CN110682074A - Frock is unloaded to hot rolling line edger roll AWC pneumatic cylinder - Google Patents
Frock is unloaded to hot rolling line edger roll AWC pneumatic cylinder Download PDFInfo
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- CN110682074A CN110682074A CN201910978450.0A CN201910978450A CN110682074A CN 110682074 A CN110682074 A CN 110682074A CN 201910978450 A CN201910978450 A CN 201910978450A CN 110682074 A CN110682074 A CN 110682074A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
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Abstract
The invention provides a hot rolling line vertical roll AWC hydraulic cylinder dismounting tool which comprises two sliding rails distributed along the outer surface of a rolling mill housing, wherein each sliding rail is provided with a slideway, each slideway is provided with at least two pulley assemblies, and the pulley assemblies can slide along the extension direction of the slideways under the action of external tension so as to pull the AWC hydraulic cylinder; the front end part of the slide rail, which is far away from the AWC hydraulic cylinder, is provided with a first chain block used for pulling the pulley assembly. During maintenance operation, the front side sliding wheel assembly is pulled by the first hand hoist, the rear side sliding wheel assembly is driven to move, the AWC hydraulic cylinder is pulled out of the influence position of the mill housing, and finally the AWC hydraulic cylinder is lifted away by the traveling crane. The AWC hydraulic cylinder dismounting tool for the hot rolling line vertical roll does not need to be stopped for maintenance, the maintenance time is shortened, the maintenance efficiency is improved, and the production cost is saved.
Description
Technical Field
The invention relates to the technical field of maintenance of rough rolling edger mills, in particular to an AWC hydraulic cylinder dismounting tool for a hot rolling line edger roll.
Background
The hot rolling line usually adopts the production technology that two roughing mills roll the slab, and the front end of each roughing mill is provided with a vertical rolling mill, and each vertical rolling mill is provided with an upper and a lower (totally four) groups of AWC hydraulic side pressure lower cylinders, so that the short stroke control function is realized. Because the AWC cylinder is arranged in the frame, the construction position is relatively narrow, after the AWC cylinder is required to be ejected out by a special ejection device when being replaced, a plurality of chain blocks are used for alternately transporting the cylinder out of the frame, the lifting points of the chain blocks need to be welded in advance, the AWC cylinder is not smooth to transport due to the nonstandard lifting point position, the number of operators is large, and the labor intensity of workers and the construction cost are increased.
How to improve the work efficiency of the AWC hydraulic cylinder of the vertical rod rolling mill and reduce the construction time is a technical problem which needs to be solved urgently by technical personnel in the field.
Disclosure of Invention
The invention aims to provide a dismounting tool for an AWC hydraulic cylinder of a hot rolling line vertical roll, which can quickly move out of a frame of the AWC hydraulic cylinder, save dismounting time for operators to move a chain block back and forth to search for a proper lifting point, reduce labor intensity of constructors and improve replacement efficiency.
The invention provides a hot rolling line vertical roll AWC hydraulic cylinder dismounting tool which comprises two sliding rails distributed along the lower surface of a rolling mill housing, wherein each sliding rail is provided with a slideway, each slideway is provided with at least two pulley assemblies, and the pulley assemblies can slide along the extension direction of the slideways under the action of external tension so as to pull the AWC hydraulic cylinder; two first hand-operated hoists are respectively installed at the front end parts of the two slide rails, which are far away from the AWC hydraulic cylinder, and are used for respectively pulling and locating the two front pulley assemblies.
Preferably, the stress gravity center intersection points of the pulley assemblies distributed in different slideways are positioned on the central vertical plane of the AWC hydraulic cylinder.
Preferably, the slide rail comprises an i-shaped steel and a plurality of wedge-shaped cushion blocks for fixedly mounting the i-shaped steel on the mill housing.
Preferably, the I-shaped steel is connected with the wedge-shaped cushion block in a welding mode, and the wedge-shaped cushion block is detachably connected with the mill housing through bolts.
Preferably, the pulley assembly comprises two pulleys which are respectively arranged inside two slideways of the I-shaped steel, a first screw rod is arranged at the center of each pulley in a penetrating manner, a baffle plate arranged outside each pulley, and a first locking nut used for locking the first screw rod towards the direction of the baffle plate; the novel anti-theft device is characterized by further comprising second screw rods penetrating through the two baffle plates and mounted at the bottoms of the baffle plates, second locking nuts used for locking the second screw rods, U-shaped connecting pieces mounted on the second screw rods, and second hand-pulled hoists mounted on the U-shaped connecting pieces in a hanging mode.
Preferably, the front end portion is provided with a first stopper for preventing the pulley assembly from slipping out of the slideway.
