CN202562991U

CN202562991U - Clamp ampere meter

Info

Publication number: CN202562991U
Application number: CN2012201920657U
Authority: CN
Inventors: 杨东明
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-22
Filing date: 2012-04-22
Publication date: 2012-11-28
Anticipated expiration: 2022-04-22

Abstract

The utility model discloses a clamp ampere meter which uses linkage transmission. According to the design, an insulating pull rod and a rotary cylinder are introduced, so that a moveable magnetic head is rotatably opened. Therefore, the clamp ampere meter can be hoisted through the insulating pull rod. Furthermore, the clamp ampere meter is prevented from being held by hands. The high-voltage current is conveniently measured; and the clamp ampere meter is convenient and practical.

Description

A kind of clamp on amperemeter

Technical field

The utility model relates to a kind of current measuring device, relates in particular to a kind of clamp on amperemeter.

Background technology

Under existing measuring technique; For line current measurement; The general clamp on amperemeter that uses carries out, and this operating process is generally held measuring equipment by the gauger at the lead place, and handle mechanism is closed in the switching of operating pincerlike meter simultaneously opens pincerlike magnetic circuit; Then test line is put into magnetic circuit; Closed magnetic circuit, the changes of magnetic field that the electric current variation produces in the lead has like this produced magnetic flux in closed magnetic circuit variation, the electric current that produce this moment in the secondary circuit of pincerlike meter is directly proportional with the electric current of major loop.Current values through measuring and read secondary circuit is calculated the current value that obtains loop to be measured.

Clamp on amperemeter can be measured electric current under the situation of cutoff circuit not, easy to operate, thus use very wide, still owing to when measuring, need the gauger in the other operation of lead, so receive safe distance restriction, this device can't be used for the measurement of high-tension current.

The utility model content

The utility model technical matters to be solved provides a kind of clamp on amperemeter, can measure on safe ready ground for high-tension current.

In order to solve the problems of the technologies described above, the utility model is taked following technical scheme:

A kind of clamp on amperemeter; Comprise gauge stand (9); Magnetostatic head (1) is fixed on the gauge stand (9), and moving magnetic head (2) is hinged through axle (5) with magnetostatic head (1), it is characterized in that: on gauge stand (9), be provided with chute (403); Establish slide block (404) in the chute (403), join sheet (402) and be hinged with moving magnetic head (2) and slide block (404) respectively; On gauge stand (9), be provided with rotating cylinder (4), rotating cylinder (4) top fixed installation pivot arm (400), master connecting-rod (401) one ends are hinged on the pivot arm (400) through axle (408), and the other end links to each other with slide block (404); On moving magnetic head (2) or magnetostatic head (1), be with inductive coil (3), inductive coil (3) links to each other with current measuring device (6).

Specifically; Joining sheet (402) one ends is hinged through axle (405) and moving magnetic head (2); The other end is hinged through axle (406) and slide block (404), and axle (406) crosses slide block (404), on axle (406), is provided with axis hole; Be provided with axle (407) in the axis hole, master connecting-rod and slide block (404) are hinged through axle (407).

On rotating cylinder (4), also be provided with the insulated tension pole slot, said current measuring device (6) adopts reometer, above the current data wireless transmitter can also be installed.

Simultaneously, slide block (404) also can link to each other with back-moving spring (7).

During the utility model uses, insulated tension pole is inserted in the slot of rotating cylinder, rotates rotating cylinder, through the mode of connecting rod transmission, can be easily with moving the magnetic head Unscrew, thereby avoided direct dominated by hand, be convenient to measure high-tension current; Current measuring device can be extrapolated the size of loop current to be measured according to the size of secondary current, also can utilize wireless transmitter that current data is sent out, and has avoided data to read difficulty.

Description of drawings

Fig. 1 is the utility model closing structure synoptic diagram;

Fig. 2 is pivot arm among Fig. 1, master connecting-rod, slide block, chute annexation vertical view;

Fig. 3 is the utility model Unclosing structure synoptic diagram;

Fig. 4 is pivot arm among Fig. 3, master connecting-rod, slide block, chute annexation vertical view.

Embodiment

Below in conjunction with accompanying drawing, through embodiment the utility model is done to specify:

As shown in Figure 1, on gauge stand 9, be installed with magnetostatic 1, moving magnetic head 2 is hinged on magnetostatic 1 through axle 5, can rotate around magnetostatic 1.Chute 403 is fixedly mounted on the gauge stand 9, and chute 403 has up and down two cell walls, about do not have sidewall, slide block 404 is arranged in the chute 403; Can in chute 403, be free to slide, axle 406 along continuous straight runs cross slide block 404, join sheet 402 1 ends and have axis hole; Be enclosed within the axle 406 on, have vertical axis hole at axle 406 1 ends, in have the axle 407; Master connecting-rod 401 1 ends are hinged on the axle 406 through axle 407, and master connecting-rod 401 other ends are hinged on through axle 408 that (Fig. 2, pivot arm are disk on the pivot arm 400; Also can substitute disk with connecting rod or cam, make connecting rod or cam one end be fixed on the center at rotating cylinder 4 tops, the other end and master connecting-rod 401 are hinged); Pivot arm 400 is fixedly connected on the rotating cylinder 4, and rotating cylinder 4 is installed on the gauge stand 9, and can rotate freely.For increasing dynamic and static contact area, on magnetic head 2, leave a triangle joint, it is hinged through axle 405 and this joint to join sheet 402 other ends.

Inductive coil 3 is enclosed within on magnetostatic 1 and (perhaps is enclosed within on the moving magnetic head 2); Link to each other with current-flow test set 6 simultaneously, current-flow test set 6 is a reometer, and the current data wireless transmitter can also be installed, and (wireless base station apparatus is a known technology; Can adopt radio, sound, light etc. to send data); So that staff's handheld device can with pincerlike meter interworking Data transmission, see table thereby need not ascend a height, promptly know size of current.On gauge stand 9, be provided with back-moving spring 7 and link to each other with slide block 404, back-moving spring 7 both can make slide block 404 reset easily, can make magnetic head 2 and magnetostatic 1 tight closure again.

In the use; Insulated tension pole is inserted in the slot of rotating cylinder 4, clamp on amperemeter is initially located in closure state (Fig. 1), and gauge stand 9 dominated by hand also rotates insulated tension pole rotating cylinder 4 is rotated along direction shown in the arrow 101; Driven rotary arm 400 rotates; And drive master connecting-rod 401, slide block 404 successively and join sheet 402 motions, join the moving magnetic head 2 of sheet 402 pulling downwards, make magnetic head 2 open (Fig. 3, shown in Figure 4).High-voltage conducting wires is inserted in the clamp on amperemeter from the slit of opening; Provide at tested lead and continue rotating insulated pull bar under the effect of opposite force; Pivot arm 400 moves in a circle, and instead pushes away master connecting-rod 401, and then makes slide block 404 reverse slide (back-moving spring 7 shrinks pulling slide block 404 simultaneously); Slide block 404 promotes to join sheet 402 and moves upward, and makes clamp on amperemeter closed.After moving magnetic head 2 and magnetostatic 1 closure, form closed magnetic circuit, on magnetostatic 1, be with inductive coil 3, receive exchange current effect to be measured to produce induction current, measured, can extrapolate the size of the electric current of surveying by current measuring device 6.

Claims

1. clamp on amperemeter; Comprise gauge stand (9); Magnetostatic head (1) is fixed on the gauge stand (9), and moving magnetic head (2) is hinged through axle (5) with magnetostatic head (1), it is characterized in that: on gauge stand (9), be provided with chute (403); Establish slide block (404) in the chute (403), join sheet (402) and be hinged with moving magnetic head (2) and slide block (404) respectively; On gauge stand (9), be provided with rotating cylinder (4), rotating cylinder (4) top fixed installation pivot arm (400), master connecting-rod (401) one ends are hinged on the pivot arm (400) through axle (408), and the other end links to each other with slide block (404); On moving magnetic head (2) or magnetostatic head (1), be with inductive coil (3), inductive coil (3) links to each other with current measuring device (6).

2. clamp on amperemeter as claimed in claim 1; It is characterized in that: join sheet (402) one ends and be hinged through axle (405) and moving magnetic head (2); The other end is hinged through axle (406) and slide block (404), and axle (406) crosses slide block (404), on axle (406), is provided with axis hole; Be provided with axle 407 in the axis hole, master connecting-rod and slide block (404) are hinged through axle (407).

3. according to claim 1 or claim 2 clamp on amperemeter, it is characterized in that: on rotating cylinder (4), be provided with the insulated tension pole slot, said current measuring device (6) is a reometer, and the current data wireless transmitter is installed.

4. clamp on amperemeter as claimed in claim 3 is characterized in that: slide block (404) links to each other with back-moving spring (7).