CN218873252U - Adjustable horizontal supporting device for feed rotary box of cold rolling mill - Google Patents

Abstract

The utility model discloses an adjustable horizontal supporting device for a feeding rotary box body of a cold rolling mill, which comprises a supporting seat arranged on a foundation pit and an adjustable supporting mechanism used for supporting the feeding rotary box body of the cold rolling mill; the supporting seat comprises an end cover arranged on the foundation pit and a cylinder body arranged on the end cover; the adjustable supporting mechanism comprises a spring, a threaded shaft, a threaded through cover, a fixed nut and a bearing assembly; the distance between the threaded shaft and the end cover is adjusted through a spring, and the threaded shaft is fixed on the supporting seat through a threaded through cover; the fixing nut is arranged on the threaded shaft and fixed on the outer side of the threaded through cover; the adjustable supporting mechanism is contacted with the feed revolving box body of the cold rolling mill through a bearing assembly and supports the feed revolving box body. The utility model discloses can effectual promotion feed rotation mechanism box and bear the ability of impact load, eliminate the trouble hidden danger that leads to because of the box is not hard up from the source, promote equipment operation quality, guarantee the orderly production of high alloy seamless steel pipe.

Description

Adjustable horizontal supporting device for feed rotary box of cold rolling mill

Technical Field

The utility model relates to a cold rolling production facility of metallurgical, mechanical industry production seamless steel pipe relates to a horizontal supporting device with adjustable be used for the cold rolling mill to feed the gyration box, is particularly useful for large-scale bottom half axial bearing and positioning compensation function.

Background

The common two-roller cold rolling mill comprises a feeding swing mechanism, a rolling mechanism, a transmission mechanism, a rotary chuck mechanism, a lathe bed mechanism, a feeding (discharging) mechanism, a lubricating mechanism, a hydraulic mechanism, an electrical control system and the like; the feeding rotary mechanism consists of a feeding rotary gear box, an intermediate transition gear box, a horizontal transmission shaft device, a corner transmission shaft device, a feeding motor, a quick-withdrawing motor and the like, when the feeding rotary mechanism is used, the power output by the transmission mechanism is respectively converted into feeding and corner actions to be output, and a tube blank is uniformly conveyed into a rolling mechanism for deformation processing according to set parameters (feeding amount) through the horizontal movement of a tube blank chuck.

Taking the LG-220H cold pilger mill as an example, the working principle is as follows: the method comprises the steps of feeding a tube blank (moving the tube blank on a feeding bench into a trough under hydraulic drive) → conveying the tube blank (pushing the tube blank in the trough under a pushing trolley, sleeving the tube blank on a mandrel and penetrating through a mandrel chuck shaft hole of a feeding rotary gear box to enter a lathe bed mechanism) → positioning the tube blank (stopping after the tube blank penetrates through a through hole in a tube blank chuck, closing an end cover of the tube blank chuck, retreating the pushing trolley, closing the mandrel chuck device under hydraulic drive, fixing the mandrel) → moving the tube blank (starting a quick retreating motor to drive a quick advancing and retreating device to work, pushing the tube blank chuck against the tube blank quickly and horizontally, stopping when the tube blank approaches the tail end of a previous tube blank) → rolling (working a main motor, outputting power to drive a transmission mechanism to work, and outputting power to a rolling blanking mechanism and a feeding rotary mechanism respectively, wherein a rack device of the rolling mechanism does horizontal reciprocating motion in a stand, drives a roller device to do rotary motion in the stand, the feeding rotary mechanism outputs set feeding rotary motion to the tube blank through a double-side screw device and a finished product output device mounted in the feeding rotary gear box to output the tube blank in the feeding rotary gear box, and continuously output the tube blank via a rotary device.

It can be seen from the above working principle that the feeding rotary gear box plays a key role of no replacement in the production of seamless steel tube cold rolled tubes, and the running stability of the mechanism directly influences the orderly running of the whole cold rolling unit and the rolling quality and efficiency of the seamless steel tubes. Still taking the LG-220H cold pilger mill as an example, the whole set of mechanism consists of a feeding rotary gearbox body, a corner output device, a traveling screw device, a swing rod adjusting device, a mandrel chuck device, a feeding transmission device, a mandrel fine-tuning device, a feeding display device, a quick advancing and retreating device, a cam detection device, a lubricating pipeline and other parts. The whole mechanism is 46 tons in weight, is in a curved ruler shape, is in a three-layer structure, and sequentially comprises a lower box body (box seat), a middle box body (box body) and an upper box body (box cover), and is arranged at the middle position of the equipment, wherein the front side is a lathe bed mechanism, the rear side is a feeding (discharging) mechanism, and the left side is a lubricating mechanism; the whole set of mechanism is arranged in a concrete foundation pit, a foundation pit plane (ground) is 0.6M lower than the ground of a factory building, a bolt of 11M 62 is vertically erected on the foundation pit plane according to the setting, a lower box body is horizontally placed on the foundation pit plane (ground), and after the position is corrected, the body is fixed with a bolt of 11 which is arranged in advance through a nut.

In production practice, the stability of the box is the most important feature for the feed slewing gear, which is assumed by the fastening bolts at 11. However, in daily production, due to the fact that the rolling specification is large, the production proportion of the seamless steel pipe with high alloy elements is larger and larger along with the change of market demands, the high alloy elements mean that the requirement on the rolling force of deformation machining is higher, and according to the Newton's third motion law, the reaction force born by the feeding and rotating mechanism is stronger when the rolling force is larger. The working condition directly causes the reverse acting force of the rolling mechanism born by the box body of the feeding and rotating mechanism, which is transmitted by the mandrel and the tube blank, to act on the middle upper part of the box body, and finally causes the shaking of the box body due to the action of force couple, and the fastening bolt at the 11 part can also generate the phenomena of loosening and distortion, thereby causing equipment failure. The box body shaking can cause local displacement of the box body, so that the deviation of a rolling central line is caused, and the subsequent treatment consumes labor and time, so that the shutdown loss is huge. The stability of such large box structures is known to be a common problem not only in the field of seamless steel tube cold rolling but also in other similar machining processes. When the box body is loosened and shaken, fastening treatment is needed, but the inducement of shaking and loosening cannot be fundamentally eliminated due to the existence of rolling force and reaction force; and the box body structure cannot be updated, and can only be compensated by increasing the supporting measures of the box body. For a seamless steel pipe cold rolling mill, the space in a concrete foundation pit is narrow, and large structural parts cannot be added; although the horizontal jack mode can meet the requirement of box bottom support, once the horizontal jack is installed, the horizontal jack can not be removed, more than ten sets of horizontal jacks are expensive, the investment of enterprises is increased, and the existing space is not favorable for the adjustment operation of the horizontal jack.

In summary, the loosening of the box body of the feeding and rotating mechanism of the current seamless steel tube cold rolling mill is a main fault point influencing production, and the increase of the supporting measure at the bottom of the box body is an effective way for eliminating faults. In view of this, it is urgent to wait to design a supporting device, can combine the cold rolling mill to feed the operating mode environmental characteristic of gyration box in the foundation ditch, implements corresponding technological improvement, on the basis of guaranteeing gyration box stability, satisfies the demand that high alloy seamless steel pipe produced in order, reduces equipment cost of maintenance to improve enterprise market core competitiveness.

SUMMERY OF THE UTILITY MODEL

The defect to exist among the prior art, the utility model aims at providing a horizontal support device with adjustable be used for the cold rolling mill to feed the gyration box, combine the cold rolling mill to feed the operating mode characteristic of gyration box in the foundation ditch, effectual promotion feeds the ability that the gyration mechanism box bore impact load, the locking effect of antidetonation lasts, high efficiency is practical, eliminate the hidden trouble because of the box is not hard up and lead to in the source, the equipment operation quality has been promoted, guarantee the orderly production of high alloy seamless steel pipe, to the large-scale box component shock-proof measure of similar machine-building field equipment, certain reference has, using value.

In order to realize the purpose, the utility model adopts the following technical scheme:

the utility model provides an adjustable horizontal supporting device for a feeding rotary box body of a cold rolling mill, which comprises a supporting seat arranged on a foundation pit and an adjustable supporting mechanism used for supporting the feeding rotary box body of the cold rolling mill;

the supporting seat comprises an end cover arranged on the foundation pit and a cylinder body arranged on the end cover;

the adjustable supporting mechanism comprises a spring, a threaded shaft, a threaded through cover, a fixed nut and a bearing assembly; the distance between the threaded shaft and the end cover is adjusted through a spring, and the threaded shaft is fixed on the supporting seat through the threaded through cover; the fixing nut is arranged on the threaded shaft and fixed on the outer side of the threaded through cover; the adjustable supporting mechanism is contacted with the feed rotary box body of the cold rolling mill through a bearing assembly and supports the feed rotary box body.

Preferably, the threaded shaft comprises a first shaft section, and a second shaft section and a third shaft section which are respectively arranged on two sides of the first shaft section, and the diameters of the second shaft section and the third shaft section are smaller than that of the first shaft section;

the first shaft section comprises a threaded section and a transition shaft section for mounting the threaded through cap and the fixing nut; the second shaft section is arranged close to the thread section, and the diameter of the second shaft section is matched with the inner diameter of the spring; the third shaft segment is disposed proximate the transition shaft segment, and the third shaft segment is coupled to the bearing assembly.

Preferably, the diameter of the first shaft section is 2 to 4mm smaller than the outer diameter of the spring and the diameter of the first shaft section is 2 to 4mm larger than the inner diameter of the spring.

Preferably, the length of the threaded section is 4/5 of the total length of the first shaft section.

Preferably, the height of the spring is 1/3-2/5 of the length of the cylinder, and the outer diameter of the spring is 2-5 mm smaller than the inner diameter of the cylinder.

Preferably, 4 threaded blind holes for fixing the threaded through cover are formed in the barrel.

Preferably, the threaded through cover is provided with an internal thread matched with the threaded shaft; the end surface of the threaded through cover is provided with a counter bore matched with the threaded blind hole on the cylinder body; the threaded transparent cover is fixedly connected with the barrel through a screw.

Preferably, 4 rectangular grooves are equidistantly arranged on the outer circumference of the fixing nut.

Preferably, the bearing assembly comprises an end sleeve and a rolling bearing; the end sleeve is installed on the threaded shaft through the rolling bearing.

The utility model discloses a horizontal supporting device with adjustable be used for cold rolling mill to feed gyration box has following beneficial effect:

1. the device has the advantages of reasonable design, compact structure, practicality, high efficiency, accurate positioning and good stability;

2. the use is convenient, the adjustment operation is labor-saving and time-saving, the requirement on the operation skill is low, and the operation is safe and reliable;

3. an end face rolling bearing is adopted, so that after axial pre-tightening, the end face friction force generated when the threaded shaft rotates is eliminated;

4. by adopting a threaded structure, the threaded shaft can be axially and locally fine-tuned by screwing, the adjustment precision is improved, the deviation correction function is realized, the on-site adjustment is convenient, the labor and the time are saved, and the restriction of a local environment is avoided;

5. a spring pre-tightening structure is adopted, so that the vibration damage to the threaded shaft when the box body bears the influence of rolling force is reduced, and the positioning stability is improved;

6. the bolts are used in groups and installed in a staggered manner, so that the stability of the connecting bolts of the foundation pit and the box body is effectively improved, and the anti-loosening effect is good;

7. the adjustable supporting device is used for solving the problem that the connecting bolts of the foundation pit and the gearbox body are few, and the vertical face of the concrete foundation pit is used as a supporting point from four directions to play a role in supporting the gearbox body;

8. the anti-vibration and anti-loosening device effectively improves the capacity of a box body of the feeding and rotating mechanism to bear impact load, has continuous anti-vibration and anti-loosening effect, is practical and efficient, eliminates the hidden trouble caused by the loosening of the box body from the source, improves the running quality of equipment, ensures the ordered production of high-alloy seamless steel pipes, and can create more than 25 ten thousand yuan of economic benefit every year;

9. the device has strong universality and certain reference and application values for the shockproof measures of large-scale equipment boxes in the field similar to machine manufacturing.

Drawings

FIG. 1 is a schematic structural view of an adjustable horizontal supporting device for a feed rotary box of a cold rolling mill according to the present invention;

FIG. 2 is a schematic structural view of a threaded shaft of the adjustable horizontal support apparatus of the present invention; wherein (a) is a front view and (b) is a side view;

FIG. 3 is a schematic structural view of a cylinder of the adjustable horizontal support apparatus of the present invention; wherein (a) is a schematic cross-sectional view and (b) is a side view;

FIG. 4 is a schematic structural view of the screw through cover of the adjustable horizontal support apparatus of the present invention; wherein (a) is a schematic cross-sectional view and (b) is a side view;

fig. 5 is a schematic structural view of the round nut of the adjustable horizontal support device of the present invention, wherein (a) is a schematic sectional view and (b) is a side view;

fig. 6 is a schematic structural view of an end cap of the adjustable horizontal supporting device of the present invention, wherein (a) is a schematic sectional view and (b) is a side view;

fig. 7 is a schematic structural diagram of an end cap of an adjustable horizontal support device according to the present invention, wherein (a) is a schematic sectional diagram and (b) is a side view;

FIG. 8 is a schematic structural view of a spring of the adjustable horizontal support apparatus of the present invention;

FIG. 9 is a view showing the operation state of the adjustable horizontal support device of the present invention; wherein (a) is a front view; FIG. b is a plan view of FIG. (a).

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will aid those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way.

Referring to fig. 1, the adjustable horizontal supporting device for the feed rotary box of the cold rolling mill provided by the utility model adopts an integral structure and is used in groups; the adjustable horizontal supporting device for the cold rolling mill feeding rotary box body comprises a supporting seat arranged on a foundation pit and an adjustable supporting mechanism used for supporting the cold rolling mill feeding rotary box body. Referring to fig. 1, the supporting seat includes an end cover 9 disposed on the foundation pit and a cylinder 1 disposed on the end cover 9; wherein the end cover 9 is fixed at one end of the cylinder body 1 by adopting a welding mode. The adjustable supporting mechanism comprises a spring 2, a threaded shaft 3, a threaded through cover 4, a fixed nut 5 and a bearing assembly; the distance between the threaded shaft 3 and the end cover 9 is adjusted through the spring 2, and the threaded shaft 3 is fixed on the supporting seat through the threaded through cover 4; the fixed nut 5 is arranged on the threaded shaft 3, and the fixed nut 5 is fixed on the outer side of the threaded transparent cover 4; the adjustable supporting mechanism is contacted with the feed revolving box body of the cold rolling mill through a bearing assembly and supports the feed revolving box body.

Referring to fig. 1 and fig. 7 (a) and (b), the end cap 9 is provided with 1 piece, which is made of 4Q-235A and is a cylinder with a circular groove (the circular groove shown in fig. 7 (a)), that is, a circular groove (for welding centering) is processed on the end face of one side of the end cap 9, and the inner diameter of the circular groove matches with the outer diameter of the cylinder 1.

Referring to fig. 3 (a) and (b), 1 cylinder 1 is made of Q-235A and is hardened and tempered by heat treatment to form a cylindrical structure; processing a circular through hole in the cylinder core part, wherein the axis of the circular hole is superposed with the axis of the cylinder; the outer diameter of the cylinder is matched with the inner diameter of a round blind hole on the plane of the end cover 9; 4 threaded blind holes 11 used for fixing the threaded through cover 4 are vertically processed on the end face of one side of the barrel 1 according to quartering, wherein the aperture and the pitch of the threaded blind holes 11 are matched with 4 counter bores 41 on the end face of the threaded through cover 4, and the intersection of circle center connecting lines of the 4 threaded blind holes 11 is superposed with the axis of the barrel 1.

Referring to fig. 1 and fig. 2 (a) and (b), 1 screw shaft 3 is made of Q-235A, and is hardened and tempered by heat treatment, and the screw shaft 3 is a concentric different-diameter step-shaped cylindrical structure; as shown in fig. 2 (a), the threaded shaft 3 includes a first shaft section 31, and a second shaft section 32 and a third shaft section 33 which are respectively disposed on both sides of the first shaft section 31, and the diameters of the second shaft section 32 and the third shaft section 33 are smaller than the diameter of the first shaft section 31. Wherein the first shaft section 31 comprises a threaded section 311 for mounting the threaded through cap 4 and the fixing nut 5 and a transition shaft section 312; the thread section 311 is a triangular thread formed on a part of the circumferential surface of the first shaft section 31, wherein the thread on the threaded shaft 3 is formed at the shaft shoulder where the second shaft section 32 is connected with the first shaft section 31, the outer diameter of the thread section 311 is matched with the inner diameters of the threaded through cover 4 and the fixing nut 5, and the length of the thread section 311 accounts for 4/5 of the total length of the first shaft section 31. The second shaft section 32 is arranged close to the threaded section 311, and the diameter of the second shaft section 32 is matched with the inner diameter of the spring 2; third shaft segment 33 is disposed adjacent transition shaft segment 312, and third shaft segment 33 is coupled to a bearing assembly. Wherein in a specific embodiment the diameter of the first shaft section 31 is 2-4 mm smaller than the outer diameter of the spring 2 and the diameter of the first shaft section 31 is 2-4 mm larger than the inner diameter of the spring 2. The second shaft section 32 has a length greater than the length of the third shaft section 33.

As shown in the combined drawings 1 and 8, the spring 2 is provided with 1 piece, the material of the spring 2 is spring 2 steel, the number of turns of the spring 2 is 5, the height of the spring 2 is preferably between 1/3 and 2/5 of the length of the sleeve, and the outer diameter of the spring 2 is preferably 2 to 5mm smaller than the inner diameter of the cylinder 1.

With reference to fig. 1 and fig. 4 (a) and (b), 1 thread through cover 4 is provided, which is made of Q-235A and is a circular ring with a counter bore, the thread through cover 4 is provided with an internal thread matched with the threaded shaft 3, that is, a triangular thread is processed on the surface of an inner hole of the circular ring with the counter bore, and the internal diameter of the thread is matched with the external diameter of the thread section 311 of the threaded shaft 3; the end face of the threaded through cover 4 is vertically provided with 4 counter bores which are vertically matched with 4 threaded blind holes on the cylinder body 1 according to quartering, and the pitch and the aperture of the counter bores are matched with the 4 threaded blind holes on the end face of the cylinder body 1. The threaded through cover 4 is fixedly connected with the cylinder 1 through a screw 8; wherein, the screw 8 can adopt an inner hexagon screw, and the specific specification is M8 x 25mm, and is a standard component.

Referring to fig. 1 and fig. 5 (a) and (b), the fixing nut 5 is provided with 1 piece, which is made of Q-235A and is a circular ring with a rectangular groove 51, a triangular thread is processed on the surface of an inner hole of the circular ring, and the thread of the fixing nut 5 is matched with the thread section 311 of the threaded shaft 3; the outer circumference of the fixing nut 5 is provided with 4 rectangular grooves 51 at equal intervals.

As shown in fig. 1 and fig. 6 (a), (b), the bearing assembly includes an end sleeve 6 and a rolling bearing 7; the end cover 9 is arranged on the threaded shaft 3 through a rolling bearing 7; the diameter and length of the third shaft section 33 on the threaded shaft 3 are adapted to the inner diameter and thickness of the rolling bearing 7 of the bearing assembly. Wherein, the end sleeve 6 is provided with 1 piece, the material of the end sleeve is Q-235A, the end sleeve is a cylinder with a circular blind hole 61, namely, the circular blind hole 61 is processed at the core part of the cylinder, and the inner diameter and the depth of the circular blind hole 61 are matched with the rolling bearing 7. The rolling bearing 7 is provided with 1 set, and a tapered roller bearing 7 with the model number of 32207 can be adopted as a standard part.

Referring to fig. 9 (a) and (b), the adjustable horizontal supporting devices 10 for the feed rotary box of the cold rolling mill are generally used in a set of groups, and are respectively installed between the bottom of the feed rotary box 20 and the peripheral wall (cofferdam) of the foundation pit 30, and ten sets of relatively independent devices are used for supporting the rotary box 20 from four directions by using the vertical surface of the concrete foundation pit 30 as a supporting point.

The utility model relates to an adjustable horizontal supporting device for a feeding rotary box body of a cold rolling mill, which is used for axial supporting and positioning compensation operation of the feeding rotary mechanism, is used in a certain steel tube factory at Shanghai on a plurality of types of two-roller periodic cold rolling mills (such as LG-220H, LG-180H, LG-150H and the like) with the external diameter finished product specification of more than 150 mm; particularly, when in use, the assembly is required to be carried out firstly, namely:

1) Assembling the cylinder body 1: horizontally placing an end cover 9 on a special platform (the end face with a blind hole on the end cover 9 faces upwards), vertically placing a cylinder body 1 on the end cover 9 (the end with a threaded blind hole on the cylinder body 1 faces upwards), and welding and forming after centering (the end face of the end cover 9 is provided with a circular mark);

2) Assembling the threaded shaft 3: sequentially screwing a fixing nut 5 and a threaded through cover 4 at the tail part of a threaded section 311 of a threaded shaft 3, directionally assembling an outer ring of a rolling bearing 7 in a circular blind hole 61 of an end sleeve 6 (with a large hole facing outwards), directionally assembling an inner ring of the rolling bearing 7 (including a rolling body and a retainer) in a third shaft section 33 of the threaded shaft 3, with the small diameter of the inner ring of the bearing 7 facing outwards, and sleeving a spring 2 into a second shaft section 32 of the threaded shaft 3;

3) And (3) integral assembly: the threaded shaft 3 which is pre-assembled and molded is directionally assembled in the cylinder body 1, after counter bores 41 at four positions on the threaded through cover 4 are aligned with threaded blind holes 11 at four positions of the cylinder body 1, 4 hexagon socket head cap screws are respectively screwed and fastened, and the end sleeve 6 provided with the outer ring of the rolling bearing 7 is arranged on the inner ring of the bearing 7 of the threaded shaft 3;

4) The installation process is repeated to complete the whole assembly operation of the ten sets of adjustable supporting devices, and the adjustable supporting devices can be used on a machine.

The assembled adjustable horizontal supporting device for the feed rotary box body of the cold rolling mill selects proper installation stations (see (a) and (b) in fig. 9) according to the actual working conditions (geometrical shapes) of the feed rotary box body and the positions of fastening bolts during specific use time. Firstly, horizontally laying an adjustable horizontal supporting device between a foundation pit cofferdam and a box body, and pre-tightening a screwing threaded shaft 3 after correcting levelness; and after the ten adjustable horizontal supporting devices are completely installed in place, adjusting again, adjusting perfectly according to a rolling center line measurement parameter seat, fastening the round nut after confirming no error, and smearing and preventing looseness by adopting thread glue. When daily use, need regularly to inspect the utility model's of utility model design use operating mode, in time adjust the fastening. The utility model can be buried in concrete as permanent fastener for special occasions or special requirements.

In summary, the adjustable horizontal supporting device for the feeding rotary box body of the cold rolling mill has the advantages of reasonable design, compact structure, practicability, high efficiency, accurate positioning, good stability, convenient use, labor and time saving in adjustment operation, no restriction of local environment, safety and reliability; the adjustable horizontal supporting device can replace a spiral jack to realize the correction operation in the horizontal direction, and can play a box body supporting role after the correction is finished, thereby improving the capability of bearing impact load of the box body and a foundation pit connecting bolt; by adopting a threaded structure, the threaded shaft can be screwed to realize local fine adjustment in the axial direction, so that the adjustment precision is improved, and the deviation rectifying function is realized; an end face rolling bearing is adopted, so that after axial pre-tightening, the end face friction force generated when the threaded shaft rotates is eliminated; the spring structure is adopted, so that the influence of the vibration of the box body on the supporting device is effectively reduced, and the positioning stability is improved; the utility model is used in groups and installed in a staggered way, thereby effectively improving the stability of the connecting bolt of the foundation pit and the box body and having good anti-loosening effect; the effectual promotion feeds rotation mechanism box and bears the ability of impact load, and the locking effect of antidetonation lasts, and is practical high-efficient, eliminates the trouble hidden danger that leads to because of the box is not hard up from the source, has promoted equipment operation quality, guarantees the orderly production of high alloy seamless steel pipe, can create economic benefits more than 25 ten thousand yuan each year. The device has certain reference and application values for the shock-proof measures of large-scale equipment boxes in the field similar to machine manufacturing.

To sum up, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims (9)

1. An adjustable horizontal supporting device for a feed rotary box body of a cold rolling mill is characterized by comprising a supporting seat arranged on a foundation pit and an adjustable supporting mechanism used for supporting the feed rotary box body of the cold rolling mill;

the supporting seat comprises an end cover arranged on the foundation pit and a cylinder body arranged on the end cover;

the adjustable supporting mechanism comprises a spring, a threaded shaft, a threaded through cover, a fixed nut and a bearing assembly; the distance between the threaded shaft and the end cover is adjusted through a spring, and the threaded shaft is fixed on the supporting seat through the threaded through cover; the fixing nut is arranged on the threaded shaft and fixed on the outer side of the threaded through cover; the adjustable supporting mechanism is contacted with the feed rotary box body of the cold rolling mill through a bearing assembly and supports the feed rotary box body.

2. The adjustable horizontal support device for the feed turn box of a cold-rolling mill of claim 1, wherein the threaded shaft comprises a first shaft section and a second shaft section and a third shaft section which are respectively arranged at two sides of the first shaft section, and the diameters of the second shaft section and the third shaft section are smaller than that of the first shaft section;

the first shaft section comprises a threaded section and a transition shaft section for mounting the threaded through cap and the fixing nut; the second shaft section is arranged close to the thread section, and the diameter of the second shaft section is matched with the inner diameter of the spring; the third shaft segment is disposed proximate the transition shaft segment, and the third shaft segment is coupled to the bearing assembly.

3. The adjustable horizontal support apparatus for a cold rolling mill feed turn box of claim 2, wherein the diameter of said first shaft section is 2-4 mm smaller than the outer diameter of said spring and the diameter of said first shaft section is 2-4 mm larger than the inner diameter of said spring.

4. The adjustable horizontal support apparatus for a cold rolling mill feed swivel housing of claim 2, wherein the length of said threaded section is 4/5 of the total length of said first shaft section.

5. The adjustable horizontal support device for the feed turn box of a cold rolling mill according to claim 1, characterized in that the height of the spring is 1/3 to 2/5 of the length of the cylinder, and the outer diameter of the spring is 2 to 5mm smaller than the inner diameter of the cylinder.

6. The adjustable horizontal support device for the feed turn box of a cold-rolling mill according to claim 1, wherein 4 blind threaded holes for fixing the threaded through cover are provided on the cylinder.

7. The adjustable horizontal supporting device for the feed rotary box body of the cold rolling mill as claimed in claim 6, wherein the thread through cover is provided with an internal thread matched with the threaded shaft; the end face of the threaded through cover is provided with a counter bore matched with the threaded blind hole on the cylinder; the threaded transparent cover is fixedly connected with the barrel through a screw.

8. The adjustable horizontal support apparatus for a cold rolling mill feed swivel housing of claim 1, wherein the fixing nut has 4 rectangular grooves equidistantly formed on its outer circumference.

9. The adjustable horizontal support apparatus for a cold rolling mill feed swivel housing of claim 1, wherein the bearing assembly comprises an end sleeve and a rolling bearing; the end sleeve is installed on the threaded shaft through the rolling bearing.

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