Cable fault detection device

Abstract

The utility model discloses a cable fault detection device which comprises a concave frame, a sensor bin and an ultrasonic sensor, the sensor bin is rotatably connected to the inner side of the concave frame, a sensor seat is slidably connected to the interior of the sensor bin, the ultrasonic sensor is fixed to the right end of the sensor seat, and the right end of the ultrasonic sensor movably penetrates out of the right end of the sensor bin. A pair of guide rails is symmetrically fixed at the upper end of the sensor bin and positioned on the front side and the rear side of the sliding groove. When the telescopic length of the ultrasonic sensor needs to be adjusted, only a pressing block needs to be pressed, the pressing block drives a positioning rod to move out of a positioning hole through a sliding plate, a guide block can slide in a guide rail, then a sliding seat is pushed, the sliding seat can drive a sensor seat to slide, and the sensor seat can drive the ultrasonic sensor to stretch out and draw back. Therefore, the ultrasonic sensor can be adjusted to stretch out and draw back only by pushing the sliding seat to a proper position without repeated rotation operation by a tool, and the operation is convenient.

Description

Technical Field

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

[0002] Cable joints are also called cable heads. Specifically, after the cable is laid, in order to make it a continuous line, each section of the line must be connected as a whole. These connection points are called cable joints. Cable joints are used to lock and fix the incoming and outgoing lines, and play a role in waterproofing, dustproofing and vibration prevention. The outer skin of the cable joint is an insulating layer to avoid leakage and ensure the safe and stable operation of the power line. However, the insulation layer of the cable joint will gradually age over time, causing its insulation performance to deteriorate, resulting in leakage, thermal expansion and even explosion at the cable head. This is especially true for cable heads that have been buried in cable trenches for a long time and have serious insulation aging. At present, the method for detecting cable joints is generally to detect the cable head through instruments such as ultrasonic detectors.

[0003] After searching, a utility model with patent number 202320766054.3 discloses an ultrasonic detection mechanism for overhead cable joints. When detecting cable joints, the ultrasonic detection mechanism for overhead cable joints can adjust the detection angle and telescopic length of the ultrasonic sensor, but the adjustment of the telescopic length requires continuous rotation of the auxiliary top screw, which requires the use of tools to rotate the auxiliary top screw, which is more troublesome. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects of the prior art and provide a cable fault detection device to solve the problems existing in the above-mentioned background technology.

[0005] A cable fault detection device comprises a concave frame, a sensor compartment and an ultrasonic sensor, the sensor compartment being rotatably connected to the inner side of the concave frame, a sensor seat being slidably connected inside the sensor compartment, the ultrasonic sensor being fixed to the right end of the sensor seat, the right end of the ultrasonic sensor movably passing through the right end of the sensor compartment, a slide groove being opened at the upper end of the sensor compartment, a pair of guide rails being symmetrically fixed at the upper end of the sensor compartment and located at the front and rear sides of the slide groove, a plurality of positioning holes being opened horizontally and equidistantly at the upper ends of the guide rails, a slide seat being slidably connected inside the slide groove, guide blocks being integral with the slide seat being fixed at the front and rear ends of the slide seat, the guide block being located inside the guide rail and slidably connected to the guide rail, an inner cavity being provided inside the slide seat and the guide block, a pressing block being movably passed through the upper end of the slide seat, a positioning rod being movably passed through the upper end of the guide block, a linkage assembly being connected between the positioning rod and the lower part of the pressing block.

[0006] Specifically, two groups of ratchet mechanisms are symmetrically installed at the front and rear ends of the concave frame, and the ratchet mechanisms are connected to the sensor compartment.

[0007] Specifically, the ratchet mechanism includes a ratchet box, a rotating shaft, a ratchet, a pawl, a spring sheet, and a pressure rod. The ratchet box is fixed to a concave frame, the rotating shaft is rotatably connected inside the ratchet box, the end of the rotating shaft passes through the concave frame and is fixed to the sensor compartment, the ratchet is located in the ratchet box and fixed outside the rotating shaft, the pawl is rotatably connected inside the ratchet box, and the pawl is located above the ratchet and connected to the ratchet.

