Portal crane capable of switching over clamps and used for hardware pipe fitting

Abstract

The invention discloses a portal crane capable of switching over clamps and used for a hardware pipe fitting, and relates to the field of hardware machining equipment. The portal crane capable of switching over clamps and used for the hardware pipe fitting comprises a crane frame, a clamp hoisting frame and clamp switchover rolls, wherein a winding reel arranged on a hoisting shaft on the crane frame is wound with traction ropes; the hoisting shaft is connected with the clamp hoisting frame through two traction ropes; the clamp hoisting frame is connected with two pairs of clamp switchover roll support columns through slide rods; one clamp switchover roll is rotationally connected between the lower ends of each pair of the clamp switchover roll support columns; a square pipe clamping groupis arranged at one side of each clamp switchover roll; and a circular pipe clamping group is arranged at the other side of each clamp switchover roll. According to the portal crane capable of switching over the clamps and used for the hardware pipe fitting, a rotary wheel is rotated, each pair of the clamp switchover roll support columns is controlled to move under the condition of adjusting thethread relationship of a screw rod and a screw rod seat, a distance between the clamp switchover rolls arranged at the lower ends of the two pairs of clamp switchover roll support columns is adjusted,the clamps arranged on the two groups of clamp switchover rolls clamp the pipe fitting, and the operation is convenient.

Description

technical field [0001] The invention relates to the field of hardware processing equipment, in particular to a gantry crane for metal pipe fittings with switchable clamps. Background technique [0002] In the manufacturing process of hardware pipe fittings, it is necessary to move and arrange the pipe fittings after production. When relocating large-diameter pipes, they are usually clamped by a gantry crane with clamps and then assisted in handling. Therefore, inventing a metal pipe fitting gantry crane with switchable clamps to solve the above problems is necessary for the crane to transport the pipe fittings. Since the pipe fittings produced have circular pipes and square pipes, due to the difference in the shape of the pipe fittings, it is troublesome and not firm to fix the pipe fittings. [0003] When handling workpieces of different shapes in the prior art, the fixture at the bottom of the gantry crane usually needs to transform and match the entire fixture as a whole...

AI Technical Summary

Problems solved by technology

Due to the shape of the pipe fittings produced are round pipe and square pipe, due to the difference in the shape of the pipe fittings, it is more troublesome to fix the pipe fittings, and it is not firm

[0003] When handling workpieces of different shapes in the prior art, the fixture at the bottom of the gantry crane usually needs to transform and match the entire fixture as a whole. If the area is arc-shaped and the other part is edge-shaped, this method cannot be used to effectively match, and only a relatively suitable one can be selected, resulting in unreliable clamping during handling. In addition, according to changes in the shape and smoothness of the workpiece In addition, when the traditional gantry crane is unloading, the third-party transport vehicle or transfer tool must be located directly under the gantry crane spreader, because the spreader cannot continue to walk when it reaches the edge of the base slide rail, so the width For narrower medium-sized gantry cranes, there are situations where third-party transport vehicles or transfer tools cannot enter a suitable position

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