Power transmission device and method

Abstract

The invention relates to the technical field of power transmission and discloses a power transmission device and method.The power transmission device comprises a hydraulic coupling assembly, a pressure relief assembly and an interruption assembly, the hydraulic coupling assembly comprises a box body, an input turbine, an output turbine, an input shaft and an output shaft, coupling liquid is contained in the box body, and the input turbine and the output turbine are oppositely arranged in the box body; the input turbine is coaxially connected with the input shaft, the input shaft is connected with the power source, the output turbine is coaxially connected with the output shaft, and the coupling liquid is used for buffering vibration in the power transmission process; the pressure relief assembly comprises a pressure relief pipe, a first control valve and an oil storage tank, the oil storage tank is connected with the box body through the pressure relief pipe, the first control valve is arranged on the pressure relief pipe, and the pressure relief pipe and the first control valve are used for discharging high-pressure coupling liquid caused by load impact in the box body; the interruption assembly is arranged between the input shaft and the power source, vibration and transient impact in power transmission can be effectively buffered, power transmission of the input shaft and the power source can be cut off in time, and power can be unloaded in time.

Description

Technical Field

[0001] This invention belongs to the field of power transmission technology, and specifically relates to a power transmission device and method. Background Technology

[0002] With the development of intelligent coal mining, scraper conveyors, as key equipment for continuous transportation in underground working faces, are widely used in coal mining, transfer and other processes. The safety and stability of their transmission system directly affect production efficiency and underground safety.

[0003] However, the existing scraper conveyors have insufficient protection capabilities under large impact load conditions: they are prone to vibration and transient impacts during startup, load fluctuations, and coal and rock mixing, and their buffering and vibration damping capabilities are limited. Impact energy is easily accumulated, leading to fatigue damage to components. When strong impacts are caused by gangue accumulation or foreign objects getting stuck, the pressure peak rises suddenly and there is a lack of a rapid unloading mechanism, which can easily cause overload expansion, seal failure, and shutdown accidents. When blockage occurs, the abnormal identification and unloading response are not timely, and the power is difficult to cut off quickly, which can easily cause the motor to stall, the transmission chain to be impacted, or even the chain to break. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide a power transmission device and method, which can buffer load impacts and unload power in a timely manner to protect the entire power transmission system.

[0005] The power transmission device of this invention includes a hydraulic coupling assembly, a pressure relief assembly, and an interruption assembly. The hydraulic coupling assembly includes a housing, an input turbine, an output turbine, an input shaft, and an output shaft. The housing contains coupling fluid. The input turbine and the output turbine are disposed opposite each other within the housing. The input turbine is coaxially connected to the input shaft, which is connected to a power source. The output turbine is coaxially connected to the output shaft. The coupling fluid is used to buffer vibrations during power transmission. The pressure relief assembly includes a pressure relief pipe, a first control valve, and an oil reservoir. The oil reservoir is connected to the housing via the pressure relief pipe. The first control valve is disposed on the pressure relief pipe, and the pressure relief pipe and the first control valve are used to discharge high-pressure coupling fluid from the housing caused by load impacts. The interruption assembly is disposed between the input shaft and the power source. The interruption assembly is used to control the on / off state of power transmission between the input shaft and the power source, and to unload power transmission in a timely manner.

[0006] The power transmission device of this invention, through the arrangement of a hydraulic coupling component, a pressure relief component, and an interruption component, allows the coupling fluid to effectively buffer vibrations and transient impacts during power transmission, reducing fatigue damage to components caused by the accumulation of impact energy. The pressure relief pipe, the first control valve, and the oil tank can quickly discharge the high-pressure coupling fluid caused by load impacts, avoiding overload expansion, seal failure, and shutdown accidents caused by sudden pressure surges. The interruption component can promptly cut off the power transmission between the input shaft and the power source, unload the power in time, prevent motor stalling, transmission chain impact, and chain breakage under jamming conditions, and improve the safety and stability of the scraper conveyor transmission system.

[0007] In some embodiments, the input shaft and the output shaft are coaxially arranged, and the input shaft and the output shaft extend out of the housing respectively, and the output shaft is used to drive the scraper conveyor.

[0008] In some embodiments, the interruption assembly includes a clutch and an actuator. The clutch includes a flywheel, a driven disc, a diaphragm spring, and a pressure ring. The flywheel is connected to a power source. The driven disc is sleeved on the input shaft. The outer circumferential edge of the diaphragm spring is connected to the driven disc. The diaphragm spring is used to apply a force to the driven disc in a direction close to the flywheel. The pressure ring is sleeved on the input shaft and contacts the diaphragm spring. The actuator is connected to the pressure ring and is used to control the direction of the force applied by the diaphragm spring, thereby controlling the on / off state of power transmission between the input shaft and the power source.

[0009] In some embodiments, the actuator includes a hydraulic push rod, an oil guide pipe, and a second control valve. The output end of the hydraulic push rod is connected to the pressure ring, the cylinder of the hydraulic push rod is connected to the oil guide pipe, the oil guide pipe is connected to the housing, and the second control valve is disposed on the oil guide pipe. The second control valve is used to control the opening and closing of the oil guide pipe so that the output end of the hydraulic push rod drives the pressure ring to press the diaphragm spring, thereby interrupting the power transmission between the input shaft and the power source.

[0010] In some embodiments, the actuator further includes a rotating shaft, a rotating disk, a connecting rod, and a hinge rod. The central axis of the rotating shaft is perpendicular to the central axis of the input shaft. The rotating disk is sleeved on the rotating shaft. One side of the rotating disk is connected to the connecting rod, and the connecting rod is hinged to the pressure ring. The other side of the rotating disk is hinged to the hinge rod, and the hinge rod is hinged to the output end of the hydraulic push rod. The output end of the hydraulic push rod drives the rotating disk to rotate, so that the connecting rod drives the pressure ring to press the diaphragm spring.

[0011] In some embodiments, the actuator further includes an electric actuator and a locking groove, the locking groove being formed on the circumferential surface of the rotating shaft, the rotating disk being fixedly sleeved on the rotating shaft, and the output end of the electric actuator being used to insert into the locking groove to restrict the rotation of the rotating shaft.

[0012] In some embodiments, the interruption component further includes an energy storage device, which includes an oil reservoir, a connecting pipe, and a third control valve. The oil reservoir stores high-pressure coupling fluid. One end of the connecting pipe is connected to the oil reservoir, and the other end of the connecting pipe is connected to the housing. The third control valve is disposed on the connecting pipe and is used to control the opening and closing of the connecting pipe so that when a power interruption is required, the coupling fluid in the oil reservoir is replenished into the housing, thereby driving the hydraulic push rod to respond quickly.

[0013] In some embodiments, the interruption assembly further includes a driven gear, a transmission gear, and a drive shaft. The driven gear is mounted on the flywheel, the transmission gear is mounted on the drive shaft, the transmission gear meshes with the driven gear, and the drive shaft is connected to a power source.

[0014] In some embodiments, the power transmission device further includes a pressure sensor and a control unit. The pressure sensor is disposed in the housing and is used to monitor the coupling fluid pressure information in the housing. The pressure sensor is connected to the control unit, which is used to receive the pressure information. The control unit is connected to the first control valve, the second control valve, and the third control valve.

[0015] The power transmission method of this invention, utilizing any of the power transmission devices described above, includes the following steps:

[0016] Power input: The interruption component controls the power transmission between the input shaft and the power source. When power transmission is required, the interruption component is turned on, so that the power from the power source is transmitted to the input shaft. Hydraulic transmission: The input shaft drives the input turbine of the hydraulic coupling assembly to rotate. The coupling fluid contained in the housing of the hydraulic coupling assembly transmits the power of the input turbine to the output turbine that is positioned opposite it. At the same time, the coupling fluid buffers the vibration during the power transmission process. Power output: The output turbine drives the output shaft to rotate, thereby realizing the output of power; High pressure relief: When high pressure coupling fluid is generated in the tank due to load impact, the first control valve on the pressure relief pipe opens the connection path between the pressure relief pipe and the oil storage tank, and discharges part of the high pressure coupling fluid in the tank to the oil storage tank, thus completing the pressure relief and unloading. Power unloading: When it is necessary to stop power transmission or perform emergency unloading, the power transmission between the input shaft and the power source is disconnected by the interruption component to achieve immediate unloading of power transmission.

