CN101776506A - Calibrating and loading bench of large multi-dimensional force transducer - Google Patents
Calibrating and loading bench of large multi-dimensional force transducer Download PDFInfo
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Abstract
The invention discloses a calibrating and loading bench of a large multi-dimensional force transducer. The loading bench comprises an upper cross frame (6), a loading bench column (7), a lower cross frame (8), a multi-dimensional force transducer fixed support (9), loading units and loading blocks (5), wherein each loading unit comprises a loading frame (1), a loading hydraulic cylinder (2), a one-dimensional tension-pressure transducer (3) and a tension bar (4). By combining the different installation positions of the two loading units and the connection position of the tension bars (4) and the loading blocks (5), the calibration and the loading of the multi-dimensional force transducer can be realized. Compared with the prior art, the invention has the advantages of simple and compact structure, large range for calibrating and loading the force and high loading accuracy. Besides, by regulating the pressure of a hydraulic system, the invention can easily realize the continuous adjustment of the loaded force and the automatic and dynamic loading of the calibrated force, thereby being especially applicable to the static and dynamic calibration and loading of the large multi-dimensional force transducer.
Description
Technical field
The present invention relates to a kind of multi-dimension force sensor calibrating and loading bench field, particularly relate to and be applicable in this field that large multi-dimensional force transducer is quiet, the charger of dynamic calibration.
Background technology
After the sensor body structure machines, load calibration experiment, to determine the input/output relation of sensor.In occupation of important status, the height of loading accuracy has directly determined the grade of sensor measurement precision to the loading caliberating device during sensor design.For the one-dimensional force transducer, load to demarcate and generally on the calibration experiment machine, carry out, load the very perfect and maturation of calibration technique, and formulated corresponding national standards.And load demarcation for multi-dimension force sensor, and also not having to improve can be for reference with unified standard, and at present domestic and international multi-dimension force sensor research unit is after developing multi-dimension force sensor substantially, develops corresponding multidimensional power again and loads caliberating device.
Multi-dimension force sensor demarcation power loads at present, adopts two kinds of load modes of dynamometry ring type and counterweight formula mostly.Wherein the dynamometry ring type load to adopt the push rod mode, reads loading force by proving ring, is delivered on the force transducer by loading cap then, and this load mode can apply bigger loading force, but reading accuracy, to load resolution all lower.Advantages such as it is to adopt counterweight that loaded with standard power is provided that the counterweight formula is demarcated, and it is high to have the stability of demarcation, easy to operate, in, in a small amount use in the demarcation of journey multi-dimension force sensor comparatively general.But if above-mentioned two kinds of load modes are applied to the multidimensional demarcation power loading of large-scale particularly tonne multi-dimension force sensor, then be faced with big difficulty: in the large-scale six-dimension force sensor calibration loading procedure, need all can apply wide range load in 20 directions of sensor, adopt the loading bench of above-mentioned dual mode design, structural volume is bigger, bring big labour intensity not only for the on-site proving experimenter, and can not realize substantially for loading, more be difficult to realize six-dimension force sensor is applied definite dynamic load than large-tonnage power.Demarcate in order to realize that large multi-dimensional force transducer loads, some solutions have been proposed at present: as the disclosed patented technology of Chinese patent CN101226095A, its principle is to load demarcation with lifting jack, having solved wide range power loads, can not realize continuous unloading but power loads in the calibration process, load automatically and dynamic calibration.Another can provide the loading bench of multidimensional loading force to be disclosed by Chinese patent CN1727861A, this structure has realized that a plurality of directions of sensor load, but it is bigger equally also to exist the loading bench structural volume, can not load automatically and problem such as dynamic load loading.Chinese patent ZL200810020512.9 discloses a kind of six-dimension force sensor calibration device, be applicable to the caliberating device of wide range six-dimension force sensor, but can not realize unloading continuously in the calibration process, Chinese patent ZL200510050834.4 discloses a kind of stepless lifting type six dimension force sensor caliberating device, Chinese patent ZL200510050822.1 discloses a kind of device for calibrating parallel force transducer in six dimensions, gantry type frame all adopts rope, reductor comes imposed load to load, have simple in structure, advantages such as low cost of manufacture, but be difficult for realizing that moment and large-tonnage load thereof load.
In recent years, along with large-scale six-dimension force sensor is tested at the aeromotor vector, the continuous expansion of applications such as wind tunnel experiment and spacecraft launching site experiment is had higher requirement to the grade of its static state and dynamic real-time measurement precision thereof.Therefore to sensor except that finishing static demarcating, also to carry out its dynamic calibration, to improve sensor dynamic real-time measurement precision.But the demarcation loading force mode that adopts still continues the counterweight formula load mode that small-sized six-dimension force sensor adopts basically at present, the calibration experiment labor intensity is big, and the resolution that loads demarcation power is not high, and particularly the dynamic load calibration experiment more is difficult to realize.In addition, how all multidimensional power load calibrating table specially type special use at present, versatility is relatively poor, especially the multidimensional power loading caliberating device that is applicable to large-scale six-dimension force sensor is less, particularly being applied to the multi-dimension force sensor dynamic calibration can provide and determine just Xianyu's report more of device that multidimensional power dynamic load loads, has large-scale six-dimension force sensor well quiet, dynamic perfromance to development and has brought obstacle.
Summary of the invention
For overcoming the deficiency of the medium-and-large-sized multi-dimension force sensor calibrating and loading bench of above-mentioned prior art, a kind of large-tonnage multidimensional power that can provide easily is provided loads, be easy to realize that demarcation power loads continuously, unloads continuously and dynamic load, and simple in structure, compact, the calibrating and loading bench of large multi-dimensional force transducer solution of connection convenient disassembly.
The technical solution adopted for the present invention to solve the technical problems is: calibrating and loading bench is by cross on the loading bench, the loading bench column, and cross under the loading bench, the sensor hold-down support, two loading units and four loading blocks are formed; Loading unit is by loading frame, loading hydraulic cylinder, and pull pressure sensor, pull bar is formed; The pull bar of loading unit can be connected with five directions of loading blocks, by adjusting two loading units at the mounting means of loading bench column and last cross and the link position of pull bar and loading blocks thereof, can realize that multi-dimension force sensor is respectively tieed up demarcation power to load, consider the connection convenient disassembly, adopt bearing pin and the hole mode that is connected, effectively reduced the volume of loading bench; As power source, realize the loading of large-tonnage demarcation power with hydraulic system, and be easy to realize automatically, continuously dynamic load.
Specific implementation is as follows: calibrating and loading bench is by cross on the loading bench, the loading bench column, and cross under the loading bench, the sensor hold-down support, two loading units and loading blocks are formed.Loading unit is by the loading unit framework, loading hydraulic cylinder, and the one-dimensional pull pressure sensor, pull bar is formed.Last cross is connected by four loading bench columns with following cross, connect the multi-dimension force sensor hold-down support on the following cross, be provided for installing first mounting hole of loading unit on three faces of the sustained height of loading bench column, last cross and following cross end are provided for installing second mounting hole of loading unit, and loading unit is connected by bearing pin with the loading blocks that links to each other with multi-dimension force sensor.Loading frame is installed in the loading bench column or goes up on the cross, and the two ends of loading hydraulic cylinder are connected with the inwall of loading frame, an end of pull pressure sensor respectively, and the other end of pull pressure sensor is connected with pull bar.Pull bar is provided with a through hole in the radial direction at the one end, and adjacent two sides of loading blocks are provided with two through holes, and its end face is provided with a blind hole, and three holes are vertical mutually and crossing, and described bearing pin is installed in it.Therefore loading unit can be connected each and load column except that on all the other five directions of opening direction.By adjusting two installation sites of loading unit on stand, and with its pull bar with loading blocks that multi-dimension force sensor is connected on the hole that makes progress of counterparty be connected with bearing pin; Pull and stretch action by loading hydraulic cylinder has realized respectively tieing up demarcation power and loading being installed on the sensor hold-down support large multi-dimensional force transducer large-tonnage.The concrete numerical value of imposed load is by the one-dimensional proof force sensor measurement that is connected with loading hydraulic cylinder with pull bar; By automatic control loaded oil cylinder working-pressure, thereby realize multi-dimension force sensor is loaded and dynamic load automatically.
The invention has the beneficial effects as follows: (1) loading bench is simple in structure, compact, and volume is little and connect convenient disassembly, by making up the installation site of two loading units, has realized the demarcation power of respectively tieing up of large multi-dimensional force transducer is loaded.(2) the loading force range is big.As power source, can conveniently obtain the large-tonnage loading force with hydraulic system, reduce on-site proving experimenter labour intensity simultaneously by regulating system pressure or increase load cylinder cylinder diameter.(3) loading force regulate continuously, the resolution height.Hydraulic servo or ratio loading system are easy to realize that transducer calibration crosses that demarcation power loads continuously in the range ability of range request, unloading continuously, and load resolution and can regulate by system element, can realize that loading force is stepless adjustable.(4) automatic, Real-time and Dynamic loads.When sensor carries out dynamic calibration, need there be a standard signal that it is encouraged.By Hydrauservo System or ratio system, be easy to realize load automatically and definite dynamic load, to finish the research of sensor dynamic calibration experiment.
