CN115013432B - An on-orbit harmful gas removal unit storage device - Google Patents

Abstract

The invention discloses an on-orbit harmful gas removal unit storage device, which comprises a cabinet, wherein one end of the cabinet is opened, and the interior of the cabinet is provided with an accommodating space; the fixing frame is arranged in the accommodating space of the cabinet through the sliding rail unit; the harmful gas treatment unit is arranged on the fixing frame; and the sliding rail unit comprises an outer guide rail, an inner guide rail, a pressing plate, a locking unit, an adjusting unit and a swinging shaft, wherein the outer guide rail is connected with the cabinet, the inner guide rail is connected with the fixing frame, the outer guide rail comprises an outer guide rail body, and a first cavity is formed in the outer guide rail body. The invention has simple structure, no complex self-locking mechanism, reduced functional components such as springs, simplicity, easy use and high reliability.

Description

An on-orbit harmful gas removal unit storage device

technical field

The invention relates to the technical field of slide rail structures, and more specifically relates to an on-rail harmful gas removal unit storage device.

Background technique

The environmental control and life support system is an important subsystem of a manned spacecraft, which includes four environmental control and life support subsystems: carbon dioxide removal and trace harmful gas removal, urine treatment, water treatment, and electrolytic oxygen production, which together provide for the life and health of astronauts. provide important guarantees. Among them, the role of the trace harmful gas removal subsystem is to remove volatile organic compounds, acidic inorganic gases, ammonia and other gases in the track device. The system is composed of a large number of functional components and gas and liquid pipes and valves connecting the functional components. Failure of any one unit may lead to abnormal operation of the entire system, threatening the life safety of astronauts. At the same time, astronauts need to regularly check the operating status of the system and replace components that have expired. Due to the narrow installation space and operating space in the space station, how to realize the effective operation and maintenance of the harmful gas removal system through reasonable layout and installation has become a technical difficulty.

Because there are a large number of functional components in the trace harmful gas removal subsystem, these components are often installed in different workspaces. When the equipment is in normal operation, each component is fixedly connected to fixed supports such as cabinets and cabins. When the equipment fails, the astronauts need to locate the faulty component and perform maintenance and replacement operations. The narrow operating space has greatly hindered the detection and maintenance operations. Therefore, it is necessary to improve the component layout method to achieve normal working conditions and maintenance working conditions space transformation.

The slide rail is a linear motion device that realizes the rapid visualization of the internal space. It has a simple structure and is easy to operate, and is widely used in daily life and industrial production. The main defect of the existing slide rail is that when the slide rail is pushed back, the locked state cannot be maintained, and there is a great potential safety hazard when the equipment runs at high speed. In recent years, there have been many slide rail structures with self-locking functions for drawers, cabinets and other household items on the market, but most of them have complex structures and complex assembly, and rely on mechanisms to achieve passive self-locking, not active locking, and low reliability. , not applicable to aerospace equipment for maintenance needs.

The existing space station harmful gas removal subsystem installation and storage technology does not have good maintainability. Generally, all the functional components of the subsystem are installed on the fixed frame, and then the fixed frame is fixedly connected with the cabin section in the spacecraft, and the launch and in-orbit stages are a whole. When astronauts repair and replace the functional components in the subsystem, the operating space is narrow, the component levels are unclear, and the operation is difficult.

Contents of the invention

The object of the present invention is to provide an on-orbit harmful gas removal unit storage device to overcome the defects in the prior art.

In order to achieve the above object, the technical scheme adopted in the present invention is as follows:

An on-orbit harmful gas removal unit storage device, comprising:

A cabinet, one end of the cabinet is open, and the interior of the cabinet is an accommodation space;

a fixing frame, the fixing frame is arranged in the accommodation space of the cabinet through the slide rail unit;

A harmful gas processing unit, the harmful gas processing unit is arranged on the fixed frame;

And a slide rail unit, the slide rail unit includes an outer guide rail, an inner guide rail, a pressing plate, a locking unit, an adjustment unit and a swing shaft, the outer guide rail is connected with the cabinet, the inner guide rail is connected with the fixed frame, and the outer guide rail It includes the outer guide rail body, the outer guide rail body is provided with a first cavity, the front and rear upper end surfaces of the cavity are respectively provided with a first front pressing slope and a first rear pressing slope, and the inner guide rail is arranged on the In the first cavity, the inner guide rail includes an inner guide rail body, and the front and rear upper end surfaces of the inner guide rail body are respectively provided with a second front pressing slope and a second rear pressing slope, and the second front pressing slope It fits with the first front pressing inclined surface, and the second rear pressing inclined surface fits with the first rear pressing inclined surface. One end of the pressing plate is hinged to the outer guide rail through a swing shaft, and the other end of the pressing plate is connected to the The outer guide rail is detachably connected, the locking unit is hinged to the outer guide rail, the locking unit is used to lock and connect the pressure plate and the outer guide rail, the adjustment unit is arranged on the pressure plate, and the adjustment unit is used The adjusting unit adjusts the degree of locking between the inner guide rail and the outer guide rail after the locking unit is attached to the inner guide rail and moves telescopically along the sliding direction of the inner guide rail.

Further, the cabinet includes a cabinet body, the interior of the cabinet body is an accommodation space, the fixing frame is a U-shaped structure, the fixing frame is installed in the accommodation space, and the outer walls on both sides of the fixing frame pass through a plurality of sliding The rail unit is slidably connected to the inner wall of the accommodation space, and the harmful gas processing unit is installed on the inner wall of the fixing frame.

Further, the fixing bracket is a U-shaped structure composed of a first fixing bracket, a second fixing bracket and a third fixing bracket, the second fixing bracket is detachably connected to the inner inner wall of the accommodating space, and the first fixing bracket The frame and the third fixing frame are connected to the inner walls on both sides of the accommodation space, and the first fixing frame and the third fixing frame are provided with installation holes, and the sliding rail units are installed in the installation holes through bolts.

Further, the harmful gas processing unit includes a first harmful gas processing unit, a second harmful gas processing unit and a third harmful gas processing unit, the first harmful gas processing unit, the second harmful gas processing unit and the third harmful gas processing unit The gas processing units are installed on the first fixing frame, the second fixing frame and the third fixing frame respectively.

Further, the locking unit includes a locking rotating shaft, a locking screw and a locking nut. Both the locking rotating shaft and the locking screw are arranged in the movable groove of the locking shaft at one end of the outer rail body, and the locking rotating shaft passes through The locking shaft mounting hole is hinged with the outer rail body, the end of the locking screw is provided with a threaded hole, and the locking rotating shaft is spirally connected with the threaded hole at the end of the locking screw, and the locking rotating shaft and the locking screw form a T-shaped shaft, the T-shaped shaft is used to rotate around the outer guide rail body, the lock nut is connected with the lock screw rod, and the upper end of the pressure plate is provided with a lock unit installation hole for matching with the lock nut.

Further, the adjustment unit includes an adjustment shaft and an adjustment nut, one end of the adjustment shaft is a threaded hole and is threadedly connected with the adjustment nut, the other end of the adjustment shaft is an optical axis and the radius of the optical axis is greater than the radius of the thread, and one end of the optical axis is set at In the second cavity at one end of the inner guide rail and cooperate with the first mating surface and the second mating surface in the second cavity, the first mating surface is used to cooperate with one end of the optical axis to push the inner guide rail to move outward , the second mating surface is used to cooperate with one end of the optical axis to push the inner guide rail to move inward.

Further, the outer lower end of the inner guide rail is provided with a guide groove, and the outer guide rail is provided with a guide bar corresponding to the guide groove, and the slide groove includes a matching surface of the first inner guide rail and a matching surface of the second inner guide rail. The guide bar is provided with a first outer guide rail matching surface matched with the first inner guide rail matching surface, and a second outer guide rail matching surface matched with the second inner guide rail matching surface.

Further, a limiting device is also provided between the outer guide rail and the inner guide rail, the limiting device includes a limiting pin and a guide limiting groove, the limiting pin is arranged on the outer guiding rail, and the guiding limiting The positioning groove is arranged at the upper end of the inner guide rail, and the lower end of the limiting pin is matched with the guiding limiting groove.

Compared with the prior art, the present invention has the advantages of simple structure, no complex self-locking mechanism, less functional components such as springs, easy to use and high reliability; the present invention is easy to operate, and all components are Hinged or threaded connection, no need to separate, disassemble and install, only need to rotate the component to adjust the position, and rotate the nut to adjust the tightness to realize self-locking and unlocking; the invention can adjust the degree of locking, and there is no gap after locking, avoiding the gap between components Vibration damage to equipment.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a plan view of the storage device of the on-orbit harmful gas removal unit of the present invention.

Fig. 2 is an axial side view of the fixing bracket in the present invention.

(a), (b) and (c) in Fig. 3 are schematic diagrams of three different states of the storage device of the on-orbit harmful gas removal unit of the present invention.

Fig. 4 is a cross-sectional view of the plane structure of the self-locking wedge-shaped guide rail device in the present invention.

Fig. 5 is a schematic diagram of a partial three-dimensional structure of the self-locking wedge-shaped guide rail device in the present invention.

(a), (b) and (c) in Fig. 6 are respectively the top view, the front view and the left side view of the outer guide rail in the present invention.

(a) and (b) in Fig. 7 are a schematic three-dimensional structure diagram and a partially enlarged view of the inner guide rail in the present invention, respectively.

Fig. 8 is a schematic diagram of the three-dimensional structure of the middle platen of the present invention.

(a), (b) and (c) in Fig. 9 are schematic diagrams of the guide rails in the locked state, released state, and pulled out state of the present invention, respectively.

In the picture:

10. Cabinet;

11. Cabinet wall; 12. Accommodating space; 13. Mounting hole;

20. Fixed frame;

21. The first fixed frame; 22. The second fixed frame; 23. The third fixed frame; 24. Mounting holes;

30. Harmful gas processing unit;

31. The first harmful gas processing unit; 32. The second harmful gas processing unit; 33. The third harmful gas processing unit;

40. Slide rail unit

41. Outer guide rail;

410. Outer guide rail body; 411. First cavity; 4111. First front pressing slope; 4112. First rear pressing slope; 412. Locking shaft movable slot; 413. Cabinet installation hole; 414. Locking shaft Mounting hole; 415, first swing shaft mounting hole; 416, limit pin hole;

42. Inner guide rail;

420. Inner guide rail body; 421. Second cavity; 422. Guide limit groove; 423. Fixing frame mounting hole;

4201, the first inner guide rail matching surface; 4202, the second inner guide rail matching surface; 4203, the second front pressing inclined surface; 4204, the second rear pressing inclined surface; 4211, the first matching surface; 4212, the second matching surface;

43. Pressure plate;

431. Mounting hole for locking unit; 432. Mounting hole for adjusting unit; 433. Mounting hole for second swing shaft;

44. Locking unit;

441, lock the rotating shaft; 442, lock the screw rod; 443, lock the nut;

45. Adjustment unit;

451, adjusting shaft, 452, adjusting nut;

46. Swing shaft;

47, limit pin.

Detailed ways

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

Referring to Figures 1-8, this embodiment discloses an on-orbit harmful gas removal unit storage device, including:

A cabinet 10 , one end of the cabinet 10 is open, and the inside of the cabinet 10 is a receiving space 12 .

The fixing frame 20 is disposed in the accommodation space 12 of the cabinet 10 through the slide rail unit 40 , and the fixing frame 20 can be pushed in or drawn out from the cabinet 10 .

The harmful gas processing unit 30 is arranged on the fixed frame 20, and the harmful gas processing unit 30 is fixedly connected with the fixed frame 20 through screw connection.

And the slide rail unit 40, the slide rail unit 40 is arranged in the cabinet 10, the main body of the slide rail unit 40 is made up of the outer guide rail 41 and the inner guide rail 42, the inner guide rail 42 is fixedly connected with the fixed frame 20 by threaded connection, the outer guide rail 41 It is fixedly connected with the cabinet 10 through screw connection. Therefore, the fixing frame 20 can move inside and outside along the cabinet 10 .

