A cable distance measuring device and a measuring method

Abstract

The application aims to provide a cable distance measuring device and a measuring method, and relates to the technical field of distance measurement. The device comprises a support frame, a driving mechanism, a tape measure mechanism and a measuring mechanism. The driving mechanism is arranged on the outer wall of the support frame and connected with a main cable. The support frame is provided with a first fixing hole and a second fixing hole. A first bearing is arranged in the first fixing hole. The first fixing hole and the second fixing hole are arranged in an annular array. The first fixing holes in adjacent rows are arranged alternately. The tape measure mechanism comprises a winding drum, a tape and a plug rod. The winding drum is sleeved on the first bearing. One end of the tape is connected with the winding drum, and the other end is connected with the plug rod. The plug rod is inserted into the second fixing hole. The measuring mechanism is connected with the tape measure mechanism, and the distance and the inclination angle between the main cable and the corresponding target cable are measured. A plurality of tape measure mechanisms are connected with different target cables. In one walking process, the distances between the multiple cables are measured by the tape measure mechanisms, and the limitation that the existing device can only obtain the data of one pair of cables in one walking process is solved.

Description

Technical Field

[0001] This invention relates to the field of distance measurement technology, specifically to a cable distance measuring device and method. Background Technology

[0002] Currently, in the operation, maintenance, and inspection of overhead power lines, measuring the spatial position of power cables is a crucial step in ensuring power grid safety. Existing measuring devices based on walking robots are mounted on a cable via a walking mechanism, and then use a swingable measuring mechanism to hook onto an adjacent cable, thereby measuring the horizontal distance and vertical height difference between the two cables.

[0003] However, with the increasing complexity of power grid architecture, especially in areas with dense substations, sections with multi-circuit towers, and long-span transmission lines, cables are often arranged in multiple parallel, intersecting, or spatially distributed configurations (e.g., multi-phase conductors, ground wires, and fiber optic composite lines erected on the same tower). Maintenance personnel not only need to understand the parameters of adjacent cables but also need to grasp the spatial relative positions of multiple cables to determine whether there is a risk of phase-to-phase discharge due to wind deflection or icing.

[0004] However, when facing three or more cables, existing measuring devices can only acquire data for one pair of cables in a single walk. If data for other cable pairs is desired, repeated disassembly and reassembly, adjustment of the measurement direction, or multiple walks are required, which is inefficient. Summary of the Invention

[0005] The purpose of this invention is to provide a cable distance measuring device and method. The technical problem to be solved is that it is impossible to simultaneously measure the spatial distance and height difference of multiple cables on a single walking path.

[0006] This invention is achieved through the following technical solution:

[0007] The first aspect provides a cable distance measuring device, including a support frame, a drive mechanism, a tape measure mechanism, and a measuring mechanism;

[0008] The aforementioned drive mechanism is located on the outer wall of the support frame. This drive mechanism is used to connect to the main cable and drive the support frame to move on the main cable.

[0009] The aforementioned support frame includes a first region having a plurality of first fixing holes and a second region having a plurality of second fixing holes; a first bearing is fitted inside the first fixing holes, and the first fixing holes are arranged in a circular array, with adjacent rows of the first fixing holes in the circular array within the first region being staggered; the second fixing holes are arranged in a circular array around the first region.

[0010] The aforementioned measuring tape mechanism includes a drum, a ruler strip, and a plug rod. One end of the drum is fitted into a first bearing, and one end of the ruler strip is connected to the drum, while the other end is connected to the plug rod, which is used to insert into a second fixing hole.

[0011] The aforementioned measuring mechanism is connected to the measuring tape mechanism. This measuring mechanism is used to measure the actual distance between the main cable and the corresponding target cable, as well as the actual inclination angle of the measuring tape.

[0012] The first region has a first fixing hole arranged in a ring array with adjacent rows staggered. The second fixing hole is arranged in a ring array around the first region, providing a reasonable layout for installing multiple measuring tape mechanisms. Multiple measuring tape mechanisms can be installed on the support frame at the same time, with each measuring tape mechanism corresponding to a target cable.

