CN-122016290-A - Device for testing foot joint movement life of extravehicular space suit

CN122016290ACN 122016290 ACN122016290 ACN 122016290ACN-122016290-A

Abstract

The device for testing the joint movement life of the foot part of the extravehicular space suit comprises a lifting pressing component, a torsion force application component, a lower gesture adjusting and reversing component, an upper gesture adjusting and reversing component, a rigid constraint component, a flexible constraint component and a rigid constraint component, wherein the lifting pressing component is arranged on the frame component, the torsion force application component is arranged on the frame component and is positioned below the lifting pressing component, the lower gesture adjusting and reversing component is arranged on the torsion force application component, the upper gesture adjusting and reversing component is arranged on the lifting pressing component and is positioned above the lower gesture adjusting and reversing component, the foot part of the space suit is arranged between the lower gesture adjusting and reversing component and the upper gesture adjusting and reversing component, the rigid constraint component is arranged between the foot part of the space suit and the lower gesture adjusting and reversing component. The invention can be adapted to the feet of the extravehicular space suit with different sizes and different models, can realize the simulation of the motion trail of the ankle joint of the foot of the space suit by being fixed by the external drive and the binding belt, can apply the downward pressure to the foot of the space suit during the test to simulate the working pressure during the motion of the ankle joint of the foot of the space suit, and has the characteristics of high test precision, good test safety and high test reliability.

Inventors

WANG TIEJUN
LUO HAITAO
ZHANG WEI
LI YUXIN
TIAN YUANZHENG
SUN QIANG
CHI HAODONG
SUN HUAQIANG
XIAO LEI

Assignees

中国科学院沈阳自动化研究所

Dates

Publication Date: 20260512
Application Date: 20260407

Claims (8)

1. The device for testing the joint movement life of the foot of the extravehicular aerospace suit is characterized by comprising a frame assembly, a lifting and pressing assembly, a torsion force application assembly, a lower gesture adjustment reversing assembly, an upper gesture adjustment reversing assembly, a rigid constraint assembly and a flexible constraint assembly, wherein the lifting and pressing assembly is arranged on the frame assembly, the torsion force application assembly is arranged on the frame assembly and is positioned below the lifting and pressing assembly, the lower gesture adjustment reversing assembly is arranged on the torsion force application assembly, the upper gesture adjustment reversing assembly is arranged on the lifting and pressing assembly and is positioned above the lower gesture adjustment reversing assembly, the foot of the aerospace suit is arranged between the lower gesture adjustment reversing assembly and the upper gesture adjustment reversing assembly, the rigid constraint assembly is arranged between the foot of the aerospace suit and the lower gesture adjustment reversing assembly, and the flexible constraint assembly is arranged between the foot of the aerospace suit and the rigid constraint assembly.
2. The foot joint movement life testing device for the extravehicular space suit is characterized in that the frame assembly comprises a frame bottom plate, supporting guide columns and a frame top plate, the frame bottom plate is horizontally arranged and fixedly connected to the bottom ends of the supporting guide columns, the frame top plate is horizontally arranged and fixedly connected to the top ends of the supporting guide columns, and the supporting guide columns are vertically arranged and distributed at intervals along the edges of the frame bottom plate and the frame top plate.
3. The device for testing the movement life of the foot joints of the extravehicular space suit is characterized in that the lifting pressing assembly comprises a lifting guide sliding sleeve, a lifting sliding table plate, a lifting pressing adjusting handle, a screw rod, a screw nut, a first bearing seat and a second bearing seat, the lifting guide sliding sleeve is connected to a supporting guide upright post in a sliding mode, the lifting sliding table plate is horizontally arranged and fixedly connected to the lifting guide sliding sleeve, the screw rod is vertically arranged and penetrates through the lifting sliding table plate, the bottom end of the screw rod is connected with a bottom plate of a frame in a rotating mode through the first bearing seat, the upper end of the screw rod is connected with a top plate of the frame in a rotating mode through the second bearing seat, the top end of the screw rod extends above the top plate of the frame, and the lifting pressing adjusting handle is fixedly installed at the top end of the screw rod.
4. The foot joint movement life testing device for the extravehicular space suit is characterized in that the upper posture-adjusting reversing assembly comprises an upper reversing turntable, an upper turntable switching bearing, a foot switching flange frame and an upper turntable stopping pin, the upper reversing turntable is horizontally arranged and located above a lifting sliding table plate, the upper reversing turntable is rotationally connected with the lifting sliding table plate through the upper turntable switching bearing, the top end of the foot switching flange frame is fixedly connected with the upper reversing turntable, the bottom end of the foot switching flange frame is located below the lifting sliding table plate, and the upper turntable stopping pin is vertically inserted between the upper reversing turntable and the lifting sliding table plate.
5. The device for testing the movement life of the foot joints of the extravehicular space suit is characterized in that the torsion force application assembly comprises a driving motor, a motor support, a coupler, a driving shaft, a third bearing seat, a fourth bearing seat, a bearing seat coupling bottom plate, a first movable limiting piece, a second movable limiting piece, movable limiting piece stop pins and movable limiting piece stop blocks, the motor support is fixedly connected to a frame bottom plate, the driving motor is horizontally fixedly arranged in the motor support, the bearing seat coupling bottom plate is horizontally fixedly arranged on the frame bottom plate, the third bearing seat and the fourth bearing seat are arranged on the bearing seat coupling bottom plate in parallel, one end of the driving shaft is in rotary connection with the bearing seat coupling bottom plate through the third bearing seat, the other end of the driving shaft is in rotary connection with the bearing seat coupling bottom plate through the fourth bearing seat, the power output shaft of the driving motor is coaxially and fixedly connected with the end of the driving shaft through the coupler, the movable limiting piece stop pins are two in number and horizontally inserted on the bearing bodies of the third bearing seat, the two movable limiting piece stop pins are distributed in a bilateral symmetry mode relative to the driving shaft, the first movable limiting piece is fixedly arranged on the first movable limiting piece and the second limiting piece and is fixedly arranged between the second movable limiting piece and the fourth limiting piece and the movable limiting piece and the second limiting piece and is fixedly arranged between the movable limiting piece and the second limiting piece and the movable limiting piece.
6. The foot joint movement life testing device for the extravehicular space suit is characterized in that the lower posture-adjusting reversing assembly comprises a lower reversing turntable, a lower turntable reversing bearing, a reversing support and a lower turntable stopping pin, the reversing support is fixedly arranged on a driving shaft, the lower reversing turntable is horizontally arranged above the reversing support and is in rotary connection with the reversing support through the lower turntable reversing bearing, and the lower turntable stopping pin is vertically inserted between the lower reversing turntable and the reversing support.
7. The foot joint movement life testing device for the extravehicular space suit is characterized in that a plurality of rigid binding assemblies are arranged and distributed at intervals along the periphery of the upper surface of a lower reversing turntable, each rigid binding assembly comprises a base body, a sliding base body, a screw rod, a knob, a guide optical axis and a binding belt adapter, the base body is fixedly arranged on the lower reversing turntable, the screw rod is horizontally arranged on the base body, one end of the screw rod extends to the outside of the base body, the screw rod only has a rotation degree of freedom relative to the base body, the knob is fixedly arranged at the end part of the screw rod positioned on the outside of the base body, the guide optical axis is horizontally arranged and fixedly connected to the base body, the guide optical axis is parallel to the screw rod, the sliding base body is in threaded connection with the screw rod through an upper threaded hole of the sliding base body, the sliding base body is in sliding guide fit with the guide optical axis through an upper polished hole of the sliding base body, and the binding belt adapter is fixedly arranged at the top of the sliding base body.
8. The device for testing the joint movement life of the foot of the extravehicular space suit according to claim 7, wherein the flexible binding assembly is in a binding band mode, a lock catch and a lock tongue for adjusting the locking length of the binding band are arranged on the binding band, one end of the binding band is fixedly connected to the foot surface of the space suit, and the other end of the binding band is connected to the sliding seat body through a binding band adapter.

Description

Device for testing foot joint movement life of extravehicular space suit Technical Field The invention belongs to the technical field of performance testing of extravehicular space suit, and particularly relates to a foot joint movement life testing device of an extravehicular space suit. Background The extravehicular space suit is a key device for the spaceman to go out of the cabin for activity, and is a complex system integrating protection, life support and operation support, and the design and the performance of the extravehicular space suit are directly related to the safety and task success and failure of the spaceman. The foot of the space suit is a key component for a astronaut to finish the cabin-leaving activity, the space suit needs to have the characteristics of a multi-layer protection structure, flexible joint design and the like, and a device capable of meeting the joint movement life test of the foot of the space suit is necessary for verifying performance characteristics such as the joint movement life of the foot of the space suit. However, although the existing performance testing devices of the extravehicular space suit are of various types, the whole extravehicular space suit is mainly used as a testing object, and few testing devices are used for testing other parts of the space suit, and lack of the joint movement life testing device for the foot part of the space suit. Disclosure of Invention Aiming at the problems in the prior art, the invention provides the device for testing the joint movement life of the foot part of the extravehicular space suit, which can be adapted to the foot parts of the extravehicular space suit with different sizes and different types, can realize the simulation of the ankle joint movement track of the foot part of the space suit by being fixed by an external driving matched binding belt, can apply downward pressure to the foot part of the space suit during the test so as to simulate the working pressure during the ankle joint movement of the foot part of the space suit, and has the characteristics of high test precision, good test safety and high test reliability. The device for testing the joint movement life of the foot of the extravehicular space suit comprises a frame component, a lifting and pressing component, a torsion force application component, a lower gesture adjustment reversing component, an upper gesture adjustment reversing component, a rigid binding component and a flexible binding component, wherein the lifting and pressing component is arranged on the frame component, the torsion force application component is arranged on the frame component and is positioned below the lifting and pressing component, the lower gesture adjustment reversing component is arranged on the torsion force application component, the upper gesture adjustment reversing component is arranged on the lifting and pressing component and is positioned above the lower gesture adjustment reversing component, the foot of the space suit is arranged between the lower gesture adjustment reversing component and the upper gesture adjustment reversing component, the rigid binding component is arranged between the foot of the space suit and the lower gesture adjustment reversing component, and the flexible binding component is arranged between the foot of the space suit and the rigid binding component. The frame assembly comprises a frame bottom plate, support guide upright posts and a frame top plate, wherein the frame bottom plate is horizontally arranged and fixedly connected to the bottom ends of the support guide upright posts, the frame top plate is horizontally arranged and fixedly connected to the top ends of the support guide upright posts, and the support guide upright posts are vertically arranged and distributed at intervals along the edges of the frame bottom plate and the frame top plate. The lifting pressing assembly comprises a lifting guide sliding sleeve, a lifting sliding table plate, a lifting pressing adjusting handle, a screw rod, a screw nut, a first bearing seat and a second bearing seat, wherein the lifting guide sliding sleeve is connected to a supporting guide upright post in a sliding mode, the lifting sliding table plate is horizontally arranged and fixedly connected to the lifting guide sliding sleeve, the screw rod is vertically arranged and penetrates through the lifting sliding table plate, the bottom end of the screw rod is rotationally connected with a bottom plate of the frame through the first bearing seat, the upper end of the screw rod is rotationally connected with a top plate of the frame through the second bearing seat, the top end of the screw rod extends to the upper side of the top plate of the frame, and the lifting pressing adjusting handle is fixedly installed at the top end of the screw rod. The upper posture-adjusting reversing assembly comprises an upper reversing turntable, an upper turntable switching bearing, a foot switching