Subway tunnel soil layer construction grouting equipment

Abstract

The present application relates to grouting equipment technical field, especially to a kind of subway tunnel soil construction grouting equipment.The equipment when carrying out soil surface crack repair, make grouting pipe be located in moving shell, then make lifting cover be provided on soil surface and discharge repair slurry through slurry outlet channel, finally increase the air pressure in lifting cover through air outlet pipe.The present application is under the premise that two components are independent of each other, and do not affect each other when working, setting lifting cover around grouting pipe outer circle, cooperate with the work of air outlet pipe to create micro-pressure grouting environment, whether it is used for surface scanning or used for deep grouting, can increase the depth and depth speed of grouting slurry in crack, greatly improve grouting effect.

Description

Technical Field

[0001] This invention relates to the field of grouting equipment technology, and in particular to a grouting equipment for soil layer construction in subway tunnels. Background Technology

[0002] During the construction of subway tunnels, in order to ensure the support strength of the tunnel surface, it is necessary to either clean and repair the surface cracks of the soil layer with grout or to penetrate into the soil layer to fill the pores with grout. The two repair methods have different requirements for grouting methods and equipment. However, the existing grouting equipment often only supports one of the grouting processes and is difficult to adapt to different grouting requirements. Therefore, a grouting equipment for subway tunnel soil layer construction is needed to support multiple grouting methods. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a grouting equipment for subway tunnel soil construction, which has the advantages of switchable grouting methods, high degree of automation, and good grouting effect.

[0004] To achieve the above objectives, the technical solution of the present invention is: a grouting device for soil layer construction in subway tunnels, comprising a movable housing, a penetration component, and a surface component. The penetration component includes a telescopic component, a lifting seat, and a grouting pipe. The telescopic component is located above the housing, one end of which is connected to the lifting seat and controls the vertical movement of the lifting seat. One end of the grouting pipe is connected to the lifting seat, and the other end of the grouting pipe passes through the movable housing and protrudes from the bottom of the movable housing during use. The other end of the grouting pipe is closed, and its side is provided with several grout outlets. The surface component includes a lifting sleeve, a second telescopic component, an air outlet pipe, and a grout outlet channel. The lifting sleeve is coaxially arranged with the grouting pipe. The second telescopic component is located inside the movable housing and connects the movable housing and the lifting sleeve to realize the lifting control of the lifting sleeve. The air outlet pipe is located at the bottom of the movable housing and is located in the inner ring of the lifting sleeve. The grout outlet channel is located on the inner wall of the lifting sleeve and is connected to an external grouting pipe. When repairing cracks on the soil surface, the grouting pipe is located inside the movable housing, the lifting sleeve is placed on the soil surface and the repair grout is discharged through the grout outlet channel, and then the air pressure inside the lifting sleeve is increased through the air outlet pipe.

[0005] Furthermore, the bottom of the slurry outlet channel extends toward the central axis of the lifting sleeve, and a dispersing element is rotatably provided on the extension. The dispersing element includes a lower fan blade and an upper fan cylinder. The lower fan blade corresponds to the outlet of the slurry outlet channel, and the upper fan cylinder is coaxially disposed above the lower fan blade. Several inclined dispersing plates are arranged around the side wall of the upper fan cylinder. The air outlet pipe corresponds to the upper fan cylinder, and the gas discharged from the air outlet pipe is directed toward the central axis of the upper fan cylinder, thereby driving the upper fan cylinder to rotate.

[0006] Furthermore, the movable housing is provided with a rotating seat, which has an inner spiral. The grouting pipe is rotatably connected to the lifting seat, and its outer ring is provided with a thread that meshes with the inner spiral.

[0007] Furthermore, the deepening component also includes a hinge that rotates to cover the pulp outlet.

[0008] Furthermore, the bottom of the grouting pipe is conical, and a support rod is provided radially on one side of the hinge. A sphere is provided on the support rod near the center of the grouting pipe.

[0009] Furthermore, the bottom of the grouting pipe is equipped with a bending plate.

[0010] Furthermore, the grouting equipment also includes a lifting frame, which includes a telescopic component three, a rectangular frame and wheels. Four wheels are located at the four corners of the rectangular frame. The movable housing is provided with two grooves into which two opposing frames in the rectangular frame can be inserted. The telescopic component three connects the bottom of the grooves and the frame.

[0011] Furthermore, the lifting frame also includes a limiting sleeve, and two other opposing frames on the rectangular frame are provided with limiting rods. The limiting sleeve is provided on the side wall of the movable housing, and the limiting rod is slidably disposed within the limiting sleeve.

[0012] Furthermore, the grouting equipment also includes a leveling assembly, which includes a drive unit and a cross scraper. The cross scraper is located at the bottom of the movable housing, and the drive unit is located inside the movable housing and drives the cross scraper to rotate. The two leveling assemblies are symmetrically arranged on the left and right sides of the grouting pipe. There is a time difference between the two cross scrapers. When started, the two cross scrapers operate alternately.

[0013] By adopting the above technical solution, the beneficial effects of the present invention are:

[0014] This invention places a lifting sleeve for surface grouting and a grouting pipe for deep grouting on the same coaxial axis. With both components operating independently and without interference, the lifting sleeve surrounds the grouting pipe, creating a low-pressure grouting environment in conjunction with the vent pipe. This increases the depth and speed of the injected grout in cracks, significantly improving the grouting effect, whether used for surface grouting or deep grouting. By providing grout outlets on the sidewalls of the grouting pipe, the sealing within the lifting sleeve is improved during surface grouting, and the grout wets the borehole sidewalls. Combined with the rotating motion of the grouting pipe during descent, this effectively enhances the grouting effect for deep grouting. The lifting sleeve not only raises and lowers the grout outlet channel for surface grouting but also provides a low-pressure environment for subsequent surface grouting, further improving the grouting effect.

[0015] This invention incorporates a dispersing element at the slurry outlet channel to increase the dispersing force of the slurry discharged from the channel, thereby improving the dispersion effect of the slurry during the surface slurry sweeping process. The upper fan cylinder corresponds to the air outlet pipe, which not only increases the dispersion speed of the air outlet pipe within the lifting sleeve but also accelerates the rotation speed of the lower fan blades. These two elements mutually promote each other, improving the kinetic energy utilization rate within the equipment. A hinged flap at the slurry outlet, opened by the grouting fluid, enhances the sealing of the lifting sleeve. A support rod, working in conjunction with a ball, allows the ball to move along a conical path at the bottom of the grouting pipe, limiting the flap's swing range and further diverting the slurry. A bending plate prevents slurry from adhering to the bottom of the grouting pipe, facilitating disassembly and cleaning. The lifting frame and groove increase the lifting range of the frame, ensuring the mobile housing can operate close to the ground while maintaining the drive capability of the large-sized wheels.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0017] Undoubtedly, such and other objects of the present invention will become more apparent after the following detailed description of the preferred embodiments, which are illustrated in various accompanying drawings and figures.

[0018] To make the above and other objects, features and advantages of the present invention more apparent and understandable, one or more preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0020] In the accompanying drawings, the same parts use the same reference numerals, and the drawings are schematic and not necessarily drawn to actual scale.

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one or more embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on such drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of a grouting device for subway tunnel soil construction according to the present invention;

[0023] Figure 2 This is another perspective view of the overall structure of a grouting device for subway tunnel soil construction according to the present invention;

[0024] Figure 3 This is a cross-sectional view of the internal structure of a grouting device for subway tunnel soil construction according to the present invention;

[0025] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle;

[0026] Figure 5 This is a cross-sectional view of the lifting sleeve in a grouting device for subway tunnel soil construction according to the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the dispersion component in a grouting device for subway tunnel soil construction according to the present invention;

[0028] Figure 7 This is a cross-sectional view of the deep component part of a grouting equipment for subway tunnel soil construction according to the present invention;

[0029] Figure 8 This is a bottom view of the grouting pipe in a grouting device for subway tunnel soil construction according to the present invention;

