Wheel excavator hydraulic speed control system

Abstract

The invention discloses a wheel excavator hydraulic speed control system, aiming at solving the problem that when an oil pump needs to be subjected to overhaul, a shell, a hydraulic torque converter and a speed change mechanism need to be completely disassembled, so that the dismantling of the oil pump is more difficult. The wheel excavator hydraulic speed control system is characterized in that the system comprises a shell; the shell is internally provided with a hydraulic torque converter and a torque converter output assembly connected with the hydraulic torque converter in a transmission way; the hydraulic torque converter comprises a turbine, a guide wheel and a pump wheel; the torque converter output assembly comprises a turbine output assembly connected with the turbine in a transmission way, and a pump wheel connecting sleeve connected with the pump wheel in a transmission way; the turbine output assembly is connected with a speed change mechanism in a way of axial transmission, and an output end of the speed change mechanism extends out of the shell; a first output gear is fixedly arranged on the pump wheel connecting sleeve in a coaxial way; the first output gear is radially meshed with a pump seat, on which an oil pump is installed, by means of an idle gear; the pump seat comprises a first input gear which is meshed with the idle gear for driving the oil pump; the oil pump has the characteristic of being convenient to disassemble.

Description

technical field [0001] The invention relates to a transmission, in particular to a wheel excavation hydraulic transmission system. Background technique [0002] The tire excavator is a tire excavator driven by the axle. Compared with the traditional crawler excavator, it has the advantages of maneuverability, flexibility, and fast walking speed. It can realize long-distance self-transfer and save management and transportation costs. . It has been fully utilized in fields such as airports, municipal administration, gardens, urban and rural renovation, farmland water conservancy and rapid repairs. With the adjustment of China's economic structure, wheeled excavators will be more and more used in construction. [0003] The gearbox is one of the important transmission components of the excavator. It is responsible for transmitting the speed and torque from the engine to the final drive system, changing the transmission ratio between the engine and the wheels, realizing the for...

AI Technical Summary

Problems solved by technology

[0004] For example, an excavator hydraulic shifting system disclosed in a patent with the authorized announcement number CN105697711B includes a casing, a hydraulic torque converter, an oil pump, a speed change mechanism and a transfer case assembly, a hydraulic torque converter, an oil pump, The speed change mechanism and the transfer case assembly are both arranged in the box body, the output end of the hydraulic torque converter is connected with the input end of the speed change mechanism, and the output end of the speed change mechanism is connected with the input end of the transfer case assembly. Although the torque converter, transmission mechanism, oil pump and transfer case assembly share one box, the overall volume of the transmission and shifting system can be reduced, but the oil pump is located between the hydraulic torque converter and the transmission mechanism. When overhauling the oil pump, it is necessary to completely disassemble the casing, hydraulic torque converter and transmission mechanism, and it is difficult to remove the oil pump

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