Phase-to-ground short circuit protection device convenient to fix and fast to ground

Abstract

The utility model discloses a phase-to-ground short circuit protection device convenient to fix and fast to ground, which comprises a main body module, the main body module is placed in an outer shell, and the outer shell comprises an upper cover plate, a side protective cover and a bottom plate; fixing clamping grooves are formed in the front side and the rear side of the side protective cover, fixing assemblies are arranged in the fixing clamping grooves, a sliding groove is formed in the side face of the side protective cover, a baffle located at the bottom of the side protective cover is installed at the bottom of the sliding groove, a rapid grounding assembly located in the sliding groove is installed above the baffle, and the rapid grounding assembly and the grounding connecting plate are arranged in an up-down corresponding mode; a first slot and a second slot are formed in the bottom plate, the first slot corresponds to a wiring board located at the bottom of the main body module, and the second slot corresponds to the quick grounding assembly. The phase-to-ground short-circuit protection device convenient to fix and fast to ground is adopted, the installation stability of the device can be improved, the device can be suitable for various special detection environments, and the completion efficiency of the grounding operation of the device can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power meters, in particular to a phase-to-earth short-circuit protection device which is convenient to fix and quickly ground. Background Art

[0002] A short circuit means that a circuit or a part of a circuit is short-circuited. For example, when the load and both ends of the power supply are connected by a wire, it is called a short circuit. When a short circuit occurs, the current provided by the power supply will be much larger than the current provided in the normal circuit. A short-circuit monitoring device is a device that detects a circuit to understand whether the circuit is short-circuited, and is widely used in the circuit.

[0003] However, when the short-circuit detector on the market at present detects a circuit, when it is necessary to detect the circuit in a special area, it is generally not convenient to fix the short-circuit detector, so that the use conditions of the short-circuit detector are relatively limited. In addition, when it is necessary to temporarily detect a circuit, it is not convenient to quickly ground the short-circuit detector, which is a waste of time, so that the detection efficiency of the short-circuit detector for circuits at different positions is relatively low. Summary of the Invention

[0004] The purpose of the utility model is to provide a phase-to-earth short-circuit protection device which is convenient to fix and quickly ground, can improve the installation stability of the device, can be applied to a variety of special detection environments, and can also effectively improve the completion efficiency of the grounding operation of the device.

[0005] To achieve the above purpose, the utility model provides a phase-to-earth short-circuit protection device which is convenient to fix and quickly ground, including a main body module, the main body module is placed in a housing, the housing includes an upper cover plate located above, a side protection cover located in the middle and a bottom plate located at the bottom; fixed card slots are opened on both the front and rear sides of the side protection cover, fixing components are arranged in the fixed card slots, a sliding groove is opened on the side surface of the side protection cover, a baffle located at the bottom of the side protection cover is installed at the bottom of the sliding groove, a quick grounding component located in the sliding groove is installed above the baffle, and the quick grounding component is arranged corresponding to the grounding connection plate at the bottom of the main body module up and down; a first slot and a second slot are opened on the bottom plate, the first slot corresponds to the wiring board at the bottom of the main body module, and the second slot corresponds to the quick grounding component.

[0006] Preferably, the upper cover plate is movably connected to the top of the side protection cover through fixing screws, the bottom plate is movably connected to the bottom of the side protection cover through fixing screws, and the baffle is movably installed at the bottom of the sliding groove through fixing screws.

[0007] Preferably, at least a pair of fixing rings are installed on the side surface of the side protection cover.

[0008] Preferably, the fixing component is movably fixed in the fixing card slot through fixing screws, and a plurality of limiting holes arranged vertically and corresponding to the fixing screws are arranged in the fixing card slot.

[0009] Preferably, a display screen, an indicator light and control buttons are arranged on the upper cover plate, and the display screen, the indicator light and the control buttons are all electrically connected to the main body module.

[0010] Preferably, the quick grounding component includes a sliding rod located in the sliding groove, and a hand lever located outside the sliding groove is connected to the side of the sliding rod; a stress spring is arranged at the bottom of the sliding rod, and a Z-shaped clamping plate is fixedly connected to the inner side of the sliding rod, and the bottom of the Z-shaped clamping plate is located below the grounding connecting plate.

[0011] Preferably, a fixing screw is arranged at the bottom of the Z-shaped clamping plate, and a corresponding threaded hole is arranged on the grounding connecting plate.

[0012] Therefore, by adopting the above-mentioned phase-to-earth short-circuit protection device which is convenient for fixing and quick grounding, the installation stability of the device can be improved, it can be applied to a variety of special detection environments, and the completion efficiency of the device grounding operation can also be effectively improved.

[0013] The technical solution of the present invention will be further described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0014] Figure 1 is a three-dimensional structural schematic diagram of an embodiment of a phase-to-earth short-circuit protection device which is convenient for fixing and quick grounding of the present invention;

[0015] Figure 2 is an internal structural schematic diagram of an embodiment of a phase-to-earth short-circuit protection device which is convenient for fixing and quick grounding of the present invention;

[0016] Figure 3 is a partial structural schematic diagram of a quick grounding component of an embodiment of a phase-to-earth short-circuit protection device which is convenient for fixing and quick grounding of the present invention;

[0017] Figure 4 is a bottom structural schematic diagram of an embodiment of a phase-to-earth short-circuit protection device which is convenient for fixing and quick grounding of the present invention.

[0018] Reference Signs

[0019] 1. Upper cover plate; 11. Display screen; 12. Indicator light; 13. Control button; 2. Side protective cover; 21. Fixed card slot; 22. Fixed component; 23. Limit hole; 24. Fixed ring; 25. Slide groove; 26. Baffle; 27. Quick grounding component; 271. Slide bar; 272. Hand lever; 273. Stress spring; 274. Z-shaped card board; 3. Bottom plate; 31. First slot; 32. Second slot; 4. Fixed screw; 5. Main body module; 51. Wiring board; 52. Ground connection board. Detailed implementation manners

[0020] The technical solutions of the present utility model will be further described below with reference to the accompanying drawings and embodiments.

[0021] Unless otherwise defined, the technical terms or scientific terms used in the present utility model shall have the ordinary meanings understood by those of ordinary skill in the field to which the present utility model belongs. The "first", "second" and similar terms used in the present utility model do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute positions of the objects being described change, the relative positional relationships may also change accordingly.

[0022] Embodiment 1

[0023] As Figure 1 shown, the present utility model provides a phase-ground short-circuit protection device that is convenient for fixing and quickly grounding, including a main body module 5 for detecting the short-circuit condition of the circuit. The main body module 5 is placed in the housing, and the housing protects the main body module 5.

[0024] The housing includes an upper cover plate 1 located above, a side protective cover 2 located in the middle, and a bottom plate 3 located at the bottom. The upper cover plate 1 is movably connected to the top of the side protective cover 2 through a fixed screw 4, and the bottom plate 3 is movably connected to the bottom of the side protective cover 2 through a fixed screw 4. The upper cover plate 1 is provided with a display screen 11, an indicator light 12 and a control button 13, and the display screen 11, the indicator light 12 and the control button 13 are all electrically connected to the main body module 5, which is convenient for human-machine interaction with the phase-ground short-circuit protection device.

[0025] Fixed card slots 21 are provided on both the front and rear sides of the side protective cover 2, and a fixed component 22 is arranged in the fixed card slots 21 for connecting and fixing the housing to other devices.

[0026] In this embodiment, the fixing component 22 is slidably arranged in the fixing slot 21. The fixing component 22 is movably fixed in the fixing slot 21 by fixing screws 4. A number of limiting holes 23 arranged vertically and corresponding to the fixing screws 4 are provided in the fixing slot 21. By adjusting the installation position of the fixing component 22 up and down, the phase-to-ground short-circuit protection device can be applied to a variety of different installation environments.

[0027] In this embodiment, fixing rings 24 are installed at the four edges of the side of the side protective cover 2, with a total of four installed. When the actual installation environment is not very suitable for fixing by the fixing component 22. The phase-to-ground short-circuit protection device can be fixed through the cooperation of the fixing rings 24 and the binding straps. According to the environmental conditions, two fixing rings 24 can be selected as a group and a binding strap can be used for fixing, or the binding strap can be used to assist in fixing the fixing component 22, which is beneficial to improving the installation stability of the phase-to-ground short-circuit protection device.

[0028] A chute 25 is formed on the side of the side protective cover 2. A baffle 26 located at the bottom of the side protective cover 2 is installed at the bottom of the chute 25. The baffle 26 is movably installed at the bottom of the chute 25 by fixing screws 4, so that the bottom of the baffle 26 is flush with the bottom of the side protective cover 2, facilitating the installation of the bottom plate 3. A quick grounding component 27 located in the chute 25 is installed above the baffle 26. Due to the presence of the baffle 26, the position of the quick grounding component 27 can be limited.

