CN208700497U - Electrohydraulic pressure control controls air inlet disconnecting device and fork truck - Google Patents
Electrohydraulic pressure control controls air inlet disconnecting device and fork truck Download PDFInfo
- Publication number
- CN208700497U CN208700497U CN201820484737.9U CN201820484737U CN208700497U CN 208700497 U CN208700497 U CN 208700497U CN 201820484737 U CN201820484737 U CN 201820484737U CN 208700497 U CN208700497 U CN 208700497U
- Authority
- CN
- China
- Prior art keywords
- air inlet
- stop valve
- pressure
- oil
- inlet stop
- 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.)
- Withdrawn - After Issue
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- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model relates to a kind of electrohydraulic pressure control control air inlet disconnecting device and fork trucks.Simple, good reliability that the purpose of the utility model is to provide a kind of structures, reaction speed fast electrohydraulic pressure control control air inlet disconnecting device and fork truck.The technical solution of the utility model is: a kind of electrohydraulic pressure control control air inlet disconnecting device is comprising: air inlet stop valve；Air inlet stop valve handle is connected through bracing wire with the air inlet stop valve, with air inlet stop valve synchronization action, cuts off threshold switch for controlling air inlet；Oil sector is connected to the air inlet stop valve, and the open state of air inlet stop valve is maintained for the pressure by 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 utility model is suitable for explosion-proof diesel fork lift truck and other explosion-proof internal combustion engineering machinery vehicles.
Description
Technical field
The utility model relates to a kind of electrohydraulic pressure control control air inlet disconnecting device and fork trucks.Suitable for explosion-proof diesel fork lift truck,
And other explosion-proof internal combustion engineering machinery vehicles.
Background technique
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 cutting air inlet problem since vehicle is impacted suddenly.There is emergency to need
When emergency cut-off inlet channel, driver's judgement and hand off air inlet are needed, not in time, explosion proof forklift is in hazardous environment for cutting
It uses, when hypervelocity phenomenon occurs in explosion-proof vehicle, vehicle temperature, speed will be risen 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.
Summary of the invention
Technical problem to be solved by the utility model is: in view of the above problems, it is simple, reliable to provide a kind of structure
Property good, electrohydraulic pressure control that reaction speed is fast control air inlet disconnecting device and fork truck.
The technical scheme adopted by the utility model is a kind of electrohydraulic pressure control controls air inlet disconnecting device, which is characterized in that
It includes
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.
The oil sector has three-way connection, and the connector I of the three-way connection connects 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:
For pressure cut off solenoid valve power supply, conduct the pressure energy that oil pressure source generates in oil sector 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, maintains air inlet to cut 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, conducts oil sector to the pressure 0 of air inlet stop valve, air inlet cutting
Valve returns to closed state, returns to initial position with the air inlet stop valve handle of air inlet stop valve synchronization action.
A kind of fork truck, it is characterised in that: control air inlet disconnecting device with the electrohydraulic pressure control.
After the key switch of the fork truck powers on, the pressure cut off electromagnetism in air inlet disconnecting device is controlled for the electrohydraulic pressure control
Valve power supply；
After fork truck vehicle starting, 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 utility model are: pressure cut off solenoid valve control pressure in the utility model, pressure control into
Gas stop valve, so as to be implemented in combination with intelligent control air inlet cutting with control system.In the utility model by pressure maintain into
The open state of gas stop valve, so as to by the open state of air inlet stop valve, judge to generate pressure components whether
It works normally.So that air inlet cutting function it is relatively reliable, much sooner, it is more intelligent, also make vehicle safer.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment.
Specific embodiment
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 cutting
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 rocker 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 have I, II, III 3 connector of connector, and center tap I connects oil pressure source through oil pipe I 3, and connector II cooperates 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.
After key switch in the present embodiment in fork truck powers on, pressure cut off solenoid valve 9, which is powered, is closed；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 starting, 4 closed state of air inlet stop valve, pressure cut off solenoid valve 9 is opened.
When needing to start vehicle, after key switch powers on, pressure cut off solenoid valve 9 be powered close, while be manually operated into
Gas stop valve handle 1 controls the control rocker arm opening air inlet stop valve 4 of air inlet stop valve 4 by bracing wire 2 and keeps (by keeping hand
Handle position, to keep 4 opening state of air inlet stop valve).
Start vehicle, after starting 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, decontrols air inlet at this time and cuts
Disconnected valve handle 1, air inlet stop valve handle 1 can also maintain position when air inlet 4 open state of stop valve, and vehicle operates normally.
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 cutting
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 with the control rocker arm of air inlet stop valve 4 through bracing wire 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 cutting with control system.
Claims (5)
1. a kind of electrohydraulic pressure control control air inlet disconnecting device comprising:
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 maintaining air inlet to cut by the pressure of hydraulic oil in oil sector
The open state of disconnected valve (4)；
The pressure cut off for the hydraulic fluid pressure that there is the oil sector control oil sector to be defeated by the air inlet stop valve (4) is electric
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. a kind of fork truck, it is characterised in that: have the control air inlet cutting of electrohydraulic pressure control described in claims 1 to 3 any one
Device.
5. fork truck according to claim 4, it is characterised in that: the air inlet in the electrohydraulic pressure control control air inlet disconnecting device
Stop valve handle (1) is installed on the overhead guard legging of fork truck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820484737.9U CN208700497U (en) | 2018-04-08 | 2018-04-08 | Electrohydraulic pressure control controls air inlet disconnecting device and fork truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820484737.9U CN208700497U (en) | 2018-04-08 | 2018-04-08 | Electrohydraulic pressure control controls air inlet disconnecting device and fork truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208700497U true CN208700497U (en) | 2019-04-05 |
Family
ID=65913312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820484737.9U Withdrawn - After Issue CN208700497U (en) | 2018-04-08 | 2018-04-08 | Electrohydraulic pressure control controls air inlet disconnecting device and fork truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208700497U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108439274A (en) * | 2018-04-08 | 2018-08-24 | 杭叉集团股份有限公司 | Electrohydraulic pressure control controls air inlet disconnecting device and its operating method, fork truck |
-
2018
- 2018-04-08 CN CN201820484737.9U patent/CN208700497U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108439274A (en) * | 2018-04-08 | 2018-08-24 | 杭叉集团股份有限公司 | Electrohydraulic pressure control controls air inlet disconnecting device and its operating method, fork truck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190405 Effective date of abandoning: 20230620 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190405 Effective date of abandoning: 20230620 |