CN103786581A - Automatic speed limiting device for forklift - Google Patents
Automatic speed limiting device for forklift Download PDFInfo
- Publication number
- CN103786581A CN103786581A CN201410050991.4A CN201410050991A CN103786581A CN 103786581 A CN103786581 A CN 103786581A CN 201410050991 A CN201410050991 A CN 201410050991A CN 103786581 A CN103786581 A CN 103786581A
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- forklift
- fork truck
- motor
- blower fan
- circular pipe
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- Forklifts And Lifting Vehicles (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention relates to an automatic speed limiting device for a forklift. A laser coordinate measurement instrument is installed in front of a hood of the forklift, a forklift load sensor is installed on a forklift suspension frame, a forklift speed sensor is installed on a forklift speed changer, and a round pipeline is installed on an air inlet pipe of a forklift engine and communicated with air inlet pipelines in front and at the rear of a throttle valve; a first round pipe valve and a second round pipe valve are installed at the two ends of the round pipeline respectively, a fan is installed in the middle of the round pipeline, a motor is connected with the first round pipe valve and the second round pipe valve, the signal input end of a single-chip microcomputer is respectively connected with the laser coordinate measurement instrument, the forklift load sensor and the forklift speed sensor, and the signal output end of the single-chip microcomputer is connected with the motor and the fan through a motor control unit and a fan control unit respectively and used for controlling the motor and the fan to start or stop. According to the automatic speed limiting device for the forklift, the running speed of the forklift can be automatically limited according to the load condition of the forklift, the condition of road surfaces for running and a preset speed limitation value, meanwhile, the upslope dynamic property and the running stability of the forklift can be guaranteed, and therefore the running safety of the forklift can be guaranteed.
Description
Technical field
The present invention relates to a kind of fork truck intelligent controlling device, more specifically, relate to a kind of fork truck automatic speed limit device.
Background technology
Increase substantially and reduce human load, alleviate labor intensity along with what people required work efficiency, fork truck uses more and more extensive.But the speed that fork truck travels also more and more faster, drive over the speed limit and the accident that causes is more and more, caused a large amount of personal casualty and property damage.The fork truck speed-limit device of existing use is to be substantially all only to play alarm function in hypervelocity, and prompting chaufeur slows down and goes slowly, but can not fundamentally limit fork truck hypervelocity.Although simultaneously but but some fork truck speed-limit device can reach the speed limit of a stable condition bring new problem: fugitiveness that fork truck travels, not enough and cause fork truck work Efficiency Decreasing at upward slope process medium power.
Summary of the invention
The defect or the deficiency that exist for above-mentioned prior art, the object of the invention is to, a kind of fork truck automatic speed limit device is provided, this device can also guarantee the dynamic property of its upward slope and the stability of travelling simultaneously according to the moving velocity of the load condition of fork truck self and the road surface of travelling situation and the velocity constraint volitional check fork truck setting in advance, thereby guarantees the safety that fork truck travels.
For achieving the above object, the present invention takes following technical solution;
A kind of fork truck automatic speed limit device, comprise blower fan, first and second pipe valve, pipe pipeline, laser coordinate survey meter, car speed sensor, fork truck load cell, motor, light coordinate survey meter, car speed sensor, micro controller system, it is characterized in that: laser coordinate survey meter is arranged on fork truck hood front portion, be used for measuring the road surface situation of fork truck road ahead; Fork truck load cell is arranged on fork truck suspension, for gathering the load of fork truck suspension; Car speed sensor is arranged on forklift speed variator, for gathering the real-time speed of fork truck; Circular pipe is arranged on forklift engine air inlet pipe, and is communicated with the induction tract before and after throttle gate; First and second pipe valve is arranged on respectively circular pipe two ends, is the switching at circular pipe two ends for controlling circular pipe with the situation that is communicated with of engine charge pipeline; Assembling, in circular pipe middle part, takes out the gas in any one end, engine charge pipeline throttle gate front and back and can under the effect of rotating blower fan, be discharged to the other end by circular pipe for aspirating; Motor is connected with first and second pipe valve, for driving a pair of pipe valve forward or reverse; Micro controller system signal input part connects respectively laser coordinate survey meter, fork truck load cell, car speed sensor, for receiving the signal gathering from laser coordinate survey meter, fork truck load cell and car speed sensor, micro controller system signal output part is connected motor and blower fan by motor control unit with air-blower control unit respectively, for controlling motor and blower fan starting and stopping.
First and second circular valve is connected with motor by mechanical rocking arm.Blower fan be can rotating axial fan.
The invention has the beneficial effects as follows:
The present invention can also guarantee the dynamic property of its upward slope and the stability of travelling simultaneously according to the moving velocity of the load condition of fork truck self and the road surface of travelling situation and the velocity constraint volitional check fork truck setting in advance, thereby guarantees the safety that fork truck travels.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is the schematic diagram that circular pipe and other associated components are installed on engine charge pipeline.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As Fig. 1, shown in 2, the present embodiment provides a kind of fork truck automatic speed limit device, comprises laser coordinate survey meter 1, fork truck load cell 2, car speed sensor 3, micro controller system 4, circular pipe 5, motor 6, blower fan 7 that can rotating, first and second valve 8,9.
Laser coordinate survey meter 1, fork truck load cell 2, car speed sensor 3, motor 6 and blower fan 7 are connected on micro controller system, circular pipe 5 its circular pipe 5 two ends on the induction tract of driving engine be installed be welded in the appropriate location before and after throttle gate, first, two circular valves 8, 9 these two valves of two ends that are arranged on circular pipe 5 correspondences are connected with motor 6 by mechanical rocking arm, blower fan 7 that can rotating is arranged on the middle part of circular pipe 5, can under the effect of rotating blower fan, be discharged to the other end for aspirating the gas in any one end, taking-up engine charge pipeline throttle gate front and back by circular pipe.Laser coordinate survey meter 1 is arranged on fork truck hood front portion, is used for measuring the road surface situation (as the gradient on road surface etc.) of fork truck road ahead.Fork truck load cell 2 is arranged on fork truck suspension, for gathering the load of fork truck suspension.Car speed sensor 3 is arranged on forklift speed variator shell, for gathering the real-time speed of fork truck.In engine charge pipeline, there are jet pipe 11 and throttle gate 10, circular pipe 5 is arranged on its two ends on forklift engine air inlet pipe and is welded on respectively suitable position, throttle gate 10 front and back, first, two pipe valves 8, 9 are arranged on respectively the both ends open place of circular pipe 5, blower fan 7 that can rotating is arranged on the middle part of circular pipe 5, blower fan 7 and motor 6 are controlled and are rotated by micro controller system 4, its motor 6 opens first by mechanical rocking arm, two valves 8, 9, blower fan 7 moves respectively exhaust as required, wherein draw and the air inlet pipe that is discharged to throttle gate 10 front portions, reduce forklift engine horsepower output and underspeed when blower fan 7 moves from valve 9, and draw from the first valve 8 and be discharged to throttle gate 10 and increase engine power below in air inlet pipe time and promote and start dynamic property when blower fan 7 moves.
What in the present embodiment, blower fan 7 was selected is a kind of axial fan with function that can rotating.
Micro controller system 4 in the present embodiment connects circuit that same each several part is connected and then need to write the maximum speed of fork truck operation in work and stable moderate velocity according to the practical working situation of fork truck and under different condition of loading, writes different maximum speed limits and stable moderate velocity to guarantee its fuel economy, when first by fork truck load cell 2, the signal receiving is transferred to micro controller system 4 under certain load, velocity constraint and the stable moderate velocity of maximum under this state that micro controller system 4 is finished writing in advance according to 2 signal enablings that transmit, the speed sensor 3 being arranged in fork truck driving process in transmission case passes to micro controller system 4 the speed signal receiving, micro controller system 4 is compared the speed receiving through speed sensor 3 with the speed setting in advance, if through relatively discovery speed is the same with maximum speed, micro controller system 4 signal transmissions are controlled respectively motor 6 and blower fan 7 to motor control unit control and air-blower control unit, motor 6 opens first by mechanical rocking arm, two valves 8, 9, thereby the prograde circuit signal that blower fan 7 transmits according to micro controller system brings into operation, the rear portion of forward throttle gate 10 from engine air inlet tube is air-breathing and be again discharged to throttle gate 10 induction tract above by circular pipe through the first valve 8 and reach and reduce fork truck speed, the speed signal that micro controller system 4 receives from speed sensor 3 again compares, in the time that the velocity amplitude receiving and medium steady speed value are coincide, micro controller system outgoing signal is to motor control unit control motor 6 and air-blower control unit controls blower fan 7, motor 6 controls first, two valves 8, 9 close, blower fan 7 is out of service, moved in car at fork truck, if when micro controller system 4 transmits road surface, signal discovery front and has certain slope through laser coordinate survey meters 1, micro controller system 4 is speed limit program mask, and transmit other certain signal to motor control unit control motor 6 and air-blower control unit controls blower fan 7, motor 6 opens first, two valves 8, 9, thereby 7 of blower fans bring into operation, reversion absorbs the gas of throttle gate 10 front portions and is transferred in the rear induction tract of throttle gate 10 and has been increased engine power by circular pipe 5 and the second valve 9, improve the power of driving engine, increase the ability that fork truck goes up a slope.
