Multifunctional temporary supporting steel arch

Abstract

The utility model discloses a multifunctional temporary supporting steel arch, and belongs to the technical field of tunnel construction. The temporary supporting steel arch comprises a front support and a rear support, the rear side of the front support is movably connected with a first operation platform with the adjustable height, the front side of the rear support is movably connected with a second operation platform with the adjustable height, and a connecting rib is detachably arranged between the first operation platform and the second operation platform. The front support and the rear support are further connected through a second connecting rod, and the second connecting rod is provided with a third connecting rod used for supporting the first operation platform and the second operation platform. The two operation platforms are arranged between the front support and the rear support and used for standing operation of constructors, the front support and the rear support are connected through the two operation platforms and the connecting ribs between the two operation platforms, and the strength and stability of the temporary supporting steel arch are enhanced; the height of the operation platform is adjustable, and in addition, the height of the temporary supporting steel arch frame is adjusted, so that the position can be conveniently moved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a multifunctional temporary supporting steel arch frame. Background Art

[0002] The tunnel face of a small-section tunnel has collapsed, and the steel arch near the face is gradually deforming. Analysis revealed that the surrounding rock in the fault fracture zone revealed by excavation is extremely unstable, and the arch and side walls are prone to localized block loss or overall collapse. The softened carbonaceous shale, under the impact of water, forms a silt-like material that spreads throughout the excavated tunnel. Based on on-site investigations and analysis, as well as preliminary survey data, it is speculated that a large-scale fault zone will soon be encountered ahead of the tunnel face. In view of these phenomena, this section requires landslide treatment and strengthened support.

[0003] When strengthening the support, it is necessary to remove the deformed steel arch frames that have been deformed in the initial support one by one. When removing the deformed steel arch frames, temporary supports need to be set up at the planned demolition site before they can be removed to avoid tunnel collapse when removing the deformed steel arch frames. However, the existing tunnel support spacing is generally 0.6, 0.8, 1, and 1.2 meters. After a collapse occurs, the construction party will generally re-install temporary supports at intervals of 0.6, 0.8, 1, and 1.2 meters. This temporary support takes a long time to construct on site, and there are certain safety risks in the construction process. Moreover, this temporary support cannot be moved, and the height is not easy to adjust at will. Therefore, it cannot be quickly adjusted according to the actual situation of the construction site during the construction process. In addition, after the temporary support is laid out, the deformed steel arch frames need to be dismantled, and another operating platform needs to be set up, which increases the workload. Summary of the Invention

[0004] In response to the above-mentioned problems, the utility model aims to provide a multifunctional temporary support steel arch frame, in which two operating platforms are set between the front support and the rear support for construction workers to stand and operate, and the front support and the rear support are connected by the two operating platforms and the connecting ribs therebetween to enhance the strength and stability of the temporary support steel arch frame; and the height of the operating platform is adjustable. In addition, the height adjustment of the temporary support steel arch frame can also facilitate the movement of the position.

[0005] In order to achieve the above purpose, the technical solutions adopted by this utility model are as follows:

[0006] A multifunctional temporary support steel arch frame includes a front support and a rear support. The rear side of the front support is movably connected to a first height-adjustable operating platform, and the front side of the rear support is movably connected to a second height-adjustable operating platform. The first operating platform and the second operating platform are detachably connected.

[0007] Furthermore, the front support includes a steel arch frame body, and the bottoms of both ends of the steel arch frame body are connected to support rods.

[0008] Furthermore, a first connecting rod is detachably connected between the two support rods, and the first operating platform is detachably connected to the first connecting rod.

[0009] Furthermore, a plurality of first mounting holes for mounting the first connecting rod are provided on the support rod along the axial direction.

[0010] Furthermore, the connection mode between the rear support and the second operating platform is exactly the same as the connection mode between the front support and the first operating platform.

[0011] Furthermore, a second connecting rod is detachably connected between the two supporting rods corresponding to each other of the front support and the rear support, and a third connecting rod for supporting the first operating platform and the second operating platform is detachably connected to the second connecting rod.

[0012] Furthermore, a second mounting hole for mounting the second connecting rod is provided on the support rod, and the first mounting hole and the second mounting hole are staggered vertically.

[0013] Furthermore, an adjusting screw is connected to the interior of the support rod along the axial direction;

[0014] The adjusting screw rod passes through the bottom of the supporting rod, and an adjusting nut is threadedly connected to the adjusting screw rod, and the adjusting nut is located below the supporting rod.

