Outer cover of furnace bottom roller bearing of heating furnace

Abstract

The utility model relates to a heating furnace bottom roller bearing outer cover and belongs to the technical field of steel rolling heat treatment heating furnace equipment in the metallurgical industry. According to the technical scheme, the device comprises a fixed cylinder cover (6), a rotating cylinder cover (8), a semicircular oil baffle plate (11), a rotating rod (12) and a blocking rod, the fixed cylinder cover (6) is fixed to a furnace bottom roller bearing seat through a flange, one end of the rotating cylinder cover (8) is connected with the fixed cylinder cover (6), the other end of the rotating cylinder cover (8) is cut into a semicircle, the semicircular oil baffle plate (11) is arranged, the rotating rod (12) is fixed to the rotating cylinder cover (8), and the blocking rod is arranged on the rotating cylinder cover (8). The blocking rod is fixed on the fixed cylinder cover (6) and is matched with the rotating rod (12); the stop lever comprises a right stop lever (13) and a left stop lever (14); and the right stop lever (13) and the left stop lever (14) are symmetrically fixed on two radial sides of the fixed cylinder cover (6). The device has the beneficial effects that the aged and solidified lubricating grease can be quickly checked and cleaned on line.

Description

Technical Field

[0001] The utility model relates to a bearing cover of a furnace bottom roller of a heating furnace, and belongs to the technical field of steel rolling heat treatment heating furnace equipment in the metallurgical industry. Background Art

[0002] In the process of steel rolling, the high value-added steel plates produced need to be heated in a heating furnace. The heating furnace is about 70 meters long, with a heating temperature of 600-1080℃. It consists of 118 furnace bottom rollers of ¢400×6200mm, each weighing about 2 tons. During production, several tons of high-temperature steel plates need to be continuously heated on the furnace bottom rollers, which makes the free end bearing of the furnace bottom roller work poorly. Although there is an insulation layer between the free end bearing and the high-temperature steel plate in the furnace, the bearing still solidifies the grease of some bearings due to high temperature aging due to various reasons such as high temperature conduction, resulting in the inability to add the automatically added grease, and the bearing and bearing seat are damaged.

[0003] Refer to the attached Figure 1 The free end bearing shield of the furnace bottom roller is a cap-shaped bearing shield, which is installed on the bearing seat through a flange. The grease solidified due to high temperature aging accumulates in the cap-shaped bearing shield. It is necessary to regularly open the flanged cap-shaped bearing shield of each bearing one by one to check the bearing and clean the solidified bearing grease to ensure the normal operation of the heating furnace. However, to open, clean and inspect the cap-shaped bearing shield of a furnace bottom roller, it is necessary to dismantle and install up to 8 fixing bolts, which takes about 30 minutes, which is time-consuming and laborious. According to this method, it takes nearly 60 hours to inspect 118 furnace bottom roller bearings, and most of the intact furnace bottom roller bearings will pollute the environment because the grease inside will automatically fall off the ground when the bearing shield is opened for inspection. Therefore, it is necessary to design a heating furnace furnace bottom roller bearing outer cover that can easily inspect and clean the aged and solidified grease. Utility Model Content

[0004] The utility model aims to provide a bearing cover of a furnace bottom roller of a heating furnace, which can quickly inspect and clean the aged and solidified grease online, and solve the problems existing in the background technology.

[0005] The technical solution of the utility model is:

[0006] A heating furnace bottom roller bearing outer cover comprises a fixed barrel cover, a rotating barrel cover, a semicircular oil baffle, a rotating rod and a shift rod. The fixed barrel cover is fixed to the bottom roller bearing seat through a flange. One end of the rotating barrel cover is connected to the fixed barrel cover. The other end of the rotating barrel cover is cut into a semicircle and a semicircular oil baffle is provided. The rotating rod is fixed to the rotating barrel cover. The shift rod is fixed to the fixed barrel cover. The shift rod cooperates with the rotating rod.

[0007] The gear lever is L-shaped and matches with the rotating lever.

[0008] The gear lever comprises a right gear lever and a left gear lever, and the right gear lever and the left gear lever are symmetrically fixed on two radial sides of the fixed cylinder cover.

[0009] One end of the rotating barrel cover connected to the fixed barrel cover is provided with an inner thread, and the fixed barrel cover is provided with an outer thread matched with the inner thread.

[0010] One end of the rotating drum cover cut into a semicircle is provided with a groove for hanging an oil drum.

[0011] The utility model has the beneficial effects of being able to conveniently check and clean aged and solidified grease, ensuring the normal operation of the heating furnace, and reducing the spare parts cost of the furnace bottom roller and the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the background technology structure;

[0013] Figure 2 This is the front view of the utility model;

[0014] Figure 3 It is a top view of the utility model;

[0015] Figure 4 It is a side view of the utility model;

[0016] Figure 5 This is a schematic diagram of the use state of the utility model;

[0017] Figure 6 This is a schematic diagram of the state of cleaning aged and solidified grease according to the utility model;

[0018] Figure 7 It is a schematic diagram of a scraper;

[0019] In the figure: a cap-shaped bearing cover 1, a furnace bottom roller shaft 2, a furnace bottom roller bearing 3, a bearing seat refueling hole 4, an outer cover of the utility model 5, a fixed cylinder cover 6, an outer thread 7, a rotating cylinder cover 8, an inner thread 9, a hanging oil drum groove 10, a semicircular oil baffle plate 11, a rotating rod 12, a right baffle rod 13, a left baffle rod 14, a scraper 15, an oil drum 16, a dust shield edge 17, and aged and solidified grease 18. DETAILED DESCRIPTION

[0020] The present invention will be further described below by way of examples with reference to the accompanying drawings.

[0021] Refer to the attached Figure 2-7A heating furnace bottom roller bearing outer cover comprises a fixed barrel cover 6, a rotating barrel cover 8, a semicircular oil baffle plate 11, a rotating rod 12 and a gear lever. The fixed barrel cover 6 is fixed to the bottom roller bearing seat through a flange. One end of the rotating barrel cover 8 is connected to the fixed barrel cover 6. The other end of the rotating barrel cover 8 is cut into a semicircle and a semicircular oil baffle plate 11 is provided. The rotating rod 12 is fixed to the rotating barrel cover 8. The gear lever is fixed to the fixed barrel cover 6. The gear lever cooperates with the rotating rod 12.

[0022] In this embodiment, refer to the attached Figure 2-7 The fixed cylinder cover 6 is made of steel pipe, with the external dimensions of ￠273×￠260×100×13 mm, the external dimensions of the front flange are ￠350×￠274×25 mm, the rear end external thread 7 is a 60° pipe thread, and the length of the external thread is 40 mm;

[0023] The rotating barrel cover 8 is made of steel pipe, with the dimensions of ￠273×￠260×200×13 mm. The inner thread 9 at the front end is a 60° pipe thread with an inner thread length of 40 mm. A portion of the "semicircle" is cut off 1 cm below the center dividing surface of the rear rotating barrel cover 8, with a length of 100 mm. After cutting, the dust shielding edge 17 formed on the upper half of the rotating barrel cover 8, which is larger than the semicircle, has a length of 100 mm. The open hole formed on the lower half of the rotating barrel cover 8 is welded and blocked with a semicircular steel plate of ￠260×6 mm with a semicircular height of 120 mm to form an oil baffle 11. The dust shielding edge 17 has two semicircular holes cut symmetrically at the rear end. That is, the size of the groove 10 for hanging the oil drum is ￠12 mm.

