Foldable climbing device capable of being automatically unfolded

Abstract

The invention relates to a foldable climbing device capable of being automatically unfolded, and belongs to the technical field of spaceflight. The climbing device comprises a climbing structure, a left unfolding driving assembly, a right unfolding driving assembly and a flexible lap joint assembly. The climbing device has a treading function, a climbing function and an up-and-down channel space for astronauts to go out of the cabin. Compared with a traditional escalator, the climbing device has a folded state and an unfolded state and can adapt to various landing working conditions. A stable configuration is achieved in the folded state for resisting impact and vibration environments. The climbing structure is achieved in the unfolded state, and the climbing and treading requirements of workers during access in the unknown landing environment are met.

Description

Technical Field

[0001] This invention relates to a foldable, automatically deployable climbing device that provides an up-and-down passage for astronauts to exit the spacecraft, offering climbing and stepping functions, and belongs to the field of aerospace technology. Background Technology

[0002] The foldable, automatically deployable climbing device is a climbing device suitable for installation outside the cabin, providing astronauts with both stepping and climbing functions for extravehicular activity, and providing access for astronauts to and from the cabin.

[0003] Traditional escalators are characterized by only providing up and down climbing functions. Some escalators have folding and storage functions, but they generally cannot automatically unfold or adapt to different terrains and unfolding postures. However, for astronauts landing on the surface of a star, it is necessary to consider the ability to unfold and climb under different terrains and landing postures, and to have climbing devices that can resist impact and vibration environments. Summary of the Invention

[0004] The technical problem solved by this invention is to overcome the shortcomings of the prior art and provide a foldable and automatically deployable climbing device that can adapt to various landing conditions, addressing the climbing and stepping needs of personnel entering and exiting unknown landing environments. In the folding function, the climbing device is in a folded and locked state to resist impact and vibration; in the automatic deployment function, the climbing device automatically adapts to the landing conditions and unfolds, providing personnel with access for ascent and descent, as well as climbing and stepping functions.

[0005] The technical solution of this invention is:

[0006] A foldable, automatically deployable climbing device includes: a climbing structure, a left deployment drive assembly, a right deployment drive assembly, and a flexible overlapping assembly;

[0007] The upper end of the climbing structure is fixedly connected to the bulkhead. The left and right deployment drive components, which are identical in structure, are fixed to the left and right sides of the upper end of the climbing structure, respectively. After the climbing structure is connected to the left and right deployment drive components, the axes of the left and right deployment drive components are collinear and perpendicular to the deployment direction of the climbing structure. The climbing structure rotates around the axes of the left and right deployment drive components to adapt to different terrains and deployment postures. The flexible overlapping component is installed on the climbing structure to cushion and wrap the overlapping surface during deployment.

[0008] Furthermore, the left unfolding drive assembly includes a left rotating shaft bracket, a rotating shaft mounting base, a rotating shaft, a rotating shaft steel pad, a left drive torsion spring, a left fixed shaft, a fixed shaft end cap, and a torsion spring sleeve;

[0009] The left pivot bracket is connected to the bulkhead by screws; the lower end of the left pivot bracket is slotted to form two parallel support arms, and the two parallel support arms are provided with the same cylindrical inner hole along the axis. One end of the left fixed shaft passes through the cylindrical inner hole. A rotating shaft is provided between the left fixed shaft and one end of the pivot mounting base. Rotating shaft steel pads are provided between the two end faces of the rotating shaft and the two parallel support arms at the lower end of the left pivot bracket; the other end of the pivot mounting base is connected to the climbing structure.

[0010] The fixed shaft end cap is connected to the left rotating shaft bracket by screws. The fixed shaft end cap has a special-shaped hole, and the end of the left fixed shaft has a special-shaped shaft. The special-shaped hole of the fixed shaft end cap and the special-shaped shaft of the left fixed shaft cooperate to prevent the left fixed shaft from rotating.

