A steel pipe arch rib installation and positioning device

Abstract

This utility model relates to the technical field of auxiliary devices for bridge construction, and discloses a steel pipe arch rib installation and positioning device, including a workbench. A protractor is installed at the center of the top of the workbench. An indicator light is installed on the top of the workbench in front of the protractor. A vertical plate is fixedly connected to the top of the workbench behind the protractor. A bushing is rotatably connected to the upper front of the vertical plate. An adapter rod is fixedly connected to the front of the bushing. A screw is provided on the inner wall of the bushing. The outer wall of the screw is threaded to the upper side of the inner wall of the vertical plate. The front of the screw passes through a slot in the inner wall of the adapter rod. This utility model, through the cooperation of the vertical plate, bushing, adapter rod, infrared connector, laser screw, knob, pressure ring, and protractor, plays a role in calibrating the position during the installation of steel pipe arch ribs, thereby improving the positioning accuracy during arch rib installation and ensuring the safety and quality of the project.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary devices for bridge construction, specifically a steel pipe arch rib installation and positioning device. Background Technology

[0002] Steel pipe arch ribs are the main load-bearing structure of arch bridges. They are made of steel pipes welded or spliced ​​into an arch shape. The material is mostly high-strength steel, and the cross-section can be circular, polygonal, etc. They are lightweight and high-strength, and can be prefabricated in the factory and then installed on site. They are suitable for long-span bridges, such as highway and railway bridges, and have both mechanical properties and construction convenience. They are widely used in modern bridge engineering.

[0003] In the construction of steel pipe arch ribs, multiple precast components need to be connected and installed on site. The positioning accuracy directly affects the structural stress and stability. Traditional manual measurement and positioning is inefficient, easily affected by environmental interference, and cannot meet the millimeter-level connection requirements of large-span arch ribs, resulting in extended construction period and potential structural safety hazards.

[0004] In order to facilitate the positioning of multiple arch ribs, this application proposes a steel pipe arch rib installation and positioning device. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a steel pipe arch rib installation and positioning device, which improves the positioning accuracy during arch rib installation, thereby ensuring the safety and quality of the project.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a steel pipe arch rib installation and positioning device, comprising a workbench, a protractor installed at the center of the top of the workbench, an indicator light installed on the top of the workbench in front of the protractor, a vertical plate fixedly connected to the top of the workbench behind the protractor, a bushing rotatably connected to the upper front of the vertical plate, a converter rod fixedly connected to the front of the bushing, a screw provided on the inner wall of the bushing, the outer wall of the screw threadedly connected to the upper side of the inner wall of the vertical plate, and the front end of the screw penetrating a slot in the inner wall of the converter rod.

[0007] Further description: A knob is fixedly connected to the front end of the screw, and a pressure ring is fixedly connected to the rear end of the knob on the outside of the screw; here, the contact area between the pressure ring and the surface of the adapter rod is smaller than the contact area between the knob and the surface of the adapter rod, so the pressure is relatively increased and the clamping effect is improved.

[0008] Further description: An infrared connector is fixedly connected to the top of the adapter rod, and a laser light is fixedly connected to the lower front end of the adapter rod; here, the infrared connector is used to receive infrared rays, generate electrical signals after receiving them, and transmit them to the display terminal.

[0009] Further description: A slide cylinder is fixedly connected to the middle of the bottom end of the workbench, and a slide rod is slidably connected to the inner wall of the bottom end of the slide cylinder. A base plate is fixedly connected to the bottom end of the slide rod. Here, the vertical outer wall of the slide rod is cylindrical, which can reduce the resistance during sliding.

[0010] Further description: A ground nail is fixedly connected to the middle of the bottom end of the base plate, and notches are opened on all four sides of the top of the base plate; here, the ground nail is used to insert into holes opened in the ground in advance to position the device.

[0011] Further description: A sliding disc is slidably connected to the inner wall of the sliding cylinder, and the bottom end of the sliding disc is fixedly connected to the top end of the sliding rod; here, the inner wall of the sliding cylinder provides a movement trajectory for the sliding disc.

[0012] Further description: A spring is fixedly connected to the bottom end of the slide plate outside the slide rod, and the bottom end of the spring is fixedly connected to the inner wall of the slide cylinder; here, the spring has elastic potential energy after being compressed, which will drive the connected object to return to its original position.

[0013] Further description: Support columns are fixedly connected to the four corners of the bottom of the workbench, and casters are installed at the bottom of each support column; here, the casters are equipped with a braking mechanism.

[0014] Beneficial effects:

[0015] 1. In this utility model, the vertical plate, bushing, adapter rod, infrared connector, laser lamp screw, knob, pressure ring, and protractor work together to calibrate the position during the installation of the steel pipe arch rib, thereby improving the positioning accuracy of the arch rib during installation and ensuring the safety and quality of the project.

[0016] 2. In this utility model, through the cooperation of the sliding cylinder, sliding plate, sliding rod, spring, base plate, notch groove, and ground nail, the positioning device can play a role in reinforcement and limiting when placed in a designated position, thereby improving the accuracy of the device's position. Attached Figure Description

[0017] Figure 1 This is a perspective view of a steel pipe arch rib installation and positioning device according to the present invention;

[0018] Figure 2 This is a cross-sectional view of the vertical plate of a steel pipe arch rib installation and positioning device according to the present invention;

[0019] Figure 3 This is a schematic diagram of the pressure ring structure of a steel pipe arch rib installation and positioning device according to the present invention;

[0020] Figure 4 This is a cross-sectional view of the sliding cylinder of a steel pipe arch rib installation and positioning device according to the present invention.

[0021] In the diagram: 1. Workbench; 2. Support column; 3. Casters; 4. Slide cylinder; 5. Protractor; 6. Indicator light; 7. Vertical plate; 8. Adapter rod; 9. Bushing; 10. Infrared connector; 11. Laser light; 12. Screw; 13. Knob; 14. Pressure ring; 15. Slide plate; 16. Spring; 17. Base plate; 18. Notch groove; 19. Ground nail; 20. Slide 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] Example 1

[0024] Please see Figures 1-3 A steel pipe arch rib installation and positioning device includes a workbench 1, a protractor 5 installed at the top center of the workbench 1, an indicator light 6 installed at the top of the workbench 1 in front of the protractor 5, a vertical plate 7 fixedly connected to the top of the workbench 1 behind the protractor 5, a bushing 9 rotatably connected to the upper front end of the vertical plate 7, a converter rod 8 fixedly connected to the front end of the bushing 9, a screw 12 provided on the inner wall of the bushing 9, the outer wall of the screw 12 threadedly connected to the upper side of the inner wall of the vertical plate 7, the front end of the screw 12 penetrating through a slot in the inner wall of the converter rod 8, a knob 13 fixedly connected to the front end of the screw 12, a pressure ring 14 fixedly connected to the rear end of the knob 13 outside the screw 12, an infrared connector 10 fixedly connected to the top end of the converter rod 8, and a laser light 11 fixedly connected to the lower front end of the converter rod 8.

[0025] To further explain, firstly, the staff measures the center point between the arch seats of the two piers on the bridge, pushes the device to that center point, then places an infrared laser emitter at the center of the segmented arch rib surface. Subsequently, the center point of the segmented arch rib and the center point of the horizontal height of the bushing 9 are compared with the design drawing, the two points are plotted, and the angle between the plotted line and the center point of the horizontal plane of the bushing 9 is measured. Then, according to the angle, the adapter rod 8 is rotated, so that the laser emitted by the laser lamp 11 moves on the surface of the protractor 5 and serves as the center reference of the adapter rod 8. Next, according to the angle in the design drawing, the adapter rod 8 is tilted to the corresponding angle, and then the knob 13 is rotated, so that the screw 12 slides backward on the inner wall of the vertical plate 7 until the pressure ring 14 is close to the front end of the adapter rod 8, and the bushing 9 is used to press it into an inclined state.

[0026] Next, a crane is used to lift the arch rib, keeping the infrared transmitter facing downwards. The position of the arch rib is gradually adjusted by the crane. When the infrared rays emitted by the infrared transmitter illuminate the infrared connector 10, the infrared connector 10 receives the light signal and then converts it into an electrical signal, which is then transmitted to the indicator light 6 of the electrical connection. The top of the indicator light 6 changes from red to green, reminding the staff that the position of this section of the arch rib has been calibrated. This completes the positioning of the steel pipe arch rib.

[0027] Example 2

[0028] Please see Figure 4 Further, based on Embodiment 1, a slide cylinder 4 is fixedly connected to the middle of the bottom end of the workbench 1. A slide rod 20 is slidably connected to the inner wall of the bottom end of the slide cylinder 4. A base plate 17 is fixedly connected to the bottom end of the slide rod 20. A ground nail 19 is fixedly connected to the middle of the bottom end of the base plate 17. A notch 18 is provided on all four sides of the top of the base plate 17. A slide disc 15 is slidably connected to the inner wall of the slide cylinder 4. The bottom end of the slide disc 15 is fixedly connected to the top of the slide rod 20. A spring 16 is fixedly connected to the bottom end of the slide disc 15 outside the slide rod 20. The bottom end of the spring 16 is fixedly connected to the inner wall of the slide cylinder 4. Support columns 2 are fixedly connected to the four corners of the bottom end of the workbench 1. A caster wheel 3 is installed at the bottom end of each support column 2.

