CN103217244B - Vibroshock pull or press force test instrument - Google Patents
Vibroshock pull or press force test instrument Download PDFInfo
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- CN103217244B CN103217244B CN201310098210.4A CN201310098210A CN103217244B CN 103217244 B CN103217244 B CN 103217244B CN 201310098210 A CN201310098210 A CN 201310098210A CN 103217244 B CN103217244 B CN 103217244B
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Abstract
The invention provides a kind of vibroshock pull or press force test instrument.It solve existing measuring equipment exist measurement data not comprehensively, to measure precision low, and do not possess the function improving Parameter statistical analysis.This vibroshock pull or press force test instrument comprises the bracing frame with operator's console, motor is installed in the below of operator's console, the output shaft of motor vertically runs through operator's console and drives connection for transmission assembly, the outer end of transmission component is movably connected on slide assemblies, slide assemblies is arranged tension and compression detecting position, the end location pull pressure sensor of tension and compression detecting position, pull pressure sensor connects amplifilter, A/D converter, microprocessor and host computer in turn, and wherein microprocessor is by driving circuit control linkage motor.Its detection method comprises pressure acquisition, conversion, judgement, storage, transmission and Electric Machine Control etc.The present invention possesses simple structure, reliable effect, and trace routine is reasonable in design, and detected parameters understands, is beneficial to and researchs and analyses further.
Description
Technical field
The invention belongs to field of mechanical technique, relate to a kind of detection for washing machine vibration absorber performance, particularly a kind of vibroshock pull or press force test instrument.
Background technology
Damping shock absorber in roller washing machine plays support washing machine steel ladle, and absorbs the effect of this steel ladle vibrations.The quality of its quality directly has influence on the shockproofness of washing machine, noise level and serviceable life.Therefore a kind of instrument detecting washing machine vibration absorber quality is designed particularly important.
Vibroshock measuring equipment of the prior art usually exist measurement data not comprehensively, to measure precision low, and do not possess the function improving Parameter statistical analysis, lacks the defects such as the technical support of background system process.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose a kind of pressure being measured vibroshock by sensor in real time, and linear process is done to measurement data, diagnose the vibroshock pull or press force test instrument of measured piece quality thus.
Object of the present invention realizes by following technical proposal: vibroshock pull or press force test instrument, comprise the bracing frame with operator's console, it is characterized in that, motor is installed in the below of described operator's console, the output shaft of described motor vertically runs through operator's console and drives connection for transmission assembly, the outer end of described transmission component is movably connected on slide assemblies, described slide assemblies is arranged tension and compression detecting position, the end location pull pressure sensor of described tension and compression detecting position, described pull pressure sensor connects amplifilter in turn, A/D converter, microprocessor and host computer, wherein microprocessor is by the above-mentioned motor of driving circuit control linkage.
In this vibroshock pull or press force test instrument, motor is specially AC motor, and it is as power source equipment.Operator's console is arranged in turn by front end to rear end and is established motor, transmission component and slide assemblies, and wherein motor installs below in operator's console and the head end position of connection for transmission assembly, transmission component and slide assemblies linearly in turn row be located at the upper table surface of operator's console.Pull pressure sensor, amplifilter, A/D converter, microprocessor and host computer form signal parameter process detection system.
In above-mentioned vibroshock pull or press force test instrument, described transmission component comprises the cam being solidly set on motor output shaft end, articulated linkage on the border of described cam, the hinged above-mentioned slide assemblies in outer end of described connecting rod.One end of connecting rod is hinged on the border body of cam, therefore when cam time rotational, connecting rod is moved in a circle around the cam center of circle by pin joint, and another hinged end of drivening rod does shift reciprocately motion thus.
In above-mentioned vibroshock pull or press force test instrument, described slide assemblies comprises the guide rail be fixedly arranged on operator's console, and described guide rail is connected with two take-up housings in slip, is above-mentioned tension and compression detecting position between described two take-up housings.
In above-mentioned vibroshock pull or press force test instrument, the described take-up housing being positioned at head end sets firmly Connection Block, the end of described Connection Block and above-mentioned connecting rod is in being hinged and connected, the described take-up housing being positioned at tail end installs above-mentioned pull pressure sensor, described tension and compression detecting position comprises the link that is connected of pull pressure sensor the inner, respectively on described link and Connection Block is vertically provided with joint pin.Two joint pins are arranged in the central line of guide rail extension, thus when connecting rod drives stretching or compression shock absorption device, realize pressure positive acting, to promote the detection degree of accuracy of vibroshock performance.