[0011] A left drive torsion spring is fitted onto the other end of the left fixed shaft. The shaft end of the left fixed shaft is provided with a mounting groove that cooperates with the fixed end of the left drive torsion spring. The rotating end of the left drive torsion spring is installed in conjunction with the spring mounting hole of the rotating shaft mounting seat. The rotating shaft mounting seat is driven to rotate by the left drive torsion spring, thereby driving the climbing structure connected to the rotating shaft mounting seat to unfold. The torsion sleeve is connected to the threaded hole at the shaft end of the left fixed shaft as a whole by screws, and the left drive torsion spring is fitted into it.

[0012] The external thread of the locking screw of the fixed shaft is connected and fixed to the threaded hole of the left fixed shaft, thereby constraining the left fixed shaft to move axially.

[0013] Furthermore, the outer surface of the rotating shaft is an irregularly shaped shaft, which matches the irregularly shaped inner hole of the rotating shaft mounting base; the inner ring of the rotating shaft steel pad is also irregularly shaped, which matches the irregularly shaped shaft on the outer surface of the rotating shaft.

[0014] Furthermore, the left rotating shaft bracket and the left fixed shaft remain stationary, while the rotating shaft mounting seat rotates, causing the rotating shaft to rotate, which in turn causes the rotating shaft steel pad to rotate.

[0015] Furthermore, the rotating shaft steel pad axially limits the rotating shaft mounting seat between the two parallel arms at the lower end of the left rotating shaft bracket.

[0016] Furthermore, dust collection grooves are designed on the left fixed shaft, rotating shaft, and rotating shaft steel pad to prevent jamming caused by dust or dirt.

[0017] Furthermore, the rotation joint of the left deployment drive assembly is lubricated using a solid lubrication method; the rotation joint refers to the joint between the rotation shaft and the left fixed shaft, between the end of the rotation shaft and the two parallel supports at the lower end of the left rotation shaft bracket, and between the rotation shaft steel pad and the two parallel supports at the lower end of the left rotation shaft bracket; the rotation joint of the right deployment drive assembly is related to the left deployment drive assembly.

[0018] Perform the same solid lubrication.

[0019] Furthermore, the climbing structure adopts a ladder structure.

[0020] Furthermore, the flexible overlap assembly includes a buffer rope mounting base, a buffer rope assembly, a buffer rope locking screw, and a buffer rope adjusting shim.

[0021] The buffer rope mounting base is welded to the climbing structure as a whole. The buffer rope assembly is installed between the two buffer rope mounting bases and is installed in conjunction with the through holes at the ends of the buffer rope mounting bases. The buffer rope adjusting shim is located between the buffer rope assembly and the buffer rope mounting base. The different preload requirements of the buffer rope assembly can be achieved by adjusting the thickness of the buffer rope shim. The buffer rope assembly is connected to the buffer rope mounting base as a whole by the buffer rope locking screw.

[0022] Furthermore, the buffer rope assembly includes a wire rope, a wire rope crimping joint, a wire rope mounting base, and a wire rope sleeve;

[0023] After the wire rope is inserted into the wire rope mounting base, it is crimped with the wire rope crimping joint; the wire rope sleeve is a semi-cylindrical sleeve, and two wire rope sleeves are installed in each wire rope mounting base, located between the wire rope mounting base and the wire rope crimping joint. The outer cylindrical surface formed by the two wire rope sleeves is fitted with the inner cylindrical surface of the wire rope mounting base for installation.

[0024] The outer cylindrical surface of the wire rope mounting base is fitted with the through hole at the end of the buffer rope mounting base. When adjusting the wire rope preload, the buffer rope adjusting shim is inserted into the wire rope mounting base.

[0025] The advantages of this invention compared to the prior art are:

[0026] (1) The difference between this invention and the traditional escalator is that the traditional escalator only provides the function of climbing up and down, and some escalators have the function of folding and storing. They generally cannot be automatically unfolded and can automatically adapt to different terrains and unfolding postures. The foldable automatic unfolding climbing device proposed in this invention can realize the folding function to resist impact and vibration environment, and can realize the unfolding and climbing functions under different terrains and different landing postures.

[0027] (2) The present invention takes into account both the shrinkage and envelopment requirements and the climbing function requirements in the working state; it has the function of buffering and wrapping the overlapping surface, and can provide the requirements of sufficient overlap of the buffering and climbing device under different working conditions.

