Quick connecting structure suitable for circulating grouting of prestressed duct

Abstract

The utility model provides a quick connecting structure suitable for circulating grouting of a prestressed duct, which comprises a high-pressure pipe, a pre-embedded steel pipe arranged at a grouting port and a quick connecting device arranged at an inlet of the high-pressure pipe and the pre-embedded steel pipe, and the quick connecting device can be sleeved and fixed with a pipe body on one side or two sides of the quick connecting device. According to the quick connecting device, the quick connecting structure can be sleeved and fixed on the pipe body of the high-pressure pipe and / or the pre-embedded steel pipe, and is quickly connected with the high-pressure pipe and / or the pre-embedded steel pipe, so that the quick connecting device is efficient, convenient and stable in connecting quality, and the connecting quality is only reduced along with the abrasion of the quick connecting device and is basically not influenced by human factors; the working efficiency is improved, the labor intensity of workers is reduced, the whole prestressed duct grouting process is smoother, the connection of the whole grouting opening and the grouting high-pressure pipe is more efficient and convenient, the connection quality is stable, and the situation of grout leakage is not prone to occurring.

Description

Technical Field

[0001] This application relates to the technical field of bridge duct grouting, specifically to a rapid connection structure suitable for cyclic grouting of prestressed ducts. Background Technology

[0002] Currently, grouting technology for prestressed ducts includes conventional grouting and vacuum grouting. Both of these processes have shortcomings in practical applications. With the improvement of grouting technology and the continuous upgrading of grouting equipment, prestressed structures have been widely used in various fields of civil engineering. Therefore, a circulating grouting technology for prestressed ducts has emerged. This technology stops grouting after the grout concentration at the inlet and outlet of the prestressed tensioning duct meets the specifications. A pressure-resistant plastic pipe is installed at the outlet, with the other end connected to a mud tank, forming a closed-loop circulation system. Grouting is then repeated, and the air bubbles in the duct are carried out through grout circulation, thereby increasing the fullness of the grout. This technical solution is disclosed in patent publication number CN109811655A, entitled "A Circulating Grouting Process for Prestressed Tensioning Ducts." This technology optimizes and improves aspects such as protecting the durability of bridge structures, the synergy between prestressed tendons and concrete, and simplifying construction procedures, effectively improving the service life and safety performance of prestressed bridges.

[0003] like Figure 1 As shown, it is a prestressed double-hole circulating grouting process, which includes a bidirectional circulation channel 10, a grouting port 20, a grouting outlet 30, a grouting machine 40, a grouting machine 50, and a grouting tank 60. The grouting machine 50 is connected to the grouting port 20 through a high-pressure pipe.

[0004] The traditional method of connecting high-pressure pipes to prestressed duct grouting ports involves binding the high-pressure pipes to the pre-embedded steel pipes at the grouting ports with cable ties. However, this method is limited by manual binding, making it difficult to accurately control the tightness of the ties. The connection quality is greatly affected by human factors, which can easily lead to grout leakage. Furthermore, the binding and removal efficiency is low, requiring repeated binding and removal every time the grouting port is replaced.

[0005] To address the above problems, this utility model provides a new technical solution. Utility Model Content

[0006] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a rapid connection structure suitable for prestressed duct circulatory grouting, which solves the problems of difficult high-pressure pipe connection and low connection efficiency during prestressed duct grouting. The technical solution adopted includes:

[0007] A quick connection structure suitable for circulating grouting of prestressed ducts includes a high-pressure pipe, a pre-embedded steel pipe set at the grouting port, and a quick connection device set at the inlet of the high-pressure pipe and the pre-embedded steel pipe. The quick connection device can be sleeved and fixed with the pipe body on one or both sides.

[0008] According to an embodiment of the present invention, a quick connection structure suitable for circulating grouting of prestressed ducts is provided. The quick connection device includes a snap-fit ​​quick connector, which is snapped and fixed after connection.

[0009] According to an embodiment of the present invention, a quick connection structure suitable for circulating grouting of prestressed ducts is provided with a valve at the inlet of the pre-embedded steel pipe. The valve includes an inlet end, an outlet end, and a switch valve. The outlet end of the valve is connected to the inlet of the pre-embedded steel pipe.

[0010] According to an embodiment of the present invention, a quick connection structure suitable for circulating grouting of prestressed ducts is provided, wherein the snap-fit ​​quick connector is sleeved onto the inlet end of the valve and connected to the valve, and is snapped and fixed after being sleeved.

[0011] According to an embodiment of the present invention, a quick connection structure suitable for circulating grouting of prestressed ducts is provided. The snap-fit ​​quick connector includes an inner sleeve and an outer sleeve. The inner sleeve is fitted inside the inlet end of the valve, and the outer sleeve is fitted outside the inlet end of the valve. A snap-fit ​​structure is provided on the outer side wall of the outer sleeve.

[0012] According to an embodiment of the present invention, a quick connection structure suitable for circulating grouting of prestressed ducts is provided. The quick connection device further includes a rear connecting pipe, the rear end of which is fixedly connected to the high-pressure pipe by a pipe thread, and the front end of which is connected to the inner sleeve of a snap-fit ​​quick connector.

[0013] According to an embodiment of the present invention, a quick connection structure suitable for circulating grouting of prestressed ducts is provided, wherein the inner sleeve of the snap-fit ​​quick connector extends rearward to form a sleeve tube, which is sleeved and fixed at the front end of the rear connecting pipe.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, the quick-connect structure can be sleeved onto and fixed to the body of the high-pressure pipe and / or the pre-embedded steel pipe, enabling rapid connection with the high-pressure pipe and / or the pre-embedded steel pipe. This is efficient, convenient, and provides stable connection quality. The connection quality only decreases with wear of the quick-connect device and is largely unaffected by human factors. This not only improves work efficiency but also reduces the labor intensity of workers, making the entire prestressed duct grouting process smoother. It also makes the connection between the grouting port and the grouting high-pressure pipe more efficient and convenient, ensuring stable connection quality and reducing the likelihood of grout leakage. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the prestressed double-hole circulating grouting process;

[0018] Figure 2 This is a schematic diagram of the snap-fit ​​quick connector in the embodiment of this utility model. Figure 1 ;

[0019] Figure 3 This is a schematic diagram of the snap-fit ​​quick connector in the embodiment of this utility model. Figure 2 ;

[0020] Figure 4 This is a schematic diagram of the structure of the rear connecting pipe in an embodiment of this utility model. Figure 1 ;

[0021] Figure 5 This is a schematic diagram of the structure of the rear connecting pipe in an embodiment of this utility model. Figure 2 .

[0022] Explanation of key component symbols:

[0023] 10. Two-way circulation channel; 20. Grouting port; 30. Grout outlet; 40. Grouting machine; 50. Grouting press; 60. Grout storage tank; 70. Snap-on quick connector; 71. Inner sleeve; 72. Outer sleeve; 73. Snap-on structure; 74. Sleeve pipe; 80. Rear connecting pipe. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] Example

[0029] This invention provides a quick connection structure suitable for prestressed duct circulatory grouting, such as... Figure 2 , 3 As shown in Figures 4 and 5, the device includes a high-pressure pipe, a pre-embedded steel pipe located at the grouting port 20, and a quick-connection device located at the inlet of the high-pressure pipe and the pre-embedded steel pipe. The quick-connection device can be sleeved and fixed to the pipe body on one or both sides.

[0030] In this invention, the quick-connect structure can be sleeved onto and fixed to the body of the high-pressure pipe and / or the pre-embedded steel pipe, enabling rapid connection with the high-pressure pipe and / or the pre-embedded steel pipe. This is efficient, convenient, and provides stable connection quality. The connection quality only decreases with wear of the quick-connect device and is largely unaffected by human factors. In this embodiment, the quick-connect device is made of stainless steel, which is wear-resistant, rust-resistant, and reusable. This not only improves work efficiency but also reduces the labor intensity of workers, making the entire prestressed duct grouting process smoother. It also makes the connection between the grouting port 20 and the grouting high-pressure pipe more efficient and convenient, with stable connection quality and less prone to grout leakage.

