Anti-fracture structure of underground cable

Abstract

The utility model relates to the technical field of anti-cracking structures, in particular to an anti-cracking structure of an underground cable, which comprises a cable, a rubber sleeve is in transition fit with the outer side of the cable, an inner shell is fixedly connected with the outer side of the rubber sleeve, and an outer shell concentric with the inner shell is mounted on the outer side of the inner shell. A pressure detection device fixed through screws is arranged between the inner shell and the outer shell, a bottom plate is fixedly connected to the outer side surface of the inner shell, a compression-resistant spring is fixedly connected between the inner shell and the outer shell, a check block groove is formed in the end, close to each other, of the inner shell and the outer shell, and a check block is installed in the check block groove. The end face, close to the outer side, of the check block is fixedly connected with a gasket, and the end, close to the outer side, of the check block is fixedly connected with a sealing sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-rupture structures, in particular to an anti-rupture structure for underground cables. Background Art

[0002] Due to the current shortage of urban land resources, heavy traffic pressure and urban construction problems, common overhead high-voltage lines have become inconvenient to use. Underground cables have gradually been used by people due to their unique advantages and have become a common underground power transmission method in cities. Due to the complex underground environment, the cables may be damaged. The underground cable anti-rupture structure is a device that protects the cables when they are working underground to prevent the cables from rupturing.

[0003] Although the common underground cable anti-rupture structure can protect the cable to a certain extent, due to the complex underground environment, the cable is still at risk of rupture, and when the cable ruptures, the common anti-rupture structure may not provide effective early warning, resulting in the cable rupture cannot be discovered in time; and when protecting cables over a long distance, the device in the middle position may be subjected to greater external force. Since the middle part of the commonly used anti-rupture structure is an integral whole, the outer shell of the anti-rupture structure may be damaged due to uneven force. Therefore, an anti-rupture structure for underground cables is proposed to address the above problems. Utility Model Content

[0004] The utility model aims to provide an anti-rupture structure for underground cables to solve the problems of failure to provide effective early warning and damage caused by uneven force due to excessive length of the anti-rupture structure.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A rupture-proof structure for underground cables, comprising a cable, wherein the outer side of the cable is transitionally fitted with a rubber sleeve, the outer side of the rubber sleeve is fixedly connected to an inner shell, the outer side of the inner shell is installed with an outer shell arranged concentrically therewith, a pressure detection device fixed by screws is arranged between the inner shell and the outer shell, the pressure detection device comprises a bottom plate, a spring box, a spring, a spring stopper, a connecting rod, a top plate, a transmitter shell, a button, a transmitter and an antenna, the upper surface of the bottom plate is fixedly connected to a spring box with a hollow interior, the center position of the upper surface of the bottom plate is fixedly connected to a spring arranged vertically, the upper side of the spring is fixedly connected to a spring stopper, and the upper side of the spring stopper is fixedly connected to a A connecting rod extending through the hole on the upper side of the spring box, wherein the upper side of the connecting rod is fixedly connected to a top plate, the upper side of the bottom plate is fixedly connected to a transmitter shell that fits the spring box and contains a power supply, a button is slidably connected to the center position of the upper side of the transmitter shell, a transmitter is fixedly connected to the right side of the transmitter shell, an antenna is fixedly connected to the upper side of the transmitter, the outer surface of the inner shell is fixedly connected to the bottom plate, a compression spring is fixedly connected between the inner shell and the outer shell, a block groove is provided at one end of the inner shell and the outer shell that are close to each other, a block is installed in the block groove, a gasket is fixedly connected to the end face of the block close to the outside, and a sealing sleeve is fixedly connected to the end of the block close to the outside.

[0007] Preferably, the diameters of the stopper and the washer are larger than the diameter of the stopper slot, and the washer is tightly fitted on the inner wall of the stopper slot close to the outer side.

[0008] Preferably, there are two inner shells and two outer shells, and the inner shell, the outer shell and the rubber sleeve can be disassembled into two halves. A protrusion is fixedly connected to the upper right end of the outer shell, and a rotating shaft is rotatably connected to the lower left end of the outer shell.

[0009] Preferably, there are four pressure detection devices and four compression springs, each of which is 90 degrees away from the other.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. In the utility model, the inner shell and the outer shell can be effectively separated by the pressure detection device and the pressure-resistant spring, and the external pressure can be effectively buffered. When the external pressure reaches the critical value, the top plate will contact the button. When the button is pressed, the button will transmit the pressure signal to the transmitter and then transmit it to the outside world through the antenna. After the outside people receive the warning signal at the place through the receiver matched with the transmitter, they can check and repair the place in time to prevent the harm from further expanding, thus solving the problem that the common anti-rupture structure cannot provide timely and effective warning.

[0012] 2. In the utility model, by setting up structures such as sealing sleeves, the inner shell and the outer shell can be connected in sections. When the part near the middle of the structure is subjected to a large external force, the inner shell and the outer shell can move a small amount, avoiding the fracture and deformation of the middle part of the anti-rupture structure, and solving the damage problem of the traditional one-piece structure caused by uneven force. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 A schematic diagram of the structure at A;

[0015] Figure 3 For this utility model Figure 1 Schematic diagram of the structure at B;

[0016] Figure 4 It is a left view of the utility model.

[0017] In the figure: 1. cable; 2. rubber sleeve; 3. inner shell; 4. outer shell; 5. pressure detection device; 501. bottom plate; 502. spring box; 503. spring; 504. spring stopper; 505. connecting rod; 506. top plate; 507. transmitter housing; 508. button; 509. transmitter; 510. antenna; 6. compression spring; 7. stopper; 8. gasket; 9. sealing sleeve; 10. screw; 11. rotating shaft; 12. bump; 13. stopper groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the present utility model, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0020] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0021] See also Figure 1-4 , the utility model provides a technical solution:

[0022] A rupture-proof structure for underground cables, comprising a cable 1, a rubber sleeve 2 being transitionally matched on the outer side of the cable 1, an inner shell 3 being fixedly connected to the outer side of the rubber sleeve 2, an outer shell 4 being arranged concentrically with the inner shell 3 being installed on the outer side of the inner shell 3, a pressure detection device 5 fixed by screws 10 being arranged between the inner shell 3 and the outer shell 4, the pressure detection device 5 comprising a bottom plate 501, a spring box 502, a spring 503, a spring stopper 504, a connecting rod 505, a top plate 506, a transmitter housing 507, a button 508, a transmitter 509 and an antenna 510, a spring box 502 having a hollow interior being fixedly connected to the upper surface of the bottom plate 501, a spring 503 arranged vertically being fixedly connected to the center of the upper surface of the bottom plate 501, a spring stopper 504 being fixedly connected to the upper side of the spring 503, and a spring stopper 504 being fixedly connected to the upper side of the spring 503. A connecting rod 505 extending from the upper hole of the spring box 502 is fixedly connected, a top plate 506 is fixedly connected to the upper side of the connecting rod 505, a transmitter shell 507 which fits the spring box 502 and contains a power supply is fixedly connected to the upper side of the bottom plate 501, a button 508 is slidably connected to the center position of the upper side of the transmitter shell 507, a transmitter 509 is fixedly connected to the right side of the transmitter shell 507, an antenna 510 is fixedly connected to the upper side of the transmitter 509, the outer surface of the inner shell 3 is fixedly connected to the bottom plate 501, a compression spring 6 is fixedly connected between the inner shell 3 and the outer shell 4, a block groove 13 is opened at the end where the inner shell 3 and the outer shell 4 are close to each other, a block 7 is installed in the block groove 13, a gasket 8 is fixedly connected to the end face of the block 7 close to the outside, and a sealing sleeve 9 is fixedly connected to the end of the block 7 close to the outside.

[0023] The diameters of the block 7 and the gasket 8 are larger than the diameter of the block groove 13 hole, and the gasket 8 is tightly fitted on the inner wall of the block groove 13 near the outer side. The block groove 13, the gasket 8 and the block 7 are set so that the block 7 and the gasket 8 will not fall off, and the inside of the structure can be sealed; the inner shell 3 and the outer shell 4 each have two, and the inner shell 3, the outer shell 4 and the rubber sleeve 2 can be disassembled into two halves. The upper right end of the outer shell 4 is fixedly connected with a protrusion 12, and the lower left end of the outer shell 4 is rotatably connected with a rotating shaft 11. The anti-rupture structure can be opened and the cable 1 can be placed in it by setting the protrusion 12 and the rotating shaft 11; there are four pressure detection devices 5 and four anti-compression springs 6 respectively, and the distance between each two is 90 degrees. By setting the number of pressure detection devices 5 and anti-compression springs, the cable 1 can be fully buffered and fixed to prevent unnecessary relative displacement between the inner shell 3 and the outer shell 4.

