A mechanical device for a middle plate rough and finish rolling stand roller transmission bearing bush bracket

Abstract

The utility model relates to a kind of middle thick plate rough and finish rolling rack roller transmission bearing bush bracket mechanical device, especially a kind of mechanical device between babbitt bearing seat and bearing seat.A kind of middle thick plate rough and finish rolling rack roller transmission bearing bush bracket mechanical device, including installation bottom plate, further including bush seat, bearing bush;Bush seat includes upper bush seat, lower bush seat, upper bush seat is installed on lower bush seat, lower bush seat is installed on installation bottom plate, the installation surface between upper bush seat and lower bush seat is set as stepped surface, recess for accommodating bearing bush is set in the corresponding position of both inner surfaces.This utility model has the following advantages:1, redesign simplifies mechanical structure, significantly reduces design manufacturing cost;2, bearing bush can increase equipment bearing load capacity, reduce mechanical wear;3, realize single double coupling transmission shaft, bush seat, copper bush spare parts universal, later spare part replacement, maintenance is convenient;4, realize automatic lubrication and improve operation efficiency, reduce equipment damage frequency and prolong equipment service life.

Description

Technical Field

[0001] This utility model relates to a mechanical device for a roller drive bearing bracket of a medium-thick plate roughing and finishing mill, and more particularly to a mechanical device between a Babbitt alloy bearing seat and a bearing seat. Background Technology

[0002] The roll drive shaft of a medium-thick plate rolling mill is a crucial piece of equipment for power transmission between the single and double stands of the roughing and finishing mills and the motor. This structural component also ensures the concentricity of the drive shaft and withstands the impact of rolling passes on the machinery.

[0003] The clutch of the mill roll drive mainly consists of a gear shaft, rack, and housing. The mill rolls operate in extremely harsh environments, experiencing significant impacts during steel rolling, which often leads to the following problems in the drive system: 1. The gear shaft and shaft may become loose, preventing the motor from driving the frame rollers to rotate via the transmission shaft; 2. When the drive shaft rotates, the limit plate will be worn by the rack. Once the limit plate is worn away, the drive shaft will move horizontally during rotation. The wear-resistant sleeve has a short service life, causing misalignment between the spline shaft and the gear sleeve inside the stand roll. Abnormal gear meshing leads to gear breakage, and the stand roll may automatically disengage from the drive shaft or become stuck and unable to disengage, resulting in a series of problems. The original design of the clutch was fixed to the rolling mill stand by a flange with six M20 bolts. Misalignment of the transmission often leads to thread stripping failure and clutch damage and scrapping. The actual service life is less than 3 months, resulting in very high spare parts costs and staff maintenance intensity. 3. The support ring in the support device is made of non-metallic material, which will wear out quickly. The frame roller drive shaft in the middle of the inlet and outlet lacks a support point, resulting in significant shaking during rotation and making maintenance of faulty and easily damaged parts particularly difficult. Utility Model Content

[0004] The purpose of this invention is to provide a mechanical device for the roller drive bearing bracket of a medium-thick plate roughing and finishing mill, which does not require long-term maintenance and will not affect the normal production order.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a mechanical device for a roller drive bearing bracket of a medium-thick plate roughing and finishing mill, comprising a mounting base plate, and further comprising a bearing seat and bearings; the bearing seat comprises an upper bearing seat and a lower bearing seat, the upper bearing seat is mounted on the lower bearing seat, and the lower bearing seat is mounted on the mounting base plate, the mounting surface between the upper bearing seat and the lower bearing seat is set as a stepped surface, and grooves for accommodating bearings are provided at corresponding positions on the inner surfaces of both.

[0006] Preferably, protrusions are provided at both ends of the bearing bush along the axial direction, and the protrusions are adapted to the grooves.

[0007] Preferably, the bearing shell includes an upper bearing shell and a lower bearing shell; the upper bearing shell is installed on the inner surface of the upper bearing shell seat, and the lower bearing shell is installed on the inner surface of the lower bearing shell seat; the mating surfaces of the upper bearing shell and the lower bearing shell are flat.

[0008] Preferably, a threaded hole is provided on the upper surface of the upper tile seat, the threaded hole is located at the center of the upper surface, and the threaded hole penetrates the upper surface of the upper tile seat.

[0009] Preferably, an oiling and lubrication hole is provided on the upper bearing shell, and the oiling and lubrication hole penetrates the upper and lower surfaces of the upper bearing shell; the threaded hole is connected to the oiling and lubrication hole.

