CN-121992161-A - Dismounting device for quickly dismounting middle and small sleeves of blast furnace tuyere

CN121992161ACN 121992161 ACN121992161 ACN 121992161ACN-121992161-A

Abstract

The invention discloses a dismounting device for quickly dismounting a middle and small sleeve of a blast furnace tuyere, which comprises a walking vehicle body, a hydraulic hammer, a translation hydraulic cylinder and a tilting hydraulic cylinder which are assembled on the vehicle body, wherein an anchor hook is assembled at the hammer head end of the hydraulic hammer, a sliding seat is arranged between the hydraulic hammer and the vehicle body, one end of the hydraulic hammer is rotationally connected with the sliding seat, the other end of the hydraulic hammer is rotationally connected with the other end of the sliding seat through the tilting hydraulic cylinder, so as to realize driving the hydraulic hammer to tilt up and down and adjust the extension angle of the anchor hook, and the sliding seat is driven to advance and retract so as to enable the anchor hook to extend and retract, and the hook part is driven to hook the front end of the small sleeve or push against the front end of the small sleeve and the rear end of the small sleeve in the air opening, so that the anchor hook is correspondingly pulled out or pushed against the middle and small sleeves in the air opening, and the hook part is driven to strike the front end or the rear end of the middle and small sleeves synchronously, and therefore the small sleeve and the middle of the air opening can be disassembled and assembled quickly, the damping down time of a blast furnace is shortened, the labor intensity of workers is effectively reduced, and the production efficiency is improved.

Inventors

JIN WENHAO
HUO JINXING
LU XIAOYU
YANG CHANGXU

Assignees

中冶南方工程技术有限公司

Dates

Publication Date: 20260508
Application Date: 20241106

Claims (8)

1. The dismounting device for quickly dismounting the middle and small sleeves of the blast furnace tuyere is characterized by comprising a walkable car body and a hydraulic driving mechanism assembled on the car body; the hydraulic driving mechanism comprises a hydraulic hammer, a translation hydraulic cylinder and a tilting hydraulic cylinder; The hammer head end of the hydraulic-pneumatic hammer is provided with an anchor hook, the anchor hook is provided with a bent hook part, and the hook part is provided with an abutting plane for abutting against, striking the front end and the rear end of the tuyere and the small sleeve; The hydraulic and pneumatic hammer is characterized in that a sliding seat is arranged between the hydraulic and pneumatic hammer and the vehicle body, and the sliding seat is slidably assembled on the vehicle body, one end, close to the anchor hook, of the hydraulic and pneumatic hammer is rotationally connected with one end of the sliding seat, one end, away from the anchor hook, of the hydraulic and pneumatic hammer is rotationally connected with one end of the tilting hydraulic cylinder, the other end of the tilting hydraulic cylinder is rotationally connected with the other end of the sliding seat, and the tilting hydraulic cylinder is used for driving the hydraulic and pneumatic hammer to tilt up and down so as to adjust the stretching angle of the anchor hook on the hydraulic and pneumatic hammer; The translation hydraulic cylinder is in driving connection with the sliding seat so as to enable the sliding seat to advance and retreat and is used for driving the hook part to hook the front end of the small sleeve or prop against the rear end of the small sleeve and the middle sleeve of the air opening, so that the anchor hook is correspondingly pulled out or props against the small sleeve and the middle sleeve of the air opening; the liquid-air hammer is used for driving the hook part to strike the front end or the rear end of the middle and small sleeves of the tuyere so as to form a rapid disassembly and assembly device for the middle and small sleeves of the tuyere.
2. The device for quickly disassembling and assembling the middle and small sleeves of the blast furnace tuyere of claim 1, wherein the hydraulic driving mechanism further comprises a lifting driving assembly, the vehicle body comprises a base and a movable support, the lifting driving assembly is assembled on the base, the sliding seat is slidably assembled on the movable support, and the lifting driving assembly is in driving connection with the movable support to drive the movable support to lift and descend so as to adjust the height of the hook portion.
3. The device for quickly disassembling and assembling the middle and small sleeves of the blast furnace tuyere according to claim 2, wherein the lifting driving assembly comprises a lifting fork rod and a lifting hydraulic cylinder, the base is connected with the movable support through the lifting fork rod, and the lifting hydraulic cylinder is in driving connection with the lifting fork rod so as to drive the lifting fork rod to open and close, and further drive the movable support to lift and descend so as to coarsely adjust the height of the anchor hook.
4. The dismounting device for quickly dismounting the middle and small sleeves of the blast furnace tuyere according to any one of claims 1-3 is characterized by further comprising an operation valve table, wherein the operation valve table comprises a reversing valve, a throttle valve and a pressure reducing valve, the reversing valve is used for controlling the hydraulic oil entering direction of each hydraulic cylinder and each hydraulic hammer of the hydraulic driving mechanism and further controlling the action direction of each hydraulic cylinder and each hydraulic hammer, the throttle valve is used for adjusting the hydraulic oil flow of each hydraulic cylinder and each hydraulic hammer and further adjusting the action speed of each hydraulic cylinder and each hydraulic hammer, and the pressure reducing valve is used for adjusting the hydraulic oil pressure of each hydraulic cylinder and each hydraulic hammer and further adjusting the action force of each hydraulic cylinder and each hydraulic hammer.
5. The apparatus for quickly assembling and disassembling a middle and small sleeve of a tuyere of a blast furnace according to claim 4, further comprising a hydraulic station for supplying hydraulic oil to each hydraulic cylinder and hydraulic hammer of the hydraulic driving mechanism.
6. The dismounting device for quickly dismounting the middle and small sleeves of the blast furnace tuyere according to any one of claims 1-3, wherein universal travelling wheels are arranged at the bottom of the car body so that the car body can walk on a tuyere platform.
7. The apparatus for quickly assembling and disassembling a middle and small sleeve of a tuyere of a blast furnace according to claim 6, wherein the body is provided with a looper bolt for fixing the same to a tuyere platform.
8. The dismounting device for quickly dismounting the middle and small sleeves of the blast furnace tuyere according to any one of claims 1-3, wherein the anchor hook is provided with a connecting rod part, one end of the connecting rod part is fixedly connected with the hammer head end of the hydraulic-pneumatic hammer, and the other end of the connecting rod part is fixedly provided with the hook part.

Description

Dismounting device for quickly dismounting middle and small sleeves of blast furnace tuyere Technical Field The invention relates to the technical field of metallurgy, in particular to a dismounting device for quickly dismounting a middle and small sleeve of a blast furnace tuyere. Background In the smelting process of the iron-smelting blast furnace, about 1200 ℃ of hot air is blown to the blast furnace through a plurality of tuyeres, wherein a tuyere small sleeve and a tuyere medium sleeve closest to the interior of the furnace in a tuyere part are easy to burn out, so that the blast furnace needs to be replaced frequently, and particularly the blast furnace needs to be replaced frequently when the furnace condition is abnormal. Because the blast furnace is generally provided with several to tens of tuyeres according to the different sizes of furnace volumes, and is correspondingly provided with several to tens of tuyere sleeves, each tuyere sleeve comprises a small tuyere sleeve, a middle tuyere sleeve and a large tuyere sleeve, and the small tuyere sleeve, the middle tuyere sleeve and the large tuyere sleeve are in interference fit through mutual extrusion so as to achieve the sealing effect. When the blast furnace is in damping down, the number of the tuyere sleeves to be replaced is large, the workload is large, and the small tuyere sleeves are extremely difficult to detach from the large tuyere sleeves and replace and install due to the high-temperature thermal stress effect formed by the blast furnace, or the small tuyere sleeves are extremely difficult to detach from the large tuyere sleeves and replace and install, so that the disassembly and assembly of the small tuyere sleeves and the small tuyere sleeves are high in difficulty, high in labor intensity and long in time consumption. Disclosure of Invention Therefore, the invention aims to solve the problems, and provides a dismounting device for quickly dismounting and mounting the middle and small sleeves of the blast furnace tuyere, which can quickly dismounting and mounting the middle and small sleeves of the tuyere so as to reduce the damping down time of the blast furnace, effectively reduce the labor intensity of workers and improve the production efficiency. In order to achieve the above purpose, the technical scheme provided by the invention is as follows: The invention provides a dismounting device for quickly dismounting a middle and small sleeve of a blast furnace tuyere, which comprises a walking vehicle body and a hydraulic driving mechanism assembled on the vehicle body; the hydraulic driving mechanism comprises a liquid pneumatic hammer, a translation hydraulic cylinder and a tilting hydraulic cylinder, wherein an anchor hook is assembled at the hammer head end of the liquid pneumatic hammer, the anchor hook is provided with a bent hook part, the hook part is provided with an abutting plane for abutting against and striking the front end and the rear end of the air port, a sliding seat is arranged between the liquid pneumatic hammer and the vehicle body and is slidably assembled on the vehicle body, one end of the liquid pneumatic hammer, which is close to the anchor hook, is rotationally connected with one end of the sliding seat, one end of the liquid pneumatic hammer, which is away from the anchor hook, is rotationally connected with one end of the tilting hydraulic cylinder, the other end of the tilting hydraulic cylinder is rotationally connected with the other end of the sliding seat, the tilting hydraulic cylinder is used for driving the liquid pneumatic hammer to tilt up and down so as to adjust the extending angle of the anchor hook on the liquid pneumatic hammer, the translation hydraulic cylinder is in a driving way, so as to enable the sliding seat to advance and retreat, and is used for driving the hook part to hook the front end or the top end of the air port, the top end or the small sleeve, the front end or the rear end of the air port is in a sliding seat, and the air port is correspondingly arranged in a sliding way, and the air port or the small sleeve is in a pulling way, or the air port is correspondingly arranged in a sliding port or the small sleeve. The hydraulic driving mechanism further comprises a lifting driving assembly, the vehicle body comprises a base and a movable support, the lifting driving assembly is assembled on the base, the sliding seat is slidably assembled on the movable support, and the lifting driving assembly is in driving connection with the movable support to drive the movable support to lift and descend, so that the height of the hook portion is adjusted. Further, the lifting driving assembly comprises a lifting fork rod and a lifting hydraulic cylinder, the base is connected with the movable support through the lifting fork rod, the lifting hydraulic cylinder is in driving connection with the lifting fork rod so as to drive the lifting fork rod to open and close, and then drive the m