A portable hand-operated box for detecting a hoisting power supply circuit of a fan

Abstract

The utility model discloses a portable hand operation box for fan hoisting power supply loop detection relates to fan control field, solves the safety problem that manual change line brought. Portable hand operation box is detachable connection through heavy load connector and cabin cabinet adaptation socket, and emergency stop button and cabin enable button series connection access power supply safety branch, and each branch output and heavy load connector are connected. Without changing cabin cabinet internal terminal or short -circuit wire, only through the adaptation connection of hand operation box and cabin cabinet, can realize safety chain closure, and the series connection design of emergency stop button can cut off branch quickly. Each button is inserted into the power supply safety branch, lubrication system signal branch, hydraulic system signal branch, yaw control signal branch of control circuit board's corresponding respectively, and the operator only sends control signal through hand operation box button, and the signal is transmitted to the corresponding components of cabin cabinet through control circuit board branch, heavy load connector, does not need direct contact cabin cabinet, reduces the detection failure caused by operation failure.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine control, and in particular to a portable hand-operated box for detecting the power supply circuit of wind turbine hoisting. Background Technology

[0002] In a wind turbine generator set, the gearbox lubrication pump is responsible for lubricating the gears inside the gearbox, the hydraulic system is responsible for lubricating the rotating parts of the generator set, and the yaw motor is responsible for driving the yaw of the generator set.

[0003] The operation of these components depends on the closure of the safety chain circuit controlling the power supply to the unit, ensuring successful power supply to the components. During the unit's installation phase, engineers need to short-circuit several terminals inside the nacelle cabinet with wires to trigger the safety chain relay using the principle of short circuit, thereby closing the safety chain.

[0004] The drawbacks of rewiring the engine room cabinet are that the terminals to be connected are usually densely distributed and have small openings. Inexperienced operators are prone to making incorrect or loose connections, leading to the safety chain failing to close properly and the main circuit power supply being interrupted. After the hoisting and commissioning phase, personnel must remove any short-circuited wires. If any wires are missed, the safety chain will partially fail, affecting the operation of subsequent units. Furthermore, after the main circuit power is supplied, personnel must manually operate the switches on the engine room cabinet that control the gearbox oil pump motor, hydraulic system, and yaw motor. Some of these switches control high-current circuits, posing a certain risk to personnel during operation.

[0005] Therefore, providing a safe and efficient power supply circuit detection solution is a technical problem that urgently needs to be solved by those in this field. Utility Model Content

[0006] The purpose of this invention is to provide a portable hand-operated box for testing the power supply circuit of a wind turbine hoisting system, thereby solving the safety problems caused by manual rewiring.

[0007] To solve the above technical problems, this utility model provides a portable hand-operated box for testing the power supply circuit of wind turbine hoisting, including: a housing, an operation button group, a control circuit board, and a heavy-duty connector; the housing has an internal mounting cavity for fixing the control circuit board, the operation button group and the heavy-duty connector are located on the outside of the housing, and the heavy-duty connector is detachably connected to a matching adapter socket on the wind turbine nacelle cabinet. The control circuit board includes: a power supply safety branch for providing operating voltage, a lubrication system signal branch for transmitting gearbox lubrication system control signals, a hydraulic system signal branch for transmitting hydraulic system power supply control signals, and a yaw control signal branch for transmitting yaw action control signals; the output terminals of each branch are connected to the heavy-duty connector. The operation button group includes: an emergency stop button for triggering an emergency stop and a cabin enable button for enabling the main power supply circuit. The emergency stop button and the cabin enable button are connected in series to the power supply safety branch. A gearbox lubrication control button for controlling the start and stop of the gearbox lubrication system is connected to the signal branch of the lubrication system. A hydraulic system power supply button for controlling the on / off of power supply to the hydraulic system is connected to the signal branch of the hydraulic system. A yaw enable button for providing an enable signal for yaw action and a yaw button for controlling the yaw direction are connected in series with the yaw control signal branch.

[0008] Optionally, in the portable hand-operated box for detecting the power supply circuit of the wind turbine hoisting described above, the power supply safety branch includes: a relay and a diode; The first interface of the heavy-duty connector is used to connect to the DC power supply terminal of the external cabin cabinet. The first interface of the heavy-duty connector is connected in series with the pins of the emergency stop button and the cabin enable button, and then connected to the first end of the coil of the relay. The second end of the coil is connected to the third interface of the heavy-duty connector. The first normally open contact of the relay is connected to the fifth interface of the heavy-duty connector. The second normally open contact of the relay is connected to the sixth interface of the heavy-duty connector. The third, fifth, and sixth interfaces are used to connect to the power supply terminal of the safety chain relay of the external cabin cabinet. The diode is connected in parallel across the two ends of the coil of the relay, and the anode of the diode is connected to the second end of the coil, and the cathode is connected to the first end of the coil. The emergency stop button is a self-locking button, and the cabin enable button is a self-resetting button with an indicator light. After the emergency stop button is pressed, it remains in the disengaged self-locking state until it is manually rotated to reset.

[0009] Optionally, in the portable hand-operated box for detecting the power supply circuit of the wind turbine hoisting described above, the input end of the lubrication system signal branch is connected to the first end of the power supply safety branch; The gearbox lubrication control button is a self-locking button with an indicator light. Its first pin is connected to the input terminal of the lubrication system signal branch, and its second pin is connected to the second interface of the heavy-duty connector. The second interface is used to connect the power supply terminal of the gearbox lubrication pump drive circuit of the external engine compartment cabinet.

[0010] Optionally, in the portable hand-operated box for detecting the power supply circuit of the wind turbine hoisting described above, the input end of the hydraulic system signal branch is connected to the second end of the power supply safety branch; The hydraulic system power supply button is a self-locking button with an indicator light. Its first pin is connected to the input terminal of the hydraulic system signal branch, and its second pin is connected to the fourth interface of the heavy-duty connector. The fourth interface is used to connect the power supply terminal of the hydraulic system power supply circuit of the external engine room cabinet.

[0011] Optionally, in the portable hand-operated box for detecting the power supply circuit of wind turbine hoisting described above, the input end of the yaw control signal branch is connected to the third end of the power supply safety branch; The yaw enable button is a self-reset button with an indicator light. Its first pin is connected to the input terminal of the yaw control signal branch, and its second pin is connected to the common terminal of the yaw button. The yaw button is a three-position self-reset button, including a left yaw button, a right yaw button, and a fixed no-yaw position, with the fixed no-yaw position being the initial position of the switch; the output pin of the left yaw button is connected to the seventh interface of the heavy-duty connector, the output pin of the right yaw button is connected to the eighth interface of the heavy-duty connector, and the corresponding pin of the fixed no-yaw position is connected to the ninth interface of the heavy-duty connector; the seventh, eighth, and ninth interfaces are respectively used to connect the left yaw motor drive circuit, the right yaw motor drive circuit, and the grounding terminal of the external naval cabinet.

[0012] Optionally, in the portable handheld control box for testing the power supply circuit of the wind turbine hoisting described above, the left yaw button and the right yaw button of the yaw button are provided with a mechanical interlock structure, which only allows the single-direction gear to be connected; and the left yaw button and the right yaw button are jog buttons, which output an effective pulse signal during the continuous pressing period.

[0013] Optionally, in the portable handheld control box for detecting the power supply circuit of wind turbine hoisting described above, the yaw control signal branch further includes a yaw status indication branch, which includes a left yaw indicator light, a right yaw indicator light, and a no yaw status indicator light. The left yaw indicator light is connected in series between the left yaw output pin of the yaw button and ground, the right yaw indicator light is connected in series between the right yaw output pin of the yaw button and ground, and the no yaw status indicator light is connected in series between the no yaw position pin of the yaw button and ground, for synchronously indicating the current position status of the yaw button.

[0014] Optionally, in the aforementioned portable hand-operated box for testing the power supply circuit of wind turbine hoisting, the shell is made of engineering plastic or aluminum alloy, with an integrally formed anti-slip texture on the outer surface, and the side wall of the shell is provided with lifting lugs for hanging and storage; the outer side of the shell is provided with a raised operation panel, and the operation button group is embedded in the groove of the operation panel, and each button is arranged in layers according to function.

[0015] Optionally, in the aforementioned portable handheld control box for testing the power supply circuit of wind turbine hoisting, the heavy-duty connector is a waterproof and mis-insertion-proof aviation plug with no less than 9 pins, and a rubber sealing ring is provided at the connection between the outer shell and the housing; the mating end of the heavy-duty connector is provided with a positioning pin, and the adapter socket is provided with a corresponding positioning hole, and the positioning pin and the positioning hole are matched accordingly.

[0016] Optionally, in the portable handheld box for detecting the power supply circuit of the wind turbine hoisting described above, the control circuit board is also provided with a power filter capacitor, which is connected in parallel between the input terminal of the power supply safety branch and ground, and is used to filter out noise signals in the DC power supply.

[0017] This utility model provides a portable hand-operated box for testing the power supply circuit during wind turbine installation. It is detachably connected to the nacelle cabinet adapter socket via a heavy-duty connector. The emergency stop button and the nacelle enable button are connected in series to the power supply safety branch circuit, and the output terminals of each branch circuit are connected to the heavy-duty connector. Without modifying the internal terminals of the nacelle cabinet or shorting wires, the power supply safety branch circuit can be triggered by operating the nacelle enable button simply by connecting the hand-operated box to the nacelle cabinet, thereby achieving safety chain closure. The series design of the emergency stop button can quickly disconnect the branch circuit, completely avoiding debugging failures or safety chain malfunctions caused by rewiring. This ensures the reliability of the safety chain closure in the event of subsequent unit operation failures. Each button is connected to the corresponding power supply safety branch, lubrication system signal branch, hydraulic system signal branch, and yaw control signal branch of the control circuit board, eliminating the need to repeatedly switch between the nacelle cabinet terminals and switches. Operators only need to issue control signals through the buttons on the hand-held control box. The signals are transmitted to the corresponding components in the nacelle cabinet via the control circuit board branch and heavy-duty connectors. There is no need to directly contact the high-voltage, high-current circuits or dense terminals inside the nacelle cabinet, achieving physical isolation between operation and high-risk circuits. This structurally ensures operational safety, significantly reduces the skill threshold for operation, and reduces detection failures caused by operational errors. Attached Figure Description

