Temporary supporting device in tunnel

Abstract

The utility model relates to the technical field of tunnel interior supporting, in particular to a temporary supporting device in a tunnel. Comprising vertical supporting columns which are symmetrically arranged on the two sides, vertical supports included in the vertical supporting columns on the two sides are symmetrically arranged, the upper portions of the corresponding vertical supports on the two sides are connected through long transverse supports, and the lower portions of the corresponding vertical supports on the two sides are connected with short transverse supports respectively; the top of the vertical support, the two ends of the long transverse support and the end, facing the tunnel segment, of the short transverse support are connected with rod end telescopic components correspondingly. The lower portions of the corresponding vertical supports on the two sides are connected through an openable cross rod, one end of the openable cross rod is rotationally connected with the vertical support on one side, and a rod end telescopic component is arranged at the other end of the openable cross rod. The tunnel structure can be effectively supported, movement of construction machinery in a tunnel cannot be hindered, meanwhile, the size of each support in the device can be reduced, and construction is convenient and flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel internal support, in particular to a temporary support device in a tunnel. Background Art

[0002] During the construction of underground tunnel projects, due to the changes in boundary conditions, it is often necessary to quickly provide internal support for the parts of the tunnel affected by external forces. Most of the existing internal supports of tunnels are formed by steel members with high strength and stiffness to form a steel skeleton to support the surrounding rock of the upper tunnel arch. However, in order to avoid affecting the movement of construction machinery inside the tunnel, the lower horizontal support is often cancelled, resulting in a lack of effective support on both sides of the tunnel.

[0003] In addition, most existing tunnel support structures increase safety margins by strengthening the steel frame model and cross-section to the greatest extent possible, and the support ends are supplemented by hydraulic oil rods, which makes temporary supports difficult to assemble and heavy, further increasing the use cost and lifting risk for on-site construction. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned defects of the prior art and propose a temporary support device in a tunnel, which can not only effectively support the tunnel structure, but also will not hinder the movement of construction machinery in the tunnel. At the same time, the size of each support in the device can be reduced, and the construction is convenient and flexible.

[0005] The technical solution of the utility model is: a temporary support device in a tunnel, comprising symmetrically arranged vertical support columns on both sides, wherein the vertical supports included in the vertical support columns on both sides are symmetrically arranged, wherein the upper parts of the vertical supports corresponding to the two sides are connected by long transverse supports, and the lower parts of the vertical supports corresponding to the two sides are respectively connected to short transverse supports;

[0006] The top of the vertical support, both ends of the long transverse support, and the end of the short transverse support facing the tunnel segment are respectively connected with rod-end telescopic members;

[0007] The lower parts of the vertical supports corresponding to the two sides are connected by an openable cross bar, one end of the openable cross bar is rotatably connected to the vertical support on one side, and the other end of the openable cross bar is provided with a rod end telescopic component.

[0008] In the utility model, the vertical support and the long transverse support, as well as the vertical support and the short transverse support are fixedly connected by connecting bolts respectively.

[0009] The vertical support and the long transverse support are fixedly connected via an oblique support, and two ends of the oblique support are fixedly connected to the vertical support and the long transverse support via connecting bolts respectively.

[0010] The bottom of the vertical support is connected with a guide wheel, and correspondingly, two horizontal slideways are arranged at the bottom of the tunnel segment, and the guide wheels slide in the horizontal slideways on both sides respectively.

[0011] The rod end telescopic member comprises:

[0012] The rod end sleeve is cylindrical, one end of which is fixedly connected to the end of the long transverse support, the end of the short transverse support, the end of the openable cross bar or the top of the vertical support through a rod end steel plate, and the other end is open;

[0013] A telescopic screw rod, wherein the telescopic screw rod is arranged in a rod end sleeve, and the telescopic screw rod and the rod end sleeve are threadedly engaged with each other;

[0014] The force transmission steel plate is fixedly connected to the end of the telescopic screw rod located outside the rod end sleeve, and a liner is fixed on the side of the force transmission steel plate facing the tunnel segment or the vertical support.

[0015] When the rod-end telescopic member contacts the inner wall of the tunnel segment, its force-transmitting steel plate is arc-shaped and fits the arc-shaped inner wall of the tunnel segment;

[0016] By rotating the telescopic screw, the length of the telescopic member at the rod end is adjusted to achieve lateral and vertical support for the tunnel segment.

[0017] When the rod-end telescopic member contacts the vertical support, its force-transmitting steel plate is in a flat plate shape and fits in with the vertical plane of the vertical support.

[0018] One end of the rod-end telescopic member is rotatably connected to the vertical support via a rotating shaft.

[0019] The beneficial effects of the utility model are:

[0020] (1) Through the long horizontal support, vertical support, short horizontal support and diagonal support in the present application, the entire support device structural system can be formed conveniently and quickly;

[0021] (2) The present application uses a rod-end telescopic member to achieve the tightening of the support device and the tunnel structure, thereby ensuring temporary support and reinforcing the tunnel; and the length of the rod-end telescopic member is adjustable, so that the device can be applied to tunnels of various sizes;

[0022] (3) By setting the openable cross bar, when the openable cross bar is located between the vertical supports on both sides and connects the vertical supports on both sides, the openable cross bar supports the vertical supports on both sides and transmits the force, thereby reducing the size of the vertical supports and the lateral supports, thus simplifying the device; when the openable cross bar is in the open state, the mobile machinery can pass between the vertical supports on both sides, and the opening and closing can be controlled according to the construction requirements;

[0023] (4) A guide wheel is provided at the bottom of the vertical support to facilitate the rapid movement of the entire support device;

[0024] (5) The entire device can be installed and dismantled outside the tunnel, overcoming the shortcomings of small assembly space and high manual labor in the tunnel. It can also be reused and is easy to install, dismantle and transport. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a main structural schematic diagram of the utility model;

[0026] Figure 2 It is a schematic diagram of the connection structure between the long horizontal support and the vertical support;

[0027] Figure 3 It is a structural schematic diagram of the rod end telescopic member;

[0028] Figure 4 It is a schematic diagram of the structure of the openable crossbar;

[0029] Figure 5 It is a schematic diagram of the structure of the moving machinery when it moves within the device.

[0030] In the figure: 1 long transverse support; 2 vertical support; 3 oblique support; 4 short transverse support; 5 openable cross bar; 6 rod end telescopic member; 601 force transmission steel plate; 602 rod end sleeve; 603 rod end steel plate; 604 telescopic screw; 605 gasket; 7 guide wheel; 8 connecting bolt; 9 rotating shaft; 10 tunnel segment; 11 moving machinery. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and understandable, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0032] The following description sets forth specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in a variety of other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] like Figure 1 As shown, the temporary support device in the tunnel is arranged in the tunnel segment 10, and the support of the tunnel during the tunnel construction is achieved through the temporary support device.

[0034] The temporary support device in the tunnel described in the utility model includes two columns of vertical supports symmetrically arranged along the length direction of the tunnel segment, each column of vertical supports includes a plurality of vertical supports 2 arranged at intervals, and the vertical supports included in the two columns are symmetrically arranged. In this embodiment, according to the different left and right positions, the two columns of vertical supports are defined as the left vertical support column and the right vertical support column. The vertical supports included in the left vertical support column and the vertical supports included in the right vertical support column are symmetrically arranged.

[0035] The top of the vertical support 2 is provided with a rod end telescopic member 6, through which the contact and force transmission between the vertical support 2 and the tunnel segment 10 are realized, and the vertical direction support of the tunnel segment and the tunnel is realized. The bottom of the vertical support 2 is provided with a guide wheel 7, which can move along the inner wall of the tunnel segment 10. The guide wheel 7 can realize the movement of the entire device in the tunnel segment, which is convenient for placing the device into the tunnel segment or taking the device out of the tunnel segment. In this embodiment, the bottom of the inner wall of the tunnel segment 10 is provided with two horizontal slides arranged along the length direction of the tunnel, and the guide wheels 7 at the bottom of the vertical support on both sides can slide in the horizontal slides on both sides respectively.

[0036] The vertical supports in the left vertical support column are connected to the corresponding vertical supports in the right vertical support column through transverse supports. In the present application, the vertical supports arranged correspondingly on both sides are connected through several transverse supports, and the transverse supports are arranged at intervals along the vertical direction of the vertical supports.

[0037] In this embodiment, the upper parts of the corresponding vertical supports 2 on both sides are fixedly connected by a long horizontal support 1. Figure 2 As shown, the long transverse support 1 is fixedly connected to the vertical support 2 by connecting bolts 8. Since the length of the long transverse support 1 is relatively long, in order to improve the stability of the connection between the vertical support 2 and the long transverse support 1, an oblique support 3 is further connected between the vertical support 2 and the long transverse support 1, and the two ends of the oblique support 3 are fixedly connected to the long transverse support 1 and the vertical support 2 respectively by connecting bolts.

[0038] Rod end telescopic members 6 are respectively provided at both ends of the long transverse support 1 in the horizontal direction, and the rod end telescopic members 6 are used to achieve contact and force transmission between the long transverse support 1 and the inner wall of the tunnel segment 10 .

[0039] The lower parts of the corresponding vertical supports 2 on both sides are respectively fixedly connected to the short transverse supports 4. One end of the short transverse support 4 is fixedly connected to the vertical support by connecting bolts, and the other end of the short transverse support 4 is connected to a rod end telescopic member 6, through which the short transverse support 4 and the inner wall of the tunnel segment 10 are contacted and force is transmitted.

[0040] In this embodiment, the rod end telescopic member 6 disposed at the top of the vertical support is taken as an example to specifically introduce the structure of the rod end telescopic member 6. Figure 3 As shown, the rod end telescopic member 6 includes a rod end sleeve 602 and a telescopic screw 604 disposed in the rod end sleeve 602. The rod end sleeve 602 is cylindrical, one end of which is fixedly connected to the top end of the vertical support through a rod end steel plate 603, and the other end of the rod end sleeve is open, and the telescopic screw 604 passes through the opening and extends into the rod end sleeve 602.

[0041] The outer surface of the telescopic screw 604 is provided with an external thread, and the corresponding inner surface of the rod end sleeve is provided with an internal thread, and the external thread of the telescopic screw 604 and the internal thread of the rod end sleeve 603 are mutually engaged. Therefore, in the process of rotating the telescopic screw 604, the telescopic screw 604 also moves along the axial direction of the rod end sleeve. At this time, the relative position between the telescopic screw 604 and the rod end sleeve 602 changes, thereby realizing the telescopic screw 604 in the rod end sleeve 602 Telescopic extension and contraction.

[0042] One end of the telescopic screw 604 is arranged in the rod end sleeve, and the other end of the telescopic screw 604 is fixed with a force transmission steel plate 601. The end face of the force transmission steel plate 601 facing the tunnel segment is an arc-shaped end face, and a gasket 605 is fixed at the arc-shaped end face. The gasket 605 is supported by a material with a certain elasticity, such as rubber. In the actual construction process, by adjusting the length of the telescopic screw 604, the vertical support 2 is vertically tightened against the tunnel segment. During the tightening process, the gasket 605 is deformed to a certain extent under the action of the tightening force. By reducing the size of the gasket, the error between the curvature of the force transmission steel plate 601 and the actual curvature of the tunnel segment can be eliminated, ensuring the full fit between the force transmission steel plate 601 and the inner wall of the tunnel segment 10, reducing the error, and ensuring that the force on the tunnel segment is uniform.

[0043] In the present application, a rod end telescopic member is also provided between the end of the long transverse support 1 and the inner wall of the adjacent tunnel segment, and between the end of the short transverse support 4 and the inner wall of the adjacent tunnel segment. By adjusting the length of the rod end telescopic member, the end of the long transverse support 1 and the end of the short transverse support 4 are respectively pressed against the tunnel segment 10, generating a horizontal pressing force on the tunnel segment 10, thereby realizing horizontal support of the tunnel segment and the tunnel.

[0044] The lower parts of the corresponding vertical supports on both sides are connected by an openable cross bar 5. One end of the openable cross bar 5 is rotatably connected to the vertical support on one side, and the other end of the openable cross bar 5 is provided with a rod end telescopic member 6, through which the contact with the adjacent vertical support and the tightening of the vertical support are achieved.

[0045] The structure of the rod end telescopic member 6 is as described above. In this embodiment, one end of the rod end telescopic member 6 is fixedly connected to the openable cross bar 5, and the other end of the rod end telescopic member 6 is in contact with the adjacent vertical support. The force transmission steel plate of the rod end telescopic member 6 in contact with the vertical support is flat to achieve the fit between the rod end telescopic member 6 and the vertical support. By adjusting the length of the rod end telescopic member 6, the vertical support in contact with it is tightened. At this time, the connection and force transmission of the vertical supports on both sides are achieved through the openable cross bar 5.

[0046] In this embodiment, one end of the openable cross bar 5 is rotatably connected to the vertical support via a rotating shaft 9. During the rotation of the rotating shaft 9, when the openable cross bar 5 is rotated to be located between the corresponding vertical supports on both sides, the length of the rod end telescopic member 6 is adjusted to achieve the connection of the vertical supports on both sides; when the openable cross bar 5 is rotated to be parallel to the length direction of the tunnel, the lower parts of the two vertical supports are in an open state, and a moving vehicle, a shield machine or other moving machinery 11 can smoothly pass between the two vertical supports. Figure 5 shown.

