CN201945410U - Large-power electric appliance main-circuit socket connector contact terminal pressure measuring instrument - Google Patents
Large-power electric appliance main-circuit socket connector contact terminal pressure measuring instrument Download PDFInfo
- Publication number
- CN201945410U CN201945410U CN2011200222066U CN201120022206U CN201945410U CN 201945410 U CN201945410 U CN 201945410U CN 2011200222066 U CN2011200222066 U CN 2011200222066U CN 201120022206 U CN201120022206 U CN 201120022206U CN 201945410 U CN201945410 U CN 201945410U
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- electric appliance
- measuring instrument
- power electric
- connector contact
- major loop
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Abstract
The utility model relates to a measuring instrument of electric power engineering, in particular to a large-power electric appliance main-circuit socket connector contact terminal pressure measuring instrument, which is particularly suitable for measuring the pressure of a contact terminal of a main circuit socket connector in the electric power field, and is characterized by comprising a display device and a measuring head which can be inserted between two contact terminals of a movable socket connector, wherein the measuring head is provided with a pressure sensing device. The pressure measuring instrument has a simple structure, is convenient to use, can directly, rapidly and accurately display the measured data and can conveniently measure the pressure of the contact terminal of the large-power electric appliance main circuit socket connector, so the pressure value of the contact terminal of the movable socket connector is quantized.
Description
Technical field
The utility model relates to the surveying instrument of power engineering, is a kind of high-power electric appliance major loop connector contact pressure measuring instrument, and its contact pressure that is specially adapted to power domain main circuit connector is measured.
Background technology
Along with socioeconomic continuous development, the demand of high-power complete sets of electric switchgears and control devices equipment constantly increases, a large amount of major loop connectors that adopt in the complete sets of electric switchgears and control devices equipment, and this high-power electric current major loop connector mainly is made up of quiet plug-in unit and moving plug-in unit.Quiet plug-in unit is one to be had certain thickness copper current-carrying plate (general thickness is 5～6mm), and moving plug-in unit generally is made up of a pair of contact with certain contact pressure.This distance to contact is about 4.5～5.4mm under free state, about 90% of promptly quiet plug-in unit thickness.During work, quiet plug-in unit is inserted in the middle of moving two contacts of plug-in unit, and moving plug-in unit contact is apart from increase, under the effect of holddown spring pressure, form the good contact of dynamic/static contact, pressure is big more, it is good more to contact, just few more in the heating of connector when the electric current, thereby realizes excellent conductive performance.Too small as contact pressure, contact resistance increases, and the contact is overheated thereupon, the annealing of contact oxidation and holddown spring occurs, and this can cause main circuit contact again and degenerate, and so vicious cycle is burnt until contact.Certainly the excessive connector that also can cause of pressure inserts other problems such as difficulty, and therefore the measurement of contact pressure size and control are very important links to the quality that guarantees high-power major loop connector as can be seen, and contact pressure should be controlled in the suitable scope.But at present because of there not being the instrument of measuring contacts pressure, the manufacturer of high-power major loop connector does not all measure the pressure of connector contact in process of production.Power when now adopting the moving plug-in unit insertion of spring balance measurement on the industry and extracting static socket judges whether contact pressure is enough, and this method industry is referred to as " plug method ".The assessment of carrying out contact pressure with " plug method " is a size of judging contact pressure according to the size of contact engaging and separating force indirectly, because relation one to one between contact engaging and separating force and the contact pressure, this method is the true value that can not effectively not draw contact pressure.
Summary of the invention
The utility model has overcome shortcoming of the prior art, provide a kind of can be directly, fast, accurately digitally show, be convenient for measuring the instrument that high-power electric appliance major loop connector contact pressure is measured, easy to use, and accurately and reliably, can directly show measurement data, thereby the force value of plug-in unit contact is quantized.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
A kind of high-power electric appliance major loop connector contact pressure measuring instrument comprises display device and can insert the measuring head that moves between plug-in unit two contacts that this measuring head is provided with pressure sensor device.
Above-mentioned high-power electric appliance major loop connector contact pressure measuring instrument, described pressure sensor device comprises affixed bridge architecture pressure-sensing device and crane span structure.
Above-mentioned high-power electric appliance major loop connector contact pressure measuring instrument, described crane span structure is the bar-shaped trough shape, described bridge architecture pressure-sensing device is located in the bar-shaped trough.
