CN208089688U - A kind of control system preventing sand throwing extinguishing vehicle impeller rotation overload - Google Patents
A kind of control system preventing sand throwing extinguishing vehicle impeller rotation overload Download PDFInfo
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- CN208089688U CN208089688U CN201820409304.7U CN201820409304U CN208089688U CN 208089688 U CN208089688 U CN 208089688U CN 201820409304 U CN201820409304 U CN 201820409304U CN 208089688 U CN208089688 U CN 208089688U
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Abstract
The utility model discloses a kind of control systems preventing sand throwing extinguishing vehicle impeller rotation overload, diesel engine drives hydraulic pressure main pump and slippage pump, slippage pump is from fuel tank oil suction, fluid is after slippage pump pumps out through damping hole, enter main pump variable oil cylinder by electric proportional pilot valve one, electric proportional pilot valve two, by controlling the voltage value of electric proportional pilot valve one, electric proportional pilot valve two, the displacement control of hydraulic pressure main pump is realized in the fluid disengaging of control main pump variable oil cylinder；Hydraulic pressure main pump outlet connects pressure shut-off valve, and for unloading control oil circuit when system pressure is excessively high, hydraulic pressure discharge of main pump is zero, realizes overload protection；Pressure sensor, which is connected in the pressure tap of pressure shut-off valve, is used for real-time acquisition system pressure, the rotating speed that speed probe is connected with slippage pump shaft for acquiring diesel engine in real time.The generation of the failures such as power surplus or underpower, engine misses can be avoided with real-time matching engine power.
Description
Technical field
The utility model belongs to hydraulic pressure and electrical applications technical field, and in particular to one kind prevents sand throwing extinguishing vehicle impeller from revolving
Turn over the control system of load.
Background technology
Sand throwing extinguishing vehicle is applied to fire-fighting, can be used for avoiding water, foam, carbon dioxide special fire put out, improving
Fire-fighting efficiency reduces in rescue danger etc. development and has played great function, is related to the hair continuously and healthily of national economy
Exhibition.Domestic large size sand throwing extinguishing vehicle is also in blank stage, since the impeller of shedding of sand throwing extinguishing vehicle is main executing agency,
Power is big and performance requirement is high, uses more advanced closed-type cylindrical gearing system to improve system effectiveness, but hydraulic system with it is former
Generally there are some matching problems, such as power surplus or underpower, torque mismatch to even result in engine between motivation
The generation of flame-out failure, especially because prime mover is internal combustion engine, there are change torque characteristics, matching there are the problem of it is very prominent
Go out.
Utility model content
Purpose：In order to overcome the deficiencies in the prior art, the utility model, which provides one kind, preventing sand throwing fire extinguishing Propeller Blade
The control system of wheel rotation overload.
Technical solution：In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of control system preventing sand throwing extinguishing vehicle impeller rotation overload, it is characterised in that：Including hydraulic pressure main pump, main pump
Variable oil cylinder, damping hole, pressure shut-off valve, slippage pump, fuel tank, impeller motor, speed probe, pressure sensor, electric ratio
Pilot valve one, electric proportional pilot valve two, diesel engine；
Diesel engine drives hydraulic pressure main pump and slippage pump,
For slippage pump from fuel tank oil suction, fluid, through damping hole, passes through electric proportional pilot valve one, electric ratio after slippage pump pumps out
Pilot valve two enters main pump variable oil cylinder, by controlling the voltage value of electric proportional pilot valve one, electric proportional pilot valve two, control master
The fluid disengaging for pumping variable oil cylinder, realizes the displacement control of hydraulic pressure main pump；
Hydraulic pressure main pump outlet connects pressure shut-off valve, for control oil circuit to be unloaded when system pressure is excessively high, Hydraulic Main
Pumpage is zero, realizes overload protection；Pressure sensor, which is connected in the pressure tap of pressure shut-off valve, is used for real-time acquisition system pressure
Power, the rotating speed that speed probe is connected with slippage pump shaft for acquiring diesel engine in real time；
Hydraulic pressure main pump outlet parallel connection impeller motor, realizes the rotation of impeller motor.
Preferably, the control system for preventing sand throwing extinguishing vehicle impeller rotation overload, it is characterised in that：Also
Further include high-pressure overflow valve including high-pressure overflow valve, high-pressure overflow valve is connected between A, B mouth of hydraulic pressure main pump, realizes hydraulic pressure system
The safeguard protection of system, and anti-locking system is emptied.
Preferably, the control system for preventing sand throwing extinguishing vehicle impeller rotation overload, it is characterised in that：Also
Including high pressure filter, high pressure filter connection is arranged in repairing pump discharge, realizes the cleanliness control of hydraulic system.
Preferably, the control system for preventing sand throwing extinguishing vehicle impeller rotation overload, it is characterised in that：Also
Including repairing overflow valve, repairing overflow valve is connect by repairing pump discharge, realizes the pressure control of feed circuit.
Preferably, the control system for preventing sand throwing extinguishing vehicle impeller rotation overload, it is characterised in that：Liquid
Main pump outlet parallel connection flushing valve is pressed, and flushing valve is connected with fuel tank, realizes the temperature control of closed system.
Preferably, the control system for preventing sand throwing extinguishing vehicle impeller rotation overload, it is characterised in that：Liquid
Main pump outlet parallel connection communicating valve is pressed, the adjustment and maintenance of impeller are facilitated.
The utility model also provides a kind of control method preventing sand throwing extinguishing vehicle impeller rotation overload：It is set in master controller
It is equipped with engine torque computing module, hydraulic pressure discharge of main pump computing module, contrast module；
In the operational process of system, the signal value of speed probe and pressure sensor is acquired in real time, by diesel engine
The current tachometer value of machine and the maximum working pressure value P of hydraulic system are read in；
After master controller reads in the tachometer value n of engine, calculated under this rotating speed by engine torque computing module
The maximum working pressure value P of Tmax and the hydraulic system of reading is input to hydraulic pressure by the max. output torque value Tmax of engine
Discharge of main pump computing module, hydraulic pressure main pump institute attainable maximum when calculating this operating mode by hydraulic pressure discharge of main pump computing module
Discharge capacity Vc, and it is converted into corresponding output current value ic, ic values enter contrast module, ic values and existing output in contrast module
Electric current id values compare, if ic values are more than id values, continuation is exported according to id values to electric proportional pilot valve amplifier；If ic
Value is less than id values, then exports ic values to electric proportional pilot valve amplifier, signal power is amplified driving electricity by electric proportional amplifier
Proportional pilot valve one, electric proportional pilot valve two.
In real work, loading to increase suddenly can cause hydraulic system pressure P to increase suddenly, and system is according to above-mentioned after increase
Adjusting method adjust electric proportional pilot valve one, electric proportional pilot valve two to adjust the current signal value of output, and then adjust
The discharge capacity of hydraulic pressure main pump makes engine be unlikely to overload, and system is made to be operated in the declared working condition point of engine, to avoid work(
Rate surplus or underpower, torque mismatch the generation for the problems such as even resulting in engine misses.
Advantageous effect：The control system provided by the utility model for preventing sand throwing extinguishing vehicle impeller rotation overload, Ke Yishi
When match engine power, avoid the generation of the failures such as power surplus or underpower, engine misses, engine made to be operated in
Optimal working point greatly reduces human operational error, is provided simultaneously with that efficient, integrated level is high, flexible big advantage.
Description of the drawings
Fig. 1 is the utility model control system hydraulic schematic diagram；
Fig. 2 is the utility model control method schematic diagram；
In figure：Hydraulic pressure main pump 1, main pump variable oil cylinder 2, high-pressure overflow valve 3, high-pressure overflow valve 4, repairing overflow valve 5, damping
Hole 6, pressure shut-off valve 7, slippage pump 8, fuel tank 9, impeller motor 10, impeller motor 11, communicating valve 12, flushing valve 13, rotating speed pass
Sensor 14, pressure sensor 15, high pressure filter 16, electric proportional pilot valve 1, electric proportional pilot valve 2 18, diesel engine
19。
Specific implementation mode
The utility model is further described with reference to specific embodiment.
As shown in Figure 1 and Figure 2, it is a kind of control system preventing sand throwing extinguishing vehicle impeller rotation overload, including hydraulic pressure main pump
1, main pump variable oil cylinder 2, high-pressure overflow valve 3, high-pressure overflow valve 4, repairing overflow valve 5, damping hole 6, pressure shut-off valve 7, repairing
Pump 8, fuel tank 9, impeller motor 10, impeller motor 11, communicating valve 12, flushing valve 13, speed probe 14, pressure sensor 15,
High pressure filter 16, electric proportional pilot valve 1, electric proportional pilot valve 2 18, diesel engine 19.
Diesel engine 19 drives hydraulic pressure main pump 1 and slippage pump 8, high-pressure overflow valve 3,4 to be connected on 1 outlet of hydraulic pressure main pump
Between, realize the safeguard protection of hydraulic system, and anti-locking system is emptied.Slippage pump 8 is pumped out from 9 oil suction of fuel tank, fluid through slippage pump 8
By high pressure filter 16, damping hole 6, main pump variable oil is entered by electric proportional pilot valve 1, electric proportional pilot valve 2 18
Cylinder 2, by controlling the voltage value of electric proportional pilot valve 1, electric proportional pilot valve 2 18, the fluid of control main pump variable oil cylinder 2
The displacement control of hydraulic pressure main pump 1 is realized in disengaging；The outlet of slippage pump 8 connection high pressure filter 16, realizes the cleannes of hydraulic system
Control；Slippage pump 8 exports side and connects repairing overflow valve 5, realizes the pressure control of feed circuit.The outlet of hydraulic pressure main pump 1 connects pressure and cuts
Disconnected valve 7 can unload control oil circuit when system pressure is excessively high, and 1 discharge capacity of hydraulic pressure main pump is zero, realizes overload protection, and energy
It is lost small.Pressure sensor 15 is connected in the pressure tap of pressure shut-off valve 7 real-time acquisition system pressure, speed probe 14 and benefit
8 shaft of oil pump is connected acquires the rotating speed of diesel engine 19 in real time.Hydraulic pressure main pump 1 exports flushing valve 13 in parallel, and flushing valve 13
Be connected with fuel tank 9, realize closed system temperature control, hydraulic pressure main pump 1 export simultaneously even communicating valve 12, facilitate impeller adjustment and
It safeguards, hydraulic pressure main pump 1 exports impeller motor 10,11 in parallel, realizes the rotation of impeller motor 10,11.
As shown in Fig. 2, operating process：In the operational process of system, controller acquires speed probe 14 and pressure in real time
The signal value of force snesor 15 reads in the maximum working pressure value P of the current tachometer value of diesel engine 19 and hydraulic system.
After master controller reads in the tachometer value n of engine, engine under this rotating speed is calculated by engine torque computing module
The maximum working pressure value P of Tmax and the hydraulic system of reading is input to hydraulic pressure discharge of main pump by max. output torque value Tmax
Computing module, 1 institute attainable maximum pump discharge Vc of hydraulic pressure main pump when calculating this operating mode by the module, and be converted into corresponding
Output current value ic, ic value enter contrast module, ic values are compared with existing output current id values in the module, if ic values
Then continue to export to electric proportional pilot valve amplifier according to id values more than id values, if ic values be less than id values if by ic values export to
Signal power is amplified the electric proportional pilot valve 1 of driving, electric proportion pilot by electric proportional pilot valve amplifier, electric proportional amplifier
Valve 2 18.In real work, loading to increase suddenly can cause hydraulic system pressure P to increase suddenly, and system is according to above-mentioned after increase
Adjusting method adjust electric proportional pilot valve 1, electric proportional pilot valve 2 18 to adjust the current signal value of output, in turn
The discharge capacity for adjusting hydraulic pressure main pump 1, makes engine be unlikely to overload, and system is made to be operated in the declared working condition point of engine, to
Power surplus or underpower, torque is avoided to mismatch the generation for the problems such as even resulting in engine misses.
