EP0646444B1 - Hood for concrete mixer for the protection of the driving motor - Google Patents

Hood for concrete mixer for the protection of the driving motor Download PDF

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Publication number
EP0646444B1
EP0646444B1 EP94420234A EP94420234A EP0646444B1 EP 0646444 B1 EP0646444 B1 EP 0646444B1 EP 94420234 A EP94420234 A EP 94420234A EP 94420234 A EP94420234 A EP 94420234A EP 0646444 B1 EP0646444 B1 EP 0646444B1
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EP
European Patent Office
Prior art keywords
vertical
hood
hood according
walls
secured
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EP94420234A
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German (de)
French (fr)
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EP0646444A1 (en
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Guy Noel
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GUY NOEL Ets
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GUY NOEL Ets
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/18—Mixing in containers to which motion is imparted to effect the mixing
    • B28C5/1825—Mixers of the tilted-drum type, e.g. mixers pivotable about an axis perpendicular to the axis of rotation for emptying
    • B28C5/1856—Details or parts, e.g. drums

Definitions

  • the present invention relates to a concrete mixer cover intended for protection of the electric motor.
  • This cover is provided completely waterproof water and guarantees perfect ventilation of the engine.
  • hoods of this kind which generally include several engine ventilation openings, but they are not waterproof with pressurized water used for cleaning the concrete mixer. Sealing is achieved by means of a seal which is placed between the cover and the cover to prevent the penetration of water from rain.
  • DE-U-90 17 331 discloses a cover for a concrete mixer in which a baffle side is intended for air intake while an exhaust channel substantially vertical is expected. This device is not completely waterproof.
  • the cover according to the present invention aims to be completely watertight from outside, while providing ventilation motor maximum.
  • the concrete mixer cover includes in its lower part a pipe waterproof in the form of a baffle which leads to the electric motor and in its upper part of the conduits which are connected to the outside through a double waterproof baffle, so as to create a substantially vertical ventilation to cool the engine.
  • the cover comprises two vertical and parallel walls joined together. by front and rear faces, a bottom secured to the rear face while its free edge has a vertical cheek which determines with the front face a free space, a gutter shaped in the part bottom of the front panel to come and surround the vertical cheek so to form a baffle-shaped pipe, a first cover sliding mounted inside the walls comprising an air duct, a second cover which covers the first to form another waterproof duct and a double baffle formed by a vertical wall secured to the front face into which the conduits open.
  • a concrete mixer 1 comprising a tank 2 articulated on a chassis 5 and driven in rotation through an electric motor 3 which is protected by a waterproof cover 4.
  • the sealed cover 4 has two vertical and parallel walls 4 a and 4 b which are joined together by means of a front face 4 c and a rear face 4 d .
  • the side walls 4 a and 4 b and the rear face 4 d are integral with a horizontal bottom 4 e , the free edge of which is provided with a vertical cheek 4 f forming with the front face 4 c a free space.
  • the vertical walls 4 a and 4 b have in their upper part an edge 4 r returned inside the cover to form a slide, the function of which will be seen more clearly below.
  • the vertical walls 4 a and 4 b are provided with a device for supporting the electric motor 3, while the rear face 4 d is fixed to one of the vertical uprights 5 a of the chassis 5.
  • the front face 4 c is shaped in its lower part to present a gutter 4 g in the shape of a U, each of the free ends of which is integral with the vertical walls 4 a and 4 b .
  • the gutter 4 g is provided to surround the vertical cheek 4 f at a certain distance from the latter.
  • one of the vertical branches of the gutter 4 g stops at a certain distance from the bottom 4 e to determine a channel in the form of a baffle so that the fresh air can penetrate inside the cover 4 (arrow F1).
  • the bottom of the 4 g gutter is pierced with a 4 h evacuation hole for the evacuation of water, as we will see better below.
  • the front face 4 c is pierced in its upper part with an opening 4 i elongated horizontally which opens into a free space delimited by a vertical wall 4 j secured to said face 4 c so as to conform a double baffle 4 y .
