CN216411464U

CN216411464U - Anti-interference insulation resistance testing arrangement

Info

Publication number: CN216411464U
Application number: CN202122829378.0U
Authority: CN
Inventors: 武爱云; 武玉波
Original assignee: Jinan Zhuoxin Power Equipment Co ltd
Current assignee: Jinan Zhuoxin Power Equipment Co ltd
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2022-04-29
Anticipated expiration: 2031-11-18

Abstract

The utility model discloses an anti-interference insulation resistance testing device, which relates to the technical field of resistance testing and comprises a tester main body, wherein two cavities are formed in the tester main body, a fixed rod is installed in each cavity, a hollow rotary drum is arranged outside each fixed rod and is connected with the hollow rotary drum through an elastic unit, an electric wire is wound on the outer surface of the hollow rotary drum, and one end of the electric wire is electrically connected with a circuit board in the tester main body; through setting up the dead lever, the hollow rotary drum of clockwork spring cooperation is used, utilizes spring, fixed limiting plate and activity limiting plate cooperation to use, and the electric wire can be pulled out according to actual need to the fixed limiting plate of cooperation carries out spacing chucking with activity limiting plate, and then can pull out suitable length according to the test needs, does not need whole pulling out, and utilizes the clockwork spring to make the electric wire pack up fast after the test finishes, effectively avoids the electric wire to expose the problem that influences the operation.

Description

Anti-interference insulation resistance testing arrangement

Technical Field

The utility model relates to the technical field of resistance testing, in particular to an anti-interference insulation resistance testing device.

Background

The insulation resistance measuring instrument is mainly used for measuring the insulation resistance of equipment such as large transformers, mutual inductors, generators, high-voltage motors, power capacitors, power cables, lightning arresters and the like, and is used for measuring the insulation of other instruments in a resistance mode. Because most insulators in life are not perfectly insulated, the instrument can measure current and calculate resistance by applying high-voltage direct current to the insulators, and the insulation resistance tester has an anti-interference function in order to avoid electromagnetic interference.

The existing anti-interference insulation resistance tester still exposes the wire of the test fixture to the outside in the using process, is not beautiful, is easy to bring inconvenience to the operation of operators, is easy to touch the wire to cause the wire to be loose, and has incomplete functions.

SUMMERY OF THE UTILITY MODEL

The anti-interference insulation resistance testing device provided by the utility model solves the problems that the existing anti-interference insulation resistance tester still exposes the wire of the testing clamp to the outside for use in the using process, is not beautiful, is easy to bring inconvenience to the operation of operators, is easy to touch the wire to cause the loosening of the wire, and is incomplete in function.

In order to achieve the purpose, the utility model adopts the following technical scheme: an anti-interference insulation resistance testing device comprises a tester main body, two cavities are arranged inside the tester main body, a fixed rod is arranged in the cavity, a hollow rotary drum is arranged outside the fixed rod and is connected with the hollow rotary drum through an elastic unit, the outer surface of the hollow rotary drum is wound with an electric wire, one end of the electric wire is electrically connected with a circuit board in the tester main body, the upper surface of the tester main body is provided with a channel which is connected with the cavity, the end part of the wire passes through a guide ring arranged on the inner wall of the cavity and the channel to extend out of the tester main body and is electrically connected with a test fixture, the tester is characterized in that a groove is formed in the channel, a limiting unit for limiting and clamping the electric wire is arranged in the groove and the channel, and a protective shell is slidably arranged at the position, right facing the display screen, of the upper surface of the tester main body.

As a preferable scheme of the utility model, the elastic unit comprises a plurality of springs mounted on the outer surface of the fixed rod, and one end of each spring, which is far away from the fixed rod, is connected with the inner wall of the hollow drum.

As a preferable scheme of the utility model, the outer surfaces of both ends of the hollow rotary drum are respectively fixed with a limiting disc for limiting the electric wire.

According to a preferred scheme of the utility model, the limiting unit comprises a spring arranged in the groove, a movable limiting plate arranged at one end, far away from the groove, of the spring, and a fixed limiting plate arranged on the inner wall of the channel and opposite to the movable limiting plate, rubber anti-slip pads are bonded on one side face, opposite to the fixed limiting plate, of the movable limiting plate, the two rubber anti-slip pads are respectively attached to the outer surface of the electric wire, a telescopic rod is arranged in the spring, two ends of the telescopic rod are respectively connected with the inner wall of the groove and the movable limiting plate, an operating rod is fixed on the upper surface of the movable limiting plate, and a strip-shaped hole through which the operating rod passes is formed in the upper surface of the tester main body.

As a preferred scheme of the utility model, trapezoidal blocks are fixed on the front side and the rear side of the surface of the protective shell, and trapezoidal grooves for the trapezoidal blocks to slide are formed in the positions of the tester main body on the front side and the rear side of the display screen.

