Clip-on current measuring device

Abstract

The utility model relates to the technical field of clip-on current measurement, in particular to a clip-on current measuring device, which is provided with an extension mechanism and a driving mechanism, so that equipment can be extended to measure places where personnel are inconvenient to enter in the current measuring process, the personnel safety is improved, and the measurement is convenient. Comprising a measuring mechanism; the device further comprises a connecting mechanism, an extension mechanism, a driving mechanism and a fixing mechanism, the connecting mechanism is installed at the lower end of the measuring mechanism, the extension mechanism is installed on the connecting mechanism, the driving mechanism is installed on the extension mechanism, and the fixing mechanism is installed on the driving mechanism. The measuring mechanism is used for measuring, the connecting mechanism is used for connecting, the extending mechanism is used for extending, the driving mechanism is used for driving the measuring mechanism, and the fixing mechanism is used for hooking.

Description

Technical Field

[0001] The utility model relates to the technical field of clamp current measurement, in particular to a clamp current measuring device. Background Art

[0002] In power engineering, clamp ammeters have been widely used. Clamp ammeters mainly include structures such as current transformers and ammeters. When in use, the clamp head of the clamp ammeter is clamped to the measuring position to achieve current measurement.

[0003] In the existing clamp current measuring devices, for example, a telescopic clamp current measuring device disclosed in the utility model patent with application number 202122484235.0 can reduce the requirements for the measurement space and facilitate operation.

[0004] However, in the process of clamp current measurement, it is impossible to measure in places that are difficult for people to enter, such as deep in the electric well. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a clamp current measuring device which is provided with an extension mechanism and a driving mechanism so that during the current measurement process, the device can be extended to perform measurements in places that are inconvenient for personnel to enter, thereby improving personnel safety and facilitating measurement.

[0006] The utility model discloses a clamp current measuring device, comprising a measuring mechanism; a connecting mechanism, an extending mechanism, a driving mechanism and a fixing mechanism, wherein the connecting mechanism is mounted at the lower end of the measuring mechanism, the extending mechanism is mounted on the connecting mechanism, the driving mechanism is mounted on the extending mechanism, and the fixing mechanism is mounted on the driving mechanism;

[0007] The measuring mechanism performs measurement, the connecting mechanism performs connection, the extending mechanism performs extension, the driving mechanism drives the measuring mechanism, and the fixing mechanism performs hooking; the extending mechanism and the measuring mechanism are connected and disassembled by the connecting mechanism, extended by the extending mechanism, fixed by the fixing mechanism and the measuring mechanism, the measuring mechanism is opened and closed by pulling the driving mechanism, and the measuring mechanism is used for measurement, so that during the current measurement process, the equipment can be extended to perform measurement in places that are inconvenient for personnel to enter, thereby improving personnel safety and facilitating measurement.

[0008] Preferably, the measuring mechanism includes a pliers arm, a plastic handle and two sets of compensation coils. The plastic handle is rotatably mounted on the pliers arm, and the two sets of compensation coils are sleeved on the pliers arm and the plastic handle. Both sets of compensation coils are provided with an electric field shielding layer. The compensation coil measures the current by opening the plastic handle and fitting the pliers arm to insert the wire.

[0009] Preferably, the connecting mechanism includes a connecting block and a connecting sleeve, the connecting block is installed at the lower end of the clamp arm, and the connecting sleeve is installed on the connecting block through a slot; the measuring mechanism is connected by the connection block and the connecting sleeve, which is convenient for disassembly and assembly.

[0010] Preferably, the extension mechanism includes a sleeve and a screw, the sleeve is slidably mounted on the connecting sleeve, a base plate is provided at the bottom of the sleeve, the screw is rotatably installed in the sleeve, and the screw and the connecting sleeve are threadedly engaged; the connecting sleeve is slidably extended along the direction of the sleeve by rotating the screw and threading the connecting sleeve.

[0011] Preferably, the driving mechanism includes a pull rod, a spring and a sleeve rod. The pull rod is slidably mounted on the bottom plate of the sleeve through the spring, and the sleeve rod is sleeved on the pull rod. The plastic handle is driven by rotating the pull rod to clamp the sleeve rod and pull, and the device is reset by the spring.

[0012] Preferably, the fixing mechanism includes a fixing frame, a screw, a gasket and a nut. The fixing frame is installed on the upper end of the sleeve rod, the screw is installed on the fixing frame, the gasket is sleeved on the screw, and the nut and the screw are installed by threaded cooperation; the screw extends into the plastic handle, the plastic handle is limited by the gasket, and the gasket is fixed by the nut.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the extending mechanism and the measuring mechanism are connected and disassembled through the connecting mechanism, extended through the extending mechanism, fixed to the measuring mechanism through the fixing mechanism, opened and closed by pulling the driving mechanism, and measured through the measuring mechanism, so that during the current measurement process, the equipment can be extended to measure in places that are inconvenient for personnel to enter, thereby improving personnel safety and facilitating measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a first axonometric structural schematic diagram of the utility model;

[0015] Figure 2 It is a second axonometric structural schematic diagram of the utility model;

[0016] Figure 3 It is a schematic diagram of the front view and section axonometric structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the axonometric structure of the utility model in a bottom-view cross-section;

[0018] Markings in the accompanying drawings: 1. Measuring mechanism; 11. Clamp arm; 12. Plastic handle; 13. Compensating coil; 2. Connecting mechanism; 21. Connecting block; 22. Connecting sleeve; 3. Extending mechanism; 31. Sleeve; 32. Screw; 4. Driving mechanism; 41. Pull rod; 42. Spring; 43. Sleeve rod; 5. Fixing mechanism; 51. Fixing frame; 52. Screw; 53. Washer; 54. Nut. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0020] Example

[0021] like Figures 1 to 4 As shown, a clamp current measuring device includes a measuring mechanism 1, a connecting mechanism 2, an extending mechanism 3, a driving mechanism 4 and a fixing mechanism 5, wherein the connecting mechanism 2 is mounted at the lower end of the measuring mechanism 1, the extending mechanism 3 is mounted on the connecting mechanism 2, the driving mechanism 4 is mounted on the extending mechanism 3, and the fixing mechanism 5 is mounted on the driving mechanism 4;

[0022] The measuring mechanism 1 performs measurement, the connecting mechanism 2 performs connection, the extending mechanism 3 performs extension, the driving mechanism 4 drives the measuring mechanism 1, and the fixing mechanism 5 performs hooking;

[0023] The measuring mechanism 1 comprises a clamp arm 11, a plastic handle 12 and two groups of compensation coils 13. The plastic handle 12 is rotatably mounted on the clamp arm 11. The two groups of compensation coils 13 are sleeved on the clamp arm 11 and the plastic handle 12. Both groups of compensation coils 13 are provided with electric field shielding layers.

[0024] The connecting mechanism 2 includes a connecting block 21 and a connecting sleeve 22. The connecting block 21 is installed at the lower end of the clamp arm 11, and the connecting sleeve 22 is installed on the connecting block 21 through a slot.

[0025] The extension mechanism 3 includes a sleeve 31 and a screw 32. The sleeve 31 is slidably mounted on the connecting sleeve 22. A bottom plate is provided at the bottom of the sleeve 31. The screw 32 is rotatably mounted in the sleeve 31, and the screw 32 is threadably matched with the connecting sleeve 22.

[0026] The driving mechanism 4 includes a pull rod 41, a spring 42 and a sleeve rod 43. The pull rod 41 is slidably mounted on the bottom plate of the sleeve 31 through the spring 42, and the sleeve rod 43 is sleeved on the pull rod 41.

[0027] The fixing mechanism 5 includes a fixing frame 51, a screw 52, ​​a gasket 53 and a nut 54. The fixing frame 51 is mounted on the upper end of the sleeve rod 43, the screw 52 is mounted on the fixing frame 51, the gasket 53 is sleeved on the screw 52, ​​and the nut 54 is threadedly matched with the screw 52.

