CN108086396A - A kind of continuous hydraulic loading machine closed circuit hydraulic system - Google Patents
A kind of continuous hydraulic loading machine closed circuit hydraulic system Download PDFInfo
- Publication number
- CN108086396A CN108086396A CN201611030746.2A CN201611030746A CN108086396A CN 108086396 A CN108086396 A CN 108086396A CN 201611030746 A CN201611030746 A CN 201611030746A CN 108086396 A CN108086396 A CN 108086396A
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- hydraulic
- pump
- cylinder
- circuit
- oil
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2289—Closed circuit
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
A kind of continuous hydraulic loading machine closed circuit hydraulic system, mainly by motor, pump group, lift slot oil cylinder, bidirectional hydraulic lock, collection residual oil cylinder, transport motor, left and right running motor, three, jointly one hydraulic control valve group of control, foot-operated pilot valve, Manual operation type pilot valve, bucket arm cylinder, bucket cylinder, angling cylinder, boom cylinder, 5-linked hydraulic control valve group, air-cooled motor, air-cooled radiator, magnetic return filter, overflow valve, liquid level liquid thermometer, filter, self-priming air filter etc. form；The hydraulic system is made of left and right major loop, cooling circuit, pilot circuit and feed circuit；Design of Hydraulic System after most of hydraulic oil flows through radiator, filter, can all flow directly into the inlet port of main pump, increase pumping oil port back pressure, reduce hydraulic shock and reduce system bulk into closed loop system；Using alternating power control method, pump output flow and pressure is made to adapt to the variation of load automatically, reduces power loss, reduces energy consumption.
Description
Technical field
The present invention relates to loading machine technical field more particularly to a kind of continuous hydraulic loading machine closed circuit hydraulic pressure systems
System.
Background technology
At present, the method that continuous hydraulic loading machine is controlled using open circuit and total power.Open circuit
System, fluid directly flow back to fuel tank, and the back pressure at hydraulic pump inlet port is small, and hydraulic shock is big, and system stability is poor, while required
Fuel tank is bulky, and complete machine structure is not compact.The method of total power control, when loading machine works, the tune of two pump swash plate pivot angles
Save it is always consistent, i.e., two pump flows it is equal always;And in real work, it may be necessary to which a pump is in high pressure, small stream
Amount, another pump is in low pressure, big flow state.Pump in high pressure, flow are more than flow needed for system, a part of fluid
It to flow away from overflow valve, make system heat generation, cause power loss；And the pump in low pressure, flow are not achieved again needed for system
Flow makes operating mechanism that maximum operating speed be not achieved, and reduces work efficiency.For this purpose, herein by continuous hydraulic loading machine liquid
Pressure system is designed to closed loop system, reduces system bulk；Using alternating power
Control method makes pump output flow and pressure adapt to the variation of load automatically, reduces power loss, reduce energy consumption.
Chinese invention patent（201410248218.9 applying date of application number 2014.06.05）Disclose a kind of loading machine
Hydraulic system, include Variable plunger pump, the outlet of Variable plunger pump is through reversing valve assembly and steering hydraulic system part
The P mouths of distributing valve are connected to behind hydraulic oil interflow, distributing valve is three six logical two way reversing valves, is overflow including two way reversing valves, master
Valve and secondary repairing overflow valve and hydraulic control one-way valve are flowed, when middle position, P mouthfuls directly by middle position through T mouthfuls of oil return boxes, distributing valve
Rotating bucket join A1 mouthful and B1 mouthful A11 mouths for being connected to rotating bucket cylinder and B11 mouthfuls, the A2 mouths and the B2 mouthfuls of A22 for being connected to swing arm cylinder that swing arm joins
Mouthful and B22 mouthfuls.
Chinese utility model patent（201520415630.5 applying date of application number 2015.06.16）Disclose a kind of dress
Carrier aircraft hydraulic system belongs to engineering machinery hydraulic control field, for loading machine, including hydraulic oil container, the hydraulic oil container
It is connected with working barrel, steering pump, the working barrel is connected by fluid pressure line with multi-way valve, shuttle valve, switch valve respectively, described more
Road valve is connected respectively with pilot valve, pressure selection valve, boom cylinder and rotary ink tank, and wherein pressure selection valve passes through shuttle valve and stream
Measure valve connection；The steering pump is connected respectively with flow valve, switch valve, and flow valve and switch valve are by fluid pressure line and preferentially
Valve connects, and pressure-gradient control valve is connected with steering gear, and steering gear is connected with steering cylinder, wherein also connecting between the flow valve and switch valve
It is connected to sequence valve.
The content of the invention
For existing equipment and the deficiency of technology, the invention reside in provide a kind of continuous hydraulic loading machine closed circuit liquid
Pressure system, it is simple and compact for structure, easy to operate, operate steadily, is of low cost, strong applicability.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of continuous hydraulic loading machine closed circuit hydraulic system, mainly by motor, pump group, lift slot oil cylinder, bidirectional hydraulic lock,
Collect residual oil cylinder, transport motor, left and right running motor, three jointly one hydraulic control valve group of control, foot-operated pilot valve, hand guide
Valve, bucket arm cylinder, bucket cylinder, angling cylinder, boom cylinder, 5-linked hydraulic control valve group, air-cooled motor, air-cooled radiator, magnetism
The compositions such as return filter, overflow valve, liquid level liquid thermometer, filter, self-priming air filter；The hydraulic system is by a left side
Right major loop, cooling circuit, pilot circuit and feed circuit composition；The hydraulic oil that hydraulic pump S1 is exported in the left major loop
Into hydraulic valve bank, driving lift slot oil cylinder, collection residual oil cylinder, transport motor, left running motor；Hydraulic pump in the right major loop
The hydraulic oil of S2 outputs enters hydraulic valve bank, drives right running motor, bucket arm cylinder, bucket cylinder, angling cylinder, swing arm oil
Cylinder；The hydraulic oil that hydraulic pump S3 is exported in the cooling circuit directly drives air-cooled motor, is driven by air-cooled motor air-cooled
Radiator radiates to all hydraulic oil flowed through；The liquid that hydraulic pump S4 is exported in the pilot circuit and feed circuit
Pressure oil, a part flow to pilot valve, and completion is pilot operated, and another part flows to the inlet port of main pump, and repairing is carried out to main pump；Institute
The overflow valve stated makes all extra hydraulic oil of entire hydraulic system flow back to fuel tank, ensures system safety and stability.
As a preferred embodiment of the present invention, the hydraulic system uses closed loop system, most of hydraulic oil
After flowing through radiator, filter, the inlet port of main pump can be all flowed directly into, compared with original open circuit, increases pump
Back pressure at inlet port, reduces hydraulic shock, improves transmission stability, reduces fuel tank volume, improves complete machine structure.
As a preferred embodiment of the present invention, the hydraulic system use alternating power control method, main pump S1 and
S2 output flows and pressure can be applicable in the variation of load automatically, disclosure satisfy that a pump in high pressure, small flow, another pump
Needs in low pressure, big flow compared with original total power control method, reduce system overflow fever, reduce power
Loss, ensure that executive component operating rate is normal, improves work efficiency.
As a preferred embodiment of the present invention, using treble pump in the design of hydraulic pump, wherein two use change
Amount pump S1 and S2, it is another using coaxial pump S3 and S4 for controlling each executive component, for cooling circuit, repairing is controlled to return
Road, pilot circuit.
The beneficial effects of the invention are as follows：Simple in structure, connection and reasonable arrangement is easily installed, and work efficiency is higher, production cost compared with
It is low, it operates steadily, it is easy to operate, there is significant technology economy advantage, design of Hydraulic System is reduced into closed loop system
System bulk；Using alternating power control method, pump output flow and pressure is made to adapt to the variation of load automatically, reduces power
Loss, reduces energy consumption, can preferably meet the requirement of loading machine, and for improving, China's loading machine is energy saving, high-performance
Level is of great significance.
Description of the drawings
In order to which technical problem solved by the invention, technical solution and advantageous effect is more clearly understood, below in conjunction with
The drawings and the specific embodiments, the present invention will be described in further detail.
Fig. 1 is structure diagram of the present invention.
1- motors in figure, 2- pump groups, 3- lift slot oil cylinders, 4- bidirectional hydraulic locks, 5- collection residual oil cylinders, 6- transport motors, 7- are left
Running motor, 8- tri-, which is united, controls a hydraulic control valve group, the foot-operated pilot valves of 9-, 10- Manual operation type pilot valves, the right running motors of 11-,
12- bucket arm cylinders, 13- bucket cylinders, 14- angling cylinders, 15- boom cylinders, 16- 5-linked hydraulic control valve groups, the air-cooled motors of 17-,
18- air-cooled radiators, 19- magnetism return filters, 20- overflow valves, 21- overflow valves, 22- overflow valves, 23- liquid level liquid thermometers,
24- filters, the self-priming air filters of 25-.
Specific embodiment
Continuous hydraulic loading machine closed circuit hydraulic system is mainly by motor, pump group, lift slot oil cylinder, two-way liquid in Fig. 1
Pressure lock, collection residual oil cylinder, transport motor, left and right running motor, three unite one hydraulic control valve group of control, foot-operated pilot valve, hand
Pilot valve, bucket arm cylinder, bucket cylinder, angling cylinder, boom cylinder, 5-linked hydraulic control valve group, air-cooled motor, air-cooled radiator,
The compositions such as magnetic return filter, overflow valve, liquid level liquid thermometer, filter, self-priming air filter；The hydraulic system
It is made of left and right major loop, cooling circuit, pilot circuit and feed circuit；The liquid that hydraulic pump S1 is exported in the left major loop
Pressure oil enters hydraulic valve bank, driving lift slot oil cylinder, collection residual oil cylinder, transport motor, left running motor；Liquid in the right major loop
The hydraulic oil of press pump S2 outputs enters hydraulic valve bank, drives right running motor, bucket arm cylinder, bucket cylinder, angling cylinder, swing arm
Oil cylinder；The hydraulic oil that hydraulic pump S3 is exported in the cooling circuit directly drives air-cooled motor, and wind is driven by air-cooled motor
Cold heat sink radiates to all hydraulic oil flowed through；Hydraulic pump S4 is exported in the pilot circuit and feed circuit
Hydraulic oil, a part flow to pilot valve, and completion is pilot operated, and another part flows to the inlet port of main pump, and repairing is carried out to main pump；
The overflow valve makes all extra hydraulic oil of entire hydraulic system flow back to fuel tank, ensures system safety and stability.
The working method of the continuous hydraulic loading machine closed circuit hydraulic system is：Hydraulic pump S1 is exported in left major loop
Hydraulic oil enter hydraulic valve bank, driving lift slot oil cylinder, collection residual oil cylinder, transport motor, left running motor are flowed from hydraulic valve bank
The hydraulic oil gone out flows to the inlet port of main pump, forms closed circuit by radiator, filter, hydraulic control one-way valve；The right side
In major loop hydraulic pump S2 export hydraulic oil enter hydraulic valve bank, drive right running motor, bucket arm cylinder, bucket cylinder, return
Turn oil cylinder, boom cylinder, the hydraulic oil flowed out from hydraulic valve bank flows to main pump by radiator, filter, hydraulic control one-way valve
Inlet port, formed closed circuit；The hydraulic oil that hydraulic pump S3 is exported in the cooling circuit directly drives air-cooled motor, leads to
Air-cooled motor driving air-cooled radiator is crossed, is radiated to all hydraulic oil flowed through, the hydraulic oil flowed out from air-cooled motor
By radiator, filter, hydraulic control one-way valve, the inlet port of main pump is flowed to, forms closed circuit；The pilot circuit and benefit
The hydraulic oil that hydraulic pump S4 is exported in oil return line, a part flow to pilot valve, and completion is pilot operated, and another part flows to main pump
Inlet port carries out repairing to main pump；All extra hydraulic oil of entire hydraulic system, all can flow back to fuel tank by overflow valve, ensure
System safety and stability.
It is understood that above with respect to the specific descriptions of the present invention, it is merely to illustrate the present invention and is not limited to this
The described technical solution of inventive embodiments, it will be understood by those of ordinary skill in the art that, still the present invention can be carried out
Modification or equivalent substitution, to reach identical technique effect；As long as meeting using needs, all protection scope of the present invention it
It is interior.
Claims (4)
1. a kind of continuous hydraulic loading machine closed circuit hydraulic system, mainly by motor, pump group, lift slot oil cylinder, bidirectional hydraulic
Jointly one hydraulic control valve group of control, foot-operated pilot valve, hand are first by lock, collection residual oil cylinder, transport motor, left and right running motor, three
Pilot valve, bucket arm cylinder, bucket cylinder, angling cylinder, boom cylinder, 5-linked hydraulic control valve group, air-cooled motor, air-cooled radiator, magnetic
The compositions such as property return filter, overflow valve, liquid level liquid thermometer, filter, self-priming air filter；The hydraulic system by
Left and right major loop, cooling circuit, pilot circuit and feed circuit composition；The hydraulic pressure that hydraulic pump S1 is exported in the left major loop
Oil collects residual oil cylinder, transport motor, left running motor into hydraulic valve bank, driving lift slot oil cylinder；Hydraulic pressure in the right major loop
The hydraulic oil of pump S2 outputs enters hydraulic valve bank, drives right running motor, bucket arm cylinder, bucket cylinder, angling cylinder, swing arm oil
Cylinder；The hydraulic oil that hydraulic pump S3 is exported in the cooling circuit directly drives air-cooled motor, is driven by air-cooled motor air-cooled
Radiator radiates to all hydraulic oil flowed through；The liquid that hydraulic pump S4 is exported in the pilot circuit and feed circuit
Pressure oil, a part flow to pilot valve, and completion is pilot operated, and another part flows to the inlet port of main pump, and repairing is carried out to main pump；Institute
The overflow valve stated makes all extra hydraulic oil of entire hydraulic system flow back to fuel tank, ensures system safety and stability.
2. a kind of continuous hydraulic loading machine closed circuit hydraulic system according to claim 1, it is characterized in that：Described
Hydraulic system uses closed loop system, after most of hydraulic oil flows through radiator, filter, can all flow directly into the suction of main pump
Hydraulic fluid port compared with original open circuit, increases pumping oil port back pressure, reduces hydraulic shock, and it is flat to improve transmission
Stability reduces fuel tank volume, improves complete machine structure.
3. a kind of continuous hydraulic loading machine closed circuit hydraulic system according to claim 1, it is characterized in that：Described
Hydraulic system uses alternating power control method, and main pump S1 and S2 output flow and pressure can be applicable in the variation of load automatically,
A pump be disclosure satisfy that in high pressure, small flow, another pump is controlled in low pressure, the needs of big flow with original total power
Method is compared, and is reduced system overflow fever, is reduced power loss, ensure that executive component operating rate is normal, improve
Work efficiency.
4. a kind of continuous hydraulic loading machine closed circuit hydraulic system according to claim 1, it is characterized in that：Described
Using treble pump in design of hydraulic pump, wherein two use variable pump S1 and S2, it is another to use for controlling each executive component
Coaxial pump S3 and S4, for controlling cooling circuit, feed circuit, pilot circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611030746.2A CN108086396A (en) | 2016-11-22 | 2016-11-22 | A kind of continuous hydraulic loading machine closed circuit hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611030746.2A CN108086396A (en) | 2016-11-22 | 2016-11-22 | A kind of continuous hydraulic loading machine closed circuit hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108086396A true CN108086396A (en) | 2018-05-29 |
Family
ID=62169741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611030746.2A Pending CN108086396A (en) | 2016-11-22 | 2016-11-22 | A kind of continuous hydraulic loading machine closed circuit hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108086396A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595207A (en) * | 2019-01-21 | 2019-04-09 | 何旺成 | Digital control water hydraulic canonical system circuit |
| CN111734696A (en) * | 2020-07-02 | 2020-10-02 | 浙江中液机械设备有限公司 | Closed hydraulic system based on closed-loop control and control method |
-
2016
- 2016-11-22 CN CN201611030746.2A patent/CN108086396A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595207A (en) * | 2019-01-21 | 2019-04-09 | 何旺成 | Digital control water hydraulic canonical system circuit |
| CN111734696A (en) * | 2020-07-02 | 2020-10-02 | 浙江中液机械设备有限公司 | Closed hydraulic system based on closed-loop control and control method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180529 |