Novel rolling bearing oil injection structure

Abstract

The utility model discloses a novel rolling bearing oil injection structure which comprises a rolling bearing and is characterized by further comprising an oil injection structure, a bearing oil injection hole is formed in the upper surface of the rolling bearing shell, the oil injection structure comprises an oil pipe, a connector and a straight-through type oil cup, the bottom end of the oil pipe is inserted into the bearing oil injection hole, the oil pipe vertically and upwards penetrates through a sliding ring cover connected outside the rolling bearing in a sleeving mode, and the straight-through type oil cup is arranged at the top end of the oil pipe. The motor rolling bearing oiling device can realize convenient and efficient motor rolling bearing oiling operation.

Description

Technical Field

[0001] The utility model relates to an oil injection structure for rolling bearings in the field of motor structure design. Background Art

[0002] In many water conservancy projects using horizontal synchronous motors, in order to reduce the size of the motor body and the cost of the motor, slip rings and brush holders are usually placed at the tail end of the shaft, and a slip ring cover is provided as external protection, and the excitation leads are led out from the bottom of the slip ring cover. Since the dust pollution in the pump station is small and the motor is usually arranged in the pump house, the protection level of the motor body is IP44, while the protection level of the slip ring is IP21 or IP23. The axial load of the water conservancy project is relatively small, and rolling bearings are used, which can generally reduce the size of the motor and facilitate later maintenance.

[0003] Please refer to Figure 1 . For such a brush-type synchronous motor with end-cover type rolling bearings, for electrical safety considerations, the slip ring cover 1 of the slip ring and brush holder cannot be easily opened. When designing, the slip ring cover 1 is bolted to the end cover 2. When it is necessary to grease the rolling bearing 3, the slip ring cover 1 needs to be removed. However, since the excitation leads 4 enter and exit from the bottom of the slip ring cover, it is inconvenient to remove the slip ring cover, making the process of greasing the bearing cumbersome. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a new type of oil injection structure for rolling bearings, which can realize convenient and efficient oil injection operation for motor rolling bearings.

[0005] A technical solution to achieve the above purpose is: a new type of oil injection structure for rolling bearings, including a rolling bearing, and also including an oil injection structure; an oil injection hole for the bearing is opened on the upper surface of the rolling bearing housing, the oil injection structure includes an oil pipe, a joint and a straight-through oil cup, the bottom end of the oil pipe is inserted into the oil injection hole for the bearing, the oil pipe vertically passes upward through the slip ring cover sleeved outside the rolling bearing, and the straight-through oil cup is arranged at the top end of the oil pipe.

[0006] Further, the straight-through oil cup is detachably connected to the oil pipe through the joint.

[0007] Further, the slip ring cover is connected to the end cover of the motor through a circular ring on the end cover, a through hole is opened at the top of the circular ring on the end cover, and the oil pipe vertically passes upward through the circular ring on the end cover.

[0008] Further, a base for inserting the oil pipe is arranged on the oil injection hole for the bearing, and a sealing structure is arranged on the base.

[0009] A new grease injection structure for a rolling bearing of the present utility model can achieve grease injection without removing the slip ring cover, facilitating the later maintenance of users, improving the efficiency of the grease injection operation. At the same time, during the operation, there is no need to disassemble and assemble the slip ring cover, enhancing the reliability of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 FIG. 6 is a schematic structural diagram of an end - cover type rolling bearing of an existing horizontal synchronous motor;

[0011] Figure 2 FIG. 10 is a schematic structural diagram of a new grease injection structure for a rolling bearing of the present utility model;

[0012] Figure 3 FIG. 14 is a schematic structural diagram of the grease injection structure of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] In order to better understand the technical solution of the present utility model, the following is a detailed description through specific embodiments:

[0014] For a horizontal synchronous motor, a slip ring cover 1 is bolted to the end face of the end cover 2. The slip ring cover 1 covers the outside of the rolling bearing 3, and the excitation lead 4 is led out from the bottom of the slip ring cover 1.

[0015] Please refer to Figure 2 and Figure 3 , a new grease injection structure for a rolling bearing of the present utility model includes a rolling bearing 3 and a grease injection structure 6.

[0016] An oil injection hole 5 is provided on the upper surface of the housing of the rolling bearing 3. The oil injection hole 5 is used for injecting grease into the rolling bearing and is directly connected to the grease injection structure 6.

[0017] In one embodiment, a base 64 for inserting a fuel pipe is provided on the oil injection hole 5 of the bearing, and a sealing structure is provided on the base. The base makes the connection between the oil injection hole 5 of the bearing and the grease injection structure 6 tight and not easily loosened, and ensures the sealing performance of the connection part.

[0018] The grease injection structure 6 includes an oil pipe 63, a joint 62, and a straight - through oil cup 61. The bottom end of the oil pipe 63 is inserted into the oil injection hole of the bearing. The oil pipe vertically passes upward through the slip ring cover 1 sleeved outside the rolling bearing 3, and the straight - through oil cup is arranged at the top end of the oil pipe. The straight - through oil cup 61 is used to connect with an oil injection device, and it is detachably connected to the oil pipe through the joint. It can be conveniently replaced when the structure ages, can adapt to different oil injection devices, and can seal the oil pipe when no oil injection operation is carried out.

[0019] In one embodiment, the slip ring cover 1 is connected to the end cover of the motor through the circular ring 7 on the end cover. The circular ring 7 on the end cover can enhance the connection firmness between the slip ring cover 1 and the end cover 2 and limit the position of the slip ring cover. A through hole is provided at the top of the circular ring 7 on the end cover, and the oil pipe passes vertically upward through the circular ring 7 on the end cover, thereby ensuring the compactness of the structural arrangement.

[0020] Those of ordinary skill in the art in this technical field should recognize that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. As long as within the scope of the substantial spirit of the present invention, changes and modifications to the above-described embodiments will fall within the scope of the claims of the present invention.

Claims

1. A novel rolling bearing oil injection structure, comprising a rolling bearing, characterized in that: It also includes an oil filling structure; a bearing oil filling hole is opened on the upper surface of the rolling bearing housing, the oil filling structure includes an oil pipe, a joint and a straight-through oil cup, the bottom end of the oil pipe is inserted into the bearing oil filling hole, the oil pipe vertically passes through the slip ring cover sleeved on the outside of the rolling bearing, and the straight-through oil cup is arranged on the top of the oil pipe.

2. The novel rolling bearing oil injection structure according to claim 1 is characterized in that: The straight-through oil cup is detachably connected to the oil pipe via a joint.

3. The novel rolling bearing oil injection structure according to claim 1 is characterized in that: The slip ring cover is connected to the end cover of the motor through the upper circular ring of the end cover. A through hole is opened on the top of the upper circular ring of the end cover, and the oil pipe passes through the upper circular ring of the end cover vertically upward.

4. The novel rolling bearing oil injection structure according to claim 1 is characterized in that: A base for plugging an oil supply pipe is arranged on the bearing oil filling hole, and a sealing structure is arranged on the base.

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