Rapid positioning auxiliary device for tunnel lining reinforcing steel bars

Abstract

The utility model discloses a tunnel lining steel bar rapid positioning auxiliary device which comprises a frame, idler wheels are rotatably installed at the two ends of the frame, connecting arms are rotatably installed at the two ends of the top in the frame, a top pressing plate is rotatably installed at the other end of each connecting arm, and a positioning mechanism is slidably installed at one end of each top pressing plate. Through the design of the positioning mechanism, the distance between the positioning plates can be adjusted, the distance can be perfectly matched with the diameter of the steel bar, and the problem that the steel bar is difficult to install or displaces due to mismatching of positioning calibers is solved.

Description

Technical Field

[0001] This utility model relates to the field of building technology, specifically to a rapid positioning auxiliary device for tunnel lining steel bars. Background Technology

[0002] Tunnel lining refers to the permanent structure that supports and maintains the long-term stability and durability of a tunnel. It needs sufficient strength to prevent the tunnel from collapsing, so reinforcing steel bars are pre-embedded within the tunnel lining.

[0003] For example, the national authorized patent announcement number CN219101369U discloses a positioning clamp for tunnel lining reinforcement, relating to the construction field. It includes a vertically arranged support rod, with two connecting rods rotatably connected to the support rod. A locking plate is rotatably connected to the connecting rod and the support rod. The locking plate has a locking groove for positioning the reinforcement. A support frame for supporting the support rod is detachably connected to the bottom of the support rod. A locking component for locking the connecting rod is provided on the support rod. The locking plate has a locking component for locking the locking plate to the support rod or connecting rod. This application has the effect of facilitating the positioning of tunnel lining reinforcement.

[0004] However, the aforementioned tunnel lining rebar positioning clamps cannot be adjusted according to the diameter of the rebar to match the positioning opening. This means that when encountering rebars of different diameters, it is necessary to frequently change clamps of different specifications or spend extra time finding suitable clamps, which greatly increases construction time and reduces construction efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a quick positioning auxiliary device for tunnel lining reinforcement, so as to solve the problem mentioned in the background art that the positioning aperture cannot be extended according to the diameter of the reinforcement to match the clamp during the positioning process.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A rapid positioning auxiliary device for tunnel lining reinforcement includes: a frame, with rollers rotatably installed at both ends of the frame, connecting arms rotatably installed at both ends of the top of the frame, a top pressure plate rotatably installed at the other end of the connecting arm, and a positioning mechanism slidably installed at one end of the top pressure plate.

[0008] Preferably, a U-shaped frame is fixedly installed inside the frame, and a first electric push rod is rotatably installed inside the U-shaped frame. The piston rod of the first electric push rod is rotatably installed inside the H-shaped frame, and the H-shaped frame is fixedly installed in the middle section of the outer surface of the connecting arm, so that the first electric push rod can drive the top pressure plate to be lifted by pushing the connecting arm.

[0009] Preferably, a second electric push rod is rotatably mounted inside the other end of the H-shaped frame, and the piston rod of the second electric push rod is rotatably mounted on the other end of the top pressure plate, so that the second electric push rod can push the top pressure plate to rotate at one end of the connecting arm.

[0010] Preferably, the positioning mechanism includes two sets of third electric push rods, which are fixedly installed opposite to each other at one end of the top pressure plate. An L-shaped rotating rod is fixedly installed at one end of the piston rod of each third electric push rod, and a scissor-type telescopic frame is rotatably installed at one end of each set of L-shaped rotating rods. A positioning plate is rotatably installed at one end of the central rotating shaft of each set of scissor-type telescopic frames.

[0011] Preferably, the positioning plate is U-shaped, so that the positioning plate slides in the guide groove through the L-shaped bends at the upper and lower ends, and the guide groove is opened at one end of the top pressure plate.

[0012] Preferably, each set of positioning plates has 90° arc surfaces at both ends, so that each set of positioning plates can be spliced ​​together to form a 180° semi-circular surface that presses against the outer surface of the reinforcing bar. The positioning plates can also be extended at equal intervals by the extension of the scissor-type telescopic frame to match reinforcing bars of different diameters.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Through the design of the frame, U-shaped frame, connecting arm, first electric push rod, top pressure plate, second electric push rod, and positioning mechanism, when positioning the steel mesh in the tunnel, the staff can adjust the spacing of the positioning mechanism according to the diameter of the steel bars. Then, the staff can push the frame to the center of the tunnel. Subsequently, the two sets of first electric push rods can be activated to push the two sets of connecting arms to lift the positioning mechanism, which is slidably installed at one end of the top pressure plate, to both ends in a Y shape. During the lifting of the top pressure plate, the second electric push rod can also be activated to push or pull the top pressure plate to rotate at one end of the connecting arm to match the bending angle and pressing position of the steel bars. This ensures the accuracy of the steel bar positioning and the installation quality of the steel mesh. The top pressure plate can drive the positioning mechanism, which is slidably installed at one end, to press against the outer surface of the steel bars to achieve the positioning of the steel bars. The spacing adjustment through the positioning mechanism can perfectly match the diameter of the steel bars, avoiding the difficulties in steel bar installation or displacement caused by mismatch in positioning diameter.

[0015] 2. Through the design of the scissor-type telescopic frame, positioning plates, and third electric push rod, when positioning and adjusting the diameter of the reinforcing bars, the third electric push rod can be activated to drive the L-shaped rotating rod to push the central rotating shaft of the scissor-type telescopic frame. This allows the positioning plates installed at one end of each set of central rotating shafts to unfold at equal intervals to match reinforcing bars of different diameters. This avoids difficulties in reinforcing bar installation or displacement caused by mismatched positioning diameters. Furthermore, when multiple sets of positioning plates are pushed at equal intervals by the scissor-type telescopic frame, they will slide horizontally in the guide groove opened at one end of the top pressure plate, making the unfolding of each set of positioning plates more stable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the tunnel lining steel reinforcement quick positioning auxiliary device of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the positioning plate of this utility model being lifted up;

[0018] Figure 3 This is a schematic diagram of the structure of the first and second electric push rods of this utility model.

[0019] Figure 4 This is a schematic diagram of the scissor-type telescopic frame of the present invention, which is pushed to extend to both ends by a third electric push rod.

[0020] Figure 5 This is a schematic diagram of the structure in which the third electric push rod of this utility model is rotatably connected to the central shaft of the scissor-type telescopic frame.

[0021] In the diagram: 1. Frame; 101. U-shaped frame; 102. Connecting arm; 103. First electric push rod; 104. Top pressure plate; 105. H-shaped frame; 106. Second electric push rod; 107. Guide groove; 2. Positioning mechanism; 201. Scissor-type telescopic frame; 202. Positioning plate; 203. Third electric push rod; 204. L-shaped rotating rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 This embodiment provides the following technical solution:

[0024] like Figures 1-3As shown, a quick positioning auxiliary device for tunnel lining reinforcement includes: a frame 1, with rollers rotatably installed at both ends of the frame 1, and connecting arms 102 rotatably installed at both ends of the top of the frame 1, with a top pressure plate 104 rotatably installed at the other end of the connecting arm 102, and a positioning mechanism 2 slidably installed at one end of the top pressure plate 104.

[0025] A U-shaped frame 101 is fixedly installed inside the frame 1. A first electric push rod 103 is rotatably installed inside the U-shaped frame 101. The piston rod of the first electric push rod 103 is rotatably installed inside the H-shaped frame 105. The H-shaped frame 105 is fixedly installed in the middle section of the outer surface of the connecting arm 102, so that the first electric push rod 103 can drive the top pressure plate 104 to be lifted by pushing the connecting arm 102.

[0026] A second electric push rod 106 is rotatably mounted inside the other end of the H-shaped frame 105. The piston rod of the second electric push rod 106 is rotatably mounted on the other end of the top pressure plate 104, so that the second electric push rod 106 can push the top pressure plate 104 to rotate at one end of the connecting arm 102.

[0027] Through the design of frame 1, U-shaped frame 101, connecting arm 102, first electric push rod 103, top pressure plate 104, second electric push rod 106, and positioning mechanism 2, when positioning the steel mesh in the tunnel, the frame 1 can be pushed to the center of the tunnel by the workers, allowing them to adjust the spacing of the positioning mechanism 2 according to the diameter of the steel bars. Then, the two sets of first electric push rods 103 can be activated to push the two sets of connecting arms 102, causing the positioning mechanism 2, which is slidably installed at one end of the top pressure plate 104, to rise to both ends in a Y-shape. This lifting of the top pressure plate 104... During the process, the second electric push rod 106 can also be activated to push or pull the top pressure plate 104 to rotate at one end of the connecting arm 102 to match the angle of the bent steel bar and the top pressure position, thereby ensuring the accuracy of the steel bar positioning in all aspects and ensuring the installation quality of the steel mesh. In addition, the top pressure plate 104 can drive the positioning mechanism 2, which is slidably installed at one end, to press against the outer surface of the steel bar to achieve the positioning of the steel bar. The spacing adjustment made by the positioning mechanism 2 can perfectly match the diameter of the steel bar, avoiding the difficulties in steel bar installation or displacement caused by mismatch in positioning diameter.

[0028] like Figures 4-5 As shown, the positioning mechanism 2 includes two sets of third electric push rods 203. The two sets of third electric push rods 203 are fixedly installed in opposite directions at one end of the top pressure plate 104. An L-shaped rotating rod 204 is fixedly installed at one end of the piston rod of the third electric push rod 203. A scissor-type telescopic frame 201 is rotatably installed at one end of the two sets of L-shaped rotating rods 204. A positioning plate 202 is rotatably installed at one end of the central rotating shaft of each set of scissor-type telescopic frames 201.

[0029] The positioning plate 202 is U-shaped, so that the positioning plate 202 slides in the guide groove 107 through the L-shaped bends at the upper and lower ends. The guide groove 107 is opened at one end of the top pressure plate 104.

[0030] Each positioning plate 202 has 90° arc surfaces at both ends, so that each positioning plate 202 can be spliced ​​together to form a 180° semi-circular surface to press against the outer surface of the steel bar. The positioning plates 202 can also be extended at equal intervals by the extension of the scissor-type telescopic frame 201 to match steel bars of different diameters.

[0031] Through the design of the scissor-type telescopic frame 201, positioning plate 202, and third electric push rod 203, when positioning and adjusting the diameter of the reinforcing bars, the third electric push rod 203 can be activated to drive the L-shaped rotating rod 204 to push the central rotating shaft of the scissor-type telescopic frame 201. This allows the positioning plates 202, which are rotated at one end of each set of central rotating shafts, to unfold at equal intervals to match reinforcing bars of different diameters. This avoids difficulties in reinforcing bar installation or displacement caused by mismatched positioning diameters. Furthermore, when multiple sets of positioning plates 202 are pushed at equal intervals by the scissor-type telescopic frame 201, they will slide horizontally within the guide groove 107 opened at one end of the top pressure plate 104, making the unfolding of each set of positioning plates 202 more stable.

[0032] Based on the above technical solution, the working steps of this solution are summarized as follows: When positioning the steel mesh inside the tunnel, the workers push the frame 1 to the center of the tunnel. Then, according to the diameter of the steel bars, the workers can activate the third electric push rod 203 to drive the L-shaped rotating rod 204 to push the central rotating shaft of the scissor-type telescopic frame 201. This allows the positioning plates 202 installed at one end of each set of central rotating shafts of the scissor-type telescopic frame 201 to unfold at equal intervals to match the diameter of the steel bars. Subsequently, the two sets of first electric push rods 103 can be activated to push the two... The connecting arm 102 drives the positioning mechanism 2, which is slidably installed at one end of the top pressure plate 104, to lift to both ends in a Y-shape. During the lifting of the top pressure plate 104, the second electric push rod 106 can also be activated to push or pull the top pressure plate 104 to rotate at one end of the connecting arm 102 to match the angle of the bent steel bar and the pressing position, thereby ensuring the accuracy of the steel bar positioning in all aspects and ensuring the installation quality of the steel mesh. In turn, the top pressure plate 104 drives the positioning plate 202, which is slidably installed at one end, to press against the outer surface of the steel bar to achieve the positioning of the steel bar.

[0033] In summary, by adjusting the spacing of the positioning plate 202, it is possible to perfectly match the diameter of the reinforcing bar, thus avoiding difficulties in reinforcing bar installation or displacement problems caused by mismatch in positioning diameter.

[0034] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fast positioning aid for tunnel lining reinforcement, characterized in that, The utility model provides a frame (1) both ends of which are rotatably installed with a roller, the top of the frame (1) is rotatably installed with a connecting arm (102) at both ends, the other end of the connecting arm (102) is rotatably installed with a top pressing plate (104), and one end of the top pressing plate (104) is slidably installed with a positioning mechanism (2). The frame (1) is fixedly installed with a U-shaped frame (101) inside, the first electric push rod (103) is rotatably installed in the U-shaped frame (101), the piston rod of the first electric push rod (103) is rotatably installed in an H-shaped frame (105), the H-shaped frame (105) is fixedly installed on the outer surface of the middle section of the connecting arm (102), so that the first electric push rod (103) can drive the top pressing plate (104) to lift by pushing the connecting arm (102).

2. A rapid positioning aid for tunnel lining reinforcement according to claim 1, characterized in that: The other end of the H-shaped frame (105) is rotatably installed with a second electric push rod (106), the piston rod of the second electric push rod (106) is rotatably installed at the other end of the top pressing plate (104), and the second electric push rod (106) can rotate at one end of the connecting arm (102) by pushing the top pressing plate (104).

3. A rapid positioning aid for tunnel lining reinforcement according to claim 2, characterized in that: The positioning mechanism (2) comprises two groups of third electric push rods (203), the two groups of third electric push rods (203) are fixedly installed at one end of the top pressing plate (104) in a relative mode, the piston rod of the third electric push rod (203) is fixedly installed with an L-shaped rotating rod (204) at one end, one end of the two groups of L-shaped rotating rods (204) is rotatably installed with a scissor type telescopic frame (201), and one end of the central rotating shaft of each group of scissor type telescopic frames (201) is rotatably installed with a positioning plate (202).

4. A rapid positioning aid for tunnel lining reinforcement according to claim 3, characterized in that: The positioning plate (202) is in the shape of a U, so that the positioning plate (202) can slide in the guide groove (107) through the L-shaped bending angle at the upper end and the lower end, and the guide groove (107) is formed at one end of the top pressing plate (104).

5. A rapid positioning aid for tunnel lining reinforcement according to claim 4, characterized in that: The two ends of each group of positioning plates (202) are formed with an arc surface with an angle of 90 degrees, so that each group of positioning plates (202) can be spliced into a half-ring surface with an angle of 180 degrees to press on the outer surface of the reinforcing steel bar, and the positioning plate (202) can be expanded at equal distances to match reinforcing steel bars with different diameters by the extension of the scissor type telescopic frame (201).

6. A rapid positioning aid for tunnel lining reinforcement according to claim 3, characterized in that: ​

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