In this embodiment, two sides of the cabinet 10 are provided with installation holes 13 , which can be bolted and fixed with the slide rail unit 40 .

As a preference, the cabinet 10 includes a cabinet body 11, the interior of the cabinet body 11 is an accommodating space 12, the fixing frame 20 is a U-shaped structure, the fixing frame 20 is arranged in the accommodating space 12, and the two sides of the fixing frame 20 The outer wall is slidingly connected to the inner wall of the accommodation space 12 through a plurality of slide rail units 40 , and the harmful gas processing unit 30 is installed on the inner wall of the fixing frame 20 .

In this embodiment, the fixing frame 20 is a U-shaped structure composed of a first fixing frame 21, a second fixing frame 22 and a third fixing frame 23, and the second fixing frame 22 is detachably connected to the inner wall of the accommodating space 12 (the fixed connection is fixed during the take-off stage of the spacecraft, and the fixed connection is canceled during the on-orbit stage, so as to twitch inside and outside through the slide rail). 21 and the third fixing bracket 23 are provided with installation holes 24, and the installation holes 24 are installed with slide rail units 40 through bolts.

As a preference, the first fixed frame 21 is connected to the left side plate of the cabinet 10 through two slide rail units 40, the second fixed frame 22 is connected to the right side plate of the cabinet 10 through two slide rail units 40, and the third fixed frame The frame 23 is perpendicular to the first fixing frame 21 and/or the second fixing frame 22, so that the three fixing frames together form a U-shaped structure.

In this embodiment, the harmful gas processing unit 30 includes a first harmful gas processing unit 31, a second harmful gas processing unit 32 and a third harmful gas processing unit 33, the first harmful gas processing unit 31, the second harmful gas processing unit The unit 32 and the third harmful gas processing unit 33 are respectively installed on the first fixing frame 21 , the second fixing frame 22 and the third fixing frame 23 through threaded holes.

Preferably, the distribution of the first harmful gas treatment unit 31 , the second harmful gas treatment unit 32 and the third harmful gas treatment unit 33 is graded according to the life cycle and vulnerability of functional components in the harmful gas treatment subsystem. Among them, the first harmful gas processing unit 31 and the second harmful gas processing unit 32 are near the outer side, and are equipped with components with a short life cycle and are easily damaged.

As a preference, the distribution of the first harmful gas processing unit 31 and the second harmful gas processing unit 32 is also graded according to the life cycle and the degree of damage. The shorter the life cycle and the easier the damage, the closer the component is installed to the cabinet. opening.

In this embodiment, the slide rail unit 40 includes an outer guide rail 41 , an inner guide rail 42 , a pressing plate 43 , a locking unit 44 , an adjustment unit 45 and a swing shaft 46 .

The outer guide rail 41 includes an outer guide rail body 410, the outer guide rail body 410 is provided with a first cavity 411, the front and rear ends of the cavity are provided with wedge-shaped surfaces, that is, the front and rear upper end surfaces of the cavity 411 are respectively provided with a first front pressing The slope 4111 and the first rear pressing slope 4112 , and the outer guide rail 41 is provided with a cabinet installation hole 413 to screw the outer guide rail 41 with the cabinet 10 .

The inner guide rail 42 is arranged in the first cavity 411, and its shape section is consistent with the first cavity 411 section of the outer guide rail 41. The inner guide rail 42 can slide in the outer guide rail 41, and the inner guide rail 42 is provided with a wedge-shaped surface before and after. The inner guide rail 42 includes an inner guide rail body 420, and the front and rear upper end surfaces of the inner guide rail body 420 are respectively provided with a second front pressing slope 4203 and a second rear pressing slope 4204. The two front pressing inclined surfaces 4203 are attached to the first front pressing inclined surface 4111 , and the second rear pressing inclined surface 4204 is attached to the first rear pressing inclined surface 4112 .

The middle part of the inner guide rail 42 is provided with a row of mounting holes 423 for fixing frames, which are threadedly connected with the mounting frames. One end of the inner guide rail 42 is provided with an adjustable second cavity 421 , and the adjustment unit 45 can be adjusted back and forth in the cavity to lock or unlock the connection between the inner guide rail 42 and the outer guide rail 41 .

The second swing shaft mounting hole 433 on one end of the pressing plate 43 is hinged to the first swing shaft mounting hole 415 on the outer guide rail 41 through the swing shaft 46 , and the other end of the pressing plate 43 is detachably connected to the outer guide rail 41 .

The locking unit 44 is hinged to the outer guide rail 41 , and the locking unit 44 is used to lock and connect the pressing plate 43 to the outer guide rail 41 .

The adjustment unit 45 is arranged on the pressure plate 43, and the adjustment unit 45 is used for telescopic movement along the sliding direction of the inner guide rail 42. After the locking unit 44 and the inner guide rail 42 are fitted together, the adjustment unit 45 adjusts the lock between the inner guide rail 42 and the outer guide rail 41. tightness.

In this embodiment, the locking unit 44 includes a locking rotating shaft 441, a locking screw 442 and a locking nut 443, and the locking rotating shaft 441 and the locking screw 442 are both arranged on the locking shaft at one end of the outer rail body 410 In the movable groove 412, the locking rotating shaft 441 is hinged with the outer rail body 410 through the locking shaft mounting hole 414, the end of the locking screw 442 has a threaded hole, and the locking rotating shaft 441 and the screw thread at the end of the locking screw 442 The holes are spirally connected, the locking rotating shaft 441 and the locking screw rod 442 form a T-shaped shaft, which is used to rotate around the outer rail body 410, the locking nut 443 is connected with the locking screw rod 442, and the upper end of the pressing plate 43 is provided with a The locking unit mounting hole 431 matched with the locking nut 443, the locking unit 44 can rotate around the outer guide rail 41, the locking unit mounting hole 431 is an opening, the locking unit 44 only needs to be unscrewed and rotated upwards, The pressing plate 43 can restore the degree of freedom of rotation around the outer guide rail 41 .

In this embodiment, the adjustment unit 45 includes an adjustment shaft 451 and an adjustment nut 452, which correspond to the adjustment unit installation hole 432 in the middle of the pressure plate 43. One end of the adjustment shaft 451 is a threaded hole and is threadedly connected with the adjustment nut 452. The adjustment shaft 451 is another One end is the optical axis and the radius of the optical axis is larger than the thread radius. One end of the optical axis is set in the second cavity 421 at one end of the inner guide rail 42 and is in contact with the first mating surface 4211 and the second mating surface 4212 in the second cavity 421. For cooperation, the first mating surface 4211 is used to cooperate with one end of the optical axis to push the inner guide rail 42 to move inward, and the second mating surface 4212 is used to cooperate with one end of the optical axis to push the inner guide rail 42 to move outward. The rotation of the adjustment nut 452 drives the adjustment shaft 451 to move back and forth, thereby driving the inner guide rail 42 to move back and forth, thereby compressing the wedge-shaped slope or releasing the compressed slope to realize self-locking and unlocking. Due to the self-locking feature of the threaded connection, the movement of the adjustment shaft 451 cannot drive the adjustment nut 452 to rotate, so the adjustment unit 45 is a one-way self-locking unit.

Preferably, the locking nut 443 and the adjusting nut 452 are wing nuts, which are easy to operate and can be tightened without tools.

In this embodiment, the outer lower end of the inner guide rail 42 is provided with a guide groove, the outer guide rail 41 is provided with a guide bar corresponding to the guide groove, and the slide groove includes a first inner guide rail matching surface 4201 and a second inner guide rail matching surface 4202, The guide bar is provided with a first outer guide rail matching surface matched with the first inner guide rail matching surface 4201 , and a second outer guide rail matching surface matched with the second inner guide rail matching surface 4202 .

In this embodiment, a limiting device is also provided between the outer guide rail 41 and the inner guide rail 42. The limiting device includes a limiting pin 47 and a guiding and limiting groove 422 for guiding and limiting. The limiting pin 47 is located at On the outer guide rail 41, the guide limit groove 422 is arranged on the upper end of the inner guide rail 42, and the lower end of the limit pin 47 cooperates with the guide limit groove 422, and the slide rail can be pulled out through the guide limit groove 422 and the limit pin 47. limit.

