Device for welding and fixing hydraulic-engineering pipes

Abstract

The invention discloses a device for welding and fixing hydraulic-engineering pipes. The device is directly arranged on the hydraulic-engineering pipes in a sleeving manner, and an oil cylinder is provided for compression and pressure maintaining, so that the welded two pipes are fixed. The device is characterized in that two main U-shaped brackets are parallel with each other; the two ends of thetwo main U-shaped brackets are connected with two fixing base plates through fixing blocks correspondingly; the two fixing base plates are parallel with each other; sliding grooves are formed in thefixing base plates; two subsidiary U-shaped brackets are parallel with each other; the two ends of the subsidiary U-shaped brackets are each provided with a sliding block, and the sliding blocks are arranged in the sliding grooves correspondingly; the subsidiary U-shaped brackets are parallel with the main U-shaped brackets; the inner sides of the main U-shaped brackets and the inner sides of thesubsidiary U-shaped brackets are each provided with two grooves in a symmetrical manner; two threaded holes are symmetrically formed in each main U-shaped bracket and communicate with the grooves in the corresponding main U-shaped bracket correspondingly; and two threaded holes are symmetrically formed in each subsidiary U-shaped bracket and communicate with the two grooves in the corresponding subsidiary U-shaped bracket correspondingly.

Description

technical field [0001] The invention relates to a welding and fixing device for water conservancy pipes, relates to a device for fixing water conservancy pipes when the water conservancy pipes are welded, and belongs to the field of water conservancy construction. In particular, it relates to a device that is directly sleeved on a water conservancy pipeline, and is used for fixing two welded pipelines in cooperation with the pressing and maintaining pressure of an oil cylinder. Background technique [0002] At present, in the field of water conservancy, a large number of pipes need to be used to complete the water supply and drainage operations. The length of a single pipe is difficult to meet the needs of the operation. Usually, several pipes need to be connected to form a section of water pipeline. When connecting small-diameter PE pipes, welding is often used. The machine heats the pipe interface to complete the welding operation. The traditional welding operation method ...

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Problems solved by technology

[0002] At present, in the field of water conservancy, it is necessary to use a large number of pipes to complete the water supply and drainage operations. The length of a single pipe is difficult to meet the operation requirements. Usually, several pipes need to be connected to form a section of water pipes. When connecting small-diameter PE pipes, welding is often used. The machine heats the joints of the pipes to complete the welding operation. The traditional welding operation method is to press the joints of the two pipes to be welded on both ends of the heater of the fusion machine at the same time. After the heating is completed, the two pipes are quickly squeezed together and kept for a certain period of time. Pipeline welding operation, using manual operation for extrusion, consumes a lot of physical strength for operators when welding water conservancy pipelines. The existing pipeline welding and fixing device, such as the publication number CN204054647U, discloses a socket-type hot-melt pipeline fusion device. The fixed clamp and the sliding clamp clamp and fix the pipe. When using this device to fix the pipe welding, it is necessary to first penetrate the pipe into the V-shaped groove and then clamp and fix it. After the welding is completed, the pipe needs to be erected , Pull the device out from one end of the pipe. It is more troublesome to use for long and heavy pipes.

[0003] Moreover, the device cannot fully adjust the angle of the clamped and fixed pipes. If the axes of the two pipes are not aligned and the welding operation is performed directly, the problem of leakage at the welded joint of the pipes will easily occur. Pipeline welding often requires the joints of the two pipes to be compressed and maintained for a certain period of time. Using this device to perform manual compression through the handle, it is difficult to control the intensity of compression, making the fusion joint unstable and the connection effect not good

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