Cable fault detection device

Abstract

The invention discloses a cable fault detection device, and relates to the technical field of cable detection. Movable rods are arranged on the two sides of the lower surface of a supporting plate, the upper ends of the two movable rods are hinged to the supporting plate, and the two movable rods can rotate in the same direction or back to back for adjustment; a telescopic adjusting mechanism used for pushing the two movable rods to rotate and adjust synchronously in the opposite direction or the back direction is arranged between the two movable rods, the lower ends of the two movable rods are each provided with a longitudinal supporting rod capable of being adjusted in a telescopic mode in the axial direction of the corresponding movable rod, and supporting wheels are rotationally installed at the lower ends of the longitudinal supporting rods. Transverse supporting rods capable of being telescopically adjusted outwards are arranged on the end faces of the two ends of the supporting plates, hub motors are rotationally installed at the ends of the transverse supporting rods, and ultrasonic flaw detectors used for conducting flaw detection on cables are arranged on the upper surfaces of the supporting plates correspondingly; according to the invention, efficient and convenient flaw detection can be directly carried out on the buried cable underground in a manner of carrying out driving walking along the buried cable protection sleeve.

Description

Technical Field

[0001] The present invention relates to the technical field of cable detection, and in particular to a cable fault detection device. Background Art

[0002] It is well known that the cable structure is composed of a conductor located at the core position and an insulating sheath wrapping the conductor. The current insulating sheath is basically made of rubber material or foam material. Regardless of whether it is rubber material or foam material, the cable is produced by wrapping the heated and softened rubber material or foam material on the conductor. During the use of the cable, the wear, excessive bending or mis-cutting of the cable will cause local insulation defects on the cable surface, that is, the problem of damaged core. Especially when the cable is laid, because the cable needs to be transported, handled and dragged, the cable skin is very likely to be damaged by friction during these operations, which brings hidden dangers to the subsequent safe laying of the cable.

[0003] Most of the cables nowadays are laid underground, which leads to the following deficiencies in fault detection of buried cables: 1. When testing buried cables, the operation is usually carried out on the ground, which not only requires the staff to repeatedly confirm the direction of cable laying, but also requires handheld testing equipment to walk around for testing, which is time-consuming and laborious; 2. When testing buried cables on the ground, workers need to walk along the cable laying line for testing. Although most buried cables are laid on both sides of the road, workers cannot observe the road conditions in time during the testing process. In addition, both sides of the road are mostly green belts or uneven roads, which poses a great safety hazard. 3. When testing buried cables on the ground, they are not only easily disturbed by asphalt pavement, soil and stones, but also most buried cables are laid in protective casings, which will also cause great interference to cable detection. This leads to unsatisfactory ground detection results and inability to accurately detect cables. Therefore, there is an urgent need for a cable fault detection device that can overcome the above-mentioned shortcomings. Summary of the invention

[0004] In order to overcome the shortcomings of the background technology, the present invention discloses a cable fault detection device. The present invention can perform efficient and convenient flaw detection on the buried cable directly underground by driving and walking along the buried cable protection casing.

[0005] To achieve the above object, the present invention adopts the following technical solution: A cable fault detection device comprises a support plate, movable rods are arranged on both sides of the lower surface of the support plate, the upper ends of the two movable rods are hingedly connected to the support plate and can be rotated toward or away from each other, a telescopic adjustment mechanism is arranged between the two movable rods for pushing the two movable rods to synchronously rotate toward or away from each other, the lower ends of the two movable rods are provided with longitudinal support rods that can be telescopically adjusted along the axial direction of the movable rods, support wheels are rotatably installed on the lower ends of the longitudinal support rods, transverse support rods that can be telescopically adjusted outwards are arranged on the end surfaces of both ends of the support plate, hub motors are rotatably installed on the ends of the transverse support rods, and ultrasonic flaw detectors for performing flaw detection on cables and batteries for supplying power to the hub motors and the ultrasonic flaw detectors are respectively arranged on the upper surfaces of the support plates.

[0006] Furthermore, the support plate is provided with a through hole which penetrates the support plate and facilitates the ultrasonic flaw detector to perform ultrasonic flaw detection on the cable at the bottom of the support plate.

[0007] Furthermore, the telescopic adjustment mechanism includes a rotating seat, a cross bar and an adjusting screw. A rotating seat is provided at one end of the cross bar, and an adjusting screw is embedded in the other end of the cross bar, which is coaxially arranged with the cross bar and cooperates with the cross bar thread drive. The rotating seat and the adjusting screw are respectively hingedly connected to the adjacent movable rod at one end away from the cross bar.

[0008] Furthermore, the longitudinal support rod includes a support screw A and a movable rod A. The end surface of the movable end of the movable rod is provided with a thread groove A arranged along the axial direction of the movable rod. The thread groove A is provided with a support screw A which is arranged coaxially with the movable rod and threadably matched with the thread groove A. The end of the support screw A away from the movable rod is provided with a support rod A which is arranged coaxially with the support screw A and can elastically extend and retract along the axial direction of the support screw A. The support wheel is fixedly installed on the end of the support rod A away from the movable rod.

[0009] Furthermore, a groove A arranged along the axial direction of the support screw A is provided on the end surface of the support screw A away from the movable rod, one end of the support rod A is inserted into the groove A and is loosely matched with the groove A, an upper baffle A is provided on the outer wall of the notch of the groove A, and a lower baffle A corresponding to the upper baffle A is provided on the rod body at the other end of the support rod A, and a spring A sleeved on the rod body of the support rod A is provided between the corresponding upper baffle A and the lower baffle A.

[0010] Furthermore, the transverse support rod includes a support screw B and a support plate B. The end face of the support plate is provided with a thread groove B. The inner thread of the thread groove B is matched with the support screw B. The end of the support screw B away from the support plate is provided with a support rod B which is coaxially arranged with the support screw B and can elastically extend and retract along the axial direction of the support screw B. The hub motor is fixedly installed on the end of the support rod B away from the support screw B.

[0011] Furthermore, a groove B arranged along the axial direction of the support screw B is provided on the end surface of the support screw B away from the support plate, one end of the support rod B is inserted into the groove B and is loosely matched with the groove B, an upper baffle B is provided on the outer wall of the groove B, and a mounting seat corresponding to the upper baffle B is provided at the other end of the support rod B, a spring B sleeved on the rod body of the support rod B is provided between the corresponding upper baffle B and the mounting seat, and the hub motor is installed in the mounting seat.

[0012] Furthermore, a positioning rod perpendicular to the supporting plate is provided on the upper surface of the supporting plate, and a positioning wheel is provided on the upper end of the positioning rod.

[0013] Furthermore, the positioning rod includes a vertical rod and a secondary rod. The vertical rod is vertically arranged on the upper part of the support plate. The vertical rod is provided with a secondary rod which is coaxially arranged with the vertical rod and can be telescopically adjusted outward through the upper end of the vertical rod. The positioning wheel is fixedly installed on the protruding end of the secondary rod.

[0014] Furthermore, the rod body of the auxiliary rod is provided with a plurality of elastic beads spaced along the axial direction of the auxiliary rod, and the rod body of the vertical rod is provided with positioning holes corresponding to the elastic beads. Compared with the prior art, the beneficial effects of the present invention are: through the cooperation of the support wheel at the end of the transverse support rod and the hub motor at the end of the longitudinal support rod, it can contact the inner wall of the protective sleeve, thereby driving the ultrasonic flaw detector to drive and move along the protective sleeve, so as to perform convenient and efficient flaw detection on the cable in the protective sleeve; By setting the through opening, the ultrasonic flaw detector installed on the upper part of the support plate can perform efficient and accurate ultrasonic flaw detection on the cables under the support plate, which not only ensures the accuracy and efficiency of the flaw detection, but also protects the detection equipment; By setting up a telescopic adjustment mechanism, the two movable rods can be rotated and adjusted, thereby adjusting the distance between the two support wheels, so that the two support wheels can be located on both sides of the cable for rolling walking, providing strong support for subsequent walking flaw detection; Through the threaded support screw A and support screw B, the position of the support wheel and the hub motor can be adjusted so that they can be installed to fit the inner diameter of the protective sleeve; By setting elastically retractable support rods A and B, it can be ensured that the support wheel and the hub motor can effectively contact the inner wall of the protective casing, providing strong support for subsequent walking flaw detection; By setting the positioning rod and the positioning wheel, the supporting wheel can be matched to greatly improve the stability of the support plate, providing strong support for the subsequent flaw detection of the cable; The present invention can carry out efficient and convenient flaw detection on buried cables directly underground by driving and walking along the buried cable protection casing, avoiding the traditional method of workers performing detection through detection equipment on the ground. It not only greatly reduces the work difficulty and workload of the workers, but also effectively improves the accuracy of flaw detection, thus providing a strong guarantee for the safe use of buried cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the telescopic adjustment mechanism of the present invention; Figure 3 It is a schematic diagram of the longitudinal support rod structure of the present invention; Figure 4 It is a schematic diagram of the structure of the transverse support rod of the present invention; Figure 5 It is a schematic diagram of the positioning rod structure of the present invention.

