阅读说明：本技术 轧机辊缝调整机构及调整方法 (Rolling mill roll gap adjusting mechanism and adjusting method ) 是由 郭显平 黄重陶 刘建梅 陈连运 于 2020-11-30 设计创作，主要内容包括：本发明属于轧机设备领域,涉及一种轧机辊缝调整机构及调整方法,包括拉杆机构与压下机构；所述拉杆本体安装在拉杆机构内部；还包括设置在压下机构上的蜗轮,所述蜗轮与所述拉杆本体间隙布置；还包括套设在蜗轮上的锁紧装置,通过锁紧装置固定或分离所述拉杆本体与所述蜗轮；还包括设置在拉杆本体上的轴承座。本发明利用弹性变形原理有效地将轧机的拉杆机构与辊缝调节装置紧密连接,便于调整各组拉杆的相对轴向尺寸、拉杆机构与辊缝调节装置的相对转角,从而实现两轧辊辊缝的高精度装配。具有加工容易、制造成本低、调校方便、容易保证多个拉杆本体传动的同相位性等诸多优点。(The invention belongs to the field of rolling mill equipment, and relates to a rolling mill roll gap adjusting mechanism and an adjusting method, wherein the rolling mill roll gap adjusting mechanism comprises a pull rod mechanism and a pressing mechanism; the pull rod body is arranged in the pull rod mechanism; the worm wheel is arranged on the pressing mechanism, and the worm wheel and the pull rod body are arranged in a clearance mode; the pull rod comprises a pull rod body and a worm wheel, and is characterized by further comprising a locking device sleeved on the worm wheel, wherein the pull rod body and the worm wheel are fixed or separated through the locking device; the pull rod comprises a pull rod body and a bearing seat arranged on the pull rod body. The invention effectively and tightly connects the pull rod mechanism of the rolling mill with the roll gap adjusting device by utilizing the elastic deformation principle, and is convenient for adjusting the relative axial size of each group of pull rods and the relative rotation angle of the pull rod mechanism and the roll gap adjusting device, thereby realizing the high-precision assembly of the roll gap of two rolls. The multi-rod transmission mechanism has the advantages of easiness in processing, low manufacturing cost, convenience in adjustment and calibration, easiness in ensuring the same phase of transmission of a plurality of pull rod bodies and the like.)

1. The rolling mill roll gap adjusting method is characterized in that a locking ring is arranged between a pull rod and a gear, and the load transmission of the non-key connection of the pull rod and the gear is realized through the friction force exerted by the extrusion of the locking ring.

2. The rolling mill roll gap adjustment method of claim 1, wherein the tie rod end is a plain shaft and the gear bore is a plain bore.

3. The rolling mill roll gap adjusting mechanism is characterized by comprising a pull rod mechanism and a pressing mechanism which are arranged independently; the pull rod body is limited and arranged in the pull rod mechanism and is rotationally connected with the pull rod mechanism; the worm gear is arranged in a matching manner with the pull rod body and is rotatably arranged on the pressing mechanism, and the worm gear is sleeved outside the pull rod body and is arranged in a clearance manner with the pull rod body; and the worm wheel is provided with a locking device for applying radial force to the worm wheel.

4. The mill roll gap adjustment mechanism of claim 3, wherein the tie rod body is an optical axis.

5. The rolling mill roll gap adjustment mechanism of claim 3 wherein the locking means comprises a locking ring that is radially retractable along the worm gear under force.

6. The rolling mill roll gap adjustment mechanism of claim 5 wherein the lock ring has first and second mating surfaces on the outside of the lock ring with a common intersection point, the intersection point of the first and second mating surfaces being convexly disposed on the side of the lock ring away from the worm gear.

7. The rolling mill roll gap adjustment mechanism as claimed in claim 6, further comprising a base and a flange provided outside the lock ring, the base being provided with a third mating surface matching the first mating surface; a fourth matching surface matched with the second matching surface is arranged on the flange; the base is connected with the flange through a connecting unit, and the gap between the base and the flange is adjusted through the connecting unit, so that the locking force of the locking ring is adjusted.

8. The rolling mill roll gap adjustment mechanism as claimed in claim 6 or 7, wherein the first mating surface and the second mating surface are flat surfaces or arc surfaces.

9. The rolling mill roll gap adjustment mechanism of claim 6 or 7, wherein the first mating surface and the second mating surface are planar and the locking ring is of a "double-tapered" configuration.

10. The rolling mill roll gap adjusting mechanism as claimed in claim 3, further comprising a bearing seat disposed on the pull rod body, wherein the worm gear rotates to drive the pull rod body to rotate axially, thereby driving the bearing seat to move along the extending direction of the pull rod body.

Technical Field

The invention belongs to the field of rolling mill equipment, and relates to a rolling mill roll gap adjusting mechanism and an adjusting method.

Background

The parallelism of the roll gap of the rolling mill is determined by the final assembly parallelism of the upper roll and the lower roll of the rolling mill, so that the high-precision equal-height installation of bearing blocks at two axial sides of the roll is the most efficient and concise method for ensuring the parallelism of the roll. The roller surface parallelism of the roller after being adjusted to the final use position at the original installation position is realized by synchronously outputting the roller surface parallelism to the machine core lifting mechanism through the roller gap adjusting device, and the non-phase connection and the synchronous output of the roller gap adjusting device and the machine core are main conditions for ensuring the parallelism of the roller after adjustment.

After the levelness and the symmetry of the roller are adjusted, the pull rods are always in different phases, the phases of the pressing mechanisms are relatively fixed, the pull rods need to be rotated to be matched with the pressing mechanisms, the equal-height states of the pull rods, the bearing blocks on two sides of the roller are damaged, the bearing blocks on the same side can be opened or retracted along with the rotation of the pull rods in the equal-height mode, and the levelness error of the roller is large.

Because the gear matching position at the joint of the pull rod and the screw-down mechanism is slender, the key slot in the gear is difficult to process, the manufacturing cost is higher, the phase error also exists in the pull rod processing, when the pull rod is assembled with the screw-down mechanism, the phase of the pull rod needs to be adjusted, the high-altitude states of a roller bearing seat are damaged, and the roller installation parallelism is difficult to guarantee.

Disclosure of Invention

In view of the above, the present invention provides a roll gap adjusting mechanism and an adjusting method for a rolling mill, which solve the problems of high manufacturing difficulty, difficult adjustment and low precision of the rolling mill, and at the same time, can reduce the processing cost and improve the production efficiency.

In order to achieve the purpose, the invention provides the following technical scheme:

the roll gap adjusting method of the rolling mill is characterized in that a locking ring is arranged between a pull rod and a gear, and the load transmission of the non-key connection of the pull rod and the gear is realized through the friction force exerted by the extrusion of the locking ring.

Optionally, the end of the pull rod is an optical axis, and the inner hole of the gear is an unthreaded hole.

The rolling mill roll gap adjusting mechanism comprises a pull rod mechanism and a pressing mechanism which are arranged independently; the pull rod body is limited and installed in the pull rod mechanism and is rotationally connected with the pull rod mechanism; the worm gear is arranged in a matching manner with the pull rod body and is rotatably arranged on the pressing mechanism, and the worm gear is sleeved outside the pull rod body and is arranged in a clearance manner with the pull rod body; the locking device is sleeved on the worm wheel and used for applying radial force to the worm wheel.

Optionally, the pull rod body is an optical axis.

Optionally, the locking device comprises a locking ring, and the locking ring contracts along the radial direction of the worm wheel under a stressed state.

Optionally, the outer side of the lock ring has a first mating surface and a second mating surface which share a common intersection, and the intersection of the first mating surface and the second mating surface is convexly disposed on a side of the lock ring away from the worm wheel.

Optionally, the locking device further comprises a base and a flange which are arranged on the outer side of the locking ring, and a third matching surface matched with the first matching surface is arranged on the base; a fourth matching surface matched with the second matching surface is arranged on the flange; the base is connected with the flange through a connecting unit, and the gap between the base and the flange is adjusted through the connecting unit, so that the locking force of the locking ring is adjusted.

Optionally, the first mating surface and the second mating surface are planes or arc surfaces.

Optionally, the connection unit is a connection screw.

Optionally, a plurality of screw holes are evenly distributed on the base, bolt holes matched with the screw holes are distributed on the flange, and the connecting screws penetrate through the flange and are connected to the base.

Optionally, the first mating surface and the second mating surface are both planar, and the locking ring is in a "double-cone" structure.

Optionally, a step surface for mounting the locking ring is arranged on the outer side of the worm wheel.

Optionally, the pull rod comprises a bearing seat arranged on the pull rod body, the worm gear rotates to drive the pull rod body to rotate axially, and then the bearing seat is driven to move along the extending direction of the pull rod body.

The invention has the beneficial effects that:

the invention effectively and tightly connects the pull rod mechanism of the rolling mill with the roll gap adjusting device by utilizing the elastic deformation principle, and is convenient for adjusting the relative axial size of each group of pull rods and the relative rotation angle of the pull rod mechanism and the roll gap adjusting device, thereby realizing the high-precision assembly of the roll gap of two rolls. The multi-rod transmission mechanism has the advantages of easiness in processing, low manufacturing cost, convenience in adjustment and calibration, easiness in ensuring the same phase of transmission of a plurality of pull rod bodies and the like.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the assembly of the tie rod;

FIG. 3 is a phase diagram of a prior art flat key connection;

FIG. 4 is a phase diagram of a prior art spline connection;

fig. 5 is a phase diagram of the present invention.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.

Referring to fig. 1-5, the reference numbers in the figures refer to the following elements: the device comprises a pull rod mechanism 1, a pull rod body 2, a pressing mechanism 3, a worm wheel 4, a lock ring 5, a base 6, a flange 7 and a connecting screw 8.

Please refer to fig. 2-4, which illustrate the related art related to the present invention. As shown in fig. 2, the conventional short stress path rolling mill is provided with 4 pull rods, the pull rods are of an integral structure, the tops of the pull rods are of a spline or flat key structure, the spline is matched with a key groove of a screw-down mechanism, and worm wheels of the screw-down mechanism can drive all key-type pull rods to rotate simultaneously. The right-handed nut and the left-handed nut respectively control four directions of an upper roller and a lower roller, and the levelness of the rollers and the symmetry degree of the rolling center line can be adjusted by rotating a single pull rod; when the screw-down mechanism drives all the pull rods to rotate simultaneously, the upper and lower rollers can be simultaneously far away from or close to a rolling line, so that the roll gap adjusting function of the rolling mill is realized.

Referring to fig. 3, the flat key has the worst in-phase adjustability, and can be assembled only by rotating at least 90 degrees; referring to FIG. 4, the spline has better alignment adjustability than a flat spline, and can be assembled by rotating 1/2 teeth. No matter the flat key or the spline needs to accurately control the machining position of the key groove, and the key groove needs to be assembled according to the orientation shown by the phase diagram. In order to meet the requirements, additional tooling and fixtures are often required to be manufactured, and the tooling and the fixtures have extremely poor universality and serious resource waste.

The invention relates to a rolling mill roll gap adjusting mechanism, which comprises a pull rod mechanism 1, a pressing mechanism 3 and a locking device; the top of the pull rod body 2 is an optical axis which is arranged in the pull rod mechanism 1 and is used for being connected with the pressing mechanism 3; the worm wheel 4 is arranged in the pressing mechanism 3 and can be connected with the pull rod body 2 in a locking way; the locking device is composed of a locking ring 5, a base 6, a flange 7 and a connecting screw 8 and is arranged on the step surface of the pressing mechanism 3. The locking device enables the pull rod body 2 and the worm wheel 4 to be locked or unlocked so as to achieve the effect of locking or unlocking the pull rod mechanism 1 and the pressing mechanism 3, and the pressing mechanism 3 can drive the pull rod mechanism 1 to transmit after being locked.

Specifically, when the connecting screw 8 is rotated to drive the flange 7 to approach the base 6, the third matching surface and the fourth matching surface on the base 6 and the flange 7 are pressed tightly on the first matching surface and the second matching surface on the locking ring 5, so that the locking ring 5 is forced to contract inwards, the locking ring 5 is pressed inwards at the same time, the upper end of the worm wheel 4 is contracted inwards to be connected with the pull rod body 2, and the worm wheel 4 and the pull rod body 2 can generate enough friction force to lock the two together by further rotating the connecting screw 8; the reverse rotation connects screw 8, and worm wheel 4, catch 5 produce reverse deformation, and worm wheel 4 automatic re-setting separates with pull rod body 2, makes catch 5 reset simultaneously, accomplishes the unblock.

When the pressing mechanism 3 rotates, the worm wheel 4 rotates and drives the pull rod body 2 to axially rotate, and then the bearing seat mounted on the pull rod body 2 moves up and down, so that the function of adjusting the roll gap is achieved. The structure of the locking ring 5 may be a unitary, open, split structure, depending on the environment of use. The matching precision grade of the lower end of the inner hole of the worm wheel 4 and the optical axis of the pull rod body 2 can be improved, and the assembly precision of the rolling mill equipment can be further improved while the guide performance is high.

The invention adopts the optical axis connection, and can be connected at any position, so the invention is called without phase, and the phase diagram of the invention is shown in figure 5. Because the invention adopts the keyless connection, the strength of the body cannot be weakened by processing the key groove. The locking ring 5 is a double-cone structure with two small ends and a big middle part, and can be retracted and reset. The base 6 and the flange 7 are arranged on the outer side of the locking ring 5, and the inner hole surfaces are conical and correspond to the shape of the locking ring 5. The upper end smooth shaft end of the worm wheel 4 has the functions of contraction and automatic reset.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.