A laser ranging type cable bend radius measuring device

Abstract

The application relates to a laser ranging type cable bending radius measuring device, which comprises an insulating rod and a laser ranging mechanism, both ends of the insulating rod are provided with clamping jaws, a sliding rail is arranged on the insulating rod, the laser ranging mechanism comprises a box body and a circuit board assembly, the box body is movably connected to the sliding rail, a measuring assembly is arranged between the box body and the sliding rail, and a laser ranging assembly is arranged on the outer side wall of the box body; the device has the advantages that the vertical distance from the laser ranging assembly to the cable is measured through the laser ranging assembly on the box body, the measuring assembly for measuring the horizontal displacement of the box body is arranged between the box body and the sliding rail, so that the moving distance of the laser ranging assembly on the sliding rail can be accurately measured while the vertical distance is measured, the circuit board assembly receives at least three groups of vertical distances obtained by the laser ranging assembly, and the horizontal displacement measured by the measuring assembly is used to calculate the bending radius of the cable, the device is convenient to carry, and the measuring function is more accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to a laser ranging type cable bending radius measuring device. BACKGROUND

[0002] The key factor for safe operation of the cable is the good degree of its insulation and the uniformity of the internal electric field distribution. The cable bending radius is the main index for guaranteeing the insulation performance of the cable in laying construction and operation. The so-called bending radius is that the curved cable is approximately regarded as a circular arc in engineering, and the radius of the circle where the circular arc is located is the bending radius of the curved cable. If the bending radius of the cable is less than the specified value in laying construction or operation, it will directly lead to the damage of its structure, and the mechanical damage inside the conductor cannot be seen because it is covered by the power cable insulation layer, and even the loop resistance, insulation and leakage tests are difficult to find defects, and in operation, the cable insulation strength is reduced due to overheating at the damaged place, and eventually the insulation is broken down, resulting in safety and quality accidents. In the laying process of high-voltage cables, it is necessary to strictly follow the national standards and relevant regulations to ensure the normal function of high-voltage cables. At present, the personnel of the operation and maintenance department in the cable laying construction process can only judge whether the cable bending radius meets the operation regulations according to experience, and cannot give accurate values. A high-voltage cable bending radius measuring tool has been disclosed, which comprises a horizontal ruler and an elastic rod, the fixed end of the elastic rod is fastened and installed with one end of the elastic rod, and the moving end of the elastic rod is movably installed in the slide made on the surface of the horizontal ruler. When the moving end of the elastic rod is subjected to external force acting on the fixed end, the elastic rod will naturally form a circular arc with changing radius. The horizontal ruler with the turning radius is connected with the elastic rod, the external force is applied to the moving end of the elastic rod to make the elastic rod form a circular arc coinciding with the high-voltage cable, and the turning radius of the cable circular arc can be obtained by directly reading the scale on the horizontal ruler intersecting with the elastic rod. Although this method can measure the radius of the cable, the entire tool is made of rod-shaped material, which is large in size, heavy in weight, inconvenient to carry, and in addition, due to its fixed structure, it cannot adapt to occasions with large range change. SUMMARY

[0003] The present application aims to solve the problem of the large size of the existing cable bending radius measuring tool, which is not conducive to carrying, and proposes a laser ranging type cable bending radius measuring device. The vertical distance obtained by the laser ranging assembly and the horizontal displacement measured by the measuring assembly are used to calculate the bending radius of the cable, which not only effectively reduces the size of the overall measuring device, facilitates carrying, but also improves the accuracy of the measurement.

[0004] In order to solve the above technical problems, the present application is realized by the following technical scheme: a laser ranging type cable bending radius measuring device, comprising an insulating rod and a laser ranging mechanism, both ends of the insulating rod are provided with a clamping jaw for fixing the cable, a sliding rail is arranged on the insulating rod, the laser ranging mechanism comprises a box body and a circuit board assembly arranged in the box body, the box body is movably connected to the sliding rail, a measuring assembly for measuring the horizontal displacement of the box body is arranged between the box body and the sliding rail, a laser ranging assembly connected to the circuit board assembly is arranged on the outer side wall of the box body, a display screen is arranged on the circuit board assembly, the measuring assembly is connected to the circuit board assembly, the circuit board assembly receives at least three groups of vertical distances obtained by the laser ranging assembly and the horizontal displacement measured by the measuring assembly to calculate the bending radius of the cable, and the display screen is used for real-time display.

[0005] Preferably, the box body is provided with a first button, a second button, a third button and a fourth button, the first button is used to start the measurement work, the second button is used to eliminate the data and restart the measurement, the third button is used to save the measurement data, and the fourth button is used to realize the zero reset of the measuring assembly.

[0006] Preferably, the laser ranging assembly comprises a bracket, a laser and a camera, a cavity is arranged on the bracket, a horizontal partition plate is arranged in the cavity, the horizontal partition plate divides the cavity into a first mounting cavity and a second mounting cavity, the laser is mounted in the first mounting cavity, the camera is mounted in the second mounting cavity, and the bracket is arranged on the box body.

[0007] Preferably, the sliding rail comprises a first sliding block, a second sliding block and a guide rail arranged between the first sliding block and the second sliding block, the first sliding block and the second sliding block are movably connected to the insulating rod, and a third sliding block matched with the guide rail is arranged on the box body.

[0008] Preferably, the measuring assembly comprises a fixed grid and an output chip, the fixed grid is fixedly connected to the upper surface of the guide rail, and the output chip is arranged on the third sliding block and in contact with the upper surface of the fixed grid.

[0009] Preferably, the lower end of the guide rail is provided with a reinforcing steel plate.

[0010] Preferably, steps for fixing the guide rail are arranged on the first sliding block and the second sliding block.

[0011] Preferably, the box body comprises a lower box body and an upper box body, the circuit board assembly is arranged between the lower box body and the upper box body, a battery is arranged on the lower box body or the upper box body, and the measuring assembly, the laser ranging assembly and the circuit board assembly are connected to the battery.

[0012] Preferably, a connecting structure is arranged between the clamping jaw and the insulating rod, and the connecting structure comprises a connecting block and a connecting hole connected with each other.

[0013] Preferably, the connecting block is arranged on the clamping jaw and extends horizontally, and the connecting hole is arranged on the insulating rod and the insulating rod is provided with a locking screw.

[0014] In conclusion, the laser ranging cable bending radius measuring device has the advantages that: the whole device is clamped on the cable by the clamping jaws at both ends of the insulating rod, then the vertical distance from the laser ranging assembly to the cable is measured by the laser ranging assembly on the box body, the sliding box is slid to make the laser ranging assembly measure the vertical distance of at least three points in turn, because the sliding track is arranged on the insulating rod, the horizontal displacement of the measuring box is measured by the measuring assembly between the box body and the sliding track, so the moving distance of the laser ranging assembly on the sliding track is accurately measured at the same time of measuring the vertical distance, and the two are not interfered with each other, the measuring accuracy is greatly improved, the circuit board assembly receives at least three groups of vertical distances obtained by the laser ranging assembly and the horizontal displacement measured by the measuring assembly to calculate the bending radius of the cable, and the measuring result can be displayed on the display screen for reading by the detection personnel, so the whole laser ranging cable bending radius measuring device has the functions of small size, light weight, convenient carrying and high measuring accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0015] The application will be further described below with reference to the drawings:

[0016] Figure 1 Fig. 1 is a structural schematic view of the laser ranging cable bending radius measuring device of the application;

[0017] Figure 2 Fig. 2 is a structural schematic view of the laser ranging mechanism in the application;

[0018] Figure 3 Fig. 3 is a structural schematic view of the sliding track in the application;

[0019] Figure 4 Fig. 4 is a structural schematic view of the laser ranging assembly in the application.

[0020] Reference signs:

[0021] 1 insulating rod, 2 laser ranging mechanism, 3 clamping jaw, 4 sliding rail, 41 first sliding block, 42 second sliding block, 43 guide rail, 44 reinforcing steel plate, 45 step, 5 box body, 51 first button, 52 second button, 53 third button, 54 fourth button, 55 third sliding block, 56 lower box body, 57 upper box body, 58 battery, 6 circuit board assembly, 7 measurement assembly, 71 fixed grid, 72 output chip, 8 laser ranging assembly, 81 bracket, 82 laser, 83 camera, 84 horizontal partition, 85 first mounting cavity, 86 second mounting cavity, 9 display screen, 10 connecting structure, 11 locking screw. DETAILED DESCRIPTION

[0022] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , a laser ranging type cable bending radius measuring device, comprising an insulating rod 1 and a laser ranging mechanism 2, both ends of the insulating rod 1 are provided with a clamping jaw 3 for fixing the cable, the clamping jaw 3 is prior art, and the embodiment will not be described in detail, the insulating rod 1 is provided with a sliding rail 4, the laser ranging mechanism 2 comprises a box body 5 and a circuit board assembly 6 arranged in the box body 5, the circuit board assembly 6 is also prior art, and the embodiment will not be described in detail, the box body 5 is movably connected to the sliding rail 4, a measurement assembly 7 for measuring the horizontal displacement of the box body 5 is arranged between the box body 5 and the sliding rail 4, a laser ranging assembly 8 connected to the circuit board assembly 6 is arranged on the outer side wall of the box body 5, a display screen 9 is arranged on the circuit board assembly 6, the measurement assembly 7 is connected to the circuit board assembly 6, the circuit board assembly 6 receives at least three groups of vertical distances obtained by the laser ranging assembly 8 and the horizontal displacement measured by the measurement assembly 7 to calculate the bending radius of the cable, and the calculation result is displayed in real time on the display screen 9.

[0023] The entire laser ranging type cable bending radius measuring device is clamped on the cable through the clamping jaws 3 at both ends of the insulating rod 1, then the vertical distance from the laser ranging assembly 8 to the cable is measured through the laser ranging assembly 8 on the box body 5, since the insulating rod 1 is provided with the sliding rail 4, the box body 5 can be slid to make the laser ranging assembly 8 measure the vertical distance of at least three points in turn, and since the measurement assembly 7 for measuring the horizontal displacement of the box body 5 is arranged between the box body 5 and the sliding rail 4, the moving distance of the laser ranging assembly 8 on the sliding rail 4 can be accurately measured while the vertical distance is measured, and the two do not interfere with each other, which greatly improves the measurement accuracy, the circuit board assembly 6 receives at least three groups of vertical distances obtained by the laser ranging assembly 8 and the horizontal displacement measured by the measurement assembly 7 to calculate the bending radius of the cable, and the measurement result can be displayed on the display screen 9, which is convenient for detection personnel to read, so that the entire laser ranging type cable bending radius measuring device has the functions of small size, light weight, convenient carrying and accurate measurement.

[0024] The box 5 is provided with a first button 51, a second button 52, a third button 53 and a fourth button 54, the first button 51 is used to start the measurement work, the second button 52 is used to eliminate data and restart the measurement, the third button 53 is used to save the measurement data, and the fourth button 54 is used to realize the zero reset of the measurement assembly 7, which can simplify the operation process, realize the independent setting of each work, and further improve the measurement efficiency. In the embodiment, the first button 51, the second button 52, the third button 53 and the fourth button 54 can be distinguished by setting marks on the box 5, or they can be distinguished by setting the positions of the first button 51, the second button 52, the third button 53 and the fourth button 54 on the box 5.

[0025] The laser ranging assembly 8 comprises a bracket 81, a laser 82 and a camera 83, the bracket 81 is provided with a cavity, a horizontal partition plate 84 is arranged in the cavity, the horizontal partition plate 84 divides the cavity into a first mounting cavity 85 and a second mounting cavity 86, the laser 82 is mounted in the first mounting cavity 85, and the camera 83 is mounted in the second mounting cavity 86. The bracket 81 is arranged on the box 5, so that the laser 82 and the camera 83 form an installation whole with the bracket 81, which simplifies the installation space of the entire laser ranging assembly 8 on the box 5. In specific use, the laser 82 emits a laser beam to the wire, and the camera 83 receives the reflected light, thereby accurately obtaining the distance from the laser 82 to the cable. The first mounting cavity 85 and the second mounting cavity 86 enable the laser 82 and the camera 83 to be independently mounted on the bracket 81, and do not interfere with each other in operation.

[0026] The sliding rail 4 comprises a first sliding block 41, a second sliding block 42 and a guide rail 43 arranged between the first sliding block 41 and the second sliding block 42, the first sliding block 41 and the second sliding block 42 are both slidingly connected to the insulating rod 1, and the box 5 is provided with a third sliding block 55 matched with the guide rail 43. The third sliding block 55 slides on the guide rail 43 to realize the sliding of the box 5, which can ensure the straightness of the movement of the box 5. The first sliding block 41 and the second sliding block 42 can adjust the installation position of the guide rail 43 on the insulating rod 1 according to different measurement requirements, so as to meet different measurement requirements. The first sliding block 41 and the second sliding block 42 in the embodiment have the same structure, which specifically comprises a body and a screw arranged on the body. The body is provided with a through hole connected with the insulating rod 1, one end of the body is provided with an opening communicated with the through hole, and the screw is arranged at the opening. When adjusting, the body is only needed to slide on the insulating rod 1 by loosening the screw, and after adjustment, the first sliding block 41 and the second sliding block 42 can be locked on the insulating rod 1 by locking the screw 11, which is convenient for locking the first sliding block 41 and the second sliding block 42.

[0027] The measuring assembly 7 comprises a fixed grid 71 and an output chip 72, the fixed grid 71 is fixedly connected to the upper surface of the guide rail 43, the output chip 72 is arranged on the third sliding block 55, and the output chip 72 is in contact with the upper surface of the fixed grid 71, so that the output chip 72 moves stably on the fixed grid 71, and accurate measurement of horizontal displacement is realized; in the embodiment, the upper surface of the guide rail 43 is provided with a groove, and the fixed grid 71 is fixed in the groove through double-sided adhesive. The lower end of the guide rail 43 is provided with a reinforcing steel plate 44, which can reinforce the guide rail 43 and prolong the service life of the guide rail 43. The first sliding block 41 and the second sliding block 42 are both provided with a step 45 for fixing the guide rail 43, which can increase the installation area of the guide rail 43 and improve the straightness of the installation of the guide rail 43, so as to ensure the stability of the third sliding block 55 during sliding.

