CN220297021U

CN220297021U - Special tool for installing grouting hole sealing device of shield tunnel

Info

Publication number: CN220297021U
Application number: CN202321834180.4U
Authority: CN
Inventors: 杨醒宇; 林东; 裴利华; 彭荣华; 曾新平; 周瑞锋; 何磊; 冯炎; 洪闰林
Original assignee: China Railway Siyuan Survey and Design Group Co Ltd; Southwest Survey and Design Co Ltd of China Railway Siyuan Survey and Design Group Co Ltd
Current assignee: China Railway Siyuan Survey and Design Group Co Ltd; Southwest Survey and Design Co Ltd of China Railway Siyuan Survey and Design Group Co Ltd
Priority date: 2023-07-13
Filing date: 2023-07-13
Publication date: 2024-01-05
Anticipated expiration: 2033-07-13

Abstract

The utility model discloses a special tool for installing a grouting hole sealing device of a shield tunnel, which belongs to the technical field of shield tunnel construction and comprises a basic rod piece formed by an assembly vertical rod and a screwing cross rod, and a plurality of extension rod pieces. The special tool for installing the grouting hole sealing device of the shield tunnel has the advantages of simple structure, convenience in assembly and strong adjustment and adaptability, can meet the assembly and disassembly operations of the grouting hole sealing device in grouting holes at different positions in the shield tunnel, simplify the assembly and disassembly processes of the sealing device, ensure the assembly and disassembly precision of the sealing device, and improve the efficiency of grouting hole plugging construction.

Description

Special tool for installing grouting hole sealing device of shield tunnel

Technical Field

The utility model belongs to the technical field of shield tunnel construction, and particularly relates to a special tool for mounting a grouting hole sealing device of a shield tunnel.

Background

In the field of tunnel construction, shield tunnels are commonly applied, and are usually formed by assembling a plurality of segment blocks, so that a tubular tunnel structure is finally formed. In order to meet the requirements of duct piece assembly and hoisting, a hoisting hole is often formed in the duct piece structure. The hoisting holes are commonly used as grouting holes of the duct piece at the same time and used for grouting after the duct piece wall, and in some bad geological sections, the duct piece is additionally provided with other grouting holes besides the hoisting holes. When the shield tunnel structure performs post-grouting on the segment wall, grouting Kong Dachuan is needed, and grouting holes are plugged after grouting is completed.

At present, in tunnel construction engineering, a mode of filling common cement slurry or polymer cement slurry is mainly adopted for plugging grouting holes, and as the cement slurry needs a certain age to reach the expected strength, the grouting holes are difficult to be plugged compactly when water leakage exists in the tunnel. In many engineering examples, the situation of plugging grouting holes in a shield tunnel for water leakage is common; moreover, for the mode of adopting cement slurry to block grouting holes at the top of the tunnel, the blocked cement blocks are very easy to have falling risks under the action of wind pressure and water leakage of a long-term operation train, and the driving safety is threatened.

In order to solve the technical problem brought by the traditional grouting hole plugging mode, researchers researched a novel hole sealing device shown in fig. 7 to plug a grouting hole, and the problem of plugging the grouting hole is solved by setting one end of the hole sealing device to be a threaded section and utilizing threaded matching between the threaded section and a preset connecting piece in the grouting hole. However, how to mount and dismount the hole sealing device at the grouting hole is a problem that plagues constructors. Since the above-mentioned hole sealing device is required to be assembled and disassembled by screwing, it is usually performed manually by means of a corresponding wrench. However, the conventional wrench is difficult to directly adapt to a special hole sealing device, the difficulty in screwing operation is high, the situation that screwing is not in place possibly exists, the sealing performance and the accuracy of grouting hole plugging operation are affected, and the unnecessary leakage problem is caused; moreover, when the plugging operation of the grouting holes is carried out, the situation that the grouting holes are positioned at the top of the tunnel is quite likely to exist, and at the moment, a temporary construction scaffold is often required to be additionally built, so that the efficiency and the quality of the plugging operation cannot be effectively ensured, and even the normal operation of the tunnel is influenced.

Disclosure of Invention

Aiming at one or more of the defects or improvement demands in the prior art, the utility model provides a special tool for installing a grouting hole sealing device of a shield tunnel, which can be quickly matched with a specially designed sealing device, accurately complete the plugging operation of grouting holes at different positions in the shield tunnel, and improve the efficiency and quality of the plugging operation of the grouting holes.

In order to achieve the above purpose, the utility model provides a special tool for installing a grouting hole sealing device of a shield tunnel, which comprises a basic rod piece and a plurality of extension rod pieces;

the foundation rod piece comprises an assembly vertical rod and a screwing cross rod connected with one end of the assembly vertical rod, and a first assembly part is coaxially arranged at one end of the assembly vertical rod, which is away from the screwing cross rod; the first assembly part is of a prismatic structure with a polygonal cross section, and the cross section of the first assembly part is identical to the cross section of the mounting hole at the end part of the hole sealing device, so that the first assembly part can be just coaxially embedded in the mounting hole;

the extension rod piece comprises a rod-shaped extension vertical rod and a second assembly part coaxially arranged at the end part of the extension vertical rod; the second assembly part is of a prismatic structure with the cross section form identical to that of the first assembly part, and an extension assembly hole with the cross section shape identical to that of the mounting hole is coaxially formed in one end of the extension upright rod, which is far away from the second assembly part.

As a further improvement of the present utility model, the cross-sectional shape of the mounting hole is a triangle, a quadrangle, a pentagon or a hexagon;

correspondingly, the two assembly parts are triangular prisms, quadrangular prisms, pentagonal prisms or hexagonal prism structures which are correspondingly arranged.

As a further improvement of the utility model, one end of the assembly upright rod, which is away from the first assembly part, is a connecting part for connecting the screwing cross rod, and the connecting part is orthogonally connected to the middle part of the screwing cross rod.

As a further improvement of the utility model, the assembly upright rod is of a continuous prismatic structure, and a limiting convex ring is arranged on the periphery of one end of the assembly upright rod, which is close to the first assembly part, so as to form a limiting step;

or alternatively

The diameter of the circumscribed circle of the first assembly part is smaller than the outer diameter of the connecting part, and a limiting step is formed at the junction of the circumscribed circle of the first assembly part and the connecting part.

As a further improvement of the utility model, the diameter of the circumcircle of the second assembly part is smaller than the outer diameter of the extension upright rod, and a limiting step is formed at the junction of the two parts.

As a further development of the utility model, the base rod and/or the extension rod have a plurality of different length gauges.

As a further improvement of the present utility model, the base rod member and the extension rod member are both made of steel materials, and magnets are provided at the end portions of the respective fitting portions, respectively.

As a further improvement of the utility model, the length of each assembly part protruding out of the limit step is not greater than the axial depth of the mounting hole, so that the end part of the hole sealing device can be abutted against the corresponding limit step when each assembly part is respectively embedded in the mounting hole.

As a further improvement of the present utility model, the extension fitting hole extends to an end of the extension pole to which the second fitting part is connected.

As a further improvement of the utility model, the screwing cross rod is of a tubular structure with a hollow inside;

and/or

The parts of the base rod piece and/or the extension rod piece are integrally formed.

The above-mentioned improved technical features can be combined with each other as long as they do not collide with each other.

In general, the above technical solutions conceived by the present utility model have the beneficial effects compared with the prior art including:

(1) The utility model relates to a special tool for installing a grouting hole sealing device of a shield tunnel, which comprises a basic rod piece formed by an assembly vertical rod and a screwing cross rod, and an extension rod piece arranged corresponding to the basic rod piece, wherein the combined arrangement of a first assembly part on the assembly vertical rod, extension assembly holes on the extension rod piece and a second assembly part can realize the combined connection of the basic rod piece and a plurality of extension rod pieces to form the screwing special tool with a certain length, and then the first assembly part or the second assembly part accurately completes the embedding and matching with an installation hole on the sealing device, thereby rapidly completing the dismounting operation of the sealing device in the grouting hole, ensuring the accuracy and the reliability of the grouting hole sealing, simplifying the working procedure of the grouting hole sealing, shortening the working period of the grouting hole sealing, and saving the sealing operation cost and the overhaul and maintenance cost of the grouting hole.

(2) The special tool for installing the grouting hole sealing device of the shield tunnel is characterized in that the limit step or the annular step surface is arranged at one end of the base rod piece and the extension rod piece, which is provided with the assembly part, so that the limit after matching of the operation end part of the sealing device and the special tool can be realized rapidly, the positioning accuracy of the sealing device when the sealing device is matched with the special tool is ensured, the coaxial matching between the sealing device and the special tool is realized, the dismounting accuracy of the connecting section of the sealing device when the connecting section of the sealing device is matched with the screw thread of the embedded connecting piece in the grouting hole is fully ensured, the deflection of the sealing device when the sealing device is dismounted is avoided, and the accuracy of the sealing device when the grouting hole is plugged is further improved.

