Shield for sumping frame of mining machine

Patent metadata

Field	Value
Publication number	US-9903202-B2
Application number	US-201514868024-A
Country	US
Kind code	B2
Filing date	Sep 28, 2015
Priority date	Sep 28, 2015
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

A mining machine includes a chassis, a boom, a cutting head, and a shield supported for movement relative to the chassis. The chassis includes a first end and a second end, and defines a longitudinal axis extending between the first end and the second end. The boom includes a first end and a second end, and the boom is supported for movement relative to the chassis. The boom translates in a first direction and is pivotable relative to the chassis between first and second positions. The cutting head is coupled to the second end of the boom and is supported for rotation relative to the boom. The cutting head is rotatable about a cutting head axis. The shield is supported for movement relative to the chassis and positioned proximate the cutting head. In some embodiments, the shield is coupled to a sumping frame supported for movement relative to the chassis.

First claim

I claim:

1. A mining machine comprising:
a chassis including a first end and a second end, the chassis defining a chassis axis extending between the first end and the second end;
a boom including a first end and a second end, the boom supported for movement relative to the chassis, the boom translating in a first direction, the boom pivotable relative to the chassis between a first position and a second position;
a cutting head coupled to the second end of the boom and supported for rotation relative to the boom, the cutting head rotatable about a cutting head axis; and
a shield supported for movement relative to the chassis and positioned proximate the cutting head, the shield including a lower end adjacent a mine floor and an upper end positioned above the chassis, the shield oriented in a vertical plane substantially perpendicular to the chassis axis,
wherein the cutting head is positioned adjacent the lower end of the shield when the boom is in the first position and the cutting head is positioned adjacent the upper end of the shield when the boom is in the second position,
wherein the shield includes a primary wall and a secondary wall moveable relative to the primary wall, and
wherein the secondary wall extends and retracts relative to the primary wall in a translational manner in a direction transverse to the chassis axis.

2. The mining machine of claim 1 , wherein the secondary wall includes a first portion and a second portion, the first portion positioned adjacent a first lateral edge of the primary wall, the second portion positioned adjacent a second lateral edge of the primary wall.

3. The mining machine of claim 1 , wherein the shield further includes a lower end proximate a mine floor and an upper end, wherein the cutting head is positioned adjacent the lower end of the shield in the first position and the cutting head is positioned adjacent the upper end of the shield in the second position.

4. The mining machine of claim 1 , wherein the shield and the boom are coupled to a sumping frame that is supported for translational movement relative to the chassis along the chassis axis.

5. The mining machine of claim 1 , wherein the cutting head further includes a first portion and at least one end portion positioned proximate an end of the first portion, wherein the at least one end portion is movable relative to the first portion along the cutting head axis.

6. The mining machine of claim 1 , wherein the pivoting movement of the boom is controlled independently of the translational movement of the boom.

7. The mining machine of claim 1 , wherein the shield includes a first lateral portion and a second lateral portion, the first lateral portion and the second lateral portion spaced apart from one another by a gap.

8. The mining machine of claim 7 , further comprising a conveyor supported for movement with the shield and aligned with the gap.

9. The mining machine of claim 7 , wherein the shield includes a lip for directing cut material away from a mine floor, the shield adjacent the gap being angled to direct the cut material toward the gap.

10. A sumping assembly for a mining machine having a chassis defining a chassis axis, the chassis supported on a mine floor, the sumping assembly comprising:
a boom including a first end and a second end, the boom configured to be supported for movement relative to the chassis, the boom translating in a first direction and a second direction opposite the first direction;
a cutting head coupled to the second end of the boom and supported for rotation relative to the boom, the cutting head rotating about a cutting head axis; and
a shield coupled to the boom and positioned proximate the cutting head, the shield oriented substantially perpendicular to the first direction, the shield including a first lateral portion, a second lateral portion, and a gap between the first lateral portion and the second lateral portion, the first lateral portion and the second lateral portion each include a lower end adjacent the mine floor and an upper end opposite the lower end,
wherein the boom is movable through the gap,
wherein the shield includes a primary wall and a secondary wall moveable relative to the primary wall, and
wherein the secondary wall extends and retracts relative to the primary wall in a translational manner in a direction transverse to the chassis axis.

11. The sumping assembly of claim 10 , further comprising a conveyor for moving cut material, the conveyor aligned with the gap.

12. The sumping assembly of claim 11 , wherein the conveyor translates together with the shield in the first direction.

13. The sumping assembly of claim 11 , wherein the shield includes a lip for directing cut material from the mine floor toward the conveyor.

14. The sumping assembly of claim 10 , wherein the secondary wall includes a first portion and a second portion, the first portion positioned adjacent a first lateral edge of the primary wall, the second portion positioned adjacent a second lateral edge of the primary wall.

15. The sumping assembly of claim 10 , wherein the cutting head includes an intermediate portion and at least one end portion coupled to an end of the intermediate portion, wherein the at least one end portion is movable relative to the intermediate portion along the cutting head axis.

16. The sumping assembly of claim 10 , wherein the boom is pivotable in a third direction, the pivoting movement of the boom is controlled independently of the translational movement of the boom.

17. The sumping assembly of claim 10 , wherein the shield and the boom are coupled to a sumping frame that is supported for translational movement relative to the chassis along the chassis axis.

18. A mining machine comprising:
a chassis including a first end and a second end, the chassis defining a chassis axis extending between the first end and the second end;
a sumping frame supported for movement relative to the chassis;
a boom including a first end and a second end, the first end pivotably coupled to the sumping frame;
a conveyor coupled to the sumping frame, the conveyor including flights travelling along a pan to move cut material toward the second end of the chassis;
a cutting head coupled to the second end of the boom and supported for rotation relative to the boom, the cutting head rotatable about a cutting head axis; and
a shield coupled to the sumping frame and positioned proximate the cutting head, the shield including a lower end and an upper end, the shield oriented in a vertical plane substantially perpendicular to the chassis axis,
wherein the cutting head is positioned adjacent the lower end of the shield when the boom is in the first position and the cutting head is positioned adjacent the upper end of the shield when the boom is in the second position,
wherein the shield includes a primary wall and a secondary wall moveable relative to the primary wall, and
wherein the secondary wall extends and retracts relative to the primary wall in a translational manner in a direction transverse to the chassis axis.

19. The mining machine of claim 18 , wherein the cutting head further includes a first portion and at least one end portion movable relative to the first portion along the cutting head axis.

20. The mining machine of claim 18 , wherein the shield includes a first lateral portion and a second lateral portion, the first lateral portion and the second lateral portion spaced apart from one another by a gap, wherein the conveyor is aligned with the gap.

Assignees

• Joy Mm Delaware Inc

Inventors

• Willison John

Classifications

• E21C35/20

  General features of equipment for removal of chippings, e.g. for loading on conveyor · CPC title

• E21C35/04 Primary

  Safety devices (operating in the event of breakage of a haulage cable or chain E21C29/20) · CPC title

• E21C35/22

  Equipment for preventing the formation of, or for removal of, dust (picks with arrangement of fluid-spraying nozzles E21C35/187; {removing dust while drilling E21B21/011}) · CPC title

• E21C27/24 Primary

  by milling means acting on the full working face {, i.e. the rotary axis of the tool carrier being substantially parallel to the working face (similar machines for tunneling E21D9/1026)} · CPC title

• E21C25/06

  Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate · CPC title