US3885694A - Three-way bucket assembly for loader - Google Patents

Three-way bucket assembly for loader Download PDF

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Publication number
US3885694A
US3885694A US409331A US40933173A US3885694A US 3885694 A US3885694 A US 3885694A US 409331 A US409331 A US 409331A US 40933173 A US40933173 A US 40933173A US 3885694 A US3885694 A US 3885694A
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US
United States
Prior art keywords
bucket
connecting means
way
pivot pin
dump
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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
US409331A
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English (en)
Inventor
Tomio Uchida
Kisaburo Otabe
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.)
Caterpillar Mitsubishi Ltd
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Caterpillar Mitsubishi Ltd
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Publication date
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Publication of US3885694A publication Critical patent/US3885694A/en
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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
    • E02F3/28—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
    • E02F3/34—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 with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines
    • E02F3/345—Buckets emptying side-ways

Definitions

  • the present invention relates to a bucket for a wheeled or crawler-tractor, and more particularly a three-way bucket assembly capable of discharging its loads to the front and both sides.
  • a dump bucket assembly of one-sided dumping or threeway dumping mechanisms has been developed.
  • a three-way bucket assembly is capable of dumping earth not only at the front but also to the sides and is suitable for a wide range of operating conditions.
  • Buckets of various dumping mechanisms are already known.
  • either of the two pivotal pins connecting a bucket support, connected with a lift arm ofthe earth moving machine, is detached on the right or left side manually or by complicated hydraulic circuits.
  • the disadvantages of such systems are that operations are complicated or the detachment or attachment of the pivotal pin becomes inaccurate. Further the supporting of the bucket is poor and the bucket tends to get off the supporting, sufficient safety being not achieved. Earth sticks to pivot pins connecting the bucket and the bucket support and accumulates in the pivot holes to prevent the pivot pins from being easily inserted, and causes the early abrasion of the pins.
  • the primary object of the present invention is to pro vide a three-way bucket assembly for an earth moving machine having no aforesaid disadvantages.
  • a threeway bucket assembly for an earth moving machine comprising a bucket and a bucket support
  • the bucket has a pair of first connecting means and a pair of second connecting means on its rear side and the back support comprises at least one support plate connected with a lift arm of the earth moving machine, at least one frame fixed on the support plate and laterally extended, a double rod double acting type hydraulic cylinder the center of which is pivotably mounted to the center of the frame and which has a pair of third connecting means at the end of the rod and a pair of fourth connecting means arranged on both ends of the frame and provided with pivot pins.
  • the hydraulic cylinder is in the inactive state.
  • each of the first connecting means is in mesh with each of the third connecting means and each of the second connecting means is in mesh with each of the fourth connecting means.
  • the threeway dump bucket assembly is characterized in that through the unloading and turning around the pivot pin of the bucket, engagement between the first and third connecting means and between the second and fourth connecting means, located in front of the moving direction, is more firmly secured.
  • FIG. 1 is a rear view showing a three-way bucket assembly of well-known type modifying the position for fixing a cylinder.
  • FIG. 2-A is a partial rear view showing a three-way dump bucket assembly of well-known type modifying a position of a pivot pin.
  • FIG. 2-8 is a partial view showing the connecting state of a pivot pin of FIG. 2-A.
  • FIG. 3-A is a partial rear view showing a three-way dump bucket assembly of well-known type modifying automatically a pivot pin.
  • FIG. 3-3 is a partial view showing the connecting state of the pivot pin of FIG. 3-A.
  • FIG. 4 is a rear view of a three-way bucket assembly of the present invention.
  • FIG. 5 is a right-side view of FIG. 4.
  • FIG. 6 is a rear view showing the bucket slid to the left.
  • FIG. 7 is a rear view showing a bucket tilting to the left.
  • FIG. 8 is an enlarged sectional view showing the connecting state of a second connecting means with a fourth connecting means.
  • FIG. 9 is an enlarged perspective view showing engagement between the first connecting means and the third connecting means.
  • FIG. 10 is an enlarged perspective view showing engagement of the second connecting means with the third connecting means.
  • a three-way bucket assembly of wellknown type comprises bucket having a mold board provided with pin means 52, 52' for holding hydraulic cylinder 51 for tilting the bucket, support member having support plates 54 to be connected with lift arms of an earth moving machine, pivot pins 53, 53 for connecting support member 55 with bucket 50, one end of hydraulic cylinder 51 being pivotally connected with support member 55 and the other end being connected with either of pin means 52, 52'.
  • pivot pin 53' is manually disengaged and cylinder 51 is extended while the upper end of cylinder 51 is engaged with pin means 52.
  • Bucket 50 is caused to turn around pivot pin 53 by the extension of the cylinder and adopt the state as shown in the dotted line to discharge to the left.
  • pivot pin 53' is engaged and pivot pin 53 is disengaged, while the upper end of cylinder 51 is engaged with pin means 52'.
  • FIG. Z-A a three-way dump bucket assembly of well-known type is the same as that of FIG. 1 except that one end of cylinder 63 is connected with the center of support member 62 and the other end of the cylinder is connected with the central tip of bucket 61.
  • pivot pin 64 FIG. 2-8 connects support member 62 with bucket 61, bucket 61 is tilted to a position as shown in the dotted line by the extension of cylinder 63.
  • FIGS, 3-A and 3-B a three-way dump bucket assembly of well-known type is the same as that of FIG. 2-A except for the structure of pivot pin 74. Pivot pin 74 is automatically and hydraulically engaged with or disengaged from bucket 71.
  • FIGS. 3-A and 3-H engagement and disengagement of a support member and bucket by means of a pivot pin are carried out hydraulically.
  • both pivot pins connect the bucket and support member and only at the time of discharging to the side, a hydraulic pressure circuit works such that one of the pivot pins disengages from the bucket.
  • the operation of pivot pins i.e., engagement or disengagement, is easier and distortion of the bucket occurs less.
  • the bucket assembly in FIGS. 3-A and 3-B has the disadvantage that earth sticks to and around the pivot pins and the bucket is distorted to some extent.
  • pivot pins are arranged on the support member and inserted into holes of the bucket as the case may be.
  • Pivot pins and holes easily pick up earth when they are not in use. resulting in difficult engaging operations and early mechanical wear. Tilting of the bucket is conducted with a fulcrum at the pivot pin and precision of engagement ofa pivot pin with a hole is obviously required. With such required precision of engagement, a small distortion of the bucket renders engagement more difficult.
  • a three way dump bucket assembly comprising bucket A and bucket support B is at ordinary conditions, for loading and unloading at the front without tilting to the side.
  • Bucket A with bottom reinforcing plates 18 has mold board 1, with sides so disposed as to be fit to the side discharging and cutting edge 2 welded to the tip of mold board 1. If need be. cutting edge 2 can be provided with teeth.
  • On both sides of rear face 1A of mold board 1 are arranged two reinforcing plates 22, 22 the outer portions of which are welded to side boards 22A, 22A such that the reinforcing plates hold the curved bottom plate of mold board 1 therebetween.
  • first and second connecting means 3, 3' and 4, 4'. 4A (not shown), 4A to connect retractably bucket A with bucket support B.
  • detector plate 7 at lower edge 1' of rear face of mold board 1 are secured detector plate 7 and guide brackets 6, 6, which are arranged on both sides of detector plate 7.
  • Detector plate 7 cooperates with detector lever 19 mounted on bucket support B to detect the normal state of the bucket.
  • Guide brackets 6, 6 guide the bucket when the bucket slides laterally and contribute to the support of bucket A by bucket support B.
  • bucket support B has plates 8 adapted to be engaged with lift arms of an earth moving machine such as a wheeled or track-type loader and two frames 9, 9' preberably composed of a plurality of parallel pipe materials parallel with each other and se cured to plates 8.
  • bracket 12 On upper frame 9 is secured bracket 12 for mounting a cylinder.
  • Hydraulic cylinder 18 is pivotably mounted on bracket 12 through pin 11.
  • the cylinder is of double rod type, preferably double rod double acting type.
  • the aforesaid first connecting means and third connecting means 20, 20 engaged therewith retractably and rotatably relative to the first connecting means are mounted to each tip of rods of the hydraulic cylinder.
  • detector lever 19 is rotatably mounted.
  • the aforesaid second connecting means 4, 4', 4A, 4A and fourth connecting means 30, 30' are engaged re tractably and rotatably with each other.
  • Third connecting means 20 are positioned at the tip end of rods of hydraulic cylinder 18 at 20C.
  • Third con' necting means has 2 locking members 208 secured to the rod by pin 20D.
  • First connecting means 3, 3' secured to or integrated with reinforcing plates 22, 22' for bucket A each have an opening 3E for receiving locking member 208 and pin 20D, opening 38 for re DCving the rod and opening 3A.
  • Opening 3A allows relative rotation between the first and third connecting means while they are engaged with each other and this relative rotation renders the engagement of the two connecting means tighter.
  • Fourth connecting means 30 has bearing means secured as by welding to plate 25', the plate being welded to frame 9 of bucket support B. At the end of bearing means 13' is secured lock bracket 17'. Bearing means 13' and lock bracket 17' each have holes receiving pivot pin 14' and rotatably hold pivot pin 14'. To both ends of pivot pin 14' is secured square slide block 10', by means of lock pin 15. Second connecting means 4' formed on plate 22' for reinforcing bucket A comprises groove 5' for receiving the aforesaid slide block.
  • Arcuate cavity SA is located such that it contacts end circular portion 17A of lock bracket 17' when the second and fourth means relatively rotate at a specified position where the tip of block 10 comes in contact with wall surface 5C.
  • the inside ends of the square slide block are preferably cut off at corners as shown in the Figures such that the block is easily inserted even if a slight distortion occurs in groove 5'.
  • Pivot pin 14' of fourth connecting means is held within bearing means 13' and, as will be described later, sealed. Thus earth will not stick to it resulting in very little mechanical wear of it.
  • a square slide block which has worn can easily be replaced by removing pin
  • FIGS. 4, 6 and 7, the side tilting behavior of the bucket and the function of each connecting means at the time of tilting are described.
  • second connecting means 4, 4 mounted on reinforcing plates 22, 22' and fourth connecting means 30, disposed at both ends of frame 9 are locked with each other.
  • side dumping for instance. left side dumping, via pipe 31 pressure fluid is introduced into cylinder 18 to extend left side part 188 and contract right side part 18A whereby bucket A moves laterally to a position as shown in FIG. 6 relatively of bucket support B. This movement is continued until the inside end of square slide bracket 10 of left side fourth connecting means 30 comes in contact with stop wall surface 5C of second connecting means 4.
  • right side second connecting means 4' and fourth connecting means 30' are disengaged from each other.
  • left side part 188 of the rod is further extended and right side part 18A is contracted, bucket A turns around pivot pin 14 of left side fourth connecting means 30, at the time of which right side first connecting means 3' and third connecting means 20 are disengaged from each other.
  • lock member 208 (FIG. 9) of left side third connecting means 20 enters opening 3A of first connecting means 3 to make the locking of first connecting means 3 and third connecting means 20 more secure.
  • end circular portion .17A of lock bracket 17 of fourth connecting means 30 comes in contact with arcuate cavity SA of second connecting means 4 to make the locking of second connecting means 4 and fourth connecting means 30 more secure also (See FIGS. 4, 6 and 7.).
  • positioner 16 is mounted on bearing means 13 of fourth comnecting means 30' and includes a spring to force a ball 16A against pivot pin 14'. Positioner 16 will not hamper the rotation of pivot pin 14 by more than a predetermined force but prevents pivot pin 14 from free rotation when second connecting means 4' and fourth connecting means 30' are released. Sealrings 40, 41 are arranged on fourth connecting means 30 between bearing means 13' and pivot pin 14' and between square slide block 10 and lock bracket 17 to prevent earth from entering the pivot pin and the hole of the shaft. Oil hole 21 is used for supplying lubricating oil to the contact surface 14A of pivot pin 14.
  • Lift arms (not shown) of the loader are actuated to raise the bucket to a given height.
  • the lever of control device 60 is actuated to left (L)
  • work oil controlled by the lever extends left side part 188 of the rod and contracts right side part 18A to move bucket A laterally.
  • end circular portion 17A of lock bracket 17 is in contact with arcuate cavity 5A, and consequently bucket A is prevented from lateral movement before it returns to the horizontal state.
  • engagement of end circular portion 17A and cavity 5A is completely released and bucket A moves to the right and returns to its original central position by the action of the cylinder.
  • right side second connecting means 4 and fourth connecting means 30 are again engaged. Further it is understood that locking of right side first connecting means and third connecting means is attained by the return of bucket A to the level state.
  • right side second connecting means 4' and fourth connecting means 30 are disengaged, relocking of both means become impossible if fourth connecting means 30' turns as by vibration.
  • positioner 16 mounted on bearing means 13 is adapted to prevent the free rotations of pivot pin 14 and square slide block 10', re locking of the two connecting means is easily achieved.
  • detector plate 7 and detector lever lQ cooperate with each other to return the lever of control device 7 60 to N position and stop the action of hydraulic cylinder 18.
  • a three-way bucket assembly for an earth moving machine comprising a dump bucket and a dump bucket support
  • the dump bucket is provided with first and second connecting means displaced at each of its rear sides, respectively
  • the bucket support comprises at least one plate connected with lift arms of the earth moving machine, at least one frame is secured to the plate and laterally extended, a double rod type hydraulic cylinder, the center of which is pivotally mounted on the center of the frame and is laterally extended, is provided with third connecting means disposed at the outer ends of each rod of the cylinder, and fourth connecting means, disposed at both ends of the frame, are provided with pivot pins whereby at standard conditions when the hydraulic cylinder is at rest, each of the first connecting means is engaged with each of the third connecting means and each of the second connecting means with each of the fourth connecting means; the hydraulic cylinder, when actuated in either direction, moves the bucket laterally relative to the bucket support in the direction a given amount to release the locking of the second and fourth connecting means located backwardly of the dump bucket and thereafter begins to turn the
  • a three-way dump bucket assembly for an earth moving machine as set forth in claim 1 in which locking between the first and third connecting means and between the second and fourth connecting means, located forwardly of the bucket is tightened by the tuming of the bucket about the pivot pin.
  • a three-way dump bucket for an earth moving machine as set forth in claim 3 in which the fourth connecting means include a lock bracket secured to the bearing means and having a circular end portion; the second connecting means include means engaging the circular end portion of the lock bracket upon rotation of the bucket whereby the locking of the second and fourth connecting means located forwardly of the bucket is tightened by the discharge turn of the bucket and in allowing the bucket to return to the original position, the returning turn is first made and then the bucket moves laterally to the original position relative to the bucket support.
  • a three-way dump bucket assembly for a construction machine as set forth in claim 1 provided with means for detecting the return of the bucket to the standard conditions by lateral movement after the returning turn of the bucket from the dumping position and thereby deactuating the hydraulic cylinder.

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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)
  • Operation Control Of Excavators (AREA)
US409331A 1972-10-25 1973-10-24 Three-way bucket assembly for loader Expired - Lifetime US3885694A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47106206A JPS5247241B2 (enrdf_load_stackoverflow) 1972-10-25 1972-10-25

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US3885694A true US3885694A (en) 1975-05-27

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US409331A Expired - Lifetime US3885694A (en) 1972-10-25 1973-10-24 Three-way bucket assembly for loader

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US (1) US3885694A (enrdf_load_stackoverflow)
JP (1) JPS5247241B2 (enrdf_load_stackoverflow)
SE (1) SE407249B (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993206A (en) * 1974-02-08 1976-11-23 Mitsubishi Jukogyo Kabushiki Kaisha Power slide mechanism
US4341026A (en) * 1979-11-30 1982-07-27 Caterpillar Mitsubishi Ltd. Bucket assembly for earthmoving machines capable of side dumping as well
US5044858A (en) * 1989-08-11 1991-09-03 Simmons-Rand Company Vehicle with lateral moving lift
USD324054S (en) 1988-07-08 1992-02-18 Nordiska Industrimaskiner Ab Bucket holder
US6386822B1 (en) * 1999-12-15 2002-05-14 Caterpillar S.A.R.L. Side dump coupler assembly
US6579058B1 (en) 1999-12-22 2003-06-17 Frank Sales, Jr. Side-dumping loader
DE102004015489B3 (de) * 2004-03-26 2005-05-25 Kurz, Andreas, Dipl.-Ing. Schaufelkippvorrichtung
AT413225B (de) * 2003-03-18 2005-12-15 Winkelbauer Franz Seitlich kippbare ladeschaufel

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE450016B (sv) * 1982-06-16 1987-06-01 Tryggstad Jan Ake Kombinationsredskap for hjulburna fordon
JPS63130553U (enrdf_load_stackoverflow) * 1987-02-18 1988-08-26

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3400845A (en) * 1967-02-09 1968-09-10 Int Harvester Co Side dump bucket
US3531007A (en) * 1968-09-20 1970-09-29 Tage Nils Wilhelm Leijon Side dump bucket arrangement

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3400845A (en) * 1967-02-09 1968-09-10 Int Harvester Co Side dump bucket
US3531007A (en) * 1968-09-20 1970-09-29 Tage Nils Wilhelm Leijon Side dump bucket arrangement

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993206A (en) * 1974-02-08 1976-11-23 Mitsubishi Jukogyo Kabushiki Kaisha Power slide mechanism
US4341026A (en) * 1979-11-30 1982-07-27 Caterpillar Mitsubishi Ltd. Bucket assembly for earthmoving machines capable of side dumping as well
USD324054S (en) 1988-07-08 1992-02-18 Nordiska Industrimaskiner Ab Bucket holder
US5044858A (en) * 1989-08-11 1991-09-03 Simmons-Rand Company Vehicle with lateral moving lift
US6386822B1 (en) * 1999-12-15 2002-05-14 Caterpillar S.A.R.L. Side dump coupler assembly
US6579058B1 (en) 1999-12-22 2003-06-17 Frank Sales, Jr. Side-dumping loader
AT413225B (de) * 2003-03-18 2005-12-15 Winkelbauer Franz Seitlich kippbare ladeschaufel
DE102004015489B3 (de) * 2004-03-26 2005-05-25 Kurz, Andreas, Dipl.-Ing. Schaufelkippvorrichtung

Also Published As

Publication number Publication date
SE407249B (sv) 1979-03-19
JPS5247241B2 (enrdf_load_stackoverflow) 1977-12-01
JPS4965004A (enrdf_load_stackoverflow) 1974-06-24

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