Chain-driven bell-and-spigot joint device of nodular cast iron pipe

Abstract

The invention discloses a chain-driven bell-and-spigot joint device of nodular cast iron pipe, and relates to an installation tool of bell-and-spigot joint of the cast iron pipe. The device is composed of a double screw rod connector and a chain driver, wherein the double screw rod connector is mainly composed of two screw rods, two hoops, four ball bearings, two driven chain wheels, four screw rod nuts; and the chain driver is composed of semicircular foot plates, foot plate check blocks, a herringbone support, a tensioning chain wheel shaft, a spanner, a driving chain wheel shaft, a drivingchain wheel, a chain, a tensioning chain wheel, a tensioning chain wheel shaft bearing base and a tensioning chain wheel bearing base position adjusting bolt. The device has the advantages that the structure is reasonable, the two identical screw rods are synchronously rotated in the same direction, the stress is uniform, the traction force is large, the sealing of a rubber ring is not damaged, apipe socket and a pipe plug are not damaged, the use is convenient, the use cost is low, the working pit is small, particularly, pipe fittings such as a socket bending pipe are very easy, the maintenance and the rush repair of a nodular cast iron pipe network is more economical, convenient and fast, and the device has popularization value.

Description

technical field [0001] The invention relates to an installation tool for socket connection of cast iron pipes, and more particularly relates to a socket connection device for chain-driven nodular cast iron pipes. Background technique [0002] Cast iron pipes are pipes cast from cast iron. Cast iron pipes are used for water supply, drainage and gas transmission pipelines. Cast iron pipes mainly include straight pipes and pipe fittings. Cast iron pipes are divided into gray cast iron pipes and ductile iron pipes according to different materials; socket connections or flange connections are mainly used between pipes. In the socket connection, one end of the straight pipe of the ductile iron pipe is a pipe socket, and the other end is a pipe plug, and a rubber sealing ring is arranged inside the pipe socket. The socket connection is mainly the insertion of two pipes and fittings and the separation of two pipes and fittings. Ductile iron pipes are widely used in municipal, ind...

AI Technical Summary

Problems solved by technology

Although ductile iron pipes have a high cost performance and are the first choice for water supply pipes, the connection of ductile iron pipes and fittings lacks installation tools, and socket connections are difficult

At present, the general-purpose manual hoist is used for the socket connection of ductile iron pipes, which is prone to uneven stress on the ductile iron pipes, easy to damage the rubber sealing ring, and seriously affects the effect of the socket connection; if an excavator is used to push the ductile iron pipes for bearing Plug-in connection requires a special working environment; especially when repairing the pipe network of ductile iron pipes, manual hoists, excavators and other tools are used, which are inconvenient to use, poor in use effect, and high in repair costs

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