Prefabricated base for installing and positioning water pipe of deeply-buried ditch in center of tunnel

Abstract

The utility model discloses a tunnel center deeply-buried ditch water pipe mounting and positioning prefabricated base, which belongs to the field of tunnel drainage facilities and comprises a main body, an arc-shaped groove is formed in the top end of the main body, a limiting mechanism is arranged above the arc-shaped groove, threaded sleeves are pre-buried at four corners of the bottom end of the main body, and threaded rods are arranged in the threaded sleeves. A fastening nut is arranged on the threaded rod, and a supporting base is fixed to the bottom end of the threaded rod. According to the utility model, the main body is prefabricated in advance, so that the pouring quality of the main body is improved, the cast-in-place equal-strength time of the main body is saved, and the construction efficiency is improved; the threaded sleeves are embedded in the four corners of the bottom end of the body and matched with the threaded rods, the supporting bases and the fastening nuts, so that the height of the body can be finely adjusted, and the gradient requirement of the reinforced concrete drainage pipe is met; and the limiting mechanism is arranged above the arc-shaped groove, so that double limiting is formed, the position of the reinforced concrete drainage pipe can be further limited, and dislocation and deviation during soil filling are prevented.

Description

Technical Field

[0001] The utility model belongs to the field of tunnel drainage facilities, in particular to a prefabricated base for installing and positioning water pipes in a deep-buried ditch in the center of a tunnel. Background Art

[0002] In recent years, my country has built many railways in high-altitude and cold regions. For the deep-buried ditches in the non-entrance center of the tunnel, most of them currently follow the drainage concept of warm regions and adopt the method of burying reinforced concrete drainage pipes in the invert filling. This method has the following problems:

[0003] 1. The positioning base needs to be cast on site, and the burial work can only be carried out after the positioning base reaches the design strength, which reduces the construction efficiency;

[0004] 2. During the burial process, it is often necessary to adjust the height of the positioning base to meet the slope requirements of the reinforced concrete drainage pipe. The existing adjustment method is to add a pad at the bottom of the positioning base, which not only has poor adjustment accuracy, but also reduces the stability of the positioning base;

[0005] 3. When filling the soil, the reinforced concrete drainage pipe is limited only by the arc-shaped groove of the positioning base, without any other limiting mechanism, and is prone to dislocation. Utility Model Content

[0006] The utility model aims to provide a prefabricated base for installing and positioning water pipes in a deep-buried ditch in the center of a tunnel, so as to solve the shortcomings existing in the prior art.

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

[0008] A prefabricated base for installing and positioning a water pipe deeply buried in a tunnel center comprises: a main body, an arc-shaped groove is provided on the top of the main body, a limiting mechanism is provided above the arc-shaped groove, threaded sleeves are pre-buried at the four corners of the bottom end of the main body, a threaded rod is provided in the threaded sleeve, a fastening nut is provided on the threaded rod, and a support seat is fixed to the bottom end of the threaded rod.

[0009] Preferably, a plurality of steel bar limiting holes are preset at the bottom end of the main body.

[0010] Preferably, a vertical limiting ring is provided on the outer wall of the threaded sleeve, and the vertical limiting ring is used to improve the stability of the connection between the threaded sleeve and the main body.

[0011] Preferably, the limiting mechanism comprises: a clamp, and the clamp is fixed to the main body by bolts.

[0012] Preferably, the limiting mechanism includes: a first base and a second base, the first base and the second base are fixed to both sides of the top of the main body by bolts, the first base is provided with a fixed shaft, a plastic restraint belt is sleeved on the fixed shaft, the plastic restraint belt is provided with a longitudinal thorn, the second base is provided with a locking buckle, and the locking buckle is provided with a barb matching the longitudinal thorn.

[0013] The utility model provides a prefabricated base for installing and positioning a deep-buried water pipe in a tunnel center, which has the following advantages over the prior art:

[0014] 1. Prefabrication of the main body in advance not only improves the quality of the main body casting, but also saves the time of on-site casting of the main body, thus improving the construction efficiency;

[0015] 2. By embedding threaded sleeves at the four corners of the bottom of the main body, and cooperating with threaded rods, support seats and fastening nuts, the height of the main body can be finely adjusted to meet the slope requirements of reinforced concrete drainage pipes;

[0016] 3. By setting a limit mechanism above the arc-shaped groove to form a double limit, the position of the reinforced concrete drainage pipe can be further limited to prevent dislocation and deviation during filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0018] Figure 1 This is a front cross-sectional view of the utility model equipped with a clamp;

[0019] Figure 2 for Figure 1 A local enlarged view at point A;

[0020] Figure 3 A front cross-sectional view of a plastic restraining belt configured for the utility model;

[0021] Figure 4 for Figure 3 A partial enlarged view at point B.

