US20170218577A1 - Submersible vibratory head for consolidating concrete - Google Patents
Submersible vibratory head for consolidating concrete Download PDFInfo
- Publication number
- US20170218577A1 US20170218577A1 US15/417,451 US201715417451A US2017218577A1 US 20170218577 A1 US20170218577 A1 US 20170218577A1 US 201715417451 A US201715417451 A US 201715417451A US 2017218577 A1 US2017218577 A1 US 2017218577A1
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- United States
- Prior art keywords
- axis
- vibratory head
- elongate member
- prong
- vibrator assembly
- 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
- E01C19/22—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 consolidating or finishing laid-down unset materials
- E01C19/30—Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
- E01C19/34—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight
- E01C19/38—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight with means specifically for generating vibrations, e.g. vibrating plate compactors, immersion vibrators
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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
- E01C19/22—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 consolidating or finishing laid-down unset materials
- E01C19/30—Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
- E01C19/34—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight
- E01C19/40—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight adapted to impart a smooth finish to the paving, e.g. tamping or vibrating finishers
- E01C19/407—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight adapted to impart a smooth finish to the paving, e.g. tamping or vibrating finishers with elements or parts partly or fully immersed in or penetrating into the material to act thereon, e.g. immersed vibrators or vibrating parts, kneading tampers, spaders
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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
- E01C19/22—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 consolidating or finishing laid-down unset materials
- E01C19/30—Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
- E01C19/34—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight
- E01C19/40—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight adapted to impart a smooth finish to the paving, e.g. tamping or vibrating finishers
- E01C19/402—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight adapted to impart a smooth finish to the paving, e.g. tamping or vibrating finishers the tools being hand-guided
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F21/00—Implements for finishing work on buildings
- E04F21/20—Implements for finishing work on buildings for laying flooring
- E04F21/24—Implements for finishing work on buildings for laying flooring of masses made in situ, e.g. smoothing tools
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
- E04G21/08—Internal vibrators, e.g. needle vibrators
-
- 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
- E01C19/4833—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 tamping or vibrating means for consolidating or finishing, e.g. immersed vibrators, with or without non-vibratory or non-percussive pressing or smoothing means
Definitions
- the present disclosure relates to powered concrete vibrators. More specifically, the present disclosure relates to concrete vibrators powered by power tools.
- Power tools come in a variety of shapes and sizes and may be used for a variety of purposes.
- concrete-finishing tools e.g., screeds, edgers, groovers, floats, consolidators
- yard tools e.g., edgers, hedge trimmers, weed cutters
- Concrete vibrators are powered by rotary power units. Effective vibration of concrete requires sufficient rotary speed to rotate a vibratory element, such as an eccentric, at a rate sufficient to develop vibration sufficient to consolidate concrete.
- a vibrator assembly for consolidating concrete comprises a power source, a vibratory head driven by the power source, the vibratory head operable to generate mechanical oscillation, and a submersible elongate member extending from the vibratory head, the elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete.
- the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete comprises an elongate member that extends laterally from the vibratory head.
- the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete is secured to a coupler securing the elongate member to the vibratory head.
- the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete comprises a pair of elongate members that extends laterally from each side of the vibratory head.
- the coupler comprises a clamp that secures an elongate member to the vibratory head.
- the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete further comprises a prong that extends from an elongate member, the prong having an a length that defines an axis, the axis of the prong intersecting the axis of the elongate member.
- the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete comprises a plurality of prongs that each extends from an elongate member, the prongs each having an a length that defines an axis, the axis of each prong intersecting the axis of the elongate member from which the prong extends.
- the coupler comprises a tee-clamp that secures an elongate member to the vibratory head.
- the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete is submergible in uncured concrete during operation.
- a vibrator assembly for consolidating concrete comprises a power source, a vibratory head driven by the power source, the vibratory head operable to generate mechanical oscillation, and a pair of elongate rods that extend laterally from opposite sides of the vibratory head, the rods being mechanically oscillated by the vibratory head, the rods being configured to be fully submerged in uncured concrete to transfer the mechanical oscillation to the uncured concrete.
