Laser diameter measuring device for cable measurement

Abstract

The invention 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 and a control cabinet arranged on one side of the guide rail base, and further comprises a detection shell, the detection shell is arranged above the guide rail base, clamping units are arranged on the two side walls of the detection shell, and the clamping units are arranged on the guide rail base. The clamping unit is used for fixing a cable, and the cable penetrates through the interior of the detection shell; the laser detection unit is installed in the detection housing and is used for carrying out full-circumference diameter detection on the cable. The cable diameter is continuously detected in a sectional type follow-up detection mode, the influence of cable vibration on laser detection precision is effectively reduced, the accuracy and stability of a detection result are improved, meanwhile, diameter detection can be performed on the cable from different directions, the comprehensiveness of cable detection is effectively improved, and the detection efficiency is improved. And the influence of impurities such as dust, water and the like on the laser diameter measurement precision can be reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of cable diameter detection, and in particular relates to a laser diameter measuring device for cable measurement. Background Art

[0002] After the cable is insulated, its diameter directly affects its electrical performance, adaptability, and safety. Improper diameter may lead to insufficient insulation or installation difficulties. Therefore, precise testing is required to ensure compliance with specifications and guarantee cable quality and safety.

[0003] Currently, using laser to detect cable diameter is a common technology. For example, the laser diameter measuring device for cable measurement disclosed in patent announcement number CN108917628A has a non-contact feature that can realize online continuous cable diameter measurement. After the cable conductor is covered with insulation, the covering quality 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, causing laser offset or frequent changes in optical signals, seriously affecting the accuracy of diameter measurement, making it difficult to stably reflect the cable diameter, and bringing obstacles to production quality control. Summary of the Invention

[0004] The object of the present invention is to provide a laser diameter measuring device for cable measurement in order to solve the above problems.

[0005] To achieve the above object, 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 arranged on one side of the guide rail base, and further comprising:

[0006] A detection housing is provided above the guide rail base, and both side walls of the detection housing are provided with clamping units, which are used to fix the cable, and the cable passes through the interior of the detection housing;

[0007] A laser detection unit, installed inside the detection housing, for performing full-circumference diameter detection on the cable;

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

[0009] Preferably, the two clamping units each include a wire threading sleeve integrally formed on the side wall of the detection shell, a plurality of electric push rods are fixedly plugged into the side wall of the wire threading sleeve, and the telescopic end of each electric push rod is fixedly connected to an arc-shaped clamping block, each electric push rod pushes the corresponding arc-shaped clamping block to extend to 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 arranged inside the detection shell, a laser light board is installed at the lower end of the upper mounting plate, the laser surface projected by the laser light board is rectangular, and the width of the laser surface projected by the laser light board is greater than the cable diameter, a lower mounting plate symmetrically arranged with the upper mounting plate is installed inside the detection shell, a laser receiver is installed on the top of the lower mounting plate, the light receiving surface of the laser receiver is the same as the area of ​​the laser surface projected by the laser light board, the laser light board and the laser receiver are both electrically connected to the control cabinet, the guide rail base is installed with a flipping mechanism, and the upper mounting plate and the lower mounting plate are both installed on the inner side of the flipping mechanism.

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

[0012] Preferably, the flipping mechanism includes an arc-shaped plate arranged above the detection shell, the arc-shaped plate is fixedly mounted on the top of the guide rail base, the internal rotation of the detection shell is connected to a rotating sleeve, the upper mounting plate and the lower mounting plate are both fixed inside the rotating sleeve, a guide column is installed on one side of the outer wall of the rotating sleeve, the inner wall of the arc-shaped plate is provided with a guide slide matching the guide column, the side wall of the detection shell is provided with a guide hole matching the guide column, the guide column is slidably arranged on the inner side of the guide slide and the guide hole, the guide column will flip 180° after moving from the head end to the tail end of the guide slide, and the arc-shaped plate is installed with a cleaning assembly.

