GB623216A - Improvements in or relating to dynamometers - Google Patents
Improvements in or relating to dynamometersInfo
- Publication number
- GB623216A GB623216A GB3523846A GB3523846A GB623216A GB 623216 A GB623216 A GB 623216A GB 3523846 A GB3523846 A GB 3523846A GB 3523846 A GB3523846 A GB 3523846A GB 623216 A GB623216 A GB 623216A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oil
- idler
- gear
- shaft
- idler gear
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/14—Rotary-transmission dynamometers wherein the torque-transmitting element is other than a torsionally-flexible shaft
- G01L3/1464—Rotary-transmission dynamometers wherein the torque-transmitting element is other than a torsionally-flexible shaft involving screws and nuts, screw-gears or cams
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/14—Rotary-transmission dynamometers wherein the torque-transmitting element is other than a torsionally-flexible shaft
- G01L3/1464—Rotary-transmission dynamometers wherein the torque-transmitting element is other than a torsionally-flexible shaft involving screws and nuts, screw-gears or cams
- G01L3/1471—Rotary-transmission dynamometers wherein the torque-transmitting element is other than a torsionally-flexible shaft involving screws and nuts, screw-gears or cams using planet wheels or conical gears
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Retarders (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
623,216. Rotary-transmission dynamometers. BRISTOL AEROPLANE CO., Ltd., OWNER, F. M., and MARCHANT, C. I. Nov. 27, 1946, No. 35238. [Class 106 (ii)] A dynamometer comprises an idler gear for transmitting the power to be indicated, means to support the idler for rotation, means for carrying this support for movement about an axis eccentric with the axis of rotation of the gear, and a torque indicator actuated by said support-carrying means due to the resultant of the tooth pressures on the idler. The invention is described as applied to a power plant in an aircraft in which a pair of gas turbine engines lie side-by-side, each transmitting to an output shaft 10 disposed between them, the shaft 10 being the input shaft of a reduction gearing which drives two counter-rotating airscrews. A pinion 17 on each turbine shaft 12 drives a gear 18 fast on the shaft 10 through an idler gear 19. Each idler gear is supported by a roller bearing upon a sleeve 21 having an eccentric bore to receive a pin 22 carried by a housing 9 (not shown). Each sleeve 21 has a radiallyextending arm 23, the free end of which is connected with a piston 25 by a rod 24. The piston 25 is in a cylinder 26 through which there circulates lubricating oil under pressure from a pump 27 driven by one or both turbines. A pressure gauge 30 in the pilot's cockpit is connected to pipe line from the pump 27 and is graduated to register torque units. The resultant force F produced by loads f<SP>1</SP> and ff<SP>2</SP> on the teeth of the idler gear 19 passes through the centre of the idler, and produces a moment about the centre of the pin 22 which tends to rotate the sleeve 21 upon the pin. This movement is transmitted to the arm 23 and hence to the oil in the cylinder 26, so that the variations in pressure in the oil indicate the torque transmitted through the idler gear 19. The oil in the cylinder 26 leaks past the piston 25 to within the housing 9 and is returned to the pump 27 to ensure any air entrapped in the oil is carried away and to reduce the tendency for the oil to freeze at high altitudes. The oilfilled cylinders 26 also act as hydraulic dampers for the transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3523846A GB623216A (en) | 1946-11-27 | 1946-11-27 | Improvements in or relating to dynamometers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3523846A GB623216A (en) | 1946-11-27 | 1946-11-27 | Improvements in or relating to dynamometers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB623216A true GB623216A (en) | 1949-05-13 |
Family
ID=10375446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3523846A Expired GB623216A (en) | 1946-11-27 | 1946-11-27 | Improvements in or relating to dynamometers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB623216A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2979943A (en) * | 1957-03-15 | 1961-04-18 | Napier & Son Ltd | Transmission gearing including means for measuring torque |
| CN110895174A (en) * | 2019-12-26 | 2020-03-20 | 上海尚实能源科技有限公司 | Dynamic torque measuring mechanism of turbine engine |
-
1946
- 1946-11-27 GB GB3523846A patent/GB623216A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2979943A (en) * | 1957-03-15 | 1961-04-18 | Napier & Son Ltd | Transmission gearing including means for measuring torque |
| CN110895174A (en) * | 2019-12-26 | 2020-03-20 | 上海尚实能源科技有限公司 | Dynamic torque measuring mechanism of turbine engine |
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