DE2620524C2 - Control device for the swivel position of a swivel body - Google Patents

Description

5 6

The swivel body, so the adjustment part, is directly connected to the joint body in an articulated manner with the axis, so the transmitter part cooperates, so that all intermediate can the hydraulic fluid supply to the swivel body members omitted. by expediently done by the hold-down.

It is essential to the invention that one of the two is relatively In many cases the target position of the swivel body

mutually movable parts of the follow-up control unit 5 given by a hydraulic control pressure, wherein

direction on or through the swivel body, the load of which this pressure acts on a piston, which on the other hand

ge is to be controlled, is formed and that the position is loaded by a spring, so that the position of the ICoI-

The determining transmitter element ("pilot element") is determined directly by the signal pressure. Will the

these are applied and preferably a similar control pressure is applied directly to the pressure chambers that

Swivel movement executes as the swivel body 10 effect position of the swivel body, given and

external forces act on the swivel body, both

The control makes it possible for the transmitter element to act, for example, via restoring forces, so these external forces act

Actuate cam or backdrop and thus either together with one of forces depending on their direction

ne freely selectable transfer function between the signal pressure against the spring or together with the

the arbitrarily actuated transmitter element and the spring against the control pressure and thus falsify the actual

Provide swivel body, in particular to achieve, neutrally achieved position. In order to avoid this,

that with small movements of the encoder element by a linearly displaceable servo control device

Central position around the swivel body in this opposite known, in or in front of the working piston a control

remains and that in the area of the central position of a piston ("pilot") to be arranged, that of the control pressure

Pivoting of the transmitter member is acted upon by a certain stop 20 and its position is the working piston

number of degrees a smaller pivoting follows. In an expedient embodiment of the present

of the swivel body is assigned as an invention is that of the hydraulic actuating pressure

Pivoting of the transmitter link by the same amount of angled actuating piston with the slide body

grade in the end areas, if necessary for bound. There are no forces acting on the valve body

both swivel directions out of the central position and onto the actuating piston, but the swivel body follows

Different transfer functions are always chosen depending on the position of the slide body and thus the

can. Control piston. It can also with this arrangement

Of particular importance is the control device to be appropriate, but it is not necessary that the

according to the invention in connection with the arrangement pressure fluid the slide body from the swivel

voltage which is fed from the die body for pivoting the swivel body. The actuating piston can

end pressure rooms. These pressure spaces can be understood in this way also volumetrically from hydraulic

be arranged on the circumference of the swivel body that pressure can be applied.

with swivel blades arranged on the welding body

or projecting dependent claims formed on the swivel body.

Swivel wings similar parts a swiveling device 35 The invention is described below with the aid of various

device based on the principle of a swivel vane drive explained ner embodiments, with others

will be. The pivoting device can, however, also be described as details and their advantages.

be formed by that on the swivel body two straight F i g. 1 shows a plan view of a control device

attack linearly displaceable actuating pistons, the device within one of these associated cover housings

Pressure medium in the pressure chambers in front of the end faces of the 40 ses of an adjustable axial piston swivel disc

Control piston is supplied by the control piston itself. machine.

It is particularly useful if each of the two F i g. 2 shows a device according to FIG. 1 on average

Adjusting piston on one side of the pivot axis of the perpendicular to F i g. 1.

Swivel body engages on this and the Stellzylin- F i g. 3 shows an adjustable axial piston pivot

which are parallel to each other. Is the swivel body of the 45 disk machine with a different embodiment of the

Swash plate carrier of an axial piston machine, the control device is accordingly in a sectional view

it is useful if four parallel to each other Fig.Z

Slidable actuating pistons are provided, the four Fig.4 shows a plan view similar to Fig. 1 in

Attack corners of the swivel body. Since the slide direction of the pivot axis on the control device

body is intended to determine the target position of the swivel body, 50 according to FIG. 3.

the valve body must be moveable. Fig. 5 and Fig. 6 each show in section through the

If the control pressure fluid of the slide body pivot axis is in each case a different embodiment

fed from the housing, must take into account that of the control device.

Mobility of the slider body the supply via Fi g. 7 shows in section through the pivot axis and

parts that can move relative to each other are carried out, 55 the cylinder drum axis requires an adjustable axial piston

On the one hand, a lot of manufacturing effort, due to the other machine, in which the control pressure fluid dem

on the other hand, there is the risk of leakage losses, which are fed to at least the cradle body through the hold-down device

Can affect control speed. To this will.

To avoid the disadvantage, it is advantageous if, according to FIG. 8 shows in section a hydraulic control unit

a further development of the invention the slide 60 direction for the position of a swivel body.

body the hydraulic fluid from the swivel body in Fig. 1 is the flange 1 of the lid 7 on one in the

is fed. The slide body can then not be shown drawing machine housing

be mounted directly on or in a lever or can be placed on an axial piston machine. This ma-

can be adjustable via a cam. Is the machine housing is in a no longer shown

For example, the swivel body of the cradle body is mounted in the cylindrical swivel body 2, des-

ner swash plate machine, in which the cradle body sen flat surface 63 represents the swash plate, against

The pistons, which are no longer shown, are held by a hold-down in the cradle bearing.

th is, with the hold-down in the pivot In the cover 7, the pivot shaft 3 is eelaeert the

7 8

at its machine-side end firmly with the cam swivel body 2 under the force of the spring 39 in his

disk 4 is connected. Press storage in the housing. The cylinder drum

The swivel body 2 is around the in F i g. 1 perpendicular 33 is connected to the shaft 40 in a rotationally fixed manner. The pivot axis 5 pivot housing 37, which is in relation to the plane of the drawing, accommodates the control device, whose bar. The 5 slide body 46 is also pivotable about this pivot axis 5 with the pivot body 2 cooperating with lever arm-like slide body 6 in the housing 7, at the second end of which the roller is in turn supported. For the purpose of storage, the slide body 24 is fastened, with the torsion spring 45 being provided with a bearing pin 8 on this end by 6, which has an effect. The slide body 46 has a longitudinal bore 9 on a pin 44, which is pivotably mounted at its free end. In the slide body 46 one is closed by a plug 10. In the housing 7 io transverse bore 43 is provided, in which two one below the other an annular channel 11 is formed, which are displaceably mounted with a pressure medium supply with a drawing not shown in the same sealing body 42 and 41, which is connected by the pressure of the pressure medium in the lever arm-like connection Part of the being pushed apart and the sealing body 41 slider body 6 is formed a bore 12 which rests against the flat surface 47 of the swivel body 2 at one end by a plug 13 and is closed with the two bores 51 and 52 in this. At its other end, the bore 12 cooperates, while the sealing body 41 is slidable against a blind bore 14 in which a sealing body 15 is mounted in a sealing manner under the action of a spring 16 under a control surface 48 in the housing cover 37. lies. In the housing cover 37 a bore 49 is provided. The sealing body 15 has a control opening 17 which is connected to a pressure medium connection, which can no longer be seen in the drawing when the slide body 6 is pivoted, and in each case via the pivot body 2 with one of the drilling a transverse bore 50 opens, which comes into connection with the bore in stanchions 18 or 19 which cooperates with the sealing body 41,
the other of the bores 18 or 19 is supported by one of the swivel body 2 is released in a bearing body 53 edges 20 or 21 of the slide body 15. On the swivel body 2 two swivel fluids are provided that through the released bore pressure medium in 25 gel 54, each with a seal 55. Can flow between the interior of the housing cover 7. In the normal position shown on the end faces 56, the circumferential wall of the pivot, the body 2, the machine housing 32 and the pivot sealing body 15 with its end face 22 cover the openings 54, the two pressure spaces 57 and 58 are formed 18 and 19 completely . Thus, through the bore 18 and det, of which the pressure chamber 57 is connected to the bore 51 19, the opening 17 and the edges 20 and 21, an edge control 30 and the pressure chamber 58 connected to the bore 52 are given. The sealing body 15 is through

a flat surface 15a in this way in the slide body 6. Two pins 60 are arranged on the swivel body 2.

leads that he cannot twist. net against the

The slide body 6 is able to rest against the sealing body of its slide body 46 and thereby the 15 opposite end with a pin 23 ver 35 pivot body 2 can also be adjusted purely mechanically, see, on which a roller 24 is mounted in the The embodiment according to FIG. 5 differs The slot 25 of the cam disk 4 engages through the Fe-itself of the embodiment according to FIG. 4 only there 26, which is attached to an extension 27 of the slide body 6 by that the slide body does not have a backdrop attacks, the roller 24 is always in contact with the control lever with the arbitrarily actuatable transmitter lever 28 of the slot 25 held. The opposite side of the 40 bound but in the embodiment according to Slot 25 is used to take the roller 24 for the F i g. 5 is the slide body 66 rotatably with the Case that once clamping forces or inertial forces are connected to pivot shaft 65, with the other hand the ßer should be than the force of the spring 26. Encoder rocker arm 28 is connected The two

The pivot shaft 3 is with the arbitrary actuatable sealing body 41 and 42 are additionally by a

Ren encoder lever 28 firmly connected by screw 29 45 spring 64 pushed apart. On the opposite

the. The lower end of the slide body 66 is a bolt 630

Bores 29 are arranged in the cover 7 through which a bolt 62 is arranged and in the housing 67.

screws can be inserted through with play, arranges the free ends of the torsion spring 68 are against

around the housing cover 7 on the machine housing to the bolts 630 and 62, so that they the encoder body 66

attach. In order to return the position of the housing cover 7 to that in 50 to its normal position,

the drawing is no longer shown machine- The embodiment according to FIG. 6 differs

To be able to precisely define the housing opposite, two differ from the embodiment according to FIG. 4 by

Adjusting eccentric provided, with the pins 30 in the measure that the supply of the pressure medium in an analogous manner

machine housing are mounted and the eccentric bolt 31 is carried out as in the embodiment according to FIG. 2,

fit in bores of the cover 7 and from the outside 55, however, in this case the pin 70 is fixed to the housing

are adjustable. The resulting displaceable is and the longitudinal bore 72 in the pin 70 with the

speed of the cover 7 with respect to the machine housing pressure medium supply connection 71 is in connection

allows adjustment of the pivot position of the slider body 76 is rotatable on the pin

Swivel body Z This displaceability is less than 70.

as the play of the screws in the bores 29. 60 pers 76 on the pin 70 no tilting forces come,

In the case of the FIGS. The embodiment shown in FIGS. 3 and 4 is the sealing body 42 via the spring 74 and the ball

In the embodiment, completely identical parts with the same bearing 75 are supported against a surface 96 on the housing 77

Marks as shown in FIGS. 1 and Z In the through the through transverse hole 78 are through

Machine housing 32, the cylinder drum 33, the pressure medium fluid pressure at the mouth is not charged.

gert, which transmit with their end face against a control plate 34 65 ne transverse forces on the slide body 76,

rests, which in turn rests against a bottom part 35 In the pin 70 has an annular groove 79 which is through a

This support pin 36 is attached, which is connected to the counter bore with the longitudinal bore 71 and

body 38 are supported on the swivel body 2 in order to connect with the bore 80 in the slide body 76

9 10

dung stands. The bearing part 81 of the journal 70 is piston 124, 125, 126 a force acts independently

with respect to the part of it inserted into the housing 77, in which direction the displacement takes place,

eccentric, so that by turning the bearing journal on the cradle body 121 a control surface body

70 the central position of the swivel body 2 is set by 134 screwed on by two screws 135. Of the

can. 5 control surface body 134 has a finely machined

In the embodiment according to FIG. 7 is the control surface 136 attached to this body 134 more easily The cradle body 85 can be machined to the same extent as on the cradle body 121 via a roller bearing 86.

Machine housing 87 stored in the counter body 121 via the rolling bearing three bores 137, 138 and 139

88 the machine shaft 89 is also mounted, the other is provided. Of these, the bore 137 is about one

on the other hand via the bearing 90 in the control floor cover 91 io connection hole 140 with one in the drawing

is stored, in which the auxiliary pump 92 is also arranged, more illustrated hydraulic fluid supply channel

is. The cylinder drum 93 is mounted and connected on the shaft 89, while the channel 138 is

from which the pistons 94 exit, each of which is located by means of a ring 141 with a no longer shown in the drawing.

Slide shoe 95 on the swash plate surface 97 supported actuating pressure space or actuating cylinder on the cradle

zen, which is formed on the cradle body 85 through the 15 body 121 is connected and correspondingly the channel

Retaining plate 98, the sliding shoes 95 are in system 139 via a transverse bore 142 with the second adjusting

held with the swash plate surface 97. The duct is connected to one of the pressure spaces or actuating cylinders

Side is the machine housing 87 through a cover 137 continues in a channel 143. The channel 138

99 closed and on the other side by one continues in a channel 144 and the channel 139

Lid 100 in which the adjusting pivot pin 101 is mounted 20 continues in a channel 145 The three channels 143,

is, which by means of an operating lever 102 arbitrarily 144 and 145 open into the control surface 136 on which the

Slides over a linkage by hand or through a control slide body 146, which is in a bore 147 of the

direction is pivotable. The adjusting pivot pin of the piston center part 126 is slidably supported

101 is firmly connected to a lever 103 which has a spring 148 against the control surface 136

Has a bore in which the slide body 104 is pressed along 25.

is displaceably mounted, which is located on the flat control surface.

Surface 105 of the cradle 85 slides as seen in the base surface. In the position shown in the drawing

of the slide body 104 is an elongated breakthrough, the recess 149 exactly covers the mouth of the

chung 106 arranged, the bore 143 to an interior 107 from. However, if the actuating piston 124,125,

leads, which is sealed in the drawing by 30 126 and thus the slide body 146 in the

a sphere 108 is completed, which is displaced against the drawing on the left, so connects the recess

Housing cover 100 is supported, the channels 143 and 145 between the slide opening 149, while the edge

body 104 and ball 108 a compression spring 109 in the slide body 146 the mouth of the channel 144

tensioned is released into the housing.

On the cradle body there is a support joint body 110 which is connected to the pressure chamber pressure fluid via a bore 142

screwed the supplied with a hemispherical surface 111, while from the with the transverse bore 141

A hold-down column 112 is supported against this, connected pressure chamber pressure fluid is drained

which has a longitudinal through-hole 113 and is in one, so that the cradle body 121 as a result of this impairment

Bore 114 of the housing 87 is mounted via a flow of the pressure chambers of the position of the slide body Cross bore 115 with a not 40 146 in the drawing follows until the recess 149 is the mouth again

The control pressure connection shown is connected to the bore 143 and the foot of the slide valve

The bore 113 is in communication with the bore body 146 again the mouths of the bores 144

116, which in turn connects with the bore 117 and terminates 145 as shown in the drawing

stands that leads to bore 118, which is in the area 105. An analogous process results when

In addition to the bore 118 in front of and behind the 45, the adjusting cap 124,125,126 follows in the drawing

Another hole is provided for each drawing level, shifted to the right In this case, the recess connects

the to the two in the drawing no longer depicted 149 the channel 143 with the channel 144 and the foot

Provided storage spaces on the cradle body 85 or on the slide body 146 is the mouth of the channel

sem attacking, no longer shown in the drawing. 145 freely into the housing until the cradle body 121 of the

set actuating cylinders lead. 50 position of the actuating piston 124,125,126 followed

In the embodiment according to FIG. 8 is the dimension of the interior 150 of the bore 147 or the slide

Machine housing denoted by 120 in which the cradle body 146 is through the opening 151 with the

body 121 is mounted to the machine housing 120 recess 149 connected by a further

a cover 122 is screwed onto which the hydraulic opening 152 is the interior 150 with a

Adjusting device 123 is attached. This has a 55 pressure compensation cushion space 153 connected so that Cylinder in which an adjusting cylinder can be displaced, which does not exert any transverse force due to the pressure in the interior 150

the two piston parts 124 and 125 and the connecting of the actuating piston 126, 124, 125 is exercised.

tion part 126 has one side of the actuating cylinder

is closed by a cover 127 and 7 sheets of drawings

Bore 128 connected to a steep pressure connection, 60

The other side of the actuating cylinder is closed off by a cover 129 and by a transverse bore 130 connected to a further control pressure connection a Between the piston part 125 and the cover 129 is a

Spring 131 is inserted in this way by means of spring plates 132 and 133 tensions that in a predetermined central position of the piston 124, 125, 126, the spring 131 is no force on the Piston has an effect, however, every time the

Claims (21)

Patent claims: 1. Control device with an arbitrarily adjustable Transmitter element for the swivel position of a swivel body, which is in an abutment is pivotably mounted and on one side the swash plate of an adjustable swash plate axial piston machine and one of which is rotationally symmetrical to the pivot axis, preferably has a plane surface perpendicular to the pivot axis, determining pivot device with two hydraulic pressure chambers in which the pressure of a pressure medium acts on actuating piston surfaces and which the pressure medium is fed by means of a square sequencer, one with the encoder member has connected slide body, - which contains a supply channel for the pressure medium and pivotable about an axis parallel to or coaxial to the pivot axis of the pivot body is stored, characterized in that the sequence control counter surface in which the controlled, with the pressure chambers (57, 58) connected orifices (18, 19) of the square sequencer (17, 18, 19, 42, 52) and against which the slide body (6,46,66) rests with a sliding seal, directly the rotationally symmetrical surface (47) of the swivel body (2) and that the connecting channels arranged between the square sequencer and the pressure chambers (57, 58) (as known per se) within the swivel body (2) are. 2. Control device according to claim 1, characterized in that the slide body (6, 46, 66, 76) in a housing (7, 37, 67,77) with a pivot pin (8,44,65,70) is and that between the slide body (6,46, 66, 76) and the rotationally symmetrical surface (47) a resilient seal (15,42) is arranged. 3. Control device according to claim 2, characterized in that the feed channel (80) has a Bore (72) in the pivot pin (70) is connected to the hydraulic fluid supply connection. 4. Control device according to claim 1, characterized in that the slide body (66) in one the swivel body and / or the control device enclosing the housing (67) is mounted and that in the housing (67) a pressure fluid channel is arranged, which in the the slide body (66) opposite area has a mouth and that the slide body (66) also against the housing (67) rests in a sliding manner. 5. Control device according to claim thereby characterized in that between the slide body (66) and the rotationally symmetrical surface (47) on the one hand and between the slide body (66) and the housing (67) on the other hand, a flexible one Seal (41,42) is arranged 6. Control device according to claim 1, characterized in that the slide body (76) in one the swivel body and / or the control device enclosing the housing (77) is mounted and that the slide body (76) via a flexible guide (75) and / or the seal (42) is supported against the housing (77) via a flexible guide (75). 7. Control device according to one of the preceding claims, characterized in that the Slider body (6, 46, 76) connected to the transmitter member (28) by a link guide (4,25,24) is 8. Control device according to claim 7, characterized in that between the transmitter member (28) and a resilient force connection is provided to the slide body 9. Control device according to claim 7, characterized in that the slide body (6) with a Spring (26) is connected, which holds the slide body (6) in contact with the link (25,4) 10. Control device according to claim 1, characterized in that the housing (7) in which the Control device is mounted, opposite the housing in which the swivel body (2) is mounted in adjustable position can be attached 11. Control device according to claim 1, characterized in that the bearing part of the encoder member can be fastened in an adjustable position in the housing 12 Control device according to claim 1, characterized in that the bearing part of the slide body (66) mounted on an eccentric, adjustable pin (70, 81) and via this in the housing (77) is 13. Control device according to claim 1, characterized in that the pressure chambers (57, 58) according to the swivel piston principle are arranged on the circumference of the swivel body (2). 14. Control device according to claim 1, characterized in that the pressure chambers in two cylinders are arranged, each of which on one side of the pivot axis (5) of the pivot body (2) is arranged wherein an actuating piston is displaceable in each of these two cylinders, one of the Contains supply of the pressure medium to the pressure chamber serving channel 15. Control device according to claim 1, characterized in that the feed channel (118, 137) for Hydraulic fluid to the slide body (104, 146) is arranged in the swivel body (85, 121). 16. Control device according to claim 15 for the cradle body of a swivel disk machine, characterized characterized in that a pressure fluid channel (113) for the supply of pressure fluid to the The feed channel (118) is arranged in the swivel body (cradle body (85)) in a pressing device (110, 112) is 17. Control device according to claim 16, characterized characterized in that the pressing device (110, 112) in the pivot axis of the pivot body (85) is articulated with this 18. Control device according to claim 17, characterized characterized in that the pressing device (110, 112) with a device generating a pressing force (mechanical spring or surface on which hydraulic pressure is exerted) is provided. 19. Control device according to claim 1 or preferably claim 15, characterized in that that the slide body (146) is connected to a hydraulically adjustable actuating piston (124, 125, 126) is. 20. Control device according to claim 19, characterized in that the slide body (146) in the adjusting body (124,125,126) perpendicular to the slide surface is slidably mounted and is provided with a pressing device (spring (148)). 21. Control device according to claim 19, characterized 3 4 characterized in that the actuating piston (124,125,126) has a swivel vane housing disc, which is in the axial provided with a pressure relief panel (153) extends in the same width as the direction Swivel vane itself The pressure chambers on both sides each of a swivel vane are each separated by a plate 5 closed. For the purpose of control is in one each furthest outward terminating The invention relates to a Steuereinricntung with the plate part, a transmitter lever on a pin shaft gela features from the preamble of the main claim, which extends through the plate and thus inter alia with an arbitrarily adjustable transmitter member, which is a control lever on the second side of the plate wherein the control device for the pivot position io is mounted, which at its pivotable end has a pivoting device which determines a pivoting body axially parallel bore, in which the device is used on both sides and the pivoting body is guided with one of its flexible sealing elements, the rotationally symmetrical on the pivoting axis , preferably the respective outer side lying sealing element against perpendicular to the pivot axis arranged, flat surface abuts the said closing plate and the other is provided before and wherein the pivoting device 15 has sealing element against an intermediate plate with control two hydraulic pressure chambers, in those bohruisgen is applied, which in turn acts against a body pressure on the actuating piston surfaces and which is applied with a cylindrical surface, which pivots together with the pressure medium by means of a square sequencer to the cradle body (FR patent application is performed. This device is provided 75 22 597, publication 22 80 806). This arrangement for controlling the swivel position of the swash plate 20 voltage is not only due to the large number of components that swivel body which bears an axial piston machine. dig, but also extends in particular through the two pressure chambers can be of the same size or designed as a difference between the cradle body and control lever additional pressure chambers. Correspondingly, the arranged further body is also very far in the axial direction, the transfer to a two-edge control is possible, so requires a large construction effort,
borrowed. The arbitrarily adjustable transmitter element can also be adjusted laterally in the direction of the pivot axis. in addition to the swashplate body, a swivel vane So far, sequence control devices are known, arranged at drive with the swash plate body both of which the actuating piston and the control piston are connected to a cylindrical body on the outside executes a rectilinear movement. This rectilinear 30 attached two radially extending swivel vanes Movement of the actuating piston must then be through intermediate ·. The pressure chambers are arranged in a coaxially members transferred to the body to be pivoted th, hollow cylindrical, housing-fixed cylinder formed will. Since mostly the arbitrarily given placement area is arranged in which two separating surfaces fixed to the housing function are given in the form of a swivel angle path. In a central coaxial bore of the with the in these cases, a cylindrical body connected to a swashplate body must also be used on the input side. Intermediate kinematics can be provided (DE-PS 14 53 513). pers a control pin protrudes into it, which with an arbitrary Such actuating devices require a relatively large amount of construction borrowed actuatable lever is provided. Both in that space and because of the transmission of the straight control pin as well as in the housing cover as well as in Movement required for the swivel movement of the cylindrical connected to the swash plate body Intermediate links also require a lot of construction work, with 40 drical bodies also being arranged for the bores Play can occur in these intermediate links, which serve to pressurize fluid into the pressure chambers on both sides for example in the case of drives for the swivel part of the two swivel blades, whereby the an adjustable axial piston machine avoided fertilize the bores in the control pin and in the must become. cylindrical body a sequential control edge Although a sequence control is already known, form 45 control (US-PS 33 32 323). Such systems in which the actuating piston performs a rectilinear movement with controls arranged in the cylindrical surfaces, but the actual control organ allows rotating bore mouths as a result of inevitably conditions coaxial to the axis of the swivel body from a small distance from the swivel axis only unguided. The encoder member must have a rotatable precise controls and always lead to considerable Part and the swivel body with a second loss of 50 leakage, as with consideration of the requirement that be connected rotatable part, these two ver the control pin in the hole assigned to it rotatable parts can be moved coaxially to each other in a housing with relatively little force, relatively large bearings are (DE-AS 16 53 661). The disadvantages of the good manufacturing tolerances required are those that are still undersigned Device according to DE-PS 14 53 513 will also have to take into account different thermal expansions with this facility not eliminated probably come 55 sen. Such controls inevitably make it extra Disadvantages required by larger requirements that both in the control pin as well as in the Installation space and construction costs for more parts are added. Body in which the hole assigned to it is located A swash plate machine is also already ordered, channels for the liquid flow are arranged. in which the swash plates are on a cradle grain. The invention is based on the object of providing a control device in a hollow cylindrical surface that is supported with the smallest construction of a housing body that is just as extensive and space without intermediaries like the cradle body. Reliable control ensures reliable control on each side of the cradle,
A swivel vane drive is arranged in the body. Da-side of the cradle is arranged in such a way that it extends up to through a sequence control (follow-up control) the side of the housing body extends At both ends with a sliding slide, so in the manner of a sliding partition in the radial direction of the swivel vane is against override, achieved, at the one to be adjusted