[0028] (3) The present invention has automatic deployment and follow-up adjustment functions, which can adapt to the needs of various deployment conditions for climbing channel deployment and climbing. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a foldable, automatically unfolding climbing device.

[0030] Figure 2 This is a schematic diagram of the left-hand drive unfolding component;

[0031] Figure 3 This is a schematic diagram of the right drive expansion component;

[0032] Figure 4 This is a schematic diagram of the climbing structure.

[0033] Figure 5 This is a schematic diagram of the flexible overlapping components;

[0034] Figure 6 This is a schematic diagram of the buffer rope assembly. Detailed Implementation

[0035] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings.

[0036] like Figure 1 As shown, the present invention proposes a foldable automatic unfolding climbing device, which is referred to as a climbing device, including a climbing structure 1, a left unfolding drive component 2, a right unfolding drive component 3, and a flexible overlapping component 12.

[0037] The upper end of the climbing structure 1 is fixedly connected to the bulkhead. The left and right deployment drive components 2 and 3, which are identical in structure, are fixed to the left and right sides of the upper end of the climbing structure 1, respectively. After the climbing structure 1 is connected to the left and right deployment drive components 2 and 3, the axes of the left and right deployment drive components 2 and 3 are collinear and perpendicular to the deployment direction of the climbing structure 1. The climbing structure 1 rotates around the axes of the left and right deployment drive components 2 to adapt to different terrains and deployment postures. The flexible overlapping component 12 is installed on the climbing structure 1 and is used to buffer and wrap the overlapping surface during deployment.

[0038] like Figure 2 As shown, the left unfolding drive assembly 2 includes a left rotating shaft bracket 21, a rotating shaft mounting base 22, a rotating shaft 23, a rotating shaft steel pad 24, a left drive torsion spring 25, a left fixed shaft 26, a fixed shaft end cap 27, and a torsion spring sleeve 28;

[0039] The left pivot bracket 21 is connected to the bulkhead by screws; the lower end of the left pivot bracket 21 is slotted to form two parallel arms, and the two parallel arms are provided with the same cylindrical inner hole along the axis. One end of the left fixed shaft 26 passes through the cylindrical inner hole. A rotating shaft 23 is provided between the left fixed shaft 26 and one end of the pivot mounting base 22. A rotating shaft steel pad 24 is provided between the two end faces of the rotating shaft 23 and the two parallel arms at the lower end of the left pivot bracket 21; the other end of the pivot mounting base 22 is connected to the climbing structure 1.

[0040] The fixed shaft end cap 27 is connected to the left rotating shaft bracket 21 by screws. The fixed shaft end cap 27 is provided with a special-shaped hole, and the end of the left fixed shaft 26 is provided with a special-shaped shaft. The special-shaped hole of the fixed shaft end cap 27 cooperates with the special-shaped shaft of the left fixed shaft 26 to prevent the left fixed shaft 26 from rotating.

[0041] A left drive torsion spring 25 is fitted onto the other end of the left fixed shaft 26. The shaft end of the left fixed shaft 26 is provided with a mounting groove that cooperates with the fixed end of the left drive torsion spring 25. The rotating end of the left drive torsion spring 25 is installed in conjunction with the spring mounting hole of the rotating shaft mounting seat 22. The left drive torsion spring 25 drives the rotating shaft mounting seat 22 to rotate, thereby driving the climbing structure 1 connected to the rotating shaft mounting seat 22 to unfold. The torsion sleeve 28 is connected to the threaded hole at the shaft end of the left fixed shaft 26 by screws, and the left drive torsion spring 25 is fitted into it.

[0042] The external thread of the fixed shaft locking screw 29 is connected and fixed to the threaded hole of the left fixed shaft 26, thereby constraining the left fixed shaft 26 to move axially.

