CN220311357U - Hot rolling line auxiliary winding roller rack convenient to move - Google Patents
Hot rolling line auxiliary winding roller rack convenient to move Download PDFInfo
- Publication number
- CN220311357U CN220311357U CN202321959388.9U CN202321959388U CN220311357U CN 220311357 U CN220311357 U CN 220311357U CN 202321959388 U CN202321959388 U CN 202321959388U CN 220311357 U CN220311357 U CN 220311357U
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- support plate
- side support
- roller
- roll
- pedestal
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- 238000005098 hot rolling Methods 0.000 title claims abstract description 21
- 238000004804 winding Methods 0.000 title abstract description 10
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000013016 damping Methods 0.000 claims description 7
- 210000002421 cell wall Anatomy 0.000 claims 3
- 238000010276 construction Methods 0.000 claims 2
- 238000001816 cooling Methods 0.000 abstract description 4
- 238000012546 transfer Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Rollers For Roller Conveyors For Transfer (AREA)
Abstract
The utility model discloses a hot rolling line wrapper roller bench convenient to move, and relates to the technical field of hot rolling wrapper roller matching equipment. According to the utility model, the auxiliary winding roller to be overhauled can be directly transferred to an overhauling area through the pedestal main body and the moving device, a series of complicated operations such as disassembly, hoisting and transportation are not needed, and the overhauling time is greatly saved; through the supporting device and the fixing device, the alignment of the position of the equipment and the fixation during working can be realized through the ground nail holes on the ground and the ground nails which can be contained on the equipment; through pedestal main part and mobile device, can realize helping the quick replacement of roll up roller, need not to wait for helping the roll up roller cooling down just can dismantle, reduce down time, improve work efficiency.
Description
Technical Field
The utility model relates to the technical field of hot-rolling auxiliary roll supporting equipment, in particular to a hot-rolling line auxiliary roll rack convenient to move.
Background
The hot rolling is a material processing method which drags a rolled piece into a space between rollers by means of friction force of rotating rollers, and simultaneously, the rolled piece is compressed and deformed between two rollers or more than two rollers by means of pressure applied by the rollers; the finished product steel strip after finish rolling is coiled by a coiling machine, the coiling machine is provided with a pair of upper pinch rolls and lower pinch rolls, three auxiliary coiling rolls are uniformly distributed around a coiling drum of the coiling machine, a trench is arranged below the coiling drum, and the depth is 7-8 meters; the auxiliary winding roller is used for accurately conveying the head of the strip to the periphery of the winding drum, has severe working conditions, works at high temperature, high pressure and high speed and under impact load, and often needs to overhaul the wiping roller, and is very dangerous and difficult to disassemble and hoist due to large mass and close to a pit when being disassembled.
Such as Chinese patent publication No.: an auxiliary device for replacing a winding-up roller of a winding machine of CN217726688U comprises a supporting mechanism which can be lifted up and down to be used for supporting the winding-up roller, and a clamping and limiting mechanism which is arranged on one side of the supporting mechanism and is used for limiting the winding-up roller; the supporting mechanism comprises a fixed table and a movable table arranged above the fixed table, the movable table is driven by a first driving part to move on the fixed table along the front-back direction, two carrier rollers are arranged on the movable table, the two carrier rollers are arranged in front-back parallel, and the two carrier rollers are driven by a second driving part to achieve mutual approaching or mutual distancing.
In order to solve the problem of difficult disassembly and assembly of the auxiliary roll, the prior art adopts a mode of designing an auxiliary roll assisting device capable of assisting disassembly, but the problems that the auxiliary roll has large quality and cylindrical shape, the roll gap distance between the auxiliary roll and a winding drum is strictly required, the temperature of the auxiliary roll which is just finished is higher, the auxiliary roll is difficult to disassemble and inconvenient to transport and transfer in the follow-up process, the roll gap distance needs to be readjusted during reinstallation, and the auxiliary roll is required to be disassembled after stopping and waiting for cooling are solved.
Disclosure of Invention
The utility model aims to provide a hot rolling line wrapper roller rack convenient to move, so as to solve the problems in the background technology.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a hot rolling line helps a roll roller rack convenient to remove, includes helps a roll roller main part, the bottom of helping a roll roller main part is provided with the roller frame main part, the bottom fixed mounting of roller frame main part has the rack main part, the bottom fixed mounting of rack main part has mobile device, the bottom fixed mounting of rack main part has strutting arrangement, be provided with fixing device on the surface of rack main part;
the supporting device comprises a hydraulic shaft seat and a supporting plate, and the hydraulic shaft seat is fixedly arranged at the bottom of the rack main body;
the fixing device comprises a rotary joint, a first side support plate, a second side support plate and ground nails, wherein the rotary joint is embedded and installed on the outer surface of the rack main body.
The technical scheme of the utility model is further improved as follows: the two side surfaces of the auxiliary roller main body are provided with through rotary shaft holes;
by adopting the technical scheme, the distance and the angle between the auxiliary winding roller main body and the winding drum are adjusted under the drive of the roller frame.
The technical scheme of the utility model is further improved as follows: the roll stand comprises a roll stand base, a roll stand, a first-stage hydraulic rod and a second-stage hydraulic rod, wherein a through device groove is formed in one side of the upper surface of the roll stand base, a central shaft structure is arranged on the other side of the upper surface of the roll stand base, one end of the roll stand is sleeved on the outer surface of the central shaft structure, a roll-assisting roll groove is formed in the outer surface of the roll stand, a rotating shaft structure is arranged on the groove wall of the roll-assisting roll groove, the roll-assisting roll main body is sleeved on the rotating shaft structure, one ends of the first-stage hydraulic rod and the second-stage hydraulic rod are symmetrically and fixedly arranged on two side surfaces of the roll stand, and the other ends of the first-stage hydraulic rod and the second-stage hydraulic rod are symmetrically embedded on the device groove wall of the roll stand base;
by adopting the technical scheme, the primary hydraulic rod and the secondary hydraulic rod drive the roller frame to move around the rotating shaft, so that the auxiliary roller main body is driven to adjust the position and the gap between the rollers.
The technical scheme of the utility model is further improved as follows: the rack main body comprises a pedestal, a fixed seat and fixed columns, wherein the pedestal is fixedly arranged at the bottom of a roller frame base, an equipment groove is formed in the upper surface of the pedestal, the equipment groove of the pedestal is positioned right below the equipment groove of the roller frame base, through switching grooves are symmetrically and equidistantly formed in the bottom of the outer surface of the pedestal, switching shaft structures are arranged on the groove walls of the switching grooves, the fixed seat is symmetrically and fixedly arranged on the outer surface of the pedestal, fixing holes are symmetrically formed in the inner side surface of the fixed seat, and one end of each fixed column is embedded into each fixing hole of the fixed seat;
by adopting the technical scheme, the equipment groove can be provided with other auxiliary equipment such as a cooling device, and the fixing seat utilizes the fixing column to fix the first side support plate and the second side support plate.
The technical scheme of the utility model is further improved as follows: the movable device comprises a plurality of groups of wheel seats, universal wheel shafts, universal wheels and damping springs, wherein the wheel seats are symmetrically and fixedly arranged at the bottom of a pedestal, fixing holes are symmetrically formed in the inner side surfaces of the wheel seats, one ends of the fixing columns are embedded into the fixing holes of the wheel seats, the universal wheel shafts are embedded into the bottom of the wheel seats, the universal wheels are fixedly arranged at the bottom of the universal wheel shafts, and the damping springs are sleeved on the outer surfaces of the universal wheel shafts;
by adopting the technical scheme, the fixing holes on the wheel seat are used for fixing the positions of the first side support plate and the second side support plate by the fixing columns, so that the conversion of the device in the moving state and the fixing state is realized.
The technical scheme of the utility model is further improved as follows: the number of the supporting devices is multiple, the hydraulic shaft seats are symmetrically and fixedly arranged at the bottom of the pedestal, and the supporting plates are embedded and arranged at the bottom of the hydraulic shaft seats;
by adopting the technical scheme, the supporting device is used for providing a certain support in a fixed state and is also used for lifting the ground nail embedded in the ground in a switching state.
The technical scheme of the utility model is further improved as follows: one end of the rotary joint is embedded and installed in a switching groove of the pedestal, a switching shaft of the pedestal is embedded and installed on the outer surface of the rotary joint, the switching groove is formed in one side of the outer surface of the first side support plate and one side of the second side support plate at equal intervals, a switching shaft structure is arranged on the groove wall of the switching groove, the other end of the rotary joint is embedded and installed in the switching groove of the first side support plate and the second side support plate, the switching shaft structure of the first side support plate and the second side support plate is embedded and installed on the outer surface of the rotary joint, fixing holes are symmetrically formed in the left side surface and the right side surface of the first side support plate and the second side support plate, the other end of the fixing column can be matched with the fixing holes of the first side support plate and the second side support plate, ground pin grooves are formed in the other side of the outer surface of the first side support plate and the second side support plate at equal intervals, ground pin structures are arranged on the groove wall of the ground pin grooves, and ground pins are embedded and installed on the outer surface of the first side support plate and the second side support plate;
by adopting the technical scheme, the first side support plate and the second side support plate are used for providing support in a fixed state, and the ground nails provide alignment and fixation of positions, so that the device is prevented from shaking.
By adopting the technical scheme, compared with the prior art, the utility model has the following technical progress:
1. the utility model provides a hot rolling line auxiliary roll rack convenient to move, which can directly transfer an auxiliary roll to be overhauled to an overhauling area through a pedestal main body and a moving device, does not need a series of complicated operations such as disassembly, hoisting and transportation, and greatly saves overhauling time.
2. The utility model provides a hot rolling line winding-assisting roller rack convenient to move, which can realize the alignment of the position of equipment and the fixation during working through a supporting device and a fixing device and through ground nail holes on the ground and ground nails which can be contained on the equipment.
3. The utility model provides a hot rolling line auxiliary roll rack convenient to move, which can realize quick replacement of auxiliary rolls through a pedestal main body and a moving device, can be disassembled without waiting for the auxiliary rolls to cool down, reduces the downtime and improves the working efficiency.
Drawings
FIG. 1 is a schematic diagram of a mobile state structure according to the present utility model;
FIG. 2 is a schematic view of a fixed state structure of the present utility model;
FIG. 3 is a half cross-sectional view of the present utility model;
FIG. 4 is a schematic view of a fixing device according to the present utility model;
fig. 5 is a schematic structural view of a side support plate according to the present utility model.
In the figure: 1. a wrapper roller body; 2. a roller frame body; 3. a gantry main body; 4. a mobile device; 5. a support device; 6. a fixing device; 21. a roller frame base; 22. a roller frame; 23. a first-stage hydraulic rod; 24. a secondary hydraulic rod; 31. a pedestal; 32. a fixing seat; 33. fixing the column; 41. a wheel seat; 42. a universal wheel axle; 43. a universal wheel; 44. a damping spring; 51. a hydraulic shaft seat; 52. a support plate; 61. a rotary joint; 62. a first side support plate; 63. a second side support plate; 64. and (5) floor nailing.
