Guide wheel capable of being automatically folded and folding mechanism for same
A folding mechanism and a guide wheel technology, applied in the field of guide wheels, can solve the problems of increased bearing capacity and complex structure of the guide wheels, and achieve the effects of high reliability and simple structure
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[0021] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.
[0022] figure 1 and figure 2 A structural view of the automatically foldable guide wheel according to the present invention is shown. Such as figure 1 and figure 2 As shown, the automatically foldable guide wheels include a lifting mechanism and a folding mechanism.
[0023] The lifting mechanism includes: a screw nut transmission mechanism composed of a screw rod 15 and a nut 1, an inner cylinder 2 and an outer cylinder 3 sleeved together, a driving box 16 and a driving box fixed to the top of the outer cylinder 3 for driving the screw. It is fixed to the bearing seat 6 at the lower end of the inner cylinder 2 , wherein the nut 1 is fixed to the inner cylinder 2 .
[0024] In this way, when the drive box 16 drives the screw rod 15 to rotate ...
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