CN113588250A - Coplanar multi-point three-way load synchronous loading static test device and method - Google Patents
Coplanar multi-point three-way load synchronous loading static test device and method Download PDFInfo
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Abstract
The invention provides a coplanar multi-point three-way load synchronous loading static test device and method, and relates to the technical field of spacecraft simulation tests. The device comprises a mounting disc, loading columns, loading levers, a through rod connecting plate and connecting rods, wherein the loading levers are matched to load in three directions in a plane respectively, 3 loading levers are arranged in each direction to be matched with each other, the through rod connecting plate is arranged at the position where the connecting rods are arranged in a crossed mode, and the through rod connecting plate is matched with the loading levers; and a through hole is reserved at the intersection between the loading lever and the loading lever. When the device is used for carrying out satellite bearing tests, loads in three directions of a plurality of loading points in the same plane can be synchronously applied, uncertainty risks and cost brought to the tests by dismounting the satellite structure are avoided, and the efficiency and the scientificity of the tests are improved.
Description
Technical Field
The invention relates to the technical field of spacecraft simulation tests, in particular to a coplanar multi-point three-way load synchronous loading static test device and method.
Background
In the initial sample or model stage of the spacecraft, structural static force tests are required to be carried out for verifying the reasonability of the structural design of the whole satellite and finding that the design is insufficient; due to the diversity of satellite structure bearing and the consideration of the integrity of ground examination, the structure needs to be jointly loaded. When the load bearing points in the same plane in the satellite structure are synchronously loaded with three-directional loads, the load bearing points cannot be implemented due to the interference of the tool.
After the whole satellite is assembled in a static test, the loading tool in the cabin is in a relatively closed environment, the installation state of the loading tool cannot be adjusted by a tester when the working condition is changed, if a conventional test method is adopted, after the test of one working condition is finished, the loading tool of the cabin section above the storage box is sequentially dismounted, the propulsion cabin and the load cabin are separated, the loading tool of the storage box is dismounted, the loading tool in the cabin of the next working condition is sequentially mounted, the cabin section is assembled, and the rest loading tool is mounted, so that a large amount of working condition changing time is spent. In the prior art, a static test device capable of simultaneously meeting loading in three directions through one-time installation does not exist, and the loading test device needs to be further improved.
Disclosure of Invention
In order to realize synchronous loading of three-way loads in the same plane, save time of dismounting and mounting work in a working condition conversion process, avoid risks brought by dismounting and mounting to a test, save cost and improve test efficiency and scientificity, the invention provides a device and a method for synchronous loading static test of multi-point three-way loads in the same plane, and the specific technical scheme is as follows.
A coplanar multi-point three-way load synchronous loading static test device comprises a mounting disc, loading columns, loading levers, a through rod connecting plate and a connecting rod, wherein the loading levers are matched in three directions in a plane to be loaded respectively, and 3 loading levers are arranged in the three directions to be matched with each other; the 3 loading levers are connected with the loading mechanism and the loading column; the cross arrangement position of the connecting rods is provided with a through rod connecting plate, and the through rod connecting plate is matched with the loading lever; and a through hole is reserved at the intersection between the loading lever and the loading lever.
Preferably, the loading mechanism comprises a loading transmission cylinder, a force bearing platform and a force measuring sensor, wherein the force bearing platform applies a load, the loading transmission cylinder is connected with the force bearing platform, and the force measuring sensor is arranged between the loading transmission cylinder and the force bearing platform.
It is also preferable that 3 loading levers are connected in sequence and distribute and transfer the loading force, the first loading lever is connected with the loading transmission cylinder, the first loading lever is connected with the second loading lever, and the second loading lever is connected with the third loading lever through a link.
Preferably, the loading transmission cylinder is connected with a component force point on the first loading lever, two ends of the first loading lever are respectively connected with the second loading lever and the loading column, two ends of the second loading lever are respectively connected with the connecting rod and the loading column, and two ends of the third loading lever are respectively connected with the loading column.
It is also preferred that the force division point on the first loading lever realizes a primary force division in the loading direction; the first loading lever is connected with a component force point on the second loading lever through a connecting rod, and the component force point on the second loading lever realizes secondary component force in the loading direction; the second loading lever is connected with a force component point on the third loading lever through a connecting rod, and the force component point on the third loading lever realizes three times of force components in the loading direction.
Preferably, four mounting discs are arranged in the plane, and the axis of each mounting disc is provided with a loading column; the ends of the 3 loading levers are matched and connected with four loading columns.
It is also preferred that the first direction in the plane is perpendicular to the second direction and the third direction, respectively, the second direction and the third direction being opposite; the first loading lever, the second loading lever and the third loading lever are respectively arranged in three directions in the plane.
A coplanar multi-point three-way load synchronous loading static test method utilizes the coplanar multi-point three-way load synchronous loading static test device, and comprises the following steps: determining the stress condition of combined loading of a plurality of loading points, and setting the positions of the stress points; determining the mounting position of the through rod connecting plate and the position of the through hole according to the positions of the loading lever and the force dividing point; and applying load by using a bearing platform, synchronously loading each loading column in three directions, and adjusting the load size to perform multiple tests.
Further preferably, the load at the position of the loading point is adjusted by changing the size of the load applied by the bearing platform when the working condition is converted in the test process.
It is further preferred that the test device is mounted inside the satellite structure.
The coplanar multi-point three-way load synchronous loading static test device and the method have the advantages that synchronous application of loads of a plurality of loading points in three directions in the same plane is realized in the same plane, mutual interference among tools is avoided due to the structural arrangement of the loading levers, and a satellite structure is not required to be disassembled and assembled in the test process, so that the test accuracy is ensured, and the test efficiency and the test scientificity are improved.
Drawings
FIG. 1 is a schematic structural diagram of a coplanar multi-point three-way load synchronous loading static test device;
FIG. 2 is a schematic view of a through-rod connecting plate;
FIG. 3 is a force diagram of the loading column;
FIG. 4 is a schematic structural view of 3 loading levers;
in the figure: 1-mounting disc, 2-loading column, 3-loading lever, 4-penetrating rod connecting plate, 5-connecting rod, 6-first loading lever, 7-second loading lever, 8-third loading lever and 9-force dividing point.
Detailed Description
The following describes a specific embodiment of a coplanar multi-point three-way load synchronous loading static test device and method provided by the present invention with reference to fig. 1 to 4.
The utility model provides a coplanar multi-point three-way load synchronous loading static test device, includes mounting disc 1, loading post 2, loading lever 3, wears pole even board 4 and connecting rod 5, sets up the loading post on the mounting disc and conveniently exerts load, and a plurality of loading levers are through distributing loading force control loading power, wear the pole even board and have avoided the mutual interference between the loading lever. The loading levers are matched to load in three directions in a plane respectively, and 3 loading levers are arranged in the three directions to be matched with each other. The 3 loading levers are connected with the loading mechanism and the loading columns, 4 loading columns of the test device receive loading in 3 directions, and 3 loading levers are arranged in each direction to load the 4 loading columns respectively. The cross arrangement positions of the connecting rods are provided with the through rod connecting plates which are matched with the loading levers, so that the interference between the loading levers in each loading direction is avoided, and the application of loads in the same plane is realized; the penetrating rod connecting plate is rectangular, an elliptical hole or a rectangular hole is formed in the middle of the penetrating rod connecting plate, and connecting holes are formed in the two ends of the penetrating rod connecting plate. A through hole is reserved at the intersection between the loading lever and the loading lever, so that the application of load is ensured.
The loading mechanism comprises a loading transmission cylinder, a force bearing platform and a force measuring sensor, wherein the force bearing platform applies a load, the loading transmission cylinder is connected with the force bearing platform and transmits the force applied by the force bearing platform, and the force measuring sensor is arranged between the loading transmission cylinder and the force bearing platform and used for monitoring the loading size of the force.
