GB923832A - Improvements in loading machines used in coal mines, quarries and other works - Google Patents

Improvements in loading machines used in coal mines, quarries and other works

Info

Publication number
GB923832A
GB923832A GB1764959A GB1764959A GB923832A GB 923832 A GB923832 A GB 923832A GB 1764959 A GB1764959 A GB 1764959A GB 1764959 A GB1764959 A GB 1764959A GB 923832 A GB923832 A GB 923832A
Authority
GB
United Kingdom
Prior art keywords
section
jib
ram
control unit
hydraulic
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
GB1764959A
Inventor
George Jerrit
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.)
Mavor and Coulson Ltd
Original Assignee
Mavor and Coulson Ltd
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 Mavor and Coulson Ltd filed Critical Mavor and Coulson Ltd
Priority to GB1764959A priority Critical patent/GB923832A/en
Priority to BE593184A priority patent/BE593184A/en
Publication of GB923832A publication Critical patent/GB923832A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
    • E21D9/126—Loading devices or installations
    • 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)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Ship Loading And Unloading (AREA)
  • Drives For Endless Conveyors (AREA)

Abstract

923,832. Loading machines; endless conveyers. MAVOR & COULSON Ltd. June 29, 1960 [May 23, 1959], No. 17649/59. Class 78 (1). In a loading machine in which a conveyance passage with an endless scraper chain is provided on top of the vehicle frame and in which the frame comprises a rearwardly extending slewable jib pivoted to the main body, an hydraulically actuated conveyer chain tensioning assembly is provided which is operated by the jib whenever the jib is slewed to one or other side of a central neutral position to maintain a substantially constant tension in the chain. As shown, Fig. 2, the main body of the vehicle frame comprises a section 8 which is luffable about an axis 10 on a body section 9 by hydraulic rams 35, and on which a jib section 7 is slewably mounted about an axis 11. A conveyer chain idler pulley 15 is mounted on a frame 16 which is movable lengthwise of the jib section under of a single-acting hydraulic ram 20 fixed to the jib section 7. The jib section is slewed by a pair of hydraulic rams 22, 23 pivoted to the jib section at 27 and to the section 8, and a control unit 50 is pivoted at 57 to the section 8 and at 58 to the jib section. The control unit comprises cylinders 51, 52, Fig. 3, secured together, and pistons 53, 54, and is connected to the hydraulic circuit of the ram 20 in such a way that as the jib section is slewed from the central position, the control unit is extended or retracted, thereby causing the piston 54 or 53, respectively, to displace fluid to the ram 20 to maintain the chain tension at the appropriate value. The rams 22, 23 and 35 are connected to the main hydraulic system, Fig. 3, which includes a continuously running pump 32 and a manually operable valve assembly 31, and the ram 20 and control unit 50 are connected to an auxiliary hydraulic system which is connected to the main system through a non-return valve 44, spring-loaded units 64 being provided in the auxiliary system to compensate for shock loads applied to the ram 20 through the pulley 15.
GB1764959A 1959-05-23 1959-05-23 Improvements in loading machines used in coal mines, quarries and other works Expired GB923832A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1764959A GB923832A (en) 1959-05-23 1959-05-23 Improvements in loading machines used in coal mines, quarries and other works
BE593184A BE593184A (en) 1959-05-23 1960-07-20 Loaders intended for coal mines, quarries and other sites.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1764959A GB923832A (en) 1959-05-23 1959-05-23 Improvements in loading machines used in coal mines, quarries and other works

Publications (1)

Publication Number Publication Date
GB923832A true GB923832A (en) 1963-04-18

Family

ID=10098857

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1764959A Expired GB923832A (en) 1959-05-23 1959-05-23 Improvements in loading machines used in coal mines, quarries and other works

Country Status (2)

Country Link
BE (1) BE593184A (en)
GB (1) GB923832A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103224118A (en) * 2013-04-15 2013-07-31 新汶矿业集团有限责任公司 Automatic tensioning system of belt conveyor and applications thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103224118A (en) * 2013-04-15 2013-07-31 新汶矿业集团有限责任公司 Automatic tensioning system of belt conveyor and applications thereof
CN103224118B (en) * 2013-04-15 2016-01-27 新汶矿业集团有限责任公司 Belt conveyer auto-tensioning system and uses thereof

Also Published As

Publication number Publication date
BE593184A (en) 1961-01-19

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