[0024] Working process: when it is necessary to protect the cable 1, pull the protrusion 12 to rotate the detachable outer shell 4, inner shell 3 and rubber sleeve 2 relative to the rotating shaft 11, so that the two halves of the outer shell 4, inner shell 3 and rubber sleeve 2 are opened, and after the cable 1 is placed in the rubber sleeve 2, cover the outer shell 4, inner shell 3 and rubber sleeve 2, and when the two sections of the inner shell 3 are connected to the outer shell 4, fix the block 7 and the gasket 8 in the block groove 13, so that the sealing sleeve 9 is fixed on the inner shell 3 and the outer shell 4, and the other end of the sealing sleeve 9 is also operated in the same way to complete the connection, and the outer shells 4 at both ends are slightly pulled toward both ends so that the gasket 8 fits tightly in the block groove 13, and then the anti-rupture device is buried together with the cable 1 underground. When a large pressure acts on the anti-rupture device, the outer shell 4 is deformed inwardly, so that the inner shell 3 and the outer shell 4 are close to each other, and the outer shell 4 drives the top plate 506, the connecting rod 505 and the elastic The spring stopper 504 compresses the spring 503 and the compression spring 6, and the elastic force of the spring 503 and the compression spring 6 buffers the external pressure. When the relative opposing pressure reaches a certain value, the deformation of the spring 503 is too large, and the top plate 506 will contact and press down the button 508, which is powered by the power supply inside the transmitter shell 507. The button 508 will start the transmitter 509 to transmit the signal to the outside through the antenna 510. After people receive the early warning signal through the receiver matched with the transmitter 509, they can find the area with excessive pressure, which is convenient for maintenance of the area. When the center of the anti-rupture structure is subjected to pressure, the sealing sleeve 9 can be deformed so that the inner shell 3 and the outer shell 4 on one side are deformed separately. The inner shell 3 and the outer shell 4 will not be excessively deformed in the middle part when subjected to excessive pressure due to the overly long integral structure, resulting in damage to the anti-rupture structure.

[0025] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-rupture structure for an underground cable, comprising a cable (1), characterized in that: The outer side of the cable (1) is transitionally fitted with a rubber sleeve (2), the outer side of the rubber sleeve (2) is fixedly connected to an inner shell (3), the outer side of the inner shell (3) is mounted with an outer shell (4) arranged concentrically therewith, and a pressure detection device (5) fixed by screws (10) is provided between the inner shell (3) and the outer shell (4), the pressure detection device (5) comprising a bottom plate (501), a spring box (502), a spring (503), a spring stopper (504), a connecting rod (505), A top plate (506), a transmitter housing (507), a button (508), a transmitter (509) and an antenna (510); a spring box (502) with a hollow interior is fixedly connected to the upper surface of the bottom plate (501); a spring (503) arranged vertically is fixedly connected to the center of the upper surface of the bottom plate (501); a spring stopper (504) is fixedly connected to the upper side of the spring (503); and a spring stopper (504) is fixedly connected to the upper side of the spring box (5 02) a connecting rod (505) extending through the upper hole, the connecting rod (505) is fixedly connected to a top plate (506) on the upper side, the bottom plate (501) is fixedly connected to a transmitter housing (507) which fits the spring box (502) and contains a power source, the transmitter housing (507) is slidably connected to a button (508) at the center of the upper side, the transmitter housing (507) is fixedly connected to a transmitter (509) on the right side, and the transmitter (509) is fixedly connected to the upper side. An antenna (510) is connected, the outer surface of the inner shell (3) is fixedly connected to a bottom plate (501), a compression spring (6) is fixedly connected between the inner shell (3) and the outer shell (4), a block groove (13) is provided at one end of the inner shell (3) and the outer shell (4) close to each other, a block (7) is installed in the block groove (13), a gasket (8) is fixedly connected to the end surface of the block (7) close to the outside, and a sealing sleeve (9) is fixedly connected to the end of the block (7) close to the outside.

2. The anti-rupture structure of an underground cable according to claim 1, characterized in that: The diameters of the stopper (7) and the washer (8) are greater than the diameter of the hole of the stopper groove (13), and the washer (8) is tightly fitted on the inner wall of the stopper groove (13) close to the outer side.

3. The anti-rupture structure of an underground cable according to claim 1, characterized in that: There are two inner shells (3) and two outer shells (4), and the inner shells (3), the outer shells (4) and the rubber sleeve (2) can be disassembled into two halves. A protrusion (12) is fixedly connected to the upper right end of the outer shell (4), and a rotating shaft (11) is rotatably connected to the lower left end of the outer shell (4).

4. The anti-rupture structure of an underground cable according to claim 1, characterized in that: There are four pressure detection devices (5) and four compression springs (6), each of which is 90 degrees away from the other.

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