US20140064848A1 - Strike Off Apparatus - Google Patents
Strike Off Apparatus Download PDFInfo
- Publication number
- US20140064848A1 US20140064848A1 US13/601,407 US201213601407A US2014064848A1 US 20140064848 A1 US20140064848 A1 US 20140064848A1 US 201213601407 A US201213601407 A US 201213601407A US 2014064848 A1 US2014064848 A1 US 2014064848A1
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- Prior art keywords
- blade
- strike
- guide
- frame
- collar
- 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
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
- E01C19/4866—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with solely non-vibratory or non-percussive pressing or smoothing means for consolidating or finishing
- E01C19/4873—Apparatus designed for railless operation
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
- E01C19/18—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect
- E01C19/187—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect solely for spreading-out or striking-off deposited mixtures, e.g. spread-out screws, strike-off boards
Definitions
- the present disclosure generally relates to a strike off apparatus such as those disposed on paving machines and the like.
- asphalt road paving machines have a hopper located at the front for receiving hot asphalt paving material and a conveyor for delivering the asphalt paving material from the hopper to the rear of the machine and depositing the asphalt onto the road surface to be paved.
- An auger is located at the rear of the machine for distributing some of the asphalt material laterally to the sides of the road surface.
- Such paving machines also include a screed and a strike off apparatus.
- the strike off apparatus is typically located between the auger and the screed.
- the screed is used to smooth out and compress the asphalt to the desired road mat thickness.
- the strike off apparatus(es) is/are used to distribute the paving material in front of the screed.
- the strike-off apparatus includes a blade that is vertically adjustable.
- two manual screw actuators are typically utilized to move the blade up and down.
- the actuators are generally located at opposite ends of the blade. Both actuators must be turned at the same time, and at the same rate, otherwise binding of the blade occurs and the blade becomes “stuck.”
- a set of four guide slots may be used in conjunction with the pair of actuators to help guide the movement of the blade and limit blade deflection due to asphalt load. These guides can also contribute to binding of the blade if the blade is raised or lowered unevenly.
- each connective member includes a rod having a first end engaged with the strike off member and a second end engaged with the screed extension. The first end may have an exterior threaded portion that is threadably engaged with the strike off member.
- the disclosure states that two connective members are preferred because a device with a single connective member is less rigid or stable and devices with more than two connective members require an excessive amount of adjusting of the connective members. This type of strike off apparatus has the drawbacks discussed above. A better design is needed.
- a strike off apparatus may comprise a frame, a collar mounted to the frame, a blade mounted to the frame, a guide disposed within the channel, and an actuator operatively connected to the guide.
- the blade may be moveable from a first position to a second position.
- the actuator may be configured to move the blade from the first position to a second position.
- the frame and collar may define a first portion of a generally vertical channel.
- a strike off apparatus mounted to a vehicle may comprise a frame, a collar mounted to the frame, the frame and collar defining a generally vertical channel, a blade mounted to the frame, a guide mounted to the blade and disposed within the channel, and an actuator operatively connected to the guide.
- the blade may be moveable from a first position to a second position.
- the actuator may be configured move the blade from a first position to a second position.
- the guide may include first and second generally parallel guide side edges.
- a method of moving vertically a blade in a strike off assembly may include a frame, the blade defining an aperture and mounted to the frame, a collar mounted to the frame, the frame and the collar defining a generally vertical channel, a guide disposed within the channel, and a pin disposed within the aperture.
- the blade may be moveable from a first position to a second position.
- the method may comprise moving the guide vertically within the channel from a first position to a second position, and guiding the blade movement by sliding the blade vertically on the pin in the aperture.
- FIG. 1 is a perspective view of an exemplary strike off apparatus constructed in accordance with the teachings of this disclosure
- FIG. 2 is a cross-sectional view of the exemplary strike off apparatus of FIG. 1 when the blade is in an exemplary first position in which the blade is fully lowered;
- FIG. 3 is a cross-sectional view of the exemplary strike off apparatus of FIG. 1 when the blade is in an exemplary second position in which the blade is fully raised;
- FIG. 4 is perspective view of a machine that incorporates the features of the present disclosure.
- FIGS. 2-3 illustrate cross-sectional views of the strike off apparatus 100 of FIG. 1 . While the following detailed description and drawings are made with reference to a strike off apparatus 100 used on paving machines, the teachings of this disclosure may be employed on other industrial and paving machines.
- FIG. 4 illustrates one example of a paving machine 200 that incorporates the features of the present disclosure.
- the paving machine 200 includes frame 202 , an engine 204 , a ground engaging assembly 206 and drive train components (not shown) mounted the frame 202 .
- the ground engaging assembly 206 may be comprised of a track arrangement, wheels or the like.
- the frame 202 may include a cab assembly 208 .
- the paving machine 200 may also include a hopper 210 for storing paving material disposed near the front of the machine 200 , a screed 212 mounted to the frame 202 near the rear of the machine 200 , an auger 214 and a strike off apparatus 100 mounted on the machine 200 .
- the strike off apparatus 100 may comprise a frame 102 , a collar 104 mounted to the frame, a blade 106 , a guide 108 ( FIGS. 2-3 ) and an actuator 110 .
- the frame 102 may include a body 112 , a first sidewall 114 , a second sidewall 116 and a top wall 118 disposed between the sidewalls 114 , 116 .
- the sidewalls 114 , 116 and the top wall 118 may each be disposed generally perpendicular to the body 112 .
- the first and second sidewalls 114 , 116 may be generally parallel to each other.
- the first sidewall 114 may be disposed proximal to a first edge 122 of the body 112 and the second sidewall 116 may be disposed proximal to a second edge 124 of the body 112 .
- each sidewall is fixedly secured to the body by welding, or the like.
- the top wall 118 may include a lip 120 that may overlap a portion of each sidewall 114 , 116 .
- the frame 102 may also include a first elongated support member 126 and a second elongated support member 128 .
- the first support member 126 may extend between the first sidewall 114 and the collar 104
- the second support 128 member may extend between the collar 104 and the second sidewall 116 .
- the support members 126 , 128 may be hollow or may be solid. In one embodiment, the support members 126 , 128 may be fixedly mounted to the body by welding, or the like.
- the body 112 of the frame 102 and the first sidewall 114 may define a first slit 130 .
- the body 112 of the frame 102 and the second sidewall 116 may define a second slit 132 .
- the first and second slits 130 , 132 may each be configured to receive the blade 106 .
- the collar 104 may be mounted to the body 112 of the frame 102 .
- the collar 104 may be fixedly secured to the frame 102 by welding, or the like.
- the collar 104 may be a three sided structure with a perimeter that generally resembles a squared letter C (or a rectangle with one side removed.)
- the collar may have a primary side 138 and a secondary side 140 .
- the body 112 of the frame 102 and the collar 104 may define a first portion 134 of a generally vertical channel 136 (see FIGS. 2-3 ).
- the collar 104 may be generally centered on the frame 102 and the blade 106 . In other embodiments, the collar 104 may be positioned elsewhere on the frame 102 .
- the collar 104 may be proximal to the center but may be closer to the first sidewall 114 than to the second sidewall 116 . In another embodiment, the collar 104 may be proximal to the center but may be closer to the second sidewall 116 than to the first sidewall 114 .
- the blade 106 may be vertically moveable between a first 142 and a second position 144 .
- the blade may define a first elongated aperture 146 and a second elongated aperture 148 .
- the apertures 146 , 148 may be slot-like in shape. Other elongated shapes may also be utilized.
- the blade 106 may be mounted to the body 112 of the frame 102 .
- the blade 106 may be generally flat.
- the strike off apparatus 100 may include a first attachment member 150 and a second attachment member 152 .
- the first attachment apparatus 150 may extend through the first elongated aperture 146 in the blade 106 and through the body 112 .
- the second attachment apparatus 152 may extend through the second elongated aperture 148 in the blade 106 and through the body 112 .
- each of the first and second attachment apparatuses 150 , 152 may include a spacer 151 and a pin 153 configured to extend through the blade 106 and body 112 .
- Each pin 153 may be received in one of the elongated aperture 146 , 148 and the blade 106 may be configured to slide on the pins 153 .
- other types of attachment apparatuses 150 , 152 may be used that allow vertical movement of the blade.
- the blade 106 and the collar 104 may define a second portion 154 of the vertical channel 136 .
- the blade may also include first and second winged portions 156 , 158 .
- the first winged portion 156 may be slidingly disposed in the first slit 130 .
- the second winged portion 158 may be slidingly disposed in the second slit 132 .
- the guide 108 may be disposed in the vertical channel 136 .
- the guide 108 may be generally flat and elongated in shape.
- the guide 108 may have first and second side edges 160 , 162 .
- the guide 108 is generally flat and the guide side edges 160 , 162 are generally parallel and scalloped in shape. In other embodiments, the guide side edges may be other geometries than scalloped.
- the first guide edge 160 may be proximal to the primary side 138 of the collar 104 .
- the second guide edge 162 may be proximal to the secondary side 140 of the collar 104 .
- the guide 108 may define a window 164 .
- the guide 108 may be mounted to the blade 106 .
- the window 164 may be disposed on the blade 106 and the guide 108 may be secured to the blade 106 by welding around the perimeter of the window 164 .
- the actuator 110 may be operatively connected to the guide 108 . More specifically, the actuator 110 may be configured to move the blade 106 from a first position 142 to a second position 144 .
- the actuator may include a rod 166 and a pocket 168 .
- the rod 166 may have a threaded portion 170 .
- the pocket 168 may define an inner wall 172 having passageway threads 174 configured for mutual engagement with the threaded portion 170 of the rod 166 .
- the pocket may be mounted to the guide 108 . In one embodiment, the pocket 168 may be welded to the guide 108 . Other methods of securing the pocket 168 to the guide 108 may be used.
- the actuator may also include a handle 176 .
- the handle 176 may be configured to rotate the rod 166 . Rotation of the rod 166 in one direction causes the pocket 168 and the attached guide 108 (and the blade 106 attached to the guide) to climb up the threaded portion of the rod 166 . Rotation of the rod 166 in the opposite direction may cause the pocket 168 and the attached guide 108 (and blade 106 ) to climb down the threaded portion 170 of the rod 166 .
- Other actuators such as a ratchet assembly, may also be used to raise and lower the guide 108 in the vertical channel 136 .
- the strike off apparatus 100 may also include a rib 178 .
- the rib 178 may be secured to the first and second support members 126 , 128 .
- the rib 178 may also be mounted to the first and second sidewalls 114 , 116 and to the first and second support members 126 , 127 .
- the rib 178 may also be mounted to the body 112 and to the outside surface of the collar 104 .
- the rib 178 may be mounted in a generally perpendicular orientation to the body 112 and the sidewalls 114 , 116 .
- the rib 178 may be mounted by welding, bolting, or the like.
- a method of moving the blade 106 in the above described strike off assembly 100 is also disclosed.
- the method may comprise moving the guide 108 vertically within the channel 136 , and guiding the blade 106 movement by sliding the blade 106 on the pins 153 disposed in the blade apertures 146 , 148 .
- the method may further comprise discontinuing upward movement of the blade 106 when the pins 153 are disposed at the lower end 180 (best seen in FIG. 2 ) of the aperture 146 , 148 .
- the moving step may be accomplished by rotating the threaded portion 170 of the rod 166 in the pocket 168 that is mounted on the guide 108 .
- the pocket 168 defining an inner wall 172 having passageway threads 174 configured for mutual engagement with the threaded portion 170 of the rod 166 .
- the present disclosure may find applicability in reducing the likelihood that the blade 106 of a strike off apparatus 100 binds during vertical movement and in decreasing blade deflection during paving due to asphalt loading.
- the blade 106 may be vertically raised and lowered.
- the actuator 110 is operably connected to the guide 108 to move the blade 106 from a first vertical position 142 to a second vertical position 144 .
- the first and second positions 142 , 144 may be any position between and including the fully lowered position and the fully raised position.
- the use of one single actuator 110 provides a single point of actuation 186 for raising and lowering the blade 106 of the strike off apparatus 100 . This single point of actuation 186 eliminates binding of the blade 106 due to multiple actuator rods (or the like) being turned at different rates or asynchronously.
- the actuator 110 may be a screw actuator 110 including a handle 176 , a threaded rod 166 and a pocket 168 having an inner wall 172 with passageway threads 174 .
- Rotation of the handle 176 rotates the threaded rod 166 .
- the handle 176 and rod 166 may be rotated in the clockwise and counterclockwise directions.
- the rod 166 is rotated in a first direction the engagement of the threaded rod 166 and the threads 174 of the pocket 168 cause the pocket 168 to climb up the rod 166 .
- the guide 108 moves up in the vertical channel 136 as the pocket 168 moves up the rod 166 .
- the elongated geometry of the guide 108 provides for stability of the blade 106 during vertical movement and during paving.
- the first and second guide edges 160 , 162 steer the movement of the guide 108 in the channel 136 and provide for relatively even movement of the guide 108 in the channel 136 .
- the first and second guide edges 160 , 162 may be scalloped edges, or similar geometry, in order to decrease surface friction between the primary and secondary sides 138 , 140 of the collar 104 (more, specifically the inner wall of) and the guide 108 .
- the blade 106 moves with the guide 108 .
- the blade 106 slides on the pins 153 (or the like) that extend through the elongated apertures 146 , 148 and the winged portions 156 , 158 of the blade 106 slide upward in the slits 130 , 132 .
