CN110130251A - It is a kind of can the switching of high low-speed mode road sweeper running gear - Google Patents
It is a kind of can the switching of high low-speed mode road sweeper running gear Download PDFInfo
- Publication number
- CN110130251A CN110130251A CN201910535252.7A CN201910535252A CN110130251A CN 110130251 A CN110130251 A CN 110130251A CN 201910535252 A CN201910535252 A CN 201910535252A CN 110130251 A CN110130251 A CN 110130251A
- Authority
- CN
- China
- Prior art keywords
- speed
- pipeline
- repairing
- high low
- road
- 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.)
- Pending
Links
- 241001417527 Pempheridae Species 0.000 title claims abstract description 24
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 239000002828 fuel tank Substances 0.000 claims abstract description 14
- 239000003921 oil Substances 0.000 claims description 13
- 239000010720 hydraulic oil Substances 0.000 claims description 9
- 238000013016 damping Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000010408 sweeping Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000009194 climbing Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/023—Excess flow valves, e.g. for locking cylinders in case of hose burst
Abstract
It is of the invention it is a kind of can high low-speed mode switching road sweeper running gear, including engine and four driving wheels, fluid power system is provided between the engine and the driving wheel, the engine drives four driving wheels to rotate by the fluid power system；The fluid power system includes fuel tank, variable pump and four double speed hydraulic motors, and closed system is formed between the variable pump and four double speed hydraulic motors, is also connected with oil-supplementing system and speed-regulating system in the closed system；The closed system includes inlet line, the first pipeline road and drain line, the oil-supplementing system includes slippage pump, repairing check valve and repairing pipeline, and the speed-regulating system includes pressure switch, high low speed switching solenoid valve, speed regulation pipeline and the second output pipe.It is simple with structure, easy to control, the advantages of driving force and driving speed can be taken into account.
Description
Technical field
The present invention relates to road sweeper technical fields, and in particular to road sweeper fluid power system.
Background technique
Road sweeper be will sweep the floor, the integrated refuse cleaning vehicle that dust suction combines, have work efficiency is high, cleaning cost
The advantages that low, cleaning effect is good, and security performance is high, and economic rate of return is high, has been widely used in major small and medium-sized cities road
Cleaning works.
Currently, the hydraulic four-wheel drive system that the road sweeper of China Diesel power is not born properly, in order to guarantee road sweeper
Driving force just needs to select the hydraulic motor of huge discharge to drive, and such fluid power system has a driving force, but complete machine
Driving speed is generally relatively low, as long as general 15km/h.In order to guarantee that the speed of road sweeper can only just select a kind of horse of small displacement
Up to driving, the vehicle speed of sweeping the floor that the speed of complete machine can accomplish and external advanced country does is close, the transition speed of about 30km/h,
But such general climbing capacity of road sweeper is poor, it is not handy or even plain city for the city in domestic more mountain areas
Road serrated edge does not just increase.To sum up, the fluid power system of the small-sized road sweeper of diesel oil currently on the market, has no idea same
When take into account driving force and driving speed.
Therefore, how existing road sweeper fluid power system is improved, so that it is overcome the above problem, is this field
Technical staff's urgent problem to be solved.
Summary of the invention
The purpose of the present invention is to provide a kind of structure it is simple, it is easy to control, driving force and driving speed can be taken into account
Can the switching of high low-speed mode road sweeper running gear.
To achieve the above objectives, the technical solution adopted by the present invention are as follows: it is a kind of can high low-speed mode switching garage of sweeping the floor
Walking system, including engine and four driving wheels, are provided with fluid power system, institute between the engine and the driving wheel
It states engine and drives four driving wheels to rotate by the fluid power system；It is characterized by:
The fluid power system includes fuel tank, variable pump and four double speed hydraulic motors, the variable pump and four institutes
It states and is formed with closed system between double speed hydraulic motor, be also connected with oil-supplementing system and speed-regulating system in the closed system；
The closed system includes inlet line, the first pipeline road and drain line, and the oil-supplementing system includes repairing
Pump, repairing check valve and repairing pipeline, the speed-regulating system include pressure switch, high low speed switching solenoid valve, speed regulation pipeline
With the second output pipe；
The slippage pump and the variable series connection of pumps, the inlet line connects the fuel tank and the slippage pump, described
Variable pump connects first pipeline road, and the repairing pipeline is simultaneously connected to first pipeline road, the repairing check valve
It is two, and is respectively arranged at repairing pipeline both ends, the repairing check valve only allows hydraulic oil from the repairing pipeline
Into the closed system；First pipeline road connects described double speed hydraulic motor one end, and the double speed hydraulic motor is another
One end connects the drain line, and the drain line connects the fuel tank；
The pressure switch is connected on first pipeline road, repairing pipeline described in the speed regulation piping connection,
The high low speed switching solenoid valve side described in the speed regulation piping connection, the high low speed switching solenoid valve other side connect institute
The second pipeline road is stated, second pipeline road connects described double speed hydraulic motor one end；And the high low speed switches electromagnetism
Valve is acted according to the pressure switch signal.
As an improvement, also setting up on the repairing pipeline, there are three safety valves, and three safety valves are respectively arranged at
Between repairing check valve both ends and two repairing check valves.
Further, wherein a repairing check valve both ends are additionally provided with damping hole.
As an improvement, being provided with oil absorption filter on the inlet line, repairing filtering is provided on the repairing pipeline
Device.Filter keeps the hydraulic oil into hydraulic system purer.
As an improvement, compensation conduit is additionally provided between the double speed hydraulic motor and the fuel tank, the compensation conduit
On be provided with non-return valve, the non-return valve only allows hydraulic oil to enter the double speed hydraulic motor from the fuel tank.Work as road sweeper
When high speed descending, hydraulic oil flow at high speed in closed system may make to form negative pressure in system, and there are security risks；And it compensates
Pipeline is directly connected to mailbox, when forming negative pressure in closed system, closed system conveying hydraulic oil can be pressed to by atmosphere, is protected
The pressure balance in closed system is held, avoids breaking down due to for negative pressure in system.
Compared with the prior art, the advantages of the present invention are as follows:
1, the mechanical energy of engine can be delivered to driving wheel by closed system, because the reason of efficiency, in closed system
Hydraulic fluid leak is had, oil-supplementing system is exactly for carrying out repairing to closed system.Under normal circumstances, repairing flow is workflow
The 1/3 of amount, for oil compensation pressure generally in 15-25bar, repairing flow and pressure will be according to the drive characteristics and hydraulic part efficiency of complete machine
It determines, sweeper driving is relatively steady, and oil compensation pressure 15bar is suitable.Two repairing check valves are to give closed system repairing, which
One lateral pressure is low with regard to repairing to that side, and two repairing check valves are according to pressure automatic work.Safety valve is to limit that this is hydraulic
The integral pressure of system, plays the role of safeguard protection.0.8 damping hole is for site in the parking of difficult to find road sweeper and to retreat
It walks soft.
2, it should be noted that control crank can change the variable disk tilt angle of variable pump, that is, change variable pump
Discharge capacity and direction, to change output revolving speed and the direction of fixed displacement motor.Since the angle of the variable disk of variable pump can be adjusted continuously
It is whole, so the output revolving speed of drive motor is also consecutive variations, and then realizes the electrodeless variable-speed of fluid power system, to meet
To the requirement of driving system, (driving speed will change sweeper, but working fan revolving speed cannot become under complex working conditions
Change).
3, pressure switch and high low speed switching solenoid valve cooperate.When the first pipeline road of pressure switch detection
Oil pressure when being less than predetermined value, hydraulic fluid flow rate in high low speed switching solenoid valve control speed regulation pipeline, it is low that road sweeper is in high speed
Power operation mode；When the oil pressure of the first pipeline road of pressure switch detection is greater than predetermined value, high low speed switches electromagnetism
Valve regulation adjusts the speed hydraulic fluid flow rate in pipeline, and road sweeper is in the high power operation mode of low speed.To sum up, speed-regulating system adds
Enter so that fluid power system that driving speed may be implemented is electrodeless adjustable, realize that drive motor carries out high low speed switching, energy at any time
Oil consumption is reduced, sweeping efficiency is improved, reduces labor intensity of workers, and safe and reliable.
Detailed description of the invention
Fig. 1 is working principle diagram according to a preferred embodiment of the present invention.
Specific embodiment
It is described below for disclosing the present invention so that those skilled in the art can be realized the present invention.It is excellent in being described below
Embodiment is selected to be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.
In the description of the present invention, it should be noted that " transverse direction ", " vertical if any term " center " for the noun of locality
To ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top",
The indicating positions such as "bottom", "inner", "outside", " clockwise ", " counterclockwise " and positional relationship are orientation based on the figure or position
Relationship is set, the narration present invention is merely for convenience of and simplifies description, rather than the device or element of indication or suggestion meaning are necessary
It constructs and operates with specific orientation, with particular orientation, should not be understood as limiting specific protection scope of the invention.
As shown in Figure 1, a preferred embodiment of the present invention includes engine 100 and four driving wheels 200, engine
Fluid power system 300 is provided between 100 and driving wheel 200, engine 100 drives four by fluid power system 300
Driving wheel 200 rotates.Itself it is critical that:
Fluid power system 300 includes fuel tank 1, variable pump 2 and four double speed hydraulic motors 3, variable pump 1 and four double speeds
It is formed with closed system 4 between hydraulic motor 3, oil-supplementing system 5 and speed-regulating system 6 are also connected in closed system 4.
It is specific:
Closed system 4 includes inlet line 41, the first pipeline road 42 and drain line 43, and oil-supplementing system 5 includes repairing
Pump 51, repairing check valve 52 and repairing pipeline 53, speed-regulating system 6 include pressure switch 61, high low speed switching solenoid valve 62, adjust
Fast pipeline 63 and the second output pipe 64.
Slippage pump 51 and variable series connection of pumps 2, inlet line 41 connect fuel tank 1 and slippage pump 51, and the connection first of variable pump 2 is defeated
Oil pipe line 42, repairing pipeline 53 are simultaneously connected to the first pipeline road 42, and repairing check valve 52 is two, and is respectively arranged at repairing pipe
53 both ends of road, 52 permission hydraulic oil of repairing check valve enter closed system 4 from repairing pipeline 53；The connection of first pipeline road 42
3 one end of double speed hydraulic motor, 3 other end of double speed hydraulic motor connect drain line 43, and drain line 43 connects fuel tank 1.
Pressure switch 61 is connected on the first pipeline road, and speed regulation pipeline 63 connects repairing pipeline 53, adjusts the speed pipeline 63
High 62 side of low speed switching solenoid valve is connected, high 62 other side of low speed switching solenoid valve connects the second pipeline road 64, and second is defeated
Oil pipe line 64 connects 3 one end of double speed hydraulic motor；And high low speed switching solenoid valve 62 is moved according to 61 information of pressure switch
Make.
In addition, also setting up on repairing pipeline 53, there are three safety valves 54, and three safety valves 54 are respectively arranged at repairing list
To between 52 both ends of valve and two repairing check valves 52.Wherein 52 both ends of a repairing check valve are additionally provided with damping hole 55.It inhales
It is provided with oil absorption filter 44 on oil pipe line 41, repairing filter 56 is provided on repairing pipeline 53.Double speed hydraulic motor 3 and oil
It is additionally provided with compensation conduit 7 between case 1, non-return valve 71 is provided on compensation conduit 7, the non-return valve only allows hydraulic oil from oil
Case 1 enters double speed hydraulic motor 3.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.The present invention claims protection scope by appended claims and its
Equivalent defines.
Claims (5)
1. one kind can the switching of high low-speed mode road sweeper running gear, including engine and four driving wheels, the engine
Fluid power system is provided between the driving wheel, the engine is driven described in four by the fluid power system
Driving wheel rotation；It is characterized by:
The fluid power system includes fuel tank, variable pump and four double speed hydraulic motors, the variable pump and four it is described double
It is formed with closed system between speed hydraulic motor, is also connected with oil-supplementing system and speed-regulating system in the closed system；
The closed system includes inlet line, the first pipeline road and drain line, and the oil-supplementing system includes slippage pump, mends
Oily check valve and repairing pipeline, the speed-regulating system include pressure switch, high low speed switching solenoid valve, speed regulation pipeline and second
Output pipe；
The slippage pump and the variable series connection of pumps, the inlet line connect the fuel tank and the slippage pump, the variable
Pump connects first pipeline road, and the repairing pipeline is simultaneously connected to first pipeline road, and the repairing check valve is two
It is a, and repairing pipeline both ends are respectively arranged at, the repairing check valve only allows hydraulic oil to enter from the repairing pipeline
The closed system；First pipeline road connects described double speed hydraulic motor one end, the double speed hydraulic motor other end
The drain line is connected, the drain line connects the fuel tank；
The pressure switch is connected on first pipeline road, repairing pipeline described in the speed regulation piping connection, described
Adjust the speed the high low speed switching solenoid valve side described in piping connection, high low speed switching solenoid valve other side connection described the
Two pipeline roads, second pipeline road connect described double speed hydraulic motor one end；And the high low speed switching solenoid valve root
It is acted according to the pressure switch signal.
2. one kind according to claim 1 can the switching of high low-speed mode road sweeper running gear, it is characterised in that:
Safety valve there are three being also set up on the repairing pipeline, and three safety valves are respectively arranged at the repairing check valve
Between both ends and two repairing check valves.
3. one kind according to claim 2 can the switching of high low-speed mode road sweeper running gear, it is characterised in that: wherein
One repairing check valve both ends are additionally provided with damping hole.
4. one kind according to claim 1 can the switching of high low-speed mode road sweeper running gear, it is characterised in that:
It is provided with oil absorption filter on the inlet line, is provided with repairing filter on the repairing pipeline.
5. one kind according to claim 1 can the switching of high low-speed mode road sweeper running gear, it is characterised in that:
It is additionally provided with compensation conduit between the double speed hydraulic motor and the fuel tank, is provided with check on the compensation conduit
Valve, the non-return valve only allow hydraulic oil to enter the double speed hydraulic motor from the fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910535252.7A CN110130251A (en) | 2019-06-20 | 2019-06-20 | It is a kind of can the switching of high low-speed mode road sweeper running gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910535252.7A CN110130251A (en) | 2019-06-20 | 2019-06-20 | It is a kind of can the switching of high low-speed mode road sweeper running gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110130251A true CN110130251A (en) | 2019-08-16 |
Family
ID=67578768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910535252.7A Pending CN110130251A (en) | 2019-06-20 | 2019-06-20 | It is a kind of can the switching of high low-speed mode road sweeper running gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110130251A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709730A (en) * | 2021-01-06 | 2021-04-27 | 武汉船用机械有限责任公司 | Closed hydraulic control system of slewing mechanism and application method thereof |
| CN117167353A (en) * | 2023-09-27 | 2023-12-05 | 徐工集团工程机械股份有限公司科技分公司 | Double-speed closed hydraulic traveling system and method for skid steer loader |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19602196A1 (en) * | 1996-01-23 | 1997-07-24 | Danfoss As | Hydraulic drive system for cross-country farm vehicle |
| EP1391639A2 (en) * | 2002-08-17 | 2004-02-25 | CLAAS Selbstfahrende Erntemaschinen GmbH | Oil volume compensation in a hydraulic circuit of a hydrostatic drive in an automotive working machine |
| CN201416161Y (en) * | 2009-05-12 | 2010-03-03 | 湖南恒润高科有限公司 | Hydraulic control device of road sweeper |
| CN204878092U (en) * | 2015-06-09 | 2015-12-16 | 聂勤 | Closed hydraulic power control system |
| CN108425899A (en) * | 2018-05-15 | 2018-08-21 | 山推工程机械股份有限公司 | A kind of hydraulic system of bulldozer |
| CN210561903U (en) * | 2019-06-20 | 2020-05-19 | 宁波易捷环卫设备有限公司 | Sweeper traveling system capable of switching high-speed mode and low-speed mode |
-
2019
- 2019-06-20 CN CN201910535252.7A patent/CN110130251A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19602196A1 (en) * | 1996-01-23 | 1997-07-24 | Danfoss As | Hydraulic drive system for cross-country farm vehicle |
| EP1391639A2 (en) * | 2002-08-17 | 2004-02-25 | CLAAS Selbstfahrende Erntemaschinen GmbH | Oil volume compensation in a hydraulic circuit of a hydrostatic drive in an automotive working machine |
| CN201416161Y (en) * | 2009-05-12 | 2010-03-03 | 湖南恒润高科有限公司 | Hydraulic control device of road sweeper |
| CN204878092U (en) * | 2015-06-09 | 2015-12-16 | 聂勤 | Closed hydraulic power control system |
| CN108425899A (en) * | 2018-05-15 | 2018-08-21 | 山推工程机械股份有限公司 | A kind of hydraulic system of bulldozer |
| CN210561903U (en) * | 2019-06-20 | 2020-05-19 | 宁波易捷环卫设备有限公司 | Sweeper traveling system capable of switching high-speed mode and low-speed mode |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709730A (en) * | 2021-01-06 | 2021-04-27 | 武汉船用机械有限责任公司 | Closed hydraulic control system of slewing mechanism and application method thereof |
| CN117167353A (en) * | 2023-09-27 | 2023-12-05 | 徐工集团工程机械股份有限公司科技分公司 | Double-speed closed hydraulic traveling system and method for skid steer loader |
| CN117167353B (en) * | 2023-09-27 | 2024-04-09 | 徐工集团工程机械股份有限公司科技分公司 | Double-speed closed hydraulic traveling system and method for skid steer loader |
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