Slope tunnel portal construction expansion platform

Abstract

The utility model discloses a slope tunnel portal construction expansion platform which comprises corrugated steel arches arranged in a left-right spaced mode, connecting plates protruding outwards are arranged on the front sides and the rear sides of the corrugated steel arches, and first connecting holes are formed in the connecting plates. The connecting plates on the corresponding sides of the two front-back adjacent corrugated steel arches are attached, and the first connecting holes in the two connecting plates are aligned. The bottom of the base plate is borne by the arch top of the left corrugated steel and the arch top of the right corrugated steel, first side plates are arranged on the front side and the rear side of the base plate, second connecting holes are formed in the first side plates, the second connecting holes are aligned with the first connecting holes in the connecting plates on the corresponding sides, and fasteners are installed in the second connecting holes and the first connecting holes in the connecting plates on the corresponding sides. The extending platform plate is detachably installed above the base plate, and the bottom of the extending platform plate makes contact with the top of the first side edge plate. The extension platform plate is detachably mounted above the base plate to form an extension platform, so that the construction platform area of a tunnel portal is increased, and the tunnel secondary lining trolley is convenient to assemble and other constructions of the tunnel portal are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, and in particular, to a construction extension platform for a slope tunnel entrance. Background Technology

[0002] When constructing tunnels in mountainous or hilly areas, the tunnel entrance is often located on a slope, with complex terrain and harsh construction conditions. Furthermore, during tunnel construction, to facilitate the assembly of the tunnel lining trolley, it is usually assembled on an open platform outside the tunnel. However, traditional construction platforms at the tunnel entrance on slopes are typically narrow and cannot accommodate the assembly of the tunnel lining trolley. The narrowness of the platform also hinders other construction operations. Constructing a traditional construction platform on a slope, however, is quite cumbersome for assembly. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a construction expansion platform for slope tunnel entrances.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A construction extension platform for a slope tunnel entrance includes: corrugated steel arches spaced apart on the left and right sides, with outwardly protruding connecting plates on the front and rear sides of each corrugated steel arch, each connecting plate having a first connecting hole; the connecting plates on corresponding sides of two adjacent corrugated steel arches fitting together and the first connecting holes on the two connecting plates aligning; a base plate, its bottom supported by the tops of the left and right corrugated steel arches, with first side plates on the front and rear sides, each first side plate having a second connecting hole, the second connecting hole aligning with the first connecting hole on the corresponding side connecting plate and fitted with fasteners; and an extension platform plate, detachably installed above the base plate, its bottom contacting the top of the first side plates.

[0006] Furthermore, the corrugated steel arch is provided with arch foot plates on both the left and right sides at the bottom, and the arch foot plates are provided with anchoring holes.

[0007] Furthermore, multiple corrugated steel arches, base plates, and extension platform plates are arranged in the front-to-back direction, and the bottom height of the corrugated steel arches and the corresponding arch foot plate height gradually decrease from back to front.

[0008] Furthermore, a support rod is provided at the bottom center of the base plate, and the bottom of the support rod contacts the corresponding arch foot plate below.

[0009] Furthermore, the first connecting hole is an oblong hole.

[0010] Furthermore, the extension platform plate has connecting strips on the left and right sides at the bottom, and the base plate has upward-protruding second side plates on the left and right sides. The connecting strips and the second side plates are connected and fixed by fasteners.

[0011] Furthermore, the base plate is provided with a reinforcing rib in the middle, and the upper end of the reinforcing rib is attached to the bottom of the extension platform plate.

[0012] Furthermore, the second side plate is provided with a third connecting hole, and the connecting strip is provided with a through hole corresponding to the third connecting hole. The outer side of the connecting strip is fitted with the second side plate, and a nut is fixedly connected to the inner side. A bolt is passed through the third connecting hole, and the bolt is threadedly connected to the nut.

[0013] Furthermore, the front and rear sides of the connecting strip are fitted with the first side plates on the front and rear sides.

[0014] Furthermore, the connecting strip is provided with a clearance notch to avoid the reinforcing rib.

[0015] This utility model has the following beneficial effects:

[0016] By using corrugated steel arches as a support structure, the corrugated steel arches can adapt to the undulating terrain of the slope. Connecting plates and fasteners ensure a stable connection between adjacent corrugated steel arches, guaranteeing the overall stability of the platform and meeting the construction requirements of the tunnel entrance on the slope. The base plate aligns with the first connecting hole on the corrugated steel arch via the second connecting hole on the first side plate and is secured with fasteners, enabling quick assembly and disassembly. Furthermore, the splicing of two corrugated steel arches can be achieved by fasteners, allowing the base plate and two adjacent corrugated steel arches to be joined, simplifying the installation process. An extension platform plate can be detachably installed above the base plate, forming an extended platform to increase the construction platform area at the tunnel entrance, facilitating the assembly of the tunnel lining trolley and other construction work at the tunnel entrance.

[0017] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0020] Figure 2 yes Figure 1 A schematic diagram of the decomposed state structure;

[0021] Figure 3 This is a schematic diagram of the exploded structure of the base plate and the extension platform plate;

[0022] Figure 4 This is a sectional view of the connection structure between the base plate and the corrugated steel arch;

[0023] Figure 5 yes Figure 4 Enlarged view of point A;

[0024] Figure 6 This is a structural schematic diagram of the extended platform board;

[0025] Figure 7 This is a structural schematic diagram of the usage state of an embodiment of this utility model.

[0026] Legend:

[0027] Tunnel entrance 101, slope 102;

[0028] Corrugated steel arch 100, connecting plate 110, first connecting hole 111, arch foot plate 120, anchor hole 121;

[0029] Base plate 200, first side plate 210, second connecting hole 211, fastener 220, support rod 230, second side plate 240, third connecting hole 241, reinforcing rib 250;

[0030] Extended platform plate 300, connecting strip 310, clearance notch 311, through hole 312, nut 313. Detailed Implementation

[0031] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] Please refer to Figure 1 and Figure 2 The present invention provides a preferred embodiment of a slope tunnel entrance construction extension platform, comprising a corrugated steel arch 100, a base plate 200, and an extension platform plate 300.

[0036] Corrugated steel arches 100 are spaced apart on the left and right sides. Corrugated steel arches 100 have outwardly protruding connecting plates 110 on their front and rear sides. The connecting plates 110 have first connecting holes 111. The connecting plates 110 on the corresponding sides of two adjacent corrugated steel arches 100 are fitted together and the first connecting holes 111 on the two connecting plates 110 are aligned. Thus, the two adjacent corrugated steel arches 100 can be fixed by fitting the connecting plates 110 together and installing fasteners on the aligned first connecting holes 111, thereby realizing the splicing of corrugated steel arches 100. The number of corrugated steel arches 100 arranged in front and behind can be set according to actual needs.

[0037] The base plate 200 rests on the top of the corrugated steel arches 100 on the left and right sides. The base plate 200 has first side plates 210 on its front and rear sides. Each first side plate 210 has a second connecting hole 211, which aligns with the first connecting hole 111 on the corresponding side connecting plate 110 and is fitted with a fastener 220. For example... Figure 4 and Figure 5As shown, at the splicing position of the two corrugated steel arches 100, the first connecting holes 111 on the two connecting plates 110 are aligned with the second connecting holes 211 on the first side plates 210 on the front and rear base plates 200, and fasteners 220 are installed. This allows for the simultaneous connection and fixation of the two connecting plates 110 and the two first side plates 210, i.e., the connection and fixation of the two corrugated steel arches 100 and the two base plates 200. The fasteners 220 can achieve the connection and fixation of multiple structures, reducing the number of fasteners and simplifying the installation steps. The fasteners 220 are bolts and nuts. Of course, the outermost connecting plate 110 is aligned with the hole of one first side plate 210 and fasteners 220 are installed, achieving the connection and fixation of only one corrugated steel arch 100 and one base plate 200. The extension platform plate 300 is detachably installed above the base plate 200, and the bottom of the extension platform plate 300 contacts the top of the first side plate 210, thereby providing support.

[0038] This utility model provides a construction extension platform for a slope tunnel entrance. A corrugated steel arch 100 serves as the supporting structure, adapting to the undulating terrain. Adjacent corrugated steel arches 100 are securely connected via connecting plates 110 and fasteners 220, ensuring overall platform stability and meeting the construction requirements of the slope tunnel entrance 101. The base plate 200 aligns with the first connecting hole 111 on the corrugated steel arch 100 via a second connecting hole 211 on the first side plate 210 and is fixed with fasteners 220, enabling quick assembly and disassembly. Furthermore, the splicing of two corrugated steel arches 100 can be achieved using fasteners 220, simplifying the installation process. An extension platform plate 300 is detachably installed above the base plate 200, forming an extension platform to increase the construction platform area at the tunnel entrance, facilitating the assembly of the tunnel lining trolley and other construction work at the tunnel entrance.

[0039] Reference Figure 1 and Figure 2 In some embodiments of this utility model, the bottom of both sides of the corrugated steel arch 100 is provided with arch foot plates 120, and the arch foot plates 120 are provided with anchor holes 121. Anchor rods are inserted into the anchor holes 121 to anchor the corrugated steel arch 100 in the soil layer of the slope.

[0040] Reference Figure 1 and Figure 2 In a further embodiment of this utility model, multiple corrugated steel arches 100, base plates 200, and extension platform plates 300 are arranged in a front-to-back direction, and the bottom height of the corrugated steel arches 100 and the height of the corresponding arch foot plates 120 gradually decrease from back to front. Thus, the construction platform is expanded by multiple extension platform plates 300, the number of which can be selected according to actual needs. Figure 7As shown, the slope 102 extends forward and downward to accommodate the changes in the bottom height of the corrugated steel arch 100 and the height of the arch foot plate 120. It can be understood that, in order to support stability, the slope 102 will excavate steps corresponding to the arch foot plate 120 to place the arch foot plate 120.

[0041] Reference Figure 1 and Figure 2 In a further embodiment of this utility model, a support rod 230 is provided at the bottom center of the base plate 200. The bottom of the support rod 230 contacts the corresponding arch foot plate 120 below, thereby supporting the suspended area in the middle of the base plate 200, improving the load and load-bearing capacity of the middle of the base plate 200, and improving the structural stability.

[0042] In a further embodiment of this utility model, the first connecting hole 111 is an oblong hole, which facilitates hole alignment and installation.

[0043] Reference Figure 3 and Figure 6 In a further embodiment of this utility model, the bottom left and right sides of the extension platform plate 300 are provided with connecting strips 310, and the left and right sides of the base plate 200 are provided with upwardly protruding second side plates 240. The connecting strips 310 and the second side plates 240 are connected and fixed by fasteners, thereby realizing the connection and fixation of the extension platform plate 300. The left and right sides of the base plate 200 are not restricted by the structure of the connecting plate 110, and the left and right sides of the base plate 200 are open, which facilitates the installation of fasteners.

[0044] Reference Figure 3 and Figure 6 In a further embodiment of the present invention, a reinforcing rib 250 is provided in the middle of the base plate 200, and the upper end of the reinforcing rib 250 is attached to the bottom of the extension platform plate 300, thereby improving the structural strength of the base plate 200 and improving the support stability of the extension platform plate 300.

[0045] Reference Figure 3 and Figure 6 In a further embodiment of this utility model, the second side plate 240 is provided with a third connecting hole 241, and the connecting strip 310 is provided with a through hole 312 corresponding to the third connecting hole 241. The outer side of the connecting strip 310 fits against the second side plate 240 to achieve fitting and positioning. A nut 313 is fixedly connected to the inner side of the connecting strip 310. The nut 313 is welded to the connecting strip 310. A bolt is passed through the third connecting hole 241 and the bolt is threadedly connected to the nut 313, thereby achieving the connection and fixation of the extension platform plate 300 and the base plate 200, and allowing for disassembly and reuse.

[0046] Reference Figure 3 and Figure 6In a further embodiment of this utility model, the front and rear sides of the connecting strip 310 are fitted with the first side plate 210 on the front and rear sides, thereby achieving positioning in the front and rear directions.

[0047] Reference Figure 3 and Figure 6 In a further embodiment of the present invention, the connecting strip 310 is provided with a clearance notch 311 to avoid the reinforcing rib 250, thereby avoiding structural interference.

[0048] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A construction expansion platform for a slope tunnel entrance, characterized in that, include: Corrugated steel arches (100) are spaced apart on the left and right sides. The corrugated steel arches (100) are provided with outwardly protruding connecting plates (110) on the front and rear sides. The connecting plates (110) are provided with first connecting holes (111). The connecting plates (110) on the corresponding sides of two adjacent corrugated steel arches (100) are fitted together and the first connecting holes (111) on the two connecting plates (110) are aligned. The base plate (200) is supported at the bottom by the top of the corrugated steel arches (100) on the left and right sides. The front and rear sides are provided with first side plates (210). The first side plates (210) are provided with second connecting holes (211). The second connecting holes (211) are aligned with the first connecting holes (111) on the corresponding side connecting plates (110) and fasteners (220) are installed thereon. The extension platform plate (300) is detachably mounted above the base plate (200), with its bottom contacting the top of the first side plate (210).

2. The slope tunnel entrance construction expansion platform according to claim 1, characterized in that, The corrugated steel arch (100) is provided with arch foot plates (120) on both the left and right sides at the bottom, and the arch foot plates (120) are provided with anchor holes (121).

3. The slope tunnel entrance construction expansion platform according to claim 2, characterized in that, The corrugated steel arch (100), base plate (200) and extension platform plate (300) are arranged in multiple ways along the front-to-back direction, and the bottom height of the corrugated steel arch (100) and the height of the corresponding arch foot plate (120) gradually decrease from back to front.

4. The slope tunnel entrance construction expansion platform according to claim 2, characterized in that, The base plate (200) has a support rod (230) at the bottom center, and the bottom of the support rod (230) contacts the corresponding arch foot plate (120) below.

5. The slope tunnel entrance construction expansion platform according to claim 1, characterized in that, The first connecting hole (111) is a waist-shaped hole.

6. The slope tunnel entrance construction expansion platform according to claim 1, characterized in that, The extension platform plate (300) has connecting strips (310) on the left and right sides of its bottom, and the base plate (200) has second side plates (240) that protrude upwards on the left and right sides. The connecting strips (310) and the second side plates (240) are connected and fixed by fasteners.

7. The slope tunnel entrance construction expansion platform according to claim 6, characterized in that, The base plate (200) is provided with a reinforcing rib (250) in the middle, and the upper end of the reinforcing rib (250) is attached to the bottom of the extension platform plate (300).

8. The slope tunnel entrance construction expansion platform according to claim 6, characterized in that, The second side plate (240) is provided with a third connecting hole (241), and the connecting strip (310) is provided with a through hole (312) corresponding to the third connecting hole (241). The outer side of the connecting strip (310) is fitted with the second side plate (240), and a nut (313) is fixedly connected to the inner side. A bolt is passed through the third connecting hole (241), and the bolt is threadedly connected to the nut (313).

9. The slope tunnel entrance construction expansion platform according to claim 8, characterized in that, The front and rear sides of the connecting strip (310) are attached to the first side plate (210) on the front and rear sides.

10. The slope tunnel entrance construction expansion platform according to claim 6, characterized in that, The connecting strip (310) is provided with a clearance notch (311) to avoid the reinforcing rib (250).

Images