Mounting device for rocker arm oil film bearing of finishing mill on high-speed bar production line

Abstract

The utility model provides a high-speed bar production line finishing mill rocker arm oil film bearing installation device which comprises a rolling mill rocker arm, a shaft hole is formed in the rolling mill rocker arm, a connecting sleeve coaxial with the shaft hole is detachably arranged at the outer end of the shaft hole, and the inner diameter of the connecting sleeve is consistent with the inner diameter of the shaft hole. A pressing sleeve is arranged in the connecting sleeve, and the pressing sleeve is in clearance fit with the connecting sleeve and can move in the connecting sleeve in the axial direction. The connecting sleeve is arranged, the pressing sleeve is arranged in the connecting sleeve, the oil film bearing in the connecting sleeve is pressed into the shaft hole through the pressing sleeve, installation is completed, and compared with a manual installation mode, the oil film bearing moves stably in the installation process, pressing deviation is not prone to occurring, the installation effect is good, and the installation speed is high; the structure is simple, and the use mode is convenient.

Description

Technical Field

[0001] This utility model belongs to the field of bearing technology and relates to an oil film bearing installation device for the rocker arm of a high-speed bar mill finishing mill. Background Technology

[0002] The rocker arm oil film bearings of the high-speed bar mill finishing mill require high installation precision and are installed using an interference fit. Before installation, the oil film bearings need to be cooled with liquid nitrogen. The installation process has the following drawbacks: First, because the temperature of the oil film bearings is low after cooling, installers need to wear gloves to operate them. The process of pressing the oil film bearings into place is prone to misalignment, making it impossible to quickly and accurately assemble the oil film bearings into the installation position of the mill rocker arm bearings, resulting in low installation efficiency. Second, pressing the oil film bearings into place can easily injure fingers or scratch the surface coating of the oil film bearings, posing a safety hazard. Utility Model Content

[0003] The purpose of this invention is to address the problem of poor manual installation results of existing oil film bearings in the prior art, and to provide an installation device for the rocker arm oil film bearing of a high-speed bar mill finishing mill.

[0004] Therefore, the present invention adopts the following technical solution:

[0005] A high-speed bar mill finishing mill rocker arm oil film bearing installation device includes a mill rocker arm, the mill rocker arm having a shaft hole, and a connecting sleeve detachably provided at the outer end of the shaft hole and coaxially arranged with the shaft hole. The inner diameter of the connecting sleeve is the same as the inner diameter of the shaft hole. A pressing sleeve is provided inside the connecting sleeve, the pressing sleeve being clearance-fitted with the connecting sleeve and being axially movable within the connecting sleeve.

[0006] Furthermore, a locking ring is fixed at the outer end of the shaft hole, which is coaxial with the shaft hole. The inner diameter of the locking ring is the same as the inner diameter of the shaft hole. The end of the connecting sleeve near the shaft hole is provided with a locking step that matches the locking ring. The locking ring is located inside the locking step.

[0007] Furthermore, a limiting end plate is fixed at the end of the pressing sleeve away from the shaft hole. The limiting end plate is located outside the connecting sleeve and the diameter of the limiting end plate is larger than the inner diameter of the connecting sleeve.

[0008] Furthermore, the inner wall of the connecting sleeve is provided with a plurality of guide grooves along the circumference of the connecting sleeve, the guide grooves are arranged radially along the connecting sleeve, and the outer wall of the pressing sleeve is provided with a plurality of guide strips corresponding one to one with the guide grooves, the guide strips are located in the corresponding guide grooves and can move along the length direction of the guide grooves within the guide grooves.

[0009] The advantages of this utility model are as follows: a connecting sleeve is provided and a pressing sleeve is provided inside the connecting sleeve. The oil film bearing inside the connecting sleeve is pressed into the shaft hole by the pressing sleeve to complete the installation. Compared with the manual installation method, the oil film bearing moves smoothly during the installation process, is not easy to be pressed off-center, has a good installation effect, and is fast in installation speed; the structure is simple and the use method is convenient. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 yes Figure 1 Enlarged view of part A in the middle;

[0012] Figure 3 This is a diagram showing the usage state of this utility model;

[0013] In the figure, 1-rolling mill rocker arm, 2-shaft hole, 3-connecting sleeve, 4-positioning ring, 5-positioning step, 6-pressing sleeve, 7-limiting end plate, 8-guide groove, 9-guide bar, 10-oil film bearing. Detailed Implementation

[0014] The present invention will now be described in detail with reference to the accompanying drawings:

[0015] like Figure 1 and 2As shown, a high-speed bar mill finishing mill rocker arm oil film bearing installation device includes a mill rocker arm 1, a shaft hole 2 on the mill rocker arm 1, a rotating shaft and an oil film bearing for installation in the shaft hole 2, and a connecting sleeve 3 detachably provided at the outer end of the shaft hole 2, which is coaxially arranged with the shaft hole 2. The inner diameter of the connecting sleeve 3 is the same as the inner diameter of the shaft hole 2. During installation, the oil film bearing can be placed in the connecting sleeve 3 and then inserted into the shaft hole 2 through the connecting sleeve 3. Specifically, the outer end of the shaft hole 2... A locking ring 4 is fixedly arranged coaxially with the shaft hole 2. The inner diameter of the locking ring 4 is the same as the inner diameter of the shaft hole 2. The end of the connecting sleeve 3 near the shaft hole 2 is provided with a locking step 5 that matches the locking ring 4. The locking ring 4 is located inside the locking step 5. The locking ring 4 and the locking step 5 can accurately install the connecting sleeve 3, ensuring that the connecting sleeve 3 is connected to the shaft hole 2 coaxially. The connecting sleeve 3 is provided with a pressing sleeve 6, which is clearance-fitted to the connecting sleeve 3 and can be connected... The connecting sleeve 3 moves axially, and external force is applied to the oil film bearing by pressing the sleeve 6, causing the oil film bearing to move into the shaft hole 2 within the connecting sleeve 3. Since the pressing sleeve 6 can apply external force evenly to the entire end of the oil film bearing, it ensures that it is not pressed off-center during installation. A limiting end plate 7 is fixed to the end of the pressing sleeve 6 away from the shaft hole 2. When the operator presses the sleeve 6 by hand, it can be done through the limiting end plate 7. The limiting end plate 7 is located outside the connecting sleeve, and its diameter is larger than the inner diameter of the connecting sleeve 3. When the limiting end plate 7 contacts the end of the connecting sleeve 3 away from the shaft hole 2, the connecting sleeve 3 presses the oil film bearing into the corresponding installation position within the shaft hole 2. The length of the pressing sleeve 6 is equal to the distance between the outer installation position of the oil film bearing in the shaft hole 2 and the end of the connecting sleeve 3 away from the shaft hole 2. During installation, the connecting sleeve 3 obstructs the view, preventing the operator from observing whether the oil film bearing is installed in the correct position. The limiting end plate 7 facilitates operation.

[0016] To ensure stable movement of the pressing sleeve 6 within the connecting sleeve 3 during installation and prevent rotation, the inner wall of the connecting sleeve 3 is provided with multiple guide grooves 8 along its circumference. In this embodiment, four guide grooves 8 are provided. The guide grooves 8 are arranged radially along the connecting sleeve 3, and the length of the guide groove 8 is less than the length of the connecting sleeve 3. The guide groove 8 is located near the end of the connecting sleeve 3 away from the shaft hole 2. The outer wall of the pressing sleeve 6 is provided with multiple guide strips 9 that correspond one-to-one with the guide grooves 8. The guide strips 9 are located on the side of the pressing sleeve 6 near the limiting end plate 7, and the length of the guide strips 9 is less than the length of the guide grooves 8. The guide strips 8 are located within the corresponding guide grooves 8 and can move within the guide grooves 8 along their length.

[0017] The method of using this utility model is as follows:

[0018] When installing the oil film bearing, first insert the oil film bearing 10 into the connecting sleeve 3 near the locking step 5. Then, install the connecting sleeve 3 at the shaft hole 2 of the rolling mill rocker arm 1, so that the locking ring 4 at the shaft hole 2 is located within the locking step 5 on the connecting sleeve 3, ensuring that the connecting sleeve 3 and the shaft hole 2 are coaxial. Then, process the pressing sleeve 6 and install it into the connecting sleeve 3, so that the pressing sleeve 6 abuts against the end of the oil film bearing 10. Finally, the operator presses the limiting end plate 7 by hand, causing the pressing sleeve 6 to move and apply external force to the oil film bearing 10. Under the action of the external force of the pressing sleeve 6, the oil film bearing 10 moves out of the pressing sleeve 6 and moves smoothly into the shaft hole 2. When the oil film bearing 10 moves to the installation position, the limiting end plate 7 contacts the end of the connecting sleeve 3 away from the shaft hole 2 (e.g., Figure 2 As shown), the operator stops pressing and finally removes the connecting sleeve 3 to complete the installation. Using this device to install oil film bearings is efficient and quick, with good installation results and is less likely to injure the operator's hands.

Claims

1. A device for mounting an oil film bearing for a rocker arm (1) of a high-speed bar mill, comprising a rocker arm (1) of the mill, wherein the rocker arm (1) is provided with a shaft hole (2), characterized in that, The outer end of the shaft hole (2) is detachably provided with a connecting sleeve (3) coaxially arranged with the shaft hole (2). The inner diameter of the connecting sleeve (3) is the same as the inner diameter of the shaft hole (2). The connecting sleeve (3) is provided with a pressing sleeve (6). The pressing sleeve (6) is clearance-fitted with the connecting sleeve (3) and can move axially within the connecting sleeve (3).

2. The oil film bearing installation device for the rocker arm (1) of a high-speed bar mill finishing mill according to claim 1, characterized in that, The outer end of the shaft hole (2) is fixedly provided with a locking ring (4) coaxially arranged with the shaft hole (2). The inner diameter of the locking ring (4) is the same as the inner diameter of the shaft hole (2). The end of the connecting sleeve (3) near the shaft hole (2) is provided with a locking step (5) that is adapted to the locking ring (4). The locking ring (4) is located inside the locking step (5).

3. The oil film bearing installation device for the rocker arm (1) of a high-speed bar mill finishing mill according to claim 1, characterized in that, A limiting end plate (7) is fixed at one end of the pressing sleeve (6) away from the shaft hole (2). The limiting end plate (7) is located outside the connecting sleeve (3) and the diameter of the limiting end plate (7) is greater than the inner diameter of the connecting sleeve (3).

4. The oil film bearing installation device for the rocker arm (1) of a high-speed bar mill finishing mill according to claim 1, characterized in that, The inner wall of the connecting sleeve (3) is provided with a plurality of guide grooves (8) along the circumference of the connecting sleeve (3). The guide grooves (8) are arranged radially along the connecting sleeve (3). The outer wall of the pressing sleeve (6) is provided with a plurality of guide strips (9) corresponding to the guide grooves (8). The guide strips (9) are located in the corresponding guide grooves (8) and can move along the length of the guide grooves (8) within the guide grooves (8).

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