Turnover protection device for tunnel primary support arch frame connecting plate

Abstract

The utility model provides a turnover protection device for a tunnel primary support arch frame connecting plate. A tunnel primary support arch frame comprises a first side connecting plate and a second side connecting plate, the first side steel arch is arranged on the first side connecting plate; the second side connecting plate and the first side connecting plate are arranged at an interval in the first direction; the second side steel arch is arranged on the second side connecting plate; the turnover protection device comprises a first protection piece which is arranged on the first side connecting plate and arranged on the peripheral wall of the first side steel arch in a sleeving mode; and the second protection piece is arranged on the second side connecting plate and arranged on the peripheral wall of the second side steel arch frame in a sleeving manner. Through the first protection piece and the second protection piece, the first side connecting plate and the second side connecting plate are protected, and concrete is prevented from directly impacting the first side connecting plate and the second side connecting plate. And the arch springing is prevented from being polluted by concrete, and the cleanliness of the connecting plate is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of construction equipment, in particular to a rotatable protection device for a tunnel primary support arch connection plate. Background Art

[0002] During the initial support construction of the tunnel, re-spraying concrete is carried out after the arch frame is installed. During the spraying process, concrete is sprayed on the arch foot connection plate, resulting in the problem of removing the concrete on the surface of the connection plate when the inverted arch steel frame is connected to the arch foot steel frame. At present, in order to solve the problem of the connection plate being covered with concrete, the concrete is usually removed by means of pneumatic pick chiseling, chiseling and welding on the initial support surface, or geotextile covering. However, the above-mentioned pneumatic pick chiseling measures are not only labor-intensive and time-consuming, but also cause a certain degree of damage to the connection plate; the above-mentioned initial support surface chiseling and welding measures often result in inadequate welding and incomplete welds, which will also cause certain damage to the initial support structure; the above-mentioned geotextile covering measures are easily displaced by the impact of high-strength concrete, and the protection effect is poor. In addition, the geotextile has poor bearing capacity and is prone to rupture under the impact of concrete, which not only causes the connection plate to be contaminated by concrete, but also causes a certain degree of damage to the connection plate.

[0003] That is to say, there are problems of concrete damage and contamination of the connecting plate in the prior art. Utility Model Content

[0004] The utility model provides a rotatable protective device for a tunnel primary support arch connecting plate to solve the above technical problems, thereby solving the problems of concrete damage and contamination of the connecting plate.

[0005] The utility model provides a rotatable protection device for a tunnel primary support arch connecting plate, the tunnel primary support arch comprising:

[0006] a first side connecting plate; and

[0007] A first side steel arch frame is disposed on the first side connecting plate; and

[0008] A second side connecting plate, which is spaced apart from the first side connecting plate in the first direction; and

[0009] A second side steel arch frame, which is arranged on the second side connecting plate;

[0010] The reversible protection device includes:

[0011] A first protective member, which is disposed on the first side connecting plate and sleeved on the outer peripheral wall of the first side steel arch frame; and

[0012] A second protective member, which is arranged on the second side connecting plate and sleeved on the outer peripheral wall of the second side steel arch frame;

[0013] Among them, the first protective member is used to cover the upper end surface of the first side connecting plate to prevent concrete from covering the upper end surface of the first side connecting plate, and the second protective member is used to cover the upper end surface of the second side connecting plate to prevent concrete from covering the upper end surface of the second side connecting plate.

[0014] In one embodiment, the first protective member comprises:

[0015] a first side box body, which is disposed on the first side connecting plate and is in contact with an upper end surface of the first side connecting plate; and

[0016] A first side cover plate, which is sleeved on the outer peripheral wall of the first side steel arch frame and is arranged on the first side box body;

[0017] The first side box body is flush with the edge of the first side connecting plate, and the first side cover plate is attached to the outer peripheral wall of the first side steel arch frame.

[0018] In one embodiment, the first side box body is a split structure, which includes two first U-shaped bent plates arranged opposite to each other, and the two first U-shaped bent plates are spliced ​​into the first side box body.

[0019] In one embodiment, the first side cover plate is a split structure, which includes two first plates arranged opposite to each other.

[0020] In one embodiment, the second protective member comprises:

[0021] a second side box body, which is disposed on the second side connecting plate and is in contact with the upper end surface of the second side connecting plate; and

[0022] A second side cover plate is sleeved on the outer peripheral wall of the second side steel arch frame and is arranged on the second side box body;

[0023] The second side box body is flush with the edge of the second side connecting plate, and the second side cover plate is attached to the outer peripheral wall of the second side steel arch frame.

[0024] In one embodiment, the second side box body is a split structure, which includes two second U-shaped bent plates arranged opposite to each other, and the two second U-shaped bent plates are spliced ​​into the second side box body.

[0025] In one embodiment, the second side cover plate is a split structure, which includes two second plates arranged opposite to each other.

[0026] In one embodiment, it further includes a transverse supporting assembly, one end of the transverse supporting assembly is connected to the first protecting member, and the other end of the transverse supporting assembly is connected to the second protecting member.

[0027] In one embodiment, the lateral support assembly comprises:

[0028] A first side long cover plate, one end of which is connected to the first protective member; and

[0029] A second side long cover plate, one end of which is connected to the second protective member; and

[0030] A bottom plate, which is arranged at the bottom ends of the first side long cover plate and the second side long cover plate, and is used to support the first side long cover plate and the second side long cover plate;

[0031] Among them, the other end of the first side long cover plate is spliced ​​with the other end of the second side long cover plate, the bottom plate can cover the splicing seam formed between the other end of the first side long cover plate and the other end of the second side long cover plate, and the bottom plate is connected to the first side long cover plate or the second side long cover plate.

[0032] In one embodiment, a threaded hole is provided on the bottom plate, a connecting hole corresponding to the threaded hole is provided on the second side long cover plate, and the lateral support assembly also includes a rotatable bolt, which is passed through the connecting hole and threadedly connected to the threaded hole.

[0033] Compared with the prior art, the utility model has the following beneficial effects: the first side connecting plate and the second side connecting plate are protected by the first protecting member and the second protecting member, and the first side connecting plate and the second side connecting plate are prevented from being directly impacted by concrete. The arch foot is also prevented from being contaminated by concrete, and the cleanliness of the connecting plate is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the three-dimensional structure of the rotatable protection device in the embodiment of the utility model;

[0035] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the first side box body;

[0036] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of the first side cover plate;

[0037] Figure 4 for Figure 1 A schematic diagram of the three-dimensional structure of the second side box body;

[0038] Figure 5 for Figure 1 Schematic diagram of the three-dimensional structure of the second side cover plate.

[0039] In the figure: 1. first side connecting plate; 2. second side connecting plate; 3. first side steel arch frame; 4. second side steel arch frame; 5. first side box body; 6. second side box body; 7. first side cover plate; 8. second side cover plate; 9. first side long cover plate; 10. second side long cover plate; 11. bottom plate; 12. rotatable bolt. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] like Figure 1 As shown, the utility model provides a rotatable protection device for the connection plate of the tunnel primary support arch frame, and the tunnel primary support arch frame includes a first side connection plate 1, a first side steel arch frame 3, a second side connection plate 2 and a second side steel arch frame 4. Among them, the first side steel arch frame 3 is arranged on the first side connection plate 1; the second side connection plate 2 is arranged with the first side connection plate 1 in a first direction; the second side steel arch frame 4 is arranged on the second side connection plate 2.

[0042] like Figure 1 As shown, the utility model provides a rotatable protection device for the tunnel primary support arch connection plate, which includes a first protection member and a second protection member. The first protection member is arranged on the first side connection plate 1 and sleeved on the outer peripheral wall of the first side steel arch 3; the second protection member is arranged on the second side connection plate 2 and sleeved on the outer peripheral wall of the second side steel arch 4; the first protection member is used to cover the upper end surface of the first side connection plate 1 to prevent concrete from covering the upper end surface of the first side connection plate 1, and the second protection member is used to cover the upper end surface of the second side connection plate 2 to prevent concrete from covering the upper end surface of the second side connection plate 2.