Detailed Description
The utility model is further illustrated by the following examples:
example 1
As shown in fig. 1-5, the utility model provides a hot rolling line wrapper roller rack convenient to move, which comprises a wrapper roller main body 1, wherein two side surfaces of the wrapper roller main body 1 are provided with through rotating shaft holes, and the wrapper roller main body 1 is driven by a roller frame 22 to adjust the distance and angle between the wrapper roller main body 1 and a winding drum;
the bottom of the auxiliary roll body 1 is provided with a roll frame body 2, the roll frame body 2 comprises a roll frame base 21, a roll frame 22, a primary hydraulic rod 23 and a secondary hydraulic rod 24, a through device groove is formed in one side of the upper surface of the roll frame base 21, a central shaft structure is arranged on the other side of the upper surface of the roll frame base 21, one end of the roll frame 22 is sleeved on the outer surface of the central shaft structure, an auxiliary roll groove is formed in the outer surface of the roll frame 22, a rotating shaft structure is arranged on the groove wall of the auxiliary roll groove, the auxiliary roll body 1 is sleeved on the rotating shaft structure, one ends of the primary hydraulic rod 23 and the secondary hydraulic rod 24 are symmetrically and fixedly arranged on two side surfaces of the roll frame 22, the other ends of the primary hydraulic rod 23 and the secondary hydraulic rod 24 are symmetrically embedded in the device groove wall of the roll frame base 21, and the primary hydraulic rod 23 and the secondary hydraulic rod 24 drive the roll frame 22 to move around the rotating shaft, so that the auxiliary roll body 1 is driven to adjust the position and the roll gap;
the bottom of the roller frame main body 2 is fixedly provided with a rack main body 3, the rack main body 3 comprises a pedestal 31, a fixed seat 32 and a fixed column 33, the pedestal 31 is fixedly arranged at the bottom of the roller frame base 21, equipment grooves are formed in the upper surface of the pedestal 31, the equipment grooves of the pedestal 31 are positioned right below the equipment grooves of the roller frame base 21, through switching grooves are symmetrically and equidistantly formed in the bottom of the outer surface of the pedestal 31, switching shaft structures are arranged on the walls of the switching grooves, the fixed seat 32 is symmetrically and fixedly arranged on the outer surface of the pedestal 31, fixed holes are symmetrically formed in the inner side surface of the fixed seat 32, one end of the fixed column 33 is embedded and arranged in the fixed holes of the fixed seat 32, the equipment grooves can be provided with other auxiliary equipment such as a cooling device, and the fixed seat 32 utilizes the fixed column 33 to fix the side support plate I62 and the side support plate II 63;
the bottom fixed mounting of rack main part 3 has mobile device 4, mobile device 4 is including wheel seat 41, universal shaft 42, universal wheel 43 and damping spring 44, mobile device 4 quantity is the multiunit, wheel seat 41 symmetry fixed mounting is in the bottom of pedestal 31, the fixed orifices has been seted up to the symmetry on the medial surface of wheel seat 41, the one end embedding of fixed column 33 is installed in the fixed orifices of wheel seat 41, universal shaft 42 embedding is installed in the bottom of wheel seat 41, universal wheel 43 fixed mounting is in the bottom of universal shaft 42, damping spring 44 cover is established on the surface of universal shaft 42, the fixed orifices on wheel seat 41 is used for utilizing the fixed column 33 fixed side branch board one 62, the position of side branch board two 63, realize the conversion of device in two kinds of states of moving state and fixed state.
Example 2
As shown in fig. 1-5, on the basis of embodiment 1, the present utility model provides a technical solution: preferably, the bottom of the stand main body 3 is fixedly provided with the supporting device 5, the supporting device 5 comprises a hydraulic shaft seat 51 and a supporting plate 52, the hydraulic shaft seat 51 is fixedly installed at the bottom of the stand main body 3, the number of the supporting devices 5 is multiple, the hydraulic shaft seats 51 are symmetrically and fixedly installed at the bottom of the pedestal 31, the supporting plate 52 is embedded and installed at the bottom of the hydraulic shaft seat 51, the supporting device 5 is used for providing a certain support in a fixed state, and the supporting device is also used for lifting ground nails 64 embedded into the ground in a switching state.
Example 3
As shown in fig. 1-5, on the basis of embodiments 1-2, the present utility model provides a technical solution: preferably, the outer surface of the rack main body 3 is provided with the fixing device 6, the fixing device 6 comprises a rotary joint 61, a first side support plate 62, a second side support plate 63 and a ground nail 64, the rotary joint 61 is embedded and installed on the outer surface of the rack main body 3, one end of the rotary joint 61 is embedded and installed in a switching groove of the pedestal 31, a switching shaft of the pedestal 31 is embedded and installed on the outer surface of the rotary joint 61, the switching groove is formed in one side of the outer surface of the first side support plate 62 and one side of the second side support plate 63 at equal intervals, a switching shaft structure is arranged on the wall of the switching groove, the other end of the rotary joint 61 is embedded and installed in the switching groove of the first side support plate 62 and the second side support plate 63, the switching shaft structure of the first side support plate 62 and the second side support plate 63 is embedded and installed on the outer surface of the rotary joint 61, the fixing holes are symmetrically formed in the left side surface and the right side surface of the first side support plate 62 and the second side support plate 63, the other end of the fixing post 33 can be matched with the fixing holes of the first side support plate 62 and the second side support plate 63, the other side support plate 62 and the other side of the side support plate 63 is provided with the ground nail groove at equal intervals, the ground nail groove is formed in the other side surface of the second side support plate 63 is used for preventing the first side support plate and the second side support plate 63 from being embedded and the ground nail from being embedded and fixed in the first side support plate 63.
The working principle of the hot rolling line wrapper roller rack convenient to move is specifically described below.
As shown in fig. 1-5, in the fixed state, the ground nail 64 extends out, the first side support plate 62 and the second side support plate 63 are put down, the fixing column 33 arranged on the side surface of the wheel seat 41 extends out, the first side support plate 62 and the second side support plate 63 are fixed, the ground nail 64 is embedded into the ground, the support plate 52 is grounded to provide support, the first-stage hydraulic rod 23 and the second-stage hydraulic rod 24 drive the roller frame 22 to move around the rotating shaft, the roller frame 22 drives the auxiliary roller main body 1 to adjust the position, and the gap between rollers is adjusted; when the maintenance auxiliary roller main body 1 needs to be replaced, the hydraulic shaft seat 51 drives the supporting plate 52 to extend, the rack main body 3 is jacked up, the ground nails 64 are lifted out, the ground nails 64 are rotated to be folded in the ground nail grooves, the fixed columns 33 on the wheel seat 41 are reset, the first side support plate 62 and the second side support plate 63 are folded upwards and folded, the fixed columns 33 on the fixed seat 32 are ejected out, the first side support plate 62 and the second side support plate 63 are fixed, the supporting plate 52 is contracted, the universal wheels 43 are grounded, and the rack main body 3 is pushed to complete transfer.
The foregoing utility model has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.
Claims (7)
1. The utility model provides a hot rolling line helps a roll roller rack convenient to remove, includes helps a roll roller main part (1), the bottom of helping a roll roller main part (1) is provided with roller frame main part (2), the bottom fixed mounting of roller frame main part (2) has rack main part (3), the bottom fixed mounting of rack main part (3) has mobile device (4), its characterized in that: the bottom of the rack main body (3) is fixedly provided with a supporting device (5), and the outer surface of the rack main body (3) is provided with a fixing device (6);
the supporting device (5) comprises a hydraulic shaft seat (51) and a supporting plate (52), and the hydraulic shaft seat (51) is fixedly arranged at the bottom of the rack main body (3);
the fixing device (6) comprises a rotary joint (61), a first side support plate (62), a second side support plate (63) and ground nails (64), and the rotary joint (61) is embedded and installed on the outer surface of the rack main body (3).
2. The movable hot rolling line wrapper roller stand according to claim 1, wherein: the two side surfaces of the auxiliary roller main body (1) are provided with through rotating shaft holes.
3. The movable hot rolling line wrapper roller stand according to claim 2, wherein: the utility model provides a roll stand, including roller frame base (21), roller frame (22), one-level hydraulic stem (23) and second grade hydraulic stem (24), the equipment groove that link up has been seted up to upper surface one side of roller frame base (21), the upper surface opposite side of roller frame base (21) is provided with the center pin structure, the one end cover of roller frame (22) is established on the surface of center pin structure, roll-up roller groove has been seted up on the surface of roller frame (22), be provided with rotation axis structure on roll-up roller groove's the cell wall, roll-up roller main part (1) cover is established on rotation axis structure, one end symmetry fixed mounting of one-level hydraulic stem (23), second grade hydraulic stem (24) is on the both sides face of roller frame (22), the other end symmetry embedding of one-level hydraulic stem (23), second grade hydraulic stem (24) is installed on the equipment groove wall of roller frame base (21).
