Special explosion-proof motor

Abstract

The application relates to a special explosion-proof motor, which comprises a shell, a rotating shaft installed in the shell, two oil injection devices and two bearings installed at the two ends of the rotating shaft, two oil injection grooves are formed in the shell, the two oil injection grooves correspond to the two bearings respectively and are communicated with the corresponding bearings, the two oil injection devices correspond to the two oil injection grooves respectively, and the oil injection device automatically injects oil into the corresponding oil injection groove once every time the motor operates. The design is used for the motor working for a long time, the oil injection device automatically injects oil into the corresponding oil injection groove once every time the motor operates, the lubricating oil in the oil injection groove enters the bearings to lubricate the bearings due to the direct communication between the oil injection groove and the bearings, and the shell does not need to be disassembled, so that the operator can conveniently lubricate the bearings on the motor.

Description

Technical Field

[0001] The present application relates to the field of electric motors, and in particular to a special explosion-proof electric motor. Background Art

[0002] An electric motor converts electrical energy into mechanical energy. It uses a energized coil to generate a rotating magnetic field, which acts on the rotor to generate magneto-electrodynamic torque. Explosion-proof motors are explosion-proof. Bearings, which support the shaft, are crucial components in electric motors.

[0003] The explosion-proof motors of related technologies are mainly used for long-term work. Each time the motor stops working and then resumes working, the operator needs to re-lubricate the bearings. The operator disassembles the end cover of the motor and injects lubricating oil into the bearings.

[0004] The above-mentioned related technical solutions have the following defects: each time the bearing is lubricated, the end cover of the motor needs to be disassembled and assembled, and the whole process is relatively troublesome. Summary of the Invention

[0005] In order to facilitate operators to lubricate the bearings on the motor, the present application provides a special explosion-proof motor.

[0006] The special explosion-proof motor provided in this application adopts the following technical solution:

[0007] A special explosion-proof motor includes a casing, a rotating shaft installed in the casing, two oil filling devices, and two bearings installed at both ends of the rotating shaft. Two oil filling grooves are provided in the casing, the two oil filling grooves respectively correspond to the two bearings and are connected to the corresponding bearings. The two oil filling devices respectively correspond to the two oil filling grooves. Each time the motor runs once, the oil filling devices automatically fill oil into the corresponding oil filling grooves once.

[0008] By adopting the above technical solution, the above design is aimed at motors that work for a specific long time. Every time the motor runs, the oil filling device automatically fills oil into the corresponding oil filling groove once. Since the oil filling groove is directly connected to the bearing, the lubricating oil in the oil filling groove will enter the bearing to lubricate the bearing. The operator no longer needs to disassemble the housing, which makes it convenient for the operator to lubricate the bearings on the motor.

[0009] Preferably, the oil filling device includes a driving member 1, a plug and an oil filling block with an inner cavity, an annular groove is provided on the housing, a fixing ring is coaxially sleeved and fixed on the rotating shaft, the fixing ring is rotatably connected in the annular groove, the oil filling block is embedded in and fixed on the fixing ring, the plug is slidably connected to the inner cavity and divides the inner cavity into a main cavity and a sub-cavity that are not connected to each other, an opening is provided on the bottom wall of the main cavity away from the sub-cavity, the opening is provided with a control member, the control member is used to control the opening and closing of the opening, a connecting channel connecting the opening and the oil filling groove is provided on the fixing ring, and the driving member 1 drives the plug to slide on the inner cavity;

[0010] An oil storage tank with an oil storage chamber is provided at the top of the casing, an annular transition chamber is provided in the casing, a first channel connecting the oil storage tank and the annular transition chamber is provided on the casing, the lubricating oil in the oil storage chamber automatically fills the annular transition chamber through the first channel, a connecting port connected to the annular transition chamber is provided on the inner wall of the main chamber, a one-way valve is provided on the connecting port, the one-way valve only allows the lubricating oil in the annular transition chamber to flow to the main chamber, when the motor is started, the driving member drives the plug to slide toward one side of the main chamber, and the control member controls the opening to open, when the motor is turned off, the driving member drives the plug to slide toward one side of the secondary chamber, and the control member controls the opening to close.

[0011] By adopting the above technical solution, when the motor is turned off, the driving member drives the plug to slide toward the side of the secondary cavity, and the opening is closed. During the sliding process of the plug, the volume of the main cavity gradually increases, and the lubricating oil in the annular transition cavity flows into the main cavity; when the motor is started, the driving member drives the plug to slide toward the side of the main cavity, and the opening is opened at the same time. At this time, the volume of the main cavity gradually decreases, and the lubricating oil in the main cavity will be pressed out from the opening and flow into the oil filling groove through the connecting channel to lubricate the bearing.

[0012] Preferably, the connecting channel is curved, and one end of the connecting channel communicating with the oil filling groove is oriented toward and facing the corresponding bearing.

[0013] By adopting the above technical solution, when the motor starts, the plug moves to drive the lubricating oil to flow out of the connecting channel. Since the end of the connecting channel connected to the oil filling groove is facing and opposite to the corresponding bearing, if the flow rate of the lubricating oil is slightly faster, it can be directly injected into the bearing, which can better lubricate the bearing.

[0014] Preferably, the driving member includes a reset member, a movable rod, a gear and a push rod, the push rod is fixed on the plug, the gear is rotatably connected to the fixed ring, the movement direction of the push rod is perpendicular to the axial direction of the rotating shaft, the movable rod is slidably connected to the fixed ring along the movement direction parallel to the push rod, the gear is located between the push rod and the movable rod and is meshedly connected to the push rod and the movable rod, when the rotating shaft rotates, the movable rod moves toward the side away from the rotating shaft under the action of centrifugal force, and the plug moves toward the side of the inner cavity to squeeze out the lubricating oil, and when the rotating shaft stops rotating, the reset member drives the plug to move toward the side of the auxiliary cavity.

[0015] By adopting the above technical solution, when the motor starts, the motor shaft rotates and drives the movable rod to rotate through the fixed ring. Under the action of centrifugal force, the movable rod slides away from the side of the shaft, and then drives the lower rod to rotate toward the side of the shaft through the gear, so that the piston can automatically slide toward the side of the main cavity and squeeze out the lubricating oil.

[0016] Preferably, the reset member includes a first spring. When the rotating shaft stops rotating, the first spring is connected to the plug and drives the plug to overcome the influence of the movable rod and move toward the auxiliary cavity.

[0017] By adopting the above technical solution, when the motor stops rotating, the movable rod is no longer affected by centrifugal force. At this time, the first spring will act on the plug head to make the plug head overcome the influence of the movable rod and move toward the side of the secondary cavity, thereby realizing automatic filling of the lubricating oil in the main cavity.

[0018] Preferably, the control component includes a second spring, a deformation cover and a plug matching the opening, the deformation cover is fixed on the plug, the second spring connects the plug and the oil filling block and drives the plug to block the opening, when the motor stops running, the second spring drives the plug to block the opening, the deformation cover abuts against the bottom wall of the main cavity on one side of the opening and blocks the opening, when the motor is working, the plug and the deformation cover move toward one side of the main cavity under the action of centrifugal force until the opening is connected to the main cavity.

[0019] By adopting the above technical solution, when the motor is working, the rotating shaft drives the plug to rotate, and the plug and the deformation cover overcome the elastic force of the second spring under the action of centrifugal force and move toward the side of the main cavity, thereby moving the plug away from the opening and connecting the opening with the main cavity. At this time, the lubricating fluid in the main cavity can flow out from the opening.

[0020] Preferably, the plug is fixed at the center of the deformation cover, the deformation cover is elastically deformable, and the edge of the deformation cover is hinged with multiple rotating blocks in sequence along the circumferential direction. The rotating blocks are slidably connected to the bottom wall of the inner cavity on the side of the opening along a sliding direction perpendicular to the sliding direction of the plug. The edge of the deformation cover is provided with multiple notches. When the motor is working, the plug moves toward one side of the deformation cover until the center of the deformation cover bulges toward the side of the plug and generates elastic deformation, and the lubricating oil flows to the opening through the notch.

