1. A manipulator for gripping an object in a drilling or bolting module, comprising:
an arm extending in a radial direction relative to a pivot point about which the arm is pivotally mounted for movement along a generally arcuate path, the arm carrying a pair of generally opposed jaws pivotally mounted for moving between a first, closed position for gripping the object placed in closed proximity to an end face of the arm and a second, open position for passing the object without any interference as the arm moves through the arcuate path and without moving in the radial direction.
2. The manipulator according to claim 1, wherein the end face of the arm is generally planar and the jaws in the open position each include engagement surfaces that lie in generally the same plane as the planar face of the arm.
3. The manipulator according to claim 1, wherein each jaw includes a groove in an engagement face thereof, whereby the grooves in the closed position of the jaws form a space for receiving the object.
4. The manipulator according to claim 1, further including means for closing the jaws in a wear-compensating manner to ensure application of a proper gripping force to the object.
5. A module for use in drilling a bore hole in a face of a mine passage using a drilling element, comprising:
a manipulator for manipulating the drilling element, the manipulator being movable along an arcuate path;
a holder for holding the drilling element at a first location along the arcuate path; and
a drill head including a chuck positioned at a second location adjacent the arcuate path;
wherein the manipulator follows the arcuate path to transport the drilling element from the holder to the drill head.
6. The module according to claim 5, wherein the manipulator comprises an arm extending in a radial direction relative to a pivot point about which the arm is pivotally mounted for movement along a generally arcuate path, the arm carrying a pair of generally opposed jaws pivotally mounted for moving between a first, closed position for gripping the drilling element when placed in close proximity to an end face of the arm and a second, open position for passing the drilling element without any interference as the arm moves through the arcuate path and without moving in the radial direction.
7. The module according to claim 6, further including an actuator for closing the jaws in a wear-compensating manner to ensure application of a proper gripping force to the object.
8. The module according to claim 5, further including a mast having a carriage for supporting the drill head so as to be capable of moving in a direction transverse to a direction of elongation of the mast.
9. The module according to claim 5, further including means for moving the drill head away from the mast in the transverse direction.
10. The module of claim 5, further including a magazine for holding a plurality of roof bolts, said magazine comprising:
a frame;
first and second spaced guides supported by the frame for receiving the plurality of bolts, each guide including an infeed end and a delivery end; and
an arm pivotally mounted relative to the frame for engaging at least one bolt received in the guides, the arm being biased toward the delivery end of the guides.
11. The module of claim 5, wherein the holder is a carousel comprising:
a rotatable body carrying a first holder for holding a first drilling element having a first bit and a second holder for holding a second drilling element having a second bit, wherein the body may be rotated to present either the first drilling element or the second drilling element for insertion in the drill head for forming the borehole.
12. The module of claim 5, further including a mast for carrying the drill head and a drill guide comprising a pair of pivotally mounted arms, at least one of the arms includes a first part extending in a first plane and intersecting a first axis, a second offset part extending in a second plane generally parallel to the first plane and intersecting a second axis spaced from the first axis, and a third part connecting the first and second parts.
13. The module of claim 5, further including:
a stab jack actuated by a cylinder including a fluid under pressure to aid in fixing the position of the module relative to the mine passage;
a sensor for sensing the pressure of the fluid associated with the cylinder and generating an output signal; and
a cotroller for automatically advancing the stab jack based on a change in the output signal.
14. The module of claim 5, further including computer-implemented means for causing the drill head, upon receiving a single user input signal, to use the drilling element to form the borehole and install the bolt in the borehole once formed.
15. The module of claim 5, further including:
a first user interface including a display for displaying at least one component of the module, wherein the dislay visualizes the movement of the component during the drilling or bolting operation.
16. The module of claim 5, wherien the component of the module has a color, and the display visually represents the component in the color.
17. The module of claim 5, further including means for detecting the relative location of the face using the drill guide.
18. The module of claim 5, further including:
means for detecting contact between the first drilling element and the face; and
means for initiating a collaring routine if an output from the detecting means indicates a lack of solid contact.
19. A method of drilling a borehole in a face of a mine passage using a drilling element and installing a bolt in the borehole once formed using a manipulator movable along a generally arcuate path, comprising:
moving the drilling element from a first location along the arcuate path extending in a first plane to a drilling path extending in a second plane;
drilling the borehole using the drilling element;
moving the bolt from a second location along the arucate path to the drilling path; and
installing the bolt in the borehole.
20. The method of claim 19, wherein the drilling element comprises a starter drilling element, the drilling step comprises drilling a starter borehole, and the method comprises moving a finishing drilling element along the arcuate path to the drilling path and then finishing the borehole.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A semiconductor memory device comprising:
a plurality of flash memories;
a connector which is capable of connecting to a host apparatus; a cache memory for providing data transmission to the flash memories;
a controller that performs control of the data transmission to the flash memories;
a power supply circuit that converts an external power supply voltage into an internal power supply voltage to supply the internal power supply voltage to the flash memories; and
a fuse that protects at least the flash memories from an overcurrent, wherein the cache memory, the controller and the fuse are mounted on a substrate.
2. The semiconductor memory device according to claim 1, wherein the power supply circuit, the fuse, and the controller are gathered in an certain area and provided near the connector, and the flash memories are provided to surround at least two directions of the area.
3. The semiconductor memory device according to claim 1, wherein the fuse cuts off a current when a current that is double a rated current plus a certain margin value flows.
4. The semiconductor memory device according to claim 1, wherein the fuse is a power fuse or a self-recovery type resettable fuse.
5. The semiconductor memory device according to claim 1, wherein the flash memory is a NAND type memory.
6. The semiconductor memory device according to claim 1, wherein the fuse is provided on an input side of the power supply circuit.
7. The semiconductor memory device according to claim 6, wherein the power supply circuit, the fuse, and the controller are gathered in an certain area and provided near the connector, and the flash memories are provided to surround at least two directions of the area.
8. The semiconductor memory device according to claim 6, wherein the fuse cuts off a current when a current that is double a rated current plus a certain margin value flows.
9. The semiconductor memory device according to claim 6, wherein the fuse is a power fuse or a self-recovery type resettable fuse.
10. The semiconductor memory device according to claim 6, wherein the flash memory is a NAND memory.
11. The semiconductor memory device according to claim 1, wherein
the power supply circuit has a plurality of internal power supply voltage lines that output a plurality of different internal power supply voltages, and
the fuse is provided selectively to an internal power supply voltage line that supplies the internal power supply voltage to the flash memories among the internal power supply voltage lines.
12. The semiconductor memory device according to claim 11, wherein the power supply circuit, the fuse, and the controller are gathered in an certain area and provided near the connector, and the flash memories are provided to surround at least two directions of the area.
13. The semiconductor memory device according to claim 11, wherein the fuse cuts off a current when a current that is double a rated current plus a certain margin value flows.
14. The semiconductor memory device according to claim 11, wherein the fuse is a power fuse or a self-recovery type resettable fuse.
15. The semiconductor memory device according to claim 11, wherein the flash memory is a NAND type memory.
16. The semiconductor memory device according to claim 2, wherein the fuse cuts off a current when a current that is double a rated current plus a certain margin value flows.
17. The semiconductor memory device according to claim 2, wherein the fuse is a power fuse or a self-recovery type resettable fuse.
18. The semiconductor memory device according to claim 2, wherein the flash memory is a NAND type memory.
19. The semiconductor memory device according to claim 10, wherein the fuse cuts off a current when a current that is double a rated current plus a certain margin value flows.
20. The semiconductor memory device according to claim 10, wherein the fuse is a power fuse or a self-recovery type resettable fuse.