  • the vertical wall 4 j is disposed inside the cover 4 parallel to the front face 4 c and comprises in its upper part the inclined face 4 k directed in the direction of said face to delimit the opening of the double baffle 4 y .
  • Inside the double baffle 4 there are attached to the wall 4 j and the front face 4 g of the deflectors 4 u . 4 the double baffle is provided sealed and completely isolated from the interior of the cover 4 in which is fixed the electric motor 3.
  • the cover 4 has two covers 4 l and 4 m which make the inside of the cover completely sealed.
  • the first cover 4 l consists of two parallel and superimposed plates 4 n , 4 p of different length which delimit a duct 4 g which communicates on the one hand with the internal space of the cover and on the other hand with the double baffle 4 y for the evacuation of the hot air produced by the electric motor 3 (arrow F2).
  • the free edges 4 z of the first cover 4 l and more particularly those of the plate 4 n are returned inside the cover 4 to cooperate with the slides 4 r of each of the walls 4 a , 4 b to make a tight connection to waters.
  • the first cover 4 l slides inside the slides 4 r so that the plate 4 n abuts against the rear face 4 d , while the opposite edge and perpendicular to the walls 4 a , 4 b of the another plate 4 p comes to bear on the inclined face 4 k of the vertical wall 4 j , just before the opening of the double baffle 4 y .
  • the second cover 4 m has a continuous edge 4 s which covers the vertical walls 4 a and 4 b and the faces 4 c and 4 d .
  • the superimposition of the two covers 4 l and 4 m makes it possible to constitute with the plate 4 n a second pipe 4 t for the evacuation of the water coming from the outside.
  • the rear face 4 d is fixed in its upper part to the upright 5 a of the chassis 5 by means of a sealed spacer 6.
  • the latter allows the guiding of the drive shaft of a pulley 7, the free end is integral with a pinion 8 which meshes with a ring gear known per se, fixed to the tank 2.
  • the spacer 6 is welded in the upper part of the upright 5 a and has a shoulder 6 a which cooperates with an opening in the rear face 4 d .
  • the rear face 4 d is fixed to the spacer 6 by means of an O-ring 6 b with a diameter slightly smaller than that of the shoulder 6 a .
  • a washer 6 c comes to bear on the seal 6 b by means of a circlip 6 d which ensures its compression between the rear face 4 d and the washer 6 c .
  • the structure of the cover 4 allows ventilation of the motor 3 by a substantially vertical displacement of air, that is to say that the fresh air enters along the arrow F1 to escape into the upper part by l 'through the conduit 4 g of the first cover 4 l according to arrow F2.
  • the fresh air circulates in the baffle formed by the bottom 4 e , the cheek 4 f and the gutter 4 g of the front face 4 c , this fresh air is sucked in by the fan 3 a of the motor 3 to come to cool it.
  • the hot air is evacuated through the duct 4 g and the double baffle 4 formed there by the front face 4 l and the wall 4 j to open outside the cover 4 via the opening 4 i .
  • the upper and lower baffles are completely sealed against rainwater and cleaning water which is sprayed under pressure.
  • the opening of the lower baffle that is to say between the bottom 4 e and the gutter 4 g
  • the latter constitutes a receptacle which forms a reserve of water.
  • This reserve prevents splashes from entering the interior and coming into contact with the motor 3.
  • the 4- hour hole in the bottom of the gutter 4 g allows the drainage of retained water.
  • the diameter of the hole 4 h is provided so that the flow rate of the evacuated water is lower than that injected.
  • the gutter 4 g constitutes a sort of siphon to retain the cleaning water sent under pressure in order to prevent the splashes from going back up inside the cover 4.
  • the mounting structure of the two covers 4 l and 4 m on the vertical walls 4 a and 4 b prevents the projected water from entering the inside of the cover 4.
  • the turned edges 4 z of the cover 4 l allow, by cooperating with the slides 4 r , to retain the splashing of the water sent under pressure.
  • the structure of the cover 4 described above allows the use of a motor 3 without protection, since it is completely protected from water either rain or cleaning.
  • the ventilation ducts allow at the same time the evacuation of cleaning or rain water to protect the engine electric 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Accessories For Mixers (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Motor Or Generator Frames (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Body Structure For Vehicles (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Food-Manufacturing Devices (AREA)

