CN214041562U

CN214041562U - Portable current transformer test clamp

Info

Publication number: CN214041562U
Application number: CN202022296590.0U
Authority: CN
Inventors: 程兴胜; 徐培军
Original assignee: Xi'an Rich Electrical Co ltd
Current assignee: Xi'an Rich Electrical Co ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-08-24
Anticipated expiration: 2030-10-15

Abstract

The utility model discloses a portable current transformer test pincers, including first bracing piece and second bracing piece, the spout has been seted up on the lateral wall of second bracing piece, the interior top of spout is rotated and is connected with double threaded rod, threaded connection has a plurality of centre gripping arms on the double threaded rod, the coaxial fixedly connected with rectangular block of one end of keeping away from the centre gripping arm on the double threaded rod, keep away from a plurality of column bodies of one end fixedly connected with of spout on the second bracing piece, the pinhole has been seted up on the lateral wall of column body, the columnar groove has been seted up on the lateral wall of first bracing piece, the interior bottom of columnar groove rotates and is connected with the pivot. The utility model discloses a set up stop device, stimulate the pivot, when spacing spring deformation reaches a certain degree, the pivot can be deviate from in the pinhole to can make first bracing piece and second bracing piece quickly separating, can realize being convenient for to carrying and the transportation of device to the quick assembly disassembly of device.

Description

Portable current transformer test clamp

Technical Field

The utility model relates to an electric power tech field especially relates to a portable current transformer test pincers.

Background

The instrument transformer tester is a field instrument transformer tester developed by analyzing a mathematical model of the instrument transformer in detail on the basis of an instrument transformer calibrator, and can directly measure the transformation ratio of the current instrument transformer and also can qualitatively measure the ratio difference and the polarity of the current instrument transformer.

The test clamp is an important component of a current transformer tester, and a wire is clamped by a clamping arm of the test clamp, so that a relevant value is measured by means of conduction of an electric signal. However, most of current transformers have integrated testing pliers, and have certain length, so that the testing pliers not only occupy larger space, but also are not convenient to carry and transport for long distance, and unnecessary troubles are caused to the work of power personnel. Based on this problem, the utility model provides a solution.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a portable current transformer testing clamp.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a portable current transformer test clamp comprises a first supporting rod and a second supporting rod, wherein a sliding groove is arranged on the side wall of the second supporting rod, the inner top of the chute is rotationally connected with a double-threaded rod, the double-threaded rod is in threaded connection with a plurality of clamping arms, a rectangular block is coaxially and fixedly connected with one end of the double-end threaded rod, which is far away from the clamping arm, a plurality of cylindrical bodies are fixedly connected with one end of the second supporting rod, which is far away from the sliding groove, the side wall of the cylindrical body is provided with a pin hole, the side wall of the first supporting rod is provided with a cylindrical groove, the inner bottom of the cylindrical groove is rotatably connected with a rotating shaft, the upper end of the rotating shaft is provided with a rectangular groove, a plurality of grooves are formed in the upper end of the first supporting rod, a limiting groove is formed in the side wall of the first supporting rod, and a limiting device capable of limiting the pin hole is installed in the limiting groove.

Preferably, the limiting device comprises a shaft pin which is slidably connected to the inner wall of the limiting groove, a limiting spring is sleeved on the shaft pin along the axis direction, and a limiting plate is fixedly connected to the side wall of the shaft pin.

Preferably, a plurality of buffer springs are fixedly connected to the inner wall of the sliding groove, and the free end of each buffer spring is fixedly connected with the side wall of the clamping arm.

Preferably, the side wall of the clamping arm is provided with a clamping groove, and the inner wall of the clamping groove is carved with anti-skid lines.

Preferably, the lower end of the first support rod is rotatably connected with a hand wheel, and the hand wheel is coaxially and fixedly connected with the rotating shaft.

Preferably, the first support rod and the second support rod have the same length and are made of insulating materials.

The utility model discloses following beneficial effect has:

1. through the arrangement of the limiting device, the shaft pin is pulled, the limiting plate can compress the limiting spring, when the limiting spring deforms to a certain degree, the shaft pin can be separated from the pin hole, and the columnar body can be pulled out of the groove, so that the first supporting rod and the second supporting rod can be quickly separated, the device can be quickly disassembled and assembled, the device is convenient to carry and transport, and meanwhile, a certain space can be saved;

2. through setting up double threaded rod mechanism, rotate the hand wheel and can drive the pivot and rotate, because of the rectangular block joint is in the rectangular channel, so the pivot can drive double threaded rod and rotate to the centre gripping arm slides in the spout along with double threaded rod's rotation, and this makes the interval between the centre gripping arm have the controllability, thereby makes the centre gripping arm can carry out the centre gripping to the wire of different diameters.

Drawings

Fig. 1 is a schematic structural view of a portable current transformer testing clamp provided by the present invention;

FIG. 2 is a schematic structural view of a section A-A of the portable current transformer testing clamp provided by the present invention;

fig. 3 is an enlarged schematic view of the structure at the B position of the portable current transformer testing clamp provided by the utility model.