[0047] The specific method of using the tunnel support device described in the utility model is as follows. First, assemble the long transverse support 1, the vertical support 2, the short transverse support 4 and the oblique support 3, and push the support device into the tunnel segment 10 through the guide wheel at the bottom. Then, adjust the rod end telescopic components 6 at the two ends of the long transverse support 1, the top of the vertical support 2, and the end of the short transverse support 4 respectively: rotate the telescopic screw 604 to adjust the length of the rod end telescopic component 6 so that the rod end telescopic component 6 can be pressed against the inner wall of the tunnel segment. At this time, the steel plate of the rod end component 6 is tightly fitted with the inner wall of the tunnel segment, realizing the contact between the support device and the tunnel segment, and the transmission of force between the support device and the tunnel segment, so that the support device supports the tunnel segment. When a working machine needs to pass through the tunnel segment, adjust the length of the rod end telescopic component 6 at the end of the openable cross bar 5, and drive the openable cross bar 5 to rotate to the length direction of the tunnel through the rotating shaft 9, and the working machine can pass between the vertical supports on both sides. After the working machine passes, the openable cross bar 5 is rotated to rotate between the vertical supports on both sides again, and the openable cross bar 5 is pressed between the two vertical supports again through the rod end telescopic member 6 at the end of the openable cross bar 5. At this time, the openable cross bar 5 plays the role of connecting the vertical supports on both sides and transmitting the force. The guide wheel 8 at the bottom of the device can be flexibly moved.

[0048] The above is a detailed introduction to the temporary support device in the tunnel provided by the utility model. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model. The above description of the disclosed embodiments enables professional and technical personnel in this field to implement or use the utility model. Various modifications to these embodiments will be obvious to professional and technical personnel in this field, and the general principles defined in this article can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown in this article, but will conform to the widest range consistent with the principles and novel features disclosed in this article.

Claims

1. A temporary support device in a tunnel, comprising symmetrically arranged vertical support columns on both sides, wherein the vertical supports included in the vertical support columns on both sides are symmetrically arranged, characterized in that: The upper parts of the vertical supports corresponding to the two sides are connected by long transverse supports, and the lower parts of the vertical supports corresponding to the two sides are connected to short transverse supports respectively; The top of the vertical support, both ends of the long transverse support, and the end of the short transverse support facing the tunnel segment are respectively connected with rod-end telescopic members; The lower parts of the vertical supports corresponding to the two sides are connected by an openable cross bar, one end of the openable cross bar is rotatably connected to the vertical support on one side, and the other end of the openable cross bar is provided with a rod end telescopic member.

2. The temporary support device in the tunnel according to claim 1, characterized in that: The vertical support and the long transverse support, as well as the vertical support and the short transverse support are fixedly connected by connecting bolts respectively.

3. The temporary support device in a tunnel according to claim 1, characterized in that: The vertical support and the long transverse support are fixedly connected via an oblique support, and two ends of the oblique support are fixedly connected to the vertical support and the long transverse support via connecting bolts respectively.

4. The temporary support device in a tunnel according to claim 1, characterized in that: The bottom of the vertical support is connected with a guide wheel, and correspondingly, two horizontal slideways are arranged at the bottom of the tunnel segment, and the guide wheels slide in the horizontal slideways on both sides respectively.

5. The temporary support device in a tunnel according to claim 1, characterized in that: The rod end telescopic member comprises: The rod end sleeve is cylindrical, one end of which is fixedly connected to the end of the long transverse support, the end of the short transverse support, the end of the openable cross bar, or the top of the vertical support through a rod end steel plate, and the other end is open; A telescopic screw rod, wherein the telescopic screw rod is arranged in a rod end sleeve, and the telescopic screw rod and the rod end sleeve are threadedly engaged with each other; The force transmission steel plate is fixedly connected to the end of the telescopic screw rod located outside the rod end sleeve, and a liner is fixed on the side of the force transmission steel plate facing the tunnel segment or the vertical support.

6. The temporary support device in a tunnel according to claim 5, characterized in that: When the rod-end telescopic member contacts the inner wall of the tunnel segment, its force-transmitting steel plate is arc-shaped and fits the arc-shaped inner wall of the tunnel segment; By rotating the telescopic screw, the length of the telescopic member at the rod end is adjusted to achieve lateral and vertical support for the tunnel segment.

7. The temporary support device in a tunnel according to claim 5, characterized in that: When the rod-end telescopic member contacts the vertical support, its force-transmitting steel plate is in a flat plate shape and fits in with the vertical plane of the vertical support.

8. The temporary support device in a tunnel according to claim 1, characterized in that: One end of the rod-end telescopic member is rotatably connected to the vertical support via a rotating shaft.

Images