Oilless compressor with fork arm type rotating limiting mechanism
The invention belongs to the technical field of compressors and relates to an oilless compressor with a fork arm type rotating limiting mechanism. Rocker arms of the rotating limiting mechanism are of a double-arm structure with fork-shaped arrangement. Two fork arms of the rocker arms are arranged on the two sides of a driving shaft axis. Each fork arm is provided with a swinging disc pin and a swinging disc which are connected in a matched mode. When the swinging disc is under the action force transmitted through a connecting rod and generates a rotating trend around the driving shaft axis, the two fork arms of the rocker arms bear action force which is opposite in direction and is derived by the swinging disc respectively, the pair of action force is transmitted to a force bearing point of a shaft box pin in a torque-feedback mode, accordingly, cyclical impact on a shaft box from the shaft box pin along the axis of the shaft box pin can be relieved or even removed, in addition, overall action force (or moment) derived by the swinging disc is shared by the two fork arms, namely bending moment on the shaft box pin force bearing point, namely the root portion of each fork arm is greatly lowered, accordingly, the capacity for resisting fatigue rupture of the rotating limiting mechanism can be improved, and noise is lowered. 1. A kind of wishbone rotation limiting mechanism has the oil-free compressor, includes a piston, connecting rod, the axle box, in which the drive shaft and the swing plate, the drive shaft is provided with an oblique shaft or the drive plate, the oblique shaft or drive by states suspends the plate disk drive, in addition is provided with a control disc-swing around the drive feeling of the amplitude of the rotation angle of the axle mechanism, the rotation limiting mechanism comprises a pendulum the plate sells , rocker arm and the axle box pin, one end of the the states suspends the plate to sell connected with a rocker arm, one end of the pendulum plate and the other of the pin is connected with the pendulum, the one end of the pin states the axle-box connected with a rocker arm, the other end of the axle box pin connected with the axle, the rocker arm can be rotated around the axle box pin axis, pendulum pin can rotate around the pendulum axis of rotation, characterized in that the limit rotating mechanism of the rocker arm is fork-shaped layout of the double-arm structure, the two supporting forks the arm minute of the rocker arm is the axis of the drive shaft of the two side, each of them are configured on a fork arm of the pendulum with the pendulum plate pin mating. 2. A kind of wishbone rotation limiting mechanism has the oil-free compressor according to Claim 1, characterized in that the two fork arms of the rocker arm is disposed on the pendulum layout arranged in a concentric pin axis. 3. A kind of wishbone rotation limiting mechanism has the oil-free compressor according to Claim 2, characterized in that the axle states suspends the plate pin axis with the pin axis is coplanar layout. 4. A kind of wishbone rotation limiting mechanism has the oil-free compressor according to Claim 3, characterized in that the axle states suspends the plate pin axis with the pin axis in a vertical layout. 5. A kind of wishbone rotation limiting mechanism has the oil-free compressor according to Claim 4, characterized in that the axle with the driving axle pin axis is vertical layout is crossed. 6. A kind of wishbone rotation limiting mechanism has the oil-free compressor according to Claim 5, characterized in that pin axis of the pendulum, pin axis of the axle box, the axis of the drive shaft are converged, the pendulum and the other the fixed point coincides with the working plane of the; pin axis or the pendulum, pin axis of the axle box, the axis of the slanting converged, the pendulum and the other the fixed point coincides with the working plane. 7. Any kind of wishbone rotation limiting mechanism has the oil-free compressor according to Claim 1 to 6, characterized in that the piston and the connecting rod fastening connection or into a whole structure, said connecting rod is hinged with the pendulum is connected with the ball. 8. A kind of wishbone rotation limiting mechanism has the oil-free compressor according to Claim 7, characterized in that the pin of the axle box structure of the ball pin, and is arranged on the axle with the poroid slideway. 9. A kind of wishbone rotation limiting mechanism has the oil-free compressor according to Claim 7, characterized in that the ball head pin as states the axle-box pin structure, and with the ball and the slide block is, the sliding block and the axle box is matched with poroid slideway. 10. A kind of wishbone rotation limiting mechanism has the oil-free compressor according to Claim 7, characterized in that the at least one pin states suspends the plate end of the pendulum is connected with a ball-head contact.