bent tractor

Abstract

The invention discloses a bowing tractor which comprises an engine, a belt, a clutch, a chassis, a transmission mechanism, a rear drive chassis bracket, a carriage, a front drive chassis bracket and a bowing steering traction head assembly, wherein the engine is directly connected with the clutch through the belt, and the carriage is arranged on the chassis. The bowing tractor is characterized in that the clutch is provided with a clutch speed changing box capable of changing the speed, the transmission mechanism comprises a power connecting shaft, a downlink transmission box, an uplink transmission box, a speed changing box, a front drive distribution box, a rear drive distribution box and a rear drive clutch box; and the traction head assembly is reversely arranged. The bowing tractor has the characteristics of stable chassis, multiple loads, high efficiency, simple structure, large driving space, comfort and safety in operation, stable and reliable operation, flexibility in steering, and the like.

Description

technical field [0001] The invention relates to an agricultural machine, in particular to a folding tractor with simple structure and flexible steering. Background technique [0002] Walking tractors occupy a very important position in my country's agricultural machinery market, especially the advent of industrial and agricultural-type 12 walking tractors, which are used for short-distance transportation most of the time except for farmland operations during busy farming seasons. One of the main means of transportation. However, walking tractors have disadvantages such as low speed, high fuel consumption, and poor steering control safety during transportation. Therefore, since the 1980s, various tractor factories have successively developed tractors that are bent and turned on the basis of walking tractors. These folding tractors are welcomed by the majority of users for their small size, flexible steering, wide adaptability, high transportation efficiency, and fuel saving. ...

AI Technical Summary

Problems solved by technology

[0003] But after the inventor's market research, it is found that there are still some defects in the folding tractors on the market at present. Their common shortcomings are: the front of the car is too long, the chassis is low from the ground, the operation is complicated, the passing ability is poor, and the center of gravity of the front tires is generated when turning. Severe edge running, poor safety performance, large internal friction, low drive shaft clearance from the ground, and low operating efficiency

Since all tractors are low at the front and high at the rear, an oblique angle will be generated when turning. When walking on uneven roads, it will automatically pull the direction, and the waist will sink. When turning, the center of gravity will be biased towards the right front wheel when turning left Turning to the right, the center of gravity is biased towards the left front wheel, and the head is lowered from the ground at the same time; therefore, many accidents occur because of this

In addition, traditional tractors try to lower the transmission shaft and raise the cab so that the rear drive transmission shaft does not touch the cab, so that the chassis and transmission shaft are lower than the ground.

As a result, the overall performance of the tractor is not stable, the load capacity is not high, the efficiency is low, the safety performance is poor, and the use is greatly restricted; especially when running in fields, forests and undulating roads, it will cause the drive shaft to hit the top of the road or get entangled Crops, weeds, etc. have seriously affected the normal operation of the tractor; the second is that the traditional transmission system is decelerated when it is driven to the gearbox at high speed, and the rear drive part should be equipped with a clutch box at the output connection of the front drive chassis. The speed has another gearbox, the structure is very complicated and the cost is high

In addition, the traditional gearbox is basically the transformation of the Gongnong-12 chassis, which is very different from the current use; third, when using the front and rear drive of the traditional tractor, the front drive box should be in gear, and then the rear drive clutch box should be connected. It can only be operated with the speed of the rear-drive gearbox, and the gear-shifting is very complicated; the gear-shifting systems of the front-drive and rear-drive clutch boxes are indirect shifting, and the reliability is poor.

In addition, steering gear, straight pull rod, hydraulic tipping bucket, rear drive gearbox and other control components are all installed in the cab, which takes up a lot of space and affects the safety of the driver's operation. Fourth, the traditional power transmission shaft and the front drive transmission shaft are both Directly connected, the front axle and the gearbox are integrated on the front-drive chassis, and the traction shaft on the rear-drive chassis forms an inclination angle and the center of gravity runs sideways as long as it turns, which affects power transmission and energy consumption. At the same time, it makes a lot of noise. Accelerated shaft wear

As a result, the use range of the tractor is small, the performance is poor, the controllability is unsafe, and the cost is high; especially in mountainous or hilly swampy areas, where the ground is uneven and the road conditions are harsh, the front wheels of the tractor will be caused by beating and the center of gravity running sideways. Twisting, idling, loss of balance, and even lead to excessive turning and rollover accidents; or the front of the car is too long to choose the road

Therefore, the above defects have become the technical bottleneck of turning to the tractor industry

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