[0030] Figure 9 This is a schematic diagram of the lifting frame structure in a grouting equipment for subway tunnel soil construction according to the present invention;

[0031] Explanation of key figure labels:

[0032] 1-Moving housing;

[0033] 11-Spindle; 12-Groove;

[0034] 2- In-depth component analysis;

[0035] 21-Telescopic component 1; 22-Lifting seat; 23-Grouting pipe; 231-Grouting outlet; 232-Hinge; 233-Support rod; 234-Sphere; 235-Bending plate;

[0036] 3-Surface components;

[0037] 31-Lifting sleeve; 32-Telescopic component two; 33-Air outlet pipe; 34-Pulp outlet channel; 35-Dispersion component; 351-Lower fan blade; 352-Upper fan cylinder;

[0038] 4- Lifting frame;

[0039] 41-Telescopic component three; 42-Rectangular frame; 43-Wheel; 44-Limit sleeve; 45-Limit rod;

[0040] 5- Scraping component;

[0041] 51-Driver; 52-Cross scraper. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0043] Reference Figure 1-9 The present invention provides a technical solution: a grouting device for soil construction in subway tunnels. The device supports the insertion of a grouting pipe 23 into the opening for grouting after the opening is made. It is also applicable to the repair of cracks on the soil surface.

[0044] The grouting equipment includes a mobile housing 1, a penetration component 2, a surface component 3, a lifting frame 4, and a leveling component 5.

[0045] The deep-entry component 2 includes a telescopic component 21, a lifting seat 22, and a grouting pipe 23. The telescopic component 21 is located above the housing, with one end connected to the lifting seat 22. One end of the grouting pipe 23 is also connected to the lifting seat 22, specifically: the two are rotatably connected. A rotating seat 11 is provided inside the movable housing 1, with an inner spiral on the rotating seat 11. The outer ring of the grouting pipe 23 has threads that mesh with the inner spiral. The telescopic component 21 controls the up-and-down movement of the lifting seat 22, allowing the other end of the grouting pipe 23 to rotatably pass through the movable housing 1. During deep-entry grouting, the bottom of the grouting pipe 23 protrudes from the bottom of the movable housing 1 and then enters the opening for grouting. The grouting method involves sealing the other end of the grouting pipe 23 and then providing several grout outlets 231 around the side of the grouting pipe 23. To prevent grout from accumulating at the bottom of the grouting pipe 23, a bending plate 235 is provided at the bottom of the grouting pipe 23.

[0046] The surface component 3 includes a lifting sleeve 31, a telescopic component 32, an air outlet pipe 33, and a grout outlet channel 34. The lifting sleeve 31 is coaxially arranged with the grouting pipe 23. The telescopic component 32 is located inside the movable housing 1 and connects the movable housing 1 and the lifting sleeve 31 to achieve lifting control of the lifting sleeve 31. The air outlet pipe 33 is located at the bottom of the movable housing 1 and within the inner ring of the lifting sleeve 31. The air outlet pipe 33 is connected to an external pump or gas pipeline. There can be several grout outlet channels 34, which are located on the inner wall of the lifting sleeve 31 and are connected to an external grouting pipe through internal wiring in the lifting sleeve 31. Depending on the construction process, the corresponding grout is selected to be introduced into the grout outlet channel and the grouting pipe 23. When repairing surface cracks in the soil layer, the grouting pipe 23 is located inside the movable housing 1, the lifting sleeve 31 is placed over the soil surface, and the repair grout is discharged through the grout outlet channel 34. Then, the air pressure inside the lifting sleeve 31 is increased through the air outlet pipe 33.

[0047] To enhance the sealing of the grouting pipe 23 within the movable housing 1, the insertion assembly 2 also includes a hinge 232, which rotatably covers the grout outlet 231. During operation, the grout within the grouting pipe 23 pushes open the hinge 232. To limit the swing amplitude of the hinge 232 and divert the grout from the outlet 231, the bottom of the grouting pipe 23 is conical. A support rod 233 is radially positioned on one side of the hinge 232, and a ball 234 is positioned on the support rod 233 near the center of the grouting pipe 23. The ball 234 assists in the swing of the hinge 232 along the conical shape and limits its maximum swing amplitude. Simultaneously, the conical bottom prevents grout buildup.

[0048] To increase the uniform and rapid diffusion of slurry when sweeping the soil surface, the bottom of the slurry outlet channel 34 extends towards the central axis of the lifting sleeve 31, and a dispersing element 35 is rotatably mounted on the extension. The dispersing element 35 includes a lower fan blade 351 and an upper fan cylinder 352. The lower fan blade 351 corresponds to the outlet of the slurry outlet channel 34, and the upper fan cylinder 352 is coaxially located above the lower fan blade 351. Several inclined dispersing plates are arranged around the side wall of the upper fan cylinder 352. The air outlet pipe 33 corresponds to the upper fan cylinder 352, and the gas discharged from the air outlet pipe 33 is directed towards the central axis of the upper fan cylinder 352, thereby driving the upper fan cylinder 352 to rotate.

[0049] To increase the movement range of the mobile housing 1, the grouting equipment also includes a lifting frame 4. The lifting frame 4 includes a telescopic component 41, a rectangular frame 42, and wheels 43. The four wheels 43 are located at the four corners of the rectangular frame 42. The mobile housing 1 has two grooves 12 for two opposing sides of the rectangular frame 42 to be inserted into. The telescopic component 41 connects the bottom of the grooves 12 to the frame. The grooves 12 shorten the relative distance between the mobile housing 1 and the rectangular frame 42, reducing the area of ​​the mobile housing 1 touching the ground under the large wheels 43. To increase the stability of the lifting frame 4, the lifting frame 4 also includes a limiting sleeve 44. The other two opposing sides of the rectangular frame 42 are provided with limiting rods 45. The limiting sleeve 44 is located on the side wall of the mobile housing 1, and the limiting rods 45 are slidably disposed within the limiting sleeve 44.

[0050] To improve the automation of the grouting equipment, the grouting equipment also includes a leveling component 5. The leveling component 5 includes a drive component 51 and a cross scraper 52. The cross scraper 52 is located at the bottom of the movable housing 1. The drive component 51 is located inside the movable housing 1 and drives the cross scraper 52 to rotate. The two leveling components 5 are symmetrically arranged on the left and right sides of the grouting pipe 23. There is a time difference between the operation of the two cross scrapers 52. When started, the two cross scrapers 52 operate alternately.

[0051] Working principle: When performing grouting construction on the soil layer of the subway tunnel, the lifting sleeve 31 is housed in the movable housing 1. Then, the movable housing 1 is moved above the opening so that one end of the grouting pipe 23 is connected to the external grouting pipe. The telescopic component 21 is activated to allow the grouting pipe 23 to penetrate into the opening. Then, while rotating the grouting pipe 23 upward, grout is injected into the opening until it is full. After the grout in the grouting pipe 23 is emptied, the grouting pipe 23 is housed in the movable housing 1. The movable housing 1 is controlled to descend until the leveling component 5 is in contact with the ground and the ground is leveled. The lifting sleeve 31 is activated to descend and gas is injected into the lifting sleeve 31. If necessary, another type of grout can be sprayed onto the surface of the opening through the surface component 3 for sealing. During the repair of surface cracks in the tunnel soil, the lifting sleeve 31 is activated and placed over the surface to be treated. Then, the slurry is discharged through the slurry outlet channel 34. Simultaneously, the air outlet pipe 33 is activated to accelerate the rotation of the dispersing component 35. The slurry is leveled under the micro-pressure environment of the lifting sleeve 31. It should be noted that the fit between the lifting sleeve 31 and the ground is adjusted by the expansion joint 32 and the expansion joint 41. Because the ground is uneven, the lifting sleeve 31 is not completely sealed. As long as the gas flow rate discharged from the air outlet pipe 33 is greater than the gas escape velocity, it is sufficient. If necessary, the leveling component 5 and the lifting sleeve 31 can be used alternately.

[0052] It should be understood that the embodiments disclosed herein are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features as understood by those skilled in the art. It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0053] The term "embodiment" in this specification refers to a specific feature or characteristic described in connection with an embodiment that is included in at least one embodiment of the invention. Therefore, phrases or "embodiments" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0054] Furthermore, the described features or characteristics can be incorporated into one or more embodiments in any other suitable manner. In the above description, specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented without the aforementioned specific details or may be implemented using other methods, components, materials, etc.

Claims

1. A grouting device for soil layer construction in subway tunnels, characterized in that, Includes the moving housing, the deep-mounted components, and the surface components; The in-depth component includes a telescopic component, a lifting seat, and a grouting pipe. The telescopic component is located above the housing. One end of the telescopic component is connected to the lifting seat and controls the lifting seat to move up and down. One end of the grouting pipe is connected to the lifting seat. The other end of the grouting pipe passes through the movable housing and protrudes from the bottom of the movable housing during use. The other end of the grouting pipe is closed and its side is surrounded by several grout outlets. The surface component includes a lifting sleeve, a second telescopic component, an air outlet pipe, and a grout outlet channel. The lifting sleeve is coaxially arranged with the grouting pipe. The second telescopic component is located inside the movable housing and connects the movable housing and the lifting sleeve to realize the lifting control of the lifting sleeve. The air outlet pipe is located at the bottom of the movable housing and is located in the inner ring of the lifting sleeve. The grout outlet channel is located on the inner wall of the lifting sleeve and is connected to an external grouting pipe. When repairing surface cracks in the soil layer, the grouting pipe is located inside the movable housing, the lifting sleeve is placed on the soil surface and the repair grout is discharged through the grout outlet channel. Then, the air pressure inside the lifting sleeve is increased through the air outlet pipe. The bottom of the slurry outlet channel extends toward the central axis of the lifting sleeve. A dispersing element is rotatably provided on the extension. The dispersing element includes a lower fan blade and an upper fan cylinder. The lower fan blade corresponds to the outlet of the slurry outlet channel. The upper fan cylinder is coaxially arranged above the lower fan blade. Several inclined dispersing plates are arranged around the side wall of the upper fan cylinder. The air outlet pipe corresponds to the upper fan cylinder. The gas discharged from the air outlet pipe is directed toward the central axis of the upper fan cylinder, thereby driving the upper fan cylinder to rotate. The movable housing is equipped with a rotating seat, which has an inner spiral. The grouting pipe is rotatably connected to the lifting seat, and its outer ring is provided with a thread that meshes with the inner spiral. The deepening component also includes a hinge that rotates to cover the pulp outlet; The bottom of the grouting pipe is conical, and a support rod is provided radially on one side of the hinge. A sphere is provided on the support rod near the center of the grouting pipe.

2. The grouting equipment for subway tunnel soil construction according to claim 1, characterized in that, The bottom of the grouting pipe is equipped with a bending plate.

3. The grouting equipment for subway tunnel soil construction according to claim 1, characterized in that, It also includes a lifting frame, which includes a telescopic component three, a rectangular frame and wheels. Four wheels are located at the four corners of the rectangular frame. The movable housing has two grooves for two opposing frames in the rectangular frame to be inserted into. The telescopic component three connects the bottom of the grooves and the frame.

4. The grouting equipment for subway tunnel soil construction according to claim 3, characterized in that, The lifting frame also includes a limiting sleeve, and two other opposing frames on the rectangular frame are provided with limiting rods. The limiting sleeve is located on the side wall of the movable housing, and the limiting rods are slidably located within the limiting sleeve.

5. The grouting equipment for subway tunnel soil construction according to claim 3, characterized in that, It also includes a leveling assembly, which includes a drive unit and a cross scraper. The cross scraper is located at the bottom of the movable housing, and the drive unit is located inside the movable housing and drives the cross scraper to rotate. The two leveling assemblies are symmetrically arranged on the left and right sides of the grouting pipe. There is a time difference between the two cross scrapers. When started, the two cross scrapers operate alternately.

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