Iron car bearing housing and its oil injection joint device

Abstract

This utility model discloses a bearing housing for a molten iron car and its oil injection connector device. The oil injection connector device includes a first adapter pipe threaded to the end of an oil nozzle, a second adapter pipe threaded to the end of an oil pipe, and a movable connector connecting the second adapter pipe and the first adapter pipe. A first sealing nut is threadedly connected to the outer periphery of the middle of the first adapter pipe. The movable connector is rotatably connected to the outer periphery of the second adapter pipe. A threaded hole is opened on the inner wall of one end of the movable connector, and a limiting step is opened on the inner wall of the other end. The threaded hole is threadedly connected to the end of the first adapter pipe, and the second adapter pipe abuts against the end face of the limiting step. Fastening buckles are hinged on both sides of the outer periphery of the movable connector, and a groove matching the fastening buckles is opened around the outer periphery of the end of the second adapter pipe. This device eliminates the need for frequent disassembly of the bearing housing cover during use, reducing manual labor intensity. The rotatable connection between the movable connector and the second adapter pipe increases the rotational freedom of the oil pipe and the rotational range of the connector.

Description

Technical Field

[0001] This utility model belongs to the technical field of molten iron car bearing boxes, specifically relating to a molten iron car bearing box and its oil injection joint device. Background Technology

[0002] In metallurgical production, molten iron carts, as key equipment for transporting high-temperature molten iron, undertake the task of transferring molten iron from blast furnaces to steelmaking furnaces or casting machines. Their operational stability directly affects the continuity and safety of metallurgical production. In the molten iron cart's running system, bearings are the core components enabling the relative rotation of the wheels and axles. Under long-term heavy loads, impacts, and harsh conditions such as dust and high temperatures, they are highly susceptible to accelerated wear, overheating, and even seizure due to poor lubrication, leading to equipment failure, production interruptions, and even safety accidents. Therefore, regular and effective lubrication maintenance of molten iron cart bearings is crucial for ensuring the normal operation of the equipment. The lubrication process requires precise delivery of grease to the bearing interior through specific lubrication joints, ensuring that the grease evenly covers the friction surface, forming an effective oil film, reducing the coefficient of friction, and minimizing component wear. With the metallurgical industry's increasing demands for production efficiency and equipment reliability, the structural design and performance of traditional lubrication joints are gradually becoming insufficient to meet the maintenance needs of modern production. Optimization and improvement in the structural rationality, ease of operation, and adaptability of lubrication joints are urgently needed.

[0003] In existing technologies, the lubrication process requires frequent disassembly of the bearing housing cover. On one hand, the bearing housing cover itself is heavy, and disassembly and installation require 2-3 people working together, increasing labor intensity and extending maintenance time, thus affecting the turnaround efficiency of the molten iron car. On the other hand, due to the limitations of the old-style lubrication joint and oil pipe connection structure, the oil pipe's rotational freedom is insufficient, and the joint's rotation range is restricted. This makes it difficult for workers to flexibly adjust the lubrication angle and position in a confined working space, easily leading to incomplete lubrication or grease leakage, affecting lubrication effectiveness. Furthermore, frequent disassembly of the bearing housing cover may also lead to a decrease in the cover's sealing performance, increasing the risk of external dust and impurities entering the bearing and accelerating bearing wear. Therefore, there is an urgent need for a molten iron car bearing housing and its lubrication joint device. Utility Model Content

[0004] To address some or all of the technical problems existing in the prior art, this utility model provides an oil injection connector device for a molten iron car bearing housing. The oil injection connector device is disposed between an oil nozzle and an oil pipe. The oil injection connector device for the molten iron car bearing housing includes a first adapter pipe threadedly connected to the end of the oil nozzle, a second adapter pipe threadedly connected to the end of the oil pipe, and a movable connector connecting the second adapter pipe and the first adapter pipe, wherein:

[0005] The first adapter tube has a first sealing nut threadedly connected to the outer periphery of the middle part. The movable joint is rotatably connected to the outer periphery of the second adapter tube. One end of the movable joint has a threaded hole on its inner wall and a limiting step on its inner wall at the other end. The threaded hole is threadedly connected to the end of the first adapter tube. The second adapter tube abuts against the end face of the limiting step. Fastening buckles are hinged on both sides of the outer periphery of the movable joint. The end of the second adapter tube has a groove around its outer periphery that matches the fastening buckles.

[0006] Furthermore, in the aforementioned oil injection joint device for the molten iron car bearing box, limit holes are provided on both sides of the movable joint, and the fastening buckle is hinged to the limit holes by a pin.

[0007] Furthermore, in the aforementioned oil injection joint device for the bearing housing of the molten iron car, the free end of the fastening buckle is provided with a gripping protrusion.

[0008] Furthermore, in the above-mentioned oil injection joint device for the molten iron car bearing box, a sealing ring is provided between the second adapter pipe and the movable joint, and the sealing ring is provided on the end face of the limiting step.

