US20130014996A1 - Braking device for an auger - Google Patents
Braking device for an auger Download PDFInfo
- Publication number
- US20130014996A1 US20130014996A1 US13/182,329 US201113182329A US2013014996A1 US 20130014996 A1 US20130014996 A1 US 20130014996A1 US 201113182329 A US201113182329 A US 201113182329A US 2013014996 A1 US2013014996 A1 US 2013014996A1
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- US
- United States
- Prior art keywords
- auger
- drive shaft
- actuator
- elongate
- braking device
- 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.)
- Abandoned
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 59
- 230000004913 activation Effects 0.000 claims abstract description 18
- 230000002829 reductive effect Effects 0.000 claims abstract description 4
- 238000005553 drilling Methods 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 230000009849 deactivation Effects 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 5
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 230000002441 reversible effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/003—Drilling with mechanical conveying means
- E21B7/005—Drilling with mechanical conveying means with helical conveying means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B11/00—Other drilling tools
- E21B11/005—Hand operated drilling tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
- E21B7/027—Drills for drilling shallow holes, e.g. for taking soil samples or for drilling postholes
Definitions
- the present disclosure relates to augers for drilling holes, and in particular to braking apparatus and methods for a powered auger.
- Augers are used to drill holes, such as holes in the earth for setting posts.
- a typical auger has one or more boring blades at the lower end of an upright drive shank and a spiral auger blade (or flighting) extending from the boring blades up a lower portion of the drive shank.
- the drive shank is rotated to turn the blades to bore into the earth.
- Some augers are powered, such that the drive shank is rotated by an electric motor or fuel-powered engine.
- the motor/engine (or power unit) is coupled to a transmission, which transfers power from the engine to rotate the blades of the auger.
- the motor/engine and transmission form a powerhead.
- a drive shank of the auger may be coupled to a drive shaft of the transmission.
- a clutch of the transmission such as a spring or centrifugal clutch, may provide a releasable coupling between the motor/engine and the drive shaft.
- a clutch drum of the clutch may be coupled to the drive shaft and a spring-loaded rotating disk of the clutch may be coupled to the motor/engine.
- Increasing rotation of the rotating disk such as when the rotations per minute (RPMs) of the motor/engine increase, may cause the rotating disk to engage the clutch drum and turn the drive shaft, which rotates the auger bit and/or blade.
- RPMs rotations per minute
- the releasable coupling of the motor/engine and the drive shaft by the clutch typically allows the drive shaft (and the drive shank and/or auger bit) to rotate independently from the motor/engine in both the clockwise and counterclockwise direction.
- powered augers are not equipped to reverse direction.
- the transmission does not include a reverse gear or setting. Rotation of the drive shaft independent from the motor/engine can be problematic in instances when the auger blade becomes buried by debris in the hole that is being drilled by the auger.
- the present disclosure is directed to embodiments of methods and apparatus for braking an auger to limit or prevent rotation of the auger independent from rotation of the motor/engine.
- augers can also be used to drill holes for a variety of purposes besides drilling holes in the earth.
- an auger can be used to drill holes in or through ice, such as for ice fishing, or other situations where a narrow hole is advantageous.
- a typical auger hole is four to eighteen inches in diameter.
- the present disclosure is directed to apparatus and methods for braking (limiting or preventing rotation of) an auger.
- the braking device when activated, may limit or prevent rotation of the flighting of the auger with respect to the motor/engine.
- FIG. 1 is a perspective view of a powered auger, according to one embodiment.
- FIG. 2 is an enlarged side view of the power head of the powered auger of FIG. 1 .
- FIG. 3 is an exploded view of a braking device for an auger, according to one embodiment.
- FIG. 4 is a partial cross-sectional view of a mount of a braking device for an auger, according to one embodiment.
- FIGS. 5A , 5 B, and 5 C are a perspective view, an exploded view, and a top view, respectively, of a transmission assembly of a powered auger, the transmission including a braking device for an auger, according to one embodiment.
- FIG. 1 is a perspective view of a powered auger 100 , according to one embodiment of the present disclosure.
- the auger 100 includes a bit 102 and a power head 103 .
- the power head 103 may include a power unit 104 (e.g., a motor or engine), handleds 105 , a transmission assembly 106 , and a braking device 120 .
- the bit 102 is coupled to a drive shaft 108 of the transmission assembly 106 .
- the bit 102 and drive shaft 108 are concentric and coaxial.
- the bit 102 and the drive shaft 108 share a longitudinal axis, that can be referred to as a drive axis 110 , about which rotation of various components of the auger 100 occurs and along which the drilling occurs, as will be described below.
- the auger 100 can be used for a variety of applications in which drilling narrow and deep holes is desirable.
- the bit 102 comprises a central bit shank 112 to drive one or more boring blades 114 .
- the bit shank 112 is coaxial with the drive axis 110 .
- the boring blades 114 are positioned and fixedly secured at or near a distal (lower) end of the bit shank 112 .
- a borer tip 116 may also be positioned at the distal end of the bit shank and may be configured to bore a pilot (or starter) hole to guide a direction and/or position of the bit 102 .
- a spiral auger blade 118 or flighting may be coaxially mounted around the bit shank 112 , extending in a spiral from the boring blades 114 upward along the drive axis 110 .
- the bit 102 and correspondingly the bit shank 112 , the boring blades 114 , the borer tip 116 , and the spiral auger blade 118 , are configured to rotate around the drive axis 110 when the powered auger 100 is in operation.
- the proximal (upper) end of the bit shank 112 is configured to couple concentrically to the drive shaft 108 , in alignment with the drive axis 110 .
- the boring blades 114 and auger blade 118 also rotate around the drive axis 110 .
- the boring blades 114 may gradually bore a hole in the surface in a direction distally along the drive axis 110 .
- the auger blade 118 is configured to lift shavings or debris away from the boring blades 114 , proximally along the drive axis 110 , and out of the hole being cut.
- bit shank 112 and the drive shaft 108 may be integrated and/or comprise the same component.
- bit 102 can be removed from the drive shaft 108 for easy replacement, repair, sharpening, etc.
- this is feature is optional and the blades 114 , 118 can be mounted to a single, unitary shaft extending from the transmission assembly 106 .
- a user of the powered auger 100 typically grasps handles 105 that are fixed relative to the power unit 104 and activates the power unit 104 to drill a hole.
- the user can grasp the handles 105 and use them to guide the boring blades 114 and auger blade 118 and provide a downward force down the drive axis 110 to drill the hole.
- the handles 105 are typically secured to and fixed relative to a housing of the power unit 104 and/or a housing of the transmission assembly 106 .
- the boring blades 114 and auger blade 118 may become buried in debris, potentially below the surface of, for example, the earth or the ice.
- the power unit 104 may be incapable of generating sufficient torque to rotate the boring blades 114 and auger blade 118 .
- the bit 102 may become jammed or otherwise stop boring the hole.
- Removing a jammed auger from a hole can be very difficult.
- One solution to this problem is simply reversing the direction of rotation of the auger blade 118 (a direction opposite the drilling direction), which unscrews the auger blade 118 out of the hole.
- generally powered augers do not include a reverse gear or function. Integrating a reverse gear or function into the transmission assembly 106 of a powered auger may be unduly or prohibitively expensive and/or exceed size or space constraints on the transmission assembly.
- Rotating the auger blade 118 in a direction opposite the drilling direction is also typically not possible due to the transmission assembly 106 releasably coupling the power unit 104 and the drive shaft 108 , which allows the drive shaft 108 (and in turn the bit shank 112 and/or auger blade 118 ) to rotate freely, independent of the power unit 104 , in both the clockwise and counterclockwise direction.
- a braking device 120 is provided to secure the transmission assembly 106 and/or the drive shaft 108 relative to the power unit 104 and/or the handles 105 .
- the braking device 120 may be integrated into the power unit 104 , as illustrated.
- the braking device 120 may be integrated into the power unit 104 via the engine fan housing.
- the braking device 120 may be configured to restrict or even prevent rotation of the drive shaft 108 relative to the power unit 104 . Accordingly, a user can activate the braking device 120 and then twist the handles to rotate the auger blade 118 in a direction opposite the drilling direction and thereby remove the auger from the hole.
- FIG. 2 is an enlarged side view of the power head 107 of the powered auger 100 of FIG. 1 .
- the power head 107 may include the power unit 104 , the handles 105 (shown in FIG. 1 ) and the transmission assembly 106 , as shown.
- the power unit 104 may include a fuel tank 202 or other source of energy for power generation (e.g., a battery, an electrical connection, and the like).
- the power unit 104 is positioned above the transmission assembly 106 .
- the braking device 120 of the illustrated embodiment is secured to and/or integrated with the power unit 104 . In another embodiment, the braking device 120 may be integrated with the transmission assembly 106 .
- FIG. 3 is an exploded view of a braking device 120 for a powered auger, according to one embodiment.
- the braking device 120 includes an elongate band 302 and a brake activation assembly 304 .
- the band 302 may include an elongate strip of material, such as metal.
- the band has a pair of ends 301 , 303 arranged in a loop with ends 301 , 303 positioned proximate to one another.
- a first end 301 may be configured as a fixed end and a second end 303 may be configured as a free end.
- the fixed end 301 may be configured to engage a housing of the transmission assembly 106 ( FIGS.
- the band 302 when in an activated configuration, may be configured to engage a component of the transmission assembly 106 of a powered auger.
- the band 302 may be configured to engage a clutch drum, as will be explained more fully below.
- activation of the band 302 may include tightening of the band to reduce a diameter of the loop of the band 302 .
- the band 302 is configured in a circular or loop arrangement having a diameter D that is larger than a clutch drum of the transmission assembly, as shown in FIGS. 5A-5C and described below with reference to the same.
- the diameter D is reduced, the band 302 engages the clutch drum, thereby securing the clutch drum (and in turn the drive shaft 108 and bit 102 ) with respect to the housing of the transmission assembly 106 and the power head 107 .
- the diameter D is increased the band transitions to a deactivated configuration and the clutch drum is released.
- the brake activation assembly 304 may include a shaft 306 , a connector 308 , a biasing element 312 , a mount 314 , mounting hardware 316 , 318 , and an actuator 320 .
- the shaft 306 may have an elongate cylindrical shape having a distal end 330 and a proximal end 332 .
- the connector 308 may be positioned at the distal end 330 of the shaft 306 and configured to secure the free end 303 of the band 302 to the shaft 306 .
- the free end 303 of the band 302 may include and opening 309 or hole configure to receive a pin 310 of the connector 308 .
- the free end 303 of the band 302 is received into a slot 307 of the connector 308 and the pin 310 passes through a hole in the connector on a first side of the slot 307 , through the opening 309 of the free end 303 of the band 302 , and through a hole in the connector on a second side of the slot 307 .
- the pin 310 secures the free end 303 of the band 302 to the shaft 306 . Accordingly, adjustment of the position of the shaft 306 relative to the fixed end 301 of the band 302 increases or decreases the diameter D of the band 302 .
- the proximal end 332 of the shaft 306 is configured to couple to actuator 320 .
- the shaft 306 extends into and/or through an opening 324 in the mount 314 to couple to the actuator 320 .
- the actuator 320 in turn is threaded. Accordingly, activation of the actuator 320 can move the position of the shaft 306 relative to the fixed end 301 of the band 302 , thereby increasing or decreasing the diameter D of the band 302 .
- the proximal end 332 of the shaft 306 is threaded and the actuator 320 is threaded with mating threads, such that rotation of the actuator 320 about a longitudinal axis of the shaft 306 results in linear (longitudinal) displacement of the shaft 306 relative to the actuator 320 .
- the actuator 320 may define a threaded opening 334 at a distal end to receive mating threads 340 at the proximal end 332 of the shaft 306 .
- Rotation of the actuator 320 screws the shaft 306 into the actuator 320 and displaces the shaft 306 linearly in the direction of the actuator 320 .
- Displacement of the shaft 306 in the direction of the actuator 320 decreases the diameter D of the band 302 , thereby transitioning toward an activated configuration in which the band engages a component of the transmission assembly 106 .
- the biasing element 312 is received into the threaded opening 334 and may abut against a floor (or distal end) of the threaded opening 334 and a proximal end 332 of the shaft 306 .
- the biasing element 312 may serve to bias the actuator 320 and the shaft 306 apart.
- the biasing element 312 may bias the braking device 120 toward an unengaged or deactivated configuration, in which the braking device 120 is not engaging the drive shaft 108 and rotation of the drive shaft 108 relative to the power head 104 is unrestricted. Biasing the braking device 120 toward an unengaged configuration may be particularly useful during operation when vibrations can act to engage braking device 120 , inadvertently.
- the biasing element 312 may comprise a spring.
- a spacer 322 may facilitate securement of the actuator 320 relative to the mount 314 , such that displacement of the shaft 306 relative to the actuator 320 , resulting from rotation of the actuator 320 , increases or decreases the diameter D of the band and disengages or engages the band 302 with a component of the transmission assembly 106 .
- the mount 314 may include mounting holes 317 , 319 to receive mounting hardware 316 , 318 that may secure the mount 314 relative to a housing of the transmission assembly 106 and/or power unit 104 .
- the shaft 306 may include an opening having femail threads that mate with male threads of the actuator 320 .
- actuation of the actuator 320 may be accomplished by linear movement rather than by rotation of the actuator (e.g., similar to pushing a button or pulling a knob). Any appropriate actuator mechanism may be utilized.
- FIG. 4 is a partial cross-sectional view of a mount 314 of a braking device for a powered auger, according to the present embodiment.
- FIG. 4 shows in greater detail the coupling of the proximal end 332 of the shaft 306 and the actuator 320 .
- the mount 314 may include a pair of mounting holes 317 , 319 defined in an upper portion. As described, the mounting holes 317 , 319 receive the mounting hardware 316 , 318 configured to secure the mount 314 relative to the power head 104 .
- the mounting hardware 316 includes bolts.
- a lower portion of the mount 314 defines an opening 324 in which the shaft 306 and actuator 320 are received and coupled together.
- the shaft 306 includes male threads 340 to engage mating female threads in the threaded opening 334 at the distal end of the actuator 320 .
- Rotation of the actuator 320 can move the position of the shaft 306 linearly. Linear movement of the shaft 306 in turn increases or decreases the diameter D of the band 302 .
- the biasing element 312 is positioned in the mount 314 and is configured to abut a shoulder 402 in the opening 324 through the mount 314 and configured to abut the connector 308 at the distal end of the shaft 306 .
- the biasing element 312 may serve to bias the shaft 306 away from the actuator 320 , thereby biasing the braking device 120 toward an unengaged configuration, such that rotation of the drive shaft 108 relative to the power head 104 is unrestricted by the braking device 120 .
- the biasing element 312 may bias the braking device 120 toward an engaged configuration, such that rotation of the drive shaft 108 relative to the power head 104 is restricted by the braking device 120 .
- FIG. 5A is a perspective view of a transmission assembly 106 of a powered auger, according to one embodiment.
- FIG. 5B is an exploded view of the transmission assembly 106 .
- FIG. 5C is a top view of the transmission assembly 106 .
- the transmission assembly 106 includes a braking device 120 for an auger, according to one embodiment.
- the braking device 120 may be integrated into the transmission assembly 106 .
- the braking device 120 may be configured to engage a component of the transmission assembly 106 to restrict rotational movement of the component, and thereby restrict rotational movement of the drive shaft 108 (see FIGS. 1 and 2 ), relative to the power unit 104 (see FIGS. 1 and 2 ).
- the transmission assembly 106 may include a clutch drum 502 , which is engaged by a rotating disk 504 ( FIG. 5C ) coupled to the power unit 104 .
- the rotating disk 504 may be a spring-loaded rotating disk 504 , as shown.
- the clutch drum 502 may be coupled to the drive shaft 108 and may be configured to receive the spring-loaded rotating disk 504 . As the RPMs of the rotating disk 504 increase, it expands to fill and/or engage the inside of the clutch drum 502 .
- the rotating disk 504 may be configured to engage the clutch drum 502 when the RPMs exceed a threshold and may be configured to disengage the clutch drum 502 as the RPMs decrease below the threshold.
- the clutch drum 502 As the clutch drum 502 is engaged by the rotating disk, the clutch drum 502 begins to rotate with the rotating disk. In this manner, the rotating disk 504 provides releasable coupling of the power unit 104 and the drive shaft 108 . When the rotating disk 504 slows and is disengaged from the clutch drum 502 , the clutch drum 502 is free to rotate independent of the rotating disk 504 and the power unit 104 .
- the braking device 120 of the present embodiment when activated, engages the clutch drum 502 to restrict rotational movement of the clutch drum 502 relative to the housing of the transmission assembly 106 and/or the power head 107 .
- the mount 314 of the braking device 120 may be secured to a shroud 506 of the housing of the power unit 104 , as shown.
