CN202770589U - Rotational inertia measuring instrument of three-line pendulum - Google Patents
Rotational inertia measuring instrument of three-line pendulum Download PDFInfo
- Publication number
- CN202770589U CN202770589U CN 201220346535 CN201220346535U CN202770589U CN 202770589 U CN202770589 U CN 202770589U CN 201220346535 CN201220346535 CN 201220346535 CN 201220346535 U CN201220346535 U CN 201220346535U CN 202770589 U CN202770589 U CN 202770589U
- Authority
- CN
- China
- Prior art keywords
- lower disc
- countersunk head
- slotted hole
- disc
- head slotted
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model relates to a rotational inertia measuring instrument of a three-line pendulum, which comprises a bracket, an upper disc which is mounted at the upper end of the bracket and a lower disc which is connected with the upper disc through three hanging lines, wherein four long counter bores are arranged on the upper surface of the lower disc, and the length directions of the long counter bores are accordant with the radial direction of the lower disc; the long counter bores are uniformly distributed along the circumferential direction of the upper circular surface of the lower disc; the long counter bores are each marked, at both sides of the length directions thereof, with scales taking a circle center as the zero point; the long counter bores are provided with inclined ports on the upper circular surface of the lower disc; a sliding block is arranged on each of the inclined ports of the long counter bores; a through hole on the sliding block is provided with a bolt which penetrates the bolt and the long counter bores and stretches to the lower surface of the lower disc; and a detected element is connected at the stretching end of the bolt.
Description
Technical field
The utility model belongs to the rotation inerttia technical field, particularly relates to a kind of three-line pendulum rotational inertia measuring instrument.
Background technology
The tolerance of inertia size when moment of inertia is Rigid Body in Rotation With is a physical quantity that shows the rigid body characteristic, and solid moment of inertia is except outside the Pass the quality with object has, and also position and the mass distribution with rotating shaft is that shape, size and density are relevant.Moment of inertia has extremely important effect for the theory study of science and engineering.And this experiment of measuring rotation inertia of three-wire pendulum has study requirement in most colleges and universities, and has offered corresponding experimental courses.Yet at present the instrument in the school laboratory is in measuring process, because the error of the deviation that testee is put when measuring, so that whole experiment is difficult to the experiment effect that reaches satisfied, also affected to a certain extent the understanding of student to moment of inertia.The utility model adopts accurately scale location putting position, and direct reading, has greatly improved the precision of measurement.This measuring equipment is flexible.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of three-line pendulum rotational inertia measuring instrument, efficiently solves the larger problem of measuring error.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of three-line pendulum rotational inertia measuring instrument is provided, comprise support, the upper disk of rack-mount end, the lower disc that connects upper disk by three suspension wires, 4 countersunk head slotted holes are arranged above the described lower disc, the length direction of described countersunk head slotted hole is the radial direction of lower disc, described countersunk head slotted hole is circumferentially uniform along the upper disc of lower disc, described countersunk head slotted hole is carved with scale in the both sides of its length direction, described scale take in the center of circle as zero point, described countersunk head slotted hole has angle at the upper disc of lower disc, on the described countersunk head slotted hole angle slide block is housed, have a through hole that bolt is housed on the described slide block, described bolt passes the countersunk head slotted hole and stretches out below the lower disc, and the end that described bolt stretches out connects measured piece.
Described lower disc is made by the material of even density.
Described countersunk head slotted hole has the scale take millimeter as unit in the both sides of its length direction.
Beneficial effect
The bolt of the utility model by increasing movable sliding block and can locating, standard the putting and measuring of testee, be convenient to the installation and removal of tested object.The scale design of countersunk head slotted hole length direction has increased the function of three-line pendulum turning radius dimensional measurement, can be by the registration of directly reading the turning radius behind the slide block location.Design of the present utility model can reduce unnecessary position and put deviation and dimensional measurement error.Simplify the flow process of experimental implementation and greatly improved the accuracy of experiment.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is dish type measured piece 8..
Fig. 3 is cylindricality measured piece 8.
Local enlarged diagram when Fig. 4 is 4 cylindricality measured pieces 8 of the utility model installation.
Local enlarged diagram when Fig. 5 is 1 dish type measured piece 8 of the utility model installation.
Fig. 6 is the local enlarged diagram above the utility model lower disc 3.
Fig. 7 is the local enlarged diagram of the utility model lower disc 3 sides.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only are used for explanation the utility model and are not used in the scope of the present utility model that limits.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Extremely shown in Figure 7 such as Fig. 1, a kind of three-line pendulum rotational inertia measuring instrument, comprise support 1, be installed in the upper disk 2 of support 1 upper end, the lower disc 3 that connects upper disk 2 by three suspension wires 9,4 countersunk head slotted holes 4 are arranged above the described lower disc 3, the length direction of described countersunk head slotted hole 4 is radial direction of lower disc 3, described countersunk head slotted hole 4 is circumferentially uniform along the upper disc of lower disc 3, described countersunk head slotted hole 4 is carved with scale in the both sides of its length direction, described scale take in the center of circle as zero point, described countersunk head slotted hole 4 has angle at the upper disc of lower disc 3, on described countersunk head slotted hole 4 angles slide block 5 is housed, and has a through hole that bolt 6 is housed on the described slide block 5, described bolt 6 passes countersunk head slotted hole 4 and stretches out below the lower disc 3, and the end that described bolt 6 stretches out connects measured piece 8.
Described lower disc 3 is made by the material of even density.
Described countersunk head slotted hole 4 has the scale take millimeter as unit in the both sides of its length direction.
When three-line pendulum uses operation, adjust first the support of three-line pendulum, so that suspension wire is isometric, lower disc keeps horizontal level.The required centre of gyration size of foundation during test, the coarse adjustment slide position, and below lower disc, supporting with it object under test (containing bolt hole) is installed (right cylinder is installed for paired symmetry, and annulus is single installation), the again position of accurate adjustment slide block by the bolt at countersunk head slotted hole place.After having finished the laying of experiment object, then can carry out follow-up reading, period measurement and calculating.Can turn bolt after experiment is finished, unload successively testee.
Claims (3)
1. three-line pendulum rotational inertia measuring instrument, comprise support (1), be installed in the upper disk (2) of support (1) upper end, lower disc (3) by disk (2) in three suspension wires (9) connection, it is characterized in that, 4 countersunk head slotted holes (4) are arranged above the described lower disc (3), the length direction of described countersunk head slotted hole (4) is the radial direction of lower disc (3), described countersunk head slotted hole (4) is circumferentially uniform along the upper disc of lower disc (3), described countersunk head slotted hole (4) is carved with scale in the both sides of its length direction, described scale take in the center of circle as zero point, described countersunk head slotted hole (4) has angle at the upper disc of lower disc (3), on described countersunk head slotted hole (4) angle slide block (5) is housed, there is a through hole that bolt (6) is housed on the described slide block (5), described bolt (6) passes countersunk head slotted hole (4) and stretches out below the lower disc (3), and the end that described bolt (6) stretches out connects measured piece (8).
2. a kind of three-line pendulum rotational inertia measuring instrument according to claim 1 is characterized in that, described lower disc (3) is made by the material of even density.
3. a kind of three-line pendulum rotational inertia measuring instrument according to claim 1 is characterized in that, described countersunk head slotted hole (4) has the scale take millimeter as unit in the both sides of its length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220346535 CN202770589U (en) | 2012-07-17 | 2012-07-17 | Rotational inertia measuring instrument of three-line pendulum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220346535 CN202770589U (en) | 2012-07-17 | 2012-07-17 | Rotational inertia measuring instrument of three-line pendulum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202770589U true CN202770589U (en) | 2013-03-06 |
Family
ID=47777153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220346535 Expired - Fee Related CN202770589U (en) | 2012-07-17 | 2012-07-17 | Rotational inertia measuring instrument of three-line pendulum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202770589U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107680450A (en) * | 2017-10-17 | 2018-02-09 | 西安电子科技大学 | A kind of Moment of Inertia Using Three-line Pendulum Method instrument |
| CN110411660A (en) * | 2019-08-27 | 2019-11-05 | 潍坊学院 | The three-line pendulum of solid moment of inertia perpendicular axis theorem can be verified |
-
2012
- 2012-07-17 CN CN 201220346535 patent/CN202770589U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107680450A (en) * | 2017-10-17 | 2018-02-09 | 西安电子科技大学 | A kind of Moment of Inertia Using Three-line Pendulum Method instrument |
| CN110411660A (en) * | 2019-08-27 | 2019-11-05 | 潍坊学院 | The three-line pendulum of solid moment of inertia perpendicular axis theorem can be verified |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203364737U (en) | An apparatus for measuring the circularity of the inner/outer surface of a large/medium-sized bearing ring | |
| CN205898448U (en) | Line gear transmission test bench | |
| CN203241019U (en) | Flatness test rack | |
| CN202770589U (en) | Rotational inertia measuring instrument of three-line pendulum | |
| CN204788136U (en) | Quick detection device of inside and outside ring of mounting hole position degree on precise rotating platform bearing | |
| CN103808461A (en) | Device for measuring rotational inertia of rigid body through magnetic suspension rotating platform | |
| CN108571943B (en) | A kind of two cylinder axis intersecting angle self-operated measuring unit of contact | |
| CN203037671U (en) | Test tool used to test performance of acceleration sensors | |
| CN204101578U (en) | Inertia turntable angular speed calibrating installation | |
| CN202947557U (en) | Precise detecting instrument for bearing ring | |
| CN102620891B (en) | Flexible measuring device for center of mass of cabinet and implementation method | |
| CN204007611U (en) | A kind of indoor spectral adjusting support that takes measurement of an angle | |
| CN202547569U (en) | Measuring instrument for quickly measuring repose angle | |
| CN205027425U (en) | Fan -shaped paper pulp abrasive disc quality barycenter detection device of moment of torsion formula | |
| CN201392198Y (en) | Horizontal positioning gradient ranging rod | |
| CN205120054U (en) | Lathe bed way deformation monitoring simulation experiment platform | |
| CN201177548Y (en) | Concave three-wire pendulum chassis | |
| CN204085420U (en) | A kind of precision level drift indicator | |
| CN201909609U (en) | Angle measuring and detecting tool | |
| CN203908548U (en) | Triangular gradienter | |
| CN111994769A (en) | Pod balancing device and balancing method | |
| CN108759772B (en) | Dial for angle identification and three-dimensional laser scanner target with same | |
| CN101158612A (en) | Steps concave surface coaxal three-wire pendulum | |
| CN205373615U (en) | Detect utensil of examining of disc part terminal surface equally -divided groove angle | |
| CN105135989A (en) | Portable arc hole distance measuring instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20150717 |
|
| EXPY | Termination of patent right or utility model |