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Running drive device and road grader

A technology of driving device and driving wheel, which is applied in the direction of control device, mechanically driven excavator/dredger, motor vehicle, etc., can solve the problem that the speed regulation range cannot meet the grader, the synchronous operation performance of driving wheel is poor, and the transmission efficiency is low, etc. problems, to achieve the effect of increasing vehicle speed, reducing labor intensity and improving work efficiency

Active Publication Date: 2013-01-02
SANY HEAVY IND CO LTD (CN)
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The driving device with this structure, the hydrostatic transmission can realize stepless speed change, has a strong load self-adaptive ability, and is easy to operate, but the speed regulation range cannot meet the requirements of the motor grader’s operating speed range, that is, the speed regulation range is small, and The driving wheels on the left and right sides have poor synchronous operation performance, and the transmission efficiency is low under high-speed driving conditions

Method used

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  • Running drive device and road grader
  • Running drive device and road grader
  • Running drive device and road grader

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Embodiment Construction

[0037] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] Please see Figure 4 , Figure 4 It is a structural schematic diagram of a specific embodiment of the driving device provided by the present invention.

[0039] like Figure 4 As shown, the driving device provided by the present invention includes an engine 1 , a hydraulic pump 2 , a hydraulic motor 3 , a transmission balance box assembly 4 and a driving wheel 5 . The power output end of the engine 1 is connected to the power input end of the hydraulic pump 2. Specifically, the power output end of the engine 1 can be directly connected to the power input end of the hydraulic pump 2, or can be connected to the power input end of the hydraulic pump 2 through a coupling. The oil outlet of the hydraulic pump 2 is co...

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Abstract

Disclosed are a driving device and a grader using the same. The driving device comprises an engine (1), a hydraulic pump (2), hydraulic motors (3), drive wheels (5) and an assembly (4) of a speed change axle and balance boxes. The power input ends of the assembly (4) are connected to the power output ends of the hydraulic motors (3), and the power output ends of the assembly (4) are connected to the drive wheels (5). The driving device can realize continuously variable speed ratios within a certain range, and has certain load self-adaptability and large speed adjustment range. By utilizing mechanical synchro means, the left and right drive wheels have excellent synchronization performance.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a traveling drive device. The invention also relates to a motor grader with the aforementioned travel drive. Background technique [0002] A grader is a kind of engineering machinery that mainly uses a blade and is equipped with various other replaceable operating devices for land leveling and shaping. It is an important equipment in the construction of national defense projects, transportation, mines, and water conservancy infrastructure. [0003] At present, there are mainly three types of driving devices for motor graders: mechanical transmission, hydraulic mechanical transmission, and hydrostatic transmission. The following three situations will be introduced separately. [0004] Please see figure 1 , figure 1 It is a schematic diagram of the power transmission route of the mechanical transmission in the prior art. [0005] like figure 1 As shown, the driv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K17/00B60K17/04B60K17/10E02F3/85
CPCB60Y2200/411E02F3/84E02F9/202E02F9/2253B60K17/36
Inventor 易小刚林涛李建科
Owner SANY HEAVY IND CO LTD (CN)
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