CN210572705U

CN210572705U - Ammeter fault indicator detection board with pre-alarming function

Info

Publication number: CN210572705U
Application number: CN201921397450.3U
Authority: CN
Inventors: 魏修状
Original assignee: Hefei Dimii Electronic Technology Co Ltd
Current assignee: Hefei Dimii Electronic Technology Co Ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-05-19
Anticipated expiration: 2029-08-27

Abstract

The utility model discloses an ammeter fault indicator pick-up plate with alarming function in advance, including the pick-up plate body, square groove has been seted up to the upper end of pick-up plate body, all install first electric conduction post on two wherein relative inner walls in square groove, all install the second on two other relative inner walls in square groove and lead electric conduction post, first electric conduction post and external power supply line electric connection, the second is led electric conduction post and external alarm device electric connection, the interior bottom rotation in square groove is connected with the busbar. The utility model discloses a temperature rises to the flexible temperature of CuZnAl memory alloy spring in the circuit, and CuZnAl memory alloy spring contracts and makes the busbar break off from the circuit, and with external alarm device's electric current switch-on simultaneously, both at the very first time disconnection power supply line in electric current like this, avoid faults such as short circuit to take place, send out the police dispatch newspaper simultaneously, inform the staff to keep in repair to the trouble emergence.

Description

Ammeter fault indicator detection board with pre-alarming function

Technical Field

The utility model relates to an ammeter fault indicator equipment technical field especially relates to an ammeter fault indicator pick-up plate with warning function in advance.

Background

An electricity meter fault indicator refers to a device mounted on an electricity meter that indicates a fault current. Most fault indicators can only discriminate, indicating a short circuit fault by detecting the characteristics of the short circuit current.

The detection board is a core element in the fault indicator of the ammeter, and the fault indicator indicates fault current by sensing short-circuit current through the detection board. In order to solve the problem, application number 201020224495.3 proposes a panel type short circuit grounding fault indicator with a pre-alarm function, which monitors the temperature and current information of a line in real time, and when the current and the temperature exceed preset values, sends out an alarm signal in a specific mode to remind a worker that the line is abnormal, thereby eliminating the possible fault in time. However, this method does not deal with the line in the first time, and during the time when the worker goes to the place where the fault occurs and gets rid of the fault, a short-circuit accident may occur, thereby causing damage to the power supply system.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an ammeter fault indicator detection board with a pre-alarming function.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an ammeter fault indicator pick-up plate with warning function in advance, includes the pick-up plate body, square groove has been seted up to the upper end of pick-up plate body, all install first leading electrical pillar on two of them relative inner walls in square groove, all install the second on two other relative inner walls in square groove and lead electrical pillar, first leading electrical pillar and external power supply line electric connection, the second leads electrical pillar and external alarm device electric connection, the interior bottom in square groove rotates and is connected with the busbar, just the both ends of busbar are led electrical pillar counterbalance with two first leading electrical pillars respectively, the busbar cooperatees with two second leading electrical pillar, the bar groove has been seted up to the lateral wall of pick-up plate body, the bar inslot is installed drive busbar pivoted drive arrangement.

Preferably, the driving device comprises a gear rotatably connected to the top of the strip-shaped groove through a rotating shaft, the upper end of the rotating shaft extends into the square groove and is fixedly connected to the central position of the side wall of the conductive bar, a rack meshed with the gear is slidably connected to the inner wall of the strip-shaped groove, and one end of the rack is elastically connected to the inner wall of the strip-shaped groove through a CuZnAl memory alloy spring.

Preferably, the central position of the upper end of the side wall of the conductive bar is fixedly connected with an insulating handle through a connecting rod, and the lower end of the side wall of the conductive bar is coaxially and fixedly connected with the rotating shaft through a one-way bearing.

Preferably, one end of the CuZnAl memory alloy spring is fixedly connected to the end part of the rack, and the other end of the CuZnAl memory alloy spring is fixedly connected to the inner wall of the strip-shaped groove.

Preferably, the ratio of the number of teeth of the rack to the number of teeth of the gear is 1: 4, and the connecting rod and the insulating handle are both made of rubber materials.

Preferably, a plurality of mounting holes are formed in the upper end of the detection plate body, and each mounting hole is internally and threadedly connected with a locking screw.

