CN212623000U

CN212623000U - Short circuit detection device with protection structure for fault diagnosis of looped network power distribution cabinet

Info

Publication number: CN212623000U
Application number: CN202021767564.5U
Authority: CN
Inventors: 陈奕傧; 郭世杰; 陈咏诗
Original assignee: Atmex Intelligent Electric Co ltd
Current assignee: Atmex Intelligent Electric Co ltd
Priority date: 2020-08-22
Filing date: 2020-08-22
Publication date: 2021-02-26
Anticipated expiration: 2030-08-22

Abstract

The invention discloses a short-circuit detection device with a protection structure for fault diagnosis of a looped network power distribution cabinet, which particularly comprises a diagnostor main body, an infrared probe, a mounting seat and a mounting shaft, wherein a rotating seat is arranged in the middle of one end of the diagnostor main body, a mounting ball is arranged in the rotating seat, a mounting plate is fixed at one end of the mounting ball, which is far away from the diagnostor main body, the mounting seat is connected with one end of the mounting plate, which is far away from the mounting ball, one side of the mounting seat is hinged with a first wrist strap, the other side of the mounting seat is hinged with a second wrist strap matched with the first wrist strap, the short-circuit detection device with the protection structure for fault diagnosis of the looped network power distribution cabinet can form a watch-shaped structure by arranging the mounting seat, the first wrist strap and the second wrist strap, and can be directly used by fixing the, the hands of workers are liberated, so that the maintenance and the diagnosis can be synchronously operated, and the maintenance efficiency is improved.

Description

Short circuit detection device with protection structure for fault diagnosis of looped network power distribution cabinet

Technical Field

The invention relates to the technical field of fault detection, in particular to a short circuit detection device with a protection structure for fault diagnosis of a looped network power distribution cabinet.

Background

The Ring Main Unit (Ring Main Unit) is a group of electric equipment (high-voltage switch equipment) which is arranged in a metal or nonmetal insulating cabinet body or is made into an assembled interval Ring Main power supply Unit, the core part of the Ring Main Unit adopts a load switch and a fuse, the Ring Main Unit has the advantages of simple structure, small volume, low price, capability of improving power supply parameters and performance, power supply safety and the like, and is widely used in distribution stations and box-type substations of load centers of urban residential districts, high-rise buildings, large public buildings, factory enterprises and the like.

Common switch board fault detection equipment is types such as console mode, hand-held type usually, uses these diagnostic equipment to need the diagnosis separately to go on with the maintenance, however the maintenance of switch board usually needs electrician's both hands simultaneous operation, and this just must be with diagnosis and maintenance cross operation, can't go on simultaneously, and the maintenance is comparatively inconvenient.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a short circuit detection device with a protection structure for fault diagnosis of a looped network power distribution cabinet, which solves the problems in the background technology.

In order to achieve the purpose, the invention is realized by the following technical scheme: a short-circuit detection device with a protection structure for fault diagnosis of a looped network power distribution cabinet comprises a diagnostor main body, an infrared detection head, a mounting seat and a mounting shaft, wherein a rotating seat is mounted at the middle position of one end of the diagnostor main body, a mounting ball is arranged in the rotating seat, a mounting plate is fixed at one end of the mounting ball, which is far away from the diagnostor main body, a mounting seat is connected at one end of the mounting plate, which is far away from the mounting ball, a first wrist strap is hinged to one side of the mounting seat, a second wrist strap matched with the first wrist strap is hinged to the other side of the mounting seat, a display screen is mounted at one side of the diagnostor main body, which is far away from the mounting ball and is close to the first wrist strap, an alarm is arranged on the diagnostor main body below the display screen, a magnetic absorption groove is formed at the top end of, one side that the diagnostor main part is close to first wrist strap is provided with the test pencil slot, and has pegged graft the test pencil in the test pencil slot, the intermediate position department on diagnostor main part top installs infrared detecting head, and the inside bottom of diagnostor main part evenly is provided with the battery, the intermediate position department on the inside top of diagnostor main part installs the memory, and is fixed with the singlechip in the diagnostor main part of memory one side, install signal processing module in the diagnostor main part of memory opposite side, and signal processing module's output passes through the wire can with the input electric connection of singlechip.

Optionally, the middle position of one end of the diagnostor body far away from the installation ball and close to one side of the second wrist strap is provided with a bobbin, two limit clamping grooves are formed in the diagnostor body below the bobbin, the inside of each limit clamping groove is connected with a multimeter pen, the output end of each multimeter pen is electrically connected with the input end of the signal processing module through a wire, and the wire is wound on the bobbin.

Optionally, four corners of the diagnotor main body are all inserted with arc-shaped protection plates, buffer springs are installed between the arc-shaped protection plates and the diagnotor main body, and the arc-shaped protection plates all form elastic buffer structures between the buffer springs and the diagnotor main body.

Optionally, the internal surface of roating seat all evenly inlays and is equipped with miniature ball, and the diagnostor main part passes through the roating seat and the installation ball constitutes the angular rotation with the mount pad and is connected, the longitudinal section of roating seat is the design of three fifths ring, and the internal diameter of roating seat is identical with the external diameter of installation ball.

Optionally, the intermediate position department that the installation ball one end was kept away from to the mounting panel is fixed with the installation axle, and the surface of installation axle has seted up and is the spiral helicine spacing groove, the mounting panel is pegged graft through installation axle and mount pad.

Optionally, the mount pad has seted up the jack near the intermediate position department of installation ball one end, and the internal diameter of jack is identical with the external diameter of installation axle, the one end that the mount pad inside wall is close to the installation ball evenly is provided with the reed, and the internally mounted of mount pad has compression spring, the reed cross section all is the arc, and the reed is the slope design, compression spring is close to the one end of installation ball and evenly is fixed with the movable block, and the movable block is close to the position department of reed and all offers the guide slot identical with the reed shape.

Optionally, the depression bar has all been run through to the one end that the mount pad both sides are close to the installation ball, and all overlaps on the depression bar in the mount pad outside and be equipped with reset spring, the terminal lateral wall that all runs through the mount pad of depression bar is pressed close to with the reed mutually with the movable block, and the end of depression bar all inlays and is equipped with the ball.

Optionally, the movable block is provided with threely, and the movable block is fan ring column structural design, and three movable block can constitute a ring, the contained angle between movable block and the horizontal plane is 60, and the internal surface of movable block all inlays and is equipped with the identical spacing pearl of spacing groove shape with the installation axle.

Optionally, the mounting shaft coincides with a central axis of the compression spring, and the diameter of the mounting shaft is smaller than the inner diameter of the compression spring.

The invention provides a short circuit detection device with a protection structure for fault diagnosis of a looped network power distribution cabinet, which has the following beneficial effects:

1. this looped netowrk switch board fault diagnosis is with short circuit detection device who has protective structure, through being provided with mount pad, first wrist strap and second wrist strap, the three can constitute a wrist-watch column structure, can directly fix the diagnostor main part through the installation axle during use and use on the mount pad, liberates staff's both hands for maintenance and diagnosis can be operated in step, and the design of wrist strap formula can more conveniently audio-visual real-time information of seeing the diagnosis simultaneously, improves the efficiency of maintenance.

2. This looped netowrk switch board fault diagnosis is with short circuit detection device who has protective structure, through with the universal meter pen, test pencil and magnetism inhale that formula temperature and humidity sensor is whole integrated to the diagnotor main part, electrician only need carry this device when diagnosing and overhauing the switch board alright carry out each item troubleshooting to the switch board, magnetism is inhaled formula temperature and humidity sensor and can directly magnetism inhale and detect temperature and humidity in the switch board on the inside iron part of switch board, need not other extra fixed spacing modes, it is very convenient to use.

3. This looped netowrk switch board fault diagnosis is with short circuit detection device who has protective structure, through being provided with the depression bar, the reed, movable block and spacing pearl, three movable block can constitute a ring can cooperate spacing pearl to carry out better spacing fixed to the installation axle, when the installation axle is inserted, compression spring is compressed, the movable block pushes down along reed below to one side, distance increase between the spacing pearl, be convenient for the installation axle inserts smoothly, and under the user state, the movable block pushes up under spring force effect, upwards pull out the installation axle during movable block atress upwards, the movable block is more upwards, the clearance of its formation is more little more, distance between the spacing pearl is also shorter more, it is tighter with installing the axle card, it is more firm to diagnose ware main part and mount pad connection promptly, and the equipment dismantlement is very convenient.

