CN203062948U - Hydraulic pilot control system of oil-liquid hybrid power concrete mixer truck - Google Patents
Hydraulic pilot control system of oil-liquid hybrid power concrete mixer truck Download PDFInfo
- Publication number
- CN203062948U CN203062948U CN 201220733956 CN201220733956U CN203062948U CN 203062948 U CN203062948 U CN 203062948U CN 201220733956 CN201220733956 CN 201220733956 CN 201220733956 U CN201220733956 U CN 201220733956U CN 203062948 U CN203062948 U CN 203062948U
- Authority
- CN
- China
- Prior art keywords
- oil
- pump
- hydraulic
- way electromagnetic
- 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
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a hydraulic pilot control system of an oil-liquid hybrid power concrete mixer truck, and belongs to the technical of hydraulic pressure. An engine (1), a power takeoff (2), a closed variable pump (3) and a pilot pump (4) are connected in sequence; oil ports A and B of the closed variable pump (3) are respectively connected with oil ports A and B of a closed system hydraulic motor (11); an oil suction filter (10) is connected between an oil suction port of the pilot pump (4) and an oil tank (9); a pressure oil port of the pilot pump (4) is connected with an oil inlet of a check valve (5); an oil outlet of the check valve (5) is respectively communicated with an oil inlet of an overflow valve (8) and a P port of a two-station four-way electromagnetic directional valve (6); and oil ports T and A of the two-station four-way electromagnetic directional valve (6) are connected with an oil return port of the overflow valve (8) and then connected with the oil tank (9) together. The system greatly reduces throttling loss and system heating, and the pressure of an energy accumulator is not influenced.
Description
Technical field
The utility model relates to a kind of oil-liquid hybrid electric concrete mixer truck, specifically is a kind of hydraulic pilot control system of oil-liquid hybrid electric concrete mixer truck.
Background technology
The oil-liquid hybrid electric technology is applied to engineering machinery field just more and more owing to can reduce fuel consumption and the toxic emission of vehicle significantly.Hydraulic pump motor both can be operated in the pump operating mode as the energy conversion unit of oil-liquid hybrid electric hydraulic system, also can be operated in the motor operating mode, realized the power conversion between inertia kinetic energy (or gravitional force) and the hydraulic pressure energy whereby.Hydraulic pump motor can be adjusted the discharge capacity of self according to the level of torque of loading demand, to reach the purpose that the output torque adapts to load torque.Therefore, hydraulic pump motor needs a hydraulic pilot control system that a stabilizes forerunner controlled pressure is provided, and is used for driving the stroking mechanism of hydraulic pump motor, and then changes the discharge capacity of hydraulic pump motor.
At present, the oil-liquid hybrid electric hydraulic system is that the form that adopts accumulator to add pressure-reducing valve provides guide's controlled pressure for hydraulic pump motor.In this manner, the hydraulic oil that accumulator stores, even under the idle state of hybrid-power hydraulic system also always some hydraulic oil flow away from pressure-reducing valve, increased the heating of restriction loss and system, and low when high when causing the pressure in the accumulator, influenced the performance of whole hybrid-power hydraulic system; In addition, the pressure of accumulator changes the instability of flow that causes by pressure-reducing valve, has influenced the discharge capacity control accuracy of hydraulic pump motor greatly.
Summary of the invention
Problem at above-mentioned prior art existence, the utility model provides a kind of hydraulic pilot control system of oil-liquid hybrid electric concrete mixer truck, under the situation that does not influence the accumulator internal pressure, for the hydraulic pump motor of oil-liquid hybrid electric concrete mixer truck provides the stabilizes forerunner controlled pressure, to realize the discharge capacity control to hydraulic pump motor.
To achieve these goals, the technical solution adopted in the utility model is: a kind of hydraulic pilot control system of oil-liquid hybrid electric concrete mixer truck, comprise engine, power takeoff, the enclosed variable pump, pioneer pump, check valve, two four-way electromagnetic reversing valves, hydraulic pump motor, overflow valve, fuel tank and oil suction filter, engine, power takeoff, the enclosed variable pump is connected successively with pioneer pump, the A of enclosed variable pump, the B hydraulic fluid port respectively with the A of closed system hydraulic motor, the B hydraulic fluid port connects, be connected an oil suction filter between the inlet port of pioneer pump and the fuel tank, the pressure hydraulic fluid port of pioneer pump is connected with the oil-in of check valve, the oil-out of check valve is communicated with the oil-in of overflow valve and the P mouth of two four-way electromagnetic reversing valves respectively, the T of two four-way electromagnetic reversing valves, the A hydraulic fluid port is connected with the oil return opening of overflow valve and together is connected to fuel tank, and the B mouth of two four-way electromagnetic reversing valves is connected with guide's control port of hydraulic pump motor.
The enclosed variable pump is the axis driving pump, adopts spline to be connected between enclosed variable pump and the pioneer pump and is provided with sealing mechanism.
