CN203858061U - Hydraulic drive wide-range force sensor calibration device - Google Patents
Hydraulic drive wide-range force sensor calibration device Download PDFInfo
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- CN203858061U CN203858061U CN201420289274.2U CN201420289274U CN203858061U CN 203858061 U CN203858061 U CN 203858061U CN 201420289274 U CN201420289274 U CN 201420289274U CN 203858061 U CN203858061 U CN 203858061U
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- lever
- hydraulic
- force sensor
- sensor
- loading
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Abstract
The utility model provides a hydraulic drive wide-range force sensor calibration device. The hydraulic drive wide-range force sensor calibration device comprises a column; a loading lever, wherein the loading lever is horizontally disposed on the column, the middle of the loading lever is rotatably connected with the top of the column, and two sides of the loading lever are symmetrically marked with scale values by using the rotating fulcrum as the zero point; a level meter fixed on the loading lever; a force loading mechanism disposed at one side of the loading lever and used for providing an upward active force for the one side of the loading lever; an elevating system disposed at the other side of the loading lever; a to-be-tested force sensor and a standard metering sensor which are serially installed on the elevating system; a horizontal carrier block, wherein the bottom of the horizontal carrier block is contacted with one upper sensor of the serially installed to-be-tested force sensor and the standard metering sensor, and the top of the horizontal carrier block is contacted with the other side of the loading lever; and a force sensor signal display unit electrically connected with the to-be-tested force sensor and the standard metering sensor. Wide-range calibration of the force sensor can be achieved, and the hydraulic drive wide-range force sensor calibration device has the advantages of wide calibration range, high precision and easy adjustment.
Description
Technical field
The utility model relates to a kind of calibrating instrument, especially a kind of sensor calibration apparatus.
Background technology
Power sensor refers to the sensor that mechanical quantity is converted to the electric signal such as voltage, electric current.Power sensor is the most frequently used and very important a kind of in numerous sensor kind, and it is widely used in the various fields such as industry, national defence, Aero-Space, medical science.Transducer calibration is the important guarantee of test sensors performance, only has through the calibrated sensor of sensor calibration apparatus and could effectively use.The caliberating device of power sensor is mainly to adopt counterweight to load at present, or loads to power sensor by driven by servomotor.The shortcoming that adopts counterweight to load is that loading force is discontinuous, and adopting the shortcoming of driven by servomotor is the restriction that maximum load power is subject to servomotor power.
With the generally use of putting forth effort sensor, its range ability presents the feature of small-range high precision, large range high precision.Therefore the force sensor caliberating device that, invent a kind of applicable wide-range scope, loads is continuously very essential.
Summary of the invention
The purpose of this utility model is to provide a kind of loading force continuous, the force sensor caliberating device of wide-range scope.The technical solution adopted in the utility model is:
A hydraulic-driven wide-range force sensor caliberating device, comprising:
Column, for supporting loading lever;
Load lever, horizontal on column, the top of middle part and column is rotationally connected, and take rotating fulcrum as zero starting point, in the both sides symmetry that loads lever, indicates scale value;
Level meter, is fixed on and loads on lever;
Power load maintainer, a side and the integral body of being located at loading lever can move along loading lever, to loading a side of lever, provide acting force upwards;
Elevating mechanism, is located at the opposite side that loads lever;
By force cell and standard metering sensor, be installed in series on elevating mechanism, all keep horizontality;
Horizontal bearing piece, bottom contacts with the sensor by top among force cell and standard metering sensor being installed in series, and top contacts with the opposite side of loading lever;
Force sensor signals display unit, is connected with standard metering sensor electrical respectively with by force cell.
Further, in the bottom center that loads lever, have along its length groove.
Further, the bottom of horizontal bearing piece is flat pedestal, and strong baton pass is installed by pedestal central authorities, and power baton pass withstands in the groove that loads lever bottom, and with groove clearance fit.
Further, power load maintainer comprises hydraulic piston, piston cylinder support, hydraulic oil pipe, hydraulic pump, load bar; Hydraulic piston is arranged on piston cylinder support, and hydraulic piston connects load bar, and load bar withstands in the groove that loads lever bottom, and with groove clearance fit; Hydraulic pump is connected with hydraulic piston by hydraulic oil pipe.
Further, loading the groove of opening lever bottom is rectangular recess, and correspondingly, the power baton pass on horizontal bearing piece is rectangular bar.
Further, elevating mechanism adopts ball screw type elevator, comprises a ball-screw lifting water platform, on the polished rod that ball-screw lifting water platform can be erect in the left and right sides, slide, and in the middle of the polished rod of the left and right sides, be a ball-screw.
Preferably, described level meter is fixedly mounted on the central part that loads lever.
The utility model has the advantage of:
1), owing to adopting lever principle, after determining by the range of force cell, can, by regulating the arm of force to change the loading force being applied to by force cell, increase the new mode that changes loading force size.