[0029] To further explain, the workers measured the center point between the arches of the two bridge piers, then drilled a hole in the ground at that point. Next, they pushed the workbench 1 above the hole, aligned the ground nail 19 with the hole, and pulled it down to insert it. During the pulling down process, the slide rod 20 drove the slide plate 15 to slide and squeeze the spring 16. After the ground nail 19 was inserted into the hole, the counterweight was taken out from the tool box at the bottom of the workbench 1 and placed into the notch groove 18 in sequence to position the base plate 17 and provide a limit for the workbench 1 to prevent the device from shifting during operation.

[0030] Working principle: First, the staff measures the center point between the arches of the two bridge piers on the bridge. Then, a hole is drilled in the ground at that point. Next, the workbench 1 is pushed above the hole, and the ground nail 19 is aligned with the hole and pulled down to insert. During the pulling down process, the slide rod 20 drives the slide plate 15 to slide and compress the spring 16. After the ground nail 19 is inserted into the hole, the counterweight block in the tool box at the bottom of the workbench 1 is taken out and placed in the notch groove 18 to position the base plate 17. This provides a limiting effect for the workbench 1 and prevents the workbench 1 from shifting during operation.

[0031] Next, an infrared laser emitter is placed at the center of the segmented arch rib surface. Then, the center point of the segmented arch rib is aligned with the horizontal height of the bushing 9 on the design drawing, and the two points are plotted. The angle formed between the plotted line and the horizontal plane of the bushing 9 is measured. Then, the adapter rod 8 is rotated so that the laser emitted by the laser lamp 11 moves on the surface of the protractor 5 and serves as a reference for the center of the adapter rod 8. Next, according to the angle on the design drawing, the adapter rod 8 is tilted to the corresponding angle. Then, the knob 13 is rotated so that the screw 12 is in the inner wall of the vertical plate 7. Slide the threaded section backward until the pressure ring 14 is close to the front end of the adapter rod 8, so that the pressure ring 14, together with the bushing 9, presses the adapter rod 8 into its tilted state. Then, use a crane to lift the arch rib with the infrared transmitter facing downward. Gradually adjust the position of the arch rib with the crane until the infrared rays emitted by the infrared transmitter illuminate the infrared connector 10. The infrared connector 10 receives the light signal, and the top of the indicator light 6 changes from red to green, reminding the staff that the arch rib has been calibrated. This completes the positioning of the steel pipe arch rib.

[0032] Although embodiments of the present invention 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 the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning device for installing a steel pipe arch rib, comprising a workbench (1), characterized in that: A protractor (5) is installed at the top center of the workbench (1). An indicator light (6) is installed at the top of the workbench (1) in front of the protractor (5). A vertical plate (7) is fixedly connected to the top of the workbench (1) behind the protractor (5). A bushing (9) is rotatably connected to the upper front end of the vertical plate (7). An adapter rod (8) is fixedly connected to the front end of the bushing (9). A screw (12) is provided on the inner wall of the bushing (9). The outer wall of the screw (12) is threaded to the upper side of the inner wall of the vertical plate (7). The front end of the screw (12) passes through the hole groove in the inner wall of the adapter rod (8).

2. The positioning device for installing a steel pipe arch rib according to claim 1, wherein: A knob (13) is fixedly connected to the front end of the screw (12), and a pressure ring (14) is fixedly connected to the rear end of the knob (13) outside the screw (12).

3. The positioning device for installing a steel pipe arch rib according to claim 1, wherein: An infrared connector (10) is fixedly connected to the top of the adapter rod (8), and a laser lamp (11) is fixedly connected to the lower front end of the adapter rod (8).

4. The steel pipe arch rib installation positioning device according to claim 1, characterized in that: A slide cylinder (4) is fixedly connected to the middle of the bottom end of the workbench (1), and a slide rod (20) is slidably connected to the inner wall of the bottom end of the slide cylinder (4). A base plate (17) is fixedly connected to the bottom end of the slide rod (20).

5. A steel pipe arch rib installation positioning device according to claim 4, characterized in that: The bottom of the base plate (17) is fixedly connected to a ground nail (19), and the top of the base plate (17) has notches (18) on all four sides.

6. A steel pipe arch rib installation positioning device according to claim 4, characterized in that: The inner wall of the slide cylinder (4) is slidably connected to a slide plate (15), and the bottom end of the slide plate (15) is fixedly connected to the top end of the slide rod (20).

7. A steel pipe arch rib installation positioning device according to claim 6, characterized by: The bottom end of the slide plate (15) is fixedly connected to a spring (16) on the outside of the slide rod (20), and the bottom end of the spring (16) is fixedly connected to the inner wall of the slide cylinder (4).

8. The steel pipe arch rib installation positioning device according to claim 1, characterized in that: The workbench (1) is fixedly connected to four corners at the bottom of each of the four corners of the workbench (1), and each of the four corners of the workbench (2) is equipped with casters (3).

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