Kit for producing a hydraulic apparatus

Abstract

A kit (1) for producing a hydraulic apparatus, comprising a supply unit (200) and an adapter unit (100), wherein - the adapter unit (100) defines a hydraulic pump and a hydraulic motor, and internal ducts designed to be connected to the supply unit (200) via the first interface (102), - the supply unit (200) has a first orifice (210), a second orifice (220), and a valve (230, 240), wherein the second orifice (220) is fluidically connected to the first interface (202) of the supply unit (200), the valve (230, 240) is designed to, in a first configuration, connect the first orifice (210) to the adapter unit (100) via the second interface (204) of the supply unit (200), and the adapter unit (100) to the first interface (202) of the supply unit (200).

Description

KIT FOR THE CREATION OF A HYDRAULIC DEVICE Description Technical Field

[0001] The present invention relates to the field of hydraulic devices, and more particularly relates to a kit for producing a modular hydraulic device. Prior art

[0002] The sizing of hydraulic devices for different applications requires the development of numerous variants to meet different power and displacement requirements. It is thus known to offer modular systems to meet different requirements while minimizing the number of component references required.

[0003] The development of new components requires redefining the architecture of such hydraulic devices. The present invention thus proposes to respond to these problems. Statement of the invention

[0004] The present invention thus relates to a kit for producing a hydraulic device, comprising a power supply unit and an adapter unit, the power supply unit comprising a power supply casing comprising a first interface, and a second interface adapted to be assembled to the adapter unit, the adapter unit comprising an adapter casing comprising a first interface adapted to be assembled to the power supply unit, in which - the adapter block comprises a first assembly and a second assembly, movable in rotation one by relative to each other along a main axis, the first assembly comprising a cam, the second assembly comprising a cylinder block having a plurality of housings in which pistons slide, each piston being positioned in a housing, the pistons and housings defining a hydraulic pump and a hydraulic motor, and internal conduits adapted to be connected to the power unit via the first interface, - the power supply unit comprises a first port, a second port, and a valve, wherein the second port is fluidically connected to the first interface of the power supply unit, the valve is adapted to in a first configuration, connect the first port to the adapter unit via the second interface of the power supply unit, and the adapter unit to the first interface of the power supply unit.

[0005] According to one example, the valve is adapted to, in a second configuration, connect the first port to the first interface of the power supply.

[0006] According to one example, in the first configuration, the primary port is in fluid connection with the adapter block, which is in fluid connection with a conduit opening at the first interface of the power block.

[0007] In one example, the adapter block has an inlet conduit and a discharge conduit, and wherein in the first configuration, the primary port of the power block is fluidly connected to one of the inlet conduit and the discharge conduit, and a conduit opening at the second interface of the power block is fluidly connected to the other of the inlet conduit and the discharge conduit.

[0008] According to one example, the power supply has a conduit opening at its second interface, and wherein the valve is configured to, in the second configuration, connect the first port to said conduit via conduits internal to the power supply, and in the first configuration, connect the first port to said conduit via the adapter block.

[0009] According to one example, the kit comprises a distribution block, the distribution block comprising a first interface and a second interface adapted to be assembled to the first interface of the power supply block, wherein the distribution block comprises a plurality of conduits opening at the first interface of the distribution block and at the second interface of the distribution block, adapted to provide an intake and a discharge of fluid at the first interface of the distribution block by the power supply block.

[0010] According to one example, the kit comprises a hydrocouple block, the hydrocouple block comprising a first interface and a second interface adapted to be assembled to the distribution block, the hydrocouple block comprises a first assembly and a second assembly, movable in rotation relative to each other along a main axis, the first assembly comprising a cam or an inclined plate, the second assembly comprising a cylinder block having a plurality of housings in which pistons slide, each piston being positioned in a housing so as to define a plurality of chambers, the hydrocouple block having internal conduits opening at the second interface of the hydrocouple block,

[0011] According to one example, the kit further comprises a brake block, comprising a brake, adapted to selectively apply a force opposing relative rotation between the first assembly and the second assembly of the hydrocouple block, said brake block being adapted to be assembled to an interface of the hydrocouple block.

[0012] In one example, the hydrocouple block defines a radial piston hydraulic machine, wherein the cylinder block, pistons, and cam are configured such that the pistons reciprocate radially relative to the main axis upon relative rotation between the first set and the second set.

[0013] According to another example, the hydrocouple block defines an axial piston hydraulic machine, in which the cylinder block, the pistons and an inclined plate are configured so that the pistons reciprocate axially relative to the main axis during relative rotation between the first set and the second set.

