CN108439274A - Electrohydraulic pressure control controls air inlet disconnecting device and its operating method, fork truck - Google Patents
Electrohydraulic pressure control controls air inlet disconnecting device and its operating method, fork truck Download PDFInfo
- Publication number
- CN108439274A CN108439274A CN201810305329.7A CN201810305329A CN108439274A CN 108439274 A CN108439274 A CN 108439274A CN 201810305329 A CN201810305329 A CN 201810305329A CN 108439274 A CN108439274 A CN 108439274A
- Authority
- CN
- China
- Prior art keywords
- air inlet
- stop valve
- pressure
- inlet stop
- oil
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/0759—Details of operating station, e.g. seats, levers, operator platforms, cabin suspension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/07504—Accessories, e.g. for towing, charging, locking
Abstract
The present invention relates to a kind of electrohydraulic pressure control control air inlet disconnecting device and its operating method, fork trucks.The object of the present invention is to provide the fast electrohydraulic pressure control control air inlet disconnecting device of a kind of simple in structure, good reliability, reaction speed and its operating method, fork trucks.The technical scheme is that：A kind of electrohydraulic pressure control control air inlet disconnecting device, which is characterized in that have：Air inlet stop valve；Air inlet stop valve handle is connected through bracing wire with the air inlet stop valve, and with air inlet stop valve synchronization action, threshold switch is cut off for controlling air inlet；Oil sector is connected to the air inlet stop valve, the open state for maintaining air inlet stop valve by the pressure of hydraulic oil in oil sector；The oil sector has the pressure cut off solenoid valve for controlling the hydraulic fluid pressure that oil sector is defeated by the air inlet stop valve.The present invention is suitable for explosion-proof diesel fork lift truck and other explosion-proof internal combustion engineering machinery vehicles.
Description
Technical field
The present invention relates to a kind of electrohydraulic pressure control control air inlet disconnecting device and its operating method, fork trucks.Suitable for explosion-proof interior
Fire fork truck and other explosion-proof internal combustion engineering machinery vehicles.
Background technology
All using explosion-proof engine as dynamical system, explosion-proof engine is required with air inlet cutting function explosion proof forklift,
Explosion-proof engine air inlet is cut off when hypervelocity out-of-control phenomenon occurs in only explosion-proof engine, explosion-proof engine is made to stop.
The air inlet disconnecting device both at home and abroad on explosion proof forklift is mechanically controlled type air inlet disconnecting device at present, and there are structures
Complexity, and be easy to lead to mechanical mechanism accidentally cut-out air inlet problem since vehicle is impacted suddenly.There is emergency to need
When emergency cut-off inlet channel, driver is needed to judge simultaneously hand off air inlet, not in time, explosion proof forklift is in hazardous environment for cut-out
It uses, when hypervelocity phenomenon occurs in explosion-proof vehicle, vehicle temperature, speed will rise rapidly and out of hand, if operation is too late
When, vehicle temperature will be more than limit temperature quickly, and speed runaway, it is easy to and shock accident is caused, or hits and generates spark, and
Light combustible gas admixture of gas and combustible dust.
Invention content
The technical problem to be solved by the present invention is to：In view of the above problems, a kind of simple in structure, reliability is provided
The electrohydraulic pressure control control air inlet disconnecting device good, reaction speed is fast and its operating method, fork truck.
The technical solution adopted in the present invention is：A kind of electrohydraulic pressure control control air inlet disconnecting device, which is characterized in that tool
Have：
Air inlet stop valve；
Air inlet stop valve handle is connected through bracing wire with the air inlet stop valve, and air inlet stop valve synchronization action, for controlling
Threshold switch is cut off in air inlet processed；
Oil sector is connected to the air inlet stop valve, for maintaining air inlet by the pressure of hydraulic oil in oil sector
The open state of stop valve；
The oil sector has the pressure cut off for controlling the hydraulic fluid pressure that oil sector is defeated by the air inlet stop valve
Solenoid valve.
There is the oil sector three-way connection, the connector I of the three-way connection to connect oil pressure source through oil pipe I, three-way connection
Connector II connects the air inlet stop valve through oil pipe II, and the connector III of three-way connection is through the pressure cut off solenoid valve and oil pipe III
Connect fuel tank.
The pressure cut off solenoid valve uses normally open solenoid valve.
A kind of operating method of the electrohydraulic pressure control control air inlet disconnecting device, it is characterised in that：
It powers for the pressure cut off solenoid valve, the pressure energy that oil pressure source generates in oil sector is made to conduct to the air inlet
Stop valve；
It operates air inlet stop valve handle and air inlet stop valve opening is controlled by bracing wire, and be kept open；
Oil pressure source generates pressure in oil sector, and by pressure conduction to air inlet stop valve, is maintained into autogenous cutting by pressure
Disconnected the valve opening state, decontrols air inlet stop valve handle at this time；
Stop being that pressure cut off solenoid valve is powered, it is 0 to make oil sector conduct to the pressure of air inlet stop valve, air inlet cut-out
Valve returns to closed state, and initial position is returned to the air inlet stop valve handle of air inlet stop valve synchronization action.
A kind of fork truck, it is characterised in that：Air inlet disconnecting device is controlled with the electrohydraulic pressure control.
The key switch of the fork truck controls the pressure cut off electromagnetism in air inlet disconnecting device after the power is turned on, for the electrohydraulic pressure control
Valve is powered；
After the fork truck vehicle starts, electrohydraulic pressure control controls the oil pressure source in air inlet disconnecting device and generates pressure；
After closing fork truck key, electrohydraulic pressure control controls the pressure cut off solenoid valve power-off in air inlet disconnecting device.
Air inlet stop valve handle in the electrohydraulic pressure control control air inlet disconnecting device is installed on the overhead guard legging of fork truck
On.
The beneficial effects of the invention are as follows：Pressure cut off solenoid valve control pressure in the present invention, pressure control air inlet stop valve,
So as to be implemented in combination with intelligent control air inlet cut-out with control system.The unlatching of air inlet stop valve is maintained in the present invention by pressure
State, so as to by the open state of air inlet stop valve, judge whether the parts for generating pressure work normally.So that into
Gas cutting function is relatively reliable, much sooner, it is more intelligent, also make vehicle safer.
Description of the drawings
Fig. 1 is the structural schematic diagram of embodiment.
Specific implementation mode
The present embodiment is a kind of fork truck, and there is electrohydraulic pressure control to control air inlet disconnecting device, and electrohydraulic pressure control controls air inlet cut-out
Device includes air inlet stop valve 4, air inlet stop valve handle 1 and oil sector.
Wherein air inlet stop valve handle 1 is bolted on the overhead guard legging of fork truck, and air inlet stop valve handle 1 is logical
It crosses bracing wire cooperation pin to connect with the control rocking arm of air inlet stop valve 4, with 4 synchronization action of air inlet stop valve.
Oil sector includes three-way connection 7 and pressure cut off solenoid valve 9 (normally open solenoid valve), three-way connection in the present embodiment
7 there is connector I, II, III 3 connector, center tap I to connect oil pressure source through oil pipe I 3, and connector II coordinates adapter piece 5 through oil pipe II 6
Air inlet stop valve 4 is connected, 9 both ends of pressure cut off solenoid valve are connected through a screw thread adapter piece 5, and the connector III of three-way connection 7 passes through
It is threadedly secured on the adapter piece 5 of 9 one end of pressure cut off solenoid valve, the adapter piece 5 of 9 other end of pressure cut off solenoid valve passes through spiral shell
Line is connect with one end of oil pipe III 10, and the other end of oil pipe III 10 is connected to fuel tank.
In the present embodiment the key switch of fork truck after the power is turned on, pressure cut off solenoid valve 9 be powered close；Start in vehicle
Afterwards, the oil pressure source in electrohydraulic pressure control control air inlet disconnecting device generates pressure；After closing fork truck key, electrohydraulic pressure control controls air inlet
Pressure cut off solenoid valve 9 in disconnecting device powers off, and returns to open state.
The operating method of the present embodiment is as follows：
Before vehicle starts, 4 closed state of air inlet stop valve, pressure cut off solenoid valve 9 is opened.
Need start vehicle when, key switch after the power is turned on, pressure cut off solenoid valve 9 be powered close, while be manually operated into
Gas stop valve handle 1 controls 4 control rocking arm opening air inlet stop valve 4 of air inlet stop valve by bracing wire 2 and keeps (by keeping hand
Handle position, to keep 4 opening state of air inlet stop valve).
Start vehicle, after startup oil pressure source (gearbox, engine etc.) generate pressure, by oil pipe I 3, three-way connection 7,
Oil pipe II 6 maintains 4 open state of air inlet stop valve by pressure conduction to air inlet stop valve 4, by pressure, is decontroled at this time into autogenous cutting
Disconnected valve handle 1, air inlet stop valve handle 1 can also maintain position when air inlet 4 open state of stop valve, vehicle normal operation.
When flame-out, key switch is closed, the power-off of pressure cut off solenoid valve 9 returns to open state, oil pipe I 3 and oil pipe III 10
It connects, and pressure is 0 in fuel tank, therefore pressure is also 0 in oil pipe II 6, air inlet stop valve 4 returns to closed state, air inlet cut-out
The return under the effect of valve spring elastic force of valve 4, returns to closed state, air inlet stop valve 4 is closed, to cut off engine charge.
At this point, the air inlet stop valve handle 1 being connected through bracing wire with the control rocking arm of air inlet stop valve 4 returns to initially under the action of bracing wire
Position.
In the present embodiment, pressure cut off solenoid valve 9 can also be implemented in combination with intelligent control air inlet cut-out with control system.
Claims (7)
1. a kind of electrohydraulic pressure control controls air inlet disconnecting device, which is characterized in that have：
Air inlet stop valve (4)；
Air inlet stop valve handle (1) is connected through bracing wire (2) with the air inlet stop valve (4), synchronous with air inlet stop valve (4) dynamic
Make, for controlling air inlet stop valve (4) switch；
Oil sector is connected to the air inlet stop valve (4), for being maintained into autogenous cutting by the pressure of hydraulic oil in oil sector
The open state of disconnected valve (4)；
The oil sector has the pressure cut off electricity for controlling the hydraulic fluid pressure that oil sector is defeated by the air inlet stop valve (4)
Magnet valve (9).
2. electrohydraulic pressure control according to claim 1 controls air inlet disconnecting device, it is characterised in that：The oil sector has
The connector I of three-way connection (7), the three-way connection connects oil pressure source through oil pipe I (3), and the connector II of three-way connection (7) is through oil pipe II
(6) the air inlet stop valve (4) is connected, the connector III of three-way connection (7) is through the pressure cut off solenoid valve (9) and oil pipe III
(10) fuel tank is connected.
3. electrohydraulic pressure control according to claim 2 controls air inlet disconnecting device, it is characterised in that：The pressure cut off electromagnetism
Valve (9) uses normally open solenoid valve.
4. the operating method of electrohydraulic pressure control control air inlet disconnecting device, feature described in a kind of claims 1 to 3 any one exist
In：
It powers for the pressure cut off solenoid valve (9), the pressure energy that oil pipe III (10) generates in oil sector is made to conduct to described
Air inlet stop valve (4)；
It operates air inlet stop valve handle (1) and air inlet stop valve (4) opening is controlled by bracing wire (2), and be kept open；
Oil pipe III (10) generates pressure in oil sector, and pressure conduction is maintained air inlet to air inlet stop valve (4) by pressure
Stop valve (4) opening state decontrols air inlet stop valve handle (1) at this time；
Stop being that pressure cut off solenoid valve (9) is powered, it is 0 to make oil sector conduct to the pressure of air inlet stop valve (4), into autogenous cutting
Disconnected valve (4) returns to closed state, and initial position is returned to the air inlet stop valve handle (1) of air inlet stop valve (4) synchronization action.
5. a kind of fork truck, it is characterised in that：With the electrohydraulic pressure control control air inlet cut-out described in claims 1 to 3 any one
Device.
6. fork truck according to claim 5, it is characterised in that：
The key switch of the fork truck controls the pressure cut off solenoid valve in air inlet disconnecting device after the power is turned on, for the electrohydraulic pressure control
(9) it powers；
After the fork truck vehicle starts, electrohydraulic pressure control controls the oil pipe III (10) in air inlet disconnecting device and generates pressure；
After closing fork truck key, electrohydraulic pressure control controls pressure cut off solenoid valve (9) power-off in air inlet disconnecting device.
7. fork truck according to claim 5 or 6, it is characterised in that：In the electrohydraulic pressure control control air inlet disconnecting device
Air inlet stop valve handle (1) is installed on the overhead guard legging of fork truck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810305329.7A CN108439274B (en) | 2018-04-08 | 2018-04-08 | Electric control pressure control air inlet cutting device, operation method thereof and forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810305329.7A CN108439274B (en) | 2018-04-08 | 2018-04-08 | Electric control pressure control air inlet cutting device, operation method thereof and forklift |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108439274A true CN108439274A (en) | 2018-08-24 |
| CN108439274B CN108439274B (en) | 2023-06-20 |
Family
ID=63198614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810305329.7A Active CN108439274B (en) | 2018-04-08 | 2018-04-08 | Electric control pressure control air inlet cutting device, operation method thereof and forklift |
Country Status (1)
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| CN (1) | CN108439274B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0037269A1 (en) * | 1980-03-28 | 1981-10-07 | Engine Control Industries Ltd. | Engine cylinder cutout system |
| JPH08159107A (en) * | 1994-12-08 | 1996-06-18 | Mikasa Sangyo Kk | Automatic control device for road roller |
| WO2010123378A1 (en) * | 2009-04-22 | 2010-10-28 | Tor Henrik Vik | Recycling of energy |
| CN105347257A (en) * | 2015-11-27 | 2016-02-24 | 衡阳合力工业车辆有限公司 | Explosion-proof diesel fork lift truck |
| CN208700497U (en) * | 2018-04-08 | 2019-04-05 | 杭叉集团股份有限公司 | Electrohydraulic pressure control controls air inlet disconnecting device and fork truck |
-
2018
- 2018-04-08 CN CN201810305329.7A patent/CN108439274B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0037269A1 (en) * | 1980-03-28 | 1981-10-07 | Engine Control Industries Ltd. | Engine cylinder cutout system |
| JPH08159107A (en) * | 1994-12-08 | 1996-06-18 | Mikasa Sangyo Kk | Automatic control device for road roller |
| WO2010123378A1 (en) * | 2009-04-22 | 2010-10-28 | Tor Henrik Vik | Recycling of energy |
| CN105347257A (en) * | 2015-11-27 | 2016-02-24 | 衡阳合力工业车辆有限公司 | Explosion-proof diesel fork lift truck |
| CN208700497U (en) * | 2018-04-08 | 2019-04-05 | 杭叉集团股份有限公司 | Electrohydraulic pressure control controls air inlet disconnecting device and fork truck |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108439274B (en) | 2023-06-20 |
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