[0029] As Figure 2 shown, the quick grounding component 27 and the grounding connection plate 52 located at the bottom of the main body module 5 are arranged corresponding to each other up and down. As Figure 3 shown, the quick grounding component 27 includes a slide rod 271 located in the chute 25. The slide rod 271 can slide up and down in the chute 25. A hand-operated lever 272 located outside the chute 25 is connected to the side of the slide rod 271, which is used for an operator to adjust the position of the slide rod 271. A stress spring 273 is arranged at the bottom of the slide rod 271. The stress spring 273 is located between the slide rod 271 and the baffle 26. An upward thrust can be continuously provided to the slide rod 271 through the stress spring 273. A Z-shaped clamping plate 274 is fixedly connected to the inner side of the slide rod 271. The bottom of the Z-shaped clamping plate 274 is located below the grounding connection plate 52. Under the action of the stress spring 273, when there is no other external force on the hand-operated lever 272, the Z-shaped clamping plate 274 can always press tightly against the grounding connection plate 52. In order to further improve the stability of the Z-shaped clamping plate 274 closely adhering to the grounding connection plate 52, in this embodiment, fixing screws 4 are arranged at the bottom of the Z-shaped clamping plate 274, and corresponding threaded holes are arranged on the grounding connection plate 52. The Z-shaped clamping plate 274 can be fixed on the grounding connection plate 52 through the fixing screws 4, making the wire grounding more stable.

[0030] AsFigure 4 As shown, a first slot 31 and a second slot 32 are formed in the bottom plate 3. The first slot 31 corresponds to the wiring board 51 located at the bottom of the main body module 5, so that the wiring ports of the wiring board 51 can be located outside the bottom plate 3, facilitating wiring. The second slot 32 corresponds to the quick grounding assembly 27, which can ensure that the quick grounding assembly 27 has sufficient movement space, facilitating the placement of the grounding wire between the Z-shaped clamping plate 274 and the grounding connection plate 52. When temporary grounding is required, the operator only needs to move the manual lever 272 to push the Z-shaped clamping plate 274 downward, and then place the grounding wire between the Z-shaped clamping plate 274 and the grounding connection plate 52. When the operator releases the manual lever 272, the Z-shaped clamping plate 274 can drive the grounding wire to be pressed against the grounding connection plate 52 under the action of the stress spring 273, realizing quick grounding operation. When long-term stable grounding is required, the fixing screw 4 can be used to fix the fixing screw 4 on the grounding connection plate 52. The whole operation is convenient and fast.

[0031] Therefore, the phase-to-earth short-circuit protection device of the present utility model, which is convenient for fixing and quick grounding, can improve the installation stability of the device, can be applicable to a variety of special detection environments, and can also effectively improve the completion efficiency of the device grounding operation.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify or equivalently replace the technical solutions of the present utility model, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present utility model.

Claims

1. A phase-to-earth short-circuit protection device that is convenient for fixing and quickly grounding, characterized in that: It includes a main body module which is placed inside a housing. The housing includes an upper cover plate located above, side protective covers located in the middle, and a bottom plate located at the bottom; fixed card slots are provided on both the front and rear sides of the side protective covers, fixing components are arranged in the fixed card slots, a sliding groove is provided on the side surface of the side protective covers, a baffle located at the bottom of the side protective cover is installed at the bottom of the sliding groove, a quick grounding component located in the sliding groove is installed above the baffle, and the quick grounding component is arranged corresponding to the grounding connection plate located at the bottom of the main body module up and down; first and second slots are provided on the bottom plate, the first slot corresponds to the wiring board located at the bottom of the main body module, and the second slot corresponds to the quick grounding component.

2. The phase-to-earth short-circuit protection device according to claim 1, which is convenient for fixing and quickly grounding, is characterized in that: The upper cover plate is movably connected to the top of the side protective cover by fixing screws, the bottom plate is movably connected to the bottom of the side protective cover by fixing screws, and the baffle is movably installed at the bottom of the sliding groove by fixing screws.

3. The phase-ground short-circuit protection device that is convenient for fixing and quickly grounding according to claim 1, wherein: At least a pair of fixing rings are installed on the side surface of the side protective cover.

4. The phase-earth short-circuit protection device that is convenient for fixing and quickly grounding according to claim 1, wherein: The fixing component is movably fixed in the fixed card slot by fixing screws, and a number of limiting holes arranged up and down and corresponding to the fixing screws are provided in the fixed card slot.

5. The phase-ground short-circuit protection device according to claim 1, which is convenient for fixing and quickly grounding, is characterized in that: A display screen, indicator lights and control buttons are provided on the upper cover plate, and the display screen, indicator lights and control buttons are all electrically connected to the main body module.

6. The phase-ground short-circuit protection device according to claim 1, which is convenient for fixing and quickly grounding, is characterized in that: The quick grounding component includes a sliding rod located in the sliding groove, and a hand-operated rod located outside the sliding groove is connected to the side surface of the sliding rod; a stress spring is arranged at the bottom of the sliding rod, a Z-shaped clamping plate is fixedly connected to the inner side of the sliding rod, and the bottom of the Z-shaped clamping plate is located below the grounding connection plate.

7. The phase-to-ground short-circuit protection device according to claim 6, which is convenient for fixing and quickly grounding, is characterized in that: A fixing screw is arranged at the bottom of the Z-shaped clamping plate, and corresponding threaded holes are provided on the grounding connection plate.

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