CN216638621U

CN216638621U - Kaldo furnace hoist

Info

Publication number: CN216638621U
Application number: CN202122706381.3U
Authority: CN
Inventors: 孙先如; 王爱荣; 何后闩; 李春侠; 左池舟; 王刚
Original assignee: Jinlong Copper Co ltd; Tongling Nonferrous Metals Group Co Ltd
Current assignee: Jinlong Copper Co ltd; Tongling Nonferrous Metals Group Co Ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-05-31
Anticipated expiration: 2031-11-05

Abstract

The utility model provides a Kaldo furnace lifting appliance, which comprises a connecting plate connected with a flange plate through a bolt, wherein the connecting plate is connected with the lifting appliance. Form bolted connection through original bolt hole on platelike structure and the annular plate-like ring flange for connect more firmly stably, can not destroy ring flange structure simultaneously.

Description

Kaldo furnace hoist

Technical Field

The utility model relates to the field of hoisting and installation, in particular to a Kaldo furnace hoisting tool.

Background

The Kaldo furnace is also called as oxygen oblique blowing converter, and in the metal smelting industry, the Kaldo furnace is mainly applied to smelting and blowing of high-grade or complex-component copper concentrate, smelting of lead concentrate and tin concentrate, dilution of copper converter slag, treatment of copper smoke dust with high lead and zinc content, smelting of reclaimed copper and the like.

As shown in the figure, the Kaldo furnace is a steel container lined with refractory bricks, and the structure of the Kaldo furnace comprises a furnace cap and a furnace body, wherein the furnace cap and the furnace body jointly form an egg-shaped structure, and the furnace cap and the furnace body are connected through a flange plate.

In the prior art, three lifting lugs are arranged on the upper portion of the furnace cap in the circumferential direction, the Kaldo furnace is firstly straightened to enable the shaft core to be located in the vertical direction during hoisting, then the three lifting lugs are connected with a lifting hook through a steel wire rope, and then the furnace cap and the furnace body are integrally hoisted out of the annular driving mechanism.

However, the total body (including bricks) of the Kaldo furnace weighs approximately 50 tons, with the cap (including bricks) weighing 9.70 tons; the weight of the furnace body (without furnace cap and with bricks) is 39.575 tons. The total furnace body weight of the Kaldo furnace is extremely close to the upper limit of the hoisting weight of a common 50-ton crane, and the conventional 50-ton crane is difficult to hoist once the phenomena of clamping stagnation, material accumulation in the furnace and the like occur.

Meanwhile, the height of the crane hook completing the hoisting in the prior art is equal to the height of the annular driving mechanism, the height of the furnace body, the height of the furnace cap and the height of the lifting appliance. The height usually exceeds the maximum hoisting height of the crane in the field construction process, the upper limit of the crane is removed to lift the hoisting height by a common method, however, the method has serious potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a Kaldo furnace lifting appliance which can effectively shorten the lifting height required by a crane.

In order to achieve the purpose, the utility model adopts the technical scheme that: a Kaldo furnace hoist comprises a connecting plate connected with a flange plate through bolts, and the connecting plate is connected with the hoist.

The original bolt holes on the plate-shaped structure and the annular plate-shaped flange form bolt connection, so that the connection is more stable and stable, and the flange structure cannot be damaged.

Drawings

FIG. 1 is a schematic view of the structure of a Kaldo furnace;

FIG. 2 is a top view of the present invention;

FIG. 3 is a front view of the present invention;

FIG. 4 is a side view of the present invention;

fig. 5 is a schematic view of the structure of a steel chain.

Detailed Description

A Kaldo furnace hoisting method comprises the following steps: A. rotating the Kaldo furnace to enable the shaft core to be positioned in the vertical direction; this step is not required for other furnace structures that are themselves vertically arranged. B. The furnace cap 1 and the furnace body 2 are detached from the connecting flange; C. connecting a lifting lug 1a arranged at the upper part of the furnace cap 1 with a lifting hook through a lifting rope, and then lifting and disassembling the furnace cap 1; D. the lifting hook is connected with the furnace body 2 through a lifting appliance, and then the furnace body 2 is lifted and disassembled. Through carrying out the split hoist and mount with Kaldo stove in above-mentioned scheme, avoid the weight of whole furnace body to exceed the upper limit of lifting machine. Simultaneously in this application twice hoist and mount highly do respectively: the height of the crane hook for completing the hoisting of the furnace cap 1 is equal to the height of the annular driving mechanism, the height of the furnace cap 1 and the height of a lifting appliance; the height of the crane hook for completing the hoisting of the furnace body 2 is equal to the height of the annular driving mechanism, the height of the furnace body 2 and the height of the lifting appliance. After the split hoisting is adopted, the maximum hoisting capacity is only 39.575t, and the hoisting space, namely the height of the furnace cap, is increased by 1.195 m.

