Multifunctional clamp meter device

Abstract

The invention relates to the field of electrical variable measurement, in particular to a multifunctional clamp meter device, which comprises a meter body, a detection clamp arranged on the meter body and a protection unit arranged on the detection clamp, and is characterized in that a sliding sleeve is used for carrying out over-extension protection on a jaw when a movable clamp and a fixed clamp are opened, so that the device is prevented from being collided when extending out of a to-be-detected cable; meanwhile, under the condition that the movable clamp and the fixed clamp are opened, the butt joint end face of the movable clamp and the fixed clamp is covered through cooperation of a first magnetic pole and a second magnetic pole in cooperation with a covering plate, dust, sewage and other impurities are prevented from polluting the butt joint end face of the movable clamp and the fixed clamp, the butt joint position of the movable clamp and the fixed clamp is protected, and the service life of the device is prolonged; and the influence on the detection result of the device is prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric variable measurement, in particular to a multifunctional clamp-on meter device. BACKGROUND

[0002] The clamp-on meter realizes non-contact current measurement through electromagnetic induction or Hall principle, and the measurement accuracy thereof depends on the complete closure of the jaw core and the cleanliness of the contact surface to a great extent. In order to accurately measure data, the clamp-on meter needs to be kept clean and closed well during use. The existing clamp-on meter has two pairs of end surfaces exposed to the outside in the open state, and cement slurry, metal dust, oil and water on the construction site are easily attached to the end surfaces. Once the impurities are clamped into the closed seam, the magnetic circuit air gap is easily increased, the effective magnetic permeability is decreased, the current reading is low, the impurity particles scratch the core plating, and the corrosion is intensified after long-term use, and the closure accuracy is irreversibly deteriorated. SUMMARY

[0003] In view of the above or the existing problems in the prior art that the existing clamp-on meter has two pairs of end surfaces exposed to the outside in the open state, and cement slurry, metal dust, oil and water on the construction site are easily attached to the end surfaces, once the impurities are clamped into the closed seam, the magnetic circuit air gap is easily increased, the effective magnetic permeability is decreased, the current reading is low, the impurity particles scratch the core plating, and the corrosion is intensified after long-term use, and the closure accuracy is irreversibly deteriorated, the present application is proposed.

[0004] Therefore, the purpose of the present application is to provide a multifunctional clamp-on meter device.

[0005] To solve the above technical problems, the present application provides the following technical scheme: a clamp-on meter device includes a meter body, a detection clamp arranged on the meter body, and a protection unit arranged on the detection clamp; the protection unit includes a protection assembly one and a protection assembly two arranged on the detection clamp; the protection assembly one and the protection assembly two are used to cover and protect the jaw when the detection clamp is opened, and the protection unit is driven by the detection clamp to loosen the cover of the jaw when the detection clamp is closed.

[0006] As a preferred scheme of the multifunctional clamp-on meter device, the detection clamp includes a movable clamp arranged on the meter body, a fixed clamp arranged on the meter body, and a pressing assembly arranged on the movable clamp.

[0007] As a preferred scheme of the multifunctional clamp-on meter device, the pressing assembly includes a pressing block arranged on the movable clamp, a rotating groove and a sliding groove matched with the pressing block arranged on the meter body, a guide sliding rod having one end fixedly arranged on the sliding groove and being in sliding connection with the pressing block, and a spring one having two ends fixedly connected with the sliding groove and the pressing block, respectively.

[0008] As a preferred scheme of the multifunctional caliper type meter device, the protection assembly one comprises a sliding sleeve arranged on the movable caliper, a fixed block arranged on the movable caliper, and a cover arranged on the sliding sleeve; the protection assembly two has the same structure as the protection assembly one.

[0009] As a preferred scheme of the multifunctional caliper type meter device, the sliding sleeve is provided with a sliding opening matched with the movable caliper.

[0010] As a preferred scheme of the multifunctional caliper type meter device, a spring two is arranged between the sliding sleeve and the fixed block, and a gap between the sliding sleeve and the fixed block is arranged as an expansion cavity.

[0011] As a preferred scheme of the multifunctional caliper type meter device, the sliding sleeve is further provided with a limiting sliding groove, and the fixed block is provided with a limiting sliding block matched with the limiting sliding groove.

[0012] As a preferred scheme of the multifunctional caliper type meter device, the cover comprises cover plates arranged on both sides of the inner wall of the sliding opening, a rotating shaft arranged on the cover plates, and a movable groove arranged on the inner wall of the sliding opening and matched with the rotation of the cover plates.

[0013] As a preferred scheme of the multifunctional caliper type meter device, the cover plates are provided with a magnetic pole one, the sliding opening is provided with a magnetic pole two matched with the magnetic pole one, and the magnetic pole one and the magnetic pole two have the same polarity.

[0014] As a preferred scheme of the multifunctional caliper type meter device, in the released state of the spring two, the end of the sliding sleeve exceeds the end of the movable caliper, and in this state, the magnetic pole one is adsorbed on the end face of the movable caliper.

[0015] The multifunctional caliper type meter device has the following advantages: the sliding sleeve is used to protect the caliper opening of the movable caliper and the fixed caliper when they are opened, preventing the device from being bumped when it extends to the cable to be detected; meanwhile, the cover plates are used to cover the end faces of the movable caliper and the fixed caliper in the opened state of the movable caliper and the fixed caliper, through the cooperation of the magnetic pole one and the magnetic pole two, to prevent impurities such as dust and sewage from polluting the end faces of the movable caliper and the fixed caliper, thereby protecting the joint of the movable caliper and the fixed caliper, prolonging the service life of the device, and preventing the detection results of the device from being affected; meanwhile, the device has a simple structure, when the movable caliper and the fixed caliper are closed, the closing action of the movable caliper and the fixed caliper extrudes the cover plates, so that the cover plates are opened, realizing the closed joint of the movable caliper and the fixed caliper; the protection action of the movable caliper and the fixed caliper is cooperated with the opening and closing process of the movable caliper and the fixed caliper, without additional energy consumption and manual intervention, and the device is stable and durable. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0017] Figure 1 It is a schematic diagram of the overall structure of the multifunctional clamp type meter device.

[0018] Figure 2 It is a schematic diagram of the structure of the pressing assembly of the multifunctional clamp type meter device.

[0019] Figure 3 It is a schematic diagram of the structure of the sliding sleeve of the multifunctional clamp type meter device.

[0020] Figure 4 It is a schematic diagram of the structure of the fixed block of the multifunctional clamp type meter device.

[0021] Figure 5 It is a schematic diagram of the structure of the spring two of the multifunctional clamp type meter device.

[0022] Figure 6 It is a schematic diagram of the structure of the sliding port of the multifunctional clamp type meter device.

[0023] Figure 7 It is a schematic diagram of the cross-sectional structure of the sliding port of the multifunctional clamp type meter device.

[0024] Figure 8 It is a schematic diagram of the structure of the magnetic pole two of the multifunctional clamp type meter device.

[0025] In the figure: 1, meter body; 11, rotating groove; 12, sliding groove; 2, detection clamp; 21, movable clamp; 22, fixed clamp; 23, pressing assembly; 231, pressing block; 232, guide sliding rod; 233, spring one; 3, protection unit; 31, protection assembly one; 32, protection assembly two; 311, sliding sleeve; 3111, sliding port; 3112, limiting sliding groove; 312, fixed block; 3121, limiting sliding block; 313, cover piece; 3131, cover plate; 3132, rotating shaft; 3133, movable groove; 3134, magnetic pole one; 3135, magnetic pole two; 314, spring two; 315, telescopic cavity. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0027] Embodiment 1, refer to Figure 1 and Figure 2For the first embodiment of the application, the embodiment provides a multifunctional clamp-on meter device, which comprises a meter body 1, a main body for the device, a display screen and a control knob are arranged on the meter body 1, which are used for detecting various data of the cable, a detection clamp 2 arranged on the meter body 1, which is used for clamping the cable to be detected, when the detection clamp 2 clamps the current-carrying cable, at this time the detection clamp 2 becomes a primary coil, at this time the alternating current generates an alternating magnetic field around the cable, the magnetic field is concentrated by the magnetic core on the detection clamp 2 and passes through the secondary coil of the clamp-on meter, through the mutual inductance between the measured current and the secondary coil, the corresponding current and voltage size are detected, and a protection unit 3 arranged on the detection clamp 2 is used for protecting the butt joint of the detection clamp 2 when the detection clamp 2 is opened, preventing impurities such as dust and sewage from polluting and wearing the connecting end face of the detection clamp 2; The protection unit 3 comprises a protection assembly one 31 and a protection assembly two 32 arranged on the detection clamp 2, and the protection assembly one 31 and the protection assembly two 32 are respectively used for protecting the butt joint end face of the detection clamp 2 in cooperation with the opening and closing of the detection clamp 2; The protection assembly one 31 and the protection assembly two 32 cover and protect the clamp opening of the detection clamp 2 when the detection clamp 2 is opened, and the protection unit 3 is driven by the activity of the detection clamp 2 when the detection clamp 2 is closed to loosen the cover of the clamp opening of the detection clamp 2.

