Suspension device and straddle carrier

Abstract

The invention provides a suspension device and a straddle carrier. The suspension device comprises a suspension shaft, a joint bearing, a buffer block assembly and a buffer block top cover. The lowerend of the suspension shaft is fixedly connected with a wheel frame, and the suspension shaft rotates along with steering of wheels; the lower end of the joint bearing is fixedly connected with the upper end of the suspension shaft; the upper end of the joint bearing is fixedly connected with the buffer block assembly; the buffer block top cover is provided with an inner cavity with a downward opening, the buffer block assembly is arranged in the inner cavity, and the buffer block top cover is fixedly connected to a frame. The invention further provides the straddle carrier including the suspension device. According to the suspension device, the vertical vibration is buffered through the buffer block assembly, the design stroke is short, the buffer block assembly is connected with the joint bearing, the device cannot be subjected to horizontal load and rotational load, the buffer block assembly cannot be deformed, abraded and shifted, and the service life of the suspension device is prolonged.

Description

technical field [0001] The invention relates to the field of vehicle suspension systems, in particular to a suspension device and a straddle carrier. Background technique [0002] Straddle carriers play a very important role in the horizontal transportation of port containers, whether they are driven manually or automatically. At present, more than 4,000 straddle carriers are used in global ports. With the development of automation technology and the rise of automated ports, the number of intelligent straddle carriers will gradually increase. The suspension is a very important component on a straddle carrier. [0003] Suspension device is the general term for all force transmission connection devices between the wheel and the body, its function is to transmit the force and moment acting between the wheel and the body, and buffer the impact force transmitted from the uneven road to the frame or body, and attenuate The vibration caused by this will ensure the smooth running ...

AI Technical Summary

Problems solved by technology

However, the spring structure is generally complex and heavy, and the shock absorption principle in the form of damping accumulation leads to a long design stroke and a large deformation range; and when the lateral load or rotational load is too large, it is prone to complete deformation and cannot rebound, so it is not suitable for use. Straddle carrier for horizontal transport of container in port

[0004] In addition, generally speaking, in addition to bearing the weight load of the vehicle in the vertical direction, the cushioning assembly in the prior art also needs to bear the load in the horizontal direction when the vehicle starts, accelerates, decelerates or stops, and the cushioning device when the wheels turn Under the action of rotating load, it will also be torsion

Over time, these loads can deform, wear, or misalign cushioning components, ultimately reducing the life of the suspension

Images