A mobile tunnel kiln blank stacking system and a blank stacking method

Abstract

The present application relates to a kind of mobile tunnel kiln with blank system and blank method, solve the technical problem that mobile blanking machine in prior art is easy to cause brick blank deformation or collapse phenomenon when blanking the blank with high moisture content.It provides a kind of mobile tunnel kiln with blank system including mobile platform, brick blank conveying belt and blank transfer device are arranged on mobile platform, the inlet end of brick blank conveying belt is equipped with brick blank transfer machine, and brick blank transfer machine is used to move the brick blank on the brick blank conveying belt to the brick blank conveying belt, and blank transfer device is used to grab the brick blank on the brick blank conveying belt and blank it on the ring kiln bottom;Mobile platform is respectively arranged on the inside and outside of ring kiln bottom on walking support, and the up and down position of mobile platform on walking support is adjustable, and the bottom surface of mobile platform is used to keep the top surface of ring kiln bottom with set interval to enable mobile platform to cross the half blank stack of first set height on ring kiln bottom to realize partial stacking.

Description

Technical Field

[0001] This invention relates to the field of billet stacking equipment, and in particular to a billet stacking system and method for mobile tunnel kilns. Background Technology

[0002] A mobile tunnel kiln refers to a brick-sintering process system designed using a reverse-thinking approach, where the brick blanks remain stationary while the kiln body moves. Its core technology involves an arc-shaped kiln body moving along a circular track. The brick blanks to be fired are placed on the annular kiln bottom between the tracks in front of the kiln body. As the kiln body moves forward, it receives the brick blanks, sequentially completing the drying, preheating, firing, and cooling processes. After the kiln body moves, the finished bricks exposed outside the kiln's rear door can be loaded and transported from the open kiln bottom. In a mobile tunnel kiln, the kiln body is movable, and the fire moves synchronously with the kiln body, while the brick blanks remain stationary.

[0003] A mobile brick stacking machine is typically installed on the track. This machine moves along the track and stacks bricks sequentially on the bottom of the kiln before the kiln body moves forward and bricks are added. In existing technology, a common method is single-stage stacking. For example, the utility model patent with authorization announcement number CN203439707U discloses an automated brick stacking platform, which includes a platform, a conveyor belt, and a brick stacking robot mounted on the conveyor belt. Wheels are installed at the bottom of the platform. This utility model organically combines the brick stacking robot with the platform, moving along the circular track with the mobile kiln to perform the brick stacking operation, thus automating the stacking process, improving production efficiency, and reducing the labor intensity of workers. However, this automated brick stacking platform can only move unidirectionally along the circular track. This means that only one stack of bricks can be stacked at a time before moving forward to stack the next stack. When stacking bricks with high moisture content, this can easily cause the bottom bricks to deform and be damaged by the pressure from the upper bricks, and in severe cases, it can cause the stack to collapse, leading to the inability to continue subsequent production and reduced production efficiency. Summary of the Invention

[0004] This invention provides a brick stacking system and method for mobile tunnel kilns, which solves the technical problem that existing mobile brick stacking machines are prone to brick deformation or collapse when stacking bricks with high moisture content.

[0005] To solve the above problems, the present invention provides a billet stacking system and method for mobile tunnel kilns, which adopts the following technical solution:

[0006] A billet stacking system for a mobile tunnel kiln, comprising:

[0007] A mobile platform spanning the bottom of the annular kiln is provided. The mobile platform is equipped with a brick conveyor belt and a brick stacking and transfer device. The inlet end of the brick conveyor belt is equipped with a brick transfer machine. The brick transfer machine is used to move the bricks on the brick conveyor belt located inside the annular kiln bottom to the brick conveyor belt. The brick stacking and transfer device is used to grab the bricks on the brick conveyor belt and stack them on the bottom of the annular kiln.

[0008] Its features are,

[0009] The mobile platform is provided with walking supports on the inner and outer sides of the bottom of the annular kiln. The walking supports include two walking columns located sequentially on the front and rear sides in the direction of movement of the mobile platform and a walking beam connected between the tops of the two walking columns; a connecting beam is connected between the walking beams on the walking supports on the inner and outer sides of the mobile platform.

[0010] Each of the walking columns is equipped with a walking wheel at its bottom, and the walking wheel is used to be installed on the ground tracks on the inner and outer sides of the annular kiln bottom.

[0011] The vertical position of the mobile platform on the walking support is adjustable. The bottom surface of the mobile platform is used to maintain a set distance from the top surface of the annular kiln bottom so that the mobile platform can cross the half-brick stack of the first set height on the annular kiln bottom to achieve stacking in stages.

[0012] The billet transfer device is slidably mounted on the moving platform along the radial direction of the bottom of the annular kiln.

[0013] The beneficial effects of the above technical solution are as follows: The mobile platform is installed on the walking support, which drives the mobile platform to move along the ground track, making the walking structure more robust and stable. The brick stacking and transfer device is slidably assembled on the mobile platform and can slide radially along the bottom of the annular kiln. The brick stacking and transfer device can first stack one layer of bricks radially along the bottom of the annular kiln, then move in the opposite direction to the initial position and then move sequentially to stack the next layer of bricks, realizing layered brick stacking in the radial direction of the bottom of the annular kiln. A set distance is maintained between the bottom surface of the mobile platform and the top surface of the bottom of the annular kiln, so that after stacking half bricks with a first set height, the mobile platform can move across the half bricks in the opposite direction to the initial position in the circumferential direction of the bottom of the annular kiln and continue stacking bricks above the half bricks. In this way, the half bricks stacked first can naturally evaporate some moisture, improving the structural strength. When continuing to stack bricks on the half bricks, there will be no brick deformation or collapse. The maximum stacking height that can be maintained without deformation varies for different types of brick blanks. Therefore, the vertical position of the moving platform relative to the traveling support is adjustable. The height of the moving platform can be adjusted for different types of brick blanks to avoid the gap between the moving platform and the bottom of the annular kiln being too large relative to the height of the half-brick stack with the first set height, which would cause the brick stacking and transfer device to travel too far when transferring brick blanks.

[0014] Furthermore, the four corners of the mobile platform are slidably mounted on corresponding walking columns in the vertical direction; the mobile platform is connected to a lifting drive mechanism, which is used to drive the mobile platform to move up and down.

[0015] Furthermore, both the front and rear traveling columns are square tubular structures. The front and rear ends of the inner and outer sides of the moving platform are respectively provided with square docking slots corresponding to the cross-sectional shape of each traveling column. The docking slots are fastened to the outer wall of the corresponding traveling column. The lifting drive mechanism includes a rotating lead screw rotatably mounted in the inner cavity of each traveling column. The rotating lead screw is connected to a servo motor. A movable nut is threaded onto the rotating lead screw. Each traveling column has a moving groove extending vertically on its side wall corresponding to the docking slot. The two side walls of the docking slot of the moving platform each have insertion slots penetrating the moving platform vertically. Two connecting plates extending vertically are connected to the movable nut. The connecting plates pass through the corresponding moving grooves and are inserted into the corresponding insertion slots. Connecting bolts pass through the side wall adjacent to the insertion slot on the moving platform and through the corresponding connecting plates to fix the connecting plates to the moving platform.

[0016] The beneficial effects of the above technical solution are: the docking slot is fastened to the traveling column, the movable nut in the inner cavity of the traveling column is inserted into the insertion slot on the traveling platform through the connecting plate and fixedly connected to the traveling platform through the connecting bolts. The connection method is firm and reliable. After the movable nut is fixedly connected to the traveling platform, rotating the screw drives the movable nut to move, which can drive the traveling platform to move up and down. The moving drive method of the traveling platform is reliable.

[0017] Furthermore, the mobile platform is provided with a sliding groove extending radially along the bottom of the annular kiln, and a sliding block is slidably assembled in the sliding groove. The billet transfer device is installed on the sliding block. A sliding drive mechanism is connected to the sliding block, which is used to drive the sliding block to move back and forth along the extension direction of the sliding groove.

[0018] Furthermore, the sliding drive mechanism includes a linear drive screw extending radially along the bottom of the annular kiln, the linear drive screw passing through the sliding block and threadedly connected to the sliding block, and the linear drive screw being driven by a servo drive motor.

[0019] Furthermore, the billet transfer device is a billet manipulator.

[0020] The beneficial effects of the above technical solution are: the stacking robot can turn at multiple angles, move flexibly, and can reliably grasp and transfer the brick blanks.

[0021] Furthermore, the brick transfer machine is installed on the traveling beam of the traveling support located inside the mobile platform.

[0022] The beneficial effects of the above technical solution are: the brick transfer machine is directly installed on the traveling beam of the traveling support, and the traveling support serves as the support for the brick transfer machine. There is no need to set up a separate support for the brick transfer machine on the inside of the moving platform, which reduces the counterweight on the inside of the moving platform and makes the force on the inside and outside of the moving platform more even.

[0023] A method for stacking blanks includes the following steps:

[0024] S1. The traveling support drives the mobile platform to walk along the ground track to a stacking area on the circumference of the bottom of the annular kiln and stops moving. The location of this stacking area is defined as the first initial position. The billet transfer device moves on the mobile platform to the outermost part of the bottom of the annular kiln. The location of the billet transfer device is defined as the second initial position.

[0025] S2. The brick blank transfer machine transfers the brick blanks on the brick blank conveyor belt to the brick blank conveyor belt in sequence. The brick blanks on the brick blank conveyor belt are conveyed towards the radial outer side of the annular kiln bottom until brick blanks are laid at the positions of each brick stacking station on the brick blank conveyor belt corresponding to the radial direction of the annular kiln bottom.

[0026] S3. The brick stacking and transfer device grabs a layer of brick blanks on the brick blank conveyor belt and transfers the layer of brick blanks to the bottom of the annular kiln.

[0027] S4. The stacking and transfer device moves from the outside to the inside along the radial direction of the bottom of the annular kiln to the next stacking station. Step S3 is repeated each time the device moves to the next station until a layer of bricks is laid on each stacking station in the radial direction of the stacking area. Then the stacking and transfer device moves to the second initial position.

[0028] S5. Repeat steps S2, S3, and S4 until all the blanks at each blank stacking station in the radial direction of the stacking area are stacked into half-blanks with a first set height.

[0029] S6. The traveling support moves sequentially on the ground track in the direction away from the mobile tunnel kiln to the next stacking area on the circumference of the bottom of the annular kiln. Each time it moves to the corresponding stacking area, steps S2, S3, S4, and S5 are repeated until each stacking area on the circumference of the bottom of the annular kiln is stacked with half-bulks of the first set height.

[0030] S7. The traveling support moves along the ground track in the direction close to the mobile tunnel kiln to the first initial position on the circumference of the bottom of the annular kiln and stops moving. Repeat steps S2, S3, S4, S5, and S6 until the stacks of billets in each stacking area on the circumference of the bottom of the annular kiln are stacked into complete stacks with a second set height.

[0031] The beneficial effects of the above technical solution are as follows: The brick stacking and transfer device stacks one layer of bricks radially along the bottom of the annular kiln and then returns to the second initial position to stack the second layer of bricks, achieving layered stacking. This allows the previously stacked bricks to dry naturally during the stacking of subsequent bricks, improving structural strength. When stacking subsequent bricks, the previously stacked bricks will not deform or collapse. After each stacking, the brick stacking and transfer device moves to the second initial position near the outer side of the moving platform, adding a certain amount of counterweight to the outer side of the moving platform, thus ensuring the platform moves smoothly during movement. The pressure on both sides is relatively balanced, making the movement of the moving platform more stable and the force on each part driving the moving platform more even. After the stacking and transfer device stacks half-bricks of the first set height in the circumference of the bottom of the annular kiln in sequence with the movement of the moving platform, the moving platform returns to the first initial position and continues to stack on top of the previously stacked half-bricks. In this way, the half-bricks that have been stacked first can also be naturally dried during the stacking of subsequent bricks. The structural strength of the half-bricks that have been stacked first is improved, effectively avoiding the occurrence of brick deformation, crushing, and brick stack collapse. Attached Figure Description

[0032] The above and other objects, features, and advantages of exemplary embodiments of the present invention will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of the invention are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0033] Figure 1 This invention provides a schematic diagram of the structure of a billet stacking system for a mobile tunnel kiln.

[0034] Figure 2 A simplified diagram of the connection structure between the mobile platform and the walking support in a mobile tunnel kiln billet stacking system provided by the present invention;

[0035] Figure 3 This is a top view of a billet stacking system for a mobile tunnel kiln provided by the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Outer front traveling column; 2. Outer traveling beam; 3. Stacking robot; 4. Moving platform; 5. Traveling wheels; 6. Brick blank transfer machine; 7. Connecting crossbeam; 8. Servo motor; 9. Rotating screw; 10. Moving nut; 11. Connecting plate; 12. Connecting bolt; 13. Outer rear traveling column; 14. Inner front traveling column; 15. Inner rear traveling column; 16. Sliding groove; 17. Brick blank conveyor belt; 18. Brick blank conveyor belt; 19. Annular kiln bottom; 20. Inner traveling beam. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] like Figure 1 and Figure 3 As shown, a billet stacking system for a mobile tunnel kiln includes a mobile platform 4 and a traveling frame set across the annular kiln bottom 19 of the mobile tunnel kiln. The traveling frame includes an inner traveling support located inside the annular kiln bottom 19 and an outer traveling support located outside the annular kiln bottom 19. The inner traveling support includes an inner front traveling column 14, an inner rear traveling column 15, and an inner traveling beam 20 connecting the tops of the inner front traveling column 14 and the inner rear traveling column 15. The outer traveling support includes an outer front traveling column 1, an outer rear traveling column 13, and an outer traveling beam 2 connecting the tops of the outer front traveling column 1 and the outer rear traveling column 13. A connecting beam 7 connects the outer traveling beam 2 and the inner traveling beam 20.

[0040] The inner front traveling column 14, inner rear traveling column 15, outer front traveling column 1, and outer rear traveling column 13 are all square tube structures. Square docking slots are provided at the four corners of the moving platform 4. Each docking slot has two docking sidewalls. Each docking slot is respectively fastened to the outer sidewall of the corresponding inner front traveling column 14, inner rear traveling column 15, outer front traveling column 1, and outer rear traveling column 13. The connection method between the inner front traveling column 14, inner rear traveling column 15, outer front traveling column 1, and outer rear traveling column 13 and the corresponding insertion slots on the moving platform 4 is the same.

[0041] The connection method between the inner rear traveling column 15 and the mobile platform 4 is now described using the example of the inner rear traveling column 15. Figure 2As shown, the inner rear traveling column 15 has movable slots extending vertically on its two opposite side walls of the docking slot. A rotating screw 9 extending vertically is rotatably mounted within the inner cavity of the inner rear traveling column 15. A movable nut 10 is threaded onto the rotating screw 9, forming a ball screw and nut structure. The rotating screw 9 is connected to the servo motor 8. Two connecting plates 11 are provided on the movable nut 10, extending out of the inner rear traveling column 15 through the movable slots on its two side walls. The two docking side walls of the docking slot corresponding to the inner rear traveling column 15 on the moving platform 4 each have an opening facing the inner rear traveling column 15 and penetrating the moving platform 4 vertically. The connecting plates 11 are inserted into the corresponding insertion slots. Connecting bolts 12 pass through the side wall adjacent to the insertion slot on the moving platform 4 and through the corresponding connecting plates 11 to fix the connecting plates 11 to the moving platform 4.

[0042] like Figure 3 As shown, the mobile platform 4 has a sliding groove 16 extending radially along the bottom of the annular kiln 19. A sliding block is slidably assembled within the sliding groove 16, and a billet stacking and transfer device is mounted on the sliding block. The billet stacking and transfer device is a billet stacking robot 3, which is a commercially available product. The sliding block is connected to a drive mechanism, which includes a drive screw extending along the length of the sliding groove 16. A drive nut is embedded in the sliding block, and the drive screw passes through the drive nut and is threadedly connected to it, forming a ball screw and nut structure. The drive screw is connected to a servo motor, which drives the drive screw to reciprocate, thereby driving the sliding block and the billet stacking robot 3 on the sliding block to reciprocate.

[0043] The mobile platform 4 is equipped with a brick blank conveyor belt 17, and a brick blank transfer machine 6 is installed on the inner traveling beam 20. The brick blank transfer machine 6 is used to grab brick blanks located on the annular brick blank conveyor belt 18 located inside the annular kiln bottom 19 and transfer the brick blanks to the brick blank conveyor belt 17. A detection photoelectric sensor is installed on the connecting crossbeam 7. The detection photoelectric sensor is used to detect the status of the brick blanks on the brick blank conveyor belt 17. The detection photoelectric sensor is connected to the PLC control module. When the detection photoelectric sensor detects that there are missed brick blanks at the position on the brick blank conveyor belt 17 that have been grabbed by the stacking robot 3, it sends a signal to the PLC control module to control the equipment to stop.

[0044] A method for stacking blanks includes the following steps:

[0045] S1. The traveling support drives the mobile platform 4 to walk along the ground track to a stacking area on the circumference of the annular kiln bottom 19 and stops moving. The location of the stacking area is defined as the first initial position. The billet transfer device moves on the mobile platform 4 to the outermost part of the annular kiln bottom 19. The location of the billet transfer device is defined as the second initial position.

[0046] S2. The brick blank transfer machine transfers the brick blanks on the brick blank conveyor belt 18 to the brick blank conveyor belt 17 in sequence. The brick blanks on the brick blank conveyor belt 17 are conveyed towards the radial outer side of the annular kiln bottom 19 until brick blanks are laid at the positions of each brick stacking station on the brick blank conveyor belt 17 corresponding to the radial side of the annular kiln bottom 19.

[0047] S3. The brick stacking and transfer device grabs a layer of brick blanks on the brick blank conveyor belt 17 and transfers the layer of brick blanks to the bottom of the annular kiln 19.

[0048] S4. The stacking and transfer device moves from the outside to the inside along the radial direction of the annular kiln bottom 19 to the next stacking station. Step S3 is repeated each time the device moves to the next station until a layer of bricks is laid on each stacking station in the radial direction of the stacking area. Then the stacking and transfer device moves to the second initial position.

[0049] S5. Repeat steps S2, S3, and S4 until all the blanks at each blank stacking station in the radial direction of the stacking area are stacked into half-blanks with a first set height.

[0050] S6. The traveling support moves along the ground track in the direction away from the mobile tunnel kiln to the next stacking area 19 circumferences above the bottom of the annular kiln. Each time it moves to the corresponding stacking area, steps S2, S3, S4, and S5 are repeated until each stacking area 19 circumferences above the bottom of the annular kiln is stacked with half-bulks of the first set height.

[0051] S7. The traveling support moves along the ground track in the direction close to the mobile tunnel kiln to the first initial position 19 circumferences upward from the bottom of the annular kiln and stops moving. Repeat steps S2, S3, S4, S5, and S6 until the stacks of billets in each stacking area 19 circumferences upward from the bottom of the annular kiln are stacked into complete stacks with a second set height.

[0052] The aforementioned "half-stack" does not refer to the stack of billets being stacked to half the height of a complete stack, but rather to the stack being less than the height of a complete stack.

[0053] This invention enables the stacking of brick blanks in stages, effectively avoiding deformation and crushing of the brick blanks stacked earlier when stacking brick blanks with high moisture content, thus ensuring the quality of brick blank forming.

[0054] In this embodiment, the mobile platform is connected to the movable nut. The mobile platform moves up and down on the traveling support by rotating the lead screw to drive the movable nut. In other embodiments, the mobile platform can also move up and down on the traveling support by other drive mechanisms that can achieve reciprocating linear motion. For example, a hydraulic push rod can be set between the traveling column and the mobile platform. The hydraulic push rod pushes the mobile platform to move up and down. Alternatively, a rack extending in the vertical direction can be fixedly installed on the traveling column, and a gear can be rotated at the position where the mobile platform and the traveling column are connected. When the gear rotates, it moves up and down along the rack.

[0055] In this embodiment, the brick transfer machine is installed on the inner walking beam. In other embodiments, the brick transfer machine may not be installed on the inner walking beam. In this case, an independent support frame is set on the side of the inner walking beam, and the brick transfer machine is installed on the support frame.

[0056] Based on the above description in this specification, those skilled in the art will also understand that the following terms used, such as "upper," "lower," "front," "rear," "left," "right," "width," "horizontal," "top," "bottom," "inner," and "outer" (these terms need to be adjusted and replaced according to the specific case), are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as a limitation on the present invention.

[0057] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A billet stacking system for a mobile tunnel kiln, comprising: A mobile platform spanning the bottom of the annular kiln is provided. The mobile platform is equipped with a brick conveyor belt and a brick stacking and transfer device. The inlet end of the brick conveyor belt is equipped with a brick transfer machine. The brick transfer machine is used to move the bricks on the brick conveyor belt located inside the annular kiln bottom to the brick conveyor belt. The brick stacking and transfer device is used to grab the bricks on the brick conveyor belt and stack them on the bottom of the annular kiln. Its features are, The mobile platform is provided with walking supports on the inner and outer sides of the bottom of the annular kiln. The walking supports include two walking columns located sequentially on the front and rear sides in the direction of movement of the mobile platform and a walking beam connected between the tops of the two walking columns; a connecting beam is connected between the walking beams on the walking supports on the inner and outer sides of the mobile platform. Each of the walking columns is equipped with a walking wheel at its bottom, and the walking wheel is used to be installed on the ground tracks on the inner and outer sides of the annular kiln bottom. The vertical position of the mobile platform on the walking support is adjustable. The bottom surface of the mobile platform is used to maintain a set distance from the top surface of the annular kiln bottom so that the mobile platform can cross the half-brick stack of the first set height on the annular kiln bottom to achieve stacking in stages. The billet transfer device is slidably mounted on the moving platform along the radial direction of the bottom of the annular kiln. The four corners of the mobile platform are slidably mounted on corresponding walking columns in the vertical direction; the mobile platform is connected to a lifting drive mechanism, which is used to drive the mobile platform to move up and down. Both the front and rear traveling columns are square tubular structures. The front and rear ends of the inner and outer sides of the moving platform are respectively provided with square docking slots corresponding to the cross-sectional shape of each traveling column. The docking slots are fastened to the outer side wall of the corresponding traveling column. The lifting drive mechanism includes a rotating lead screw that is rotatably assembled in the inner cavity of each traveling column. The rotating lead screw is connected to a servo motor. A movable nut is threaded onto the rotating lead screw. Each traveling column has a moving groove extending in the vertical direction on the side wall corresponding to the docking slot. The two side walls of the docking slot of the moving platform have insertion slots that penetrate the moving platform in the vertical direction. Two connecting plates extending in the vertical direction are connected to the movable nut. The connecting plates pass through the corresponding moving grooves and are inserted into the corresponding insertion slots. The connecting bolts pass through the side wall of the moving platform adjacent to the insertion slots and through the corresponding connecting plates to fix the connecting plates to the moving platform.

2. The billet stacking system for a mobile tunnel kiln according to claim 1, characterized in that, The mobile platform has a sliding groove extending radially along the bottom of the annular kiln. A sliding block is slidably assembled in the sliding groove, and the billet transfer device is installed on the sliding block. A sliding drive mechanism is connected to the sliding block, which drives the sliding block to move back and forth along the extension direction of the sliding groove.

3. The mobile tunnel kiln billet stacking system according to claim 2, characterized in that, The sliding drive mechanism includes a linear drive screw extending radially along the bottom of the annular kiln. The linear drive screw passes through the sliding block and is threadedly connected to the sliding block. The linear drive screw is connected to a servo drive motor.

4. A billet stacking system for a mobile tunnel kiln according to any one of claims 1-3, characterized in that, The billet transfer device is a billet manipulator.

5. A billet stacking system for a mobile tunnel kiln according to any one of claims 1-3, characterized in that, The brick transfer machine is installed on the traveling beam of the traveling support located inside the mobile platform.

6. A method for stacking billets, using the billet stacking system for a mobile tunnel kiln as described in any one of claims 1-3, characterized in that, Includes the following steps: S1. The traveling support drives the mobile platform to walk along the ground track to a stacking area on the circumference of the bottom of the annular kiln and stops moving. The location of this stacking area is defined as the first initial position. The billet transfer device moves to the outermost edge of the bottom of the annular kiln on the mobile platform, and the position of the billet transfer device at this location is defined as the second initial position. S2. The brick blank transfer machine transfers the brick blanks on the brick blank conveyor belt to the brick blank conveyor belt in sequence. The brick blanks on the brick blank conveyor belt are conveyed towards the radial outer side of the annular kiln bottom until brick blanks are laid at the positions of each brick stacking station on the brick blank conveyor belt corresponding to the radial direction of the annular kiln bottom. S3. The brick stacking and transfer device grabs a layer of brick blanks on the brick blank conveyor belt and transfers the layer of brick blanks to the bottom of the annular kiln. S4. The stacking and transfer device moves from the outside to the inside along the radial direction of the bottom of the annular kiln to the next stacking station. Step S3 is repeated each time the device moves to the next station until a layer of bricks is laid on each stacking station in the radial direction of the stacking area. Then the stacking and transfer device moves to the second initial position. S5. Repeat steps S2, S3, and S4 until all the blanks at each blank stacking station in the radial direction of the stacking area are stacked into half-blanks with a first set height. S6. The traveling support moves sequentially on the ground track in the direction away from the mobile tunnel kiln to the next stacking area on the circumference of the bottom of the annular kiln. Each time it moves to the corresponding stacking area, steps S2, S3, S4, and S5 are repeated until each stacking area on the circumference of the bottom of the annular kiln is stacked with half-bulks of the first set height. S7. The traveling support moves along the ground track in the direction close to the mobile tunnel kiln to the first initial position on the circumference of the bottom of the annular kiln and stops moving. Repeat steps S2, S3, S4, S5, and S6 until the stacks of billets in each stacking area on the circumference of the bottom of the annular kiln are stacked into complete stacks with a second set height.

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