[0013] Preferably, the cleaning assembly includes a connecting rod fixedly mounted on the side wall of the arc plate, and a fixing ring is installed at one end of the connecting rod away from the arc plate, a sponge cover is fixedly mounted on the inner wall of the fixing ring, and the inner wall of the sponge cover is in sliding contact with the outer 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 to the inside of 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 barrel mouths of the cylinders. The ends of the two buffer rods away from the cylinders are commonly fixedly connected to a buffer plate, and buffer springs are provided between the two pistons and the inner walls of the cylinders on the same side.

[0015] Preferably, the side walls of the two cylinders are provided with air inlet holes, and air inlet check valves are installed inside the two air inlet holes. The side walls of the two cylinders are fixedly connected with air outlet pipes at positions between the air inlet holes and the pistons, and air outlet check valves are installed inside the two air outlet pipes. An annular cavity is provided inside the fixing ring, and the two air outlet pipes are connected to the annular cavity. A plurality of air injection holes are provided on the inner wall of the annular cavity.

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

[0017] 1. Through the cooperation of the guide rail base, control cabinet, detection housing, and laser detection unit, the diameter of the cable can be quickly measured by laser. Through the cooperation of the clamping unit, moving seat, and reverse thrust mechanism, the cable diameter can be continuously detected by segmented follow-up detection, effectively reducing the impact of cable vibration on the accuracy of laser detection and improving the accuracy and stability of the detection results.

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

[0019] 3. Through the provided cleaning component, the water, dust, etc. that may remain on the surface of the cable can be removed before the cable enters the interior of the detection shell, so as to prevent the water, dust, etc. from affecting the accuracy of laser detection. Secondly, the cooperation between the provided cylinder piston, buffer rod, buffer plate, buffer spring, air inlet, air inlet check valve, air outlet pipe, air outlet check valve, annular cavity and jet hole can not only buffer the detection shell when it moves back, so as to avoid damage to the laser detection unit due to excessive impact force of the return movement, but also the airflow generated by the buffer can be used to assist the cleaning component to improve the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0024] Figure 5 The present invention provides a laser diameter measuring device for cable measurement. Figure 3 A magnified view of the structure of part A;

[0025] Figure 6 The present invention provides a laser diameter measuring device for cable measurement. Figure 2 A magnified view of the structure of part B;

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

[0027] Figure: 1, guide rail base; 2, control cabinet; 3, detection housing; 4, clamping unit; 41, threading pipe sleeve; 42, electric push rod; 43, arc clamping block; 5, laser detection unit; 51, upper mounting plate; 52, laser light board; 53, lower mounting plate; 54, laser receiver; 6, moving seat; 7, reverse thrust mechanism; 71, right side plate; 72, tail travel switch; 73, reverse thrust plate; 74, through hole; 75, electromagnetic push rod; 76, left side plate; 77, Head travel switch; 8. Flip mechanism; 81. Arc plate; 82. Guide column; 83. Guide slide; 84. Rotating sleeve; 85. Guide hole; 9. Cleaning assembly; 91. Connecting rod; 92. Fixing ring; 93. Sponge sleeve; 10. Cylinder; 11. Piston; 12. Buffer rod; 13. Buffer plate; 14. Buffer spring; 15. Air inlet; 16. Air inlet check valve; 17. Air outlet pipe; 18. Air outlet check valve; 19. Annular cavity; 20. Jet hole. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] like Figure 1-Figure 7 As shown, a laser diameter measuring device for cable measurement includes a guide rail base 1 and a control cabinet 2 arranged on one side of the guide rail base 1, and also includes: a detection shell 3, the detection shell 3 is arranged above the guide rail base 1, and the two side walls of the detection shell 3 are provided with clamping units 4, the clamping units 4 are used to fix the cables, and the cables pass through the interior of the detection shell 3, and the two clamping units 4 include a wire threading sleeve 41 integrally formed and arranged on the side wall of the detection shell 3, and the side wall of the wire threading sleeve 41 is fixedly plugged with multiple electric push rods 42, and the telescopic end of each electric push rod 42 is fixedly connected with an arc clamping block 43, and each electric push rod 42 pushes the corresponding arc clamping block 43 to extend to clamp and fix the cable, and each electric push rod 42 is electrically connected to the control cabinet 2.

[0030] The laser detection unit 5 is installed inside the detection shell 3 and is used to perform full-circumference diameter detection on the cable. The laser detection unit 5 includes an upper mounting plate 51 arranged inside the detection shell 3. A laser light board 52 is installed at the lower end of the upper mounting plate 51. The laser surface projected by the laser light board 52 is rectangular, and the width of the laser surface projected by the laser light board 52 is greater than the cable diameter. A lower mounting plate 53 symmetrically arranged with the upper mounting plate 51 is installed inside the detection shell 3. A laser receiver 54 is installed on 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 light board 52. The laser light board 52 and the laser receiver 54 are both 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 through the guide rail block. The guide rail base 1 is equipped with a reverse thrust mechanism 7. The reverse thrust mechanism 7 is used to push the movable seat 6 to move. The reverse thrust mechanism 7 includes a right side plate 71 fixedly installed on the top of the guide rail base 1. The side wall of the right side plate 71 is equipped with a tail travel switch 72. The right side plate 71 is provided with a reverse thrust plate 73 near the side of the movable seat 6. The side wall of the reverse thrust plate 73 is provided with a through hole 74 corresponding to the position of the tail travel switch 72. The side wall of the right side plate 71 is equipped with a A group of electromagnetic push rods 75 are formed, and the telescopic ends of each electromagnetic push rod 75 are fixedly connected to the side wall of the reverse thrust plate 73. A left side plate 76 is installed on the end face of the guide rail base 1 away from the side of the right side plate 71, and a head travel 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 group of electromagnetic push rods 75 to work according to the electrical signals fed back by the tail travel switch 72 and the head travel switch 77. When the head travel switch 77 and the tail travel switch 72 detect that the moving seat 6 moves to the specified position, they will feed back electrical signals to the control cabinet 2.

[0032] The guide rail base 1 is equipped with a flip mechanism 8, and the upper mounting plate 51 and the lower mounting plate 53 are both mounted on the inner side of the flip mechanism 8. The flip mechanism 8 includes an arc-shaped plate 81 arranged above the detection housing 3. The arc-shaped plate 81 is fixedly mounted on the top of the guide rail base 1. The internal rotation of the detection housing 3 is connected with a rotating sleeve 84. The upper mounting plate 51 and the lower mounting plate 53 are both fixed inside the rotating sleeve 84. A guide column 82 is installed on one side of the outer wall of the rotating sleeve 84. The inner wall of the arc-shaped plate 81 is provided with a guide slideway 83 matching the guide column 82. The side wall of the detection housing 3 is provided with a guide slideway matching the guide column 82. The matching guide hole 85 and the guide column 82 are slidably arranged on the inner side of the guide slide 83 and the guide hole 85. The guide column 82 will flip 180° after moving from the head end to the tail end of the guide slide 83. The arc plate 81 is equipped with a cleaning assembly 9. The cleaning assembly 9 includes a connecting rod 91 fixedly mounted on the side wall of the arc plate 81, and a fixing ring 92 is mounted on the end of the connecting rod 91 away from the arc plate 81. A sponge cover 93 is fixedly mounted on the inner wall of the fixing ring 92, and the inner wall of the sponge cover 93 is in sliding contact with the outer wall of the cable, which can prevent impurities such as water and dust 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 the interior of the two cylinders 10 is slidably connected with pistons 11, and the side walls of the two pistons 11 are installed with buffer rods 12, and the rod walls of the two buffer rods 12 are slidably connected to the tube mouth of the cylinder 10, and the two buffer rods 12 are fixedly connected to the buffer plate 13 at one end away from the cylinder 10. Buffer springs 14 are provided between the two pistons 11 and the inner wall of the cylinder 10 on the same side. The buffer springs 14 can be used to buffer and slow down the moving seat 6 to prevent the moving seat 6 from being subjected to excessive impact force when it moves back to the head end of the guide rail, causing damage to the laser light board 52 and the laser receiver 54.