[0016] In the figure: 1. positioning wheel; 2. positioning rod; 3. battery; 4. ultrasonic flaw detector; 5. support plate; 6. hub motor; 7. horizontal support rod; 8. through port; 9. movable rod; 10. telescopic adjustment mechanism; 11. longitudinal support rod; 12. support wheel; 13. hinge seat A; 14. hinge seat B; 15. rotating seat; 16. cross bar; 17. adjusting screw; 18. thread groove A; 19. support screw A; 20. groove A; 21. upper baffle A; 22. support rod A; 23. spring A; 24. lower baffle A; 25. thread groove B; 26. support screw B; 27. groove B; 28. upper baffle B; 29. ​​support rod B; 30. spring B; 31. mounting seat; 32. auxiliary rod; 33. positioning hole 33; 34. elastic card bead; 35. vertical rod. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present invention and are for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction.

[0018] Please refer to the instruction manual Figure 1-5 , the present invention provides a technical solution: Embodiment 1, a cable fault detection device, including a support plate 5, movable rods 9 are provided on both sides of the lower surface of the support plate 5, the upper ends of the two movable rods 9 are hingedly connected to the support plate 5, and can be rotated toward or away from each other, and a telescopic adjustment mechanism 10 is provided between the two movable rods 9 for pushing the two movable rods 9 to rotate toward or away from each other synchronously. Specifically, the telescopic adjustment mechanism 10 includes a rotating seat 15, a cross bar 16 and an adjusting screw 17, a rotating seat 15 is provided at one end of the cross bar 16, and an adjusting screw 17 is embedded in the other end of the cross bar 16, which is coaxially arranged with the cross bar 16 and is threadedly driven with the cross bar 16, and the rotating seat 15 and the adjusting screw 17 are away from the cross bar 16. One end is hingedly connected with the adjacent movable rod 9, and the lower ends of the two movable rods 9 are provided with longitudinal support rods 11 that can be telescopically adjusted along the axial direction of the movable rod 9, and the lower ends of the longitudinal support rods 11 are rotatably installed with support wheels 12, and the end faces of both ends of the support plate 5 are provided with transverse support rods 7 that can be telescopically adjusted outward, and the ends of the transverse support rods 7 are rotatably installed with hub motors 6, and the upper surfaces of the support plates 5 are respectively provided with ultrasonic flaw detectors 4 for flaw detection of cables, and batteries 3 for powering the hub motors 6 and the ultrasonic flaw detectors 4, and the support plates 5 are also provided with openings 8 that penetrate the support plates 5 and facilitate the ultrasonic flaw detectors 4 to perform ultrasonic flaw detection on the cables at the bottom of the support plates 5; The laying of buried cables is usually carried out in sections, and there will be a cable well between each section, so that it is convenient for workers to inspect and replace the cables. Therefore, when performing flaw detection on buried cables, the workers only need to go down into the cable well, place the device at the end of a section of protective casing, and adjust the distance between the two movable rods 9 through the telescopic adjustment mechanism 10, so that the two support wheels 12 are respectively located on both sides of the buried cable, and then adjust the longitudinal support rod 11 and the transverse support rod 7 so that the support wheels 12 and the hub motor 6 are in contact with the inner wall of the protective casing. The rotation drive of the hub motor 6 can drive the ultrasonic flaw detector 4 on the support plate 5 to move along the protective casing. During the walking process, the through port 8 can be used to perform efficient flaw detection on the buried cable at the bottom of the support plate 5. The detection structure can be recorded in real time by the ultrasonic flaw detector 4, and can also be transmitted to the workers by wireless. When the device has finished traveling along the section of the protective casing, the workers only need to enter the next section of the cable well to continue the operation.

[0019] Embodiment 2: In order to facilitate the staff to adjust the telescopic length of the longitudinal support rod 11 and the transverse support rod 7, The longitudinal support rod 11 includes a support screw A19 and a movable rod A22. The movable end face of the movable rod 9 is provided with a thread groove A18 arranged along the axial direction of the movable rod 9. The thread groove A18 is provided with a support screw A19 which is arranged coaxially with the movable rod 9 and threadably matched with the thread groove A18. The end of the support screw A19 away from the movable rod 9 is provided with a support rod A22 which is arranged coaxially with the support screw A19 and can elastically extend and retract along the axial direction of the support screw A19. The support wheel 12 is fixedly installed on the end of the support rod A22 away from the movable rod 9. The transverse support rod 7 includes a support screw B26 and a support plate B29. The end face of the support plate 5 is provided with a thread groove B25. The inner thread of the thread groove B25 is matched with the support screw B26. The end of the support screw B26 away from the support plate 5 is provided with a support rod B29 which is arranged coaxially with the support screw B25 and can elastically extend and retract along the axial direction of the support screw B25. The hub motor 6 is fixedly installed on the end of the support rod B29 away from the support screw B26.

[0020] Embodiment 3, in order to ensure that the wheel hub motor 6 and the support wheel 12 can effectively contact the inner wall of the protective sleeve and provide support for subsequent driving walking, the end surface of the support screw A19 away from the movable rod 9 is provided with a groove A20 arranged along the axial direction of the support screw A19, one end of the support rod A22 is inserted into the groove A20 and is gap-matched with the groove A20, an upper baffle A21 is provided on the outer wall of the groove A20, and a lower baffle A24 corresponding to the upper baffle A21 is provided on the rod body of the other end of the support rod A22, and a spring A23 sleeved on the rod body of the support rod A22 is provided between the corresponding upper baffle A21 and the lower baffle A24, and the support screw A groove B27 arranged along the axial direction of the support screw B26 is provided on the end surface of the rod B26 away from the support plate 5, one end of the support rod B29 is inserted into the groove B27 and is loosely matched with the groove B27, an upper baffle B28 is provided on the outer wall of the groove B2, and a mounting seat 31 corresponding to the upper baffle B28 is provided at the other end of the support rod B29, and a spring B30 sleeved on the rod body of the support rod B29 is provided between the corresponding upper baffle B28 and the mounting seat 31, and the hub motor 6 is installed in the mounting seat 31, and the elastic support of the spring A23 and the spring B30 can ensure that the hub motor 6 and the support wheel 12 are always in contact with the inner wall of the protective sleeve.

[0021] Embodiment 4, in order to ensure the horizontal stability of the device when walking in the protective sleeve, a positioning rod 2 perpendicular to the support plate 5 is provided on the upper surface of the support plate 5, and the positioning rod 2 includes a vertical rod 35 and a secondary rod 32. The vertical rod 35 is vertically arranged on the upper part of the support plate 5, and a secondary rod 32 is provided in the vertical rod 35, which is coaxially arranged with the vertical rod 35 and can be telescopically adjusted outward through the upper end of the vertical rod 35. The rod body of the secondary rod 32 is provided with a plurality of elastic beads 34 arranged at intervals along the axial direction of the secondary rod 32, and the rod body of the vertical rod 35 is provided with positioning holes 33 corresponding to the elastic beads 34. The protruding end of the secondary rod 32 is provided with a positioning wheel 1. By utilizing the cooperation of the positioning wheel 1, the support wheel 12 and the hub motor 6, the device can stably and effectively walk in the protective sleeve.

[0022] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. A cable fault detection device, comprising a support plate (5), characterized in that: Both sides of the lower surface of the support plate (5) are provided with movable rods (9), the upper ends of the two movable rods (9) are hingedly connected to the support plate (5) and can be rotated toward or away from each other, a telescopic adjustment mechanism (10) for pushing the two movable rods (9) to synchronously rotate toward or away from each other is provided between the two movable rods (9), the lower ends of the two movable rods (9) are provided with longitudinal support rods (11) that can be telescopically adjusted along the axis of the movable rods (9), and support wheels (12) are rotatably mounted on the lower ends of the longitudinal support rods (11), both end surfaces of the support plate (5) are provided with transverse support rods (7) that can be telescopically adjusted outwards, and the ends of the transverse support rods (7) are rotatably mounted with wheel hub motors (6), and the upper surfaces of the support plate (5) are respectively provided with ultrasonic flaw detectors (4) for performing flaw detection on cables, and storage batteries (3) for supplying power to the wheel hub motors (6) and the ultrasonic flaw detectors (4).