- Resistance of each pin 153 against the lower end 180 (best seen in FIG. 2 ) of the elongated aperture 146 , 148 may limit the upward distance that the blade 106 may travel.
- the resistance of the blade 106 against the peak 182 (best seen in FIG. 1 ) of the slits 130 , 132 may limit the upward distance that the blade 106 may travel.
- the actuator 110 is activated.
- the rod 166 is rotated in a second direction, opposite to the first direction, the engagement of the threaded rod 166 and the passageway threads 174 of the pocket 168 cause the pocket 168 to climb down the rod 166 and with it the guide 108 and blade 106 .
- first and second guide edges 160 , 162 steer the movement of the guide 108 in the channel 136 and provide for relatively even movement of the guide 108 in the channel 136 .
- the geometry of the guide edges 160 , 162 decrease surface friction between the primary and secondary sides 138 , 140 of the collar 104 (more, specifically the inner wall of) and the guide 108 .
- the collar 104 and the guide 108 provide increased structural support to the blade 106 to limit distortion of the blade 106 under asphalt (or the like) loads.
- the slits 130 , 132 at either side of the strike off apparatus 100 provide support to the blade 106 to limit blade 106 deflection due to heavy asphalt loads.
- the pins 153 and elongate aperture 146 , 148 arrangements assist with the positioning of the blade 106 during movement and provide attachment to the frame for support during paving.
- the sidewalls 114 , 116 , support members 126 , 128 and rib 178 also provide additional structural strength to withstand paving loads.
- the features disclosed herein may be particularly beneficial to paving machines 200 that utilize strike off apparatus 100 to spread asphalt loads.
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Abstract
A strike off apparatus and method for moving a blade in such an apparatus are disclosed. The strike off apparatus may comprise a frame, a collar mounted to the frame, a blade mounted to the frame and moveable from a first position to a second position, a guide disposed within the channel, and an actuator operatively connected to the guide. The actuator may be configured to move the blade from the first position to a second position. The frame and collar may define a first portion of a generally vertical channel.
Description
- The present disclosure generally relates to a strike off apparatus such as those disposed on paving machines and the like.
- Typically, asphalt road paving machines have a hopper located at the front for receiving hot asphalt paving material and a conveyor for delivering the asphalt paving material from the hopper to the rear of the machine and depositing the asphalt onto the road surface to be paved. An auger is located at the rear of the machine for distributing some of the asphalt material laterally to the sides of the road surface. Such paving machines also include a screed and a strike off apparatus. The strike off apparatus is typically located between the auger and the screed. The screed is used to smooth out and compress the asphalt to the desired road mat thickness. The strike off apparatus(es) is/are used to distribute the paving material in front of the screed.
- The strike-off apparatus includes a blade that is vertically adjustable. To adjust the blade, two manual screw actuators are typically utilized to move the blade up and down. The actuators are generally located at opposite ends of the blade. Both actuators must be turned at the same time, and at the same rate, otherwise binding of the blade occurs and the blade becomes “stuck.” Sometimes, a set of four guide slots may be used in conjunction with the pair of actuators to help guide the movement of the blade and limit blade deflection due to asphalt load. These guides can also contribute to binding of the blade if the blade is raised or lowered unevenly.
- U.S. Pat. No. 6,174,105 issued Jan. 16, 2001 (the '105 Patent) incorporates a pair of threaded rods for raising and lowering a strike off blade. As shown in FIGS. 3-6 of the '105 Patent, each connective member includes a rod having a first end engaged with the strike off member and a second end engaged with the screed extension. The first end may have an exterior threaded portion that is threadably engaged with the strike off member. The disclosure states that two connective members are preferred because a device with a single connective member is less rigid or stable and devices with more than two connective members require an excessive amount of adjusting of the connective members. This type of strike off apparatus has the drawbacks discussed above. A better design is needed.
- In accordance with one aspect of the disclosure, a strike off apparatus is disclosed. The strike off apparatus may comprise a frame, a collar mounted to the frame, a blade mounted to the frame, a guide disposed within the channel, and an actuator operatively connected to the guide. The blade may be moveable from a first position to a second position. The actuator may be configured to move the blade from the first position to a second position. The frame and collar may define a first portion of a generally vertical channel.
- In accordance with another aspect of the disclosure, a strike off apparatus mounted to a vehicle is disclosed. The strike off apparatus may comprise a frame, a collar mounted to the frame, the frame and collar defining a generally vertical channel, a blade mounted to the frame, a guide mounted to the blade and disposed within the channel, and an actuator operatively connected to the guide. The blade may be moveable from a first position to a second position. The actuator may be configured move the blade from a first position to a second position. The guide may include first and second generally parallel guide side edges.