The above is only the preferred embodiment of the utility model, it should be pointed out that：For the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (6)
1. a kind of control system preventing sand throwing extinguishing vehicle impeller rotation overload, it is characterised in that：Become including hydraulic pressure main pump, main pump
It is first to measure oil cylinder, damping hole, pressure shut-off valve, slippage pump, fuel tank, impeller motor, speed probe, pressure sensor, electric ratio
Pilot valve one, electric proportional pilot valve two, diesel engine；
Diesel engine drives hydraulic pressure main pump and slippage pump,
For slippage pump from fuel tank oil suction, fluid, through damping hole, passes through electric proportional pilot valve one, electric proportion pilot after slippage pump pumps out
Valve two enters main pump variable oil cylinder, and by controlling the voltage value of electric proportional pilot valve one, electric proportional pilot valve two, control main pump becomes
The fluid disengaging for measuring oil cylinder, realizes the displacement control of hydraulic pressure main pump；
Hydraulic pressure main pump outlet connects pressure shut-off valve, for control oil circuit to be unloaded when system pressure is excessively high, hydraulic pressure main pump row
Amount is zero, realizes overload protection；Pressure sensor, which is connected in the pressure tap of pressure shut-off valve, is used for real-time acquisition system pressure, turns
The rotating speed that fast sensor is connected with slippage pump shaft for acquiring diesel engine in real time；
Hydraulic pressure main pump outlet parallel connection impeller motor, realizes the rotation of impeller motor.
2. the control system according to claim 1 for preventing sand throwing extinguishing vehicle impeller rotation overload, it is characterised in that：Also wrap
High-pressure overflow valve is included, further includes high-pressure overflow valve, high-pressure overflow valve is connected between A, B mouth of hydraulic pressure main pump, realizes hydraulic system
Safeguard protection, and anti-locking system is emptied.
3. the control system according to claim 1 for preventing sand throwing extinguishing vehicle impeller rotation overload, it is characterised in that：Also wrap
High pressure filter is included, high pressure filter connection is arranged in repairing pump discharge, realizes the cleanliness control of hydraulic system.
4. the control system according to claim 1 for preventing sand throwing extinguishing vehicle impeller rotation overload, it is characterised in that：Also wrap
Repairing overflow valve is included, repairing overflow valve is connect by repairing pump discharge, realizes the pressure control of feed circuit.
5. the control system according to claim 1 for preventing sand throwing extinguishing vehicle impeller rotation overload, it is characterised in that：Hydraulic pressure
Main pump outlet parallel connection flushing valve, and flushing valve is connected with fuel tank, realizes the temperature control of closed system.
6. the control system according to claim 1 for preventing sand throwing extinguishing vehicle impeller rotation overload, it is characterised in that：Hydraulic pressure
Main pump outlet parallel connection communicating valve facilitates the adjustment and maintenance of impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820409304.7U CN208089688U (en) | 2018-03-26 | 2018-03-26 | A kind of control system preventing sand throwing extinguishing vehicle impeller rotation overload |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820409304.7U CN208089688U (en) | 2018-03-26 | 2018-03-26 | A kind of control system preventing sand throwing extinguishing vehicle impeller rotation overload |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208089688U true CN208089688U (en) | 2018-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820409304.7U Active CN208089688U (en) | 2018-03-26 | 2018-03-26 | A kind of control system preventing sand throwing extinguishing vehicle impeller rotation overload |
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| CN (1) | CN208089688U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317132A (en) * | 2018-03-26 | 2018-07-24 | 徐工集团工程机械有限公司 | A kind of control system preventing sand throwing extinguishing vehicle impeller rotation overload |
-
2018
- 2018-03-26 CN CN201820409304.7U patent/CN208089688U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317132A (en) * | 2018-03-26 | 2018-07-24 | 徐工集团工程机械有限公司 | A kind of control system preventing sand throwing extinguishing vehicle impeller rotation overload |
| CN108317132B (en) * | 2018-03-26 | 2024-04-02 | 江苏徐工工程机械研究院有限公司 | Control system for preventing rotation overload of impeller of sand throwing fire extinguishing vehicle |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220720 Address after: No.26 tuolanshan Road, Xuzhou Economic and Technological Development Zone, Xuzhou City, Jiangsu Province Patentee after: JIANGSU XUGONG ENGINEERING MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: 221004 26 Jinshan Road, Jinshan Bridge Economic Development Zone, Xuzhou, Jiangsu Patentee before: XCMG CONSTRUCTION MACHINERY Co.,Ltd. |