Tunnel transverse hole transition section excavation auxiliary steel frame

Abstract

The utility model discloses a tunnel transverse hole transition section excavation auxiliary steel frame which comprises a base assembly and an arch support assembly, the base assembly comprises a supporting column base, an adjusting handle, an infrared transmitter and a fixing base, and the arch support assembly comprises an outer arc-shaped side frame, an inner arc-shaped support and a quick connecting assembly. The outer arc-shaped side frame is fastened to the top of the supporting column base through bolts, and the inner arc-shaped support abuts against and is fixed to the surface of the end, away from the top of the supporting column base, of the outer arc-shaped side frame and is connected with one end of the outer arc-shaped side frame through a quick connecting assembly. The outer arc-shaped side frame and the inner arc-shaped support are connected to form an arch-shaped frame used for supporting the inner top wall of the tunnel. Therefore, the device can stably support and protect the inner wall of the tunnel, is high in structural stability, does not affect movement of other equipment during use, and is good in use effect.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel auxiliary steel frames, in particular to an auxiliary steel frame for excavating a tunnel transverse hole transition section. Background Art

[0002] During the excavation process of the existing tunnel cross-hole, in order to reinforce the tunnel wall and reduce soil loosening, it is necessary to build a steel frame on the inner wall of the tunnel.

[0003] The patent application document with publication number CN116255170A discloses a tunnel transverse tunnel transition section excavation auxiliary steel frame, which is mainly composed of arc-shaped separation plates and can be spliced ​​and extended in a spiral shape into the tunnel. However, in actual use, it was found that the device has the following defects: first, since the separation plates are arc-shaped, their stability is relatively low when placed on the ground; second, since they are spliced ​​and extended in a spiral shape into the tunnel, the separation plates on the ground will hinder the movement of other equipment, making it inconvenient for other equipment to move. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, the purpose of the utility model is to propose an auxiliary steel frame for excavating the transition section of a tunnel transverse hole, which can stably support and protect the inner wall of the tunnel, has strong structural stability, does not affect the movement of other equipment when in use, and has a good use effect.

[0006] To achieve the above-mentioned purpose, the utility model proposes an auxiliary steel frame for excavating a transition section of a tunnel transverse hole, comprising a base assembly and an arch support assembly, wherein the base assembly comprises a support column seat, an adjustment handle, an infrared transmitter and a fixed base, wherein the support column seat is equipped with a screw lifting mechanism, the adjustment handle is rotatably connected to the surface of the support column seat and is connected to one end of the screw lifting mechanism, the fixed base is slidably connected to the bottom of the support column seat and is connected to the other end of the screw lifting mechanism, and the infrared transmitter is arranged on the surface of the support column seat; the arch support assembly comprises an outer arc side frame, an inner arc support and a quick connection assembly, wherein the outer arc side frame is bolted to the top of the support column seat, the inner arc support is abutted and fixed on the end surface of the outer arc side frame away from the top of the support column seat, and is connected to one end of the outer arc side frame through the quick connection assembly; after the outer arc side frame is connected to the inner arc support, an arch frame for supporting the inner top wall of the tunnel is formed.

[0007] The utility model provides an auxiliary steel frame for excavating a tunnel transverse hole transition section, which can stably support and protect the inner wall of the tunnel, has strong structural stability, does not affect the movement of other equipment when in use, and has good use effect.

[0008] In addition, the tunnel transverse tunnel transition section excavation auxiliary steel frame proposed in the application may also have the following additional technical features:

[0009] Specifically, the quick-connect assembly includes an arc-shaped slot, an arc-shaped connecting block and a locking bolt, wherein the arc-shaped slots are respectively opened on the surfaces of the outer arc-shaped side frame and the inner arc-shaped bracket, and the positions are corresponding; the arc-shaped connecting block is slidably connected to the inner wall of the arc-shaped slot, and is fixedly connected to the inner wall of the arc-shaped slot through the locking bolt.

[0010] Specifically, it also includes a connecting rod assembly, which includes a connecting end, a protective rod, a connecting clamp and a spring, wherein the connecting end is symmetrically threadedly connected to the surface of the outer arc side frame and the inner arc bracket, and the positions are corresponding; one end of the connecting clamp is slidably connected to the inner wall of the protective rod, and the spring is fixedly connected to the inner wall of the protective rod, and the other end of the connecting clamp is located inside the connecting end and is slidably connected to the inner wall of the connecting end.

[0011] Specifically, it also includes a protective plate frame, which includes an arc-shaped step portion, an elastic clamping rod and an arc-shaped baffle plate, wherein the arc-shaped step portion is symmetrically arranged on the surface of the outer arc-shaped side frame and the inner arc-shaped bracket, and the positions are corresponding; the elastic clamping rod is arranged on the surface of the arc-shaped step portion; the arc-shaped baffle plate is arranged on the surface of the arc-shaped step portion, and is abutted and fixed to one end of the elastic clamping rod.

[0012] Specifically, a threaded hole is provided on the inner wall of the arc-shaped slot, and one end of the locking bolt is threadedly connected to the inner wall of the threaded hole.

[0013] Specifically, scale lines are arranged on the surface of the support column seat.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0016] Figure 1 A schematic diagram of a tunnel horizontal tunnel transition section excavation auxiliary steel frame structure;

[0017] Figure 2 A schematic diagram of the structure of an arch support assembly in a tunnel transverse tunnel transition section excavation auxiliary steel frame;

[0018] Figure 3 A schematic diagram of the structure of a connecting rod assembly in an auxiliary steel frame for excavating a tunnel transverse transition section;

[0019] Figure 4 This is a schematic diagram of the protective plate frame structure in a tunnel cross-hole transition section excavation auxiliary steel frame.

[0020] As shown in the figure:

[0021] 1. Base assembly; 2. Arch bracket assembly; 11. Support column seat; 12. Adjustment handle; 13. Infrared transmitter; 14. Fixed base;

[0022] 21. Outer arc side frame; 22. Inner arc bracket; 23. Quick-connect assembly;

[0023] 231, arc-shaped slot; 232, arc-shaped connecting block; 233, locking bolt;

[0024] 3. Connecting rod assembly; 31. Connecting end; 32. Protective rod; 33. Connecting column; 34. Spring;

[0025] 4. Protective plate frame; 41. Arc-shaped step portion; 42. Elastic clamping rod; 43. Arc-shaped baffle. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention. On the contrary, the embodiments of the present invention include all changes, modifications, and equivalents that fall within the spirit and connotation of the appended claims.

[0027] A tunnel transverse hole transition section excavation auxiliary steel frame according to an embodiment of the utility model will be described below in conjunction with the accompanying drawings.

[0028] like Figure 1-Figure 4As shown, an auxiliary steel frame for excavating a tunnel transition section of a tunnel according to an embodiment of the utility model comprises a base assembly 1 and an arch support assembly 2, wherein the base assembly 1 comprises a support column seat 11, an adjustment handle 12, an infrared transmitter 13 and a fixed base 14, wherein the support column seat 11 is built with a screw lifting mechanism (not shown in the figure), the adjustment handle 12 is rotatably connected to the surface of the support column seat 11 and is connected to one end of the screw lifting mechanism, the fixed base 14 is slidably connected to the bottom of the support column seat 11 and is connected to the other end of the screw lifting mechanism The outer arc side frame 21 is bolted to the top of the support column seat 11, and the inner arc bracket 22 is fixed to the end surface of the outer arc side frame 21 away from the top of the support column seat 11, and is connected to one end of the outer arc side frame 21 through the quick connection assembly 23; the outer arc side frame 21 is connected to the inner arc bracket 22 to form an arch frame for supporting the top wall of the tunnel.

[0029] It should be noted that the screw lifting mechanism described in this embodiment is a prior art and will not be described here.

[0030] Specifically, when placing the base assembly 1, in order to ensure the stability of the fixed base 14, its placement position needs to be processed. After the processing, the fixed base 14 is placed, and then the infrared transmitter 13 is turned on. The infrared transmitter 13 is used to observe whether the height of the support column seat 11 is consistent. If the height is inconsistent, the adjustment handle 12 is rotated. The rotation of the adjustment handle 12 synchronously drives the screw lifting mechanism to operate. The operation of the screw lifting mechanism synchronously drives the support column seat 11 to rise and fall along the surface of the fixed base 14 to achieve height adjustment. After the height adjustment is completed, first tighten the outer arc side frame 21 with bolts on the top of the support column seat 11, and then abut the inner arc bracket 22 with the outer arc side frame 21 in an arch shape. After abutment, the inner arc bracket 22 and the outer arc side frame 21 are connected through the quick connection assembly 23.

[0031] The device can stably support and protect the inner wall of the tunnel, has strong structural stability, does not affect the movement of other equipment when in use, and has good use effect.

[0032] In one embodiment of the present invention, Figure 2 As shown, the quick-connect assembly 23 includes an arc-shaped slot 231, an arc-shaped connecting block 232 and a locking bolt 233, wherein the arc-shaped slot 231 is respectively opened on the surface of the outer arc-shaped side frame 21 and the inner arc-shaped bracket 22, and the positions are corresponding; the arc-shaped connecting block 232 is slidably connected to the inner wall of the arc-shaped slot 231, and is fixedly connected to the inner wall of the arc-shaped slot 231 through the locking bolt 233.

[0033] It should be noted that, the inner part of the arc-shaped slot 231 and the surface of the arc-shaped connecting block 232 described in this embodiment are respectively provided with a limiting guide groove and a limiting guide block, and the limiting guide block is slidably connected to the inner wall of the limiting guide groove.

[0034] Specifically, after the inner arc bracket 22 is abutted against the outer arc side frame 21, the arc connecting block 232 on the inner arc bracket 22 is moved so that one end of it enters the arc slot 231 on the outer arc side frame 21, and then the arc connecting block 232 and the arc slot 231 are fixed by the locking bolt 233.

[0035] In one embodiment of the present invention, Figure 3 As shown, it also includes a connecting rod assembly 3, which includes a connecting end 31, a protective rod 32, a connecting clamping column 33 and a spring 34, wherein the connecting end 31 is symmetrically threadedly connected to the surfaces of the outer arc side frame 21 and the inner arc bracket 22, and the positions are corresponding; one end of the connecting clamping column 33 is slidably connected to the inner wall of the protective rod 32, and a spring 34 is fixedly connected between the inner wall of the protective rod 32, and the other end of the connecting clamping column 33 is located inside the connecting end 31, and is slidably connected to the inner wall of the connecting end 31.

[0036] It should be noted that the spacing between two adjacent groups of connecting ends 31 described in this embodiment is equal to the length of the protective rod 32, wherein the length of the protective rod 32 can be set according to actual usage, or the protective rod 32 can be set as a telescopic rod with adjustable length.

[0037] Specifically, when connecting, press the connection clamp 33 into the protection rod 32, and then align the protection rod 32 with the connection terminal 31. After alignment, release the connection clamp 33, and the connection clamp 33 enters the connection terminal 31 under the elastic force of the spring 34 to achieve connection.

[0038] In one embodiment of the present invention, Figure 4 As shown, it also includes a protective plate frame 4, which includes an arc-shaped step portion 41, an elastic clamping rod 42 and an arc-shaped baffle plate 43, wherein the arc-shaped step portion 41 is symmetrically arranged on the surfaces of the outer arc-shaped side frame 21 and the inner arc-shaped bracket 22, and the positions are corresponding; the elastic clamping rod 42 is arranged on the surface of the arc-shaped step portion 41; the arc-shaped baffle plate 43 is arranged on the surface of the arc-shaped step portion 41, and is abutted and fixed with one end of the elastic clamping rod 42.

[0039] It should be noted that the elastic clamping rod 42 described in this embodiment is a prior art, and thus will not be described in detail here.

[0040] It should also be noted that the arc baffle 43 is respectively adapted to the outer dimensions of the outer arc side frame 21 and the inner arc bracket 22, and a semi-arc slot is provided on the surface of the arc baffle 43. One end of the elastic clamping rod 42 is located inside the semi-arc slot and is fixed to the inner wall of the semi-arc slot.

[0041] Specifically, in order to improve the protection effect, the device is provided with a protective plate frame 4, which can block the dust and stones falling from the inner wall of the tunnel. By blocking the stones, people can be effectively prevented from being injured. Since no stones fall on the ground, the ground is relatively flat, which is also convenient for equipment to move. By blocking the dust, dust inhalation can be reduced, which correspondingly improves the construction environment and has a good use effect.

[0042] When operating the protective plate frame 4, first press the elastic clamping rod 42 into the outer arc side frame 21 and the inner arc bracket 22 respectively, then embed the arc baffle 43 into the arc step portion 41, and then release the elastic clamping rod 42. After the elastic clamping rod 42 is extended, one end of the elastic clamping rod 42 is located in the semi-arc clamping groove and abuts and fixes with the inner wall of the semi-arc clamping groove, thereby supporting and limiting the arc baffle 43. The operation is simple and the use effect is good.

[0043] In one embodiment of the present invention, Figure 2 As shown, a threaded hole is formed on the inner wall of the arc-shaped slot 231 , and one end of the locking bolt 233 is threadedly connected to the inner wall of the threaded hole.

[0044] It should be noted that the threaded holes on the inner wall of the arc-shaped slot 231 described in this embodiment can be provided with three groups. The two groups of threaded holes at the innermost end and the outermost end are used to fix the arc-shaped connecting block 232 in an unconnected state, and the middle group of threaded holes is used to fix the arc-shaped connecting block 232 in a connected state, which has a good use effect. In order to facilitate the connection and check the position of the threaded holes, scale lines (not shown in the figure) are provided on the outside of the arc-shaped slot 231, and the scale lines can be used to know whether the locking bolt 233 is aligned with the threaded hole.

