Machine device for a machine and method for transmitting a signal

Abstract

Machine device (100) for a machine (105), wherein the machine device (100) has the following features: at least one machine component (110); a gearbox housing (172), wherein at least a section of the machine component (110) and a lubricating medium (125) for lubricating the machine component (110) are arranged in the gearbox housing (172), wherein an interior of the gearbox housing (172) is divided into separate chambers by components of the machine device (100) located at a critical position, which are fluidically connected to each other only via bearing gaps or labyrinthine structural elements; a communication module (120) arranged in the gearbox housing (172), which is configured to send a signal (127) into the lubricating medium (125); and a receiver (140) configured to receive the signal (127), wherein the receiver (140) and the communication module (120) are arranged in different chambers of the gearbox housing (172); characterized by the fact that the signal (127) is formed to pass the critical position (175).

Description

[0001] The present approach relates to a machine device for a machine and a method for transmitting a signal.

[0002] There is interest in acquiring sensor information inside gearboxes, electric motors, shock absorbers, or bearings and making it available for further use. DE 11 2013 004 129 T5 discloses a wireless system and a method for measuring an operating condition of a machine. US 2021 / 0 217 255 A1 discloses the integration of internal sensors into a gearbox. US 2020 / 0 232 834 A1 discloses an inductive sensor for liquid measurements. US 2018 / 0 274 ​​982 A1 discloses a magnetic field communication system and method.

[0003] Against this background, the present approach provides an improved machine device for a machine and an improved method for transmitting a signal according to the main claims. Advantageous embodiments are described in the dependent claims and the following description.

[0004] The advantages achievable with the presented approach are that a signal can be transmitted quickly and reliably in a lubricant-containing environment.

[0005] A machine device for a machine comprises at least one machine component, a gearbox housing, and a radio transmitter. At least one section of the machine component and a lubricating medium for lubricating the machine component are arranged in the gearbox housing, wherein the interior of the gearbox housing is divided into separate chambers by components of the machine device located at a critical position. These chambers are fluidically connected to each other only via bearing gaps or labyrinthine structural elements. The radio transmitter is arranged in the gearbox housing and is configured to send a radio signal into the lubricating medium, representing a sensor value. The signal is configured to pass through the critical position.

[0006] The machine can be a drive unit for a vehicle, such as a motor vehicle or ship, or alternatively, a generator for a wind turbine. The machine component can be any component of the machine that is typically operated in conjunction with a lubricating medium. For example, the machine component can be at least part of a gearbox, bearing, shock absorber, or electric motor of the machine. The radio signal can represent a modulated electromagnetic wave. The radio transmitter can be configured to modulate information representing the sensor value onto a carrier frequency of the radio signal using appropriate modulation. The radio transmitter can include an antenna for transmitting the radio signal as a free-space wave. The lubricating medium can be a liquid, for example, a viscous or low-viscosity fluid, and / or a solid material.Furthermore, the lubricating medium can comprise a material-air mixture. The radio transmitter can be configured to send the radio signal into the lubricating medium. The radio signal can be configured to propagate within the lubricating medium. Advantageously, the machine device enables reliable signal transmission through a lubricating medium via radio.

[0007] The machine device includes a radio receiver designed to receive the radio signal. The receiver and the radio transmitter are located in different chambers of the gearbox housing. Furthermore, the radio receiver can be configured to receive the radio signal even after it has passed through the lubricant. The radio receiver can be connected, or connectable, to a control unit of the machine, for example, via a wired or wireless connection. This enables the transmission of the sensor value from the radio transmitter through the lubricant to a control unit. The radio transmitter and the radio receiver can be located, for example, more than 10 cm, 50 cm, 1 m, 2 m, 5 m, or 6 m apart.

[0008] It is advantageous if, according to one embodiment, the radio transmitter is part of a transceiver that further comprises an additional radio receiver configured to receive another radio signal. In this way, radio signals can be transmitted by the transceiver via the radio transmitter and further radio signals can be received via the additional radio receiver. Such a transceiver advantageously allows, for example, a radio control signal for setting a sensor function of a sensor coupled to the transceiver to be received by a control unit of the machine for sensing the sensor value.

[0009] Furthermore, the radio receiver can be part of another transceiver, which in turn includes another radio transmitter configured to send the radio signal or another radio signal. Such an additional transceiver advantageously allows, for example, a radio control signal for setting a sensor function of a sensor coupled to the transceiver to be sent from a control unit of the machine to the transceiver for sensing the sensor value.

[0010] At least one wall of a receiving chamber in the gearbox housing can be made of a metallic material. This metallic material can act as a shield against the propagation of the radio signal through the wall. In this way, the propagation of the radio signal can be limited to the interior of the receiving chamber or a housing enclosing the receiving chamber.

[0011] According to one embodiment, the lubricating medium can be a fluid, gel, grease, oil, and / or a material-air mixture. The lubricating medium can also be a fluid mist or an oil mist. Such lubricating media are suitable for lubricating a machine component.

[0012] It is further advantageous if, according to one embodiment, the machine device includes a sensor configured to detect the sensor value. The sensor can, for example, comprise a temperature sensor, speed sensor, acceleration sensor, pressure sensor, structure-borne sound sensor, and / or a microphone. In this way, a sensor value can be detected within the machine component and transmitted via the radio transmitter to a device on the machine located remotely from the sensor.

[0013] The radio transmitter can be configured to send the radio signal at a transmission frequency of 100 MHz to 100 GHz. For example, the radio transmitter can be configured to send the radio signal at a transmission frequency of 433 MHz and / or 868 MHz. Such a frequency range can ensure reliable transmission of the radio signal.

[0014] The machine device can be configured as a gearbox, shock absorber, electric motor, or bearing for the machine. The gearbox or bearing can be configured for use in a motor vehicle, a bow thruster for a ship, or a wind turbine. The shock absorber or electric motor can be configured for use in a motor vehicle.

[0015] A receiving chamber of the gearbox housing can be completely or partially filled with the lubricating medium. This allows for reliable signal transmission through a receiving chamber that is completely or partially filled with the lubricating medium.

[0016] A method for transmitting a signal to a machine component of a machine comprises a sending step and a receiving step. In the sending step, the signal, representing a sensor value, is transmitted by means of a radio transmitter arranged in a gearbox housing, wherein at least a section of the machine component and a lubricating medium for lubricating the machine component are arranged in the gearbox housing, wherein an interior of the gearbox housing is divided into separate chambers by components of the machine device located at a critical position, which are fluidically connected to each other only via bearing gaps or labyrinthine structural elements, and wherein the signal is transmitted as a radio signal into the lubricating medium.In the receiving step, the signal is received using a receiver, with the receiver and the radio transmitter located in different chambers of the gearbox housing. The signal is designed to pass through the critical position.

[0017] Before the transmission step, the method may also include a read step in which the sensor value is read using a sensor. After the transmission step, the method may also include a receive step in which the radio signal is received by means of a radio receiver.

[0018] This method can be implemented, for example, in software or hardware, or in a hybrid form of software and hardware, such as in the machine device or control unit described above.

[0019] Examples of the approach presented here are shown in the drawings and explained in more detail in the following description. It shows: Fig. 1 a cross-sectional view of an embodiment of a machine device for a machine; Fig. 2 a cross-sectional view of a machine device according to an exemplary embodiment; Fig. 3 a section of a cross-sectional view of a machine device according to an exemplary embodiment; Fig. 4 a perspective view of a ship with a machine device according to an exemplary embodiment; Fig. 5 a perspective view of a wind turbine with a machine device according to an exemplary embodiment; Fig. 6 a cross-sectional view of a machine device according to an exemplary embodiment; Fig. 7 a schematic side view of a machine device according to an exemplary embodiment; Fig. 8 a perspective view of a machine device according to an exemplary embodiment; Fig. 9 a lateral cross-sectional view of a machine device according to an exemplary embodiment; Fig. 10 a schematic side view of a machine device according to an exemplary embodiment; Fig. 11 a schematic side view of a machine device according to an exemplary embodiment; Fig. 12 a schematic side view of a machine device according to an exemplary embodiment; and Fig. 13 a flowchart of a method according to an embodiment for transmitting a signal for a machine component for a machine.

[0020] In the following description of preferred embodiments of the present approach, the same or similar reference numerals are used for the elements shown in the various figures and having a similar effect, without repeating these elements.

[0021] Fig. Figure 1 shows a cross-sectional view of an embodiment of a machine device for a machine 105.

[0022] The machine device 100 comprises at least one machine component 110, a receiving chamber 115, and a communication module 120. At least one section of the machine component 110 and a lubricant 125 for lubricating the machine component 110 are arranged in the receiving chamber 115. The communication module 120 is arranged in the receiving chamber 115 and is configured to send a signal 127, which, for example, represents a sensor value.

[0023] For example, the communication module 120 can be configured as a radio transmitter. However, the communication module 120 can also be part of an edge computing network. Generally, the communication module 120 makes it possible to transmit information and energy wirelessly and exchange them with other components.

[0024] According to this embodiment, the machine device 100 is, by way of example, configured as a gearbox 130, and the machine 105 is, by way of example, configured as a bow thruster 135 for a ship. The gearbox 130 here comprises, by way of example, as a machine component 110, at least one gearbox shaft 136, which can be driven by means of a drive shaft 137 connected to a drive, in order to rotate a drive propeller 138 of the bow thruster 135 via a propeller shaft 139. According to this embodiment, the lubricant 125 serves to lubricate a gear drive, worm gear drive, or bevel gear drive between at least two of the shafts 136, 137, 139.According to an alternative embodiment, the machine device 100 is designed as any other component of the machine 105 or of another machine which is operated in conjunction with a lubricating medium 125, for example as a bearing.

[0025] The signal 127, hereinafter also referred to as the radio signal, comprises, according to one embodiment, freely propagating modulated electromagnetic waves independent of the communication module 120, hereinafter also referred to as the radio transmitter. According to this embodiment, the lubricating medium 125 is a liquid, for example, a viscous or low-viscosity fluid, and / or a solid material. According to this embodiment, the radio transmitter 120 is configured to transmit the radio signal 127 into the lubricating medium 125.

[0026] According to one embodiment, the machine device 100 has a receiver 140, hereinafter also referred to as a radio receiver, which is configured to receive the radio signal 127. In this embodiment, the radio receiver 140 is arranged in the receiving chamber 115 or, alternatively, externally from the receiving chamber 115. According to one embodiment, the radio receiver 140 is configured to receive the radio signal 127 after it has passed through the lubricant 125. According to one embodiment, the radio receiver 140 is connected to a control unit of the machine 105 by means of a signal connection, for example, wired or wireless. The radio transmitter 120 and the radio receiver 140 can be arranged at virtually any distance from each other, for example, several centimeters, several decimeters, or several meters apart. By way of example, the radio transmitter 120 and the radio receiver 140 are spaced more than one meter apart.

[0027] According to one embodiment, the radio transmitter 120 is part of a transceiver, which further comprises a radio receiver configured to receive a further radio signal 145. Furthermore, according to one embodiment, the radio receiver 140 is part of a further transceiver, which further comprises a radio transmitter configured to transmit the further radio signal 145. According to one embodiment, the further radio transmitter is configured to send, as the further radio signal 145, a radio control signal for setting a sensor function of a sensor 150 coupled to the transceiver for sensing the sensor value from a control unit of the machine 105 to the transceiver. According to one embodiment, the sensor 150 is an 868 MHz sensor module.According to one embodiment, the further transceiver or radio receiver 140 comprises a plug, also called a "dongle", which is capable of transmitting signals and can be coupled to the control unit.

[0028] According to this embodiment, at least one wall 155 of the receiving chamber 115 comprises a metallic material. According to this embodiment, the lubricating medium 125 comprises a fluid, gel, grease, oil, and / or air. According to this embodiment, the receiving chamber 115 is completely filled with the lubricating medium 125, or, according to an alternative embodiment, partially filled.

[0029] According to this embodiment, the machine device 100 further comprises the sensor 150, which is configured to sense the sensor value. According to this embodiment, the sensor 150 includes a temperature sensor, speed sensor, acceleration sensor, pressure sensor, and / or a microphone. According to this embodiment, the radio transmitter 120 is configured to transmit the radio signal 127 at a transmission frequency of 100 MHz to 100 GHz. For example, according to this embodiment, the radio transmitter 120 is configured to transmit the radio signal 127 at a transmission frequency of 433 MHz and / or 868 MHz. According to this embodiment, the jet rudder 135 shown here comprises a lower section encompassing the propulsion propeller 138 for installation in seawater 160, an engine room 165, and a structure 170 arranged between the lower section and the engine room 165, through which, according to one embodiment, the transmission shaft 136 is guided.

[0030] The machine device 100 presented here advantageously enables radio transmission within a closed metal structure in various media. The machine device 100 thereby implements nodes for an intelligent sensor 150.

[0031] The machine device 100 can be used, for example, as shown here in Fig. 1 described for shipping or as in the Fig. 5, Fig. 6 to Fig. 7 described for the wind energy business.

[0032] The described approach makes it possible to acquire sensor information inside gearboxes 130, electric motors, shock absorbers, or bearings where it is not possible or economical to connect the sensor 150 with wires. In the specific application shown here, this is a lower bow thruster gearbox 130 for ships. Wireless communication is also considered impractical due to the metallic environment, the limited space within the gearbox housing 172, and the presence of the lubricating medium 125, such as oil, oil mist, and / or air, inside the gearbox 130. This is also possible with other media such as liquid, gel, and / or grease.

[0033] Unlike, for example, ultrasound or electromagnetic fields in induction coils, the machine device presented here uses 100 radio signals 127, 145 for communication. Radio signals 127, 145 are advantageous because ultrasound transmitters require too much energy for wireless devices, and inductive fields only function within a small range of centimeters.

[0034] Visualized here are in Fig. 1. For example, the machine device 100 in the form of the gearbox 130 with the lubricating medium 125 in the form of gearbox oil, and critical positions 175 for communication. Critical positions 175 are, for example, positions of bearings or gear stages within the gearbox housing 172. Components of the machine device 100 located at such a critical position can divide the interior of the gearbox housing 172 into separate chambers, which may only be fluidically connected to each other via bearing gaps or labyrinthine structural elements. Advantageously, such critical positions can be traversed by the radio signals 127, 145.For example, radio signals 127 and 145 can pass through a pivot bearing of the gearbox housing 172, through which the gearbox shaft 136 passes and which allows a lower section of the gearbox housing 172 to rotate relative to an upper section of the gearbox housing 172. Thus, by way of example, radio signals 127 and 145 can be transmitted between a lower section of the gearbox housing 172 located outside the ship in the assembled state of the machine device 100 and an upper section of the gearbox housing 172 located inside the ship.

[0035] To enable communication within the gearbox 130, the machine device 100 presented here, according to one embodiment, uses a 100 MHz to 100 GHz radio transmission, for example, a 433 MHz and / or 868 MHz radio transmission. This works due to the relatively similar permittivity, also called "dielectric conductivity," and the low conductivity. This is also possible with other media such as liquids, gels, and / or grease. The permittivity of a vacuum, for example ε₀, is a physical constant that plays a role in describing electric fields. It gives the ratio of the electric flux density to the electric field strength in a vacuum. The permittivity of air ε₀ a The permittivity of oil ε is 1. oThe value is 2. This enables good radio transmission in the medium 125 oil inside the gearbox 130. The metallic environment, due to the metallic wall 155 of the receiving chamber 115 of the gearbox housing 172, limits the propagation of the signal 127, 145 to the interior of the gearbox housing 172. Reflections of the radio signal 127, 145 can influence the input at the radio receiver 140 by means of a minimum or maximum standing wave amplitude. Furthermore, they can affect the signal quality of the transmitted information through the temporal variance of the reflected radio waves. Very small constrictions, down to millimeters, and labyrinthine structures in the geometry do not block the signal 127, 145 according to this embodiment, but rather influence the effect described above.

[0036] The clever positioning of the radio transmitter 120, which can have a transmitting antenna, and the radio receiver 140, which can have a receiving antenna, as shown here, enables radio transmission using the radio signals 127 and 145. Optionally, the wavelength and the length of the data packets can be varied, allowing, for example, shorter or longer transmission times.

[0037] Transitions from the oil phase shown here to, for example, an air phase or oil mist phase, see for example Fig. 7. These are possible by adjusting the transmission power and antenna matching, allowing for both airborne and oil-based transmission. This is possible due to the relatively similar permittivity.

[0038] In summary, the machine device 100 presented here enables radio transmission within a closed metal structure such as the gearbox 130. According to one embodiment, the gearbox housing 172 is completely filled with the lubricating medium 125, such as liquid, oil, gel, grease, and / or a liquid-oil-gel-air mixture. The transmission frequency of the radio transmitter 120 is, for example, between 100 MHz and 100 GHz. Radio transmission is possible due to a suitable antenna length of the transmitting and / or receiving antennas, position adjustment, frequency modulation, and / or the design of the data packet. Appropriate parameterization takes into account, for example, a property of the lubricating medium 125 used, a transmission distance, geometric dimensions, and / or the geometry of the labyrinthine structure within the gearbox housing 172 that the radio signal 127 must traverse.Radio transmitter 102 and radio receiver 140, each of which can also be designed as a transmit-receive unit, optionally have a suitable power supply device, for example in the form of an energy storage device or a device for energy harvesting, i.e. the generation of electrical energy by using the ambient temperature or vibrations.

[0039] Fig. Figure 2 shows a cross-sectional view of a machine device 100 according to an exemplary embodiment. This could be the one described in Fig. 1 described machine device 100 act.

[0040] A section 200 of the machine device 100 is in Fig. 3 shown in more detail.

[0041] Fig. Figure 3 shows a section 200 of a cross-sectional view of a machine device 100 according to an exemplary embodiment. This can be the one shown in Fig. The section 200 described in Figure 2 of the machine device 100, which is designed as a jet rudder, is shown. An arrangement of the radio transmitter 120 adjacent to a shaft 139 is shown, which is connected to another shaft 136 via two bevel gears. Apart from a mounting surface of the radio transmitter 120 on the wall 155, the radio sensor 120 is completely surrounded by the lubricating medium 125.

[0042] Fig. Figure 4 shows a perspective view of a ship 400 with a machine device 100 according to an exemplary embodiment. This could be the one shown in Fig. The machine device 100 described in Section 1 is in the form of a thruster 405. The thruster 405 can also be configured as a bow thruster for the ship 400.

[0043] Fig. Figure 5 shows a perspective view of a wind turbine 500 with a machine device 100 according to an exemplary embodiment. In contrast to the one based on Fig. The machine device 100 described in section 2 is configured as a wind turbine gearbox 502 for the wind turbine 500 according to this embodiment. According to this embodiment, a generator 505 is coupled to a wind turbine propeller 510 by means of the machine device 100.

[0044] Fig. Figure 6 shows a cross-sectional view of a machine device 100 according to an exemplary embodiment. This could be the one described in Fig. The machine device 100 described in Section 5 is in the form of the wind turbine gearbox 502 for the wind turbine. The wind turbine gearbox 502 is designed as a planetary gearbox with a central sun gear, a non-rotating ring gear, and three planetary gears. The ring gear is rigidly connected to a gearbox housing 172 of the machine device 100. The planetary gears can be coupled to a rotor shaft 603 of the wind turbine propeller. The sun gear can be coupled to an output shaft 605, which is driven by the rotor shaft 603 via the wind turbine gearbox 502.

[0045] Fig. Figure 7 shows a cross-sectional view of a machine device 100 according to an exemplary embodiment. This could be the one described in Fig. The machine device 100 described in section 6 is in the form of the wind turbine gearbox 502 for the wind turbine. Compared to the illustration in Fig. Figure 6 shows the wind turbine gearbox 502 rotated 90° to the side.

[0046] In addition to the planetary gear set, the wind turbine gearbox 502 has further gear stages through which the rotation of the output shaft 605 is converted into a rotation of a generator shaft 700. The generator shaft 700 is used, for example, to drive a rotor of a generator in the wind turbine.

[0047] The lubricating medium 125 collects in a lower section of the gearbox housing 172. During operation of the wind turbine gearbox 502, a lubricating medium-air mixture, in this case an oil mist 705, forms, which can spread throughout the entire cavity of the gearbox housing 172. According to this embodiment, the radio transmitter 120 is located in the lower section of the gearbox housing 172, and the radio receiver 140 is located in an upper section of the gearbox housing 172. The radio transmitter 120 and radio receiver 140 are arranged on opposite sides of the output shaft 700 and an output-side extension of the rotor shaft 603 coupled to the planetary gears. By way of example, the radio transmitter 120 is completely or at least partially covered by the lubricating medium 125, while the radio receiver 140 is surrounded by the oil mist 705 or, alternatively, only by air.

[0048] Fig. Figure 8 shows a perspective view of a machine device 100 according to an exemplary embodiment. This could be the one described in Fig. 1 or Fig. The machine device 100 described in Section 5 differs from the machine device 100 described in this embodiment, with the difference that the machine device 100 in this embodiment is configured as an electric motor 800 for a vehicle. Communication within the electric motor 800 is enabled by the radio transmitter 120. For example, the radio transmitter 120 is attached to a rotor of the electric motor 800 and coupled to a sensor 150, which is configured, for example, as an intelligent sensor node for temperature measurement. Optionally, the radio transmitter 120 and the sensor 150 are configured as a single unit.

[0049] Fig. Figure 9 shows a side cross-sectional view of a machine device 100 according to an exemplary embodiment. This could be the one described in Fig. The machine device 100 described in section 8 is in the form of the electric motor 800.

[0050] The electric motor 800 comprises a motor housing 900, in which a stator 902 and a rotor 906 of the electric motor 800, supported by a motor shaft 904, are enclosed. According to this embodiment, the radio receiver 140 and the radio transmitter 120 are arranged within the motor housing 900 of the electric motor 800. The sensor 150 is, for example, a temperature sensor and is attached to the rotor 906. The radio transmitter 120 is, for example, attached to the rotor 906, and the radio receiver 140 is attached to an inner wall of the motor housing 900. Optionally, the radio receiver 140 is connected or connectable to a control unit of the vehicle via a connecting element 908, for example, via a cable routed through a wall of the motor housing 900.

[0051] Fig. Figure 10 shows a schematic side view of a machine device 100 according to an exemplary embodiment. This could be the one described in Fig. 1, Fig. 5 or Fig. The machine device 100 described in section 8 is a different machine device, with the difference that the machine device 100 according to this embodiment is designed as a shock absorber 1000 for a vehicle.

[0052] The shock absorber comprises a piston 1003 and a piston chamber 1005. The piston chamber is filled with a medium, for example, air or oil. The radio transmitter 120 is, by way of example, arranged inside the piston chamber 1005 or on or below a base of the piston chamber 1005. Thus, the radio transmitter 120 is optionally enclosed by a medium, which can correspond to the lubricating medium described with reference to the preceding figures. The radio receiver 140 is, by way of example, arranged outside the piston chamber 1005 adjacent to a piston rod of the piston 1003. Thus, the radio signal transmitted by the radio transmitter 120 passes through a sealing ring with which the piston 1003 slides along an inner wall of the piston chamber 1005 when the piston 1003 moves. The sensor coupled to the radio transmitter 120 is, for example, designed as a temperature sensor or pressure sensor.

[0053] Optionally, the radio transmitter 120 and the radio receiver 140 are each designed as transmit-receive units, enabling bidirectional data transmission.

[0054] Fig. Figure 11 shows a schematic side view of a machine device 100 according to an exemplary embodiment. This could be the one described in Fig. The machine device 100 described in section 10, however, is in the form of an additional shock absorber 1100. As shown by Fig. As described in section 10, radio transmitters and radio receivers can be arranged at suitable positions within a housing of the shock absorber 1100.

[0055] Fig. Figure 12 shows a schematic side view of a machine device 100 according to an exemplary embodiment. This could be the one described in Fig. The machine device 100 described in section 10, however, is in the form of an additional shock absorber 1200. As shown by Fig. As described in section 10, radio transmitters and radio receivers can be arranged at suitable positions within a housing of the shock absorber 1200.

[0056] Fig. Figure 13 shows a flowchart of a method 1300 according to an embodiment for transmitting a signal for a machine component of a machine. This method 1300 can be controlled and / or carried out using the machine device described in one of the preceding figures.

[0057] Method 1300 includes a transmit step 1305, in which a radio signal is transmitted as described in the preceding figures. The radio signal propagates through a medium, which can be, for example, an oil mixture. Optionally, method 1300 includes a read step 1310, in which a sensor value is read and subsequently transmitted using the radio signal. In a receive step 1315, the radio signal is received by means of a radio receiver. Reference sign 100 machine devices 105 machine 110 machine components 115 Admissions Chamber 120 Communication module 125 Lubricant 127 Signal 130 gearbox 135 jet rudder 136 Gear shaft 137 Drive shaft 138 propulsion propellers 139 Propeller shaft 140 recipients 145 further radio signal 150 Sensor 155 wall 160 seawater 165 Engine room 170 Construction 172 Gearbox housings 175 critical position 200 excerpt 400 ship 405 thruster 500 wind turbines 502 Wind turbine gearboxes 505 Generator 510 wind turbine propellers 603 Rotor shaft 605 Output shaft 700 Generator shaft 705 Oil mist 800 electric motor 900 engine housing 902 Stator 904 Motor shaft 906 Rotor 908 Connecting element 1000 shock absorbers 1003 pistons 1005 piston chamber 1100 shock absorbers 1200 shock absorbers 1300 methods for transmitting a signal Step 1305 of sending Step 1310 of the reading process 1315 Step of Receiving

Claims

[1] Machine device (100) for a machine (105), wherein the machine device (100) has the following features: at least one machine component (110); a gearbox housing (172), wherein at least a section of the machine component (110) and a lubricating medium (125) for lubricating the machine component (110) are arranged in the gearbox housing (172), wherein an interior of the gearbox housing (172) is divided into separate chambers by components of the machine device (100) located at a critical position, which are fluidically connected to each other only via bearing gaps or labyrinthine structural elements; a communication module (120) arranged in the gearbox housing (172), which is configured to send a signal (127) into the lubricating medium (125); and a receiver (140) configured to receive the signal (127), wherein the receiver (140) and the communication module (120) are arranged in different chambers of the gearbox housing (172); characterized by , that the signal (127) is formed to pass the critical position (175). [2] Machine device (100) according to claim 1, characterized by , that signal (127) represents a sensor value. [3] Machine device (100) according to any one of the preceding claims, characterized by , that the communication module (120) is part of a transceiver which further comprises another communication module designed to receive another signal (145). [4] Machine device (100) according to any one of the preceding claims, characterized by, that the receiver (140) is part of another transceiver which further comprises another communication module (120) configured to transmit another signal (145). [5] Machine device (100) according to any one of the preceding claims, characterized by , that at least one wall (155) of a receiving chamber (115) of the gearbox housing (172) has a metallic material. [6] Machine device (100) according to any one of the preceding claims, characterized by , that the lubricating medium (125) is a fluid, gel, grease, oil and / or material-air mixture. [7] Machine device (100) according to any one of the preceding claims, characterized by a sensor (150) designed to sens the sensor value. [8] Machine device (100) according to any one of the preceding claims, characterized by, that the communication module (120) is designed to transmit the signal (127) at a transmission frequency of 100 MHz to 100 GHz. [9] Machine device (100) according to one of the preceding claims, which is configured as a gearbox (130; 502) or as a shock absorber (1000), electric motor (800) or bearing for a machine (105). [10] Machine device (100) according to one of the preceding claims, wherein a receiving chamber (115) of the gearbox housing (172) is completely or partially filled with the lubricating medium (125). [11] Method (1300) for transmitting a signal for a machine component (110) to a machine (105), wherein the method (1300) comprises the following steps: Sending (1305) the signal (127), representing a sensor value, by means of a communication module (120) arranged in a gearbox housing (172), wherein at least a section of the machine component (110) and a lubricating medium (125) for lubricating the machine component (110) are arranged in the gearbox housing (172), wherein an interior of the gearbox housing (172) is divided into separate chambers by components of the machine device (100) located at a critical position, which are fluidically connected to each other only via bearing gaps or labyrinthine structural elements, wherein the signal (127) is sent as a radio signal (127) into the lubricating medium (125); and Receiving the signal (127) using a receiver (140), wherein the receiver (140) and the communication module (120) are arranged in different chambers of the gearbox housing (172); characterized by , that the signal (127) is formed to pass the critical position (175).

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