[0034] The side walls of the two cylinders 10 are provided with air inlet holes 15, and the inside of the two air inlet holes 15 are equipped with air inlet check valves 16. The side walls of the two cylinders 10 are fixedly connected with air outlet pipes 17 at the position between the air inlet holes 15 and the piston 11, and the inside of the two air outlet pipes 17 are equipped with air outlet check valves 18. An annular cavity 19 is provided inside the fixing ring 92, and the two air outlet pipes 17 are connected to the annular cavity 19. The inner wall of the annular cavity 19 is provided with multiple air jet holes 20, which can back-blow out water, dust and other impurities in the pores inside the sponge cover 93, which is beneficial to the continuous cleaning effect of the sponge cover 93 on the cable.

[0035] The operating principle of the present invention is now described as follows: the cable that has been completed with insulation coating and has passed through the cooling system passes through the wire threading tube sleeve 41 and the interior of the detection housing 3 and is installed in the winding device. During the production of the cable, after the cable is wrapped with insulation coating and cooled, it is wound by the winding device. During this period, the outer diameter of the cable needs to be tested to promptly detect the phenomenon of unqualified outer diameter of the cable, so that the insulation coating process can be adjusted in time to reduce the production of defective products. When the outer diameter of the cable is tested, the detection work is started by the control cabinet 2;

[0036] After the control cabinet 2 is started, the control cabinet 2 will immediately control each electric push rod 42 to extend for a timed period of 2 seconds. At this time, multiple arc-shaped clamping blocks 43 on the same side move toward each other and abut against the outer wall of the cable, so that the cable can be fixed. Since the cable is clamped and fixed by the arc-shaped clamping block 43 at this time, the cable and the detection shell 3 are relatively fixed, and the cable is pulled by the winding device, and the cable will drive the detection shell 3 to move together. In this process, the control cabinet 2 controls the laser light board 52 to emit laser, and the rectangular laser is projected to the laser receiver 54. Since the cable passes through the position between the laser receiver 54 and the laser light board 52, part of the laser will be blocked by the cable. The laser intensity received by the laser receiver 54 can be used to determine the cable diameter. When the received laser intensity is high, it means that the cable diameter is too small and the amount of laser obstruction is too small. On the contrary, it means 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 greater the laser intensity, the higher the intensity of 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. When the cable diameter is unqualified, the control cabinet 2 will immediately issue a voice prompt. The staff needs to check the cable diameter deviation in time and find out the cause of the diameter deviation in time.

[0037] Among them, when the detection shell 3 starts to move with the cable, the detection shell 3 will move along the inner side of the curved plate 81. At this time, the guide column 82 installed on the outer wall of the rotating sleeve 84 will move along the guide slide 83 on the inner wall of the curved plate 81. When the detection shell 3 drives the moving seat 6 to move from the head end to the tail end of the guide rail base 1, the guide column 82 will also move from the head end to the tail end of the guide slide 83. At this time, the guide column 82 will drive the rotating sleeve 84 to rotate 180°. Therefore, during the movement of the detection shell 3, the rotating sleeve 84 will drive the laser light board 52 and the laser receiver 54 to flip 180°, so that the diameter of the cable can be fully detected (because the laser light board 52 and the laser receiver 54 are respectively located directly above and directly below the cable. Therefore, after the laser light board 52 and the laser receiver 54 rotate 180°, the side wall of the cable can be fully covered);

[0038] When the detection housing 3 drives the moving seat 6 to the tail end of the guide rail base 1, the tail travel switch 72 will detect that the moving seat 6 has reached the tail end. At this time, the tail travel switch 72 will feedback an electrical signal to the control cabinet 2, and the control cabinet 2 will immediately control each electric push rod 42 to retract, so that each arc clamping block 43 moves back and resets. At the same time, the control cabinet 2 will control the electromagnetic push rod 75 to work, and the electromagnetic push rod 75 will drive the reverse push plate 73 to move in the direction of the moving seat 6, thereby pushing the moving seat 6 to move back quickly. When the moving seat 6 moves back to the head end of the guide rail base 1, the head travel switch 77 will feedback an electrical signal to the control cabinet 2. At this time, the control cabinet 2 will control the electric push rod 42 to work again, clamp the cable and fix it, and control the electromagnetic push rod 75 to cut off the power (during the initial detection, in order to ensure that the detection housing 3 is at the head end position of the guide rail base 1, the control cabinet 2 It is necessary to control the electromagnetic push rod 75 to work, push the movable seat 6 to drive the detection housing 3 to the head end position of the guide rail base 1, and then repeat the above-mentioned detection action, wherein the length of the cable detected each time has an overlapping section. For example, the length of the first cable diameter detection is recorded as S1 section, and the length of the second cable diameter detection is recorded as S2 section. S1 and S2 have an overlapping section of at least 2 cm to ensure the continuity of the cable diameter detection and avoid missed detection (taking the maximum speed of 50 meters per minute as an example, the overlapping length of the overlapping section is 2 cm. Since different production lines have different requirements for the cable winding speed, the overlapping length can be adjusted by the control cabinet 2. For example, after receiving the electrical signal fed back by the head travel switch 77, the electric push rod 42 can be controlled to delay a certain time to clamp the cable to avoid the length of the overlapping section being too long, thereby affecting the detection efficiency);

[0039] Secondly, each time the moving seat 6 moves back to the head end position of the guide rail base 1, the moving seat 6 will push the buffer plate 13 to move, and the buffer plate 13 will drive the piston 11 to move through the buffer rod 12, so that the moving seat 6 can be buffered and decelerated by the buffer spring 14, so as to avoid the moving seat 6 from being subjected to excessive impact force when it moves back to the head end position of the guide rail, causing damage to the laser light board 52 and the laser receiver 54. At the same time, when the piston 11 moves, the air inside the cylinder 10 will be compressed. Under the action of the air inlet check valve 16 and the air outlet check valve 18, the squeezed air can only enter the annular cavity 19 through the air outlet pipe 17, and finally be discharged through the pores of the sponge sleeve 93. When the movable seat 6 moves toward the tail travel switch 72, the piston 11 moves back and resets 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 the pressure difference, and the sponge cover 93 can remove the water, dust, etc. that may remain on the surface of the cable that is about to enter the detection shell 3, thereby avoiding these impurities from affecting the accuracy of laser diameter measurement (because the cylinder 10 will transport air into the annular cavity 19 each time the movable seat 6 moves back, therefore, the airflow ejected from the air jet hole 20 can blow back the water, dust and other impurities in the internal pores of the sponge cover 93, which is beneficial to the continuous cleaning effect of the sponge cover 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 in the scope of protection of the present invention.

Claims

1. A laser diameter measuring device for measuring cables, 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 includes: A detection housing (3) is arranged above the guide rail base (1), and both side walls of the detection housing (3) are provided with clamping units (4), and the clamping units (4) are used to fix the cable, and the cable passes through the interior of the detection housing (3); A laser detection unit (5) is installed inside the detection housing (3) and is used to perform full-circumference diameter detection on the cable; A 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) through a guide rail block. The guide rail base (1) is installed with a reverse thrust mechanism (7). The reverse thrust mechanism (7) is used to push the movable seat (6) to move.

2. A laser diameter measuring device for cable measurement according to claim 1, characterized in that: The two clamping units (4) each include a wire threading sleeve (41) integrally formed and arranged on the side wall of the detection housing (3); a plurality of electric push rods (42) are fixedly connected to the side wall of the wire threading sleeve (41); and the telescopic end of each electric push rod (42) is fixedly connected to an arc-shaped clamping block (43); each electric push rod (42) pushes the corresponding arc-shaped clamping block (43) to extend to clamp and fix the cable, and each electric push rod (42) is electrically connected to the control cabinet (2).

3. The laser diameter measuring device for cable measurement according to claim 1, characterized in that: The laser detection unit (5) comprises an upper mounting plate (51) arranged inside the detection housing (3); a laser light board (52) is mounted on the lower end of the upper mounting plate (51); the laser surface projected by the laser light board (52) is rectangular, and the width of the laser surface projected by the laser light board (52) is greater than the diameter of the cable; a lower mounting plate (53) symmetrically arranged with the upper mounting plate (51) is mounted inside the detection housing (3); a laser receiver (54) is mounted on 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 light board (52); the laser light board (52) and the laser receiver (54) are both electrically connected to the control cabinet (2); the guide rail base (1) is mounted with a flip mechanism (8), and the upper mounting plate (51) and the lower mounting plate (53) are both mounted on the inner side of the flip mechanism (8).

