CN106405321B - A power cable fault detection device - Google Patents

Abstract

The invention discloses a power cable fault detection device, which comprises an ultrasonic detection component and a base arranged under the ultrasonic detection component, and the ultrasonic detection component includes a fixed ring and an ultrasonic wave device arranged inside the fixed ring. The transmitter and the ultrasonic receiver are provided with an opening on one side of the fixed ring, the ultrasonic transmitter and the ultrasonic receiver are respectively located on both sides of the opening, and 2 are arranged on the base. Two supporting rods are respectively provided with mounting plates on the outside of the fixed ring described in 2, and the 2 described mounting plates are arranged symmetrically on both sides of the described opening respectively, and the 2 described mounting plates are respectively fixedly connected to the described openings by bolts. On the support rod described above, the present invention realizes the detection and positioning of cable faults through the ultrasonic detection component, and realizes the continuous detection of high-altitude cables.

Description

A power cable fault detection device

technical field

The invention relates to a power cable fault detection device.

Background technique

During the long-term use of the power cable, it is inconvenient to detect when there is a defect inside the power cable. The existing detection equipment can only detect the outside of the cable. When there is a defect inside the cable, it cannot be conveniently detected and located; at the same time, Since high-altitude electric power cables are usually erected in parallel on power poles and towers, connectors are sometimes required to be installed between the cables to keep them stable. As a result, existing inspection robots cannot perform continuous detection when they reach the connectors.

Contents of the invention

The purpose of the present invention is to provide a power cable fault detection device, which can improve the problems existing in the prior art, realize the detection and positioning of cable faults, and realize the continuous detection of high-altitude cables through ultrasonic detection components.

The present invention is realized through the following technical solutions:

A power cable fault detection device, comprising an ultrasonic detection component and a base arranged under the ultrasonic detection component, the ultrasonic detection component includes a fixed ring, an ultrasonic transmitter and an ultrasonic wave transmitter arranged inside the fixed ring The receiver is provided with an opening on one side of the fixed ring, the ultrasonic transmitter and the ultrasonic receiver are respectively located on both sides of the opening, and two support rods are arranged on the base, Mounting plates are arranged on the outer sides of the fixing rings described in 2, and the two mounting plates are arranged symmetrically on both sides of the opening respectively, and the two mounting plates are fixedly connected to the support rods by bolts respectively Above, three moving support plates are arranged under the base, the width of the moving support plates is larger than the width of the base, and first hydraulic cylinders are respectively arranged above the two ends of the moving support plates, The bottom of the first hydraulic cylinder is fixedly connected to the upper surface of the moving support plate, the telescopic rod of the first hydraulic cylinder is fixedly connected to the lower end surface of the base, and on the side of the moving support plate There are two flanges on the wall, and a rotating shaft is arranged between the flanges. Both ends of the rotating shaft are connected to the flanges through bearings, and a vertical rod is set on the rotating shaft. The end of the vertical pole away from the rotating shaft is provided with a roller, the middle part of the roller is recessed inward to form a V-shaped groove, the roller can be hooked on the cable, and a Two second hydraulic cylinders, a connecting rod is arranged in the middle of the rotating shaft, one end of the second hydraulic cylinder is hinged on the lower end surface of the moving support plate, and the other end of the second hydraulic cylinder is rotatably connected to the On the connecting rod, a controller is arranged on the upper end surface of the base, a bracket is arranged on the upper end surface of the base, a fixed shaft is arranged on the bracket, and the two ends of the fixed shaft pass through The bearing is rotatably connected to the bracket, a gear is sleeved on the fixed shaft, and a motor for driving the rotation of the fixed shaft is arranged on the base. The motor, the first hydraulic cylinder, The second hydraulic cylinder is respectively connected to the controller through lines, and cameras are respectively arranged at the front and rear ends of the base, and the camera, ultrasonic transmitter and ultrasonic receiver are respectively connected to the controller through lines. connected.

Further, in order to better realize the present invention, a lifting plate is provided on the upper end surface of the base, a stud is provided on the lifting plate, and the lower end of the stud is fixedly connected to the base, The upper ends of the studs pass through the lifting plate, adjusting nuts are respectively arranged on the studs on both sides of the lifting plate, and the motor and the bracket are respectively fixedly connected to the on the top face of the lifting plate.

Further, in order to better realize the present invention, a sprocket is arranged on the fixed shaft, and the motor drives the sprocket to rotate through a chain.

Further, in order to better realize the present invention, the lower end of the support rod is fixedly connected to the lifting plate.

Further, in order to better realize the present invention, the two gears are arranged symmetrically on the fixed shaft, and the two said gears are respectively arranged symmetrically under the two sides of the cable.

Further, in order to better realize the present invention, the said gear is a straight bevel gear.

Further, in order to better realize the present invention, anti-collision modules are respectively provided at the front and rear ends of the base, and the anti-collision modules include infrared emitters and infrared transmitters connected to the controller through lines respectively. infrared receiver.

Furthermore, in order to better realize the present invention, anti-skid teeth are arranged inside the V-shaped groove, and the anti-skid teeth are arranged obliquely to one side of the V-shaped groove.

Compared with the prior art, the present invention has the following beneficial effects:

After the composite standard cable is detected by the present invention, the detected data is used as the reference data. When the motor drives the gear to rotate, under the action of friction, the gear can move relative to the cable and drive the overall structure to move along the length direction of the cable. At this time, the ultrasonic non-detection component is used to transmit ultrasonic signals to the cable and receive the signal. According to the change of the received signal, it is compared to observe whether there is a defect inside the cable; The rollers can be removed from the cable when needed, which facilitates the overall structure to overcome obstacles and realize continuous monitoring of cable defects.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is a front view of the present invention;

Fig. 2 is a top view of the present invention;

Fig. 3 is a schematic structural diagram of the ultrasonic detection component of the present invention.

Among them: 101. Base, 102. Moving support plate, 103. First hydraulic cylinder, 104. Flange, 105. Rotating shaft, 106. Vertical rod, 107. Roller, 108. V-shaped groove, 109. Second hydraulic cylinder, 110. Connecting rod, 111. Controller, 112. Bracket, 113. Fixed shaft, 114. Gear, 115. Motor, 116. Lifting plate, 117. Stud, 118. Adjusting nut, 119. Camera, 120. Sprocket , 121. anti-collision module, 122. anti-skid teeth, 123. fixed ring, 124. opening, 125. support rod, 126. mounting plate.

Detailed ways

The present invention will be further described in detail below in conjunction with specific examples, but the implementation of the present invention is not limited thereto.

Example 1:

In this embodiment, the normal and qualified cables are tested, and the ultrasonic detection components are installed on both sides of the qualified cables, so that the ultrasonic transmitter and the ultrasonic receiver are relatively inclined, and the ultrasonic signal emitted by the ultrasonic transmitter is reflected by the internal reflection of the cable. After that, it is received by the ultrasonic receiver, and the ultrasonic signal detected by the qualified cable is used as the reference signal, which is convenient for comparison before and after.

As shown in Figures 1-3, a power cable fault detection device includes an ultrasonic detection component and a base 101 arranged below the ultrasonic detection component, and the ultrasonic detection component includes a fixed ring 123 and is arranged on the The ultrasonic transmitter and ultrasonic receiver inside the fixed ring 123 are provided with an opening 124 on one side of the fixed ring 123, and the ultrasonic transmitter and the ultrasonic receiver are respectively located on both sides of the opening 124 , two support rods 125 are provided on the base 101, and mounting plates 126 are respectively provided outside the fixing ring 123 described in 2, and the two mounting plates 126 are symmetrically arranged on both sides of the opening 124 respectively. On the side, the two mounting plates 126 are respectively fixedly connected to the support rods 125 by bolts, and three moving support plates 102 are arranged below the base 101, and the width of the moving support plates 102 is larger than The width of the base 101 is respectively provided with first hydraulic cylinders 103 above the two ends of the moving support plate 102, and the bottom of the first hydraulic cylinder 103 is fixedly connected to the upper end surface of the moving support plate 102 The telescopic rod of the first hydraulic cylinder 103 is fixedly connected to the lower end surface of the base 101, and two flanges 104 are arranged on the side wall of the moving support plate 102, and one of the flanges 104 There is a rotating shaft 105 between them, the two ends of the rotating shaft 105 are rotatably connected to the flange 104 through bearings, the vertical rod 106 is set on the rotating shaft 105, and the vertical rod 106 is far away from the rotating shaft 105 is provided with a roller 107 at one end, and the middle part of the roller 107 is recessed inward to form a V-shaped groove 108. The roller 107 can be hooked on the cable, and two second Two hydraulic cylinders 109, a connecting rod 110 is arranged in the middle of the rotating shaft 105, one end of the second hydraulic cylinder 109 is hinged on the lower end surface of the moving support plate 102, and the other end of the second hydraulic cylinder 109 is Rotationally connected to the connecting rod 110, a controller 111 is arranged on the upper end surface of the base 101, a bracket 112 is arranged on the upper end surface of the base 101, and a fixed shaft is arranged on the bracket 112. 113, both ends of the fixed shaft 113 are rotatably connected to the bracket 112 through bearings, a gear 114 is set on the fixed shaft 113, and a device for driving the fixed shaft is provided on the base 101. The motor 115 that the shaft 113 rotates, the motor 115, the first hydraulic cylinder 103, and the second hydraulic cylinder 109 are respectively connected to the controller 111 through lines, and cameras are respectively arranged at the front and rear ends of the base 101 119, the camera 119, the ultrasonic transmitter and the ultrasonic receiver are respectively connected to the controller 111 through lines.

In this embodiment, the fixing ring is set on the outside of the cable, so that the ultrasonic transmitter and the ultrasonic receiver are respectively located on both sides of the cable, and the opening of the fixing ring can be set upwards or downwards as required. During the movement of the overall structure, the ultrasonic transmitter sends an ultrasonic signal, which is reflected or refracted inside the cable and received by the ultrasonic receiver. By comparing the reference signal, it is judged whether there is a fault.

In this embodiment, vertical rods are respectively arranged on both sides of each moving support plate, and rollers are respectively arranged on the vertical rods, and the rollers are rotated and connected with respect to the upper ends of the vertical rods so that the axis of the rollers is perpendicular to the vertical rods. The vertical rods on both sides are located outside the two cables, so that the rollers on the vertical rods fit on the two cables. Due to the V-shaped groove structure, the rollers can be stably hung on the upper surface of the cables. After hooking the roller on the cable, make the gear on the bracket stick to the lower end surface of the cable, start the motor to drive the fixed shaft to rotate, the gear rotates relative to the cable, and under the action of friction, Drive the overall structure to move along the length of the cable. Since there are vertical rods and roller structures on both sides of the moving support plate, a rectangular structure can be formed on the cable, so that the bottom plate can be firmly hung on the cable, which helps to maintain its stability. For multi-strand cables The line structure arranged in parallel makes the gear under the middle cable, and when it is used for the inspection of two cables, the gear is located under one of the cables.

When encountering an obstacle, stop the operation of the motor, start the first hydraulic cylinder above the moving support plate at the front, and make the first hydraulic cylinder push the moving support plate to move longitudinally, so that the moving support plate moves. When the plate drives the vertical rod to move up, the corresponding rollers are released from the upper end of the cable. At this time, the second hydraulic cylinder under the moving support plate is activated to make it push the connecting rod to rotate. Driven by the connecting rod, the rotating shaft is relatively convex. The edge rotates, and the rotating shaft drives the pole to rotate until the roller at the upper end of the pole is completely outside the cable. At this time, the motor is started to make the overall structure continue to move along the length of the cable. When the roller group in the middle reaches the obstacle, Stop the operation of the motor, make the second hydraulic cylinder push the vertical rod on the front moving support plate to rotate relatively until the corresponding roller is above the cable, at this time, use the first hydraulic cylinder to push the moving support plate to move longitudinally until the roller hangs Connect it to the cable, and repeat the above operation for the roller group located in the middle, until the rollers above the three moving support plates have passed the obstacle.