4. This looped netowrk switch board fault diagnosis is with short-circuit detection device who has protective structure, through be provided with infrared detecting head and display screen in the diagnotor main part, equipment in the switch board, when the circuit appears hot state unusual and overheated trouble, its abnormal position and fault point department will radiate more than normal state, stronger infrared energy to detected by infrared detecting head, the staff can be on the display screen clear see the accurate position of trouble, thereby accomplish accurate detection, promote the efficiency of troubleshooting greatly.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic side view of the cross-sectional structure of the present invention;

FIG. 3 is a schematic view of a front cross-sectional structure of the mounting base of the present invention;

FIG. 4 is a schematic front sectional view of the main body of the diagnostic device of the present invention;

FIG. 5 is a schematic side sectional view of the mounting base according to the present invention.

In the figure: 1. a diagnostor body; 101. an infrared detector head; 102. an arc-shaped protection plate; 2. a first wristband; 3. a second wristband; 4. a display screen; 5. an alarm; 6. a multimeter pen; 601. a limiting clamping groove; 7. a bobbin; 8. a magnetic-type temperature and humidity sensor; 9. a magnetic attraction groove; 10. a test pencil; 1001. a test pencil slot; 11. a rotating base; 12. mounting the ball; 13. mounting a plate; 14. a pressure lever; 1401. a return spring; 15. a mounting seat; 1501. a jack; 16. a reed; 17. a movable block; 18. a limiting bead; 19. a single chip microcomputer; 20. a memory; 21. a signal processing module; 22. a storage battery; 23. installing a shaft; 2301. a limiting groove; 24. a ball bearing; 25. compressing the spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus are not to be construed as limiting the present invention, and furthermore, the terms "first", "second", "third", and the like are only used for descriptive purposes and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art will understand the specific meaning of the above terms in the present invention in specific situations.

Referring to fig. 1 to 5, the present invention provides a technical solution: a short circuit detection device with a protection structure for fault diagnosis of a looped network power distribution cabinet comprises a diagnostor body 1, an infrared detection head 101, a mounting seat 15 and a mounting shaft 23, wherein a rotating seat 11 is mounted at the middle position of one end of the diagnostor body 1, a mounting ball 12 is arranged inside the rotating seat 11, a bobbin 7 is mounted at the middle position of one end of the diagnostor body 1, which is far away from the mounting ball 12, close to one side of a second wrist strap 3, the diagnostor body 1 below the bobbin 7 is provided with two limiting clamping grooves 601, universal meter pens 6 are clamped inside the limiting clamping grooves 601, the output ends of the universal meter pens 6 are electrically connected with the input ends of a signal processing module 21 through wires, the wires are wound on the bobbin 7, when the short circuit detection device is not used, connecting wires of the universal meter pens 6 and a magnetic temperature and humidity sensor 8 can be directly wound on the bobbin 7 to avoid winding and knott, more be convenient for accomodate, and spacing draw-in groove 601 can carry on spacingly to multimeter pen 6, makes multimeter pen 6 more be convenient for get and put, and it is very convenient to use.

All pegging graft at four corners of diagnotor main part 1 has arc protection plate 102, and all install buffer spring between arc protection plate 102 and the diagnotor main part 1, arc protection plate 102 all constitutes the elastic buffer structure through buffer spring and diagnotor main part 1 between, arc protection plate 102 can form suitable circular arc at the corner of diagnotor main part 1 just, make the pleasing to the eye degree of diagnotorious 1 corner higher and be difficult for colliding with bad, and elastic buffer structure design arc protection plate 102 earlier with ground contact when making device edge fall to the ground, thereby arc protection plate 102 atress pushes down and drives the buffer spring shrink, external impact force will be alleviated at the in-process of buffer spring shrink, avoid the device to damage because of dropping or colliding, the life of device has been improved.

The internal surface of roating seat 11 all evenly inlays and is equipped with miniature ball, and diagnostic ware main part 1 constitutes angular rotation through roating seat 11 and installation ball 12 and mount pad 15 and is connected, the longitudinal section of roating seat 11 is three fifths of ring design, and the internal diameter of roating seat 11 is identical with the external diameter of installation ball 12, the design of rotating the connection makes diagnostic ware main part 1 can use installation ball 12 as the fulcrum free rotation, the angle that the adjustment is fit for, influence the wrist activity when avoiding wearing, and miniature ball design makes roating seat 11 rotate more smoothly on installation ball 12, three fifths of ring design makes roating seat 11 difficult and installation ball 12 separate, it is more reasonable to design.

The end of the mounting ball 12 far away from the diagnostic device body 1 is fixed with a mounting plate 13, the end of the mounting plate 13 far away from the mounting ball 12 is connected with a mounting seat 15, the middle position of the mounting seat 15 near the end of the mounting ball 12 is provided with a jack 1501, the inner diameter of the jack 1501 is matched with the outer diameter of the mounting shaft 23, one end of the inner side wall of the mounting seat 15 near the mounting ball 12 is uniformly provided with a reed 16, a compression spring 25 is arranged in the mounting seat 15, the cross section of the reed 16 is arc-shaped, the reed 16 is in inclined design, one end of the compression spring 25 near the mounting ball 12 is uniformly fixed with a movable block 17, the position of the movable block 17 near the reed 16 is provided with a guide groove matched with the shape of the reed 16, the reed 16 is arc-shaped and is arranged in an inclined manner, the movable block 17 is attached to the reed 16 through the guide groove, so that the movable block 17 is also in an, when the mounting shaft 23 is inserted, the compression spring 25 is compressed, the movable block 17 moves obliquely downwards along the reed 16, the distance between the limiting beads 18 is increased, the mounting shaft 23 can be conveniently and smoothly inserted, after the insertion is completed, the movable block 17 moves upwards under the elastic force of the compression spring 25, the limiting beads 18 are clamped with the limiting grooves 2301 of the mounting shaft 23, at the moment, if the mounting shaft 23 is pulled upwards, the stress of the movable block 17 is upward, the gap formed by the movable block 17 is smaller upwards, the distance between the limiting beads 18 is also shorter, the mounting shaft 23 is clamped more tightly, even if the diagnostor main body 1 is connected with the mounting seat 15 more stably, and the use safety is higher.

The movable block 17 is provided with threely, and the movable block 17 is fan ring column structural design, and three movable block 17 can constitute a ring, and the contained angle between movable block 17 and the horizontal plane is 60, and the internal surface of movable block 17 all inlays and is equipped with the spacing pearl 18 identical with the spacing groove 2301 shape of installation axle 23, constitutes a ring design, can enough play the guide effect to the insertion of installation axle 23, can cooperate spacing pearl 18 again to carry out better spacing fixed to installation axle 23.

The one end that the mount pad 15 both sides are close to the installation ball 12 all runs through there is depression bar 14, and all overlap on the depression bar 14 in the mount pad 15 outside and be equipped with reset spring 1401, the lateral wall that the mount pad 15 was all run through to depression bar 14's end is close to with reed 16 and movable block 17 mutually, and depression bar 14's end all inlays and is equipped with ball 24, press depression bar 14, make 14 terminal ball 24 of depression bar withstand movable block 17, because movable block 17 inclines to place, consequently, the effect direction of force when pressing can take place to change under ball 24's effect, it can make movable block 17 move down to press depression bar 14 promptly, thereby release installation axle 23, conveniently with diagnostic device main part 1 and mount pad 15 splits, the design is more reasonable.

Mounting panel 13 is kept away from the intermediate position department of installation ball 12 one end and is fixed with installation axle 23, and the surface of installation axle 23 is seted up and is spiral helicine spacing groove 2301, mounting panel 13 is pegged graft through installation axle 23 and mount pad 15, the grafting design makes diagnostor main part 1 directly peg graft on mount pad 15, conveniently wear diagnostor main part 1 on the wrist, thereby liberation staff's both hands, make maintenance and diagnosis operate in step, the design of pegging graft also makes assembly and disassembly all very convenient on diagnostor main part 1 and the mount pad 15 in addition.

Installation axle 23 and compression spring 25's axis coincidence, and the diameter of installation axle 23 is less than compression spring 25's internal diameter, and axis coincidence design and the internal diameter design that the internal diameter is less than compression spring 25 make compression spring 25 can overlap just at installation axle 23 periphery, can not lead to the fact the hindrance to the inserting of installation axle 23, and installation axle 23 inserts more smoothly, designs more rationally.

One side of the mounting seat 15 is hinged with a first wrist strap 2, the other side of the mounting seat 15 is hinged with a second wrist strap 3 matched with the first wrist strap 2, one side of the diagnostic apparatus body 1 far away from the mounting ball 12 and close to the first wrist strap 2 is provided with a display screen 4, an alarm 5 is arranged on the diagnostic apparatus body 1 below the display screen 4, the top end of one side of the diagnostic apparatus body 1 far away from the mounting ball 12 and close to the second wrist strap 3 is provided with a magnetic absorption groove 9, a magnetic absorption type temperature and humidity sensor 8 is absorbed in the magnetic absorption groove 9, one side of the diagnostic apparatus body 1 close to the first wrist strap 2 is provided with a test pencil slot 1001, a test pencil 10 is inserted in the test pencil slot 1001, an infrared detection head 101 is arranged at the middle position of the top end of the diagnostic apparatus body 1, a storage battery 22 is uniformly arranged at the bottom end of the diagnostic apparatus body 1, and a storage 20 is arranged at the middle, and a single chip microcomputer 19 is fixed in the diagnostic device body 1 on one side of the memory 20, a signal processing module 21 is installed in the diagnostic device body 1 on the other side of the memory 20, and the output end of the signal processing module 21 can be electrically connected with the input end of the single chip microcomputer 19 through a wire.

In summary, in the short circuit detection device with the protection structure for fault diagnosis of the ring network power distribution cabinet, when in use, the mounting seat 15 is fixed on the wrist through the first wrist strap 2 and the second wrist strap 3, then the diagnostic device main body 1 is taken up, the mounting shaft 23 on the back side is inserted into the mounting seat 15 through the insertion hole 1501 of the mounting seat 15, when in insertion, the three movable blocks 17 can form a ring, which not only can play a role of guiding the insertion of the mounting shaft 23, but also can match with the limit beads 18 to better limit and fix the mounting shaft 23, because the spring 16 is arc-shaped and is obliquely arranged, and the movable blocks 17 are attached to the spring 16, the gap above the movable blocks 17 is smaller, and the gap below the movable blocks 17 is larger, when the mounting shaft 23 is inserted, the compression spring 25 is compressed, the movable blocks 17 are pressed downwards along the spring 16, the distance between the limit beads 18 is increased, thereby facilitating the smooth, after the plugging is completed, the movable block 17 moves upwards under the elastic force of the compression spring 25, meanwhile, the limiting beads 18 are clamped with the limiting grooves 2301 of the mounting shaft 23, if the mounting shaft 23 is pulled upwards, the stress of the movable block 17 is upward, the more upward the movable block 17 is, the smaller the gap formed by the movable block 17 is, the shorter the distance between the limiting beads 18 is, the tighter the mounting shaft 23 is, when the mounting shaft 23 is clamped, the diagnostic device main body 1 is taken by hand into the power distribution cabinet to align the infrared probe 101 with the equipment and circuits in the power distribution cabinet, when the equipment and circuits in the power distribution cabinet have thermal anomaly and overheating fault, the abnormal parts and fault points can emit more infrared energy than normal state and stronger infrared energy, so that the infrared probe 101 detects the infrared probe 101, the infrared probe 101 can transmit the data to the signal processing module 21, the processed information can be transmitted to the singlechip 19, and the singlechip 19 can compare the information with the normal state data stored in the memory 20, and display abnormal signal on display screen 4 to accomplish accurate detection, then the staff can utilize two universal meter pens 6 to carry out voltage, current and resistance measurement to the position that has the anomaly, accomplish the fault diagnosis of switch board.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a looped netowrk switch board fault diagnosis is with short circuit detection device who has protective structure, includes diagnostic ware main part (1), infrared detection head (101), mount pad (15) and installation axle (23), its characterized in that: a rotating seat (11) is installed at the middle position of one end of the diagnostor main body (1), a mounting ball (12) is arranged in the rotating seat (11), a mounting plate (13) is fixed at one end, away from the diagnostor main body (1), of the mounting ball (12), a mounting seat (15) is connected at one end, away from the mounting ball (12), of the mounting plate (13), a first wrist strap (2) is hinged to one side of the mounting seat (15), a second wrist strap (3) matched with the first wrist strap (2) is hinged to the other side of the mounting seat (15), a display screen (4) is installed at one side, close to the first wrist strap (2), of one end, away from the mounting ball (12), of the diagnostor main body (1), an alarm (5) is arranged on the diagnostor main body (4), a magnetic absorption groove (9) is formed at the top end, close to the second wrist strap (3), away from the mounting ball (12), of the diagnostor main, a magnetic temperature and humidity sensor (8) is absorbed in the magnetic absorption groove (9), a test pencil slot (1001) is arranged at one side of the diagnostor body (1) close to the first wrist strap (2), a test pencil (10) is inserted in the test pencil slot (1001), an infrared probe (101) is arranged in the middle of the top end of the diagnostor main body (1), and the bottom end inside the main body (1) of the diagnosis device is evenly provided with a storage battery (22), a memory (20) is arranged at the middle position of the top end in the main body (1), a singlechip (19) is fixed in the diagnostor body (1) at one side of the memory (20), a signal processing module (21) is arranged in the diagnostor body (1) at the other side of the memory (20), and the output end of the signal processing module (21) can be electrically connected with the input end of the singlechip (19) through a lead.

2. The short-circuit detection device with the protection structure for fault diagnosis of the looped network power distribution cabinet according to claim 1, characterized in that: the utility model discloses a diagnosis instrument, including diagnostic apparatus main part (1), installation ball (12), signal processing module (21), wire reel (7) are installed to the intermediate position department that diagnostic apparatus main part (1) kept away from installation ball (12) one end and is close to second wrist strap (3) one side, and is provided with two spacing draw-in grooves (601) on diagnostic apparatus main part (1) of reel (7) below, the equal joint in inside of spacing draw-in groove (601) has universal meter pen (6), and the output of universal meter pen (6) all through the input electric connection of wire with signal processing module (21), the wire twines on reel (7).

3. The short-circuit detection device with the protection structure for fault diagnosis of the looped network power distribution cabinet according to claim 1, characterized in that: arc-shaped protection plates (102) are inserted into four corners of the diagnostor main body (1), buffer springs are installed between the arc-shaped protection plates (102) and the diagnostor main body (1), and the arc-shaped protection plates (102) form elastic buffer structures between the buffer springs and the diagnostor main body (1).

4. The short-circuit detection device with the protection structure for fault diagnosis of the looped network power distribution cabinet according to claim 1, characterized in that: the internal surface of roating seat (11) all evenly inlays and is equipped with miniature ball, and diagnostic ware main part (1) constitutes the angular rotation through roating seat (11) and installation ball (12) and mount pad (15) and is connected, the longitudinal section of roating seat (11) is three fifths of ring design, and the internal diameter of roating seat (11) is identical with the external diameter of installation ball (12).

5. The short-circuit detection device with the protection structure for fault diagnosis of the looped network power distribution cabinet according to claim 1, characterized in that: mounting plate (13) are kept away from intermediate position department of installation ball (12) one end and are fixed with installation axle (23), and install the surface of axle (23) and offer and be spiral helicine spacing groove (2301), mounting plate (13) are pegged graft through installation axle (23) and mount pad (15).

6. The short-circuit detection device with the protection structure for fault diagnosis of the looped network power distribution cabinet according to claim 1, characterized in that: the utility model discloses a mounting structure, including mount pad (15), installation ball (12), installation ball (15) and mounting base (15), the intermediate position department that is close to installation ball (12) one end has seted up jack (1501), and the internal diameter of jack (1501) is identical with the external diameter of installation axle (23), the one end that the installation ball (12) is close to installation ball (15) inside wall evenly is provided with reed (16), and the internally mounted of mount pad (15) has compression spring (25), reed (16) cross section all is the arc, and reed (16) are the slope design, the one end that compression spring (25) are close to installation ball (12) is evenly fixed with movable block (17), and movable block (17) are close to the position department of reed (16) and all offer the identical guide slot with reed.

7. The short-circuit detection device with the protection structure for fault diagnosis of the looped network power distribution cabinet according to claim 1, characterized in that: the utility model discloses a mounting seat, including mount pad (15), mount pad (15) both sides, the one end that is close to installation ball (12) all runs through depression bar (14), and all overlaps on depression bar (14) in the mount pad (15) outside and is equipped with reset spring (1401), the lateral wall that the terminal of depression bar (14) all runs through mount pad (15) is pressed close to mutually with reed (16) and movable block (17), and the terminal of depression bar (14) all inlays and is equipped with ball (24).

8. The short-circuit detection device with the protection structure for fault diagnosis of the looped network power distribution cabinet according to claim 7, characterized in that: the movable block (17) is provided with threely, and movable block (17) are fan ring column structural design, and three movable block (17) can constitute a ring, the contained angle between movable block (17) and the horizontal plane is 60, and the internal surface of movable block (17) all inlays and is equipped with spacing pearl (18) identical with spacing groove (2301) shape of installation axle (23).

9. The short-circuit detection device with the protection structure for fault diagnosis of the looped network power distribution cabinet according to claim 1, characterized in that: the installation axle (23) coincides with the central axis of the compression spring (25), and the diameter of the installation axle (23) is smaller than the inner diameter of the compression spring (25).