CN104535100B - A kind of in-orbit tripper of space optical remote sensor erection support - Google Patents

Abstract

The invention relates to an on-rail unlocking device for a mounting support of a space optical remote sensor, which belongs to the field of space optics technology, and solves the problem of high processing, assembly and adjustment requirements, high precision requirements, long development cycle, high cost, large impulse and heavy weight in the prior art. 1. It takes up a lot of space, easily produces pollutants, and has potential safety hazards; the device includes the lower body of the mounting support used to connect with the satellite, the limit half-circle connected with the lower body of the mounting support, and the space optical remote sensor. The upper body of the installation support, the tension spring connected with the lower body of the installation support and the upper body of the installation support, the heat insulation pad contacted with the upper body of the installation support, and the telescopic ring for pressing the heat insulation pad. There are 2 limit semi-circular rings in total, which are connected to the lower body of the mounting support by means of hexagon socket screws. There are 8 pieces of heat insulation pads in total, which have telescopic function, and are sandwiched between the two telescopic rings and the upper body of the mounting support. The telescopic rings are made of memory alloy. Material, the non-contact surface of the telescopic ring has a heating plate, when heated, the telescopic ring shrinks.

Description

An on-orbit unlocking device for a space optical remote sensor installation support

technical field

The invention belongs to the technical field of space optics, and in particular relates to an on-rail unlocking device for a mounting support of a space optic remote sensor.

Background technique

As a high-precision spaceborne optical device, the space optical remote sensor is particularly sensitive to stress, and the ground installation and launch environment will inevitably introduce some stress, especially during the installation process of the space optical remote sensor and satellite, the introduction of assembly stress is the largest, so the design It is imperative to have a set of mounting support on-rail unlocking device. At present, the on-orbit unlocking device of space optical remote sensor mainly adopts pyrotechnic detonation method, which has the following disadvantages:

1) High requirements for processing and assembly, high precision requirements, and long development cycle. The structure of the pyrotechnic detonation device is relatively complicated. In order to successfully disengage after detonation, the structural precision of the separation surface is high, and the dimensional tolerance and assembly clearance are strict, so the development cycle is relatively long.

2) The cost is high. The cost of pyrotechnics itself is high, the processing and adjustment requirements of supporting equipment are high, and the transfer and storage environment are demanding, so the cost is the biggest bottleneck restricting its development.

3) The momentum is large. The detonation time of pyrotechnic products is short, the energy is concentrated in an instant, and the impulse generated is large, which may cause the whole star to vibrate.

4) It is heavy and takes up a lot of space. The weight and volume of the detonating unlocking device itself are very large, and a sufficiently long detonating cable and recovery device are required, so the total weight is more than twice the weight of the pure support, and the cable is thick and hard, taking up as much space as you can imagine And know.

5) It is easy to produce pollutants and has potential safety hazards. The pyrotechnic device used in the detonation unlocking device produces a lot of smoke and dust. If it is not properly protected, it may cause mirror pollution. Moreover, the pyrotechnic device is flammable and explosive, and there is a great safety hazard in itself.

Contents of the invention

The purpose of the present invention is to provide an on-rail unlocking device for space optical remote sensor installation support, which solves the problem of prior art processing, high requirements for assembly and adjustment, high precision requirements, long development cycle, high cost, large impulse, large weight, and space occupation. Large, easy to produce pollutants, there are safety hazards.

An on-rail unlocking device for a mounting support of a space optical remote sensor according to the present invention comprises a lower body of the mounting support, a tension spring, a half-circle for limiting, an upper body of the mounting support, a telescopic ring, a heat insulation pad and a heating sheet; the mounting support The lower body is covered on the upper body of the mounting support, the tension spring is between the upper body of the support and the lower body of the mounting support, one end of the tension spring is hooked on the upper body of the mounting support, and the other end is hooked on the lower body of the mounting support, The lower body of the mounting support is connected to the satellite, the upper body of the mounting support is connected to the space optical remote sensor, and the two limit half rings are fixedly connected to the lower body of the mounting support through hexagon socket screws respectively; the upper body of the mounting support is provided with heat insulation The heat insulation pad is pasted in the heat insulation groove, the telescopic ring is set outside the heat insulation pad, and on the heat insulation groove, a heating sheet is arranged on the non-contact plane of the two telescopic rings.

The lower body of the installation support is provided with a long groove under the spring, and a spring through hole is respectively arranged on both sides of the long groove under the spring.

