CN212539927U

CN212539927U - Tension device for detecting insulator

Info

Publication number: CN212539927U
Application number: CN202021070935.4U
Authority: CN
Inventors: 万志伟; 万誉恒
Original assignee: Hunan Huajia Electric Porcelain Electric Co ltd
Current assignee: Hunan Huajia Electric Porcelain Electric Co ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2021-02-12
Anticipated expiration: 2030-06-11

Abstract

The utility model discloses a tension device for detecting insulators, which comprises insulators, insulator mounting seats, a box body and a box cover hinged at the top of the box body, wherein two fixed plates which are symmetrically arranged are fixed on one side wall of the box body, linear drivers are fixed on the two fixed plates in opposite directions, semicircular annular clamping plates are fixed at the ends of the two linear drivers, which are far away from the fixed plates, and the shapes of the two clamping plates are matched with the shape of one end of each insulator; a pull rod is slidably connected to the side wall, far away from the fixed plate, of the box body, a drag hook is arranged at one end, close to the insulator, of the pull rod, the drag hook is connected with the other end of the insulator in a matched mode, one end, far away from the fixed plate, of the pull rod is connected with a hydraulic cylinder, and a tension sensor is installed between the pull rod and the hydraulic; be provided with two protective frames in the box, two protective frames all are connected with drive arrangement, and it has the insulator and produces not hard up at the clamping piece in tension detection process, avoids the effect that the broken thing of insulator that is pulled to break flies out.

Description

Tension device for detecting insulator

Technical Field

The utility model relates to an insulator capability test technical field, concretely relates to detect pulling force device of insulator.

Background

The insulator is a device which is arranged between conductors with different electric potentials or between the conductor and a grounding component and can bear the action of voltage and mechanical stress, and along with the continuous improvement of the requirements of a power transmission and transformation system in China, the demand of the insulator on important high-voltage electrical appliances such as a switch, a transformer, a mutual inductor and the like which are important for power transmission and distribution is continuously increased.

In order to ensure that the insulator can keep rated tensile strength in various environments, the tensile strength of the insulator needs to be detected, and particularly, a tensile force test is carried out on an iron core inside the insulator.

The existing traditional detection method is that a spring scale is manually stepped, a hook part of the spring scale hooks the bottom end of an insulator, and the top end of the insulator is manually held to lift upwards for inspection, so that the detection method is high in manual labor intensity, inaccurate in reading, prone to misreading and greatly influenced in detection accuracy; the existing insulator tension detector is characterized in that clamping is achieved through the clamping clamp matched with the insulator, the hydraulic cylinder is recycled to carry out tension detection on the insulator, the insulator is stressed excessively when the insulator is tested for tension, the clamping clamp can possibly loosen and pop out, broken objects generated by breakage of the insulator are also in danger of popping out, and the box is easy to hurt and meanwhile hidden danger of injury to workers exists.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a tension device for detecting insulators, which comprises insulators, insulator mounting seats, a box body and a box cover hinged at the top of the box body, wherein two symmetrically arranged fixed plates are fixed on one side wall of the box body, linear drivers are fixed on the two fixed plates in opposite directions, semicircular annular clamping plates are fixed at one ends of the two linear drivers far away from the fixed plates, and the shapes of the two clamping plates are matched with the shape of one end of each insulator; a pull rod is slidably connected to the side wall, far away from the fixed plate, of the box body, a drag hook is arranged at one end, close to the insulator, of the pull rod, the drag hook is connected with the other end of the insulator in a matched mode, one end, far away from the fixed plate, of the pull rod is connected with a hydraulic cylinder, and a tension sensor is installed between the pull rod and the hydraulic; two protective frames are arranged in the box body and are connected with a driving device.

Furthermore, the driving device comprises a sliding rod which is connected with the protective frame in a sliding manner and extends out of the box body, and two screw rods which are respectively connected with the two protective frames in a threaded fit manner and extend out of the box body; one end of the sliding rod extending out of the box body is fixedly provided with a first limiting block abutted against the outer wall of the box body, and one ends of the two lead screws close to the insulator are fixedly provided with two second limiting blocks.

Furthermore, a hand wheel is arranged at one end of each screw rod extending out of the box body.