Figure 9 is a schematic diagram of the position of each component in three working states, where (a) is a fully locked state, and the locking steps are: push the inner guide rail 42 to the bottom; turn the pressure plate 430 up, so that the locking unit installation hole 431 faces upward At the same time, the adjustment unit 45 is entered into the second cavity 421 of the inner guide rail 42; the locking unit 44 is rotated down and transferred to the locking unit installation hole 431 of the pressure plate 3, the locking nut 443 is locked, and the outer guide rail 41, The pressing plate 43 and the locking unit 44 form a fixed connection. At this time, the inner guide rail 42 has a small amount of space for moving back and forth; rotate the adjustment nut 452 to make the adjustment shaft 451 move backward until it contacts the first mating surface 4211, and continue to push the inner guide rail 42 moves backward, and the front and rear pressing slopes of the inner guide rail 42 and the outer guide rail 41 are compressed to form self-locking.

(b) in Figure 9 is the unlocked state, the steps are: rotate the adjusting nut 452 in the opposite direction, so that the adjusting shaft 451 moves forward, the pressing slope between the inner guide rail 42 and the outer guide rail 41 is released, and the adjusting shaft 451 moves forward , disengaged from the first mating surface 4211; the adjustment shaft continues to move forward, and contacts the second mating surface 4212, driving the inner rail 42 to move backward, and the inner rail 42 is completely separated from the outer rail 41; loosen the lock nut 443, release The locking of the pressing plate 43 ; the locking unit 44 is rotated out as a whole; the pressing plate 43 and the adjusting unit 45 are rotated out as a whole, and the contact with the inner guide rail 42 is released. (c) in Fig. 9 is the working state after unlocking, at this moment, the inner guide rail can move freely in the outer guide rail.

The invention has simple structure, no complex self-locking mechanism, less functional components such as springs, and is easy to use and has high reliability.

The invention is easy to operate, and all components are hinged or threaded, without separation, disassembly and installation, and self-locking and unlocking can be realized only by rotating the components to adjust the position and rotating the nut to adjust the tightness.

The invention can adjust the degree of locking, and there is no gap after locking, which avoids damage to equipment caused by vibration between components.

The present invention is aimed at the high-speed operation equipments such as aerospace and aerospace that have maintenance needs, and the frequency of use is not high, but high reliability is required. The present invention realizes switching between normal operation and maintenance state of the equipment through a simple mechanical structure, ensures that the machine is completely locked when the machine is in normal operation, and has high reliability.

Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, the patent owner can make various deformations or modifications within the scope of the appended claims, as long as they do not exceed the scope of protection described in the claims of the present invention, all should Within the protection scope of the present invention.

Claims (8)

1. An on-orbit harmful gas removal unit storage device, characterized in that it comprises: A cabinet, one end of the cabinet is open, and the interior of the cabinet is an accommodation space; a fixing frame, the fixing frame is arranged in the accommodation space of the cabinet through the slide rail unit; A harmful gas processing unit, the harmful gas processing unit is arranged on the fixed frame; And a slide rail unit, the slide rail unit includes an outer guide rail, an inner guide rail, a pressing plate, a locking unit, an adjustment unit and a swing shaft, the outer guide rail is connected with the cabinet, the inner guide rail is connected with the fixed frame, and the outer guide rail It includes the outer guide rail body, the outer guide rail body is provided with a first cavity, the front and rear upper end surfaces of the cavity are respectively provided with a first front pressing slope and a first rear pressing slope, and the inner guide rail is arranged on the In the first cavity, the inner guide rail includes an inner guide rail body, and the front and rear upper end surfaces of the inner guide rail body are respectively provided with a second front pressing slope and a second rear pressing slope, and the second front pressing slope It fits with the first front pressing inclined surface, and the second rear pressing inclined surface fits with the first rear pressing inclined surface. One end of the pressing plate is hinged to the outer guide rail through a swing shaft, and the other end of the pressing plate is connected to the The outer guide rail is detachably connected, the locking unit is hinged to the outer guide rail, the locking unit is used to lock and connect the pressure plate and the outer guide rail, the adjustment unit is arranged on the pressure plate, and the adjustment unit is used After telescopic movement along the sliding direction of the inner guide rail, the adjusting unit adjusts the degree of locking between the inner guide rail and the outer guide rail after the locking unit is attached to the inner guide rail. 2. The on-orbit harmful gas removal unit storage device according to claim 1, wherein the cabinet includes a cabinet body, the interior of the cabinet body is a storage space, the fixing frame is a U-shaped structure, and the The fixed frame is installed in the accommodation space, and the outer walls on both sides of the fixed frame are slidingly connected with the inner wall of the accommodation space through a plurality of slide rail units, and the harmful gas processing unit is installed on the inner wall of the fixed frame. 3. The on-orbit harmful gas removal unit storage device according to claim 1, wherein the fixed frame is a U-shaped structure composed of a first fixed frame, a second fixed frame and a third fixed frame, and the first fixed frame The two fixing frames are detachably connected to the inner inner wall of the accommodation space, the first fixing frame and the third fixing frame are connected to the inner walls on both sides of the accommodation space, and the first fixing frame and the third fixing frame are equipped with installation holes, the mounting holes are fitted with slide rail units through bolts. 4. The on-orbit harmful gas removal unit storage device according to claim 3, wherein the harmful gas processing unit comprises a first harmful gas processing unit, a second harmful gas processing unit and a third harmful gas processing unit, The first harmful gas processing unit, the second harmful gas processing unit and the third harmful gas processing unit are installed on the first fixing frame, the second fixing frame and the third fixing frame respectively. 5. The on-orbit harmful gas removal unit storage device according to claim 1, wherein the locking unit includes a locking rotating shaft, a locking screw and a locking nut, and the locking rotating shaft and the locking screw are both Set in the movable groove of the locking shaft at one end of the outer rail body, the locking rotating shaft is hinged to the outer rail body through the locking shaft mounting hole, the end of the locking screw has a threaded hole, and the locking rotating shaft and the locking screw end The threaded hole of the part is screw connected, the locking rotating shaft and the locking screw rod form a T-shaped shaft, and the T-shaped shaft is used to rotate around the outer guide rail body, the locking nut is connected with the locking screw rod, and the locking screw rod of the pressing plate The upper end is provided with a lock unit installation hole for matching with the lock nut. 6. The on-orbit harmful gas removal unit storage device according to claim 1, wherein the adjustment unit includes an adjustment shaft and an adjustment nut, one end of the adjustment shaft is threaded and is threadedly connected with the adjustment nut, and the adjustment shaft is another One end is an optical axis and the radius of the optical axis is greater than the radius of the thread. One end of the optical axis is arranged in the second cavity at one end of the inner guide rail and cooperates with the first mating surface and the second mating surface in the second cavity. The first The mating surface is used to cooperate with one end of the optical axis to push the inner guide rail to move outward, and the second mating surface is used to cooperate with one end of the optical shaft to push the inner guide rail to move inward. 7. The on-rail harmful gas removal unit storage device according to claim 1, wherein the outer lower end of the inner rail is provided with a guide groove, and the outer guide rail is provided with a guide bar corresponding to the guide groove, and the outer guide rail is provided with a guide bar corresponding to the guide groove. The guide groove includes a first inner guide rail matching surface and a second inner guide rail matching surface, and the guide bar is provided with a first outer guide rail matching surface matched with the first inner guide rail matching surface, and a first outer guide rail matching surface matched with the second inner guide rail matching surface. Second outer rail mating surface. 8. The on-orbit harmful gas removal unit storage device according to claim 1, characterized in that, a limit device is also provided between the outer guide rail and the inner guide rail, and the limit device includes a limit pin and a guide limit The limit pin is arranged on the outer guide rail, the guide limit groove is arranged on the upper end of the inner guide rail, and the lower end of the limit pin is matched with the guide limit groove.