CN210366880U - Goods rollover prevention control system of electric forklift - Google Patents
Goods rollover prevention control system of electric forklift Download PDFInfo
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- CN210366880U CN210366880U CN201921182273.7U CN201921182273U CN210366880U CN 210366880 U CN210366880 U CN 210366880U CN 201921182273 U CN201921182273 U CN 201921182273U CN 210366880 U CN210366880 U CN 210366880U
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- oil cylinder
- way valve
- lifting
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- motor driver
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- 230000002265 prevention Effects 0.000 title claims description 9
- 238000006073 displacement reaction Methods 0.000 claims abstract description 10
- 238000005303 weighing Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 claims description 81
- 239000010720 hydraulic oil Substances 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 5
- 238000005034 decoration Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009439 industrial construction Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
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- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model discloses an electric fork-lift prevents goods control system that tumbles belongs to special engineering machine tool intelligent control technical field. The gear pump is connected with an inclined multi-way valve and a lifting multi-way valve; the inclined multi-way valve is connected with an inclined oil cylinder in a control way; the lifting multi-way valve is connected with a lifting oil cylinder in a control way; the AC motor driver is connected with a pump control motor and a traction motor in a control way; the alternating current motor driver is also connected with a weighing sensor for detecting the lifting weight of the lifting oil cylinder, a linear displacement sensor for detecting the stroke of the lifting oil cylinder and a rotating speed sensor for detecting the rotating speed of the traction motor. The utility model discloses at electric fork truck at the in-process of traveling, can play to rise the system restriction electric current to the fork according to playing to rise goods weight, also can directly play to rise the system to the fork and carry out restriction electric current, prevent to tumble by the goods that the people arouses for the maloperation, improve electric fork truck's operating efficiency on the basis of avoiding the security accident.
Description
Technical Field
The utility model relates to an engineering machine tool, concretely relates to electric fork-lift prevents goods control system that tumbles belongs to special engineering machine tool intelligent control technical field.
Background
At present, the electric forklift is widely applied to agricultural production and industrial construction in the world and is one of indispensable special engineering machinery, so that the requirement on an electric control system of the electric forklift is higher and higher, and a traditional electric forklift walking system and a pallet fork lifting system independently operate, namely, the lifting system can be operated at will in the walking process of the electric forklift.
Although the relevant operation manual specifies that the fork is prohibited to operate, the walking locking fork working device is not practical and seriously affects the working efficiency of the electric forklift, so that the control system of the electric forklift does not deal with the function, namely, the fork can be arbitrarily operated no matter the electric forklift is fully loaded or unloaded in the walking process, so that some goods are tipped by misoperation, and even some casualty accidents are caused.
Disclosure of Invention
In order to overcome the defects in the prior art, the practical novel goods rollover prevention control system for the electric forklift is provided.
The utility model adopts the technical proposal that: an anti-tipping control system for goods of an electric forklift comprises a gear pump, wherein the gear pump is connected with an inclined multi-way valve and a lifting multi-way valve; the inclined multi-way valve is in control connection with an inclined oil cylinder; the lifting multi-way valve is in control connection with a lifting oil cylinder;
the system also comprises an alternating current motor driver, wherein the storage battery supplies power for the alternating current motor driver, and the alternating current motor driver is in control connection with a pump control motor and a traction motor;
the alternating current motor driver is also connected with a weighing sensor for detecting the lifting weight of the lifting oil cylinder, a linear displacement sensor for detecting the stroke of the lifting oil cylinder and a rotating speed sensor for detecting the rotating speed of the traction motor;
the oil path from the inclined multi-way valve to the inclined oil cylinder is connected with a switch electromagnetic valve which is connected with an alternating current motor driver;
and the inclined multi-way valve switch of the inclined multi-way valve and the lifting multi-way valve switch of the lifting multi-way valve are connected with an alternating current motor driver.
It further comprises the following steps: the US end, the VS end and the WS end of the alternating current motor driver are respectively connected with the leads for the pump control motor; the UM, VM and WM ends of the AC motor driver are respectively connected with the lead wire for the traction motor.
The +5V, AI4 end and the GND end of the alternating current motor driver are respectively connected with a wire for a wire position sensor; the +5V, AI5 end and the GND end of the AC motor driver are respectively connected with the weighing sensor through wires; and the +5V, AI6 end and the GND end of the alternating current motor driver are respectively connected with the rotating speed sensor through leads.
The DI1 end of the alternating current motor driver is connected with a system operation switch through a lead; the DI2 end of the AC motor driver is connected with a lead for lifting the multi-way valve switch; the DI3 terminal of the AC motor drive is connected to the lead wires for the tilt multiplex valve switch.
And the RXD, TXD and GND ends of the alternating current motor driver are connected with a display screen through wires.
And the DO1 end on the alternating current motor driver is connected with a wire for a switch solenoid valve.
The L port of the lifting multi-way valve is connected with a port P of the gear pump, the M port of the lifting multi-way valve is connected with the port P of the gear pump through a one-way valve II, the N port of the lifting multi-way valve is connected with a hydraulic oil tank, and the J port of the lifting multi-way valve is connected with a port U of the speed limiting valve; and an S port of the speed limiting valve is connected with a rodless cavity of the lifting oil cylinder.
The lifting oil cylinder comprises a lifting oil cylinder I and a lifting oil cylinder II, and rodless cavities of the lifting oil cylinder I and the lifting oil cylinder II are connected; the linear displacement sensor is arranged on the lifting oil cylinder II and is used for detecting the displacement of a piston rod of the lifting oil cylinder II; and the weighing sensor is connected with the rodless cavities of the lifting oil cylinder I and the lifting oil cylinder II.
The inclined multi-way valve F port is connected with the lifting multi-way valve I port, the inclined multi-way valve G port is connected with the gear pump P port through the one-way valve I, and the inclined multi-way valve H port is connected with the hydraulic oil tank; the port C of the inclined multi-way valve is connected with a hydraulic oil tank, the port D of the inclined multi-way valve is connected with a rod cavity of an inclined oil cylinder, and the port E of the inclined multi-way valve is connected with the port B of a switch electromagnetic valve; and the opening A of the switch electromagnetic valve is connected with a rodless cavity of the inclined oil cylinder.
The inclined oil cylinder comprises an inclined oil cylinder I and an inclined oil cylinder II, rod cavities of the inclined oil cylinder I and the inclined oil cylinder II are communicated with each other through oil pipes, and rodless cavities of the inclined oil cylinder I and the inclined oil cylinder II are communicated with each other through oil pipes.
The utility model discloses at electric fork truck at the in-process that traveles, can play to rise the system restriction electric current to the fork according to playing to rise goods weight, also can directly play to rise the system to the fork and carry out restriction electric current, for example: when the driving speed of the electric forklift exceeds 5km/h, the lifting height exceeds 300mm and the weight of the lifted goods exceeds 10% of the rated load, the fork can perform backward tilting action and lock the forward tilting action of the fork. The utility model discloses well display screen is used for monitoring whole control system, can adjust travel speed, lifting height and the three parameter proportion of goods weight according to concrete operating mode simultaneously and carry out the fork and lean forward the lock and die, adapt to multiple different occasions.
Compared with the prior art, the beneficial effects of the utility model are that: according to the real-time working condition of the forklift, the current is limited for the fork lifting system, the goods caused by manual misoperation are prevented from tipping, and the operating efficiency of the electric forklift is improved on the basis of avoiding safety accidents.
Drawings
FIG. 1 is a schematic diagram of the present invention;
in the figure: 1 storage battery, 2 system operation switches, 3 lifting multi-way valve switches, 4 tilting multi-way valve switches, 5 linear displacement sensors, 6 weighing sensors, 7 rotating speed sensors, 8 display screens, 9 tilting multi-way valves, 10 one-way valves I, 11 lifting multi-way valves, 12 one-way valves II, 13 overflow valves, 14 hydraulic oil tanks, 15 gear pumps, 16 speed limiting valves, 17 lifting oil cylinders I, 18 lifting oil cylinders II, 19 tilting oil cylinders I, 20 tilting oil cylinders II, 21 switching electromagnetic valves, 22 pump control motors, 23 traction motors and 24 alternating current motor drivers.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
Referring to fig. 1, in an electric forklift anti-tipping control system, a BAT + end of an alternating current motor driver is connected with a positive electrode of a storage battery 1 through a lead, and a BAT-end is connected with a negative electrode of the storage battery 1 through a lead; the DI1 terminal is connected with the system operation switch 2 by a lead; the DI2 end is connected with the lifting multi-way valve switch 3 by a lead; the DI3 end is connected with the tilt multi-way valve switch 4 by a lead; the +5V, AI4 end and the GND end are respectively connected with the linear position sensor 5 by leads; the +5V, AI5 end and the GND end are respectively connected with the weighing sensor 6 by leads; the +5V, AI6 end and the GND end are respectively connected with the rotating speed sensor 7 by leads; the RXD end, the TXD end and the GND end are respectively connected with the display screen 8 through wires; the DO1 end is connected with the switch electromagnetic valve 21 by a lead; the US, VS and WS ends are respectively connected with the pump control motor 22 through leads; the UM, VM and WM ends are respectively connected with the traction motor 23 by leads.
