CN201688930U - Constant arm lever - Google Patents
Constant arm lever Download PDFInfo
- Publication number
- CN201688930U CN201688930U CN2010202000395U CN201020200039U CN201688930U CN 201688930 U CN201688930 U CN 201688930U CN 2010202000395 U CN2010202000395 U CN 2010202000395U CN 201020200039 U CN201020200039 U CN 201020200039U CN 201688930 U CN201688930 U CN 201688930U
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- Prior art keywords
- lever
- arm
- force
- arc
- arc sections
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Abstract
The utility model discloses a constant arm lever. The middle part of the lever is in a hinging way; both ends of the lever are respectively provided with an arc part, and the two arc parts use the hinging point of the lever as the circle center. During use, one end of the constant arm lever is stressed; the ends of the lever are provided with the arc parts, and the arc parts use the hinging point as the circle center; therefore, the force exerting on the arc parts always keeps in the direction of the tangent of the arc; in this way, the length of the arm exerting force is constant and is always the radius of the arc; the length of the arm is not related with the rotating angle of the arm; a standard-force sensor is installed in the stress direction to obtain load-force data, so as to conveniently calculate torque value.
Description
Technical field
The utility model belongs to a kind of torque machine, particularly a kind of torque machine lever that is specifically designed to torque measurement or produces moment of torsion.
Background technology
Torque machine is to produce load with gravity or additionaling power that counterweight produces, by arm lever mechanism moment automatically is added on the checking matter by predefined procedure, obtains torque value by the load that applies and the product of lever arm of force.
The arm lever of present torque machine generally adopts framed structure, hangs the counterweight of some on the arm of force, by the effect generation standard torque value of arm lever.Counterweight or actuating unit and lever be connected version on the limit cutter that generally adopts counterweight or actuating unit to hang over lever.
Such arm lever brings following problem:
1) lever need be replied equilibrium state, so need the configuration levelling device to be used for adjusting lever balance, the structure more complicated.
2) there is certain error in the judgement of lever balance, influences testing result.
3) lever adjustment, the time ratio that needs is more, and efficiency ratio is lower.
4) because the machining precision of knife and counterweight are swung the problem that causes limit cutter disalignment, can exert an influence to arm of force length, thereby influence final detection result.
The utility model content
At above-mentioned the deficiencies in the prior art, the technical problems to be solved in the utility model provides a kind of lever of constant force arm, to solve the complex structure that existing torque sensor code test machine lever exists, inefficiency, the problem that the testing result reliability is low.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
Hinged in the middle of a kind of constant force arm bar, lever, the two ends of described lever respectively are provided with an arc sections, and described two arc sections are the center of circle with the pin joint of described lever.
Preferably, the radius of described two arc sections equates.
Preferably, on the loading force direction of described arc sections, the proof force sensor is housed.
Technique scheme has following beneficial effect: this constant force arm bar end in use is stressed, because the end of lever is provided with arc sections, and arc sections is to be the center of circle with the pin joint, therefore the power that is applied on the arc sections remains at the circular arc tangential line direction, the arm of force length that applies power like this will remain unchanged, be always the radius of arc sections, make the length of the arm of force just irrelevant with the corner of the arm of force.Be subjected to the proof force sensor is housed on the force direction, be used for reading the size of the power of applying.And lever do not need to reply balance and just can finish test, no longer needs extra levelling gear, simplified structure, improved detection efficiency greatly.
In sum, the utility model has following advantage: 1. and simple in structure, do not need extra levelling device, reduced cost; 2. no longer need the time leveling, promoted efficient; 3. the arm of force is not influenced by counterweight and knife machining precision, remains unchanged, and has improved accuracy of detection.4. obtain data by the proof force sensor, easily the calculated torque value.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of instructions, below with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the stressed synoptic diagram of the utility model when stressed.
Embodiment
As shown in Figure 1, hinged in the middle of the lever 1 of this constant force arm bar, its A end is provided with an arc sections 11, the B end is provided with an arc sections 12, arc sections 11,12 is the center of circle with the pin joint O of lever 1, and the radius of arc sections 11,12 is equal, that is to say that pin joint O is positioned at the middle of lever 1.Certain pin joint O as required also can not be positioned at the middle of lever 1.
As shown in Figure 2, the A of lever 1 and B two ends can apply load p and the F along the circular arc tangential line direction, are used for the control torque test and load forward or backwards, and the power that applies equates, be easy to control, proof force sensor 21 is housed on the P loading direction, proof force sensor 22 is housed on the F loading direction.At the trial, this constant force arm bar one end is stressed, because the end of lever 1 is provided with arc sections, and arc sections is to be the center of circle with pin joint O, therefore the power that is applied on the arc sections remains at the circular arc tangential line direction, the length that applies the arm of force L of power like this will remain unchanged, and is always the length of the radius R of arc sections, makes the length of this lever arm of force when stressed and the corner of the arm of force have nothing to do.And lever do not need to reply balance and just can finish test, no longer needs extra levelling gear, simplified structure, directly obtains data computation by the proof force sensor and goes out moment of torsion, improved detection efficiency greatly.
In sum, the utility model has following advantage: 1) simple in structure, do not need extra levelling device, and reduced cost; 2) no longer need the time leveling, promoted efficient; 3) arm of force is not influenced by counterweight and knife machining precision, remains unchanged, and has improved accuracy of detection.4) obtain data by the proof force sensor, easily the calculated torque value.
More than a kind of constant force arm bar that the utility model embodiment is provided be described in detail; for one of ordinary skill in the art; thought according to the utility model embodiment; part in specific embodiments and applications all can change; in sum; this description should not be construed as restriction of the present utility model, and all any changes of being made according to the utility model design philosophy are all within protection domain of the present utility model.
Claims (3)
1. hinged in the middle of constant force arm bar, lever, it is characterized in that: the two ends of described lever respectively are provided with an arc sections, and described two arc sections are the center of circle with the pin joint of described lever.
2. constant force arm bar according to claim 1 is characterized in that: on the loading force direction of described arc sections the proof force sensor is housed.
3. constant force arm bar according to claim 1 is characterized in that: the radius of described two arc sections equates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202000395U CN201688930U (en) | 2010-05-20 | 2010-05-20 | Constant arm lever |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202000395U CN201688930U (en) | 2010-05-20 | 2010-05-20 | Constant arm lever |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201688930U true CN201688930U (en) | 2010-12-29 |
Family
ID=43377210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202000395U Expired - Fee Related CN201688930U (en) | 2010-05-20 | 2010-05-20 | Constant arm lever |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201688930U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288341A (en) * | 2011-05-11 | 2011-12-21 | 北京市三一重机有限公司 | Torque measuring device |
| CN104568237A (en) * | 2015-01-23 | 2015-04-29 | 合肥京东方光电科技有限公司 | Lever type pressure sensor |
| CN105953975A (en) * | 2016-07-19 | 2016-09-21 | 农业部南京农业机械化研究所 | Weight and lever type removable static calibration device and calibration method |
| CN106053046A (en) * | 2016-07-19 | 2016-10-26 | 农业部南京农业机械化研究所 | Soil bin test table |
| CN106197843A (en) * | 2016-08-31 | 2016-12-07 | 北京航天动力研究所 | A kind of on-site torsion calibration device |
| CN106248274A (en) * | 2016-10-11 | 2016-12-21 | 沈阳航天新光集团有限公司 | A kind of special moment of torsion detection tool device |
| CN114802552A (en) * | 2022-02-21 | 2022-07-29 | 上海钧正网络科技有限公司 | Two-wheeled vehicle |
-
2010
- 2010-05-20 CN CN2010202000395U patent/CN201688930U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288341A (en) * | 2011-05-11 | 2011-12-21 | 北京市三一重机有限公司 | Torque measuring device |
| CN104568237A (en) * | 2015-01-23 | 2015-04-29 | 合肥京东方光电科技有限公司 | Lever type pressure sensor |
| WO2016115827A1 (en) * | 2015-01-23 | 2016-07-28 | 京东方科技集团股份有限公司 | Pressure sensor |
| CN105953975A (en) * | 2016-07-19 | 2016-09-21 | 农业部南京农业机械化研究所 | Weight and lever type removable static calibration device and calibration method |
| CN106053046A (en) * | 2016-07-19 | 2016-10-26 | 农业部南京农业机械化研究所 | Soil bin test table |
| CN106197843A (en) * | 2016-08-31 | 2016-12-07 | 北京航天动力研究所 | A kind of on-site torsion calibration device |
| CN106248274A (en) * | 2016-10-11 | 2016-12-21 | 沈阳航天新光集团有限公司 | A kind of special moment of torsion detection tool device |
| CN114802552A (en) * | 2022-02-21 | 2022-07-29 | 上海钧正网络科技有限公司 | Two-wheeled vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20160520 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |