CN220522583U - Concrete spraying device for TBM construction - Google Patents

Abstract

The utility model discloses a concrete spraying device for TBM construction, which comprises a pipeline opening, a filtering shell and a conveying pipe, wherein a filter screen is fixedly arranged on the inner side wall of the filtering shell, a threaded sleeve is fixedly arranged at the bottom of the filtering shell, and a pollution discharge cover is movably connected in the threaded sleeve. If the pipeline is blocked, the concrete flows smoothly, so that the cohesiveness of the concrete and the wall surface can be influenced, and the engineering quality is influenced. The quality of concrete can be ensured to the setting filter screen, guarantees that the spraying effect is good, extension pipeline life: the concrete sprayer pipeline is often impacted by high-pressure water and high-pressure concrete and is easy to damage.

Description

Concrete spraying device for TBM construction

Technical Field

The utility model relates to the technical field of TBM construction, in particular to a concrete spraying device for TBM construction.

Background

The concrete sprayer is mainly used in TBM construction to spray concrete onto the surrounding rock surface rapidly in the tunneling process to form a lining so as to enhance the stability and waterproofness of the tunnel.

During TBM tunneling, a concrete sprayer is positioned at the center of the TBM machine to spray concrete through a nozzle onto the tunnel wall. The concrete sprayer operates on a principle similar to a spray gun, delivering concrete by pressure to a nozzle location, and spraying concrete through the nozzle to a desired location.

The pipe blockage of the concrete sprayer is a common problem, mainly because larger particles or other impurities possibly exist in the concrete, the pipe is easy to be blocked after a period of spraying and use, after the blocking phenomenon occurs, the spraying is stopped, the concrete is stopped being injected into the pipeline, and then the pipe is disassembled and cleaned.

Disclosure of Invention

The utility model aims to provide a concrete spraying device for TBM construction, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a concrete spraying device is used in TBM construction, includes pipeline mouth, filtration shell and conveyer pipe, one end and one side fixed connection of filtration shell of pipeline mouth, the screw hole is seted up to the opposite side of filtration shell, the one end and the opposite side threaded connection of filtration shell of conveyer pipe, the filtration shell inside wall is fixed to be provided with the filter screen, the fixed screw thread sleeve that is provided with in bottom of filtration shell, swing joint has the blowdown lid in the screw thread sleeve, the activity runs through on the filter screen has the pivot, the fixed cover of one end of pivot is equipped with the bull stick, fixedly connected with cleaning brush on the bull stick, one side of filter screen is fixed and is provided with the gear box, the fixed mounting bracket that is provided with in filtration shell top, the fixed motor that is provided with in the mounting bracket, the fixed one end that is provided with the transmission shaft of drive end, the transmission shaft runs through in the top of filtration shell and gear box respectively, the other end of transmission shaft is fixed and is provided with first bevel gear, the other end of pivot is fixed and is provided with the second bevel gear.

Preferably, the filter screen is connected with the rotating shaft through a sealing bearing, and the transmission shaft is also connected with the filter shell and the gear box through the sealing bearing.

Preferably, the diameter of the filter screen mesh is between 5mm and 10 mm.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the filter and the filter screen arranged at the pipeline opening can prevent large-particle concrete from flowing out of the pipeline, so that the downtime and the maintenance cost are reduced, and the quality of the concrete has a great influence on the engineering quality in the concrete spraying construction. If the pipeline is blocked, the concrete flows smoothly, so that the cohesiveness of the concrete and the wall surface can be influenced, and the engineering quality is influenced. The quality of concrete can be ensured to the setting filter screen, guarantees that the spraying effect is good, extension pipeline life: the concrete sprayer pipeline is often impacted by high-pressure water and high-pressure concrete and is easy to damage. The filter screen is arranged to prevent accumulated sundries in the pipeline and reduce the damage of the pipeline, so that the service life of the pipeline is prolonged, and the filtered impurities in the filter shell can be removed through the threaded sleeve and the sewage draining cover, so that the filter screen is convenient to clean regularly. The filter screen can be brushed through the motor, the first bevel gear, the second bevel gear, the transmission shaft, the rotating rod and the cleaning brush, so that the surface of the filter screen is prevented from being blocked, the filtering efficiency of the filter screen is improved, and the service life of the filter screen is prolonged.

Drawings

FIG. 1 is a schematic diagram of a front view of the present utility model;

FIG. 2 is an isometric cross-sectional structural schematic of a filter housing of the present utility model;

FIG. 3 is a schematic diagram of the front view of the filter screen, motor, gear box, rotating shaft, rotating rod and cleaning brush of the present utility model;

fig. 4 is a schematic diagram of the axial structure of the rotating shaft, the rotating rod and the cleaning brush of the present utility model.