[0028] The box body 5 comprises a lower box body 56 and an upper box body 57, the circuit board assembly 6 is arranged between the lower box body 56 and the upper box body 57, the lower box body 56 or the upper box body 57 is provided with a battery 58, the measuring assembly 7, the laser ranging assembly 8 and the circuit board assembly 6 are connected with the battery 58, so that the circuit board assembly 6 can be quickly installed and fixed, and the battery 58 can supply power to the measuring assembly 7, the laser ranging assembly 8 and the circuit board assembly 6, so as to ensure the continuous operation of the measuring assembly 7, the laser ranging assembly 8 and the circuit board assembly 6.

[0029] The connecting structure 10 is arranged between the clamping jaw 3 and the insulating rod 1, the connecting structure 10 comprises a connecting block and a connecting hole connected with each other, the connecting block is arranged on the clamping jaw 3 and extends horizontally, and the connecting hole is arranged on the insulating rod 1, and the insulating rod 1 is provided with a locking screw 11, so that the connecting strength between the clamping jaw 3 and the insulating rod 1 is improved, and the clamping jaw 3 and the insulating rod 1 can be conveniently installed and disassembled; alternatively, the connecting block can be arranged on the insulating rod 1, the connecting hole can be arranged on the clamping jaw 3, and the locking screw 11 can be arranged to lock the connecting block in the connecting hole, so as to further improve the fixing quality of the clamping jaw 3 and the insulating rod 1.

[0030] The above only describes specific embodiments of the present application, but the technical features of the present application are not limited to this, any person skilled in the art can make changes or modifications in the field of the present application, which are covered by the patent scope of the present application.

Claims

1. A laser range finder cable bend radius measuring device characterized by: The utility model provides an insulating rod and laser ranging mechanism, both ends of the insulating rod are equipped with a fixed cable's clamping jaw, be equipped with sliding rail on the insulating rod, the laser ranging mechanism includes box and the circuit board assembly of setting in the box, the box is movably connected on the sliding rail, be equipped with the measuring assembly of measuring the horizontal displacement of box between the box and sliding rail, the outside wall of box is equipped with the laser ranging assembly connected with circuit board assembly, be equipped with display screen on the circuit board assembly, the measuring assembly is connected with circuit board assembly, and circuit board assembly receives at least 3 groups of vertical distance of laser ranging assembly acquisition, and the horizontal displacement of measuring assembly measurement calculates the bending radius of cable, and through display screen carries out real -time display, the laser ranging assembly includes support, laser and camera, be equipped with cavity on the support, be equipped with horizontal baffle in the cavity, the horizontal baffle divides the cavity into first installation cavity and second installation cavity, the laser is installed in the first installation cavity, the camera is installed in the second installation cavity, the support sets up on the box, the sliding rail includes first sliding block, second sliding block and sets up between first sliding block and second sliding block's guide rail, first sliding block and second sliding block are all slidingly connected on the insulating rod, be equipped with the third sliding block of cooperation with guide rail on the box, the measuring assembly includes fixed grid and output chip, the fixed grid is fixedly connected on the upper surface of guide rail, the output chip sets up on the third sliding block, and output chip is in contact with the upper surface of fixed grid.

2. A laser range finder cable bend radius measuring device according to claim 1, wherein: The box is provided with a first button, a second button, a third button and a fourth button, the first button is used to start the measurement work, the second button is used to eliminate data and restart the measurement, the third button is used to save the measurement data, and the fourth button is used to realize the zero reset of the measuring assembly.

3. The laser range finder cable bend radius measuring device of claim 1, wherein: The lower end of the guide rail is provided with a reinforcing steel plate.

4. The laser range finder cable bend radius measuring device of claim 1, wherein: The first sliding block and the second sliding block are both provided with a step for fixing the guide rail.

5. The laser range finder cable bend radius measuring device of claim 1, wherein: The box includes a lower box and an upper box, the circuit board assembly is arranged between the lower box and the upper box, the lower box or the upper box is provided with a battery, and the measuring assembly, the laser ranging assembly and the circuit board assembly are connected with the battery.

6. A laser range finder cable bend radius measuring device according to claim 1, wherein: The clamping jaw and the insulating rod are provided with a connecting structure, and the connecting structure includes a connecting block and a connecting hole connected with each other.

7. A laser range finder cable bend radius measuring device according to claim 6, wherein: The connecting block is arranged on the clamping jaw and extends horizontally, the connecting hole is arranged on the insulating rod, and the insulating rod is provided with a locking screw.

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