Above-mentioned high-power electric appliance major loop connector contact pressure measuring instrument, described bar-shaped trough internal diameter width is than the big 0.1mm of bridge architecture pressure-sensing device.
Above-mentioned high-power electric appliance major loop connector contact pressure measuring instrument, described bridge architecture pressure-sensing device is inverted " mountain " shape, its bottom is two trench structures.
Above-mentioned high-power electric appliance major loop connector contact pressure measuring instrument, described trench structure bottom is provided with the Wien bridge circuit that 4 foil gauges are formed.
Above-mentioned high-power electric appliance major loop connector contact pressure measuring instrument, described foil gauge is 5k Ω.
Above-mentioned high-power electric appliance major loop connector contact pressure measuring instrument also comprises an output amplifier.
Above-mentioned high-power electric appliance major loop connector contact pressure measuring instrument also comprises hand drill shape housing, is provided with power supply in the handle of this hand drill shape housing, and described display device is located at this hand drill shape housing rear portion, and described measuring head is located at this hand drill shape housing front end.
Compared with prior art, the beneficial effects of the utility model are:
1, the utility model is simple in structure, can accurately measure the pressure size of high-power electric appliance major loop connector contact.
2, bar-shaped trough internal diameter width can be movable with the compressive region of guaranteeing the bridge middle body than the big 0.1mm of bridge architecture pressure-sensing device.
3, measurement result to be converted to newton be the digital displaying signal of unit to output amplifier, directly shows pressure reading on display device, and need not carry out other computing.
The portable structure that functions such as 4, measurement, demonstration and power supply power supply are integrated in one, use is easy to carry.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a cut-open view of the present utility model;
Fig. 2 is the A place enlarged drawing among Fig. 1;
Fig. 3 be among Fig. 2 B-B to cut-open view;
Fig. 4 is the upward view of bridge-type structural pressure sensitive element among Fig. 2;
Fig. 5 is user mode figure of the present utility model.
Embodiment
As shown in Figure 1, high-power electric appliance major loop connector contact pressure measuring instrument described in the utility model, comprise hand drill shape housing 1, be provided with power supply in the handle of this hand drill shape housing 1, in the present embodiment, power supply is a rechargeable battery 2, display device is located at this hand drill shape housing 1 rear portion, the measuring head 3 that can insert between moving plug-in unit two contacts is located at this hand drill shape housing 1 front end, measuring head 3 is provided with bridge architecture pressure-sensing device 31 rigidity, ultrathin and crane span structure 32, and the front portion of handle also is provided with switch 4.
In the present embodiment, display device is digital display module 5.
Shown in Fig. 2,3, the material selection 15-5PH of bridge architecture pressure-sensing device 31 and crane span structure 32 or 17-4PH stainless steel material, after shaping, through the special thermal treatment program, its elastic strength is more than 1000MPa, but this extra-thin bridge-type pressure-sensing device is reused more than 1,000,000 times still operate as normal.Crane span structure 32 is designed to the bar-shaped trough shape, and bridge architecture pressure-sensing device 31 is located in the bar-shaped trough, and crane span structure 32 internal diameter width must be wider than 0.1mm than bridge architecture pressure-sensing device 31, can be movable with the compressive region of guaranteeing the bridge middle body.
Bridge architecture pressure-sensing device 31 is inverted " mountain " shape, and its bottom is two trench structures, and its two ends all weld with argon ion with crane span structure 32, and (as Fig. 2 position a and position b) is as motionless part.The central authorities of bridge architecture pressure-sensing device 31 are movable part (the long rigidity compressive region of horizontal 8mm among Fig. 2), and the two ends of compressive region are stressed zone (long 6mm), and thickness is T, is generally 1～2mm (by the decision of testing pressure size, range is high more, and T is big more).
Consult Fig. 4,4 5k Ω foil gauges 6 are formed Wien bridge circuit, and it is located in two trench structures of bridge architecture pressure-sensing device 31, extracts peak signal, thereby improves signal to noise ratio (S/N ratio).4 5k Ω foil gauges 6 are divided into two pairs of two stressed zones that are individually fixed on the bridge architecture pressure-sensing device 31, every foil gauge 6 places the two ends of each stressed zone respectively but not the middle part, stressed zone, and foil gauge 6 is connected with digital display module 5 by lead, output 4～20mA amplifying circuit 7.
Consult Fig. 5, the gross thickness H of bridge architecture pressure-sensing device 31 and crane span structure 32 is 4～6mm, the static contact consistency of thickness of this thickness and high-power electric appliance major loop connector, its width is 6～10mm, moving contact width on high-power electric appliance major loop connector is decided, thereby guarantee the measurement result authenticity, the pressure of tested contact should be added in O point place in bridge architecture pressure-sensing device 31 bridges.
Using method of the present utility model:
Measuring head 3 of the present utility model is inserted the moving plug-in unit of main circuit (contact clamps O point position in bridge-type structural pressure sensitive element 31 bridges), connect switch 4, bridge architecture pressure-sensing device 31 produces mechanical deformation, this deformation is converted to electric signal by Wien bridge circuit, and it is the digital displaying signal of unit that electric signal changes into newton through output amplifier 7 and digital display module 5 again.
The utility model is not limited to above-mentioned embodiment, if various changes of the present utility model or distortion are not broken away from spirit and scope of the present utility model, if these changes and distortion belong within claim of the present utility model and the equivalent technologies scope, then the utility model also is intended to comprise these changes and distortion.
Claims (9)
1. high-power electric appliance major loop connector contact pressure measuring instrument is characterized in that: comprise display device and can insert measuring head between moving plug-in unit two contacts, this measuring head is provided with pressure sensor device.
2. high-power electric appliance major loop connector contact pressure measuring instrument according to claim 1, it is characterized in that: described pressure sensor device comprises affixed bridge architecture pressure-sensing device and crane span structure.
3. high-power electric appliance major loop connector contact pressure measuring instrument according to claim 2, it is characterized in that: described crane span structure is the bar-shaped trough shape, described bridge architecture pressure-sensing device is located in the bar-shaped trough.
4. high-power electric appliance major loop connector contact pressure measuring instrument according to claim 3, it is characterized in that: described bar-shaped trough internal diameter width is than the big 0.1mm of bridge architecture pressure-sensing device.
5. according to each described high-power electric appliance major loop connector contact pressure measuring instrument of claim 2 to 4, it is characterized in that: described bridge architecture pressure-sensing device is inverted " mountain " shape, and its bottom is two trench structures.
6. high-power electric appliance major loop connector contact pressure measuring instrument according to claim 5 is characterized in that: described trench structure bottom is provided with the Wien bridge circuit that 4 foil gauges are formed.
7. high-power electric appliance major loop connector contact pressure measuring instrument according to claim 6, it is characterized in that: described foil gauge is 5k Ω.
8. high-power electric appliance major loop connector contact pressure measuring instrument according to claim 1 is characterized in that: also comprise an output amplifier.
9. high-power electric appliance major loop connector contact pressure measuring instrument according to claim 1, it is characterized in that: also comprise hand drill shape housing, be provided with power supply in the handle of this hand drill shape housing, described display device is located at this hand drill shape housing rear portion, and described measuring head is located at this hand drill shape housing front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200222066U CN201945410U (en) | 2011-01-24 | 2011-01-24 | Large-power electric appliance main-circuit socket connector contact terminal pressure measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200222066U CN201945410U (en) | 2011-01-24 | 2011-01-24 | Large-power electric appliance main-circuit socket connector contact terminal pressure measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201945410U true CN201945410U (en) | 2011-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200222066U Expired - Lifetime CN201945410U (en) | 2011-01-24 | 2011-01-24 | Large-power electric appliance main-circuit socket connector contact terminal pressure measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201945410U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128695A (en) * | 2011-01-24 | 2011-07-20 | 广州森纳士仪器有限公司 | Contact pressure measuring instrument for high-power electric appliance main loop connector |
| CN108918010A (en) * | 2018-09-11 | 2018-11-30 | 曹晋 | One kind being seated part detection device and method |
-
2011
- 2011-01-24 CN CN2011200222066U patent/CN201945410U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128695A (en) * | 2011-01-24 | 2011-07-20 | 广州森纳士仪器有限公司 | Contact pressure measuring instrument for high-power electric appliance main loop connector |
| CN102128695B (en) * | 2011-01-24 | 2016-01-27 | 广州森纳士仪器有限公司 | Contact pressure measuring instrument for high-power electric appliance main loop connector |
| CN108918010A (en) * | 2018-09-11 | 2018-11-30 | 曹晋 | One kind being seated part detection device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110824 Effective date of abandoning: 20160127 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |