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Bulldozer safety control method and control device, bulldozer

A technology for safety control and bulldozers, which is applied in the direction of earth movers/shovels, mechanically driven excavators/dredgers, construction, etc., and can solve the injuries of people or objects around, the accidental touch of the bulldozer handle, and accidental walking and other issues to achieve the effect of meeting actual needs

Active Publication Date: 2022-05-24
SHANTUI CONSTR MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Bulldozers often work on construction sites, and the operator must have certain operating skills. However, during the operation process, after the bulldozer is started, the driving handle of the bulldozer is sometimes touched by mistake without the operator's intention to operate, resulting in Accidental walking, this situation is likely to cause some damage to the surrounding people or things
In addition, the cleanliness requirements of the hydraulic system of bulldozers are getting higher and higher. When the cleanliness detection device sends out an alarm, unless the oil filter element is replaced immediately, the whole machine cannot continue to work and the hydraulic components will be damaged, which brings users many inconveniences

Method used

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  • Bulldozer safety control method and control device, bulldozer
  • Bulldozer safety control method and control device, bulldozer
  • Bulldozer safety control method and control device, bulldozer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] figure 1 This is a schematic diagram of a bulldozer safety control method provided in Embodiment 1 of the present invention, which is executed by the bulldozer, for example, may be executed by a controller of the bulldozer. like figure 1 As shown, the bulldozer safety control method includes:

[0026] In step S10, it is detected that the enabling switch is triggered, and the neutral vehicle lock valve is controlled to be powered on.

[0027] Specifically, the bulldozer includes an engine, a service brake lever, an instrument console, a service handle, a solenoid valve, an enable switch and a neutral vehicle lock valve, and the enable switch is electrically connected to the neutral vehicle lock valve. The gears in the driving handle include at least two directional gears, forward gear and reverse gear, and a neutral gear for shifting, and each directional gear includes three speed gears, such as forward Speed ​​1 gear, speed 2 gear and speed 3 gear, among which, the d...

Embodiment 2

[0033] Optionally, on the basis of the foregoing Embodiment 1, image 3 A schematic diagram of a bulldozer safety control method provided in Embodiment 2 of the present invention, such as image 3 As shown, the bulldozer safety control method includes:

[0034]Step S11 , after controlling the neutral car lock valve to be powered on, it also includes unlocking the directional gear.

[0035] Specifically, after the neutral lock valve is controlled to be powered on, the direction gear in the driving handle is unlocked, and the whole machine can switch between the forward gear, the reverse gear and the neutral gear.

[0036] Step S12, if the pressure value of the forward gear sensor is less than the first pressure value, it is determined that the current gear is the reverse gear.

[0037] Specifically, refer to figure 2 , a forward gear sensor is set corresponding to the forward gear position, and a first pressure value is set corresponding to the forward gear sensor, such as ...

Embodiment 3

[0044] Optionally, Figure 4 A schematic diagram of a bulldozer safety control method provided in Embodiment 3 of the present invention, such as Figure 4 As shown, the bulldozer safety control method includes:

[0045] Step S100, when the differential pressure alarm signal is received, control the neutral car lock valve to power on or power off according to the working time T of the engine.

[0046] Specifically, the bulldozer also includes a hydraulic system, and the hydraulic system includes an oil filter. The oil filter is used to maintain the cleanliness of the oil in the hydraulic system and make the hydraulic system work normally. A differential pressure alarm is set on the oil filter. For example, when the cleanliness of the oil is greater than or equal to three kilograms, the differential pressure alarm will output an alarm signal, and the neutral lock valve will be controlled to power on according to the monitored working time T of the engine. Power off.

[0047] ...

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PUM

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Abstract

Embodiments of the present invention provide a bulldozer safety control method, a control device, and a bulldozer. The bulldozer safety control method includes: monitoring that the enabling switch is triggered, then controlling the neutral lock valve to be powered on; after the neutral lock valve is powered on, if the time for the current gear to be neutral exceeds the preset time, Then control the power-off of the neutral lock valve; and also include: when receiving the differential pressure alarm signal, control the power-on or power-off of the neutral lock valve according to the working time T of the engine. Through the technical solution provided by the embodiment of the present invention, after the bulldozer is started, the driving handle can be prevented from being accidentally touched to cause a safety accident when there is no operation intention; Continue to work without damaging the hydraulic components, thus meeting the actual needs of the job site.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of bulldozers, and in particular, to a safety control method and control device of a bulldozer, and a bulldozer. Background technique [0002] A bulldozer is a road construction machine that is loaded with bulldozing in front of a tractor, used for bulldozing, leveling construction sites, etc. [0003] Bulldozers often operate on construction sites, and the operator must have certain operating skills. However, during the operation, after the bulldozer is started, the bulldozer’s driving handle is sometimes accidentally touched without the operator’s intention to operate, resulting in Accidental walking, this situation can easily cause certain damage to the surrounding people or objects. In addition, the cleanliness requirements of the bulldozer's hydraulic system are also getting higher and higher. When the cleanliness detection device issues an alarm, unless the oil filter element...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02F3/76E02F3/80E02F3/84E02F3/85
CPCE02F3/76E02F3/80E02F3/84E02F3/841E02F3/842
Inventor 姜友山刘倩倩朱耿寅韦海云赵建军韩峰
Owner SHANTUI CONSTR MASCH CO LTD