3 loading levers are respectively arranged in the first direction, the second direction and the third direction, the 3 loading levers are sequentially connected and distribute and transfer loading force, the first loading lever 6 is connected with a loading transmission cylinder, and the loading transmission cylinder applies force on the first loading lever 6. The first loading lever 6 is connected with the second loading lever 7, the second loading lever 7 is connected with the third loading lever 8 through a connecting rod, and the 3 loading levers are sequentially connected and transfer the load. Specifically, the loading transmission cylinder is connected with a force dividing point on a first loading lever 6, two ends of the first loading lever 6 are respectively connected with a second loading lever 7 and a loading column, two ends of the second loading lever 7 are respectively connected with a connecting rod and the loading column, the connecting rod is connected with the force dividing point on a third loading lever 8, and two ends of the third loading lever 8 are respectively connected with the loading column.
The force distribution point on the first loading lever 6 realizes the first component force in the loading direction, and the distribution proportion of the force applied by the first loading lever to the loading column and the second loading lever 7 can be adjusted by adjusting the length of the first force distribution point on the first loading lever 6. The first loading lever 6 is connected with a force dividing point 9 on the second loading lever 7 through a connecting rod, the force dividing point on the second loading lever 7 realizes secondary force dividing in the loading direction, and the position of the force dividing point on the second loading lever 7 can be adjusted to realize the loading of the second loading lever 7 to a loading column and a third loading lever 8; the second loading lever 7 is connected with a force component point on the third loading lever 8 through a connecting rod, and the force component point on the third loading lever 8 realizes three times of force components in the loading direction.
Four mounting discs are arranged in the plane, the axle center of each mounting disc is provided with a loading column, and a loading lever transmits loading force to the loading column. The 3 loading levers are connected with four loading columns through end parts in a matching mode, and the four loading columns distribute loads in proportion. The first direction in the plane is respectively vertical to the second direction and the third direction, the second direction is opposite to the third direction, the first direction is the X direction, the second direction is the-X direction, and the third direction is the Y direction. A first loading lever, a second loading lever and a third loading lever are respectively arranged in three directions in a plane, 9 loading levers are arranged in the plane, and the length of the third loading lever is equal to the distance between 2 loading columns.
A coplanar multi-point three-way load synchronous loading static test method utilizes the coplanar multi-point three-way load synchronous loading static test device, and comprises the following steps: determining the stress condition of combined loading of a plurality of loading points, setting the positions of the score points, calculating the component force proportion of each loading point according to the positions of the score points, and determining the loading stress of each loading point after loading in each direction and accurately calculating the loading stress of each loading point. The mounting position of the through rod connecting plate and the position of the through hole are determined according to the positions of the loading lever and the force dividing point, and the through rod connecting plate avoids mutual interference between the connecting rods. The bearing platform is utilized to apply load, each loading column is synchronously loaded in three directions, and multiple tests can be carried out by adjusting the load. Because the test device is installed inside the satellite structure, the loading mode can directly adjust the working condition, the satellite structure does not need to be disassembled and assembled again, and the test precision is ensured.
The method adjusts the load at the position of the loading point by changing the size of the load applied by the bearing platform when the working condition is converted in the test process.
The test device realizes synchronous application of loads of a plurality of loading points in three directions in the same plane, mutual interference among tools is avoided due to the structural arrangement of the loading levers, and the satellite structure is not required to be disassembled and assembled in the test process, so that the test accuracy is ensured, and the test efficiency and scientificity are improved.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (10)
1. A coplanar multi-point three-way load synchronous loading static test device is characterized by comprising a mounting disc, loading columns, loading levers, a through rod connecting plate and a connecting rod, wherein the loading levers are matched to load in three directions in a plane respectively, and 3 loading levers are arranged in the three directions respectively and matched with each other; the 3 loading levers are connected with the loading mechanism and the loading column; the cross arrangement position of the connecting rods is provided with a through rod connecting plate, and the through rod connecting plate is matched with the loading lever; and a through hole is reserved at the intersection between the loading lever and the loading lever.
2. The coplanar multi-point three-way load synchronous loading static test device according to claim 1, wherein the loading mechanism comprises a loading transmission cylinder, a force bearing platform and a force measuring sensor, the force bearing platform applies a load, the loading transmission cylinder is connected with the force bearing platform, and the force measuring sensor is arranged between the loading transmission cylinder and the force bearing platform.
3. The coplanar multi-point three-way load synchronous loading static test device according to claim 1, wherein the 3 loading levers are connected in sequence and distribute and transfer loading force, the first loading lever is connected with the loading transmission cylinder, the first loading lever is connected with the second loading lever, and the second loading lever is connected with the third loading lever through a connecting rod.
4. The coplanar multi-point three-way load synchronous loading static test device according to claim 3, wherein the loading transmission cylinder is connected with a component force point on a first loading lever, two ends of the first loading lever are respectively connected with a second loading lever and a loading column, two ends of the second loading lever are respectively connected with a connecting rod and the loading column, and two ends of a third loading lever are respectively connected with the loading column.
5. The coplanar multi-point three-way load synchronous loading static test device according to claim 3, wherein the force division point on the first loading lever realizes a primary force division in the loading direction; the first loading lever is connected with a component force point on the second loading lever through a connecting rod, and the component force point on the second loading lever realizes secondary component force in the loading direction; the second loading lever is connected with a force component point on the third loading lever through a connecting rod, and the force component point on the third loading lever realizes three times of force components in the loading direction.
6. The coplanar multipoint three-way load synchronous loading static test device according to claim 1, wherein four mounting discs are arranged in the plane, and the axis of each mounting disc is provided with a loading column; the ends of the 3 loading levers are matched and connected with four loading columns.
7. A coplanar multipoint three-way load synchronous loading static test device as claimed in claim 1, wherein the first direction in the plane is perpendicular to the second direction and the third direction, respectively, the second direction and the third direction being opposite; the first loading lever, the second loading lever and the third loading lever are respectively arranged in three directions in the plane.
8. An on-plane multi-point three-way load synchronous loading static test method, which utilizes the on-plane multi-point three-way load synchronous loading static test device as claimed in any one of claims 1 to 7, and is characterized by comprising the following steps: determining the stress condition of combined loading of a plurality of loading points, and setting the positions of the stress points; determining the mounting position of the through rod connecting plate and the position of the through hole according to the positions of the loading lever and the force dividing point; and applying load by using a bearing platform, synchronously loading each loading column in three directions, and adjusting the load size to perform multiple tests.
9. The coplanar multi-point three-way load synchronous loading static test method according to claim 8, wherein the load at the position of the loading point is adjusted by changing the magnitude of the load applied by the force bearing platform when the working condition is changed in the test process.
10. A coplanar multi-point three-way load synchronous loading static test method as claimed in claim 8, wherein said test device is installed inside a satellite structure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111036279.5A CN113588250B (en) | 2021-09-06 | 2021-09-06 | Coplanar multi-point three-way load synchronous loading static test device and method |
| PCT/CN2021/122747 WO2023029147A1 (en) | 2021-09-06 | 2021-10-09 | Same-plane multipoint three-way load synchronous loading static force test device and method |
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| CN202111036279.5A CN113588250B (en) | 2021-09-06 | 2021-09-06 | Coplanar multi-point three-way load synchronous loading static test device and method |
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| CN113588250A true CN113588250A (en) | 2021-11-02 |
| CN113588250B CN113588250B (en) | 2022-03-15 |
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| CN114486212A (en) * | 2021-12-31 | 2022-05-13 | 北京空间机电研究所 | Spacecraft substrate static test device and method |
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Also Published As
| Publication number | Publication date |
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| CN113588250B (en) | 2022-03-15 |
| WO2023029147A1 (en) | 2023-03-09 |
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