- the mount may be secured to a component of the housing of the transmission assembly 106 .
- the housing of the transmission assembly 106 is secured to and/or fixed relative to the power unit 104 .
- securement relative to the transmission assembly 106 results in securement relative to the power head 104 .
- the handles 105 see FIG.
- the braking device 120 includes a band 302 and a brake activation assembly 304 .
- the band 302 may include an elongate strip of material, such as metal, with a pair of ends and arranged in a loop around the clutch drum 502 .
- a first end 301 may be configured as a fixed end and a second end 303 may be configured as a free end.
- the loop of the band 302 reduces in diameter, thereby engaging the clutch drum 502 .
- the free end 303 moves linearly toward the actuator, while the fixed end does not move, thereby shortening the loop of the band 302 and causing the band 302 to engage the clutch drum 502 .
- the brake activation assembly 304 may include a shaft 306 (see FIGS. 2 and 4 ) disposed in/through a mount 314 , a connector 308 , a biasing element 312 , mounting hardware 316 , 318 , and an actuator 320 . Adjustment of the position of the shaft 306 causes adjustment of the position of the free end 303 relative to the fixed end 301 of the band 302 , thereby increasing or decreasing the diameter of the loop of the band 302 . In the illustrated embodiment, the shaft 306 is displaced linearly along its longitudinal axis by the actuator 320 .
- the braking device 120 may include a pin or fork to engage the clutch drum.
- the pin or fork may be utilized in place of the band.
- the pin or fork may be coupled to a brake activation assembly, which may be activated by a user to laterally displace the pin or the fork relative to the clutch drum. Lateral displacement of the pin or fork may result in the pin or fork engaging one or more holes in the clutch drum to restrict or prevent rotation of the clutch drum relative to the power unit.
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Abstract
Description
- The present disclosure relates to augers for drilling holes, and in particular to braking apparatus and methods for a powered auger.
- Augers are used to drill holes, such as holes in the earth for setting posts. A typical auger has one or more boring blades at the lower end of an upright drive shank and a spiral auger blade (or flighting) extending from the boring blades up a lower portion of the drive shank. The drive shank is rotated to turn the blades to bore into the earth. Some augers are powered, such that the drive shank is rotated by an electric motor or fuel-powered engine.
- In a powered auger, the motor/engine (or power unit) is coupled to a transmission, which transfers power from the engine to rotate the blades of the auger. The motor/engine and transmission form a powerhead. A drive shank of the auger may be coupled to a drive shaft of the transmission. A clutch of the transmission, such as a spring or centrifugal clutch, may provide a releasable coupling between the motor/engine and the drive shaft. For example, a clutch drum of the clutch may be coupled to the drive shaft and a spring-loaded rotating disk of the clutch may be coupled to the motor/engine. Increasing rotation of the rotating disk, such as when the rotations per minute (RPMs) of the motor/engine increase, may cause the rotating disk to engage the clutch drum and turn the drive shaft, which rotates the auger bit and/or blade.
- The releasable coupling of the motor/engine and the drive shaft by the clutch typically allows the drive shaft (and the drive shank and/or auger bit) to rotate independently from the motor/engine in both the clockwise and counterclockwise direction. Also, typically, powered augers are not equipped to reverse direction. For example, the transmission does not include a reverse gear or setting. Rotation of the drive shaft independent from the motor/engine can be problematic in instances when the auger blade becomes buried by debris in the hole that is being drilled by the auger.
- The present disclosure is directed to embodiments of methods and apparatus for braking an auger to limit or prevent rotation of the auger independent from rotation of the motor/engine.
- As can be appreciated augers can also be used to drill holes for a variety of purposes besides drilling holes in the earth. For example, an auger can be used to drill holes in or through ice, such as for ice fishing, or other situations where a narrow hole is advantageous. A typical auger hole is four to eighteen inches in diameter.
- The present disclosure is directed to apparatus and methods for braking (limiting or preventing rotation of) an auger. The braking device, when activated, may limit or prevent rotation of the flighting of the auger with respect to the motor/engine.
- Additional aspects and advantages will be apparent from the following detailed description of preferred embodiments, which proceeds with reference to the accompanying drawings.
-
FIG. 1 is a perspective view of a powered auger, according to one embodiment. -
FIG. 2 is an enlarged side view of the power head of the powered auger ofFIG. 1 . -
FIG. 3 is an exploded view of a braking device for an auger, according to one embodiment. -
FIG. 4 is a partial cross-sectional view of a mount of a braking device for an auger, according to one embodiment. -
FIGS. 5A , 5B, and 5C are a perspective view, an exploded view, and a top view, respectively, of a transmission assembly of a powered auger, the transmission including a braking device for an auger, according to one embodiment. - Embodiments of the present disclosure may be best understood by reference to the drawings, wherein like parts are designated by like numerals throughout. It will be readily understood that the components of the present disclosure, as generally described and illustrated in the drawings herein, could be arranged and designed in a wide variety of different configurations. Thus, the following more detailed description of the embodiments of the apparatus is not intended to limit the scope of the disclosure, but is merely representative of possible embodiments of the disclosure. In addition, the steps of a method do not necessarily need to be executed in any specific order, or even sequentially, nor need the steps be executed only once, unless otherwise specified. In some cases, well-known structures, materials, or operations are not shown or described in detail.
