Wire detector for electric power facility

Abstract

The invention relates to the field of wire stretch rate detection, in particular to a wire detector for electric power facilities, which comprises an electric turntable, a clamping piece, a connecting piece, a first pushing piece and a U-shaped piece, the two first movable sliding blocks are each provided with an electric rotating disc. The electric rotating disc is provided with a plurality of clamping pieces used for clamping and fixing a wire sheath. A first pushing piece is mounted on the mounting plate through a connecting piece, and a telescopic part of the first pushing piece is fixedly connected with a U-shaped piece; the U-shaped piece is located in the middle of the two electric rotating discs. A plurality of smearing blocks are installed in the open groove of the U-shaped piece, and multi-point marking is carried out on the wire skin through the smearing blocks. According to the invention, the plurality of clamping pieces with the elastic telescopic blocks are arranged, so that when the tensile diameter of the wire skin is reduced, the clamping pieces can cooperatively work to maintain the clamping force, and the wire skin is prevented from slipping off; and part of the wire skin is wound on the electric turntable containing groove which is provided with the rubber layer or is frosted, so that the friction force is increased, part of the drawing force is counteracted, the problem of failure of soft clamping is solved, and the wire skin is prevented from being damaged by hard clamping.

Description

Technical Field

[0001] The present invention relates to the field of wire elongation detection, and particularly to a wire detector for power facilities. Background Art

[0002] Many wires are used in power facilities. To ensure the normal operation of the wires, it is necessary to detect the elongation rate of the wire sheath.

[0003] When the existing wire sheath is stretched, its diameter will become smaller. There are two problems. One is that the fixture using soft extrusion clamping cannot clamp the wire sheath when its diameter becomes smaller during stretching. The other is that the fixture using hard extrusion clamping will deform the clamped part of the wire sheath, making the wire sheath prone to break at the clamped part. As a result, the stretching detection cannot be carried out normally. At the same time, when detecting the elongation rate of the wire sheath of the wire, after the wire sheath is broken, the wire sheath will bend, which makes it difficult to measure the length of the wire sheath after stretching, and thus leads to an incorrect calculation of the elongation rate of the wire sheath. In view of the above problems, the present invention is specifically proposed. Summary of the Invention

[0004] In order to overcome the two major problems existing in the wire sheath stretching detection: one is that the soft extrusion clamping fixture cannot be clamped due to the decrease in the diameter of the wire sheath during stretching; the other is that the hard extrusion clamping fixture is prone to deform the wire sheath and cause it to break at the clamped part, resulting in the obstruction of the stretching detection. The present invention provides a wire detector for power facilities.

[0005] The technical implementation scheme of the present invention is as follows: A wire detector for power facilities includes a mounting plate, a first linear guide rail, and a first moving slider. The first linear guide rail is installed on the side of the mounting plate; two first moving sliders are slidably connected to the first linear guide rail, and the two first moving sliders are located on both sides of the first linear guide rail. It further includes an electric turntable, a clamping member, a connecting member, a first pushing member, and a U-shaped member; electric turntables are installed on both first moving sliders; a plurality of clamping members for clamping and fixing the wire sheath are installed on the electric turntables; the mounting plate is installed with a first pushing member through a connecting member, and the telescopic part of the first pushing member is fixedly connected with a U-shaped member; the U-shaped member is located in the middle position between the two electric turntables; a plurality of coating blocks are installed in the slot of the U-shaped member, and the wire sheath is marked at multiple points through the coating blocks.

[0006] Further explanation, a receiving groove adapted to the wire sheath is opened on the outer ring surface of the electric turntable, and a rubber layer is provided in the receiving groove to increase the friction with the wire sheath.

[0007] Further explanation, a receiving groove adapted to the wire sheath is opened on the outer ring surface of the electric turntable, and the receiving groove is subjected to frosted treatment to increase the friction with the wire sheath.

[0008] Further explanation: An arc-shaped limiting housing is arranged between adjacent clamping members, and the arc-shaped limiting housing is fixedly connected to the electric turntable.

[0009] Further explanation: The clamping member clamps the wire sheath through an elastic telescopic block.

[0010] Further explanation: The side of the elastic telescopic block in contact with the wire sheath is set as a plane.

[0011] Further explanation: The clamping member near the middle position of the wire sheath on the electric turntable is not provided with an elastic telescopic block, but an inflatable airbag is provided; and a magnetic attraction block is fixedly connected to one side of the clamping member, and the magnetic attraction block is magnetically attracted to the electric turntable.

[0012] Further explanation: It further includes a connecting frame, a detector, a second linear guide rail, a second moving slider, a second pushing member and a perforated plate; a connecting frame is fixedly connected to one side of the mounting plate; a detector is installed on the connecting frame, and the detector faces the wire sheath; a second linear guide rail is installed on the connecting frame, and two second moving sliders are slidably connected to the second linear guide rail, and the two second moving sliders are located on both sides of the second linear guide rail; a plurality of second pushing members are fixedly connected to the second moving slider; a perforated plate is fixedly connected to the clamping member for installing the inflatable airbag; the telescopic part of the second pushing member can be inserted into the hole of the perforated plate.

[0013] Further explanation: An electromagnet is arranged inside the electric turntable, and the magnetic attraction block is attracted by the electromagnet.

[0014] Further explanation: A semi-circular notch is provided on the side of the inflatable airbag in contact with the wire sheath. In the present invention, by arranging a plurality of clamping members with elastic telescopic blocks, when the diameter of the wire sheath becomes smaller due to stretching, they can work together to maintain the clamping force and prevent the wire sheath from slipping; and part of the wire sheath is wound on the accommodating groove of the electric turntable with a rubber layer or frosted treatment, increasing the friction force and offsetting part of the tensile force, which not only solves the problem of soft clamping failure but also avoids damaging the wire sheath by hard clamping.

[0015] The electric turntable of the present invention keeps the marking point at a distance from the clamping member, avoiding the influence of the diameter change of the wire sheath near the fixture end on the detection accuracy; after being pulled off, the inflatable airbag clamping member and related components are used to straighten the bent wire sheath, and cooperate with the detector to measure the distance of the marking point and calculate the elongation rate, without manual measurement or high-precision camera to capture the picture, reducing the technical requirements for the detection equipment, improving the measurement accuracy and reducing the workload of the detection personnel.

[0016] When the wire sheath breaks at the marking point in the present invention, the overall elongation rate can be measured by averaging the distances of the marking points in the non-pulled-off area, ensuring the feasibility and accuracy of the elongation rate measurement. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram disclosed by the present invention; Figure 2 For Figure 1 the enlarged view of part A; Figure 3 This is the state diagram after the two electric turntables disclosed in the present invention move towards each other; Figure 4 This is the schematic diagram of the partial structure disclosed in the present invention; Figure 5 This is the cross-sectional view of the U-shaped part disclosed in the present invention; Figure 6 This is the schematic diagram of the combined structure of the electric turntable and the clamping part disclosed in the present invention; Figure 7 This is the exploded view of the arc-shaped limiting housing exploded in the present invention; Figure 8 This is the state diagram when the clamping part with the installed inflatable airbag moves downward in the present invention; Figure 9 This is the schematic diagram of the structure of the elastic telescopic block, the inflatable airbag, and the magnetic attraction block disclosed in the present invention; Figure 10 This is the schematic diagram of the uneven diameters of the wire skins at both ends when the wire skin of the prior art is stretched.

[0018] In the figure: 1 - mounting plate, 2 - first linear guide rail, 3 - first moving slider, 4 - electric turntable, 5 - clamping part, 5a - arc-shaped limiting housing, 6 - connecting piece, 7 - first pushing piece, 8 - U-shaped part, 8a - smearing block, 5b - elastic telescopic block, 5c - inflatable airbag, 5d - magnetic attraction block, 201 - connecting frame, 202 - detector, 203 - second linear guide rail, 204 - second moving slider, 205 - second pushing piece, 206 - perforated plate, 100 - wire skin, 100a - marking point. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Embodiment 1: A wire detector for power facilities, as Figures 1-10 shown, includes a mounting plate 1, a first linear guide rail 2, and a first moving slider 3; The first linear guide rail 2 is installed on the side of the mounting plate 1; two first moving sliders 3 are slidably connected to the first linear guide rail 2, and the two first moving sliders 3 are located on both sides of the first linear guide rail 2, taking Figure 1 the angle as the reference, that is, the upper and lower sides; It also includes an electric turntable 4, a clamping member 5, a connecting member 6, a first pushing member 7 and a U-shaped member 8; the two first movable sliders 3 are each equipped with an electric turntable 4; a plurality of clamping members 5 for clamping and fixing the wire skin are installed on the electric turntable 4, and the clamping members 5 are arranged on the electric turntable 4 in an arc shape as a whole; the mounting plate 1 is equipped with a first pushing member 7 through the connecting member 6, and the telescopic part of the first pushing member 7 is fixedly connected to the U-shaped member 8; the U-shaped member 8 is located in the middle position of the two electric turntables 4; a plurality of smear blocks 8a are installed in the slot of the U-shaped member 8, and the wire skin is marked at multiple points by the smear blocks 8a.

[0021] An accommodating groove adapted to the wire skin is provided on the outer ring surface of the electric turntable 4, and a rubber layer is arranged in the accommodating groove to increase the friction with the wire skin.

[0022] The outer ring surface of the electric turntable 4 is provided with a receiving groove adapted to the wire skin, and the receiving groove is frosted to increase the friction with the wire skin.

[0023] An arc-shaped limiting housing 5 a is provided between adjacent clamping members 5 , and the arc-shaped limiting housing 5 a is fixedly connected to the electric turntable 4 .

[0024] like Figure 9 As shown, the clamping member 5 clamps the wire sheath through the elastic telescopic block 5b. The elastic telescopic block 5b contracts when the wire sheath is installed, and softly squeezes the wire sheath when clamping the wire sheath.

[0025] The side of the elastic expansion block 5b in contact with the wire skin is set to be a plane, so that the wire skin with a reduced diameter can be squeezed.

[0026] When the wire sheath is stretched, its diameter will become smaller. There are problems. First, the use of a soft extrusion clamp will make it impossible to clamp the wire sheath when the diameter of the wire sheath becomes smaller after being stretched. Second, the use of a hard extrusion clamp will cause the clamped part of the wire sheath to be deformed, making it easy for the wire sheath to break at the clamping part; this will result in the inability to perform the stretching test normally. At the same time, when the wire sheath is tested for its stretching rate, the wire sheath will bend after being broken, which makes it difficult to measure the length of the wire sheath after stretching, and thus leads to errors in the calculation of the stretching rate of the wire sheath. In view of the above problems, the present invention is specially proposed.

[0027] When the present invention is working, the staff installs the wire sheath 100 on the two electric turntables 4. The ends of the wire sheath 100 are fixed by a plurality of clamping members 5. At the same time, an arc-shaped limiting housing 5a is provided between adjacent clamping members 5, so that the staff can easily pass the wire sheath into the clamping members 5. After the wire sheath passes into the clamping members 5, all the clamping members 5 are controlled to work and clamp the wire sheath. Figure 1As shown in the figure, control the two first moving sliders 3 to move away from each other on the first linear guide 2 to straighten the wire sheath to prevent it from bending. Then, control the telescopic part of the first pusher 7 to push the U-shaped part 8 and the coating block 8a towards the wire sheath 100. The wire sheath is clamped into the slot of the U-shaped part 8. At the same time, the wire sheath contacts the coating block 8a, so as to apply multiple marking points 100a on the wire sheath. Then, control the upper electric turntable 4 to rotate counterclockwise and the lower electric turntable 4 to rotate clockwise. At the same time, the two first moving sliders 3 move towards each other on the first linear guide 2, so that the present invention changes from Figure 1 state to Figure 3 state. At this time, not only both ends of the wire sheath are fixed by the clamping parts 5, but also a certain length of the wire sheath is wound around the receiving groove of the electric turntable 4.

[0028] After that, as Figure 3 shown, control the two first moving sliders 3 to move away from each other on the first linear guide 2 to continuously stretch the wire sheath until the wire sheath is broken. Further, during the stretching process of the wire sheath, the diameter of the wire sheath continuously becomes smaller. At this time, the present invention clamps the wire sheath by setting multiple clamping parts 5, and at the same time, softly squeezes the wire sheath through the elastic telescopic blocks 5b, so that even if the diameter of the wire sheath becomes smaller when it is stretched in one of the clamping parts 5, there are still other clamping parts 5 to maintain the clamping and stretching work of the wire sheath. And the clamping part 5 at the diameter-reduced part can adjust the protruding distance of the elastic telescopic block 5b again to continue the clamping work on the wire sheath with a smaller diameter. In this way, through the coordinated work of multiple clamping parts 5, the clamping force on the wire sheath can be avoided from being lost, resulting in the inability of the electric turntable 4 to stretch the wire sheath. At the same time, the present invention winds part of the wire sheath around the receiving groove of the electric turntable 4. Since a rubber layer is provided in the receiving groove or the inner diameter of the receiving groove is treated by sandblasting, the friction force between the wire sheath and the receiving groove is large, and this part of the friction force can be used to offset part of the tensile force.

[0029] After the wire sheath is broken, by measuring the length change of the wire sheath between the marking points, the elongation rate of the wire sheath can be obtained. It should be noted that, as Figure 10 shown, when the wire sheath is stretched by two existing fixtures, the diameter of the side of the wire sheath close to the fixture is not uniformly stretched, and there will be a problem that the diameter is larger closer to the fixture end. In the present invention, by setting the electric turntable 4 and winding part of the wire sheath around the receiving groove of the electric turntable 4 before stretching the wire sheath, the marking points 100a can be at a certain distance from the clamping parts 5, so that the section of the wire sheath with a changing diameter after being stretched does not appear in the area of the marking points 100a, thus avoiding affecting the accuracy of the wire sheath stretching detection.

[0030] Embodiment 2: On the basis of Embodiment 1, as Figures 1-10As shown, the clamping member 5 near the middle position of the wire sheath 100 on the electric turntable 4 is not provided with an elastic telescopic block 5b, but an inflatable airbag 5c is provided; and a magnetic attraction block 5d is fixedly connected to one side of the clamping member 5, and the magnetic attraction block 5d is magnetically attracted to the electric turntable 4.

[0031] It further includes a connecting frame 201, a detector 202, a second linear guide rail 203, a second moving slider 204, a second pushing member 205 and a perforated plate 206; a connecting frame 201 is fixedly connected to one side of the mounting plate 1; a detector 202 is installed on the connecting frame 201, and the detector 202 faces the wire sheath 100; a second linear guide rail 203 is installed on the connecting frame 201, and two second moving sliders 204 are slidably connected to the second linear guide rail 203, and the two second moving sliders 204 are located on both sides of the second linear guide rail 203; a plurality of second pushing members 205 are fixedly connected to the second moving slider 204; a perforated plate 206 is fixedly connected to the clamping member 5 where the inflatable airbag 5c is installed; the telescopic part of the second pushing member 205 can be inserted into the holes of the perforated plate 206.

[0032] An electromagnet is provided inside the electric turntable 4, and the magnetic attraction block 5d is attracted by the electromagnet.

[0033] A semi-circular notch is provided on the side of the inflatable airbag 5c in contact with the wire sheath. By inflating and expanding the inflatable airbag 5c, the wire sheath can be straightened better.

[0034] After the stretching work of the wire sheath is completed and the wire sheath is broken, control the electric turntable 4 to rotate and reset. The upper electric turntable 4 is as Figure 2The state shown is when the perforated plate 206 faces the telescopic part of the second pusher 205. Since the wire sheath is broken, the broken part of the wire sheath will bend, making it difficult to accurately measure the length after stretching. At this time, the telescopic part of the second pusher 205 can be controlled to push out and insert into the perforated plate 206. Then, the second moving slider 204 is controlled to move downward on the second linear guide 203, thereby driving the clamping member 5 with the inflatable airbag 5c, the magnetic attraction block 5d, and the perforated plate 206 to move downward. By inflating the inflatable airbag 5c, the inflatable airbag 5c limits the wire sheath. Thus, during the downward movement of the clamping member 5, the clamping member 5 can be used to straighten the wire sheath again. In this way, the detector 202 can be used to detect the marking points 100a and measure the distance between the marking points 100a, and at the same time compare it with the distance before the wire sheath is stretched, so that the stretching rate of the wire sheath between each segment of the marking points can be calculated. Similarly, for the broken wire sheath located below, since the wire sheath was initially limited by the clamping member 5 with the inflatable airbag 5c, controlling the clamping member 5 with the inflatable airbag 5c to move upward can straighten the wire sheath and cooperate with the detector 202 to detect the stretching rate of the wire sheath on the lower side. Further, when the wire sheath breaks at the marking point 100a, it will be impossible to calculate the stretching rate of the overall marked area of the wire sheath. In the present invention, the stretching rate of the overall marked area can be measured by averaging the distances between the marking points 100a in all unbroken areas, thus obtaining the stretching rate of the wire sheath. Moreover, the present invention does not require an operator to hold a ruler to measure the stretching rate of the wire sheath on the side, greatly reducing the workload of the inspectors. And by detecting the wire sheath after stretching and breaking with the detector 202, it is not necessary to configure a high-definition and high-precision camera to capture the picture of the moment when the wire sheath breaks and calculate through the picture, greatly improving the measurement accuracy and convenience of the stretching rate, and having low technical requirements for the detection equipment, enabling widespread popularization.

[0035] It should be noted that after calculating the stretching rate of the stretching detection, the clamping of the wire sheath by the clamping member 5 is controlled to be cancelled, and then the operator takes out the wire sheath. After that, the second moving slider 204 is controlled to move and reset on the second linear guide 203, driving the magnetic attraction block 5d to be magnetically attracted to the electric turntable 4 again. Then, the telescopic part of the second pusher 205 retracts and no longer inserts into the perforated plate 206.

[0036] The above embodiments are provided for those skilled in the art to implement or use the present invention. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited by the above embodiments, but should be the maximum scope that conforms to the innovative features mentioned in the claims.

Claims

1. A wire detector for power facilities, comprising a mounting plate (1), a first linear guide rail (2) and a first moving slider (3); the first linear guide rail (2) is mounted on the side of the mounting plate (1); two first moving sliders (3) are slidably connected to the first linear guide rail (2), and the two first moving sliders (3) are located on both sides of the first linear guide rail (2). It is characterized in that It further comprises an electric turntable (4), a clamping member (5), a connecting member (6), a first pushing member (7) and a U-shaped member (8); electric turntables (4) are mounted on both of the two first moving sliders (3); a plurality of clamping members (5) for clamping and fixing the wire sheath are mounted on the electric turntable (4); the mounting plate (1) is mounted with a first pushing member (7) through the connecting member (6), and the telescopic part of the first pushing member (7) is fixedly connected with the U-shaped member (8); the U-shaped member (8) is located at the middle position between the two electric turntables (4); a plurality of coating blocks (8a) are mounted in the slot of the U-shaped member (8), and the wire sheath is marked at multiple points through the coating blocks (8a).

2. The wire detector for power facilities according to claim 1, wherein, A receiving groove adapted to the wire sheath is formed on the outer ring surface of the electric turntable (4), and a rubber layer is arranged in the receiving groove to increase the friction with the wire sheath.

3. A wire detector for power facilities according to claim 1, characterized in that, A receiving groove adapted to the wire sheath is formed on the outer ring surface of the electric turntable (4), and the receiving groove is subjected to frosting treatment to increase the friction with the wire sheath.

4. The wire detector for power facilities according to claim 1, wherein An arc-shaped limiting housing (5a) is arranged between adjacent clamping members (5), and the arc-shaped limiting housing (5a) is connected with the electric turntable (4).

5. The wire detector for power facilities according to claim 1, characterized in that, The clamping member (5) clamps the wire sheath through an elastic telescopic block (5b).

6. The wire detector for power facilities according to claim 5, characterized in that, The side of the elastic telescopic block (5b) in contact with the wire sheath is set as a plane.

7. The wire detector for power facilities according to claim 5, characterized in that, The clamping member (5) near the middle position of the wire sheath (100) on the electric turntable (4) is not provided with an elastic telescopic block (5b), but an inflatable airbag (5c) is provided; and a magnetic attraction block (5d) is fixedly connected to one side of the clamping member (5), and the magnetic attraction block (5d) is magnetically attracted to the electric turntable (4).

8. The wire detector for power facilities according to claim 7, characterized in that, It further comprises a connecting frame (201), a detector (202), a second linear guide rail (203), a second moving slider (204), a second pushing member (205) and a perforated plate (206); a connecting frame (201) is fixedly connected to one side of the mounting plate (1); a detector (202) is mounted on the connecting frame (201), and the detector (202) faces the wire sheath (100); a second linear guide rail (203) is mounted on the connecting frame (201), two second moving sliders (204) are slidably connected to the second linear guide rail (203), and the two second moving sliders (204) are located on both sides of the second linear guide rail (203); a plurality of second pushing members (205) are fixedly connected to the second moving slider (204); a perforated plate (206) is fixedly connected to the clamping member (5) where the inflatable airbag (5c) is installed; the telescopic part of the second pushing member (205) can be inserted into the hole of the perforated plate (206).

9. The wire detector for power facilities according to claim 7, characterized in that, An electromagnet is arranged inside the electric turntable (4), and the magnetic attraction block (5d) is attracted by the electromagnet.

10. A wire detector for power facilities according to claim 7, characterized in that, A semi-circular notch is arranged on the side of the inflatable airbag (5c) in contact with the wire sheath.

Images