CN201991851U - Open-type hydraulic drive system having hydraulic reversing buffering function - Google Patents
Open-type hydraulic drive system having hydraulic reversing buffering function Download PDFInfo
- Publication number
- CN201991851U CN201991851U CN2011201138129U CN201120113812U CN201991851U CN 201991851 U CN201991851 U CN 201991851U CN 2011201138129 U CN2011201138129 U CN 2011201138129U CN 201120113812 U CN201120113812 U CN 201120113812U CN 201991851 U CN201991851 U CN 201991851U
- Authority
- CN
- China
- Prior art keywords
- valve
- hydraulic drive
- brake
- drive motor
- hydraulic
- 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
Images
Abstract
The utility model discloses an open-type hydraulic drive system having a hydraulic reversing buffering function, which comprises an oil tank, a hydraulic drive motor, a duplicate gear pump, an integrated valve, a manual proportional valve and a brake valve, wherein the inlet of the duplicate gear pump is connected with the oil tank, the outlet of the duplicate gear pump is connected with the integrated valve, the oil return end of the integrated valve is connected with the oil tank, the outlet end of the integrated valve is respectively connected with the manual proportional valve and the brake valve, the outlet ends of the manual proportional valve and the brake valve are respectively connected with the hydraulic drive motor, and the oil return end of the manual proportional valve is connected with the oil tank through a counterbalance valve; and a reducing valve is arranged between the brake valve and the integrated valve. When a road roller is reversed, the parking of the road roller is mainly realized by a two-way balance valve inside the hydraulic drive motor and is not realized by a brake, so the road roller is stable when in reversing and parking and is free from shaking. When the road roller is reversed, because of the existence of the counterbalance valve, the interior of a system oil route is free from producing instantaneous impact high pressure, and the service life of the hydraulic drive motor can be improved.
Description
Technical field
The utility model relates to a kind of road roller, relates in particular to a kind of hydraulic system of hydraulic roller.
Background technique
Along with country strengthens the Infrastructure input, various high-grade highways and expressway are rapidly developed, and the demand of road administration building machineries such as road roller also strengthens thereupon.At present, start, commutating, can produce impact when stopping for fear of the mechanical vibration road roller, can the road surface of compacting be damaged, and mechanically operated noise is very big, have a strong impact on surrounding environment, can workmen's body and mind be damaged, serious meeting influences working efficiency, has occurred various types of hydraulic vibration road rollers on the market and has replaced mechanical vibration.A kind of hydraulic vibration open system with two-way overload protective is disclosed as Chinese utility model patent CN201212124; be made up of gear pump, safety overflow valve, manual vibration control valve and oil hydraulic motor, manually the pipeline between vibration control valve and the oil hydraulic motor is provided with the two-way overload protective valve.Make the moment of hydraulic roller, impulse high voltage can not occur in the loop, improve the working life of oil hydraulic motor at starting of oscillation or failure of oscillation; Overload protection by cartridge valve when failure of oscillation in time balances the oil pressure difference in the loop, and vibrator is played damping function, and vibrator is in time stopped, and has improved the working efficiency of road roller.Adopt the road roller of this structure to have following defective: road roller can produce the moment impact high pressure in the system oil-way when commutation, can produce the quality problems of rocking, and has reduced the working life and the rolling road surface quality of hydraulic drive motor.
The model utility content
The purpose of this utility model just provides a kind of open hydraulic drive system with hydraulic pressure commutation pooling feature, make road roller when commutation, can not produce the moment impact high pressure in the system oil-way, can not produce the quality problems of rocking, improve the working life of hydraulic drive motor, improved the rolling road surface quality.
The technological scheme that realizes the utility model purpose is: a kind of open hydraulic drive system with hydraulic pressure commutation pooling feature, comprise fuel tank, hydraulic drive motor, duplex gear pump, integrated valve, manual Proportional valve and brake valve, the import of described duplex gear pump links to each other with described fuel tank by pipeline, its outlet links to each other with described integrated valve, the oil revolving end of described integrated valve links to each other with fuel tank by pipeline, the outlet end of described integrated valve links to each other with brake valve with described manual Proportional valve by pipeline respectively, the outlet end of described manual Proportional valve and brake valve links to each other with hydraulic drive motor respectively, it is characterized in that: the oil revolving end of described manual Proportional valve links to each other with fuel tank with pipeline by back pressure valve; Between described brake valve and integrated valve, be provided with reduction valve.
The utility model compared with prior art has following advantage:
1. the parking in road roller when commutation mainly realizes by bidirectional balanced valve in the hydraulic drive motor, does not realize by break, so road roller is steady when commutating parking, can produce and rock.
2. road roller because the existence of back pressure valve can not produce the moment impact high pressure in the system oil-way, has improved the working life of hydraulic drive motor when commutation.
Description of drawings
Fig. 1 is the hydraulic schematic diagram with open hydraulic drive system of hydraulic pressure commutation pooling feature described in the utility model
1. fuel tank 2. duplex gear pump 3. back pressure valves 4. manual Proportional valve 5. hydraulic drive motors 6. brake valves 7. reduction valve 8. integrated valves
Embodiment
Following examples are used to illustrate the utility model, but are not used for limiting scope of the present utility model, and all technological schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be limited by every claim.
As can be seen from Figure 1, open hydraulic drive system with hydraulic pressure commutation pooling feature, comprise fuel tank 1, hydraulic drive motor 5, duplex gear pump 2, integrated valve 8, manual Proportional valve 4 and brake valve 6, the import of described duplex gear pump 2 links to each other with described fuel tank 1 by pipeline, its outlet links to each other with described integrated valve 8, the oil revolving end of described integrated valve 8 links to each other with fuel tank 1 by pipeline, the outlet end of described integrated valve 8 links to each other with brake valve 6 with described manual Proportional valve 4 by pipeline respectively, the outlet end of described manual Proportional valve 4 and brake valve 6 links to each other with hydraulic drive motor 5 respectively, it is characterized in that: the oil revolving end of described manual Proportional valve 4 links to each other with fuel tank 1 with pipeline by back pressure valve 3; Between described brake valve 6 and integrated valve 8, be provided with reduction valve 7.
Its working principle: manually Proportional valve 4 is in forward gears, by the high pressure oil of duplex gear pump 2 through integrated valve 8, manually ratio/4 are to hydraulic drive motor 5, flow back to fuel tank 1 through back pressure valve 3 again, the pressure oil of brake circuit came from and turned to oil return this moment, the break of hydraulic drive motor 5 is in normally open, and road roller can be walked; When manually Proportional valve 4 is in meta (park), no high pressure oil enters into hydraulic drive motor 5, so road roller is in vehicle stop state, and this moment, diesel engine was in running order, and brake circuit has pressure oil to exist, and break also is in normally open, parking during the road roller commutation mainly realizes by bidirectional balanced valve in the hydraulic drive motor 5, do not realize,, can not produce and rock so road roller is steady when commutation is stopped by break.
Claims (1)
1. the open hydraulic drive system that has hydraulic pressure commutation pooling feature, comprise fuel tank (1), hydraulic drive motor (5), duplex gear pump (2), integrated valve (8), manual Proportional valve (4) and brake valve (6), the import of described duplex gear pump (2) links to each other with described fuel tank (1) by pipeline, its outlet links to each other with described integrated valve (8), the oil revolving end of described integrated valve (8) links to each other with fuel tank (1) by pipeline, the outlet end of described integrated valve (8) links to each other with brake valve (6) with described manual Proportional valve (4) by pipeline respectively, the outlet end of described manual Proportional valve (4) and brake valve (6) links to each other with hydraulic drive motor (5) respectively, it is characterized in that: the oil revolving end of described manual Proportional valve (4) links to each other with fuel tank (1) with pipeline by back pressure valve (3); Between described brake valve (6) and integrated valve (8), be provided with reduction valve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201138129U CN201991851U (en) | 2011-04-18 | 2011-04-18 | Open-type hydraulic drive system having hydraulic reversing buffering function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201138129U CN201991851U (en) | 2011-04-18 | 2011-04-18 | Open-type hydraulic drive system having hydraulic reversing buffering function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201991851U true CN201991851U (en) | 2011-09-28 |
Family
ID=44668340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201138129U Expired - Fee Related CN201991851U (en) | 2011-04-18 | 2011-04-18 | Open-type hydraulic drive system having hydraulic reversing buffering function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201991851U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105621302A (en) * | 2016-03-24 | 2016-06-01 | 湖南师范大学 | Anti-stall device and crane |
| CN107131162A (en) * | 2017-05-04 | 2017-09-05 | 洛阳中重自动化工程有限责任公司 | A kind of hydraulic control system for the double drive devices at a slow speed of large-sized grinder |
-
2011
- 2011-04-18 CN CN2011201138129U patent/CN201991851U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105621302A (en) * | 2016-03-24 | 2016-06-01 | 湖南师范大学 | Anti-stall device and crane |
| CN105621302B (en) * | 2016-03-24 | 2018-01-02 | 湖南师范大学 | anti-stall device and crane |
| CN107131162A (en) * | 2017-05-04 | 2017-09-05 | 洛阳中重自动化工程有限责任公司 | A kind of hydraulic control system for the double drive devices at a slow speed of large-sized grinder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102312938B (en) | Composite box grind type hydraulic coupler | |
| CN104534053A (en) | Combined hydrodynamic transmission device and starter | |
| CN102312982B (en) | Composite torque limiting water medium hydraulic coupler | |
| CN103939562B (en) | A kind of compound rear auxiliary room prolonged type load limiting type of constant filling fluid coupling | |
| CN201991851U (en) | Open-type hydraulic drive system having hydraulic reversing buffering function | |
| CN101113597B (en) | Prime move output torque equalising control device | |
| CN202047346U (en) | Closed hydraulic system for vibration shifting between front wheel and rear wheel of road roller | |
| CN102312976B (en) | A kind of composite constant charge type hydraulic coupler | |
| CN102312983B (en) | Compound fluid coupling driven by syntropy inner meshed planetary gear | |
| CN105090391A (en) | Compound type torque limited type aqueous medium fluid coupling and starter | |
| CN102312977B (en) | Composite box type hydraulic coupler | |
| CN200945862Y (en) | Mining explosion-proof rail common-track locomotive hydraulic transmission gear | |
| CN102003432A (en) | Electro-hydraulic actuator | |
| CN105042014A (en) | Hydraulic coupler and starter driven by combined harmonic gear | |
| CN108928204A (en) | Can energy regenerating automobile-used mixing damping device and its control method | |
| CN201212124Y (en) | Hydraulic vibrating open type system with bidirectional overload protection | |
| CN2769240Y (en) | Hydraulic system for portal crane | |
| CN104696472B (en) | A kind of composite axial-flow hydrotransmitter and stepless speed variator | |
| CN202228296U (en) | Rotational speed induction type variable displacement constant flow pump | |
| CN208295026U (en) | A kind of R formula vehicle shock absorber in parallel that single turbine recovers energy | |
| CN102312980B (en) | Compound postpositional gear box type fluid coupling | |
| CN2730925Y (en) | Transmission device for hydraulic driven road roller | |
| CN104500680A (en) | Compound type rear auxiliary chamber extension type torque-limiting hydraulic coupler and starter | |
| CN104534054A (en) | Combined variable speed fluid coupling and starter | |
| CN104455299A (en) | Compound-type constant-filling hydraulic coupler and starter unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: JIANGSU JUNMA ROAD ROLLER CO., LTD. Assignor: Zhu Tianxi Contract record no.: 2012320000151 Denomination of utility model: Open-type hydraulic drive system having hydraulic reversing buffering function Granted publication date: 20110928 License type: Exclusive License Record date: 20120301 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20120418 |