DEVICE FOR ENERGY RAISED FROM THE KINETIC ENERGY OF MOTOR VEHICLES

Description

[0001] The invention relates to a device for extracting energy from the kinetic energy of motor vehicles according to the preamble of claim 1.

[0002] Such a device became known through EP 1 149 242 B1, which goes back to the same applicant.

[0003] In this known device, a number of compressible tubes, aligned with their longitudinal axes in the direction of travel, are provided in a horizontal frame embedded in the roadway and are compressed by the weight of the vehicle tire rolling over them.

[0004] The compression pressure of the vehicle tire on the elastomeric hoses, which change in cross-section, induces a specific pressure surge in the respective hose and the medium it contains. This pressure surge is fed via suitable check valves to an energy generation machine, which could be, for example, a pneumatically driven generator, a hydraulically driven generator, a turbine, or other energy generation devices capable of producing hydraulic, mechanical, or electrical energy from the pressure surge of a medium.

[0005] A disadvantage of the device according to EP 1 149 242 B1 is its low energy efficiency, which is partly due to the fact that the hoses are additionally compressed laterally during vertical compression and deflect in a horizontal plane. This results in undesirable friction losses and a reduction in service life because a cracking stress is generated in the area of ​​the kinks running in the horizontal plane, leading to premature breakage of the hoses. This is also because the known pressure body was designed as compressible hoses clamped in a frame, and the arrangement was only covered by a thin, film-like cover plate.

[0006] The compression efficiency of the hoses shown there was not optimal because the pressure-inducing vehicle tire acted directly on the hoses without the interposition of a transmission element, namely only via a cover film, which led to unfavorable pressure transmission to the hose assembly. This was especially true when the vehicle tire acted on the hose assembly in a vertical plane that was offset and not aligned with it.

[0007] Because of the special arrangement of the check valves shown there, there was also an undesirable dead space of air, which impaired the degree of compression of the displaced medium.

[0008] The subject matter of US patent 4,409,489 B1 discloses another device for generating energy in road traffic, which, however, has the same disadvantages, namely that the weight of the motor vehicle tire acts directly on the compressible hoses, which leads to a heavy strain on the hoses with a low energy recovery rate.

[0009] Although this printed document includes an additional shell intended to improve compression of the hoses, it contains two opposing shells whose lateral edges dig into the compressible elastomeric profile, leading to a reduction in service life.

[0010] However, the hose has an oval cross-section, which resulted in low compressibility and reduced efficiency.

[0011] WO 2006 / 106 399 A1 discloses a device for extracting energy from the kinetic energy of motor vehicles according to the preamble of claim 1. A similarly functioning device is known from WO 2006 / 120 645 A2.

[0012] DE 101 24 772 A1 discloses a device with a roof-shaped cover which folds down when driven over by a motor vehicle and transmits the force via a support to a tubular pressure body.

[0013] The invention is therefore based on the objective of further developing a device for generating energy from the kinetic energy of motor vehicles in such a way that a higher efficiency can be achieved with a significantly longer service life of the elements used.

[0014] To solve the problem posed, the invention is characterized by the technical teaching of claim 1.

[0015] The cover plate is designed as an elastically bendable bending plate, on the underside of which at least one vertically movable pressure stamp is arranged to transmit the load, which engages in the recess of the concrete trough and acts on the top of a compressible pressure body arranged there.

[0016] The compressible pressure body is designed as an elastically prestressed membrane.

[0017] The drivable surface of the energy generation element therefore consists of an elastically deformable bending plate that acts directly on an underlying pressure stamp, which acts vertically on the top of the pressure body, which is preferably designed as a bubble-shaped membrane that can be displaced into a pressure chamber formed by a recess in a concrete trough.

[0018] The advantage of the given technical teaching is that a forced pressure generation is achieved by using an elastically bendable bending plate as a bearing surface for a rolling motor vehicle tire, which directly transfers the weight of a vehicle axle to a pressure piston below, which pressure piston is guided to be displaceable in the vertical direction and which acts directly against a membrane prestressed against the pressure piston, which can be displaced into a pressure chamber on the side of the concrete trough.

[0019] The pressure stamp can extend across the entire width of the device and thus transfer the vehicle weight of the two tires of an axle driving over it.

