CN109888703B

CN109888703B - Cable strain insulator device with alarm function

Info

Publication number: CN109888703B
Application number: CN201811604320.2A
Authority: CN
Inventors: 吴秀松; 孙玲; 徐敏; 丰峰; 潜山花; 董晓亮; 施华晖
Original assignee: Jinhua Bada Group Co Ltd Technology Information Branch; Jinhua Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Current assignee: Jinhua Bada Group Co Ltd Technology Information Branch; Jinhua Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2020-06-05
Anticipated expiration: 2038-12-26
Also published as: CN109888703A

Abstract

The invention discloses a cable strain device with an alarm function, and relates to the field of power transmission; the tension device comprises a main body and an ejector rod, a slot matched with the ejector rod is formed in the free end of the main body, an insulating layer is arranged on the inner side wall of the slot, an adjusting nut is connected to the ejector rod in a threaded manner, an alarm device is arranged on the tension device, the tension device comprises a shell, one end of the shell is hinged to the telegraph pole and is provided with a cable outlet, the other end of the shell is provided with a first cable through hole, a cable clamping block, a spring, an adjusting slide block, a pull wire and a roller wheel are sequentially arranged in the shell along the axis of the shell, a second cable through hole is formed in the adjusting slide block, the cable clamping block and the adjusting slide block are both connected with the shell in a sliding manner, and the roller; the invention has the alarm function.

Description

Cable strain insulator device with alarm function

Technical Field

The invention belongs to the field of power transmission, and particularly relates to a cable strain device with an alarm function.

Background

The cable is fixed on the telegraph pole, and after a period of time, the cable is easy to loosen, so that people can feel unsafe visually; however, in some unmanned areas, people cannot find cables needing to be maintained in time, so that some cables are seriously sagged and finally break under the gravity of the cables, and inconvenience is brought to life of people.

Chinese patent No. CN106448952B, grant publication No. 20170811, discloses a "Y-shaped strain insulator string and strain tower"; the method comprises the following steps: the tension string comprises two tension strings, a first connecting hardware fitting, a first extension structure, a second connecting hardware fitting and a first triangular yoke plate, wherein the first triangular yoke plate is triangular; the apex angle of first triangle yoke plate loops through first link fitting, first extension structure and second link fitting and is connected with the strain insulator tower, and two base angles of first triangle yoke plate are connected with two strain insulator-strings respectively. The strain tower comprises a hanging point of a Y-shaped strain insulator string, and the Y-shaped strain insulator string is hung at the hanging point; although the unbalanced force of the tension tower is reduced, the scheme of the prior art is not changed, the ductility of the tension tower is utilized to provide enough tension for the cable, so that the cable is prevented from sagging, the cable is inevitably sagged after being used for a long time, the maximum maintenance time is easily delayed in an area with few eyes, and the alarm function is lacked.

Disclosure of Invention

The invention aims to overcome the defect that the prior art is lack of an alarm function, an alarm device is additionally arranged, when the tension of a cable is reduced, an adjusting nut abuts against a main body, a circuit of the alarm device is closed, and the alarm device gives an alarm, so that the cable tension resisting device with the alarm function is provided.

In order to achieve the purpose, the invention adopts the following technical scheme:

a cable tension device with an alarm function comprises a tension device, wherein one end of the tension device is hinged on a telegraph pole, the other end of the tension device is connected with a cable, a telescopic device is arranged below the tension device and comprises a main body and an ejector rod, one end of the ejector rod is hinged on the tension device, one end of the main body is hinged on the telegraph pole, a slot matched with the ejector rod is arranged on the free end of the main body, the free end of the ejector rod is inserted in the slot and is in sliding connection with the slot, an insulating layer is arranged on the inner side wall of the slot, an adjusting nut is in threaded connection with the ejector rod and is positioned between the tension device and the main body, an alarm device is arranged on the tension device, one end of the alarm device is electrically connected with the ejector rod, the other end of the alarm device is electrically connected with the, the utility model discloses a cable clamp, including casing, casing other end, cable clamping block, spring and adjusting block, stay wire and gyro wheel, be equipped with first cable via hole in proper order along its axle in the casing, be equipped with second cable via hole on the adjusting block, cable clamping block and cable junction, the cable clamping block is located between first cable via hole and the spring, the cable clamping block all with casing sliding connection with adjusting block, the gyro wheel rotates with the casing to be connected, the gyro wheel is connected with a motor, spring one end is connected with the cable clamping block, the spring other end is connected with adjusting block, the one end winding of acting as go-between is on the gyro wheel, the other end of acting as go-between is connected with adjusting block.

