CN206409447U - Engineering machinery auxiliary equipment turns round hydraulic control system - Google Patents
Engineering machinery auxiliary equipment turns round hydraulic control system Download PDFInfo
- Publication number
- CN206409447U CN206409447U CN201621393762.3U CN201621393762U CN206409447U CN 206409447 U CN206409447 U CN 206409447U CN 201621393762 U CN201621393762 U CN 201621393762U CN 206409447 U CN206409447 U CN 206409447U
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- Prior art keywords
- oil
- engineering machinery
- control system
- auxiliary equipment
- hydraulic control
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 230000006837 decompression Effects 0.000 claims 1
- 239000000446 fuel Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 description 25
- 239000010720 hydraulic oil Substances 0.000 description 12
- 238000010276 construction Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
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- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The utility model is related to hydraulic control system, and to solve the shortcoming that existing revolution hydraulic control system energy loss is big, the utility model constructs a kind of engineering machinery auxiliary equipment revolution hydraulic control system, includes power drive unit, the rotary motor of engineering machinery；Characterized by further comprising two-way variable displacement pump, two hydraulic fluid ports of the two-way variable displacement pump are connected through left pipeline and right pipeline correspondence with two hydraulic fluid ports of the rotary motor respectively, output shaft connection of the power input shaft through clutch and power drive unit of two-way variable displacement pump.In the utility model, loop is formed between variable pump and rotary motor, auxiliary equipment hydraulic system is changed to closed system by open system, system is simpler, it is easily installed, the clutch of electromagnetic clutch control power source and hydraulic pump, when accessory does not work, energy loss is reduced, energy utilization rate is improved.
Description
Technical field
The utility model is related to a kind of revolution hydraulic control system, more specifically to a kind of attached dress of engineering machinery
Put back into and turn hydraulic control system.
Background technology
Hydraulic crawler excavator is a main machine in engineering machinery as a kind of fast and efficiently Construction Operating Machinery,
It is one of main mechanical in restoration in earth-rock construction engineering, " king of engineering machinery " is referred to as in the industry, it is widely used in work
The industry such as industry and civil buildings, communications and transportation, hydraulic and electric engineering engineering, farmland improvement, mine excavation and modernization military engineering
Mechanized construction in.
The auxiliary equipment revolution hydraulic control system of current engineering machinery such as excavator is open type hydraulic system, in open type liquid
In pressure system, revolution hydraulic control system obtains the hydraulic oil of high pressure at hydraulic oil source, and revolution hydraulic control system is by changing
To valve control hydraulic oil flow direction, when auxiliary equipment does not work, reversal valve be in middle position, but now hydraulic oil source due to hydraulic pressure
The linear loss of pipeline still has certain pressure, and this can cause substantial amounts of energy loss.
Utility model content
The technical problems to be solved in the utility model is engineering machinery auxiliary equipment revolution hydraulic control system energy loss
Big shortcoming, and a kind of engineering machinery auxiliary equipment revolution hydraulic control system of energy-conservation simple in construction is provided.
The utility model is to realize that the technical scheme of its purpose is such：Construct a kind of engineering machinery auxiliary equipment revolution
Hydraulic control system, includes power drive unit, the rotary motor of engineering machinery；Characterized by further comprising two-way variable displacement pump,
Two hydraulic fluid ports of the two-way variable displacement pump are connected through left pipeline and right pipeline correspondence with two hydraulic fluid ports of the rotary motor respectively,
Output shaft connection of the power input shaft of two-way variable displacement pump through clutch and power drive unit.In the utility model, variable
Loop is formed between pump and rotary motor, auxiliary equipment hydraulic system is changed to closed system by open system, and system is more
Simply, it is easily installed, the clutch of electromagnetic clutch control power source and hydraulic pump, when accessory does not work, reduces energy damage
Lose, improve energy utilization rate.
Further, in addition to repairing valve group and pressure-reducing valve, the repairing valve group includes two repairing check valves, two institutes
The oil-out for stating repairing check valve is connected with left pipeline and oil pipe line respectively, and the oil inlet of two repairing check valves is through described
Pressure-reducing valve is connected with pressure oil-source, and pressure oil-source carries out repairing by pressure-reducing valve and repairing check valve, makes up caused by leakage
Liquid oil loss on closed circuit oil circuit.
Further, accumulator, accumulator stable hydraulic are connected with the oil circuit between the pressure-reducing valve and pressure oil-source
The pressure of system.
Further, in addition to check valve, on the oil circuit being arranged between pressure-reducing valve and pressure oil-source of the check valve,
The oil-out of the check valve is connected with the oil inlet and accumulator of the pressure-reducing valve simultaneously.The pressure oil-source is pioneer pump.
Check valve prevents hydraulic oil from flowing backwards damage pioneer pump.
Further, in addition to oil filter, the oil filter be connected to the check valve oil inlet end and pressure oil-source it
Between oil circuit on.
Further, in addition to two safety valves, safety valve described in two is connected between left pipeline and oil pipe line,
Safety valve avoids the overload for occurring damage system on closed circuit loop.
Further, the control port of the two-way variable displacement pump is connected with pressure oil-source.
Further, the two-way variable displacement pump is the variable pump for carrying proportional servo valve.
The utility model disconnects power drive by clutch compared with prior art, when not worked with auxiliary equipment and filled
Put, reduce energy loss, rotary motor is directly controlled to rotate by pump.This hydraulic system is closed type hydraulic system, two-way variable displacement pump
Variable by solenoid-operated proportional servo valve control, the size of the size decision variable pumpage of solenoid-operated proportional servo threshold voltage, enclosed
The control of hydraulic system is oily and is provided due to revealing the hydraulic oil required supplementation with by pioneer pump by hydraulic control valve group.
Brief description of the drawings
Fig. 1 is hydraulic schematic diagram of the present utility model.
Parts title and sequence number in figure：
Clutch 1, two-way variable displacement pump 2, repairing check valve 3, rotary motor 4, pressure-reducing valve 5, pioneer pump 6, hydraulic oil container 7,
Accumulator 8, safety valve 9, check valve 10, oil filter 11, power drive unit 12.
Embodiment
Illustrate specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, engineering machinery auxiliary equipment turns round hydraulic control system, engineering machinery can be excavator, loading
Machine etc., the system includes power drive unit 12, rotary motor 4, the two-way variable displacement pump 2 of engineering machinery；Power drive unit 12
Can be power taking system or motor on the engine or gearbox of engineering machinery etc., the power of two-way variable displacement pump 2 is defeated
Enter axle to be connected with the output shaft of power drive unit 12 through clutch 1.Two hydraulic fluid ports of two-way variable displacement pump 2 respectively through left pipeline and
Right pipeline correspondence is connected with two hydraulic fluid ports of rotary motor 4 and forms closed system.Clutch 1 can be electromagnetic clutch or its
The controllable clutch of his form.
The repairing valve group being made up of two repairing check valves 3, one of repairing are connected with left pipeline and right pipeline
The oil-out of check valve is connected with left pipeline, and the oil-out of another repairing check valve is connected with right pipeline.
The repairing of closed system is provided by the pioneer pump 6 of engineering machinery, and the oil-out of pioneer pump 6 sequentially passes through oil filter
11st, check valve 10, pressure-reducing valve 5 are connected with the oil inlet of two repairing check valves 3, in pressure-reducing valve 5 and the oil-out of check valve 10
Between connect accumulator 8, the pressure of the stable hydraulic system of accumulator 8.Check valve 10 prevents hydraulic oil from flowing backwards damage pioneer pump 6.
The draw oil from hydraulic oil container 7 of pioneer pump 6 is supplied to closed system.
Two safety valves 9, the oil inlet of one of safety valve and left pipeline are connected between left pipeline and oil pipe line
Connection, oil-out is connected with right pipeline, and the oil inlet of another safety valve is connected with right pipeline, and oil-out connects with left pipeline
Connect.Safety valve avoids the overload for occurring damage system on closed circuit loop.
Two-way variable displacement pump 2 is the variable pump by carrying proportional servo valve, and its control port and the oil inlet of pressure-reducing valve 5 connect
Connect.
In the present embodiment, the combination and disconnection of electromagnetic clutch control two-way variable displacement pump and power drive unit, electromagnetism
Power drive unit driving bidirectional variable pump work when clutch is powered, two-way variable displacement pump drives with power when electromagnetic clutch is powered off
Dynamic device disconnects, and two-way variable displacement pump is stopped.The discharge capacity of two-way variable displacement pump is by carrying proportional servo valve control, proportional servo valve
Controlled by long-range potentiometer, the hydraulic oil driving auxiliary equipment rotary motor of two-way variable displacement pump output controls two-way quantitative motor
Rotating, oil compensating safety valve group acts to protect closed type hydraulic system, two repairing check valves, the repairing of closed system by
Pioneer pump is supplied by oil filter, check valve, pressure-reducing valve, and the hydraulic oil of oil filter filtering supply hydraulic system, accumulator is stable
The pressure of hydraulic system, check valve prevents hydraulic oil from flowing backwards damage pioneer pump, the low pressure oil of pressure-reducing valve control and recharge closed system
Pressure, while pioneer pump also provides control pressure oil to two-way variable displacement pump.
Claims (9)
1. a kind of engineering machinery auxiliary equipment turns round hydraulic control system, include power drive unit, the revolution horse of engineering machinery
Reach；Characterized by further comprising two-way variable displacement pump, two hydraulic fluid ports of the two-way variable displacement pump are respectively through left pipeline and right pipeline pair
It should be connected with two hydraulic fluid ports of the rotary motor, the power input shaft of two-way variable displacement pump is through clutch and power drive unit
Output shaft is connected.
2. engineering machinery auxiliary equipment according to claim 1 turns round hydraulic control system, it is characterised in that also including mending
Fuel tap group and pressure-reducing valve, the repairing valve group include two repairing check valves, the oil-out difference of two repairing check valves
It is connected with left pipeline and oil pipe line, the oil inlet of two repairing check valves is connected through the pressure-reducing valve with pressure oil-source.
3. engineering machinery auxiliary equipment according to claim 2 turns round hydraulic control system, it is characterised in that the decompression
Accumulator is connected with oil circuit between valve and pressure oil-source.
4. engineering machinery auxiliary equipment according to claim 3 turns round hydraulic control system, it is characterised in that also including list
To valve, on the oil circuit being arranged between pressure-reducing valve and pressure oil-source of the check valve, the oil-out of the check valve simultaneously with
Oil inlet and the accumulator connection of the pressure-reducing valve.
5. engineering machinery auxiliary equipment according to claim 4 turns round hydraulic control system, it is characterised in that also including filter
Oily device, the oil filter is connected on the oil circuit between the oil inlet end of the check valve and pressure oil-source.
6. the engineering machinery auxiliary equipment revolution hydraulic control system according to any one of claim 2 to 5, its feature exists
In the pressure oil-source be pioneer pump.
7. engineering machinery auxiliary equipment according to any one of claim 1 to 5 turns round hydraulic control system, its feature exists
In also including two safety valves, the safety valve described in two is connected between left pipeline and oil pipe line.
8. engineering machinery auxiliary equipment according to claim 2 turns round hydraulic control system, it is characterised in that described two-way
The control port of variable pump is connected with pressure oil-source.
9. engineering machinery auxiliary equipment according to claim 8 turns round hydraulic control system, it is characterised in that described two-way
Variable pump is the variable pump for carrying proportional servo valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621393762.3U CN206409447U (en) | 2016-12-19 | 2016-12-19 | Engineering machinery auxiliary equipment turns round hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621393762.3U CN206409447U (en) | 2016-12-19 | 2016-12-19 | Engineering machinery auxiliary equipment turns round hydraulic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206409447U true CN206409447U (en) | 2017-08-15 |
Family
ID=59551043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621393762.3U Active CN206409447U (en) | 2016-12-19 | 2016-12-19 | Engineering machinery auxiliary equipment turns round hydraulic control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206409447U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678051A (en) * | 2018-06-29 | 2018-10-19 | 索特传动设备有限公司 | Excavator boom control system and excavator boom control method |
| CN111649023A (en) * | 2019-09-11 | 2020-09-11 | 中煤科工集团西安研究院有限公司 | Buffering oil supplementing system and method for electro-hydraulic double-control motor driving rotation system |
| CN113251013A (en) * | 2021-06-07 | 2021-08-13 | 中冶赛迪技术研究中心有限公司 | Electro-hydraulic direct-drive servo closed differential control driving system of stepping lifting mechanism |
| CN118030664A (en) * | 2024-03-27 | 2024-05-14 | 重庆大学 | Electrohydraulic control system and control method |
-
2016
- 2016-12-19 CN CN201621393762.3U patent/CN206409447U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678051A (en) * | 2018-06-29 | 2018-10-19 | 索特传动设备有限公司 | Excavator boom control system and excavator boom control method |
| CN111649023A (en) * | 2019-09-11 | 2020-09-11 | 中煤科工集团西安研究院有限公司 | Buffering oil supplementing system and method for electro-hydraulic double-control motor driving rotation system |
| CN111649023B (en) * | 2019-09-11 | 2022-04-15 | 中煤科工集团西安研究院有限公司 | Buffering oil supplementing system and method for electro-hydraulic double-control motor driving rotation system |
| CN113251013A (en) * | 2021-06-07 | 2021-08-13 | 中冶赛迪技术研究中心有限公司 | Electro-hydraulic direct-drive servo closed differential control driving system of stepping lifting mechanism |
| CN113251013B (en) * | 2021-06-07 | 2022-08-12 | 中冶赛迪技术研究中心有限公司 | Electro-hydraulic direct-drive servo closed differential control driving system of stepping lifting mechanism |
| CN118030664A (en) * | 2024-03-27 | 2024-05-14 | 重庆大学 | Electrohydraulic control system and control method |
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