CN206211730U - Motor and the mine car with it - Google Patents

Abstract

The utility model discloses a motor and a mining vehicle with the same. The motor comprises: a rotating shaft and a casing. A first oil supply hole, a second oil supply hole and a third oil supply hole are formed on the rotating shaft. The oil supply hole extends along the length direction of the rotating shaft, one end of the second oil supply hole and the third oil supply hole communicate with the first oil supply hole, and the other ends of the second oil supply hole and the third oil supply hole respectively pass through the shaft. The outer peripheral walls of the first end and the second end; the casing is sleeved outside the rotating shaft, and the two ends of the casing are respectively provided with a first bearing chamber for accommodating the first bearing and a second bearing chamber for accommodating the second bearing. A bearing is arranged at the first end of the rotating shaft and a second bearing is arranged at the second end of the rotating shaft. The second oil supply hole communicates with the first bearing chamber and the third oil supply hole communicates with the second bearing chamber. According to the motor of the utility model, the lubricating effect is good, and it also has a cooling effect on the first bearing, the second bearing and the rotating shaft, which reduces the cooling pressure of the motor, thereby improving the performance of the motor.

Description

Motor and mine vehicle with same

technical field

The utility model relates to the technical field of motor manufacturing, in particular to a motor and a mining vehicle with the motor.

Background technique

Patent No. CN201380061457.7 discloses a bearing lubricating oil circuit, which is equipped with a bearing arranged at the center of the bracket and freely rotatably supporting the rotating shaft, and convex ribs are radially arranged on the inner surface of the bracket, and formed The bearing rib is equipped with an oil passage groove for supplying lubricating oil to the bearing, and an upper protruding hole for introducing lubricating oil is formed on the upper part of the bracket. Guided guides function as upper convex ribs.

However, the above-mentioned convex ribs for guiding lubricating oil are poor in manufacturability, and the convex ribs are not easy to process, and the precision is not high, which will affect the flow of lubricating oil, and the processing of the convex ribs will be affected by the thickness of the end, resulting in space insufficient. At the same time, the oil hole on this structure is difficult to process, so the processing cost will be high, and the efficiency is low during the operation of the mechanism.

Utility model content

The utility model aims at at least solving one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a motor, which has a good lubricating effect on the first bearing and the second bearing of the motor.

Another object of the present utility model is to provide a mining vehicle with the above motor.

The motor according to the first aspect of the present invention includes: a rotating shaft, on which a first oil supply hole, at least one second oil supply hole and at least one third oil supply hole are formed, and the first oil supply hole is formed along the The length direction of the rotating shaft extends, one end of the second oil supply hole and one end of the third oil supply hole communicate with the first oil supply hole, and the other end of the second oil supply hole passes through the The outer peripheral wall of the first end of the rotating shaft, the other end of the third oil supply hole penetrates the outer peripheral wall of the second end of the rotating shaft; the casing, the casing is sleeved outside the rotating shaft, and the casing The first bearing chamber for accommodating a first bearing and the second bearing chamber for accommodating a second bearing are respectively provided at both ends of the shaft, the first bearing is arranged at the first end of the rotating shaft, and the first bearing Two bearings are arranged at the second end of the rotating shaft, the second oil supply hole communicates with the first bearing chamber to lubricate the first bearing, and the third oil supply hole communicates with the second The bearing chamber communicates to lubricate the second bearing.

According to the motor of the utility model, the first bearing and the second bearing are lubricated by processing the first oil supply hole, the second oil supply hole and the third oil supply hole on the rotating shaft, the lubrication effect is good, and the The first bearing, the second bearing and the rotating shaft have the function of cooling at the same time, which reduces the cooling pressure of the motor, improves the cooling efficiency, and thus improves the performance of the motor. At the same time, due to the first oil supply hole, the second oil supply hole and the first The processing of the three oil supply holes is not limited by space, which is conducive to process optimization.

According to some embodiments of the present utility model, an oil inlet and an oil outlet are formed on the casing, the oil inlet communicates with the first oil supply hole, and the oil inlet is adjacent to the first bearing set, and the oil outlet is set adjacent to the second bearing.

Optionally, in the radial direction of the rotating shaft, the oil inlet is arranged adjacent to the central axis of the rotating shaft, and the oil outlet is located outside the oil inlet.

Specifically, an oil inlet passage is formed on the casing, and the oil inlet passage includes: a first oil inlet passage, one end of the first oil inlet passage communicates with the oil inlet; a second oil inlet passage, The second oil inlet passage is located on the side of the first bearing adjacent to the center of the rotating shaft, one end of the second oil inlet passage communicates with the other end of the first oil inlet passage, and the second oil inlet passage communicates with the other end of the first oil inlet passage. The other end of the oil channel communicates with the first oil supply hole.

According to some embodiments of the present utility model, the first oil supply hole is formed as a through hole extending in the axial direction of the rotating shaft, and plugs are respectively provided at both ends of the through hole.

According to some embodiments of the present utility model, seals are respectively provided on the sides of the first bearing chamber and the second bearing chamber away from the center of the rotating shaft.

According to some embodiments of the present utility model, there are a plurality of the second oil supply holes and the third oil supply holes respectively, and the plurality of second oil supply holes are evenly spaced along the circumferential direction of the rotating shaft. The third oil supply holes are evenly spaced along the circumference of the rotating shaft.

According to some embodiments of the present utility model, the casing includes: a cylindrical casing body, the casing body is sheathed outside the rotating shaft; a first bearing seat is arranged on the At one end of the casing body, a first bearing cover is provided on the side of the first bearing seat away from the center of the rotating shaft, and the first bearing is defined between the first bearing cover and the first bearing seat chamber; the second bearing seat, the second bearing seat is arranged at the other end of the casing body, the second bearing seat is provided with a second bearing cover on the side away from the center of the rotating shaft, and the second bearing The second bearing chamber is defined between the cover and the second bearing seat.

The mining vehicle according to the second aspect of the utility model includes the motor according to the above-mentioned first aspect of the utility model.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a side view of a motor according to an embodiment of the present invention;

Fig. 2 is a sectional view along line A-A in Fig. 1;

Fig. 3 is another side view of the motor according to the embodiment of the present invention;

Fig. 4 is a schematic diagram of a mining vehicle according to an embodiment of the present invention.

Reference signs:

100: motor;

1: rotating shaft; 11: first oil supply hole; 111: plug;

12: the second oil supply hole; 13: the third oil supply hole;

21: casing body; 211: oil outlet; 212: oil outlet pipe;

22: the first bearing seat; 23: the second bearing seat;

221: the first oil inlet channel; 222: the second oil inlet channel;

223: the first bearing chamber; 231: the second bearing chamber;

24: first bearing cover; 241: oil inlet; 242: oil inlet pipe;

25: second bearing cover, 26: first bearing; 27: second bearing; 28: seal;

200: Mining vehicles.

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Axial", "Radial", "Circumferential" The orientation or positional relationship indicated by ", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, so as to Specific orientation configurations and operations, therefore, should not be construed as limitations on the invention.

In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, a feature defined as "first", "second" and "third" may explicitly or implicitly include one or more of these features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

The following describes a motor 100 according to an embodiment of the present invention with reference to FIGS. 1-3 . The electric machine 100 may be used in a mining vehicle 200 . In the following description of the present application, the motor 100 is used in the mining vehicle 200 as an example for illustration. Of course, those skilled in the art can understand that the motor 100 can also be used in other equipment that needs a motor, not limited to the mining vehicle 200 .

As shown in FIGS. 1-3 , the motor 100 according to the embodiment of the first aspect of the present invention includes a rotating shaft 1 and a housing.

