DE6601424U - Hydraulic adjusting device - Google Patents

Description

ätydraulic adjusting device

The invention relates to sins hydraulic adjusting device for a remotely controllable work motor. Such an adjusting device is particularly suitable for hydrostatic vehicle steering devices, where there is no mechanical drive connection between the steering wheel and the steerable wheels of the vehicle consists.

From the USA patent Re ₀ 25 126 a hydrostatic steering device is known which has a valve arrangement which cooperates with a metering or RieBmotor in such a way that metered amounts of pressure medium are supplied to a working motor connected to the steerable vehicle wheels. The metered amount of pressure medium delivered to the working motor corresponds to the amount of rotation of the steering wheel by the driver.

In practice it has been found that it may be appropriate or necessary to not only use the but also those output by the work engine To dose pressure medium quantities. The invention has the task

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based on creating a suitable hydraulic adjusting device.

Based on a hydraulic adjusting device with one = « Control device, which is provided with an inlet port, an outlet port and two further ports housing, one alternately enlarging and contracting Kaiwsisrn forming device and a cooperating valve arrangement this object is achieved according to the invention solved that the valve arrangement is designed such that it has the inlet port and one of the two other nozzles one after the other with individual ones of the aich enlarging chambers and at the same time the outlet nozzle and the other of the two further nozzles one after the other with some of the contracting ones Chambers.

A valve control device is a further embodiment of the invention provided, by means of which either one or the other of the two further nozzles to the enlarging Chambers and, accordingly, the other or one of the two other nozzles to the contracting chambers is connectable- This makes it possible to use a work engine can be operated either in the inward or in the other direction,

Further features, advantages and possible uses of the Invention emerge from the subclaims and from following description of exemplary embodiments in Vsrbindun>

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Figure 1 is a schematic representation of a hydro

static driving device,

Figure 2 shows a longitudinal section of a metering device

along the line 2-2 of FIG. 6 corresponding to a first embodiment of FIG Invention,

Figure 3 is a view of the commutator valve element

tes of the metering device according to Figure 2 in the same position tuie in Figure 2,

Figure A shows a view of the control valve element of

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chen position aiie in Figure 2, |

Figures 5 to 11 cross sections along the lines in Figure 2,

whose numbers correspond to the numbers of the figures speak, I.

FIG. 12 a longitudinal section of a metering device

along line 12-12 of Figure 18, accordingly a second embodiment the invention,

FIG. 13 is a view of the commutator valve element

the dosing device according to Figure 12,

Figures 14 to 22 cross sections along the lines in Figure 12,

whose numbers correspond to the numbers of the figures,

FIG. 23 a longitudinal section of a metering device

along the line 23-23 of FIG. 29 corresponding to a third embodiment of FIG Invention,

Figure 24 is a side view of the distributor U-valve element

mentes the dosing device according to Figure 23 in the same position as in Figure 23,

Figures 25 to 33 cross sections along the lines in Figure 23,

whose numbers correspond to the numbers of the figures,

FIG. 34 is a longitudinal section of a

along the line 34-34 of FIG. 38 corresponding to a fourth embodiment of FIG Invention,

Figure 35 is a side view of the divider valve

element of the dosing device according to the figure 34,

Figure 35 is a side view of the control valve element

tes of the dosing device according to Figure 34 and

Figures 37 to 45 are cross-sections along the lines in Figure 34,

whose numbers corresponded to the numbers of the figures.

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In the hydraulic remote control shown schematically in Figure 1, a metering device 1 is provided which comprises a metering motor and a valve which controls the inflow and outflow of fluid to and from the metering motor. The valve ■ ird operated by means of a hand-operated control element 2, which in the case of a vehicle steering device can be a steering wheel. There are also a motor-driven pressure medium pump or a compressor 3, a pressure medium container 4 and a remote-controlled work motor 5 available. the Dosing device 1 has two inlet and outlet ports 6, 7 and two further ports 8, 9, which are dependent on

the direction of rotation of the control element 2 alternately as ■ '8

Inlet or outlet connections act. The pressure medium pump 3

leads pressurized hydraulic fluid to the inlet nozzle 6 through a line 10; from the outlet port j exiting pressure medium is via a line Ii in the

^ O fluid reservoir returned.

ji 'Between the lines 10 and 11 is a check valve

-f 12 arranged so that the metering device 1 at a

«Failure of the drive of the Druckm-ittalpumpa 3 on known

! U / can work as a hand-operated pump, whereby the

• Pressure medium pump B 3 bypassed and pressure medium immediately off

; the pressure medium container 4 is sucked in. If desired,

the check valve 12 can be built into the housing of the dosing device 1.

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The remotely controlled work motor 5 functions as a work cylinder illustrates, within which a piston rod

j ge 13 is guided back and forth with plunger.

If the control is part of a vehicle steering device

is, the piston rod 13 by means of a conventional, Link linkage, not shown, with the steerable wheels

j of the vehicle. At opposite ends

of the working motor 5 provided nozzles 14, 15 are over Lines 16, 17 connected to the nozzle 9, 8 so that

j pressure medium under the influence of the metering device 1

¹ and can be removed to determine the direction of movement of the

? rod 13 to control. The work engine can easily

ä can also be designed in a different way. For example can

• be provided in a rotary motor that works in both directions

■ j gen can be rotated and grounded for any length of time. Accordingly is

^: j the invention is not limited to steering devices, but generally applicable, tao it on tiia remote control '! of a hydraulic motor arrives.

l Figures 2 to 11 show a metering device 1A ge—

measured a first embodiment of the invention. That Exactly

The dosing device 1A consists of one with one

Annular flange provided end plate 20, a tubular

, Housing part 21, an annular plate 22, a

I gerotor housing forming, internally toothed ring gear 23 and

ι an end plate 24 _O Hie housing parts 20 and 21 are means

424

several screws 25 distributed on the circumference are axially aligned held together. The end plate 24 laterally closes off the gerotor housing. The housing parts 21 to 23 are assembled axially aligned by means of screws 26 distributed around the circumference.

The housing parts 20 and 21 together form a bore 3D, in which a tubular, provided with a bore 32, cylindrical commutator valve stem 31 rotatably mounted

Si is. In the bore 32 of the commutator valve element 31 a cylindrical control valve element 33 with a bore 34 is rotatably mounted. The holes 34, 30 and 32 are located coaxially with respect to the axis 29 of the toothed ring 23.

An externally toothed gear 27, which is at least one tooth less than dei. Toothed ring 23 is in that of the toothed ring 23 formed space arranged eccentrically. It can perform hypocycloid movements in the direction of its axis describes an orbit around the axis 29 of the toothed ring 23. During the orbital movement of the gear 27 with reference to FIG the ring gear 23 mesh the teeth 36 of the gear 27 with the teeth 35 of the ring gear 23, with expanding and constricting, sealed chambers are formed, designated 37-43 in FIG. the Plate 22 u / eist a hole which is to the axis 29 of the Toothed ring 23 is concentric and a sufficiently small

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Has diameter to that of the end plate 24 opposite Side of the chambers 37 to 43 in every position of the gear 27 to complete.

The vertical ID center line drawn in FIGS. 5 to 7 represents the eccentric line 44 of the gear 27 for the position of the gear 27 illustrated there with reference on the toothed ring 23. As an eccentric line is present understood the line that in each position of the gear 27, the axes 28 and 29 of the gear and toothed ring perpendicular cuts. If the gear wheel 27 rotates clockwise, for example, the chambers 37 to 39 on the left widen Side of the eccentric line, while the chambers 40 to 42 pull together on the right side of the eccentric line. Chamber 43 is fully open at the moment. When operating the illustrated Device flows pressure medium into the expanding chambers on one ^ -ite of the eccentric line and is pushed out of the contracting chambers on the other side of the eccentric line.

The control valve element 33 has an annular journal bearing 45 which is rotatable in a central bore 46 of the end plate 20 seated. A liquid-tight partition wall 47 is arranged next to the journal bearing 45 »a hole 48 on the left the partition wall 47 has a spline. A control unit 49 with an end part 50 which carries a spline which cooperates with the spline dsr bore 48,

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serves to rotate the control valve element 43 «when the
Dosing device is provided in a vehicle steering device, a steering wheel, not shown, is connected to the control shaft 49 »

The gear wheel 27 is mechanically connected to the commutator valve element 31 via a cardan shaft 51. The gear wheel 27 usually has a bore concentric to the series of teeth 36
on, on the circumferential surface of which a splined toothing 52 is formed »On the end of the cardan shaft 51 that faces the gear 27
Spline 52 of the gear 27 corresponds. At the opposite end of the propeller shaft 51 there is a head
53 * with a frustoconical part that is the same
Has the same diameter as the bore 34 of the control valve element 33 and has a slot 54. A pin 55 is firmly connected to the commutator valve element 31 and is pressed into holes on opposite sides of the commutator valve element 31 and extends diametrically through the bore 32
extends through. The diameter of the pin 55 is equal to the diameter of the slot 54 in which the pin engages.

Circumferential slots 57 and 58 (FIGS. 4 and 8) of the control valve element 33, which are diametrically opposite one another, receive the pin 55 and thus enable a limited relative rotational movement between the valve elements 31 and 33 _O UJenn das

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Control valve element 33 from the vsrenschsulichten in FIGS. 2 to 11 If the neutral position is rotated in one of the two directions, the pin 55 lies against the opposite one Ends of UtnfangsschlitzB 57 and 58, at uiaiterer Rotation of the control valve element 33 causes the commutator valve element 31 taken »

By means of leaf springs 59 (FIG. 11 ) , which extend radially through each of the diametrically opposite openings 60 of the commutator valve element 31 and to the diametrically opposite openings 51 of the control valve element 33, the control valve element 33 is held in its neutral position with respect to the control valve element 31 , in which the circumferential slots 57 and 58 lie centrally with respect to the pin 55.

