Limited rectangular magnetic coupler for mine

Abstract

The utility model relates to a mining limited rectangular magnetic coupler which comprises a main shaft, a magnet rotor assembly, an eddy current rotor assembly, a first limiting assembly and a second limiting piece. The magnet rotor assembly is sleeved outside the main shaft and slides along the axial direction of the main shaft; the eddy current rotor assembly is sleeved outside the magnet rotor assembly, the eddy current rotor assembly comprises two magnetic conductive discs and a magnetic shell, and the edge of the magnetic shell extends towards the main shaft to form a boss; the first limiting assemblies are arranged at the two ends of the spindle and used for limiting the spindle to slide in the axial direction of the spindle. The at least two second limiting pieces are arranged on the main shaft, located between the magnet rotor assembly and the magnetic conductive disc and used for limiting the magnet rotor assembly to slide in the axial direction of the main shaft; according to the mining limited rectangular magnetic coupler, the two second limiting pieces are matched with the first limiting assembly, axial movement of the magnet rotor assembly along the main shaft is further limited, and the first preset gap and the second preset gap are formed between the two ends of the magnet rotor assembly and the two bosses respectively.

Description

Technical Field

[0001] This application belongs to the technical field of couplings, and particularly relates to a mine-used limited rectangular magnetic coupler. Background Art

[0002] The permanent magnet drive technology is a new type of drive technology that transmits mechanical power through magnetic field coupling. It is based on the principle of electromagnetic induction, and uses the magnetic field to pass through the working air gap of the magnetic circuit to move and transmit torque, thereby realizing a flexible drive mode between the motor and the load.

[0003] The existing mine-used magnetic coupler includes a vortex rotor assembly, a magnet rotor assembly, and a main shaft. The vortex rotor assembly includes an explosion-proof housing and a conductive disk. A boss structure is provided at the edge of the explosion-proof housing, and the boss structure is used to cooperate with the conductive disk to form an explosion-proof joint surface to prevent sparks from entering or escaping from the mine-used magnetic coupler.

[0004] However, the magnet rotor assembly has strong magnetism, and the explosion-proof housing usually selects metal materials such as aluminum or stainless steel with high strength and no magnetism. Since aluminum is a light metal and is prone to generating sparks, it is not suitable as the explosion-proof housing material for mine-used magnetic couplers. Using stainless steel as the explosion-proof housing material has a high cost, and large-sized stainless steel pipes are difficult to purchase, making it difficult to mass-produce as the explosion-proof housing material. If other magnetic metal materials are used to make the explosion-proof housing, the magnet rotor assembly is interfered by magnetism, resulting in its uncontrolled movement towards the direction close to the boss structure, inevitably causing friction between the magnet rotor assembly and the vortex rotor assembly, generating a large amount of heat and even generating sparks, which may further ignite the gas in the mine and cause an explosion. Summary of the Utility Model

[0005] In view of the deficiencies in the related art, this application provides a mine-used limited rectangular magnetic coupler. By a first limiting component, the axial movement of the main shaft is restricted, thereby avoiding the movement of the magnet rotor assembly sleeved on the main shaft towards the direction close to the conductive disk. At the same time, a second limiting member further restricts the axial movement of the magnet rotor assembly along the main shaft to cooperate with the first limiting component to keep the two ends of the magnet rotor assembly separated from the two bosses by a first preset gap and a second preset gap respectively, avoiding magnetic interference of the magnetic boss on the magnet rotor assembly.

[0006] This application provides a mine-used limited rectangular magnetic coupler, which includes:

[0007] A main shaft, one end of the main shaft is connected to a motor for inputting torque, or connected to a load device for outputting torque;

[0008] A magnet rotor assembly, the magnet rotor assembly is sleeved outside the main shaft and slides axially along the main shaft;

[0009] A vortex rotor assembly, the vortex rotor assembly is sleeved outside the magnet rotor assembly. The vortex rotor assembly includes two guide disks and a magnetic housing. The edge of the magnetic housing extends towards the main shaft to form a boss. The two guide disks are respectively covered on the two bosses at both ends of the magnetic housing to enclose an explosion-proof space. The magnet rotor assembly is located inside the explosion-proof space. The main shaft passes through the guide disk and extends out of the explosion-proof space. Any one of the guide disks is connected to a load device for outputting torque, or connected to a motor for inputting torque;