Furthermore, the bottom of the protective frame is provided with a roller, the protective frame is connected to the bottom wall of the box body in a rolling mode through the roller, and a rubber buffer layer is arranged on the side face, close to the insulator, of the protective frame.

Furthermore, the outer wall of the box body is connected with a cold air gun and a hot air gun, and a temperature sensor is installed in the box body.

Furthermore, the inner wall of the box body is paved with a heat preservation layer.

The utility model discloses beneficial effect as follows:

1. the shapes of the clamping plates are matched with the shape of the insulator, and the insulator is clamped by using the two linear drivers, so that the insulator is stably arranged between the two clamping plates, a better clamping effect is achieved, and the insulator is effectively prevented from being loosened in the tension detection process; the periphery of the tested insulator is protected by the protective frame, broken objects of the pulled broken insulator are effectively prevented from flying out, and the box body and workers are effectively protected.

2. Before the insulator to be tested is clamped, the protective frame is far away from the mounting position of the insulator to be tested by using the driving device, so that a worker can conveniently clamp and mount the insulator; an operator rotates the hand wheel to drive the screw rod to rotate, so that the protective frame can be driven to roll along the bottom wall of the box body, and the operation is convenient and labor-saving.

3. The hot air gun and the cold air gun are arranged to test the tensile strength of the insulator in different temperature environments so as to obtain more comprehensive tensile data of the insulator.

Drawings

FIG. 1 is a schematic structural view of the present invention;

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

fig. 3 is a schematic structural diagram of the driving device in fig. 1.

The reference numerals are explained below: 1. an insulator; 2. an insulator mounting seat; 3. a box body; 31. a box cover; 4. a fixing plate; 5. a linear actuator; 6. a splint; 7. a pull rod; 71. pulling a hook; 8. a hydraulic cylinder; 9. a tension sensor; 10. a protective frame; 101. a rubber buffer layer; 11. a slide bar; 12. a screw rod; 13. a first limiting block; 14. a second limiting block; 15. a hand wheel; 16. a roller; 17. a hot air gun; 18. a cold air gun; 19. a temperature sensor; 20. and (7) an insulating layer.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The invention will be further explained with reference to the drawings in the following description: a tension device for detecting insulators comprises an insulator 1, an insulator mounting seat 2, a box body 3 and a box cover 31 hinged to the top of the box body 3, wherein two symmetrically-arranged fixing plates 4 are fixed on one side wall of the box body 3, linear drivers 5 are fixed on the two fixing plates 4 in opposite directions, semicircular annular clamping plates 6 are fixed at one ends, far away from the fixing plates 4, of the two linear drivers 5, and the shapes of the two clamping plates 6 are matched with that of one end of the insulator 1; a pull rod 7 is slidably connected to the side wall, far away from the fixed plate 4, of the box body 3, a drag hook 71 is arranged at one end, close to the insulator 1, of the pull rod 7, the drag hook 71 is connected with the other end of the insulator 1 in a matched mode, one end, far away from the fixed plate 4, of the pull rod 7 is connected with a hydraulic cylinder 8, and a tension sensor 9 is installed between the pull rod 7 and the hydraulic cylinder 8; two protective frames 10 are arranged in the box body 3, rollers 16 are arranged at the bottoms of the protective frames 10, the protective frames 10 are connected to the bottom wall of the box body 3 in a rolling mode through the rollers 16, a rubber buffer layer 101 is arranged on the side face, close to the insulator 1, of each protective frame 10, and the two protective frames 10 are both connected with a driving device; the driving device comprises a sliding rod 11 which is connected with the protective frame 10 in a sliding manner and extends out of the box body 3, and two screw rods 12 which are respectively connected with the two protective frames 10 in a threaded fit manner and extend out of the box body 3; a first limiting block 13 which is abutted against the outer wall of the box body 3 is fixed at one end, extending out of the box body 3, of the slide rod 11, two second limiting blocks 14 are fixed at one ends, close to the insulator 1, of the two lead screws 12, and a hand wheel 15 is arranged at one end, extending out of the box body 3, of the two lead screws 12; the outer wall of the box body 3 is connected with a cold air gun 18 and a hot air gun 17, a temperature sensor 19 is installed in the box body 3, and a heat preservation layer 20 is laid on the inner wall of the box body 3.

