Composite grouting device based on post-grouting process and assembling device of composite grouting device

Abstract

The invention discloses a composite grouting device based on a post-grouting process and an assembling device thereof, and relates to the technical field of engineering construction equipment, the composite grouting device comprises a pair of vertical grouting pipes and an annular grouting pipe arranged between the pair of vertical grouting pipes; the pair of vertical grouting pipes and the annular grouting pipe are connected through a four-way connecting piece; and a reducing mechanism is arranged between the four-way connecting piece and the annular grouting pipe. Through combined use of the vertical grouting pipes and the annular grouting pipes, the distribution uniformity of slurry in the pile in the grouting process can be remarkably improved, and therefore the overall quality of the pile is improved; a Venturi tube structure formed by the mounting ring, the connecting ring and the spring piece is specially used for covering a connector area between the annular grouting pipe and the four-way connecting piece; slurry can be effectively prevented from directly impacting the connector, and the risk of connector loosening is reduced; meanwhile, the venturi tube structure enables the diameter of an outlet to be gradually increased when slurry flows through the venturi tube structure, so that the flow speed is slowed down, and the impact force on the annular grouting tube is further reduced.

Description

Technical Field

[0001] The invention relates to the technical field of engineering construction equipment, and in particular to a composite grouting device based on a post-grouting process and an assembly device thereof. Background Art

[0002] A grouting machine is a special device used to inject cement slurry or chemical slurry into the ground, concrete cracks or pipeline leaks.

[0003] In the prior art, when performing pile casting operations, construction teams usually adopt two main grouting pipe arrangements: vertical grouting pipes and circular grouting pipes; vertical grouting pipes refer to pipe systems installed vertically along the center line of the pile body or close to the center; and circular grouting pipes refer to one or more circles of horizontal pipes arranged around the pile.

[0004] However, the pouring pipe structure of the above grouting device still has the following defects during use:

[0005] For pile structures with larger diameters, relying solely on vertical grouting pipes or annular grouting pipes may not ensure uniform distribution of the slurry during the pouring process, which may have an adverse effect on the quality of the final pile; this is because, under conditions of larger diameters, a single type of grouting method is difficult to cover the entire cross-section, which can easily lead to insufficient or excessive filling in certain areas, thereby forming voids, cracks and other problems, affecting the quality of the pile. Summary of the invention

[0006] In order to overcome the above technical problems, the purpose of the present invention is to provide a composite grouting device and an assembly device thereof based on a post-grouting process, so as to solve the problem that the grouting pipe structure of the existing grouting device mentioned in the above background technology cannot ensure the uniform distribution of the slurry during the pouring process.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] The composite grouting device based on the post-grouting process comprises a pair of vertical grouting pipes and an annular grouting pipe arranged between the pair of vertical grouting pipes; the pair of vertical grouting pipes and the annular grouting pipe are connected by a four-way connector; a diameter-changing mechanism is arranged between the four-way connector and the annular grouting pipe; the diameter-changing mechanism comprises:

[0009] A mounting ring, the mounting ring being inserted into a connection port of the cross-connector;

[0010] A connecting ring, which is inserted into the connecting port of the annular grouting pipe;

[0011] A plurality of spring sheets, wherein the plurality of spring sheets are arranged between the mounting ring and the connecting ring;

[0012] And a connecting rod, one end of which is fixed on the mounting ring, and the other end of which is fixed on the connecting port of the annular grouting pipe.

[0013] Preferably, the diameter-changing mechanism also includes a plurality of first clamping blocks; the plurality of first clamping blocks are arranged on the mounting ring, and a first clamping groove adapted to the first clamping block is opened in the four-way connector; when the connecting port of the connecting hose is plugged into the four-way connector, the first clamping block is clamped in the first clamping groove.

[0014] Preferably, the diameter-changing mechanism further comprises an elastic cloth; the elastic cloth is arranged between adjacent spring sheets.

[0015] Preferably, the spring sheet is an arc-shaped structure, and the mounting ring, spring sheet, elastic cloth and connecting ring form a venturi tube structure; when the internal pressure of the venturi tube structure increases, the spring sheet can be pushed to deform to change the minimum inner diameter of the venturi tube structure.

