CN204783331U - Fork truck driving system and fork truck - Google Patents
Fork truck driving system and fork truck Download PDFInfo
- Publication number
- CN204783331U CN204783331U CN201520500118.0U CN201520500118U CN204783331U CN 204783331 U CN204783331 U CN 204783331U CN 201520500118 U CN201520500118 U CN 201520500118U CN 204783331 U CN204783331 U CN 204783331U
- Authority
- CN
- China
- Prior art keywords
- fork truck
- motor
- reduction valve
- power system
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The utility model discloses a fork truck driving system and fork truck, fork truck driving system include engine, gas cylinder, relief pressure valve, it is continuous with the import of relief pressure valve that the gas cylinder passes through the pipeline, and the export of relief pressure valve links to each other with the air inlet of engine, be equipped with heating channel in the relief pressure valve, it is continuous with the cooling passage of engine that heating channel passes through the pipeline. Fork truck, including the automobile body with fork truck driving system, fork truck driving system establishes on the automobile body. Coolant liquid through the engine heats the relief pressure valve of decompression work, prevents that the relief pressure valve temperature is low excessively, guarantees the reliability of diaphragm work in the relief pressure valve, improves fork truck job stabilization nature and reliability.
Description
Technical field
The utility model relates to fork truck technical field, especially relates to a kind of fork truck power system and fork truck.
Background technique
Fork truck is industrial transportation vehicle, very important role is play in the logistics system of enterprise, be widely used between harbour, station, airport, goods yard, factory, warehouse, Transfer center and DISTRIBUTION CENTRE etc., can carry out handling, the transport operation of pallet cargo in cabin, compartment and shipping container, be the main force in material conveyance equipment.
Fork truck manufacturing technology both domestic and external is day by day ripe, but common fork truck generally with bavin Water Oil Or Gas for power source, fuel user cost is high, and noise is large, and toxic emission is large; Along with the technology of fork truck is fast-developing, occur adopting liquefied petroleum gas (LPG) and gasoline as the double fuel fork truck of power source, fork truck user cost is low, and noise is little, and discharge amount of exhaust gas is little.
Liquefied petroleum gas (LPG) adopts gas cylinder to store, and make use of liquefied petroleum gas when using as power source, needs to adopt the hydraulic petroleum gas of reduction valve to high pressure to reduce pressure, could supply engine use after decompression.Reduction valve needs to absorb amount of heat in decompression process, and reduction valve temperature is too low, and low temperature easily causes valve interior diaphragm to damage, and affects the normal use of fork truck.
If notification number is the Chinese patent of CN203271952U, it discloses a kind of power supply device of double fuel forklift engine, on the left of motor, liquefied gas tank is set, engine right side arranges vaporizer, liquefied gas tank is connected with vaporization electromagnetic steering valve by pressure release valve, vaporization electromagnetic steering valve is connected with mixer suction port by vaporizer, mixer air outlet is connected with motor, below motor, fuel tank is set, fuel tank is connected with filter cleaner, filter cleaner is connected with motor by gasoline electromagnetic steering valve, throw over switch is by wire and vaporization electromagnetic steering valve, gasoline electromagnetic steering valve is connected.Pressure release valve needs to absorb amount of heat in decompression process, and make pressure release valve temperature too low, low temperature easily causes valve interior diaphragm to damage.
Model utility content
Not enough for prior art, technical problem to be solved in the utility model is to provide a kind of fork truck power system and fork truck, to reach the object preventing reduction valve temperature too low.
In order to solve the problems of the technologies described above, the technological scheme that the utility model adopts is:
A kind of fork truck power system, comprise motor, gas cylinder, reduction valve, described gas cylinder is connected with the import of reduction valve by pipeline, the outlet of reduction valve is connected with the suction port of motor, be provided with heat tunnel in described reduction valve, described heat tunnel is connected with the cooling passage of motor by pipeline.
Pipeline between described heat tunnel and the cooling passage of motor is provided with control valve, and reduction valve is provided with temperature transducer, and temperature transducer is connected with control valve.
Heat tunnel in described reduction valve is through hole, and the two ends of through hole are connected with the cooling liquid entrance of motor, the cooling liquid outlet of motor respectively.
Between described gas cylinder and reduction valve, pipeline is provided with filtering type tee union.
Described reduction valve is provided with the solenoid valve of the outlet for controlling reduction valve.
Described motor is electric spray type duel fuel engine.
A kind of fork truck, comprise car body and described fork truck power system, described fork truck power system is located on car body.
Fork truck also comprises vent systems, and described vent systems comprises front exhaust pipe, middle outlet pipe and final vacuum pipe, is provided with ternary catalyzing unit between described front exhaust pipe and middle outlet pipe, is provided with muffler assembly between middle outlet pipe and final vacuum pipe.
Fork truck also comprises connected ECU and efp, and described ECU is connected with motor.
The gas exhaust manifold of described front exhaust pipe or motor is provided with the first lambda sensor, and described middle outlet pipe is provided with the second lambda sensor.
The utility model compared with prior art, has the following advantages:
Heated by the reduction valve of cooling liquid to decompression work of motor, prevent reduction valve temperature too low, ensure the reliability of reduction valve interior diaphragm work, improve stability and the reliability of fork truck work; Detected the concentration of oxygen in exhaust by the lambda sensor that outlet pipe is set up, control the increase and decrease of fuel oil, thus make air-fuel ration control near theoretical value, improve power character and the Economy of fork truck, reduce the discharge amount of pollutant in tail gas.
Accompanying drawing explanation
Below the content expressed by each width accompanying drawing of this specification and the mark in figure are briefly described:
Fig. 1 is the utility model fork truck complete vehicle structure schematic diagram.
Fig. 2 is the utility model power system architecture schematic diagram.
Fig. 3 is the utility model vent systems front view.
Fig. 4 is the utility model vent systems plan view.
In figure: 1, car body; 2, ransaxle; 3, driving wheel; 4, equipment; 5, power system; 501, motor; 502, ECU; 503, efp; 504, the first wire harness; 505, the second wire harness; 506, LPG steel cylinder; 507, filtering type tee union; 508, reduction valve; 509, reduction valve support; 510, the first high-pressure rubber pipe; 511, the second high-pressure rubber pipe; 512, low pressure hose; 513, the first loop hose; 514, the second loop hose; 515, solenoid valve; 6, gearbox; 7, steering axle; 8, deflecting roller; 9, overhead guard; 10, hydraulic system; 11, vent systems; 1101, front exhaust pipe; 1102, ternary catalyzing unit; 1103, middle outlet pipe; 1104, muffler assembly; 1105, final vacuum pipe; 1106, the first lambda sensor; 1107, the second lambda sensor; 1108, the 3rd wire harness; 1109, quad bundle; 12, gas handling system; 13, control system.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, embodiment of the present utility model is described in further detail.
As shown in Figure 1, this fork truck comprises car body 1, and car body 1 lower front is provided with ransaxle 2, is equipped with driving wheel 3 at the two ends of ransaxle 2, and ransaxle 2 is provided with equipment 4, and car body 1 lower rear is provided with steering axle 7 and is located at the deflecting roller 8 at steering axle 7 two ends; Car body 1 is provided with the power system 5 providing car load power, power system 5 is connected with ransaxle 2 by gearbox 6, car body 1 is provided with vent systems 11, vent systems 11 is connected with the enmgine exhaust of power system 5, car body 1 is provided with gas handling system 12, gas handling system 12 and power system 5 engine intake be connected; Be provided with overhead guard 9 above on car body 1, be also provided with hydraulic system 10 and control system 13 at car body 1.
As shown in Figure 2, power system 5 comprises gas cylinder, filtering type tee union 507, reduction valve 508, the fuel tank of motor 501, ECU502, efp 503, storage liquefied petroleum gas (LPG); Wherein, motor 501 is electric spray type duel fuel engine, and gasoline/LPG can be adopted to be power source; ECU502 is arranged in the middle part of car body 1, and ECU502 is connected with motor 501 by the first wire harness 504; It is anterior that efp 503 is located at car body 1, and efp 503 is connected with ECU502 by the second wire harness 505.