- In accordance with a further aspect of the disclosure, a method of moving vertically a blade in a strike off assembly is disclosed. The strike off apparatus may include a frame, the blade defining an aperture and mounted to the frame, a collar mounted to the frame, the frame and the collar defining a generally vertical channel, a guide disposed within the channel, and a pin disposed within the aperture. The blade may be moveable from a first position to a second position. The method may comprise moving the guide vertically within the channel from a first position to a second position, and guiding the blade movement by sliding the blade vertically on the pin in the aperture.
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FIG. 1 is a perspective view of an exemplary strike off apparatus constructed in accordance with the teachings of this disclosure; -
FIG. 2 is a cross-sectional view of the exemplary strike off apparatus ofFIG. 1 when the blade is in an exemplary first position in which the blade is fully lowered; -
FIG. 3 is a cross-sectional view of the exemplary strike off apparatus ofFIG. 1 when the blade is in an exemplary second position in which the blade is fully raised; and -
FIG. 4 is perspective view of a machine that incorporates the features of the present disclosure. - Referring now to the drawings, and with specific reference to
FIG. 1 , there is shown a strike off apparatus constructed in accordance with the present disclosure and generally referred to byreference numeral 100.FIGS. 2-3 illustrate cross-sectional views of the strike offapparatus 100 ofFIG. 1 . While the following detailed description and drawings are made with reference to a strike offapparatus 100 used on paving machines, the teachings of this disclosure may be employed on other industrial and paving machines. -
FIG. 4 illustrates one example of apaving machine 200 that incorporates the features of the present disclosure. Thepaving machine 200 includesframe 202, anengine 204, a groundengaging assembly 206 and drive train components (not shown) mounted theframe 202. The groundengaging assembly 206 may be comprised of a track arrangement, wheels or the like. Theframe 202 may include acab assembly 208. Thepaving machine 200 may also include ahopper 210 for storing paving material disposed near the front of themachine 200, a screed 212 mounted to theframe 202 near the rear of themachine 200, anauger 214 and a strike offapparatus 100 mounted on themachine 200. - Turning now to
FIGS. 1-3 , the strike offapparatus 100 may comprise aframe 102, acollar 104 mounted to the frame, ablade 106, a guide 108 (FIGS. 2-3 ) and anactuator 110. - The
frame 102 may include abody 112, afirst sidewall 114, asecond sidewall 116 and atop wall 118 disposed between thesidewalls sidewalls top wall 118 may each be disposed generally perpendicular to thebody 112. In one embodiment, the first andsecond sidewalls first sidewall 114 may be disposed proximal to afirst edge 122 of thebody 112 and thesecond sidewall 116 may be disposed proximal to asecond edge 124 of thebody 112. In one embodiment, each sidewall is fixedly secured to the body by welding, or the like. Thetop wall 118 may include alip 120 that may overlap a portion of eachsidewall - The
frame 102 may also include a firstelongated support member 126 and a secondelongated support member 128. Thefirst support member 126 may extend between thefirst sidewall 114 and thecollar 104, and thesecond support 128 member may extend between thecollar 104 and thesecond sidewall 116. Thesupport members support members - The
body 112 of theframe 102 and thefirst sidewall 114 may define afirst slit 130. Thebody 112 of theframe 102 and thesecond sidewall 116 may define asecond slit 132. The first andsecond slits blade 106. - The
collar 104 may be mounted to thebody 112 of theframe 102. Thecollar 104 may be fixedly secured to theframe 102 by welding, or the like. In one exemplary embodiment, thecollar 104 may be a three sided structure with a perimeter that generally resembles a squared letter C (or a rectangle with one side removed.) The collar may have aprimary side 138 and asecondary side 140. Thebody 112 of theframe 102 and thecollar 104 may define afirst portion 134 of a generally vertical channel 136 (seeFIGS. 2-3 ). In some embodiments, thecollar 104 may be generally centered on theframe 102 and theblade 106. In other embodiments, thecollar 104 may be positioned elsewhere on theframe 102. For example, thecollar 104 may be proximal to the center but may be closer to thefirst sidewall 114 than to thesecond sidewall 116. In another embodiment, thecollar 104 may be proximal to the center but may be closer to thesecond sidewall 116 than to thefirst sidewall 114. - The
blade 106 may be vertically moveable between a first 142 and a second position 144. The blade may define a firstelongated aperture 146 and a secondelongated aperture 148. In one embodiment, theapertures - The
