Power transmission line inspection device

Abstract

The utility model belongs to the field of power transmission line inspection, and particularly discloses a power transmission line inspection device which comprises a speed induction type variable resistance mechanism, an installation locking assembly, a hoisting type rack assembly and a guide steel cable. The speed induction type variable resistance mechanism is creatively provided, the speed of the device advancing along the guide steel cable can be inducted through the bottom idler wheels and the bottom rotating shaft, the telescopic brake assembly is automatically started when the advancing speed is too high, and the brake resistance is increased along with increasing of the speed; therefore, the unexpected situation that the traveling speed of the device on the guide steel cable is too high is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of power transmission line inspection, in particular to a power transmission line inspection device. Background Art

[0002] The inspection device generally moves along the transmission line itself, or along the guide cable arranged together with the transmission line. The simpler operation method is to mount it through roller contact, and then pull the detection module forward through an external traction rope. This long-used method is low-cost, simple to operate, and highly practical, but there are still areas for improvement as follows.

[0003] A: When manually pulling, the speed varies. Using the motor will undoubtedly increase the deadweight, which may exceed the upper limit of the load of the transmission line or guide cable, posing a safety risk.

[0004] B: When encountering downhill, or unexpected situations such as the traction rope breaking or falling off, the inspection device will generally lose control and continue to accelerate until it hits an obstacle and stops. Although the probability of this happening is small, once it happens, it will cause great economic losses. Utility Model Content

[0005] In view of the above situation, in order to prevent the device from traveling at too high a speed in the event of a loss of control, the utility model creatively proposes a speed-sensitive variable resistance mechanism, which can sense the speed of the device along the guide steel cable through the bottom roller and the bottom rotating shaft, and automatically activate the telescopic brake assembly when the speed is too fast, and the braking resistance increases with the increase in speed, thereby avoiding the accidental situation of the device traveling too fast on the guide steel cable.

[0006] During normal movement at low speed, the telescopic brake assembly will not generate resistance. When the bottom rolling assembly senses that the travel speed of the device has increased to a certain level, it will generate a force to prevent travel through the telescopic brake assembly. The higher the speed, the greater the resistance, thereby ensuring that the speed will not increase significantly when out of control.

[0007] The technical solution adopted by the utility model is as follows: The utility model proposes a transmission line inspection device, including a speed-sensitive variable resistance mechanism, a mounting locking assembly, a hoisting frame assembly and a guide steel cable, the speed-sensitive variable resistance mechanism is arranged on the hoisting frame assembly, the hoisting frame assembly is rollingly arranged on the guide steel cable, and the mounting locking assembly is lifted and lowered on the speed-sensitive variable resistance mechanism.

[0008] Furthermore, the speed-sensitive variable resistance mechanism includes a detection component, a bottom rolling component, an impeller stirring component and a telescopic brake component, the detection component is arranged on the hanging frame component, the bottom rolling component is arranged on the mounting locking component, the impeller stirring component is slidably arranged on the detection component, and the telescopic brake component is fixedly connected to the detection component.

[0009] The speed-sensitive variable resistance mechanism can sense the speed of the device along the guide cable, automatically start the brake device when the speed is too fast, and the braking resistance increases with the increase of speed, thereby avoiding the accidental situation that the device travels too fast on the guide cable.

[0010] Preferably, the detection assembly comprises a hanging frame and a detection module, the hanging frame is arranged on the hanging frame assembly, a bottom plate is arranged at the bottom of the hanging frame, and the detection module is arranged on the bottom plate.

[0011] The detection module is used to detect various indicators of the transmission cable.

[0012] As a further preferred embodiment of the present invention, the bottom rolling assembly includes a bottom fork frame, a bottom rotating shaft and a bottom roller, the bottom fork frame is arranged on the mounting locking assembly, the bottom rotating shaft is rotatably arranged in the bottom fork frame, and the bottom roller is clamped on the bottom rotating shaft.

[0013] As a further preferred embodiment of the present invention, the impeller stirring assembly includes an impeller body, a liquid storage box and a hydraulic pipeline, the impeller body is snap-fitted at the end of the bottom rotating shaft, a central slot hole portion is provided on the lifting frame, the liquid storage box is snap-fitted and slidably arranged in the central slot hole portion, and the liquid storage box cannot rotate relative to the central slot hole portion.