4. A hot rolling line wrapper roller stand for facilitating movement as defined in claim 3, wherein: the utility model provides a rack main part (3) is including pedestal (31), fixing base (32) and fixed column (33), pedestal (31) fixed mounting is in the bottom of roller frame base (21), equipment groove has been seted up to the upper surface of pedestal (31), the equipment groove of pedestal (31) is located the equipment groove of roller frame base (21) under, the switching groove of link up has been seted up to the surface bottom symmetry equidistant of pedestal (31), be provided with the switching shaft structure on the switching groove cell wall, fixing base (32) symmetry fixed mounting is on the surface of pedestal (31), the fixed orifices has been seted up to the symmetry on the medial surface of fixing base (32), the one end embedding of fixed column (33) is installed in the fixed orifices of fixing base (32).
5. The movable hot rolling line wrapper roller stand according to claim 4, wherein: the utility model provides a mobile device (4) is including wheel seat (41), universal shaft (42), universal wheel (43) and damping spring (44), the quantity of mobile device (4) is the multiunit, wheel seat (41) symmetry fixed mounting is in the bottom of pedestal (31), the fixed orifices has been seted up to the symmetry on the medial surface of wheel seat (41), the one end embedding of fixed column (33) is installed in the fixed orifices of wheel seat (41), the bottom in wheel seat (41) is installed in universal shaft (42) embedding, the bottom in universal shaft (42) is installed to universal wheel (43) fixed mounting, damping spring (44) cover is established on the surface of universal shaft (42).
6. The movable hot rolling line wrapper roller stand according to claim 4, wherein: the number of the supporting devices (5) is multiple, the hydraulic shaft seats (51) are symmetrically and fixedly arranged at the bottom of the pedestal (31), and the supporting plates (52) are embedded and arranged at the bottom of the hydraulic shaft seats (51).
7. The movable hot rolling line wrapper roller stand according to claim 5, wherein: one end of the rotary joint (61) is embedded and installed in a switching groove of the pedestal (31), a switching shaft of the pedestal (31) is embedded and installed on the outer surface of the rotary joint (61), the switching grooves are formed on one side of the outer surface of the first side support plate (62) and one side of the outer surface of the second side support plate (63) at equal intervals, a switching shaft structure is arranged on the wall of the switching groove, the other end of the rotary joint (61) is embedded and installed in the switching grooves of the first side support plate (62) and the second side support plate (63), the switching shaft structures of the first side support plate (62) and the second side support plate (63) are embedded and installed on the outer surface of the rotary joint (61), the side support plate I (62), the fixed orifices have been seted up to the symmetry on the left and right sides face of side support plate II (63), the other end of fixed column (33) can be with the fixed orifices cooperation of side support plate I (62), side support plate II (63), the equidistant ground nail groove of having seted up of surface opposite side of side support plate I (62), side support plate II (63), be provided with ground nail axle construction on the cell wall in ground nail groove, ground nail (64) embedding is installed in the ground nail groove of side support plate I (62), side support plate II (63), ground nail axle construction embedding is installed on the surface of side support plate I (62), side support plate II (63).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321959388.9U CN220311357U (en) | 2023-07-25 | 2023-07-25 | Hot rolling line auxiliary winding roller rack convenient to move |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321959388.9U CN220311357U (en) | 2023-07-25 | 2023-07-25 | Hot rolling line auxiliary winding roller rack convenient to move |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220311357U true CN220311357U (en) | 2024-01-09 |
Family
ID=89423907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321959388.9U Active CN220311357U (en) | 2023-07-25 | 2023-07-25 | Hot rolling line auxiliary winding roller rack convenient to move |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220311357U (en) |
-
2023
- 2023-07-25 CN CN202321959388.9U patent/CN220311357U/en active Active
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