CN115452233A - Pretightening force detection device of threaded fastener - Google Patents
Pretightening force detection device of threaded fastener Download PDFInfo
- Publication number
- CN115452233A CN115452233A CN202210972126.XA CN202210972126A CN115452233A CN 115452233 A CN115452233 A CN 115452233A CN 202210972126 A CN202210972126 A CN 202210972126A CN 115452233 A CN115452233 A CN 115452233A
- Authority
- CN
- China
- Prior art keywords
- ring
- threaded fastener
- annular
- annular base
- rotating ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 239000007787 solid Substances 0.000 claims description 7
- 230000036316 preload Effects 0.000 claims 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 3
- 239000011888 foil Substances 0.000 description 7
- 238000012545 processing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
- G01L5/243—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed using washers
Abstract
The invention discloses a pretightening force detection device of a threaded fastener, which comprises an annular base, an annular strain gauge, a fixed ring and a rotating ring, wherein the annular base is provided with a groove; the upper part of the annular base is connected with a fixing ring, and the annular strain gauge is clamped between the annular base and the fixing ring; the rotating ring is arranged above the fixed ring and is rotatably connected with the fixed ring; the top of the fixed ring is also uniformly provided with a plurality of balls, and the bottom surface of the rotating ring is in contact with the balls. The invention has the advantages of novel design, simple structure, convenient detection, abrasion resistance and suitability for threaded fasteners of different specifications.
Description
Technical Field
The invention relates to the technical field of threaded fastener detection, in particular to a pretightening force detection device for a threaded fastener.
Background
In the scene of threaded connection, the pretightening force of a threaded fastener is an important assembly index, is directly related to the performances of sealing, electric conduction, heat conduction and the like of a product, and also determines the capabilities of looseness prevention, fatigue resistance and the like of the fastener, so that how to ensure that the pretightening force in bolt connection meets the requirement is very necessary.
In the prior art, theoretical calculation is mostly carried out according to parameters and materials of parts when the pretightening force of the threaded fastener is measured and calculated, only a wide number can be obtained, the actual use requirement is difficult to meet, and the accurate measurement and calculation generally can be realized by adopting special equipment in a laboratory, so that certain adverse effects are caused to actual construction and operation.
Although some detection devices capable of being applied to actual operation scenes appear on the market at the present stage, most of the detection devices are complex in structure and heavy in equipment, one detection device can only correspond to a threaded fastener of one specification, the application range is small, meanwhile, when the existing detection equipment is used, the threaded fastener is directly scraped in the rotation of the top end of the detector, the top end of the detector is scratched, the abrasion is aggravated, and the service life is short.
Based on the device, the device for detecting the pretightening force of the threaded fastener, which is small in damage and long in service life, has a wide application prospect.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the pretightening force detection device of the threaded fastener, which has the advantages of convenience in detection, abrasion resistance and suitability for threaded fasteners of different specifications.
(II) technical scheme
In order to realize the purposes of convenient detection, abrasion resistance and suitability for threaded fasteners of different specifications, the invention provides the following technical scheme:
the device for detecting the pretightening force of the threaded fastener is characterized by comprising an annular base, an annular strain gauge, a fixed ring and a rotating ring; wherein the content of the first and second substances,
a fixing ring is connected above the annular base, and the annular strain gauge is clamped between the annular base and the fixing ring;
the rotating ring is arranged above the fixed ring and is rotatably connected with the fixed ring; the top of the fixed ring is also uniformly provided with a plurality of balls, and the bottom surface of the rotary ring is in contact with the balls.
As a preferred technical scheme of the invention, a plurality of first buckles are uniformly arranged at the bottom of the fixing ring, a plurality of first clamping grooves which are correspondingly coupled with the first buckles one by one are uniformly formed on the inner wall of the annular base, and the annular base and the fixing ring are detachably connected through the buckling of the first buckles and the first clamping grooves.
As a preferable technical solution of the present invention, a plurality of second buckles are uniformly arranged at the bottom of the rotating ring, an annular second clamping groove coupled with the second buckles is formed in an inner wall of the fixing ring, and the rotating ring and the fixing ring are rotatably and detachably connected by buckling the second buckles with the second clamping grooves.
As a preferable technical solution of the present invention, the rotating ring is provided with a plurality of slots penetrating in the radial direction, each slot is inserted with an access board, the access board can move in and out in the radial direction of the rotating ring, and a tail board is fixedly installed at the tail end of the access board. As a preferable aspect of the present invention, the insertion groove is located at an upper middle portion of the rotating ring.
As a preferred technical scheme of the present invention, a controller and a display screen are further fixedly mounted on the surface of the annular base, an output end of the annular strain gauge is electrically connected with an input end of the controller, and an output end of the controller is electrically connected with an input end of the display screen.
As a preferable technical scheme of the invention, a rubber pad is fixedly arranged at the top of the rotating ring.
(III) advantageous effects
Compared with the prior art, the invention provides a pretightening force detection device of a threaded fastener, which has the following beneficial effects:
1. this threaded fastener's pretightning force detection device, during the use, insert the detector with the bolt from the detector top, the nut of bolt is taken at rotatory ring, the bolt passes the work piece that detector and needs to be connected and tightly overlaps with the nut, the bolt of screwing gradually, the foil gage can experience pressure promptly, the foil gage warp because of pressure production, resistance changes, and then the electric current in the circuit changes, processing module calculates the pressure size and demonstrates on the display screen according to the electric current size, it is convenient to detect, it is high-efficient convenient.
2. This threaded fastener's pretightning force detection device, rotatory ring is rotatory at solid fixed ring's top to make rotatory more stable, smooth through the ball, avoided direct rotatory scraping to solid fixed ring and foil gage, showing and reducing the equipment loss, improved foil gage and overall device's life greatly.
3. This threaded fastener's pretightning force detection device, the activity is inserted on rotatory ring and is equipped with a plurality of strap, detects the threaded fastener of small dimension time measuring, can push the strap in the rotatory ring, reduces rotatory ring's internal diameter to can detect the threaded fastener of small dimension promptly, application scope is wider.
4. This threaded fastener's pretightning force detection device can dismantle through first buckle and first draw-in groove between base and the solid fixed ring and be connected, can dismantle through second buckle and annular second draw-in groove between solid fixed ring and the rotatory ring and be connected, detachable design between each subassembly, and single part can be changed alone after damaging, has further improved the life of equipment.
Drawings
FIG. 1 is a perspective view of the overall structure of the present invention;
FIG. 2 is an exploded view of the overall structure of the present invention;
fig. 3 is a cross-sectional view of the overall structure of the present invention.
In the figure: 1. an annular base; 2. a display screen; 3. a controller; 4. an annular strain gage; 5. a fixing ring; 6. a first buckle; 7. a card slot; 8. a ball bearing; 9. a rotating ring; 10. a second buckle; 11. an annular groove; 12. a rubber pad; 13. a butt strap; 14. a tail plate.
Detailed Description
Example (b):
referring to fig. 1-3, a pretightening force detection device for a threaded fastener includes an annular base 1, a fixing ring 5 is detachably mounted above the annular base 1, an annular strain gauge 4 is clamped between the annular base 1 and the fixing ring 5, as shown in fig. 2, a plurality of first buckles 6 are uniformly arranged at the bottom of the fixing ring 5, a plurality of first clamping grooves 7 correspondingly coupled with the first buckles 6 one by one are uniformly arranged on the inner wall of the annular base 1, the annular base 1 and the fixing ring 5 can be fastened and connected by the first buckles 6 being clamped in the first clamping grooves 7, and the relative rotation of the annular base 1 and the fixing ring 5 can be prevented;
as shown in fig. 3, a rotating ring 9 is rotatably arranged above the fixed ring 5, balls 8 are uniformly arranged on the top of the fixed ring 5, when the detector is used, a bolt is inserted into the detector from the top end of the detector, a nut of the bolt is lapped on the rotating ring 9, the bolt penetrates through the detector and a workpiece to be connected and is tightly sleeved with a nut, the bolt is gradually screwed, the strain gauge 4 can sense pressure, the rotating ring 9 rotates on the top of the fixed ring 5, the rotation can be more stable and smooth through the balls 8, the nut is prevented from directly scraping the rotating of the fixed ring 5 and the strain gauge 4, the equipment loss is obviously reduced, and the service life of the strain gauge 4 and the whole device is greatly prolonged;
in this embodiment, the bottom of the first locking groove 7 is deeper, so that the first buckle 6 can continuously move downwards in the first locking groove 7 after being locked, and further the pressure of the fixing ring 5 on the strain gage 4 is self-adaptive;
as shown in fig. 3, a plurality of second buckles 10 are uniformly arranged at the bottom of the rotating ring 9, an annular second clamping groove 11 coupled with the second buckles 10 is formed in the inner wall of the fixed ring 5, the fixed ring 5 and the rotating ring 9 can be connected by clamping the second buckles 10 in the annular second clamping groove 11, and meanwhile, the rotating ring 9 can also rotate on the fixed ring 5 because the groove for limiting the second buckles 10 is an annular clamping groove;
in the embodiment, the annular base 1 and the fixed ring 5 are detachably connected through the first buckle 6, the fixed ring 5 and the rotating ring 9 are detachably connected through the second buckle 10, all components are detachably designed, and a single part can be independently replaced after being damaged, so that the service life of the equipment is further prolonged;
a plurality of (for example, 3 to 5) slots which are through in the radial direction are formed in the rotating ring 9, each slot is uniformly and movably inserted with a matching attachment strap 13, the slots and the attachment straps are in interference fit, tail plates 14 are fixedly installed at the tail ends of the plurality of attachment straps 13, when a small-sized threaded fastener is detected, the attachment straps 13 can be conveniently pushed into the rotating ring 9 through the tail plates 14, the inner diameter of the rotating ring 9 is reduced, the small-sized threaded fastener can be detected, the application range is wider, in order to avoid the nut from excessively extending into the rotating ring 9, in the embodiment, the attachment straps 13 are inserted at positions which are closer to the rotating ring 9;
in this embodiment, rubber pads 12 are fixedly disposed on the top of the rotating ring 9 and the top of the strap 13, so as to play a role of buffering, further reduce abrasion and prolong service life;
The working principle and the using process of the invention are as follows:
when the device is used, a bolt is inserted into the detector from the top end, a nut of the bolt is lapped on the rotating ring 9, the bolt penetrates through the detector and a workpiece to be connected and is tightly sleeved with the nut, the bolt is gradually screwed, the strain gauge 4 can sense pressure, the strain gauge 4 deforms due to the pressure, the resistance changes, and further the current in the circuit changes, the processing module calculates the pressure according to the current and displays the pressure on the display screen 2, and the device is convenient to detect, efficient and convenient;
the rotating ring 9 rotates at the top of the fixing ring 5, and the rotation is more stable and smooth through the balls 8, so that the direct rotating scraping of the fixing ring 5 and the strain gauge 4 is avoided, the equipment loss is obviously reduced, and the service life of the strain gauge 4 and the whole device is greatly prolonged;
a plurality of butt straps 13 are movably inserted on the rotating ring 9, when the small-specification threaded fastener is detected, the butt straps 13 can be pushed into the rotating ring 9, and the inner diameter of the rotating ring 9 is reduced, so that the small-specification threaded fastener can be detected, and the application range is wider;
can dismantle through first buckle 6 between annular base 1 and the solid fixed ring 5 and be connected, can dismantle through second buckle 10 between solid fixed ring 5 and the rotatory ring 9 and be connected, detachable design between each subassembly, single part can be changed alone after damaging, has further improved the life of equipment.
While the invention has been described with reference to specific preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (7)
1. The device for detecting the pretightening force of the threaded fastener is characterized by comprising an annular base, an annular strain gauge, a fixed ring and a rotating ring; wherein, the first and the second end of the pipe are connected with each other,
a fixing ring is connected above the annular base, and the annular strain gauge is clamped between the annular base and the fixing ring;
the rotating ring is arranged above the fixed ring and is rotatably connected with the fixed ring; the top of the fixed ring is also uniformly provided with a plurality of balls, and the bottom surface of the rotating ring is in contact with the balls.
2. The preload force detection apparatus for a threaded fastener according to claim 1, wherein: the bottom of solid fixed ring evenly is provided with the first buckle of a plurality of, the first draw-in groove of a plurality of and first buckle one-to-one coupling is evenly seted up to the inner wall of annular base, the annular base with gu fixed ring passes through the lock detachably of first buckle and first draw-in groove connects.
