Mounting and positioning device for steel pipe arch of tied-arch bridge

Abstract

The utility model discloses a mounting and positioning device for steel pipe arches of a tied-arch bridge, which relates to the technical field of bridge engineering, aims to solve the problems of inaccurate mounting and positioning and low mounting efficiency of the traditional steel pipe arches, and has the technical key points that the mounting and positioning device comprises a plurality of steel pipe arches, self-locking devices are arranged on the cross-shaped fixing frame, the self-locking devices are located on the outer side of the cross-shaped fixing frame, and the directions of the self-locking devices at the two ends of the steel pipe arch are opposite; according to the scheme, the self-locking devices opposite in direction are installed at the two ends of the steel pipe arches, operation is easy and convenient when the steel pipe arches are in butt joint, temporary consolidation can be completed only by pushing the steel pipe arches into the steel pipe arches, the butt joint accuracy of the two steel pipe arches can be guaranteed, meanwhile, the construction time can be shortened, and therefore the construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to an installation and positioning device for a steel pipe arch of a tied arch bridge, belonging to the technical field of bridge engineering. Background Art

[0002] The tied arch bridge is a common bridge structure. It achieves good load-bearing capacity and beautiful appearance through the coordination of tie rods and arch structures. When building a tied arch bridge, the installation of the steel tube arch is a key step, which not only affects the overall stability and safety of the bridge, but also affects the construction schedule and cost. At present, with the development of engineering technology, the design and construction of tied arch bridges pay more and more attention to accuracy and efficiency. The installation and positioning technology of the steel tube arch is also constantly developing, trying to improve the accuracy and efficiency of the installation through various mechanical devices and technical means.

[0003] However, there is still room for improvement in the existing technology, especially in large or specially designed tied arch bridge projects, where the requirements for installing positioning devices are more stringent. The traditional approach is to build a temporary support structure to maintain the stability of the arch during installation. This approach has certain limitations, such as inaccurate positioning and low installation efficiency. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide an installation and positioning device for a steel pipe arch of a tied arch bridge.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an installation and positioning device for steel tube arches of tied arch bridges, comprising a plurality of steel tube arches, each of which is provided with a cross fixing frame at both ends, and a self-locking device is provided on the cross fixing frame, the self-locking device is located on the outside of the cross fixing frame, and the directions of the self-locking devices at both ends of the steel tube arch are opposite; the adjacent steel tube arches are fixed by the cooperation of two self-locking devices;

[0006] The self-locking device includes a fixed seat, an elastic member, a lever, a lock and a tenon; the fixed seat is connected and fixed to the cross fixing frame, one end of the elastic member is connected and fixed to the fixed seat, and the other end of the elastic member is connected and fixed to the lever; one end of the lever is located in the fixed seat, and the other end of the lever extends out of the fixed seat; the tenon is connected and fixed to the front end of the fixed seat, a sliding groove is provided on the tenon, the lock is located in the sliding groove, the sliding groove is used for the lock to slide, and one end of the lever located in the fixed seat is connected and fixed to the lock.

[0007] Preferably, the fixing seat is connected and fixed at the center of the cross fixing frame.

[0008] Preferably, the cross section of the lock buckle is semicircular.

[0009] Preferably, the elastic member is a spring.

[0010] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0011] The utility model discloses an installation and positioning device for a steel tube arch of a tied arch bridge, which eliminates the practice in the prior art of building a temporary support structure to keep the arch stable during installation. By installing self-locking devices in opposite directions at both ends of the steel tube arch, the operation is simple when the steel tube arches are butt-jointed, and temporary consolidation can be completed by simply pushing them into each other. The accuracy of the butt joint of the two steel tube arches can also be ensured, while the construction time can be reduced, thereby reducing construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0013] Attached Figure 1 This is a structural schematic diagram of a mounting and positioning device for a steel pipe arch of a tied arch bridge according to the utility model;

[0014] Attached Figure 2 For attachment Figure 1 The enlarged view of point A in the middle;

[0015] Attached Figure 3 It is a cross-sectional view of a self-locking device for the installation and positioning device of a steel pipe arch of a tied arch bridge according to the utility model;

[0016] Attached Figure 4 It is a schematic diagram of the cooperation of two self-locking devices of the utility model.

[0017] In the figure: 1. steel pipe arch; 2. cross fixing frame; 3. fixing seat; 4. elastic member; 5. lever; 6. lock; 7. tenon; 8. slide groove. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] As attached Figure 1-4 As shown, the utility model discloses an installation and positioning device for a steel tube arch of a tied arch bridge, comprising a plurality of steel tube arches 1, each of which is provided with a cross fixing frame 2 at both ends, and a self-locking device is provided on the cross fixing frame 2, the self-locking device is located on the outside of the cross fixing frame 2, and the directions of the self-locking devices at both ends of the steel tube arch 1 are opposite; adjacent steel tube arches 1 are fixed by the cooperation of two self-locking devices.

[0020] The self-locking device includes a fixed seat 3, an elastic member 4, a lever 5, a lock buckle 6 and a tenon 7, wherein the cross section of the lock buckle 6 is semicircular, the lock buckle 6 is a semi-cylindrical body, and the elastic member 4 is a spring; the fixed seat 3 is connected and fixed at the center of the cross fixing frame 2, one end of the elastic member 4 is connected and fixed to the fixed seat 3, and the other end of the elastic member 4 is connected and fixed to the lever 5, the elastic member 4 is used to cooperate with the movement of the lever 5, and a long hole for the movement of the lever 5 is provided on the fixed seat 3; one end of the lever 5 is located in the fixed seat 3, and the other end of the lever 5 extends out of the fixed seat 3; the tenon 7 is connected and fixed to the front end of the fixed seat 3, and a sliding groove 8 is provided on the tenon 7, the lock buckle 6 is located in the sliding groove 8, and the sliding groove 8 is used for the lock buckle 6 to slide, and one end of the lever 5 located in the fixed seat 3 is connected and fixed to the lock buckle 6.

[0021] The working principle of the utility model is as follows:

[0022] When the self-locking device is placed alone, the elastic member 4 is in a naturally contracted state, and the elastic member 4 pulls the lever 5 connected to the lock buckle 6, so that the semi-cylindrical lock buckle 6 is in an inclined state; when the adjacent steel pipe arches 1 are butted, the tenons 7 of the two self-locking devices press against each other's lock buckles 6, so that the two lock buckles 6 are horizontally tangent to each other and thus merged together. At this time, the lever 5 connected to the semi-cylinder pulls the elastic member 4 outward, so that the elastic member 4 is in a tensioned state. When the two lock buckles 6 are merged, a complete cylinder is formed that can rotate along the slide groove 8. At this time, the elastic member 4 in a tensioned state can pull the lever 5, so that the two lock buckles 6 are in an inclined state again, so that the two self-locking devices are tightly fixed together, resisting tension, bending and torsion, and achieving tight fixation of the two steel pipe arches 1.

[0023] The above are only specific application examples of the utility model and do not constitute any limitation to the protection scope of the utility model; any technical solutions formed by equivalent transformation or equivalent replacement shall fall within the protection scope of the utility model.

Claims

1. An installation and positioning device for a steel tube arch of a tied arch bridge, characterized in that: It comprises a plurality of steel tube arches (1), each of the two ends of the steel tube arch (1) being provided with a cross fixing frame (2), the cross fixing frame (2) being provided with a self-locking device, the self-locking device being located outside the cross fixing frame (2), and the directions of the self-locking devices at the two ends of the steel tube arch (1) being opposite; the adjacent steel tube arches (1) are fixed by means of two self-locking devices; The self-locking device comprises a fixed seat (3), an elastic member (4), a lever (5), a lock (6) and a tenon (7); the fixed seat (3) is connected and fixed to the cross fixing frame (2); one end of the elastic member (4) is connected and fixed to the fixed seat (3); the other end of the elastic member (4) is connected and fixed to the lever (5); one end of the lever (5) is located in the fixed seat (3); the other end of the lever (5) extends out of the fixed seat (3); the tenon (7) is connected and fixed to the front end of the fixed seat (3); a sliding groove (8) is provided on the tenon (7); the lock (6) is located in the sliding groove (8); the sliding groove (8) is used for the lock (6) to slide; the end of the lever (5) located in the fixed seat (3) is connected and fixed to the lock (6).

2. The installation and positioning device for a steel tube arch of a tied arch bridge according to claim 1, characterized in that: The fixing seat (3) is connected and fixed at the center of the cross fixing frame (2).

3. The installation and positioning device for a steel tube arch of a tied arch bridge according to claim 1, characterized in that: The cross section of the lock buckle (6) is semicircular.

4. The installation and positioning device for a steel tube arch of a tied arch bridge according to claim 1, characterized in that: The elastic member (4) is a spring.

Images