Key for spinning machine and composite draw bail of flat friction
A connection structure and plane technology, applied in the direction of connection components, mechanical equipment, etc., can solve the problems of keyway and hole diameter increase, tapered pulley short operating life, affecting mechanical operating performance, etc., to improve the service life and the quality of mechanical products stable effect
Inactive Publication Date: 2009-07-29
SHANGHAI TEXTILE MACHINERY COMPLEX
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Problems solved by technology
[0004] The purpose of the present invention is to provide a new composite connection structure of key and plane friction for textile machinery, so as to solve the problem of increasing the keyway and hole diameter and affecting the operation of the machine due to the ordinary flat key connection between the key and the keyway in the prior art. performance, the problem of short running life of tapered pulleys
Method used
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[0016] Further illustrate structural features of the present invention below in conjunction with accompanying drawing.
[0017] as attached figure 1 , accompanying drawing 2a, accompanying drawing 2b, accompanying drawing 3a and accompanying drawing 3b show a kind of key and plane friction composite connection structure for textile machine, comprising: rotating shaft 1, conical pulley 2, flat key 4 and fixing Part 5, which is characterized in that: the shaft head of the rotating shaft 1 is a flat tenon structure 11, and there is no gap on the shaft head is equipped with a friction transmission washer 3 that matches the flat tenon structure 11; the friction transmission washer 3 has a grooved end surface Contact with the hub end surface 21 of the tapered pulley 2; the flat key 4 connects the transmission shaft 1 and the tapered pulley 2.
[0018] In use, when the rotating shaft 1 is actively rotating, the torque of the rotating shaft 1 drives the friction transmission washer 3...
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The invention discloses a compound connection structure of a key and plane friction for a textile machine, comprising: a rotating shaft, a tapered pulley, a flat key and a fixing piece. The shaft head of the rotating shaft is a flat tenon structure, and There is a friction transmission washer that matches the flat tenon structure without clearance; the end face with the groove of the friction drive washer is in contact with the end face of the shaft hub of the tapered pulley; the flat key connects the drive shaft and the tapered pulley, so that the nut is pressed Under the action of force, the conical pulley and the shaft are further connected. The composite connection structure of key and plane friction for textile machinery designed through the technical scheme of the invention has the advantages of improving the service life of the tapered pulley and stabilizing the quality of the finished machine.
Description
technical field [0001] The invention relates to parts for spinning machines, in particular to a compound coupling structure of keys and plane friction for spinning machines. Background technique [0002] In the prior art, the structure of the continuously variable transmission for the self-leveling of the wool spinning needle carding machine is as follows: two conical pulleys are sequentially socketed on the two transmission shafts, and the transmission shaft and the conical pulleys are connected by a flat key. When the torque is transmitted, although the end face of the shaft hub is squeezed, the friction surface is very small, so the frictional damping effect is very small. Since there is a gap between the key and the keyway, there is an impact between the key and the keyway during the process of starting and stopping; because the operating speed of the device is above 3000 rpm, the impact between the two is relatively large. The tapered pulley is made of aluminum alloy, ...
Claims
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IPC IPC(8): F16B21/00
Inventor 王宝昌徐永明吴晓骏
Owner SHANGHAI TEXTILE MACHINERY COMPLEX