[0028] In summary, first, the technician holds the meter body 1, in this state, the detection clamp 2 is in the engaged state, when the technician presses the detection clamp 2 to open the detection clamp 2, at this time the protection unit 3 quickly extends from the port of the opened detection clamp 2 to protect the exposed end face of the opened detection clamp 2, and at the same time covers the end face to prevent impurities such as dust and sewage from polluting the butt joint end face of the detection clamp 2 during the process of opening the detection clamp 2 to clamp the cable.

[0029] Embodiment 2, refer to Figures 1-3 For the second embodiment of the application, which is different from the previous embodiment: the specific structure of the detection clamp 2 in the multifunctional clamp-on meter device is provided. Compared with embodiment 1, further, the detection clamp 2 comprises a movable clamp 21 arranged on the meter body 1, which is used for sliding on the meter body 1, a fixed clamp 22 arranged on the meter body 1, which is fixed on the meter body 1, cooperates with the meter body 1 and the movable clamp 21 to form a ring-shaped detection area, cooperates with the sliding of the movable clamp 21 to realize the opening or closing between the movable clamp 21 and the fixed clamp 22, and a pressing assembly 23 arranged on the movable clamp 21, which is used for driving the movable clamp 21 to slide on the meter body 1 and controlling the opening and closing state between the movable clamp 21 and the fixed clamp 22.

[0030] The pressing assembly 23 comprises a pressing block 231 arranged on the movable clamp 21, which is used for hand pressing and applying force to one end of the movable clamp 21 to drive the movable clamp 21 to move. The table body 1 is provided with a rotating groove 11 and a sliding groove 12 matched with the pressing block 231. The rotating groove 11 is used for accommodating the movement track of the pressing block 231 when the pressing block 231 is pressed and moved. The sliding groove 12 is used for receiving the movable clamp 21 which is pressed and moved. A guide sliding rod 232 is fixedly arranged at one end of the sliding groove 12 and is in sliding connection with the pressing block 231, which is used for limiting and guiding the movement track of the movable clamp 21, so that the sliding of the movable clamp 21 is more stable. A spring one 233 is fixedly connected at two ends of the sliding groove 12 and the pressing block 231, which is used for restoring the movable clamp 21 to the original position after pressing. In the non-detection state, the spring one 233 drives the movable clamp 21 to close with the fixed clamp 22.

[0031] The remaining structures are the same as those in Embodiment 1.

[0032] When it is necessary to detect the target cable, the driving device is driven to move close to the cable to be detected. At this time, the pressing block 231 is pressed to drive the movable clamp 21 to move into the sliding groove 12 through the guide sliding rod 232. At this time, the pressing block 231 is squeezed and shrunk into the rotating groove 11. At this time, the spring one 233 is compressed. At this time, the interface between the movable clamp 21 and the fixed clamp 22 is opened. At this time, the protection assembly one 31 and the protection assembly two 32 protect the exposed ports of the movable clamp 21 and the fixed clamp 22, respectively. At this time, the cable to be detected is clamped into the detection area between the movable clamp 21 and the fixed clamp 22 through the gap between the movable clamp 21 and the fixed clamp 22. At this time, the pressing block 231 is released. At this time, the elastic force generated when the spring one 233 is released drives the movable clamp 21 to slide back and engage with the fixed clamp 22. The force generated when the fixed clamp 22 moves and the reaction force generated when the fixed clamp 22 moves relative to the movable clamp 21 respectively push away the protection assembly one 31 and the protection assembly two 32, so that the end faces of the movable clamp 21 and the fixed clamp 22 are re-engaged to form a closed loop around the cable to be detected. At this time, the detection device detects the clamped cable.

[0033] Embodiment 3, refer to Figures 1-8 The second embodiment of the present application is different from the previous embodiment in that the specific structure of the protection unit 3 in the multifunctional clamp-shaped table device is provided. Compared with Embodiment 2, further, the protection assembly one 31 comprises a sliding sleeve 311 arranged on the movable clamp 21, which is used for sliding on the movable clamp 21 to protect the port of the movable clamp 21. A fixed block 312 is arranged on the movable clamp 21, which is used for fixing. A cover 313 is arranged on the sliding sleeve 311, which is used for sliding with the sliding sleeve 311 to cover and protect the port of the movable clamp 21. The protection assembly two 32 is identical in structure to the protection assembly one 31, and is used for protecting the port of the fixed clamp 22.

[0034] The sliding sleeve 311 is provided with a sliding opening 3111 matched with the movable clamp 21, so that the sliding sleeve 311 slides back and forth at the port of the movable clamp 21.

[0035] The spring two 314 is arranged between the sliding sleeve 311 and the fixed block 312, so as to support and reset the sliding sleeve 311.

[0036] The sliding sleeve 311 is further provided with a limiting sliding groove 3112, and the fixed block 312 is provided with a limiting sliding block 3121 matched with the limiting sliding groove 3112.

[0037] The cover 313 includes cover plates 3131 arranged on both sides of the inner wall of the sliding opening 3111, used for covering and protecting the port surface of the movable clamp 21, pivots 3132 arranged on the cover plates 3131, used for supporting the cover plates 3131 and serving as the axes of the cover plates 3131, and movable grooves 3133 arranged on the inner wall of the sliding opening 3111 and matched with the pivots 3132, used for accommodating the cover plates 3131.

[0038] The cover plates 3131 are provided with magnetic poles one 3134, and the sliding opening 3111 is provided with magnetic poles two 3135 matched with the magnetic poles one 3134.

[0039] The spring two 314 is in a released state, the end of the sliding sleeve 311 exceeds the end of the movable clamp 21, and the magnetic poles one 3134 are adsorbed on the end surface of the movable clamp 21 in this state.

[0040] The rest of the structure is the same as that of example 2.

[0041] In summary, when the movable clamp 21 and the fixed clamp 22 are in a closed state, the movable clamp 21 and the fixed clamp 22 are tightly engaged under the action of the spring 233 at this time, the sliding sleeve 311 and the protection assembly two 32 cooperate with the movable clamp 21 and the fixed clamp 22 to tightly abut at this time, the spring two 314 is in a compressed state at this time, the cover plate 3131 contacts the side surface of the movable clamp 21 at this time, the magnetic pole one 3134 and the magnetic pole two 3135 are close to each other, when the pressing block 231 is pressed to drive the movable clamp 21 and the fixed clamp 22 to open, the movable clamp 21 and the fixed clamp 22 begin to separate at this time, the fixed block 312 cooperates with the movable clamp 21 to move synchronously at this time, the spring two 314 nut and the fixed block 312 slowly release the movement at this time, the sliding sleeve 311 and the protection assembly two 32 are still in the abutting state, but the interaction force between the sliding sleeve 311 and the protection assembly two 32 gradually decreases, at the same time, in the process of opening the movable clamp 21 and the fixed clamp 22, the movable clamp 21 and the fixed clamp 22 slide relative to the sliding sleeve 311 and the protection assembly two 32 at this time, the movable clamp 21 slides relative to the cover plate 3131 at this time, until the end of the movable clamp 21 is below the position of the rotating shaft 3132, at this time, the magnetic pole one 3134 and the magnetic pole two 3135 generate an acting force between them, drive the cover plate 3131 to overturn, so that the cover plate 3131 is adsorbed on the end surface of the movable clamp 21 through the magnetic pole one 3134, and the end surface of the movable clamp 21 is protected, at this time, the protection assembly two 32 has the same movement process as the fixed clamp 22, until the interaction force between the sliding sleeve 311 and the protection assembly two 32 decreases to zero, at this time, the sliding sleeve 311 and the protection assembly two 32 begin to separate, at this time, the cable to be detected can be clamped through the opening between the movable clamp 21 and the fixed clamp 22, at this time, the pressing block 231 is released, at this time, the spring one 233 releases, drives the movable clamp 21 to slide back, at this time, the sliding sleeve 311 is driven by the spring two 314 to move synchronously, at this time, the sliding sleeve 311 and the protection assembly two 32 begin to contact, at this time, with the continuous movement of the movable clamp 21, the spring two 314 is pressed, at this time, the abutting force between the sliding sleeve 311 and the protection assembly two 32 begins to increase, until the acting force when the spring one 233 releases exceeds the acting force generated when the spring two 314 is compressed, at this time, the movable clamp 21 pushes open the cover plate 3131, at this time, the cover plate 3131 overturns in the movable groove 3133 through the rotating shaft 3132, at this time, the end surface of the movable clamp 21 passes through the cover plate 3131, at this time, the protection assembly two 32 has the same action on the fixed clamp 22, until the end surfaces of the movable clamp 21 and the fixed clamp 22 abut, to embrace the cable to be detected, at this time, the device can be started to detect the cable.

