A vertical motor with a dual oil passage direct connection structure

Abstract

This utility model relates to a vertical motor with a dual-oil-circuit direct-flow structure, comprising: a rotor with a rotating shaft; an extended-end bearing support assembly sleeved on one end of the rotating shaft, which includes a bearing body, an inner bearing cover located inside the bearing body, and an outer bearing cover located outside the bearing body; the inner bearing cover has an inner cover groove, and the outer bearing cover has an outer cover groove, the inner cover groove and the outer cover groove are connected through the gap between the rotating shaft and the bearing body, the outer cover groove is connected to a first oil injection hole, and the inner cover groove is connected to a second oil injection hole, the inlets and outlets of the first oil injection hole and the second oil injection hole are both exposed on the surface of the outer bearing cover; a tail-end bearing support assembly sleeved on the other end of the rotating shaft; and a stator connecting the extended-end bearing support assembly and the tail-end bearing support assembly; the dual oil circuit achieves efficient oil injection and waste oil discharge, avoiding accumulation that leads to lubrication failure; it can also be adapted to two vertical installation methods, has strong versatility, requires no additional power source, reduces energy consumption and cost, and can drain oil without stopping the machine, adapting to continuous operation.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and more particularly to a vertical motor with a dual oil passage direct-through structure. Background Technology

[0002] Industrial motors require their shafts to rotate for extended periods during operation, and their bearings are used for long periods as well. Therefore, bearing lubrication becomes particularly important. Most industrial motor bearings are lubricated with grease, which requires the regular injection of new grease and the removal of waste grease.

[0003] The existing oil injection and drainage methods mainly include the following:

[0004] 1. Passive sealing and leak prevention device: An oil seal, O-ring or labyrinth seal groove is installed between the motor end cover and the shaft, which relies on the deformation of elastic material or the tortuous channel to prevent lubricating oil from leaking out.

[0005] II. Intermittent manual oil draining scheme: By setting radial oil drain holes on the bearing sleeve and leading out an oil drain pipe, waste oil is periodically drained.

[0006] 3. Configure a small gear pump or peristaltic pump, driven by an independent motor, to forcefully extract waste oil from the bearing chamber to an external oil tank.

[0007] However, in practical use, passive sealing only prevents oil leakage and cannot drain the oxidized and deteriorated oil and wear debris mixture from the bearing housing, leading to bearing lubrication failure and increased wear rate. Intermittent manual oil draining requires machine shutdown and cannot handle continuous operation scenarios; manual maintenance is difficult and incomplete, easily resulting in leakage of waste oil, which carbonizes into sludge and blocks the bearing raceway. Active pumping oil draining requires an additional power source, increasing energy consumption; its complex structure and high cost lead to pump failure and interruption of oil draining, reducing system reliability. Moreover, currently, there are two main installation methods for low-speed, high-torque vertical motors. Due to the different directions of gravity, the flow direction of lubricating oil is also different, requiring separate design of bearing housing oil draining circuits for the above solutions, resulting in poor versatility.

[0008] Therefore, it is necessary to develop a vertical motor with a dual oil circuit direct-through structure to solve the above problems. Utility Model Content

[0009] The purpose of this invention is to provide a vertical motor with a dual oil circuit direct-flow structure that has smooth oil circuit and good compatibility.

[0010] To achieve the above objectives, this utility model provides the following technical solution: a vertical motor with a dual oil circuit direct-flow structure, comprising:

[0011] The rotor is equipped with a rotating shaft;

[0012] An extended bearing support assembly is sleeved onto one end of the rotating shaft, and includes a bearing body, an inner bearing cover located inside the bearing body, and an outer bearing cover located outside the bearing body.

[0013] The bearing inner cover has an inner cover groove, and the bearing outer cover has an outer cover groove. The inner cover groove and the outer cover groove are connected through the gap between the rotating shaft and the bearing body. The outer cover groove is connected to a first oil injection hole, and the inner cover groove is connected to a second oil injection hole. The inlets and outlets of the first oil injection hole and the second oil injection hole are both exposed on the surface of the bearing outer cover.

[0014] The tail bearing support assembly is sleeved on the other end of the rotating shaft;

[0015] The stator connects the extension bearing support assembly and the tail bearing support assembly.

[0016] Furthermore, the bearing inner cover includes an inner cover body, an inner cover groove formed by recessing inward from the surface of the inner cover body, and an inner cover clearance hole penetrating the inner cover body, wherein the inner cover clearance hole allows the rotating shaft to pass through.

[0017] Furthermore, the inner cover groove is provided with a first inner cover boss surrounding the inner cover clearance hole, the inner cover body surface forms a step, the step surface is provided with a second inner cover boss, the first inner cover boss surrounds the inner cover clearance hole, and the second inner cover boss surrounds the inner cover groove.

[0018] Furthermore, the bearing outer cover includes an outer cover body, an outer cover groove formed by recessing inward from the surface of the outer cover body, and an outer cover clearance hole penetrating the outer cover body, wherein the outer cover clearance hole allows the rotating shaft to pass through.

[0019] Furthermore, the outer cover groove is provided with a first outer cover boss surrounding the outer cover clearance hole, and the outer cover body surface is provided with a second outer cover boss surrounding the outer cover groove.

[0020] Furthermore, the first oil injection hole penetrates the outer cover body and communicates with the outer cover groove.

[0021] Furthermore, a bearing sleeve is fixedly installed on the outer ring of the bearing body. The bearing sleeve has through holes penetrating its upper and lower surfaces, and the through holes are respectively connected to the second oil injection hole and the inner cover groove.

[0022] Furthermore, the rotating shaft is fitted with an oil baffle ring, which is located in the inner cover groove. The rotating shaft is fitted at its center and extends radially outward. The surface of the oil baffle ring maintains a distance from the surface of the bearing sleeve.

[0023] Furthermore, the bearing inner cover has a communicating groove formed by recessing inward from the surface of the step, the communicating groove being located on one side of the inner cover groove and communicating with the inner cover groove.

[0024] Furthermore, the extension bearing support assembly is equipped with an oil pipe that obliquely penetrates the extension bearing support assembly, with its end extending into the communicating groove.

[0025] Compared to existing technologies, the advantages of this invention are as follows: This invention is a vertical motor with a dual-oil-circuit direct-flow structure, which can achieve efficient oil injection and waste oil discharge through dual oil circuits, avoiding lubrication failure due to sludge accumulation. It is compatible with two vertical installation methods, offering strong versatility. No additional power source is required, reducing energy consumption and costs, and oil can be drained without stopping the machine, adapting to continuous operation. Multiple sealing and flow-guiding designs improve operational stability and reduce maintenance requirements. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0027] Figure 1 This is a three-dimensional structural diagram of a vertical motor with a dual oil circuit direct-through structure according to the present invention;

[0028] Figure 2 for Figure 1 The figure shows a cross-sectional view of a vertical motor with a dual oil passage straight-through structure;

[0029] Figure 3 for Figure 1 A partial structural diagram of the extension bearing support assembly of a vertical motor with a dual oil passage direct-through structure is shown.

[0030] Figure 4 for Figure 1 A partial structural diagram of the tail bearing support assembly of a vertical motor with a dual oil passage direct-through structure is shown.

[0031] Figure 5 for Figure 1 The diagram shows a partial flow structure of a vertical motor with a dual oil passage direct connection.

[0032] Figure 6 for Figure 1 The diagram shows a partial flow structure of a vertical motor with a dual oil passage direct connection.

