JOINT MECHANISM AND CONNECTION METHOD FOR STEEL PIPE
First Claim
1. A joint mechanism for a steel pipe comprising:
- a first inner joint provided at one end of one steel pipe;
a second inner joint provided at the other end of the other steel pipe;
an outer joint disposed circumferentially between and across the first inner joint and the second inner joint for connecting a pair of the steel pipes to each other when the first inner joint of one steel pipe is placed adjacent the second inner joint of the other steel pipe;
a key member for engaging the first inner joint with the outer joint and also engaging the second inner joint with the outer joint, thereby to prevent relative movement between the pair of steel pipes in a longitudinal direction of these steel pipes;
an outward circumferential groove provided respectively in an outer circumference of the first inner joint and an outer circumference of the second inner joint;
an inward circumferential groove provided in an inner circumference of the outer joint in opposition to the outward circumferential grooves provided in the outer circumferences of the first inner joint and the second inner joint respectively; and
the outer joint includes an opening portion for inserting the key member from an outer circumference of the outer joint into a key groove constituted of the outward circumferential groove and the inward circumferential groove.
1 Assignment
0 Petitions
Accused Products
Abstract
Contemplated are simplification and cost reduction in arrangement of connecting a pair of steel pipes to each other. A joint mechanism for a pair of steel pipe piles 1A, 1B includes an inner joint 10A provided in the steel pipe pile 1A, an inner joint 10B, an outer joint 20 disposed circumferentially between and across the inner joint 10A of the steel pipe pile 1A and the inner joint 10B of the steel pipe pile 1B, and a key member 30 configured to prevent relative movement between the pair of steel pipe piles 1A, 1B in a longitudinal direction of these steel pipes 1. The outer joint 20 includes an opening portion 22 (22A, 22B) for inserting, from its outer circumferential face, split key members 31 constituting the key member 30 into a key groove constituted of an outward circumferential groove 13 (13A, 13B) provided in the outer circumference of the inner joint 10A and the inner joint 10B respectively and an inward circumferential groove 23 (23A, 23B) provided in the inner circumference of the outer joint 20 in opposition to the outward circumferential groove 13 (13A, 13B).
5 Citations
11 Claims
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1. A joint mechanism for a steel pipe comprising:
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a first inner joint provided at one end of one steel pipe; a second inner joint provided at the other end of the other steel pipe; an outer joint disposed circumferentially between and across the first inner joint and the second inner joint for connecting a pair of the steel pipes to each other when the first inner joint of one steel pipe is placed adjacent the second inner joint of the other steel pipe; a key member for engaging the first inner joint with the outer joint and also engaging the second inner joint with the outer joint, thereby to prevent relative movement between the pair of steel pipes in a longitudinal direction of these steel pipes; an outward circumferential groove provided respectively in an outer circumference of the first inner joint and an outer circumference of the second inner joint; an inward circumferential groove provided in an inner circumference of the outer joint in opposition to the outward circumferential grooves provided in the outer circumferences of the first inner joint and the second inner joint respectively; and the outer joint includes an opening portion for inserting the key member from an outer circumference of the outer joint into a key groove constituted of the outward circumferential groove and the inward circumferential groove. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification