GB650734A - A warning or trip device operable by an endless belt slipping on its driving pulley - Google Patents
A warning or trip device operable by an endless belt slipping on its driving pulleyInfo
- Publication number
- GB650734A GB650734A GB2226347A GB2226347A GB650734A GB 650734 A GB650734 A GB 650734A GB 2226347 A GB2226347 A GB 2226347A GB 2226347 A GB2226347 A GB 2226347A GB 650734 A GB650734 A GB 650734A
- Authority
- GB
- United Kingdom
- Prior art keywords
- belt
- roller
- spindle
- slip
- pulley
- 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
- 239000003245 coal Substances 0.000 abstract 1
- 230000001419 dependent effect Effects 0.000 abstract 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052753 mercury Inorganic materials 0.000 abstract 1
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
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/02—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/04—Control devices, e.g. for safety, warning or fault-correcting detecting slip between driving element and load-carrier, e.g. for interrupting the drive
-
- 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
- F15B5/00—Transducers converting variations of physical quantities, e.g. expressed by variations in positions of members, into fluid-pressure variations or vice versa; Varying fluid pressure as a function of variations of a plurality of fluid pressures or variations of other quantities
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Control Of Conveyors (AREA)
Abstract
650,734. Screw pumps. NATIONAL COAL BOARD, and MAWSON, J. C. Aug. 11, 1947, No. 22263. [Class 110(i)] [Also in Groups XXIV and XXX] A warning or trip device operable by an endless belt slipping on its driving drum or pulley comprises a driven roller or pulley engaged by the belt and arranged to be rotated'thereby at a rate dependent upon the speed of movement of the belt, a rotatable member associated with the driven roller or pulley, means independent of the belt for driving the member in synchronism with the driven roller when the belt is moving without slip and means operable by relative movement between the driven roller and the member resulting from substantial 'slipping of the belt, for operating a warning device or a trip mechanism for stopping the driving drum or pulley. In the embodiment shown, a roller 1 engaged by a mine conveyer belt is rotatably supported by bearings 2 on a spindle 3 which is supported by bearings 6 and provided with a sprocket 7 rotated by a chain drive from the driving mechanism of the conveyer so as to rotate at the same rate as the roller 1 when the belt is running without slip. The interior of the roller is connected by pipes 11, 12 in the spindle and by passages 11b, 16, with an oil reservoir 15 and a cylinder 17 containing an operating plunger 18 for a mercury switch 21 controlling the conveyer drive mechanism. When substantial slip of the belt on its driving drum occurs, the roller 1 rotates at a slower speed than the spindle whereby a screw 10 on the spindle develops pressure in the oil within the roller 1 and this is transmitted through the pipe 16 to the cylinder 17 so as to raise the plunger 18 against its spring 18a and operate the switch 21. A needle valve 19 permits a slight now of oil back to the reservoir 15 to prevent pressure building-up in the cylinder 17 and thus allowing a moderate amount of belt slip without operation of the switch. The switch 21 may control an audible or visible warning device in addition or as an alternative to the operation of the means for stopping the conveyer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2226347A GB650734A (en) | 1947-08-11 | 1947-08-11 | A warning or trip device operable by an endless belt slipping on its driving pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2226347A GB650734A (en) | 1947-08-11 | 1947-08-11 | A warning or trip device operable by an endless belt slipping on its driving pulley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB650734A true GB650734A (en) | 1951-02-28 |
Family
ID=10176531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2226347A Expired GB650734A (en) | 1947-08-11 | 1947-08-11 | A warning or trip device operable by an endless belt slipping on its driving pulley |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB650734A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104097919A (en) * | 2013-04-15 | 2014-10-15 | 四川蓝讯宝迩电子科技有限公司 | Limit protector of rotary chain |
-
1947
- 1947-08-11 GB GB2226347A patent/GB650734A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104097919A (en) * | 2013-04-15 | 2014-10-15 | 四川蓝讯宝迩电子科技有限公司 | Limit protector of rotary chain |
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