[0015] Furthermore, a moving wheel is provided at the bottom of the adjusting screw.

[0016] The beneficial effects of the present invention are as follows: compared with the prior art, the improvement of the present invention is that:

[0017] 1. The temporary support steel arch frame of the present invention utilizes a front support and a rear support that cooperate with each other. By providing a first operating platform on the front support and a second operating platform on the rear support, construction workers can conveniently stand on the operating platforms to perform other construction operations. Furthermore, the first and second operating platforms, as well as the connecting ribs therebetween, can tighten the connection between the front and rear supports, thereby increasing the strength of the entire temporary support steel arch frame. Furthermore, the connecting ribs can also fill the gap between the first and second operating platforms, preventing construction workers from falling through the gap.

[0018] 2. The first operating platform of the utility model is detachably connected to the first connecting rod. Both ends of the first connecting rod are provided with a first threaded section, and the first threaded section is provided with a first fastening nut. By adjusting the position of the first fastening nut on the first threaded section, the first connecting rod can be stably fixed on a front support of any width (any front support with different distances between the two support rods).

[0019] 3. The utility model connects the support rods corresponding to the front support and the rear support through a second connecting rod. By adjusting the position of the second fastening nut on the second threaded segment, the distance between the front support and the rear support can be adjusted. Moreover, a third connecting rod with an adjustable position is provided on the second connecting rod, which can support the first operating platform and the second operating platform, thereby ensuring the stability of the first operating platform and the second operating platform.

[0020] 4. The utility model has an adjusting screw threadedly connected to the bottom of the support rod, and an adjusting nut is connected to the adjusting screw, which can adjust the height of the steel arch frame body so that the steel arch frame body can fit closely with the arch top, thereby improving the support effect; a moving wheel is provided at the bottom of the adjusting thread for easy movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a side view of the temporary support steel arch structure in Example 1 of the present utility model.

[0022] Figure 2 For this utility model Figure 1 A partial enlarged view of the structure of part A.

[0023] Figure 3 This is a front view of the front support structure in Example 1 of the present utility model.

[0024] Figure 4 This is a top view of the temporary support steel arch structure in Example 1 of the present utility model.

[0025] Figure 5 This is a side view of the first operating platform structure in Example 1 of the present utility model.

[0026] Figure 6 This is the front view of the front support structure in Example 2 of the present utility model.

[0027] Among them: 1-front support, 101-steel arch frame body, 102-support rod, 1021-first mounting hole, 1022-second mounting hole, 103-adjusting screw, 104-adjusting nut, 105-moving wheel, 2-rear support, 3-first operating platform, 4-second operating platform, 5-first connecting rod, 501-first threaded segment, 502-first fastening nut, 6-arc-shaped snap ring, 7-second connecting rod, 701-second threaded segment, 702-second fastening nut, 703-support hole, 8-third connecting rod, 9-connecting rib. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0029] Example 1:

[0030] The first embodiment provides a multifunctional temporary support steel arch frame, as shown in the attached Figure 1-5 As shown, the temporary support steel arch frame includes a front support 1 and a rear support 2. The front support 1 and the rear support 2 have the same structure. The rear side of the front support 1 is movably connected to a first operating platform 3, and the front side of the rear support 2 is movably connected to a second operating platform 4. The first operating platform 3 and the second operating platform 4 are detachably connected, and the first operating platform 3 and the second operating platform 4 are used for construction workers to stand, so as to facilitate other operations such as dismantling after the temporary support is arranged.

[0031] Specifically, taking the front support 1 as an example, the front support 1 includes a steel arch frame body 101, and the steel arch frame body 101 adopts an I-beam structure. The bottoms of both ends of the steel arch frame body 101 are connected to support rods 102. A first connecting rod 5 is movably connected between the two support rods 102, and one end of the first operating platform 3 is detachably connected to the first connecting rod 5. More specifically, each of the support rods 102 is provided with a plurality of first mounting holes 1021 connected to the left and right along the axial direction, and the first mounting holes 1021 on the two support rods 102 correspond to each other, and both ends of the first connecting rod 5 are provided with a first threaded section 501, and the first threaded section 501 is threadedly connected with a first fastening nut 502, and the first operating platform 3 is provided with an arc-shaped retaining ring 6 at one end close to the first connecting rod 5. According to the required height of the first operating platform 3, insert the first connecting rod 5 into the first mounting hole 1021 of the corresponding height. According to the distance between the two support rods 102, screw the first fastening nut 502 onto the first threaded segment 501 to fix the first connecting rod 5, and then clamp the arc-shaped retaining ring 6 at the end of the first operating platform 3 onto the first connecting rod 5.