[0033] In the diagram: 1. Rotor; 11. Shaft; 12. Rotor core; 2. Extended end bearing support assembly; 21. Bearing body; 22. Bearing inner cover; 221. Inner cover body; 222. Inner cover groove; 223. Inner cover clearance hole; 224. Step; 225. First inner cover boss; 226. Second inner cover boss; 227. Connecting groove; 23. Bearing outer cover; 231. Outer cover body; 232. Outer cover groove; 233. Outer cover clearance hole; 234. First outer cover boss; 235. Second outer cover boss; 236. First oil injection hole; 237. Second oil injection hole; 24. Bearing sleeve; 241. Through hole; 3. Tail end bearing support assembly; 31. Tail end bearing; 32. Tail end bearing sleeve; 4. Stator; 41. Housing; 42. Stator core; 43. Stator winding; 5. Oil retaining ring; 6. Oil pipe. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please refer to Figures 1 to 6 This utility model is a vertical motor with a dual oil circuit direct-through structure, which includes a rotor 1, an extension end bearing support assembly 2 sleeved on one end of the rotor 1, a tail end bearing support assembly 3 sleeved on the other end of the rotor 1, and a stator 4 connecting the extension end bearing support assembly 2 and the tail end bearing support assembly 3.

[0036] Please refer to Figures 1 to 2 The rotor 1 includes a shaft 11 and a rotor core 12 fitted onto the shaft 11. The shaft body of the shaft 11 is divided into multiple functional sections, namely a bearing mating section and a core mounting section. The bearing mating section mates with the extended end bearing support assembly 2 and the tail end bearing support assembly 3. The core mounting section fixes the rotor core 12 through keyways or heat-fitting processes to transmit torque. The rotor core 12 adopts a lamination stacking structure, which is stacked axially. After stacking, it is fastened into a whole by fastening with clips, welding, or screws to ensure structural rigidity during high-speed rotation. The outer circumference of the rotor core 12 has slots for embedding rotor bars or winding excitation windings.

[0037] Please refer to Figures 2 to 3 The extended end bearing support assembly 2 includes a bearing body 21, an inner bearing cover 22 located inside the bearing body 21, an outer bearing cover 23 located outside the bearing body 21, and a bearing sleeve 24 fixedly connected to the bearing body 21.

[0038] The bearing body 21 is sleeved on one end of the rotating shaft 11. Its inner ring fits the rotating shaft 11 with an interference fit, and its outer ring is connected to the bearing sleeve 24. The bearing sleeve 24 is fixedly connected to the stator 4.

[0039] The bearing inner cover 22 is installed inside a vertical motor with a dual oil passage direct-through structure. The bearing inner cover 22 includes an inner cover body 221, an inner cover groove 222 recessed inward from the surface of the inner cover body 221, and an inner cover clearance hole 223 penetrating the inner cover body 221. The inner cover body 221 is a cylinder with a step 224 formed on its surface. The step 224 extends radially from the center of the inner cover body 221 along its surface. The inner cover groove 222 is recessed inward from the center of the step 224, and its shape can be changed according to requirements. In this embodiment, the inner cover groove 222 is circular. The inner cover clearance hole 223 penetrates the step 224 and the inner cover body 221 in sequence, allowing the rotating shaft 11 to pass through.

[0040] Specifically, the inner cover groove 222 has a first inner cover boss 225 inside, which surrounds the inner cover clearance hole 223. The step 224 has a second inner cover boss 226 on its surface, which surrounds the inner cover groove 222.

[0041] Furthermore, the bearing inner cover 22 has a communicating groove 227 formed by recessing inward from the surface of the step 224. The communicating groove 227 is located on one side of the inner cover groove 222 and communicates with the inner cover groove 222.

[0042] The bearing inner cover 22 is fixedly connected to the bearing body 21 by bolts or screws, and the upper surface of the step 224 is tightly fitted with the surface of the bearing sleeve 24, so that the inner cover groove 222 and the connecting groove 227 form a cavity.

[0043] Please refer to Figure 2 and Figure 4 The bearing outer cover 23 is installed on the outside of a vertical motor with a dual oil passage direct-through structure. The bearing outer cover 23 includes an outer cover body 231, an outer cover groove 232 formed by recessing inward from the surface of the outer cover body 231, and an outer cover clearance hole 233 penetrating the outer cover body 231. The outer cover body 231 is cylindrical, and the outer cover groove 232 is located at the center of the outer cover groove 232. The shape of the outer cover groove 232 can be changed according to requirements. In this embodiment, the outer cover groove 232 is circular. The outer cover clearance hole 233 penetrates the center of the outer cover body 231 and allows the rotating shaft 11 to pass through.

[0044] Specifically, the outer cover groove 232 is provided with a first outer cover boss 234, which surrounds the outer cover clearance hole 233. The outer cover body 231 is provided with a second outer cover boss 235, which surrounds the outer cover groove 232.

[0045] Furthermore, the bearing outer cover 23 is provided with a first oil injection hole 236 and a second oil injection hole 237, which are arranged opposite to each other, penetrating the outer cover body 231 and communicating with the outer cover groove 232. When the lubricating oil is not changed, the first oil injection hole 236 and the second oil injection hole 237 are sealed with oil plugs. Secondly, the bearing sleeve 24 has a through hole 241 penetrating its upper and lower surfaces, and the two ends of the through hole 241 are respectively connected to the second oil injection hole 237 and the inner cover groove 222 or the connecting groove 227.

[0046] The bearing outer cover 23 is fixedly connected to the bearing body 21 by bolts or screws. The lower surface of the outer cover body 231 is tightly fitted with the surface of the bearing sleeve 24, so that the outer cover groove 232 forms a cavity.

[0047] The tail bearing support assembly 3 includes a tail bearing 31 and a tail bearing sleeve 32. The tail bearing 31 is sleeved on one end of the rotating shaft 11, with its inner ring fitting against the rotating shaft 11 and having an interference fit with the rotating shaft 11. Its outer ring is connected to the tail bearing sleeve 32, and the tail bearing sleeve 32 is fixedly connected to the stator 4.

[0048] Preferably, the rotating shaft 11 is fitted with an oil retaining ring 5, which is located in the inner cover groove 222, with its center fitted into the inner cover groove 222 and extending radially outward. The surface of the oil retaining ring 5 maintains a distance from the surface of the bearing sleeve 24.

[0049] Please refer to Figure 2 The stator 4 includes a housing 41, a stator core 42 installed inside the housing 41, and a stator winding 43 wound around the stator core 42. The two ends of the housing 41 are respectively connected to the extension end bearing support assembly 2 and the tail end bearing support assembly 3. The outer ring of the stator core 42 is fixedly connected to the housing 41, and its inner ring extends radially to the outside of the rotor core 12, corresponding to the rotor core 12.

[0050] Preferably, the present invention is a vertical motor with a dual oil passage direct structure, which is provided with an oil pipe 6. The oil pipe 6 obliquely passes through the bearing sleeve 24 of the extended end bearing support assembly 2, and its end extends into the connecting groove 227.

[0051] This utility model discloses a vertical motor with a dual oil circuit direct-flow structure. There are two usage scenarios: one is with the extended end facing upwards and the tail end facing downwards. When the lubricating oil needs to be changed, new lubricating oil is injected through the first oil injection hole 236, entering the cavity formed by the tightly fitting outer cover 23 and bearing sleeve 24, and the outer cover groove 232. It then seeps into the gap between the bearing body 21 and the rotating shaft 11, is blocked by the oil baffle ring 5, and flows radially into the cavity formed by the tightly fitting inner cover 22 and bearing sleeve 24, and the inner cover groove 222 and connecting groove 227, thus completing the bearing lubrication. When the lubricating oil needs to be discharged, it is discharged through the oil pipe 6.

[0052] Another type is designed with the extended end facing down and the tail end facing up. When the lubricating oil needs to be changed, the new lubricating oil is injected through the second oil injection hole 237, passes through the through hole 241 and enters the cavity formed by the tight fit between the bearing inner cover 22 and the bearing sleeve 24, the inner cover groove 222 and the connecting groove 227, and then seeps into the gap between the bearing body 21 and the rotating shaft 11, and enters the cavity formed by the tight fit between the bearing outer cover 23 and the bearing sleeve 24, the outer cover groove 232, to complete the lubrication of the bearing. When the lubricating oil needs to be discharged, it is discharged through the first oil injection hole 236.

[0053] This utility model relates to a vertical motor with a dual-oil-circuit direct-flow structure. The dual oil circuits enable efficient oil injection and waste oil discharge, preventing oil buildup and lubrication failure. It is compatible with two vertical installation methods, offering strong versatility. No additional power source is required, reducing energy consumption and costs, and oil can be drained without stopping the machine, adapting to continuous operation. Multiple sealing and flow-guiding designs enhance operational stability and reduce maintenance requirements.

