Motor shaft structure

Abstract

The utility model discloses a motor shaft structure which comprises a rotating shaft, the output end of the rotating shaft is provided with an oil filling port, the bottom of the oil filling port is provided with an oil storage cavity, the peripheral side of the rotating shaft is provided with an oil outlet, the oil storage cavity is communicated with the outer side of the rotating shaft through the oil outlet, and the oil outlet corresponds to a bearing. The device has the effect of improving the working efficiency of injecting lubricating oil into the bearing.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a motor shaft structure. Background Art

[0002] A motor is a device that converts electrical energy into mechanical energy. It uses an energized coil to generate a rotating magnetic field and acts on the rotor to form a magneto-electrodynamic rotating torque. The motor includes a stator, a rotor, a winding, a bearing, an end cover, etc. The rotor includes a rotating shaft and an iron core, etc. The rotating shaft is rotatably connected to the bearing. Under long-term operation of the motor, the lubricating oil in the bearing will age, reducing the service life of the motor, thereby requiring the lubricating oil in the bearing to be replaced. However, the bearing is located in the motor housing and is inconvenient to disassemble, which reduces the efficiency of injecting the lubricating oil into the bearing. Utility Model Content

[0003] The purpose of the utility model is to provide a motor shaft structure in view of the defects and shortcomings of the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] It includes a rotating shaft, an oil filling port is provided at the output end of the rotating shaft, an oil storage cavity is provided at the bottom of the oil filling port, an oil outlet is provided on the peripheral side of the rotating shaft, the oil outlet connects the oil storage cavity with the outer side of the rotating shaft, and the oil outlet corresponds to the bearing.

[0006] Preferably, the diameter of the oil storage chamber gradually increases from one end close to the oil filling port to the other end, and the oil outlet is located at one end of the oil storage chamber at the oil filling port.

[0007] Preferably, an extension groove is provided on the side wall of the rotating shaft, one end of the extension groove is connected to the outer end of the oil outlet, and the placement direction of the extension groove is consistent with the length direction of the rotating shaft.

[0008] Preferably, a rubber cover is provided at the output end of the rotating shaft, an insertion column is provided at the inner end of the rubber cover, and the insertion column is plugged and fixed in the oil storage cavity.

[0009] Preferably, the insertion column is composed of a connecting rod and a clamping block, one end of the connecting rod is arranged on the side wall of the rubber cover, one end of the clamping block is arranged on the end of the connecting rod away from the rubber cover, the connecting rod is inserted into the oil filling port, and the clamping block is clamped and fixed in the oil storage cavity.

[0010] Preferably, two disassembly grooves are evenly arranged on the circumference of the rubber cover.

[0011] Preferably, there are a plurality of oil outlets, and the plurality of oil outlets are evenly opened in the peripheral side wall of the rotating shaft.

[0012] In summary, the present application includes at least one of the following beneficial technical effects:

[0013] 1. After installing the rotating shaft, inject lubricating oil into the oil filling port, and then the lubricating oil flows out from the oil outlet through the oil storage cavity and flows into the bearing, so that the lubricating oil in the bearing remains lubricated. After that, when the motor works for a long time, repeat the above process and inject new lubricating oil into the bearing. Without disassembling the motor, the lubricating oil flows into the bearing, which improves the working efficiency of injecting lubricating oil into the bearing;

[0014] 2. The diameter of the oil storage chamber gradually increases from one end close to the oil filling port to the other end. When the shaft rotates, under the action of centrifugal force, the lubricating oil in the oil storage chamber flows to the end of the oil storage chamber away from the oil filling port, and then flows out from the oil outlet. When the bearing is placed horizontally, the lubricating oil in the oil storage chamber flows into the bearing, making it convenient for the lubricating oil to flow into the bearing;

[0015] 3. The lubricating oil is injected into the oil storage cavity through the oil filling port, and the insertion column of the rubber cover is inserted into the oil filling port to prevent the lubricating oil from flowing out of the oil filling port. Since the insertion column is composed of a connecting rod and a clamping block, the rubber cover will not be detached from one end of the rotating shaft under the clamping fixation of the clamping block, thereby improving the stability of the rubber cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the rotating shaft of the utility model;

[0017] Figure 2 It is a cross-sectional schematic diagram of the rotating shaft of the utility model.

[0018] In the figure: 1. rotating shaft; 2. oil filling port; 3. oil storage chamber; 4. oil outlet; 5. extension groove; 6. rubber cover; 7. insertion column; 8. connecting rod; 9. clamping block; 10. disassembly groove. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings.

[0020] An embodiment of the present application discloses a motor shaft structure.

[0021] Reference Figure 1 and Figure 2 , including a rotating shaft 1, an oil filling port 2 is provided at the output end of the rotating shaft 1, an oil storage chamber 3 is provided at the bottom of the oil filling port 2, a plurality of oil outlets 4 are uniformly provided around the circumference of the rotating shaft 1, the oil outlets 4 connect the oil storage chamber 3 with the outside, and the oil filling port 2 and the oil storage chamber 3 are coaxially arranged with the rotating shaft 1. After the rotating shaft 1 is installed, lubricating oil is injected into the oil filling port 2, and then the lubricating oil flows out of the oil outlet 4 through the oil storage chamber 3 and flows into the bearing, so that the lubricating oil in the bearing remains lubricated.

[0022] The diameter of the oil storage chamber 3 gradually increases from one end close to the oil filling port 2 to the other end, and a plurality of oil outlets 4 are located at the end of the oil storage chamber 3 away from the oil filling port 2. When the motor is in a horizontal position, the lubricating oil is injected into the oil storage chamber 3 through the oil filling port 2. Since the oil storage chamber 3 is in an inclined state, the lubricating oil is located in the oil storage chamber 3 and will not flow out of the oil storage chamber 3. When the shaft 1 rotates, under the action of centrifugal force, the lubricating oil in the oil storage chamber 3 flows to the end of the oil storage chamber 3 away from the oil filling port 2, and then flows out from the oil outlet 4. When the bearing is in a horizontal position, the lubricating oil in the oil storage chamber 3 flows out from the oil outlet 4.

[0023] A plurality of extension grooves 5 are evenly formed in the circumferential direction of the side wall of the rotating shaft 1, and the plurality of extension grooves 5 correspond to the plurality of oil outlets 4 one by one, one end of the extension groove 5 is connected to the outer end of the oil outlet 4, and the placement direction of the extension groove 5 is consistent with the length direction of the rotating shaft 1. The lubricating oil flows out from the oil outlet 4, and then the lubricating oil is distributed in an increased area under the action of the extension groove 5.

[0024] The output end cover of the rotating shaft 1 is provided with a rubber cover 6, and the inner end of the rubber cover 6 is integrally provided with an insertion column 7, and the insertion column 7 is inserted into the oil filling port 2. Under the action of the rubber cover 6, the lubricating oil will not flow out from the oil filling port 2.

[0025] The insertion column 7 is composed of a connecting rod 8 and a clamping block 9. One end of the connecting rod 8 is integrally arranged on the side wall of the rubber cover 6. One end of the clamping block 9 is integrally arranged on the end of the connecting rod 8 away from the rubber cover 6. The connecting rod 8 is cylindrical, and the clamping block 9 is truncated. The connecting rod 8 is inserted and slidably moved in the oil filling port 2, and the clamping block 9 is clamped and fixed in the oil storage chamber 3. Under the clamping and fixing of the clamping block 9, the rubber cover 6 will not be separated from one end of the rotating shaft 1.

[0026] The rubber cover 6 has two evenly spaced disassembly grooves 10 on the outer circumference near one end of the rotating shaft 1. When the rubber cover 6 needs to be disassembled, two fingers are inserted into the two disassembly grooves 10 respectively, and then the insertion column 7 of the rubber cover 6 is conveniently pulled out from the oil filling port 2 of the rotating shaft 1, so that the rubber cover 6 is disassembled from one end of the rotating shaft 1.

[0027] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A motor shaft structure, comprising a rotating shaft (1), characterized in that: An oil filling port (2) is provided at the output end of the rotating shaft (1), an oil storage chamber (3) is provided at the bottom of the oil filling port (2), an oil outlet (4) is provided on the circumference of the rotating shaft (1), the oil outlet (4) connects the oil storage chamber (3) with the outside of the rotating shaft (1), and the oil outlet (4) corresponds to the bearing.

2. A motor shaft structure according to claim 1, characterized in that: The diameter of the oil storage chamber (3) gradually increases from one end close to the oil filling port (2) to the other end, and the oil outlet (4) is located at one end of the oil storage chamber (3) at the oil filling port (2).

3. A motor shaft structure according to claim 1, characterized in that: An extension groove (5) is provided on the side wall of the rotating shaft (1), one end of the extension groove (5) is connected to the outer end of the oil outlet (4), and the placement direction of the extension groove (5) is consistent with the length direction of the rotating shaft (1).

4. A motor shaft structure according to claim 1, characterized in that: The output end of the rotating shaft (1) is provided with a rubber cover (6), the inner end of the rubber cover (6) is provided with an insertion column (7), and the insertion column (7) is plugged and fixed in the oil storage cavity (3).

5. A motor shaft structure according to claim 4, characterized in that: The insertion column (7) is composed of a connecting rod (8) and a clamping block (9), one end of the connecting rod (8) is arranged on the side wall of the rubber cover (6), and one end of the clamping block (9) is arranged on the end of the connecting rod (8) away from the rubber cover (6), the connecting rod (8) is inserted into the oil filling port (2), and the clamping block (9) is clamped and fixed in the oil storage chamber (3).

6. A motor shaft structure according to claim 4, characterized in that: Two disassembly grooves (10) are evenly arranged on the circumference of the rubber cover (6).

7. The motor shaft structure according to claim 1, characterized in that The oil outlets (4) are multiple, and the multiple oil outlets (4) are evenly arranged in the peripheral side wall of the rotating shaft (1).

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