Foundation pit steel pipe connecting device

Abstract

The invention discloses a foundation pit steel pipe connecting device. The foundation pit steel pipe connecting device comprises a thick iron sheet and a limiting structure. The limiting structure isinstalled on the thick iron sheet, the limiting structure and the thick iron sheet are integrally formed, the whole limiting structure is cylindrical, and the thick iron sheet and the limiting structure are combined to form a component unit. The limiting structure comprises a limiting cylinder, a limiting column, limiting blocks and bolts. The limiting cylinder wraps the limiting column and comprises two arc-shaped plates. Expansion joints are reserved in the joint of the two arc-shaped plates and used for increasing and reducing the diameter of the limiting cylinder. Every two adjacent limiting blocks are oppositely arranged on the corresponding side face of the limiting cylinder, the bolts are arranged in the limiting blocks, and the limiting blocks are used for connecting the two disconnected arc-shaped plates. The stability of a supporting system is improved, components and parts are prevented from falling off, whether the ends of internal steel pipes are inclined or not can be observed through an examination cavity, the potential safety hazard are timely eliminated, and the overall stability of a steel pipe support is enhanced by the limiting cylinder and the limiting column.

Description

technical field [0001] The invention relates to the technical field of building appliances, in particular to a steel pipe connection device for foundation pits. Background technique [0002] Foundation pit refers to the space below the ground excavated for the construction of the foundation and basement of buildings (including structures); [0003] When the foundation pit is very deep, the soil layer on the side of the foundation pit will collapse to varying degrees, so an enclosure structure is required to prevent the soil layer on the side of the foundation pit from collapsing. Make support piles or continuous walls on both sides, and then use steel pipes to withstand the piles or walls on both sides, and you can also use many rows of steel pipes to support them. to continue digging down; [0004] Moreover, the industry standard of the People's Republic of China "Technical Regulations for Building Foundation Pit Support" JGJ120-2012 defines the foundation pit support as ...

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Problems solved by technology

[0009] 1. When using fasteners to connect steel pipes, because the length of the vertical pipe is not enough, it is often necessary to put a connecting fastener at the top of one vertical pipe to connect with the bottom end of another vertical pipe. However, when dealing with the side pressure of the foundation pit , the relative position between the two connected vertical pipes will be more or less offset, that is, the axes of the two connected vertical pipes are no longer on the same straight line, at this time, the connecting fasteners will be more or less inclined , thus adversely affecting the stability of the steel pipe support, causing the risk of the steel pipe support system collapsing, and threatening the life safety of the workers;

[0010] 2. Since most of the existing connecting fasteners are steel fasteners, and the connection between one steel pipe and another steel pipe is often completely wrapped in the connecting fastener, in appearance, the connection of the steel pipe in the fastener cannot be seen In some cases, it is impossible to visually observe the joints between multiple steel pipes, so as to eliminate potential safety hazards;

[0011] 3. The existing connecting fastener itself is not stable enough. Because the bolts on the existing cross fastener are inserted in the fastener through groove, when disassembling, the bolts will often fall out, and it needs to be used repeatedly. Rotate the bolt around the through groove to realize the opening and closing of the fastener. Over time, the thread of the bolt will be worn, thereby reducing its stability. Since the bolt of the fastener is easy to come out of the chute, when the construction unit is constructing, Fasteners and steel pipes are often leased from other companies, and damage to fasteners increases construction costs

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