[0009] Furthermore, in the aforementioned oil injection joint device for the molten iron car bearing box, a second sealing nut is threadedly connected to the outer circumference of the middle part of the second transfer pipe.

[0010] On the other hand, this utility model also provides a molten iron car bearing housing, which includes the aforementioned oil injection joint device.

[0011] The oil injection joint device for the bearing housing of the molten iron car of this utility model has the following advantages and beneficial effects:

[0012] (1) This device has a simple structure and is easy to disassemble and assemble. During use, there is no need to frequently disassemble the bearing box cover, which reduces the labor intensity of manual labor, shortens the maintenance operation time, and improves the turnover efficiency of the molten iron car. Through the rotational connection between the movable joint and the second rotating pipe, the rotational freedom of the oil pipe and the rotational range of the joint are increased, so that workers can flexibly adjust the oil injection angle and position in a narrow working space, ensure that the oil is injected in place, reduce grease leakage, and improve the lubrication effect.

[0013] (2) By setting the first sealing nut and the second sealing nut, the sealing performance between the first adapter pipe and the oil nozzle and the second adapter pipe and the oil pipe are enhanced respectively. By setting the sealing ring, the sealing performance between the second adapter pipe and the movable joint is enhanced. The overall sealing performance of the oil injection process is improved, the risk of external dust and impurities entering the bearing is reduced, and the bearing wear is reduced. By fastening the buckle and the groove, the risk of component separation during the oil injection process is reduced. It has good practicality. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for further understanding of the embodiments of this utility model and constitute a part of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0015] Figure 1 This is a schematic diagram of the oil injection joint device for the bearing box of a molten iron car according to this utility model.

[0016] Explanation of reference numerals in the attached figures:

[0017] 1. First adapter pipe; 11. First sealing nut; 2. Second adapter pipe; 21. Slot; 22. Second sealing nut; 3. Movable joint; 4. Fastening buckle; 41. Grip protrusion. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0019] like Figure 1 As shown, this utility model discloses a bearing housing for a molten iron car and its oil injection joint device.

[0020] On one hand, this utility model discloses an oil injection connector device for a molten iron car bearing housing. The oil injection connector device is disposed between an oil nozzle (not shown in the figure) and an oil pipe (not shown in the figure). The oil injection connector device for the molten iron car bearing housing includes a first adapter pipe 1 threadedly connected to the end of the oil nozzle, a second adapter pipe 2 threadedly connected to the end of the oil pipe, and a movable connector 3 connecting the second adapter pipe 2 and the first adapter pipe 1. The first adapter pipe 1 has a first sealing nut 11 threadedly connected to its outer circumference. Its function is to achieve a tight seal between the two after the first adapter pipe 1 is connected to the oil nozzle, preventing grease leakage and enhancing the stability of the connection. The movable connector 3 is rotatably connected to the outer circumference of the second adapter pipe 2. The rotatable design allows the movable connector 3 to rotate relative to the second adapter pipe 2 around its axis. Thus, during the oil injection process, when… When the oil injection angle needs to be adjusted, the first adapter pipe 1 and the oil nozzle can be rotated relative to the oil pipe by rotating the movable joint 3, which increases the flexibility of angle adjustment during the oil injection process and facilitates the adjustment of the oil injection direction in a narrow space. One end of the movable joint 3 has a threaded hole on its inner wall and a limit step on its inner wall at the other end. The threaded hole is threaded to the end of the first adapter pipe 1. The second adapter pipe 2 abuts against the end face of the limit step. Fastening buckles 4 are hinged on both sides of the outer periphery of the movable joint 3. The end of the second adapter pipe 2 has a groove 21 that matches the fastening buckle 4. When the second adapter pipe 2 abuts against the end face of the limit step, the fastening buckle 4 can be fastened into the groove 21 to further limit the axial movement of the second adapter pipe 2, ensuring the stability of the connection between the second adapter pipe 2 and the movable joint 3 and preventing them from separating due to vibration or other reasons during the oil injection process.

[0021] In one specific embodiment, in the oil injection joint device of the molten iron car bearing box of this utility model, the movable joint 3 has limit holes through both sides, and the fastening buckle 4 is hinged in the limit hole by a pin. This arrangement allows the fastening buckle 4 to rotate around the pin, which facilitates fastening and opening operations.

[0022] In one specific embodiment, in the oil injection joint device of the iron car bearing box of this utility model, the free end of the fastening buckle 4 is provided with a gripping protrusion 41. The gripping protrusion 41 is convenient for the operator to grip, making it easy to operate the fastening buckle 4 and improving the convenience of operation.

[0023] In one specific embodiment, in the oil injection joint device of the iron car bearing box of this utility model, a sealing ring is provided between the second adapter pipe 2 and the movable joint 3. The sealing ring is located on the end face of the limiting step. The sealing ring can enhance the sealing performance between the second adapter pipe 2 and the movable joint 3 and prevent the grease from leaking at the connection between the two.

[0024] In one specific embodiment, in the oil injection joint device of the iron car bearing box of this utility model, a second sealing nut 22 is threadedly connected to the outer circumference of the middle part of the second adapter pipe 2. After the second adapter pipe 2 is connected to the oil pipe, tightening the second sealing nut 22 can achieve a tight seal between the two, further preventing grease leakage and ensuring the sealing of the oil injection process.

[0025] On the other hand, this utility model also provides a molten iron car bearing housing, which includes the aforementioned oil injection joint device.

[0026] The working principle of the oil injection joint device for the bearing housing of the molten iron car of this utility model is as follows:

[0027] During use, firstly, thread one end of the first adapter pipe 1 to the oil nozzle, and screw the first sealing nut 11 into the space between the first adapter pipe 1 and the oil nozzle for a tight seal. Then, thread the movable joint 3 onto the other end of the first adapter pipe 1 to complete the connection and fixation between the movable joint 3 and the first adapter pipe 1. Next, thread one end of the second adapter pipe 2 to the oil pipe, and screw the second sealing nut 22, which was pre-installed on the outer circumference of the second adapter pipe 2, into the space between the second adapter pipe 2 and the oil nozzle interface for a tight seal, thus completing the connection and fixation between the oil pipe and the second adapter pipe 2. Finally, insert the end of the second adapter pipe 2 with the groove 21 into the movable joint 3 and abut it against the end face of the limiting step. Press the fastening buckle 4 to axially limit the second adapter pipe 2, thus completing the installation of this device. After that, the oil filling operation can be carried out.

[0028] In summary, compared with the prior art, the oil injection joint device for the bearing housing of the molten iron car of this utility model has the following advantages and beneficial effects:

[0029] (1) This device has a simple structure and is easy to disassemble and assemble. During use, there is no need to frequently disassemble the bearing box cover, which reduces the labor intensity of manual labor, shortens the maintenance operation time, and improves the turnover efficiency of the molten iron car. Through the rotational connection between the movable joint 3 and the second rotating pipe 2, the rotational freedom of the oil pipe and the rotational range of the joint are increased, so that workers can flexibly adjust the oil injection angle and position in a narrow working space, ensure that the oil is injected in place, reduce grease leakage, and improve the lubrication effect.

[0030] (2) By setting the first sealing nut 11 and the second sealing nut 22, the sealing performance between the first adapter pipe 1 and the oil nozzle and the second adapter pipe 2 and the oil pipe are enhanced respectively. By setting the sealing ring, the sealing performance between the second adapter pipe 2 and the movable joint 3 is enhanced. The overall sealing performance of the oil injection process is improved, the risk of external dust and impurities entering the bearing is reduced, and the bearing wear is reduced. By fastening the buckle 4 and the groove 21, the risk of component separation during the oil injection process is reduced. It has good practicality.

[0031] It should be noted that, unless otherwise expressly specified and limited, the term "connection" or its synonyms should be interpreted broadly in this document. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, expressions such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In addition, "front," "rear," "left," "right," "upper," and "lower" in this document refer to the placement state shown in the accompanying drawings.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lubricating fitting device for a bearing housing of a molten metal car, the lubricating fitting device being provided between a nozzle and a pipe, characterized by, The oil injection connector device for the molten iron car bearing housing includes a first adapter pipe threaded to the end of the oil nozzle, a second adapter pipe threaded to the end of the oil pipe, and a movable connector connecting the second adapter pipe and the first adapter pipe, wherein: The first adapter tube has a first sealing nut threadedly connected to the outer periphery of the middle part. The movable joint is rotatably connected to the outer periphery of the second adapter tube. One end of the movable joint has a threaded hole on its inner wall and a limiting step on its inner wall at the other end. The threaded hole is threadedly connected to the end of the first adapter tube. The second adapter tube abuts against the end face of the limiting step. Fastening buckles are hinged on both sides of the outer periphery of the movable joint. The end of the second adapter tube has a groove around its outer periphery that matches the fastening buckles.

2. The oil filling connection device for the bearing housing of a hot metal car axle according to claim 1, characterized in that, Limiting holes are provided on both sides of the movable joint, and the fastening buckle is hinged to the limiting holes by a pin.

3. The oil filling connection device of the bearing housing of the hot metal car axle according to claim 1, characterized in that, The free end of the fastening buckle is provided with a gripping protrusion.

4. The oil filling connection device for the bearing housing of a hot metal car axle as claimed in claim 1, wherein A sealing ring is provided between the second adapter pipe and the movable joint, and the sealing ring is disposed on the end face of the limiting step.

5. The oil filling connection device for the bearing housing of a hot metal car axle as claimed in claim 1, wherein The second adapter pipe has a second sealing nut connected to the outer circumference of the middle section.

6. A bearing housing for a molten metal car, characterized by The molten iron car bearing housing includes the oil injection joint device as described in any one of claims 1-5.

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