A slag soil screening device for shield construction

Abstract

The utility model discloses a kind of slag soil screening devices for shield construction belong to slag soil screening equipment technical field, the slag soil screening device for shield construction, it includes: support frame and screening box, both sides outer surface of screening box is fixedly connected with side mounting plate, the bottom of each side mounting plate is fixedly connected with three stabilizer bars, six stabilizer bars are slidably penetrated the top of support frame, three buffer springs are respectively fixedly connected between support frame and two side mounting plates, the slag soil screening device for shield construction is controlled electric cylinder to start after screening a part of slag soil, drive dumping control box to rise, then it is controlled drive motor to start, to drive screen plate to move to the side of screening box, then it is controlled servo motor to start, dump large particle gravel etc. On screen plate, to avoid screen plate being blocked, avoid manual cleaning, reduce downtime, further improve operation safety and screening efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of slag screening equipment, and more specifically, to a slag screening device for tunnel boring machine construction. Background Technology

[0002] Shield tunneling is a widely used mechanized underground excavation technology that integrates tunneling, support, and lining operations. Its core is a cylindrical steel shield machine, with a rotating cutterhead at the front cutting the soil, hydraulic jacks in the middle propelling the tunnel, and precast segments assembled simultaneously at the rear to form the tunnel lining. During construction, the shield machine is assembled in the launching shaft, excavates along the designed axis, and excavated soil is transported away via a spoil removal system. Grout is injected to stabilize the surrounding strata. The entire process is carried out within a closed chamber, effectively controlling ground settlement. It is suitable for complex geological conditions such as soft soil and sand layers, and is particularly suitable for projects with strict requirements on surface disturbance, such as urban subways and municipal utility tunnels.

[0003] During tunnel boring machine (TBM) construction, efficient screening of excavated soil is crucial for ensuring continuous tunneling and the resource utilization of excavated soil. Traditional excavated soil screening devices typically use fixed vibrating screens or simple separation equipment. Large particles of gravel and clay in the excavated soil are easily trapped in the screen mesh, requiring frequent machine shutdowns for manual cleaning, which affects construction efficiency. The need for manual intervention to remove large particles of gravel increases labor intensity and safety risks. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a slag screening device for tunnel boring machine construction. It fully automates the mechanical discharge of large particles of gravel from the screen plate, thereby avoiding screen plate blockage, eliminating the need for manual cleaning, reducing downtime, and further improving operational safety and screening efficiency.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution:

[0008] A soil screening device for tunnel boring machine (TBM) construction includes:

[0009] The system comprises a support frame and a screening box. Side mounting plates are fixedly connected to both outer surfaces of the screening box. Three stabilizing rods are fixedly connected to the bottom of each side mounting plate. All six stabilizing rods slide through the top of the support frame. Three buffer springs are fixedly connected between the support frame and each of the two side mounting plates. Vibration motors are fixedly mounted on both outer surfaces of the screening box.

[0010] A displacement control box is fixedly connected to one outer surface of a screening box. A transmission threaded rod is rotatably connected between the two inner walls of the displacement control box. A displacement transmission block is threaded onto the transmission threaded rod. Two displacement transmission rods are fixedly connected to the top of the displacement transmission block. A displacement transmission plate is fixedly connected to the upper ends of the two displacement transmission rods. An electric cylinder is fixedly installed on the top of the displacement transmission plate. A tilting control box is fixedly connected to the output end of the electric cylinder. A tilting transmission plate is rotatably connected to one outer surface of the tilting control box. A screen plate is fixedly connected to the bottom of the tilting transmission plate. The screen plate is slidably embedded inside the screening box. A transmission worm is rotatably connected between the two inner walls of the tilting control box. A transmission worm wheel is rotatably connected between the front and rear inner walls of the tilting control box. The transmission worm wheel meshes with the transmission worm and is fixedly connected to the tilting transmission plate.

[0011] As a preferred embodiment of this utility model, a drive motor is fixedly installed on one outer surface of the displacement control box, and the output end of the drive motor is fixedly connected to the transmission threaded rod.

[0012] As a preferred embodiment of this utility model, a limiting rod is fixedly connected between the inner walls of the two sides of the displacement control box, and the displacement transmission block is slidably sleeved on the limiting rod.

[0013] As a preferred embodiment of this utility model, a servo motor is fixedly installed on one outer surface of the tilting control box, and the output end of the servo motor is fixedly connected to the transmission worm gear.

[0014] In a preferred embodiment of this utility model, each of the buffer springs is slidably sleeved on the corresponding stabilizing rod.

[0015] As a preferred embodiment of this utility model, each of the stabilizer bars is made of stainless steel.

[0016] 3. Beneficial effects

[0017] Compared with existing technologies, this utility model provides a soil screening device for tunnel boring machine (TBM) construction, which has the following advantages:

[0018] This tunnel boring machine (TBM) excavator screening device feeds excavated soil into the screening box. Two vibrating motors are activated, causing the screening box to vibrate up and down, which in turn vibrates the screen plate, rapidly screening the excavated soil. After screening a portion of the soil, an electric cylinder is activated, raising the tilting control box. This causes the tilting transmission plate to move the screen plate to the upper side of the screening box. Then, a drive motor is activated, rotating the transmission threaded rod, which moves the displacement transmission block. This causes two displacement transmission rods to move the displacement transmission plate, moving the screen plate to one side of the screening box. Finally, a servo motor is activated, rotating the transmission worm gear, which in turn rotates the transmission worm wheel at a certain angle. This tilting transmission plate then causes the screening box to tilt at a certain angle, emptying large particles of gravel from the screen plate. This prevents the screen plate from clogging, eliminates the need for manual cleaning, reduces downtime, and further improves operational safety and screening efficiency. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present utility model;

[0020] Figure 2 This is a three-dimensional view of a portion of the structure of the screening box of this utility model;

[0021] Figure 3 This is a cross-sectional view of the displacement control box of this utility model;

[0022] Figure 4 This is a three-dimensional view of a portion of the structure of the screen plate of this utility model;

[0023] Figure 5 This is a cross-sectional view of the tilt control box of this utility model.

[0024] Explanation of the labels in the diagram:

[0025] 1. Support frame; 2. Screening box; 3. Side mounting plate; 4. Displacement control box; 5. Displacement transmission rod; 6. Displacement transmission plate; 7. Electric cylinder; 8. Tilting control box; 9. Vibration motor; 10. Stabilizer bar; 11. Transmission threaded rod; 12. Displacement transmission block; 13. Drive motor; 14. Limit rod; 15. Tilting transmission plate; 16. Screen plate; 17. Transmission worm gear; 18. Transmission worm; 19. Servo motor. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] Example:

[0028] Please see Figures 1-5 A soil screening device for tunnel boring machine (TBM) construction, comprising:

[0029] The system comprises a support frame 1 and a screening box 2. Side mounting plates 3 are fixedly connected to both outer surfaces of the screening box 2. Three stabilizing rods 10 are fixedly connected to the bottom of each side mounting plate 3. All six stabilizing rods 10 slide through the top of the support frame 1. Three buffer springs are fixedly connected between the support frame 1 and each of the two side mounting plates 3. Vibration motors 9 are fixedly mounted on both outer surfaces of the screening box 2.

[0030] A displacement control box 4 is fixedly connected to one outer surface of the screening box 2. A transmission threaded rod 11 is rotatably connected between the two inner walls of the displacement control box 4. A displacement transmission block 12 is threadedly connected to the transmission threaded rod 11. Two displacement transmission rods 5 are fixedly connected to the top of the displacement transmission block 12. A displacement transmission plate 6 is fixedly connected to the upper end of the two displacement transmission rods 5. An electric cylinder 7 is fixedly installed on the top of the displacement transmission plate 6. A tilting control box 8 is fixedly connected to the output end of the electric cylinder 7. A tilting transmission plate 15 is rotatably connected to one outer surface of the tilting control box 8. A screen plate 16 is fixedly connected to the bottom of the tilting transmission plate 15. The screen plate 16 is slidably embedded inside the screening box 2. A transmission worm gear 18 is rotatably connected between the two inner walls of the tilting control box 8. A transmission worm wheel 17 is rotatably connected between the front and rear inner walls of the tilting control box 8. The transmission worm wheel 17 meshes with the transmission worm gear 18 and is fixedly connected to the tilting transmission plate 15.

[0031] In a specific embodiment of this utility model, after the screw conveyor of the tunnel boring machine transports the excavated soil from the sealed soil chamber, it sends the excavated soil into the screening box 2 through the guide plate. A soil conveyor belt is installed at the bottom of the screening box 2. The support frame 1 is fixedly installed on the working platform and will not vibrate with the screening box 2. By controlling the start of two vibration motors 9, the screening box 2 vibrates up and down through six stabilizer bars 10 and six buffer springs, thereby driving the screen plate 16 to vibrate, thus quickly screening the excavated soil. After screening a portion of the excavated soil, the electric cylinder 7 is started, driving the tilting control box 8 to rise, causing the soil to tilt. The transmission plate 15 drives the screen plate 16 to the upper side of the screening box 2. Then, by controlling the rotation of the transmission threaded rod 11, the displacement transmission block 12 is moved, causing the two displacement transmission rods 5 to move the displacement transmission plate 6, thereby moving the screen plate 16 to one side of the screening box 2. Then, by controlling the rotation of the transmission worm gear 18, the transmission worm wheel 17 is rotated at a certain angle. By tilting the transmission plate 15, the screening box 2 is flipped at a certain angle, and large particles of gravel on the screen plate 16 are poured out, thereby preventing the screen plate 16 from being blocked, avoiding manual cleaning, reducing downtime, and further improving operational safety and screening efficiency.

[0032] Specifically, a drive motor 13 is fixedly installed on one outer surface of the displacement control box 4, and the output end of the drive motor 13 is fixedly connected to the transmission threaded rod 11.

[0033] In this embodiment, the drive motor 13 is started by controlling the drive motor 13 to drive the transmission threaded rod 11 to rotate.

[0034] Specifically, a limit rod 14 is fixedly connected between the inner walls of both sides of the displacement control box 4, and the displacement transmission block 12 is slidably sleeved on the limit rod 14.

[0035] In this embodiment, the limiting rod 14 keeps the displacement transmission block 12 stable during movement.

[0036] Specifically, a servo motor 19 is fixedly installed on one outer surface of the tilt control box 8, and the output end of the servo motor 19 is fixedly connected to the transmission worm gear 18.

[0037] In this embodiment, the servo motor 19 is started by controlling the servo motor 19 to drive the transmission worm gear 18 to rotate.

[0038] Specifically, each buffer spring is slidably sleeved on the corresponding stabilizer bar 10.

[0039] In this embodiment, the buffer spring is sleeved on the stabilizer bar 10 to prevent the buffer spring from twisting during operation.

[0040] Specifically, each stabilizer bar 10 is made of stainless steel.

[0041] In this embodiment, the stabilizer bar 10 is made of stainless steel, which has a smooth surface that is not easy to rust and has a long service life when exposed.

[0042] Working principle: Slag is fed into the screening box 2. Two vibrating motors 9 are started, and through six stabilizing rods 10 and six buffer springs, the screening box 2 vibrates up and down, causing the screen plate 16 to vibrate, thus quickly screening the slag. After screening a portion of the slag, the electric cylinder 7 is started, causing the tilting control box 8 to rise. This causes the tilting transmission plate 15 to move the screen plate 16 to the upper side of the screening box 2. Then, the drive motor 13 is started, causing the transmission threaded rod 11 to rotate, which moves the displacement transmission block 12. This causes the two displacement transmission rods 5 to move the displacement transmission plate 6, thus moving the screen plate 16 to the screening box 2. On one side, the servo motor 19 is started, driving the transmission worm gear 18 to rotate, which in turn drives the transmission worm wheel 17 to rotate at a certain angle. This causes the screening box 2 to flip at a certain angle by tilting the transmission plate 15, thus emptying large particles of gravel from the screen plate 16. This prevents the screen plate 16 from being blocked, avoids manual cleaning, reduces downtime, and further improves operational safety and screening efficiency. The control method of this utility model is controlled by manually starting and stopping the switch. The wiring diagram of the power components and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail here.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A soil screening device for shield tunneling construction, characterized in that, include: A support frame (1) and a screening box (2) are provided. Side mounting plates (3) are fixedly connected to both outer surfaces of the screening box (2). Three stabilizing rods (10) are fixedly connected to the bottom of each side mounting plate (3). All six stabilizing rods (10) slide through the top of the support frame (1). Three buffer springs are fixedly connected between the support frame (1) and the two side mounting plates (3). Vibration motors (9) are fixedly installed on both outer surfaces of the screening box (2). A displacement control box (4) is fixedly connected to one side of the outer surface of the screening box (2). A transmission threaded rod (11) is rotatably connected between the inner walls of the two sides of the displacement control box (4). A displacement transmission block (12) is threadedly connected to the transmission threaded rod (11). Two displacement transmission rods (5) are fixedly connected to the top of the displacement transmission block (12). A displacement transmission plate (6) is fixedly connected to the upper end of the two displacement transmission rods (5). An electric cylinder (7) is fixedly installed on the top of the displacement transmission plate (6). A tilting control is fixedly connected to the output end of the electric cylinder (7). A tilting control box (8) is formed. A tilting transmission plate (15) is rotatably connected to one side of the outer surface of the tilting control box (8). A screen plate (16) is fixedly connected to the bottom of the tilting transmission plate (15). The screen plate (16) is slidably embedded in the interior of the screening box (2). A transmission worm (18) is rotatably connected between the inner walls of the two sides of the tilting control box (8). A transmission worm wheel (17) is rotatably connected between the inner walls of the front and rear of the tilting control box (8). The transmission worm wheel (17) meshes with the transmission worm (18) and is fixedly connected to the tilting transmission plate (15).

2. The slag screening device for shield tunneling construction according to claim 1, characterized in that: A drive motor (13) is fixedly installed on one side of the outer surface of the displacement control box (4), and the output end of the drive motor (13) is fixedly connected to the transmission threaded rod (11).

3. The slag screening device for shield tunneling construction according to claim 1, characterized in that: A limiting rod (14) is fixedly connected between the inner walls of the two sides of the displacement control box (4), and the displacement transmission block (12) is slidably sleeved on the limiting rod (14).

4. The slag screening device for shield tunneling construction according to claim 1, characterized in that: A servo motor (19) is fixedly installed on one side of the outer surface of the tilting control box (8), and the output end of the servo motor (19) is fixedly connected to the transmission worm gear (18).

5. A slag screening device for shield tunneling construction according to claim 1, characterized in that: Each of the aforementioned buffer springs is slidably sleeved on the corresponding stabilizer bar (10).

6. A slag screening device for shield tunneling construction according to claim 1, characterized in that: Each of the stabilizer bars (10) is made of stainless steel.

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