CN103659757A - Air cushion system applied to accurate positioning general assembly of spacecraft - Google Patents

Abstract

The invention discloses an air cushion system applied to precise positioning and installation of a spacecraft, comprising a plurality of air cushion modules, a pneumatic control box/control system, a trachea reel, and an airbag-type electric drive module. The air cushion modules are symmetrically arranged at the bottom of a two-axis turntable. The pneumatic control box/control system is set on the side of the two-axis turntable, the trachea reel is independently set on the moving car body, the trachea is separately connected to the air cushion module and the airbag-type electric drive module, and the moving roller is set under the airbag-type electric drive module, the pneumatic The control box/control system controls the movement and steering of the lower moving rollers by electrically connecting with the electric drive module. The invention realizes the zero-radius steering of the two-axis turntable and the multi-degree-of-freedom translation function in the plane, and provides basic support for complex load loading and professional testing.

Description

Air Cushion System Applied to the Precise Positioning Assembly of Spacecraft

technical field

The invention belongs to the field of tooling for attitude adjustment of spacecraft, and in particular relates to the integrated design of an air cushion system on a traditional two-axis turntable, so as to realize the increasingly diversified load precise positioning assembly of the spacecraft. the

Background technique

A certain satellite not only has a heavy dry weight (2950kg), but also carries a pair of biplane deployable antennas with a weight of 1.4t. The antenna not only requires a two-axis turntable to realize docking and installation of the star by adjusting the attitude of the star, but also requires a two-axis turntable to carry the star in a factory building with an internal space of no more than 5600mm to achieve steering and translation in order to meet its special test conditions. However, at present, the common two-axis turntable in China mainly uses the wheel train (2 universal wheels, 2 directional wheels) to realize the travel and steering. The requirement of multi-degree-of-freedom translation in the plane of the turntable is difficult to meet the professional test requirements of a certain satellite antenna, thus restricting the precise final assembly of the diversified loads of the subsequent newly developed spacecraft. the

For this reason, it is very important to provide precise assembly equipment that can realize the two-axis turntable within a small range, zero-radius turning and multi-degree-of-freedom translation in any direction in the plane. the

Contents of the invention

The purpose of the present invention is to provide an air cushion system applied to the precise positioning and assembly of spacecraft, aiming to realize the small-scale, zero-radius steering and multi-degree-of-freedom translation in any direction of the two-axis turntable through the air cushion system. the

In order to achieve the above object, the present invention adopts the following technical solutions:

An air cushion system applied to the precise positioning and installation of spacecraft of the present invention includes multiple air cushion modules, a pneumatic control box/control system (pneumatic control box and control system), a tracheal reel, and more than one airbag-type electric drive module , a plurality of air cushion modules are symmetrically arranged at the bottom of the two-axis turntable, the pneumatic control box/control system is arranged on the side of the two-axis turntable, the air pipe reel for winding the air pipe is independently arranged on the mobile vehicle body, and the air pipe is respectively connected with multiple air cushion modules and airbags The pneumatic control box/control system separately adjusts and controls the air pressure of the airbag in the air cushion module and the airbag-type electric drive module. There is a moving roller under the airbag-type electric drive module. The pneumatic control box/control system communicates with the electric drive module. The driving module is electrically connected to control the movement and turning of the moving rollers at its lower part. the

Among them, the pneumatic control box/control system has two control modes: panel control and/or handle control. the

Among them, the air cushion module is arranged at the bottom of the two-axis turntable in the form of sliding insertion. the

Wherein, the air cushion module communicates with the air source through the pneumatic control box/control system. the

Among them, the air cushion module forms a layer of air film between the compressed air and the surface of the supporting ground after the air source is supplied, and supports the two-axis turntable accordingly. the

Among them, the pneumatic control box/control system has the function of monitoring the pipeline pressure, and has the ability to control and adjust the pressure of each gas pipeline. the

This invention breaks through the traditional two-axis turntable that can only use the wheel train mechanism to walk and turn, and applies the air cushion system on the two-axis turntable for the first time, realizing the zero-radius steering and multi-degree-of-freedom translation functions of the two-axis turntable, which is complex The payload installation and professional testing provided basic support, and overcome the key technical difficulties in the final assembly operation of a certain antenna ground test and test process. the

Description of drawings

Fig. 1 is the schematic diagram of the air cushion system applied to the precise positioning and installation of spacecraft of the present invention:

Among them, 1-air cushion module (multiple), 2-tracheal reel, 3-pneumatic control box/control system, 4-airbag electric drive module. the

Detailed ways

Introduced below is as the specific implementation of the content of the present invention, and the content of the present invention will be further clarified below by the specific implementation. Of course, the following specific embodiments are described only to illustrate different aspects of the present invention, and should not be construed as limiting the scope of the present invention. the

As shown in Figure 1, the air cushion system applied to the precise positioning and installation of spacecraft of the present invention includes a plurality of air cushion modules 1, a pneumatic control box/control system 3, a tracheal reel 2, more than one airbag type electric drive module 4 and control system. A plurality of air cushion modules 1 are arranged symmetrically at the bottom of the two-axis turntable, the pneumatic control box/control system 3 is arranged on the side of the two-axis turntable, and the air pipe reel 2 for winding the air pipe is independently arranged on the mobile vehicle body, and the air pipes are respectively connected with multiple air cushion modules 1 and the airbag-type electric drive module 4 are connected separately, and the pneumatic control box/control system 3 adjusts and controls the air pressure of the airbags in the air cushion module 1 and the two airbag-type electric drive modules 4 respectively. For functions such as traveling and steering in the floating state, the inching accuracy can reach 1mm; there is a moving roller under the airbag-type electric drive module 4, and the pneumatic control box/control system controls the movement of the lower moving roller by electrically connecting with the electric drive module 4 and steering. the

In one embodiment, the pneumatic control box/control system has the function of monitoring the pipeline pressure, has the ability to control and adjust the pressure of each gas pipeline, and has two control modes: panel control and/or handle control. the

In one embodiment, the air cushion module communicates with the air source through the pneumatic control box, and is installed on the bottom of the two-axis turntable by sliding. After the air source is supplied with air, a layer of air film is formed between the compressed air and the surface of the supporting ground. Hold up the two-axis turntable. the

Specifically, the four air cushion modules in the air cushion system of the present invention are installed on the bottom of the two-axis turntable in the form of sliding insertion, and the split design is convenient for the disassembly and maintenance of the air cushion modules; the electric drive module is installed on the bottom frame of the two-axis turntable , the integrated design of the air pipeline and the air pipeline of the air cushion module is integrated with the bottom of the two-axis turntable to avoid affecting the travel and steering of the two-axis turntable; the pneumatic control box and electric control panel are distributed on the side of the two-axis turntable, which is convenient for operation and setting; Real-time control of the two-axis turntable, the electric control system of the air cushion system is also equipped with a control handle. the

The air cushion system combines the characteristics of product assembly and testing. The distribution of air cushion modules takes into account the eccentric design of the center of mass of the two-axis turntable under no-load and full-load conditions to avoid instability during the inflation process; The drive module is designed with fast and slow walking and inching functions, taking into account the functions of transfer and precise docking; at the same time, the pneumatic control box, branch pipelines, and electric control panel are integrated in a separate design on the two-axis turntable, which avoids the need for two-axis turntables It interferes with the use process and is convenient for maintenance and replacement. the

Through the integrated design of the air cushion system at the bottom of the two-axis turntable, it can effectively solve the difficulties of small-scale steering, plane multi-degree-of-freedom translation and precise positioning in the narrow space of the two-axis turntable, and solve the difficult problem of assembly operation, so that the spacecraft can be successfully completed. Complicated final assembly and testing of multiple load compartments. the

Although the specific embodiments of the present invention have been described and illustrated in detail above, it should be pointed out that we can make various changes and modifications to the above embodiments, but these do not depart from the spirit of the present invention and the appended rights. Request the range described. the

Claims (6)

1. be applied to the lift system of the accurate location and installation of spacecraft, comprise a plurality of air cushion modules, pneumatic control case/control system (pneumatic control case and control system), tracheae reel, more than one gasbag-type electric drive module, a plurality of air cushion modules are symmetricly set on two-axle rotating table bottom, pneumatic control case/set-up of control system is in two-axle rotating table side, the tracheae reel of coiling tracheae is independently arranged on moving body, tracheae is connected separately with a plurality of air cushion modules and gasbag-type electric drive module respectively, pneumatic control case/control system regulates respectively and controls the air pressure of air bag in air cushion module and gasbag-type electric drive module, gasbag-type electric drive module below is provided with shifting roller, pneumatic control case/control system is controlled moving and turning to of its underpart shifting roller by being electrically connected to electric drive module.

2. lift system as claimed in claim 1, wherein, pneumatic control case/control system has that panel is controlled and/or handle is controlled two kinds of control modes.

3. lift system as claimed in claim 1, wherein, air cushion module is arranged on two-axle rotating table bottom by the cunning form of inserting.

4. lift system as claimed in claim 3, wherein, air cushion module is communicated with source of the gas by pneumatic control case/control system.

5. the lift system as described in claim 1-4 any one, wherein, air cushion module utilizes between compressed air and supporting floor surface and forms one deck air film after gas source feed, holds up according to this two-axle rotating table.

6. wherein, pneumatic control case/control system has loine pressure implementing monitoring function to lift system as claimed in claim 1, each air pipe is had to monomer and control pressure regulation ability.

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