The purpose of this utility model provide a kind of simple to operate, production cost is low, the reliable bidirectional self-locking manual adjusting device of self-locking.
The purpose of this utility model is to realize like this, it is a retaining collar in the preceding hole of mount pad, one end of power transmission shaft is assemblied in the bearing at mount pad rear portion, the power transmission shaft other end passes the collar and places the drive plate of the collar to stretch into handle set, power transmission shaft and drive plate are by key connecting, and the end face of drive plate is
Shape, first bearing pin of establishing on the arc part of drive plate end face places in the pin shaft hole of handle set end face, the diameter of the pin shaft hole of handle set end face is greater than the diameter of first bearing pin, form a dead slot between the difform position of drive plate end face and the collar inwall, second bearing pin on the handle set end face places in the dead slot, wedging two rollers are provided with spring between roller and the roller in the dead slot between two second bearing pins.
The utility model has overcome the deficiency of worm gear, worm-drive adjusting device and motor-driven adjusting device, has simple to operate, full bi-directional self-locking, advantage that production cost is low.
The specific embodiment
With reference to Fig. 1, Fig. 2, mount pad 2 is fixed on the frame plate 1, and the collar 4 is fixed in the installing hole of mount pad 2, and drive plate 5 matches with the endoporus of the collar 4.Bearing 14 is assemblied in the bearing pilot hole of mount pad 2, the axle head of power transmission shaft 3 is assemblied in the dead eye of bearing 14, power transmission shaft 3 is provided with a keyway, power transmission shaft 3 passes from the endoporus of the collar 4, and cooperates with drive plate 5, and drive plate connects with power transmission shaft 3 by key, the other end of power transmission shaft 3 stretches in the endoporus of handle set 7, can establish gear and sprocket wheel on power transmission shaft, transmission is passed to next stage transmission mechanism 10, power transmission shaft also can directly be adjusted being adjusted mechanism.The drive plate end face is
Shape, first bearing pin 6,6 ' be assemblied in the bearing pin installing hole of drive plate 5 end face arc parts, first bearing pin 6,6 ' an end stretch out the end face of power transmission shaft 5, and stretch into the pin shaft hole 18,18 of handle set 7 ' in, pin shaft hole 18,18 ' the aperture greater than first bearing pin 6,6 ' the diameter of axle.The irregular shape of drive plate 5 end faces be by a plane 16 at top, the inclined- plane 15,15 of plane 16 2 sides ', plane 16 is with two inclined-planes 15,15 ' connect as one, and breach 17, the 17 ' formation of drive plate 5 end face arc parts upper end two sides, form a dead slot between the difform position of drive plate 5 end faces and the collar 4 inwalls.Second bearing pin 11,11 ' be assemblied in the bearing pin installing hole of handle set 7, second bearing pin 11,11 ' an end stretch out handle set 7 end faces, and stretch into by drive plate 5 and overcoat and cooperate in the dead slot that the back forms.With reference to Fig. 3, two second bearing pins 11,11 ' between dead slot in the wedging two rollers 12,12 ', two rollers 12,12 ' be two parallel columns, roller 12 and roller 12 ' between establish spring 13, spring 13 with two rollers 12,12 ' the roller cylindrical be pressed against inclined-plane 15,15 ' and the inner hole wall of the collar 4 on.Bearing pin one end is installed in the pin shaft hole that the other end of handle set 7 is established, and the other end of bearing pin is connected with handle 9.Operation principle: to the axle of machine, between the roller the position, when the gap is adjusted, when handle when clockwise rotating, latch on the handle drives handle set and rotates together, because the aperture of the pin-and-hole on the handle set is greater than the diameter of axle of first bearing pin, handle set temporarily can't be stirred drive plate and rotate, and second bearing pin that is assemblied on the handle set rotates with handle set, and second bearing pin is stirred roller, and, make a roller throw off the inclined-plane of being fitted with the spring compression.When a roller was thrown off the inclined-plane of being fitted, the pin shaft hole on the handle set also contacted with first bearing pin, and stirred first bearing pin drive drive plate and rotate.Power transmission shaft rotates with drive plate, and the rotation of power transmission shaft can pass motion to next stage or directly drive and be adjusted mechanism and adjust by drive disk assemblies such as gear or sprocket wheels.It is identical with the operation principle that clockwise rotates counterclockwise to drive handle set by handle, and after adjustment was finished, handle and handle set no longer rotated, and roller is fitted with the inclined-plane again under the elastic force effect of spring.In machine works, the turning moment that is sent by next stage will be delivered on power transmission shaft and the drive plate, but this moment, handle and handle set did not have the external force effect, second bearing pin that is assemblied on the handle set can not promote roller disengaging inclined-plane, the moment that passes to drive plate can only make the inclined-plane fit the inwall of roller and overcoat better, roller stops the drive plate rotation by the reaction force on inclined-plane simultaneously, realizes real self-locking.