[0043] The outer surface of the rotating shaft 23 is an irregularly shaped shaft, which matches the irregularly shaped inner hole of the rotating shaft mounting base 22; the inner ring of the rotating shaft steel pad 24 is also irregularly shaped, matching the irregularly shaped shaft on the outer surface of the rotating shaft 23. During rotation, the left rotating shaft bracket 21 and the left fixed shaft 26 remain stationary, while the rotating shaft mounting base 22 rotates, causing the rotating shaft 23 to rotate, which in turn causes the rotating shaft steel pad 24 to rotate.

[0044] The rotating shaft steel pad 24 axially limits the rotating shaft mounting seat 22 between the two parallel arms at the lower end of the left rotating shaft bracket 21.

[0045] Preferably, dust collection grooves are designed on the left fixed shaft 26, the rotating shaft 26 and the rotating shaft steel pad 24 to prevent jamming caused by dust or dirt.

[0046] Preferably, the rotation joint of the left unfolding drive assembly 2 is achieved by solid lubrication; the rotation joint refers to the joint between the rotating shaft 23 and the left fixed shaft 26, the joint between the end of the rotating shaft 23 and the two parallel arms at the lower end of the left rotating shaft bracket 21, and the joint between the rotating shaft steel pad 24 and the two parallel arms at the lower end of the left rotating shaft bracket 21.

[0047] like Figure 3 As shown, the right unfolding drive assembly 3 includes a right rotating shaft bracket 31, a rotating shaft mounting base 32, a rotating shaft 33, a rotating shaft steel pad 34, a right drive torsion spring 35, a right fixed shaft 36, a fixed shaft end cover 37, a torsion spring sleeve 38, and a fixed shaft locking screw 39.

[0048] The right expansion drive component 3 is completely identical to the left expansion drive component 2, and their connection relationship will not be described again.

[0049] like Figure 4 As shown, the climbing structure 1 adopts a ladder structure, which includes seven groups of substructures. The seven groups include ten long ladder frames 111, two short ladder frames 112, five long cross braces 113, two short cross braces 114, ten three-hole connectors 115, and four two-hole connectors 116.

[0050] The first substructure is located at the bottom of the climbing structure and is used to touch the attachment. The first substructure is equipped with a first short cross brace and two two-hole joints 116 are arranged at the upper end. The two two-hole joints are welded to a short cross brace in the horizontal direction and to one end of two long ladder frames 111 in the vertical direction. The other end of the two long ladder frames 111 is welded to two three-hole joints 115.

[0051] The second substructure is located above the first substructure. Two three-hole joints 115 are welded together with a long cross brace 113 in the horizontal direction and together with two short ladder frames 112 in the vertical direction. Buffer rope mounting seats 121 of flexible overlapping components 12 are installed on the two short ladder frames 112.

[0052] The third substructure is located above the second substructure, with one end of each of the two buffer rope mounting bases 121 welded to one of the two three-hole connectors 115. The three-hole connectors 115 are welded to a long cross brace 113 in the horizontal direction and to one end of each of the two long ladder frames 111 in the vertical direction.

[0053] The sixth, fifth, and fourth substructures are located above the third substructure in sequence. Similar to the third substructure, they are also welded together by a three-hole joint, a vertical long ladder frame, and a horizontal long cross brace.

[0054] The seventh substructure is located above the sixth substructure and at the top of the climbing structure, closest to the cabin. It has two two-hole joints 116 on both sides. The two two-hole joints 116 are welded to a short cross brace 114 in the horizontal direction and to the other end of two long ladder frames 111 in the vertical direction. The cylindrical surfaces of the two rotating shaft mounting seats 22 are inserted into the mounting holes of the two two-hole joints 116 on both sides and connected as one unit by screws.

[0055] like Figure 5 As shown, the flexible overlap assembly 12 includes a buffer rope mounting base 121, a buffer rope assembly 122, a buffer rope locking screw 123, and a buffer rope adjusting shim 124.

[0056] The buffer rope mounting base 121 is welded to the climbing structure 1 as a whole. The buffer rope assembly 122 is installed between the two buffer rope mounting bases 121 and is installed in conjunction with the through holes at the ends of the buffer rope mounting bases 121. The buffer rope adjusting shim 124 is located between the buffer rope assembly 122 and the buffer rope mounting base 121. The different preload requirements of the buffer rope assembly 122 can be achieved by adjusting the thickness of the buffer rope shim 124. The buffer rope assembly 122 is connected to the buffer rope mounting base 121 as a whole by the buffer rope locking screw 123.

[0057] like Figure 6 As shown, the buffer rope assembly 122 includes a wire rope 1221, a wire rope crimping joint 1222, a wire rope mounting base 1223, and a wire rope sleeve 1224;

[0058] After the wire rope 1221 is inserted into the wire rope mounting base 1223, it is crimped with the wire rope crimping head 1222. The wire rope sleeve 1224 is a semi-cylindrical sleeve. Two wire rope sleeves 1224 are installed in each wire rope mounting base 1223, located between the wire rope mounting base 1223 and the wire rope crimping head 1222. The outer cylindrical surface formed by the two wire rope sleeves 1224 is fitted with the inner cylindrical surface of the wire rope mounting base 1223 for installation.

[0059] The outer cylindrical surface of the wire rope mounting base 1223 is fitted with the through hole at the end of the buffer rope mounting base 121. When adjusting the pretension of the wire rope 1221, the buffer rope adjusting shim 124 is inserted into the wire rope mounting base 1223.

[0060] The parts of this invention not described in detail are common knowledge to those skilled in the art.

Claims

1. A foldable, automatically unfolding climbing device, characterized in that, include: Climbing structure (1), left deployment drive assembly (2), right deployment drive assembly (3) and flexible overlapping assembly (12); The upper end of the climbing structure (1) is fixedly connected to the bulkhead. The left deployment drive assembly (2) and the right deployment drive assembly (3), which have the same structure, are fixed on the left and right sides of the upper end of the climbing structure (1), respectively. After the climbing structure (1) is connected to the left deployment drive assembly (2) and the right deployment drive assembly (3) as a whole, the axes of the left deployment drive assembly (2) and the right deployment drive assembly (3) are collinear and perpendicular to the deployment direction of the climbing structure (1). The climbing structure (1) rotates around the axes of the left deployment drive assembly (2) and the right deployment drive assembly (2) to adapt to different terrains and deployment postures. The flexible overlapping assembly (12) is installed on the climbing structure (1) and is used to buffer and wrap the overlapping surface during deployment.

2. The foldable automatic unfolding climbing device according to claim 1, characterized in that: The left unfolding drive assembly (2) includes a left rotating shaft bracket (21), a rotating shaft mounting seat (22), a rotating shaft (23), a rotating shaft steel pad (24), a left drive torsion spring (25), a left fixed shaft (26), a fixed shaft end cap (27), and a torsion spring sleeve (28); The left pivot bracket (21) is connected to the bulkhead by screws; the lower end of the left pivot bracket (21) is slotted to form two parallel arms, and the two parallel arms are provided with the same cylindrical inner hole along the axis. One end of the left fixed shaft (26) passes through the cylindrical inner hole. A rotating shaft (23) is provided between the left fixed shaft (26) and one end of the pivot mounting seat (22). A rotating shaft steel pad (24) is provided between the two end faces of the rotating shaft (23) and the two parallel arms at the lower end of the left pivot bracket (21); the other end of the pivot mounting seat (22) is connected to the climbing structure (1). The fixed shaft end cap (27) is connected to the left rotating shaft bracket (21) by screws. The fixed shaft end cap (27) is provided with a special-shaped hole. The end of the left fixed shaft (26) is provided with a special-shaped shaft. The special-shaped hole of the fixed shaft end cap (27) cooperates with the special-shaped shaft of the left fixed shaft (26) to prevent the left fixed shaft (26) from rotating. A left drive torsion spring (25) is fitted on the other end of the left fixed shaft (26). The shaft end of the left fixed shaft (26) is provided with a mounting groove, which cooperates with the fixed end of the left drive torsion spring (25). The rotating end of the left drive torsion spring (25) is installed in conjunction with the spring mounting hole of the rotating shaft mounting seat (22). The rotating shaft mounting seat (22) is driven to rotate by the left drive torsion spring (25), thereby driving the climbing structure (1) connected to the rotating shaft mounting seat (22) to unfold. The torsion sleeve (28) and the threaded hole at the shaft end of the left fixed shaft (26) are connected as one piece by screws, and the left drive torsion spring (25) is fitted in it. The external thread of the fixed shaft locking screw (29) is connected and fixed to the threaded hole of the left fixed shaft (26), thereby constraining the left fixed shaft (26) to move axially.