[0043] In the above arrangement, the first protective member and the second protective member are used to protect the first side connecting plate 1 and the second side connecting plate 2, thereby preventing the concrete from directly impacting the first side connecting plate 1 and the second side connecting plate 2. Furthermore, the arch foot is prevented from being contaminated by concrete, thereby ensuring the cleanliness of the connecting plates.

[0044] Specifically, Figure 1 As shown, in one embodiment, the first protective member includes a first side box body 5 and a first side cover plate 7, wherein the first side box body 5 is arranged on the first side connecting plate 1 and is fitted with the upper end surface of the first side connecting plate 1; the first side cover plate 7 is sleeved on the outer peripheral wall of the first side steel arch frame 3 and is arranged on the first side box body 5; the first side box body 5 is flush with the edge of the first side connecting plate 1, and the first side cover plate 7 is fitted on the outer peripheral wall of the first side steel arch frame 3.

[0045] Specifically, Figure 2 As shown, in one embodiment, the first side box body 5 is a split structure, which includes two first U-shaped bent plates arranged opposite to each other, and the two first U-shaped bent plates are spliced ​​into the first side box body 5.

[0046] Specifically, Figure 3 As shown, in one embodiment, the first side cover plate 7 is a split structure, which includes two first plates arranged opposite to each other.

[0047] Specifically, Figure 1 As shown, in one embodiment, the second protection member includes a second side box body 6 and a second side cover plate 8. The second side box body 6 is arranged on the second side connecting plate 2 and fits with the upper end surface of the second side connecting plate 2; the second side cover plate 8 is sleeved on the outer peripheral wall of the second side steel arch frame 4 and arranged on the second side box body 6; the second side box body 6 is flush with the edge of the second side connecting plate 2, and the second side cover plate 8 fits with the outer peripheral wall of the second side steel arch frame 4.

[0048] Specifically, Figure 4 As shown, in one embodiment, the second side box body 6 is a split structure, which includes two second U-shaped bent plates arranged opposite to each other, and the two second U-shaped bent plates are spliced ​​into the second side box body 6.

[0049] Specifically, Figure 5 As shown, in one embodiment, the second side cover plate 8 is a split structure, which includes two second plates arranged opposite to each other.

[0050] Specifically, Figure 1 As shown, in one embodiment, the rotatable protection device further includes a lateral support assembly, one end of the lateral support assembly is connected to the first protection member, and the other end of the lateral support assembly is connected to the second protection member.

[0051] Specifically, Figure 1 As shown, in one embodiment, the lateral support assembly includes a first side long cover plate 9, a second side long cover plate 10 and a bottom plate 11. Among them, the first side long cover plate 9, one end of which is connected to the first protective member; the second side long cover plate 10, one end of which is connected to the second protective member; the bottom plate 11, which is arranged at the bottom ends of the first side long cover plate 9 and the second side long cover plate 10, is used to support the first side long cover plate 9 and the second side long cover plate 10; the other end of the first side long cover plate 9 is spliced ​​with the other end of the second side long cover plate 10, and the bottom plate 11 can cover the splicing seam formed between the other end of the first side long cover plate 9 and the other end of the second side long cover plate 10, and the bottom plate 11 is connected to the first side long cover plate 9 or the second side long cover plate 10.

[0052] Specifically, Figure 1 As shown, in one embodiment, a threaded hole is provided on the base plate 11, a connecting hole corresponding to the threaded hole is provided on the second side long cover plate 10, and the lateral support assembly also includes a rotatable bolt 12, which is passed through the connecting hole and threadedly connected to the threaded hole.

[0053] Combine the following Figures 1 to 5 , a more specific embodiment of the present application is described below:

[0054] The utility model provides a revolvable protection device, wherein a first side box body 5 is arranged above the first side connecting plate, and a second side box body 6 is arranged above the second side connecting plate 2, wherein the first side box body 5 and the second side box body 6 are both connected by two open box bodies (first and second U-shaped bending plates). A first side cover plate 7 is arranged above the first side box body 5, and a second side cover plate 8 is arranged above the second side box body 6, wherein the first side cover plate 7 and the second side cover plate 8 are both connected by two small cover plates (first and second plate bodies); the arrangement of the first and second side boxes and the first and second side cover plates forms a closed space above the first side connecting plate 1 and the second side connecting plate 2, which can effectively avoid the problem of the connecting plates being contaminated by sprayed concrete. A first side long cover plate 9 and a second side long cover plate 10 are arranged between the two steel arch frames to connect and close, and a bottom plate 11 is arranged below the middle interface position of the two long cover plates to close, thereby preventing the sprayed concrete from penetrating into the bottom from the middle interface position, and the arrangement of the first side long cover plate 9 and the second side long cover plate 10 is conducive to improving the bearing capacity and isolating concrete. Rotatable bolts are arranged between the second side long cover plate 10 and the bottom plate 11, so as to facilitate the connection of the first side long cover plate 9 and the second side long cover plate 10 and the closure of the middle interface position after the invert is filled; it can not only ensure the integrity of the long cover plate between the two steel arch frames, but also improve the impact resistance.

[0055] When installing the utility model, first align the two parts of the first side box body 5 and install them at the first side connecting plate 1 and the first side steel arch frame 3, then align the two parts of the second side box body 6 and install them at the second side connecting plate 2 and the second side steel arch frame 4, and ensure that the first side box body 5, the second side box body 6 and the corresponding steel arch frame and the connecting plate are tightly fitted. Then, a first side cover plate 7 is arranged above the first side box body 5 and between the first side steel arch frame 3 to make it a closed structure. Similarly, a second side cover plate 8 is arranged above the second side box body 6 and between the second side steel arch frame 4, and the sealing between the second side cover plate and the second side steel arch frame and the second side box body is ensured. Finally, a first side long cover plate 9 and a second side long cover plate 10 are arranged between the first side steel arch frame 3 and the second side steel arch frame 4 to cover, a bottom plate is installed at the middle interface position of the two long cover plates to ensure their sealing, and a rotatable bolt 12 is installed between the second side long cover plate 10 and the bottom plate 11, so that it is simpler and more convenient during operation. In this way, after the installation is completed, the device can cover the first side connecting plate 1 and the second side connecting plate 2 at the arch foot position to the maximum extent. By setting the first side cover plate 7, the second side cover plate 8, the first side long cover plate 9, and the second side long cover plate 10, not only can the impact load of the shotcrete be borne, but also the first side connecting plate 1 and the second side connecting plate 2 can be effectively avoided from being contaminated by concrete. The two steel arch frames are conveniently dismantled after the shotcrete is completed by splicing and covering the first and second long cover plates. By setting the bottom plate 11 and the rotatable bolts 12, not only can the leakage of concrete at the middle interface position of the first side long cover plate 9 and the second side long cover plate 10 be effectively avoided, but also the installation and removal speed of the first side long cover plate 9, the second side long cover plate 10 and the bottom plate 11 can be improved. The above-mentioned box body, cover plate and other devices can all be made of materials such as bamboo plywood and steel plate, which are not only convenient to obtain and low in cost, but also can be recycled, which can effectively improve work efficiency and reduce construction costs.

[0056] The arrangement of the bottom plate 11 and the rotatable bolt 12 can not only effectively prevent the leakage of concrete at the interface between the first side long cover plate 9 and the second side long cover plate 10, but also improve the installation and removal speed of the first side long cover plate 9, the second side long cover plate 10 and the bottom plate 11. The first and second side boxes, the first and second side long cover plates and other devices can all be made of bamboo plywood, steel plates and other materials, which are not only convenient to obtain and low in cost, but also can be recycled, which can effectively improve work efficiency and reduce construction costs.

[0057] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0058] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0059] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", 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 representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0060] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A rotatable protection device for a tunnel primary support arch connection plate, characterized in that: The tunnel primary arch includes: a first side connecting plate; and A first side steel arch frame is arranged on the first side connecting plate; and A second side connecting plate, which is spaced apart from the first side connecting plate in the first direction; and A second side steel arch frame, which is arranged on the second side connecting plate; The reversible protection device comprises: A first protective member, which is disposed on the first side connecting plate and sleeved on the outer peripheral wall of the first side steel arch frame; and A second protective member, which is arranged on the second side connecting plate and sleeved on the outer peripheral wall of the second side steel arch frame; The first protective member is used to cover the upper end surface of the first side connecting plate to prevent concrete from covering the upper end surface of the first side connecting plate, and the second protective member is used to cover the upper end surface of the second side connecting plate to prevent concrete from covering the upper end surface of the second side connecting plate.

2. The rotatable protection device for the tunnel primary support arch connection plate according to claim 1 is characterized in that: The first protection member comprises: a first side box body, which is disposed on the first side connecting plate and is in contact with an upper end surface of the first side connecting plate; and A first side cover plate is sleeved on the outer peripheral wall of the first side steel arch frame and is arranged on the first side box body; The first side box body is flush with an edge of the first side connecting plate, and the first side cover plate is attached to the outer peripheral wall of the first side steel arch frame.

3. The rotatable protection device for the tunnel primary support arch connection plate according to claim 2 is characterized in that: The first side box body is a split structure, which includes two first U-shaped bent plates arranged opposite to each other, and the two first U-shaped bent plates are spliced ​​into the first side box body.

4. The rotatable protection device for the tunnel primary support arch connection plate according to claim 2, characterized in that: The first side cover plate is a split structure, which includes two first plates arranged opposite to each other.

5. The rotatable protection device for the tunnel primary support arch connection plate according to claim 1 is characterized in that: The second protection member comprises: a second side box body, which is disposed on the second side connecting plate and is in contact with an upper end surface of the second side connecting plate; and A second side cover plate is sleeved on the outer peripheral wall of the second side steel arch frame and is arranged on the second side box body; The second side box body is flush with the edge of the second side connecting plate, and the second side cover plate is attached to the outer peripheral wall of the second side steel arch frame.

6. The rotatable protection device for the tunnel primary support arch connection plate according to claim 5, characterized in that: The second side box body is a split structure, which includes two second U-shaped bent plates arranged opposite to each other, and the two second U-shaped bent plates are spliced ​​into the second side box body.

7. The rotatable protection device for the tunnel primary support arch connection plate according to claim 5, characterized in that: The second side cover plate is a split structure, which includes two second plates arranged opposite to each other.

8. The rotatable protection device for the tunnel primary support arch connection plate according to claim 1, characterized in that: It also includes a lateral support component, one end of which is connected to the first protection component, and the other end of which is connected to the second protection component.

9. The rotatable protection device for the tunnel primary support arch connection plate according to claim 8, characterized in that: The lateral support assembly comprises: A first side long cover plate, one end of which is connected to the first protective member; and A second side long cover plate, one end of which is connected to the second protective member; and A bottom plate, which is arranged at the bottom ends of the first side long cover plate and the second side long cover plate, and is used to support the first side long cover plate and the second side long cover plate; Among them, the other end of the first side long cover plate is spliced ​​with the other end of the second side long cover plate, the bottom plate can cover the splicing seam formed between the other end of the first side long cover plate and the other end of the second side long cover plate, and the bottom plate is connected to the first side long cover plate or the second side long cover plate.

10. The rotatable protection device for the tunnel primary support arch connection plate according to claim 9, characterized in that: The bottom plate is provided with a threaded hole, the second side long cover plate is provided with a connecting hole corresponding to the threaded hole, and the lateral support assembly also includes a rotatable bolt, which is passed through the connecting hole and threadedly connected to the threaded hole.

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