[0014] The impeller body can rotate with the rotation of the bottom rotating shaft. During normal movement at low speed, the telescopic brake assembly will not generate resistance. When the bottom rolling assembly senses that the travel speed of the device has increased to a certain level, it will generate a force to organize the movement through the telescopic brake assembly. The higher the speed, the greater the resistance, thereby ensuring that the speed will not increase significantly when it is out of control.

[0015] Preferably, the telescopic brake assembly comprises a telescopic sleeve, a telescopic brake member and a return spring. A circular hole portion is also provided on the lifting frame. The telescopic sleeve is fixed in the circular hole portion. The telescopic brake member is slidably engaged in the telescopic sleeve. The return spring is arranged between the telescopic sleeve and the telescopic brake member.

[0016] As a further preferred embodiment of the present invention, the liquid storage box 1 and the telescopic sleeve are connected through a hydraulic pipeline.

[0017] Furthermore, the installation and locking assembly includes an L-shaped lifting slide, a fastening stud and a butterfly nut, the fastening stud is symmetrically arranged on the L-shaped lifting slide, the lifting frame is symmetrically provided with side slot holes, the fastening stud is slidably arranged in the side slot holes, the fastening stud and the butterfly nut are threadedly connected, and the L-shaped lifting slide and the lifting frame are locked and fixed by the fastening stud and the butterfly nut.

[0018] The L-shaped lifting slide plate can be locked and released by the butterfly nut, so that a space for the guide cable to pass through can be reserved when installing and disassembling the device, and the guide cable can be ensured not to fall off the open frame during normal operation.

[0019] Furthermore, the hanging rack assembly includes a roof-type rack and a top rolling assembly, wherein the top rolling assembly is symmetrically arranged below the roof-type rack, and the hanging rack is fixedly connected to one side of the roof-type rack.

[0020] Preferably, the top rolling assembly comprises a top fork frame, a top rotating shaft and a top roller, the top fork frame is fixedly connected to the bottom of the roof-type frame, the top rotating shaft is rotatably arranged in the top fork frame, and the top roller is clamped on the top rotating shaft.

[0021] As a further preferred embodiment of the present invention, the bottom fork frame is fixedly connected to the L-shaped lifting slide plate, and the bottom roller and the top roller are both in rolling contact with the guide steel cable.

[0022] The beneficial effects achieved by the utility model using the above structure are as follows:

[0023] (1) The speed-sensitive variable resistance mechanism can sense the speed of the device along the guide cable, and automatically activate the brake device when the speed is too fast. The braking resistance increases with the increase of speed, thereby avoiding the accidental situation that the device travels too fast on the guide cable.

[0024] (2) Use the detection module to detect various indicators of the transmission cable.

[0025] (3) The impeller body can rotate with the rotation of the bottom shaft. When moving normally at low speed, the telescopic brake assembly will not generate resistance. When the bottom rolling assembly senses that the travel speed of the device has increased to a certain extent, it will generate a force to prevent the device from moving forward through the telescopic brake assembly. The higher the speed, the greater the resistance, thereby ensuring that the speed will not increase significantly when it is out of control.

[0026] (4) The L-shaped lifting slide plate can be locked and released by the butterfly nut, so that space can be left for the guide cable to pass through when installing and disassembling the device, and the guide cable can be ensured not to fall off the open frame during normal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional diagram of a power transmission line inspection device proposed by the utility model;

[0028] Figure 2 This is a front view of a power transmission line inspection device proposed by the utility model;

[0029] Figure 3 This is a left view of a transmission line inspection device proposed by the utility model;

[0030] Figure 4 This is a top view of a transmission line inspection device proposed by the utility model;

[0031] Figure 5 This is a right view of a transmission line inspection device proposed by the utility model;

[0032] Figure 6 for Figure 3 A cross-sectional view along the cutting line AA;

[0033] Figure 7 for Figure 2 A cross-sectional view along the cutting line BB;

[0034] Figure 8 for Figure 6 A partial enlarged view of point Ⅰ in the middle.

[0035] Among them, 1. speed-sensitive variable resistance mechanism, 2. installation locking assembly, 3. lifting frame assembly, 4. guide steel cable, 5. detection assembly, 6. bottom rolling assembly, 7. impeller stirring assembly, 8. telescopic brake assembly, 9. lifting frame, 10. detection module, 11. bottom fork frame, 12. bottom rotating shaft, 13. bottom roller, 14. impeller body, 15. liquid storage box 1, 16. hydraulic pipeline, 17. telescopic sleeve, 18. telescopic brake part, 19. reset spring, 20. circular hole part, 21. center slot hole part, 22. side slot hole part, 23. bottom plate, 24. L-shaped lifting slide plate, 25. fastening studs, 26. butterfly nut, 27. roof-type frame, 28. top rolling assembly, 29. top fork frame, 30. top rotating shaft, 31. top roller.

[0036] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0038] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0039] like Figure 1 to Figure 8 As shown, the utility model proposes a transmission line inspection device, including a speed-sensitive variable resistance mechanism 1, a mounting locking assembly 2, a hoisting frame assembly 3 and a guide steel cable 4, the speed-sensitive variable resistance mechanism 1 is arranged on the hoisting frame assembly 3, the hoisting frame assembly 3 is rollingly arranged on the guide steel cable 4, and the mounting locking assembly 2 is lifted and lowered on the speed-sensitive variable resistance mechanism 1.

[0040] The hanging frame assembly 3 includes a roof-type frame 27 and a top rolling assembly 28 . The top rolling assembly 28 is symmetrically arranged below the roof-type frame 27 . The hanging frame 9 is fixedly connected to one side of the roof-type frame 27 .

[0041] The top rolling assembly 28 includes a top fork frame 29 , a top rotating shaft 30 and a top roller 31 . The top fork frame 29 is fixedly connected to the bottom of the roof-type frame 27 . The top rotating shaft 30 is rotatably disposed in the top fork frame 29 . The top roller 31 is engaged with the top rotating shaft 30 .

[0042] The bottom fork frame 11 is fixedly connected to the L-shaped lifting slide plate 24 , and the bottom roller 13 and the top roller 31 are both in rolling contact with the guide cable 4 .

[0043] The installation locking assembly 2 includes an L-shaped lifting slide plate 24, a fastening stud 25 and a butterfly nut 26. The fastening stud 25 is symmetrically arranged on the L-shaped lifting slide plate 24. The lifting frame 9 is symmetrically provided with side slot hole portions 22. The fastening stud 25 is slidably arranged in the side slot hole portions 22. The fastening stud 25 and the butterfly nut 26 are threadedly connected. The L-shaped lifting slide plate 24 and the lifting frame 9 are locked and fixed by the fastening stud 25 and the butterfly nut 26.

[0044] The L-shaped lifting slide plate 24 can be locked and released by the butterfly nut 26, so that space can be left to allow the guide cable 4 to pass through when installing and disassembling the device, and the guide cable 4 can be ensured not to fall from the open frame during normal operation.

[0045] The speed-sensitive variable resistance mechanism 1 includes a detection component 5, a bottom rolling component 6, an impeller stirring component 7 and a telescopic brake component 8. The detection component 5 is arranged on the hanging frame component 3, the bottom rolling component 6 is arranged on the mounting locking component 2, the impeller stirring component 7 is slidably arranged on the detection component 5, and the telescopic brake component 8 is fixedly connected to the detection component 5.

[0046] The speed-sensitive variable resistance mechanism 1 can sense the speed of the device along the guide cable 4, and automatically activate the braking device when the speed is too fast. The braking resistance increases with the increase of speed, thereby avoiding the accidental situation that the device travels too fast on the guide cable 4.

[0047] The detection assembly 5 includes a hanging frame 9 and a detection module 10 . The hanging frame 9 is arranged on the hanging frame assembly 3 . A bottom plate 23 is arranged at the bottom of the hanging frame 9 . The detection module 10 is arranged on the bottom plate 23 .

[0048] The detection module 10 is used to detect various indicators of the transmission cable.

