A heat treatment process for a switch rail

Abstract

This invention discloses a heat treatment process for turnout rail components, comprising the following steps: Step 1, normalizing and annealing the turnout rail components; Step 2, heating the turnout rail components in a heating furnace; Step 3, placing the heated turnout rail components onto a mobile trolley, preparing them for cooling in a cooling chamber to complete the quenching process; Step 4, the mobile trolley, using its auxiliary rotating arm, pushes aside the insulation curtain and enters the right-side buffer chamber, then passes through the main cooling chamber and the left-side buffer chamber in sequence; Step 5, after leaving the left-side buffer chamber, the mobile trolley transports the turnout rail components to a designated location, where they undergo a tempering process. During use, this invention avoids the direct waste of cooling air diffused from the main cooling chamber, thus saving resources.

Description

Technical Field

[0001] This invention relates to the field of turnout rail component processing technology, and in particular to a heat treatment process for turnout rail components. Background Technology

[0002] Heat treatment generally includes normalizing, annealing, quenching and tempering. Quenching is a method of heat treatment for workpieces, which usually involves heating the workpiece to a certain high temperature and then rapidly cooling it with water, oil or air to harden the surface of the workpiece.

[0003] When quenching turnout rail components, the process typically begins by heating each component to the required temperature in a furnace. After heating, the components need to be cooled to complete the quenching process. Due to the length of the turnout rail components, a cooling chamber is usually used for cooling. However, when the components are about to enter the cooling chamber, the closed door is opened, causing the cold air inside to diffuse directly to the outside, resulting in a waste of resources. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art:

[0005] When the turnout rail components need to be cooled in the cooling chamber, the closed door of the cooling chamber is opened, and the cold air inside the cooling chamber diffuses directly to the outside, resulting in a waste of resources.

[0006] A heat treatment process for turnout rail components was proposed.

[0007] To achieve the above objectives, the present invention adopts the following technical solutions:

[0008] A heat treatment process for turnout rail components includes the following steps:

[0009] Step 1: Perform normalizing and annealing processes on the turnout rail components;

[0010] Step 2: Heating the turnout rail components in a heating furnace;

[0011] Step 3: Place the heated turnout rail components onto a mobile trolley, ready to enter the cooling box for cooling processing, thus completing the entire quenching process.

[0012] Step 4: The trolley moves by using the auxiliary rotating arm to push aside the insulation curtain and enters the right buffer chamber, then passes through the main cooling chamber and the left buffer chamber in sequence.

[0013] Step 5: After the trolley leaves the left buffer compartment, transport the turnout rail components to the designated location, and then perform a tempering process on the turnout rail components.

[0014] As a further technical solution of the present invention, in step three, each turnout rail component is placed on a moving trolley, at which time the weight of the turnout rail component is supported by each roller and limiting component.

[0015] As a further technical solution of the present invention, in step four, the moving trolley moves towards the direction of the right buffer chamber, so that the two auxiliary rotating arms can push open and separate the two heat preservation curtains from the middle.

[0016] As a further technical solution of the present invention, in step four, when the auxiliary rotating arm is inserted between the two heat preservation curtains, it drives the second magnet block to move forward. During this process, the second magnet block and the first magnet block attract each other. When the auxiliary rotating arm pushes the heat preservation curtain to the side, the side wall of the heat preservation curtain is attracted to the second magnet block by the first magnet block, thereby preventing the heat preservation curtain from falling off the auxiliary rotating arm when the auxiliary rotating arm pushes the curtain.

[0017] As a further technical solution of the present invention, in step four, during the forward movement of the auxiliary rotating arm, the second magnet block will be pulled towards the first spring block by the first magnet block and the insulation curtain. At this time, the second magnet block has a certain displacement stroke. When the auxiliary rotating arm flips to the side, the second magnet block will move towards the front end of the auxiliary rotating arm to prevent the second magnet block from falling off the first magnet block, thereby preventing the insulation curtain from falling off the auxiliary rotating arm.

[0018] As a further technical solution of the present invention, in step three, when the turnout rail component to be cooled is placed on the moving trolley, the telescopic end of the electric push rod extends, thereby pushing the connecting plate and multiple contact plates to move upward until the multiple contact plates contact the bottom of the turnout rail component, increasing the static friction force.

[0019] As a further technical solution of the present invention, in step four, after the moving trolley enters the main cooling chamber, it stops moving. At this time, the main rotating arm and the auxiliary rotating arm return to their initial positions, and the cold air in the main cooling chamber cools down the turnout rail components.

[0020] As a further technical solution of the present invention, in step four, after cooling for a period of time, the moving trolley moves forward again, thereby driving the turnout rail component to move together. Then, the rotating roller on the front side of the moving trolley will collide with the abutting groove on the side door panel body. Under the action of inertial force and the guidance of the roller, the turnout rail component will slide forward a distance, thereby causing the abutting plate to be misaligned with the bottom of the turnout rail component.

[0021] As a further technical solution of the present invention, in step four, after the previously blocked part of the turnout rail component has also been cooled down, the moving trolley moves forward again. During this process, the main rotating arm and the auxiliary rotating arm rotate in coordination under the action of the drive box. With the cooperation of the rotating roller and the abutting groove, the corresponding side door panel body is pushed into the insertion groove two, so that the moving trolley can pass between the two side door panel bodies.

[0022] The beneficial effects of this invention are:

[0023] 1. Initially, each lifting door is closed to prevent cooling gas in the main cooling chamber from directly diffusing into the right and left buffer chambers. When the moving trolley carrying the turnout rail components prepares for the cooling process, during its movement, the trolley first pushes open the two insulation curtains on the right buffer chamber to the sides, allowing the trolley and turnout rail components to enter. Once fully inside the right buffer chamber, the two insulation curtains close, and the lifting door closest to the right buffer chamber opens. The trolley and turnout rail components then enter the main cooling chamber, and the lifting door closes. During the opening and closing of this lifting door, the main cooling chamber... The cooling air inside diffuses into the right-side buffer chamber. An insulation curtain prevents the cold air in the right-side buffer chamber from directly escaping to the outside. When the next moving trolley and turnout rail component enter the right-side buffer chamber, this portion of cooling air provides initial heat dissipation for the turnout rail component, preventing resource waste. Because not all the cold air in the right-side buffer chamber is lost during the opening and closing intervals of the insulation curtain, the temperature difference between the right-side buffer chamber and the main cooling chamber is smaller than the temperature difference between the main cooling chamber and the outside air. Therefore, the right-side buffer chamber reduces the loss of cold air from the main cooling chamber, further conserving resources. The left-side buffer chamber, similarly designed for the left side, also reduces the loss of cold air and conserves resources.

[0024] 2. The auxiliary rotating arm moves with the moving trolley. When the auxiliary rotating arm is inserted between the two insulation curtains, the moving trolley stops moving to prevent the switch rail components on the moving trolley from colliding with the insulation curtains. During the process of the auxiliary rotating arm being inserted between the two insulation curtains, it drives the second magnet block forward. During this process, the second magnet block attracts the first magnet block. Then the main rotating arm drives the auxiliary rotating arm to rotate to the side. Thus, when the auxiliary rotating arm pushes the insulation curtain to the side, the side wall of the insulation curtain is attracted to the second magnet block by the first magnet block, thereby preventing the insulation curtain from falling off the auxiliary rotating arm when it is pushing the curtain apart.

[0025] 3. After the moving trolley enters the main cooling chamber, it stops moving. At this time, the main rotating arm and the auxiliary rotating arm return to their initial positions. The cold air in the main cooling chamber cools the turnout rail components. After cooling for a period of time, the moving trolley moves forward again, thus moving the turnout rail components together. Then, the rotating roller on the front side of the moving trolley will collide with the abutment groove on the side door panel. During this process, the side door panel intercepts the moving trolley. The rotating roller and the auxiliary rotating arm cannot continue to move forward due to the interception of the side door panel. Under the action of inertia, the moving trolley and the turnout rail components will continue to move forward, thus compressing spring two. The inertial force is buffered by the second spring. During this process, the telescopic end of the electric actuator retracts, causing the connecting plate and multiple contact plates to move downwards away from the turnout rail component. Static friction is not applied to the turnout rail component. At this time, the turnout rail component will slide forward a certain distance under the action of inertial force and the guidance of the roller, causing the contact plate to be misaligned with the bottom of the turnout rail component. Then the contact plate moves upwards again, applying static friction to the turnout rail component. At this time, the moving trolley still stops moving for a period of time, so that the cooling air can also fully cool down this part of the turnout rail component, ensuring the uniformity of cooling. Attached Figure Description

[0026] Figure 1 This is a process flow diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the external structure of the cooling box of the present invention;

[0028] Figure 3 This is a schematic diagram of the internal structure of the cooling box of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the mobile vehicle of the present invention;

[0030] Figure 5 This is a schematic diagram showing the connection between the U-shaped mounting bracket and the thermal insulation curtain of the present invention;

[0031] Figure 6 This is a schematic diagram showing the connection between the auxiliary rotating arm and the U-shaped seat of the present invention;

[0032] Figure 7 This is a schematic diagram of the internal structure of the insertion groove of the present invention;

[0033] Figure 8 This is a schematic diagram showing the connection between the side door panel body and the side door panel seat of the present invention;

[0034] Figure 9 This is a schematic diagram showing the connection between the contact plate and the connecting plate of the present invention;

[0035] In the diagram: 1. Cooling box; 2. Main cooling chamber; 3. Right side buffer chamber; 4. Left side buffer chamber; 5. External track; 6. Moving trolley; 7. Mounting groove; 8. Roller; 9. U-shaped mounting bracket; 10. Insulation curtain; 11. Expansion slot; 12. Main rotating arm; 13. Secondary rotating arm; 14. U-shaped seat; 15. Rotating roller; 16. Magnet block one; 17. Magnet block two; 18. Spring one; 19. U-shaped door panel seat; 20. Lifting door; 21. Side door panel seat; 22. Side door panel body; 23. Abutment groove; 24. Insertion slide groove one; 25. Telescopic rod; 26. Spring two; 27. Abutment plate; 28. Connecting plate; 29. ​​Electric push rod; 30. Ventilation slot; 31. Rotating column. Detailed Implementation

[0036] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0037] Reference Figures 1-9 A heat treatment process for turnout rail components includes the following steps:

[0038] Step 1: Perform normalizing and annealing processes on the turnout rail components;

[0039] Step 2: Heating the turnout rail components in a heating furnace;

[0040] Step 3: Place the heated turnout rail components onto the mobile trolley 6, ready to enter the cooling box 1 for cooling processing, thus completing the entire quenching process.

[0041] Step 4: The moving trolley 6 opens the insulation curtain 10 through the auxiliary rotating arm 13 and enters the right buffer chamber 3, and then passes through the main cooling chamber 2 and the left buffer chamber 4 in sequence.

[0042] Step 5: After the moving trolley 6 leaves the left buffer chamber 4, it transports the turnout rail components to the designated location and then performs a tempering process on the turnout rail components.

[0043] In step three, each turnout rail component is placed on the moving trolley 6, where the weight of the turnout rail component is supported by each roller 8 and the limiting assembly.

[0044] In step four, the trolley 6 moves toward the right buffer chamber 3, so that the two auxiliary rotating arms 13 can push the two insulation curtains 10 apart from the middle.

[0045] In step four, as the auxiliary rotating arm 13 is inserted between the two insulation curtains 10, it drives the second magnet block 17 to move forward. During this process, the second magnet block 17 attracts the first magnet block 16. As the auxiliary rotating arm 13 pushes the insulation curtain 10 to the side, the side wall of the insulation curtain 10 is attracted to the second magnet block 17 through the first magnet block 16, thereby preventing the insulation curtain 10 from falling off the auxiliary rotating arm 13 when it is pushing the curtain.

[0046] In step four, as the auxiliary rotating arm 13 moves forward, the second magnet 17 will be pulled towards the first spring 18 by the first magnet 16 and the insulation curtain 10. At this time, the second magnet 17 has a certain displacement stroke. When the auxiliary rotating arm 13 flips to the side, the second magnet 17 will move towards the front end of the auxiliary rotating arm 13 to prevent the second magnet 17 from falling off the first magnet 16, thereby preventing the insulation curtain 10 from falling off the auxiliary rotating arm 13.

[0047] In step three, when the turnout rail component to be cooled is placed on the moving trolley 6, the telescopic end of the electric push rod 29 extends, thereby pushing the connecting plate 28 and multiple contact plates 27 upward until the multiple contact plates 27 contact the bottom of the turnout rail component, increasing the static friction.

[0048] In step four, after the moving trolley 6 enters the main cooling chamber 2, it stops moving. At this time, the main rotating arm 12 and the auxiliary rotating arm 13 return to their initial positions, and the cold air in the main cooling chamber 2 cools down the turnout rail components.

[0049] In step four, after cooling down for a period of time, the trolley 6 moves forward again, thereby driving the turnout rail component to move together. Then, the rotating roller 15 on the front side of the trolley 6 will collide with the abutment groove 23 on the side door panel body 22. Under the action of inertial force and the guidance of the roller 8, the turnout rail component will slide forward a distance, thereby causing the abutment plate 27 to be misaligned with the bottom of the turnout rail component.

[0050] In step four, after the previously blocked parts of the turnout rail components have cooled down, the moving trolley 6 moves forward again. During this process, the main rotating arm 12 and the auxiliary rotating arm 13 rotate in coordination under the action of the drive box. With the cooperation of the rotating roller 15 and the abutting groove 23, the corresponding side door panel body 22 is pushed into the insertion slide groove 2, so that the moving trolley 6 can pass between the two side door panel bodies 22.

[0051] Reference Figure 2 and Figure 3The present invention also discloses a cooling device, including a cooling box 1, which is divided into a main cooling chamber 2, a right buffer chamber 3 and a left buffer chamber 4. A cooler is provided in the main cooling chamber 2. The cooler is prior art and will not be described in detail here. Two bottom grooves are symmetrically opened at the bottom of the cooling box 1. An internal track is fixed in each bottom groove. Two external tracks 5 are symmetrically fixed on both sides of the cooling box 1. The external tracks 5 are connected to the internal tracks. A moving trolley 6 is movably arranged on the external tracks 5. An installation groove 7 is opened on the upper end face of the moving trolley 6. Multiple rollers 8 are rotatably arranged on the inner wall of the installation groove 7. The multiple rollers 8 are used to support the turnout rail components to be cooled. A limiting component is provided on the moving trolley 6 to cooperate with the turnout rail components.

[0052] First, the turnout rail components are heated to the required temperature in a heating furnace. After the heating process is completed, a cooling process is required to complete the quenching process. The turnout rail components are then removed and placed on a moving trolley 6. At this time, the weight of the turnout rail components is supported by the rollers 8 and the limiting components. The moving trolley 6 then carries the turnout rail components through the right buffer chamber 3, the main cooling chamber 2, and the left buffer chamber 4 in sequence. The turnout rail components are cooled in the main cooling chamber 2. The right buffer chamber 3 is the entry end, and the left buffer chamber 4 is the exit end. After the cooling process of the turnout rail components is completed, the moving trolley 6 carries the turnout rail components away from the cooling chamber 1 to proceed with the subsequent processes.

[0053] Reference Figure 3 and Figure 5 U-shaped mounting brackets 9 are fixed to the inner top and near the end of the right buffer chamber 3 and the left buffer chamber 4. Two heat insulation curtains 10 are symmetrically fixed to the inner top of the U-shaped mounting brackets 9. The inner wall of the U-shaped mounting brackets 9 is also fixedly connected to the side wall of the adjacent heat insulation curtain 10. Two U-shaped door panel seats 19 are symmetrically fixed to the inner top of the main cooling chamber 2. The open end of the U-shaped door panel seat 19 faces downward. A lifting door 20 is movably installed on the inner top of each U-shaped door panel seat 19.

[0054] Initially, each lifting door 20 is closed to prevent cooling gas in the main cooling chamber 2 from directly diffusing into the right buffer chamber 3 and the left buffer chamber 4. When the moving trolley 6, carrying the turnout rail components, prepares to perform the cooling process, during its movement, the moving trolley 6 first pushes open the two insulation curtains 10 on the right buffer chamber 3 to both sides, allowing the moving trolley 6 and the turnout rail components to enter the right buffer chamber 3. Once the moving trolley 6 and the turnout rail components are fully inside the right buffer chamber 3, the two insulation curtains 10 on the right buffer chamber 3 close. At this time, the lifting door 20 near the right buffer chamber 3 opens, and then the moving trolley 6 and the turnout rail components enter the main cooling chamber 2. The lifting door 20 then closes. During the time the lifting door 20 opens and closes, the main cooling gas... The cooling air in cooling chamber 2 diffuses into the right buffer chamber 3. The insulation curtain 10 prevents the cold air in the right buffer chamber 3 from directly dissipating to the outside. When the next moving trolley 6 and turnout rail components enter the right buffer chamber 3, this portion of cooling air provides initial heat dissipation to the turnout rail components, preventing resource waste. Since not all the cold air in the right buffer chamber 3 dissipates during the opening and closing intervals of the insulation curtain 10, the temperature difference between the right buffer chamber 3 and the main cooling chamber 2 is smaller than the temperature difference between the main cooling chamber 2 and the outside air. Therefore, the right buffer chamber 3 reduces the loss of cold air from the main cooling chamber 2, further conserving resources. The left buffer chamber 4 on the left side works similarly to the right buffer chamber 3, both reducing cold air loss and conserving resources.

[0055] Reference Figure 4 Two expansion slots 11 are symmetrically opened on one side of the mobile trolley 6. A main rotating arm 12 is rotatably installed in each expansion slot 11. A secondary rotating arm 13 is movably installed on each main rotating arm 12. A U-shaped seat 14 is fixed at the end of each secondary rotating arm 13 away from the main rotating arm 12. A rotating roller 15 is rotatably installed on the inner wall of the U-shaped seat 14. An inner cavity is opened in the mobile trolley 6. A drive box for driving the main rotating arm 12 to rotate is installed in the inner cavity. An insulation layer is installed in the inner cavity.

[0056] In the initial state, the two auxiliary rotating arms 13 are perpendicular to the insulation curtain 10 and close to the joint of the two insulation curtains 10. Then, the moving trolley 6 moves towards the right buffer chamber 3, so that the two auxiliary rotating arms 13 can separate the two insulation curtains 10 from the middle. The rotating roller 15 is set to prevent the end of the auxiliary rotating arm 13 from scraping against the insulation curtain 10 when it is close to the insulation curtain 10, causing damage to the insulation curtain 10, which would prevent the auxiliary rotating arm 13 from being inserted smoothly between the two insulation curtains 10, thus affecting the subsequent curtain-pulling operation of the auxiliary rotating arm 13.

[0057] Reference Figure 4 and Figure 5Each of the two adjacent heat preservation curtains 10 has a magnet block 16 fixed on its opposite side. The two magnet blocks 16 are magnetically attracted to each other. Each auxiliary rotating arm 13 has a side groove on its side wall. A magnet block 2 17 is movably arranged in each side groove. The magnet block 2 17 is magnetically attracted to the magnet block 16.

[0058] By using the set magnet block 16, the two heat preservation curtains 10 can be connected together under normal conditions, avoiding gaps between them and causing heat exchange and loss.

[0059] The auxiliary rotating arm 13 moves with the moving trolley 6. When the auxiliary rotating arm 13 is inserted between the two insulation curtains 10, the moving trolley 6 stops moving to avoid the turnout rail components on the moving trolley 6 colliding with the insulation curtains 10. During the process of the auxiliary rotating arm 13 being inserted between the two insulation curtains 10, it drives the second magnet block 17 to move forward. During this process, the second magnet block 17 attracts the first magnet block 16. Then, under the action of the drive box, the main rotating arm 12 drives the auxiliary rotating arm 13 to rotate to the side. Thus, when the auxiliary rotating arm 13 pushes the insulation curtain 10 to the side, the side wall of the insulation curtain 10 is attracted to the second magnet block 17 by the first magnet block 16, thereby preventing the insulation curtain 10 from falling off the auxiliary rotating arm 13 when it pushes the curtain apart.

[0060] After the two auxiliary rotating arms 13 push the two insulation curtains 10 to the sides to a certain distance, the moving trolley 6 continues to move. During this process, the side wall of the insulation curtain 10 will contact the side wall of the moving trolley 6, but will not contact the turnout rail components.

[0061] Reference Figure 6 Two guide posts are symmetrically fixed on the inner wall of each side groove. Each guide post moves through the magnet block 17. There is no magnetic attraction between the magnet block 17 and the guide post. Two springs 18 are symmetrically fixed between the magnet block 17 and the inner wall of the side groove. Each spring 18 is movably sleeved on the outer wall of the corresponding guide post.

[0062] Since the moving trolley 6 is stationary when the auxiliary rotating arm 13 is performing the curtain-pulling operation, in order to prevent the insulation curtain 10 from falling off the auxiliary rotating arm 13 during the curtain-pulling operation, the insertion length of the auxiliary rotating arm 13 between the two insulation curtains 10 is relatively long. During this process, the second magnet 17 will be attracted to the first magnet 16. As the auxiliary rotating arm 13 moves forward, the second magnet 17 will be pulled towards the first spring 18 under the pull of the first magnet 16 and the insulation curtain 10. At this time, the second magnet 17 has a certain displacement stroke. When the auxiliary rotating arm 13 flips to the side, the second magnet 17 will move towards the front end of the auxiliary rotating arm 13 to prevent the second magnet 17 from falling off the first magnet 16, thereby preventing the insulation curtain 10 from falling off the auxiliary rotating arm 13.

[0063] Reference Figure 4 and Figure 9 The limiting component includes multiple contact plates 27 movably disposed in the cavity. The upper end face of the contact plate 27 movably passes through the moving trolley 6. The lower end face of the multiple contact plates 27 is fixed with the same connecting plate 28. An electric push rod 29 is fixed at the bottom of the cavity. The end of the telescopic end of the electric push rod 29 is fixedly connected to the bottom of the connecting plate 28. Multiple ventilation slots 30 are provided through the side wall of each contact plate 27.

[0064] When the turnout rail component to be cooled is placed on the moving trolley 6, the telescopic end of the electric push rod 29 extends, thereby pushing the connecting plate 28 and multiple contact plates 27 upward until the multiple contact plates 27 contact the bottom of the turnout rail component. Through the multiple contact plates 27, there is static friction between the contact plates 27 and the turnout rail component, which prevents the turnout rail component from falling off the roller 8 during the process of moving with the moving trolley 6.

[0065] Reference Figure 2 , Figure 7 and Figure 8 Both sides of the main cooling chamber 2 are fixedly provided with side door panel seats 21. The opposite surfaces of the two side door panel seats 21 are movably provided with side door panel bodies 22. Each side door panel body 22 has an abutting groove 23 on its side wall. The main rotating arm 12 has an insertion groove 24 at one end near the auxiliary rotating arm 13. The auxiliary rotating arm 13 moves through into the insertion groove 24. A telescopic rod 25 is fixed between the auxiliary rotating arm 13 and the inner wall of the insertion groove 24. A spring 26 is fixed between the auxiliary rotating arm 13 and the inner wall of the insertion groove 24. The spring 26 is movably sleeved on the outer wall of the telescopic rod 25.

[0066] When the trolley 6 enters the main cooling chamber 2, it stops moving. At this time, the main rotating arm 12 and the auxiliary rotating arm 13 return to their initial positions. The cold air in the main cooling chamber 2 cools the turnout rail components. After cooling for a period of time, the trolley 6 moves forward again, thus moving the turnout rail components together. Then, the rotating roller 15 on the front side of the trolley 6 will collide with the abutment groove 23 on the side door panel body 22. During this process, the side door panel body 22 intercepts the trolley 6. The rotating roller 15 and the auxiliary rotating arm 13 cannot continue to move forward under the interception of the side door panel body 22. Under the action of inertial force, the trolley 6 and the turnout rail components will continue to move forward, thus compressing the spring 26. Spring 26 buffers the inertial force of this part. During this process, the telescopic end of the electric push rod 29 retracts, causing the connecting plate 28 and multiple abutment plates 27 to move downwards away from the turnout rail component. Static friction is not applied to the turnout rail component. At this time, under the action of inertial force and guided by the roller 8, the turnout rail component will slide forward a certain distance, causing the abutment plate 27 to be misaligned with the bottom of the turnout rail component. Then the abutment plate 27 moves upwards again, applying static friction to the turnout rail component. At this time, the moving trolley 6 still stops moving for a period of time, so that the cooling air can also fully cool and lower the temperature of this part of the turnout rail component, ensuring the uniformity of cooling and lowering. During this process, the turnout rail component will not fall off the moving trolley 6.

[0067] Reference Figure 8 Each of the two side door panel seats 21 has an insertion groove 2 on its opposite surface. Each side door panel body 22 slides through into the insertion groove 2. Multiple springs 3 are fixed between the side door panel body 22 and the inner wall of the insertion groove 2. Rotating columns 31 are rotatably provided on the opposite surfaces of the two side door panel bodies 22.

[0068] After the previously blocked parts of the turnout rail components have cooled down, the moving trolley 6 moves forward again. During this process, the main rotating arm 12 and the auxiliary rotating arm 13 rotate in coordination under the action of the drive box. With the cooperation of the rotating roller 15 and the contact groove 23, the corresponding side door panel body 22 is pushed into the insertion slide groove 2, so that the moving trolley 6 can pass between the two side door panel bodies 22.

[0069] Reference Figure 2 Then, the moving trolley 6 drives the turnout rail components away from the main cooling chamber 2 and into the left buffer chamber 4, and then leaves from the left buffer chamber 4. The principle of the moving trolley 6 leaving the cooling chamber 1 is the same as the principle of entering the cooling chamber 1.

[0070] In use, this invention first heats each turnout rail component to the required temperature in a heating furnace. After the heating process is completed, a cooling process is required to complete the quenching process. Each turnout rail component is then removed and placed on a moving trolley 6. At this time, the weight of the turnout rail component is supported by each roller 8 and the limiting assembly. Then, the moving trolley 6 carries each turnout rail component through the right buffer chamber 3, the main cooling chamber 2, and the left buffer chamber 4 in sequence. The turnout rail component is cooled in the main cooling chamber 2. The right buffer chamber 3 is the entry end, and the left buffer chamber 4 is the exit end. After the cooling process of the turnout rail component is completed, the moving trolley 6 carries the turnout rail component away from the cooling chamber 1 to proceed with subsequent processes.

[0071] Initially, each lifting door 20 is closed to prevent cooling gas in the main cooling chamber 2 from directly diffusing into the right buffer chamber 3 and the left buffer chamber 4. When the moving trolley 6, carrying the turnout rail components, prepares for the cooling process, during its movement, the moving trolley 6 first pushes open the two insulation curtains 10 on the right buffer chamber 3 to both sides, allowing the moving trolley 6 and the turnout rail components to enter the right buffer chamber 3. Once the moving trolley 6 and the turnout rail components are fully inside the right buffer chamber 3, the two insulation curtains 10 on the right buffer chamber 3 close. At this time, the lifting door 20 near the right buffer chamber 3 opens, and then the moving trolley 6 and the turnout rail components enter the main cooling chamber 2. The lifting door 20 then closes. During the closing period, the cooling air in the main cooling chamber 2 will diffuse into the right buffer chamber 3. The insulation curtain 10 prevents the cold air in the right buffer chamber 3 from directly dissipating to the outside. When the next moving trolley 6 and turnout rail components enter the right buffer chamber 3, this part of the cooling air will provide initial heat dissipation for the turnout rail components, avoiding waste of resources. Since the cold air in the right buffer chamber 3 will not be completely dissipated during the interval between the opening and closing of the insulation curtain 10, the temperature difference between the right buffer chamber 3 and the main cooling chamber 2 is smaller than the temperature difference between the main cooling chamber 2 and the outside air. Therefore, the right buffer chamber 3 can reduce the loss of cold air in the main cooling chamber 2, further saving resources. The left buffer chamber 4 set on the left side is the same as the right buffer chamber 3.

[0072] The auxiliary rotating arm 13 moves with the moving trolley 6. When the auxiliary rotating arm 13 is inserted between the two insulation curtains 10, the moving trolley 6 stops moving to avoid the turnout rail components on the moving trolley 6 colliding with the insulation curtains 10. During the process of the auxiliary rotating arm 13 being inserted between the two insulation curtains 10, it drives the second magnet block 17 to move forward. During this process, the second magnet block 17 attracts the first magnet block 16. Then the main rotating arm 12 drives the auxiliary rotating arm 13 to rotate to the side. Thus, when the auxiliary rotating arm 13 pushes the insulation curtain 10 to the side, the side wall of the insulation curtain 10 is attracted to the second magnet block 17 by the first magnet block 16, thereby preventing the insulation curtain 10 from falling off the auxiliary rotating arm 13 when it pushes the curtain.

[0073] When the trolley 6 enters the main cooling chamber 2, it stops moving. At this time, the main rotating arm 12 and the auxiliary rotating arm 13 return to their initial positions. The cold air in the main cooling chamber 2 cools the turnout rail components. After cooling for a period of time, the trolley 6 moves forward, thus moving the turnout rail components together. Then, the rotating roller 15 on the front side of the trolley 6 collides with the abutment groove 23 on the side door panel body 22. During this process, the side door panel body 22 intercepts the trolley 6. The rotating roller 15 and the auxiliary rotating arm 13 cannot continue to move forward due to the interception of the side door panel body 22. Under the action of inertial force, the trolley 6 and the turnout rail components will continue to move forward, thereby compressing the spring 26. 26. To buffer the inertial force, during this process, the telescopic end of the electric actuator 29 retracts, causing the connecting plate 28 and multiple contact plates 27 to move downwards, away from the turnout rail component, without applying static friction to the turnout rail component. At this time, under the action of inertial force and guided by the roller 8, the turnout rail component will slide forward a certain distance, causing the contact plate 27 to be misaligned with the bottom of the turnout rail component. Then, the contact plate 27 moves upwards again, applying static friction to the turnout rail component. At this time, the moving trolley 6 still stops moving for a period of time, so that the cooling air can also fully cool and lower the temperature of this part of the turnout rail component, ensuring the uniformity of the cooling and lowering. During this process, the turnout rail component will not fall off the moving trolley 6.

[0074] After the previously blocked parts of the turnout rail components have cooled down, the moving trolley 6 moves forward again. During this process, the main rotating arm 12 and the auxiliary rotating arm 13 rotate in coordination. With the cooperation of the rotating roller 15 and the contact groove 23, the corresponding side door panel body 22 is pushed into the insertion groove 2, so that the moving trolley 6 can pass between the two side door panel bodies 22. Then the moving trolley 6 drives the turnout rail components to leave the main cooling chamber 2 and enter the left buffer chamber 4, and then leave from the left buffer chamber 4. The principle of the moving trolley 6 leaving the cooling chamber 1 is the same as the principle of entering the cooling chamber 1.

[0075] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A heat treatment process for turnout rail components, characterized in that, Includes the following steps: Step 1: Perform normalizing and annealing processes on the turnout rail components; Step 2: Heating the turnout rail components in a heating furnace; Step 3: Place the heated turnout rail components onto the mobile trolley (6) and prepare them to enter the cooling box (1) for cooling processing, thereby completing the entire quenching process; Step 4: The moving trolley (6) opens the heat preservation curtain (10) through the auxiliary rotating arm (13) and enters the right buffer chamber (3), and then passes through the main cooling chamber (2) and the left buffer chamber (4) in sequence. Step 5: After the trolley (6) leaves the left buffer chamber (4), transport the turnout rail components to the designated location, and then perform a tempering process on the turnout rail components. In step four, the trolley (6) moves toward the right buffer chamber (3) so that the two auxiliary rotating arms (13) can push open and separate the two heat insulation curtains (10) from the middle; In step four, when the auxiliary rotating arm (13) is inserted between the two heat insulation curtains (10), it drives the second magnet block (17) to move forward. During this process, the second magnet block (17) attracts the first magnet block (16). When the auxiliary rotating arm (13) pushes the heat insulation curtain (10) to the side, the side wall of the heat insulation curtain (10) is attracted to the second magnet block (17) through the first magnet block (16), thereby preventing the heat insulation curtain (10) from falling off the auxiliary rotating arm (13) when the auxiliary rotating arm (13) pushes the curtain. In step four, as the auxiliary rotating arm (13) moves forward, the second magnet (17) will be pulled towards the first spring (18) by the first magnet (16) and the heat preservation curtain (10). At this time, the second magnet (17) has a certain displacement stroke. When the auxiliary rotating arm (13) flips to the side, the second magnet (17) will move towards the front end of the auxiliary rotating arm (13) to prevent the second magnet (17) from falling off the first magnet (16), thereby preventing the heat preservation curtain (10) from falling off the auxiliary rotating arm (13). In step three, when the turnout rail component to be cooled is placed on the moving trolley (6), the telescopic end of the electric push rod (29) extends, thereby pushing the connecting plate (28) and multiple contact plates (27) upward until the multiple contact plates (27) contact the bottom of the turnout rail component, increasing the static friction. In step four, when the moving trolley (6) enters the main cooling chamber (2), it stops moving. At this time, the main rotating arm (12) and the auxiliary rotating arm (13) return to their initial positions. At this time, the cold air in the main cooling chamber (2) cools down the turnout rail components. In step four, after cooling down for a period of time, the trolley (6) moves forward again, thereby driving the turnout rail component to move together. Then, the rotating roller (15) on the front side of the trolley (6) will collide with the abutment groove (23) on the side door panel body (22). Under the action of inertial force and the guidance of the roller (8), the turnout rail component will slide forward a distance, thereby causing the abutment plate (27) to be misaligned with the bottom of the turnout rail component. In step four, after the previously blocked parts of the turnout rail components have cooled down, the moving trolley (6) moves forward again. During this process, the main rotating arm (12) and the auxiliary rotating arm (13) rotate in coordination under the action of the drive box. With the cooperation of the rotating roller (15) and the contact groove (23), the corresponding side door panel body (22) is pushed into the insertion groove, so that the moving trolley (6) can pass between the two side door panel bodies (22).

2. The heat treatment process for turnout rail components according to claim 1, characterized in that, In step three, each turnout rail component is placed on the moving trolley (6), where the weight of the turnout rail component is supported by each roller (8) and the limiting assembly.

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