[0014] According to one example, the kit comprises a bearing block having a first bearing interface adapted to be assembled to the first interface of the hydrocouple block, the bearing block comprising a housing, a shaft extending along the main axis, and bearings defining a bearing between the housing and the shaft, in which the shaft is adapted to engage in the cylinder block of the hydrocouple block, so as to be rotationally integral with the cylinder block of the hydrocouple block.

[0015] In one example, the brake block is positioned between the bearing block and the hydrocouple block along the main axis.

[0016] According to one example, the power supply unit and the adapter unit are assembled successively along the main axis.

[0017] According to one example, the hydrocouple block, the distribution block, the power supply block and the adapter block are assembled successively along the main axis.

[0018] In one example, the pistons and housings of the adapter block define a hydraulic pump and a hydraulic motor of separate displacements.

[0019] The present invention also relates to an assembly comprising a kit as proposed hydraulically connected with a hydraulic consumer or with a hydraulic pump.

[0020] The hydraulic consumer is, for example, a component from the following list: a hydraulic motor, a hydraulic cylinder, a part of a hydraulic circuit comprising one or more hydraulic components.

[0021] The present invention also relates to an assembly comprising a kit as proposed hydraulically connected with a hydraulic consumer, the hydraulic consumer being a hydraulic cylinder, comprising a cylinder body and a cylinder rod slidably mounted relative to the body, the body comprising a first chamber delimited by an internal wall, and comprising a fluid reservoir formed around the first chamber and delimited by an external wall.

[0022] The present invention also relates to an assembly comprising a kit as proposed and a hydraulic pump operated by an electric motor providing the pressure supply, the assembly being hydraulically connected with a hydraulic consumer, the hydraulic consumer being a hydraulic cylinder, comprising a cylinder body and a cylinder rod slidably mounted relative to the body, the body comprising a first chamber delimited by an internal wall, and comprising a fluid reservoir formed around the first chamber and delimited by an external wall. Such an assembly provides a ready-to-use electro-hydraulic cylinder (EHA linear or electro hydraulic actuator - in English - linear type), with an integrated pressure adapter.

[0023] The present invention also relates to a vehicle comprising a kit as defined above in which the hydrocouple block defines a hydraulic pump, and a hydraulic circuit comprising at least one hydraulic component connected to the kit. Brief description of the drawings

[0024] The invention and its advantages will be better understood upon reading the detailed description given below of different embodiments of the invention given as non-limiting examples.

[0025] [Fig. 1] Figure 1 shows an example of a kit according to one aspect of the invention.

[0026] [Fig. 2] Figure 2 shows an example of a schematic representation of a pressure adapter.

[0027] [Fig. 3] Figure 3 shows another example of a schematic representation of a pressure adapter.

[0028] [Fig. 4] Figure 4 shows another example of a schematic representation of a pressure adapter.

[0029] [Fig. 5] Figure 5 is a hydraulic diagram illustrating an example of a power pack and adapter block structure.

[0030] [Fig. 6] Figure 6 shows another example of a kit according to one aspect of the invention.

[0031] [Fig. 7] Figure 7 shows another example of a kit according to one aspect of the invention.

[0032] [Fig. 8] Figure 8 shows an example of application of a kit according to one aspect of the invention to a jack.

[0033] [Fig. 9] Figure 9 shows an example of application of a kit according to one aspect of the invention to a jack.

[0034] [Fig. 10] Figure 10 shows another example of application of a kit according to one aspect of the invention to a jack.

[0035] [Fig. 11] Figure 11 shows an example of application of a kit according to one aspect of the invention to a vehicle.

[0036] Throughout the figures, common elements are identified by identical numerical references. Description of the embodiments

[0037] Figure 1 shows an example of kit 1 according to one aspect of the invention.

[0038] The kit 1 as presented comprises an adapter block 100 and a power supply 200. For the kit 1, an axial direction XX defined along a main axis XX, and a radial direction extending from the axial direction XX are generally defined. The power supply 200 and the adapter block 100 are adapted to be assembled along the axial direction XX.

[0039] The power supply 200 comprises a first interface 202 and a second interface 204. The adapter block 100 has a first interface 102, adapted to be sealedly assembled on the second interface 204 of the power supply 200.

[0040] More generally, the various interfaces presented in the context of this presentation include sealing means adapted to ensure a sealed assembly when two interfaces are assembled. In the example illustrated in Figure 1, the second interface 204 of the power supply unit 200 is provided with sealing elements. It is understood that this embodiment is not limiting, and that one and / or the other of the interfaces considered may be provided with sealing elements. In the example presented in Figure 1, it is therefore understood that the second interface 204 of the power supply unit 200 and / or the first interface 102 of the adapter unit 100 may be provided with sealing elements. The same applies to the different interfaces which will be presented subsequently.

