A super-high-power bulldozer

Abstract

The invention discloses a bulldozer with ultrahigh horsepower. The bulldozer comprises a main frame (1) and an engine system arranged on the main frame (1), wherein two engines are arranged inside the engine system, and are used for driving the corresponding walking mechanisms of the bulldozer with ultrahigh horsepower through transmission mechanisms which are connected with the engine respectively. The walking power for the walking mechanisms of the bulldozer is provided by at least two engines with the transmission mechanisms matched therewith; each engine controls different walking mechanisms through corresponding transmission mechanisms, so as to complete the movement of the whole bulldozer; in this manner, the transmission power is within the rated range of power of work of the current transmission parts (the gear box, central transmission), the design difficulty of the transmission part is lowered, the realization of the design scheme of bulldozer with ultrahigh horsepower is facilitated, wider using requirement is satisfied, and the using cost is lower.

Description

technical field [0001] The invention relates to the technical field of shoveling machinery vehicles, in particular to a bulldozer with super high horsepower. Background technique [0002] Bulldozer is a typical earth-rock engineering machinery, which is widely used in road, railway, construction, port and other construction projects. With the acceleration of road construction, mining and other large-scale engineering construction, the market demand for high-horsepower or even super-high-horsepower bulldozers is increasing. more and more. [0003] However, the greater the power, the higher the requirements for the components in the bulldozer, especially for the clutch in the gearbox and central transmission. These components often use friction plates to transmit torque. When the torque to be transmitted is large , can only meet the requirements by increasing the number of friction plates, increasing the effective area of ​​friction plates, and increasing the pressure on the ...

AI Technical Summary

Problems solved by technology

[0004] a) When the number of friction plates is too large, it will inevitably lead to an increase in the axial length of the components and an excessive length of the whole machine

For ultra-high-power bulldozers, the overlong length of the whole machine will reduce the stability of the vehicle and the adhesion ability on uneven ground. At the same time, the overlong length of the whole machine will also put forward higher requirements for the strength of the main frame and other cantilever beams.

Therefore, increasing the number of friction surfaces to increase the capacity of the friction clutch will have a certain impact on the overall layout of the whole machine

[0005] b) Generally speaking, the maximum allowable linear speed of the friction plate does not exceed 70m / s, and most construction machinery uses high-speed diesel engines, and the speed of the clutch and the friction plate is relatively high in the high gear, so the maximum diameter of the friction plate is limited

At the same time, because the difference between the inner and outer diameters of the friction plate cannot be too large, otherwise the sliding speed will be very different, the inner and outer wear will be uneven, and the flatness of the friction plate will be damaged, resulting in poor contact and the ability to transmit torque. Therefore, the friction plate is also limited. ratio of inner and outer diameters

[0006] The above factors limit the increase of the effective area of ​​the friction plate. At the same time, since the friction plate generally adopts the production process of sintering metal friction materials on the steel layer, if the diameter of the friction plate is too large, the deformation and quality of the friction plate cannot be controlled, so the waste product Higher rates lead to higher production costs

[0007] In addition, in addition to the above-mentioned problems, in order to ensure the strength of the whole machine, any component on the super-high-power bulldozer must be designed and checked according to the working condition of the engine's maximum power, which also leads to the weight of the whole machine being too large, and it cannot work normally. The safety factor of the components involved in this case is relatively high, but its factor cannot be reduced to prepare for extreme working conditions

At the same time, the super-high-horsepower high-speed diesel engine used in bulldozers has high production costs and technical difficulties, which also restrict the production of super-high-horsepower bulldozers.

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