CN210293657U

CN210293657U - Cubical switchboard plum blossom touches and indicates pressure spring capability test device

Info

Publication number: CN210293657U
Application number: CN201921562582.7U
Authority: CN
Inventors: 南钰; 宋瑞卿; 张迎春; 郑罡; 王军亭
Original assignee: Kaifeng Power Supply Co of State Grid Henan Electric Power Co Ltd
Current assignee: Kaifeng Power Supply Co of State Grid Henan Electric Power Co Ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-04-10
Anticipated expiration: 2029-09-19

Abstract

The utility model belongs to the technical field of electrical equipment performance test, in particular to a switch cabinet plum blossom contact finger compression spring performance test device, which comprises a simulation contact rod and a plum blossom contact finger for simulating the opening and closing of a switch cabinet contact, and also comprises a temperature control cylinder for installing the plum blossom contact finger, wherein a through cavity is arranged at the middle position inside the temperature control cylinder; through setting up a control by temperature change section of thick bamboo, and set up a plurality of clubs in a control by temperature change section of thick bamboo and touch and indicate and simulate the contact pole, wherein the contact corresponds with the plum blossom touch and indicate quantity, pull out the in-process of inserting at the simulation, can a plurality of data of simultaneous measurement, and the side of tightening up the spring at same group has set up contrast spring, not only can follow the data that pressure sensor measured and draw the conclusion, can also participate in the contrast from the data that the pulling force detection module who is connected with contrast spring reachs, avoid because of the pulling force, the interference that frictional force measured out, can more audio-visual contrast, finally integrate a plurality of groups of data, reach comparatively accurate numerical value.

Description

Cubical switchboard plum blossom touches and indicates pressure spring capability test device

Technical Field

The utility model belongs to the technical field of electrical equipment performance test, concretely relates to cubical switchboard plum blossom is touched and is indicated pressure spring capability test device.

Background

The main failure mode of the switch cabinet is discharge burning, wherein the contact heating burning is a main failure mode, the contact heating is mainly caused by large contact resistance, the contact resistance is influenced by factors such as contact finger pressure, contact area and contact material types, the contact finger pressure is a main determining factor, the contact finger pressure is applied by a compression spring, the current is small when the power transmission load is low, the temperature is low, when the load peak is in summer or winter, the current is increased, the temperature is increased, the tension of the compression spring is reduced when the temperature is increased or aged, the contact finger pressure is reduced, the contact resistance is further increased, the temperature is further increased, the cycle is deteriorated, and finally the contact burning is caused.

At present, the performance of a plum blossom contact finger compression spring is tested by simulating the pulling force of a moving contact and a static contact, a Chinese patent with the publication number of CN109900445A discloses a device for testing the performance of the plum blossom contact finger compression spring of a switch cabinet, the scheme can simulate the pulling and inserting states of the plum blossom contact finger at different temperatures, and sequentially obtains whether the elastic performance of the compression spring is attenuated or not, but simulation tests have both contingency and particularity and need a large number of simulation tests to obtain a conclusion closer to the fact, so the scheme needs to repeat multiple tests to accumulate enough data, the process duration is longer, and the efficiency is lower.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a cubical switchboard plum blossom is touched and is pointed pressure spring capability test device has and to acquire multiunit data and contrast data simultaneously, the more accurate characteristics of test conclusion.

In order to achieve the above object, the utility model provides a following technical scheme: cubical switchboard plum blossom touches and indicates compression spring capability test device, including simulation contact pole and the plum blossom that is used for simulating the cubical switchboard contact to open and shut and touch and indicate, still including being used for the installation the plum blossom touches a temperature control section of thick bamboo that indicates, the inside intermediate position department of a temperature control section of thick bamboo has the cavity that link up, the plum blossom touches and indicates quantity is a plurality of, and a plurality of the plum blossom touches and indicates the equidistance and distributes on the inner wall of a temperature control section of thick bamboo, the plum blossom touches and indicates including a plurality of that is annular distribution touches and overlaps and establish touch and indicate the outside spring that is used for tightening up, the inside fixed mounting who touches and indicate has electric heat module, fixed mounting has the digital display temperature controller who is used for control, demonstration electric heat module temperature on the outer wall of a temperature control section of thick bamboo, simulation contact pole include with the plum blossom touch indicate contact and the connecting rod that quantity corresponds, the contact, the outer side wall of the contact is fixedly provided with a pressure sensor for testing the pressure of the contact finger, the outer wall of the temperature control cylinder is provided with a nixie tube display for displaying the detection value of the pressure sensor, the nixie tube display and the digital display temperature controller are both internally provided with a data storage module, and the nixie tube display and the digital display temperature controller are both electrically connected with an external power supply.

Preferably, a sleeve and a sliding rod are installed between the contact finger and the temperature control cylinder, the sleeve is fixed on the inner wall of the temperature control cylinder, the sliding rod is fixed on the outer wall of the contact finger, and the sleeve is in sliding connection with the sliding rod.

