Synchronous grouting device for SMW pile profile steel recovery
By designing the valve structure and limit structure in the SMW pile removal synchronous filling device, the problem of easy clogging of cement slurry during grouting is solved, and the smoothness of the grouting process and construction efficiency are improved.
Patent Information
- Application Number
- CN202421192168.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-29
AI Technical Summary
The existing SMW pile removal synchronous filling device is prone to deformation of the rubber plug during the grouting process, causing cement slurry to enter the grouting pipe, causing blockage, which in turn affects the smoothness of grouting.
A synchronous grouting device for SMW pile steel recycling is designed. By setting a valve structure and a limit structure at the bottom of the grouting pipe, the cooperation of springs and pistons is used to ensure that the mortar can be discharged to the steel bottom through the through holes when injected. avoid blockage in the internal space at the end.
Effectively prevent cement from clogging the grouting pipe, ensuring smooth grouting process, and improving construction efficiency and material utilization.
Smart Images
Figure CN222456099U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of foundation pit engineering, in particular to a synchronous grouting device for recovering SMW pile steel. Background Art
[0002] The reinforced soil-cement mixing wall method (SMW method for short) uses a multi-axis deep mixer (TRD / CSM equipment) to drill and cut on site, and inject cement slurry at the same time. Before the cement slurry solidifies, the steel is inserted into the mixing pile wall, so that the steel and cement slurry together form a composite underground continuous wall that can both block soil and water. After the construction is completed, the steel in the wall needs to be pulled out and recycled to reduce the waste of steel. After the steel is pulled out, a cavity with the same size as the steel is left in the wall, and cement slurry needs to be continued to be filled into the cavity.
[0003] When some existing SMW method pile extraction and synchronous filling devices are in use, the lower end of the grouting steel pipe is blocked by a rubber plug to prevent cement slurry from entering the grouting steel pipe before the cement wall solidifies, thereby avoiding the grouting steel pipe from being blocked; however, the grouting steel pipe needs to be inserted into the method pile to a depth of more than ten meters. The pressure of the cement slurry on the rubber plug makes the rubber plug easily deformed and shrinks in the grouting steel pipe, thereby causing part of the cement to solidify at the lower ends of the left and right grouting steel pipes. When the grouting machine injects slurry into the grouting steel pipe, it will encounter a situation where the rubber plug cannot be flushed off the grouting pipe, resulting in grouting failure.
[0004] Therefore, it is necessary to provide a new synchronous grouting device for SMW pile steel recovery to solve the above technical problems. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a synchronous grouting device for SMW pile steel recovery, which can effectively prevent cement from clogging a grouting pipe and ensure a smooth grouting process.
[0006] The utility model provides a synchronous grouting device for SMW pile steel recovery, comprising: a fixed angle steel; a grouting structure, wherein the grouting structure is welded to the inner side wall of the fixed angle steel, the grouting structure comprises a grouting pipe and a chute, the grouting pipe is welded to the inner side wall of the fixed angle steel, and the chute is arranged inside the bottom end of the grouting pipe; a guide structure, wherein the guide structure is connected to the top end of the grouting pipe, the guide structure comprises a joint, and the joint is connected to the top end of the grouting pipe; a steel section, wherein the fixed angle steel is welded to the angle of the inner side wall of the steel section; a valve structure, wherein the valve structure is installed at Inside the bottom end of the grouting pipe, the valve structure includes an outer sleeve, a sealing gasket, an inner pipe and a through hole, the inner pipe is slidably connected to the inside of the bottom end of the grouting pipe, the outer sleeve is fixedly connected to the bottom end of the inner pipe, the through holes are respectively arranged on the side walls of the outer sleeve and the inner pipe, the sealing gasket is fixed to the inner and outer side walls of the outer sleeve; a limiting structure, the limiting structure is fixed to the top surface inside the slide groove, the limiting structure includes a second spring and a telescopic rod, the top end of the telescopic rod is fixed to the top surface inside the slide groove, and the second spring is sleeved on the periphery of the even-numbered telescopic rods.
[0007] Preferably, the guiding structure further comprises a catheter and a shunt tube, one end of the catheter is connected to the top end of the joint, and the shunt tube is connected to the other end of the catheter.
[0008] Preferably, a group of the shunt tubes are respectively connected to the two conduits, and the flow rate of the shunt tubes is equal to the sum of the flow rates of the two conduits.
[0009] Preferably, two grouting pipes are provided, and the two grouting pipes are respectively fixed to the inner side wall angles at both ends of the steel section through the fixed angle steels, and the two grouting pipes are relatively parallel.
[0010] Preferably, the valve structure also includes a first spring, a piston, a limit block and a limit groove, the limit block is fixed to the inner wall of the top opening of the inner pipe, the piston is blocked by the inner wall of the limit block, the first spring is supported between the bottom end of the piston and the inner bottom surface of the inner pipe, and the limit groove is arranged between the inner pipe and the outer sleeve.
[0011] Preferably, the top end of the piston is semicircular, and the piston slides on the inner wall of the inner pipe, and the bottom end diameter of the piston is consistent with the inner diameter of the inner pipe.
[0012] Preferably, the outer sleeve slides inside the slide groove, and the sealing gasket seals the gap between the outer sleeve and the slide groove, and the top end of the outer sleeve is fixedly connected to the bottom end of the second spring, and the bottom end of the telescopic rod is fixed to the top surface of the outer sleeve, and the outer sleeve and the inner pipe slide between the inner side wall of the slide groove and the side wall of the bottom end of the grouting pipe through the limiting groove.
[0013] Compared with the related art, the synchronous grouting device for SMW pile steel recovery provided by the utility model has the following beneficial effects:
[0014] The utility model provides a synchronous grouting device for recovering SMW pile steel. First, the grouting structure is fixed to the angle of the inner wall of the steel by welding through the fixed angle steel, so that the grouting structure can increase the connection strength with the steel through the fixed angle steel, and can reduce the adhesion strength between the concrete layer and the grouting structure, so that when it is hoisted in the later stage, the grouting structure can rise synchronously with the steel. When the steel is hoisted, the top of the grouting structure is connected with the guide structure, so that the guide structure is connected with the inside of the grouting structure, and then the mortar is pumped by a mortar pump and transported to the inside of the grouting structure through the guide structure. When the steel is hoisted to a certain height, the injected mortar is Under the pressure of the mortar pump, the valve structure pulls the limiting structure to extend, so that the valve structure is pushed out from the bottom end of the grouting structure into the internal space at the bottom end of the steel section, and at the same time, the piston is pushed to slide downward, so that the through hole provided on the side wall of the valve is opened, and then the mortar is discharged into the internal space at the bottom end of the steel section through the through hole to fill the space, and then the steel section is lifted synchronously according to the amount of mortar injected, so that the steel section begins to be supported on its inner wall following the filled mortar, and when the grouting is completed, the piston is reset under the support of the first spring, and the through hole is closed, thereby effectively preventing the mortar from flowing back. This device has the advantage of effectively preventing the cement from clogging the grouting pipe and ensuring the smooth grouting process. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A structural schematic diagram of a preferred embodiment of a synchronous grouting device for SMW pile steel recovery provided by the utility model;
[0016] Figure 2 for Figure 1 The overall schematic diagram of the structure from a top view is shown;
[0017] Figure 3 for Figure 1 A schematic diagram of the structure of the valve structure section shown;
[0018] Figure 4 for Figure 3 The schematic diagram of the overall structure of the valve shown;
[0019] Figure 5 for Figure 3 The enlarged structural diagram of the A part shown;
[0020] Figure 6 for Figure 1 The schematic diagram of the structure showing the connection between the grouting pipe and the steel section from a top view.
[0021] Numbers in the figure: 1. fixed angle steel, 2. grouting structure, 21. grouting pipe, 22. slide, 3. guiding structure, 31. joint, 32. conduit, 33. shunt pipe, 4. steel section, 5. valve structure, 51. outer sleeve, 52. sealing gasket, 53. inner pipe, 54. through hole, 55. first spring, 56. piston, 57. limit block, 58. limit groove, 6. limit structure, 61. second spring, 62. telescopic rod. DETAILED DESCRIPTION
[0022] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.
