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Coaxial double-nut coupling mechanism

A coupling mechanism and double nut technology, applied in the mechanical field, can solve the problems of difficult disassembly, incompatibility, large space occupation, etc., and achieve the effects of wide application range, improved service life, and high coupling accuracy.

Inactive Publication Date: 2013-04-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The threaded connection is only suitable for carrying torque transmitted in one direction and requires a backup nut, which takes up a lot of space
The interference fit is difficult to disassemble, and it is not suitable for mechanisms that are frequently disassembled and adjusted.

Method used

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  • Coaxial double-nut coupling mechanism
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Embodiment Construction

[0016] The present invention will be further described in conjunction with accompanying drawing:

[0017] Shown with reference to accompanying drawing, a kind of novel double-nut coaxial coupling mechanism comprises transmission wheel 1, transmission nut 2, locking nut 3, transmission shaft 4, fastening screw 5, coupling screw 6. Transmission wheel 1 is provided with notch; Transmission shaft 4 is shaped on the screw thread that cooperates with transmission nut 3, locking nut 4; Drive shaft 4 and drive wheel 1 adopt clearance fit. By controlling the machining accuracy of the transmission wheel 1 and the transmission shaft 4, the purpose of controlling the connection accuracy thereof can be achieved. Screw the transmission nut 2 into the threaded part of the transmission shaft 4 until the bottom surface of the transmission nut 2 is close to the bottom surface of the notch of the transmission wheel 1 . Then tighten the connecting screws 6 in the 6 stepped long holes of the dri...

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Abstract

The invention discloses a coaxial double-nut coupling mechanism which has the advantages of reasonable structure, high coaxial rotary precision, high reliability and no empty return, can adapt to forward and reverse rotation alternate torques, transfers torques at high efficiency and saves space. The connection precision of the coaxial double-nut coupling mechanism can be controlled by controlling the machining precision of a driving wheel (1) and a transmission shaft (4). The faying surface of the mechanism can generate a big static frictional force by the screwing force of two nuts, and the torque is totally transferred by the frictional force. In addition, the mechanism can form self locking and has small possibility of unbuckling when micro elongation generated for a screw pitch is formed because a tightening screw bears a tensile force.

Description

technical field [0001] The invention relates to the field of machinery, especially in the field of precision manufacturing. Compared with the traditional key, pin and other connection methods, it can adapt to the alternating torque of forward and reverse rotation, has high coaxial rotation accuracy, high reliability, and no empty backhaul. , high-efficiency torque transmission, and space-saving double-nut coaxial coupling mechanism. Background technique [0002] The most traditional and common method for coaxial torque transmission between the wheel and the shaft is through keys, pins, threads, interference fits, etc. However, these connection methods often have deficiencies, such as key or pin connection, which transmits torque by shear force. When carrying forward and reverse alternating torque for a long time, a shear gap will gradually occur, and as the gap increases, the shear gap will Cut the impact more and more until it is damaged. The threaded connection is only s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D1/076F16B1/00
Inventor 刘延杰吴明月荣伟彬孙立宁
Owner HARBIN INST OF TECH
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