Multi-stage anti-leakage sealing structure of embedded end cover of speed reducer

Abstract

The application relates to the technical field of speed reducers, and discloses a multi-stage anti-leakage sealing structure of an embedded end cover of a speed reducer, which comprises a main body bearing assembly used for supporting and fixing, a sealing sleeve two is arranged in the main body bearing assembly, an oil liquid conveying assembly used for conveying lubricating oil is arranged at the upper end of the main body bearing assembly, a filtering assembly used for filtering the lubricating oil is integrated in the oil liquid conveying assembly, the filtered lubricating oil is conveyed to a connecting pipe of an oil liquid anti-backflow assembly, when a pipe plug in the oil liquid conveying assembly is inserted into the connecting pipe, a plug block is clamped into a sliding block clamping groove, the pipe plug is inserted downwards to drive the sliding block to move downwards and compress a cylindrical spiral spring one, the sliding block moves downwards through a traction rod to pull a sealing plate, the connecting pipe channel is opened, after the pipe plug is completely inserted, the sealing plate enters an oil collecting groove, notches are formed at the upper end of both sides, the lubricating oil enters the speed reducer after entering the oil collecting groove through the notches, when oil supply is stopped or the pipe plug is pulled out, the spring elastic force pushes the sliding block to move upwards, the sealing plate closes the connecting pipe, and the lubricating oil is prevented from leaking outwards.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of speed reducers, in particular to a multi-stage anti-seepage sealing structure of an embedded end cover of a speed reducer. BACKGROUND

[0002] As core transmission equipment in the industrial field, speed reducers are widely used in key scenes such as mechanical manufacturing, metallurgy and mining. With the accelerated industrial construction, the operation intensity of equipment is continuously improved, and the industry puts forward higher standards for the comprehensive performance of speed reducers. The reliability of sealing has become a key indicator affecting the stable operation of equipment, especially in the fields of metallurgy and mining.

[0003] When the speed reducer is stopped or tilted, the internal lubricating oil will flow out in the reverse direction through the oil inlet structure, causing the oil level to drop sharply. When started again, the lubrication of components such as gears and bearings will be directly affected due to lack of oil. The connection part between the end cover and the body has a matching gap, and the lubricating oil will continuously leak along the gap, causing oil waste and pollution of the surrounding environment. More seriously, the vibration and temperature change during the operation of the speed reducer will continuously expand the gap between the components, and the leakage amount will increase sharply with the operation time, eventually leading to a serious lack of internal oil level. When the gear shaft and bearing rotate further, the sealing gap will become larger, and the lubricating oil will be sprayed in large quantities from the rotating part, exhausting the internal oil in a short time. After the oil leaks, the gears and bearings will immediately enter a dry friction state, which will cause the tooth surface to crack and the bearing to sinter within a few minutes, forcing the equipment to stop urgently. When maintaining, the entire transmission components need to be replaced, which is very costly. Therefore, we propose a multi-stage anti-seepage sealing structure of an embedded end cover of a speed reducer. SUMMARY

[0004] The purpose of the present application is to provide a multi-stage anti-seepage sealing structure of an embedded end cover of a speed reducer to solve the problems raised in the background.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a multi-stage anti-seepage sealing structure of an embedded end cover of a speed reducer, comprising a main body bearing assembly for supporting and fixing, a sealing sleeve two is arranged inside the main body bearing assembly, an oil delivery assembly for delivering lubricating oil is arranged at the upper end of the main body bearing assembly, a filter assembly for filtering lubricating oil is integrated in the oil delivery assembly, an oil anti-seepage assembly for blocking the seepage of lubricating oil is installed at the upper end of the sealing sleeve two, an anti-blocking sealing assembly and an emergency sealing assembly for strengthening the sealing and anti-seepage performance are arranged inside the sealing sleeve two, and the emergency sealing assembly is arranged on the other side of the sealing sleeve two inside and corresponds to the anti-blocking sealing assembly.

[0006] The main body bearing assembly comprises a box seat, a box cover is fixedly installed at the upper end of the box seat, a gear groove is formed in the box seat, a large gear is rotatably connected to one side in the gear groove, a small gear is rotatably connected to one side of the large gear, the large gear and the small gear are engaged, a gear shaft is rotatably connected to one side of the large gear close to the box seat, flange end covers are fixedly connected to the two sides of the large gear and the small gear, sealing sleeves one are fixedly connected to one side of the two groups of flange end covers close to one side of the large gear and the small gear, and sealing sleeves two are fixedly connected to one side of the two groups of sealing sleeves one close to one side of the flange end covers.

