CN107340150B - Eight-point free suspension device for carrier rocket full rocket modal test and installation method thereof - Google Patents
Eight-point free suspension device for carrier rocket full rocket modal test and installation method thereof Download PDFInfo
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- CN107340150B CN107340150B CN201710693930.3A CN201710693930A CN107340150B CN 107340150 B CN107340150 B CN 107340150B CN 201710693930 A CN201710693930 A CN 201710693930A CN 107340150 B CN107340150 B CN 107340150B
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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
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
Abstract
The invention relates to an eight-point free suspension device for a carrier rocket full rocket modal test and an installation method thereof, which are applied to modal tests of a binding carrier rocket and other adaptive carriers. The eight-point free hanging device comprises: the device comprises a bearing beam, a single-point suspension system and a transverse stabilizing system, wherein two single-point suspension systems are respectively suspended on each side beam of the bearing beam, so as to suspend a booster, and the simulation of the free-free boundary of the whole carrier rocket is realized by means of eight single-point suspension systems and one transverse stabilizing system. The eight-point free suspension device and the installation method thereof can effectively simulate the free-free boundary of a new generation of carrier rocket and meet the requirements of a carrier rocket flight state simulation test.
Description
Technical Field
The invention relates to an eight-point free suspension device for a carrier rocket full rocket modal test and an installation method thereof, which are applied to modal tests of a binding carrier rocket and other adaptive carriers.
Background
With the continuous development of aerospace technology, demands of manned lunar engineering, space station construction and the like are increasingly urgent, and higher demands are put on the carrying capacity of the carrier rocket. The prior carrier rocket cannot meet new requirements. The new generation of large-diameter binding carrier rockets developed in China can greatly improve the carrying capacity, can meet the requirements of manned lunar climbing and space station construction, but greatly change the diameter and structural form, increase the core-level diameter from original 3.35 meters to 5 meters, increase the diameter of the booster from original 2.25 meters to 3.35 meters, and greatly increase the heights of the core-level and the booster, so that the size of a single booster is equivalent to that of the whole rocket in the past. Because of the large scale and complex structure of the rocket, the supporting points of the whole rocket are arranged on four thrusters, while the supporting points of the traditional rocket are all arranged at the bottom of the core stage.
The newly developed carrier rocket must develop a full rocket modal test before first flying, the modal test relates to success and failure of rocket flying, and important parameters are provided for carrier rocket dynamics model correction, control system design and load design. In the modal test, the whole carrier rocket is required to be simulated into a flight state and is not influenced by other boundary constraints, and the simulation method is generally to freely suspend the rocket so as to realize a free-free boundary. The free suspension device according to the relevant test standard rocket must meet several requirements of strength, rigidity, stability and frequency and be matched with the structural characteristics of the launch vehicle. However, the new generation carrier rocket has the disadvantages of increased mass, increased flexibility and changed support points of the whole rocket, and the conventional free suspension device and the mounting method of the carrier rocket cannot be applied to the new generation carrier rocket. Therefore, a free suspension system matched with the new generation of carrier rocket has to be redesigned according to the characteristics of the new generation of carrier rocket, and the simulation of the carrier rocket flight boundary in the modal test is realized so as to obtain accurate modal parameters.
Meanwhile, in the prior art, related data about a novel space eight-point free suspension device of a carrier rocket disclosed and published are not found.
Disclosure of Invention
First, the technical problem to be solved
In order to meet the requirements, the invention provides the eight-point free suspension device for the full rocket modal test of the carrier rocket and the installation method thereof, which can effectively simulate the free-free boundary of a new generation carrier rocket and meet the requirements of the carrier rocket flight state simulation test.
(II) technical scheme
Eight-point free suspension device for full rocket modal test of carrier rocket, comprising:
the bearing cross beam is in a cross beam structure and is provided with four side cross beams, and the bearing cross beam is taken as an inherent facility of a test site to bear the weight of the whole carrier rocket;
the single-point suspension system is eight in number and is used for suspending all four thrusters of the carrier rocket to realize simulation of a free boundary;
the transverse stabilizing system is a flexible system which does not affect the free boundary of the carrier rocket and is arranged at the upper part of the carrier rocket to prevent the carrier rocket from toppling;
two single-point suspension systems are respectively suspended on each side beam of the bearing beam, so that an booster is suspended, and the simulation of the free-free boundary of the whole carrier rocket is realized by means of eight single-point suspension systems and one transverse stabilizing system.
Further, the supporting points of the carrier rocket are arranged on four boosters, the bottom of the core stage is not bearing, each two points of the eight-point free suspension device are used for supporting one booster, each booster is provided with a bearing ring, the lower part of each bearing ring is provided with a triaxial moving device, the triaxial moving device plays a role in supporting and moving before the boosters are suspended, and the bearing rings are used for bearing the weight of one booster and serve as intermediate connecting pieces of a single-point suspension system and the boosters.
Further, the single point suspension system includes:
the connecting device is connected with the well-fixed bearing cross beam of the test site;
height adjusting means for adjusting the height of the single point suspension system;
the force measuring system is used for measuring the stress condition of the single-point suspension system;
the spring cylinder has certain elasticity, so that the longitudinal frequency of the whole single-point suspension system meets the test specification requirement;
the pulling plate is used for connecting the height adjusting device and the spring cylinder;
an adjusting pull rod and a rotating mechanism for increasing the operation convenience of the single-point suspension system;
the length of the single-point suspension system steel wire rope is adjustable according to the height of the carrier rocket;
the pulley device is used for being connected with a bearing ring on the booster.
Further, the lateral stabilization system includes: the carrier rocket comprises four upright posts, adjusting rods, spring groups, steel wire ropes of a transverse stabilizing system, wrapping belts and carrier rocket bodies, wherein the wrapping belts are wound around the carrier rocket bodies, the steel wire ropes of the transverse stabilizing system, the spring groups and the adjusting rods are sequentially connected in series and connected with the upright posts in the vibrating tower floor, and the four upright posts are located at four corners of a square.
The installation method of the eight-point free suspension device comprises the following steps:
s1, mounting a single-point suspension system on a bearing beam;
s2, installing a single-point suspension system;
s3, preparing a booster before hoisting;
s4, hoisting the booster into the field and installing;
and S5, vertically hanging the carrier rocket by using the eight-point free hanging device.
Further, the step S1 specifically includes: and (3) moving the cross beams with the well-shaped bearing force in the test site to a proper position, determining the distance between the four side cross beams according to the size of the carrier rocket, and then sequentially installing two sets of single-point suspension systems on the four side cross beams respectively, wherein the distance between the two sets of single-point suspension systems is determined according to the size of the booster, and the total eight sets of single-point suspension systems are vertically suspended on the supporting cross beams for standby.
Further, the step S2 specifically includes: all parts contained in the single-point suspension system are ready, a connecting device is firstly installed on a bearing cross beam by using a crane, and then a height adjusting system, a force measuring system, a pulling plate, a spring cylinder, an adjusting pull rod, a rotating mechanism and a single-point suspension system steel wire rope and pulley device are sequentially installed from top to bottom.
Further, the step S3 specifically includes: and placing the triaxial moving devices at the bottoms of the four boosters of the carrier rocket at proper positions, and fixedly mounting the bearing ring on the triaxial moving devices.
Further, the step S4 specifically includes: the four boosters are sequentially hung into a test site by using a crane, the boosters are sequentially placed on a pre-fixed bearing ring, and the position of the boosters is properly adjusted by adopting a triaxial moving device at the bottom of the bearing ring so that the boosters are positioned between two single-point suspension systems which are suspended in place in advance.
Further, the step S5 specifically includes: and sequentially connecting two sets of single-point suspension systems corresponding to each booster with the bearing ring, and then adjusting a height adjusting device on the single-point suspension system to lift the carrier rocket, and adjusting the height of each single-point suspension system according to the force measuring system to enable the carrier rocket to achieve a vertical free suspension state.