In the figure: the device comprises a first supporting rod 1, a second supporting rod 2, a buffer spring 3, a sliding groove 4, a clamping arm 5, a clamping groove 6, a hand wheel 7, a double-threaded rod 8, a rotating shaft 9, a rectangular block 10, a rectangular groove 11, a cylindrical body 12, a groove 13, a pin hole 14, a limiting groove 15, a shaft pin 16, a limiting plate 17, a limiting spring 18 and a cylindrical groove 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "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 simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, a portable current transformer test clamp comprises a first support rod 1 and a second support rod 2, wherein the first support rod 1 and the second support rod 2 are the same in length and made of insulating materials. Seted up spout 4 on the lateral wall of second bracing piece 2, the interior top of spout 4 is rotated and is connected with double threaded rod 8, and threaded connection has a plurality of centre gripping arms 5 on the double threaded rod 8. It should be noted that, the fit clearance between the clamping arm 5 and the chute 4 is not less than one millimeter, which prevents the clamping arm 5 from being stuck during the movement process, thereby negatively affecting the measurement result. A plurality of buffer springs 3 are fixedly connected to the inner wall of the sliding groove 4, and the free end of each buffer spring 3 is fixedly connected with the side wall of the clamping arm 5. The side wall of the clamping arm 5 is provided with a clamping groove 6, and the inner wall of the clamping groove 6 is carved with anti-skid lines.

Keep away from the coaxial fixedly connected with rectangular block 10 of one end of centre gripping arm 5 on the double threaded rod 8, keep away from a plurality of cylindricality bodies 12 of one end fixedly connected with of spout 4 on the second bracing piece 2, seted up pinhole 14 on the lateral wall of cylindricality body 12, seted up cylindrical groove 19 on the lateral wall of first bracing piece 1, the interior bottom rotation in cylindrical groove 19 is connected with pivot 9, the lower extreme rotation of first bracing piece 1 is connected with hand wheel 7, hand wheel 7 and the coaxial fixed connection of pivot 9. The upper end of the rotating shaft 9 is provided with a rectangular groove 11, and the upper end of the first supporting rod 1 is provided with a plurality of grooves 13.

The side wall of the first supporting rod 1 is provided with a limiting groove 15, and a limiting device capable of limiting the pin hole 14 is installed in the limiting groove 15. The limiting device comprises a shaft pin 16 connected to the inner wall of the limiting groove 15 in a sliding mode, a limiting spring 18 is sleeved on the shaft pin 16 along the axis direction, and a limiting plate 17 is fixedly connected to the side wall of the shaft pin 16. It should be noted that the check spring 18 should have a large yield strength to prevent the check spring 18 from being plastically deformed in a short time.

In the use, it can drive pivot 9 and rotate to rotate hand wheel 7, because of rectangular block 10 joint is in rectangular channel 11, event pivot 9 can drive double threaded rod 8 and rotate, thereby centre gripping arm 5 slides in spout 4 along with double threaded rod 8's rotation, this makes the interval between the centre gripping arm 5 have the controllability, thereby make centre gripping arm 5 can carry out the centre gripping to the wire of different diameters, draw-in groove 6 can prevent to deviate from between centre gripping arm 5 at the in-process wire of centre gripping, buffer spring 3 can play the effect of motion buffering to centre gripping arm 5 simultaneously, can play the effect of protection to centre gripping arm 5 to a certain extent. When the test pincers do not use, pulling pivot 16, limiting plate 17 can compress limiting spring 18, when limiting spring 18 warp to a certain extent, pivot 16 can be deviate from in pinhole 14, and then can extract cylindricality body 12 from recess 13, thereby can make first bracing piece 1 and second bracing piece 2 quickly separating, can realize the quick assembly disassembly to the device, both portable and transportation, also can practice thrift certain space simultaneously, the work of giving electric power personnel has brought certain facility.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A portable current transformer testing clamp comprises a first supporting rod (1) and a second supporting rod (2), and is characterized in that a sliding groove (4) is formed in the side wall of the second supporting rod (2), the inner top of the sliding groove (4) is rotatably connected with a double-threaded rod (8), a plurality of clamping arms (5) are in threaded connection with the double-threaded rod (8), one end of the double-threaded rod (8), far away from the clamping arms (5), is coaxially and fixedly connected with a rectangular block (10), one end of the second supporting rod (2), far away from the sliding groove (4), is fixedly connected with a plurality of cylindrical bodies (12), pin holes (14) are formed in the side wall of each cylindrical body (12), a cylindrical groove (19) is formed in the side wall of the first supporting rod (1), a rotating shaft (9) is rotatably connected to the inner bottom of the cylindrical groove (19), and a rectangular groove (11) is formed in the upper end of the rotating shaft (9, the upper end of the first supporting rod (1) is provided with a plurality of grooves (13), the side wall of the first supporting rod (1) is provided with a limiting groove (15), and a limiting device capable of limiting the pin hole (14) is installed in the limiting groove (15).

2. The portable current transformer testing tong according to claim 1, characterized in that the limiting device comprises a shaft pin (16) slidably connected to the inner wall of the limiting groove (15), a limiting spring (18) is sleeved on the shaft pin (16) along the axial direction, and a limiting plate (17) is fixedly connected to the side wall of the shaft pin (16).

3. The portable current transformer test clamp according to claim 1, wherein a plurality of buffer springs (3) are fixedly connected to the inner wall of the sliding groove (4), and the free end of each buffer spring (3) is fixedly connected to the side wall of the clamping arm (5).

4. The portable current transformer test clamp as claimed in claim 1, wherein a clamping groove (6) is formed in a side wall of the clamping arm (5), and anti-slip lines are carved on an inner wall of the clamping groove (6).

5. The portable current transformer test clamp according to claim 1, wherein a hand wheel (7) is rotatably connected to the lower end of the first support rod (1), and the hand wheel (7) is coaxially and fixedly connected with the rotating shaft (9).

6. The portable current transformer test clamp according to claim 1, wherein the first support rod (1) and the second support rod (2) have the same length, and are made of insulating materials.