US2973874A - Swing system for digging attachment - Google Patents

Swing system for digging attachment Download PDF

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Publication number
US2973874A
US2973874A US826882A US82688259A US2973874A US 2973874 A US2973874 A US 2973874A US 826882 A US826882 A US 826882A US 82688259 A US82688259 A US 82688259A US 2973874 A US2973874 A US 2973874A
Authority
US
United States
Prior art keywords
hinge member
link
boom
vertical axis
cylinder
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.)
Expired - Lifetime
Application number
US826882A
Other languages
English (en)
Inventor
Vaino J Holopainen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WAIN ROY CORP
Original Assignee
WAIN ROY CORP
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 WAIN ROY CORP filed Critical WAIN ROY CORP
Priority to US826882A priority Critical patent/US2973874A/en
Application granted granted Critical
Publication of US2973874A publication Critical patent/US2973874A/en
Priority to BE678810D priority patent/BE678810A/xx
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/085—Ground-engaging fitting for supporting the machines while working, e.g. outriggers, legs
    • 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
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
    • E02F3/382—Connections to the frame; Supports for booms or arms
    • 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
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
    • E02F3/382—Connections to the frame; Supports for booms or arms
    • E02F3/384—Connections to the frame; Supports for booms or arms the boom being pivotable relative to the frame about a vertical axis

Definitions

  • This invention relates to a swing system for a digging attachment and more particularly to an arrangement for improved side-to-side swinging movement of ahydraulic backhoe attachment or the like for a vehicle.
  • This application is a continuation of application Serial #651,229,
  • Another object of this invention is the provision of a swing system for a backhoe or the like in which the speed of rotation at the extreme side positions is substantially the same as at the intermediate positions.
  • a further object of the instant invention is the provision of a hydraulic digging attachment capable of 180 swinging motion with approximately the same speed of rotation in all positions.
  • Figure l a hydraulic digging attachment incorporating the principles of the present invention
  • Figure 2 is an enlarged perspective view of the attachment showing the swing system
  • Figure 4 is a horizontal sectional view of the invention taken on the line IVIV'-of Figure 3, but with the parts in a slightly different position.
  • Figure 3 is a side elevational view of the swing system
  • FIG. 1 is a perspective view of a tractor carrying of a portion top and bottom plates.
  • the attachment 11 also includes 'a boom 15 which is: con; nected' at one: end to the lower part of the supporttmember 13 for swingingmotion about a horizontal axis; The other end'of the boom is hingedly attached to an inter.-
  • a dipperv stick 16 mediate portion of. a dipperv stick 16 for relative rotation about a horizontal axis.
  • a bucket 17 is connected to the lower end of the dipper stick for hinged motion about a horizontal axis.
  • a hydraulic cylinder 19 connects the upper end of. the dipper stick to the support member 13, while a hydraulic cylinder 21 connects the boom 15 at a point close to its attachment to the dipper stick and toy the support member 13 at a point adjacent its connection to the cylinder 19.
  • the connections of the cylinders. 18, 19 and 21 to'the respectivebucket. 1:7, dipper stick 16, boom 15 and support member 13 are all for hinged movement about horizontal axes.
  • Suitable stabilizers 22 actuated by cylinders 23 are provided.
  • the support member 13 consists of two parts connected together for hinged. movement about a vertical axis, i.e., a' basemember 24 and a hinge'member 25.
  • the base member 24 which is fixed to the tractor frame, is a welded structure madeup of a vertical tube 26 to which are welded side plates 27 and 28 with suitable
  • the base'member has the appearance of a triangle with the tube 26 at its apex. and with the OPPOsitebase to the tractor frame.
  • the hinge member 25 is also a weldment and is made up of two parallel vertical plates'29 and 31, ahorizontal leg 32 at the upper'portion and another horizontal end of the-tube 26",. while a similar pintle 39 extendsupwardly from thelowerleg33, is aligned with the pintle 3S, and resides in the lower end of the tube 26.
  • the hinge member 25 is, therefore, capable of swinging movea ment relativentothe base member 24 about-3a.
  • a suitable aperture- 41 provided in the upper part ofthe hinge member to provide for the pivotal, attachment of the cylinders Hand 21 thereto, while bores'42'through the lower boom 15., I i
  • the link 43 is provided with a protuberance 53 defining a pressure portion 54 which has a concave circular segmental shape.
  • the portion 54 is of such a configuration and is so situated on the link that, when the link is moved about the pin 44, the portion engages snugly the cylindrical surface 52 of the hinge member.
  • the link 45 also has a protuberance 55 which provides for a circular segmental pressure portion 56 adapted to engage the surface 52 when the link is pivoted toward the hinge member about the pin 46.
  • the operation of the invention will be readily understood in view of the above description.
  • the motor of the tractor 12 is placed in idling condition and pressure oil appears in the hydraulic system.
  • oil under pressure is admitted or drained from the various cylinders as is desired to perform the digging operations.
  • oil admitted to the cylinders 23 serves to depress the stabilizers 22 and force them into the ground.
  • Oil to the cylinder 18 rotates the bucket 17, oil to the cylinder '19 rotates the dipper stick 16, and oil to the cylinder 21 rotates the boom 15, all rotations taking place, of course, in vertical planes.
  • Admitting oil to the cylinder 51 while removing oil from the cylinder 48 causes rotation of the hinge member 25 about the axis defined by the pintles 38 and 39; this movement of the hinge member brings about a similar movement of the boom, dipper stick and allied elements.
  • This swinging motion would be used, for instance, in removing dirt from an excavation at the rear of the tractor and loading it into a truck parked at the side.
  • the valving assembly 14 is actuated to introduce oil into the cylinder 51 and to allow it to drain from the cylinder 48.
  • the hinge member 25 is rotated about the axis of the pintles; the force is transmitted, in effect, through a first degree lever of which the pin 49 is the end to which force is applied, the pin 46 is the end from which force is taken and the fulcrum is the contact between the portion 56 of the link and the surface 52 of the hinge member.
  • the link 43 and the cylinder 48 are dragged in a straight line behind the pin 44, thus forcing oil out of the cylinder.
  • a hydraulic digging attachment for use with a vehicle comprising a base member adapted to be secured to a vehicle, a hinge member attached to the base member for pivotal movement relative thereto about a vertical axis, the hinge member having a cylindrical surface which is co-axial with the said vertical axis, a boom connected to the hinge member for pivotal movement relative thereto about a horizontal axis, a boom-actuating hydraulic cylinder connected to the hinge member for pivotal movement relative thereto about a horizontal axis, the connection being at a point spaced vertically from the point of connection of the boom thereto, a pair of hydraulic cylinders each having one end connected to the base member, a link located adjacent each side of the hinge member, each link being pivotally connected at one end to the other end of one of said pair of hydraulic cylinders and at its other end to the hinge member at a point considerably spaced from the said vertical axis, each link having a'circular segment
  • A'hydraulic digging attachment for use with a vehicle, comprising a base member having a vertical tube at one extremity and adapted to be secured to a vehicle, a hinge member attached to the base member by means of pintles lying within the tube for pivotal movement relative thereto about a vertical axis, the hinge member having a cylindrical surface which is co-axial with the said vertical axis and which underlies the said tube, a boom connected to the hinge member for pivotal move ment relative thereto about a horizontal axis, a boomactuating hydraulic cylinder connected to the hinge member for pivotal movement relative thereto about a horizontal axis, the connection being at a point spaced vertically from the point of connection of the boom thereto, a pair of hydraulic cylinders each having one end connected to the base member, a link located adjacent each side of the hinge member, each link being pivotally connected at one end to the other end of one of said pair of hydraulic cylinders and at its other end to the hinge member at a point considerably spaced from the said vertical axis,
  • a hydraulic digging attachment for use with a vehicle, comprising a base member having a vertical tube at an extremity and adapted to be secured to a vehicle, a hinge member attached to the base member by means of pintles lying within the tube for pivotal movement relative' thereto about a vertical axis, the hinge memqbe r having a cylindrical surface which is coaxialwith the said vertical axis and which underlies the said tube,
  • a boom connected to the hinge member for pivotal movement relative thereto about a horizontal axis
  • aboomactuating hydraulic cylinder connected to the hinge member for pivotal movement relative thereto about a horizontal axis, the connection being at a point spaced vertically from the point of connection of the boom thereto
  • a pair of hydraulic cylinders each having one end connected to the base member, a link located adjacent each side of the hinge member, each link being pivotally connected at one end to the other end of one of said pair of hydraulic cylinders and at its other end to the hinge member at a point considerably spaced from the said vertical axis, each link having a circular segmental intermediate pressure portion, the links being located on a level for engagement of the said pressure portion with the said cylindrical surface during certain portions of the swinging cycle of the hinge member about the vertical axis.
  • a hydraulic digging attachment comprising a base member adapted to be secured to a vehicle, a hinge member attached to the base member by means of a pintle and tube connection for pivotal movement relative thereto about a vertical axis, a hinge member having a cylindrical surface which is co-axial with the said vertical axis and which underlies the said pintle and tube connection, a boom connected to the hinge member for pivotal movement relative thereto about a horizontal axis, a boom-actuating hydraulic cylinder connected to the hinge member for pivotal movement relative thereto about a horizontal axis, the connection being at a point spaced vertically from the point of connection of the boom thereto, a pair of hydraulic cylinders each having one end connected to the base member, a link located adjacent each side of the hinge member, each link being pivotally connected at one end to the other end of one of said pair of hydraulic cylinders and at its other end to the hinge member at a point considerably spaced from the said vertical axis, each link having a circular segmental intermediate pressure portion, the
  • a hydraulic digging attachment comprising a base member having a vertical tube at an extremity and being adapted to be secured to a vehicle, a hinge member attached to the base member by means of pintles lying within the tube for pivotal movement relative thereto about a vertical axis, the hinge member having a cylindrical surface which is co-axial with the said vertical axis and which underlies the said tube, a boom connected to the hinge member for pivotal movement relative thereto about a horizontal axis, a boom-actuating hydraulic cylinder connected to the hinge member for pivotal movement relative thereto about a horizontal axis, a pair of hydraulic cylinders each having one end connected to the base member, a link located adjacent each side of the hinge member, each link being pivotally connected at one end to the other end of one of said pair of hydraulic cylinders and at its other end to the hinge member at a point considerably spaced from the said vertical axis, each link having a circular segmental intermediate pressure portion, the links being located on a level for engagement of the said pressure portion with the said cylindrical
  • a hydraulic digging attachment comprising a base member having a vertical tube at an extremity and being adapted to be secured to a vehicle, a hinge member at tached to the base member by means of pintles lying Within the tube for pivotal movement relative thereto about a vertical axis, the hinge member having a cylindrical surface which is co-axial with the said vertical axis and which underlies the said tube, a boom connected to the hinge member for pivotal movement relative thereto about a horizontal axis, a boom-actuating hyraulie cylinder connected to the hinge member for pivotal movement relative thereto about a horizontal axis, the connection being at a point spaced vertically from the point of connection of the boom thereto, a pair of hydraulic cylinders each having one end connected to the base member, a link located adjacent each side of the hinge member, each link being pivotally connected at one end to the other end of one of said pair of hydraulic cylinders and at its other end to the hinge member at a point considerably spaced from the said vertical axis, each
  • a hydraulic digging attachment comprising a base member adapted to be secured to a vehicle, a hinge member attached to the base member by means of a hinge connection for pivotal movement relative thereto about a generally vertical axis, a boom connected to the hinge member for pivotal movement relative thereto about a horizontal axis, a boom-actuating hydraulic cylinder connected to the hinge member for pivotal movement relative thereto about a horizontal axis, the connection being at a point spaced vertically from the point of connection of the boom thereto, a pair of hydraulic cylinders each having one end connected to the base member, a link located adjacent each side of the hinge member, each link being pivotally connected at one end to the other end of one of said pair of hydraulic cylinders and at its other end to the hinge member at a point considerably spaced from the said vertical axis, each link having an intermediate pressure portion, the links being located on a level for engagement of the said pressure portion a with the said hinge member during certain portions of the t swinging cycle of the hinge member about the vertical FOREI

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)
US826882A 1959-07-13 1959-07-13 Swing system for digging attachment Expired - Lifetime US2973874A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US826882A US2973874A (en) 1959-07-13 1959-07-13 Swing system for digging attachment
BE678810D BE678810A (en)) 1959-07-13 1966-03-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US826882A US2973874A (en) 1959-07-13 1959-07-13 Swing system for digging attachment

Publications (1)

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US2973874A true US2973874A (en) 1961-03-07

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US826882A Expired - Lifetime US2973874A (en) 1959-07-13 1959-07-13 Swing system for digging attachment

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4297815A (en) * 1978-12-29 1981-11-03 Poclain Power arm fitted with coupling devices for a member provided to control its position

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB249499A (en) * 1925-03-21 1927-04-07 Gen Electric Improvements relating to switching devices
US2903142A (en) * 1956-01-16 1959-09-08 Shawnee Mfg Company Inc Control mechanism for swingable booms

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB249499A (en) * 1925-03-21 1927-04-07 Gen Electric Improvements relating to switching devices
US2903142A (en) * 1956-01-16 1959-09-08 Shawnee Mfg Company Inc Control mechanism for swingable booms

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4297815A (en) * 1978-12-29 1981-11-03 Poclain Power arm fitted with coupling devices for a member provided to control its position

Also Published As

Publication number Publication date
BE678810A (en)) 1966-09-01

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