A first oil supply hole 11 , at least one second oil supply hole 12 and at least one third oil supply hole 13 are formed on the rotating shaft 1 , and the first oil supply hole 11 extends along the length direction of the rotating shaft 1 . The first oil supply hole 11 preferably extends along the axial direction of the rotating shaft 1 to facilitate the processing of the first oil supply hole 11 , and the first oil supply hole 11 can be arranged coaxially with the rotating shaft 1 to ensure the smooth rotation of the rotating shaft 1 .

One end (for example, the inner end in FIG. 2 ) of the second oil supply hole 12 and one end (for example, the inner end in FIG. 2 ) of the third oil supply hole 13 are all communicated with the first oil supply hole 11 , and the second oil supply hole 13 is in communication with the first oil supply hole 11 . The other end of the oil hole 12 (for example, the outer end in FIG. 2 ) runs through the outer peripheral wall of the first end (for example, the left end in FIG. 2 ) of the rotating shaft 1, and the other end of the third oil supply hole 13 (for example, the The outer end in ) runs through the peripheral wall of the second end (eg, the right end in FIG. 2 ) of the rotating shaft 1 . Thus, since both the second oil supply hole 12 and the third oil supply hole 13 communicate with the first oil supply hole 11, the lubricating oil in the first oil supply hole 11 can flow to the second oil supply hole 12 and the third oil supply hole respectively. Oil supply hole 13. Here, it should be noted that the direction "inward" can be understood as a direction toward the central axis of the rotating shaft 1, and the opposite direction is defined as "outward". Wherein, the second oil supply hole 12 and the third oil supply hole 13 preferably extend radially of the rotating shaft 1 , so as to simplify the processing technology of the second oil supply hole 12 and the third oil supply hole 13 , improve the processing efficiency and reduce the cost.

The casing is set outside the rotating shaft 1, and the casing is preferably arranged coaxially with the rotating shaft 1. The inner wall of the casing is suitable for fixing a stator, and the outer peripheral wall of the rotating shaft 1 is suitable for fixing a rotor. When the stator is energized, a magnetic field is generated. The rotor will rotate under the action of the magnetic field, thereby driving the rotating shaft 1 to rotate synchronously.

Both ends of the casing are respectively provided with a first bearing chamber 223 for accommodating the first bearing 26 and a second bearing seat chamber 231 for accommodating the second bearing 27, the first bearing 26 is arranged at the above-mentioned first end of the rotating shaft 1, And the second bearing 27 is arranged at the above-mentioned second end of the rotating shaft 1, the second oil supply hole 12 communicates with the first bearing chamber 223 to lubricate the first bearing 26, and the third oil supply hole 13 communicates with the second bearing seat chamber 231 To lubricate the second bearing 27. Thus, the lubricating oil in the first oil supply hole 11 can enter the first bearing chamber 223 and the second bearing seat chamber 231 through the second oil supply hole 12 and the third oil supply hole 13 respectively, so as to respectively The first bearing 26 in the chamber 223 and the second bearing 27 in the second bearing seat chamber 231 are lubricated. At the same time, the lubricating oil also has a cooling effect on the first bearing 26 and the second bearing 27, which can relieve the temperature on the first bearing 26. and the loss of the second bearing 27, thereby prolonging the service life of the first bearing 26 and the second bearing 27, and ensuring the normal operation of the motor 100. Moreover, since the lubricating oil flows through the rotating shaft 1 , it also has a certain cooling effect on the rotating shaft 1 . Because lubricating oil not only has lubricating effect, but also has cooling effect, which reduces the pressure for the cooling system of the motor 100, improves the cooling efficiency, thereby improves the performance of the motor 100, and, because the first oil supply hole 11, the second oil supply hole Both the oil hole 12 and the third oil supply hole 13 are arranged on the rotating shaft 1. Compared with the traditional method of machining convex ribs on the bracket, they will not be limited by space, which is conducive to process optimization. In addition, the first bearing 26 and the second bearing 27 are lubricated by processing the first oil supply hole 11, the second oil supply hole 12 and the third oil supply hole 13 on the rotating shaft 1, so that the larger spacing can be adjusted. The two bearings (such as the first bearing 26 and the second bearing 27 ) are lubricated, and at the same time can also have a certain cooling effect, which is beneficial to the working condition of heavy load and improves the performance of the motor 100 .

According to the motor 100 of the embodiment of the present utility model, the first bearing 26 and the second bearing 27 are adjusted by processing the first oil supply hole 11, the second oil supply hole 12 and the third oil supply hole 13 on the rotating shaft 1. Lubricate, the lubricating effect is good, and it has cooling effect on the first bearing 26, the second bearing 27 and the rotating shaft 1 at the same time, reduces the cooling pressure of the motor 100, improves the cooling efficiency, thereby improves the performance of the motor 100, at the same time, Since the processing of the first oil supply hole 11 , the second oil supply hole 12 and the third oil supply hole 13 is not limited by space, it is beneficial to process optimization.

According to some embodiments of the present utility model, as shown in FIG. Lubricating oil can flow into the first oil supply hole 11, and flow through the first oil supply hole 11 to the first bearing chamber 223 and the second bearing housing chamber 231 through the second oil supply hole 12 and the third oil supply hole 13 respectively, so as to Lubrication and cooling of the first bearing 26 and the second bearing 27 are achieved, after which the lubricating oil flows out from the oil outlet 211 . Wherein, the oil inlet 241 is arranged adjacent to the first bearing 26 , and the oil outlet 211 is arranged adjacent to the second bearing 27 , thereby effectively ensuring that the lubricating oil can lubricate and cool both the first bearing 26 and the second bearing 27 .

Optionally, as shown in Figure 2, in the radial direction of the rotating shaft 1, the oil inlet 241 is arranged adjacent to the central axis of the rotating shaft 1, so that the oil supply pressure can be effectively reduced, so that the lubricating oil can smoothly flow to the first bearing 26 and The second bearing 27 is lubricated and cooled, and the oil outlet 211 is located on the outside of the oil inlet 241 (that is, the side away from the central axis of the rotating shaft 1), so that the lubricating oil can fully carry out the first bearing 26 and the second bearing 27. Lubrication and cooling, thus further improving the lubrication and cooling effect.

Specifically, referring to FIG. 2, an oil inlet passage is formed on the casing, and the oil inlet passage includes: a first oil inlet passage 221 and a second oil inlet passage 222, and one end of the first oil inlet passage 221 (for example, in FIG. 2 left end) communicates with the oil inlet 241, the second oil inlet passage 222 is located on the side near the center of the rotating shaft 1 of the first bearing 26, and one end of the second oil inlet passage 222 (for example, the lower end in Fig. 2 ) is connected to the first The other end (for example, the right end among Fig. 2) of oil inlet passage 221 communicates, and the other end (for example, upper end among Fig. 2) of the second oil inlet passage 222 communicates with first oil supply hole 11, thus from oil inlet The lubricating oil flowing in from 241 can enter the second oil inlet passage 222 through the first oil inlet passage 221, and then enter the first oil supply hole 11 of the rotating shaft 1. Therefore, by setting the oil inlet passage on the casing, it can be smoothly realized. Oil is supplied to the first oil supply hole 11, and the structure of the oil inlet channel is simple and easy to implement. Wherein, the first oil inlet passage 221 preferably extends along the length direction of the rotating shaft 1, and the second oil inlet passage 222 preferably extends along the radial direction of the rotating shaft 1, so as to simplify the processing technology of the first oil inlet passage 221 and the second oil inlet passage 222 .

