CN105107847A - Vertical rolling mill adopting upper transmission mode - Google Patents

Abstract

The invention relates to a vertical roller mill with upper transmission, which includes a main transmission device, a frame assembly, a side pressure and balance device, a roll system device and a frame roll, and two main motors in the main transmission device are respectively arranged on the transmission device Both sides of the support are connected to the reducer through a drum-shaped gear coupling, and the reducer is connected to two rolls through a cross-shaft universal joint; the rolls are equipped with roll bearing housings, and the upper part of the upper roll bearing housing is equipped with rollers, and the outside of the rollers is equipped with The scraper and the roll bearing seat on the same side of the roller are equipped with convex blocks; the two sides of the roll are respectively equipped with side pressure and balancing devices. In the present invention, the main motor is placed on both sides of the transmission device bracket to reduce the impact of elastic deformation on the roll caused by the weight of the upper part of the frame archway; a scraper is added at the roller of the roll bearing seat, which can replace the conventional water sweeping device; Blocks are set on the seat to prevent slipping accidents; the overall structure is compact, easy to adjust, the product has high precision and strong safety.

Description

A type of vertical roller mill with upper transmission

technical field

The invention relates to the technical field of steel rolling, in particular to an upper-drive vertical roller mill.

Background technique

At present, there are mainly two transmission forms of vertical roller mills, namely horizontal transmission form and upper transmission form. Because the working environment of the upper transmission form is good, the influence of water and iron scale is eliminated, the fault frequency is greatly reduced, and it also brings great convenience to maintenance, so most vertical roller mills adopt the upper transmission form. However, most of the main motors of the commonly used upper-drive vertical roller mills are located above the reducer, which causes excessive force on the stand and affects the rolling quality to a certain extent. In addition, the sliding of the roll bearing housing in the frame requires a water sweeping device to remove the oxide scale on the slideway, which not only increases the equipment investment, but also is not conducive to the saving of water resources. The roll chock is suspended on the machine frame through the rollers. Once the rollers are damaged, it will cause the accident that the whole roll system device will slide down.

Contents of the invention

The invention provides a vertical roller rolling mill with an upper transmission form. The frame archway adopts an assembled connection structure, and the main motor is placed on both sides of the transmission device bracket to reduce the influence of the elastic deformation caused by the upper weight of the frame archway on the roll; Adding a scraper to the roller can replace the conventional water sweeping device, reducing equipment investment and avoiding water consumption; in addition, a stopper is set on the roll bearing seat to prevent slipping accidents; the overall structure is compact, easy to adjust, and the product accuracy High, strong security.

In order to achieve the above object, the present invention adopts the following technical solutions to realize:

A vertical roller mill in the form of an upper transmission, comprising a main transmission device, a frame assembly, a side pressure and balancing device, a roll system device and a frame roll, wherein a transmission bracket and a vertical roll frame are set in the frame assembly, The roller frame and the transmission bracket are detachably connected, and together form the frame archway; the transmission bracket is composed of the bottom horizontal support, the two side enclosure frames and the top support; the two main motors in the main transmission They are respectively arranged on the horizontal support and located in the enclosure frame structure on both sides, and their extension shafts are respectively connected to the input shaft of the reducer through the drum-shaped gear coupling; the two reducers are respectively placed on the top support On the pedestal, the output shaft of the reducer is connected to the two rolls through the cross-shaft universal joint shaft; the upper and lower ends of the rolls are respectively equipped with roll chocks, and the upper part of the upper roll chock is equipped with rollers, which can be moved along the vertical roll frame. The upper slideway slides, and the roll is suspended in the window of the frame; there is a scraper on the outer side of the roller, and a convex block is set on the roll bearing seat on the same side of the roller; side pressure and balance devices are installed on both sides of the roll, and the roll bearing seat Under the drag of the side pressure and balancing device, it moves horizontally in the vertical roll frame, and the contacting roll bearing housing and the surface of the vertical roll frame are respectively provided with wear-resistant slide plates; rack roll.

The main motor is a vertical AC variable frequency motor, the reducer is a two-stage cylindrical gear reducer, and a photoelectric encoder is installed at the end of the high-speed shaft of the reducer to control the speed synchronization of the two main motors.

The side pressure device in the side pressure and balance device has the functions of AWC automatic width control and SSC short stroke control, and each AWC hydraulic cylinder tail is equipped with a displacement sensor to control the opening of the roll; the head of the side pressure cylinder is connected with the roll A pressure gauge is installed in the side pressure box between the bearing housings to detect the rolling force of the vertical roll; the AWC cylinder and the hydraulic balance cylinder are installed in the bore of the frame, and can be pulled out as a whole for replacement.

Compared with prior art, the beneficial effect of the present invention is:

The frame archway adopts an assembled connection structure, and the main motor is placed on both sides of the transmission bracket to reduce the impact of elastic deformation on the roll caused by the weight of the upper part of the frame archway; a scraper is added at the roller of the roll bearing seat to replace the conventional water sweeping device , reducing equipment investment and avoiding water consumption; in addition, a stopper is set on the roll bearing seat to prevent slipping accidents; the overall structure is compact, easy to adjust, high product precision, and strong safety.

Description of drawings

Fig. 1 is a schematic diagram of the external structure of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the main components of the present invention.

Fig. 3 is a structural schematic diagram of the roll and the roll chock of the present invention.

In the figure: 1. Main motor 2. Drum gear coupling 3. Reducer 4. Cross shaft universal joint shaft 5. Vertical roller frame 6. Transmission device bracket 7. Side pressure and balance device 8. Roller roller System device 9. Rack roller 10. Roller 11. Roller bearing seat 12. Wear-resistant slide plate 13. Roller 14. Scraper 15. Block

Detailed ways

The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

See Fig. 1-Fig. 2, it is the structure schematic diagram of the present invention, a kind of vertical roller mill of upper transmission form of the present invention, comprises main transmission device, frame assembly, side pressure and balance device, roll system device and frame roll, so The transmission device support 6 and the vertical roller frame 5 are established in the frame assembly, and the vertical roller frame 5 and the transmission device support 6 are detachably connected to form a frame archway together; wherein the transmission device support 6 is composed of a bottom horizontal support, It is composed of enclosure frame on both sides and top support; the two main motors 1 in the main transmission device are respectively arranged on the horizontal support, and are located in the enclosure frame structure on both sides, and their protruding shafts pass through the drum respectively. The gear coupling 2 is connected to the input shaft of the reducer 3; the two reducers 3 are separately placed on the top support, and the output shafts of the reducer 3 are respectively connected to the two rolls 10 through the cross-shaft universal joint shaft 4 The upper and lower ends of the roll 10 are respectively provided with a roll chock 11, wherein the top of the upper roll chock is provided with a roller 13, which can slide along the slideway on the vertical roll frame 5, and the roll 10 is suspended in the frame window; Scraper 14 is arranged on the outer side of 13, and roll chock 11 on the same side as roller 13 is provided with protruding stopper 15; Moving horizontally in the vertical roll frame 5, the contacting roll bearing housing 11 and the surface of the vertical roll frame 5 are respectively provided with wear-resistant slide plates 12;

The main motor 1 is a vertical AC variable frequency motor, the reducer 3 is a two-stage cylindrical gear reducer, and a photoelectric encoder is installed at the end of the high-speed shaft of the reducer 3 to control the speed synchronization of the two main motors 1.

The side pressure device in the side pressure and balance device 7 has the functions of AWC automatic width control and SSC short stroke control, and each AWC hydraulic cylinder tail is equipped with a displacement sensor for controlling the opening degree of the roll 10; the head of the side pressure cylinder A pressure gauge is installed in the side pressure box between the roll chock 11 to detect the rolling force of the vertical roll; the AWC cylinder and the hydraulic balance cylinder are installed in the bore of the vertical roll frame 5 and can be pulled out as a whole for replacement.

The vertical rolling mill in the form of upper transmission of the present invention is mainly used for rolling in the width direction of the steel plate, and it is combined with a horizontal rolling mill to form a universal rolling mill for cross-row rolling to provide intermediate slabs for subsequent rolling mills. The main drive of the vertical roller mill adopts the form of motor upper transmission, and two vertical AC frequency conversion motors drive the rolls through two-stage cylindrical gear reducers for rolling. The main motor 1 is arranged on both sides of the transmission bracket 6 respectively, and the electrical synchronization is realized through a photoelectric encoder. The side pressure device adopts AWC long-stroke hydraulic cylinder to press down the structure.

The transmission bracket 6 is a welded structure, and the vertical roller frame 5 is a steel casting.

When the roll 10 is replaced, the roll 10 is moved to the vertical line of the cross shaft universal joint shaft 4 through the balance cylinder, and the cross shaft type universal joint shaft 4 is lifted by the shaft lifting hydraulic cylinder so that it is compatible with the roll 10 and the side pressure and The balance device 7 is disengaged, and then the roll 10 is moved to the rolling center line, and the roll 10 and the bearing box are hoisted out together with a special spreader. The limit position and the accurate parking position of the cross-shaft universal joint shaft 4 are controlled by the proximity switch for lifting and falling.

The balance device is driven by the balance cylinder to drive the balance bracket to pull the roll bearing, which is used to eliminate the horizontal gap between the roll bearing and the parts of the side pressure device. During work, the device is in a balanced follow-up state. When changing rolls, the balance hydraulic cylinder Work in reverse, push the roller bearing and side pressure device to separate to the roller changing position through the balance bracket. A displacement sensor is installed at the end of the balance cylinder to control the position of the roll 10 when the roll is changed.

The vertical roller mill in the form of upper transmission of the present invention adopts an overall optimized design, and compared with the ordinary vertical roller mill with upper transmission, it solves the problems of heavy equipment, low product precision and high energy consumption. In addition, a series of optimizations have been carried out on the structure of the roll chock 11, such as canceling the water sweeping device and adding a scraper 14 to prevent the influence of the oxide scale on the sliding of the roll chock 11 in the vertical roll frame 5, and reduce the water consumption. In addition, a block 15 is provided on the roll chock 11 to prevent the roll chock 11 from slipping due to damage to the roller 13 from happening.

Claims (3)

1. a upper driving form vertical miller, comprise main drive, rack, side pressure and bascule, roller system device and breast roll, it is characterized in that, transmission device support and standing roller frame is established in described rack, standing roller frame is removably connected with transmission device support, and jointly forms framework memorial archway; Wherein transmission device support goes along with sb. to guard him formula framework by bottom level bearing, both sides and top support forms; 2 mair motor in main drive are separately positioned on horizontal seat, and are positioned at both sides and go along with sb. to guard him formula frame structure, and its projecting shaft is upwards connected with the power shaft of reductor respectively by crown gear coupling; 2 reductors are placed in top support respectively, and the output shaft of reductor is connected with 2 rolls respectively by crossheading type universal coupling; Roll upper/lower terminal establishes roll chock respectively, and wherein roller is established on topping roll bearing block top, can slide, and make roll be suspended in framework window along the slideway on standing roller frame; Establish scraper plate outside roller, the roll chock of roller homonymy establishes the block of evagination; Roll both sides establish side pressure and bascule respectively, and roll chock moves horizontally under the dragging of side pressure and bascule in standing roller frame, and wear-resistant slide plate is established respectively in the roll chock contacted and standing roller frame surface; Breast roll is established respectively in the rolled piece entrance and exit side of framework memorial archway.

2. a kind of upper driving form vertical miller according to claim 1, it is characterized in that, described mair motor is vertical AC variable-frequency motor, and reductor is two-stage cylindrical gear reducer, and reductor high speed shaft end is equipped with photoelectric encoder for controlling 2 mair motor speed sync.

3. a kind of upper driving form vertical miller according to claim 1, it is characterized in that, side-pressing device in described side pressure and bascule possesses AWC automatic width control and SSC short stroke control function, and each AWC hydraulic cylinder afterbody is all equipped with displacement transducer for controlling the opening degree of roll; Measuring cell is housed for detecting edge rolling power in the side pressure case between side pressure cylinder head and roll chock; AWC cylinder and hydro-cushion cylinder are contained in frame bore hole, overallly can extract out and change.