Steel tube arch bridge hoisting positioning angle measuring and adjusting device

Abstract

The utility model relates to a steel tube arch bridge hoisting positioning angle measuring and adjusting device which comprises an angle measuring disc and a chain block, the angle measuring disc is fixed on one side of a steel arch rib in a bolting mode, the zero graduation line of the angle measuring disc is flush with the horizontal angle direction of the steel arch rib, and the center of the angle measuring disc is provided with a vertical angle pointer; two lifting lugs are arranged on the steel arch rib, each lifting lug is connected with a chain block, and the chain blocks are connected with a lifting hook of a crane through steel wire ropes; when the crane hoists the steel arch rib, the installation inclination angle of the steel arch rib is adjusted by observing the reading of the vertical angle pointer on the angle measuring disc and adopting the hand-pulling block; according to the utility model, the safety of high-altitude hoisting can be improved, and the positioning and adjusting time is reduced, so that the construction time of large hoisting equipment is reduced, and the effects of shortening the construction period, reducing cost, improving efficiency, and being safe and quick are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of construction engineering bridge steel arch installation measurement and positioning technology, and particularly relates to a steel pipe arch bridge hoisting positioning angle measurement and adjustment device. Background Technology

[0002] In the construction of steel pipe arch bridges, precise measurement and positioning of the steel arch stage is required. Traditional steel arch rib hoisting measurement and positioning construction uses large equipment to hoist the steel arch stage to the designated position for adjustment. Since steel arch ribs are mostly for bridges spanning rivers and streams, with large spans and high altitudes, water-based and high-altitude operations are highly dangerous. The existing operation method is generally the scaffolding method, which involves erecting scaffolding, hoisting the steel arch to the scaffolding position, and then measuring and adjusting the steel arch. This method requires multiple measurements, and the positioning tilt angle and spatial position of the steel arch must be accurate. Not only is it difficult to guarantee the adjustment accuracy, but it also requires additional construction machinery and wastes construction time. Furthermore, scaffolding is a high-risk operation when crossing roads, waterways, or valleys, and the time spent adjusting and positioning personnel at high altitudes is long, which is very dangerous and affects the construction quality and safety of the steel pipe arch. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a steel pipe arch bridge hoisting positioning angle measurement and adjustment device, which can improve the safety of high-altitude hoisting, reduce the positioning adjustment time, thereby reducing the construction time of large hoisting equipment, and achieve the effects of shortening the construction period, reducing costs and increasing efficiency, and ensuring safety and speed.

[0004] The purpose of this utility model is achieved through the following technical solution: This steel pipe arch bridge hoisting positioning angle measuring and adjustment device includes an angle measuring disc and a hand-operated hoist. The angle measuring disc is fixed to one side of the steel arch rib by bolting, and the zero mark of the angle measuring disc is aligned with the horizontal angle direction of the steel arch rib. A vertical angle pointer is installed at the center of the angle measuring disc. Two lifting lugs are provided on the steel arch rib, and a hand-operated hoist is connected to each lifting lug. The hand-operated hoist is connected to the hook of the crane via a wire rope. When the crane lifts the steel arch rib, the installation tilt angle of the steel arch rib is adjusted by observing the reading of the vertical angle pointer on the angle measuring disc and manually pulling the hand-operated hoist.

[0005] The beneficial effects of this utility model are as follows: Compared with the prior art, by using a linkage device between a hand-operated hoist and an angle measuring disc, the tilt angle of the steel arch rib can be adjusted to the specified angle by observing the vertical angle pointer index of the angle measuring disc at low altitudes via the hand-operated hoist and wire rope. Then, it can be hoisted to the specified position for precise positioning, reducing the time spent on multiple measurements and finally completing the installation and positioning. Through this linkage measurement device, the safety of high-altitude hoisting can be improved, the positioning and adjustment time can be reduced, thereby reducing the construction time of large hoisting equipment, achieving the effects of shortening the construction period, reducing costs and increasing efficiency, and ensuring safety and speed.

[0006] Preferably, the angle measuring disc is a 180° angle disc, and the scale on the angle measuring disc has two rings, which are set in a clockwise direction and a counterclockwise direction. With the above-mentioned setting of the angle measuring disc, construction personnel can accurately read the angle using this angle measuring disc, whether the angle measuring disc is installed on one side or the other side of the steel arch rib.

[0007] Preferably, the plumb angle pointer is located on the scale surface of the angle measuring disk, and the scale surface of the angle measuring disk is located on the outside of the steel arch rib. With the above structure, the plumb angle pointer can achieve accurate reading with the scale surface, and the scale surface is located on the outside of the steel arch rib, which makes it convenient for construction personnel to directly observe the reading of the plumb angle pointer on the scale surface with the naked eye.

[0008] Preferably, the angle measuring disc is located at the lowest point of the installation tilt angle of the steel arch rib; this makes the distance between the angle measuring disc and the construction personnel closer, making it easier for the construction personnel to read the angle measuring disc.

[0009] Preferably, the two lifting lugs are respectively located on both sides of the upper end face of the steel arch rib, and the two lifting lugs are symmetrically distributed along the center of the steel arch rib; this makes the stress point of the steel arch rib during the lifting process at the center, thereby making the stress distribution of the two hand chain hoists uniform, which makes it easier for construction personnel to adjust the steel arch rib by pulling the hand chain hoists.

[0010] Preferably, the system also includes a support frame with a support plate on it. The inclination rate of the support plate is consistent with the inclination rate of the installation inclination angle of the steel arch rib. By setting up the support frame and the support plate with the above-mentioned structure, the steel arch rib can be precisely adjusted by observing the readings of the angle measuring plate, and then by cooperating with the total station through the support plate and the hand-operated hoist. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure between the angle measuring disc and the steel arch rib of this utility model.

[0012] Figure 2This is a schematic diagram of the main structure of the hoisting positioning angle measuring and adjusting device of this utility model in actual application.

[0013] Figure 3 This is a three-dimensional structural diagram of the hoisting positioning angle measuring and adjustment device of this utility model in actual application.

[0014] The labels in the attached diagram are as follows: 1. Angle measuring disc; 2. Hand-operated hoist; 3. Steel arch rib; 4. Vertical angle pointer; 5. Support; 6. Steel wire rope; 7. Hook; 11. Zero mark; 31. Lifting lug; 51. Support plate. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings: as shown in the drawings Figures 1 to 3 As shown, this utility model includes an angle measuring disc 1 and a hand-operated hoist 2. The angle measuring disc 1 is fixed to one side of the steel arch rib 3 by bolting, and the zero mark 11 of the angle measuring disc 1 is flush with the horizontal angle direction of the steel arch rib 3. A vertical angle pointer 4 is installed at the center of the angle measuring disc 1. Two lifting lugs 31 are provided on the steel arch rib 3, and a hand-operated hoist 2 is connected to each lifting lug 31. The hand-operated hoist 2 is connected to the hook 7 of the crane through a wire rope 6. When the crane lifts the steel arch rib 3, the installation tilt angle of the steel arch rib 3 is adjusted by observing the reading of the vertical angle pointer 4 on the angle measuring disc 1 and using the hand-operated hoist 2.

[0016] The angle measuring disk 1 is a 180° angle disk, and the scale on the angle measuring disk 1 has two rings, which are set in the clockwise direction and the counterclockwise direction; the vertical angle pointer 4 is located on the scale surface of the angle measuring disk 1, and the scale surface of the angle measuring disk 1 is located on the outside of the steel arch rib 3.

[0017] Angle measuring disc 1 is located at the bottom of the installation tilt angle of steel arch rib 3.

[0018] Two lifting lugs 31 are respectively set on both sides of the upper end face of the steel arch rib 3, and the two lifting lugs 31 are symmetrically distributed along the center of the steel arch rib 3.

[0019] It also includes a bracket 5, on which a bracket support plate 51 is provided. The inclination rate of the bracket support plate 51 is consistent with the inclination rate of the installation inclination angle of the steel arch rib 3.

[0020] The usage process of this utility model is as follows: S1, draw 180° scales along the clockwise and counterclockwise directions in a semicircle to make an angle measuring disc 1; S2, install the angle measuring disc 1 on the steel arch rib 3 along the tilt angle direction; S3, fix the angle measuring disc 1 to the steel arch rib 3 with bolts, making it parallel to the horizontal angle direction of the steel arch rib 3; S4, install a plumb bob pointer 4 on the angle measuring disc 1 and let it hang naturally; S5, the hook 7, wire rope 6, hand chain hoist 2 and the lifting lug 31 on the steel arch rib 3 are used for hoisting. S6. Lift the steel arch rib 3 to the designated position and tighten the steel wire rope 6; S7. Pull the hand-operated hoist 2 to observe the reading of the plumb bob pointer 4 on the angle measuring plate 1 and adjust the angle of the steel arch rib 3 to the designed tilt angle; S8. Lift the adjusted steel arch rib 3 onto the support plate 51 of the bracket 5, and further measure the adjusted steel arch rib 3 accurately using a total station. If the accuracy is not up to standard, further adjust the steel arch rib by coordinating the support plate 51 with the total station and using the hand-operated hoist 2; S9. Lifting is complete.

[0021] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A kind of steel tube arch bridge hoisting positioning angle measurement adjusting device, including angle measurement disc (1) and chain hoist (2), it is characterized in that: The angle measuring plate (1) is fixed to one side of the steel arch rib (3) by bolting, and the zero mark (11) of the angle measuring plate (1) is flush with the horizontal angle direction of the steel arch rib (3). A vertical angle pointer (4) is installed at the center of the angle measuring plate (1). Two lifting lugs (31) are provided on the steel arch rib (3), and each lifting lug (31) is connected to a hand chain hoist (2). The hand chain hoist (2) is connected to the hook (7) of the crane by a wire rope (6). When the crane lifts the steel arch rib (3), the vertical angle pointer (4) reading on the angle measuring plate (1) is observed, and the installation tilt angle of the steel arch rib (3) is adjusted by pulling the hand chain hoist (2).

2. The steel tube arch bridge hoisting positioning angle measurement adjusting device according to claim 1, characterized in that: The angle measuring disk (1) is a 180° angle disk, and the scale on the angle measuring disk (1) has two rings, which are set in the clockwise direction and the counterclockwise direction.

3. The steel tube arch bridge hoisting positioning angle measurement adjusting device according to claim 2, characterized in that: The vertical angle pointer (4) is located on the scale surface of the angle measuring disk (1), and the scale surface of the angle measuring disk (1) is located on the outside of the steel arch rib (3).

4. The steel tube arch bridge hoisting positioning angle measurement adjusting device according to claim 1 or 2, characterized in that: The angle measuring plate (1) is located at the bottom of the installation tilt angle of the steel arch rib (3).

5. The steel tube arch bridge hoisting positioning angle measurement adjusting device according to claim 1, characterized in that: The two lifting lugs (31) are respectively located on both sides of the upper end face of the steel arch rib (3), and the two lifting lugs (31) are symmetrically distributed along the center of the steel arch rib (3).

6. The steel tube arch bridge hoisting positioning angle measurement adjusting device according to claim 1, characterized in that: It also includes a bracket (5), on which a bracket support plate (51) is provided, the inclination rate of the bracket support plate (51) being consistent with the inclination rate of the installation inclination angle of the steel arch rib (3).

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