When the invention is used, one end of the strain device is hinged on the telegraph pole, the other end of the strain device is connected with the cable, the strain device provides tension for the cable, so that the cable does not droop, the performance of the strain device is degraded along with the passage of time, the cable begins to droop, one end of the strain device connected with the cable descends, one end of the ejector rod is hinged on the strain device, one end of the main body is hinged on the telegraph pole, one end of the ejector rod moves towards the main body along with the rotation of the strain device, finally, the adjusting nut on the ejector rod is abutted on the main body, one end of the alarm device is connected on the ejector rod, the other end of the alarm device is connected on the main body, the ejector rod, the main body and the adjusting nut are all made of conductive materials, the inner side wall of the slot, the alarm device does not work, when the adjusting nut is abutted against the main body, the ejector rod is communicated with the main body through the adjusting nut, at the moment, an external circuit of the alarm device is closed, so that the alarm device works and sends an alarm signal to an electric power department, and the electric power department can maintain immediately after receiving the information; the invention has the alarm function; on the other hand, after the adjusting nut abuts against the main body, the adjusting nut prevents the ejector rod from further moving towards the main body, namely, the telescopic device is prevented from being further shortened, so that one end of the tension device, which is connected with the cable, is prevented from further descending, the cable is prevented from further sagging, and time is won for maintenance of a power department; according to the invention, a cable penetrates into a shell from a first cable through hole, then sequentially penetrates through a cable clamping block, a second cable through hole and a cable outlet and penetrates out of the shell, the cable is fixedly connected onto the cable clamping block, tension is provided for the cable through the elasticity of a spring, the elasticity of the spring is balanced by the tension of a stay wire, after the cable is used for a long time, the spring with poor spring performance is stretched by the cable, at the moment, only a motor is started, the motor drives a roller to rotate, the roller winds the stay wire, the stay wire enables an adjusting sliding block to move in the direction far away from the cable clamping block, the spring is pulled by the adjusting sliding block, the tension of the cable is increased, and the cable is straightened again; the adjusting nut can self-define the rotation angle of the tension device when alarming according to the requirement, and the usability of the tension device is improved.

Preferably, the cable clamping block and the adjusting slide block are both provided with a distance sensor used for sensing the distance between the cable clamping block and the adjusting slide block, the shell is provided with a solar cell and a signal emitter, and the distance sensor and the signal emitter are both electrically connected with the solar cell.

Add distance sensor, solar cell provides the electric energy for distance sensor, all be equipped with distance sensor on cable grip block and the adjusting block, distance sensor can monitor the distance between cable grip block and the adjusting block constantly, namely, the length of spring, signal transmitter in time sends the monitoring result to the electric power department, when spring length exceedes the certain limit, the spring is probably broken by the stretch-break, when the spring is broken by the stretch-break, the cable falls apart at the hectare moment, cause the accident, therefore the electric power department when learning that spring length exceedes a definite value, the maintenance of coming at once, take precautions against in the bud.

Preferably, the shell comprises a first sub-shell and a second sub-shell coaxial with the first sub-shell, one end of the first sub-shell is fixedly connected with one end of the second sub-shell, one end, far away from the first sub-shell, of the second sub-shell is hinged to the telegraph pole, the first cable through hole is located at one end, far away from the second sub-shell, of the first sub-shell, the cable clamping block is located in the first sub-shell, the adjusting slide block is located in the second sub-shell, a first flanging is arranged at one end, close to the second sub-shell, of the first sub-shell, a second flanging is arranged at one end, close to the first sub-shell, of the second sub-shell, and the first flanging and the second flanging are fixedly.

When the cable clamp is installed, the second sub-shell is installed on a telegraph pole, the adjusting slide block is connected with the idler wheel through the pull wire, the cable passes through the first cable through hole and then is connected to the cable clamping block, the cable clamping block and the adjusting slide block are finally connected through the spring, and the first sub-shell and the second sub-shell are finally fixedly connected through the fixing bolt; the invention has the characteristic of simple installation.

Preferably, the inner side wall of the shell is provided with a drainage groove for dredging rainwater along the axial direction, one end of the shell close to the first cable through hole is provided with a water outlet for guiding rainwater, and the water outlet is communicated with one end of the drainage groove.