According to some optional embodiments of the present utility model, as shown in Figure 2, the first oil supply hole 11 can be formed as a through hole extending in the axial direction of the rotating shaft 1, and the two ends of the through hole respectively pass through the axial direction of the rotating shaft 1. The two end faces of the first oil supply hole 11 are thus greatly simplified, and the two ends of the through hole are respectively provided with plugs 111, and the plugs 111 respectively play a role in sealing the two ends of the through hole. In order to prevent the lubricating oil in the first oil supply hole 11 from flowing out through the end of the rotating shaft 1 .

According to some embodiments of the present utility model, the first bearing chamber 223 and the second bearing chamber 231 are provided with seals 28 on the sides away from the center of the rotating shaft 1 respectively. At this time, the first bearing chamber 223 and the second bearing chamber 231 The outer end of the housing is sealed by the seal 28, so that the lubricating oil entering the casing is not easy to leak out through the outer ends of the first bearing chamber 223 and the second bearing seat chamber 231, so that the lubricating oil can better protect the first bearing 26 and the second bearing 27 are lubricated and cooled to ensure the lubricated and cooled effects. For example, as shown in FIG. 2 , a sealing member 28 can be provided between the housing and the rotating shaft 1 to seal the gap between the housing and the rotating shaft 1 , thus the sealing effect is good and easy to implement. Wherein, the seal 28 may be an oil seal, but is not limited thereto.

According to some optional embodiments of the present utility model, the second oil supply hole 12 and the third oil supply hole 13 can be respectively plural, the plurality of second oil supply holes 12 are evenly spaced along the circumference of the rotating shaft 1, and the plurality of The third oil supply holes 13 are evenly spaced along the circumference of the rotating shaft 1, so that the lubricating oil in the first oil supply holes 11 can enter evenly through a plurality of second oil supply holes 12 and a plurality of third oil supply holes 13 respectively. into the first bearing chamber 223 and the second bearing seat chamber 231 to evenly lubricate and cool the first bearing 26 and the second bearing 27, thereby ensuring the circumferential direction of the first bearing 26 and the second bearing 27 The uniformity of lubrication and the consistency of temperature at each position of the It can be understood that the number and specific arrangement of the second oil supply hole 12 and the third oil supply hole 13 can be specifically set according to the actual lubrication and cooling conditions of the first bearing 26 and the second bearing 27, so as to better meet actual requirements.

Optionally, the first oil supply hole 11 may be a circular hole with a diameter of 20 mm, and the second oil supply hole 12 and the third oil supply hole 13 may be circular holes with a diameter of 5 mm respectively, but they are not limited thereto. Of course, the first oil supply hole 11, the second oil supply hole 12 and the third oil supply hole 13 can also be oval holes, oblong holes or polygonal holes, etc., the first oil supply hole 11, the second oil supply hole The specific size of 12 and the third oil supply hole 13 can also be specifically set according to actual requirements, so as to have better lubricating and cooling effects.

According to some specific embodiments of the present invention, as shown in FIG. 2 , the casing includes: a cylindrical casing body 21 , a first bearing seat 22 and a second bearing seat 23 , and the casing body 21 is sleeved on the outside of the rotating shaft 1 , the first bearing seat 22 is arranged at one end of the casing body 21 (for example, the left end in Fig. 2 ), and the side of the first bearing seat 22 away from the center of the rotating shaft 1 is provided with a first bearing cover 24, and the first bearing cover 24 A first bearing chamber 223 is defined between the first bearing seat 22, the first bearing 26 is arranged in the first bearing chamber 223 and is located on the radial inner side of the first bearing seat 22, and the second bearing seat 23 is arranged on the casing body The other end of 21 (for example, the right end in Fig. 2), the side of the second bearing seat 23 away from the center of the rotating shaft 1 is provided with a second bearing seat cover 25, and the second bearing seat cover 25 is defined between the second bearing seat 23. Out of the second bearing seat chamber 231 , the second bearing 27 is disposed in the second bearing seat chamber 231 and is located at the radial inner side of the second bearing seat 23 .

Thus, by adopting a casing composed of multiple parts (including the casing, the first bearing seat 22, the first bearing cover 24, the second bearing seat 23 and the second bearing seat cover 25), the processing of the casing is simplified. process, and the above-mentioned parts of the casing can be connected by threaded fasteners such as screws or interference fit, and the connection is firm and convenient.

Wherein, referring to FIG. 2 and in combination with FIG. 3 , the oil inlet 241 can be formed on the first bearing cover 24, and the oil inlet 241 can be located directly below the rotating shaft 1, and the oil inlet channel is formed on the first bearing seat 22, and An oil inlet pipe 242 may be provided at the oil port 241 so as to supply oil to the first oil supply hole 11. Specifically, one end of the oil inlet pipe 242 may pass through the oil inlet 241 and extend into the first oil inlet of the oil inlet passage. In the passage 221, further, the oil inlet pipe 242 can pass through the first bearing chamber 223, so as to reduce the distance between the oil inlet pipe 242 and the first oil supply hole 11, and further reduce the oil supply pressure.

The oil outlet 211 can be arranged on the end of the casing body 21 away from the first bearing 26 (for example, the right end in FIG. 2 ), and the oil outlet 211 communicates with the accommodation chamber defined between the casing body 21 and the rotating shaft 1 , The oil outlet 211 is preferably located at the bottom of the casing, so that all the lubricating oil in the accommodating chamber can flow out through the oil outlet 211, so as to ensure the lubricity and cooling effect of the lubricating oil. Wherein, the size of the oil outlet 211 can be set larger to further ensure the oil outlet effect. Further, an oil outlet pipe 212 may be provided at the oil outlet 211 so as to discharge lubricating oil out of the casing.

The utility model is based on the design of the pure oil cooling motor 100, and the design of the entire lubricating oil circuit is established based on the rotating shaft 1. Specifically, the entire lubricating oil circuit starts from the oil inlet pipe 242, and the lubricating oil enters the first oil supply hole 11 of the rotating shaft 1 through the oil inlet pipe 242 through the oil inlet passage, and then enters the first bearing cover 24 and the second oil supply hole 12 through the second oil supply hole 12. The first bearing chamber 223 defined between the bearing housings 22 remains in the first bearing chamber 223. Due to the presence of a seal 28 such as an oil seal at the outermost end, the lubricating oil can only flow toward the motor 100 along the axial direction. The internal flow must pass through the first bearing 26 during the inward flow, so that the first bearing 26 is lubricated, but the dynamic sealing ring between the first bearing seat 22 and the rotating shaft 1, such as a labyrinth seal 28, makes the lubrication Oil can no longer enter the rotor core of the rotor axially inward, thus, the first oil supply hole 11 and the third oil supply hole 13 on the rotating shaft 1 become the only flow paths for lubricating oil, and the first oil supply hole 13 of the rotating shaft 1 The oil hole 11 is a through hole that runs through the axial ends of the rotating shaft 1, but since both ends are provided with plugs 111, the lubricating oil will not flow out through the two ends of the rotating shaft 1, but through the third supply on the rotating shaft 1. The oil hole 13 flows into the second bearing seat chamber 231 to lubricate the second bearing 27. There is also a seal 28 such as an oil seal at the outermost end of the second bearing 27 to stop the outflow of lubricating oil. Thus, the lubricating oil can only It flows into the motor 100 through a bearing such as the second bearing 27 , and then flows out through the oil outlet pipe 212 . Wherein, lubricating oil can be circulated and then enter the motor 100 to lubricate and cool the first bearing 26 and the second bearing 27 .

According to the motor 100 of the embodiment of the present utility model, the processing of the entire lubricating oil circuit is simple, so that the processing accuracy can be improved, thereby effectively ensuring the flow of the lubricating oil, and reducing the processing cost.