[0054] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A vertical motor with a dual-oil-circuit direct-flow structure, characterized in that, include: The rotor (1) is equipped with a rotating shaft (11); The extended end bearing support assembly (2) is sleeved on one end of the rotating shaft (11), and includes a bearing body (21), an inner bearing cover (22) located inside the bearing body (21), and an outer bearing cover (23) located outside the bearing body (21). The bearing inner cover (22) has an inner cover groove (222), and the bearing outer cover (23) has an outer cover groove (232). The inner cover groove (222) and the outer cover groove (232) are connected through the gap between the rotating shaft (11) and the bearing body (21). The outer cover groove (232) is connected to a first oil injection hole (236), and the inner cover groove (222) is connected to a second oil injection hole (237). The inlets and outlets of the first oil injection hole (236) and the second oil injection hole (237) are exposed on the surface of the bearing outer cover (23). The tail bearing support assembly (3) is sleeved on the other end of the rotating shaft (11); The stator (4) connects the extension bearing support assembly (2) and the tail bearing support assembly (3).

2. The vertical motor having a dual-oil passage straight-through structure according to claim 1, characterized by The bearing inner cover (22) includes an inner cover body (221), an inner cover groove (222) formed by recessing inward from the surface of the inner cover body (221), and an inner cover clearance hole (223) penetrating the inner cover body (221), through which the rotating shaft (11) passes.

3. The vertical motor having a dual oil passage straight-through structure according to claim 2, characterized by The inner cover groove (222) is provided with a first inner cover boss (225) surrounding the inner cover clearance hole (223), and a step (224) is formed on the surface of the inner cover body (221). A second inner cover boss (226) is provided on the surface of the step (224). The first inner cover boss (225) surrounds the inner cover clearance hole (223), and the second inner cover boss (226) surrounds the inner cover groove (222).

4. The vertical motor having a dual-oil passage straight-through structure according to claim 1, characterized by The bearing outer cover (23) includes an outer cover body (231), an outer cover groove (232) formed by recessing from the surface of the outer cover body (231) inward, and an outer cover clearance hole (233) penetrating the outer cover body (231), the outer cover clearance hole (233) allowing the rotating shaft (11) to pass through.

5. The vertical motor having a straight-through structure with dual oil paths according to claim 4, characterized by The outer cover groove (232) is provided with a first outer cover boss (234) surrounding the outer cover clearance hole (233), and the outer cover body (231) is provided with a second outer cover boss (235) surrounding the outer cover groove (232).

6. The vertical motor having a straight-through structure with dual oil paths according to claim 5, characterized by The first oil injection hole (236) penetrates the outer cover body (231) and communicates with the outer cover groove (232).

7. The vertical motor having a dual oil passage straight-through structure according to claim 1, characterized by The bearing body (21) has a bearing sleeve (24) fixedly installed on its outer ring. The bearing sleeve (24) has a through hole (241) penetrating its upper and lower surfaces. The through hole (241) is connected to the second oil injection hole (237) and the inner cover groove (222) respectively.

8. The vertical motor having a straight-through structure with dual oil paths according to claim 7, characterized by The rotating shaft (11) is fitted with an oil baffle ring (5), which is located in the inner cover groove (222). The rotating shaft (11) is fitted at its center and extends radially outward. The surface of the oil baffle ring (5) maintains a distance from the surface of the bearing sleeve (24).

9. The vertical motor having a dual oil passage straight-through structure according to claim 3, characterized by The bearing inner cover (22) has a communication groove (227) formed by recessing inwardly from the surface of the step (224), which is located at one side of the inner cover groove (222) and communicates with the inner cover groove (222).

10. The vertical motor having a dual oil passage straight-through structure according to claim 9, characterized by The extension end bearing support assembly (2) is provided with an oil pipe (6) which obliquely penetrates the extension end bearing support assembly (2) and has an end extending into the communication groove (227).

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