Preferably, the sliding device further comprises a second stopper mounted at the rear end of the sliding rail for preventing the pulley assembly from slipping.
Preferably, the front end portion and/or the rear end portion are respectively provided with a pair of holes, the first stopper and the second stopper are specifically a third screw rod and a third lock nut, the third screw rod penetrates through the pair of holes, and the third lock nut is used for fastening the third screw rod.
Compared with the prior art, the AWC hydraulic cylinder dismounting tool for the vertical roll of the hot rolling line is characterized in that two sliding rails are mounted at the top of a rolling mill housing at the extraction position of the AWC hydraulic cylinder, each sliding rail is provided with a sliding way, at least two pulley assemblies are arranged along the extending direction of each sliding way, a first hand-pulling block is mounted at the front end of each sliding rail, and when overhauling operation is carried out, firstly, the AWC hydraulic cylinder is ejected out of the rolling mill housing by using a jack, and then the AWC hydraulic cylinder is received by using the pulley assemblies; then, tightening the first hand-pulling block, pulling the pulley assembly arranged on the front side of the slide rail by using the first hand-pulling block so as to enable the pulley assembly on the front side to slide along the slide way, meanwhile, driving a group of pulley assemblies on the rear side to move, and pulling the AWC hydraulic cylinder out of the influence position of the rolling mill housing in the process; and finally, hoisting the AWC hydraulic cylinder away by using the traveling crane. Therefore, the dismounting tool is arranged on the outer side of the frame, the halt maintenance operation is not needed, the replacement time of the AWC hydraulic cylinder is greatly shortened, the maintenance efficiency is improved, and the production cost is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a hot rolling line vertical roll AWC hydraulic cylinder dismounting tool provided by the invention;
FIG. 2 is a schematic view of the sheave assembly of FIG. 1;
FIG. 3 is a schematic diagram of the operation of the AWC hydraulic cylinder dismounting tool for the hot rolling line vertical roll AWC hydraulic cylinder provided by the application;
fig. 4 is a working schematic diagram of the AWC hydraulic cylinder dismounting and mounting tool for the hot rolling line vertical roll AWC hydraulic cylinder provided by the application.
The device comprises a rolling mill housing, a rolling mill slide rail;
21-I-shaped steel and 22-wedge-shaped cushion blocks.
Detailed Description
The core of the invention is to provide a hot rolling line vertical roll AWC hydraulic cylinder dismounting tool, which solves the technical problems of low dismounting efficiency and long construction time occupation of an AWC hydraulic cylinder of a vertical roll mill.
Note that "front" herein refers to a direction to the right in fig. 1; "rear" refers to the direction to the left in fig. 1. All directional terms used herein are set forth based on their customary usage by those skilled in the art and the accompanying drawings of the specification, and their presence should not be construed as affecting the scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a hot rolling line vertical roll AWC hydraulic cylinder dismounting tool provided by the present invention; FIG. 2 is a schematic view of the sheave assembly of FIG. 1; FIG. 3 is a schematic diagram of the operation of the AWC hydraulic cylinder dismounting tool for the hot rolling line vertical roll AWC hydraulic cylinder provided by the application; fig. 4 is a working schematic diagram of the AWC hydraulic cylinder dismounting and mounting tool for the hot rolling line vertical roll AWC hydraulic cylinder provided by the application.
The invention provides a hot rolling line vertical roll AWC hydraulic cylinder dismounting tool which mainly comprises two slide rails 2 and at least four pulley assemblies, wherein the two slide rails 2 are arranged at the top of a rolling mill housing 1, the slide rails 2 are specifically arranged on the outer surface of the rolling mill housing 1 and are distributed along the movable direction of an AWC hydraulic cylinder 14, the slide rails 2 are provided with slide ways, and at least two pulley assemblies are respectively arranged on the slide ways of the slide rails 2. During installation, the pulley assemblies are installed on the slide ways of the slide rails 2 in advance, four groups of two pulleys are arranged on the slide ways of the slide rails 2, and then the slide rails 2 with the pulley assemblies are fixedly installed on the lower surface of the housing 1 of the AWC hydraulic cylinder rolling mill.
In addition, slide rail 2 is kept away from AWC pneumatic cylinder 14's front end portion and is installed two first hand-operated block 3, and under the exogenic action, first hand-operated block 3 provides the pulling force to the loose pulley assembly who locates the slide rail 2 front end.
When the AWC hydraulic cylinder 14 is overhauled, the first trolley 3 is tightened under the action of external tension, the first trolley 3 pulls the two pulley assemblies, and when the pulley assemblies slide on the slide way, the AWC hydraulic cylinder 14 is pulled until the AWC hydraulic cylinder 14 is pulled out of the frame in the process.
The core of the application lies in that by utilizing the slide and the pulley block system arranged at the top of the housing, the pulley component slides along the slide under the pulling of external force, so that the step of changing the lifting point back and forth when the traditional AWC cylinder is transported reversely is omitted, and the purpose of quick replacement is achieved.
Preferably, when the slide rail 2 is installed, the stress gravity center intersection point of the pulley assemblies in the two slide ways is located on the central vertical plane of the AWC hydraulic cylinder 14, as shown in fig. 1, so as to ensure that the AWC hydraulic cylinder 14 is dismounted in the preset direction, further improve the operation efficiency, and save more time and labor.
In a specific embodiment, the slide rail 2 includes an i-shaped steel 21 and a plurality of wedge-shaped spacers 22, as shown in fig. 1 and 2, the wedge-shaped spacers 22 are steel plates with a right trapezoid structure, and are disposed along the extending direction of the i-shaped steel 21, preferably, uniformly distributed along the extending direction of the i-shaped steel 21, and the i-shaped steel 21 is fixedly mounted on the mill housing 1 through the wedge-shaped spacers 22 and the connecting members. During installation, it is necessary to ensure that the two i-beams 21 are distributed in the same direction, i.e., that the i-beams 21 are arranged along the dismounting direction of the AWC hydraulic cylinder 14, so as to prevent pulling and shifting. The slide rail 2 is made of the common I-shaped steel 21 and the steel plate in the construction site, so that materials are convenient to obtain, and the cost is low.
Preferably, the I-shaped steel 21 and the wedge-shaped cushion block 22 can be in welded connection to improve the connection strength between the two, and the rolling mill housing 1 is detachably connected with the wedge-shaped cushion block 22 through connecting pieces such as bolts and the like so as to be convenient to detach and replace.
Each pulley component comprises two pulleys 4, two first screw rods 5, two first locking nuts 6, two baffle plates 7, a second screw rod 8, a second locking nut 9, a U-shaped connecting piece 10 and a second hand-pull block 11, the two pulleys 4 are respectively arranged in two slideways of the I-shaped steel 21, the two baffle plates 7 are arranged on the outer sides of the pulleys 4, the first screw rods 5 penetrate through the pulleys 4 and the baffle plates 7 for installation, and locking force is applied to the first screw rods 5 through the first locking nuts 6; the second screw rod 8 is arranged below the first screw rod 5 and penetrates through the two baffle plates 7, the opening end of the U-shaped connecting piece 10 penetrates through the second screw rod 8, the second hand-pull block 11 is hung on the second screw rod 8, and the second screw rod 8 is locked towards the direction of the baffle plates 7 by the second locking nut 9.
On the basis of the above embodiment, in order to prevent the pulley assembly at the front end from slipping out of the slideway, a first stopper may be installed at the front end of the sliding rail 2, and the first stopper plays a role of blocking, so as to prevent the front end pulley 4 from exceeding the movement stroke.
Further, a second stopper may be installed at the rear end of the slide rail 2, so as to prevent the rear end pulley 4 from coming off the slide way of the slide rail 2.
Specifically, a pair of holes are respectively formed in the front end portion and the rear end portion, the first blocking piece and the second blocking piece are specifically a third screw 12 and a third locking nut 13, the third screw 12 penetrates through the holes, and finally the third screw 12 is fastened by the third locking nut 13.
When the AWC hydraulic cylinder 14 is dismounted by adopting the dismounting tool provided by the application, the following steps can be executed:
firstly, manufacturing a special slide way, installing the special slide way at the distribution position of each AWC hydraulic cylinder 14 before actual maintenance, and installing a pulley 4 on a hoisting slide way of the AWC hydraulic cylinder 14 to be replaced according to the replacement requirement;
secondly, manufacturing a mandril (which can be manufactured by adopting an old roller way cardan shaft of a lower machine, the length of the mandril is determined according to the width of the memorial archway, and a proper position is reserved for an electric hydraulic jack 15), pushing the AWC cylinder out of the memorial archway by utilizing a 200t jack, and then catching the AWC hydraulic cylinder 14 by utilizing a 5t chain block hung on a pulley 4;
step three, tightening the first hand-pulling block 3 in the drawing 4, pulling the outer group of pulleys 4, enabling the outer group of second hand-pulling blocks 11 to slide along the slide way, driving the inner group of pulleys 4 to act, smoothly pulling the AWC hydraulic cylinder 14 out of the memorial archway affected position, and lifting the AWC cylinder away by using a travelling crane;
and step four, hoisting the AWC hydraulic cylinder 14 into the position of the slide rail 2 by using a crane, then receiving the AWC hydraulic cylinder by using a second hand-pulling block 11 suspended on a pulley 4, pulling a lifting lug arranged on the cylinder head of the AWC hydraulic cylinder 14 by using a 5t hand-pulling block in the rack, and pulling the AWC hydraulic cylinder 14 into the rack.
