CN112067265A - Testing device suitable for static force of boundary capable of sliding in one direction - Google Patents
Testing device suitable for static force of boundary capable of sliding in one direction Download PDFInfo
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- CN112067265A CN112067265A CN202010839556.5A CN202010839556A CN112067265A CN 112067265 A CN112067265 A CN 112067265A CN 202010839556 A CN202010839556 A CN 202010839556A CN 112067265 A CN112067265 A CN 112067265A
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- sliding
- slide rail
- platform
- testing device
- static force
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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
Abstract
The invention provides a testing device suitable for a static force of a one-way sliding boundary, which comprises: the device comprises a mounting platform 1, a slide rail unit 2 and a switching ring 3; the mounting platform 1 is arranged on the outer side of the adapter ring 3; the adapter ring 3 is connected with the slide rail unit 2; the mounting platform 1 comprises: the device comprises a platform body 4, a limiting groove 5 and a sliding rail limiting interface 6; the testing device suitable for the boundary static force capable of sliding in one direction is fixedly connected with the ground through the platform body 4, and the limiting groove 5 can control the installation precision of the sliding rail; the mounting platform 1 is connected with the sliding rail unit 2 through a sliding rail limiting interface. The invention can realize the constraint condition that only the freedom degree along the sliding direction of the sliding block is released and other freedom degrees are constrained in the static test.
Description
Technical Field
The invention relates to the field of a test strength test method of a structural part, in particular to a test device suitable for a boundary static force capable of sliding unidirectionally.
Background
In a launch vehicle with booster, the booster tanks are typically connected to the core stage by tie-down point connections. In order to realize universal interchangeability of the storage tank between the boosting and the core stage, uniform force transmission design needs to be carried out on a nose cone and a binding form of the booster. In order to verify the uniform force transmission characteristic of the booster nose cone, the booster needs to be released in a degree of freedom along a specific direction on the constraint in a ground simulation static test, and the installation boundary form of the current static test is a fixed support, and all degrees of freedom are constrained. In order to simulate the use environment more truly and verify the uniform force transmission characteristic of the booster nose cone, a test method with a one-way sliding boundary needs to be invented, so that the test verification requirement of the uniform force transmission characteristic of the booster nose cone is met.
Patent document CN106156386B discloses a static test and prediction method for a shell reinforcement structure. The static prediction simulation result of the structure under different load effects and different boundary processing modes is compared with test data. On one hand, the method solves the systematic comparison and comprehensive evaluation related errors of the static test and the static prediction simulation, and solves the analysis and comparison method of only small data of extreme individual characteristic points in the past; on the other hand, through the comparison analysis at different levels, influence factor data of real tests or simulation calculation in different boundary simulation modes, different solving modes, different test methods and the like are accumulated. On the other hand, the relation between the test and the prediction can be intuitively reflected by comparing the cloud picture, the curve and the similarity, and whether the test is continued or not can be determined by evaluating the data, so that the problems of test pieces or personal and property safety exist. The patent can not well meet the test verification requirement of the uniform force transmission characteristic of the booster nose cone
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a testing device suitable for the static force of a boundary capable of sliding unidirectionally.
The invention provides a testing device suitable for the static force of a one-way sliding boundary, and a testing method of the static force of the one-way sliding boundary, which comprises the following steps: the mounting platform comprises a platform, a limiting groove and a sliding rail limiting interface, is a steel plate with high flatness requirement and enough thickness, and is used for improving the rigidity of the mounting platform to remove adverse factors influencing test results due to uneven field of a test room. The slide rail contains track, slider, the slide rail is the high accuracy slide rail that can directly purchase on the market, looks experimental load lectotype, if the load is great, optional with heavy slide rail in order to satisfy experimental demand. The adapter ring is used for connecting the test piece and the slide rail, and holes are formed in the adapter ring according to the number of the slide rails and the fixing form of the test piece, so that the fixing requirement of the test piece is met.
Furthermore, in the installation platform, the platform is generally made of steel, and the flatness and the parallelism of the upper end surface and the lower end surface of the platform are required to be high and the thickness of the platform is enough, so that high rigidity and high installation precision of the slide rail are provided, and the platform is ensured not to deform after being fixed.
Furthermore, in the mounting platform, the platform is used for fixing the test platform and the ground of a test room, holes can be formed in the platform according to the actual situation of the test room, the platform is fixed on a ground rail in a foundation bolt mode, the width of the platform can be properly enlarged, a pressing block is used for compacting the platform and the ground, and finally the purpose of fixing the test mounting platform and the ground is achieved.
Furthermore, in the installation platform, the limiting grooves are formed by machining through a machine tool in the production and machining process of the installation platform, so that the parallel precision among the multiple groups of limiting grooves is guaranteed, the machining size of the limiting grooves is determined according to the size of the lower end face of the slide rail, and the matching of the limiting grooves and the rails is generally in transition matching with high precision.
Furthermore, in the installation platform, the slide rail limiting interface is used for connecting the installation platform with the rails of the plurality of groups of slide rails, the interface is a threaded hole, the limiting interface in each group of limiting grooves is generally connected with the slide rails through 2-3 connecting holes, and the connection strength is ensured while the rails cannot rotate after being loaded.
Furthermore, in the slide rail, 2-3 counter bores need to be opened on the track, the connection of track and mounting platform is realized through the bolt, and the bolt generally adopts hexagon socket head cap screw, and the step depth of counter bore needs to guarantee that the bolt head must not exceed the track up end after the hexagon socket head cap screw is installed.
Furthermore, in the slide rail, the slide block contains a plurality of spherical or cylindrical balls, so that the slide block and the track slide in a rolling friction mode with a small friction coefficient, and finally the purpose of releasing the freedom degree along the sliding direction of the test piece is realized. The slider upper end has 4 screw holes that are used for being connected with the upper end keysets generally, and its screw thread size can carry out the design by oneself according to bearing the weight of the requirement.
Furthermore, in the adapter ring, the slide rail connecting hole is a counter bore through which the adapter ring is connected with the plurality of groups of slide blocks, the bolt generally adopts an inner hexagon bolt, and the step depth of the counter bore needs to ensure that the bolt head does not exceed the upper end surface of the adapter ring after the inner hexagon bolt is installed.
Furthermore, in the adapter ring, the test piece connecting hole is generally a threaded hole and is used for connecting with a test piece, so that the fixed support connection between the test piece and the adapter ring is realized.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention can realize the constraint condition that only the freedom degree along the sliding direction of the sliding block is released and other freedom degrees are constrained in the static test;
2. in the invention, each part needs to be subjected to strength check during design, 2-3 times of safety margin is reserved, and when the slide rail is selected, other load forms except axial load possibly occurring in the test process need to be comprehensively considered, so that all performance indexes of the slide rail can meet the test requirements;
3. the invention comprises the following steps: the mounting platform comprises a platform, a limiting groove and a sliding rail limiting interface, is a steel plate with high flatness requirement and enough thickness, and is used for improving the rigidity of the mounting platform to remove adverse factors influencing test results due to uneven field of a test room. The slide rail contains track, slider, the slide rail is the high accuracy slide rail that can directly purchase on the market, looks experimental load lectotype, if the load is great, optional with heavy slide rail in order to satisfy experimental demand. The adapter ring is used for connecting the test piece and the slide rail, and holes are formed in the adapter ring according to the number of the slide rails and the fixing form of the test piece, so that the fixing requirement of the test piece is met. According to the one-way sliding boundary static test method, only the freedom degree of the test piece along the sliding direction of the slide rail is released, and the bearing requirements can be still met in other freedom degree directions.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram of the general structure of the one-way slidable boundary static test method according to an embodiment of the invention;
FIG. 2 is a schematic view of an installation platform of the unidirectional sliding boundary static test method according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a slide rail of the one-way slidable boundary static test method according to an embodiment of the invention;
FIG. 4 is a schematic view of an adapter ring of the unidirectional slidable boundary static test method according to an embodiment of the invention;
FIG. 5 is a schematic diagram of the overall installation of the unidirectional slidable boundary static test method according to an embodiment of the invention.
In the figure:
mounting platform 1 spacing groove 5
Adapter ring 3 track 7
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1 to 5, the testing device for the static force of the boundary capable of sliding in one direction provided by the invention comprises: the device comprises a mounting platform 1, a slide rail unit 2 and a switching ring 3; the mounting platform 1 is arranged on the outer side of the adapter ring 3; the adapter ring 3 is connected with the slide rail unit 2; the mounting platform 1 comprises: the device comprises a platform body 4, a limiting groove 5 and a sliding rail limiting interface 6; the testing device suitable for the boundary static force capable of sliding in one direction is fixedly connected with the ground through the platform body 4, and the limiting groove 5 can control the installation precision of the sliding rail; the mounting platform 1 is connected with the sliding rail unit 2 through a sliding rail limiting interface.
Preferably, the slide rail unit 2 is characterized in that one or more sets of slide rails are adopted.
Preferably, the method further comprises the following steps: an adapter plate; the slide rail unit 2 includes: a track 7, a slider 8; the track 7 is connected with the limiting groove 5; the sliding block 8 is connected with the adapter plate and forms a rolling friction pair with the track.
Preferably, the adapter ring 3 comprises: a slide rail connecting hole 9 and a test piece connecting hole 10; the slide rail connecting hole 9 is a counter bore.
Preferably, the platform body 4 is fixed to the ground rail in the form of anchor bolts or compacted with the ground using a press block.
Preferably, the rail 7 is connected with the limiting groove 5 through a bolt; the specimen may slide along its length.
Preferably, the sliding block 8 is connected with the adapter plate through a bolt.
Specifically, in one embodiment, a unidirectional slidable boundary static test method includes: the mounting platform 1 comprises a platform 4, a limiting groove 5 and a sliding rail limiting interface 6, wherein the platform is used for fixing the test platform with the ground of a test room and is fixed on a ground rail in a foundation bolt mode or compacted with the ground by using a pressing block; the limiting groove is used for controlling the mounting precision of the sliding rail; the sliding rail limiting interface is used for installing an interface for connecting the platform and the rails of the plurality of groups of sliding rails.
The slide rail 2 comprises a rail 7 and a slide block 8, wherein the rail is used for being connected with a limiting groove on the mounting platform through a bolt, and the test piece can slide along the length direction of the test piece; the sliding block is connected with the adapter plate through a bolt and forms a rolling friction pair with the rail. .
The adapter ring 3 is used for connecting a test piece and a slide rail, and comprises a slide rail connecting hole 9 and a test piece connecting hole 10, wherein the slide rail connecting hole is a countersunk hole formed by connecting a plurality of groups of adapter rings with a plurality of groups of slide blocks; the test piece connecting hole is generally a threaded hole and is used for being connected with a test piece to realize the fixed support connection of the test piece and the adapter ring.
The static test method for the one-way sliding boundary provided by the embodiment can effectively realize the installation form of the one-way sliding boundary of the test piece along the track direction, and specifically comprises the following steps:
as shown in figure 5, the test requires that a certain carrier rocket booster nose cone 12 is subjected to a combined loading test of axial pressure and shearing force for verifying the uniform force transmission characteristic of the nose cone structure, wherein the material numbered 11 is the object of the invention, and an axial loading oil cylinder is arranged in a cabin body and is not clearly shown in the figure. The shear force application oil cylinder 14 transmits the shear force to the bearing wall through the force transmission frame 13, and three binding joints on the nose cone are rigidly fixed on the bearing wall through the binding connecting rods 15. The invention can realize the free sliding of the lower end boundary of the nose cone of the carrier rocket booster along the shearing direction, thereby more truly simulating the real load condition of the storage tank at the lower end of the nose cone in the using process.
By the aid of the innovative design of the one-way sliding boundary, the freedom degree release effect of the test piece along a specific direction is effectively realized, and the real use condition of the booster is more truly simulated.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (8)
1. A testing device suitable for a boundary static force capable of sliding unidirectionally is characterized by comprising: the device comprises a mounting platform (1), a slide rail unit (2) and a switching ring (3);
the mounting platform (1) is arranged on the outer side of the adapter ring (3);
the adapter ring (3) is connected with the slide rail unit (2);
the mounting platform (1) comprises: the platform comprises a platform body (4), a limiting groove (5) and a sliding rail limiting interface (6);
the testing device suitable for the boundary static force capable of sliding in one direction is fixedly connected with the ground through the platform body (4),
the limiting groove (5) can control the mounting precision of the sliding rail;
the mounting platform (1) is connected with the sliding rail unit (2) through a sliding rail limiting interface.
2. A testing device suitable for a static force of a boundary capable of sliding unidirectionally according to claim 1, wherein the slide rail unit (2) adopts one or more sets of slide rails.
3. A testing device adapted for a one-way slidable boundary static force according to claim 1, further comprising: an adapter plate;
the slide rail unit (2) includes: a track (7) and a slide block (8);
the track (7) is connected with the limiting groove (5);
the sliding block (8) is connected with the adapter plate.
4. Testing device adapted to the uni-directional slidable boundary static force according to claim 1 characterized in that the adapter ring (3) comprises: a slide rail connecting hole (9) and a test piece connecting hole (10);
the slide rail connecting hole (9) is a counter bore.
5. A testing device adapted for uni-directional slidable boundary static force according to claim 1, characterized in that the platform body (4) is fixed to the ground rail by means of anchor bolts or compacted with the ground using a press block.
6. A testing device suitable for a boundary static force capable of sliding unidirectionally according to claim 3, wherein the rail (7) is connected with the limiting groove (5) through a bolt.
7. A testing device suitable for a boundary static force capable of sliding unidirectionally according to claim 3, wherein the slider (8) is connected with an adapter plate by a bolt.
8. A testing device suitable for a boundary static force capable of sliding unidirectionally is characterized by comprising: the device comprises a mounting platform (1), a slide rail unit (2) and a switching ring (3);
the mounting platform (1) is arranged on the outer side of the adapter ring (3);
the adapter ring (3) is connected with the slide rail unit (2);
the mounting platform (1) comprises: the platform comprises a platform body (4), a limiting groove (5) and a sliding rail limiting interface (6);
the testing device suitable for the boundary static force capable of sliding in one direction is fixedly connected with the ground through the platform body (4);
the limiting groove (5) can control the mounting precision of the sliding rail;
the mounting platform (1) is connected with the sliding rail unit (2) by adopting a sliding rail limiting interface;
the slide rail unit (2) adopts one or more groups of slide rails;
further comprising: an adapter plate;
the slide rail unit (2) includes: a track (7) and a slide block (8);
the track (7) is connected with the limiting groove (5);
the sliding block (8) is connected with the adapter plate;
the adapter ring (3) comprises: a slide rail connecting hole (9) and a test piece connecting hole (10);
the slide rail connecting hole (9) adopts a counter bore;
the platform body (4) is fixed on a ground rail in a foundation bolt mode or compacted with the ground by using a pressing block;
the track (7) is connected with the limiting groove (5) through a bolt;
the sliding block (8) is connected with the adapter plate through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010839556.5A CN112067265A (en) | 2020-08-19 | 2020-08-19 | Testing device suitable for static force of boundary capable of sliding in one direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010839556.5A CN112067265A (en) | 2020-08-19 | 2020-08-19 | Testing device suitable for static force of boundary capable of sliding in one direction |
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| Publication Number | Publication Date |
|---|---|
| CN112067265A true CN112067265A (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010839556.5A Pending CN112067265A (en) | 2020-08-19 | 2020-08-19 | Testing device suitable for static force of boundary capable of sliding in one direction |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203341A (en) * | 2014-06-13 | 2015-12-30 | 北京强度环境研究所 | Large tank hanging static testing device |
| CN106156386A (en) * | 2015-04-10 | 2016-11-23 | 北京强度环境研究所 | A kind of slow test for housing reinforced structure and predicting method |
| CN107228803A (en) * | 2017-05-09 | 2017-10-03 | 昆明理工大学 | A kind of composite structure pseudo static testing device and method |
| CN107588965A (en) * | 2017-07-25 | 2018-01-16 | 武汉智能控制工业技术研究院有限公司 | A kind of device of car test for static load |
| CN109752155A (en) * | 2019-01-08 | 2019-05-14 | 上海航天精密机械研究所 | Structural member slow test fixed boundary freedom degree discharges system |
-
2020
- 2020-08-19 CN CN202010839556.5A patent/CN112067265A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203341A (en) * | 2014-06-13 | 2015-12-30 | 北京强度环境研究所 | Large tank hanging static testing device |
| CN106156386A (en) * | 2015-04-10 | 2016-11-23 | 北京强度环境研究所 | A kind of slow test for housing reinforced structure and predicting method |
| CN107228803A (en) * | 2017-05-09 | 2017-10-03 | 昆明理工大学 | A kind of composite structure pseudo static testing device and method |
| CN107588965A (en) * | 2017-07-25 | 2018-01-16 | 武汉智能控制工业技术研究院有限公司 | A kind of device of car test for static load |
| CN109752155A (en) * | 2019-01-08 | 2019-05-14 | 上海航天精密机械研究所 | Structural member slow test fixed boundary freedom degree discharges system |
Non-Patent Citations (1)
| Title |
|---|
| 陈秀宁: "《机械基础》", 31 January 1999 * |
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Application publication date: 20201211 |
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| RJ01 | Rejection of invention patent application after publication |