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Fastening device and its electric wrench

A technology of fastening device and electric wrench, which is applied in the direction of threaded fasteners, locking fasteners, motor tools, etc., to achieve the effect of small operating space requirements and elimination of displacement deviation and angular deviation

Active Publication Date: 2018-10-12
SHANGHAI AEROSPACE SYST ENG INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing electric wrenches are all designed for traditional screws or nuts, and there are the following disadvantages in applying them to fastening devices that cannot be loosened: 1) The operation reaction force needs to be eliminated by the astronauts; 2) The interaction between the wrench and the screw during the operation process The movement of the wrench and the screw along the axial direction needs to be completed by the astronauts

Method used

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  • Fastening device and its electric wrench
  • Fastening device and its electric wrench
  • Fastening device and its electric wrench

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Embodiment Construction

[0044] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0045] The present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that the drawings are all in a very simplified form, and for the sake of clarity, the size and relative size of layers and regions may be exaggerated.

[0046] see figure 1 , the non-removable fastening device and its electric wrench provided by the present invention include a multifunctional electric wrench 1, an M5 non-removable fastening device 2, and an M8 non-removable fastening device 3;

[0047] In this example, the M5 captive fastening device 2 includes a captive housing 21, a captive screw 22 and a spring 23; the hexagonal surface 24 of the captive shell 21 and the reaction force sleeve of the ...

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Abstract

The invention provides a locking fastening device and an electric wrench thereof. The locking fastening device comprises a locking shell, a locking screw and a spring. The locking shell is composed of a conical face, a hexagonal face and a flange. The conical face is used for eliminating the displacement deviation and the angular deviation of the locking fastening device and an operation tool. The hexagonal face is used for eliminating operation counterforce. The electric wrench of the locking fastening device comprises a shell, a driving assembly, a reversing assembly and an output assembly. The shell supports all parts of the electric wrench. The driving assembly transmits torque to the output assembly through the reversing assembly so as to achieve a screwing function on the locking fastening device. By the adoption of the disclosed scheme, the beneficial effects that counterforce transmission is avoided, the wrench can axially move automatically in the axial direction of the screw, torque can be output at multiple angles, and the requirement for operation space is low are achieved.

Description

technical field [0001] The invention relates to a fastening device and an electric wrench thereof. Background technique [0002] The non-removable fastening device is usually installed on the equipment that needs to be maintained in a non-gravity environment, such as a space station. The device remains connected. The use of loose fastening device can avoid the risk factor of screw drifting away during the disassembly process, simplify the disassembly and assembly steps of the equipment, and reduce the difficulty of operation. [0003] The shell of the existing non-releasable fastening device is generally cylindrical, and its shortcoming is mainly that it does not consider eliminating the operation reaction force of the astronauts, and the requirements for the astronauts are relatively high. [0004] An electric wrench is a power tool powered by a motor and generates torque through a transmission mechanism to quickly disassemble bolts or nuts. Improve work efficiency and r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B39/00F16B35/00B25B21/00
CPCB25B21/002F16B35/00F16B39/00
Inventor 杨健刘殿富陈萌张崇峰苗军韩亮亮
Owner SHANGHAI AEROSPACE SYST ENG INST
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