2. A cable fault detection device according to claim 1, characterized in that: The support plate (5) is also provided with a through opening (8) which penetrates the support plate (5) and facilitates the ultrasonic flaw detector (4) to perform ultrasonic flaw detection on the cable below the support plate (5).

3. A cable fault detection device according to claim 1, characterized in that: The telescopic adjustment mechanism (10) comprises a rotating seat (15), a cross bar (16) and an adjusting screw (17). The rotating seat (15) is provided at one end of the cross bar (16). The adjusting screw (17) which is coaxially arranged with the cross bar (16) and is thread-driven with the cross bar (16) is embedded in the other end of the cross bar (16). The ends of the rotating seat (15) and the adjusting screw (17) which are away from the cross bar (16) are respectively hingedly connected to the adjacent movable rod (9).

4. A cable fault detection device according to claim 1, characterized in that: The longitudinal support rod (11) comprises a support screw rod A (19) and a movable rod A (22); a thread groove A (18) arranged along the axial direction of the movable rod (9) is provided on the movable end surface of the movable rod (9); a support screw rod A (19) arranged coaxially with the movable rod (9) and threadedly matched with the thread groove A (18) is provided in the thread groove A (18); an end of the support screw rod A (19) away from the movable rod (9) is provided with a support rod A (22) coaxially with the support screw rod A (19) and capable of elastically extending and retracting along the axial direction of the support screw rod A (19); and a support wheel (12) is fixedly mounted on the end of the support rod A (22) away from the movable rod (9).

5. A cable fault detection device according to claim 4, characterized in that: A groove A (20) is provided on the end surface of one end of the support screw rod A (19) away from the movable rod (9) and is arranged along the axial direction of the support screw rod A (19). One end of the support rod A (22) is inserted into the groove A (20) and is loosely matched with the groove A (20). An upper baffle A (21) is provided on the outer wall of the groove A (20). A lower baffle A (24) corresponding to the upper baffle A (21) is provided on the rod body of the other end of the support rod A (22). A spring A (23) sleeved on the rod body of the support rod A (22) is provided between the corresponding upper baffle A (21) and the lower baffle A (24).

6. A cable fault detection device according to claim 1, characterized in that: The transverse support rod (7) comprises a support screw rod B (26) and a support plate B (29); a thread groove B (25) is provided on an end surface of the support plate (5); the support screw rod B (26) is matched with an inner thread of the thread groove B (25); a support rod B (29) is provided at one end of the support screw rod B (26) away from the support plate (5) and is coaxially arranged with the support screw rod B (25) and can be elastically extended and retracted along the axial direction of the support screw rod B (25); and the wheel hub motor (6) is fixedly mounted at one end of the support rod B (29) away from the support screw rod B (26).

7. A cable fault detection device according to claim 6, characterized in that: A groove B (27) is provided on an end surface of the support screw B (26) away from the support plate (5) and arranged along the axial direction of the support screw B (26); one end of the support rod B (29) is inserted into the groove B (27) and is loosely matched with the groove B (27); an upper baffle plate B (28) is provided on the outer wall of the notch of the groove B (2); a mounting seat (31) corresponding to the upper baffle plate B (28) is provided at the other end of the support rod B (29); a spring B (30) sleeved on the rod body of the support rod B (29) is provided between the corresponding upper baffle plate B (28) and the mounting seat (31); and the hub motor (6) is mounted in the mounting seat (31).

8. A cable fault detection device according to claim 1, characterized in that: A positioning rod (2) perpendicular to the supporting plate (5) is provided on the upper surface of the supporting plate (5), and a positioning wheel (1) is provided at the upper end of the positioning rod (2).

9. A cable fault detection device according to claim 8, characterized in that: The positioning rod (2) comprises a vertical rod (35) and a secondary rod (32). The vertical rod (35) is vertically arranged on the upper part of the support plate (5). The vertical rod (35) is provided with a secondary rod (32) coaxially arranged with the vertical rod (35) and capable of being telescopically adjusted outwardly through the upper end of the vertical rod (35). The positioning wheel (1) is fixedly mounted on the protruding end of the secondary rod (32).

10. A cable fault detection device according to claim 9, characterized in that: The rod body of the auxiliary rod (32) is provided with a plurality of elastic clamping beads (34) arranged at intervals along the axial direction of the auxiliary rod (32), and the rod body of the vertical rod (35) is provided with positioning holes (33) corresponding to and matching the elastic clamping beads (34).

Images