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WO1996007017A1 - Moteur a pistons radiaux pour fonctionnement en mode pneumatique - Google Patents

Moteur a pistons radiaux pour fonctionnement en mode pneumatique Download PDF

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Publication number
WO1996007017A1
WO1996007017A1 PCT/CH1995/000179 CH9500179W WO9607017A1 WO 1996007017 A1 WO1996007017 A1 WO 1996007017A1 CH 9500179 W CH9500179 W CH 9500179W WO 9607017 A1 WO9607017 A1 WO 9607017A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
radial piston
piston machine
machine according
face
Prior art date
Application number
PCT/CH1995/000179
Other languages
German (de)
English (en)
Inventor
Mario Soldati
Peter Wandfluh
Original Assignee
Soldati Ag
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 Soldati Ag filed Critical Soldati Ag
Priority to AU31080/95A priority Critical patent/AU3108095A/en
Publication of WO1996007017A1 publication Critical patent/WO1996007017A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B1/00—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements
    • F01B1/06—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with cylinders in star or fan arrangement
    • F01B1/0603—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with cylinders in star or fan arrangement the connection of the pistons with an element being at the outer ends of the cylinders
    • F01B1/061—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with cylinders in star or fan arrangement the connection of the pistons with an element being at the outer ends of the cylinders with two or more series radial piston-cylinder units
    • F01B1/0613—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with cylinders in star or fan arrangement the connection of the pistons with an element being at the outer ends of the cylinders with two or more series radial piston-cylinder units directly located side by side

