CN116022699A - Blast furnace air supply middle section replacement equipment and replacement method thereof - Google Patents
Blast furnace air supply middle section replacement equipment and replacement method thereof Download PDFInfo
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- CN116022699A CN116022699A CN202310029199.XA CN202310029199A CN116022699A CN 116022699 A CN116022699 A CN 116022699A CN 202310029199 A CN202310029199 A CN 202310029199A CN 116022699 A CN116022699 A CN 116022699A
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Abstract
The invention discloses a blast furnace air supply middle section replacement device and a replacement method, which are characterized in that an existing forklift is improved, a hydraulic control system and an air supply middle section branch pipe dismounting device which is quickly connected with the forklift are arranged on the forklift, a plurality of hydraulic pipelines are connected with a plurality of hydraulic control valves and a plurality of manual hydraulic reversing valves, the hydraulic control valves are connected with a plurality of hydraulic cylinders, a flange pressing claw connected with the hydraulic cylinders is used for pressing a lower flange of an air supply middle section branch pipe, and the air supply middle section branch pipe of the blast furnace is quickly dismounted and carried away. The invention is the most convenient and effective tool for realizing the quick replacement of the blast furnace air supply middle section, has good practicability and feasibility, and has good prospect of wide application.
Description
Technical Field
The invention relates to the technical field of blast furnace maintenance equipment, in particular to quick and convenient replacement equipment and a replacement method for an air supply middle section of a blast furnace.
Background
The blast furnace ironmaking is a continuous production process, the blast furnace air supply middle section equipment is used as a key component on a blast furnace air supply pipeline and works in a high-temperature and high-pressure production environment, and the service life and the reliability of the blast furnace air supply middle section equipment directly influence the normal production of the blast furnace. After the service life period of the blast furnace air supply middle-section equipment is reached, how to effectively, quickly and safely replace the equipment directly influences the continuity of blast furnace production. How to improve the maintenance efficiency in the maintenance of equipment, reduce the labor intensity and shorten the maintenance time is an effective means for improving the production efficiency of the blast furnace.
At present, when the blast furnace in China overhauls and changes air supply middle-section equipment, guide chain hoisting and replacement are mostly carried out manually. Because the weight of blast furnace air supply middle section equipment is very big, in the change in-process, the workman need draw air supply middle section equipment to the mounted position from ground and carry out the dismouting again. Therefore, the labor intensity of workers is very high, the maintenance time is long, and meanwhile, the potential safety hazard of broken guide chains or ropes exists when the guide chains are used for hoisting.
Disclosure of Invention
In order to solve the defects existing in the blast furnace air supply middle section equipment replacement process in the prior art, the invention provides a blast furnace air supply middle section replacement device with a brand-new design and a brand-new blast furnace air supply middle section replacement method, so as to overcome the defects existing in the prior art.
One of the technical schemes adopted by the invention is a blast furnace air supply middle section replacement device, which comprises a forklift and an operation function thereof; the hydraulic control system is characterized by comprising an air supply middle section branch pipe dismounting device arranged on the forklift and a hydraulic control system arranged on the forklift, wherein the forklift is provided with left and right lateral movement and forward tilting and backward tilting operation functions.
The dismounting device of the air supply middle branch pipe consists of a V-shaped bracket, a lower tray and a chain transmission device; the V-shaped bracket is arranged on the chain transmission device, the chain transmission device is arranged on a lower tray, and the lower tray is arranged on a fork of the forklift; the V-shaped support is provided with a plurality of pressing claws and a plurality of hydraulic cylinders connected with the pressing claws.
The hydraulic control system is formed by connecting a plurality of hydraulic control valves and a plurality of manual hydraulic reversing valves through a plurality of hydraulic pipelines by a hydraulic pump arranged on the forklift, and is connected with a plurality of hydraulic cylinders on the air supply middle section branch pipe dismounting device so as to provide hydraulic power for the air supply middle section branch pipe dismounting device. The hydraulic control system drives the fork of the forklift to integrally support the dismounting device of the air supply middle section branch pipe, the pressing claw is pushed by the hydraulic cylinder to overturn or move, so that the operation function of pressing the lower flange of the air supply middle section branch pipe is realized, and the hydraulic control system moves back and forth, tilts forward and backward and lifts the hydraulic control system through the forklift, so that the quick dismounting and transportation process of the air supply middle section branch pipe is realized.
The invention is also characterized in that the V-shaped bracket is provided with a plurality of pin shaft seats for installing the pressing claws and a plurality of hydraulic cylinder supports for installing the hydraulic cylinders, the pressing claws can overturn or move in the pin shaft seats, and the hydraulic cylinders can stretch back and forth on the hydraulic cylinder supports. According to the invention, 3 pressure claws which are distributed and installed and 3 hydraulic cylinders which are connected with the pressure claws are arranged on the V-shaped support, so that the pressure claws are driven to press the lower flange of the air supply middle branch pipe, and the air supply middle branch pipe can be conveniently disassembled and assembled in a limited space. The V-shaped bracket is a main support of the air supply middle branch pipe; the V-shaped bracket is designed into an L-shaped vertical bracket and a horizontal tray, the upper part of the L-shaped vertical bracket is designed into a V-shaped opening structure, the V-shaped bracket is used as an auxiliary support of an air supply middle section branch pipe when the air supply middle section branch pipe is disassembled and assembled, and the horizontal tray is used for supporting and supporting the components of the air supply middle section branch pipe and the weight of the air supply middle section branch pipe so as to ensure the disassembly and assembly safety of the air supply middle section branch pipe.
The chain transmission device comprises a rotary speed reducer, wherein the vertical V-shaped bracket is arranged on the rotary speed reducer; the chain transmission device is provided with a speed reducer transmission shaft connected with a speed reducer chain, a sprocket transmission shaft connected with a sprocket chain and an intermediate transmission shaft connected with the speed reducer chain and the two chains of the sprocket chain; the speed reducer chain and the chain wheel chain are vertically overlapped and arranged on the middle transmission shaft, and a manual wheel is arranged at one end of the chain wheel transmission shaft; and the rotation of the rotary speed reducer, the vertical V-shaped bracket and the horizontal tray is subjected to fine tuning through manual wheels. The speed reducer transmission shaft, the sprocket transmission shaft and the intermediate transmission shaft in the chain transmission device are respectively provided with a respective bearing seat and rotate in the respective bearing seats, and mechanical power is transmitted for the rotation of the rotary speed reducer, the vertical V-shaped bracket and the horizontal tray thereof.
The invention is further characterized in that a universal wheel assembly is arranged below the front end of the vertical V-shaped bracket so as to adjust the height error during the disassembly and assembly of the branch pipe in the middle section of air supply and facilitate the guiding of the replacement equipment. The fork of the forklift is vertically arranged, and fork sleeves are arranged on the two forks and welded on the tray. The hydraulic pump of the hydraulic control system is connected to the output end of the engine of the forklift and provides power for the hydraulic control system; the forklift and the air supply middle section branch pipe dismounting device can be connected quickly, and the air supply middle section branch pipe can be dismounted and transported quickly.
The invention also provides a method for replacing the blast furnace air supply middle section by adopting blast furnace air supply middle section replacement equipment, which comprises the following steps of:
1) The V-shaped bracket of the blast furnace air supply middle section replacement equipment is used as a support and an auxiliary support of the whole part of the air supply middle section branch pipe, and the accurate position of the lower flange of the air supply middle section branch pipe is found through the ascending, descending, forward tilting, backward tilting and left-right movement of a forklift;
2) The whole air supply middle section branch pipe dismounting device connected with the tray is lifted up through a fork of the forklift and rises to a lower flange at the bottom of the air supply middle section branch pipe;
3) Starting a hydraulic control system, driving a pressing claw to press a lower flange of the air supply middle branch pipe through a hydraulic cylinder connected with the pressing claw, and detaching an upper flange of the air supply middle branch pipe after the pressing claw is pressed without moving a forklift;
4) After the upper flange of the air supply middle section branch pipe is detached, the hydraulic cylinder pushes the pressing claw to be always in a state of pressing the lower flange of the air supply middle section branch pipe, and the fork of the blast furnace air supply middle section replacement equipment descends to a state capable of leaving and is opened out of a blast furnace site.
The method for installing the blast furnace air supply middle branch pipe comprises the following steps:
1) The blast furnace air supply middle section replacing equipment is provided with the air supply middle section branch pipe supported by the V-shaped support, and the hydraulic cylinder connected with the pressing claw drives the pressing claw to press the lower flange of the air supply middle section branch pipe, so that the blast furnace air supply middle section replacing equipment is operated to the bottom of the blast furnace air supply middle section branch pipe needing to be replaced;
2) The fork on the forklift of the blast furnace air supply middle section replacement equipment integrally supports the air supply middle section branch pipe dismounting device, so that the air supply middle section branch pipe is lifted to the joint of the flanges at the upper parts of the air supply middle section branch pipes, and the accurate positions of the flanges on the air supply middle section branch pipes are found through lifting, descending, forward tilting, backward tilting, left and right and lifting movement of the forklift;
3) Driving the rotary speed reducer to finely adjust the mounting hole of the upper flange of the air supply middle section branch pipe to an accurate position through the manual wheel of the chain transmission device and mounting the upper flange;
4) After the installation of the flange at the upper part of the air supply middle section branch pipe is finished, a hydraulic control system is started, the pressing claw is loosened through the hydraulic cylinder, the fork of the blast furnace air supply middle section replacement equipment is lowered to a state that the fork can leave, and the blast furnace site is opened.
The invention relates to an accurate position of a flange on an air supply middle branch pipe, which is that a fork provided with an air supply middle branch pipe dismounting device can move back and forth, left and right or up and down to find the accurate position of the flange mounting hole on the air supply middle branch pipe under the condition that a forklift wheel is not moved, and the mounting hole of the flange on the air supply middle branch pipe is finely adjusted to an aligned position by a manual wheel.