[0016] Preferably, the vertical grouting pipe comprises a connecting section and a grouting section with grouting holes; the connecting section is connected to the top of the four-way connector, and the grouting section is connected to the bottom of the four-way connector.

[0017] Preferably, the annular grouting pipe includes two semicircular connecting hoses with connecting heads; the two connecting hoses are connected to a four-way connecting piece via the connecting heads, and the two connecting hoses and the four-way connecting piece form a circular structure.

[0018] Preferably, the connector is provided with a second clamping block, and the cross-connector is provided with a second clamping slot adapted to the second clamping block; when the connector is connected to the cross-connector, the second clamping block is clamped in the second clamping slot.

[0019] An assembly device for a composite grouting device based on a post-grouting process comprises an assembly seat and an assembly mechanism arranged on the assembly seat; the assembly mechanism drives an annular grouting pipe to assemble and splice with a four-way connector; a pair of limit grooves adapted to the four-way connector are provided on the assembly seat.

[0020] Preferably, the assembly mechanism includes a driving mechanism and a pair of first rotating rods; the pair of first rotating rods are rotatably connected to the assembly seat at the midpoint position through a pin shaft; clamping blocks are provided at both ends of each of the first rotating rods, and a clamping groove matched with the clamping block is provided on the connecting head; the driving mechanism is installed on the assembly seat, and when the connecting head is clamped to the clamping block through the clamping groove, the driving mechanism is used to drive the first rotating rods to rotate, so as to drive the connecting head to be plugged into the four-way connector.

[0021] Preferably, the driving mechanism includes a cylinder, a mounting block and a pair of second rotating rods; the cylinder is installed on an assembly seat, the mounting block is installed on the output end of the cylinder, one end of a pair of second rotating rods is respectively hinged to both sides of the mounting block, and the other end of a pair of second rotating rods is respectively hinged to a pair of first rotating rods; when the cylinder drives the mounting block to move, the pair of first rotating rods are driven to rotate along the pin shaft position through the second rotating rod.

[0022] Beneficial effects of the present invention:

[0023] 1. By using a combination of a vertical grouting pipe and an annular grouting pipe, the uniformity of the grout distribution in the pile column during the grouting process can be significantly improved, thereby improving the overall quality of the pile column;

[0024] 2. The Venturi tube structure constructed by the mounting ring, the connecting ring and the spring sheet is specially used to cover the interface area between the annular grouting pipe and the four-way connector; it can effectively prevent the slurry from directly impacting the interface and reduce the risk of the interface loosening; at the same time, the Venturi tube structure makes the outlet diameter gradually increase when the slurry flows through, thereby slowing down the flow rate and further reducing the impact force on the annular grouting pipe; this not only protects the annular grouting pipe from damage, but also ensures the safety and stability of the entire grouting process;

[0025] 3. By setting up a variable diameter mechanism, the synergistic effect of the spring sheet and the elastic cloth effectively solves the problem of blockage that may occur at the interface of the annular grouting pipe; when blockage occurs, the spring sheet can be deformed to increase the minimum aperture for the slurry to pass through, thereby improving the circulation efficiency;

[0026] 4. By setting up an assembly device, the assembly between the annular grouting pipe and the four-way connector can be completed quickly and accurately to ensure that the formed structure is a standard circle, thereby optimizing the uniform distribution of the slurry during the grouting process and improving the construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] Figure 1 It is a schematic diagram of the overall three-dimensional structure of a composite grouting device based on the post-grouting process;

[0029] Figure 2 It is a schematic diagram of a partially cutaway three-dimensional structure of a composite grouting device based on a post-grouting process;

[0030] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure of the middle A area;

[0031] Figure 4 It is a three-dimensional enlarged structural schematic diagram of the diameter-changing mechanism of the present invention;

[0032] Figure 5 It is a three-dimensional enlarged structural schematic diagram of the connecting hose of the present invention;

[0033] Figure 6 It is a partially cutaway three-dimensional enlarged structural schematic diagram of a four-way connector of the present invention;

[0034] Figure 7 It is a three-dimensional structural schematic diagram of an assembly device of a composite grouting device based on a post-grouting process;

[0035] Figure 8 It is a schematic diagram of the three-dimensional structure of the assembly device of the composite grouting device based on the post-grouting process after removing one of the four-way connectors;

[0036] Fig. 9 It is a three-dimensional enlarged structural schematic diagram of the driving mechanism of the present invention.

