excessive impact force on the movable seat 6 when it returns to the first position of the guide rail, which could damage the laser lamp plate 52 and the laser receiver 54. At the same time, when the piston 11 moves, it compresses the air inside the cylinder 10. The compressed air, under the action of the inlet one-way valve 16 and the outlet one-way valve 18, can only enter the annular cavity 19 through the outlet pipe 17 and is finally discharged through the holes of the sponge sleeve 93. When the movable seat 6 moves toward the tail limit switch 72, the piston 11 returns to its original position under the action of the buffer spring 14. At this time, the external air is replenished into the cylinder 10 through the air inlet 15 under the action of pressure difference. The sponge sleeve 93 can remove water, dust and other impurities that may remain on the surface of the cable that is about to enter the detection housing 3, thereby avoiding these impurities from affecting the accuracy of laser diameter measurement. (Since the cylinder 10 will deliver air into the annular cavity 19 every time the movable seat 6 moves back, the airflow ejected from the jet hole 20 can backflush out water, dust and other impurities in the pores inside the sponge sleeve 93, which is beneficial to the continuous cleaning effect of the sponge sleeve 93 on the cable.)

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 laser diameter measuring device for cable measurement, comprising a guide rail base (1) and a control cabinet (2) arranged on one side of the guide rail base (1), characterized in that, Also include: The detection shell (3) is arranged above the guide rail base (1), both side walls of the detection shell (3) are provided with clamping units (4), the clamping units (4) are used for fixing the cable, and the cable passes through the inside of the detection shell (3); The laser detection unit (5) is installed in the inside of the detection shell (3), and is used for full circumference diameter detection of the cable; The moving seat (6) is installed at the bottom of the detection shell (3), the moving seat (6) slides along the track of the guide rail base (1) through the guide rail block, and the guide rail base (1) is provided with a counter thrust mechanism (7) for pushing the moving seat (6) to move; The laser detection unit (5) includes an upper mounting plate (51) arranged in the inside of the detection shell (3), a laser lamp plate (52) is installed at the lower end of the upper mounting plate (51), the laser surface projected by the laser lamp plate (52) is rectangular, and the width of the laser surface projected by the laser lamp plate (52) is greater than the diameter of the cable, a lower mounting plate (53) is installed in the inside of the detection shell (3) and is arranged symmetrically with the upper mounting plate (51), a laser receiver (54) is installed at the top of the lower mounting plate (53), the light receiving surface of the laser receiver (54) is the same as the area of the laser surface projected by the laser lamp plate (52), the laser lamp plate (52) and the laser receiver (54) are electrically connected with the control cabinet (2), and the guide rail base (1) is provided with a turnover mechanism (8), and the upper mounting plate (51) and the lower mounting plate (53) are installed on the inside of the turnover mechanism (8); The turnover mechanism (8) includes an arc-shaped plate (81) arranged above the detection shell (3), the arc-shaped plate (81) is fixedly installed at the top of the guide rail base (1), a rotating sleeve (84) is rotatably connected in the inside of the detection shell (3), the upper mounting plate (51) and the lower mounting plate (53) are fixedly installed in the inside of the rotating sleeve (84), a guide column (82) is installed on one side of the outer side wall of the rotating sleeve (84), a guide slide (83) matched with the guide column (82) is formed in the inner wall of the arc-shaped plate (81), a guide hole (85) matched with the guide column (82) is formed in the side wall of the detection shell (3), and the guide column (82) is slidably arranged in the inside of the guide slide (83) and the guide hole (85). The guide column (82) is turned over by 180° after moving from the leading end to the trailing end of the guide slide (83), and the arc-shaped plate (81) is provided with a cleaning assembly (9); When the detection shell (3) starts to move along with the cable, the detection shell (3) moves along the inside of the arc-shaped plate (81), at this time, the guide column (82) installed on the outer side wall of the rotating sleeve (84) moves along the guide slide (83) of the inner side wall of the arc-shaped plate (81), when the detection shell (3) drives the moving seat (6) to move from the leading end to the trailing end of the guide rail base (1), the guide column (82) also moves from the leading end to the trailing end of the guide slide (83), at this time, the guide column (82) drives the rotating sleeve (84) to rotate by 180°. Through the cooperation of the clamping units (4), the moving seat (6) and the counter-pushing mechanism (7), the cable diameter is continuously detected in a segmented follow-up detection mode, and the length of the cable detected each time has an overlapping section.

2. The laser diameter measuring device for cable measurement according to claim 1, wherein Both of the clamping units (4) comprise a threading sleeve (41) integrally arranged on the side wall of the detection shell (3), a plurality of electric push rods (42) are fixedly inserted into the side wall of the threading sleeve (41), and the telescopic end of each electric push rod (42) is fixedly connected with an arc-shaped clamping block (43). Each electric push rod (42) drives the corresponding arc-shaped clamping block (43) to extend to clamp and fix the cable, and each electric push rod (42) is electrically connected with the control cabinet (2).

3. The laser diameter measuring device for cable measurement according to claim 1, wherein The counter-pushing mechanism (7) comprises a right side plate (71) fixedly installed on the top of the guide rail base (1), a tail stroke switch (72) is installed on the side wall of the right side plate (71), a counter-pushing plate (73) is arranged on the side of the right side plate (71) close to the moving seat (6), a through hole (74) corresponding to the position of the tail stroke switch (72) is formed in the side wall of the counter-pushing plate (73), a group of electromagnetic push rods (75) are installed on the side wall of the right side plate (71), and the telescopic end of each electromagnetic push rod (75) is fixedly connected with the side wall of the counter-pushing plate (73). A left side plate (76) is installed on the end face of the guide rail base (1) away from the right side plate (71), a head stroke switch (77) is installed on the side wall of the left side plate (76), and the control cabinet (2) controls the work of the two clamping units (4) and the group of electromagnetic push rods (75) according to the electric signals fed back by the tail stroke switch (72) and the head stroke switch (77).

4. The laser diameter measuring device for cable measurement according to claim 3, wherein The cleaning assembly (9) comprises a connecting rod (91) fixedly installed on the side wall of the arc-shaped plate (81), and a fixed ring (92) is installed on the end of the connecting rod (91) away from the arc-shaped plate (81), a sponge sleeve (93) is fixedly installed on the inner wall of the fixed ring (92), and the inner side wall of the sponge sleeve (93) is in sliding contact with the outer side wall of the cable.

5. A laser diameter measuring device for cable measurement according to claim 4, characterized in that, The side wall of the left side plate (76) is fixedly inserted with two cylinder barrels (10), and the interiors of the two cylinder barrels (10) are slidably connected with pistons (11). The side walls of the two pistons (11) are both installed with buffer rods (12), the rod walls of the two buffer rods (12) are both slidably connected with the barrel openings of the cylinder barrels (10), the ends of the two buffer rods (12) away from the cylinder barrels (10) are fixedly connected with a buffer plate (13), and the buffer springs (14) are arranged between the two pistons (11) and the inner walls of the same side cylinder barrels (10).

6. A laser diameter measuring device for cable measurement according to claim 5, characterized in that, The side wall of two said cylinders (10) are provided with air inlet holes (15), and the inside of two air inlet holes (15) are provided with air inlet one-way valves (16), the side wall of two said cylinders (10) are fixedly inserted with air outlet pipes (17) between the air inlet holes (15) and the piston (11), and the inside of two air outlet pipes (17) are provided with air outlet one-way valves (18), the inside of the fixed ring (92) is provided with an annular cavity (19), and two air outlet pipes (17) are communicated with the annular cavity (19), and the inner side cavity wall of the annular cavity (19) is provided with a plurality of air injection holes (20).

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