CN110982974B - Dismounting device and dismounting method of connecting pin shaft for distribution chute of blast furnace - Google Patents
Dismounting device and dismounting method of connecting pin shaft for distribution chute of blast furnace Download PDFInfo
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- CN110982974B CN110982974B CN201911053696.3A CN201911053696A CN110982974B CN 110982974 B CN110982974 B CN 110982974B CN 201911053696 A CN201911053696 A CN 201911053696A CN 110982974 B CN110982974 B CN 110982974B
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- pull rod
- connecting pin
- flange
- pull
- rod
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/18—Bell-and-hopper arrangements
- C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden
Abstract
The invention provides a dismounting device and a dismounting method of a connecting pin shaft for a distribution chute of a blast furnace, wherein the dismounting device comprises: the connecting screw comprises a threaded rod section and a screw flange, wherein the threaded rod section is in threaded fit with the connecting pin shaft; the pull rod is provided with a first end and a second end in the length direction, the first end of the pull rod is provided with a pull rod flange detachably connected with the screw rod flange, and the second end of the pull rod is provided with a pull ring; the sliding hammer is sleeved on the pull rod in a sliding manner, and two pull ropes are symmetrically arranged on two opposite sides of the sliding hammer; and the blocking seat is matched with the traveling hammer in a collision way and is fixedly arranged on the rod section of the pull rod close to the pull ring. The invention can not only greatly reduce the time for overhauling the connecting pin shaft, but also improve the safety for disassembling the connecting pin shaft.
Description
Technical Field
The invention relates to a blast furnace maintenance device, in particular to a dismounting device and a dismounting method of a connecting pin shaft for a distribution chute of a blast furnace.
Background
The blast furnace distributing chute is used as key equipment of a blast furnace top distributing system, and has the functions of uniformly distributing materials in the blast furnace, fully generating combustion reaction and improving the utilization rate of ore and coal resources. Because the blast furnace need incessantly carry out the unloading during production, repeatedly erode the blast furnace distribution chute for a long time, cause the wearing and tearing of blast furnace distribution chute different degree, need change blast furnace distribution chute. In the process of replacing a blast furnace distribution chute, the removal of a connecting pin shaft plays a decisive role, and in the process of difficult removal of the connecting pin shaft in the past, firstly, a production matching descending line is needed, and the flame in the furnace is extinguished to reduce the temperature to below 30 ℃, and the process needs more than 2 hours; secondly, manufacturing a special portal frame according to the size in advance, wherein 4 workers are needed in the process; thirdly, a working platform is erected on site, and 4 persons are required to work for 2 hours at the same time; fourthly, the coal defense station professional is required to detect and confirm, the constructor wears an air respirator to enter the interior in the whole process, the portal frame is used for hydraulic jack to demolish, the demolishing construction consumption time of one connecting pin shaft reaches more than 6 hours, the constructor must wear a safety belt to operate, the constructor is in an extremely dangerous environment, the replacement efficiency of the material distribution chute of the blast furnace is greatly reduced, and huge pressure is brought to the timely air supply of the blast furnace. Therefore, a new tool and a new operation method for dismantling the material distribution chute of the blast furnace are needed.
Disclosure of Invention
In view of the above disadvantages of the prior art, the technical problem to be solved by the present invention is to provide a device and a method for removing a connecting pin shaft for a distribution chute of a blast furnace, which can prevent workers from entering the inside of the blast furnace, reduce the labor load of the workers, reduce the operational risk of the workers, greatly reduce the time for overhauling the connecting pin shaft, and improve the safety for removing the connecting pin shaft.
In order to solve the technical problem, the invention provides a device for removing a connecting pin shaft for a material distribution chute of a blast furnace, which comprises:
the connecting screw comprises a threaded rod section and a screw flange, wherein the threaded rod section is in threaded fit with the connecting pin shaft;
the pull rod is provided with a first end and a second end in the length direction, the first end of the pull rod is provided with a pull rod flange detachably connected with the screw rod flange, and the second end of the pull rod is provided with a pull ring;
the sliding hammer is sleeved on the pull rod in a sliding manner, and two pull ropes are symmetrically arranged on two opposite sides of the sliding hammer;
and the blocking seat is matched with the traveling hammer in a collision way and is fixedly arranged on the rod section of the pull rod close to the pull ring.
Preferably, the slide hammer comprises a slide pipe sleeved on the pull rod, two collision discs are symmetrically arranged at two ends of the slide pipe, two connecting rods are arranged between the two collision discs, and the two connecting rods are symmetrically distributed by taking the pull rod as a center.
Preferably, the baffle seat comprises a baffle disc fixedly arranged on the pull rod, and a plurality of reinforcing plates are arranged between the baffle disc and the pull rod.
Preferably, all the reinforcing plates are uniformly distributed around the pull rod.
Preferably, the number of the reinforcing plates is four.
Preferably, the screw flange is provided with a plurality of first connecting holes, the pull rod flange is provided with a plurality of second connecting holes corresponding to the first connecting holes one to one, and the screw flange and the pull rod flange are connected together through bolt assemblies penetrating through the first connecting holes and the second connecting holes.
Preferably, the pulling rope is a hemp rope.
The invention also provides a method for dismounting the device by adopting the connecting pin shaft for the blast furnace distribution chute, which comprises the following steps:
step S1, screwing the threaded rod section of the connecting screw into the connecting hole of the connecting pin shaft;
step S2, pulling up the pull ring by using a lifting rope and aligning the pull rod flange of the pull rod with the screw rod flange of the connecting screw rod so that the axis of the pull rod and the axis of the threaded rod section are positioned on the same straight line;
step S3, connecting the pull rod flange to the screw rod flange;
and step S4, pulling the two pulling ropes respectively by two workers to enable the traveling hammers to collide with the blocking seats so as to remove the connecting pin shaft from the blast furnace.
As mentioned above, the dismounting device and the dismounting method of the connecting pin shaft for the blast furnace distribution chute have the following beneficial effects: in the invention, when the connecting pin shaft for mounting the blast furnace distribution chute needs to be removed, firstly, the threaded rod section of the connecting screw is screwed into the connecting hole of the connecting pin shaft; then, connecting a pull rod flange of the pull rod with a screw rod flange of the connecting screw rod, and enabling the axis of the pull rod and the axis of the threaded rod section to be positioned on the same straight line; then, two workers are respectively positioned at two sides of the pull rod and respectively hold a traction rope; finally, two workers pull the pulling rope simultaneously to enable the traveling hammer to collide to the blocking seat so as to detach the connecting pin shaft from the blast furnace. Therefore, the dismounting device of the connecting pin shaft for the distribution chute of the blast furnace can prevent workers from entering the blast furnace, reduce the labor load of the workers, reduce the operation risk of the workers, greatly reduce the time for overhauling the connecting pin shaft and improve the safety for dismounting the connecting pin shaft.
Drawings
FIG. 1 is a perspective view of a removal device for a connecting pin for a distribution chute of a blast furnace according to the present invention;
fig. 2 shows a front view of the dismounting device of the connecting pin for the distribution chute of the blast furnace according to the invention.
Description of the element reference numerals
1 connecting screw
11 screw-threaded rod section
12 screw flange
2 draw bar
21 draw-bar flange
22 pull ring
3 trip hammer
31 pulling rope
32 sliding tube
33 impact disc
34 connecting rod
4 keep off seat
41 baffle disc
42 reinforcing plate
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions that the present disclosure can be implemented, so that the present disclosure is not limited to the technical essence, and any structural modifications, ratio changes, or size adjustments should still fall within the scope of the present disclosure without affecting the efficacy and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
The blast furnace distribution chute needs to be arranged at the top of the blast furnace through a connecting pin shaft. As shown in fig. 1 and 2, the invention provides a device for removing a connecting pin shaft for a distribution chute of a blast furnace, which comprises:
the connecting screw rod 1 is connected, and the connecting screw rod 1 comprises a threaded rod section 11 and a screw rod flange 12 which are in threaded fit with the connecting pin shaft;
the screw rod flange 12 is detachably connected with the pull rod 2, and the pull rod 2 is provided with a first end and a second end in the length direction;
the traveling hammer 3 is sleeved on the pull rod 2 in a sliding manner, and two traction ropes 31 are symmetrically arranged on two opposite sides of the traveling hammer 3;
and the blocking seat 4 is matched with the traveling hammer 3 in a collision way, and the blocking seat 4 is fixedly arranged on the rod section of the pull rod 2 close to the pull ring 22.
In the invention, when a connecting pin shaft for mounting a blast furnace distribution chute needs to be removed, firstly, a threaded rod section 11 of a connecting screw rod 1 is screwed into a connecting hole of the connecting pin shaft; then, connecting the pull rod flange 21 of the pull rod 2 with the screw rod flange 12 of the connecting screw rod 1, and enabling the axis of the pull rod 2 and the axis of the threaded rod section 11 to be located on the same straight line; then, two workers are respectively positioned at two sides of the pull rod 2 and respectively hold one traction rope 31; finally, two workers pull the pulling rope 31 at the same time, so that the traveling hammer 3 hits the stopper 4 to remove the connecting pin shaft from the blast furnace. Therefore, the dismounting device of the connecting pin shaft for the distribution chute of the blast furnace can prevent workers from entering the blast furnace, reduce the labor load of the workers, reduce the operation risk of the workers, greatly reduce the time for overhauling the connecting pin shaft and improve the safety for dismounting the connecting pin shaft.
In order to simplify the structure of the traveling hammer 3, the traveling hammer 3 includes a sliding tube 32 sleeved on the pull rod 2, two collision discs 33 are symmetrically arranged at two ends of the sliding tube 32, two connecting rods 34 are arranged between the two collision discs 33, and the two connecting rods 34 are symmetrically distributed with the pull rod 2 as a center. Further, the pulling rope 31 is tied to the connecting rod 34.
In order to improve the impact resistance of the retainer 4, the retainer 4 includes a retainer disc 41 fixed to the pull rod 2, and a plurality of reinforcing plates 42 are provided between the retainer disc 41 and the pull rod 2. Furthermore, all the reinforcing plates 42 are uniformly distributed around the pull rod 2. Further, the number of the reinforcing plates 42 is four.
The screw flange 12 is provided with a plurality of first connection holes, the tie rod flange 21 is provided with a plurality of second connection holes corresponding to the first connection holes one to one, and the screw flange 12 and the tie rod flange 21 are connected together by bolt assemblies penetrating through the first connection holes and the second connection holes.
In order to reduce the manufacturing cost, the pulling rope 31 is a hemp rope.
The invention also provides a method for dismounting the connecting pin shaft dismounting device for the blast furnace distribution chute, which comprises the following steps:
step S1, screwing the threaded rod section 11 of the connecting screw rod 1 into the connecting hole of the connecting pin shaft;
step S2, pulling up the pull ring 22 by using a lifting rope and aligning the pull rod flange 21 of the pull rod 2 with the screw rod flange 12 of the connecting screw rod 1, so that the axis of the pull rod 2 and the axis of the threaded rod section 11 are positioned on the same straight line;
step S3, connecting the tie rod flange 21 to the screw flange 12;
in step S4, two workers pull the two pulling ropes 31 respectively to make the traveling hammers 3 collide against the stopper base 4, so as to remove the connecting pin shaft from the blast furnace.
The dismounting method provided by the invention can greatly reduce the time for overhauling the connecting pin shaft and improve the safety for dismounting the connecting pin shaft.
In conclusion, the dismounting device and the dismounting method for the connecting pin shaft for the material distribution chute of the blast furnace can prevent workers from entering the blast furnace, reduce the labor load of the workers, reduce the operation risk of the workers, greatly reduce the time for overhauling the connecting pin shaft and improve the safety for dismounting the connecting pin shaft. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (5)
1. A method for dismounting a device for dismounting a connecting pin shaft for a blast furnace distribution chute is characterized by comprising the following steps:
the connecting screw (1), the connecting screw (1) includes the threaded rod section (11) and screw flange (12) that cooperate with connecting pin shaft whorl;
the screw rod structure comprises a pull rod (2), wherein the pull rod (2) is provided with a first end and a second end in the length direction, the first end of the pull rod (2) is provided with a pull rod flange (21) detachably connected with a screw rod flange (12), and the second end of the pull rod (2) is provided with a pull ring (22);
the sliding hammer (3) is sleeved on the pull rod (2) in a sliding manner, and two traction ropes (31) are symmetrically arranged on two opposite sides of the sliding hammer (3); the traveling hammer (3) comprises a sliding pipe (32) sleeved on the pull rod (2), two collision discs (33) are symmetrically arranged at two ends of the sliding pipe (32), two connecting rods (34) are arranged between the two collision discs (33), and the two connecting rods (34) are symmetrically distributed by taking the pull rod (2) as a center;
the stop seat (4) is matched with the traveling hammer (3) in a collision way, and the stop seat (4) is fixedly arranged on the rod section of the pull rod (2) close to the pull ring (22);
the screw flange (12) is provided with a plurality of first connecting holes, the pull rod flange (21) is provided with a plurality of second connecting holes corresponding to the first connecting holes one to one, and meanwhile, the screw flange (12) and the pull rod flange (21) are connected together through bolt assemblies penetrating through the first connecting holes and the second connecting holes;
the dismantling method comprises the following steps:
step S1, screwing the threaded rod section (11) of the connecting screw rod (1) into the connecting hole of the connecting pin shaft;
step S2, using a lifting rope to pull the pull ring (22) and align the pull rod flange (21) of the pull rod (2) with the screw rod flange (12) of the connecting screw rod (1), so that the axis of the pull rod (2) and the axis of the threaded rod section (11) are positioned on the same straight line;
step S3, connecting the pull rod flange (21) to the screw rod flange (12);
and step S4, two workers respectively pull the two pulling ropes (31) to enable the traveling hammers (3) to collide against the blocking seats (4) so as to detach the connecting pin shaft from the blast furnace.
2. The method for dismounting a connecting pin dismounting device for a blast furnace distribution chute as recited in claim 1, wherein: the blocking seat (4) comprises a blocking disc (41) fixedly arranged on the pull rod (2), and a plurality of reinforcing plates (42) are arranged between the blocking disc (41) and the pull rod (2).
3. The method for dismounting a connecting pin dismounting device for a blast furnace distribution chute as recited in claim 2, characterized in that: all the reinforcing plates (42) are uniformly distributed around the pull rod (2).
4. The method for dismounting a connecting pin dismounting device for a blast furnace distribution chute as recited in claim 3, characterized in that: the number of the reinforcing plates (42) is four.
5. The method for dismounting a connecting pin dismounting device for a blast furnace distribution chute as recited in claim 1, wherein: the pulling rope (31) is a hemp rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911053696.3A CN110982974B (en) | 2019-10-31 | 2019-10-31 | Dismounting device and dismounting method of connecting pin shaft for distribution chute of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911053696.3A CN110982974B (en) | 2019-10-31 | 2019-10-31 | Dismounting device and dismounting method of connecting pin shaft for distribution chute of blast furnace |
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| Publication Number | Publication Date |
|---|---|
| CN110982974A CN110982974A (en) | 2020-04-10 |
| CN110982974B true CN110982974B (en) | 2021-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911053696.3A Active CN110982974B (en) | 2019-10-31 | 2019-10-31 | Dismounting device and dismounting method of connecting pin shaft for distribution chute of blast furnace |
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| CN (1) | CN110982974B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202124637U (en) * | 2011-06-08 | 2012-01-25 | 河北省首钢迁安钢铁有限责任公司 | Sliding hammer for poking port of blast furnace |
| CN104416529A (en) * | 2013-08-21 | 2015-03-18 | 襄阳职业技术学院 | Positioning pin removing device for mechanical pin shaft |
| CN205501339U (en) * | 2016-03-14 | 2016-08-24 | 宝山钢铁股份有限公司 | Wind gap bush dismounting device |
| CN205928479U (en) * | 2016-08-26 | 2017-02-08 | 唐山钢铁集团有限责任公司 | Dismantle blast furnace top material and flow instrument of adjusting valve oil jar round pin axle |
-
2019
- 2019-10-31 CN CN201911053696.3A patent/CN110982974B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202124637U (en) * | 2011-06-08 | 2012-01-25 | 河北省首钢迁安钢铁有限责任公司 | Sliding hammer for poking port of blast furnace |
| CN104416529A (en) * | 2013-08-21 | 2015-03-18 | 襄阳职业技术学院 | Positioning pin removing device for mechanical pin shaft |
| CN205501339U (en) * | 2016-03-14 | 2016-08-24 | 宝山钢铁股份有限公司 | Wind gap bush dismounting device |
| CN205928479U (en) * | 2016-08-26 | 2017-02-08 | 唐山钢铁集团有限责任公司 | Dismantle blast furnace top material and flow instrument of adjusting valve oil jar round pin axle |
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| Publication number | Publication date |
|---|---|
| CN110982974A (en) | 2020-04-10 |
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