CN218079639U - Sliding spiral synchronous radial adjusting roller shaft sleeve - Google Patents

Abstract

The utility model discloses a sliding spiral synchronous radial adjustment roller shaft sleeve, which comprises a roller shaft sleeve and a roller shaft sleeve; the shaft sleeve comprises a shaft sleeve body, wherein 2 grooves are arranged in the inner cavity of the shaft sleeve body in a mirror symmetry manner, and radial through holes are arranged on the shaft sleeve body at positions corresponding to the grooves; the adjusting key plate is arranged in the groove in a clearance fit mode and used for abutting against the flat bearing surface of the journal; the radial screw rod penetrates through the shaft sleeve body, and the two ends of the radial screw rod are respectively provided with thread sections with opposite rotation directions and are respectively matched with one adjusting key plate in a thread connection mode. The device can meet the requirement of tight fit of small interference coupling between the roll journal and the roll shaft sleeve during rolling, can realize the convenient function of large-clearance loose fit quick insertion during maintenance operation, has the remarkable characteristics of simple structure, convenient maintenance, convenient and quick operation, higher working reliability, strong applicability and universality and has great industrial popularization value.

Description

Sliding spiral synchronous radial adjusting roller shaft sleeve

Technical Field

The utility model relates to a rolling technical field of steel especially relates to a synchronous radial adjustment roller axle sleeve of slip spiral.

Background

At present, the roll transmission side journal of domestic hot-rolled bar wire and section wire hot-wire rolling mills generally adopts a structural form of 'flat square/arc four-section combined type positioning bearing', and the overall dimension of the roll transmission side journal is designed into a structural form of 'double-arc two-plane' with mirror symmetry: the bearing is provided with 2 groups of flat square bearing surfaces which are bilaterally symmetrical and 2 groups of arc guide positioning surfaces which are vertically symmetrical, and the total is 4 sections. See in particular figures 1 and 2 for details of the roll.

The roll shaft neck and the roll shaft sleeve with the same section structure and the same external dimension as the inner hole are subjected to axial insertion type small-gap shaft hole matching through pushing/pulling of the rolling mill transverse hydraulic cylinder, and are combined together to form an axial insertion type combination body, and rolling torque is transmitted through the axial insertion type combination body to drive the free upper and lower rolls on the rolling mill frame to rotate circumferentially so as to bite and roll the hot rolled piece.

Therefore, in order to realize fast assembly and disassembly of the field rolling mill frame and improve the efficiency of groove and roll replacement in most domestic hot rolling production lines at present, a shaft hole matching structure with small gap between an inner hole of a rolling mill shaft sleeve and a roll journal is generally adopted: 2 groups of wear-resistant key plates which are symmetrically arranged in a mirror mode are designed on a roll shaft sleeve, the wear-resistant key plates are fixed in an inner cavity of the roll shaft sleeve through 2 groups of inner hexagon bolts respectively, the fit clearance between the working surface of the key plate and a flat plane symmetrical to a roll shaft neck is adjusted by increasing or decreasing the quantity and the thickness of adjusting gaskets on the lower portion of the key plate and the assembly surface of a groove in the inner cavity of the roll shaft sleeve, rolling torque is transmitted, meanwhile, small-clearance guide positioning is carried out through 2 sections of upper and lower arcs on the roll shaft sleeve and the roll shaft neck, and rapid disassembly and axial push-pull separation of an on-site rolling mill are achieved. The schematic view of the mill sleeve can be seen in fig. 3 and 4.

In the original design process, the fit clearance of different degrees (convenient for on-site rapid assembly and separation) exists in the flat square bearing area and the arc positioning area of the roller shaft neck and the roller shaft sleeve combination, so that in the rolling operation process, due to the existence of object rotation inertia, the axial insertion type combination inevitably causes the circumferential micro-motion rotary sliding of the passive roller shaft neck in the active roller shaft sleeve at the moment of synchronous transmission of torque, so that 2 groups of positioning arc lines and wear-resistant key plates in the inner hole of the roller shaft sleeve have different sliding wear, further the fit clearance of the shaft hole is further increased, the synchronous transmission precision of the rollers at the moment of steel biting of the upper roller and the lower roller is seriously influenced, the obvious difference of the instantaneous biting rotary line speed of the upper roller and the lower roller is caused, the process faults of unstable material and bending deformation of the outlet of the rolling mill are caused, and the process control of the hot-rolled type/bar materials with high added value and high-precision size requirements is particularly unfavorable for the shape and size precision control of the hot-rolled type/bar materials, the product appearance and the material yield are more serious problems to the safety influence on-site production of rolling operation personnel. A schematic illustration of rotational asynchrony can be seen in fig. 5.

Theoretically, the rolling process requires that the matching surfaces of the roll journal and the roll shaft sleeve are assembled very tightly, and large interference fit is adopted as much as possible to increase radial pressure, eliminate the fit clearance and improve the integral rigidity, the rotation synchronization precision and the stability of the axial insertion type assembly of the upper roll and the lower roll of the rolling mill. However, if the design of matching the roll journal with the inner hole of the roll shaft sleeve is only to meet the requirement of the theoretical rolling process, the high-rigidity and large-interference shaft hole is adopted for matching connection, which often results in the large integral rigidity of the 'axial plug-in type assembly' and the too tight matching precision, and is easy to cause the axial separation difficulty of the roll shaft sleeve from the rolling mill body, the roll journal and the train transmission system, during field maintenance or process roll change, and the axial separation of the hot radial gap from the roll journal can be realized only after the roll shaft sleeve is preheated to a certain temperature by using a hydraulic jack matched with flame for heating on the field.

To sum up, the existing national hot rolling type/bar line online rolling mill train field maintenance/roll change has more outstanding contradiction between the matching requirement of 'fast assembly and fast disassembly' of the roll journal and the roll shaft sleeve and the theoretical process scheme of 'zero clearance and high rigidity' during rolling, and a reasonable scheme which can simultaneously give consideration to both needs to be adopted to solve the field contradiction, so that the requirements of gapless, high rigidity and large interference fit of the theoretical rolling process during normal steel rolling operation can be met, and the action function of flexible and fast disassembly and assembly of large clearance on the maintenance roll change field can be realized. The problem is a common problem faced by domestic hot rolling production lines at present.

SUMMERY OF THE UTILITY MODEL

In order to solve the partial or whole technical problem that exists among the above-mentioned prior art, the utility model provides a synchronous radial adjustment roll axle sleeve of slip spiral. The technical scheme is as follows:

there is provided a sliding helical synchronous radial adjustment roll sleeve comprising: the bearing sleeve comprises a sleeve body, wherein 2 grooves are arranged in the inner cavity of the sleeve body in a mirror symmetry manner, and radial through holes are arranged on the sleeve body corresponding to the grooves; the adjusting key plate is arranged in the groove in a clearance fit mode and is used for abutting against the flat bearing surface of the journal; and the radial screw rod penetrates through the shaft sleeve body, and two ends of the radial screw rod are respectively provided with thread sections with opposite rotation directions and are respectively matched with one adjusting key plate in a thread connection mode.

In some optional modes, a first sliding copper sleeve is arranged in the first through hole, and one end of the radial screw rod penetrates through the first adjusting key plate and the first sliding copper sleeve in a threaded connection mode.

In some alternative implementations, a first circlip is provided within the first bore at an end of the first sliding copper sleeve.

In some alternative implementations, an end of the radial screw rod outside the first through hole is sleeved with a first locking nut.

In some optional implementations, a radial screw sleeve is sleeved at the other end of the radial screw rod, a second sliding copper sleeve is arranged in the second through hole, and the radial screw sleeve penetrates through the second adjusting key plate and the second sliding copper sleeve in a threaded connection manner.

In some alternative implementations, the radial screw sleeve and the radial screw rod are connected by a transverse nut taper pin.

In some alternative implementations, a second circlip is provided in the second bore at an end of the second sliding copper sleeve.

In some optional implementations, a portion of the radial screw rod located outside the second through hole is sleeved with a second lock nut.

In some optional implementation modes, the depth of the groove is 2mm greater than the thickness of the adjusting key plate, so that the radial sliding distance of the adjusting key plate on one side is 1-2mm.

In some optional implementation manners, both ends of the radial screw rod are provided with inner hexagonal grooves.

The utility model discloses technical scheme's main advantage as follows:

the utility model discloses a synchronous radial adjustment roll axle sleeve of slip spiral can be applicable to hot rolling production site rolling mill and the combination and the separation of train transmission system, roll axle journal and the little interference fit tightness complex requirement of roll axle sleeve when can satisfying the rolling, the convenient function of the quick cartridge of big clearance loose fit when can realizing again overhauling the operation, have simple structure, maintain convenient, convenient operation, swift showing characteristics, the operational reliability is higher, suitable for the commonality is strong, has the trade spreading value.