In above-mentioned vibroshock pull or press force test instrument, described in be positioned at tail end take-up housing end face set firmly locating rack, described pull pressure sensor is fixedly arranged on locating rack, and described locating rack forms fixing assembling by screw and above-mentioned guide rail.Be fixed assembling by locating rack and guide rail, the location synchronously realizing both take-up housings of pull pressure sensor and tail end is connected.
The detection method of vibroshock pull or press force test instrument, is characterized in that, comprise the following steps:
(1), by the two ends of tested vibroshock be located by connecting on two joint pins one by one, system electrification and microprocessor, after system initialization, control motor by driving circuit and open;
(2), the output shaft band moving cam of motor and connecting rod action, the slide block alternating translational of interlock head end slides thus, and then drive vibroshock tension and compression circulation running, pull pressure sensor synchronous acquisition, and output signal is transferred to A/D converter by amplifilter, analog signals is converted to digital quantity signal by A/D converter, and judges that pressure draws flex point;
(3), obtain after pressure draws flex point, draw flex point as circulation beginning flag to press, A/D converter according to 15ms unit interval circulation translation data and store, after storage data reach 40, data packing is sent to host computer by microprocessor;
(4), microprocessor controls motor cut out by driving circuit.
The detection method of this vibroshock pull or press force test instrument is measured the pressure of vibroshock in real time, and carry out amplifying, filtering, A/D conversion process, data after process are changed through numerical value, host computer is transferred to according to specified protocol by microprocessor (next bit computer) after packaging, and then by the software systems of host computer, data are processed, and form data form or graph curve, diagnose the quality of measured piece (vibroshock) thus.
In the detection method of above-mentioned vibroshock pull or press force test instrument, described pull pressure sensor, amplifilter, A/D converter and microprocessor are corresponding in turn to and are set to signal acquisition circuit, filtering and amplifying circuit, A/D change-over circuit and signal processing circuit.
In the detection method of above-mentioned vibroshock pull or press force test instrument, described microprocessor connects above-mentioned host computer by RS232 communication protocol.
In the detection method of above-mentioned vibroshock pull or press force test instrument, in described RS232 communication protocol, MAX232CPE chip is used to carry out level conversion.This is a kind of SCM Based pressure acquisition control system, comprises signal acquisition circuit, filtering and amplifying circuit, A/D change-over circuit, single-chip minimum system, RS232 communication protocol circuits, motor-drive circuit.
In the detection method of above-mentioned vibroshock pull or press force test instrument, comprise successively in the software systems of described host computer and log in administration module, data memory module, N secondary data form contrast module, the F that makes a round trip-S curve module, back and forth N F-N curve module, parameter setting module and print module.
Compared with prior art, this vibroshock pull or press force test instrument adopts the stable power-equipment of manipulation, precisely effective transmission, tension and compression structure, and then image data processing, and draws vibroshock performance judged result accurately; This vibroshock pull or press force test instrument possesses simple structure, reliable effect, work efficiency high simultaneously; It is reasonable in design that its detection method has step procedure, and detected parameters is very clear, is beneficial to and researchs and analyses further, for vibroshock provides the complete and pull or press force test embodiment of high-quality.
Accompanying drawing explanation
Fig. 1 is the perspective view of this vibroshock pull or press force test instrument.
Fig. 2 is the hardware principle of compositionality block diagram of this vibroshock pull or press force test instrument.
Fig. 3 is the step procedure block diagram of the detection method of this vibroshock pull or press force test instrument.
Fig. 4 is the circuit diagram of this vibroshock pull or press force test instrument.
In figure, 1, operator's console; 2, motor; 3, cam; 4, connecting rod; 5, guide rail; 6, take-up housing; 7, Connection Block; 8, locating rack; 9, screw; 10, pull pressure sensor; 11, link; 12, joint pin; 13, vibroshock.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As depicted in figs. 1 and 2, this vibroshock pull or press force test instrument comprises the bracing frame with operator's console 1, operator's console 1 is arranged in turn by front end to rear end and is established motor 2, transmission component and slide assemblies, wherein motor 2 is installed in the below of operator's console 1 and the head end position of connection for transmission assembly, and transmission component and slide assemblies linearly arrange the upper table surface being located at operator's console 1 in turn.
Motor 2 is specially AC motor, and it is as power source equipment.The output shaft of motor 2 vertically runs through operator's console 1 and drives connection for transmission assembly, the outer end of transmission component is movably connected on slide assemblies, slide assemblies is arranged tension and compression detecting position, the end location pull pressure sensor 10 of tension and compression detecting position, pull pressure sensor 10 connects amplifilter, A/D converter, microprocessor and host computer in turn, and wherein microprocessor is by driving circuit control linkage motor 2.
Transmission component comprises the cam 3 being solidly set on motor 2 output shaft end, the border body of cam 3 is hinged with a connecting rod 4.
Slide assemblies comprises the guide rail 5 be fixedly arranged on operator's console 1, guide rail 5 is connected with between two take-up housings, 6, two take-up housings 6 in slip and is tension and compression detecting position.The take-up housing 6 being positioned at head end sets firmly Connection Block 7, and the end of Connection Block 7 and connecting rod 4 is in being hinged and connected; Take-up housing 6 end face being positioned at tail end sets firmly locating rack 8, locating rack 8 is installed pull pressure sensor 10, and locating rack 8 forms fixing assembling by screw 9 and guide rail 5, and the take-up housing 6 of pull pressure sensor 10 and tail end forms positioning connection thus.
Tension and compression detecting position comprises the link 11 that pull pressure sensor 10 the inner is connected, this link 11 is provided with joint pin 12 with each hanging down on Connection Block 7, and two joint pins 12 are arranged in the central line of guide rail 5 extension, thus when connecting rod 4 drives stretching or compression shock absorption device 13, realize pressure positive acting, to promote the detection degree of accuracy of vibroshock 13 performance.
As shown in Figure 3, the effect according to the said equipment and structure connects, and the detection method of this vibroshock pull or press force test instrument comprises the following steps:
(1), by the two ends of tested vibroshock 13 be located by connecting on one by one on two joint pins 12, system electrification waits for the instruction of host computer in interruption, and microprocessor is after system initialization, controls motor 2 open by driving circuit.
(2), the output shaft band moving cam 3 of motor 2 and connecting rod 4 action, the slide block alternating translational of interlock head end slides thus, and then drive vibroshock 13 tension and compression circulation running, pull pressure sensor 10 synchronous acquisition, and output signal is transferred to A/D converter by amplifilter, analog signals is converted to digital quantity signal by A/D converter, and judges that pressure draws flex point.
The most significant digit of the digital quantity signal that judgement converts to is 1 or 0.If 1, represent that vibroshock 13 is in the process of drawing; If 0, represent that vibroshock 13 is in the process of pressure.The design becomes 1 with digital quantity signal most significant digit by 0, namely judges that pressure draws flex point.
(3), obtain after pressure draws flex point, draw flex point as circulation beginning flag to press, A/D converter according to 15ms unit interval circulation translation data and store, after storage data reach 40, data packing is sent to host computer by microprocessor.
(4), microprocessor cuts out by driving circuit control motor 2.
As shown in Figure 4, in this vibroshock pull or press force test instrument, pull pressure sensor 10, amplifilter, A/D converter and microprocessor are corresponding in turn to and are set to signal acquisition circuit, filtering and amplifying circuit, A/D change-over circuit and signal processing circuit.
Signal acquisition circuit selects 500NS type resistance-strain type pull pressure sensor 10.For pulling force and pressure, this sensor can the contrary voltage signal of output polarity, the pulling force of the design exports positive voltage, Output pressure negative voltage, the scope of output voltage is-20mv-+20mv, and sensitivity is 2mV/V, and synthesis precision is 0.02, there is output symmetry thus good, precision be high, the feature such as compact conformation.