(III) beneficial effects
The invention adopts the eight-point free suspension method to set suspension points on the booster of the carrier rocket, adapts to a new supporting point arrangement mode designed by a new generation of carrier rocket, and overcomes the defect that the prior suspension device adopts four-point suspension to only support rocket core stages. The eight-point free suspension device is additionally provided with the distributed force measuring system, the wide-range height adjusting system and the triaxial movable supporting device, so that the problem of adjusting the verticality of the multipoint free suspension system is solved. The installation method of the eight-point free suspension system is designed according to the brand-new tower entering flow and structural characteristics of the new generation rocket, and the one-time free suspension success of the whole bundled rocket with one-core-stage four-boosting is ensured. The installation method overcomes the defects of the four-point type suspension device and the installation method thereof in the prior art.
Drawings
The eight-point free hanging device shown in figure 1 is a schematic structural view.
A single booster free-hanging schematic of the eight point free-hanging device depicted in fig. 2.
The single point suspension system of the eight point free suspension illustrated in fig. 3 is schematically illustrated.
Figure 4 is a schematic diagram of a lateral stabilization system for an eight point free hanging device.
The reference numerals are as follows:
the device comprises a 1-bearing beam, a 2-single-point suspension system, a 3-transverse stabilizing system, a 4-booster, a 5-bearing ring, a 6-triaxial moving device, a 7-connecting device, an 8-height adjusting device, a 9-force measuring system, a 10-pulling plate, a 11-spring cylinder, a 12-adjusting pull rod, a 13-rotating mechanism, a 14-single-point suspension system steel wire rope, a 15-pulley device, a 16-upright post, a 17-adjusting rod, a 18-spring group, a 19-transverse stabilizing system steel wire rope, a 20-belting and a 21-carrier rocket body.
Detailed Description
See figure 1 for a schematic structural diagram of an eight-point free suspension device for a full rocket modal test of a launch vehicle:
the invention relates to an eight-point free suspension device for a full rocket modal test of a carrier rocket, which comprises the following components:
the bearing beam 1 is in a cross structure and is provided with four side beams, and is taken as an inherent facility of a test site to bear the weight of the whole carrier rocket;
the single-point suspension system 2 is eight in number and is used for suspending all four thrusters of the carrier rocket to realize simulation of a free boundary;
the transverse stabilizing system 3 is a flexible system which does not affect the free boundary of the carrier rocket and is arranged at the upper part of the carrier rocket to prevent the carrier rocket from toppling;
two single-point suspension systems 2 are respectively suspended on each side beam of the bearing beam 1 for suspending a booster, and the simulation of the free-free boundary of the whole carrier rocket is realized by means of eight single-point suspension systems 2 and a transverse stabilizing system 3.
Referring to the single booster free-hanging schematic of fig. 2:
the support points of the carrier rocket are arranged on four boosters 4, the bottom of the core stage is not stressed, each two points of the eight-point free suspension device are used for supporting one booster 4, each booster 4 is provided with a bearing ring 5, the lower part of each bearing ring 5 is provided with a triaxial moving device 6, the triaxial moving device 6 plays a role in supporting and moving before the boosters 4 are suspended, and the bearing rings 5 are used for bearing the weight of one booster 4 and serve as intermediate connecting pieces of the single-point suspension system 2 and the boosters 4.
Referring to fig. 3, a schematic structural diagram of a single-point suspension system of the eight-point free-suspension device is shown:
the single point suspension system 2 of the eight point free suspension device of the present invention comprises:
the connecting device 7 is connected with the bearing cross beam 1 fixed on the test site;
height adjustment means 8, preferably an oil cylinder, for adjusting the height of said single point suspension system 2;
a force measuring system 9 for measuring the stress condition of the single-point suspension system 2;
the spring cylinder 11 has certain elasticity, so that the longitudinal frequency of the whole single-point suspension system 2 meets the test specification;
a pulling plate 10 for connecting the height adjusting device 8 and the spring cylinder 11;
an adjustment lever 12 and a rotation mechanism 13 for increasing the operation convenience of the single-point suspension system 2;
a single point suspension system cable 14, the length of which is adjustable according to the height of the launch vehicle;
pulley means 15 for connection with the load ring 5 on the booster.
Referring to fig. 4, a schematic diagram of a lateral stabilization system of the eight-point free-hanging device is shown:
the transverse stabilizing system 3 comprises upright posts 16, adjusting rods 17, spring groups 18, transverse stabilizing system steel wire ropes 19, wrapping belts 20 and carrier rocket bodies 21, wherein the wrapping belts 20 are wound around the carrier rocket bodies 21, the wrapping belts 20 are sequentially connected with the transverse stabilizing system steel wire ropes 19, the spring groups 18 and the adjusting rods 17 in series to be connected with the upright posts 16 in the vibration tower layer, and the number of the upright posts 16 is four and located at four corners of a square. The transverse stabilizing system 3 has certain elasticity and ensures that the rocket does not topple in a vertical state.
The method for installing the eight-point free suspension device in the carrier rocket full rocket modal test comprises the following steps:
s1, mounting a single-point suspension system 2 on the bearing beam 1: the method comprises the steps of moving a well-shaped bearing cross beam 1 in a test site to a proper position, determining the distance between four side cross beams according to the size of a carrier rocket, sequentially installing two sets of single-point suspension systems 2 on the four side cross beams respectively, determining the distance between the two sets of single-point suspension systems 2 according to the size of a booster 4, and vertically suspending eight sets of single-point suspension systems 2 on the bearing cross beam 1 for standby;
s2, installing a single-point suspension system 2: the method comprises the steps that all parts contained in a single-point suspension system 2 are ready, a connecting device 7 is firstly installed on a bearing beam 1 by using a crane, and then a height adjusting system 8, a force measuring system 9, a pull plate 10, a spring cylinder 11, an adjusting pull rod 12, a rotating mechanism 13, a single-point suspension system steel wire rope 14 and a pulley device 15 are sequentially installed from top to bottom;
s3, preparing a booster 4 before hoisting: the three-axis moving device 6 at the bottom of the four boosters 4 of the carrier rocket is placed at a proper position, and the bearing ring 5 is fixedly arranged on the three-axis moving device 6;
s4, hoisting the booster 4 into the field and installing: the four boosters 4 are sequentially hung into a test site by a crane, the boosters 4 are sequentially placed on a pre-fixed bearing ring 5, and the position of the boosters 4 is properly adjusted by a triaxial moving device 6 at the bottom of the bearing ring 5 so as to be positioned between two single-point suspension systems 2 which are suspended in place in advance;
s5, vertically hanging the carrier rocket by using the eight-point free hanging device: and (3) sequentially connecting two sets of single-point suspension systems 2 corresponding to each booster 4 with the bearing ring 5, then adjusting a height adjusting device 8 on the single-point suspension system 2 to lift the carrier rocket, and adjusting the height of each single-point suspension system 2 according to the force measuring system 9 to enable the carrier rocket to achieve a vertical free suspension state.
Claims (9)
1. Eight-point free suspension device for full rocket modal test of carrier rocket is characterized in that:
comprising the following steps:
the bearing cross beam is in a cross beam structure and is provided with four side cross beams, and the bearing cross beam is taken as an inherent facility of a test site to bear the weight of the whole carrier rocket;
the single-point suspension system is eight in number and is used for suspending all four thrusters of the carrier rocket to realize simulation of a free boundary;
the transverse stabilizing system is a flexible system which does not affect the free boundary of the carrier rocket and is arranged at the upper part of the carrier rocket to prevent the carrier rocket from toppling;
two single-point suspension systems are respectively suspended on each side beam of the bearing beam, so as to suspend a booster, and the simulation of the free-free boundary of the whole carrier rocket is realized by means of eight single-point suspension systems and a transverse stabilizing system;
the single point suspension system includes:
the connecting device is connected with the well-fixed bearing cross beam of the test site;
height adjusting means for adjusting the height of the single point suspension system;
the force measuring system is used for measuring the stress condition of the single-point suspension system;
the spring cylinder has certain elasticity, so that the longitudinal frequency of the whole single-point suspension system meets the test specification requirement;
the pulling plate is used for connecting the height adjusting device and the spring cylinder;
an adjusting pull rod and a rotating mechanism for increasing the operation convenience of the single-point suspension system;
the length of the single-point suspension system steel wire rope is adjustable according to the height of the carrier rocket;
the pulley device is used for being connected with a bearing ring on the booster.
2. The launch vehicle whole rocket modal test eight-point free suspension device as claimed in claim 1, wherein:
the support points of the carrier rocket are arranged on four boosters, the bottom of the core stage is not bearing, each two points of the eight-point free suspension device are used for supporting one booster, each booster is provided with a bearing ring, the lower part of each bearing ring is provided with a triaxial moving device, the triaxial moving device plays a role in supporting and moving before the boosters are suspended, and the bearing rings are used for bearing the weight of one booster and serve as intermediate connecting pieces of a single-point suspension system and the boosters.
3. The launch vehicle whole rocket modal test eight-point free suspension device as claimed in claim 1, wherein:
the lateral stabilization system includes: the carrier rocket comprises four upright posts, adjusting rods, spring groups, steel wire ropes of a transverse stabilizing system, wrapping belts and carrier rocket bodies, wherein the wrapping belts are wound around the carrier rocket bodies, the steel wire ropes of the transverse stabilizing system, the spring groups and the adjusting rods are sequentially connected in series and connected with the upright posts in the vibrating tower floor, and the four upright posts are located at four corners of a square.
4. A method of installing an eight point free hanging device as claimed in claim 1, comprising the steps of:
s1, mounting a single-point suspension system on a bearing beam;
s2, installing a single-point suspension system;
s3, preparing a booster before hoisting;
s4, hoisting the booster into the field and installing;
and S5, vertically hanging the carrier rocket by using the eight-point free hanging device.
5. The method of installing according to claim 4, wherein:
the step S1 specifically includes: and (3) moving the cross beams with the cross shapes in the test field to a proper position, determining the distance between the four side cross beams according to the size of the carrier rocket, and then sequentially installing two sets of single-point suspension systems on the four side cross beams respectively, determining the distance between the two sets of single-point suspension systems according to the size of the booster, wherein eight sets of single-point suspension systems are vertically suspended on the cross beams for standby.
6. The method of installation of claim 5, wherein:
the step S2 specifically includes: all parts contained in the single-point suspension system are ready, a connecting device is firstly installed on a bearing cross beam by using a crane, and then a height adjusting device, a force measuring system, a pulling plate, a spring cylinder, an adjusting pull rod, a rotating mechanism and a single-point suspension system steel wire rope and pulley device are sequentially installed from top to bottom.
7. The method of installing according to claim 4, wherein:
the step S3 specifically includes: and placing the triaxial moving devices at the bottoms of the four boosters of the carrier rocket at proper positions, and fixedly mounting the bearing ring on the triaxial moving devices.
8. The method of installing according to claim 4, wherein:
the step S4 specifically includes: the four boosters are sequentially hung into a test site by using a crane, the boosters are sequentially placed on a pre-fixed bearing ring, and the position of the boosters is properly adjusted by adopting a triaxial moving device at the bottom of the bearing ring so that the boosters are positioned between two single-point suspension systems which are suspended in place in advance.
9. The method of installing according to claim 4, wherein:
the step S5 specifically includes: and sequentially connecting two sets of single-point suspension systems corresponding to each booster with the bearing ring, and then adjusting a height adjusting device on the single-point suspension system to lift the carrier rocket, and adjusting the height of each single-point suspension system according to the force measuring system to enable the carrier rocket to achieve a vertical free suspension state.
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| CN110907208B (en) * | 2019-11-26 | 2021-09-14 | 蓝箭航天空间科技股份有限公司 | Modal test method of carrier rocket |
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| CN114216667A (en) * | 2021-12-15 | 2022-03-22 | 北京机电工程研究所 | Hanging method for modal test and modal test method |
| CN114810889B (en) * | 2022-07-01 | 2022-10-14 | 中国飞机强度研究所 | High-bearing low-rigidity supporting device for aircraft vibration test |
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