blade 106 may be mounted to thebody 112 of theframe 102. In one embodiment, theblade 106 may be generally flat. The strike offapparatus 100 may include afirst attachment member 150 and asecond attachment member 152. Thefirst attachment apparatus 150 may extend through the firstelongated aperture 146 in theblade 106 and through thebody 112. Similarly, thesecond attachment apparatus 152 may extend through the secondelongated aperture 148 in theblade 106 and through thebody 112. In one embodiment, each of the first andsecond attachment apparatuses spacer 151 and apin 153 configured to extend through theblade 106 andbody 112. Eachpin 153 may be received in one of theelongated aperture blade 106 may be configured to slide on thepins 153. In other embodiments, other types ofattachment apparatuses - The
blade 106 and thecollar 104 may define asecond portion 154 of thevertical channel 136. The blade may also include first and secondwinged portions winged portion 156 may be slidingly disposed in thefirst slit 130. The secondwinged portion 158 may be slidingly disposed in thesecond slit 132. - The
guide 108 may be disposed in thevertical channel 136. In one embodiment, theguide 108 may be generally flat and elongated in shape. Theguide 108 may have first and second side edges 160, 162. In the exemplary embodiment illustrated inFIG. 2 , theguide 108 is generally flat and the guide side edges 160, 162 are generally parallel and scalloped in shape. In other embodiments, the guide side edges may be other geometries than scalloped. Thefirst guide edge 160 may be proximal to theprimary side 138 of thecollar 104. Similarly, thesecond guide edge 162 may be proximal to thesecondary side 140 of thecollar 104. In an embodiment, theguide 108 may define awindow 164. Theguide 108 may be mounted to theblade 106. In one embodiment, thewindow 164 may be disposed on theblade 106 and theguide 108 may be secured to theblade 106 by welding around the perimeter of thewindow 164. - The
actuator 110 may be operatively connected to theguide 108. More specifically, theactuator 110 may be configured to move theblade 106 from afirst position 142 to a second position 144. In one embodiment, the actuator may include arod 166 and apocket 168. Therod 166 may have a threadedportion 170. Thepocket 168 may define aninner wall 172 havingpassageway threads 174 configured for mutual engagement with the threadedportion 170 of therod 166. The pocket may be mounted to theguide 108. In one embodiment, thepocket 168 may be welded to theguide 108. Other methods of securing thepocket 168 to theguide 108 may be used. The actuator may also include ahandle 176. Thehandle 176 may be configured to rotate therod 166. Rotation of therod 166 in one direction causes thepocket 168 and the attached guide 108 (and theblade 106 attached to the guide) to climb up the threaded portion of therod 166. Rotation of therod 166 in the opposite direction may cause thepocket 168 and the attached guide 108 (and blade 106) to climb down the threadedportion 170 of therod 166. Other actuators, such as a ratchet assembly, may also be used to raise and lower theguide 108 in thevertical channel 136. - In one embodiment, the strike off
apparatus 100 may also include arib 178. Therib 178 may be secured to the first andsecond support members rib 178 may also be mounted to the first andsecond sidewalls second support members 126, 127. Therib 178 may also be mounted to thebody 112 and to the outside surface of thecollar 104. Therib 178 may be mounted in a generally perpendicular orientation to thebody 112 and thesidewalls rib 178 may be mounted by welding, bolting, or the like. - A method of moving the
blade 106 in the above described strike offassembly 100 is also disclosed. The method may comprise moving theguide 108 vertically within thechannel 136, and guiding theblade 106 movement by sliding theblade 106 on thepins 153 disposed in theblade apertures blade 106 when thepins 153 are disposed at the lower end 180 (best seen inFIG. 2 ) of theaperture portion 170 of therod 166 in thepocket 168 that is mounted on theguide 108. Thepocket 168 defining aninner wall 172 havingpassageway threads 174 configured for mutual engagement with the threadedportion 170 of therod 166. - The present disclosure may find applicability in reducing the likelihood that the
blade 106 of a strike offapparatus 100 binds during vertical movement and in decreasing blade deflection during paving due to asphalt loading. - The
blade 106 may be vertically raised and lowered. Theactuator 110 is operably connected to theguide 108 to move theblade 106 from a firstvertical position 142 to a second vertical position 144. The first andsecond positions 142, 144 may be any position between and including the fully lowered position and the fully raised position. The use of onesingle actuator 110 provides a single point ofactuation 186 for raising and lowering theblade 106 of the strike offapparatus 100. This single point ofactuation 186 eliminates binding of theblade 106 due to multiple actuator rods (or the like) being turned at different rates or asynchronously. - To raise the
