CN200979484Y - A dynamic stress experimental unit with adjustable static load position - Google Patents
A dynamic stress experimental unit with adjustable static load position Download PDFInfo
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- CN200979484Y CN200979484Y CN 200620126416 CN200620126416U CN200979484Y CN 200979484 Y CN200979484 Y CN 200979484Y CN 200620126416 CN200620126416 CN 200620126416 CN 200620126416 U CN200620126416 U CN 200620126416U CN 200979484 Y CN200979484 Y CN 200979484Y
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Abstract
A dynamic stress experimental device whose steady load acting position can be adjusted uses a unit under test as a girder member. The unit under test is supported on a holdfast. A motor base plate is mounted on the unit under test by an end plate, which is characterized in that a motor output shaft is perpendicular to the central axis of the unit under test. The motor output shaft is fixedly mounted with an eccentric mass. The plane of the eccentric mass and the central axis of the unit under test are in a same vertical plane, which makes the central axis of the unit under test as center. On the other side of the end plate which is corresponded with the motor, a T-shape groove which is perpendicular to the central axis of the unit under test is provided. A counter weight mass whose position can be adjusted is provided in the T-shape groove. The counter weight mass is provided at the coincidence position of the steady load action line and the eccentric force action line in the T-shape groove. The utility model can effectively improve experimental accuracy.
Description
Technical field:
The utility model relates to the dynamic experiment device, the dynamic experiment device of the eccentric motor adjustable positions of more specifically saying so.
Background technology:
In engineering structures such as machinery, vehicle, building and bridge, exist a large amount of vibrations and shock problem, member in these structures moving (attitude) stress state under dynamic load effect is paid close attention to by people always, also is one of important content of science and engineering class Major " mechanics of materials " course simultaneously.In order to understand under dynamic load effect, the dynamic stress characteristic of member has been offered the dynamic stress experiment usually.Corresponding experimental provision generally adopts the form of free beam or semi-girder, dynamic loading is realized by eccentric motor (setting-up eccentricity quality on the micro-machine output shaft) piece, and changes size and the frequency that rotating speed of motor changes dynamic loading by the input voltage of pressure regulator adjustment motor.On conventional device, motor generally adopts the mounting means of output shaft and beam axis normal.Because the eccentric force that eccentric massblock produced and the weight (promptly being carried in the static load on the beam) of whole motor are in same plane, when static load acted on vertical plane of symmetry of beam, eccentric force must depart from this plane.Like this, when motor rotated, this eccentric force not only can make beam produce the vibration of above-below direction, can produce torsional oscillation simultaneously, thereby influence experimental measurements.
The utility model content:
The utility model is for avoiding above-mentioned existing in prior technology weak point, providing a kind of static load active position adjustable dynamic stress experimental provision.
The technical scheme that the utility model technical solution problem is adopted is:
The utility model adopts the version of free beam or semi-girder, is beam with the test specimen, and the both-end of test specimen supports or the single-ended cantilever-type that is is supported on the support; Motor base plate is installed on the test specimen by base plate.
Design feature of the present utility model is that the output shaft of motor is vertical with the axis of test specimen; By connecting rod fixed installation eccentric massblock, the Plane of rotation of eccentric massblock and the axis of test specimen are in the same perpendicular on the output shaft of motor; Axis with test specimen is the center, on the opposite side of the base plate relative with motor position, the T-slot vertical with the axis of test specimen is set, the weight mass piece of adjustable positions is set in T-slot, and the weight mass piece is in and makes in the T-slot on static load active line and the position that the eccentric force active line overlaps.
Weight mass piece in the utility model can slide in T-slot, thereby the active line of adjusting gear general assembly (TW) on the base plate (promptly being carried in the static load on the beam) is overlapped with eccentric line of action of force.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
The adjustable setting of weight mass piece in T-slot in the utility model, can freely adjust the active position of static load, thereby guarantee static load and eccentric force conllinear, and the axis of symmetry by beam, thereby beam only produces above-below direction in the experiment measuring process vibration guaranteed.Can improve the precision of experiment measuring like this.
Description of drawings:
Fig. 1 is the utility model master TV structure synoptic diagram.
Fig. 2 is the utility model side-looking structural representation.
Number in the figure: 1 weight mass piece, 2 output shafts, 3 connecting rods, 4 eccentric massblocks, 5 motors, 6 test specimens, 7 motor base plates, 8 base plates, 9 press strips, 10 screws, 11 are T-slot.
Below pass through embodiment, and in conjunction with the accompanying drawings the utility model be further described:
Embodiment:
Referring to Fig. 1, Fig. 2, adopt the version of free beam or semi-girder, be beam with test specimen 6, the both-end of test specimen 6 supports or the single-ended cantilever-type that is is supported on the support; Motor base plate 7 is installed on the test specimen 6 by base plate 8.In concrete the enforcement, for simple beam structure, motor should be fixedly mounted on the middle part as the test specimen 6 of beam, and for the version of semi-girder, motor should be fixedly mounted on the outer end that suspends as the test specimen 6 of semi-girder.
Fig. 1, shown in Figure 2, the output shaft 2 of motor 5 is vertical with the axis of test specimen 6; By connecting rod 3 fixed installation eccentric massblocks 4, the axis of the Plane of rotation of eccentric massblock 4 and test specimen 6 is in the same perpendicular on the output shaft 2 of motor 5; Axis with test specimen 6 is the center, on the opposite side of the base plate relative 8 with motor position, the T-slot 11 vertical with the axis of test specimen 6 is set, the weight mass piece 1 of adjustable positions is set in T-slot 11, and weight mass piece 1 is in and makes in the T-slot 11 on static load active line and the position that the eccentric force active line overlaps.
Adjust the position of weight mass piece 1 in T-slot 11, so that static load and eccentric force conllinear, and the axis by test specimen 6, thereby guarantee beam only produces above-below direction in the experiment measuring process vibration, effectively improve the precision of experiment measuring.
The position adjustment of weight mass piece 1 is tightened screw 10 after determining, makes press strip 9 compress weight mass piece 1, is fixed.
Claims (1)
1, the adjustable dynamic stress experimental provision of static load active position, the version of employing free beam or semi-girder is beam with test specimen (6), the both-end of test specimen (6) supports or the single-ended cantilever-type that is is supported on the support; Motor base plate (7) is installed on the test specimen (6) by base plate (8); The output shaft (2) that it is characterized in that motor (5) is vertical with the axis of test specimen (6); Go up by connecting rod (3) fixed installation eccentric massblock (4) at the output shaft (2) of motor (5), the axis of the Plane of rotation of eccentric massblock (4) and test specimen (6) is in the same perpendicular; Axis with test specimen (6) is the center, on the opposite side of the base plate relative (8) with motor position, the T-slot (11) vertical with the axis of test specimen (6) is set, the weight mass piece (1) of adjustable positions is set in described T-slot (11), and weight mass piece (1) is in and makes in the T-slot (11) on static load active line and the position that the eccentric force active line overlaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620126416 CN200979484Y (en) | 2006-10-14 | 2006-10-14 | A dynamic stress experimental unit with adjustable static load position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620126416 CN200979484Y (en) | 2006-10-14 | 2006-10-14 | A dynamic stress experimental unit with adjustable static load position |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200979484Y true CN200979484Y (en) | 2007-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620126416 Expired - Fee Related CN200979484Y (en) | 2006-10-14 | 2006-10-14 | A dynamic stress experimental unit with adjustable static load position |
Country Status (1)
| Country | Link |
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| CN (1) | CN200979484Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156035A (en) * | 2011-03-24 | 2011-08-17 | 西安交通大学 | Turbine blade vibration characteristic testing and measuring device with shroud damping block and blade root wedged damping block |
| CN103063231A (en) * | 2013-01-08 | 2013-04-24 | 中国船舶重工集团公司第七0四研究所 | High frequency vibration resistant beam used for micro torque calibrating device |
| CN105823627A (en) * | 2015-11-05 | 2016-08-03 | 浙江华电器材检测研究所 | Scaffold swinging fatigue tester and testing method thereof |
-
2006
- 2006-10-14 CN CN 200620126416 patent/CN200979484Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156035A (en) * | 2011-03-24 | 2011-08-17 | 西安交通大学 | Turbine blade vibration characteristic testing and measuring device with shroud damping block and blade root wedged damping block |
| CN102156035B (en) * | 2011-03-24 | 2012-09-05 | 西安交通大学 | Turbine blade vibration characteristic testing and measuring device with shroud damping block and blade root wedged damping block |
| CN103063231A (en) * | 2013-01-08 | 2013-04-24 | 中国船舶重工集团公司第七0四研究所 | High frequency vibration resistant beam used for micro torque calibrating device |
| CN103063231B (en) * | 2013-01-08 | 2015-08-19 | 中国船舶重工集团公司第七0四研究所 | For the anti-dither beam of small torque calibration device |
| CN105823627A (en) * | 2015-11-05 | 2016-08-03 | 浙江华电器材检测研究所 | Scaffold swinging fatigue tester and testing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: YTO (Luoyang) Kintra Equipment Science & Technology Co., Ltd. Assignor: Hefei University of Technology Contract fulfillment period: 2007.12.20 to 2013.12.19 Contract record no.: 2008410000071 Denomination of utility model: A dynamic stress experimental unit with adjustable static load position Granted publication date: 20071121 License type: Exclusive license Record date: 20081124 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.12.20 TO 2013.12.19; CHANGE OF CONTRACT Name of requester: YTO (LUOYANG) KAICHUANG TECHNOLOGY AND EQUIPMENT C Effective date: 20081124 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071121 Termination date: 20101014 |