CN207502614U - A kind of positive-pressure type contact resistance measuring device - Google Patents
A kind of positive-pressure type contact resistance measuring device Download PDFInfo
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- CN207502614U CN207502614U CN201721711161.7U CN201721711161U CN207502614U CN 207502614 U CN207502614 U CN 207502614U CN 201721711161 U CN201721711161 U CN 201721711161U CN 207502614 U CN207502614 U CN 207502614U
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- contact
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Abstract
A kind of positive-pressure type contact resistance measuring device, platform is crimped including contact, DC source, digital multimeter, pressure sensor display instrument, wherein described contact crimping platform is used to support contact sample to be measured and pressurizes to it, the DC power supply is used to provide electric current to contact sample to be measured, the digital multimeter is used to measure the potential difference of the contact portion of the contact sample to be measured, the pressure sensor display instrument is used for the contact value of contact sample to be measured described in real-time display, the contact crimping platform includes main supporting structure, contact crimping structure；The contact crimping structure is supported on the medium position of main supporting structure.The utility model can provide contact sample to be measured measuring contact resistance under specified pressure.The contact resistance value of accurate test contact sample according to contact use environment, can be facilitated.It disclosure satisfy that multiple contact sample parallel connection tests.
Description
Technical field
The utility model is related to a kind of electric resistance measuring apparatus, measure and fill more particularly, to a kind of positive-pressure type contact resistance
It puts.
Background technology
In the high energy consumptions industry such as metallurgy, electrolytic aluminium, breaker and its mating disconnecting switch are that the electrical of wherein key sets
It is standby.And in breaker and disconnecting switch, contact is particularly important component, and in the application environment of high energy consumption, the contact of contact
Position is the position being easily damaged very much.A critically important parameter for investigating contact performance is exactly the contact resistance of contact, is connect
Resistance of getting an electric shock is small and stablizes, and the volume of switch is smaller, and performance is more stable.The contact resistance of contact often m Ω even μ Ω magnitudes,
And its influence factor has very much, it is difficult to be accurately worth by simulation calculation, it is past in some application environments of less demanding
Toward can only rule of thumb rough estimate contact resistance size.But in the application environment of high current super-large current, switch touches
The contact resistance size of head must have enough precision, so as to ensure the stability of entire breaker or disconnecting switch.At present, it connects
Tactile electric resistance measuring apparatus is generally Lab Products, serves theoretical research, and measurement process is investigated cumbersome very much, is not suitable for reality
Switch contact contact resistance test in the application of border.Meanwhile the structure of contact terminals such as heavy current disconnecting switches are generally multiple contacts simultaneously
Connection, existing contact resistance test platform are generally difficult to measure the situation of multiple contact parallel connection.
Utility model content
Cumbersome in order to solve contact resistance test, the technological difficulties such as multiple contact parallel connection measurement, the utility model provides
A kind of positive-pressure type contact resistance measuring device crimps platform, DC source, digital multimeter, pressure sensing including contact
Device display instrument, wherein contact crimping platform is used to support contact sample to be measured and pressurizes to it, the direct current
Source is used to provide electric current to contact sample to be measured, and the digital multimeter is used to measure the contact portion of the contact sample to be measured
Potential difference, the pressure sensor display instrument be used for contact sample to be measured described in real-time display contact value, it is described
Contact crimping platform includes main supporting structure, contact crimping structure；The main supporting structure includes substrate, and the surface is led to
It crosses the second montant and is connected with support plate, support plate connects top plate by the first montant；The contact crimping structure includes driving screw,
It is fixedly connected above the driving screw with force application rod, the driving screw and the tapped through hole of the roof center are connected, institute
It states and is crimped below driving screw by inside screw trepanning with the pressure transmission spring with center-pole, the pressure transmission spring lower section and pressure transmission ball
Bearing crimps, and positive pressure is combined with pressure below pressure sensor upper surface, the pressure sensor below the pressure transmission ball bearing
Force snesor pedestal, the pressure sensor pedestal positive pressure is in replaceable static contact upper surface, the replaceable static contact and institute
Contact sample crimping to be measured is stated, the contact sample to be measured is socketed with pressure-bearing spring, and the pressure-bearing spring positive pressure is interchangeable
On insulation bearing plate, the insulation bearing plate positive pressure is on support plate center.
Further, the outer surface of the driving screw has the screw thread coordinated with the roof center threaded hole, the master
Screw rod lower inner has the internal openings coordinated with the pressure transmission spring.
Further, the replaceable static contact lower surface is smooth contact surface, in the replaceable static contact side
Heart positional symmetry is disposed with the interface of electrical connection.
Further, the interchangeable insulation support plate, which is bolted, is fixed on the support plate upper surface, institute
State have among support plate can hold the contact sample to be measured by through-hole, number of openings is identical with contact sample size.
Further, the replaceable static contact has electroplated layer.
The advantageous effect that the utility model reaches is：
1st, the contact resistance value of accurate test contact sample according to contact use environment, can be facilitated；
2nd, multiple contact sample parallel connection tests be disclosure satisfy that.
Description of the drawings：
Fig. 1 is the instrumentation plan of the utility model；
Fig. 2 is the contact crimping platform structure schematic diagram of the use of the new type；
Wherein：1- contacts crimp platform, 2- DC sources, 3- digital multimeter, 4- pressure sensor display instruments, 1.1- master
Screw rod, 1.2- force application rods, the first montants of 1.3-, 1.4- support plates, 1.5- pressure transmission springs, 1.6- pressure transmission ball bearings, 1.7- pressure
Sensor, 1.8 pressure sensor pedestals, the replaceable static contacts of 1.9-, 1.10- contact samples to be measured, 1.11- pressure-bearing springs,
1.12- insulation bearing plates, 1.13- support plates, the second montants of 1.14-, 1.15- substrates.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention is further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.In addition, institute in the various embodiments of the present invention described below
The technical characteristic being related to can be combined with each other as long as they do not conflict with each other.
As shown in Figure 1, the positive-pressure type contact resistance measuring device of the utility model, crimps platform 1, directly including contact
Stream source 2, digital multimeter 3, pressure sensor display instrument 4；Contact crimping platform includes main supporting structure, contact crimping knot
Structure；Main supporting structure includes top plate 1.3, the first montant 1.4, support plate 1.13, the second montant 1.14, substrate 1.15；Contact pressure
In binding structure, 1.1 top of driving screw is fixedly connected with force application rod 1.2, the screw thread of 1.1 outer surface of driving screw and 1.3 center of top plate
Through-hole is connected, and applies torsional moment to force application rod, driving screw is axially moved along screw rod；Pass through inside screw below driving screw
Trepanning is crimped with the pressure transmission spring 1.5 with center-pole, and when screw rod is axially moved, pressure transmission spring keeps different size of decrement；
It is crimped below pressure transmission spring with pressure transmission ball bearing 1.6, positive pressure is in 1.7 upper surface of pressure sensor, pressure below pressure transmission ball bearing
The pressure sensor pedestal 1.8 of insulation is combined with below sensor, pressure transmission bearing ensures that pressure sensor stress is perpendicular to it
The normal pressure of upper surface ensures the accuracy of pressure sensor measurements；Pressure sensor pedestal positive pressure is in replaceable static contact
1.9 upper surfaces, replaceable static contact are crimped with test contact sample 1.10, and contact sample to be measured is socketed with pressure-bearing spring 1.11,
Pressure-bearing spring positive pressure is on interchangeable insulation bearing plate 1.12, when pressure-bearing spring can ensure that multiple contact parallel connection measures, contact
Contact is uniform；Insulation bearing plate positive pressure is at 1.13 center of support plate.
1.5 center of pressure transmission spring is combined with the cylindrical swage of certain length, it is therefore an objective to limit driving screw in an axial direction
The move distance limit down limits the limit of pressure loading, ensures integrally-built safety.
The pressure sensor pedestal 1.8 and insulation bearing plate 1.12 are insulating materials, it is therefore an objective to ensure contact conduction
Path it is unique, prevent from leaking electricity.
1.13 centre of support plate is through-hole, it is therefore an objective to ensure that contact test sample, can be along axis when being pressurized
To movement.
The replaceable static contact 1.9 is designed with and stationary digital multimeter is facilitated to measure line close to the position of contact surface
Threaded hole.
The contact sample 1.10 needs to ensure that contact surface is consistent with actual use, and design is needed to connect below contact sample
The electrical connector of DC source output line facilitates the connection of DC source output line.
Hereinafter, by taking typical contact sample test process as an example, to illustrate the principle of this test device.
Before measurement process starts, driving screw 1.1 is rotated by force application rod 1.2, is that entire contact crimping platform is in and puts
Loose state.DC source output line one end of DC source 2 is connected at the electric connecting joint of replaceable static contact 1.9, the other end
It is connect with the electrical connector of 1.10 lower section of contact sample to be measured.Digital multimeter 3 measures line one end and connects with replaceable static contact 1.9
It connects, the other end is connect with contact sample 1.10 to be measured, and link position reduces bulk resistor to the greatest extent to measurement result close to contact surface
It influences.Pressure sensor display instrument 4 is opened, rotation driving screw 1.1 pressurizes, until the numerical value of pressure sensor display instrument 4
Reach test pressure requirement, keep this state.Digital multimeter 3 is opened, is set as voltage measuring mode, records initial zero
V0.It opens DC source 2 to switch, 2 output current value of setting DC source is required parameter I, records the display of digital multimeter
Value V1.The measurement result of contact resistance is Rc=(V1-V0)/I。
Although it has been combined related embodiment the utility model is described in detail, for people in the art
For member, that is done in the case of without departing substantially from the spirit of the present invention and essence respectively makes an amendment, replaces and deformation, each falls within this
Among the protection domain of utility model.
Claims (5)
1. a kind of positive-pressure type contact resistance measuring device crimps platform, DC source, digital multimeter, pressure including contact
Sensor display instrument, wherein contact crimping platform is used to support contact sample to be measured and pressurizes to it, it is described straight
Stream source is used to provide electric current to contact sample to be measured, and the digital multimeter is used to measure the contact site of the contact sample to be measured
The potential difference divided, the pressure sensor display instrument are used for the contact value of contact sample to be measured described in real-time display,
It is characterized in that：The contact crimping platform includes main supporting structure, contact crimping structure；The main supporting structure includes substrate,
The surface is connected with support plate by the second montant, and support plate connects top plate by the first montant；The contact crimping
Structure includes driving screw, is fixedly connected above the driving screw with force application rod, the driving screw and the screw thread of the roof center
Through-hole is connected, and is crimped below the driving screw by inside screw trepanning with the pressure transmission spring with center-pole, the pressure transmission
It is crimped below spring with pressure transmission ball bearing, positive pressure is passed in pressure sensor upper surface, the pressure below the pressure transmission ball bearing
It is combined with pressure sensor pedestal below sensor, the pressure sensor pedestal positive pressure is described in replaceable static contact upper surface
Replaceable static contact is crimped with the contact sample to be measured, and the contact sample to be measured is socketed with pressure-bearing spring, the pressure-bearing bullet
Spring positive pressure is on interchangeable insulation bearing plate, and the insulation bearing plate positive pressure is on support plate center.
A kind of 2. positive-pressure type contact resistance measuring device according to claim 1, which is characterized in that the driving screw
Outer surface there is the screw thread that coordinate with the roof center threaded hole, the driving screw lower inner with and the pressure transmission bullet
The internal openings of spring cooperation.
3. a kind of positive-pressure type contact resistance measuring device according to claim 2, which is characterized in that described replaceable
Static contact lower surface is smooth contact surface, and the replaceable static contact side center is arranged symmetrically connecing for electrical connection
Mouthful.
4. a kind of positive-pressure type contact resistance measuring device according to claim 3, which is characterized in that described replaceable
Insulation support plate be bolted and be fixed on the support plate upper surface, have among the support plate can hold it is described to be measured
Contact sample by through-hole, number of openings is identical with contact sample size.
5. a kind of positive-pressure type contact resistance measuring device according to claim 4, which is characterized in that described replaceable
Static contact has electroplated layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721711161.7U CN207502614U (en) | 2017-12-11 | 2017-12-11 | A kind of positive-pressure type contact resistance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721711161.7U CN207502614U (en) | 2017-12-11 | 2017-12-11 | A kind of positive-pressure type contact resistance measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207502614U true CN207502614U (en) | 2018-06-15 |
Family
ID=62508608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721711161.7U Expired - Fee Related CN207502614U (en) | 2017-12-11 | 2017-12-11 | A kind of positive-pressure type contact resistance measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207502614U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514901A (en) * | 2019-09-03 | 2019-11-29 | 福达合金材料股份有限公司 | Welded type electrical contact member contact resistance device for quick testing and its test method |
| CN110609317A (en) * | 2019-09-18 | 2019-12-24 | 东北大学 | Seismic detector auxiliary fixing device suitable for open-air iron ore stope |
| CN111693844A (en) * | 2020-04-22 | 2020-09-22 | 全球能源互联网研究院有限公司 | Test device and test method for pressure-bonding type semiconductor device, and electronic apparatus |
| CN115128349A (en) * | 2022-07-04 | 2022-09-30 | 河北工业大学 | Contact resistance measuring device under combined action of temperature and pressure |
-
2017
- 2017-12-11 CN CN201721711161.7U patent/CN207502614U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514901A (en) * | 2019-09-03 | 2019-11-29 | 福达合金材料股份有限公司 | Welded type electrical contact member contact resistance device for quick testing and its test method |
| CN110609317A (en) * | 2019-09-18 | 2019-12-24 | 东北大学 | Seismic detector auxiliary fixing device suitable for open-air iron ore stope |
| CN111693844A (en) * | 2020-04-22 | 2020-09-22 | 全球能源互联网研究院有限公司 | Test device and test method for pressure-bonding type semiconductor device, and electronic apparatus |
| CN115128349A (en) * | 2022-07-04 | 2022-09-30 | 河北工业大学 | Contact resistance measuring device under combined action of temperature and pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180615 Termination date: 20211211 |