CN108061647B - Multifunctional self-balancing platform for static test - Google Patents
Multifunctional self-balancing platform for static test Download PDFInfo
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- CN108061647B CN108061647B CN201711361462.6A CN201711361462A CN108061647B CN 108061647 B CN108061647 B CN 108061647B CN 201711361462 A CN201711361462 A CN 201711361462A CN 108061647 B CN108061647 B CN 108061647B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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Abstract
The invention provides a multifunctional self-balancing platform for a static test, which adopts a cylindrical structure; the center of the cylindrical platform is provided with a bearing point, M bearing points are uniformly distributed on the same circumference of the inner ring of the cylindrical platform, P radial ray grooves are uniformly distributed in the circumferential direction between the bearing point of the inner ring of the cylindrical platform and the central bearing point of the cylindrical platform, Q radial ray grooves are also uniformly distributed outside the bearing point of the inner ring of the cylindrical platform along the circumferential direction, a plurality of concentric arc grooves are also distributed in the distribution area of the Q radial ray grooves, and N bearing points are uniformly distributed on the same circumference of the outer ring of the cylindrical platform; m, N, P, Q are all even numbers. On the basis of completing the traditional platform test task and the purpose, the invention can greatly reduce the investment of the foundation and the factory building, reduce the dependence on the foundation and greatly reduce most installation errors; the design of many mounting grooves on platform surface has increased the variety of installation, can use in a flexible way in actual assembly, guarantees going on smoothly of multiple different experiments.
Description
Technical Field
The invention relates to the field of static tests, in particular to a multifunctional self-balancing platform for a static test.
Background
The static test plays an important role in experimental research, and particularly, the axial compression and axial tension tests can occupy more than 80 percent of the total test number.
Traditional static test platform only uses for fixed test piece, and the ground that must rely on for the heavy load loading force is fixed drops into, and the ground drops into greatly, and the cost is many, and the ground is mostly cement mixed cast steel, has size deviation, and the pouring process difference leads to final installation error great, wastes time and energy during actual mounting platform.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a multifunctional self-balancing platform for static tests, all installation points and loading points are arranged on the platform, the platform is machined by a vertical milling machine, the machining error is controllable, the condition that a foundation error needs to be considered during installation is fundamentally avoided, a series of errors such as the loading error caused by the foundation error are solved, the platform has strong practicability, and meanwhile, a plurality of bearing points are designed on the surface of the platform, so that the multifunctional use of the platform can be realized.
The technical scheme of the invention is as follows:
the multifunctional self-balancing platform for the static test is characterized in that: a cylindrical structure is adopted; the center of a cylindrical platform is provided with a bearing point, M bearing points are uniformly distributed on the same circumference of the inner ring of the cylindrical platform by taking the center of the platform as the center of a circle, P radial ray grooves are uniformly distributed between the bearing points of the inner ring of the cylindrical platform and the bearing points of the center of the cylindrical platform along the circumferential direction by taking the center of the platform as the center of a circle, Q radial ray grooves are also uniformly distributed outside the bearing points of the inner ring of the cylindrical platform along the circumferential direction, a plurality of concentric arc grooves by taking the center of the platform as the center of a circle are also distributed in the distribution area of the Q radial ray grooves, and N bearing points are uniformly distributed on the same circumference of the outer ring of the cylindrical platform by taking the center of; m, N, P, Q are all even numbers;
the force bearing point is an axial stepped through hole, and an internal thread shaft sleeve is fixed in the through hole and is used for being connected with an external force application structure;
the radial ray groove is rectangular in cross section, and a square bolt is arranged in the radial ray groove and connected with an external stress application structure.
Further preferred scheme, the multi-functional self-balancing platform for static test is characterized in that: m-4, N-8, P-24, and Q-48.
Further preferred scheme, the multi-functional self-balancing platform for static test is characterized in that: and a radial reinforcing rib plate is arranged at the position of the back of the cylindrical platform where the bearing points are arranged.
Advantageous effects
On the basis of completing the test task and the purpose of the traditional platform, the multifunctional self-balancing platform can greatly reduce the investment of a foundation and a workshop, reduce the dependence on the foundation and greatly reduce most installation errors; the design of many mounting grooves on platform surface has increased the variety of installation, can use in a flexible way in actual assembly, guarantees going on smoothly of multiple different experiments.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1: a schematic front view of a multifunctional self-balancing platform;
FIG. 2: a partial sectional view of the multifunctional self-balancing platform;
FIG. 3: a bottom schematic view of the multifunctional self-balancing platform;
FIG. 4: a schematic cross-sectional view of a ray slot;
FIG. 5: a schematic diagram of an example of a multifunctional self-balancing platform;
wherein: 1-platform positioning fixing holes, 2-ray grooves, 3-arc grooves, 4-inner ring platforms, 5-platform surfaces, 6-rib plates, 7-bearing points and 8-ray groove sections, wherein F1-F13 are bearing points in the drawing.
Detailed Description
The following detailed description of embodiments of the invention is intended to be illustrative, but not limiting, of the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
The design of the multifunctional self-balancing platform bearing point on the test platform in the embodiment can meet the requirement that the test is carried out on the test platform, and the dependence on the foundation is eliminated; the design of the platform surface ray groove can cover a series of dimensional test piece tests; the design of the arc-shaped groove can realize various platform surface fixing modes, and the loading diversity can be greatly improved.
A bearing point is designed in the middle of the multifunctional self-balancing platform, and a single loading point loading test can be carried out; the inner ring of the multifunctional self-balancing platform is provided with four bearing points, and the four points can be loaded simultaneously; the outer ring is provided with eight bearing points, and eight points can be loaded simultaneously; the design of a plurality of loading points changes the load limitation of the loading of two points in the past, reduces the bearing capacity of each loading point, and can greatly reduce the design difficulty of the loading tool. The number of the bearing points of the inner ring and the outer ring can be changed according to the size of the platform, but the number of the bearing points is required to be even so as to ensure the stress balance of the platform during loading.
The multifunctional self-balancing design is that the inner ring and the outer ring are provided with two rings of bearing points, the inner ring bearing point can be used for carrying out a test piece with the diameter phi of below 1100 and is provided with 24 ray grooves, the outer ring bearing point can be used for carrying out a test piece with the diameter phi of 1100-phi 3000, and 48 bearing grooves are designed; the design of dividing into two circles of force bearing points can use a smaller loading tool when a test piece with a smaller diameter is carried out, so that the installation difficulty is greatly reduced; and when a large-diameter test piece is carried out, the bearing capacity of the multifunctional self-balancing platform can be ensured by the plurality of ray grooves.
The ray groove adopts installation square head bolt mode load-carrying, because of the ray groove is rectangular shape structure, the hexagon head bolt only has partial contact with the ray groove, and square bolt is bigger with the ray groove contact surface, can increase ray groove usable floor area, reinforcing bolt bearing capacity, and square bolt is the same with ray groove cross-sectional structure simultaneously, and reducible installation degree of difficulty is convenient for realize the butt joint with the product.
The multifunctional self-balancing platform is designed into a frame type structure, so that the bearing capacity can be designed, the investment of fixed assets is greatly reduced, and the frame type structure can eliminate excess stress; the bearing capacity of the bearing point is realized by strengthening the bearing point part through the bottom reinforcing rib.
As shown in fig. 5, the multifunctional self-balancing platform needs to be used together with a stress application cap, an actuator cylinder, a force sensor, a transition frame and the like during testing, and the multifunctional self-balancing platform plays roles in fixing, mounting, bearing and the like.
Installing a test piece: the product is connected with the transition frame and then installed on a self-balancing platform 2-ray groove, the eight actuating cylinders are installed on force bearing points of the self-balancing platform F1-F8, and the force application cap is connected with the actuating cylinders and the transition frame.
During the test, the actuator cylinder is loaded, the piston rod of the actuator cylinder moves downwards to apply a downward axial force to the product, and the eight loading points are loaded simultaneously to enable the product to bear uniform axial pressure load.
As can be seen from figure 5, the actuating cylinder is installed on a 7-bearing point of the self-balancing platform, and analysis of stress shows that the actual bearing load of the product is that the stress application cap and two ends of the self-balancing platform simultaneously act to enable the product to bear axial pressure load, the load can be changed into axial tension load by building bearing columns, and multiple ray grooves in the surface of the self-balancing platform can enable assembly to be diversified and are more convenient to use.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (3)
1. The utility model provides a multi-functional self-balancing platform for static test which characterized in that: a cylindrical structure is adopted; the center of a cylindrical platform is provided with a bearing point, M bearing points are uniformly distributed on the same circumference of the inner ring of the cylindrical platform by taking the center of the platform as the center of a circle, P radial ray grooves are uniformly distributed between the bearing points of the inner ring of the cylindrical platform and the bearing points of the center of the cylindrical platform along the circumferential direction by taking the center of the platform as the center of a circle, Q radial ray grooves are also uniformly distributed outside the bearing points of the inner ring of the cylindrical platform along the circumferential direction, a plurality of concentric arc grooves by taking the center of the platform as the center of a circle are also distributed in the distribution area of the Q radial ray grooves, and N bearing points are uniformly distributed on the same circumference of the outer ring of the cylindrical platform by taking the center of; m, N, P, Q are all even numbers;
the force bearing point is an axial stepped through hole, and an internal thread shaft sleeve is fixed in the through hole and is used for being connected with an external force application structure;
the radial ray groove is rectangular in cross section, and a square bolt is arranged in the radial ray groove and connected with an external stress application structure.
2. A multifunctional self-balancing platform for static tests according to claim 1, characterized in that: m-4, N-8, P-24, and Q-48.
3. A multifunctional self-balancing platform for static tests according to claim 1, characterized in that: and a radial reinforcing rib plate is arranged at the position of the back of the cylindrical platform where the bearing points are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711361462.6A CN108061647B (en) | 2017-12-18 | 2017-12-18 | Multifunctional self-balancing platform for static test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711361462.6A CN108061647B (en) | 2017-12-18 | 2017-12-18 | Multifunctional self-balancing platform for static test |
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| Publication Number | Publication Date |
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| CN108061647A CN108061647A (en) | 2018-05-22 |
| CN108061647B true CN108061647B (en) | 2021-05-04 |
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| CN201711361462.6A Active CN108061647B (en) | 2017-12-18 | 2017-12-18 | Multifunctional self-balancing platform for static test |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110940574B (en) * | 2019-12-01 | 2022-07-01 | 西安航天动力测控技术研究所 | Multipoint loading stress application cap for static test |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201780197U (en) * | 2010-08-20 | 2011-03-30 | 中国航空工业第六一八研究所 | Transition plate device for vibration test |
| CN202362004U (en) * | 2011-11-30 | 2012-08-01 | 上海航天精密机械研究所 | Universal switching device for static test of carrying type capsule |
| CN104457448A (en) * | 2014-10-21 | 2015-03-25 | 上海航天精密机械研究所 | Combined platform for rocket body structural static strength tests |
| CN105203341A (en) * | 2014-06-13 | 2015-12-30 | 北京强度环境研究所 | Large tank hanging static testing device |
| CN207556832U (en) * | 2017-12-18 | 2018-06-29 | 西安航天动力测控技术研究所 | A kind of self-balancing platform for meeting more size slow test requirements |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915679B (en) * | 2010-08-06 | 2011-12-14 | 西安理工大学 | Multi-spindle-linkage shifting and loading device for machining centre and method for detecting distribution of static stiffness |
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2017
- 2017-12-18 CN CN201711361462.6A patent/CN108061647B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201780197U (en) * | 2010-08-20 | 2011-03-30 | 中国航空工业第六一八研究所 | Transition plate device for vibration test |
| CN202362004U (en) * | 2011-11-30 | 2012-08-01 | 上海航天精密机械研究所 | Universal switching device for static test of carrying type capsule |
| CN105203341A (en) * | 2014-06-13 | 2015-12-30 | 北京强度环境研究所 | Large tank hanging static testing device |
| CN104457448A (en) * | 2014-10-21 | 2015-03-25 | 上海航天精密机械研究所 | Combined platform for rocket body structural static strength tests |
| CN207556832U (en) * | 2017-12-18 | 2018-06-29 | 西安航天动力测控技术研究所 | A kind of self-balancing platform for meeting more size slow test requirements |
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