CN-121994492-A - Connecting device and application thereof in rocket launching test equipment

Abstract

The application belongs to the technical field of aerospace equipment, and particularly relates to a connecting device and application thereof in rocket launching test equipment. The application provides a connecting device for an arrow body and a test bed, which comprises a connecting plate, a connecting base, a connecting assembly and a connecting rod, wherein the upper surface of the connecting plate is contacted with the bottom surface of the arrow body and is fixed through the connecting assembly, the lower surface of the connecting base is contacted with the upper surface of the test bed and is fixed through the connecting assembly, the connecting assembly is connected with the lower surface of the connecting plate and the upper surface of the connecting base, and two ends of the connecting rod are respectively connected with the side surface of the arrow body and the upper surface of the test bed or the connecting base. The application also provides application of the connecting device in rocket launching test equipment. The arrow body and the test bed are respectively connected through the connecting plate and the connecting base, and then the connecting plate and the connecting base are fixed, so that the connection is more convenient and quick, and a larger operation space is not needed; simultaneously, the connecting rod can provide lateral pulling force, promotes the connection stability between arrow body and the test bed.

Inventors

• LIU SHAOBO
• HUO LIANG
• DENG JUNLEI
• MA CHENGUANG
• ZHANG WEIXI
• Ji Hongshu
• YOU XUCHEN
• Xing Kongken
• SUN WEI

Assignees

• 江苏深蓝航天有限公司

Dates

Publication Date

20260508

Application Date

20260116

Claims (10)

1. 1. A connecting device for an arrow body and a test bed is characterized by comprising a connecting plate, a connecting base, a connecting assembly and a connecting rod, wherein the upper surface of the connecting plate is in contact with the bottom surface of the arrow body and is fixed through the connecting assembly, the lower surface of the connecting base is in contact with the upper surface of the test bed and is fixed through the connecting assembly, a plurality of first through holes are formed in the outer edge of the connecting plate, a plurality of second through holes are formed in the outer edge of the connecting base, the first through holes are in one-to-one correspondence with the second through holes, the connecting assembly penetrates through the first through holes and the second through holes to fix the lower surface of the connecting plate and the upper surface of the connecting base, and two ends of the connecting rod are respectively connected with the side surface of the arrow body and the upper surface of the test bed or the connecting base.
2. 2. The connection device according to claim 1, wherein the number of the first through holes is n, the radius of the first through holes is r, The calculation formula of the number n of the first through holes is as follows: ; wherein Tsj is the total thrust load of the engine of the arrow body; is used for the allowable stress of the connecting screw.
3. 3. The connecting device according to claim 1 or 2, wherein the connecting rod has an angle θ with the arrow body, The calculation formula of the included angle theta between the connecting rod and the arrow body is as follows: ; Wherein, ts is the transverse load of the rocket body generated when the engine swings to the maximum angle; f is the safety coefficient of the arrow body; f is the maximum bearable tension of the connecting rod.
4. 4. A connecting device according to claim 3, wherein the connecting rod has an outer diameter d, The calculation formula of the outer diameter d of the connecting rod is as follows: ; Wherein F 1 is the tensile force born by the connecting rod; and allowable stress for the connecting rod material.
5. 5. The connecting device according to claim 1, wherein the connecting plate is provided with a plurality of third through holes, the third through holes are in one-to-one correspondence with the installation holes on the bottom surface of the arrow body, and the connecting assembly penetrates through the third through holes and is fixedly connected with the connecting plate and the arrow body.
6. 6. The connecting device according to claim 1, wherein the connecting base is provided with a plurality of fourth through holes, the fourth through holes are in one-to-one correspondence with mounting holes on the upper surface of the test bed, and the connecting assembly penetrates through the fourth through holes and is fixedly connected with the connecting base and the test bed.
7. 7. The connection device of any one of claims 1 to 4, wherein the connection rod is a length adjustable connection rod.
8. 8. The connecting device of claim 7, wherein the connecting rod comprises a first joint, a threaded rod and a second joint, two ends of the threaded rod are respectively connected with the first joint and the second joint, threads are respectively arranged on the inner walls of the first joint and the second joint and matched with the threads on two ends of the threaded rod, the threaded rod is respectively rotated relative to the first joint and the second joint and used for adjusting the length of the connecting rod, the other end of the first joint is connected with the arrow body, and the other end of the second joint is connected with the test bed or the connecting base.
9. 9. The connection device of claim 8, wherein the connecting rod further comprises a drag hook disposed between the second joint and the test bed or connection base.
10. 10. Use of a connection device according to any one of claims 1 to 9 in rocket launch testing apparatus.

