Gear control method and system for automatic gearbox of loader

A technology of automatic shifting and control method, which is applied in the direction of transmission control, mechanical equipment, components with teeth, etc., can solve the problems of repeated up-down and down-shift, achieve the effect of stable gear position and solve the problem of repeated up-down and down-shift.

Active Publication Date: 2020-10-27
JIANGSU ADVANCED CONSTR MASCH INNOVATION CENT LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose: In order to overcome the deficiencies in the prior art, the present invention provides a loader automatic transmission gear control method

Method used

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  • Gear control method and system for automatic gearbox of loader
  • Gear control method and system for automatic gearbox of loader
  • Gear control method and system for automatic gearbox of loader

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 As shown, a loader automatic transmission gear control method, including:

[0037] When the loader is in the climbing condition and the shift mode switch is selected as the automatic shift mode, obtain the gear change information of the gearbox;

[0038] In response to meeting the preset condition N in the upshift strategy table Kup , the gearbox is upshifted, the gearbox is upshifted from the current gear K to K+1 gear, the gear information of the K gear before the upshift and the K+1 gear after the upshift is recorded, and an instruction is issued to control the downshift strategy table The preset condition N of the original downshift from K+1 to K K+1Down Increase or decrease Δm, adjust to N K+1Down +Δm or N K+1Down -Δm, making it more difficult to downshift from K+1 to K;

[0039] Or, in response to meeting the preset condition N in the downshift strategy table KDown , the gearbox is downshifted, the gearbox is downshifted from the current gea...

Embodiment 2

[0058] Such as figure 2 As shown, a loader automatic transmission gear control system includes a controller, the controller includes a memory and a processor, the memory is used to store instructions, and the instructions are used to control the processor to operate to execute The above-mentioned gear control method of the automatic transmission of the loader.

[0059] In some embodiments, the memory also stores a shift strategy table, including a downshift strategy table and an upshift strategy table.

[0060] In some embodiments, the gear control system of the loader automatic transmission further includes: a transmission control unit, a shift mode switch, a vehicle state monitoring module, a gear execution unit; a transmission control unit, a shift mode The switch, the vehicle status monitoring module, and the gear execution unit are all connected to the controller,

[0061] The gearbox control unit is used to collect the operation signal of the whole machine and the sig...

Embodiment 3

[0063] A loader, comprising the above-mentioned gear control system of the automatic transmission of the loader.

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PUM

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Abstract

The invention discloses a gear control method and system for an automatic gearbox of a loader. The method comprises the steps of increasing or decreasing delta n on an upshift preset condition betweentwo gears before and after downshift when the loader climbs and downshifts in an automatic gear shifting mode of the gearbox, so that the upshift is more difficult after downshift; and meanwhile, after the gearbox is automatically upshifted, the downshifting preset condition between the front upshifting gear and the rear upshifting gear is increased or decreased by delta m, and downshifting is more difficult after upshifting. According to the method, the gear information before and after gear shifting is recorded, and the gear shifting strategy is adjusted, so that the gear is more stable when the loader climbs a slope, and the problem of repeated upshifting and downshifting is solved.

Description

technical field [0001] The invention belongs to the technical field of engineering machinery, and relates to a gear control method and system for an automatic transmission of a loader. Background technique [0002] Loader is a widely used construction machinery, mainly engaged in material shoveling and loading and transportation operations. When the loader climbs at high speed at high speed, the climbing resistance increases rapidly due to the heavy weight of the whole machine, and the high gear is not enough to provide a large traction force to meet the climbing demand, so the vehicle speed drops quickly, and the gearbox performs automatic downshifting To operate, increase traction by downshifting. Due to the large traction force of the low gear, it can completely overcome the climbing resistance, so that the speed of the vehicle gradually increases after the downshift, and when the upshift condition is reached, the gearbox performs an upshift operation. After upshifting,...

Claims

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Application Information

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IPC IPC(8): F16H61/02
CPCF16H61/0213F16H2061/0223F16H2061/0227
Inventor 刘彦辉张昭东赵文祥
Owner JIANGSU ADVANCED CONSTR MASCH INNOVATION CENT LTD
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