Through the steps, the problems of low dismantling efficiency and potential safety hazard caused by long time for transporting in the traditional dismantling method and working near the hoisted object can be solved.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The hot rolling line vertical roll AWC hydraulic cylinder dismounting tool provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. The AWC hydraulic cylinder dismounting tool for the vertical roll of the hot rolling line is characterized by comprising two sliding rails (2) distributed along the lower surface of a rolling mill housing (1), wherein the sliding rails (2) are provided with sliding ways, each sliding way is provided with at least two pulley assemblies, and the pulley assemblies can slide along the extending direction of the sliding ways under the action of external tension to pull the AWC hydraulic cylinder (14); two first hand-pulled hoists (3) are respectively installed at the front end parts of the two slide rails (2) far away from the AWC hydraulic cylinder (14) and are used for respectively pulling and locating the two pulley assemblies at the front part.
2. The AWC hydraulic cylinder unloading tooling as claimed in claim 1, wherein the stress gravity centers of the pulley assemblies distributed in different slideways meet at a point on the vertical plane of the center of the AWC hydraulic cylinder (14).
3. The AWC hydraulic cylinder dismounting tool for the hot rolling line vertical roll is characterized in that the slide rail (2) comprises an I-shaped steel (21) and a plurality of wedge-shaped cushion blocks (22) used for fixedly mounting the I-shaped steel (21) on the mill housing (1).
4. The AWC hydraulic cylinder dismounting tool for the hot rolling line vertical roll is characterized in that the I-shaped steel (21) is in welded connection with the wedge-shaped cushion block (22), and the wedge-shaped cushion block (22) is detachably connected with the mill housing (1) through bolts.
5. The AWC hydraulic cylinder dismounting tool for the hot rolling line vertical roll is characterized in that the pulley assembly comprises two pulleys (4) which are respectively arranged inside two slideways of the I-shaped steel (21), a first screw (5) is arranged at the center of each pulley (4) in a penetrating mode, a baffle (7) arranged outside each pulley (4) and a first locking nut (6) used for locking the first screw (5) towards the direction of the baffle (7); the novel combined type spring lock is characterized by further comprising second screw rods (8) penetrating through the bottoms of the two baffle plates (7) and installed, second locking nuts (9) used for locking the second screw rods (8), U-shaped connecting pieces (10) installed on the second screw rods (8), and second hand-pulled hoists (11) hung on the U-shaped connecting pieces (10).
6. The AWC hydraulic cylinder dismounting tool for the hot rolling line vertical rolls is characterized in that a first stopper used for preventing the pulley assembly from slipping out of the slideway is arranged at the front end of the tool.
7. The AWC hydraulic cylinder dismounting tool for the hot rolling line vertical roll is characterized by further comprising a second stopper which is arranged at the rear end of the sliding rail (2) and used for preventing the pulley assembly from slipping.
8. The AWC hydraulic cylinder dismounting tool for the hot rolling line vertical rolls of claim 7, wherein a pair of holes are formed in the front end portion and/or the rear end portion respectively, the first stopper and the second stopper are specifically a third screw rod (12) and a third lock nut (13), the third screw rod (12) is arranged in the pair of holes in a penetrating mode, and the third lock nut (13) is used for fastening the third screw rod (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910978450.0A CN110682074B (en) | 2019-10-15 | 2019-10-15 | Frock is unloaded to hot rolling line edger roll AWC pneumatic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910978450.0A CN110682074B (en) | 2019-10-15 | 2019-10-15 | Frock is unloaded to hot rolling line edger roll AWC pneumatic cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110682074A true CN110682074A (en) | 2020-01-14 |
| CN110682074B CN110682074B (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910978450.0A Active CN110682074B (en) | 2019-10-15 | 2019-10-15 | Frock is unloaded to hot rolling line edger roll AWC pneumatic cylinder |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202098959U (en) * | 2011-04-27 | 2012-01-04 | 上海宝冶集团有限公司 | Lifting tool for replacing tension roller of cold rolling temper mill |
| CN205973587U (en) * | 2016-08-19 | 2017-02-22 | 肖俊峰 | Multi -purpose gallows |
-
2019
- 2019-10-15 CN CN201910978450.0A patent/CN110682074B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202098959U (en) * | 2011-04-27 | 2012-01-04 | 上海宝冶集团有限公司 | Lifting tool for replacing tension roller of cold rolling temper mill |
| CN205973587U (en) * | 2016-08-19 | 2017-02-22 | 肖俊峰 | Multi -purpose gallows |
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| Publication number | Publication date |
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| CN110682074B (en) | 2022-02-08 |
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