Check valve, two four-way electromagnetic reversing valves and overflow valve are integrated into superposing type valve piece or cartridge valve piece.
Compare with existing apparatus, the utility model is crossed the original closed type hydraulic system of repacking trucd mixer, pioneer pump is linked to each other with the enclosed variable pump, thereby take the power of engine indirectly, for hydraulic pump motor provides the stabilizes forerunner controlled pressure; This level of integrated system height has significantly reduced the heating of restriction loss and system, and does not influence the pressure of the accumulator in the oil-liquid hybrid electric hydraulic system.
Description of drawings
Fig. 1 is the utility model hydraulic schematic diagram.
Among the figure: 1, engine, 2, power takeoff, 3, the enclosed variable pump, 4, pioneer pump, 5, check valve, 6, two four-way electromagnetic reversing valves, 7, hydraulic pump motor, 8, overflow valve, 9, fuel tank, 10, the oil suction filter, 11, the closed system hydraulic motor.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, the hydraulic pilot control system of a kind of oil-liquid hybrid electric concrete mixer truck of the utility model, comprise engine 1, power takeoff 2, enclosed variable pump 3, pioneer pump 4, check valve 5, two four-way electromagnetic reversing valves 6, hydraulic pump motor 7, overflow valve 8, fuel tank 9 and oil suction filter 10, engine 1, power takeoff 2, enclosed variable pump 3 is connected successively with pioneer pump 4, the A of enclosed variable pump 3, the B hydraulic fluid port respectively with the A of closed system hydraulic motor 11, the B hydraulic fluid port connects, be connected an oil suction filter 10 between the inlet port of pioneer pump 4 and the fuel tank 9, the pressure hydraulic fluid port of pioneer pump 4 is connected with the oil-in of check valve 5, the oil-out of check valve 5 is communicated with the oil-in of overflow valve 8 and the P mouth of two four-way electromagnetic reversing valves 6 respectively, the T of two four-way electromagnetic reversing valves 6, the A hydraulic fluid port is connected the B mouth that also together is connected to 9, two four-way electromagnetic reversing valves 6 of fuel tank and is connected with guide's control port of hydraulic pump motor 7 with the oil return opening of overflow valve 8.
Power takeoff 2 is integrated on the engine 1, power takeoff 2 is connected by a brief biography moving axis with enclosed variable pump 3, enclosed variable pump 3 is a kind of axis driving pump, adopts spline to be connected between enclosed variable pump 3 and the pioneer pump 4 and is provided with hermetically-sealed construction, so that the closure of maintenance system.Check valve 5, two four-way electromagnetic reversing valves 6 and overflow valve 8 are integrated into superposing type valve piece or cartridge valve piece, have simplified the fluid pressure line connection.
After engine 1 started, by the effect of power takeoff 2, enclosed variable pump 3 and pioneer pump 4 kept the rotating speed operation of 1:1 simultaneously with engine 1.Enclosed variable pump 3 output hydraulic oils drive 11 work of closed system hydraulic motor, thereby drive the mixing drum rotation.Pioneer pump 4 is from fuel tank 9 oil suctions, and the guide controls oil enters into hydraulic pump motor 7 through check valve 5, overflow valve 8 and two four-way electromagnetic reversing valves 6 guide's control port.Can change the size of guide's control-oil pressure at any time by the spring force of regulating overflow valve 8.Under normal conditions, two four-way electromagnetic reversing valves 6 must not be electric, and two four-way electromagnetic reversing valves 6 work in position, a left side, and the guide controls oil directly flows back to fuel tank 9 from the A mouth of two four-way electromagnetic reversing valves 6; Only in needs oil-liquid hybrid electric hydraulic work system, two four-way electromagnetic reversing valves 6 just electric and work in right position, the guide is controlled oil be delivered to hydraulic pump motor 7, this has significantly reduced restriction loss and system's heating, and does not influence the pressure of accumulator.Be that pioneer pump 4 is in Light Condition always under the idle state of oil-liquid hybrid electric hydraulic system.
Claims (3)
1. the hydraulic pilot control system of an oil-liquid hybrid electric concrete mixer truck, comprise engine (1), power takeoff (2), enclosed variable pump (3), pioneer pump (4), check valve (5), two four-way electromagnetic reversing valves (6), hydraulic pump motor (7), overflow valve (8), fuel tank (9) and oil suction filter (10), it is characterized in that, engine (1), power takeoff (2), enclosed variable pump (3) is connected successively with pioneer pump (4), the A of enclosed variable pump (3), the B hydraulic fluid port respectively with the A of closed system hydraulic motor (11), the B hydraulic fluid port connects, be connected an oil suction filter (10) between the inlet port of pioneer pump (4) and the fuel tank (9), the pressure hydraulic fluid port of pioneer pump (4) is connected with the oil-in of check valve (5), the oil-out of check valve (5) is communicated with the oil-in of overflow valve (8) and the P mouth of two four-way electromagnetic reversing valves (6) respectively, the T of two four-way electromagnetic reversing valves (6), the A hydraulic fluid port is connected with the oil return opening of overflow valve (8) and together is connected to fuel tank (9), and the B mouth of two four-way electromagnetic reversing valves (6) is connected with guide's control port of hydraulic pump motor (7).