[0023] Please refer to Figure 1-6 ,in Figure 1 A structural schematic diagram of a preferred embodiment of a synchronous grouting device for SMW pile steel recovery provided by the utility model; Figure 2 for Figure 1 The overall schematic diagram of the structure from a top view is shown; Figure 3 for Figure 1 A schematic diagram of the structure of the valve structure section shown; Figure 4 for Figure 3 The schematic diagram of the overall structure of the valve shown; Figure 5 for Figure 1 The enlarged structural diagram of the A part shown; Figure 6 for Figure 1The schematic diagram of the structure of the grouting pipe connected to the steel section from above, the synchronous grouting device for SMW pile steel recovery includes: a fixed angle steel 1; a grouting structure 2, the grouting structure 2 is welded to the inner wall of the fixed angle steel 1, the grouting structure 2 includes a grouting pipe 21 and a chute 22, the grouting pipe 21 is welded to the inner wall of the fixed angle steel 1, and the chute 22 is arranged inside the bottom end of the grouting pipe 21; a guiding structure 3, the guiding structure 3 is connected to the top of the grouting pipe 21, the guiding structure 3 includes a joint 31, and the joint 31 is connected to the top of the grouting pipe 21; a steel section 4, the fixed angle steel 1 is welded to the angle of the inner wall of the steel section 4; a valve structure 5, the valve structure 5 is installed at the The valve structure 5 comprises an outer sleeve 51, a sealing gasket 52, an inner pipe 53 and a through hole 54 inside the bottom end of the grouting pipe 21, the inner pipe 53 is slidably connected to the inside of the bottom end of the grouting pipe 21, the outer sleeve 51 is fixedly connected to the bottom end of the inner pipe 53, the through hole 54 is respectively arranged on the side walls of the outer sleeve 51 and the inner pipe 53, the sealing gasket 52 is fixed to the inner and outer side walls of the outer sleeve 51; a limiting structure 6, the limiting structure 6 is fixed to the top surface inside the slide groove 22, the limiting structure 6 comprises a second spring 61 and a telescopic rod 62, the top end of the telescopic rod 62 is fixed to the top surface inside the slide groove 22, and the second spring 61 is sleeved on the periphery of the even-numbered telescopic rods 62.
[0024] In the specific implementation process, Figure 1 , Figure 2 and Figure 5 As shown, the guiding structure 3 also includes a conduit 32 and a shunt pipe 33, one end of the conduit 32 is connected to the top of the joint 31, and the shunt pipe 33 is connected to the other end of the conduit 32; a group of the shunt pipes 33 are respectively connected to two of the conduits 32, and the flow rate of the shunt pipe 33 is equal to the sum of the flow rates of the two conduits 32; two grouting pipes 21 are provided, and the two grouting pipes 21 are respectively fixed to the inner side wall angles at both ends of the steel section 4 through the fixed angle steel 1, and the two grouting pipes 21 are relatively parallel.
[0025] This facilitates the diversion pipe 33 to inject an equal amount of mortar into the interior of the grouting pipe 21 through the two conduits 32 , and then discharge the mortar through the bottom end thereof under the guidance of the grouting pipe 21 .
[0026] In the specific implementation process, Figure 3 , Figure 4 and Figure 5As shown, the valve structure 5 further includes a first spring 55, a piston 56, a limit block 57 and a limit groove 58. The limit block 57 is fixed to the inner side wall of the top opening of the inner delivery pipe 53, and the piston 56 is blocked by the inner side wall of the limit block 57. The first spring 55 is supported between the bottom end of the piston 56 and the inner bottom surface of the inner delivery pipe 53, and the limit groove 58 is provided between the inner delivery pipe 53 and the outer sleeve 51; the top end of the piston 56 is semicircular, and the piston 56 slides on the inner side wall of the inner delivery pipe 53. And the bottom end diameter of the piston 56 is consistent with the inner diameter of the inner pipe 53; the outer sleeve 51 slides inside the slide groove 22, and the sealing gasket 52 seals the gap between the outer sleeve 51 and the slide groove 22, and the top end of the outer sleeve 51 is fixedly connected to the bottom end of the second spring 61, and the bottom end of the telescopic rod 62 is fixed to the top surface of the outer sleeve 51, and the outer sleeve 51 and the inner pipe 53 slide between the inner side wall of the slide groove 22 and the side wall of the bottom end of the grouting pipe 21 through the limiting groove 58.
[0027] It is convenient for the second spring 61 to limit the position of the outer sleeve 51, so that the bottom end of the outer sleeve 51 closes the bottom end of the grouting pipe 21, and then the first spring 55 supports the piston 56 to close the top opening of the inner pipe 53, thereby making the bottom end of the grouting pipe 21 in a closed state.
[0028] The working principle of the synchronous grouting device for SMW pile steel recovery provided by the utility model is as follows:
[0029] When in use, firstly, the two groups of grouting pipes 21 are fixed to the angles of the inner side walls at both ends of the profile steel 4 through the fixed angle steel 1, and then the conduit 32 is connected to the top of the grouting pipe 21 through the joint 31, so that the shunt pipe 33 is communicated with the grouting pipe 21 through the conduit 32. During grouting, firstly, a steel cable is passed through the hanging hole provided on the side wall at the bottom end of the profile steel 4 to connect with the crane, and the profile steel 4 is pulled up in a vertically upward state by operating the crane. Then, when the profile steel 4 is lifted to a certain height, the bottom end of the profile steel 4 is suspended and connected to the grouting pump through the shunt pipe 33, so that the grouting pump transports the mortar through the shunt pipe 33 to the inside of the grouting pipe 21. Under the pressure of the mortar transported by the grouting pump, the mortar first pushes the piston 56 to compress the first spring 55, so that the piston 56 slides downward in the inner delivery pipe 53, so that the through hole 54 closed by the side wall of the piston 56 is opened. The force will push the inner delivery pipe 53 to slide downward inside the bottom end of the grouting pipe 21, and then drive the outer sleeve 51 to slide downward from the inside of the slide groove 22, so that it pulls the second spring 61 to extend, so that the outer sleeve 51 slides out of the inside of the bottom end of the grouting pipe 21, and then the outer sleeve 51 is in the space at the bottom end of the steel section 4, and then the mortar in the grouting pipe 21 is discharged through the inner delivery pipe 53 and the through holes 54 provided on the side walls of the outer sleeve 51 as the pressure pushes, and then the mortar is filled into the space at the bottom end of the steel section 4, and then the steel section 4 is lifted according to the amount of injected mortar, so that when the mortar is injected, the steel section 4 can support and prevent the inner wall from collapsing; after use, it is passed through clean water to rinse off the residual mortar inside it, which is convenient for later reuse, making the construction and grouting of the cast-in-place pile easier, and this device has the advantages of effectively preventing cement from clogging the grouting pipe 21 and ensuring the smooth grouting process.
[0030] Compared with the related art, the synchronous grouting device for SMW pile steel recovery provided by the utility model has the following beneficial effects:
[0031] The utility model provides a synchronous grouting device for SMW pile steel recovery. First, the grouting structure 2 is welded and fixed to the angle of the inner wall of the steel 4 by the fixed angle steel 1, so that the grouting structure 2 can increase the connection strength with the steel 4 through the fixed angle steel 1, and can reduce the adhesion strength between the concrete layer and the grouting structure 2, so that when it is hoisted in the later stage, the grouting structure 2 can rise synchronously with the steel 4. When the steel 4 is hoisted, the top of the grouting structure 2 is connected with the guide structure 3, so that the guide structure 3 is connected with the inside of the grouting structure 2, and then the mortar is pumped by the mortar pump to be transported to the inside of the grouting structure 2 through the guide structure 3. When the steel 4 is hoisted to a certain height, the injected mortar is transported to the inside of the grouting structure 2. Under the pressure of the pump, the valve structure 5 pulls the limiting structure 6 to extend, so that the valve structure 5 is pushed out from the bottom end of the grouting structure 2 into the internal space at the bottom end of the steel section 4. At the same time, the piston 56 is pushed to slide downward, so that the through hole 54 provided on the side wall of the valve is opened, and then the mortar is discharged into the internal space at the bottom end of the steel section 4 through the through hole 54 to fill the space. Then, according to the amount of mortar injected, the steel section 4 is synchronously lifted, so that the steel section 4 begins to be supported on its inner wall following the filled mortar. When the grouting is completed, the piston 56 is reset under the support of the first spring 55, and the through hole 54 is closed, thereby effectively preventing the mortar from flowing back. This device has the advantage of effectively preventing cement from clogging the grouting pipe 21 and ensuring a smooth grouting process.
[0032] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A synchronous grouting device for SMW pile steel recovery, characterized in that: include: Fixing angle steel (1); A grouting structure (2), the grouting structure (2) being welded to the inner side wall of the fixed angle steel (1), the grouting structure (2) comprising a grouting pipe (21) and a slide groove (22), the grouting pipe (21) being welded to the inner side wall of the fixed angle steel (1), and the slide groove (22) being arranged inside the bottom end of the grouting pipe (21); A guide structure (3), the guide structure (3) being connected to the top end of the grouting pipe (21), the guide structure (3) comprising a joint (31), the joint (31) being connected to the top end of the grouting pipe (21); Steel section (4), the fixed angle steel (1) being welded at the angle of the inner wall of the steel section (4); a valve structure (5), the valve structure (5) being installed inside the bottom end of the grouting pipe (21), the valve structure (5) comprising an outer sleeve (51), a sealing gasket (52), an inner pipe (53) and a through hole (54), the inner pipe (53) being slidably connected to the inside of the bottom end of the grouting pipe (21), the outer sleeve (51) being fixedly connected to the bottom end of the inner pipe (53), the through hole (54) being respectively arranged on the side walls of the outer sleeve (51) and the inner pipe (53), and the sealing gasket (52) being fixed to the inner and outer side walls of the outer sleeve (51); A limiting structure (6), the limiting structure (6) being fixed to the top surface inside the slide groove (22), the limiting structure (6) comprising a second spring (61) and a telescopic rod (62), the top end of the telescopic rod (62) being fixed to the top surface inside the slide groove (22), and the second spring (61) being sleeved on the periphery of the telescopic rod (62).
2. The synchronous grouting device for SMW pile steel recovery according to claim 1, characterized in that: The guiding structure (3) further comprises a catheter (32) and a shunt tube (33); one end of the catheter (32) is connected to the top end of the joint (31), and the shunt tube (33) is connected to the other end of the catheter (32).
3. The synchronous grouting device for SMW pile steel recovery according to claim 2, characterized in that: A group of the flow-dividing pipes (33) are respectively connected to the two conduits (32), and the flow rate of the flow-dividing pipes (33) is equal to the sum of the flow rates of the two conduits (32).
4. The synchronous grouting device for SMW pile steel recovery according to claim 1, characterized in that: Two grouting pipes (21) are provided, and the two grouting pipes (21) are respectively fixed to the inner side wall angles at both ends of the section steel (4) through the fixed angle steel (1), and the two grouting pipes (21) are relatively parallel.
5. The synchronous grouting device for SMW pile steel recovery according to claim 1, characterized in that: The valve structure (5) further comprises a first spring (55), a piston (56), a limit block (57) and a limit groove (58); the limit block (57) is fixed to the inner side wall of the top opening of the inner delivery pipe (53); the piston (56) is blocked by the inner side wall of the limit block (57); the first spring (55) is supported between the bottom end of the piston (56) and the inner bottom surface of the inner delivery pipe (53); and the limit groove (58) is provided between the inner delivery pipe (53) and the outer sleeve (51).
6. The synchronous grouting device for SMW pile steel recovery according to claim 5, characterized in that: The top end of the piston (56) is semicircular, and the piston (56) slides on the inner wall of the inner delivery pipe (53), and the bottom end diameter of the piston (56) is in line with the inner diameter of the inner delivery pipe (53).
7. The synchronous grouting device for SMW pile steel recovery according to claim 5, characterized in that: The outer sleeve (51) slides inside the slide groove (22), and the sealing gasket (52) seals the gap between the outer sleeve (51) and the slide groove (22), and the top end of the outer sleeve (51) is fixedly connected to the bottom end of the second spring (61), and the bottom end of the telescopic rod (62) is fixed to the top surface of the outer sleeve (51), and the outer sleeve (51) and the inner delivery pipe (53) slide between the inner side wall of the slide groove (22) and the side wall of the bottom end of the grouting pipe (21) through the limiting groove (58).