CN110935862A

CN110935862A - Lifter of vacuum suction casting lift tube

Info

Publication number: CN110935862A
Application number: CN201811166291.6A
Authority: CN
Inventors: 万玉涛; 陈腊松
Original assignee: KEHUA HOLDING Co Ltd
Current assignee: KEHUA HOLDING Co Ltd
Priority date: 2018-09-25
Filing date: 2018-09-25
Publication date: 2020-03-31

Abstract

In the antigravity casting equipment, a liquid lifting pipe of molten iron is important equipment, but the liquid lifting pipe needs to be replaced after being used for a period of time, the liquid lifting pipe needs to be taken out in a state of being sealed with a container, and the liquid lifting pipe is not easy to take out due to the fact that the exposed part of the liquid lifting pipe is few, so that the liquid lifting pipe is often damaged to be taken out, and then a new pipe is mounted. The invention relates to a lifter, which utilizes a two-stage swing rod, wherein a trisected long swing rod is supported on the wall of a hole in a liquid lifting pipe hole during lifting, and the liquid lifting pipe is lifted out of a container together with a central shaft during lifting, so that the replacement is convenient.

Description

Lifter of vacuum suction casting lift tube

Technical Field

The casting industry counter-gravity casts the liquid iron lift tube lifting gear.

Background

In countergravity casting installations, risers are an important alternative to pouring cup sprues. After a period of use, the lift tube is replaced by removing the original lift tube from the sealed container and then installing a new lift tube. When the raw riser pipe is taken out, because the riser pipe is baked and corroded by high-temperature molten iron and is tightly adhered in the container by a sealing gasket and the like, the exposed part of the riser pipe cannot be fixed by using a tool to completely take out the riser pipe from the hole of the container, most riser pipes are incomplete when taken out, and even the periphery of the hole of the container is damaged. The material of the lift tube is mostly high-temperature ceramics, the texture is crisp, and no effective reliable tool is used when the lift tube is replaced.

Disclosure of Invention

The invention is a tool which is convenient to use when the lift tube is replaced and can completely take out the lift tube from the container hole.

The technical scheme is that the lifter of the vacuum suction casting lift tube is characterized in that three long swing rods hinged with each other are sleeved at the upper end of a central shaft in a trisection mode, and three small swing rods are hinged with the lower end of the central shaft and the upper portion of the central shaft at the same hinged angle. The outer part of the small swing rod is hinged with the long swing rod, the outer end of the long swing rod can be abutted against the upper end part of the inner hole wall of the liquid lifting pipe, the inner wall can be abutted tightly, when the central shaft is lifted, the hinged part at the lower end of the shaft rises, the small swing rod swings around the shaft tip of the long swing rod pin, the outer end of the long swing rod is tightly supported to the hole wall of the liquid lifting pipe, the nut at the upper end of the central shaft is put down, the hinged sleeve of the long swing rod is pressed, and when the central shaft.

The lifting device has the obvious effects that the lifting device is simple and practical and convenient to use, the lifting device can be taken out of the liquid lifting pipe by only extending into the liquid lifting pipe and having any position and only putting down the nut to press the hinged sleeve on the shaft.

Drawings

Fig. 1 is a view showing a state where a lifter is supported in a riser pipe hole.

FIG. 2 is a sectional view A-A of FIG. 1.

Wherein, 1, a central shaft 2, a hinge sleeve 3, a long swing rod 4, a pin shaft 5, a hinge frame 6, a small swing rod 7, a riser tube 8, a screw gland 9, a handle 10 and a sealed container

Detailed Description

The upper end of a central shaft 1 is sleeved with a trisection hinge sleeve 2, a long swing rod 3 is arranged on the hinge sleeve 2 through a pin shaft 4, the lower end of the central shaft 1 is connected with a trisection hinge frame 5, a small swing rod 6 is arranged on the hinge frame 5 through the pin shaft 4, the outside of the small swing rod 6 is hinged with the long swing rod 3, the outer end of the long swing rod 3 props against the inner hole wall of a liquid lifting pipe 7, the upper end of the central shaft 1 is provided with a threaded gland 8 on the upper portion of the hinge sleeve 2, and the top of the central shaft 1 is provided with. When the lifting device is used, the lifting device is placed in a hole of the liquid lifting pipe 7, the screw gland 8 is screwed down, the hinge sleeve 2 is pressed downwards, the small swing rod 6 swings around the pin shaft 4 of the hinge frame 5, the front end of the long swing rod 3 is supported on the inner wall of the liquid lifting pipe 7, and the handle 9 of the lifting central shaft 1 can lift the liquid lifting pipe 7 out.

Claims

1. A lifter of a vacuum suction casting lift tube is characterized in that: the upper part of the central shaft is sleeved with a trisection hinged frame, three long swing rods are arranged on the hinged frame by small shafts, the trisection hinged frame is fixed at the lower end of the shaft, three pairs of small swing rods are arranged by the small shafts, the outer parts of the small swing rods are hinged with the long swing rods, the outer ends of the long swing rods are supported on the inner hole wall of the riser tube, the end parts of the long swing rods are made into acute angles, the upper end of the hinged sleeve at the upper part of the central shaft is provided with a compression nut, and.