[0045] In one embodiment of the present invention, Figure 1 As shown, the surface of the support column seat 11 is provided with scale lines (not shown in the figure).

[0046] It should be noted that the scale lines (not shown in the figure) described in this embodiment are used to observe whether the heights of the support column seats 11 are in the same horizontal plane.

[0047] In summary, an auxiliary steel frame for excavating a tunnel transverse tunnel transition section in an embodiment of the utility model can stably support and protect the inner wall of the tunnel, has strong structural stability, does not affect the movement of other equipment when in use, and has good use effect. Through reasonable steel frame arrangement, the number of steel frames used can be reduced while ensuring the support effect, thereby reducing construction costs.

[0048] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0050] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present invention.

Claims

1. A tunnel horizontal tunnel transition section excavation auxiliary steel frame, characterized in that: It comprises a base assembly (1) and an arch support assembly (2), wherein: The base assembly (1) comprises a support column seat (11), an adjustment handle (12), an infrared emitter (13) and a fixed base (14), wherein: The support column seat (11) is equipped with a screw lifting mechanism, the adjustment handle (12) is rotatably connected to the surface of the support column seat (11) and is connected to one end of the screw lifting mechanism, the fixed base (14) is slidably connected to the bottom of the support column seat (11) and is connected to the other end of the screw lifting mechanism, and the infrared transmitter (13) is arranged on the surface of the support column seat (11); The arch support assembly (2) comprises an outer arc side frame (21), an inner arc support (22) and a quick-connect assembly (23), wherein: The outer arc side frame (21) is bolted to the top of the support column seat (11), and the inner arc bracket (22) is fixed to the end surface of the outer arc side frame (21) away from the top of the support column seat (11), and is connected to one end of the outer arc side frame (21) through the quick connection assembly (23); The outer arc-shaped side frame (21) is connected to the inner arc-shaped support frame (22) to form an arch frame for supporting the top wall of the tunnel.

2. The tunnel horizontal transition section excavation auxiliary steel frame according to claim 1 is characterized in that: The quick-connect assembly (23) comprises an arc-shaped slot (231), an arc-shaped connecting block (232) and a locking bolt (233), wherein: The arc-shaped slots (231) are respectively arranged on the surfaces of the outer arc-shaped side frame (21) and the inner arc-shaped support (22), and their positions are corresponding; The arc-shaped connecting block (232) is slidably connected to the inner wall of the arc-shaped slot (231), and is fixedly connected to the inner wall of the arc-shaped slot (231) via the locking bolt (233).

3. The tunnel horizontal transition section excavation auxiliary steel frame according to claim 1 is characterized in that: It also includes a connecting rod assembly (3), the connecting rod assembly (3) including a connecting end (31), a protective rod (32), a connecting clamping column (33) and a spring (34), wherein: The connecting end heads (31) are symmetrically threadedly connected to the surfaces of the outer arc-shaped side frame (21) and the inner arc-shaped support (22), and their positions are corresponding; One end of the connecting column (33) is slidably connected to the inner wall of the protection rod (32), and the spring (34) is fixedly connected between the inner wall of the protection rod (32); the other end of the connecting column (33) is located inside the connecting end (31) and is slidably connected to the inner wall of the connecting end (31).

4. The tunnel horizontal transition section excavation auxiliary steel frame according to claim 1 is characterized in that: It also includes a protective plate frame (4), the protective plate frame (4) including an arc-shaped step portion (41), an elastic clamping rod (42) and an arc-shaped baffle (43), wherein: The arc-shaped step portions (41) are symmetrically arranged on the surfaces of the outer arc-shaped side frame (21) and the inner arc-shaped support (22), and their positions are corresponding; The elastic clamping rod (42) is arranged on the surface of the arc-shaped step portion (41); The arc-shaped baffle (43) is arranged on the surface of the arc-shaped step portion (41) and is abutted and fixed to one end of the elastic clamping rod (42).

5. The tunnel horizontal transition section excavation auxiliary steel frame according to claim 2 is characterized in that: A threaded hole is provided on the inner wall of the arc-shaped slot (231), and one end of the locking bolt (233) is threadedly connected to the inner wall of the threaded hole.

6. The tunnel horizontal transition section excavation auxiliary steel frame according to claim 1 is characterized in that: The surface of the support column seat (11) is provided with scale lines.

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