Normal axis wrench suitable for a small operation space
2009
A normal axis wrench suitable for a small operation space, comprises a wrench head and a wrench bar, wherein the outer end of the wrench head is provided with a general joint mated with a nut and the wrench head is connected with the wrench bar by the normal corner of a space gear mechanism and the space gear mechanism is formed by engaging a driving tapered gear with a driven tapered gear and covered by a corner shell and the driving tapered gear is fixed and connected with the wrench bar and the driven tapered gear is fixed and connected with the wrench head; a shell pressure cover is sleeved in the middle of the wrench head and the in screwed connection with the corner shell and a sleeve is sleeved on the wrench bar and in screwed connection with another part of the corner shell and a connection joint is arranged on the outer end of the wrench bar. The wrench has compact structure and relative long wrench bar and goes deep into very small space in the device; the required operation space of the wrench is very small and it is only necessary to make the wrench head extend into the device without swing space of the wrench bar. The wrench can cooperate with the manual wrench and dynamic wrench of all types and also cooperate with them by a lever.
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