[0032] The connection mode between the rear support 2 and the second operating platform 4 is exactly the same as the connection mode between the front support 1 and the first operating platform 3 .

[0033] Furthermore, two second connecting rods 7 are detachably connected between the front support 1 and the rear support 2. These second connecting rods 7 connect the corresponding support rods 102 on the front and rear supports 102. Each support rod 102 is provided with a plurality of second mounting holes 1022 that connect front to back. These second mounting holes 1022 are used to mount the second connecting rods 7. The first mounting holes 1021 and the second mounting holes 1022 on each support rod 102 are staggered vertically. Each end of the second connecting rod 7 is provided with a second threaded section 701, on which a second fastening nut 702 is threadedly connected. Based on the installation height of the first connecting rod 5, the front support 1 and the rear support 2 are connected together via the second connecting rod 7 below the first connecting rod 5. At this time, the first operating platform 3 and the second operating platform 4 are both located above the second connecting rod 7. It should be noted that two second fastening nuts 702 are provided on the second threaded sections 701 at each end of the second connecting rod 7 to prevent the front support 1 and the rear support 2 from moving toward each other.

[0034] To support the end of the first operating platform 3 away from the front support 1 and the end of the second operating platform 4 away from the rear support 2, a plurality of support holes 703 are defined in the middle of the second connecting rod 7. Third connecting rods 8 are threadedly connected to the internal threads of these support holes 703. Depending on the length of the first and second operating platforms 3 and 4, the third connecting rods 8 can be threadedly connected to the corresponding support holes 703 to provide support for the bottoms of the first and second operating platforms 3 and 4.

[0035] Furthermore, a number of connecting ribs 9 are provided between the first operating platform 3 and the second operating platform 4. Both the first operating platform 3 and the second operating platform 4 adopt a steel mesh structure. By hooking the ends of the connecting ribs 9 on the steel mesh, the connection between the first operating platform 3 and the second operating platform 4 can be reinforced, and at the same time, the gap between the first operating platform 3 and the second operating platform 4 can be filled to prevent construction workers from falling from the gap between the first operating platform 3 and the second operating platform 4.

[0036] The temporary support steel arch frame of the utility model is used as a temporary support when the tunnel face collapses and the steel arch frame near the tunnel face is deformed during tunnel construction. The deformed steel arch frame is removed and the specific operation process includes the following steps:

[0037] Step 1: Before temporary support, connect the first operating platform 3 to the front support 1, and the second operating platform 4 to the rear support 2;

[0038] Specifically, according to the required height of the first operating platform 3, the first connecting rod 5 is inserted into the first mounting hole 1021 of the corresponding height. According to the distance between the two support rods 102, the first fastening nut 502 is screwed onto the first threaded segment 501 to secure the first connecting rod 5. Then, the arc-shaped snap ring 6 at the end of the first operating platform 3 is clamped onto the first connecting rod 5. The second operating platform 4 is connected to the rear support 2 in the same way.

[0039] Step 2: Connect the front support 1 and the rear support 2 together through the second connecting rod 7 below the first connecting rod 5. Then, according to the length of the first operating platform 3 and the second operating platform 4, screw the third connecting rod 8 into the corresponding support holes 703 to support the bottom of the first operating platform 3 and the second operating platform 4.

[0040] Step 3: Hook connecting ribs 9 between the first operating platform 3 and the second operating platform 4 to strengthen the connection strength between the first operating platform 3 and the second operating platform 4. At the same time, it can fill the gap between the first operating platform 3 and the second operating platform 4 to prevent construction workers from falling from the gap between the first operating platform 3 and the second operating platform 4.

[0041] Step 4: Move the connected temporary support steel arch frame to the place where temporary support is required.

[0042] Example 2:

[0043] Embodiment 2 Based on embodiment 1, the front support 1 and the rear support 2 are both configured as movable and height-adjustable structures, so as to facilitate the movement and height adjustment of the entire temporary support steel arch frame.

[0044] Specifically, an adjusting screw 103 is threadedly connected to the inside of the support rod 102 along the axial direction, and a mounting groove for connecting the adjusting screw 103 is opened at the bottom of the support rod 102. The adjusting screw 103 passes through the bottom of the support rod 102, and an adjusting nut 104 is threadedly connected to the adjusting screw 103. Figure 6 As shown. In this embodiment, the adjusting screw 103 can adopt a spiral ribbed steel bar structure, whose outer wall can be threadedly engaged with the adjusting nut 104. The lower part of the support rod 102 is a hollow steel tube structure, and the inner diameter of the support rod 102 is slightly larger than the outer diameter of the adjusting screw 103, so that the support rod 102 can move up and down outside the adjusting screw 103. The adjusting nut 104 is not connected to the bottom of the support rod 102, but only supports the support rod 102 through mutual contact. When the adjusting nut 104 is rotated upward, the support rod 102 will be lifted upward accordingly, thereby adjusting the height of the support rod 102 and the steel arch frame body 101.

[0045] It should be noted that in the present invention, when adjusting the height of the steel arch frame body 101, it is necessary to adjust the adjusting nuts 104 corresponding to the bottom of both ends of the steel arch frame body 101 at the same time to avoid the steel arch frame body 101 from tilting during unilateral adjustment, causing the support rod 102 on the other side to be stuck.

[0046] In addition, a moving wheel 105 is installed at the bottom of each adjusting screw 103. The entire front support 1 can be moved by the two moving wheels 105. The moving wheel 105 is a universal wheel with a brake and can be locked after moving to the desired position.

[0047] Preferably, a scale ruler can be set on the adjusting screw 103, and by observing the scale ruler corresponding to the adjusting nut 104, the settlement of the tunnel arch can be monitored in real time to avoid tunnel collapse during the removal of the deformed steel arch frame; if the settlement during the normal support period is too large, it can also be considered to replace different steel sections and re-support to avoid collapse.

[0048] The overall method of using the temporary supporting steel arch in this embodiment is the same as that in the first embodiment, except that:

[0049] Step 4: Move the front support 1 and the rear support 2 to the position where temporary support is required via the moving wheel 105, then turn the adjusting nut 104 to lift the support rod 102 and the steel arch frame body 101 upwards, and adjust the height of the steel arch frame body 101 to be close to the arch top.

[0050] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional temporary support steel arch frame, comprising a front support (1) and a rear support (2), characterized in that: The rear side of the front support (1) is movably connected to a first operating platform (3) with adjustable height, and the front side of the rear support (2) is movably connected to a second operating platform (4) with adjustable height. The first operating platform (3) and the second operating platform (4) are detachably connected.

2. The multifunctional temporary support steel arch according to claim 1, characterized in that: The front support (1) comprises a steel arch frame body (101), and the bottoms of both ends of the steel arch frame body (101) are connected to support rods (102).

3. The multifunctional temporary support steel arch according to claim 2, characterized in that: A first connecting rod (5) is detachably connected between the two support rods (102), and the first operating platform (3) is detachably connected to the first connecting rod (5).

4. The multifunctional temporary support steel arch according to claim 3, characterized in that: A plurality of first mounting holes for mounting the first connecting rod (5) are provided on the support rod (102) along the axial direction.

5. The multifunctional temporary support steel arch according to claim 4, characterized in that: The connection method between the rear support (2) and the second operating platform (4) is exactly the same as the connection method between the front support (1) and the first operating platform (3).

6. The multifunctional temporary support steel arch according to claim 5, characterized in that: A second connecting rod (7) is detachably connected between two supporting rods (102) corresponding to each other of the front support (1) and the rear support (2), and a third connecting rod (8) for supporting the first operating platform (3) and the second operating platform (4) is detachably connected to the second connecting rod (7).

7. The multifunctional temporary support steel arch according to claim 6, characterized in that: The support rod (102) is provided with a second mounting hole (1022) for mounting the second connecting rod (7), and the first mounting hole (1021) and the second mounting hole (1022) are arranged alternately up and down.

8. The multifunctional temporary support steel arch according to claim 2, characterized in that: An adjusting screw (103) is connected inside the support rod (102) along the axial direction; The adjusting screw (103) passes through the bottom of the support rod (102), and an adjusting nut (104) is threadedly connected to the adjusting screw (103), and the adjusting nut (104) is located below the support rod (102).

9. The multifunctional temporary support steel arch according to claim 8, characterized in that: A moving wheel (105) is provided at the bottom of the adjusting screw (103).

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