[0049] The bottom rolling assembly 6 includes a bottom fork frame 11 , a bottom rotating shaft 12 and a bottom roller 13 . The bottom fork frame 11 is arranged on the mounting locking assembly 2 . The bottom rotating shaft 12 is rotatably arranged in the bottom fork frame 11 . The bottom roller 13 is clamped on the bottom rotating shaft 12 .

[0050] The impeller stirring assembly 7 includes an impeller body 14, a liquid storage box 15 and a hydraulic pipeline 16. The impeller body 14 is snap-fitted at the end of the bottom rotating shaft 12. A central slot hole portion 21 is provided on the lifting frame 9. The liquid storage box 15 is snap-fitted and slidably arranged in the central slot hole portion 21. The liquid storage box 15 cannot rotate relative to the central slot hole portion 21.

[0051] The impeller body 14 can rotate with the rotation of the bottom rotating shaft 12. During normal movement at low speed, the telescopic brake assembly 8 will not generate resistance. When the bottom rolling assembly 6 senses that the travel speed of the device has increased to a certain extent, it will generate a force to organize the movement through the telescopic brake assembly 8, and the higher the speed, the greater the resistance, thereby ensuring that the speed will not increase significantly when it is out of control.

[0052] The telescopic brake assembly 8 includes a telescopic sleeve 17, a telescopic brake member 18 and a return spring 19. A circular hole portion 20 is also provided on the lifting frame 9. The telescopic sleeve 17 is fixedly connected in the circular hole portion 20. The telescopic brake member 18 is slidably engaged in the telescopic sleeve 17. The return spring 19 is provided between the telescopic sleeve 17 and the telescopic brake member 18.

[0053] The liquid storage box 15 and the telescopic sleeve 17 are connected through a hydraulic pipeline 16.

[0054] During specific use, the user first needs to rotate the butterfly nut 26 to release the L-shaped lifting slide 24 and move the bottom rolling assembly 6 and the top rolling assembly 28 away from each other, and then place the guide steel cable 4 under the two sets of top rolling assemblies 28 and push the L-shaped lifting slide 24 to the top limit position, and lock it by rotating the butterfly nut 26. At this time, the guide steel cable 4 is stably clamped between the bottom rolling assembly 6 and the top rolling assembly 28, and the guide steel cable 4 is in rolling contact with both the bottom roller 13 and the top roller 31.

[0055] In the process of pushing the device by an external pull rope or other means, various parameters of the power transmission cable are detected by the detection module 10;

[0056] During normal movement, the device moves at a slow speed. At this time, the impeller body 14 rotates slowly following the bottom shaft 12, and will not generate a large driving force on the liquid in the liquid storage box 15. At this time, the liquid pressure in the hydraulic pipeline 16 cannot overcome the elastic force of the return spring 19 to push the telescopic brake member 18. Therefore, when moving at a low speed, the telescopic brake member 18 will not be released from the guide cable 4, and will not generate resistance to the movement.

[0057] As the travel speed increases, the telescopic brake component 18 will also extend and the extension amplitude will increase. When the telescopic brake component 18 contacts the guide steel cable 4, the telescopic brake component 18 will generate resistance to prevent the device from sliding, and the squeezing force between the telescopic brake component 18 and the guide steel cable 4 will increase with the increase in the rotation speed of the bottom rotating shaft 12. In other words, the faster the travel speed of the device, the greater the friction resistance between the telescopic brake component 18 and the guide steel cable 4.

[0058] In this way, the speed of the device will never be too fast when encountering unexpected situations such as the downhill stage of the guide steel cable 4, the disconnection or falling of the traction rope, etc. On the one hand, it can leave more sufficient rescue time and space for the operator. On the other hand, the out-of-control inspection device can stop at the next out-of-control obstacle in time. The lower speed can also avoid damage to the detection module 10 to the greatest extent.