When the rainwater drainage device is used, rainwater easily enters the shell, accumulated water is easily formed in the shell when rainwater is not drained in time, the cable is easily aged after being soaked in the accumulated water for a long time, and parts are easily corroded.

The invention has the beneficial effects that: (1) the ejector rod is communicated with the main body through the adjusting nut, and at the moment, an external circuit of the alarm device is closed, so that the alarm device works and sends an alarm signal to an electric power department, and the electric power department can maintain the alarm device immediately after receiving the information; the invention has the alarm function; (2) the motor drives the roller to rotate, the roller is wound with the pull wire, the pull wire enables the adjusting sliding block to move in the direction far away from the cable clamping block, the adjusting sliding block pulls the spring, the spring pulls the cable, the tension of the cable is increased, and the cable is straightened again; (3) the signal emitter sends the monitoring result to the electric power department in time, when the length of the spring exceeds a certain range, the spring is likely to be broken, when the spring is broken, the cable is broken at intervals, so as to cause accidents, therefore, when the electric power department knows that the length of the spring exceeds a certain value, the electric power department can immediately maintain the spring to prevent accidents; (4) the drainage channel is additionally arranged, rainwater is guided to the water outlet by the drainage channel and then is discharged from the water outlet, so that accumulated water in the shell is prevented, and the service life of the invention is prolonged; (5) the adjusting nut can self-define the rotation angle of the tension device when alarming according to the requirement, and the usability of the tension device is improved.

Drawings

FIG. 1 is a schematic diagram of a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of state two of the present invention;

fig. 3 is a partial enlarged view at a in fig. 1.

In the figure: the device comprises a cable 1, a main body 2, a push rod 3, a slot 4, an adjusting nut 5, an alarm device 6, a distance sensor 7, an insulating layer 8, a solar cell 9, a first sub-shell 13, a second sub-shell 14, a first flanging 15, a second flanging 16, a fixing bolt 17, a water drainage groove 18, a shell 19, a cable clamping block 20, a spring 21, an adjusting slide block 22, a stay wire 23, a roller 24, a first cable through hole 25, a cable outlet 26, a water outlet 27 and a second cable through hole 28.

Detailed Description

The invention is explained in further detail below with reference to the figures and the detailed description:

FIG. 1, FIG. 2 and FIG. 3 show a cable tension device with alarm function, comprising a tension device, wherein one end of the tension device is hinged on a wire pole, the other end of the tension device is connected with a cable 1, a telescopic device is arranged below the tension device, the telescopic device comprises a main body 2 and a mandril 3, one end of the mandril 3 is hinged on the tension device, one end of the main body 2 is hinged on the wire pole, a slot 4 matched with the mandril 3 is arranged at the free end of the main body 2, the free end of the mandril 3 is inserted in the slot 4 and is in sliding connection with the slot 4, an insulating layer 8 is arranged on the inner side wall of the slot 4, an adjusting nut 5 is in threaded connection with the mandril 3, the adjusting nut 5 is arranged between the tension device and the main body 2, an alarm device 6 is arranged on the tension device, one end of the alarm device, the tension resistant device comprises a shell 19, one end of the shell 19 is hinged on a telegraph pole and is provided with a cable outlet 26, the other end of the shell 19 is provided with a first cable through hole 25, a cable clamping block 20, a spring 21, an adjusting slide block 22, a pull wire 23 and a roller 24 are sequentially arranged in the shell 19 along the shaft, the adjusting slide block 22 is provided with a second cable through hole 28, the cable clamping block 20 is connected with the cable 1, the cable clamping block 20 is positioned between the first cable through hole 25 and the spring 21, the cable clamping block 20 and the adjusting slide block 22 are both connected with the shell 19 in a sliding way, the roller 24 is rotatably connected with the shell 19, the roller 24 is connected with a motor, one end of the spring 21 is connected with the cable clamping block 20, the other end of the spring 21 is connected with the adjusting slide block 22, one end of the pull wire 23 is wound on the roller 24, and the other end of the pull wire 23 is connected with the adjusting slide block 22.

Fig. 1 shows that the cable clamping block 20 and the adjusting slide block 22 are both provided with a distance sensor 7 for sensing the distance between the cable clamping block 20 and the adjusting slide block 22, the housing 19 is provided with a solar cell 9 and a signal emitter, and the distance sensor 7 and the signal emitter are both electrically connected with the solar cell 9.

