Digital clip-on ammeter

Abstract

The utility model provides a digital clip-on ammeter, which relates to the technical field of electric power detection and comprises a U-shaped ammeter body, three groups of display meters and three groups of gear knobs are arranged at the top of the U-shaped ammeter body, and a circuit board and a storage battery are arranged in the U-shaped ammeter body; three groups of hinge seats are rotatably arranged at the inner corner of the U-shaped meter body, and rotary meter rods are fixedly arranged outside the hinge seats; a fixed seat is fixedly arranged on the right side of the U-shaped meter body; the three groups of rotating meter rods are arranged, the function of synchronously performing three-phase detection and comparison is provided, the three groups of rotating meter rods are rotated to different angles to approach different cables, the control piston is stretched, the three groups of branch pistons are all contracted, the sliding seat is moved, and each group of meter clamps are pulled open in cooperation with the connecting rod. At the moment, the meter clamp can be buckled outside the cable to detect three-phase electricity, the display meter can be rotated to a corresponding position by adjusting the gear knob, the current difference can be calculated by measuring three groups of cables at the same time, and the problem that an existing ammeter is inconvenient for three-phase comparative detection is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric power detection, and more specifically, relates to a digital clamp ammeter. Background Art

[0002] The clamp ammeter can detect the running equipment, but it needs to be tested separately. When measuring three-phase electricity, it is impossible to directly measure the difference. It is necessary to test and compare them one by one to get the value.

[0003] Based on the above, the currently used clamp meters are not convenient for testing three groups of lines at the same time as needed, lack the function of synchronous three-phase detection and comparison, and are not convenient for flexible application as needed. Utility Model Content

[0004] In order to solve the above technical problems, the present invention provides a digital clamp ammeter to solve the problems raised in the above background technology that the existing clamp meter is inconvenient to detect three groups of lines at the same time as needed, lacks the function of synchronous three-phase detection and comparison, and is inconvenient to be flexibly applied as needed.

[0005] The purpose and function of the digital clamp ammeter of the present invention are achieved by the following specific technical means:

[0006] A digital clamp ammeter comprises a U-shaped body, the top of which is mounted with three sets of display meters and three sets of gear knobs, a circuit board and a battery being arranged inside the U-shaped body; three sets of hinged seats are rotatably arranged at the inner corners of the U-shaped body, and a rotating meter rod is fixedly arranged on the outside of each hinged seat; a fixed seat is fixedly arranged on the right side of the U-shaped body, and the fixed seat limits the rotating meter rod from rotating 0 to 90 degrees.

[0007] Furthermore, a control piston is fixedly provided on the rear side of the fixing seat, and a short handle for convenient control is fixedly provided on the telescopic end of the control piston.

[0008] Furthermore, two groups of power tubes are fixedly installed inside the rotating meter rod, and a slide is provided outside the two groups of power tubes; meter clamps are rotatably provided on both sides of the front end of the rotating meter rod, and connecting rods are hingedly provided between the meter clamps and both sides of the slide.

[0009] Furthermore, a branch piston is fixedly provided on the front inner side of the rotating watch rod, and a spring is provided on the outer sleeve of the telescopic end of the branch piston.

[0010] Furthermore, the branch piston and the control piston are connected by an oil circuit inside the U-shaped meter body, and hydraulic oil is provided in the branch piston and the control piston; the control piston is stretched, and while the pressure inside the control piston is reduced, all three groups of branch pistons are contracted, and then the slide is moved, and the connecting rod is cooperated to pull open each group of meter clamps. At this time, the meter clamp can be buckled on the outside of the cable; then the control piston is released, and the branch piston is automatically reset by the external spring, so the control piston is also naturally reset, and the branch piston reset drives the slide to cooperate with the connecting rod to close the two groups of meter clamps. At this time, the three-phase electricity can be detected, and the gear knob can be adjusted to turn the display meter to the corresponding position. The current difference can be calculated by measuring the three groups of cables at the same time.

[0011] Furthermore, an L-shaped lock buckle is provided at the lower left side of the U-shaped watch body to rotate with the spring rod. The L-shaped lock buckle automatically fits the U-shaped watch body through the spring rod, and the top of the L-shaped lock buckle can be buckled on the top of the U-shaped watch body.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] Setting up three sets of rotating meter rods provides the function of synchronous three-phase detection and comparison. The three sets of rotating meter rods are turned to different angles close to different cables, the control piston is stretched, the three sets of branch pistons are all retracted, the slide is moved, and the connecting rod is used to pull open each set of meter clamps. At this time, the meter clamps can be buckled on the outside of the cable to detect the three-phase electricity. Adjust the gear knob to turn the display meter to the corresponding position. The current difference can be calculated by measuring the three sets of cables at the same time.

[0014] The power-on tube is provided to provide a guiding and threading function, which can provide a sliding guide. The built-in circuit of the meter clamp can also be connected to the circuit board and the display meter through the power-on tube to provide a connection detection effect.

[0015] If all three clamps are attached to the outside of a cable, self-verification can be achieved to see if the indications of each set of display meters are all correct.

[0016] When detecting three-phase current, pull out the L-shaped lock buckle and rotate it to fit the U-shaped meter body, as shown in the figure. At this time, the restriction on the rotation of the meter stem is released; conversely, the L-shaped lock buckle can be used to restrict the rotation of the meter stem, so that the rotating meter stem will not rotate freely when the ammeter is placed, affecting the placement or carrying of the meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the utility model in an expanded state.

[0019] Figure 3This utility model Figure 2 Schematic diagram of the structure from another angle.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the rotating watch rod of the utility model.

[0021] Figure 5 It is a schematic cross-sectional view of the rotating watch stem of the utility model.

[0022] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0023] 1. U-shaped meter body; 101. Display meter; 102. Shift knob; 103. Fixed seat; 104. Control piston; 2. Articulated seat; 3. Rotating meter stem; 301. Electric tube; 302. Branch piston; 303. Sliding seat; 304. Meter clamp; 305. Connecting rod; 4. L-shaped lock. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. Example 1

[0025] As attached Figure 1 To the attached Figure 5 As shown:

[0026] The utility model provides a digital clamp ammeter, comprising a U-shaped meter body 1, wherein three groups of display meters 101 and three groups of gear knobs 102 are installed on the top of the U-shaped meter body 1, and a circuit board and a battery are arranged inside the U-shaped meter body 1; three groups of hinged seats 2 are rotatably arranged at the inner corners of the U-shaped meter body 1, and a rotating meter rod 3 is fixedly arranged on the outside of the hinged seats 2; a fixed seat 103 is fixedly arranged on the right side of the U-shaped meter body 1, and the fixed seat 103 limits the rotation of the rotating meter rod 3 by 0-90 degrees.

[0027] A control piston 104 is fixedly provided on the rear side of the fixing seat 103 , and a short handle for convenient control is fixedly provided on the telescopic end of the control piston 104 .

[0028] Among them, two groups of power tubes 301 are fixedly set inside the rotating meter stem 3, and a slide 303 is set outside the two groups of power tubes 301; meter clamps 304 are rotatably set on both sides of the front end of the rotating meter stem 3, and a connecting rod 305 is hinged between the meter clamp 304 and the two sides of the slide 303.

[0029] A branch piston 302 is fixedly provided on the front inner side of the rotating watch stem 3 , and a spring is provided on the outer sleeve of the telescopic end of the branch piston 302 .

[0030] The branch piston 302 and the control piston 104 are connected by an oil passage inside the U-shaped body 1 , and hydraulic oil is provided in the branch piston 302 and the control piston 104 .

[0031] Among them, an L-shaped lock buckle 4 is provided at the lower left side of the U-shaped watch body 1 to rotate with the spring rod. The L-shaped lock buckle 4 automatically fits the U-shaped watch body 1 through the spring rod, and the top of the L-shaped lock buckle 4 can be buckled on the top of the U-shaped watch body 1.

[0032] like Figure 1-5 As shown, when detecting three-phase current, pull the L-shaped lock buckle 4 outward, rotate the L-shaped lock buckle 4 to fit the U-shaped body 1, as shown in FIG. Figure 2 In the state of , the restriction on the rotating meter rod 3 is released at this time, and the three sets of rotating meter rods 3 can be turned outward and rotated to different angles. Then, the meter clamp 304 is placed close to different cables respectively. At this time, the control piston 104 is directly stretched. When the internal pressure of the control piston 104 is reduced, the three sets of branch pistons 302 are all contracted, and then the slide 303 is moved, and the connecting rod 305 is cooperated to pull apart the groups of meter clamps 304. At this time, the meter clamp 304 can be buckled on the outside of the cable;

