2results about How to "Avoid heavy load" patented technology

The utility model relates to mechanical design technical field discloses a high accuracy balance air conditioner engine crankshaft, including front end spindle neck, the front end spindle neck rear side fixedly connected with first connecting sleeve, first intermediate spindle neck is fixedly connected with first connecting sleeve rear portion, first intermediate spindle neck outside fixedly connected with front balance ring, first intermediate spindle neck left and right sides all fixedly connected with primary crank arm, primary crank arm inside fixedly connected with primary connecting rod axle neck, primary crank arm bottom fixedly connected with primary crank balance weight, the crank balance weight bottom fixedly connected with balance counterweight sliding block, first intermediate spindle neck rear portion fixedly connected with secondary crank assembly, the utility model discloses, this crankshaft passes through multiple spindle neck dispersion load, promotes the alternating complex load capacity, axle neck cover and lubrication structure stable gap, balance weight and adjusting screw optimization dynamic balance, reduce the failure risk greatly.

The utility model discloses a rail changing type lifting device which comprises a moving component, a lifting component and a lifting component. The moving component is provided with a moving motor located on a bottom plate, a driving shaft rotating on the bottom plate and a supporting sliding block moving on a first sliding rail. The output end of the moving motor is connected with one end of the driving shaft; the supporting main frame is fixedly mounted on the supporting sliding block, and a lug seat at the lower end is in threaded connection with the driving shaft; the lifting component is mounted on the supporting main frame and comprises a first chain, a second chain, a counterweight component and a supporting plate component which form a closed-loop structure; one end of the first chain is connected with the upper end of the supporting plate component, and the other end is connected with the upper end of the counterweight component after winding upwards; one end of the second chain is connected with the lower end of the supporting plate component, and the other end is connected with the lower end of the counterweight component after winding downwards. The rail-changing lifting device is simple in structure, rail-changing lifting of a plurality of conveying lines is achieved, staggered-layer lifting butt joint of the conveying lines with different heights is met, driving force used for lifting is effectively reduced, and the situation that the driving force load is too large due to the fact that the conveying lines are too heavy is avoided.