CN204228308U - Based on the torque calibration measurement mechanism of flexible support - Google Patents
Based on the torque calibration measurement mechanism of flexible support Download PDFInfo
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- CN204228308U CN204228308U CN201420670627.3U CN201420670627U CN204228308U CN 204228308 U CN204228308 U CN 204228308U CN 201420670627 U CN201420670627 U CN 201420670627U CN 204228308 U CN204228308 U CN 204228308U
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- displacement sensor
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Abstract
The utility model relates to a kind of torque calibration measurement mechanism based on flexible support, left and right scale pan is installed by flexure strip symmetry in the both sides of standard torque beam, carrying additionally for counterweight, the rotation center " O " of described flexible support overlaps with the central axis " Y " of standard torque beam; The laser displacement sensor be arranged on pedestal is provided with below the lower surface of standard torque beam, the lower surface symmetria bilateralis of standard torque beam installs left and right electromagnetic torque device, when there being torque load, laser displacement sensor sends the laser sensor caused by torque load measured probe to left electromagnetic torque device or right electromagnetic torque device with the electric signal of the displacement variable of standard arm of force lower surface after metering circuit process, produces electromagnetic force even up standard torque beam for controlling left electromagnetic torque device or right electromagnetic torque device.The aggregate measures such as the utility model is followed the tracks of by electromagnetic force equilibrium system, high precision laser displacement sensor, signal simultaneously fast, measuring system, improve measuring accuracy to greatest extent.
Description
Technical field
The utility model relates to a kind of torque calibration measurement mechanism, particularly a kind of torque calibration measurement mechanism based on flexible support.
Background technology
Moment of torsion, as a major parameter of mechanics, to its Measurement accuracy, is calibrated and controls to have a wide range of applications in industries such as space flight, aviation, boats and ships, weapons.The importance of torque measurement, calibration is by each developed country is paid attention to.Take Germany as the advanced country of representative, greatly develop advanced high precision application torque metering standard set-up, to meet the demand of growing military and civilian industry department.Torque standard device is used to reappear standard torque value and be used for carrying out the device of transmission of quantity value, is widely used in various torque gauge, the calibrating of torque sensor and calibration.Current torque standard device mostly is dead weight type safe, and the mode namely adopting the arm of force to add counterweight is demarcated equipment or calibrates.Support the critical component as dead weight type safe torque standard device, playing a part to support the arm of force and transmitting torque, is the direct embodiment of whole table apparatus sensitivity.
The main supporting form of current dead weight type safe torque standard device has knife edge bearing, gas bearing and magnetic suspension bearing.
The domestic support using knife edge bearing as torque standard device is representative with middle ship heavy industry the 7th 04 Institute national defence high pulling torque one-level test satellite location most, as the 2kNm standard torquer of paper " research of torque standard device optimal design " the employing knife edge bearing development that the people such as Li Tao, Hu Defu deliver, and establish the torque standard device of different range ability accordingly.But the edge of a knife cannot ensure that the locus of measurement mechanism moving part oscillation centre is determined constant, and blade cutter always exists the moment of friction of some levels between holding, and can produce certain impact to the sensitivity of device.
Gas bearing starts progressively to be applied on the high-end torque standard device of various countries in recent years, its key features be exactly bearing stators and rotators between friction media have employed pure gas, utilize air film support load or reduce friction, thus significantly reducing friction force.The paper " utilization of high precision supporting technology on national primary standard torquer " delivered as people such as Li Tao adopts gas bearing as the support of 100Nm dead weight type safe standard torquer, it is rotationally supported that the paper " application of hydrostatic bearing in torque standard device " delivered as people such as Qin Haifeng adopts hydrostatic gas-lubricated bearing as 200Nm torque standard device, as University Of Tianjin's Master's thesis " development of dead weight type safe torque standard device " adopts air-bearing to have developed 200Nm standard torquer.Adopt gas bearing to decrease the impact of moment of friction to a certain extent as the supporting of torque standard device, but gas bearing have certain defect.Due to the compressibility of gas, gas bearing is designed or manufactures surely not volatile at that time, less stable; Because air-film thickness is generally several microns to tens microns, to the dimensional tolerence of key components and parts and surface roughness requirements all high, thus result in rolling up of manufacturing cost, therefore gas bearing is all applied in high-end field; The most important thing is, due to the characteristic of gas itself, bleed pressure can not be too high, therefore the load-bearing capacity of gas bearing and static rigidity lower, be especially unsuitable for wide range torque standard device as rotating bearing component.
Magnetic levitation utilizes magnetic field force to carry out balanced load, realizes the technology of noncontact supporting.As the paper " the micro-torque sensor calibration instrument design of magnetic suspension effect " that the people such as Xu Jun deliver, basic functional principle is that control system utilizes the position of position transducer detection rotor and then the attractive force in real time between regulating magnet and rotor to make rotor be in the position of expectation.Owing to there is no Mechanical Contact between rotor and stator, therefore there are not wearing and tearing in magnetic suspension bearing.But the noncontact feature of magnetic bearing is only a cancellation the wearing and tearing of machinery, but " friction " still exists, and outside removing windage, the friction of magnetic bearing mainly comprises eddy current joule loss, alternating hysteresis and rotational hysteresis etc.In addition, due to the remagnetization of magnetic levitation bearing system rotor surface, the impact such as eddy current, alternating hysteresis and rotational hysteresis acts on simultaneously, adds the factors such as complicated version, and the research that magnetic bearing is rubbed and experiment are comparatively complicated.
No matter torque standard device adopts knife edge bearing, gas bearing or magnetic suspension bearing as the rotationally supported support arm of force, always there is the moment of friction of some levels and supporting and the arm of force have relative motion, be not suitable for the demand of wide range torque standard device to high sensitivity and high-bearing capacity.
Summary of the invention
The utility model is for the demand of large ship power system to high pulling torque calibration measurement high sensitivity, high-bearing capacity, a kind of torque calibration measurement mechanism based on flexible support is proposed, by the rotary supporting part transmission torsional deflection of flexible support as device, by exporting method and then the indirect inspection moment of torsion of electric signal measurement to electromagnetic torque device
.
The technical solution of the utility model is: a kind of torque calibration measurement mechanism based on flexible support, there is one loads calibration standard torque beam for moment of torsion, a flexible support, the lower surface of flexible support is fixedly connected with pedestal, upper surface is fixedly connected with standard torque beam, left and right scale pan is installed, carrying additionally for counterweight by flexure strip symmetry in the both sides of standard torque beam, and the rotation center " O " of described flexible support overlaps with the central axis " Y " of standard torque beam, when there being moment of torsion to load, standard torque beam rotates around rotation center " O " together in company with flexible support, the laser displacement sensor be arranged on pedestal is provided with below the lower surface of described standard torque beam, the lower surface symmetria bilateralis of standard torque beam is installed left, right electromagnetic torque device, when there being torque load, laser displacement sensor sends the laser sensor caused by torque load measured probe to left electromagnetic torque device or right electromagnetic torque device with the electric signal of the displacement variable of standard arm of force lower surface after metering circuit process, produce electromagnetic force even up standard torque beam for controlling left electromagnetic torque device or right electromagnetic torque device.
The output signal of described electromagnetic torque device is through metering circuit sampling, collection, display.
Described flexible support rotates the structure of 45 degree in " X " type cross-garnet butt.Described laser displacement sensor is range ability is 5mm, resolution is the high precision laser displacement sensor of 0.03um.
The beneficial effects of the utility model are: the torque calibration measurement mechanism based on flexible support of the present utility model, being different from traditional torque standard device adopts knife edge bearing, gas bearing or magnetic suspension bearing as the rotating bearing component of device, but adopts flexible support as the rotating bearing component of device.Compared with prior art, flexible support to have with the standard arm of force without relative motion, without rubbing, highly sensitive advantage, is thus suitable for the comprehensive requirement of super large torque standard device to high sensitivity and high-bearing capacity.Laser displacement sensor is as displacement measurement parts, there is non-cpntact measurement, be easy to the feature of secondary development, and the laser displacement sensor of commercialization has very high displacement measurement resolution and precision in small-range scope, be applicable to the high-resolution requirement of high pulling torque standard set-up test macro.
Accompanying drawing explanation
Fig. 1 is measuring principle schematic diagram of the present utility model;
Fig. 2 is the schematic diagram of the torque calibration measurement mechanism based on flexible support of the present utility model;
Fig. 3 is metering circuit functional block diagram of the present utility model.
Embodiment
Be illustrated in figure 1 the utility model measuring principle schematic diagram, if the counterweight W that weight does not wait
1and W
2be placed on scale pan, standard torque beam and flexible support are by deflection angle θ.The moment making flexible support deflect into this angle can be expressed as:
because deformation angle θ is very little, above formula can be written as:
In formula: M is torque load; θ is flexible support deflection angle; K is the stiffness coefficient of flexible support; L is the half of standard torque beam length;
for the displacement of the vertical direction that the standard torque beam end caused due to torque load produces.So displacement s is directly proportional to moment of torsion, wherein K is the stiffness coefficient determined by flexible support self character, can carry out in advance testing and demarcating.Therefore indirectly testing torque load M can be carried out by test relative displacement Δ s.
Under this guidance of principle, Fig. 2 gives the torque calibration measurement scheme schematic diagram based on flexible support, and the lower surface comprising flexible support 8 is fixedly connected with pedestal, and upper surface is fixedly connected with standard torque beam 1; Scale pan 4,6 is arranged on the both sides of standard torque beam 1 respectively by flexure strip, symmetrical installation, realizes carrying additionally of counterweight; The rotation center " O " of flexible support 8 overlaps with the central axis " Y " of standard torque beam 1; When having moment of torsion to load, standard torque beam 1 rotates around rotation center " O " together in company with flexible support 8; Laser displacement sensor 3 is arranged on pedestal, the lower surface of laser probe alignment criteria torque beam 1; The lower surface of standard torque beam 1 and the probe of laser displacement sensor 3 form two the relative reference points measuring displacement, when there being torque load, laser displacement sensor 3 measures the laser sensor probe and the change in displacement of standard arm of force lower surface that are caused by torque load, and after metering circuit 5 processes, gives left electromagnetic torque device 2 or right electromagnetic torque device 7 control signal as torquer using the electric signal measured; Left and right electromagnetic torque device 2,7 symmetry is arranged on the both sides of standard torque beam 1; The coiler part of electromagnetic torque device due to the control by metering circuit electric signal, and then is subject to the effect of electromagnetic force and moves up and down in magnetic field, realizes evening up standard torque beam 1.
The output electric signal of laser displacement sensor 3 is connected in metering circuit 5; The electric signal that metering circuit 5 pairs of laser displacement sensors 3 export amplifies, exports, and drives the action of electromagnetic torque device; The electric signal that electromagnetic torque device exports is by metering circuit collection, storage, display.
When not having moment of torsion to load, the output correspondence system zero position of testing of laser displacement sensor 3; During work there is torsional deflection in flexible support 8 under torque load effect, drives standard torque beam 1 to deflect, and causes laser displacement sensor 3 probe to change with the relative distance of standard arm of force lower surface; Under clockwise torque loading or anti-clockwise torque loading effect, laser displacement sensor 3 exports the voltage signal with the proportional relation of displacement, this signal is as the input signal of metering circuit, control electromagnetic torque device through signal amplification, power amplification circuit, metering circuit 5 Real-time Collection electromagnetic torque device exports electric signal; Real-time torque load is calculated according to the electric signal collected.
Flexible support, adopt " X " type structure, flexible support structural parameters design according to torque standard device measurement range, sensitivity requirement.Laser displacement sensor, selects laser displacement sensor performance parameter according to torque standard device measurement range and resolution requirement.
In order to improve sensitivity and the bearing capacity of device, adopting flexible support 8 as shown in Figure 2, adopting cross-garnet butt to rotate the structure of 45 degree in shape.The flexible support of this structure adopts alloy steel to make, and because the feature of thin neck t can reach very high sensitivity, and has certain bearing capacity.Laser displacement sensor 3 adopts range ability to be 5mm, and resolution can reach the high precision laser displacement sensor of 0.03um.It has noncontact, without wearing and tearing, jamproof ability, has numeral, simulation two kinds of signals outputs, be convenient to carry out secondary development as displacement measurement device in torque standard device.During work, flexible support occurs bending and deformation under torque load effect, standard torque beam is driven to rotate, the probe of laser displacement sensor 3 and the relative distance of standard torque beam 1 lower surface change, under clockwise torque or anti-clockwise torque effect, this relative distance increases or reduces, and laser displacement sensor 3 exports the voltage signal with the proportional relation of displacement.When not having torque load, the output correspondence system zero-bit of laser displacement sensor 3, can demarcate system easily at any time zero point.
As shown in Figure 3, metering circuit 3 comprises power module, operation amplifier module, power amplifier module, signal acquisition module.Power module adopts the voltage stabilizing linear power supply of high precision, low maladjustment voltage; The electric signal that laser displacement sensor 3 exports outputs to electromagnetic torque device 2 or 7 drive the action of electromagnetic torque device through voltage amplification, power amplification, the output signal of electromagnetic torque device is through sampling resistor, by the output voltage at data collecting module collected sampling resistor two ends, the torque value that device loads can be measured.
Claims (3)
1. the torque calibration measurement mechanism based on flexible support, there is one loads calibration standard torque beam (1) for moment of torsion, a flexible support (8), the lower surface of flexible support (8) is fixedly connected with pedestal, upper surface is fixedly connected with standard torque beam (1), left and right scale pan (4,6) is installed by flexure strip symmetry in the both sides of standard torque beam (1), carrying additionally for counterweight, the rotation center " O " of described flexible support (8) overlaps with the central axis " Y " of standard torque beam (1), when there being moment of torsion to load, standard torque beam (1) rotates around rotation center " O " together in company with flexible support (8), it is characterized in that: below the lower surface of described standard torque beam (1), be provided with the laser displacement sensor (3) be arranged on pedestal, the lower surface symmetria bilateralis of standard torque beam (1) is installed left, right electromagnetic torque device (2, 7), when there being torque load, laser displacement sensor (3) sends the laser sensor caused by torque load measured probe to left electromagnetic torque device (2) or right electromagnetic torque device (7) with the electric signal of the displacement variable of standard arm of force lower surface after metering circuit (5) processes, produce electromagnetic force even up standard torque beam (1) for controlling left electromagnetic torque device (2) or right electromagnetic torque device (7).
2. according to claim 1 based on the torque calibration measurement mechanism of flexible support, it is characterized in that: described flexible support rotates the structure of 45 degree in " X " type cross-garnet butt.
3. according to claim 1 based on the torque calibration measurement mechanism of flexible support, it is characterized in that: described laser displacement sensor (3) is range ability is 5mm, resolution is the high precision laser displacement sensor of 0.03um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670627.3U CN204228308U (en) | 2014-11-11 | 2014-11-11 | Based on the torque calibration measurement mechanism of flexible support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670627.3U CN204228308U (en) | 2014-11-11 | 2014-11-11 | Based on the torque calibration measurement mechanism of flexible support |
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| CN204228308U true CN204228308U (en) | 2015-03-25 |
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| CN201420670627.3U Withdrawn - After Issue CN204228308U (en) | 2014-11-11 | 2014-11-11 | Based on the torque calibration measurement mechanism of flexible support |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330198A (en) * | 2014-11-11 | 2015-02-04 | 中国船舶重工集团公司第七0四研究所 | Flexible support based torque calibration and measurement device |
| CN105203256A (en) * | 2015-09-15 | 2015-12-30 | 中国船舶重工集团公司第七0四研究所 | Micro-torque calibrating weight loading damper |
| CN110824190A (en) * | 2019-10-12 | 2020-02-21 | 江苏大学 | Device and method for measuring ion wind speed |
-
2014
- 2014-11-11 CN CN201420670627.3U patent/CN204228308U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330198A (en) * | 2014-11-11 | 2015-02-04 | 中国船舶重工集团公司第七0四研究所 | Flexible support based torque calibration and measurement device |
| CN104330198B (en) * | 2014-11-11 | 2016-08-24 | 中国船舶重工集团公司第七0四研究所 | Torque calibration measurement apparatus based on flexible support |
| CN105203256A (en) * | 2015-09-15 | 2015-12-30 | 中国船舶重工集团公司第七0四研究所 | Micro-torque calibrating weight loading damper |
| CN105203256B (en) * | 2015-09-15 | 2017-08-11 | 中国船舶重工集团公司第七0四研究所 | Slight torque calibrating weight loads damper |
| CN110824190A (en) * | 2019-10-12 | 2020-02-21 | 江苏大学 | Device and method for measuring ion wind speed |
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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: 20150325 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |