GB538413A - Improvements in or relating to servo-controlled mechanisms for steering mechanism and other power machinery - Google Patents
Improvements in or relating to servo-controlled mechanisms for steering mechanism and other power machineryInfo
- Publication number
- GB538413A GB538413A GB1950/40A GB195040A GB538413A GB 538413 A GB538413 A GB 538413A GB 1950/40 A GB1950/40 A GB 1950/40A GB 195040 A GB195040 A GB 195040A GB 538413 A GB538413 A GB 538413A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- gear
- piston
- gears
- differential
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/20—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application
- B62D5/24—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application for worm type
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
538,413. Fluid-pressure servomotors : hydraulic control mechanism. VICKERS Inc. Feb. 1, 1940, No. 1950, Convention date, Feb. 7, 1939. [Classes 69 (ii) and 135] In the operation of steering and like gear by a power unit 9 which may be a Selsyn unit or a hydraulic follow-up unit such as described in Specification 391, 775, [Group XXXI], mechanism is provided for minimizing the lag which may occur between the signal unit 5 and the output shaft 7, which operates the final controlled member. As shown in Fig. 1, the control member 10 of the power member 9 is driven by differential gearing 12 - 15 from the shaft 6 of the signal member which is also connected by gears 21, 22, 23, to the bevel gear 17 of a second differential gear 16 - 20. The gear 18 of this differential is connected by gears 24, 25, 26 to the output shaft 7, and the ring gears 15, 20 of the two differentials. The arrangement is such that as long as the shaft 7 lags behind the shaft 6 rotation of ring gear 20 takes place in such direction that the control member 16 is accelerated to a greater speed than the shaft 6 so that any lag of the shaft 7 is soon overcome, and the motion is synchronized. The gears 15, 20 then remain stationary. In a modification, Fig. 2, the output shaft 7 is driven by a constant displacement hydraulic motor 27 driven by a variable displacement pump 28 operated by a motor 29 and controlled by a tilting block 30 connected to a piston 32 in a cylinder 33 formed in a housing 34 formed with a cylinder 35 in which a piston 36 operates. Pipes 37, 38 supply the cylinders with hydraulic fluid and operation of the control shaft 6 actuates a gear pump 39 which forces the fluid into the housing 34. A differential gear 49 is arranged between the shaft 6 and bevel gears 45, 46, 47, by means of which a second gear pump 40 is driven. If the shaft 6 is moving faster than the shaft 7 the ring gear of the differential rotates slightly and by means of a shaft 54, lever 55, and rod 56 depresses the piston 36 which causes the piston 32 to rise and operate the arm 30 of the pump 28, 80 as to increase the speed of the motor 27 and shaft 7. In a further modification the piston 32 operates in a single cylinder and is normally controlled by a centring spring, and a third gear pump is substituted for the cylinder 35 and piston 36, and this applies the correction factor to the piston 32. The mechanism also operates upon deceleration to correct the lead of the follow-up mechanism.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US538413XA | 1939-02-07 | 1939-02-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB538413A true GB538413A (en) | 1941-08-01 |
Family
ID=21986914
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1950/40A Expired GB538413A (en) | 1939-02-07 | 1940-02-01 | Improvements in or relating to servo-controlled mechanisms for steering mechanism and other power machinery |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB538413A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1561668A3 (en) * | 2004-02-09 | 2005-09-21 | Hitachi Ltd. | Steering transmission device and steering apparatus |
-
1940
- 1940-02-01 GB GB1950/40A patent/GB538413A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1561668A3 (en) * | 2004-02-09 | 2005-09-21 | Hitachi Ltd. | Steering transmission device and steering apparatus |
US7063180B2 (en) | 2004-02-09 | 2006-06-20 | Hitachi, Ltd. | Steering transmission device and steering apparatus |
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