CN111151581A - Manual roll changing device and method for two-roll mill - Google Patents
Manual roll changing device and method for two-roll mill Download PDFInfo
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- CN111151581A CN111151581A CN202010085955.7A CN202010085955A CN111151581A CN 111151581 A CN111151581 A CN 111151581A CN 202010085955 A CN202010085955 A CN 202010085955A CN 111151581 A CN111151581 A CN 111151581A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005096 rolling process Methods 0.000 claims abstract description 33
- 230000003716 rejuvenation Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
- B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
- B21B31/103—Manipulators or carriages therefor
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Abstract
A manual roll changing device and a manual roll changing method of a two-roll rolling mill comprise a roll changing frame, a lifting device and a spiral rotating pushing and pulling device, wherein the lifting device is installed on the roll changing frame, one part of a walking track of the lifting device extends out of the roll changing frame, and a threaded rod of the spiral rotating pushing and pulling device is in threaded connection with the roll changing frame. Compared with the prior art, the invention has the beneficial effects that: the roller changing device is a purely manual mechanical roller changing device, a crane is not needed in the process of pushing and pulling the roller, no electric equipment such as electric and large-scale hydraulic facilities is needed, the operation safety coefficient is higher, the equipment is light in weight, the occupied area is small, the structure is simple and easy to operate and control, the maintenance cost and the equipment failure rate are very low, the roller changing efficiency is basically equal to the roller changing efficiency of an automatic roller changing vehicle, a large amount of labor is not needed, and 2 workers can complete the roller changing operation.
Description
Technical Field
The invention relates to a roll changing vehicle of a rolling mill, in particular to a manual roll changing device and a manual roll changing method of a two-roll rolling mill.
Background
The two-roll mill is mainly used as a rolling experimental device for low-carbon steel and non-ferrous metal plates, and is widely applied to research and development of rolling processes and properties of rolled pieces in various laboratories. In the rolling process, the surface of the roller inevitably generates abrasion consumption, and the roller surface is seriously scratched, cracked and scratched and the like, so that the new roller needs to be replaced in time to avoid influencing the quality of the rolled plate blank.
Two roll changing modes are commonly used for changing the roll of the two-roll mill: the first is to replace the roller by crane and manpower; the second one is to use special automatic roll changing vehicle, which mainly includes roll changing device with motor driving mode and hydraulic driving mode. The first roll changing mode completely depends on a crane and manual operation, the roll surface of a lower roll is hung by the crane when the roll is changed, the crane slowly drives the upper roll and the lower roll to gradually move until a trolley wheel of the lower roll is lapped on an I-shaped steel temporarily built outside a rolling mill frame, then the roll is pulled outwards from the rolling mill frame by manual power, in order to prevent the safety accident caused by the inclined collapse of the roll, the crane needs to hang the lower roll all the time in the process of pulling out an old roll and loading the old roll into a new roll, and the crane needs to frequently change the hanging position along with the movement of the roll, so that the crane needs to repeatedly lift and hook the slow operation for many times, the two sides of the roll are not restrained when the crane falls down, the roll is very easy to topple, therefore, the roll changing mode has high risk when the roll is operated, the roll is pushed and pulled by manual power, the roll changing efficiency is very low, and the roll, at least three persons are required to replace the roller once, and the labor cost is high. The second roll changing mode adopts automatic roll changing, although the roll changing speed is high, and most of labor cost is saved, the structure of the equipment is complicated due to the adoption of an electric or hydraulic automatic roll changing driving mode, the size of the equipment is large, and the manufacturing cost and the later maintenance and repair cost are also very high.
Disclosure of Invention
The invention aims to provide a manual roll changing device and a manual roll changing method for a two-roll mill, aiming at the defects of the original roll changing mode, the manual roll changing device and the manual roll changing method for the two-roll mill are safe to operate, high in roll changing efficiency, low in cost and convenient to maintain.
In order to achieve the purpose, the invention adopts the following technical scheme:
the manual roll changing device of the two-roll rolling mill comprises a roll changing frame, a lifting device and a spiral rotating push-pull device, wherein the lifting device is installed on the roll changing frame, one part of a walking track of the lifting device extends out of the roll changing frame, and a threaded rod of the spiral rotating push-pull device is connected with the roll changing frame through threads.
The roll changing frame comprises a vertical support, a supporting chassis, wheels, supporting legs and a mounting plate, wherein the wheels and the supporting legs are mounted at the bottom of the supporting chassis, the vertical support is symmetrically mounted at two sides of the upper end of the supporting chassis, the mounting plate is mounted at one end of the vertical support through an assembling long hole and a bolt, the mounting position of the mounting plate on the vertical support extends out of the opposite side of the roll changing frame on a walking track, and the mounting plate is in threaded connection with a threaded rod.
The roller replacing device is characterized in that a side guide sliding plate is installed on the inner wall of the vertical support, a connecting plate is fixed at one end of the vertical support, and the installation position of the connecting plate on the vertical support is located on one side, extending out of the roller replacing frame, of the walking track.
The side guide sliding plate is provided with a long countersunk hole and is arranged on the vertical bracket through a countersunk bolt.
The supporting legs comprise horizontal rods and vertical rods, the vertical rods are connected with the horizontal rods through threads, and the horizontal rods are rotatably connected with the supporting chassis.
The lifting device comprises a walking rail, side guide wheels, a jack and a lifting frame, wherein the jack is installed at one end of a support chassis of the roll changing frame, one end of the walking rail is fixed on the lifting frame, the jack is connected with the lifting frame in a jacking mode, the side guide wheels are arranged on the outer sides of the walking rail and are embedded in a slide way on the vertical support of the roll changing frame.
The spiral rotating push-pull device comprises a push-pull head, a threaded rod, a handle and a pin shaft, wherein a shaft sleeve is arranged at one end of the threaded rod, the threaded rod is connected with the shaft sleeve through a bearing, the push-pull head is connected with the shaft sleeve through the pin shaft, and the handle is fixed at the other end of the threaded rod.
A roller-peeling method using a manual roller-changing device of a two-roller mill comprises the following specific steps:
1) releasing the balance of the upper roller to enable the upper roller to fall onto the lower roller, and removing the balance of the upper roller, the coupler and the roller baffle;
2) the puller and the lower roll bearing end cover are installed in a matching way;
3) moving the roll changing device to enable the two vertical supports to lean against the housing of the rolling mill stand, inserting the shape running track below the small wheel of the lower roll, and adjusting the position of the side guide sliding plate to enable the side guide sliding plate to be parallel to the position of the sliding plate on the inner side of the housing of the rolling mill stand;
4) fixing the connecting plate with the housing of the rolling mill frame;
5) adjusting the height of the supporting legs to enable the vertical rods to tightly prop against the ground for supporting the roll changing frame;
6) the walking track is jacked by a jack to drive the rollers to ascend simultaneously until the lower end face of the lower roller is just separated from the lower cross beam of the rolling mill frame;
7) connecting a push-pull head with a threaded rod by using a pin shaft, and slowly pulling out the roller from the rolling mill frame to the roller changing frame by rotating a handle to retract the threaded rod;
8) pulling the pin shaft, continuing to rotate the handle, and separating the pull head from the threaded rod;
9) releasing the pressure by using a jack, and driving the roller to fall onto the supporting chassis by using the walking track;
10) the upper roll and the lower roll are hoisted one by one, the pull head is pushed down and installed on a new roll, and the new roll is hoisted into the roll changing frame in sequence by a crane;
11) driving the walking track and the new roller to simultaneously rise to the position height of the step 6) through a jack;
12) rotating the handle, connecting the threaded rod with the push-pull head and inserting the pin shaft;
13) continuously rotating the handle to slowly push the roller into the rolling mill frame from the roller changing frame;
14) pulling off the pin shaft, and rotating the handle to separate the push head from the threaded rod;
15) releasing the pressure of the jack, so that the walking track drives the roller to fall on the supporting chassis;
16) and loosening the connecting plate fixed with the housing of the rolling mill frame.
Compared with the prior art, the invention has the beneficial effects that:
the roller changing device is a purely manual mechanical roller changing device, a crane is not needed in the process of pushing and pulling the roller, no electric equipment such as electric and large-scale hydraulic facilities is needed, the operation safety coefficient is higher, the equipment is light in weight, the occupied area is small, the structure is simple and easy to operate and control, the maintenance cost and the equipment failure rate are very low, the roller changing efficiency is basically equal to the roller changing efficiency of an automatic roller changing vehicle, a large amount of labor is not needed, and 2 workers can complete the roller changing operation.
Drawings
FIG. 1 is a schematic view of a roll changing device;
FIG. 2 is a schematic view of a side guide slide plate elongated counterbore structure;
FIG. 3 is a schematic view of the lifting device;
fig. 4 is a schematic view of a spiral rotary push-pull device.
In the figure: the device comprises a vertical support 1, a side guide sliding plate 1-1, a long countersunk hole 1-1-1, a countersunk bolt 1-1-2, a connecting plate 1-2, a support chassis 2, wheels 3, support feet 4, a horizontal rod 4-1, a vertical rod 4-2, a hydraulic jack 5-1, a telescopic spring 5-2, a pedal 5-3, a running track 5-4, a side guide wheel 5-5, a lifting frame 5-6, a spiral rotating push-pull device 6-1, a push-pull head 6-2, a handle 6-3, a pin shaft 6-4 and a mounting plate 7.
Detailed Description
The present invention will be described in detail below, but the scope of the present invention is not limited to the following embodiments.
As shown in figures 1-4, the manual roll changing device of the two-roll mill comprises a roll changing frame, a lifting device and a spiral rotating push-pull device 6, wherein the lifting device is arranged on the roll changing frame, a part of a traveling track 5-4 of the lifting device extends out of the roll changing frame, and a threaded rod 6-2 of the spiral rotating push-pull device 6 is connected with the roll changing frame through threads.
The roll changing frame comprises a vertical support 1, a supporting chassis 2, wheels 3, supporting legs 4 and a mounting plate 7, wherein the wheels 3 and the supporting legs 4 are mounted at the bottom of the supporting chassis 2, the vertical support 1 is symmetrically mounted at two sides of the upper end of the supporting chassis 2, the mounting plate 7 is mounted at one end of the vertical support 1 through assembling long holes and bolts, the mounting position of the mounting plate 7 on the vertical support 1 extends out of the opposite side of the roll changing frame on a walking track 5-4, and the mounting plate 7 is in threaded connection with a threaded rod 6-2. The mounting plate 7 can achieve a small range of height adjustment in the vertical direction.
The roller changing machine is characterized in that a side guide sliding plate 1-1 is installed on the inner wall of the vertical support 1, a connecting plate 1-2 is fixed at one end of the vertical support 1, and the installation position of the connecting plate 1-2 on the vertical support 1 is located on one side, extending out of the roller changing frame, of the traveling rail 5-4.
When the roller is changed, the connecting plate 1-2 is arranged at the position of the roller baffle of the original frame housing by bolts to fix the roller changing device and avoid slippage and toppling in the roller changing process.
Referring to fig. 2, a long countersunk hole 1-1-1 is formed in the side guide sliding plate 1-1, and the side guide sliding plate 1-1 is mounted on the vertical bracket 1 through a countersunk bolt 1-1-2.
The side guide sliding plate 1-1 is provided with a long counter sink 1-1, so that the side guide sliding plate can move in parallel in a small range in the vertical direction, the side guide sliding plate is arranged on the inner side of the vertical support 1 by using an inner hexagon bolt, and the fixing position can be determined according to the position height of a roller during roller changing.
The supporting legs 4 comprise horizontal rods 4-1 and vertical rods 4-2, the vertical rods 4-2 are connected with the horizontal rods 4-1 through threads, and the horizontal rods 4-1 are rotatably connected with the supporting chassis 2.
The horizontal rod 4-1 can be connected with the bottom of the supporting chassis 2 through the shaft, the supporting legs 4 can rotate around the shaft at the bottom of the supporting chassis 2, when the roller is changed, the supporting legs 4 can be rotated out to a proper supporting position from the lower part of the supporting chassis 2, when the roller is changed, the supporting legs 4 can be simultaneously retracted to the lower part of the supporting chassis 2, and the storage is convenient.
The vertical rod 4-2 is in threaded connection with the horizontal rod 4-1, the outer surface of the vertical rod 4-2 is made into a hexahedral foot shape, when the roller is changed, the vertical rod 4-2 is rotated by a wrench until all the vertical rods 4-2 are completely propped against the ground, the stability of the roller changing device is ensured, and after the roller is changed, the vertical rod 4-2 is rotated to the original position by the wrench.
2 vertical supports 1 are symmetrically arranged on a supporting chassis 2, 4 side guide sliding plates 1-1 are symmetrically arranged on the inner sides of the 2 vertical supports 1, 4 connecting plates 1-2 are arranged on the front end faces of the 2 vertical supports 1, and 4 wheels 3 and 4 supporting legs 4 are symmetrically arranged below the supporting chassis 2.
The lifting device comprises a walking rail 5-4, side guide wheels 5-5, a jack and a lifting frame 5-6, wherein the jack is installed at one end of the roller changing frame supporting chassis 2, one end of the walking rail 5-4 is fixed on the lifting frame 5-6, the jack is connected with the lifting frame 5-6 in a jacking mode, the side guide wheels 5-5 are arranged on the outer side of the walking rail 5-4, and the side guide wheels 5-5 are embedded in a slide way on the vertical support 1 of the roller changing frame.
In the embodiment of the invention, the hydraulic jack is adopted, because the installation position of the hydraulic jack 5-1 is lower, in order to facilitate treading to drive the hydraulic jack 5-1, the driving handle of the hydraulic jack 5-1 is removed, a pedal 5-3 is hinged above a small piston rod of the hydraulic jack 5-1, an expansion spring 5-2 is installed on the small piston rod, and when the pedal 5-3 is stepped to lift the hydraulic jack 5-1, the pedal 5-3 can realize automatic return under the action of the expansion spring 5-2.
4 side guide wheels 5-5 are symmetrically arranged on the outer side of the walking track 5-4, and when the jacking device is lifted, the side guide wheels 5-5 roll up and down on the inner side of the slideway on the vertical support 1, so that the stability of the jacking device in the roll changing process is ensured.
The spiral rotating push-pull device 6 comprises a push-pull head 6-1, a threaded rod 6-2, a handle 6-3 and a pin shaft 6-4, wherein a shaft sleeve is arranged at one end of the threaded rod 6-2, the threaded rod 6-2 is connected with the shaft sleeve through a bearing, the push-pull head 6-1 is connected with the shaft sleeve through the pin shaft 6-4, and the handle 6-3 is fixed at the other end of the threaded rod 6-2.
The push-pull head 6-1 is provided with a bolt hole which is matched and connected with the end cover of the roller bearing, the quick disassembly can be realized, before the roller is replaced, the push-pull head 6-1 is firstly installed on the end cover of the lower roller bearing, and the size of the push-pull head 6-1 can be determined according to the size of the end cover of the roller bearing.
The bearing is assembled in the front end of the threaded rod 6-2, so that relative self-rotation can be realized.
The threaded rod 6-2 and the mounting plate 7 at the rear end of the roll changing frame are matched in a right-handed thread mode, the handle 6-3 is shaken in a positive and negative mode during roll changing, the push-pull rod 6-1 can be rotated in a spiral mode to drive the roll to move forwards and backwards, in this mode, workers are prevented from directly contacting the roll in the roll changing process, and safety accidents are effectively avoided.
A roller-peeling method using a manual roller-changing device of a two-roller mill comprises the following specific steps:
1) releasing the balance of the upper roller to enable the upper roller to fall onto the lower roller, and removing the balance of the upper roller, the coupler and the roller baffle;
2) the push head 6-1 is matched with the end cover of the lower roll bearing;
3) moving the roll changing device to enable the two vertical supports 1 to lean against the housing of the rolling mill stand, inserting the shape running track 5-4 below the small wheel of the lower roll, adjusting the position of the side guide sliding plate 1-1, and enabling the side guide sliding plate 1-1 to be parallel to the position of the sliding plate on the inner side of the housing of the rolling mill stand;
4) fixing the connecting plate 1-2 with a housing of a rolling mill frame;
5) the height of the supporting leg 4 is adjusted to enable the vertical rod 4-2 to be tightly propped against the ground for supporting the roll changing frame;
the supporting legs 4 are rotated to a proper position from the lower side of the supporting chassis 2, the vertical rods 4-2 are rotated by a wrench until the vertical rods 4-2 are completely tightly propped against the ground, the stability of the roll changing device in the roll changing process is ensured, and accidental toppling is avoided.
6) The hydraulic jack is jacked up to the traveling track 5-4 by slowly stepping the pedal 5-3 to drive the roller to rise simultaneously until the lower end face of the lower roller is just separated from the lower cross beam of the rolling mill frame;
7) a pin shaft 6-4 is used for connecting a push-pull head 6-1 and a threaded rod 6-2, the threaded rod 6-2 is retracted by rotating a handle 6-3, and the roller is slowly pulled out of the rolling mill frame to a roller changing frame;
8) pulling out the pin shaft 6-4, continuing to rotate the handle 6-3, and separating the push head 6-1 from the threaded rod 6-2;
9) the hydraulic jack 5-1 releases the pressure, and the walking track 5-4 drives the roller to fall on the supporting chassis 2;
10) the upper roller and the lower roller are hoisted one by one, the pull head 6-1 is pushed down and installed on a new roller, and the new roller is hoisted into the roller changing frame in sequence by a crane;
11) slowly stepping the pedal 5-3 to enable the hydraulic jack 5-1 to drive the walking track 5-4 and the new roller to simultaneously ascend to the position height of the step 6);
12) rotating the handle 6-3 clockwise, connecting the threaded rod 6-2 with the push head 6-1 and inserting the pin shaft 6-4;
13) continuing to rotate the handle 6-3 clockwise to slowly push the roller into the rolling mill frame from the roller changing frame;
14) pulling the pin shaft 6-4, and rotating the handle 6-3 anticlockwise to separate the push head 6-1 from the threaded rod 6-2;
15) releasing the pressure of the hydraulic jack 5-1 to enable the walking track 5-4 to drive the roller to fall on the supporting chassis 2;
16) loosening a connecting plate 1-2 fixed with the housing of the rolling mill frame;
17) and resetting the 4 supporting legs 4 by using a spanner, retracting the supporting legs to the lower part of the supporting ground plate 2, pushing the roll changing device back to a storage position, and detaching a puller 6-1 connected with the lower roll, thereby finishing roll changing.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The manual roll changing device of the two-roll rolling mill is characterized by comprising a roll changing frame, a lifting device and a spiral rotating pushing and pulling device, wherein the lifting device is installed on the roll changing frame, one part of a walking track of the lifting device extends out of the roll changing frame, and a threaded rod of the spiral rotating pushing and pulling device is in threaded connection with the roll changing frame.
2. The manual roll changing device of the two-roll mill according to claim 1, wherein the roll changing frame comprises a vertical support, a support chassis, wheels, support legs and a mounting plate, the wheels and the support legs are mounted at the bottom of the support chassis, the vertical support is symmetrically mounted at two sides of the upper end of the support chassis, the mounting plate is mounted at one end of the vertical support through an assembly long hole and a bolt, the mounting position of the mounting plate on the vertical support is at the opposite side of a walking rail extending out of the roll changing frame, and the mounting plate is in threaded connection with a threaded rod.
3. The manual roll changing device for the two-roll rolling mill according to claim 2, wherein the vertical support is provided with a side guide sliding plate on the inner wall, a connecting plate is fixed at one end of the vertical support, and the connecting plate is arranged on the vertical support at the side of the running rail extending out of the roll changing frame.
4. A manual roll changer for a two roll mill according to claim 3 wherein the side guide slides are provided with elongated countersunk holes and are mounted on the vertical supports by means of countersunk bolts.
5. The manual roll changer of a two high rolling mill according to claim 2, wherein the support legs comprise a horizontal bar and a vertical bar, the vertical bar is connected with the horizontal bar through a screw thread, and the horizontal bar is rotatably connected with the support chassis.
6. The manual roll changing device of a two-roll mill according to claim 1, wherein the lifting device comprises a walking rail, side guide wheels, a jack and a lifting frame, the jack is installed at one end of a supporting chassis of the roll changing frame, one end of the walking rail is fixed on the lifting frame, the jack is connected with the lifting frame in a jacking mode, the side guide wheels are arranged on the outer side of the walking rail, and the side guide wheels are embedded in a slide way on a vertical support of the roll changing frame.
7. The manual roll changing device for the two-roll mill according to claim 1, wherein the spiral rotating push-pull device comprises a push-pull head, a threaded rod, a handle and a pin shaft, a shaft sleeve is arranged at one end of the threaded rod, the threaded rod is connected with the shaft sleeve through a bearing, the push-pull head is connected with the shaft sleeve through the pin shaft, and the handle is fixed at the other end of the threaded rod.
8. A method of rejuvenating rolls using the manual roll changer of a two roll mill as claimed in any one of claims 1 to 7, the method comprising:
1) releasing the balance of the upper roller to enable the upper roller to fall onto the lower roller, and removing the balance of the upper roller, the coupler and the roller baffle;
2) the puller and the lower roll bearing end cover are installed in a matching way;
3) moving the roll changing device to enable the two vertical supports to lean against the housing of the rolling mill stand, inserting the shape running track below the small wheel of the lower roll, and adjusting the position of the side guide sliding plate to enable the side guide sliding plate to be parallel to the position of the sliding plate on the inner side of the housing of the rolling mill stand;
4) fixing the connecting plate with the housing of the rolling mill frame;
5) the height of the supporting legs is adjusted to enable the vertical rods to tightly prop against the ground for stably supporting the roll changing frame;
6) the walking track is jacked by a jack to drive the rollers to ascend simultaneously until the lower end face of the lower roller is just separated from the lower cross beam of the rolling mill frame;
7) connecting a push-pull head with a threaded rod by using a pin shaft, and slowly pulling out the roller from the rolling mill frame to the roller changing frame by rotating a handle to retract the threaded rod;
8) pulling the pin shaft, continuing to rotate the handle, and separating the pull head from the threaded rod;
9) releasing the pressure by using a jack, and driving the roller to fall onto the supporting chassis by using the walking track;
10) the upper roll and the lower roll are hoisted one by one, the pull head is pushed down and installed on a new roll, and the new roll is hoisted into the roll changing frame in sequence by a crane;
11) driving the walking track and the new roller to simultaneously rise to the position height of the step 6) through a jack;
12) rotating the handle, connecting the threaded rod with the push-pull head and inserting the pin shaft;
13) continuously rotating the handle to slowly push the roller into the rolling mill frame from the roller changing frame;
14) pulling off the pin shaft, and rotating the handle to separate the push head from the threaded rod;
15) releasing the pressure of the jack, so that the walking track drives the roller to fall on the supporting chassis;
16) and loosening the connecting plate fixed with the housing of the rolling mill frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010085955.7A CN111151581A (en) | 2020-02-11 | 2020-02-11 | Manual roll changing device and method for two-roll mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010085955.7A CN111151581A (en) | 2020-02-11 | 2020-02-11 | Manual roll changing device and method for two-roll mill |
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| CN111151581A true CN111151581A (en) | 2020-05-15 |
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| CN202010085955.7A Pending CN111151581A (en) | 2020-02-11 | 2020-02-11 | Manual roll changing device and method for two-roll mill |
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| CN112974540A (en) * | 2021-02-08 | 2021-06-18 | 太原科技大学 | Wedge cross rolling mill for quickly replacing roller die of large axle |
| CN113369309A (en) * | 2021-06-04 | 2021-09-10 | 河南宏旺金属材料有限公司 | Roll changing device and roll changing method for changing roll shaft of rolling mill |
| CN114515760A (en) * | 2022-04-21 | 2022-05-20 | 常州德哈斯制辊科技有限公司 | Supporting roll changing device capable of reducing abrasion |
| CN114526414A (en) * | 2022-02-28 | 2022-05-24 | 深圳市道通科技股份有限公司 | Calibration support and calibration equipment |
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| CN112974540A (en) * | 2021-02-08 | 2021-06-18 | 太原科技大学 | Wedge cross rolling mill for quickly replacing roller die of large axle |
| CN112974540B (en) * | 2021-02-08 | 2022-07-12 | 太原科技大学 | Wedge cross rolling mill for quickly replacing roller die of large axle |
| CN113369309A (en) * | 2021-06-04 | 2021-09-10 | 河南宏旺金属材料有限公司 | Roll changing device and roll changing method for changing roll shaft of rolling mill |
| CN114526414A (en) * | 2022-02-28 | 2022-05-24 | 深圳市道通科技股份有限公司 | Calibration support and calibration equipment |
| CN114515760A (en) * | 2022-04-21 | 2022-05-20 | 常州德哈斯制辊科技有限公司 | Supporting roll changing device capable of reducing abrasion |
| CN114515760B (en) * | 2022-04-21 | 2022-07-12 | 常州德哈斯制辊科技有限公司 | Supporting roll changing device capable of reducing abrasion |
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