Welding positioning device for tunnel profile steel arch frame connecting steel plate

Abstract

A welding positioning device for a tunnel section steel arch frame connecting steel plate comprises an L-shaped plate with a long adjusting hole in the vertical edge, two left clamping and inserting positioning plates arranged in parallel and two right clamping and inserting positioning plates arranged in parallel. Fixing plates are fixedly connected to one end between the two left clamping and inserting positioning plates and one end between the two right clamping and inserting positioning plates respectively, clamping grooves for clamping and inserting the top end of an arch frame I-shaped steel leg plate are formed in the bottoms, close to the ends of the fixing plates, of the left clamping and inserting positioning plates and the right clamping and inserting positioning plates respectively, and the left clamping and inserting positioning plates and the right clamping and inserting positioning plates are in adjusting connection through adjusting connecting plates and bolting pieces. The left clamping and inserting positioning plate and the right clamping and inserting positioning plate at the rear end are respectively and fixedly provided with a positioning bolt, the outer side of the fixing plate is fixedly provided with a locking bolt used for installing an L-shaped plate, the transverse edge of the L-shaped plate is clamped at the bottom end of a leg plate of the arch frame I-shaped steel, and a butterfly nut is installed on the locking bolt. The welding positioning device is light and convenient to operate, can be suitable for positioning and welding of connecting steel plates of tunnel section steel lagging jacks of various models, and can avoid falling due to misoperation.

Description

Technical Field

[0001] The utility model belongs to the technical field of butt-jointing and positioning of steel plates for connecting steel arch frames of tunnel initial support, and in particular relates to a welding positioning device for connecting steel plates of steel arch frames of tunnels. Background Art

[0002] In tunnel construction, the steel arch frames for the initial support of the tunnel lining need to be composed of multiple pieces of steel connected into a unit. The steel arch frames for the initial support of the tunnel lining need to be processed in advance in the station in front of the tunnel entrance, and then transported to the tunnel through the connecting steel plates at both ends of the arch frames, and the multiple pieces of steel arch frames are connected into a unit with bolts. In the actual welding process of the steel arch frames and the connecting steel plates, the bolt holes of the connecting steel plates reserved at both ends of the steel arch frames often have errors in the relative position when the steel and the connecting steel plates are welded, resulting in the reserved screw holes of the steel arch connecting steel plates cannot be aligned during the actual installation in the tunnel. In order to improve the welding accuracy of the steel and the connecting steel plates, people have designed and adopted a welding positioning device for the connecting steel plates. Public literature also reports some connecting plate positioning devices, such as:

[0003] 1. Chinese Patent: A simple tunnel steel arch frame and connecting plate welding processing positioning device, application number: 202321042295.X, application date: 2023.05.05, abstract: The utility model discloses a simple tunnel steel arch frame and connecting plate welding processing positioning device, which includes a left positioning plate and a right positioning plate; the left positioning plate and the right positioning plate are placed in parallel, and an adjustment connecting plate that can adjust the distance between the left positioning plate and the right positioning plate is connected between the left positioning plate and the right positioning plate; the front ends of the left positioning plate and the right positioning plate are respectively installed with a positioning bolt whose installation position can be adjusted up and down, and the installation position of the positioning bolt matches the position of the reserved bolt hole of the connecting plate. The application of this simple tunnel steel arch frame and connecting plate welding processing positioning device can improve the welding efficiency and accuracy of I-beams and connecting plates, and can be applicable to the welding processing of I-beams and connecting plates of various specifications and sizes.

[0004] 2. Chinese Patent: Tunnel Steel Arch Frame Connection Plate Positioning Mold, Application No. 201820955680.6, Application Date 2018.06.20, Abstract: The utility model provides a tunnel steel arch frame connection plate positioning mold, which belongs to the field of tunnel construction technology, including a positioning frame used to cooperate with the inner groove of the I-beam, the outer side of the positioning frame cooperates with the connection plate to be welded, and the positioning frame is provided with a positioning piece that cooperates with the reserved bolt hole on the connection plate. With the utility model, it is only necessary to insert the positioning frame into the inner groove of the I-beam, fix the connection plate on the positioning frame through the positioning piece, use the positioning frame to cooperate with the inner groove of the I-beam, and use the positioning piece on the positioning frame to cooperate with the reserved bolt hole on the connection plate to be welded to achieve the positioning of the connection plate, thereby ensuring the position accuracy of the connection plate relative to the I-beam. With the utility model, the welding quality of the connection plate can be guaranteed, the work efficiency can be improved, the labor intensity of the operator can be reduced, thereby ensuring the quality of tunnel construction and eliminating safety hazards.

[0005] Through applied research, it is found that in large projects, there are often multiple types of steel arch frames. The above-mentioned document 2 is designed for a specific type of steel and cannot meet the welding of connecting steel plates of multiple types of steel arch frames. Although the processing positioning device disclosed in the above-mentioned document 1 can be applied to the positioning welding of connecting steel plates of multiple types of tunnel steel arch frames, it is naturally placed in the steel. When it is designed to be heavier, it is not easy for the staff to place and operate it. When it is designed to be lighter, after the connecting steel plate is suspended and positioned, if the connecting steel plate is accidentally touched and pressed, it will cause the entirety to fall from the steel, posing a safety hazard. Therefore, it is necessary to design a welding positioning device that is easy to operate, can be applied to the positioning welding of connecting steel plates of multiple types of tunnel steel arch frames, and can be connected with the steel to prevent it from falling due to misoperation. Summary of the invention

[0006] The purpose of the utility model is to provide a welding positioning device for connecting steel plates of tunnel steel arch frames. The welding positioning device for connecting steel plates of tunnel steel arch frames is easy to operate, can be suitable for positioning welding of connecting steel plates of various types of tunnel steel arch frames, and can be connected with the steel by blocking to avoid falling due to misoperation.

[0007] The utility model is realized by the following technical solutions:

[0008] A welding positioning device for connecting steel plates of tunnel steel arch frames, comprising an L-shaped plate, two parallel left card insertion positioning plates and two parallel right card insertion positioning plates, one end between the two parallel left card insertion positioning plates and one end between the two parallel right card insertion positioning plates are respectively fixedly connected with a fixing plate, the bottoms of the left card insertion positioning plate and the right card insertion positioning plate close to the fixing plate end are respectively provided with a card slot for being inserted into the top of the leg plate of the arch frame I-beam, the ends of the left card insertion positioning plate and the right card insertion positioning plate away from the fixing plate are connected by adjusting the connecting plate and the bolt connector, and the adjusting connecting plate, the left card insertion positioning plate and the right card insertion positioning plate are respectively connected with the fixing plate. The plug-in positioning plates are provided with adjustment holes for installing bolted parts, and the left plug-in positioning plate and the right plug-in positioning plate at the rear end are respectively fixedly installed with a positioning bolt for positioning the hanging connecting steel plate. The positioning bolt can also be replaced by a bare shaft, and the diameter of the bare shaft matches the aperture of the mounting hole of the connecting steel plate; a locking bolt extending outward is fixedly provided on the outer side of one of the fixed plates, and the vertical side of the L-shaped plate is provided with an adjustment long hole for the locking bolt to pass through, the L-shaped plate is suspended on the locking bolt, and the horizontal side of the L-shaped plate is clamped at the bottom end of the leg plate of the arch frame I-beam, and a butterfly nut for locking the L-shaped plate is installed on the locking bolt.

[0009] Further preferably, different numbers of adjustment holes are provided on different parts, for example: 1. The adjustment connecting plate, the left card insert positioning plate and the right card insert positioning plate are respectively provided with a plurality of adjustment holes in the length direction. 2. The adjustment connecting plate is provided with a plurality of adjustment holes in the length direction, and the left card insert positioning plate and the right card insert positioning plate are respectively provided with an adjustment hole. 3. The left card insert positioning plate and the right card insert positioning plate are respectively provided with a plurality of adjustment holes in the length direction, and the adjustment connecting plate has two adjustment holes.

[0010] Further preferably, the bolt connection member is a connecting pin or a connecting bolt, and a nut for locking and fixing the left card insertion positioning plate and the right card insertion positioning plate is installed on the connecting bolt.

[0011] The welding positioning device for connecting steel plates of tunnel steel arch frames is lightweight and easy to operate. It can be used for the positioning and welding of connecting steel plates of various types of tunnel steel arch frames, and can be connected with the steel sections to prevent them from falling due to misoperation. Two fixed plates are used to respectively connect two parallel left card-insertion positioning plates and two parallel right card-insertion positioning plates. The bottoms of the left card-insertion positioning plates and the right card-insertion positioning plates are respectively provided with card slots for inserting into the top of the leg plates of the arch frame I-beams. The left card-insertion positioning plates and the right card-insertion positioning plates are adjustably connected by adjusting the connecting plates and bolted parts. The distance between the left card-insertion positioning plates and the right card-insertion positioning plates can be adjusted according to the different sizes of the steel sections to realize the welding processing of I-beams and connecting plates of different specifications and sizes. An outwardly extending locking bolt is fixedly provided on the outer side of the fixed plate, and the vertical of the L-shaped plate The side is provided with an adjusting long hole for the locking bolt to pass through, the L-shaped plate is suspended on the locking bolt, the horizontal side of the L-shaped plate is clamped at the bottom end of the leg plate of the arch frame I-beam, and the locking bolt is installed with a butterfly nut for locking the L-shaped plate, so that the left card insertion positioning plate and the right card insertion positioning plate are connected to the steel section by a clamping connection to prevent them from falling due to misoperation. Through the positioning device, the relative position of the connecting steel plate and the steel section arch frame can be maintained unchanged, which can facilitate the welding operation of the connecting steel plate and the steel section, ensure that the bolt holes of the connecting steel plate of the steel section arch frame can be aligned during installation, and avoid accidents caused by falling due to misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the working state of the welding positioning device;

[0013] Figure 2 This is a schematic diagram of the placement structure of the welding positioning device;

[0014] Figure 3 It is a schematic diagram of the exploded structure of the welding positioning device;

[0015] The names corresponding to the numbers in the figure are:

[0016] 1. L-shaped plate; 2. Locking bolt; 3. Arch frame I-beam; 4. Butterfly nut; 5. Left card slot positioning plate; 6. Bolt connection; 7. Positioning bolt; 8. Connecting steel plate; 9. Adjustment long hole; 10. Fixing plate; 11. Adjustment hole; 12. Adjustment connecting plate; 13. Right card slot positioning plate; 14. Card slot. DETAILED DESCRIPTION

[0017] In order to describe the present technology more clearly, the present technology is further described in detail below with reference to the accompanying drawings and embodiments. Example

[0018] A welding positioning device for connecting steel plates of tunnel steel arch frames, comprising an L-shaped plate 1, two parallel left card insertion positioning plates 5 and two parallel right card insertion positioning plates 13, one end between the two parallel left card insertion positioning plates 5 and one end between the two parallel right card insertion positioning plates 13 are respectively fixedly connected with a fixing plate 10, the bottoms of the left card insertion positioning plates 5 and the right card insertion positioning plates 13 close to the fixing plate 10 are respectively provided with a card slot 14 for being inserted into the top of the leg plate of the arch frame I-beam 3, and the ends of the left card insertion positioning plates 5 and the right card insertion positioning plates 13 away from the fixing plate 10 are connected by adjusting the connecting plate 12 is connected to the bolt connection member 6, and the adjusting connecting plate 12, the left card insertion positioning plate 5 and the right card insertion positioning plate 13 are all provided with adjustment holes 11 for installing the bolt connection member 6. The left card insertion positioning plate 5 and the right card insertion positioning plate 13 at the rear end are respectively fixedly installed with a positioning bolt 7 for positioning the hanging connecting steel plate 8, and one of the fixing plates 10 is fixedly provided with a locking bolt 2 extending outward on the outer side, and the vertical side of the L-shaped plate 1 is provided with an adjusting long hole 9 for the locking bolt 2 to pass through, and the horizontal side of the L-shaped plate 1 is clamped at the bottom end of the leg plate of the arch frame I-beam 3, and the locking bolt 2 is installed with a butterfly nut 4 for locking the L-shaped plate 1.

[0019] The adjusting connecting plate 12 , the left inserting and positioning plate 5 and the right inserting and positioning plate 13 are respectively provided with a plurality of adjusting holes 11 along the length direction.

[0020] The adjusting connecting plate 12 is provided with a plurality of adjusting holes 11 along the length direction, and the left inserting and positioning plate 5 and the right inserting and positioning plate 13 are respectively provided with an adjusting hole 11 .

[0021] The left card insertion positioning plate 5 and the right card insertion positioning plate 13 are respectively provided with a plurality of adjustment holes 11 along the length direction, and the adjustment connecting plate 12 is correspondingly provided with two adjustment holes 11 .

[0022] The bolt connector 6 is connected with a bolt, and a nut for locking and fixing the left card insertion positioning plate 5 and the right card insertion positioning plate 13 is installed on the connecting bolt.

[0023] The use process of the welding positioning device for connecting steel plates of tunnel steel arch frame is as follows: according to the size of the arch frame I-beam 3, the left card insertion positioning plate 5 and the right card insertion positioning plate 13 are adjusted to a suitable width, and the adjusting connecting plate 12 is connected with the left card insertion positioning plate 5 and the right card insertion positioning plate 13 by using the bolt connector 6, and the card slots 14 of the left card insertion positioning plate 5 and the right card insertion positioning plate 13 are respectively inserted into the top of the leg plates on both sides of the arch frame I-beam 3, the horizontal side of the L-shaped plate 1 is placed on the bottom end of the leg plate of the arch frame I-beam 3, and then the L-shaped plate 1 is lifted upward so that the horizontal side of the L-shaped plate 1 is aligned with the arch frame I-beam 3. The bottom ends of the leg plates of the arch frame I-beam 3 are in contact, and the L-shaped plate 1 is locked on the locking bolt 2 by the butterfly nut 4. The reserved bolt hole of the connecting steel plate 8 is passed through the positioning bolt 7. After the welding surface of the connecting steel plate 8 is pressed against the end face of the arch frame I-beam 3, welding can be carried out. After the welding is firm, the locking bolt 2 is loosened, the L-shaped plate 1 moves down, and the horizontal side of the L-shaped plate 1 is separated from the bottom of the arch frame I-beam 3 by a certain distance. The positioning device can be slid backward, and the positioning bolt 7 is disengaged from the reserved bolt hole of the connecting steel plate 8. The positioning device can be taken out and used for welding another I-beam and the connecting plate.

[0024] The above description is not a limitation of the present application, and the present application is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present application should fall within the scope of protection of the present application.

Claims

1. A welding positioning device for connecting steel plates of tunnel steel arch frames, characterized in that: The invention comprises an L-shaped plate (1), two parallel left card insertion positioning plates (5) and two parallel right card insertion positioning plates (13), one end between the two parallel left card insertion positioning plates (5) and one end between the two parallel right card insertion positioning plates (13) are respectively fixedly connected with a fixing plate (10), the bottoms of the ends of the left card insertion positioning plate (5) and the right card insertion positioning plate (13) close to the fixing plate (10) are respectively provided with card slots (14) for being inserted into the top of the leg plate of the arch frame I-beam (3), the ends of the left card insertion positioning plate (5) and the right card insertion positioning plate (13) away from the fixing plate (10) are connected by an adjusting connecting plate (12) and a bolt (6), and the adjusting connecting plate (12), the left card insertion positioning plate (5) and the right card insertion positioning plate (13) are all provided with adjusting holes (11) for installing the bolt (6), A positioning bolt (7) for positioning the hanging connecting steel plate (8) is fixedly installed on the left and right positioning plates (5) and (13) at the rear end, respectively. A locking bolt (2) extending outward is fixedly installed on the outer side of one of the fixing plates (10). The vertical side of the L-shaped plate (1) is provided with an adjustment long hole (9) for the locking bolt (2) to pass through. The horizontal side of the L-shaped plate (1) is clamped at the bottom end of the leg plate of the arch frame I-beam (3). A butterfly nut (4) for locking the L-shaped plate (1) is installed on the locking bolt (2).

2. The welding positioning device for connecting steel plates of tunnel steel arch frames according to claim 1 is characterized in that: The adjusting connecting plate (12), the left inserting and positioning plate (5) and the right inserting and positioning plate (13) are respectively provided with a plurality of adjusting holes (11) along the length direction.

3. The welding positioning device for connecting steel plates of tunnel steel arch frames according to claim 1 is characterized in that: The adjusting connecting plate (12) is provided with a plurality of adjusting holes (11) along the length direction, and the left inserting positioning plate (5) and the right inserting positioning plate (13) are respectively provided with an adjusting hole (11).

4. The welding positioning device for connecting steel plates of tunnel steel arch frames according to claim 1 is characterized in that: The left card insertion positioning plate (5) and the right card insertion positioning plate (13) are respectively provided with a plurality of adjustment holes (11) along the length direction, and the adjustment connecting plate (12) is correspondingly provided with two adjustment holes (11).

5. The welding positioning device for connecting steel plates of tunnel steel arch frame according to claim 1 is characterized in that: The bolt connection member (6) is a connecting pin or a connecting bolt, and a nut for locking and fixing the left plug-in positioning plate (5) and the right plug-in positioning plate (13) is mounted on the connecting bolt.

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