Preferably, the spring includes tightening spring and contrast spring, the outside one end that touches the finger has the lifting piece, contrast spring housing is located it is located to touch the finger outer wall the one end of lifting piece, tightening spring housing locates the other end.

Preferably, the length, thickness and elastic modulus of the tightening spring and the comparison spring are the same.

Preferably, the two ends of the comparison spring are also fixedly connected with tension detection modules, so that when the tightening spring and the comparison spring are respectively sleeved at the two ends of the contact finger, the tightening force on the contact finger is the same.

Preferably, the tension detection module is electrically connected with the nixie tube display.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model comprises a simulation contact rod and a plum blossom contact finger for simulating the opening and closing of a switch cabinet contact, and a temperature control cylinder for installing the plum blossom contact finger, wherein the temperature control cylinder is provided, and a plurality of plum blossom contact fingers and a simulation contact rod are arranged in the temperature control cylinder, the contact corresponds to the number of the plum blossom contact fingers, the simulation contact rod comprises a contact and a connecting rod corresponding to the number of the plum blossom contact fingers, the contact and the connecting rod are arranged in a staggered way, a plurality of data can be measured simultaneously in the process of simulating the plugging and unplugging, the spring comprises a tightening spring and a contrast spring, one end outside the contact finger is provided with a lifting block, the contrast spring is sleeved on the outer wall of the contact finger and is positioned at one end of the lifting block, the tightening spring is sleeved on the other end, the contrast spring is arranged on the side of the same group of tightening spring, and the conclusion can be obtained from the data measured, can also follow the data participation contrast that the pulling force detection module who is connected with the contrast spring reachs, avoid because of the interference that pulling force, frictional force measured out, can more audio-visual contrast, finally integrate many groups of data, reachs comparatively accurate numerical value.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic diagram of the distribution structure of the springs in the present invention;

fig. 4 is a schematic structural view of a quincunx contact finger and an analog contact rod of the present invention;

fig. 5 is a schematic view of the structure for simulating the operation of the contact rod according to the present invention.

In the figure: 1. a temperature control cylinder; 101. a cavity; 11. a sleeve; 12. a slide bar; 2. simulating a contact rod; 21. a contact; 211. a pressure sensor; 22. a connecting rod; 3. a plum-blossom contact finger; 31. a contact finger; 311. lifting the block; 312. an electric heating module; 32. a spring; 321. tightening the spring; 322. comparing the springs; 323. a tension detection module; 4. and a temperature controller is digitally displayed.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides the following technical solutions: the device for testing the performance of the plum blossom contact finger compression spring of the switch cabinet comprises a simulation contact rod 2 and plum blossom contact fingers 3 for simulating the opening and closing of contacts of the switch cabinet, and further comprises a temperature control cylinder 1 for mounting the plum blossom contact fingers 3, a through cavity 101 is arranged at the middle position in the temperature control cylinder 1, the number of the plum blossom contact fingers 3 is a plurality, the plurality of plum blossom contact fingers 3 are equidistantly distributed on the inner wall of the temperature control cylinder 1, each plum blossom contact finger 3 comprises a plurality of contact fingers 31 which are annularly distributed and a spring 32 which is sleeved outside the contact finger 31 and is used for tightening, an electric heating module 312 is fixedly mounted inside the contact finger 31, a digital display temperature controller 4 for controlling and displaying the temperature of the electric heating module 312 is fixedly mounted on the outer wall of the temperature control cylinder 1, the simulation contact rod 2 comprises contacts 21 and connecting rods 22, the number of which corresponds to the number of the plum blossom contact fingers 3, the contacts 21 and the connecting rods 22, the outer side wall of the contact 21 is fixedly provided with a pressure sensor 211 for testing the pressure of the contact finger 31, the outer wall of the temperature control cylinder 1 is provided with a nixie tube display for displaying the detection value of the pressure sensor 211, and the nixie tube display and the digital display temperature controller 4 are both internally provided with a data storage module and are both electrically connected with an external power supply.

In this embodiment, the distribution of the pressure sensors 211 and the pressure detection principle of the contact fingers 31 for the contact 21 are consistent with the principle of the scheme proposed in the comparison patent CN109900445A, the digital display temperature controller 4 can be used to set the temperatures of the electrothermal modules 312 in the test contact fingers 31 respectively, the temperatures are 20 ℃, 40 ℃, 60 ℃, 80 ℃, 100 ℃ and 120 ℃, the attenuation conditions of the springs 32 at different temperatures can be tested simultaneously by inserting and pulling the analog contact rod 2 in a reciprocating manner, by setting a temperature control cylinder 1 and setting a plurality of tulip contact fingers 3 and an analog contact rod 2 in the temperature control cylinder 1, wherein the number of the contacts 21 corresponds to the number of the tulip contact fingers 3, in the process of inserting and pulling the analog contacts, a plurality of data can be measured simultaneously, and the comparison springs 322 are set beside the same set of tightening springs 321, not only can a conclusion be drawn from the data measured by the pressure sensors 211, but also the data obtained from the tension detection module 323 connected with the comparison springs 322 can be compared, avoid because of the interference that pulling force, frictional force measured out, can more audio-visual contrast, finally integrate many group data, obtain comparatively accurate numerical value.

Specifically, a sleeve 11 and a sliding rod 12 are installed between the contact finger 31 and the temperature control cylinder 1, the sleeve 11 is fixed on the inner wall of the temperature control cylinder 1, the sliding rod 12 is fixed on the outer wall of the contact finger 31, and the sleeve 11 is slidably connected with the sliding rod 12, so that the contact finger 31 can move along a fixed track in the moving process, and the movement is smoother.

Specifically, the spring 32 includes a tightening spring 321 and a contrast spring 322, one end of the outer portion of the contact finger 31 has a lifting block 311, the contrast spring 322 is sleeved on the outer wall of the contact finger 31 and is located at one end of the lifting block 311, the tightening spring 321 is sleeved on the other end, the tightening spring 321 and the contrast spring 322 have the same length, thickness and elastic coefficient, both ends of the contrast spring 322 are further fixedly connected with a tension detection module 323, so that when the tightening spring 321 and the contrast spring 322 are respectively sleeved on both ends of the contact finger 31, the tightening force on the contact finger 31 is the same, the tension detection module 323 is electrically connected with the digital tube display, by arranging the tightening spring 321 and the contrast spring 322 having the same length, thickness and elastic coefficient, in the process of inserting and pulling the analog contact rod 2, the tightening spring 321 and the contrast spring 322 can perform the same stretching process, and the influence of the length of the tension detection module 323 on the total length of the spring, the elastic deformation of the tightening spring 321 and the elastic deformation of the contrast spring 322 should be consistent, so the attenuation of the tightening spring 321 and the attenuation of the contrast spring 322 should be consistent, and therefore, the tension state of the spring 32 can be visually observed through the value detected by the tension detection module 323, whether the attenuation occurs or not, and the determination of the final value has a reference meaning.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Cubical switchboard plum blossom touches and indicates pressure spring capability test device, including simulation contact pole (2) and the plum blossom that is used for simulation cubical switchboard contact to open and shut and touch and indicate (3), its characterized in that: still including being used for the installation the plum blossom touches a control by temperature change section of thick bamboo (1) that indicates (3), the inside intermediate position department of a control by temperature change section of thick bamboo (1) has cavity (101) that link up, the plum blossom touches and indicates (3) quantity to be a plurality of, and a plurality of the plum blossom touches and indicates (3) equidistance distribution on the inner wall of a control by temperature change section of thick bamboo (1), the plum blossom touches and indicates (3) to touch and establish including a plurality of that is the annular distribution touch and indicate (31) outside spring (32) that are used for tightening up, the inside fixed mounting who touches and indicates (31) has electric heat module (312), fixed mounting has on the outer wall of a control by temperature change section of thick bamboo (1) and is used for control, shows digital display temperature controller (4) of electric heat module (312) temperature, simulation touch pole (2) include with the plum blossom touches contact (21) and connecting rod (22) that indicate (3, the contact (21) with connecting rod (22) crisscross setting, and fixed connection between two liang, fixed mounting has on the lateral wall of contact (21) and is used for the test touch pressure sensor (211) of finger (31), the outer wall of temperature control section of thick bamboo (1) is installed and is used for showing pressure sensor (211) detects the digital display ware of numerical value, the digital display ware with the inside of digital display temperature controller (4) all is equipped with data storage module, the digital display ware with digital display temperature controller (4) all with external power source electric connection.

2. The switch cabinet plum blossom contact finger compression spring performance test device of claim 1, characterized in that: touch finger (31) with install sleeve (11) and slide bar (12) between a temperature control section of thick bamboo (1), sleeve (11) are fixed on the inner wall of a temperature control section of thick bamboo (1), slide bar (12) are fixed touch on the outer wall of finger (31), sleeve (11) with slide bar (12) sliding connection.

3. The switch cabinet plum blossom contact finger compression spring performance test device of claim 1, characterized in that: spring (32) are including tightening spring (321) and contrast spring (322), the outside one end of touching finger (31) has lifting piece (311), contrast spring (322) cover is located touch finger (31) outer wall is located the one end of lifting piece (311), tighten up spring (321) cover and locate the other end.

4. The switch cabinet plum blossom contact finger compression spring performance test device of claim 3, characterized in that: the length, thickness and elastic coefficient of the tightening spring (321) and the comparison spring (322) are the same.

5. The switch cabinet plum blossom contact finger compression spring performance test device of claim 4, characterized in that: and the two ends of the comparison spring (322) are also fixedly connected with tension detection modules (323) so that when the tightening spring (321) and the comparison spring (322) are respectively sleeved at the two ends of the contact finger (31), the tightening force on the contact finger (31) is the same.

6. The switch cabinet plum blossom contact finger compression spring performance test device of claim 5, characterized in that: the tension detection module (323) is electrically connected with the nixie tube displayer.