CN108362259B - Strain testing device applied to shafting - Google Patents
Strain testing device applied to shafting Download PDFInfo
- Publication number
- CN108362259B CN108362259B CN201810462350.8A CN201810462350A CN108362259B CN 108362259 B CN108362259 B CN 108362259B CN 201810462350 A CN201810462350 A CN 201810462350A CN 108362259 B CN108362259 B CN 108362259B
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- CN
- China
- Prior art keywords
- ring body
- strain
- semicircular ring
- semicircular body
- adjusting bolt
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- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 238000007906 compression Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 7
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Abstract
The invention discloses a strain testing device applied to a shafting, belongs to the technical field of shafting stress measurement, and aims to solve the problems that the strain gage position of the existing product is inaccurate to place, errors are easy to occur, and the strain gage is easy to fall off due to loose clamping during testing. The upper semicircular ring body and the lower semicircular ring body are relatively arranged on the test shaft, and one end of the upper semicircular ring body is connected with one end of the lower semicircular ring body through a first adjusting bolt; the other end of the upper semicircular ring body is connected with a limiting device, the limiting device is connected with the other end of the lower semicircular ring body through a second adjusting bolt, sliding rails are arranged on the inner walls of the upper semicircular ring body and the lower semicircular ring body in parallel, a plurality of sliding blocks are arranged on the sliding rails, and strain gauges are arranged on each sliding block. The strain testing device applied to the shafting can quickly and accurately determine the sticking position of the strain gauge, and is firm in clamping.
Description
Technical Field
The invention relates to a strain testing device applied to a shafting, and belongs to the technical field of shafting stress measurement.
Background
The main function of the shaft is to support the rotating parts and transmit torque, should have good machining and assembly manufacturability, and should avoid stress concentrations as much as possible. In actual engineering, due to the complicated working conditions (under the action of torque, bending moment, axial force and the like, and the high-speed heavy load), the structure, the design and the like, the rotary mechanical equipment often has a fracture accident of broken shafting strength, so that huge economic loss is caused. Therefore, the strain and stress conditions of the shafting are accurately measured, strength check is carried out in the design and production process, the reliability and stability of actual operation are ensured, the method has great engineering practical significance and guiding effect, the measuring position of the existing product is easy to generate errors during measurement, and the strain gauge is easy to fall off.
Disclosure of Invention
The invention aims to provide a strain testing device applied to a shafting, so as to solve the problems.
The strain testing device applied to the shafting comprises an upper semicircular body, a lower semicircular body, a first adjusting bolt, a limiting device, a second adjusting bolt, a sliding rail, a sliding block and a strain gauge;
the upper semicircular ring body and the lower semicircular ring body are relatively arranged on the test shaft, and one end of the upper semicircular ring body is connected with one end of the lower semicircular ring body through a first adjusting bolt; the other end of the upper semicircular ring body is connected with a limiting device, the limiting device is connected with the other end of the lower semicircular ring body through a second adjusting bolt, sliding rails are arranged on the inner walls of the upper semicircular ring body and the lower semicircular ring body in parallel, a plurality of sliding blocks are arranged on the sliding rails, and strain gauges are arranged on each sliding block;
the limiting device comprises a main body, a rotating shaft, a limiting block and a compression spring;
the main part is gone up and is opened there is circular recess, and circular recess is equipped with the opening, and the opening part upper end is equipped with the bellying, all opens on the both sides lateral wall of bellying below has the recess, is equipped with the pivot in the recess, and the one end of stopper articulates in the pivot, and the other end is located the opening, and compression spring's one end is connected with the inner wall of recess, and the other end is connected with one side lateral wall of stopper.
Preferably: an adjusting spring is sleeved on the first adjusting bolt, and two ends of the adjusting spring are respectively abutted against the upper semicircular ring body and the lower semicircular ring body.
Preferably: the strain gauge is connected with the strain gauge.
Compared with the existing products, the invention has the following effects: the strain gauge sticking position can be rapidly and accurately determined, the operation is simple and rapid, errors caused by manual operation are avoided, and the accurate positioning of the testing position is ensured. And due to the adjusting spring, a certain error range exists between the positioning work and the diameter of the shaft, and the applicability is stronger. In addition, the device of design simple structure, with low costs, processing is convenient. The limiting device can effectively prevent the device from falling off.
Drawings
FIG. 1 is a schematic diagram of a strain testing device for a shaft system according to the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a schematic view of a spacing device;
FIG. 4 is an enlarged view at A of FIG. 1;
fig. 5 is a schematic diagram of the structure at the time of testing.
In the figure: the device comprises a 1-upper semicircular body, a 2-lower semicircular body, a 3-first adjusting bolt, a 4-limiting device, a 5-second adjusting bolt, a 6-sliding rail, a 7-sliding block, an 8-strain gauge, a 9-circular groove, a 10-protruding part, a 11-groove, a 12-rotating shaft, a 13-limiting block, a 14-compression spring, a 15-test shaft and a 16-adjusting spring.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 5, the strain testing device applied to a shafting in the invention comprises an upper semicircular body 1, a lower semicircular body 2, a first adjusting bolt 3, a limiting device 4, a second adjusting bolt 5, a sliding rail 6, a sliding block 7 and a strain gauge 8;
the upper semicircular body 1 and the lower semicircular body 2 are oppositely arranged on a test shaft 15, and one end of the upper semicircular body 1 is connected with one end of the lower semicircular body 2 through a first adjusting bolt 3; the other end of the upper semicircular body 1 is connected with a limiting device 4, the limiting device 4 is connected with the other end of the lower semicircular body 2 through a second adjusting bolt 5, sliding rails 6 are arranged on the inner walls of the upper semicircular body 1 and the lower semicircular body 2 in parallel, a plurality of sliding blocks 7 are arranged on the sliding rails 6, and strain gauges 8 are arranged on each sliding block 7;
the limiting device 4 comprises a main body, a rotating shaft 12, a limiting block 13 and a compression spring 14;
the main part is gone up and is opened there is circular recess 9, and circular recess 9 is equipped with the opening, and the opening part upper end is equipped with bellying 10, all opens on the both sides lateral wall of bellying 10 below has recess 11, is equipped with pivot 12 in the recess 11, and the one end of stopper 13 articulates on pivot 12, and the other end is located the opening, and compression spring 14's one end is connected with the inner wall of recess 11, and the other end is connected with one side lateral wall of stopper 13.
Further: an adjusting spring 16 is sleeved on the first adjusting bolt 3, and two ends of the adjusting spring 16 are respectively abutted against the upper semicircular ring body 1 and the lower semicircular ring body 2.
Further: the strain gauge 8 is connected with a strain gauge which is a MYJ series strain gauge manufactured by Shanghai Automation instruments Co., ltd.
The designed strain experiment testing device mainly comprises a shaft, a positioning tool and a wireless signal transmitter; the device comprises a receiver, a strain gauge, an acquisition instrument, a computer and the like. Wherein the transmitter is attached at the shaft surface or at the shaft end. Because the shafting runs at a high speed under normal working conditions, the strain experiment testing device adopts a wireless testing mode. The strain gauge on the positioning tool is transmitted to the receiver in a wireless signal form by the transmitter, the receiver transmits the signal to the strain gauge, the strain gauge amplifies the signal and inputs the signal to the acquisition instrument, wherein the acquisition instrument is at least 8 channels, and finally the dynamic strain signal is transmitted to the computer for analysis and processing.
In the use, the end part of the joint of the upper semicircular ring body and the lower semicircular ring body is horizontal, so that the accuracy of the patch position of the strain gauge is ensured. The upper semicircular ring body and the lower semicircular ring body are provided with sliding rails, and sliding blocks on the sliding rails are used for determining the sticking positions of the strain gauges.
The strain test device is designed to adopt a wireless test mode, so that the sticking position of the strain gauge can be rapidly and accurately determined, and the accurate positioning of the test position is ensured. And due to the adjusting spring, a certain error range exists between the positioning work and the diameter of the shaft, and the applicability is stronger. In addition, the designed device has simple structure, low cost and convenient processing
The present embodiment is only exemplary of the present patent, and does not limit the scope of protection thereof, and those skilled in the art may also change the part thereof, so long as the spirit of the present patent is not exceeded, and the present patent is within the scope of protection thereof.
Claims (3)
1. Be applied to strain testing device of shafting, its characterized in that: the device comprises an upper semicircular body (1), a lower semicircular body (2), a first adjusting bolt (3), a limiting device (4), a second adjusting bolt (5), a sliding rail (6), a sliding block (7) and a strain gauge (8);
the upper semicircular body (1) and the lower semicircular body (2) are oppositely arranged on the test shaft (15), and one end of the upper semicircular body (1) is connected with one end of the lower semicircular body (2) through a first adjusting bolt (3); the other end of the upper semicircular body (1) is connected with a limiting device (4), the limiting device (4) is connected with the other end of the lower semicircular body (2) through a second adjusting bolt (5), sliding rails (6) are arranged on the inner walls of the upper semicircular body (1) and the lower semicircular body (2) in parallel, a plurality of sliding blocks (7) are arranged on the sliding rails (6), and strain gauges (8) are arranged on each sliding block (7);
the limiting device (4) comprises a main body, a rotating shaft (12), a limiting block (13) and a compression spring (14);
the novel anti-theft device is characterized in that the main body is provided with a circular groove (9), the circular groove (9) is provided with an opening, the upper end of the opening is provided with a protruding portion (10), both side walls below the protruding portion (10) are provided with grooves (11), a rotating shaft (12) is arranged in the grooves (11), one end of a limiting block (13) is hinged to the rotating shaft (12), the other end of the limiting block is located in the opening, one end of a compression spring (14) is connected with the inner wall of the grooves (11), and the other end of the compression spring is connected with one side wall of the limiting block (13).
2. The strain testing device for a shaft system according to claim 1, wherein: an adjusting spring (16) is sleeved on the first adjusting bolt (3), and two ends of the adjusting spring (16) are respectively abutted against the upper semicircular body (1) and the lower semicircular body (2).
3. The strain testing device for a shaft system according to claim 1, wherein: the strain gauge (8) is connected with the strain gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810462350.8A CN108362259B (en) | 2018-05-15 | 2018-05-15 | Strain testing device applied to shafting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810462350.8A CN108362259B (en) | 2018-05-15 | 2018-05-15 | Strain testing device applied to shafting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108362259A CN108362259A (en) | 2018-08-03 |
| CN108362259B true CN108362259B (en) | 2024-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810462350.8A Active CN108362259B (en) | 2018-05-15 | 2018-05-15 | Strain testing device applied to shafting |
Country Status (1)
| Country | Link |
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| CN (1) | CN108362259B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220489A (en) * | 2019-05-08 | 2019-09-10 | 南京仕达得尔智能科技有限公司 | Piece is observed at real-time intelligent expansion joint |
| CN113899482A (en) * | 2021-09-30 | 2022-01-07 | 国网江苏省电力有限公司检修分公司 | Isolating switch main shaft torque measuring sensor and jamming defect detection method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD262281A1 (en) * | 1987-07-07 | 1988-11-23 | Schiffbau Veb K | DEVICE FOR MEASURING THE PROPELLER CHIP |
| JPH02109228U (en) * | 1989-02-17 | 1990-08-31 | ||
| CN101858802A (en) * | 2010-05-25 | 2010-10-13 | 上海应用技术学院 | Snap ring-type force sensor |
| CN106840482A (en) * | 2017-03-02 | 2017-06-13 | 招商局重庆交通科研设计院有限公司 | A kind of tension of prestressed tendon stress and stress under anchorage test device and its method of testing |
| CN107036745A (en) * | 2017-04-24 | 2017-08-11 | 西北工业大学 | Latch hook staring torque measurement apparatus and method for uplock reliability test |
| CN107389108A (en) * | 2017-07-25 | 2017-11-24 | 合肥科斯维数据科技有限公司 | A kind of laboratory data informationization harvester |
| CN107894368A (en) * | 2017-11-03 | 2018-04-10 | 中国石油大学(华东) | A kind of pipe safety evaluating apparatus and method based on strain detecting |
| CN107976267A (en) * | 2017-12-18 | 2018-05-01 | 中国石油大学(北京) | A kind of outer force measuring device of marine riser and measuring method |
| CN208223461U (en) * | 2018-05-15 | 2018-12-11 | 哈尔滨电气股份有限公司 | A kind of strain detection testing device applied to shafting |
-
2018
- 2018-05-15 CN CN201810462350.8A patent/CN108362259B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD262281A1 (en) * | 1987-07-07 | 1988-11-23 | Schiffbau Veb K | DEVICE FOR MEASURING THE PROPELLER CHIP |
| JPH02109228U (en) * | 1989-02-17 | 1990-08-31 | ||
| CN101858802A (en) * | 2010-05-25 | 2010-10-13 | 上海应用技术学院 | Snap ring-type force sensor |
| CN106840482A (en) * | 2017-03-02 | 2017-06-13 | 招商局重庆交通科研设计院有限公司 | A kind of tension of prestressed tendon stress and stress under anchorage test device and its method of testing |
| CN107036745A (en) * | 2017-04-24 | 2017-08-11 | 西北工业大学 | Latch hook staring torque measurement apparatus and method for uplock reliability test |
| CN107389108A (en) * | 2017-07-25 | 2017-11-24 | 合肥科斯维数据科技有限公司 | A kind of laboratory data informationization harvester |
| CN107894368A (en) * | 2017-11-03 | 2018-04-10 | 中国石油大学(华东) | A kind of pipe safety evaluating apparatus and method based on strain detecting |
| CN107976267A (en) * | 2017-12-18 | 2018-05-01 | 中国石油大学(北京) | A kind of outer force measuring device of marine riser and measuring method |
| CN208223461U (en) * | 2018-05-15 | 2018-12-11 | 哈尔滨电气股份有限公司 | A kind of strain detection testing device applied to shafting |
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| CN108362259A (en) | 2018-08-03 |
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