NO156441B

NO156441B - PNEUMATIC CONTROL DEVICE.

Info

Publication number: NO156441B
Application number: NO832471A
Authority: NO
Inventors: Robert Chappez
Original assignee: Oerlikon Buehrle Ag
Priority date: 1982-07-23
Filing date: 1983-07-06
Publication date: 1987-06-15
Also published as: NO156441C; ES524367A0; DE3361482D1; EP0099597B1; ES8406672A1; EP0099597A1; ATE16911T1; NO832471L

Abstract

1. Pneumatic control device on rail vehicles for controlling the pressure in pneumatic spring elements (1, 1'), having a pressure differential valve (2) connected to the pneumatic spring elements and containing two pressure chambers (31, 32) separated by a piston (30), which, on both sides, is provided in each case with a ram (37), and two valve chambers (35) which are arranged on both sides towards the end face of the piston (30), are connected in each case to pressure chambers (31, 33) located on the other side of the piston (30) and are connected to one of the pneumatic spring elements (1, 1'), characterized in that the valve chambers (35) each have a valve (23, 24) which, at a certain excess pressure in the connected pressure chamber (32, 31), is opened by the ram (37) against the pressure of a spring (25, 26) in order to let off the excess pressure to the atmosphere.

Description

Kunstgjødselsspreder. Fertilizer spreader.

Foreliggende oppfinnelse angår en spredemaskin for kunstgjødsel eller lignende, hvor matebeholderens bunn dannes av en sylindrisk, mot matebeholderen åpen renne, hvori roterer en matevalse, som mater ut det stoff som skal spredes gjennom mateåpninger i rennen, hvilke mateåpninger fortrinnsvis er regulerbare og er plasert i rennens bakre vegg og ovenfor et horisontalplan gjennom matevalsens akse. The present invention relates to a spreading machine for artificial fertilizer or the like, where the bottom of the feed container is formed by a cylindrical chute open to the feed container, in which a feed roller rotates, which feeds out the substance to be spread through feed openings in the chute, which feed openings are preferably adjustable and are placed in the rear wall of the chute and above a horizontal plane through the axis of the feed roller.

Ved tidligere kjente spredemaskiner av denne art vider matebeholderen seg jevnt ut til sidene i retning oppad, også i området for mateåpriingene, slik at spredegodset i beholderen ovenfra har fri adgang til mateåpningene. Spesielt ved spredning av kor-net materiale vil dette p.g.a sin tilbøyelig-het til rullings- og flyttingsbevegelser i beholderen påvirke mengden av det materiale som mates ut av mateåpningene i av-gjørende grad. Matningsmengden avhenger også i høy grad av hvor høyt overflaten av spredegodset i beholderen ligger over mateåpningene. In previously known spreading machines of this type, the feed container spreads out evenly to the sides in an upward direction, also in the area of the feed openings, so that the spreading material in the container has free access to the feed openings from above. Especially in the case of spreading granular material, due to its propensity for rolling and moving movements in the container, this will significantly affect the amount of material that is fed out of the feed openings. The amount of feed also depends to a large extent on how high the surface of the spreading material in the container is above the feed openings.

Hensikten med oppfinnelsen er å av-hjelpe disse ulemper og dette er oppnådd derved at den bakre vegg av rennen ovenfor det nevnte horisontalplan gjennom matevalsens akse går innover i retning mot et vertikalplan gjennom matevalsens akse og strekker seg høyst til dette vertikalplan, og at mateåpningene er slik anordnet i denne innadgående vegg av rennen at denne vegg fortsetter et stykke over mateåpningene. Herved bestemmes spredegodsets utmat-ningsmengde alene av mateåpningenes størrelse og av kjørehastigheten på åkeren. Selvom mateåpningene er åpne og spredemaskinen står stille kan spredegodset ikke renne ut av beholderen. The purpose of the invention is to remedy these disadvantages and this has been achieved in that the rear wall of the chute above the aforementioned horizontal plane through the axis of the feed roller goes inwards in the direction of a vertical plane through the axis of the feed roller and extends at most to this vertical plane, and that the feed openings are so arranged in this inward wall of the chute that this wall continues for a distance above the feeding openings. In this way, the output quantity of the spread material is determined solely by the size of the feed openings and the driving speed in the field. Even if the feed openings are open and the spreading machine is stationary, the spreading material cannot flow out of the container.

Oppfinnelsen forklares nærmere i det følgende under henvisning til en på tegningen vist utførelsesform for spredemaski-nens sprede- og mateanordning, som er vist i vertikalsnitt. The invention is explained in more detail in the following with reference to an embodiment shown in the drawing for the spreading and feeding device of the spreading machine, which is shown in vertical section.

Den på tegningen viste spredemaskin er utstyrt med en nedad avsmalnende ma-tebeholder 1, hvis bunn dannes av en sylindrisk, mot matebeholderen 1 åpen renne 5. I rennen er anbragt en med vinger for-synt roterende matevalse 2, hvis rotasjons-retning er angitt med en pil. The spreading machine shown in the drawing is equipped with a downwardly tapering feed container 1, the bottom of which is formed by a cylindrical chute 5 open to the feed container 1. A rotating feed roller 2 equipped with wings is placed in the chute, the direction of rotation of which is indicated with an arrow.

Et mateåpning 4, som kan reguleres i størrelse og eventuelt helt tildekkes, er anordnet i rennens bakre vegg ovenfor et horisontalplan gjennom matevalsens 2 akse. Ifølge oppfinnelsen strekker den bakre vegg av rennen seg innover ovenfor nevnte horisontalplan i retning mot et vertikalplan gjennom matevalsens akse, men strekker seg ikke helt bort til dette vertikalplan. Denne innadgående veggdel kan imidlertid være ført lengre innover mot beholderens 1 indre enn vist på tegningen, men bør høyst strekke seg bort til nevnte vertikalplan, for ikke å forhindre tilførselen av spredegods til rennen fra beholderen i altfor stor grad. Mateåpningen 4 er slik anordnet i denne innadgående veggdel av rennen at denne veggdel fortsetter et stykke over mateåpningen 4, i den hensikt helt å hindre ad-gang til mateåpningen for det ovenfor væ-rende spredegods i beholderen 1. A feeding opening 4, which can be adjusted in size and possibly completely covered, is arranged in the rear wall of the chute above a horizontal plane through the axis of the feeding roller 2. According to the invention, the rear wall of the chute extends inwards in the above-mentioned horizontal plane in the direction towards a vertical plane through the axis of the feed roller, but does not extend all the way to this vertical plane. This inward wall part can, however, be led further inwards towards the interior of the container 1 than shown in the drawing, but should at most extend away to the mentioned vertical plane, so as not to prevent the supply of spreading material to the chute from the container to an excessively large extent. The feed opening 4 is arranged in this inward wall part of the chute so that this wall part continues a bit above the feed opening 4, with the aim of completely preventing access to the feed opening for the above spreading material in the container 1.

For å gjøre spredemaskinen egnet for To make the spreader suitable for

spredning av melaktig og klumpet gjød-ningsstoff er det i tillegg til mateåpningen spreading of milky and lumpy fertilizer is in addition to the feed opening

4 i rennens bakvegg anordnet en ytterligere<1>4 in the rear wall of the gutter arranged a further <1>

regulerbar mateåpning 3 i rennebunnen. adjustable feed opening 3 in the chute base.

Claims

Spreading machine for artificial fertilizers or.

similar, where the bottom of the feed container is formed by a cylindrical, towards the feed container

open chute, in which a feed roller rotates, which

feeds out the material to be spread through feed openings in the chute, which feed-

openings are preferably adjustable and are placed in the rear wall of the chute and above a horizontal plane through the axis of the feed roller, characterized in that the rear wall of the chute above-mentioned horizontal plane goes inwards in the direction of a vertical plane through the axis of the feed roller and extends at most to this vertical plane, and that the feed openings (4) are arranged in this inward wall of the chute so that this wall continues a distance above the feed openings.