CN208329024U - A loader pump-controlled hybrid hydraulic system - Google Patents
A loader pump-controlled hybrid hydraulic system Download PDFInfo
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- CN208329024U CN208329024U CN201820973894.6U CN201820973894U CN208329024U CN 208329024 U CN208329024 U CN 208329024U CN 201820973894 U CN201820973894 U CN 201820973894U CN 208329024 U CN208329024 U CN 208329024U
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- 239000012530 fluid Substances 0.000 claims description 24
- 239000002828 fuel tank Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 10
- 239000002131 composite material Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
本实用新型提供了一种装载机泵控混合动力液压系统。本实用新型针对执行元件为多个液压缸的工程机械，将二次调节技术中的压力耦联原理引入泵控液压系统，蓄能器可直接向外部执行元件供油，采用负载敏感技术调控蓄能器与变量泵对外输出总流量，通过调节变量泵输出流量间接控制蓄能器流量。本实用新型减少了液压变压器与复合液压元件在混合动力系统中的使用，从而降低系统成本与复杂程度。
The utility model provides a pump-controlled hybrid hydraulic system of a loader. The utility model is aimed at the construction machinery whose executive elements are multiple hydraulic cylinders. The pressure coupling principle in the secondary regulation technology is introduced into the pump-controlled hydraulic system, the accumulator can directly supply oil to the external executive elements, and the load-sensitive technology is used to regulate the storage The total flow of the accumulator and the variable pump is output externally, and the flow of the accumulator is indirectly controlled by adjusting the output flow of the variable pump. The utility model reduces the use of hydraulic transformers and composite hydraulic components in the hybrid power system, thereby reducing the cost and complexity of the system.
Description
Technical field
The utility model relates to hydraulic hybrid technology field, in particular to a kind of loading pump control hybrid-power hydraulic
System.
Background technique
Engineering machinery has the characteristics that operating condition is complicated, loads in significant periodically variable.In state of cyclic operation, due to peak value
Power only occurs in Partial Jobs section, leads to the normal underload work of engine operation, fuel economy is poor, and pollutant emission is tight
Weight.
Hydraulic hybrid technology cost, power density and in terms of it is with the obvious advantage, be suitable for big quality,
The circulation Variable power different areas of activity of high operation intensity, in engineering machinery field extensive application prospect.
The correlative study of hydraulic hybrid power system mainly uses pump control system, secondary regulation system or composite construction at present
System power stream is adjusted in three kinds of modes of system.It is the engineering machinery of multiple hydraulic cylinders, Secondary Control for executive component
Hybrid power system needs to add one or more hydraulic transformers, but liquid according to the operating pressure rank of each quantitative executive component
Pressure transformer the relevant technologies are also immature, at high cost；The used composite component manufacture difficulty of composite construction hybrid power system is big,
Structure is complicated；Pump control hybrid power is matched by adjusting pump discharge flow with loading demand flow, realizes flow control, although
Technology maturation, but it is not suitable for more actuator systems, accumulator can not directly be connect with external executive component.To sum up, for
Mostly quantitatively executing agency's hydraulic systems, existing hydraulic hybrid technology is due to higher cost, key element technology is immature, knot
The reasons such as structure complexity, it is difficult to promote and apply.