Fig. 1 shows that the housing 19 includes a first sub-housing 13 and a second sub-housing 14 coaxial with the first sub-housing 13, one end of the first sub-housing 13 is fixedly connected to one end of the second sub-housing 14, one end of the second sub-housing 14 away from the first sub-housing 13 is hinged to a utility pole, the first cable via 25 is located at one end of the first sub-housing 13 away from the second sub-housing 14, the cable clamping block 20 is located in the first sub-housing 13, the adjusting slider 22 is located in the second sub-housing 14, a first flange 15 is arranged at one end of the first sub-housing 13 close to the second sub-housing 14, a second flange 16 is arranged at one end of the second sub-housing 14 close to the first sub-housing 13, and the first flange 15 is fixedly connected to the second flange 16 through a fixing bolt 17.

Fig. 3 shows that the inner side wall of the housing 19 is provided with a drainage groove 18 for guiding rainwater along the axial direction, one end of the housing 19 close to the first cable via hole 25 is provided with a water outlet 27 for guiding rainwater, and the water outlet 27 is communicated with one end of the drainage groove 18.

Claims

1. A cable strain insulator device with an alarm function comprises a strain insulator device, one end of the strain insulator device is hinged to a telegraph pole, the other end of the strain insulator device is connected with a cable (1), and the cable strain insulator device is characterized in that a telescopic device is arranged below the strain insulator device and comprises a main body (2) and a mandril (3), one end of the mandril (3) is hinged to the strain insulator device, one end of the main body (2) is hinged to the telegraph pole, a slot (4) matched with the mandril (3) is formed in the free end of the main body (2), the free end of the mandril (3) is inserted into the slot (4) and is in sliding connection with the slot (4), an insulating layer (8) is arranged on the inner side wall of the slot (4), an adjusting nut (5) is connected to the mandril (3) through threads, the adjusting nut (5) is positioned between the strain, one end of the alarm device (6) is electrically connected with the ejector rod (3), the other end of the alarm device (6) is electrically connected with the main body (2), the tension device comprises a shell (19), one end of the shell (19) is hinged to the telegraph pole and provided with a cable outlet (26), the other end of the shell (19) is provided with a first cable through hole (25), a cable clamping block (20), a spring (21), an adjusting slide block (22), a stay wire (23) and a roller (24) are sequentially arranged in the shell (19) along the axis of the shell, a second cable through hole (28) is arranged on the adjusting slide block (22), the cable clamping block (20) is connected with the cable (1), the cable clamping block (20) is positioned between the first cable through hole (25) and the spring (21), and the cable clamping block (20) and the adjusting slide block (22) are both connected with the shell (19) in a sliding manner, the cable clamp is characterized in that the roller (24) is rotatably connected with the shell (19), the roller (24) is connected with a motor, one end of the spring (21) is connected with the cable clamping block (20), the other end of the spring (21) is connected with the adjusting slide block (22), one end of the pull wire (23) is wound on the roller (24), and the other end of the pull wire (23) is connected with the adjusting slide block (22).

2. The cable strain insulator device with the alarm function according to claim 1, wherein the cable clamping block (20) and the adjusting slider (22) are respectively provided with a distance sensor (7) for sensing the distance between the cable clamping block (20) and the adjusting slider (22), the housing (19) is provided with a solar cell (9) and a signal emitter, and the distance sensor (7) and the signal emitter are both electrically connected with the solar cell (9).

3. The cable strain insulator device with the alarm function according to claim 1 or 2, wherein the housing (19) comprises a first sub-housing (13) and a second sub-housing (14) coaxial with the first sub-housing (13), one end of the first sub-housing (13) is fixedly connected with one end of the second sub-housing (14), one end of the second sub-housing (14) far away from the first sub-housing (13) is hinged on a telegraph pole, the first cable through hole (25) is located at one end of the first sub-housing (13) far away from the second sub-housing (14), the cable clamping block (20) is located in the first sub-housing (13), the adjusting slide block (22) is located in the second sub-housing (14), one end of the first sub-housing (13) close to the second sub-housing (14) is provided with a first flange (15), one end of the second sub-housing (14) close to the first sub-housing (13) is provided with a second flange (16), the first flanging (15) and the second flanging (16) are fixedly connected through a fixing bolt (17).

4. The cable strain insulator device with the alarm function according to claim 1 or 2, wherein a drainage groove (18) for guiding rainwater is axially formed in the inner side wall of the housing (19), a water outlet (27) for guiding rainwater is formed in one end, close to the first cable through hole (25), of the housing (19), and the water outlet (27) is communicated with one end of the drainage groove (18).