Claims (3)
1. a fork truck automatic speed limit device, comprise laser coordinate survey meter (1), fork truck load cell (2), car speed sensor (3), micro controller system (4), circular pipe (5), motor (6), blower fan (7), first and second valve (8,9) that can rotating, it is characterized in that: described laser coordinate survey meter (1) is arranged on fork truck hood front portion, be used for measuring the road surface situation of fork truck road ahead; Fork truck load cell (2) is arranged on fork truck suspension, for gathering the load of fork truck suspension; Car speed sensor (3) is arranged on forklift speed variator, for gathering fork truck real-time speed; Circular pipe (5) is arranged on forklift engine air inlet pipe, and is communicated with the induction tract before and after throttle gate; First and second pipe valve (8,9) is arranged on respectively circular pipe (5) two ends, is the switching at circular pipe two ends for controlling circular pipe (5) with the situation that is communicated with of engine charge pipeline; Blower fan (7) is arranged on circular pipe (5) middle part, takes out the gas in any one end, engine charge pipeline throttle gate front and back and can under the effect of rotating blower fan (7), be discharged to the other end by circular pipe (5) for aspirating; Motor (6) is connected with first and second pipe valve (8,9), for driving a pair of pipe valve forward or reverse; Micro controller system (4) signal input part connects respectively laser coordinate survey meter (1), fork truck load cell (2), car speed sensor (3), for receiving the signal gathering from laser coordinate survey meter (1), fork truck load cell (2) and car speed sensor (3), micro controller system (4) signal output part is connected respectively motor (6) and blower fan (7) with air-blower control unit by motor control unit, for controlling motor (6) and blower fan (7) starts and stops.
2. fork truck automatic speed limit device according to claim 1, is characterized in that: described first and second circular valve (8,9) is connected with motor (6) by mechanical rocking arm.
3. fork truck automatic speed limit device according to claim 1, is characterized in that: described blower fan (7) is axial fan that can rotating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410050991.4A CN103786581B (en) | 2014-02-14 | 2014-02-14 | Fork truck automatic speed limit device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410050991.4A CN103786581B (en) | 2014-02-14 | 2014-02-14 | Fork truck automatic speed limit device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103786581A true CN103786581A (en) | 2014-05-14 |
| CN103786581B CN103786581B (en) | 2018-07-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410050991.4A Expired - Fee Related CN103786581B (en) | 2014-02-14 | 2014-02-14 | Fork truck automatic speed limit device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4532901A (en) * | 1979-05-04 | 1985-08-06 | Sturdy Truck Equipment, Inc. | Engine governor with fast reference positioning and slow opening and closing movement of throttle limiter |
| JPH1193737A (en) * | 1997-09-24 | 1999-04-06 | Toyota Motor Corp | Intake air volume control device for internal combustion engine |
| FR2852356A1 (en) * | 2003-03-13 | 2004-09-17 | Peugeot Citroen Automobiles Sa | Supercharged engine for motor vehicle, has turbo compressor with turbine on air line in parallel to valve, and electric motor adapted to drive turbine and compressor in rotation |
| CN102562324A (en) * | 2012-01-05 | 2012-07-11 | 江苏技术师范学院 | Training car speed limiting system |
| CN202357883U (en) * | 2011-12-01 | 2012-08-01 | 长安大学 | Automatic speed limiting device for car |
| CN103047029A (en) * | 2011-10-12 | 2013-04-17 | 福特环球技术公司 | Methods and systems for an engine |
| WO2013163128A1 (en) * | 2012-04-23 | 2013-10-31 | Honeywell International Inc. | Butterfly bypass valve, and throttle loss recovery system incorporating same |
-
2014
- 2014-02-14 CN CN201410050991.4A patent/CN103786581B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4532901A (en) * | 1979-05-04 | 1985-08-06 | Sturdy Truck Equipment, Inc. | Engine governor with fast reference positioning and slow opening and closing movement of throttle limiter |
| JPH1193737A (en) * | 1997-09-24 | 1999-04-06 | Toyota Motor Corp | Intake air volume control device for internal combustion engine |
| FR2852356A1 (en) * | 2003-03-13 | 2004-09-17 | Peugeot Citroen Automobiles Sa | Supercharged engine for motor vehicle, has turbo compressor with turbine on air line in parallel to valve, and electric motor adapted to drive turbine and compressor in rotation |
| CN103047029A (en) * | 2011-10-12 | 2013-04-17 | 福特环球技术公司 | Methods and systems for an engine |
| CN202357883U (en) * | 2011-12-01 | 2012-08-01 | 长安大学 | Automatic speed limiting device for car |
| CN102562324A (en) * | 2012-01-05 | 2012-07-11 | 江苏技术师范学院 | Training car speed limiting system |
| WO2013163128A1 (en) * | 2012-04-23 | 2013-10-31 | Honeywell International Inc. | Butterfly bypass valve, and throttle loss recovery system incorporating same |
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| Publication number | Publication date |
|---|---|
| CN103786581B (en) | 2018-07-31 |
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