Method for shifting gears of transmission device gear-shifting transmission capable of being switched between at least two transmission levels

A transmission and transmission technology, applied in transmission control, elements with teeth, belts/chains/gears, etc., can solve problems such as increasing manufacturing costs, and achieve the effect of small manufacturing costs

Active Publication Date: 2014-11-12
LINDE HYDRAULICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the structure of the shift transmission...

Method used

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  • Method for shifting gears of transmission device gear-shifting transmission capable of being switched between at least two transmission levels
  • Method for shifting gears of transmission device gear-shifting transmission capable of being switched between at least two transmission levels
  • Method for shifting gears of transmission device gear-shifting transmission capable of being switched between at least two transmission levels

Examples

Experimental program
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Embodiment Construction

[0048] exist figure 1 A circuit diagram of an inventive transmission 1 of a working machine, for example an excavator, is shown in .

[0049] The chassis 1 comprises a hydrostatic transmission in an open circuit, which has a pump 2 with an adjustable fluid intake per revolution and a hydraulic motor 3 connected to the pump 2 in an open circuit. For driving, the pump 2 is connected to a drive motor 4 , for example an internal combustion engine. The pump 2 is connected at the input to a container 5 and delivers pressure medium into a delivery line 6 . In order to control the movement direction and movement speed of the hydraulic motor 3, a control reversing valve 7 limited in neutral is designed. The control directional control valve 7 is connected to the delivery line 6 , a container line 8 leading to the container 5 and a first pressure medium line 9 a leading to the hydraulic motor 3 and a second pressure medium line leading to the hydraulic motor 3 On line 9b. The contro...

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Abstract

The invention relates to a method for shifting gears of a transmission device gear-shifting transmission capable of being switched between at least two transmission levels. A transmission device is driven by a hydrostatic transmission; in order to shift the gears of the gear-shifting transmission between the transmission levels, the method comprises the steps as follows: Step 1, unloading the gear-shifting transmission: changing the input quantity and/or the liquid inlet quantity per revolution of a hydraulic motor until the pressure difference on the hydraulic motor is lower than the preset pressure difference, or over-regulating a brake valve device to an opening position for stopping a brake valve function; Step 2, shifting the gear-shifting transmission into a neutral gear; Step 3, performing electric-hydraulic synchronization on the revolving speed of the hydraulic motor; Step 4, shifting the gear-shifting transmission into a new transmission level; Step 5, applying a load to the gear-shifting transmission.

Description

technical field [0001] The invention relates to a method for shifting gears of a transmission driven by a hydrostatic transmission, which can be switched between at least two transmission stages, wherein the hydrostatic transmission is composed of a transmission volume adjustable The pump consists of a hydraulic motor connected to the pump in an open circuit. The hydraulic motor is drivably connected to an input shaft of the transmission. Here, a control reversing valve is designed to control the hydraulic motor. It is connected to a delivery pipe of the pump. The pipeline is connected with a container pipeline leading to a container and a first pressure medium pipeline leading to the hydraulic motor and a second pressure medium pipeline leading to the hydraulic motor, and is located between the control valve and the hydraulic motor A brake valve device is arranged in the pressure medium line between them. Background technique [0002] Mobile self-propelled work machines, i...

Claims

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Application Information

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IPC IPC(8): F16H59/02
CPCF16H61/30
Inventor A·朗根
Owner LINDE HYDRAULICS
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