(3) The special tool for installing the grouting hole sealing device of the shield tunnel can finish the quick assembly of special tools with different lengths by arranging the base rod pieces and the extension rod pieces with different length specifications, thereby being suitable for plugging grouting holes with different distances, effectively improving the compatibility and the applicability of the special tool, meeting the use requirements under different application requirements, effectively expanding the application range of the special tool and saving the use cost of the special tool.

(4) The special tool for installing the grouting hole sealing device of the shield tunnel has the advantages of simple structure, convenience in assembly and strong adjustment and adaptability, can meet the requirement of the assembly and disassembly operations of the grouting hole sealing device in grouting holes at different positions in the shield tunnel, simplify the assembly and disassembly processes of the sealing device, ensure the assembly and disassembly precision of the sealing device, improve the efficiency of grouting hole plugging construction or overhauling maintenance, reduce the labor cost of grouting hole plugging operation, and have good practical value.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of a special tool for installing a grouting hole sealing device of a shield tunnel in an embodiment of the utility model;

FIG. 2 is a schematic view of the basic rod structure of the special tool according to the embodiment of the utility model;

FIG. 3 is a schematic view of the structure of an extension rod of the special tool according to the embodiment of the utility model;

FIG. 4 is a schematic view of a construction of a hole sealing device assembled by a foundation member using a special tool according to an embodiment of the present utility model;

FIG. 5 is a schematic structural view of a hole sealing device assembled by using a plurality of extension rods and a base rod in a matching manner in the embodiment of the utility model;

FIG. 6 is a schematic view of another arrangement of base strings according to an embodiment of the present utility model;

fig. 7 is a schematic view of a hole sealing device according to an embodiment of the present utility model;

FIG. 8 is a schematic diagram of a construction of a grouting hole plugging operation using a special tool according to an embodiment of the present utility model;

like reference numerals denote like technical features throughout the drawings, in particular:

1. a base rod member; 2. lengthening the rod piece; 3. a hole sealing device; 4. embedding a connecting piece; 5. shield segments; 6. grouting holes;

101. assembling a vertical rod; 1011. a first fitting portion; 1012. a connection part; 1013. a limit convex ring; 102. screwing the cross rod; 201. lengthening the upright rod; 202. a second fitting portion; 203. lengthening the assembly hole; 301. a mounting section; 302. a connection section; 303. and (5) mounting holes.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Examples:

referring to fig. 1, 4, 5 and 8, the special tool in the preferred embodiment of the present utility model is mainly used for performing the operation of dismounting the hole sealing device 3 from the grouting hole 6 on the shield segment 5 as shown in fig. 7, so as to realize the plugging of the grouting hole 6 after the grouting is completed or the dismounting of the hole sealing device 3 before the secondary grouting is required.

The sealing device 3 in the preferred embodiment is preferably made of a steel material or a high molecular polymer material, and includes a mounting section 301 and a connecting section 302 which are coaxially integrally formed. The installation section 301 is used for performing thread matching with the embedded connecting piece 4 embedded in the grouting hole 6, so that the hole sealing device 3 can be connected with the grouting hole 6. Meanwhile, the mounting section 301 is provided with a mounting hole 303 on the end face deviating from the connecting section 302, the mounting hole is a prismatic hole with a polygonal cross section, the assembly part of the special tool in the preferred embodiment is embedded and matched with the mounting hole, so that the mutual matching of the special tool and the hole sealing device 3 can be realized, the screwing and dismounting of the hole sealing device 3 can be completed through screwing the special tool, the accuracy and the reliability of the sealing connection of the hole sealing device 3 are ensured, and the dismounting process of the hole sealing device 3 is simplified.

Specifically, the special tool in the preferred embodiment is shown in fig. 1-6, and comprises a base rod 1 and a plurality of extension rods 2.

As shown in fig. 2, the base bar 1 comprises an assembly upright 101 in the form of a bar and a screwing crossbar 102 connected orthogonally thereto. Wherein, one end of the assembly upright 101 is a first assembly portion 1011, the first assembly portion 1011 is provided with a prismatic structure, and the cross section of the first assembly portion 1011 is the same as that of the mounting hole 303, so that the first assembly portion 1011 can be just embedded in the mounting hole 303, and further the rotation operation of the hole sealing device 3 can be completed by rotating the first assembly portion 1011.