[0031] In some embodiments of this utility model application, such as Figure 2 , 3 As shown, the quick connection device includes a snap-fit ​​quick connector 70, which snaps together after connection. The snap-fit ​​connection method makes it more convenient, faster and more efficient to connect the grouting pipe, which is beneficial for the replacement of the grouting port 20.

[0032] In some embodiments of this utility model application, such as Figure 4 , 5As shown, a valve is installed at the inlet of the pre-embedded steel pipe. The valve includes an inlet end, an outlet end, and a switch valve. The outlet end of the valve is connected to the inlet of the pre-embedded steel pipe. The function of the valve is to quickly close the grouting port 110 after grouting is completed to prevent grout backflow. After grouting is completed, the valve can be closed directly and the grouting material can be allowed to solidify.

[0033] In some embodiments of this utility model application, the snap-fit ​​quick connector 70 is sleeved onto the inlet end of the valve and connected to the valve, and is snapped and fixed after being sleeved.

[0034] In some embodiments of this utility model application, such as Figure 1 , 2 As shown, the snap-fit ​​quick connector 70 includes an inner sleeve 71 and an outer sleeve 72. The inner sleeve 71 is fitted into the inlet end of the valve, and the outer sleeve 72 is fitted into the outside of the inlet end of the valve. A snap-fit ​​structure 73 is provided on the outer side wall of the outer sleeve 72.

[0035] In some embodiments of this utility model application, such as Figure 1 , 2 As shown, the quick-connect device also includes a rear connecting pipe 80. The rear end of the rear connecting pipe 80 is threadedly connected and fixed to the high-pressure pipe, and the front end of the rear connecting pipe 80 is connected to the inner sleeve 71 of the snap-fit ​​quick connector 70. Further, a sleeve 74 extends rearward from the inner sleeve 71 of the snap-fit ​​quick connector 70, and is sleeved and fixed to the front end of the rear connecting pipe 80. Before use, the valve is directly connected to the pre-embedded steel pipe, the rear connecting pipe 80 is connected to the high-pressure pipe, and the sleeve 74 is sleeved and fixed to the rear connecting pipe 80. During use, the snap-fit ​​quick connector 70 is directly sleeved and fixed to the valve.

[0036] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A quick connection structure suitable for prestressed duct circulatory grouting, characterized in that, It includes a high-pressure pipe, a pre-embedded steel pipe set at the grouting port (20), and a quick-connect device set at the inlet of the high-pressure pipe and the pre-embedded steel pipe. The quick-connect device can be sleeved and fixed to one or both sides of the pipe body. The quick-connect device includes a snap-fit ​​quick connector (70), which snaps and fixes itself after connection. The snap-fit ​​quick connector (70) is sleeved to the inlet end of the valve and connected to the valve, and snaps and fixes itself after sleeved connection. The head (70) includes an inner sleeve (71) and an outer sleeve (72). The inner sleeve (71) is fitted into the inlet end of the valve, and the outer sleeve (72) is fitted into the outside of the inlet end of the valve. A snap-fit ​​structure (73) is provided on the outer side wall of the outer sleeve (72). The quick-connect device also includes a rear connecting pipe (80). The rear end of the rear connecting pipe (80) is fixedly connected to the pipe thread of the high-pressure pipe, and the front end of the rear connecting pipe (80) is connected to the inner sleeve (71) of the snap-fit ​​quick connector (70).

2. The rapid connection structure suitable for prestressed duct circulatory grouting according to claim 1, characterized in that, A valve is installed at the inlet of the pre-embedded steel pipe. The valve includes an inlet end, an outlet end, and an on / off valve. The outlet end of the valve is connected to the inlet of the pre-embedded steel pipe.

3. The rapid connection structure suitable for prestressed duct circulatory grouting according to claim 1, characterized in that, The inner sleeve (71) of the snap-fit ​​quick connector (70) extends rearward to form a sleeve (74), which is sleeved and fixed to the front end of the rear connecting pipe (80) with the sleeve (74).

Images