- each rod comprises a prong that extends from the rod, the prong having a length that defines an axis, the axis of the prong intersecting the axis of the elongate rod.
- the axis of the prong is perpendicular to the axis of the respective rod.
- each rod comprises a plurality of prongs that extend from the respective rod, each prong having a length that defines an axis, the axis of each prong intersecting the axis of the elongate rod.
- the axis of each prong is perpendicular to the axis of the respective rod.
- the power source has a variable speed and is configured to allow a user to vary the displacement of the rods by controlling a speed input.
- a vibrator assembly for consolidating concrete comprises a vibratory head configured to be driven by a power source, the vibratory head operable to generate mechanical oscillation, a coupler secured to the vibratory head, and a pair of elongate rods secured to the coupler, the elongate rods extending laterally from opposite sides of the vibratory head, the rods each having an axis, with the axis of the two rods being generally parallel, the rods being mechanically oscillated by the vibratory head, wherein each rod comprises a plurality of prongs that extend from the respective rod, each prong having a length that defines an axis, the axis of each prong intersecting the axis of the elongate rod.
- the axis of each prong is perpendicular to the axis of the respective rod the rods being configured to be fully submerged in uncured concrete to transfer the mechanical oscillation to the uncured concrete.
- FIG. 1 is a perspective view of a tool having submergible screed rods attached to a vibration head by a connector, the vibration head receiving power from an engine to transfer vibration to concrete to remove air pockets in the concrete layer;
- FIG. 2 is a side view showing a portion of the vibration head and the submergible screed rods submerged in the concrete from the right side of the person operating the tool;
- FIG. 3 is a side view showing a portion of the vibration head and the submergible screed rods submerged in the concrete when reinforcing bars are present in the concrete layer from the right side of the person operating the tool;
- FIG. 4 is a side view similar to FIG. 2 showing a portion of the vibration head and the submergible screed rods submerged in the concrete from the right side of the person operating the tool, the clamp supporting the submergible screed rods being rotated about the vibration head to a different orientation;
- FIG. 5 is an enlarged view of a first embodiment of a releasable cross clamp for securing the ;
- FIG. 6 is a plan view of the first embodiment of the clamp of FIG. 5 ;
- FIG. 7 is an elevation view of a second embodiment of a clamp (tee clamp).
- FIG. 8 is an elevation view of a second embodiment of submergible screed rods having a prong.
- FIG. 9 is an elevation view of a third embodiment of submergible screed rods having a multiple prongs.
- a tool 10 includes a vibratory power unit 12 and submergible elongate members embodied as screed rods 14 coupled to the vibratory power unit 12 by a releasable clamp 16 .
- the vibratory power unit 12 further includes an internal combustion engine 18 , a rigid shaft 20 , a flexible shaft 22 , and a vibration head 24 .
- the rigid shaft 20 is coupled to the engine 18 at a proximal end 26 of the rigid shaft 20 and extends to the flexible shaft 22 .
- the flexible shaft 22 is coupled to the rigid shaft 20 via a connector 28 at a distal end 30 of the rigid shaft 20 .
- the flexible shaft 22 further extends to be coupled to the vibration head 24 .
- the vibration head 24 encloses a vibrator 32 and is coupled to the submergible screed rods 14 . Rotation is transferred from the engine 18 through the shafts 20 , 22 to an eccentric in the vibrator 32 that induces vibration as the eccentric is rotated, as is known in the art.
- the vibration head 24 and the submergible screed rods 14 are configured to be submerged under concrete to vibrate concrete to remove air pockets formed in concrete layer.
- the screed rods 14 define an axis 15 .
- the speed of the engine 18 is controlled by a throttle 38 , as is known in the art. The variation of speed of engine 18 allows a user to vary the vibration imparted to the concrete.
- variations in the speed of the engine 18 causes variations in the speed of rotation of the eccentric, which, in turn, causes variations in the displacement of the screed rods 14 .
- a user may tune the displacement of the screed rods 14 by controlling the speed, with the thickness and slump (viscosity) resisting displacement of the screed rods 14 when the tool 10 is used.
- the rigid shaft 20 and the flexible shaft 22 are hollow cylindrical tubes support a rotating flexible shaft that extends from the engine 18 to the vibrator 32 .
- the tool 10 may include one monolithic rigid shaft or one monolithic flexible shaft instead of the rigid shaft 20 and the flexible shaft 22 .
- a lever control lift handle 34 is removably coupled to the rigid shaft 20 to facilitate manipulation of the tool 10 by a user. It should be appreciated that other handles may be attached to the rigid shaft 20 to facilitate manipulation of the tool 10 .
- the level control lift handler 34 may be permanently attached to the rigid shaft 20 .
- the tool 10 may further include an isolation unit (not shown) along the flexible shaft 22 between the connector 28 and the vibration head 24 .
- the isolation unit is configured to reduce the vibrations experience by the user directly grasping the tool 10 .
- the isolation unit may also reduce vibrations experienced by the engine 18 .
- the vibratory power tool having an isolation unit is disclosed in U.S. Pat. No. 7,097,384, issued Aug. 29, 2006, which is assigned to the assignee of the present invention, and the disclosure of which is incorporated herein by reference.
- the tool 10 includes two submergible screed rods 14 , one on each side of the vibration head 24 .
- the tool 10 may include one submergible screed rod, as shown in FIG. 7 , which will be described in detail below.
- the vibration head 24 portion of the tool 10 and the submergible screed rods 14 are submerged under the concrete 40 above the ground 44 as shown in FIGS. 2-4 .
- the vibrator 32 operates to generate vibration as is known in the art.
- vibration is then transferred to the vibration head 24 then to the attached submergible screed rods 14 .
- Each screed rod 14 has an elongated rod shape to increase the contact surface area with concrete 40 .
- the concrete 40 is consolidated by the vibration.
- the tool 10 is placed in the concrete 40 such that the vibration head 24 and the submergible screed rods 14 are positioned between the reinforcing bar 46 and the surface 42 as shown in FIG. 3 .
- the submergible screed rods 14 vibrate and move through the concrete 40 parallel to the reinforcing bars 46 to consolidate the concrete 40 .
- each of the submergible screed rods 14 is attached on each side of the vibration head 24 via a cross-clamp 116 .
- the cross-clamp 116 includes a central opening 118 and two chambers 120 , 122 .
- a first chamber 120 is positioned opposite a second chamber 122 .
- Each chamber having a radius for mating against an outer surface of one end of the submergible screed rod 14 as shown in FIG. 6 .
- the central opening 118 has a radius bigger than a radius of the vibration head 24 and is configured to slide over the vibration head 24 .
- the central opening 118 of the cross-clamp 116 is moveable along the vibration head 24 to position the submergible screed rods 14 relative to the distal end 36 of the vibration head 24 .
- An initial position of the submergible screed rods 14 may depend on the depth of the concrete 40 and may change throughout the process because the air pockets move in the direction from the ground 44 to the top surface 42 of the concrete. If a large volume of concrete 40 is poured at once, the weight of the deep concrete 40 may prevent the air pockets from escaping to the surface 42 and trap the air pockets.
- the submergible screed rod 14 may be initially positioned close to the distal end 36 of the vibration head 24 , which will place the submergible screed rod 14 near the ground 44 to transfer vibration at the bottom portion of the concrete to facilitate the air pockets to rise to the upper portion of the concrete. After a sweep across the bottom portion of the concrete, the submergible screed rod 14 may be repositioned on the vibration head 24 such that the submergible screed rod 14 is in the middle portion of the concrete to facilitate the air pockets in the middle portion to rise to the surface 42 .
- the central opening 118 further includes a slit 124 that allows the central opening 118 to be tightened when a desirable position of the submergible screed rods 14 on the vibration head 24 is achieved.
- the cross-clamp 116 is fixed by tightening bolts 126 of the slit 124 .
- the cross-clamp may have two clamp members created by two slits in the central opening. Each clamp member includes a chamber to receive one end of the submergible screed rod 14 . Each clamp member is coupled to the vibration head 24 by aligning two slits and tightening the bolts on each slit.
