CN1458504A - High accuracy mechanical dynamo-meter and calibrating method - Google Patents
High accuracy mechanical dynamo-meter and calibrating method Download PDFInfo
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- CN1458504A CN1458504A CN 03126108 CN03126108A CN1458504A CN 1458504 A CN1458504 A CN 1458504A CN 03126108 CN03126108 CN 03126108 CN 03126108 A CN03126108 A CN 03126108A CN 1458504 A CN1458504 A CN 1458504A
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Abstract
The present invention relates to measurement instrument, and is especially a large mechanical dynamometer. The high accuracy mechanical dynamometer consists of main body, frame, weighing sensor combination, power mechanism, pressurizing mechanism, compression displacement doubling mechanism and operation instrument. The power mechanism consists of stepped motor and cycloidal pin gear reducer and is fixed on the chassis; the pressurizing mechanism consists of pressurizing screw bolt and nut and is used to change the force direction of the force transmitting level; the four-upright frame on the bearing platform and the compression displacement doubling mechanism constitute one integral frame to facilitate the calibration of the dynamometer; and the disc spring has a decades times increased contraction amount greater than that of the displacement sensor resulting in one precision up to one factor of 640,000.
Description
Affiliated technical field
The invention belongs to the surveying instrument field, especially big machinery formula (no hydraulic pressure) force measuring machine.
Background technology
As everyone knows, the large-scale high-precision force measuring machine uses high precision standard test weight (each 1t) usually, when weighing reaches tens of ton hours, because of the volume of counterweight is big, requires high to use equipment and environmental baseline.This class force measuring machine is bulky, highly reaches a few floor height, and weight reaches tens tons even more than 100 ton, and price is very high.
Also have a kind of common comparison formula force measuring machine, after the hydraulically operated equipment (HOE) pressurization, measure as standard by single high-precision weighing sensor.Because inevitably to be subjected to the significant impact of hydraulic power source motor oscillating, hydraulic pressure fluctuation and hydraulic leak, and the restriction of single LOAD CELLS error, this type of force measuring machine precision is lower.Simultaneously because of the maximum distortion of LOAD CELLS own only about 0.3mm, have any problem with the mode control survey precision of mechanical-force-transmission screw press.
Also have two my patent and patented claims, can be used as high-accuracy mechanical formula (no hydraulic pressure) force measuring machine:
First ZL99 2 59068.0, a kind of LOAD CELLS appliance special for detecting: the LOAD CELLS appliance special for detecting is made up of body, frame, LOAD CELLS, actuating unit pressing mechanism and operation instrument.Between frame and bearing platform table top, the compression displacement of being made up of some springs increases a times mechanism; The actuating unit of forming by controllable motor and cycloidal-pin wheel speed reduction unit, when the pressing mechanism that drive is made up of screw rod and nut pressurizes automatically, the spring that compression displacement increases in times mechanism shrinks under pressure, and the frame displacement is big than the tens of multiplications of sensor distortion itself, thereby carries out pressure control easily.Simultaneously, between the base of body and bearing platform, form sensor groups, can significantly improve measuring accuracy with some LOAD CELLS.
It two is Shens 99127549.7, a kind of electronic crane scale appliance special for detecting: the electronic crane scale appliance special for detecting mainly is made up of body, frame, LOAD CELLS, actuating unit, pressing mechanism and operation instrument.This body is made up of base and bearing platform, and the sensor groups that some LOAD CELLS are formed is placed between base and the bearing platform; Frame is a door type, forming clamping device by adjustment screw rod, handwheel and anchor clamps on housiung separator can be by test product adjusted size relevant position, this clamping device can be done 360 ° of revolutions around the cubing axial line in the crossbeam hole simultaneously, hangs the requirement of title by standard GB 11883-89 rotary test to satisfy electronics; Actuating unit is fixed on the body base, is made of controllable motor and cycloidal-pin wheel speed reduction unit, and the pressing mechanism of being made up of screw rod and nut is controlled automatically.
These two kinds of inventions are very close products.Find in the practice that when the pressing mechanism that adopts the direct drive of the actuating unit of being made up of controllable motor and cycloidal-pin wheel speed reduction unit to be made up of screw rod and nut pressurizeed automatically, this mechanism was complicated and very big; At this moment the cycloidal-pin wheel speed reduction unit is run counter to design general knowledge and is squeezed installation, and the not smooth equipment of lubricant passage way damages easily; The actuating unit that controllable motor and cycloidal-pin wheel speed reduction unit are formed is placed in the underground dell, and installation, maintenance is extremely inconvenient; Because weighing is very big, volume was very huge when the compression displacement of being made up of some springs that above-mentioned patent adopts increased in times mechanism the common stage clip of use.When frame and complete machine become one, must dismantle frame at the cubing timing signal, very inconvenient.
Summary of the invention
The cycloidal-pin wheel speed reduction unit is squeezed installation damage easily in the above-mentioned dynameter in order to overcome, and the actuating unit installation, maintenance is the significant deficiency of inconvenience extremely, the invention provides the scaling method of a kind of high-accuracy mechanical formula (no hydraulic pressure) force measuring machine and this cubing.The actuating unit that the stepper motor of this force measuring machine and cycloidal-pin wheel speed reduction unit are formed is placed on the support top of body outside, and the cycloidal-pin wheel speed reduction unit is by design general knowledge normal mounting, and the unimpeded equipment of lubricant passage way is not fragile; The equipment installation, maintenance is extremely convenient.Use whole fast-assembling frame can make things convenient for the staking-out work of force measuring machine.
The technical solution adopted for the present invention to solve the technical problems is:
High-accuracy mechanical formula force measuring machine mainly increases times mechanism by body, frame, LOAD CELLS group, actuating unit, pressing mechanism, compression displacement and the operation instrument is formed; This body is made up of base and bearing platform, and the LOAD CELLS group is placed between base and the bearing platform; Between four column frames and bearing platform table top, the compression displacement of being made up of the disk spring group increases a times mechanism; The staking-out work of force measuring machine for convenience, above four column frames of bearing platform table top and compression displacement increase a times mechanism and form whole fast-assembling frame; Actuating unit is made of stepper motor and cycloidal-pin wheel speed reduction unit and is fixed on above the body base; Pressing mechanism is made up of pressurization screw rod and nut, and is subjected to force direction with the force transferring lever change; The disk spring that increases in times mechanism in the displacement of pressure lower compression shrinks, and makes the displacement of fast-assembling frame big than the tens of multiplications of sensor distortion itself, helps measuring accuracy is carried out accurate automatic indexing, and compression displacement increases a times mechanism and also dwindles greatly.
The scaling method of high-accuracy mechanical formula force measuring machine of the present invention is:
Four column frames and compression displacement are increased the whole fast-assembling frame removal that times mechanism forms,, the specific weight frame is installed on the bearing platform table top when bearing platform table top loaded area hour.On the counterweight frame, can demarcate as demarcating the normal loading and unloading counterweight of ordinary electronic weighing apparatus.
Good effect of the present invention is:
After pressing mechanism used the force transferring lever change to be subjected to force direction, the cycloidal-pin wheel speed reduction unit was by design general knowledge normal mounting, and the unimpeded equipment of lubricant passage way is not fragile; The actuating unit that controllable motor and cycloidal-pin wheel speed reduction unit are formed is placed on the body outside, and installation, maintenance is extremely convenient; Because the installation of force transferring lever makes the output torque of required cycloidal-pin wheel speed reduction unit and reduction gear ratio only for intrinsic 1/5 simultaneously, stepper motor of selecting for use and cycloidal-pin wheel speed reduction unit volume-diminished are 2/5 of former patent; The installation of force transferring lever has also reduced the required ratio of compression of mechanism's stroke, and use disk spring this moment, 1/16 when making compression displacement increase times mechanism's volume to be kept to the common stage clip of former use, and measuring accuracy is carried out accurate automatic indexing number can reach 6.4 * 10 easily
5
Because four column frames 5 and compression displacement are increased the whole fast-assembling frame that times mechanism forms, the calibrating device required time is shortened greatly, also improved the bearing accuracy when repeating frame is installed.
The present invention greatly reduces the volume and weight of force measuring machine, has improved the precision of force measuring machine, has reduced cost.
Description of drawings
Accompanying drawing is embodiments of the invention:
Fig. 1, high-accuracy mechanical formula force measuring machine outside drawing.
Fig. 2, high-accuracy mechanical formula force measuring machine structural representation.
Among the figure: 1, base, 2, the LOAD CELLS group, 3, bearing platform, 4, disk spring group, 5, the frame short beam, 6, auxiliary black iron, 7, lower clamp, 8, four column frames, 9, go up anchor clamps, 10, handle, 11, the frame crossbeam, 12, adjust screw rod, 13, operation instrument, 14, stepper motor, 15, the cycloidal-pin wheel speed reduction unit, 16, nut, 17, the pressurization screw rod, 18, force transferring lever.
Embodiment
Below in conjunction with accompanying drawing the present invention is once described:
High-accuracy mechanical formula force measuring machine increases times mechanism by body, frame, LOAD CELLS group 2, actuating unit, pressing mechanism, compression displacement and operation instrument 13 is formed.Body is made up of base 1 and bearing platform 3, and the sensor groups 2 of four LOAD CELLS compositions is placed between base 1 and the bearing platform 3; Four column frames 8 are on bearing platform 3 table tops; Between four column frames 8 and bearing platform 3 table tops, the compression displacement of being made up of four disk spring groups 4 increases a times mechanism; Be equipped with on the four column housiung separators 11 by adjust screw rod 12, handle 10, on the clamping device formed of anchor clamps 9, can be by testee adjusted size relevant position, this clamping device also can be around 360 ° of revolutions of appliance special for detecting axle center do in the hole of frame crossbeam 11; The staking-out work of force measuring machine for convenience, above four column frames 8 of bearing platform 3 table tops and compression displacement increase a times mechanism and form whole fast-assembling frame; Actuating unit is made up of stepper motor 14 and cycloidal-pin wheel speed reduction unit 15, is installed in the top of base 1; Pressing mechanism is made up of pressurization screw rod 17 and nut 16, and is subjected to force direction with force transferring lever 18 changes; Lower clamp 7 is coupled to each other with power transmission lever 18, is used for the clamping test product; Hang when claiming when detecting pulling force sensor or electronics, tested part is installed between the lower clamp 7 of the last anchor clamps 9 of frame and lever; Auxiliary black iron 6 is placed on the short fine strain of millet 5 in four column frames, 8 both sides, when the detected pressures sensor, places testee with auxiliary black iron 6, with special pressing plate pressure transducer is pressurizeed again.In the testing process, the disk spring group 4 that compression displacement increases in times mechanism is shunk under pressure, makes 8 displacements of four column frames big than the tens of multiplications of sensor distortion itself, helps measuring accuracy is carried out accurate automatic indexing.The very light measuring accuracy value that reaches of embodiment is 640,000/.
The scaling method of high-accuracy mechanical formula force measuring machine of the present invention is:
Four column frames 8 and compression displacement are increased the whole fast-assembling frame removal that times mechanism forms,, the specific weight frame is installed on the bearing platform table top when bearing platform table top loaded area hour.On the counterweight frame, can demarcate with reference to the scaling method that Shen 99127549.7 is narrated as demarcating the normal loading and unloading counterweight of ordinary electronic weighing apparatus.
Claims (4)
1, a kind of high-accuracy mechanical formula force measuring machine, mainly by body, frame, LOAD CELLS group, actuating unit, pressing mechanism, compression displacement increase times mechanism and the operation instrument form, it is characterized in that: actuating unit is made of stepper motor and cycloidal-pin wheel speed reduction unit and is fixed on above the body base, pressing mechanism is made up of pressurization screw rod and nut, and is subjected to force direction with the force transferring lever change.
2, high-accuracy mechanical formula force measuring machine as claimed in claim 1 is characterized in that: the bearing platform table top increases a times mechanism with upper spider and compression displacement and forms whole fast-assembling frame.
3, high-accuracy mechanical formula force measuring machine as claimed in claim 1 or 2 is characterized in that: the spring that compression displacement increases in times mechanism is a disk spring.
4, a kind of scaling method of high-accuracy mechanical formula force measuring machine, it is characterized in that: be that frame and compression displacement are increased the whole fast-assembling frame removal that times mechanism forms, when bearing platform table top loaded area hour, the specific weight frame is installed on the bearing platform table top, on the counterweight frame, can be demarcated as demarcating the normal loading and unloading counterweight of ordinary electronic weighing apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03126108 CN1458504A (en) | 2003-04-04 | 2003-04-04 | High accuracy mechanical dynamo-meter and calibrating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03126108 CN1458504A (en) | 2003-04-04 | 2003-04-04 | High accuracy mechanical dynamo-meter and calibrating method |
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| CN1458504A true CN1458504A (en) | 2003-11-26 |
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| CN 03126108 Pending CN1458504A (en) | 2003-04-04 | 2003-04-04 | High accuracy mechanical dynamo-meter and calibrating method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156022A (en) * | 2011-05-23 | 2011-08-17 | 重庆大学 | Stress sensor calibration system |
| CN101451897B (en) * | 2008-12-24 | 2012-10-10 | 中国航空工业第一集团公司北京长城计量测试技术研究所 | Electromagnetic type small force value standard apparatus |
| CN104359605A (en) * | 2014-11-18 | 2015-02-18 | 安徽省芜湖仪器仪表研究所 | Device and method for detecting linear force output of idling motor |
| CN105466607A (en) * | 2015-11-17 | 2016-04-06 | 沈阳工业大学 | Transformer coil short-circuit mechanical force test system and test method thereof |
| CN108254115A (en) * | 2018-01-29 | 2018-07-06 | 大连交通大学 | A kind of cycloidal pin teeth engaging stress test device |
-
2003
- 2003-04-04 CN CN 03126108 patent/CN1458504A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451897B (en) * | 2008-12-24 | 2012-10-10 | 中国航空工业第一集团公司北京长城计量测试技术研究所 | Electromagnetic type small force value standard apparatus |
| CN102156022A (en) * | 2011-05-23 | 2011-08-17 | 重庆大学 | Stress sensor calibration system |
| CN102156022B (en) * | 2011-05-23 | 2013-03-27 | 重庆大学 | Stress sensor calibration system |
| CN104359605A (en) * | 2014-11-18 | 2015-02-18 | 安徽省芜湖仪器仪表研究所 | Device and method for detecting linear force output of idling motor |
| CN105466607A (en) * | 2015-11-17 | 2016-04-06 | 沈阳工业大学 | Transformer coil short-circuit mechanical force test system and test method thereof |
| CN108254115A (en) * | 2018-01-29 | 2018-07-06 | 大连交通大学 | A kind of cycloidal pin teeth engaging stress test device |
| CN108254115B (en) * | 2018-01-29 | 2024-02-02 | 大连交通大学 | Cycloidal pin gear meshing stress testing device |
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