Portable nondestructive testing equipment for internal defects of main insulation of cable

Abstract

The utility model discloses portable nondestructive testing equipment for cable main insulation internal defects, which relates to the technical field of cable testing equipment, and comprises a testing equipment main body and a box body, the testing equipment main body is arranged in the box body, the upper end of the box body is opened and is provided with a box cover, the testing equipment main body is arranged on a bottom plate, and the box cover is arranged on the bottom plate. The bottom plate freely moves in the height direction of the box body through the lifting handle, a spring lock pin structure is arranged on the upper portion of the inner wall of the box body, and when the bottom plate ascends to a certain height, a spring bolt automatically pops up under the action of a spring to block the lower portion of the bottom plate, so that position locking of the detection equipment body is achieved. According to the utility model, through a nondestructive testing technology, multi-angle scanning can be carried out on internal defects of main insulation of the cable, real-time data can be obtained, and the cable detection device is suitable for cable detection in a narrow space and a complex environment, and is high in portability and simple and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of cable detection equipment, in particular to a portable non-destructive detection device for internal defects of cable main insulation. Background Art

[0002] During cable operation, internal defects such as bubbles and cracks may develop in the main insulation of a cable. These defects can affect the normal operation of the cable and may cause serious failures. Therefore, timely detection and repair of these defects is crucial to ensuring the safe operation of the cable. Currently, traditional cable inspection methods have shortcomings such as lack of portability and complex operation, which cannot meet the inspection requirements in complex working environments and confined spaces. To address these issues, a portable nondestructive inspection device for internal defects in the main insulation of cables is proposed to achieve efficient detection of internal defects in the main insulation of cables. Utility Model Content

[0003] In order to solve the above technical problems, the present invention proposes a portable non-destructive detection device for internal defects of cable main insulation, which adopts the following technical solutions:

[0004] A portable nondestructive testing device for internal defects in the main insulation of a cable comprises a testing device body and a housing. The testing device body is disposed within the housing, the upper end of the housing being open and provided with a housing cover. The testing device body is mounted on a bottom plate that matches the shape of the interior of the housing and is used to drive the testing device body to freely move along the height direction of the housing. Lifting handles are symmetrically provided on both sides of the upper end surface of the bottom plate for lifting the bottom plate along the height direction of the housing to allow the testing device body to extend from the interior of the housing.

[0005] A plurality of spring lock pin structures are provided above the inner walls on opposite sides of the box body. The spring lock pin structures can be extended and retracted on the inner walls. When the bottom plate rises to a height exceeding the height of the spring lock pin structures, the spring lock pin structures pop out and block the bottom of the bottom plate to prevent the bottom plate from falling, thereby locking the position of the main body of the detection equipment;

[0006] The lower end surface of the bottom plate is provided with an unlocking mechanism for pushing the spring lock pin back to the inner wall of the box body to unlock the spring lock pin structure.

[0007] Furthermore, the spring lock pin structure includes a lock tongue, a spring and a limiting hole. The limiting hole is opened on the inner wall of the box body, and the lock tongue is arranged in the limiting hole. The lock tongue is an inverted right-angled trapezoid, and the size is adapted to the limiting hole. The spring is located at the rear of the lock tongue, and a spring groove is opened in the limiting hole. One end of the spring is fixed in the spring groove, and the other end is fixed to the rear end of the lock tongue.

[0008] Furthermore, the unlocking mechanism includes two gears mounted on the lower end of the base plate. The gears' positions on the base plate correspond to the positions of the pull handles, which extend through the base plate and are fixed to the center of the gears, driving the gears' rotation. Each gear is engaged with a rack perpendicular to the inner wall of the case on either side, parallel to the inner wall of the case. The ends of the two racks are located near opposite sides of the case. When the gears rotate, the two racks move in opposite directions.

[0009] A T-shaped slot is provided on the lower end surface of the bottom plate, and the T-shaped slot is arranged along the movement direction of the rack. A T-shaped slider adapted to the T-shaped slot is provided on the side of the rack, and the T-shaped slider is embedded in the T-shaped slot;

[0010] The horizontal position of the spring lock pin structure on the inner wall of the box is consistent with the projection position of the rack on the inner wall.

[0011] Furthermore, a plurality of shallow grooves are provided on the inner wall of the box body. The shallow grooves are provided below the limiting holes. The shallow grooves are vertically downward, and the width of the shallow grooves is consistent with the width of the rack.

[0012] Furthermore, the box cover is rotatably connected to the box body on one side, and is connected to the box body on the other side via a locking mechanism, and a handle is provided on the upper end surface of the box cover.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The utility model sets the nondestructive testing equipment in a box, which has a compact design and is easy to carry. It is particularly suitable for use in field operations or other working environments with high mobility requirements.

[0015] 2. This utility model uses a spring-loaded locking pin structure that automatically pops out when the base plate reaches a specific height, locking the main body of the device and preventing it from falling. At the same time, this structure does not hinder the ascent of the main body of the device. The base plate contacts the inclined surface of the locking pin, pushing the locking pin back into the limit hole, ensuring a smooth ascent of the device.

[0016] 3. The utility model can easily unlock the spring lock pin structure by utilizing the cooperation of the gear and the rack, and push the lock tongue back into the limit hole to achieve the unlocking operation, which is simple and effective to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the initial state in the embodiment of the present utility model;

[0018] Figure 2 It is a schematic diagram of the working state in the embodiment of the utility model;

[0019] Figure 3 This is a side sectional view of the box body in the embodiment of the utility model;

[0020] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle;

[0021] Figure 5 is a schematic diagram of an unlocking mechanism in an embodiment of the present utility model;

[0022] Figure 6 This is a schematic diagram of a box in an embodiment of the present utility model;

[0023] Figure 7 It is a front sectional view of the box body in the embodiment of the present utility model.

[0024] The accompanying drawings are numerals: 1. Detection equipment body; 2. Node; 3. Driving beam; 4. Track; 5. Straight-moving small tank; 6. Fixed bracket; 7. Ear plate; 8. Booster; 9. Track clamp; 10. Rib plate; 11. Limit plate. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technology in the embodiments of the present invention; it is obvious that the embodiments described are only part of the embodiments of the present invention, not all of the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative work should fall within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other if there is no conflict.

[0026] Reference Figures 1 to 7 This embodiment provides a portable nondestructive testing device for internal defects in the main insulation of a cable, comprising a testing device body 1 and a box body 2. The testing device body 1 is disposed inside the box body 2. The upper end of the box body 2 is open and provided with a box cover 3. The testing device body 1 is mounted on a bottom plate 4. The bottom plate 4 matches the internal shape of the box body 1 and is used to drive the testing device body 1 to move freely along the height direction of the box body 2. Lifting handles 5 are symmetrically provided on both sides of the upper end surface of the bottom plate 4 for lifting the bottom plate along the height direction of the box body 2 to enable the testing device body 1 to extend from the inside of the box body 2.

[0027] A plurality of spring lock pin structures are provided above the inner walls on opposite sides of the box body 2. The spring lock pin structures can be extended and retracted on the inner walls of the box body 2. When the bottom plate 4 rises to a height exceeding the height of the spring lock pin structures, the spring lock pin structures pop out and block the bottom of the bottom plate 4 to prevent the bottom plate 4 from falling, thereby locking the position of the detection device body 1;

[0028] The lower end surface of the bottom plate 4 is provided with an unlocking mechanism for pushing the spring lock pin structure back to the inner wall of the box body 2 to unlock the spring lock pin structure.

[0029] Specifically, the spring lock pin structure includes a lock tongue 6, a spring 7 and a limiting hole 8. The limiting hole 8 is opened on the inner wall of the box body 2, and the lock tongue 6 is arranged in the limiting hole 8. The lock tongue 6 is an inverted right-angled trapezoid, and its size is adapted to the limiting hole 8. The spring 7 is located at the rear of the lock tongue 6, and a spring groove 9 is opened in the limiting hole 8. One end of the spring 7 is fixed in the spring groove 9, and the other end is fixed to the rear end of the lock tongue 6.

[0030] Reference Figure 4 When the bottom plate 4 rises to a height exceeding the height of the spring lock pin structure, the lock tongue 6 pops out under the thrust of the spring 7 to block the bottom of the bottom plate 4, and the bottom of the lock tongue 6 is an inclined surface. When the bottom plate 4 rises, it will contact the inclined surface of the lock tongue 6 to push the lock tongue 6 back into the limiting hole 7, and will not block the upward movement of the detection device body 1, ensuring that the detection device body 1 can be extended from the box body 2 to perform cable section detection. The limiting holes are provided on opposite sides of the inner wall of the box and cooperate with the lock tongue. When the equipment reaches the specified height, the lock tongue pops out and blocks the bottom of the bottom plate, thereby preventing the bottom plate from falling and realizing locking the position of the detection equipment. The inclined surface of the lock tongue 6 is smoothed to reduce the friction when the bottom plate 4 contacts the lock tongue 6, ensuring that the lifting process of the bottom plate 4 is smoother;

[0031] The spring 7 is located at the rear of the lock tongue 6, providing elastic thrust for the lock tongue 6, ensuring that the lock tongue 6 can pop out automatically and be pressed back to the inner wall of the box body 2 through the action of the unlocking mechanism when unlocking. The limiting holes 8 are set on opposite sides of the inner wall of the box body 2, cooperating with the lock tongue 6. When the bottom plate 4 reaches the specified height, the lock tongue 8 pops out and blocks the bottom of the bottom plate, thereby preventing the bottom plate 4 from falling, thereby realizing locking the position of the detection equipment.

[0032] Specifically, the unlocking mechanism includes two gears 10 disposed on the lower end surface of the base plate. The positions of the gears 10 on the base plate 4 correspond to the positions of the lifting handle 5. The lifting handle 5 extends through the base plate 4 and is fixedly connected to the center of the gears 10, driving the gears 10 to rotate. Each gear 10 is meshed with a rack 11 perpendicular to the inner wall of the box 2 on its left and right sides, parallel to the inner wall of the box 2. The ends of the two racks 11 are respectively close to two opposing surfaces of the inner wall of the box 2. When the gear 10 rotates, the two meshing racks 11 move in opposite directions.

[0033] The bottom surface of the bottom plate 4 is provided with a T-shaped slot 12, and the T-shaped slot 12 is arranged along the movement direction of the rack 11. The side of the rack 11 is provided with a T-shaped slider adapted to the T-shaped slot 12, and the T-shaped slider is embedded in the T-shaped slot 11;

[0034] The horizontal position of the spring lock pin structure on the inner wall of the box body 2 is consistent with the projection position of the rack 11 on the inner wall of the box body 2 .

[0035] Reference Figure 5 When the gear 10 rotates, the two racks 11 will move in opposite directions. Figure 4 When the spring lock pin structure blocks the bottom plate 4, the rack 11 and the lock tongue 6 are in the same horizontal plane. Since the horizontal position of the spring lock pin structure on the inner wall of the box body 2 is consistent with the projection position of the rack 11 on the inner wall of the box body 2, as the rack 11 moves, the end of the rack will contact the inclined surface of the lock tongue 6. The movement direction of the rack will push the lock tongue 6 to move backward along the direction of the limiting hole 8. The lock tongue 6 will retreat into the limiting hole 8 under the action of the rack 11, thereby releasing the lock of the spring lock pin structure on the bottom plate 4;

[0036] The T-slot 12 fixes the position of the rack 11 without affecting its movement. The rack 11 can slide in the T-slot 12 along its movement direction.

[0037] from Figure 5 It can be seen that in the initial position, the end of the rack 11 is at a certain distance from the edge of the base plate 4, which ensures that the tooth 11 does not hinder the pop-up of the lock tongue 6, ensuring that the spring lock pin structure works normally to block the base plate 4.

[0038] Specifically, the inner wall of the housing 2 is provided with a plurality of shallow grooves 13, which are provided below the stop hole 8. The shallow grooves 13 are vertically downward, and their width is consistent with the width of the rack 11. The groove depth is moderate, not exceeding 1 / 3 of the length of the trapezoidal upper base of the lock tongue, to prevent the rack 11 from colliding with the lower edge of the stop hole 8 during the equipment recovery process. The shallow grooves 13 provide appropriate space for the vertical movement of the rack 11, while ensuring that the lock tongue 6 can firmly support the bottom plate and prevent it from falling.

[0039] Specifically, the box cover 3 is rotatably connected to the box body 2 on one side, and is connected to the box body 2 on the other side via a locking mechanism 14 . A handle 15 is provided on the upper end surface of the box cover 3 .

