Hydraulic unit

Abstract

A hydraulic unit having a housing includes a tank and a pump arranged adjacent to one another in a fluid supply region, and a controller region is arranged thereabove. Since the pump is embodied in an upright design, a compact hydraulic unit with a small footprint is implemented.

Claims

1. A hydraulic unit comprising: a fluid supply region arranged in a first housing portion; a controller region arranged in a second housing portion located above the first housing portion; at least one hydraulic tank arranged in the first housing portion; a wall configured to isolate the first housing portion fluid supply region from the second housing portion; and at least one pump subassembly arranged in the first housing portion adjacent to the at least one hydraulic tank, wherein the at least one pump subassembly is oriented upright, such that a greatest extent of the at least one pump subassembly is vertical.

2. The hydraulic unit according to claim 1, wherein: the at least one pump subassembly comprises a hydraulic pump directly coupled to a drive motor, and a main axis of the hydraulic pump and the drive motor is vertical.

3. The hydraulic unit according to claim 1, wherein: the fluid supply region is defined on a bottom face by a base, the at least one pump subassembly and the at least one hydraulic tank are connected in a parallel circuit, and the at least one pump subassembly and the at least one hydraulic tank are connected to the base.

4. The hydraulic unit according to claim 3, wherein: the base is configured as a block base, the at least one pump subassembly is rigidly connected to the base.

5. The hydraulic unit according to claim 3, wherein the base includes a polymer concrete.

6. The hydraulic unit according to claim 3, wherein the base and the first housing portion sealingly surround the fluid supply region at least on the bottom face and on an outer face.

7. The hydraulic unit according to claim 3, wherein the base is shaped as a fluid collection trough.

8. The hydraulic unit according to claim 1, wherein the fluid supply region and an electric controller region provided in the controller region are arranged on a common side of the hydraulic unit.

9. The hydraulic unit according to claim 1, wherein the fluid supply region and a fluid circuit installation space in the controller region are fluidly connected and/or interconnected by a terminal block.

10. The hydraulic unit according to claim 1, further comprising: a housing including the first and second housing portions and formed by at least one frame part.

11. A hydraulic unit comprising: a fluid supply region arranged in a first housing portion; a controller region arranged in a second housing portion located above the first housing portion; at least one hydraulic tank arranged in the fluid supply region; and at least one pump subassembly arranged in the fluid supply region adjacent to the at least one hydraulic tank, wherein the at least one pump subassembly is oriented upright, such that a greatest extent of the at least one pump subassembly is vertical, wherein the at least one pump subassembly comprises a hydraulic pump operably connected to a drive motor, wherein the fluid supply region is defined on a bottom face by a base, and wherein the drive motor is spaced apart from the base by the hydraulic pump.

12. A hydraulic unit comprising: a fluid supply region arranged in a first housing portion; a controller region arranged in a second housing portion located above the first housing portion; at least one hydraulic tank arranged in the first housing portion; at least one pump subassembly arranged in the first housing portion and operably connected to the at least one hydraulic tank; and a wall located between the first housing portion and second housing portion and configured to isolate the first housing portion fluid supply region from the second housing portion, wherein the at least one pump subassembly is oriented upright.

13. The hydraulic unit according to claim 12, wherein: the at least one pump subassembly comprises a hydraulic pump directly coupled to a drive motor, and a main axis of the hydraulic pump and the drive motor is vertical.

14. The hydraulic unit according to claim 12, wherein: the fluid supply region is defined on a bottom face by a base, the at least one pump subassembly and the at least one hydraulic tank are connected in a parallel circuit, and the at least one pump subassembly and the at least one hydraulic tank are connected to the base.

15. The hydraulic unit according to claim 14, wherein: the base is configured as a block base, the at least one pump subassembly is rigidly connected to the base.

16. The hydraulic unit according to claim 14, wherein the base includes a polymer concrete.

17. The hydraulic unit according to claim 14, wherein the base and the first housing portion sealingly surround the fluid supply region at least on the bottom face and on an outer face.

18. The hydraulic unit according to claim 14, wherein the base is shaped as a fluid collection trough.

19. The hydraulic unit according to claim 12, wherein the fluid supply region and an electric controller region provided in the controller region are arranged on a common side of the hydraulic unit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) A preferred exemplary embodiment of the disclosure is described in more detail hereinafter with reference to schematic drawings, in which:

(2) FIG. 1 shows a hydraulic unit according to the disclosure with a closed housing in a perspective view,

(3) FIG. 2 shows a fluid supply region of the hydraulic unit with an open housing in a perspective view,

(4) FIG. 3 shows a controller region of the hydraulic unit with an open housing in a perspective view,

(5) FIG. 4 shows the controller region with an open in a perspective view which is different from FIG. 3,

(6) FIG. 5 shows a schematic longitudinal section through the hydraulic unit, and

(7) FIG. 6 shows a terminal block with attachments in a perspective view.