Description of drawings
Fig. 1 is the structural representation of calibrating and loading bench of large multi-dimensional force transducer;
Fig. 2 is loading unit and loading blocks connection diagram;
Figure 3 shows that multi-dimension force sensor x forward demarcation power loads the enforcement synoptic diagram;
Figure 4 shows that multi-dimension force sensor z forward demarcation power loads the enforcement synoptic diagram;
Figure 5 shows that multi-dimension force sensor y negative sense demarcation moment loads the enforcement synoptic diagram;
Figure 6 shows that multi-dimension force sensor z forward demarcation moment loads the enforcement synoptic diagram.
Embodiment
Fig. 1 is the structural representation of calibrating and loading bench of large multi-dimensional force transducer, comprise cross (6), loading bench column (7), following cross (8), two loading units and four loading blocks (5), last cross (6) is connected by four loading bench columns (7) with following cross (8), following cross (8) is gone up and is connected multi-dimension force sensor hold-down support (9), be provided for installing first mounting hole of loading unit on three faces of loading bench column (7) sustained height, last cross (6) and following cross (8) end are provided for installing second mounting hole of loading unit.Loading frame (1) is installed in first mounting hole of described loading bench column (7).
Fig. 2 is loading unit and loading blocks connection diagram, form by loading frame (1), loading hydraulic cylinder (2), one-dimensional pull pressure sensor (3), pull bar (4), the two ends of loading hydraulic cylinder (2) are connected with the inwall of loading frame (1), an end of one-dimensional pull pressure sensor (3) respectively, the other end of one-dimensional pull pressure sensor (3) is connected with pull bar (4), and loading unit is connected by bearing pin (10) with the loading blocks that links to each other with multi-dimension force sensor (5).
The x forward demarcation power that Figure 3 shows that multi-dimension force sensor 11 loads the enforcement synoptic diagram, multi-dimension force sensor 11 is fixed on the multi-dimension force sensor hold-down support 9, only need to install a loading unit this moment, loading frame 1 is installed on the loading bench column 7, the two ends of loading hydraulic cylinder 2 are connected with the inwall of loading frame 1, an end of one-dimensional pull pressure sensor 3 respectively, the other end of one-dimensional pull pressure sensor 3 is connected with pull bar 4, and pull bar 4 is connected by bearing pin 10 in the horizontal blind hole of its end face with the loading blocks 5 that links to each other with multi-dimension force sensor 11.Shrink pull bar 4 motions that drive is connected with one-dimensional pull pressure sensor 3 by loading hydraulic cylinder 2, multi-dimension force sensor x forward demarcation power is loaded thereby finish.X negative sense demarcation power loads and y is positive and negative loads to demarcation power, can loading frame 1 be installed in loading bench column 7 corresponding positions with reference to above-mentioned embodiment.
Figure 4 shows that multi-dimension force sensor z forward demarcation power loads the enforcement synoptic diagram, multi-dimension force sensor 11 is fixed on the multi-dimension force sensor hold-down support 9, need to install two loading units this moment, respectively two loading frames 1 are installed in corresponding second mounting hole in cross 6 ends, the two ends of loading hydraulic cylinder 2 respectively with the inwall of loading frame 1, one end of one-dimensional pull pressure sensor 3 is connected, the other end of one-dimensional pull pressure sensor 3 is connected with pull bar 4, and pull bar 4 is connected by bearing pin 10 in its vertical through hole with the loading blocks 5 that links to each other with multi-dimension force sensor 11.Drive pull bar 4 motions that are connected with one-dimensional pull pressure sensor 3 simultaneously by two loading hydraulic cylinders 2, the z forward demarcation power of finishing multi-dimension force sensor 11 loads.