[0037] In the figure: 1. vertical grouting pipe; 11. connecting section; 12. grouting section; 13. grouting hole; 2. annular grouting pipe; 21. connecting hose; 22. connecting head; 23. second clamping block; 24. second clamping groove; 3. four-way connector; 4. reducing mechanism; 41. mounting ring; 42. connecting ring; 43. spring sheet; 44. elastic cloth; 45. first clamping block; 46. first clamping groove; 47. connecting rod; 5. assembly seat; 6. limiting groove; 7. assembly mechanism; 71. first rotating rod; 72. clamping block; 73. clamping groove; 74. driving mechanism; 741. cylinder; 742. mounting block; 743. second rotating rod. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] like Figure 1-6 As shown, the composite grouting device based on the post-grouting process, such as Figure 1-4As shown, it includes a pair of vertical grouting pipes 1 and an annular grouting pipe 2 arranged between the pair of vertical grouting pipes 1; the pair of vertical grouting pipes 1 and the annular grouting pipe 2 are connected by a four-way connector 3; a diameter-changing mechanism 4 is arranged between the four-way connector 3 and the annular grouting pipe 2; the diameter-changing mechanism 4 includes: a mounting ring 41, the mounting ring 41 is inserted into the connection port of the four-way connector 3; a connecting ring 42, the connecting ring 42 is inserted into the connection port of the annular grouting pipe 2; a plurality of spring sheets 43, the plurality of spring sheets 43 are arranged between the mounting ring 41 and the connecting ring 42; and a connecting rod 47, one end of the connecting rod 47 is fixedly arranged on the mounting ring 41, and the other end of the connecting rod 47 is fixedly arranged at the connecting port position of the annular grouting pipe 2; the diameter-changing mechanism 4 also includes an elastic cloth 44; the elastic cloth 44 is arranged between adjacent spring sheets 43; the spring sheet 43 is an arc-shaped structure, and the mounting ring 41, the spring sheet 43, the elastic cloth 44 and the connecting ring 42 form a venturi tube structure; when the internal pressure of the venturi tube structure increases, the spring sheet 43 can be pushed to deform to change the minimum inner diameter of the venturi tube structure.

[0040] By using the vertical grouting pipe 1 and the annular grouting pipe 2 in combination, the uniformity of the distribution of the slurry in the pile column during the grouting process can be significantly improved, thereby improving the overall quality of the pile column.

[0041] Since the annular grouting pipe 2 adopts a flexible hose design, it is easily affected by the impact of slurry during grouting, especially at the interface position, which may cause the annular grouting pipe 2 to fall off from the four-way connector 3; therefore, a venturi tube structure is constructed by arranging a mounting ring 41, a connecting ring 42 and a spring sheet 43, and the structure is specially designed to cover the interface area between the annular grouting pipe 2 and the four-way connector 3, effectively blocking the slurry from directly impacting the interface, thereby reducing the risk of the interface loosening due to impact; and the design of the venturi tube structure is such that when the slurry flows through this structure and enters the annular grouting pipe 2, its outlet diameter gradually increases, thereby slowing down the flow rate of the slurry; such a design not only further reduces the impact force of the slurry on the annular grouting pipe 2, but also more effectively protects the annular grouting pipe 2, ensuring the safety and stability of the entire grouting process;

[0042] In addition, through the synergistic effect of the spring sheet 43 and the elastic cloth 44, the blockage problem that may occur at the interface of the annular grouting pipe 2 can be effectively dealt with. When encountering a blockage, the spring sheet 43 can be deformed by force, thereby increasing the minimum aperture through which the slurry passes and improving the circulation efficiency of the slurry; this design also allows the variable diameter mechanism 4 to adjust the aperture size through which the slurry passes accordingly when the slurry output speed of the grouting machine changes, so as to adapt to different flow rate requirements, ensure that the slurry always passes at an appropriate speed, and maintain the smooth progress of the grouting process; this not only improves the system's adaptability to different working conditions, but also further guarantees the construction quality and efficiency.

[0043] like Figure 3-4 and Figure 6 As shown, the reducing mechanism 4 also includes a plurality of first clamping blocks 45; the plurality of first clamping blocks 45 are arranged on the mounting ring 41, and a first clamping groove 46 adapted to the first clamping block 45 is opened in the four-way connector 3; when the connecting port of the connecting hose 21 is plugged into the four-way connector 3, the first clamping block 45 is clamped in the first clamping groove 46; it should be noted that, through the coordinated use of the first clamping block 45 and the first clamping groove 46, the reducing mechanism 4 and the four-way connector 3 can be quickly clamped and aligned, which ensures the connection stability while facilitating the improvement of the convenience of its assembly.

[0044] like Figure 1-2 and Figure 6 As shown, the vertical grouting pipe 1 includes a connecting section 11 and a grouting section 12 with a grouting hole 13; the connecting section 11 is connected to the top of the four-way connector 3, and the grouting section 12 is connected to the bottom of the four-way connector 3; in order to achieve more flexible grouting control, a grouting valve is provided on the annular grouting pipe 2. Similarly, a similar valve function is also configured at the grouting hole 13 of the grouting section 12. Specifically, this valve structure can be constructed by a simple method: insert a thumbtack into the grouting hole 13 and fix it with tape; the simple grouting valve formed in this way can directly flush the thumbtack and tape through high-pressure slurry when the grouting machine starts working, so as not to affect the normal grouting process; it is worth noting that even if the thumbtack and tape are flushed into the interior of the pile, they will not have an adverse effect on the final molding quality of the pile, because these small objects will be safely sealed in the concrete; this method is both simple and practical, and provides great convenience for on-site construction.

[0045] like Figure 1-2 As shown, the annular grouting pipe 2 includes two semicircular connecting hoses 21 with connecting heads 22; the two connecting hoses 21 are connected to the four-way connecting piece 3 through the connecting heads 22, and the two connecting hoses 21 and the four-way connecting piece 3 form a circular structure; a second clamping block 23 is provided on the connecting head 22, and a second clamping groove 24 adapted to the second clamping block 23 is provided in the four-way connecting piece 3; when the connecting head 22 is connected to the four-way connecting piece 3, the second clamping block 23 is clamped in the second clamping groove 24. It should be noted that, through the coordinated use of the second clamping block 23 and the second clamping groove 24, a stable connection can be ensured between the four-way connecting piece 3 and the connecting hose 21, thereby further enhancing the stability of the connection between the annular grouting pipe 2 and the four-way connecting piece 3; in addition, the connecting hose 21 and the four-way connecting piece 3 together form a standard circular structure, which helps to evenly distribute the slurry during the grouting process, thereby improving the uniformity of the slurry distribution during the entire grouting process. This design not only strengthens the connection strength between components, but also optimizes the slurry flow pattern, which is of great significance for improving the quality of piles.

[0046] like Figure 1-9 As shown, the assembly device of the composite grouting device based on the post-grouting process includes an assembly seat 5 and an assembly mechanism 7 arranged on the assembly seat 5; the assembly mechanism 7 drives the annular grouting pipe 2 and the four-way connector 3 to assemble and splice; a pair of limit grooves 6 adapted to the four-way connector 3 are opened on the assembly seat 5.