Further, under the condition that the forklift wheels are not moving, the fork provided with the air supply middle section branch pipe dismounting device can be tilted forwards and backwards, so that the upper flange of the air supply middle section branch pipe is in parallel contact with the mounting flange, or the air supply middle section branch pipe is safely supported on the V-shaped support.
According to the blast furnace air supply middle section replacement equipment and the replacement method thereof, through improvement on the existing forklift, the left and right lateral movement, forward tilting, backward tilting and other operation functions of the forklift are increased, a hydraulic control system and an air supply middle section branch pipe dismounting device connected with the forklift are arranged on the forklift, a plurality of hydraulic pipelines are connected with a plurality of hydraulic control valves and a plurality of manual hydraulic reversing valves to be connected with a plurality of hydraulic cylinders, and then a pressing claw connected with the plurality of hydraulic cylinders is used for pressing the lower flange of the blast furnace air supply middle section branch pipe, so that the flange on the blast furnace air supply middle section branch pipe is quickly dismounted and mounted, the overhaul time is greatly shortened, the overhaul efficiency is improved, the labor intensity of maintainers is lightened, and the overhaul safety construction is ensured. The invention is the most convenient and effective tool for realizing the quick replacement of the blast furnace air supply middle section, has good practicability and feasibility, and has good prospect of wide popularization and application.
Drawings
FIG. 1 is a schematic diagram of a front view structure assembly connection;
FIG. 2 is a schematic top view of a structural connection;
FIG. 3 is a right-view structural connection schematic;
fig. 4 is a schematic diagram of the structural connection of the chain drive.
The numbers in the figures indicate: a forklift 1; a hydraulic control system 2; a hydraulic control valve 3; a V-shaped bracket 4; a hydraulic reversing valve 5; a pressing claw 6; a hydraulic cylinder 7; a universal wheel assembly 8; a swing speed reducer 9; a lower tray 10; a chain transmission 11; a speed reducer chain 11-1; a speed reducer transmission shaft 11-2; sprocket chain 11-3; sprocket transmission shaft 11-4; an intermediate transmission shaft 11-5; a manual wheel 11-6; a fork 12; and a middle branch pipe 13 for supplying air.
Detailed Description
The invention will now be described in detail with reference to the drawings and an exemplary embodiment, in which preferred embodiments are shown. The dimensional and regional scope of the structures in the drawings may be exaggerated or exaggerated for clarity of illustration of the present invention, or some of the graphic structures are not shown in the case where the description is clear, but the preferred embodiments do not limit other implementations of the present invention.
Referring to fig. 1 to 2, the present invention is a new blast furnace blast middle section replacement apparatus comprising an improved counter-balanced forklift 1 and a blast middle section branch pipe dismounting device mounted on a forklift mast fork 12. The equipment is provided with a hydraulic control system 2 on the existing forklift 1 to start and operate the whole replacement equipment, and utilizes an engine on the forklift 1, a hydraulic pump connected with the hydraulic control system 2 at the output end of the engine provides hydraulic power for the forklift, and the equipment is improved and designed with the operation functions of left and right lateral movement, forward tilting, backward tilting and the like, so that the blast furnace air supply middle section replacement equipment can move left and right in a limited space, and the quick disassembly and installation of an air supply middle section branch pipe 13 can be quickly carried out. The blast furnace air supply middle section replacement equipment is flexible and convenient to operate in a limited working space. Thereby greatly shortening the maintenance time, improving the maintenance efficiency and simultaneously greatly reducing the labor intensity of maintenance personnel.
The V-shaped bracket 4 is a main support of the air supply middle branch pipe 13; the V-shaped bracket 4 is designed into an L-shaped vertical bracket and a horizontal tray, the upper part of the L-shaped vertical bracket is designed into a V-shaped opening structure, the V-shaped opening structure is used as an auxiliary support of the air supply middle branch pipe 13 when the air supply middle branch pipe 13 is disassembled and assembled, and the horizontal tray is used for supporting the components of the air supply middle branch pipe 13 and supporting the weight of the air supply middle branch pipe 13 so as to ensure the disassembly and assembly safety of the air supply middle branch pipe 13.
When the blast furnace air supply middle branch pipe 13 is disassembled, bolts are removed from the lower flange of the air supply middle branch pipe 13 on site, and the air supply middle branch pipe 13 is in an inclined and eccentric installation state on the blast furnace. Therefore, the blast furnace air supply middle section replacement equipment can be conveniently conveyed to the lower part of the lower flange of the blast furnace air supply middle section branch pipe, the V-shaped support 4 designed on the replacement equipment is used for supporting, and 3 pressing claws 6 which are uniformly arranged on the V-shaped support 4 are driven by 3 hydraulic cylinders 7 which are uniformly arranged to drive the lower flange of the air supply middle section branch pipe 13 to be tightly pressed, so that the disassembly of the upper flange of the air supply middle section branch pipe 13 can be completed and the flange can be conveyed out of a blast furnace site.
When the blast furnace air supply middle branch pipe 13 is installed, the blast furnace air supply middle branch pipe 13 is arranged on the replacement equipment, the auxiliary support and the whole component and weight support are carried out through the vertical support and the horizontal tray of the V- shaped support 4, 3 pressing claws 6 which are uniformly distributed and installed are driven by 3 hydraulic cylinders 7 which are arranged on the horizontal tray, the lower flange of the air supply middle branch pipe 13 is pressed, the blast furnace air supply middle branch pipe replacement equipment can be conveniently conveyed to the position below the upper flange of the blast furnace air supply middle branch pipe 13, the fork 12 provided with the air supply middle branch pipe dismounting device can ascend, descend, tilt forward, tilt backward and move left and right to find the accurate position of the flange installation hole of the air supply middle branch pipe 13, the rotary speed reducer 9 is driven by the manual wheel 11-6 to finely adjust the installation hole of the upper flange of the air supply middle branch pipe 13 to the alignment position, then the installation of the flange bolt of the upper flange of the air supply middle branch pipe 13 is carried out, and after the installation is completed, the lower flange of the air supply middle branch pipe 13 is loosened by the hydraulic system, and the pressing claw 6 is driven by the hydraulic system, and the blast furnace air supply middle branch pipe replacement equipment is opened out of the blast furnace middle section.
The hydraulic control system 2 is connected with a plurality of hydraulic cylinders 7 arranged on an air supply middle branch pipe dismounting device through a plurality of hydraulic pipelines, a plurality of hydraulic control valves 3 and a plurality of hydraulic reversing valves 5; and then the lower flange of the air supply middle branch pipe 13 to be disassembled is pressed by the pressing claws 6 connected with the hydraulic cylinders 7, so that the air supply middle branch pipe 13 is quickly disassembled or assembled.
Referring to fig. 1, 2 and 3, the air supply middle branch pipe dismounting device of the invention is arranged on the forks 12 of the forklift 1, the original parallel installation of the forks 12 is improved to be vertical installation, so as to increase the supporting strength of the forks 12, and the two forks 12 are provided with protective fork sleeves which are welded on the lower tray 10, and the lower tray 10 is provided with various components of the blast furnace air supply middle branch pipe dismounting device.
The dismounting device of the air supply middle branch pipe consists of a V-shaped bracket 4, a lower tray 10 and a chain transmission device 11; the V-shaped bracket 4 is connected to the chain transmission device 11, the chain transmission device 11 is fixedly arranged on the lower tray 10, a plurality of pressing claws 6 and a plurality of hydraulic cylinders 7 connected with the pressing claws 6 are arranged on the horizontal tray of the V- shaped bracket 4, and 3 pressing claws 6 and 3 hydraulic cylinders 7 connected with the pressing claws 6 are preferably arranged on the horizontal tray of the V-shaped bracket 4. The hydraulic control system 2 is connected to a main hydraulic pump on a forklift 1, is connected with a plurality of hydraulic control valves 3 and a plurality of manual hydraulic reversing valves 5 through a plurality of hydraulic pipelines according to the requirements, and is connected with 3 hydraulic cylinders 7 on an air supply middle branch pipe dismounting device so as to provide hydraulic power for the operation of the air supply middle branch pipe dismounting device.
When the hydraulic control system works, the fork 12 of the forklift 1 is driven by the hydraulic control system to integrally support the dismounting device of the middle section branch pipe of the blast furnace, the pressing claw 6 is pushed by the hydraulic cylinder 7 to overturn or move, so that the operation function of pressing the lower flange of the middle section branch pipe 13 of the blast furnace is realized, and the quick dismounting and transportation process of the middle section branch pipe 13 of the blast furnace is realized through the front-back, left-right movement, forward tilting and lifting functions of the forklift.
Referring to fig. 3 and 4, the dismounting device of the air supply middle branch pipe is designed and provided with a chain transmission device 11, the chain transmission device 11 comprises a rotary speed reducer 9, a V-shaped bracket 4 is arranged on the rotary speed reducer 9, and the V-shaped bracket 4 is a main support of the air supply middle branch pipe 13; the V-shaped bracket 4 is designed into an L-shaped vertical bracket and a horizontal tray, the upper part of the L-shaped vertical bracket is designed into a V-shaped opening structure, the V-shaped opening structure is used as an auxiliary support for the air supply middle branch pipe 13 when the air supply middle branch pipe 13 is disassembled and assembled, and the horizontal tray is a component support and a weight support for the air supply middle branch pipe 13.
