CN215089803U - Swing rod adjusting device for feeding swing mechanism of seamless steel tube cold rolling mill - Google Patents

Abstract

The utility model discloses a swing rod adjusting device for a feeding swing mechanism of a seamless steel tube cold rolling mill, which comprises a rotary transmission unit and a vertical movement unit connected with the rotary transmission unit through a main shaft; the main shaft is a multi-section step-shaped cylinder with concentric reducing, and the outer circumferential surfaces of two sections at the outermost side of the main shaft are both provided with threads; the rotary transmission unit is in threaded connection with the outer circumferential surface of one section of the outermost side of the main shaft and comprises a round nut and direct-push washer combination, a rolling bearing A, a worm wheel and a bearing seat which are sequentially arranged towards the other section of the outermost side of the main shaft, and the rolling bearing B is arranged in the bearing seat; the vertical movement unit comprises a sliding seat which is connected with the outer circumferential surface of the other section of the outermost side of the main shaft through a threaded sleeve, a sliding block is arranged on one end face of the sliding seat, and a sliding plate is arranged on the other end face of the sliding seat. The utility model discloses optimize the axial positioning of main shaft and worm wheel from the source, improve the use operating mode of slide, reduce equipment operation trouble, guarantee cold rolling tubulation quality and efficiency.

Description

Swing rod adjusting device for feeding swing mechanism of seamless steel tube cold rolling mill

Technical Field

The utility model relates to a cold rolling production facility of metallurgical, mechanical industry production seamless steel pipe, more specifically say, relate to a pendulum rod adjusting device that is used for seamless steel pipe cold rolling mill to feed rotation mechanism.

Background

Seamless steel pipes are common metallurgical metal products. The seamless steel pipe cold rolling technology is a main mode for producing, preparing and processing seamless steel pipes at present due to the characteristics of high rolling precision, high speed, high productivity, high yield, easy production organization and process technology adjustment and the like.

The seamless steel tube cold rolling production equipment is divided into two-roller type and multi-roller type according to the number of rollers, wherein the two-roller periodic cold rolling tube is used for carrying out normal-temperature cold deformation processing on a blank tube through a deformation tool consisting of a top head (together with a core rod) and a hole pattern, and the seamless steel tube cold rolling mill is the most widely applied seamless steel tube cold rolling mill due to the characteristics of compact structure, large rolling force, high yield and the like.

The two-roller periodic cold pilger mill is a commonly used seamless steel pipe cold rolling device at present, and mainly comprises a feeding swing mechanism, a rolling mechanism, a transmission mechanism, a mandrel swing mechanism, a lathe bed supporting mechanism, a feeding and blanking mechanism, a hydraulic system, a process lubricating system, an electric automatic control system, a pneumatic system, an auxiliary mechanism and the like. The feeding and rotating mechanism consists of a mandrel chuck device, a mandrel fine-tuning device, a corner input and output device, a feeding and rotating cam device, a worm gear (worm) rod pair, a feeding swing rod device, a box body, a hydraulic system, a lubricating system and the like, is arranged in the feeding and rotating gear box body in a set manner, has the using function of decomposing power output by a main motor into horizontal feeding motion and synchronous rotating motion in seamless steel pipe rolling, outputting the synchronous motion of feeding (horizontal displacement) and rotating (radial rotation) required by rolling deformation of the seamless steel pipe, and outputting corresponding vector kinetic energy after speed reduction and direction change.

The swing rod feeding device comprises a swing rod, a swing rod seat, an adjusting component, a motor and the like, wherein the adjusting component comprises a sliding unit, a worm gear pair and a transmission unit thereof, and comprises a main shaft, a sliding seat, a sliding plate, a distance ring, a rolling bearing, a bearing seat, a transparent cover, a worm gear, a worm, a round nut, a fastener and the like; the worm wheel is arranged at the tail end of the main shaft, the front side and the rear side of the worm wheel are respectively provided with the rolling bearing and the bearing seat, the position of the bearing is adjusted through the distance ring, and the axial positioning function is realized through the end cover, the transparent cover, the round nut and the fastener; the slide seat is assembled with the main shaft in a directional mode through the T-shaped threaded hole in the core part, and slide plates are installed on two sides of the slide seat and used for preventing abrasion of the contact surface and unsmooth movement clearance.

Referring to fig. 1 and 2, in production practice, a swing link and a swing link seat are vertically installed inside a feeding rotary gear box body 1, a motor 2 is installed on a panel outside the feeding rotary gear box body 1, the outer side of a main shaft of the motor is connected with a worm shaft through a coupling, the whole set of feeding swing link device 3 is in an L-shaped structure inside the feeding rotary gear box body 1, the vertical long edges are the swing link and the swing link seat, the horizontal short edges are the worm shaft, and the main shaft, a worm gear transmission component and a sliding component are arranged between the swing link (the swing link seat) and the worm shaft. The motor outputs high-speed rotation kinetic energy, the kinetic energy is transmitted through the worm shaft and drives the worm gear to synchronously rotate, the main shaft synchronously rotates in the forward direction or the reverse direction under the driving of the worm gear, finally, the sliding seat vertically moves in a space formed by the oscillating bar and the gear box body due to the forward rotation or the reverse rotation of the main shaft, the oscillating bar swings around the oscillating bar seat due to the vertical movement of the sliding seat, and the function of adjusting the feeding amount on line is realized. Therefore, for the whole set of feeding and rotating mechanism, the feeding swing rod device is the only component for online adjustment (adjustment) of the rolling feeding amount, and a two-roll periodical seamless steel tube cold rolling mill needs to roll a plurality of specifications and steel types, wherein the rolling feeding amount of each specification or each steel type is different, and needs to be adjusted timely according to different specifications and steel types. Therefore, the functional precision and the working condition state of the feeding swing rod device directly influence the accuracy and the stability of the rolling feeding amount, are the main parameter indexes of the output performance precision of the whole feeding swing mechanism, and directly influence the rolling quality and the rolling efficiency of the whole equipment.

As for the present feed swing rod device, compact structure, the motor through feeding the outside of the rotary gear box body provides kinetic energy, is not influenced by the kinetic energy output by the main motor, belongs to a relatively independent actuating mechanism independent of the control of the main motor, and although the structural performance can meet the requirement of the existing seamless steel pipe cold rolling pipe, still has certain defects, namely:

1) the axial positioning loss of the worm wheel is easy to fall down: at present, a worm wheel is axially positioned on a main shaft through a distance ring and a round nut, but the main shaft provided with the worm wheel and a rolling bearing is axially fixed in a feeding rotary gear box body only through a stepped shaft shoulder, a bearing seat and a transparent cover. Because the main shaft adopts perpendicular mounting means, the weight of slide passes through the screw thread and transmits to the main shaft, and the main shaft is in the trend of sinking all the time because of the influence of gravity, and along with the wearing and tearing of screw thread, the wearing and tearing of antifriction bearing progressively increase. Finally, the transmission center line of the worm wheel and the worm deviates, so that the expansion of the worm wheel pair during transmission directly causes that the adjustment of the on-line feeding amount cannot be realized;

2) the abrasion of the inner threaded hole of the sliding seat is large: the sliding seat is made of copper alloy, the core part is a T-shaped thread, the feeding amount mouse needs to be adjusted at any time, the sliding seat is in a high-load state for a long time and also needs to bear impact load when a seamless steel pipe is rolled, so that the abrasion amount of a threaded hole is large, once the abrasion amount exceeds the specified range, the movement clearance when the rotary feeding amount of the spindle is adjusted is increased, the sliding seat is integrally inclined, particularly, the idle position and the rebound of the threaded hole when the spindle rotates directly cause the fluctuation and the instability of the feeding amount, and the sliding seat needs to be replaced at the moment. The whole sliding seat is made of copper alloy, non-ferrous metal belongs to non-renewable resources, and purchasing and preparation cost is high;

3) the sliding plates on the two sides of the sliding seat are easy to escape: the two sides of the sliding seat are made of copper alloy sliding plates to prevent the sliding seat body from being abraded, and the sliding seat can be repaired and repaired by compensating abrasion through a paper pad, a copper sheet and the like. However, the sliding seat sliding plate is in a closed space for a long time, bears impact load during rolling, bears abnormal acting force such as extrusion and shearing, easily causes faults such as fracture of fastening screws and falling escape of the sliding plate, is in the closed space, and cannot be observed and found by operators in time, so that the whole feeding swing rod and even the whole feeding cam device are impacted and damaged. The wear loss of the base surface on one side of the swing rod is far higher than that of the contact surface on the other side of the swing rod and the gear box body due to the fact that the swing rod frequently swings like a pendulum.

SUMMERY OF THE UTILITY MODEL

The above-mentioned defect to existence among the prior art, the utility model aims at providing a pendulum rod adjusting device for seamless steel pipe cold rolling mill feeds rotation mechanism, feed pendulum rod adjusting device to current two roller periodic seamless steel pipe cold rolling mill and feed rotation mechanism and implement corresponding technological improvement, optimize the axial positioning of main shaft and worm wheel from the source, improve the use operating mode of slide, on the basis that satisfies seamless steel pipe cold rolling tubulation production, reduce equipment operation trouble, guarantee cold rolling tubulation quality and efficiency, promote equipment function precision construction, reduce equipment maintenance cost.

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

a swing rod adjusting device for a feeding swing mechanism of a seamless steel tube cold rolling mill comprises a rotary transmission unit and a vertical movement unit connected with the rotary transmission unit through a main shaft;

the main shaft is a multi-section step-shaped cylinder with concentric and different diameters, and the outer circumferential surfaces of two sections at the outermost side of the main shaft are provided with threads;

the rotary transmission unit is in threaded connection with the outer circumferential surface of one section of the outermost side of the main shaft and comprises a round nut and direct-pushing washer combination, a rolling bearing A, a worm wheel and a bearing seat which are sequentially arranged towards the other section of the outermost side of the main shaft, and a rolling bearing B is arranged in the bearing seat;

the vertical movement unit comprises a sliding seat which is connected to the outer circumferential surface of the other section of the outermost side of the spindle through a threaded sleeve, a sliding block is arranged on one end face of the sliding seat, and a sliding plate is arranged on the other end face of the sliding seat.

Preferably, a triangular thread is arranged on the outer circumferential surface of one section of the outermost side of the spindle and is connected with the round nut and the straight pushing washer in a combined mode, and a T-shaped thread is arranged on the outer circumferential surface of the other section of the outermost side of the spindle and is connected with the sliding seat.

Preferably, the top of the bearing seat is provided with a bearing transparent cover, the bottom of the combination of the round nut and the direct-pushing washer is also provided with a bearing end cover, and the bearing end cover is also provided with a fixed transparent cover.

Preferably, distance rings are arranged at the top and the bottom of the worm wheel.

Preferably, a rectangular key groove with two semicircular ends is formed in the surface of the main shaft for mounting the worm wheel, and a flat key is arranged in the rectangular key groove.

Preferably, the sliding seat is provided with a step-shaped cylindrical through hole for mounting the threaded sleeve.

Preferably, a semicircular groove used for installing the sliding block is formed in one end face of the sliding seat, a threaded through hole is formed in the semicircular groove, and the threaded through hole is vertically communicated with the step-shaped cylindrical through hole.

Preferably, the sliding block is arranged to be semicircular and matched with the semicircular groove, and is fixed through a fastening bolt, and the fastening bolt is matched with the threaded through hole.

Preferably, the sliding plate is fixedly connected to the other end face of the sliding seat through a fastening screw.

Preferably, the threaded sleeve is provided with a T-shaped threaded hole which is matched with the T-shaped thread on the outer circumferential surface of the other section of the outermost side of the main shaft.

The utility model provides a pendulum rod adjusting device for seamless steel pipe cold rolling mill feeds rotation mechanism has following several beneficial effect:

1) the utility model adopts a split structure, takes the T-shaped thread pair of the main shaft as a node, and is divided into two relatively independent units, thereby having reasonable design and compact structure;

2) the utility model discloses a rotary transmission unit comprises worm wheel, antifriction bearing, bearing frame, transparent cover and end cover, distance ring, round nut, fastener etc. and plays the function of supporting the worm wheel and driving the main shaft to realize high-speed rotation;

3) the utility model compensates the axial positioning of the main shaft and the worm wheel through the orderly combination of the end cover and the transparent cover, and prevents the hidden danger that the main shaft and the worm wheel integrally drop;

4) the vertical motion unit of the utility model consists of a slide seat, a slide plate, a slide block, a thread bush, a press plate and a fastener, wherein the thread bush is directionally arranged at the core part of the slide seat and connected with a main shaft, and plays a role of bearing positive pressure and shearing force through the arc slide block;

5) the sliding block of the utility model is fixed on the sliding seat, replaces the sliding plate to bear the swing shearing force of the feeding swing rod, improves the capability of resisting shock load, and always ensures that the movement clearance of the sliding seat in the closed space inside the box body is reasonable and effective;

6) the threaded sleeve realizes the functions of connecting the sliding seat at the outer side and connecting the main shaft at the inner side through directional assembly, interference fit and fixation of the end face pressing plate, thereby reducing the abrasion consumption of the sliding seat;

7) the utility model has the advantages of safety, reliability, convenient installation, use and maintenance, practicability, high efficiency, continuous and stable output precision of feed regulation, capability of meeting the requirement of ordered production of seamless steel pipe cold rolling production lines, certain elimination, cost reduction and production promotion effects and promotion of functional precision construction of equipment;

8) the utility model discloses the commonality is strong, and the pendulum rod adjusting device who feeds among the rotation mechanism to present similar two roller periodic seamless steel pipe cold rolling mill improves, has certain reference, using value.

Drawings

FIG. 1 is a schematic structural diagram of a feeding rotary mechanism of a conventional seamless steel tube cold rolling mill;

FIG. 2 is a left side view of FIG. 1;

fig. 3 is a schematic structural diagram of the swing link adjusting device of the present invention;

fig. 4 is a schematic structural diagram of the main shaft in the swing rod adjusting device of the present invention;

FIG. 5 is an enlarged schematic view of position I of FIG. 4;

fig. 6 is a schematic structural diagram of a sliding seat in the swing rod adjusting device of the present invention;

figure 7 is a top view of the carriage of figure 6;

FIG. 8 is a left side elevational view of the carriage of FIG. 6;

FIG. 9 is a schematic structural view of a thread bushing in the swing link adjusting device of the present invention;

FIG. 10 is a schematic structural view of a slide pressing plate in the swing link adjusting device according to the present invention;

fig. 11 is a schematic structural diagram of a sliding block in the swing link adjusting device of the present invention;

FIG. 12 is a left side view of the slider of FIG. 11;

fig. 13 is a schematic structural view of a sliding plate in the swing link adjusting device of the present invention;

fig. 14 is a schematic structural diagram of a bearing seat in the swing link adjusting device of the present invention;

fig. 15 is a schematic structural view of a bearing transparent cover in the swing rod adjusting device of the present invention;

fig. 16 is a schematic structural view of a bearing end cap in the swing link adjusting device of the present invention;

fig. 17 is a schematic structural view of a fixed transparent cover in the swing link adjusting device of the present invention;

fig. 18 is a schematic view of the working state of the swing link adjusting device of the present invention.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

Please refer to fig. 3 to 5, the swing link adjusting device for a feeding swing mechanism of a seamless steel tube cold rolling mill provided by the present invention adopts a split structure, and comprises a rotation transmission unit and a vertical movement unit connected to the rotation transmission unit through a main shaft 4.

The main shaft 4 is provided with one piece, is made of Q-235A and needs to be quenched and tempered by heat treatment; the main shaft 4 is set to be a concentric different-diameter step-shaped cylinder, T-shaped threads 403 (matched with the thread sleeve 15) are processed on the outer circumferential surface of one section 401 at the left side of the main shaft 4, five sections of step-shaped cylinders with different diameters are set at the right side of the main shaft 4, the diameters of the step-shaped cylinders are sequentially increased from the end face to the T-shaped thread direction, triangular threads (the diameters of the step-shaped cylinders are matched with the diameter of the combination 5 of a round nut and a straight push gasket) are processed on the outer circumferential surface of the outermost section 402 at the right side of the main shaft 4, the combination 5 of the round nut and the straight push gasket, a rolling bearing A6(7314ACM type), a worm wheel 7 and a bearing seat 8 are sequentially installed on the other sections towards the left side of the main shaft 4 at the right side of the main shaft 4, an assembly gap value matched with the axial direction is processed according to the technical requirements, and 2 sets of rolling bearings B9(7216CM type) are installed in the bearing seat 8.

The top of a mounting bearing seat 8 of the main shaft 4 is provided with a bearing transparent cover 19 through a fastening screw 12, the bottom of the round nut and direct-pushing washer combination 5 is provided with a bearing end cover 10, and the bearing end cover 10 is also provided with a fixed transparent cover 11.

Distance rings 13 are provided between the worm wheel 7 and the bearing housing 8 of the main shaft 4 and between the worm wheel 7 and the rolling bearing a 6.

A rectangular key groove 404 with semicircular two ends is processed on the outer circumferential surface of a main shaft 4 for mounting a worm wheel, the central line of the rectangular key groove 404 is superposed with the axial line of the main shaft 4, and a flat key 14 is assembled in the rectangular key groove 404.

The rotation transmission unit plays a role of supporting the worm wheel 7 and driving the main shaft 4 to rotate at a high speed.

The vertical movement unit comprises a slide 16 screwed to a T-shaped screw 403 of the spindle 4 by means of a threaded sleeve 15, the slide 16 being provided on one end with a slide 17 and the slide 16 being provided on the other end with a slide 18.

The vertical motion unit has the function of making vertical reciprocating motion in a closed rectangular space and timely adjusting the feeding swing amplitude output by the feeding swing rod.

Referring to fig. 6 to 8, the slide carriage 16 is made of 38CrMoAlA and is heat treated for hardening and tempering; a semicircular groove 1601 used for mounting the sliding block 17 is processed on one end face of the sliding seat 16, upright ribs are processed on two sides of the semicircular groove, a vertical step-shaped cylindrical through hole 1602 used for mounting the threaded sleeve 15 is processed on the sliding seat 16, and the radial center line of the semicircular groove 1601 is perpendicular to the axial center line of the step-shaped cylindrical through hole 1602; a semicircular arc groove 1603 is machined in the middle of an arc surface on the inner side of the semicircular groove 1601, and the circle center of the semicircular arc groove 1603 is overlapped with the circle center of the semicircular groove 1601; a threaded through hole 1604 is machined in the semicircular groove 1601, the axial center line of the threaded through hole 1604 is perpendicular to the axial center line of the stepped cylindrical through hole 1602, and a fastening bolt 20 for fastening the slider 17 is arranged in the threaded through hole 1604; 4 threaded blind holes 1605 are processed on the other end face of the sliding seat 16 according to 2 rows and 2 lines at equal intervals, and fixing screws 21 for fastening the sliding plate 18 are arranged in the threaded blind holes 1605; 2 rectangular grooves 1606 (used for mounting a sliding seat pressing plate 22) are respectively machined on two sides of the stepped cylindrical through hole 1602 on the top surface of the sliding seat 16, the central connecting line of the 2 rectangular grooves 1606 is overlapped with the plane central line of the stepped cylindrical through hole 1602, and 2 bolt blind holes (the diameter of the blind hole is matched with a pressing plate fastening screw) are respectively machined on the bottom plane of the rectangular groove 1606 in an equal division and vertical mode; a rectangular groove 1607 with closed periphery is machined on one side, close to the semicircular groove 1601, of the top surface of the sliding seat 16, and 2 circular blind holes are machined in the center on the plane of the rectangular groove 1607; two sides of the sliding base 16 are respectively provided with a protruding rectangular rib 1608, the width of the rectangular rib 1608 at the position 2 is respectively matched with the rectangular grooves on the upright posts at the two sides of the feeding swing rod, and the rectangular ribs are provided with movement clearance values meeting the technical requirements.

As shown in fig. 9, the threaded sleeve 15 is made of copper alloy (ZCuZn38Mn2Pb 2); the threaded sleeve 15 is in a cylindrical structure, the outer diameter of the threaded sleeve 15 is equivalent to the large-diameter inner diameter of the stepped cylindrical through hole 1602, and interference fit equivalent weight meeting technical requirements is processed; a T-shaped threaded hole 1501 is processed in the core part, and the axial line of the T-shaped threaded hole 1501 is overlapped with the axial line of the step-shaped cylindrical through hole 1602; the top surface of the threaded sleeve 15 is provided with a rectangular groove 1502 (used for installing the sliding seat pressing plate 22) with a semicircular arc top end, the width of the rectangular groove 1502 is equivalent to that of the rectangular groove 1606 on the sliding seat 16, and the central connecting line of the rectangular grooves 1502 on the two sides is superposed with the plane central line of the threaded sleeve 15.

Referring to FIG. 10, there are 2 slide press plates 22, which are Q-235A and need to be quenched and tempered by heat treatment; the sliding seat pressing plate 22 is in a semicircular rectangular structure at one end, 2 circular through holes 2201 are respectively machined in the plane of the sliding seat pressing plate 22, the central connecting line of the circular through holes 2201 in the 2 positions is superposed with the central line of the sliding seat pressing plate 22, and the diameter of each circular through hole 2201 is equivalent to that of a pressing plate screw and has a certain equivalent clearance value.

Referring to fig. 11 to 12, the slider 17 has 1 piece made of copper alloy (ZCuZn38Mn2Pb 2); the sliding block 17 is of a semicircular structure, the diameter of the semicircle of the sliding block 17 is matched with that of the semicircular groove 1601, a concentric different-diameter step-shaped cylindrical hole 1701 is centrally processed on the plane on one side of the sliding block 17, and a positioning sleeve 23 (matched with the fastening bolt 20) is arranged in the cylindrical hole 1701; a semicircular convex arc body is processed in the middle of the semicircular arc surface of the sliding block 17, and the center of the arc body is superposed with the center of the semicircular arc surface.

The positioning sleeve 23 is 1 piece, is made of Q-235A and needs to be quenched and tempered by heat treatment; the positioning sleeve 23 is of a cylindrical structure, a circular through hole is processed in the core part, the axis of the circular through hole is superposed with the axis of the cylindrical hole 1701, and inner and outer chamfers are arranged at two ends of the circular through hole; the outer diameter of the positioning collar 23 corresponds to the diameter of the cylindrical hole 1701, and the inner diameter of the positioning collar 23 corresponds to the diameter of the fastening bolt 20.

As shown in fig. 13, the slide plate 18 has 1 piece, the material is copper alloy (zcuai 10Fe3), the slide plate 18 is a rectangular structure, an inclined plane is processed at the intersection of the long side and the short side of one side of the slide plate 18, 4 concentric step-shaped cylindrical through holes 1801 (for installing the fixing screws 21) with different diameters are respectively processed on the plane of the slide plate 18 according to 2 rows and 2 columns, and the center distance of the 4 cylindrical through holes 1801 is equal to the center distance of the 4 threaded blind holes 1605 on the slide base 16.

Referring to fig. 14, the bearing seat 8 has 1 piece of material Q-235A, which is hardened and tempered by heat treatment, the bearing seat 8 has a concentric different-diameter step-shaped cylindrical structure, the core of the bearing seat 8 is a concentric different-diameter step-shaped cylindrical hole 801, and the inner diameter of the cylindrical hole 801 is equivalent to the outer diameter of the rolling bearing B9 and is processed with a matched installation fit equivalent.

As shown in fig. 15, the bearing transparent cover 19 has 1 piece made of Q-235A and is in a concentric reducing cylinder structure, a circular through hole 1901 is formed in the core of the bearing transparent cover 19, and the axis of the circular through hole 1901 coincides with the axis of the bearing transparent cover 19; a circular through hole 1902 is machined at the position 4 on the large-diameter end surface of the bearing transparent cover 19 according to equal division, and the inner diameter of the circular through hole 1902 is equivalent to that of the fastening screw 12; the small-diameter outer diameter of the bearing transparent cover 19 is equivalent to the large-diameter inner diameter of the bearing seat 8.

Referring to fig. 16, the bearing cap 10 has 1 piece of material Q-235A, and is in a concentric reducing cylinder structure, a circular through hole 1001 is processed at the core of the bearing cap 10, and the axis of the circular through hole 1001 coincides with the axis of the bearing cap 10; the large-diameter end face of the bearing end cover 10 is equally divided into 4 circular through holes 1002, and the inner diameter of each circular through hole 1002 is equal to that of a fastening screw; the outer diameter of the small-diameter section of the bearing end cover 10 is equivalent to the inner diameter of the large-diameter section of the cylindrical hole of the fixed end cover 11.

As shown in fig. 17, the fixed transparent cover 11 has 1 piece of material Q-235A, a core of the fixed transparent cover 11 in a cylindrical structure is processed with a concentric step-shaped circular through hole 1101, and an axial line of the step-shaped circular through hole 1101 is coincident with an axial line of the fixed transparent cover 11; the end face of the fixed transparent cover 11 is equally divided into 4 circular threaded through holes 1102, and the inner diameter of each circular threaded through hole 1102 is equal to that of each fastening screw; the inner diameter of the large-diameter section round hole of the fixed transparent cover 11 is equivalent to the outer diameter of the small-diameter section of the bearing end cover 10.

The round nut is 2 pieces, made of Q-235A, and is of a concentric reducing cylindrical ring structure, triangular threads are machined on the inner circumferential surface of a round hole of the core part, and the inner diameter of each thread is equivalent to the outer diameter of each triangular thread on the main shaft 4; the outer circumferential surface of the round nut is respectively processed with 4 rectangular through grooves according to the quartering, and the end surfaces of two sides of the circular ring are processed into inclined planes from inside to outside.

The flat key 14 is 1 piece, is made of Q-235A and is a rectangular body with two semicircular ends, and the width of the rectangular body of the flat key 14 is equivalent to that of a semicircular head rectangular groove of the worm wheel 7 section on the main shaft 4.

The distance ring 13 is composed of 2 parts, is made of Q-235A and is in a concentric and reducing circular ring structure, and the inner diameter of the circular ring is equivalent to that of a rolling bearing A6 and a rolling bearing B9.

Both rolling bearings A, B6, 9 are standard pieces.

The retaining washer has 1 piece, is standard, and the internal diameter is equivalent to the internal diameter of round nut.

As shown in fig. 18, when the swing link adjusting device of the present invention is used in the field, the cover of the feeding rotary gearbox 1 is opened wholly during the scheduled maintenance construction period, and first, two protruding ribs 1608 of the sliding base 16 in the vertical moving unit are aligned with the internal rib plate of the gearbox and the rectangular grooves of the upright posts at both sides of the feeding swing link respectively and then vertically assembled in place (placed in the upper limit station 200) and temporarily supported by the tool; then, the main shaft 4 and the rotary transmission unit are integrally and vertically lifted from the bottom of the box body rib plate and the bottom of the feeding swing rod device 3 to be installed in place; and then, the main shaft 4 and the bearing seat 8 are directionally installed in a bearing round hole of a gear box body rib plate, the bearing transparent cover 19 is directionally installed in the bearing seat 8 through a small-diameter end cylinder on the other side of the main shaft 4, the main shaft is fixed in a threaded hole of the gear box body rib plate through 4 hexagonal fastening screws 12, and a gasket is prevented from loosening. Thereafter, the distance ring 13 is assembled on the main shaft 4 in an oriented manner and is fixed (attached) to the inner ring of the rolling bearing B9 in the axial direction; then, the flat key 14 is installed in the key groove 404 of the main shaft 4, the worm wheel 7 is directionally assembled on the main shaft 4 by adopting a temperature difference method, and then the distance ring 13 is directionally assembled on the main shaft 4 and is axially fixed (attached) with the end face of the worm wheel 7; then, the rolling bearing A6 is directionally installed on the main shaft 4 by adopting a temperature difference method, the rolling bearing A6 is axially fixed in place by adopting 2 round nuts, and a retaining washer is installed between the 2 round nuts for preventing looseness. Then, welding and fixing the fixed transparent cover 11 and the mounting hole of the main shaft 4 in parallel, directionally installing the small-diameter section of the bearing end cover 10 into the inner hole of the large-diameter section of the fixed transparent cover 11, fixing the small-diameter section by adopting 4 hexagon screws, and preventing the gasket from loosening; and finally, withdrawing the temporary supporting tool, enabling the vertical movement unit to freely fall, aligning the T-shaped thread on the main shaft 4 with the T-shaped threaded hole on the threaded sleeve 15, and screwing the main shaft 4 into the threaded sleeve 15 by manually turning the worm until the position is specified by the technical requirements. Thus, the utility model discloses pendulum rod adjusting device 300's the equipment of operating the computer, wait to feed the cold rolled tube production and processing that can drop into seamless steel pipe after rotary gear box 1 installation resets.

The utility model discloses pendulum rod adjusting device uses the main shaft as connecting elements, and upper portion installation slider combination (vertical motion unit), bottom installation worm wheel transmission combination (rotation transmission unit) are the power input component by the worm wheel, drive the main shaft synchronous revolution, realize slider combination vertical reciprocating motion's function from top to bottom, satisfy the demand of feeding the pendulum rod horizontal hunting to guarantee the continuous stable output of seamless steel pipe rolling feed volume. The threaded sleeve is directionally installed at the core part of the sliding seat and is fixed by the end surface pressing plate, so that the functions of connecting the sliding seat at the outer side and connecting the main shaft at the inner side are realized, and the abrasion consumption of the sliding seat is reduced; the arc-shaped sliding block is fixed on the sliding seat, so that the sliding plate is replaced to bear the swinging shearing force of the feeding swing rod, the impact load resistance is improved, and the reasonable and effective movement clearance of the sliding seat in the closed space in the box body is always ensured; the orderly combination of the end cover and the transparent cover compensates the axial positioning of the main shaft and the worm wheel, and prevents the hidden trouble that the main shaft and the worm wheel integrally fall down. The production line has the advantages of reasonable design, compact structure, safety, reliability, practicality and high efficiency, meets the requirement of ordered production of a seamless steel pipe cold rolling production line, has a certain failure-eliminating and cost-reducing production-promoting effect, and promotes functional precision construction. The universal swing rod adjusting device has strong universality, is improved for the swing rod adjusting device in the feeding swing mechanism of the similar two-roller periodic seamless steel tube cold rolling mill at present, has certain reference and application values, and can reduce the equipment maintenance cost by more than 30 ten thousand yuan per year.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims (10)

1. The utility model provides a pendulum rod adjusting device that is used for seamless steel pipe cold rolling mill to feed rotation mechanism which characterized in that: the device comprises a rotary transmission unit and a vertical motion unit connected with the rotary transmission unit through a main shaft;

the main shaft is a multi-section step-shaped cylinder with concentric and different diameters, and the outer circumferential surfaces of two sections at the outermost side of the main shaft are provided with threads;

the rotary transmission unit is in threaded connection with the outer circumferential surface of one section of the outermost side of the main shaft and comprises a round nut and direct-pushing washer combination, a rolling bearing A, a worm wheel and a bearing seat which are sequentially arranged towards the other section of the outermost side of the main shaft, and a rolling bearing B is arranged in the bearing seat;

the vertical movement unit comprises a sliding seat which is connected to the outer circumferential surface of the other section of the outermost side of the spindle through a threaded sleeve, a sliding block is arranged on one end face of the sliding seat, and a sliding plate is arranged on the other end face of the sliding seat.

2. The swing link adjusting device for the feed slewing mechanism of the seamless steel tube cold rolling mill according to claim 1, wherein: the outer circumferential surface of one section of the outermost side of the spindle is provided with triangular threads which are connected with the round nut and the straight pushing washer in a combined mode, and the outer circumferential surface of the other section of the outermost side of the spindle is provided with T-shaped threads which are connected with the sliding seat.

3. The swing link adjusting device for the feed slewing mechanism of the seamless steel tube cold rolling mill according to claim 1, wherein: the top of bearing frame is furnished with the bearing and passes through the lid, the bottom of round nut and the combination of straight push washer all is furnished with the bearing end cover, still be furnished with fixed passing through the lid on the bearing end cover.

4. The swing link adjusting device for the feed slewing mechanism of the seamless steel tube cold rolling mill according to claim 1, wherein: distance rings are arranged at the top and the bottom of the worm wheel.

5. The swing link adjusting device for the feed slewing mechanism of the seamless steel tube cold rolling mill according to claim 1, wherein: the surface position of the main shaft for mounting the worm wheel is provided with a rectangular key groove with two semicircular ends, and a flat key is arranged in the rectangular key groove.

6. The swing link adjusting device for the feed slewing mechanism of the seamless steel tube cold rolling mill according to claim 1, wherein: and a step-shaped cylindrical through hole for mounting the threaded sleeve is formed in the sliding seat.

7. The swing link adjusting device for the feed slewing mechanism of the seamless steel tube cold rolling mill according to claim 6, wherein: a semicircular groove used for installing the sliding block is formed in one end face of the sliding seat, a threaded through hole is formed in the semicircular groove, and the threaded through hole is vertically communicated with the step-shaped cylindrical through hole.

8. The swing link adjusting device for the feed slewing mechanism of the seamless steel tube cold rolling mill according to claim 7, wherein: the sliding block is arranged to be semicircular and matched with the semicircular groove, and is fixed through a fastening bolt, and the fastening bolt is matched with the threaded through hole.

9. The swing link adjusting device for the feed slewing mechanism of the seamless steel tube cold rolling mill according to claim 7, wherein: the sliding plate is fixedly connected to the other end face of the sliding seat through a fastening screw.

10. The swing link adjusting device for the feed slewing mechanism of the seamless steel tube cold rolling mill according to claim 2, wherein: and a T-shaped threaded hole is formed in the threaded sleeve and is matched with the T-shaped thread on the outer circumferential surface of the other section of the outermost side of the main shaft.

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