Guide pipe grouting device for tunnel construction

Abstract

The utility model discloses a guide pipe grouting device for tunnel construction, belongs to the technical field of grouting devices, and solves the technical problems that when a grouting hole in a grouting guide pipe in the prior art is placed into a hole, friction exists between the grouting guide pipe and the hole wall, the exposed grouting hole is prone to being clamped and blocked by impurities due to friction, and the grouting efficiency is high. And therefore, the problem of grouting blockage is more easily caused is solved. The grouting device comprises a grouting guide pipe, a grouting hole formed in the grouting guide pipe, and a protection structure movably arranged in the grouting guide pipe and used for protecting the grouting hole. The protection structure comprises arc-shaped protection pieces which are arranged corresponding to the grouting holes and matched with the inner wall of the grouting guide pipe, a plurality of telescopic reset structures connected with the arc-shaped protection pieces, and inner rods connected with the telescopic reset structures. The guide pipe grouting device is used for guide pipe grouting for tunnel construction.

Description

Technical Field

[0001] The invention discloses a conduit grouting device for tunnel construction, which is used for conduit grouting for tunnel construction and belongs to the technical field of grouting devices. Background Art

[0002] The conduit grouting device for tunnel construction plays a vital role in tunnel engineering. It is mainly used to inject slurry into the stratum to improve the physical and mechanical properties of the soil, enhance the self-stability of the soil, and ensure the safety and stability of tunnel construction. It includes a conduit, a grouting pump, a slurry storage tank and a control system. The conduit is usually made of a steel pipe and has multiple grouting holes for transporting slurry into the stratum. The outer diameter and wall thickness of the conduit need to be selected according to the engineering requirements to ensure its sufficient strength and durability. The grouting pump is responsible for transporting the slurry from the slurry storage tank to the conduit, and has adjustable grouting pressure and flow to meet the grouting needs of different strata. The slurry storage tank is used to store the prepared slurry to ensure the continuity and stability of the grouting process. The control system includes equipment such as pressure gauges and flow meters, which are used to monitor and control parameters such as pressure and flow in the grouting process in real time to ensure the grouting effect and quality.

[0003] In practice, first select the appropriate grouting materials and proportions according to the engineering requirements and formation characteristics, and prepare the slurry that meets the requirements. Drive the conduit into the formation or into the drilled hole at a certain angle around the tunnel working face to ensure that the conduit is in close contact with the formation. Start the grouting pump and inject the slurry into the formation through the conduit and grouting hole. During the grouting process, adjust the grouting speed and grouting volume according to the real-time monitoring of the grouting pressure and flow parameters to achieve the desired grouting effect.

[0004] However, the conduit in the conduit grouting device for tunnel construction in the prior art has the following technical problems:

[0005] When the grouting holes on the grouting tube are placed in the hole, there is friction between the grouting tube and the hole wall. The grouting holes exposed to the outside are prone to clogging impurities due to friction, which makes it easier to cause grouting blockage problems. Utility Model Content

[0006] The utility model aims to provide a conduit grouting device for tunnel construction, so as to solve the problem in the prior art that when the grouting holes on the grouting conduit are placed in the hole, there is friction between the grouting conduit and the hole wall, and the grouting holes exposed to the outside are easily stuck with blocking impurities due to friction, which makes it easier to cause grouting blockage.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A conduit grouting device for tunnel construction, comprising a grouting conduit, a grouting hole arranged on the grouting conduit, and a protective structure movably arranged in the grouting conduit to protect the grouting hole;

[0009] The protection structure comprises an arc-shaped protection sheet arranged corresponding to the grouting holes and matched with the inner wall of the grouting conduit, a plurality of telescopic reset structures connected to each arc-shaped protection sheet, and an inner rod connected to each telescopic reset structure.

[0010] Furthermore, the telescopic reset structure includes a telescopic rod connected to the inner rod and the arc-shaped protective sheet, and a reset spring sleeved outside the telescopic rod and connected to the inner rod and the arc-shaped protective sheet.

[0011] Furthermore, the protection structure also includes a limiting structure arranged between the inner rod and the arc-shaped protection sheet to limit the movement of the arc-shaped protection sheet toward one side of the inner rod.

[0012] Furthermore, the limiting structure includes a push-pull handle matched with the inner rod sleeve, and an arc-shaped limiting plate arranged on the push-pull handle for inserting between adjacent arc-shaped protective sheets and the inner rod to contract and limit the arc-shaped protective sheets, the return spring and the telescopic rod.

[0013] Furthermore, the arc-shaped limiting plate is in contact with and matched with the inner wall of the arc-shaped protective sheet, and is separated from and matched with the inner rod.

[0014] Further, the arc-shaped limit plate is fixedly connected to the push-pull handle, and the distance between the outer wall of the arc-shaped limit plate and the center of the inner rod is smaller than the distance between the inner wall of the arc-shaped protection plate and the center of the inner rod when the arc-shaped protection plate is in contact with the inner wall of the grouting conduit, which is 0.1 cm-0.5 cm; or

[0015] The push-pull handle is provided with a T-shaped slot with one side open, the arc-shaped limit plate is provided with a screw matched with the T-shaped slot and a nut matched with the thread, and the arc-shaped limit plate moves up and down in coordination with the T-shaped slot.

[0016] Furthermore, the arc-shaped protective sheet is provided with a sealing knob corresponding to the grouting hole.

[0017] Furthermore, an eight-shaped positioning piece is provided on the grouting conduit.

[0018] Compared with the prior art, the advantages of the utility model are:

[0019] 1. Before the grouting hole on the grouting conduit in the utility model is placed in the hole, a protective structure can be inserted inside it. The arc-shaped protective sheet in the protective structure is arranged corresponding to the grouting hole, and can cooperate with the inner wall of the grouting conduit to effectively protect the grouting hole, so as to prevent the grouting conduit from causing friction with the hole wall during the process of placing the grouting conduit in the hole, and the grouting hole is easily stuck with impurities. After placement, the protective structure in the grouting conduit is removed, thereby effectively avoiding the problem of subsequent grouting grouting holes being blocked;

[0020] Second, the purpose of setting the telescopic rod in the utility model is to ensure the stability of the arc-shaped protective sheet, and the purpose of setting the reset spring is to facilitate the use of the reset effect of the reset spring to extend the telescopic rod, so that the telescopic reset structure is convenient for compressing the arc-shaped protective sheet, so that the protective structure can be easily inserted into the grouting conduit, and the arc-shaped protective sheet can be fit with the inner wall of the grouting conduit through the reset effect of the reset spring, so as to play the role of blocking the grouting hole;

[0021] 3. The limiting structure in the utility model can effectively limit the moving distance of the arc-shaped protective sheet toward the inner rod side, thereby preventing the arc-shaped protective sheet from being subjected to the force of impurities on the grouting hole, so that the arc-shaped protective sheet and the grouting conduit cooperate to enter the impurities;

[0022] Fourth, the purpose of limiting the arc-shaped limit plate of the utility model to contact and cooperate with the inner wall of the arc-shaped protective sheet and to separate and cooperate with the inner rod is to reduce the friction force when the arc-shaped limit plate is inserted between the arc-shaped protective sheet and the inner rod;

[0023] 5. The purpose of the utility model is to facilitate the arc-shaped limit plate to be easily inserted between the arc-shaped protective sheet and the inner rod, and to limit the arc-shaped protective sheet to avoid the problem of impurities entering the grouting hole;

[0024] 6. The purpose of providing a plugging convex button corresponding to the grouting hole on the arc-shaped protective sheet of the utility model is to further avoid the problem of impurities being easily stuck on the grouting hole;

[0025] 7. The purpose of arranging the positioning piece in the utility model is to ensure that the grouting conduit is stable and high after being inserted into the hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the structure of the utility model;

[0028] Figure 2 for Figure 1 A partial cross-sectional view of

[0029] Figure 3 It is a structural schematic diagram of the protective structure in the utility model;

[0030] Figure 4 It is a structural schematic diagram of the grouting conduit in the utility model;

[0031] Figure 5 It is a structural schematic diagram of the limiting structure in the utility model;

[0032] In the figure: 1-grouting conduit, 2-grouting hole, 3-protective structure, 4-arc-shaped protective plate, 5-telescopic reset structure, 6-inner rod, 7-telescopic rod, 8-reset spring, 9-limiting structure, 10-push-pull handle, 11-arc-shaped limiting plate, 12-convex button, 13-positioning plate. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] In the description of the present utility model, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model 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 utility model.

[0036] In addition, the terms “first”, “second”, “third”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0037] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connection", 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 indirectly connected 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.