[0042] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced, without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A multi-functional clamp meter device, characterized in that: It includes a meter body (1), a detection clamp (2) disposed on the meter body (1), and a protection unit (3) disposed on the detection clamp (2); The protection unit (3) includes a first protection component (31) and a second protection component (32) disposed on the detection clamp (2); The jaws of the detection clamp (2) are covered and protected by the first protection component (31) and the second protection component (32) when the clamp (2) is open. When the detection clamp (2) is closed, its own movement causes the protection unit (3) to loosen the cover on the jaws of the detection clamp (2).

2. The multi-functional clamp meter device as described in claim 1, characterized in that: The testing clamp (2) includes a movable clamp (21) disposed on the meter body (1), a fixed clamp (22) disposed on the meter body (1), and a pressing component (23) disposed on the movable clamp (21).

3. The multi-functional clamp meter device as described in claim 2, characterized in that: The pressing assembly (23) includes a pressing block (231) disposed on the movable clamp (21), a rotating groove (11) and a sliding groove (12) that cooperate with the pressing block (231) are provided on the body (1), a guide slide rod (232) that is fixedly disposed on the sliding groove (12) and slidably connected to the pressing block (231) at one end, and a spring (233) that is fixedly connected to the sliding groove (12) and the pressing block (231) at both ends respectively.

4. The multi-functional clamp meter device as described in claim 3, characterized in that: The first protective component (31) includes a sliding sleeve (311) disposed on the movable clamp (21), a fixing block (312) disposed on the movable clamp (21), and a cover (313) disposed on the sliding sleeve (311). Protection component 2 (32) has the same structure as protection component 1 (31).

5. The multi-functional clamp meter device as described in claim 4, characterized in that: The sliding sleeve (311) is provided with a sliding port (3111) that cooperates with the movable clamp (21).

6. The multi-functional clamp meter device as described in claim 5, characterized in that: A second spring (314) is provided between the sliding sleeve (311) and the fixed block (312), and the gap between the sliding sleeve (311) and the fixed block (312) is provided as a telescopic cavity (315).

7. The multi-functional clamp meter device as described in claim 6, characterized in that: The sliding sleeve (311) is also provided with a limiting groove (3112), and the fixed block (312) is provided with a limiting slider (3121) that cooperates with the limiting groove (3112).

8. The multi-functional clamp meter device as described in claim 7, characterized in that: The cover (313) includes a cover plate (3131) disposed on both sides of the inner wall of the sliding opening (3111), a rotating shaft (3132) disposed on the cover plate (3131), and a movable groove (3133) disposed on the inner wall of the sliding opening (3111) to cooperate with the cover plate (3131) to rotate.

9. The multi-functional clamp meter device as described in claim 8, characterized in that: A magnetic pole one (3134) is provided on the cover plate (3131), and a magnetic pole two (3135) that matches the magnetic pole one (3134) is provided on the sliding port (3111). The magnetic pole one (3134) and the magnetic pole two (3135) have the same polarity.

10. The multi-functional clamp meter device as described in claim 9, characterized in that: When the second spring (314) is in the released state, the end of the sliding sleeve (311) extends beyond the end of the movable clamp (21), and in this state, the first magnetic pole (3134) is attracted to the end face of the movable clamp (21).

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