Vehicle gear shifting control system, driving gear shifting control method and loading machine

A technology of a control system and a control method, which is applied in the field of vehicle gear shifting, can solve the problems such as the inability to realize driving gear shifting, and achieve the effect of ensuring vehicle speed.

Active Publication Date: 2019-02-22
WEICHAI POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a vehicle gear shift control system, a driving gear shift control method and a loader, which can solve the problem that the existing vehicle hydraulic drive mechanism cannot realize driving gear shifting

Method used

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  • Vehicle gear shifting control system, driving gear shifting control method and loading machine
  • Vehicle gear shifting control system, driving gear shifting control method and loading machine
  • Vehicle gear shifting control system, driving gear shifting control method and loading machine

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Embodiment Construction

[0036] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0037] Such as figure 1 As shown, this embodiment provides a vehicle gear shift control system, which is mainly applied to hydrostatic loaders. By coordinatingly controlling the clutch of the gearbox, the variable pump 1 and the displacement of the two motors, the vehicle speed can be changed smoothly, and the gear shift No power interruption during the process.

[0038] refer to figure 1 , the vehicle shift control system includes a variable pump 4, a plurality of motors driven by the variable pump 1 and a multi-speed gearbox, the gearbox includes a plurality of clutches, each motor driven by the variable pump 1 is connected to at least one clutch, connected to At most one of at least one clutch of the same motor is engaged. In this embodiment, there are two motors, respectively the first motor ...

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PUM

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Abstract

The invention relates to the field of vehicle gear shifting, and discloses a vehicle gear shifting control system, a driving gear shifting control method and a loading machine. The vehicle gear shifting control system comprises a variable pump, multiple motors and a multi-gear transmission. The motors are driven by the variable pump. The transmission comprises multiple clutches. Each motor drivenby the variable pump is connected with at least one clutch. At most one of the at least one clutch connected to the same motor is in the engaged state. According to the vehicle gear shifting control system, the driving gear shifting control method and the loading machine, when the gear of the transmission is adjusted, the clutch which needs to be adjusted to be in the engaged state from the disengaged state is engaged when the displacement of the motor driving rotation connection of the clutch is not equal to zero firstly, the clutch which needs to be adjusted to be in the disengaged state from the engaged state is then disengaged after the displacement of the motor driving the clutch to rotate is equal to zero, and therefore it is ensured that no power failure is caused in the gear shifting process, no impact on the vehicle speed is caused when the clutch is disengaged, and it is ensured that the vehicle speed of a whole vehicle is stably changed.

Description

technical field [0001] The invention relates to the field of vehicle gear shifting, in particular to a vehicle gear shifting control system, a driving gear shifting control method and a loader. Background technique [0002] There are mainly three types of gear shift control systems for existing loaders, namely a hydraulic torque converter transmission mechanism, a mechanical transmission mechanism and a hydrostatic drive mechanism. [0003] The shifting efficiency and reliability of driving shift control using a hydraulic torque converter transmission mechanism and a mechanical transmission mechanism are relatively low, so in the prior art, a hydrostatic drive mechanism is mostly used for driving shift control. However, most of the existing hydrostatic drive mechanisms use a clutch to cooperate with a two-speed gearbox to work, which cannot realize parking and shifting, and cannot guarantee that the power will not be interrupted during the shifting process, and the two-speed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/02
CPCF16H61/0262
Inventor 宋亚召许力杰赵金光陈岩
Owner WEICHAI POWER CO LTD
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