[0007] Preferably, the oil liquid conveying assembly comprises a mounting seat, the mounting seat is fixedly installed on one side of the upper end of the box seat, an oil plug is arranged at the middle of the upper end of the mounting seat, an inclined oil guide pipe is fixedly connected to the lower end of the oil plug close to the bottom surface of the mounting seat, a flow distribution disc is fixedly connected to the lower end of the inclined oil guide pipe, a plurality of flow distribution pipes are annularly arranged on the outer diameter of the flow distribution disc, the flow distribution pipes are provided in four groups, a guide pipe is fixedly connected to the lower end of each of the four groups of flow distribution pipes, a cannula is fixedly connected to the lower end of each of the four groups of guide pipes, and an insertion block is fixedly installed on both sides of the lower end of each of the four groups of cannulas.

[0008] Preferably, the filter assembly comprises a motor, the motor is arranged at the lower end of the flow distribution disc, a driving gear is rotatably connected to the lower end of the motor close to the flow distribution disc, a driven gear is rotatably connected to each of the four ends of the outer side of the driving gear close to the connection positions of the flow distribution pipes and the guide pipes, and the driving gear and the driven gears are engaged.

[0009] Preferably, a filter box is fixedly connected to the lower end of each of the four groups of driven gears close to the flow distribution pipes, a filter screen is fixedly installed on the inner wall of each of the four groups of filter boxes, a snap ring is fixedly connected to the upper end of each of the four groups of driven gears, the outer diameter of each of the four groups of snap rings is matched with the inner diameter of each of the four groups of filter boxes, a cleaning brush is fixedly installed on one side of the upper end of each of the four groups of snap rings, each of the four groups of cleaning brushes is in contact with the filter screen, and a guide cone is fixedly connected to the upper end of each of the four groups of driven gears close to the guide pipes.

[0010] Preferably, the oil liquid anti-leakage assembly comprises a connecting pipe, the connecting pipe is fixedly connected to the upper end of the sealing sleeve two, the connecting pipes are provided in four groups, the positions of the connecting pipes correspond to the positions of the cannulas, positioning blocks are fixedly installed on the inner wall of the upper end of each of the four groups of connecting pipes, limit plates are fixedly installed on the lower end of each of the four groups of positioning blocks, and a sliding groove is formed in the inner side of each of the four groups of limit plates.

[0011] Preferably, the four groups of sliding blocks are movably arranged on the upper end of the sliding groove, the four groups of sliding blocks are internally provided with clamping grooves, the four groups of clamping grooves are matched with the insertion blocks, the four groups of sliding blocks are fixedly connected with cylindrical spiral springs one at the lower end close to the lower end of the sliding groove, the cylindrical spiral springs one are made of oil-resistant alloy material, the four groups of sliding blocks are fixedly connected with traction rods at the lower end of one side, the four groups of traction rods are fixedly connected with blocking plates at the lower end, and the connecting pipe is internally provided with an oil collecting groove close to the upper end of the inner wall of the sealing sleeve two.

[0012] Preferably, the anti-blocking sealing assembly comprises an annular connecting plug ring, the annular connecting plug ring is fixedly connected to one side of the flange end cover close to one side of the inner wall of the sealing sleeve two, the outer wall of the annular connecting plug ring is provided with an O-shaped sealing ring one in the middle, the outer wall of one end of the annular connecting plug ring is provided with an O-shaped sealing ring two close to one side of the O-shaped sealing ring one, the annular connecting plug ring is fixedly connected with an annular connecting plug ring at one end, the outer wall of the annular connecting plug ring is provided with a cylindrical spiral spring two, and the annular connecting plug ring is fixedly installed with a baffle one close to the inner wall of the sealing sleeve two on both sides.

[0013] Preferably, the emergency sealing assembly comprises a steel ball, the steel ball is arranged on the inner diameter side wall of the sealing sleeve one, the steel ball is provided with a plurality of steel balls, the lower end of the steel ball is rotatably connected with a bearing one close to one end of the gear shaft, the outer diameter of the bearing one is provided with a locking groove seat, the locking groove seat is matched with the plurality of steel balls, the bearing one is rotatably connected with a bearing two close to the edge of the sealing sleeve one at one end, and the bearing two is fixedly installed with a baffle two close to the lower end of the sealing sleeve on both sides of the outer diameter.

[0014] Preferably, the two baffles two are fixedly installed with a contact plate close to the outer diameter of the bearing two in the middle, the contact plate is provided with a main air bag close to the edge of the sealing sleeve one on one side, the main air bag is fixedly connected with an air pipe at the upper end on one side, the air pipe is provided with a lateral air bag close to the other side of the contact plate on one side, and the bearing two is provided with an O-shaped sealing ring three close to the edge of the sealing sleeve one on one side of the outer diameter.

[0015] Compared with the prior art, the beneficial effects of the present application are:

[0016] The application transports the filtered lubricating oil to the connecting pipe of the oil liquid anti-backflow assembly through the oil liquid conveying assembly. When the spigot of the oil liquid conveying assembly is inserted into the connecting pipe, the plug is clamped into the sliding block clamping groove, the sliding block is driven downward by the spigot and the cylindrical spiral spring I is compressed, the sliding block is pulled downward by the traction rod to move the sealing plate downward, the connecting pipe channel is opened, after the spigot is completely inserted, the sealing plate enters the oil collecting groove, the upper end of the two sides forms a notch, the lubricating oil enters the oil collecting groove through the notch and then enters the speed reducer, when the oil supply is stopped or the spigot is pulled out, the spring elastic force pushes the sliding block upward, the sealing plate closes the connecting pipe, prevents the lubricating oil from leaking, the oil collecting groove can also collect a small amount of leaked oil, and the annular connecting ring is inserted into the sealing sleeve II, the O-shaped sealing ring I and the O-shaped sealing ring II are tightly attached to the sealing surface under the pre-tightening force of the cylindrical spiral spring II, and the oil leakage is blocked by elastic deformation, the spring continuously provides pre-tightening force, and the elastic compensation can also be achieved when the displacement is small. The baffle I 506 limits the position of the spring to ensure sealing. The O-shaped sealing ring III provides basic sealing under normal circumstances. The gear shaft and the bearing rotate and are affected by vibration and temperature, and the sealing gap is easy to change. When the bearing II rotates to move the abutting plate to generate a gap, the abutting plate touches the main or side air bag, the gas in the air bag is introduced into the other air bag through the air pipe to make it expand, and the gap between the sealing sleeve I and the bearing is filled. The steel ball cooperates with the locking groove seat to stabilize the position of the bearing, and emergency sealing is achieved to prevent oil leakage. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Closed three-dimensional structure diagram of multi-stage anti-leakage sealing structure of embedded end cover of speed reducer;

[0018] Figure 2 Semi-closed three-dimensional structure diagram of multi-stage anti-leakage sealing structure of embedded end cover of speed reducer;

[0019] Figure 3 Overall front view disassembly three-dimensional structure diagram of multi-stage anti-leakage sealing structure of embedded end cover of speed reducer;

[0020] Figure 4 Overall left view disassembly three-dimensional structure diagram of multi-stage anti-leakage sealing structure of embedded end cover of speed reducer;

[0021] Figure 5 Three-dimensional structure diagram of oil liquid conveying assembly;

[0022] Figure 6 Three-dimensional structure diagram of filter assembly;

[0023] Figure 7 Disassembly three-dimensional structure diagram of filter assembly;

[0024] Figure 8 Three-dimensional structure diagram of gear shaft;

[0025] Figure 9 Sectional three-dimensional structure diagram of oil liquid anti-flow assembly;

[0026] Figure 10 is a sectional view of the sealing sleeve one and the sealing sleeve two;

[0027] Figure 11 is a sectional view of the anti-blocking sealing assembly;

[0028] Figure 12 is a sectional view of the emergency sealing assembly;