[0013] The aforementioned measuring tape mechanism has one end of its drum fitted into the first bearing, and one end of the measuring strip connected to the drum, while the other end is connected to an insert rod inserted into the second fixing hole. The measuring strip is fitted onto the target cable, and rotating the drum causes the measuring strip to wind around it, changing the strip's extension length. Multiple measuring tape mechanisms can be connected to different target cables. During a single journey, each measuring tape mechanism moves along the main cable with the support frame, and each measuring tape mechanism can simultaneously measure the distance between the main cable and multiple target cables, overcoming the limitation of existing devices that can only acquire data for one pair of cables per journey.

[0014] Furthermore, an auxiliary wheel is provided at one end of the ruler strip near the insertion rod. The auxiliary wheel has a first central hole in its axial direction, through which the ruler strip passes. The auxiliary wheel has a groove in its radial direction, which is used to connect the target cable.

[0015] The aforementioned auxiliary wheel facilitates the movement of the ruler strip along with the support frame during the measurement process. When the support frame moves, the auxiliary wheel rolls on the target cable, reducing the tension on the ruler strip and making the tension applied by the ruler strip on the target cable more stable, thereby improving the measurement accuracy. The principle is that when the tension increases, the deformation of the ruler strip also increases, which will reduce the measurement accuracy.

[0016] Furthermore, the aforementioned measuring mechanism includes an encoder, the output of which is connected to the drum, and the encoder records the rotation angle of the drum.

[0017] The encoder output is connected to the drum to record its rotation angle. By acquiring the encoder circumference and the real-time collected rotation angle, the actual distance between the main cable and the corresponding target cable is calculated. Combined with the support frame and measuring tape mechanism, multiple encoders can correspond to multiple measuring tape mechanisms, simultaneously acquiring distance data between multiple cables and the main cable during a single journey, achieving synchronous measurement of spatial distance.

[0018] Furthermore, the aforementioned measuring mechanism also includes an angle sensor, which is located beside the drum and measures the actual tilt angle of the support frame extending from the ruler strip.

[0019] The aforementioned angle sensors measure the actual tilt angle of the ruler strip extending from the support frame. Combining the measured distance data, the height difference between the main cable and the corresponding target cable is calculated based on the actual tilt angle of the ruler strip. Multiple angle sensors, in conjunction with multiple measuring tape mechanisms, can simultaneously obtain height difference data between multiple cables and the main cable along a single travel path, achieving synchronous measurement of height differences.

[0020] Furthermore, a tension sensor is provided at one end of the ruler strip with the insert rod, and the tension sensor collects the actual tension of the ruler strip.

[0021] The actual tension collected by the aforementioned tension sensor is used to determine the stress on the ruler strip. When the actual tension is not equal to the initial tension, a control command is generated to drive the drum to rotate, ensuring that the ruler strip is in a suitable measurement state, maintaining a constant deformation of the ruler strip, improving the accuracy and stability of the measurement, and helping to simultaneously measure the spatial distance and height difference of multiple cables on a single travel path.

[0022] Furthermore, the aforementioned drum is connected to a driver, which is connected to a tension sensor. Based on the actual tension collected by the tension sensor, the driver controls the drum to rotate.

[0023] Adjust the drum rotation according to the stress on the ruler strip to ensure proper tension of the ruler strip during measurement and improve measurement accuracy.

[0024] A second aspect provides a method for measuring cable distance, which is implemented using the aforementioned measuring device; the method includes the following steps:

[0025] Obtain a cable distribution map, and determine the main cable and target cable based on the cable distribution map;

[0026] The aforementioned drive mechanism is fitted onto the main cable, and a corresponding number of measuring tape mechanisms are assembled based on the number of target cables. The auxiliary wheels of each measuring tape mechanism are then connected to each target cable.

[0027] The initial angle of the encoder and the initial tension of the tension sensor are preset;

[0028] The actual tension of the ruler strip is collected in real time by the aforementioned tension sensor, and it is determined whether the actual tension is equal to the initial tension. When the actual tension is not equal to the initial tension, a control command is generated and executed by the aforementioned driver.

[0029] The perimeter of the encoder is obtained, and the rotation angle of the drum is collected in real time by the encoder. Based on the initial angle and the rotation angle, the actual rotation angle of the encoder is determined. Based on the actual rotation angle and the perimeter of the encoder, the actual distance between the main cable and the corresponding target cable is determined.

[0030] The actual tilt angle of the ruler strip is collected in real time by the aforementioned angle sensor. Based on the actual tilt angle and the actual distance between the main cable and the corresponding target cable, the height difference between the main cable and the corresponding target cable is determined.

[0031] By obtaining the cable distribution map to determine the main cable and target cable, the drive mechanism is fitted onto the main cable, and the corresponding number of measuring tape mechanisms are assembled and connected to the target cable. After preset initial parameters, data is collected in real time using tension sensors, encoders, angle sensors, etc. during one walking process. The actual distance and height difference between the main cable and the corresponding target cable are calculated, realizing the simultaneous measurement of spatial distance and height difference of multiple cables on one walking path, thus improving measurement efficiency.

[0032] Furthermore, after obtaining the actual distance between the main cable and the corresponding target cable, it is necessary to correct this actual distance. The steps include:

[0033] Obtain the elastic coefficient of the ruler strip, and determine the deformation length of the ruler strip based on the elastic coefficient and the actual tensile force.

[0034] Based on the deformation length and actual distance of the ruler strip, the corrected distance is obtained.

[0035] After obtaining the actual distance, the elastic coefficient of the ruler strip is acquired. Based on the elastic coefficient and the actual tension, the deformation length of the ruler strip is determined, and thus the corrected distance is obtained. The influence of the ruler strip's deformation under force on the measurement results is considered, further improving the accuracy of distance measurement and ensuring the reliability of simultaneously measuring the spatial distance and height difference of multiple cables on a single walking path.

[0036] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0037] The first region has a first fixing hole arranged in a ring array with adjacent rows staggered. The second fixing hole is arranged in a ring array around the first region, providing a reasonable layout for installing multiple measuring tape mechanisms. Multiple measuring tape mechanisms can be installed on the support frame at the same time, with each measuring tape mechanism corresponding to a target cable.

[0038] The aforementioned measuring tape mechanism has one end of its drum fitted into the first bearing, and one end of the measuring strip connected to the drum, while the other end is connected to an insert rod inserted into the second fixing hole. The measuring strip is fitted onto the target cable, and rotating the drum causes the measuring strip to wind around it, changing the strip's extension length. Multiple measuring tape mechanisms can be connected to different target cables. During a single journey, each measuring tape mechanism moves along the main cable with the support frame, and each measuring tape mechanism can simultaneously measure the distance between the main cable and multiple target cables, overcoming the limitation of existing devices that can only acquire data for one pair of cables per journey. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0040] Figure 1 A schematic diagram of a support frame with an internal measuring tape mechanism and an external driver and encoder.

[0041] Figure 2 A schematic diagram of a support frame with an internal measuring tape mechanism and angle sensor, and an external driver, encoder, and drive mechanism.

[0042] Figure 3 This is a schematic diagram of the structure after the gear is connected to the moving wheel;

[0043] Figure 4 This is a schematic diagram of the planar arrangement of the first and second fixing holes on the support plate;

[0044] Figure 5 A schematic diagram of the planar structure after a measuring tape mechanism is fitted onto a support plate;

[0045] Figure 6 A schematic diagram of the planar structure after the auxiliary wheel is connected to the target cable, in order to fit a measuring tape mechanism onto the support plate;

[0046] Figure 7 This is a schematic diagram of the planar structure when the auxiliary wheel is connected to the target cable.