[0008] Specifically, the spring sheet is V-shaped and connected between the upper end of the pawl and the top end inside the ratchet box.

[0009] Specifically, the pressure rod is fixed on the side of the pawl, an arc groove is formed on the upper end of the ratchet box, and the arc groove extends from the upper end of the pressure rod.

[0010] Specifically, the linkage assembly includes a slide plate and a spring. The slide plate is fixed between the pressing block and the lower end of the positioning rod. The slide plate is slidably connected to the inner cavity. The spring is connected between the lower end of the slide plate and the bottom of the inner cavity.

[0011] Beneficial effects:

[0012] 1. When the cable fault detection device needs to adjust the telescopic length of the ultrasonic sensor, it only needs to press the pressing block, and the pressing block drives the positioning rod to move down out of the positioning hole through the slide plate, so that the guide block can slide in the guide rail, and then push the slide seat, the slide seat can drive the sensor seat to slide, and the sensor seat will drive the ultrasonic sensor to extend and retract, so there is no need to use tools to repeatedly rotate the operation, and the extension and retraction of the ultrasonic sensor can be adjusted by only pushing the slide seat to a suitable position, which is easy to operate;

[0013] 2. In the cable fault detection device, when it is necessary to adjust the detection angle of the ultrasonic sensor, because the ratchets on the front and rear sides of the concave frame are symmetrically arranged, one set of ratchets and pawls can cooperate to prevent the sensor compartment from rotating clockwise, and the other set of ratchets and pawls can cooperate to prevent the sensor compartment from rotating counterclockwise. Therefore, when it is necessary to rotate the sensor compartment to a certain angle, it is only necessary to press the corresponding pressure rod to separate the corresponding pawl from the ratchet wheel, and the rotation angle in the corresponding direction can be adjusted, thereby improving the convenience of adjusting the detection angle of the ultrasonic sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an overall schematic diagram of the utility model;

[0015] Figure 2 It is a cross-sectional schematic diagram of the ratchet box of the utility model;

[0016] Figure 3 It is a cross-sectional schematic diagram of the slide seat of the utility model.

[0017] In the figure: 1-concave frame, 2-sensor compartment, 3-ratchet box, 4-sensor seat, 5-slide seat, 6-pressing block, 7-slide groove, 8-guide rail, 9-positioning hole, 10-rotating shaft, 11-ratchet, 12-pawl, 13-spring sheet, 14-pressure rod, 15-arc groove, 16-guide block, 17-slide plate, 18-spring, 19-positioning rod, 20-ultrasonic sensor. DETAILED DESCRIPTION

[0018] See also Figure 1-Figure 3 A cable fault detection device comprises a concave frame 1, a sensor compartment 2 and an ultrasonic sensor 20, wherein the sensor compartment 2 is rotatably connected to the inner side of the concave frame 1, a sensor seat 4 is slidably connected inside the sensor compartment 2, the ultrasonic sensor 20 is fixed to the right end of the sensor seat 4, the right end of the ultrasonic sensor 20 movably passes through the right end of the sensor compartment 2, a slide groove 7 is opened at the upper end of the sensor compartment 2, a pair of guide rails 8 are symmetrically fixed at the upper end of the sensor compartment 2 and located at the front and rear sides of the slide groove 7, and the upper ends of the guide rails 8 are horizontally equidistantly opened. There are multiple positioning holes 9, the slide 7 is slidably connected to the slide seat 5, the front and rear ends of the slide seat 5 are fixed with guide blocks 16 that are integral with it, the guide block 16 is located inside the guide rail 8 and is slidably connected to the guide rail 8, the slide seat 5 and the guide block 16 are provided with an inner cavity, the upper end of the slide seat 5 is movably penetrated by a pressing block 6, the upper end of the guide block 16 is movably penetrated by a positioning rod 19, a linkage assembly is connected between the positioning rod 19 and the lower part of the pressing block 6, the linkage assembly includes a slide plate 17 and a spring 18, the slide plate 17 is fixed to the pressing block 6 and the lower end of the positioning rod 19, the slide plate 17 is slidably connected to the inner cavity, and the spring 18 is connected between the lower end of the slide plate 17 and the bottom of the inner cavity. When it is necessary to adjust the telescopic length of the ultrasonic sensor 20, it is only necessary to press the pressing block 6, and the pressing block 6 drives the slide plate 17 to move down and squeeze the spring 18, and the positioning rod 19 is driven by the slide plate 17 to move down out of the positioning hole 9 of the guide rail 8, so that the guide block 16 can slide in the guide rail 8, and then push the slide seat 5, and the slide seat 5 can drive the sensor seat 4 to slide inside the sensor compartment 2, and the sensor The seat 4 will drive the ultrasonic sensor 20 to extend out of the sensor compartment 2 or retract into the sensor compartment 2, so there is no need to use tools to repeatedly rotate it. It is only necessary to push the slide seat 5 to the appropriate position, align the positioning rod 19 with the positioning hole 9, and release the pressing block 6. At this time, the spring 18 resets and pushes the slide plate 17 upward to reset. The slide plate 17 drives the positioning rod 19 and the pressing block 6 to reset. At this time, the positioning rod 19 is plugged into the positioning hole 9 to play the role of clamping the guide block 16 and the guide rail 8. In this way, the extension and retraction of the ultrasonic sensor 20 can be adjusted, and the operation is convenient.

