Bearing box

Abstract

The utility model discloses a bearing box which comprises a bearing box body, a respirator, an outer screwed plug, an oil cup, a bearing gland, a framework oil seal, an oil discharge port and a rotating shaft, a first mounting hole, a second mounting hole and an oil outlet are formed in the side surface of the bearing box body; the respirator is mounted in the first mounting hole; the oil cup is mounted in the second mounting hole; the outer screwed plug is mounted in the oil discharge outlet; a bearing gland and an oil seal mounting groove are arranged at the end part of the bearing box body; the oil seal installation groove is located in the side, close to the interior of the bearing box body, of the bearing gland. The framework oil seal is installed in the oil seal installation groove. One end of the rotating shaft is located in the bearing box body, and the other end of the rotating shaft sequentially penetrates through the framework oil seal and the bearing gland and extends out of the bearing box body. According to the utility model, real-time monitoring and timely maintenance of the lubricating oil can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing box manufacturing technical field, in particular to a bearing box. BACKGROUND

[0002] The existing bearing box generally adopts the bearing structure of oil-free injection form, and this structure has obvious technical defects. Due to the lack of effective lubrication state monitoring mechanism, the use condition of the bearing internal grease cannot be grasped in real time. When the bearing appears high temperature or other abnormal state, the problem cannot be found and diagnosed in time, and only emergency treatment can be carried out after the fault occurs. This passive maintenance mode not only increases the non-planned downtime of the equipment, but also leads to the high overall failure rate of the bearing box. Especially under the continuous running condition, the bearing lubrication state cannot be monitored and adjusted in time, which seriously affects the operation reliability and service life of the equipment. In addition, these problems not only increase the maintenance cost of the equipment, but also bring great safety hazards to production and operation.

[0003] Therefore, it is urgent to provide a bearing box to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a bearing box, which can realize real-time monitoring and timely maintenance of lubricating oil.

[0005] To solve the above technical problems, the utility model provides a bearing box, which comprises a bearing box body, a breather, an external thread plug, an oil cup, a bearing gland, a skeleton oil seal, an oil discharge port and a rotating shaft.

[0006] The side surface of the bearing box body is provided with a first mounting hole, a second mounting hole and the oil discharge port; the breather is installed in the first mounting hole; the oil cup is installed in the second mounting hole; and the external thread plug is installed in the oil discharge port.

[0007] The end of the bearing box body is provided with the bearing gland and an oil seal mounting groove; the oil seal mounting groove is located on the side of the bearing gland close to the inside of the bearing box body, and the skeleton oil seal is installed in the oil seal mounting groove.

[0008] One end of the rotating shaft is located in the bearing box body, and the other end sequentially passes through the skeleton oil seal and the bearing gland and extends to the outside of the bearing box body.

[0009] Further, the first mounting hole is a threaded hole; and the breather is threadedly connected with the first mounting hole.

[0010] Further, the second mounting hole is a threaded hole; and the oil cup is threadedly connected with the second mounting hole.

[0011] Further, the oil discharge port is threadedly connected with the outer plug.

[0012] Further, the respirator is internally provided with a filter screen.

[0013] Further, the oil cup is filled with lubricating oil.

[0014] Further, the oil cup comprises a transparent oil cup for observing the lubricating oil level.

[0015] Further, the bearing gland is detachably connected with the bearing box body through bolts.

[0016] Further, the bearing gland is provided with a sealing gasket at the connecting position with the bearing box body.

[0017] Further, the inner ring of the skeleton oil seal is sealingly matched with the rotating shaft.

[0018] Through the above technical scheme, the utility model has the following beneficial effects:

[0019] Through the arrangement of the bearing box body, the respirator, the oil cup, the oil discharge port and other structures, the functions of lubricating oil filling, discharging and pressure balance can be realized, and meanwhile, through the cooperation of the bearing gland and the skeleton oil seal, the sealing performance of the bearing box can be ensured, and the lubricating oil leakage can be effectively prevented.

[0020] Through the arrangement of the transparent oil cup, the lubricating oil level and the state of the lubricating oil in the bearing box can be observed, the sealing gasket and the skeleton oil seal can provide reliable sealing effect, and the bolt connection mode is convenient for dismounting and maintaining, and these features can improve the practicability and maintainability of the bearing box. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 Fig. 1 is a structural schematic view of a bearing box according to an embodiment of the utility model.

[0022] In the figure, 1 is a bearing box body; 2 is a respirator; 3 is an oil cup; 4 is a bearing gland; 5 is a skeleton oil seal; 6 is an oil discharge port; and 7 is a rotating shaft. DETAILED DESCRIPTION

[0023] The utility model will be described in more detail below in combination with the drawings, wherein the preferred embodiments of the utility model are shown, and it should be understood that the utility model described herein can be modified by those skilled in the art, and the advantageous effects of the utility model can still be achieved. Therefore, the following description should be understood as extensive knowledge for those skilled in the art, and not as a limitation on the utility model.

[0024] The present invention will be described in more detail below by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0025] like Figure 1 As shown in the figure, this utility model embodiment proposes a simple and practical bearing housing, including a bearing housing body 1, a breather 2, an external threaded plug, an oil cup 3, a bearing cover 4, a skeleton oil seal 5, an oil drain port 6, and a rotating shaft 7.

[0026] Specifically, the bearing housing body 1 has a first mounting hole, a second mounting hole, and an oil drain port 6 on its side; the breather 2 is installed in the first mounting hole; the oil cup 3 is installed in the second mounting hole; the external plug is installed in the oil drain port 6; the bearing housing body 1 has a bearing cap 4 and an oil seal mounting groove at its end; the oil seal mounting groove is located on the side of the bearing cap 4 near the interior of the bearing housing body 1, and the skeleton oil seal 5 is installed in the oil seal mounting groove; one end of the rotating shaft 7 is located inside the bearing housing body 1, and the other end passes through the skeleton oil seal 5 and the bearing cap 4 in sequence and extends to the outside of the bearing housing body 1. This embodiment, through the above structure, enables the bearing housing to achieve lubricant filling, drainage, and pressure balance, thereby improving maintenance efficiency.

[0027] In this embodiment, the main function of the first mounting hole is to install the breather 2, which is used to balance the pressure inside and outside the bearing housing and prevent oil leakage caused by pressure difference. At the same time, the filter screen inside the breather 2 (not shown in the figure for simplicity) can block external dust and impurities from entering the housing and keep the housing environment clean. The second mounting hole is used to install the oil cup 3, which facilitates the addition of lubricating oil and the observation of the liquid level. Its position is set at an appropriate height to ensure sufficient oil level without overflowing. The oil drain port 6 is located at the bottom of the housing for easy discharge of waste oil and cleaning of the housing.

[0028] In this embodiment, the function of the breather 2 is twofold: firstly, to allow gas to escape from the bearing housing when the temperature rises, preventing pressure increases; and secondly, to allow external air to enter when the temperature drops, preventing negative pressure formation. Simultaneously, the breather 2 has a filtering function, capable of blocking over 95% of dust particles. The external threaded plug seals the oil drain port 6, allowing for easy and quick disassembly when lubricating oil needs to be changed. The material and thread specifications of the external threaded plug provide excellent sealing performance. The skeleton oil seal 5 is installed in the oil seal mounting groove, preventing lubricating oil leakage along the rotating shaft 7 and preventing external dust from entering the bearing housing. The skeleton oil seal 5 employs an elastic lip design, capable of accommodating minute axial and radial displacements.

[0029] Preferably, the first mounting hole is a threaded hole, facilitating the mounting and dismounting of the breather 2 and the oil cup 3; the breather 2 is threadedly connected with the first mounting hole. Further, the second mounting hole is a threaded hole, facilitating the mounting and dismounting of the breather 2 and the oil cup 3; the oil cup 3 is threadedly connected with the second mounting hole. Those skilled in the art can know that the size of the threaded hole can be set according to actual needs. The breather 2 is internally provided with a filter screen, which can effectively block external dust from entering the bearing box.

[0030] In the embodiment, the oil drain port 6 is threadedly connected with the outer plug. Those skilled in the art can know that the specific size of the oil drain port 6 and the outer plug can be adjusted according to actual needs.

[0031] In a specific example, the oil cup 3 is filled with lubricating oil. Further, the oil cup 3 includes a transparent oil cup 3 for observing the lubricating oil level. The oil cup 3 of the embodiment can be made of transparent material, for example, to facilitate the observation of the lubricating oil level. In a specific example, the oil cup 3 can be made of tempered glass or high-strength transparent engineering plastic, with a pressure resistance not less than 0.6 MPa, improving the durability and safety of the oil cup 3. The oil cup 3 can also be provided with a scale line to intuitively display the lubricating oil level.

[0032] In a specific embodiment, the bearing gland 4 is detachably connected with the bearing box body 1 by bolts. Specifically, the bolts can be 8.8-grade M8, uniformly arranged in the circumferential direction of the bearing gland 4, and the bolt holes adopt a countersunk structure to avoid the protruding bolt head affecting the appearance and safety. The bolts are installed with a fixed torque to improve the stability of the connection.

[0033] Preferably, the bearing gland 4 is provided with a sealing gasket at the connection with the bearing box body 1. Specifically, the sealing gasket can be made of an asbestos gasket, for example, which has good oil resistance and temperature resistance, with a use temperature range of -100℃ to 1000℃, and can enhance the sealing effect.

[0034] In the embodiment, the inner ring of the skeleton oil seal 5 is sealingly fitted with the rotating shaft 7.

[0035] In a specific embodiment, the initial installation: first install the bearing into the bearing box body 1, and then pass the rotating shaft 7 through the bearing. Install the skeleton oil seal 5 into the oil seal mounting groove, and ensure that the oil seal lip is directed towards the bearing box interior. Install the bearing gland 4, and place a sealing gasket between the gland and the bearing box body 1. Tighten the bolts in a diagonal sequence using a torque wrench. Lubricating oil filling: fill lubricating oil through the oil cup 3, and the oil level should be controlled at the predetermined position of the oil cup 3 scale. After filling is completed, check whether there is leakage at each sealing position. During operation, the breather 2 adjusts the pressure inside and outside the box through the filter screen inside the breather, while preventing external dust from entering.

[0036] In which, the state of the lubricating oil is observed through the transparent oil cup 3: for example, a sudden decrease in oil level indicates that there may be a leak, black or turbid oil indicates that it needs to be replaced, bubbles in the oil indicate that the seal may fail, and metal particles in the oil indicate that the bearing may be worn.

[0037] In this embodiment, the lubricating oil can be replaced at a predetermined time, and the replacement steps are: after the equipment is shut down and cooled, the external plug is removed; the waste oil is discharged, and the box is flushed with cleaning oil; the external plug is installed back, new oil is injected, and a short-time operation is performed to check whether each position is normal.

[0038] In this embodiment, when the bearing box is in operation, the internal pressure is balanced through the breather 2, and the lubricating oil is filled from the oil cup 3 until it reaches the standard oil level. When it is necessary to replace the lubricating oil, the external plug can be opened for discharge. The bearing gland 4 and the skeleton oil seal 5 work together to prevent lubricating oil leakage. The transparent oil cup 3 facilitates observation of the lubricating oil level, and timely replenishment or replacement of the lubricating oil. During routine maintenance, the lubrication condition can be judged by observing the color and level of the lubricating oil in the oil cup 3, and abnormal conditions can be treated in a timely manner. The various components of this embodiment cooperate with each other, which can not only ensure the lubrication effect of the bearing, but also provide reliable sealing performance, and is convenient for daily maintenance and repair.

[0039] In summary, the bearing box has the following advantages:

[0040] By setting the bearing box body, breather, oil cup, oil discharge port and other structures, the functions of lubricating oil filling, discharge and pressure balance can be realized, and through the cooperation of the bearing gland and the skeleton oil seal, the sealing performance of the bearing box can be ensured, and the leakage of lubricating oil can be effectively prevented.

[0041] By setting the transparent oil cup, the lubricating oil level and the state of the lubricating oil in the bearing box can be observed, the sealing gasket and the skeleton oil seal can provide reliable sealing effect, and the bolt connection mode is convenient for disassembly and maintenance, which can improve the practicability and maintainability of the bearing box.

[0042] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A bearing housing, characterized in that, The bearing box body, breather, outer thread plug, oil cup, bearing gland, skeleton oil seal, oil discharge port and rotating shaft are included. The side surface of the bearing box body is provided with a first mounting hole, a second mounting hole and the oil discharge port; the breather is mounted in the first mounting hole; the oil cup is mounted in the second mounting hole; and the outer thread plug is mounted in the oil discharge port. The end of the bearing box body is provided with the bearing gland and an oil seal mounting groove; the oil seal mounting groove is located on the side of the bearing gland close to the inside of the bearing box body, and the skeleton oil seal is mounted in the oil seal mounting groove. One end of the rotating shaft is located in the bearing box body, and the other end sequentially passes through the skeleton oil seal and the bearing gland and extends out of the bearing box body.

2. The bearing housing of claim 1, wherein, The first mounting hole is a threaded hole; and the breather is threadedly connected with the first mounting hole.

3. The bearing housing of claim 1, wherein, The second mounting hole is a threaded hole; and the oil cup is threadedly connected with the second mounting hole.

4. The bearing housing of claim 1, wherein, The oil discharge port is threadedly connected with the outer thread plug.

5. The bearing housing of claim 1, wherein, The breather is internally provided with a filter screen.

6. The bearing housing of claim 1, wherein, The oil cup is filled with lubricating oil.

7. The bearing housing of claim 6, wherein, The oil cup includes a transparent oil cup for observing the lubricating oil level.

8. The bearing housing of claim 1, wherein, The bearing gland is detachably connected with the bearing box body by bolts.

9. The bearing housing of claim 1, wherein, A sealing gasket is arranged at the connection between the bearing gland and the bearing box body.

10. The bearing housing of claim 1, wherein, The inner ring of the skeleton oil seal is sealingly matched with the rotating shaft.

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