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Hydrostatic drive land leveller

A hydrostatic, grader technology, applied in the direction of earth mover/shovel, construction, etc., can solve the problems of low reliability coefficient, poor transmission performance, and easy failure of graders, so as to improve the operation and construction efficiency and production. The effect of high manufacturing cost and fast reverse speed

Inactive Publication Date: 2005-01-12
SANY HEAVY IND CO LTD (CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its long transmission line and many mechanical parts and components participating in the transmission, this kind of power transmission and speed change device results in complex structure, poor transmission performance, difficult maintenance, high manufacturing cost, unstable quality, and easy failure, which is the cause of motor graders. One of the main factors of low reliability coefficient

Method used

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  • Hydrostatic drive land leveller
  • Hydrostatic drive land leveller

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Experimental program
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Embodiment Construction

[0009] see figure 1 , the variable hydraulic pump 2 in the hydrostatic transmission system is connected to the engine 1 through a coupling 11, and the output shafts of the first variable hydraulic motor 3 and the second variable hydraulic motor 6 communicated with the variable hydraulic pump 2 are respectively connected to the The input shaft of the first deceleration balance box 4 and the second deceleration balance box 7 is connected in drive, the output shaft of the first deceleration balance box 4 is in transmission connection with the first part of wheels 5,9, and the second deceleration balance box 7 The output shaft of the output shaft is connected with the transmission of the second part wheels 8,10.

[0010] The walking power transmission route of the present invention is: engine 1→coupling 11→variable plunger hydraulic pump 2→first variable plunger hydraulic motor 3 and second variable plunger hydraulic motor 6→first deceleration balance box 4 and second variable plu...

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Abstract

The invention discloses a static hydraulic-transmission land leveller. The variable hydraulic pump in the static hydraulic-transmission system is transmission-linked with the engine by the coupling, the outupt axes of variable hydraulic motors are respectively transmission-linked with the input axes of deceleration balance boxes and the outer axes said boxes are respectively transmission-linked with the wheels. It has advantages of simple construction, reliable transmission and speed changing and low cost and so on.

Description

Technical field: [0001] The invention relates to an engineering machine, which is characterized in that it relates to a hydrostatic transmission grader. Background technique: [0002] In the prior art, the power transmission route of the motor grader is: engine→hydraulic torque converter (or clutch)→gearbox→transmission shaft→drive axle→balance box→wheels, and the grader is controlled by changing the gear position of the gearbox The direction of travel of the machine (forward or reverse) and the speed of the vehicle can be changed. The differential installed in the drive axle and the symmetrical transmission mechanism on both sides of the main drive are used to realize the synchronization of the differential speed of the driving wheels on both sides of the motor grader when it is turning and when it is going straight. Due to its long transmission line and many mechanical parts and components participating in the transmission, this kind of power transmission and speed change...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02F3/85
Inventor 易晓刚于庆达李兵成胡奇易迪升彭国成胡宏秋
Owner SANY HEAVY IND CO LTD (CN)