In daily life, most of the tractors you see are wheeled, and crawler tractors are not so common. Orbitrol caterpillar are different from wheeled tractors. The crawler is supported on the ground by a coiled circular track. The vehicle has the characteristics of large grounding area, low grounding specific pressure, good adhesion performance, strong climbing ability, small turning radius, and strong ability to cross ridges, so it plays a very important role in agriculture, engineering construction, modern military and other fields. .
Under the action of the driving torque, the driving wheel continuously rolls the track from the rear through the engagement between the gear teeth on the driving wheel and the joint pin of the track shoe. The ground part of the track of the crawler tractor produces a reaction force on the ground, and the corresponding track produces a reaction force, and the reaction force is the driving force that pushes the tractor forward. The driving force of the wheeled tractor is directly transmitted to the traveling wheels, while the driving force of the crawler tractor is transmitted to the shaft of the driving wheel through the track winding on the driving wheel, and then the driving wheel shaft is transmitted to the driving wheel through the tractor body. When the driving force is sufficient to overcome the rolling friction and traction resistance of the agricultural implement, the support wheel rolls forward on the track surface, thereby driving the tractor forward. Since the drive wheel continuously rolls the track forward and then places it on the ground through the guide wheel, the support wheel can roll continuously on the track laid by the track. Therefore, the driving torque of the crawler tractor is realized by the interaction between the driving wheel and the ground, and the driving force is greater than the sum of rolling friction and traction resistance.
The maximum driving force of a crawler tractor is the same as that of a wheeled tractor. On the one hand, it depends on the capacity of the internal combustion engine, and on the other hand, it is limited by the adhesion of the crawler to the ground. Generally speaking, the greater the power of the tractor, the greater the driving force. There are many factors that affect adhesion. As far as the structure of the tractor itself is concerned, reasonable selection of the shape and size of the track and track, and increasing the load-bearing of the track within a certain limit can improve the adhesion and increase the traction of the tractor. The rolling resistance of a crawler tractor is formed by the deformation of the soil in the vertical direction and the mutual friction between the various parts of the driving system. Reducing rolling resistance increases tractor traction.
According to the working principle of the tracked vehicle, the technicians of Hanjiu Technology Co., Ltd. believe that compared with the mechanically driven walking system, the hydraulically driven walking system can greatly simplify the system structure, and can also realize various variable control methods, with a wide adjustment range. The adjustment characteristics are good, the low-speed stability is good, and the power density ratio is also high (about 3-5 times that of electric transmission and mechanical transmission). Of course, the advantages of the hydraulically driven walking system in the specific use process also need to be displayed with the accessories used in the system. Here we recommend that you choose the hydraulic products produced by Hanjiu Technology Company, whether it is a hydraulic pump, a hydraulic motor or a steering system. Their companies all have professional technology, and the products they produce are comparable in quality to those of internationally renowned brands, such as Eaton, Danfoss, etc., and on the basis of the same quality, they also have lower prices.
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