CN-121990189-A - Manual unlocking tool

CN121990189ACN 121990189 ACN121990189 ACN 121990189ACN-121990189-A

Abstract

The application provides a manual unlocking tool which is characterized by comprising a ratchet wheel assembly, a force measuring assembly and an unlocking rod assembly, wherein the ratchet wheel assembly, the force measuring assembly and the unlocking rod assembly are arranged on a compression device outside a space station cabin. The ratchet assembly is configured to provide continuous reciprocating screwing power under the action of external force, the force measuring assembly is fixedly connected with the ratchet assembly and configured to limit the screwing power output by the ratchet assembly in a moment mode so as to provide input moment within a preset limit, the unlocking rod assembly is arranged at one end, far away from the ratchet assembly, of the force measuring assembly and is configured to be in butt joint with a loading nut of the compressing device and drive the loading nut to rotate through the input moment, and compression constraint is relieved through rotary displacement of the loading nut.

Inventors

YANG JIAXIN
FU HAO
GUO TAO
WANG YIYAO
RONG JIANCHEN
ZHANG GE
GUO CUI
LU XUDONG

Assignees

北京卫星环境工程研究所

Dates

Publication Date: 20260508
Application Date: 20251231

Claims (10)

1. A manual unlocking tool, characterized in that is applied to the closing device outside space station cabin, includes: A ratchet assembly configured to provide continuous reciprocating screwing power under an external force; The force measuring assembly is fixedly connected with the ratchet assembly and is configured for limiting torque of screwing power output by the ratchet assembly so as to provide input torque within a preset limit; The unlocking rod assembly is arranged at one end, far away from the ratchet wheel assembly, of the force measuring assembly, is configured to be in butt joint with a loading nut of the compressing device, drives the loading nut to rotate through input torque, and releases compression constraint through rotary displacement of the loading nut.
2. The manual unlocking tool of claim 1, wherein the ratchet assembly comprises: The ratchet device is of a unidirectional transmission structure and comprises a pawl, a ratchet and a shell; an elongated handle fixedly connected with the housing and configured to drive the ratchet device to rotate back and forth under the action of an external force, The ratchet wheel is connected with the load nut in a clamping way, the load nut is screwed down by the unlocking rod component, the ratchet wheel is connected with the load nut in a clamping way, the load nut is screwed down by the unlocking rod component, and the ratchet wheel is connected with the load nut in a clamping way.
3. The manual unlocking tool of claim 2, wherein, The lengthened handle is of a multi-section structure, all sections are connected through screwing and splicing, and the length of the handle is adjusted to meet the grasping requirements of astronauts.
4. The manual unlocking tool of claim 2, wherein, The one end that the extension handle is kept away from the dynamometry subassembly is fixed to be provided with and is prevented floating the ring, prevent floating the ring with extension handle coaxial setting is configured to prevent manual unlocking tool drift under the outside weightlessness environment.
5. The manual unlocking tool of claim 1, wherein the force measuring assembly comprises: And the force measuring device is in transmission fit with the ratchet wheel assembly and is configured to control the input torque in the unlocking process not to exceed the preset torque so as to avoid the damage of the pressing device.
6. The manual unlocking tool of claim 1, wherein the unlocking lever assembly comprises: The unlocking rod body is movably connected with the force measuring assembly; The locking mechanism is arranged at one end, close to the force measuring assembly, of the unlocking rod body and is configured to enable the unlocking rod body to be locked or unlocked with the force measuring assembly.
7. The manual unlocking tool of claim 6, wherein, The unlocking rod body is far away from one end of the locking mechanism, an inner hexagonal screwdriver head is arranged at one end of the unlocking rod body, and the inner hexagonal screwdriver head and the unlocking rod body are integrally formed and are configured to be matched with the loading nut of the pressing device.
8. The manual unlocking tool of claim 7, wherein, The unlocking rod body is far away from one end of the locking mechanism and is provided with a cone structure, and the cone structure and the inner hexagonal screwdriver head are coaxially arranged and positioned on the outer side of the inner hexagonal screwdriver head and are configured to assist the unlocking rod body to be inserted into the loading nut.
9. The manual unlocking tool of claim 6, wherein the unlocking lever assembly comprises: The spring bolt mechanism is arranged in the plunger hole of the unlocking rod body and at least partially extends out of the plunger hole, and is configured to pop out and clamp the pressing device after unlocking is completed, so that the unlocking rod assembly is prevented from drifting on the track.
10. The manual unlocking tool of claim 9, wherein the latch mechanism comprises: the thread base rod is fixedly arranged in the plunger hole, The wedge-shaped plunger is arranged in the plunger hole and is movably connected with the threaded base rod, and a limit nut is sleeved outside the wedge-shaped plunger; the elastic piece is sleeved on the wedge-shaped plunger, two ends of the elastic piece are respectively abutted with the threaded base rod and the limit nut and configured to drive the wedge-shaped plunger to be abutted with the side wall of the pressing device, And the wedge-shaped plunger is clamped with the limiting hole on the side wall of the pressing device in response to displacement of the loading nut of the pressing device, so that on-track anti-drifting of the unlocked assembly is realized.

Description

Manual unlocking tool Technical Field The application relates to the technical field of space station cabin outside operation tools, in particular to a manual unlocking tool. Background In the technical field of space station cabin outside operation tools, a compacting device needs to be unlocked after a space station is on the track, if automatic unlocking cannot be achieved on the track, system single-point faults caused by long-term occupation of cabin outside resources are caused, a astronaut needs to go out of the cabin to perform manual unlocking, and it is particularly important to design an unlocking tool which is used outside the cabin of the astronaut and aims at the characteristics of the compacting device. Disclosure of Invention The application aims to provide a manual unlocking tool aiming at the technical problems in the related art. The specific scheme is as follows: The embodiment of the application provides a manual unlocking tool, which is applied to a compressing device outside a space station cabin and comprises a ratchet wheel assembly, a force measuring assembly, an unlocking rod assembly and a compressing constraint relieving assembly, wherein the ratchet wheel assembly is configured to provide continuous reciprocating screwing power under the action of external force, the force measuring assembly is fixedly connected with the ratchet wheel assembly and is configured to limit the screwing power output by the ratchet wheel assembly to provide input torque within a preset limit, the unlocking rod assembly is arranged at one end, far away from the ratchet wheel assembly, of the force measuring assembly and is configured to be in butt joint with a loading nut of the compressing device and drive the loading nut to rotate through the input torque, and the compressing constraint is relieved through the rotary displacement of the loading nut. In some embodiments, the ratchet assembly comprises a ratchet device which is of a one-way transmission structure and comprises a pawl, a ratchet and a shell, an extension handle fixedly connected with the shell and used for driving the ratchet device to rotate back and forth under the action of external force, wherein the pawl is clamped with the ratchet and synchronously drives the unlocking rod assembly to unscrew the loading nut in response to the anticlockwise rotation of the extension handle, and the pawl is disengaged from the ratchet and idles in response to the clockwise rotation of the extension handle and does not drive the loading nut to rotate reversely. In some embodiments, the elongated handle is a multi-segment structure, the segments are connected by a screw splice, and the length of the handle is configured to be adjusted to adapt to the gripping requirements of the astronaut. In some embodiments, an end of the elongated handle remote from the force measurement assembly is fixedly provided with a drift prevention ring coaxially disposed with the elongated handle and configured to prevent drift of the manual unlocking tool in an off-cabin weightless environment. In some embodiments, the force measuring assembly includes a force measuring device in driving engagement with the ratchet assembly configured to control an input torque during unlocking from exceeding a predetermined torque to avoid damage to the hold down device. In some embodiments, the unlocking lever assembly comprises an unlocking lever body movably connected with the force measuring assembly, and a locking mechanism arranged at one end of the unlocking lever body adjacent to the force measuring assembly and configured to enable the unlocking lever body to be locked or unlocked with the force measuring assembly. In some embodiments, an end of the unlocking lever body remote from the locking mechanism is provided with an internal hexagonal driver head integrally formed with the unlocking lever body and configured to fit the loading nut of the compression device. In some embodiments, an end of the unlocking lever body remote from the locking mechanism is provided with a cone structure coaxially arranged with and outside the internal hexagonal driver head configured to assist the unlocking lever body in inserting the loading nut. In some embodiments, the unlocking lever assembly includes a latch mechanism mounted in and at least partially extending out of a plunger bore of the unlocking lever body and configured to eject and clamp the hold down device after unlocking is complete, preventing the unlocking lever assembly from drifting on-track. In some embodiments, the lock tongue mechanism comprises a threaded base rod, a wedge-shaped plunger, a limit nut and an elastic piece, wherein the threaded base rod is fixedly arranged in the plunger hole, the wedge-shaped plunger is arranged in the plunger hole and is movably connected with the threaded base rod, the limit nut is sleeved outside the wedge-shaped plunger, the elastic piece is sleeved on the wedge-shaped plunger, two end