Gas cylinder is that LPG steel cylinder 506, LPG steel cylinder 506 is fixed on car body 1 rear end, and filtering type tee union 507 is fixed on car body 1 mid-rear portion, and reduction valve 508 is fixed on motor 501 by reduction valve support 509.Connect LPG steel cylinder 506 and filtering type tee union 507 by the first high-pressure rubber pipe 510, connect filtering type tee union 507 and reduction valve 508 by the second high-pressure rubber pipe 511, connect reduction valve 508 and motor 501 suction port by low pressure hose 512.
Reduction valve 508 is provided with the solenoid valve 515 of the outlet for controlling reduction valve, and solenoid valve 515 is connected with key operation on fork truck, is controlled the power source pattern selecting to adopt by key operation.
Heat tunnel is provided with in reduction valve 508, heat tunnel is through hole, the two ends of through hole are connected with second loop hose 514 one end with the first loop hose 513 respectively, the cooling liquid entrance of the first loop hose 513 and second loop hose 514 the other end difference connecting engine 501 and cooling liquid outlet.First loop hose is provided with control valve, and reduction valve is provided with temperature transducer, and temperature transducer is connected with control valve.
As shown in Figure 3 and Figure 4, vent systems 11 comprises front exhaust pipe 1101, ternary catalyzing unit 1102, middle outlet pipe 1103, muffler assembly 1104 and final vacuum pipe 1105; Front exhaust pipe 1101 one end is connected with motor 501 gas exhaust manifold, and the other end is connected with ternary catalyzing unit 1102 suction port end; Middle outlet pipe 1103 one end is connected with ternary catalyzing unit 1102 air outlet end, and the other end is connected with muffler assembly 1104 suction port end; Final vacuum pipe 1105 and muffler assembly 1104 air outlet end weld together.
Motor 501 gas exhaust manifold or front exhaust pipe are provided with the first lambda sensor 1106, middle outlet pipe 1103 is provided with the second lambda sensor 1107, second lambda sensor 1107 and requires to be greater than 10 ° with horizontal plane angle.First lambda sensor 1106 is connected into ECU502 by the 3rd wire harness 1108, and the second lambda sensor 1107 is connected into ECU502 by quad bundle 1109.
Further describe below by two specific embodiments:
Embodiment 1, and when car load runs with gasoline state, turn on key operation, motor 501 is lighted a fire.Gasoline, by fuel tank sucking-off, after gasoline filter impurity screening, delivers to the ejection of central injection device; Air is mixed to form mixed gas with atomization gas by namely gas handling system 12 to suck after closure, and be dispensed to each cylinder by intake manifold and burn, motor 501 externally does work.
When operator's operating electronic gas pedal 503, signal transfers to ECU502 by the second wire harness 505, ECU502 is through calculating, analyzing, contrast, work order is sent to power units such as motor 501 central injection devices by the first wire harness 504, the power units such as motor 501 central injection device adjust fuel injection quantity according to instruction, make motor 501 working state meet operator's user demand.
When the fork truck tail gas of high temperature is by vent systems 11, the purifying agent in the ternary catalyzing unit 1102 in vent systems 11 will strengthen CO, HC and NO
xthe activity of three kinds of gases, impels it to carry out certain redox reaction, and wherein CO is at high temperature oxidized to colourless nontoxic carbon dioxide; HC is at high temperature oxidized to water and carbon dioxide; NO
xbe reduced into nitrogen and oxygen, three kinds of harmful gases are all cleaned.
The first lambda sensor 1106 arranged in vent systems 11 and the second lambda sensor 1107 mainly detect oxygen concentration in the tail gas of discharge, to guarantee that motor 501 actual mixing ratio is all the time close to chemically correct fuel.
Wherein, first lambda sensor 1106 is located on motor 501 gas exhaust manifold, detects, when actual mixing ratio uprises the tail gas that motor 501 is discharged without purification, in exhaust, oxygen concentration increases, and little electromotive force signal is transferred to ECU502 by the 3rd wire harness 1108 by the first lambda sensor 1106; When actual mixing ratio is lower than chemically correct fuel, in exhaust, oxygen concentration reduces, and large electromotive force signal is transferred to ECU502 by the 3rd wire harness 1108 by the first lambda sensor 1106.ECU502 judges the high or low of air fuel ratio according to the electromotive force signal difference from the first lambda sensor 1106, and corresponding control injection duration or fuel injection quantity, thus mixed gas actual mixing ratio is controlled near theoretical value.
Second lambda sensor 1107 is located at ternary catalyzing unit 1102 rear, similarly, in the tail gas that ternary catalyzing unit 1102 purifies by the second lambda sensor 1107, oxygen concentration feeds back to ECU502 by quad bundle 1109, the signal of the first lambda sensor 1106 and the second lambda sensor 1107 contrasts by ECU502, the signal of the first lambda sensor 1106 is higher than the second lambda sensor 1107 under normal circumstances, if the signal of two lambda sensors is identical, prove that ternary catalyzing unit 1102 lost efficacy.
Embodiment 2, and high pressure LPG is stored in LPG steel cylinder 506, and when car load runs with LPG state, turn on key operation, motor 501 is lighted a fire.High pressure LPG is flowed out by LPG steel cylinder 506, flow in filtering type tee union 507 through the first high-pressure rubber pipe 510, the pressure in whole system, by the impurity filtering in LPG, is stablized on the other hand in filtering type tee union 507 1 aspect, prevents that pressure is excessive exists potential safety hazard.
High pressure LPG after filtration flows into reduction valve 508 through the second high-pressure rubber pipe 511, be decompressed to pressure condition when applicable motor 501 operates here, its decompression process needs to absorb amount of heat, for preventing the diaphragm in reduction valve assembly 508 from damaging, in system, motor 501 circulating hot water is imported in reduction valve 508 by the first loop hose 513 and the second loop hose 514.
First loop hose is provided with control valve, and reduction valve is provided with temperature transducer, and temperature transducer is connected with control valve.Reduction valve in the course of the work, temperature sensor senses to reduction valve temperature lower than threshold values time, control valve open first loop hose formed path, by the cooling liquid of motor, reduction valve is heated, prevents reduction valve temperature too low.
Post-decompression gaseous petroleum gas is by mixer integrated on low pressure hose 512 inflow engine 501, simultaneously, air also enters mixer after sucking closure by gas handling system 12 and gaseous petroleum gas is mixed to form mixed gas, be dispensed to each cylinder by intake manifold to burn, motor 501 externally does work.
When operator's operating electronic gas pedal 503, signal transfers to ECU502 by the second wire harness 505, ECU502 is through calculating, analyzing, contrast, work order is sent to power units such as motor 501 central injection devices by the first wire harness 504, the power units such as motor 501 central injection device, according to instruction adjustment LPG flow, make motor 501 working state meet operator's user demand.
When the fork truck tail gas of high temperature is by vent systems 11, purifying agent in ternary catalyzing unit 1102 in vent systems 11 will strengthen the activity of CO, HC and NOX tri-kinds of gases, impel it to carry out certain redox reaction, wherein CO is at high temperature oxidized to colourless nontoxic carbon dioxide; HC is at high temperature oxidized to water and carbon dioxide; NOX is reduced into nitrogen and oxygen.Three kinds of harmful gases are all cleaned.
The first lambda sensor 1106 arranged in vent systems 11 and the second lambda sensor 1107 mainly detect oxygen concentration in the tail gas of discharge, to guarantee that motor 501 actual mixing ratio is all the time close to chemically correct fuel.
Wherein, first lambda sensor 1106 is located on motor 501 gas exhaust manifold, detects, when actual mixing ratio uprises the tail gas that motor 501 is discharged without purification, in exhaust, oxygen concentration increases, and little electromotive force signal is transferred to ECU502 by the 3rd wire harness 1108 by the first lambda sensor 1106; When actual mixing ratio is lower than chemically correct fuel, in exhaust, oxygen concentration reduces, and large electromotive force signal is transferred to ECU502 by the 3rd wire harness 1108 by the first lambda sensor 1106.ECU502 judges the high or low of air fuel ratio according to the electromotive force signal difference from the first lambda sensor 1106, and corresponding control mixed gas injection duration or emitted dose, thus mixed gas actual mixing ratio is controlled near theoretical value.
Second lambda sensor 1107 is located at ternary catalyzing unit 1102 rear, similarly, in the tail gas that ternary catalyzing unit 1102 purifies by the second lambda sensor 1107, oxygen concentration feeds back to ECU502 by quad bundle 1109, the signal of the first lambda sensor 1106 and the second lambda sensor 1107 contrasts by ECU502, the signal of the first lambda sensor 1106 is higher than the second lambda sensor 1107 under normal circumstances, if the signal of two lambda sensors is identical, prove that ternary catalyzing unit 1102 lost efficacy.
Heated by the reduction valve of cooling liquid to decompression work of motor 501, prevent reduction valve temperature too low, ensure the reliability of reduction valve interior diaphragm work, improve stability and the reliability of fork truck work.
By reference to the accompanying drawings the utility model is exemplarily described above; obvious the utility model specific implementation is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that design of the present utility model and technological scheme are carried out; or design of the present utility model and technological scheme directly applied to other occasion, all within protection domain of the present utility model without to improve.
Claims (10)
1. a fork truck power system, comprise motor, gas cylinder, reduction valve, described gas cylinder is connected with the import of reduction valve by pipeline, the outlet of reduction valve is connected with the suction port of motor, it is characterized in that: be provided with heat tunnel in described reduction valve, described heat tunnel is connected with the cooling passage of motor by pipeline.
2. fork truck power system as claimed in claim 1, is characterized in that: the pipeline between described heat tunnel and the cooling passage of motor is provided with control valve, and reduction valve is provided with temperature transducer, and temperature transducer is connected with control valve.
3. fork truck power system as claimed in claim 1, it is characterized in that: the heat tunnel in described reduction valve is through hole, the two ends of through hole are connected with the cooling liquid entrance of motor, the cooling liquid outlet of motor respectively.
4. fork truck power system as claimed in claim 1, is characterized in that: between described gas cylinder and reduction valve, pipeline is provided with filtering type tee union.
5. fork truck power system as claimed in claim 1, is characterized in that: described reduction valve is provided with the solenoid valve of the outlet opening and closing for controlling reduction valve.
6. fork truck power system as claimed in claim 1, is characterized in that: described motor is electric spray type duel fuel engine.
7. a fork truck, comprises car body, it is characterized in that: also comprise fork truck power system as described in any one of claim 1 to 6, and described fork truck power system is located on car body.
8. fork truck as claimed in claim 7, it is characterized in that: also comprise vent systems, described vent systems comprises front exhaust pipe, middle outlet pipe and final vacuum pipe, is provided with ternary catalyzing unit between described front exhaust pipe and middle outlet pipe, is provided with muffler assembly between middle outlet pipe and final vacuum pipe.
9. fork truck as claimed in claim 7, it is characterized in that: also comprise connected ECU and efp, described ECU is connected with motor.
10. fork truck as claimed in claim 8, it is characterized in that: the gas exhaust manifold of described front exhaust pipe or motor is provided with the first lambda sensor, described middle outlet pipe is provided with the second lambda sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520500118.0U CN204783331U (en) | 2015-07-09 | 2015-07-09 | Fork truck driving system and fork truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520500118.0U CN204783331U (en) | 2015-07-09 | 2015-07-09 | Fork truck driving system and fork truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204783331U true CN204783331U (en) | 2015-11-18 |
Family
ID=54523393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520500118.0U Expired - Fee Related CN204783331U (en) | 2015-07-09 | 2015-07-09 | Fork truck driving system and fork truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204783331U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989559A (en) * | 2015-07-09 | 2015-10-21 | 中联重科安徽工业车辆有限公司 | Forklift power system and forklift |
| CN107553363A (en) * | 2017-09-01 | 2018-01-09 | 安徽合力股份有限公司 | A kind of sensor locator for the test of fork truck exhaust silencer insertion loss |
-
2015
- 2015-07-09 CN CN201520500118.0U patent/CN204783331U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989559A (en) * | 2015-07-09 | 2015-10-21 | 中联重科安徽工业车辆有限公司 | Forklift power system and forklift |
| CN104989559B (en) * | 2015-07-09 | 2018-11-09 | 中联重科安徽工业车辆有限公司 | A kind of fork truck dynamical system and fork truck |
| CN107553363A (en) * | 2017-09-01 | 2018-01-09 | 安徽合力股份有限公司 | A kind of sensor locator for the test of fork truck exhaust silencer insertion loss |
| CN107553363B (en) * | 2017-09-01 | 2023-07-14 | 安徽合力股份有限公司 | Sensor positioning device for forklift exhaust muffler insertion loss test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20190709 |