[0039] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0040] Example 1

[0041] In order to solve the problem that when the grouting holes on the grouting pipes in the prior art are placed in the holes, there is friction between the grouting pipes and the hole wall, and the grouting holes exposed to the outside are easily blocked by impurities due to friction, which makes it easier to cause grouting blockage. Figure 1-5 As shown, a catheter grouting device for tunnel construction is provided, including a grouting catheter 1, a grouting hole 2 arranged on the grouting catheter 1, and a protective structure 3 movably arranged in the grouting catheter 1 to protect the grouting hole; the protective structure 3 includes an arc-shaped protective sheet 4 arranged corresponding to the grouting hole 2 and matched with the inner wall of the grouting catheter 1, a plurality of telescopic reset structures 5 connected to each of the arc-shaped protective sheets 4, and an inner rod 6 connected to each of the telescopic reset structures 5.

[0042] In practice, before the grouting hole on the grouting tube is placed in the hole, a protective structure is first inserted inside it, and then the arc-shaped protective sheet in the protective structure is arranged corresponding to the grouting hole, and the arc-shaped protective sheet is matched with the inner wall of the grouting tube to protect the grouting hole, so as to prevent the grouting hole from being stuck and blocked by impurities due to friction between the grouting tube and the hole wall during the process of placing the grouting tube into the hole. After placement, the protective structure in the grouting tube is removed, thereby effectively avoiding the problem of subsequent grouting holes being blocked.

[0043] Example 2

[0044] On the basis of Example 1, the telescopic reset structure 5 includes a telescopic rod 7 connected to the inner rod 6 and the arc-shaped protective sheet 4 and a reset spring 8 sleeved outside the telescopic rod 7 and connected to the inner rod 6 and the arc-shaped protective sheet 4 .

[0045] In practice, before the grouting hole on the grouting conduit is placed in the hole, hold one end of the arc-shaped protective sheet 4 to press the telescopic rod 7 and the reset spring 8 to shrink, insert it into the grouting conduit, and after inserting, push the inner rod to make the arc-shaped protective sheet 4 completely inserted into the grouting conduit, and rotate the inner rod so that the arc-shaped protective sheet 4 connected thereto corresponds to the grouting hole on the corresponding side. Due to the reset effect of the reset spring, the arc-shaped protective sheet can be completely fitted with the inner wall of the grouting conduit to achieve the purpose of protecting the grouting hole, and then place the grouting hole into the hole. After inserting, fix the grouting conduit with one hand and pull the protective structure with the other hand to separate it from the grouting conduit, which is also conducive to secondary use. The purpose of the telescopic rod in this embodiment is to ensure the stability of the arc-shaped protective sheet, and the purpose of setting the reset spring is to facilitate the use of the reset effect of the reset spring to extend the telescopic rod. Therefore, the telescopic reset structure is convenient for compressing the arc-shaped protective sheet, so that the protective structure can be easily inserted into the grouting conduit, and the arc-shaped protective sheet can be fitted with the inner wall of the grouting conduit by the reset effect of the reset spring to play the role of blocking the grouting hole.

[0046] Example 3

[0047] On the basis of Example 2, the protection structure 3 also includes a limiting structure 9 arranged between the inner rod 6 and the arc-shaped protection sheet 4 to limit the movement of the arc-shaped protection sheet 4 toward the inner rod 6. The limiting structure can effectively limit the movement distance of the arc-shaped protection sheet toward the inner rod, thereby avoiding the arc-shaped protection sheet from being subjected to the force of impurities on the grouting hole, so that the arc-shaped protection sheet and the grouting conduit are matched to enter the impurities. The limiting structure 9 includes a push-pull handle 10 that is matched with the inner rod 6 sleeve, and an arc-shaped limiting plate 11 arranged on the push-pull handle 10 for inserting between the adjacent arc-shaped protection sheet 4 and the inner rod 6 to limit the arc-shaped protection sheet 4, the return spring 8 and the telescopic rod 7 to contract.

[0048] In practice, after the protective structure is inserted into the grouting conduit, the arc-shaped limit plate 11 is inserted between the arc-shaped protective sheet 4 and the inner rod, and the push-pull handle 10 is sleeved on the inner rod 6.

[0049] Example 4

[0050] On the basis of Example 3, the arc-shaped limit plate 11 is in contact with the inner wall of the arc-shaped protection sheet 4 and is separated from the inner rod 6. The purpose of limiting the arc-shaped limit plate to be in contact with the inner wall of the arc-shaped protection sheet and to be separated from the inner rod is to reduce the friction force when the arc-shaped limit plate is inserted between the arc-shaped protection sheet and the inner rod.

[0051] The arc-shaped limit plate 11 is fixedly connected to the push-pull handle 10, and the distance between the outer wall of the arc-shaped limit plate 11 and the center of the inner rod 6 is smaller than the distance between the inner wall of the arc-shaped protection sheet 4 and the center of the inner rod 6 when the arc-shaped protection sheet 4 is in contact with the inner wall of the grouting conduit 1, which is 0.1cm-0.5cm, such as 0.2cm, 0.3cm, 0.4cm, in order to reduce the friction force when the arc-shaped limit plate is inserted, and at the same time, the arc-shaped protection sheet can be effectively limited after insertion to protect the grouting hole; or

[0052] The push-pull handle 10 is provided with a T-shaped slot with one side open, and the arc-shaped limit plate 11 is provided with a screw rod matched with the T-shaped slot and a nut matched with the thread, and the arc-shaped limit plate 11 moves up and down in the T-shaped slot to cooperate. It is convenient to insert the arc-shaped limit plate between the arc-shaped protective sheet and the inner rod first, insert the arc-shaped limit plate into the corresponding T-shaped slot, and limit its position in the T-shaped slot by the nut to limit the arc-shaped protective sheet.

[0053] Example 5

[0054] On the basis of Example 4, the arc-shaped protection sheet 4 is provided with a plugging convex button 12 corresponding to the grouting hole 2. The purpose of providing the plugging convex button corresponding to the grouting hole on the arc-shaped protection sheet is to further avoid the problem of impurities being easily stuck on the grouting hole.

[0055] Example 6

[0056] On the basis of Example 5, the grouting conduit 1 is provided with an eight-shaped positioning piece 13, the purpose of providing the positioning piece is to ensure that the grouting conduit is stable and high after being inserted into the hole.

Claims

1. A conduit grouting device for tunnel construction, comprising a grouting conduit (1), a grouting hole (2) arranged on the grouting conduit (1), characterized in that: It comprises a protective structure (3) movably arranged in the grouting conduit (1) to protect the grouting hole; The protective structure (3) comprises an arc-shaped protective sheet (4) arranged corresponding to the grouting hole (2) and matched with the inner wall of the grouting conduit (1), a plurality of telescopic reset structures (5) connected to each of the arc-shaped protective sheets (4), and an inner rod (6) connected to each of the telescopic reset structures (5).

2. A conduit grouting device for tunnel construction according to claim 1, characterized in that: The telescopic reset structure (5) comprises a telescopic rod (7) connected to the inner rod (6) and the arc-shaped protective sheet (4), and a reset spring (8) sleeved outside the telescopic rod (7) and connected to the inner rod (6) and the arc-shaped protective sheet (4).

3. A conduit grouting device for tunnel construction according to claim 1 or 2, characterized in that: The protection structure (3) also includes a limiting structure (9) disposed between the inner rod (6) and the arc-shaped protection sheet (4) for limiting the movement of the arc-shaped protection sheet (4) toward one side of the inner rod (6).

4. A conduit grouting device for tunnel construction according to claim 3, characterized in that: The limiting structure (9) comprises a push-pull handle (10) sleeved with the inner rod (6), and an arc-shaped limiting plate (11) arranged on the push-pull handle (10) and used for being inserted between the adjacent arc-shaped protective sheet (4) and the inner rod (6) to perform contraction limiting on the arc-shaped protective sheet (4), the return spring (8) and the telescopic rod (7).

5. A conduit grouting device for tunnel construction according to claim 4, characterized in that: The arc-shaped limiting plate (11) is in contact with and matched with the inner wall of the arc-shaped protection sheet (4), and is separated from and matched with the inner rod (6).

6. A conduit grouting device for tunnel construction according to claim 4, characterized in that: The arc-shaped limit plate (11) is fixedly connected to the push-pull handle (10), and the distance between the outer wall of the arc-shaped limit plate (11) and the center of the inner rod (6) is smaller than the distance between the inner wall of the arc-shaped protection plate (4) and the center of the inner rod (6) when the arc-shaped protection plate (4) and the inner wall of the grouting conduit (1) are in contact with each other, which is 0.1 cm to 0.5 cm; or The push-pull handle (10) is provided with a T-shaped slot with one side open, and the arc-shaped limiting plate (11) is provided with a screw matched with the T-shaped slot and a nut matched with the thread, and the arc-shaped limiting plate (11) moves up and down in coordination with the T-shaped slot.

7. A conduit grouting device for tunnel construction according to claim 6, characterized in that: The arc-shaped protective sheet (4) is provided with a sealing convex button (12) corresponding to the grouting hole (2).

8. A conduit grouting device for tunnel construction according to claim 7, characterized in that: The grouting conduit (1) is provided with an eight-shaped positioning piece (13).

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