Summary of the invention
For above-mentioned defect existing in the prior art, the utility model provides a kind of loading pump control hybrid power liquid
Pressure system.This system reduces hydraulic transformer and use of the compound Hydraulic Elements in hybrid power system, to reduce and be
Cost of uniting and complexity.In conjunction with Figure of description, the technical solution of the utility model is as follows:
A kind of loading pump control hybrid-power hydraulic system, the system are moved by proportional multi-way valve 3, rotary ink tank 6, first
Arm oil cylinder 7, the second boom cylinder 8, the first hydraulic steering cylinder 9, the second hydraulic steering cylinder 10, load sensing diverter 11, accumulation of energy
Device 13, electromagnetic switch valve 15, uniform-pressure-drop valve 16, check valve 17, variable pump 19, engine 20, controller 21, fuel tank 22 and
First pressure sensor 1, second pressure sensor 12, third pressure sensor 14 and the 4th pressure sensor 18 composition；
The multi-way valve 3 respectively with 8 piping connection of rotary ink tank 6, the first boom cylinder 7 and the second boom cylinder；
The engine 20 is connect by transmission shaft with variable pump 19, and 19 oil inlet of variable pump passes through filter and oil
Case 21 connects, and 19 oil outlet of variable pump is connected with 17 oil inlet of check valve, and the oil outlet oil circuit of the check valve 17 is divided into three tunnels,
The first via is connected with proportional multi-way valve 3, and the second tunnel is connected with uniform-pressure-drop valve 16, and third road is connected with electromagnetic switch valve 15；
The oil outlet of the uniform-pressure-drop valve 16 is connected with the P of load sensing diverter 11 mouth, uniform-pressure-drop valve 16
Feedback hydraulic fluid port is connected with the LS hydraulic fluid port of load sensing diverter 11；
The hydraulic fluid port of load sensing diverter 11 is managed with the first steering cylinder 9, the second steering cylinder 10 and fuel tank 22 respectively
Road connection；
One end of the electromagnetic switch valve 15 is connected with 17 oil outlet of check valve, the other end respectively with accumulator 13 and third
Pressure sensor 14 is connected；
The first pressure sensor 1 is mounted on the LS oil port of proportional multi-way valve 3, and second pressure sensor 12 is mounted on
The LS oil port of load sensing diverter 11, the 4th pressure sensor 18 are mounted on the oil outlet of variable pump 19；
The signal acquisition terminal of the controller 21 respectively with first pressure sensor 1, second pressure sensor 12, third pressure
Force snesor 14 is connected with 18 signal of the 4th pressure sensor, and the control terminal of the controller 21 is connect with 19 signal of variable pump.
The proportional multi-way valve 3 is load responsive type proportional multi-way valve, is separately connected one three by a uniform-pressure-drop valve 2
Position four-way load-sensitive reversal valve 4 and four four-way load-sensitive reversal valves 5 composition；
3-position 4-way load-sensitive reversal valve 4 in the multi-way valve 3 controls two hydraulic fluid port of side to be had with rotary ink tank 6 respectively
Rod cavity is connected with rodless cavity, four four-way load-sensitive reversal valves 5 control a hydraulic fluid port of side respectively with the first boom cylinder 7 and
The rodless cavity of second boom cylinder 8 is connected, and four four-way load-sensitive reversal valves 5 control another hydraulic fluid port of side respectively with first
Boom cylinder 7 is connected with the rod chamber of the second boom cylinder 8, and the oil return opening of the multi-way valve 3 is connect with fuel tank 22.
The rod chamber and the second steering cylinder 10 of the L hydraulic fluid port of the load sensing diverter 11 and the first steering cylinder 9
Rodless cavity is connected, the R hydraulic fluid port of load sensing diverter 11 and the rodless cavity of the first steering cylinder 9 and having for the second steering cylinder 10
Rod cavity is connected, and the T mouth of load sensing diverter 11 connects fuel tank 22.
Compared with prior art, the utility model has the beneficial effects that:
Loading pump control hybrid-power hydraulic system described in the utility model is directed to and mostly uses this kind of quantitative execution of hydraulic cylinder
The engineering machinery of element, accumulator is directly accessed in hydraulic system, and combines load-sensitive technology, is turned to using load sensing
Device and uniform-pressure-drop valve or proportional multi-way valve, system output flow are not influenced by energy storage pressure, are avoided hydraulic transformer, are answered
The use for closing the complex components such as element, reduces system cost and complexity, it is only necessary to by being reequiped to existing loading machine,
Engine fuel economy just can be improved, reduce exhaust emissions.
Detailed description of the invention
Fig. 1 is the structure composition schematic diagram described in the utility model for loading pump control hybrid-power hydraulic system；
Fig. 2 is loading pump control hybrid-power hydraulic system torque described in the utility model and flow coupled relation block diagram.
In figure:
1- first pressure sensor；2- uniform-pressure-drop valve；3- proportional multi-way valve；
4- 3-position 4-way load-sensitive reversal valve；Tetra- four-way load-sensitive reversal valves of 5-；6- rotary ink tank；
The first boom cylinder of 7-；The second boom cylinder of 8-；The first hydraulic steering cylinder of 9-；
The second hydraulic steering cylinder of 10-；11- load sensing diverter；12- second pressure sensor；
13- accumulator；14- third pressure sensor；15- electromagnetic switch valve；
16- uniform-pressure-drop valve；17- check valve；The 4th pressure sensor of 18-；
19- variable pump；20- engine；21- controller；
22- fuel tank.
Specific embodiment
For the technical solution of the utility model and its brought beneficial effect is further described, in conjunction with Figure of description,
Specific embodiment of the present utility model is as follows:
As shown in Figure 1, the utility model discloses a kind of loading pump control hybrid-power hydraulic system, the system by than
Example multi-way valve 3, rotary ink tank 6, the first boom cylinder 7, the second boom cylinder 8, the first hydraulic steering cylinder 9, the second steering hydraulic
Cylinder 10, load sensing diverter 11, accumulator 13, electromagnetic switch valve 15, uniform-pressure-drop valve 16, check valve 17, variable pump 19, hair
Motivation 20, controller 21, fuel tank 22 and first pressure sensor 1, second pressure sensor 12,14 and of third pressure sensor
4th pressure sensor 18 composition.
The proportional multi-way valve 3 is load responsive type proportional multi-way valve, is separately connected one three by a uniform-pressure-drop valve 2
Position four-way load-sensitive reversal valve 4 and four four-way load-sensitive reversal valves 5 composition.
3-position 4-way load-sensitive reversal valve 4 in the multi-way valve 3 controls two hydraulic fluid port of side to be had with rotary ink tank 6 respectively
Rod cavity is connected with rodless cavity, four four-way load-sensitive reversal valves 5 control a hydraulic fluid port of side respectively with the first boom cylinder 7 and
The rodless cavity of second boom cylinder 8 is connected, and four four-way load-sensitive reversal valves 5 control another hydraulic fluid port of side respectively with first
Boom cylinder 7 is connected with the rod chamber of the second boom cylinder 8, and the oil return opening of the multi-way valve 3 is connect with fuel tank 22.
The engine 20 is connect by transmission shaft with variable pump 19, and 19 oil inlet of variable pump passes through filter and oil
Case 22 connects, and 19 oil outlet of variable pump is connected with 17 oil inlet of check valve, and the oil outlet oil circuit of the check valve 17 is divided into three tunnels,
The first via is connected with the uniform-pressure-drop valve 2 in proportional multi-way valve 3, and the second tunnel is connected with uniform-pressure-drop valve 16, third road and electromagnetism
Switch valve 15 is connected.
The oil outlet of the uniform-pressure-drop valve 16 is connected with the P of load sensing diverter 11 mouth, uniform-pressure-drop valve 16
Feedback hydraulic fluid port is connected with the LS hydraulic fluid port of load sensing diverter 11.The L hydraulic fluid port and the first steering oil of load sensing diverter 11
The rodless cavity of the rod chamber of cylinder 9 and the second steering cylinder 10 is connected, the R hydraulic fluid port and the first steering cylinder of load sensing diverter 11
The rod chamber of 9 rodless cavity and the second steering cylinder 10 is connected, and the T mouth of load sensing diverter 11 connects fuel tank 22.
One end of the electromagnetic switch valve 15 is connected with 17 oil outlet of check valve, the other end respectively with accumulator 13 and third
Pressure sensor 14 is connected.The first pressure sensor 1 is mounted on the LS oil port of proportional multi-way valve 3, second pressure sensing
Device 12 is mounted on the LS oil port of load sensing diverter 11, and the 4th pressure sensor 18 is mounted on the oil outlet of variable pump 19
Place.
The signal acquisition terminal of the controller 21 respectively with first pressure sensor 1, second pressure sensor 12, third pressure
Force snesor 14 is connected with 18 signal of the 4th pressure sensor, and the control terminal of the controller 21 is connect with 19 signal of variable pump,
The controller 21 receives the pressure signal that each pressure sensor detects, and then controls the discharge capacity of variable pump 19.
Based on the composition and connection relationship of above-mentioned loading pump control hybrid-power hydraulic system, the utility model is additionally provided
A kind of control method loading pump control hybrid-power hydraulic system, the control method are persistently controlled using divided working status optimum pressure
System is divided into high pressure operating condition and low pressure operating condition and divided the work according to hydraulic system load characteristic by method processed, the control method
Condition determines accumulator optimum pressure state, is control target with accumulator optimum pressure, using engine high-efficiency area as constraint item
Part reduces system throttles loss, improves engine fuel efficiency, and ensure that the energy balance of hybrid power system.
As shown in Fig. 2, in loading pump control hybrid-power hydraulic system described in the utility model, by gear with start
Machine is connected with fluid torque-converter, forms torque coupling, at steady state, system components torque relationship are as follows:
Te=Th+Tp
In above-mentioned formula, TeFor motor torque, ThFor variable pump running torque, TpFor face of fluid torque converter torque；
In addition, in Fig. 2, QpumpFor variable pump discharge, QaccFor accumulator flow, QallFor steering system and working hydraulic pressure system
System aggregate demand flow.
The utility model is the engineering machinery of multiple hydraulic cylinders for executive component, by the pressure coupling in Secondary Regulation Technology
Join principle and introduce pump control hydraulic system, accumulator 13 can direct out portion's executive component fuel feeding, using load-sensitive technical regulation
Accumulator 13 and variable pump 19 externally export total flow, pump 19 output flows by regulated variable and indirectly control the stream of accumulator 13
Amount.
Claims (3)
1. a kind of loading pump control hybrid-power hydraulic system, it is characterised in that:
The system is by proportional multi-way valve (3), rotary ink tank (6), the first boom cylinder (7), the second boom cylinder (8), first
Hydraulic steering cylinder (9), the second hydraulic steering cylinder (10), load sensing diverter (11), accumulator (13), electromagnetic switch valve
(15), uniform-pressure-drop valve (16), check valve (17), variable pump (19), engine (20), controller (21), fuel tank (22) and
First pressure sensor (1), second pressure sensor (12), third pressure sensor (14) and the 4th pressure sensor (18) group
At；
The multi-way valve (3) respectively with rotary ink tank (6), the first boom cylinder (7) and the second boom cylinder (8) piping connection；
The engine (20) connect by transmission shaft with variable pump (19), variable pump (19) oil inlet pass through filter and
Fuel tank (22) connection, variable pump (19) oil outlet are connected with check valve (17) oil inlet, the oil outlet oil of the check valve (17)
Road is divided into three tunnels, and the first via is connected with proportional multi-way valve (3), and the second tunnel is connected with uniform-pressure-drop valve (16), third road and electromagnetism
Switch valve (15) is connected；
The oil outlet of the uniform-pressure-drop valve (16) is connected with the P mouth of load sensing diverter (11), uniform-pressure-drop valve (16)
Feedback hydraulic fluid port be connected with the LS hydraulic fluid port of load sensing diverter (11)；
The hydraulic fluid port of load sensing diverter (11) respectively with the first steering cylinder (9), the second steering cylinder (10) and fuel tank
(22) piping connection；
One end of the electromagnetic switch valve (15) is connected with check valve (17) oil outlet, the other end respectively with accumulator (13) and
Three pressure sensors (14) are connected；
The first pressure sensor (1) is mounted on the LS oil port of proportional multi-way valve (3), second pressure sensor (12) installation
In the LS oil port of load sensing diverter (11), the 4th pressure sensor (18) is mounted on the oil outlet of variable pump (19)；
The signal acquisition terminal of the controller (21) respectively with first pressure sensor (1), second pressure sensor (12), third
Pressure sensor (14) is connected with the 4th pressure sensor (18) signal, the control terminal of the controller (21) and variable pump (19)
Signal connection.
2. a kind of loading pump control hybrid-power hydraulic system as described in claim 1, it is characterised in that:
The proportional multi-way valve (3) is load responsive type proportional multi-way valve, is separately connected one three by a uniform-pressure-drop valve (2)
Position four-way load-sensitive reversal valve (4) and four four-way load-sensitive reversal valves (5) composition；
In the multi-way valve (3) 3-position 4-way load-sensitive reversal valve (4) control two hydraulic fluid port of side respectively with rotary ink tank (6)
Rod chamber is connected with rodless cavity, and a hydraulic fluid port of four four-way load-sensitive reversal valve (5) control sides is oily with the first swing arm respectively
Cylinder (7) is connected with the rodless cavity of the second boom cylinder (8), another oil of four four-way load-sensitive reversal valve (5) control sides
Mouthful be connected respectively with the rod chamber of the first boom cylinder (7) and the second boom cylinder (8), the oil return opening of the multi-way valve (3) and
Fuel tank (22) connection.
3. a kind of loading pump control hybrid-power hydraulic system as described in claim 1, it is characterised in that:
The nothing of the L hydraulic fluid port of load sensing diverter (11) and the rod chamber of the first steering cylinder (9) and the second steering cylinder (10)
Rod cavity is connected, the R hydraulic fluid port of load sensing diverter (11) and the rodless cavity of the first steering cylinder (9) and the second steering cylinder (10)
Rod chamber be connected, T mouth of load sensing diverter (11) connection fuel tank (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820973894.6U CN208329024U (en) | 2018-06-22 | 2018-06-22 | A loader pump-controlled hybrid hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820973894.6U CN208329024U (en) | 2018-06-22 | 2018-06-22 | A loader pump-controlled hybrid hydraulic system |
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| Publication Number | Publication Date |
|---|---|
| CN208329024U true CN208329024U (en) | 2019-01-04 |
Family
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|---|---|---|---|
| CN201820973894.6U Expired - Fee Related CN208329024U (en) | 2018-06-22 | 2018-06-22 | A loader pump-controlled hybrid hydraulic system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678045A (en) * | 2018-06-22 | 2018-10-19 | 吉林大学 | A loader pump-controlled hybrid hydraulic system and its control method |
| CN109654072A (en) * | 2019-01-21 | 2019-04-19 | 湖北新楚风汽车股份有限公司 | The electronic kitchen waste cart hydraulic control system of energy-saving pure |
| CN111332120A (en) * | 2020-03-12 | 2020-06-26 | 山推工程机械股份有限公司 | Hydraulic drive traveling system and loader |
| RU2729656C1 (en) * | 2019-05-31 | 2020-08-11 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Псковский государственный университет" | Rock mining machine |
-
2018
- 2018-06-22 CN CN201820973894.6U patent/CN208329024U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678045A (en) * | 2018-06-22 | 2018-10-19 | 吉林大学 | A loader pump-controlled hybrid hydraulic system and its control method |
| CN108678045B (en) * | 2018-06-22 | 2023-08-22 | 吉林大学 | A loader pump-controlled hybrid hydraulic system and its control method |
| CN109654072A (en) * | 2019-01-21 | 2019-04-19 | 湖北新楚风汽车股份有限公司 | The electronic kitchen waste cart hydraulic control system of energy-saving pure |
| RU2729656C1 (en) * | 2019-05-31 | 2020-08-11 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Псковский государственный университет" | Rock mining machine |
| CN111332120A (en) * | 2020-03-12 | 2020-06-26 | 山推工程机械股份有限公司 | Hydraulic drive traveling system and loader |
| CN111332120B (en) * | 2020-03-12 | 2022-02-18 | 山推工程机械股份有限公司 | Hydraulic drive traveling system and loader |
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