[0029] In the figure: 1, main body bearing assembly; 101, box seat; 102, box cover; 103, large gear; 104, small gear; 105, gear shaft; 106, flange end cover; 107, sealing sleeve one; 108, sealing sleeve two; 2, oil delivery assembly; 201, mounting seat; 202, oil plug; 203, inclined oil guide pipe; 204, flow distribution disc; 205, flow distribution pipe; 206, flow guide pipe; 207, cannula; 208, plug block; 3, filter assembly; 301, motor; 302, driving tooth; 303, driven tooth; 304, filter box; 305, filter screen; 306, snap ring; 307, cleaning brush; 308, flow guide cone; 4, oil anti-leakage assembly; 401, connecting pipe; 402, positioning block; 403, limiting plate; 404, sliding block; 405, cylindrical helical spring one; 406, traction rod; 407, plugging plate; 408, oil collecting groove; 5, anti-blocking sealing assembly; 501, annular connecting plug ring; 502, O-shaped sealing ring one; 503, O-shaped sealing ring two; 504, annular connecting plug ring; 505, cylindrical helical spring two; 506, baffle one; 6, emergency sealing assembly; 601, steel ball; 602, bearing one; 603, locking groove seat; 604, bearing two; 605, baffle two; 606, abutment plate; 607, main direction air bag; 608, air pipe; 609, side direction air bag; 6010, O-shaped sealing ring three. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application 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 part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0031] Please refer to Figures 1-12As shown, the present application provides a technical solution: the multi-stage anti-leakage sealing structure of the embedded end cover of the speed reducer, comprising a main body bearing assembly 1 for supporting and fixing, a sealing sleeve two 108 is arranged inside the main body bearing assembly 1, an oil delivery assembly 2 for delivering lubricating oil is arranged at the upper end of the main body bearing assembly 1, a filter assembly 3 for filtering lubricating oil is integrated in the oil delivery assembly 2, an oil anti-leakage assembly 4 for blocking the leakage of lubricating oil is installed at the upper end of the sealing sleeve two 108, an anti-blocking sealing assembly 5 and an emergency sealing assembly 6 for strengthening the sealing and anti-leakage performance are arranged inside the sealing sleeve two 108, and the emergency sealing assembly 6 is arranged on the other side of the sealing sleeve two 108 and corresponds to the anti-blocking sealing assembly 5;

[0032] The main body bearing assembly 1 comprises a box seat 101, a box cover 102 is fixedly installed at the upper end of the box seat 101, a gear groove is formed in the inside of the box seat 101, a large gear 103 is rotatably connected to one side of the inside of the gear groove, a small gear 104 is rotatably connected to one side of the large gear 103, the large gear 103 and the small gear 104 are engaged, a gear shaft 105 is rotatably connected to the inside of the large gear 103 close to the box seat 101, flange end covers 106 are fixedly connected to both sides of the large gear 103 and the small gear 104, sealing sleeves one 107 are fixedly connected to one side of the flange end covers 106 close to one side of the large gear 103 and the small gear 104, and sealing sleeves two 108 are fixedly connected to one side of the sealing sleeves one 107 close to one side of the flange end covers 106;

[0033] Further, the oil delivery assembly 2 delivers lubricating oil to the inside of the speed reducer, during the delivery, the filter assembly 3 filters the lubricating oil, the clean lubricating oil after removing impurities reaches the inside of the speed reducer, the main body bearing assembly 1 supports and fixes each component, guarantees stable lubrication and transmission, the sealing sleeve two 108 cooperates with the oil anti-leakage assembly 4 to avoid backflow and outward leakage of the lubricating oil during the delivery and lubrication, the anti-blocking sealing assembly 5 continuously plays a conventional sealing role to seal one end of the fixed part inside the speed reducer, at the same time, the emergency sealing assembly 6 enhances the sealing of the rotating part inside the speed reducer to further prevent the leakage of the lubricating oil, through the synergistic effect of the anti-blocking sealing assembly 5 and the emergency sealing assembly 6, the multi-stage anti-leakage sealing of the speed reducer is realized, and the normal operation and lubrication effect of the speed reducer are guaranteed;

[0034] The box seat 101 and the box cover 102 jointly constitute the housing of the speed reducer, forming a closed space for accommodating components such as gears, power is transmitted to the bull gear 103 through the gear shaft 105, when the bull gear 103 rotates, it will drive the pinion 104 to rotate due to the engagement of the bull gear 103 with the pinion 104, thereby achieving power transmission and speed reduction, in this process, the flange end cover 106 is installed on both sides of the bull gear 103 and the pinion 104, and the sealing sleeve one 107 and the sealing sleeve two 108 are sealed by the flange end cover 106 to seal the gap between the bull gear 103, the pinion 104, the flange end cover 106 and the gear shaft 105, prevent internal lubricating oil from leaking out, and prevent external impurities from entering, ensure the stable operation of the gears and other components in a good lubricating environment, and realize the speed reduction and power transmission function of the speed reducer.

[0035] In the preferred technical solution of the present embodiment, please refer to Figure 5 、 Figure 6 、 Figure 7 As shown in the drawings, the oil delivery assembly 2 comprises a mounting seat 201 fixedly installed on one side of the upper end of the box seat 101, an oil plug 202 is arranged at the middle of the upper end of the mounting seat 201, an inclined oil guide pipe 203 is fixedly connected to the lower end of the oil plug 202 close to the bottom surface of the mounting seat 201, a flow distribution disc 204 is fixedly connected to the lower end of the inclined oil guide pipe 203, a plurality of flow distribution pipes 205 are annularly arranged on the outer diameter of the flow distribution disc 204, the four groups of flow distribution pipes 205 are fixedly connected with a plurality of flow guide pipes 206 at the lower ends thereof, the four groups of flow guide pipes 206 are fixedly connected with a plurality of insertion pipes 207 at the lower ends thereof, a plurality of insertion blocks 208 are fixedly installed on both sides of the lower ends of the four groups of insertion pipes 207, the filter assembly 3 comprises a motor 301 arranged at the lower end of the flow distribution disc 204, a driving gear 302 is rotatably connected to the lower end of the flow distribution disc 204 at the driving end of the motor 301, a plurality of driven gears 303 are rotatably connected to the four ends of the outer side of the driving gear 302 close to the connection positions of the flow distribution pipes 205 and the flow guide pipes 206, the driving gear 302 is engaged with the driven gears 303, a plurality of filter boxes 304 are fixedly connected to the four groups of driven gears 303 at the upper ends thereof close to the lower ends of the flow distribution pipes 205, a plurality of filter screens 305 are fixedly installed on the inner walls of the four groups of filter boxes 304, a plurality of snap rings 306 are fixedly connected to the inner upper ends of the four groups of driven gears 303, the outer diameters of the four groups of snap rings 306 are matched with the inner diameters of the four groups of filter boxes 304, a plurality of cleaning brushes 307 are fixedly installed on one side of the upper ends of the four groups of snap rings 306, the four groups of cleaning brushes 307 are in contact with the filter screens 305, and a plurality of flow guide cones 308 are fixedly connected to the four groups of driven gears 303 at the lower ends thereof close to the upper ends of the flow guide pipes 206.

[0036] Further, by opening the oil plug 202 and injecting lubricating oil, the lubricating oil flows into the distribution disc 204 through the inclined oil guide pipe 203, and then is uniformly distributed to the four groups of distribution pipes 205. At this time, the lubricating oil in the distribution pipes 205 enters the filter box 304 of the filter assembly 3, and is filtered by the filter screen 305. At the same time, the motor 301 is started and drives the driving teeth 302 to rotate, which drives the four groups of driven teeth 303 to rotate synchronously. When the driven teeth 303 rotate, they drive the snap ring 306 and the cleaning brush 307 to rotate together. The cleaning brush 307 is in continuous contact with the filter screen 305 during rotation, and can remove impurities attached to the filter screen 305 in real time, effectively preventing the filter screen 305 from being blocked. The clean lubricating oil filtered by the filter screen 305 is guided into the flow guide pipe 206 through the flow guide cone 308, and finally enters the connecting pipe 401 of the oil leakage prevention assembly 4 through the cannula 207.

[0037] In the preferred technical solution of the present embodiment, referring to Figures 9-11 As shown in the figure, the oil leakage prevention assembly 4 includes a connecting pipe 401 fixedly connected to the upper end of the sealing sleeve two 108. The connecting pipe 401 is provided with four groups, and the four groups of connecting pipes 401 correspond in position to the cannulas 207. The inner wall of each of the four groups of connecting pipes 401 is fixedly installed with a positioning block 402 on the upper end of both sides. The lower end of each of the four groups of positioning blocks 402 is fixedly installed with a limiting plate 403. The inner side of each of the four groups of limiting plates 403 is provided with a sliding groove. The inner side of each of the four groups of sliding blocks 404 is provided with a clamping groove. The four groups of clamping grooves are matched with the insertion blocks 208. The lower end of each of the four groups of sliding blocks 404 is fixedly connected with a cylindrical spiral spring one 405 near the lower end of the inner side of the sliding groove. The cylindrical spiral spring one 405 is made of oil-resistant alloy material. The lower end of each of the four groups of sliding blocks 404 is fixedly connected with a traction rod 406 on one side. The lower end of each of the four groups of traction rods 406 is fixedly connected with a blocking plate 407. The lower end of the connecting pipe 401 is provided with an oil collecting groove 408 near the inner wall of the sealing sleeve two 108.

[0038] Further, when the cannula 207 is inserted into the connecting pipe 401, the insertion block 208 is clamped into the clamping groove of the sliding block 404. When the cannula 207 is continuously inserted, the sliding block 404 is moved downward along the sliding groove, so that the cylindrical spiral spring one 405 is compressed. At the same time, the sliding block 404 pulls the blocking plate 407 downward through the traction rod 406, and opens the channel of the connecting pipe 401. After the cannula 207 is completely inserted, the blocking plate 407 enters the oil collecting groove 408, and the upper end of both sides forms a notch. The lubricating oil flows into the oil collecting groove 408 through the notch, and finally enters the inside of the speed reducer. When it is necessary to stop oil supply or pull out the cannula 207, the elastic force of the cylindrical spiral spring one 405 pushes the sliding block 404 to move upward. The sliding block 404 drives the blocking plate 407 to move upward through the traction rod 406, and closes the channel of the connecting pipe 401, preventing the lubricating oil in the speed reducer from leaking. Therefore, the lubricating oil in the oil collecting groove 408 is prevented from leaking, and the risk of leakage is further strengthened.

[0039] In the preferred technical solution of the embodiment, referring to Figure 11 As shown, the anti-blocking sealing assembly 5 comprises an annular connecting ring 501 fixedly connected to one side of the flange end cover 106 near the inner wall of the sealing sleeve two 108, an O-shaped sealing ring one 502 sleeved on the outer wall of the middle part of the annular connecting ring 501, an O-shaped sealing ring two 503 sleeved on the outer wall of one end of the annular connecting ring 501 near the O-shaped sealing ring one 502, a ring-shaped connecting blocking ring 504 fixedly connected to one end of the annular connecting ring 501, a cylindrical spiral spring two 505 sleeved on the outer wall of the ring-shaped connecting blocking ring 504, and a baffle one 506 fixedly installed on both sides of the ring-shaped connecting blocking ring 504 near the inner wall of the sealing sleeve two 108.

[0040] Further, the annular connecting ring 501 is inserted into the corresponding position in the sealing sleeve two 108, the O-shaped sealing ring one 502 and the O-shaped sealing ring two 503 are tightly attached to the sealing surface between the annular connecting ring 501 and the inner wall of the sealing sleeve two 108 under the elastic pre-tightening force of the cylindrical spiral spring two 505, when the lubricating oil in the reducer contacts the sealing surface, the O-shaped sealing ring one 502 and the O-shaped sealing ring two 503 fill the gap by their own elastic deformation to prevent the lubricating oil from leaking, the cylindrical spiral spring two 505 continuously provides pre-tightening force for the anti-blocking sealing assembly 5 to ensure that the O-shaped sealing ring always maintains a good sealing state, even when there is a slight relative displacement between the annular connecting ring 501 and the sealing sleeve two 108, the sealing effect can be maintained through the elasticity compensation of the spring, the baffle one 506 limits the position of the cylindrical spiral spring two 505 to ensure its stable work, thereby, the sealing of the key parts inside the reducer is realized through the anti-blocking sealing assembly 5 to prevent the lubricating oil from leaking.

[0041] In the preferred technical solution of the embodiment, referring to Figure 12As shown, the emergency sealing assembly 6 comprises steel balls 601 arranged on the inner diameter side wall of the sealing sleeve one 107, the steel balls 601 are arranged in plurality, the lower end of the steel balls 601 is rotatably connected with a bearing one 602 at one end of the gear shaft 105, the outer diameter of the bearing one 602 is provided with a locking groove seat 603, the locking groove seat 603 is matched with the plurality of steel balls 601, one end of the bearing one 602 is rotatably connected with a bearing two 604 at the edge of the sealing sleeve one 107, the outer diameter of the bearing two 604 is fixedly installed with baffle plates two 605 at the lower end of the sealing sleeve one 107, the baffle plates two 605 are fixedly installed with a contact plate 606 at the outer diameter of the bearing two 604, the contact plate 606 is provided with a main gas bag 607 at one side of the edge of the sealing sleeve one 107, the main gas bag 607 is fixedly connected with an air pipe 608 at one side of the upper end, the air pipe 608 is provided with a side gas bag 609 at one side of the other side of the contact plate 606, the outer diameter of the bearing two 604 is sleeved with an O-shaped sealing ring three 6010 at the edge of the sealing sleeve one 107;

[0042] Further, the O-shaped sealing ring three 6010 undertakes the basic sealing task to avoid leakage of lubricating oil when the speed reducer is normally operated, however, when the gear shaft 105 and the bearing one 602 and the bearing two 604 continuously rotate, in addition to the influence of factors such as vibration and temperature change, the matching gap between the sealing components is easy to change, when the bearing two 604 rotates and the contact plate 606 moves left and right driven by vibration, a gap is generated, the contact plate 606 will touch the main gas bag 607 or the side gas bag 609, at this time, the gas in the touched gas bag will enter the other gas bag through the air pipe 608, so that the main gas bag 607 or the side gas bag 609 inflates and expands, the expanded gas bag can fill the gap between the sealing sleeve one 107 and the bearing, at the same time, the steel balls 601 and the locking groove seat 603 cooperate with each other to ensure the position stability of the bearing one 602 and other components, the reliable emergency sealing is realized by the action of the gas bag, the leakage of lubricating oil is prevented, and the normal operation of the speed reducer is ensured, so that the multi-stage anti-leakage sealing effect is realized.

[0043] It should be noted that, in the present document, the terms such as first and second, etc. are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0044] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A multi-stage anti-leakage sealing structure of an embedded end cover of a speed reducer, comprising a main body bearing assembly (1) for supporting and fixing, characterized in that: The main body bearing assembly (1) is internally provided with a sealing sleeve two (108), the upper end of the main body bearing assembly (1) is provided with an oil conveying assembly (2) for conveying lubricating oil, the oil conveying assembly (2) is integrated with a filtering assembly (3) for filtering lubricating oil, the upper end of the sealing sleeve two (108) is provided with an oil anti-seepage assembly (4) for blocking the seepage of lubricating oil, the sealing sleeve two (108) is internally provided with an anti-blocking sealing assembly (5) and an emergency sealing assembly (6) for strengthening the sealing and anti-seepage performance, and the emergency sealing assembly (6) is located on the other side of the sealing sleeve two (108) and is correspondingly arranged with the anti-blocking sealing assembly (5); The main body bearing assembly (1) comprises a box seat (101), the upper end of the box seat (101) is fixedly provided with a box cover (102), the inside of the box seat (101) is provided with a gear groove, one side of the gear groove is rotatably connected with a large gear (103), one side of the large gear (103) is rotatably connected with a small gear (104), the large gear (103) and the small gear (104) are engaged, the inside of the large gear (103) is rotatably connected with a gear shaft (105) close to one side of the box seat (101), both sides of the large gear (103) and the small gear (104) are fixedly connected with flange end covers (106), one side of the two groups of flange end covers (106) is fixedly connected with sealing sleeves one (107) close to one side of the large gear (103) and the small gear (104), one side of the two groups of sealing sleeves one (107) is fixedly connected with sealing sleeves two (108) close to one side of the flange end cover (106).

2. The multi-stage leakage-proof sealing structure of the embedded end cover of the speed reducer according to claim 1, characterized in that: The oil conveying assembly (2) comprises a mounting seat (201), the mounting seat (201) is fixedly installed on one side of the upper end of the box seat (101), the upper end of the mounting seat (201) is provided with an oil plug (202), the lower end of the oil plug (202) is fixedly connected with an inclined oil guide pipe (203) close to the bottom surface of the mounting seat (201), the lower end of the inclined oil guide pipe (203) is fixedly connected with a flow distribution disc (204), the outer diameter of the flow distribution disc (204) is annularly arranged with flow distribution pipes (205), the flow distribution pipes (205) are provided with four groups, the lower end of each of the four groups of flow distribution pipes (205) is fixedly connected with a flow guide pipe (206), the lower end of each of the four groups of flow guide pipes (206) is fixedly connected with a cannula (207), and the lower end of each of the four groups of cannulas (207) is fixedly installed with an insertion block (208).

3. The multi-stage leakage-proof sealing structure of the embedded end cover of the speed reducer according to claim 1, characterized in that: The filtering assembly (3) comprises a motor (301), the motor (301) is arranged at the lower end of the flow distribution disc (204), the driving end of the motor (301) is rotatably connected with a driving tooth (302) close to the lower end of the flow distribution disc (204), the outer side of the driving tooth (302) is rotatably connected with a driven tooth (303) close to the connection of the flow distribution pipe (205) and the flow guide pipe (206) at four ends, and the driving tooth (302) and the driven tooth (303) are engaged.

