JP5180970B2 - Axial piston engine with housing gradually expanding inside - Google Patents

Abstract

The machine (1) has a housing (2) for enclosing an interior space (3) with two transverse walls (18a, 18b) and a periphery wall (2c). Swash-plates (4) supported longitudinally adjacent to a cylinder drum (5) are flexibly supported at pistons (9). The plates are adjustably supported back and forth along extending piston bores (6) in the drum. The periphery wall has a radial elevation formed in a longitudinal direction of the housing and formed by two u-shaped periphery wall sections. The sections limit a radially extended interior section.

Description

  The present invention relates to an axial piston engine according to the preceding stage of claim 1 or claim 6.

This type of axial piston engine is common in the prior art. Also, different types of engines, such as so-called swash plate engines and tilt axis engines, are all axial piston engines with variable or fixed processing capacity.
For example, Patent Document 1 describes a variable processing capacity swash plate type axial piston engine. Patent Document 2 describes, for example, an inclined axis type axial piston engine having a variable or fixed processing capacity.

European published patent EP 0450 623 A1 German published patent DE 100 30 147 A1

These engine types are common to each other, and in a cross section, a circular cylinder drum is disposed inside the housing, and the peripheral wall of the housing surrounds the cylinder block with an appropriate radial gap. In the functional operation of an axial piston engine, the interior is at least partially filled with a hydraulic medium, in particular hydraulic oil, at a low pressure.
In an attempt to save space and material, attempts have been made to make the housing cross-sectional size as small as possible. For this reason, the peripheral wall of the housing surrounds the cylinder drum with a sufficiently small radial gap. In general, since the cross-sectional shape of the cylinder drum is circular, the conventional housing has a substantially circular or hollow cylindrical cross-sectional shape. In the variable processing capacity type axial piston engine, an adjusting device which is elongated and extends, for example, in the axial direction and communicates with the inner wall in the wall thickness chamber of the housing.

  The basic object of the invention is to improve an axial piston engine of the type indicated at the outset in terms of the spatially useful shape of the housing. Furthermore, it is at least spatially useful to achieve a hydraulic coupling point between the axial piston engine and one or both of the hydraulic circuit and the leakage part. Yet another object is to achieve a spatially useful arrangement in the components of the adjusting device for changing the processing capacity of the axial piston engine.

The object of the invention is achieved by the features of claim 1 or claim 6. In addition, the dependent claims have a configuration that is usefully developed.
The present invention is based on the discovery that radially expanding the housing of an axial piston engine can propose a spatially useful arrangement and a choice of useful structures on both the inside and outside.
According to claim 1, the peripheral wall has at least one radial protrusion, which extends in the length direction of the drive shaft and is arranged at an angle or in a U-shape. It is formed by two peripheral walls, and is arranged so as to define an inner radial boundary. Further, a hydraulic coupling point having a coupling opening is arranged at the top of the projecting portion in order to supply, discharge or exhaust the static pressure medium. On the other hand, this creates a radially expanded internal structure, which is advantageous for the placement of additional parts of the axial piston engine, for example the parts of the adjusting device for reducing or increasing the processing capacity of the axial piston engine. These parts are adjustment parts for adjusting the processing capacity and stop elements for limiting the adjustment movement amount.
In addition or separately, the peripheral wall that defines the expansion boundary of the radially extending internal structure is coupled to a fixture, for example a hydraulic path, for fixing the axial piston engine in the top region of the radial protrusion It is proposed to arrange a fixture that directly or indirectly secures the fixture. One advantage of such an arrangement is that, for example, the top of the radial protrusion has side walls on both sides that slope downward, so that there is a wide freedom that is spatially useful for assembly and disassembly of each fixture. There is a space.
For fittings in the form of line couplings, the radially expanded internal structure has the advantage that it is fluidly useful since there is a large free internal space in the outflow opening area.
The axial piston engine of the present invention according to claim 5 is provided with a radial protrusion having an angle or a U-shaped cross section around the lateral wall of the housing. A hydraulic coupling point having a coupling opening is arranged at the top of the radial protrusion. Similar to the development of the invention described above, this variant of the invention is also located laterally away from the area surrounding the housing. And since it is surrounded with a gap, it is guaranteed not only a spatially more useful arrangement, but also easy assembly and disassembly of the hydraulic line. This development of the invention not only allows the hydraulic lines to be arranged radially, but also makes it possible to bend an angular structure or a square, for example an acute angle of 45 °, for example.
Within the scope of the present invention, the plurality of protrusions can be arranged diametrically opposite each other, arranged on one side of the housing, or arranged apart in the peripheral direction. This allows the housing to have a diagonal, semi-circular or substantially quadrangular cross section, as well as the same number of radially extending internal structures.
In these two cases, when the protrusions according to the present invention are spaced apart in the peripheral direction, an adjusting device for adjusting and setting the processing capacity of the axial piston engine and a maximum value setting, for example, a device for limiting the rotation of the swash plate It can be realized in a spatially useful manner.
The useful development of the present invention further improves the spatially useful structure of the housing and accessories attached thereto, and further improves the attachment of the axial piston engine to the transport device, thereby axially located within the housing. Improved assembly and disassembly of piston engine parts.

According to the present invention, the axial piston engine can be improved from the viewpoint of the spatially useful shape of the housing.
Furthermore, the hydraulic coupling point between the axial piston engine and one or both of the hydraulic circuit and the leakage portion can be achieved at least spatially usefully.
Also, a spatially useful arrangement can be realized in the parts of the adjusting device for changing the processing capacity of the axial piston engine.

1 is a cross-sectional view schematically showing an axial piston engine according to the present invention. Partial perspective view of swash plate at minimum processing capacity position of axial piston engine Front perspective view of an axial piston engine according to the present invention. Front view of the rear bowl-shaped housing of the axial piston engine in FIG. 1 or FIG.

The hydrostatic axial piston engine according to the first embodiment of the present invention has a projecting portion whose peripheral wall bulges in at least one radial direction, and the projecting portion is configured to extend in the length direction of the housing, and These are formed by two peripheral wall portions that are arranged in a square shape or a U shape and delimit the radially enlarged interior.
In the second embodiment of the present invention, in the static pressure axial piston engine according to the first embodiment, the protrusion extends over the length of the room.
According to a third embodiment of the present invention, in the hydrostatic axial piston engine according to the first or second embodiment, two protrusions are arranged on opposite sides, or, for example, three or four plural Projecting portions are spaced apart from each other in the peripheral direction.
According to a fourth embodiment of the present invention, in the static pressure axial piston engine according to the first to third embodiments, the cylinder drum is disposed between the cylinder drum and the side wall with the inner side away from the swash plate. Supported by the plate, the at least one protrusion extends lengthwise across the side wall or both side walls.
In the fifth embodiment of the present invention, in the hydrostatic axial piston engine according to the first to fourth embodiments, a hydraulic coupling point with a coupling opening is arranged at the top of the projecting portion.
In the hydrostatic axial piston engine according to the sixth embodiment of the present invention, a protrusion having a square or U-shaped cross section is disposed around the side wall, and a hydraulic coupling point with a coupling opening is disposed in the top region. It is what has been.
According to a seventh embodiment of the present invention, in the hydrostatic axial piston engine according to the sixth embodiment, the protrusion extends at least partially along the peripheral wall or other side wall in the length direction. .
According to an eighth embodiment of the present invention, in the static pressure axial piston engine according to the fifth to seventh embodiments, a fixture that is a part of a fixing device that fixes a hydraulic line or a coupling member to a hydraulic coupling point. It is what is arranged.
The ninth embodiment of the present invention is a static pressure axial piston engine according to the eighth embodiment, wherein at least one preferably flat seating surface is provided at the hydraulic coupling point.
According to a tenth embodiment of the present invention, in the static pressure axial piston engine according to the eighth or ninth embodiment, for example, the second protrusion in which the fixture extends upward from the first protrusion, It is arranged only in the connection point region.
In the eleventh embodiment of the present invention, in the static pressure axial piston engine according to the first to tenth embodiments, the processing capacity of the axial piston engine is increased or decreased by an adjusting device having an adjusting mechanism, and preferably, the swash plate However, as a part of the adjusting device, the swivel joint is mounted around the swivel shaft so as to be pivotable.
According to a twelfth embodiment of the present invention, in the static pressure axial piston engine according to the eleventh embodiment, the adjusting mechanism and / or the swivel limiting device are designed to be elongated, and have an enlarged interior or an enlarged interior. In one of these, the axial piston engine extends laterally away from the longitudinal swivel shaft.
According to a thirteenth embodiment of the present invention, in the hydrostatic axial piston engine according to the first to twelfth embodiments, one or two protrusions having a mutually oriented mutual space are arranged with respect to the swivel shaft. They are spaced apart in the lateral direction.
In a fourteenth embodiment of the present invention, in the hydrostatic axial piston engine according to the twelfth or thirteenth embodiment, two laterally projecting radial protrusions having an enlarged interior are provided on the swivel shaft. Arranged on both sides, preferably the adjusting mechanism and the swivel limiting device are arranged on each side of the swivel shaft, in particular diagonally opposite each other.
In the fifteenth embodiment of the present invention, in the static pressure axial piston engine according to the fourth embodiment, the side wall is formed by the base wall of the bowl-shaped housing.
The sixteenth embodiment of the present invention is a static pressure axial piston engine according to the first to fifteenth embodiments, in which the housing is sectioned by four side walls in the region of at least one protrusion, particularly A square or rectangular shape, preferably having a cross-sectional shape with rounded corners.

