GB1081684A - Improvements in or relating to mining machines - Google Patents
Improvements in or relating to mining machinesInfo
- Publication number
- GB1081684A GB1081684A GB43945/64A GB4394564A GB1081684A GB 1081684 A GB1081684 A GB 1081684A GB 43945/64 A GB43945/64 A GB 43945/64A GB 4394564 A GB4394564 A GB 4394564A GB 1081684 A GB1081684 A GB 1081684A
- Authority
- GB
- United Kingdom
- Prior art keywords
- limits
- relating
- mining machines
- temperature
- machine
- 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
- 238000005065 mining Methods 0.000 title abstract 2
- 238000004804 winding Methods 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C29/00—Propulsion of machines for slitting or completely freeing the mineral from the seam
- E21C29/04—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains
- E21C29/14—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains by haulage cable or chain pulling the machine along the working face
- E21C29/16—Winches or other means for pulling cable or chain
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
- H02H7/0852—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load directly responsive to abnormal temperature by using a temperature sensor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/40—Regulating or controlling the amount of current drawn or delivered by the motor for controlling the mechanical load
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Control Of Velocity Or Acceleration (AREA)
- Protection Of Generators And Motors (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
1, 081, 684. Automatic control systems. GEBR. EICKHOFF MASCHINENFABRIK U. EISENGIESSEREI m.b.H. Oct. 28, 1964 [Dec. 6, 1963], No. 43945/64. Heading G3R. In a system wherein the load on the cutter motor of a mining machine is kept between upper and lower limits by control of the rate of advancement of the machine, the limits are automatically adjusted according to the temperature of the motor windings. The limits are set by a potentiometer circuit which includes either a resistor having a negative temperature coefficient or a series of temperature sensitive switches.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEE25972A DE1209527B (en) | 1963-12-06 | 1963-12-06 | Method and device for controlling shaving machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1081684A true GB1081684A (en) | 1967-08-31 |
Family
ID=7071920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB43945/64A Expired GB1081684A (en) | 1963-12-06 | 1964-10-28 | Improvements in or relating to mining machines |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1209527B (en) |
GB (1) | GB1081684A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0468806A2 (en) * | 1990-07-27 | 1992-01-29 | Raymond Corporation | Temperature control system for motors and power components of a material handling vehicle |
-
1963
- 1963-12-06 DE DEE25972A patent/DE1209527B/en active Pending
-
1964
- 1964-10-28 GB GB43945/64A patent/GB1081684A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0468806A2 (en) * | 1990-07-27 | 1992-01-29 | Raymond Corporation | Temperature control system for motors and power components of a material handling vehicle |
EP0468806A3 (en) * | 1990-07-27 | 1992-12-16 | Raymond Corporation | Temperature control system for motors and power components of a material handling vehicle |
Also Published As
Publication number | Publication date |
---|---|
DE1209527B (en) | 1966-01-27 |
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