Tractor frame and traveling wheel system

Abstract

The invention relates to the technical field of tractors, in particular to a tractor frame and a traveling wheel system. The tractor frame comprises a front supporting cross beam and a rear supportingcross beam which are disposed opposite to each other. Side supporting longitudinal beams are fixed between the left end of the front supporting cross beam and the left end of the rear supporting cross beam and between the right end of the front supporting cross beam and the right end of the rear supporting cross beam. The intermediate portion of the front supporting cross beam is arched upwards,and the intermediate portion of the rear supporting cross beam is arched upwards. The side supporting longitudinal beams include main supporting beams, front oblique beams and rear oblique beams, wherein the main supporting beams extend forwards and backwards in a linear mode, the front oblique beams extending obliquely forwards and downwards are fixed to the front ends of the main supporting beams and used for mounting tensioning wheels, and the rear oblique beams extending obliquely backwards and downwards are fixed to the rear ends of the main supporting beams and used for mounting fixed wheels. The structure is more stable, an operator is more comfortable to use, and the operation is more cheerful.

Description

technical field [0001] The invention relates to the technical field of tractors, in particular to a tractor frame and a road wheel system. Background technique [0002] Existing crawler tractors have been widely used, but in fact, there are still many deficiencies, for example, in terms of the frame: the front and rear beams are directly connected, the vibration is large, the frame is easy to crack, and the operation is easy to fatigue; the support beam directly Opening holes to connect supporting rollers reduces the load-bearing capacity, insufficient support beam strength, and poor reliability; the structure is complex and the cost is high. The reason is that strong vibrations will occur when the tractor is powered, the tractor is transferred, and the working parts are operated. Vibration causes frame fatigue cracks, strength decline, and frame failure; direct-connected frame vibration causes vibration of the whole machine, operators are prone to fatigue, and even causes o...

AI Technical Summary

Problems solved by technology

[0002] Existing crawler tractors have been widely used, but in fact, there are still many deficiencies, for example, in terms of the frame: the front and rear beams are directly connected, the vibration is large, the frame is easy to crack, and the operation is easy to fatigue; the support beam directly Opening holes to connect supporting rollers reduces the load-bearing capacity, insufficient support beam strength, and poor reliability; the structure is complex and the cost is high. The reason is that strong vibrations will occur when the tractor is powered, the tractor is transferred, and the working parts are operated. Vibration causes frame fatigue cracks, strength decline, and frame failure; direct-connected frame vibration causes vibration of the whole machine, operators are prone to fatigue, and even causes operator disease. In order to increase strength, many reinforcing ribs are added, and the structure is complicated. The cost increases, for example, in terms of the road wheel system: when encountering uneven roads during driving, the center of gravity of the whole machine also fluctuates up and down with the road surface, the machine vibrates severely when bumping up and down, the machine is easy to be damaged, and the operation is easy to fatigue; The machine will be jacked up, the attached area of ​​the track belt is small, the traction force is reduced, and the machine is difficult to overcome obstacles; it will jump intermittently when turning; it is easy to drop the track. The reason is that the prior art rollers are fixed or one group is floating. , the center of gravity of the machine fluctuates greatly during operation, and the machine will pass through forcibly when encountering an obstacle, causing great shock and vibration; when encountering a relatively large obstacle, the whole machine will be jacked up, the machine will be suspended in the air, the ground contact area of ​​the track will be reduced, and the traction force will decrease; deep mud feet When turning sharply, the guide iron crosses the track teeth, causing the track to derail and fall out

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