[0021] By adopting the above technical solution, the plug is not only connected to the oil filling block by the second spring, but the deformation cover is also connected to the oil filling block. When the second spring is damaged, the deformation cover can also play a certain role, and the connection of the opening is automatically controlled by the elastic deformation of the deformation cover; at the same time, during the oil filling process, the center of the deformation cover bulges toward the side of the plug, and the side surface of the deformation cover facing the plug is arranged in an arc shape, so that the lubricating oil in the main cavity can flow to the opening better through the notch along the arc surface.

[0022] Preferably, the opening is arranged in a conical shape, and the opening gradually shrinks from an end close to the main cavity to an end away from the main cavity.

[0023] By adopting the above technical solution, since the opening is set in a conical shape, the plug does not need to be completely moved away from the opening to connect the opening with the main cavity. When the motor is running, the opening can be connected with the main cavity more smoothly.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] By setting up an oil filling groove and an oil filling device, each time the motor runs, the oil filling device automatically fills the corresponding oil filling groove with oil. Since the oil filling groove is directly connected to the bearing, the lubricating oil in the oil filling groove will enter the bearing to lubricate the bearing. The operator does not need to disassemble the housing, which makes it convenient for the operator to lubricate the bearings on the motor.

[0026] By setting the opening in a conical shape, the plug does not need to be completely moved away from the opening to connect the opening with the main cavity. When the motor is running, the opening can be connected with the main cavity more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0028] Figure 2 It is along Figure 1 Sectional view along line AA.

[0029] Figure 3 yes Figure 2 Enlarged view of point B in the middle.

[0030] Figure 4This is a cross-sectional view of the oil filling process of the oil filling device when the motor is running in an embodiment of the present application.

[0031] Figure 5 It is a structural diagram of the deformation cover and the plug during the oil filling process.

[0032] Explanation of Reference Numerals: 1. Casing; 11. End Cover; 12. Rotating Shaft; 13. Bearing; 14. Oil Filling Groove; 15. Base; 16. Oil Storage Tank; 161. Oil Storage Chamber; 162. Plug; 163. Oil Filling Hole; 17. Annular Groove; 171. Spacer; 18. Annular Transition Chamber; 181. First Passageway; 19. Fixing Ring; 2. Oil Filling Device; 21. Driving Component 1; 211. Movable rod; 212. Retaining rod; 213. Gear; 214. Bar teeth; 215. Resetting member; 2151. First spring; 22. Oil filling block; 23. Inner cavity; 231. Sub-cavity; 232. Main cavity; 2321. Connecting port; 2322. Limiting groove; 2323. Through port; 24. Plug; 25. Opening; 26. Connecting channel; 27. Control member; 271. Plug; 272. Deformation cover; 2721. Notch; 273. Rotating block; 274. Slider; 28. Slide groove; 281. Second spring. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 This application is described in further detail.

[0034] The embodiment of the present application discloses a special explosion-proof motor.

[0035] Reference Figure 1 、 Figure 2 The special explosion-proof motor of this embodiment includes a housing 1, a rotating shaft 12, two end caps 11, two sets of oil injection devices 2, and two bearings 13. The two end caps 11 are respectively mounted at both ends of the housing 1. The two bearings 13 are respectively sleeved and mounted at both ends of the rotating shaft 12. The two bearings 13 are respectively mounted within the housing 1 and disposed near the front end cap 11 and the rear end cap 11. The rotating shaft 12 is rotatably connected to the housing 1 via the two bearings 13, and one end of the rotating shaft 12 extends out of the housing 1.

[0036] Reference Figure 2 、 Figure 3 Two oil filling grooves 14 are defined within the housing 1. Each oil filling groove 14 corresponds to one bearing 13. The oil filling grooves 14 are located adjacent to and communicate with the corresponding bearings 13. The vertical cross-section of the oil filling grooves 14 is circular and coaxial with the rotating shaft 12. Lubricating oil within the oil filling grooves 14 can flow directly to and lubricate the corresponding bearings 13. Two sets of oil filling devices 2 correspond to the two oil filling grooves 14, respectively. Each time the motor operates, the oil filling devices 2 automatically fill the corresponding oil filling grooves 14 with oil.

