Positioning tool for welding tunnel steel arch

Abstract

The utility model discloses a positioning tool for tunnel steel arch welding, which comprises a frame body, a sliding seat is mounted at the top of the frame body, an air cylinder fixedly mounted on the ground through a bolt is arranged on the outer side of the frame body, the output end of the air cylinder is fixedly connected with a first push plate through a flange, and a second push plate is fixedly connected with a second push plate through a flange. A transverse rod is fixedly installed on the inner wall of the frame body through bolts, a vertical box is welded to the surface of the transverse rod, and a first motor is fixedly installed on the surface of the vertical box through bolts. The air cylinder and the first push plate are used in cooperation to exert centering thrust in the left-right direction on the arc-shaped I-shaped steel, then the second motor is started to drive the rotating disc to rotate, the rotating disc drives the clamping rods to move through the supporting rods, and then the clamping rods drive the second push plate to exert centering thrust in the front-back direction on the arc-shaped I-shaped steel. Therefore, four-direction center thrust can be applied to the surface of the arc-shaped steel, the accuracy of the position of the arc-shaped I-shaped steel is guaranteed, and the butt joint accuracy of the base plate and the arc-shaped I-shaped steel during welding is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel arch frame welding, in particular to a positioning tool for welding a tunnel steel arch frame. Background Art

[0002] During tunnel excavation, it is usually necessary to use a steel frame for support and protection at the top of the excavated tunnel, so as to prevent the excavated tunnel from collapsing due to the weak support force at the top of the tunnel. The frame usually used for support and protection is a structure with an "I"-shaped protection frame in the middle as the main support component, and pads with threaded holes at both ends of the "I"-shaped protection frame as connecting components; such a structure is arranged along the top of the excavated tunnel, and the connection between two adjacent support and protection frames is to first fix the two pads with threaded holes with bolts, and then reinforce the connection of the two pads with threaded holes by welding. In this way, several support and protection frames are spliced ​​to form a complete frame, thereby providing good support for the top of the excavated tunnel.

[0003] When making a tunnel steel arch frame, it is necessary to first weld the arc-shaped I-beam to the pad in order to proceed with the subsequent welding process. With the advancement of technology, the welding between the arc-shaped I-beam and the pad has been mostly performed by a robotic arm, which has good welding efficiency and welding accuracy. However, some welding devices position the arc-shaped I-beam only by applying thrust to its two ends, and cannot ensure that the position of the arc-shaped I-beam remains aligned in the left and right and front and back directions. Therefore, a positioning tool for tunnel steel arch frame welding is needed, which can apply a four-way centering thrust to the surface of the arc-shaped steel, thereby ensuring the accuracy of the position of the arc-shaped I-beam, thereby improving the accuracy of the docking between the pad and it when welding. Utility Model Content

[0004] The purpose of the utility model is to provide a positioning tool for welding a tunnel steel arch frame, which can apply a four-way centering thrust to the surface of the arc steel, thereby ensuring the accuracy of the position of the arc I-beam, thereby improving the accuracy of the docking between the pad and the I-beam when welding, so as to solve the technical problems raised by the above-mentioned background technology.

[0005] The utility model solves the above-mentioned technical problem with the following technical solution: a positioning tool for welding a tunnel steel arch frame, comprising a frame: a sliding seat is installed on the top of the frame, a cylinder fixedly installed on the ground by bolts is arranged on the outer side of the frame, a push plate 1 is fixedly connected to the output end of the cylinder by a flange, a cross bar is fixedly installed on the inner wall of the frame by bolts, a vertical box is welded on the surface of the cross bar, a motor 1 is fixedly installed on the surface of the vertical box by bolts, a sliding bar is arranged on the inner cavity of the vertical box, a rack is fixedly connected on the surface of the sliding bar by bolts, the output shaft of the motor 1 penetrates the inner cavity of the vertical box and is fixedly connected with a gear by a flange, a cross plate is fixedly connected to the bottom end of the sliding bar, a limit rod and a vertical sleeve are arranged on the outer side of the cross plate, a carrier is fixedly installed on the top of the cross plate, a clamping rod is slidably connected to the surface of the carrier, a push plate 2 is welded on the surface of the clamping rod, a motor 2 is fixedly installed on the top of the carrier by bolts, the output shaft of the motor 2 is fixedly connected to a turntable by a flange, and a support rod is connected between the turntable and the clamping rod for common rotation through a rotating shaft.