Drawings

The accompanying drawings, which are set forth herein, serve to provide a further understanding of the embodiments of the present invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are illustrative of the invention and do not constitute a limitation on the invention. In the drawings:

FIG. 1 is a schematic view of a prior art roll configuration;

FIG. 2 is a cross-sectional view of a journal of a prior art roll;

FIG. 3 is a front view of a prior art roll sleeve;

FIG. 4 is a side cross-sectional view of a prior art roll sleeve;

FIG. 5 is a schematic view of the prior art roll journal and roll sleeve assembly during operation with rotational slippage;

fig. 6 is a schematic structural view of a sliding spiral synchronous radial adjustment roller shaft sleeve according to an embodiment of the present invention;

fig. 7 is an assembly view of the sliding screw synchronous radial adjustment roller sleeve according to an embodiment of the present invention;

fig. 8 is a partial enlarged view of the sliding spiral synchronous radial adjustment roll shaft sleeve provided in an embodiment of the present invention at a first perforation;

fig. 9 is a partial enlarged view of the sliding spiral synchronous radial adjustment roll sleeve provided in an embodiment of the present invention at a second through hole;

fig. 10 is a front view of a sleeve body in a sliding helical synchronous radial adjustment roller sleeve according to an embodiment of the present invention;

fig. 11 is a side view of the sleeve body in the sliding helical synchronous radial adjustment roller sleeve according to an embodiment of the present invention;

fig. 12 is a schematic structural view of a first adjustment key plate in the sliding helical synchronous radial adjustment roller sleeve according to an embodiment of the present invention;

fig. 13 is a schematic structural view of a second adjustment key plate in the sliding helical synchronous radial adjustment roller bushing according to an embodiment of the present invention;

fig. 14 is a schematic structural view of a radial screw rod in the sliding screw synchronous radial adjustment roller sleeve according to an embodiment of the present invention;

fig. 15 is a schematic structural view of a radial spiral sleeve in the sliding spiral synchronous radial adjustment roller sleeve according to an embodiment of the present invention;

fig. 16 is a schematic structural view of a first sliding copper sleeve in a sliding helical synchronous radial adjustment roller sleeve according to an embodiment of the present invention;

fig. 17 is a schematic structural view of a second sliding copper sleeve in the sliding spiral synchronous radial adjustment roller shaft sleeve according to an embodiment of the present invention;

fig. 18 is a schematic structural view of a nut taper pin in a sliding spiral synchronous radial adjustment roller bushing according to an embodiment of the present invention;

fig. 19 is a schematic view of the working principle of the sliding spiral synchronous radial adjustment roller shaft sleeve according to an embodiment of the present invention;

fig. 20 is a schematic view illustrating an assembling process of the sliding spiral synchronous radial adjustment roller sleeve according to an embodiment of the present invention.

Description of reference numerals:

1-a shaft sleeve body, 101-a first groove, 102-a second groove, 103-a first through hole, 104-a second through hole, 2-a first adjusting key plate, 3-a second adjusting key plate, 4-a radial screw rod, 5-a radial screw sleeve, 6-a first sliding copper sleeve, 7-a first elastic retainer ring, 8-a first locking nut, 9-a second sliding copper sleeve, 10-a second elastic retainer ring, 11-a second locking nut and 12-a nut conical pin.

Detailed Description

To make the purpose, technical solution and advantages of the present invention clearer, the following description will be given with reference to the embodiments of the present invention and the accompanying drawings, in which the technical solution of the present invention is clearly and completely described. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

The technical solution provided by the embodiments of the present invention is described in detail below with reference to the accompanying drawings.

The embodiment of the utility model provides a synchronous radial adjustment roller axle sleeve of slip spiral has following characteristics: the device is used for combining and separating a rolling mill and a train transmission system on a hot rolling production site, can meet the requirement of small interference connection and tight fit of a roll journal and a roll shaft sleeve during rolling, can realize the convenient function of large-clearance loose fit quick plug-in mounting during maintenance operation, has the remarkable characteristics of simple structure, convenience and quickness in maintenance, convenience and quickness in operation, has higher working reliability and strong applicability and universality, and has industrial popularization value.

The embodiment of the utility model provides a synchronous radial adjustment of integral slip spiral rolls roller shell adopts the design of modularization unit, and the mirror is tight to the tight design of exempting from to wear of point symmetry clamp, and the pretightning force is applyed simultaneously to the double helix clamping mechanism of two sets of mirror symmetry designs, and two-way all operable adjustment avoids local unbalance loading, has higher reliability and commonality. The internal structure design of the device adopts a detachable modularization thought, the components such as the first adjusting key plate 2, the second adjusting key plate 3, the radial screw rod 4, the radial screw sleeve 5 and the like are all detachable adjusting components, and the components do not need to be replaced after being worn, and only the pretightening force needs to be adjusted to eliminate the fit clearance; the symmetrical clamping force of the mechanism has online linear adjustment and strong adaptability, completely eliminates the fit clearance between the roll journal and the roll shaft sleeve in the traditional scheme, can fully meet the requirements of high rigidity and high precision rotation synchronism rolling process of the upper roll and the lower roll of the rolling mill, is convenient for fast assembly and disassembly of the rolling mill and the roll shaft sleeve, improves the roll changing efficiency and reduces the labor intensity.

Further, as shown in fig. 6-13, the embodiment of the present invention provides a sliding spiral synchronous radial adjustment roller sleeve, which mainly comprises: the sleeve comprises a sleeve body 1, a first adjusting key plate 2, a second adjusting key plate 3, a radial screw rod 4, a radial screw sleeve 5 and other related accessories. The double-rotation-direction sliding spiral adjusting mechanism formed by connecting the radial screw rod 4 and the radial screw sleeve 5 through the nut taper pin 12 is compact in structure, large in bearing capacity, capable of bearing large rolling torque, convenient to adjust, beneficial to field quick assembly and disassembly, and simple, reliable, efficient and rapid in structure.

Furthermore, the flat square bearing area of the mirror symmetry of the inner hole 2 group of the shaft sleeve body 1 adopts a novel design structure of a first adjusting key plate 2 and a second adjusting key plate 3, and 2 sets of a first sliding copper sleeve 6 and a second sliding copper sleeve 9 are embedded on the side wall surface of the shaft sleeve body 1 in a matching way, and by utilizing the internal axial force in the double-rotation direction sliding spiral adjusting mechanism, symmetrical radial pressure is applied to the first adjusting key plate 2 and the second adjusting key plate 3 at the same time, so that the working surfaces of the first adjusting key plate 2 and the second adjusting key plate 3 are in tight interference fit with the flat square surface of the roll journal, the static friction value of the flat square bearing area is improved, and the rolling torque is transmitted.

Further, even if the above-mentioned cooperation working face is abraded and slipped because the axial force that the two slip spiral guiding mechanisms provided is not enough, also can increase the radial pressure of the flat square fitting face that is formed by first adjustment key board 2, second adjustment key board 3 in roll journal and the axle sleeve body 1 through adjusting radial hob 4 to improve its slip static friction value, satisfy the operating mode demand of the different moments of torsion of on-the-spot transmission, avoid frequently adjusting, changing the abrasion key board.

Further, if the fit dimension of the bearing area flat surface of the roll journal has large difference due to machining errors and the like, the clamping compensation can be realized by rotating the radial spiral rod 4, so that the roll journal and the shaft sleeve body 1 still keep enough large fit in the flat aspect, the sensitivity to the shape dimension error and the parallelism form and position tolerance of the roll journal is low, and the adaptability to the differential assembly of the field roll shape dimension is good.

Furthermore, the inner cavity of the shaft sleeve body 1 is designed by a scheme of 'double-arc clearance fit guiding and positioning', the designed fit clearance of an upper arc surface and a lower arc surface is controlled between 0.3mm and 0.4mm when the shaft sleeve is assembled with a roll shaft neck, the guiding and positioning functions of the original design are lost when the clearance is too large, the synchronous rotation rigidity is poor, and if the clearance is too small, the axial insertion type assembly formed by assembling and combining the roll shaft neck and the roll shaft sleeve is too tightly matched, so that the field assembly and disassembly are difficult.

Further, the utility model relates to an adopted respectively relatively independent dextrorotation hob and levogyration hob to pass through behind the 12 rigid couplings of nut taper pin on the motion principle, join in marriage the nut of screwing on about oneself separately again, 2 adjustment keypad promptly, what adopt is "the screw rod is rotatory, the drive mode of nut straight line slide", the inner chamber recess in the axle sleeve body 1 is equivalent to "the nut prevents that the favourable turn constructs", make first adjustment keypad 2, second adjustment keypad 3 can only slide along the rectangle cross section inner chamber recess lateral wall straight line in the axle sleeve body 1, and not rotatory thereupon.

In this embodiment, the first groove 101 and the second groove 102 are milled in the inner cavity of the sleeve body 1 in a mirror symmetry manner, and are respectively used for assembling the first adjustment key plate 2 and the second adjustment key plate 3, note that: the design width and the depth of the groove of the inner cavity of the shaft sleeve body 1 are slightly larger than the width and the thickness of the first adjusting key plate 2 and the second adjusting key plate 3, and the first adjusting key plate 2 and the second adjusting key plate 3 are in small clearance loose fit, so that the first adjusting key plate 2 and the second adjusting key plate 3 can be easily inserted along the axial direction of the side wall of the groove of the shaft sleeve body 1 and freely slide up and down. Meanwhile, a phi 44 stepped hole is drilled in the center of the groove in the inner cavity of the shaft sleeve body 1 and is used for respectively positioning and installing the first sliding copper sleeve 6 and the second sliding copper sleeve 9 in an embedded mode, and then the first elastic retainer ring 7 and the second elastic retainer ring 10 are respectively used for radially fixing the first sliding copper sleeve 6 and the second sliding copper sleeve 9, so that the first sliding copper sleeve 6 and the second sliding copper sleeve 9 are prevented from radially shifting and falling off in the first through hole 103 and the second through hole 104 of the shaft sleeve body 1.

The first adjustment key plate 2 and the second adjustment key plate 3 of the present embodiment are formed by omitting 2-M16 internal screw holes on the basis of the original roll collar key plate parts, and instead, M22x1.5 right-handed and M33x1.5 left-handed internal screw holes are respectively designed and processed in the center of the back of the first adjustment key plate and the second adjustment key plate, and are respectively matched with the radial screw rod 4 and the radial screw sleeve 5 in a screwing manner to form a left-handed and right-handed sliding screw pair.

Furthermore, the first sliding copper bush 6 and the second sliding copper bush 9 are made of ZCuAl10Fe3 bronze, and mainly play a role in supporting and sliding friction reduction during rotation adjustment of the radial screw and the radial screw sleeve 5, and the phi 36 inner holes of the first sliding copper bush and the second sliding copper bush must be subjected to finish machining turning and are provided with oil storage tanks for online grease lubrication and friction reduction. Particularly, an inner hole concave table of phi 32X3 is specially designed for an inner hole of the first sliding copper bush 6, and mainly plays a role in assembling and positioning the radial screw rod 4 during installation, and after the system is assembled, the end surface of a (phi 34-phi 36) X10 conical table on the radial screw rod 4 must be in contact with a phi 32X3 inner hole step surface on the first sliding copper bush 6, so that a key system radial positioning effect is played. The second sliding copper sleeve 9 mainly plays a role in supporting and sliding antifriction of the radial screw sleeve 5, and an online lubrication mode is adopted, but radial positioning is not needed.

Further, the radial screw rod 4 is a key load-bearing adjusting member of the structure of the present invention, and is a slender rod-shaped member, which is made of alloy steel 20CrMnTi and is heat-treated to improve the rigidity, strength and wear resistance thereof. The radial screw rod 4 is respectively provided with 2 sections of M22X1.5 right-handed external threads, the M22X1.5 external threads with conicity at the end part are used for tightly pressing the radial screw rod 4 and the radial screw sleeve 5 together after being screwed with the second locking nut 11, and the tooth side clearance matched with the screw thread pair is eliminated through axial prestress, so that the adjustment precision is improved; the other section of M22X1.5 external threads are used for driving the first adjusting key plate 2 to linearly slide back and forth along the groove of the inner cavity of the shaft sleeve body 1 after being screwed with the first adjusting key plate 2. Particularly, a section of cone frustum of (phi 34-phi 36) X10 is specially designed on the radial screw rod 4, so that positioning and guiding during assembly are facilitated, a plurality of groups of online lubricating oil channels are designed in the axial direction and the radial direction of the body, and especially 2 end faces of the body are respectively provided with an inner hexagonal groove for online adjustment, so that the radial screw rod can be selectively used.

Still further, radial spiral shell 5 is another key of the utility model discloses the structure bears the weight of the adjustment component, and it is the telescopic component of cavity design, and its hole is passed to radial hob 4 complete axial, and its outer wall has 3 parts to constitute: one part is designed with an M33X1.5 left-handed external thread which is used for rotationally matching the second adjustment key plate 3 and driving the key plate to linearly slide in a reciprocating manner, the other part of the phi 36 is in sliding friction clearance fit with the second sliding copper sleeve 9, the last section is designed with a phi 42X15 shaft shoulder, and the second locking nut 11 is used for tightly pressing the radial spiral sleeve 5 on the side wall of the shaft sleeve body 1. The shaft shoulder excircle of phi 42X15 on the radial helical casing 5 adopts the design of standard outer hexagonal, is convenient for its rotatory centre gripping when screwing in second adjustment keypad 3 and the circular oil groove of shoulder design that contacts with axle sleeve body 1 reduces frictional resistance, and its radial also designs to install multiunit oil duct additional in addition and is used for online grease lubrication.

Furthermore, the radial screw rod 4 and the radial screw sleeve 5 are both provided with a conical hole for mounting a nut taper pin 1210, and a nut of M8 is used for anti-loose and anti-thrust, so that the two are combined into a rigid connected double-rotation sliding screw body.

Further, after the radial screw rod 4 penetrates through the radial screw sleeve 5, the first locking nut 8 and the second locking nut 11 are respectively screwed at two ends of the radial screw rod 4 and used for axial rigid pre-tightening, and a rigid screw body formed by combining the radial screw rod 4 and the radial screw sleeve 5 is tightly connected with the shaft sleeve body 1 into a whole, so that a gap is eliminated.

To sum up, the embodiment of the utility model provides a synchronous radial adjustment roll axle sleeve of slip spiral, its on-the-spot concrete operation and adjustment step and action principle are as follows:

under a first working condition, during normal rolling production, the shaft sleeve body 1 needs to be tightly connected with the roll journal in an interference fit manner so as to reliably transmit rolling torque, and the first adjusting key plate 2 and the second adjusting key plate 3 need to tightly lock the flat square bearing surface of the roll journal.

Firstly, the shaft sleeve body 1 is rotated by a manual jigger, the groove of the inner cavity of the shaft sleeve body 1 is in a state of being vertical to the ground, and the first sliding copper bush 6 and the second sliding copper bush 9 which are rotatably matched with the radial screw rod 4 and the radial screw bush 5 are in a horizontal state parallel to the ground. The first adjusting key plate 2 and the second adjusting key plate 3 are axially inserted into the inner cavity groove of the shaft sleeve body 1 in a vertical state.

Secondly, the radial screw rod 4 is inserted into the inner hole of the first sliding copper bush 6 in the first through hole 103 of the shaft sleeve body 1 in a horizontal state, and the radial screw rod 4 is rotated clockwise, so that the external thread of the conical end surface M22X1.5 of the radial screw rod 4 is screwed into the corresponding internal thread hole on the first adjusting key plate 2, and the conical end surface of the phi 18 is flush with or slightly recessed from the working surface of the first adjusting key plate 2, thereby preventing the roll journal from being blocked when being inserted into the shaft sleeve body 1. Meanwhile, another key adjusting component, namely the radial screw sleeve 5, is horizontally inserted into the inner hole of the second sliding copper sleeve 9 of the second through hole 104 of the shaft sleeve body 1, and the radial screw sleeve 5 is rotated anticlockwise, so that the phi 42X15 step surface with an annular oil groove at one end of the radial screw sleeve 5 is in contact with the outer side wall of the shaft sleeve body 1, at the moment, the external thread of the levorotatory M33X1.5 at the other end of the radial screw sleeve 5 is screwed into the corresponding internal thread hole on the second adjusting key plate 3, and the end surface of the levorotatory M33X1.5 is kept to be level or slightly lower than the working surface of the second adjusting key plate 3, so that the phenomenon that a roll journal is blocked when being inserted into the shaft sleeve body 1 is prevented.

And thirdly, the roller is transversely translated under the pushing of the rolling mill transverse hydraulic oil cylinder, so that the shaft neck of the roller is axially and horizontally inserted into the inner hole of the shaft sleeve body 1 and is assembled in place. At the moment, the center of the radial through hole of the phi 36 on the roll journal is superposed with the central line of the inner screw hole of the M22X1.5/M33X1.5 on the first adjusting key plate 2 and the second adjusting key plate 3, so that the next step of radial spiral rods 4 can radially penetrate through the flat square bearing surface of the roll journal. Further clockwise rotating the radial screw rod 4 to enable the M22X1.5 external threads of the conical end face to completely penetrate through the working face of the first adjusting key plate 2 and continue to radially penetrate through the radial through hole of the phi 36 on the roll journal and finally be inserted into the inner hole of the radial screw sleeve 5 until the locating frustum end face of the phi 34X10 on the radial screw rod 4 is in contact with the phi 32 locating concave table on the first sliding copper sleeve 6, at the moment, the radial screw rod 4 penetrates through the flat square bearing face of the roll journal and then is inserted into the inner hole of the radial screw sleeve 5 and finally penetrates out of the big phi 42 end face of the radial screw sleeve 5, the M22X1.5 end of the radial screw rod 4 is exposed outside the radial screw sleeve 5, and the radial through taper pin hole central line of the outer surface of the radial screw rod coincides with the taper pin hole central line on the radial screw sleeve 5.

Finally, the nut taper pin 12 is inserted into the taper pin hole of the radial screw rod 4 and the radial screw sleeve 5, the nut of M8 is used for preventing looseness and stopping backing, so that the two are combined into a double-rotation sliding screw adjusting mechanism with left-right-rotation threads, and the adjusting mechanism can rotate synchronously. And then, a second locking nut 11 is superposed and rotationally matched on a conical external thread with the length of 24mm at one end M22X1.5 of the radial screw rod 4 to be contacted with the excircle end face of the phi 42 on the radial screw sleeve 5, so that the lower bottom surface of the phi 42X15 with an annular oil groove of the radial screw sleeve 5 is pressed with the outer surface of the shaft sleeve body 1.

Then, an inner hexagon wrench is inserted into a specially designed inner hexagon groove on one side end face of the radial screw rod 4 and is rotated clockwise (note: the upper and lower 'inner hexagon grooves' of the radial screw rod 41 can be adjusted, and the same effect and efficacy are achieved, when the radial screw rod 4 is independently rotated and adjusted, the radial screw sleeve 5 can be synchronously driven under the connection of the round nut taper pin 12, so that the two synchronously and synchronously rotate in the same direction together). At the moment, the first adjusting key plate 2 and the second adjusting key plate 3 which are arranged in the groove of the inner cavity of the shaft sleeve body 1 in a mirror symmetry mode can reversely and synchronously slide linearly in the groove of the inner cavity of the shaft sleeve body 1 along the axial lines of the radial screw rod 4 and the radial screw sleeve 5 under the action of axial thrust in the double-rotation sliding screw, and the radial linear distance between the working surfaces of the first adjusting key plate 2 and the second adjusting key plate 3 is increased and decreased, so that the radial clamping of the flat square bearing surface of the roll journal is realized. The magnitude of the clamping force is completely dependent on the magnitude of the external moment acting on the radial screw rod 4. Meanwhile, the axial elastic deformation, stretching and pre-tightening of the double-rotation-direction sliding screw mechanism are realized through the external torque acting on the radial screw rod 4 and the radial screw sleeve 5, the tooth side clearance matched with the screw thread pair is eliminated, and the clamping rigidity and reliability of the two adjusting key plates are improved. After the pre-tightening adjustment is finished, when applying external moment to keep the radial screw rod 4 and the radial screw sleeve 5 to deform in the elastic axial direction, 2 locking nuts are immediately screwed on the radial screw rod 4, and the lower bottom surfaces of the locking nuts are tightly contacted and locked with the outer wall of the shaft sleeve body 1, so that the locking nuts are prevented from loosening. At the moment, the working surfaces of the 2 groups of adjusting key plates can firmly and reliably contact and tightly hold the flat square bearing surface of the roll journal, large excessive tight connection between the two is realized, the rolling torque output by the speed reducer is synchronously and accurately transmitted, when the rolling mill rotates and works, enough bidirectional symmetrical clamping force is provided by virtue of the internal axial pretightening force in the double-rotation direction sliding spiral mechanism in the shaft sleeve body 1, the critical static friction force value on the flat square bearing surface of the roll journal is improved, so that an 'axial insertion type assembly' formed by combining the roll journal and the shaft sleeve body 1 keeps tight fit connection and enough rotation rigidity, and the rolling torque is transmitted.

After all the pre-tightening adjusting steps are completed, the machine can be started for production, and the roller can transmit rolling torque through the side wall of the groove in the inner cavity of the shaft sleeve body 1 and the cross universal spindle connected to the shaft sleeve body 1 under the clamping of the two adjusting key plates.

In the second working condition, when production stoppage maintenance or roll replacement is met, the roll journal needs to be axially pulled out and separated from the shaft sleeve body 1.

Firstly, manually turning the shaft sleeve body 1 to enable the radial screw rod 4 and the radial screw sleeve 5 to be in a horizontal state relative to the ground, enabling the two adjusting key plates to be in a vertical state relative to the ground, then rotating anticlockwise to loosen 4 locking nuts at two ends of the radial screw rod 4, unloading axial pre-tightening force superposed on the radial screw rod 4 and the radial screw sleeve 5 to enable the radial screw rod 4 and the radial screw sleeve 5 to eliminate internal elastic force and elastic deformation, and simultaneously removing the nut conical pin 12.

Secondly, the radial screw rod 4 is pulled outwards along the radial direction of the shaft sleeve body 1 while continuing to rotate anticlockwise, the radial screw rod 4 is screwed out along the inner hole of the radial screw sleeve 5 radially by means of the internal axial force of the thread pair in the sliding screw mechanism until the phi 18 conical end face of the radial screw rod 4 is flush with or slightly recessed from the working face of the radial adjusting key plate, so that the radial separation of the working face of the first adjusting key plate 2 and the flat square bearing face of the roll journal contacted with each other is realized, and the radial screw rod 4 is separated from the phi 36 through hole of the roll journal. Subsequently, the external hexagonal shoulder of the radial screw sleeve 5 is held by a monkey wrench and rotated clockwise, so that the external thread of the left-handed m33x1.5 at the other end of the radial screw sleeve 5 is screwed out of the corresponding internal thread hole on the second adjustment key plate 3 and the end surface thereof is kept flush with or slightly recessed from the working surface of the second adjustment key plate 3. At the moment, the working surface of the second adjusting key plate 3 can be separated from the other flat bearing surface of the roller shaft neck which is in contact with the working surface, so that the matching of the roller shaft neck and the shaft hole of the shaft sleeve body 1 is changed from large interference fit during rolling into large clearance fit during roller changing, and a transverse oil cylinder of the rolling mill can conveniently pull out and separate the roller from the shaft sleeve body 1 flexibly and axially. Note that: the radial screw rod 4 and the radial screw sleeve 5 do not need to be screwed out of the internal threaded holes of the first adjusting key plate 2 and the second adjusting key plate 3, and the first adjusting key plate 2, the second adjusting key plate 3, the radial screw rod 4 and the radial screw sleeve 5 are prevented from radially falling off along the shaft sleeve body 1 as long as the radial screw rod 4 and the radial screw sleeve 5 are rotated to slightly avoid 2 flat square bearing surfaces of the shaft neck of the roller, and the process preparation is provided for the pre-tightening and clamping of a new shaft neck of the roller which is axially inserted into the shaft sleeve of the roller again after the roller of a subsequent rolling mill is replaced, the roller replacing time is shortened, and the roller replacing efficiency is improved.

And finally, the flat square bearing surface of the roll journal is separated from the working surface of the adjusting key plate in the shaft sleeve body 1, a fit clearance is formed between the flat square bearing surface and the working surface of the adjusting key plate, the original interference fit state is broken, a loose fit with a large clearance is formed, the axial pulling-out of a rolling mill frame is facilitated, the flat square bearing surface is separated from a train transmission system, and the roll changing action is completed. The rolling mill can be axially pulled out and separated from the inner hole of the shaft sleeve body 1 by utilizing the rolling mill transverse hydraulic cylinder to complete the roll changing action, and the preparation of the working procedure is made for the next axial insertion and assembly of the rolling mill.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. The utility model provides a slip spiral synchronous radial adjustment roll axle sleeve which characterized in that includes:

the bearing sleeve comprises a sleeve body, wherein 2 grooves are arranged in the inner cavity of the sleeve body in a mirror symmetry manner, and radial through holes are arranged on the sleeve body corresponding to the grooves;

the adjusting key plate is arranged in the groove in a clearance fit mode and is used for abutting against the flat bearing surface of the journal;

and the radial screw rod penetrates through the shaft sleeve body, and two ends of the radial screw rod are respectively provided with thread sections with opposite rotation directions and are respectively matched with one adjusting key plate in a thread connection mode.

2. The sliding helical synchronous radial adjustment roll sleeve of claim 1, wherein a first sliding copper sleeve is disposed within the first bore, and wherein one end of said radial helical rod is threaded through the first adjustment key plate and said first sliding copper sleeve.

3. The sliding helical synchronous radially adjusting roll sleeve of claim 2, wherein said first bore has a first circlip disposed at an end of said first sliding copper sleeve.

4. The sliding helical synchronous radial adjustment roll sleeve of claim 3, wherein a first locking nut is sleeved on an end of said radial helical rod outside said first through hole.

5. The sliding helical synchronous radial adjustment roll sleeve as claimed in claim 4, wherein the radial helical rod is sleeved with a radial helical sleeve at the other end, a second sliding copper sleeve is disposed in the second through hole, and the radial helical sleeve passes through the second adjustment key plate and the second sliding copper sleeve in a threaded connection.

6. The sliding helical synchronous radial adjustment roll collar of claim 5, wherein said radial helical collar is connected to said radial helical shank by a transverse nut taper pin.

7. The sliding helical synchronized radial adjust roll sleeve of claim 6, wherein said second bore has a second circlip disposed at the end of said second sliding copper sleeve.

8. The sliding helical synchronous radial adjustment roll sleeve of claim 7, wherein a second lock nut is sleeved on the radial helical rod outside the second through hole.

9. The sliding helical synchronous radial adjustment roller bushing of claim 1, wherein said groove depth is 2mm greater than the thickness of said adjustment key plate, such that the radial sliding distance of a single side of said adjustment key plate is 1-2mm.

10. The sliding helical synchronous radial adjustment roll sleeve of claim 1, wherein both ends of said radial helical rod are provided with a hexagonal socket.

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