Apparatus for digging and transporting soil and sand, stones and rocks, minerals and the like

• US 4,353,796 A
• Filed: 10/10/1980
• Issued: 10/12/1982
• Est. Priority Date: 07/22/1977
• Status: Expired due to Term

• Current Assignee: Mitsubishi Mining & Cement Co. Ltd. (Mitsubishi Materials Corporation)
• Original Assignee: Mitsubishi Mining & Cement Co. Ltd. (Mitsubishi Materials Corporation)
• Inventors: Kawaguchi, Hiroshi, Kubo, Masaaki, Sibata, Masaharu, Onodera, Yasutaka
• Primary Examiner(s): Yudkoff, Norman
• Application Number:
  US06/195,954
• Time in Patent Office: 732 Days
• Field of Search: 209/247, 209/240, 209/257, 209/259, 209/420, 209/421, 209/261, 209/488, 209/490, 209/492, 299/18, 198/528, 198/535, 241/81
• US Class Current: 209/240
• CPC Class Codes: E02F 1/00 General working methods with dredgers or soil-shifting machines methods for making embankments E02D17/18; methods for mining E21C
• CPC Class Codes: E02F 3/48 Drag-lines
• CPC Class Codes: E02F 5/26 Combined conveying-bridges and dredgers
• CPC Class Codes: E21C 47/00 Machines for obtaining or the removal of materials in open-pit mines obtaining peat E21C49/00

Abstract

In digging and hauling soil, rocks, minerals and the like by the use of a dragline the invention provides a novel combination of said dragline, a conveyor means for hauling the materials dug, and a hopper means disposed over and movable along said conveyor means whereby material may be efficiently excavated and transported out of the working area.

Claims

1. Apparatus for transporting soil and sand, rocks and stones, minerals or the like dug by a dragline, said apparatus including a hopper means straddling a conveyor means for transferring the material dug, said hopper means comprising a pair of opposed side walls extending parallel to the longitudinal axis of said conveyor means, the walls defining an upper opening for receiving the material dug and sloping downwardly inwardly toward the conveyor means to form therebetween a lower discharge opening through which the dug materials are deposited onto the conveyor means;

a pair of opposed end walls extending transversely to the length of the conveyor means;

a sieve means extending across said upper opening for separating relatively large masses from said dug material;

a dug material receiving solid plate forming a part of said opposed side wall to define said upper opening for receiving the material dug, said solid plate being associated with said sieve means and adapted to slope down the dug material and transfer it to the sieve means;

and support means for supporting at least said side walls, said support means including fixing legs provided with jack support portions for supporting jacks operable to lift said fixing legs, a wheel being rotatably mounted to each of said fixing legs, whereby when said hopper means is shifted to another location along said conveyor means said jacks are actuated to lift said fixing legs and said wheels are brought into contact with rails to ride therealong, and during the loading of said dug material into the hopper means said jacks are deenergized to lower the bottoms of said fixing legs into contact with the ground while said wheels are disengaged from the rails.

2. Apparatus according to claim 1 wherein said dug material receiving solid plate is connected integrally with said sieve so as to extend coextensively with the sieve beyond said upper opening, and further including an elevator means attached to said integrally connected sieve and receiving plate for raising and lowering to change the tilt angle of the sieve and plate.

3. Apparatus according to claim 2 wherein said elevator means comprises fluid operated cylinder means attached to the solid plate of said sieve means.

4. Apparatus according to claim 2 wherein said elevator means comprises a hoist, a post, a sheave mounted to said post, a hoist rope extending from said hoist, passing around said sheave and connected to the end of said sieve means.

5. Apparatus according to claim 1 wherein said dug material receiving solid plate is provided separately from said sieve and located above the seive and inclined such that the dug material as deposited on the solid plate will slide down the plate and fall onto said sieve.

6. Apparatus according to claim 1, further including a second conveyor means positioned movably in association with said hopper means and arranged to receive and transport those large masses of the dug material separated by said sieve means, a crusher means positioned movably in association with said hopper means and arranged to receive the large masses from the second conveyor means and break them to fragments, and a third conveyor means positioned movably in association with said hopper means and arranged to carry said broken fragments from the crusher means back to said first conveyor means.