DE1553059A1 - Hydraulic rotary pump or motor - Google Patents

Description

W / Ha '' Münohen-Pullaeh, September 28, 1965

427 379

GERMANE CORPORATION, a Minnesota State Company, 12oo First National Bank Building, Minneapolis, Minnesota, USA

Hydraulic rotary pump or motor.

The invention relates to a hydraulic rotary pump or motor as is already known (see U.S. Patent 1,682,563). This is a device with an internally toothed ring link and an externally toothed one Star link are arranged one inside the other, the star link executing a hypocycloid movement and around the Axis of the ring member revolves in a circular path.

It is an object of the invention to provide a device of this type to equip with a new and improved valve and drive system.

Further objects, advantages and details of the invention emerge from the description of an exemplary embodiment which now follows referring to the drawing. In this point

Figure 1 is a longitudinal section through an embodiment the device according to the invention,

which can run as a pump or motor, ale Section near the line 1-1 dtr Figure 2 »

FIG. 2 is a side view from the left side of FIG Device similar to Figure 1)

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Figure 3 shows a section along the line III-III of Figure 1 j

FIG. 4 shows a section along the line IV-IY of FIG. 1; and

Figure 5 is a section along the line V-Y of the device according to Figure IV.

The illustrated embodiment of the invention shows a housing having generally cylindrically shaped parts 2, 4 »6, 8 and 1o, These housing parts are axially aligned by means of a number of spaced apart bolts 12 held together.

The illustrated in Figures 1, 3, 4 and 5 housing part 6 is ring-shaped, and in the illustrated embodiment, the housing part 6 is at the same time the ring member of the Contraption. The housing or ring member 6 shows internal teeth 13 and forms the outer wall of a chamber. An outside Toothed star member 14 with teeth 16, the number of which at least is one tooth less than the number of teeth of the ring member 6, is arranged eccentrically in the chamber or in the space, which is encased by the ring member 6 and formed by this. The star member 14 is relative to the ring member 6 in this movable in a circumferential manner, the axis 18 of the star member 14 being movable in an orbit around the axis 20 of the ring member 6 is. During this orbital movement of the star member 14 get the teeth 16 with the ring member gear 13 in sealing engagement, around expansion and contraction cells 22 to which correspond to the number of teeth 16. The housing parts 4 and θ show generally annular plates, which form side walls for the cells 22.

In Figures 3 and 4, the vertical center line 24 shows the Eccentricity of the star member 14 for this particular location of the

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Star link relative to the hanging link 6. The eccentric line 24 iat'as a line defined which runs through the axes 18 and 20 of the star and ring members 14 and 16. During the orbital movement of the star link 14 clockwise, As illustrated in Figure 3, the cells 22 are expanded on the left side of the eccentric line, and the Cells 22 on the right are contracted. When the device is used as a motor, it becomes pressurized fluid passed into the expansion cells and from the contracting ones Cells aspirated. When using the device as a pump, the hydraulic fluid is in the Expansion cells sucked in and pressurized from the contracting ones Cells derived. In the following, the valve arrangement is explained in more detail, the pumping or the motorized Effect relieved.

The star member 14 shows a bore 26 concentric with the axis 18. A roller-like part 28 is rotatable in the bore 26 arranged, and the axial length of the part 28 is less than the axial length of the bore 26. The part 28 is by means of a plate 4 and a pin 3o in its illustrated Location held. The pin is attached to the star 14 by means of a Pi * ess seat in the bores 31, and these lie diametrically across the bore 26.

The roller-like part 28 shows a central liquid-free dividing wall 32. Several channels arranged in the circumference are in the Part 28 arranged and consist of a first series of channels 34 on one side of the partition 32 and a "second row of channels j> 6 on the other side of the partition 52. The second row of channels 36 is opposite the first row of channels 54 offset in the circumference, as shown a comparison of FIGS. 3 and 4 is evident.

BAD ORlGiNAt -0098 3 6/018 7

Series of channels 36 are provided in the star link 14, each of which extends from the bore 26 in the radial direction to a point between two star teeth 16, Each of the bores 38 is designed to extend in the axial direction relative to the 'feil 28 aerart arranged that a connection between the two rows 34 and 36 is made is when there is a relative rotational movement between the star member 14 and the roller-like part 28. If necessary can each of the bores 38 in two axially aligned Channels can be divided into planes which are axially aligned with the rows of channels 34 and 36 in part 28 are.

Housing part 2 shows at one end a cylindrical bore 39 and a cylindrical counterbore 4o in the vicinity of the Bore 39. The housing part 1o shows a cylindrical bore 42, and both the counterbore 4o and the bore 42 are concentric arranged relative to the axis 2o of the ring member 6. The housing part 2 has a radially arranged bore 441 which is connected to the counterbore 4o. The housing part 1o has a radial bore 46, which with the bore 42 is connected. For the sake of simplicity, the bore 44 is hereinafter referred to as the inlet bore and the bore 46 can be referred to as the outlet hole. It should be emphasized, however, that the bore 46 as well as the inlet and the bore can serve as an outlet *

The housing part 2 shows a cylindrically shaped anchor member 48 which is rotatably arranged in the bore 4o. An end of the anchor member 48 has a reduced diameter to form an annular shoulder 49 which is located between the Bore 39 and the counterbore 4o formed RingBOhulter rests in order to prevent the armature 48 from moving outward

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left, work to prevent. The armature 48 shows a bore 5o and a pin 52 which is press-fit into the bores 53 and extends transversely to the bore 5o extends.

The roller-like part 28 also has bores 54 and 56 on opposite sides of the partition 32. Gables 57 are provided extending axially from the partition 32 extends, and a pin 58 is arranged on part 28 and inserted through the g-cables 57 and is diametrically transverse to the Bore 54. A G-joint shaft 6o lies between the armature 48 and the part 28. One end 62 of the shaft 6o is arranged in the anchor bore 5o and shows a double spherical one Shape with the same diameter as the anchor hole 5o. The end 62 of the shaft 6o is to form a recess 64 forked with the same diameter as the pin 52, the by means of the slot 64 of the fork is adjustable * The other The end of the shaft 60 is bifurcated to form a slot 68 for receiving the pin 58, which passes through the base seat 68 is customizable.

The arrangement with the armature 48 and the shaft 60, which can be referred to as a role anchoring device is thereby held in the G-ehäusebohrung 40 in its axial position act between the Q ehäuseschulter 49 and the roller pin is disposed 59th

The angular position of the pin 52 determines the angular position between the roller-like part 28 and the star 14? who in turn defines the rotation of the star 14 relative to the ring member 6. The anchoring 48 is held adjustable in its angular position about its own axis relative to the housing part 2, ίο that the angular position between part 28 and star 14

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can be changed. For this purpose there is an adjustment ring 68 is provided, which is attached to the anchor 48 with a bolt 69 and a Dtibel pin 7o. The -angular position of the anchor 48 and the adjustment ring 68 relative to the housing part 2 is by means of an arcuate slot 72 in the adjustment ring 68 and one Bolt 74 adjustable, which is arranged in the recess 72 in a threaded hole 76 in the housing part 2. The way in which the angular setting of the armature 48 is adjustable, causes the determination of the direction of rotation of the star 14, like that will be described in more detail below.

The bore 42 of the housing 1o shows a stepped rotatable one Wave 8o. The shaft 8o is held axially in the bore 42 by being between the annular plate 8 and a circlip 82 is arranged. The shaft 8o shows an axial bore 84 in a concentric arrangement with the ring member axis 2o. A Pin 86 is fitted into bores 85 and is transverse to bore 84. A cardan shaft 88 lies between the shaft 8o and the star member 14. One end 9o of the shaft 88 is arranged in the bore 84 and shows a double-spherical cap-shaped Shape with the same diameter as the shaft bore 84. The shaft end 9o is for the purpose of forming a recess 92 forked with the same diameter as the pin 86, which can be adapted to the fork by means of the slot 92. That the other end of the shaft 88 also carries a liabel to form a sole seat 96 with the same width as that Diameter of the star pin 3o, the shaft 88 here Also with a slot to adapt to the pin 96 is equipped.

The shaft 8o shows a circumferential groove 97 which is axial with the channel 46 is aligned and has a plurality of radial openings 98, which are connected to the shaft bore 84 and the circumferential groove 97

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is in communication so that a connection between the housing channel 46 and the bore 56 is made.

The star member 14 is relative to the ring member 6 in the above mentioned manner, and the shaft 88 is thus always in a cock-shaped or inclined position relative to the shaft 8o held, which has the same axis 2o as the ring member 6 also has relative to the axis 18 of the star member 14. The star member 14 with six teeth 16 makes one revolution around its own axis 18 with a six-time revolution of the star link paths in the opposite direction around the axis 2o of the ring member 6. In this way, the left shaft end 88 Bowohl performs a path movement as well as a rotary movement together with the star member 14, while the right end of the shaft 18 only rotates together with the Wave 8o executes. The connections between shaft 88 and shaft 8o and between shaft 88 and the star member 14-14 are shapes of the universal joints that allow shaft 88 to move as described above. When the device is used as a pump, the star member 14 is rotated by means of a rotational force exerted on the shaft 18 offset, which is transmitted to the star member 14 via the shaft 88 ". But if the device is used as a motor finds, is the rotation generated by the rotation of the star member 14 about its own axis 18 by the shaft transferred to the shaft 8o for the purpose of driving the same.

Assuming that the device is operating as a motor, fluid under pressure is passed through one of the channels 44 into the housing bore 40 and the bore 54 through channels 34 into the revolving valve 28, which is shown in FIG Eccentric line 24 is illustrated and passes through channels 38 in the star 14 _t as shown in Figures 3 and

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V »V *

is illustrated, on the right side of the eccentric line 24 to certain cells 22, as they are on the right side of the Eccentric line 24 are illustrated.

The liquid is directed under pressure into the cells on the right side of the eccentric line 24 and causes a Clockwise rotation of the star 14, with the cells 22 on the left side of the eccentric line 24 are brought to collapse. The hydraulic fluid comes from the collapsing Cells 22 through channels 38 in star 14> as shown on the right-hand side of eccentric line 24 in the figures 3 and 4, via certain channels 36 into the roller-like valve 28, as is illustrated in FIG. 4 on the left-hand side of the eccentric line 24 the bore 56 and the shaft bore 84 and ultimately through the shaft channels 98 and the circumferential groove 97 to the outlet channel 46.

The above description applies only to a momentary condition in which the eccentric line 24 about the axis 2o des Ring member 6 rotates. But as long as hydraulic fluid is passed under pressure through the channel 44, it will always to the cells 22aif of the right side of the eccentric line 24 and the liquid will always be sucked out on the other side of this line.

In operation, the star 14 follows in its path relative to the ring member 6 and the part 28 of this path movement as a result of the Characteristics of the universal joint of shaft 6o. This gimbal properties of the shaft 8o also prevent rotation of the part 28 relative to the ring member 6 when the anchor member 48 is in a certain angular position relative to the housing part 2 and ring member 6 is held. The star 14 runs relative to the

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ORlGiNAL INSPECTED

Ring member 6 in the opposite direction, from where it gets on its path relative to the ring member 6 and beyond relative to part 28 revolves. This rotation of the star 14 brings each channel 33 in sequence with the channels 34 and 36 of part 28 to cover.

The illustrated embodiment of the invention shows six channels 38 in star 14 and seven, each of which is channel 34 and 36 is arranged in part 28. If pressure fluid is fed from the channel 44 of the bore 54, as from FIG. 3 'shows only the channels 34 and the star channels 38 on the right-hand side of the eccentric line 24 to one another Aligned, and in this way the liquid under pressure can only reach the cells 22 on the right side of the Eccentric line 24 are supplied. On the left side of the eccentric line 24, see Figure 3 »there are no channels 34, which are made to coincide with the star channels 38. With reference to that of cells 22 on the left of the In the same case, only the channels 36 are on the left-hand side Side of the eccentric line 24 with the channels 38 in connection! and in this way the fluid to bore 56 will only come from cells 22 on the left hand side of eccentric line 24 sucked off. On the right-hand side of the eccentric line 24 »see FIG. 4, there are no channels 36 that correspond to the star channels 38 in contact.

The properties described with reference to the deodorant

with
bringing channels / the supplied liquid to the outflow from the cells 2o exist in any position of the star 14 relative to the ring member 6, as long as the anchor 48 is held in its position illustrated in the drawing. The orbital movement of the star 14 can be controlled by loosening the bolt 74 and rotating the armature 46 by a predetermined angle.

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- 1ο -

number in a certain direction as well as through a again Tightening of the bolt 74 can be reversed. When the armature 48 is rotated with reference to Figure 3, the three channels 34 of the role with the star channels 38 on the left side of the eccentric line 24 are brought to congruence, the Hydraulic fluid is passed to the left side, and the star 14 is then set in rotation in a clockwise direction. from Figure 4 it can be seen that an adjustment of the armature 48 automatically the three Hollenkanal 36 to coincide with the three channels 38 on the right side of the eccentric line 24 brings to the cells 22 on the right side of the eccentric line 24 suck out.

The number of rotations of the armature 48 or the rotation for the purpose Reversal of the orbit of star 14 depends on the ratio between the number of teeth on the star and the number of teeth on the ring link, With a ratio of 6: 7 »as illustrated in the exemplary embodiment, the armature 48 would be 1/14 Rotation must be rotated in one direction, in others Examples would be a turn of 1/12 of a full turn at a ratio of 5: 6 and a 1/16 turn for one Ratio of 7: 8 must be carried out.

With reference to the mode of operation of the subject matter of the invention in general, it can be stated that in the arrangement of a channel 38 in the star 14 corresponds to less than the number of channels 34 or the discharge channels 36 in the part 28, a modification is caused, whereby the channels 34 only with the star channels 38 on one side of the eccentric line 24 connect, and the Ausastoßkanäle 36 only with the Star channels 38 are brewed on the other side of the eccentric line to cover. In the illustrated embodiment the invention touches the star seohamal on the circumference

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the ring member 6 "with each revolution relative to the ring member During the orbit of the star 14 around the part 28, a sixths of a clockwise rotation of the star 14 the · ■ Apply liquid from the channels 34 to all six star channels 38 one after the other, and the eccentricity 24 will make one full turn in the G-counterclockwise direction. Likewise, during a sixth rotation, the fluid from all of the six star channels 38 is removed one after the other in a counterclockwise direction through the channels 36.

The shaft 8o is equipped to the device as. To let the pump or motor run, but they can be completely omitted if the invention is for a meter or the like should be used which does not require the equivalent of wave 8o. In the illustrated embodiment of the invention, the cardan shaft 88, which connects the shaft with the star -14, is effective, the shaft 8o with the to put the same speed in circulation, as the star 14 rotates relative to the ring member 6. As an alternative The shaft 88 could be omitted, and an eccentric connection between the shaft 8o and the star bore 26 could be provided by which the shaft 8o is set in rotation at the same speed as that Orbital speed of the star 14 relative to the ring link en1q? richt. '

From the foregoing it is clear that the inventive Device used as a pump, motor or measuring device can be. It can be set up as a pump by connecting one of the ducts 44 or 46 to a pressure fluid source is connected, and in ^ by the shaft 8o is rotated in the same direction. The usage

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as · motor is possible by using one of the channels 44 or is connected to a pressure fluid source, and by the shaft 8o with a mechanically driven Device is connected. When used as a pump, the Wave 8o a relatively fast rotation of the star member 14 and as a result of this a large delivery rate have as a consequence. When used as a motor, the shaft makes one revolution for six revolutions of the star its orbit, if the star 14 has six teeth, and as a result of this, the shaft 8o produces a relatively high torque at relatively low speed.

While one embodiment of the invention has been described, it should be emphasized that the invention is versatile and many changes can be made within the spirit of the invention.

All of the details described and illustrated are relevant to the invention.

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Claims (1)

Patent attorney Dipl.-Ing. Mönchen-Pullach PATENT CLAIMS Fluid pressure actuated device with a housing, inlets and outlets, an internally toothed ring member thatf the outer wall forms a chamber and a cooperating externally toothed star link with a low one tough number than the ring member., the ring member being eccentric is arranged in the chamber and capable of orbital movement about the axis of the ring member while the Teeth of these limbs come into sealing contact with one another, to "expanding cells" on one side of the eccentric line and contracting cells on the other side of the eccentric line during relative movement between them to form two links, the star link being equipped with a center hole and in opposite directions about its axis Direction is rotatable and here with a lower Moved speed than corresponds to the path movement when flowing between the parts, with a roller-like part rotatably arranged in the star link bore and anchoring means are provided, which allow the roller-type part, to follow the foreshadowing movement of the star link, but the a rotational movement of the pin-like part relative to the ring member prevent in operation, being a number of circumferentially arranged Channels are arranged in the roller-like part, of which a first group with the inlet device and a second Group of channels offset from the first »group is arranged, while a liquid-tight partition in the roll-like Part for separating the first group of channels from the second group of channels is arranged, wherein a group of channels is arranged in star link that sioh from the spaces between extends the teeth to the bores, this group of star channels on a relative movement between the actuator 009836/0197 -Jt- and the roller members towards each other with each of the channels of the roller-like part are connectable for the purpose of establishing a connection with the inlet device, and wherein expanding cells on one side of the eccentric line and between the outlet device and the tightly contracting ones Cells are formed on the other side of the eccentric line 2e device according to claim 1 with a cardan shaft device in the housing, which works with the Sternglieü for the purpose of rotary movement in. depending on the movement of the star link relative to the ring link is connected * 3 · Device according to claim 2 with an articulated connection between the star link and the shaft device, the articulated connection at one end to the star link for the purpose of common Orbital movement and rotary movement is connected and the other end with the shaft device for common purposes Rotational movement is connected. 4 · Device according to claim 3 * wherein the articulated connection with Pins in the star link and the shaft device is equipped with pins which are arranged at right angles to one another are· 5 »Device according to claim 1, wherein the anchoring of the roller-like Partly equipped with an articulated connection between the part and the housing 6 · Device according to claim 5t, wherein the anchoring device is equipped with an angle adjusting device in the housing to move the star member relative to the ring member in the Adjust the angle so that a rotation of the star link took place in one direction relative to the ring member 009836/0197 Blank page