CN107764468B - Torque spanner calibrating device - Google Patents
Torque spanner calibrating device Download PDFInfo
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- CN107764468B CN107764468B CN201710957770.9A CN201710957770A CN107764468B CN 107764468 B CN107764468 B CN 107764468B CN 201710957770 A CN201710957770 A CN 201710957770A CN 107764468 B CN107764468 B CN 107764468B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 80
- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000003556 assay Methods 0.000 claims 5
- 238000012795 verification Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
- G01L25/003—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency for measuring torque
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission Devices (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a torque wrench calibrating device, which comprises a bolt simulator and a loading mechanism, wherein the bolt simulator comprises a running-in part and a rotating part with fixed axial positions, the rotating part is provided with a torque input structure for being in force transmission fit with tested equipment, the rotating part is provided with a rotating part force transmission surface, the running-in part is provided with a running-in part force transmission surface in friction fit with the rotating part force transmission surface, the rotating part or the running-in part is provided with a loading end, the loading mechanism is provided with a loading mechanism output end for outputting loading force to the loading end so as to enable pressure to be generated between the running-in part force transmission surface and the rotating part force transmission surface, and the loading mechanism output end is provided with a joint bearing in series. The invention solves the problem that the existing verification process needs frequent screw withdrawal when bolts are used, so that the verification process is complex.
Description
Technical Field
The invention relates to a torque wrench calibrating device in the calibrating field.
Background
When detecting the detected equipment such as electric torque spanner, pneumatic torque spanner and the like, the detected equipment is carried out in a dynamic process, thus a dynamic load is required, meanwhile, the requirements of different torque angular displacement change rates (torque rate for short) still exist, and a component capable of providing the dynamic load is called a bolt simulator. As disclosed in publication No. CN204286666U, application name "portable power torque tool detector", the power torque tool detector includes a torque sensor for connecting an output shaft of the inspection apparatus, and the lower end of the torque sensor is connected with a bolt simulator including a bolt, a butterfly spring housing, a butterfly spring, and the like. When the device to be tested is tested, the torque sensor is used for applying the torque to the bolt in the bolt simulator, so that the pure machine only depends on the load simulation mode of the bolt, the torque rate is single, and the mechanical property is also constant under the condition that the temperature is not changed because the lead angle of the bolt, the friction coefficient of the friction pair of the metal piece and the elastic coefficient are constant. Because multiple sets of data of different bolt lead angles need to be tested, multiple bolt simulators are needed, for example, if six bolt lead angles are needed, six bolt simulators are needed to be provided, the detection cost is high, and the detection process is complex; in addition, when the bolt is adopted to provide a load, the bolt is required to be screwed in the axial direction, and when the bolt is detected, a continuous screwing and unscrewing process is required, so that the complexity of detection is increased, and the improvement of the detection efficiency is not facilitated.
Disclosure of Invention
The invention aims to provide a torque spanner calibrating device, which is used for solving the problem that the existing calibrating process is complicated due to the fact that bolts need to be frequently retracted in the existing calibrating process.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the torque spanner calibrating device comprises a bolt simulator and a loading mechanism, wherein the bolt simulator comprises a running-in part and a rotating part with fixed axial positions, the rotating part is provided with a torque input structure for being in force transmission fit with inspected equipment, a rotating part force transmission surface taking the axis of the rotating part as a rotation axis is arranged on the rotating part, the running-in part is provided with a running-in part force transmission surface which is matched with the rotating part force transmission surface and in surface contact friction fit, the rotating part or the running-in part is provided with a loading end, the loading mechanism is provided with a loading mechanism output end for outputting loading force to the loading end so that pressure is generated between the running-in part force transmission surface and the rotating part force transmission surface, and the loading mechanism output end is provided with a joint bearing in series.
The force transmission surface of the rotating piece is arranged on the periphery of the rotating piece, the force transmission surface of the running-in piece is arranged on the inner wall of the running-in piece, the force transmission surface of the rotating piece and the force transmission surface of the running-in piece are at least one of conical surfaces, cylindrical surfaces, spherical surfaces or elliptical spherical surfaces which are coaxially arranged with the rotating piece, and the direction of the loading force is consistent with the radial direction of the rotating piece.
