CN219965988U - Roll changing device and steel rolling production line - Google Patents

Abstract

The utility model discloses a roll changing device and a steel rolling production line, wherein the roll changing device comprises a roll changing vehicle, a transfer vehicle and a chain type transfer assembly, the roll changing vehicle is movably arranged in a rolling mill assembly, a roll system is arranged on the roll changing vehicle, the transfer vehicle is arranged at the outer side of the rolling mill assembly, the transfer vehicle is in butt joint with the roll changing vehicle and can drive the roll system together to move in or out of the rolling mill assembly, the chain type transfer assembly is arranged at one side of the transfer vehicle far away from the rolling mill assembly, and the chain type transfer assembly is in butt joint with the roll changing vehicle and can drive the roll system together to move in or out of a target workshop. The roll changing device does not need to manually enter a rolling mill to manually separate a roll system and transfer accompanying roll systems to provide matched operation, improves the safety of roll changing, has continuous and efficient automatic transfer function, and greatly improves the roll changing efficiency; the roll changing device is simpler in structure, and the weight of each component part is relatively smaller than that of the traditional roll changing device, so that the weight of the device and the running cost are reduced.

Description

Roll changing device and steel rolling production line

Technical Field

The utility model relates to the technical field of steel rolling production, in particular to a roll changing device and a steel rolling production line.

Background

The section steel is a bar-shaped steel with a certain section shape and size, and is widely applied to the fields of construction, automobiles and the like due to excellent mechanical properties and service properties.

For enterprises, how to improve the quality of steel products and reduce the production efficiency and the production cost at the same time has become a focus of attention of each steel manufacturer. In the steel rolling production process, rough rolling is used as an initial process, and the roller system is extremely easy to wear or damage, so that the roller changing time of rough rolling directly influences the efficiency and the productivity of the section steel production line.

When the existing roll system is replaced, the existing roll system is usually detached from the rolling mill manually, and is matched and carried through a specially-made roll replacing frame, a crown block, a train head and other devices, so that the defects of high operation intensity, long time consumption, high danger and the like exist, the roll replacing efficiency is seriously affected, the equipment weight of the whole roll replacing device is extremely large, and the running cost is high.

Therefore, the utility model provides a roll changing device and a steel rolling production line, which can effectively improve roll changing efficiency and reduce equipment weight and running cost compared with conventional roll changing equipment.

Disclosure of Invention

The utility model aims to provide a roll changing device and a steel rolling production line, which are used for improving roll changing efficiency and reducing equipment weight and running cost.

The utility model adopts the following technical scheme:

a roll changing apparatus mounted to one side of a rolling mill assembly, comprising:

the roll changing vehicle is movably arranged in the rolling mill assembly, and a roll system is arranged on the roll changing vehicle;

the transfer trolley is arranged on the outer side of the rolling mill assembly, is in butt joint with the roll changing trolley and can drive the transfer trolley to move in or out of the rolling mill assembly together with the roll system;

the chain type transfer assembly is arranged on one side, far away from the rolling mill assembly, of the transfer trolley, is in butt joint with the roll changing trolley and can drive the roll changing trolley to move in or out of a target workshop together with the roll system.

In some embodiments, the upper end surface of the roll changing truck is provided with a mounting surface, and a plurality of mounting holes are formed in the mounting surface;

the roller system is arranged on the mounting surface, and the roller system is detachably connected with the roller changing vehicle through bolts arranged in the mounting holes.

In some embodiments, the middle portion of the roll changer is recessed downward to form a relief groove.

In some embodiments, a plurality of pin holes are formed in the bottom of the roll changing vehicle, and the pin holes are distributed at intervals along the moving direction of the roll changing vehicle;

the middle rotating vehicle is internally provided with a lifting pin which can be matched with any pin hole.

In some embodiments, a first drive is provided at the bottom of the transfer car, which is coupled to the transfer car and is operable to reciprocate horizontally between the rolling mill assembly and the chain transfer assembly.

In some embodiments, guide plates are respectively arranged on two sides of the moving direction of the transfer car;

a first track is arranged on the inner side of the guide plate, and a roller of the transfer car is in rolling connection with the first track;

the upper part of the guide plate is provided with a second track, and the idler wheels of the roll changing vehicle are in rolling connection with the second track.

In some embodiments, the roll changing truck is provided with a hook head;

the chain type transfer assembly comprises a hook vehicle, wherein a turning hook is arranged on the hook vehicle and is matched with the hook head in a clamping manner.

In some embodiments, the chain transfer assembly further comprises a chain unit comprising:

the bracket is arranged on the upper surface of the bracket,

the driving chain wheel and the driven chain wheel are respectively arranged at two ends of the bracket in the length direction;

the transmission chain is arranged on the driving chain wheel and the driven chain wheel, and the hook vehicle is fixedly arranged on the transmission chain;

and the second drive is in transmission connection with the driving chain wheel so as to drive the transmission chain to drive the hook car to horizontally reciprocate between the target workshop and the intermediate car.

In some embodiments, a third track is arranged on each side of the conveying direction of the transmission chain;

and the idler wheels of the roller changing vehicle are in rolling connection with the third track.

In some embodiments, the roll change apparatus operates at a speed of 0.1m/s to 0.15m/s.

A steel rolling production line employing the roll changing device of any one of the above.

Compared with the prior art, the utility model has the beneficial effects that at least:

1. the automatic roll changing device does not need to manually enter a manual roll separating system of the rolling mill and transfer the accompanying roll system to provide matched operation, improves the safety of roll changing, has continuous and efficient automatic transfer function, and greatly improves roll changing efficiency.

2. The roll changing device is simpler in structure, and the weight of each component part is relatively smaller than that of the traditional roll changing device, so that the weight of the device and the running cost are reduced.

3. The positions among the components of the roll changing device are compact, and the long-stroke roll changing requirement can be met.

Drawings

Fig. 1 is a front view of a roll changing device according to an embodiment of the present utility model.

Fig. 2 is a top view of a roll changing device according to an embodiment of the utility model.

Fig. 3 is a schematic structural view of a roll changing truck according to an embodiment of the present utility model.

Fig. 4 is a schematic structural view of a transfer car according to an embodiment of the present utility model.

FIG. 5 is a schematic view of a chain transfer assembly according to an embodiment of the present utility model.

FIG. 6 is a schematic view of a chain transfer assembly according to another embodiment of the present utility model.

In the figure: 1. a rolling mill assembly; 2. a roll changing vehicle; 21. a mounting surface; 22. a mounting hole; 23. an avoidance groove; 24. a pin hole; 25. a hook head; 3. a transfer vehicle; 31. a lifting pin; 32. a first drive; 4. a chain transfer assembly; 41. hooking; 411. turning over a hook; 42. a chain unit; 421. a bracket; 422. a drive sprocket; 423. a driven sprocket; 424. a drive chain; 425. a second drive; 5. a roller system; 6. a guide plate; 7. a first track; 8. a second track; 9. and a third track.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a repetitive description thereof will be omitted.

The words expressing the positions and directions described in the present utility model are described by taking the drawings as an example, but can be changed according to the needs, and all the changes are included in the protection scope of the present utility model.

Referring to fig. 1 to 6, the present utility model provides a roll changing apparatus installed at one side of a rolling mill assembly 1, the roll changing apparatus including a roll changing carriage 2, a transfer carriage 3, and a chain transfer assembly 4.

The rolling mill assembly 1 is used for rolling section steel and may comprise a mill stand and a roll train 5 above the mill stand, where the roll train 5 is in a non-connected state with the mill stand.

Referring to fig. 1 to 3, a roll changing carriage 2 is movably arranged in the rolling mill assembly 1, in particular between the rolling mill stand and the roll train 5, and four rollers are mounted on both sides of the roll changing carriage 2 so that the roll changing carriage 2 can be moved over the rolling mill stand.

The roll system 5 is arranged on the roll changing carriage 2, and the roll system 5 and the roll changing carriage 2 are fixedly connected into a whole, and the roll changing carriage 2 is used for supporting the roll system 5 and bearing rolling pressure instead of a rolling stand. Referring to fig. 2, in some embodiments, the upper end surface of the roll changing truck 2 is provided with a mounting surface 21, the mounting surface 21 is matched with the bottom surface of the roll system 5 to place the roll system 5 on the mounting surface 21, and connection is realized by means of self gravity of the roll system 5. Or, the installation surface 21 is provided with a plurality of installation holes 22, and the roller system 5 and the roll changing truck 2 are connected through bolts or positioning columns installed in the installation holes 22. The method ensures the firmness and stability of the installation of the roller system 5, and facilitates the later disassembly, assembly and replacement of the roller system 5.

On the basis, the middle part of the roll changing truck 2 can be further recessed downwards, or the two ends of the roll changing truck 2 are raised upwards to form the avoiding groove 23 on the roll changing truck 2, so that interference with the roll changing truck 2 during running of the roll system 5 is prevented, and meanwhile, the installation difficulty and the positioning accuracy of the roll system 5 can be reduced to a certain extent.

Referring to fig. 1 and 4, the transfer carriage 3 is disposed at the outer side of the rolling mill assembly 1, specifically between the rolling mill assembly 1 and the chain transfer assembly 4, and the transfer carriage 3 is similar to the roll changing carriage 2, and four rollers are mounted at both sides thereof, thereby realizing a moving function.

The transfer car 3 interfaces with the roll change car 2 and can drive its associated roll train 5 into and out of the mill assembly 1. Referring to fig. 3, in some embodiments, a lifting pin 31 is disposed in the middle turning cart 3, and the lifting pin 31 may be a straight lifting structure or a lever lifting structure, etc., and is controlled hydraulically or electrically or pneumatically to realize a lifting function with a certain height. Correspondingly, the bottom of the roll changing truck 2 is provided with a plurality of pin holes 24, and the pin holes 24 are distributed at intervals along the moving direction of the roll changing truck 2, so that the pin holes 24 are ensured to correspond to and match with the lifting pins 31. During butt joint, the transfer car 3 moves in place, the lifting pin 31 is lifted into the pin hole 24, so that the butt joint of the transfer car 3 and the roll changing car 2 can be realized, and the roll changing car 2 and the roll system 5 can be driven to move in or out of the rolling mill assembly 1 together by controlling the moving direction and the travel of the transfer car 3.

Conventional motor driving is not suitable in consideration of the weight of the roller system 5 and the volume of the transfer car 3. The utility model is therefore provided with a first drive 32 at the bottom of the transfer car 3, the first drive 32 preferably being a hydraulic cylinder, one end of which is connected to the transfer car 3 and the other end of which is connected to the rolling mill assembly 1 via a seat cushion (see fig. 4). The hydraulic cylinder is small in size and convenient to control, can realize low-speed large-tonnage movement, is very suitable for driving the transfer car 3, and can meet the requirement of horizontal reciprocating movement of the transfer car 3 between the rolling mill assembly 1 and the chain type transfer assembly 4. In addition, the inertia generated by the transfer car 3 at the moment of starting or pausing can be absorbed by the hydraulic cylinder through overload protection (the hydraulic system connected with the hydraulic cylinder is provided with a self-balancing function and is not shown), or the seat cushion connected with the hydraulic cylinder is a cushion pad, and certain inertia can be absorbed as well, so that the stability and reliability of transfer of the transfer car 3 are ensured.

Referring to fig. 1, 5 and 6, the chain transfer assembly 4 is arranged on one side of the transfer car 3 far away from the rolling mill assembly 1, and is used for realizing long-distance butt joint and conveying functions and meeting the requirement of ultra-long-stroke roll replacement of the rolling mill.

The chain transfer assembly 4 interfaces the roll carriage 2 and drives its associated roll train 5 into and out of the mill assembly 1. Referring to fig. 5 and 6, in some embodiments, the chain transfer assembly 4 includes a trolley 41, wherein the trolley 41 is provided with a flip hook 411, specifically rotatably mounted near the hook head 25. The turning hook 411 may be turned automatically (e.g. by a rotary driver or a pull rod, not shown), or turned passively along the guiding surface of the hook 25 after contacting the hook 25, and the hook 41 and the roll changing truck 2 may be engaged by the turning hook 411 and the hook 25.

To achieve the long-distance conveying function, the chain transfer module 4 further includes a chain unit 42, wherein the chain unit 42 is composed of a bracket 421, a driving sprocket 422, a driven sprocket 423, a driving chain 424, and a second drive 425. The driving sprocket 422 and the driven sprocket 423 are respectively arranged at two ends of the support 421 in the length direction, the transmission chain 424 is arranged on the driving sprocket 422 and the driven sprocket 423, and the second drive 425 is in transmission connection with the driving sprocket 422, so that the driving sprocket 422 is driven to rotate, and the transmission chain 424 is driven to run. The trolley 41 is mounted on the conveying surface of the transmission chain 424 through a connecting piece (such as a fixing pin), so that the trolley 41 is connected to horizontally reciprocate between the target workshop and the transfer trolley 3.

To ensure proper operation of the chain unit 42, the second drive 425 needs to have enough torque, where the second drive 425 includes a motor, a reduction gearbox, and a transmission shaft, where the motor drives the transmission shaft through the reduction gearbox, and the transmission shaft is connected to the driving sprocket 422 to drive the rotation of the driving sprocket.

Compared with the existing roll changing equipment, the roll changing device mainly comprises a roll changing vehicle 2, a transfer vehicle 3 and a chain type conveying assembly 4, the positions of the components are compact, and the long-stroke roll changing requirement can be met. The structure is simplified, the weight of each component part is relatively smaller, if the conventional train head and other equipment are adopted in the same roll changing stroke (15 m stroke), the weight of the roll changing device is about 50 tons, the weight of the roll changing device is reduced by about 25 tons, the weight can be reduced by nearly half, and the corresponding running cost is also reduced. In addition, in this roll changing device, roller system 5 is adorned in roll changing truck 2 and the split type design of rolling mill frame, need not the manual separation roller system 5 of manual entering rolling mill, accompany the roller system 5 to transport and provide supporting operation, has improved the security of roll changing, through transfer truck 3, chain transfer subassembly 4 butt joint cooperation, can realize continuous and efficient automatic transfer function, has improved roll changing efficiency by a wide margin.

Referring to fig. 2 and 4, in a preferred embodiment, guide plates 6 are respectively disposed at two sides of the moving direction of the intermediate transfer cart 3, and the guide plates 6 can guide the movement of the intermediate transfer cart 3, so as to ensure the accuracy of the traveling route and avoid affecting the butt joint with the roll changing cart 2 or the hooking cart 41.

In addition, the inboard of baffle 6 is provided with first track 7, and the gyro wheel and the first track 7 roll connection of transfer car 3 to further improve the accuracy that transfer car 3 marked.

A second track 8 is arranged above the guide plate 6, and the roller of the roller changing vehicle 2 is in rolling connection with the second track 8. On the one hand, the design can accurately guide the roll changing truck 2, on the other hand, most of the weight of the roll changing truck 2 and the roll system 5 is directly transferred to the second track 8, and the transfer truck 3 only plays roles of traction and direction regulation, so that the roll changing truck cannot be damaged by excessive load, and the service life of the roll changing device is prolonged.

As shown in fig. 2 and 6, the third rail 9 is provided on each side of the conveying direction of the drive chain 424, and the rollers of the roll changing carriage 2 are connected in rolling contact with the third rail 9. The functions of the second rail 8 are similar, and the third rail 9 plays a role in supporting the roll changing vehicle 2 and the roll system 5 while guiding the roll changing vehicle 2, so that the damage of the transmission chain 424 is avoided and the service life of the roll changing device is prevented.

In a specific embodiment, the running speed of the roll changing device is 0.1 m/s-0.15 m/s, the stable running of the roll changing device can be ensured in the speed range, and the safety and stability of the transferring process are improved. Illustratively, the roll changing device operates at a speed of 0.13m/s, at which the roll changing device operates smoothly and with a high efficiency.

The utility model also provides a roll changing method, which comprises the steps S1-S8.

S1, suspending the operation of a rolling mill assembly 1, and controlling a transfer car 3 to be in butt joint with a roll changing car 2;

s2, dragging the roll changing vehicle 2 to walk by adopting the transfer vehicle 3, so that the roller system 5 is moved out from the rolling mill assembly 1 to a transfer position;

s3, controlling the transfer vehicle 3 to be separated from the roll changing vehicle 2, and simultaneously controlling the chain type transfer assembly 4 to reach a transfer position and to be in butt joint with the roll changing vehicle 2;

s4, dragging the roll changing vehicle 2 to walk by adopting the chain type transfer assembly 4 so that the roll changing vehicle and the roll system 5 are moved into a target workshop;

s5, hanging away an old roller system 5 on the roller changing vehicle 2 by using a crown block in a target workshop, and loading the old roller system 5 into a new roller system 5;

s6, dragging the roll changing truck 2 to a transfer position from a target workshop by adopting a chain type conveying assembly 4;

s7, controlling the chain type transfer assembly 4 to be separated from the roll changing vehicle 2, and simultaneously controlling the transfer vehicle 3 to reach a transfer position and to be in butt joint with the roll changing vehicle 2;

s8, dragging the roll changing truck 2 to walk by adopting the transfer truck 3, enabling the roll system 5 to move into the rolling mill assembly 1, and controlling the transfer truck 3 to be separated from the roll changing truck 2.

The utility model also provides a steel rolling production line, which adopts any roll changing device, can effectively improve roll changing efficiency and operation safety, and reduces roll changing operation cost.

While embodiments of the present utility model have been shown and described, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that changes, modifications, substitutions and alterations may be made therein by those of ordinary skill in the art without departing from the spirit and scope of the utility model, all such changes being within the scope of the appended claims.

Claims (11)

1. A roll changing device installed at one side of a rolling mill assembly (1), characterized by comprising:

the roll changing vehicle (2), the roll changing vehicle (2) is movably arranged in the rolling mill assembly (1), and a roll system (5) is arranged on the roll changing vehicle (2);

the transfer trolley (3), the transfer trolley (3) is arranged at the outer side of the rolling mill assembly (1), the transfer trolley (3) is in butt joint with the roll changing trolley (2) and can drive the transfer trolley to move in or out of the rolling mill assembly (1) together with the roll system (5);

the chain type transfer assembly (4), chain type transfer assembly (4) set up transfer car (3) keep away from one side of rolling mill subassembly (1), chain type transfer assembly (4) butt joint roll changing car (2) to can drive it together roll system (5) move in or shift out the target workshop jointly.

2. Roll changing device according to claim 1, characterized in that the upper end surface of the roll changing truck (2) is provided with a mounting surface (21), and that the roll system (5) is arranged on the mounting surface (21).

3. Roll changing device according to claim 2, characterized in that the middle part of the roll changing truck (2) is recessed downwards to form a relief groove (23).

4. Roll changing device according to claim 1, characterized in that the bottom of the roll changing truck (2) is provided with a plurality of pin holes (24), the pin holes (24) being distributed at intervals along the moving direction of the roll changing truck (2);

the middle rotating vehicle (3) is internally provided with a lifting pin (31), and the lifting pin (31) can be matched with any pin hole (24).

5. Roll changing device according to claim 1, characterized in that the bottom of the transfer car (3) is provided with a first drive (32), which first drive (32) is connected to the transfer car (3) and can drive it to move back and forth horizontally between the rolling mill assembly (1) and the chain transfer assembly (4).

6. Roll changing device according to claim 5, characterized in that the two sides of the direction of movement of the transfer car (3) are each provided with a guide plate (6);

a first track (7) is arranged on the inner side of the guide plate (6), and the roller of the transfer car (3) is in rolling connection with the first track (7);

a second track (8) is arranged above the guide plate (6), and the roller of the roller changing vehicle (2) is in rolling connection with the second track (8).

7. Roll changing device according to claim 1, characterized in that the roll changing truck (2) is provided with a hook (25);

the chain type conveying assembly (4) comprises a hook vehicle (41), a turning hook (411) is arranged on the hook vehicle (41), and the turning hook (411) is in clamping fit with the hook head (25).

8. Roll changing device according to claim 7, characterized in that the chain transfer assembly (4) further comprises a chain unit (42), the chain unit (42) comprising:

a bracket (421),

the driving chain wheel (422) and the driven chain wheel (423), wherein the driving chain wheel (422) and the driven chain wheel (423) are respectively arranged at two ends of the bracket (421) in the length direction;

the transmission chain (424), the said transmission chain (424) is set up on said driving sprocket (422) and said driven sprocket (423), the said hook car (41) is fixed to set up on the said transmission chain (424);

and the second drive (425) is in transmission connection with the driving chain wheel (422) so as to drive the transmission chain (424) to drive the trolley (41) to horizontally reciprocate between the target workshop and the intermediate trolley (3).

9. Roll changing device according to claim 8, characterized in that the transmission chain (424) is provided with a third track (9) on each side in the conveying direction;

the roller of the roller changing vehicle (2) is in rolling connection with the third rail (9).

10. Roll changing device according to claim 1, characterized in that the running speed of the roll changing device is 0.1 m/s-0.15 m/s.

11. A steel rolling line, characterized in that a roll changing device according to any one of claims 1-10 is used.