The differential signal that pull pressure sensor 10 exports is connected with 2,3 pins of AD620 amplifilter.Wherein P1 is the connection terminal that amplifilter is connected with pull pressure sensor 10.AD620 amplifilter is the instrument amplifier of a high-precision and low-offset voltage and low offset drift, can amplify bipolar signal.Its inner three amplifier Differential Input Curve guide impeller adopting classics, effectively inhibit common mode interference.The indirect resistance R1 of 1 and 8 pins of AD620 amplifilter, for the control of gain amplifier.
Signal after amplification filtering process sends into 13 pins as the AD574 chip of A/D converter, and then converts analog signals to digital quantity signal.AD574 chip is 12 successive approximation A/D analog to digital converters, can switched bipolar signal.Wherein the digital quantity that converts to of positive voltage is from 100000000000 to 111111111111; The digital quantity that negative voltage transition becomes is from 000000000000 to 011111111111.The indirect potentiometer R3 of its interior 8 and 10 pin, the indirect potentiometer R4 of 8 and 12 pins, is respectively used to the adjustment at gain and zero point.
The signal transacting of microprocessor selects STC89C52 single-chip microcomputer.Y1, C7, C8 in it form the oscillatory circuit of single-chip microcomputer, and R5, R6, C6, S1 form the reset circuit of single-chip microcomputer, and realize hand-reset.21 pins of STC89C52 single-chip microcomputer are connected with 28 pins of AD574 chip, detect 21 pin states in real time, and when negative edge being detected, illustrate that A/D converter conversion is complete, then STC89C52 single-chip microcomputer receives the data of A/D converter, line linearity process of going forward side by side.
STC89C52 single-chip microcomputer is also by 22 pin pilot relay K1, thus the startup controlling motor 2B1 stops, and is motor-drive circuit.
Microprocessor connects host computer by RS232 communication protocol.Namely adopt RS232 communication protocol between STC89C52 single-chip microcomputer and host computer, the special MAX232CPE chip that uses carries out level conversion.9,10 pins of MAX232CPE chip are connected with 10,11 pins of STC89C52 single-chip microcomputer respectively, and 7,8 pins are connected with 2,3 pins of serial ports J1.C1, C2, C3, C4, C5 are 5 electric capacity be connected with MAX232CPE, for filtering and energy storage effect.Often measure a tension and compression circulation, data packing is sent to host computer, and its call duration time need be less than the time of A/D sample conversion, to prevent the mistake of Lou sampling and delay sampling.
Motor 2 rotating speed that the design uses is 100r/min, then motor 2 rotates a circle, and the time that namely tension and compression of tested vibroshock 13 are once used is 600ms.Require at least to sample 40 points in a tension and compression circulation, then sampling interval is the longest is 15ms.Computational analysis thus, this Configuration of baud rate is 57600.
Following operational module is comprised successively in the software systems of host computer:
1) administration module is logged in: facilitate equipment use personnel register, and prevent irrelevant personnel from entering system.
2) data memory module: host computer management software selects large-scale database, can store super amount test data, and then accomplishes power failure data hold function.
3) N secondary data form contrast module: setting measured piece to-and-fro movement number of times, can form data statistics form according to set point number, the peak-to-valley value of the data obtained in reflection set point number and mean value, the data and mark goes beyond the scope, meet testing requirement.
4) make a round trip F-S curve module: F-S curve that in display measured piece to-and-fro movement process, all measured data are formed in real time, diagnoses the situation of measured piece data variation in motion process thus.
5) reciprocal N F-N curve module: measured piece to-and-fro movement N time, forms F-N curve to the data of specified point, diagnoses the serviceable life of measured piece thus.
6) parameter setting module: according to measured piece characteristic, setting test parameter, makes this software have stronger adaptability.
7) print module: the data of needs or graph curve are printed, is convenient to check and read.
Other functions can increase according to modular form successively according to test request.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ operator's console 1 herein; Motor 2; Cam 3; Connecting rod 4; Guide rail 5; Take-up housing 6; Connection Block 7; Locating rack 8; Screw 9; Pull pressure sensor 10; Link 11; Joint pin 12; Term such as vibroshock 13 grade, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (2)
1. vibroshock pull or press force test instrument, comprise the bracing frame with operator's console, it is characterized in that, motor is installed in the below of described operator's console, described motor installs below in operator's console and the head end position of connection for transmission assembly, the output shaft of described motor vertically runs through operator's console and drives connection for transmission assembly, the outer end of described transmission component is movably connected on slide assemblies, described transmission component and slide assemblies linearly arrange the upper table surface being located at operator's console in turn, described slide assemblies is arranged tension and compression detecting position, the end location pull pressure sensor of described tension and compression detecting position, described pull pressure sensor connects amplifilter in turn, A/D converter, microprocessor and host computer, wherein microprocessor is by the above-mentioned motor of driving circuit control linkage, described transmission component comprises the cam being solidly set on motor output shaft end, articulated linkage on the border of described cam, the hinged above-mentioned slide assemblies in outer end of described connecting rod, described slide assemblies comprises the guide rail be fixedly arranged on operator's console, described guide rail is connected with two take-up housings in slip, be above-mentioned tension and compression detecting position between described two take-up housings, the described take-up housing being positioned at head end sets firmly Connection Block, the end of described Connection Block and above-mentioned connecting rod is in being hinged and connected, the described take-up housing being positioned at tail end installs above-mentioned pull pressure sensor, described tension and compression detecting position comprises the link that pull pressure sensor the inner is connected, on described link and Connection Block, each hanging down is provided with joint pin, two joint pins are arranged in the central line of guide rail extension.
2. vibroshock pull or press force test instrument according to claim 1, is characterized in that, the described take-up housing end face being positioned at tail end sets firmly locating rack, and described pull pressure sensor is fixedly arranged on locating rack, and described locating rack forms fixing assembling by screw and above-mentioned guide rail.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310098210.4A CN103217244B (en) | 2013-03-26 | 2013-03-26 | Vibroshock pull or press force test instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310098210.4A CN103217244B (en) | 2013-03-26 | 2013-03-26 | Vibroshock pull or press force test instrument |
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| CN103217244A CN103217244A (en) | 2013-07-24 |
| CN103217244B true CN103217244B (en) | 2015-11-18 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969866A (en) * | 2017-03-15 | 2017-07-21 | 江门星火减震器有限公司 | A kind of rear damper damping force checking device |
| CN106908182A (en) * | 2017-04-25 | 2017-06-30 | 无锡职业技术学院 | A kind of roller washing machine damper damping force Auto-Test System |
| CN108519227B (en) * | 2018-04-09 | 2019-11-05 | 柳州市仁仪汽车技术服务有限公司 | A kind of damper detection device |
| CN108692928B (en) * | 2018-04-09 | 2019-12-03 | 诸暨易和项目投资有限公司 | A kind of damper detection method |
| CN109115486B (en) * | 2018-10-24 | 2023-10-17 | 西安爱生技术集团有限公司 | Unmanned aerial vehicle engine oil gas shock absorber static pressure testing arrangement |
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| CN102721550A (en) * | 2012-07-12 | 2012-10-10 | 湖南师范大学 | Test device of automobile magnetorheological suspension system |
| CN102735486A (en) * | 2012-06-29 | 2012-10-17 | 湖南师范大学 | Device for testing indicator characteristic of magnetorheological damper |
| JP5063456B2 (en) * | 2008-04-09 | 2012-10-31 | 不二ラテックス株式会社 | Damper device |
| CN202661255U (en) * | 2012-05-29 | 2013-01-09 | 常州格林电力机械制造有限公司 | Dynamic test device of hydraulic damper |
| CN203310551U (en) * | 2013-03-26 | 2013-11-27 | 山东科技大学 | Measurement device for tension and pressure of damper |
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2013
- 2013-03-26 CN CN201310098210.4A patent/CN103217244B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5063456B2 (en) * | 2008-04-09 | 2012-10-31 | 不二ラテックス株式会社 | Damper device |
| CN202661255U (en) * | 2012-05-29 | 2013-01-09 | 常州格林电力机械制造有限公司 | Dynamic test device of hydraulic damper |
| CN102735486A (en) * | 2012-06-29 | 2012-10-17 | 湖南师范大学 | Device for testing indicator characteristic of magnetorheological damper |
| CN102721550A (en) * | 2012-07-12 | 2012-10-10 | 湖南师范大学 | Test device of automobile magnetorheological suspension system |
| CN203310551U (en) * | 2013-03-26 | 2013-11-27 | 山东科技大学 | Measurement device for tension and pressure of damper |
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