A buffer device suitable for a steel billet heating furnace
By improving the structure of the buffer device in the steel billet heating furnace and adopting a combination design of high-strength buffer rod and cooling water tank, the problems of easy damage and difficult maintenance of the existing device in high-temperature environment have been solved, and a buffering effect that is easy to maintain and safe and reliable has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUKUN STEEL
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-31
AI Technical Summary
The buffer devices of existing steel billet heating furnaces are difficult to maintain and replace, and are easily damaged in high-temperature environments, posing safety risks and economic losses.
It adopts a combined structure of support base, buffer box, buffer rod, support plate, rear support, front support, upper crossbeam, cooling water tank and refractory fiber. The buffer rod is made of 230mm square billet material. The cooling water tank provides effective cooling. The rear support and front support provide support and limit the degree of freedom of the buffer rod. The insert plate and shoulder further limit the vertical movement. The overall structure is simple and easy to maintain.
It achieves high strength and impact resistance of the buffer device, extends its service life, simplifies the replacement process of the buffer bar, avoids damage and safety risks in high-temperature environments, and improves the convenience of maintenance.
Smart Images
Figure CN224580694U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of metallurgical equipment technology, and further to the field of heating furnace equipment technology. Specifically, it relates to a buffer device suitable for steel billet heating furnaces that is simple in structure, easy to maintain, and reliable in operation. Background Technology
[0002] A billet heating furnace is a device in a steel rolling mill used to heat steel billets to a suitable temperature for subsequent heat treatment or processing. The furnace is equipped with a buffer baffle. When the billet enters or exits the furnace and reaches the head of the baffle, the conveyor rollers stop. At this point, the head or tail of the billet is positioned inside the furnace, preventing it from tilting or deviating from the center and rubbing against the furnace wall, which could cause damage and significant economic losses. The head of the buffer baffle is located inside the furnace and is constantly exposed to high temperatures and impacts from the billet. Currently, the buffer rod of the baffle is generally made of thick-walled steel pipes welded together with steel plates, while the tail uses a disc spring as a buffer component. The buffer rod is supported and fixed by a sliding bearing seat. This structure has the following shortcomings:
[0003] 1. When the buffer rod is damaged, the furnace needs to be shut down and manual personnel need to enter the furnace for repair. The repair time is long and the working environment is poor.
[0004] 2. The buffer rod is difficult to replace and maintain.
[0005] 3. Due to the impact of the billet and the high temperature inside the furnace, the welded parts of the end baffle are prone to aging, detachment, and fall off, which will damage the cooling water circuit inside the pipe and cause the cooling water to leak into the heating furnace.
[0006] 4. Handling the steel jamming at the baffle is time-consuming and labor-intensive, and poses a significant safety risk.
[0007] Therefore, the key to solving this problem is to research and develop a buffer device that is simple in structure, easy to maintain, and reliable in operation, suitable for steel billet heating furnaces. Utility Model Content
[0008] The purpose of this utility model is to provide a buffer device that is simple in structure, easy to maintain, and reliable in operation, suitable for heating furnaces for steel billets in steel rolling.
[0009] The purpose of this utility model is achieved as follows: It includes a support base, a buffer box, a buffer rod, a support plate, a rear support, a front support, an upper crossbeam, a cooling water tank, and refractory fiber. The support base is fixed to a reinforced concrete foundation with anchor bolts. Above the support base, from left to right, the buffer box, support plate, rear support, and front support are arranged sequentially. The buffer rod is mounted on the support plate, rear support, and front support. Upper crossbeams are respectively installed above the rear and front supports. The buffer rod is fixed vertically by removing the upper crossbeams, placing them on the support plate, rear support, and front support, and then reinstalling the upper crossbeams. The buffer rod can slide back and forth. The rear end of the buffer rod is connected to the buffer box via a shoulder engagement. A cooling water tank is located at the front of the buffer rod, outside the furnace wall. The front end of the buffer rod passes through the furnace wall. Refractory fiber is arranged around the square hole in the furnace wall at the front end of the buffer rod.
[0010] This utility model consists of a support base, a buffer box, a buffer rod, a support plate, a rear support, a front support, an upper crossbeam, a cooling water tank, and refractory fiber. The buffer rod is made of 230mm square billet material, resulting in high overall strength. The cooling water tank is a circulating water tank, which can effectively cool the buffer rod. The rear and front supports provide support for the buffer rod and ensure that it can slide on them. An upper crossbeam is provided on the upper part of the rear and front supports to restrict the vertical freedom of the buffer rod and prevent it from tilting. The insert plate is composed of multiple steel plates, and the number and thickness of the inserts can be adjusted as needed. A shoulder is provided on the upper part of the front end plate of the box, which can press against the rear end of the buffer rod to further restrict its vertical freedom and prevent it from tilting. A tail baffle is provided on the rear end plate of the box to provide support for the buffer rod in the event of an impact.
[0011] This utility model has high overall strength and rigidity, good impact resistance, is not easily damaged, and has a long service life. Replacing the buffer rod is very convenient and quick. When replacing the buffer rod, you only need to pull out the insert plate and buffer pad to remove the buffer rod for replacement. It does not require the long construction period of demolishing and restoring the furnace wall of the heating furnace.
[0012] This utility model has a simple structure, is easy to maintain, and is reliable in operation. It is suitable for heating furnaces for steel billets in steel rolling. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the buffer box structure of this utility model;
[0015] Figure 3 This is a schematic diagram of the original buffer device.
[0016] In the diagram: 1-support base, 2-buffer box, 21-box body, 22-tail baffle, 23-insertion plate, 24-buffer pad, 25-shoulder, 3-buffer rod, 4-support plate, 5-rear support, 6-front support, 7-upper crossbeam, 8-cooling water tank, 9-refractory fiber, 10-heating furnace wall, 11-steel billet, 12-disc spring buffer box, 13-cooling water pipe, 14-sliding bearing seat, 15-original buffer rod, 16-buffer baffle. Detailed Implementation
[0017] The present invention will be further described below with reference to the accompanying drawings, but this does not limit the present invention in any way. Any modifications made based on the teachings of the present invention shall fall within the protection scope of the present invention.
[0018] like Figures 1-3 As shown, this utility model includes a support base 1, a buffer box 2, a buffer rod 3, a support plate 4, a rear support 5, a front support 6, an upper crossbeam 7, a cooling water tank 8, and refractory fiber 9. The support base 1 is fixed to a reinforced concrete foundation by anchor bolts. The buffer box 2, support plate 4, rear support 5, and front support 6 are arranged sequentially from left to right above the support base 1. The buffer rod 3 is mounted on the support plate 4, rear support 5, and front support 6. Upper crossbeams 7 are respectively arranged on the upper parts of the rear support 5 and front support 6. The buffer rod 3 can be installed by disassembling and assembling the crossbeams 5 and 7, and can slide back and forth on the rear support 5 and front support 6. The rear end of the buffer rod 3 is connected to the buffer box 2 by a shoulder engagement. The cooling water tank 8 is located at the front of the buffer rod 3, outside the furnace wall 10 of the heating furnace. The front end of the buffer rod 3 passes through the furnace wall 10 of the heating furnace. Refractory fiber 9 is arranged around the square hole of the furnace wall 10 at the front end of the buffer rod 3.
[0019] The support base 1 is welded to the buffer box 2 and the support plate 4.
[0020] The support base 1 is bolted to the rear support 5 and the front support 6.
[0021] The upper crossbeam 7 is bolted to the rear support 5 and the front support 6.
[0022] The buffer rod 3 is made of 230mm square billet material.
[0023] The buffer rod 3 can slide on the rear support 5 and the front support 6.
[0024] The cooling water tank 8 is equipped with a circulating cooling water inlet and outlet.
[0025] The buffer box 2 includes a box body 21, a tail baffle 22, an insert plate 23, a buffer pad 24, and a shoulder 25; the tail baffle 22 is provided on the rear end plate of the box body 21; the insert plate 23, the buffer pad 24, and the insert plate 23 are arranged sequentially in the cavity of the box body 21; there are two sets of insert plates 23, and the buffer pad 24 is located between the two sets of insert plates 23; a shoulder 25 is provided on the upper part of the front end plate of the box body 21; the upper part of the box body 21 is an open structure.
[0026] The insert plate 23 is composed of multiple steel plates, each with a thickness of 10 mm to 30 mm.
[0027] The buffer pad 24 is composed of multiple rubber sheets.
[0028] The working principle and process of this utility model:
[0029] This utility model consists of a support base 1, a buffer box 2, a buffer rod 3, a support plate 4, a rear support 5, a front support 6, an upper crossbeam 7, a cooling water tank 8, and refractory fiber 9. The buffer rod 3 is made of 230mm square billet material, which has high overall strength. The cooling water tank 8 is a circulating water tank, which can effectively cool the buffer rod 3. The rear support 5 and the front support 6 provide support for the buffer rod 3 and ensure that the buffer rod 3 can slide on it. The upper part of the rear support 5 and the front support 6 is provided with an upper crossbeam 7 to restrict the vertical freedom of the buffer rod 3 and prevent the buffer rod 3 from tilting. The insert plate 23 is composed of multiple steel plates, and the number and thickness of the inserts can be adjusted as needed. The upper part of the front end plate of the box body 21 is provided with a shoulder 25, which can press against the rear end of the buffer rod 3 to further restrict the vertical freedom of the buffer rod 3 and prevent the buffer rod 3 from tilting. The rear end plate of the box body 21 is provided with a tail baffle 22 to provide support for the impact received by the buffer rod 3.
Claims
1. A buffer device suitable for a steel billet heating furnace, comprising a supporting base (1), a buffer box (2), a buffer rod (3), a supporting seat plate (4), a rear supporting seat (5), a front supporting seat (6), an upper cross beam (7), a cooling water tank (8), and a refractory fiber (9), characterized in that: The support base (1) is fixed to the reinforced concrete foundation by anchor bolts; above the support base (1), from left to right, a buffer box (2), a support plate (4), a rear support (5), and a front support (6) are arranged in sequence; the buffer rod (3) is arranged on the support plate (4), the rear support (5), and the front support (6); an upper crossbeam (7) is arranged on the upper part of the rear support (5) and the front support (6); the buffer rod (3) is placed on the support plate (4), the rear support (5), and the front support by removing the upper crossbeam (7). (6) Then install the upper crossbeam (7) and the upper crossbeam (7) to fix the buffer rod (3) on the top and bottom; the buffer rod (3) can slide back and forth; the rear end of the buffer rod (3) is connected to the buffer box (2) through a shoulder fit; a cooling water tank (8) is set in the front part of the buffer rod (3); the cooling water tank (8) is located outside the furnace wall (10) of the heating furnace; the front end of the buffer rod (3) passes through the furnace wall (10) of the heating furnace; refractory fiber (9) is set around the square hole of the front end of the buffer rod (3) and the furnace wall (10) of the heating furnace.
2. The bumper device suitable for use in a steel billet heating furnace according to claim 1, characterized in that: The support base (1) is welded to the buffer box (2) and the support plate (4).
3. The bumper device suitable for use in a steel billet heating furnace according to claim 1, characterized in that: The support base (1) is bolted to the rear support (5) and the front support (6).
4. The buffer device for a steel billet heating furnace according to claim 1, characterized in that: The upper crossbeam (7) is bolted to the rear support (5) and the front support (6).
5. The buffer device for a steel billet heating furnace according to claim 1, characterized in that: The buffer rod (3) is made of 230mm square billet material.
6. The buffer device for a steel billet heating furnace according to claim 1, characterized in that: The buffer rod (3) can slide on the rear support (5) and the front support (6).
7. The buffer device for a steel billet heating furnace according to claim 1, characterized in that: The cooling water tank (8) is provided with a circulating cooling water inlet and outlet.
8. The buffer device for a steel billet heating furnace according to claim 1, characterized in that: The buffer box (2) includes a box body (21), a tail baffle (22), a insert plate (23), a buffer pad (24), and a shoulder (25); the tail baffle (22) is provided on the rear end plate of the box body (21); the insert plate (23), the buffer pad (24), and the insert plate (23) are arranged in sequence in the cavity of the box body (21); there are two sets of insert plates (23), and the buffer pad (24) is located between the two sets of insert plates (23); a shoulder (25) is provided on the upper part of the front end plate of the box body (21); the upper part of the box body (21) is an open structure.
9. The buffer device for a steel billet heating furnace according to claim 8, characterized in that: The insert plate (23) is composed of multiple steel plates, each with a thickness of 10 mm to 30 mm.
10. The buffer device for a steel billet heating furnace according to claim 8, characterized in that: The buffer pad (24) is composed of multiple rubber plates.