The lifting appliance is connected with a flange 2a arranged at the upper part of the furnace body 2. The furnace cap 1 is provided with a lifting lug for hanging, and the furnace body 2 is not provided with a corresponding lifting lug, so that the lifting tool is directly connected with the flange plate 2a on the furnace body 2, and the welding lifting lug is prevented from damaging the structure of the furnace body 2.

A Kaldo furnace hoist, includes the connecting plate 10 that constitutes bolted connection with ring flange 2a, and connecting plate 10 links to each other with the hoist. Form bolted connection through original bolt hole on platelike structure and the annular plate-like ring flange 2a for connect more firmly stably, can not destroy ring flange 2a structure simultaneously.

At least three connecting plates 10 are arranged on the flange plate 2a at intervals in the circumferential direction. If only set up two connecting plates 10 and easily produce the skew rocking that causes furnace body 2 of central authorities.

An ear plate 20 is arranged above the connecting plate 10, and an ear hole 21 on the ear plate 20 is movably connected with the steel chain 30 through a U-shaped buckle. The flat plate-shaped coupling plate 10 is inconvenient to couple and to open a coupling hole, and thus the lug plate 20 is provided.

All the steel chains 30 are equal in length and are intersected with the connecting buckle 40 to form a movable connection, and the connecting buckle 40 is connected with the lifting hook. This allows the hook position to be substantially on the axis of the furnace body 2, and the center of gravity of the furnace body is also on the axis of the furnace body 2, which facilitates the maintenance of the furnace body 2 upright.

The surface of the ear plate 20 is deflected towards the position of the connecting buckle 40, and the surface direction of the ear plate 20 is consistent with the length direction of the steel chain 30. The steel chain 30 is prevented from generating bending force when being pulled to the ear plate 20, so that the ear plate 20 only needs to bear tensile stress, and the joint of the ear plate 20 and the connecting plate is prevented from being cracked.

The ear plate 20 is integrally of an isosceles triangle plate structure, the connecting plate 10 is of an arc-shaped plate structure which is symmetrical about a vertical line in the isosceles triangle, and the ear holes 21 are formed in positions close to the vertex angles. The point of action of the steel chain 30 is thus located in the middle of the connecting plate 10, so that the entire connecting plate is stressed evenly.

The included angle between the ear plate 20 and the connecting plate 10 is 60 degrees. This makes the steel chain 30 connection more stable.

Rib plates 50 with plate surfaces perpendicular to the plate surfaces of the ear plates 20 and the connecting plate 10 are arranged in the obtuse angle areas of the ear plates 20 and the connecting plate 10. The structural strength of the ear plate 20 and the connecting plate 10 is reinforced.

Claims

1. The utility model provides a kardolo stove hoist which characterized in that: including constituting bolted connection's connecting plate (10) with ring flange (2a), connecting plate (10) link to each other with the hoist, connecting plate (10) circumference interval arrangement has at least three on ring flange (2a), connecting plate (10) top is provided with otic placode (20), and earhole (21) on otic placode (20) are detained through the U-shaped and are connected with steel chain (30) swing joint.

2. The Kaldo furnace hoist of claim 1, characterized in that: all the steel chains (30) are equal in length and are intersected with the connecting buckle (40) to form movable connection, and the connecting buckle (40) is connected with the lifting hook.

3. The Kaldo furnace hoist of claim 2, characterized in that: the surface of the lug plate (20) deflects towards the position where the connecting buckle (40) is positioned, and the surface direction of the lug plate (20) is consistent with the length direction of the steel chain (30).

4. The Kaldo furnace hoist of claim 1, characterized in that: the ear plate (20) is integrally of an isosceles triangle plate structure, the connecting plate (10) is of an arc-shaped plate structure which is symmetrical about a vertical line in the isosceles triangle, and the ear holes (21) are formed in positions close to the vertex angles.

5. The Kaldo furnace hoist of claim 3, characterized in that: the included angle between the ear plate (20) and the connecting plate (10) is 60 degrees.

6. The Kaldo furnace hoist of claim 3 or 5, characterized in that: rib plates (50) with the plate surfaces perpendicular to the ear plates (20) and the connecting plate (10) are arranged in the obtuse angle area of the ear plates (20) and the connecting plate (10).