2), owing to adopting hydraulic-driven, the thrust that the driving force on hydraulic piston can realize on hydraulic piston by change oil pressure loads to maximal value continuously from zero.
3), owing to adopting ball-screw lifting water platform, the levelness of calibrate loading lever by level meter, can guarantee to be applied in power vertical loading on by force cell.
4) utilize lever principle, and acting force apply position (load bar position) and horizontal bearing piece position all can move left and right, the arm of force on lever both sides can change continuously, so the non-constant width of the range ability of this device.
Accompanying drawing explanation
Fig. 1 is that structure of the present utility model forms schematic diagram.
Embodiment
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
As shown in Figure 1: hydraulic-driven wide-range force sensor caliberating device provided by the utility model, comprising:
Load lever 1, level meter 2, column 3, power load maintainer 4, horizontal bearing piece 51, by force cell 52, standard meter measure one's own ability sensor 53, elevating mechanism 54, signal wire 62 and force sensor signals display unit 61.Wherein power load maintainer 4 comprises hydraulic piston 41, piston cylinder support 42, hydraulic oil pipe 43, hydraulic pump 44, load bar 45.
Described column 3 is for supporting loading lever 1.Load lever 1 horizontal on column 3, its middle part is connected through the hinge with the top of column 3, therefore rotatable, and take rotating fulcrum 11 as zero starting point, in the both sides symmetry that loads lever 1, indicates scale value.
Level meter 2 is fixed on and loads on lever 1; Preferably be fixed on the central part that loads lever 1.Whether level meter 2 loads lever 1 in horizontality for judging.If load lever 1 in level state not, regulate elevating mechanism 54 to loading lever 1 level.
The bottom center of described loading lever 1 has rectangular recess along its length, and its length is 1:0.3:0.3 with the ratio that loads the length of lever.
Hydraulic piston 41, piston cylinder support 42, hydraulic oil pipe 43, hydraulic pump 44, load bar 45 are located at a side that loads lever 1, can along loading lever 1, move (such as being arranged on a truck) together on the whole, for providing acting force upwards to loading a side of lever 1.Particularly, hydraulic piston 41 is arranged on piston cylinder support 42, and hydraulic piston 41 connects load bars 45, and load bar 45 withstands in the groove that loads lever 1 bottom, and with groove clearance fit, can horizontally slip; Hydraulic pump 44 is connected with hydraulic piston 41 by hydraulic oil pipe 43.
Described elevating mechanism 54 is located at the opposite side that loads lever 1; Elevating mechanism 54 adopts ball screw type elevator, comprises a ball-screw lifting water platform 541, on the polished rod that ball-screw lifting water platform 541 can be erect in the left and right sides, slide, and in the middle of the polished rod of the left and right sides, be a ball-screw 542.By force cell 52 and standard metering sensor 53, be installed in series one on the other on ball-screw lifting water platform 541; Ball-screw lifting water platform 541 keeps horizontality, thereby makes by force cell 52 and standard metering sensor 53 all maintenance levels.
The bottom of horizontal bearing piece 51 is flat pedestal, and is contacted by force cell 52; Top need to contact with the opposite side that loads lever 1, with conduction power, to sensor, forms and is applied to by the loading force on force cell; Particularly, strong baton pass 511(power baton pass 511 tops as horizontal bearing piece are installed by horizontal bearing piece 51 pedestal central authorities), power baton pass 511 withstands in the groove that loads lever 1 bottom, and with groove clearance fit, can either conduction power can horizontally slip again.Owing to loading the groove of lever 1 bottom, be rectangle, so the power baton pass on horizontal bearing piece 51 511 adopt rectangular bar.
By force cell 52, all by signal wire 62, be connected with force sensor signals display unit 61 with standard metering sensor 53, force sensor signals display unit 61 is two passage signals collecting.
The process of utilizing hydraulic-driven wide-range force sensor caliberating device of the present utility model to demarcate power sensor is as follows:
Demarcate before test, first determine by force cell 52 range abilities, measuring accuracy, then choose same range, the more higher leveled standard meter of the precision sensor 53 of measuring one's own ability.To be installed in series on ball-screw lifting water platform 541 by force cell 52 and the standard meter sensor 53 of measuring one's own ability, by force cell 52 be positioned at standard meter measure one's own ability sensor 53 above.Horizontal bearing piece 51 covers by above force cell 52, the adjustable height of adjustment roll ballscrew lifting water platform 541, and eye-level instrument 2, until load lever 1 in horizontality.
According to lever principle, calculate by the product of the force cell 52 maximum weighted limit and maximum arm of force, then according to moment equal principle, the size that applies power by hydraulic piston 41 calculates the maximum arm of force that applies.Primer fluid press pump 44, after its steady operation, reads by the measure one's own ability power value of sensor 53 of force cell 52 and standard meter by force sensor signals display unit 61.Standard meter is measured one's own ability to the power displayed value of sensor 53 as standard value, and the mode by " back-to-back " realizes by the demarcation of force cell 52.
Then, the power that the applies value needing according to transducer calibration, the horizontal level of change hydraulic piston 41, changes by changing the arm of force length power that applies being obtained by force cell 52 places.By each different sensor stress value, form the calibration curve of tested sensor 52.
Finally it should be noted that: the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (8)
1. a hydraulic-driven wide-range force sensor caliberating device, is characterized in that, comprising:
Column (3), for supporting loading lever (1);
Load lever (1), horizontal upper at column (3), the top of middle part and column (3) is rotationally connected, and take rotating fulcrum (11) as zero starting point, in the both sides symmetry that loads lever (1), indicates scale value;
Level meter (2), is fixed on and loads on lever (1);
Power load maintainer (4), a side and the integral body of being located at loading lever (1) can be mobile along loading lever (1), to loading a side of lever (1), provide acting force upwards;
Elevating mechanism (54), is located at the opposite side that loads lever (1);
By force cell (52) and standard metering sensor (53), be installed in series upper at elevating mechanism (54), all keep horizontality;
Horizontal bearing piece (51), bottom contact with the sensor by top among force cell (52) and standard metering sensor (53) being installed in series, and top contacts with the opposite side of loading lever (1);
Force sensor signals display unit (61), is electrically connected to respectively with by force cell (52) and standard metering sensor (53).
2. hydraulic-driven wide-range force sensor caliberating device as claimed in claim 1, is characterized in that:
In the bottom center that loads lever (1), have along its length groove.
3. hydraulic-driven wide-range force sensor caliberating device as claimed in claim 2, is characterized in that:
The bottom of horizontal bearing piece (51) is flat pedestal, and strong baton pass (511) is installed by pedestal central authorities, and power baton pass (511) withstands in the groove that loads lever (1) bottom, and with groove clearance fit.
4. hydraulic-driven wide-range force sensor caliberating device as claimed in claim 2, is characterized in that:
Power load maintainer (4) comprises hydraulic piston (41), piston cylinder support (42), hydraulic oil pipe (43), hydraulic pump (44), load bar (45); It is upper that hydraulic piston (41) is arranged on piston cylinder support (42), and hydraulic piston (41) connects load bar (45), and load bar (45) withstands in the groove that loads lever (1) bottom, and with groove clearance fit; Hydraulic pump (44) is connected with hydraulic piston (41) by hydraulic oil pipe (43).
5. hydraulic-driven wide-range force sensor caliberating device as claimed in claim 3, is characterized in that:
Loading the groove of opening lever (1) bottom is rectangular recess, and correspondingly, the power baton pass (511) on horizontal bearing piece (51) is rectangular bar.
6. the hydraulic-driven wide-range force sensor caliberating device as described in any one in claim 1～5, is characterized in that:
Elevating mechanism (54) adopts ball screw type elevator.
7. hydraulic-driven wide-range force sensor caliberating device as claimed in claim 6, is characterized in that:
Described ball screw type elevator comprises a ball-screw lifting water platform (541), on the polished rod that ball-screw lifting water platform (541) can be erect in the left and right sides, slides, and in the middle of the polished rod of the left and right sides, be a ball-screw (542).
8. the hydraulic-driven wide-range force sensor caliberating device as described in any one in claim 1～5, is characterized in that:
Described level meter (2) is fixedly mounted on the center of top position that loads lever 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420289274.2U CN203858061U (en) | 2014-05-30 | 2014-05-30 | Hydraulic drive wide-range force sensor calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420289274.2U CN203858061U (en) | 2014-05-30 | 2014-05-30 | Hydraulic drive wide-range force sensor calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203858061U true CN203858061U (en) | 2014-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420289274.2U Withdrawn - After Issue CN203858061U (en) | 2014-05-30 | 2014-05-30 | Hydraulic drive wide-range force sensor calibration device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203858061U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994855A (en) * | 2014-05-30 | 2014-08-20 | 江苏出入境检验检疫局机电产品及车辆检测中心 | Hydraulic driving wide-range force sensor calibration device |
| CN109000847A (en) * | 2018-06-28 | 2018-12-14 | 中国人民解放军国防科技大学 | Calibration method for force sensor |
| CN113405984A (en) * | 2021-06-26 | 2021-09-17 | 南京熙赢测控技术有限公司 | Calibration system and method for longitudinal force friction coefficient tester |
-
2014
- 2014-05-30 CN CN201420289274.2U patent/CN203858061U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994855A (en) * | 2014-05-30 | 2014-08-20 | 江苏出入境检验检疫局机电产品及车辆检测中心 | Hydraulic driving wide-range force sensor calibration device |
| CN109000847A (en) * | 2018-06-28 | 2018-12-14 | 中国人民解放军国防科技大学 | Calibration method for force sensor |
| CN113405984A (en) * | 2021-06-26 | 2021-09-17 | 南京熙赢测控技术有限公司 | Calibration system and method for longitudinal force friction coefficient tester |
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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: 20141001 Effective date of abandoning: 20151021 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |