Connection structure and industrial plant

Abstract

A connection structure and industrial equipment, the connection structure comprises: a first drive module and a second drive module, the first drive module is used for being connected with a power supply, the second drive module is used for being connected with a load, and the first drive module and the second drive module are wirelessly transmitted with a drive voltage through a first coupling coil module;A first control module and a second control module, the second control module is used for being connected with the load, and the first control module and the second control module are wirelessly transmitted with a control signal through a second coupling coil module, and the control signal is used for controlling the load. Through the first coupling coil module, the non-contact transmission of the drive voltage can be realized, and through the second coupling coil module, the non-contact transmission of the control signal can be realized, so that the non-contact power supply and the non-contact control of the load can be realized at the same time, to facilitate the flexible work of the load.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of wireless transmission, and particularly relates to a connecting structure and an industrial device. BACKGROUND

[0002] At present, a swing arm driven by a motor is an important equipment indispensable for industrial automation. The swing arm is usually rotationally connected to a base and is provided with a plurality of motors to meet the operation requirements of the equipment.

[0003] When the number of motors is large, a plurality of motors need a large number of power lines and data lines to respectively transmit electric energy and control signals. If a lead wire type electric signal transmission mode is used, the transmission structure of the swing arm cannot rotate at a large angle, and the wires are prone to breakage. Although a slip ring type transmission structure can rotate at a large angle, the slip ring type transmission structure is unstable in signal transmission, and long-time abrasion can easily cause poor communication. SUMMARY

[0004] The application aims to provide a connecting structure and an industrial device, and aims to solve the problem of unstable electric signal transmission between a swing arm and a base in a conventional swing arm.

[0005] A first aspect of the application provides a connecting structure, comprising: a first driving module and a second driving module, the first driving module being configured to be connected to a power supply, the second driving module being configured to be connected to a load, the first driving module and the second driving module being configured to wirelessly transmit a driving voltage through a first coupling coil module; a first control module and a second control module, the second control module being configured to be connected to the load, the first control module and the second control module being configured to wirelessly transmit a control signal through a second coupling coil module, the control signal being configured to control the load.

[0006] In one embodiment, the connecting structure comprises a base and a movable part, the movable part being rotationally connected to the base, the first coupling coil module comprising a first driving coil and a second driving coil that are coupled to each other, and the second coupling coil module comprising a first communication coil and a second communication coil that are coupled to each other; the first driving coil, the first communication coil, the first driving module and the first control module being fixed on the base, and the second driving coil, the second communication coil, the second driving module and the second control module being fixed on the movable part.

[0007] In one embodiment, the movable part comprises a metal base plate, a side plate and a top plate, the metal base plate comprising opposite first and second surfaces, the first surface of the metal base plate being rotationally connected to the base through a rotational slip ring, and the second surface of the metal base plate being connected to the top plate through the side plate.

[0008] In one embodiment, the second driving coil is fixed on a first surface of the metal base plate, and the first driving coil is fixed on the base under the second driving coil.

[0009] In one embodiment, the metal base plate is provided with an opening in the center, the first communication coil is located between the metal base plate and the top plate, and is fixed on the base through a first connecting piece passing through the opening of the metal base plate, and the second communication coil is located between the first communication coil and the top plate, and is fixed on a second surface of the metal base plate through a second connecting piece.

[0010] In one embodiment, the first driving module includes a PWM control unit and an inverter unit; the PWM control unit is connected with a first end of the inverter unit, and a second end of the inverter unit is connected with a first end of the first coupling coil module; the PWM control unit is used for generating and outputting a PWM driving signal according to a PWM control signal, and the PWM driving signal is used for controlling the inverter unit to generate and provide the driving voltage to the first coupling coil module.

[0011] In one embodiment, the first coupling coil module is used for generating and outputting an induced voltage to the second driving module based on the driving voltage; the second driving module includes a rectifier unit and a filter unit, a first end of the rectifier unit is connected with a second end of the first coupling coil module, a second end of the rectifier unit is connected with the filter unit, and the rectifier unit is used for generating a working voltage based on the induced voltage.

[0012] In one embodiment, the first control module includes a first control unit and a first signal processing unit, and the second control module includes a second signal processing unit and a second control unit; the first control unit is connected with a first end of the second coupling coil module through the first signal processing unit, and the second control unit is connected with a second end of the second coupling coil module through the second signal processing unit; the first signal processing unit and the second signal processing unit are both used for modulating or demodulating the control signal.

[0013] In one embodiment, the first control unit is also connected with the first driving module, and the second control unit is also connected with the second driving module and the load; the first control unit is also used for controlling the first driving module to output the driving voltage, and the second control unit is also used for sampling the working voltage output by the second driving module.

[0014] The second aspect of the embodiment of the application provides an industrial device, including a power supply, a swing arm and a connecting structure as described above, and the power supply is connected with the swing arm through the connecting structure.

[0015] The beneficial effects of the embodiments of the present application compared with the prior art are that the first coupling coil module can realize non-contact transmission of driving voltage, and the second coupling coil module can realize non-contact transmission of control signal, so that non-contact power supply and non-contact control can be simultaneously loaded to facilitate flexible work of the load. The transmission of electrical signal through the coil is more stable and durable than the transmission of electrical signal through a slip ring or a lead. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A schematic diagram of a connection structure provided by an embodiment of the present application is shown in FIG. 1.

[0017] Figure 2 A schematic diagram of a base and a movable component provided by an embodiment of the present application is shown in FIG. 2.

[0018] Figure 3 A structural schematic diagram of a coupling coil module provided by an embodiment of the present application is shown in FIG. 3.

[0019] Figure 4 A schematic diagram of a driving module provided by an embodiment of the present application is shown in FIG. 4.

[0020] Figure 5 A circuit schematic diagram of a first driving module provided by an embodiment of the present application is shown in FIG. 5.

[0021] Figure 6 A circuit schematic diagram of a second driving module provided by an embodiment of the present application is shown in FIG. 6.

[0022] Figure 7 A schematic diagram of a control module provided by an embodiment of the present application is shown in FIG. 7.

[0023] Figure 8 Another schematic diagram of a connection structure provided by an embodiment of the present application is shown in FIG. 8.

[0024] Figure 9 A schematic diagram of an industrial device provided by an embodiment of the present application is shown in FIG. 9. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0026] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0029] Figure 1 A schematic diagram of a connection structure provided in an embodiment of this application is shown. For ease of explanation, only the parts relevant to this embodiment are shown, and the details are as follows:

[0030] The connection structure 10 includes: a first drive module 100 and a second drive module 200. The first drive module 100 is connected to the power supply 20, and the second drive module 200 is connected to the load 30. The first drive module 100 and the second drive module 200 wirelessly transmit drive voltage through a first coupling coil module 300. A first control module 400 and a second control module 500 are also included. The second control module 500 is connected to the load 30, and the first control module 400 and the second control module 500 wirelessly transmit control signals through a second coupling coil module 600. The control signals are used to control the load 30.

[0031] It is understandable that the first coupling coil module 300 enables contactless transmission of the driving voltage, and the second coupling coil module 600 enables contactless transmission of the control signal. The connection structure 10 thus simultaneously provides power to the load 30 and controls the load 30. Transmitting electrical signals via coils is more stable and durable than transmitting them via slip rings or leads.

[0032] In one embodiment, such as Figure 2As shown, the connecting structure 10 includes a base 11 and a movable part 12, the movable part 12 is rotatably connected to the base 11, the first coupling coil module 300 includes a first driving coil 310 and a second driving coil 320 coupled to each other, and the second coupling coil module 600 includes a first communication coil 610 and a second communication coil 620 coupled to each other. The first driving coil 310, the first communication coil 610, the first driving module 100 and the first control module 400 are fixed on the base 11, and the second driving coil 320, the second communication coil 620, the second driving module 200 and the second control module 500 are fixed on the movable part 12.

[0033] It can be understood that the load 30 can be connected with the movable part 12, or the load 30 is installed on the movable part 12, so as to transmit electric energy to the load 30 and control the load 30 through the movable part 12.

[0034] In an embodiment, as shown, Figure 3 The movable part 12 includes a metal bottom plate 121, a side plate 122 and a top plate 123, the metal bottom plate 121 includes opposite first and second surfaces, the first surface of the metal bottom plate 121 is rotatably connected to the base 11, and the second surface of the metal bottom plate 121 is connected to the top plate 123 through the side plate 122. The second driving coil 320 is fixed on the first surface of the metal bottom plate 121, and the first driving coil 310 is fixed on the base 11 below the second driving coil 320.

[0035] The center of the metal bottom plate 121 is provided with an opening, the first communication coil 610 is located between the metal bottom plate 121 and the top plate 123, and is fixed on the base 11 through a first connecting piece 13 passing through the opening of the metal bottom plate 121, and the second communication coil 620 is located between the first communication coil 610 and the top plate 123, and is fixed on the second surface of the metal bottom plate 121 through a second connecting piece 14.

[0036] The side plate 122 can be cylindrical or other shapes, and the cylindrical side plate 122 can be used to cooperate with the top plate 123 and the metal bottom plate 121 to form a cylindrical accommodating cavity for accommodating the first communication coil 610 and the second communication coil 620. The materials of the side plate 122 and the top plate 123 can also include metal materials, so as to realize the absorption and isolation of electromagnetic signals.

[0037] It can be understood that the first coupling coil module 300 and the second coupling coil module 600 will generate electromagnetic signals during operation. The metal bottom plate 121 can maximize the isolation of the first coupling coil module 300 and the second coupling coil module 600, and avoid mutual influence of the first coupling coil module 300 and the second coupling coil module 600 during transmission of electromagnetic signals. The movable part 12 can rotate about the first connecting piece 13 as the axis.

[0038] In some embodiments, the metal bottom plate 121 includes a first metal layer 124 and a second metal layer 125 arranged in layers. The first metal layer 124 forms a receiving cavity with the side plate 122 and the top plate 123. The first communication coil 610 is further provided with a third metal layer 611 between the bottom plate. The third metal layer 611 is fixed on the base 11 through the first connecting piece 13 passing through the opening of the metal bottom plate 121, and the first communication coil 610 is fixed on the third metal layer 611.

[0039] The materials of the side plate 122, the top plate 123, the first metal layer 124, the second metal layer 125 and the third metal layer 611 include at least one of SPCC cold-rolled steel and 45 steel. For example, the materials of the side plate 122, the top plate 123 and the first metal layer 124 include SPCC cold-rolled steel, and the materials of the second metal layer 125 and the third metal layer 611 include 45 steel.

[0040] In some embodiments, the first coupling coil module 300 is further provided with a back magnet for isolating electromagnetic signals, which can avoid mutual interference with the second coupling coil module 600 and at the same time enhance the transmission efficiency of electric energy.

[0041] In an embodiment, as shown in Figure 4 The first driving module 100 includes a PWM control unit 110 and an inverter unit 120. The PWM control unit 110 is connected to the first end of the inverter unit 120, and the second end of the inverter unit 120 is connected to the first end of the first coupling coil module 300. The PWM control unit 110 is used to generate and output a PWM driving signal according to a PWM control signal, and the PWM driving signal is used to control the inverter unit 120 to generate and provide a driving voltage to the first coupling coil module 300.

[0042] It can be understood that, since the electric energy needs to be transmitted through the coil, the voltage needs to be inverted to obtain an alternating driving voltage to transmit the electric energy through the first coupling coil module 300. The PWM control signal can be provided by an external device or by another controller. The PWM control unit 110 can control the voltage of the driving voltage output by the inverter unit 120 through the PWM driving signal according to the PWM control signal.

[0043] In some embodiments, as shown in Figure 5As shown, the inverter unit 120 includes a first switch tube Q1, a second switch tube Q2, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a first diode D1 and a second diode D2.

[0044] A first end of the first capacitor C1 is connected with the first coupling coil module 300, a second end of the first capacitor C1 is connected with a first end of the second capacitor C2 and a first end of the third capacitor C3 respectively, a second end of the second capacitor C2 is connected with a first end of the first switch tube Q1 and the power supply 20 through the first resistor R1, the power supply 20 is used to provide a first power supply voltage V1 to the first end of the first switch tube Q1, a second end of the first switch tube Q1 is connected with the second end of the first capacitor C1 and a first end of the second switch tube Q2 respectively, a second end of the second switch tube Q2 is grounded, a second end of the third capacitor C3 is connected with the second end of the second switch tube Q2 through the second resistor R2.

[0045] A first end of the third resistor R3 is connected with a control end of the first switch tube Q1, a second end of the third resistor R3 is connected with the second end of the first switch tube Q1, a first end of the fourth resistor R4 is connected with a control end of the second switch tube Q2, a second end of the fourth resistor R4 is connected with the second end of the second switch tube Q2. A first end of the fifth resistor R5 is connected with the control end of the first switch tube Q1, a second end of the fifth resistor R5 is connected with a first output end of the PWM control unit 110, a first end of the sixth resistor R6 is connected with the control end of the second switch tube Q2, a second end of the sixth resistor R6 is connected with a second output end of the PWM control unit 110.

[0046] An anode of the first diode D1 is connected with the control end of the first switch tube Q1 through the seventh resistor R7, a cathode of the first diode D1 is connected with the first output end of the PWM control unit 110, an anode of the second diode D2 is connected with the control end of the second switch tube Q2 through the eighth resistor R8, a cathode of the second diode D2 is connected with the second output end of the PWM control unit 110.

[0047] It can be understood that by controlling the duty cycle of the PWM drive signal provided to the first switch tube Q1 and the second switch tube Q2, the adjustment of the driving voltage can be realized, the greater the duty cycle of the PWM drive signal provided to the first switch tube Q1, the higher the driving voltage, the greater the duty cycle of the PWM drive signal provided to the second switch tube Q2, the lower the driving voltage.

[0048] In some embodiments, as Figure 5As shown, the PWM control unit 110 includes a PWM control chip U1, which is configured to generate and output a PWM driving signal according to a received PWM control signal.

[0049] In an embodiment, as shown in Figure 4 The first coupling coil module 300 is configured to generate and output an induced voltage to the second driving module 200 based on the driving voltage. The second driving module 200 includes a rectification unit 210 and a filter unit 220. The first end of the rectification unit 210 is connected to the second end of the first coupling coil module 300, and the second end of the rectification unit 210 is connected to the filter unit 220. The rectification unit 210 is configured to generate a working voltage based on the induced voltage.

[0050] The rectification unit 210 can rectify the induced current output by the first coupling coil module 300 to obtain a direct-current working voltage. The filter unit 220 can filter the working voltage to remove alternating components in the working voltage.

[0051] In some embodiments, as shown in Figure 6 The rectification unit 210 includes a full-bridge rectification circuit composed of diodes, and the filter unit 220 includes a plurality of parallel filter capacitors. As shown in Figure 6 The full-bridge rectification circuit includes diodes D4, D5, D64, and D7, and the filter unit 220 includes filter capacitors D6, D7, D8, D9, D10, and D11 connected in parallel.

[0052] In an embodiment, as shown in Figure 7 The first control module 400 includes a first control unit 410 and a first signal processing unit 420, and the second control module 500 includes a second signal processing unit 520 and a second control unit 510. The first control unit 410 is connected to the first end of the second coupling coil module 600 through the first signal processing unit 420, and the second control unit 510 is connected to the second end of the second coupling coil module 600 through the second signal processing unit 520. The first signal processing unit 420 and the second signal processing unit 520 are both configured to modulate or demodulate a control signal.

[0053] The first control unit 410 can include a microcontroller unit (MCU), and the first signal processing unit 420 can include a field programmable gate array (FPGA).

[0054] The first control unit 410 can be used for logical control and data processing, and the first signal processing unit 420 can be used for signal modulation, amplification, and the like, or signal demodulation, and the like.

[0055] It can be understood that the first control module 400 and the second control module 500 can realize bidirectional communication of information through a signal optimization algorithm.

[0056] In an embodiment, the first control unit 410 is further connected with the first driving module 100, and the second control unit 510 is further connected with the second driving module 200 and the load 30. The first control unit 410 is further used for controlling the first driving module 100 to output a driving voltage, and the second control unit 510 is further used for sampling the working voltage output by the second driving module 200.

[0057] It can be understood that the first control unit 410 can output a PWM control signal to control the first driving module 100 to output a driving voltage, and the second control unit 510 can sample the working voltage and feed back to the first control unit 410 to realize feedback control of the working voltage.

[0058] The second control unit 510 can be further connected with the load 30 to control the working of the load 30.

[0059] In an embodiment, as shown in Figure 7 The second control module 500 further includes a plurality of voice coil driving units 530 and a plurality of step driving units 540 connected with the second control unit 510, and the load 30 includes a plurality of voice coil motors 31 and a plurality of step motors 32. The voice coil driving unit 530 is used for being connected with the voice coil motor 31 and driving the voice coil motor 31 to work according to a control signal, and the step driving unit 540 is used for being connected with the step motor 32 and driving the step motor 32 to work according to a control signal.

[0060] When the load 30 is a swing arm, the swing arm can be driven to operate correspondingly through the voice coil motor 31 and the step motor 32.

[0061] In some embodiments, the voice coil driving unit 530 and the step driving unit 540 each include a corresponding driving circuit board.

[0062] In some embodiments, the load 30 includes two voice coil motors 31 and two step motors 32, and the second control module 500 includes two corresponding voice coil driving units 530 and two step driving units 540.

[0063] In an embodiment, as shown in Figure 8As shown, the industrial equipment further comprises an ECAT communication module 700, which is connected with the first control module 400, and is configured to communicate with an external device, so as to control the connecting structure 10 according to an external signal.

[0064] The ECAT communication module 700 can communicate with the external device, so as to realize remote control of the load 30.

[0065] Figure 9 Fig. 1 shows a structural schematic diagram of an industrial equipment according to an embodiment of the present application. For the convenience of description, only parts related to the embodiment are shown, and the details are as follows:

[0066] The industrial equipment 40 comprises a power supply 20, a swing arm 50, and the connecting structure 10 as described above, and the power supply 20 is connected with the swing arm 50 through the connecting structure 10.

[0067] The swing arm 50 is the load 30 in the industrial equipment 40. The power supply 20 can supply power to the swing arm 50 through the connecting structure 10, and the connecting structure 10 can also be used to control the swing arm 50 to work.

[0068] It can be clearly understood by those skilled in the art that, for the convenience and brevity of description, only the above-mentioned division of each functional unit and module is exemplified, and in actual application, the above-mentioned functions can be completed by different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of software functional unit. In addition, the specific names of each functional unit and module are only for the convenience of mutual distinction, and are not used to limit the protection scope of the present application. The specific working process of the units and modules in the above system can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0069] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described or recorded in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0070] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not limit them; although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A connection structure characterized by comprising: The application relates to a wireless power transmission device. The device comprises a first driving module and a second driving module, the first driving module is used for being connected with a power supply, the second driving module is used for being connected with a load, and the first driving module and the second driving module are wirelessly connected through a first coupling coil module to transmit a driving voltage. The device further comprises a first control module and a second control module, the second control module is used for being connected with the load, the first control module and the second control module are wirelessly connected through a second coupling coil module to transmit a control signal, and the control signal is used for controlling the load. The connecting structure comprises a base and a movable part, the movable part is rotationally connected to the base, the load is connected to the movable part, the first coupling coil module comprises a first driving coil and a second driving coil which are coupled to each other, and the second coupling coil module comprises a first communication coil and a second communication coil which are coupled to each other. The first driving coil, the first communication coil, the first driving module and the first control module are fixed to the base, and the second driving coil, the second communication coil, the second driving module and the second control module are fixed to the movable part.

2. The connection structure according to claim 1, wherein The movable part comprises a metal base plate, a side plate and a top plate, the metal base plate comprises a first surface and a second surface which are opposite to each other, the first surface of the metal base plate is rotationally connected to the base through a rotating slip ring, and the second surface of the metal base plate is connected to the top plate through the side plate.

3. The connection structure according to claim 2, wherein The second driving coil is fixed to the first surface of the metal base plate, and the first driving coil is fixed to the base below the second driving coil.

4. The connection structure according to claim 2, wherein The metal base plate is provided with an opening in the center, the first communication coil is located between the metal base plate and the top plate and is fixed to the base through a first connecting piece penetrating through the opening of the metal base plate, and the second communication coil is located between the first communication coil and the top plate and is fixed to the second surface of the metal base plate through a second connecting piece.

5. The connection structure according to claim 1, wherein The first driving module comprises a PWM control unit and an inverter unit. The PWM control unit is connected with a first end of the inverter unit, and a second end of the inverter unit is connected with a first end of the first coupling coil module. The PWM control unit is used for generating and outputting a PWM driving signal according to a PWM control signal, the PWM driving signal is used for controlling the inverter unit to generate and provide the driving voltage to the first coupling coil module.

6. The connection structure according to Claim 1, wherein The first coupling coil module is used for generating and outputting an induced voltage to the second driving module based on the driving voltage, the second driving module comprises a rectifier unit and a filter unit, a first end of the rectifier unit is connected with a second end of the first coupling coil module, a second end of the rectifier unit is connected with the filter unit, and the rectifier unit is used for generating a working voltage based on the induced voltage.

7. The connection structure according to any one of claims 1 to 6, wherein The first control module comprises a first control unit and a first signal processing unit, and the second control module comprises a second signal processing unit and a second control unit. The first control unit is connected with the first end of the second coupling coil module through the first signal processing unit, and the second control unit is connected with the second end of the second coupling coil module through the second signal processing unit; The first signal processing unit and the second signal processing unit are both used for modulating or demodulating the control signal.

8. The connection structure according to claim 7, wherein The first control unit is also connected with the first driving module, and the second control unit is also connected with the second driving module and the load. The first control unit is also used for controlling the first driving module to output the driving voltage, and the second control unit is also used for sampling the working voltage output by the second driving module.

9. An industrial plant, characterized in that The connection structure comprises a power supply, a load and the connection structure as claimed in any one of claims 1 to 8, and the power supply is connected with the load through the connection structure.

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