Aluminum hot rolling mill cylinder disassembling trolley axle device

Abstract

The utility model discloses a cylinder dismounting trolley axle device of an aluminum hot rolling mill, which belongs to the technical field of aluminum processing hot rolling and comprises an axle, two ends of the axle are in a multi-step shape and are rotatably connected with a wheel shell, and an annular bulge is arranged on the outer edge of one end of the wheel shell close to the middle of the axle. The sealing device has the advantages of being simple in structure, reliable in sealing, convenient to install and overhaul, low in failure rate and safe and reliable in operation.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum processing hot rolling, and specifically refers to a wheel shaft device of a cylinder removing trolley for an aluminum hot rolling mill. Background Art

[0002] The screw-down cylinder of a single-stand double-coiling aluminum hot rolling mill is a key device of the aluminum hot rolling mill. It is installed inside the rolling mill, straddling the rolling mill housing, and is used to control the thickness accuracy of the rolled aluminum plate. Due to the long working hours and high temperature inside the machine, the seals of the screw-down cylinder need to be replaced regularly. The traditional maintenance and replacement method is for maintenance workers to disassemble and replace inside the rolling mill. Due to the narrow space inside the machine, fixed partitions need to be erected and a chain block is used for hoisting, which is time-consuming and laborious, and has a high safety risk. It takes 4 working days to complete one replacement. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is the technical problem mentioned in the above background art, and a wheel shaft device of a cylinder removing trolley for an aluminum hot rolling mill is provided to facilitate the maintenance of the screw-down cylinder.

[0004] According to the content of the utility model, the technical solution provided by the utility model is: a wheel shaft device of a cylinder removing trolley for an aluminum hot rolling mill, including a wheel shaft. Both ends of the wheel shaft are multi-stepped and rotatably connected with wheel hubs. An annular protrusion is provided on the outer edge of one end of the wheel hub close to the middle of the wheel shaft.

[0005] In some embodiments, the middle part of the wheel shaft is a cylinder, and it extends towards both ends as a first stepped portion and a second stepped portion in sequence. The wheel hub is rotatably connected with the second stepped portion.

[0006] In some embodiments, inside the wheel hub, a third stepped portion and a fourth stepped portion are provided in sequence from one end of the annular protrusion to the other end. The fourth stepped portion is rotatably connected with the wheel shaft.

[0007] In some embodiments, a first annular groove is provided on the second stepped portion, and a second annular groove is provided on the fourth stepped portion. The vertical distance from the first annular groove to the first step is equal to the vertical distance from the second annular groove to the third step.

[0008] In some embodiments, a bearing is sleeved on the outer periphery of the second stepped portion, the outer periphery of the bearing abuts inside the fourth step, a first elastic retaining ring is installed in the first annular groove, a second elastic retaining ring is installed in the second annular groove, the first elastic retaining ring and the second elastic retaining ring abut on one side of the bearing, and the other side of the bearing abuts on the side wall of the first step.

[0009] In some embodiments, one side of the bearing abuts on the side wall of the third step.

[0010] In some embodiments, the wheel shaft is made of 35# steel, formed by turning after quenching and tempering treatment, and the edge is chamfered at 2*45°.

[0011] In some embodiments, the axle is made of 45# steel, machined into shape by turning after quenching and tempering treatment, and the edge is chamfered at 2*45°.

[0012] In some embodiments, the wheel hub is made of 35# steel, machined into shape by turning after quenching and tempering treatment, and the edge is chamfered at 2*45°.

[0013] In some embodiments, the wheel hub is made of 45# steel, machined into shape by turning after quenching and tempering treatment, and the edge is chamfered at 2*45°.

[0014] The advantages of the present utility model compared with the prior art are as follows: This device can be assembled into a simple trolley. When maintenance is required, the pressing cylinder is lifted and then placed on the trolley with this axle, and then the trolley and the pressing cylinder are pulled out of the rolling mill together.

[0015] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view schematic diagram of the axle device in the embodiment of the present utility model;

[0017] Figure 2 For Figure 1 the schematic diagram of the axle part shown in

[0018] Figure 3 For Figure 1 the schematic diagram of the wheel hub part shown in

[0019] In the drawings: 1. Second elastic retaining ring; 2. Bearing; 3. First elastic retaining ring; 4. Wheel hub; 41. Third stepped portion; 42. Fourth stepped portion; 43. Second annular groove; 44. Annular protrusion; 5. Axle; 51. First stepped portion; 52. Second stepped portion; 53. First annular groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following further elaborates on the present utility model in detail.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model but are not used to limit the scope of the present utility model.

[0022] Combined with Figure 1 、 Figure 2As shown in the figure, an axle device for a cylinder-removing trolley of an aluminum hot rolling mill includes an axle 5 and a wheel hub 4. The middle part of the axle 5 is a cylinder, and extending towards both ends are a first stepped portion 51 and a second stepped portion 52 in sequence. The wheel hub 4 is rotatably connected to the second stepped portion 52 through a bearing 2.

[0023] Combined with Figure 3 As shown in the figure, an annular protrusion 44 is provided on the outer edge of one end of the wheel hub 4 close to the middle part of the axle 5. Inside the wheel hub 4, a third stepped portion 41 and a fourth stepped portion 42 are provided in sequence from one end of the annular protrusion 44 to the other end. The outer circumference of the bearing 2 abuts against the fourth step.

[0024] The bearing 2 in this embodiment is a deep groove ball bearing 26210.

[0025] A first annular groove 53 is provided on the second stepped portion 52, and a first circlip 3 is installed in the first annular groove 53. A second annular groove 43 is provided on the fourth stepped portion 42, and a second circlip 1 is installed in the second annular groove 43. The vertical distance from the first annular groove 53 to the first step is equal to the vertical distance from the second annular groove 43 to the third step.

[0026] The first circlip 3 and the second circlip 1 abut against one side of the bearing 2, and the other side of the bearing 2 abuts against the side wall of the first step and the side wall of the third step.

[0027] The first circlip 3 in the embodiment is a shaft circlip, and the second circlip 1 is a hole circlip.

[0028] The axle 5 is made of 45# steel, formed by turning after quenching and tempering treatment, and the edge is chamfered at 2*45°.

[0029] The wheel hub 4 is made of 45# steel, formed by turning after quenching and tempering treatment, and the edge is chamfered at 2*45°.

[0030] When this embodiment is in use, combined with Figure 1 、 Figure 2 、 Figure 3 As shown in the figure, the axle 5 device is applicable to the disassembly of the internal pressure-up oil cylinder of a 2400mm single-stand double-coiling aluminum hot rolling mill. The axle 5 device is installed at the lower end of the trolley. By using the annular protrusion 44 on the outer circle of the wheel hub 4, the trolley for disassembling the pressure-up cylinder can move on the track of the original equipment. The annular protrusion 44 is used to limit the deviation of the wheel during movement on the track. The distance between the two annular protrusions 44 can be designed according to the distance of the track.

[0031] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A wheel axle device for an aluminum hot rolling mill cylinder removal trolley, comprising a wheel axle (5), characterized in that: Both ends of the axle (5) are multi-stepped and rotatably connected to a wheel hub (4). An annular protrusion (44) is provided on the outer edge of one end of the wheel hub (4) close to the middle of the axle (5). The middle part of the axle (5) is a cylinder, and it extends towards both ends to be a first stepped portion (51) and a second stepped portion (52) in sequence. The wheel hub (4) is rotatably connected to the second stepped portion (52). Inside the wheel hub (4), a third stepped portion (41) and a fourth stepped portion (42) are provided in sequence from one end of the annular protrusion (44) to the other end. The fourth stepped portion (42) is rotatably connected to the axle (5). A first annular groove (53) is provided on the second stepped portion (52), and a second annular groove (43) is provided on the fourth stepped portion (42). The vertical distance from the first annular groove (53) to the first stepped portion (51) is equal to the vertical distance from the second annular groove (43) to the third stepped portion (41). A bearing (2) is sleeved on the outer circumference of the second stepped portion (52). The outer circumference of the bearing (2) abuts inside the fourth stepped portion (42). A first elastic retaining ring (3) is installed in the first annular groove (53), and a second elastic retaining ring (1) is installed in the second annular groove (43). The first elastic retaining ring (3) and the second elastic retaining ring (1) abut on one side of the bearing (2), and the other side of the bearing (2) abuts on the side wall of the first stepped portion (51). One side of the bearing (2) abuts on the side wall of the third stepped portion (41).

2. The wheel axle device of the aluminum hot rolling mill cylinder removal trolley according to claim 1, wherein: The axle (5) is made of 35# steel, formed by turning after quenching and tempering treatment, and the edge is chamfered at 2*45°.

3. The wheel axle device of the aluminum hot rolling mill cylinder disassembling cart according to claim 1, characterized in that: The axle (5) is made of 45# steel, formed by turning after quenching and tempering treatment, and the edge is chamfered at 2*45°.

4. The wheel axle device of the aluminum hot rolling mill cylinder removal trolley according to claim 1, characterized in that: The wheel hub (4) is made of 35# steel, formed by turning after quenching and tempering treatment, and the edge is chamfered at 2*45°.

5. The wheel axle device of the cylinder disassembling trolley for an aluminum hot rolling mill according to claim 1, characterized in that: The wheel hub (4) is made of 45# steel, formed by turning after quenching and tempering treatment, and the edge is chamfered at 2*45°.

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