Elastic bendable switch rail structure and processing device thereof

Abstract

This invention discloses a flexible bendable switch rail structure and its processing device, belonging to the field of railway turnout manufacturing technology. The flexible bendable switch rail structure is manufactured integrally from 60AT2 low-profile special section steel rails. Its arc-shaped end adopts a concealed tip structure, with the tip concealed within the track gauge line by 3mm. The arc-shaped section is planed on both sides to gradually reduce the width of the rail head. The processing device includes a conveyor line, a water cooling mechanism, and an air cooling mechanism. By setting adjustable-spaced splash guards on the conveyor line, water jets from water spray nozzles impact the flexible bendable switch rail structure. While cooling the flexible bendable switch rail structure, the splash guards shield the water jets from splashing, preventing water from entering the tip area of ​​the flexible bendable switch rail structure.

Description

Technical Field

[0001] This invention relates to the field of railway turnout manufacturing equipment, and in particular to a flexible bendable switch rail structure and its processing equipment. Background Technology

[0002] Flexible switch rails are the core component of railway turnout systems. Their function is to guide the wheels of a train to smoothly transition from one track to another when the train passes through the turnout. Because the switch rails directly bear the pressure, impact, and wear of the wheels, they are required to have extremely high strength, hardness, and fatigue life.

[0003] To meet wear resistance requirements, flexible bendable point rails must undergo medium-frequency induction hardening of the rail head tread and working edges after machining. Existing cooling processes typically involve a water-first, then air-fed, low-rate quenching process; that is, cooling water is first sprayed onto the rail head, then compressed air is used. However, because the end cross-sectional dimensions of flexible bendable point rails gradually taper, a single, fixed cooling intensity during continuous cooling after quenching can cause the thin-walled tip to develop brittle martensitic structures or even quenching cracks due to excessive heat dissipation. Conversely, the thicker heel area may suffer from insufficient cooling, resulting in substandard hardness. Based on this, in actual operation, only air cooling is used to cool the thin-walled tip. However, in actual operation, the cooling water sprayed onto the heel area will splash onto the thin-walled tip position close to the spraying area after impacting the tip rail surface, resulting in the tip still being subjected to water cooling. This not only defeats the design intention of air cooling the tip, but also makes it easier to induce martensitic structure and quenching cracks at the tip due to the local rapid cooling effect of the water film. Summary of the Invention

[0004] This invention provides an elastic bendable tip rail structure and its processing device, which can solve the problem in the prior art that cooling water sprayed onto the heel area will splash onto the thin-walled tip position close to the spraying area after impacting the tip rail surface.

[0005] A flexible bendable point rail structure is integrally manufactured from 60AT2 low-profile special section steel rail, which includes an arc section and a main body section; the end of the arc section adopts a concealed point structure, and the tip of the concealed point structure is concealed within the gauge line of the basic rail by 3mm; the arc section is planed on both sides, and the width of the rail head of the arc section gradually decreases.

[0006] A processing apparatus is used for the aforementioned flexible bendable tip rail structure; the processing apparatus includes a conveyor line for conveying the flexible bendable tip rail structure, the conveyor line being equipped with a water cooling mechanism and an air cooling mechanism; the water cooling mechanism includes a pair of splash guards and a nozzle disposed on one side of the splash guards, the distance between the two splash guards being adjustable to adapt to the width of the flexible bendable tip rail structure; the two splash guards are respectively located on both sides of the flexible bendable tip rail structure; the inlet end of the conveyor line is located at the outlet of a quenching equipment.

[0007] Furthermore, the water cooling mechanism includes a gantry frame mounted on the conveyor frame. The top of the gantry frame is provided with a guide rail slider structure, which has two independently operating sliders. Each slider is connected to a splash guard via a connecting plate. The splash guard is provided with an mounting plate on the side near the quenching equipment, and a water spray nozzle is mounted on the mounting plate.

[0008] Furthermore, a baffle assembly is installed between the two splash guards. The baffle assembly includes a first baffle fixed to one splash guard by bolts. The first baffle has a pair of horizontally arranged rectangular openings. The other splash guard has a T-shaped block that mates with the rectangular openings. The outer wall of the first baffle is fixed to a second baffle by two bolts. The second baffle has a pair of vertically arranged rectangular openings. The bolts pass through the rectangular openings.

[0009] Furthermore, the air-cooling mechanism includes a second gantry frame installed on the conveyor line frame. The top of the second gantry frame is provided with a slide rail, and a first slider is provided on the slide rail. A top plate placed horizontally above the conveyor line is connected to the first slider, and an air jet nozzle is installed on the top plate.

[0010] Furthermore, the air-cooling mechanism also includes two second sliders disposed on the slide rail, the two second sliders being located on both sides of the first slider, the second sliders being connected to a vertical plate via a connecting frame, a side plate being installed on one side of the vertical plate, the two side plates being located on both sides of the elastic bendable pointed rail structure, and a second jet nozzle being installed on the side plate; or the air-cooling mechanism also includes a second side plate disposed on the other side of the splash guard, the second side plate being installed with a second jet nozzle.

[0011] Furthermore, it also includes a suction hood installed on the gantry frame, the suction hood being connected to a power device via a connecting pipe, and the power device being connected to jet nozzle one and jet nozzle two via a pipeline.

[0012] Furthermore, a position detection mechanism is provided on the conveyor frame located between the water cooling mechanism and the quenching equipment. The detection mechanism includes infrared distance sensors installed on both sides of the conveyor frame.

[0013] Furthermore, it also includes a controller, which is connected to the position detection mechanism, the water cooling mechanism, and the air cooling mechanism.

[0014] Furthermore, the top of the gantry frame one and the gantry frame two are respectively provided with protective cover one and protective cover two. The protective cover one and the protective cover two have the same structure. The top or one side of the protective cover one is provided with a rectangular opening arranged along the conveying direction of the vertical conveyor line. The connecting plate and / or connecting frame move along the length direction of the rectangular opening.

[0015] This invention achieves physical isolation of the cooling area by setting a pair of splash guards to separate the two sides of the flexible and bendable tip rail structure, thus preventing cooling water from splashing towards the tip and avoiding unintended water cooling of the tip from the source. Furthermore, by connecting the feed end of the conveyor line to the discharge port of the quenching equipment, it achieves seamless transfer of hot workpieces. Attached Figure Description

[0016] Figure 1 A schematic diagram of the elastic bendable tip rail structure provided by the present invention; Figure 2 Schematic diagram of the processing equipment provided by the present invention Figure 1 ; Figure 3 Provided for the present invention Figure 2 Enlarged view of a portion of point A in the middle; Figure 4 Provided for the present invention Figure 2 Enlarged view of a section at point B in the middle; Figure 5 Schematic diagram of the processing equipment provided by the present invention Figure 2 ; Figure 6 Provided for the present invention Figure 5 Enlarged view of a section at point C; Figure 7 Schematic diagram of the processing equipment provided by the present invention Figure 3 .

[0017] Explanation of reference numerals in the attached figures: 1- Flexible bendable pointed rail structure, 2- Conveyor line, 3- Water cooling mechanism, 4- Air cooling mechanism, 10- Arc-shaped section, 11- Main body section, 12- Concealed pointed structure, 21- Roller, 22- Frame, 30- Splash guard, 301- Mounting plate, 31- Gantry frame one, 32- Connecting plate, 33- First baffle, 330- Bolt one, 331- Rectangular opening one, 332- T-block, 34- Second baffle, 340- Bolt two, 341- Rectangular opening two, 35- Side plate two, 40- Air cooling mechanism, 41- Gantry frame two, 42- Top plate, 43- Connecting frame, 44- Vertical plate, 45- Side plate one, 5- Suction hood, 6- Infrared distance sensor, 7- Protective cover one, 70- Protective cover two, 72- Rectangular opening. Detailed Implementation

[0018] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0019] Example 1 In the current process of cooling flexible bendable tip rails after quenching, in order to avoid inducing martensitic structures and quenching cracks at the tip, a combination of water cooling and air cooling is used. That is, only air cooling is used to cool the tip, while water cooling is used first and then air cooling is used to cool other areas. However, because the cooling water sprayed at the heel end is very easy to splash after impacting the rail surface, it spreads to the adjacent tip area, causing the tip to still be affected by water cooling, making it difficult to achieve the preset goal of zoned cooling.

[0020] A flexible bendable point rail structure is integrally manufactured from 60AT2 low-profile special section steel rail, which includes an arc section 10 and a main body section 11; the end of the arc section 10 adopts a concealed point structure, with the tip concealed 3mm inside the gauge line of the basic rail; the arc section 10 is planed on both sides, and the width of the rail head of the arc section gradually decreases.

[0021] Based on the above-mentioned technical problems, the technical solution provided by the present invention is to set two splash guards 30 respectively located on both sides of the flexible bendable tip rail structure 1. The two splash guards 30 form a channel for the flexible bendable tip rail structure 1 to pass through. A water cooling mechanism 3 is provided on the feed side of the splash guards 30 near the flexible bendable tip rail structure 1. The water cooling mechanism 3 includes two water spray nozzles respectively located on both sides of the flexible bendable tip rail structure 1.

[0022] Its working principle is as follows: the water jet from the spray nozzle impacts the flexible bendable tip rail structure 1, cooling the flexible bendable tip rail structure 1 while the splash baffle 30 blocks the water jet impact and splash, preventing water jet from splashing into the tip area of ​​the flexible bendable tip rail structure 1.

[0023] It should be emphasized that the core improvement of this embodiment is that the splash baffle 30 blocks the water flow impact and splash, preventing water from splashing into the tip area of ​​the flexible bendable tip rail structure 1, and preventing water cooling in the tip area of ​​the flexible bendable tip rail structure 1.

[0024] Example 2 It is understood that, in Embodiment 1, in order to facilitate selective water cooling and air cooling of the flexible bendable tip rail structure 1, the processing device of the present invention includes a conveyor line 2 for conveying the flexible bendable tip rail structure 1, and a water cooling mechanism 3 and an air cooling mechanism 4 are provided on the conveyor line 2.

[0025] If the distance between the two splash guards 30 is constant, the width of the channel formed by the two splash guards 30 must be able to meet the requirements of the entire flexible bendable tip rail structure 1 on the conveyor line 2. Since the flexible bendable tip rail structure 1 is a curved structure and its tip rail width gradually decreases as the rail head is cut, this will cause an excessive gap between the end of the splash guard 30 and the flexible bendable tip rail structure 1 in the actual process. When the gap is too large, cooling water is easy to splash onto the thin-walled tip.

[0026] To solve the above problems, the water cooling mechanism 3 provided by the present invention includes a gantry frame 31 set on the frame of the conveyor line 2. A guide rail slider structure is set on the top of the gantry frame 31. The guide rail slider structure has two sliders that can slide independently along the guide rail. Each slider is connected to a splash guard 30 through a connecting plate 32. The two splash guards 30 are respectively located on both sides of the elastic bendable tip rail structure 1. The feed end of the conveyor line 2 is located at the discharge port of the quenching equipment. A mounting plate 301 is set on the side of the splash guard 30 near the quenching equipment. A water spray nozzle is installed on the mounting plate 301.

[0027] Because the flexible bendable tip rail structure 1 conveyed on the conveyor line 2 changes not only in cross-sectional width when passing through the water cooling mechanism 3, but also in its longitudinal position relative to the conveyor line 2, in actual operation, it is required that the spacing between the two splash guards 30 be adapted to the adjustable width of the flexible bendable tip rail structure 1, and that the position of the splash guards 30 be periodically adjusted relative to the flexible bendable tip rail structure 1 on the conveyor line 2.

[0028] Working principle: When the tip of the flexible bendable tip rail structure 1 passes through the water cooling mechanism 3, the two splash guards 30 move synchronously to one side, and the distance between the two splash guards 30 continuously increases until it matches the maximum width of the flexible bendable tip rail structure 1; when the main body section 11 of the flexible bendable tip rail structure 1 passes through the water cooling mechanism 3, the two splash guards 30 move synchronously to one side, and the distance between the two splash guards 30 remains constant.

[0029] It should be emphasized that the core improvement of this embodiment is that by setting two splash guards 30, and the two splash guards 30 can move independently along the length direction of the vertical conveyor line 2, the driving slider drives the two splash guards 30 to move towards or away from each other, so that the distance between the two splash guards 30 matches the current width of the switch rail, and the position of the channel formed by the two splash guards 30 matches the position of the elastic bendable switch rail structure 1 when it passes through the water cooling mechanism 3.

[0030] It is known that, in order to prevent water from splashing from the channel above the flexible bendable tip rail structure 1 when the water sprays from the nozzle, a baffle assembly is installed between the two splash guards 30. The baffle assembly is located above the flexible bendable tip rail structure 1, and the distance between its bottom end and the upper surface of the flexible bendable tip rail structure 1 is designed to be about 0.5cm.

[0031] Specifically, since the two splash guards 30 will shift relative to each other during operation, in order to keep the baffle assembly blocking the upper part of the channel formed by the two splash guards 30 and to adapt to the height requirements of the flexible bendable rail structure 1, the baffle assembly includes a first baffle 33 fixed to a splash guard 30 by bolts 330. The first baffle 33 is provided with a pair of horizontally arranged rectangular openings 331, and the other splash guard 30 is provided with a T-shaped block 332 that mates with the rectangular openings 331. The outer wall of the first baffle 33 is fixed to a second baffle 34 by two bolts 340. The second baffle 34 is provided with a pair of vertically oriented rectangular openings 341, and the bolts 340 pass through the rectangular openings 341.

[0032] Working principle: First, adjust the vertical position of the second baffle 34 according to the height of the switch rail, loosen the bolt 2 340, move the second baffle 34 up and down so that its lower edge is close to the roller surface of the conveyor line 2, and then tighten the bolt 2 340; and when the two splash baffles 30 are relatively displaced, that is, when the distance between the two splash baffles 30 changes, the T-shaped block 332 slides in the rectangular opening 331.

[0033] Example 3 Based on Embodiment 1, when the tip of the flexible bendable tip rail structure 1 needs to be air-cooled, if air is blown from both sides of the tip, the tip section of the flexible bendable tip rail structure 1 is extremely narrow and the wall thickness is extremely thin, so its heat dissipation rate is much higher than that of the heel area. If compressed air is applied from both sides of the tip at the same time, it will create a forced convection effect on both sides to accelerate heat dissipation, causing the tip cooling rate to exceed the critical value, and brittle martensite structure to precipitate on the surface of the rail head. In severe cases, quenching cracks will directly initiate at the tip, resulting in the scrapping of the tip rail. At the same time, since the arc section 10 of the flexible bendable tip rail structure 1 is a double-sided planed structure and the width of the rail head gradually decreases along the length direction, if there is a slight difference in the air pressure and air volume of the air blown from both sides, it will generate an asymmetrical aerodynamic torque on the thin-walled tip, causing the tip to undergo lateral bending distortion during the quenching and cooling process. The distortion amount far exceeds the compensation capacity of the anti-deformation pre-bending. Therefore, this invention abandons the side-blowing method and adopts the top-blowing method to air-cool the tip of the flexible bendable tip rail structure 1.

[0034] Specifically, the air-cooling mechanism 4 of the present invention includes a gantry frame 41 installed on the frame of the conveyor line 2. A slide rail is provided on the top of the gantry frame 41, and a first slider is provided on the slide rail. A top plate 42, which is horizontally placed above the conveyor line 2, is connected to the first slider. An air jet nozzle is installed on the top plate 42.

[0035] Working principle: The first slider drives the jet nozzle to move along the length of the vertical conveyor line 2, so that the position of the jet nozzle is directly opposite the position of the elastic bendable tip rail structure 1 when it passes the water cooling mechanism 3.

[0036] It should be emphasized that the core improvement of this embodiment lies in the following: This invention creatively employs top-blowing airflow for cooling the tip. During top-blowing, the airflow acts vertically downwards onto the rail head tread surface. Due to the extremely small surface area of ​​the tip, the airflow density per unit area is moderate, and the cooling rate can be precisely controlled within the pearlite transformation zone, fundamentally eliminating the formation of martensite. Furthermore, top-blowing in a single direction does not generate lateral aerodynamic torque on the thin-walled tip, completely eliminating the risk of bending distortion caused by side-blowing. Based on the above, in order to air-cool the elastic bendable tip rail structure 1 except for the tip position, since the cross-section of the elastic bendable tip rail structure 1 is "I" shaped, if the top blowing method is used, the grooves on both sides of the elastic bendable tip rail structure 1 cannot be air-cooled. Based on this, the present invention adopts the side blowing method to air-cool the elastic bendable tip rail structure 1 except for the tip position.

[0037] Specifically, the present invention provides two methods as follows.

[0038] Method 1: The air-cooling mechanism 4 also includes two second sliders set on the slide rail. The two second sliders are located on both sides of the first slider. The second sliders are connected to the vertical plate 44 through the connecting frame 43. A side plate 45 is installed on one side of the vertical plate 44. The two side plates 45 are located on both sides of the flexible bendable tip rail structure 1. A second air jet nozzle is installed on the side plate 45. The first slider and the second slider can move independently along the length of the slide rail. When the flexible bendable tip rail structure 1 is conveyed on the conveyor line 2 and passes through the air-cooling mechanism 4, the distance between the two side plates 45 changes with the width of the flexible bendable tip rail structure 1 as it passes through the air-cooling mechanism 4.

[0039] Method 2: The air-cooling mechanism 4 also includes a side plate 35 on the other side of the splash guard 30, and a jet nozzle 2 is installed on the side plate 35; when the flexible bendable rail structure 1 on the conveyor line 2 passes through the water-cooling mechanism 3, the distance between the two side plates 35 changes with the width of the flexible bendable rail structure 1 as it passes through the water-cooling mechanism 3.

[0040] Method 1 requires adding two second sliders to the slide rail, and the second sliders must be able to move independently along the rail and be linked with the controller. This means that additional servo drives and feedback are needed to achieve the spacing changing with the width of the switch rail. In addition, the water-cooled and air-cooled spaces are far apart. Before air cooling, the water film formed on the surface of the flexible switch rail structure 1 during water cooling can be dried by the heat inside the flexible switch rail structure 1 before air cooling is performed. This avoids blowing air immediately after water cooling. Due to the uneven distribution of the water film, when the air blows, the water film dries faster in areas with thinner water film, resulting in different cooling effects. This leads to asynchronous microstructural transformation in different areas and generates microscopic thermal stress.

[0041] In Method 2, since Side Plate 2 35 is rigidly connected to and moves synchronously with Splash Baffle 30, this means that wherever Splash Baffle 30 is, Side Plate 2 35 is also there. In other words, the boundary between water cooling and side air cooling is always consistent, and there will be no time and space misalignment where water has been sprayed but the air has not followed or vice versa.

[0042] In the above embodiment three, in order to enhance the cooling effect of the top air blowing on the tip of the flexible bendable rail structure 1 and the cooling effect of the side air blowing on the main body section 11 of the flexible bendable rail structure 1, a suction hood 5 is installed on the gantry frame 31. The suction hood 5 is connected to the power equipment through a connecting pipe. The power equipment is connected to the jet nozzle 1 and the jet nozzle 2 through a pipeline.

[0043] During the water cooling process, the water vapor generated on the surface of the switch rail carries a large amount of heat and converges in the suction hood 5 to form a high-temperature and high-humidity airflow. The power equipment draws in the airflow and pressurizes it. The high-temperature and high-humidity airflow is introduced into the jet nozzles 1 and 2 located on the top plate 42. The jet nozzles 1 and 2 use high-temperature and humid air with a temperature higher than the dew point and where water vapor does not condense.

[0044] For the tip region with a rapidly thinning cross-section, traditional room-temperature strong air cooling can easily cause the surface temperature to drop instantly below the martensitic transformation temperature, generating excessive thermal and structural stresses and inducing cracks. The high-temperature humid air ejected by the jet nozzle reaches temperatures of over 150°C, far exceeding the instantaneous surface temperature of the tip. This hot air acting on the tip does not cause rapid cooling but rather has an effect similar to tempering or slow cooling. It significantly slows down the cooling rate of the tip, minimizes the temperature difference between the tip surface and the core, effectively relaxes residual quenching stress, and eliminates the risk of tip quenching cracks at the source.

[0045] The high-temperature, humid air ejected by the jet nozzle has a higher enthalpy and lower density. When it comes into contact with the high-temperature switch rail, the buoyancy effect caused by the density difference is weakened, and the airflow is more likely to adhere to the surface of the rail head and flow, making it less likely to cause airflow separation. At the same time, the specific heat capacity of the high-temperature, humid air is greater than that of the normal-temperature air, and the airflow per unit volume can carry away more heat. This makes the heat exchange process of the main section 11 more gentle and thorough, avoiding the problem of surface overcooling and core heat retention caused by strong winds at normal temperature, and ensuring the uniform transformation of the entire cross-section structure.

[0046] It should be emphasized that the core improvement of this embodiment lies in: creatively utilizing the high-temperature water vapor generated in the water cooling process, which is then simply pressurized as a new type of cooling medium; by strictly controlling the medium temperature to be higher than the dew point, the use of superheated steam is adopted to achieve protective slow cooling of the tip and efficient temperature equalization of the main body section 11.

[0047] Example 4 Based on embodiments one, two, and three, in order to facilitate the adjustment of the positions of the water-cooling mechanism 3 and the air-cooling mechanism 4, it is necessary to detect when the flexible bendable tip rail structure 1 passes through the corresponding position during actual operation. The present invention provides a position detection mechanism on the frame of the conveyor line 2 located between the water-cooling mechanism 3 and the quenching equipment. The detection mechanism includes infrared distance sensors 6 set on both sides of the frame of the conveyor line 2. The controller is connected to the position detection mechanism, the water-cooling mechanism 3, and the air-cooling mechanism 4. At the same time, in the present invention, the distance between the infrared distance sensor 6 and the water-cooling mechanism 3 is 1m, the distance between the infrared distance sensor 6 and the air-cooling mechanism 4 is 1.5m, and the conveying speed of the conveyor line 2 is 0.2m / s.

[0048] Control of the water-cooling mechanism 3: When the infrared distance sensor 6 detects that the flexible bendable switch rail structure 1 has entered the detection area, the controller records the moment. Since the sensor is 1m away from the water-cooling mechanism 3 and the conveying speed is 0.2m / s, it is calculated that the heel of the switch rail will reach the predetermined spray position of the water-cooling mechanism 3 in 5s. Therefore, the controller sets a 5-second delay trigger logic to ensure that the nozzle of the water-cooling mechanism 3 starts spraying cooling water only when the heel of the switch rail just reaches the spray position, avoiding energy waste and rapid cooling of the switch rail surface caused by premature water spraying. Similarly, the controller sets a 7.5-second delay for air cooling.

[0049] During the conveying process, the infrared distance sensors 6 on both sides of the frame collect the vertical distance between themselves and the surface of the switch rail in real time at a sampling frequency of 100Hz, which are denoted as D left and D right. Based on the continuously collected trends of D left and D right, the controller predicts the positional relationship of the arc section 10 of the switch rail relative to the frame on one side of the conveyor line 2 when it passes through the water cooling mechanism 3 and the air cooling mechanism 4. The controller adjusts the positions of the first and second sliders after delays of 5 seconds and 7.5 seconds respectively, based on the predicted positional relationship. In other words, it adjusts the distance between the first and second sliders relative to the edge of the conveyor line 2.

[0050] Meanwhile, the starting point is the time when the elastic bendable tip rail structure 1 first enters the detection area.

[0051] In Method 1, after a delay of 7.5 seconds, the jet nozzle 2 installed on the control side plate 45 is activated, and the airflow of the jet nozzle 2 is gradually increased according to the length of the flexible bendable tip rail structure 1; when the length of the tip of the flexible bendable tip rail structure 1 is 0.8m, the airflow of the jet nozzle 2 is continuously increased within 4 seconds. In mode two, after a 5-second delay, the second jet nozzle installed on the second baffle 34 is activated, and the airflow of the second jet nozzle is gradually increased according to the length of the flexible bendable tip rail structure 1; when the length of the tip of the flexible bendable tip rail structure 1 is 0.8m, the airflow of the second jet nozzle is continuously increased within 4 seconds.

[0052] It should be emphasized that the core improvement of this embodiment lies in the following: relying on the 5-second and 7.5-second prediction windows formed by the preset 1.5m spacing and 0.2m / s conveying speed, the position and contour data of the switch rail collected by the infrared distance sensor 6 are converted into motion control commands for the first slider, the second slider and the slider, thereby realizing the dynamic following adjustment of the first slider, the second slider and the slider to the arc segment 10 of the switch rail.

[0053] Of course, in another possible technical solution, an image acquisition module and an image analysis module can be used, which are set above the frame of the conveyor line 2. The image acquisition module and the image analysis module work together to analyze the travel trajectory of the flexible and bendable tip rail structure 1 on the conveyor line 2. Combined with the preset dimensions of the flexible and bendable tip rail structure 1 and the width of the conveyor line 2, the water cooling mechanism 3 and the air cooling mechanism 4 can be intelligently controlled to ensure that the nozzle of the water cooling mechanism 3 starts spraying cooling water only when the tip rail end just reaches the spray position, avoiding energy waste and premature cooling of the tip rail surface caused by premature water spraying. Similarly, the controller is set to perform air cooling with a 7.5-second delay. At the same time, the two first sliders can be controlled to move independently along the length of the slide rail. When the flexible and bendable tip rail structure 1 on the conveyor line 2 passes the air cooling mechanism 4, the 45-degree gap between the two side plates changes with the width of the flexible and bendable tip rail structure 1 as it passes the air cooling mechanism 4.

[0054] Example 5 Based on Embodiments 2 to 4, although the guide rail slider structure of gantry 1 31 and the guide rail slider structure of gantry 2 41 have achieved adaptive adjustment of splash baffle 30 and jet nozzle 1, the above-mentioned moving parts are exposed to the high temperature water vapor environment generated by water cooling for a long time, which easily leads to problems such as guide rail corrosion and slider jamming, resulting in delayed adjustment response and affecting cooling accuracy.

[0055] To solve the above problems, such as Figure 3 and 4 As shown, in this embodiment, protective covers 7 and 70 are respectively installed on the top of gantry frame 31 and 41. The two covers have the same structure to reduce mold opening costs: both are made of 304 stainless steel and are inverted U-shaped and fastened to the top of the gantry frame, completely covering the internal guide rails, slide rails and sliders. The top of protective cover 7 has a rectangular opening 72 extending along the conveying direction of the vertical conveyor line 2. Its length covers the maximum adjustment stroke of the splash guard 30 ±200mm. The connecting plate 32 at the top of the splash guard 30 passes through the rectangular opening 72 and is fixedly connected to the slider. Similarly, the length of the rectangular opening 72 at the top of protective cover 70 covers the maximum adjustment stroke of the first slider. The connecting bracket 43 passes through the rectangular opening 72 and is fixedly connected to the first slider of the air cooling mechanism 4. The edges of the rectangular openings 72 are all fitted with oil-resistant and dust-proof brushes. The dust-proof brushes fitted on the edges of the rectangular openings 72 allow the connecting plate 32 and the connecting bracket 43 to slide freely while preventing quenching water from entering the cover.

[0056] The slider of gantry frame 1 31 drives the connecting plate 32 to slide along the rectangular opening 72, and the first slider of gantry frame 2 41 drives the connecting frame 43 to slide along the corresponding rectangular opening 72, so as to realize the dynamic following of the curvature of the water spray nozzle, air spray nozzle 1, and air spray nozzle 2 to the arc segment 10; throughout the adjustment process, the protective cover 1 7 and the protective cover 2 70 provide a closed and stable working environment for the internal moving parts, avoiding interference from the external environment.

[0057] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A flexible, bendable pointed rail structure, characterized in that, It is manufactured as a whole from 60AT2 low-profile special section steel rail, which includes an arc section (10) and a main body section (11). The end of the arc segment (10) adopts a concealed tip structure, and the tip of the concealed tip structure is concealed within the gauge line of the basic rail by 3mm. The arc-shaped segment (10) is cut on both sides, and the width of the rail head of the arc-shaped segment (10) gradually decreases.

2. A processing apparatus, characterized in that, It is used to process the flexible bendable tip rail structure as described in claim 1; The processing device includes a conveyor line (2) for conveying the flexible bendable tip rail structure (1), and the conveyor line (2) is equipped with a water cooling mechanism (3) and an air cooling mechanism (4). The water cooling mechanism (3) includes a pair of splash guards (30) and a nozzle disposed on one side of the splash guards (30). The distance between the two splash guards (30) is adjustable to accommodate the width of the flexible bendable rail structure (1). The two splash guards (30) are located on both sides of the flexible bendable rail structure (1). The feed end of the conveyor line (2) is located at the discharge port of the quenching equipment.

3. The processing apparatus as described in claim 2, characterized in that, The water cooling mechanism (3) includes a gantry frame (31) installed on the frame of the conveyor line (2). The top of the gantry frame (31) is provided with a guide rail slider structure. The guide rail slider structure has two independently operating sliders. Each slider is connected to a splash guard (30) through a connecting plate (32). The splash guard (30) is provided with an installation plate (301) on the side near the quenching equipment, and a water spray nozzle is installed on the installation plate (301).

4. The processing apparatus as described in claim 3, characterized in that, A baffle assembly is installed between the two splash guards (30). The baffle assembly includes a first baffle (33) fixed to one splash guard (30) by a bolt (330). The first baffle (33) is provided with a pair of horizontally arranged rectangular openings (331). The other splash guard (30) is provided with a T-shaped block (332) that cooperates with the rectangular openings (331). The outer wall of the first baffle (33) is fixed to a second baffle (34) by two bolts (340). The second baffle (34) has a pair of vertical rectangular openings (341), and the bolts (340) pass through the rectangular openings (341).

5. The processing apparatus as described in claim 4, characterized in that, The air-cooling mechanism (4) includes a second gantry frame (41) installed on the frame of the conveyor line (2). The top of the second gantry frame (41) is provided with a slide rail, and a first slider is provided on the slide rail. A top plate (42) is connected to the first slider and is placed horizontally above the conveyor line (2). An air jet nozzle is installed on the top plate (42).

6. The processing apparatus as described in claim 5, characterized in that, The air-cooling mechanism (4) also includes two second sliders set on the slide rail. The two second sliders are located on both sides of the first slider. The second sliders are connected to a vertical plate (44) through a connecting frame (43). A side plate (45) is installed on one side of the vertical plate (44). The two side plates (45) are located on both sides of the elastic bendable tip rail structure (1). A jet nozzle is installed on the side plate (45). Alternatively, the air-cooling mechanism (4) may also include a second side plate (35) disposed on the other side of the splash guard (30), on which a second jet nozzle is mounted.

7. The processing apparatus as described in claim 6, characterized in that, It also includes a suction hood (5) installed on the gantry frame (31), the suction hood (5) being connected to a power device via a connecting pipe, and the power device being connected to jet nozzle one and jet nozzle two via a pipeline.

8. The processing apparatus as described in claim 6, characterized in that, A position detection mechanism is provided on the frame of the conveyor line (2) located between the water cooling mechanism (3) and the quenching equipment. The detection mechanism includes infrared distance sensors (6) installed on both sides of the frame of the conveyor line (2).

9. The processing apparatus as described in claim 8, characterized in that, It also includes a controller, which is connected to a position detection mechanism, a water cooling mechanism (3) and an air cooling mechanism (4).

10. The processing apparatus as described in claim 5, characterized in that, The top of the first gantry (31) and the second gantry (41) are respectively provided with a protective cover (7) and a protective cover (70). The protective cover (7) and the protective cover (70) have the same structure. The top or side of the protective cover (7) is provided with a rectangular opening (72) arranged along the conveying direction of the vertical conveying line (2). The connecting plate (32) and / or the connecting frame (43) move along the length direction of the rectangular opening (72).

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