[0028] The measuring mechanism 1 is connected by the connection block 21 and the connection sleeve 22, which is convenient for disassembly and assembly. The connecting sleeve 22 is slid and extended along the direction of the sleeve 31 by rotating the screw 32 and threading it with the connecting sleeve 22, and the plastic handle 12 is extended by the screw 52, ​​and the plastic handle 12 is limited by the gasket 53, and the gasket 53 is fixed by the nut 54. The plastic handle 12 is driven by pulling the sleeve rod 43 by rotating the pull rod 41, and the device is returned to its position by the spring 42. The plastic handle 12 is opened and the clamp arm 11 is cooperated to insert the wire so that the compensation coil 13 can measure the current. Therefore, during the current measurement process, the device can be extended to measure the places that are inconvenient for personnel to enter, thereby improving personnel safety and facilitating measurement.

[0029] like Figures 1 to 4 As shown, the utility model is a clamp-type current measuring device. When working, the measuring mechanism 1 is connected by the connection block 21 and the connection sleeve 22, which is convenient for disassembly and assembly. The connecting sleeve 22 is slid and extended along the direction of the sleeve 31 by rotating the screw 32 and threading it with the connecting sleeve 22, and the connecting sleeve 22 is extended into the plastic handle 12 by the screw 52, ​​and the plastic handle 12 is limited by the gasket 53, and the gasket 53 is fixed by the nut 54. The plastic handle 12 is driven by pulling the sleeve rod 43 by rotating the pull rod 41, and the device is reset by the spring 42. The plastic handle 12 is opened to cooperate with the clamp arm 11 to insert the wire so that the compensation coil 13 can measure the current.

[0030] The main function achieved by the utility model is: during the clamp current measurement process, by setting the extension mechanism and the driving mechanism, the device can be extended to measure the places that are inconvenient for personnel to enter during the current measurement process, thereby improving the safety of personnel and facilitating measurement.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A clamp current measuring device, comprising a measuring mechanism (1); characterized in that: It also comprises a connecting mechanism (2), an elongating mechanism (3), a driving mechanism (4) and a fixing mechanism (5), wherein the connecting mechanism (2) is mounted on the lower end of the measuring mechanism (1), the elongating mechanism (3) is mounted on the connecting mechanism (2), the driving mechanism (4) is mounted on the elongating mechanism (3), and the fixing mechanism (5) is mounted on the driving mechanism (4); The measuring mechanism (1) performs measurement, the connecting mechanism (2) performs connection, the extending mechanism (3) performs extension, the driving mechanism (4) drives the measuring mechanism (1), and the fixing mechanism (5) performs hooking; The connecting mechanism (2) comprises a connecting block (21) and a connecting sleeve (22), wherein the connecting block (21) is mounted on the lower end of the clamp arm (11), and the connecting sleeve (22) is mounted on the connecting block (21) via a slot; The driving mechanism (4) comprises a pull rod (41), a spring (42) and a sleeve rod (43); the pull rod (41) is slidably mounted on a bottom plate of the sleeve (31) via the spring (42); and the sleeve rod (43) is sleeved on the pull rod (41).

2. A clamp current measuring device as claimed in claim 1, characterized in that: The measuring mechanism (1) comprises a clamp arm (11), a plastic handle (12) and two groups of compensation coils (13); the plastic handle (12) is rotatably mounted on the clamp arm (11); the two groups of compensation coils (13) are sleeved on the clamp arm (11) and the plastic handle (12); and both groups of compensation coils (13) are provided with electric field shielding layers.

3. A clamp current measuring device as claimed in claim 1, characterized in that: The extension mechanism (3) comprises a sleeve (31) and a screw (32). The sleeve (31) is slidably mounted on the connecting sleeve (22). A bottom plate is provided at the bottom of the sleeve (31). The screw (32) is rotatably mounted in the sleeve (31), and the screw (32) is threadably matched with the connecting sleeve (22).

4. A clamp current measuring device as claimed in claim 1, characterized in that: The fixing mechanism (5) comprises a fixing frame (51), a screw (52), a gasket (53) and a nut (54). The fixing frame (51) is mounted on the upper end of the sleeve rod (43), the screw (52) is mounted on the fixing frame (51), the gasket (53) is sleeved on the screw (52), and the nut (54) is threadably mounted on the screw (52).

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