CN212982232U

CN212982232U - Special lifting appliance for deep well type resistance furnace

Info

Publication number: CN212982232U
Application number: CN202021665591.1U
Authority: CN
Inventors: 邹积峰; 翁永清
Original assignee: China Coal Zhangjiakou Coal Mining Machinery Co Ltd
Current assignee: China Coal Zhangjiakou Coal Mining Machinery Co Ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-04-16
Anticipated expiration: 2030-08-12

Abstract

The utility model relates to a heat treatment trade major axis class work piece hoist and mount apparatus, specifically speaking are deep-well formula resistance furnace special lifting device. Comprises a hoisting upright post, a hoisting lug, a supporting rod and a lifting hook. The center of the lifting lug is a cylinder with a through hole, and 2-6 supporting beams are uniformly distributed on the outer side of the cylinder and used for hanging a workpiece; the hoisting lug penetrates from one end of the hoisting upright post and falls on the circular boss of the hoisting upright post; the top end of the hoisting upright post is welded with a support rod and a lifting hook. The special lifting appliance adopts a split structure, the lifting lugs at key stress positions are cast into an integral structure by using heat-resistant steel with higher strength, and other non-vulnerable positions adopt low-carbon steel. The special lifting appliance has the advantages of simple structure, high strength at high temperature and long service life, can be used for deep well furnace equipment of various models, and can ensure the product quality.

Description

Special lifting appliance for deep well type resistance furnace

Technical Field

The utility model relates to a heat treatment trade major axis class work piece hoist and mount apparatus, specifically speaking are deep-well formula resistance furnace special lifting device.

Background

At present, in the prior art, deep well furnace lifting appliances are manufactured by adopting a traditional manufacturing method, namely, a section of low-carbon steel round steel is sawed to be used as a main body lifting rod, and two cross-shaped low-carbon steel lifting lugs are welded at one end of the lifting rod to form an integrated structure. The lifting appliance is formed by welding low-carbon steel, the lifting lug is easy to deform under a high-temperature working state, the welding seam part is easy to tear, the service life is short, the lifting lug can deform or the welding seam is torn 3 to 5 times in average furnace charging, and therefore hung parts fall off and cannot be used. Moreover, due to the integral structure, after the lifting lug deforms, the lifting lug cannot be used integrally, and unnecessary waste of other parts is caused. The hanger has low strength at high temperature and short service life, and can not meet the current production requirements.

Disclosure of Invention

The utility model aims at providing a deep-well formula resistance furnace special lifting device can solve the above-mentioned problem that exists. The special lifting appliance is simple in structure, high in strength at high temperature, long in service life, convenient to use and capable of being used for deep well furnace equipment of various models, the workpieces are not prone to falling off, manufacturing cost is saved, and product quality can be guaranteed.

The utility model provides a technical scheme that its technical problem adopted is: the lifting appliance special for the pit-type resistance furnace adopts a split structure and consists of a lifting upright post 1, a lifting lug 2, a supporting rod 3 and a lifting hook 4. The hoisting upright post 1 is made of low-carbon steel, and the bottom of the upright post is provided with a circular boss; the center of the lifting lug 2 is a cylinder with a through hole, 2-6 supporting beams (the number is selected according to the diameter of a suspended workpiece) are uniformly distributed on the periphery of the outer side of the cylinder, 2 grooves are distributed on each supporting beam and used for suspending the workpiece, the supporting beams adopt a diagonal bracing rib type structure, the width of the supporting beams is gradually reduced from one side close to the center to the outer side, the lifting strength is ensured, and the weight can be reduced. The lifting lug 2 penetrates from one end of the lifting upright post 1 and falls on the circular boss of the lifting upright post, and the excircle size of the central cylinder of the lifting lug is consistent with that of the boss of the lifting upright post. The top end of the hoisting upright post 1 is welded with a support rod 3 and a lifting hook 4. The special lifting appliance adopts a split type structure of the lifting upright post and the lifting lug, the lifting lug at the key stress part of the heating area is cast into an integral structure by using heat-resistant steel with higher strength, and the heating part adopts the integral structure to avoid the problem that a welding seam is easy to tear under a high-temperature bearing state. Other non-vulnerable parts adopt low-carbon steel, so that the manufacturing cost is saved, and the strength of the workpiece during suspension can be well ensured. When the replacement is carried out, only the hoisting lug 2 needs to be taken away, and other parts can be reused.

The beneficial effects of the utility model are that, this special lifting device simple structure, intensity is high under the high temperature, and the work piece is difficult for droing, and long service life practices thrift manufacturing cost, and convenient to use can be used to the deep well stove equipment of various models, can guarantee product quality.

Drawings

FIG. 1 is a front view of the special sling for deep well type resistance furnace of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a drawing of a part of a hoisting column numbered 1 in FIG. 1;

FIG. 4 is a drawing of the part of the lifting lug of FIG. 1, numbered 2;

fig. 5 is the working schematic diagram of the special lifting device for the deep well type resistance furnace.

In fig. 1: 1. the lifting device comprises a lifting upright column, 2 lifting lugs, 3 supporting rods and 4 lifting hooks.

In fig. 5: A. the lifting device special for the deep-well type resistance furnace comprises a deep-well type resistance furnace body B, a furnace cover C, a workpiece D and a resistance wire E.

The specific implementation mode is as follows:

the lifting appliance special for the pit-type resistance furnace adopts a split structure and consists of a lifting upright post 1, a lifting lug 2, a supporting rod 3 and a lifting hook 4. The bottom of the hoisting upright post 1 is provided with a circular boss; the center of the lifting lug 2 is a cylinder with a through hole, 2-6 supporting beams (the number is selected according to the diameter of a suspended workpiece) are uniformly distributed on the periphery of the outer side of the cylinder, 2 grooves are distributed on each supporting beam and used for suspending the workpiece, the lifting lug 2 penetrates through one end of the lifting upright post 1 and falls on a circular boss of the lifting upright post, and the excircle size of the cylinder in the center of the lifting lug 2 is consistent with that of the boss of the lifting upright post. The top end of the hoisting upright post 1 is welded with a support rod 3 and a lifting hook 4.

When the lifting device works, the special lifting device is fixed on the support above the pit, one end of the workpiece is welded with the hook, then the workpiece is lifted to be hung at the groove of the lifting lug 2 supporting plate, 1 part can be hung on each supporting plate of the large-sized workpiece, and 2 parts can be hung on each small-sized workpiece. After the workpieces are hung, the special lifting appliance with the workpieces is lifted by a crane, the furnace cover is moved to the position above the deep-well type resistance furnace, the special lifting appliance is slowly placed into the furnace, the supporting rods 3 of the special lifting appliance are placed on the two cross beams above the furnace cover, the special lifting appliance and the workpieces are suspended in a hearth, the position of the special lifting appliance is adjusted, the furnace cover is closed, and the equipment can be operated to carry out heat treatment on the workpieces.

Claims

1. The utility model provides a deep-well formula resistance furnace special lifting device, characterized by: the lifting device is composed of a lifting upright post (1), a lifting lug (2), a supporting rod (3) and a lifting hook (4), wherein the lifting upright post (1) is made of low-carbon steel, and the bottom of the upright post is provided with a circular boss; hoist and mount ear (2) adopt heat-resistant steel casting to become an organic whole structure, the cylinder of center for having the through-hole, evenly distributed 2-6 supporting beam all around the cylinder outside, it has 2 recesses to distribute on every supporting beam, a structure for hanging the work piece, a supporting beam adopts the diagonal tension bar formula, from being close to center one side to outside width diminish gradually, hoist and mount ear (2) penetrate from hoist and mount stand (1) one end and fall on hoist and mount stand circular boss, hoist and mount ear (2) center cylinder excircle size and hoist and mount stand boss excircle size unanimity, hoist and mount stand (1) top has welded bracing piece (3) and lifting hook (4).