Rolling mill roller way cooling device

Abstract

The utility model provides a rolling mill roller way cooling device, and belongs to the technical field of rolling mill equipment. The rolling mill roller way cooling device comprises a bearing seat, a rotating shaft and a rotating roller, the rotating shaft is rotationally connected with the bearing seat, spokes are arrayed on the rotating shaft in a circle, the outer ends of the spokes are fixedly connected with sockets, the two ends of the rotating roller are connected with the sockets at the two ends in an inserted mode respectively, cooling water channels are formed in the rotating shaft and the spokes, and the rotating shaft and the spokes are fixedly connected with the rotating roller. The inner end of the socket is provided with a nozzle communicated with the cooling water channel. In the application, the cooling water which is just input and has lower temperature is used for cooling the spokes, so that the heat transfer is effectively blocked, the bearing is further protected, the cooling water enters the rotating roller after being preliminarily heated by the spokes and the socket to cool the rotating roller, and the condition that the physical characteristics of the rotating roller are changed due to overlarge temperature difference is also avoided.

Description

Technical Field

[0001] This application relates to the technical field of rolling mill equipment, and more particularly, to a rolling mill roller table cooling device. Background Art

[0002] The roller table is the main equipment for transporting rolled pieces in a rolling mill workshop. The rolled pieces taken out from the heating furnace will be transported on the roller table through conveyor. When the rolled pieces in a high-temperature state move on the roller table, the temperature will affect the roller table, especially the bearings at both ends of the rotating roller, resulting in poor rotation of the rotating roller and affecting the transmission of the rolled pieces.

[0003] In this regard, Chinese Patent Application No. CN202120662438.1 discloses a cooling and temperature reduction device for the roller table behind a roughing mill. This solution mainly has an external cooling device, which can cool the bearing housing through the external cooling device, and then cool the bearing. It can also cool the rotating shaft, thereby reducing the temperature of the roller bearing, extending the service life of the bearing and avoiding bearing seizure, and preventing situations such as roller jamming and non-rotation. There is also an internal cooling device, which cools the rotating shaft through the internal cooling device. The design is reasonable, the structure is simple, and the cooling effect is good. Through the internal cooling device and the external cooling device, the accident rate of bearing seizure and damage caused by too high temperature of the bearing housing is reduced.

[0004] However, during the process of implementing the technical solutions in the embodiments of this application by the utility model applicant of this application, it is found that the above technology has at least the following technical problems:

[0005] There are two sets of internal and external cooling devices, which are complex in structure and high in cost. Utility Model Content

[0006] To make up for the above deficiencies, this application provides a rolling mill roller table cooling device, aiming to improve the problems mentioned in the above background art.

[0007] The embodiment of this application provides a rolling mill roller table cooling device, including a bearing housing, a rotating shaft and a rotating roller. The rotating shaft is rotatably connected to the bearing housing. The rotating shaft is arrayed with spokes in a circle. The outer ends of the spokes are fixedly connected with sockets. Both ends of the rotating roller are respectively inserted into the sockets at both ends. Cooling water channels are arranged on both the rotating shaft and the spokes. Nozzles are opened at the inner ends of the sockets and communicated with the cooling water channels.

[0008] In a specific implementation, the rotating shaft is detachably connected with a limiting ring, and the limiting rings are arranged at both ends of the bearing housing.

[0009] In a specific implementation, screws are arranged on the limiting ring and screwed with the rotating shaft.

[0010] In the above implementation process, the rotating shaft is circumferentially fixed on the bearing seat through a flat key and axially fixed by two limiting rings, enabling the rotating shaft to move axially so that the roller can be removed from the socket for maintenance or replacement.

[0011] In a specific implementation, a rotary joint is provided at the outer end of the rotating shaft.

[0012] In the above implementation process, the rotary joint is used to externally connect a hose to communicate with the hollow rotating shaft. It should be noted that the inner end of the rotary joint is connected to the rotating shaft, and the outer end of the rotary joint needs to be fixed on the bearing seat or other structures to prevent the rotating shaft from rotating with the hose and causing the hose to twist.

[0013] In a specific implementation, a limiting disk is provided on the socket, and the end face of the roller abuts against the limiting disk.