A plurality of pin shaft seats for installing the pressing claws 6 and a plurality of hydraulic cylinder supports for installing the hydraulic cylinders 7 are arranged on the horizontal tray of the V-shaped bracket 4; the pressing claw 6 arranged in the pin shaft seat can turn over and move under the drive of the hydraulic cylinder 7, and the hydraulic cylinder 7 can stretch back and forth on the hydraulic cylinder support. The specific embodiment of the invention is that 3 uniformly-arranged pressing claws 6 and 3 uniformly-arranged hydraulic cylinders 7 connected with the pressing claws are arranged on a horizontal tray of a V-shaped bracket 4, and when the device works, the hydraulic cylinders 7 drive the pressing claws 6 to uniformly press on the lower flange of an air supply middle branch pipe 13, so that the air supply middle branch pipe 13 can be conveniently disassembled and assembled in a limited space.
The chain drive 11 of the present invention is provided on the pallet 10. The chain transmission device 11 is connected with the rotary speed reducer 9 through a speed reducer transmission shaft 11-2, one side of a speed reducer chain 11-1 is connected below the speed reducer transmission shaft 11-2, and the other side of the speed reducer chain 11-1 and one side of a chain wheel chain 11-3 are arranged in an up-down overlapping manner and connected to the middle transmission shaft 11-5; the other side of the chain wheel 11-3 is connected with one end of the chain wheel transmission shaft 11-4, and the other end of the chain wheel transmission shaft 11-4 is provided with a manual wheel 11-6. The driving of the rotary speed reducer 9 is completed by the manual wheel 11-6, the rotary speed reducer 9, the V-shaped bracket 4 arranged on the rotary speed reducer 9 and the horizontal tray thereof can be subjected to fine adjustment through the manual wheel 11-6, and the supported blast furnace air supply middle branch pipe 13 can be aligned with the bolt connecting hole of the upper flange through the fine adjustment and can be accurately positioned and arranged.
The speed reducer transmission shaft 11-2, the chain wheel transmission shaft 11-4 and the intermediate transmission shaft 11-5 in the chain transmission device 11 are respectively provided with a bearing seat and rotate in the respective bearing seats, and mechanical power is transmitted for the rotation of the rotary speed reducer 9 and the V-shaped bracket 4. The universal wheel assembly 8 is also designed and installed below the front end of the horizontal tray of the V-shaped bracket 4 so as to adjust the height error when the blast furnace air supply middle branch pipe 13 is disassembled and assembled and can conveniently guide transportation.
The V-shaped opening structure is designed above the vertical support of the V-shaped support 4, and the V-shaped opening structure is used as an auxiliary support for the air supply middle branch pipe 13 to move forwards or backwards, move left and right, incline forwards and backwards, lift and transport when the air supply middle branch pipe 13 of the blast furnace is disassembled and transported, so that the disassembly and transportation safety of the air supply middle branch pipe 13 is ensured.
According to the hydraulic control system 2, a plurality of hydraulic control valves 3 and a plurality of manual hydraulic reversing valves 5 can be connected with a plurality of hydraulic cylinders 7 according to requirements, the hydraulic cylinders 7 push the pressing claws 6 to press the lower flange of the blast furnace air supply middle branch pipe 13 onto the horizontal tray of the V-shaped bracket 4 through the plurality of hydraulic control valves 3 and the plurality of manual hydraulic reversing valves 5, so that the whole disassembly or the whole assembly can be realized, and the operation can be performed in a narrow space.
The blast furnace air supply middle section replacement equipment can realize the quick connection of the forklift and the blast furnace air supply middle section branch pipe dismounting device and the quick dismounting and transportation of the air supply middle section branch pipe 13.
The invention also provides a method for replacing the blast furnace air supply middle section designed by the blast furnace air supply middle section replacement equipment, and the operation of the replacement method is slightly different when the blast furnace air supply middle section is disassembled and assembled.
The operation of detaching the blast furnace air supply middle branch pipe 13 is as follows:
1) Running blast furnace air supply middle section replacement equipment provided with a blast furnace air supply middle section branch pipe dismounting device to the bottom of a blast furnace air supply middle section branch pipe needing to be replaced, taking a V-shaped bracket 4 of the replacement equipment and a horizontal tray thereof as the whole component, weight and auxiliary support of an air supply middle section branch pipe 13, moving a forklift 1 back and forth and left and right to enable the forklift to correspond to the position of the air supply middle section branch pipe 13, and finding the accurate position of a lower flange of the air supply middle section branch pipe 13;
2) The fork 12 of the forklift 1 integrally supports a blast furnace air supply middle branch pipe dismounting device connected with the tray 10 and rises to a lower flange at the bottom of an air supply middle branch pipe 13;
3) Starting the hydraulic control system 2, driving the pressing claw 6 to press and fix the lower flange of the air supply middle branch pipe 13 through the hydraulic cylinder 7 connected with the pressing claw 6, and detaching the upper flange of the air supply middle branch pipe 13 after the pressing is performed without moving a forklift;
4) After the upper flange of the air supply middle branch pipe 13 is disassembled, the hydraulic cylinder 7 pushes the pressing claw 6 to be always in a state of pressing the lower flange of the air supply middle branch pipe 13, the pallet fork 12 is lowered to a state of being capable of leaving, and the blast furnace site is opened.
The method for installing the blast furnace air supply middle branch pipe 13 comprises the following steps:
1) The blast furnace air supply middle section replacing device is provided with an air supply middle section branch pipe 13, and a hydraulic cylinder 7 is used for driving a pressing claw 6 to press a lower flange of the blast furnace air supply middle section branch pipe 13, so that the blast furnace air supply middle section replacing device is operated to the bottom of the blast furnace air supply middle section branch pipe 13 which needs to be replaced;
2) The air supply middle branch pipe dismounting device is integrally supported by a fork 12 on the forklift 1, so that the air supply middle branch pipe 13 is lifted to the joint of the upper flange, and the accurate position of the flange on the air supply middle branch pipe 13 is found by the front-back, left-right and lifting movement of the forklift 1;
3) The mounting holes of the upper flange of the air supply middle branch pipe 13 are finely adjusted to the accurate positions through the manual wheel 11-6, and the upper flange is mounted;
4) After the upper flange is installed, the pressing claw 6 is loosened through the hydraulic cylinder 7, the fork 12 of the blast furnace air supply middle section replacement equipment is lowered to a state that the fork can leave, and the blast furnace site is opened.
The invention aims at the accurate position of the flange on the air supply middle branch pipe 13, and the fork 12 provided with the air supply middle branch pipe dismounting device can move forwards and backwards, leftwards and rightwards or up-and-down under the condition that the forklift wheel is not moving, so as to aim at the accurate position of the flange mounting hole on the air supply middle branch pipe 13, and meanwhile, the mounting hole of the flange on the air supply middle branch pipe 13 is finely adjusted to an alignment position through the manual wheel 11-6, and under the condition that the forklift wheel is not moving, the fork 12 can also tilt forwards and backwards, so that the upper flange of the air supply middle branch pipe 13 is in parallel contact with the mounting flange, or the air supply middle branch pipe 13 is safely supported on the vertical V-shaped bracket 4.
By the replacement equipment and the replacement method, the whole air supply middle section branch pipe can be easily assembled and disassembled in place at one time, compared with the manual and guide chain hoisting assembly and disassembly adopted in the prior generation, the rapid assembly and disassembly and transportation of the blast furnace air supply middle section equipment are realized, the labor intensity of workers is greatly reduced, and the working efficiency is improved. Meanwhile, the safety index of field work is improved, and the pollution of overhaul to the environment is reduced. The overhauling time of the blast furnace is effectively shortened.
Example 1
The present embodiment performs disassembly of the air supply middle branch pipe 13.
As shown in fig. 1 to 4, the blast furnace air supply middle section replacement apparatus includes a counterweight type forklift 1, a hydraulic control system 2, a hydraulic control valve 3, a V-shaped bracket 4, a hydraulic reversing valve 5, a pressing claw 6, a hydraulic cylinder 7, a universal wheel assembly 8, a swing speed reducer 9, a lower pallet 10, a chain drive 11, a speed reducer chain 11-1, a speed reducer drive shaft 11-2, a sprocket chain 11-3, a sprocket drive shaft 11-4, an intermediate drive shaft 11-5, a manual wheel 11-6, a fork 12, and an air supply middle section branch pipe 13.
The blast furnace air supply middle section replacing equipment is operated to the bottom of a blast furnace air supply middle section branch pipe which needs to be replaced, the forklift 1 moves back and forth and left and right to enable the forklift to correspond to the position of the air supply middle section branch pipe 13, and the accurate position of the lower flange of the air supply middle section branch pipe 13 is found; the fork 12 of the forklift 1 integrally supports the dismounting device of the blast furnace air supply middle branch pipe, and rises to the lower flange at the bottom of the air supply middle branch pipe 13; the hydraulic cylinder 7 drives the pressing claw 6 to press and fix the lower flange of the air supply middle branch pipe 13, so as to detach the upper flange of the air supply middle branch pipe 13; after the disassembly is completed, the hydraulic cylinder 7 pushes the pressing claw 6 to be always positioned on the lower flange of the compressed air supply middle branch pipe 13, then the fork 12 is lowered to a state that the fork can leave, and the blast furnace site is opened.
The hydraulic control system 2 is connected to the output end of the engine of the balanced forklift 1, and the main hydraulic pump is connected with the multi-path hydraulic control valve 3 and the multi-path manual hydraulic reversing valve 5 through a multi-path hydraulic pipeline and is connected with the hydraulic cylinder 7 through a hydraulic pipeline to provide hydraulic power for the whole hydraulic control system 2. The present embodiment is provided with 3 hydraulic cylinders 7 and 3 pressing claws 6, and therefore, the number of hydraulic lines and hydraulic control valves, and manual hydraulic directional valves are conventionally set and selected according to the needs of the 3 hydraulic cylinders 7 and 3 pressing claws 6.
Example 2
The present embodiment performs the installation of the air supply middle branch pipe 13.
The blast furnace air supply middle section replacement equipment is provided with a blast furnace air supply middle section branch pipe 13, a hydraulic cylinder 7 is used for driving a pressing claw 6 to press a lower flange of the blast furnace air supply middle section branch pipe 13, the blast furnace air supply middle section replacement equipment is operated to the bottom of the blast furnace air supply middle section branch pipe 13 which needs to be replaced, a fork 12 on a forklift 1 is used for integrally supporting an air supply middle section branch pipe dismounting device, the air supply middle section branch pipe 13 is lifted to a joint of an upper flange, the accurate position of the upper flange of the air supply middle section branch pipe 13 is found through the movement of the forklift 1, then a bolt mounting hole of the upper flange of the air supply middle section branch pipe 13 is finely adjusted to an aligned position through a manual wheel 11-6, and the upper flange bolt is mounted; after the installation is completed, the pressing claw 6 is loosened, the fork 12 of the replacement equipment is lowered to a separated state, and the blast furnace site is opened.
In the embodiment, when the forklift is installed, the fork 12 is moved left and right, forwards inclined and backwards inclined under the condition that the forklift wheels are not moved, so that the upper flange of the air supply middle branch pipe 13 and the installation flange can be in parallel contact, and the upper flange and the installation flange are finely adjusted to be aligned up and down through bolt holes of the flanges, so that the installation is smoothly performed.
The above-described embodiments of the present invention are merely exemplary, and various modifications to the embodiments without departing from the design principles of the present invention are to be considered within the scope of the present invention.
Claims (13)
1. The blast furnace air supply middle section replacement equipment comprises a forklift and an operation function thereof; the hydraulic control system is characterized by comprising an air supply middle branch pipe dismounting device arranged on the forklift and a hydraulic control system arranged on the forklift, wherein the forklift is designed with left and right lateral movement and forward tilting and backward tilting operation functions;
the dismounting device of the air supply middle branch pipe consists of a V-shaped bracket, a lower tray and a chain transmission device; the V-shaped bracket is arranged on the chain transmission device, the chain transmission device is arranged on a lower tray, the lower tray is arranged on a fork of a forklift, and the V-shaped bracket is provided with a plurality of pressing claws and a plurality of hydraulic cylinders connected with the pressing claws;
the hydraulic control system is connected with a plurality of hydraulic control valves and a plurality of manual hydraulic reversing valves through a plurality of hydraulic pipelines by a hydraulic pump arranged on the forklift and is connected with a plurality of hydraulic cylinders on the air supply middle branch pipe dismounting device so as to provide hydraulic power for the air supply middle branch pipe dismounting device;
the hydraulic control system drives the fork of the forklift to integrally support the dismounting device of the air supply middle section branch pipe, the pressing claw is pushed by the hydraulic cylinder to overturn or move, so that the operation function of pressing the lower flange of the air supply middle section branch pipe is realized, and the hydraulic control system moves back and forth, tilts forward and backward and lifts the hydraulic control system through the forklift, so that the quick dismounting and transportation process of the air supply middle section branch pipe is realized.
2. The replacement apparatus according to claim 1, wherein a plurality of pin bosses on which the pressing claws are mounted and a plurality of cylinder holders on which the hydraulic cylinders are mounted are provided on the V-shaped bracket, the pressing claws being tiltable or movable in the pin bosses thereof, the hydraulic cylinders being retractable back and forth on the cylinder holders thereof.
3. The replacement device according to claim 2, wherein the V-shaped bracket is provided with 3 distributed pressure claws and 3 distributed hydraulic cylinders connected with the pressure claws, and the pressure claws are driven to press the lower flange of the air supply middle branch pipe, so that the air supply middle branch pipe can be conveniently disassembled and assembled in a limited space.
4. A replacement apparatus according to claim 3, wherein the V-bracket is the primary support for the supply air midsection branch; the V-shaped bracket is designed into an L-shaped vertical bracket and a horizontal tray, the upper part of the L-shaped vertical bracket is designed into a V-shaped opening structure, the V-shaped bracket is used as an auxiliary support of an air supply middle section branch pipe when the air supply middle section branch pipe is disassembled and assembled, and the horizontal tray is used for supporting and supporting the components of the air supply middle section branch pipe and the weight of the air supply middle section branch pipe so as to ensure the disassembly and assembly safety of the air supply middle section branch pipe.
5. The replacement apparatus according to claim 1, wherein the chain transmission device includes a swing speed reducer, the V-bracket being provided on the swing speed reducer; the chain transmission device is provided with a speed reducer transmission shaft connected with a speed reducer chain, a sprocket transmission shaft connected with a sprocket chain and an intermediate transmission shaft connected with the speed reducer chain and the two chains of the sprocket chain; the speed reducer chain and the chain wheel chain are vertically overlapped and mounted on the middle transmission shaft, a manual wheel is mounted at one end of the chain wheel transmission shaft, and the rotation of the rotary speed reducer and the V-shaped support is subjected to fine adjustment through the manual wheel.
6. The exchange device according to claim 5, wherein the speed reducer drive shaft, the sprocket drive shaft and the intermediate drive shaft in the chain drive are each provided with and rotate in their respective bearing seats, transmitting mechanical power for the rotation of the slewing speed reducer and the vertical V-bracket and its horizontal pallet.
7. The replacement apparatus according to any one of claims 3 to 5, wherein a universal wheel assembly is further provided below the front end of the V-shaped bracket to adjust a height error at the time of disassembly and assembly of the branch pipe in the middle of air supply and to facilitate guiding in and out of the replacement apparatus.
8. The changing apparatus of claim 1, wherein the forks of the forklift are vertically mounted and fork pockets are mounted on both forks, the fork pockets being welded to the pallet.
9. The replacement apparatus according to claim 1, wherein a hydraulic pump of the hydraulic control system is connected to an engine output of the forklift and supplies power to the hydraulic control system; the forklift and the air supply middle section branch pipe dismounting device can be connected quickly, and the air supply middle section branch pipe can be dismounted and transported quickly.
10. A blast furnace blast midsection replacement method according to claims 1-9, characterized in that the method of disassembling the blast furnace blast midsection branch pipes comprises:
1) The V-shaped bracket of the blast furnace air supply middle section replacement equipment is used as a support and an auxiliary support for the whole weight of the air supply middle section branch pipe, and the accurate position of the lower flange of the air supply middle section branch pipe is found through the ascending, descending, forward tilting, backward tilting and left-right movement of a forklift;
2) The whole air supply middle section branch pipe dismounting device connected with the tray is lifted up through a fork of the forklift and rises to a lower flange at the bottom of the air supply middle section branch pipe;
3) Starting a hydraulic control system, driving a pressing claw to press a lower flange of the air supply middle branch pipe through a hydraulic cylinder connected with the pressing claw, and detaching an upper flange of the air supply middle branch pipe after the pressing claw is pressed without moving a forklift;
4) After the upper flange of the air supply middle section branch pipe is detached, the hydraulic cylinder pushes the pressing claw to be always in a state of pressing the lower flange of the air supply middle section branch pipe, and the fork of the blast furnace air supply middle section replacement equipment descends to a state capable of leaving and is opened out of a blast furnace site.
11. The method of exchanging of claim 10, wherein the method of installing the blast furnace blast midsection manifold comprises:
1) The blast furnace air supply middle section replacing equipment is provided with the air supply middle section branch pipe supported by the V-shaped support, and the hydraulic cylinder connected with the pressing claw drives the pressing claw to press the lower flange of the air supply middle section branch pipe, so that the blast furnace air supply middle section replacing equipment is operated to the bottom of the blast furnace air supply middle section branch pipe needing to be replaced;
2) The fork on the forklift of the blast furnace air supply middle section replacement equipment integrally supports the air supply middle section branch pipe dismounting device, so that the air supply middle section branch pipe is lifted to the joint of the flanges at the upper parts of the air supply middle section branch pipes, and the accurate positions of the flanges on the air supply middle section branch pipes are found through lifting, descending, forward tilting, backward tilting, left and right and lifting movement of the forklift;
3) Driving the rotary speed reducer to finely adjust the mounting hole of the upper flange of the air supply middle section branch pipe to an accurate position through the manual wheel of the chain transmission device and mounting the upper flange;
4) After the installation of the flange at the upper part of the air supply middle section branch pipe is finished, a hydraulic control system is started, the pressing claw is loosened through the hydraulic cylinder, the fork of the blast furnace air supply middle section replacement equipment is lowered to a state that the fork can leave, and the blast furnace site is opened.
12. The replacement method according to claim 10 or 11, wherein the locating the accurate position of the flange on the air supply middle branch pipe means that the fork equipped with the air supply middle branch pipe dismounting device can move back and forth, left and right or up and down to locate the accurate position of the flange mounting hole on the air supply middle branch pipe under the condition that the forklift wheel is not moving, and the mounting hole of the flange on the air supply middle branch pipe is finely adjusted to the aligned position by the manual wheel.
13. The replacement method according to claim 12, wherein the fork equipped with the blast midsection branch pipe attaching/detaching device is also capable of tilting forward and backward with the forklift wheel stationary, so that the upper flange of the blast midsection branch pipe is brought into parallel contact with the mounting flange, or so that the blast midsection branch pipe is safely supported on the V-shaped bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310029199.XA CN116022699A (en) | 2023-01-09 | 2023-01-09 | Blast furnace air supply middle section replacement equipment and replacement method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310029199.XA CN116022699A (en) | 2023-01-09 | 2023-01-09 | Blast furnace air supply middle section replacement equipment and replacement method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116022699A true CN116022699A (en) | 2023-04-28 |
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ID=86090961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310029199.XA Pending CN116022699A (en) | 2023-01-09 | 2023-01-09 | Blast furnace air supply middle section replacement equipment and replacement method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116022699A (en) |
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2023
- 2023-01-09 CN CN202310029199.XA patent/CN116022699A/en active Pending
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