-
FIG. 1 is a perspective view of a poweredauger 100, according to one embodiment of the present disclosure. Theauger 100 includes abit 102 and a power head 103. The power head 103 may include a power unit 104 (e.g., a motor or engine), handleds 105, atransmission assembly 106, and abraking device 120. Thebit 102 is coupled to adrive shaft 108 of thetransmission assembly 106. Thebit 102 anddrive shaft 108 are concentric and coaxial. Thebit 102 and thedrive shaft 108 share a longitudinal axis, that can be referred to as adrive axis 110, about which rotation of various components of theauger 100 occurs and along which the drilling occurs, as will be described below. Theauger 100 can be used for a variety of applications in which drilling narrow and deep holes is desirable. - The
bit 102 comprises acentral bit shank 112 to drive one or moreboring blades 114. Thebit shank 112 is coaxial with thedrive axis 110. Theboring blades 114 are positioned and fixedly secured at or near a distal (lower) end of thebit shank 112. Aborer tip 116 may also be positioned at the distal end of the bit shank and may be configured to bore a pilot (or starter) hole to guide a direction and/or position of thebit 102. Aspiral auger blade 118 or flighting may be coaxially mounted around thebit shank 112, extending in a spiral from theboring blades 114 upward along thedrive axis 110. - The
bit 102, and correspondingly thebit shank 112, theboring blades 114, theborer tip 116, and thespiral auger blade 118, are configured to rotate around thedrive axis 110 when the poweredauger 100 is in operation. The proximal (upper) end of thebit shank 112 is configured to couple concentrically to thedrive shaft 108, in alignment with thedrive axis 110. As thebit shank 112 is rotated about thedrive axis 110, theboring blades 114 andauger blade 118 also rotate around thedrive axis 110. If theboring blades 114 are pressed against a surface (e.g., the ground, ice, etc.) and rotated in the drilling direction, theboring blades 114 may gradually bore a hole in the surface in a direction distally along thedrive axis 110. Theauger blade 118 is configured to lift shavings or debris away from theboring blades 114, proximally along thedrive axis 110, and out of the hole being cut. - In another embodiment, the
bit shank 112 and thedrive shaft 108 may be integrated and/or comprise the same component. In the present embodiment, thebit 102 can be removed from thedrive shaft 108 for easy replacement, repair, sharpening, etc. However, this is feature is optional and theblades transmission assembly 106. - A user of the powered
auger 100 typically graspshandles 105 that are fixed relative to thepower unit 104 and activates thepower unit 104 to drill a hole. The user can grasp thehandles 105 and use them to guide theboring blades 114 andauger blade 118 and provide a downward force down thedrive axis 110 to drill the hole. Thehandles 105 are typically secured to and fixed relative to a housing of thepower unit 104 and/or a housing of thetransmission assembly 106. - In some circumstances during drilling, the
boring blades 114 andauger blade 118 may become buried in debris, potentially below the surface of, for example, the earth or the ice. When theauger blade 118 becomes buried, thepower unit 104 may be incapable of generating sufficient torque to rotate theboring blades 114 andauger blade 118. Thebit 102 may become jammed or otherwise stop boring the hole. - Removing a jammed auger from a hole can be very difficult. One solution to this problem is simply reversing the direction of rotation of the auger blade 118 (a direction opposite the drilling direction), which unscrews the
auger blade 118 out of the hole. However, generally powered augers do not include a reverse gear or function. Integrating a reverse gear or function into thetransmission assembly 106 of a powered auger may be unduly or prohibitively expensive and/or exceed size or space constraints on the transmission assembly. Rotating theauger blade 118 in a direction opposite the drilling direction is also typically not possible due to thetransmission assembly 106 releasably coupling thepower unit 104 and thedrive shaft 108, which allows the drive shaft 108 (and in turn thebit shank 112 and/or auger blade 118) to rotate freely, independent of thepower unit 104, in both the clockwise and counterclockwise direction. - In the embodiments of the present disclosure, a
braking device 120 is provided to secure thetransmission assembly 106 and/or thedrive shaft 108 relative to thepower unit 104 and/or thehandles 105. Thebraking device 120 may be integrated into thepower unit 104, as illustrated. In the present embodiment, thebraking device 120 may be integrated into thepower unit 104 via the engine fan housing. Thebraking device 120 may be configured to restrict or even prevent rotation of thedrive shaft 108 relative to thepower unit 104. Accordingly, a user can activate thebraking device 120 and then twist the handles to rotate theauger blade 118 in a direction opposite the drilling direction and thereby remove the auger from the hole. -
FIG. 2 is an enlarged side view of thepower head 107 of thepowered auger 100 ofFIG. 1 . Thepower head 107 may include thepower unit 104, the handles 105 (shown inFIG. 1 ) and thetransmission assembly 106, as shown. Thepower unit 104 may include afuel tank 202 or other source of energy for power generation (e.g., a battery, an electrical connection, and the like). Thepower unit 104 is positioned above thetransmission assembly 106. Thebraking device 120 of the illustrated embodiment is secured to and/or integrated with thepower unit 104. In another embodiment, thebraking device 120 may be integrated with thetransmission assembly 106. -
FIG. 3 is an exploded view of abraking device 120 for a powered auger, according to one embodiment. Thebraking device 120 includes anelongate band 302 and abrake activation assembly 304. Theband 302 may include an elongate strip of material, such as metal. The band has a pair ofends ends first end 301 may be configured as a fixed end and asecond end 303 may be configured as a free end. Thefixed end 301 may be configured to engage a housing of the transmission assembly 106 (FIGS. 1 and 2 ) or other fixed component, while thefree end 303 may be configured to be displaceable relative to thefixed end 301. Theband 302, when in an activated configuration, may be configured to engage a component of thetransmission assembly 106 of a powered auger. For example, theband 302 may be configured to engage a clutch drum, as will be explained more fully below. - In the present embodiment, activation of the
band 302 may include tightening of the band to reduce a diameter of the loop of theband 302. Theband 302 is configured in a circular or loop arrangement having a diameter D that is larger than a clutch drum of the transmission assembly, as shown inFIGS. 5A-5C and described below with reference to the same. When the diameter D is reduced, theband 302 engages the clutch drum, thereby securing the clutch drum (and in turn thedrive shaft 108 and bit 102) with respect to the housing of thetransmission assembly 106 and thepower head 107. When the diameter D is increased the band transitions to a deactivated configuration and the clutch drum is released. - The
brake activation assembly 304 may include ashaft 306, aconnector 308, a biasingelement 312, amount 314, mountinghardware actuator 320. Theshaft 306 may have an elongate cylindrical shape having adistal end 330 and aproximal end 332. Theconnector 308 may be positioned at thedistal end 330 of theshaft 306 and configured to secure thefree end 303 of theband 302 to theshaft 306. Thefree end 303 of theband 302 may include andopening 309 or hole configure to receive apin 310 of theconnector 308. In the illustrated embodiment, thefree end 303 of theband 302 is received into a slot 307 of theconnector 308 and thepin 310 passes through a hole in the connector on a first side of the slot 307, through theopening 309 of thefree end 303 of theband 302, and through a hole in the connector on a second side of the slot 307. In this manner, thepin 310 secures thefree end 303 of theband 302 to theshaft 306. Accordingly, adjustment of the position of theshaft 306 relative to thefixed end 301 of theband 302 increases or decreases the diameter D of theband 302. - The
proximal end 332 of theshaft 306 is configured to couple toactuator 320. Theshaft 306 extends into and/or through anopening 324 in themount 314 to couple to theactuator 320. Theactuator 320 in turn is threaded. Accordingly, activation of theactuator 320 can move the position of theshaft 306 relative to thefixed end 301 of theband 302, thereby increasing or decreasing the diameter D of theband 302. In the illustrated embodiment, theproximal end 332 of theshaft 306 is threaded and theactuator 320 is threaded with mating threads, such that rotation of theactuator 320 about a longitudinal axis of theshaft 306 results in linear (longitudinal) displacement of theshaft 306 relative to theactuator 320. More specifically, in the illustrated embodiment, theactuator 320 may define a threadedopening 334 at a distal end to receivemating threads 340 at theproximal end 332 of theshaft 306. Rotation of the actuator 320 screws theshaft 306 into theactuator 320 and displaces theshaft 306 linearly in the direction of theactuator 320. Displacement of theshaft 306 in the direction of theactuator 320 decreases the diameter D of theband 302, thereby transitioning toward an activated configuration in which the band engages a component of thetransmission assembly 106. - The biasing
element 312 is received into the threadedopening 334 and may abut against a floor (or distal end) of the threadedopening 334 and aproximal end 332 of theshaft 306. The biasingelement 312 may serve to bias theactuator 320 and theshaft 306 apart. Thus, the biasingelement 312 may bias thebraking device 120 toward an unengaged or deactivated configuration, in which thebraking device 120 is not engaging thedrive shaft 108 and rotation of thedrive shaft 108 relative to thepower head 104 is unrestricted. Biasing thebraking device 120 toward an unengaged configuration may be particularly useful during operation when vibrations can act to engagebraking device 120, inadvertently. In the illustrated embodiment, the biasingelement 312 may comprise a spring. - A
spacer 322 may facilitate securement of theactuator 320 relative to themount 314, such that displacement of theshaft 306 relative to theactuator 320, resulting from rotation of theactuator 320, increases or decreases the diameter D of the band and disengages or engages theband 302 with a component of thetransmission assembly 106. Themount 314 may include mountingholes hardware mount 314 relative to a housing of thetransmission assembly 106 and/orpower unit 104. - As will be appreciated by an ordinarily skilled artisan, in other embodiments, the
shaft 306 may include an opening having femail threads that mate with male threads of theactuator 320. In still other embodiments, actuation of theactuator 320 may be accomplished by linear movement rather than by rotation of the actuator (e.g., similar to pushing a button or pulling a knob). Any appropriate actuator mechanism may be utilized. -
FIG. 4 is a partial cross-sectional view of amount 314 of a braking device for a powered auger, according to the present embodiment.FIG. 4 shows in greater detail the coupling of theproximal end 332 of theshaft 306 and theactuator 320. Themount 314 may include a pair of mountingholes holes hardware mount 314 relative to thepower head 104. In this embodiment, the mountinghardware 316 includes bolts. A lower portion of themount 314 defines anopening 324 in which theshaft 306 andactuator 320 are received and coupled together. In the illustrated embodiment, theshaft 306 includesmale threads 340 to engage mating female threads in the threadedopening 334 at the distal end of theactuator 320. - Rotation of the
actuator 320 can move the position of theshaft 306 linearly. Linear movement of theshaft 306 in turn increases or decreases the diameter D of theband 302. The biasingelement 312 is positioned in themount 314 and is configured to abut ashoulder 402 in theopening 324 through themount 314 and configured to abut theconnector 308 at the distal end of theshaft 306. The biasingelement 312 may serve to bias theshaft 306 away from theactuator 320, thereby biasing thebraking device 120 toward an unengaged configuration, such that rotation of thedrive shaft 108 relative to thepower head 104 is unrestricted by thebraking device 120. In other embodiments, the biasingelement 312 may bias thebraking device 120 toward an engaged configuration, such that rotation of thedrive shaft 108 relative to thepower head 104 is restricted by thebraking device 120. -
FIG. 5A is a perspective view of atransmission assembly 106 of a powered auger, according to one embodiment.FIG. 5B is an exploded view of thetransmission assembly 106.FIG. 5C is a top view of thetransmission assembly 106. Thetransmission assembly 106 includes abraking device 120 for an auger, according to one embodiment. Thebraking device 120 may be integrated into thetransmission assembly 106. Thebraking device 120 may be configured to engage a component of thetransmission assembly 106 to restrict rotational movement of the component, and thereby restrict rotational movement of the drive shaft 108 (seeFIGS. 1 and 2 ), relative to the power unit 104 (seeFIGS. 1 and 2 ). - Referring collectively to
FIGS. 5A , 5B, and 5C, thetransmission assembly 106 may include aclutch drum 502, which is engaged by a rotating disk 504 (FIG. 5C ) coupled to thepower unit 104. Therotating disk 504 may be a spring-loadedrotating disk 504, as shown. Theclutch drum 502 may be coupled to thedrive shaft 108 and may be configured to receive the spring-loadedrotating disk 504. As the RPMs of therotating disk 504 increase, it expands to fill and/or engage the inside of theclutch drum 502. Therotating disk 504 may be configured to engage theclutch drum 502 when the RPMs exceed a threshold and may be configured to disengage theclutch drum 502 as the RPMs decrease below the threshold. As theclutch drum 502 is engaged by the rotating disk, theclutch drum 502 begins to rotate with the rotating disk. In this manner, therotating disk 504 provides releasable coupling of thepower unit 104 and thedrive shaft 108. When therotating disk 504 slows and is disengaged from theclutch drum 502, theclutch drum 502 is free to rotate independent of therotating disk 504 and thepower unit 104. - The
braking device 120 of the present embodiment, when activated, engages theclutch drum 502 to restrict rotational movement of theclutch drum 502 relative to the housing of thetransmission assembly 106 and/or thepower head 107. Themount 314 of thebraking device 120 may be secured to ashroud 506 of the housing of thepower unit 104, as shown. In another embodiment, the mount may be secured to a component of the housing of thetransmission assembly 106. In the present embodiment, the housing of thetransmission assembly 106 is secured to and/or fixed relative to thepower unit 104. Thus, securement relative to thetransmission assembly 106 results in securement relative to thepower head 104. As described above, the handles 105 (seeFIG. 1 ) are also secured relative to thepower head 104, such that, when thebraking device 120 is activated, rotation of the handles about the drive axis 110 (seeFIG. 1 ) results in rotation of theclutch drum 502, thedrive shaft 108, and the bit 102 (including the spiral auger blade 118) about thedrive axis 110. Thus, engagement of thebraking device 120 and subsequent rotation of the handles about thedrive axis 110 in a direction opposite the drilling direction can enable a user to unbury and/or unjam thespiral auger blade 118 and/orboring blades 114 of the powered auger. The user can unscrew thespiral auger blade 118 and/orboring blades 114 from the hole. - As previously described, the
braking device 120 includes aband 302 and abrake activation assembly 304. When thebraking device 120 is activated, theband 302 may include an elongate strip of material, such as metal, with a pair of ends and arranged in a loop around theclutch drum 502. Afirst end 301 may be configured as a fixed end and asecond end 303 may be configured as a free end. When thebraking device 120 is activated, the loop of theband 302 reduces in diameter, thereby engaging theclutch drum 502. In the illustrated embodiment, thefree end 303 moves linearly toward the actuator, while the fixed end does not move, thereby shortening the loop of theband 302 and causing theband 302 to engage theclutch drum 502. Engagement of theclutch drum 502 by theband 302 results in releasable securement of theclutch drum 502, which restricts and/or prevents rotational movement of the clutch drum 502 (and thedrive shaft 108 and the bit 102) with respect to thebraking device 120, the housing of thetransmission assembly 106, and thepower unit 104. - The
brake activation assembly 304 may include a shaft 306 (seeFIGS. 2 and 4 ) disposed in/through amount 314, aconnector 308, a biasingelement 312, mountinghardware actuator 320. Adjustment of the position of theshaft 306 causes adjustment of the position of thefree end 303 relative to thefixed end 301 of theband 302, thereby increasing or decreasing the diameter of the loop of theband 302. In the illustrated embodiment, theshaft 306 is displaced linearly along its longitudinal axis by theactuator 320. - In another embodiment, the
braking device 120 may include a pin or fork to engage the clutch drum. The pin or fork may be utilized in place of the band. The pin or fork may be coupled to a brake activation assembly, which may be activated by a user to laterally displace the pin or the fork relative to the clutch drum. Lateral displacement of the pin or fork may result in the pin or fork engaging one or more holes in the clutch drum to restrict or prevent rotation of the clutch drum relative to the power unit. - It will be obvious to those having skill in the art that many changes may be made to the details of the above-described embodiments without departing from the underlying principles of the invention. The scope of the present invention should, therefore, be determined only by the following claims.
Claims (20)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US13/182,329 US20130014996A1 (en) | 2011-07-13 | 2011-07-13 | Braking device for an auger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US13/182,329 US20130014996A1 (en) | 2011-07-13 | 2011-07-13 | Braking device for an auger |
Publications (1)
Publication Number | Publication Date |
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US20130014996A1 true US20130014996A1 (en) | 2013-01-17 |
Family
ID=47518283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US13/182,329 Abandoned US20130014996A1 (en) | 2011-07-13 | 2011-07-13 | Braking device for an auger |
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US (1) | US20130014996A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103835275A (en) * | 2014-03-12 | 2014-06-04 | 卓仲表 | Rapid icebreaking drilling mechanism |
CN106837169A (en) * | 2017-01-10 | 2017-06-13 | 成都佳美嘉科技有限公司 | The broken rig of building construction |
EP3379019A1 (en) * | 2017-03-24 | 2018-09-26 | TTI (Macao Commercial Offshore) Limited | Digging apparatus |
CN109339697A (en) * | 2018-11-28 | 2019-02-15 | 卢小玲 | A kind of Spiral digging machine propulsion device for promoting effect good |
CN110159201A (en) * | 2019-07-04 | 2019-08-23 | 交通运输部天津水运工程科学研究所 | A kind of drilling tool suitable for soft soil foundation Man-Hole digging |
CN110284830A (en) * | 2019-06-28 | 2019-09-27 | 中国人民解放军陆军工程大学 | Portable hydraulic transmission rotary digging device and rotary digging method |
US10689909B2 (en) * | 2017-12-21 | 2020-06-23 | Intradin (Shanghai) Machinery Co., Ltd. | Lightweight electric earth drill |
WO2022007210A1 (en) * | 2020-07-04 | 2022-01-13 | 邹城兖矿泰德工贸有限公司 | Special drill bit capable of preventing rock bursts |
US20220127910A1 (en) * | 2020-10-28 | 2022-04-28 | Globe (jiangsu) Co., Ltd. | Electric drill |
USD963704S1 (en) * | 2020-12-30 | 2022-09-13 | Dipperfox Oü | Drill bit |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1319259A (en) * | 1919-10-21 | Hole-digger | ||
US2250671A (en) * | 1940-04-30 | 1941-07-29 | Joy Mfg Co | Drilling apparatus |
US2273203A (en) * | 1940-10-01 | 1942-02-17 | Keene | Posthole digger |
US2709572A (en) * | 1952-04-11 | 1955-05-31 | Ageborn Adolf Emanuel | Ice boring machine |
US2846192A (en) * | 1955-12-06 | 1958-08-05 | Elof J Ostling | Portable ice auger |
US3572449A (en) * | 1967-11-29 | 1971-03-30 | Mason & Porter Ltd | Machines for boring holes |
US4212565A (en) * | 1978-04-17 | 1980-07-15 | The Shimizu Construction Co., Ltd. | Method and apparatus for forming a continuous row of cast-in-place piles to form a wall |
US5358062A (en) * | 1992-07-29 | 1994-10-25 | Andreas Stihl | Portable handheld drilling apparatus |
US5950738A (en) * | 1997-12-04 | 1999-09-14 | Outdoor Creations, Inc. | Inverted cone cutter attachment for ice auger |
US7140456B2 (en) * | 2003-07-04 | 2006-11-28 | Brian Maki | Easy hold power auger |
US7210543B1 (en) * | 2004-06-17 | 2007-05-01 | James B Sumner | Reversible power takeoff driven post hole digger |
-
2011
- 2011-07-13 US US13/182,329 patent/US20130014996A1/en not_active Abandoned
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1319259A (en) * | 1919-10-21 | Hole-digger | ||
US2250671A (en) * | 1940-04-30 | 1941-07-29 | Joy Mfg Co | Drilling apparatus |
US2273203A (en) * | 1940-10-01 | 1942-02-17 | Keene | Posthole digger |
US2709572A (en) * | 1952-04-11 | 1955-05-31 | Ageborn Adolf Emanuel | Ice boring machine |
US2846192A (en) * | 1955-12-06 | 1958-08-05 | Elof J Ostling | Portable ice auger |
US3572449A (en) * | 1967-11-29 | 1971-03-30 | Mason & Porter Ltd | Machines for boring holes |
US4212565A (en) * | 1978-04-17 | 1980-07-15 | The Shimizu Construction Co., Ltd. | Method and apparatus for forming a continuous row of cast-in-place piles to form a wall |
US5358062A (en) * | 1992-07-29 | 1994-10-25 | Andreas Stihl | Portable handheld drilling apparatus |
US5950738A (en) * | 1997-12-04 | 1999-09-14 | Outdoor Creations, Inc. | Inverted cone cutter attachment for ice auger |
US7140456B2 (en) * | 2003-07-04 | 2006-11-28 | Brian Maki | Easy hold power auger |
US7210543B1 (en) * | 2004-06-17 | 2007-05-01 | James B Sumner | Reversible power takeoff driven post hole digger |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103835275A (en) * | 2014-03-12 | 2014-06-04 | 卓仲表 | Rapid icebreaking drilling mechanism |
CN106837169A (en) * | 2017-01-10 | 2017-06-13 | 成都佳美嘉科技有限公司 | The broken rig of building construction |
EP3379019A1 (en) * | 2017-03-24 | 2018-09-26 | TTI (Macao Commercial Offshore) Limited | Digging apparatus |
US11047174B2 (en) * | 2017-03-24 | 2021-06-29 | Techtronic Cordless Gp | Digging apparatus |
US10689909B2 (en) * | 2017-12-21 | 2020-06-23 | Intradin (Shanghai) Machinery Co., Ltd. | Lightweight electric earth drill |
CN109339697A (en) * | 2018-11-28 | 2019-02-15 | 卢小玲 | A kind of Spiral digging machine propulsion device for promoting effect good |
CN110284830A (en) * | 2019-06-28 | 2019-09-27 | 中国人民解放军陆军工程大学 | Portable hydraulic transmission rotary digging device and rotary digging method |
CN110159201A (en) * | 2019-07-04 | 2019-08-23 | 交通运输部天津水运工程科学研究所 | A kind of drilling tool suitable for soft soil foundation Man-Hole digging |
WO2022007210A1 (en) * | 2020-07-04 | 2022-01-13 | 邹城兖矿泰德工贸有限公司 | Special drill bit capable of preventing rock bursts |
US20220127910A1 (en) * | 2020-10-28 | 2022-04-28 | Globe (jiangsu) Co., Ltd. | Electric drill |
US11905761B2 (en) * | 2020-10-28 | 2024-02-20 | Globe (jiangsu) Co., Ltd. | Electric drill |
USD963704S1 (en) * | 2020-12-30 | 2022-09-13 | Dipperfox Oü | Drill bit |
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