As shown in FIG. 4 , the mining vehicle 200 according to the embodiment of the second aspect of the utility model includes the motor 100 according to the embodiment of the first aspect of the utility model.

According to the mining vehicle 200 of the embodiment of the present invention, the overall performance of the mining vehicle 200 is improved by using the above-mentioned motor 100 .

Other configurations and operations of the mining vehicle 200 according to the embodiment of the present utility model are known to those skilled in the art, and will not be described in detail here.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" is intended to mean that the implementation Specific features, structures, materials or characteristics described in an embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications, the scope of the present invention is defined by the claims and their equivalents.

Claims (9)

1. A motor, characterized in that, comprising: A rotating shaft, on which a first oil supply hole, at least one second oil supply hole and at least one third oil supply hole are formed, the first oil supply hole extends along the length direction of the rotating shaft, and the second oil supply hole One end of the oil supply hole and one end of the third oil supply hole are both in communication with the first oil supply hole, and the other end of the second oil supply hole passes through the outer peripheral wall of the first end of the rotating shaft. The other end of the third oil supply hole passes through the outer peripheral wall of the second end of the rotating shaft; A casing, the casing is sleeved on the outside of the rotating shaft, and the two ends of the casing are respectively provided with a first bearing chamber for accommodating the first bearing and a second bearing chamber for accommodating the second bearing, the The first bearing is arranged at the first end of the rotating shaft, and the second bearing is arranged at the second end of the rotating shaft, and the second oil supply hole communicates with the first bearing chamber for lubrication The first bearing, and the third oil supply hole communicates with the second bearing chamber to lubricate the second bearing. 2. The motor according to claim 1, wherein an oil inlet and an oil outlet are formed on the casing, the oil inlet communicates with the first oil supply hole, and the oil inlet It is arranged adjacent to the first bearing, and the oil outlet is arranged adjacent to the second bearing. 3. The motor according to claim 2, characterized in that, in the radial direction of the rotating shaft, the oil inlet is arranged adjacent to the central axis of the rotating shaft, and the oil outlet is located outside the oil inlet . 4. The motor according to claim 2, wherein an oil inlet passage is formed on the casing, and the oil inlet passage includes: a first oil inlet passage, one end of the first oil inlet passage communicates with the oil inlet; A second oil inlet passage, the second oil inlet passage is located on a side of the first bearing adjacent to the center of the rotating shaft, one end of the second oil inlet passage communicates with the other end of the first oil inlet passage , the other end of the second oil inlet passage communicates with the first oil supply hole. 5 . The motor according to claim 1 , wherein the first oil supply hole is formed as a through hole extending in the axial direction of the rotating shaft, and plugs are respectively provided at both ends of the through hole. 6 . The motor according to claim 1 , wherein seals are respectively provided on sides of the first bearing chamber and the second bearing chamber away from the center of the rotating shaft. 7 . 7. The motor according to claim 1, wherein there are a plurality of the second oil supply hole and the third oil supply hole respectively, and a plurality of the second oil supply holes are arranged along the circumference of the rotating shaft. The plurality of third oil supply holes are evenly spaced along the circumference of the rotating shaft. 8. The motor according to any one of claims 1-7, wherein the casing comprises: a cylindrical casing body, the casing body is sheathed on the outside of the rotating shaft; The first bearing seat, the first bearing seat is arranged at one end of the casing body, the side of the first bearing seat away from the center of the rotating shaft is provided with a first bearing cover, and the first bearing cover is connected to the first bearing cover. The first bearing chamber is defined between the first bearing seats; The second bearing seat, the second bearing seat is arranged at the other end of the casing body, the side of the second bearing seat away from the center of the rotating shaft is provided with a second bearing cover, and the second bearing cover and The second bearing chamber is defined between the second bearing seats. 9. A mining vehicle, characterized in that it comprises the motor according to any one of claims 1-8.