Description

Connecting device and application thereof in rocket launching test equipment Technical Field The application belongs to the technical field of aerospace equipment, and particularly relates to a connecting device and application thereof in rocket launching test equipment. Background The rocket engine power test is an important component of engine development work, and is carried out on a specially constructed test bed during test, specifically, an rocket body with an engine is arranged on the test bed, so that an engine assembly can complete required work according to a preset program, and the rocket engine power test mainly aims at verifying the feasibility of engine design, the reliability of technology and a method for checking, checking and debugging. In the prior art, in order to meet the test requirements, the rocket is connected with the test bed at a height of about 20m, a large enough operation platform is needed to be established at the high altitude for connection, the connection difficulty is high, the test bed is high in construction cost, the rocket body is connected with the test bed at the bottom through a base or an adapter flange, the connection stability is poor when the rocket body is subjected to lateral force during test, the rocket body is connected by using a pull rod in a lateral direction, the connection length is fixed, the connection position requirement of the rocket body is high, the operation difficulty is high, and the strength is not easy to break when the pull rod is subjected to torsional force. Therefore, a connecting device and application thereof in rocket launching testing equipment are developed, which are used for solving the technical defect that in the prior art, a test bed and an rocket body are connected and need to be operated on a large-area operation platform in high altitude, and the technical defect is a problem to be solved urgently by the person skilled in the art. Disclosure of Invention Based on the above, it is necessary to provide a connecting device and application thereof in rocket launching test equipment aiming at the technical defect that in the prior art, a large-area operation platform in high altitude is required to operate when a test bed is connected with an rocket body. The application provides a connecting device for an arrow body and a test bed, which comprises a connecting plate, a connecting base, a connecting assembly and a connecting rod, wherein the upper surface of the connecting plate is contacted with the bottom surface of the arrow body and is fixed through the connecting assembly, the lower surface of the connecting base is contacted with the upper surface of the test bed and is fixed through the connecting assembly, a plurality of first through holes are formed in the outer edge of the connecting plate, a plurality of second through holes are formed in the outer edge of the connecting base, the first through holes are in one-to-one correspondence with the second through holes, the connecting assembly penetrates through the first through holes and the second through holes to connect the lower surface of the connecting plate with the upper surface of the connecting base, and two ends of the connecting rod are respectively connected with the side surface of the arrow body and the upper surface of the test bed or the connecting base. In one embodiment, the number of the first through holes is n, the radius of the first through holes is r, The calculation formula of the number n of the first through holes is as follows:; wherein Tsj is the total thrust load of the engine of the arrow body; is used for the allowable stress of the connecting screw. In one embodiment, the connecting rod has an angle theta with the arrow body, The calculation formula of the included angle theta between the connecting rod and the arrow body is as follows:; Wherein, ts is the transverse load of the rocket body generated when the engine swings to the maximum angle; f is the safety coefficient of the arrow body; f is the maximum bearable tension of the connecting rod. In one embodiment, the connecting plate is provided with a plurality of third through holes, the third through holes are in one-to-one correspondence with the installation holes on the bottom surface of the arrow body, and the connecting assembly penetrates through the third through holes and is fixedly connected with the connecting plate and the arrow body. In one embodiment, the connecting base is provided with a plurality of fourth through holes, the fourth through holes are in one-to-one correspondence with the mounting holes on the upper surface of the test bed, and the connecting assembly penetrates through the fourth through holes and is fixedly connected with the connecting base and the test bed. In one embodiment, the connecting rod is a length adjustable connecting rod. In one embodiment, the connecting rod comprises a first connector, a threaded rod and a second connector, wherein two