CN206779161U - seamless steel pipe rotary feeding mechanism - Google Patents

Abstract

The utility model relates to a seamless steel pipe rotary feeding mechanism, which includes a feeding frame, a lifting base, a rotating wheel set, a motor and a reducer. Pressing wheels, two rotating wheels and an upper pressing wheel outer edge surface are close to each other to form a feeding gap corresponding to the outer wall of the waste tube, the axes of the rotating wheels and the upper pressing wheel are located in three independent planes and are inclined to each other; During the rolling process, the problem that the deformation and rolling of the hot pipe head in the piercing process is not easy to bite is effectively solved. The three rollers of the holding wheel can effectively solve the vibration problem of the mandrel during rolling, ensure the stability of the mandrel during rolling, improve the quality of steel pipe rolling, and extend the length of the mandrel. service life.

Description

Seamless steel pipe rotary feeding mechanism

technical field

The utility model relates to a seamless steel pipe rolling mill feeding device, in particular to a seamless steel pipe rotary feeding mechanism.

Background technique

At present, the production of seamless steel pipes in my country relies on hot rolling and cold drawing. There are many processes for cold drawing, and the production efficiency is low. The process of hot rolling is less than that of cold drawing, but the efficiency has not been improved a lot but the quality of the finished product has been reduced. When the hot rolling method is used to produce seamless steel pipes, due to the inevitable deformation of the head of the waste pipe during the piercing process, it is difficult to bite into the waste pipe during rolling.

Contents of the invention

In order to solve the deficiencies of existing technologies and provide a feeding device for increasing the biting rate of seamless steel pipe rolling mills, the utility model designs a rotary feeding mechanism for producing seamless steel pipes.

The specific technical scheme of the utility model is: a seamless steel pipe rotary feeding mechanism, including a feeding frame, a lifting base, a rotating wheel set, a motor and a reducer, and a number of rotating wheel sets are arranged on the feeding frame, and the rotating wheel set It includes a rotating wheel and an upper pressing wheel. The outer peripheral surfaces of the two rotating wheels and one upper pressing wheel are close to each other to form a feeding gap on the outer wall of the corresponding waste pipe. The axes of the rotating wheel and the upper pressing wheel are located in three planes independent of each other and Inclined; the rotating wheel or the upper pressure wheel is correspondingly assembled on the feeding frame through the mounting base, and the two rotating wheels in the same rotating wheel group are correspondingly or staggered distributed on both sides of the feeding frame, and one end of the feeding frame is equipped with a motor and a reducer, the rotating wheel groups located on the same side of the feed frame are sequentially connected by cardan shafts and then assembled on the reducer; the axes of the inscribed circles in the feeding gap of the rotating wheel groups are distributed along the same straight line to form a feeding channel. The feeding channel of the feeding frame is provided with a V-shaped groove supporting plate; the core rod holding wheel or the core rod supporting wheel corresponding to the feeding channel is provided between two adjacent rotating wheel groups, and the core rod holding wheel includes two horizontally distributed A lower roller and an upper roller located above the gap between the two lower rollers, the upper roller is correspondingly connected to the side of the feed frame through the first crank arm; the upper pressure wheel is connected to the side of the feed frame through the second crank arm.

The inclination angle between the axes of the two rotating wheels is α, -15°>α<15°; the inclination angle between the rotating wheel and the longitudinal direction of the feed frame is β, 1°>β<10°; The inclination angle between the longitudinal directions of the racks is γ, 1°>β<13°.

The V-shaped groove supporting plate is connected to the feeding frame through the connecting ear, and one end extends to the feeding end of the rolling mill; one end of the connecting ear is connected to the lower part of the V-shaped supporting plate, and the other end is connected to the feeding frame. The distance between the feed end of the rolling mill is 0.8m-2m.