The utility model discloses the theory of operation as follows:

as shown in fig. 1 and 2, before an operator clamps and installs an insulator 1, the operator moves a protective frame 10 to obtain an installation space, rotates hand wheels 15 at two ends to drive two lead screws 12 to rotate, the lead screws 12 are rotatably connected with a box body 3 and are in threaded fit connection with the protective frame 10, along with the rotation of the lead screws 12, the protective frame 10 moves towards the side wall direction of the box body 3 along a slide rod 11, and a roller 16 abutted against the bottom wall of the box body 3 is installed at the bottom of the protective frame 10 to reduce friction; when the insulator 1 is clamped and installed, the insulator 1 to be tested is placed on the insulator installation seat 2, the linear driver 5 is started to drive the clamping plates 6 to clamp one ends of the insulator 1, which are matched with the clamping plates 6 in shape, so that the insulator 1 is stably installed between the two clamping plates 6 to prevent the insulator 1 from loosening in the tension detection process, and the other end of the insulator 1 is connected with the drag hook 71 of the pull rod 7; after the insulator 1 is clamped, the hand wheel 15 is reversed to enable the two protective frames 10 to move towards the direction of the insulator 1 to be tested, and the protective frames 10 move to the position of the second limiting block 14 at the tail end of the screw rod 12 and stop; if the insulator 1 is broken by tension, the protective frame 10 can effectively prevent broken objects of the insulator 1 which is broken by tension from flying out, so that the box body 3 and workers are effectively protected, and the side surface, close to the insulator 1, of the protective frame 10 is provided with the rubber buffer layer 101 to buffer and unload the flying broken objects.

With box 3 case lid 31 closed, change the ambient temperature in the box 3 through opening hot-blast rifle 17 or cold-blast rifle 18, through temperature sensor 19 monitoring box 3 internal temperature, reach required temperature after, open and connect pneumatic cylinder 8 and exert pulling force to pull rod 7, and then carry out the pulling force to insulator 1 and detect, the tensile data is monitored through force sensor 9.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a detect tension device of insulator, includes insulator, insulator mount pad, box and articulate in the case lid at box top, its characterized in that: two symmetrically-arranged fixing plates are fixed on one side wall of the box body, linear drivers are fixed on the two fixing plates in opposite directions, semicircular annular clamping plates are fixed at the ends, far away from the fixing plates, of the two linear drivers, and the shapes of the two clamping plates are matched with the shape of one end of the insulator; a pull rod is connected to the side wall, far away from the fixed plate, of the box body in a sliding mode, a drag hook is arranged at one end, close to the insulator, of the pull rod, the drag hook is connected with the other end of the insulator in a matched mode, one end, far away from the fixed plate, of the pull rod is connected with a hydraulic cylinder, and a tension sensor is installed between the pull rod and the hydraulic cylinder; two protective frames are arranged in the box body, and the two protective frames are connected with a driving device.

2. The tension device for detecting the insulator as claimed in claim 1, wherein: the driving device comprises a sliding rod which is connected with the protective frames in a sliding mode and extends out of the box body, and two screw rods which are respectively in threaded fit connection with the two protective frames and extend out of the box body; one end of the sliding rod, which extends out of the box body, is fixedly provided with a first limiting block which is abutted against the outer wall of the box body, and one end of the two lead screws, which is close to the insulator, is fixedly provided with two second limiting blocks.

3. The tension device for detecting the insulator as claimed in claim 2, wherein: and a hand wheel is arranged at one end of the two screw rods extending out of the box body.

4. The device for detecting the tension of the insulator as claimed in claim 2 or 3, wherein: the bottom of the protective frame is provided with a roller, the protective frame is connected to the bottom wall of the box body in a rolling mode through the roller, and a rubber buffer layer is arranged on the side face, close to the insulator, of the protective frame.

5. The tension device for detecting the insulator as claimed in claim 1, wherein: the outer wall of the box body is connected with a cold air gun and a hot air gun, and a temperature sensor is installed in the box body.

6. The device for detecting the tension of the insulator as claimed in claim 5, wherein: and the inner wall of the box body is paved with a heat preservation layer.