[0020] In another version, two independently operating pressure stamps can also absorb the vehicle weight of the two tires of a vehicle axle.

[0021] The positive guidance between the elastically bendable bending plate and the pressure die arranged below it eliminates the disadvantage of the pressure elements being able to deflect laterally, as was the case with the prior art. The invention provides a direct vertical force transmission without any lateral bending or frictional forces that could impair the efficiency of the device.

[0022] By using a membrane clamped on one side, which is sealed on all sides around its circumference and clamped in a holding frame, the advantage is that the membrane is not subjected to kinking stress and does not form any fracture edges that would lead to a reduction in service life.

[0023] Various fluids are used as the medium, which can be incompressible or compressible.

[0024] In a first embodiment, the compressible medium can be air or gas, in which case the air or gas is configured as the compressible medium. For example, a noble gas or an inert gas that does not attack the membrane can also be used.

[0025] In another embodiment, it may be provided that a non-compressible fluid is used as the fluid, such as hydraulic oil, water or other carrier media.

[0026] All embodiments have in common that a high efficiency is achieved by transferring the weight force of a motor vehicle tire driving over the bending plate directly and with low friction to a vertically movable pressure stamp underneath, which is guided in its vertical movement and presses with its underside onto the bendable surface of the membrane.

[0027] The membrane is thus forced into the recess formed in a concrete trough, which serves as a pressure chamber. At least one outlet pipe and one inlet pipe, each carrying the medium, open into the pressure chamber, and both pipes are sealed by opposing check valves.

[0028] This ensures that when the diaphragm deforms into the pressure chamber, its volume is almost completely displaced. The pressure peak generated at the inlet of the outlet pipe is introduced into an associated pressure accumulator through the opening of the check valve located there. Such a pressure accumulator can be a tank or a directly connected machine, such as a flow generator, a turbine, an air motor, a hydraulic motor, a rotary piston or reciprocating piston machine, or the like.

[0029] It is also possible to design such a motor as a rotary piston motor, whereby the rotary piston motor is driven by the pressure pulses of the pressure medium released from the outlet pipe and thus drives, for example, an electric generator.

[0030] The advantage of the measures according to the invention is therefore the relatively low-friction transmission of the weight force of a motor vehicle tire via a bendable bending plate, which acts directly on the two pressure stamps underneath, which are guided vertically movable with low friction and which act directly on the surface of a membrane directed in the opposite direction.

[0031] The membrane is preferably under a defined pre-pressure, which means that the pre-pressure in the membrane must first be overcome by the weight of the tire and the membrane always returns to its domed basic position when it has been forced into the pressure chamber.

[0032] Instead of using a one-sided, circumferentially sealed membrane, the underside of which is formed by the surface of a pressure chamber carrying the working medium, a second embodiment may provide that the bottom side of the pressure chamber is sealed by a second membrane in a medium-tight manner.

[0033] However, the use of a single-layer membrane is preferred because it has been found that only a single-layer membrane can prevent creases and cracks, which are unavoidable with hoses.

[0034] In a preferred embodiment, the pressure profile on the underside of the pressure stamp is convex and presses against the concave surface of the opposite membrane, wherein the membrane is pressed into a receiving profile in the concrete trough and this receiving profile is also preferably concave with approximately the same profile shape as the underside of the pressure stamp.

[0035] The convex pressure profile of the respective pressure stamp displaces the membrane gap-free and form-filling into the concave receiving profile in the concrete trough, with the two profiles complementing each other.

[0036] Overall, the energy generation device according to the present invention can be described as an energy transfer plate because an energy conversion takes place from the kinetic energy of vehicle tires into the pressure energy of a pressure medium. The generated pressure energy acts on a suitable energy converter, which selectively or cumulatively generates electrical, pneumatic, hydraulic, or potential mechanical energy.

[0037] The energy converter is located in a suitable machine room, which converts the resulting pressure energy of the working medium into suitable, transmittable and storable energy.

[0038] In a first embodiment, it is provided that the energy converter is designed as a rotary motor, hydraulic motor, pneumatic motor or the like, whereby these motors can drive a suitable electric generator.

[0039] In another embodiment, it may be provided that the pressure energy introduced into the engine room is introduced into a pressure accumulator located there.

[0040] In a second embodiment, it can also be provided that such a pressure storage device is arranged under the energy transfer plate, i.e. in the substructure of the road.

[0041] Such a pressure accumulator can be large-volume and extend over a longer stretch of road and a greater installation depth. It can therefore absorb and store the energy generated by the energy transfer plate for a longer period and release it again as needed.

[0042] Finally, it is noted that instead of generating electrical energy, mechanical energy can also be generated in the form of lifting a suitable mechanical weight, thereby generating potential energy.

[0043] Energy conversion can also take place in the form of a pumped storage power plant, which means that the pressure surge of the introduced working medium directly acts on the pumps of a pumped storage power plant.

[0044] Finally, it should be noted that the invention is not limited to a specific length of the membranes used.

[0045] Typical lengths of energy transfer plates are about 10 meters or more, but the invention is not limited to this.

[0046] The invention is explained in more detail below with reference to drawings illustrating only one embodiment. Further essential features and advantages of the invention will become apparent from the drawings and their description.

[0047] They show: Figure 1: Schematic top view of a device for generating energy. Figure 2: The same device as in Figure 1Figure 3 schematically depicts the device with an illustration of the overlapping joint of overlapping bending plates arranged one behind the other in the direction of travel. Figure 1 In relaxed state, front view (perpendicular to the direction of travel) Figure 4: the device according to Figure 3 In the loaded state, in front view (perpendicular to the direction of travel), Figure 5: a modification of the device according to Figure 1 with differently shaped membranes that correspond to the invention Figure 6: a modification of the embodiment according to the invention Figure 5 Figure 7a: a partial section through the device in the unloaded state. Figure 7b: a partial section through the device after Figure 7a in a loaded state with modification of various individual parts Figure 8a: one opposite Figure 7a, 7b modified embodiment Figure 8b: the loaded state according to Figure 8aFigure 9: A modified embodiment compared to the previously mentioned embodiments, in which the membrane is replaced by a compressible hose. Figure 10: The longitudinal connection area between adjoining bending plates and pressure rams. Figure 11: Schematic representation, not part of the invention, of a compressible hose when driven over under load. Figure 12: The same representation as Figure 11 with a modification regarding the check valves Figure 13: a further modification compared to Figure 11 and 12 Figure 14: Schematic representation of the pressure-time diagram. Figure 15: Schematic representation of the membrane's shape and its clamping in a holding frame. Figure 16: Perspective view of the pressure stamp in two different versions. Figure 17: Schematic representation of various energy conversion and storage options. Figure 18: Top view of an energy transfer plate.

[0048] In Figure 1 and Figure 2 The diagram shows a schematic top view of a device for energy generation. It is merely a schematic representation of a U-shaped, upward-opening concrete trough 1, which is embedded in a roadbed 2. The term "concrete trough" used here is not limited to the material "concrete". Any trough-shaped, upward-opening body can be embedded in the roadway, regardless of the material it is made of. The term "concrete trough" is therefore used to represent all trough-shaped bodies.

[0049] A bending plate 3 is arranged on the concrete trough 1, covering the upwardly open concrete trough 1. The bending plate 3 is shown in dashed lines in Figure 1 depicted.

[0050] The Figure 2shows that in the direction of travel 11, the bending plates 3a, 3b lying one behind the other form an overlapping joint 4 in order to enable a smooth passing over the bending plates 3 in the direction of travel 11.

[0051] In Figure 1 The figure schematically depicts a motor vehicle, which is shown only with its tires 7 and its two axles 8, wherein the tires 7 of one axle simultaneously drive onto the bending plate 3, and the tires of the front axle and then the tires of the rear axle elastically compress the bending plate. It is preferred if the length of the bending plate 3 in the direction of travel is greater than the axle spacing of conventional road vehicles.

[0052] However, in another embodiment it may also be provided that the length of the bending plate 3 in the direction of travel is shorter than the axle spacing of road vehicles.

[0053] The width of the bending plate 3 - perpendicular to the direction of travel - should be greater than the tire spacing (distance of the tire contact patch) of an axle of road-going motor vehicles.

[0054] In the exemplary embodiment according to Figure 1 Two parallel pressure stamps 5, 6 are provided under a bending plate 3 covering the entire surface of the concrete trough 1, which absorb the deflection of the bending plate 3 and transfer it to underlying membranes 9, 9a, 9b.

