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Engineering vehicle automatic height and speed limiting safety control system and control method thereof

A technology of engineering vehicles and control methods, which is applied in control/regulation systems, non-electric variable control, speed/acceleration control, etc., can solve the problems of blocking the driver's sight, running height detection and safety monitoring, collision accidents, etc., to achieve Improved safety and comfort

Inactive Publication Date: 2019-11-22
ANHUI HELI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Construction vehicles with fixed masts mainly include forklifts and empty container stackers, both of which belong to the handling construction machinery. The picking and stacking in the handling operation is mainly through the front fork (or attachment) of the vehicle. and gantry structure, the existing two types of engineering vehicles mentioned above are not equipped with operating height detection and corresponding safety monitoring, and basically do not have the functions of operating height limit alarm and vehicle speed limit protection. In actual work, if When the driver does not have good safety awareness and the operation is not standardized enough, there is a certain safety risk
[0003] For example: when the mast is carrying goods up and running at a high position, the driver’s sight will be blocked due to the obstruction of the front goods, resulting in an accidental collision accident; in addition, when the mast is continuously at a high position and the vehicle is running at high speed with load Due to the forward movement of the vehicle's center of gravity, emergency braking may cause serious accidents such as accidental rollover of construction vehicles

Method used

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  • Engineering vehicle automatic height and speed limiting safety control system and control method thereof
  • Engineering vehicle automatic height and speed limiting safety control system and control method thereof
  • Engineering vehicle automatic height and speed limiting safety control system and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A control method for automatically limiting the height and speed of an engineering vehicle, first setting the reference values ​​of the rising stroke height of the mobile mast: H1, H2, H3, wherein H1<H2<H3, H1 is the minimum height of the mobile mast (the mobile mast drop to the limit height value), H2 is the safety height of the mobile gantry (the height of the mobile gantry does not exceed the fixed gantry); H3 is the highest height of the mobile gantry (the height of the mobile gantry rising to the limit); set 105 %H1~95%H2 is the safe operating height range, and then follow the steps below:

[0032] (1) Collect current vehicle operating state information parameters;

[0033] (2) Judging whether the current vehicle running status information parameter has the height H of the mobile mast; if yes, enter step (3); if not, return to step (1);

[0034] (3) Compare the numerical values ​​of H and H3; when H>H3, it is an invalid parameter, and return to step (1); when H≤H3...

Embodiment 2

[0047] For the convenience of accurate description, the empty container stacker is used as the case model here, such as image 3 As shown, a control method for automatic height and speed limit of engineering vehicles, first set the height reference value of the rising stroke of the mobile mast: H1 (2500mm), H2 (8080mm), H3 (14050mm), set 2625 ~ 7676mm as the safe Run the altitude interval, then proceed as follows:

[0048] (1) Collect current vehicle running state information parameters;

[0049] (2) Judging whether the current vehicle running status information parameter has the height H of the mobile mast; if yes, enter step (3); if not, return to step (1);

[0050] (3) Determine whether the H value is valid; when H>14050mm, it is an invalid parameter, and return to step (1); when H≤14050mm, it is a valid parameter, and enter step (4);

[0051] (4) Judging whether H is within the safe operating height range of 2625-7676mm; if yes, proceed to step (5); if not, proceed to st...

Embodiment 3

[0063] Such as Figure 1-3 As shown, a safety control system for realizing the control method described above includes a vehicle controller 5, an engine 9, a fixed mast 1, a movable mast 2, and a lifting cylinder 7 for driving the mobile mast 1 to lift; A height sensor 4 for detecting the height of the gantry is installed on the movable gantry 1, the engine 9 is connected with an engine controller 8, and the oil inlet end of the lifting cylinder 7 is connected with a proportional solenoid valve 6 in series; the height sensor The output end of 4 is connected with the input end of the vehicle controller 5, and the output end of the vehicle controller 5 is connected with the input end of the engine controller 8 and the proportional solenoid valve 6.

[0064] In a further solution, the output terminal of the vehicle controller 5 is connected with a vehicle instrument 3 . In order to grasp the running height status of the mobile mast and the running speed of the vehicle in real ti...

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Abstract

The invention discloses an engineering vehicle automatic height and speed limiting control method, which comprises the following steps of: firstly, setting height reference values H1, H2 and H3 of a movable portal frame, wherein H1< H2 <H3 , taking 105% H1-95% H2 as a safe operation height interval, and then collecting current vehicle operation state information parameters; judging whether the current vehicle operation state information parameters have the height H of the movable portal frame or not; when H is in the safe operation height interval, judging that the vehicle operates normally; otherwise, judging that the vehicle enters a limited operation state, collecting H in real time in the process, and carrying out the next cycle operation. The invention further provides an engineeringvehicle automatic height and speed limiting safety control system, and through automatic control of the vehicle controller, the ascending or descending speed of the movable portal frame is limited, and the running speed of the vehicle is limited. According to the control method, the operation height of the portal frame can be detected in real time, and the safety and comfort of the vehicle in theworking process can be effectively improved.

Description

technical field [0001] The invention belongs to the field of mechanical control, and in particular relates to an automatic height-limiting and speed-limiting safety control system for engineering vehicles and a control method thereof. Background technique [0002] Construction vehicles with fixed masts mainly include forklifts and empty container stackers, both of which belong to the handling construction machinery. The picking and stacking in the handling operation is mainly through the front fork (or attachment) of the vehicle. and gantry structure, the existing two types of engineering vehicles mentioned above are not equipped with operating height detection and corresponding safety monitoring, and basically do not have the functions of operating height limit alarm and vehicle speed limit protection. In actual work, if When the driver does not have a good safety awareness and the operation is not standardized enough, there are certain safety risks. [0003] For example: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60Q5/00B60K31/02B66F9/06B66F9/075B66F9/08
CPCB60Q5/005B60K31/02B66F9/06B66F9/08B66F9/0755B60K2031/0091
Inventor 许涛薛振见王法录宋强
Owner ANHUI HELI CO LTD
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