EP3530808A1 - Aufhängungsanordnung für ein fahrzeug, eine arbeitsmaschine oder ähnliche fahrzeuge, und eine arbeitsmaschine oder ähnliche fahrzeuge - Google Patents

Aufhängungsanordnung für ein fahrzeug, eine arbeitsmaschine oder ähnliche fahrzeuge, und eine arbeitsmaschine oder ähnliche fahrzeuge Download PDF

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Publication number
EP3530808A1
EP3530808A1 EP19156332.9A EP19156332A EP3530808A1 EP 3530808 A1 EP3530808 A1 EP 3530808A1 EP 19156332 A EP19156332 A EP 19156332A EP 3530808 A1 EP3530808 A1 EP 3530808A1
Authority
EP
European Patent Office
Prior art keywords
blade
suspension arrangement
turning
joint
arrangement according
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.)
Withdrawn
Application number
EP19156332.9A
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English (en)
French (fr)
Inventor
Martti Tiainen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3530808A1 publication Critical patent/EP3530808A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H5/00—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
    • E01H5/04—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material
    • E01H5/06—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades
    • 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
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • 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
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/7636—Graders with the scraper blade mounted under the tractor chassis
    • E02F3/7645—Graders with the scraper blade mounted under the tractor chassis with the scraper blade being pivotable about a horizontal axis disposed parallel to the blade
    • 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
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/7636—Graders with the scraper blade mounted under the tractor chassis
    • E02F3/7654—Graders with the scraper blade mounted under the tractor chassis with the scraper blade being horizontally movable into a position near the chassis

Definitions

  • the invention is related to the suspension of underbody graders or underbody scrapers used in vehicles, work machines and similar.
  • Underbody graders are used for example for levelling dirt roads and in the winter time for removing dense compacted snow from the surface of the road.
  • an underbody grader is an actual device unit to be connected to a vehicle, work machine or similar, which device unit also comprises a blade under the vehicle, work machine or similar, where blade refers to that part of the underbody grader which is in contact with the surface of the road and at the same time pushes the transferred material ahead of the blade.
  • Pajakulma Oy's European patent application publication EP 3 173 536 describes a mounting frame used in the suspension of the blade of an underbody grader.
  • the delivery angle of the blade of an underbody grader refers to the angle between the blade and the horizontal normal of the longitudinal axis of a vehicle, work machine or similar. When the delivery angle is 0, the blade is transversely in relation to the longitudinal axis.
  • the wheelbase of a vehicle, work machine or similar is short or relatively short in relation to the width of the blade used, such as especially in tractors or shorter trucks, the wheelbase may restrict the available delivery angle. In this case, it may be impossible to turn a blade especially with a relatively large delivery angle from the working position to the transport position, because the blade touches a tyre. This is why it is necessary to use a relatively small delivery angle especially in tractors and shorter trucks.
  • the problem with a relatively small delivery angle is that under certain circumstances, when the delivery angle is not sufficient for the circumstances, the material to be transferred does not move in the desired manner, and at worst the blade discharges the material to be transferred onto the road, not to the side of the shoulder of the road. Moreover, in this case the blade pushes a large amount of the material to be transferred in front of it without discharging it to the side of the shoulder of the road, which increases the power demand of the vehicle, work machine or similar considerably. This has an adverse impact on fuel economy and increases the working time used.
  • One of the objectives of the invention is to enable an increase in the delivery angle of a blade used in an underbody grader.
  • This objective can be solved by means of a suspension arrangement according to the independent claim and by means of a vehicle, work machine or similar according to the parallel independent claim.
  • the suspension arrangement of a blade of an underbody grader used in a vehicle, work machine or similar comprises turning devices for turning the blade from the working position to the transport position and back.
  • the suspension arrangement comprises transfer devices, which have been arranged
  • the transfer devices have been adapted to transfer the turning joint of the blade to a first lateral direction, in which case the blade rotates with respect to one joint reducing the delivery angle, and to a second lateral direction, in which case the blade rotates with respect to a second joint increasing the delivery angle.
  • This is a mechanically relatively simple method to reduce and increase the delivery angle of the blade by using a relatively simple mechanism.
  • the room for movement of the transferable turning joint is implemented in a form-restricted member, for example by arranging the transferable turning joint to be movable in a slot.
  • the transferable turning joint is a movable hinge pin or comprises a movable hinge pin.
  • the transfer devices most advantageously comprise at least one hydraulic cylinder.
  • the transfer devices have most advantageously been suspended to the body plate of the underbody grader.
  • the body plate has most advantageously been suspended at least by its one edge but most preferably by its both edges by means of a stabilising telescopic structure to the body of the vehicle, work machine or similar.
  • the blade has most advantageously been suspended to the transfer devices, such as to a hinge pin movable in a slot.
  • the turning devices advantageously comprise a hydraulic cylinder, which has been adapted to turn the blade in the lateral direction around the movable hinge pin.
  • the blade has most advantageously been fastened to the body plate by means of a second joint, such as a bull's eye, which is fixed, in which case the fixed joint forms a pivoted axis, around which the movable turning joint turns the blade.
  • a second joint such as a bull's eye
  • a vehicle, work machine or similar according to the second aspect of the invention contains a blade fastened to a suspension arrangement of an underbody grader according to any one of the preceding claims.
  • FIG 1 shows a conceptual drawing of a tractor 20 where the blade 4 of an underbody grader 21 has been suspended by using the suspension arrangement according to the invention.
  • the position of the blade 4 is changed between the working position I and transport position II (cf. also FIG 2 and 3 ) by means of a hydraulic cylinder 5.
  • the hydraulic cylinder 5 is powered by the hydraulic system of the tractor 20.
  • the underbody grader 21 has been fastened to a tractor 20.
  • the underbody grader 21 can be used in a corresponding manner in other vehicle, work machine or similar.
  • the suspension arrangement comprises turning devices 5 for turning the blade 4 from the working position I to the transport position II and back, as well as transfer devices (hydraulic cylinder 6, transfer slot 7, bull's eye 9, hinge pin 14), which have been arranged
  • FIG 2 shows a side view of the suspension arrangement according to FIG 1 when the blade 4 is in the working position (position I)
  • FIG 3 shows a side view of the suspension arrangement according to FIG 1 when the blade 4 is in the transport position (position II).
  • the transfer devices (hydraulic cylinder 6, transfer slot 7, hinge pin 14) have been adapted to transfer the turning joint (hinge pin 14) of the blade 4 to a first lateral direction (in other words forward), in which case the blade 4 rotates with respect to one joint (bull's eye 9) reducing the delivery angle, and to a second lateral direction (in other words backwards), in which case the blade 4 rotates with respect to said second joint (bull's eye 9) increasing the delivery angle.
  • the transfer devices (hydraulic cylinder 6, transfer slot 7, hinge pin 14) have most advantageously been arranged to transfer the turning joint (hinge pin 14) of the blade 4 at the same time as when the turning devices (hydraulic cylinder 5) are being used.
  • the turning joint used is most advantageously a movable hinge pin 14 or it comprises a movable hinge pin.
  • the room for movement of the transferable turning joint 14 can most advantageously be implemented in a form-restricted member (transfer slot 7).
  • the transferable turning joint e.g. a hinge pin 14
  • the transfer position of the transferable turning joint 14 has most advantageously been selected so that the transferable turning joint 14 is at an edge of the form-restricted member or slot 7 so that the edge of the form-restricted member or slot 7 supports the transferable turning joint 14 against the forces directed at the blade 4 from the working direction of the blade 4.
  • the forces coming from the blade 4 are primarily directed from the base of the slot 7 to the body plate 1.
  • a tractor-specific adaptation can be implemented by restricting the room for movement of the transferable turning joint 14 in the form-restricted member or slot 7 by installing in the form-restricted member or slot 7 a piece that prevents the movement of the transferable turning joint 14 in order to restrict the turning position of the blade 4, most advantageously for the reason that the blade 4 would not touch a wheel located behind the blade 4 in a vehicle, work machine or similar (cf. FIG 4 ).
  • the transfer devices (hydraulic cylinder 6, transfer slot 7, hinge pin 14) most advantageously comprise at least one hydraulic cylinder.
  • the hydraulic cylinder 6 has most advantageously been positioned so that when the blade 4 is in the working position, the form-restricted member or slot 7 supports the transferable turning joint (hinge pin 14) in order to receive the forces directed at the blade 4 from the working direction of the blade 4 or in order to reduce or eliminate the force components directed at the hydraulic cylinder 6 by such forces.
  • the transfer devices (hydraulic cylinder 6, transfer slot 7, hinge pin 14) have most advantageously been suspended, made or supported to the body plate 1 of the underbody grader 21.
  • the body plate 1 may be suspended at least by its one end by means of a stabilising telescopic structure 3 to the body of the vehicle, work machine or similar.
  • the blade 4 may be suspended to the transfer devices (hydraulic cylinder 6, transfer slot 7, hinge pin 14), most advantageously to a hinge pin 14 movable in the slot 7.
  • the turning devices most advantageously comprise a hydraulic cylinder 5, which has been adapted to turn the blade 4 in the lateral direction (in other words in the forward-backwards direction) around the movable hinge pin 14.
  • the hydraulic cylinder 5 of the turning devices and the hydraulic cylinder 6 of the transfer devices have most advantageously been connected to the same hydraulic line.
  • the blade 4 has best been fastened to the body plate 1 by means of a second joint 9, such as a bull's eye, which is fixed, in which case the fixed joint 9 forms a pivoted axis, around which the movable turning joint 14 turns the blade 4.
  • a second joint 9 such as a bull's eye
  • a vehicle, work machine or similar contains a blade 4 fastened to a suspension arrangement of an underbody grader 21 according to any one of the preceding claims.
  • the body plate 1 is a plate (most advantageously approx. 40 - 50 mm thick) or plate structure. Its material is for example iron or steel.
  • the body plate 1 has been fastened by its back section to an auxiliary body 2 by means of a bull's eye 8 (cf. also FIG 4 ).
  • the auxiliary body 2 has been fastened to the body structure of the tractor 20, most advantageously by means of bolt connections made at the through holes 10 of the auxiliary body 2.
  • the body plate 1 has been fastened most advantageously on both sides most preferably by means of an adjustable pillar 3 to the front section of the tractor 20.
  • the pillars 3 are most preferably implemented as a telescopic structure.
  • the structure of the pillar 3 most advantageously includes a hydraulic cylinder operated by the hydraulics of the tractor 20, the top end 11 of which hydraulic cylinder has been fastened to a carrier structure 31 (such as to a plate), which has been fastened by means of bolt connections 63 to be installed to fastening points 33 (located for example in extensions 32) to fastening points (fastening part 33, which may be connected to the body of the tractor 20 by means of a bolt connection 61) located in the body of the tractor 20.
  • the lower end 13 of the hydraulic cylinder is fastened to the body plate 1 for example by means of a bull's eye.
  • the top end 11 of the hydraulic cylinder may be protected by a first rhs tube, and the lower end 13 may be protected by a second rhs tube.
  • the piston of the hydraulic cylinder is inside one rhs tube, and the arm is inside a second rhs tube.
  • the rhs tubes are most advantageously cylindrical in shape.
  • the diameter of the tubes is most advantageously such that both the arm of the hydraulic cylinder and the piston of the hydraulic cylinder have enough room to go through both tubes and that the tubes also have enough room to go one inside the other so that the arm can be run in (in order to raise the body plate 1) or out (in order to lower the body plate 1).
  • the blade 4 has been fastened by its one edge (most advantageously by the left edge in countries with right-hand driving or from the left edge in countries with left-hand driving - in other words from the side of the centre line of the road) by means of a bull's eye 9 to the body plate 1 and from its opposite edge (in other words from the side of the shoulder of the road) by means of a hinge pin 14 to the transfer slot 7.
  • the hinge pin 14 used is most advantageously a hardened pin on top of which there is most preferably a hardened bushing.
  • a hydraulic cylinder 5 fastened to the body plate 1 best works as the turning cylinder of the blade 4.
  • a hydraulic cylinder 6 has been fastened to the body plate 1 from the fastening point 26 by means of a bolt connection 12 and/or by welding, or in some other applicable manner.
  • the operating principle of the suspension arrangement of the underbody grader 21 is as follows: When the blade 4 is in the transport position (position II), the pillars 3 are up, as is the hydraulic cylinder 5.
  • the location of the shoulder-side fastening point in the hydraulic cylinder 6 in the lateral direction is further down forward as compared to the working position (position I).
  • the hinge pin 14 has been moved forward in the transfer slot 7, in which case the blade 4 has room to move to the upper position.
  • Such a turning is enabled by the bull's eye 9 on the side of the centre line of the road.
  • the hydraulic cylinder 5 When turned to the working position (position I), the hydraulic cylinder 5 is run out and at the same time the hydraulic cylinder 6 is used for shifting the location of the hinge pin 14 of the blade 4 in the transfer slot 7 to the back position, in which case it is most advantageously possible to utilise the entire wheelbase of the vehicle, work machine or similar.
  • the working depth of the blade 4 is adjusted by means of the adjustable pillars 3.
  • the adjustable pillars 3 are used for adjusting the height position of the body plate 1. If necessary, the pillars 3 can be used for tilting the blade 4 as much as needed, depending on the inclination of the road surface. This is enabled by a bull's eye located at the lower end of each pillar 3, for example at the lower end 13 of the hydraulic cylinder.
  • the suspension arrangement according to the invention accomplishes the advantage that the entire available wheelbase of the vehicle, work machine or similar - irrespective of the make - can be utilised. At the same time, it is possible to relieve the restriction of the delivery angle resulting from a restricted wheelbase as compared to underbody graders which have a blade with a fixed hinge line in the front-back direction.
  • Another significant advantage is that when the location of the hinge pin 14 in the transfer slot 7 is changeable, it is possible to make the blade 4 higher and straighter than conventionally, in which case it is possible to implement the space reserved for the transfer of the material as a bigger space. If the hinge line of the blade 4 in the front-back direction is fixed and if the delivery angle needs to be bigger, the blade 4 must be made more convex, in which case the material is in a way forced to move out through a narrower gap, which increases resistance.
  • the blade 4 can be brought higher in the transport position, when the location of the hinge pin 14 in the transfer slot 7 is transferable. In this case, the blade 4 can be implemented as more uniform. In addition to this, the suspension system in itself is very low also in terms of the body, in which case the underbody grader 21 reduces the ground clearance of the vehicle, work machine or similar less than a prior art underbody grader.
  • suspension system is really simple, in which case the underbody grader 21 can be built cost-effectively, and its operational reliability can be increased.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
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EP19156332.9A 2018-02-22 2019-02-11 Aufhängungsanordnung für ein fahrzeug, eine arbeitsmaschine oder ähnliche fahrzeuge, und eine arbeitsmaschine oder ähnliche fahrzeuge Withdrawn EP3530808A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20185161A FI128021B (fi) 2018-02-22 2018-02-22 Ajoneuvossa, työkoneessa tai vastaavassa käytettävän alusterän ripustusjärjestely, sekä ajoneuvo, työkone tai vastaava

Publications (1)

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EP3530808A1 true EP3530808A1 (de) 2019-08-28

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EP19156332.9A Withdrawn EP3530808A1 (de) 2018-02-22 2019-02-11 Aufhängungsanordnung für ein fahrzeug, eine arbeitsmaschine oder ähnliche fahrzeuge, und eine arbeitsmaschine oder ähnliche fahrzeuge

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EP (1) EP3530808A1 (de)
FI (1) FI128021B (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6324775B1 (en) * 1999-12-22 2001-12-04 177197 Canada Ltee Folding blade
US20030188461A1 (en) * 2002-04-04 2003-10-09 Vermeulen David M. Cylinder mounting assembly for truck mounted scraper blade
EP3173536A1 (de) * 2015-11-20 2017-05-31 Pajakulma Oy Befestigungsrahmen für arbeitsfahrzeug, das mit einer schild ausgestatet werden muss

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6324775B1 (en) * 1999-12-22 2001-12-04 177197 Canada Ltee Folding blade
US20030188461A1 (en) * 2002-04-04 2003-10-09 Vermeulen David M. Cylinder mounting assembly for truck mounted scraper blade
EP3173536A1 (de) * 2015-11-20 2017-05-31 Pajakulma Oy Befestigungsrahmen für arbeitsfahrzeug, das mit einer schild ausgestatet werden muss

Also Published As

Publication number Publication date
FI20185161A1 (fi) 2019-08-15
FI128021B (fi) 2019-08-15

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