[0014] In the above implementation process, the limiting disk is used to axially fix the roller. In this embodiment, anti-slip threads are provided on the socket so that the roller and the socket can be inserted and fixed.

[0015] In a specific implementation, the spoke is in the shape of a blade and has a certain inclination angle.

[0016] In the above implementation process, when the spoke rotates, external air can be introduced into the roller from one end, and the water vapor evaporated inside can be discharged from the other end, which helps to discharge a large amount of heat.

[0017] In a specific implementation, spiral blades are provided on the inner wall of the roller.

[0018] In the above implementation process, the spiral blades are used to push the cooling water in the center towards both ends for easy discharge. The spiral blades also increase the contact area between the cooling water and the roller, further improving the heat dissipation effect.

[0019] In a specific implementation, a water trough is provided below the opening at the outer end of the socket.

[0020] In the above implementation process, the cooling water in the roller is pushed towards both ends by the spiral blades of the water cup, discharged from the spokes, and falls into the water trough below for recycling.

[0021] Compared with the prior art, the beneficial effects of this application are as follows: The relatively low-temperature cooling water just input is used to dissipate heat from the spokes, effectively blocking heat transfer, thereby protecting the bearing. After the cooling water is initially heated by the spokes and the socket, it then enters the inside of the roller to dissipate heat from the roller, also avoiding the situation where the physical properties of the roller change due to excessive temperature difference. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of a rolling mill roller table cooling device provided by an embodiment of the present application;

[0024] Figure 2 It is a schematic diagram of the connection relationship between a socket and a rotating shaft provided by an embodiment of the present application;

[0025] Figure 3 It is a schematic diagram of the connection relationship between a spiral blade and a rotating roller provided by an embodiment of the present application.

[0026] In the figure: 10 - bearing seat; 20 - rotating shaft; 30 - rotating roller; 40 - spoke; 50 - socket; 60 - nozzle; 70 - limiting ring; 80 - screw; 90 - rotary joint; 100 - limiting disc; 110 - spiral blade; 120 - water tank. Specific embodiments

[0027] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application.

[0028] Please refer to Figures 1 - 3 , the present application provides a rolling mill roller table cooling device, including a bearing seat 10, a rotating shaft 20 and a rotating roller 30. The rotating shaft 20 is rotatably connected to the bearing seat 10. A plurality of spokes 40 are arranged in an array around the rotating shaft 20. The outer ends of the spokes 40 are fixedly connected with sockets 50. The two ends of the rotating roller 30 are respectively inserted into the sockets 50 at both ends. Cooling water channels are provided on both the rotating shaft 20 and the spokes 40. The inner end of the socket 50 is provided with a nozzle 60 communicating with the cooling water channel. Among them, the relatively cold cooling water just input is used to dissipate heat from the spokes 40, thereby effectively blocking heat transfer and protecting the bearing. After the cooling water is preliminarily heated by the spokes 40 and the sockets 50, it then enters the inside of the rotating roller 30 to dissipate heat from the rotating roller 30, and also avoids the situation where the physical properties of the rotating roller 30 change due to too large a temperature difference.

[0029] Please refer to Figures 1 - 3 , the rotating shaft 20 is detachably connected with a limiting ring 70, and limiting rings 70 are arranged at both ends of the bearing seat 10. Screws 80 are arranged on the limiting ring 70 and are screwed with the rotating shaft 20. The rotating shaft 20 is circumferentially fixed on the bearing seat 10 by a flat key, and is axially fixed by two limiting rings 70, so that the rotating shaft 20 can move axially, and the rotating roller 30 can be removed from the socket 50 for maintenance or replacement.

[0030] Please refer to Figures 1 - 3 , a rotary joint 90 is provided at the outer end of the rotating shaft 20. The rotary joint 90 is used to externally connect a hose so as to communicate with the hollow rotating shaft 20. It should be noted that the inner end of the rotary joint 90 is connected to the rotating shaft 20, and the outer end of the rotary joint 90 needs to be fixed on the bearing seat 10 or other structures to prevent the rotating shaft 20 from rotating with the hose, resulting in hose distortion.

[0031] Please refer to Figures 1 - 3 , a limit disk 100 is provided on the socket 50, and the end face of the roller 30 abuts against the limit disk 100. The limit disk 100 is used for axially fixing the roller 30. In this embodiment, anti-slip threads are provided on the socket 50 so that the roller 30 and the socket 50 can be inserted and fixed.

[0032] Please refer to Figures 1 - 3 , the spoke 40 is in the shape of a blade and has a certain inclination angle. When the spoke 40 rotates, it can introduce external air into the inside of the roller 30 from one end and discharge the evaporated water vapor inside from the other end, which helps to discharge a large amount of heat.

[0033] Please refer to Figures 1 - 3 , a spiral blade 110 is provided on the inner wall of the roller 30. The spiral blade 110 is used to push the cooling water in the center towards both ends for easy discharge. The spiral blade 110 also increases the contact area between the cooling water and the roller 30, further improving the heat dissipation effect.

[0034] Please refer to Figures 1 - 3 , a water tank 120 is provided below the outer end opening of the socket 50. The water cup spiral blade 110 in the roller 30 is pushed towards both ends, discharged from the spoke 40, and falls into the water tank 120 below for recycling and reuse.

[0035] The working principle of this rolling mill roller cooling device is as follows: The externally placed hose enters from the rotating shafts 20 at both ends through the rotary joint 90, then passes through the spokes 40 and enters the turntable, and then sprays water towards the center of the roller 30 through the nozzle 60. Then the cooling water accumulates in the central area of the roller 30. As the roller 30 rotates, the internal spiral blade 110 discharges the water towards both ends to dissipate heat from the roller 30. The spiral blade 110 also increases the contact area between the cooling water and the roller 30, further improving the heat dissipation effect. The cooling water passes through the spokes 40 and falls into the water tank 120 below for recycling and reuse. Since the spoke 40 is the main channel for heat transfer between the roller 30 and the bearing seat 10, the just input low-temperature cooling water is used to dissipate heat from the spoke 40, thus effectively blocking heat transfer and protecting the bearing. After the cooling water is initially heated by the spokes 40 and the socket 50, it then enters the inside of the roller 30 to dissipate heat from the roller 30, and also avoids the situation where the physical properties of the roller 30 change due to excessive temperature difference.

[0036] The above are only the embodiments of the present application and are not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various changes and modifications. Any modification, improvement or equivalent replacement made within the spirit and principle of the present application shall be included within the protection scope of the present application. It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

Claims

1. A rolling mill roller cooling device, characterized in that: The invention comprises a bearing seat (10), a rotating shaft (20) and a rotating roller (30), wherein the rotating shaft (20) is rotatably connected to the bearing seat (10), the rotating shaft (20) is provided with spokes (40) in an array around the rotating shaft (20), the outer ends of the spokes (40) are fixedly connected with sockets (50), the two ends of the rotating roller (30) are respectively plugged into the sockets (50) at the two ends, the rotating shaft (20) and the spokes (40) are both provided with cooling water channels, and the inner end of the socket (50) is provided with a nozzle (60) which is connected with the cooling water channel.

2. A rolling mill roller cooling device according to claim 1, characterized in that: The rotating shaft (20) is detachably connected to a limiting ring (70), and the limiting rings (70) are provided at both ends of the bearing seat (10).

3. A rolling mill roller cooling device according to claim 2, characterized in that: The limiting ring (70) is provided with a screw (80) which is threadedly connected to the rotating shaft (20).

4. A rolling mill roller cooling device according to claim 3, characterized in that: A rotating joint (90) is provided at the outer end of the rotating shaft (20).

5. A rolling mill roller cooling device according to claim 4, characterized in that: A limiting disk (100) is provided on the socket (50), and the end surface of the rotating roller (30) is pressed against the limiting disk (100).

6. A rolling mill roller cooling device according to claim 5, characterized in that: The spokes (40) are blade-shaped and have a certain inclination angle.

7. A rolling mill roller cooling device according to claim 6, characterized in that: The inner wall of the rotating roller (30) is provided with a spiral blade (110).

8. A rolling mill roller cooling device according to claim 7, characterized in that: A water tank (120) is provided below the opening of the outer end of the socket (50).

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