Cooling bed for reducing bending of cold heading steel

Abstract

The utility model relates to the field of steelmaking equipment, in particular to a cooling bed for reducing bending of cold heading steel, which comprises a rack, a plurality of supporting beams are arranged at the upper end of the rack at intervals, a steel pushing unit is arranged between every two adjacent supporting beams, each steel pushing unit comprises a rotating shaft, a fixed beam and a plurality of mounting seats, and the rotating shaft is fixedly provided with a plurality of cams. The cams are in one-to-one correspondence with the mounting seats, the mounting seats are provided with pin shafts rotationally connected with the cams, the fixed beam is connected with all the mounting seats, the cams are provided with reset mechanisms connected with the mounting seats, a driving mechanism connected with all the rotating shafts is arranged on the side face of the rack, and a plurality of axial flow fans are arranged on the portion, below the supporting beam, of the rack. The device has the advantages that the temperature difference of each surface of the steel billet on the cooling bed is reduced, and the bending degree of the cold forging steel billet is improved.

Description

Technical Field

[0001] The utility model relates to the field of steelmaking equipment, in particular to a cooling bed for reducing the bending of cold heading steel. Background Art

[0002] Cold heading steel is mainly used for high-strength bolts and is a high-grade cold heading steel with special requirements. During the cooling process of alloy cold heading steel billets, there is a quality defect that the billet curvature exceeds the standard. Severely bent billets that exceed the standard cause the heating furnace to be unable to push the steel forward normally. The cooling bed is a device for cooling the billets. The longer the billets stay on the cooling bed, the more obvious the color difference of the four cross sections is. The cooling process of the ingot is affected by the cooling rate and temperature difference. Uneven temperature leads to different ratios of pearlite and bainite in the cross section. The temperature difference causes a very large difference in expansion rate, which makes it easier to bend. Therefore, it is particularly necessary to develop a cooling bed that can reduce the bending of cold heading steel, reduce the temperature difference between the various surfaces of the billet on the cooling bed, and improve the curvature of the cold heading steel billet. Summary of the invention

[0003] The utility model aims to provide a cooling bed for reducing the bending of cold heading steel, which has the advantages of reducing the temperature difference between each surface of the steel billet on the cooling bed and improving the bending degree of the cold heading steel billet.

[0004] The technical solutions adopted are as follows:

[0005] A cooling bed for reducing the bending of cold heading steel comprises a frame, a plurality of support beams are arranged at intervals on the upper end of the frame, a steel pushing unit is arranged between adjacent support beams, the steel pushing unit comprises a rotating shaft, a fixed beam and a plurality of mounting seats, a plurality of cams are fixedly arranged on the rotating shaft, the cams correspond to the mounting seats one by one, the mounting seats are provided with pins rotatably connected to the cams, the fixed beams are connected to the respective mounting seats, the cams are provided with a reset mechanism connected to the mounting seats, a driving mechanism connected to the respective rotating shafts is arranged on the side of the frame, and a plurality of axial flow fans are arranged on the frame below the support beams.

[0006] Preferably, the reset mechanism comprises a slide groove, which is arranged on the side of the cam and is concentric with the pin.

[0007] A sliding block is arranged in the sliding groove, compression springs are fixedly arranged at both ends of the sliding block, the compression springs are fixedly arranged in the sliding groove, and the mounting seat is provided with a connecting shaft connected with the sliding block.

[0008] Preferably, both ends of the fixing beam are provided with rounded corners.

[0009] Preferably, the driving mechanism comprises a transmission shaft, the transmission shaft is perpendicular to the rotating shaft, and the rotating mechanism connected to the transmission shaft,

[0010] The transmission shaft is fixedly provided with a plurality of driving gears, and the ends of the rotating shafts are provided with driven gears, and the driving gears and the driven gears are meshed one by one.

[0011] Preferably, the rotating mechanism includes a reducer and a variable frequency motor, the reducer includes an input shaft and an output shaft, the input shaft is connected to the variable frequency motor, and the output shaft is connected to the transmission shaft.

[0012] Compared with the prior art, the beneficial effects are:

[0013] The utility model uses an axial flow fan to circulate air under the cooling bed, thereby increasing the cooling speed under the steel billet, making the cooling speed under the steel billet close to the cooling speeds of several other end surfaces, thereby reducing bending. The rotating shaft drives the cam to rotate, and uses the mounting seat to push the fixed beam to move. The multiple fixed beams move synchronously to push the steel billet from the supporting beam and move it forward, thereby realizing rapid movement of the steel billet on the cooling bed, thereby reducing the temperature difference between the various surfaces of the steel billet and reducing the bending of the steel billet. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional structural schematic diagram of a cooling bed for reducing the bending of cold heading steel in the utility model.

[0015] Figure 2 yes Figure 1 The structural diagram at A in the middle,

[0016] Figure 3 This is a schematic diagram of the structure of the steel billet moving state of a cooling bed for reducing the bending of cold heading steel in the utility model.

[0017] Figure 4 This is a schematic diagram of the structure of a driving mechanism of a cooling bed for reducing the bending of cold heading steel in the utility model.

[0018] In the figure: 1, frame, 2, support beam, 3, rotating shaft, 4, fixed beam, 5, mounting seat, 6, cam, 7, pin shaft, 8, slide slot, 9, connecting shaft, 10, transmission shaft, 11, rotating mechanism, 12, driving gear, 13, driven gear, 14, axial flow fan. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with specific embodiments. Figures 1 to 4 As shown:

[0020] Embodiment 1: A cooling bed for reducing the bending of cold heading steel comprises a frame 1, a plurality of support beams 2 are arranged at intervals on the upper end of the frame 1, a steel pushing unit 3 is arranged between adjacent support beams 2, a plurality of groups of steel pushing units 3 are arranged on the frame 1, the steel pushing units 3 comprise a rotating shaft 3, a fixed beam 4 and a plurality of mounting seats 5, a plurality of cams 6 are fixedly arranged on the rotating shaft 3, the cams 6 correspond to the mounting seats 5 one by one, the mounting seats 5 are provided with pins 7 rotatably connected to the cams 6, the fixed beams 4 are connected to each mounting seat 5,

[0021] The cam 6 is provided with a reset mechanism connected to the mounting seat 5. A driving mechanism connected to each rotating shaft 3 is provided on the side of the frame 1. The driving mechanism controls the synchronous rotation of each rotating shaft 3. A plurality of axial flow fans 14 are provided on the frame 1 below the support beam 2. The axial flow fans 14 circulate air under the cooling bed to increase the cooling speed under the billet, so that the cooling speed under the billet is close to the cooling speed of the other end faces, thereby reducing bending.

[0022] The rotating shaft 3 drives the cam 6 to rotate and uses the mounting seat 5 to push the fixed beam 4 to move. After the fixed beam 4 is higher than the supporting beam 2, the cam 6 continues to rotate so that each fixed beam 4 synchronously pushes the steel billet up and away from the supporting beam 2. The cam 6 continues to rotate, uses the fixed beam 4 to push the steel billet forward and as the cam 6 rotates, the fixed beam 4 is lowered until the steel billet contacts the supporting beam 2, thereby using the continuous rotation of the cam 6 to continuously push the steel billet forward, so that the steel billet can move quickly on the cooling bed, thereby reducing the temperature difference between the various surfaces of the steel billet.

[0023] Embodiment 2: A cooling bed for reducing the bending of cold heading steel comprises a frame 1, a plurality of support beams 2 are arranged at intervals on the upper end of the frame 1, a steel pushing unit 3 is arranged between adjacent support beams 2, a plurality of groups of steel pushing units 3 are arranged on the frame 1, the steel pushing units 3 comprise a rotating shaft 3, a fixed beam 4 and a plurality of mounting seats 5, a plurality of cams 6 are fixedly arranged on the rotating shaft 3, the cams 6 correspond to the mounting seats 5 one by one, the mounting seats 5 are provided with pins 7 rotatably connected to the cams 6, the fixed beams 4 are connected to each mounting seat 5,

[0024] The cam 6 is provided with a reset mechanism connected to the mounting seat 5, and the reset mechanism includes a slide groove 8, which is arranged on the side of the cam 6 and is concentric with the pin shaft 7. A slider is arranged in the slide groove 8, and compression springs are fixedly arranged at both ends of the slider. The compression springs are fixedly arranged in the slide groove 8. The two compression springs make the slider in the middle of the slide groove 8. The mounting seat 5 is provided with a connecting shaft 9 connected to the slider.

[0025] A driving mechanism connected to each rotating shaft 3 is arranged on the side of the frame 1, and the driving mechanism includes a transmission shaft 10, which is perpendicular to the rotating shaft 3, and a rotating mechanism 11 connected to the transmission shaft 10, and the transmission shaft 10 is fixedly provided with a plurality of driving gears 12, and each end of the rotating shaft 3 is provided with a driven gear 13, and the driving gear 12 and the driven gear 13 are meshed one by one, and the rotating mechanism 11 includes a reducer and a variable frequency motor, and the reducer includes an input shaft and an output shaft, and the input shaft is connected to the variable frequency motor, and the output shaft is connected to the transmission shaft 10, and the moving speed of the steel billet is adjusted by changing the rotation speed of the variable frequency motor.

[0026] The driving mechanism controls the synchronous rotation of each shaft 3. A plurality of axial flow fans 14 are arranged on the frame 1 below the support beam 2. The axial flow fans 14 circulate the air below the cooling bed, thereby increasing the cooling speed below the billet and making the cooling speed below the billet close to the cooling speed of the other end faces, thereby reducing the bending.

[0027] The rotating shaft 3 drives the cam 6 to rotate and uses the mounting seat 5 to push the fixed beam 4 to move. After the fixed beam 4 is higher than the supporting beam 2, the cam 6 continues to rotate so that each fixed beam 4 synchronously pushes the steel billet up and away from the supporting beam 2. The cam 6 continues to rotate, and uses the fixed beam 4 to push the steel billet forward and lowers the fixed beam 4 as the cam 6 rotates until the steel billet contacts the supporting beam 2, thereby using the continuous rotation of the cam 6 to continuously push the steel billet forward, thereby realizing the rapid movement of the steel billet on the cooling bed. Both ends of the fixed beam 4 are provided with rounded corners. The rounded corners are provided to prevent the fixed beam 4 from scratching the steel billet, thereby reducing the temperature difference between the various surfaces of the steel billet.

[0028] The specific working process is as follows: after the billet is placed on the cooling bed, the axial flow fan 14 is started, and the axial flow fan 14 allows air to circulate under the cooling bed to increase the cooling speed under the billet. The driving mechanism is started, and the driving mechanism drives each shaft 3 to rotate synchronously. The shaft 3 drives the corresponding fixed beam 4 to rotate, thereby quickly pushing the billet forward. The moving speed of the billet can also be adjusted by changing the rotation speed of the rotating mechanism 11. The billet moves quickly to reduce the temperature difference between the various surfaces of the billet and reduce the bending of the billet.

[0029] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A cooling bed for reducing bending of cold heading steel, characterized in that: It includes a frame, a plurality of support beams are arranged at intervals on the upper end of the frame, and push steel units are arranged between adjacent support beams. The push steel unit includes a rotating shaft, a fixed beam and a plurality of mounting seats. A plurality of cams are fixedly arranged on the rotating shaft, and the cams correspond to the mounting seats one by one. The mounting seats are provided with pin shafts rotatably connected to the cams, the fixed beams are connected to each mounting seat, the cams are provided with a reset mechanism connected to the mounting seats, a driving mechanism connected to each rotating shaft is arranged on the side of the frame, and a plurality of axial flow fans are arranged on the frame below the support beams.

2. A cooling bed for reducing bending of cold heading steel as claimed in claim 1, characterized in that: The reset mechanism includes a slide groove, which is arranged on the side of the cam and is concentric with the pin shaft. A slider is arranged in the slide groove, and compression springs are fixedly arranged at both ends of the slider. The compression springs are fixedly arranged in the slide groove, and the mounting seat is provided with a connecting shaft connected to the slider.

3. A cooling bed for reducing bending of cold heading steel as claimed in claim 1, characterized in that: Both ends of the fixed beam are provided with rounded corners.

4. A cooling bed for reducing bending of cold heading steel as claimed in claim 1, characterized in that: The driving mechanism comprises a transmission shaft which is perpendicular to the rotating shaft and is connected to a rotating mechanism. The transmission shaft is fixed with a plurality of driving gears, and each end of the rotating shaft is provided with a driven gear, and the driving gears and the driven gears are meshed one by one.

5. A cooling bed for reducing bending of cold heading steel as claimed in claim 4, characterized in that: The rotating mechanism comprises a reducer and a variable frequency motor. The reducer comprises an input shaft and an output shaft. The input shaft is connected to the variable frequency motor, and the output shaft is connected to the transmission shaft.

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