3. The foldable automatic unfolding climbing device according to claim 2, characterized in that: The outer surface of the rotating shaft (23) is an irregular shaft shape, which matches the irregular inner hole of the rotating shaft mounting seat (22); the inner ring of the rotating shaft steel pad (24) is an irregular shape, which matches the irregular shaft shape of the outer surface of the rotating shaft (23).

4. The foldable automatic unfolding climbing device according to claim 3, characterized in that: The left rotating shaft bracket (21) and the left fixed shaft (26) are fixed in place. The rotating shaft mounting seat (22) rotates, which drives the rotating shaft (23) to rotate. The rotating shaft (23) then drives the rotating shaft steel pad (24) to rotate.

5. A foldable, automatically unfolding climbing device according to claim 2, characterized in that: The rotating shaft steel pad (24) axially limits the rotating shaft mounting seat (22) between the two parallel arms at the lower end of the left rotating shaft bracket (21).

6. A foldable, automatically unfolding climbing device according to claim 2, characterized in that: Dust collection grooves are designed on the left fixed shaft (26), rotating shaft (26) and rotating shaft steel pad (24) to prevent jamming caused by dust or dirt.

7. A foldable, automatically unfolding climbing device according to claim 2, characterized in that: The rotating joints of the left unfolding drive assembly (2) are lubricated with solid lubrication. The rotating joints refer to the two parallel arms between the rotating shaft (23) and the left fixed shaft (26), the two parallel arms between the end of the rotating shaft (23) and the lower end of the left rotating shaft bracket (21), and the two parallel arms between the rotating shaft steel pad (24) and the lower end of the left rotating shaft bracket (21). The rotating joints of the right unfolding drive assembly (3) are lubricated with solid lubrication in the same way as the left unfolding drive assembly (2).

8. A foldable, automatically unfolding climbing device according to claim 1, characterized in that: The climbing structure (1) adopts a ladder structure.

9. A foldable, automatically unfolding climbing device according to claim 1, characterized in that: The flexible overlap assembly (12) includes a buffer rope mounting base (121), a buffer rope assembly (122), a buffer rope locking screw (123), and a buffer rope adjusting shim (124); The buffer rope mounting base (121) is welded to the climbing structure (1) as a whole. The buffer rope assembly (122) is installed between the two buffer rope mounting bases (121) and is installed in conjunction with the through hole at the end of the buffer rope mounting base (121). The buffer rope adjusting shim (124) is located between the buffer rope assembly (122) and the buffer rope mounting base (121). The different preload requirements of the buffer rope assembly (122) are achieved by adjusting the thickness of the buffer rope shim (124). The buffer rope assembly (122) is connected to the buffer rope mounting base (121) as a whole by the buffer rope locking screw (123).

10. A foldable, automatically unfolding climbing device according to claim 9, characterized in that: The buffer rope assembly (122) includes a wire rope (1221), a wire rope crimping connector (1222), a wire rope mounting base (1223), and a wire rope sleeve (1224); After the wire rope (1221) is inserted into the wire rope mounting base (1223), it is crimped with the wire rope crimping head (1222); the wire rope sleeve (1224) is a semi-cylindrical sleeve, and two wire rope sleeves (1224) are installed in each wire rope mounting base (1223), located between the wire rope mounting base (1223) and the wire rope crimping head (1222), and are installed by the outer cylindrical surface formed by the two wire rope sleeves (1224) mating with the inner cylindrical surface of the wire rope mounting base (1223); The outer cylindrical surface of the wire rope mounting base (1223) is fitted with the through hole at the end of the buffer rope mounting base (121). When adjusting the preload of the wire rope (1221), the buffer rope adjusting shim (124) is inserted into the wire rope mounting base (1223).

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