Meanwhile, the other end of the assembly upright 101 is a connecting part 1012 for connecting the screwing cross rod 102, the connecting part 1012 is further preferably fixedly connected with the middle part of the screwing cross rod 102, and the connecting mode of the connecting part and the connecting part is further preferably welding, and finally a T-shaped structure as shown in fig. 2 is formed.

In practice, the assembly uprights 101 are preferably prismatic uprights, with the same cross-section throughout their length. Of course, depending on the actual setting, only the first mounting portion 1011 mounting the upright 101 may be provided in a prismatic form.

In more detail, in the actual installation, the outer diameter of the first fitting portion 1011 (the diameter of the circumscribed circle of the prism) is not larger than the outer diameter of one end of the connecting portion 1012 (the circumscribed circle is direct if the prism is formed).

For example, in a particularly preferred embodiment, the outer diameter of the first fitting portion 1011 is smaller than the outer diameter of one end of the connecting portion 1012, and the two form a step surface arranged circumferentially at the boundary, so that after the first fitting portion 1011 is matched with the mounting hole 303 of the plugging device 3, the end of the plugging device 3 can be positioned against the aforementioned step surface.

In another particularly preferred embodiment, the formation of the stepped surface at one end of the assembly pole 101 is obtained by providing a limiting collar 1013 on its outer periphery, as shown in fig. 6.

It will be understood that, when the stepped surface is actually provided, the length of the first fitting portion 1011 protruding from the stepped surface is not greater than the depth of the mounting hole 303, both of which are further approximately equal, so that it can be ensured that the stepped surface can reliably contact the end of the mounting section 301 of the plugging device 3, as shown in fig. 8.

More specifically, in actual arrangement, the cross-sectional shape of the mounting hole 303 may be triangular, quadrangular, pentagonal, or hexagonal, and accordingly, the first fitting portion 1011 is arranged as a corresponding triangular prism, a quadrangular prism, a pentagonal prism, or a hexagonal prism.

For example, in the preferred embodiment shown in fig. 2, the first fitting portion 1011 is provided as a regular hexagonal prism, and the mounting hole 303 is a regular hexagonal hole, and both may be coaxially matched.

In addition, the screwing cross rod 102 in the preferred embodiment is preferably a tubular structure with a hollow inside on the premise of ensuring the strength, so that the dead weight of the foundation rod 1 can be reduced, and the material required for forming the foundation rod 1 can be effectively saved, and the cost can be saved.

Further, as for the extension rod 2 in the preferred embodiment, it includes the extension pole 201 and the second fitting portion 202 provided at one end of the extension pole 201, and in actual setting, the second fitting portion 202 is provided in the same form as the first fitting portion 1011, and the outer diameter and length thereof are further preferably the same.

Meanwhile, the outer diameter of the second fitting part 202 is preferably smaller than the outer diameter of the extension pole 201, so that a limit step is formed at the junction of the two for limiting abutment with the end face of the mounting section 301 when the second fitting part 202 is matched with the hole sealing device 3.

In more detail, an extension mounting hole 203 is axially formed at an end of the extension upright 201 facing away from the second mounting portion 202, and the extension mounting hole 203 has the same cross-section arrangement form as the mounting hole 303, so that it can be respectively embedded and matched with the first mounting portion 1011 and the second mounting portion 202, thereby realizing embedded connection of the extension upright 201 at the end of the foundation rod 1 or at the end of the other extension upright 201.

Preferably, the opening length of the extension mounting hole 203 is preferably not less than half the length of the extension upright 201, and more preferably not less than the maximum length of the first mounting portion 1011 and the second mounting portion 202, so that the end of the extension upright 201 can abut against the corresponding limit step when the extension upright 201 is fitted with the extension mounting hole 203 in the corresponding mounting portion, as shown in fig. 5.

In actual setting, the extension assembly hole 203 preferably extends to the setting position of the second assembly portion 202, so, under the condition of guaranteeing the rigidity of the extension rod 2, the dead weight of the extension rod 2 can be effectively reduced, the operation difficulty of operators in tandem use is reduced, and the convenience of operation is improved.

Through the combination setting of basic member 1 and a plurality of extension member 2, can form the different screwing tool of length, and then the operation demand of screwing under the different working distances of adaptation.

Preferably, in the actual arrangement, the base rod member 1 and/or the extension rod member 2 are preferably provided in a plurality of length dimensions, which are selectable, so that different combinations can be made according to the actual operating requirements. For example, in the preferred embodiment shown in fig. 5, the screwing tool is composed of two extension bars 2 and one base bar 1, which are connected in series in sequence to form a length of work tool. Further, the operator can hold the both ends of the screwing cross bar 102 and rotate the screwing assembly pole 101, thereby completing the installation or the removal of the hole sealing device 3 in the grouting hole 6.

Further preferably, the base rod member 1 and the extension rod member 2 in the preferred embodiment are respectively made of steel materials, so that the rigidity and strength of the rod member can be effectively ensured; accordingly, the sealing device 3 is also preferably made of a steel material. Meanwhile, it is preferable that a magnet is provided at an end of each fitting portion so that each fitting portion can form a reliable connection structure when fitted with a corresponding fitting hole or mounting hole 303.

In actual arrangement, the parts of the base rod member 1 and/or the extension rod member 2 are preferably integrally formed, so that the structural integrity of each rod member can be effectively ensured.

In more detail, when the hole sealing device 3 is actually installed, it is further preferable that a water-swelling water-stop film is attached to the end of the connecting section 302, and/or a water-swelling sealing ring, a solid pigment ring, etc. are provided on the outer periphery of the installing section 301 or the end face on the side close to the connecting section 302, so that the sealing device 3 is installed accurately, the sealing performance of the grouting hole 6 is effectively improved, and the leakage occurrence state is rapidly displayed.

The special tool for installing the grouting hole sealing device of the shield tunnel has the advantages of simple structure, convenience in assembly and strong adjustment and adaptability, can meet the requirement of the disassembly and assembly operation of the grouting hole sealing device in grouting holes at different positions in the shield tunnel, simplifies the disassembly and assembly process of the sealing device, ensures the disassembly and assembly precision of the sealing device, improves the efficiency of grouting hole plugging construction or overhauling maintenance, reduces the labor cost of grouting hole plugging operation, and has good practical value.

It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. A specialized tool used for installing the grouting hole sealing device of the shield tunnel, characterized by that, including basic member and several extension member;

2. The special tool for installing a grouting hole sealing device of a shield tunnel according to claim 1, wherein the cross section of the installation hole is triangular, quadrangular, pentagonal or hexagonal;

3. The special tool for installing a grouting hole sealing device of a shield tunnel according to claim 1, wherein one end of the assembly upright rod, which is away from the first assembly part, is a connecting part connected with the screwing cross rod, and the connecting part is orthogonally connected with the middle part of the screwing cross rod.

4. The special tool for installing a grouting hole sealing device of a shield tunnel according to claim 3, wherein the assembly upright rod is of a continuous prismatic structure, and a limiting convex ring is arranged on the periphery of one end of the assembly upright rod, which is close to the first assembly part, so as to form a limiting step;

or alternatively

5. The special tool for installing a grouting hole sealing device of a shield tunnel according to any one of claims 1 to 4, wherein the diameter of the circumcircle of the second assembly part is smaller than the outer diameter of the extension upright rod, and a limiting step is formed at the junction of the two parts.

6. The special tool for installing a grouting hole sealing device of a shield tunnel according to any one of claims 1 to 4, wherein the base rod piece and/or the extension rod piece has a plurality of different length specifications which are selectable.

7. The special tool for installing a grouting hole sealing device of a shield tunnel according to any one of claims 1 to 4, wherein the base rod piece and the extension rod piece are both made of steel materials, and magnets are respectively arranged at the end parts of the assembly parts.

8. The special tool for installing a grouting hole sealing device of a shield tunnel according to claim 5, wherein the length of each assembly part protruding from the limiting step is not greater than the axial depth of the installation hole, so that the end part of the sealing device can abut against the corresponding limiting step when each assembly part is embedded in the installation hole respectively.

9. The special tool for installing a grouting hole sealing device of a shield tunnel according to any one of claims 1-4 and 8, wherein the extension assembly hole extends to one end of the extension upright rod connected with the second assembly part.

10. The special tool for installing a grouting hole sealing device of a shield tunnel according to any one of claims 1-4 and 8, wherein the screwing cross rod is of a tubular structure with a hollow inside;

and/or