CN111635971A - Device for dismounting blast furnace blowpipe - Google Patents
Device for dismounting blast furnace blowpipe Download PDFInfo
- Publication number
- CN111635971A CN111635971A CN202010555333.6A CN202010555333A CN111635971A CN 111635971 A CN111635971 A CN 111635971A CN 202010555333 A CN202010555333 A CN 202010555333A CN 111635971 A CN111635971 A CN 111635971A
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- oil cylinder
- trolley
- blow pipe
- support
- flat plate
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 238000012423 maintenance Methods 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 4
- 238000007664 blowing Methods 0.000 description 9
- 238000005520 cutting process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/16—Tuyéres
- C21B7/163—Blowpipe assembly
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model provides a device of dismouting blast furnace blowpipe, belongs to blast furnace maintenance equipment technical field for dismouting blast furnace blowpipe. The technical scheme is as follows: the movable trolley consists of a trolley flat plate and a trolley wheel, a blow pipe support is an N-shaped steel frame, the lower end of the blow pipe support is fixedly connected to the front portion of the trolley flat plate, an upper oil cylinder and a lower oil cylinder are vertically fixed to the rear portion of the trolley flat plate, an oil cylinder support is welded to the front ends of oil cylinder piston rods of the upper oil cylinder and the lower oil cylinder, the blow pipe support and the oil cylinder support are opposite to the lower portion of a blow pipe respectively, a front oil cylinder and a rear oil cylinder are fixed to the front end of the trolley flat plate, a hydraulic motor and a hydraulic pump are fixed to the trolley flat plate. The invention has simple structure and convenient operation, can accurately and quickly finish the disassembly operation of the blowpipe, improves the precision of the installation of the blowpipe, reduces installation personnel, reduces labor intensity, ensures safety, shortens maintenance time and improves working efficiency.
Description
Technical Field
The invention relates to a device for dismounting a blast furnace blowpipe in blast furnace production operation, belonging to the technical field of blast furnace maintenance equipment.
Background
The blow pipe is the most terminal device of the blast furnace air inlet system, and the terminal thereof is connected with the tuyere small sleeve to supply air into the furnace. The blowpipe is not easy to damage, but the tuyere small sleeve connected with the blowpipe is a vulnerable part in a blast furnace system, and the tuyere small sleeve is often damaged and leaked to cause replacement, and the blowpipe is required to be detached firstly to operate when the tuyere small sleeve is replaced. The large blast furnace can be operated by using a professional mechanical vehicle due to the wide tuyere platform. And the tuyere platform of small blast furnace has cross operation because the area is little and change tuyere small jacket, and professional mechanical vehicle can't move and open, and large-scale mechanical equipment is also not suitable for the blast furnace of a long time in the year because the big frequent crushing wind gap platform of self weight, and the blowpipe can only pass through manual work when dismantling these blast furnaces. At present, the manual disassembly and assembly of the blowpipe is completed by matching an electric hoist and a manual chain block. When dismantling the blowpipe, hang the chain block at the eminence earlier, then the hook catches the blowpipe front end, and the blowpipe rear end is hoisted by the electric hoist, and all blowpipe fixing bolt are cut off to reuse gas cutting, then the blowpipe is slowly lifted off to the cooperation back and forth. When the blowing pipe is installed, the opposite is performed, and after the blowing pipe is installed in place, all the fixing bolts are screwed down manually by using a wrench.
The method for manually disassembling and assembling the blow pipe has the following defects:
1. the rear ends of the electric hoist and the blowing pipe are not on the same vertical line, the blowing pipe is easy to run backwards during hoisting, the front end of the blowing pipe is required to be pulled by a hanging chain, the electric hoist and the blowing pipe must be accurately matched, and the operation is required by experienced personnel, otherwise, the phenomenon that the blowing pipe cannot be installed at the position and runs out of wind often occurs, the safety of a blast furnace air supply system is influenced, the operation speed is slow, and the precision is low;
2. the manual pulling of the chain block at the front end is labor-consuming, needs to be completed by multiple persons, and the persons need to stand at the upper part of the tuyere and close to the furnace shell for operation, and is high in temperature, free of a professional maintenance platform and unsafe;
3. after the blowpipe is pulled in place, a plurality of persons are required to cooperate with a spanner, a sleeve and a sledgehammer to screw the bolts one by one, which is labor-consuming and time-consuming;
4. about 6-8 persons are needed to replace one lance, and about 2 hours are consumed, which is a key link affecting the maintenance of the blast furnace.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a device for dismounting a blast furnace blowpipe, which can quickly finish the operation of replacing the blowpipe, improve the precision of mounting the blowpipe, avoid the occurrence of a wind leakage phenomenon, simultaneously reduce mounting personnel, reduce labor intensity, ensure safety, shorten maintenance time and improve maintenance work efficiency.
The technical scheme for solving the technical problems is as follows:
a device for dismounting a blast furnace blowpipe comprises a travelling car, a blowpipe support, a hydraulic motor, a hydraulic pump, an upper oil cylinder, a lower oil cylinder, a front oil cylinder, a rear oil cylinder and an oil cylinder support, wherein the travelling car consists of a car flat plate and car wheels, the four car wheels are respectively arranged below the car flat plate, the blowpipe support is an N-shaped steel frame, the lower end of the blowpipe support is fixedly connected to the front part of the car flat plate, the upper oil cylinder and the lower oil cylinder are vertically fixed to the rear part of the car flat plate, the oil cylinder support is welded to the front ends of oil cylinder piston rods of the upper oil cylinder and the lower oil cylinder, the blowpipe support and the oil cylinder support are respectively opposite to the lower part of the blowpipe, the front oil cylinder and the rear oil cylinder are fixed to.
According to the device for disassembling and assembling the blast furnace blowpipe, the trolley wheels are universal wheels, trolley fixing pins are respectively installed at four corners of a trolley flat plate, the trolley fixing pins are vertically downward, the adjusting fixing pins are arranged on the side faces of the trolley fixing pins, and the front ends of the adjusting fixing pins are opposite to the side faces of the trolley fixing pins.
According to the device for dismounting the blast furnace blowpipe, the upper end of the blowpipe support is provided with the arc-shaped support, the radian of the arc-shaped support is matched with the radian of the circumference of the front part of the blowpipe, the oil cylinder support is arc-shaped, and the radian of the oil cylinder support is matched with the radian of the circumference of the rear part of the blowpipe.
According to the device for dismounting the blast furnace blowpipe, the front end of the flat plate of the trolley is welded with the front and rear oil cylinder fixing steel plates, the rear ends of the front and rear oil cylinders are connected to the front end faces of the front and rear oil cylinder fixing steel plates through the pin shafts, the rear ends of the front and rear oil cylinders are rotatably connected with the pin shafts, and the front ends of the oil cylinder piston rods of the front and rear oil cylinders are connected with the furnace shell fixing steel plates through the pin shafts.
The invention has the beneficial effects that:
the blast furnace blowpipe which needs to be disassembled or assembled can be moved away or fed into the travelling car, the blowpipe bracket and the upper and lower oil cylinders on the travelling car can support the blowpipe to move along with the travelling car, the blowpipe fixing bolt can be easily screwed up by the tightly blowing pipe pushed by the upper and lower oil cylinders, the front and rear positions of the travelling car can be adjusted by the front and rear oil cylinders, and the hydraulic motor and the hydraulic pump provide hydraulic power for the upper and lower oil cylinders and the front and rear oil cylinders through the high-pressure oil pipe.
The invention has simple structure and convenient operation, replaces a hoisting electric hoist and a manual chain block by using a hydraulic device, can accurately and quickly finish the disassembly operation of the blowpipe, improves the precision of the installation of the blowpipe, simultaneously reduces installation personnel, reduces labor intensity, ensures safety, shortens maintenance time, saves time and labor, improves maintenance work efficiency, and thoroughly solves the technical problems that the small-sized blast furnace tuyere platform has small space or the large-sized blast furnace tuyere platform cannot be used for mechanical vehicle operation after being overhauled for a long time when the blowpipe of the blast furnace is disassembled and assembled.
Drawings
FIG. 1 is a schematic structural view of the present invention;
figure 2 is a schematic view of the construction of the blow tube holder.
The labels in the figure are: the device comprises a movable trolley 1, a trolley wheel 2, a blow pipe support 3, an upper oil cylinder 4, a lower oil cylinder 4, a hydraulic motor 5, a hydraulic pump 6, a front oil cylinder 7, a rear oil cylinder 7, an oil cylinder support 8, a trolley fixing pin 9, an adjusting fixing pin 10, a furnace shell steel plate 11, a furnace shell fixing steel plate 12, a front oil cylinder fixing steel plate 13, a blow pipe 14, a blow pipe fixing bolt 15 and an air inlet short pipe 16.
Detailed Description
The invention is composed of a travelling car 1, a blowpipe bracket 3, an upper oil cylinder 4, a lower oil cylinder 4, a hydraulic motor 5, a hydraulic pump 6, a front oil cylinder 7, a rear oil cylinder 7, an oil cylinder bracket 8, a car fixing pin 9, an adjusting fixing pin 10 and a front oil cylinder fixing steel plate 13.
Fig. 1 and 2 show that the mobile carriage 1 consists of a carriage plate and small wheels 2. Four small wheels 2 are respectively arranged below the flat plate of the trolley, and the small wheels 2 are universal wheels and can freely turn and flexibly move.
Fig. 1 and 2 show that four corners of a trolley plate are respectively provided with trolley fixing pins 9, the trolley fixing pins 9 are vertically downward, the trolley fixing pins 9 are inverted cones, and the movable trolley 1 can be fixed on the ground after being put down. The side of the trolley fixing pin 9 is provided with an adjusting fixing pin 10, the front end of the adjusting fixing pin 10 is opposite to the side of the trolley fixing pin 9, and the adjusting fixing pin 10 can position the trolley fixing pin 9 to prevent the trolley fixing pin 9 from loosening.
Fig. 1 and 2 show that the blow pipe support 3 is an N-shaped steel frame, and the blow pipe support 3 is made of channel steel through welding. The lower end of the blowpipe support 3 is fixedly connected to the front part of the flat plate of the trolley, the upper end of the blowpipe support 3 is provided with an arc-shaped support, and the radian of the arc-shaped support is matched with the radian of the circumference of the front part of the blowpipe 14. The height of the blow pipe bracket 3 is fixed, and when the movable trolley 1 moves to the lower part of the blow pipe 14, the circular arc bracket at the upper end of the blow pipe bracket 3 is positioned at the bottom of the blow pipe 14 with a slight gap.
Fig. 1 shows that the upper and lower oil cylinders 4 are vertically fixed at the rear part of the flat plate of the trolley, the oil cylinder bracket 8 is welded at the front end of the oil cylinder piston rod of the upper and lower oil cylinders 4, the oil cylinder bracket 8 is arc-shaped, and the radian of the oil cylinder bracket 8 is matched with the radian of the circumference at the rear part of the blowpipe 14. When the cylinder piston rods of the upper and lower cylinders 4 extend upwards, the cylinder bracket 8 can be propped against the bottom surface at the rear part of the blow pipe 14, and the blow pipe 14 is lifted upwards or the blow pipe 14 is supported downwards.
Fig. 1 shows that front and rear cylinder fixing steel plates 13 are welded at the front ends of the flat plates of the trolley, the rear ends of the front and rear cylinders 7 are connected to the front end faces of the front and rear cylinder fixing steel plates 13 through pin shafts, the rear ends of the front and rear cylinders 7 are rotatably connected with the pin shafts, and the front and rear cylinders 7 can do circular arc motion up and down. The front ends of the cylinder piston rods of the front and rear cylinders 7 are connected with the furnace shell fixing steel plate 12 through pin shafts. The front and rear oil cylinders 7 can drive the movable trolley 1 and the blow pipe 14 arranged on the movable trolley 1 to move back and forth through the back and forth movement of the oil cylinder piston rods.
Fig. 1 shows that a hydraulic motor 5 and a hydraulic pump 6 are fixed on a flat plate of the trolley, the hydraulic motor is connected with the hydraulic pump 6, and the hydraulic pump 6 is respectively connected with an upper oil cylinder 4, a lower oil cylinder 4 and a front oil cylinder 7 and a rear oil cylinder 7 through high-pressure oil pipes to provide hydraulic power for the upper oil cylinder 4 and the rear oil cylinder 7.
The using method of the invention is as follows:
operation for removing blow pipe 14
Loosening and unloading the drawn wire of the blowpipe 14, pushing the movable trolley 1 to the lower part of the blowpipe 14, adjusting the position of the movable trolley 1, aligning the blowpipe bracket 3 with the center of the blowpipe 14, and lowering the trolley fixing pin 9 to fix the movable trolley 1; the front oil cylinder 7 and the rear oil cylinder 7 are operated to extend out of oil cylinder piston rods to proper positions, and the oil cylinder piston rods are fixedly connected with the furnace shell fixing steel plates 12 through pin shafts; lifting the cylinder piston rods of the upper and lower cylinders 4 to enable the cylinder supports 8 to prop against the bottom of the blow pipe 14, cutting off all blow pipe fixing bolts 15 by gas welding, and then operating the upper and lower cylinders 4 to slowly put down the blow pipe 14; after the blow pipe 14 falls on the blow pipe support 3, the upper oil cylinder and the lower oil cylinder 4 are fixed, the trolley fixing pin 9 is pulled up, the front oil cylinder and the rear oil cylinder 7 are operated, the oil cylinder piston rods extend out to push the movable trolley 1 to move backwards, after the blow pipe 14 completely exits from the tuyere small sleeve, the pin shafts at the front ends of the oil cylinder piston rods of the front oil cylinder and the rear oil cylinder 4 are pulled out, the oil cylinder piston rods are separated from the furnace shell fixing steel plate 12, and the blow pipe 14 is manually pushed to a safe position by.
