CN202041349U - Combined testing instrument for rotation of rigid body - Google Patents
Combined testing instrument for rotation of rigid body Download PDFInfo
- Publication number
- CN202041349U CN202041349U CN2010206849584U CN201020684958U CN202041349U CN 202041349 U CN202041349 U CN 202041349U CN 2010206849584 U CN2010206849584 U CN 2010206849584U CN 201020684958 U CN201020684958 U CN 201020684958U CN 202041349 U CN202041349 U CN 202041349U
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- Prior art keywords
- pulley
- switch sensor
- rotation
- objective table
- rigid body
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Abstract
The utility model relates to a combined testing instrument for the rotation of a rigid body. The combined testing instrument comprises a multifunctional timing and counting millisecond meter, a rotating device, a roller assembly and a hall switch sensor assembly, wherein the rotating device comprises an object stage, a winding cone pulley and a base; the roller assembly comprises a support, a roller as well as a fastener, a hung line and a weight that are connected with the roller; and the hall switch sensor assembly comprises a hall switch sensor and a fixing frame which is used for fixing the hall switch sensor. Compared with the prior art, the combined testing instrument has the advantages that the structure is compact, the complex steps for assembling the instrument can be omitted, the operation is convenient and simple, etc.
Description
Technical field
This use is novel to relate to a kind of experiment instrument, especially relates to a kind of Rigid Body in Rotation With comprehensive test apparatus.
Background technology
Moment of inertia is a physical quantity of describing inertia size in the Rigid Body in Rotation With, and it is relevant with the mass distribution and the rotating shaft position of rigid body.The correct moment of inertia of measuring object has very important meaning for understanding object rotating rule, Machine Design manufacturing.Yet in actual engineering, the geometric configuration of most of objects is not regular, is difficult to directly calculate its moment of inertia with theoretical formula, can only realize by means of the method for experiment.At present, come the method for Measuring Moment of Inertia Using also to have much with the method for experiment, as three-way arrangement, two-wire arrangement and method of rotation or the like.
The shortcoming of three string pendulums and bifilar pendulum Measuring Moment of Inertia Using is that the length of cycloid is difficult to be adjusted to level, moreover also is easy to break in doing the process of experiment.Simultaneously, when the cycle is rocked in calculating, use stopwatch to carry out timing, can bring artificial timing error like this, thereby reduce the precision of measuring.As shown in Figure 1, existing solid moment of inertia measurement mechanism is made up of bearing table A, shading rod B, coiling cone pulley C, photogate D, pulley E, counterweight F, determinand G, but this device has following shortcoming: pulley and direction adjusting part thereof separate with wheelwork, must have can fixed block and the object of direction assembly, and inconvenience operates; Photogate and the shading rod of stretching downwards are the experimenter easily and are broken in doing the process of experiment; The barycenter that be difficult to guarantee tested rigid body is the rotating shaft core by objective table just in time.
The utility model content
The novel purpose of this use is exactly the loaded down with trivial details step that provides a kind of compact conformation for the defective that overcomes above-mentioned prior art existence, can omit the assembling instrument, and easy to operate simple Rigid Body in Rotation With comprehensive test apparatus.
The novel purpose of this use can be achieved through the following technical solutions: a kind of Rigid Body in Rotation With comprehensive test apparatus is characterized in that this comprehensive test apparatus comprises multi-functional timing counting millisecond instrument, wheelwork, pulley assembly, honeywell switch sensor assembly; Described wheelwork comprises objective table, coiling cone pulley, base, described objective table is disc, and on the loading surface of objective table, be provided with a plurality of clamping ringss that conform to the annulus that will verify or cylinder size or the groove of cylinder, described coiling cone pulley is set on the support shaft, the radial symmetry of this support shaft is provided with a pair of magnet steel, and described base is provided with air level and three horizontal adjustment knob; Described pulley assembly comprise support, pulley, with pulley coupled fasteners, hanging wire, counterweight, described support and base flexibly connect by bolt, described securing member is arranged on the support, can slide up and down and left-right rotation along support, one end of described hanging wire is on the coiling cone pulley, and the other end is set on the pulley and with counterweight and is connected; Described honeywell switch sensor assembly comprises honeywell switch sensor, the fixing fixed mount of honeywell switch sensor, and described fixed mount is provided with magnet steel.Described objective table is an aluminium disks shape objective table.
Described groove is disposed on a diametrical position of loading surface.
Described groove is provided with 3～9.
Compared with prior art, this use is novel has the following advantages:
1, can survey the moment of inertia of arbitrary shape rigid body, convenient and simple for operation.
2, when the moment of inertia of checking annulus (post), for accurate in locating iron hoop (post), inside surface at objective table has dug a dark groove of 1mm that is consistent with iron hoop (post) size, when doing replication experiment like this, it is too fast to prevent that objective table from rotating, iron hoop (post) has slip with respect to stage surface, and can make the barycenter of experiment thing can be accurately axle center by rotating shaft.
3, pulley and direction adjusting part and solid moment of inertia device are connected as a single entity, and can stretch and can receive, and do not need separately pulley and direction adjusting part to be fixed on other object, can omit the loaded down with trivial details step of assembling instrument like this.
4, compact conformation, simple, collection machinery is one with electronic surveying.
Description of drawings
Fig. 1 is existing solid moment of inertia measurement mechanism structural representation;
Fig. 2 is a structural representation of the present invention;
Fig. 3 is multi-functional millisecond instrument panel synoptic diagram.
Embodiment
Be elaborated to this use is novel below in conjunction with the drawings and specific embodiments.
Embodiment
As Fig. 2, shown in Figure 3, a kind of Rigid Body in Rotation With comprehensive test apparatus, this comprehensive test apparatus comprise multi-functional timing counting millisecond instrument, wheelwork, pulley assembly, honeywell switch sensor assembly.Wheelwork comprises objective table 4, coiling cone pulley 7, base 6.Objective table 4 is an aluminium disks shape objective table, and this objective table 4 is disc, and is provided with 7 clamping ringss that conform to the annulus that will verify or cylinder size or the groove of cylinder on the loading surface of objective table 4.Groove is disposed on a diametrical position of loading surface.Coiling cone pulley 7 is set on the support shaft, and the radial symmetry of this support shaft is provided with a pair of magnet steel 8.Base 6 is provided with air level and three horizontal adjustment knob 11.Pulley assembly comprise support, pulley 1, with pulley 1 coupled fasteners 2, hanging wire 3, counterweight 5.Support and base 6 flexibly connect by bolt.Securing member is arranged on the support, can slide up and down and left-right rotation along support.One end of hanging wire is on the coiling cone pulley, and the other end is set on the pulley and with counterweight and is connected.The honeywell switch sensor assembly comprises honeywell switch sensor 9, the fixing fixed mount 10 of honeywell switch sensor.Fixed mount 10 is provided with magnet steel.
The Rigid Body in Rotation With comprehensive test apparatus is because counterweight 5 deadweights, the rotation that drives coiling cone pulley 7 by hanging wire 3 makes objective table 4 rotate together, the axle that links to each other with coiling tower human relations 7 has been gone up symmetrical dress 2 magnet steel 8, when magnet steel 8 passes through honeywell switch sensor 9 for the first time, honeywell switch sensor 9 meeting output low levels, produce a pulse, at this moment multi-functional timing counting millisecond instrument begins counting and timing.After this, magnet steel is every, and time counting will increase once through a honeywell switch sensor 9 (promptly turning over 180 °), and the time adds up on last basis once.Because the effect of counterweight 5 moment of face, the angular acceleration that this moment, objective table 4 rotated be on the occasion of.After hanging wire 3 and coiling cone pulley 7 broke away from, objective table 4 was owing to the effect of moment of friction, and the angular acceleration of this moment is a negative value.The number of times of multi-functional timing counting millisecond instrument collection and time accessed get a suitable interval, can calculate this two acceleration, thereby just can obtain objective table 4 moment of inertia.Counterweight 5 is because during the deadweight free-falling, drive coiling cone pulleys 7 by hanging wire 3 and rotate, fixed aluminium matter disc objective table 4 by hexagon socket head cap screw above the coiling cone pulley 7, below symmetry installation two magnet steel 8, when coiling cone pulley 7 rotated, magnet steel 8 and objective table 4 kept coaxial rotation together.In order to improve the precision of measurement, must regulate pulley assembly, thereby make the hanging wire 3 maintenance levels between pulley 1 and the coiling cone pulley 7; Regulate three horizontal adjustment knob 11, make objective table 4 levels.Honeywell switch sensor 9 has three wires, and wherein red line connects a millisecond instrument+5V binding post 17, and black line connects GND binding post 18, and yellow line connects INPUT binding post 19.Magnet steel 8 during by honeywell switch sensor 9, can be exported a low level in coiling cone pulley 7 rotating process, incoming level pilot lamp 20 can be once glittering simultaneously.Number of times display 13 shows at 00 o'clock begins counting, and time display 14 shows and the number of times time corresponding that the time is the cumulative time that picks up counting.Before beginning experiment, we should preset multi-functional timing counting millisecond instrument number of times toggle switch 12, and a suitable number of times is set.When counting reached the number of times that presets, counting, timing stopped.When we will write down each pairing time, can consult key 15,21 by number of pass times, consult the time of corresponding number of times backward or forward.
Claims (4)
1. a Rigid Body in Rotation With comprehensive test apparatus is characterized in that, this comprehensive test apparatus comprises multi-functional timing counting millisecond instrument, wheelwork, pulley assembly, honeywell switch sensor assembly;
Described wheelwork comprises objective table, coiling cone pulley, base, described objective table is disc, and on the loading surface of objective table, be provided with a plurality of clamping ringss that conform to the annulus that will verify or cylinder size or the groove of cylinder, described coiling cone pulley is set on the support shaft, the radial symmetry of this support shaft is provided with a pair of magnet steel, and described base is provided with air level and three horizontal adjustment knob;
Described pulley assembly comprise support, pulley, with pulley coupled fasteners, hanging wire, counterweight, described support and base flexibly connect by bolt, described securing member is arranged on the support, can slide up and down and left-right rotation along support, one end of described hanging wire is on the coiling cone pulley, and the other end is set on the pulley and with counterweight and is connected;
Described honeywell switch sensor assembly comprises honeywell switch sensor, the fixing fixed mount of honeywell switch sensor, and described fixed mount is provided with magnet steel.
2. a kind of Rigid Body in Rotation With comprehensive test apparatus according to claim 1 is characterized in that, described objective table is an aluminium disks shape objective table.
3. a kind of Rigid Body in Rotation With comprehensive test apparatus according to claim 1 is characterized in that, described groove is disposed on a diametrical position of loading surface.
4. according to claim 1 or 3 described a kind of Rigid Body in Rotation With comprehensive test apparatus, it is characterized in that described groove is provided with 3～9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206849584U CN202041349U (en) | 2010-12-23 | 2010-12-23 | Combined testing instrument for rotation of rigid body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206849584U CN202041349U (en) | 2010-12-23 | 2010-12-23 | Combined testing instrument for rotation of rigid body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202041349U true CN202041349U (en) | 2011-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206849584U Expired - Fee Related CN202041349U (en) | 2010-12-23 | 2010-12-23 | Combined testing instrument for rotation of rigid body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202041349U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323177A (en) * | 2013-06-01 | 2013-09-25 | 范雲鹤 | Novel rigid body rotational inertia tester |
| CN103604562A (en) * | 2013-11-05 | 2014-02-26 | 中国科学院西安光学精密机械研究所 | Device for testing rotational inertia of two-dimensional rotation mechanism and complex parts of two-dimensional rotation mechanism and method thereof |
| CN106872103A (en) * | 2017-03-23 | 2017-06-20 | 重庆科技学院 | Processional moment measuring device and assay method |
| CN109459301A (en) * | 2018-12-28 | 2019-03-12 | 同济大学 | A kind of mechanics synthetic experiment bench load deflection mechanism |
-
2010
- 2010-12-23 CN CN2010206849584U patent/CN202041349U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323177A (en) * | 2013-06-01 | 2013-09-25 | 范雲鹤 | Novel rigid body rotational inertia tester |
| CN103604562A (en) * | 2013-11-05 | 2014-02-26 | 中国科学院西安光学精密机械研究所 | Device for testing rotational inertia of two-dimensional rotation mechanism and complex parts of two-dimensional rotation mechanism and method thereof |
| CN103604562B (en) * | 2013-11-05 | 2016-04-27 | 中国科学院西安光学精密机械研究所 | The proving installation of two-dimensional rotation mechanism and complex parts moment of inertia thereof and method |
| CN106872103A (en) * | 2017-03-23 | 2017-06-20 | 重庆科技学院 | Processional moment measuring device and assay method |
| CN109459301A (en) * | 2018-12-28 | 2019-03-12 | 同济大学 | A kind of mechanics synthetic experiment bench load deflection mechanism |
| CN109459301B (en) * | 2018-12-28 | 2024-02-27 | 同济大学 | Loading displacement mechanism for mechanical comprehensive experiment table |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20131223 |