A quick switching connecting device for grouting construction of a steel pipe pile
By installing mounting plates and locking components on steel pipe piles, combined with quick-connect pump pipe joints and grouting pipes, the problem of inconvenient welding of connecting pipes in traditional steel pipe pile grouting construction is solved, thus improving the convenience and efficiency of construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE THIRD CONSTR ENG CO LTD OF CHINA CONSTR SECOND ENG BUREAU
- Filing Date
- 2025-05-21
- Publication Date
- 2026-06-09
AI Technical Summary
In the traditional steel pipe pile grouting construction process, the welding and dismantling of connecting pipes are inconvenient, resulting in low construction efficiency and making it difficult to achieve rapid batch construction.
The design employs an installation plate and locking mechanism, allowing for the connection and sealing of the grouting pipe through a sliding installation plate. Combined with quick-connect pump pipe fittings and grouting pipes, this simplifies the construction process.
It improves construction efficiency, facilitates continuous and rapid operation, enables convenient sealing of grouting ports, and supports rapid construction of batch steel pipe piles.
Smart Images

Figure CN224338222U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction, and in particular to a quick-switching connection device for grouting construction of steel pipe piles. Background Technology
[0002] Grouting construction of steel pipe piles is a technique used to enhance the bearing capacity of pile foundations and improve the properties of foundation soil. By injecting cement grout or other reinforcing materials into the steel pipe piles, the side resistance and end resistance of the piles can be effectively increased, and the settlement of the building can be reduced.
[0003] In the traditional process of grouting steel pipe piles, a connecting pipe is usually welded to the lower end of the steel pipe pile first, and then the concrete pump pipe is fixed to the connecting pipe. After the pouring is completed, the connecting pipe needs to be welded and sealed. Later, the connecting pipe needs to be knocked off, which makes the construction process very inconvenient and is not conducive to the rapid construction of mass steel pipe piles. It needs to be improved. Utility Model Content
[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a quick-switching connection device for steel pipe pile grouting construction, which improves construction efficiency and convenience.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a quick-switching connection device for steel pipe pile grouting construction, comprising:
[0006] The mounting plate is arc-shaped and fastened to the outer wall of the steel pipe pile;
[0007] The grouting pipe is horizontally installed at one end of the mounting plate and is used to connect to the grouting port at the lower end of the steel pipe pile.
[0008] A pump pipe joint is fixed to the concrete pump pipe and is used to connect the grouting pipe;
[0009] Screws are provided at one end of the mounting plate away from the grouting pipe and are distributed vertically, and are used to fix the steel pipe pile. The mounting plate has horizontally provided strip holes for the screws to pass through.
[0010] A locking element is fixed to the steel pipe pile and is used to fix the mounting plate.
[0011] In a preferred embodiment, the present invention can be further configured such that the locking element includes a pin and a pressure block, the pin being fixed to the steel pipe pile, and the pressure block being used to press against the outer wall of the mounting plate.
[0012] In a preferred embodiment, the present invention can be further configured such that: the pressure block is provided with a hook, and the mounting plate is provided with a slot for the hook to be inserted.
[0013] In a preferred embodiment, the present invention can be further configured such that: a dovetail block is provided on the pump pipe joint, and a groove for the dovetail block to be embedded in and a dovetail groove connecting the groove and for the dovetail block to be slidably embedded in are provided on the grouting pipe.
[0014] In a preferred embodiment, the present invention can be further configured as follows: a locking rod is rotatably connected to the grouting pipe, a locking block is provided on the pump pipe joint, a locking hole is provided on the locking rod for the locking block to be inserted, and a locking pin for inserting the locking block is threadedly connected to the end of the locking rod.
[0015] In a preferred embodiment, the present invention can be further configured such that: a sealing ring is provided on the pump pipe joint located inside the dovetail block, and a sealing groove is provided on the grouting pipe for the sealing ring to be embedded in.
[0016] In a preferred embodiment, the present invention can be further configured such that a striking plate is provided at the end of the mounting plate opposite to the grouting pipe.
[0017] In summary, this utility model has the following beneficial effects:
[0018] 1. By setting an installation plate that slides on the steel pipe pile and installing a grouting pipe on the installation plate, the sliding of the installation plate can connect the grouting pipe to the grouting port on the steel pipe pile and also seal the grouting port, making the construction process more convenient, improving construction efficiency, and facilitating the rapid construction of batch steel pipe piles.