The gear pump 15P is driven by a pump control motor 22, and an overflow valve 13 is connected between an oil outlet P of the gear pump 15P and the hydraulic oil tank 14. A lifting multi-way valve 11L port is connected with a gear pump 15P port, an M port is connected with a gear pump 15P port through a one-way valve II 12, an N port is connected with a hydraulic oil tank 14, a J port is connected with a speed-limiting valve 16U port, and a speed-limiting valve 16S port is connected with a rodless cavity of the lifting oil cylinder. The lifting oil cylinder comprises a lifting oil cylinder I17 and a lifting oil cylinder II 18, and rodless cavities of the lifting oil cylinder I17 and the lifting oil cylinder II 18 are connected.
The port F of the inclined multi-way valve 9 is connected with the port I of the lifting multi-way valve 11, the port G is connected with the port P of the gear pump 15 through a one-way valve I10, the port H is connected with a hydraulic oil tank 14, the port C is connected with the hydraulic oil tank 14, the port D is connected with a rod cavity of the inclined oil cylinder, and the port E is connected with the port B of the switch electromagnetic valve 21; the opening 21A of the switch electromagnetic valve is connected with a rodless cavity of the inclined oil cylinder. The inclined oil cylinder comprises an inclined oil cylinder I19 and an inclined oil cylinder II 20, rod cavities of the inclined oil cylinder I19 and the inclined oil cylinder II 20 are communicated with each other through oil pipes, and rodless cavities of the inclined oil cylinder I19 and the inclined oil cylinder II 20 are communicated with each other through oil pipes.
And the linear displacement sensor 5 is arranged on the lifting oil cylinder II 18 and used for detecting the stroke of the lifting oil cylinder. And the weighing sensor 6 is connected with rodless cavities of the lifting oil cylinder I17 and the lifting oil cylinder II 18 and is used for detecting the lifting weight of the lifting oil cylinder. A speed sensor 7 is integrated on the traction motor 23 for detecting the motor speed.
The display screen 8 is used for monitoring the whole control system, and can adjust three parameter proportions of the running speed, the lifting height and the cargo weight according to specific working conditions to perform forward tilting locking of the fork.
The working principle is as follows:
after starting up, firstly, carrying out self-checking, if the self-checking fails, alarming for prompting, and stopping to check faults;
if self-checking passes, when electric fork-lift truck is at the in-process of traveling, according to lifting goods weight to the fork system current restriction that rises, also can directly carry out the current restriction to the fork system that rises, for example: when the driving speed of the electric forklift exceeds 5km/h, the lifting height exceeds 300mm and the weight of the lifted goods exceeds 10% of the rated load, the fork can perform backward tilting action and lock the forward tilting action of the fork. The three parameter proportions can also be adjusted according to the operating mode through the display screen to this embodiment, adapts to multiple different occasions, avoids the security accident that the maloperation arouses, improves electric fork-lift's operating efficiency.
The above description is only a preferred embodiment of the present invention, and meanwhile, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An anti-tipping control system for goods of an electric forklift comprises a gear pump (15), wherein the gear pump (15) is connected with an inclined multi-way valve (9) and a lifting multi-way valve (11); the inclined multi-way valve (9) is in control connection with an inclined oil cylinder; the lifting multi-way valve (11) is in control connection with a lifting oil cylinder;
the method is characterized in that:
the system is characterized by also comprising an alternating current motor driver (24), wherein the storage battery (1) supplies power to the alternating current motor driver (24), and the alternating current motor driver (24) is in control connection with a pump control motor (22) and a traction motor (23);
the alternating current motor driver (24) is also connected with a weighing sensor (6) for detecting the lifting weight of the lifting oil cylinder, a linear displacement sensor (5) for detecting the stroke of the lifting oil cylinder and a rotating speed sensor (7) for detecting the rotating speed of the traction motor (23);
an oil path from the inclined multi-way valve (9) to the inclined oil cylinder is connected with a switch electromagnetic valve (21), and the switch electromagnetic valve (21) is connected with an alternating current motor driver (24);
and the inclined multi-way valve switch (4) of the inclined multi-way valve (9) and the lifting multi-way valve switch (3) of the lifting multi-way valve (11) are connected with an alternating current motor driver (24).
2. The system of claim 1, wherein the electric forklift rollover prevention control system comprises: the US end, the VS end and the WS end of the alternating current motor driver (24) are respectively connected with the pump control motor (22) through leads; UM ends, VM ends and WM ends of the alternating current motor driver (24) are respectively connected with the traction motor (23) through conducting wires.
3. The system of claim 1, wherein the electric forklift rollover prevention control system comprises: the +5V, AI4 end and the GND end of the alternating current motor driver (24) are respectively connected with the linear position sensor (5) through leads; the +5V, AI5 end and the GND end of the alternating current motor driver (24) are respectively connected with the weighing sensor (6) through wires; and the +5V, AI6 end and the GND end of the alternating current motor driver (24) are respectively connected with the rotating speed sensor (7) by leads.
4. The system of claim 1, wherein the electric forklift rollover prevention control system comprises: the DI1 end of the alternating current motor driver (24) is connected with a system operation switch (2) through a lead; the DI2 end of the alternating current motor driver (24) is connected with the lifting multi-way valve switch (3) through a lead; the DI3 end of the AC motor driver (24) is connected with the tilt multi-way valve switch (4) by a lead.
5. The system of claim 1, wherein the electric forklift rollover prevention control system comprises: and the RXD, TXD and GND ends of the alternating current motor driver (24) are connected with a display screen (8) through wires.
6. The system of claim 1, wherein the electric forklift rollover prevention control system comprises: the DO1 end of the alternating current motor driver (24) is connected with the switch electromagnetic valve (21) through a lead.
7. The system of claim 1, wherein the electric forklift rollover prevention control system comprises: an L port of the lifting multi-way valve (11) is connected with a P port of a gear pump (15), an M port of the lifting multi-way valve (11) is connected with the P port of the gear pump (15) through a one-way valve II (12), an N port of the lifting multi-way valve (11) is connected with a hydraulic oil tank (14), and a J port of the lifting multi-way valve (11) is connected with a U port of a speed limiting valve (16); and an S port of the speed limiting valve (16) is connected with a rodless cavity of the lifting oil cylinder.
8. The system of claim 7, wherein the cargo tipping control system comprises: the lifting oil cylinder comprises a lifting oil cylinder I (17) and a lifting oil cylinder II (18), and rodless cavities of the lifting oil cylinder I (17) and the lifting oil cylinder II (18) are connected; the linear displacement sensor (5) is arranged on the lifting oil cylinder II (18), and the linear displacement sensor (5) is used for detecting the displacement of a piston rod of the lifting oil cylinder II (18); and the weighing sensor (6) is connected with the rodless cavities of the lifting oil cylinder I (17) and the lifting oil cylinder II (18).
9. The system of claim 7, wherein the cargo tipping control system comprises: an F port of the inclined multi-way valve (9) is connected with an I port of the lifting multi-way valve (11), a G port of the inclined multi-way valve (9) is connected with a P port of the gear pump (15) through a one-way valve I (10), and an H port of the inclined multi-way valve (9) is connected with a hydraulic oil tank (14); a port C of the inclined multi-way valve (9) is connected with a hydraulic oil tank (14), a port D of the inclined multi-way valve (9) is connected with a rod cavity of an inclined oil cylinder, and a port E of the inclined multi-way valve (9) is connected with a port B of a switching electromagnetic valve (21); and an opening A of the switch electromagnetic valve (21) is connected with a rodless cavity of the inclined oil cylinder.
10. The system of claim 9, wherein the cargo tipping control system comprises: the inclined oil cylinder comprises an inclined oil cylinder I (19) and an inclined oil cylinder II (20), the inclined oil cylinder I (19) and the inclined oil cylinder II (20) are communicated through oil pipes for rod cavities, and the inclined oil cylinder I (19) and the inclined oil cylinder II (20) are communicated through oil pipes for rodless cavities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921182273.7U CN210366880U (en) | 2019-07-25 | 2019-07-25 | Goods rollover prevention control system of electric forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921182273.7U CN210366880U (en) | 2019-07-25 | 2019-07-25 | Goods rollover prevention control system of electric forklift |
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| Publication Number | Publication Date |
|---|---|
| CN210366880U true CN210366880U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921182273.7U Withdrawn - After Issue CN210366880U (en) | 2019-07-25 | 2019-07-25 | Goods rollover prevention control system of electric forklift |
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| CN (1) | CN210366880U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110282581A (en) * | 2019-07-25 | 2019-09-27 | 徐州徐工特种工程机械有限公司 | The anti-cargo rollover control system of electri forklift |
-
2019
- 2019-07-25 CN CN201921182273.7U patent/CN210366880U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110282581A (en) * | 2019-07-25 | 2019-09-27 | 徐州徐工特种工程机械有限公司 | The anti-cargo rollover control system of electri forklift |
| CN110282581B (en) * | 2019-07-25 | 2024-05-28 | 徐州徐工特种工程机械有限公司 | Anti-tipping control system for electric forklift |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200421 Effective date of abandoning: 20240528 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200421 Effective date of abandoning: 20240528 |
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| AV01 | Patent right actively abandoned |