[0018] To more clearly illustrate the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the control circuit board of a portable handheld control box for detecting the power supply circuit of a wind turbine hoisting, provided as an embodiment of this application. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] The core of this utility model is to provide a portable hand-operated box for testing the power supply circuit of a wind turbine hoisting system.

[0022] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] This embodiment provides a portable hand-operated box for detecting the power supply circuit of a wind turbine hoisting, including: a housing, an operation button group, a control circuit board 11, and a heavy-duty connector; the housing has an internal mounting cavity for fixing the control circuit board 11, the operation button group and the heavy-duty connector are located on the outside of the housing, and the heavy-duty connector is detachably connected to a matching adapter socket on the wind turbine nacelle cabinet. The control circuit board 11 includes: a power supply safety branch for providing operating voltage, a lubrication system signal branch for transmitting gearbox lubrication system control signals, a hydraulic system signal branch for transmitting hydraulic system power supply control signals, and a yaw control signal branch for transmitting yaw action control signals; the output terminals of each branch are connected to a heavy-duty connector. The operation button group includes: an emergency stop button for triggering an emergency stop and a cabin enable button for enabling the main power supply circuit. The emergency stop button and the cabin enable button are connected in series to the power supply safety branch. The gearbox lubrication control button is used to control the start and stop of the gearbox lubrication system and is connected to the lubrication system signal branch. A hydraulic system power supply button used to control the on / off of power supply to the hydraulic system, connected to the hydraulic system signal branch; A yaw enable button is used to provide an enable signal for yaw action, and a yaw button is used to control the yaw direction. The yaw enable button and the yaw button are connected in series to the yaw control signal branch.

[0024] In this embodiment, the housing has an internal mounting cavity for fixing the control circuit board 11, while the operation button assembly and heavy-duty connector are located on the outside of the housing. It should be noted that the mounting cavity is not merely for housing the control circuit board 11, but also to ensure the stability of each branch connection by fixing the circuit board and preventing poor circuit contact caused by field vibration. The operation button assembly and heavy-duty connector are located on the outside of the housing for easy connection by engineers. Furthermore, the housing, as an external protective structure, can reduce the impact of dust and collisions on internal components. This embodiment does not strictly limit the specific material and size of the housing, as long as it meets the requirements for fixation and portability.

[0025] The heavy-duty connector is detachably connected to the matching adapter socket on the wind turbine nacelle cabinet, and the output terminals of each branch of the control circuit board 11 are all connected to the heavy-duty connector. This detachable connection facilitates assembly and disassembly, adapting to rapid deployment in different hoisting scenarios. The connection of each branch output terminal to the heavy-duty connector enables control signal transmission to the nacelle cabinet, avoiding direct contact between engineers and the internal terminals. Furthermore, the selection of the heavy-duty connector must be suitable for the on-site working conditions of the wind turbine hoisting to ensure the stability of signal transmission; however, this embodiment does not limit the specific model, as long as it meets the connection and signal transmission requirements.

[0026] The control circuit board 11 integrates a power supply safety branch, a lubrication system signal branch, a hydraulic system signal branch, and a yaw control signal branch, with each branch having a clear and independent function.

[0027] First, the power supply safety branch provides the operating voltage. Its core purpose is to provide a safe and stable power supply for the entire manual control box. Simultaneously, through series connection with the emergency stop button and the engine room enable button, it enables and cuts off the main power supply circuit in emergencies, ensuring the safety chain is closed and operational safety is paramount. Second, the lubrication system signal branch, hydraulic system signal branch, and yaw control signal branch achieve independent control of each function through dedicated branches, avoiding interference between different function signals. All branches rely on the basic power supply guarantee provided by the power supply safety branch.

[0028] Each button in the operation button group is connected to its corresponding branch circuit for one-to-one control.

[0029] First, the emergency stop button and the nacelle enable button are connected in series to the power supply safety branch, enabling start-up and emergency cut-off: the nacelle enable button triggers the main power supply circuit, and the emergency stop button can cut off this circuit at any time, ensuring convenient normal operation and ensuring rapid avoidance in abnormal situations. Second, the gearbox lubrication control button is connected to the lubrication system signal branch, and the hydraulic system power supply button is connected to the hydraulic system signal branch. Similarly, this enables precise control of each function. Engineers can press the corresponding button to trigger the signal transmission of the dedicated branch, thereby controlling the operation of the corresponding system in the nacelle cabinet. Third, the yaw enable button and the yaw button are connected in series to the yaw control signal branch to avoid accidental triggering of yaw actions and ensure the safety of yaw control.

[0030] Based on the above structural design, the core control logic of the manual control box in this embodiment is as follows: After connecting to the nacelle cabinet adapter socket via the heavy-duty connector, the engineer presses the nacelle enable button to activate the power supply safety branch, thereby triggering the wind turbine safety chain closure; subsequently, the lubrication system start / stop and the hydraulic system power supply switch can be controlled via the corresponding signal branches by pressing the gearbox lubrication control button and the hydraulic system power supply button, respectively; after pressing the yaw enable button, the yaw direction can be controlled via the yaw button to achieve the yaw action; if an abnormal situation occurs, pressing the emergency stop button will cut off the power supply safety branch and terminate all functions.

[0031] By connecting and controlling the power supply safety branch through heavy-duty connectors, there is no need to short-circuit the cabinet terminals, thus replacing manual rewiring operations.

[0032] This utility model provides a portable hand-operated box for testing the power supply circuit during wind turbine installation. It is detachably connected to the nacelle cabinet adapter socket via a heavy-duty connector. The emergency stop button and the nacelle enable button are connected in series to the power supply safety branch circuit, and the output terminals of each branch circuit are connected to the heavy-duty connector. Without modifying the internal terminals of the nacelle cabinet or shorting wires, the power supply safety branch circuit can be triggered by operating the nacelle enable button simply by connecting the hand-operated box to the nacelle cabinet, thereby achieving safety chain closure. The series design of the emergency stop button can quickly disconnect the branch circuit, completely avoiding debugging failures or safety chain malfunctions caused by rewiring. This ensures the reliability of the safety chain closure in the event of subsequent unit operation failures. Each button is connected to the corresponding power supply safety branch, lubrication system signal branch, hydraulic system signal branch, and yaw control signal branch of the control circuit board 11, eliminating the need to repeatedly switch between the nacelle cabinet terminals and switches. Operators only need to send control signals through the buttons on the hand-held control box. The signals are transmitted to the corresponding components in the nacelle cabinet via the control circuit board 11 branch and heavy-duty connectors. There is no need to directly contact the high-voltage, high-current circuits or dense terminals inside the nacelle cabinet, achieving physical isolation between operation and high-risk circuits. This structurally ensures operational safety, significantly reduces the skill threshold for operation, and reduces detection failures caused by operational errors.

[0033] According to the above embodiments, in a specific implementation scheme, such as Figure 1 As shown, the power supply safety branch includes: relay K50.1 and diode V50.1; The first interface P1 of the heavy-duty connector is used to connect the DC power supply terminal of the external cabin cabinet. The first interface of the heavy-duty connector is connected in series with the pins of the emergency stop button S50.0 and the cabin enable button S50.1, and then connected to the first end of the coil of relay K50.1. The second end of the coil is connected to the third interface P3 of the heavy-duty connector. The first end of the normally open contact K50.1 of relay K50.1 is connected to the fifth interface P5 of the heavy-duty connector. The second end of the normally open contact of relay K50.1 is connected to the sixth interface P6 of the heavy-duty connector. The third interface P3, the fifth interface P5, and the sixth interface P6 are used to connect the power supply terminal of the safety chain relay K50.1 of the external cabin cabinet. The diode V50.1 is connected in parallel across the coil of relay K50.1, and the anode of diode V50.1 is connected to the second end of the coil, and the cathode is connected to the first end of the coil. Among them, the emergency stop button S50.0 is a self-locking button, and the cabin enable button S50.1 is a self-resetting button with an indicator light; after pressing the emergency stop button S50.0, the emergency stop button S50.0 remains in the disengaged self-locking state until it is manually rotated to reset.

[0034] like Figure 1 As shown, the power input path is as follows: Heavy-duty connector first interface (external cabin cabinet DC power supply) → Emergency stop button S50.0 → Cabin enable button S50.1 → First terminal of relay K50.1 coil → Second terminal of relay K50.1 coil → Heavy-duty connector third interface (external cabin cabinet safety chain relay K50.1 power supply terminal), forming the drive circuit for relay K50.1 coil. It should be noted that the emergency stop button S50.0 and the cabin enable button S50.1 are connected in series. The coil drive circuit can only be activated when the emergency stop button S50.0 is in the reset state (conducting) and the cabin enable button S50.1 is pressed (conducting). This achieves a logic interlock between enable start and emergency cut-off, avoiding the risk of accidental triggering or failure to stop in an emergency.

[0035] Contact output path: Heavy-duty connector fifth interface (power supply terminal for external engine compartment cabinet safety chain relay K50.1) → first normally open contact of relay K50.1 → second normally open contact of relay K50.1 → sixth interface of heavy-duty connector (power supply terminal for external engine compartment cabinet safety chain relay K50.1), forming the power supply circuit for safety chain relay K50.1. When the coil is energized, the contacts close, safety chain relay K50.1 receives power, and the safety chain closes; when the coil is de-energized, the contacts open, safety chain relay K50.1 loses power, and the safety chain disconnects. This achieves isolation between operation and high-voltage circuits by controlling high-voltage circuits with low-voltage circuits.

[0036] The anode of diode V50.1 is connected to the second terminal of the coil, and the cathode is connected to the first terminal of the coil. The reverse high voltage generated at the moment the coil is de-energized can be discharged through diode V50.1 to avoid damaging components such as the emergency stop button S50.0 and the cabin enable button S50.1, thus ensuring the service life and operational stability of the branch components.

[0037] Standby state: Emergency stop button S50.0 is reset (on), cabin enable button S50.1 is not pressed (off), relay K50.1 coil drive circuit is open, coil is de-energized, normally open contact remains open, safety chain relay K50.1 is not powered, safety chain is in the off state. At this time, the indicator light of cabin enable button S50.1 is not energized, visually indicating the current disabled state.

[0038] Enabled Start-up State: When an engineer presses the cabin enable button S50.1 (the self-reset feature requires continuous pressing or keeping it on), the drive circuit is activated, the coil of relay K50.1 is energized, generating magnetic force that attracts the normally open contact. The safety chain relay K50.1 receives power through the fifth and sixth interfaces, closing the safety chain and enabling the main power supply circuit. At this time, the indicator light on the cabin enable button S50.1 illuminates, synchronously indicating successful enable. Engineers can then proceed to operate other function buttons. It should be noted that the self-reset design of the cabin enable button S50.1 is not intended to reduce ease of operation, but rather to avoid safety hazards caused by prolonged enable, i.e., requiring continuous confirmation of enable requirements to improve safety.

[0039] Emergency Stop Status: When the emergency stop button S50.0 is pressed, its self-locking characteristic keeps the button in an open-circuit state, immediately cutting off the drive circuit. The coil of relay K50.1 is de-energized, the normally open contact resets and opens, the safety chain relay K50.1 is de-energized, the safety chain disconnects, and the main power supply circuit terminates. The self-locking design of the emergency stop button S50.0 ensures that the circuit remains open in an emergency, avoiding secondary risks caused by accidental reset. It must be manually rotated to reset, ensuring the reliability of the emergency stop.

[0040] According to the above embodiments, in one specific implementation, the input terminal of the lubrication system signal branch is connected to the first terminal of the power supply safety branch; The gearbox lubrication control button S50.2 is a self-locking button with an indicator light. Its first pin is connected to the input terminal of the lubrication system signal branch, and its second pin is connected to the second interface P2 of the heavy-duty connector. The second interface is used to connect the power supply terminal of the gearbox lubrication pump drive circuit of the external engine compartment cabinet.

[0041] The input terminal of the lubrication system signal branch is connected to the first terminal of the power supply safety branch. The lubrication system signal branch can only obtain operating voltage when the power supply safety branch is active (engine compartment enable button S50.1 is pressed, emergency stop button S50.0 is reset), preventing accidental start-up of the lubrication system. The first pin of the gearbox lubrication control button S50.2 is connected to the branch input terminal, and the second pin is connected to the second interface of the heavy-duty connector. The button's on / off state directly controls the power supply to the lubrication pump drive circuit. When the button is pressed, the branch is active, and the signal is transmitted to the engine compartment lubrication pump drive circuit via the second interface, starting the lubrication pump. When the button is pressed again (self-locking reset), the branch is disconnected, and the lubrication pump stops running.

[0042] The indicator light on the button is connected in series with the button contacts. When the button is pressed and the branch circuit is connected, the indicator light is powered on and illuminates simultaneously, providing intuitive feedback that the lubrication system is in operation.

[0043] According to the above embodiments, in one specific implementation, the input end of the hydraulic system signal branch is connected to the second end of the power supply safety branch; The hydraulic system power supply button S50.3 is a self-locking button with an indicator light. Its first pin is connected to the input terminal of the hydraulic system signal branch, and its second pin is connected to the fourth interface P4 of the heavy-duty connector. The fourth interface is used to connect the power supply terminal of the hydraulic system power supply circuit of the external engine room cabinet.

[0044] The input end of the hydraulic system signal branch is connected to the second end of the power supply safety branch. When the power supply safety branch is in the conducting state (emergency stop button S50.0 is reset, engine room enable button S50.1 is pressed), the hydraulic system signal branch can obtain a stable working voltage, thus preventing the hydraulic system from starting erroneously when the main power supply circuit is not safely enabled.

[0045] The first pin of the hydraulic system power supply button S50.3 is connected to the branch input terminal, and the second pin is connected to the fourth interface of the heavy-duty connector. The power supply status of the hydraulic system power supply circuit is directly controlled by the mechanical on / off state of the button. When the button is pressed, the branch is turned on, and the power supply signal is transmitted to the hydraulic system power supply circuit of the engine room cabinet through the fourth interface to realize the power supply connection. When the button is pressed again (self-locking structure reset), the branch is turned off, and the power supply circuit is de-energized.

[0046] The indicator light on the button is connected in series with the internal contacts of the button. When the button is pressed and the branch circuit is connected, the indicator light is powered on and illuminates simultaneously, providing intuitive feedback that the hydraulic system has been powered.

[0047] According to the above embodiments, in one specific implementation scheme, the input terminal of the yaw control signal branch is connected to the third terminal of the power supply safety branch; The yaw enable button S50.4 is a self-reset button with an indicator light. Its first pin is connected to the input terminal of the yaw control signal branch, and its second pin is connected to the common terminal of the yaw button. The yaw button S50.5 is a three-position self-reset button, including a left yaw button S50.5, a right yaw button S50.5, and a fixed no-yaw position, with the fixed no-yaw position being the initial position of the switch. The output pin of the left yaw button S50.5 is connected to the seventh interface P7 of the heavy-duty connector, the output pin of the right yaw button S50.5 is connected to the eighth interface of the heavy-duty connector, and the corresponding pin of the fixed no-yaw position is connected to the ninth interface of the heavy-duty connector. The seventh interface P7, the eighth interface P8, and the ninth interface P9 are respectively used for the left yaw motor drive circuit, the right yaw motor drive circuit, and the grounding terminal of the external nacelle cabinet.

[0048] The yaw control signal branch input terminal is connected to the third terminal of the power supply safety branch. When the power supply safety branch is turned on (emergency stop button S50.0 is reset, and cabin enable button S50.1 is pressed), the yaw control signal branch can obtain working voltage to avoid yaw action being started erroneously when the main circuit is not safely enabled.

[0049] The yaw enable button S50.4 is connected in series between the input terminal of the yaw control signal branch and the common terminal of the yaw button S50.5. The power supply safety branch is on. If the yaw enable button S50.4 is not pressed, none of the positions of the yaw button S50.5 can form an effective control loop.

[0050] Gear control and interface transmission logic: The common terminal of the yaw button S50.5 is connected to the output terminal of the yaw enable button S50.4. The left / right yaw output pins are connected to the seventh / eighth interfaces respectively, and the no-yaw position pin is connected to the ninth interface (ground terminal). When switching to the left yaw position, the signal is transmitted to the left yaw motor drive circuit through the seventh interface; when switching to the right yaw position, the signal is transmitted to the right yaw motor drive circuit through the eighth interface; when in the no-yaw position, the pin is grounded through the ninth interface.

[0051] The indicator light of the yaw enable button S50.4 is connected in series with its own contacts. When the enable button is pressed, the indicator light will light up, indicating that the yaw control has been unlocked. The gear status of the yaw button S50.5 is indirectly fed back through the interface signal (the corresponding interface outputs a control signal when yawing left / right, and a ground signal when there is no yaw), so there is no need to add an additional status detection element.

[0052] In actual operation, the yaw control signal branch also includes a yaw status indication branch, which includes a left yaw indicator, a right yaw indicator, and a no-yaw status indicator. The left yaw indicator is connected in series between the left yaw output pin of the yaw button S50.5 and ground, the right yaw indicator is connected in series between the right yaw output pin of the yaw button S50.5 and ground, and the no-yaw status indicator is connected in series between the no-yaw position pin of the yaw button S50.5 and ground, to synchronously indicate the current position status of the yaw button S50.5.

[0053] The left yaw button S50.5 and the right yaw button S50.5 are equipped with a mechanical interlock structure, which allows only one direction of gear to be activated; and the left yaw button S50.5 and the right yaw button S50.5 are momentary buttons, which output a valid pulse signal during continuous pressing.

[0054] The mechanical interlock structure is integrated inside the yaw button S50.5, requiring no additional circuit connection. It achieves physical mutual exclusion of the left and right yaw positions through mechanical components such as gears and latches. That is, when the left yaw position is pressed, the mechanical structure locks the pressing stroke of the right yaw position, preventing it from conducting; similarly, when the right yaw position is pressed, the left yaw position is locked. This design does not limit operational flexibility, but rather mechanically eliminates the possibility of simultaneous output of left and right yaw signals, avoiding equipment malfunctions such as winding burnout and mechanical jamming caused by forward and reverse rotation conflicts of the yaw motor.

[0055] The left / right yaw positions are designed for momentary operation; their internal contacts close only when pressed continuously and immediately reset upon release. Combined with the overall connection of the yaw control signal branch, when the left yaw position is pressed continuously (and the yaw enable button S50.4 is pressed), the left yaw output pin is connected to the common terminal of the yaw button S50.5, and the control pulse signal is transmitted to the left yaw motor drive circuit via the seventh interface, starting the motor. Upon release, the contacts open, the signal is interrupted, the motor stops, and the position automatically resets to the fixed no-yaw position. This design avoids positional deviations caused by continuous yaw in a single operation.

[0056] The no-yaw status indicator is connected in series between the no-yaw position pin and ground. Since the no-yaw position pin is connected to the external ground terminal through the ninth interface, regardless of whether the enable condition is met, as long as the yaw button S50.5 is in the no-yaw fixed position (initial state or after release and reset), this pin will always remain grounded, the no-yaw status indicator will continue to light up, and the feedback yaw system will be in a stopped state.

[0057] According to the above embodiments, in a specific implementation scheme, the shell is made of engineering plastic or aluminum alloy, and the outer surface is integrally formed with anti-slip texture. The side wall of the shell is provided with hanging lugs for hanging and storage. The outer side of the shell is provided with a raised operation panel, and the operation button group is embedded in the groove of the operation panel, and each button is arranged in layers according to function.

[0058] The housing is made of either engineering plastic or aluminum alloy. The former is lightweight and corrosion-resistant, while the latter is high-strength and has good heat dissipation, both suitable for complex on-site lifting conditions. Anti-slip textures are integrally molded onto the outer surface, and lifting lugs are located on the side walls of the housing. The raised control panel and recessed area are integrated into a single design, with buttons embedded in the recess to prevent dust and water seepage, as well as accidental touches and button detachment. The materials and button layout can be adjusted as needed without altering the overall structure, adapting to different wind turbine lifting requirements.

[0059] According to the above embodiments, in a specific implementation scheme, the heavy-duty connector is a waterproof and mis-insertion-proof aviation plug with no less than 9 cores, and a rubber sealing ring is provided at the connection between the outer shell and the housing; the mating end of the heavy-duty connector is provided with a positioning pin, and the adapter socket is provided with a corresponding positioning hole, and the positioning pin and the positioning hole are matched accordingly.

[0060] The heavy-duty connector uses a waterproof, mis-mating-proof aviation plug with no fewer than 9 pins. The pin count is designed to meet the signal transmission needs of each branch of the manual control box (covering 9 key signals including power supply, lubrication, hydraulics, and yaw), rather than simply pursuing redundancy in the number of pins. A rubber sealing ring is placed at the connection between the outer shell and the housing, and the positioning pin and the positioning hole of the adapter socket form a mis-mating-proof structure. The core is to ensure connection reliability and signal transmission security through structural design.

[0061] Rubber sealing rings ensure a tight seal between the outer shell and the housing, preventing dust and moisture from seeping into the connector during installation and preventing pin short circuits or oxidation. This makes it suitable for complex outdoor and cabin environments. The matching positioning pins and positioning holes physically restrict reverse or misaligned insertion of the connector, preventing signal transmission abnormalities and equipment damage due to incorrect interface insertion, and reducing the risk of operational errors.

[0062] According to the above embodiments, in a specific implementation scheme, the control circuit board 11 is further provided with a power supply filter capacitor, which is connected in parallel between the input terminal of the power supply safety branch and ground, and is used to filter out noise signals in the DC power supply.

[0063] The power supply filter capacitor is a dedicated filter component connected in parallel between the input terminal of the power supply safety branch and ground. It is not an ordinary capacitor. Its core function is to filter out high-frequency noise signals in the DC power supply, ensure power supply stability, and provide clean power to each functional branch. It reduces the impact of noise on precision components such as chips and relay K50.1 on the control circuit board 11, extends the service life of components, and reduces the failure rate of the device.

[0064] The portable hand-operated box for detecting the power supply circuit of a wind turbine hoisting, provided by this utility model, has been described in detail above. The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

[0065] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A portable hand-operated box for testing the power supply circuit during wind turbine hoisting, characterized in that, include: The housing includes an operating button assembly, a control circuit board (11), and a heavy-duty connector. The housing has an internal mounting cavity for fixing the control circuit board (11). The operating button assembly and the heavy-duty connector are located on the outside of the housing, and the heavy-duty connector is detachably connected to a matching adapter socket on the wind turbine nacelle cabinet. The control circuit board (11) includes: a power supply safety branch for providing working voltage, a lubrication system signal branch for transmitting gearbox lubrication system control signals, a hydraulic system signal branch for transmitting hydraulic system power supply control signals, and a yaw control signal branch for transmitting yaw action control signals; the output end of each branch is connected to the heavy-duty connector. The operation button group includes: an emergency stop button for triggering an emergency stop and a cabin enable button for enabling the main power supply circuit. The emergency stop button and the cabin enable button are connected in series to the power supply safety branch. A gearbox lubrication control button for controlling the start and stop of the gearbox lubrication system is connected to the signal branch of the lubrication system. A hydraulic system power supply button for controlling the on / off of power supply to the hydraulic system is connected to the signal branch of the hydraulic system. A yaw enable button for providing an enable signal for yaw action and a yaw button for controlling the yaw direction are connected in series with the yaw control signal branch.

2. The portable hand-operated box for detecting the power supply circuit during wind turbine hoisting according to claim 1, characterized in that, The power supply safety branch includes: a relay and a diode; The first interface of the heavy-duty connector is used to connect to the DC power supply terminal of the external cabin cabinet. The first interface of the heavy-duty connector is connected in series with the pins of the emergency stop button and the cabin enable button, and then connected to the first end of the coil of the relay. The second end of the coil is connected to the third interface of the heavy-duty connector. The first normally open contact of the relay is connected to the fifth interface of the heavy-duty connector. The second normally open contact of the relay is connected to the sixth interface of the heavy-duty connector. The third, fifth, and sixth interfaces are used to connect to the power supply terminal of the safety chain relay of the external cabin cabinet. The diode is connected in parallel across the two ends of the coil of the relay, and the anode of the diode is connected to the second end of the coil, and the cathode is connected to the first end of the coil. The emergency stop button is a self-locking button, and the cabin enable button is a self-resetting button with an indicator light. After the emergency stop button is pressed, it remains in the disengaged self-locking state until it is manually rotated to reset.

3. The portable hand-operated box for detecting the power supply circuit during wind turbine hoisting according to claim 1, characterized in that, The input terminal of the lubrication system signal branch is connected to the first terminal of the power supply safety branch; The gearbox lubrication control button is a self-locking button with an indicator light. Its first pin is connected to the input terminal of the lubrication system signal branch, and its second pin is connected to the second interface of the heavy-duty connector. The second interface is used to connect the power supply terminal of the gearbox lubrication pump drive circuit of the external engine compartment cabinet.

4. The portable hand-operated box for detecting the power supply circuit during wind turbine hoisting according to claim 1, characterized in that, The input end of the hydraulic system signal branch is connected to the second end of the power supply safety branch; The hydraulic system power supply button is a self-locking button with an indicator light. Its first pin is connected to the input terminal of the hydraulic system signal branch, and its second pin is connected to the fourth interface of the heavy-duty connector. The fourth interface is used to connect the power supply terminal of the hydraulic system power supply circuit of the external engine room cabinet.

5. The portable hand-operated box for detecting the power supply circuit during wind turbine hoisting according to claim 1, characterized in that, The input terminal of the yaw control signal branch is connected to the third terminal of the power supply safety branch; The yaw enable button is a self-reset button with an indicator light. Its first pin is connected to the input terminal of the yaw control signal branch, and its second pin is connected to the common terminal of the yaw button. The yaw button is a three-position self-reset button, including a left yaw button, a right yaw button, and a fixed no-yaw position, with the fixed no-yaw position being the initial position of the switch; the output pin of the left yaw button is connected to the seventh interface of the heavy-duty connector, the output pin of the right yaw button is connected to the eighth interface of the heavy-duty connector, and the corresponding pin of the fixed no-yaw position is connected to the ninth interface of the heavy-duty connector; the seventh, eighth, and ninth interfaces are respectively used to connect the left yaw motor drive circuit, the right yaw motor drive circuit, and the grounding terminal of the external naval cabinet.

6. The portable hand-operated box for detecting the power supply circuit during wind turbine hoisting according to claim 5, characterized in that, The left and right yaw buttons of the yaw button are equipped with a mechanical interlock structure, which allows only one direction of the gear to be activated; and the left and right yaw buttons are momentary buttons, which output a valid pulse signal during continuous pressing.

7. The portable hand-operated box for detecting the power supply circuit during wind turbine hoisting according to claim 6, characterized in that, The yaw control signal branch also includes a yaw status indication branch, which includes a left yaw indicator, a right yaw indicator, and a no-yaw status indicator. The left yaw indicator is connected in series between the left yaw output pin of the yaw button and ground, the right yaw indicator is connected in series between the right yaw output pin of the yaw button and ground, and the no-yaw status indicator is connected in series between the no-yaw position pin of the yaw button and ground, to synchronously indicate the current position status of the yaw button.

8. The portable hand-operated box for detecting the power supply circuit during wind turbine hoisting according to claim 1, characterized in that, The housing is made of engineering plastic or aluminum alloy, with an integrally formed anti-slip texture on the outer surface. The side wall of the housing is provided with hanging lugs for hanging and storage. The outer side of the housing is provided with a raised operation panel, and the operation button group is embedded in the groove of the operation panel, and the buttons are arranged in layers according to their functions.

9. The portable hand-operated box for detecting the power supply circuit during wind turbine hoisting according to claim 1, characterized in that, The heavy-duty connector is a waterproof and mis-insertion-proof aviation plug with no less than 9 cores. A rubber sealing ring is provided at the connection between the outer shell and the housing. The mating end of the heavy-duty connector is provided with a positioning pin, and the adapter socket is provided with a corresponding positioning hole. The positioning pin and the positioning hole are matched accordingly.

10. The portable hand-operated box for testing the power supply circuit during wind turbine hoisting according to any one of claims 1-9, characterized in that, The control circuit board (11) is also provided with a power supply filter capacitor, which is connected in parallel between the input terminal of the power supply safety branch and ground, and is used to filter out noise signals in the DC power supply.

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