[0040] The working principle of this embodiment is as follows:

[0041] When it is necessary to use this device to perform non-destructive testing on the internal defects of the cable main insulation, the user first lifts the detection device body 1 out of the box body 2 by pulling the handle 5. As the bottom plate 4 rises, the detection device body 1 gradually extends from the box body 2. When the bottom plate 4 rises to a certain height, the bottom plate 4 will first contact the inclined surface of the lock tongue 6 and push it back to the limit hole 8. When the height position of the bottom plate 4 exceeds the lock tongue 6, the lock tongue 6 automatically pops out under the action of the spring 7 and blocks the bottom of the bottom plate 4 to prevent the bottom plate 4 from falling. At this time, the detection device body 1 has been extended from the box body 2 and is firmly locked in the working position. The device can perform multi-angle scanning or detection on the main insulation part of the cable. Through the detection components inside the device, the device can obtain the defect information inside the main insulation of the cable in real time and transmit these data to the background for processing.

[0042] When the test is complete, the user rotates the lifting handle 5, which drives the gear 10 on the lower end surface of the bottom plate 4 to rotate, causing the rack 11 to move in the opposite direction, pushing the inclined surface of the lock tongue 6, pressing the lock tongue 6 back into the limit hole 8, and releasing the lock on the bottom plate 4. The user continues to lower the bottom plate 4, allowing the detection device body 1 to return to the interior of the box body 2, and finally locks the box cover 3 through the locking mechanism 14, completing the entire test process.

[0043] With this device, users can perform fast and convenient non-destructive testing on the main insulation of cables. It is particularly suitable for use in small spaces or complex working environments.

Claims

1. A portable nondestructive testing device for internal defects in the main insulation of a cable, comprising a testing device body and a housing. The testing device body is disposed within the housing, the upper end of the housing being open and provided with a housing cover. The testing device body is mounted on a base plate that matches the internal shape of the housing and is used to drive the testing device body to freely move along the height direction of the housing. The device is characterized by: Lifting handles are symmetrically provided on both sides of the upper end surface of the bottom plate, which are used to lift the bottom plate along the height direction of the box body so that the main body of the detection device can be extended from the inside of the box body; A plurality of spring lock pin structures are provided above the inner walls on opposite sides of the box body. The spring lock pin structures can be extended and retracted on the inner wall of the box body. When the bottom plate rises to a height exceeding the height of the spring lock pin structures, the spring lock pin structures pop out and block the bottom of the bottom plate to prevent the bottom plate from falling, thereby locking the position of the main body of the detection device; The lower end surface of the bottom plate is provided with an unlocking mechanism for pushing the spring lock pin structure back to the inner wall of the box body to unlock the spring lock pin structure.

2. A portable non-destructive testing device for internal defects of cable main insulation according to claim 1, characterized in that: The spring lock pin structure includes a lock tongue, a spring and a limiting hole. The limiting hole is opened on the inner wall of the box. The lock tongue is arranged in the limiting hole. The lock tongue is an inverted right-angled trapezoid and its size is adapted to the limiting hole. The spring is located at the rear of the lock tongue. A spring groove is opened in the limiting hole. One end of the spring is fixed in the spring groove, and the other end is fixed to the rear end of the lock tongue.

3. A portable non-destructive testing device for internal defects of cable main insulation according to claim 2, characterized in that: The unlocking mechanism includes two gears arranged on the lower end surface of the bottom plate. The position of the gears on the bottom plate corresponds to the position of the lifting handle. The lifting handle passes through the bottom plate and is fixed to the center of the gears, which is used to drive the gears to rotate. Each gear is engaged with a rack perpendicular to the inner wall of the box on both sides of the direction parallel to the inner wall of the box, and the ends of the two racks are close to two opposite surfaces of the inner wall of the box. A T-shaped slot is provided on the lower end surface of the bottom plate, and the T-shaped slot is arranged along the movement direction of the rack. A T-shaped slider adapted to the T-shaped slot is provided on the side of the rack, and the T-shaped slider is embedded in the T-shaped slot; The horizontal position of the spring lock pin structure on the inner wall of the box is consistent with the projection position of the rack on the inner wall.

4. A portable non-destructive testing device for internal defects of cable main insulation according to claim 3, characterized in that: A plurality of shallow grooves are provided on the inner wall of the box body. The shallow grooves are provided below the limiting holes. The shallow grooves are vertically downward, and the width of the shallow grooves is consistent with the width of the rack.

5. A portable non-destructive testing device for internal defects of cable main insulation according to any one of claims 1 to 4, characterized in that: The box cover is rotatably connected to one side of the box body, and the other side is connected to the box body through a locking mechanism. A handle is provided on the upper end surface of the box cover.

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