[0019] 2. By setting up quick-connect pump pipe joints and grouting pipes, the concrete grouting process becomes easier and more convenient, facilitating continuous and rapid operation. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the construction status of an embodiment;
[0021] Figure 2 This is a structural schematic diagram of an embodiment;
[0022] Figure 3 This is a schematic diagram of the locking component in an embodiment;
[0023] Figure 4 This is a schematic diagram of the grouting pipe in the embodiment;
[0024] Figure 5 This is a schematic diagram of the pump pipe connector in an embodiment.
[0025] Reference numerals: 1. Mounting plate; 11. Striking plate; 12. Strip hole; 13. Slot; 2. Grouting pipe; 21. Groove; 22. Dovetail groove; 23. Sealing groove; 24. Locking rod; 25. Locking hole; 26. Locking pin; 3. Pump pipe connector; 31. Dovetail block; 32. Sealing ring; 33. Locking block; 4. Screw; 5. Locking element; 51. Pin; 52. Pressure block; 53. Hook. Detailed Implementation
[0026] The present invention will be further described in detail below with reference to the accompanying drawings.
[0027] like Figure 1 , Figure 2 , Figure 3 As shown, a quick-switching connection device for grouting construction of steel pipe piles includes an installation plate 1, a grouting pipe 2, a pump pipe connector 3, screws 4, and a locking component 5.
[0028] like Figure 1 , Figure 2 , Figure 3 As shown, the mounting plate 1 is arc-shaped and fastened to the outer wall of the steel pipe pile, and a striking plate 11 is provided at one end of the mounting plate 1. The grouting pipe 2 is horizontally arranged at the end of the mounting plate 1 away from the striking plate, and is used to connect to the grouting port at the lower end of the steel pipe pile.
[0029] like Figure 1 , Figure 2 , Figure 3 As shown, the pump pipe connector 3 is fixed to the concrete pump pipe and is used to connect the grouting pipe 2. The screws 4 are set on the end of the mounting plate 1 away from the grouting pipe 2 and are distributed vertically, and are used to fix it to the steel pipe pile. The mounting plate 1 has horizontally provided strip holes 12 for the screws 4 to pass through.
[0030] like Figure 2 , Figure 3 As shown, the locking element 5 is fixed to the steel pipe pile and is used to fix the mounting plate 1. The locking element 5 includes a pin 51 and a pressure block 52. The pin 51 is fixed to the steel pipe pile, and the pressure block 52 is used to press the outer wall of the mounting plate 1. The pressure block 52 is provided with a hook 53, and the mounting plate 1 is provided with a slot 13 for the hook 53 to be inserted.
[0031] When grouting is required on the steel pipe pile, first fasten the mounting plate 1 onto the outer wall of the steel pipe pile and align the grouting pipe 2 with the grouting port on the steel pipe pile. Then, insert the screw 4 through the inside of the strip hole 12 and fix it to the steel pipe pile. Subsequently, fix the pin 51 to the steel pipe pile and position the pressure block 52 facing the mounting plate 1.
[0032] The pipe joint is then connected and fixed to the grouting pipe 2, and grout is injected into the steel pipe pile. After grouting is completed, the hammer is used to strike the striking plate 11, causing the mounting plate 1 to slide horizontally under the limiting action of the screw 4, and sealing the grouting port on the steel pipe pile.
[0033] Simultaneously, the mounting plate 1 is embedded below the pressure block 52, and the hook 53 on the pressure block 52 hooks tightly onto the slot 13 on the mounting plate 1, thus fixing the mounting plate 1 and stably sealing the grouting port. Finally, the pump pipe joint 3 can be removed to allow for the grouting operation of the next steel pipe pile.
[0034] Therefore, by setting an installation plate 1 that slides on the steel pipe pile and setting a grouting pipe 2 on the installation plate 1, the sliding of the installation plate 1 can enable the grouting pipe 2 to connect to the grouting port on the steel pipe pile and also achieve the sealing of the grouting port, making the construction process more convenient, improving construction efficiency, and facilitating the rapid construction of batch steel pipe piles.
[0035] like Figure 4 , Figure 5 As shown, the pump pipe connector 3 is provided with a dovetail block 31, and the grouting pipe 2 is provided with a groove 21 for the dovetail block 31 to be inserted into and a dovetail groove 22 connecting the groove 21 and allowing the dovetail block 31 to slide into it. The pump pipe connector 3 is provided with a sealing ring 32 located inside the dovetail block 31, and the grouting pipe 2 is provided with a sealing groove 23 for the sealing ring 32 to be inserted into.
[0036] like Figure 4 , Figure 5 As shown, a locking rod 24 is rotatably connected to the grouting pipe 2, a locking block 33 is provided on the pump pipe joint 3, a locking hole 25 is provided on the locking rod 24 for the locking block 33 to be inserted, and a locking pin 26 for inserting the locking block 33 is threadedly connected to the end of the locking rod 24.
[0037] When it is necessary to connect the pump pipe connector 3 to the grouting pipe 2, the dovetail block 31 on the pump pipe connector 3 is embedded into the groove 21 on the grouting pipe 2, and then the pump pipe connector 3 is rotated so that the dovetail block 31 is embedded into the dovetail groove 22, thereby realizing the connection between the pump pipe connector 3 and the grouting pipe 2.
[0038] Subsequently, the locking lever 24 is flipped, causing the locking block 33 to embed into the locking hole 25 on the locking lever 24. Then, the locking pin 26 is rotated to insert the locking pin 26 into the locking block 33, achieving a stable connection between the pump pipe joint 3 and the grouting pipe 2 and preventing the pump pipe joint 3 from falling off. Furthermore, after connection, the sealing ring 32 and the sealing groove 23 work together to increase the sealing between the two, preventing grout leakage.
[0039] The specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.
Claims
1. A quick-switching connection device for grouting construction of steel pipe piles, characterized in that: include: The mounting plate (1) is arc-shaped and fastened to the outer wall of the steel pipe pile; The grouting pipe (2) is horizontally positioned at one end of the mounting plate (1) and is used to connect to the grouting port at the lower end of the steel pipe pile. Pump pipe connector (3) is fixed to the concrete pump pipe and is used to connect the grouting pipe (2); Screws (4) are provided on one end of the mounting plate (1) away from the grouting pipe (2) and are distributed vertically, and are used to fix the steel pipe pile. The mounting plate (1) has a horizontal strip hole (12) for the screws (4) to pass through. The locking element (5) is fixed to the steel pipe pile and is used to fix the mounting plate (1).
2. The quick switching connecting device for grouting construction of a steel pipe pile according to claim 1, characterized in that: The locking component (5) includes a pin (51) and a pressure block (52). The pin (51) is fixed to the steel pipe pile, and the pressure block (52) is used to press the outer wall of the mounting plate (1).
3. The quick switching connecting device for grouting construction of a steel pipe pile according to claim 2, characterized in that: The pressure block (52) is provided with a hook (53), and the mounting plate (1) is provided with a slot (13) for the hook (53) to be inserted.
4. The quick switching connecting device for grouting construction of a steel pipe pile according to claim 1, characterized in that: The pump pipe joint (3) is provided with a dovetail block (31), and the grouting pipe (2) is provided with a groove (21) for the dovetail block (31) to be embedded in and a dovetail groove (22) connecting the groove (21) and for the dovetail block (31) to slide into it.
5. The quick switching connecting device for grouting construction of a steel pipe pile according to claim 4, characterized in that: A locking rod (24) is rotatably connected to the grouting pipe (2), a locking block (33) is provided on the pump pipe joint (3), a locking hole (25) is provided on the locking rod (24) for the locking block (33) to be inserted, and a locking pin (26) for inserting the locking block (33) is threadedly connected to the end of the locking rod (24).
6. The quick switching connecting device for grouting construction of a steel pipe pile according to claim 5, characterized in that: The pump pipe joint (3) is provided with a sealing ring (32) located inside the dovetail block (31), and the grouting pipe (2) is provided with a sealing groove (23) for the sealing ring (32) to be embedded.
7. The quick switching connecting device for grouting construction of a steel pipe pile according to claim 1, characterized in that: A striking plate (11) is provided at one end of the mounting plate (1) away from the grouting pipe (2).