[0033] Then release the control piston 104, and the branch piston 302 will automatically reset through the external spring, so the control piston 104 will also reset naturally. The branch piston 302 resets and drives the slide 303 to cooperate with the connecting rod 305 to close the two sets of meter clamps 304. At this time, the three-phase electricity can be tested. Adjust the gear knob 102 to turn the display meter 101 to the corresponding position. At the same time, measure the three sets of cables to calculate the current difference. Example 2

[0034] On the basis of Example 1, a single or two groups of cables are tested simultaneously. If all three-layer meter clamps 304 are buckled on the outside of one cable, self-verification can be achieved to see whether the indications of each group of display meters 101 are all accurate.

[0035] The specific usage and function of this embodiment are as follows:

[0036] In the present utility model, when in use, multiple modes of detection can be selected;

[0037] When detecting three-phase current, pull out the L-shaped lock buckle 4 and rotate it to fit the U-shaped meter body 1. Figure 2 In the state of , the restriction on the rotating meter rod 3 is released at this time, and the three sets of rotating meter rods 3 can be turned outward and rotated to different angles. Then, they can be close to different cables respectively. At this time, the control piston 104 is directly stretched. When the internal pressure of the control piston 104 is reduced, the three sets of branch pistons 302 are all contracted, and then the slide 303 is moved, and the connecting rod 305 is cooperated to open the groups of meter clamps 304. At this time, the meter clamps 304 can be buckled on the outside of the cable;

[0038] Then release the control piston 104, and the branch piston 302 will automatically reset due to the external spring, so the control piston 104 will also reset naturally. The branch piston 302 resets and drives the slide 303 to cooperate with the connecting rod 305 to close the two sets of meter clamps 304. At this time, the three-phase electricity can be tested. Adjust the gear knob 102 to turn the display meter 101 to the corresponding position. The current difference of the three sets of cables can be calculated by measuring at the same time.

[0039] It is also possible to test a single or two groups of cables simultaneously. If all three clamps 304 are attached to the outside of one cable, self-verification can be achieved to see if the indications of each group of display meters 101 are all correct.

Claims

1. A digital clamp ammeter, comprising: A U-shaped watch body (1) is provided, wherein three sets of display meters (101) and three sets of gear knobs (102) are installed on the top of the U-shaped watch body (1), and a circuit board and a battery are provided inside the U-shaped watch body (1); the U-shaped watch body (1) is characterized in that three sets of hinged seats (2) are rotatably provided at the inner corners of the U-shaped watch body (1), and a rotating watch rod (3) is fixedly provided on the outside of each hinged seat (2); a fixed seat (103) is fixedly provided on the right side of the U-shaped watch body (1), and the fixed seat (103) limits the rotating watch rod (3) from rotating 0 to 90 degrees.

2. A digital clamp ammeter as claimed in claim 1, characterized in that: A control piston (104) is fixedly provided on the rear side of the fixing seat (103), and a short handle for convenient control is fixedly provided on the telescopic end of the control piston (104).

3. A digital clamp ammeter as claimed in claim 1, characterized in that: Two groups of power tubes (301) are fixedly arranged inside the rotating meter rod (3), and a slide seat (303) is also arranged outside the two groups of power tubes (301); meter clamps (304) are rotatably arranged on both sides of the front end of the rotating meter rod (3), and connecting rods (305) are hingedly arranged between the meter clamps (304) and both sides of the slide seat (303).

4. A digital clamp ammeter as claimed in claim 1, characterized in that: A branch piston (302) is fixedly provided on the inner front side of the rotating meter rod (3), and a spring is provided on the outer sleeve of the telescopic end of the branch piston (302).

5. A digital clamp ammeter as claimed in claim 4, characterized in that: The branch piston (302) and the control piston (104) are connected by an oil passage arranged inside the U-shaped body (1), and hydraulic oil is arranged in the branch piston (302) and the control piston (104).

6. A digital clamp ammeter as claimed in claim 1, characterized in that: An L-shaped lock buckle (4) is provided at the lower left of the U-shaped watch body (1) in cooperation with a spring rod for rotation. The L-shaped lock buckle (4) automatically fits the U-shaped watch body (1) through the spring rod, and the top of the L-shaped lock buckle (4) can be buckled on the top of the U-shaped watch body (1).

Images