ES367741A1 - Hydraulic driving device for the working tools of terraplen works machines. (Machine-translation by Google Translate, not legally binding) - Google Patents
Hydraulic driving device for the working tools of terraplen works machines. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES367741A1 ES367741A1 ES367741A ES367741A ES367741A1 ES 367741 A1 ES367741 A1 ES 367741A1 ES 367741 A ES367741 A ES 367741A ES 367741 A ES367741 A ES 367741A ES 367741 A1 ES367741 A1 ES 367741A1
- Authority
- ES
- Spain
- Prior art keywords
- oil
- valve
- return
- piston
- control
- 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
Links
Classifications
-
- 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
-
- 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
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
-
- 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
- E02F9/2292—Systems with two or more pumps
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
Hydraulic drive device for work tools of embankment machines, characterized in that a control slide with a front valve, which in its known form contains a valve piston, serves as control element for each working piston subjected to a weak spring force and with a throttling bore that communicates the pump side of the pump with a chamber on the back side of the valve piston, this chamber being able to communicate through an overpressure valve, which determines the maximum pressure in addition, the secondary flow of the oil that in the valve through the throttle bore in the piston flows into the chamber on the rear side of the piston can be released through the mentioned control spool. Freely to the return and causes the plunger of the upstream valve to rise and leave the return to the to the main stream of the oil, and because finally for each cylinder with its working piston a pump of equal power is provided, being inserted between both pumps and the cylinders to be fed by them with the corresponding control slides a bypass valve, through from which the two pressure medium currents produced by the pumps are either directed separately to the control spool and the corresponding cylinder, or are joined together, whereby this bypass valve in the position indicated first leaves in for each control spool, its own return behavior for the secondary oil flow is released and consequently the return of its main oil flow is also released, and in the second mentioned position closes the return of the secondary flow of the oil. Oil for a control slide and consequently also the return of its main oil flow and at the same time obliges the co secondary flow of the oil that returns from the other control slide to pass through this a control slide. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681759867 DE1759867C (en) | 1968-06-15 | Hydraulic control device for earth moving machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES367741A1 true ES367741A1 (en) | 1971-04-16 |
Family
ID=5695829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES367741A Expired ES367741A1 (en) | 1968-06-15 | 1969-05-27 | Hydraulic driving device for the working tools of terraplen works machines. (Machine-translation by Google Translate, not legally binding) |
Country Status (4)
| Country | Link |
|---|---|
| AT (1) | AT291330B (en) |
| BE (1) | BE734107A (en) |
| ES (1) | ES367741A1 (en) |
| FR (1) | FR2010953A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE792617A (en) * | 1971-12-13 | 1973-06-12 | Caterpillar Tractor Co | Hydraulic circuit for an excavator. |
| AU631727B2 (en) * | 1990-03-09 | 1992-12-03 | Kubota Corporation | Hydraulic circuit for a working vehicle having a plurality of hydraulic actuators |
| KR101769644B1 (en) | 2010-04-30 | 2017-08-30 | 이턴 코포레이션 | Multiple fluid pump combination circuit |
| MX2013015289A (en) | 2011-07-01 | 2014-03-31 | Eaton Corp | Hydraulic systems utilizing combination open-and closed-loop pump systems. |
-
1969
- 1969-05-05 AT AT433169A patent/AT291330B/en not_active IP Right Cessation
- 1969-05-27 ES ES367741A patent/ES367741A1/en not_active Expired
- 1969-06-02 FR FR6917974A patent/FR2010953A1/fr not_active Withdrawn
- 1969-06-05 BE BE734107D patent/BE734107A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2010953A1 (en) | 1970-02-20 |
| AT291330B (en) | 1971-07-12 |
| DE1759867A1 (en) | 1971-10-14 |
| BE734107A (en) | 1969-11-17 |
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