[0047] The installation of the existing grouting pipe usually relies on manual operation, but the present application requires that the connecting hose 21 and the four-way connector 3 be accurately assembled to form a standard circular structure, and it is difficult to achieve this precision requirement by manual assembly; therefore, a special assembly device is provided to realize automatic assembly between the connecting hose 21 and the four-way connector 3, which not only improves the convenience of assembly, but also greatly improves the work efficiency;

[0048] The specific assembly process is as follows: first, insert the two four-way connectors 3 into the limit grooves 6 to ensure that their positions are accurate; then, use the assembly mechanism 7 to drive the interface of the connecting hose 21 to move until it is accurately inserted into the four-way connector 3; in this way, the assembly between the annular grouting pipe 2 and the four-way connector 3 can be completed quickly and accurately to ensure that the formed structure is a standard circle, thereby optimizing the uniform distribution of the slurry during the grouting process and improving the construction quality.

[0049] like Figure 7-8 As shown, the assembly mechanism 7 includes a driving mechanism 74 and a pair of first rotating rods 71; the pair of first rotating rods 71 ​​are rotatably connected to the assembly seat 5 at the midpoint position through a pin shaft; it can be understood that the pin shaft is a prior art and is not described in detail; both ends of each first rotating rod 71 are provided with a clamping block 72, and the connecting head 22 is provided with a clamping groove 73 adapted to the clamping block 72; the driving mechanism 74 is installed on the assembly seat 5, and when the connecting head 22 is clamped to the clamping block 72 through the clamping groove 73, the driving mechanism 74 is used to drive the first rotating rod 71 to rotate, so as to drive the connecting head 22 to be plugged into the four-way connector 3.

[0050] It should be noted that, first, the connectors 22 at both ends of the connecting hose 21 are clamped with the clamping blocks 72 through the clamping grooves 73. At this time, there is a distance between the connector 22 and the four-way connector 3, and the four-way connector 3 and the connector 22 are on the same circle; then the driving mechanism 74 pushes the connector 22 to move along the circle until the connector 22 is plugged into the four-way connector 3. During this process, the first clamping block 45 will be driven to be plugged into the first clamping groove 46, and then the second clamping block 23 will be driven to be plugged into the second clamping groove 24, so as to achieve a stable connection between the connector 22 and the four-way connector 3.

[0051] like Figure 7-9As shown, it can be understood that the present application does not limit the specific structure and installation method of the driving mechanism 74, and only a feasible technical solution is provided below; the driving mechanism 74 includes a cylinder 741, a mounting block 742 and a pair of second rotating rods 743; the cylinder 741 is installed on the assembly seat 5, the mounting block 742 is installed on the output end of the cylinder 741, one end of the pair of second rotating rods 743 is respectively hinged to the two sides of the mounting block 742, and the other ends of the pair of second rotating rods 743 are respectively hinged to the pair of first rotating rods 71; when the cylinder 741 drives the mounting block 742 to move, the second rotating rod 743 drives the pair of first rotating rods 71 ​​to rotate along the pin position.

[0052] It should be noted that the cylinder 741 pushes the mounting block 742 to move, the mounting block 742 drives the second rotating rod 743 to move, and the second rotating rod 743 pushes a pair of first rotating rods 71 ​​to rotate along the pin shaft at the same time, thereby driving the connecting head 22 on the clamping block 72 to approach the four-way connector 3 until the connecting head 22 is plugged into the four-way connector 3, thereby achieving the purpose of driving the annular grouting pipe 2 and the four-way connector 3 for rapid assembly.

[0053] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0054] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A composite grouting device based on a post-grouting process, comprising a pair of vertical grouting pipes (1) and an annular grouting pipe (2); characterized in that: A pair of the vertical grouting pipes (1) and the annular grouting pipe (2) are connected via two four-way connectors (3); a diameter-changing mechanism (4) is provided between the four-way connector (3) and the annular grouting pipe (2); the diameter-changing mechanism (4) comprises: A mounting ring (41), wherein the mounting ring (41) is inserted into a connection port of the four-way connector (3); A connecting ring (42), wherein the connecting ring (42) is inserted into a connecting port of the annular grouting pipe (2); A plurality of spring sheets (43), wherein the plurality of spring sheets (43) are arranged between the mounting ring (41) and the connecting ring (42); and a connecting rod (47), one end of which is fixedly arranged on the mounting ring (41), and the other end of which is fixedly arranged at the connection port of the annular grouting pipe (2).