[0017] The power transmission method of this invention, through the setting of interruption components, hydraulic coupling components, and pressure relief components, realizes integrated control of power transmission, buffering and vibration suppression, high-pressure pressure relief, and power unloading. It effectively copes with complex working conditions such as scraper conveyor start-up, load fluctuations, and jamming, and alleviates vibration impact and overload risks. The coordinated operation of each step improves the stability of power transmission and the timeliness of emergency protection, ensuring the safe and efficient continuous transportation of scraper conveyors and adapting to the working conditions of intelligent coal mining. Attached Figure Description

[0018] Figure 1 This is an overall schematic diagram of the present invention. Figure 1 .

[0019] Figure 2 This is an overall schematic diagram of the present invention. Figure 2 .

[0020] Figure 3 This is a schematic diagram of the internal structure of the present invention.

[0021] Figure 4 This is a schematic diagram of the hydraulic coupling component in this invention.

[0022] Figure 5 This is a schematic diagram of the interrupt component in this invention. Figure 1 .

[0023] Figure 6 This is a schematic diagram of the interrupt component in this invention. Figure 2 .

[0024] Figure 7 This is a schematic diagram of the interrupt component in this invention. Figure 3 .

[0025] Figure 8 This is a schematic diagram of the structure of the actuator in this invention. Figure 1 .

[0026] Figure 9 This is a schematic diagram of the structure of the actuator in this invention. Figure 2 .

[0027] Figure label: 1. Hydraulic coupling assembly; 11. Housing; 12. Input turbine; 13. Output turbine; 14. Input shaft; 15. Output shaft; 2. Pressure relief assembly; 21. Pressure relief pipe; 22. First control valve; 23. Oil reservoir; 3. Interruption component; 31. Clutch; 311. Flywheel; 312. Driven plate; 313. Diaphragm spring; 314. Pressure ring; 32. Actuator; 321. Hydraulic push rod; 322. Oil guide pipe; 323. Second control valve; 324. Rotating shaft; 325. Rotating plate; 326. Connecting rod; 327. Hinge rod; 328. Electric push rod; 329. Locking groove; 33. Energy accumulator; 331. Oil reservoir; 332. Connecting pipe; 333. Third control valve; 34. Driven gear; 35. Transmission gear; 36. Drive shaft. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] like Figures 1-9 As shown, the power transmission device of this embodiment includes a hydraulic coupling component 1, a pressure relief component 2, and an interruption component 3. The hydraulic coupling assembly 1 includes a housing 11, an input turbine 12, an output turbine 13, an input shaft 14, and an output shaft 15. The housing 11 contains coupling fluid. The input turbine 12 and the output turbine 13 are arranged opposite to each other in the housing 11. The input turbine 12 is coaxially connected to the input shaft 14, which is connected to a power source. The output turbine 13 is coaxially connected to the output shaft 15. The coupling fluid is used to buffer vibrations during power transmission. The pressure relief assembly 2 includes a pressure relief pipe 21, a first control valve 22, and an oil reservoir 23. The oil reservoir 23 is connected to the housing 11 through the pressure relief pipe 21. The first control valve 22 is installed on the pressure relief pipe 21. The pressure relief pipe 21 and the first control valve 22 are used to discharge the high-pressure coupling fluid in the housing 11 caused by load impact. The interruption assembly 3 is installed between the input shaft 14 and the power source. The interruption assembly 3 is used to control the on / off of power transmission between the input shaft 14 and the power source to unload power transmission in a timely manner.

[0030] The power transmission device of this invention, through the arrangement of a hydraulic coupling component, a pressure relief component, and an interruption component, allows the coupling fluid to effectively buffer vibrations and transient impacts during power transmission, reducing fatigue damage to components caused by the accumulation of impact energy. The pressure relief pipe, the first control valve, and the oil tank can quickly discharge the high-pressure coupling fluid caused by load impacts, avoiding overload expansion, seal failure, and shutdown accidents caused by sudden pressure surges. The interruption component can promptly cut off the power transmission between the input shaft and the power source, unload the power in time, prevent motor stalling, transmission chain impact, and chain breakage under jamming conditions, and improve the safety and stability of the scraper conveyor transmission system.

[0031] Specifically, the power source drives the input shaft 14 to rotate, which in turn drives the input turbine 12 to rotate. The input turbine 12 agitates the coupling fluid in the housing 11, and the coupling fluid transmits power to the output turbine 13. The output turbine 13 drives the output shaft 15 to rotate, thus realizing power transmission. The coupling fluid buffers the vibration during the power transmission process. When high-pressure coupling fluid is generated in the housing 11 due to load impact, the first control valve 22 opens the pressure relief pipe 21, and the high-pressure coupling fluid is discharged into the oil tank 23 through the pressure relief pipe 21 to complete the pressure relief. The interruption component 3 controls the power transmission between the input shaft 14 and the power source, and disconnects the power transmission when unloading is required.

[0032] In some embodiments, the input shaft 14 and the output shaft 15 are coaxially arranged, and the input shaft 14 and the output shaft 15 extend out of the housing 11 respectively. The output shaft 15 is used to drive the scraper conveyor.

[0033] The power transmission device of this invention simplifies the power transmission path, reduces transmission loss, and improves power transmission efficiency by setting the input shaft and output shaft coaxially, while ensuring the operational stability of the scraper conveyor when the output shaft drives it.

[0034] Specifically, the input shaft 14 and the output shaft 15 are coaxially arranged and extend out of the housing 11 respectively. The output shaft 15 directly drives the scraper conveyor to realize the directional transmission of power to the scraper conveyor.

[0035] Furthermore, bearings are respectively fitted on the input shaft 14 and the output shaft 15, and the bearings are connected to the housing 11.

[0036] Furthermore, a sealing ring is provided at the connection between the input shaft 14 and the output shaft 15 and the housing 11. The sealing ring is used to prevent the coupling fluid in the housing 11 from flowing out.

[0037] In some embodiments, the interruption component 3 includes a clutch 31 and an actuator 32. The clutch 31 includes a flywheel 311, a driven plate 312, a diaphragm spring 313, and a pressure ring 314. The flywheel 311 is connected to a power source. The driven plate 312 is sleeved on the input shaft 14. The outer circumferential edge of the diaphragm spring 313 is connected to the driven plate 312. The diaphragm spring 313 is used to apply a force to the driven plate 312 in a direction close to the flywheel 311. The pressure ring 314 is sleeved on the input shaft 14 and contacts the diaphragm spring 313. The actuator 32 is connected to the pressure ring 314 and is used to control the direction of the force applied by the diaphragm spring 313, thereby controlling the on / off state of power transmission between the input shaft 14 and the power source.

[0038] The power transmission device of this invention, through the arrangement of a clutch, actuator, flywheel, driven disc, diaphragm spring, and pressure ring, enables rapid switching of power transmission between the input shaft and the power source. In case of jamming or overload, the power can be cut off immediately to avoid motor stalling, transmission chain impact, and chain breakage, thereby improving the emergency protection capability of the transmission system. The elastic force of the diaphragm spring ensures the stability of power transmission, reduces vibration caused by transmission gaps, and is suitable for complex load conditions of scraper conveyors.

[0039] Specifically, the flywheel 311 rotates with the power source, and the diaphragm spring 313 applies a force close to the flywheel 311 to the driven disc 312, so that the driven disc 312 and the flywheel 311 are in contact to transmit power to the input shaft 14; when the scraper conveyor is blocked, the actuator is activated, and the actuator 32 drives the pressure ring 314 to move. The pressure ring 314 squeezes the diaphragm spring 313 to change the direction of the applied force, so that the driven disc 312 is separated from the flywheel 311, interrupting the power transmission between the input shaft 14 and the power source.

[0040] Furthermore, clutch 31 is existing technology and will not be described in detail.