2. the hydraulic pilot control system of a kind of oil-liquid hybrid electric concrete mixer truck according to claim 1, it is characterized in that, described enclosed variable pump (3) is the axis driving pump, adopts spline to be connected between enclosed variable pump (3) and the pioneer pump (4) and is provided with sealing mechanism.
3. the hydraulic pilot control system of a kind of oil-liquid hybrid electric concrete mixer truck according to claim 1, it is characterized in that described check valve (5), two four-way electromagnetic reversing valves (6) and overflow valve (8) are integrated into superposing type valve piece or cartridge valve piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220733956 CN203062948U (en) | 2012-12-27 | 2012-12-27 | Hydraulic pilot control system of oil-liquid hybrid power concrete mixer truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220733956 CN203062948U (en) | 2012-12-27 | 2012-12-27 | Hydraulic pilot control system of oil-liquid hybrid power concrete mixer truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203062948U true CN203062948U (en) | 2013-07-17 |
Family
ID=48761773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220733956 Expired - Fee Related CN203062948U (en) | 2012-12-27 | 2012-12-27 | Hydraulic pilot control system of oil-liquid hybrid power concrete mixer truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203062948U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105594346A (en) * | 2016-03-07 | 2016-05-25 | 农业部南京农业机械化研究所 | Driving type corrugated disc ditching device |
| CN108189241A (en) * | 2018-03-10 | 2018-06-22 | 冯秉健 | Truck mixer |
| CN108869160A (en) * | 2018-05-08 | 2018-11-23 | 陶德豪 | Digital drive system and its shift control method |
| CN113236616A (en) * | 2021-05-26 | 2021-08-10 | 广州嘉泰液压机电有限公司 | Proportional variable pump control device and control method thereof |
-
2012
- 2012-12-27 CN CN 201220733956 patent/CN203062948U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105594346A (en) * | 2016-03-07 | 2016-05-25 | 农业部南京农业机械化研究所 | Driving type corrugated disc ditching device |
| CN105594346B (en) * | 2016-03-07 | 2023-12-19 | 农业部南京农业机械化研究所 | Driving type corrugated disc ditching device |
| CN108189241A (en) * | 2018-03-10 | 2018-06-22 | 冯秉健 | Truck mixer |
| CN108869160A (en) * | 2018-05-08 | 2018-11-23 | 陶德豪 | Digital drive system and its shift control method |
| CN113236616A (en) * | 2021-05-26 | 2021-08-10 | 广州嘉泰液压机电有限公司 | Proportional variable pump control device and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201363332Y (en) | Large inertia variable frequency volume bypass throttling speed governing system | |
| CN103807223A (en) | One-hydraulic-motor double-loop control system | |
| CN103161190A (en) | Hybrid power full hydraulic loading machine hydraulic system based on pressure common rail system | |
| CN203062948U (en) | Hydraulic pilot control system of oil-liquid hybrid power concrete mixer truck | |
| CN103508321B (en) | Hydraulic control device for monorail locomotive | |
| CN205136169U (en) | Hydraulic pressure traveling system by motor speed controller | |
| CN103062140A (en) | Hydraulic device on basis of confluence control mode | |
| CN202278968U (en) | Hydraulic control system of hybrid power transmission device | |
| CN203255243U (en) | Hybrid vehicle steering control device | |
| CN102756636B (en) | Hybrid driving device for concrete mixer and concrete mixer | |
| CN201553113U (en) | Hydraulic system for crawler traction engines | |
| CN101113597B (en) | Prime move output torque equalising control device | |
| CN105015316A (en) | Hydraulic hybrid power transmission system with self-adaption switching function | |
| CN105253792A (en) | Rotation control system for crane | |
| CN205277956U (en) | Heat treating hydraulic pressure station of stove | |
| CN103832416B (en) | Hydraulic machinery rotary braking energy reuse device | |
| CN203890013U (en) | Double-pump oil supply and energy recovery type forklift hydraulic system | |
| CN206244352U (en) | A kind of shunting pressure-gradient control valve and the forklift hydraulic system with slow-speed of revolution unloading function | |
| CN206052834U (en) | Excavator rotation energy is reclaimed and utilizes system | |
| CN204692220U (en) | A kind of hydraulic system of crawler orchard operation platform | |
| CN210454946U (en) | Electric control steering system of steering axle | |
| CN104515680A (en) | Hydraulic loading closed driving axle testing device | |
| CN102434646B (en) | Dual-capacity hydraulic torque converter | |
| CN103661922A (en) | Electricity-gas hybrid power plant used for servo mechanism | |
| CN104908569B (en) | A kind of vehicle and its hybrid power system |
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: 20130717 Termination date: 20161227 |