Power takeoff device for oppositely-arranged double hydraulic pumps of diesel engine

Abstract

The invention discloses a power takeoff device for oppositely-arranged double hydraulic pumps of a diesel engine. The power takeoff device comprises a hydraulic pump gear shaft, a hydraulic pump drive gear and a spline housing, wherein the hydraulic pump gear shaft is fixed to a gear chamber of the diesel engine, the hydraulic pump drive gear is provided with an internal spline and arranged on the hydraulic pump gear shaft in a sleeved mode after press fitting of a sliding bearing, the spline housing is provided with an internal spline and an external spline, and the external spline of the spline housing is meshed with the internal spline of the hydraulic pump drive gear. The hydraulic pumps can be oppositely connected to the two ends of the spline housing through a hydraulic pump installation hole in one end of the hydraulic pump gear shaft and a hydraulic pump installation hole in a gear chamber cover and meshed with the internal spline of the spline housing. The power takeoff device can achieve synchronous drive of the two hydraulic pumps, is simple in structure and convenient to install, and saves the space of the gear chamber of the diesel engine. In the use process, if one hydraulic pump goes wrong or is damaged, the hydraulic pump can be replaced independently, and therefore the maintenance cost is lowered.

Description

technical field [0001] The invention relates to a hydraulic pump power take-off device, in particular to an opposed double hydraulic pump power take-off device for a diesel engine. Background technique [0002] Machinery with diesel engines as the main power is generally equipped with hydraulic auxiliary devices, and some diesel engines need to arrange two or more sets of hydraulic pumps to provide hydraulic oil for the hydraulic auxiliary devices of the machinery. For example, some large and medium-sized wheeled tractors require the diesel engine to be equipped with two sets of hydraulic pumps, one set is used for the hydraulic auxiliary steering system of the tractor, and the other set is used for the hydraulic suspension device of the tractor. [0003] When a traditional diesel engine is arranged with two sets of hydraulic pumps, there are generally two options: one is to set up a power take-off device and install a double pump; the other is to set up two independent powe...

AI Technical Summary

Problems solved by technology

The disadvantages of these two structures are: 1. The structure of the double pump is complicated, the reliability is poor, and the manufacturing cost is high. After one set of hydraulic pumps is damaged, it needs to be replaced as a whole, and the maintenance cost is high; 2. The two sets of hydraulic pumps are independently arranged and driven independently. In this case, the two groups of hydraulic pumps need to design their own power take-off devices, the design of the diesel engine gear train is complex, and the diesel engine gear chamber and diesel engine compartment are required to have enough space

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