[0041] The adapter block 100 is adapted to perform a pressure adapter function.

[0042] Figure 2 illustrates an example of a schematic representation of a pressure adapter 1 included in such an adapter block 100.

[0043] The pressure adapter 100 as shown diagrammatically has two rotationally coupled hydraulic members, one being adapted to have a motor operation, and the other being adapted to have a pump operation. Here, the reference 10 will designate the hydraulic motor, and the reference 20 will designate the hydraulic pump.

[0044] The hydraulic motor 10 has a primary inlet 12 and a primary discharge 14. The hydraulic pump 20 has a secondary inlet 22 and a secondary discharge 24. The hydraulic motor 10 is adapted to be connected to a supply providing a first flow rate Q1 at a first pressure PI, and delivers a flow rate Qm (in the embodiments presented Qm = Q1 if there are no leaks) at a pressure Pm. The hydraulic motor 10 rotates the hydraulic pump 20. The hydraulic pump 20 is supplied by a flow rate Qp (in the embodiments presented Qp = Q2 if there are no leaks) at a pressure Pp, and is adapted to deliver a second flow rate Q2 at a second pressure P2 such that P2 is different from Pl. It is known to those skilled in the art that for operation of the pump without cavitation, the pressure Pp at the inlet of the pump must be greater than a minimum boost pressure of the pump.

[0045] Depending on the desired pressure adaptation, P2 can be greater than PI or less than PI, thus respectively achieving a pressure riser or a flow riser (and therefore a pressure reducer).

[0046] Such an adapter 1 comprises one or more hydraulic machines each comprising a first assembly and a second assembly, movable in rotation relative to each other along a main axis XX visible in particular in figures 1 and 2.

[0047] The first set includes a 140 multi-lobe cam.

[0048] The second assembly comprising a cylinder block 120 having a plurality of housings in which pistons 130 slide, each piston 130 being positioned in a housing. The adapter 1 is configured so that in operation, the pistons 130 follow the cam 140. Thus, the pistons 130 perform reciprocating movements in their respective housings depending on the geometry of the cam 140, while remaining in contact with the cam.

[0049] Depending on the architecture chosen, a casing 110 may be integral in rotation with the first assembly or the second assembly.

[0050] The hydraulic motor 10 rotates the hydraulic pump 20. However, the adapter does not have the function of delivering torque. Thus, the adapter 1 typically does not have a mechanical torque input or output shaft. In other words, the adapter 1 does not have a torque input or output. Pressure and flow are applied at the input, and pressure and flow are delivered at the output.

[0051] According to one example, in particular in the case where the cylinder capacity C1 of the hydraulic motor 10 is greater than the cylinder capacity C2 of the pump 20 (C1>C2), the inlet of the hydraulic pump 20 can be connected to the discharge of the hydraulic motor 10. Part of the discharge of the hydraulic motor 10 thus supplies the inlet of the hydraulic pump 20. Figure 3 shows a hydraulic diagram equivalent to such an assembly.

[0052] Thus, the pressure at the inlet of the hydraulic pump 20 is equal to the pressure at the outlet of the hydraulic motor 10.

[0053] A line 15 typically extends from the internal volume of the casing to provide the boosting of the pump 20, so that the pressure Pp at the inlet 22 of the pump 20 is greater than a minimum boosting pressure required for the pump 20. Alternatively, the boosting is not necessary, but the system includes means for ensuring that the pressure at the inlet 22 of the pump 20 is greater than the minimum pump boosting pressure, for example a restriction made on a drain of the internal volume of the casing which returns to the reservoir.

[0054] Alternatively, particularly in the case where Cl > C2, the inlet of the hydraulic pump 20 and the inlet of the hydraulic motor 10 are common. Thus, the hydraulic pump 20 is supplied at a pressure PI. Figure 4 shows a hydraulic diagram equivalent to such an assembly.

[0055] The adapter block 100 thus comprises a first assembly and a second assembly, movable in rotation relative to each other along the main axis XX.

[0056] The first assembly comprises a cam 140 and a casing 110. The second assembly comprises a cylinder block 120 having a plurality of housings 123 in which pistons 130 slide, said pistons being positioned opposite the cam 140 and being adapted to be kept in contact with the cam 140 during operation of the adapter block 100.

[0057] The adapter block 100 is configured to selectively perform a pressure adaptation function. Depending on the operating mode, it thus makes it possible to perform a pressure raising, amplifying or reducing function (and therefore in this case we can also speak of a flow elevator). Thus for an initial pressure PI at the inlet of the adapter block 100, the adapter block 100 will deliver a pressure P2 such that P2 different from PI

[0058] As previously described, the adapter block 100 typically comprises a first hydraulic machine 10 and a second hydraulic machine 20 rotatably connected, and configured such that one has a pump operation and the other has a motor operation. The first hydraulic machine 10 and the second hydraulic machine 20 are typically formed in the same cylinder block, defining disjoint sub-assemblies corresponding to lobes or portions of lobes of the cam 140. The disjoint sub-assemblies can also correspond, for example, to the lower chambers 123 and to the upper chambers formed by the stepped pistons with their cylinders.

[0059] By way of example, it may be considered that the first hydraulic machine 10 has a motor operation, and that the second hydraulic machine 20 has a pump operation, the hydraulic motor and the hydraulic pump thus defined typically having identical or distinct cylinder capacities. By rotationally fixed, it is meant here that the first hydraulic machine 10 and the second hydraulic machine 20 are rotationally coupled, and therefore rotate jointly. This rotational coupling may be achieved for example by coupling the two hydraulic machines 10 and 20 on the same shaft, by connecting them by a rigid mechanical link, or where appropriate by forming them in the same cylinder block, for example in the cylinder block 120.

[0060] In the example illustrated in Figure 1, the pressure adapter has a structure of the type as presented previously with reference to Figure 3 where the displacement C1 of the hydraulic motor 10 is greater than the displacement C2 of the pump 20 (C1>C2). Thus, three conduits open at the first interface 102 of the adapter block 100. The adapter block 100 typically comprises a plurality of valves and flaps adapted to control the supply of the different chambers 123. It is understood that valves, flaps or flaps can be integrated in the adapter block 100 or in the supply block 200

[0061] The power supply unit 200 comprises internal conduits opening onto its second interface 204 and adapted to be connected to the conduits of the adapter unit 100 opening onto the first interface 102 of the adapter unit.

[0062] For illustration purposes, FIG. 5 shows a hydraulic diagram illustrating an exemplary structure of the power supply unit 200.

[0063] This figure shows the various internal conduits in the power supply unit 200 and the adapter unit 100.

[0064] Concerning the adapter block 100, 112 denotes the conduit opening onto the first interface 102 and connected to the first orifice 12 of the first hydraulic machine 10. 122 denotes the conduit opening onto the first interface 102 and connected to the second orifice 14 of the first hydraulic machine 10 and to the first orifice 22 of the second hydraulic machine 20, this conduit 122 being equivalent to the line 15 described with reference to FIG. 3. 132 denotes the conduit opening onto the first interface 102 and connected to the second orifice 24 of the second hydraulic machine 20. These different conduits may be provided with valves or flaps, for example to allow them to be closed. It is understood that the valves or flaps may be integrated into the adapter block 100 or into the power supply unit 200.

[0065] The supply unit 200 comprises a primary orifice 210 and a secondary orifice 220, typically forming a supply and a discharge for a given direction of operation. For purposes of illustration, it is considered that the primary orifice 210 is a supply conduit, and that the secondary orifice 220 is a discharge conduit. It is understood that this embodiment is not limiting, and that the primary orifice 210 may be a discharge conduit and the secondary orifice 220 may be a supply conduit. In the illustrated example, the supply unit 200 also comprises a drain orifice 250, adapted to be connected for example to a drain conduit.

[0066] The primary orifice 210 and the secondary orifice 220 emerge from the power supply unit, typically in the radial direction relative to the axis XX.

[0067] The primary port 210 is typically connected to a first valve 230.

[0068] The power supply unit 200 comprises a first conduit 212 opening onto its first interface 202. This first conduit 212 is connected to a second valve 240. The second valve 240 is adapted to connect the first conduit 212 either to the first valve 230, or to a conduit 234 opening onto the second interface 204 of the power supply unit 200.

[0069] The first valve 230 is adapted to connect the primary orifice 210 either to a conduit 214 opening onto the second interface 204 of the power supply unit 200, or to the second valve 240. It is understood that this example is not limiting, and that the power supply unit 200 may comprise one or more valves performing the intended functions.

[0070] In the example illustrated, the secondary orifice 220 is connected to conduits internal to the power supply unit 200 opening onto the first interface 202 of the power supply unit 200 and onto the second interface 204 of the power supply unit 200. 222 denotes the second conduit opening onto the first interface 202 of the power supply unit 200 and connected to the secondary orifice 220, and 224 denotes the conduit opening onto the second interface 204 of the power supply unit 200 and connected to the secondary orifice 220.

[0071] When the power supply 200 and the adapter block 100 are assembled, the conduits 214 and 112 are in fluid connection. The conduits 224 and 122 are in fluid connection, and the conduits 234 and 132 are in fluid connection.

[0072] The valves 230 and 240 make it possible to connect the primary orifice 210 to the first conduit 212 opening onto the first interface 202 of the power supply unit 200 via the adapter unit 100 or not. Thus, the pressure adapter within the adapter unit 100 can be selectively engaged or not, typically via a piloting of the valves 230 and / or 240 present within the power supply unit 200. The valves can typically be piloted by a controller (the command can then be transmitted for example electrically, mechanically or hydraulically), or be configured to carry out piloting as a function of the pressure.

[0073] Alternatively, it is possible to envisage a power supply 200 which only allows a configuration where the pressure adapter 100 is engaged.

[0074] The kit 1 as proposed comprising the power unit 200 and the adapter unit 100 thus makes it possible to integrate a pressure adapter into a hydraulic device in a modular manner. The pressure adapter can be selectively engaged or not. In addition, different types of pressure adapters can be associated with the power unit 200, which in particular makes it possible to offer different adapter units 100 with different displacement ratios between the hydraulic machines of the pressure adapter while maintaining an identical power unit 200.

[0075] The kit 1 as proposed may also comprise a distribution block 300 and a hydrocouple block 400. Figure 6 shows such an exemplary embodiment.

[0076] The distribution block 300 comprises a first interface 302, and a second interface 304. The second interface 304 of the distribution block 300 is typically adapted to be assembled to the first interface 202 of the power supply block 200.

[0077] The hydrocouple block 400 comprises a first interface 402, and a second interface 404. The second interface 404 of the hydrocouple block 400 is typically adapted to be assembled to the first interface 302 of the distribution block 300.

[0078] The first interface 402 of the hydrocouple block 400 is for example adapted to be coupled to a member, for example a wheel hub or an axle, or more generally a member adapted to receive or supply torque.

[0079] The hydrocouple block 400 has a known structure of a hydraulic machine, here a radial piston hydraulic machine. The hydrocouple block 400 can in particular define a hydraulic pump or a hydraulic motor.

[0080] The hydrocouple block 400 comprises a first assembly and a second assembly, movable in rotation relative to each other along the main axis XX.

[0081] According to one example, the first assembly comprises a multi-lobe cam 440, typically secured to a casing 410, and the second assembly comprises a cylinder block 420 having a plurality of housings 423 in which slide pistons 430, each piston 430 being positioned in a housing 423 of the cylinder block 420 so as to define a plurality of chambers and being adapted to be held in contact with the cam 440 during operation. The cylinder block 420 is rotationally secured to a shaft 450 adapted to transmit a torque. In the example illustrated in FIG. 6, the shaft 450 forms a wheel support.

[0082] Depending on the desired operating mode, the hydrocouple block 400 may be powered by activating or not activating the pressure adapter, or alternatively, the hydrocouple block 400 may deliver a pressure which is then modulated or not by the pressure adapter.

[0083] For example, in the case of a hydrocouple block 400 which is a pressure consumer such as a hydraulic motor or a cylinder, the primary orifice 210 is supplied with pressure, and the valves 230 and 240 then make it possible to supply the hydrocouple block 400 directly or via the adapter block 100.

[0084] For example, in the case of a hydrocouple block 400 performing a hydraulic pump function, the secondary port 220 makes it possible to supply the kit 1 with hydraulic fluid. The hydraulic pump then delivers a pressure via the first conduit 212, which is then selectively modulated or not by the adapter block 100 before being discharged via the primary port 210.

[0085] In the illustrated example, a rolling bearing 620 is formed in a bearing block 600 which includes a bearing housing 610 and two tapered roller bearings positioned between the shaft 450 and the bearing housing 610. Alternatively, the rolling bearing 620 may be integrated into the hydrocouple block 400.

[0086] The kit 1 as proposed may also comprise a brake block 500 adapted to selectively prevent or slow down rotation between the first assembly and the second assembly. The brake block 500 comprises a brake housing 510 and two sets of discs forming a stack 520, one secured to the shaft 450 and the other secured to the brake housing 510, as well as means adapted to apply a clamping force to this stack 520. The application of the clamping force tightening will generate a braking effect due to friction between the discs of the 520 stack.

[0087] In the illustrated example, the brake block 500 is positioned between the bearing block 600 and the hydrocouple block 400. It is understood that this embodiment is not limiting, the positions of the brake block 500 and the bearing block 600 can be reversed. In addition, these different blocks can be grouped into a single block. For example, the hydrocouple block 400 can integrate the brake and / or the bearing. The bearing block 600 can integrate the brake, or vice versa.

[0088] The operation and structure of such a hydraulic machine and brake are known.

[0089] The distribution block 300 is adapted to be positioned between the hydrocouple block 400 and the power block 200. The distribution block 300 performs a hydraulic distributor function for the hydrocouple block 400, being powered by the power block 200.

[0090] The distribution block 300 as shown comprises a distributor housing 310 and a distributor 320 internal to the distributor housing 320. The distribution housing 310 has internal conduits adapted to be connected in particular to the conduits of the power supply block 200 (in particular the conduit connected to the drain orifice 250 and conduits connected to the first orifice 210 and to the second orifice 220 directly or via the adapter block 100) when the distribution block 300 and the power supply block 200 are assembled, as well as conduits adapted to be connected to conduits and volumes internal to the hydrocouple block 400 when the distribution block 300 and the hydrocouple block 400 are assembled, and conduits connected to the distributor 320.

[0091] The distributor 320 has a conventional structure, with a plurality of grooves for organizing the fluid connections between the different grooves and conduits. The distributor 320 as presented comprises internal conduits adapted to be in fluidic relation with conduits supplying the chambers of the cylinder block 420. The interface between the cylinder block 420 and the distributor 320 typically forms a part of the second interface 404 of the hydrocouple block 400.

[0092] The various elements of kit 1 as proposed can be assembled along the main direction XX so as to form a hydraulic device.

[0093] More precisely, considering the example illustrated in Figure 6, it is thus possible to successively assemble in the main direction the bearing block 600, the brake block 500, the hydrocouple block 400, the distribution block 300, the power supply block 200 and the adapter block 100.

[0094] Each of these blocks can be replaced by another block fulfilling the same function but having different capacities / characteristics, or possibly closing an interface.

[0095] Depending on the chosen application and the desired properties of the hydraulic machine, the various blocks can be replaced individually, keeping all or part of the other blocks unchanged.

[0096] For example, for the same configuration with a distribution block 300, a power block 200 and an adapter block 100, different models of hydrobase blocks 400 can be used for different applications. For example, different hydrobase blocks 400 can be proposed with different displacements, or for example hydrobases with radial or axial pistons, or hydrobases with or without an integrated brake. In the case of a hydraulic machine with axial pistons, the cam 440 is then replaced by an inclined plate.

[0097] The hydrocouple block can also be replaced by any type of hydraulic consumer, including a hydraulic cylinder.

[0098] The application to a cylinder is particularly advantageous insofar as the use of a pressure adapter makes it possible to amplify the pressure, which therefore makes it possible to reduce the volume required for the internal chambers of the cylinder. In fact, to obtain a certain thrust from the cylinder, it is necessary to modulate either the pressure which supplies the cylinder or to modulate the section on which the hydraulic fluid under pressure pushes (according to the relationship F=P*S where F is the force in Newton, P the pressure in Pascal and S the section in m 2 ).

[0099] Figures 8 and 9 schematically illustrate such an application. Figure 8 represents an assembly comprising a jack 700 associated in particular with a kit 1 as defined previously and represented in Figures 1 and 5 comprising a power supply unit 200 and an adapter unit 100.

[0100] The cylinder 700 comprises a body 710 and a rod 720 movable in translation relative to the body 710. Figure 8 schematically shows a sectional view of a section of the body 710 of the cylinder 700. This figure shows two concentric walls; an external wall 712 and an internal wall 714. The internal wall 714 delimits a cylinder of the cylinder, that is to say the internal volume of the cylinder 700 which in combination with the rod 720 forms a first chamber of the cylinder 700.

[0101] The association of the adapter block 100 makes it possible to reduce the dimensions of this first chamber of the cylinder 700 to obtain performances similar to those of a conventional cylinder which does not include such an adapter block 100. Depending on the adapter block 100 used, the external diameter of the first chamber of the cylinder 700 can be reduced by around 30%.

[0102] The outer wall 712 surrounds the inner wall 714 and therefore surrounds the first chamber of the cylinder 700. This outer wall 712 forms a fluid reservoir, typically an oil reservoir, around the first chamber of the cylinder 700. The outer wall 712 typically has a diameter equivalent to the diameter of a cylinder which has equivalent characteristics without being associated with a kit 1 such as proposed comprising an adapter block 100.

[0103] The use of a kit 1 as proposed thus makes it possible to reduce the size of a hydraulic cylinder thanks to the pressure adaptation function of the adapter block 100, which makes it possible to reduce the size of the cylinder, and thus to integrate a fluid reservoir for the cylinder directly into the body of the cylinder. The invention applied to a cylinder can thus allow a gain in size equivalent to the fluid reservoir of a conventional cylinder.

[0104] Kit 1 as proposed thus offers a modular design allowing the integration of a pressure adapter into a hydraulic consumer such as a hydraulic motor or cylinder, or to a pressure source such as a hydraulic pump. Optionally, the kit 1 also includes a hydraulic pump 900, and an electric motor 800 adapted to drive said hydraulic pump 900 in rotation. Figure 10 represents such an embodiment. This figure shows the kit 1 comprising: - the 200 power supply, - the adapter block 100, This kit 1 being hydraulically connected to a hydraulic consumer which is the cylinder 700 already presented with reference to figures 8 and 9. This Kit 1 also being hydraulically connected for its fluid supply to a hydraulic pump 900 itself mechanically connected to an electric motor 800 for its actuation.

[0105] In addition, the individual blocks can be manufactured and tested independently, which is advantageous from an industrial perspective.

[0106] Kit 1 as proposed makes it possible in particular to independently supply a pressure adapter and its power supply, or a hydraulic machine as a whole integrating a pressure adapter.

[0107] Alternatively, the adapter block 100 can be removed and replaced by a cover closing the conduits opening into the second interface 202 of the power supply block 200.

[0108] In the embodiments shown in Figures 1 and 6, the various interfaces between the blocks are shown as being radial or substantially radial relative to the main axis XX.

[0109] It is understood that this embodiment is not restrictive, the different interfaces can take different configurations, radial or not with respect to the main axis XX.

[0110] Figure 7 shows an exemplary embodiment in which the power supply unit 202 has a first interface 202 adapted to be inserted into the distribution block 300 so as to form a support for the distributor 320. A portion of the power supply block 200 is thus inserted into the distribution block 300 during assembly.

[0111] Figure 11 shows an example of application of a kit 1 as described for a vehicle.

[0112] This figure shows a kit 1 as proposed also comprising a distribution block and a hydraulic pump providing a pressure supply. This hydraulic pump can for example form the hydrobase 400 as described above, and is typically driven in rotation by a motor 800 such as an electric motor or a thermal engine.

[0113] This assembly comprising kit 1 and motor 800 forms a power supply assembly that can be integrated into a vehicle, for supplying different hydraulic components of the vehicle. In Figure 11, the power supply assembly that supplies two hydraulic motors MH is thus schematically represented, each hydraulic motor MH rotating a component such as a wheel R of the vehicle.

[0114] The supply assembly as proposed thus makes it possible to produce a pressure supply capable of delivering a variable and adjustable pressure thanks to the adapter block 100 which can be selectively engaged and coupled directly to the hydraulic pump, while maintaining reduced size and weight.

[0115] Although the present invention has been described with reference to specific exemplary embodiments, it is obvious that modifications and changes may be made to these examples without departing from the general scope of the invention as defined by the claims. In particular, individual features of the various illustrated / mentioned embodiments may be combined in additional embodiments. Therefore, the description and drawings should be considered in an illustrative rather than restrictive sense. [0116JII is also obvious that all the characteristics described with reference to a method are transposable, alone or in combination, to a device, and conversely, all the characteristics described with reference to a device are transposable, alone or in combination, to a method.

Claims

Claims

1. Kit (1) for producing a hydraulic apparatus, comprising a power supply unit (200) and an adapter unit (100), the power supply unit (200) comprising a power supply housing comprising a first interface (202), and a second interface (204) adapted to be assembled to the adapter unit (100), the adapter unit (100) comprising an adapter housing comprising a first interface (102) adapted to be assembled to the power supply unit (200), wherein - the adapter block (100) comprises a first assembly and a second assembly, rotatable relative to each other along a main axis, the first assembly comprising a cam (140), the second assembly comprising a cylinder block (120) having a plurality of housings (130) in which pistons (130) slide, each piston (130) being positioned in a housing (123), the pistons (130) and housings (132) defining a hydraulic pump and a hydraulic motor, and internal conduits adapted to be connected to the power unit (200) via the first interface (102), - the power supply unit (200) comprises a first port (210), a second port (220), and a valve (230, 240), wherein the second port (220) is fluidically connected to the first interface (202) of the power supply unit (200), the valve (230, 240) is adapted to, in a first configuration, connect the first port (210) to the adapter block (100) via the second interface (204) of the power supply unit (200), and the adapter block (100) to the first interface (202) of the power supply unit (200).

2. Kit (1) according to claim 1 wherein the valve (230, 240) is adapted to, in a second configuration, connect the first orifice (210) to the first interface (202) of the power supply unit (200).

3. Kit (1) according to claim 2, wherein the power supply unit (200) has a conduit (212) opening at its second interface (204), and wherein the valve (230, 240) is configured to, in the second configuration, connect the first port (210) to said conduit (212) via conduits internal to the power supply unit (200), and in the first configuration, connect the first port (210) to said conduit (212) via the adapter block (100).

4. Kit (1) according to one of claims 1 to 3, comprising a distribution block (300), the distribution block (300), comprising a first interface (302) and a second interface (304) adapted to be assembled to the first interface (202) of the power supply block (200), in which the distribution block (300) comprises a plurality of conduits opening at the first interface (302) of the distribution block (300) and at the second interface (304) of the distribution block (300), adapted to provide an intake and a discharge of fluid at the first interface (302) of the distribution block (300) by the power supply block (200).

5. Kit (1) according to claim 4, comprising a hydrocouple block (400) the hydrocouple block (400), comprising a first interface (402) and a second interface (404) adapted to be assembled to the distribution block (300), the hydrocouple block (400) comprises a first assembly and a second assembly, movable in rotation relative to each other along a main axis (XX), the first assembly comprising a cam (440) or an inclined plate, the second assembly comprising a cylinder block (420) having a plurality of housings (423) in which pistons (430) slide, each piston (430) being positioned in a housing (423) so as to define a plurality of chambers, the hydrocouple block (400) having internal conduits opening at the second interface (404) of the hydrocouple block (400),

6. Kit (1) according to claim 5, further comprising a brake block (500), comprising a brake (500), adapted to selectively apply a force opposing the relative rotation between the first assembly and the second assembly of the hydrocouple block (400), said brake block being adapted to be assembled to an interface of the hydrocouple block (400).

7. Kit (1) according to one of claims 5 or 6, wherein the hydrocouple block (400) defines a radial piston hydraulic machine, wherein the cylinder block (420), the pistons (430) and the cam (440) are configured so that the pistons (430) perform a reciprocating movement radially relative to the main axis (XX) during the relative rotation between the first assembly and the second assembly.

8. Kit (1) according to one of claims 5 to 7, comprising a bearing block (600) having a first bearing interface adapted to be assembled to the first interface of the hydrocouple block (400), the bearing block (600) comprising a (610) casing, a shaft (450) extending along the main axis (XX), and bearings (460) defining a bearing between the casing (610) and the shaft (450), in which the shaft (450) is adapted to engage in the cylinder block (420) of the hydrocouple block (400), so as to be rotationally integral with the cylinder block (420) of the hydrocouple block (400).

9. Kit (1) according to claim 8 taken in its dependence on claim 7, in which the brake block (500) is positioned between the bearing block (600) and the hydrocouple block (400) along the main axis (XX).

10. Kit (1) according to one of claims 1 to 9, in which the power supply unit (200) and the adapter unit (100) are assembled successively along the main axis (XX).

11. Kit (1) according to one of claims 5 to 10, in which the hydrocouple block (400), the distribution block (300), the power supply block (200) and the adapter block (100) are assembled successively along the main axis (XX).

12. Kit () according to one of the preceding claims, in which the pistons (130) and housings (132) of the adapter block (100) define a hydraulic pump and a hydraulic motor of distinct displacements.

13. Assembly comprising a kit (1) according to claim 1 hydraulically connected with a hydraulic consumer, the hydraulic consumer typically being a component from the following list: a hydraulic motor, a hydraulic cylinder, a part of a hydraulic circuit comprising one or more hydraulic components.

14. Assembly comprising a kit (1) according to claim 1 hydraulically connected with a hydraulic consumer, the hydraulic consumer being a hydraulic cylinder (700), comprising a cylinder body (710) and a cylinder rod (720) slidably mounted relative to the body, the body (710) comprising a first chamber delimited by an internal wall (714), and comprising a fluid reservoir formed around the first chamber and delimited by an external wall (712).

15. An assembly comprising a kit (1) according to claim 1 hydraulically connected with a hydraulic consumer, the hydraulic consumer being a hydraulic cylinder (700), comprising a cylinder body (710) and a cylinder rod (720) slidably mounted relative to the body, the body (710) comprising a first chamber delimited by an internal wall (714), and comprising a fluid reservoir formed around the first chamber and delimited by an external wall (712), said assembly further comprising a hydraulic pump (900) adapted to supply fluid to the kit, and an electric motor adapted to rotate said hydraulic pump (900).

16. Vehicle comprising: - a kit (1) according to claim 5, in which the hydrocouple block (400) defines a hydraulic pump, - a hydraulic circuit comprising at least one hydraulic component hydraulically connected to the kit.

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