[0041] In some embodiments, the actuator 32 includes a hydraulic push rod 321, an oil guide pipe 322, and a second control valve 323. The output end of the hydraulic push rod 321 is connected to the pressure ring 314. The cylinder of the hydraulic push rod 321 is connected to the oil guide pipe 322, and the oil guide pipe 322 is connected to the housing 11. The second control valve 323 is disposed on the oil guide pipe 322 and is used to control the opening and closing of the oil guide pipe 322 so that the output end of the hydraulic push rod 321 drives the pressure ring 314 to press the diaphragm spring 313, thereby interrupting the power transmission between the input shaft 14 and the power source.

[0042] The power transmission device of this invention uses the coupling fluid inside the housing as the driving medium through the setting of hydraulic push rod, oil guide pipe and second control valve. It does not require an additional independent power source, which simplifies the overall structural design and reduces the complexity of the layout of downhole equipment. The hydraulic drive mode has a rapid response and stable thrust, and can realize the rapid interruption of power transmission.

[0043] Specifically, when the scraper conveyor gets stuck, the second control valve 323 opens, and the second control valve 323 connects the oil guide pipe 322. Under its own pressure, the coupling fluid in the housing 11 enters the cylinder of the hydraulic push rod 321 through the oil guide pipe 322, driving the output end of the hydraulic push rod 321 to move. The hydraulic push rod 321 pushes the pressure ring 314 to press the diaphragm spring 313, causing the diaphragm spring 313 to change the direction of force, separating the driven plate 312 from the flywheel 311, and interrupting the power transmission between the input shaft 14 and the power source.

[0044] In some embodiments, the actuator 32 further includes a rotating shaft 324, a rotating disk 325, a connecting rod 326, and a hinge rod 327. The central axis of the rotating shaft 324 is perpendicular to the central axis of the input shaft 14. The rotating disk 325 is sleeved on the rotating shaft 324. One side of the rotating disk 325 is connected to the connecting rod 326, and the connecting rod 326 is hinged to the pressure ring 314. The other side of the rotating disk 325 is hinged to the hinge rod 327, and the hinge rod 327 is hinged to the output end of the hydraulic push rod 321. The output end of the hydraulic push rod 321 drives the rotating disk 325 to rotate, so that the connecting rod 326 drives the pressure ring 314 to press the diaphragm spring 313.

[0045] Specifically, when a blockage occurs, the output end of the hydraulic push rod 321 extends, and the output end of the hydraulic push rod 321 drives the hinge rod 327 to move. The hinge rod 327 drives the rotating disk 325 to rotate around the rotating shaft 324. The rotating disk 325 pushes the pressure ring 314 through the connecting rod 326. The pressure ring 314 presses the diaphragm spring 313, causing the driven disk 312 to separate from the flywheel 311, interrupting the power transmission between the input shaft 14 and the power source.

[0046] In some embodiments, the actuator 32 further includes an electric push rod 328 and a locking groove 329. The locking groove 329 is formed on the circumferential surface of the rotating shaft 324. The rotating disk 325 is fixedly sleeved on the rotating shaft 324. The output end of the electric push rod 328 is used to insert into the locking groove 329 to restrict the rotation of the rotating shaft 324.

[0047] The power transmission device of this invention, through the setting of electric push rod and locking groove, realizes mechanical locking of the rotation state of the rotating shaft, ensures the stable maintenance of the power transmission on and off state, avoids clutch malfunction caused by vibration or external force interference, and improves the reliability of transmission system control; the locking structure responds quickly and positions accurately, and can maintain the power interruption state after emergency unloading, prevent secondary impact caused by accidental restart, and ensure the safe operation of scraper conveyor under complex underground working conditions.

[0048] Specifically, after the driven disc 312 separates from the flywheel 311, the output end of the electric actuator 328 is inserted into the locking groove 329 to restrict the rotation of the rotating shaft 324, thereby fixing the rotating disc 325 sleeved on the rotating shaft 324, keeping the connecting rod 326 and the pressure ring 314 in their current positions, maintaining the force applied by the diaphragm spring 313, and locking the on / off state of power transmission between the input shaft 14 and the power source.

[0049] In some embodiments, the interruption component 3 further includes an energy storage component 33, which includes an oil reservoir 331, a connecting pipe 332, and a third control valve 333. The oil reservoir 331 stores high-pressure coupling fluid. One end of the connecting pipe 332 is connected to the oil reservoir 331, and the other end of the connecting pipe 332 is connected to the housing 11. The third control valve 333 is disposed on the connecting pipe 332 and is used to control the opening and closing of the connecting pipe 332 so that when power interruption is required, the coupling fluid in the oil reservoir 331 is replenished into the housing 11, thereby driving the hydraulic push rod 321 to respond quickly.

[0050] The power transmission device of this invention, through the setting of an oil reservoir, connecting pipe and third control valve, pre-stores high-pressure coupling fluid, which is quickly replenished to the housing when power interruption is required, providing an instantaneous high-pressure drive source for the hydraulic push rod, improving the response speed of power interruption, and ensuring the timeliness of power unloading under jamming or overload conditions; the rapid replenishment of high-pressure coupling fluid can avoid the influence of housing pressure fluctuations on drive action, ensure the stability and reliability of hydraulic push rod action, and further enhance the emergency protection capability of scraper conveyor transmission system.

[0051] Specifically, when a blockage occurs, the third control valve 333 connects to the connecting pipe 332, and the high-pressure coupling fluid in the oil reservoir 331 is replenished into the housing 11 through the connecting pipe 332. The high-pressure coupling fluid in the housing 11 quickly enters the cylinder of the hydraulic push rod 321 through the oil guide pipe 322, driving the hydraulic push rod 321 to move quickly, thereby pushing the pressure ring 314 to press the diaphragm spring 313, realizing the rapid interruption of power transmission between the input shaft 14 and the power source.

[0052] In some embodiments, the interruption component 3 further includes a driven gear 34, a transmission gear 35, and a drive shaft 36. The driven gear 34 is fixedly sleeved on the flywheel 311, the transmission gear 35 is fixedly sleeved on the drive shaft 36, the transmission gear 35 meshes with the driven gear 34, and the drive shaft 36 is connected to a power source.

[0053] The power transmission device of this invention, through the arrangement of driven gear, transmission gear and drive shaft, adopts gear meshing transmission method to realize stable power transmission between power source and clutch. The gear transmission ratio is accurate and efficient, and can be adapted to the working conditions of scraper conveyor with high torque and heavy load.

[0054] Specifically, the power source drives the drive shaft 36 to rotate, the drive shaft 36 drives the transmission gear 35 to rotate, the transmission gear 35 meshes with the driven gear 34, and transmits power to the driven gear 34. The driven gear 34 drives the flywheel 311 to rotate, thus realizing the power transmission between the power source and the clutch.

[0055] In some embodiments, the power transmission device further includes a pressure sensor and a control unit. The pressure sensor is disposed in the housing 11 and is used to monitor the coupling fluid pressure information in the housing 11. The pressure sensor is connected to the control unit, which is used to receive pressure information. The control unit is connected to the first control valve 22, the second control valve 323, and the third control valve 333.

[0056] The power transmission device of this invention, through the setting of pressure sensors and control units, realizes real-time monitoring and automatic regulation of the internal pressure of the housing, which can help identify abnormal working conditions such as overload and jamming, trigger protective actions such as pressure relief and power interruption, and improve the intelligence level and emergency response efficiency of the transmission system.

[0057] Specifically, the pressure sensor monitors the coupling fluid pressure information in the housing 11 in real time and transmits it to the control unit. The control unit judges the working condition based on the pressure information. When the pressure is abnormal, the control unit controls the opening and closing of the first control valve 22, the second control valve 323 and the third control valve 333 respectively in combination with the operation information of the conveyor, so as to realize the automatic control of high pressure relief, power interruption or high pressure coupling fluid replenishment.

[0058] The power transmission method of this invention, utilizing any of the power transmission devices described above, includes the following steps: Power input: The interrupt component controls the power transmission between the input shaft and the power source. When power transmission is required, the interrupt component is turned on, so that the power source is transmitted to the input shaft. Hydraulic transmission: The input shaft drives the input turbine of the hydraulic coupling assembly to rotate. The coupling fluid contained in the housing of the hydraulic coupling assembly transmits the power of the input turbine to the output turbine that is positioned opposite it. At the same time, the coupling fluid buffers the vibration during the power transmission process. Power output: The output turbine drives the output shaft to rotate, thereby outputting power; High pressure relief: When high pressure coupling fluid is generated in the tank due to load impact, the first control valve on the pressure relief pipe opens the connection path between the pressure relief pipe and the oil storage tank, and discharges part of the high pressure coupling fluid in the tank to the oil storage tank, thus completing the pressure relief and unloading. Power unloading: When it is necessary to stop power transmission or perform emergency unloading, the power transmission between the input shaft and the power source is disconnected by the interrupt component, thereby achieving immediate unloading of power transmission.

[0059] The power transmission method of this invention, through the setting of interruption components, hydraulic coupling components, and pressure relief components, realizes integrated control of power transmission, buffering and vibration suppression, high-pressure pressure relief, and power unloading. It effectively copes with complex working conditions such as scraper conveyor start-up, load fluctuations, and jamming, and alleviates vibration impact and overload risks. The coordinated operation of each step improves the stability of power transmission and the timeliness of emergency protection, ensuring the safe and efficient continuous transportation of scraper conveyors and adapting to the working conditions of intelligent coal mining.

[0060] Specifically, when the interrupt component is turned on, the power source transmits power to the input shaft, which drives the input turbine to rotate. The input turbine drives the output turbine to rotate through the coupling fluid, and the output turbine drives the output shaft to achieve power output. When high-pressure coupling fluid is generated in the housing, the first control valve opens the pressure relief pipe, and the high-pressure coupling fluid is discharged into the oil tank to complete the pressure relief. When unloading is required, the interrupt component disconnects the power transmission between the input shaft and the power source to achieve power unloading.

[0061] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0062] 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 at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0065] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A power transmission device characterized by comprising: include: A hydraulic coupling assembly (1) includes a housing (11), an input turbine (12), an output turbine (13), an input shaft (14), and an output shaft (15). The housing (11) contains a coupling fluid. The input turbine (12) and the output turbine (13) are arranged opposite to each other in the housing (11). The input turbine (12) is coaxially connected to the input shaft (14), which is connected to a power source. The output turbine (13) is coaxially connected to the output shaft (15). The coupling fluid is used to buffer vibrations during power transmission. The pressure relief assembly (2) includes a pressure relief pipe (21), a first control valve (22), and an oil reservoir (23). The oil reservoir (23) is connected to the housing (11) through the pressure relief pipe (21). The first control valve (22) is installed on the pressure relief pipe (21). The pressure relief pipe (21) and the first control valve (22) are used to discharge the high-pressure coupling fluid in the housing (11) caused by load impact. Interruption component (3) is disposed between the input shaft (14) and the power source. The interruption component (3) is used to control the on / off of power transmission between the input shaft (14) and the power source, so as to unload the power transmission in a timely manner.

2. The power transmission device of claim 1, wherein The input shaft (14) and the output shaft (15) are coaxially arranged, and the input shaft (14) and the output shaft (15) extend out of the housing (11) respectively. The output shaft (15) is used to drive the scraper conveyor.

3. The power transmission device of claim 1, wherein The interruption assembly (3) includes a clutch (31) and an actuator (32). The clutch (31) includes a flywheel (311), a driven plate (312), a diaphragm spring (313), and a pressure ring (314). The flywheel (311) is connected to a power source. The driven plate (312) is sleeved on the input shaft (14). The outer circumferential edge of the diaphragm spring (313) is connected to the driven plate (312). The diaphragm spring (313) is used for... A force is applied to the driven disc (312) in the direction close to the flywheel (311). The pressure ring (314) is sleeved on the input shaft (14). The pressure ring (314) is in contact with the diaphragm spring (313). The actuator (32) is connected to the pressure ring (314). The actuator (32) is used to control the direction of the force applied by the diaphragm spring (313), thereby controlling the on / off of power transmission between the input shaft (14) and the power source.

4. The power transmission device of claim 3, wherein The actuator (32) includes a hydraulic push rod (321), an oil guide pipe (322), and a second control valve (323). The output end of the hydraulic push rod (321) is connected to the pressure ring (314). The cylinder of the hydraulic push rod (321) is connected to the oil guide pipe (322). The oil guide pipe (322) is connected to the housing (11). The second control valve (323) is installed on the oil guide pipe (322). The second control valve (323) is used to control the opening and closing of the oil guide pipe (322) so that the output end of the hydraulic push rod (321) drives the pressure ring (314) to press the diaphragm spring (313), thereby interrupting the power transmission between the input shaft (14) and the power source.

5. The power transmission device of claim 4, wherein The actuator (32) further includes a rotating shaft (324), a rotating disk (325), a connecting rod (326), and a hinge rod (327). The central axis of the rotating shaft (324) is perpendicular to the central axis of the input shaft (14). The rotating disk (325) is sleeved on the rotating shaft (324). One side of the rotating disk (325) is connected to the connecting rod (326). The connecting rod (326) is hinged to the pressure ring (314). The other side of the rotating disk (325) is hinged to the hinge rod (327). The hinge rod (327) is hinged to the output end of the hydraulic push rod (321). The output end of the hydraulic push rod (321) drives the rotating disk (325) to rotate, so that the connecting rod (326) drives the pressure ring (314) to press the diaphragm spring (313).

6. The power transmission device according to claim 5, characterized in that, The actuator (32) further includes an electric actuator (328) and a locking groove (329). The locking groove (329) is formed on the circumferential surface of the rotating shaft (324). The rotating disk (325) is fixedly sleeved on the rotating shaft (324). The output end of the electric actuator (328) is used to insert into the locking groove (329) to restrict the rotation of the rotating shaft (324).

7. The power transmission device according to claim 4, characterized in that, The interruption component (3) also includes an energy storage component (33), which includes an oil reservoir (331), a connecting pipe (332), and a third control valve (333). The oil reservoir (331) stores high-pressure coupling fluid. One end of the connecting pipe (332) is connected to the oil reservoir (331), and the other end of the connecting pipe (332) is connected to the housing (11). The third control valve (333) is installed on the connecting pipe (332) and is used to control the opening and closing of the connecting pipe (332) so that when power interruption is required, the coupling fluid in the oil reservoir (331) is replenished into the housing (11), thereby driving the hydraulic push rod (321) to respond quickly.

8. The power transmission device according to claim 3, characterized in that, The interruption component (3) further includes a driven gear (34), a transmission gear (35), and a drive shaft (36). The driven gear (34) is sleeved on the flywheel (311), the transmission gear (35) is sleeved on the drive shaft (36), the transmission gear (35) meshes with the driven gear (34), and the drive shaft (36) is connected to a power source.

9. The power transmission device according to claim 7, characterized in that, It also includes a pressure sensor and a control unit. The pressure sensor is disposed in the housing (11) and is used to monitor the coupling fluid pressure information in the housing (11). The pressure sensor is connected to the control unit, which is used to receive the pressure information. The control unit is connected to the first control valve (22), the second control valve (323), and the third control valve (333).

10. A power transmission method, comprising the power transmission device according to any one of claims 1-9, characterized in that, Includes the following steps: Power input: The interruption component controls the power transmission between the input shaft and the power source. When power transmission is required, the interruption component is turned on, so that the power from the power source is transmitted to the input shaft. Hydraulic transmission: The input shaft drives the input turbine of the hydraulic coupling assembly to rotate. The coupling fluid contained in the housing of the hydraulic coupling assembly transmits the power of the input turbine to the output turbine that is positioned opposite it. At the same time, the coupling fluid buffers the vibration during the power transmission process. Power output: The output turbine drives the output shaft to rotate, thereby realizing the output of power; High pressure relief: When high pressure coupling fluid is generated in the tank due to load impact, the first control valve on the pressure relief pipe opens the connection path between the pressure relief pipe and the oil storage tank, and discharges part of the high pressure coupling fluid in the tank to the oil storage tank, thus completing the pressure relief and unloading. Power unloading: When it is necessary to stop power transmission or perform emergency unloading, the power transmission between the input shaft and the power source is disconnected by the interruption component to achieve immediate unloading of power transmission.

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