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Hydrostatic type travel driving device of all-wheel drive working machine

A drive device, all-wheel drive technology, applied in the direction of transmission control, mechanical equipment, components with teeth, etc., to achieve the effect of simple structure, high driving comfort, reduced manufacturing costs and space requirements

Active Publication Date: 2014-11-19
LINDE HYDRAULICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All-wheel drive can be switched on to the first drive axle in the second gear of the shift transmission (transport driving range), but only before reaching the limit driving speed, at which speed the drive of the second drive axle is reached The limit speed of the two hydraulic motors

Method used

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  • Hydrostatic type travel driving device of all-wheel drive working machine
  • Hydrostatic type travel driving device of all-wheel drive working machine
  • Hydrostatic type travel driving device of all-wheel drive working machine

Examples

Experimental program
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Effect test

Embodiment Construction

[0065] exist figure 1 A block diagram of a hydrostatic traction drive 1 according to the invention of an all-wheel drive working machine, for example a harvester, is shown in .

[0066] The all-wheel drive working machine comprises a first drive axle 2, for example a front axle, with driven wheels 3a, 3b, and a second drive axle 4, for example a rear axle, with driven rear wheels 5a, 5b . The drive shaft 4 can be designed as a steering axle with steerable wheels 5a, 5b. The wheels 3a, 3b or 5a, 5b can be configured as driven front and rear tires. Alternatively, the driven wheels 3 a , 3 b or 5 a , 5 b can be configured as crawlers, the displacement mechanism of which corresponds to the driven wheels 3 a , 3 b and 5 a , 5 b.

[0067] The traction drive 1 comprises a hydrostatic transmission 6 for the first transaxle 2 , which has a first hydraulic pump 7 with an adjustable delivery volume and a first hydraulic motor 8 connected to the hydraulic pump 7 . The hydraulic pump ...

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PUM

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Abstract

The invention relates to a hydrostatic type travel driving device (1) of an all-wheel drive working machine. The working machine is provided with a first drive axle (2) and a second drive axle (4). A travel driving device body used for driving the first drive axle (2) comprises a first hydraulic motor (8) connected with a first gear shifting transmission (11). A travel driving device body used for driving the second drive axle (4) comprises a second hydraulic motor (17) connected with a second gear shifting transmission (19). All-wheel drive can be stopped or started through gear shifting of the second gear shifting transmission (19). The hydrostatic type travel driving device aims at achieving gear shifting of the gear shifting transmission on the first drive axle and start-stop of all-wheel drive of the second drive axle in the mode that traction force is not interrupted in the traveling process. The gear shifting process, used for starting or stopping all-wheel drive, of the second gear shifting transmission (19) and the gear shifting process of the first gear shifting transmission (11) are not carried out at the same time, so that the second gear shifting transmission (19) transmits traction force in the gear shifting process of the first gear shifting transmission (11). In order to stop all-wheel drive in the traveling process, the second gear shifting transmission (19) is converted to be with no load. In order to start all-wheel drive in the traveling process, electrical and hydraulic synchronization of the rotating speed of the second hydraulic motor (17) is achieved.

Description

technical field [0001] The invention relates to a hydrostatic travel drive of an all-wheel drive working machine, which has at least a first drive axle and a second drive axle, wherein the drive drive for driving the first drive axle comprises A first hydraulic motor of a hydrostatic transmission, wherein the drive shaft of the first hydraulic motor is connected to a first mechanically shiftable transmission shiftable between at least two gear stages and a neutral position for driving a second drive The traction drive of the axle comprises a second hydraulic motor of the hydrostatic transmission, wherein the drive shaft of the second hydraulic motor is connected to a second mechanically shiftable transmission which can be shifted between at least one gear stage and a neutral position, wherein The all-wheel drive of the second transaxle can be switched off by shifting the second gearshift transmission into the neutral position, and the all-wheel drive can be switched on by shif...

Claims

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Application Information

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IPC IPC(8): F16H61/462F16H61/47
CPCF16H61/462F16H61/47
Inventor A·朗根D·德尔
Owner LINDE HYDRAULICS
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