WO2010114545A1 - Scie à béton alimentée par batterie - Google Patents

Scie à béton alimentée par batterie Download PDF

Info

Publication number
WO2010114545A1
WO2010114545A1 PCT/US2009/039267 US2009039267W WO2010114545A1 WO 2010114545 A1 WO2010114545 A1 WO 2010114545A1 US 2009039267 W US2009039267 W US 2009039267W WO 2010114545 A1 WO2010114545 A1 WO 2010114545A1
Authority
WO
WIPO (PCT)
Prior art keywords
saw
frame
concrete
electric motor
pair
Prior art date
Application number
PCT/US2009/039267
Other languages
English (en)
Inventor
Francis M. Gobright, Iv
Original Assignee
Gobright Francis M Iv
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gobright Francis M Iv filed Critical Gobright Francis M Iv
Priority to PCT/US2009/039267 priority Critical patent/WO2010114545A1/fr
Publication of WO2010114545A1 publication Critical patent/WO2010114545A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/045—Sawing grooves in walls; sawing stones from rocks; sawing machines movable on the stones to be cut

Definitions

  • This invention relates to a battery powered concrete saw for cutting concrete, asphalt and the like, etc.
  • Saws for cutting concrete, asphalt and the like, etc. are conventionally electrically powered or powered by an internal combustion engine that utilizes gasoline or diesel fuel, the latter of which cannot be used indoors due to the exhaust generated.
  • an internal combustion engine generator is conventionally used because 240 or 480 volt 3 phase power is required to operate concrete saws of about 5 horsepower or more.
  • the generator due to the exhaust generated must be operated outside and the time required to run an electrical line, which often is hundreds of feet and/or up a number of stories, can be prohibitedly expensive.
  • United States Patent 7,000,605 Due discloses a concrete engraver apparatus and method that is normally operated through a power cord that appears in the drawings to be house type 110 volt, but is also disclosed as using a battery pack. This engraver is manually moved much like a carpet vacuum cleaner and does not appear to be sufficiently heavy duty to permit use in heavy duty concrete cutting jobs.
  • Unites States Patent 4,998,775 Hollifield discloses an apparatus for precision cutting of concrete surfaces that utilizes a battery for powering a self- powered vehicle supported by a pair of spaced tracks. The necessity for spaced tracks for such a concrete cutter would result in any cutting job also being prohibitedly expensive.
  • United States Patents 4,175,788 Jacobson et al.; 4,767, 162 Reed, III; 4,824,516 Ishihara et al.; and 6,102,022 Schave.
  • An object of the present invention is to provide an improved concrete cutting saw.
  • a concrete cutting saw constructed in accordance with the present invention includes a frame having a pair of rear wheels and a pair of front wheels for facilitating movement of the saw to different locations for use and for movement during a cutting operation.
  • An electric motor of the saw is of at least 5 horsepower and is mounted by the frame.
  • the frame also has a mounting arrangement for supporting a battery pack for operating the electric motor.
  • a transmission connects the electric motor to the rear wheels to provide self-propulsion of the saw.
  • a pair of saw arbors are respectively mounted for rotation on opposite lateral sides of the frame forward of the pair of front wheels, and the saw arbors have a rotational connection to the electric motor to provide rotational driving of the saw arbors for cutting.
  • An actuator moves the front wheels upwardly and downwardly with respect to the frame to pivot the frame about the rear wheels between an upper idle position and a lower use position that permits cutting of concrete or the like with a saw blade mounted on one of the arbors.
  • a battery pack is mounted by the frame to power the electric motor.
  • the battery pack may be lead acid batteries, nickel-cadmium batteries, nickel metal hydride batteries or lithium batteries, and the electric motor preferably has about 5 to 15 horsepower, most preferably about 10 horsepower.
  • the preferred transmission is a hydraulic transmission that drives the pair of rear wheels from the electric motor that also drives the saw arbors.
  • the actuator for moving the frame upwardly and downwardly is power operated.
  • This power operated actuator includes a hydraulic cylinder for pivoting the frame between the upper idle position and the lower use position, a hydraulic pump that operates the hydraulic cylinder, and a second electric motor that powers the hydraulic pump.
  • the second electric motor has an electrical connection for powering by the battery pack supported by the frame mounting arrangement.
  • the concrete saw also includes a front guide assembly including a V- shaped guide member pivotally mounted on the frame for movement between a forwardly projecting use position and a generally vertically extending storage position.
  • a guide wheel on the vertex of the V-shaped guide member rolls along the surface being cut and provides guiding of the saw with the guide member in the forwardly projecting use position.
  • the concrete saw also includes a pair of blade guards respectively associated with the pair of saw arbors to provide protection from a saw blade mounted on either arbor.
  • FIGURE 1 is a perspective view of a concrete cutting saw constructed in accordance with the present invention.
  • FIGURE 2 is a partial view of the saw shown in a solid line indicated upper idle position and a partial phantom line indicated lower cutting position.
  • FIGURE 3 is a broken away perspective view of the concrete saw showing its components which provide the concrete cutting operation.
  • a concrete saw 10 is constructed to cut concrete, asphalt and the like as is hereinafter more fully described.
  • This concrete saw includes a housing 12 that may be fabricated from sheet metal or molded plastic, etc.
  • the concrete saw 10 as shown in Figure 3 includes a frame 14 having a pair of rear wheels 16 that are supported by an axle 18 on the frame.
  • a pair of front wheels 20 are also supported on the frame by an axle 22 as is hereinafter more fully described.
  • the rear wheels 16 and front wheels 20 cooperate to facilitate movement of the concrete saw 10 to different locations for use and for movement during a cutting operation.
  • an electric motor 24 is mounted on the frame 14 and has a rotary output 26 that drives a belt or chain 28 which drives a rotary input 29 to a hydrostatic transmission 30 that drives the rear wheel axle 18 to provide self propulsion of the saw during transport between cutting locations and during any cutting operation.
  • the frame 14 also has a mounting arrangement 32 for supporting a battery pack 34 which has a connection 36 to a controller 38 that has a connection 40 to the electric motor 24 so as to provide controlled powering of the electric motor.
  • This electric motor controlling has a variable speed with overload protection so cutting can be performed at the desired speed without motor damage.
  • the concrete saw 10 also includes a pair of saw arbors 42 respectively mounted on the frame 14 by a shaft 44 at opposite lateral sides of the saw so that concrete cutting can be performed closely adjacent the saw at either of its sides.
  • a rotational connection 46 for the saw arbors includes a pulley or sprocket 48 on the shaft 44, a belt or chain 50 trained over the pulley or sprocket 48 and another output 52 on the electric motor that drives the belt or chain 50 to provide rotation of the saw arbors 42 for cutting.
  • an actuator collectively indicated by 54 is disclosed as being power operated and pivots the front wheel axle 52 to provide raising and lowering of the front wheels 20.
  • Such movement pivots the front end of the frame 14 upwardly and downwardly about the rear wheels 16 and moves the saw arbors 42 and any saw blade 55 supported thereby between the upper idle position shown by solid line representation in Figure 2 and the lower cutting position shown by phantom line representation, as is hereinafter more fully described.
  • the actuator while preferable being power operated can also be hand operated.
  • the battery pack 34 is supported by the mounting arrangement 32 on the frame 14 in any suitable manner.
  • This battery pack may be more conventional lead acid batteries, nickel-cadmium batteries, nickel metal hydride batteries or lithium batteries.
  • the electric motor 24 that drives the rear wheel transmission 30 and the saw arbors 42 through the rotational connection 46 preferably has about 5 to 15 horsepower to provide sufficient power for most conventional concrete requiring cutting. More specifically, when fresh green concrete is being cut, a less powerful electric motor of about 5 horsepower can be sufficient. For cutting aged thick concrete with reinforcing steel bars, a more powerful electric motor is needed, but electric motors having more than about 15 horsepower can draw so much current that the battery life will be unduly shortened. Electric motors with about 10 horsepower are believed to provide a good compromise of having sufficient cutting power without drawing too much current.
  • an electric motor of about 10 horsepower that is powered by a battery pack including twelve six volt lead acid batteries connected in series for a total of 72 volts is capable of cutting for about one hour and thirty minutes through six inch thick aged concrete with 5/8 inch diameter reinforcing bars every foot and can cut for about 80 feet while drawing an average current of about 100 amperes, as high as about 150 amperes when cutting through the reinforcing bars and down to about 80 amperes when just cutting the concrete.
  • improvements in battery technology may permit the use of higher horsepower electric motors in the future while maintaining an adequate charge time.
  • the power operated actuator 54 of the saw as shown in Figure 3 includes a hydraulic cylinder 56 having one end 58 that is secured in a suitable manner to the frame and having another end 60 that has a pivotal connection 62 to a front axle mount 64 whose rear end 66 is supported by stub shafts 68 by bearings 70 on frame 14 and whose front end 72 supports the front wheel axle 22.
  • a hydraulic pump 74 has a fluid connection 76 to the cylinder 56 and is rotatively driven by a second electric motor 78 which has a power connection 80 to the battery pack 34.
  • Control 38 has a control connection 82 to the electric motor 78 to control its operation and hence the operation of the hydraulic pump 74.
  • Extension of the cylinder 56 pivots the front end 72 of the front axle mount 64 downwardly to raise the front end of the frame 14 as it pivots about the rear wheels 16 and thereby moves the saw upwardly from the lower cutting position shown by phantom line representation in Figure 2 to the upper idle position shown by solid line representation.
  • Retraction of the cylinder 56 raises the front wheels 20 with respect to the frame 14 to lower the front end of the frame and thereby move the saw blade downwardly from its upper idle position to its lower cutting position.
  • the concrete saw also includes a V-shaped guide member 84 having a pivotal connection 86 to the machine frame 14 for movement between a forwardly protecting use position shown by partially phantom line representation and a generally vertically extending storage position.
  • a guide wheel 88 on the vertex of the V-shaped guide member 84 rolls along the surface being cut with the guide member in the forwardly projecting use position and provides guiding of the saw.
  • the saw 10 also includes a pair of blade guards 90 respectively associated with the pair of blade arbors 42 to provide protection from any rotating blade.
  • These blade guards 90 may be removable mounted and as disclosed each includes a rear portion 92 and a front portion 94 that is mounted by a hinge 96 for movement between a forwardly projecting use position and an upwardly projecting open position. While an embodiment of the invention has been illustrated and described, it is not intended that this embodiment illustrates and describes all possible forms of the invention. Rather, the words used in the specification are words of description rather than limitation, and it is understood that various changes may be made without departing from the spirit and scope of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

L'invention porte sur une scie à béton (10) qui comprend un moteur électrique (24) alimenté par un bloc batterie (34) pour entraîner une paire d'arbres de scie (42) et une transmission (30) vers des roues arrière (16) qui assurent une autopropulsion de la scie en coopération avec des roues avant (20). Un actionneur électrique (54) élève et abaisse les roues avant (20) pour permettre un mouvement vers le haut et vers le bas du cadre de scie (14) autour de ses roues arrière (16). Le bloc batterie (34) peut être constitué de batteries au plomb-acide, de batteries au nickel-cadmium, de batteries au nickel-métal-hydrure ou de batteries au lithium, et le moteur électrique (24) a une puissance de 5 à 15 chevaux, de préférence d'environ 10 chevaux, pour assurer une coupe de la plupart des ouvrages en béton classiques.
PCT/US2009/039267 2009-04-02 2009-04-02 Scie à béton alimentée par batterie WO2010114545A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2009/039267 WO2010114545A1 (fr) 2009-04-02 2009-04-02 Scie à béton alimentée par batterie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2009/039267 WO2010114545A1 (fr) 2009-04-02 2009-04-02 Scie à béton alimentée par batterie

Publications (1)

Publication Number Publication Date
WO2010114545A1 true WO2010114545A1 (fr) 2010-10-07

Family

ID=42828592

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/039267 WO2010114545A1 (fr) 2009-04-02 2009-04-02 Scie à béton alimentée par batterie

Country Status (1)

Country Link
WO (1) WO2010114545A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3094462A4 (fr) * 2014-01-18 2017-08-16 Diamond Products, Limited Scie à béton électrique
EP4212274A1 (fr) * 2022-01-18 2023-07-19 Wacker Neuson Produktion GmbH & Co. KG Dispositif de coupe de matériaux
USD1039009S1 (en) 2022-02-25 2024-08-13 Milwaukee Electric Tool Corporation Early entry concrete saw

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468336A (en) * 1947-03-11 1949-04-26 Lewis William Hurst Collapsible saw for cutting concrete and the like
US5104195A (en) * 1988-06-06 1992-04-14 Zaccho Bo R Self-propelled apparatus for cutting asphalt and concrete
US5810448A (en) * 1995-01-09 1998-09-22 Diamant Boart, Inc. Self propelled saw
US6102022A (en) * 1997-01-07 2000-08-15 Crafco, Incorporated Pavement cutting machine
US20020117160A1 (en) * 2001-02-23 2002-08-29 Acker Brad V. Automatic depth of cut control for concrete saw
US20030168054A1 (en) * 2000-02-18 2003-09-11 Mk Diamond Products, Inc. Portable concrete saw
US20070164598A1 (en) * 2006-01-14 2007-07-19 Adam Johnson Isolation system for movable saws, including a concrete saw

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468336A (en) * 1947-03-11 1949-04-26 Lewis William Hurst Collapsible saw for cutting concrete and the like
US5104195A (en) * 1988-06-06 1992-04-14 Zaccho Bo R Self-propelled apparatus for cutting asphalt and concrete
US5810448A (en) * 1995-01-09 1998-09-22 Diamant Boart, Inc. Self propelled saw
US6102022A (en) * 1997-01-07 2000-08-15 Crafco, Incorporated Pavement cutting machine
US20030168054A1 (en) * 2000-02-18 2003-09-11 Mk Diamond Products, Inc. Portable concrete saw
US20020117160A1 (en) * 2001-02-23 2002-08-29 Acker Brad V. Automatic depth of cut control for concrete saw
US20070164598A1 (en) * 2006-01-14 2007-07-19 Adam Johnson Isolation system for movable saws, including a concrete saw

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3094462A4 (fr) * 2014-01-18 2017-08-16 Diamond Products, Limited Scie à béton électrique
US9873210B2 (en) 2014-01-18 2018-01-23 Diamond Products, Limited Electric concrete saw
US10894339B2 (en) 2014-01-18 2021-01-19 Diamond Products, Limited Electric concrete saw
EP4212274A1 (fr) * 2022-01-18 2023-07-19 Wacker Neuson Produktion GmbH & Co. KG Dispositif de coupe de matériaux
USD1039009S1 (en) 2022-02-25 2024-08-13 Milwaukee Electric Tool Corporation Early entry concrete saw

Similar Documents

Publication Publication Date Title
US7942142B2 (en) Battery powered concrete saw
US20060010844A1 (en) Unmanned utility vehicle
US9227341B2 (en) Battery powered concrete saw
US7578116B1 (en) Battery-operated riding rotary mower
EP2720526B1 (fr) Commande de vitesse pour outils électriques
US20060059880A1 (en) Unmanned utility vehicle
US20020104300A1 (en) Mower with engine-driven blade and electrical propulsion
US20180139903A1 (en) Battery-electric and internal-combustion engine assist hybrid propulsion and implement drive work systems
US11910745B2 (en) Mower deck with actuated blade housings
US8769917B1 (en) Battery-operated compact riding rotary mower
EP3094462B1 (fr) Scie à béton électrique
WO2010114545A1 (fr) Scie à béton alimentée par batterie
US20080196371A1 (en) Electrically Driven, Reel-Mower Accessories
JP6092006B2 (ja) 草刈機
CN102783310A (zh) 一种太阳能割草机
WO2014071835A1 (fr) Outil électrique à entraînement direct
CN206986871U (zh) 河道清理机
CN212436380U (zh) 一种整体可升降式混合动力割草机
EP3192925A1 (fr) Chasse-neige à entraînement hybride
EP2058171A2 (fr) Mini-benne avec une propulsion électrique
CN104641802A (zh) 园艺加工机的行驶机构驱动装置
CN216674117U (zh) 一种电锯
CN218789120U (zh) 一种可遥控大幅面强力除草机
CN213638904U (zh) 一种园林用便于清理的剪草装置
CN219862711U (zh) 一种水环境治理打捞器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09842818

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09842818

Country of ref document: EP

Kind code of ref document: A1