The present invention adopts the above-mentioned structure, can easily realize overcoming obstacles, and can be used for inspection of cables provided with connectors. The real-time picture can be transmitted to the mobile terminal of the staff. The corresponding transmission module and mobile terminal can adopt the existing structure, which can realize the inspection of high-altitude cables, and the structure is safe and reliable. In the present invention, a brake can be set on the motor to facilitate the control of its operation.

In this embodiment, a positioning device is provided in the controller, and its positioning signal is sent to the mobile terminal in real time, so as to facilitate the positioning of the fault point of the cable.

Example 2:

In this embodiment, in order to facilitate the adjustment of the height of the gear so that it can fit on the cable better, preferably, a lifting plate 116 is arranged on the upper end surface of the base 101, and the lifting plate 116 is provided with a stud 117, the lower end of the stud 117 is fixedly connected to the base 101, the upper end of the stud 117 runs through the lifting plate 116, and the two sides of the lifting plate 116 Adjusting nuts 118 are arranged on the studs 117 respectively, and the motor 115 and the bracket 112 are respectively fixedly connected to the upper end surface of the lifting plate 116 . When needed, turn the adjusting nut to make the stud move longitudinally. During the longitudinal movement of the stud, the lifting plate is driven to move longitudinally, so that the height of the lifting plate can be adjusted, and then the height of the gear can be adjusted so that the gear can fit better. It fits under the cable and is suitable for different cables.

In the present invention, in order to adjust the height of the ultrasonic detection assembly as required, preferably, the lower end of the support rod 125 is fixedly connected to the lifting plate 116 . In the process of adjusting the gears, the height of the ultrasonic detection components is adjusted synchronously.

In this embodiment, the motor can drive the fixed shaft to rotate by means of gear transmission or belt transmission. Preferably, the fixed shaft 113 is provided with a sprocket 120, and the motor 115 drives the fixed shaft through a chain. The sprocket 120 rotates. A sprocket can be arranged on the rotating shaft of the motor, and a chain is used to connect the motor and the sprocket on the fixed shaft. In this embodiment, other transmission modes can also be adopted.

Example 3:

In order to increase the friction between the gear and the cable and make the overall structure more reliable, in this embodiment, preferably, the gears 114 are two symmetrically arranged on the fixed shaft 113, two The gears 114 are arranged symmetrically below the two sides of the cable.

In order to make the gear fit better on the cable, in this embodiment, further preferably, the gear 114 is a straight bevel gear. Fit the straight bevel gear under the sides of the cable.

Example 4:

In this embodiment, in order to prevent obstacles on the cable from colliding with the structure of the present invention, preferably, anti-collision modules 121 are respectively provided at the front and rear ends of the base 101, and the anti-collision modules 121 include The infrared emitter and the infrared receiver connected with the controller 111 by the line. When the infrared signal sent by the infrared transmitter is reflected back by the obstacle and received by the infrared receiver, it means that there is an obstacle, and the controller can drive the motor to stop. In this embodiment, other anti-collision modules can also be used.

