GB944100A - Control of endless conveyor belts - Google Patents
Control of endless conveyor beltsInfo
- Publication number
- GB944100A GB944100A GB2657460A GB2657460A GB944100A GB 944100 A GB944100 A GB 944100A GB 2657460 A GB2657460 A GB 2657460A GB 2657460 A GB2657460 A GB 2657460A GB 944100 A GB944100 A GB 944100A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- belt
- slip
- tension
- roller
- 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
- 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
- B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
- B65G23/44—Belt or chain tensioning arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drives For Endless Conveyors (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
944,100. Fluid-pressure servomotor control systems. COUNCIL FOR SCIENTIFIC & INDUSTRIAL RESEARCH. Oct. 30,1961 [July 29, 1960], No. 26574/60. Heading G3P. [Also in Division B8] A hydraulic system for controlling the tension in a conveyer belt 11 is controlled by the slip of the belt on a driving roller 17. A sun wheel 15 of a differential gear is coupled by gearing 14 to a roller 12 the surface of which has a high coefficient of friction for the material of the belt 11. The other sun wheel 16 is coupled to the belt driving roller 17, and the planetary system 18 of the differential gear is coupled by a slipping clutch to a crank arm 21 which moves between stops 22 and which is linked to the sliding member 23 of a slip control valve 24. As long as the slip remains at the permitted value the arm 21 floats between the stops 22 but when the slip becomes excessive or falls below an appropriate value, the arm abuts one stop or the other and operates the valve 24. The clutch 19 enables the arm to rest against a stop 22 while the sun wheels 15, 16 rotate at different speeds, as long as the slip is outside permissible limits. The valve 24 controls a supply of fluid under pressure to a double acting hydraulic motor 25 of which a piston 27 is connected to a belt tension adjusting roller 29. To measure the tension, a loop of the belt also passes over a roller 31 on a shaft 32 one end of which is journalled in a bearing block 33 capable of slight displacement in a direction normal to the shaft in a support 34 of U-form. Pressure of liquid in a recess 35 connected by a metering orifice 37 with a passage 36 varies considerably with small changes in the position of the block 33. A further passage 38 leads from the recess to a pressure responsive valve 39, and an annular drain 41 is connected by a passage 42 to a reservoir 43. The opening of the valve 39 admits fluid under pressure into a space 44 within the slip control valve 24 to move an intermediate member 45 against the bias of a spring 46. The intermediate member incorporates ports 47, 58, 60 which move out of alignment with passages 48, 59, 61 when the member is moved by the opening of the pressure responsive valve 39. An over-riding effect on the control of pressure to the motor 25 controlling the position of the tensioning roller 29 is thus obtained. If the intermediate member 45 remains in its normal position an increase in belt slip will cause the sliding member 23 to be moved to the right, fluid will flow via the port 47 and a pipe 64 to the motor 25 and tension in the belt is increased. Belt tension is reduced if the slip falls below the normal value. If the tension in the belt rises to such a degree as to cause the valve 39 to open, the intermediate member 45 moves to the right and fluid passes via the port 60 to the motor 25 to reduce the belt tension. Opening the valve 39 also opens a switch 49 and the driving motor is switched off. The valve 39 then closes and the member 45 returns to its normal position, fluid in the space 44 being allowed to leak away through an orifice 68. A warning signal may be interconnected with the valve 39 or the switch 49 and the switching arrangement is such that when the valve returns to normal position the drive is not automatically restored and manual intervention is necessary in order to restart the driving roller 17.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2657460A GB944100A (en) | 1960-07-29 | 1960-07-29 | Control of endless conveyor belts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2657460A GB944100A (en) | 1960-07-29 | 1960-07-29 | Control of endless conveyor belts |
Publications (1)
Publication Number | Publication Date |
---|---|
GB944100A true GB944100A (en) | 1963-12-11 |
Family
ID=10245781
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2657460A Expired GB944100A (en) | 1960-07-29 | 1960-07-29 | Control of endless conveyor belts |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB944100A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2140759A (en) * | 1983-06-02 | 1984-12-05 | Zuerich Verpackungstech | Chain-tensioning device for the conveyor chains of a drag chain conveyor |
EP0358254A1 (en) * | 1988-08-09 | 1990-03-14 | Konstruktiewerken Berlikum B.V. | Conveyor floor comprising a belt conveyor device |
CN109230222A (en) * | 2017-07-10 | 2019-01-18 | 山东银鹰炊事机械有限公司 | A kind of conveyer belt intermittent delivery mechanism |
CN116177110A (en) * | 2023-01-10 | 2023-05-30 | 江苏东安特钢机械制造有限公司 | Coal conveying equipment and conveying method thereof |
-
1960
- 1960-07-29 GB GB2657460A patent/GB944100A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2140759A (en) * | 1983-06-02 | 1984-12-05 | Zuerich Verpackungstech | Chain-tensioning device for the conveyor chains of a drag chain conveyor |
EP0358254A1 (en) * | 1988-08-09 | 1990-03-14 | Konstruktiewerken Berlikum B.V. | Conveyor floor comprising a belt conveyor device |
CN109230222A (en) * | 2017-07-10 | 2019-01-18 | 山东银鹰炊事机械有限公司 | A kind of conveyer belt intermittent delivery mechanism |
CN109230222B (en) * | 2017-07-10 | 2023-09-26 | 山东银鹰炊事机械有限公司 | Intermittent conveying mechanism for conveying belt |
CN116177110A (en) * | 2023-01-10 | 2023-05-30 | 江苏东安特钢机械制造有限公司 | Coal conveying equipment and conveying method thereof |
CN116177110B (en) * | 2023-01-10 | 2023-10-20 | 江苏东安特钢机械制造有限公司 | Coal conveying equipment and conveying method thereof |
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