WO2003056906A1 - Dispositif de deplacement pas a pas d'un racloir de fumier - Google Patents

Dispositif de deplacement pas a pas d'un racloir de fumier Download PDF

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Publication number
WO2003056906A1
WO2003056906A1 PCT/SE2002/002338 SE0202338W WO03056906A1 WO 2003056906 A1 WO2003056906 A1 WO 2003056906A1 SE 0202338 W SE0202338 W SE 0202338W WO 03056906 A1 WO03056906 A1 WO 03056906A1
Authority
WO
WIPO (PCT)
Prior art keywords
carriage
drive rail
pawl
abutment surface
opening
Prior art date
Application number
PCT/SE2002/002338
Other languages
English (en)
Inventor
Thord Siljefelt
Original Assignee
Sveaverken Odin Ab
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 Sveaverken Odin Ab filed Critical Sveaverken Odin Ab
Priority to AU2002359141A priority Critical patent/AU2002359141A1/en
Priority to EP02793653A priority patent/EP1467612A1/fr
Publication of WO2003056906A1 publication Critical patent/WO2003056906A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K1/00—Housing animals; Equipment therefor
    • A01K1/01—Removal of dung or urine, e.g. from stables
    • A01K1/0132—Removal of dung or urine, e.g. from stables by means of scrapers or the like moving to-and-fro or step-by-step

Definitions

  • the present invention relates to a device for movement in steps of a manure scraper in a manure passageway.
  • the device includes a carriage which supports one or more floor scrapers that extend out from the sides of the carriage, and a drive rail along which the carriage is caused to move in contact with the floor in the manure passageway.
  • the carriage has a movement direction switching means which is aimed at solving the problem with the scraper running into animals or other obstacles that are present in the manure passageway.
  • a device of the kind defined in the preamble is known from the European patent specification EP 0 770 325, which describes a complete plant for dischar- ging manure from manure passageways in a cowshed.
  • the known device includes a carriage that supports one or more floor scrapers, which extend out from the sides of the carriage, a drive rail along which the carriage is caused to move and which is connected to the carriage by means of a pawl mounted on the carriage and actuated by dogging means on the drive rail.
  • the pawl is supported by a shaft which includes shaft pivots, each of which is disposed in a respective vertically extending elongate opening, and at that part located above the shaft the pawl supports against a stop pin.
  • the object of the present invention is to provide a corresponding but simpler switching means.
  • the inventive device is intended for the movement in steps of a manure scraper and includes a carriage that supports one or more floor scrapers which extends/extend out from the sides of the carriage, a drive rail along which the carriage is caused to move and which is connected to the carriage by means of a carriage-mounted pawl which is adapted for actuation by dogging means disposed on the drive rail.
  • the pawl is carried by a shaft that includes shaft pivots which are each disposed in a respective vertically disposed elongate opening.
  • the respective opening includes abutment surfaces for the respective shaft pivot which surfaces extend in two planes which slope downwards and outwards at an angle from each side of the upper narrow portion of the opening.
  • the angle of inclination to the vertical may be 20°, although it may be greater or smaller than 20°.
  • the angle of inclination is determined by the relationship between the length of the pawl between the dogging point on the drive rail and the point of contact of respective abutment surface in the respective opening and the vertical distance between the drive rail and respective contact point on the respective abutment surface.
  • the abutment surface may very short and merge with the upper part of the opening via different curve forms.
  • the abutment surface may consist of a tangent to a curve in the opening.
  • the opening may, for example, have the form of an inverted "keyhole" or have a triangular shape.
  • the drive rail exerts, on the one hand, a horizontal force on the pawl, and, on the other hand, an upwardly directed vertical force and a resultant force, said forces being transferred to the abutment surfaces via the shaft pivots.
  • the contact points of the pawl on the drive rail and the carriage respectively can thus be considered as pivot points.
  • the resultant force is therewith directed against the respective abutment surface in a sector that lies above the normal to the plane through the abutment surface at the contact point of respective shaft pivot, which means that the shaft pivots are pressed against the lower part of the opening.
  • the weight of the carriage with associated floor scrapers is sufficient to prevent the carriage from being lifted up from the drive rail.
  • the carriage with the scrapers will in that way move along the drive rail at a uniform speed.
  • the invention is not limited to the discharge of manure from a manure passageway, but may also be applied to other types of scrapers and with materials other than manure. It is also within the scape of the invention to use it for other feeding arrangements in which a drive rail is used for carriage movement along a drive rail.
  • Figure 1 shows a carriage and parts of a drive rail included in a device according to the invention, the carriage being partially cut and without the arms belonging to the actual floor scraper for manure.
  • Figure 2 shows the drive rail and the carriage of the fig. 1 device from above.
  • Figure 3 shows an enlarged section of the carriage and the drive rail of fig. 1 .
  • Figure 4 shows the end of the drive rail included in the device according to the invention.
  • the carriage shown in figures 1 and 2 is intended to support floor scrapers on each side of the carriage 1 , principally in a manner known from patent specification EP 0 770 325 and for that reason the scrapers have not been included in the figures.
  • the carriage 1 has a cross-section in the form of an inverted U whose internal width corresponds to the width of a drive rail 2 which is intended to move linearly in steps, forwards and backwards along the floor of a manure passageway, with the carriage 1 straddling the drive rail 2.
  • the drive rail 2 per se has a U- shaped cross section and is placed with the legs of the U in abutment with the floor and is moved with the aid of an hydraulic piston-cylinder device which is not shown in the figures.
  • the carriage 1 is provided with a pawl 3 mounted on a horizontal shaft 4 which includes shaft pivots 4.1 extending from the ends of the shaft 4, through openings 5 on each long side of the carriage 1.
  • the carriage 1 is moved in one of the directions by bringing the pawl into engagement stepwise with rectangular dogging holes 6 disposed on the upper side of the drive rail 2 along its length.
  • the respective opening 5 for the respective shaft pivot 4.1 has an elongate shape as seen vertically and include abutment surfaces 5.1 extending in a plane P that slopes downwards and outwards at an angle A to the vertical from the upper part of the opening 5 , there having a width which only slightly exceeds the diameter of the respective shaft pivot 4.1.
  • the angle of inclination A is 20°, although the angle may be greater or larger than 20°.
  • the drive rail 2 exerts on the pawl 3, on the one hand a horizontal force F1 and, on the other hand, an upwardly directed vertical force F2 and a resultant force F3, said forces being transferred to the abutment surfaces 5.1 via the shaft pivots 4.1.
  • the contact points of the pawl 3 on the drive rail 2 and the carriage 1 respectively can thus be considered as hinges.
  • the resulting force F3 is thereby directed against the respective abutment surface 5.1 in a sector that lies above the normal N to the plane P through the abutment surface 5.1 at the respective contact point, which means that the shaft pivots 4.1 are pressed against the lower part of the opening 5.
  • the combined weight of the carriage 1 with the associated floor scrapers is sufficient to prevent the carriage 1 from being lifted up from the drive rail 2.
  • the carriage 1 and its scrapers will thereby move along the drive rail 2 at a uniform speed.
  • the length of the pawl 3 between the dogging point on the drive rail 2 and the contact point on the respective abutment surface 5.1 in the respective opening 5 corresponds to about three times the vertical distance between the drive rail 2 and the respective contact point on the respective abutment surface 5.1.
  • the shorter the pawl 3 length the greater the intrinsic weight of the carriage 1 with its associated scrapers required to prevent lifting of the carriage at excessively low resistance to the scrapers.
  • a practical lower limit is two times said distance.
  • the resulting force F3 will be directed in a sector that lies beneath the normal N to the plane P through the abutment surfaces 5, whereby the shaft pivots 4.1 slide up in the upper narrower part of respective openings 5 to a height such as to cause the pawl 3 to be moved to the opposite side of the shaft 4 by the forward movement of the drive rail 2, and there re-engage with the dogging holes 6 upon return movement of the drive rail 2.
  • the carriage 1 is thereby caused to move away from the obstacle concerned.
  • the height of the drive rail 2 shall be sufficient to prevent the long sides of the carriage 1 from being lifted above the upper side of the drive rail 2, so that the carriage will still be guided laterally by the drive rail 2 even when in a raised position.
  • the pawl 3 switches automatically to an opposite position and feeds the carriage 1 in the reverse direction. This can also be obtained by providing a longer switching hole 6.1 at one or both ends of the rail 2.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Zoology (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Housing For Livestock And Birds (AREA)
  • Treatment Of Sludge (AREA)

Abstract

La présente invention a trait à un dispositif de déplacement d'un racloir de fumier, le dispositif comportant un chariot (1) qui supporte un ou plusieurs racloirs de plancher qui est/sont en saillie à partir du chariot (1), une glissière (2) le long de laquelle le chariot (1) se déplace et qui est reliée au chariot (1) par un moyen d'encliquetage (3) monté au chariot qui est prévu pour l'actionnement par des moyens de crabotage (6) disposés sur la glissière (2), grâce à quoi le cliquet (3) est entraîné par un arbre (4) qui comporte des pivots d'arbre (4.1) qui sont disposés chacun dans une ouverture (5) respective allongée se prolongeant à la verticale. L'ouverture (5) respective comprend pour le pivot correspondant (4.1) des surfaces de butée (5.1) qui s'étendent dans deux plans (P) inclinés vers le bas et vers l'extérieur à un angle (A) à partir de chaque côté d'une portion supérieure de l'ouverture (5) respective. La ligne de liaison entre le point de contact du cliquet (3) sur la glissière (2) et les points de contact sur les surfaces de butées (5.1) est orientée vers la surface de butée (5.1) respective dans un secteur qui se trouve au dessus d'un normale (N) au plan (P) à travers la surface de butée (5.1) au point de contact respectif sur la surface de butée (5.1) respective.
PCT/SE2002/002338 2001-12-17 2002-12-16 Dispositif de deplacement pas a pas d'un racloir de fumier WO2003056906A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2002359141A AU2002359141A1 (en) 2001-12-17 2002-12-16 Device for movement in steps of a manure scraper
EP02793653A EP1467612A1 (fr) 2001-12-17 2002-12-16 Dispositif de deplacement pas a pas d'un racloir de fumier

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0104253-0 2001-12-17
SE0104253A SE521012C2 (sv) 2001-12-17 2001-12-17 Anordning för stegvis förflyttning av en gödselskrapa

Publications (1)

Publication Number Publication Date
WO2003056906A1 true WO2003056906A1 (fr) 2003-07-17

Family

ID=20286355

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2002/002338 WO2003056906A1 (fr) 2001-12-17 2002-12-16 Dispositif de deplacement pas a pas d'un racloir de fumier

Country Status (4)

Country Link
EP (1) EP1467612A1 (fr)
AU (1) AU2002359141A1 (fr)
SE (1) SE521012C2 (fr)
WO (1) WO2003056906A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE357128B (fr) * 1971-10-14 1973-06-18 Alfa Laval Ab
DE2621624A1 (de) * 1975-06-02 1976-12-16 Alfa Laval Ab Entmister
GB2265293A (en) * 1992-03-25 1993-09-29 Donovan John O Dung scraper systems
EP0770325A1 (fr) * 1995-10-26 1997-05-02 O'Donovan, John Racleur de lisier

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE357128B (fr) * 1971-10-14 1973-06-18 Alfa Laval Ab
DE2621624A1 (de) * 1975-06-02 1976-12-16 Alfa Laval Ab Entmister
GB2265293A (en) * 1992-03-25 1993-09-29 Donovan John O Dung scraper systems
EP0770325A1 (fr) * 1995-10-26 1997-05-02 O'Donovan, John Racleur de lisier

Also Published As

Publication number Publication date
EP1467612A1 (fr) 2004-10-20
SE0104253L (sv) 2003-06-18
SE521012C2 (sv) 2003-09-23
AU2002359141A1 (en) 2003-07-24
SE0104253D0 (sv) 2001-12-17

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