Operation of installing lance tube 14
Pushing the processed blow pipe 14 to a working position, adjusting the position of the movable trolley 1 to align with the tuyere small sleeve, extending out oil cylinder piston rods of the front oil cylinder 7 and the rear oil cylinder 7, fixing the oil cylinder piston rods on a furnace shell fixing steel plate 12 by using pin shafts, operating the front oil cylinder 7 and the rear oil cylinder 7, shrinking the oil cylinder piston rods to pull the movable trolley 1 to move forwards, extending the front end of the blow pipe 14 into the tuyere small sleeve, aligning the two, continuously tensioning, and locking the front oil cylinder 7 and the rear oil cylinder 7 when the pressure of the oil cylinders reaches 6M; adjusting the movable trolley 1 to enable the flange of the blow pipe 14 to be aligned with the flange of the air inlet short pipe 16, slowly lifting the cylinder piston rod of the upper cylinder 4 and the lower cylinder 4 to jack the blow pipe 14, continuously applying pressure to enable the blow pipe 14 to be tightly contacted with the flange of the air inlet short pipe 16, and locking the upper cylinder and the lower cylinder when the pressure of the cylinders reaches 8 Mpa; a blowpipe fixing bolt 15 is put in and is screwed by a spanner; drawing and screwing the upper blowing pipe 14; and (3) putting down the cylinder piston rods of the upper and lower cylinders 2, pulling out the pin shafts at the front ends of the cylinder piston rods of the front and rear cylinders 7 of the movable trolley 1, separating the cylinder piston rods from the furnace shell fixing steel plate 12, and withdrawing the movable trolley 1 to finish the operation.
One embodiment of the invention is as follows:
the length of a trolley flat plate of the movable trolley 1 is 1300mm, the width of the trolley flat plate is 700mm, and the diameter of the small wheel 2 is 300 mm;
the blow pipe bracket 3 is welded by channel steel, the height is 700mm, and the width is 600 mm;
the model of the upper and lower oil cylinders 4 is 125 multiplied by 68 multiplied by 700, 8T;
the type of the hydraulic motor 5 is 2.2KW (380V50HZ), and the maximum pressure is 10 Mpa;
the hydraulic pump 6 is of type DBS 10D;
the model of the front and rear oil cylinders 7 is 80 multiplied by 50 multiplied by 800, 5T;
the diameter of the trolley fixing pin 9 is 25mm, and the length of the trolley fixing pin is 300 mm;
the length of the front and rear oil cylinder fixing steel plate 13 is 100mm, and the height thereof is 100 mm.
Claims (4)
1. A device for dismounting a blast furnace blowpipe is characterized in that: the blow pipe type automatic blow pipe device comprises a movable trolley (1), a blow pipe support (3), a hydraulic motor (5), a hydraulic pump (6), an upper oil cylinder, a lower oil cylinder (4), a front oil cylinder, a rear oil cylinder and an oil cylinder support (8), wherein the movable trolley (1) is composed of a trolley flat plate and small wheels (2), the four small wheels (2) are respectively installed below the trolley flat plate, the blow pipe support (3) is an N-shaped steel frame, the lower end of the blow pipe support (3) is fixedly connected to the front part of the trolley flat plate, the upper oil cylinder and the lower oil cylinder (4) are vertically fixed to the rear part of the trolley flat plate, the oil cylinder support (8) is welded to the front end of an oil cylinder piston rod of the upper oil cylinder and the lower oil cylinder (4), the blow pipe support (3) and the oil cylinder support (8) are respectively opposite to the lower part of a blow pipe (14), the front oil cylinder and the rear oil cylinder (7, the hydraulic pump (6) is respectively connected with the upper and lower oil cylinders (4) and the front and rear oil cylinders (7) through high-pressure oil pipes.
2. The apparatus for disassembling and assembling blast furnace lance tube according to claim 1, wherein: the trolley is characterized in that the trolley wheels (2) are universal wheels, trolley fixing pins (9) are respectively installed at four corners of a trolley flat plate, the trolley fixing pins (9) are vertically downward, adjusting fixing pins (10) are arranged on the side faces of the trolley fixing pins (9), and the front ends of the adjusting fixing pins (10) are opposite to the side faces of the trolley fixing pins (9).
3. The apparatus for disassembling and assembling blast furnace lance tube according to claim 1, wherein: the upper end of the blow pipe support (3) is provided with an arc-shaped support, the radian of the arc-shaped support is matched with the circumferential radian of the front part of the blow pipe (14), the oil cylinder support (8) is arc-shaped, and the radian of the oil cylinder support (8) is matched with the circumferential radian of the rear part of the blow pipe (14).
4. The apparatus for disassembling and assembling blast furnace lance tube according to claim 1, wherein: the front end of the flat plate of the trolley is welded with front and rear oil cylinder fixing steel plates (13), the rear ends of the front and rear oil cylinders (7) are connected to the front end faces of the front and rear oil cylinder fixing steel plates (13) through pin shafts, the rear ends of the front and rear oil cylinders (7) are rotatably connected with the pin shafts, and the front ends of oil cylinder piston rods of the front and rear oil cylinders (7) are connected with the furnace shell fixing steel plates (12) through the pin shafts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010555333.6A CN111635971A (en) | 2020-06-17 | 2020-06-17 | Device for dismounting blast furnace blowpipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010555333.6A CN111635971A (en) | 2020-06-17 | 2020-06-17 | Device for dismounting blast furnace blowpipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111635971A true CN111635971A (en) | 2020-09-08 |
Family
ID=72326944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010555333.6A Pending CN111635971A (en) | 2020-06-17 | 2020-06-17 | Device for dismounting blast furnace blowpipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111635971A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112813213A (en) * | 2020-12-30 | 2021-05-18 | 北京中冶设备研究设计总院有限公司 | Blast furnace belly pipe bolt locking and dismounting device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103432A (en) * | 1993-12-01 | 1995-06-07 | 鞍山钢铁公司 | Traveling bent pipe-belly pipe disassembly-and-assembly machine |
| JPH08283812A (en) * | 1995-02-18 | 1996-10-29 | Sankyu Inc | Blow pipe exchanging machine |
| CN203728865U (en) * | 2013-12-17 | 2014-07-23 | 鞍钢重型机械有限责任公司 | Tuyere replacing trolley for dismounting tuyere small sleeve of blast furnace |
| CN208395215U (en) * | 2018-05-28 | 2019-01-18 | 河北鑫达钢铁有限公司 | A kind of blast-furnace tuyere blowpipe loading-unloading vehicle |
| CN209039513U (en) * | 2018-09-12 | 2019-06-28 | 上海宝冶集团有限公司 | Trolley is used in a kind of dismounting of blast-furnace tuyere belly pipe |
| CN212669731U (en) * | 2020-06-17 | 2021-03-09 | 邯郸钢铁集团有限责任公司 | Device for dismounting blast furnace blowpipe |
-
2020
- 2020-06-17 CN CN202010555333.6A patent/CN111635971A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103432A (en) * | 1993-12-01 | 1995-06-07 | 鞍山钢铁公司 | Traveling bent pipe-belly pipe disassembly-and-assembly machine |
| JPH08283812A (en) * | 1995-02-18 | 1996-10-29 | Sankyu Inc | Blow pipe exchanging machine |
| CN203728865U (en) * | 2013-12-17 | 2014-07-23 | 鞍钢重型机械有限责任公司 | Tuyere replacing trolley for dismounting tuyere small sleeve of blast furnace |
| CN208395215U (en) * | 2018-05-28 | 2019-01-18 | 河北鑫达钢铁有限公司 | A kind of blast-furnace tuyere blowpipe loading-unloading vehicle |
| CN209039513U (en) * | 2018-09-12 | 2019-06-28 | 上海宝冶集团有限公司 | Trolley is used in a kind of dismounting of blast-furnace tuyere belly pipe |
| CN212669731U (en) * | 2020-06-17 | 2021-03-09 | 邯郸钢铁集团有限责任公司 | Device for dismounting blast furnace blowpipe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112813213A (en) * | 2020-12-30 | 2021-05-18 | 北京中冶设备研究设计总院有限公司 | Blast furnace belly pipe bolt locking and dismounting device |
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