In this embodiment, in order to increase the frictional force between the roller and the cable, preferably, an anti-slip tooth 122 is provided inside the V-shaped groove 108, and the anti-slip tooth 122 faces toward the V-shaped groove 108 Set on one side with a slant. The use of anti-slip teeth can increase the friction between the cable and the rollers, avoiding unnecessary movement of the rollers relative to the cables in strong winds and other conditions, and helping to maintain the stability of the overall structure.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (4)

1. A power cable fault detection device, characterized in that: it includes an ultrasonic detection component and a base (101) arranged below the ultrasonic detection component, and the ultrasonic detection component includes a fixing ring (123) and a The ultrasonic transmitter and ultrasonic receiver inside the fixed ring (123) are provided with an opening (124) on one side of the fixed ring (123), and the ultrasonic transmitter and the ultrasonic receiver are respectively Located on both sides of the opening (124), two support rods (125) are provided on the base (101), and mounting plates (126) are respectively provided outside the fixed ring (123), 2 The two mounting plates (126) are arranged symmetrically on both sides of the opening (124), respectively, and the two mounting plates (126) are fixedly connected to the support rods (125) by bolts respectively. There are three moving support plates (102) arranged under the base (101), the width of the moving support plates (102) is larger than the width of the base (101), and the moving support plates (102) ) are respectively provided with a first hydraulic cylinder (103), the bottom of the first hydraulic cylinder (103) is fixedly connected to the upper end surface of the mobile support plate (102), and the first hydraulic cylinder ( The telescopic rod of 103) is fixedly connected to the lower end surface of the base (101), and two flanges (104) are arranged on the side wall of the moving support plate (102), and the flanges (104) There is a rotating shaft (105) between them, and the two ends of the rotating shaft (105) are rotatably connected to the flange (104) through bearings, and a vertical rod (106) is set on the rotating shaft (105). The end of the vertical rod (106) away from the rotating shaft (105) is provided with a roller (107), and the middle part of the roller (107) is recessed inward to form a V-shaped groove (108). It can be hooked on the cable, and two second hydraulic cylinders (109) are arranged at the bottom of each moving support plate (102), and a connecting rod (110) is arranged at the middle of the rotating shaft (105). One end of the second hydraulic cylinder (109) is hinged on the lower end surface of the moving support plate (102), and the other end of the second hydraulic cylinder (109) is rotatably connected to the connecting rod (110), A controller (111) is set on the upper end surface of the base (101), a bracket (112) is set on the upper end surface of the base (101), and a fixed shaft ( 113), the two ends of the fixed shaft (113) are rotatably connected to the bracket (112) through bearings, a gear (114) is set on the fixed shaft (113), and the base ( 101) is provided with a motor (115) for driving the fixed shaft (113) to rotate, the motor (115), the first hydraulic cylinder (103), and the second hydraulic cylinder (109) communicate with the The above-mentioned controller (111) is connected, and cameras (119) are respectively arranged at the front and rear ends of the base (101), and the camera (119), ultrasonic transmitter and ultrasonic receiver communicate with the The controller (111) is connected; a lifting plate (116) is set on the upper end surface of the base (101), and a stud (117) is set on the lifting plate (116), and the stud The lower end of (117) is fixedly connected to the base (101), the upper end of the stud (117) runs through the lifting plate (116), and the two sides of the lifting plate (116) The studs (117) are respectively provided with adjusting nuts (118), and the motor (115) and the bracket (112) are respectively fixedly connected to the upper end surface of the lifting plate (116); A sprocket (120) is arranged on the fixed shaft (113), and the motor (115) drives the sprocket (120) to rotate through a chain; the lower end of the support rod (125) is fixedly connected to the lift on the plate (116); the gears (114) are two symmetrically arranged on the fixed shaft (113), and the two said gears (114) are respectively arranged symmetrically under the two sides of the cable. 2. A power cable fault detection device according to claim 1, characterized in that: the gear (114) is a straight bevel gear. 3. A power cable fault detection device according to claim 1 or 2, characterized in that: anti-collision modules (121) are respectively provided at the front and rear ends of the base (101), and the anti-collision modules (121) The collision module (121) includes an infrared transmitter and an infrared receiver respectively connected to the controller (111) through lines. 4. A power cable fault detection device according to claim 3, characterized in that: an anti-slip tooth (122) is provided inside the V-shaped groove (108), and the anti-slip tooth (122) faces One side of the V-shaped groove (108) is inclined.