[0024] The rotating rod 12 is made by cutting ￠16×200 mm round steel;

[0025] The left stopper 14 and the right stopper 13 are both "L" shaped and made of ￠12×100×40mm round steel. The short side of the "L" shape is 40mm. The two stoppers are welded 6mm above the center position of the left and right sides of the rear end of the fixed barrel cover 6 and 50mm away from the front end of the fixed barrel cover 6;

[0026] The scraper 15 is made by welding ￠16×300 mm round steel and 50×40×3 mm thin steel sheet;

[0027] The oil receiving barrel 16 is a small water barrel purchased from outside.

[0028] During installation, first connect the front end flange of the fixed barrel cover 6 with the flange of the bearing seat, then rotate the inner thread 9 of the rotating barrel cover 8 with the outer thread 7 of the fixed barrel cover 6, and rotate it to the middle position of the outer thread 7, then weld the rotating rod 12 on the right side and the middle position of the front end of the rotating barrel cover 8, and weld the left baffle rod 14 and the right baffle rod 13 slightly above the left and right middle positions of the rear end of the fixed barrel cover 6.

[0029] During use, the inspection and maintenance personnel observe the use conditions of the furnace bottom roller bearing 3 and the lubricating oil 18 through the channel formed by the upper semicircle in the rotating barrel cover 8 and the upper semicircle in the fixed barrel cover 6, that is, the direction A in the attached figure. If there is no abnormality, continue to check the next furnace bottom roller bearing; if there is an abnormality, the rotating barrel cover 8 is rotated 180° to the left by rotating the rod 12, that is, the rotating rod 12 is rotated to the bottom of the left stopper 14 of the fixed barrel cover 6 and contacts the left stopper. At this time, the rear end of the rotating barrel cover 8 is larger than the semicircular dust shielding edge 17, and the rotating barrel cover 8 is The upper part rotates to the lower part, and then the oil collecting barrel 16 is hung in the groove 10 at the rear end of the dust shielding edge, and then the scraper 15 is used to pass through the semicircular dust shielding edge 17 of the rotating drum cover 8 after rotation, and enter the fixed drum cover 6, that is, the A direction in the accompanying drawing, to scrape out the "excess" grease in the fixed drum cover 6 and the "aged" grease 18 in the bearing part into the oil collecting barrel 16, and the online inspection and maintenance of the furnace bottom roller bearing 3 is quickly completed, which solves the problems of time-consuming and labor-intensive inspection, environmental pollution and failure to timely detect damaged furnace bottom roller bearings.

Claims

1. A heating furnace bottom roller bearing cover, characterized in that: The invention comprises a fixed barrel cover (6), a rotating barrel cover (8), a semicircular oil baffle plate (11), a rotating rod (12) and a stop rod, wherein the fixed barrel cover (6) is fixed to a furnace bottom roller bearing seat via a flange, one end of the rotating barrel cover (8) is connected to the fixed barrel cover (6), the other end of the rotating barrel cover (8) is cut into a semicircle and provided with a semicircular oil baffle plate (11), the rotating rod (12) is fixed to the rotating barrel cover (8), the stop rod is fixed to the fixed barrel cover (6), and the stop rod cooperates with the rotating rod (12).

2. The outer cover of the bearing of the bottom roller of a heating furnace according to claim 1, characterized in that: The shift lever is L-shaped and matches the rotating rod (12).

3. The outer cover of the bearing of the bottom roller of a heating furnace according to claim 2, characterized in that: The gear lever comprises a right gear lever (13) and a left gear lever (14), and the right gear lever (13) and the left gear lever (14) are symmetrically fixed on two radial sides of the fixed cylinder cover (6).

4. The outer cover of the bearing of the bottom roller of a heating furnace according to claim 1, characterized in that: One end of the rotating barrel cover (8) connected to the fixed barrel cover (6) is provided with an inner thread (9), and the fixed barrel cover (6) is provided with an outer thread (7) matching the inner thread (9).

5. The outer cover of the bearing of the bottom roller of a heating furnace according to claim 1, characterized in that: One end of the rotating drum cover (8) cut into a semicircle is provided with a groove (10) for hanging an oil drum.

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