Abstract
Mounting structure for housing-free hydraulic axial piston machines of the bent axis or swash plate design, having a closing plate on which a cylinder block unit with displacing pistons arranged therein is supported, and having a drive or driven shaft. The mounting structure here is designed in the manner of a basket and has a receptacle for the drive or driven shaft and at least two struts which are in each case connected at one end to the receptacle and at the other end to the closing plate in such a manner that the closing plate, the cylinder block unit and the drive or driven shaft are heldanalogously as in a housingin a functionally ready position.
Claims
1. Mounting structure (1) for the housing-free installation of a hydraulic axial piston machine (100) of bent axis or swash plate design, with a drive or driven shaft (7) and with a closing. plate (11) on which a cylinder block unit (5) with displaces pistons (6) arranged therein is supported, wherein the mounting structure (1) is designed in the manner of a basket or with struts and has a receptacle (3) for the drive shaft or driven shaft (7) and a connecting structure (2) which is connectable at a first end to the receptacle (3) and at a second end to the closing plate (11) in such a manner that the closing plate (11), the cylinder block unit (5) and the drive or driven shaft (7) are heldanalogously as in a housingin a functionally ready position, characterized in that the second end of the connecting structure (2), which end is to be connected to the closing plate (11), is arranged on that side of the axial piston machine (100) which is opposite the drive or driven shaft (7), and in that the mounting structure (1) is not provided for absorbing the supporting forces occurring during the working mode of the axial piston machine (100) wherein the struts arc screwable, rivotable, adhesively bondable, weldable, solderable or fastenable by knots to the closing plate (11), or are connectable thereto by flanging and/or nailing.
2. Mounting structure (1) according to claim 1, in which a roller bearing which is arranged on the drive or driven shaft (7) of an axial piston machine (100) is held by the receptacle (3).
3. Mounting structure according to claim 1, in which the receptacle (3) forms a bearing shell or a bearing receptacle for a roller bearing or plain bearing (9) and/or a pressure plate (15) for a swash plate.
4. Mounting structure (1) according to claim 3, in which the hearings shell or the support of the swash plate is formed integrally with the receptacle (3) of the mounting structure (1).
5. Mounting structure (1) according to claim 1, in which the mounting structure (1) is designed with a multiplicity of struts, and the receptacle (3) has a ring-like structure.
6. Mounting structure (1) for the housing-free installation of a hydraulic axial piston machine (100) of bent axis or swash plate design, with a drive or driven shaft (7) and with a closing plate (11) on which a cylinder block unit (5) with displacer pistons (6) arranged therein is supported, wherein the mounting structure (1) is designed in the manner of a basket or with struts and has a receptacle (3) for the drive shaft or driven shaft (7) and a connecting structure (2) which is connectable at a first end to the receptacle (3) and at a second end to the closing plate (11) in such a manner that the closing plate (11), the cylinder block unit (5) and the drive or driven shaft (7) are heldanalogously as in a housingin a functionally ready position, characterized in that the second end of the connecting structure (2), which end is to be connected to the closing plate(11), is arranged on that side of the axial piston machine (100) which is opposite the drive or driven shaft (7), and in that the mounting structure (1) is not provided for absorbing the supporting forces occurring during the working mode of the axial piston machine (100)wherein the struts are formed integrally together with the receptacle (3).
7. Mounting structure (1) according to claim 1, in which the struts are formed from plastic, metal, textile and/or rubber so as to be strong in tension, and the receptacle (3) is formed from plastic, metal, textile. and/or rubber.
8. Mounting structure (1) according to claim 1, in which add-on parts (10), in particular switches, sensors, detectors, transmitters, receivers, electric lines, lubricant lines, adjustment or coordinating screws, are arcangable on the struts.
9. Mounting structure (1) according to claim 1, in which a lubricant line (4), an electric line (4), a pneumatic line (4), a data line (4), preferably an optical data line (4), or a mechanical connecting line (4) is formed within at least one of the struts, wherein electric, optical, pneumatic or mechanical signals and/or data can be passed on by means of the receptacle (3).
10. Mounting structure (1) for the housing-free installation, of a hydraulic axial piston machine (100) of bent axis or swash plate design, with a drive or driven shaft (7) and with a closing plate (11) on which a cylinder block unit (5) with displacer pistons (6) arranged therein is supported, wherein the mounting structure(1) is designed in the manner of a basket or with struts and has a receptacle (3) for the drive shaft or driven shaft (7) and a connecting structure (2) which is connectable at a first end to the receptacle (3) and at a second end to the closing plate (11) in such a manner that the closing plate (11), the cylinder block unit (5) and the drive or driven shall (7) are heldanalogously as in a housingin a functionally ready position, characterized in that the second end of the connecting structure(2), which end is to be connected to the closing plate (11), is arranged on that side of the axial piston machine (100) which is opposite the drive or driven shaft (7), and in that the mounting structure (1) is not provided for absorbing the supporting forces occurring during the working mode of the axial piston machine (100); a hydromechanical functional unit, in which an axial piston machine (100) is accommodated together with a mechanical gearing (13) in just one housing (12), wherein the drive shaft or driven shaft (7) of the axial piston machine (100) forms the drive or output of the gearing, and the axial piston machine (100) is connected removably to the housing (12); and after the axial piston machine (100) is installed in the housing (12), at least one of the struts can be removed.
Description
BRIEF DESCRIPTION OF THE FIGURES
(1) FIG. 1 shows schematically a perspective view of a first embodiment of the mounting structure according to the invention for an axial piston machine;
(2) FIG. 2 shows schematically a perspective view of a second embodiment of the mounting structure according to the invention for an axial piston machine;
(3) FIG. 3 shows a sectional view of an axial piston machine of bent axis design with the mounting structure according to the invention;
(4) FIG. 4 shows a sectional view of an axial piston machine of bent axis design with a mounting structure according to the invention which is accommodated together with a gearing in a gearing housing;
(5) FIG. 5 shows a view of a detail from a clearance in the housing for a mounting structure according to the invention accommodating the mounting of the drive or driven shaft of an axial piston machine;
(6) FIG. 6 shows a sectional view of an axial piston machine of swash plate design with the mounting structure according to the invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
(7) FIG. 1 illustrates a mounting structure 1 according to the invention for an axial piston machine without a housing, the figure showing an annular receptacle 3 for the drive or driven shaft of the axial piston machine and a basket-like connecting structure 2 which, similar to a perforated casing, surrounds the moving parts of an axial piston machine. The mounting structure 1 which is shown in FIG. 1 and is in the form of a basket with an open face, which constitutes a receptacle 3 for the drive or driven shaft of an axial piston machine, is not provided here for absorbing the supporting forces occurring during the working mode of an axial piston machine, as is provided in conventional axial piston machines with a housing. The receptacle 3 for the drive or driven shaft of an axial piston machine forms, together with the connecting structure 2, the basket-like mounting structure 1 according to the invention. The mounting structure 1 can be connected via extensions 16 to a closing plate of an axial piston machine, and therefore the receptacle 3 is fixed in the relative position thereof with respect to the closing plate of the axial piston machine via the connecting structure 2, as a result of which a housing-free axial piston machine is held together by means of the mounting structure 1 according to the invention in such a manner, and the components thereof are held in position in such a manner, as though the axial piston machine were accommodated in a housing.
(8) FIG. 2 shows a second exemplary embodiment of a mounting structure 1 according to the invention with a connecting structure 2, which is designed in the form of three struts, between a receptacle 3 for a drive or driven shaft of an axial piston machine and extensions 16 for fastening the mounting structure 1 to a closing plate for an axial piston machine. The mounting structure 1 which is constructed in the manner of a tripod is of integral design here, but this is only by way of example. It is customary in the art for each of the struts 2 per se and also the receptacle 3 to be able to be designed as individual parts which then, suitably connected to one another, form the mounting structure 1 according to the invention. The number of struts 2 shown in FIG. 2 is likewise only by way of example and is selected only for the purposes of explanation. The receptacle 3 for the drive or driven shaft 7, which, of course, can also be of polygonal design, can also be connected, for example, by only one or two struts 2 or a multiplicity of struts 2 to a closing plate 11 of an axial piston machine 100 (cf. FIGS. 3-6). In a documented manner, the individual struts 2 can be manufactured from the same material or from different materials, in the same manner as the receptacle 3 does not have to be produced from the same material as the struts 2, but rather, according to its function, from the most suitable material for this. This also expediently applies to the basket-like embodiment of the mounting structure 1 that is shown in FIG. 1. If the receptacle 3 for the drive or driven shaft of an axial piston machine 100 is intended at the same time to form a bearing shell for the rotatable mounting of the drive or driven shaft in a gearing housing, the receptacle 3 is preferably formed from metal.
(9) FIG. 3 shows a housing-free axial piston machine 100 which is held in a functionally ready position by the mounting structure 1, in precisely the same manner as would take place in a housing. FIG. 3 illustrates an axial piston machine 100 of bent axis type of construction purely by way of example. As is customary in the art, and therefore covered by the inventive concept, the mounting structure 1 can also be used in an analogous manner for an axial piston machine of swash plate or swivel-plate type of construction or for a hydraulic constant machine (cf. FIG. 6).
(10) The bent axis axial piston machine 100 illustrated in FIG. 3 is held by the mounting structure 1 in a position capable of being fitted and also capable of functioning, wherein, in FIG. 3, an displacement unit 8 integrated in a closing plate 11 holds the cylinder block unit 5 in a swiveled-out position. From the illustration in FIG. 3, it is seen that the cylinder block unit with the displacing pistons 6 arranged therein is swiveled by the displacement unit 8 in the swiveling angles provided for the axial piston machine 100, and the mounting structure 1 does not restrict the ability of swiveling, i.e. the adjustability of the delivery volume of the axial piston machine 100. The axial piston machine 100 accommodated in this manner by the mounting structure 1 can be inserted as an assembly into a housing, wherein the roller bearings 9 arranged on the drive or driven shaft 7 have to be fixed in a housing. The mounting structure 1 can remain connected here to the axial piston machine 100 if, for example, corresponding clearances are provided in the housing. A corresponding view of a detail of such a clearance is illustrated in FIG. 4.
(11) It is furthermore apparent from FIG. 3 that the struts 2 for holding the receptacle 3 of the drive or driven shaft 7 can serve at the same time as a holder for add-on parts 10, here for a rotational speed sensor. Furthermore, an integrated lubricant line 4 which can feed lubricant through the receptacle 3 to the rolling bearing 9 is illustrated schematically in the upper strut 2. However, the cavity formed in the upper strut 2 of the mounting structure 1 can serve as a cable duct or as a receptacle for a signal line.
(12) FIG. 3 furthermore shows by way of example the lubricant supply between the two rolling bearings 9 which are positioned obliquely with respect to the axis of rotation of the drive or the driven shaft 7. However, any other supply of lubricant to the rolling bearing/the rolling bearings that is customary in the art is covered by the inventive concept precisely as is the mounting of the drive or driven shaft in a housing by just one roller bearing 9. Furthermore, the inventive concept also covers arranging the displacement unit 8 outside the closing plate such that the pressures occurring in the cylinder bores of the cylinder block unit do not load the displacement unit. Such a closing plate without a displacement unit can be used, for example, in hydraulic constant motors in which the delivery or displacement volume cannot be adjusted.
(13) In an exemplary embodiment, which is shown in FIG. 6, in an axial piston machine of swash plate type of construction, the receptacle 3 of the mounting structure 1 can serve as a supporting pressure plate for the swash plate which, for as long as the axial piston machine 100 is not yet inserted into a housing, can absorb pressure only to a limited extent. Other variations of axial piston machines 100 of constant or displacement machine design that are not described here but are customary in the art, for example of bent axis, swash plate, swiveling-axle or swiveling-plate design, are usable with the mounting structure 1 according to the invention and are therefore covered by the inventive concept. Irrespective of the type of construction of the axial piston machine, the closing plate 11 is located on that side of the axial piston machine 100 which is opposite the drive or driven shaft 7 and on which the displacement unit 8 is customarily also located, wherein the actual displacement device, in particular the swash plate 15, can be arranged on that side of the cylinder block unit 5 which is opposite the displacement unit 8.
(14) FIG. 4 schematically illustrates, with reference to a further exemplary embodiment, the fitting of the axial piston machine 100 from FIG. 3 in a gearing housing 12. The drive or driven shaft 7 of the axial piston machine 100 is connected here to a gearwheel 13 which meshes with a further gearwheel 14. The rolling bearing 9 facing the cylinder block unit 5 is supported here outside the regions of the connecting structure, here the struts 2, by the housing 12 as is the rolling bearing 9 facing the gearwheel 13. A corresponding clearance for the struts 2 in the housing 12 can be gathered from the view of the detail in FIG. 4 and is indicated in FIG. 4 by the intersecting line or reference line A-A.
(15) As is clear from FIGS. 1 to 6, a housing for the use of an axial piston machine 100 in a functional unit with a gearing can be saved on by the use of a mounting structure 1 according to the invention. The axial piston machine 100 can be fitted and removed here without a housing, but with the mounting structure 1 according to the invention, as an assembly of the functional unit. The mounting structure according to the invention holds the closure plate 11, the cylinder block unit 5 and the drive or driven shaft 7 in a position in which the axial piston machine 100 can be operated theoretically or can carry out a test run or dry run. The adjustability of the delivery volume of the axial piston machine 100 is preferably maintained when the mounting structure 1 according to the invention is used.