The installation base includes two sets of installation seats arranged oppositely. The installation seats include a fixed seat and an adjustment plate. The fixed seat is a square cylinder fixed on the feed frame, and its side walls are provided with two vertical waist-shaped holes. The adjusting plate is a square cylinder matching the inner cavity of the fixing seat, and its side wall is correspondingly assembled in the vertical waist hole through fixing bolts; the middle part of the side wall of the adjusting plate is provided with a wing plate extending above the fixing seat, and the wing plate An adjusting bolt pointing to the upper end surface of the fixed seat is arranged on the plate; the main shaft of the rotating wheel is installed on the upper end of the adjusting plate through a rotating pair.

The core rod supporting wheel is correspondingly assembled on the hinge support, and the lower end of the hinge support is connected with a torsion bar extending axially along the supporting wheel, and the end of the torsion bar is connected with a hydraulic cylinder through a torsion arm; The mounting seat of the rod; the number of the core rod supporting wheels is 2-7; the middle part of the first crank arm or the second crank arm is hinged on the feed frame, the front end is equipped with an upper pressure wheel or an upper roller, and the rear end is hinged. hydraulic cylinder.

The two lower rollers of the core rod holding wheel are correspondingly connected to the same connecting plate through the rotating pair, and the lower part of the connecting plate is slidably assembled on the feed frame through the guide column, and the side of the feed frame is hinged with a third crank arm. The front end of the third crank arm is in contact with the lower end of the connecting plate, and the rear end is correspondingly hinged with a hydraulic cylinder; the feed frame is provided with a sliding sleeve corresponding to the guide column; the number of the core rod holding wheels is 1-5 groups.

The feed frame is provided with a V-shaped groove supporting plate, and the V-shaped groove supporting plate is provided with a gap corresponding to the rotating wheel or the lower roller.

Beneficial technical effects: the utility model has a simple structure and is convenient to adjust, and effectively solves the problem that the hot pipe head in the piercing is not easily bitten by deformation and rolling in the rolling of the material pipe. The three rollers of the mandrel holding wheel interfere and limit the outer wall of the mandrel, which effectively solves the problem of mandrel vibration during rolling, ensures the stability of the mandrel during rolling, improves the quality of steel pipe rolling, and prolongs the use of the mandrel Service life; set the mandrel supporting wheel to hold up the mandrel, so that the mandrel will not be tilted during the reciprocating movement.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the threading mechanism;

Fig. 3 is a structural schematic diagram of a rotating wheel set;

Fig. 4 is a schematic view of the structure of a V-shaped pallet;

Figure 5 is a schematic diagram of the assembly of the V-shaped pallet;

Figure 6 is a schematic diagram of the installation of the rotating wheel set;

Figure 7 is a schematic diagram of the installation of the holding wheel;

Fig. 8 is a partial enlarged view of Fig. 6;

Fig. 9 is a view from direction A of the installation base in Fig. 6;

Figure 10 is a schematic diagram of idler installation;

Figure 11 is a side view of the roller installation.

In the figure, 1 feed rack, 2 motor, 3 reducer, 4 rotating wheel group, 5 second crank arm, 6 cardan shaft, 7 hinge support, 8 holding wheel, 9 supporting wheel, 10 first crank arm, 11 Mandrel, 12 racks, 13 rollers, 14 gears, 15V-type pallets, 16V-type guide plates, 17 hydraulic cylinders, 18 fixing seats, 19 fixing bolts, 20 adjusting bolts, 21 vertical waist holes, 22 torsion bars, 23 guide column, 24 sliding sleeve, 25 wing plate, 26 mounting seat, 27 third crank arm, 28 waste tube, 29 adjustment plate, 30 twist arm, 101 limit plate, 401 rotating wheel, 402 upper pressure wheel, 801 lower Roller, 802 upper roller.

detailed description

Example 1 A seamless steel pipe rotary feeding mechanism, see Figure 1-10: it includes a feeding frame 1, a lifting base, a rotating wheel set 4, a motor 2 and a reducer 3, and the feeding frame 1 is provided with several rotating wheels Group 4, rotating wheel group 4 comprises rotating wheel 401 and upper pressing wheel 402, and two rotating wheels 401 and an upper pressing wheel 402 outer edge surfaces are close to each other to form the feeding gap of corresponding blank pipe 28 outer wall, described rotating wheel 401 and The axes of the upper pressing wheels 402 are located on three mutually independent planes and are inclined to each other; the rotating wheels 401 or the upper pressing wheels 402 are correspondingly assembled on the feed frame 1 through the mounting base, and the two rotating wheels 401 in the same rotating wheel group 4 Correspondingly distributed on both sides of the feed frame 1, one end of the feed frame 1 is provided with a motor 2 and a reducer 3, and the runners located on the same side of the feed frame 1 are sequentially connected by a cardan shaft 6 and assembled on the reducer 3 above; the axis of the inscribed circle in the feed gap of the rotating wheel group 4 is distributed along the same straight line to form a feed channel, and the two ends of the feed frame 1 are provided with a V-shaped supporting plate 15 or mandrel 11 corresponding to the feed channel; two adjacent A holding wheel 8 or a supporting wheel 9 corresponding to the feeding channel is arranged between the rotating wheel group 4, and the holding wheel 8 includes two lower rollers distributed horizontally and an upper roller located above the gap between the two lower rollers, and the upper roller passes through The first crank arm 10 is correspondingly connected to the side of the feeding frame 1 ; the upper pressing wheel 402 is connected to the side of the feeding frame 1 through the second crank arm 5 .

The inclination angle between the axes of the two rotating wheels 401 is α, -15°>α<15°; the inclination angle between the rotating wheels 401 and the longitudinal direction of the feed frame 1 is β, 1°>β<10°; the upper pressing wheel The inclination angle between 402 and the longitudinal direction of the feeding frame 1 is γ, 1°>β<13°.

The mandrel 11 is correspondingly connected to the threading mechanism. The threading mechanism includes an idler 13, a rack 12 and a gear 14. The rack 12 is correspondingly placed on several horizontally arranged idlers 13. The rack 12 is provided with The gear 14 meshed with it, the gear 14 is connected to the driving mechanism; the rack 12 is distributed along the axis of the feed channel, and its front end is connected with a mandrel 11 extending to the rolling mill, and the end of the feed frame 1 is provided with a corresponding mandrel 11 supporting roller 9.

One end of the V-shaped supporting plate 15 is connected to the feed frame 1 through a connecting ear, and the other end extends to the feeding end of the rolling mill; one end of the connecting ear is connected to the end of the V-shaped supporting plate 15, and the other end is rotated to form a vertical plate body And extend to the feed frame 1, the end of the feed frame 1 is provided with a limit plate 101 that interferes with the end of the V-shaped supporting plate 15; the distance between the V-shaped supporting plate 15 and the feeding end of the rolling mill is 0.8m-2m.

The mounting base includes two sets of mounting seats 26 arranged oppositely. The mounting seats 26 include a fixing seat 18 and an adjusting plate 29. The fixing seat 18 is a square cylinder fixed on the feeding frame 1, and its side walls are provided with two The vertical waist-shaped hole 21, the adjustment plate 29 is a square cylinder matched with the cavity of the fixed seat 18, and its side wall is correspondingly assembled in the vertical waist-shaped hole 21 through the fixing bolt 19; the middle part of the adjustment plate 29 side wall is provided with Stretch to the wing plate 25 above the fixed seat 18, said wing plate 25 is provided with the adjusting bolt 20 pointing to the upper end surface of the fixed seat 18;

The support roller 9 is correspondingly assembled on the hinge support 7, the lower end of the hinge support 7 is connected with a torsion bar 22 extending axially along the support wheel 9, and the end of the torsion bar 22 is connected with a hydraulic cylinder 17 through a torsion arm 30; The mounting base 26 corresponding to the torsion bar 22 is provided on the material frame 1; the number of the supporting wheels 9 is 2-7; There is an upper pressing wheel 402 or an upper roller, and the rear end is hinged with a hydraulic cylinder 17.

The two lower rollers of the holding wheel 8 are correspondingly connected to the same connecting plate through the rotating pair, and the lower part of the connecting plate is slidably assembled on the feed frame 1 through the guide post 23, and the side of the feed frame 1 is hinged with a third crank arm 27 , the front end of the third crank arm 27 is in contact with the lower end of the connecting plate, and the rear end is correspondingly hinged with a hydraulic cylinder 17; the feed frame 1 is provided with a sliding sleeve 24 corresponding to the guide column 23; the number of the holding wheels 8 is 1 --5 groups.

The feed frame 1 is provided with a V-shaped guide plate 16, and the V-shaped guide plate 16 is provided with a gap corresponding to the rotating wheel 401 or the lower roller.

When the waste pipe 28 enters the rotating wheel 401, the hydraulic cylinder 17 drives the second crank arm 5 to drive the upper pressure wheel 402 to press down to the waste pipe 28, and the rack 12 pushes the mandrel 11 to pass through the waste pipe 28 and extend to the working part of the rolling mill. . The motor 2 drags the reducer 3 and the cardan shaft 6 to drive the rotating wheel 401, so that the waste pipe 28 moves forward. The front end of the waste pipe 28 enters the rolling mill with the mandrel 11 for rolling. During rolling, the motor 2 stops, and the hydraulic cylinder 17 drives the first crank arm 10 to drive the upper roller to press against the outer wall of the mandrel 11 to prevent the mandrel 11 from rolling on the waste pipe 28. During rolling, swing with the waste pipe 28 to improve the rolling quality; after the rolling is completed, the mandrel 11 returns with the rack 12 to carry out the next rolling cycle.

The mounting base 26 is provided with a fixing base 18 and an adjusting plate 29, the fixing bolt 19 is loosened, and the height adjustment of the adjusting plate 29 is realized by the adjusting bolt 20 touching the upper end surface of the fixing base 18, so as to realize the angle adjustment of the rotating wheel 401; the third crank arm is provided 27. According to the diameter of the waste pipe 28, the height of the lower roller is adjusted through the third crank arm 27, which is convenient for concentric positioning of the holding wheel 8 and the rotating wheel group 4; a torsion arm 30 is provided, and the torsion arm 30 drives the supporting wheel 9 to lift, which is convenient according to The height of supporting roller 9 needs to be adjusted.

Embodiment 2 This embodiment is basically the same as the above embodiment, the difference is that the motor 2, the hydraulic cylinder 17 of the first crank arm 10, the hydraulic cylinder 17 of the second crank arm 5, the hydraulic cylinder 17 of the third crank arm 27, The hydraulic cylinder 17 of the torsion arm 30 and the driving mechanism of the gear 14 are all equipped with control switches, and the control switches are integrated on the same console, and the same operator can independently operate the above steps.

Claims (9)

1. A seamless steel pipe rotary feeding mechanism, comprising a feeding frame, a lifting base, a rotating wheel set, a motor and a reducer, characterized in that: the feeding frame is provided with a number of rotating wheel sets, and the rotating wheel set includes a rotating wheel and the upper pinch wheel, two rotary wheels and an upper pinch wheel outer edge surface are close to each other to form a feeding gap corresponding to the outer wall of the blank tube, the axes of the rotary wheel and the upper pinch wheel are located in three mutually independent planes and are mutually inclined; The rotating wheel or the upper pressure wheel is correspondingly assembled on the feeding frame through the installation base. The two rotating wheels in the same rotating wheel group are correspondingly or staggered and distributed on both sides of the feeding frame. One end of the feeding frame is equipped with a motor and a reducer. , the rotating wheel group located on the same side of the feed frame is sequentially connected by a cardan shaft and then assembled on the reducer; the inscribed circular axis of the feeding gap of the rotating wheel group is distributed along the same straight line to form a feeding channel. The feeding channel is provided with a V-shaped groove supporting plate; the core rod holding wheel or the core rod supporting wheel corresponding to the feeding channel is arranged between two adjacent rotating wheel groups, and the core rod holding wheel includes two lower rollers distributed horizontally And the upper roller located above the gap between the two lower rollers, the upper roller is correspondingly connected to the side of the feed frame through the first crank arm; the upper pressure wheel is connected to the side of the feed frame through the second crank arm. 2. The seamless steel pipe rotary feeding mechanism according to claim 1, characterized in that: the inclination angle between the axes of the two rotating wheels is α, -15°>α<15°; the longitudinal distance between the rotating wheel and the feed frame The inclination angle between them is β, 1°>β<10°; the inclination angle between the upper pressing wheel and the longitudinal direction of the feed rack is γ, 1°>β<13°. 3. The seamless steel pipe rotary feeding mechanism according to claim 1, characterized in that: the V-shaped groove supporting plate is connected to the feeding frame through a connecting ear, and one end extends to the feeding end of the rolling mill; one end of the connecting ear is connected to At the lower part of the V-groove pallet, the other end is connected to the feed frame. 4. The seamless steel pipe rotary feeding mechanism according to claim 3, characterized in that: the distance between the V-shaped groove supporting plate and the feeding end of the rolling mill is 0.8m-2m. 5. The seamless steel pipe rotary feeding mechanism according to claim 1, characterized in that: the mounting base includes two sets of mounting seats oppositely arranged, the mounting seats include a fixing seat and an adjusting plate, and the fixing seat is fixedly connected to the feeder. The square cylinder on the material rack has two vertical waist-shaped holes on the side wall, the adjustment plate is a square cylinder that matches the inner cavity of the fixing seat, and the side wall is correspondingly assembled in the vertical waist-shaped hole by fixing bolts Inside; the middle part of the side wall of the adjustment plate is provided with a wing plate extending above the fixed seat, and the wing plate is provided with an adjustment bolt pointing to the upper end surface of the fixed seat; the main shaft of the rotating wheel is installed on the upper end of the adjustment plate through a rotating pair. 6. The seamless steel pipe rotary feeding mechanism according to claim 1, characterized in that: the support rollers are correspondingly assembled on the hinge support, and the lower end of the hinge support is connected with a torsion bar extending axially along the support roller. The end of the torsion bar is connected to a hydraulic cylinder through a torsion arm; a mounting seat corresponding to the torsion bar is provided on the feed frame; and the number of supporting wheels is 2-7. 7. The seamless steel pipe rotary feeding mechanism according to claim 1, characterized in that: the middle part of the first crank arm or the second crank arm is hinged on the feed frame, the front end is correspondingly equipped with an upper pressure wheel or an upper roller, and the rear The end is hinged with a hydraulic cylinder. 8. The seamless steel pipe rotary feeding mechanism according to claim 1, characterized in that: the two lower rollers of the holding wheel are correspondingly connected to the same connecting plate through a rotating pair, and the lower part of the connecting plate is slidingly assembled on the guide column On the feeding rack, the side of the feeding rack is hinged with a third crank arm, the front end of the third crank arm is in contact with the lower end of the connecting plate, and the rear end is correspondingly hinged with a hydraulic cylinder; the feeding rack is provided with a corresponding guide post. Sliding sleeve; the number of the holding wheels is 1--5 groups. 9. The seamless steel pipe rotary feeding mechanism according to claim 1, characterized in that: the feeding frame is provided with a V-shaped groove supporting plate, and the V-shaped groove supporting plate is provided with a corresponding rotating wheel or a lower roller. gap.