4. A laser diameter measuring device for cable measurement according to claim 3, characterized in that: The reverse thrust mechanism (7) comprises a right side plate (71) fixedly mounted on the top of the guide rail base (1), a tail travel switch (72) being mounted on the side wall of the right side plate (71), a reverse thrust plate (73) being arranged at a position on the side of the right side plate (71) close to the movable seat (6), a through hole (74) corresponding to the position of the tail travel switch (72) being opened on the side wall of the reverse thrust plate (73), a group of electromagnetic push rods (75) being mounted on the side wall of the right side plate (71), and the telescopic end of each electromagnetic push rod (75) being fixedly connected to the side wall of the reverse thrust plate (73), a left side plate (76) being mounted at a position on the end face of the guide rail base (1) away from the side of the right side plate (71), a head travel switch (77) being mounted on the side wall of the left side plate (76), and the control cabinet (2) controlling the operation of the two clamping units (4) and the group of electromagnetic push rods (75) according to the electrical signals fed back by the tail travel switch (72) and the head travel switch (77).

5. A laser diameter measuring device for cable measurement according to claim 4, characterized in that: The flip mechanism (8) includes an arc-shaped plate (81) arranged above the detection housing (3), the arc-shaped plate (81) is fixedly mounted on the top of the guide rail base (1), the interior of the detection housing (3) is rotatably connected to a rotating sleeve (84), the upper mounting plate (51) and the lower mounting plate (53) are both fixed inside the rotating sleeve (84), a guide column (82) is mounted on one side of the outer wall of the rotating sleeve (84), the inner wall of the arc-shaped plate (81) is provided with a guide slideway (83) matching the guide column (82), the side wall of the detection housing (3) is provided with a guide hole (85) matching the guide column (82), the guide column (82) is slidably arranged on the inner side of the guide slideway (83) and the guide hole (85), the guide column (82) is flipped 180 degrees after moving from the head end to the tail end of the guide slideway (83), and the arc-shaped plate (81) is installed with a cleaning assembly (9).

6. A laser diameter measuring device for cable measurement according to claim 5, characterized in that: The cleaning assembly (9) comprises a connecting rod (91) fixedly mounted on the side wall of the arc-shaped plate (81), and a fixing ring (92) is mounted on one end of the connecting rod (91) away from the arc-shaped plate (81), a sponge cover (93) is fixedly mounted on the inner wall of the fixing ring (92), and the inner side wall of the sponge cover (93) is in sliding contact with the outer side wall of the cable.

7. A laser diameter measuring device for cable measurement according to claim 6, characterized in that: Two cylinders (10) are fixedly inserted into the side wall of the left side plate (76), and the interiors of the two cylinders (10) are slidably connected with pistons (11), the side walls of the two pistons (11) are installed with buffer rods (12), and the rod walls of the two buffer rods (12) are slidably connected to the barrel mouths of the cylinders (10), and the ends of the two buffer rods (12) away from the cylinders (10) are fixedly connected with a buffer plate (13), and buffer springs (14) are provided between the two pistons (11) and the inner walls of the cylinders (10) on the same side.

8. The laser diameter measuring device for cable measurement according to claim 7, characterized in that: The side walls of the two cylinder barrels (10) are each provided with an air inlet hole (15), and an air inlet check valve (16) is installed inside the two air inlet holes (15). The side walls of the two cylinder barrels (10) are each fixedly connected with an air outlet pipe (17) at a position between the air inlet hole (15) and the piston (11), and an air outlet check valve (18) is installed inside the two air outlet pipes (17). An annular cavity (19) is provided inside the fixing ring (92), and the two air outlet pipes (17) are both connected to the annular cavity (19). The inner wall of the annular cavity (19) is provided with a plurality of air injection holes (20).

Images