Positioning tool for steel arch connecting plate

Abstract

The utility model relates to a positioning tool for a steel arch connecting plate, which comprises a positioning plate and a limiting plate vertically fixed on the positioning plate, the end parts of the positioning plate and the limiting plate are connected, and the connecting edge of the positioning plate and the limiting plate and the width of the limiting plate are equal to the width of a web plate of I-shaped steel; the width of the positioning plate is smaller than or equal to the width of the connecting edge of the positioning plate and the limiting plate, and the limiting plate is provided with a positioning piece used for limiting the positions of the connecting plate and the limiting plate. The steel arch frame has the advantages that the assembling deviation of the steel arch frame is reduced, and the rigid supporting effect of the steel arch frame is fully exerted.

Description

Technical Field

[0001] The present application relates to the field of steel arch frames for initial tunnel support, and in particular to a positioning tool for steel arch frame connecting plates. Background Art

[0002] With the construction of national high-speed and railway networks, tunnel projects are increasing. Most tunnel projects are constructed using the New Austrian Tunneling Method (NATM). How to ensure the safety of tunnel construction and improve the quality of tunnel construction is one of the important issues for construction personnel. The initial support of the tunnel is an important part of the New Austrian Tunneling Method (NATM). The initial support of the tunnel consists of anchor rods, steel mesh, I-beam arch frames and shotcrete. Before the strength of the shotcrete is increased, the I-beam arch frames play the role of resisting the deformation of the surrounding rock and protecting the safety of the operators. They are the main load-bearing components of the initial support.

[0003] Due to construction needs, the steel arch frames are processed in sections at the steel bar processing plant, that is, the I-beams and connecting plates are welded and then transported to the site to use high-strength bolts to bolt the connecting plates of adjacent segmented I-beams. The connection quality of the steel arch connecting steel plates directly affects the stress of the steel arch frame and the difficulty of on-site assembly. In order to ensure the stress of the steel frame, the axis deviation of adjacent segmented I-beams is required to be no more than 2mm, and the connecting plates of adjacent segmented I-beams must be close together.

[0004] From the above, it can be seen that the positioning accuracy of the connecting plate and the steel arch frame is the key to ensuring the installation accuracy of the steel frame. However, during construction, operators often weld the connecting plate and the I-beam due to inaccurate positioning of the connecting steel plate, which leads to welding misalignment. This causes excessive assembly deviations between different I-beam sections and fails to give full play to the rigid support function of the steel arch frame. Utility Model Content

[0005] In order to reduce the assembly deviation of the steel arch frame and give full play to the rigid support function of the steel arch frame, the present application provides a positioning tool for a steel arch frame connecting plate.

[0006] The positioning tool for a steel arch connecting plate provided in the present application adopts the following technical solution:

[0007] A positioning tool for a steel arch frame connecting plate, comprising a positioning plate and a limiting plate vertically fixed to the positioning plate, the ends of the positioning plate and the limiting plate are connected, the connecting edges of the positioning plate and the limiting plate and the width of the limiting plate are equal to the web width of the I-beam, the width of the positioning plate is less than or equal to the width of the connecting edges of the positioning plate and the limiting plate, and the limiting plate is provided with a positioning piece, which is used to limit the positions of the connecting plate and the limiting plate.

[0008] By adopting the above technical solution, the steel arch frame I-beam is placed on its side on the welding stand, the positioning plate is placed between the two wing plates of the I-beam and made close to the web, and then the connecting plate is fitted to the limiting plate to ensure that the connecting plate and the I-beam maintain accurate verticality. In addition, the welding position of the connecting plate relative to the I-beam is limited by the positioning piece, and then the connecting plate and the I-beam are welded. Accurate positioning and welding through the above process can greatly reduce the deviation caused by the manual welding process, and the connecting plates of adjacent segmented I-beams can be kept in close contact, thereby reducing the assembly deviation of the overall steel arch frame and giving full play to the rigid support role of the steel arch frame in the initial support of the tunnel.

[0009] Optionally, the positioning member includes a plurality of positioning bolts vertically arranged on the limiting plate, the studs of the plurality of positioning bolts are all passed through the limiting plate and the screw heads are all fixedly connected to the limiting plate, the studs of the plurality of positioning bolts are located on the side of the limiting plate away from the positioning plate, the number of the positioning bolts is set corresponding to the number of screw holes of the connecting plate, and the spacing between adjacent positioning bolts is equal to the spacing between adjacent screw holes of the connecting plate.

[0010] By adopting the above technical solution, the connecting plate is affixed to the limiting plate, and a number of positioning bolts are respectively inserted into the screw holes of the connecting plate to uniformly position the positions of the screw holes of the connecting plate relative to the I-beam, so that when adjacent segmented steel arch frames are assembled, the screw holes of adjacent connecting plates maintain precise alignment.

[0011] Optionally, the limit plate is a T-shaped plate structure, the small end of the limit plate is fixed to the positioning plate, and the width of the small end of the limit plate is equal to the web width of the I-beam, and several of the positioning bolts are located at the large end of the limit plate.

[0012] By adopting the above technical solution, since the arrangement distance of the screw holes on the connecting plate is usually larger than the web width of the I-beam, by setting the positioning bolt at the large end of the limiting plate and then extending the small end of the limiting plate between the two wing plates of the I-beam, the I-beam and the connecting plate can be positioned at the same time.

[0013] Optionally, the positioning plate is provided with a first auxiliary fixing member, and the first auxiliary fixing member is used to further limit and fix the position of the I-beam relative to the positioning plate.

[0014] By adopting the above technical solution, the I-beam is limited and fixed relative to the positioning plate by the first auxiliary fixing member. The operator does not need to control the I-beam and the positioning plate all the time, so as to take the connecting plate for the next positioning operation, thereby improving the convenience of operation and further reducing the deviation caused by manual welding.

[0015] Optionally, the first auxiliary fixing member includes at least one first positioning magnet fixedly disposed on the positioning plate, and the at least one first positioning magnet is arranged at intervals along the length direction of the positioning plate.

[0016] By adopting the above technical solution, the web of the I-beam is attracted and fixed by the first positioning magnet, so as to limit and fix the position of the I-beam relative to the positioning plate.

[0017] Optionally, the positioning plate is provided with a handle, and the handle facilitates removing the positioning plate from the I-beam.

[0018] By adopting the above technical solution, since the first positioning magnet attracts and fixes the web of the I-beam, it is necessary to hold the handle after welding is completed, making the operation of separating the positioning plate and the I-beam more labor-saving and convenient.

[0019] Optionally, the limiting plate is provided with a second auxiliary fixing member, and the second auxiliary fixing member is used to further limit and fix the position of the connecting plate relative to the limiting plate.

[0020] By adopting the above technical solution, the connecting plate and the limiting plate are limited and fixed by the second auxiliary fixing member to improve the convenience of operation; and the connecting plate and the limiting plate can be kept in a close contact state, further improving the accuracy of welding.

[0021] Optionally, the second auxiliary fixing member includes at least one second positioning magnet fixedly disposed on the limiting plate.

[0022] By adopting the above technical solution, the second positioning magnet can keep the connecting plate and the limiting plate in a close contact state, so that the connecting plate and the limiting plate can keep in a close contact state.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Place the positioning plate between the two wing plates of the I-beam and make it close to the web, and then fit the connecting plate to the limiting plate to ensure that the connecting plate and the I-beam maintain accurate verticality. In addition, the relative position of the connecting plate and the limiting plate is limited by the positioning piece to limit the position of the connecting plate relative to the I-beam, and then the connecting plate and the I-beam are welded, which can greatly reduce the deviation caused by the manual welding process to ensure that the axis deviation of adjacent segmented I-beams is no more than 2mm, and the connecting plates of adjacent segmented I-beams can be kept in close contact, thereby reducing the assembly deviation of the overall steel arch frame and giving full play to the rigid support role of the steel arch frame in the initial support of the tunnel;

[0025] 2. While the connection plate is attached to the limit plate, several positioning bolts are respectively inserted into the screw holes of the connection plate to uniformly position the screw holes of the connection plate relative to the I-beam, so that when the adjacent segmented steel arches are assembled, the screw holes of the adjacent connection plates maintain precise alignment, so as to further reduce the assembly deviation of the overall steel arch frame and give full play to the rigid support role of the steel arch frame in the initial support of the tunnel;

[0026] 3. The position of the I-beam relative to the positioning plate is further limited and fixed by the first positioning magnet, and the operator does not need to control the I-beam and the positioning plate all the time, so that the operator can take the connecting plate for the next positioning operation, which improves the convenience of operation and further reduces the deviation caused by manual welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0028] Figure 2 It is an installation diagram of an embodiment of the present application.

[0029] Figure numerals: 1. positioning plate; 2. limiting plate; 3. positioning member; 31. positioning bolt; 4. first auxiliary fixing member; 41. first positioning magnet; 5. handle; 6. second auxiliary fixing member; 61. second positioning magnet; 7. I-beam; 8. connecting plate. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-2 This application is described in further detail.

[0031] The present application embodiment discloses a positioning tool for a steel arch connecting plate. Figure 1 The positioning tool of the steel arch frame connecting plate includes a positioning plate 1 and a limiting plate 2. The ends of the positioning plate 1 and the limiting plate 2 are fixedly connected to each other, and the positioning plate 1 is vertically arranged on the limiting plate 2.

[0032] Reference Figure 1 and Figure 2 The connecting edge of the positioning plate 1 and the limiting plate 2 is equal to the web width of the I-beam 7, and the width of the positioning plate 1 is less than or equal to the width of the connecting edge of the positioning plate 1 and the limiting plate 2, that is, the positioning plate 1 is a rectangular plate structure or a trapezoidal plate structure. In the embodiment of the present application, the positioning plate 1 is a rectangular plate structure, and the short side edge of one side of the positioning plate 1 is fixedly connected to the limiting plate 2.

[0033] Reference Figure 1 and Figure 2The limiting plate 2 is a T-shaped plate structure, the width of the small end of the limiting plate 2 is equal to the web width of the I-beam 7, and the small end of the limiting plate 2 is fixedly connected to the positioning plate 1. The large end of the limiting plate 2 is provided with a positioning member 3, which is used to limit the position of the connecting plate 8 and the limiting plate 2.

[0034] Reference Figure 1 and Figure 2 The positioning member 3 includes a plurality of positioning bolts 31. The number of positioning bolts 31 corresponds to the number of screw holes of the connecting plate 8. In the embodiment of the present application, the number of positioning bolts 31 is two. Both positioning bolts 31 are vertically arranged on the limiting plate 2. Both studs of the two positioning bolts 31 are penetrated through the limiting plate 2 and the screw heads are fixedly connected to the limiting plate 2. The studs of the two positioning bolts 31 are located on the side of the limiting plate 2 away from the positioning plate 1. The spacing between adjacent positioning bolts 31 is equal to the spacing between adjacent screw holes of the connecting plate 8.

[0035] After the I-beam 7 of the steel arch is cold-bent, it is placed on its side on the welding stand, the positioning plate 1 is placed between the two wing plates of the I-beam 7 and is close to the web, and then the connecting plate 8 is attached to the limiting plate 2, so that the connecting plate 8 and the I-beam 7 maintain accurate verticality. In addition, while the connecting plate 8 is attached to the limiting plate 2, a number of positioning bolts 31 are respectively inserted into the screw holes of the connecting plate 8 to define the relative position of the connecting plate 8 and the limiting plate 2, so as to define the position of the connecting plate 8 relative to the I-beam 7, and uniformly position the position of the screw holes of the connecting plate 8 relative to the I-beam 7, so that when the adjacent segmented steel arches are assembled, the screw holes of the adjacent connecting plates 8 maintain accurate alignment.

[0036] By accurately positioning and then welding through the above process, the deviation caused by manual welding can be greatly reduced to ensure that the axial deviation of adjacent segmented I-beams 7 is no more than 2 mm, and the connecting plates 8 of adjacent segmented I-beams 7 can be kept in close contact, thereby reducing the assembly deviation of the overall steel arch frame and giving full play to the rigid support role of the steel arch frame in the initial support of the tunnel.

[0037] Since the arrangement distance of the screw holes on the connecting plate 8 is usually greater than the web width of the I-beam 7, the positioning bolt 31 is set at the large end of the limiting plate 2, and the small end of the limiting plate 2 is extended between the two wing plates of the I-beam 7 to adapt to the simultaneous positioning of the I-beam 7 and the connecting plate 8.

[0038] Reference Figure 1 and Figure 2 In order to further reduce the deviation caused by manual welding, the positioning plate 1 is provided with a first auxiliary fixing member 4, and the first auxiliary fixing member 4 includes two first positioning magnets 41. The two first positioning magnets 41 are embedded in and fixedly connected to the positioning plate 1, and the two first positioning magnets 41 are arranged at intervals along the length direction of the positioning plate 1.

[0039] The web of the I-beam 7 is fixed by the two first positioning magnets 41, so as to limit and fix the position of the I-beam 7 relative to the positioning plate 1. The operator does not need to control the I-beam 7 and the positioning plate 1 all the time, so that the operator can take the connecting plate 8 for the next positioning operation, which improves the convenience of operation and further reduces the deviation caused by manual welding.

[0040] Reference Figure 1 and Figure 2 Since the first positioning magnet 41 attracts and fixes the web of the I-beam 7, it is more laborious to separate the I-beam 7 from the positioning plate 1 after welding. A handle 5 is fixedly connected to the side wall of the positioning plate 1 facing the limiting plate 2. After welding, holding the handle 5 makes the operation of separating the positioning plate 1 from the I-beam 7 more labor-saving and convenient.

[0041] Reference Figure 1 and Figure 2 In order to further improve the accuracy of welding, the limiting plate 2 is provided with a second auxiliary fixing member 6, which includes a second positioning magnet 61, which is embedded in and fixedly connected to the limiting plate 2. The second positioning magnet 61 can make the connection plate 8 and the limiting plate 2 adsorbed and fixed, and the position of the connection plate 8 relative to the limiting plate 2 is further limited and fixed to improve the convenience of operation; and the connection plate 8 and the limiting plate 2 can be kept in a close contact state, further improving the accuracy of welding.

[0042] The implementation principle of the positioning tool for the steel arch connecting plate in the embodiment of the present application is as follows: the steel arch I-beam 7 is placed sideways on the welding stand, the positioning plate 1 is placed between the two wing plates of the I-beam 7 and is close to the web, and then the connecting plate 8 is fitted to the limiting plate 2, so that the connecting plate 8 and the I-beam 7 maintain accurate verticality. In addition, the welding position of the connecting plate 8 relative to the I-beam 7 is limited by the positioning bolts 31, and then the connecting plate 8 and the I-beam 7 are welded. Accurate positioning and welding through the above process can greatly reduce the deviation caused by the manual welding process, and the connecting plates 8 of adjacent segmented I-beams 7 can be kept in close contact, thereby reducing the assembly deviation of the overall steel arch and giving full play to the rigid support role of the steel arch in the initial support of the tunnel.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A positioning tool for a steel arch connecting plate, characterized in that: The invention comprises a positioning plate (1) and a limiting plate (2) vertically fixed to the positioning plate (1), the ends of the positioning plate (1) and the limiting plate (2) are connected, the width of the connecting edge of the positioning plate (1) and the limiting plate (2) and the width of the limiting plate (2) are equal to the web width of the I-beam (7), the width of the positioning plate (1) is less than or equal to the width of the connecting edge of the positioning plate (1) and the limiting plate (2), and the limiting plate (2) is provided with a positioning member (3), and the positioning member (3) is used to limit the position of the connecting plate (8) and the limiting plate (2).

2. A positioning tool for a steel arch connecting plate according to claim 1, characterized in that: The positioning member (3) comprises a plurality of positioning bolts (31) vertically arranged on the limiting plate (2), the studs of the plurality of positioning bolts (31) are all passed through the limiting plate (2) and the screw heads are all fixedly connected to the limiting plate (2), the studs of the plurality of positioning bolts (31) are located on a side of the limiting plate (2) away from the positioning plate (1), the number of the positioning bolts (31) is arranged corresponding to the number of screw holes of the connecting plate (8), and the spacing between adjacent positioning bolts (31) is equal to the spacing between adjacent screw holes of the connecting plate (8).

3. A positioning tool for a steel arch connecting plate according to claim 2, characterized in that: The limiting plate (2) is a T-shaped plate structure, the small end of the limiting plate (2) is fixed to the positioning plate (1), and the width of the small end of the limiting plate (2) is equal to the web width of the I-beam (7), and the plurality of positioning bolts (31) are all located at the large end of the limiting plate (2).

4. A positioning tool for a steel arch connecting plate according to claim 1, characterized in that: The positioning plate (1) is provided with a first auxiliary fixing member (4), and the first auxiliary fixing member (4) is used to further limit and fix the position of the I-beam (7) relative to the positioning plate (1).

5. A positioning tool for a steel arch connecting plate according to claim 4, characterized in that: The first auxiliary fixing member (4) comprises at least one first positioning magnet (41) fixedly arranged on the positioning plate (1), and the at least one first positioning magnet (41) is arranged in an interval arrangement along the length direction of the positioning plate (1).

6. A positioning tool for a steel arch connecting plate according to claim 5, characterized in that: The positioning plate (1) is provided with a handle (5), and the handle (5) facilitates separation of the positioning plate (1) and the I-beam (7).

7. A positioning tool for a steel arch connecting plate according to claim 1, characterized in that: The limiting plate (2) is provided with a second auxiliary fixing member (6), and the second auxiliary fixing member (6) is used to further limit and fix the position of the connecting plate (8) relative to the limiting plate (2).

8. A positioning tool for a steel arch connecting plate according to claim 7, characterized in that: The second auxiliary fixing member (6) comprises at least one second positioning magnet (61) fixedly arranged on the limiting plate (2).

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