Quenching and cooling device used after steel rail forging and pressing

Abstract

The utility model discloses a quenching cooling device after steel rail forging, which relates to the technical field of steel rail processing and comprises a cooling box, driving mechanisms are arranged at two ends of the cooling box, a supporting mechanism is arranged in the cooling box, and a U-shaped air cooling frame is mounted at the top of the cooling box through a telescopic cylinder. The bottom of the cooling box is provided with a flat plate air cooling frame through a two-way threaded rod, a sliding block and a vertical rod, the two-way threaded rod is driven by a gear motor, the top of the cooling box is provided with a cold air channel and a refrigeration box, the two ends of the cooling box are provided with gas collecting hoods, the U-shaped air cooling frame and the flat plate air cooling frame communicate with the cold air channel, and the gas collecting hoods communicate with the air inlet end of the refrigeration box through recovery pipes. The air outlet end of the refrigeration box communicates with the air inlet end of the cold air channel. The supporting mechanism can ascend and descend, steel rails are prevented from falling off due to discontinuity of the conveying device, meanwhile, the cooling effect of the bottoms of the steel rails is guaranteed, the cooling space of the steel rails is more concentrated, the cooling effect is better, air in the device can be recycled, and resource waste can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of rail processing technology, specifically a quenching and cooling device for rails after forging. Background Technology

[0002] After high-temperature forging, the steel rails are already at a high temperature and generally require rapid cooling to significantly improve their strength. Air cooling is currently a relatively effective method. However, existing air cooling devices suffer from uneven air distribution on the rails, resulting in inconsistent cooling rates across different areas. This leads to varying strengths at different points after cooling, compromising the overall strength of the rail. Consequently, substandard strength at certain locations can pose safety hazards during use, reducing the overall quality of rail production.

[0003] To address the above issues, utility model patent CN215799719U discloses a quenching and cooling device for forged steel rails. This device uses rollers at both ends of a cooling channel to drive the rail, ensuring that the portion of the rail inside the cooling channel can more fully integrate with the cooling air, thus guaranteeing consistent cooling rates across the rail. However, because only one end of the rail contacts the rollers when it first enters the cooling channel, the rail may detach from the rollers. Furthermore, this device easily wastes cooling air resources, increasing production costs. Utility Model Content

[0004] The purpose of this invention is to provide a quenching and cooling device for steel rails after forging, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A quenching and cooling device for forged steel rails includes a cooling box with a thickened bottom and a through-hole design. Drive mechanisms are located at both ends of the cooling box. A support mechanism is installed inside the cooling box, comprising multiple sets of electric lifting rods fixedly mounted on the bottom wall of the cooling box. The extended ends of the electric lifting rods on the same side are jointly fixedly mounted with mounting bars. Multiple transmission rollers are rotatably mounted on the inner sides of the two mounting bars. Two telescopic cylinders are fixedly mounted on the top of the cooling box, with their extended ends penetrating the top wall of the cooling box and fixedly connected to the top of a U-shaped air-cooling frame. Multiple first air outlets are evenly distributed on the left, right, and top walls inside the U-shaped air-cooling frame. Two mounting cavities are laterally arranged inside the bottom wall of the cooling box, each containing a rotatable mounting plate. The cooling box is equipped with a double-threaded rod, with sliding blocks slidably mounted on both ends of the thread. A vertical rod is fixedly mounted on the top of each sliding block. The bottom wall of the cooling box has a sliding groove for the vertical rod to move. A flat air-cooling frame is mounted on the top of the two vertical rods located on the left and right sides of the cooling box. The top of the flat air-cooling frame has multiple second air outlets. One end of each of the two double-threaded rods passes through the side wall of the cooling box and is fixedly connected to a pulley. The two pulleys are connected by a drive belt. A mounting box is fixedly mounted on the side wall of the cooling box. The pulleys and drive belt are located inside the mounting box. A geared motor is fixedly mounted on the side wall of the mounting box. The output shaft of the geared motor passes through the side wall of the mounting box and is fixedly connected to the central shaft of one of the pulleys.

[0007] As a further embodiment of this utility model: the drive mechanism includes side plates fixedly installed on the left and right side walls of the cooling box, a rotating shaft rotatably installed between the two side plates, a rolling wheel fixedly sleeved on the rotating shaft, and a drive motor fixedly installed on the outer side wall of one of the side plates, the output shaft of the drive motor passing through the side plate and fixedly connected to the rotating shaft.

[0008] As a further improvement of this utility model: a cold air channel is provided on the top of the cooling box, which is connected to an external air supply system. Both the U-shaped air-cooling frame and the flat air-cooling frame are connected to the cold air channel through flexible air pipes, and the interiors of the U-shaped air-cooling frame and the flat air-cooling frame are respectively connected to the first air outlet and the second air outlet.

[0009] As a further improvement of this utility model: a refrigeration box is provided on the top of the cooling box, and a fan and a refrigerator are provided inside the refrigeration box. Gas collection hoods are provided above both ends of the cooling box. The gas collection hoods are connected to the air inlet of the refrigeration box through a recovery pipe, and the air outlet of the refrigeration box is connected to the air inlet of the cold air channel.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. By setting up a support mechanism inside the cooling box, the electric lifting rod can be activated when the rail just enters the cooling box, causing the installation bar to drive the transmission roller to rise to the same level as the rolling wheel. This, together with the rolling wheel, allows for better guidance and movement of the rail, preventing the rail from falling off due to discontinuity in the conveying device. When one end of the rail reaches the top of the rolling wheel on the other side, the electric lifting rod drives the installation bar and transmission roller to descend, ensuring the cooling effect at the bottom of the rail.

[0012] 2. The geared motor drives one of the pulleys to rotate, which in turn drives the connected bidirectional threaded rod to rotate. At the same time, this pulley drives the other pulley to rotate via the transmission belt, which in turn drives the other bidirectional threaded rod to rotate. This allows the sliding blocks in the two mounting cavities to move the vertical rod and the flat air-cooling frame towards each other, so that the flat air-cooling frame moves to the bottom of the rail. The second air outlet evenly blows air to cool the bottom of the rail. Combined with the U-shaped air-cooling frame, it blows air to cool the top and left and right sides of the rail, which can make the cooling space of the rail more concentrated and the cooling effect better, and reduce the consumption and waste of cold air to a certain extent.

[0013] 3. The gas overflowing from both ends of the cooling box can be drawn into the refrigeration box through the gas collection hood and recovery pipe by the fan. After being refrigerated again by the refrigeration box, it enters the cold air channel and is blown out again from the U-shaped air-cooling frame and the flat air-cooling frame. This realizes the recycling of the air inside the device and further helps to reduce the waste of resources and reduce production costs to a certain extent. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model.

[0015] Figure 2 This is a schematic diagram of the overall structure during cooling in Embodiment 1 of this utility model.

[0016] Figure 3 This is a schematic diagram of the structure of the flat air-cooling frame in Embodiment 1 of this utility model.

[0017] Figure 4 This is a schematic diagram of the overall structure of the support mechanism in Embodiment 1 of this utility model.

[0018] Figure 5 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model.

[0019] In the diagram: 1. Cooling box; 2. Side plate; 3. Rotating shaft; 4. Rolling wheel; 5. Drive motor; 6. Support mechanism; 61. Electric lifting rod; 62. Mounting strip; 63. Transmission roller; 7. Telescopic cylinder; 8. U-shaped air-cooling frame; 9. First air outlet; 10. Bidirectional threaded rod; 11. Sliding block; 12. Vertical rod; 13. Sliding groove; 14. Flat air-cooling frame; 15. Second air outlet; 16. Pulley; 17. Transmission belt; 18. Mounting box; 19. Gear motor; 20. Cold air passage; 21. Soft air pipe; 22. Refrigeration box; 23. Gas collection hood; 24. Recovery pipe. Detailed Implementation

[0020] The following embodiments will be described in detail with reference to the accompanying drawings. In the drawings and description, similar or identical parts are referred to by the same reference numerals. Furthermore, in practical applications, the shape, thickness, or height of each component may be enlarged or reduced. The embodiments listed in this utility model are merely illustrative and not intended to limit the scope of the utility model. Any obvious modifications or alterations made to this utility model do not depart from its spirit and scope.

[0021] Example 1

[0022] Please see Figures 1-4 In this embodiment of the invention, a quenching and cooling device for forged steel rails includes a cooling box 1. The cooling box 1 has a thickened bottom and is open from front to back. Both ends of the cooling box 1 are equipped with driving mechanisms. Each driving mechanism includes side plates 2 fixedly installed on the left and right side walls of the cooling box 1. A rotating shaft 3 is rotatably installed between the two side plates 2, and a rolling wheel 4 is fixedly sleeved on the rotating shaft 3. A drive motor 5 is fixedly installed on the outer side wall of one of the side plates 2. The output shaft of the drive motor 5 passes through the side plate 2 and is fixedly connected to the rotating shaft 3. By starting the drive motor 5, the rotating shaft 3 is rotated, thereby rotating the rolling wheel 4, allowing the two driving mechanisms to drive the steel rail through the interior of the cooling box 1.

[0023] The cooling box 1 is equipped with a support mechanism 6, which includes multiple sets of electric lifting rods 61 fixedly installed on the bottom wall inside the cooling box 1. The extended ends of the electric lifting rods 61 on the same side are jointly fixedly installed with mounting strips 62. Multiple transmission rollers 63 are rotatably installed on the inner sides of two mounting strips 62. When the rail just enters the cooling box 1, activating the electric lifting rods 61 causes the mounting strips 62 to drive the transmission rollers 63 to rise to the same level as the rolling wheel 4. This, in conjunction with the rolling wheel 4, allows for better guidance and movement of the rail, preventing the rail from falling off due to discontinuity in the conveying device. When one end of the rail reaches the upper end of the rolling wheel 4 on the other side, the electric lifting rods 61 drive the mounting strips 62 and transmission rollers 63 to descend, ensuring effective cooling of the bottom of the rail.

[0024] Two telescopic cylinders 7 are fixedly installed on the top of the cooling box 1. The extended ends of the telescopic cylinders 7 penetrate the top wall of the cooling box 1 and are fixedly connected to the top of the U-shaped air-cooling frame 8. Multiple first air outlets 9 are evenly distributed on the left, right, and top walls of the U-shaped air-cooling frame 8. By moving the U-shaped air-cooling frame 8 up and down through the extended ends of the telescopic cylinders 7, the U-shaped air-cooling frame 8 can be lowered to cover the steel rail, and the first air outlets 9 can evenly blow air to cool the top and left and right sides of the steel rail.

[0025] The cooling box 1 has two horizontally arranged mounting cavities inside its bottom wall. A bidirectional threaded rod 10 is rotatably mounted inside each mounting cavity. Sliding blocks 11 are slidably mounted on both ends of the threads of the bidirectional threaded rod 10. A vertical rod 12 is fixedly mounted on the top of each sliding block 11. The bottom wall of the cooling box 1 has sliding grooves 13 for the vertical rods 12 to move. A flat air-cooling frame 14 is mounted on the top of each of the two vertical rods 12 located on the left and right sides of the cooling box 1. Multiple second air outlets 15 are provided on the top of the flat air-cooling frame 14. One end of each of the two bidirectional threaded rods 10 passes through the side wall of the cooling box 1 and is fixedly connected to a pulley 16. The two pulleys 16 are connected by a transmission belt 17. A mounting box 18 is fixedly mounted on the side wall of the cooling box 1. The pulleys 16 and the transmission belt 17 are located inside the mounting box 18. A reduction motor 19 is fixedly mounted on the side wall of the mounting box 18. The output shaft of the reduction motor 19 passes through the side wall of the mounting box 18 and is fixedly connected to the central shaft of one of the pulleys 16. The geared motor 19 drives one of the pulleys 16 to rotate, which in turn drives the connected bidirectional threaded rod 10 to rotate. Simultaneously, this pulley 16 drives the other pulley 16 to rotate via the transmission belt 17, thereby driving the other bidirectional threaded rod 10 to rotate. This causes the sliding blocks 11 in the two mounting cavities to move the vertical rod 12 and the flat air-cooling frame 14 towards each other, allowing the flat air-cooling frame 14 to move to the bottom of the rail. The second air outlet 15 then evenly blows air to cool the bottom of the rail. Combined with the U-shaped air-cooling frame 8, which blows air to cool the top and left and right sides of the rail, the cooling space of the rail is more concentrated, the cooling effect is better, and the consumption and waste of cold air are reduced to a certain extent.

[0026] The top of the cooling box 1 is provided with a cold air channel 20, which is connected to an external air supply system. The U-shaped air-cooling frame 8 and the flat air-cooling frame 14 are both connected to the cold air channel 20 through a flexible air pipe 21, and the interior of the U-shaped air-cooling frame 8 and the flat air-cooling frame 14 are respectively connected to the first air outlet 9 and the second air outlet 15.

[0027] Example 2

[0028] Please see Figure 5Based on Embodiment 1, the cooling box 1 is equipped with a refrigeration box 22 on top. The refrigeration box 22 contains a fan and a cooler. Gas collection hoods 23 are located above both ends of the cooling box 1. These hoods 23 are connected to the air inlet of the refrigeration box 22 via a recovery pipe 24, and the air outlet of the refrigeration box 22 is connected to the air inlet of the cold air channel 20. The fan draws the gas overflowing from both ends of the cooling box 1 into the refrigeration box 22 via the gas collection hoods 23 and the recovery pipe 24. After being repeatedly cooled by the refrigeration box 22, the gas enters the cold air channel 20 and is blown out again from the U-shaped air-cooling frame 8 and the flat air-cooling frame 14. This achieves the recycling of air within the device, further reducing resource waste and lowering production costs to some extent.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims in the field of rail processing technology.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A quenching and cooling device for steel rails after forging, comprising a cooling box (1), characterized in that, The bottom of the cooling box (1) is thickened and extends through the front and back. Both ends of the cooling box (1) are equipped with driving mechanisms. A support mechanism (6) is provided inside the cooling box (1). The support mechanism (6) includes multiple sets of electric lifting rods (61) fixedly installed on the bottom wall inside the cooling box (1). The protruding ends of the electric lifting rods (61) on the same side are fixedly installed with mounting strips (62). Multiple transmission rollers (63) are rotatably installed inside the two mounting strips (62). Two telescopic cylinders (7) are fixedly installed on the top of the cooling box (1). The protruding ends of the telescopic cylinders (7) penetrate the top wall of the cooling box (1) and are fixedly connected to the top of the U-shaped air-cooling frame (8). Multiple first air outlets (9) are evenly distributed on the left, right and top walls inside the U-shaped air-cooling frame (8). Two mounting cavities are provided laterally inside the bottom wall of the cooling box (1). A bidirectional threaded rod (10) is rotatably installed inside each mounting cavity. Both ends of the bidirectional threaded rod (10) are slidable on the two threads. A sliding block (11) is installed, and a vertical rod (12) is fixedly installed on the top of each sliding block (11). The bottom wall of the cooling box (1) is provided with a sliding groove (13) for the vertical rod (12) to move. The tops of the two vertical rods (12) located on the left and right sides of the cooling box (1) are both equipped with a flat air-cooling frame (14). The top of the flat air-cooling frame (14) is provided with multiple second air outlets (15). One end of each of the two bidirectional threaded rods (10) penetrates the side wall of the cooling box (1). A pulley (16) is fixedly connected to the cooling box (1), and the two pulleys (16) are connected by a transmission belt (17). A mounting box (18) is fixedly installed on the side wall of the cooling box (1). The pulleys (16) and the transmission belt (17) are located inside the mounting box (18). A geared motor (19) is fixedly installed on the side wall of the mounting box (18). The output shaft of the geared motor (19) passes through the side wall of the mounting box (18) and is fixedly connected to the central shaft of one of the pulleys (16).

2. The quenching and cooling device for steel rails after forging according to claim 1, characterized in that, The drive mechanism includes side plates (2) fixedly installed on the left and right side walls of the cooling box (1), a rotating shaft (3) rotatably installed between the two side plates (2), a rolling wheel (4) fixedly sleeved on the rotating shaft (3), and a drive motor (5) fixedly installed on the outer side wall of one of the side plates (2). The output shaft of the drive motor (5) passes through the side plate (2) and is fixedly connected to the rotating shaft (3).

3. The quenching and cooling device for rail forging according to claim 2, characterized in that, The cooling box (1) is provided with a cold air channel (20) at the top. The cold air channel (20) is connected to the external air supply system. The U-shaped air cooling rack (8) and the flat air cooling rack (14) are both connected to the cold air channel (20) through a flexible air pipe (21). The interior of the U-shaped air cooling rack (8) and the flat air cooling rack (14) are respectively connected to the first air outlet (9) and the second air outlet (15).

4. The quenching and cooling device for rail forging according to claim 3, characterized in that, The cooling box (1) is equipped with a refrigeration box (22) on top. The refrigeration box (22) is equipped with a fan and a refrigerator. The cooling box (1) is equipped with a gas collection hood (23) above both ends. The gas collection hood (23) is connected to the air inlet of the refrigeration box (22) through a recovery pipe (24). The air outlet of the refrigeration box (22) is connected to the air inlet of the cold air channel (20).

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