- the releasable clamp 16 may be a tee clamp 216 as shown in FIG. 7 .
- the tee clamp 216 includes two clamping members 218 , 220 that are coupled to the vibration head 24 .
- Each clamping member 218 , 220 includes a horizontal groove and a vertical groove.
- the horizontal groove has a generally semicircular cylindrical shape and is configured to receive a portion of the submergible screed rod 14 .
- the vertical groove also has a generally semicircular cylindrical shape and is configured to receive the distal end 36 of the vibration head 24 .
- the submergible screed rod 14 When two clamping members 218 , 220 are aligned, the submergible screed rod 14 is positioned between the two horizontal grooves of the clamping members 218 , 220 and the rotational head 24 is positioned between the two vertical grooves of the clamping members 218 , 220 .
- the tool 10 includes one submergible screed rod 14 that extends through the tee clamp 216 .
- the tee clamp that are commonly used and known in the art, such as a socket tee, may be used.
- FIGS. 8-9 alternative embodiments of the submergible screed rod 114 , 214 are shown. Both types of submergible screed rod 114 , 214 are compatible with all of the releasable clamps 16 , 116 , 216 described above.
- a submergible screed rod 114 includes an elongated rod 130 having a prong 132 extending from a free end 134 of the elongated rod 130 towards the ground 44 .
- the opposite end 136 of the elongated rod 130 is configured to be received in one of the releasable clamp 16 , 116 , 216 .
- the prong 132 defines an axis 117 that intersects an axis 115 of the screed rod 114 .
- a submergible screed rod 214 includes an elongated body 230 having a multiple prongs 232 projecting downwardly from the elongated body 230 to the ground 44 .
- the multiple prongs 232 facilitate to transfer vibration more evenly throughout the concrete layer 40 .
- the prongs 232 each define an axis 217 that intersects the axis 215 of the screed rod 214 .
Abstract
A vibratory head for a concrete vibrator includes elongate structures suitable for use to consolidate uncured concrete in a horizontal or flat application.
Description
- This application claims priority under 35 U.S.C. § 119(e) to U.S. Provisional Application Ser. No. 62/288,718, filed Jan. 29, 2016, which is incorporated herein by reference in its entirety.
- The present disclosure relates to powered concrete vibrators. More specifically, the present disclosure relates to concrete vibrators powered by power tools.
- Power tools come in a variety of shapes and sizes and may be used for a variety of purposes. For example, there are concrete-finishing tools (e.g., screeds, edgers, groovers, floats, consolidators) and yard tools (e.g., edgers, hedge trimmers, weed cutters), to name just a few.
- Concrete vibrators are powered by rotary power units. Effective vibration of concrete requires sufficient rotary speed to rotate a vibratory element, such as an eccentric, at a rate sufficient to develop vibration sufficient to consolidate concrete.
- The present application discloses one or more of the features recited in the appended claims and/or the following features which, alone or in any combination, may comprise patentable subject matter:
- According to a first aspect of the present disclosure, a vibrator assembly for consolidating concrete comprises a power source, a vibratory head driven by the power source, the vibratory head operable to generate mechanical oscillation, and a submersible elongate member extending from the vibratory head, the elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete.
- In some embodiments, the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete comprises an elongate member that extends laterally from the vibratory head.
- In some embodiments, the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete is secured to a coupler securing the elongate member to the vibratory head.
- In some embodiments, the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete comprises a pair of elongate members that extends laterally from each side of the vibratory head.
- In some embodiments, the coupler comprises a clamp that secures an elongate member to the vibratory head.
- In some embodiments, the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete further comprises a prong that extends from an elongate member, the prong having an a length that defines an axis, the axis of the prong intersecting the axis of the elongate member.
- In some embodiments, the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete comprises a plurality of prongs that each extends from an elongate member, the prongs each having an a length that defines an axis, the axis of each prong intersecting the axis of the elongate member from which the prong extends.
- In some embodiments, the coupler comprises a tee-clamp that secures an elongate member to the vibratory head.
- In some embodiments, the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete is submergible in uncured concrete during operation.
- According to a second aspect of the present disclosure, a vibrator assembly for consolidating concrete comprises a power source, a vibratory head driven by the power source, the vibratory head operable to generate mechanical oscillation, and a pair of elongate rods that extend laterally from opposite sides of the vibratory head, the rods being mechanically oscillated by the vibratory head, the rods being configured to be fully submerged in uncured concrete to transfer the mechanical oscillation to the uncured concrete.
- In some embodiments, each rod comprises a prong that extends from the rod, the prong having a length that defines an axis, the axis of the prong intersecting the axis of the elongate rod.
- In some embodiments, the axis of the prong is perpendicular to the axis of the respective rod.
- In some embodiments, each rod comprises a plurality of prongs that extend from the respective rod, each prong having a length that defines an axis, the axis of each prong intersecting the axis of the elongate rod.
- In some embodiments, the axis of each prong is perpendicular to the axis of the respective rod.
- In some embodiments, the power source has a variable speed and is configured to allow a user to vary the displacement of the rods by controlling a speed input.
- According to a third aspect of the present disclosure, a vibrator assembly for consolidating concrete comprises a vibratory head configured to be driven by a power source, the vibratory head operable to generate mechanical oscillation, a coupler secured to the vibratory head, and a pair of elongate rods secured to the coupler, the elongate rods extending laterally from opposite sides of the vibratory head, the rods each having an axis, with the axis of the two rods being generally parallel, the rods being mechanically oscillated by the vibratory head, wherein each rod comprises a plurality of prongs that extend from the respective rod, each prong having a length that defines an axis, the axis of each prong intersecting the axis of the elongate rod.
- In some embodiments, the axis of each prong is perpendicular to the axis of the respective rod the rods being configured to be fully submerged in uncured concrete to transfer the mechanical oscillation to the uncured concrete.
- Additional features, which alone or in combination with any other feature(s), including those listed above and those listed in the claims, may comprise patentable subject matter and will become apparent to those skilled in the art upon consideration of the following detailed description of illustrative embodiments exemplifying the best mode of carrying out the invention as presently perceived.
- The detailed description particularly refers to the accompanying figures in which:
-
FIG. 1 is a perspective view of a tool having submergible screed rods attached to a vibration head by a connector, the vibration head receiving power from an engine to transfer vibration to concrete to remove air pockets in the concrete layer; -
FIG. 2 is a side view showing a portion of the vibration head and the submergible screed rods submerged in the concrete from the right side of the person operating the tool; -
FIG. 3 is a side view showing a portion of the vibration head and the submergible screed rods submerged in the concrete when reinforcing bars are present in the concrete layer from the right side of the person operating the tool; -
FIG. 4 is a side view similar toFIG. 2 showing a portion of the vibration head and the submergible screed rods submerged in the concrete from the right side of the person operating the tool, the clamp supporting the submergible screed rods being rotated about the vibration head to a different orientation; -
FIG. 5 is an enlarged view of a first embodiment of a releasable cross clamp for securing the ; -
FIG. 6 is a plan view of the first embodiment of the clamp ofFIG. 5 ; -
FIG. 7 is an elevation view of a second embodiment of a clamp (tee clamp); -
FIG. 8 is an elevation view of a second embodiment of submergible screed rods having a prong; and -
FIG. 9 is an elevation view of a third embodiment of submergible screed rods having a multiple prongs. - For the purposes of promoting an understanding of the principles of the invention, reference will now be made to one or more illustrative embodiments shown in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended.
- As shown in
FIG. 1 , atool 10 includes avibratory power unit 12 and submergible elongate members embodied as screedrods 14 coupled to thevibratory power unit 12 by areleasable clamp 16. Thevibratory power unit 12 further includes aninternal combustion engine 18, arigid shaft 20, aflexible shaft 22, and avibration head 24. Therigid shaft 20 is coupled to theengine 18 at aproximal end 26 of therigid shaft 20 and extends to theflexible shaft 22. Theflexible shaft 22 is coupled to therigid shaft 20 via aconnector 28 at adistal end 30 of therigid shaft 20. Theflexible shaft 22 further extends to be coupled to thevibration head 24. Thevibration head 24 encloses avibrator 32 and is coupled to the submergible screedrods 14. Rotation is transferred from theengine 18 through theshafts vibrator 32 that induces vibration as the eccentric is rotated, as is known in the art. Thevibration head 24 and the submergible screedrods 14 are configured to be submerged under concrete to vibrate concrete to remove air pockets formed in concrete layer. Thescreed rods 14 define anaxis 15. The speed of theengine 18 is controlled by athrottle 38, as is known in the art. The variation of speed ofengine 18 allows a user to vary the vibration imparted to the concrete. It should be understood that variations in the speed of theengine 18 causes variations in the speed of rotation of the eccentric, which, in turn, causes variations in the displacement of thescreed rods 14. A user may tune the displacement of thescreed rods 14 by controlling the speed, with the thickness and slump (viscosity) resisting displacement of thescreed rods 14 when thetool 10 is used. - In the illustrated embodiment, the
rigid shaft 20 and theflexible shaft 22 are hollow cylindrical tubes support a rotating flexible shaft that extends from theengine 18 to thevibrator 32. It should be appreciated that, in some embodiments, thetool 10 may include one monolithic rigid shaft or one monolithic flexible shaft instead of therigid shaft 20 and theflexible shaft 22. - A lever
control lift handle 34 is removably coupled to therigid shaft 20 to facilitate manipulation of thetool 10 by a user. It should be appreciated that other handles may be attached to therigid shaft 20 to facilitate manipulation of thetool 10. - In some embodiments, the level
control lift handler 34 may be permanently attached to therigid shaft 20. - In some embodiments, the
tool 10 may further include an isolation unit (not shown) along theflexible shaft 22 between theconnector 28 and thevibration head 24. In such an embodiment, the isolation unit is configured to reduce the vibrations experience by the user directly grasping thetool 10. The isolation unit may also reduce vibrations experienced by theengine 18. The vibratory power tool having an isolation unit is disclosed in U.S. Pat. No. 7,097,384, issued Aug. 29, 2006, which is assigned to the assignee of the present invention, and the disclosure of which is incorporated herein by reference. - In the illustrative embodiment, the
tool 10 includes two submergible screedrods 14, one on each side of thevibration head 24. In some embodiments, thetool 10 may include one submergible screed rod, as shown inFIG. 7 , which will be described in detail below. - In use, the
vibration head 24 portion of thetool 10 and the submergible screedrods 14 are submerged under the concrete 40 above theground 44 as shown inFIGS. 2-4 . When theengine 18 is active, thevibrator 32 operates to generate vibration as is known in the art. As described above, vibration is then transferred to thevibration head 24 then to the attached submergible screedrods 14. Eachscreed rod 14 has an elongated rod shape to increase the contact surface area withconcrete 40. As thesubmergible screed rods 14 are moved through the concrete 40 parallel to theground 44, the concrete 40 is consolidated by the vibration. - In case where the concrete 40 is poured over reinforcing
bars 46, thetool 10 is placed in the concrete 40 such that thevibration head 24 and the submergible screedrods 14 are positioned between the reinforcingbar 46 and thesurface 42 as shown inFIG. 3 . The submergible screedrods 14 vibrate and move through the concrete 40 parallel to the reinforcingbars 46 to consolidate the concrete 40. - Referring now to
FIG. 4 , the submergible screedrods 14 are attached to thevibration head 24 via thereleasable clamp 16. Specifically, as shown inFIGS. 5-6 , each of the submergible screedrods 14 is attached on each side of thevibration head 24 via across-clamp 116. The cross-clamp 116 includes acentral opening 118 and twochambers first chamber 120 is positioned opposite asecond chamber 122. Each chamber having a radius for mating against an outer surface of one end of thesubmergible screed rod 14 as shown inFIG. 6 . - The
central opening 118 has a radius bigger than a radius of thevibration head 24 and is configured to slide over thevibration head 24. Thecentral opening 118 of the cross-clamp 116 is moveable along thevibration head 24 to position thesubmergible screed rods 14 relative to thedistal end 36 of thevibration head 24. An initial position of the submergible screedrods 14 may depend on the depth of the concrete 40 and may change throughout the process because the air pockets move in the direction from theground 44 to thetop surface 42 of the concrete. If a large volume ofconcrete 40 is poured at once, the weight of thedeep concrete 40 may prevent the air pockets from escaping to thesurface 42 and trap the air pockets. The submergible screedrod 14 may be initially positioned close to thedistal end 36 of thevibration head 24, which will place thesubmergible screed rod 14 near theground 44 to transfer vibration at the bottom portion of the concrete to facilitate the air pockets to rise to the upper portion of the concrete. After a sweep across the bottom portion of the concrete, the submergible screedrod 14 may be repositioned on thevibration head 24 such that thesubmergible screed rod 14 is in the middle portion of the concrete to facilitate the air pockets in the middle portion to rise to thesurface 42. - The
central opening 118 further includes aslit 124 that allows thecentral opening 118 to be tightened when a desirable position of the submergible screedrods 14 on thevibration head 24 is achieved. The cross-clamp 116 is fixed by tighteningbolts 126 of theslit 124. In some embodiments, the cross-clamp may have two clamp members created by two slits in the central opening. Each clamp member includes a chamber to receive one end of thesubmergible screed rod 14. Each clamp member is coupled to thevibration head 24 by aligning two slits and tightening the bolts on each slit. - In an alternative embodiment, the
releasable clamp 16 may be atee clamp 216 as shown inFIG. 7 . Thetee clamp 216 includes two clampingmembers vibration head 24. Each clampingmember submergible screed rod 14. The vertical groove also has a generally semicircular cylindrical shape and is configured to receive thedistal end 36 of thevibration head 24. When two clampingmembers rod 14 is positioned between the two horizontal grooves of the clampingmembers rotational head 24 is positioned between the two vertical grooves of the clampingmembers tool 10 includes onesubmergible screed rod 14 that extends through thetee clamp 216. It should be appreciated that the tee clamp that are commonly used and known in the art, such as a socket tee, may be used. - Referring now to
FIGS. 8-9 , alternative embodiments of thesubmergible screed rod rod - As shown in
FIG. 8 , asubmergible screed rod 114 includes anelongated rod 130 having aprong 132 extending from afree end 134 of theelongated rod 130 towards theground 44. Theopposite end 136 of theelongated rod 130 is configured to be received in one of thereleasable clamp prong 132 defines anaxis 117 that intersects anaxis 115 of thescreed rod 114. - As discussed above, vibration of the
concrete layer 40 from the bottom to top facilitates the removal of air pockets in theconcrete layer 40. Having thedownward prong 132 ensures to transfer vibration to the bottom portion of theconcrete layer 40 to facilitate air pockets that may be otherwise trapped in the bottom of theconcrete layer 40. In some embodiments, as shown inFIG. 9 , asubmergible screed rod 214 includes anelongated body 230 having amultiple prongs 232 projecting downwardly from theelongated body 230 to theground 44. Similarly, themultiple prongs 232 facilitate to transfer vibration more evenly throughout theconcrete layer 40. Theprongs 232 each define anaxis 217 that intersects theaxis 215 of thescreed rod 214. - Although certain illustrative embodiments and graphical illustrations have been described in detail above, variations and modifications exist within the scope and spirit of this disclosure as described and as defined in the following claims.
Claims (20)
1. A vibrator assembly for consolidating concrete comprises
a power source,
a vibratory head driven by the power source, the vibratory head operable to generate mechanical oscillation, and
a submersible elongate member extending from the vibratory head, the elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete.
2. The vibrator assembly of claim 1 , wherein the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete comprises an elongate member that extends laterally from the vibratory head.
3. The vibrator assembly of claim 2 , wherein the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete is secured to a coupler securing the elongate member to the vibratory head.
4. The vibrator assembly of claim 3 , wherein the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete comprises a first elongate member that extends laterally from one side of the vibratory head.
5. The vibrator assembly of claim 4 , wherein the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete comprises a pair of elongate members that extends laterally from each side of the vibratory head.
6. The vibrator assembly of claim 3 , wherein the coupler comprises a clamp that secures an elongate member to the vibratory head.
7. The vibrator assembly of claim 3 , wherein the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete further comprises a prong that extends from an elongate member, the prong having an a length that defines an axis, the axis of the prong intersecting the axis of the elongate member.
8. The vibrator assembly of claim 7 , wherein the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete comprises a plurality of prongs that each extends from an elongate member, the prongs each having an a length that defines an axis, the axis of each prong intersecting the axis of the elongate member from which the prong extends.
9. The vibrator assembly of claim 8 , wherein the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete is submergible in uncured concrete during operation.
10. The vibrator assembly of claim 3 , wherein the coupler comprises a tee- clamp that secures an elongate member to the vibratory head.
11. The vibrator assembly of claim 10 , wherein the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete is submergible in uncured concrete during operation.
12. The vibrator assembly of claim 1 , wherein the submersible elongate member transferring the mechanical oscillation from the vibratory head to uncured concrete is submergible in uncured concrete during operation.
13. A vibrator assembly for consolidating concrete comprises
a power source,
a vibratory head driven by the power source, the vibratory head operable to generate mechanical oscillation, and
a pair of elongate rods that extend laterally from opposite sides of the vibratory head, the rods being mechanically oscillated by the vibratory head, the rods being configured to be fully submerged in uncured concrete to transfer the mechanical oscillation to the uncured concrete.
14. The vibrator assembly of claim 13 , wherein each rod comprises a prong that extends from the rod, the prong having a length that defines an axis, the axis of the prong intersecting the axis of the elongate rod.
15. The vibrator assembly of claim 14 , wherein the axis of the prong is perpendicular to the axis of the respective rod.
16. The vibrator assembly of claim 13 , wherein each rod comprises a plurality of prongs that extend from the respective rod, each prong having a length that defines an axis, the axis of each prong intersecting the axis of the elongate rod.
17. The vibrator assembly of claim 16 , wherein the axis of each prong is perpendicular to the axis of the respective rod.
18. The vibrator assembly of claim 17 , wherein the power source has a variable speed and is configured to allow a user to vary the displacement of the rods by controlling a speed input.
19. A vibrator assembly for consolidating concrete comprises
a vibratory head configured to be driven by a power source, the vibratory head operable to generate mechanical oscillation,
a coupler secured to the vibratory head, and
a pair of elongate rods secured to the coupler, the elongate rods extending laterally from opposite sides of the vibratory head, the rods each having an axis, with the axis of the two rods being generally parallel, the rods being mechanically oscillated by the vibratory head, wherein each rod comprises a plurality of prongs that extend from the respective rod, each prong having a length that defines an axis, the axis of each prong intersecting the axis of the elongate rod.
20. The vibrator assembly of claim 19 , wherein the axis of each prong is perpendicular to the axis of the respective rod the rods being configured to be fully submerged in uncured concrete to transfer the mechanical oscillation to the uncured concrete.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US15/417,451 US20170218577A1 (en) | 2016-01-29 | 2017-01-27 | Submersible vibratory head for consolidating concrete |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US201662288718P | 2016-01-29 | 2016-01-29 | |
US15/417,451 US20170218577A1 (en) | 2016-01-29 | 2017-01-27 | Submersible vibratory head for consolidating concrete |
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US20170218577A1 true US20170218577A1 (en) | 2017-08-03 |
Family
ID=59386449
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US15/417,451 Abandoned US20170218577A1 (en) | 2016-01-29 | 2017-01-27 | Submersible vibratory head for consolidating concrete |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US11162232B2 (en) | 2018-10-08 | 2021-11-02 | Ligchine International Corporation | Drive system for screeding concrete |
US11560727B2 (en) | 2018-10-08 | 2023-01-24 | Ligchine International Corporation | Apparatus for screeding concrete |
US11946208B2 (en) | 2021-02-23 | 2024-04-02 | Ligchine International Corporation | Swing boom concrete screeding apparatus |
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