Comb tooth type inhaul cable anchoring steering seat

Abstract

The utility model relates to a comb tooth type inhaul cable anchoring steering seat which comprises a concrete base, a shaft pipe is fixedly arranged on the top face of the concrete base, the shaft pipe is horizontally arranged in the longitudinal direction of the concrete base, one part of the shaft pipe is poured in base concrete, and the other part of the shaft pipe protrudes out of the concrete face of the base. A plurality of shear nails are welded to the outer wall face of the part, located in the base concrete, of the shaft pipe, a plurality of limiting columns are welded to the top of the shaft pipe in the longitudinal direction at equal intervals, the axis of each limiting column is perpendicular to the axis of the shaft rod, and a limiting rod is welded between the upper ends of the limiting columns. According to the utility model, a plurality of inhaul cables can be carded, steered and anchored, and the knotting and jumping phenomena of the inhaul cables are effectively prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction, relates to the installation and construction of arch ribs of arch bridges by adopting an inclined buckle hanging method, and specifically relates to a comb-tooth type cable anchoring steering seat for steering cables for arch rib buckle hanging. Background Art

[0002] The arch ribs of large-span arch bridges are mostly installed by cable-stayed and buckled installation. The cable-stayed and buckled installation system generally includes buckle towers and buckle cables, i.e. back cables. One end of the buckle cable is anchored to the arch rib, and the other end is the tensioning end, which is anchored to the buckle tower. During the construction process, the arch ribs are hoisted in sections by cable hoists, and the arch rib linear shape is controlled by tensioning the buckle cables.

[0003] When installing the arch rib of a large-span arch bridge in mountainous areas, if one or both sides are steep mountains, the terrain conditions can be used to set anchors on the mountain without installing anchor towers, and the tensioned ends of the cables can be directly anchored to the anchors on the mountain. Since the surface rocks of some mountains are relatively fragile, some anchors are set in caves deep in the mountain, and some tensioned ends of the cables need to be turned to anchor. The current cable steering device uses conventional steering wheels, but during the installation of the arch rib, as the cables are tensioned, the longitudinal and lateral angles of the cables will change, which is prone to wheel jamming and damage to the steering wheels, and there is a risk of cable jumping. Summary of the invention

[0004] The utility model aims to solve the above problems and provide a comb-tooth type cable anchoring steering seat, which eliminates the setting of steering wheels and avoids the risks of wheel jamming and cable jumping.

[0005] The technical solution of the utility model is as follows:

[0006] A comb-tooth type cable anchoring steering seat, characterized in that it includes a concrete base, an axle tube is fixedly arranged on the top surface of the concrete base, the axle tube is arranged horizontally along the longitudinal direction of the concrete base, one part of the axle tube is cast in the base concrete and the other part protrudes above the base concrete surface, a plurality of shear nails are welded on the outer wall surface of the axle tube cast in the base concrete, a plurality of limit columns are welded at equal intervals along the longitudinal direction on the top of the axle tube, the axis of each limit column is perpendicular to the axis center of the shaft rod, and a limit rod is welded between the upper ends of each limit column.

[0007] The utility model has a simple structure, high safety and reliability, and can realize the combing and steering of multiple cables into anchors, effectively preventing the cable from tying and jumping. The utility model can also be used for the steering anchoring of traction cables, back cables, load-bearing cables, and lifting cables in the construction process of cable hanging + inclined buckle hanging. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0009] Figure 2 is a schematic side view structure of the present utility model;

[0010] Figure 3 is a schematic diagram of a usage state of the present utility model;

[0011] Figure 4 is Figure 3 an enlarged view of the usage state of the present utility model at position A in Specific embodiments

[0012] As Figure 1 、 Figure 2 shown, the present utility model includes a concrete base 1, and a shaft tube 2 is fixedly arranged on the top surface of the concrete base. The shaft tube is horizontally arranged longitudinally along the concrete base. A part of the shaft tube is poured into the base concrete and another part protrudes above the base concrete surface. A plurality of shear studs 3 are welded on the outer wall surface of the part of the shaft tube 2 poured in the concrete of the base 1 to ensure that the shaft tube is firmly fixed on the concrete base; a plurality of limit columns 4 are welded equidistantly along the longitudinal direction at the top of the shaft tube 2. The axis of each limit column is perpendicular to the axis of the shaft rod, and a limit rod 5 is welded between the upper ends of the limit columns 4.

[0013] The shaft tube 2 is made of a steel pipe. To enhance the compressive strength of the shaft tube, concrete can be poured into the shaft tube 2.

[0014] The limit columns are made of steel pipes, and a clamping groove can be opened at the lower end according to the radian of the shaft tube circle, which is clamped on the shaft tube and fully welded to the shaft tube.

[0015] As Figure 3 shown, on both banks of the construction position of an arch bridge, one bank has a gentle terrain and the other bank is a steep mountain. The arch rib 6 of the arch bridge is constructed by the cable-stayed and buckled hanging method. The cable-stayed and buckled hanging system is set up with a buckling tower 9 and a back cable anchor block in the conventional way on the bank with a gentle terrain, and no buckling tower is set on the bank of the steep mountain. A plurality of anchor blocks 7 are directly set on the mountain by using the terrain. The buckling cable 8 is directly anchored to the anchor blocks on the mountain. One of the anchor blocks 7 is set in a cave in the mountain. At Figure 3 position A in Figure 4 and Figure 1 、 Figure 2 shown, an anchoring and turning seat of the present utility model is provided at the entrance of the cave and on the slope below the cave. The concrete base 1 of the anchoring and turning seat is poured on the bottom surface of the cave entrance and the slope body below the cave entrance. Each buckling cable 8 that needs to turn passes through the gap between two adjacent limit columns 4 on the turning seat and presses on the shaft rod 2. One end of each buckling cable 8 is anchored to the arch rib 6, and the other end is anchored to the anchor block 7 in the cave after turning through the turning seat. When adjusting the arch rib line type and tensioning the buckling cables, the buckling cable 7 slides on the shaft rod 2. The two limit columns 4 limit the lateral movement range of the buckling cable 7 to prevent multiple buckling cables from being entangled and knotted. The limit rod 5 can prevent the buckling cable 7 from detaching from the turning seat, thus avoiding the phenomenon of cable jumping.

Claims

1. A comb-tooth type cable anchoring steering seat, characterized in that: It includes a concrete base, and an axis tube is fixedly arranged on the top surface of the concrete base. The axis tube is arranged horizontally along the longitudinal direction of the concrete base. One part of the axis tube is cast in the concrete of the base and the other part protrudes above the concrete surface of the base. A plurality of shear nails are welded on the outer wall surface of the part of the axis tube cast in the concrete of the base, and a plurality of limit columns are welded on the top of the axis tube at equal intervals along the longitudinal direction. The axis of each limit column is perpendicular to the axis center of the shaft rod, and a limit rod is welded between the upper ends of each limit column.

2. The comb-tooth type cable anchoring steering seat according to claim 1, characterized in that: The shaft tube is a steel tube, and concrete is poured into the shaft tube.

3. The comb-tooth type cable anchoring steering seat according to claim 1, characterized in that: The limit column is made of a steel pipe, and the lower end thereof is fully welded to the shaft pipe.

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