In the following, useful developments of the present invention will be described in detail with preferred embodiments and drawings.
FIG. 1 shows a typical configuration of an axial piston engine, and an overall configuration of the axial piston engine is denoted by reference numeral 1. The axial piston engine 1 has a housing 2, and a swash plate 4 and a cylinder drum 5 are disposed in the chamber 3 of the housing 2 so as to be close to each other in the axial direction. A piston hole 6 extending along the periphery of the cylinder drum 5 having a circular cross-sectional shape is arranged. The piston hole 6 extends, for example, parallel to the center line 7 of the cylinder block 5 and the axial piston engine 1, and is inclined. Opened on the side of the plate 4. A piston 9, preferably having a cylindrical cross section, is fitted in the piston hole 6 so as to be movable in the length direction, and the piston head allows the range of the working chamber 11 in the piston hole 6 in the direction of the swash plate 4. It has established. The other end of the piston 9 faces the swash plate 4, and the other end of the piston 9 is on the opposed inclined surface 4 a of the swash plate 4, and a slide 13 provided on the opposed inclined surface 4 a of the swash plate 4. Thus, it is supported by the joint 12 in the form of a ball joint having a ball head and a ball socket.

The end of the cylinder drum 5 leans against the cam plate 14 away from the swash plate 4. The cam plate 14 has at least two control openings 15a, 15b arranged diametrically opposite each other with respect to the center line 7, which extend through an adjacent housing side wall 18a on which the cam plate 14 is held. The vertical direction opening part of the track 16 and the discharge track 17 is formed. The cylinder drum 5 is connected to a drive shaft 19 that is rotatably mounted in the housing 2, and the rotation shaft 21 extends coaxially with the center line 7 of the cylinder drum 5.
In this embodiment, the housing 2 has the shape of a bowl-shaped housing portion 2a having a housing base 2b and a peripheral wall 2c, and a lid-type flange 2d positioned with respect to the free end of the peripheral wall 2c is a screw using a screw 22a. Connected by a bond 22 forms a front side wall 18b of the housing.

The drive shaft 19 passes through the cylinder drum 5 while being rotationally fixed in the bearing hole 5a, and is rotatably mounted on the housing base 2b and the front side wall 18b and / or the flange 2d by appropriate bearings 25 and 25a. The drive shaft 19 passes through the front side wall 18b and / or the flange 2d in the through hole 23 in the axial direction. The through hole 23 is sealed with an annular seal 24, and the drive pin 19 a protrudes from the housing 2 in the axial direction. The bowl-shaped housing part 2a and the flange 2d are adjacent to each other at the plane seating surface 2f, and form a separate coupling 26 to be sealed by an annular seal (not shown). In order to position the bowl-shaped housing part 2a and the flange 2d coaxially with each other, the centering device 27 protrudes from, for example, the associated seating surface 2f and fits in a matching recess in the opposite seating surface 2f or in the chamber 3 It is preferable to provide a projection shape fitted into the inner end.
The swash plate 4 is provided with a through hole 28 coaxially, for example, and the drive shaft 19 passes therethrough with play in the radial direction. The swash plate 4 is preferably positively supported forward in the axial direction, that is, in the direction of the drive pin 19a, and preferably radially inward of the flange 2d.
The axial piston engine 1 is an axial piston engine having a fixed or variable processing capacity. In the latter case, the adjusting device 31 has a well-known different structure, and the processing capacity is increased or decreased within the range indicated by the left and right arrows in FIG.

In this embodiment, the swash plate 4 can be adjusted in both directions around the rotating shaft 21 and / or the swivel shaft 32a running transversely to the longitudinal center line as a swivel joint by the adjusting mechanism 31a, and It can be locked at each adjustment position.
The swivel joint 32 is formed of a so-called swivel base. This swivel base is continuous in one lateral direction with the concave joint surfaces 32b arranged on both sides of the drive shaft 19 either in one lateral direction or in two arcs inside the flange 2d. Or it has the convex surface 32c arrange | positioned at either side of the through-hole 28 of the swash plate 4 by either of two circular arc shape. In this embodiment, the swivel joint 32 is a sliding bearing. However, if it is formed by a rolling bearing or a needle bearing, a small rotating body disposed between the joint surfaces 32b and 32c can be realized.

The peripheral wall 2c of the housing 2 has a radial protrusion 34a. The radial protrusion 34a is a roof shape having a square or U-shaped cross section, and the top 34d extends in the length direction of the tubular peripheral wall 2c. The radially projecting portion 34a is formed by arranging two peripheral wall portions 2e in a square shape or a U-shape, projecting like a tangential direction or a split line with respect to the hollow cylinder peripheral wall, and connected to each other at a top portion 34d of the radially projecting portion 34a. Yes. In this embodiment, the radial protrusion 34a extends over the axial length L1 of the peripheral wall 2c, and the radial protrusion 34b extends over the thickness L2 of the rear side wall 18a of the bowl-shaped housing 2a. The flange 2d also preferably has a protrusion 34c that substantially matches the protrusion 34a in the axial direction and extends over the thickness L3 of the front side wall 18b. Therefore, it can be defined that the projecting portion 34 extends over the entire length L of the housing 2 and is composed of projecting portions 34 a, 34 b, 34 c that are integrally formed in the axial direction. The protrusions 34a and 34b are also integrally connected to each other in the axial direction.
Since the protruding portion 34b around the rear side wall 18a and / or the housing base 2b does not delimit the chamber 3 of the housing 2, no internal expansion is performed in this embodiment. In the present embodiment, the protruding portion 34b is delimited by the side surface portion 34e. The side surface portions 34e are arranged in a square shape or a U shape, and the protruding portions 34b are disposed therebetween. The protrusion 34c is similarly arranged around the flange 2d.
The protruding portion 34a delimits the radially expanded interior 36 together with the peripheral wall portion 2e whose thickness is substantially equal, for example. This radially enlarged interior 36 is suitable for a protective arrangement of structures and components that can be selected to make the axial piston engine 1 not yet described in detail spatially useful.

The peripheral wall 2c has two protrusions 34a arranged diagonally to each other or a plurality of, for example, three or four protrusions 34a arranged at a distance of, for example, about 90 ° in the circumferential direction. When the four protrusions 34a are distributed along the periphery, the peripheral wall 2c has a substantially square or rectangular cross-sectional shape. In this case, as shown in FIGS. 3 and 4, the corners are rounded, and the side wall 2g extending therebetween is bent slightly outward when viewed in a sectional view. In this case, the side wall 2g is formed by two circumferential wall portions 2e which are separated from each other in the protruding portions 34a adjacent to each other in the circumferential direction.
In this case, it is preferable that the flange 2d extending between the peripheral wall portion 34e of the housing base 2b and the projecting portions 34b, 34c is matched in shape and size to the side wall portion 2g of the peripheral wall 2c.
For example, an adjustment mechanism 31a that forms part of the adjustment device 31 is arranged in the interior 36, and appears obliquely and / or diagonally with respect to the cylinder drum 5 in appearance or along the swivel axis 33 in a spatially useful manner. Can be small.
In order to improve the mechanical connection between the adjusting mechanism 31a and the swash plate 4, the swash plate 4 has at least one radial protrusion 37 in an axially symmetrical manner in the associated interior 36, which is shown in FIG. The adjusting mechanism 31a shown as a double-sided arrow that points to acts on the protrusion 37 in the sense that it exerts pressure and / or tension.
The swash plate 4 is preferably provided with a protrusion 37 in each of the axially symmetric inner portions 36. When there are four protrusions 37, the swash plate 4 is square or rectangular and has a corner portion of the swash plate 4. Is rounded.

The adjusting device 31 has two adjusting mechanisms 31 a 1 and 31 a 2, which are radially spaced on both sides of the swivel shaft 33, that is, arranged in a direction or oblique to each other with respect to the swivel shaft 33. Acts in the opposite direction to the axial direction. Details are shown in FIG. Such adjustment mechanisms 31a1 and 31a2 acting in opposite directions are formed by, for example, a hydraulic swing-out piston and a hydraulic swing-back piston. The hydraulic swing-out piston and the hydraulic swing-back piston are configured to act in the axial direction opposite to the swash plate 4, but drive one of the two pistons acting in the same direction in the axial direction. It is good also as composition to do.
A swivel limiting device 41 that limits the maximum and / or minimum swivel angle of the swash plate 4 is arranged in a spatially useful manner in at least one radially extending interior 36. 2 and 4 show two swivel limiting devices 41, a swivel limiting device 41 for a maximum swivel angle piston and a swivel limiting device 41 for a minimum swivel angle piston. At least one swivel limiting device 41 is formed by, for example, a stop screw 41a, and this stop screw 41a is screwed into a thread of an internal projection (not shown) of the peripheral wall 2c. The stop screw 41a is screwed in such a manner that, for example, a screwdriver is applied to the head of the stop screw 41a so as to move back and forth with respect to the swash plate 4 and / or the associated protrusion 37 while being spaced laterally or obliquely with respect to the swivel shaft 33. .

In order to facilitate access to at least one adjustable swivel limiter 41 or stop screw 41a, a stop screw 41a and / or a screw hole for receiving it is provided to allow external access to the swivel limiter 41 and / or screw head. It is preferable to extend obliquely to the outside of the peripheral wall 2c. This is illustrated in FIG. 3, where the swivel limiting device 41 located at the upper right has a stop screw 41a extending into a screw hole located obliquely upward and obliquely downward, thereby externally Can be accessed from. Similarly, the other swivel restriction device 41 or the stop screw 41a is also arranged so as to be accessible from the outside. Thus, at least one of the protrusions 34a, 34b, 34c and at least one of the adjusting mechanism 31a and / or the swivel limiting device 41 is positioned orthogonal to the longitudinal plane E1 illustrated in the axial direction including the swivel shaft 33. It arrange | positions between the longitudinal direction center planes E2.
Therefore, one or two swivel limiting devices 41 can be arranged on either side of the swivel shaft 33 or opposite to each other. In this case, as described in the swivel restricting device 41 arranged at the upper right, the other swivel restricting device 41 not shown in FIG. 1 is designed to be accessible from the outside. For example, the longitudinal surface E1 and / or the long It arrange | positions in a mirror surface position with respect to the vertical direction center plane E2.

At least one of the protrusions 34a, 34b is also spatially arranged in a hydraulic functional element such as at least one coupling point 38 having an opening for supplying, discharging or draining hydraulic medium, in particular hydraulic oil, for example. In a useful manner. In the region of the coupling openings 38a1, 38a2, there is provided a fixture 39a which is part of a fixing device 39 for fixing a coupling fitting or a coupling line, for example a supply and / or discharge line 16, 17 or a leakage line. .
In the embodiment, at least one top 34d of the protrusions 34a and 34b, that is, the longitudinal region L2 in which the rear side wall 18a and / or the housing base 2 is located and / or the longitudinal region L1 of the peripheral wall 2c. One or two coupling openings 38a1 and 38a2 are arranged in each other. The coupling openings 38a1 and 38a2 are formed by holes penetrating the peripheral wall 2c or the housing base 2 at the top 34d, and the coupling openings 38a1 and 38a2 and / or the center line 38b of the hole are the peripheral wall 2e and / or the side surface 34e. For example, ca. Obtuse angle W1 of 135 ° or ca. If there is a 45 ° accessory, the acute angle W2ca. It has an angle of 45 °.
Within the scope of the present invention, the hole forming the coupling opening 38a1 serves as an element which, according to the left side of FIG. 3, directly fixes the corresponding hydraulic line, for example to thread the needle. Therefore, the hole itself is a fixture 39 a of the fixing device 39.
In the present embodiment, the fixture 39a on the right side of FIG. 3 is disposed on the mounting surface 39b extending substantially perpendicular to the center line 38b and surrounding the coupling opening 38a2, and preferably on the mounting surface 39b opposite to each other. Two or more fixing holes 39c are shown, and are screwed to a hydraulic line placed on the mounting surface 39b by screw fixing to the peripheral wall 2c with screws (not shown).
The mounting surface 39b and / or the coupling opening 38a1 are preferably located in a second protrusion 42 that extends upward in the sense of a protrusion from the first protrusions 34a, 34b.

As shown in FIG. 4, the second coupling opening 38 a 1 or 38 a 2 is disposed in one region of two projecting portions 34 a and 34 b that are separated in the circumferential direction, for example, at diametrically opposite positions. In this case, this coupling opening 38a1, 38a2 may be associated with a fixture 39a of the same or different fixing device 39 that fixes the hydraulic line of the associated existing circuit.
As can be seen in particular from FIG. 4, the coupling member 38c arranged at the upper right of the coupling point 38 has a coupling element 38d with the associated line, the center line 38e of the line being the mounting surface 39b and / or It extends parallel to the mounting surface of the coupling member 38c, and the center line 38b is substantially perpendicular to the center line 38e. In such a configuration, the center line 38e of the coupling member 38c and the adjacent side wall 2g are ca. It has an acute angle W2 of 45 °.

Within the scope of the present invention, the coupling member 38c can be integrally coupled to the protrusions 34a, 34b.
Apart from the above-described embodiment relating to the coupling point 38 with the hydraulic circuit, it is likewise useful to arrange the coupling point 38 in a leakage line that exists only in the at least one protrusion 34a. In this case, the coupling points are arranged in the length direction region L1 of the room 3.
The peripheral wall portion 2e of the peripheral wall 2c is also enlarged to improve the seat portion of the side wall portion that forms the peripheral wall portion 2e. That is, particularly consider the case where at least one associated protrusion 34a, 34b is not round and has a square design as shown in the upper part of FIG. 3 and the upper left of FIG. Such a peripheral wall portion 2e is suitable as the attachment surface 45 to the trigger device 46 for starting the adjusting mechanism 31a disposed in the inner portion 36, particularly when the outer periphery is a flat surface. The trigger device 46 is connected to a power source and / or a hydraulic source.

The flange 2d is detachably connected to the bowl-shaped housing 2a by a screw coupling 51 including a plurality of screws 51a arranged along the peripheral wall. The plurality of screws 51a pass through the through holes of the flange 2d and are screwed into screw holes in the end region of the peripheral wall 2c.
In order to fix the axial piston engine 1 to an unillustrated transport device such as an engine frame, a screw coupling 52 having a plurality of screw holes 52a arranged along the peripheral wall, for example, the projecting portion 34c is prepared in the flange 2d. The screw not to be inserted is introduced into the screw hole 52a, and is screwed into the screw hole of the transport device (not shown) to be fixed. The screw hole 52a can be formed by a small hole opened to the periphery.
The flange 2d also serves as an adapter for adapting and fixing the axial piston engine 1 to other transport devices (for example, other products). In such a case, two flanges 2d are prepared, and the screw holes 51a have the same design and the same hole pattern with respect to the same screw coupling 51, while the two flanges 2d are transported by screw holes 52a having different hole patterns. Adapt to the corresponding hole pattern of the device.

  The present invention is not limited to the above-described embodiments, and is also suitable for, for example, an inclined axis type axial piston engine. All descriptions and / or drawing features may be combined with each other in any desired manner within the scope of the invention.

DESCRIPTION OF SYMBOLS 1 Axial piston engine 2 Housing 2a Bowl-shaped housing part 2b Housing base 2c Peripheral wall 2d Flange 2e Peripheral wall part 2f Planar seating surface 2g Side wall part 3 Indoor 4 Swash plate 5 Cylinder drum 5a Bearing hole 6 Piston hole 7 Center line 9 Piston 11 Working chamber DESCRIPTION OF SYMBOLS 12 Joint 13 Slide 14 Cam board 15a, 15b Control opening 16 Supply line 17 Discharge line 18a, 18b Side wall 19 Drive shaft 19a Drive pin 21 Rotating shaft 23, 28 Through-hole 24 Seal 25, 25a Bearing 26 Separation coupling 27 Centering device 31 Adjustment device 31a, 31a1, 31a2 Adjustment mechanism 32 Swivel joint 32a Swivel shaft 32b Concave surface 32c Convex surface
34, 34a, 34b, 34c Projection part 34d Top part 34e Side surface part 36 Inside 37 Projection part 38 Joint point 38a1, 38a2 Joint opening 38b Center line 38c Joining member 38d Joining element 38e Center line 39 Fixing device 39a Fixing tool 39b Attachment surface 39c Fixing hole 41 Swivel limiting device 41a Stop screw 45 Mounting surface 46 Trigger device 51 Screw coupling 51a Screw 52 Screw coupling 52a Screw hole

Claims (15)

A housing (2) surrounding the chamber (3) by connecting two side walls (18a, 18b) and a peripheral wall (2c) to each other in the longitudinal direction;
A drive shaft (19) extending in the longitudinal direction in the housing (2) and rotatably mounted on the housing (2);
Mounted adjacent to the cylinder drum (5) in the housing (2) in the longitudinal direction and reciprocally movable in the piston hole (6) extending substantially in the longitudinal direction in the cylinder drum (5) A swash plate (4) for supporting the piston (9) mounted on the
A static pressure axial piston engine having
The peripheral wall (2c) has at least one radially projecting portion (34a), the projecting portion (34a) is configured to extend in the length direction of the housing (2), and has a rectangular shape. Or it is formed by two peripheral walls (2e) that divide the inside (36) that is arranged in a U-shape and expands in the radial direction ,
Further, a hydraulic coupling point (38) having coupling openings (38a1, 38a2) is arranged at the top (34d) of the protrusion (34a, 34b) in order to supply, discharge or exhaust the static pressure medium. This is a static pressure axial piston engine.   The hydrostatic axial piston engine according to claim 1, wherein the protrusion (34a) extends over a length (L1) of the chamber (3). The hydrostatic axial piston engine according to claim 1 or 2, wherein the two protrusions (34a) are arranged diametrically opposed to each other, or arranged apart from each other in the peripheral direction.   The cylinder drum (5) leans against a cam plate (14) disposed between the cylinder drum (5) and the side wall (18a) at a distance from the swash plate (4). The hydrostatic axial piston engine according to any one of claims 1 to 3, characterized in that (34a) extends longitudinally over said side wall (18a) or both said side walls (18a, 18b). . A housing (2) surrounding the chamber (3) by connecting two side walls (18a, 18b) and a peripheral wall (2c) to each other in the longitudinal direction;
A drive shaft (19) extending in the longitudinal direction in the housing (2) and rotatably mounted on the housing (2);
Mounted adjacent to the cylinder drum (5) in the housing (2) in the longitudinal direction and reciprocally movable in the piston hole (6) extending substantially in the longitudinal direction in the cylinder drum (5) A swash plate (4) for supporting the piston (9) mounted on the
Have
The cylinder drum (5) is separated from the swash plate (4) by a side surface and rests against a cam plate (14) disposed between the cylinder drum (5) and the side wall (18a). An engine,
A protrusion (34b) having a square or U-shaped cross section is disposed around the side wall (18a), and a coupling opening (in the top region of the protrusion (34b) for supplying, discharging, or exhausting the static pressure medium ( 38. A hydrostatic axial piston engine characterized in that a hydraulic coupling point (38) having 38a1, 38a2) is arranged. The hydrostatic axial piston engine according to claim 5 , wherein the protrusion (34b) extends at least partially along the peripheral wall (2c) or another side wall (18b) in the longitudinal direction. Any of claim 5 or claim 6, characterized in that the hydraulic coupling point (38) to a hydraulic line or a coupling member fixing device for fixing the (39) is part fastener (39a) is arranged The static pressure axial piston engine according to the above. 8. Hydrostatic axial piston engine according to claim 7 , characterized in that at least one preferably flat seating surface (39b) is provided at the hydraulic coupling point (38). The fixture (39a) is disposed only in, for example, the coupling point (38) region of the second protrusion (42) extending upward from the first protrusion (34a, 34b). The static pressure axial piston engine according to claim 7 or 8 , wherein The processing capacity of the axial piston engine (1) is increased or decreased by an adjusting device (31) having an adjusting mechanism (31a), and the swash plate (4) is used as a part of the adjusting device (31) of the swivel joint (32). The hydrostatic axial piston engine according to any one of claims 1 to 9 , wherein the hydrostatic axial piston engine is pivotally mounted around the swivel shaft (32a). The adjusting mechanism (31a) and / or swivel-limiting device (41), in one of the enlarged the internal (36), in claim 10, characterized in that extending away from the swivel axis (33) The described static pressure axial piston engine. One or two projections having a cross-space oriented in the transverse direction (34a, 34b, 34c) the claims from claim 1, characterized in that it is spaced apart from the swivel axis (33) 11 The static pressure axial piston engine according to any one of the above. Two spaced apart radial protrusions (34) extending in the length direction along the peripheral wall and having the enlarged interior (36) are arranged on both sides of the swivel shaft (33). The static mechanism according to claim 11 or 12 , wherein the adjusting mechanism (31a) and the swivel limiting device (41) are arranged diagonally opposite each other on each side of the swivel shaft (33). Pressure axial piston engine.   The hydrostatic axial piston engine according to claim 4, wherein the side wall (18a) is formed by a base wall (2b) of a bowl-shaped housing (2a). Said housing (2) said protrusions (34a, 34b, 34c) from claim 1, characterized in that it has a delimited cross section by four side wall portions (2f) in the region of claim 14 The static pressure axial piston engine according to any one of the above.

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