A long groove on the spring is provided at the center of the upper end surface of the upper body of the mounting support, and a spring light hole is respectively arranged on both sides of the long groove on the spring, and 4 light holes for screws are evenly distributed around the middle position of the upper end surface , 4 installation holes are evenly distributed on the outer circumference of the upper end surface, the lower end of the upper body of the installation support is a cylinder, the cylinder is divided into four petals by four long grooves, two circles of limit grooves are distributed on the cylinder, and there are also There are 8 through-holes distributed.

The working principle of the present invention: before the space optical remote sensor enters the orbit, since the telescopic ring is fixedly connected with the lower body of the mounting support through screws, the telescopic ring of the upper body of the mounting support and the lower body of the mounting support are in an over-win fit, and the upper body of the mounting support It is integrated with the lower body of the installation support; when the space optical remote sensor enters the orbit, the two non-contact heating plates of the telescopic ring are heated, and the telescopic ring shrinks due to the memory function of the telescopic ring material, so that the inner wall of the telescopic ring is pressed tightly on the installation surface. The upper body of the support, the outer wall of the telescopic ring is separated from the lower body of the installation support, and then the upper body of the installation support is separated from the lower body of the installation support to realize unlocking; the distance between the upper body of the installation support and the lower body of the installation support depends on the natural tension of the tension spring The length is maintained; if the tension spring fails, the limit semi-circle is the second insurance, so as to ensure that the installation support is completely unlocked, the stress is released to the maximum, and the position range of the space optical remote sensor is controllable. In order to prevent the space optical remote sensor from introducing heat, heat insulating pads are evenly distributed on the contact surface between the upper body of the installation support and the telescopic ring.

Beneficial technical effects of the present invention: the telescopic ring of the present invention is a memory alloy ring structure, which reduces the difficulty of processing and assembling the unlocking device, reduces the weight and space of the device, eliminates the risk of large unlocking impulse, and saves cost and development period, and the on-rail unlocking device has simple structure, strong operability, convenient and safe implementation.

Description of drawings

Fig. 1 is a front sectional view of a space optical remote sensor mounting support in a locked state of a rail unlocking device according to the present invention;

Fig. 2 is a top view of Fig. 1 in the rail unlocking device of a space optical remote sensor mounting support according to the present invention;

Fig. 3 is a front sectional view of a space optical remote sensor mounting support in an unlocked state of an on-rail unlocking device according to the present invention;

Fig. 4 is a three-dimensional view of the upper body structure of a space optical remote sensor mounting support in a rail unlocking device according to the present invention;

Among them: 1. The lower body of the installation support, 2. Tension spring, 3. The limit semicircle, 4. The upper body of the installation support, 4001, the long groove, 4002, the limit groove, 4003, the wire hole, 5, Telescopic ring, 6, insulation pad, 7, hexagon socket head screw.

detailed description

The present invention will be further elaborated below in conjunction with the accompanying drawings.

Referring to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4, a space optical remote sensor mounting support on-rail unlocking device of the present invention comprises mounting support lower body 1, tension spring 2, mounting support upper body 4 , telescopic ring 5, heat insulation pad 6 and heating sheet; the lower body 1 of the mounting support is set on the upper body 4 of the mounting support, the tension spring 2 is between the upper body of the support and the lower body 1 of the mounting support, and the tension spring 2 One end of the hook is hooked on the upper body 4 of the installation support, and the other end is hooked on the lower body of the installation support. The lower body 1 of the installation support is connected with the satellite, and the upper body 4 of the installation support is connected with the space optical remote sensor; the upper body 4 of the installation support There are two heat insulation grooves on the top, and the heat insulation pad 6 is pasted in the heat insulation groove. The two telescopic rings 5 are respectively set outside the two circles of heat insulation pads 6. There is a heating pad on the non-contact plane of the two telescopic rings 5. piece.

The lower body 1 of the mounting support is provided with a long groove under the spring, and a lower spring through hole is respectively arranged on both sides of the long groove under the spring.

The center position of the upper end surface of the upper body 4 of the mounting support is provided with a long groove on the spring, and an upper spring light hole is respectively arranged on both sides of the long groove on the spring, and 4 screws are evenly distributed on the middle position of the upper end surface. Light hole, 4 mounting holes evenly distributed on the outer circumference of the upper end surface, the lower end of the upper body 4 of the mounting support is a cylinder, the cylinder is divided into four petals by four long grooves 4001, and two circles of limit grooves 4002 are distributed on the cylinder , there are also 8 through-wire holes 4003 distributed on the cylinder, and the 8 through-wire holes 4003 are used for wiring of the heating sheet.

The present invention also includes a limiting semi-circular ring 3, and two limiting semi-circular rings 3 are respectively fixedly connected to the lower body 1 of the mounting support through a hexagon socket head cap screw 7.

The assembly process of the present invention is as follows: one side of 8 pieces of heat insulation pad 6 is coated with heat insulation grease, and the greased side of 8 pieces of heat insulation pad 6 is pasted in the 8 limit grooves of the upper body 4 of the mounting support; 2 pieces The telescopic ring 5 is respectively set in the limit groove of the upper body 4 of the mounting support; the tension spring 2 is placed between the lower body 1 of the mounting support and the upper body 4 of the mounting support, and the upper spring groove at the top of the upper body 4 of the mounting support The direction of the long groove under the spring at the bottom of the lower body 1 of the mounting support is in the same direction, so that the pull hooks at both ends of the tension spring 2 pass through the long groove smoothly, and the stretch spring 2 is stretched until all the pull hooks are exposed from the top surface of the upper body 4 of the mounting support and the mounting support On the bottom end surface of the lower body 1, the tension spring 2 is rotated 90 degrees up and down synchronously, and hung in the spring light hole of the upper body 4 of the installation support and the lower body 1 of the installation support; through the upper body 4 of the installation support and the lower body 1 of the installation support Put the two limiting semi-circular rings 3 in the appropriate position, pass through the screw holes on the top of the upper body 4 of the mounting support, and connect the two limiting semi-circular rings 3 to the mounting support with 4 hexagon socket head screws 7 The lower body 1 is fixed.

When the space optical remote sensor is put into orbit and needs to be unlocked to eliminate the assembly stress, heat the heating plates on the non-contact surface of the two telescopic rings 5. Due to the memory function of the telescopic ring 5 material, the telescopic ring 5 shrinks, making the telescopic ring 5 The inner wall is pressed against the upper body 4 of the installation support, so that the outer wall of the telescopic ring 5 is separated from the lower body 1 of the installation support, and then the lower body 1 of the installation support is separated from the upper body 4 of the installation support. Length maintained.

The setting of the limiting semi-circular ring 3 prevents the spring from failing. Since the outer diameter of the telescopic ring 5 is greater than the inner diameter of the semi-circular ring after contraction, the upper body 4 of the mounting bracket will not slide out from the lower body 1 of the mounting bracket, thereby ensuring The mounting bracket is fully unlocked for maximum stress relief.

In order to improve the stability of the space optical remote sensor, multiple sets of on-orbit unlocking devices of the present invention can be used.

Claims (3)

1. An on-rail unlocking device for a space optical remote sensor mounting support, characterized in that it comprises a lower body of the mounting support (1), a tension spring (2), a limiting half-circle (3), and an upper body of the mounting support (4), telescopic ring (5), heat insulation pad (6) and heating sheet; the lower body of the mounting support (1) is set on the upper body of the mounting support (4), and the tension spring (2) is placed on the upper body of the support Between the installation support lower body (1), one end of the tension spring (2) is hooked on the installation support upper body (4), the other end is hooked on the installation support lower body (1), and the installation support lower body (1 ) is connected with the satellite, the upper body (4) of the installation support is connected with the space optical remote sensor, and the two limit semi-circular rings (3) are fixedly connected with the lower body (1) of the installation support through hexagon socket head screws (7) respectively; The upper body (4) of the support is provided with two heat insulation grooves, the heat insulation pad (6) is pasted in the heat insulation groove, and the two telescopic rings (5) are respectively set on the heat insulation pads (6) of the two heat insulation grooves. ) outside, the non-contact plane of 2 telescopic rings (5) is provided with heating plate. 2. The on-rail unlocking device of a space optical remote sensor mounting support according to claim 1, characterized in that, the lower body (1) of the mounting support is provided with a long groove under the spring, and two long grooves under the spring are provided. Each side is provided with a lower spring through hole. 3. The on-rail unlocking device for a space optical remote sensor mounting base according to claim 1, characterized in that, a long slot on the spring is provided at the center of the upper end surface of the upper body (4) of the mounting base , one upper spring light hole is set on both sides of the long groove on the spring, 4 screw light holes are evenly distributed on the middle position of the upper end surface, and 4 installation holes are evenly distributed on the outer circumference of the upper end surface, the upper body of the mounting support (4) The lower end is a cylinder, the cylinder is divided into four petals by four long slots (4001), two circles of limit slots (4002) are distributed on the cylinder, and 8 wire holes (4003) are also distributed on the cylinder .