[0059] As another new embodiment of the present utility model, if the contact between the telescopic brake member 18 and the guide cable 4 and the small initial friction force are maintained, the speed fluctuation during the manual pulling process can be greatly reduced and the stability of the detection can be significantly improved.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0061] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A transmission line inspection device, characterized in that: The invention comprises a speed-sensitive variable resistance mechanism (1), a mounting locking assembly (2), a hanging frame assembly (3) and a guide steel cable (4), wherein the speed-sensitive variable resistance mechanism (1) is arranged on the hanging frame assembly (3), the hanging frame assembly (3) is rotatably arranged on the guide steel cable (4), and the mounting locking assembly (2) is lifted and lowered on the speed-sensitive variable resistance mechanism (1); The speed-sensitive variable resistance mechanism (1) comprises a detection component (5), a bottom rolling component (6), an impeller stirring component (7) and a telescopic brake component (8), wherein the detection component (5) is arranged on a hanging frame component (3), the bottom rolling component (6) is arranged on a mounting locking component (2), the impeller stirring component (7) is slidably arranged on the detection component (5), and the telescopic brake component (8) is fixedly connected to the detection component (5).

2. A transmission line inspection device according to claim 1, characterized in that: The detection assembly (5) comprises a hanging frame (9) and a detection module (10); the hanging frame (9) is arranged on the hanging frame assembly (3); a bottom plate (23) is arranged at the bottom of the hanging frame (9); and the detection module (10) is arranged on the bottom plate (23).

3. A transmission line inspection device according to claim 2, characterized in that: The bottom rolling assembly (6) comprises a bottom fork frame (11), a bottom rotating shaft (12) and a bottom roller (13); the bottom fork frame (11) is arranged on the mounting locking assembly (2); the bottom rotating shaft (12) is rotatably arranged in the bottom fork frame (11); and the bottom roller (13) is snap-fitted onto the bottom rotating shaft (12).

4. A transmission line inspection device according to claim 3, characterized in that: The impeller stirring assembly (7) comprises an impeller body (14), a liquid storage box (15) and a hydraulic pipeline (16); the impeller body (14) is snap-fitted to the end of the bottom rotating shaft (12); a central slot hole portion (21) is provided on the hanging frame (9); the liquid storage box (15) is snap-fitted and slidably arranged in the central slot hole portion (21); and the liquid storage box (15) cannot rotate relative to the central slot hole portion (21).

5. A transmission line inspection device according to claim 4, characterized in that: The telescopic brake assembly (8) comprises a telescopic sleeve (17), a telescopic brake member (18) and a return spring (19); a circular hole portion (20) is further provided on the hoisting frame (9); the telescopic sleeve (17) is fixedly connected to the circular hole portion (20); the telescopic brake member (18) is slidably engaged in the telescopic sleeve (17); and the return spring (19) is provided between the telescopic sleeve (17) and the telescopic brake member (18).

6. A transmission line inspection device according to claim 5, characterized in that: The liquid storage box 1 (15) and the telescopic sleeve (17) are connected through a hydraulic pipeline (16).

7. A transmission line inspection device according to claim 6, characterized in that: The installation locking assembly (2) comprises an L-shaped lifting slide plate (24), a fastening stud (25) and a butterfly nut (26); the fastening stud (25) is symmetrically arranged on the L-shaped lifting slide plate (24); the hanging frame (9) is symmetrically provided with side slot holes (22); the fastening stud (25) is slidably arranged in the side slot holes (22); the fastening stud (25) and the butterfly nut (26) are threadedly connected; the L-shaped lifting slide plate (24) and the hanging frame (9) are locked and fixed by the fastening stud (25) and the butterfly nut (26).

8. A transmission line inspection device according to claim 7, characterized in that: The hanging frame assembly (3) comprises a roof-type frame (27) and a top rolling assembly (28), wherein the top rolling assembly (28) is symmetrically arranged below the roof-type frame (27), and the hanging frame (9) is fixedly connected to one side of the roof-type frame (27).

9. A transmission line inspection device according to claim 8, characterized in that: The top rolling assembly (28) comprises a top fork frame (29), a top rotating shaft (30) and a top roller (31); the top fork frame (29) is fixedly connected to the bottom of the roof-type frame (27); the top rotating shaft (30) is rotatably disposed in the top fork frame (29); and the top roller (31) is snap-fitted onto the top rotating shaft (30).

10. A transmission line inspection device according to claim 9, characterized in that: The bottom fork frame (11) is fixedly connected to the L-shaped lifting slide plate (24), and the bottom roller (13) and the top roller (31) are both in rolling contact with the guide steel cable (4).

Images