Device for cleaning shield tail sludge of shield tunneling machine

Abstract

The utility model belongs to the technical field of shield tunneling, and particularly relates to a device for cleaning shield tail sludge of a shield tunneling machine, which comprises a dustpan-shaped sludge inlet, a connecting shaft arranged at one end of the sludge inlet, a pipe joint welded on the side surface of the other end of the sludge inlet, a hose sleeved on the pipe joint, and a steel pipe connected with the hose, a mud outlet is formed in the upper end of the steel pipe and located over the shield belt conveyor, and a speed reducer and a motor are installed at the upper end of the mud outlet. And the lower end of a shaftless spiral auger blade is fixed on the connecting shaft in the sludge inlet, and the upper end of the shaftless spiral auger blade is fixed on the output shaft of the speed reducer. The device is simple in structure, normal operation of a shield tunneling machine is not affected, sludge can be conveyed to a shield belt conveyor through rotation of the shaftless spiral auger blade, the sludge only needs to be continuously shoveled to a sludge inlet manually during use, and compared with traditional manual sludge bagging and clearing, efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of shield machines, and particularly relates to a device for cleaning mud residue at the tail of a shield machine. Background Art

[0002] During the excavation process, the earth pressure balance shield machine will cause some mud residue to accumulate at the tail of the shield due to leakage and cleaning, especially when the abnormal working condition of mud residue gushing appears at the slag outlet of the screw machine, there will be a large amount of mud residue at the tail of the shield. The mud residue at the tail of the shield must be cleaned before assembling a new ring of segments. At present, the diaphragm pump of the shield machine has limited mud residue cleaning capacity. The site mostly uses additional mud pumps or manual bagging for cleaning. Due to its own structure and working characteristics, the mud pump needs to continuously add water to cover the pump blades to pump out the mud residue, resulting in low efficiency and incomplete cleaning; the efficiency of manual bagging is even lower, and the low efficiency of mud residue cleaning at the tail of the shield seriously affects the efficiency of shield construction. Summary of the invention

[0003] The problem to be solved by the present invention is to overcome the shortcomings of the background technology and provide a device for cleaning the tail mud of a shield machine.

[0004] The present invention is achieved through the following technical solutions:

[0005] A device for cleaning mud residue at the tail of a shield machine comprises a dustpan-shaped mud inlet, a bearing seat welded to the side of one end of the mud inlet, a bearing installed on the bearing seat, a horizontal connecting shaft installed on the bearing, the connecting shaft is located in the mud inlet, a pipe joint connected to the mud inlet is welded to the side of the other end of the mud inlet, a hose is sleeved on the pipe joint outside the mud inlet, the hose is fixed to the pipe joint through a pipe clamp, the upper end of the hose is connected to a steel pipe through the pipe clamp, the steel pipe is fixed to the side of a shield screw machine, the upper end of the steel pipe is connected to a mud outlet, the mud outlet is located directly above a shield belt conveyor, a reducer is installed at the mud outlet, and the reducer is connected to a motor; the lower end of a shaftless spiral auger blade is fixed to the connecting shaft in the mud inlet, the shaftless spiral auger blade passes through the mud inlet, the pipe joint, the hose, the steel pipe and the mud outlet in sequence, and the upper end of the shaftless spiral auger blade is fixed to the output shaft of the reducer.

[0006] Preferably, a grille is hinged at the opening above the mud inlet.

[0007] Preferably, the grille is hinged to the shell of the mud inlet via a hinge.

[0008] Preferably, handles are welded on the top and sides of the shell of the mud inlet.

[0009] Preferably, the hose is a wear-resistant rubber hose.

[0010] Preferably, a plurality of angle iron brackets are welded to the side surfaces of the shield screw machine, and the steel pipes are fixed on the angle iron brackets.

[0011] Preferably, a maintenance cover plate is provided on the steel pipe.

[0012] Preferably, a water pipe joint is installed on the steel pipe.

[0013] Preferably, an extension port is installed downward at the mud outlet.

[0014] Preferably, the shaftless spiral auger blade is fixed to the connecting shaft or the output shaft of the reducer by U-bolts.

[0015] The device of the present invention has a simple structure, low processing and manufacturing cost, and is installed in the original equipment space of the shield machine without affecting the normal operation of the shield machine. When in use, lower the hose section of the device, insert the mud inlet into the mud residue, start the motor, and the mud residue can be transported to the shield belt conveyor through the rotation of the shaftless spiral auger blade. During use, it only needs to continuously shovel the mud residue to the mud inlet manually. Compared with the traditional manual bagging and cleaning of mud residue, the efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram after the installation of the present invention;

[0017] Figure 2 is a schematic structural diagram of the mud inlet of the present invention.

[0018] In the figure, 1 is the mud inlet, 2 is the pipe clamp, 3 is the hose, 4 is the water pipe joint, 5 is the maintenance cover plate, 6 is the steel pipe, 7 is the mud outlet, 8 is the motor, 9 is the reducer, 10 is the extension port, 11 is the shield auger, 12 is the bearing seat, 13 is the handle, 14 is the hinge, 15 is the grille, 16 is the shaftless spiral auger blade, 17 is the U-bolt, 18 is the connecting shaft, 19 is the shield segment erector, 20 is the shield belt conveyor, and 21 is the mud residue. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0020] The device of the present invention is installed on the side of the shield screw conveyor 11. The front half of the device is the mud inlet 1 and the hose 3, and the rear half is the steel pipe 6 and the mud outlet 7. A shaftless screw auger blade 16 is arranged in the hose 3 and the steel pipe 6, and the shaftless screw auger blade 16 is driven by a motor 8 and a speed reducer 9. The front half of the device can move within a certain range. When the shield machine is working, the front half is suspended on the shield screw conveyor 11 without affecting the operation of moving parts such as the shield segment erector 19. When cleaning the tail shield slag 21, place the mud inlet 1 of the device at the place where the tail shield needs to be cleaned, start the motor 8 to rotate the shaftless screw auger blade 16 to bring the slag 21 to the shield belt conveyor 20, and the shield belt conveyor 20 transports the slag 21 out.

[0021] The structure of the device of the present invention is specifically as follows: it includes a mud inlet 1, a hose 3, a steel pipe 6, a mud outlet 7, a shaftless screw auger blade 16, a mud outlet 7, a motor 8, and a speed reducer 9. Among them, the mud inlet 1 is formed by welding thin steel plates. To facilitate cleaning the slag 21 at the lowest point on the ground, the mud inlet 1 is made in a dustpan shape. One end of the mud inlet 1 is welded with a bearing seat 12, a bearing is installed in the bearing seat 12, the bearing is sealed, a horizontal connecting shaft 18 is installed on the bearing, the connecting shaft 18 can rotate in the bearing, the connecting shaft 18 is located inside the mud inlet 1, and the connecting shaft 18 is used to fix the shaftless screw auger blade 16. A through hole is provided on the connecting shaft 18 for a U-shaped bolt 17 specifically for fixing the shaftless screw auger blade 16 to pass through. A pipe joint is welded at the other end of the mud inlet 1, and the pipe joint is communicated with the side of the mud inlet 1. A grille 15 welded by steel bars is provided at the open top of the mud inlet 1. The grille 15 is connected to the housing of the mud inlet 1 through a hinge 14. The grille 15 can be put down to prevent large-volume foreign objects from entering the mud inlet 1 to ensure safety, and the grille 15 can be opened during equipment maintenance and cleaning. Handles 13 are welded on the top and side of the housing of the mud inlet 1 to facilitate the operator to hold and hang the device.

[0022] Put the hose 3 on the pipe joint, and the hose 3 is fastened to the pipe joint through a pipe clamp 2. Preferably, the hose 3 is made of wear-resistant rubber hose.

[0023] The rear half of the device is a steel pipe 6, and the steel pipe 6 and the hose 3 are fastened and connected together through a pipe clamp 2. A number of angle iron brackets are welded on the side of the fuselage of the shield screw conveyor 11, and the steel pipe 6 is fixed on the angle iron brackets, and the steel pipe 6 is fixed on the side of the shield screw conveyor 11 through the angle iron brackets. An inspection cover plate 5 is provided on the steel pipe 6, and the inspection cover plate 5 can be removed to facilitate device maintenance and cleaning. A water pipe joint 4 is also welded on the steel pipe 6, and the water pipe joint 4 can be used to connect an external water pipe for cleaning the shaftless screw auger blade 16 inside the device.

[0024] The upper end of the steel pipe 6 is connected to the mud outlet 7 welded by thin steel plates. The mud outlet 7 is directly above the shield belt conveyor 20, and the slag 21 coming out of the mud outlet 7 can fall onto the conveyor belt of the shield belt conveyor 20. To prevent the splashing of the slag 21, it is preferred that the mud outlet 7 is installed with an extension port 10 downward, and the extension port 10 is made of rubber or thick canvas. A speed reducer 9 and a motor 8 are installed at the mud outlet 7, and the speed reducer 9 is connected to the motor 8.

[0025] The lower end of the shaftless spiral auger blade 16 is fixed on the connecting shaft 18 in the mud inlet 1 through a U-bolt 17. The shaftless spiral auger blade 16 is sleeved on the connecting shaft 18, and the U-bolt 17 dedicated to fixing the shaftless spiral auger blade 16 is used to clamp the shaftless spiral auger blade 16, pass through the through hole on the connecting shaft 18, and tighten the nut on the U-bolt 17 to fix the shaftless spiral auger blade 16 and the connecting shaft 18 together. The shaftless spiral auger blade 16 passes through the mud inlet 1, enters the hose 3 through the pipe joint at the mud inlet 1, then passes upward through the steel pipe 6 and the mud outlet 7. The upper end of the shaftless spiral auger blade 16 is also fixed on the output shaft of the speed reducer 9 through a U-bolt 17. The shaftless spiral auger blade 16 is continuous throughout the device, and the material is manganese steel, which has the characteristics of good wear resistance and elasticity. The U-bolt 17, the shaftless spiral auger blade 16, and the method of fixing the shaftless spiral auger blade 16 with the U-bolt 17 are all common existing components and operations, and will not be elaborated here too much.

[0026] During use, lower the device hose 3, insert the mud inlet 1 into the slag 21, start the motor 8, and the motor 8 drives the shaftless spiral auger blade 16 to rotate in the steel pipe 6, the hose 3 and the mud inlet 1. The slag 21 can be transported from the mud outlet 7 to the shield belt conveyor 20 through the shaftless spiral auger blade 16. During use, it only needs to manually shovel the slag 21 to the mud inlet 1 continuously. Theoretically, this device can remove about 4-5 cubic meters of slag 21 per hour, which greatly improves the efficiency compared with the traditional manual bagging and removal of slag 21.

[0027] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A device for cleaning the tail mud of a shield machine, characterized in that: The invention comprises a dustpan-shaped mud inlet (1), a bearing seat (12) is welded to the side of one end of the mud inlet (1), a bearing is installed on the bearing seat (12), a horizontal connecting shaft (18) is installed on the bearing, the connecting shaft (18) is located in the mud inlet (1), a pipe joint connected to the mud inlet (1) is welded to the side of the other end of the mud inlet (1), a hose (3) is sleeved on the pipe joint outside the mud inlet (1), the hose (3) is fixed to the pipe joint through a pipe clamp (2), the upper end of the hose (3) is connected to a steel pipe (6) through the pipe clamp (2), and the steel pipe (6) is fixed on the shield screw machine (1). 1) side, the upper end of the steel pipe (6) is connected to the mud outlet (7), the mud outlet (7) is located directly above the shield belt conveyor (20), a reducer (9) is installed at the mud outlet (7), and the reducer (9) is connected to the motor (8); the lower end of the shaftless spiral auger blade (16) is fixed on the connecting shaft (18) in the mud inlet (1), the shaftless spiral auger blade (16) passes through the mud inlet (1), the pipe joint, the hose (3), the steel pipe (6) and the mud outlet (7) in sequence, and the upper end of the shaftless spiral auger blade (16) is fixed on the output shaft of the reducer (9).

2. The device for cleaning the tail mud of a shield machine according to claim 1 is characterized in that: A grille (15) is hingedly connected to the open portion above the mud inlet (1).

3. The device for cleaning the tail mud of a shield machine according to claim 2 is characterized in that: The grille (15) is hingedly connected to the shell of the mud inlet (1) via a hinge (14).

4. The device for cleaning the tail mud of a shield machine according to claim 1 is characterized in that: Handles (13) are welded to the top and side of the shell of the mud inlet (1).

5. The device for cleaning the tail mud of a shield machine according to claim 1, characterized in that: The hose (3) is a wear-resistant rubber hose.

6. The device for cleaning the tail mud of a shield machine according to claim 1, characterized in that: A plurality of angle iron brackets are welded to the side of the shield screw machine (11), and the steel pipes (6) are fixed on the angle iron brackets.

7. The device for cleaning the tail mud of a shield machine according to claim 1, characterized in that: The steel pipe (6) is provided with an inspection cover plate (5).

8. The device for cleaning the tail mud of a shield machine according to claim 1, characterized in that: A water pipe joint (4) is installed on the steel pipe (6).

9. The device for cleaning the tail mud of a shield machine according to claim 1, characterized in that: The mud outlet (7) is provided with an extension opening (10) downwardly.

10. The device for cleaning the tail mud of a shield machine according to claim 1, characterized in that: The shaftless spiral auger blade (16) is fixed to a connecting shaft (18) or an output shaft of a reducer (9) via a U-shaped bolt (17).

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