In the figure: 1. pipeline opening; 2. a filter housing; 3. a delivery tube; 4. a filter screen; 5. a threaded sleeve; 6. a drain cover; 7. a rotating shaft; 8. a rotating rod; 9. cleaning brushes; 10. a gear box; 11. a mounting frame; 12. a motor; 13. a transmission shaft; 14. a first bevel gear; 15. and a second bevel gear.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the utility model provides a concrete spraying device for TBM construction, comprising a pipeline opening 1, a filter housing 2 and a conveying pipe 3, wherein one end of the pipeline opening 1 is fixedly connected with one side of the filter housing 2, the other end of the pipeline opening 1 is connected with an external concrete sprayer, a threaded hole is arranged on the other side of the filter housing 2, one end of the conveying pipe 3 is in threaded connection with the other side of the filter housing 2, a filter screen 4 is fixedly arranged on the inner side wall of the filter housing 2, the filter screen 4 is used for filtering large-particle concrete, a threaded sleeve 5 is fixedly arranged at the bottom of the filter housing 2, the threaded sleeve 5 is communicated with the filter housing 2, impurities filtered by the filter screen 4 are discharged through the threaded sleeve 5, a drain cover 6 is movably connected in the threaded sleeve 5, the drain cover 6 is used for blocking the threaded sleeve 5, a rotating shaft 7 movably penetrates through the filter screen 4, one end of the rotating shaft 7 is fixedly sleeved with a rotating rod 8, the rotating rod 8 is fixedly connected with a cleaning brush 9, one side of the filter screen 4 is fixedly provided with a gear box 10, the outer top of the filter housing 2 is fixedly provided with a mounting frame 11, the inner part of the mounting frame 11 is fixedly provided with a motor 12, the driving end of the motor 12 is fixedly provided with one end of a transmission shaft 13, the transmission shaft 13 respectively penetrates through the tops of the filter housing 2 and the gear box 10, the other end of the transmission shaft 13 is fixedly provided with a first bevel gear 14, the other end of the rotating shaft 7 is fixedly provided with a second bevel gear 15, when the filter screen 4 is cleaned, a worker starts the motor 12, the motor 12 drives the transmission shaft 13 and the first bevel gear 14 to rotate, the first bevel gear 14 drives the second bevel gear 15 meshed with the first bevel gear 14 to rotate, the second bevel gear 15 drives the rotating shaft 7, the rotating rod 8 and the cleaning brush 9 to rotate, thereby cleaning the surface of the filter screen 4 and preventing the surface of the filter screen 4 from being blocked.

Specifically, the filter screen 4 is connected to the rotary shaft 7 through a sealed bearing, and the transmission shaft 13 is also connected to the filter housing 2 and the gear case 10 through a sealed bearing.

Specifically, the diameter of the mesh of the filter screen 4 is between 5mm and 10 mm.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (3)

1. The utility model provides a concrete injection apparatus for TBM construction which characterized in that: including pipeline mouth (1), filtration shell (2) and conveyer pipe (3), one end of pipeline mouth (1) and one side fixed connection of filtration shell (2), the screw hole has been seted up to the opposite side of filtration shell (2), the one end of conveyer pipe (3) and the opposite side threaded connection of filtration shell (2), the fixed filter screen (4) that are provided with of filtration shell (2) inside wall, the fixed screw sleeve (5) that is provided with in the bottom of filtration shell (2), swing joint has blowdown lid (6) in screw sleeve (5), the activity is run through on filtration shell (4) has pivot (7), the fixed cover of one end of pivot (7) is equipped with bull stick (8), fixedly connected with cleaning brush (9) on bull stick (8), one side fixed of filtration shell (4) is provided with gear box (10), the fixed mounting bracket (11) in filtration shell (2) top, the fixed motor (12) that is provided with in mounting bracket (11), the drive end of motor (12) is provided with transmission shaft (13) fixedly, transmission shaft (13) are run through in the fixed transmission shaft (14) of a bevel gear (13) respectively, the other end of the rotating shaft (7) is fixedly provided with a second bevel gear (15).

2. The concrete spraying device for TBM construction of claim 1, wherein: the filter screen (4) is connected with the rotating shaft (7) through a sealing bearing, and the transmission shaft (13) is also connected with the filter shell (2) and the gear box (10) through the sealing bearing.

3. The concrete spraying device for TBM construction of claim 1, wherein: the diameter of the mesh of the filter screen (4) is 5mm-10 mm.