2. The composite grouting device based on the post-grouting process according to claim 1 is characterized in that: The diameter-changing mechanism (4) further comprises a plurality of first clamping blocks (45); the plurality of first clamping blocks (45) are arranged on the mounting ring (41), and a first clamping groove (46) adapted to the first clamping block (45) is provided in the four-way connecting piece (3); when the connecting port of the connecting hose (21) is plugged into the four-way connecting piece (3), the first clamping block (45) is clamped in the first clamping groove (46).

3. The composite grouting device based on the post-grouting process according to claim 1 is characterized in that: The diameter-changing mechanism (4) further comprises an elastic cloth (44); the elastic cloth (44) is arranged between adjacent spring sheets (43).

4. The composite grouting device based on the post-grouting process according to claim 3 is characterized in that: The spring sheet (43) is an arc-shaped structure, and the mounting ring (41), the spring sheet (43), the elastic cloth (44) and the connecting ring (42) form a venturi tube structure; when the internal pressure of the venturi tube structure increases, the spring sheet (43) can be pushed to deform, so as to change the minimum inner diameter of the venturi tube structure.

5. The composite grouting device based on the post-grouting process according to claim 1 is characterized in that: The vertical grouting pipe (1) comprises a connecting section (11) and a grouting section (12) with a grouting hole (13); the connecting section (11) is connected to the top of a four-way connector (3), and the grouting section (12) is connected to the bottom of the four-way connector (3).

6. The composite grouting device based on the post-grouting process according to claim 1 is characterized in that: The annular grouting pipe (2) comprises two semicircular connecting hoses (21) with connecting heads (22); the two connecting hoses (21) are connected to a four-way connecting piece (3) via the connecting heads (22), and the two connecting hoses (21) and the four-way connecting piece (3) form a circular structure.

7. The composite grouting device based on the post-grouting process according to claim 6 is characterized in that: The connector (22) is provided with a second clamping block (23), and the four-way connector (3) is provided with a second clamping groove (24) adapted to the second clamping block (23); when the connector (22) is connected to the four-way connector (3), the second clamping block (23) is clamped in the second clamping groove (24).

8. The assembly device of the composite grouting device based on the post-grouting process according to any one of claims 1 to 7, characterized in that: The invention comprises an assembly seat (5) and an assembly mechanism (7) arranged on the assembly seat (5); the assembly mechanism (7) drives the annular grouting pipe (2) and the four-way connecting piece (3) to be assembled and spliced; the assembly seat (5) is provided with a pair of limit grooves (6) adapted to the four-way connecting piece (3).

9. The assembly device of the composite grouting device based on the post-grouting process according to claim 8, characterized in that: The assembly mechanism (7) comprises a driving mechanism (74) and a pair of first rotating rods (71); the pair of first rotating rods (71) are rotatably connected to the assembly seat (5) at the midpoint position via a pin shaft; a clamping block (72) is provided at both ends of each first rotating rod (71), and a clamping groove (73) matched with the clamping block (72) is provided on the connector (22); the driving mechanism (74) is installed on the assembly seat (5), and when the connector (22) is clamped to the clamping block (72) via the clamping groove (73), the driving mechanism (74) is used to drive the first rotating rod (71) to rotate, so as to drive the connector (22) to be plugged into the four-way connector (3).

10. The assembly device of the composite grouting device based on the post-grouting process according to claim 9, characterized in that: The driving mechanism (74) comprises a cylinder (741), a mounting block (742) and a pair of second rotating rods (743); the cylinder (741) is mounted on the assembly seat (5), the mounting block (742) is mounted on the output end of the cylinder (741), one end of the pair of second rotating rods (743) is respectively hinged to the two sides of the mounting block (742), and the other end of the pair of second rotating rods (743) is respectively hinged to the pair of first rotating rods (71); when the cylinder (741) drives the mounting block (742) to move, the second rotating rods (743) drive the pair of first rotating rods (71) to rotate along the pin position.

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