[0047] The attached diagram shows the markings and corresponding component names:

[0048] 1. Support frame; 11. First fixing hole; 12. Second fixing hole; 13. First area; 14. Second area; 15. First bearing; 2. Measuring tape mechanism; 21. Roller; 22. Measuring strip; 23. Insert rod; 24. Auxiliary wheel; 25. Groove; 3. Drive mechanism; 31. Motor; 32. Main gear; 33. Driven gear; 34. Moving wheel; 4. Encoder; 5. Support plate; 6. Driver; 7. Angle sensor; 8. Tension sensor. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0050] First embodiment:

[0051] A cable distance measuring device includes a support frame 1, a drive mechanism 3, a measuring tape mechanism 2, and a measuring mechanism; combined with Figure 1 and Figure 2 The aforementioned support frame 1 can be constructed by connecting two support plates with bolts.

[0052] The aforementioned drive mechanism 3 is installed on the outer wall of the support frame 1. This drive mechanism 3 is used to connect to the main cable and drive the support frame 1 to move along the main cable. The drive mechanism 3 comprises a motor 31, a main gear 32, a driven gear 33, and a moving wheel 34. Figure 2 and Figure 3 The aforementioned main gear 32 is fixed on the output shaft of the motor 31 and rotates with the output shaft of the motor 31. The driven gear 33 meshes with the main gear 32, and the movable wheel 34 is fixed on one side of the driven gear 33. The movable wheel 34 has a recess in its radial direction that adapts to the main cable. The recess is engaged in the main cable, allowing the movable wheel 34 to roll along the main cable. In addition, to prevent the movable wheel 34 from slipping off, a corresponding abutment 5 can be provided on the support frame 1, with the abutment 5 facing the recess. This does not interfere with the rolling of the movable wheel 34, and also prevents the movable wheel 34 from slipping off the main cable.

[0053] The aforementioned support frame 1 includes a first region 13 with a plurality of first fixing holes 11 and a second region 14 with a plurality of second fixing holes 12; a first bearing 15 is fitted inside the first fixing holes 11, and the first fixing holes 11 are arranged in a circular array, with adjacent rows of the first fixing holes 11 in the first region 13 being staggered; the second fixing holes 12 are arranged in a circular array around the first region 13, combined with... Figure 4 ;

[0054] The aforementioned measuring tape mechanism 2 includes a drum 21, a strip 22, and a rod 23. One end of the drum 21 is fitted into the first bearing 15. One end of the strip 22 is connected to the drum 21, and the other end is connected to the rod 23. The rod 23 is used to insert into the second fixing hole 12. Figure 5 and Figure 6 ;

[0055] The aforementioned measuring mechanism is connected to the measuring tape mechanism 2. This measuring mechanism is used to measure the actual distance between the main cable and the corresponding target cable, as well as the actual inclination angle of the measuring tape 22. Figure 1 , Figure 2 , Figure 5 and Figure 6 .

[0056] The first region 13 has first fixing holes 11 arranged in a ring array with adjacent rows staggered, and second fixing holes 12 arranged in a ring array around the first region 13, providing a reasonable layout for installing multiple measuring tape mechanisms 2. Multiple measuring tape mechanisms 2 can be installed on the support frame 1 at the same time, and each measuring tape mechanism 2 corresponds to a target cable.

[0057] The aforementioned measuring tape mechanism 2 has one end of its drum 21 fitted inside the first bearing 15, and one end of its measuring strip 22 connected to the drum 21, while the other end is connected to an insert rod 23, which is inserted into the second fixing hole 12. The measuring strip 22 is fitted onto the target cable, and rotating the drum 21 causes the measuring strip 22 to wrap around it, changing the extension length of the measuring strip 22. Multiple measuring tape mechanisms 2 can be connected to different target cables respectively. During a single journey, each measuring tape mechanism 2 moves along the main cable with the support frame 1, and each measuring tape mechanism 2 can simultaneously measure the distance between the main cable and multiple target cables, overcoming the limitation of existing devices that can only acquire data for one pair of cables per journey.

[0058] Second embodiment:

[0059] Based on the first embodiment, since the ruler strip 22 deforms under force, the deformation of the ruler strip 22 increases with increasing tension, which reduces measurement accuracy. Therefore, an auxiliary wheel 24 is provided at the end of the ruler strip 22 near the insertion rod 23, in conjunction with... Figure 5 and Figure 6 The auxiliary wheel 24 has a first central hole in its axial direction, through which the ruler strip 22 passes. The first central hole has a diameter that is larger at both ends and smaller in the middle, and the surface that contacts the ruler strip 22 is arc-shaped, which further reduces the pulling of the ruler strip 22 when it rotates in the first central hole.

[0060] The aforementioned auxiliary wheel 24 has a radially provided groove 25, which is used to connect the target cable, in conjunction with... Figure 7 .

[0061] The aforementioned auxiliary wheel 24 facilitates the movement of the ruler strip 22 along with the support frame 1 during the measurement process. When the support frame 1 moves, the auxiliary wheel 24 rolls on the target cable, reducing the pulling force on the ruler strip 22 and making the tension applied by the ruler strip 22 on the target cable more stable, thereby improving the measurement accuracy.

[0062] Third embodiment:

[0063] Based on the first embodiment, the measuring mechanism includes an encoder 4, the output end of which is connected to the drum 21, in conjunction with... Figure 1 and Figure 2 The encoder 4 is fixed on the support frame 1, and the encoder 4 records the rotation angle of the drum 21.

[0064] The output of the encoder 4 is connected to the drum 21 to record the rotation angle of the drum 21. By acquiring the circumference of the encoder 4 and the real-time acquired rotation angle, the actual distance between the main cable and the corresponding target cable is calculated. Combined with the support frame 1 and the measuring tape mechanism 2, multiple encoders 4 can correspond to multiple measuring tape mechanisms 2 respectively, and the distance data between multiple cables and the main cable can be acquired simultaneously during one travel, realizing synchronous measurement of spatial distance.

[0065] Fourth embodiment:

[0066] Based on any of the above embodiments, the measuring mechanism further includes an angle sensor 7, combined with... Figure 1 and Figure 2 The aforementioned angle sensor 7 is located on the side of the drum 21, and measures the actual tilt angle of the support frame 1 extending from the ruler 22.

[0067] The aforementioned angle sensor 7 measures the actual tilt angle of the ruler strip 22 extending from the support frame 1. Combining the measured distance data, the height difference between the main cable and the corresponding target cable is calculated based on the actual tilt angle of the ruler strip 22. Multiple angle sensors 7, in conjunction with multiple measuring tape mechanisms 2, can simultaneously obtain height difference data between multiple cables and the main cable along a single travel path, achieving synchronous measurement of height differences.

[0068] Fifth embodiment:

[0069] Based on any of the above embodiments, the ruler strip 22 is provided with a tension sensor 8 at one end of the insertion rod 23, combined with Figure 5 and Figure 6 The actual tension of the ruler strip 22 is collected by the tension sensor 8. The drum 21 is connected to a driver 6, which can be a stepper motor, and the driver 6 is fixed on the support frame 1. The driver 6 is connected to the tension sensor 8, and the driver 6 drives the drum 21 to rotate based on the actual tension collected by the tension sensor 8. The driver 6 and the encoder 4 are respectively set on opposite sides of the two support plates.

[0070] The actual tension collected by the aforementioned tension sensor 8 is used to determine the stress condition of the ruler strip 22. When the actual tension is not equal to the initial tension, a control command is generated to drive the drum 21 to rotate, ensuring that the ruler strip 22 is in a suitable measurement state, maintaining the constant deformation state of the ruler strip 22, improving the accuracy and stability of the measurement, and helping to simultaneously measure the spatial distance and height difference of multiple cables on a single walking path.

[0071] Sixth embodiment:

[0072] A method for measuring cable distance, the method being implemented using the aforementioned measuring device; the method includes the following steps:

[0073] Obtain the cable distribution map, and determine the main cable and target cable based on the above cable distribution map; you can choose the cable in the middle as the main cable and the other cables as the target cables; or you can consider selecting the main cable and target cable to lock the measurement target.

[0074] The aforementioned drive mechanism is fitted onto the main cable, and a corresponding number of measuring tape mechanisms are assembled based on the number of target cables. The auxiliary wheels of each measuring tape mechanism are then connected to each target cable.

[0075] The initial angle of the encoder and the initial tension of the tension sensor are preset; the initial angle is the selected angle of the encoder when the ruler is not extended, and the initial tension is the tension applied by the ruler to the auxiliary wheel when the ruler is stretched and has not deformed.

[0076] The aforementioned tension sensor collects the actual tension of the ruler strip in real time and determines whether the actual tension is equal to the initial tension. When the actual tension is not equal to the initial tension, a control command is generated and executed by the aforementioned driver. Specifically, when the actual tension is greater than the initial tension, the aforementioned driver controls the drum to rotate, releasing a certain length of the ruler strip, so that the collected actual tension is equal to the initial tension. When the actual tension is less than the initial tension, the aforementioned driver controls the drum to rotate, winding the extended ruler strip of a certain length onto the drum, so that the collected actual tension is equal to the initial tension.

[0077] The circumference of the encoder is obtained, and the rotation angle of the drum is acquired in real time by the encoder. Each rotation of the drum generates n pulses. The encoder records the total number of pulses, and the rotation angle of the drum can be obtained based on the total number of pulses, as shown in the following formula: , This indicates the rotation angle acquired by the encoder; This indicates the total number of pulses recorded by the encoder; This indicates the number of pulses required for one revolution of the drum.

[0078] Based on the initial angle and rotation angle mentioned above, the actual rotation angle of the encoder is determined using the following formula:

[0079] ,in, This indicates the actual rotation angle of the encoder; This indicates the rotation angle acquired by the encoder; This indicates the initial angle of the encoder.

[0080] Based on the actual rotation angle and encoder circumference, the actual distance between the main cable and the corresponding target cable is determined using the following formula: ,in, This indicates the actual distance between the main cable and the corresponding target cable; This indicates the perimeter of the encoder.

[0081] After obtaining the actual distance between the main cable and the corresponding target cable, it is necessary to correct this actual distance. The steps include:

[0082] Obtain the elastic modulus of the ruler strip. Based on the elastic modulus and the actual tensile force, determine the deformation length of the ruler strip using the following formula: , Indicates the length of deformation of the ruler strip; This indicates the actual tensile force on the ruler strip; This indicates the elastic coefficient of the strip.

[0083] Based on the deformation length and actual distance of the ruler strip mentioned above, the corrected distance is obtained using the following formula: , This indicates the corrected distance.

[0084] After obtaining the actual distance, the elastic coefficient of the ruler strip is acquired. Based on the elastic coefficient and the actual tension, the deformation length of the ruler strip is determined, and thus the corrected distance is obtained. The influence of the ruler strip's deformation under force on the measurement results is considered, further improving the accuracy of distance measurement and ensuring the reliability of simultaneously measuring the spatial distance and height difference of multiple cables on a single walking path.

[0085] The actual tilt angle of the ruler strip is collected in real time by the aforementioned angle sensor. Based on the actual tilt angle and the corrected actual distance between the main cable and the corresponding target cable (i.e., the corrected distance), the height difference between the main cable and the corresponding target cable is determined using the following formula: ,in, This indicates the height difference between the main cable and the corresponding target cable; This indicates the actual angle of inclination of the ruler.

[0086] By obtaining the cable distribution map to determine the main cable and target cable, the drive mechanism is fitted onto the main cable, and the corresponding number of measuring tape mechanisms are assembled and connected to the target cable. After preset initial parameters, data is collected in real time using tension sensors, encoders, angle sensors, etc. during one walking process. The actual distance and height difference between the main cable and the corresponding target cable are calculated, realizing the simultaneous measurement of spatial distance and height difference of multiple cables on one walking path, thus improving measurement efficiency.

[0087] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A cable distance measuring device, characterized in that, It includes a support frame (1), a drive mechanism (3), a measuring tape mechanism (2), and a measuring mechanism; The drive mechanism (3) is located on the outer wall of the support frame (1). The drive mechanism (3) is used to connect the main cable and drive the support frame (1) to move on the main cable. The support frame (1) includes a first region (13) with a plurality of first fixing holes (11) and a second region (14) with a plurality of second fixing holes (12); a first bearing (15) is fitted inside the first fixing hole (11), the first fixing holes (11) are arranged in a ring array, and the first fixing holes (11) in adjacent rows of the ring array in the first region (13) are staggered; the second fixing holes (12) are arranged in a ring array around the first region (13); The measuring tape mechanism (2) includes a drum (21), a strip (22) and a plug (23). One end of the drum (21) is sleeved in the first bearing (15). One end of the strip (22) is connected to the drum (21) and the other end is connected to the plug (23). The plug (23) is used to insert into the second fixing hole (12). The measuring mechanism is connected to the measuring tape mechanism (2), which is used to measure the actual distance between the main cable and the corresponding target cable and the actual tilt angle of the tape measure (22).

2. The cable distance measuring device according to claim 1, characterized in that, An auxiliary wheel (24) is provided at one end of the ruler strip (22) near the insertion rod (23). The auxiliary wheel (24) has a first central hole in its axial direction, through which the ruler strip (22) passes. The auxiliary wheel (24) has a groove (25) in its radial direction, which is used to connect the target cable.

3. The cable distance measuring device according to claim 1, characterized in that, The measuring mechanism includes an encoder (4), the output end of which is connected to the drum (21), and the encoder (4) records the rotation angle of the drum (21).

4. The cable distance measuring device according to claim 1, characterized in that, The measuring mechanism also includes an angle sensor (7), which is located on the side of the drum (21) and measures the actual tilt angle of the ruler strip (22) extending out of the support frame (1).

5. The cable distance measuring device according to claim 1, characterized in that, The ruler strip (22) is provided with a tension sensor (8) at one end of the insertion rod (23), and the tension sensor (8) collects the actual tension of the ruler strip (22).

6. The cable distance measuring device according to claim 5, characterized in that, The drum (21) is connected to a driver (6), which is connected to a tension sensor (8). Based on the actual tension collected by the tension sensor (8), the driver (6) controls the drum (21) to rotate.

7. A method for measuring cable distance, characterized in that, The measurement method is implemented using the measuring device according to any one of claims 1 to 6; the measurement method includes the following steps: Obtain a cable distribution map, and determine the main cable and target cable based on the cable distribution map; The drive mechanism (3) is fitted onto the main cable, and a corresponding number of measuring tape mechanisms (2) are assembled based on the number of target cables. The auxiliary wheels (24) of each measuring tape mechanism (2) are connected to each target cable respectively. The initial angle of the encoder (4) and the initial tension of the tension sensor (8) are preset; The actual tension of the ruler strip (22) is collected in real time by the tension sensor (8), and it is determined whether the actual tension is equal to the initial tension. When the actual tension is not equal to the initial tension, a control command is generated and executed by the driver (6). The perimeter of the encoder (4) is obtained, and the rotation angle of the drum (21) is collected in real time by the encoder (4). Based on the initial angle and the rotation angle, the actual rotation angle of the encoder (4) is determined. Based on the actual rotation angle and the perimeter of the encoder (4), the actual distance between the main cable and the corresponding target cable is determined. The actual tilt angle of the ruler strip (22) is collected in real time by the angle sensor (7). Based on the actual tilt angle and the actual distance between the main cable and the corresponding target cable, the height difference between the main cable and the corresponding target cable is determined.

8. The cable distance measurement method according to claim 7, characterized in that, After obtaining the actual distance between the main cable and the corresponding target cable, it is necessary to correct this actual distance. The steps include: Obtain the elastic coefficient of the ruler strip (22), and determine the deformation length of the ruler strip (22) based on the elastic coefficient and the actual tensile force; The corrected distance is obtained based on the deformed length and actual distance of the ruler strip (22).

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