The cardan shaft 51 represents a kind of universal joint coupling, which means that the commutator valve element 31 is synchronous with the rotational movement of the gear 27 is rotated. A gear wheel 27, which has six teeth, leads during one revolution around its own axis 28, six revolutions in each case the opposite direction about the axis 29 of the toothed ring 23 off. The right '- the end of the articulated shaft 51 thus leads together with the gear wheel 27, perform both an orbital and a rotary movement, while the left end of the articulated shaft 51 ZueSiiiifiSn ifilt uefii KOifiwiitstor —wSviti ΙσΙσίΓιδΠν 31 ΓϊΙίΓ slfiS threshing movement carried out

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If it is assumed that no pressure medium is supplied to the metering device 1A, the metering device works in such a way that a rotation of the control source 49 in one direction or the other causes a rotation of the control valve element 33 relative to the commutator valve element 31 against the slight resistance of the springs 59 causes up the opposite
Ends of the circumferential slots 57, 58 bear against the pin 55.
With continued rotation of the control elements 49, the valve elements 31, 33 are adjusted together and the joint element 51 is entrained via the pin 55. The rotary movement of the control element 51 allows the gear wheel 27 relative to the axis 29 of the toothed ring 23 in one Revolve in the opposite direction to the direction of rotation of the storage valve 49, when the control valve 49 is stopped, the control valve element 33 rotates under the influence of the springs 59 by a small amount in the opposite direction until it senses its neutral position with respect to the commutator valve element 31

Used in devices operated by pressure medium, such as pumps and Motors that use a gerotor gearbox must, as is well known, the ι pressure medium supply and discharge with the rotational speed of the revolving gear, because the jßde between the gears formed chambers during each cycle of the circulating Gear is expanded once and contracted once. From the USA patent specification 2 821 171 (Re 25 291) is a hydraulic gerotor gearbox with a commutator valve element 31 corresponding commutator valve element

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known, the rotating synchronously with the Drehbetu & gung dee Gear rotated Oa the speed of rotation is only a fraction of the speed of rotation, such a thing can be Commutator valve element can be addressed as a slow runner. The valve channels are arranged in such a way that the pressure medium passes the gerotor transmission in a time sequence is supplied and discharged from the transmission, which takes into account the fact that during each revolution a large number of Chambers are formed while the speed of the slowly running Commutator valve element is only a fraction of the rotational speed of the gerotor gear. The term commutator valve uiurda chosen, uieil those through such a valve caused pressure cuts to a certain extent correspond to an electrical commutation.

The housing part 21 mostly inlet and outlet connections 62 and 63, respectively that extend to the hole 30. Two other nozzles 64, 65 of the housing part 21 act alternately as an inlet and as Outlet port. They extend to the bore 30. The connection pieces 62 to 65 correspond to the connection pieces 6 to 9 of the metering device 1 of Figure 1.

The commutator valve element 31, the control valve element 33 and the housing parts 21, 22 are provided with passages through which pressure medium from the inlet port 62 and one of the Connection 64 or 65 to the enlarging chambers of the gerotor gear passed and through the pressure medium from the

contracting chambers of the gerotor gear to the Outlet port 63 and the other port 65 bzui. 64 led can be.

The housing parts 21 and 22 are provided with a number of axially extending channels 66 to 72 distributed around the circumference corresponding to the number of teeth 35 of the toothed ring 23. The channels 66 to 72 extend from points between the teeth 35 in the interior of the toothed ring 23 (Figure 5) through the housing parts 21 and 22 and open radially into the bore 30 of the housing part 21, vuo connections to the stationary channels 66 to 72 and passages of the commutator valve element 31 are produced (FIG. 6). These passages consist of a first group of six passages A to F distributed around the circumference and a second group of also ash? Circumferentially distributed passages Hfl to R, which are spaced alternately between the passages A to F. As soon as the commutator valve element 31 rotates, the passages A to F and Hfl to R are successively brought to coincide with corresponding channels 66 to 72 in the housing part 21.

For the sake of simplicity, that illustrated in FIG. 6 is illustrated Level in which the connection between the channels 66 to of the housing and the passages A to F and IYl to R des Commutator valve element takes place, referred to as the commutation level. In the commutation level, the external

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circumference of the commutator valve element 31 is divided into 24 sections, and 12 alternately spaced sections are completely taken up by the passages A to F and IT1 to R, the channels 66 to 72 have in the commutation plane on the outer circumference of the commutator valve element 31 the same circumferential dimensions ü / is the passages A to F and M to R ₀

When the commutator valve element 31 is rotated, it flows Depending on the direction of rotation, pressure medium through some of the passages A to F into the enlarging chambers of the gerotor gear and from the shrinking chambers of the gerotor gearbox into some of the passages (Ϊ1 to R, or vice versa. With the position of the gear wheel 27 illustrated in FIG. 5 and the position of the commutator valve element shown in FIG 31 are dependent on the direction of rotation of the commutator valve element 31 zujei different instantaneous flow conditions possible »lüsnrs the direction of the commutator valve element 31 runs counterclockwise in FIG. 6, pressure medium flows from the passages P, Q and R through channels 70, 71 and 72 into chambers 37, 38 and 39 which expand »The expansion of the chambers 37 to 39 ensures that the gear 27 rotates clockwise and that the chambers AO to 42 contract, from which then pressure medium via the channels 66 to 68 into the Passages A to C flows., UJenn the direction of rotation of the commutator = U-valve element 3 conversely aäre * care the flow

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direction opposite to that described ,, in dar in figure 5 illustrated position of the gear 27 is the chamber 43 fully expanded, so that momentarily pressure medium uieder flows to the chamber 43 nor flows out of it. In the next moment, however, pressure medium arrives from the chamber 43 into the Passage 0, if the commutator valve element 31 is in Rotates clockwise, or from the passage D into the chamber 43, u / enn the commutator valve element 31 is opposite turned clockwise

The above description of the flow processes only applies to a momentary state, but as long as the commutator valve element 31 rotates in one direction, pressure medium is always introduced into and out of the expanding chambers from the passages of the commutator valve element on one side of the eccentric line the decreasing chambers through the passages on the other side of the eccentric line. In addition, the flow in the passages A to F is always the same, and depending on the direction of rotation of the commutator * valve element 31 either towards the gerotor gear or from this ujeg _o The same applies to the passages IKl to R, with the exception that the direction of flow in the passages ΙΪ1 to R is always opposite to the direction of flow in the passages A to F "

The commutator valve element 31 has an axial direction

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with the inlet connector 62 aligned ünsfangsnut 73 on. openings 74 extend radially inward from the circumferential groove 73 through the commutator valve element 31; she are aligned with an equal number of radial openings 75 of the control valve element 33, menn this in the illustrated neutral position. The openings 75 are open to the bore 34 of the control valve element. Pressure medium entering the bore 34 is passed through later described passages leading to the outlet connection 63 due to the fact that the openings 74 and 75 are aligned with one another, The control valve element is in its neutral position Location is located, pressure medium from the inlet port is in this position 62 diverted directly to the outlet connection 63. When the control valve element 33 is rotated in one of the two directions by a predetermined, by the size of the circumferential slots 57 and 58, the openings 74 and 75 come out of alignment. That then from the inlet port 62 in the Circumferential groove 73 flowing pressure medium ensures the geuiünschte Control function, for example steering the wheels.

The control valve element 33 has a circumferential groove 76 which extends radially inward with the circumferential groove 73 and from there Holes 77, which connect the circumferential grooves 73 and 76 to one another, is aligned in the axial direction. The control valve element 33 is also with three axially extending and offset from one another in the unifangsrichtung Longitudinal slots 78 provided, which are in relation to the circumferential groove 76

424

Jl - 17 -

bond and move to the right at least up to the commutation level extend to open the channels 66 to 72 in the bore 30. The control valve element 33 mostly three in Outlet openings 79 running in the radial direction (FIG. 6), which are connected to the bore 34 of the StBuervantilelBmentBs 33 stand and are arranged on the circumference at a distance from the longitudinal slots 78. A cross-slot 80 (Figures 4 and 6) intersects each of the outlet openings 79 and terminates in one Distance corresponding approximately to the width of a longitudinal slot 78, in front of each of the longitudinal braids 78.

In the two groups of the passages A to F and IYl to R acts the passages B, D and F of one group and the passages IY1, 0 and Q of the other group are holes, which extends radially from the outside to the inside through the commutator valve element 31 extend through it. When the control valve element 33 is in the neutral position (Figure 6), is located in each case a longitudinal slot 78 between the port pairs IYl-B, 0-D and Q-F. When the control valve element 33 is counterclockwise rotated until it is with respect to the commutator valve element 31 is stopped by the pin 55, the longitudinal slots 78 are aligned with the passages F, B and D and come the outlet openings 79 with the passages IYl, Q and 0 in connection. With this setting of the control valve element

tes 33 flows when the commutator valve element 31 is in ί

the position illustrated in Figure 6, pressure means from the inlet port 62 through the circumferential groove 73, the holes 77

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in the commutator valve element, the circumferential groove 76 of the control valve element, the LMngsschlitzB 78, then passage B and the channel 67 into the expanding chamber 41, mourning Pressure medium from the contracting chamber 38 over the channel 71, the passage Q and one of the outlet openings 79 enters the interior of the Steueruentilelemsntes 33 and exits via the outlet connection 63 ,,

The outlet connection 63 is connected to the bore 34 of the control valve tilelementes 33 via openings 81 distributed around its circumference (Figure 11), an annular groove 82 on the inner wall of the bore 32 of the commutator valve element 31, on the circumference of the commutator valve element 31 distributed openings 83 and an annular groove on the inner wall of the housing part 21 in constant connection « The openings 81, 83 and the annular grooves 82, 84 are axially aligned with the outlet connection 63 »The head 53 'of the cardan shaft 51 is designed in such a way that it does not shut off the pressure medium flow from the right end of the bore 34 to the outlet connection 63

The commutator valve element 31 usually has two circumferential grooves 85 and 86, the mi *; the connection piece 64 and 65 are axially aligned and the channels are arranged 66 to 72 in the bore 3d on both sides of the junctions lying in Kommutierungsebene dec. The circular web, which separates the two circumferential grooves 85, usually has six recesses, each of which is connected to a circumferential groove 85, 86 and the passages A, N, C, P,

E and R of the two previously mentioned groups of _{passages form e} Passages A, C and E are in constant communication with the connection piece 64 via the circumferential groove 85, while the passages N, P and R are constantly connected to the connection piece 65 via the circumferential groove 86, ,

When Bin remote working motor, ζ, Θ. the work engine 5 in FIG. 1, to which nozzles 64 and 65 are connected, the metering device 1A depends on the direction in which the control valve element 33 from the neutral Position is unscrewed, pressure medium through the passages A, C and E and the connecting piece 64 to one side of the working motor get while pressure medium from the other side is discharged via the connection 65 and the passages N, P and R, or vice versa.

In operation, the control valve 33 is rotated until the Pin 55 strikes at the ends of the circumferential slots 57, 58 ,, Then the valve elements 31 and 33 rotate together, ujobBi the commutation between the passages A to F and JKl to R of the commutator valve element 31 and the channels 66 to 72 takes place, UJenn the control valve element 33 to Example in Figure 6 is rotated clockwise, his longitudinal slots 78 connected to the inlet connection 62 with the passages B, D and F of the commutator valve element brought to congruence, while the passages IYl, D and Q over the outlet openings 79 in the control valve element 33 with the outlet

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let stutzen 63 come in contact «In the moment in which the commutator valve element 31 is in the position illustrated in FIG. 6 and the gear wheel 27 assumes the position shown in FIG. 5, pressure medium flows from the inlet connection 62 via passage B and channel 67 into chamber 41 which expands. The expanding chambers 40 and 42, which at this moment are in communication with the nozzle 64 via the channels 66 and 68, the passages A and C and the circumferential groove 85, suck pressure medium through the nozzle 64 under the suction of the expanding chambers 40 and 42. On the left side of the eccentric line 44, the chamber 38 contracts; the pressure medium contained therein is through the channel 71, the passage Q and the outlet opening 79 of the Control valve element 33 driven to outlet port 63. At this moment, the chamber 37 also narrows. That in it pressure medium located laird under pressure via channel 70, the passage P and the circumferential groove 86 driven to the nozzle 65, Thus, at this moment, a measured amount of pressure medium is conveyed from the gerotor gear to the connector 65, and during one The measured amount of pressure medium is taken up by the gerotor gear via the nozzle 64 uiirdo Work engine, e.g. B. the working motor 5 according to Figure 1, which is connected to the connecting pieces 64 and 65, so that both the amount of pressure medium supplied to it and the amount of pressure medium released by it metered by the expanding and contracting chambers of the gerotor gear, when the control valve element is rotated in the opposite direction, that is to say in FIG

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- 21 -

counterclockwise, result in similar flow conditions with the exception that the pressure medium flow to and of the connection pieces 64, 65 is reversed.

As long as the control valve element 33 is rotated via the control shaft 49 in one direction or the other, so that the Longitudinal slots 78 with one of the passage groups B, D, F or Hl, 0, Q remain aligned, the commutator valve rotates »Element 31 and are metered amounts of pressure medium in the with promoted the connecting piece 64 and 65 connected working motor and derived from it. UIf the control shaft 49 is stopped, Turn the commutator valve element 31 further by a few degrees until it returns to its neutral position with respect to the Control valve element 33 occupies.

In the case of the dosing device IA, the arrangement is made in this way.

that in operation each of the nozzles 62 to 65 with three passage =

sen of the commutator valve element is in connection. UJenn

the control valve element 33 is rotated to the right

the passages in the order A, IKl, B, N, C, 0, D, P, E,

Q, F and R with nozzles 64, 63, 62, 65, 64, 63, 62, 65, 64,

Ρ 63, 62 and 65 connected. For gerotor gearboxes with one tooth

However, a ratio of 7: 6 can also be used in other arrangements

{be provided. For example, during operation of the

I! I device either four or eight instead of six that

Passages A to R with the inlet and outlet ports 62, 63

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are connected = UIf four of the twelve passages A to R are on

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the inlet and outlet ports 62, 63 can be connected, jjerden eight passages connected to the nozzles 64 and 65. if eight of the twelve passages A to R can be connected to the inlet and outlet connections 62, 63, there are accordingly only four Passages for the connection to the nozzles 64, 65 are available »

Figures 12 to 22 show a metering device 1B according to a second embodiment of the invention. The housing of the dosing device 1B consists of a tubular housing part ¹ 91, an annular plate 92, an internally toothed ring 93 forming a gerotor housing and an end plate 94 several circumferentially distributed screws 95 axially aligned held together. An externally toothed gear 95, which has at least one tooth less than the toothed ring 93, meshes with the teeth of the toothed ring 93 «The toothed ring 93, the gear 96 and the plates 92, 94 can be with corresponding Parts of the first embodiment are identical and are therefore not described again in detail. In the bore 97 of the housing part 91, a cylindrical commutator valve element 98 is axially displaceable and has a concentric bore 99 = at its right end

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The commutator valve element 98 has opposite Ends two cylindrical parts 101 and 102 of smaller diameter

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sera and a tapered UJelien section at its left end 103 to »The housing part 91 is provided with bores 104 and 105 at both ends. The length of the middle part of the commutator valve element p 98 between the parts 101 and

102 corresponds to the mutual spacing of the bores 104 and 105 o When the commutator valve element 98 assumes the neutral position illustrated in Figure 12, its middle part between the parts 101 and 102 is centered between the bores 104 and 105 _o The bores 104 and 105 have a sufficient depth to permit axial movement of the commutator valve element 98 in either direction with respect to the neutral position.

The housing part 91 carries an annular flange 106 at its left end. A steering wheel 107 with a hub 108 which has a | Bore 109 and a counter bore 110 is on the device housing part 91 fixed in such a way that it is fixed in the axial direction |; held, but rotatable with respect to the housing part 91. | For this purpose, the annular flange 106 is rotatably seated in the '- counterbore 110 and a iet attached to the hub 108 by screws 112, retaining ring 111 is provided which rests slidably on the ring flange ¹ J 106th ι

A sleeve 114 with an annular flange 115 is between the hub 108 and the UJellenabschnitt 103 and firmly connected to the hub by means of I screws 116 «The UJellenabschnitt

103 has a radially directed bore 117 into which a

4 2

Pin 118 is pressed in. The sleeve 114 is provided on opposite sides with inclined guide slots 119 and 120, the width of which is approximately the diameter of the pin 118 is equivalent to. When the steering wheel 107 in one vein the other Direction relative to the housing part 91 is rotated, the commutator valve element 98 is through the interaction between the guide slots 119, 120 and the pin 118 bent out of the neutral position in the axial direction.

Ring disks 121 and 122 are arranged at opposite ends of the commutator valve element 98 in the ring-shaped spaces which are formed between the counter bores 104, 105 and the cylindrical parts 101, 102. In these rooms and coil springs 123, 124 housed, of which one between the annular disc 121 and the hub 108 of the steering wheel 107 and the other between the annular disc 122 and the plate 92 is seated. Hold coil springs 123 and 124 the commutator valve element 98 resiliently fixed in its neutral position and lead it back into this position when the Steering wheel 107 is released again after an axial movement of the commutator valve element causing rotation.

The gear wheel 96 is mechanically connected to the commutator valve element 98 via a cardan shaft 125. The gear 96 has a bore concentric to its external teeth, on the circumferential surface of which a spline toothing 126 is formed is. At the end of the propeller shaft facing the gear 96

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Jl sits an enlarged, frustoconical head 127, the

P Diameter of the diameter of the bore of the gear 96

jj and which has a spline, the teeth of which

number equal to that of the splines 126 of the gear

I '96 is «the bore 99 of the commutator valve element 98

also carries a spline 128. The other end of the propeller shaft 125 has a head 129 with a frustoconical Provided part that has the same diameter as the bore 99 and has a spline whose teeth · = number of those of the spline 128 corresponds. The width of the head 127 is dimensioned so that an axial movement of the

Propeller shaft 125 is prevented. The spline 128 has

sufficient length to allow the axial movement of the! '-> mmutator valve element 98 to enable.

The universal joint shaft 125 represents a type of universal joint coupling,

»J which causes the commutator valve element 98 to synchronize with

<i of the rotational movement of the gear 96 is rotated. A gear

96 with six teeth leads around his during one revolution own axis 130 each six revolving movements in opposite directions Direction about the axis 131 of the ring gear 93 from. The right end of the cardan shaft 125 thus leads together with the gear 96 from both an orbital and a rotary movement, while the left end of the propeller shaft together with the Commutator valve element 98 only performs a rotary movement.

It is assumed that the dosing device 1B does not have a pressure center]

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- = € 2

is supplied, the dosing device works in the manner that a rotation of the steering wheel 107 in one or the other in the other direction caused a rotation of the hub 1G8 with respect to the housing part * 91. The guide slots 119 and 1 2u cooperate with the pin 118 in such a way that the commutator uentilelement 98 in one direction or the other against the low resistance of one of the two coil springs 123, 124 shifted until the opposite ends of the feet approximately slots 119, 120 abut the pin 118 and a white tere relative movement between the steering wheel 107 and the K-om.mutator valve element 98 prevent »If you turn the steering wheel 107 further, this and the commutator valve element 98 are adjusted together, the cardan shaft 125 being taken along via the spline 128. The rotation of the PTO shaft 125 leaves the gear 96 in a direction of rotation of the articulated shaft 125 revolve around the axis 131 in the opposite direction, when the rotation of the steering wheel 107 is ended one of the coil springs 123 or 124 guides the commutator Uentilelsment 98 in the axial direction back to its neutral position ,, The steering wheel is driven by the interaction between the Guide slots 119, 120 and the pin 118 rotated slightly in the opposite direction »

The housing part 91 has inlet and outlet ports 132 and 133, respectively that extend up to the bore 97 «, two further nozzles 13 < 135 of the housing part 91 act alternately as inlet otisr Outlet supports ,, They also reach up to the hole 97 = Die

27 ~

Nozzles 132 to 135 correspond to the nozzles 6 to 9 of the metering device 1 according to FIG.

The commutator valve element 98 and the housing parts 91, are provided with passages, the pressure medium from your Inlet nozzles 132 and one of the nozzles 134 or 135 to the and enlarged chambers of the Garotorgetriebes by the pressure medium from the contracting chambers of the gerotor gear to the outlet port 133 and the other Connection 135 or 134 can be performed.

The housing parts 91, 92 are with one of the number of teeth of the Toothed ring 93 corresponding number (in this case seven) of substantially axially extending on the circumference channels 136 to 142 arranged in a distributed manner. The Ka-

[channels 136 through 142 extend from points between the

Teeth of the ZahnTinges 93 iis inner space of the ZahnrinoQS (Figure 14) through the housing parts 92 and 91 and open radially into the bore 97 of the housing part 91, where connections between the stationary channels 136 to 142 and passages of the commutator valve element 98 are made (Figure 18) _o These passages consist of a first group VDn of six passages G to L distributed around the circumference and a second group of six passages S to X also distributed around the circumference, which are spaced alternately between the passages G to L, if the commutator valve element 98 is rotated, the passages G to

»Β * 9

L and X to X one after the other with channels 135 to 142 im Housing part 91 brought to cover.

In the present flusführungsbeisoiel the passages G through L and S have to X dis shape v / to axially elongate ^c usnenmungen, whereby in all axillary layers of the commutator Jentilelomentes 93 a communication between the passages G through L and S to X and the K -jn ^ lsn 136 to 142 becomes possible.

For simplicity, in this Fa _- IIe, the connection between the channels 135-142 d9S housing and the passages G through L and 5 to X of Kommutatcr valve element takes place, referred to the one illustrated in Figure 13 level is as Kommutierungssbene. In the directing plane, the outer periphery of the Kotnmutgtor valve panel 98 is divided into sections, whereby the passages G to L and S to X fully occupy twelve sections, spaced apart from one another. The channels 136 to 142 have in the Kotiimutierungseben Rm fluGenumfsrr over Konssrutator-Ver.tilslsmentes 9? the same initial ^ bfr ^ psuncen mi? the passages G to L and S to X.

If the Kcmniutgtor-l'gntilelement 98 we turn ^, flees depending on the direction of rotation, pressure medium through some of the passages G to L in the enlarging Ka ^^ er of the

29 -

bes and from the shrinking chambers of the gerotor gear into some of the passages S to X, or vice versa. In the position of the gear wheel 96 illustrated in FIG and the position of the commutator valve element 98 shown in FIG. 18 are dependent on the direction of rotation of the Commutator valve element 98 to each different momentary Flow conditions possible Ulenn the direction of rotation of the commutator valve element 98 runs counterclockwise in FIG. 18, pressure medium flows from the passages V ^ Ul and X through the channels 140 to 142 into the chambers 143 to 145 expanding. The expansion of the chambers 143 to 145 causes the gear 96 to rotate clockwise and that the chambers 146 to 148 contract, from which pressure medium then via the channels 136 to 138 into the passages G, H and I flow. UJsrsrs the direction of rotation of the commutatory anilielement 98 reversed, the direction of flow is opposite to that described in FIG gur 14 illustrated position of the gear 96, the chamber 149 is fully expanded, so that at this moment pressure medium flows down to the chamber 149 nor flows out of it- Im

The next moment, however, pressure medium comes out of the chamber

) into the passage U, if the commutator valve element

rotates clockwise, or from port 0 into the chamber 149, the commutator valve element 98 taenn against the Turned clockwise

24

• * - »· c« * * tte

- 30 -

The above description of the flow processes is only valid for one flow condition _; As long as the commutator valve element 98 rotates in one direction, however, pressure medium is always introduced into the expanding chambers from the passages of the commutator valve element lying on the same side of the eccentric line 158 and from the decreasing chambers through the passages on the other Ejected side of the eccentric line: In addition, the flow in the passages G to L is always the same, and depending on the direction of rotation of the commutator valve element 98 either applies to or from the gerotor gearbox. The same applies to the passages S to X to, with the exception that the direction of flow in the passages S to X is always opposite to the direction of flow in the passages G to L.

The commutator valve element 98 usually has circumferential diamonds 150 and 151, which overlap the inlet connection 132 and are in communication therewith, uienn the commutator valve

Valve element 98 is also provided with two university grooves 152 and equipped, which cover the outlet connection 133 and are in communication with this, menn the commutator valve element 98 is in the neutral position. UJenn the commutator valve element 98 Bjird moved to the right out of the neutral position, the university grooves 150 and 152 come with the

tilelement? d is in the neutral position. The commutator

• ·

- 31 -

let or «the outlet connection 132, 133 in connection; at a shift from the neutral position to the left, the circumferential grooves 151 and 153 with the inlet and outlet ports 132, 133 in connection.

Ziuei further circumferential grooves 154 and 155 of the commutator valve element 98 are in each axial position of the commutator valve element 98 with the connecting pieces 134, 135 in connection. In the commutator valve element 08, six axially extending channels are formed, of which three, namely the channels 156, connect the circumferential grooves 150 and 153 with one another, while the other three, namely the channels 157, connect the circumferential grooves 151 and 152 with one another. In the commutation plane illustrated in FIG. 18, the channels 156 are connected to the passages H, 3 and L via short, radial openings, while the channels 157 are connected to the passages T, V and X via short, radial openings ο

When the commutator valve element 98 is in the neutral position stands, pressure medium flows from the inlet connection 132 into the circumferential grooves 150, 151, passes from there via the channels 156, 157 into the circumferential grooves 152, 153 and emerges from the outlet port 133 off. In the neutral position of the commutator valve element 98, pressure medium is thus supplied directly from the inlet connection 132 directed to the outlet connection 133. When the steering wheel 107 is turned in one of the two directions, the communication

bbO1424

• ■ · · · * J j

«4 t * · I. . j

• ac «a *. · T > · ■ st

- 32 -

tator valve element 98 moved in the axial direction. U / enn represent ^; Kotniutator valve element 98 moved to the right vaird, the circumferential groove 15D is aligned with the inlet port 132; Since the circumferential groove 153 is blocked, pressure medium flows via the channels 156 to the passages H, 3 and L. At the same time, the circumferential groove 152 is aligned with the outlet nozzle 133; If the circumferential groove 151 is blocked, pressure medium is passed from the passages T, V and X via the channels 157 to the outlet nozzle 133. If the commutator valve element 98 is shifted to the left, the flow direction is reversed and pressure medium flows from the inlet connection 132 to the passages T, V and X, while pressure medium flows from the recesses H, 3 and L to the outlet connection 133.

The annular web, eier the circumferential grooves 154 and 155 of the commutator valve element 98 separates, there are six recesses which are each connected to one of the circumferential grooves 154 or 155 and the passages G, S, I, U, K and Ui of form both of the above-mentioned passage groups. The passages G, I and K are with the circumferential groove 154 and the connecting piece in constant communication, while the passages S, U and UJ are permanently connected to the circumferential groove 155 and the connecting piece 135 are «Ulenn a remotely arranged work motor, for example the work motor 5 in Figure 1, on the nozzle 134, is connected, the metering device 1B is dependent from the direction in which the commutator valve element is rotated with respect to the housing part 91, pressure medium

• t - - - e

"via the passages G, I, K and the connecting piece 134 on the one hand On the side of the working motor, pressure medium from the other side via the connecting piece 135 and the passages S, U and Ui are discharged, or vice versa.

In operation, the steering wheel 107 is turned in one way or the other Rotated until the pin 118 at the ends of the

'· Guide slots 119, 120 stop. After that, they turn

η steering wheel 107 and the commutator valve element 98 together

compared to the housing part 91, with a commutation ziui-

• ί see the passages G to L and S to X of the commutator

^{E |} »Valve element 98 and the channels 136 to 142 takes place.

For example, turn the steering wheel 107 clockwise ^; When rotated, the commutator valve element 98 is shifted to the left from the neutral position and rotated counterclockwise in FIG. The channels 157 come into communication with the inlet port 132; Pressure medium flows into the passages T, V and X of the commutator valve element. The passages H, 3 and L are connected to the outlet connection 133 via the channels 156 at the moment when the commutator valve element 98 is in the position illustrated in FIG. 18 and the gearwheel 6 is in the position illustrated in FIG Assumes position, pressure medium flows from the inlet connection 132 via the passages V and X and the channels 1 1 142 to chambers 143 and 145 of the gerotor transmission, which expand ai. An enlarging chamber 144 is in this WIi ment via the channel 141, the passage U) and the circumferential groove

% J

with the connection 135 in connection, so that pressure medium flows through the connection 135 into the enlarging chamber 144 Can pull on the right side of the eccentric line 158 chambers 145 to 148 come together; located in the chamber 147 Pressure medium is supplied via the channel 137, the passage H, the channel 156 connected to it and the circumferential groove 153 driven to the outlet port 133 ,, the in the chambers 146 unJ 148 located pressure medium uiird under pressure via the channels 136, 138, the passages G, I and the circumferential groove 154 are driven to the connector 134. As a result, you are at this moment A measured amount of pressure medium is conveyed from the gerotor gearbox to the connector 134, while Bine is a measured amount of pressure medium It is received by the gerotor gear via the connection 135 and is used in this way in the case of a work engine, for example the working motor 5 according to Figure 1, which is connected to the connection 134, 135, soujohl the supplied as well as the

The amount of pressure medium it delivers is metered through the expanding and contracting chambers of the gerotor gear, When turning the steering wheel 107 in the opposite direction, de ho counterclockwise, there are similar flow conditions, with the exception that the pressure medium flow to and from the nozzles 134, 135 is reversed "

Sclanga the commutator valve element 98 is turned over the steering wheel in one or the other direction, so that the connection between the inlet port 132 and one of the passage groups H, 3, L or T, V, X is maintained

^ ■ ·

♦ · · Il

- 35 -

remains, the commutator valve element 98 continues to rotate and add the dosed amounts of pressure medium to the ports with the nozzles 134 and 135 connected work engine promoted and derived from it. When the steering wheel 107 is stopped, turn the commutator valve element 98 moves a few degrees further; the commutator / valve element 98 moves in the axial direction moved into the neutral position with respect to inlet and outlet ports 132, 133.

In the case of the metering device 1B, the arrangement is such that, during operation, each of the nozzles 132 to 135 is connected to three passages of the commutator valve element. If the steering wheel 107 is turned to the left, so that the commutator valve element 98 moves in the axial direction to the right, the passages are in the order G, S, H, T, I, U, 3, V _f K, UJ, L, X connected to nozzles 134, 135, 132, 133, 134, 135, 132, 133, 134, 135, 132 and 133. However, other arrangements can also be provided for gerotor gearboxes with a tooth ratio of 7: 6. For example, either four or eight instead of six of the passages G to X can be connected to the inlet and outlet nozzles 132, 133 during operation of the device. If four of the twelve passages G to X can be connected to the inlet and outlet connections 132, 133, eight of the passages are connected to the connection 134, 135. If eight of the twelve passages G to X can be connected to the inlet and outlet nozzles 132, 133, there are only four correspondingly

6 4 *

• ♦ * t ·

leave available for connection to nozzles 134, 135 «

Figures 23 to 33 show a metering device 1C geffiäe eif? Ss? third embodiment. gsbsispisl dsr invention. The housing of the metering device 1C consists of a tubular housing part 160, an annular plate 161, an internally toothed ring 162 forming a gerotor housing and an end plate 163 _O the end plate 163, which laterally closes the gerotor housing, and the housing parts 160 to

162 are by means of several screws distributed around the circumference

164 held together axially aligned. An externally toothed gear 165, which has at least one tooth less than the toothed ring 162, meshes with the teeth of the toothed ring 162 »

with the exception that the gear 165 has a central bore 166 aufiysisfe und de @ d? ** \ J *? i? * ifcni * between dsn teeth yen tooth— ring and gear wheel 8: 7 instead of 7: 6 as is the case with the first two embodiments of the invention, the toothed ring 162, the gear 165, the annular plate 161 and the end plate

163 with the corresponding parts of the first embodiment be identical to the invention; they are therefore not described in more detail.

In a bore 167 of the housing part 160 sin cylindrical valve element 168 is mounted axially displaceably, the has a concentric bore 169 at its right end.

KJ

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ί ■ I> ·, tr · ■

1 1 I k 1 J, »

1 · Il · '

fill 1

1.) JSl »I» t 'Λ

- 37 -

The valve element 16Θ has cylindrical parts 170, 171 of smaller diameter at opposite ends and a tapered dimple section 172 at its left end. The housing part 160 is provided with bores 173, 174 at both ends. The length of the middle part of the valve element 168 between the parts 170, 171 corresponds to the mutual spacing of the bores 173, 174. When the valve element 168 assumes the neutral position illustrated in FIG 173, 174. The boreholes 173 ^! , 174 are of sufficient depth to allow axial movement of the valve element 168 in either direction with respect to the neutral position.

The housing part 160 carries an annular flange at its left end 175. A steering wheel 175 with sinsr Nsbs 177, the one Bore 178 and a counter bore 179 is on the Housing part 16G fastened so that it is in the axial direction held, but rotatable with respect to the housing part 160 is »For this purpose the ring flange 175 is rotatable in the counterbore 179 and is a on the hub 177 by means Screws 181 fastened retaining ring 180 provided, which is attached to the annular flange 175 slidably rests.

A sleeve 182 with an annular flange 183 is between the Hub 177 and the Uiellabschnitt 172 arranged and by means of Bolts 184 firmly connected to the hub. The UJellenabschnitt

U1424

- 38

172 usually has a radially directed bore 185 into which sin Pin 186 is pressed in «The sleeve 182 is on opposite sides Sides provided with inclined guide slots 187, 188, the width of which is approximately the diameter of the pin 186 corresponds «If the steering wheel 176 in one way or the other Direction relative to the housing part 160 is rotated the valve element 168 through the interaction between the guide slots 187, 188 and the pin 186 in the axial direction moved out of the neutral position »

Ring disks 189, 190 are at opposite ends of the Valve element 168 arranged in annular spaces between the counter bores 173, 174 and dsn cylindrical Parts 170, 171 are formed »In these rooms are coil springs 191, 192 housed with the washers 189j 190; the hub 177 and the plate 161 are engaged. The coil springs 191, 192 hold the valve element 168 in its neutral position resilient and lead it back into this position when the steering wheel 175 after an axial deflection of the valve element causing rotation.

^d give uiirdo

In the bore 169 of the Ventiieletnentes a! Light 195 is housed, the gear 165 and the Uentilelement 168 mechanically verbindei each other _e The fflittslhohrung 166 of the gear 165 is concentric with the teeth of the gear "On the side facing the gear end of the! Ropes 195 sits ain

enlarged, cylindrical head 196, of the same diameter uiie has the center bore 166 and the one with reference to the axis of rotation 197 of the valve element 168 is arranged eccentrically The valve element 168 is provided with a bore which runs transversely to the bore 169 and in üie a pin 199 is pressed in. The shaft 195 is a Slot 2CO on, which is the same width tsie the pin 199 hat «, the pin 199 engages in this slot and worries for a drive connection between the Ulelle 195 and the Valve element 168 “An axial deflection of the Ulelle 195 becomes by the sliding engagement of the side surfaces of the head 196 with the plate 161 and the end plate 163 prevented. The slot 200 is long enough to allow the valve element 168 to be axially bent «

The UJelle 195 causes the valve element 168 to move synchronously rotates with the orbital motion of the gear 165. A gear 165 with seven teeth leads one revolution around his own axis 201, while the gear wheel in the opposite direction seven times around the axis 197 of the toothed ring 162 runs around »As a result, the right end of Ulelle 195 leads together with the gear 165 from a revolving movement while the left end of the shaft rotates together with the valve element «

It is assumed that the metering device 1C has no pressure medium the metering device works mechanically

■ * * * 1 tit * tt * · Ii

- 40 -

in the orphan that a turn of the steering wheel 176 in the one or other direction, a rotation of the hub 177 with Bazug the housing part 160 caused the guide slots 187, 188 so cooperate with the pin 186 that the Ventilelsment 168 in one direction or the other against the minor Resistance of one of the two coil springs 191, 192 is axially displaced until the opposite ends of the guide slots 187, 188 abut against the pin 186 and one Further relative movement between the steering wheel 176 and the valve element 168 Prevent, If the steering wheel 176 is turned further, the steering wheel and the uantile element 168 become common adjusted, the shaft 195 being rotated via the pin 199 willo The rotary movement of the dent 195 leaves the gear wheel 165 opposite the axis 197 of the ring gear 162 in the direction of rotation of the shaft 195 revolve, when the rotation of the steering wheel 176 is terminated, one of the coil springs 191 or 192 performs the U-valve element 168 in the axial direction into its neutral position return. The steering wheel 176 is made possible by the interaction between the guide slots 187, 188 and pin 186 rotated slightly in the opposite direction.

The housing part 160 has inlet and outlet ports 202 and 203, respectively that extend up to the bore 167 ", two further nozzles 204, 205 of the housing part 160 serve alternately as inlet or Triggering nozzle ”, they also extend to hole 167. The nozzles 202 to 205 correspond to the nozzles 6 to 9 of the metering device 1 according to FIG.

υ 1 4 Z 4

* - -c * I * · · I • · ί
-β »·· * e» ι ί »e« * a »· ·· ·«

- ⁴¹

The valve element 168 and the housing details 160, 161 are with Provided passages through the pressure medium from the inlet

j; nozzle 202 and one of the nozzles 204 or 205 to the itself

f enlarging chambers of the gerotor gear and passed through

■ i the pressure medium from the contracting chambers of the

I gerotor gear to the outlet port 203 and the other

;, Nozzle 204 or 205 can be guided «

jj The housing parts 160, 161 have one of the number of teeth of the

'· The number corresponding to the toothed ring 162 (in this case

'i eight) of essentially axially extending circumferentially

| i divides arranged channels 2o6 to 213 provided. These channels

_t extend from points between the teeth of the gear ring

■ || ges 162 in the interior of the toothed ring (Figure 25) through the gel
, »Housing parts 161 and 160 and open radially into the

j bore 167 of the housing part 160, where connections between

the stationary channels 206 to 213 and passages of the valve

^ elementes 168 are produced (Figure 29) _O these passages

consist of a group of six circumferentially distributed

\ let A to F ₀ If the valve element 168 is rotated, who

which the passages A to F are brought one after the other to coincide with the channels 206 to 213 of the housing part 160 "

Have in the illustrated embodiment of the invention the passages A to F take the form of recesses elongated in the axial direction, whereby in all axial positions of the Valve element 168 a connection between the passages

\) 1 42

= 42 A to F up.G the channels 206 to 213 possible iuirdo

The level illustrated in FIG. 29, in which the connection between the channels 206 to 213 of the housing and the passages A to F of the valve element takes place, is referred to as the distribution level to F have a mutual distance which is approximately equal to the circumferential width of each channel 206 to 213 at the points at which the channels 206 to 213 open into the bore 167 ₀

When the valve element 168, which can be referred to as a distributor valve element, is rotated, depending on the direction of rotation of the same pressure medium flows through the passages A, B and C on one side of the eccentric line X into the enlarging chambers of the gerotor gear and from the reducing chambers of the gerotor gear into the passages D, E and F on the other side of the eccentric line X, or vice versa to 209 in chambers 214 to 216, which expand. The expansion of chambers 214 to 216 causes the gear 165 to run clockwise and that the chambers 217 to 220 contract = The pressure medium flows from these chambers via channels 211 to 213 to passages D, E and F ₀ UJenn die

Sk

The direction of rotation of the valve element 168 is reversed the direction of flow opposite to that described. In the position of the gear 165 illustrated in FIG the chamber 217 is fully expanded, so that at this moment Pressure medium neither flows in nor out of the chamber 217 you flow off = In the next moment, however, pressure medium from the chamber 217 in the passage D, if the valve element 168 rotates clockwise, or from passage C into chamber 217 when valve element 168 counteracts rotates clockwise,

The above description of the flow processes is only valid for an instantaneous state. “As long as the valve element 168 rotates in one direction, however, fluid is always introduced from the passages of the valve element located on the same side of the eccentric line X into the expanding chambers and through the decreasing chambers the passages are ejected on the other side of the eccentric line. In addition, the flow in passages A to C is always directed in the same way, and depending on the direction of rotation of valve element 168 either to the gerotor gear or from it _{and the} same applies to passages D to F to, with the exception that the direction of flow in the passages D to F is always opposite to the direction of flow in the passages A to C iet ₀

• · B t

_ 44 -

The Ventilelsment 168 usually has two circumferential grooves 221, 222, which overlap the inlet connection 202 and are in communication therewith when the valve element 168 is in the neutral The valve element 168 is also located with two circumferential grooves 223, 224 equipped, which the Ausiaöstutzen 203 cover and are in communication with this when the valve element 168 is in the neutral position. When the valve element 168 moves to the right from the neutral position is moved out, the circumferential grooves 221, 223 come into connection with the inlet connection 202 and the outlet connection 203, respectively; when shifting from the neutral position to the left, the circumferential grooves 222, 224 with the inlet connection 202 or connected to the outlet nozzle 203 «

Additional circumferential grooves 225, 226 of the valve element 168 are in connection with the connecting pieces 204, 205 in every axial position of the valve element four axially extending channels formed, of which zuiei, namely the channels 227, the circumferential grooves 221 and Connect 224 to one another, while the other two, namely the channels 228, connect the circumferential grooves 222 and 223 to one another » In the distributor level illustrated in FIG. 29, the channels 227 are via short, radial openings with d8n Passages A and C connected, while the channels 228 via short, radial openings to the passages D and F of the valve element are connected o

• * * I I

• · »I f

When the valve element 168 is in the neutral position, pressure medium flows from the inlet connection 202 into the circumferential grooves 221, 222, from there via the channels 227, 228 into the circumferential grooves 223, 224 and exits the outlet connection 203. In the neutral position of the valve element 168, pressure medium is diverted directly from the inlet connection 202 to the outlet connection 203. When the steering wheel 176 is turned in one of the two directions, the valve element 168 is displaced in the axial direction. When the valve element 168 is turned to the right, the circumferential groove 221 is aligned with the inlet connection 202; Since the circumferential groove 224 is blocked, pressure medium flows via the channels 227 to the passages A and C _0. At the same time, the circumferential groove 223 is aligned with the outlet connection 203; If the circumferential groove 222 is blocked, pressure medium is directed from the passages D and F via the channels 228 to the outlet port 203 Passages D and F, while pressure medium flows from the passages A and C to the outlet connection 203 "

The annular ridge that the circumferential grooves 225, 226 of the Valve element BS 168 separates, mostly to / ei recesses, the jeuieils are connected to one of the circumferential grooves 225 or 226 and the passages B and E of the valve element form * The passage B stands with the circumferential groove 226 and the nozzle 205 in constant contact with the passage E continuously

~ 46 -

the circumferential groove 225 and the connection 2Ü4 is connected _o If a remotely arranged work _{motor, z o} B ₀ the work motor 5 in Figure 1, is connected to the supports 204, 1205, the metering device 1C depending on the direction in which the valve element 168 is rotated with respect to the housing part 160, pressure medium reach one side of the working motor via the passage B and the connection 205, while pressure medium is discharged from the other side via the connection 204 and the passage E, or vice versa.

In operation, the steering wheel 176 operates in one way or the other Rotated direction until the pin 186 at the ends of the Guide slots 187, 188 strikes «, Then they turn "ikiäd 176 iifrd das Vefiiiisieissnt 168 csirssinssin qsqs.nübsr the housing part 16Q, with a pressure medium distribution between the passages A to F of the valve element "168 and the channels 206 to 213 takes place" When the steering wheel 176 for example, is rotated clockwise, the valve element will turn 168 shifted from the neutral position to the left and rotated counterclockwise in Figure 29 «, The channels 228 come into communication with the inlet port 202; Pressure medium flows into the passages D and F of the valve element, the passages A and C are with the channels 227 the outlet connection 203 in connection with »At the moment, in which the valve element 168 is shown in FIG In the clear position, gear 165 is located in FIG. 25

«T <I I

assumes the position shown, pressure medium flows from the inlet connection 202 via the passages D and F and the channels 211, 213 to the chambers 218 and 220 of the gerotor gear, which expand «The expanding chamber 219 is at this moment via the channel 212, the passage E and the circumferential groove 225 are connected to the connection piece 204, so that pressure medium can flow into the enlarging chamber 219 via the connection piece 204. On the left side of the eccentric line X, the chambers 214 to 216 pull together; Pressure medium located in chambers 214 and 21b is conveyed via channels 207, 209, passages A, C, channels 227 and circumferential groove 224 to outlet connection 203. Pressure medium located in chamber 215 is under pressure via channel 208, the passage B and the circumferential groove 226 driven to the nozzle 205 »Consequently uiird at this moment, a measured pressure Mitt amount of oil from the Gerotorgetriebe to the nozzle 205 promoted iuird mährend added to a measured quantity of pressure fluid through the pipe 204, Gerotorgetriebe _o in this UJeise uiird at a working engine, for example, the working motor 5 according to Figure 1, which is connected to the connection 204, 205, souiohl the supplied to it and the amount of pressure medium released by it by the increasing and ί

contracting chambers of the metered Gerotorgstriebes In \ rotation of the steering wheel 176 in the opposite direction, d. h «counterclockwise, there are similar flow conditions, with the exception that the pressure medium flow to and from the nozzle 204, 205 is reversed.

424

= 48 -

As long as the valve element 168 via the steering wheel 176 in the one or the other in the other direction is rotated so that the connection between the inlet connection 202 and one of the passage groups A, C or D, F is maintained, the valve element 168 rotates further and compared to the dosed Pressurized medium quantities conveyed into the working motor connected to the connection 204, 205 and if derived from it the steering wheel 176 is stopped, the valve element rotates » inent 168 a few degrees further; thereby the valve element 168 through the interaction between the pin 186 and dan guide slots 187, 188 in the axial direction in the neutral position with respect to the inlet connection 202 and the Outlet port 203 shifted

The dispensing device 1C is arranged in such a way that that in operation the inlet connection 202 and the outlet connection 203 are each connected to the additional passages of the valve element 168. When the steering wheel 176 is turned to the left So that the valve element 168 is displaced to the right in the axial direction, the inlet connection 202 connected to the two passages A, C, while the outlet connection 203 with the two passages D and F in connection comes "However, other arrangements can also be provided" For example, only one of the passages A to F can be connected to the inlet connection 202 and only one passage to the outlet supports 203 four of the passages A to F are designed for the nozzles 204, 205 »

uses, instead of only the two passages B and E, uiio this is the case with the illustrated metering device 1C.

Figures 34 to 45 show a metering device 1D according to a fourth embodiment of the invention, the housing of the metering device 1D consists of a tubular housing part 230 equipped with an annular flange Housing part 231, an annular plate 232, a cylindrical rotor housing part 233 and an end plate 234. The housing parts 230, 231 are held together in an axially aligned manner by means of a plurality of screws 235 distributed around the circumference. The end plate 234, which the rotor housing part 233 laterally completes, and the housing sets 231 to 233 s. -, d means on the circumference distributed screws 236 assembled axially aligned.

The housing parts 230, 231 together form a bore 237 r
'with an axis 238 in which a verse with a bore 240

henes, tubular, cylindrical manifold valve element 239 is rotatably mounted »in the bore 240 of the distributor valve element 239, a cylindrical control valve element 241 with a bore 242 and a counter bore 243 is rotatable mounted The valve elements 239, 241 lie coaxially with respect to the axis 238 "

The rotor housing part is evident from FIGS. 34 and 37 233 a bore 244 with an axis 244a, the

eccentric to the axis 238 «, the distributor valve element 239 usually has a cylindrical rotary piston at its right end 245, which has a smaller diameter than that inside the bore 23? lying part of the divider = valve element has, to which the rotary piston 245 is concentric »The Rotary piston 245 extends through the bore in plate 232 and rests against it in a sealing manner Rotary piston 245 corresponds to the width of housing parts 232, 233 together. Rotary piston 245 is in that of the bore 244 of the rotor housing part 233 and the bore of the plate 232 formed space around the axis 238 rotatably arranged. Of the Rotary piston 245 has a plurality of radially extending slots distributed around the circumference, in which rectangular vanes 246 are displaceable are housed, which have the same width ujie the rotor housing part 233 »During the rotation of the rotary piston 245 put the wings 246 against the inner surface of the bore 244 in a sealing manner, so that calibrating and enlarging reducing chambers are formed in the figure shown in FIG 37 illustrated position of the rotary piston 245, the chambers to 252 are o UJenn the rotary piston 245 for example in "Figure 37 rotates clockwise, pressure medium is supplied to the expanding chambers 247 to 249 and out of the constricting chambers 250 to 252 derived »Reverse Conditions arise if the rotary piston 245 is contrary rotated clockwise

The control valve element 241 has an annular pin

Il

11 f 4 11 | ((Il ¹ <■

- 51 -

bearing 253, which is rotatably seated in a shackle bore 254 of the housing part 230, the bore 243 of the control valve element 241 has a spline 255 on _o A control shaft 256 with an end part 257 that carries a Ksilvsgende züssmfflsntiiirksende with the spline f 255 to * rotate the control valve element 241 ”, UIf the metering device I ID is provided in a vehicle steering device, | the 5teueruielle 256 connected to a steering wheel (not shown) |

The control valve element 241 is in the neutral position with loading | shown on the distributor VsntilelemBnt 239; it can be rotated by a limited amount in relation to this. In order to enable this limited rotation, a pin 258 (FIGS. 34 and 35) is provided, opposite sides of the distributor valve element is pressed in «. Οθγ pin 258 extends transversely through the bore 240 through "mutually diametrically opposed circumferential slots 260, 261 of the control valve element 241 Erlau j ben limited relative rotational movement between the valve i

elements 239 and 241 _o If the control valve element 241 is rotated out of a neutral position in one of the two directions, the pin 258 rests against opposite ends of the circumferential slots 260, 261. If the pusher valve element 241 is rotated further, the distributor valve element becomes 239 taken

1424

- 52 -

IYI by means of leaf springs 262 (Figure 44), which are calibrated by being diametrically opposed opposite openings 263 of the VerteÜBr valve element 239 and two diametrically opposite openings 264 of the control valve element 241 extend therethrough the control valve element 241 in its neutral position with reference held on the distributor valve element 239, in which the circumferential slots 260 and 261 with respect to the pin 258 centric lie.,

It is assumed that the metering device 1D has no pressure medium supplied, the metering device works mechanically in such a way that rotation of the control rod 256 in one or the other direction a rotation of the control valve element 241 relative to the divider valve element 239 caused against the slight resistance of the leaf springs 262 until the opposite ends of the circumferential slot 260 » rest on the pin 258 »when the control valve is rotated forward 256 iuerden the valve elements 239, 241 adjusted together The rotary movement of the divider valve element 239 has the consequence that the rotary piston 245 compared to the rotor ■:

Housing part 233 rotated when the control unit 256 is released In practice, the control valve insert 241 rotates under the Influence of the leaf springs 262 by a small amount in the opposite direction until it joins the neutral position With respect to the distributor u-valve element has reached 239 «,

The housing part 231 mostly inlet and outlet ports 268 _{or the like}

424

~ 53 -

that open into the bore 237 «Two more nozzles 270, 271 of the housing part 231 act alternately as inlet IaQ and as outlet, they also reach up to

Bore 237 _O The nozzles 268 to 271 correspond to the nozzles 6 to 9 of the metering device 1 according to FIG. 1.

The divider valve element 239, the control valve element 241 and the housing part 231 are provided with passages through which pressure medium from the inlet port 268 and one of the ports 270 or 271 passed to the expanding chambers of the rotary piston and by the pressure medium from the contracting ones Chambers to the outlet port 269 and the other port 271 bzuio 270 can be performed.

The rotary piston 245 and the divider valve element 239 are «It channels 272 to 277 provided, dis of places between the vanes 246 of the thrust piston 245 radially inwards

j * chen and then run essentially in the axial direction.

j The channels 272 to 277 are as shown in detail in FIG. 38

j emerges, arranged distributed around the circumference

i; By means of the control valve element 241, the pressure medium

Supply and discharge to and from channels 272, 274, 275 and 277

with respect to the inlet and outlet ports 268, 269 controlled uier- {j the, so that the rotary piston 245 is optionally in one

the other direction and pressurized medium over the cable

ä channels 273 and 276 flows out of one of the nozzles 270 or 271

f ""

■> »·> a i j 3 ·,

'UJ J MJ, »■} J ₃ , V

■ - 54 »and enters the other nozzle 271 or 270»

On the inner surface * of the bore 237 of the housing part 231 Annular grooves 278, 279 are provided, which are connected to the inlet port 268 bzui. the outlet port 269 are in connection «Das Distributor valve element 239 has openings 280 to 285 distributed around the circumference and running in the radial direction (Figures 42 and 43), of which the openings 280, 282 and 284 with the inlet port 268 and the openings 281, 283 and 285 are axially aligned with outlet port 269. The control valve element 241 has six circumferentially distributed Slits 286 to 291 which extend between the planes of inlet nozzles 268 illustrated in FIGS. 43 and 42 and outlet port 269 extend,

Dis Vantileismsnte 239 and 241 are in the neutral position with Relation to one another illustrated If one uses this new = central position as reference position, shows the distributor = valve element 239 has two openings 292 and 293, which lie in the planes of the inlet connection 268 and the outlet connection 269 and with the slot 286 of the control valve element 241 are radially aligned. If the valve elements 239, 241 are in the are shown neutral position, pressure medium is from the inlet port 268 via the annular groove 27S, the opening 292, the Slot 286, the opening 293 and the annular groove 279 are derived directly to the outlet connection 269 »

O ^ ^l ■ '

• β * · a

Slndo the Stauerventilelement 241 has circumferential grooves 294 and 295c The slots 286 _f 288 and 290 are connected via three axially extending channel 296 with the circumferential groove 294, while slots 287, 289 ur-i 291 Upper DRSI axially extending channels 297 connected to the peripheral groove 295

On the inner surface of the bore 237 of the housing part 231 In the planes illustrated in FIGS. 41 and 39, annular grooves 298 and 299 are formed, which with the initial grooves 294 and 295 of the control valve element 241 are axially aligned sindo The distributor valve element 239 has radially extending openings in the planes of FIGS. 41 and 39 and 301, of which the opening 300 connects the grooves 294 and and the opening 301 connects the grooves 295 and 299 to one another,

In operation, the control valve element 241 is rotated in one direction or the other with respect to the housing and the vertailer valve element 239 until the pin 258 strikes the ends of the circumferential slot B 260, 261 of the distributor valve element. Then the valve elements 239 and 241 rotate together opposite the housing _, if the StenjerventilBlement 241 in the figures 42 and 43 is rotated clockwise until the pin 258 rests against the ends of the receiving slots 26O ₈ 261, the Schlltza 287, 289 and 291 come through alignment with the openings 282, 284 and 28Ö with the inlet

nozzle 268 in connection, while the slots 286, 288 and 29Π are connected to the outlet nozzle 269, because they come to cover the openings 281, 283 and 285, so the control valve 241 in Figures 42 and 43 are rotated clockwise ujird, the inlet port 268 comes through the annular groove 278, the openings 280, 282, 284, the slots 287, 289, 291 _s the channel 297, the circumferential groove

295 and the opening 301 with the annular groove 299 in connection, while the outlet port 269 via the annular groove 279, the openings 281, 283, 285, the slots 286, 288, 290, the channel 296, the circumferential groove 294 and the opening 300 to the annular groove 298 connected ujirdo when turning the control valve element 241 in the opposite direction, the situation is reversed insofar as the inlet port 268 with the Annular groove 298 and the outlet connection 269 with the annular groove 299 get in touch

The housing part 231 is in the plane of FIG. 40 between the annular grooves 298 and 299 with curved channels 302 and 303 provided on opposite sides of the perpendicular center line 304 of the metering device. The channels 302, 303 are separated from one another by webs 305, 306 of the housing part. The channel 302 (FIG. 40) is via a passage 307 of the housing part constantly with the Annular groove 298 connected, while the channel 303 (Figures 39 and 40) via a passage 308 of the housing part with the annular groove 299 is in constant contact »By turning the control

1424

- ".-, ..,. .ini-jainii ^ k _

veniilelementas 241 in one direction or the other In this way the channels 302 and 303 can optionally be connected to the inlet and outlet nozzles 268, 269 «

Pressure medium is conducted via the channels 272, 274, 275 and 277 of the divider valve element 239 from the passages 307 and to the chambers 247, 249j 250 and 252. The channels 272, 274 ₉ 275 and 277 are provided in the plane illustrated in FIG. 40 with short, radially extending sections which extend into the bore 23? of the housing part 231 and which are in communication with the channels 302 and 303. Each of the channel sections running radially in the plane of FIG. is equal to the width of the webs 305 and 306 which separate the channels 302 and 303 from one another «,

ji If the control valve element 241 in Figures 42 and 43 in

, 1 turned clockwise, pressure medium flows from the inlet =

_t | clip 268 through slots 287, 289 and 291, the channels

j 297, the circumferential groove 295, the opening 301 of the distributor valve

element 239, the annular groove 299, the passage 308, the channel 303 and the channels 272 and 274 of the SteueruentilBiBmBntes to the chambers 247 and 249, which ausdBhnen _o From the contracting chambers 250 and 252, pressure medium flows through the channels 275 and 277 im Manifold valve element 239, the channel 302, the passage 307, the annular groove 298, the opening in the manifold valve element 239, the circumferential groove 294, the channel

channels 295 in the control valve element 241, the slots 286, 288 and 290 of the distributor element3 239, the openings 281, 283 and 285 and the annular groove 279 to the outlet connection 269 »UJird the direction of rotation of the uantile elements 239 and 241 is reversed, the direction of flow is opposite to that described.

In the plane illustrated in FIG. 38, the housing part 231 is provided with two arched channels 309 and 310, which lie on opposite sides of the vertical center line 304 and are connected to the connecting pieces 270 to 271. The channels 309, 310 and by means of webs 311, 312 of the housing part separate pressure medium; ird from the channels 309 and 310 via the channels 276 bzui _c conveyed in the chambers 251 and 248 273 "The channels 273 and 276 are in figure 38 illustrated plane provided with short, radially extending sections "which open into the bore 237 of the housing part 231 and are connected to the channels 310 and 309". The radial sections of the channels 273 and 276 lying in the plane of FIG Diameter which is substantially equal to the width of the webs 311 and 312 which separate the channels 309 and 310 from one another,

If a remotely arranged work motor, Z ₀ B ₀ the work motor 5 in FIG. 1, is clipped to the connecting pieces 270 and 271, the metering device ID discharges the control valve element 241 as a function of the direction j

, § y

The neutral position is unscrewed, pressure medium pass through the supports 270 to one side of the work engine, while pressure medium is discharged from the other side via the connection 271, or vice versa, if the distributor valve element 239 and the rotary piston 245 are rotated clockwise in FIG. 37 the chamber 248 connected to the nozzle 271 via the channels 273 and 310 expands and pressure medium flows from the nozzle 271 to the chamber 248 from the chamber 251 to the nozzle 270 _o When the chambers 251 and 251 reach the point where they lie symmetrically with respect to the centreline 304, the chamber 248 is fully expanded and the chamber 251 fully contracted Connected channel 273 just disconnected from channel 310 and comes into contact with channel 309 in the next instant, so that pressure medium then flows out of the chamber 248 from the nozzle 270; The channel 276 connected to the chamber 251 has just been separated from the channel 309 at this moment and immediately afterwards comes into connection with the channel 310, so that pressure medium flows from the nozzle 271 to the chamber 251 nozzle 270 promoted mährend a metered amount of pressurized fluid received by the uiird DrBhkolben via the port 271 "in this way, at a working engine, z _{o 0} B the working motor 5 of Figure 1, to which the nozzles 270 and 271 =

»••• ti« τ g. i

·· I ti il ^s * * *

• I C * 7 ΐ

• · Bi - * ■■ * - »

# · E -f & t ^: s

• »t» 4 φ 5 r c i f 3

- 60 -

is closed, both the fed to it as well as the output from him Druckmittelmsnge by the enlarging and ¹ contracting chambers 248 and 251 dosed Upon rotation of the control valve element 241 in the opposite direction result similar Ströinungsbedingungen ^ with represent, except that the pressure medium flow to and from the Nozzle 270, 271 reversed is to

As long as the control valve element 241 is rotated via the control shaft in one direction or the other, so that the connection between the inlet port 268 and one of the slot groups 286, 288, 290 or 287, 289, 291 is maintained remains, the divider valve element 239 continues to rotate and metered amounts of pressure medium are added to the with the Stub 270 and 271 connected work engine required and If the control code 255 is released, derived from this uiirdj turns the ^ βγ ^ βϊΙβγ — valve learners} t 239 ΐίπι a few Just continue until it has again reached its neutral position with respect to the control valve element 241 »

Besides Gerotorgetrieben, the blade-equipped rotary pistons only an example of a device when the expanding and contracting chambers formed other devices of this type, eg _o B ₀ Axialzylindermotore and pumps can also be used _o The invention is also not limited to Aniuendungsfalle, where a reversal of the direction of flow is required _D Instead of manual actuation, another type of actuation can be provided «,

Claims (1)

Expectations Hydraulic adjusting device with a control device, one with an inlet port, an outlet port and two Housing provided with further connecting pieces, a device which forms chambers which are alternately enlarged and contracted, and a valve arrangement which interacts therewith has, characterized in that the valve arrangement (21,31; 91,98; 160,168; 231,239) is designed such that they the inlet connection (6, 62, 132, 202, 268) and one of the two further connections (8,9; 64,65; 134,135; 204,2Lj; 270, 271) one after the other with individual ones of the enlarging chambers (37 to 43; 143 to 149; 214 to 220; 247 to 252) and bit at the same time the outlet nozzle (7, 63, 133, 203, 269) and the other of the two other nozzles one after the other connects individual of the contracting chambers " 2. Hydraulic adjusting device according to claim 1, characterized by an oil / valve control device (33; 118 to 120; 186 to 188; 241), by means of which either one wire the other of the two other nozzles (8,9; 64,65; 134, 13B | 2u4,2G5j 27G, 27i) to the enlarging chambers (37 to 43; 143 to 149; 214 to 220; 247 to 252) and accordingly the other or one of the two other mare- - 62 zen can be connected to the contracting chambers, Hydraulic adjusting device according to claim 1 or 2 _? da · = characterized in that the inlet and outlet nozzles (14.15) of a hydraulic working motor (5) are connected to the two other nozzles (8.9? 64.65; 134.135; 204.205; 270.271) " 4 “Hydraulic adjusting device according to one of the preceding Claims, characterized in that the alternately enlarging and contracting. Chambers (37 to 43; 143 to 149; 214 to 220) forming device an internally toothed ring gear (23, 93, 162) and an eccentric has externally toothed gearwheel (27, 96, 165) arranged within the space enclosed by the toothed ring, that has at least one tooth less than the toothed ring, that one (27, 96, 165) of these two toothed parts revolving around the axis of the other of these toothed parts and one (27, 96, 165) of these two toothed parts executes a rotary movement around its own axis and that the one another meshing teeth of the toothed ring and gear during a relative movement of these parts on one side of a Eccentric sealed, expanding chambers and sealed, contracting on the other side Let chambers emerge " 5c hydraulic adjusting device according to claim 4, characterized ge ° 24 * * ■ mm indicates that a rotatable valve element (31, 98, 168) | the valve arrangement (21, 31; 91, 98; 160, 168) via a drive member (51, 125, 195) is connected to one of the toothed parts (23, 93, 162 or 27, 96, 165) in such a way that the valve element rotates synchronously with one of the movements of one of the toothed parts » Hydraulic adjusting device according to claim 5, characterized in that indicates that the valve element (31,98) with the] rotating toothed part (27,96) is connected in such a way that \ it rotates synchronously with its rotational movement « 7. Hydraulic adjusting device according to claim 5, characterized in that that the valve element (168) with the rotating movement executing toothed Tsil (155) dsrsrt vsr = what is bound is that it is synchronous with this orbital movement turned 8a hydraulic adjusting device according to claim 6, characterized in that that in the housing (21, 22; 91, 92) distributed channels (66 to 72; 136 to 142) are formed on the circumference are in communication with the expanding and contracting chambers (37 to 43; 143 to 149) stand that the valve element (31,98) two groups of am Circumferentially distributed, alternating passages (A to F, ffl to R; G to L, S to X), the number of which within half of each group of the number of channels (66 to 72; 136 to 142) is different by one and which cooperate with the channels (66 to 72; 136 to 142) in such a way that when rotating the valve element (31,98) pressure medium from a passage group to the expanding chambers flows and pressure medium flows in the contracting chambers to the other passage group, and that during the rotation of the valve element (31 .98) of the passages of the one group at least one passage with the inlet port (62,132) and at least one passage with one of the two further nozzles (64,65; 134,135) as well as from the passages of the other group at least one passage with the outlet nozzle (63,133) and at least one passage with the other of the two other nozzles in Connection is » 9c Hydraulic adjusting device according to claim 8, characterized in that the passages (3, D, F or A, C, E; T, U, X or ,, S, U, II /) of one group alternate with the inlet nozzle (62,132) and one (64,135) of the two other nozzles and the passages (fll, 0, Q or »N, P, R; H ₁ J, L bzi». ί G, I, K) the other group alternating with the outlet port— j zen (63,133) and the other (65,134) of the two other I. Nozzles are connected _o j IDo hydraulic adjusting device according to claim 7, characterized in that that in the housing (160,161; 3i> Urafang vet— divided channels (206 to 213) are formed, which with the expanding and contracting chambers (214 to 220) are connected, that the valve element (168) two on opposite strings of the eccentric line has lying groups of passages (A to G, D to F) which interact with the channels (206 to 213) in such a way that that when turning the valve element (168) Pressure medium from a passage group to the enlarged chambers flows and pressure medium in the contracting Chambers to the other passage group, and that during rotation of the valve element (168) of the passages of the one group at least one passage with the inlet port (202) and at least one passage with one of the two further nozzles (204, 205) and at least one passage from the passages of the other group with the outlet nozzle (203) and at least one through Jj let in connection with the other of the two other nozzles jf dung stands ", S ^ <j 11 «Hydraulic adjusting device according to claim 10, characterized in that '_ indicates that of the passages of the one group ^ 'two passages (A, C) adjacent to the eccentric line ■ with the inlet connector (202) and one in between Passage (B) are connected to one (205) of the two other supports and that of the passages of the other group pe zorei adjacent to the eccentric line lying passages ff {O »F) a with the Ausls8stutzBn (203) and an in between - ordered passage (E) with the other (204) of the two other nozzles are connected " Adjusting device nsch Ai? £ 2 and sinsa of claims 9 to 11, characterized in that by means of the valve control device (33; 118 to 120; 186 to 188) the pressure medium connections between the two passage groups (A to F, IK! To R; G to L, S to X; A to C, D to F) and the inlet and outlet connections (62,63; 132,133; 202,203) are reversible " 13o hydraulic adjusting device according to one of claims 2 to 12, characterized in that the valve control device has elastic means (59; 123, 124; 191.192; 262) has that resiliently hold the valve element (31, 98, 168, 239) in an out of operation position » 14o hydraulic adjusting device according to one of claims 1 to 3, characterized in that the alternately enlarging and contracting chambers (247 to forming device comprises a cylindrical rotary piston (245) which is eccentric in a bore (244) of the housing is arranged between its outer periphery and the Inner surface of the bore (244) a crescent-shaped raura limited and provided with several spaced, radial slots in which back and forth moveable wings (24o) sit, the outer ends of which with the inside Always in sliding contact with the bore (244) j and the rotation of the rotary piston (245) between the j Inner surface of the bore and the outer circumference of the rotary piston on a rotary piston side enlarging chambers and on on the other side of the rotary caliper form constricting chambers «. 15o hydraulic adjusting device according to claim 14, characterized in that that the valve element (239) with the rotary piston (245) is connected to rotation. 16. Hydraulic adjusting device according to claim 15, characterized in that the valve element (239) has a group of circumferentially distributed channels (272 to 277) which are in communication with the chambers (247 to 252) that pressure medium when rotating the valve element flows in the channels on one side of the valve element to the expanding chambers and pressure medium in the contracting chambers flows into the channels on the other side of the valve element and that there is always at least one channel (272, 272, 274) with the inlet connector (268) and at least one channel (273) with one (2.1) of the two further connectors sou / ie on the other side of the valve element at least one channel (275, 277) with dsm AusiaSstutzsR (269) and at least bin Channel (276) is in communication with the other (270) of the two other nozzles 17o hydraulic adjusting device according to claim 16. characterized characterized in that of the channels (272 to 277) of the valve element (239) two channels (272, 274) lying on one side of the valve element with the inlet connector (268) and a channel (273) arranged between them with one (271) of the two outer sockets as well as ztuei on the other side of the valve element lying channels (275, 277) with the outlet nozzle (269) and one in between arranged channel (276) are connected to the other (270) of the two further nozzles « 18 «Hydraulic adjusting device according to claims 2 and 17, characterized in that the pressure medium connections between the Channels (272,274; 275,277) of the valve element (239) and the inlet and outlet nozzles (268,269) are reversible » 424