CN111619832A - Air bag type safety protection device of oil gas bearing system - Google Patents
Air bag type safety protection device of oil gas bearing system Download PDFInfo
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- CN111619832A CN111619832A CN202010482273.XA CN202010482273A CN111619832A CN 111619832 A CN111619832 A CN 111619832A CN 202010482273 A CN202010482273 A CN 202010482273A CN 111619832 A CN111619832 A CN 111619832A
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- air bag
- gasbag
- air
- supporting
- bearing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G7/00—Simulating cosmonautic conditions, e.g. for conditioning crews
Abstract
The invention discloses an air bag type safety protection device of an oil-gas supporting system, which comprises a bearing plate and air bag protection components, wherein the bearing plate and the air bag protection components are connected through a limiting mechanism, the air bag protection components comprise air bag groups and bearing frames, the air bag groups are arranged on the bearing frames and can rotate and radially slide on the bearing frames, three air bag groups are arranged on each bearing frame, and an installation support is arranged between each two air bag groups. The invention has the characteristic of low supporting rigidity, can shorten the safety distance and further realize the transverse stable support of the test piece in a small inclination angle state. Meanwhile, the action area of the supporting force is increased, the supporting angle can be adjusted, the uniform surface contact load of the supporting surface is ensured, the local pressure on a test piece is reduced, and the device is particularly suitable for the transverse stable support of a large-size low-rigidity structural member.
Description
Technical Field
The invention belongs to a free boundary simulation technology, and particularly relates to an air bag type safety protection device of an oil-gas bearing system.
Background
One of the bases and the basis of the design of a stabilization system of the space vehicle, the calculation of the dynamic load of the whole rocket structure and the analysis of the rocket/vehicle dynamics coupling is to master the dynamics characteristics of the space vehicle, so how to accurately acquire the structural dynamics parameters of the space vehicle is directly related to the success or failure of the flight of the space vehicle. At present, the most effective and direct acquisition means is to carry out a full arrow mode test of the spacecraft. The implementation of the dynamic characteristic test of the spacecraft needs to simulate the free-free boundary condition of the flight state of the spacecraft. China has matured the related technology of the free boundary simulation of the conventional-size aerospace craft structure and accumulates abundant experience. It can be said that the prior art has reached the leading level of the foreign correlation test technique. However, with the development of a new type of a novel carrier developed by the country, some disadvantages appear in the traditional classic steel wire rope suspension technology, for example, with the large size of the novel carrier, a full rocket modal test field with a larger size, namely a full rocket vibration tower, needs to be constructed in a matching manner, and the cost is increased; in addition, the problem that the precision of the structural dynamic characteristic parameters is influenced due to the vibration of steel wire ropes when the steel wire ropes are suspended in a certain state can occur. Therefore, a novel boundary simulation technology is developed, namely, a free boundary simulation technology based on the oil-gas bearing principle is developed, compared with a classical vertical suspension mode, the free boundary simulation technology does not have vertical stability under the state without a transverse stabilizing system, a more complex transverse stabilizing device is required to ensure the centering state and the vertical stability of the system, and meanwhile, the rigidity design of the transverse stabilizing device also meets the requirements of additional mass and additional rigidity specified in relevant standards.
The free boundary simulation system based on the oil-gas bearing has larger static instability compared with the traditional suspension free boundary simulation system. Therefore, the design of the safety protection device of the free boundary simulation system based on the oil-gas bearing is necessary to be matched, and larger transverse support protection is required for the safety protection of the inclined state of the large-size and heavy-weight test piece.
The safety protection device of the traditional test piece free boundary simulation system is designed by mostly adopting a metal structural member to build a frame, the frame is fixed with a fixed platform or is nested, then a felt is pasted on the inner side of the frame, and the safety distance between the safety protection device and a test piece is kept about 100 mm. The design scheme is widely applied to the anti-toppling safety protection of the small-size structural member, and the requirements on the local strength of the test piece are low because the toppling transverse supporting force of the small-size structural member is small. However, for large-sized structural members such as heavy-duty carrying, a large transverse supporting force is required for the dumping of the structural members, but in order to meet the local strength requirement of the structure of the test piece, a larger acting area is required for the transverse supporting device, and the traditional design concept cannot meet the use requirement through amplification.
Disclosure of Invention
In order to solve the problems, the invention provides an air bag type safety protection device of an oil-gas bearing system, a felt is replaced by a grouping air bag, the safety distance between the safety protection device and a test piece is shortened, the inclination angle of the test piece is reduced, meanwhile, the air bag can provide a larger supporting force action area, and the inclination safety protection requirement of a large-size and large-mass structural piece is further met.
The utility model provides an oil gas supporting system gasbag formula safety device, includes load board and gasbag protection component, and both connect through stop gear, gasbag protection component includes gasbag group and load frame, and gasbag group installs on load frame, can rotate and radial slip on load frame, and every load frame installs three gasbag groups of group, has a erection support between every two sets of gasbag groups.
The limiting mechanism comprises two swing rods and a guide groove arranged on the force bearing plate, one end of each swing rod is connected with the mounting support through a pin shaft, the other end of each swing rod is connected with a sliding block in the guide groove, the sliding block moves in the guide groove in an oriented mode, and a reset spring is arranged on the sliding block in the moving direction and a reset spring is arranged below the sliding block.
Furthermore, the guide groove cover plate is connected to the two ends of the guide groove.
Furthermore, a threaded hole is reserved in the guide groove cover plate.
The airbag group comprises two airbags.
Furthermore, the two air bags are stacked up and down, the two sides of each air bag are bound together through a connecting belt between the air bags, and a through hole is formed between the two air bags.
Furthermore, the air bag comprises an inner container, and an elastic coating layer is arranged on the outer side of the air bag.
Further, the air bag is provided with an air leakage prevention valve.
The invention has the following beneficial effects:
the air bag type safety protection device has the characteristic of low support rigidity, can shorten the safe distance, and further realizes the transverse stable support of the test piece in a small inclination angle state. Meanwhile, the action area of the supporting force is increased, the supporting angle can be adjusted, the uniform surface contact load of the supporting surface is ensured, the local pressure on a test piece is reduced, and the device is particularly suitable for the transverse stable support of a large-size low-rigidity structural member.
Drawings
FIG. 1 is a schematic view of a bladder set composition;
FIG. 2 is a schematic view of the composition of an airbag protection component;
FIG. 3 is a schematic view of an air bag restraint assembly restraining mechanism;
FIG. 4 is a schematic view of the connection of two airbag protection components;
FIG. 5 is a schematic view of a airbag type safety shield apparatus;
fig. 6 is a schematic view showing an installation state of the airbag type safety guard;
wherein, 1-air bag; 2-connecting the straps between the airbags; 3-a force bearing frame; 4, mounting a support; 5-oscillating bar; 6-a slide block; 7-a guide groove; 8-a guide groove cover plate; 9-a return spring; 10-under the return spring; 11-bearing plate
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and the detailed description. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the invention without making creative efforts, shall fall within the scope of the claimed invention.
As shown in figure 1, because the size of a test piece is large, and a large-size air bag is fewer in engineering, in order to reduce the cost and improve the reliability of the system, the invention adopts a scheme that a plurality of groups of small air bags are connected in parallel; the air bag 2 is in a structural form of containing an inner container and an anti-cutting coating layer on the outer side and is provided with an air leakage prevention valve. The two air bags 1 are stacked up and down, the two sides of the air bags 1 are bundled together through the connecting belt 2 between the air bags, and a through hole state is formed between the air bags 1, and finally an air bag group state is formed.
As shown in figure 2, the air bag group composed of two air bags is arranged on the force bearing frame 3, and each force bearing frame 3 is provided with any number of air bag groups to form an air bag protective component. The force bearing frame 3 of each air bag protection component comprises a plurality of mounting supports 4, and the air bag group mounted on the mounting supports 4 has the capability of rotating and radially sliding in a certain range; and an installation support 4 is arranged between every two air bag groups, and the installation support 4 is used for connecting a limiting mechanism.
