CN201841158U - Roll shifting device for working roll of rolling mill and safe bolt component thereof - Google Patents
Roll shifting device for working roll of rolling mill and safe bolt component thereof Download PDFInfo
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- CN201841158U CN201841158U CN2010205246838U CN201020524683U CN201841158U CN 201841158 U CN201841158 U CN 201841158U CN 2010205246838 U CN2010205246838 U CN 2010205246838U CN 201020524683 U CN201020524683 U CN 201020524683U CN 201841158 U CN201841158 U CN 201841158U
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Abstract
The utility model discloses a roll shifting device for a working roll of a rolling mill, which comprises a hydraulic cylinder for roll shifting, and a movable component for roll shifting; one end of the hydraulic cylinder for roll shifting is fixed on a frame of the rolling mill; a piston rod stretches out of the other end of the hydraulic cylinder for roll shifting; the movable component for roll shifting can clamp the end part of a bearing pedestal, and can be sheathed on the outer wall of the hydraulic cylinder for roll shifting in a sliding way; the piston rod is connected with the movable component for roll shifting through a safe bolt component which is dismountable; and the safe bolt component is provided with at least one easy-cracking part. When the coaxial force applied to the safe bolt component is larger than a set load, the easy-cracking part is cracked so as to release the coaxial force and play the role of protecting the roll shifting device. The utility model also provides a safe bolt component used for the roll shifting device for the working roll of the rolling mill.
Description
Technical field
The utility model relates to a kind of large-scale steel rolling equipment in the field of metallurgical machine, especially a kind of operation roll of mill roll shifting device and breaker bolt assembly thereof.
Background technology
At present, adopted multiple means and method to improve the roll gap convexity on the existing strip-mill strip, control panel shape, wherein roll shifting technology is to use a kind of comparatively widely control method.In existing milling train, be provided with top working roll and bottom working roll, one end of upper and lower working roll is installed in frame (memorial archway) window of milling train transmission side by the transmission side bearing block, the other end is installed in by the fore side bearing block in the framework window of milling train fore side, and fore side bearing block and transmission side bearing block can be axially movable with respect to frame.Be arranged with two described operation roll of mill roll shifting devices that are packed in the rolling-mill housing outside respectively at the milling train fore side, in the axis both sides of operation roll of mill, act on the bearing block of fore side by the roll shifting device, realized the axial roll shifting operation of upper and lower working roll, improve harmful the contact and the roll gap convexity between working roll and the backing roll, helped controlling the plate shape of rolled piece.
Please refer to Fig. 1 to 4, be respectively the main TV structure schematic diagram of existing operation roll of mill roll shifting device; The side-looking structural representation of existing operation roll of mill roll shifting device; The A-A of Fig. 1 is to cross-sectional view; And the B-B of Fig. 3 is to cross-sectional view.
As shown in Figures 1 to 3, existing roll shifting device 100 comprises roll shifting hydraulic cylinder 101 and roll shifting moving assembly, one side of described roll shifting hydraulic cylinder 101 is installed in by bolt 114 on the frame 203 of milling train fore side, reaches the load of tumbling that causes thus the roll shifting device to bear the roll axial force; Its opposite side offers plunger shaft 103, one piston rods 102 and cooperates with described plunger shaft 103 along the inwall of plunger shaft 103 and slide.On the outer wall of described roll shifting hydraulic cylinder 101, can be arranged with described roll shifting moving assembly slidably, this roll shifting moving assembly is made up of interior cover 104, overcoat 105, gland 106 and clamp 107 etc., cover 104 can be set on the outer wall of roll shifting hydraulic cylinder 101 slidably wherein, cover 104 can slide along the outer wall of hydraulic cylinder 101 in making, interior cover 104 is provided with protuberance 111 near a side of frame 203; Overcoat 105 overlap on 104 in can be sleeved on slidably; Gland 106 is arranged at the outside of roll shifting hydraulic cylinder 101 cylinder mouths, and fixedlys connected with interior cover 104 by bolt 113, makes gland 106 and interior cover 104 connect as one; Piston rod 102 ends are provided with thread segment 108, by nut 115 and load pad 116 through gland 106 piston rod 102 are connected with the roll shifting moving assembly; Clamp 107 is arranged in the draw-in groove 109 that protuberance 111 end faces of the end face of overcoat 105 and interior cover 104 form, and the end of the bearing block 201 of milling train fore side can be held between the protuberance 111 of clamp 107 and interior cover 104.When roll shifting, roll shifting hydraulic cylinder 101 feeds pressure oil, piston rod 102 is slided along plunger shaft 103 inwalls, piston rod 102 drives gland 106, overcoat 105 and interior cover 104 moving axially along roll shifting hydraulic cylinder 101, protuberance 111 impeller-hub bearings 201 by clamp 107 and interior cover 104 are moved, and then have realized the roll shifting operation of milling train.
As shown in Figure 4, in the prior art, in described clamp 107 centerline LL ' two the installing in the slotted eyes and be respectively equipped with clamp fluid pressure drive device 110 of both sides, can drive clamp 107 by this two decometers plate fluid pressure drive device 110 and move horizontally, guarantee that clamp 107 can cooperate the end of clamp shaft bearing 201 with protuberance 111 along roll shifting hydraulic cylinder 101.When mill roll, clamp fluid pressure drive device 110 drives clamp 107 and outwards moves, and abdicates the outwards space of motion of bearing block 201, so that carry out roller replacing operation; After roll change was finished, clamp fluid pressure drive device 110 drove clamps 107 and moves inwards, blocked bearing block 201 with the protuberance 111 of interior cover 104.
In addition, be provided with rotation preventing device 112 between described roll shifting hydraulic cylinder 101 and described clamp 107, rotation preventing device 112 runs through described interior cover 104, and the one end is fixed in roll shifting hydraulic cylinder 101, the other end passes the groove of offering on the clamp 107, and described rotation preventing device 112 plays the effect that prevents that the roll shifting moving assembly from rotating.
Existing roll shifting apparatus structure size is big, and device load-bearing capability is strong, and it is big that its inside and outside cover is provided with sectional dimension; have when roll shifting is operated; avoid the roll shifting cylinder to be subjected to cross force, can play the effect of protection roll shifting cylinder to a certain extent, but it also have the some shortcomings part:
1, when milling train is worked, when milling train produces bigger axial load at work, particularly during the milling train roll breakage, roll breakage moment will produce huge axial force, and along the transfers of working roll.If this axial force may be damaged transmission system, and connecting axle or motor are brought adverse influence to the transmission side transmission of milling train; If this axial force is to the fore side transmission of milling train, then because the roll shifting hydraulic cylinder travel is limited, after the stroke surplus uses up, axial force can't obtain unloading, make the roll shifting device bear excessive axial load, cause the roll shifting device to damage easily, even cause serious production accident.When the roll shifting device broke down, dismounting is difficulty relatively, and needs the equipment of dismounting also many, and dismounting and the time of installing are long.
2, the clamp fluid pressure drive device of existing roll shifting device is typically provided with two, so the equipment cost height, the matched tube structure complexity, and maintenance cost is higher.
3, because in existing roll shifting device, the mounting groove of clamp is positioned at the centerline LL of clamp ' on, one end of the rotation preventing device of existing roll shifting device is installed on the centerline LL of described clamp ' on, cause the rotation arm of force of rotation preventing device shorter, thereby rotation preventing device working sections size is increased.
The utility model content
The purpose of this utility model provide a kind of can in time discharge excessive axial load, protection roll shifting device, equipment and maintenance cost is low, anti-rotation is effective, can quick-replaceable operation roll of mill roll shifting device.
For achieving the above object, a kind of operation roll of mill roll shifting device that the utility model proposes, be arranged with at least two described operation roll of mill roll shifting devices that are packed in the bearing block end respectively at the milling train fore side, in the axis both sides of operation roll of mill, described roll shifting device comprises: the roll shifting hydraulic cylinder, one end of described roll shifting hydraulic cylinder is fixed on the frame of described milling train, and a piston rod protrudes out the other end of described roll shifting hydraulic cylinder; The roll shifting moving assembly, the described bearing block of energy clamping end, this roll shifting moving assembly can be set on the outer wall of described roll shifting hydraulic cylinder slidably, described piston rod is connected with described roll shifting moving assembly by the breaker bolt assembly of energy dismounting, and described piston rod can drive the outer wall slip of described roll shifting moving assembly along described roll shifting hydraulic cylinder; Described breaker bolt assembly is provided with at least one easy fracture portion.
Aforesaid operation roll of mill roll shifting device, wherein, described breaker bolt assembly comprises along described piston rod to the bolt body that is provided with, one end and the described piston rod of described bolt body are affixed, its other end is installed with connector, described roll shifting moving assembly is connected by described connector with described piston rod, and described easy fracture portion is the necking part that is arranged on the described bolt body, and the diameter of this necking part is less than the diameter of described bolt body.
Aforesaid operation roll of mill roll shifting device wherein, is provided with the disassembling part that can match with spanner at described necking part on the bolt body of a side of described piston rod.
Aforesaid operation roll of mill roll shifting device, wherein, the cross section of described disassembling part is polygon, as: triangle, square, hexagon or circular both sides formed shape after cutting.
Aforesaid operation roll of mill roll shifting device, wherein, the ratio of the diameter of described necking part and the diameter of described bolt body is 0.55～0.9.
Aforesaid operation roll of mill roll shifting device, wherein, described breaker bolt assembly comprises along described piston rod to the bolt body that is provided with, one end and the described piston rod of described bolt body are affixed, its other end is installed with jam nut, described roll shifting moving assembly is connected by described jam nut with described piston rod, offers at least one side end face of described jam nut and cuts off groove, forms described easy fracture portion.
Aforesaid operation roll of mill roll shifting device, wherein, described jam nut is a T type nut, offers the described groove of cutting off at least one side end face of the protruding end of described T type nut.
Aforesaid operation roll of mill roll shifting device, wherein, described roll shifting moving assembly comprises: interior cover, can be set in slidably on the outer wall of described roll shifting hydraulic cylinder, be arranged with the protuberance that is used for the described bearing block of clamping end in described; Overcoat can be sleeved on slidably and puts in described; Gland is located at the outside of the cylinder mouth of described roll shifting hydraulic cylinder, and the connector of described breaker bolt assembly runs through in the installing hole of described gland; And described gland is fixedlyed connected with described interior cover; The load pad, establish and described piston rod and described gland between; Clamp is located in the draw-in groove that the end face of described overcoat and described protuberance end face form; Described piston rod can drive axis direction on outer wall two-way move of the protuberance of described gland, described overcoat, described clamp, described interior cover and described interior cover along the roll shifting hydraulic cylinder, and the end of described bearing block is clamped between described clamp and the described protuberance.
Aforesaid operation roll of mill roll shifting device, wherein, be provided with a clamp fluid pressure drive device between cover and the described clamp in described, this clamp fluid pressure drive device can drive described clamp and move, and described clamp fluid pressure drive device is positioned at a side of contiguous described clamp center line; Between described roll shifting hydraulic cylinder and described clamp, be provided with rotation preventing device, one end of described rotation preventing device is fixed in described roll shifting hydraulic cylinder, the other end runs through described interior cover and is connected in the mounting groove of the opposite side that is positioned at described clamp center line, and described rotation preventing device and described center line have the distance of regulation.
Another purpose of the present utility model provide a kind of can in time discharge excessive axial load, protection roll shifting device, anti-rotation effective, can quick-replaceable operation roll of mill roll shifting device.
The utility model has also proposed a kind of breaker bolt assembly, is used for operation roll of mill roll shifting device, it is characterized in that, described breaker bolt assembly is provided with at least one easy fracture portion.
Compared with prior art, the utlity model has following characteristics and advantage:
1, the bolt body of breaker bolt assembly of the present utility model is provided with at least one easy fracture portion, and this easy fracture portion can be the necking part on the bolt body, or at least one side end face of jam nut offers the easy fracture portion that groove forms of cutting off.When the value of the axial force that produces when operation roll of mill surpasses the setting axial load of necking part; the cutting off the groove place and can rupture of the necking part of bolt body or nut; make axial force too much obtain release; avoided because of of the damage of excessive axial force, played the effect of protection roll shifting device the roll shifting device.And, adopt breaker bolt or jam nut simple in structure, after accident condition carries out safeguard protection, can change operation fast, help timely prosthetic appliance, resume production, reduce the off-time, reduce the loss that stops production.
2, clamp fluid pressure drive device of the present utility model only is provided with one, and is located on the described clamp and centerline LL ' one side of contiguous described clamp, thereby can promote clamp moving radially along bearing block effectively.Compare with two decometer plate fluid pressure drive devices are set in the prior art, the utility model equipment cost is lower, matched tube structure is simple, maintenance cost is low.
3, for avoiding the roll shifting moving assembly to rotate around roll shifting cylinder outer wall, leave its normal operation position, the utility model is provided with rotation preventing device between roll shifting hydraulic cylinder and clamp, described rotation preventing device be installed on the described clamp and with the centerline LL of described clamp ' have a determining deviation, increased the rotation arm of force like this, thereby increased the rotating torque of rotation preventing device, improved the anti-rotating function of rotation preventing device; Simultaneously,, increase, so anti-rotation power can reduce accordingly, can reduce the working sections of rotation preventing device, thereby help optimizing apparatus arrangement and physical dimension owing to rotate the arm of force preventing to rotate required moment when identical.
Description of drawings
The following drawings only is intended to the utility model done and schematically illustrates and explain, does not limit scope of the present utility model.Wherein,
Fig. 1 is the main TV structure schematic diagram of existing operation roll of mill roll shifting device;
Fig. 2 is the side-looking structural representation of existing operation roll of mill roll shifting device;
Fig. 3 is that the A-A of Fig. 1 is to cross-sectional view;
Fig. 4 is that the B-B of Fig. 3 is to cross-sectional view;
Fig. 5 is an operation roll of mill roll shifting device sectional structure schematic diagram of the present utility model;
Fig. 6 is the perspective view of operation roll of mill roll shifting device of the present utility model;
Fig. 7 is that the C-C of Fig. 5 is to cross-sectional view;
Fig. 8 is the structural representation of first embodiment of breaker bolt assembly of the present utility model;
Fig. 9 is the structural representation of the bolt body among Fig. 8;
Figure 10 is that the D-D of Fig. 9 is to cross-sectional view;
Figure 11 is the structural representation of second embodiment of breaker bolt assembly of the present utility model;
Figure 12 is the structural representation of the 3rd embodiment of breaker bolt assembly of the present utility model;
Figure 13 is the structural representation of the 4th embodiment of breaker bolt assembly of the present utility model;
Mark the following drawings mark thereon in conjunction with the accompanying drawings:
Prior art:
100-roll shifting device; 101-roll shifting hydraulic cylinder; The 102-piston rod; The 103-plunger shaft; Cover in the 104-; The 105-overcoat; The 106-gland; The 107-clamp; The 108-thread segment; The 109-draw-in groove; 110-clamp fluid pressure drive device; The 111-protuberance; The 112-rotation preventing device; The 113-bolt; The 114-bolt; The 115-nut; 116-load pad; 201,202-bearing block; The 203-frame.
The utility model:
1-roll shifting device; The 2-bearing block; The 3-frame; 11-roll shifting hydraulic cylinder; 12-roll shifting moving assembly; Cover in the 121-; The 122-overcoat; The 123-gland; The 124-clamp; The 125-protuberance; The 126-draw-in groove; The 127-installing hole; The 13-piston rod; 14-breaker bolt assembly; The 141-bolt body; The 142-connector; The 143-necking part; 144-cuts off groove; The 145-nut; 146-load pad; The 147-disassembling part; The 148-jam nut; The 149-threaded ends; 5-clamp fluid pressure drive device; The 151-cylinder body; The two rods of 152-; The 153-end cap; The 16-rotation preventing device; The 17-bolt; The 18-bolt.
The specific embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast the description of drawings specific embodiment of the present utility model.
At least two operation roll of mill roll shifting devices of the present utility model are fixedly arranged on axis both sides, the milling train fore side frame of operation roll of mill symmetrically, are connected with the wing shape end of working roll bearing block.Roll shifting device of the present utility model comprises: the roll shifting hydraulic cylinder, and an end of described roll shifting hydraulic cylinder is fixed on the frame of described milling train, and a piston rod protrudes out the other end of described roll shifting hydraulic cylinder; The roll shifting moving assembly, the described bearing block of energy clamping end, this roll shifting moving assembly can be set on the outer wall of described roll shifting hydraulic cylinder slidably, described piston rod is connected with described roll shifting moving assembly by the breaker bolt assembly of energy dismounting, and described piston rod can drive the outer wall slip of described roll shifting moving assembly along described roll shifting hydraulic cylinder; Described breaker bolt assembly is provided with at least one easy fracture portion.When the axial load of being born when the breaker bolt assembly was set load greater than it, the breaker bolt assembly was discharged axial load by the fracture of easy fracture portion, played the effect of protection roll shifting device.
As a kind of optional embodiment of the utility model, please refer to Fig. 5,6, be respectively operation roll of mill roll shifting device sectional structure schematic diagram of the present utility model; And perspective view of the present utility model.As shown in the figure, roll shifting device 1 of the present utility model comprises: the roll shifting moving assembly 12 of roll shifting hydraulic cylinder 11 and the described bearing block of energy clamping 2 ends, described roll shifting hydraulic cylinder 11 is along the axial setting of described bearing block 2, the one end is fixed on by bolt 17 on the frame 3 of described milling train, with the axial load of bearing working roll in roll shifting power, the rolling process and the load of tumbling; Piston rod 13 protrudes out the other end of described roll shifting hydraulic cylinder.Described roll shifting moving assembly 12 can be set on the outer wall of described roll shifting hydraulic cylinder 11 slidably, makes roll shifting moving assembly 12 to slide along the outer wall of roll shifting hydraulic cylinder 11; Be connected by breaker bolt assembly 14 between described piston rod 13 and the described roll shifting moving assembly 12, make described piston rod 13 can drive described roll shifting moving assembly 12 and slide along the outer wall of described roll shifting hydraulic cylinder 11.Please in the lump referring to Fig. 8, be the structural representation of first embodiment of breaker bolt assembly of the present utility model.As shown in the figure, described breaker bolt assembly 14 comprises the bolt body 141 that axially is provided with along piston rod 13, one end of described bolt body 141 (threaded ends 149) is fixedlyed connected with described piston rod 13, be that described threaded ends 149 screws in the described piston rod 13, guaranteed the firm reliability that bolt body 141 is connected with piston rod 13.The other end of described bolt body 141 is installed with connector 142, by this connector 142 described roll shifting moving assembly 12 is connected with described piston rod 13.Like this, when piston rod 13 moves back and forth in the process along roll shifting hydraulic cylinder 11 inwalls, piston rod 13 drives described roll shifting moving assembly 12 by breaker bolt assembly 14 and slides along the outer wall of described roll shifting hydraulic cylinder 11.In the present embodiment, described connector 142 is a nut 145, and the screw of described nut 145 is fixedlyed connected with the end of described bolt body 141, makes nut 145 and bolt body 141 connect as one; Wherein, described easy fracture portion is the necking part 143 that is arranged on the described bolt body 141, and the diameter d of described necking part 143 is less than the diameter D of described bolt body 141.Like this, the axial force of working roll generation is passed to piston rod 13 by bearing block 2, roll shifting moving assembly 12, breaker bolt assembly 14.When the axial force of working roll during greater than the setting load of the necking part 143 of bolt body 141, this necking part 143 can rupture, thereby excessive axial force obtains discharging, and reaches the effect of protecting the roll shifting device.In the present embodiment, described bolt body 141 is provided with a necking part 143, but the utility model also is not limited thereto, can be according to the requirement of actual condition, diverse location at bolt body 141 is provided with two or more necking parts 143, as long as guarantee that bolt body 141 can rupture when bolt body 141 carries excessive axial force, reach the effect that discharges axial force and get final product.
Further, as shown in Figure 5, cover 121, overcoat 122, gland 123, load pad 146 and clamp 124 in described roll shifting moving assembly 12 comprises, cover 121 can be set on the outer wall of described roll shifting hydraulic cylinder 11 slidably in described, cover 121 is provided with the protuberance 125 that is used for the described bearing block of clamping 2 ends near a side of described frame 3 in described, and the opposite side of described interior cover 121 extends to the direction in contrast to frame 3; Described overcoat 122 can be sleeved on the described interior cover 121 slidably; Described gland 123 is located at the outside of described roll shifting hydraulic cylinder 11 cylinder mouths, and with described in cover 121 fixedly connected by bolt 18, make gland 123 and interior cover 121 connect as one; The connector 142 of described breaker bolt assembly 14 runs through in the installing hole 127 of described gland 123, and described connector 142 end faces are pressed on the end face of described gland 123.Make connector 142 be fixed in this installing hole 127; Described clamp 124 is located in the draw-in groove 126 that the end face of described overcoat 122 and described protuberance 125 end faces form.When roll shifting, roll shifting hydraulic cylinder 11 feeds pressure oil, piston rod 13 moves along hydraulic cylinder 11 inwalls, piston rod 13 drives gland 123, overcoat 122 and interior cover 121 moving axially along roll shifting hydraulic cylinder 11, protuberance 125 impeller-hub bearings 2 by clamp 124 and interior cover 121 are moved, and then have realized the roll shifting operation of milling train.
As a kind of optional embodiment of the utility model, as shown in Figure 5, the outer wall of described nut 145 is installed in the installing hole 127 with described gland 123, by breaker bolt assembly 14, piston rod 13 is connected with roll shifting moving assembly 12 like this; Be provided with load pad 146 between described nut 145 and described gland 123, with transfer function power, the while also can increase the lifting surface area with gland 123, reduces the bearing stress of gland, plays the effect of protection gland.But connector of the present utility model also is not limited to nut, also can adopt other rigid elements, as long as rigid element can firmly be connected with gland 123 with bolt body 141 respectively.
As shown in Figure 8; preferred embodiment a kind of as the utility model; the ratio of the diameter D of the diameter d of described necking part 143 and described bolt body 141 is 0.55～0.9; like this when bolt body 141 is subjected to excessive axial load and surpasses the default load of necking part 143; bolt body 141 can in time rupture; axial force too much is discharged in time, play the effect of protection roll shifting device.
Further, please refer to Fig. 9, be the structural representation of bolt body of the present utility model.As shown in Figure 9, on the bolt body 141 of a side of described piston rod 13, be provided with the disassembling part 147 that can match at described necking part 143 with spanner.Like this, after bolt body 141 fractures, can take out with the bolt body 141 of fracture and with nut 145, cooperate a section that bolt body 141 is stayed on the piston rod 13 to disassemble with disassembling part 147 by special spanner again, again load onto standby bolt body 141 and nut 145, realize the quick replacing of breaker bolt assembly, reached the effect of resuming production fast.Preferably, as shown in figure 10, both sides formed shape after cutting that the cross section of described disassembling part 147 is rounded.But the utility model also is not limited thereto, and the cross section of described disassembling part 147 also can be other polygonal shapes, as triangle, square or hexagon.As long as can guarantee that disassembling part can cooperate with spanner bolt body is disassembled from piston rod.
As the another kind of optional embodiment of the utility model, please refer to Figure 11, be the structural representation of second embodiment of breaker bolt assembly of the present utility model.As shown in the figure, described breaker bolt assembly 14 comprises the bolt body 141 that axially is provided with along described piston rod 13, one end and the described piston rod 13 of described bolt body 141 are affixed, its other end is installed with jam nut 148, described roll shifting moving assembly 12 is connected by described jam nut 148 with described piston rod 13, offer at least one side end face of described jam nut 148 and to cut off groove 144, thereby form described easy fracture portion.Break down in producing, when the working roll axial force was set axial load greater than jam nut 148, rupturing in groove 144 places of cutting off of jam nut 148, thereby discharges axial load, plays the effect of protection equipment.
Further, in the present embodiment, described jam nut 148 is a T type nut, and as shown in figure 11, the inner side end in the protruding end of T type nut offers the described groove 144 of cutting off.
Further, in the present embodiment, end face is provided with the removal hole that extends to jam nut 148 inside in the outside of jam nut 148, after jam nut 148 is cut off, take out and cut off posterolateral part, cooperate with removal hole with specific purpose tool, thereby taking-up jam nut 148 is stayed the part on the bolt body 141, again load onto standby jam nut 148, realized the quick replacing of breaker bolt assembly, reached the effect of resuming production fast.
As a kind of optional embodiment of the present utility model, the easy fracture portion of breaker bolt assembly of the present utility model can be arranged on the necking part 143 on the described bolt body 141 and offer at least one side end face of described jam nut 148 and cut off groove 144 and form described easy fracture portion.
Please refer to Figure 12, be the structural representation of the 3rd embodiment of breaker bolt assembly of the present utility model.As shown in the figure; the difference of second embodiment of present embodiment and breaker bolt assembly of the present utility model is; present embodiment offers the described groove 144 of cutting off at the outside end face of the protruding end of jam nut 148 (T type nut); make that cutting off groove 144 can in time rupture when the working roll axial force is set axial load greater than jam nut 148; discharge axial load, play the effect of protection equipment.
Please refer to Figure 13, be the structural representation of the 4th embodiment of breaker bolt assembly of the present utility model.As shown in the figure; the difference of second embodiment of present embodiment and breaker bolt assembly of the present utility model is; present embodiment all offers the described groove 144 of cutting off at the both sides end face of the protruding end of jam nut 148 (T type nut); making at least one cut off groove 144 can in time rupture when the working roll axial force is set axial load greater than jam nut 148; discharge axial load, play the effect of protection equipment.
Please refer to Fig. 7, for the C-C of Fig. 5 to cross-sectional view.As shown in the figure, cover 121 in described, be provided with between described overcoat 122 and the described clamp 124 and can drive the clamp fluid pressure drive device 15 that described clamp 124 moves horizontally along described bearing block, this clamp fluid pressure drive device 15 is two rod hydraulic means, comprise cylinder body 151 and two rods 152 that can stretch out by described cylinder body 151 two ends, wherein said cylinder body 151 is fixedlyed connected with interior cover 121, one end of two rods 152 can be resisted against on the clamp 124, the other end can be resisted against on the end cap 153 that is connected with clamp 124, can promote clamp 124 by moving back and forth of two rods 152 like this moves horizontally along roll shifting hydraulic cylinder 11, guarantee that clamp 124 can cooperate the end of clamp shaft bearing 2 with the protuberance 125 of interior cover 121, and clamp 124 and in the contact-making surface of cover 121 and bearing block 2 spigot surface can be as bearing block 2 oscilaltions the time, the needs that roll moves up and down when changing to satisfy the milling train opening degree.In the utility model, described clamp fluid pressure drive device 15 only is provided with one, and is positioned at the centerline LL of contiguous described clamp 124 ' downside, thus can promote clamp 124 moving horizontally effectively along bearing block 2.
Further, as shown in Figure 7, between described roll shifting hydraulic cylinder 11 and described clamp 124, be provided with rotation preventing device 16, one end of described rotation preventing device 16 is fixed in described roll shifting hydraulic cylinder 11, the other end run through described in cover 121 and be connected in and be arranged in described clamp centerline LL ' the mounting groove of opposite side, make described rotation preventing device 16 and described centerline LL ' has the distance of regulation.Be installed on the centerline LL of described clamp 124 with rotation preventing device 16 of the prior art ' on compare, because rotation preventing device 16 of the present utility model and centerline LL ' have a predetermined distance, make that rotation preventing device 16 is with respect to centerline LL ' have a bigger rotation arm of force, thereby increased the rotating torque of rotation preventing device, improved the anti-rotating function of rotation preventing device, thereby guaranteed that roll shifting moving assembly 12 can not rotate on roll shifting hydraulic cylinder 11.In the utility model, rotation preventing device 16 can be arranged on the clamp, with respect to centerline LL ' in the zone of clamp fluid pressure drive device 15 1 sides, as long as rotation preventing device and centerline LL ' have the sufficiently long rotation arm of force, reach the effect that prevents the rotation of roll shifting moving assembly and get final product.Preferably, described rotation preventing device 16 and described clamp fluid pressure drive device 15 are with respect to the centerline LL on the described clamp 124 ' be symmetrical arranged, have like this and be convenient to the advantage of processing and installing.
Operation principle of the present utility model is: roll shifting device 1 of the present utility model is installed in milling train fore side frame 3 outsides.When steel rolling is produced, realize roll shifting operation according to the needs of steel rolling process model by roll shifting device 1 to milling train fore side bearing block, concrete operation principle and process are identical with existing roll shifting device 1, no longer repeat at this.In the utility model, when the working roll of milling train because when being subjected to excessive external force effect generation roll breakage, moment will produce huge axial force.Axial force is passed to breaker bolt assembly 14 and piston rod 13 by bearing block 2, roll shifting moving assembly 12; because the diameter dimension of the necking part 143 of bolt body 141 is less; the axial setting load that this necking part 143 can bear is also less; because when excessive axial force surpasses aforementioned setting load; necking part 143 can rupture; thereby discharged excessive axial force; avoided damage to the roll shifting device; play protection roll shifting device; reduce the effect of maintenance cost, be specially adapted to the roll shifting operation of large-sized strip milling train.
Same, to cut off groove 144 owing to offer, thereby form described easy fracture portion at least one side end face of described jam nut 148, the axial setting load that this easy fracture portion can bear is also less.When excessive axial force surpassed aforementioned setting load, jam nut 148 can rupture cutting off groove 144 places, thereby has discharged excessive axial force, has avoided the damage to the roll shifting device, plays protection roll shifting device, reduces the effect of maintenance cost.
In addition, clamp fluid pressure drive device 15 of the present utility model only is provided with one, and is located on the described clamp 124 and centerline LL ' one side of contiguous described clamp 124, thereby can promote clamp 124 moving radially along bearing block 2 effectively.Compare with two decometer plate fluid pressure drive devices are set in the prior art, the utility model equipment cost is lower, matched tube structure is simple, maintenance cost is low.And, the utility model is provided with rotation preventing device 16 between frame 3 and clamp 124, and centerline LL with described clamp 124 ' have a determining deviation, increased the rotating torque of rotation preventing device like this, improved the anti-rotating function of rotation preventing device, thereby guaranteed that roll shifting moving assembly 12 can not rotate on roll shifting hydraulic cylinder 11.
Shown in Fig. 8,9, the utility model also provides a kind of breaker bolt assembly, is used for operation roll of mill roll shifting device.Described breaker bolt assembly 14 comprises bolt body 141, the link of one end of described bolt body 141 for being connected with the piston rod of roll shifting device, its other end is provided with the connector 142 that can match with the roll shifting moving assembly of described roll shifting device, be provided with at least one necking part 143 on described bolt body 141, the diameter d of described necking part 143 is less than the diameter D of described bolt body 141.Like this, the axial load of bearing when described bolt body 141 is when setting load, and necking part 143 can in time rupture, and to discharge excessive axial force, plays the effect of protection roll shifting device.
As the optional embodiment of another kind, breaker bolt assembly 14 of the present utility model comprises the bolt body 141 that axially is provided with along described piston rod 13, one end and the described piston rod 13 of described bolt body 141 are affixed, its other end is installed with jam nut 148, described roll shifting moving assembly 12 is connected by described jam nut 148 with described piston rod 13, offer at least one side end face of described jam nut 148 and to cut off groove 144, thereby form described easy fracture portion.Break down in producing, the working roll axial force is during greater than the setting load of jam nut 148, jam nut 148 cut off the fracture of groove 144 places, thereby discharge axial load, play the effect of protection equipment.
Structure, operation principle and the effect of the breaker bolt assembly of the operation roll of mill roll shifting device in breaker bolt assembly of the present utility model and the foregoing description are all identical, no longer repeat at this.
The above only is the schematic specific embodiment of the utility model, is not in order to limit scope of the present utility model.Any those skilled in the art, equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (10)
1. an operation roll of mill roll shifting device is arranged with at least two described operation roll of mill roll shifting devices that are connected with the working roll bearing block end respectively in milling train fore side frame, in the axis both sides of operation roll of mill, and described roll shifting device comprises:
The roll shifting hydraulic cylinder, an end of described roll shifting hydraulic cylinder is fixed on the frame of described milling train, and a piston rod protrudes out the other end of described roll shifting hydraulic cylinder;
The roll shifting moving assembly, the described bearing block of energy clamping end, this roll shifting moving assembly can be set on the outer wall of described roll shifting hydraulic cylinder slidably, described piston rod is connected with described roll shifting moving assembly by the breaker bolt assembly of energy dismounting, and described piston rod can drive the outer wall slip of described roll shifting moving assembly along described roll shifting hydraulic cylinder;
It is characterized in that described breaker bolt assembly is provided with at least one easy fracture portion.
2. operation roll of mill roll shifting device as claimed in claim 1, it is characterized in that, described breaker bolt assembly comprises along described piston rod to the bolt body that is provided with, one end and the described piston rod of described bolt body are affixed, its other end is installed with connector, described roll shifting moving assembly is connected by described connector with described piston rod, and described easy fracture portion is the necking part that is arranged on the described bolt body, and the diameter of this necking part is less than the diameter of described bolt body.
3. operation roll of mill roll shifting device as claimed in claim 2 is characterized in that, is provided with the disassembling part that can match with spanner at described necking part on the bolt body of a side of described piston rod.
4. operation roll of mill roll shifting device as claimed in claim 3 is characterized in that, the cross section of described disassembling part is triangular in shape, square, hexagon or circular both sides formed shape after cutting.
5. operation roll of mill roll shifting device as claimed in claim 2 is characterized in that the ratio of the diameter of described necking part and the diameter of described bolt body is 0.55～0.9.
6. operation roll of mill roll shifting device as claimed in claim 1, it is characterized in that, described breaker bolt assembly comprises along described piston rod to the bolt body that is provided with, one end and the described piston rod of described bolt body are affixed, its other end is installed with jam nut, described roll shifting moving assembly is connected by described jam nut with described piston rod, offers at least one side end face of described jam nut and cuts off groove, forms described easy fracture portion.
7. operation roll of mill roll shifting device as claimed in claim 6 is characterized in that, described jam nut is a T type nut, offers the described groove of cutting off at least one side end face of the protruding end of described T type nut.
8. as each described operation roll of mill roll shifting device in the claim 1 to 7, it is characterized in that described roll shifting moving assembly comprises:
In cover, can be set in slidably on the outer wall of described roll shifting hydraulic cylinder, be arranged with the protuberance that is used for the described bearing block of clamping end in described;
Overcoat can be sleeved on slidably and puts in described;
Gland is located at the outside of the cylinder mouth of described roll shifting hydraulic cylinder, and the connector of described breaker bolt assembly runs through in the installing hole of described gland; And described gland is fixedlyed connected with described interior cover;
The load pad, establish and described piston rod and described gland between;
Clamp is located in the draw-in groove that the end face of described overcoat and described protuberance end face form;
Described piston rod can drive protuberance one side shifting that described gland, described overcoat and described clamp overlap in described, the end of described bearing block is clamped between described clamp and the described protuberance.
9. operation roll of mill roll shifting device as claimed in claim 8, it is characterized in that, in described, be provided with a clamp fluid pressure drive device between cover and the described clamp, this clamp fluid pressure drive device can drive described clamp and move, and described clamp fluid pressure drive device is positioned at a side of contiguous described clamp center line; Between described roll shifting hydraulic cylinder and described clamp, be provided with rotation preventing device, one end of described rotation preventing device is fixed in described roll shifting hydraulic cylinder, the other end runs through described interior cover and is connected in the mounting groove of the opposite side that is positioned at described clamp center line, and described rotation preventing device and described center line have the distance of regulation.
10. a breaker bolt assembly is used for operation roll of mill roll shifting device, it is characterized in that, described breaker bolt assembly is provided with at least one easy fracture portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205246838U CN201841158U (en) | 2010-09-10 | 2010-09-10 | Roll shifting device for working roll of rolling mill and safe bolt component thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205246838U CN201841158U (en) | 2010-09-10 | 2010-09-10 | Roll shifting device for working roll of rolling mill and safe bolt component thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201841158U true CN201841158U (en) | 2011-05-25 |
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ID=44036062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205246838U Expired - Fee Related CN201841158U (en) | 2010-09-10 | 2010-09-10 | Roll shifting device for working roll of rolling mill and safe bolt component thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201841158U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947555A (en) * | 2010-09-10 | 2011-01-19 | 中冶京诚工程技术有限公司 | Rolling mill work roll shifting device and safety bolt component thereof |
| CN104476663A (en) * | 2014-12-07 | 2015-04-01 | 东岳机械集团有限公司 | Laterally oscillating type quick-changing plate groove milling device based on production of autoclaved aerated blocks |
| CN114309078A (en) * | 2022-01-04 | 2022-04-12 | 中冶京诚工程技术有限公司 | Axial roll shifting device and rolling mill |
-
2010
- 2010-09-10 CN CN2010205246838U patent/CN201841158U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947555A (en) * | 2010-09-10 | 2011-01-19 | 中冶京诚工程技术有限公司 | Rolling mill work roll shifting device and safety bolt component thereof |
| CN101947555B (en) * | 2010-09-10 | 2012-12-26 | 中冶京诚工程技术有限公司 | Rolling mill work roll shifting device and safety bolt component thereof |
| CN104476663A (en) * | 2014-12-07 | 2015-04-01 | 东岳机械集团有限公司 | Laterally oscillating type quick-changing plate groove milling device based on production of autoclaved aerated blocks |
| CN104476663B (en) * | 2014-12-07 | 2016-08-24 | 东岳机械集团有限公司 | A kind of based on the side pendulum-type quick change sheet material slotting attachment producing autoclaved aerated building block |
| CN114309078A (en) * | 2022-01-04 | 2022-04-12 | 中冶京诚工程技术有限公司 | Axial roll shifting device and rolling mill |
| CN114309078B (en) * | 2022-01-04 | 2023-11-24 | 中冶京诚工程技术有限公司 | Axial roller shifting device and rolling mill |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20140910 |
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| EXPY | Termination of patent right or utility model |