Vacuum auxiliary equipment for filling concrete and processing method

Abstract

The invention relates to vacuum auxiliary equipment for filling concrete, the auxiliary equipment is used for auxiliary processing of a spiral cavity steel pipe filled with the concrete, the auxiliary equipment is located at the other end, deviating from filling equipment, of the steel pipe, and the auxiliary equipment comprises a pipeline assembly and a vacuum pump assembly, comprising a vacuum tube communicated between the outside and the spiral cavity, and one end of the vacuum tube is connected to the exhaust and drainage port; and the vacuum pump is connected with the other end, far away from the gas and water discharging opening, of the vacuum pipe, and the vacuum pump is used for discharging gas in the spiral cavity. The auxiliary equipment and the concrete conveying device are installed at the two ends of the steel pipe body respectively, mutual interference between the auxiliary equipment and the concrete conveying device is avoided through the layout design, and in the vacuum auxiliary filling process, the removal efficiency of bubbles and water in concrete is remarkably improved through the negative pressure effect; the negative effects of bubbles and water seepage on the strength and durability of the concrete structure are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of concrete steel pipe combined structures, and in particular to vacuum-assisted equipment and a processing method for filling concrete. Background Art

[0002] The steel tube structure filled with concrete in the interlayer cavity of the tube wall is a special pipe structure, that is, concrete is poured into the steel tube and compacted to increase the strength and rigidity of the steel tube. It has unique mechanical properties and application advantages. Concrete has high compressive strength, but weak bending resistance, while steel, especially steel sections, has strong bending resistance and good elastic plasticity, but it is easy to become unstable and lose axial compressive resistance when under pressure. Steel tube concrete can combine the advantages of the two in structure, which can put the concrete in a lateral compression state, and its compressive strength can be doubled. At the same time, due to the presence of concrete, the instability buckling of the steel tube structure in all directions is limited, and the rigidity of the steel tube is improved. The two reinforce each other, thereby greatly improving various mechanical properties. The steel and concrete composite structure has been applied in actual engineering projects and has shown good performance.

[0003] In the conventional technology, the process of filling steel pipe with concrete is complicated, especially the inner cavity between double-layer steel pipes is filled with concrete. Since the pipe is long in longitudinal length, the cavity between the inner and outer layers is narrow and spiral, which increases the difficulty of the filling process and reduces the yield rate. In particular, the applicant independently developed a double-layer steel pipe with a spiral cavity, and the interlayer between the two layers of steel pipe walls has a spiral ring plate, so that the longitudinal section of the steel pipe wall is a continuous "I" shape (or "O" shape), and another steel pipe with a corrugated outer wall, such as Figure 1 , 2 As shown in FIG. 1 , these steel pipes have higher strength among double-layer steel pipes, but they also face the problems of inconvenient processing and low processing efficiency. In order to solve the above problems, the applicant has developed a steel pipe, a filling device and a method for injecting concrete from the grouting port on the sealing plate at one end of the steel pipe body by utilizing the centrifugal force generated by the rotation of the steel pipe body and the gravity of the concrete, such as Figure 3 , 4 The above method can eliminate delamination and larger bubbles in the spiral cavity, but there will still be smaller bubbles and a small amount of seepage water, which will affect the density of the concrete. Summary of the invention

[0004] Based on this, it is necessary to provide a steel pipe, filling equipment and method for injecting concrete by rotating the steel pipe body to address the above technical problems, as well as auxiliary equipment and processing methods to help reduce problems such as bubbles and water seepage.

[0005] A vacuum auxiliary device for filling concrete, the auxiliary device is used to assist in processing a spiral cavity steel pipe filled with concrete, the steel pipe comprises a pipe body and a spiral ring plate, the pipe body comprises an inner pipe and an outer pipe, a receiving cavity is formed between the inner pipe and the outer pipe; the spiral ring plate is arranged between the inner pipe and the outer pipe, and the spiral ring plate divides the receiving cavity into a spiral cavity; one end of the steel pipe is provided with a grouting port for connecting the spiral cavity with the outside, an exhaust and drainage port, and a concrete filling device;

[0006] The auxiliary equipment is located at the other end of the steel pipe away from the concrete filling equipment, and the auxiliary equipment includes:

[0007] A pipeline assembly, comprising a vacuum tube connected between the outside and the spiral cavity, one end of the vacuum tube being connected to the exhaust and drainage port; and

[0008] A vacuum pump is connected to the other end of the vacuum tube away from the concrete filling device, and the vacuum pump is used to extract the gas in the spiral cavity to form a negative pressure in the spiral cavity.

[0009] In one embodiment, the vacuum tube includes a first vacuum tube and a second vacuum tube, the first vacuum tube is connected between the second vacuum tube and the vacuum pump, the second vacuum tube is connected between the first vacuum tube and the exhaust drain port, and the first vacuum tube is arranged along the axis of the steel pipe.

[0010] In one embodiment, the second vacuum tube extends along the wall surface of the steel pipe to the end where the grouting port is located.

[0011] In one embodiment, the first vacuum tube and the second vacuum tube are rotatably connected via a rotating pipe joint, and the second vacuum tube rotates around the axis of the first vacuum tube as the steel tube rotates.

[0012] In one embodiment, a plurality of the second vacuum tubes are provided, and each of the second vacuum tubes corresponds to an independent spiral cavity.

[0013] In one embodiment, the second vacuum tube is made of a flexible transparent material.

[0014] In one of the embodiments, the swivel pipe joint is placed on a fixed bracket.

[0015] In one embodiment, the pipeline assembly further includes a slurry storage box respectively arranged on the first vacuum tube and the second vacuum tube, and a valve respectively arranged on the first vacuum tube and the second vacuum tube.

[0016] In one embodiment, the second vacuum tube is connected to a position of the slurry storage box corresponding to a side of the outer end of the steel pipe.

[0017] In one of the embodiments, the steel pipe is raised by a lifting device to raise one side of the grouting port of the steel pipe.

[0018] A vacuum-assisted processing method for filling concrete, using the above-mentioned vacuum-assisted equipment for filling concrete, comprises the following steps:

[0019] Rotating the spiral cavity steel pipe;

[0020] The spiral cavity is filled with concrete from one end of the steel pipe, and the gas in the spiral cavity is extracted from the other end of the steel pipe.

[0021] The present invention application has the following technical effects:

[0022] 1) Optimization of the layout of auxiliary equipment: The auxiliary equipment and concrete conveying device are installed at both ends of the steel pipe body. This layout design cleverly avoids mutual interference between the two. Since these two processes need to occupy the axis of the steel pipe body independently, it is impossible to set them on the same side. This separate layout ensures that each process can run efficiently without interference, thereby improving the overall construction efficiency.

[0023] 2) Bubble removal: During the vacuum-assisted filling process, the negative pressure significantly improves the efficiency of removing bubbles from the concrete. Since the negative pressure can generate strong suction, it can extract the bubbles in the concrete more thoroughly, thereby reducing the negative impact of bubbles on the strength and durability of the concrete structure.

[0024] 3) Water extraction: In addition to air bubbles, vacuum technology can effectively and more thoroughly extract excess water from the concrete. This extraction helps reduce water seepage in concrete, ensures the uniformity and density of concrete, and thus improves the final quality of concrete.

[0025] 4) Improvement of concrete density: Through vacuum-assisted filling technology, the density of concrete has been significantly improved. As air bubbles and excess water are effectively removed, the porosity of concrete is reduced, which not only enhances the compressive strength of concrete, but also improves its durability and impermeability.

[0026] 5) Vacuum filling technology ensures that there will be no delamination between the concrete and the steel tube structure. As the density of the concrete increases, its bond with the steel tube becomes stronger, which helps to improve the stability and bearing capacity of the entire steel tube concrete structure.

[0027] 6) Vacuum-assisted filling technology can also speed up the flow of concrete in the spiral cavity, thereby improving filling efficiency. This rapid flow helps to reduce the time consumption during the filling process, while also reducing the risk of structural defects caused by uneven filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of the unconcrete-filled steel pipe on which this application is based.

[0029] Figure 2 This is a schematic diagram of the structure of a steel pipe when the outer pipe on which this application is based is a corrugated pipe.

[0030] Figure 3 Schematic diagram of the structure of the steel pipe and filling equipment on which this application is based.

[0031] Figure 4 Schematic diagram of the process of filling concrete with the filling equipment on which this application is based.

[0032] Figure 5 This is a schematic diagram of the structure of steel pipes and auxiliary equipment in one embodiment of the present application.

[0033] Figure 6 for Figure 5 Schematic diagram of the structure of the auxiliary equipment viewed from direction A.

[0034] Description of Figure Numbers:

[0035] 100, steel pipe; 101, axis line; 110, pipe body; 111, outer pipe; 112, inner pipe; 113, spiral cavity; 120, spiral ring plate; 130, ring-shaped sealing plate; 131, grouting port; 132, exhaust and drainage port; 140, concrete; 200, filling equipment; 210, first pipeline; 211, grouting valve; 220, second pipeline; 230, concrete conveying device; 240, rotating pipe joint; 241, fixing part; 250, exhaust pipe; 251, exhaust valve; 260, rotary drive device; 300, auxiliary equipment; 310, vacuum pump; 320, pipeline assembly; 321, first vacuum tube; 322, second vacuum tube; 323, rotating pipe joint; 324, fixed bracket; 330, slurry storage box. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0037] See also Figure 1-4 , Figure 1 , 2 The schematic diagram of the structure of the spiral welded steel pipe 100 with a spiral interlayer on the pipe wall based on the present application is shown. Figure 3 , 4 The processing equipment for filling the above-mentioned steel pipe 100 with concrete (hereinafter referred to as concrete filling equipment 200 ) on which the present application is based is shown.

[0038] The steel pipe 100 and the concrete filling device 200 are briefly introduced below.

[0039] The steel pipe 100 includes a pipe body 110, a spiral ring plate 120 and concrete 140. The pipe body 110 includes an inner pipe 112 and an outer pipe 111, and the outer pipe 111 is sleeved on the inner pipe 112 at intervals to form a receiving cavity between the inner pipe 112 and the outer pipe 111. The spiral ring plate 120 is arranged in the receiving cavity, the inner periphery of the spiral ring plate 120 is connected to the outer surface of the inner pipe 112, and the outer periphery of the spiral ring plate 120 is connected to the inner surface of the outer pipe 111, and the spiral ring plate 120 divides the receiving cavity into a spiral cavity 113. The concrete 140 is arranged in the spiral cavity 113, and the concrete 140 is injected into the spiral cavity 113 from one end of the pipe body 110 by the rotation of the pipe body 110 around the axis 101.

[0040] Through the self-rotation of the tube body 110, under the dual effects of centrifugal force and gravity, the flow and filling of the concrete 140 in the spiral cavity are smoother, which helps to improve the filling efficiency; the centrifugal force can help overcome the resistance of the concrete 140 in the flow process, so that the concrete 140 can fill the inner cavity of the steel pipe 100 faster. Due to the effect of centrifugal force, the gas in the cavity is more easily discharged during the filling process of the concrete 140. This process helps to reduce the bubbles inside the concrete 140, avoid hollowing and delamination caused by bubbles, thereby improving the density and overall performance of the concrete 140 and forming a smooth exhaust channel. The pressure in the cavity of the steel pipe 100 is kept at a low level, avoiding the risk of bulging or deformation of the pipe wall due to excessive pressure. The vibration generated by the steel pipe 100 body 110 during the rotation process can play a vibrating role, which helps to discharge and compact the bubbles inside the concrete 140, and improve the strength and durability of the concrete 140. This technology can effectively solve the problem that the sharp corners between the annular sealing plate and the spiral ring at the end of the steel pipe 100 body 110 are difficult to fill, ensuring that the concrete 140 can be evenly filled into every corner and filled more fully. This technology can easily form a matching production line with other processes such as cutting, welding, and anti-corrosion treatment of the steel pipe 100, realize automated and continuous production, and improve overall construction efficiency.

[0041] In one embodiment, the axis 101 of the pipe body 110 is at a preset angle to the horizon, so that one side of the grouting port of the steel pipe is raised. The horizon is defined as the horizontal placement surface of the pipe body 110 during operation. The axis 101 of the pipe body 110 is at a preset angle to the horizon, that is, the pipe body 110 is inclined relative to the horizontal placement surface. The preset angle is 5-30°. Preferably, the preset angle can be, for example, 5°, 8°, 10°, 15°, or 20°.

[0042] For the double-layer steel pipe 100 with a spiral cavity 113, after research, there are two processing methods that can be used, one is the "jacking method" and the other is the "horizontal method". The jacking method is to first seal the interlayers at both ends of the pipe body 110 with a plugging ring, stand the pipe body 110 upright, and inject grout from the grouting port 131 on the bottom end of the plugging ring of the pipe body 110. The concrete 140 is a self-leveling fine stone concrete 140 with good fluidity. Grouting is continued until the slurry is discharged from the slurry outlet at the top of the pipe, and then the filling is stopped and solidified, and no pores and void layers will be generated. However, the construction safety of erecting the pipe body 110 is poor, and when the pipe body 110 is long, the grouting pressure is large, which is easy to cause the bottom end pipe wall to bulge and deform, and the yield rate is low. In addition, the height requirement for the factory building is too high. The "horizontal method" is to place the pipe body 110 horizontally and fill the spiral cavity 113 with concrete 140. This method requires opening an exhaust hole and a water discharge hole above each spiral cavity of the pipe body 110. The filling method is complicated, and after the filling is completed, each hole must be welded and sealed and secondary anti-corrosion is performed, and there are many processes. The welding and sealing of each hole is also a difficult point in quality control. The pipe body 110 that is appropriately tilted at a preset angle can effectively avoid excessive occupation of the processing space, avoid excessive grouting pressure causing local bulging of the pipe wall, and also avoid the process of opening multiple holes in the pipe body 110 and then sealing it, avoiding affecting the structural strength of the pipe body 110. The design of raising the steel pipe 100 on one side of the grouting port 131 is conducive to the flow and compaction of the concrete 140 in the cavity. The pipe body 110 that is appropriately tilted at a preset angle is also easier to make the gas move obliquely upward along the outer tube 111 and discharge the steel pipe 100 when rotating, further improving the filling quality of the concrete 140 and the stability of the structure.

[0043] In one embodiment, the rotation direction of the tube body 110 around the axis 101 is opposite to the spiral advancement direction of the spiral ring plate 120. That is, in the side cross-sectional view shown in the figure, when the spiral advancement direction of the spiral ring plate 120 is perpendicular to the paper surface, the tube body 110 should rotate clockwise around the axis 101, and at this time, the concrete 140 slurry can move deeper along the spiral ring plate 120 under the centrifugal force, gravity and conveying drive.

[0044] In one embodiment, the outer tube 111 is a straight tube, or the outer tube 111 is a corrugated tube. A straight tube is a cylindrical tube structure surrounded by a straight steel plate. A corrugated tube is a cylindrical tube structure surrounded by a corrugated steel plate and having corrugated protrusions and depressions on the outer surface. Figure 2 , 3 As shown, when the outer tube 111 is a corrugated tube, the corrugations of the corrugated tube are spiral, and the troughs of the corrugations of the outer tube 111 can abut against the outer surface of the inner tube 112. When each abutting point is welded to the inner tube 112, the weld can serve as a spiral ring plate 120. At this time, the height of the spiral ring plate 120 is extremely small, and a spiral cavity 113 is formed between adjacent welds and the inner tube 112.

[0045] The inner tube 112 is a straight tube, or the inner tube 112 is a corrugated tube. The corrugated shape of the inner tube 112 may correspond to the appearance, and the inner wall of the inner tube 112 forms an inner cavity as the inner cavity of the steel tube 100.

[0046] In one embodiment, the steel pipe 100 further includes an annular sealing plate 130, which is disposed at both ends of the inner tube 112 and the outer tube 111, and at least one of the annular sealing plates 130 is provided with a grouting port 131 and an exhaust and drainage port 132 both of which are connected to the outside.

[0047] Specifically, the annular plugging serves as the two end faces of the steel pipe 100 to block the accommodating cavity. Preferably, only the annular plugging plate 130 at one end of the steel pipe 100 is provided with a grouting port 131, and the side where the grouting port 131 is provided is viewed in the direction of the pipe body 110, such as Figure 5 , 6 As shown, the pipe body 110 should rotate in a counterclockwise direction, and the concrete 140 slurry can move toward a deeper direction after entering from the grouting port 131 .

[0048] The grouting port 131 and the exhaust and drainage port 132 are arranged at intervals to prevent the newly injected concrete 140 slurry from being directly discharged. Preferably, the exhaust and drainage port 132 is located at a position where the annular plug is closer to the inner tube 112, for example, the exhaust and drainage port 132 is located within 20% of the minimum distance between the inner tube 112 and the outer tube 111, so that the slurry can be more fully accumulated starting from the outer tube 111. Preferably, the grouting port 131 is located at a position where the annular plug is closer to the inner tube 112, for example, the grouting port 131 is located within 20% of the minimum distance between the inner tube 112 and the outer tube 111, so that the slurry can be more fully accumulated starting from the outer tube 111. Multiple grouting ports 131 and exhaust and drainage ports 132 can be provided.

[0049] Since the grouting port 131 and the exhaust and drainage port 132 are located on the annular seal, air and moisture can be smoothly discharged from one end of the steel pipe 100 during the filling process of the concrete 140. Therefore, there is no need to set additional exhaust and drainage ports 132 and water discharge holes on the circumferential surface of the pipe body 110, which simplifies the structural design of the pipe body 110.

[0050] In one embodiment, the concrete 140 is dry hard concrete 140, and an expansion agent may be contained in the concrete 140. When the dry hard concrete 140 is used, due to its low slump, when the grouting port 131 pipe is removed after filling, the concrete 140 can be self-shaped and is not easy to flow, thereby avoiding the formation of hollows in the port, and ensuring the compactness and uniformity of the concrete 140 filling.

[0051] like Figure 3 , 4 As shown, the concrete filling device 200 is used to process the spiral cavity steel pipe 100 filled with concrete 140 as described above. The concrete filling device 200 includes a concrete conveying device 230, a pipeline assembly and a rotary drive device. The concrete conveying device 230 is used to convey concrete 140 to the steel pipe 100. The pipeline assembly includes a pipeline connected to the concrete conveying device 230 and the spiral cavity 113 and a valve arranged on the pipeline. The rotary drive device 260 is connected to the steel pipe 100 in a transmission manner. The rotary drive device is used to support the pipe body and drive the pipe body to rotate around the axis. The rotary drive device 260 is arranged at the bottom of the steel pipe 100. The rotary drive device 260 is connected to the outer pipe 111 in a transmission manner and can abut against the outer wall of the outer pipe 111. The rotary drive device 260 rotates and drives the outer pipe 111 to rotate through friction.

[0052] In one embodiment, the discharge port of the concrete conveying device 230 is located on the axis 101 , and the pipeline assembly is connected between the discharge port and the spiral cavity 113 .

[0053] In one embodiment, the pipeline assembly includes a first pipeline 210 and a second pipeline 220, the first pipeline 210 is connected between the second pipeline 220 and the spiral cavity 113, the second pipeline 220 is connected between the first pipeline 210 and the discharge port, and the second pipeline 220 is arranged along the axis 101.

[0054] In one embodiment, the first pipe 210 and the second pipe 220 are rotatably connected via a rotating pipe joint 240, and the first pipe 210 rotates around the second pipe 220 as the pipe body 110 rotates. Specifically, a rotating structure is provided in the rotating pipe joint 240, so that the connection structures at both ends can directly rotate relative to each other. The two ends of the rotating pipe joint 240 are respectively connected to the inlet of the first pipe 210 and the outlet of the second pipe 220. When the pipe body 110 rotates, the first pipe 210 is driven to rotate around the second pipe 220. The main body of the rotating pipe joint 240 is fixed at a preset position by a fixing member 241.

[0055] In one embodiment, the first pipe 210 is provided in plurality, and each of the first pipes 210 corresponds to an independent spiral cavity 113. Accordingly, there are multiple discharge ports, each of which corresponds to one first pipe 210, and at least one discharge port corresponds to an independent spiral cavity 113. When the first pipe 210 is provided in plurality, the rotary pipe joint 240 is a one-to-many structure, and the rotary pipe joint 240 has a fixed body with an inlet, a rotatable body, and a plurality of outlets on the rotatable body. The fixed body is fixed at a preset position by a fixing member 241.

[0056] A grouting valve 211 is further provided between the first pipeline 210 and the grouting port 131. The concrete filling device 200 further includes an exhaust pipe 250 provided at the exhaust and drainage port 132, and an exhaust valve 251 is provided between the exhaust and drainage port 132 and the exhaust pipe 250.

[0057] In one embodiment, the first pipe 210 is made of a flexible material, such as a rubber hose, a polyurethane hose, a PVC hose, etc. Preferably, the first pipe 210 is a rubber hose.

[0058] See also Figure 5 , 6 , Figure 5 , 6 The schematic diagram of the structure of the auxiliary device 300300 of an embodiment of the present application is shown. The auxiliary device 300 is used to assist in processing the spiral cavity steel pipe 100 filled with concrete 140. The auxiliary device 300 is located at the other end of the steel pipe 100 away from the concrete filling device 200. The auxiliary device 300 includes a pipeline assembly 320 and a vacuum pump 310. The pipeline assembly 320 includes a vacuum tube connected between the outside and the spiral cavity 113, and one end of the vacuum tube is connected to the exhaust and drain port 132. The vacuum pump 310 is connected to the other end of the vacuum tube away from the concrete filling device 200 and away from the exhaust and drain port 132. The vacuum pump 310 is used to extract the gas in the spiral cavity 113 to form a negative pressure in the spiral cavity.

[0059] By setting up the auxiliary equipment 300, the auxiliary equipment 300 and the concrete 140 conveying device are respectively installed at the two ends of the steel pipe 100 body 110. This layout design cleverly avoids mutual interference between the two. The separated layout ensures that each process can run efficiently without interference, thereby improving the overall construction efficiency; in the vacuum-assisted filling process, the effect of negative pressure significantly improves the removal efficiency of bubbles inside the concrete 140. Since the negative pressure can generate a strong suction force, it can extract the bubbles in the concrete 140 more thoroughly, thereby reducing the negative impact of the bubbles on the structural strength and durability of the concrete 140; in addition to bubbles, the vacuum technology can also effectively and more thoroughly extract the excess moisture inside the concrete 140; the density of the concrete 140 has been significantly improved, and the porosity of the concrete 140 has been reduced, which not only enhances the compressive strength of the concrete 140, but also improves its durability and impermeability; ensuring that there will be no delamination between the concrete 140 and the steel pipe 100 structure. As the density of concrete 140 increases, its combination with steel pipe 100 becomes stronger, which helps to improve the stability and bearing capacity of the entire steel pipe 100 concrete 140 structure; it can also speed up the flow rate of concrete 140 in the spiral cavity 113, thereby improving the filling efficiency, helping to reduce the time consumption during the filling process, and also reducing the risk of structural defects caused by uneven filling.

[0060] Further, the vacuum pump 310 is one of a vacuum pump 310, a micro vacuum pump 310, a micro air pump, a micro vacuum pump, and a micro vacuum pump. The vacuum pump 310 runs at a preset power for a preset time to ensure that the vacuum degree in the vacuum tube and the spiral cavity 113 reaches a standard atmospheric pressure value of less than 50%, preferably, less than 30% of the standard atmospheric pressure value.

[0061] In one embodiment, the vacuum tube includes a first vacuum tube 321 and a second vacuum tube 322, the first vacuum tube 321 is connected between the second vacuum tube 322 and the vacuum pump 310, the second vacuum tube 322 is connected between the first vacuum tube 321 and the exhaust drain port 132, and the first vacuum tube 321 is arranged along the axis 101 of the steel pipe 100.

[0062] Specifically, the first vacuum tube 321 and the second vacuum tube 322 , the first vacuum tube 321 and the vacuum pump 310 , and the second vacuum tube 322 and the exhaust and drainage port 132 are all sealed and connected, and a quick-release structure can be used for the sealed connection.

[0063] In one embodiment, the second vacuum tube 322 extends along the wall surface of the steel tube 100 to the end where the grouting port 131 is located.

[0064] Specifically, there are a plurality of exhaust and drainage ports 132, including a portion located at one end of the steel pipe 100 on the same side as the grouting port 131 and a portion located at one end of the steel pipe 100 away from the grouting port 131, that is, exhaust and drainage ports 132 are provided at both ends of the steel pipe 100. Figure 5 The auxiliary device 300 is located at the second end ( Figure 5 The left end shown in the figure), the grouting port 131 is located at the first end, and when the second vacuum tube 322 is connected to the exhaust and drainage port 132 at the first end, it needs to extend from the second end to the first end along the inner surface or outer surface of the pipe wall of the steel pipe 100. The inner surface or outer surface of the pipe wall of the steel pipe 100 may be provided with a component for fixing the second vacuum tube 322.

[0065] In one embodiment, the first vacuum tube 321 and the second vacuum tube 322 are rotatably connected via a rotating pipe joint 323 , and the second vacuum tube 322 rotates around the axis 101 of the first vacuum tube 321 as the steel tube 100 rotates.

[0066] Specifically, a rotating structure is provided inside the rotating tube joint 323, which can make the connection structures at both ends directly rotate relative to each other. The two ends of the rotating tube joint 323 are respectively connected to the outlet of the first vacuum tube 321 and the inlet of the second vacuum tube 322. When the tube body 110110 rotates, the second vacuum tube 322 is driven to rotate around the first vacuum tube 321. In one embodiment, the rotating tube joint 323 is placed on a fixed bracket 324, and the main body of the rotating tube joint 323 is fixed at a preset position by the fixed bracket 324.

[0067] In one embodiment, there are multiple second vacuum tubes 322, and each second vacuum tube 322 corresponds to an independent spiral cavity 113. There are multiple second vacuum tubes 322, and multiple second vacuum tubes 322 constitute a branch of the first vacuum tube 321. Each exhaust and drainage port 132 is connected to a second vacuum tube 322, and at least one exhaust and drainage port 132 corresponds to an independent spiral cavity 113113. When there are multiple second vacuum tubes 322, the rotating pipe joint 323 is a one-to-many structure, and the rotating pipe joint 323 has a fixed body with an inlet, a rotatable body, and multiple outlets on the rotatable body.

[0068] In one embodiment, the second vacuum tube 322 is made of a flexible transparent material and can be a rubber tube, a polyurethane hose, a PVC hose, etc.

[0069] In one embodiment, the pipeline assembly 320 further includes a slurry storage box 330 respectively arranged on the first vacuum tube 321 and / or the second vacuum tube 322, and valves respectively arranged on the first vacuum tube 321 and the second vacuum tube 322. The second vacuum tube 322 is connected to a position of the slurry storage box 330 corresponding to the outer end of the steel pipe 100.

[0070] Specifically, the slurry storage box 330 is sealed and connected to the first vacuum tube 321 and / or the second vacuum tube 322 respectively, and the slurry storage box 330 is used to accommodate part of the concrete 140 slurry that is sucked out. The first vacuum tube 321 and the second vacuum tube 322 are respectively connected to the upper part of the slurry storage box 330, so that the gas can flow in the upper part while the slurry can enter the lower part and be stored. Preferably, a slurry storage box 330 is required to be provided on each second vacuum tube 322, and the second vacuum tube 322 is divided by the slurry storage box 330 into a section located between the exhaust and drainage port 132 and the slurry storage box 330 and a section located between the rotating pipe joint 323 and the slurry storage box 330. The slurry storage box 330 is made of transparent material, and the transparent material of the second vacuum tube 322 can be visually observed in conjunction with the slurry storage box 330.

[0071] In one embodiment, the steel pipe 100 is raised by a lifting device to raise one side of the grouting port 131 of the steel pipe 100 .

[0072] The working process of the auxiliary device 300 is briefly described below.

[0073] First, install and connect the various parts and components of the auxiliary equipment 300, and close the valve of the exhaust and drainage port 132 on the side where the vacuum pump 310 is located (the first end of the steel pipe 100). Start the rotation drive device 260, and the pipe body 110 of the steel pipe 100 begins to rotate. When the concrete filling device 200 at the other end of the pipe body 110 begins to inject concrete 140 into the spiral cavity 113 of the pipe body 110 of the steel pipe 100 (or after a certain volume of concrete 140 is injected), start the vacuum pump 310 to start vacuuming. The second vacuum tube 322 starts to rotate with the steel pipe 100 body 110 with the rotatable joint and the axis 101 of the steel pipe 100 body 110 as the axis. When the spiral cavity of the steel pipe 100 body 110 is filled with concrete 140 and concrete 140 slurry appears in the second vacuum tube 322 at one end of the grouting port 131 (or when slurry appears in the slurry storage box 330 at this end), the valve of the exhaust and drainage port 132 on the steel pipe 100 body 110 on the side of the vacuum pump 310 is opened. When concrete 140 slurry appears in the slurry storage box 330 or the second vacuum tube 322 connected to the exhaust and drainage port 132, all the exhaust hole valves are closed, and the grouting port 131 valve is closed. At this point, the vacuum-assisted concrete 140 filling construction is completed.

[0074] An embodiment of the present application further provides a vacuum-assisted method for filling concrete, using the above-mentioned vacuum-assisted device for filling concrete, comprising the steps of:

[0075] S100, rotating the spiral cavity steel pipe 100;

[0076] S200 , filling the spiral cavity with concrete from one end of the steel pipe 100 , and extracting the gas in the spiral cavity 113 from the other end of the steel pipe 100 .

[0077] Specifically, before step S100 , the steps of setting the position and elevation angle of the steel pipe 100 , connecting and installing the concrete filling equipment 200 , and connecting and installing the auxiliary equipment 300 are included.

[0078] Step S100 includes the steps of: starting the rotation driving device 260 to rotate the spiral cavity steel pipe at a preset power, so that the spiral cavity steel pipe rotates around the axis 101 at a constant or linear speed.

[0079] Step S200 includes the following steps:

[0080] S210, using the concrete filling device 200 to inject concrete slurry into the steel pipe 100 from the grouting port 131 at a preset flow rate;

[0081] S220, when the injected concrete slurry accounts for 10%-60% of the volume of the spiral cavity 113, the auxiliary equipment 300 is used to extract the gas in the spiral cavity 113 from the side of the steel pipe 100 away from the grouting port 131 with a preset power; preferably, when the injected concrete slurry accounts for 20%, 30%, 40%, 50% of the volume of the spiral cavity 113, the auxiliary equipment 300 is used to extract the gas;

[0082] Or, while injecting concrete slurry, start the auxiliary device 300 to extract the gas in the spiral cavity 113 from the side of the steel pipe away from the grouting port 131 with a preset power;

[0083] During step S220 , the steel pipe 100 is kept rotating, and the second vacuum tube 322 rotates along with the tube body 110 of the steel pipe 100 with the rotatable joint and the axis 101 of the tube body 110 of the steel pipe 100 as the axis.

[0084] S230, when the concrete slurry fills the spiral cavity 113, stop extracting gas and stop injecting concrete slurry. It can be understood that stopping extracting gas and stopping injecting concrete slurry can be performed simultaneously or successively.

[0085] As a preferred method, when the spiral cavity of the steel pipe 100 body 110 is filled with concrete 140 and concrete 140 slurry appears in the second vacuum tube 322 at one end of the grouting port 131 (or when slurry appears in the slurry storage box 330 at this end), it is judged that the standard for stopping gas extraction has been met, and the valve of the exhaust and drainage port 132 on the steel pipe 100 on the side of the vacuum pump 310 (i.e., the side where the auxiliary equipment 300 is located) is opened. When concrete 140 slurry appears in the slurry storage box 330 or the second vacuum tube 322 connected to the exhaust and drainage port 132, it is judged that the standard for stopping the injection of concrete slurry has been met, and all exhaust hole valves and the concrete filling equipment 200 are closed.

[0086] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0087] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0088] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0089] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0090] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0091] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A vacuum-assisted device for filling concrete, characterized in that: The auxiliary equipment is used to assist in processing a spiral cavity steel pipe filled with concrete, the steel pipe comprises a pipe body and a spiral ring plate, the pipe body comprises an inner pipe and an outer pipe, a receiving cavity is formed between the inner pipe and the outer pipe; the spiral ring plate is arranged between the inner pipe and the outer pipe, and the spiral ring plate divides the receiving cavity into a spiral cavity; one end of the steel pipe is provided with a grouting port, an exhaust and drainage port, and a concrete filling device for connecting the spiral cavity with the outside; The auxiliary equipment is located at the other end of the steel pipe away from the concrete filling equipment, and the auxiliary equipment includes: A pipeline assembly, comprising a vacuum tube connected between the outside and the spiral cavity, one end of the vacuum tube being connected to the exhaust and drainage port; and A vacuum pump is connected to the other end of the vacuum tube away from the concrete filling device, and the vacuum pump is used to extract the gas in the spiral cavity to form a negative pressure in the spiral cavity.

2. The vacuum-assisted device for filling concrete according to claim 1, characterized in that: The vacuum tube includes a first vacuum tube and a second vacuum tube, the first vacuum tube is connected between the second vacuum tube and the vacuum pump, the second vacuum tube is connected between the first vacuum tube and the exhaust drain port, and the first vacuum tube is arranged along the axis of the steel pipe.

3. The vacuum-assisted device for filling concrete according to claim 2, characterized in that: The second vacuum tube extends along the wall surface of the steel pipe to reach one end where the grouting port is located.

4. The vacuum-assisted device for filling concrete according to claim 2, characterized in that: The first vacuum tube and the second vacuum tube are rotatably connected via a rotating pipe joint, and the second vacuum tube rotates around the axis of the first vacuum tube as the steel tube rotates.

5. The vacuum-assisted device for filling concrete according to claim 4, characterized in that: There are a plurality of the second vacuum tubes, and each of the second vacuum tubes corresponds to an independent spiral cavity.

6. The vacuum-assisted device for filling concrete according to claim 4, characterized in that: The second vacuum tube is made of flexible and transparent material.

7. The vacuum-assisted device for filling concrete according to claim 4, characterized in that: The rotating pipe joint is placed on a fixed bracket.

8. The vacuum-assisted device for filling concrete according to claim 2, characterized in that: The pipeline assembly also includes a slurry storage box respectively arranged on the first vacuum pipe and the second vacuum pipe, and a valve respectively arranged on the first vacuum pipe and the second vacuum pipe. And / or, the second vacuum tube is connected to a position of the slurry storage box corresponding to a side of the outer end of the steel pipe.

9. The vacuum-assisted device for filling concrete according to claim 1, characterized in that: The steel pipe is lifted up at one side of the grouting port of the steel pipe by means of a lifting device.

10. A vacuum-assisted processing method for filling concrete, characterized in that: The vacuum-assisted device for filling concrete according to any one of claims 1 to 9 comprises the following steps: Rotating the spiral cavity steel pipe; The spiral cavity is filled with concrete from one end of the steel pipe, and the gas in the spiral cavity is extracted from the other end of the steel pipe.

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