The utility model discloses following beneficial effect has:

1. the CuZnAl memory alloy spring retracts when the temperature in the circuit rises to the stretching temperature of the CuZnAl memory alloy spring, so that the rack is pulled to move, the gear and the conductive strip are rotated by 90 degrees, the conductive strip is disconnected from the circuit, and the current of an external alarm device is connected, so that the current in a power supply circuit is disconnected at the first time, the faults such as short circuit and the like are avoided, and meanwhile, the alarm device gives an alarm to inform a worker to repair the fault place;

2. through setting up connecting rod, insulating hand (hold) and one-way bearing, catch up to trouble place and after the maintenance finishes at the staff, can directly rotate insulating hand (hold) and put through the circuit current again, need not to wait for after the circuit temperature reduces gradually the rack, gear and busbar pull back through CuZnAl memory alloy spring, one-way bearing can make CuZnAl memory alloy spring can not drive the busbar and take place to rotate when pulling back rack and gear simultaneously.

Drawings

Fig. 1 is a schematic structural view of an electricity meter fault indicator detection board with a pre-alarm function provided by the utility model;

fig. 2 is a schematic view of a top view structure of an electricity meter fault indicator detection board with a pre-alarm function provided by the present invention;

fig. 3 is the utility model provides a structure schematic diagram when the trouble of ammeter fault indicator pick-up plate with warning function in advance probably takes place.

In the figure: the detection plate comprises a detection plate body 1, a square groove 2, a conductive strip 3, a first conductive column 4, a second conductive column 5, a one-way bearing 6, a rotating shaft 7, a gear 8, a rack 9, a CuZnAl memory alloy spring 10, a strip-shaped groove 11, a connecting rod 12, an insulating handle 13, a mounting hole 14 and a locking screw 15.

Detailed Description

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

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, an electricity meter fault indicator detection board with a pre-alarm function comprises a detection board body 1, wherein the upper end of the detection board body 1 is provided with a plurality of mounting holes 14, each mounting hole 14 is internally and spirally connected with a locking screw 15, the upper end of the detection board body 1 is provided with a square groove 2, two opposite inner walls of the square groove 2 are respectively provided with a first conductive post 4, the other two opposite inner walls of the square groove 2 are respectively provided with a second conductive post 5, the first conductive post 4 is electrically connected with an external power supply circuit, the second conductive post 5 is electrically connected with an external alarm device, it is to be noted that the connection mode of the first conductive post 4 and the external power supply circuit is the existing mature technology, the connection mode of the second conductive post 5 and the external alarm device is also the existing mature technology, and meanwhile, the external alarm device is also the existing alarm, the interior bottom of square groove 2 rotates and is connected with conducting bar 3, and the lateral wall upper end central point of conducting bar 3 puts the department through connecting rod 12 fixedly connected with insulating hand (hold) 13, and connecting rod 12 and insulating hand (hold) 13 make by rubber materials, and the both ends of conducting bar 3 respectively with two first lead electrical pillar 4 offsets, can make conducting bar 3's both ends and two first lead the frictional resistance great between electrical pillar 4, under the less circumstances of no external force or external force, conducting bar 3 can not take place the natural rotation, conducting bar 3 leads electrical pillar 5 with two seconds and cooperatees, strip groove 11 has been seted up to the lateral wall of pick-up plate body 1, installs the pivoted drive arrangement of drive conducting bar 3 in the strip groove 11.

The driving device comprises a gear 8 which is rotatably connected to the top in a strip-shaped groove 11 through a rotating shaft 7, the upper end of the rotating shaft 7 extends into a square groove 2 and is fixedly connected to the central position of the side wall of a conductive strip 3, the lower end of the side wall of the conductive strip 3 is coaxially and fixedly connected with the rotating shaft 7 through a one-way bearing 6, a rack 9 meshed with the gear 8 is slidably connected to the inner wall of the strip-shaped groove 11, the one-way bearing 6 is installed between the rotating shafts 7 of the conductive strip 3, when the conductive strip rotates due to the rotation of an insulating handle 13, the gear 8 is not driven to rotate, so that the gear 9 does not generate motion interference, the tooth number ratio of the rack 9 to the gear 8 is 1: 4, the tooth number ratio of the rack 9 to the gear 8 can ensure that the conductive strip 3 can be driven to rotate for 90 degrees when the rack 9 completely pushes the gear 8 to rotate, and one, one end of a CuZnAl memory alloy spring 10 is fixedly connected with the end part of the rack 9, the other end of the CuZnAl memory alloy spring 10 is fixedly connected with the inner wall of the strip-shaped groove 11, and it should be noted that the CuZnAl memory alloy spring 10 is made by winding CuZnAl memory alloy wires, the CuZnAl memory alloy wire also utilizes the two-way memory effect of shape memory alloy, and is a temperature sensing driving element which can automatically stretch and contract along with the change of temperature, the stretching temperature is 65-85 ℃, the free state, namely the low temperature (room temperature) is 200mm, and the shortened state, namely the high temperature (65-85 ℃) is 100 mm.

The utility model discloses in, when probably breaking down in the power supply line, the temperature risees gradually in the circuit, when the temperature rises to the flexible temperature of CuZnAl memory alloy spring 10, CuZnAl memory alloy spring 10 contracts and contracts, thereby pulling rack 9 and returning, thereby make gear 8 rotate 90 degrees (the tooth number ratio of rack 9 and gear 8 is 1: 4), will drive busbar 3 simultaneously and rotate 90 degrees, make busbar 3 drop from between two first conductive columns 4, and lead 5 offsets with two second conductive columns, make busbar 3 break off from the power supply line, put through external alarm device's electric current simultaneously, both disconnected power supply line medium current at the first time like this, avoid faults such as short circuit to take place, send out the police dispatch newspaper through alarm device simultaneously, inform the staff to keep pace with the place of the fault and maintain;

after the staff drives to the fault place and the maintenance is finished, the insulating handle 13 can be directly rotated to reconnect the line current, the rack 9, the gear 8 and the bus bar 3 are pulled back through the CuZnAl memory alloy spring 10 after the line temperature is gradually reduced, and meanwhile, the one-way bearing 6 can ensure that the CuZnAl memory alloy spring 10 can not drive the bus bar 3 to rotate when the rack 9 and the gear 8 are pulled back.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An ammeter fault indicator detection plate with a pre-alarming function comprises a detection plate body (1) and is characterized in that a square groove (2) is formed in the upper end of the detection plate body (1), first conductive columns (4) are mounted on two opposite inner walls of the square groove (2), second conductive columns (5) are mounted on the other two opposite inner walls of the square groove (2), the first conductive columns (4) are electrically connected with an external power supply line, the second conductive columns (5) are electrically connected with an external alarming device, a conductive bar (3) is rotatably connected to the inner bottom of the square groove (2), two ends of the conductive bar (3) respectively abut against the two first conductive columns (4), the conductive bar (3) is matched with the two second conductive columns (5), and a strip-shaped groove (11) is formed in the side wall of the detection plate body (1), and a driving device for driving the conductive strips (3) to rotate is arranged in the strip-shaped groove (11).

2. The detection plate with the pre-alarm function for the electric meter fault indicators as claimed in claim 1, wherein the driving device comprises a gear (8) rotatably connected to the top inside the strip-shaped groove (11) through a rotating shaft (7), the upper end of the rotating shaft (7) extends into the square groove (2) and is fixedly connected to the central position of the side wall of the conductive bar (3), a rack (9) meshed with the gear (8) is slidably connected to the inner wall of the strip-shaped groove (11), and one end of the rack (9) is elastically connected to the inner wall of the strip-shaped groove (11) through a CuZnAl memory alloy spring (10).

3. The detection board for the electric meter fault indicator with the pre-alarm function according to claim 2, characterized in that an insulating handle (13) is fixedly connected to the center of the upper end of the side wall of the conductive bar (3) through a connecting rod (12), and the lower end of the side wall of the conductive bar (3) is coaxially and fixedly connected with the rotating shaft (7) through a one-way bearing (6).

4. An electricity meter fault indicator detection plate with a pre-alarm function according to claim 2, characterized in that one end of the CuZnAl memory alloy spring (10) is fixedly connected to the end of the rack (9), and the other end of the CuZnAl memory alloy spring (10) is fixedly connected to the inner wall of the strip-shaped groove (11).

5. The detection plate for the fault indicators of the electric meters with the pre-alarm function according to claim 3, characterized in that the ratio of the number of teeth of the rack (9) to the number of teeth of the gear (8) is 1: 4, and the connecting rod (12) and the insulated handle (13) are made of rubber materials.

6. The electricity meter fault indicator detection plate with the pre-alarm function according to claim 1, characterized in that a plurality of mounting holes (14) are formed in the upper end of the detection plate body (1), and a locking screw (15) is in threaded connection with each mounting hole (14).