Figure 5 shows that multi-dimension force sensor y negative sense demarcation moment loads the enforcement synoptic diagram, when multi-dimension force sensor is applied demarcation moment, all need two loading units to use simultaneously, when applying demarcation moment at the y negative sense, one of them loading unit is installed on the cross 6, be that loading frame 1 is installed in cross 6 ends second mounting hole, the two ends of loading hydraulic cylinder 2 respectively with the inwall of loading frame 1, one end of one-dimensional pull pressure sensor 3 is connected, the other end of one-dimensional pull pressure sensor 3 is connected with pull bar 4, and pull bar 4 is connected by bearing pin 10 in its side through hole with the loading blocks 5 that links to each other with multi-dimension force sensor 11.Another loading unit is installed on down on the cross 8 after removing loading frame 1, the two ends that are loading hydraulic cylinder 2 are connected with an end of cross 8, one-dimensional pull pressure sensor 3 respectively, the other end of one-dimensional pull pressure sensor 3 is connected with pull bar 4, and pull bar 4 is connected by bearing pin 10 in its vertical through hole with the loading blocks 5 that links to each other with multi-dimension force sensor 11.This embodiment drives pull bar 4 motions that are connected with one-dimensional pull pressure sensor 3 simultaneously by two loading hydraulic cylinders 2, and the y negative sense moment that can finish sensor applies.With reference to this embodiment, can realize the z negative sense demarcation power of multi-dimension force sensor 11 is loaded, the y forward demarcates moment and x is positive and negative to demarcating the moment loading.
The z forward that Figure 6 shows that multi-dimension force sensor 11 is demarcated moment loading enforcement synoptic diagram, be installed in two relative loading bench columns as shown in FIG. two sides with two loading units this moment, this moment, loading frame 1 was installed on the loading bench column 7, the two ends of loading hydraulic cylinder 2 are connected with the inwall of loading frame 1, an end of one-dimensional pull pressure sensor 3 respectively, the other end of one-dimensional pull pressure sensor 3 is connected with pull bar 4, and pull bar 4 is connected by bearing pin 10 in its horizontal through hole with the loading blocks 5 that links to each other with multi-dimension force sensor 11.Drive pull bar 4 motions that are connected with one-dimensional pull pressure sensor 3 simultaneously by two loading hydraulic cylinders 2, the z forward of multi-dimension force sensor 11 is demarcated the moment loading thereby finish.With reference to this embodiment,, can realize that the z negative sense of multi-dimension force sensor 11 is demarcated moment to load by changing the installation site of two loading units.
Claims (5)
1. calibrating and loading bench of large multi-dimensional force transducer, it is characterized in that: this loading bench comprises cross (6), loading bench column (7), following cross (8), loading unit and loading blocks (5), the described cross (6) of going up is connected by four loading bench columns (7) with following cross (8), following cross (8) is gone up and is connected multi-dimension force sensor hold-down support (9), be provided for installing first mounting hole of loading unit on three faces of described loading bench column (7) sustained height, described upward cross (6) and following cross (8) end are provided for installing second mounting hole of loading unit, and described loading unit is connected by bearing pin (10) with the loading blocks that links to each other with multi-dimension force sensor (5).
2. calibrating and loading bench of large multi-dimensional force transducer according to claim 1, it is characterized in that: loading unit is made up of loading frame (1), loading hydraulic cylinder (2), one-dimensional pull pressure sensor (3), pull bar (4), the two ends of loading hydraulic cylinder (2) are connected with the inwall of loading frame (1), an end of one-dimensional pull pressure sensor (3) respectively, and the other end of one-dimensional pull pressure sensor (3) is connected with pull bar (4).
3. calibrating and loading bench of large multi-dimensional force transducer according to claim 2 is characterized in that: loading frame (1) is installed in first mounting hole of described loading bench column (7).
4. calibrating and loading bench of large multi-dimensional force transducer according to claim 2 is characterized in that: loading frame (1) is installed in cross (6) end second mounting hole.
5. according to claim 3 or 4 described calibrating and loading bench of large multi-dimensional force transducer, it is characterized in that: described pull bar (4) is provided with a through hole in the radial direction at the one end, adjacent two sides of described loading blocks (5) are provided with two through holes, its end face is provided with a blind hole, three holes are vertical mutually and crossing, and described bearing pin (10) is installed in it.
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| CN2010101039462A CN101776506B (en) | 2010-01-28 | 2010-01-28 | Calibrating and loading bench of large multi-dimensional force transducer |
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| CN114414136B (en) * | 2021-12-30 | 2024-05-31 | 西安航天计量测试研究所 | Non-contact pressure measurement method and system based on strain and temperature sensors |
| CN115265902A (en) * | 2022-07-25 | 2022-11-01 | 中国农业大学 | Calibration test bed of three-pin type suspension force measuring system of tractor |
| CN115265902B (en) * | 2022-07-25 | 2024-06-11 | 中国农业大学 | Calibration test bed of three-pin type suspension force measurement system of tractor |
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| CN101776506B (en) | 2011-12-14 |
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