Loader and integrated hinge mechanism thereof

Abstract

The invention discloses a loader and an integrated hinge mechanism thereof, and belongs to the technical field of loaders. According to the loader and the integrated hinge mechanism thereof, a front-rear frame hinge mechanism of the loader is divided into independent modules which are subjected to local reinforcement design, and then the independent modules are welded together with a frame body, so that the increment of the weight of a frame is minimized; meanwhile, based on matched installation of a redesigned front hinge mechanism and a redesigned rear hinge mechanism, and integration of thefunctions such as active steering of the frame, steering limiting, oil cylinder installation support and locking of front and rear frames can be realized, so that mechanism arrangement is more compact, and a larger maintenance space is reserved for a hinge portion; furthermore, the center face of an upper hinge plate integrated with a steering hinge point and the center of a front drive axle arelocated on a same horizontal plane, so that generation of a steering biasing torque is avoided, bearing working conditions of the frame is relieved, and steering force transmission is more scientificand efficient; and in addition, the steering limiting function integrated in the hinge mechanisms is achieved by utilizing a hinge mechanism body to share the steering limiting impact force, and therefore the steering limit fatigue strength can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of loaders, in particular to a front and rear frame integrated hinge mechanism. Background technique [0002] The layout of the hinge mechanism of the front and rear frame of the existing wheel loader is generally such that the hinge plate is directly connected with the frame plate of the frame body and reinforced by some reinforcement plates. This arrangement will cause poor internal welding processability and the welding strength cannot be guaranteed. During the use of a loader, with frequent steering operations, the hinge mechanism frequently bears various bending moments, which easily leads to fatigue cracking, which becomes a weak point in the frame system and affects the safety of the vehicle; [0003] At the same time, due to the complex operating conditions of the loader, there is currently no more accurate load spectrum analysis model in the industry. Therefore, the common method for the reinforceme...

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Problems solved by technology

[0002] The layout of the hinge mechanism of the front and rear frame of the existing wheel loader is generally such that the hinge plate is directly connected with the frame plate of the frame body and reinforced by some reinforcement plates. This arrangement will cause poor internal welding processability and the welding strength cannot be guaranteed. During the use of a loader, with frequent steering operations, the hinge mechanism frequently bears various bending moments, which easily leads to fatigue cracking, which becomes a weak point in the frame system and affects the safety of the vehicle;

[0003] At the same time, due to the complex operating conditions of the loader, there is currently no more accurate load spectrum analysis model in the industry. Therefore, the common method for the reinforcement of the hinge mechanism is to increase the thickness of the frame frame and the hinge plate, and increase the number of ribs, thereby increasing The strength of the hinge mechanism, but this method will lead to an increase in the weight of the frame, and blindly increasing the plate thickness cannot effectively solve the problem of fatigue cracking of the hinge mechanism

[0004] In addition, the steering mechanism, steering limit mechanism, and frame locking mechanism of the existing wheel loader are poorly related to the hinge mechanism. Each mechanism has its own structural form, and the structural strength of each mechanism cannot be effectively guaranteed. At the same time, the structural layout is not compact enough. low utilization

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