[0010] A first limiting assembly, the first limiting assembly is arranged at both ends of the main shaft, and the first limiting assembly is used to limit the axial sliding of the main shaft along its axis;

[0011] A second limiting member, at least two second limiting members are arranged on the main shaft. The second limiting members are located between the magnet rotor assembly and the guide disk. The two second limiting members are used to limit the axial sliding of the magnet rotor assembly along the main shaft; the two second limiting members cooperate with the first limiting assembly to make the two ends of the magnet rotor assembly be separated from the two bosses by a first preset gap and a second preset gap respectively.

[0012] In some embodiments, the first limiting assembly includes:

[0013] A first limiting member, the first limiting member is arranged at one end of the main shaft, and the guide disk is located between the first limiting member and the magnet rotor assembly;

[0014] A first bearing, the first bearing is sleeved outside the main shaft, and the first bearing is located between the first limiting member and the guide disk;

[0015] A second bearing, the second bearing is sleeved outside the main shaft, and the second bearing is located at the end of the main shaft relatively far from the first bearing.

[0016] In some embodiments, the first limiting assembly further includes:

[0017] An adjusting member, the adjusting member is arranged on one side of the second bearing, and the adjusting member is used for axial displacement along the main shaft and one end of the adjusting member abuts against the second bearing to increase or decrease the first preset gap and the second preset gap.

[0018] In some embodiments, when the magnet rotor assembly drives the main shaft to rotate and wants to displace beyond the first preset gap or the second preset gap, the first limiting member is used to limit the axial displacement of the main shaft along the main shaft, and at the same time the second limiting member is used to limit the axial displacement of the magnet rotor assembly along the main shaft.

[0019] In some embodiments, a positioning step is further provided at the edge of the guide disk, and the positioning step and the boss cooperate to form a first explosion-proof joint; a clearance fit is provided between the main shaft and the two guide disks, and a second explosion-proof joint is formed at the clearance fit, and the first explosion-proof joint and the second explosion-proof joint are used to prevent sparks from entering or escaping from the explosion-proof space.

[0020] In some embodiments, the mine-limited rectangular magnetic coupler further includes:

[0021] An input connector, which is provided at one end of the main shaft, or the input connector is provided at one end of the guide disk;

[0022] An output connector, which is provided at one end of the guide disk relative to the input connector, or the output connector is provided at one end of the main shaft relative to the input connector.

[0023] In some embodiments, the adjusting member is rotatably provided on the input connector or the output connector. When the adjusting member is rotated, the adjusting member is used to axially displace along the main shaft relative to the input connector or the output connector, so as to push the second bearing to adjust the first preset gap and the second preset gap.

[0024] In some embodiments, the mine-limited rectangular magnetic coupler further includes:

[0025] A protective cover, which is sleeved outside the eddy current rotor assembly, and one end of the protective cover is connected to a placement plane.

[0026] In some embodiments, the mine-limited rectangular magnetic coupler further includes:

[0027] A temperature sensor, which is provided on the protective cover, and the temperature sensor is electrically connected to a control center, and the temperature sensor is used to monitor the temperature of the eddy current rotor assembly in real time.

[0028] In some embodiments, the mine-limited rectangular magnetic coupler further includes:

[0029] A heat dissipation member, which is provided on the magnetic housing and the side of the two guide disks away from the explosion-proof space.

[0030] In summary, the present application provides a mine - use limited - rectangle magnetic coupler. The axial movement of the main shaft is restricted by the first limiting component, thereby preventing the magnet rotor assembly sleeved on the main shaft from moving towards the direction close to the guide disk. At the same time, the second limiting member further restricts the axial movement of the magnet rotor assembly along the main shaft to cooperate with the first limiting component so that both ends of the magnet rotor assembly are separated from the two bosses by a first preset gap and a second preset gap respectively; the pre - tightening force is changed by the adjusting member to push against the second bearing, and at the same time, the first preset gap and the second preset gap are adjusted; the first explosion - proof joint position and the second explosion - proof joint position are set to prevent sparks from entering or escaping from the explosion - proof space.

[0031] Other features and advantages of the present application will be described in the following description of the specification. And some will become obvious from the description in the specification, or be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures pointed out in the specification, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments and descriptions thereof of the present application are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0033] Figure 1 is the front view of the mine - use limited - rectangle magnetic coupler of the present application;

[0034] Figure 2 is the Figure 1 A - A cross - sectional view of the mine - use limited - rectangle magnetic coupler of the present application.

[0035] In the figure: 100, main shaft; 200, magnet rotor assembly; 201, magnet disk; 202, magnet; 203, magnet rotor guide disk; 204, guide ring; 300, vortex rotor assembly; 301, magnetic outer shell; 3011, boss; 302, guide disk; 3021, positioning step; 303, conductive disk; 401, first limiting member; 402, first bearing; 403, second bearing; 404, adjusting member; 500, second limiting member; 600, input connecting member; 700, output connecting member; 800, heat - dissipating member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0037] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0038] The terms "first", "second", "third" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", "third" may explicitly or implicitly include one or more of such features.

[0039] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. Specific embodiments

[0041] The present application provides a mine-used limited-rectangle magnetic coupler, which includes a main shaft 100, a magnet rotor assembly 200, a vortex rotor assembly 300, a first limiting assembly, and a second limiting member 500. One end of the main shaft 100 is connected to a motor for inputting torque, or connected to a load device for outputting torque. The magnet rotor assembly 200 is sleeved outside the main shaft 100 and slides axially along the main shaft 100. The vortex rotor assembly 300 is sleeved outside the magnet rotor assembly 200. The vortex rotor assembly 300 includes two conductive disks 302 and a magnetic housing 301. The edge of the magnetic housing 301 extends towards the main shaft 100 to form a boss 3011. The two conductive disks 302 are respectively covered on the two bosses 3011 at both ends of the magnetic housing 301 to enclose an explosion-proof space. The magnet rotor assembly 200 is located inside the explosion-proof space. The main shaft 100 passes through the conductive disk 302 and extends out of the explosion-proof space. Any one of the conductive disks 302 is connected to a load device for outputting torque, or connected to a motor for inputting torque. The first limiting assembly is arranged at both ends of the main shaft 100, and the first limiting assembly is used to limit the axial sliding of the main shaft 100. At least two second limiting members 500 are arranged on the main shaft 100. The second limiting members 500 are located between the magnet rotor assembly and the conductive disk 302. The two second limiting members 500 are used to limit the axial sliding of the magnet rotor assembly along the main shaft 100. The two second limiting members 500 cooperate with the first limiting assembly to make the two ends of the magnet rotor assembly 200 be separated from the two bosses 3011 by a first preset gap and a second preset gap.

[0042] Refer to the appendix Figure 1 With the appendix Figure 2 , in some embodiments, the main shaft 100 is a columnar component. One end of the main shaft 100 is connected to a motor for inputting torque, or connected to a load device for outputting torque. A connection structure is provided on the outer peripheral wall of the main shaft 100, and the connection structure is used to connect the main shaft 100 with the magnet rotor assembly 200.

[0043] Specifically, the connection structure includes, but is not limited to, a two-edge structure, a three-edge structure, a four-edge structure, and a six-edge structure. When the main shaft 100 rotates around its axis, the magnet rotor assembly 200 is driven to rotate around the axis of the main shaft 100 through the connection structure, and the connection structure does not affect the axial sliding of the magnet rotor assembly 200 along the main shaft 100.

[0044] Refer to the appendix Figure 2, in some embodiments, the magnet rotor assembly 200 is sleeved outside the main shaft 100 and slides along the axial direction of the main shaft 100. The magnet rotor assembly 200 includes a plurality of magnets 202, two magnet disks 201, two magnet rotor guide disks 203, and two guide rings 204. Among them, the plurality of magnets 202 are arranged around the magnet disk 201. The two magnet disks 201 are arranged oppositely along the axial direction of the main shaft 100. The two magnet rotor guide disks 203 are sleeved outside the two magnet disks 201. The two guide rings 204 are relatively arranged between the two magnet rotor guide disks 203. The two ends of the main shaft 100 respectively pass through the two guide rings 204, the two magnet rotor guide disks 203, and the two magnet disks 201 in sequence.

[0045] Refer to the appendix Figure 2 , in some embodiments, the eddy current rotor assembly 300 is sleeved outside the magnet rotor assembly 200. The eddy current rotor assembly 300 includes two guide disks 302, a magnetic outer shell 301, and two conductive disks 303. The edge of the magnetic outer shell 301 extends towards the main shaft 100 to form a boss 3011. The two guide disks 302 are respectively covered on the two bosses 3011 at both ends of the magnetic outer shell 301 to enclose an explosion-proof space. The two conductive disks 303 are fixedly arranged on the two guide disks 302. The two conductive disks 303 are located in the explosion-proof space. The magnet rotor assembly 200 is located in the explosion-proof space. The main shaft 100 passes through the guide disk 302 and extends out of the explosion-proof space. Any one of the guide disks 302 is connected to a load device for outputting torque, or connected to a motor for inputting torque.

[0046] It should be noted that when the main shaft 100 is connected to a motor or a load device, the guide disk 302 is relatively connected to the load device or the motor to ensure that both ends of the mining limited rectangular magnetic coupling are respectively connected to the motor and the load device. Those skilled in the art should swap the input side and the output side of the mining limited torque magnetic coupler according to the on-site working requirements; when the motor is connected to the guide disk 302 and inputs torque through the eddy current rotor assembly 300, an induced magnetic field will be generated when the magnet rotor assembly 200 and the eddy current rotor assembly 300 move relative to each other, thereby generating torque to drive the main shaft 100 to rotate. The load device connected to the main shaft 100 can receive the torque transmitted by the main shaft 100 to make the load device do work; vice versa.

[0047] Refer to the appendix Figure 1 And the appendix Figure 2 , in some embodiments, the heat dissipation member 800 is arranged on the side of the magnetic outer shell 301 and the two guide disks 302 away from the explosion-proof space. The heat dissipation member 800 is a heat dissipation fin. The heat dissipation member 800 is arranged in parallel on the magnetic outer shell 301. The heat dissipation member 800 is arranged on the two guide disks 302 in a concentric distribution. The heat dissipation member 800 is used to increase the contact area between the magnetic outer shell 301, the two guide disks 302 and the air, thereby enhancing the heat dissipation effect.

[0048] Refer to the appendix Figure 2, in some embodiments, the first limiting assembly is disposed at both ends of the main shaft 100. The first limiting assembly includes a first limiting member 401, a first bearing 402, a second bearing 403, and an adjusting member 404. Among them, the first limiting member 401 is disposed at one end of the main shaft 100, and the guide disk 302 is located between the first limiting member 401 and the magnet rotor assembly 200. The first limiting member 401 includes, but is not limited to, a bearing retaining ring, a bearing baffle, a bearing sleeve, and a bearing circlip. The first limiting member 401 is used to limit the axial displacement of the main shaft 100 along its axis.

[0049] Reference attachment Figure 2 , in some embodiments, at least two bearing grooves are provided on the main shaft 100. The two bearing grooves are used to place the first bearing 402 and the second bearing 403. The first bearing 402 is sleeved outside the main shaft 100 and is located in one bearing groove. The first bearing 402 is located between the first limiting member 401 and the guide disk 302. The first bearing 402 is used to prevent the direct contact between the guide disk 302 and the first limiting member 401, reduce the friction between the guide disk 302 and the first limiting member 401, and thus assist the rotation of the main shaft 100.

[0050] The second bearing 403 is sleeved outside the main shaft 100 and is located in the other bearing groove. The second bearing 403 is located at one end of the main shaft 100 relatively far from the first bearing 402. The second bearing 403 is used to cooperate with the first bearing 402 to assist the rotation of the main shaft 100. And when assembling the adjusting member 404, the second bearing 403 is also used to prevent the direct contact between the guide disk 302 and the adjusting member 404, and reduce the friction between the guide disk 302 and the adjusting member 404.

[0051] The adjusting member 404 is disposed on one side of the second bearing 403. The adjusting member 404 includes, but is not limited to, a screw, a pin, and a rivet. The adjusting member 404 is used for axial displacement along the main shaft 100, and one end of the adjusting member 404 abuts against the second bearing 403 to increase or decrease the first preset gap and the second preset gap.

[0052] Specifically, after the adjusting member 404 abuts against the second bearing 403 and causes axial displacement along the main shaft 100, by fixing the relative position of the adjusting member 404 and the main shaft 100, the axial displacement of the main shaft 100 along its axis is restricted. If the main shaft 100 displaces axially towards the end away from the first bearing 402, the first limiting member 401 abuts against the guide disk 302 through the first bearing 402 to restrict the continuous displacement of the main shaft 100. If the main shaft 100 displaces axially towards the end away from the second bearing 403, the adjusting member 404 abuts against the guide disk 302 through the second bearing 403 to restrict the continuous displacement of the main shaft 100. The adjusting member 404 is also used to adjust the reasonable pre-tightening force of the first bearing 402 and the second bearing 403 in the working state.

[0053] Reference attachment Figure 2, in some embodiments, at least two second limiting members 500 are provided on the main shaft 100. The first limiting member 401 includes, but is not limited to, a retaining ring, a baffle plate, a bushing, and a snap ring. The second limiting members 500 are located between the magnet rotor assembly and the guide disk 302. The two second limiting members 500 are used to limit the axial sliding of the magnet rotor assembly along the main shaft 100. The two second limiting members 500 cooperate with the first limiting assembly to make the two ends of the magnet rotor assembly 200 be separated from the two bosses 3011 by a first preset gap and a second preset gap respectively.

[0054] Specifically, since the boss 3011 formed by the edge of the magnetic housing 301 extending towards the main shaft 100 has magnetism, the boss 3011 generates an attractive force on the magnet rotor assembly 200 which also has magnetism, causing the magnet rotor assembly 200 to slide relative to the main shaft 100 towards the boss 3011. By using the two second limiting members 500 to limit the axial sliding of the magnet rotor assembly along the main shaft 100 towards the two bosses 3011 located at both ends of the main shaft 100, the generation of sparks due to friction between the magnet rotor assembly and the vortex rotor assembly 300 can be avoided.

[0055] It should be noted that when the positions of the two second limiting members 500 relative to the main shaft 100 remain unchanged, by adjusting the adjusting member 404 to adjust the position of the second bearing 403 relative to the main shaft 100, the displacement limit of the main shaft 100 along its axis can be adjusted. Furthermore, the displacement limit of the main shaft 100 and the magnet rotor assembly together along the axis of the main shaft 100 can be changed. Based on the above adjustment process, the first preset gap and the second preset gap can be controlled to increase or decrease by adjusting the adjusting member 404.

[0056] The first preset gap and the second preset gap are the gaps between the left and right ends of the magnet rotor assembly 200 and the two bosses 3011 respectively. Since it is necessary to avoid contact and friction between the magnet rotor assembly and the vortex rotor assembly 300, a conductive disk 303 also needs to be installed between the magnet rotor assembly 200 and the guide disk 302. Therefore, those skilled in the art should set the first preset gap and the second preset gap according to the actual situation. In some embodiments, the first preset gap and the second preset gap are equal. In some embodiments, the first preset gap and the second preset gap are not equal.

[0057] In some embodiments, when the magnet rotor assembly 200 drives the main shaft 100 to rotate and desires to displace beyond the first preset gap or the second preset gap, the first limiting member 401 is used to limit the axial displacement of the main shaft 100 along the main shaft 100, and at the same time, the second limiting member 500 is used to limit the axial displacement of the magnet rotor assembly 200 along the main shaft 100.

[0058] Specifically, the first axial direction of the main shaft 100 is opposite to the second axial direction of the main shaft 100; when the magnet rotor assembly 200 drives the main shaft 100 to rotate and wants to displace along the first axial direction of the main shaft 100 beyond the first preset gap, the first limiting member 401 pushes against the guide disk 302 through the first bearing 402 to limit the displacement of the main shaft 100 along the first axial direction of the main shaft 100. At the same time, the second limiting member 500 away from the first bearing 402 pushes against the magnet rotor assembly 200 to limit the displacement of the magnet rotor assembly 200 along the first axial direction of the main shaft 100, so that there is always a first preset gap between the magnet rotor assembly 200 and one of the bosses 3011.

[0059] When the magnet rotor assembly 200 drives the main shaft 100 to rotate and wants to displace along the second axial direction of the main shaft 100 beyond the second preset gap, the adjusting member 404 pushes against the guide disk 302 through the second bearing 403 to limit the displacement of the main shaft 100 along the second axial direction of the main shaft 100. At the same time, the second limiting member 500 away from the second bearing 403 pushes against the magnet rotor assembly 200 to limit the displacement of the magnet rotor assembly 200 along the second axial direction of the main shaft 100, so that there is always a second preset gap between the magnet rotor assembly 200 and the other boss 3011.

[0060] Reference appendix Figure 2 Referring to the appendix, in some embodiments, a positioning step 3021 is further provided at the edge of the guide disk 302. The positioning step 3021 and the boss 3011 cooperate to form a first explosion-proof joint; a clearance fit is set between the main shaft 100 and the two guide disks 302, and a second explosion-proof joint is formed at the clearance fit. The first explosion-proof joint and the second explosion-proof joint are used to prevent sparks from entering or escaping from the explosion-proof space.

[0061] Specifically, the first explosion-proof joint is an explosion-proof joint surface formed by the two opposite surfaces of the positioning step 3021 and the boss 3011 in relative contact; a relief hole is provided on the two guide disks 302. The main shaft 100 passes through the two guide disks 302 through the relief hole. The two guide disks 302 are in clearance fit with the main shaft 100 through the relief hole, and a skeleton oil seal is used at the clearance fit, thereby forming a second explosion-proof joint. The second explosion-proof joint can ensure that the hole wall of the relief hole does not contact and rub against the opposite side wall of the main shaft 100, and is used to prevent combustible gas from passing through, meeting the non-explosion-transmission requirements of GB / T 3836.2-2021. The first explosion-proof joint and the second explosion-proof joint isolate the explosion-proof space from the outside world and are used to prevent sparks from entering or escaping from the explosion-proof space.

[0062] It should be noted that the positioning step 3021 is also used to ensure that the two guide disks 302 are concentric with the magnetic housing 301 after assembly.

[0063] Reference appendix Figure 2, in some embodiments, the input connector 600 is provided at one end of the main shaft 100, or the input connector 600 is provided at one end of the guide disk 302; the output connector 700 is provided at one end of the guide disk 302 relative to the input connector 600, or the output connector 700 is provided at one end of the main shaft 100 relative to the input connector 600.

[0064] Specifically, the input connector 600 is fastened to one end of the main shaft 100 or the guide disk 302 by bolts, and an O-ring seal is provided on the joint surface to form a sealing structure to prevent combustible gas from entering the explosion-proof space; the output connector 700 is provided at one end of the main shaft 100 or the guide disk 302 relative to the input connector 600 and is connected by a square hole, a hexagonal hole, a spline, a plum blossom elastic coupling or other similar structures to facilitate the disassembly and assembly of the output connector 700.

[0065] Refer to the appendix Figure 2 , in some embodiments, the adjusting member 404 is rotatably provided on the input connector 600 or the output connector 700. When the adjusting member 404 is rotated, the adjusting member 404 is used to displace axially along the main shaft 100 relative to the input connector 600 or the output connector 700, so as to push the second bearing 403 to adjust the first preset gap and the second preset gap, which facilitates the person skilled in the art to directly adjust the adjusting member 404 without disassembling the input connector 600 or the output connector 700.

[0066] In some embodiments, a protective cover is sleeved outside the vortex rotor assembly 300. One end of the protective cover is open, and the open end of the protective cover is connected to a placement plane for placing the mining-limited rectangular magnetic coupling, so that the open end of the protective cover is reliably grounded, isolating the mining-limited rectangular magnetic coupling from the outside, avoiding dust from contacting the mining-limited rectangular magnetic coupling, and further reducing the risk of sparks entering or escaping from the mining-limited rectangular magnetic coupling.

[0067] In some embodiments, a temperature sensor is provided on the protective cover. The temperature sensor includes but is not limited to an infrared temperature sensor, a thermistor temperature sensor, a resistance temperature sensor, a transistor temperature sensor, and an optical fiber temperature sensor. The temperature sensor is electrically connected to a control center. The temperature sensor is used to monitor the temperature of the vortex rotor assembly 300 in real time. When the temperature reaches a set threshold and is in an abnormal state, the temperature sensor sends an electrical signal to the control center. The control center cuts off the power supply of the motor according to the real-time temperature and sends an alarm signal, thus having the function of logical explosion protection.

[0068] It should be noted that, in some embodiments, the temperature sensor is provided on the mining-limited rectangular magnetic coupling. According to the type of the temperature sensor or the different working scenarios of the mining-limited rectangular magnetic coupling, the specific position of the temperature sensor is set by the person skilled in the art himself.

[0069] During the operation of the mine-used torque-limiting magnetic coupler, the second conductive disk 302 and the second conductive plate 303 in the eddy current rotor assembly 300 are located at the left and right ends of the main shaft 100 and rotate synchronously. The second magnet disk 201, the second magnet rotor conductive disk 302, and the second guide ring 204 in the magnet rotor assembly 200 are located at the left and right ends of the main shaft 100 and rotate synchronously. When the magnet rotor assembly 200 and the eddy current rotor assembly 300 move relative to each other, an induced magnetic field will be generated, thereby generating torque and having the function of transmitting torque. There is a first preset gap and a second preset gap between the magnet rotor assembly 200 and the eddy current rotor assembly 300, and there is no direct contact. Through magnetic induction transmission, it has the functions of flexible transmission and soft start. The magnet rotor assembly 200 is slidably arranged on the main shaft 100. When the load reaches the designed overload threshold, it can adaptively control itself to weaken or disconnect the magnetic induction transmission, thereby having the functions of limiting torque and protecting the motor.

[0070] For the mine-used torque-limiting magnetic coupler of the present application, the first limiting component is used to limit the axial movement of the main shaft 100, thereby avoiding the movement of the magnet rotor assembly 200 sleeved on the main shaft 100 in the direction close to the conductive disk 302. At the same time, the second limiting member 500 is used to further limit the axial movement of the magnet rotor assembly 200 along the main shaft 100, so as to cooperate with the first limiting component to make both ends of the magnet rotor assembly 200 separated from the two bosses 3011 by a first preset gap and a second preset gap; by the adjusting member 404 pushing against the second bearing 403, the magnitude of the pre-tightening force is changed, and at the same time, the first preset gap and the second preset gap are adjusted; by setting the first explosion-proof joint and the second explosion-proof joint to prevent sparks from entering or escaping from the explosion-proof space.

[0071] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner. The key point of each embodiment is to describe the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0072] The above embodiments are only used to illustrate the technical solutions of the present application and not to limit them; although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: still can modify the specific implementation manners of the present application or perform equivalent replacement of some technical features; without departing from the spirit of the technical solutions of the present application, they should all be covered within the scope of the technical solutions claimed in the present application.

Claims

1. A mine-used limited rectangular magnetic coupler, characterized in that, The described mine-used limited-rectangle magnetic coupling includes: A main shaft, one end of the main shaft is connected to a motor for inputting torque, or connected to a load device for outputting torque; A magnet rotor assembly, the magnet rotor assembly is sleeved outside the main shaft and slides axially along the main shaft; An eddy current rotor assembly, the eddy current rotor assembly is sleeved outside the magnet rotor assembly, the eddy current rotor assembly includes two conducting disks and a magnetic housing, the edge of the magnetic housing extends towards the main shaft to form a boss, the two conducting disks are respectively covered on the two bosses at both ends of the magnetic housing to enclose an explosion-proof space, the magnet rotor assembly is located inside the explosion-proof space, the main shaft passes through the conducting disk and extends out of the explosion-proof space, any one of the conducting disks is connected to a load device for outputting torque, or connected to a motor for inputting torque; A first limiting component, the first limiting component is arranged at both ends of the main shaft, and the first limiting component is used to limit the axial sliding of the main shaft; Second limiting members, at least two second limiting members are arranged on the main shaft, the second limiting members are located between the magnet rotor assembly and the conducting disk, the two second limiting members are used to limit the axial sliding of the magnet rotor assembly along the main shaft; the two second limiting members cooperate with the first limiting component to make both ends of the magnet rotor assembly be separated from the two bosses by a first preset gap and a second preset gap respectively.

2. The mining limited rectangular magnetic coupler according to claim 1, wherein, The first limiting component includes: A first limiting member, the first limiting member is arranged at one end of the main shaft, and the conducting disk is located between the first limiting member and the magnet rotor assembly; A first bearing, the first bearing is sleeved outside the main shaft, and the first bearing is located between the first limiting member and the conducting disk; A second bearing, the second bearing is sleeved outside the main shaft, and the second bearing is located at the end of the main shaft relatively far from the first bearing.

3. The mining limited rectangular magnetic coupler according to claim 2, wherein The first limiting component further includes: An adjusting member, the adjusting member is arranged on one side of the second bearing, the adjusting member is used for axial displacement along the main shaft and one end of the adjusting member abuts against the second bearing to increase or decrease the first preset gap and the second preset gap.

4. The mining limited rectangular magnetic coupler according to claim 3, characterized in that, When the magnet rotor assembly drives the main shaft to rotate and wants to displace beyond the first preset gap or the second preset gap, the first limiting member is used to limit the axial displacement of the main shaft along the main shaft, and at the same time the second limiting member is used to limit the axial displacement of the magnet rotor assembly along the main shaft.

5. The mine-used limited rectangular magnetic coupling according to claim 1, characterized in that, A positioning step is further arranged at the edge of the conducting disk, and the positioning step and the boss cooperate to form a first explosion-proof joint; a clearance fit is set between the main shaft and the two conducting disks, and the clearance fit forms a second explosion-proof joint, and the first explosion-proof joint and the second explosion-proof joint are used to prevent sparks from entering or escaping from the explosion-proof space.

6. The mining limited rectangular magnetic coupler according to claim 3, wherein It further includes: An input connecting piece, the input connecting piece is arranged at one end of the main shaft, or the input connecting piece is arranged at one end of the conducting disk; The output connecting piece, the output connecting piece is arranged at one end of the guide disk relative to the input connecting piece, or the output connecting piece is arranged at one end of the main shaft relative to the input connecting piece.

7. The mining limited rectangular magnetic coupler according to claim 6, characterized in that, The adjusting piece is rotatably arranged on the input connecting piece or the output connecting piece. When the adjusting piece is rotated, the adjusting piece is used to axially displace relative to the input connecting piece or the output connecting piece along the main shaft, so as to push the second bearing to adjust the first preset gap and the second preset gap.

8. The mine-used limited rectangular magnetic coupler according to claim 1, characterized in that Further comprising: A protective cover, the protective cover is sleeved outside the vortex rotor assembly, and one end of the protective cover is connected to a placement plane.

9. The mine-used limited rectangular magnetic coupler according to claim 8, wherein Further comprising: A temperature sensor, the temperature sensor is arranged on the protective cover, the temperature sensor is electrically connected to a control center, and the temperature sensor is used to monitor the temperature of the vortex rotor assembly in real time.

10. The mine-used limited-rectangle magnetic coupler according to any one of claims 1-9, characterized in that, Further comprising: A heat dissipation piece, the heat dissipation piece is arranged on the magnetic housing and the side of the two guide disks away from the explosion-proof space.

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