CN219253669U

CN219253669U - Auxiliary equipment for grinding groove of high-speed wire rough middle rolling mill

Info

Publication number: CN219253669U
Application number: CN202223415275.0U
Authority: CN
Inventors: 顾慎张; 刘鹤; 田付顺; 严冉冉; 周逸
Original assignee: Zenith Steel Group Co Ltd; Changzhou Zenith Special Steel Co Ltd
Current assignee: Zenith Steel Group Co Ltd; Changzhou Zenith Special Steel Co Ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-06-27
Anticipated expiration: 2032-12-20

Abstract

The utility model relates to auxiliary equipment for a grinding groove of a high-speed wire rough middle rolling mill, which comprises the following components: the driving mechanism is suitable for driving one roller of the rolling mill to rotate offline; a grinding mechanism, comprising: the polishing head is arranged in a rolling hole of the rolling mill, and the shape of the polishing head is consistent with that of the rolling groove; one end of the screw rod is provided with the polishing head; the adjusting nut is in threaded connection with the screw rod; the fixed plate is fixed on the inlet guide and is used for horizontally penetrating the other end part of the screw rod; the elastic piece is sleeved on the screw rod and is propped against the screw rod and the fixing plate respectively; according to the scheme, the polishing head of the polishing mechanism is arranged at the rolling groove, and the driving mechanism drives the roller to rotate, so that polishing of the rolling groove is realized.

Description

Auxiliary equipment for grinding groove of high-speed wire rough middle rolling mill

Technical Field

The utility model relates to polishing equipment, in particular to auxiliary equipment for a polishing groove of a high-speed wire rough middle rolling mill.

Background

1. One type commonly used in high speed wire mill roughing and intermediate rolling mills is a twin roll short stress mill; the rolling mill adopts holes with different sizes from large to small on different frames; the rollers in the rolling mill are provided with rolling grooves which are opened according to the hole type requirement; the roll surface of each rolling mill is provided with different numbers of rolling grooves; grinding the groove to be used before each replacement; the current state is that people polish with a hand-held polishing machine, so that the workload is large, dust is large, and the body of staff at the position is poor.

2. Why must the groove be worn? The roller is provided with a plurality of grooves, and during the production process, the pouring groove water of the rolling mill causes corrosion and rust to the rolling groove which is not produced currently; secondly, the newly grooved rolls are somewhat too smooth for some passes; thirdly, the newly grooved roller and the old roller are polluted by oil; in summary, most of the rolling grooves need to be worn before being on line, and the situation that the first few rolling grooves slip during production caused by probability is caused when the rolling grooves are not worn, so that production faults such as steel holding and the like are caused.

3. Purpose of grinding groove: rust on the rolling groove is removed, oil stains on the rolling groove are removed, so that the rolling groove becomes rough to a bit, and the biting friction force is increased.

4. Work load of the existing grinding groove: because of limited working space, staff first removes or moves the prepared guide on the car aside and then polishes the guide at the inlet and outlet sides by a polishing machine. The two rollers are all polished by hand; and after polishing, adjusting the angle of the roller by using a large wrench, and finally polishing the part which is not polished all the time.

In summary, how to polish the rolling groove is an urgent problem to be solved by researchers in the field.

Disclosure of Invention

The utility model aims to solve the technical problems that: how to polish the rolling groove;

in order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model relates to auxiliary equipment for a grinding groove of a high-speed wire rough middle rolling mill, which comprises the following components: the driving mechanism is suitable for driving one roller of the rolling mill to rotate offline; a grinding mechanism, comprising: the polishing head is arranged in a rolling hole of the rolling mill, and the shape of the polishing head is consistent with that of the rolling groove; one end of the screw rod is provided with the polishing head; the adjusting nut is in threaded connection with the screw rod; the fixed plate is fixed on the inlet guide and is used for horizontally penetrating the other end part of the screw rod; the elastic piece is sleeved on the screw rod and is propped against the screw rod and the fixing plate respectively;

in the scheme, the shape of the polishing head is consistent with that of the rolling groove, so that the polishing heads with different shapes can be detachably fixed at the end part of the screw rod, the polishing head is fixed at the end part of the screw rod, the other end of the screw rod penetrates through the fixing plate, the fixing plate plays a supporting role, the screw rod is in a horizontal state, a nut is arranged on the screw rod, an elastic piece is arranged between the fixing plate and the nut, the compression force of the elastic piece is adjusted by adjusting the tightness of the nut, after the polishing head stretches into the rolling groove, one roller is driven to rotate by the driving mechanism, the other roller is static, the polishing head rubs with the inner wall of the rolling groove, the inner wall of the rotating roller is polished, and the polishing head can be always propped against the rolling groove through the elasticity of the elastic piece; after one of the rollers finishes polishing, the driving mechanism is moved to the other roller to drive the other roller to rotate, so that the inner wall of the other rolling groove of the rolling groove is polished; and then complete the whole polishing of the inner wall of the rolling groove.

To illustrate the specific structure of the driving mechanism, the present utility model adopts a driving mechanism comprising: a sleeve adapted for mating connection with an inner bore at the roll stub; the pin hole is formed on the upper part of the pin hole; a connecting plate is fixed on the rotating shaft of the motor; a latch fixed to the connection plate and adapted to be inserted into the latch hole; when the roller is required to rotate, the sleeve is connected with the connecting plate through the bolt and the bolt hole, the sleeve is arranged in an inner hole of the shaft head, and the motor is started to drive the roller to rotate;

the shape of the outer wall of the sleeve is consistent with that of the inner hole, the motor works through the cooperation of the bolt and the bolt groove to transmit the rotating force to the sleeve, and the sleeve transmits the rotating force to the roller to drive the roller to rotate.

The rolling mill comprises a vertical rolling mill and a horizontal rolling mill, when the vertical rolling mill is polished, the sleeve can be connected with a motor under the action of gravity, and when the horizontal rolling mill is polished, the middle part of the connecting plate is provided with a magnet for adsorbing the sleeve

The sleeve adsorbs the sleeve on the connecting plate through magnet, prevents to polish when horizontal rolling mill, and the sleeve breaks away from with the connecting plate.

How to realize the fixation of the fixed plate, the utility model adopts the fixed plate to be in adsorption connection with the inlet guide through the magnet;

the fixed plate is adsorbed on the inlet guide through a magnet.

In order to prevent the motor from rotating when the motor outputs power, the utility model adopts the structure that the outer wall of the motor is provided with a limiting rod which is propped against the shaft head of the other roller.

The limiting rod is propped against the shaft head of the other roller, so that the rotation of the motor is limited, and the rotating force can be transmitted to the sleeve.

The utility model has the beneficial effects that: the utility model relates to auxiliary equipment for a grinding groove of a high-speed wire rough and medium-rolling mill.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a side view of a 610 rolling mill;

FIG. 2 is a top view of a mill inlet guide;

FIG. 3 is an elevation view of a mill inlet guide;

fig. 4 is a hole pattern diagram of the rough intermediate rolling mill nos. 1 to 14:

FIG. 5 is a typical roll face grooving view;

FIG. 6 is a table of roll set parameters for rough intermediate rolling;

FIG. 7 is a three view of the sleeve;

FIG. 8 is a schematic structural view of a drive mechanism;

FIG. 9 is a schematic structural view of a grinding mechanism;

FIG. 10 is a schematic illustration of the engagement of the grinding mechanism with the roller;

in the figure: 1-roller, 2-grinding head, 3-adjusting nut, 4-rolling groove, 5-sleeve, 6-bolt hole, 7-bolt, 8-magnet, 9-speed reducer, 10-motor, 11-connecting plate, 12-spacing rod, 13-connecting nut, 14-lead screw, 15-elastic piece, 16-fixed plate.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.

As shown in fig. 1, fig. 1 is a simplified diagram of a 610 rolling mill; the rolling mill generally comprises a base, 2 rollers 1, a pull rod assembly, a roller gap adjustment and the like; in addition, there are guide beams, water pipes and inlet guides (not shown in the figure), wherein the inlet guide can be simply understood as being installed between the two rolls 1 in the middle of fig. 1. The output parts of the two rollers 1 at the upper end of the drawing 1 are two shaft heads, and the two shaft heads are sleeved by universal shafts during operation; the roller 1 is rotated by a motor driving gear box through a cardan shaft.

The mill grinding groove works normally in an off-line grinding groove; because the grinding groove is a preparation work, the grinding groove must be dried in advance to deal with vehicle changing in various emergency situations; and the grinding groove needs to take a certain time for grinding the groove manually or automatically. The manual grinding groove generally needs 30-60 minutes to be a trolley according to the size of the rolling groove; in summary, the reason is that the groove can only be ground offline, and the production workshop staff can generally carry out groove grinding treatment on the prepared preparation vehicle in the preparation workshop section (at the moment, the rolling mill is provided with an import and export guide); typically, one roll is provided with a plurality of grooves, and the two rolls are symmetrical. Only the currently used pair of rolling grooves needs to be ground; the left and right sides of the pair of rolling grooves are provided with inlet and outlet guides, the front side is provided with a roll gap adjusting device, the inclined side surface is also provided with an arc-shaped spray pipe, and the polishing space is very small under the condition of not rotating a roller; therefore, the common practice is that the inlet and outlet guide Wei Yikai is polished, and the groove surface of a half arc can be polished at one time approximately; and after the half of the roller is polished, the roller is manually rotated to one direction to continue polishing. Until all polishing is finished.

As shown in fig. 2 and 3: this is a top view and elevation of the inlet guide of a 3# rolling mill; the rough rolling comprises 14 rolling mills, and the pass of each rolling mill is different; the size of the guides are also different. The actual situation statistics on site shows that the width of the inlet side of the inlet guide is 215 mm-602.5 mm; the length of the whole inlet guide is 532 mm-1080 mm; these two dimensions are used later when the sanding head is designed to be installed. The designed polishing head 2 can be matched with 14 different rolling mills for installation by adjusting the nut 3 and replacing the polishing head 2; the polishing head extends into the inlet guide, and the size of the polishing head 2 is consistent with the distance (minimum distance) between guide wheels of the inlet guide; the minimum distance between the guide wheels is larger than that of the material, and meanwhile, the roller gap of the preparation section can be required to be adjusted to be minimum when the material is prepared; the size of the sanding head 2 is thus slightly larger than the groove 4. The polishing head 2 belongs to a custom-made polishing head, and the radian and the hole pattern at two sides are kept consistent. Through the above-mentioned process, the sanding head 2 can be passed just from the inlet guide just against the groove 4.

As shown in fig. 4 and fig. 5 and fig. 6, a groove hole pattern diagram of rolling mills 1 to 14 of a certain high-speed wire plant and a grooving schematic diagram of a certain rolling mill are shown. The slotting of each of the stand mills is shown in the table. The position of the grinding channel may not be fixed for each time the mill comprises grinding heads, but a common feature is that the complete rolling hole can be seen from the entrance guard. Is not affected by the adjusting device, the water pipe and the like.

FIG. 7 shows a first part of the design of the utility model, a sleeve 5 being fitted over the head of the roll shaft of an off-line roll; FIG. 7 is a simplified three-view of sleeve 5; the sleeve 5 is divided into two layers, the lower layer is about 15 cm, and the shaft head is provided with a guiding slope about 5 cm; a depth of 15 cm may ensure a 10 cm depth contact. This depth is less than the nesting depth of the normal cardan shaft; the top of the upper layer is provided with two bolt holes 6 for matching connection with bolts 7 of the rotating part. The sleeve 5 has three sizes on the sleeving plane, and the sizes correspond to a 610 rolling mill, a 520 rolling mill and a 430 rolling mill respectively; the distances of the top bolt holes 6 of the three sleeves are consistent, so that a driving mechanism can conveniently drive the rollers 1 with different sizes under the condition of replacing the driving sleeve. For a flat rolling mill and a vertical rolling mill, the sleeve 5 has two states of horizontal and vertical when in use. When standing upright, the upper driving mechanism can stably fall on the sleeve 5 by self weight. The bottom magnet 8 of the driving mechanism can be matched and firmly fixed on the sleeve 5 through the stress of the pin hole when the sleeve is transverse.

As shown in fig. 8: fig. 8 shows a second part of the present utility model, which is a roll driving mechanism mounted on three kinds of sleeves. It is clearly a necessary choice to have the roll 1 turn around in order that the entire turn of the groove can be ground. The offline roll 1 must have a drive mechanism. Considering that the normal rolling mill online no-load current is about 10A (800 KW direct current motor, speed 1300 r/min, rated current 1290A); the large gear box and the universal shaft are driven at the same time of online idling; at the same time, the speed required for grinding the groove is slow, and the speed can be constant and reduced by a speed reducer 9. The motor 10 required by the comprehensive accounting to drive the roller to rotate is very small; it is considered that about 2.2KW is sufficient; the uppermost end of the driving mechanism is a motor 10; the place where the small motor is connected is directly a speed reducer 9, and the speed ratio is more than 25:1. The output speed was controlled at 60 rpm. This speed is sufficient to mill a groove in a short time. The output shaft of the speed reducer 9 is connected with a connecting plate 11, and a bolt 7 matched with the bolt hole 6 is arranged on the connecting plate; at this time, after the connection is completed, the motor 10 is started, the roller 1 can not move with high probability, and the motor 10 with the speed reducer 9 can move reversely at the speed of 60 revolutions per minute. At this time, a limiting rod 12 (not necessarily like a straight rod in the figure, but with an L-shape downwards) needs to be added on the speed reducer 9 or the motor 10, and the limiting rod 12 can prop against the shaft head of the other shaft of the rolling mill. Thus, after the motor 10 itself is restricted from reversing, the motor 10 can drive the roll 1 to rotate. Note that the direction of rotation of the roller 1 must be opposite to the direction of insertion of the sanding head 2. It is otherwise easy to roll the sanding head 2 into the rolling mill.

As shown in fig. 9: fig. 9 shows a third part of the utility model, the sanding head 2 being fitted into the mill inlet guide. The head of the whole device is a polishing head 2, which is a fitting with various sizes. There are 17 sanding heads 2 in total, as seen in the roller table. The arc lines on the two sides of the polishing head 2 are consistent with the corresponding hole patterns. Which sanding head 2 is needed corresponds to the installation. The sanding head 2 is followed by a coupling nut 13 for coupling between the sanding head 2 and the screw 14. That is to say that the same screw 14 can be exchanged for a different sanding head 2. The length of the screw 14 is designed to be 1200mm (the length of the entire inlet guide is 532mm to 1080 mm) according to the range of the guide length. The guide length matching installation of the rolling mill No. 1-14 can be satisfied; the screw rod is also provided with an adjusting nut 3. The function of this is that after the sanding head 2 has been mounted against the groove 4, the nut 3 is further adjusted to control the degree of compression of the spring 15 (elastic element). And then a certain pressure is applied between the polishing head 2 and the rolling groove 4 through the spring 15, so that polishing is more effective. The rear end of the screw rod 15 is provided with a strip-shaped fixing plate 16; the middle of the fixing plate 16 is provided with a hole which is slightly bigger than the screw rod 15. The screw 15 passes through the hole of the fixing plate 16 and the two are not hard-connected. The fixing plate 16 only plays a role of supporting the tail of the screw 15. The head of the screw rod 16 is a polishing head 2 which is clamped between two rollers 1 during operation, and the rolling groove 4 has a lifting effect on the polishing head. The two ends of the head and the tail are supported, so that the screw rod 16 can be stably transversely arranged in the inlet guide. The fixing plate 16 is attracted to the inlet side end face of the inlet guide through the magnet 8. The size of the opening end face of the inlet guide is 215 mm-602.5 mm. The length of the fixing plate 16 is designed to be 610mm and the width is 100 mm. Strong magnets 8 of 250mm are respectively arranged on two sides of the fixed plate. Is used for being adsorbed on the end face of the inlet guide. The adsorption force only needs to be larger than the applied pressure of the polishing head 2. The polishing head 2 only needs to grind off surface rust and the like; so that no too much pressure is required; a common strong magnet is just enough.

Fig. 10 is a simplified top view of the entire device. The sleeve 6 and the drive mechanism are mounted on the axle head for driving one roll 1. The polishing device is installed in the inlet guide and is fixed by being adsorbed on the end face of the guide through the tail fixing plate 16. And a certain pressure is applied by the adjusting nut 3 to enable the whole polishing head 2 to prop against the rolling groove 4. The reaction force to the grinding head 2 when the rolling groove 4 is reversed also acts directly on the spring 15 without affecting the position of the tail fixing plate 16.

With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims

1. An auxiliary assembly of mill grinding groove in rough middle rolling mill of high line, characterized by, comprising:

the driving mechanism is suitable for driving one roller of the rolling mill to rotate offline;

a grinding mechanism, comprising:

the polishing head is arranged in the rolling hole of the rolling mill, and the shape of the polishing head is consistent with that of the rolling groove;

one end of the screw rod is provided with the polishing head;

the adjusting nut is in threaded connection with the screw rod;

the fixed plate is fixed on the inlet guide and is used for horizontally penetrating the other end part of the screw rod;

and the elastic piece is sleeved on the screw rod and is respectively propped against the screw rod and the fixing plate.

2. An auxiliary device for a mill grinding bowl of a high-speed rough and medium rolling mill according to claim 1, wherein said driving mechanism comprises:

a sleeve adapted for mating connection with an inner bore at the roll stub; the pin hole is formed on the upper part of the pin hole;

a connecting plate is fixed on the rotating shaft of the motor;

a latch fixed to the connection plate and adapted to be inserted into the latch hole;

when the roller is required to rotate, the sleeve is connected with the connecting plate through the bolt and the bolt hole, the sleeve is arranged in the inner hole of the shaft head, and the motor is started to drive the roller to rotate.

3. An auxiliary device for a mill grinding groove of a high-speed wire rough and medium rolling mill according to claim 2, wherein the middle part of the connecting plate is provided with a magnet for adsorbing the sleeve.

4. The apparatus of claim 1, wherein the fixed plate is attached to the inlet guide by a magnet.

5. The auxiliary device for the grinding groove of the high-speed wire rough and medium rolling mill according to claim 2, wherein a limiting rod is arranged on the outer wall of the motor, and the limiting rod is propped against the shaft head of the other roller.