Definitions

  • the invention relates to a radial piston machine for compressed air operation according to the preamble of the independent claim.
  • DE 1 453 456 (Barrett, G) shows a hydraulic radial piston machine based on the well-known principle. This is steplessly controllable. It has a rotor which is designed as a cylindrical star with pistons movable in the cylinders. The pistons are supported on an outside inclined profile track surface, which consists of several recurring identical track sections and thus describes a regular rolling curve. The pistons slide with their outer piston crowns along the rolling curve.
  • the object of the invention is to produce a radial piston machine according to the aforementioned principle for compressed air operation for use as a gearless direct drive, which continuously delivers the full torque even at the lowest speeds.
  • the usable speed range is to be expanded so that it is not necessary to shift a gearbox.
  • a decisive advantage of the radial piston machine according to the invention is that it can be composed of identical elements in any desired stage configuration.
  • a kind of modular or element construction system enables the production of a drive machine that is precisely matched to the respective purpose in terms of power, torque and speed.
  • Another advantage of the invention is that the drive according to the invention is overload-proof due to pneumatic pressure limitation.
  • Another advantage is that the rotor can be moved freely forwards and backwards without the application of compressed air. This makes it possible, for example if a device is jammed, to be released by hand after the compressed air supply has been switched off.
  • the radial piston machine according to the invention is suitable, for example, as a drive for slow-running apparatus, such as conveyor systems in the chemical and food industries. They are particularly recommended for use in hazardous locations.
  • FIG. 1 shows a cross section, partly in view, of a radial piston machine according to the invention in the region of a rotor disk;
  • Figure 2 shows a stepped longitudinal section
  • Figure 3 is a view of the rear of a rotor disc
  • Figure 4 shows a cross section through the rotor disk
  • FIG. 5 is a view of the front of the rotor disc.
  • the radial piston machine for compressed air operation according to FIG. 1 has a rotor 1 with rotor disks 13, only one of these rotor disks being shown in FIG. 1, with a number of cylinders 11 arranged radially in a star shape, in a plane perpendicular to the rotor axis.
  • the rotor has seven cylinders per rotor disk 13. Cylinder numbers between 3 and 7 are particularly suitable.
  • One piston is freely movable in each cylinder.
  • At the radially outer end of each piston there is a roller 121 for support on a roller guide 2.
  • the rotor 1 represents a kind of hollow shaft, in the interior of which there is a fixed control shaft, which has an axially extending one
  • Compressed air supply 31 an axially extending air discharge 32 and air distribution channels 33 is provided.
  • the pistons are supported via the rollers 121 on a rolling guide 2, which describes a regular rolling curve.
  • Compressed air supplied passes through the feed 31 and a distribution channel 33 into one of the cylinders 11.
  • the piston 12 is pushed outwards.
  • the piston 12 presses against the roller guide via its roller 121.
  • the piston 12 is rolled over the roller 121 over a partial area in which the roller guide is inclined away from the rotor, the rotor being rotated through the corresponding angle.
  • the connection between the connecting channel and the piston closes, so that compressed air is no longer supplied.
  • the connection from the cylinder to another connecting channel 33 which is connected to the air outlet channel 32 connected, open. The air can escape freely from the cylinder and the unloaded piston 12 is pushed back by the rolling guide 2.
  • FIG. 2 shows a radial piston machine according to the invention in a stepped longitudinal section.
  • the gradation A, B, C of the section through the machine corresponds to the three successive rotor disks 13, 13 ', 13 "described below.
  • Each step corresponds to a section through the radial piston machine, which is offset by 120 ° radially with respect to the adjacent one.
  • the radial piston machine according to the invention has a plurality of identical rotor disks 13 which are arranged one behind the other and are rotated relative to one another by a regular angle corresponding to their number of disks.
  • rotor disks 13 which are arranged one behind the other and are rotated relative to one another by a regular angle corresponding to their number of disks.
  • these are each rotated by 120 ° with respect to one another.
  • a cylinder of a first disk thus closes an angle of approximately with the closest cylinder of a second disk 17.1 ° a.
  • the cylindrical rod with the air channels 3 is fixedly arranged on one end face of a housing 5. It extends longitudinally through all three rotor disks 13, 13 ', 13 ".
  • the drive shaft 4 is guided out on the other end face of the housing 5.
  • the drive shaft 4 has a drive disk 41 which is in contact with the rearmost rotor disk 13".
  • the driving plate 41 is provided with wedges 414 which correspond to the similar grooves described below Correspond to rotor disks.
  • the roller guide 2 is directed inward from the circumference of the housing 5. In the embodiment shown, it consists of a fixed roller disk 24, 24 ', 24 "belonging to each rotor disk 13, 13', 13".
  • Each rotor disk has a front end face 131 and a rear end face 132.
  • the rear end face 132 of the first rotor disk 13 is connected to the front end face 131 of the second rotor disk
  • Each further rotor disk is connected in an analogous manner with its front face 131 to the rear face 132 of the preceding rotor disk.
  • the rear end face 132 of a rotor disk 13 is shown. It has at least two, but generally a plurality of mutually opposite, radially extending grooves 134, 134 'and 134' '.
  • the grooves 134 are arranged shifted by predetermined angles with respect to the grooves 13 ′ and with respect to the grooves 134 ′′. These angles correspond to the division, which is achieved by using the desired number of rotor disks in one
  • the angle is 180 ° when using two rotor disks, 120 ° with three rotor disks, 90 ° with four rotor disks and so on. If two seven-cylinder rotor disks are used, the grooves can also include an angle of 25.7 ° according to the arrangement of the cylinders, 17.1 ° for three rotor disks and 12.8 ° for four rotor disks.
  • the rotor disc described which can be used as a modular system and is suitable for use in a rotor with two as well as with three rotor discs, is shown in FIG. 3 '.
  • the rear face 132 of the rotor disk has a shoulder 136 concentrically. In the assembled state, this lies in a concentric recess 136 in the front end face 131 of the adjacent rotor disk.
  • FIG. 4 shows a cross-section through the rotor disk 13. On the one hand, this has its rear end face 132 with shoulder 136 and grooves 132, which has already been described. On the opposite side is the front end 131 with wedges 133 and a concentric annular recess 135. The cylinders 11 are embedded radially from the circumference.
  • FIG. 5 shows the front end face 131 of the rotor disk 13.
  • the described annular concentric recess 135 is clearly visible.
  • this front end face 131 is provided with two radially opposite wedges 133 for engaging in the grooves 134 to 134 "of the adjacent rotor disk.
  • the housing can therefore be built directly in one piece, that is to say the cover between the end faces of the housing 5 can itself be designed as a roller guide 2 on its inside.
  • the cover between the end faces of the housing 5 can itself be designed as a roller guide 2 on its inside.
  • control shaft with the air inlet and outlet is the same and does not have to be rotated and adapted individually for each rotor disk. So it's one simple one
  • Pressure throttle device necessary for regulation.
  • a single channel changeover is also sufficient to reverse the direction of rotation of the radial piston machine. This also guarantees that all rotor disks and therefore all cylinders are supplied with compressed air equally well. When the compressed air supply is stopped, all cylinders are immediately depressurized and all pistons can move freely. Therefore, the rotor is freewheeling immediately after the compressed air is switched off.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

L'invention concerne un moteur à pistons radiaux pour fonctionnement en mode pneumatique à utiliser comme entraînement direct qui puisse fournir le couple complet en continu, même aux régimes les plus bas. A cet effet, la plage utile de régimes doit être élargie, de manière à ce qu'il ne soit pas nécessaire d'intercaler à la suite un réducteur. Ce moteur comprend un rotor (1) pourvu de plusieurs disques (13) identiques. Chaque disque (13) comporte un nombre de cylindres (11) disposés en étoile dans le sens radial, dans un plan perpendiculaire à l'axe du rotor. Un rouleau (121) à appuyer sur une glissière de roulement (2) se trouve à l'extrémité radialement extérieure de chaque piston. Tous les disques du rotor sont accouplés par liaison de forme au niveau de leurs faces d'about par assemblage à rainure et à clavette. Ce système permet de réaliser, en bloc-éléments, des moteurs à pistons radiaux, individuellement en fonction de l'application voulue, à partir d'éléments identiques.
PCT/CH1995/000179 1994-09-01 1995-08-15 Moteur a pistons radiaux pour fonctionnement en mode pneumatique WO1996007017A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU31080/95A AU3108095A (en) 1994-09-01 1995-08-15 Radial piston engine for compressed air operation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2675/94-1 1994-09-01
CH267594 1994-09-01

Publications (1)

Publication Number Publication Date
WO1996007017A1 true WO1996007017A1 (fr) 1996-03-07

Family

ID=4239060

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1995/000179 WO1996007017A1 (fr) 1994-09-01 1995-08-15 Moteur a pistons radiaux pour fonctionnement en mode pneumatique

Country Status (2)

Country Link
AU (1) AU3108095A (fr)
WO (1) WO1996007017A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997032111A1 (fr) * 1996-03-01 1997-09-04 Peter Robert Raffaele Machines fonctionnant a l'aide d'un fluide
CN102320368A (zh) * 2005-10-05 2012-01-18 曼柴油机和涡轮公司,德国曼柴油机和涡轮欧洲股份公司的联营公司 船舶推进系统
CN101745927B (zh) * 2008-12-01 2014-10-15 C.&E.泛音有限公司 一种用于分离粘合的玻璃的粘合边缘的装置和方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE524974A (fr) *
GB685115A (en) * 1949-04-01 1952-12-31 Boulton Aircraft Ltd Improvements in and relating to hydraulic pumps and motors
FR2224647A1 (fr) * 1973-04-09 1974-10-31 Newage Engineers Ltd
FR2331683A1 (fr) * 1975-11-17 1977-06-10 Combustion Res & Tech Moteur rotatif alternatif

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE524974A (fr) *
GB685115A (en) * 1949-04-01 1952-12-31 Boulton Aircraft Ltd Improvements in and relating to hydraulic pumps and motors
FR2224647A1 (fr) * 1973-04-09 1974-10-31 Newage Engineers Ltd
FR2331683A1 (fr) * 1975-11-17 1977-06-10 Combustion Res & Tech Moteur rotatif alternatif

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997032111A1 (fr) * 1996-03-01 1997-09-04 Peter Robert Raffaele Machines fonctionnant a l'aide d'un fluide
CN102320368A (zh) * 2005-10-05 2012-01-18 曼柴油机和涡轮公司,德国曼柴油机和涡轮欧洲股份公司的联营公司 船舶推进系统
CN101745927B (zh) * 2008-12-01 2014-10-15 C.&E.泛音有限公司 一种用于分离粘合的玻璃的粘合边缘的装置和方法

Also Published As

Publication number Publication date
AU3108095A (en) 1996-03-22

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