Casting method of pin-jointed cable clamp for lifting lug of suspension bridge

Abstract

The invention provides a casting method of a pin-jointed cable clamp for a lifting lug of a suspension bridge. The pin-jointed cable clamp for the lifting lug is divided into an upper part and a lower part which are respectively cast by the steps of manufacturing of a manufacturing model, molding, casting and after-treatment. A cable hole of the casting at the upper part is downward, pouring heads are arranged at two ends of the casting at the upper part and are connected with the casting at the upper part through a pouring channel, a riser is arranged on the upper surface of the casting at the upper part, and chilling blocks are arranged at the outer side of a convex plate of a bolt joint and on the surface of the cable hole. A cable hole of the casting at the lower part is upward, pouring heads are arranged at two ends of the casting at the lower part and are connected with the casting at the lower part through a pouring channel, a riser is arranged on the surface of the cable hole,and chilling blocks are arranged at the outer side of a convex plate of a bolt joint, at the connecting part of a lug board and a jacket and on the surface of the lug board. The invention enables thecasting structure to be quickly formed in a shortest time, thereby improving the tensile strength; and simultaneously, because the chilling blocks are firstly cooled, the molten steel is preferably fed, thereby greatly reducing and even eliminating the generation of cracks.

Description

technical field [0001] The invention relates to a casting method, in particular to a specific casting method of a pin-connected cable clamp for suspension bridge lugs. Background technique [0002] like figure 1 As shown, in the structural components of the suspension bridge, the cable clamp 4 is the connecting piece between the main cable 3 and the suspension cable 6, it is clamped on the main cable 3 and connects the main cable 3 and the suspension cable 6, and the bridge deck 5 The static load and dynamic load are transmitted to the main cable 3, which is an important stressed member. [0003] The structure of the cable clip 4 is complex, and generally adopts a casting structure, and the main tension is analyzed from the perspective of force. [0004] like figure 2 , image 3 As shown, it is a schematic diagram of the structure of the lug pin-connected cable clamp: [0005] 1. If figure 2 Shown is the upper part of the lug pin-connected cable clamp, which is a sem...

AI Technical Summary

Problems solved by technology

[0012] Disadvantages of the casting options above:

However, welding repairs on castings will cause potential stress sources, and the product is prone to fatigue cracks under the dynamic load of the bridge deck, thus affecting the safety of the bridge

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