As a preferred scheme of the utility model, locking pins are fixed on the front side surface and the rear side surface of the protective shell, the locking blocks are provided with the locking pins, two locking holes for the locking pins to insert are respectively formed in the positions of the tester main body on the front side and the rear side of the display screen, and the protective shell is provided with an operation hole.

In the utility model:

the anti-interference insulation resistance testing device is provided with the fixing rod, the spiral spring is matched with the hollow rotary drum for use, the spring, the fixing limiting plate and the movable limiting plate are matched for use, the electric wire can be pulled out according to actual needs, the fixing limiting plate and the movable limiting plate are matched for limiting and clamping, further, the electric wire can be pulled out in proper length according to testing needs, the electric wire does not need to be pulled out completely, the spiral spring is used for enabling the electric wire to be folded quickly after the testing is finished, and the problem that the operation is influenced by the exposure of the electric wire is effectively avoided;

this anti-interference insulation resistance testing arrangement effectively protects the display screen through setting up protective housing, and then can open protective housing and cooperate fitting pin and latch segment to use when the test, closes protective housing after the test finishes to can utilize protective housing to protect, the protecting effect is good, simple structure, convenient operation, perfect function diversity.

Drawings

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

FIG. 2 is a schematic structural diagram of a test section according to the present invention;

FIG. 3 is a schematic top view, partially in section, of the present invention;

fig. 4 is an enlarged schematic view of a portion a of fig. 3 according to the present invention.

In the figure: 1. a tester main body; 2. fixing the rod; 3. a hollow drum; 4. a limiting disc; 5. an electric wire; 6. a clockwork spring; 7. testing the clamp; 8. fixing a limit plate; 9. a movable limit plate; 10. a spring; 11. a telescopic rod; 12. an operating lever; 13. a protective housing; 14. a trapezoidal block; 15. a trapezoidal groove; 16. a locking block; 17. a locking pin; 18. a locking hole; 19. an operation hole; 20. a guide ring.

Detailed Description

Examples

Referring to fig. 1-4, the utility model provides an anti-interference insulation resistance testing device, which comprises a tester body 1, wherein two cavities are formed in the tester body 1, a fixing rod 2 is installed in each cavity, a hollow rotary drum 3 is arranged outside each fixing rod 2 and is connected with the hollow rotary drum 3 through an elastic unit, each elastic unit comprises a plurality of clockwork springs 6 installed on the outer surface of each fixing rod 2, one ends, far away from the fixing rods 2, of the clockwork springs 6 are connected with the inner wall of the hollow rotary drum 3, the fixing rods 2 and the hollow rotary drums 3 are connected by using the clockwork springs 6 as the elastic units, electric wires 5 can be quickly folded after testing is finished by using the elastic action of the clockwork springs 6, and the operation convenience is greatly improved.

The both ends surface of hollow rotary drum 3 all is fixed with and is used for carrying out spacing dish 4 to electric wire 5, and the setting of spacing dish 4 can be spacing to 3 outside winding electric wires 5 of hollow rotary drum, breaks away from hollow rotary drum 3 when avoiding 5 windings of electric wire, has played fine spacing effect.

The outer surface of the hollow rotary drum 3 is wound with an electric wire 5, one end of the electric wire 5 is electrically connected with a circuit board inside the tester main body 1, the upper surface of the tester main body 1 is provided with a channel, the channel is connected with the cavity, the end part of the electric wire 5 passes through a guide ring 20 arranged on the inner wall of the cavity and the channel to extend out of the tester main body 1 and is electrically connected with a test fixture 7, the channel is internally provided with a groove, the groove and the channel are internally provided with a limiting unit for limiting and clamping the electric wire 5, the limiting unit comprises a spring 10 arranged in the groove, a movable limiting plate 9 arranged at one end of the spring 10 far away from the groove, a fixed limiting plate 8 arranged on the inner wall of the channel and opposite to the movable limiting plate 9, one side surface of the movable limiting plate 9 opposite to the fixed limiting plate 8 is bonded with rubber non-slip pads, and the two rubber non-slip pads are respectively attached to the outer surface of the electric wire 5, inside telescopic link 11 that is provided with both ends and is connected with recess inner wall and activity limiting plate 9 respectively of spring 10, the last fixed surface of activity limiting plate 9 has action bars 12, the bar hole that action bars 12 passed is seted up to 1 upper surface of tester main part, the reverse effort that utilizes spring 10 atress deformation to produce orders about activity limiting plate 9 cooperation fixed limiting plate 8 and carries out spacing chucking to electric wire 5, the chucking is effectual, and then can not appear not hard up phenomenon after guaranteeing that electric wire 5 pulls out suitable length, and the setting of rubber slipmat can further promote the spacing effect of chucking, and telescopic link 11 can further support spring 10 and activity limiting plate 9, make when activity limiting plate 9 moves stability better and be difficult for appearing the slope phenomenon of rocking.

The position department slidable mounting that tester main part 1 upper surface just is the display screen has protective housing 13, both sides all are fixed with trapezoidal piece 14 around protective housing 13 lower surface denomination, and tester main part 1 position department of both sides all sets up around the display screen and supplies the gliding dovetail groove 15 of trapezoidal piece 14, trapezoidal piece 14 and the cooperation of dovetail groove 15 are used and can be carried out spacing support to protective housing 13, make protective housing 13 can not break away from tester main part 1 and the motion stability better in the motion process.

The front side face and the rear side face of the protective shell 13 are both fixed with locking pins 17, the locking blocks 16 are provided with the locking pins 17, the positions of the tester body 1 on the front side and the rear side of the display screen are respectively provided with two locking holes 18 for inserting the locking pins 17, the protective shell 13 is provided with an operation hole 19, the protective shell 13 can be further locked in a limiting manner by the aid of the locking blocks 16 and the locking pins 17, and the protective shell 13 is in a good stable state when opened and closed.

The working principle is as follows: when a resistance test is required, an operator pulls the operating rod 12 to drive the movable limiting plate 9 to be separated from the electric wire 5 and extrude the spring 10 to contract, then pulls the test fixture 7 to drive the electric wire 5 to move, so that the hollow rotary drum 3 rotates to release the electric wire 5 and deform the clockwork spring 6, releases the operating rod 12 after pulling out a proper length, makes the movable limiting plate 9 approach to the fixed limiting plate 8 by using the elasticity of the spring 10 to realize the clamping and limiting of the electric wire 5, then pulls out another test fixture 7 in the same way, clamps a detection point by using the two test fixtures 7, then pulls out the locking pin 17 to separate from the locking hole 18 on the left side, slides the protective shell 13 to the right to open without shielding the display screen, then the locking pin 17 penetrates through the locking block 16 to be inserted into the locking hole 18 on the right side, starts the tester body 1 to perform a test operation, pulls out the locking pin 17 to slide the protective shell 13 to recover the original position after the test is finished, and the locking pin 17 is inserted into the locking hole 18 at the left side, and then the operating rod 12 is pulled, so that the movable limit plate 9 releases the limit of the electric wire 5, and the hollow drum 3 is restored to the original position by the elasticity of the clockwork spring 6.

Claims

1. An anti-interference insulation resistance testing device is characterized by comprising a tester main body (1), wherein two cavities are formed in the tester main body (1), a fixing rod (2) is installed in each cavity, a hollow rotary drum (3) is arranged outside each fixing rod (2) and is connected with the hollow rotary drum (3) through an elastic unit, an electric wire (5) is wound on the outer surface of each hollow rotary drum (3), one end of each electric wire (5) is electrically connected with a circuit board in the tester main body (1), a channel is formed in the upper surface of the tester main body (1) and is connected with the cavities, the end of each electric wire (5) penetrates through a guide ring (20) installed on the inner wall of each cavity and the channel to extend out of the tester main body (1) and is electrically connected with a testing clamp (7), a groove is formed in each channel, and a limiting unit for limiting and clamping the electric wire (5) is arranged in each channel, the tester main part (1) upper surface is just to the position department slidable mounting of display screen has protective housing (13).

2. The anti-interference insulation resistance testing device according to claim 1, wherein the elastic unit comprises a plurality of springs (6) mounted on the outer surface of the fixing rod (2), and one end of each spring (6) far away from the fixing rod (2) is connected with the inner wall of the hollow drum (3).

3. The anti-interference insulation resistance testing device according to claim 1, wherein limiting discs (4) for limiting the electric wires (5) are fixed on the outer surfaces of the two ends of the hollow rotating cylinder (3).

4. The anti-interference insulation resistance testing device according to claim 1, wherein the limiting unit comprises a spring (10) installed in the groove, a movable limiting plate (9) installed at one end of the spring (10) far away from the groove, a fixed limiting plate (8) installed on the inner wall of the channel and arranged opposite to the movable limiting plate (9), rubber anti-skid pads are bonded on one side surface of the movable limit plate (9) opposite to the fixed limit plate (8), the two rubber anti-slip pads are respectively attached to the outer surface of the electric wire (5), a telescopic rod (11) with two ends respectively connected with the inner wall of the groove and the movable limiting plate (9) is arranged in the spring (10), the upper surface of activity limiting plate (9) is fixed with action bars (12), the bar hole that action bars (12) passed is seted up to tester main part (1) upper surface.

5. The anti-interference insulation resistance testing device according to claim 1, wherein trapezoidal blocks (14) are fixed on the front side and the rear side of the lower surface of the protective shell (13), and trapezoidal grooves (15) for the trapezoidal blocks (14) to slide are formed in the positions of the tester main body (1) on the front side and the rear side of the display screen.

6. The anti-interference insulation resistance testing device according to claim 1, wherein locking blocks (16) are fixed to the front side and the rear side of the protective shell (13), locking pins (17) are arranged on the locking blocks (16), two locking holes (18) for the locking pins (17) to be inserted into are formed in the positions of the tester body (1) on the front side and the rear side of the display screen, and an operation hole (19) is formed in the protective shell (13).