Abstract

The concrete mixer hood comprises means for the ventilation of the electric motor (3) which are proof against any ingress of water from outside. <IMAGE>

Description

La présente invention a trait à un capot de bétonnière destiné à la protection du moteur électrique. Ce capot est prévu totalement étanche à l'eau et garantit une ventilation parfaite du moteur.The present invention relates to a concrete mixer cover intended for protection of the electric motor. This cover is provided completely waterproof water and guarantees perfect ventilation of the engine.

On connaít des capots de ce genre qui comprennent généralement plusieurs ouvertures pour la ventilation du moteur, mais ils ne sont pas étanches à l'eau sous pression utilisée pour le nettoyage de la bétonnière. L'étanchéité est réalisée par l'intermédiaire d'un joint qui est placé entre le couvercle et le capot afin d'éviter la pénétration des eaux de pluie.There are known hoods of this kind which generally include several engine ventilation openings, but they are not waterproof with pressurized water used for cleaning the concrete mixer. Sealing is achieved by means of a seal which is placed between the cover and the cover to prevent the penetration of water from rain.

Dans la plupart des cas, les moteurs électriques ne sont pas protégés à l'encontre de l'eau sous pression, ce qui rend l'appareil dangereux pour l'utilisateur. En effet, lors du nettoyage de la bétonnière, l'eau pénétrant dans le capot peut provoquer un court-circuit. En outre, la ventilation du moteur ne permet pas un bon refroidissement, si bien que ledit moteur chauffe.In most cases, electric motors are not protected against against pressurized water, which makes the device dangerous for the user. Indeed, during the cleaning of the concrete mixer, the water penetrating inside the hood may cause a short circuit. In addition, the ventilation engine does not cool well, so said motor heats up.

DE-U-90 17 331 divulgue un capot pour bétonnière dans lequel une chicane latérale est destinée à l'entrée de l'air alors qu'un canal d'évacuation sensiblement vertical est prévu. Ce dispositif n'est pas complètement étanche.DE-U-90 17 331 discloses a cover for a concrete mixer in which a baffle side is intended for air intake while an exhaust channel substantially vertical is expected. This device is not completely waterproof.

C'est à ces inconvénients qu'entend plus particulièrement remédier la présente invention.It is to these drawbacks that the present invention.

Le capot suivant la présente invention a pour but d'être complètement étanche à l'eau provenant de l'extérieur, tout en procurant une ventilation maximale du moteur.The cover according to the present invention aims to be completely watertight from outside, while providing ventilation motor maximum.

Le capot de bétonnière comprend dans sa partie inférieure une canalisation étanche en forme de chicane qui débouche sur le moteur électrique et dans sa partie supérieure des conduits qui sont reliés à l'extérieur par l'intermédiaire d'une double chicane étanche, de manière à créer une ventilation sensiblement verticale pour refroidir le moteur.The concrete mixer cover includes in its lower part a pipe waterproof in the form of a baffle which leads to the electric motor and in its upper part of the conduits which are connected to the outside through a double waterproof baffle, so as to create a substantially vertical ventilation to cool the engine.

En outre le capot comprend deux parois verticales et parallèles réunies par des faces avant et arrière, un fond solidaire de la face arrière tandis que son bord libre comporte une joue verticale qui détermine avec la face avant un espace libre, une gouttière conformée dans la partie inférieure de la face avant pour venir entourer la joue verticale afin de constituer une canalisation en forme de chicane, un premier couvercle monté coulissant à l'intérieur des parois comprenant un conduit d'aération, un second couvercle qui recouvre le premier pour former un autre conduit étanche et une double chicane constituée par une paroi verticale solidaire de la face avant dans laquelle débouchent les conduits.In addition, the cover comprises two vertical and parallel walls joined together. by front and rear faces, a bottom secured to the rear face while its free edge has a vertical cheek which determines with the front face a free space, a gutter shaped in the part bottom of the front panel to come and surround the vertical cheek so to form a baffle-shaped pipe, a first cover sliding mounted inside the walls comprising an air duct, a second cover which covers the first to form another waterproof duct and a double baffle formed by a vertical wall secured to the front face into which the conduits open.

Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer :

  • Fig. 1 est une vue en perspective montrant une bétonnière pourvue d'un capot suivant la présente invention.
  • Fig. 2 est une coupe illustrant le capot étanche et les conduits d'aération du moteur.
  • Fig. 3 est une coupe suivant III-III (fig. 2) représentant les premier et second couvercles du capot.
    • The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it presents and the advantages which it is capable of providing:
  • Fig. 1 is a perspective view showing a concrete mixer provided with a cover according to the present invention.
  • Fig. 2 is a section illustrating the watertight cover and the engine ventilation ducts.
  • Fig. 3 is a section along III-III (fig. 2) showing the first and second cover covers.

    • On a représenté en fig. 1 et 2 une bétonnière 1 comprenant une cuve 2 articulée sur un châssis 5 et entraínée en rotation par l'intermédiaire d'un moteur électrique 3 qui est protégé par un capot étanche 4.There is shown in fig. 1 and 2 a concrete mixer 1 comprising a tank 2 articulated on a chassis 5 and driven in rotation through an electric motor 3 which is protected by a waterproof cover 4.

    Le capot étanche 4 comporte deux parois verticales et parallèles 4a et 4b qui sont réunies par l'intermédiaire d'une face avant 4c et d'une face arrière 4d. Les parois latérales 4a et 4b et la face arrière 4d sont solidaires d'un fond horizontal 4e dont le bord libre est pourvu d'une joue verticale 4f formant avec la face avant 4c un espace libre.The sealed cover 4 has two vertical and parallel walls 4 a and 4 b which are joined together by means of a front face 4 c and a rear face 4 d . The side walls 4 a and 4 b and the rear face 4 d are integral with a horizontal bottom 4 e , the free edge of which is provided with a vertical cheek 4 f forming with the front face 4 c a free space.

    Les parois verticales 4a et 4b comportent dans leur partie supérieure un bord 4r retourné à l'intérieur du capot pour former une glissière dont on verra mieux plus loin la fonction.The vertical walls 4 a and 4 b have in their upper part an edge 4 r returned inside the cover to form a slide, the function of which will be seen more clearly below.

    Les parois verticales 4a et 4b sont pourvues d'un dispositif pour soutenir le moteur électrique 3, tandis que la face arrière 4d est fixée sur l'un des montants verticaux 5a du châssis 5.The vertical walls 4 a and 4 b are provided with a device for supporting the electric motor 3, while the rear face 4 d is fixed to one of the vertical uprights 5 a of the chassis 5.

    La face avant 4c est conformée dans sa partie inférieure pour présenter une gouttière 4g en forme de U dont chacune des extrémités libres est solidaire des parois verticales 4a et 4b. La gouttière 4g est prévue pour entourer la joue verticale 4f à une certaine distance de celle-ci. The front face 4 c is shaped in its lower part to present a gutter 4 g in the shape of a U, each of the free ends of which is integral with the vertical walls 4 a and 4 b . The gutter 4 g is provided to surround the vertical cheek 4 f at a certain distance from the latter.

    En effet, l'une des branches verticales de la gouttière 4g s'arrête à une certaine distance du fond 4e pour déterminer une canalisation en forme de chicane afin que l'air frais puisse pénétrer à l'intérieur du capot 4 (flèche F1). Le fond de la gouttière 4g est percé d'un trou d'évacuation 4h pour l'évacuation des eaux, comme on le verra mieux plus loin.Indeed, one of the vertical branches of the gutter 4 g stops at a certain distance from the bottom 4 e to determine a channel in the form of a baffle so that the fresh air can penetrate inside the cover 4 (arrow F1). The bottom of the 4 g gutter is pierced with a 4 h evacuation hole for the evacuation of water, as we will see better below.

    La face avant 4c est percée dans sa partie supérieure d'une ouverture 4i allongée horizontalement qui débouche dans un espace libre délimité par une paroi verticale 4j solidaire de ladite face 4c de manière à conformer une double chicane 4y. La paroi verticale 4j est disposée à l'intérieur du capot 4 parallèlement à la face avant 4c et comporte dans sa partie supérieure au pan incliné 4k dirigé en direction de ladite face pour délimiter l'ouverture de la double chicane 4y. A l'intérieur de la double chicane 4y sont fixés sur la paroi 4j et la face avant 4g des déflecteurs 4u. La double chicane 4y est prévue étanche et complètement isolée de l'espace interne du capot 4 dans lequel est fixé le moteur électrique 3.The front face 4 c is pierced in its upper part with an opening 4 i elongated horizontally which opens into a free space delimited by a vertical wall 4 j secured to said face 4 c so as to conform a double baffle 4 y . The vertical wall 4 j is disposed inside the cover 4 parallel to the front face 4 c and comprises in its upper part the inclined face 4 k directed in the direction of said face to delimit the opening of the double baffle 4 y . Inside the double baffle 4 there are attached to the wall 4 j and the front face 4 g of the deflectors 4 u . 4 the double baffle is provided sealed and completely isolated from the interior of the cover 4 in which is fixed the electric motor 3.

    Le capot 4 comporte deux couvercles 4l et 4m permettant de rendre l'intérieur dudit capot complètement étanche. Le premier couvercle 4l est constitué de deux plaques parallèles et superposées 4n, 4p de longueur différente qui délimitent un conduit 4g qui communique d'une part avec l'espace interne du capot et d'autre part avec la double chicane 4y pour l'évacuation de l'air chaud produit par le moteur électrique 3 (flèche F2). Les bords libres 4z du premier couvercle 4l et plus particulièrement ceux de la plaque 4n sont retournés à l'intérieur du capot 4 pour coopérer avec les glissières 4r de chacune des parois 4a, 4b pour réaliser une liaison étanche aux eaux. En effet, le premier capot 4l coulisse à l'intérieur des glissières 4r pour que la plaque 4n vienne en butée contre la face arrière 4d, tandis que le bord opposé et perpendiculaire aux parois 4a, 4b de l'autre plaque 4p vient prendre appui sur le pan incliné 4k de la paroi verticale 4j, juste avant l'ouverture de la double chicane 4y.The cover 4 has two covers 4 l and 4 m which make the inside of the cover completely sealed. The first cover 4 l consists of two parallel and superimposed plates 4 n , 4 p of different length which delimit a duct 4 g which communicates on the one hand with the internal space of the cover and on the other hand with the double baffle 4 y for the evacuation of the hot air produced by the electric motor 3 (arrow F2). The free edges 4 z of the first cover 4 l and more particularly those of the plate 4 n are returned inside the cover 4 to cooperate with the slides 4 r of each of the walls 4 a , 4 b to make a tight connection to waters. Indeed, the first cover 4 l slides inside the slides 4 r so that the plate 4 n abuts against the rear face 4 d , while the opposite edge and perpendicular to the walls 4 a , 4 b of the another plate 4 p comes to bear on the inclined face 4 k of the vertical wall 4 j , just before the opening of the double baffle 4 y .

    Le second couvercle 4m comporte un bord continu 4s qui vient recouvrir les parois verticales 4a et 4b et les faces 4c et 4d. La superposition des deux couvercles 4l et 4m permet de constituer avec la plaque 4n un second conduit 4t pour l'évacuation de l'eau provenant de l'extérieur. The second cover 4 m has a continuous edge 4 s which covers the vertical walls 4 a and 4 b and the faces 4 c and 4 d . The superimposition of the two covers 4 l and 4 m makes it possible to constitute with the plate 4 n a second pipe 4 t for the evacuation of the water coming from the outside.

    En effet, le bord perpendiculaire aux parois 4a, 4b de la plaque 4m se trouvant à l'opposé de celui prenant appui contre la face arrière 4d vient s'arrêter juste au-dessus de celui de la plaque 4p, de manière que le conduit 4t débouche à l'intérieur de la double chicane 4y.Indeed, the edge perpendicular to the walls 4 a , 4 b of the 4 m plate being opposite to that which bears against the rear face 4 d comes to stop just above that of the 4 p plate, so that the conduit 4 t opens out inside the double baffle 4 y .

    La face arrière 4d est fixée dans sa partie supérieure sur le montant 5a du châssis 5 par l'intermédiaire d'une entretoise étanche 6. Cette dernière permet le guidage de l'axe d'entraínement d'une poulie 7 dont l'extrémité libre est solidaire d'un pignon 8 qui engrène avec une couronne dentée connue en soi, fixée sur la cuve 2.The rear face 4 d is fixed in its upper part to the upright 5 a of the chassis 5 by means of a sealed spacer 6. The latter allows the guiding of the drive shaft of a pulley 7, the free end is integral with a pinion 8 which meshes with a ring gear known per se, fixed to the tank 2.

    L'entretoise 6 est soudée dans la partie supérieure du montant 5a et comporte un épaulement 6a qui coopère avec une ouverture ménagée dans la face arrière 4d. La fixation de la face arrière 4d sur l'entretoise 6 est réalisée par l'intermédiaire d'un joint torique 6b d'un diamètre légèrement inférieur à celui de l'épaulement 6a. Une rondelle 6c vient prendre appui sur le joint 6b par l'intermédiaire d'un circlips 6d qui assure sa compression entre la face arrière 4d et la rondelle 6c.The spacer 6 is welded in the upper part of the upright 5 a and has a shoulder 6 a which cooperates with an opening in the rear face 4 d . The rear face 4 d is fixed to the spacer 6 by means of an O-ring 6 b with a diameter slightly smaller than that of the shoulder 6 a . A washer 6 c comes to bear on the seal 6 b by means of a circlip 6 d which ensures its compression between the rear face 4 d and the washer 6 c .

    On note que la structure du capot 4 permet une ventilation du moteur 3 par un déplacement d'air sensiblement vertical, c'est-à-dire que l'air frais entre suivant la flèche F1 pour s'évacuer dans la partie supérieure par l'intermédiaire du conduit 4g du premier couvercle 4l suivant la flèche F2. Ainsi, l'air frais circule dans la chicane formée par le fond 4e, la joue 4f et la gouttière 4g de la face avant 4c, cet air frais est aspiré par le ventilateur 3a du moteur 3 pour venir le refroidir. L'air chaud est évacué par le conduit 4g et la double chicane 4y formée par la face avant 4l et la paroi 4j pour déboucher à l'extérieur du capot 4 par l'intermédiaire de l'ouverture 4i.It is noted that the structure of the cover 4 allows ventilation of the motor 3 by a substantially vertical displacement of air, that is to say that the fresh air enters along the arrow F1 to escape into the upper part by l 'through the conduit 4 g of the first cover 4 l according to arrow F2. Thus, the fresh air circulates in the baffle formed by the bottom 4 e , the cheek 4 f and the gutter 4 g of the front face 4 c , this fresh air is sucked in by the fan 3 a of the motor 3 to come to cool it. . The hot air is evacuated through the duct 4 g and the double baffle 4 formed there by the front face 4 l and the wall 4 j to open outside the cover 4 via the opening 4 i .

    On remarque que les chicanes supérieure et inférieure sont totalement étanches aux eaux de pluie et à l'eau de nettoyage qui est projetée sous pression. En effet, lorsque de l'eau sous pression est dirigée vers l'ouverture de la chicane inférieure, c'est-à-dire entre le fond 4e et la gouttière 4g, cette dernière constitue un réceptacle qui forme une réserve d'eau. Cette réserve évite aux éclaboussures de pénétrer à l'intérieur et de venir en contact avec le moteur 3. Le trou 4h ménagé dans le fond de la gouttière 4g permet l'évacuation de l'eau retenue. Le diamètre du trou 4h est prévu pour que le débit de l'eau évacuée soit inférieur à celui injecté.Note that the upper and lower baffles are completely sealed against rainwater and cleaning water which is sprayed under pressure. In fact, when pressurized water is directed towards the opening of the lower baffle, that is to say between the bottom 4 e and the gutter 4 g , the latter constitutes a receptacle which forms a reserve of water. This reserve prevents splashes from entering the interior and coming into contact with the motor 3. The 4- hour hole in the bottom of the gutter 4 g allows the drainage of retained water. The diameter of the hole 4 h is provided so that the flow rate of the evacuated water is lower than that injected.

    Lorsque de l'eau est projetée sous le capot 4m, elle est dirigée par le conduit 4t dans la double chicane 4y pour son évacuation par l'ouverture 4i. De même, lorsque de l'eau est dirigée en direction de l'ouverture 4i, les déflecteurs 4u de la double chicane 4y empêchent la remontée de celle-ci dans le conduit 4g. Ensuite, l'eau retenue à l'intérieur de la double chicane 4y est évacuée par l'ouverture 4i.When water is sprayed under the hood 4 m , it is directed through the conduit 4 t into the double baffle 4 y for its evacuation through the opening 4 i . Similarly, when water is directed towards the opening 4 i, baffles 4 u of the double baffle 4 y prevent the rise thereof in the conduit 4 g. Then, the water retained within the double baffle 4 is removed through the opening 4 i.

    La gouttière 4g constitue une sorte de siphon pour retenir l'eau de nettoyage envoyée sous pression afin d'éviter que les éclaboussures remontent à l'intérieur du capot 4.The gutter 4 g constitutes a sort of siphon to retain the cleaning water sent under pressure in order to prevent the splashes from going back up inside the cover 4.

    Enfin, la structure de montage des deux couvercles 4l et 4m sur les parois verticales 4a et 4b évite à l'eau projetée de rentrer à l'intérieur du capot 4. En effet, les bords retournés 4z du couvercle 4l permettent, en coopérant avec les glissières 4r, de retenir les éclaboussures de l'eau envoyée sous pression.Finally, the mounting structure of the two covers 4 l and 4 m on the vertical walls 4 a and 4 b prevents the projected water from entering the inside of the cover 4. In fact, the turned edges 4 z of the cover 4 l allow, by cooperating with the slides 4 r , to retain the splashing of the water sent under pressure.

    La structure du capot 4 décrit précédemment permet d'utiliser un moteur 3 sans protection, puisque celui-ci est complètement protégé des eaux extérieures soit de pluie, soit de nettoyage.The structure of the cover 4 described above allows the use of a motor 3 without protection, since it is completely protected from water either rain or cleaning.

    On constate ainsi que les conduits d'aération permettent en même temps l'évacuation des eaux de nettoyage ou de pluie pour protéger le moteur électrique 3.It can thus be seen that the ventilation ducts allow at the same time the evacuation of cleaning or rain water to protect the engine electric 3.

    Claims (9)

    1. Concrete mixer hood intended to protect the electric drive motor, characterized in that it comprises at its lower part a sealed passage in the form of a chicane which opens to the electric motor (3), and in its upper part superimposed ducts (4g and 4t), one (4g) of which is in communication with the interior space of the hood, and the other (4t) of which is able to receive water coming from the outside, the said two ducts being connected to the outside by means of a leaktight double chicane (4y) so as to create a more or less vertical draft for cooling the said motor.
    2. Hood according to Claim 1, characterized in that it comprises two vertical and parallel walls (4a, 4b) joined together by front and rear faces (4c and 4d), a bottom (4e) secured to the rear face (4d) while its free edge has a vertical cheek (4f) which, with the front face (4c) defines an empty space, a gutter (4g) shaped into the lower part of the front face (4c) for wrapping round the vertical cheek (4f) so as to form a chicane-shaped passage, a first lid (4l) mounted to slide inside the walls (4a, 4b) comprising a ventilation duct (4g), a second lid (4m) which covers the first (4l) to form another leaktight duct (4t) and a double chicane (4y) consisting of a vertical wall (4j) secured to the front face (4c) into which the ducts (4g and 4t) open.
    3. Hood according to Claim 2, characterized in that the rear face (4d) is secured to a vertical upright (5a) of the chassis (5) by means of a spacer piece (6) on which there is an O-ring seal (6b) which is compressed by a washer (6c) and a circlip (6d) so that the attachment is sealed against outside water.
    4. Hood according to Claim 2, characterized in that the vertical walls (4a and 4b) comprise, at their upper parts, edges (4r) turned towards the inside of the hood (4) to form slideways in which the edges (4z) of the first lid (4l) slide, so as to form a connection which is sealed against outside water.
    5. Hood according to Claim 2, characterized in that the lid (4l) comprises two superimposed and parallel plates (4m, 4p) of different lengths for delimiting the ventilation duct (4g).
    6. Hood according to Claim 5, characterized in that one of the edges which are free and perpendicular to the walls (4a, 4b) of the plate (4p) bears against an inclined plane (4k) secured to the vertical wall (4j).
    7. Hood according to Claim 5, characterized in that one of the edges which are free and perpendicular to the walls (4a, 4b) of the plate (4n) is in abutment against the rear face (4d), whereas the opposite edge stops just above that of the plate (4p) in the region of the inclined plane (4k).
    8. Hood according to Claim 1, characterized in that the double chicane (4y) comprises horizontal deflectors (4u) secured to the face (4c) and to the wall (4j).
    9. Hood according to Claim 5, characterized in that the bottom of the gutter (4g) is pierced with a hole (4h) for removing the water.
    EP94420234A 1993-09-07 1994-08-30 Hood for concrete mixer for the protection of the driving motor Expired - Lifetime EP0646444B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9310832A FR2709806B1 (en) 1993-09-07 1993-09-07 Concrete mixer cover to protect the drive motor.
    FR9310832 1993-09-07

    Publications (2)

    Publication Number Publication Date
    EP0646444A1 EP0646444A1 (en) 1995-04-05
    EP0646444B1 true EP0646444B1 (en) 1998-08-12

    Family

    ID=9450766

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP94420234A Expired - Lifetime EP0646444B1 (en) 1993-09-07 1994-08-30 Hood for concrete mixer for the protection of the driving motor

    Country Status (5)

    Country Link
    EP (1) EP0646444B1 (en)
    AT (1) ATE169552T1 (en)
    DE (1) DE69412407T2 (en)
    ES (1) ES2120592T3 (en)
    FR (1) FR2709806B1 (en)

    Cited By (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    RU179022U1 (en) * 2017-10-24 2018-04-25 Общество с ограниченной ответственностью "МиК" MIXER
    RU198226U1 (en) * 2019-09-10 2020-06-25 Сергей Николаевич Медведев MIXER
    RU210624U1 (en) * 2021-10-15 2022-04-22 федеральное государственное бюджетное образовательное учреждение высшего образования "Ульяновский государственный технический университет" MIXER

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB2559335A (en) * 2017-01-30 2018-08-08 John Batty Adrian A concrete mixer cover

    Family Cites Families (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB780426A (en) * 1954-06-02 1957-07-31 Parker Ltd Frederick Improvements in concrete mixers
    DE9017331U1 (en) * 1990-12-21 1991-03-21 Lescha Maschinenfabrik GmbH & Co KG, 8900 Augsburg mixer

    Cited By (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    RU179022U1 (en) * 2017-10-24 2018-04-25 Общество с ограниченной ответственностью "МиК" MIXER
    RU198226U1 (en) * 2019-09-10 2020-06-25 Сергей Николаевич Медведев MIXER
    RU210624U1 (en) * 2021-10-15 2022-04-22 федеральное государственное бюджетное образовательное учреждение высшего образования "Ульяновский государственный технический университет" MIXER

    Also Published As

    Publication number Publication date
    ATE169552T1 (en) 1998-08-15
    DE69412407T2 (en) 1999-03-18
    EP0646444A1 (en) 1995-04-05
    DE69412407D1 (en) 1998-09-17
    ES2120592T3 (en) 1998-11-01
    FR2709806A1 (en) 1995-03-17
    FR2709806B1 (en) 1995-11-24

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