blade 106 theactuator 110 is activated. In one embodiment, theactuator 110 may be ascrew actuator 110 including ahandle 176, a threadedrod 166 and apocket 168 having aninner wall 172 withpassageway threads 174. Rotation of thehandle 176 rotates the threadedrod 166. Thehandle 176 androd 166 may be rotated in the clockwise and counterclockwise directions. When therod 166 is rotated in a first direction the engagement of the threadedrod 166 and thethreads 174 of thepocket 168 cause thepocket 168 to climb up therod 166. Because thepocket 168 is mounted to theguide 108, theguide 108 moves up in thevertical channel 136 as thepocket 168 moves up therod 166. The elongated geometry of theguide 108 provides for stability of theblade 106 during vertical movement and during paving. - The first and second guide edges 160, 162 steer the movement of the
guide 108 in thechannel 136 and provide for relatively even movement of theguide 108 in thechannel 136. In some embodiments, the first and second guide edges 160, 162 may be scalloped edges, or similar geometry, in order to decrease surface friction between the primary andsecondary sides guide 108. - Because the
guide 108 is mounted to theblade 106, theblade 106 moves with theguide 108. As theblade 106 moves upward, theblade 106 slides on the pins 153 (or the like) that extend through theelongated apertures winged portions blade 106 slide upward in theslits pin 153 against the lower end 180 (best seen inFIG. 2 ) of theelongated aperture blade 106 may travel. Similarly, the resistance of theblade 106 against the peak 182 (best seen inFIG. 1 ) of theslits blade 106 may travel. - To lower the
blade 106 theactuator 110 is activated. When therod 166 is rotated in a second direction, opposite to the first direction, the engagement of the threadedrod 166 and thepassageway threads 174 of thepocket 168 cause thepocket 168 to climb down therod 166 and with it theguide 108 andblade 106. - Again, the first and second guide edges 160, 162 steer the movement of the
guide 108 in thechannel 136 and provide for relatively even movement of theguide 108 in thechannel 136. In those embodiments in which the first and second guide edges 160, 162 are scalloped, or the like, the geometry of the guide edges 160, 162 decrease surface friction between the primary andsecondary sides guide 108. - As the
blade 106 moves downward theblade 106 slides on the pins 153 (or the like) extending through theelongated apertures winged portions blade 106 slide downward in the slits. Resistance of eachpin 153 against the upper end 184 (best seen inFIG. 3 ) of theelongated aperture blade 106 may be lowered. - During paving, the
collar 104 and theguide 108 provide increased structural support to theblade 106 to limit distortion of theblade 106 under asphalt (or the like) loads. Theslits apparatus 100 provide support to theblade 106 to limitblade 106 deflection due to heavy asphalt loads. Similarly, thepins 153 andelongate aperture blade 106 during movement and provide attachment to the frame for support during paving. Thesidewalls support members rib 178 also provide additional structural strength to withstand paving loads. - The features disclosed herein may be particularly beneficial to paving
machines 200 that utilize strike offapparatus 100 to spread asphalt loads.
Claims (20)
1. A strike off apparatus comprising:
a frame;
a collar mounted to the frame, the frame and collar defining a first portion of a generally vertical channel;
a blade moveable from a first position to a second position, the blade disposed between the collar and the frame;
a substantially flat guide disposed within the channel, the guide including a window therethrough, the window having a perimeter fixedly attached to the blade; and
an actuator operatively connected to the guide, the actuator configured to move the blade from the first position to the second position.
2. The strike off apparatus of claim 1 , in which the frame includes a body, and first and second generally perpendicular, spaced apart, sidewalls disposed on the body.
3. The strike off apparatus of claim 2 , wherein the first sidewall and the body define a first slit and the second sidewall and the body define a second slit, the first and second slits each configured to receive the blade.
4. The strike off apparatus of claim 2 , in which the frame includes a first elongated support member and a second elongated support member, the first support member extending between the first sidewall and the collar, and the second support member extending between the collar and the second sidewall.
5. The strike off apparatus of claim 4 , wherein the collar is generally centered on the frame.
6. The strike off apparatus of claim 1 , wherein the blade and collar define a second portion of the vertical channel.
7. The strike off apparatus of claim 1 , wherein the blade defines first and second elongated apertures.
8. The strike off apparatus of claim 1 , in which the collar includes a primary side and a secondary side, and the guide includes a first guide side edge disposed proximal to the primary side of collar.
9. The strike off apparatus of claim 8 , wherein the first guide side edge of the guide is scalloped.
10. The strike off apparatus of claim 1 , in which the actuator includes a pocket and a rod having a threaded portion, the pocket defining an inner wall having passageway threads configured for mutual engagement with the threaded portion of the rod.