[0022] In the figure: 1-main body, 2-arc groove, 3-threaded sleeve, 4-threaded rod, 5-fastening nut, 6-support seat, 7-rebar limiting hole, 8-vertical limiting ring, 9-hoop, 10-first base, 11-second base, 12-fixed shaft, 13-plastic restraint belt, 14-forward thorn, 15-lock buckle, 16-barb. DETAILED DESCRIPTION

[0023] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0024] Example 1

[0025] refer to Figure 1-2 As shown, the utility model provides a prefabricated base for installing and positioning a deep-buried water ditch water pipe in the center of a tunnel, comprising: a main body 1, an arc-shaped groove 2 is provided at the top of the main body 1, a limiting mechanism is provided above the arc-shaped groove 2, threaded sleeves 3 are pre-buried at the four corners of the bottom end of the main body 1, a threaded rod 4 is provided in the threaded sleeve 3, a fastening nut 5 is provided on the threaded rod 4, and a support seat 6 is fixed at the bottom end of the threaded rod 4. When it is necessary to adjust the height of the main body 1, it is only necessary to rotate the threaded rod 4, adjust the relative distance between the threaded rod 4 and the threaded sleeve 3, and finally lock it by the fastening nut 5. Preferably, the main body 1 is generally arranged at the connection and both ends of the reinforced concrete drainage pipe.

[0026] As a preferred embodiment, the bottom end of the main body 1 is preset with a plurality of steel bar limiting holes 7. When the main body 1 is arranged, the steel bar limiting holes 7 of the main body 1 are aligned with the previously embedded limiting steel bars, thereby playing a role in positioning and limiting the position of the main body 1.

[0027] As a preferred embodiment, a vertical limiting ring 8 is provided on the outer wall of the threaded sleeve 3 , and the vertical limiting ring 8 is used to enhance the connection stability between the threaded sleeve 3 and the main body 1 .

[0028] As a preferred embodiment, the limiting mechanism includes: a clamp 9, which is fixed to the main body 1 by bolts. By arranging a limiting mechanism above the arc groove 2, a double limit is formed, which can further limit the position of the reinforced concrete drainage pipe to prevent dislocation and deviation during filling.

[0029] Example 2

[0030] refer to Figure 3-4 As shown, the main difference between this embodiment and embodiment 1 is that the limiting mechanism comprises: a first base 10 and a second base 11, the first base 10 and the second base 11 are fixed to both sides of the top of the main body 1 by bolts, the first base 10 is provided with a fixed shaft 12, the fixed shaft 12 is sleeved with a plastic restraint belt 13, the plastic restraint belt 13 is provided with a spur 14, the second base 11 is provided with a lock 15, and the lock 15 is provided with a barb 16 that matches the spur 14. When in use, the plastic restraint belt 13 is passed around the reinforced concrete drain pipe and inserted into the lock 15, so that the spur 14 on the plastic restraint belt 13 is clamped in the barb 16 of the lock 15, thereby realizing the binding and limiting of the reinforced concrete drain pipe.

[0031] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0032] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0033] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A prefabricated base for installing and positioning water pipes in a deep-buried ditch in the center of a tunnel, characterized in that: include: A main body (1), the top of the main body (1) is provided with an arc-shaped groove (2), a limit mechanism is arranged above the arc-shaped groove (2), threaded sleeves (3) are pre-buried at the four corners of the bottom end of the main body (1), a threaded rod (4) is arranged in the threaded sleeve (3), a fastening nut (5) is arranged on the threaded rod (4), and a support seat (6) is fixed at the bottom end of the threaded rod (4).

2. The prefabricated base for installing and positioning water pipes in a deep-buried ditch in the center of a tunnel according to claim 1 is characterized in that: A plurality of steel bar limiting holes (7) are preset at the bottom end of the main body (1).

3. The prefabricated base for installing and positioning water pipes in a deep-buried ditch in the center of a tunnel according to claim 1 is characterized in that: A vertical limiting ring (8) is provided on the outer wall of the threaded sleeve (3), and the vertical limiting ring (8) is used to improve the stability of the connection between the threaded sleeve (3) and the main body (1).

4. The prefabricated base for installing and positioning water pipes in a deep-buried ditch in the center of a tunnel according to claim 1 is characterized in that: The limiting mechanism comprises: a clamp (9), and the clamp (9) is fixed to the main body (1) by means of bolts.

5. The prefabricated base for installing and positioning water pipes in a deep-buried ditch in the center of a tunnel according to claim 1 is characterized in that: The limiting mechanism comprises: a first base (10) and a second base (11), wherein the first base (10) and the second base (11) are fixed to two sides of the top of the main body (1) by bolts, the first base (10) is provided with a fixed shaft (12), a plastic restraining belt (13) is sleeved on the fixed shaft (12), and a longitudinal thorn (14) is provided on the plastic restraining belt (13), and the second base (11) is provided with a lock buckle (15), and a barb (16) matching the longitudinal thorn (14) is provided inside the lock buckle (15).

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