US20180155882A1 - Impact wear plates for vibratory plate compactor - Google Patents
Impact wear plates for vibratory plate compactor Download PDFInfo
- Publication number
- US20180155882A1 US20180155882A1 US15/367,775 US201615367775A US2018155882A1 US 20180155882 A1 US20180155882 A1 US 20180155882A1 US 201615367775 A US201615367775 A US 201615367775A US 2018155882 A1 US2018155882 A1 US 2018155882A1
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- United States
- Prior art keywords
- plate
- vibratory
- impact wear
- compactor
- base plate
- 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.)
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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
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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
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
- E02F3/967—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of compacting-type tools
Definitions
- the present disclosure generally relates to vibratory plate compactors and, more specifically, to vibratory plate compactors having impact wear plates that absorb shock loads between upper and lower portions of the compactor.
- Vibratory plate compactors may be used to compact and flatten a work surface such as soil, gravel, asphalt, or other work surfaces.
- a vibratory plate compactor may be manually operated, or may be an attachment on a larger, operator-controlled host machine such as an excavator, a mini-excavator, a backhoe, or a skid steer. When attached to a machine, the vibratory plate compactor may be attached to a free end of a boom that may be rotated, raised, or lowered to position the vibratory plate compactor on a selected work surface.
- a vibratory plate compactor may include an upper portion having an upper yoke, and a lower portion having a base plate that contacts the work surface and vibrates to compact the work surface.
- a vibration mechanism that includes an eccentric mass may be associated with the base plate to cause vibration of the base plate.
- the vibratory plate compactor may further include isolator mounts connected between the upper portion and the lower portion of the compactor.
- the isolator mounts may include an elastomeric material absorbs vibrations to prevent the transmission of vibrations to the host machine.
- the upper yoke of the vibratory plate may include legs having bottom surfaces that may strike the base plate as a downward force is applied on the compactor from the host machine. This may lead to wear at both the base plate and the upper yoke where contacts are made.
- metal “feet” may be attached to the bottom surfaces of the yoke that strikes the base plate. While effective, the metal-metal contacts between the metal feet and the base plate may result in gouges, rust, and/or paint chipping at both the metal feet and the base plate where strikes occur.
- German Patent Number DE10355172B3 discloses a compressor device for attachment to an excavator, wherein the compressor device includes an upper part, a lower part having a compressor plate, and a damping means interconnected between the upper part and the lower part to reduce the transmission of vibrations to the excavator.
- the compressor device does not include a mechanism for protecting the upper part and the compressor plate from damage when strikes occur between portions of the upper part and the compressor plate.
- a vibratory plate compactor may comprise a base plate configured to vibrate and compact a work surface, and an upper yoke having at least one leg with a bottom surface disposed above and facing the base plate.
- the vibratory plate compactor may comprise an impact wear plate affixed to the bottom surface of the at least one leg of the upper yoke.
- the impact wear plate may be unattached to the base plate, and may be at least partially formed from a non-metallic material.
- a machine may comprise an internal combustion engine, an undercarriage supporting tracks or wheels, a boom, and a vibratory plate compactor coupled to an end of the boom.
- the vibratory plate compactor may include a lower portion having a base plate, and a vibratory mechanism configured to vibrate the base plate.
- the vibratory plate compactor may further include an upper portion having an upper yoke with a plurality of legs each having bottom surfaces facing the base plate.
- the machine may further comprise a plurality of impact wear plates each affixed to the bottom surface of a respective one of the legs of the upper yoke.
- the impact wear plates may be formed from a non-metallic material.
- a machine configured to compact a work surface.
- the machine may comprise an internal combustion engine, an undercarriage supporting tracks or wheels, a rotatable turntable configured to rotate with respect to the undercarriage, and a boom connected to the rotatable turntable.
- the machine may further comprise a vibratory plate compactor coupled to an end of the boom.
- the vibratory plate compactor may include a base plate, and a vibratory mechanism operatively associated with the base plate and configured to vibrate the base plate.
- the vibratory plate compactor may further comprise an upper yoke with at least one leg having a bottom surface facing the base plate, a metal backing plate affixed to the bottom surface of the leg, and an impact wear plate affixed to the metal backing plate.
- the impact wear plate may be formed from a wear-resistant material.
- FIG. 1 is a perspective view of a machine having a vibratory plate compactor, constructed in accordance with the present disclosure.
- FIG. 2 is an exploded view of the vibratory plate compactor of FIG. 1 with some components removed for clarity, constructed in accordance with the present disclosure.
- FIG. 3 is a side view of the vibratory plate compactor, illustrating impact wear plates attached to an upper yoke of the compactor, constructed in accordance with the present disclosure.
- FIG. 4 is a side view similar to FIG. 3 , but with the impact wear plates being attached to the upper yoke with backing plates, constructed in accordance with the present disclosure.
- FIG. 5 is a flowchart of a series of steps that may be involved in installing the impact wear plates on the vibratory plate compactor, in accordance with a method of the present disclosure.
- the vibratory plate compactor 12 may be used to compact and flatten a work surface 14 which may include soil, asphalt, gravel, or other compactable materials.
- the machine 10 may be an excavator, a mini-excavator, a backhoe, a skid steer, as well as other types of machines that may be fitted with a vibratory plate compactor.
- the vibratory plate compactor 12 may be separate from the machine 10 and may be manually operated, as will be understood by those with ordinary skill in the art.
- the machine 10 may include an internal combustion engine 16 (or a motor, such as an electric motor) for powering the machine 10 , an undercarriage 18 supporting tracks 20 (or wheels) for driving the movement of the machine 10 , and an operator cab 22 .
- the machine 10 may be unmanned and may lack an operator cab.
- a rotatable turntable 24 may support the internal combustion engine 16 and the operator cab 22 and may be rotatable with respect to the undercarriage 18 .
- Connected to the turntable 24 may be a boom 26 having linkage members 28 that are raised and lowered with hydraulic cylinders 30 .
- a coupling device 32 may couple a free end 34 of the boom 26 to the vibratory plate compactor 12 , as shown.
- the vibratory plate compactor 12 may include an upper portion 36 having an upper yoke 38 , and a lower portion 40 having a base plate 42 that vibrates to compact the work surface 14 .
- Both the upper yoke 38 and the base plate 42 may be formed from or may include a metallic material such as a pure metal or a metal alloy.
- the lower portion 40 may also include a vibratory mechanism 44 having an eccentric mass 46 (see FIG. 2 ) that may rotate on a shaft to cause vibration of the base plate 42 .
- Isolator mounts 48 may interconnect the upper portion 36 and the lower portion 40 , and may dampen vibrations from the base plate 42 to the upper portion 36 in order to protect the machine 10 from excessive vibrations and resulting wear. In particular, the isolator mounts 48 may be attached to both the upper portion 36 and the lower portion 40 of the compactor 12 .
- Attached to the base plate 42 may be a housing 50 that houses the vibratory mechanism 44 .
- the vibratory mechanism 44 may include the eccentric mass 46 , and a vibratory motor 52 that may drive the rotation of the shaft on which the eccentric mass 46 is mounted to cause vibration of the base plate 42 .
- the vibratory motor 52 may be a hydraulic motor powered by a hydraulic pump, or it may be an electric motor in other arrangements.
- the vibratory motor 52 may be supported in the housing 50 with bearings 54 .
- one or more support plates 56 extending substantially perpendicular to the base plate 42 may be attached to or integrally formed with the housing 50 to support the housing 50 on the base plate 42 . In alternative configurations, the support plates 56 may be angled with respect to the base plate, or the lower portion 40 may lack the support plates 56 .
- the upper yoke 38 may include one or more legs 58 that may extend substantially perpendicular to the base plate 42 . In alternative configurations, the legs 58 may be angled with respect to the base plate 42 . When the compactor 12 is assembled, the housing 50 and the support plates 56 may be disposed between the legs 58 (see FIG. 1 ). In one arrangement, the upper yoke 38 may have four legs 58 , although it may have more or less legs in other configurations. Each of the legs 58 may have a bottom surface 60 that is disposed above and faces the base plate 42 when the compactor 12 is assembled. As explained in further detail below, the bottom surfaces 60 of the legs 58 may be poised to strike the base plate 42 when the base plate 42 is vibrating and a downward force is imposed on the compactor 12 .
- the isolator mounts 48 may be attached to the support plates 56 of the lower portion 40 , and to inner surfaces 62 of the legs 58 of the upper portion 36 . More specifically, each of the isolator mounts 48 may have two mounting plates 64 , with one of the mounting plates 64 being attached to one of the support plates 56 of the lower portion 40 , and the other mounting plate 64 being attached to the inner surface 62 of one of the legs 58 of the upper portion 36 . In one arrangement, the mounting plates 64 may be bolted to the support plates 56 and the legs 58 using mechanical fasteners (e.g., bolts, rivets, etc.).
- mechanical fasteners e.g., bolts, rivets, etc.
- the mounting plates 64 may be attached to the support plates 56 and the legs 58 by other methods apparent to those skilled in the art such as, but not limited to, adhesive bonding, welding, or brazing. Between the two mounting plates 64 of each of the isolator mounts 48 may be a damping portion 66 formed from an elastomeric material capable of absorbing vibrational loads, such as natural rubber or a synthetic rubber. Although four isolator mounts 48 are shown in FIG. 2 , the compactor 12 may have more or less isolator mounts in alternative configurations. In addition, in alternative arrangements, the isolator mounts 48 may be directly connected to the housing 50 of the lower portion 40 and/or to other portions of the upper yoke 38 .
- Affixed to the bottom surfaces 60 of one or more of the legs 58 of the upper yoke 38 may be impact wear plates 68 that absorb shock loads and prevent damage to the base plate 42 and the upper yoke 38 when strikes occur.
- each of the legs 58 of the upper yoke 38 may have one of the impact wear plates 68 affixed thereto.
- the impact wear plates 68 may be formed from, or at least partially formed from, a wear-resistant and resilient material that resists damage when the upper yoke 38 and the base plate 42 strike each other. When damaged with extended use, however, the wear plates 68 may be removed and replaced with new wear plates.
- the impact wear plates 68 may provide a hard stop that may limit the amount of movement of the base plate 42 to avoid overstressing the isolator mounts 48 .
- the impact wear plates 68 may be partially or fully formed from a non-metallic material.
- the impact wear plates 68 may include or may be formed from one or more wear-resistant and/or elastomeric polymeric materials such as, but not limited to, polyurethane and natural rubber.
- suitable non-metallic polymeric materials may include, but are not limited to, polyimides, polyamides, polytetrafluoroethylene, a polypropylene/butyl rubber blend, a polyvinylchloride/chlorinated polyethylene/epoxidized natural rubber blend, polysulfones, and synthetic rubbers such as silicone rubbers, ethylene propylene diene monomer (EPDM) rubber, polychloroprene, and acrylic rubber.
- EPDM ethylene propylene diene monomer
- the impact wear plates 68 may be formed from or may include vibration damping metals such as shape memory alloys (SMAs) or ferromagnetic alloys.
- SMAs shape memory alloys
- ferromagnetic alloys examples include, but are not limited to, copper-aluminum-nickel alloys, nickel-titanium alloys, or alloys of zinc, copper, gold, and iron.
- the impact wear plates 68 may be formed from or may include soft metals such as aluminum, copper, brass, bronze, lead, gold, silver, tin, and zinc. Combinations of the aforementioned non-metallic materials and metallic materials may also be used in some circumstances.
- the impact wear plates 68 may have a bent configuration that is complementary to the bent geometries of the bottom surface 60 and the base plate 42 as shown in FIG. 2 .
- the impact wear plates 68 may have a flat geometry for attachment to the flat portion of the bottom surface 60 .
- the impact wear plates 68 may be directly affixed to the bottom surfaces 60 of the legs 58 by adhesive bonding or by mechanical fastening with one or more mechanical fasteners (e.g., bolts, rivets, etc.), as will be understood by those with ordinary skill in the art.
- the impact wear plates 68 may include one or more threaded or unthreaded apertures for insertion of the mechanical fastener(s) through the wear plates 68 . If the impact wear plates 68 include metallic materials, metal bonding methods such as welding or brazing may also be used to affix the impact wear plates 68 to the bottom surfaces 60 .
- the impact wear plates 68 may each be affixed to one or more backing plates 70 , and the assembly of the impact wear plate 68 and the backing plate 70 may be affixed to the bottom surface 60 with the backing plate 70 making direct contact with the bottom surface 60 (see FIG. 4 ). More specifically, the impact wear plate 68 may be affixed to the backing plate 70 (e.g., by adhesive bonding, mechanical fastening, welding, brazing, etc.), and the impact wear plate 68 /backing plate 70 assembly may be affixed to the bottom surface 60 (e.g., by adhesive bonding, mechanical fastening, welding, brazing, etc.).
- one or both of the impact wear plate 68 and the backing plate 70 may include threaded or unthreaded apertures for insertion of the mechanical fastener(s) therethrough.
- the backing plate 70 may be formed from a metallic material such as steel, although other metals and metal alloys may also be used.
- the impact wear plate 68 may have a thickness ranging from about 30 millimeters (mm) to about 100 mm, and a length ranging from about 100 mm to about 500 mm. However, the wear plate 68 may have dimensions deviating from these ranges depending on the size of the machine 10 and/or the identity of the material making up the wear plate 68 .
- teachings of the present disclosure may find broad applicability in many industries including, but not limited to, construction, agriculture, and road maintenance industries. More specifically, the present disclosure may find applicability in any industry using machines or equipment that include a vibratory plate compactor.
- the impact wear plate 68 may be provided in dimensions appropriate for the size of the machine 10 .
- the impact wear plate 68 may be directly affixed to the bottom surface 60 of one of the legs 58 of the upper yoke 38 using a suitable method apparent to those with ordinary skill in the art such as, but not limited to, adhesive bonding, mechanical fastening, welding, or brazing.
- the impact wear plate 68 may be affixed to the backing plate 70 such as by adhesive bonding, mechanical fastening, welding, or brazing (block 84 ).
- the impact wear plate 68 assembled with the backing plate 70 may then be affixed to the bottom surface 60 with the backing plate 70 making direct contact with the bottom surface 60 (block 86 ).
- the assembly of the impact wear plate 68 and the backing plate 70 may be affixed to the bottom surface 60 using any suitable method such as, but not limited to, adhesive bonding, mechanical fastening, welding, and brazing.
- the backing plate 70 may be first affixed to the bottom surface 60 , and the impact wear plate 68 may be subsequently affixed to the backing plate 70 .
- the installation of the impact wear plates 68 on the compactor 12 as described above may be repeated as needed to affix an impact wear plate 68 to each of the legs 58 of the upper yoke 38 .
- the base plate 42 may vibrate to compact the work surface 14 .
- the base plate 42 and the upper yoke 38 may strike each other, and the impact wear plates 68 may absorb at least some of the shock loads to protect the base plate 42 and the upper yoke 38 from wear.
- the impact wear plates 68 may become worn or damaged, and may be replaced according to an optional block 88 .
- the impact wear plates disclosed herein may be affixed to the upper portion of the vibratory plate compactor to absorb shock loads upon impact between the upper portion and the lower portion of the compactor during use. More specifically, the impact wear plates may be affixed to the bottom surfaces of the upper yoke legs that tend to strike the base plate 42 when a downward force is applied on the compactor during vibration of the base plate 42 . As opposed to metal “feet” of the prior art, the impact wear plates disclosed herein may be fabricated from a non-metallic material to avoid metal to metal contacts when strikes occur. The impact wear plates disclosed herein may prevent gouges, rust, and/or paint chipping at the upper yoke and the base plate.
- the impact wear plates may serve as a back stop when the base plate and the upper yoke strike each other, thereby limiting the stretching of the isolator mounts and protecting the isolator mounts from wear.
- the impact wear plates disclosed herein provide a serviceable item that may be readily replaced when worn down from continued use.
Abstract
A vibratory plate compactor is disclosed. The vibratory plate compactor may comprise a base plate configured to vibrate and compact a work surface, and an upper yoke having at least one leg disposed above and facing the base plate. The vibratory plate compactor may further comprise an impact wear plate affixed to the bottom surface of the at least one leg. The impact wear plate may be unattached to the base plate, and may be at least partially formed from a non-metallic material.
Description
- The present disclosure generally relates to vibratory plate compactors and, more specifically, to vibratory plate compactors having impact wear plates that absorb shock loads between upper and lower portions of the compactor.
- Vibratory plate compactors may be used to compact and flatten a work surface such as soil, gravel, asphalt, or other work surfaces. A vibratory plate compactor may be manually operated, or may be an attachment on a larger, operator-controlled host machine such as an excavator, a mini-excavator, a backhoe, or a skid steer. When attached to a machine, the vibratory plate compactor may be attached to a free end of a boom that may be rotated, raised, or lowered to position the vibratory plate compactor on a selected work surface. A vibratory plate compactor may include an upper portion having an upper yoke, and a lower portion having a base plate that contacts the work surface and vibrates to compact the work surface. A vibration mechanism that includes an eccentric mass may be associated with the base plate to cause vibration of the base plate. To dampen vibrations from the base plate to the upper yoke, the vibratory plate compactor may further include isolator mounts connected between the upper portion and the lower portion of the compactor. The isolator mounts may include an elastomeric material absorbs vibrations to prevent the transmission of vibrations to the host machine.
- The upper yoke of the vibratory plate or may include legs having bottom surfaces that may strike the base plate as a downward force is applied on the compactor from the host machine. This may lead to wear at both the base plate and the upper yoke where contacts are made. To protect the legs of the upper yoke from damage, metal “feet” may be attached to the bottom surfaces of the yoke that strikes the base plate. While effective, the metal-metal contacts between the metal feet and the base plate may result in gouges, rust, and/or paint chipping at both the metal feet and the base plate where strikes occur.
- German Patent Number DE10355172B3 discloses a compressor device for attachment to an excavator, wherein the compressor device includes an upper part, a lower part having a compressor plate, and a damping means interconnected between the upper part and the lower part to reduce the transmission of vibrations to the excavator. However, the compressor device does not include a mechanism for protecting the upper part and the compressor plate from damage when strikes occur between portions of the upper part and the compressor plate.
- Thus, there is a need for improved strategies for protecting the upper yoke and the lower base plate of vibratory plate compactors from wear.
- In accordance with one aspect of the present disclosure, a vibratory plate compactor is disclosed. The vibratory plate compactor may comprise a base plate configured to vibrate and compact a work surface, and an upper yoke having at least one leg with a bottom surface disposed above and facing the base plate. In addition, the vibratory plate compactor may comprise an impact wear plate affixed to the bottom surface of the at least one leg of the upper yoke. The impact wear plate may be unattached to the base plate, and may be at least partially formed from a non-metallic material.
- In accordance with another aspect of the present disclosure, a machine is disclosed. The machine may comprise an internal combustion engine, an undercarriage supporting tracks or wheels, a boom, and a vibratory plate compactor coupled to an end of the boom. The vibratory plate compactor may include a lower portion having a base plate, and a vibratory mechanism configured to vibrate the base plate. The vibratory plate compactor may further include an upper portion having an upper yoke with a plurality of legs each having bottom surfaces facing the base plate. The machine may further comprise a plurality of impact wear plates each affixed to the bottom surface of a respective one of the legs of the upper yoke. The impact wear plates may be formed from a non-metallic material.
- In accordance with another aspect of the present disclosure, a machine configured to compact a work surface is disclosed. The machine may comprise an internal combustion engine, an undercarriage supporting tracks or wheels, a rotatable turntable configured to rotate with respect to the undercarriage, and a boom connected to the rotatable turntable. The machine may further comprise a vibratory plate compactor coupled to an end of the boom. The vibratory plate compactor may include a base plate, and a vibratory mechanism operatively associated with the base plate and configured to vibrate the base plate. The vibratory plate compactor may further comprise an upper yoke with at least one leg having a bottom surface facing the base plate, a metal backing plate affixed to the bottom surface of the leg, and an impact wear plate affixed to the metal backing plate. The impact wear plate may be formed from a wear-resistant material.
- These and other aspects and features of the present disclosure will be more readily understood when read in conjunction with the accompanying drawings.
-
FIG. 1 is a perspective view of a machine having a vibratory plate compactor, constructed in accordance with the present disclosure. -
FIG. 2 is an exploded view of the vibratory plate compactor ofFIG. 1 with some components removed for clarity, constructed in accordance with the present disclosure. -
FIG. 3 is a side view of the vibratory plate compactor, illustrating impact wear plates attached to an upper yoke of the compactor, constructed in accordance with the present disclosure. -
FIG. 4 is a side view similar toFIG. 3 , but with the impact wear plates being attached to the upper yoke with backing plates, constructed in accordance with the present disclosure. -
FIG. 5 is a flowchart of a series of steps that may be involved in installing the impact wear plates on the vibratory plate compactor, in accordance with a method of the present disclosure. - Referring now to the drawings, and with specific reference to
FIG. 1 , amachine 10 having avibratory plate compactor 12 is shown. Thevibratory plate compactor 12 may be used to compact and flatten awork surface 14 which may include soil, asphalt, gravel, or other compactable materials. As non-limiting examples, themachine 10 may be an excavator, a mini-excavator, a backhoe, a skid steer, as well as other types of machines that may be fitted with a vibratory plate compactor. Alternatively, thevibratory plate compactor 12 may be separate from themachine 10 and may be manually operated, as will be understood by those with ordinary skill in the art. - The
machine 10 may include an internal combustion engine 16 (or a motor, such as an electric motor) for powering themachine 10, anundercarriage 18 supporting tracks 20 (or wheels) for driving the movement of themachine 10, and anoperator cab 22. In alternative arrangements, themachine 10 may be unmanned and may lack an operator cab. Arotatable turntable 24 may support theinternal combustion engine 16 and theoperator cab 22 and may be rotatable with respect to theundercarriage 18. Connected to theturntable 24 may be aboom 26 havinglinkage members 28 that are raised and lowered withhydraulic cylinders 30. Acoupling device 32 may couple afree end 34 of theboom 26 to thevibratory plate compactor 12, as shown. - The
vibratory plate compactor 12 may include anupper portion 36 having anupper yoke 38, and alower portion 40 having abase plate 42 that vibrates to compact thework surface 14. Both theupper yoke 38 and thebase plate 42 may be formed from or may include a metallic material such as a pure metal or a metal alloy. Thelower portion 40 may also include avibratory mechanism 44 having an eccentric mass 46 (seeFIG. 2 ) that may rotate on a shaft to cause vibration of thebase plate 42.Isolator mounts 48 may interconnect theupper portion 36 and thelower portion 40, and may dampen vibrations from thebase plate 42 to theupper portion 36 in order to protect themachine 10 from excessive vibrations and resulting wear. In particular, theisolator mounts 48 may be attached to both theupper portion 36 and thelower portion 40 of thecompactor 12. - Turning now to
FIG. 2 , some of the components of thevibratory plate compactor 12 are shown in further detail. Attached to thebase plate 42 may be ahousing 50 that houses thevibratory mechanism 44. Specifically, thevibratory mechanism 44 may include theeccentric mass 46, and avibratory motor 52 that may drive the rotation of the shaft on which theeccentric mass 46 is mounted to cause vibration of thebase plate 42. Thevibratory motor 52 may be a hydraulic motor powered by a hydraulic pump, or it may be an electric motor in other arrangements. Thevibratory motor 52 may be supported in thehousing 50 withbearings 54. In addition, one ormore support plates 56 extending substantially perpendicular to thebase plate 42 may be attached to or integrally formed with thehousing 50 to support thehousing 50 on thebase plate 42. In alternative configurations, thesupport plates 56 may be angled with respect to the base plate, or thelower portion 40 may lack thesupport plates 56. - The
upper yoke 38 may include one ormore legs 58 that may extend substantially perpendicular to thebase plate 42. In alternative configurations, thelegs 58 may be angled with respect to thebase plate 42. When thecompactor 12 is assembled, thehousing 50 and thesupport plates 56 may be disposed between the legs 58 (seeFIG. 1 ). In one arrangement, theupper yoke 38 may have fourlegs 58, although it may have more or less legs in other configurations. Each of thelegs 58 may have abottom surface 60 that is disposed above and faces thebase plate 42 when thecompactor 12 is assembled. As explained in further detail below, the bottom surfaces 60 of thelegs 58 may be poised to strike thebase plate 42 when thebase plate 42 is vibrating and a downward force is imposed on thecompactor 12. - The isolator mounts 48 may be attached to the
support plates 56 of thelower portion 40, and toinner surfaces 62 of thelegs 58 of theupper portion 36. More specifically, each of the isolator mounts 48 may have two mountingplates 64, with one of the mountingplates 64 being attached to one of thesupport plates 56 of thelower portion 40, and the other mountingplate 64 being attached to theinner surface 62 of one of thelegs 58 of theupper portion 36. In one arrangement, the mountingplates 64 may be bolted to thesupport plates 56 and thelegs 58 using mechanical fasteners (e.g., bolts, rivets, etc.). In other arrangements, the mountingplates 64 may be attached to thesupport plates 56 and thelegs 58 by other methods apparent to those skilled in the art such as, but not limited to, adhesive bonding, welding, or brazing. Between the two mountingplates 64 of each of the isolator mounts 48 may be a dampingportion 66 formed from an elastomeric material capable of absorbing vibrational loads, such as natural rubber or a synthetic rubber. Although four isolator mounts 48 are shown inFIG. 2 , thecompactor 12 may have more or less isolator mounts in alternative configurations. In addition, in alternative arrangements, the isolator mounts 48 may be directly connected to thehousing 50 of thelower portion 40 and/or to other portions of theupper yoke 38. - Affixed to the bottom surfaces 60 of one or more of the
legs 58 of theupper yoke 38 may be impact wearplates 68 that absorb shock loads and prevent damage to thebase plate 42 and theupper yoke 38 when strikes occur. As one possibility, each of thelegs 58 of theupper yoke 38 may have one of the impact wearplates 68 affixed thereto. As explained in further detail below, the impact wearplates 68 may be formed from, or at least partially formed from, a wear-resistant and resilient material that resists damage when theupper yoke 38 and thebase plate 42 strike each other. When damaged with extended use, however, thewear plates 68 may be removed and replaced with new wear plates. Moreover, the impact wearplates 68 may provide a hard stop that may limit the amount of movement of thebase plate 42 to avoid overstressing the isolator mounts 48. - The
impact wear plates 68 may be partially or fully formed from a non-metallic material. For example, the impact wearplates 68 may include or may be formed from one or more wear-resistant and/or elastomeric polymeric materials such as, but not limited to, polyurethane and natural rubber. Other suitable non-metallic polymeric materials may include, but are not limited to, polyimides, polyamides, polytetrafluoroethylene, a polypropylene/butyl rubber blend, a polyvinylchloride/chlorinated polyethylene/epoxidized natural rubber blend, polysulfones, and synthetic rubbers such as silicone rubbers, ethylene propylene diene monomer (EPDM) rubber, polychloroprene, and acrylic rubber. - Alternatively, the impact wear
plates 68 may be formed from or may include vibration damping metals such as shape memory alloys (SMAs) or ferromagnetic alloys. Examples of SMAs may include, but are not limited to, copper-aluminum-nickel alloys, nickel-titanium alloys, or alloys of zinc, copper, gold, and iron. As other possibilities, the impact wearplates 68 may be formed from or may include soft metals such as aluminum, copper, brass, bronze, lead, gold, silver, tin, and zinc. Combinations of the aforementioned non-metallic materials and metallic materials may also be used in some circumstances. - The
impact wear plates 68 may have a bent configuration that is complementary to the bent geometries of thebottom surface 60 and thebase plate 42 as shown inFIG. 2 . Alternatively, as shown inFIG. 3 , the impact wearplates 68 may have a flat geometry for attachment to the flat portion of thebottom surface 60. Theimpact wear plates 68 may be directly affixed to the bottom surfaces 60 of thelegs 58 by adhesive bonding or by mechanical fastening with one or more mechanical fasteners (e.g., bolts, rivets, etc.), as will be understood by those with ordinary skill in the art. If attached with mechanical fasteners, the impact wearplates 68 may include one or more threaded or unthreaded apertures for insertion of the mechanical fastener(s) through thewear plates 68. If the impact wearplates 68 include metallic materials, metal bonding methods such as welding or brazing may also be used to affix the impact wearplates 68 to the bottom surfaces 60. - Alternatively, the impact wear
plates 68 may each be affixed to one ormore backing plates 70, and the assembly of theimpact wear plate 68 and thebacking plate 70 may be affixed to thebottom surface 60 with thebacking plate 70 making direct contact with the bottom surface 60 (seeFIG. 4 ). More specifically, theimpact wear plate 68 may be affixed to the backing plate 70 (e.g., by adhesive bonding, mechanical fastening, welding, brazing, etc.), and theimpact wear plate 68/backing plate 70 assembly may be affixed to the bottom surface 60 (e.g., by adhesive bonding, mechanical fastening, welding, brazing, etc.). If mechanical fastening is used, one or both of theimpact wear plate 68 and thebacking plate 70 may include threaded or unthreaded apertures for insertion of the mechanical fastener(s) therethrough. Thebacking plate 70 may be formed from a metallic material such as steel, although other metals and metal alloys may also be used. - The impact wear
plate 68 may have a thickness ranging from about 30 millimeters (mm) to about 100 mm, and a length ranging from about 100 mm to about 500 mm. However, thewear plate 68 may have dimensions deviating from these ranges depending on the size of themachine 10 and/or the identity of the material making up thewear plate 68. - In general, the teachings of the present disclosure may find broad applicability in many industries including, but not limited to, construction, agriculture, and road maintenance industries. More specifically, the present disclosure may find applicability in any industry using machines or equipment that include a vibratory plate compactor.
- Referring to
FIG. 5 , a series of steps that may be involved in installing theimpact wear plate 68 on thevibratory plate compactor 12 are shown. Beginning with afirst block 80, theimpact wear plate 68 may be provided in dimensions appropriate for the size of themachine 10. According to anext block 82, theimpact wear plate 68 may be directly affixed to thebottom surface 60 of one of thelegs 58 of theupper yoke 38 using a suitable method apparent to those with ordinary skill in the art such as, but not limited to, adhesive bonding, mechanical fastening, welding, or brazing. Alternatively, theimpact wear plate 68 may be affixed to thebacking plate 70 such as by adhesive bonding, mechanical fastening, welding, or brazing (block 84). The impact wearplate 68 assembled with thebacking plate 70 may then be affixed to thebottom surface 60 with thebacking plate 70 making direct contact with the bottom surface 60 (block 86). The assembly of theimpact wear plate 68 and thebacking plate 70 may be affixed to thebottom surface 60 using any suitable method such as, but not limited to, adhesive bonding, mechanical fastening, welding, and brazing. In other arrangements, thebacking plate 70 may be first affixed to thebottom surface 60, and theimpact wear plate 68 may be subsequently affixed to thebacking plate 70. The installation of the impact wearplates 68 on thecompactor 12 as described above may be repeated as needed to affix animpact wear plate 68 to each of thelegs 58 of theupper yoke 38. - During use of the
vibratory plate compactor 12, thebase plate 42 may vibrate to compact thework surface 14. When downward forces are applied on thecompactor 12, thebase plate 42 and theupper yoke 38 may strike each other, and the impact wearplates 68 may absorb at least some of the shock loads to protect thebase plate 42 and theupper yoke 38 from wear. With continued use, the impact wearplates 68 may become worn or damaged, and may be replaced according to anoptional block 88. - The impact wear plates disclosed herein may be affixed to the upper portion of the vibratory plate compactor to absorb shock loads upon impact between the upper portion and the lower portion of the compactor during use. More specifically, the impact wear plates may be affixed to the bottom surfaces of the upper yoke legs that tend to strike the
base plate 42 when a downward force is applied on the compactor during vibration of thebase plate 42. As opposed to metal “feet” of the prior art, the impact wear plates disclosed herein may be fabricated from a non-metallic material to avoid metal to metal contacts when strikes occur. The impact wear plates disclosed herein may prevent gouges, rust, and/or paint chipping at the upper yoke and the base plate. Further, the impact wear plates may serve as a back stop when the base plate and the upper yoke strike each other, thereby limiting the stretching of the isolator mounts and protecting the isolator mounts from wear. The impact wear plates disclosed herein provide a serviceable item that may be readily replaced when worn down from continued use. - It is expected that the technology disclosed herein may find wide industrial applicability in a wide range of areas such as, but not limited to, construction, road construction, building, agriculture, and earth-moving equipment applications.
Claims (20)
1. A vibratory plate compactor, comprising:
a base plate configured to vibrate and compact a work surface;
an upper yoke having at least one leg with a bottom surface disposed above and facing the base plate; and
an impact wear plate affixed to the bottom surface of the at least one leg, the impact wear plate being unattached to the base plate and being at least partially formed from a non-metallic material.
2. The vibratory plate compactor of claim 1 , wherein the upper yoke includes a plurality of the legs, and a plurality of the impact wear plates each affixed to the bottom surface of a respective one of the legs.
3. The vibratory plate compactor of claim 1 , wherein the non-metallic material is polyurethane.
4. The vibratory plate compactor of claim 1 , wherein the non-metallic material is natural rubber.
5. The vibratory plate compactor of claim 1 , wherein the non-metallic material is selected from natural rubber and a synthetic rubber.
6. The vibratory plate compactor of claim 1 , wherein the impact wear plate is adhesively bonded to the bottom surface of the leg.
7. The vibratory plate compactor of claim 1 , wherein the impact wear plate is mechanically fastened to the bottom surface of the leg.
8. The vibratory plate compactor of claim 1 , wherein the impact wear plate is affixed to a backing plate, and wherein the impact wear plate and the backing plate are affixed to the bottom surface with the backing plate contacting the bottom surface.
9. The vibratory plate compactor of claim 1 , wherein the impact wear plate has a thickness ranging from about 30 millimeters (mm) to about 100 mm.
10. The vibratory plate compactor of claim 9 , wherein the impact wear plate has a length ranging from about 100 mm to about 500 mm.
11. A machine, comprising:
an internal combustion engine;
an undercarriage supporting tracks or wheels;
a boom;
a vibratory plate compactor coupled to an end of the boom, the vibratory plate compactor including a lower portion having a base plate and a vibratory mechanism configured to vibrate the base plate, the vibratory plate compactor further including an upper portion having an upper yoke with a plurality of legs each having bottom surfaces facing the base plate; and
a plurality of impact wear plates each affixed to the bottom surface of a respective one of the legs of the upper yoke, the impact wear plates being unattached to the base plate and being formed from a non-metallic material.
12. The machine of claim 11 , wherein the non-metallic material is polyurethane.
13. The machine of claim 11 , wherein the non-metallic material is selected from natural rubber and a synthetic rubber.
14. The machine of claim 11 , wherein each of the impact wear plates are adhesively bonded to a respective one of the legs.
15. The machine of claim 11 , wherein each of the impact wear plates are mechanically fastened to a respective one of the legs.
16. The machine of claim 11 , wherein each of the impact wear plates are adhesively bonded to a backing plate, and wherein the impact wear plate and the backing plate are affixed to the bottom surface by adhesive bonding or mechanical fastening.
17. The machine of claim 11 , wherein the machine further comprises a plurality of isolator mounts interconnecting the upper portion and the lower portion of the vibratory plate compactor, each of the isolator mounts being affixed to both the upper portion and the lower portion, the isolator mounts being configured to dampen vibrations from the lower portion to the upper portion.
18. The machine of claim 17 , wherein each of the isolator mounts includes a damping portion formed from an elastomeric material.
19. The machine of claim 18 , wherein the lower portion includes support plates extending substantially perpendicular to the base plate, and wherein each of the isolator mounts are affixed to one of the support plates and one of the legs of the upper yoke.
20. A machine configured to compact a work surface, comprising:
an internal combustion engine;
an undercarriage supporting tracks or wheels;
a rotatable turntable configured to rotate with respect to the undercarriage;
a boom connected to the rotatable turntable;
a vibratory plate compactor coupled to an end of the boom, the vibratory plate compactor including a base plate and a vibratory mechanism operatively associated with the base plate and configured to vibrate the base plate, the vibratory plate compactor further comprising an upper yoke with at least one leg having a bottom surface facing the base plate;
a metal backing plate affixed to the bottom surface of the leg; and
an impact wear plate affixed to the metal backing plate, the impact wear plate being unattached to the base plate and being formed from a wear-resistant material.
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US15/367,775 US9988770B1 (en) | 2016-12-02 | 2016-12-02 | Impact wear plates for vibratory plate compactor |
Applications Claiming Priority (1)
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US15/367,775 US9988770B1 (en) | 2016-12-02 | 2016-12-02 | Impact wear plates for vibratory plate compactor |
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US9988770B1 US9988770B1 (en) | 2018-06-05 |
US20180155882A1 true US20180155882A1 (en) | 2018-06-07 |
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Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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SE541862C2 (en) * | 2016-04-29 | 2019-12-27 | Construction Tools Pc Ab | Rig mounted compactor |
CN110777617B (en) * | 2019-11-14 | 2021-06-01 | 蒋孝领 | Convenient type rammer compactor is used in highway construction |
US11447922B2 (en) | 2019-11-21 | 2022-09-20 | Albert Ben Currey | Vibratory compactor |
US10738434B1 (en) | 2019-11-21 | 2020-08-11 | Albert Ben Currey | Vibratory compactor |
US11773556B2 (en) | 2019-11-21 | 2023-10-03 | Albert Ben Currey | Vibratory compactor |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2209656A (en) * | 1937-05-19 | 1940-07-30 | Mall Arthur William | Vibrator |
US2737094A (en) | 1951-08-14 | 1956-03-06 | Jackson Vibrators | Compactor for asphaltic and other materials |
CH382210A (en) * | 1960-04-05 | 1964-09-30 | H Brigel Juerg | Mobile machine to compact the substructure and superstructure of roads |
US3508476A (en) * | 1967-08-30 | 1970-04-28 | Barber Greene Co | Method and apparatus for towing and suspending a compactor from a paver |
US4698926A (en) * | 1986-05-22 | 1987-10-13 | Felco Industries, Ltd. | Hydraulic excavator and compactor bucket therefor |
GB2289490A (en) | 1994-05-20 | 1995-11-22 | Mawsley Machinery Ltd | Vibratory compaction apparatus |
DE29500811U1 (en) | 1995-01-19 | 1995-03-02 | Humme Thomas | Earth compactor |
DE19629324C1 (en) * | 1996-07-20 | 1997-10-16 | Wacker Werke Kg | Vibration plate with floor contact plate |
DE10355172B3 (en) | 2003-11-26 | 2005-06-02 | MTS Gesellschaft für Maschinentechnik und Sonderbauten mbH | Compressor device of an excavator |
GB0715013D0 (en) * | 2007-08-02 | 2007-09-12 | Evolution Power Tools Ltd | Compactor |
DE102008006889C5 (en) | 2008-01-31 | 2018-09-13 | Mts Maschinentechnik Schrode Ag | compressor device |
DE102011104269A1 (en) * | 2011-06-15 | 2012-12-20 | Wacker Neuson Produktion GmbH & Co. KG | Guide bar with energy storage |
CN202610789U (en) | 2012-04-28 | 2012-12-19 | 安徽惊天液压智控股份有限公司 | Hydraulic vibrating tamper |
US9677240B2 (en) * | 2012-09-05 | 2017-06-13 | M-B-W Inc. | Single direction vibratory plate |
US9284695B2 (en) * | 2014-05-14 | 2016-03-15 | Paul David Dulieu | Protective pad assembly for use with motorized compactor |
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2016
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