11. The strike off apparatus of claim 1 , wherein the guide defines a window and the window is disposed on the blade.
12. A strike off apparatus mounted to a vehicle, the strike off apparatus comprising:
a frame;
a collar mounted to the frame, the frame and collar defining a generally vertical channel;
a blade disposed between the collar and the frame and moveable vertically between a first and second position;
a substantially flat guide mounted to the blade and disposed within the channel, the guide including a window therethrough and first and second generally parallel guide side edges, the window having a perimeter fixedly attached to the blade; and
an actuator operatively connected to the guide, the actuator configured move the blade from a first position to a second position.
13. The strike off apparatus of claim 12 , in which the vehicle is a paving machine.
14. The strike off apparatus of claim 12 , wherein the strike off apparatus has a single actuation point.
15. The strike off apparatus of claim 12 , in which the blade defines an elongated aperture.
16. The strike off apparatus of claim 15 , further including a pin received in the elongated aperture, wherein the blade is configured to slide on the pin.
17. The strike off apparatus of claim 12 , wherein the guide is generally flat.
18. A method of moving vertically a blade in a strike off apparatus, the strike off assembly including a frame, the blade defining an aperture and disposed between a collar and the frame, the collar mounted to the frame, the frame and the collar defining a generally vertical channel, a substantially flat guide disposed within the channel, the guide including a window therethrough, the window having a perimeter fixedly attached to the blade, and a pin disposed within the aperture, the method comprising:
moving the guide vertically within the channel from a first position to a second position; and
guiding the blade movement by sliding the blade vertically on the pin in the aperture.
19. The method of claim 18 , further comprising discontinuing upward movement of the blade when the pin is disposed at the lower end of the aperture, wherein the aperture is a slot.
20. The method of claim 18 , wherein the activating step is accomplished by rotating a rod having a threaded portion in a pocket mounted on the guide, the pocket defining an inner wall having passageway threads configured for mutual engagement with the threaded portion of the rod.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/601,407 US20140064848A1 (en) | 2012-08-31 | 2012-08-31 | Strike Off Apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/601,407 US20140064848A1 (en) | 2012-08-31 | 2012-08-31 | Strike Off Apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
US20140064848A1 true US20140064848A1 (en) | 2014-03-06 |
Family
ID=50187820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/601,407 Abandoned US20140064848A1 (en) | 2012-08-31 | 2012-08-31 | Strike Off Apparatus |
Country Status (1)
Country | Link |
---|---|
US (1) | US20140064848A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170051460A1 (en) * | 2015-08-19 | 2017-02-23 | George Guilmette | Aggregate Spreading System |
EP3575491A1 (en) * | 2018-06-01 | 2019-12-04 | Joseph Vögele AG | Channel sheet of a road finishing machine |
-
2012
- 2012-08-31 US US13/601,407 patent/US20140064848A1/en not_active Abandoned
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170051460A1 (en) * | 2015-08-19 | 2017-02-23 | George Guilmette | Aggregate Spreading System |
US9797098B2 (en) * | 2015-08-19 | 2017-10-24 | George Guilmette | Aggregate spreading system |
EP3575491A1 (en) * | 2018-06-01 | 2019-12-04 | Joseph Vögele AG | Channel sheet of a road finishing machine |
CN110552275A (en) * | 2018-06-01 | 2019-12-10 | 约瑟夫福格勒公司 | Limiting plate of road paver |
JP2020016141A (en) * | 2018-06-01 | 2020-01-30 | ヨゼフ フェゲーレ アーゲー | Regulation plate for paving vehicle |
EP3575491B1 (en) | 2018-06-01 | 2021-03-24 | Joseph Vögele AG | Road finishing machine with channel sheet extension |
JP2021131012A (en) * | 2018-06-01 | 2021-09-09 | ヨゼフ フェゲーレ アーゲー | Regulating plate of pavement vehicle |
US11479925B2 (en) | 2018-06-01 | 2022-10-25 | Joseph Voegele Ag | Limiting plate of a road paver |
JP7228617B2 (en) | 2018-06-01 | 2023-02-24 | ヨゼフ フェゲーレ アーゲー | Pavement car regulation plate |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CATERPILLAR PAVING PRODUCTS INC., MINNESOTA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ENGEL, BRETT WAYNE;DIERS, DEAN CRAIG;MAGEE, KEVIN JAMES;SIGNING DATES FROM 20120920 TO 20121016;REEL/FRAME:029153/0116 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |