CN2238176Y - Electronic electric point power measuring cranking bar - Google Patents
Electronic electric point power measuring cranking bar Download PDFInfo
- Publication number
- CN2238176Y CN2238176Y CN 94231581 CN94231581U CN2238176Y CN 2238176 Y CN2238176 Y CN 2238176Y CN 94231581 CN94231581 CN 94231581 CN 94231581 U CN94231581 U CN 94231581U CN 2238176 Y CN2238176 Y CN 2238176Y
- Authority
- CN
- China
- Prior art keywords
- crank
- cranking bar
- bar
- peak
- holding circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model relates to an electronic electric point switch power measuring cranking bar, belonging to a specific tool for measuring the closing force of railway switches, comprising a cranking bar rod, a cranking bar board, a cranking bar, a handle, a battery, a sensor and a signal processing device. The utility model is characterized in that signal processing is completed by an electronic circuit which is composed of an amplifier, a transfer switch, a peak value retainer, an A/D transducer and a digital display; an electric bridge is composed of four resistance strain gages which are attached to the stepwise cranking bar rod at the site with a minor diameter; an electric apparatus box is fixed on the cranking bar board. The power measuring cranking bar which is provided with a peak value retaining circuit has the advantages of simple structure, convenient operation, high measuring precision, convenient operation, convenient operation, easy debugging and convenient reading.
Description
The utility model relates to a kind of testing tool of mechanical characteristics of railway switch, is used for the electric switch machine dynamometry crank of the mensuration of railroad switch point closure power.
The mechanical characteristics of motor-operated switch mainly refers to the conversion resistance force and the closely connected power of motor-operated switch.The size of these two kinds of power directly influences the normal use of motor-operated switch.Owing to be subjected to multiple influences such as mounting turnout quality and environmental factor, these two kinds of power need often test and adjust.
At present the test side to the holding property of machinery of motor-operated switch mainly contains two kinds: the track switch device for measuring force that 1, uses the development of Chinese railway science institute, it is made up of force transducer and two-wire self-registering instrument, can accurately measure the power that motor-operated switch is exported in switching process.But this apparatus structure complexity, rank lattice costliness, and when test, need to replace the 22mm pin of throw rod with sensor, can only carry out in the no train passage period crack time again, there are test difficulty and safety hazard, so fail to apply, two, with the moving track switch of hand crank plate, the degree of exerting oneself according to hand, estimate the conversion resistance force and the closely connected power of track switch by rule of thumb, test result is very inaccurate, in addition, and in recent years, the Decree of Patent Office of China several mechanical type electric switch machine dynamometry cranks, as CN2111236U; Its transducer sensitivity of CN2172864Y mechanical type dynamometry crank has certain discreteness, and adjusting is difficult, survey precision is lower.
In view of above-mentioned technical disadvantages and deficiency, the purpose of this utility model provides a kind of electronic type electric switch machine dynamometry crank, and it can make things convenient for and measure the conversion resistance force and the closely connected power of motor-operated switch exactly.
The purpose of this utility model is achieved in that it comprises crank bar, crank plate, handle, sensor and electrical equipment box and battery supply, adopt resistance strain gauge as sensor, with the measurement signal of electronic circuit processes sensor output, show result of a measurement with digital form.Specifically make power supply with dry storage battery, 4 resistance strain gauges are attached to form an electric bridge on the crank bar, the measurement signal of electric bridge output is through electronic circuit amplification, change-over swith commutation, peak-holding circuit and A/D converter, with the numeric display observed reading.
The crank bar is the solid steel pole of staged that a diameter does not wait, and diameter minimum outer diameter is the sensitivity that one section adhering resistance strain gage diameter helps improving sensor for a short time on it.The axis of sensitive grid and crank bar is 45.Resistance strain gauge is pasted for adding a protection sleeve.
The electrical equipment box that electronic circuit board is installed is fixed on the crank bar, with the integral body of a compactness of crank formation.
Peak-holding circuit is in order to write down the maxim of power in the measurement process, also for convenient reading, because when stopping to shake, may cannot see LCDs.
Commutation is carried out by change-over swith.Signal of sensor have just have negative, through the commutation make the input peak-holding circuit signal on the occasion of, like this, can simplify the peak-holding circuit circuit, reduce the volume of electrical equipment box.
Compared with prior art the utility model is finished closely connected power measurement in movable railway track switch, uses very convenient; Because adopt Eltec to handle measurement signal, debugging is easy, reading is directly perceived, and it is higher to measure the feelings degree; Crank and instrument become one, and compact conformation is easy to carry; Has the peak-holding circuit circuit, convenient reading; Cost is lower.
Fig. 1 is the constructional drawing of the utility model electronic type electric switch machine dynamometry crank.Among the figure:
1--crank bar, the 2--resistance strain gauge, the 3--protection sleeve, 4,--crank plate, 5--electrical equipment box, 6--handle.
Below in conjunction with accompanying drawing the utility model embodiment is described specifically.
As shown in drawings, this dynamometry crank comprises the crank bar (1) of spring steel, there is one section diameter at the rear portion of bar less than all the other bar segmentations, this diameter is 8～12mm, post the resistance strain gauge (2) of 4 800～1000 Ω on it and form an electric bridge, the sensitive grid of resistance strain gauge (2) and crank rod axis angle at 45.When shaking handle (6), crank bar (1) is subjected to twisting force, and this moment, electric bridge promptly had signal output.Resistance strain gauge is equipped with ordinary steel protection sleeve (3) outward.
Fig. 2 is the electronic circuit schematic diagram that the utility model proposes.
Among the figure:
The E--power supply, Rx--sensor, G--amplifier, B--peak-holding circuit, K
1--change-over swith, K
2--reset switch, A/D--mould/conv, P--digital display screen.
Power supply E is a 9V dry type battery.The electric bridge (Rx) of 4 800～1000 Ω resistance strain gauge compositions is by constant current source power supply, and the output signal of electric bridge (Rx) is amplified by amplifier (G), and amplifying circuit (G) is by operational amplifier A
1Form difference input, the amplifier of single-ended output, change-over swith (K with resistance network
1) by the direction conversion of multitool throw switch realization amplifier (G) output voltage, peak-holding circuit comprises the operational amplifier A of high input impedance
2, A
3, diode D and capacitor C, can keep maximum E input value, when with change-over swith (K
1) when cooperating, just can keep forward and reverse output peak voltage, can simplify circuit like this, reduce volume.K
2Reset switch works to remove retention value, and A/D converter (A/D) is 3 half special-purpose integrated, can convert the analog quantity of peak-holding circuit output to digital quantity, shows observed reading by LCDs (P) at last.
Claims (3)
1, a kind of electronic type electric switch machine dynamometry crank, it comprises crank bar, crank plate, handle, battery supply, sensor and signal processor unit, it is characterized in that the electronic circuit that said signal conditioning is made up of amplifier, change-over swith, peak-holding circuit, A/D converter and digital display finishes, the crank bar is the stepped stem that a diameter does not wait, resistance strain gauge is attached to the minor diameter place of crank bar, and the electrical equipment box is fixed on the crank plate.
2, by the described dynamometry crank of claim 1, the external diameter that it is characterized in that strain gage bearing crank bar is 8～12mm.
3, by the described dynamometry crank of claim 1, it is characterized in that peak-holding circuit is unidirectional peak-holding circuit, finishes positive and negative peak-holding circuit jointly with pole changer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94231581 CN2238176Y (en) | 1994-12-19 | 1994-12-19 | Electronic electric point power measuring cranking bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94231581 CN2238176Y (en) | 1994-12-19 | 1994-12-19 | Electronic electric point power measuring cranking bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2238176Y true CN2238176Y (en) | 1996-10-23 |
Family
ID=33843389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94231581 Expired - Fee Related CN2238176Y (en) | 1994-12-19 | 1994-12-19 | Electronic electric point power measuring cranking bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2238176Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735379A (en) * | 2012-07-02 | 2012-10-17 | 南京泽荣自动化系统有限责任公司 | Communication type tonnage detecting module |
| CN110411329A (en) * | 2019-07-30 | 2019-11-05 | 广州中铁信息工程有限公司 | Track switch, switch closure detection system and method |
| CN110497936A (en) * | 2019-08-30 | 2019-11-26 | 郑州铁路职业技术学院 | A kind of point machine indication rod Fiducial signal processing circuit |
-
1994
- 1994-12-19 CN CN 94231581 patent/CN2238176Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735379A (en) * | 2012-07-02 | 2012-10-17 | 南京泽荣自动化系统有限责任公司 | Communication type tonnage detecting module |
| CN110411329A (en) * | 2019-07-30 | 2019-11-05 | 广州中铁信息工程有限公司 | Track switch, switch closure detection system and method |
| CN110411329B (en) * | 2019-07-30 | 2024-05-03 | 广州中铁信息工程有限公司 | Switch and switch close contact detection system and method |
| CN110497936A (en) * | 2019-08-30 | 2019-11-26 | 郑州铁路职业技术学院 | A kind of point machine indication rod Fiducial signal processing circuit |
| CN110497936B (en) * | 2019-08-30 | 2021-04-02 | 郑州铁路职业技术学院 | Signal processing circuit for indicating rod notch of switch machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Liu Yujie Document name: payment instructions |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |