GB857922A - Improvements in hydraulic variable-speed transmissions - Google Patents
Improvements in hydraulic variable-speed transmissionsInfo
- Publication number
- GB857922A GB857922A GB297757A GB297757A GB857922A GB 857922 A GB857922 A GB 857922A GB 297757 A GB297757 A GB 297757A GB 297757 A GB297757 A GB 297757A GB 857922 A GB857922 A GB 857922A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pump
- motor
- disc valve
- transmissions
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
- F16H61/431—Pump capacity control by electro-hydraulic control means, e.g. using solenoid valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Motors (AREA)
- Rotary Pumps (AREA)
Abstract
857,922. Hydraulic transmissions. WESTON, B. April 28, 1958 [Jan. 28, 1957], No. 2977/57. Class 69 (2). The major axes of the stationary elliptical cams 6, 7 against which the spring biased rollers 8 of the pump and motor of an hydraulic transmission react, are inclined at 45 degrees to each other. A disc valve 11 is rotatable between limits by hydraulic pressure on one side or the other of vane 12. In the neutral position shown in Fig. 2, where the four slots 26 of the valve 11 are arranged so that each pump axis is cut symmetrically by two slots, the pump output is zero, since of the grooves 5 of the pump covered by any one slot 26, an equal number are decreasing in volume as are increasing. As disc valve 11 is rotated, the pump output increases from zero and the ability of the motor to absorb liquid decreases, causing an increasing motor speed. The direction of rotation of the motor depends on the direction of rotation of the disc valve 11 from its neutral position. The invention may be applied to transmissions with other types of pump and motor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB297757A GB857922A (en) | 1957-01-28 | 1957-01-28 | Improvements in hydraulic variable-speed transmissions |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB297757A GB857922A (en) | 1957-01-28 | 1957-01-28 | Improvements in hydraulic variable-speed transmissions |
Publications (1)
Publication Number | Publication Date |
---|---|
GB857922A true GB857922A (en) | 1961-01-04 |
Family
ID=9749592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB297757A Expired GB857922A (en) | 1957-01-28 | 1957-01-28 | Improvements in hydraulic variable-speed transmissions |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB857922A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108161984A (en) * | 2018-02-12 | 2018-06-15 | 西安正安环境技术有限公司 | Robot hydraulic knuckle module |
-
1957
- 1957-01-28 GB GB297757A patent/GB857922A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108161984A (en) * | 2018-02-12 | 2018-06-15 | 西安正安环境技术有限公司 | Robot hydraulic knuckle module |
CN108161984B (en) * | 2018-02-12 | 2023-09-01 | 深圳市球形动力科技有限公司 | Hydraulic joint module of robot |
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