A soil cleaning device for tunnel excavation engineering

Abstract

The present invention relates to the field of tunnel dark excavation engineering, and specifically is a soil cleaning device for tunnel dark excavation engineering, comprising a main conveyor belt, main frames are arranged on both sides of the main conveyor belt, wheels are rotatably connected to the main frames, a soil shoveling structure is arranged at one end of the main frame, and the soil shoveling structure comprises a flat shell, L-shaped connecting rods are connected at both sides of the flat shell, the connecting rods are fixedly connected to the main frame, a No. 1 hydraulic rod is symmetrically fixedly connected inside the flat shell, the output end of the No. 1 hydraulic rod passes through one end of the flat shell and extends toward one end of the main frame, and a cross bar is fixedly connected to the output end of the No. 1 hydraulic rod; in the present invention, the soil cleaning device designed can roll up and clean up the soil on the tunnel ground by itself, and does not need manual secondary overturning or secondary auxiliary overturning of the excavation equipment, thereby saving manpower and material resources, enabling the excavation equipment to continuously excavate the soil in the excavation direction, and ensuring the smooth progress of the dark excavation engineering.

Description

Technical Field

[0001] The invention relates to the field of tunnel dark excavation engineering, in particular to a soil clearing device for tunnel dark excavation engineering. Background Art

[0002] Tunnel boring is a method of tunnel construction carried out underground, which is particularly suitable for the development of urban underground space because it can be constructed without interfering with ground traffic and the surrounding environment. During excavation, manual or small excavation equipment is generally used to ensure construction safety without interfering with ground traffic.

[0003] During the excavation process, there is a continuous flow of scattered earth, which needs to be cleared in time to ensure the smooth and safe construction space. The current method of clearing earth generally adopts earth-moving vehicles to transport back and forth alternately, or through conveyor belts. Multiple earth-moving vehicles transport back and forth alternately. When earth-moving vehicles meet, it is difficult to pass and easy to collide, not only between earth-moving vehicles, but also between earth-moving vehicles and the inner wall of the tunnel. When transported by conveyor belt, the conveyor belt itself only has the function of conveying, and cannot remove the earth on the ground in the tunnel. Manual or excavation equipment is required to transfer the earth on the ground to the conveyor belt, which undoubtedly increases the labor workload and reduces the excavation efficiency of tunnel excavation.

[0004] Therefore, in view of the above problems, a soil clearing device for tunnel dark excavation engineering is proposed. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: the tunnel excavation engineering soil cleaning device described in the present invention comprises a main conveyor belt, main frames are arranged on both sides of the main conveyor belt, wheels are rotatably connected to the main frames, one end of the main frame is provided with a shoveling structure, and the shoveling structure comprises a flat shell, L-shaped connecting rods are connected to both sides of the flat shell, the connecting rods are fixed to the main frame, a No. 1 hydraulic rod is symmetrically fixed inside the flat shell, the output end of the No. 1 hydraulic rod passes through one end of the flat shell and extends toward one end of the main frame, and a cross bar is fixed to the output end of the No. 1 hydraulic rod;

[0007] Push-pull rods are fixedly connected to both sides of the cross bar, and one end of the push-pull rod close to the main frame is rotatably connected to a driving roller. The other end of the push-pull rod away from the main frame passes through the flat shell and is fixedly connected to a push-pull plate. The end of the push-pull plate passes through the other end of the flat shell and is rotatably connected to a driven roller, and a conveyor belt is sleeved between the driven roller and the driving roller.

[0008] Preferably, a No. 2 hydraulic rod is provided between the horizontal end of the connecting rod and the side wall of the flat shell, the cylinder of the No. 2 hydraulic rod is rotatably connected to the horizontal end of the connecting rod, and the output end of the No. 2 hydraulic rod is rotatably connected to the side wall of the flat shell;

[0009] A pull rod No. 1 is arranged between the horizontal middle part of the connecting rod and the side wall of the flat shell, one end of the pull rod No. 1 is rotatably connected to the connecting rod, and the other end of the pull rod No. 1 is rotatably connected to the side wall of the flat shell.

[0010] Preferably, a first baffle rod is fixedly connected between the horizontal ends of the two connecting rods, and a second baffle rod is fixedly connected between the right-angle positions of the two connecting rods, and the height of the second baffle rod is lower than that of the first baffle rod;

[0011] A plurality of "X"-shaped reinforcing rods are fixedly connected to the upper surface of the horizontal end of the connecting rod;

[0012] The two No. 1 pull rods and the connecting rod rotation connection points are fixedly connected to the No. 2 pull rod.

[0013] Preferably, guard plates are fixedly connected to the side walls on both sides of the flat shell, and the guard plates are located on the inner side of the No. 1 pull rod and the No. 2 hydraulic rod.

[0014] Preferably, a No. 3 pull rod is provided between the right-angle position of the two connecting rods and the main frame, one end of the No. 3 pull rod is fixedly connected to the connecting rod, and the other end of the No. 3 pull rod is fixedly connected to the middle position of the main frame.

[0015] Preferably, a secondary conveyor belt is provided at the other end of the main frame; secondary frames are provided on both sides of the secondary conveyor belt, and a connection structure is provided between one end of the secondary frame and the other end of the main frame, and the connection structure includes a wedge-shaped plate provided at one end of the secondary frame, and a concave portion is provided on the upper inclined surface of the wedge-shaped plate;

[0016] A rotating guide wheel is arranged on the lower surface of the other end of the main frame. The guide wheel is attached to the inclined surface of the wedge plate and rolls, and is embedded in the concave portion.

[0017] Preferably, a limiting portion is provided on the end of the wedge-shaped plate away from the main frame, and the limiting portion is used to support the other end of the main frame.

[0018] Preferably, a groove is provided on the upper surface of the wedge-shaped plate, a push rod is rotatably connected in the groove, the push rod is rotated and taken out, and can be embedded in a slot provided on the lower surface of the other end of the main frame.

[0019] Preferably, a supporting rod is provided between two of the wheel bodies, and both ends of the supporting rod are rotatably connected to the inner side wall of the main frame.

[0020] Preferably, each wheel body surface is provided with protective lines.

[0021] The present invention is beneficial in that:

[0022] 1. In the present invention, the soil cleaning device designed can roll up and clean up the soil on the tunnel ground by itself, without the need for manual secondary overturning or secondary auxiliary overturning of the excavation equipment, saving manpower and material resources, allowing the excavation equipment to continue to excavate the soil in the excavation direction, and ensuring the smooth progress of the dark excavation project.

[0023] 2. In the present invention, for some thinner soil layers, the No. 2 hydraulic rod can be controlled to lower the driven roller, reduce the height of the conveyor belt for rolling up and cleaning the soil, and the No. 1 hydraulic rod can be driven to drive the front end of the conveyor belt to extend obliquely toward the inside of the soil, so that the thinner soil layer on the ground inside the tunnel can be rolled up and cleaned. The thinner soil layer is difficult for the excavation equipment to shovel, and the manual labor can be reduced at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A first-view stereoscopic diagram of the soil cleaning device of the present invention;

[0025] Figure 2 A second perspective perspective view of the soil cleaning device of the present invention;

[0026] Figure 3 It is a side view of the soil cleaning device of the present invention;

[0027] Figure 4 is a three-dimensional diagram of the conveyor belt in the present invention;

[0028] Figure 5 is a side view of the conveyor belt in the present invention;

[0029] Figure 6 It is a schematic diagram of the internal structure of the conveyor belt in the present invention;

[0030] Figure 7 It is a cross-sectional view of the internal structure of the conveyor belt in the present invention;

[0031] Figure 8 It is a three-dimensional diagram of the earth-shoveling structure in the present invention;

[0032] Fig. 9 A first-view stereoscopic view of the secondary conveyor belt in the present invention;

[0033] Fig.10 A second perspective stereoscopic image of the secondary conveyor belt in the present invention;

[0034] Fig.11 It is a schematic diagram of the cooperation between the secondary frame and the main frame in the present invention.

[0035] In the figure: 1. main conveyor belt; 2. main frame; 3. wheel body; 4. flat shell; 5. connecting rod; 6. No. 1 hydraulic rod; 7. cross bar; 8. push-pull rod; 9. active roller; 10. push-pull plate; 11. driven roller; 12. conveyor belt; 13. No. 2 hydraulic rod; 14. No. 1 pull rod; 15. No. 1 stop rod; 16. No. 2 stop rod; 17. reinforcement rod; 18. No. 2 pull rod; 19. guard plate; 20. No. 3 pull rod; 21. secondary conveyor belt; 22. secondary frame; 23. wedge plate; 24. recess; 25. guide wheel; 26. limit part; 27. groove; 28. push rod; 29. ​​slot; 30. support rod. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0037] Reference Figure 1 - Figure 8 A soil-clearing device for tunneling engineering, comprising a main conveyor belt 1, main frames 2 are arranged on both sides of the main conveyor belt 1, wheels 3 are rotatably connected to the main frames 2, one end of the main frame 2 is provided with a soil-shoveling structure, and the soil-shoveling structure comprises a flat shell 4, L-shaped connecting rods 5 are connected to both sides of the flat shell 4, the connecting rods 5 are fixed to the main frame 2, a No. 1 hydraulic rod 6 is symmetrically fixed inside the flat shell 4, the output end of the No. 1 hydraulic rod 6 passes through one end of the flat shell 4 and extends toward one end of the main frame 2, and a cross bar 7 is fixed to the output end of the No. 1 hydraulic rod 6;

[0038] Push-pull rods 8 are fixedly connected to both sides of the crossbar 7. One end of the push-pull rod 8 close to the main frame 2 is rotatably connected to a driving roller 9. The other end of the push-pull rod 8 away from the main frame 2 passes through the flat shell 4 and is fixedly connected to a push-pull plate 10. The end of the push-pull plate 10 passes through the other end of the flat shell 4 and is rotatably connected to a driven roller 11. A conveyor belt 12 is sleeved between the driven roller 11 and the driving roller 9.

[0039] In this embodiment, a motor for driving the active roller 9 to rotate is provided on the push-pull rod 8, and a pulley is fixedly connected to the output end of the motor, and the pulley is sleeved on the pulley provided on the outer ring of the active roller 9, that is, the motor can drive the active roller 9 to rotate, and the active roller 9 drives the driven roller 11 to rotate through the conveyor belt 12;

[0040] In this embodiment, the wheel body 3 is a self-rotating driving wheel, and its working principle is the same as that of the hub motor. The wheel body 3 can drive the entire soil cleaning device to move into the tunnel;

[0041] The specific working process of the soil cleaning device is as follows: first, the entire soil cleaning device is moved into the tunnel through the wheel body 3, and the front end of the soil shoveling structure is pressed against the soft soil on the ground, that is, the push-pull plate 10 drives the conveyor belt 12 to press against the soil, and then the motor is driven, and the motor drives the conveyor belt 12 to rotate, and then the No. 1 hydraulic rod 6 is driven, and the No. 1 hydraulic rod 6 pulls the cross bar 7 to move toward the flat shell 4. At the same time, the cross bar 7 drives the push-pull rod 8 to push the push-pull plate 10, and the push-pull plate 10 drives the conveyor belt 12 to extend into the soil. At this time, the conveyor belt 12 rotates while slowly extending into the soil, so that the soil on the tunnel ground can be actively rolled onto the conveyor belt 12, and then transported to the main conveyor belt 1 and transmitted out of the tunnel;

[0042] The shoveling structure is provided, wherein the cross bar 7, the push-pull rod 8, the active roller 9, the push-pull plate 10 and the driven roller 11 are an integral structure, and can move synchronously along the inside of the flat shell 4 to ensure the stable operation of the conveyor belt 12;

[0043] As for the advancement of the conveyor belt 12, it can also be controlled by the movement of the wheel body 3. However, compared with the No. 1 hydraulic rod 6 controlling the conveyor belt 12 to advance and extend into the earthwork, the No. 1 hydraulic rod 6 is more flexible and more suitable for the situation where the earthwork is mixed with gravel. The conveyor belt 12 is slowly controlled to advance and extend, so as to prevent the gravel in the earthwork from squeezing and damaging the conveyor belt 12;

[0044] In this embodiment, the designed soil clearing device can roll over and clean up the soil on the tunnel ground by itself, without the need for manual secondary overturning or secondary auxiliary overturning of the excavation equipment, saving manpower and material resources, allowing the excavation equipment to continue to excavate the soil in the excavation direction, ensuring the smooth progress of the dark excavation project.

[0045] Reference Figure 1 - Figure 8 A second hydraulic rod 13 is provided between the horizontal end of the connecting rod 5 and the side wall of the flat shell 4, the cylinder of the second hydraulic rod 13 is rotatably connected to the horizontal end of the connecting rod 5, and the output end of the second hydraulic rod 13 is rotatably connected to the side wall of the flat shell 4;

[0046] A first pull rod 14 is provided between the horizontal middle portion of the connecting rod 5 and the side wall of the flat shell 4. One end of the first pull rod 14 is rotatably connected to the connecting rod 5, and the other end of the first pull rod 14 is rotatably connected to the side wall of the flat shell 4.

[0047] The thickness of the soil layer on the ground in the tunnel is different. For some thinner soil layers, the No. 2 hydraulic rod 13 can be controlled to lower the driven roller 11 and reduce the height of the conveyor belt 12 to roll up and clean the soil. The specific operation is to drive the No. 2 hydraulic rod 13, and the output end of the No. 2 hydraulic rod 13 pushes down the other end of the flat shell 4 to lower the height of the driven roller 11, so that the front end of the conveyor belt 12 can be close to the ground in the tunnel, and then drive the No. 1 hydraulic rod 6 to drive the front end of the conveyor belt 12 to extend obliquely toward the inside of the soil, so that the thinner soil layer on the ground in the tunnel can be rolled up and cleaned. The thinner soil layer is difficult for excavation equipment to shovel, and it is labor-intensive to overturn it manually.

[0048] Reference Figure 1 - Figure 8 A first barrier rod 15 is fixedly connected between the horizontal ends of the two connecting rods 5, and a second barrier rod 16 is fixedly connected between the right angle positions of the two connecting rods 5, and the height of the second barrier rod 16 is lower than the height of the first barrier rod 15;

[0049] A plurality of “X” shaped reinforcing rods 17 are fixedly connected to the upper surface of the horizontal end of the connecting rod 5;

[0050] The two first pull rods 14 and the connecting rod 5 are connected to the second pull rod 18 at the rotation connection points;

[0051] The No. 1 baffle bar 15 is provided, firstly, to fix the two connecting rods 5 together, improve the integrity, and improve the stability of the soil cleaning device. At the same time, the No. 1 baffle bar 15 can block some larger mud blocks. During the operation of the conveyor belt 12, the anti-skid baffle strips on its surface gradually reduce and crush the mud blocks, and then transmit them to the main conveyor belt 1, so as to prevent larger mud blocks from falling from the conveyor belt 12 onto the main conveyor belt 1, causing impact on the main conveyor belt 1 and affecting its service life. Moreover, the end of the No. 1 baffle bar 15 is arranged close to the two No. 2 hydraulic rods 13, so as to provide tension guarantee for the No. 2 hydraulic rods 13 to pull the flat shell 4.

[0052] The purpose of the No. 1 baffle bar 15 is to fix the two connecting bars 5 together, improve the integrity, and improve the stability of the soil cleaning device. The No. 1 baffle bar 15 is lower than the No. 2 baffle bar 16, which can restrain smaller mud blocks and cooperate with the conveyor belt 12 to reduce and crush the mud blocks, and then transfer them to the main conveyor belt 1, which can also alleviate the impact force of the mud blocks on the conveyor belt and better protect the main conveyor belt 1.

[0053] The reinforcement rod 17 not only enhances the integrity and firmness between the two connecting rods 5, but also protects the conveyor belt 12. It can support the downward pressure from above, especially various tools used in the tunnel digging process, so as to prevent the tools from falling on the conveyor belt 12 and causing destructive impact on the conveyor belt 12.

[0054] The second pull rod 18 is used to enhance the rotational connection stability between the two first pull rods 14 and the connecting rod 5, so that the first pull rod 14 can stably hold the earth-moving structure.

[0055] Reference Figure 1 - Figure 8 , guard plates 19 are fixedly connected to the side walls of both sides of the flat shell 4, and the guard plates 19 are located inside the No. 1 pull rod 14 and the No. 2 hydraulic rod 13;

[0056] The guard plate 19 is provided, firstly, to guide the earth to move along the conveyor belt 12, to reduce the amount of earth spilled along both sides of the conveyor belt 12, so that more earth can be smoothly transferred to the main conveyor belt 1; secondly, to protect both sides of the conveyor belt 12. When the soil cleaning device moves into the tunnel and adjusts the position and angle of the conveyor belt 12, the main conveyor belt 12 is protected by the guard plate 19 to avoid colliding with the inner wall of the tunnel or other construction equipment in the tunnel.

[0057] Reference Figure 1 - Figure 8 A third tie rod 20 is provided between the right angle position of the two connecting rods 5 and the main frame 2, one end of the third tie rod 20 is fixedly connected to the connecting rod 5, and the other end of the third tie rod 20 is fixedly connected to the middle position of the main frame 2;

[0058] The vertical end of the connecting rod 5 can be fixed to the main frame 2 by means of bolts and nuts. At the same time, the other end of the No. 3 pull rod 20 can also be fixed to the main frame 2 by means of bolts and nuts. The purpose is to facilitate subsequent dismantling and replacement, as well as transportation. The modular design is more flexible, and the No. 3 pull rod 20 also pulls the connecting rod 5, so that the connecting rod 5 can effectively support the earth-moving structure and ensure the stability of the earth-moving structure.

[0059] Reference Figure 1 - Fig.11 A secondary conveyor belt 21 is provided at the other end of the main frame 2; secondary frames 22 are provided on both sides of the secondary conveyor belt 21, and a connection structure is provided between one end of the secondary frame 22 and the other end of the main frame 2, and the connection structure includes a wedge plate 23 provided at one end of the secondary frame 22, and a recess 24 is provided on the upper surface of the wedge plate 23;

[0060] A rotating guide wheel 25 is provided on the lower surface of the other end of the main frame 2. The guide wheel 25 is attached to the inclined surface of the wedge plate 23 and rolls, and is embedded in the recess 24.

[0061] During the excavation of the tunnel, the depth gradually increases. Considering that the length of the main conveyor belt 1 is limited, it is not suitable for the gradually deepening tunnel. For this reason, a secondary conveyor belt 21 is set on the main conveyor belt 1 to extend the conveying length of the main conveyor belt 1. The secondary conveyor belt 21 is detachably connected to the main conveyor belt 1 and can be flexibly installed. The secondary conveyor belt 21 can be installed with the main conveyor belt 1, and can also be installed between two adjacent secondary conveyor belts 21, that is, multiple secondary conveyor belts 21 are installed on the main conveyor belt 1;

[0062] The installation process between two adjacent secondary conveyor belts 21 is the same as the installation process between the secondary conveyor and the main conveyor belt 1. Taking the installation of the secondary conveyor belt 21 and the main conveyor belt 1 as an example, wheel bodies 3 are also provided on both sides of the secondary frame 22. The wheel body 3 can drive one end of the secondary conveyor belt 21 to extend downwardly to the other end of the main conveyor belt 1. The wedge plate 23 squeezes the guide wheel 25 upwardly and rubs the guide wheel 25 to rotate. At the same time, one end of the secondary frame 22 gradually moves to the bottom of the other end of the main frame 2. Finally, the guide wheel 25 is embedded in the recess 24 to connect the secondary frame 22 with the main frame 2, thereby connecting the secondary conveyor belt 21 and the main conveyor belt 1 into a whole. When moving into the tunnel, the wheel bodies 3 of the secondary frame 22 and the main frame 2 are driven synchronously and move into the tunnel. Then, the earth is cleaned. The earth falls from the conveyor belt 12 onto the main conveyor belt 1, and finally falls onto the secondary conveyor belt 21, and finally leaves the tunnel.

[0063] Reference Figure 1 - Fig.11 The end of the wedge-shaped plate 23 away from the main frame 2 is provided with a limiting portion 26, and the limiting portion 26 is used to support the other end of the main frame 2;

[0064] The limit portion 26 arranged vertically upwards supports the other end of the main frame 2 and limits the overlapping length between the secondary frame 22 and the main frame 2, so as to prevent the guide wheel 25 from crossing the recess 24 and disengaging from the wedge plate 23 when the secondary frame 22 extends to the bottom of the main frame 2, resulting in failure in the installation of the secondary conveyor belt 21 and the main conveyor belt 1.

[0065] Reference Figure 1 - Fig.11 The upper surface of the wedge-shaped plate 23 is provided with a groove 27, and a push rod 28 is rotatably connected in the groove 27. The push rod 28 is rotated and taken out, and can be embedded in a slot 29 provided on the lower surface of the other end of the main frame 2;

[0066] After the push rod 28 rotates, the angle between the push rod 28 and the upper surface of the wedge block is an obtuse angle, ensuring that the end of the push rod 28 can continue to support the main frame 2 after being embedded in the slot 29, that is, when the secondary conveyor belt 21 moves into the tunnel, the limit portion 26 and the push rod 28 can exert a forward force on the main conveyor belt 1. After the secondary conveyor belt 21 is installed on the main conveyor belt 1, the main conveyor belt 1 is in a tilted state, and part of the wheel body 3 on the main frame 2 cannot contact the ground in the tunnel, and the wheel body 3 loses its grip, while the wheel body 3 on the secondary frame 22 is in contact with the ground in the tunnel, has good grip, and has a stable driving force.

[0067] Reference Figure 1 - Fig.11 A support rod 30 is provided between the two wheel bodies 3, and both ends of the support rod 30 are rotatably connected to the inner wall of the main frame 2;

[0068] The support rod 30 is provided to, on the one hand, support the main conveyor belt 1 so that more earth can be transported on the main conveyor belt 1, and on the other hand, connect two adjacent main frames 2 together to improve stability. The support rod 30 is also installed on the secondary frame 22, playing the same role.

[0069] Reference Figure 1 - Fig.10 , each of the wheel bodies 3 has protective patterns on its surface;

[0070] Protective patterns are arranged on the surface of the wheel body 3 to increase the gripping force of the wheel body 3 so that the soil clearing device can move forward stably or retreat backward.

[0071] Working principle: First, the entire earth-clearing device is moved into the tunnel through the wheel body 3, and the front end of the earth-shoveling structure is pressed against the soft earth on the ground, that is, the push-pull plate 10 drives the conveyor belt 12 to press against the earth, and then the front end height of the conveyor belt 12 is adjusted through the No. 2 hydraulic rod 13, and then the motor is driven, and the motor drives the conveyor belt 12 to rotate, and then the No. 1 hydraulic rod 6 is driven, and the No. 1 hydraulic rod 6 pulls the cross bar 7 to move toward the flat shell 4. At the same time, the cross bar 7 drives the push-pull rod 8 to push the push-pull plate 10, and the push-pull plate 10 drives the conveyor belt 12 to extend into the earth. At this time, the conveyor belt 12 rotates while slowly extending into the earth, so that the earth on the tunnel ground can be actively rolled onto the conveyor belt 12, and then transported to the main conveyor belt 1 and transmitted out of the tunnel.

[0072] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A soil cleaning device for tunnel excavation engineering, characterized in that: The invention comprises a main conveyor belt (1), main frames (2) are provided on both sides of the main conveyor belt (1), wheels (3) are rotatably connected to the main frames (2), a shoveling structure is provided at one end of the main frame (2), and the shoveling structure comprises a flat shell (4), L-shaped connecting rods (5) are connected to both sides of the flat shell (4), the connecting rods (5) are fixedly connected to the main frame (2), a No. 1 hydraulic rod (6) is symmetrically fixedly connected inside the flat shell (4), and the output end of the No. 1 hydraulic rod (6) passes through one end of the flat shell (4) and extends toward one end of the main frame (2). The output end of the No. 1 hydraulic rod (6) is fixedly connected to a cross bar (7); push-pull rods (8) are fixedly connected to both sides of the cross bar (7); one end of the push-pull rod (8) close to the main frame (2) is rotatably connected to a driving roller (9); the other end of the push-pull rod (8) away from the main frame (2) passes through the flat shell (4) and is fixedly connected to a push-pull plate (10); the end of the push-pull plate (10) passes through the other end of the flat shell (4) and is rotatably connected to a driven roller (11); and a conveyor belt (12) is sleeved between the driven roller (11) and the driving roller (9); A second hydraulic rod (13) is provided between the horizontal end of the connecting rod (5) and the side wall of the flat shell (4); the cylinder of the second hydraulic rod (13) is rotatably connected to the horizontal end of the connecting rod (5), and the output end of the second hydraulic rod (13) is rotatably connected to the side wall of the flat shell (4); a first pull rod (14) is provided between the horizontal middle part of the connecting rod (5) and the side wall of the flat shell (4); one end of the first pull rod (14) is rotatably connected to the connecting rod (5), and the other end of the first pull rod (14) is rotatably connected to the side wall of the flat shell (4); A first stopper (15) is fixedly connected between the horizontal ends of the two connecting rods (5), a second stopper (16) is fixedly connected between the right-angled positions of the two connecting rods (5), and the height of the second stopper (16) is lower than the height of the first stopper (15); a plurality of "X"-shaped reinforcing rods (17) are fixedly connected to the upper surface of the horizontal end of the connecting rod (5); and a second stopper (18) is fixedly connected to the rotational connection points of the two first pull rods (14) and the connecting rod (5).

2. The soil cleaning device for tunnel excavation engineering according to claim 1, characterized in that: Guard plates (19) are fixedly connected to the side walls of both sides of the flat shell (4), and the guard plates (19) are located inside the first pull rod (14) and the second hydraulic rod (13).

3. The soil cleaning device for tunnel excavation engineering according to claim 1, characterized in that: A third pull rod (20) is provided between the right angle position of the two connecting rods (5) and the main frame (2), one end of the third pull rod (20) is fixedly connected to the connecting rod (5), and the other end of the third pull rod (20) is fixedly connected to the middle position of the main frame (2).

4. The soil cleaning device for tunneling engineering according to claim 3 is characterized in that: A secondary conveyor belt (21) is provided at the other end of the main frame (2); secondary frames (22) are provided on both sides of the secondary conveyor belt (21); a connection structure is provided between one end of the secondary frame (22) and the other end of the main frame (2), and the connection structure comprises a wedge-shaped plate (23) provided at one end of the secondary frame (22); a recess (24) is provided on the upper inclined surface of the wedge-shaped plate (23); a rotating guide wheel (25) is provided on the lower surface of the other end of the main frame (2); the guide wheel (25) is attached to the inclined surface of the wedge-shaped plate (23) and rolls, and is embedded in the recess (24).

5. The soil cleaning device for tunneling engineering according to claim 4, characterized in that: A limiting portion (26) is provided on the end of the wedge-shaped plate (23) away from the main frame (2), and the limiting portion (26) is used to support the other end of the main frame (2).

6. The soil cleaning device for tunneling engineering according to claim 5, characterized in that: The upper surface of the wedge-shaped plate (23) is provided with a groove (27), and a push rod (28) is rotatably connected in the groove (27). The push rod (28) is rotated and taken out, and can be embedded in a slot (29) provided on the lower surface of the other end of the main frame (2).

7. The soil cleaning device for tunneling engineering according to claim 1, characterized in that: A support rod (30) is provided between the two wheel bodies (3), and both ends of the support rod (30) are rotatably connected to the inner side wall of the main frame (2).

8. The soil clearing device for tunneling engineering according to claim 7, characterized in that: The surface of each wheel body (3) is provided with protective patterns.

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