[0037] Reference Figure 2 、 Figure 3 Two annular grooves 17 are defined in the housing 1. Annular grooves 17 are coaxially disposed with the rotating shaft 12. The two annular grooves 17 correspond to two sets of oil injection devices 2, respectively. Annular grooves 17 are located on the side of the oil injection groove 14 away from the corresponding bearing 13. A retaining ring 19 is coaxially sleeved and fixed on the rotating shaft 12, and rotatably connected to the annular groove 17. To ensure that the rotating shaft 12 drives the retaining ring 19 with relatively balanced stability during rotation, each set of oil injection devices 2 includes two oil injection devices 2, which are respectively mounted on corresponding retaining rings 19 and arranged directly opposite each other.

[0038] Reference Figure 2 、 Figure 3 The oiling device 2 includes a driving member 21, a plug 24, and an oiling block 22 with an inner cavity 23. A gap 171 is left between the circumferential outer wall of the fixing ring 19 and the circumferential inner wall of the annular groove 17 to allow the oiling device 2 to move. The oiling block 22 is embedded in and fixed to the fixing ring 19. The plug 24 is slidably connected to the inner cavity 23 in a direction perpendicular to the axis of the rotating shaft 12, dividing the inner cavity 23 into a main cavity 232 and a secondary cavity 231 that are not connected to each other. The driving member 21 drives the plug 24 to slide on the inner cavity 23. The main cavity 232 is located near the side of the plug 24. An opening 25 is formed in the bottom wall of the main cavity 232 on the side away from the secondary cavity 231. The opening 25 is provided with a control member 27 for controlling the opening and closing of the opening 25. A through-hole 2323 is defined in the bottom wall of the secondary cavity 231, facing away from the primary cavity 232. This through-hole 2323 communicates with the gap 171 between the outer circumferential wall of the retaining ring 19 and the inner circumferential wall of the annular groove 17. The side of the retaining ring 19 facing the oil filling groove 14 is connected to the oil filling groove 14. The retaining ring 19 is provided with a connecting opening 25 and a connecting channel 26 to the oil filling groove 14. The connecting channel 26 is L-shaped, with the end of the connecting channel 26 connecting to the oil filling groove 14 extending parallel to the axis of the rotating shaft 12 and facing the corresponding bearing 13.

[0039] Reference Figure 1 、 Figure 2 A base 15 is fixed to the bottom of the casing 1, and the base 15 is used to support the casing 1 on a horizontal plane. An oil storage tank 16 with an oil storage cavity 161 is fixed to the top of the casing 1. The oil storage tank 16 is located between the two annular grooves 17. The oil storage cavity 161 is used to store lubricating oil. An oil filling hole 163 connected to the outside is opened at the top of the oil storage tank 16, and a plug 162 is threadedly connected to the oil filling hole 163.

[0040] Reference Figure 2 、 Figure 3Two annular transition chambers 18 are defined within the housing 1, corresponding to two oil injection blocks 22. The annular transition chambers 18 are located on the side of the corresponding annular groove 17, away from the corresponding oil injection groove 14. Two first passages 181 are defined within the housing 1, corresponding to the two annular transition chambers 18. These first passages 181 connect the oil reservoir 16 with the corresponding annular transition chamber 18. The first passages 181 are located above the annular transition chambers 18. When the lubricating oil in the annular transition chambers 18 decreases, the lubricating oil in the oil reservoir 16 automatically flows into the annular transition chambers 18. A communication port 23232321 is defined on the inner wall of the main chamber 232 facing the annular transition chamber 18. A one-way valve is installed in the communication port 23232321, allowing the lubricating oil in the annular transition chamber 18 to flow only into the main chamber 232. The annular transition chamber 18 communicates only with the reservoir and the communication port 23232321.

[0041] Reference Figure 3 、 Figure 4 When the motor is turned off, the driving member 21 drives the plug 24 to slide toward the side of the secondary cavity 231, and the control member 27 controls the opening 25 to close. During the sliding of the plug 24, the volume of the main cavity 232 gradually increases, and the lubricating oil in the annular transition cavity 18 flows into the main cavity 232; when the motor is started, the driving member 21 drives the plug 24 to slide toward the side of the main cavity 232, and the control member 27 controls the opening 25 to open. At this time, the volume of the main cavity 232 gradually decreases, and the lubricating oil in the main cavity 232 will be pressed out from the opening 25 and flow into the oil filling groove 14 through the connecting channel 26 to lubricate the bearing 13.

[0042] Reference Figure 3 、 Figure 4 The driving member 1 21 includes a reset member 215, a movable rod 211, a gear 213, and a push rod 212. One end of the push rod 212 is vertically fixed to the center of the side of the plug 24 facing the auxiliary cavity 231. The gear 213 is rotatably connected to the fixed ring 19. The rotation axis of the gear 213 is perpendicular to the movable direction of the push rod 212. The movable rod 211 is slidably connected to the fixed ring 19 along a direction parallel to the movement of the push rod 212. The gear 213 is located between the push rod 212 and the movable rod 211. The side of the push rod 212 and the movable rod 211 facing the gear 213 are each provided with a bar tooth 214. The gear 213 is meshed with the bar teeth 214 of the push rod 212 and the movable rod 211. The end of the push rod 212 away from the plug 24 extends from the opening 2323 into the gap 171. One end of the movable rod 211 is slidably connected to the fixed ring 19, and the other end of the movable rod 211 extends into the gap 171.

[0043] Reference Figure 3 、 Figure 4The reset member 215 includes two first springs 2151. The two ends of the first spring 2151 are respectively fixed on the side of the plug 24 facing the secondary cavity 231 and the bottom wall of the secondary cavity 231 away from the main cavity 232. The two first springs 2151 are respectively located at the two ends of the plug 24. When the plug 24 moves toward the side of the main cavity 232 to close to the opening 25, the first spring 2151 is in a stretched state and its elastic potential energy gradually increases.

[0044] Reference Figure 3 、 Figure 4 The movable rod 211 is heavier, while the push rod 212 and the plug 24 are lighter. When the rotating shaft 12 rotates, the movable rod 211 moves toward the side away from the rotating shaft 12 under the action of centrifugal force. Due to the heavier weight of the movable rod 211, the movable rod 211 can overcome the centrifugal force of the push rod 212 and the plug 24, as well as the resistance of the lubricating oil to the plug 24, and automatically slide toward the side away from the rotating shaft 12. Then, the movable rod 211 drives the push rod 212 to slide toward the main cavity 232 through the gear 213, thereby driving the plug 24 to squeeze the lubricating oil toward the opening 25 to lubricate the bearing 13. When the rotating shaft 12 stops rotating, the movable rod 211 and the push rod 212 are no longer affected by the centrifugal force. The first spring 2151 drives the plug 24 to overcome the influence of the movable rod 211 and the push rod 212 and move toward the secondary cavity 231, thereby achieving automatic filling of the lubricating oil in the main cavity 232.

[0045] Reference Figure 4 、 Figure 5 The control member 27 includes a deformable cover 272, a plug 271 that matches the opening 25, and two second springs 281. The opening 25 is conical, tapering from the end closest to the main cavity 232 to the end away from the main cavity 232. The deformable cover 272 is fixed to the end of the plug 271 facing the main cavity 232. The cross-section of the deformable cover 272 is circular, and the end of the plug 271 is fixed to the center of the deformable cover 272. Two sliders 274 are fixed to the plug 271, and the two sliders 274 are located on either side of the plug 271. Two slide grooves 28 that match the two sliders 274 are formed on the side wall of the opening 25. The sliders 274 slide in parallel with the sliding direction of the plug 24 and are connected to the corresponding slide grooves 28. The two second springs 281 correspond to the two sliders 274 respectively. The two ends of the second spring 281 are respectively fixed on the side surface of the corresponding slider 274 away from the main cavity 232 and the side wall of the corresponding slide 28 away from the main groove. The second spring 281 is always in a stretched state.

[0046] Reference Figure 4 、 Figure 5The deformation cover 272 has a certain elastic deformation capacity, four rotating blocks 273 are uniformly hinged on the edge of the deformation cover 272 in the circumferential direction, the axis direction of the rotating block 273 is parallel to the tangent direction of the edge of the deformation cover 272, four limiting grooves 2322 are formed on the side bottom wall of the inner cavity 23 facing the opening 25, the four limiting grooves 2322 correspond to the four rotating blocks 273 respectively, the rotating block 273 is slidingly connected in the corresponding limiting groove 2322, the sliding direction of the rotating block 273 is perpendicular to the axis direction of the rotating block 273 hinged on the deformation cover 272, and the sliding direction of the plug head 24. A plurality of notches 2721 are formed in the edge of the deformation cover 272, two notches 2721 are formed between each adjacent two rotating blocks 273.

[0047] Referring to Figure 3 When the motor stops working, the plug 271 is driven by the second spring 281 to block the opening 25, the deformation cover 272 abuts against the side bottom wall of the main cavity 232 located at the opening 25 and blocks the opening 25, at this time, the deformation cover 272 is in a normal state and does not have elastic deformation, and the plug 271 and the deformation cover 272 always close the opening 25 in the process that the plug head 24 moves towards the side of the auxiliary cavity 231.

[0048] Referring to Figure 4 , Figure 5 When the motor works, the plug 271 moves to the side of the deformation cover 272 under the action of centrifugal force and overcomes the elastic force of the second spring 281 to protrude from the center of the deformation cover 272 to the side of the plug head 24, at this time, the deformation cover deforms elastically, and the lubricating oil in the inner cavity 23 can flow to the opening 25 through the notches 2721. When the second spring 281 is damaged, the deformation cover 272 can also play a certain role, that is, the opening 25 is automatically controlled by the elastic deformation of the deformation cover 272. At the same time, in the process of oil injection, the center of the deformation cover 272 protrudes to the side of the plug head 24, the side surface of the deformation cover 272 on the side of the plug head 24 is arc-shaped, and the lubricating oil in the main cavity 232 can flow to the opening 25 through the notches 2721 along the arc surface.

[0049] The implementation principle of the special explosion-proof motor in the embodiment of the application is that an operator opens the plug 271 to add lubricating oil into the oil storage cavity 161, the oil injection device 2 injects lubricating oil into the bearing 13 every time the motor starts, and the oil injection device 2 absorbs new lubricating oil to be used for oil injection the next time the motor starts.

[0050] The above are preferred embodiments of the application, which do not limit the protection scope of the application, so that: any equivalent changes made on the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A special explosion-proof motor, characterized by: The motor comprises a housing (1), a rotating shaft (12) installed in the housing (1), two oil injection devices (2), and two bearings (13) installed at both ends of the rotating shaft (12). Two oil injection grooves (14) are provided in the housing (1), the two oil injection grooves (14) respectively correspond to the two bearings (13) and are in communication with the corresponding bearings (13). The two oil injection devices (2) respectively correspond to the two oil injection grooves (14). Each time the motor runs once, the oil injection device (2) automatically injects oil into the corresponding oil injection groove (14). The oil injection device (2) comprises a driving member (21), a plug (24) and an oil injection block (22) with an inner cavity (23); an annular groove (17) is provided on the housing (1); a fixed ring (19) is coaxially sleeved and fixed on the rotating shaft (12); the fixed ring (19) is rotatably connected in the annular groove (17); the oil injection block (22) is embedded in and fixed on the fixed ring (19); the plug (24) is slidably connected to the inner cavity (23) and divides the inner cavity (23) into mutually separated parts. A main cavity (232) and a secondary cavity (231) are not connected. An opening (25) is provided on the bottom wall of the main cavity (232) away from the secondary cavity (231). A control member (27) is provided on the opening (25). The control member (27) is used to control the opening and closing of the opening (25). A connecting passage (26) is provided on the fixing ring (19) to connect the opening (25) and the oil filling groove (14). The driving member (21) drives the plug (24) to slide on the inner cavity (23). The top of the housing (1) is provided with an oil storage tank (16) with an oil storage cavity (161), an annular transition cavity (18) is provided in the housing (1), a first channel (181) is provided on the housing (1) for connecting the oil storage tank (16) and the annular transition cavity (18), the lubricating oil in the oil storage cavity (161) automatically fills the annular transition cavity (18) through the first channel (181), and a communication port (2323) (2321) communicating with the annular transition cavity (18) is provided on the inner wall of the main cavity (232). ), a one-way valve is provided on the communicating port (2323) (2321), and the one-way valve only allows the lubricating oil in the annular transition chamber (18) to flow to the main chamber (232). When the motor is started, the driving member (21) drives the plug (24) to slide toward the side of the main chamber (232), and the control member (27) controls the opening (25) to open. When the motor is turned off, the driving member (21) drives the plug (24) to slide toward the side of the secondary chamber (231), and the control member (27) controls the opening (25) to close.

2. A special explosion-proof motor according to claim 1, characterized in that: The connecting channel (26) is arranged in a curved manner, and one end of the connecting channel (26) communicating with the oil filling groove (14) is arranged toward and facing the corresponding bearing (13).

3. The special explosion-proof motor according to claim 1, characterized in that: The driving member 1 (21) includes a reset member (215), a movable rod (211), a gear (213) and a push rod (212), wherein the push rod (212) is fixed on the plug head (24), and the gear (213) is rotatably connected to the fixed ring (19), and the movement direction of the push rod (212) is perpendicular to the axial direction of the rotating shaft (12). The movable rod (211) is slidably connected to the fixed ring (19) along a direction parallel to the movement direction of the push rod (212). The gear (213) is located between the push rod (212) and the movable rod (211) and is meshedly connected to the push rod (212) and the movable rod (211). When the rotating shaft (12) rotates, the movable rod (211) is rotated. 211) moves toward the side away from the rotating shaft (12) under the action of centrifugal force, and the plug (24) moves toward the side of the inner cavity (23) to squeeze out the lubricating oil. When the rotating shaft (12) stops rotating, the reset member (215) drives the plug (24) to move toward the side of the auxiliary cavity (231).

4. The special explosion-proof motor according to claim 3, characterized in that: The reset member (215) includes a first spring (2151). When the rotating shaft (12) stops rotating, the first spring (2151) is connected to the plug (24) and drives the plug (24) to overcome the influence of the movable rod (211) and move toward the side of the auxiliary cavity (231).

5. The special explosion-proof motor according to claim 1, characterized in that: The control member (27) comprises a second spring (281), a deformation cover (272) and a plug (271) matched with the opening (25); the deformation cover (272) is fixed on the plug (271); the second spring (281) connects the plug (271) and the oil injection block (22) and drives the plug (271) to block the opening (25); when the motor stops running, the second spring (281) drives the plug (271) to block the opening (25); the deformation cover (272) abuts against the bottom wall of the main cavity (232) on one side of the opening (25) and blocks the opening (25); when the motor is working, the plug (271) and the deformation cover (272) move toward one side of the main cavity (232) under the action of centrifugal force until the opening (25) is connected to the main cavity (232).

6. A special explosion-proof motor according to claim 5, characterized in that: The plug (271) is fixed at the center of the deformation cover (272), and the deformation cover (272) is elastically deformable. The edge of the deformation cover (272) is hinged with multiple rotating blocks (273) in sequence along the circumferential direction. The rotating blocks (273) are slidably connected to the bottom wall of the inner cavity (23) on the side of the opening (25) along a sliding direction perpendicular to the sliding direction of the plug (24). The edge of the deformation cover (272) is provided with multiple notches (2721). When the motor is working, the plug (271) moves toward the side of the deformation cover (272) until the center of the deformation cover (272) bulges toward the side of the plug (24) and generates elastic deformation, and the lubricating oil flows to the opening (25) through the notches (2721).

7. The special explosion-proof motor according to claim 5, characterized in that: The opening (25) is arranged in a conical shape, and the opening (25) gradually shrinks from an end close to the main cavity (232) to an end away from the main cavity (232).

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