CN211360074U - Strip steel tail pressing device and strip cold rolling system of rolling mill - Google Patents

Abstract

The utility model provides a strip steel tail pressing device and a strip steel cold rolling system of a rolling mill. The strip steel tail pressing device of the rolling mill comprises a roller frame body, an upper roller side-by-side mechanism installed on the roller frame body, a lower roller side-by-side mechanism and The pressing drive mechanism; the side-by-side mechanism of the upper rollers includes a first upper roller and a second upper roller, and an upper roller gap is arranged between the first upper roller and the second upper roller; the side-by-side mechanism of the lower rollers includes a first lower roller and a second lower roller For rollers, a lower roller gap is set between the first lower roller and the second lower roller; and along the material flow direction, the first upper roller, the first lower roller, the second upper roller and the second lower roller are distributed in sequence; the pressing drive The mechanism is used to drive the upper roller side-by-side mechanism and the lower roller side-by-side mechanism to be relatively close to or away from each other. The utility model alleviates the technical problem of poor stability of the back tension provided by the rolling equipment to the strip after the strip is drifted off during the rolling process.

Description

Strip steel tail pressing device and strip cold rolling system of rolling mill

technical field

The utility model relates to the technical field of cold rolling production lines, in particular to a strip steel tail pressing device of a rolling mill and a strip steel cold rolling system.

Background technique

At present, reversible rolling refers to the rolling process in which the strip steel is reciprocated on the rolling mill for multiple passes of reduction deformation, and finally the thickness of the finished product is obtained. The steel coil is sent to the uncoiler by the steel coil conveying equipment. In the first pass, the uncoiler is uncoiled, and the lead of the strip passes through the rolling mill and enters the post-coiler for coiling. The strip tension before and after the rolling process is provided by the uncoiler, the rolling mill and the post-coiler. At the end of the first pass of rolling, when the uncoiling is completed, the tailed strip will leave the coiler and move to the front coiler on the entrance side of the mill. , the strip is rolled back and forth between the front and rear coilers and rolling mills.

In the first rolling process, after the strip is uncoiled and the tail reaches the section before the front coiler, the strip tail will be in a free tension-free state. For subsequent rolling, post tension is applied to the tail of the strip.

Usually, a strip pressure plate device is used to provide back tension for the steel plate after the uncoiler is uncoiled. , to generate a certain frictional force between the steel plate and the hardwood, so as to generate post tension between the steel plate and the rolling mill after the uncoiling and tailing, and stabilize the rolling of the first pass of the single stand.

In order to provide greater back tension and reduce the damage to the surface of the strip steel, the material used for the upper and lower pressing plates in the strip pressing plate device is hardwood. However, compared with steel, the hardwood is softer, and friction will bring about rapid wear of the hardwood, making the friction surface condition worse, causing the friction coefficient between the two to be unstable, and reducing the stability of the back tension; during the working process Chipping can also occur in medium hardwoods. Therefore, using a strip pressing device made of hardwood, the stability of the post tension applied to the strip is poor, which easily affects the quality of the rolling section, reduces the yield, and requires frequent replacement of the hardwood.

Utility model content

The purpose of this utility model is to provide a strip tail pressing device of a rolling mill and a strip cold rolling system, so as to alleviate the stability of the back tension provided by the rolling equipment to the strip after the strip is tailed off during the rolling process. Poor technical issues.

Above-mentioned purpose of the present utility model can adopt following technical scheme to realize:

The utility model provides a strip steel tail pressing device of a rolling mill, comprising: a roller frame body, an upper roller side-by-side mechanism, a lower roller side-by-side mechanism and a pressing driving mechanism mounted on the roller frame body; the upper roller side-by-side mechanism comprises: a first upper roller and a second upper roller, an upper roller gap is arranged between the first upper roller and the second upper roller; the side-by-side mechanism of the lower rollers includes a first lower roller and a second lower roller, the A lower roller gap is arranged between the first lower roller and the second lower roller; and along the material flow direction, the first upper roller, the first lower roller, the second upper roller and the second upper roller The lower rollers are distributed in sequence; the pressing driving mechanism is used to drive the upper roller side-by-side mechanism and the lower roller side-by-side mechanism to be relatively close to or away from each other.

In a preferred embodiment, the axis of the first upper roller, the axis of the second upper roller, the axis of the first lower roller and the axis of the second lower roller are all perpendicular to the material flow direction .

In a preferred embodiment, the lower side of the upper roller side-by-side mechanism is connected with a limit wire for abutting with the lower roller side-by-side mechanism, and/or the upper side of the lower roller side-by-side mechanism is connected with The position-limiting jack wire abutted by the side-by-side mechanism of the upper rollers.

In a preferred embodiment, the upper roller side-by-side mechanism includes an upper bearing seat for mounting the first upper roller and the second upper roller, and the lower roller side-by-side mechanism includes an upper bearing seat for mounting the first lower roller The roller and the lower bearing seat of the second lower roller, the upper bearing seat and the lower bearing seat are all mounted on the roller frame body.

In a preferred embodiment, the lower bearing seat is fixed on the roller frame body; the pressing driving mechanism includes a tail pressing hydraulic cylinder installed on the roller frame body, and the tail pressing hydraulic cylinder is connected to the roller frame body. The upper bearing seat is connected to drive the upper roller side-by-side mechanism to move up and down.

In a preferred embodiment, the roller frame body is detachably connected with locking plates, and the locking plates are respectively abutted with the upper bearing seat and the lower bearing seat to define the upper bearing seat. The axial position and the axial position of the lower bearing housing.

In a preferred embodiment, the side-by-side mechanism of the lower rolls is provided with roll changing rollers; the strip tail pressing device of the rolling mill comprises a roll changing beam frame arranged under the roll changing rollers and a roll changing beam frame arranged under the roll changing beam frame Connected jacking hydraulic cylinder, the roller changing beam frame is provided with a sliding surface extending along the axis direction of the first lower roller, and the jacking hydraulic cylinder can drive the roller changing beam frame to move upward to The sliding surface is in contact with the roll changing roller.

In a preferred embodiment, the end of the roller changing beam frame is provided with an ejector wire for pushing the lower roller side-by-side mechanism to move along the sliding surface.

In a preferred embodiment, the top of the lower bearing seat is provided with a raised structure; the strip tail pressing device of the rolling mill includes a roll changing lock frame, and the roll changing lock frame can be locked with the raised structure fit to connect with the lower bearing housing.

In a preferred embodiment, the strip tail pressing device of the rolling mill includes a traverse device, and the traverse device is connected with the roll frame body for driving the roll frame body along the first lower roll. move in the direction of the axis.

In a preferred embodiment, the traverse device includes a base, a traverse slide rail mounted on the base, and a traverse hydraulic cylinder, the roller frame body is mounted on the traverse slide rail, and the traverse hydraulic pressure The cylinder is drivingly connected with the roller frame body.

In a preferred embodiment, the strip end pressing device of the rolling mill comprises a roll changing stand, the traverse device can drive the roll frame body to move to be connected with the roll changing stand, and the upper rolls are side by side The mechanism and the lower roll side-by-side mechanism can be moved to the roll change stand.

In a preferred embodiment, the strip steel tail pressing device of the rolling mill includes a drag chain, a drag chain frame and a cross beam, the drag chain frame is fixedly arranged; the first end of the cross beam is fixed to the roller frame body, and The second end of the beam extends to the outer side of the roller frame body close to the roller changing platform; the first end of the drag chain is connected to the drag chain frame, and the second section of the drag chain is connected on the beam.

The utility model provides a strip steel cold rolling system, comprising: a reversing rolling mill and the above-mentioned strip steel tail pressing device of the rolling mill, wherein the strip steel tail pressing device of the rolling mill is arranged on the feeding side of the reversing rolling mill.

The features and advantages of the present utility model are:

After the strip is uncoiled and tailed, the strip tail of the strip moves to between the upper roller side-by-side mechanism and the lower roller side-by-side mechanism in the strip tail pressing device of the rolling mill, and the pressing drive mechanism drives the upper roller side-by-side mechanism and the lower roller side-by-side mechanism. The mechanisms are relatively close together until the first and second upper rollers abut the upper surface of the strip, and the first and second lower rollers abut the lower surface of the strip.

Since there is an upper roll gap between the first upper roll and the second upper roll, a lower roll gap is set between the first lower roll and the second lower roll, and the first upper roll, the first lower roll, and the second upper roll and the second lower roller are sequentially distributed along the material flow direction, so that the strip steel will be elastically deformed under the action of the pressing force. Stable back tension.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is the axonometric view of the strip tail pressing device of the rolling mill provided by the utility model in the rolling tail position;

Fig. 2 is the axonometric view of the strip tail pressing device of the rolling mill provided by the utility model in the maintenance position;

Fig. 3 is the front view of the strip tail pressing device of the rolling mill shown in Fig. 2;

Fig. 4 is a side view of the strip tail pressing device of the rolling mill shown in Fig. 2;

5 is a schematic diagram of each roller in the strip tail pressing device of the rolling mill provided by the utility model;

6 is a side view of the side-by-side mechanism of the upper rollers in the strip tail pressing device of the rolling mill provided by the utility model;

FIG. 7 is a front view of the upper roller side-by-side mechanism shown in FIG. 6;

FIG. 8 is a side view of the side-by-side mechanism of the lower rollers in the strip tail pressing device of the rolling mill provided by the utility model;

FIG. 9 is a front view of the lower roller side-by-side mechanism shown in FIG. 8;

10 is a schematic structural diagram of a roll-changing beam frame in a strip tail pressing device of a rolling mill provided by the utility model;

Fig. 11 is the axonometric view of the first angle of view of the roll changing lock frame in the strip tail pressing device of the rolling mill provided by the utility model;

Fig. 12 is the axonometric view of the second angle of view of the roll changing lock frame in the strip tail pressing device of the rolling mill provided by the utility model;

Fig. 13 is a schematic diagram of the cold strip rolling system of the rolling mill provided by the present invention.

Description of reference numbers:

10, roller frame body; 11, frame body; 12, sliding seat; 13, bearing seat; 14, locking plate; 100, material flow direction;

110. Side-by-side mechanism of upper rollers; 111, First upper roller; 112, Second upper roller; 113, Upper bearing seat; 114, Coupling shaft; 115, Pin shaft; 116, Upper roller gap;

120. Lower roller side-by-side mechanism; 121, First lower roller; 122, Second lower roller; 123, Lower bearing seat; structure;

130. Pressing the drive mechanism; 131. Pressing the tail hydraulic cylinder;

140. Roller changing beam frame; 141. Sliding surface; 142. Ejector wire;

150. Lifting hydraulic cylinder;

160, roller changing lock frame; 161, protrusion; 162, protruding edge; 163, boss;

20, traverse device; 21, base; 22, traverse hydraulic cylinder; 23, traverse slide rail;

30. Roll changing bench;

401, beam; 402, drag chain; 403, drag chain frame;

1. Uncoiler; 2. Front coiler; 3. Strip tail pressing device; 4. Reversible rolling mill; 5. Post-coiler.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example 1

The utility model provides a strip steel tail pressing device of a rolling mill, as shown in Figures 1, 2 and 5, the strip steel tail pressing device of the rolling mill comprises: a roll frame body 10; The roller side-by-side mechanism 110, the lower roller side-by-side mechanism 120 and the pressing drive mechanism 130; the upper roller side-by-side mechanism 110 includes a first upper roller 111 and a second upper roller 112, and there is provided between the first upper roller 111 and the second upper roller 112 The upper roller gap 116; the lower roller side-by-side mechanism 120 includes a first lower roller 121 and a second lower roller 122, and a lower roller gap 126 is provided between the first lower roller 121 and the second lower roller 122; and as shown in FIG. 5, Along the material flow direction 100, the first upper roller 111, the first lower roller 121, the second upper roller 112 and the second lower roller 122 are distributed in sequence; the pressing drive mechanism 130 is used to drive the upper roller side-by-side mechanism 110 and the lower roller side-by-side mechanism 120 is relatively close or far away.

After the strip is uncoiled and tailed, the strip tail of the strip moves between the upper roller side-by-side mechanism 110 and the lower roller side-by-side mechanism 120, and the pressing drive mechanism 130 drives the upper roller side-by-side mechanism 110 and the lower roller side-by-side mechanism 120 are relatively close to each other until the first An upper roller 111 and a second upper roller 112 abut the upper surface of the strip, and the first lower roller 121 and the second lower roller 122 abut the lower surface of the strip.

Since there is an upper roll gap 116 between the first upper roll 111 and the second upper roll 112, a lower roll gap 126 is set between the first lower roll 121 and the second lower roll 122, and the first upper roll 111, the first roll The lower rollers 121, the second upper rollers 112 and the second lower rollers 122 are sequentially distributed along the material flow direction 100, so that the strip steel will undergo elastic deformation under the action of the pressing force. The first upper roller 111, the first lower roller 121, the first The second upper roller 112 and the second lower roller 122 apply relatively stable back tension to the strip.

Compared with the strip pressing device using hardwood material, the strip pressing device of this rolling mill is quite different. In the strip pressure plate device made of hardwood, the upper platen and the lower platen are respectively in plane contact with the strip steel. In actual production, there are differences in the incoming state of the strip steel, and there will be waves or water and oil on the strip steel. The shape and surface foreign matter have a great influence on the contact state between the upper and lower platens and the steel plate, which changes the friction conditions and makes the post tension more unstable; Tension, heat generation will occur, which will adversely affect the stability of the post tension.

The material of each roller in the strip tail pressing device can be 9Cr2Mo. According to the increase of the material and thickness of the production specifications, the spacing between the rollers should be increased to ensure a certain wrap angle; the outer diameter of each roller can remain unchanged within a certain range of plate changes, mainly to meet the structural and space requirements.

In the strip tail pressing device of the rolling mill, the first upper roll 111 and the second upper roll 112 are located above the first lower roll 121 and the second lower roll 122, and a material is formed between the side-by-side mechanism 110 of the upper rollers and the side-by-side mechanism 120 of the lower rollers. The flow roll gap, the first upper roller 111 and the second upper roller 112 in the upper roller side-by-side mechanism 110, and the first lower roller 121 and the second lower roller 122 in the lower roller side-by-side mechanism 120 form an interlaced structure, which is beneficial to Make the back tension more stable; the first upper roller 111, the second upper roller 112, the first lower roller 121 and the second lower roller 122 are in rolling contact with the strip steel, which reduces the number of rollers compared to sliding contact The wear and heat received are beneficial to keep the contact conditions stable, improve the stability of the back tension, and prolong the operating life of each roller.

After the strip is flicked, the direction of the tail of the strip pointing to the head is the material flow direction. As shown in FIG. 5 , the axis of the first upper roller 111 , the axis of the second upper roller 112 , the axis of the first lower roller 121 and the axis of the second lower roller 122 are all perpendicular to the material flow direction 100 . Preferably, the axis of the first upper roller 111, the axis of the second upper roller 112, the axis of the first lower roller 121 and the axis of the second lower roller 122 are all parallel to the horizontal plane. The feeding side of the strip pressing device of the rolling mill is provided with a feeding guide plate, so as to guide the strip to enter the material flow roll gap.

In an embodiment of the present invention, the upper roller side-by-side mechanism 110 includes an upper bearing seat 113 disposed at both ends thereof, and both ends of the first upper roller 111 and both ends of the second upper roller 112 are respectively mounted on the upper bearings through bearings. The seat 113; the lower roller side-by-side mechanism 120 includes a lower bearing seat 123 arranged at both ends thereof, the two ends of the first lower roller 121 and the two ends of the second lower roller 122 are respectively mounted on the lower bearing seat 123 through bearings; the upper bearing seat 113 and the lower bearing seat 123 are both mounted on the roller frame body 10 .

As shown in FIG. 3 , the roller frame body 10 is provided with a frame hole, and the upper bearing seat 113 and the lower bearing seat 123 are arranged in the frame hole and are in contact with the side walls of the frame hole to define the upper roller side-by-side mechanism 110 and the lower bearing seat 123 . The radial position of the lower roller side by side mechanism 120 . The roller frame body 10 is connected with a locking plate 14 which abuts with the upper bearing seat 113 and the lower bearing seat 123 respectively to define the axial position of the upper bearing seat 113 and the axial position of the lower bearing seat 123 .

At least one of the upper roller side-by-side mechanism 110 and the lower roller side-by-side mechanism 120 can slide up and down in the roller frame body 10 to realize pressing and releasing the strip. As shown in FIG. 3 , the roller frame body 10 is provided with a support seat 13, and the lower bearing seat 123 is connected to the support seat 13 by bolts, so that the position of the lower roller side-by-side mechanism 120 is relatively fixed; The tail pressing hydraulic cylinder 131 of the body 10 is connected with the upper bearing seat 113 to drive the upper roller side-by-side mechanism 110 to move up and down. 6 and 7, the upper bearing seat is provided with a coupling shaft 114 and a pin shaft 115. The pin shaft 115 is connected to the upper bearing seat 113 along the axial direction of the first upper roller 111 and passes through the coupling shaft 114 to connect The lower end of the coupling shaft 114 is connected to the upper bearing seat 113 , and the upper end of the coupling shaft 114 is connected to the piston rod of the tail pressing hydraulic cylinder 131 . Preferably, the pressing driving mechanism 130 includes two tail pressing hydraulic cylinders 131, and the tail pressing hydraulic cylinders 131 are respectively connected with the upper bearing seats 113 located at both ends.

Further, as shown in FIGS. 6 and 7 , the lower side of the upper roller side-by-side mechanism 110 is connected with a limit wire 124 for abutting with the lower roller side-by-side mechanism 120 , and/or as shown in FIGS. 8 and 9 . , the upper side of the lower roller side-by-side mechanism 120 is connected with a limit wire 124 for abutting with the upper roller side-by-side mechanism 110, so as to limit the limit position of the downward movement of the upper roller side-by-side mechanism 110 and control the pressure on the strip. The size of the tightness.

The structure of each production equipment in the rolling line is usually relatively compact, and the distance between the equipment is small. Therefore, the inventor has further improved the strip tail pressing device of the rolling mill: the strip tail pressing device of the rolling mill includes a horizontal The traverse device 20 is connected with the roll frame body 10 for driving the roll frame body 10 to move along the axial direction of the first lower roll 121, so that the roll frame body 10 is between the rolling end position and the inspection position switch. When the roll frame body 10 moves to the rolling tail position, the roll frame body 10 and each of the rolls therein cooperate with the rolling mill in the rolling line to provide back tension; when the roll frame body 10 moves to the inspection position, The roll frame body 10 leaves the rolling line, freeing up space for the front and rear equipment of the strip tail pressing device of the rolling mill, so as to facilitate the maintenance of the strip tail pressing device and the front and rear equipment of the rolling mill.

Further, the traverse device 20 includes a base 21 , a traverse slide rail 23 mounted on the base 21 and a traverse hydraulic cylinder 22 , the roller frame body 10 is mounted on the traverse slide rail 23 , the traverse hydraulic cylinder 22 and the roller frame body 10 drive connection. As shown in FIG. 1 , after the piston rod of the traverse hydraulic cylinder 22 is extended, the roller frame body 10 is pushed to the rolling end position. The force along the material flow direction 100 and the overturning moment on the roller frame body 10 are all borne by the traverse slide rails 23 . The end of the base 21 is provided with a fixed baffle plate to constrain the lateral position of the roller frame body 10 . The roller frame body 10 includes a sliding seat 12 and a frame body 11 fixed above the sliding seat 12 , and the sliding seat 12 is fixed on the slider on the traverse sliding rail 23 .

After removing the locking plate 14, the bolts connecting the lower bearing seat 123 and the supporting seat 13, and the coupling shaft 114 and the pin shaft 115 connecting the upper bearing seat 113 and the tail pressure cylinder 131, the upper roller side-by-side mechanism 110 and the lower roller side-by-side mechanism 120 can be removed from the frame holes for easy replacement of individual rollers.

As shown in FIG. 2 and FIG. 3 , the strip tail pressing device of the rolling mill includes a roll changing stand 30, and the traverse device 20 can drive the roll frame body 10 to move to be connected with the roll changing stand 30, so as to facilitate the parallel arrangement of the upper rolls The side-by-side mechanism 110 and the lower rollers 120 are pulled along the axis direction of the first lower roller 121 to the roller changing table 30, which reduces the difficulty of operation.

In an embodiment of the present invention, the lower roller side-by-side mechanism 120 is provided with a roll changing roller 125; The connected jacking hydraulic cylinder 150, the roller changing beam frame 140 is provided with a sliding surface 141 extending along the axial direction of the first lower roller 121, and the jacking hydraulic cylinder 150 can drive the roller changing beam frame 140 to move upward to the sliding surface 141 is in contact with the roller changing roller 125 .

When disassembling, first remove the bolts connecting the lower bearing seat 123 and the bearing seat 13; then the lifting hydraulic cylinder 150 drives the roller changing beam frame 140 to rise, the sliding surface 141 contacts the roller changing roller 125, and the roller changing beam frame 140 carries the lower rollers Side-by-side mechanism 120 ; after removing the locking plate 14 , the side-by-side mechanism 120 of the lower rollers can be pushed or pulled to move along the axis of the first lower roller 121 on the sliding surface 141 .

Specifically, when the jacking hydraulic cylinder 150 contracts, a gap is provided between the sliding surface 141 and the roller changing roller 125 . The top of the roller changing table 30 is provided with a track surface for carrying the roller changing rollers 125; when the jacking hydraulic cylinder 150 is extended, the sliding surface 141 and the track surface are located on the same plane, so that the lower roller side-by-side mechanism 120 can be moved from The sliding surface 141 is pulled to the roller changing platform 30; preferably, when the jacking hydraulic cylinder 150 is extended, the roller changing beam frame 140 lifts the lower roller side-by-side mechanism 120 upward for a certain distance, so that the lower bearing seat 123 is disengaged The support base 13 is convenient for pulling the lower roller side-by-side mechanism 120 to move.

The roll changing beam frame 140 includes two parallel-connected steel beams. Further, as shown in FIG. 3 and FIG. 10 , the end of the roller changing beam frame 140 away from the roller changing platform 30 is provided with an ejector wire 142, and when the ejector wire 142 is rotated, the ejection wire 142 will move along the first The axial movement of the lower roller 121 pushes the lower roller side-by-side mechanism 120 to move along the sliding surface 141 , which reduces the difficulty of pulling the lower roller side-by-side mechanism 120 out of the frame hole.

In an embodiment of the present invention, the lower bearing seat 123 and the upper bearing seat 113 are provided with groove structures 127; the strip tail pressing device of the rolling mill further includes a roll changing lock frame 160, as shown in FIG. 11 and FIG. 12 . , the roller changing lock frame 160 is provided with a protrusion 161, and the groove structure 127 cooperates with the protrusion 161 to form a tenon-and-mortise structure; the roller changing lock frame 160 is provided with a protruding edge portion 162 and The bosses 163 are used to withstand the outer surface of the upper and lower bearing seats. Since the inner bearing seat adopts spherical roller bearings, the upper roller side-by-side mechanism 110 and the lower roller side-by-side mechanism 120 of the upper and lower double rollers are locked by the roller changing lock frame 160. Buckling into one piece can prevent the bearing seat from falling along the direction of the roller axis when pulling out, so that pulling the roller changing lock frame 160 can drive the lower roller side-by-side mechanism 120 to move out of the roller frame body 10 together. Preferably, a pull ring is provided on the roller changing lock frame 160 .

Further, when disassembling, install the roller changing lock frame 160 on the top of the lower bearing seat 123; then the tail pressing hydraulic cylinder 131 drives the upper roller side-by-side mechanism 110 to move downward until the upper bearing seat 113 is in contact with the roller changing lock frame 160; Then remove the coupling shaft 114 and the pin shaft 115 connecting the upper bearing seat 113 and the tail pressing hydraulic cylinder 131, so that the upper bearing seat 113 falls on the roller changing lock frame 160. At this time, the upper bearing seat 113 and the lower bearing seat 123 are replaced by The roller lock frames 160 are connected together so that by pulling the roller change lock frame 160, the upper roller side by side mechanism 110 and the lower roller side by side mechanism 120 are pulled together onto the roller changing table 30.

The tail pressing hydraulic cylinder 131 and the jacking hydraulic cylinder 150 are connected with pipelines, and the pipelines will move with the movement of the moving parts of the device. Due to the compactness of the front and rear equipment and the limited space between the equipment, centralized planning of the pipeline is required, and pipe clamps are used to prevent interference. As shown in Figures 1 to 4, the strip tail pressing device of the rolling mill includes a drag chain 402, a drag chain frame 403 and a beam 401. The piping is arranged on the beam 401 so as to enter the drag chain 402, and the drag chain frame 403 is fixed Set on the ground or at the end of the traverse device 20 close to the roll changing table 30; the first end of the cross beam 401 is fixed to the roll frame body 10, and the second end of the cross beam 401 extends to the roll frame body 10 close to the roll changing table The outer side of the frame 30; the first end of the drag chain 402 is connected to the drag chain frame 403, and the second section of the drag chain 402 is connected to the beam 401. The cross beam 401 leads the pipeline out of the movable range of the roller frame body 10, and then guides it into the drag chain 402, so as to avoid the interference between the pipeline and the roller frame body 10 and peripheral equipment.

Embodiment 2

The utility model provides a strip steel cold rolling system. The strip steel cold rolling system includes: a reversing rolling mill 4 and the above-mentioned strip steel pressing device 3 of the rolling mill. On the feed side, it provides back tension for the tail of the strip after flicking.

Specifically, the strip cold rolling system also includes an uncoiler 1, a front coiler 2 and a rear coiler 5. Please refer to Figure 13, the uncoiler 1, the front coiler 2, the strip tail pressing device 3, and the reversing rolling mill. 4 and the post-coiler 5 are distributed in sequence along the flow direction 100. During the first pass of rolling, tension is firstly carried out by the uncoiler 1 and the post-coiler 5 on the outlet side of the reversing mill 4; Between the reversing rolling mill 4 and the reversing rolling mill 4, there will be a long distance in a tension-free state. At this time, the above-mentioned strip tail pressing device 3 works; , the belt tail retracts to the front coiler 2 and is clamped by the reel jaws of the front coiler 2. At this time, the tail pressing device no longer works. The front coiler 2, the reversing rolling mill 4 and the rear coiler 5 to form a tension closed loop. The reversing rolling mill 4 may be a single-stand reversing rolling mill or a double-stand reversing rolling mill.

The above are only a few embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims (14)

1. A strip steel tail pressing device of a rolling mill is characterized by comprising: the roller frame body, an upper roller side-by-side mechanism, a lower roller side-by-side mechanism and a pressing driving mechanism are arranged on the roller frame body; the upper roller side-by-side mechanism comprises a first upper roller and a second upper roller, and an upper roller gap is formed between the first upper roller and the second upper roller; the lower roller side-by-side mechanism comprises a first lower roller and a second lower roller, and a lower roller gap is formed between the first lower roller and the second lower roller; and the first upper roller, the first lower roller, the second upper roller and the second lower roller are distributed in sequence along the material flow direction;

the pressing driving mechanism is used for driving the upper roller side-by-side mechanism and the lower roller side-by-side mechanism to be relatively close to or far away from each other.

2. The strip tailing press of a rolling mill of claim 1, wherein the axis of the first upper roll, the axis of the second upper roll, the axis of the first lower roll, and the axis of the second lower roll are all perpendicular to the flow direction.

3. The strip steel tailing pressing device of the rolling mill as claimed in claim 2, wherein a limiting jackscrew for abutting against the lower roller side-by-side mechanism is connected to the lower side of the upper roller side-by-side mechanism, and/or a limiting jackscrew for abutting against the upper roller side-by-side mechanism is connected to the upper side of the lower roller side-by-side mechanism.

4. The strip tailing press of a rolling mill of claim 1, wherein the upper roller side-by-side mechanism includes an upper bearing housing for mounting the first upper roller and the second upper roller, and the lower roller side-by-side mechanism includes a lower bearing housing for mounting the first lower roller and the second lower roller, the upper bearing housing and the lower bearing housing being mounted to the roller frame body.

5. The strip steel tailing device of a rolling mill according to claim 4, wherein the lower bearing seat is fixedly provided to the roller frame body;

the pressing driving mechanism comprises a tail pressing hydraulic cylinder arranged on the roller frame body, and the tail pressing hydraulic cylinder is connected with the upper bearing seat to drive the upper roller side-by-side mechanism to move up and down.

6. The strip tailing press of a rolling mill of claim 4, wherein a locking plate is detachably attached to the roller frame body, the locking plate abutting against the upper bearing housing and the lower bearing housing, respectively, to define an axial position of the upper bearing housing and an axial position of the lower bearing housing.

7. The strip steel tailing device of a rolling mill according to claim 6, wherein the lower roll side-by-side mechanism is provided with roll changing rollers;

the belted steel of rolling mill is pressed the tail device including locating roll change gyro wheel below roll change crossbeam frame and with the jacking pneumatic cylinder that roll change crossbeam frame is connected, be equipped with on the roll change crossbeam frame and follow the glide plane of the axis direction extension of first bottom roll, and, the jacking pneumatic cylinder can drive roll change crossbeam frame rebound extremely the glide plane with roll change gyro wheel butt.

8. The strip tailing press of a rolling mill as claimed in claim 7, wherein an end portion of said roll changing cross beam is provided with an ejector pin for pushing said lower rolls side by side mechanism to move along said sliding surface.

9. The strip steel tailing pressing device of the rolling mill as claimed in claim 7, wherein a convex structure is arranged at the top of the lower bearing seat; the strip steel tail pressing device of the rolling mill comprises a roll changing lock frame, and the roll changing lock frame can be matched with the protruding structure in a locking mode so as to be connected with the lower bearing seat.

10. The strip tailing press for a rolling mill of claim 1, comprising a traverse device connected to the roller frame body for driving the roller frame body to move in an axial direction of the first lower roller.

11. The strip tailing press for a rolling mill of claim 10, wherein the traverse device comprises a base, a traverse slide mounted to the base, and a traverse hydraulic cylinder, the roller frame body being mounted to the traverse slide, the traverse hydraulic cylinder being drivingly connected to the roller frame body.

12. The strip tailing press of a rolling mill of claim 11, comprising a roll changing stand, wherein the traverse device can drive the roller frame body to move to be connected with the roll changing stand, and wherein the upper roller side-by-side mechanism and the lower roller side-by-side mechanism can move to the roll changing stand.

13. The strip steel tailing pressing device of the rolling mill according to claim 12, wherein the strip steel tailing pressing device of the rolling mill comprises a drag chain, a drag chain frame and a cross beam, and the drag chain frame is fixedly arranged; a first end of the cross beam is fixed to the roller frame body, and a second end of the cross beam extends to the outer side of the roller frame body near the roll changing table; the first end of the drag chain is connected to the drag chain frame, and the second end of the drag chain is connected to the cross beam.

14. A cold strip rolling system, comprising: a reversible rolling mill and a strip tailing device of a rolling mill according to any one of claims 1 to 13, which is arranged on the feed side of the reversible rolling mill.

Images