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Land leveler, and gear shift control method and gear shift control system for land leveler

A technology for gear shift control and motor graders, which is applied to transmission control, mechanically driven excavators/dredgers, mechanical equipment, etc. It can solve problems such as short service life and easy wear of clutch friction plates, so as to improve service life, The effect of reducing loss and increasing the number

Active Publication Date: 2014-06-25
HUNAN SANY ROAD MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention proposes a gear shift control method for a grader to solve the problem that the clutch friction plate of the grader is easy to wear and has a short service life; in addition, the present invention also proposes a gear shift control system for a grader and Grader

Method used

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  • Land leveler, and gear shift control method and gear shift control system for land leveler
  • Land leveler, and gear shift control method and gear shift control system for land leveler
  • Land leveler, and gear shift control method and gear shift control system for land leveler

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Embodiment Construction

[0020] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The following will refer to the attached Figure 1-3 The present invention will be described in detail in combination with examples.

[0021] Such as image 3 As shown, a grader gear shift control system provided by a specific embodiment of the present invention, the grader gear shift control system includes a hydraulic pump 1, a hydraulic motor 2, a gearbox 3, a controller 4, a gear shifter 5 and a working mode Select the switch, the power transmission route of the motor grader is generally: the engine drives the hydraulic pump 1 to pump oil, the hydraulic pump 1 supplies oil to the hydraulic motor 2, and the hydraulic motor 2 is connected to the gearbox 3, that is: engine-hydraulic pump 1-hydraulic motor 2—gearbox 3; wherein, the gear shifter 5 and the working mode selection switch are connected to the con...

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Abstract

The invention discloses a gear shift control method for a land leveler. The gear shift control method includes starting an engine; judging a working mode to determine whether the land leveler is in a travel mode or an operation mode and selecting a corresponding gear of a gearbox according to different working modes; monitoring operation, and specifically, monitoring the working mode of the land leveler in a land leveler working procedure; performing power gear shift, in other words, actuating power gear shift if the working mode does not change, or executing power gear shift if the working mode changes. The gear shift control method has the advantages that gear shift is only carried out on the gearbox when the working mode changes, so that the gear shift frequency of the land leveler in the working procedure can be reduced, loss of friction plates of a clutch in the gearbox can be decreased, the service lives of the friction plates can be prolonged, the number of actual gears can be increased, and requirements of large quantities of working conditions can be met. The invention further provides the land leveler and a gear shift control system for the land leveler.

Description

technical field [0001] The invention relates to the field of engineering machinery power control, in particular to a gear shift control method and system for a grader and a grader. Background technique [0002] At present, the power transmission process of the hydromechanical transmission system is generally as follows: the engine provides the power source for the hydraulic pump, the hydraulic pump drives the hydraulic motor to rotate, the hydraulic motor is connected to the input shaft of the gearbox, and the output shaft of the gearbox drives the drive axle. The driving wheel rotates; in the process of power transmission, gears need to be switched according to the actual working conditions. Taking the grader as an example, the working conditions of the grader are more complicated, which may involve raking, bulldozing, shoveling and shoveling For snow and other operations, various working conditions have to correspond to different driving speeds, so frequent mechanical gear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H59/02E02F3/76E02F3/84
CPCE02F3/84F16H61/0204
Inventor 林涛李小锋杜建军
Owner HUNAN SANY ROAD MACHINERY
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