[0019] Two groups of ratchet mechanisms are symmetrically installed at the front and rear ends of the concave frame 1. The ratchet mechanism is connected to the sensor compartment 2. The ratchet mechanism includes a ratchet box 3, a rotating shaft 10, a ratchet 11, a pawl 12, a spring sheet 13, and a pressure rod 14. The ratchet box 3 is fixed to the concave frame 1, and the rotating shaft 10 is rotatably connected inside the ratchet box 3. The end of the rotating shaft 10 passes through the concave frame 1 and is fixed to the sensor compartment 2. The ratchet 11 is located in the ratchet box 3 and fixed to the outside of the rotating shaft 10. The pawl 12 is rotatably connected to the inside of the ratchet box 3. The pawl 12 is located above the ratchet 11 and connected to the ratchet 11. The spring sheet 13 is V-shaped and connected between the upper end of the pawl 12 and the top of the inside of the ratchet box 3. The pressure rod 14 is fixed to the side of the pawl 12. The upper end of the ratchet box 3 is provided with an arc groove 15. The arc groove 15 extends from the upper end of the pressure rod 14. When the detection angle of the ultrasonic sensor 20 needs to be adjusted, because the ratchets on the front and rear sides of the concave frame 1 11 is symmetrically arranged, so the front group of ratchets 11 and the pawl 12 cooperate to prevent the sensor compartment 2 from rotating counterclockwise, and the rear group of ratchets 11 and the pawl 12 cooperate to prevent the sensor compartment 2 from rotating clockwise. Therefore, when the sensor compartment 2 needs to be rotated clockwise by a certain angle, it is only necessary to press the rear pressure rod 14, and the rear pressure rod 14 drives the rear pawl 12 to rotate and separate from the rear ratchet 11. At this time, the rear ratchet 11 can rotate clockwise normally, so that the rear shaft 10 can rotate clockwise together with the sensor compartment 2. When the sensor compartment 2 needs to be rotated counterclockwise by a certain angle, it is only necessary to press the front pressure rod 14, and the front pressure rod 14 drives the front pawl 12 to rotate and separate from the front ratchet 11. At this time, the front ratchet 11 can rotate counterclockwise normally, so that the front shaft 10 can rotate counterclockwise together with the sensor compartment 2. This operation improves the convenience of adjusting the detection angle of the ultrasonic sensor 20.

[0020] Working principle: Before using the ultrasonic sensor 20 to detect the cable connector, it is necessary to adjust the telescopic length and detection angle of the ultrasonic sensor 20, press the pressing block 6, and drive the positioning rod 19 to move down and out of the positioning hole 9 of the guide rail 8 through the slide plate 17, and then push the slide 5. The slide 5 can drive the sensor seat 4 to slide inside the sensor compartment 2. The sensor seat 4 will drive the ultrasonic sensor 20 to extend out of the sensor compartment 2 or retract into the sensor compartment 2. After pushing the slide 5 to the appropriate position, align the positioning rod 19 with the positioning hole 9, release the pressing block 6, and the positioning rod 19 is reset and plugged into the positioning hole 9 to achieve the connection between the guide block 16 and the guide rail 8. When it is necessary to adjust the detection angle of the ultrasonic sensor 20, rotate the sensor compartment 2 clockwise. To reach a certain angle, you only need to press the rear pressure rod 14, and the rear pressure rod 14 will drive the rear pawl 12 to rotate and separate from the rear ratchet 11. At this time, the rear ratchet 11 can rotate clockwise normally, so that the rear shaft 10 can rotate clockwise together with the sensor compartment 2. To rotate the sensor compartment 2 counterclockwise to a certain angle, you only need to press the front pressure rod 14, and the front pressure rod 14 will drive the front pawl 12 to rotate and separate from the front ratchet 11. At this time, the front ratchet 11 can rotate counterclockwise normally, so that the front shaft 10 can rotate counterclockwise together with the sensor compartment 2. After adjusting the telescopic length and detection angle of the ultrasonic sensor 20, the ultrasonic sensor 20 can be used to detect the cable connector close to the cable connector.

Claims

1. A cable fault detection device, comprising a concave frame (1), a sensor compartment (2) and an ultrasonic sensor (20), wherein the sensor compartment (2) is rotatably connected to the inner side of the concave frame (1), a sensor seat (4) is slidably connected inside the sensor compartment (2), the ultrasonic sensor (20) is fixed to the right end of the sensor seat (4), and the right end of the ultrasonic sensor (20) movably passes through the right end of the sensor compartment (2), characterized in that: A slide groove (7) is formed at the upper end of the sensor bin (2); a pair of guide rails (8) are symmetrically fixed at the upper end of the sensor bin (2) and located on both sides of the slide groove (7); a plurality of positioning holes (9) are formed horizontally and equidistantly at the upper end of the guide rails (8); a slide seat (5) is slidably connected inside the slide groove (7); guide blocks (16) integral with the slide seat (5) are fixed at both the front and rear ends of the slide seat (5); the guide blocks (16) are located inside the guide rails (8) and are slidably connected to the guide rails (8); an inner cavity is formed inside the slide seat (5) and the guide blocks (16); a pressing block (6) is movably penetrated at the upper end of the slide seat (5); a positioning rod (19) is movably penetrated at the upper end of the guide block (16); a linkage assembly is connected between the positioning rod (19) and the lower part of the pressing block (6).

2. A cable fault detection device according to claim 1, characterized in that: Two sets of ratchet mechanisms are symmetrically mounted at both the front and rear ends of the concave frame (1), and the ratchet mechanisms are connected to the sensor compartment (2).

3. A cable fault detection device according to claim 2, characterized in that: The ratchet mechanism comprises a ratchet box (3), a rotating shaft (10), a ratchet (11), a pawl (12), a spring sheet (13), and a pressure rod (14); the ratchet box (3) is fixed to the concave frame (1); the rotating shaft (10) is rotatably connected to the inside of the ratchet box (3); the end of the rotating shaft (10) passes through the concave frame (1) and is fixed to the sensor compartment (2); the ratchet (11) is located in the ratchet box (3) and fixed to the outside of the rotating shaft (10); the pawl (12) is rotatably connected to the inside of the ratchet box (3); the pawl (12) is located above the ratchet (11) and is connected to the ratchet (11).

4. A cable fault detection device according to claim 3, characterized in that: The spring sheet (13) is V-shaped and connected between the upper end of the pawl (12) and the top end inside the ratchet box (3).

5. A cable fault detection device according to claim 3, characterized in that: The pressure rod (14) is fixed to the side of the pawl (12); an arc groove (15) is formed at the upper end of the ratchet box (3); and the arc groove (15) extends from the upper end of the pressure rod (14).

6. A cable fault detection device according to claim 1, characterized in that: The linkage assembly comprises a slide plate (17) and a spring (18); the slide plate (17) is fixed between the pressing block (6) and the lower end of the positioning rod (19); the slide plate (17) is slidably connected to the interior of the inner cavity; and the spring (18) is connected between the lower end of the slide plate (17) and the bottom of the inner cavity.

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