4. The multi-stage leakage-proof sealing structure of the embedded end cover of the speed reducer according to claim 3, characterized in that: Four groups of the driven tooth (303) upper end near the lower end of the flow divider (205) are fixedly connected with filter boxes (304), the inner wall of four groups of the filter boxes (304) is fixedly installed with filter screens (305), four groups of the driven tooth (303) inside the upper end is fixedly connected with the snap ring (306), the outer diameter of four groups of the snap ring (306) and the inner diameter of four groups of the filter box (304) are matched, four groups of the snap ring (306) upper end one side is fixedly installed with cleaning brush (307), four groups of the cleaning brush (307) and filter screen (305) are in contact, four groups of the driven tooth (303) lower end near the upper end of the flow guide pipe (206) is fixedly connected with the flow guide cone (308).

5. The multi-stage leakage-proof sealing structure of the embedded end cover of the speed reducer according to claim 1, characterized in that: The oil leakage prevention assembly (4) includes a connecting pipe (401), the connecting pipe (401) is fixedly connected to the upper end of the sealing sleeve two (108), the connecting pipe (401) is provided with four groups, four groups of the connecting pipe (401) and the position corresponding to the cannula (207), the inner wall of four groups of the connecting pipe (401) is fixedly installed with a positioning block (402) on both sides of the upper end, four groups of the positioning block (402) is fixedly installed with a limiting plate (403) at the lower end, four groups of the limiting plate (403) is provided with a sliding groove on the inner side, four groups of the sliding groove is movably installed with a sliding block (404) at the upper end, four groups of the sliding block (404) is provided with a clamping groove on the inner side, four groups of the clamping groove and the plug-in block (208) are matched, four groups of the sliding block (404) is fixedly connected with a cylindrical spiral spring one (405) near the lower end of the sliding groove, the cylindrical spiral spring one (405) is made of oil-resistant alloy material, four groups of the sliding block (404) is fixedly connected with a traction rod (406) at the lower end of one side, four groups of the traction rod (406) is fixedly connected with a blocking plate (407) at the lower end, the connecting pipe (401) is provided with an oil collecting groove (408) near the inner wall of the sealing sleeve two (108) at the lower end.

6. The multi-stage leakage-proof sealing structure of the embedded end cover of the speed reducer according to claim 5, characterized in that: The anti-blocking sealing assembly (5) includes an annular connecting plug ring (501), the annular connecting plug ring (501) is fixedly connected to one side of the flange end cover (106) near the inner wall of the sealing sleeve two (108), the outer wall of the annular connecting plug ring (501) is sleeved with an O-shaped sealing ring one (502) in the middle, the outer wall of the annular connecting plug ring (501) is sleeved with an O-shaped sealing ring two (503) on one side near the O-shaped sealing ring one (502), the annular connecting plug ring (504) is fixedly connected with an annular connecting plug ring (504) on one end, the outer wall of the annular connecting plug ring (504) is sleeved with a cylindrical spiral spring two (505), the annular connecting plug ring (504) is fixedly installed with a baffle one (506) on both sides near the inner wall of the sealing sleeve two (108).

7. The multi-stage leakage-proof sealing structure of the reducer embedded end cover according to claim 1, characterized in that: ​ 8. The multi-stage leakage-proof sealing structure of the embedded end cover of the speed reducer according to claim 1, characterized in that: The emergency sealing assembly (6) comprises steel balls (601), the steel balls (601) are arranged on the inner diameter side wall of the sealing sleeve one (107), the steel balls (601) are provided with a plurality of steel balls (601), the lower end of the steel ball (601) is rotatably connected with a bearing one (602) near one end of the gear shaft (105), a locking groove seat (603) is formed on the outer diameter of the bearing one (602), the locking groove seat (603) is matched with the steel balls (601), and the one end of the bearing one (602) is rotatably connected with a bearing two (604) near the edge of the sealing sleeve one (107); the outer diameter of the bearing two (604) is fixedly installed with a baffle two (605) near the lower end of the sealing sleeve one (107).

9. The multi-stage leakage-proof sealing structure of the embedded end cover of the speed reducer according to claim 8, characterized in that: Two baffle two (605) intermediate fixedly installed with a contact plate (606) near the outer diameter of the bearing two (604), the contact plate (606) one side near the edge of the sealing sleeve one (107) is provided with a main gas bag (607), the main gas bag (607) one side upper end fixedly connected with a gas pipe (608), the gas pipe (608) one side near the contact plate (606) the other side is provided with a lateral gas bag (609), the outer diameter of the bearing two (604) is sleeved with an O-shaped sealing ring three (6010) near the edge of the sealing sleeve one (107).

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