[0010] Compared with the prior art, the present invention has the following advantages: 1. The mechanical structure was redesigned and simplified, with only one vulnerable part in the overall design, which significantly reduced design and manufacturing costs; 2. Compared with the original clutch transmission device, the bearing bush can increase the load-bearing capacity of the equipment and reduce mechanical wear; 3. Enables universal use of single and double drive shafts, bearing seats, and copper bushings, facilitating future replacement and maintenance of spare parts; 4. Automatic lubrication improves work efficiency, reduces equipment damage frequency, and extends equipment life. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is a perspective view of an embodiment of the present utility model; Figure 3 This is a schematic diagram of the lower tile base structure in an embodiment of this utility model; Figure 4 This is a schematic diagram of the upper bearing structure in an embodiment of this utility model; Figure 5 This is a schematic diagram of the lower bearing structure in an embodiment of this utility model; Figure 1-5 In the middle section, 1. Install the base plate; 2. Install the upper bearing plate; 3. Install the lower bearing plate; 4. Install the upper bearing plate; 5. Install the lower bearing plate. Detailed Implementation

[0012] The following is in conjunction with the appendix Figure 1-5 Further details of this utility model: A mechanical device for the roller drive bearing bracket of a medium-thick plate roughing and finishing mill, such as... Figure 1-3 As shown, the device includes a mounting base plate 1, a bearing seat, and a bearing bush. The bearing seat includes an upper bearing seat 2 and a lower bearing seat 3. The upper bearing seat 2 is mounted on the lower bearing seat 3, and the lower bearing seat 3 is mounted on the mounting base plate 1. The mounting surfaces between the upper bearing seat 2 and the lower bearing seat 3 are set as stepped surfaces, and grooves for accommodating bearing bushes are provided at corresponding positions on the inner surfaces of both. After installation, the transmission device passes through the central shaft of the device.

[0013] As a preferred embodiment of this example, Figure 4-5 As shown, protrusions are provided at both ends of the upper bearing shell 4 and the lower bearing shell 5 along the axial direction, and the protrusions are adapted to the grooves.

[0014] In a preferred embodiment of this invention, the bearing bush includes an upper bearing bush 4 and a lower bearing bush 5; the upper bearing bush 4 is installed on the inner surface of the upper bearing bush 2, and the lower bearing bush 3 is installed on the inner surface of the lower bearing bush 2; the mating surfaces of the upper bearing bush and the lower bearing bush are flat.

[0015] As a preferred embodiment of this example, Figure 2 As shown, a threaded hole is provided on the upper surface of the upper tile seat 2. The threaded hole is located at the center of the upper surface and penetrates the upper surface of the upper tile seat.

[0016] In a preferred embodiment of this invention, an oiling and lubrication hole is provided on the upper bearing shell, and the oiling and lubrication hole penetrates the upper and lower surfaces of the upper bearing shell; the threaded hole is connected to the oiling and lubrication hole.

[0017] As a preferred embodiment of this invention, lubrication holes may also be provided on the sides of the upper bearing seat 2 and the lower bearing seat 3; grooves may be provided in the upper bearing seat 2 and the lower bearing seat 3 at positions corresponding to the lubrication holes.

[0018] Of course, the device can be improved as needed. For example, the upper and lower bearing seats can be double-connected, that is, a flange structure can be added to one side of the axial direction.

[0019] This device combines the current design schemes of various mainstream medium plate mills and can be used to support and fix the roller drive shaft of medium and heavy plate roughing and finishing mills without modifying the structure design of the rolling mill stand and without needing to carry out long-term maintenance to avoid affecting the normal production order. It is suitable for high torque transmission devices, harsh working conditions, and equipment where concentricity correction is difficult.

Claims

1. A mechanical device for a roller drive bearing bracket of a medium-thick plate roughing and finishing mill, comprising a mounting base plate, characterized in that: It also includes bearing seats and bearing bushes; the bearing seats include upper bearing seats and lower bearing seats, the upper bearing seat is installed on the lower bearing seat, and the lower bearing seat is installed on the mounting base plate. The mounting surface between the upper bearing seat and the lower bearing seat is set as a stepped surface, and grooves for accommodating bearing bushes are provided at corresponding positions on the inner surfaces of both.

2. The mechanical device for the roller drive bearing bracket of a medium-thick plate roughing and finishing mill according to claim 1, characterized in that: The bearing bush has protrusions at both ends along its axial direction, which are adapted to the grooves.

3. The mechanical device for the roller drive bearing bracket of a medium-thick plate roughing and finishing mill according to claim 1 or 2, characterized in that: The bearing shell includes an upper bearing shell and a lower bearing shell; the upper bearing shell is installed on the inner surface of the upper bearing shell seat, and the lower bearing shell is installed on the inner surface of the lower bearing shell seat. The mating surfaces of the upper and lower bearing bushes are flat.

4. The mechanical device for the roller drive bearing bracket of a medium-thick plate roughing and finishing mill according to claim 1, characterized in that: A threaded hole is provided on the upper surface of the upper tile seat. The threaded hole is located at the center of the upper surface and penetrates the upper surface of the upper tile seat.

5. The mechanical device for the roller drive bearing bracket of a medium-thick plate roughing and finishing mill according to claim 3, characterized in that: The upper bearing shell has a lubrication hole that extends through the upper and lower surfaces of the upper bearing shell.

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