As shown in fig. 3, the limiting mechanism has the function of supporting the weight of the whole airbag protection component, and has a certain spatial movement range, so as to ensure that the airbag protection component provides a supporting force state, and the spatial position change of the limiting mechanism can ensure that the airbag protection component can adapt to the supporting state of the surface inclination of the test piece and the elastic deformation displacement requirement of the pressed airbag. One end of each of two swing rods 5 of the limiting mechanism is connected with a mounting support 4 on the force bearing frame 3 of the air bag protection component through a pin shaft, the other end of each swing rod is connected with a slide block 6 in a guide groove 7, the slide block 6 moves in the guide groove 7 in an oriented mode, and an upper reset spring 9 and a lower reset spring 10 are arranged in the moving direction of the slide block 6, so that the original mounting state of the air bag protection component is recovered after the stressed state of the air bag protection component is changed into the unstressed state; at the two ends of the guide groove 7 are guide groove cover plates 8 for mounting the slide 6 and the return spring upper 9 and the return spring lower 10. Threaded holes are reserved on the guide groove cover plate 8 and used for adjusting the upper part 9 of the return spring and the lower part 10 of the return spring, and therefore the limited space position adjusting capacity of the control supporting position of the air bag protection component is achieved. The guide groove 7 can be arranged on the bearing plate 11 according to the requirement, and the bearing plate 11 is arranged on an operation platform on the test site.
And (3) installing the air bag protection device according to the structural state of the test piece, wherein the number and the installation interval of the air bag protection components are included, and the support area of the air bag protection device is ensured to meet the local strength requirement of the structural part.
After the installation scheme is determined, the limiting mechanisms are installed on the bearing plate according to the positions, each air bag protection component is connected with the two limiting mechanisms, and the installation work is carried out by installing the pin shaft on the hole position, so that the installation workload is simplified; meanwhile, the air bags of each group of air bag protection components are in a non-inflated state before installation, and the design of light weight ensures convenient and rapid installation;
after all the air bag protection components are installed, the air bags are pressurized to a specified pressure range through pressure monitoring. The air inlet valve of the air bag is closed, if the air bag needs to be maintained and damaged, only the corresponding air bag protection component needs to be disassembled to be replaced or maintained, and the use and maintenance cost is reduced.
The specific implementation mode of the invention is illustrated by taking a certain engineering example as an example:
1) firstly, determining the part of a test piece which can be used for a transverse safety protection support, wherein the test piece needs to be fully transversely prevented from toppling over and safely protected based on a modal test system of oil-gas bearing;
2) calculating the lateral supporting force required to be provided by the lateral safety protection supporting part in the maximum inclined state of the test piece; the calculation method is that the toppling moment of the gravity center in the maximum inclined state is equal to the balance moment of the transverse safety protection transverse supporting force, and the calculation result is obtained. In the embodiment, the diameter of the test piece is 2.5m, the gravity center is 10m, the transverse supporting position is 12m, the safety distance of the transverse supporting position is 0.1m, and the mass of the test piece is 100000kg, so that the supporting force required to be provided by the transverse supporting position in the inclined state is 7000N;
3) the air bag type selection mainly determines the size range of the supporting height of the air bag, mainly according to the pressure state of the supporting force state provided by the air bag on a test piece, and two air bags 1 are connected into an air bag group through a connecting belt 2 between the air bags; the allowable pressure of the transverse supporting position of the test piece is 20MPa, the axial angle range of the transverse support is 5 degrees, and the supporting height size of the air bag is not less than 160 mm;
4) determining the technical state of installation of the transverse safety protection support bearing plate 11 on an operation platform of a test site, and guiding the design of the bearing plate 11; the operating platform of the test site in the embodiment is of a circular structure with the diameter of 3m, and the outer diameter of the transverse safety protection supporting force bearing plate is matched with the 3m platform;
5) determining the length size range of the air bag 1 according to the design state of the bearing plate 11;
6) every three airbag groups with different numbers are sleeved in the component bearing frame 3 to form an airbag protection component;
7) mounting the mounting support 4 in place on the bearing plate 11;
8) the air bag protective component is connected with the bearing plate 11 through the mounting support 4;
9) after all the air bag protection components are installed in place, the position of the adjusting slide block 6 is positioned in the middle of the installation support 4, so that the spatial position of the air bag protection components is ensured to be in a transverse supporting state;
10) filling gas into the air bag 1, keeping the air bag at a working pressure state of 0.05Mpa, and observing whether the working states of the swing rod 5, the slide block 6, the upper reset spring 9 and the lower reset spring 10 are smooth or not;
11) during use, the tightness and pressure state of the airbag 1 are checked.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides an oil gas supporting system gasbag formula safety device, its characterized in that includes bearing plate and gasbag protection component, and both connect through stop gear, gasbag protection component includes gasbag group and bearing frame, and gasbag group installs on bearing frame, can rotate and radial slip on bearing frame, and every bearing frame installation three gasbag groups have a erection support between every two sets of gasbag groups.
2. The safety device according to claim 1, wherein the limiting mechanism comprises two swing rods and a guide groove arranged on the bearing plate, one end of each swing rod is connected with the mounting support through a pin shaft, the other end of each swing rod is connected with a slide block in the guide groove, the slide block moves in the guide groove in an oriented mode, and a return spring is arranged above and below the slide block in the moving direction.
3. A safety shield according to claim 2, wherein guide slot cover plates are attached to both ends of the guide slot.
4. A safety shield according to claim 3, wherein a threaded hole is left in the guide slot cover plate.
5. The safety shield apparatus of claims 1-4 wherein the airbag module includes two airbags.
6. A safety arrangement according to claim 5, wherein the two air-bags are stacked one above the other, the two sides of the air-bags being bound together by inter-bag connecting straps, there being a through-hole between the two air-bags.
7. A safety shield according to claim 6, wherein the air-bag includes an inner bladder and an outer flexible covering.
8. A safety shield apparatus according to claim 7, wherein said air bag has an air leak prevention valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010482273.XA CN111619832B (en) | 2020-07-16 | 2020-07-16 | Air bag type safety protection device of oil gas bearing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010482273.XA CN111619832B (en) | 2020-07-16 | 2020-07-16 | Air bag type safety protection device of oil gas bearing system |
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| Publication Number | Publication Date |
|---|---|
| CN111619832A true CN111619832A (en) | 2020-09-04 |
| CN111619832B CN111619832B (en) | 2021-09-28 |
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| CN202010482273.XA Active CN111619832B (en) | 2020-07-16 | 2020-07-16 | Air bag type safety protection device of oil gas bearing system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2913798A (en) * | 1952-12-10 | 1959-11-24 | Claire J Breguet | Manufacture of hollow rounded ele-ments of prestressed concrete |
| DE202004002183U1 (en) * | 2004-02-12 | 2005-03-24 | Merlaku Kastriot | Brake for a spacecraft takes the form of a quickly inflatable double-walled structure with at least one airtight chamber |
| WO2007039652A1 (en) * | 2005-10-06 | 2007-04-12 | Eads Casa Espacio S.L. | Apparatus for connecting/separating a launch vehicle and a satellite |
| RU2642210C1 (en) * | 2016-12-22 | 2018-01-24 | Александр Александрович Перфилов | Aeronautic craft |
| CN107914898A (en) * | 2017-11-20 | 2018-04-17 | 中国运载火箭技术研究院 | A kind of carrier rocket level recycling protection landing mechanism, device and workflow |
-
2020
- 2020-07-16 CN CN202010482273.XA patent/CN111619832B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2913798A (en) * | 1952-12-10 | 1959-11-24 | Claire J Breguet | Manufacture of hollow rounded ele-ments of prestressed concrete |
| DE202004002183U1 (en) * | 2004-02-12 | 2005-03-24 | Merlaku Kastriot | Brake for a spacecraft takes the form of a quickly inflatable double-walled structure with at least one airtight chamber |
| WO2007039652A1 (en) * | 2005-10-06 | 2007-04-12 | Eads Casa Espacio S.L. | Apparatus for connecting/separating a launch vehicle and a satellite |
| RU2642210C1 (en) * | 2016-12-22 | 2018-01-24 | Александр Александрович Перфилов | Aeronautic craft |
| CN107914898A (en) * | 2017-11-20 | 2018-04-17 | 中国运载火箭技术研究院 | A kind of carrier rocket level recycling protection landing mechanism, device and workflow |
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| Publication number | Publication date |
|---|---|
| CN111619832B (en) | 2021-09-28 |
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