3. The pretension detecting device for a threaded fastener according to claim 1, wherein: the bottom of the rotating ring is evenly provided with a plurality of second buckles, the inner wall of the fixing ring is provided with an annular second clamping groove coupled with the second buckles, and the rotating ring and the fixing ring are rotatably and detachably connected through buckling of the second buckles and the second clamping grooves.
4. The pretension detecting device for a threaded fastener according to claim 1, wherein: the rotary ring is provided with a plurality of slots which are communicated along the radial direction, an attachment strap is inserted into each slot, the attachment strap can move along the radial direction of the rotary ring, and the tail end of the attachment strap is fixedly provided with a tail plate.
5. The pretension detecting device for threaded fasteners according to claim 4, wherein: the slot is positioned at the middle upper part of the rotating ring.
6. The pretension detecting device for a threaded fastener according to claim 1, wherein: the surface of the annular base is fixedly provided with a controller and a display screen, the output end of the annular strain gauge is electrically connected with the input end of the controller, and the output end of the controller is electrically connected with the input end of the display screen.
7. The preload force detection apparatus for a threaded fastener according to claim 1, wherein: the top of the rotating ring is fixedly provided with a rubber pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210972126.XA CN115452233B (en) | 2022-08-15 | 2022-08-15 | Pretightening force detection device of threaded fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210972126.XA CN115452233B (en) | 2022-08-15 | 2022-08-15 | Pretightening force detection device of threaded fastener |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115452233A true CN115452233A (en) | 2022-12-09 |
| CN115452233B CN115452233B (en) | 2023-10-24 |
Family
ID=84299333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210972126.XA Active CN115452233B (en) | 2022-08-15 | 2022-08-15 | Pretightening force detection device of threaded fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115452233B (en) |
Citations (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4330249A1 (en) * | 1993-09-07 | 1994-06-23 | Berwald Werner | Screw fixing with optical function display |
| US6829944B1 (en) * | 2001-10-09 | 2004-12-14 | Stuart M. Gleman | Bolt tension gauging system |
| JP4323568B1 (en) * | 2008-06-20 | 2009-09-02 | 日本原子力発電株式会社 | Method and device for measuring stress of bolted portion |
| KR20100125515A (en) * | 2009-05-21 | 2010-12-01 | 이지영 | Display stand of accessories |
| CN201716140U (en) * | 2010-04-23 | 2011-01-19 | 信阳航天标准件厂 | Tight locking nut loose test device |
| CN201748596U (en) * | 2010-06-29 | 2011-02-16 | 古茂财 | Movable air-conditioner exhaust duct connector mechanism |
| CN202915283U (en) * | 2012-12-04 | 2013-05-01 | 厦门飞德利照明科技有限公司 | Assembly structure for radiator and lamp cap |
| CN103439035A (en) * | 2013-08-27 | 2013-12-11 | 南车株洲电力机车研究所有限公司 | Threaded fastener pre-tightening force measuring method and measuring device thereof |
| CN103592062A (en) * | 2013-10-12 | 2014-02-19 | 南京理工大学 | Axial pre-tightening force sensor |
| CN104568283A (en) * | 2013-10-21 | 2015-04-29 | 浙江万向精工有限公司 | Pre-tightening force detection device for spline shaft bolt of hub |
| CN206056708U (en) * | 2016-08-30 | 2017-03-29 | 温岭甬岭水表有限公司 | A kind of Magnetic drive water meter |
| US9719900B1 (en) * | 2016-04-26 | 2017-08-01 | Northrop Grumman Systems Corporation | Strain-gauged washer for measuring bolt preload |
| CN206430739U (en) * | 2017-02-20 | 2017-08-22 | 中山市爱乐游艺设备有限公司 | A kind of rotary sensing device for recreation facility |
| CN209364574U (en) * | 2018-12-24 | 2019-09-10 | 湘丰茶业集团有限公司 | A kind of Tea Production Tool Cabinet |
| CN110987277A (en) * | 2019-12-30 | 2020-04-10 | 三一重机有限公司 | Detection device |
| CN111307387A (en) * | 2020-03-06 | 2020-06-19 | 西南交通大学 | Bolt transverse load and axial load test clamp and test method thereof |
| CN111345595A (en) * | 2020-04-03 | 2020-06-30 | 合肥恒业家具有限公司 | Office supplies rack |
| CN112924073A (en) * | 2021-01-29 | 2021-06-08 | 同济大学 | Strain type bolt pretightening force gasket sensor based on cantilever structure increase deformation |
| CN113358265A (en) * | 2021-06-22 | 2021-09-07 | 同济大学 | Piezoresistive bolt looseness intelligent monitoring device |
| CN214535055U (en) * | 2020-09-16 | 2021-10-29 | 南京联塑科技实业有限公司 | Novel telescopic joint |
| CN214610901U (en) * | 2021-05-08 | 2021-11-05 | 桐乡市昌业纺织有限公司 | High-tenacity yarn without loose layer |
| CN113624136A (en) * | 2021-08-25 | 2021-11-09 | 中机生产力促进中心 | Part detection device and part detection device calibration method |
| CN214698692U (en) * | 2020-12-01 | 2021-11-12 | 苏州布兰奇机械科技有限公司 | Bolt preloading device with adjustable |
| WO2021232513A1 (en) * | 2020-05-22 | 2021-11-25 | 广东省智能制造研究所 | Pre-tightening force accurate loading system and method for rolling bearing |
| TWI754533B (en) * | 2021-01-29 | 2022-02-01 | 中國氣動工業股份有限公司 | Bolt clamping force sensor for bolt locking work |
| CN114588454A (en) * | 2022-03-11 | 2022-06-07 | 曹彬 | Department of anesthesia uses pharyngeal ventilation device with suction sputum mechanism |
-
2022
- 2022-08-15 CN CN202210972126.XA patent/CN115452233B/en active Active
Patent Citations (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4330249A1 (en) * | 1993-09-07 | 1994-06-23 | Berwald Werner | Screw fixing with optical function display |
| US6829944B1 (en) * | 2001-10-09 | 2004-12-14 | Stuart M. Gleman | Bolt tension gauging system |
| JP4323568B1 (en) * | 2008-06-20 | 2009-09-02 | 日本原子力発電株式会社 | Method and device for measuring stress of bolted portion |
| KR20100125515A (en) * | 2009-05-21 | 2010-12-01 | 이지영 | Display stand of accessories |
| CN201716140U (en) * | 2010-04-23 | 2011-01-19 | 信阳航天标准件厂 | Tight locking nut loose test device |
| CN201748596U (en) * | 2010-06-29 | 2011-02-16 | 古茂财 | Movable air-conditioner exhaust duct connector mechanism |
| CN202915283U (en) * | 2012-12-04 | 2013-05-01 | 厦门飞德利照明科技有限公司 | Assembly structure for radiator and lamp cap |
| CN103439035A (en) * | 2013-08-27 | 2013-12-11 | 南车株洲电力机车研究所有限公司 | Threaded fastener pre-tightening force measuring method and measuring device thereof |
| CN103592062A (en) * | 2013-10-12 | 2014-02-19 | 南京理工大学 | Axial pre-tightening force sensor |
| CN104568283A (en) * | 2013-10-21 | 2015-04-29 | 浙江万向精工有限公司 | Pre-tightening force detection device for spline shaft bolt of hub |
| US9719900B1 (en) * | 2016-04-26 | 2017-08-01 | Northrop Grumman Systems Corporation | Strain-gauged washer for measuring bolt preload |
| CN206056708U (en) * | 2016-08-30 | 2017-03-29 | 温岭甬岭水表有限公司 | A kind of Magnetic drive water meter |
| CN206430739U (en) * | 2017-02-20 | 2017-08-22 | 中山市爱乐游艺设备有限公司 | A kind of rotary sensing device for recreation facility |
| CN209364574U (en) * | 2018-12-24 | 2019-09-10 | 湘丰茶业集团有限公司 | A kind of Tea Production Tool Cabinet |
| CN110987277A (en) * | 2019-12-30 | 2020-04-10 | 三一重机有限公司 | Detection device |
| CN111307387A (en) * | 2020-03-06 | 2020-06-19 | 西南交通大学 | Bolt transverse load and axial load test clamp and test method thereof |
| CN111345595A (en) * | 2020-04-03 | 2020-06-30 | 合肥恒业家具有限公司 | Office supplies rack |
| WO2021232513A1 (en) * | 2020-05-22 | 2021-11-25 | 广东省智能制造研究所 | Pre-tightening force accurate loading system and method for rolling bearing |
| CN214535055U (en) * | 2020-09-16 | 2021-10-29 | 南京联塑科技实业有限公司 | Novel telescopic joint |
| CN214698692U (en) * | 2020-12-01 | 2021-11-12 | 苏州布兰奇机械科技有限公司 | Bolt preloading device with adjustable |
| CN112924073A (en) * | 2021-01-29 | 2021-06-08 | 同济大学 | Strain type bolt pretightening force gasket sensor based on cantilever structure increase deformation |
| TWI754533B (en) * | 2021-01-29 | 2022-02-01 | 中國氣動工業股份有限公司 | Bolt clamping force sensor for bolt locking work |
| CN214610901U (en) * | 2021-05-08 | 2021-11-05 | 桐乡市昌业纺织有限公司 | High-tenacity yarn without loose layer |
| CN113358265A (en) * | 2021-06-22 | 2021-09-07 | 同济大学 | Piezoresistive bolt looseness intelligent monitoring device |
| CN113624136A (en) * | 2021-08-25 | 2021-11-09 | 中机生产力促进中心 | Part detection device and part detection device calibration method |
| CN114588454A (en) * | 2022-03-11 | 2022-06-07 | 曹彬 | Department of anesthesia uses pharyngeal ventilation device with suction sputum mechanism |
Non-Patent Citations (2)
| Title |
|---|
| 吴迪;马建章;: "基于可靠性安全系数法的底板挂耳设计", 科技创新与应用, no. 17 * |
| 邵晨曦;程鹏;平洋;: "基于压机机身的压边力分布均匀性分析", 机械研究与应用, no. 01 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115452233B (en) | 2023-10-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100507491C (en) | Method for measuring single row conical bearing connection in series matched pair inter space | |
| CN115452233A (en) | Pretightening force detection device of threaded fastener | |
| CN212459973U (en) | Expansive force testing device | |
| CN210016381U (en) | Rotor assembly system and assembly chuck thereof | |
| CN112427939A (en) | But big moment of torsion reducing tire nut assembly quality | |
| CN220103909U (en) | Guidance cabin supporting device and guidance cabin detecting device | |
| CN214951929U (en) | Integral type torsion tester | |
| CN212780890U (en) | Pin contact device | |
| CN219977305U (en) | Surface taper measuring device | |
| CN212780663U (en) | Quick detach subassembly, ultrasonic detection mechanism and appearance of detecting a flaw | |
| CN219956753U (en) | Combined clamping and pressing jig and expansion force detection device for battery cell | |
| CN219368696U (en) | Electric connector retention detection device | |
| CN218781923U (en) | High-load temperature detection device for circuit board | |
| CN219121232U (en) | Cover plate signal wheel detection device | |
| CN215373894U (en) | Sundries box checking fixture | |
| CN220508009U (en) | Concentricity measuring instrument | |
| CN215410011U (en) | Laser type belt pulley deflection detector | |
| CN211601822U (en) | Measuring device | |
| CN219833934U (en) | Angle sensor mounting structure convenient to installation and signal acquisition | |
| CN218724710U (en) | Portable vibration detector | |
| CN215064187U (en) | Hydraulic motor output shaft runout testing fixture | |
| CN210293652U (en) | Adjusting mechanism of automobile door frame checking fixture | |
| CN213874116U (en) | Detection tool for detecting cylindricity of inner gear ring | |
| CN212870993U (en) | Trapezoidal thread abrasion detection device | |
| CN210879404U (en) | Positioning device for assembling sensor mainboard |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240208 Address after: B306, China National Machinery Corporation, No. 2 Shouti South Road, Haidian District, Beijing, 100044 Patentee after: China Machinery Productivity Promotion Center Co.,Ltd. Country or region after: China Patentee after: China Machinery Research Institute (Beijing) Co.,Ltd. Address before: B306, China Machinery General Institute, No. 2, Shouti South Road, Haidian District, Beijing 100048 Patentee before: China Machinery Productivity Promotion Center Co.,Ltd. Country or region before: China |