Simple device for disassembling and assembling pulley sheet bearing of bridge type ladle crane

Abstract

The utility model relates to a simple device for disassembling and assembling a pulley sheet bearing of a bridge type ladle crane, and belongs to the technical field of hoisting equipment in the metallurgical industry. According to the technical scheme, a hydraulic jack is vertically arranged in the center of a frame beam, and a pressing disc is arranged at the front end of a cylinder rod of the hydraulic jack; a barrel is arranged in the center of the frame base, the pulley piece and the bearing inside the pulley piece are placed on the top of the barrel, the inner diameter of the barrel is larger than or equal to the inner diameter of a bearing hole of the pulley piece, and the outer diameter of the pressing disc is smaller than or equal to the outer diameter of the bearing. And the center lines of the pressure plate, the hydraulic jack, the pulley sheet, the bearing and the drum are positioned on the same vertical line. The bearing assembling and disassembling device has the advantages that the frame type arrangement is adopted, the wheel sheet is placed on the hollow base, the pressing disc is placed on the bearing, the hydraulic jack is used for pressing out or pressing in the bearing downwards, bearing assembling and disassembling are achieved, and the bearing assembling and disassembling device is easy to install and convenient to maintain.

Description

Technical Field

[0001] This utility model relates to a simple device for disassembling and assembling the pulley bearings of a bridge casting crane, belonging to the technical field of lifting equipment in the metallurgical industry. Background Technology

[0002] The existing 320T bridge casting crane pulley bearings in the steel plant have reached the end of their service life and need to be replaced promptly. However, due to the tight fit of the bearings on the pulley wheels, on-site disassembly and assembly are very difficult, requiring outsourcing the disassembly and assembly using specialized large equipment, which increases maintenance costs. To solve this problem and reduce outsourced maintenance costs, it is necessary to address the difficulty of disassembling and assembling the pulley bearings, enabling a shift from external to internal maintenance and reducing external maintenance costs. Utility Model Content

[0003] The purpose of this utility model is to provide a simple device for disassembling and assembling the pulley bearings of a bridge casting crane. It adopts a frame arrangement, and the wheel is placed on a hollow base, the pressure plate is placed on the bearing, and the bearing is disassembled and assembled by pressing it out or in using a hydraulic jack. It is simple to install and easy to maintain, and solves the above-mentioned problems existing in the background technology.

[0004] The technical solution of this utility model is:

[0005] A simple device for disassembling and assembling the pulley bearings of a bridge casting crane includes a steel frame, a cylindrical barrel, a pressure plate, and a hydraulic jack. The H-shaped steel frame includes frame columns, frame bases, and frame beams. Four frame columns are vertically arranged at the four corners. The tops of adjacent frame columns are connected together by the frame beams, and the bottoms of adjacent frame columns are connected together by the frame bases. A hydraulic jack is vertically installed at the center of the frame beams. The cylinder of the hydraulic jack is welded to the surrounding frame beams, and a pressure plate is installed at the front end of the cylinder rod of the hydraulic jack. A cylindrical barrel is installed at the center of the frame base, and the bottom of the cylindrical barrel is welded to the surrounding frame bases. The pulley and its internal bearing are placed on top of the cylindrical barrel. The inner diameter of the cylindrical barrel is greater than or equal to the inner diameter of the bearing hole of the pulley, and the outer diameter of the pressure plate is less than or equal to the outer diameter of the bearing. The centerlines of the pressure plate, hydraulic jack, pulley, bearing, and cylindrical barrel are located on the same vertical line.

[0006] Furthermore, the cylinder of the hydraulic jack is welded to the surrounding frame beams via connecting ribs, and the bottom of the cylinder is welded to the surrounding frame base via connecting rib plates.

[0007] Furthermore, a frame diagonal brace is provided between the frame column and the frame base, and a reinforcing rib is provided between the frame column and the frame beam to increase strength.

[0008] Furthermore, the hydraulic jack is connected to the hydraulic pump via a hydraulic oil pipe.

[0009] Furthermore, the frame beam is provided with a frame lifting lug at its center for overall hoisting and movement.

[0010] Furthermore, the cylindrical barrel is welded and fixed to the surrounding frame base, the frame base is welded and fixed to the frame column 2, the frame diagonal brace is welded between the frame base and the frame column, and the frame crossbeam is welded to the frame column.

[0011] The beneficial effects of this utility model are as follows: It adopts a frame arrangement, and by placing the wheel piece on the hollow base and the pressure plate on the bearing, the bearing can be disassembled and assembled by using a hydraulic jack to press it out or in. The installation is simple and the maintenance is convenient. Attached Figure Description

[0012] Figure 1 This is a front view of the structural schematic diagram of this utility model;

[0013] Figure 2 This is a side view of the structural schematic diagram of this utility model;

[0014] Figure 3 This is a front view of the frame, which is a structural schematic diagram of this utility model.

[0015] Figure 4 This is a side view of the frame, which is a structural schematic diagram of this utility model.

[0016] In the diagram: Frame column 2, Frame column one 201, Frame column two 202, Frame column four 204, Frame base 3, Frame base one 301, Frame base two 302, Frame base three 303, Frame beam 4, Frame brace 5, Frame brace one 501, Frame brace two 502, Reinforcing rib 6, Reinforcing rib one 601, Reinforcing rib two 602, Frame lifting lug 7, Cylinder 8, Pressure plate 9, Cylinder rod 10, Hydraulic jack 11, Hydraulic oil pipe 1102, Hydraulic pump 1103, Pulley 12, Bearing 13. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] See attached document Figure 1-4A simple device for disassembling and assembling pulley bearings of a bridge casting crane includes a steel frame, a cylinder 8, a pressure plate 9, and a hydraulic jack 11. The H-shaped steel frame includes frame columns 2, frame bases 3, and frame beams 4. Four frame columns 2 are vertically arranged at the four corners. The tops of adjacent frame columns 2 are connected together by the frame beams 4, and the bottoms of adjacent frame columns 2 are connected together by the frame bases 3, forming a three-dimensional H-shaped steel frame. A hydraulic jack 11 is vertically installed at the center of the frame beams 4. The cylinder body of 1 is welded to the surrounding frame beams 4, and the cylinder rod 10 of the hydraulic jack 11 is equipped with a pressure plate 9 at its front end; a cylindrical barrel 8 is set at the center of the frame base 3, and the bottom of the cylindrical barrel 8 is welded to the surrounding frame base 3; the pulley plate 12 and its internal bearing 13 are placed on the top of the cylindrical barrel 8, the inner diameter of the cylindrical barrel 8 is greater than or equal to the inner diameter of the bearing hole of the pulley plate 12, and the outer diameter of the pressure plate 9 is less than or equal to the outer diameter of the bearing 13; the center lines of the pressure plate 9, the hydraulic jack 11, the pulley plate 12, the bearing 13 and the cylindrical barrel 8 are located on the same vertical line.

[0019] The cylinder of the hydraulic jack 11 is welded to the surrounding frame beams 4 via connecting ribs, and the bottom of the barrel 8 is welded to the surrounding frame base 3 via connecting rib plates.

[0020] A frame brace 5 is provided between the frame column 2 and the frame base 3, and a reinforcing rib 6 is provided between the frame column 2 and the frame beam 4 to increase strength.

[0021] The hydraulic jack 11 is connected to the hydraulic pump 1103 via a hydraulic oil pipe 1102.

[0022] The frame beam 4 is provided with a frame lifting lug 7 at its center for overall hoisting and movement.

[0023] The cylindrical barrel 8 is welded and fixed to the surrounding frame base 3. The frame base 3 is welded and fixed to the frame column 2. The frame diagonal brace 5 is welded between the frame base 3 and the frame column 2. The frame crossbeam 4 is welded to the frame column 2.

[0024] In this embodiment, the four frame columns 2 are frame column one 201, frame column two 202, frame column three, and frame column four 204; there are four frame bases 3, which are frame base one 301, frame base two 302, frame base three 303, and frame base four welded together end to end, forming a rectangular frame structure. The bottoms of frame column one 201 and frame column four 204 are welded to frame base one 301; the bottoms of frame column three and frame column four 204 are welded to frame base four. There are four frame diagonal braces 5, which are frame diagonal brace one 501, frame diagonal brace two 502, frame diagonal brace three, and frame diagonal brace four; there are four reinforcing ribs 6, which are reinforcing rib one 601, reinforcing rib two 602, reinforcing rib three, and reinforcing rib four.

[0025] In this embodiment, the distance between frame column one 201 and frame column two 202 is equal to the distance between frame column three and frame column four 204; the distance between frame column one 201 and frame column four 204 is equal to the distance between frame column two 202 and frame column three. The distance between frame column one 201 and frame column two 202 is relatively large, while the distance between frame column one 201 and frame column four 204 is relatively small. The distance between frame column one 201 and frame column four 204 matches the outer diameter of the cylinder 8, and the bottom of the cylinder 8 is directly welded to frame base three 303 and frame base four.

[0026] When disassembling the bearing on the pulley of the bridge casting crane, place the pulley 12 and its internal bearing 13 on the cylinder 8, and align the center lines of the pressure plate 9, hydraulic jack 11, pulley 12, bearing 13 and cylinder 8 on the same vertical line. Push the pressure plate 9 downwards with the hydraulic jack 11, and the pressure plate 9 presses on the bearing 13, thus removing the bearing 13 at the center of the pulley 12 from the pulley 12.

[0027] When installing the bearing on the pulley of the bridge casting crane, place the pulley 12 on the cylinder 8 and the bearing 13 at the center of the pulley 12. Make sure the center lines of the pressure plate 9, hydraulic jack 11, pulley 12, bearing 13 and cylinder 8 are on the same vertical line. Push the pressure plate 9 downward by the hydraulic jack 11, and the pressure plate 9 presses on the bearing 13, pressing the bearing 13 into the center of the pulley 12.

Claims

1. A simple device for disassembling and assembling the pulley bearings of a bridge casting crane, characterized in that: The system includes a steel frame, a cylindrical barrel (8), a pressure plate (9), and a hydraulic jack (11). The H-shaped steel frame includes frame columns (2), frame bases (3), and frame beams (4). The four frame columns (2) are arranged vertically at the four corners. The tops of adjacent frame columns (2) are connected together by the frame beams (4), and the bottoms of adjacent frame columns (2) are connected together by the frame bases (3). A hydraulic jack (11) is vertically installed at the center of the frame beams (4). The cylinder of the hydraulic jack (11) is welded to the surrounding frame beams (4). A pressure plate (9) is provided at the front end of the cylinder rod (10) of the top (11); a cylindrical barrel (8) is provided at the center of the frame base (3), and the bottom of the cylindrical barrel (8) is welded to the frame base (3) around it; the pulley (12) and its internal bearing (13) are placed on the top of the cylindrical barrel (8), the inner diameter of the cylindrical barrel (8) is greater than or equal to the inner diameter of the bearing hole of the pulley (12), and the outer diameter of the pressure plate (9) is less than or equal to the outer diameter of the bearing (13); the center lines of the pressure plate (9), the hydraulic jack (11), the pulley (12), the bearing (13) and the cylindrical barrel (8) are located on the same vertical line.

2. The simple device for disassembling and assembling pulley bearings of a bridge casting crane according to claim 1, characterized in that: The cylinder of the hydraulic jack (11) is welded to the surrounding frame beams (4) by connecting ribs, and the bottom of the barrel (8) is welded to the surrounding frame base (3) by connecting rib plates.

3. A simple device for disassembling and assembling pulley bearings of a bridge casting crane according to claim 1 or 2, characterized in that: A frame brace (5) is provided between the frame column (2) and the frame base (3), and a reinforcing rib (6) is provided between the frame column (2) and the frame beam (4).

4. A simple device for disassembling and assembling pulley bearings of a bridge casting crane according to claim 1 or 2, characterized in that: The hydraulic jack (11) is connected to the hydraulic pump (1103) via a hydraulic oil pipe (1102).

5. A simple device for disassembling and assembling pulley bearings of a bridge casting crane according to claim 1 or 2, characterized in that: The frame beam (4) is provided with a frame lug (7) at its center.

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