GB1394382A - Dragline scraper - Google Patents

Dragline scraper

Info

Publication number
GB1394382A
GB1394382A GB2098972A GB2098972A GB1394382A GB 1394382 A GB1394382 A GB 1394382A GB 2098972 A GB2098972 A GB 2098972A GB 2098972 A GB2098972 A GB 2098972A GB 1394382 A GB1394382 A GB 1394382A
Authority
GB
United Kingdom
Prior art keywords
motor
winch
relay
scraper
stop
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
Application number
GB2098972A
Inventor
Ing Karl Haegele Dipl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZYKLOS METALLBAU KG
Original Assignee
ZYKLOS METALLBAU KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZYKLOS METALLBAU KG filed Critical ZYKLOS METALLBAU KG
Publication of GB1394382A publication Critical patent/GB1394382A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
    • E02F3/52—Cableway excavators
    • 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)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Power Engineering (AREA)
  • Control And Safety Of Cranes (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

1394382 Drag line scrapers ZYKLOS METALLBAU KG DIPL ING KARL HAEGELE 5 May 1972 [7 May 1971] 20989/72 Heading B8E [Also in Division E1] In a drag line scraper having a motor driving a main winch 6 acting on a drag line cable 20 of a scraper bucket 24 and a motor driving a second winch 29 acting on a return cable 28 of the bucket there is associated with one of the motors a relay which is actuated directly or indirectly by the current of the motor so that when the current rises above a certain value the relay operates to cause a switching action on one or both motors. Preferably the relay may either be associated with the motor of the main winch to control the motor of the second winch or vice versa. The motor of the return winch may, at the end of a scraping run of the scraper, run at low speed before it is caused to run at a higher speed on delayed actuation of the relay which in this case is associated with the second motor to control switching of the main motor. This speed switching of the second motor occurs when a stop 30 on the bucket engages a stop 27 on a guide roller of a bridge-supported cable trolley 27 for the return rope. The stop on the trolley involves a yoke pivoted on the cradle and resilient, rubber bushes positioned between the yoke and the cradle. Specification 1,394,381 is referred to.
GB2098972A 1971-05-07 1972-05-05 Dragline scraper Expired GB1394382A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2122629A DE2122629C3 (en) 1971-05-07 1971-05-07 Scraper with a winch motor

Publications (1)

Publication Number Publication Date
GB1394382A true GB1394382A (en) 1975-05-14

Family

ID=5807174

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2098972A Expired GB1394382A (en) 1971-05-07 1972-05-05 Dragline scraper

Country Status (5)

Country Link
DE (1) DE2122629C3 (en)
ES (1) ES402389A1 (en)
FR (1) FR2137570B1 (en)
GB (1) GB1394382A (en)
IT (1) IT955288B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29620129U1 (en) * 1996-11-19 1997-01-16 Liebherr Mischtechnik Gmbh Scraper

Also Published As

Publication number Publication date
FR2137570A1 (en) 1972-12-29
ES402389A1 (en) 1975-04-01
DE2122629B2 (en) 1979-03-01
DE2122629C3 (en) 1979-10-18
DE2122629A1 (en) 1972-11-23
FR2137570B1 (en) 1977-08-26
IT955288B (en) 1973-09-29

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee