A continuous belt conveyor structure for discharging slag in the reverse slope of a spiral ramp and its installation method

Abstract

The present invention provides a structure and installation method of a continuous belt conveyor for discharging slag in a reverse slope of a spiral ramp, which relates to the technical field of slag discharging of shield machines and TBMs. A structure of a continuous belt conveyor for discharging slag in a reverse slope of a spiral ramp includes a belt, an external belt drive outside the tunnel, and a plurality of belt drives at turning points. The external belt drive is fixedly installed on one side outside the tunnel opening, and the plurality of belt drives at turning points are respectively fixedly installed on one side inside the tunnel opening; in the present invention, the adjustable chain and sector bracket at the turning section can raise the height of the idler bracket at the turning section close to the outside of the turning section, and utilize the gravity of the conveyor belt and the transported material to generate the centripetal force when the belt turns to transport materials, accelerating the speed of material transportation in the belt. Compared with relying solely on the movement of the belt, the transportation efficiency of this application is better. Moreover, by installing limit idlers at the ends of each belt limit frame, the limit idlers can limit the belt, restrict the deviation range of the belt, and prevent the belt from folding and turning over.

Description

Technical Field

[0001] The present invention relates to the technical field of shield and TBM slag discharging, and more specifically, to a continuous belt conveyor structure and installation method for reverse slope slag discharging on a spiral ramp. Background Art

[0002] Currently, there is no continuous downhill turning tunnel for TBM tunneling construction. The conventional TBM slag discharging belt conveyor cannot achieve reverse slope slag discharging on the TBM spiral ramp, resulting in poor slag discharging efficiency. During the slag discharging process, since all existing equipment uses belts for transportation, the materials on the belt are prone to leakage during transportation. Moreover, due to the relatively curved route in the tunnel, the belt may be folded or turned over due to the installation position during transportation, thereby preventing the belt from transporting materials normally and affecting the transportation efficiency. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a continuous belt conveyor structure and installation method for reverse slope slag discharging on a spiral ramp, which solves the problems that the existing equipment cannot adapt to different environments and has poor efficiency during transportation.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A continuous belt conveyor structure for reverse slope slag discharging on a spiral ramp, comprising a belt, an external tunnel belt drive, and a plurality of belt drives at turning points. The external tunnel belt drive is fixedly installed on one side outside the tunnel entrance, and the plurality of belt drives at turning points are respectively fixedly installed on one side inside the tunnel entrance. The belt is arranged inside the external tunnel belt drive and the plurality of belt drives at turning points;

[0006] Adjustable chains and first chains are respectively installed on the tunnel walls between the belt drives at turning points and the external tunnel belt drive. Both ends of each adjustable chain are respectively connected to a second chain and a third chain. Non-adjustable cross braces are installed at the lower ends of the first chains at both ends of the tunnel entrance, and adjustable cross braces are installed at the lower ends of each third chain in the middle of the tunnel entrance. Upper and lower ends of each adjustable cross brace and non-adjustable cross brace are respectively fixedly installed with upper idler assemblies and lower idler assemblies for supporting the belt.

[0007] Preferably, each of the lower idler assemblies and upper idler assemblies is composed of a plurality of idlers, and the plurality of idlers are assembled into an arc shape after assembly.

[0008] Preferably, a chain mounting bracket is fixedly installed at the upper ends of each first chain and second chain through chain positioning bolts, and the end of the chain mounting bracket is fixedly installed on the tunnel wall through expansion bolts.

[0009] Preferably, a locking nut is fixedly installed at the lower end of the second chain on the upper side, and a shackle is fixedly installed at the upper end of the third chain on the lower side. A ring screw is installed at the end of the shackle, and an adjustable chain is installed between the ring screw and the locking nut.

[0010] Preferably, one side of the adjustable cross brace and the non-adjustable cross brace is fixedly connected to the third chain on the lower side. On the other side of the adjustable cross brace, an adjustable cross brace connecting bolt is fixedly installed. A sector bracket is rotatably installed at the end of the adjustable cross brace connecting bolt. An arc groove for the movement of the adjustable cross brace connecting bolt is provided in the sector bracket. Another expansion bolt is fixedly installed on the other side of the non-adjustable cross brace and the sector bracket, and each expansion bolt is fixedly connected to the tunnel wall.

[0011] Preferably, belt limiting frames are respectively fixedly installed on both sides of the upper surface of the adjustable cross brace.

[0012] Preferably, the belt drive outside the tunnel includes a drive bracket. A drive motor is fixedly installed on one side of the upper surface of the drive bracket, and a drive roller is fixedly installed on the other side of the upper surface of the drive bracket.

[0013] Preferably, the belt drive at the turning point includes a stepped belt support inside the tunnel. The stepped belt support inside the tunnel has multiple layers. An upper idler assembly is installed on the upper layer of the stepped belt support inside the tunnel, and a lower idler assembly is installed on the lower layer of the stepped belt support inside the tunnel.

[0014] Preferably, belt limiting frames are provided at the upper ends of the drive bracket and the stepped belt support inside the tunnel;

[0015] A limiting idler is fixedly installed at the end of each belt limiting frame through a limiting frame bolt.

[0016] A method for installing the structure of a continuous belt conveyor for discharging slag in a reverse slope of a spiral rampway includes the following steps:

[0017] S1: Multiple drives need to be arranged for the spiral belt. The position of the belt drive at the turning point is arranged before the starting point of the turning section along the slag discharging direction;

[0018] S2: The belt drive outside the tunnel and the stepped belt support inside the tunnel are installed on the right side in the direction of entering the tunnel;

[0019] S3: Installation method of the stepped belt support inside the tunnel: First, the right end of the non-adjustable cross brace is fixed to the tunnel wall through an expansion bolt, and the left end is suspended from the right side of the top of the tunnel wall through a first chain. The suspension method is to pre-drill bolt holes on the chain mounting frame, fix the chain mounting frame above the tunnel wall through an expansion bolt, and connect the other end of the chain mounting frame to the first chain through a chain positioning bolt;

[0020] S4: The belt drive at the turning point consists of an adjustable chain, a belt limiting frame, a lower idler assembly, an upper idler assembly, an adjustable cross brace, and a sector bracket. The adjustable cross brace is connected to the sector bracket by an adjustable cross brace connecting bolt. An arc groove is provided on the sector bracket. When adjusting the angle of the belt rack, loosen the adjustable cross brace connecting bolt, and the adjustable cross brace moves along the track of the arc groove. The adjustable chain consists of a second chain, a third chain, a shackle, a band screw, and a locking nut. The length of the adjustable chain is adjusted by rotating the locking nut, thereby adjusting the angle of the belt bracket. After the angle adjustment is completed, tighten the adjustable cross brace connecting bolt. The belt limiting frame is installed above the belt, and the limiting idler is connected to the belt limiting frame by a limiting frame bolt. The belt limiting frame and the limiting idler can limit the range of belt deviation and prevent the belt from folding and turning over;

[0021] S5: After passing through the turning section, install the belt drive before the starting point of the next turning section along the slag discharge direction, and cycle through steps S1 to S4.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention is composed of a spiral belt, a belt drive, an adjustable cross brace, a sector bracket, a belt limiting frame, an adjustable belt chain and other main components. The drive position of the turning section is arranged before the starting point of the turning section along the slag discharge direction, so that the tension of the spiral belt is minimized when entering the bend.

[0024] 2. By setting the lower idler assembly and the upper idler assembly as arcs and installing them in the adjustable cross brace, the belt drive at the turning point and the non-adjustable cross brace respectively, the belt is lifted to prevent the belt from falling off below, so that continuous transportation of the belt can be realized in cooperation with the drive of the belt drive outside the tunnel. Among them, the upper idler assembly adopts a four-roller type, and the lower idler assembly adopts a V-shaped double-roller type, which helps the automatic centering adjustment of the conveyor belt.

[0025] 3. The adjustable chain and the sector bracket in the turning section can raise the height of the idler bracket in the turning section close to the outside of the turning section, and use the gravity of the conveyor belt and the transported material to generate the centripetal force when the belt turns to transport materials, accelerating the speed of material transportation in the belt. Compared with relying solely on the movement of the belt, the transportation efficiency of this application is better;

[0026] Rotate the band screw and cooperate with the locking nut to adjust the position of the first chain in the adjustable chain. When the length of the first chain is adjusted, the position of the adjustable cross brace moving in the arc groove through the adjustable cross brace connecting bolt is changed, so that the angle of the adjustable cross brace is inclined, so that the lower idler assembly and the upper idler assembly on the adjustable cross brace are inclined at an angle. By setting a plurality of lower idler assemblies and upper idler assemblies in this application and switching the angles of the plurality of lower idler assemblies and upper idler assemblies, the passing belt is spirally adjusted to realize the transmission of internal materials by the spiral ramp.

[0027] 4. By installing limit rollers at the ends of each belt limit frame, the limit rollers can limit the belt, restrict the range of belt deviation, and prevent the belt from folding and turning over. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is the overall layout drawing of the belt drive of the present invention.

[0029] Figure 2 This is the installation drawing of the belt drive structure of the present invention.

[0030] Figure 3 This is the installation drawing of the belt support structure in the stepping tunnel of the present invention.

[0031] Figure 4 This is the installation drawing of the belt structure in the turning section of the present invention.

[0032] Figure 5 This is the installation drawing of the belt structure in the straight section of the present invention.

[0033] Figure 6 This is the structure drawing of the adjustable chain of the present invention.

[0034] Figure 7 This is the structure drawing of the belt limit support in the turning section of the present invention.

[0035] Figure 8 This is the installation structure drawing of the chain of the present invention;

[0036] Figure 9 is Figure 8 the left side view of.

[0037] In the figure: 1. Belt; 2. Belt drive outside the tunnel; 3. Belt drive at the turning point; 4. Drive support; 5. Drive motor; 6. Drive roller; 7. Belt support in the stepping tunnel; 8. Lower roller assembly; 9. Upper roller assembly; 10. Adjustable cross brace; 11. Adjustable cross brace connection bolt; 12. Arc groove; 13. Sector support; 14. Non-adjustable cross brace; 15. Belt limit frame; 16. Adjustable chain; 17. First chain; 1701. Second chain; 1702. Third chain; 18. Shackle; 19. Band loop screw; 20. Locking nut; 21. Limit roller; 22. Limit frame bolt; 23. Chain mounting bracket; 24. Expansion bolt; 25. Chain positioning bolt. DETAILED DESCRIPTION OF THE INVENTION

[0038] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] As Figures 1 to 9 shown, a continuous belt conveyor structure for discharging slag in a reverse slope of a spiral ramp includes a belt 1, an external belt drive 2 in the tunnel and a plurality of belt drives 3 at turning points. The external belt drive 2 in the tunnel is fixedly installed on one side outside the tunnel opening, and the plurality of belt drives 3 at turning points are respectively fixedly installed on one side inside the tunnel opening. The belt 1 is arranged inside the external belt drive 2 in the tunnel and the plurality of belt drives 3 at turning points.

[0040] Adjustable chains 16 and first chains 17 are respectively installed on the tunnel walls between the belt drives 3 at turning points and the external belt drive 2 in the tunnel. Each end of each adjustable chain 16 is respectively connected with a second chain 1701 and a third chain 1702. Non-adjustable cross braces 14 are installed at the lower ends of the first chains 17 at both ends of the tunnel opening, and adjustable cross braces 10 are installed at the lower ends of each third chain 1702 in the middle of the tunnel opening. Upper idler assemblies 9 and lower idler assemblies 8 for supporting the belt 1 are respectively fixedly installed at the upper and lower ends of each adjustable cross brace 10 and non-adjustable cross brace 14.

[0041] In this embodiment, each lower idler assembly 8 and upper idler assembly 9 are composed of a plurality of idlers, and the plurality of idlers are assembled into an arc shape. By setting the lower idler assembly 8 and the upper idler assembly 9 into an arc shape and respectively installing them inside the adjustable cross brace 10, the belt drive 3 at the turning point and the non-adjustable cross brace 14, the belt 1 is lifted to prevent the belt 1 from falling below. Thus, in cooperation with the drive of the external belt drive 2 in the tunnel, continuous transportation of the belt 1 can be realized. Among them, the upper idler assembly 9 adopts a four-roller type, and the lower idler assembly 8 adopts a V-shaped double-roller type, which helps the automatic centering adjustment of the conveyor belt.

[0042] It should be noted that chain mounting brackets 23 are fixedly installed at the upper ends of each first chain 17 and second chain 1701 through chain positioning bolts 25, and the ends of the chain mounting brackets 23 are fixedly installed on the tunnel wall through expansion bolts 24.

[0043] When specifically setting, a locking nut 20 is fixedly installed at the lower end of the upper second chain 1701, a shackle 18 is fixedly installed at the upper end of the lower third chain 1702, a ring screw 19 is installed at the end of the shackle 18, and an adjustable chain 16 is installed between the ring screw 19 and the locking nut 20.

[0044] It can be understood that in the present application, one side of the adjustable cross brace 10 and the non-adjustable cross brace 14 is fixedly connected to the third chain 1702. On the other side of the adjustable cross brace 10, an adjustable cross brace connection bolt 11 is fixedly installed. At the end of the adjustable cross brace connection bolt 11, a sector bracket 13 is rotatably installed. An arc groove 12 for the movement of the adjustable cross brace connection bolt 11 is provided in the sector bracket 13. On the other side of the non-adjustable cross brace 14 and the sector bracket 13, another expansion bolt 24 is fixedly installed, and each expansion bolt 24 is fixedly connected to the tunnel wall.

[0045] Wherein, on both sides of the upper surface of the adjustable cross brace 10, belt limit brackets 15 are respectively fixedly installed.

[0046] In this embodiment, the belt drive 2 outside the tunnel includes a drive bracket 4. On one side of the upper surface of the drive bracket 4, a drive motor 5 is fixedly installed. On the other side of the upper surface of the drive bracket 4, a drive roller 6 is fixedly installed. By starting the drive motor 5 to drive the drive roller 6 to rotate, the belt 1 is driven to transmit under the limitation of the belt drive 3 at multiple turning points.

[0047] It should be noted that the belt drive 3 at the turning point includes a step-in tunnel inner belt bracket 7. The step-in tunnel inner belt bracket 7 is provided with multiple layers. An upper idler assembly 9 is installed on the upper layer of the step-in tunnel inner belt bracket 7, and a lower idler assembly 8 is installed on the lower layer of the step-in tunnel inner belt bracket 7.

[0048] When specifically setting, belt limit brackets 15 are provided at the upper ends of both the drive bracket 4 and the step-in tunnel inner belt bracket 7. At the end of each belt limit bracket 15, a limit idler 21 is fixedly installed through a limit bracket bolt 22. By installing a limit idler 21 at the end of each belt limit bracket 15, the limit idler 21 can limit the belt, restrict the belt deviation range, and prevent the belt from folding and turning over.

[0049] A method for installing a structure of a spiral ramp reverse slope slag discharging continuous belt conveyor includes the following steps:

[0050] S1: Multiple drives need to be arranged for the spiral belt 1. The position of the belt drive 3 at the turning point is arranged before the starting point of the turning section along the slag discharging direction;

[0051] S2: The belt drive 2 outside the tunnel and the step-in tunnel inner belt bracket 7 are installed on the right side of the tunnel entry direction;

[0052] S3: Installation method of the step-in tunnel inner belt bracket 7: First, the right end of the non-adjustable cross brace 14 is fixed to the tunnel wall through an expansion bolt 24, and the left end is suspended from the right side of the top of the tunnel wall through a first chain 17. The suspension method is to pre-process bolt holes on the chain mounting bracket 23, and the chain mounting bracket 23 is fixed above the tunnel wall through an expansion bolt 24. The other end of the chain mounting bracket 23 is connected to the first chain 17 through a chain positioning bolt 25;

[0053] S4: The belt drive 3 at the turning point consists of an adjustable chain 16, a belt limiting frame 15, a lower idler assembly 8, an upper idler assembly 9, an adjustable cross brace 10, and a sector bracket 13. The adjustable cross brace 10 is connected to the sector bracket 13 by an adjustable cross brace connecting bolt 11. An arc groove 12 is provided on the sector bracket 13. When adjusting the angle of the belt rack, loosen the adjustable cross brace connecting bolt 11, and the adjustable cross brace 10 moves along the trajectory of the arc groove 12. The adjustable chain 16 consists of a second chain 1701, a third chain 1702, a shackle 18, a band screw 19, and a locking nut 20. The length of the adjustable chain 16 is adjusted by rotating the locking nut 20, thereby adjusting the angle of the belt bracket. After the angle adjustment is completed, tighten the adjustable cross brace connecting bolt 11. The belt limiting frame 15 is installed above the belt. The limiting idler 21 is connected to the belt limiting frame 15 by a limiting frame bolt 22. The belt limiting frame 15 and the limiting idler 21 can limit the deviation range of the belt and prevent the belt from folding and turning over;

[0054] S5: After passing through the turning section, install a belt drive before the starting point of the next turning section along the slag discharging direction, and cycle through steps S1 to S4.

[0055] The working principle of the structure of this spiral ramp reverse slope slag discharging continuous belt conveyor:

[0056] During use, first, according to needs before installation, rotate the band screw 19 and cooperate with the locking nut 20 to adjust the positions of the second chain 1701 and the third chain 1702 within the adjustable chain 16. When adjusting the overall length, move the position of the adjustable cross brace 10 within the arc groove 12 through the adjustable cross brace connecting bolt 11, causing the angle of the adjustable cross brace 10 to tilt, thereby causing the lower idler assembly 8 and the upper idler assembly 9 on the adjustable cross brace 10 to tilt. By setting multiple lower idler assemblies 8 and upper idler assemblies 9 in this application and switching the multiple lower idler assemblies 8 and upper idler assemblies 9 at different angles, the passing belt 1 is spirally adjusted to achieve the transmission of internal materials by the spiral ramp;

[0057] To move the belt 1, the belt 1 is arranged on the belt drive 2 outside the tunnel and multiple belt drives 3 at the turning points. The walking trajectory of the belt 1 can be guided by the multiple belt drives 3 at the turning points. Inside the belt drive 2 outside the tunnel, a driving motor 5 is provided to drive the driving drum 6 to rotate, enabling the belt 1 to have power for continuous material transmission;

[0058] During transportation, to ensure that the belt 1 does not fold or turn over, belt limiting frames 15 are provided on the driving bracket 4, the adjustable cross brace 10, and the belt bracket 7 inside the stepping tunnel, and a limiting idler 21 is provided at the end of the belt limiting frame 15. Under the limitation of the limiting idler 21, the belt 1 can perform stable transportation operations.

[0059] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation manners here. Any obvious changes or modifications derived from the technical solutions of the present invention still fall within the protection scope of the present invention.

Claims

1. A continuous belt conveyor structure for discharging slag in reverse slope of a spiral ramp, comprising a belt (1), an external belt drive in the tunnel (2) and a plurality of belt drives at turning points (3), characterized in that: The belt drive outside the tunnel (2) is fixedly installed on one side outside the tunnel entrance, and a plurality of belt drives at the turning points (3) are respectively fixedly installed on one side inside the tunnel entrance. The belt (1) is arranged inside the belt drive outside the tunnel (2) and the belt drives at the turning points (3). Adjustable chains (16) and first chains (17) are respectively installed on the tunnel wall between the belt drives at the turning points (3) and the belt drive outside the tunnel (2). Both ends of each adjustable chain (16) are respectively connected to a second chain (1701) and a third chain (1702). Non-adjustable cross braces (14) are installed at the lower ends of the first chains (17) at both ends of the tunnel entrance, and adjustable cross braces (10) are installed at the lower ends of each third chain (1702) in the middle of the tunnel entrance. Upper idler assemblies (9) and lower idler assemblies (8) for supporting the belt (1) are respectively fixedly installed at the upper and lower ends of each adjustable cross brace (10) and non-adjustable cross brace (14). A locking nut (20) is fixedly installed at the lower end of the upper second chain (1701), and a shackle (18) is fixedly installed at the upper end of the lower third chain (1702). A strap screw (19) is installed at the end of the shackle (18), and an adjustable chain (16) is installed between the strap screw (19) and the locking nut (20). One side of each adjustable cross brace (10) and non-adjustable cross brace (14) is fixedly connected to the lower third chain (1702). An adjustable cross brace connecting bolt (11) is fixedly installed on the other side of the adjustable cross brace (10). An arc groove (12) for the movement of the adjustable cross brace connecting bolt (11) is provided inside the sector bracket (13) which is rotatably installed at the end of the adjustable cross brace connecting bolt (11). An expansion bolt (24) is fixedly installed on the other side of each non-adjustable cross brace (14) and sector bracket (13), and each expansion bolt (24) is fixedly connected to the tunnel wall.

2. The structure of a continuous belt conveyor for discharging slag in reverse slope of a spiral rampway according to claim 1, characterized in that: Each of the lower idler assemblies (8) and upper idler assemblies (9) is composed of a plurality of idlers, and the plurality of idler assemblies are assembled into an arc shape after assembly.

3. The structure of a continuous belt conveyor for discharging slag in reverse slope of a spiral rampway according to claim 2, characterized in that: Chain mounting brackets (23) are fixedly installed at the upper ends of each first chain (17) and second chain (1701) through chain positioning bolts (25), and the ends of the chain mounting brackets (23) are fixedly installed on the tunnel wall through expansion bolts (24).

4. The structure of a continuous belt conveyor for discharging slag in reverse slope of a spiral rampway according to claim 3, wherein: Belt limiting frames (15) are respectively fixedly installed on both sides of the upper surface of the adjustable cross brace (10).

5. The structure of a continuous belt conveyor for discharging slag in reverse slope of a spiral rampway according to claim 4, characterized in that: The belt drive outside the tunnel (2) includes a drive bracket (4). A drive motor (5) is fixedly installed on one side of the upper surface of the drive bracket (4), and a drive roller (6) is fixedly installed on the other side of the upper surface of the drive bracket (4).

6. The structure of a continuous belt conveyor for discharging slag in reverse slope of a spiral rampway according to claim 5, wherein: The belt drive at the turning point (3) includes a stepped inner-tunnel belt bracket (7). The stepped inner-tunnel belt bracket (7) has multiple layers. Upper idler assemblies (9) are installed on the upper layer of the stepped inner-tunnel belt bracket (7), and lower idler assemblies (8) are installed on the lower layer of the stepped inner-tunnel belt bracket (7).

7. A continuous belt conveyor structure for discharging slag in reverse slope of a spiral rampway according to claim 6, characterized in that: Belt limiting frames (15) are provided at the upper ends of both the drive bracket (4) and the stepped inner-tunnel belt bracket (7). At the end of each of the belt limit brackets (15), a limit idler (21) is fixedly installed through a limit bracket bolt (22).

8. An installation method of a continuous belt conveyor structure for discharging slag in reverse slope of a spiral rampway according to claim 7, characterized in that, It includes the following steps: S1: Multiple drives need to be arranged for the spiral belt (1), and the position of the belt drive (3) at the turning point is arranged before the starting point of the turning section along the slag discharge direction; S2: The belt drive (2) outside the tunnel and the stepping belt support (7) inside the tunnel are installed on the right side in the direction of entering the tunnel; S3: Installation method of the stepping belt support (7) inside the tunnel: First, the right end of the non-adjustable cross brace (14) is fixed to the tunnel wall through an expansion bolt (24), and the left end is suspended at a position slightly to the right of the top of the tunnel wall through a first chain (17). The suspension method is to pre-drill bolt holes on the chain mounting bracket (23), and the chain mounting bracket (23) is fixed above the tunnel wall through an expansion bolt (24). The other end of the chain mounting bracket (23) is connected to the first chain (17) through a chain positioning bolt (25); S4: The belt drive (3) at the turning point is composed of a stepping belt support (7) inside the tunnel, an adjustable chain (16), a belt limit bracket (15), a lower idler assembly (8), an upper idler assembly (9), an adjustable cross brace (10), and a sector bracket (13). The adjustable cross brace (10) is connected to the sector bracket (13) through an adjustable cross brace connection bolt (11). An arc groove (12) is opened on the sector bracket (13). When adjusting the angle of the belt support, loosen the adjustable cross brace connection bolt (11), and the adjustable cross brace (10) moves along the trajectory of the arc groove (12). The adjustable chain (16) is composed of a second chain (1701), a third chain (1702), a shackle (18), a ring screw (19), and a locking nut (20). The length of the adjustable chain (16) is adjusted by rotating the locking nut (20), thereby adjusting the angle of the belt support. After the angle adjustment is completed, tighten the adjustable cross brace connection bolt (11). The belt limit bracket (15) is installed above the belt, and the limit idler (21) is connected to the belt limit bracket (15) through a limit bracket bolt (22). The belt limit bracket (15) and the limit idler (21) can limit the deviation range of the belt and prevent the belt from folding and turning over; S5: After passing through the turning section, install a belt drive before the starting point of the next turning section along the slag discharge direction, and cycle through steps S1 to S4 for operation.

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