DETAILED DESCRIPTION

(8) FIG. 1 shows a hydraulic unit 1 according to the invention for stationary operation, said hydraulic unit being received in a housing 2. The housing 2 receives in a lower housing portion 4 a fluid supply region 6 and/or hydraulic region and/or hydraulic unit and in an upper housing portion 8 a controller region 10.

(9) A base 12 and/or a base plate, which may be regarded as part of the housing 2, are designed and dimensioned from polymer concrete and as a collection trough and said base terminates the fluid supply region 6 on the bottom face. Self-supporting walls 14 with internal sound damping (not shown) adjoin the base 12 in the vertical direction to the side and to the rear in a fluid-tight manner, whilst a door 16 which also has internal sound damping is fastened at the front so as to be closed in a fluid-tight manner, see in particular FIG. 2.

(10) A hydraulic tank 18, a pump subassembly 20 and/or hydraulic drive unit and a cooling subassembly 22 and/or cooler subassembly are accommodated in the fluid supply region 6 in a manner which saves space in terms of footprint. The hydraulic tank 18 in the present case is rigidly connected to the base 12. The hydraulic tank 18 has a design which is optimized in terms of flow and degassing and is designed to be of upright design, i.e. not lower than it is wide and deep so that it only requires a small footprint. The hydraulic tank 18 in the present case is designed as a tank subassembly which in addition to the tank as a container has a filling state display, a filling level sensor, a sensor interface, a suction interface, and a return line interface (none thereof being shown), which may all be provided optionally and independently of one another. The pump subassembly 20 comprises a pump 24 which is coupled rigidly to the base 12 in an upright design, i.e. also not lower than it is wide and deep, and it comprises a synchronous motor as a drive 26 coupled rigidly to the pump 24 in order to reduce the overall height and to increase the total inertial mass. The pump shaft is received in a hollow shaft of the motor (not shown). The cooling subassembly 22 is connected in parallel to the pump subassembly 20 and attached to the hydraulic tank 18 in a manner which is fluidically independent from a consumer circuit and/or pressure circuit. The cooling subassembly 22 comprises a cooling pump 28, the motor thereof being concealed in a space-saving manner in a flow-guidance geometry of the hydraulic tank 18, and a plate cooler 30 which is also partially concealed in a space-saving manner in a flow geometry of the hydraulic tank 18.

(11) An electric controller region 32 and/or an electrical unit and/or a switchbox portion and a fluid circuit installation space 34 shown clearly in FIG. 4 and/or a region for an application-specific and/or customer-specific hydraulic controller, shown clearly in FIG. 3, are accommodated in the controller region 10.

(12) The electric controller region 32 is enclosed in a dustproof manner by walls 14 and a door 16 arranged at the front, wherein an air inlet 36 with an air inlet filter 38 and an air outlet 40 with an internal air guidance geometry 56, such as at least one air guidance plate, and an air outlet filter 42 are arranged on approximately diagonally opposing housing portions in the walls 14. A main switch 44, a power supply choke 46, a network filter 48, electronic elements 50 for distribution and fuse protection, a drive controller 52 and on the aperture of the door 16 a touch-sensitive screen 54 as a human-machine interface are shown in the electric controller region 32 by way of example. At least one fluid-tight and dust-proof cable lead-in 56 through a wall 14 separating the fluid supply region 6 and the electric controller region 32 in a fluid-tight and dust-proof manner is also shown in FIG. 3, for example a motor power cable and/or a sensor cable being guided therethrough.

(13) For easier accessibility the fluid circuit installation space 34 is partially open in the present case to the rear and to the top, wherein the walls 14 may be used as side cladding. Access to the fluid controller 62 is possible through an aperture in a lateral wall 14 in the present case, see FIG. 1. An interface 58 of a terminal block 60 facing upwardly leads into the fluid circuit chamber 34 on the bottom face. The interface 58 in the present case is configured for the approximately vertical installation of a customer-specific and/or application-specific fluid controller 62 and/or such a control block and/or valve block in a segmented block design according to, for example, the design IH20. This design is only one preferred example of an interface 58 which is compliant with regulations. In addition to the fluid controller 62 in the fluid circuit installation space 34 a degassing unit 64 for active air bubble removal in and out of the hydraulic tank 18 is attached to the terminal block 60. In the present case, optionally additional connections 66 lead to and from the hydraulic tank 18 on the bottom face into the fluid circuit installation space 34. At least one electrical interface 67 connects the two regions 32, 34 through a wall 14 between the electric controller region 32 and the fluid circuit installation space 34.

(14) In the view of FIG. 4 the fluid supply region 6 with the hydraulic tank 18 may be identified on the bottom face, but optionally a fluid-tight terminating wall may be arranged so as to terminate the fluid supply region 6 at the top and/or the fluid circuit installation space 34 at the bottom; this wall which terminates the fluid circuit installation space 34 at the bottom in a fluid-tight manner is preferably designed for collecting leakage oil and for the transfer thereof to the hydraulic tank 18, to an upper face of the base 12 and/or the like. As an alternative, as may be identified in the side view of FIG. 5, an upper face of the hydraulic tank may be designed with a leakage guide geometry 68, for example obliquely and/or as an outlet.

(15) FIG. 5 shows in the sectional side view a principal construction of the hydraulic unit 1. In this case, a fluid supply region 6 which is arranged at the bottom and a controller region 10 which is arranged thereabove and/or at the top are defined by respective housing portions 4, 8. In each case in a front region 70, i.e. on a front unit side, the pump subassembly 20 and the cooling subassembly 22, the electric controller region 32 and the terminal block 60 therebetween, in particular by way of example a filter 72 screwed therein, are arranged so as to be accessible via doors 16. The screen 54 is also accessible from the front. The hydraulic tank 18 and the fluid circuit installation space 34 are arranged to the rear thereof in each case in a rear region 74, i.e. on a rear unit side. In the side view of FIG. 5 in the front part of the fluid supply region a suction line 76 leading from the hydraulic tank 18 to the pump 24, a pressure connection 78, such as a hose, leading from the pump 24 to the terminal block 60 and a return 80 leading from the terminal block 60 to the hydraulic tank 18 are also shown.

(16) The terminal block 60 has lateral connections which are downwardly oriented and/or at least able to be reached from below in terms of assembly technology at one end in the front region 70 and lateral connections which are upwardly oriented and/or at least able to be reached from above in terms of assembly technology at one end in the rear region 74. For improved understanding of the design of the terminal block 60 this is shown in a variant in FIG. 6 with an attached filter 72 and an attached three-part fluid controller 62.

(17) In the present case the housing 2 is designed as a combined construction. The basis forms the base 12 which is mounted on height-adjustable feet. The lower housing portion 4 with self-supporting walls 14 and a door 16 are constructed on the base 12. Alternatively, in the lower housing portion 4 frame parts 82, such as profiled bars, may also be used. In the present case, profiled bars in the manner of semi-finished products are constructed as frame parts 82 on the lower housing portion, said frame parts in the present case forming a layer which is advantageously suitable for coupling/attaching further elements. Via the frame parts 82, the upper housing portion 8 is formed by further walls 14, wherein the electric controller region 32 is enclosed on all sides by walls 14 and a door 16, whilst in the present case the fluid controller installation space 32 is only defined at the side by walls 14. This construction has many advantageous properties. For example, the pump subassembly 20 is enclosed in a fluid-tight and sound-damping manner at least on five sides and preferably on six sides so that emissions are reduced; in other words, they may be substantially enclosed and thus well sound-proofed.

(18) Moreover, the electric controller region 32 may be heated directly by the air outlet 40 at the top. Hydraulic consumer connections (not shown) on the fluid controller 62 are freely accessible from the rear face and in a manner which is spatially separate from operating elements, so that changing the fluid controller 62 may be undertaken without reconfiguring the housing 2. In the present case, the hydraulic unit is a compact unit which, in particular, effectively utilizes a space which is available on its footprint and/or standing surface in the vertical direction and thus fulfills the requirements of a modern factory workshop in a cost-effective manner.

LIST OF REFERENCE NUMERALS

(19) 1 Hydraulic unit 2 Housing 4 Housing portion 6 Fluid supply region 8 Housing portion 10 Controller region 12 Base 14 Wall 16 Door 18 Hydraulic tank 20 Pump subassembly 22 Cooling subassembly 24 Pump 26 Drive 28 Cooling pump 30 Plate cooler 32 Electric controller region 34 Fluid circuit installation space 36 Air inlet 38 Air inlet filter 40 Air outlet 42 Air outlet filter 44 Main switch 46 Power supply choke 48 Network filter 50 Electronic elements 52 Drive controller 54 Screen 56 Cable lead-in 58 Interface 60 Terminal block 62 Fluid controller 64 Degassing unit 66 Additional connections 67 Electrical interface 68 Leakage guide geometry 70 Front region 72 Filter 74 Rear region 76 Suction line 78 Pressure connection 80 Return 82 Frame part