[0055] This is in the Figures 3 and 4 shown where it can be seen that the respective pressure piston 5, 6 can be displaced into a recess 12 in the concrete slab 1 and that a pressure-prestressed, convexly curved membrane is arranged in this recess 12, which is displaced downwards in the direction of arrow 22 into the pressure chamber 15 of the concrete trough 1 when compressed by the pressure piston 5, 6, as shown in Figure 4 is shown.

[0056] At the Figures 3 and 4 Furthermore, it is essential that the pressure-emitting side of the respective pressure stamp 5, 6 has a concave pressure profile 65, which is opposite to and complementary to the convex pressure-receiving profile of the respective membrane 9.

[0057] Furthermore, the bottom side of the concrete trough 1 is also formed with a concave receiving profile 66, so that the convex pressure profile 65 of the respective pressure stamp 5, 6 sinks into the receiving profile 66 on the bottom side of the concrete trough 1 without play or dead space, as shown in Figure 4 is shown.

[0058] The respective bending plate 3 is clamped laterally to the side walls of the concrete plate 1 in a direction parallel to the direction of travel and can either be designed as a flat bending plate 3 or also be convexly curved.

[0059] It is important that the respective pressure stamp 5, 6 is attached directly under the bending plate 3 with lateral projections 14 is guided slidably in the recess 12 of the concrete trough 1 and thus performs a movement in the direction of arrow 22 into the recess 12 with low friction losses.

[0060] This causes the convexly curved membrane 9 to be deformed downwards in a vertical direction, and the volume of the pressure chamber 15 to decrease abruptly, and the working fluid located there is abruptly displaced.

[0061] The working fluid (medium) present in the pressure chamber 15 is thus introduced via the outlet pipe 16 into a tank or other pressure accumulator (not shown) by overcoming a spring-loaded check valve 18, or acts directly on a power machine located there.

[0062] When the diaphragm 9 is returned to its rest position, the working fluid is drawn back into the pressure chamber 15 via the inlet pipe 17. The spring-loaded check valve 18 is located in the inlet pipe 17 and acts in the opposite direction to the previously mentioned check valve in the outlet pipe 16. In this way, the medium is drawn from a tank (not shown) through the inlet pipe 17. This drawing-in can occur solely due to the elastic deformation force of the diaphragm.

[0063] In a further development, however, it may be provided that the return of the membrane 9, 9a, 9b to its convex rest position is effected by a pressure pulse of the working fluid into the pressure chamber 15, which "inflates" the membrane 9, 9a, 9b again.

[0064] Lateral stop elements 13 are provided, which are designed to be particularly low-friction and consist, for example, of plastic elements with advantageously low-friction sliding surfaces, in order to enable low-friction movement of the pressure stamp 5, 6 into the recess 12.

[0065] The Figures 5 and 6 show modifications of membrane 9 in top view, according to the invention. Figure 5 It is shown that the diaphragm 9a is triangular in shape, with the larger contact area at the front in the direction of travel and the smaller contact area at the rear in the direction of travel, so that an initially increased pressure peak is generated by the vehicle 10, which is traveling in direction 11, towards the check valve 18 located on the outlet side. This increases the efficiency of the compression in the pressure chamber 15.

[0066] The Figure 6 shows in the modification to the embodiment according to Figure 5, that there cannot be two separate membranes 9a, each assigned to one side of the vehicle 10, but that a common triangular membrane 9b can be provided.

[0067] The same applies, incidentally, to the representations in Figure 1 , where either two separate membranes 9 can be acted upon by two separate pressure stamps 5, 6 or a continuous membrane such as the triangular membrane 9b in Figure 6 is shown.

[0068] The Figures 7a and 7b , as well as the Figures 8a and 8b The figures show the unloaded and loaded states, respectively, where it can be seen that the bottom side of the pressure chamber 15 is formed by the concrete trough 1 itself.

[0069] In another embodiment, however, it may also be provided that this surface 38 is lined by a rubber surface or by the surface of a second membrane.

[0070] The previously mentioned inlet and outlet pipes 16, 17 open into the pressure chamber 15, in which oppositely directed check valves 18 are arranged.

[0071] The Figures 7a and 7b further show that the printing die 5, 6 is arranged directly on the underside of the bending plate 3, with the parts provided with a raised line in Figure 7b represent the stress case.

[0072] Furthermore, the Figure 7a , that the clamping of the membrane 9 is effected by a clamping block 20, which at the same time forms an inwardly directed vertical stop 21 on its upper side for the associated projection 10 of the pressure stamp 5, 6.

[0073] This ensures that the printing die 5, 6 is limited in its raised position – contrary to the direction of arrow 22. On the right side of the Figure 7bIt is shown that instead of the terminal block 20 a simple terminal strip 20a can also be used and the stop 21 can be formed by a stop strip 21a.

[0074] Otherwise, the same reference symbols apply to the same parts.

[0075] The Figures 8a and 8b These again show a stress and a relief state, with the same parts being labelled with the same reference symbols.

[0076] It can be seen that the printing stamp 5, 6 forms a differently shaped lateral vertical stop 14, which interacts with an associated housing-fixed stop 21.

[0077] Here, the membrane 9 is also clamped to the terminal block 20a in a different way.

[0078] It is further shown that the bottom side of the pressure chamber 15 is not formed by the concrete surface 38 of the concrete trough 1, but rather the concrete surface is covered by a matrix 39, which forms a particularly smooth surface 38. The matrix 39 preferably consists of an aluminum material or a low-friction plastic coating.

[0079] In the Figures 9 to 13 As an example, which is not part of the invention, the use of a tube body 23 is now described in relation to the previously described one-sided membrane 9. This tube body can either be designed as an oval tube body and can also form lateral, horizontally extending, parallel folds to each other in order to form a bellows-like folded body.

[0080] Otherwise, the same reference numerals apply to the same parts, whereby in Figure 9The figure shows that the recess 12 is limited by two lateral stop profiles 25, and the bottom surface of the recess 12 is lined by a sliding film in order to ensure particularly favorable and low-force compression of the hose body 23.

[0081] Likewise, the reference numerals 26 indicate sliding films arranged on the ceiling side or on the top side of the hose body 23.

[0082] It is also shown that a sliding film 24 is arranged in the space between the underside of the bending plate 3 and the top of the printing die 5, 6.

[0083] The lateral stop profiles 25 thus form both the height stop for the printing die 5, 6, but also the lateral boundary of the printing space 15.

[0084] The Figure 10Figure 1 shows an embodiment of a membrane 9 in the connection area between membranes 9 adjoining each other in the direction of travel. The connection area is formed between the rubber plates 3a, 3b by the previously mentioned overlapping joint 4. The mutual connection of the membranes 9 in the direction of travel is achieved by a central connecting body 32 extending transversely to the direction of travel, to the underside of which the respective edges of the adjoining membranes 9, extending transversely to the direction of travel, are connected.

[0085] The connecting body 32 rests on a central bearing body 31 extending transversely to the direction of travel, which preferably extends over the entire width of the recess 12.

[0086] The pressure stamps 5, 6 are therefore arranged one behind the other at a distance from each other in the direction of travel, whereby the rubber stamps 5, 6 may also have slots 40 to facilitate bending.

[0087] The Figure 11 Figure 1 shows a modification of the membrane 9, 9a, 9b in the form of a compressible hose body 23, where it can be seen that the respective inlet and outlet pipe 16, 17 connect to the pressure chamber 15 on the underside and the respective check valve 18 is located there.

[0088] The illustration also shows the deformation of the bending plate 3 when driven over by the tire 7, which drives over the arrangement in the direction of travel 11.

[0089] There are still bearing blocks 34 available, which are part of a connecting profile 33 in order to ensure lateral support of the bending plates 3, 3a, 3b.

[0090] It can also be seen that the concrete trough 1 is equipped on the upper side with a counter bearing 35, the surface of which forms the bottom side of the pressure chamber 15.

[0091] In this embodiment, it is important that the pressure chamber 15 is arranged in the interior of the compressible hose body 23 and that the surface of the counter bearing 35 serves only for pressure distribution and a sliding film may be arranged there.

[0092] In contrast to Figure 11 shows the Figure 12 a lateral connection of the outlet and inlet pipes 16, 17, wherein only in one embodiment it is shown that the pressure chamber 15 of the hose body 23 opens into an outlet pipe 16 which is closed by a spring-loaded check valve 18.

[0093] The Figure 11 and 12 The raised lines also show the state of stress compared to the unstressed state.

[0094] The same representation also results from Figure 13 , where it can be seen that the pressure chamber 15 of the hose body 23 is laterally transferred into a connecting hose 36 and into a vertically directed check valve 18, so that the working fluid discharges from the pressure chamber 15 in the direction of arrow 19.

[0095] To Figure 13 It is further added that it is preferred if the respective pressure dies 5, 6 used are each provided with ramps 49 in the direction of travel in order to avoid a sudden upsetting of the bending plates 3 above them and thus the formation of undesirable noises.

[0096] The Figure 14 shows that both the membrane 9 and the compressible hose body 23 are under a pre-pressure, which is, for example, represented as pre-pressure 28 in the pressure-time diagram in Figure 14 is registered.

[0097] In a preferred embodiment, the pre-pressure can be, for example, 0.3 bar. The pre-pressure ensures that the diaphragm 9 or the hose body 23 always returns to its rest position when unloaded. Therefore, no elastic return elements are required.

[0098] The diagram according to Figure 14 shows that starting from a pre-pressure 28, the pressure curve 29 can rise to a maximum 30 of, for example, in the range between 5 and 30 bar when driven over with the tire 7, with a typical value being in the range between 5 and 10 bar.

[0099] After driving over it with tire 7, the pressure curve drops back to a minimum and the pre-pressure 28 is restored.

[0100] The Figure 15Figure 1 shows in perspective the clamping of a single-layer membrane 9, where it can be seen that a circumferential retaining frame 37 is present, which clamps the membrane on all sides and thus forms a precisely defined pressure chamber 15, which is closed on all sides and holds the membrane 9, 9a, 9b in its convexly curved basic position.

[0101] The Figure 16 Figure 1 shows several possible embodiments of a printing die 5, 6 in perspective view. In one embodiment, the printing die 5, 6 can be designed as an elongated cuboid body, in which only the longitudinal edges 45 on the pressure-receiving top surface 41 and the pressure-emitting bottom surface 42 are rounded.

[0102] In a first embodiment, the pressure-exerting underside 42, which acts directly on the surface of the membrane 9, is designed to be straight and flat. This is symbolized by the drawn straight line 44.

[0103] In a second embodiment, it can be provided that instead of the straight, pressure-exerting underside 42, which acts directly on the top of the membrane 9, a convex surface 42 is now present, which is symbolized by the radius 43 shown.

[0104] This surface 42 is therefore convexly rounded. In other embodiments, it may be provided that instead of the convex rounding of the pressure-bearing underside 42, a concave curvature is present.

[0105] All of the above-mentioned surface designs also apply to the pressure-bearing top surface 41, which lies directly against the underside of the respective bending plate 3, 3a, 3b. This pressure-bearing top surface 41 can therefore be flat, convex, or concave.

[0106] The connection between the pressure-receiving top surface 41 of the pressure punch 5,6 and the bottom surface of the bending plate 3, 3a, 3b resting on the pressure punch can be loose, so that the two parts only touch in a load-transmitting manner.

[0107] In another embodiment, the respective pressure die 5, 6 may be directly and integrally connected to the underside of the bending plate 3, 3a, 3b, forming a single, continuous part with it. In this case, the pressure die 5, 6 is integrally formed with the underside of the bending plate.

[0108] In the illustrated embodiment according to Figure 16 Furthermore, it is shown that the longitudinal edges 45 of the pressure-receiving top surface 41 and the pressure on the pressure-emitting bottom surface 42 are parallel to each other.

[0109] In another embodiment, it can be provided that the longitudinal edges 45 of the upper surface 41 form an angle to the longitudinal edges 45 of the lower surface 42, so that the entire body of the printing die 5,6 is conical in the direction of travel 11.

[0110] The front face 46 of the pressure piston 5, 6, located at the front in the direction of travel 11, therefore has a smaller cross-section than the rear face 47 in the direction of travel 11. Consequently, the body contour of the pressure piston 5, 6 widens from a smaller cross-section in the direction of travel 11 to a wider cross-section at the rear in the direction of travel 11, so that the entire body of the pressure piston 5, 6 is wedge-shaped or conical. This has the advantage that, due to the conical shape of the pressure piston 5, 6, a forced pressure pulse propagating in the direction of travel 11 is generated in the pressure chamber 15 below the diaphragm 9. This improves the efficiency of pressure generation in the pressure chamber.

[0111] In Figure 17 The different energy conversion possibilities are shown schematically.

[0112] The energy conversion described above takes place in the area of ​​the energy transfer plate 50, which has been described in a variety of embodiments. The vehicle 10 travels with its tires 7 in the direction of travel 11 over the energy transfer plate 50 and, at approximately position 48, initiates the energy conversion in the form of a pressure pulse generated in the energy transfer plate 50. The pressure pulse 52 then propagates in the direction of the arrow shown and is deflected in the direction of arrow 53 and diverted into a pressure line 54, which leads into a machine room 47.

[0113] In the engine room 47 an energy converter 55 is arranged, so that the kinetic energy 51 of the vehicle 10 entered in the energy transfer plate 50 is now transferred into the pressure pulse of a fluidic working medium and the energy converter 55 arranged there is able to perform an energy conversion.

[0114] In a first embodiment, it is shown that electrical energy is generated by the energy converter 55 via the energy path 57, which is supplied, for example, to a charging station 56.

[0115] For example, via another, alternative energy path 58, electrical energy is introduced as three-phase current in the direction of arrow 59 into a suitable three-phase network 60.

[0116] The Figure 17 As a further possible embodiment, it also shows that a pressure accumulator 61 can be arranged in the road substructure below the energy transfer plate 50, into which the working medium 62, compressed and generated under pressure in the energy transfer plate 50, is introduced via check valves 62.

[0117] Thus, the working medium 61 can be kept under high pressure in the pressure reservoir 61 and released as needed, for example via the pressure line 54 into the energy converter 55 located in the engine room 47.

[0118] However, it is not necessary for the pressure accumulator 61 to be located in the road substructure below the energy transfer plate 50. It can also be arranged as a separate element above road level and, for example, also be located in or next to the engine room 47.

[0119] The general description also pointed out that the energy converter 55 can also generate potential mechanical energy, for example by operating a pumped storage power plant or by moving a mechanical weight from a lower lifting level to an upper lifting level.

[0120] The Figure 18Figure 1 shows a further preferred embodiment of the energy transfer plate 50 in a top view, where it can be seen that the bending plates 3a, 3b, 3c extend over several overlapping joints 4, but that the associated membranes 9 extend without interruption over several bending plates and thus have a significantly greater length in the direction of travel 11 than, for example, the length of the bending plates 3, 3a, 3b, 3c themselves.

[0121] It is also evident that it is preferred if the membranes 9 have an approximately conical shape in plan view, i.e., their width decreases in the direction of travel 11 from a wider cross-section to a narrower cross-section. This results in a compression of the working medium when a vehicle tire, which is only schematically represented as vehicle 10 with its axle 8, travels from the wider cross-section of the membrane 9 in the bending plate 3a to the narrower cross-section of the membrane 9 in the area of ​​the bending plate 3c.

[0122] It is also shown that, for example, such an energy transfer plate 50 can have a total length of 10 meters and it is only necessary to arrange suitable check valves 18 on the inlet and outlet side of the respective energy transfer plate 50.

[0123] This allows the number of check valves per energy transfer plate to be reduced by 50.

[0124] The Figure 18Figure 63 also shows that the medium flow is drawn in from a reservoir (not shown) on the left in the direction of arrow 63, is displaced by the conical membranes 9 of each tire 7 of each axle, and finally flows out as a compressed medium flow in the direction of arrow 63 from the check valves 18 shown on the right. Drawing legend

[0125] 1 Concrete trough 2 Base 3 Bending plate 3a, 3b 4 Overlap joint 5 Pressure stamp 6 Pressure stamp 7 Tire (of 10) 8 Axle 9 Membrane 9a, 9b 10 Vehicle 11 Direction of travel 12 Recess (of 1) 13 Stop elements 14 Attachment (of 5, 6) 15 Pressure chamber 16 Outlet pipe 17 Inlet pipe 18 Check valve 19 Arrow direction 20 Clamping block 20a 21 Stop 21a 22 Arrow direction 22' 23 Hose body 24 Sliding foil 25 Stop profile 26 Sliding foil 27 Fastening 28 Pre-pressure 29 Pressure curve 30 Maximum 31 Bearing body 32 Connecting body 33 Connecting profile 34 Bearing block 35 Counter bearing 36 Connection hose 37 Mounting frame 38 Surface (of 15) 39 Die 40 Slot 41 Top 42 Bottom 43 Radius 44 Straight 45 Longitudinal edge 46 End face 47 Machine room 48 Position 49 Lead-up slope 50 Energy transfer plate 50' 51 Kinetic energy 52 Pressure surge 53 Arrow direction 54 Pressure line 55 Energy converter 56 Charging current 57 Energy path 58 Energy path 59 Arrow direction 60 Pressure current network 61 Pressure accumulator 62 Check valve 63 Arrow direction 64 65 Pressure profile (of 5,6) 66 Recording profile (of 1),

Claims

1. A device for recovering energy from the kinetic energy of vehicles, which is covered on the road side by a cover plate that can be driven over by the tires (7) of the vehicle, wherein at least one compressible pressure body (9, 9a, 9b) is arranged in a recess (12), the pressure chamber (15) of which is filled with a working fluid which, when the pressure body (9, 9a, 9b) is compressed, can be displaced from the pressure chamber (15) in the direction of an accumulator and / or a working machine, wherein the cover plate is further designed as an elastically bendable bending plate (3, 3a, 3b), on the underside of which at least one vertically movable pressure stamp (5, 6) is provided in a load-transmitting manner, which engages in the recess (12) and acts on the upper side of the compressible pressure body (9, 9a, 9b) arranged there, wherein the pressure body is designed as a membrane (9, 9a, 9b) that circumferentially seals the pressure chamber (15), wherein the device comprises a concrete trough (1) that is open at the top, in which the recess (12) is provided, and the concrete trough (1) is covered towards the top by the bending plate (3), wherein under the bending plate (3) that covers the entire area of the concrete trough (1), two pressure stamps (5, 6) that are parallel to each other are provided, which absorb the deflection of the bending plate (3) and transfer it to the one or two membranes (9, 9a, 9b) located below, characterised in that the width of the bending plate (3), perpendicular to the direction of travel, is greater than the tire spacing of tires on an axle of a standard road vehicle, and in that the one or two membranes (9a, 9b) are triangular in shape, with the larger contact area in the direction of travel (11) being at the front and the smaller contact area in the direction of travel (11) being at the rear.

2. The device according to claim 1, characterised in that the membrane (9, 9a, 9b) is convexly curved in the unloaded position.

3. The device according to claim 1 or 2, characterised in that the membrane (9, 9a, 9b) is preloaded by a preliminary pressure in the pressure chamber (15) or by an elastic or fluidic preloading element.

4. The device according to any one of claims 1 to 3, characterised in that the pressure stamp (5, 6) extends across the width of the device and transfers the vehicle weight of the two tires of an axle.

5. The device according to any one of claims 1 to 4, characterised in that the bottom side of the pressure chamber (15) is sealed in a medium-tight manner by a second membrane.

6. The device according to any one of claims 1 to 5, characterised in that bending plates (3a, 3b) arranged one behind the other in the direction of travel (11) form an overlap joint (4) in order to enable the bending plates (3) to be driven over smoothly in the direction of travel (11).

7. The device according to any one of claims 1 to 6, characterised in that for low-friction displacement of the pressure stamps (5, 6) into the recess (12), lateral stop elements (13) are provided, which are designed to have low friction.

8. The device according to claim 7, characterised in that the stop elements (13) consist of plastic elements with low-friction sliding surfaces.

9. The device according to any one of claims 1 to 8, characterised in that the membrane (9) is clamped by a clamping block (20) which forms an inwardly directed vertical stop (21) on its upper side for an associated shoulder (10) of the pressure stamp (5, 6).

10. The device according to any one of claims 1 to 9, characterised in that the clamping of a single-layer membrane (9, 9a, 9b) is carried out with a circumferential holding frame (37) that clamps the membrane (9, 9a, 9b) on all sides and thus forms a precisely defined pressure chamber (15) that is closed on all sides and holds the membrane (9, 9a, 9b) in its convexly curved basic position.