A suspended ground rail structure for continuous casting steel hydraulic shears

Abstract

A suspended ground rail structure for a hydraulic shear used in continuous casting steel, relating to the field of metallurgical equipment technology, includes a hydraulic shear, two parallel rails, and a slider mounted on the rails and capable of moving along the length of the rails. The hydraulic shear is fixed to the slider. The rails consist of a guide section with a triangular cross-section at the top and a load-bearing section with a rectangular cross-section at the bottom, with a base located below the load-bearing section. A cooling device is installed at one end of the rails to spray a mixture of aerosol and water mist onto the rails and hydraulic shear. By setting up the base, the rails are lifted off the ground, breaking the traditional closed structure of ground rails in contact with the ground, which enhances the airflow between the bottom of the rails and the surrounding area, fundamentally improving the heat dissipation conditions of the rails. The cooling device at the end of the rails sprays a mixture of aerosol and water mist onto the rails and hydraulic shears, where the water mist rapidly evaporates and absorbs heat on the high-temperature surface, achieving efficient cooling.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical equipment technology, specifically to a suspended ground rail structure for a hydraulic shear for continuous casting steel. Background Technology

[0002] In continuous casting production lines, hydraulic shears are key equipment for cutting high-temperature steel billets. Compared to overhead hydraulic shears, ground-rail hydraulic shears are widely used due to their better structural stability and stronger load-bearing capacity. However, ground-rail hydraulic shears are located below the high-temperature steel billets, resulting in poor heat dissipation. The hydraulic shears and rails are constantly affected by the heat radiation and heat conduction from the high-temperature steel billets, which can easily lead to rail deformation and failure of precision components inside the hydraulic shears due to high temperatures, thus affecting the reliability and lifespan of the equipment. Secondly, traditional rails are mostly flat, and oxide residues generated during cutting can easily accumulate on their surface. This can intensify the friction between the rail and the slider, and in severe cases, cause the slider to jam in the rail.

[0003] Currently, common solutions focus on cooling the hydraulic shear body. This typically involves installing air or water cooling devices around the hydraulic shear, or arranging cooling pipes filled with coolant around the hydraulic cylinders and precision components during the hydraulic shear's production and assembly process. These solutions can cool the hydraulic shear body. However, these technical solutions have some shortcomings: they cannot cool other components of the ground-rail hydraulic shear, and they do not fundamentally improve the overall working environment of the ground-rail hydraulic shear. Utility Model Content

[0004] This utility model provides a suspended ground rail structure for a hydraulic shear for continuous casting steel. It adopts a combination of multiple cooling methods to achieve cooling of the entire ground rail hydraulic shear equipment, including the hydraulic shear, slider, and rail. At the same time, the upper part of the rail adopts a triangular design to solve the problem of oxide residue accumulation.

[0005] To achieve the above objectives, the specific solution adopted by this utility model is as follows: a suspended ground rail structure for a hydraulic shear for continuous casting steel, comprising a hydraulic shear, two parallel rails, and a slider mounted on the rails and capable of moving along the length of the rails. The hydraulic shear is fixed on the slider. The rails consist of a guide section with a triangular cross-section at the top and a load-bearing section with a rectangular cross-section at the bottom. A base is provided below the load-bearing section. A cooling device for spraying a mixture of aerosol and hydraulic shear is provided at one end of the rails.

[0006] As an optimized solution for the above-mentioned suspended ground rail structure for continuous casting steel hydraulic shears: there are multiple bases, which are spaced apart below the load-bearing part along the length of the rail.

[0007] As another optimized solution for the above-mentioned suspended ground rail structure for hydraulic shears of continuous casting steel: the mixing and cooling device includes an atomizing mechanism, an air-mist mixing box and an air collecting box. The air-mist mixing box has an air inlet on one side and is connected to the air collecting box on the other side. The air collecting box has an air outlet. The atomizing mechanism is formed by connecting a water inlet pipe, an atomizer and a spray pipe in sequence. The nozzle is set on the spray pipe located inside the air-mist mixing box.

[0008] As another optimized solution for the above-mentioned suspended ground rail structure for continuous casting steel hydraulic shears: a horn-shaped guide vane is provided around the air outlet.

[0009] As another optimized solution for the above-mentioned suspended ground rail structure for continuous casting steel hydraulic shears: the spray direction of the mixing and cooling device is tilted towards the inner side of the two rails.

[0010] As another optimized solution for the above-mentioned suspended ground rail structure for continuous casting steel hydraulic shear: several air holes with the air outlet direction tilted upwards are set on the inner side of the rail and below the spray path of the mixing and cooling device.

[0011] As another optimized solution for the above-mentioned suspended ground rail structure for continuous casting steel hydraulic shears: the air holes are inclined at 10 to 15 degrees toward the center line of the inner side of the two rails.

[0012] As another optimized solution for the above-mentioned suspended ground rail structure for continuous casting steel hydraulic shears: the air holes are tilted 10 to 15 degrees away from the mixing and cooling device.

[0013] As another optimized solution for the above-mentioned suspended ground rail structure for continuous casting steel hydraulic shears: the guide section has a through air passage opened along the length of the rail.

[0014] As another optimized solution for the suspended ground rail structure of the aforementioned continuous casting steel hydraulic shear, an air gap is provided along the length of the air passage, which communicates with the space on both sides of the guide section.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up a base, the track is lifted off the ground, breaking the traditional closed structure of ground track in contact with the ground, which enhances the air circulation between the bottom of the track and the surrounding area, fundamentally improving the heat dissipation conditions of the track.

[0016] 2. A cooling device is installed at the end of the track to spray a mixture of aerosol and water mist onto the track and hydraulic shears. The water mist evaporates rapidly on the high-temperature surface and absorbs heat, achieving efficient cooling.

[0017] 3. Several upward-sloping air holes are installed inside the track and below the spray path of the mixing and cooling device to blow up the falling, incompletely evaporated water mist and blow it back onto the hydraulic shear. This scheme improves the efficiency of water resource utilization and the cooling uniformity of the entire hydraulic shear equipment.

[0018] 4. The upper part of the track adopts a triangular cross-section design, which allows the oxidation residue to slide off by its own gravity without the need for a special cleaning device. At the same time, air channels are opened inside to continuously cool the track body. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a top view of the structure of this utility model; Figure 3 This is a schematic diagram of the airway arrangement of this utility model; Figure 4 This is a schematic diagram of the air gap arrangement of this utility model; Figure 5 This is a schematic diagram of the internal structure of the mixing and cooling device of this utility model; Reference numerals: 1. Hydraulic shear; 101. Billet shearing opening; 2. Slider; 3. Traction rod; 4. Track; 401. Guide section; 402. Load-bearing section; 5. Base; 6. Cooling and mixing device; 601. Atomizing mechanism; 6011. Water inlet pipe; 6012. Atomizer; 6013. Spray pipe; 6014. Nozzle; 602. Air inlet; 603. Air-mist mixing box; 604. Air collection box; 605. Air outlet; 606. Trumpet-shaped guide vane; 7. Air hole; 8. Air duct; 9. Air passage; 901. Air gap; 10. Billet. Detailed Implementation

[0020] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. Parts not described or disclosed in detail in the following embodiments of this utility model should be understood as prior art known or should be known by those skilled in the art.

[0021] Example 1 like Figure 1 , Figure 2 , Figure 5As shown, this utility model provides a suspended ground rail structure for a hydraulic shear used in continuous casting steel, including a hydraulic shear 1, two parallel rails 4, and a slider 2 that can move along the length of the rails 4. The hydraulic shear 1 is fixed above the slider 2, and the steel billet 10 passes through the steel billet shearing opening 101. The slider 2 straddles the rails 4, and its bottom has a groove that matches the shape of the rails 4. A traction rod 3 is provided in the middle of the slider 2, and the traction rod 3 drives the slider 2 to reciprocate along the length of the rails 4. The slider 2 has a starting position and an ending position during operation, and the slider 2 reciprocates between the starting position and the ending position. Specifically, when the slider 2 is in the starting position, the hydraulic shear 1 on it begins to shear the steel billet 10. When the slider 2 moves to the ending position, the hydraulic shear 1 completes the shearing of the steel billet 10. After the shearing is completed, the hydraulic shear 1 moves back to the starting position to perform the next round of shearing. This is the prior art.

[0022] The track 4 is divided into upper and lower parts: the upper part is the guide part 401, which has a triangular cross-section; the lower part is the load-bearing part 402, which has a rectangular cross-section. The triangular guide part 401 can effectively prevent the accumulation of oxide residue generated during the cutting of the steel billet 10 on its surface. The oxide residue will slide off along the inclined surfaces on both sides of the guide part 401 due to gravity, solving the problem of the slider 2 getting stuck due to residue accumulation. The rectangular load-bearing part 402 can provide stable support for the guide part 401.

[0023] A base 5 is provided below the load-bearing part 402. The base 5 is made of reinforced concrete and has a robust structure capable of withstanding all dynamic and static loads of the hydraulic shear 1 and other components. Multiple bases 5 are arranged at intervals along the length of the track 4 below the load-bearing part 402. By setting the bases 5, the track 4 is lifted off the ground, breaking the traditional closed structure of the ground track, which enhances airflow between the bottom of the track 4 and its surroundings, thus improving the overall heat dissipation of the track.

[0024] At the ends of the two tracks 4, i.e., at the end where the slider 2 reaches its final position, a mixing and cooling device 6 is respectively installed to spray an aerosol mixture onto the tracks 4 and the hydraulic shear 1. The mixing and cooling device 6 mainly includes an atomizing mechanism 601, an aerosol mixing box 603, and an air collecting box 604. The aerosol mixing box 603 and the air collecting box 604 are interconnected. The atomizing mechanism 601 is formed by sequentially connecting a water inlet pipe 6011, an atomizer 6012, and a spray pipe 6013. The nozzle 6014 is installed on the spray pipe 6013 located inside the aerosol mixing box 603. External water enters through the water inlet pipe 6011, and after passing through the atomizer 6012, it is turned into a fine water mist. The atomizer 6012 can be a commercially available product. The water mist is transported to the aerosol mixing box 603 through the spray pipe 6013 and finally sprayed out by the nozzle 6014.

[0025] An external air source injects high-speed airflow into the aero-mist mixing box 603 through the air inlet 602. The external air source is compressed air from the factory. Inside the aero-mist mixing box 603, the high-speed airflow is fully mixed with the fine water mist sprayed from the nozzle 6014 to form a uniform aero-mist mixture. Subsequently, the aero-mist mixture enters the air collection box 604 and is sprayed out through the air outlet 605 on it.

[0026] The air outlet 605 is surrounded by a horn-shaped guide vane 606. The beneficial effect of this structure is that it can gather and guide the sprayed aerosol mixture, reduce diffusion loss, and ensure that the aerosol mixture can concentrate and impact the hydraulic shear 1 and the track 4 at high speed.

[0027] Furthermore, the spray direction of the mixing and cooling device 6 is inclined in the horizontal direction towards the center line of the inner side of the two tracks 4. Since the main body of the hydraulic shear 1 is located inside the two tracks 4, this design allows the aerosol mixture sprayed by the mixing and cooling device 6 to better cover the hydraulic shear 1.

[0028] The above are the basic embodiments of this utility model. Further improvements, optimizations, and limitations can be made based on the above to obtain the following embodiments: Example 2 This embodiment is an improvement on embodiment 1. Its main structure is the same as that of embodiment 1, but the improvement lies in: [The following is a more detailed description of the improvement.] Figure 1 , Figure 2 As shown, several upward-sloping air vents 7 are installed on the ground inside the two tracks 4, near the base 5. The air vents 7 are also located below the injection path of the mixing and cooling device 6. The air vents 7 are connected to air ducts 8 on the ground, and compressed air is introduced into the air ducts 8. The specific tilt direction of the air vents 7 is: not only tilted 10 to 15 degrees towards the inside of the tracks 4, i.e., towards the center line of the two tracks 4, but also tilted 10 to 15 degrees away from the mixing and cooling device 6.

[0029] The design of the air vent 7 can re-blow up the water mist that has fallen due to gravity and has not yet fully evaporated, sprayed from the cooling and mixing device 6, and then blow it onto the surfaces of the hydraulic shear 1 and the track 4. The double-tilted design will produce a better cooling effect. Specifically, the air vent 7 is tilted towards the center line of the two tracks 4, which will cause the re-blown water mist to gather in the middle; when the hydraulic shear 1 returns to the starting position after cutting, the hydraulic shear 1 is far from the cooling and mixing device 6, and the water mist it sprays will fall due to gravity and thus cannot reach the surface of the hydraulic shear 1. The tilt of the air vent 7 away from the cooling and mixing device 6 will give the re-blown water mist a lateral initial velocity, so that the unevaporated water mist can reach the surface of the hydraulic shear 1 located at the starting position.

[0030] Example 3 This embodiment is an improvement on embodiment 1. Its main structure is the same as that of embodiment 1, but the improvement lies in: [The following is a more detailed description of the improvement.] Figure 3 , Figure 4 As shown, multiple through-flow air passages 9 are opened inside the guide section 401 along its length. Cooling airflow is introduced into the air passages 9. The cooling airflow can be compressed air, which can continuously cool the track 4, thereby reducing the internal temperature of the track 4.

[0031] When slider 2 reciprocates on track 4, the contact area between slider 2 and guide part 401 generates high temperature due to friction. To further reduce the temperature of the contact area between guide part 401 and slider 2, air gaps 901 are opened along the length of air passage 9 on both sides of the contact area between guide part 401 and slider 2. Air gaps 901 connect the air passage 9 with the spaces on both sides of guide part 401. Part of the cooling airflow entering air passage 9 flows out from the other end of guide part 401, and the remainder flows out through air gap 901.

[0032] When cooling airflow enters the air passage 9, due to the presence of the air gap 901, the cooling airflow will also carry away some of the heat generated by friction between the slider 2 and the guide part 401, thereby reducing the temperature of the two sides of the guide part 401.

[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A suspended ground rail structure for a hydraulic shear used in continuous casting steel, comprising a hydraulic shear (1), two parallel rails (4), and a slider (2) mounted on the rails (4) and capable of moving along the length of the rails (4), wherein the hydraulic shear (1) is fixed on the slider (2), characterized in that: The track (4) consists of a guide part (401) with a triangular cross-section at the top and a load-bearing part (402) with a rectangular cross-section at the bottom. A base (5) is provided below the load-bearing part (402). A mixing and cooling device (6) is provided at one end of the track (4) to spray a mixture of aerosol and hydraulic shear (1).

2. The suspended ground rail structure for a continuous casting steel hydraulic shear according to claim 1, characterized in that: There are multiple bases (5), which are spaced apart below the load-bearing part (402) along the length of the track (4).

3. The suspended ground rail structure for a continuous casting steel hydraulic shear according to claim 1, characterized in that: The mixing and cooling device (6) includes an atomizing mechanism (601), an aerosol mixing box (603), and an air collecting box (604). An air inlet (602) is provided on one side of the aerosol mixing box (603), and the other side is connected to the air collecting box (604). An air outlet (605) is provided on the air collecting box (604). The atomizing mechanism (601) is formed by connecting a water inlet pipe (6011), an atomizer (6012), and a spray pipe (6013) in sequence. A nozzle (6014) is provided on the spray pipe (6013) located inside the aerosol mixing box (603).

4. The suspended ground rail structure for a continuous casting steel hydraulic shear according to claim 3, characterized in that: A horn-shaped air guide vane (606) is provided around the air outlet (605).

5. The suspended ground rail structure for a continuous casting steel hydraulic shear according to claim 1, characterized in that: The jetting direction of the mixing and cooling device (6) is tilted toward the inside of the two tracks (4).

6. The suspended ground rail structure for a continuous casting steel hydraulic shear according to claim 5, characterized in that: Inside the track (4) and below the injection path of the mixing and cooling device (6), several air holes (7) with the air outlet direction tilted upward are provided.

7. The suspended ground rail structure for a continuous casting steel hydraulic shear according to claim 6, characterized in that: The air vent (7) is inclined at 10 to 15 degrees toward the center line of the inner side of the two tracks (4).

8. The suspended ground rail structure for a continuous casting steel hydraulic shear according to claim 7, characterized in that: The air vent (7) is tilted 10 to 15 degrees away from the mixing and cooling device (6).

9. The suspended ground rail structure for a continuous casting steel hydraulic shear according to claim 1, characterized in that: The guide section (401) has a through air passage (9) inside along the length of the track (4).

10. A suspended ground rail structure for a continuous casting steel hydraulic shear according to claim 9, characterized in that: An air slit (901) is provided along the length of the air passage (9) to communicate with the space on both sides of the guide part (401).

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