[0006] Preferably, the inner wall of the vertical box is fixedly connected with a jacket by bolts, and the inner wall of the jacket is slidably connected to the sliding rod.

[0007] Preferably, the surface of the rack meshes with the gear.

[0008] Preferably, the limit rod is fixedly connected to the horizontal plate, the two ends of the vertical sleeve are fixedly connected to the inner wall of the frame and the ground by bolts respectively, and the surface of the limit rod is slidably connected to the inner wall of the vertical sleeve.

[0009] Preferably, an arc-shaped I-beam is placed on the top of the slide seat, and the surface of the second push plate is matched with the outer side of the arc-shaped I-beam.

[0010] Preferably, a welding robot arm and a pad picking robot arm are installed on the outer side of the frame.

[0011] 1. The beneficial effect of the utility model is as follows: the utility model applies a centering thrust in the left and right directions to the arc-shaped I-beam through the coordinated use of the cylinder and the push plate 1, and then turns on the motor 2 to drive the turntable to rotate, so that the turntable drives the clamping rod to move through the support rod, and then the clamping rod drives the push plate 2 to apply a centering thrust in the front and back directions to the arc-shaped I-beam, so as to achieve the purpose of applying a four-way centering thrust to the surface of the arc-shaped steel, thereby ensuring the accuracy of the position of the arc-shaped I-beam, thereby improving the docking accuracy of the pad and the I-beam when welding.

[0012] 2. The utility model limits the up and down movement of the slide bar in the inner cavity of the vertical box by setting the jacket, thereby avoiding the slide bar from shaking during the movement, thereby ensuring the stability of the position of the slide bar when it slides. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] in:

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0015] Figure 2 This is a three-dimensional schematic diagram of a vertical sleeve and an arc-shaped I-beam in one embodiment of the utility model;

[0016] Figure 3 This is an embodiment of the utility model Figure 2 A partial enlarged view of point A;

[0017] Figure 4 This is a three-dimensional schematic diagram of a clamping rod and a push plate 2 in one embodiment of the utility model;

[0018] Figure 5 It is a three-dimensional schematic diagram of motor 2 and a turntable according to an embodiment of the utility model.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Frame, 2. Sliding seat, 3. Cylinder, 4. Push plate 1, 5. Cross bar, 6. Vertical box, 7. Motor 1, 8. Clamping sleeve, 9. Sliding rod, 10. Rack, 11. Gear, 12. Cross plate, 13. Limit rod, 14. Vertical sleeve, 15. Carrying platform, 16. Clamping rod, 17. Push plate 2, 18. Motor 2, 19. Turntable, 20. Support rod, 21. Arc I-beam. DETAILED DESCRIPTION

[0021] Hereinafter, an embodiment of the positioning tool for welding a tunnel steel arch frame of the present invention will be described with reference to the accompanying drawings.

[0022] Embodiment 1:

[0023] Figure 1-5A positioning tool for welding a tunnel steel arch frame according to an embodiment of the utility model is shown, which includes a frame 1: a sliding seat 2 is installed on the top of the frame 1, a cylinder 3 fixed to the ground by bolts is arranged on the outer side of the frame 1, and a push plate 4 is fixedly connected to the output end of the cylinder 3 by a flange, a cross bar 5 is fixedly installed on the inner wall of the frame 1 by bolts, a vertical box 6 is welded on the surface of the cross bar 5, a motor 7 is fixedly installed on the surface of the vertical box 6 by bolts, a sliding rod 9 is arranged on the inner cavity of the vertical box 6, a jacket 8 is fixedly connected to the inner wall of the vertical box 6 by bolts, and a sliding connection is made between the inner wall of the jacket 8 and the sliding rod 9, and the sliding rod 9 is limited in the up and down movement in the inner cavity of the vertical box 6 by the setting of the jacket 8, so as to avoid the sliding rod 9 from shaking during the movement, thereby ensuring the stability of the position of the sliding rod 9 when it slides, and the surface of the sliding rod 9 is fixedly connected with a toothed structure by bolts The output shaft of the motor 7 passes through the inner cavity of the vertical box 6 and is fixedly connected with a gear 11 through a flange. The surface of the rack 10 is meshed with the gear 11. The bottom end of the slide bar 9 is fixedly connected with a horizontal plate 12. A limit rod 13 and a vertical sleeve 14 are arranged on the outer side of the horizontal plate 12. The limit rod 13 is fixedly connected to the horizontal plate 12. The two ends of the vertical sleeve 14 are respectively fixedly connected to the inner wall of the frame 1 and the ground by bolts. The surface of the limit rod 13 is slidably connected with the inner wall of the vertical sleeve 14. A carrier 15 is fixedly installed on the top of the horizontal plate 12. A clamping rod 16 is slidably connected to the surface of the carrier 15. A push plate 2 17 is welded to the surface of the clamping rod 16. A motor 2 18 is fixedly installed on the top of the carrier 15 by bolts. The output shaft of the motor 2 18 is fixedly connected with a turntable 19 through a flange. The turntable 19 and the clamping rod 16 are connected with a support rod 20 for rotating together through a rotating shaft.

[0024] Embodiment 2:

[0025] Figure 1-5A positioning tool for welding a tunnel steel arch frame according to an embodiment of the utility model is shown, which includes a frame 1: a slide seat 2 is installed on the top of the frame 1, a cylinder 3 fixed to the ground by bolts is arranged on the outer side of the frame 1, and a push plate 4 is fixedly connected to the output end of the cylinder 3 by a flange, a cross bar 5 is fixedly installed on the inner wall of the frame 1 by bolts, a vertical box 6 is welded on the surface of the cross bar 5, a motor 7 is fixedly installed on the surface of the vertical box 6 by bolts, a slide bar 9 is arranged in the inner cavity of the vertical box 6, a rack 10 is fixedly connected to the surface of the slide bar 9 by bolts, the output shaft of the motor 7 passes through the inner cavity of the vertical box 6 and is fixedly connected to the gear 11 by a flange, and the bottom end of the slide bar 9 A horizontal plate 12 is fixedly connected, and a limit rod 13 and a vertical sleeve 14 are arranged on the outer side of the horizontal plate 12. A carrier 15 is fixedly installed on the top of the horizontal plate 12. A clamping rod 16 is slidably connected to the surface of the carrier 15. A push plate 17 is welded to the surface of the clamping rod 16. A motor 18 is fixedly installed on the top of the carrier 15 by bolts. A turntable 19 is fixedly connected to the output shaft of the motor 18 by a flange. A support rod 20 is connected between the turntable 19 and the clamping rod 16 for common rotation through a rotating shaft. An arc-shaped I-beam 21 is placed on the top of the slide 2. The surface of the push plate 17 is matched with the outer side of the arc-shaped I-beam 21. A welding machine arm and a pad picking machine arm are installed on the outer side of the frame 1.

[0026] Working principle: When the utility model is used, the user applies a central thrust in the left and right directions to the arc-shaped I-beam 21 through the cooperation of the cylinder 3 and the push plate 1 4, and then turns on the motor 1 7 to drive the gear 11 to rotate, and then the gear 11 drives the horizontal plate 12 to move up through the slide rod 9. In this process, the cooperation of the limit rod 13 and the vertical sleeve 14 can ensure the stability of the horizontal plate 12 during the movement, and then the horizontal plate 12 drives the carrier 15 to move up, and then the motor 2 18 is turned on to drive the turntable 19 to rotate, so that the turntable 19 drives the support rod 20 to move upward. The clamp rod 16 moves on the top of the carrier 15, and then drives the push plate 17 to apply a centering thrust in the front and rear directions to the arc-shaped I-beam 21, so that the arc-shaped I-beam 21 can be centered and corrected. Then the carrier 15 moves down, and then the slide 2 moves backward. The pad can be welded to the end of the arc-shaped I-beam 21 through the cooperation of the welding robot arm and the pad picking robot arm, so that the surface of the arc-shaped steel is applied with a four-way centering thrust, thereby ensuring the accuracy of the position of the arc-shaped I-beam, thereby improving the accuracy of the pad when it is welded.

[0027] To sum up: the positioning fixture for welding the tunnel steel arch frame applies a centering thrust in the left and right directions to the arc-shaped I-beam 21 through the coordinated use of the cylinder 3 and the push plate 1 4, and then turns on the motor 2 18 to drive the turntable 19 to rotate, so that the turntable 19 drives the clamping rod 16 to move through the support rod 20, and then the clamping rod 16 drives the push plate 2 17 to apply a centering thrust in the front and rear directions to the arc-shaped I-beam 21, so as to achieve the purpose of applying a four-way centering thrust to the surface of the arc-shaped steel, thereby ensuring the accuracy of the position of the arc-shaped I-beam, thereby improving the docking accuracy of the pad and it when welding.

Claims

1. A positioning tool for welding a tunnel steel arch frame, characterized in that: The invention comprises a frame (1): a sliding seat (2) is installed on the top of the frame (1); a cylinder (3) is arranged on the outside of the frame (1) and fixedly installed on the ground by bolts; the output end of the cylinder (3) is fixedly connected to a push plate (4) by a flange; a cross bar (5) is fixedly installed on the inner wall of the frame (1) by bolts; a vertical box (6) is welded to the surface of the cross bar (5); a motor (7) is fixedly installed on the surface of the vertical box (6) by bolts; a sliding bar (9) is arranged in the inner cavity of the vertical box (6); a rack (10) is fixedly connected to the surface of the sliding bar (9) by bolts; the output shaft of the motor (7) passes through the inner cavity of the vertical box (6) and passes through the inner cavity of the vertical box (6). A gear (11) is fixedly connected via a flange, a horizontal plate (12) is fixedly connected to the bottom end of the slide rod (9), a limit rod (13) and a vertical sleeve (14) are arranged on the outer side of the horizontal plate (12), a carrier (15) is fixedly installed on the top of the horizontal plate (12), a clamping rod (16) is slidably connected to the surface of the carrier (15), a push plate 2 (17) is welded to the surface of the clamping rod (16), a motor 2 (18) is fixedly installed on the top of the carrier (15) by bolts, an output shaft of the motor 2 (18) is fixedly connected to a turntable (19) via a flange, and a support rod (20) is connected between the turntable (19) and the clamping rod (16) for common rotation via a rotating shaft.

2. A positioning tool for welding a tunnel steel arch according to claim 1, characterized in that: The inner wall of the vertical box (6) is fixedly connected with a jacket (8) by means of bolts, and the inner wall of the jacket (8) is slidably connected to a slide rod (9).

3. A positioning tool for tunnel steel arch welding according to claim 2, characterized in that: The surface of the rack (10) is meshed with the gear (11).

4. A positioning tool for welding a tunnel steel arch according to claim 3, characterized in that: The limiting rod (13) is fixedly connected to the horizontal plate (12), and the two ends of the vertical sleeve (14) are respectively fixedly connected to the inner wall of the frame (1) and the ground by bolts, and the surface of the limiting rod (13) is slidably connected to the inner wall of the vertical sleeve (14).

5. A positioning tool for welding a tunnel steel arch according to claim 4, characterized in that: An arc-shaped I-beam (21) is placed on the top of the slide seat (2), and the surface of the second push plate (17) is matched with the outer side of the arc-shaped I-beam (21).

6. A positioning tool for welding a tunnel steel arch according to claim 5, characterized in that: A welding machine arm and a pad picking machine arm are installed on the outer side of the frame (1).

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