The torque input structure is arranged on the rotating piece, and the loading end is arranged on the running-in piece.
The rotary part force transmission surface comprises a cylindrical surface section and conical surface sections connected to the upper side and the lower side of the cylindrical surface section, the small diameter end of the conical surface section on the upper side faces upwards, the small diameter end of the conical surface section on the lower side faces downwards, and the running-in part force transmission surface is matched with the rotary part force transmission surface in shape.
The running-in piece comprises a first running-in piece and a second running-in piece, wherein the first running-in piece and the second running-in piece are arranged at intervals along the circumferential direction of the rotating piece, the first running-in piece is fixed, and the loading end is arranged on the second running-in piece.
The force transmission surface of the rotating member is a plane perpendicular to the axis of the rotating member or a conical surface, a spherical surface or an elliptic spherical surface which are coaxially arranged with the rotating member, and the direction of the loading force is consistent with the axial direction of the rotating member.
The running-in piece comprises an upper running-in piece and a lower running-in piece, the force transmission surface of the rotating piece comprises an upper force transmission surface of the rotating piece and a lower force transmission surface of the rotating piece, which are arranged at the upper end and the lower end of the rotating piece, the force transmission surface of the running-in piece comprises an upper running-in piece force transmission surface which is arranged on the upper running-in piece and is in rotary contact with the upper force transmission surface of the rotating piece, and the force transmission surface of the running-in piece further comprises a lower running-in piece force transmission surface which is arranged on the lower running-in piece and is in rotary contact with the lower force transmission surface of the rotating piece.
The loading mechanism comprises a loading motor and a loading force conversion cylinder, wherein a piston cavity of the loading force conversion cylinder comprises a large-diameter section and a small-diameter section connected to one end of the large-diameter end, a large-diameter section piston is arranged in the large-diameter section, a small-diameter section piston is arranged in the small-diameter section, one piston is in transmission connection with the loading motor, and the other piston is in transmission connection with the loading end.
The beneficial effects of the invention are as follows: according to the invention, the axial position of the rotating member is fixed, when the device is used, the rotating member or the running-in member is loaded through the loading mechanism, the loading force acts on the running-in member force transmission surface and the rotating member force transmission surface to form a simulation load, the rotating member rotates under the driving of the tested equipment, the testing of the tested equipment is realized, the rotating member does not have precession action in the testing process, so that frequent wire withdrawal is not needed, and the testing efficiency is improved. On the other hand, due to the existence of the installation error, the direction of the loading force and the design direction cannot be guaranteed to be completely consistent, if the bolt simulator receives the oblique acting force, the final verification result is inaccurate, and the joint bearing which is arranged on the output end of the loading mechanism in series can reduce the requirement on the installation precision of the loading mechanism, so that the influence on the verification result due to the fact that the direction of the loading force is inconsistent with the design direction is avoided.
Drawings
FIG. 1 is a schematic diagram of a torque wrench verification device according to example 1 of the present invention;
FIG. 2 is an exploded view of the bolt simulator of FIG. 1;
FIG. 3 is a schematic view of a torque wrench verification device according to example 2 of the present invention;
FIG. 4 is an exploded view of the bolt simulator of FIG. 3;
fig. 5 is a schematic diagram of the general bolt simulator of example 3 of the torque wrench verification device of the present invention.
Detailed Description
Example 1 of the torque wrench verification device is shown in fig. 1 to 2: the testing device comprises a testing device support (not shown in the figure), a loading mechanism and a bolt simulator are arranged on the testing device support, the bolt simulator comprises a running-in piece and a rotating piece 3, the running-in piece comprises an upper running-in piece 2 and a lower running-in piece 4, the rotating piece 3 comprises a central part, an upper column and a lower column which are arranged at the upper end and the lower end of the central part, the upper end of the upper column penetrates out from the central position of the upper running-in piece to form a torque input structure for force transmission fit with tested equipment, and the lower column penetrates through the central position of the lower rotating piece. The upper end of the central part is provided with a rotating part upper force transmission surface 12, the lower end of the central part is provided with a rotating part lower force transmission surface 13, the upper running-in part 2 is provided with an upper running-in part force transmission surface 11 which is in rotary contact with the rotating part upper force transmission surface 12 and is in shape adaptation, the lower running-in part 4 is provided with a lower running-in part force transmission surface 14 which is in rotary contact with the rotating part lower force transmission surface 13 and is in shape adaptation, the upper running-in part force transmission surface is a conical surface with a large diameter end facing downwards, and the lower running-in part force transmission surface is a conical surface with a large diameter end facing upwards. The lower running-in piece is further provided with a loading end for being axially loaded by a loading mechanism, the loading mechanism comprises a loading motor 10 and a loading force conversion cylinder, a piston cavity of the loading force conversion cylinder comprises a large-diameter section 6 and a small-diameter section 7 connected to one end of the large-diameter section, a large-diameter section piston 201 is arranged in the large-diameter section, a small-diameter section piston 211 is arranged in the small-diameter section, a piston at a lower position, namely the small-diameter section piston 211, is in transmission connection with the loading motor 10 through a screw nut mechanism, the screw nut mechanism comprises a screw rod 9 connected with the motor and a screw nut 8 in spiral fit with the screw rod, the piston at an upper position, namely the large-diameter section piston 201, is in transmission connection with the loading end on the lower running-in piece, a transmission rod between the large-diameter section piston 201 and the loading end forms the loading mechanism output end of the loading mechanism, and a joint bearing 5 is arranged on the transmission rod in a series. The loading motor can convert the rotary motion into the linear motion through the screw rod and nut mechanism, the screw nut 8 with the linear motion pushes the small-diameter section piston to move, pressure oil (or gas) is arranged between the small-diameter section piston and the large-diameter section piston, the acting force of the running-in piece downwards is determined through the end surface ratio of the small-diameter section piston to the large-diameter section piston, when the acting force needs to be changed, only another loading force conversion cylinder needs to be replaced, the loading force conversion cylinder is simple and convenient to manufacture, and compared with the loading motor for directly purchasing different loading forces, the cost is greatly reduced. The axial loading force of the loading mechanism can act on the lower force transmission surface of the rotating piece, the lower force transmission surface of the running-in piece and the upper force transmission surface of the rotating piece, so that the bolt load simulation is realized, the rotating piece does not precess, and the problem that the work efficiency is affected due to frequent wire withdrawal can be avoided. The calibrating device support is also provided with two bearings which are arranged at intervals up and down, the bearings can play a role in centering the rotating piece, and the upper column and the lower column of the rotating piece are respectively matched with the corresponding bearings. During the inspection, torque wrench passes through torque sensor and gives the rotating member application of force, if torque wrench's position is improper, torque wrench can give the calibrating installation support through the bearing to the spurious force of rotating member, bears this spurious force by the calibrating installation support, further assurance verification precision.
In other embodiments of the invention: the loading mechanism can also be in the form of a mechanism such as a spring, a driving cylinder and the like which can provide axial acting force; the running-in piece can be only one; the force transmission surface of the rotating part and the force transmission surface of the running-in part can also be a plane which is perpendicular to the axis of the rotating part; bearings may be absent; the force transmission surface of the rotating member can also be a matching surface which takes the axis of the rotating member as the rotation axis, such as a spherical surface, an elliptic spherical surface and the like.
Example 2 of the torque wrench verification apparatus is shown in fig. 3 to 4: unlike embodiment 1, the loading mechanism in this embodiment is a radial direction recording mechanism, and the loading force direction of the loading mechanism coincides with the radial direction of the rotating member. The running-in piece comprises a first running-in piece 15 and a second running-in piece 16 which are circumferentially distributed on the periphery of the rotating piece, the first running-in piece is fixed on the calibrating device bracket, and the loading end is arranged on the second running-in piece. The outer peripheral surface of the central part of the rotating member is a rotating member force transmission surface, the rotating member force transmission surface comprises a cylindrical surface section 19 coaxially arranged with the rotating member and conical surface sections connected to the upper side and the lower side of the cylindrical surface section, the small diameter end of the conical surface section 20 on the upper side faces upwards, and the small diameter end of the conical surface section 18 on the lower side faces downwards. The first running-in part and the second running-in part are provided with running-in part force transmission surfaces 17 matched with the rotating part force transmission surfaces, and the shape not only can realize radial force transmission, but also can realize axial positioning of the rotating part relative to the running-in parts.
Embodiment 3 of the torque wrench verification apparatus as shown in fig. 5, embodiment 3 differs from embodiment 2 in that the rotary member force transmitting surface 21 is a cylindrical surface coaxially provided with the rotary member 1.
Claims (6)
1. A torque spanner calibrating device, its characterized in that: comprises a bolt simulator and a loading mechanism, wherein the bolt simulator comprises a running-in part and a rotating part with fixed axial position, the rotating part is provided with a torque input structure for being in force transmission fit with tested equipment, the rotating part is provided with a rotating part force transmission surface which takes the axis of the rotating part as a rotation axis, the running-in part is provided with a running-in part force transmission surface which is matched with the rotating part force transmission surface and in surface contact friction fit, the running-in part is provided with a loading end, the loading mechanism is provided with an output end of the loading mechanism which outputs loading force to the loading end so as to enable pressure to be generated between the running-in part force transmission surface and the rotating part force transmission surface, the output end of the loading mechanism is connected with a joint bearing in series, the running-in part comprises an upper running-in part and a lower running-in part, the rotating part comprises a central part, an upper column and a lower column which are arranged at the upper end and the lower end of the central part, the upper end of the upper column penetrates out from the center of the upper running-in piece to form a torque input structure for force transmission fit with tested equipment, the loading mechanism comprises a loading motor and a loading force conversion cylinder, a piston cavity of the loading force conversion cylinder comprises a large-diameter section and a small-diameter section connected to one end of the large-diameter section, a large-diameter section piston is arranged in the large-diameter section, a small-diameter section piston is arranged in the small-diameter section, a piston at a lower position, namely the small-diameter section piston, is in transmission connection with the loading motor through a screw nut mechanism, the screw nut mechanism comprises a screw rod connected with the motor and a nut in screw fit with the screw rod, and a piston at an upper position, namely the large-diameter section piston, is in transmission connection with a loading end on the lower running-in piece.
2. The assay device according to claim 1, wherein: the force transmission surface of the rotating piece is arranged on the periphery of the rotating piece, the force transmission surface of the running-in piece is arranged on the inner wall of the running-in piece, the force transmission surface of the rotating piece and the force transmission surface of the running-in piece are at least one of conical surfaces, cylindrical surfaces, spherical surfaces or elliptical spherical surfaces which are coaxially arranged with the rotating piece, and the direction of the loading force is consistent with the radial direction of the rotating piece.
3. The assay device according to claim 2, wherein: the rotary part force transmission surface comprises a cylindrical surface section and conical surface sections connected to the upper side and the lower side of the cylindrical surface section, the small diameter end of the conical surface section on the upper side faces upwards, the small diameter end of the conical surface section on the lower side faces downwards, and the running-in part force transmission surface is matched with the rotary part force transmission surface in shape.
4. The assay device according to claim 2, wherein: the running-in piece comprises a first running-in piece and a second running-in piece, wherein the first running-in piece and the second running-in piece are arranged at intervals along the circumferential direction of the rotating piece, the first running-in piece is fixed, and the loading end is arranged on the second running-in piece.
5. The assay device according to claim 1, wherein: the force transmission surface of the rotating member is a plane perpendicular to the axis of the rotating member or a conical surface, a spherical surface or an elliptic spherical surface which are coaxially arranged with the rotating member, and the direction of the loading force is consistent with the axial direction of the rotating member.
6. The assay device according to claim 5, wherein: the running-in piece force transmission surface comprises an upper running-in piece force transmission surface which is arranged on the upper end and the lower end of the rotating piece and is in rotary contact with the upper running-in piece force transmission surface of the rotating piece, and the running-in piece force transmission surface also comprises a lower running-in piece force transmission surface which is arranged on the lower running-in piece and is in rotary contact with the lower running-in piece force transmission surface of the rotating piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710957770.9A CN107764468B (en) | 2017-10-16 | 2017-10-16 | Torque spanner calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710957770.9A CN107764468B (en) | 2017-10-16 | 2017-10-16 | Torque spanner calibrating device |
Publications (2)
| Publication Number | Publication Date |
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| CN107764468A CN107764468A (en) | 2018-03-06 |
| CN107764468B true CN107764468B (en) | 2024-01-19 |
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| CN201710957770.9A Active CN107764468B (en) | 2017-10-16 | 2017-10-16 | Torque spanner calibrating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108375450B (en) * | 2018-04-26 | 2024-04-16 | 郑州东辰科技有限公司 | Torque spanner calibrating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6609407B1 (en) * | 2000-11-06 | 2003-08-26 | Ingersoll-Rand Company | Test apparatus for a wrench used to test previously tightened fasteners |
| CN101655402A (en) * | 2009-08-31 | 2010-02-24 | 重庆长安汽车股份有限公司 | Method for testing preload of engine connecting rod bolt and special tool thereof |
| CN101936796A (en) * | 2010-04-28 | 2011-01-05 | 上海宝宜威机电有限公司 | Intelligent loaded torque calibration system |
| CN203178033U (en) * | 2013-03-12 | 2013-09-04 | 中国计量科学研究院 | Torque spanner detecting instrument |
| CN103471768A (en) * | 2013-10-14 | 2013-12-25 | 哈尔滨工业大学 | Multifunctional calibrating and loading device for torque multiplier |
| CN106706207A (en) * | 2016-11-10 | 2017-05-24 | 合肥工业大学 | Step force generating device for dynamic calibration of force sensor |
-
2017
- 2017-10-16 CN CN201710957770.9A patent/CN107764468B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6609407B1 (en) * | 2000-11-06 | 2003-08-26 | Ingersoll-Rand Company | Test apparatus for a wrench used to test previously tightened fasteners |
| CN101655402A (en) * | 2009-08-31 | 2010-02-24 | 重庆长安汽车股份有限公司 | Method for testing preload of engine connecting rod bolt and special tool thereof |
| CN101936796A (en) * | 2010-04-28 | 2011-01-05 | 上海宝宜威机电有限公司 | Intelligent loaded torque calibration system |
| CN201892602U (en) * | 2010-04-28 | 2011-07-06 | 上海宝宜威机电有限公司 | Intelligent loading-type torque calibration system |
| CN203178033U (en) * | 2013-03-12 | 2013-09-04 | 中国计量科学研究院 | Torque spanner detecting instrument |
| CN103471768A (en) * | 2013-10-14 | 2013-12-25 | 哈尔滨工业大学 | Multifunctional calibrating and loading device for torque multiplier |
| CN106706207A (en) * | 2016-11-10 | 2017-05-24 | 合肥工业大学 | Step force generating device for dynamic calibration of force sensor |
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| CN107764468A (en) | 2018-03-06 |
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Effective date of registration: 20231206 Address after: Room 10501, Unit 1, Building 3, Poly Tianyue, No. 736 Shaowen Road, High tech Zone, Xi'an City, Shaanxi Province, 710000 Applicant after: Xi'an Tubian Optoelectronic Technology Co.,Ltd. Address before: 450006 Unit 9, 901, Unit 1, No. 333 Longhai West Road, Zhongyuan District, Zhengzhou City, Henan Province Applicant before: ZHENGZHOU DONGCHEN SCIENCE & TECHNOLOGY Co.,Ltd. |
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