CN215844879U

CN215844879U - 2+8 roller combined type thick plate blank large-reduction casting and rolling machine roller system height adjusting device

Info

Publication number: CN215844879U
Application number: CN202121704910.XU
Authority: CN
Inventors: 周治宇; 张富华; 张乐峰; 许鑫
Original assignee: Beijing Shougang International Engineering Technology Co Ltd
Current assignee: Beijing Shougang International Engineering Technology Co Ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-02-18
Anticipated expiration: 2031-07-26

Abstract

The utility model discloses a 2+8 roller combined type high-reduction casting and rolling mill roller system height adjusting device for a thick plate blank, which comprises a base, a rotary power element, a supporting seat, a ball screw pair and at least 2 wedge components, wherein the rotary power element, the supporting seat, the ball screw pair and the at least 2 wedge components are arranged on the base; the ball screw of ball screw pair runs through and installs in the bearing, and include levogyration screw thread section and dextrorotation screw thread section, all set up 1 at least ball nut on levogyration screw thread section and the dextrorotation screw thread section, the slide wedge subassembly is no less than to ball nut, each slide wedge subassembly is installed on the screw through ball nut respectively, and the slide wedge subassembly incline direction of levogyration screw thread section and dextrorotation screw thread section is opposite, each slide wedge subassembly all includes slide wedge slider and lower slide wedge slider, it has the inclined plane of mutual contact and coincide with lower slide wedge slider to go up slide wedge slider, lower slide wedge slider is connected with the ball nut that corresponds, be provided with on the base with last slide wedge slider sliding connection's guider, the device has realized the stepless adjustment of roll face height through the vice drive of ball screw.

Description

2+8 roller combined type thick plate blank large-reduction casting and rolling machine roller system height adjusting device

Technical Field

The utility model relates to the technical field of slab continuous casting production, in particular to a 2+8 roller combined type high-reduction casting and rolling machine roller system height adjusting device for a thick slab.

Background

The 2+8 roller combined type thick plate blank high-reduction casting and rolling machine is applied to the field of metallurgical continuous casting, is used for solving the defects of internal looseness and shrinkage cavity of a thick plate blank product and improving the density of a casting blank product, and compared with a common roughing mill roller, the high-reduction casting and rolling machine roller has longer contact time with a plate blank, higher contact temperature and very bad working condition. The large-reduction roller needs to be replaced irregularly according to the working condition and sent into a grinding roller for grinding, so that the surface smoothness of the roller is ensured. The roll diameter of the large-reduction roll can be changed by the working abrasion of the large-reduction roll and the roll changing and grinding, and in order to ensure the product quality, the height of the surface of the large-reduction roll needs to be always positioned at the elevation of a continuous casting process surface, so that a roll surface height adjusting device needs to be placed below a large-reduction roll system to compensate errors caused by the change of the diameter of the large-reduction roll.

The roller surface height adjusting device is positioned under a bearing seat of a large-reduction roller of a casting and rolling machine and is exposed to extremely severe working environments such as high-temperature radiation, large cooling water dripping, scale peeling on the surface of a plate blank and the like for a long time.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a 2+8 roller combined type high-reduction casting and rolling machine roller system height adjusting device for a thick plate blank, which realizes the stepless adjustment of the height of a large-reduction roller surface of a casting and rolling machine and meets the requirement of bearing capacity.

The technical scheme adopted for realizing the purpose of the utility model is that the roller system height adjusting device of the 2+8 roller combined type thick plate blank casting and rolling machine under high pressure comprises a base, at least 2 wedge assemblies, a supporting seat, a rotating power element and a ball screw pair driven by the rotating power element, wherein the wedge assemblies, the supporting seat, the rotating power element and the ball screw pair are all arranged on the base; the lead screw of the ball screw pair is arranged in the supporting seat in a penetrating way, the lead screw comprises a left-handed thread section and a right-handed thread section, at least 1 ball nut is arranged on the left-handed thread section and the right-handed thread section, the number of the ball nuts is not less than that of the wedge components, each wedge component is arranged on the ball screw pair through the ball nut, the inclination directions of the wedge components positioned on the left-handed thread section and the wedge components positioned on the right-handed thread section are opposite, each wedge component comprises an upper wedge slide block and a lower wedge slide block, the upper wedge slide block and the lower wedge slide block are provided with inclined planes which are mutually contacted and matched, the lower wedge slide block is fixedly connected with the corresponding ball nut, a guide device is arranged on the base, and the guide device is arranged along the lifting direction of the upper wedge slide block, and the guide device is connected with the upper wedge slide block in a sliding manner.

Furthermore, the supporting seat comprises a middle bearing seat and an end bearing seat, the screw rod further comprises a polished rod section arranged between the left-handed thread section and the right-handed thread section, the polished rod section is arranged in the middle bearing seat in a penetrating mode, one end of the screw rod is arranged in the end bearing seat, and the other end of the screw rod is connected with the rotating power element.

Furthermore, a through hole is formed in the lower wedge sliding block, the lower wedge sliding block is sleeved on the lead screw through the through hole, and an assembling groove used for being sleeved with the ball nut is formed in the through hole.

Furthermore, a bearing block used for being in contact with the roller system is arranged on the upper inclined wedge sliding block.

Further, the slide wedge assembly further comprises a slide plate, and the slide plate is arranged between the inclined surface of the upper slide wedge sliding block and the inclined surface of the lower slide wedge sliding block.

Further, along the inclined plane direction of slide wedge subassembly, the length of slide is less than go up the length of slide wedge slider, each slide wedge subassembly all still includes first scrape plate group and second scrape plate group, first scrape plate group sets up go up the bottom of slide wedge slider, and with lower slide wedge slider contact, second scrape plate group sets up the bottom of lower slide wedge slider, and with the base contact.

Furthermore, the 2+8 roller combined type thick plate blank high-reduction casting and rolling mill roller system height adjusting device further comprises a protection assembly, the protection assembly is detachably connected with the base, the protection assembly and the base are encircled to form a closed installation cavity, the wedge assembly, the supporting seat, the rotating power element and the ball screw assembly are all arranged in the installation cavity, and a through hole for enabling the upper wedge sliding block to move up and down is formed in the protection assembly.

Further, a sealing element used for sealing a gap between the base and the protection component is arranged on the base.

Furthermore, the base and/or the lead screw are/is provided with more than 2 limiting parts, and the limiting parts are located at the movement limit positions of the wedge component.

Further, the 2+8 roller combined type thick slab high-reduction casting and rolling machine roller system height adjusting device further comprises a control device and a detection device, the control device is electrically connected with the detection device and the rotating power element respectively, and the detection device is used for detecting the movement displacement of the upper wedge slide block and/or the lower wedge slide block.

According to the technical scheme, the height adjusting device for the 2+8 roller combined type thick slab high-reduction casting and rolling machine roller system comprises a base, at least 2 wedge assemblies, a supporting seat, a rotating power element and a ball screw pair driven by the rotating power element, wherein the wedge assemblies, the supporting seat and the ball screw pair are all arranged on the base, and the base is used for installing the whole height adjusting device for the 2+8 roller combined type thick slab high-reduction casting and rolling machine roller system at the lower window position of a rolling mill housing. The lead screw of ball screw pair runs through and installs in the bearing, the lead screw includes levogyration screw thread section and dextrorotation screw thread section, all set up 1 at least ball nut on levogyration screw thread section and the dextrorotation screw thread section, the quantity of ball nut is not less than the quantity of slide wedge subassembly, each slide wedge subassembly is installed on ball screw pair through ball nut respectively, all be provided with a slide wedge subassembly on levogyration screw thread section and the dextrorotation screw thread section promptly, and the slope direction that is located the slide wedge subassembly on the levogyration screw thread section is opposite with the slide wedge subassembly that is located the dextrorotation screw thread section, drive each slide wedge subassembly respectively through the ball nut that sets up on the lead screw, under the drive of rotating power component, the ball nut of both sides moves towards opposite direction, make the slide wedge subassembly at lead screw both ends can synchronous adjustment, convert the rotary motion of lead screw into ball nut's linear motion. Each inclined wedge component comprises an upper inclined wedge sliding block and a lower inclined wedge sliding block, the upper inclined wedge sliding block and the lower inclined wedge sliding block are provided with inclined planes which are mutually contacted and matched, the lower inclined wedge sliding block is fixedly connected with a corresponding ball nut, the upper inclined wedge sliding block is used for being contacted with bearing seats at two ends of a roller system so as to drive the roller system to lift, a guide device is arranged on a base, the guide device is arranged along the lifting direction of the upper inclined wedge sliding block, the guide device is connected with the upper inclined wedge sliding block in a sliding way, the guide device limits the movement of the upper inclined wedge sliding block along the axial direction of a lead screw, so that the upper inclined wedge sliding block can only do lifting movement, and by utilizing the principle of inclined plane reinforcement between the inclined wedge components, the upper inclined wedge sliding block lifts under the guide of the guide device, the whole-course stepless adjustment of the height of the roller surface of the roller system under large press is realized by the drive of a ball screw pair, and simultaneously, under the working state of a 2+8 roller set type slab casting and rolling machine under large press, when the roller system height adjusting device bears 1500 tons of rolling force, the internal axial force is counteracted through the symmetrical arrangement of the wedge components and the self-locking characteristic of the ball screw pair, the service life of a rotating power element is ensured, and the roller surface height of the large-pressure roller system is constant under 1500 tons of rolling force so as to meet the bearing requirement and ensure the product quality.

Compared with the prior art, the 2+8 roller combined type thick plate blank high-reduction casting and rolling machine roller system height adjusting device provided by the utility model has the advantages that the transmission efficiency of the ball screw pair is high, the movement of the wedge components on the left-handed thread section and the right-handed thread section can be completely synchronous, the stepless adjustment of the height of the large-reduction roller surface of the casting and rolling machine is realized, and the roller diameter change of the large-reduction roller caused by the work abrasion is accurately compensated. Meanwhile, the self-locking characteristic of the ball screw pair is utilized, so that the large rolling system keeps the height of the lower roll surface constant under the rolling force of 1500 tons, the bearing capacity requirement is met, and the product quality is ensured.

Drawings

Fig. 1 is a schematic structural diagram of a 2+8 roller combined type thick slab casting and rolling mill roller system height adjusting device under large reduction provided by an embodiment of the utility model;

FIG. 2 is a top view of the 2+8 roller combination type thick slab heavy reduction caster roller train height adjustment apparatus of FIG. 1;

FIG. 3 is a schematic connection diagram of a ball screw pair and a wedge assembly of the 2+8 roller combination type thick plate blank high reduction casting and rolling mill roller system height adjusting device in FIG. 1;

fig. 4 is a schematic structural diagram of a wedge assembly in the height adjusting device of the 2+8 roller combination type thick slab casting and rolling mill roller system under large reduction of fig. 1.

Description of the drawings: 1-base, 11-middle bearing seat, 12-end bearing seat, 13-limiting piece, 14-sealing piece; 2-ball screw pair, 21-left-hand thread section, 22-right-hand thread section, 23-ball nut, 24-polished rod section and 25-positioning section; 3-a wedge component, 31-an upper wedge slide block, 32-a lower wedge slide block, 33-a bearing block, 34-a slide plate, 35-a first scraper group and 36-a second scraper group; 4-a protection component, 41-a rotating power element shield, 42-a main cover plate, 43-a water retaining shield, 44-an encoder shield; 5-rotating the power element; 6-coder.

Detailed Description

In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings by way of specific embodiments.

In order to solve the technical problems that a common adjusting device in the prior art cannot meet special working conditions of a high-reduction casting and rolling machine, and has the defects of crushing and short service life, the utility model provides a 2+8 roller combined type high-reduction casting and rolling machine roller system height adjusting device for a thick plate blank, which can realize the stepless adjustment of the height of a high-reduction roller surface of the casting and rolling machine and meet the requirement of bearing capacity at the same time, and the content of the utility model is described in detail through an embodiment as follows:

the utility model provides a 2+8 combination formula thick slab casting and rolling machine roll system height adjusting device under big pressure, including

base

1, 2 piece at least slide wedge subassemblies 3, the bearing, rotate power component 5 and by the vice 2 of ball screw of rotation power component 5 drive, slide wedge subassembly 3, bearing and ball screw are vice 2 all set up on base 1, base 1 is used for installing whole 2+8 combination formula thick slab casting and rolling machine roll system height adjusting device under big pressure in rolling mill housing's lower window position, do the concrete description to the concrete structure and the installation relation of each subassembly down:

the lead screw of the ball screw pair 2 is arranged in the supporting seat in a penetrating way, the lead screw comprises a left-handed thread section 21 and a right-handed thread section 22, at least 1 ball nut 23 is arranged on the left-handed thread section 21 and the right-handed thread section 22, the number of the ball nuts 23 is not less than that of the wedge components 3, each wedge component 3 is respectively arranged on the ball screw pair 2 through the ball nut 23, namely, at least one wedge component 3 is arranged on each of the left-handed thread section 21 and the right-handed thread section 22, the inclination directions of the wedge components 3 on the left-handed thread section 21 and the wedge components 3 on the right-handed thread section 22 are opposite, each wedge component 3 is respectively driven through the ball nut 23 arranged on the lead screw, the ball nuts 23 on the two sides move towards opposite directions under the driving of the rotating power element 5, so that the wedge components 3 at the two ends of the lead screw can be synchronously adjusted, the rotating motion of the lead screw is converted into the linear motion of the ball nuts 23, meanwhile, under the working state of the 2+8 roller combined type thick plate blank high-reduction casting and rolling machine, namely when the roller system height adjusting device bears 1500 tons of rolling force, the influence of the axial force inside the ball screw pair 2 on the rotating power element 5 is eliminated through the symmetrical arrangement of the wedge components and the self-locking characteristic of the ball screw pair, the service life of the rotating power element 5 is ensured, the roller surface height of the high-reduction roller system is constant under 1500 tons of rolling force, the bearing requirement is met, and the product quality is ensured.

Each wedge component 3 comprises an upper wedge slide block 31 and a lower wedge slide block 32, the upper wedge slide block 31 and the lower wedge slide block 32 are provided with inclined planes which are contacted with each other and are matched with each other, the lower wedge slide block 32 is fixedly connected with the corresponding ball nut 23, the upper wedge slide block 31 is used for being contacted with bearing seats at two ends of a roller system so as to drive the roller system to lift, a guide device is arranged on the base 1 and is arranged along the lifting direction of the upper wedge slide block 31, the guide device is connected with the upper wedge slide block 31 in a sliding manner, the guide device limits the movement of the upper wedge slide block 31 along the axial direction of a lead screw, the lower wedge slide block 32 drives the upper wedge slide block 31 to lift on the guide device, the ball screw pair 2 drives the wedge component 3 to move, and the whole-course stepless adjustment of the height of the roller system under large pressure is realized.

In order to ensure the stability and installation of the screw rod, in this embodiment, the supporting seat includes an intermediate bearing seat 11 and an end bearing seat 12, the screw rod further includes a polished rod section 24 disposed between the left-handed thread section 21 and the right-handed thread section 22, the polished rod section 24 is inserted into the intermediate bearing seat 11, one end of the screw rod is fixedly installed on the end bearing seat 12, and the other end of the screw rod is connected with the rotating power element 5.

In order to ensure the positioning of the screw and reduce the abrasion, in the embodiment, the two ends of the polish rod section 24 are provided with positioning sections 25 with variable diameters, the diameter of each positioning section 25 is smaller than that of the polish rod section 24, and the screw is axially positioned through bearing end covers which are detachably arranged at the two ends of the supporting seat.

The arrangement of the lower inclined wedge sliding block 32 is not particularly limited, as long as the lower inclined wedge sliding block is connected with the ball nut 23 and synchronously moves with the ball nut 23, for example, a placing platform can be arranged on the base 1, and the lower inclined wedge sliding block 32 is placed on the placing platform and connected with the ball nut 23. In order to simplify the installation, in this embodiment, a through hole is formed in the lower wedge slider 32, the lower wedge slider 32 is sleeved on the screw rod through the through hole, an assembly groove for being sleeved with the ball nut 23 is formed in the through hole, the lower wedge slider is connected with the ball nut 23 through a screw, the rotary power element 5 is arranged at the end of the base 1, and the specific number of the assembly groove is determined by the number of the ball nuts 23 and the number of the wedge assemblies 3.

Because the upper end face of the upper wedge sliding block 31 needs to be in contact with the roller system, but the upper wedge sliding block 31 is easy to wear due to the large rolling force of the roller system under large pressure, and in order to improve the strength of the wedge component 3, improve the wear resistance and facilitate maintenance, in the embodiment, the upper wedge sliding block 31 is provided with the bearing block 33 used for being in contact with the roller system, the bearing block 33 can be made of materials with strong wear resistance and high rigidity, and meanwhile, for facilitating replacement, the bearing block 33 is detachably arranged at the top of the upper wedge sliding block 31 through a threaded part.

To reduce wear between upper wedge shoe 31 and lower wedge shoe 32 and extend the useful life, wedge assembly 3 further includes a slide plate 34 in this embodiment, slide plate 34 being disposed between the inclined surface of upper wedge shoe 31 and the inclined surface of lower wedge shoe 32.

Along slide wedge subassembly 3's inclined plane direction, when slide 34's length is greater than slide wedge subassembly's contact inclined plane length, the slide outstanding both ends in the slide wedge subassembly, slide 34 can promote slide wedge subassembly's wear resistance this moment, can play certain effect of striking off surperficial impurity again, but when slide 34's length is less than the length of last slide wedge slider 31, in order to guarantee slide wedge subassembly 3 inside and with base 1, the smooth and easy of relative motion between the lead screw, in this embodiment, each slide wedge subassembly 3 all still includes first scraping plate group 35 and second scraping plate group 36, first scraping plate group 35 sets up the bottom at last slide wedge slider 31, and contact with lower slide wedge slider 32, second scraping plate group 36 sets up the bottom at lower slide wedge slider 32, and contact with base 1, avoid dust or impurity to get into in the fit clearance.

In order to realize the accurate adjustment of the height of the roll surface, the height adjusting device of the 2+8 roller combined type thick plate blank casting and rolling mill roll system under large reduction further comprises a control device and a detection device, wherein the control device is respectively and electrically connected with the detection device and the rotating power element 5, and the detection device is used for detecting the movement displacement of the upper inclined wedge slide block 31 and/or the lower inclined wedge slide block 32. The signal component is not particularly limited in the present invention, and may be a sensor for monitoring the displacement of upper cam slider 31 or a sensor for monitoring the lateral displacement of lower cam slider 32. In the embodiment, the height required to be adjusted can be calculated and obtained after the roll diameter is obtained by the control device, the rotating power element 5 is a hydraulic motor, the signal component is preferably an encoder 6, the displacement of the lower inclined wedge slide block 32 is determined by the encoder 6, and the displacement of the upper inclined wedge slide block 31 is obtained through calculation and conversion in the control device, so that the hydraulic motor is controlled to stop.

The position of the encoder 6 is not limited in the present invention, and the encoder may be disposed on the hydraulic motor, or may be disposed at one end of the screw rod, in this embodiment, the hydraulic motor and the encoder 6 are disposed at two ends of the screw rod, respectively.

The roller surface height adjusting device is positioned under a bearing seat of a large-reduction roller of a casting and rolling machine, is exposed to extremely severe working environments such as high-temperature radiation, a large amount of cooling water dripping, scale peeling on the surface of a plate blank and the like for a long time, and is suitable for special working environments.

The specific structures of the base 1 and the protection component 4 are not particularly limited, the base 1 can be an installation platform or an installation seat on the installation platform, and the protection component 4 can be an integrated structure or a split structure. In order to prolong the service life of the height adjusting device and reduce the maintenance cost, in the embodiment, the base 1 is a mounting seat with a cavity, and the protection component 4 is a spliced cover body structure and comprises a spliced rotary power element shield 41, a plurality of main cover plates 42, a water retaining shield 43 and an encoder shield 44; the rotary power element shield 41 and the encoder shield 44 are respectively covered on the rotary power element 5 and the encoder 6; the number of the water retaining shields 43 is the same as that of the wedge assemblies 3, the water retaining shields are respectively sleeved on the wedge assemblies 3, and the water retaining shields 43 are connected with the base 1 and the main cover plates 42 on two sides through connecting pieces.

Since the bearing block 33 and the upper wedge slider 31 move in the height direction, in order to accommodate the height variation of the bearing block 33, the water blocking shield 43 is preferably constructed with a varying margin, such as a cover made of an elastic cover or waterproof nylon cloth.

Further, in order to ensure the sealing performance of the height adjusting device, a sealing member 14 for sealing a gap between the base 1 and the shield assembly 4 is provided on the base 1, and the shield assembly 4 is in contact with the sealing member 14. In order to mount the sealing member 14, in the present embodiment, a groove is provided on the base 1, the sealing member 14 is disposed in the groove, and the shield assembly 4 is also disposed in the groove and detachably connected to the base 1.

In order to ensure that the wedge component 3 is always positioned on the thread section, perform limit position protection and prevent the wedge component from moving beyond limit and damaging parts in some out-of-control states, in this embodiment, the base 1 and/or the screw rod are/is provided with more than 2 limiting parts 13, and the limiting parts 13 are positioned at the movement limit position of the wedge component 3.

Compared with the prior art, the 2+8 roller combined type thick plate blank high-reduction casting and rolling machine roller system height adjusting device provided by the utility model has the advantages that the transmission efficiency of the ball screw pair 2 is high, the full synchronization of the movement of the wedge components on the left side and the right side of the intermediate bearing seat can be achieved, the stepless adjustment of the height of the large-reduction roller surface of the casting and rolling machine is realized, the roller diameter change of the large-reduction roller due to the work abrasion is accurately compensated, the height of the lower roller surface of the large-reduction roller system is kept constant under 1500 tons of rolling force by utilizing the self-locking characteristic of the ball screw pair 2, the bearing force requirement is met, and the product quality is ensured. Simultaneously, through the optimization design of the equipment structure, a protective cover and edge sealing are added for the equipment, so that the equipment is suitable for severe working environments such as high-temperature radiation, cooling water dripping, scrap iron oxide peeling and the like during the working of a roller system under a large pressure, the safety and the stability of the operation of the wedge adjusting equipment are ensured, and the service life of the equipment is effectively prolonged.

The working principle and the use of the height adjusting device provided by the utility model are as follows:

the height adjusting device is installed at the lower window position of the mill housing through the base 1, the hydraulic motor is adopted to drive the ball screw pair 2, the inclined wedges at the two ends of the screw are driven to adjust the height of the bearing seat, the height adjusting device is used for compensating the roller surface elevation change caused by the roller diameter change of the lower large lower roller, and the elevation of the lower roller surface of the lower large lower roller is kept constant. When the height of the roller surface is adjusted, firstly, the instant roller diameter is determined, the hydraulic motor is controlled to rotate in the positive direction, the lower inclined wedge sliding block 32 drives the upper inclined wedge sliding block 31 to ascend, and the upper end surface of the bearing block 33 is in contact with the lower roller system bearing block cambered surface pad; the hydraulic motor continues to rotate, the roller system gradually rises along with the wedge, and the roller surface on the bearing seat of the roller system is separated from the roller changing track; the encoder 6 controls the hydraulic motor to drive the accurate lifting position of height adjustment, the bearing block 33 supports the bearing block to lift, and the lower roller system is adjusted to lift to a set continuous casting process surface elevation under a large pressing roller surface; the hydraulic motor stops rotating, the built-in brake is locked, and the roller surface height adjusting action is completed.

Through the embodiment, the utility model has the following beneficial effects or advantages:

1) compared with the prior art, the 2+8 roller combined type high-reduction casting and rolling machine roller system height adjusting device for the thick plate blank has the advantages that the transmission efficiency of the ball screw pair is high, the left and right inclined wedges can move completely synchronously, the stepless adjustment of the height of the high-reduction roller surface of the casting and rolling machine is realized, the roller diameter change of the high-reduction roller due to work abrasion is accurately compensated, the height of the lower roller surface of the high-reduction roller system is kept constant under 1500 tons of rolling force by utilizing the self-locking characteristic of the ball screw pair, the bearing force requirement is met, and the product quality is ensured.

2) According to the height adjusting device for the 2+8 roller combined type thick plate blank high-reduction casting and rolling machine roller system, through the optimization design of the equipment structure, a protective cover and edge sealing are added for the equipment, so that the device is suitable for severe working environments such as high-temperature radiation, cooling water dripping and oxidized iron scrap stripping when the high-reduction roller system works, the safety and stability of the operation of the wedge adjusting equipment are ensured, and the service life of the equipment is effectively prolonged.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A2 +8 roller combined type high-reduction casting and rolling mill roller system height adjusting device for a thick plate blank is characterized by comprising a base, at least 2 wedge assemblies, a supporting seat, a rotating power element and a ball screw pair driven by the rotating power element, wherein the wedge assemblies, the supporting seat, the rotating power element and the ball screw pair are all arranged on the base; the lead screw of the ball screw pair is arranged in the supporting seat in a penetrating way, the lead screw comprises a left-handed thread section and a right-handed thread section, at least 1 ball nut is arranged on the left-handed thread section and the right-handed thread section, the number of the ball nuts is not less than that of the wedge components, each wedge component is arranged on the ball screw pair through the ball nut, the inclination directions of the wedge components positioned on the left-handed thread section and the wedge components positioned on the right-handed thread section are opposite, each wedge component comprises an upper wedge slide block and a lower wedge slide block, the upper wedge slide block and the lower wedge slide block are provided with inclined planes which are mutually contacted and matched, the lower wedge slide block is fixedly connected with the corresponding ball nut, a guide device is arranged on the base, and the guide device is arranged along the lifting direction of the upper wedge slide block, and the guide device is connected with the upper wedge slide block in a sliding manner.

2. The 2+8 roller combination type thick slab high reduction caster roller system height adjusting device of claim 1, wherein the supporting seat comprises a middle bearing seat and an end bearing seat, the screw further comprises a polish rod section arranged between the left-hand thread section and the right-hand thread section, the polish rod section is arranged in the middle bearing seat in a penetrating way, one end of the screw is arranged in the end bearing seat, and the other end of the screw is connected with the rotating power element.

3. The 2+8 roller combination type thick slab high reduction caster roller system height adjusting device as claimed in claim 1, characterized in that the lower wedge slide block is provided with a through hole, the lower wedge slide block is sleeved on the screw rod through the through hole, and the through hole is provided with an assembling groove for sleeving with the ball nut.

4. The 2+8 roller combination type thick plate blank high reduction casting and rolling mill roller system height adjusting device according to claim 3, characterized in that the upper wedge sliding block is provided with a bearing block for contacting with the roller system.

5. The 2+8 roller combination thick slab high reduction caster roller train height adjustment apparatus of claim 4, wherein said cam assembly further comprises a slide plate disposed between the inclined surface of said upper cam slide and the inclined surface of said lower cam slide.

6. The 2+8 roller combination thick slab high reduction caster roller train height adjustment apparatus of claim 5, wherein said slide plate has a length less than the length of said upper cam block along the slope of said cam assembly, each of said cam assemblies further comprising a first scraper set and a second scraper set, said first scraper set being disposed at the bottom end of said upper cam block and contacting said lower cam block, said second scraper set being disposed at the bottom end of said lower cam block and contacting said base.

7. The 2+8 roller combination type thick slab high reduction casting and rolling mill roller system height adjusting device as claimed in claim 1, characterized in that the 2+8 roller combination type thick slab high reduction casting and rolling mill roller system height adjusting device further comprises a protection component, the protection component is detachably connected with the base, the protection component and the base enclose a closed installation cavity, the wedge component, the supporting seat, the rotating power component and the ball screw pair are all arranged in the installation cavity, and a through hole for lifting and lowering the upper wedge slide block is arranged on the protection component.

8. The 2+8 roller combination thick slab high reduction caster roller train height adjustment apparatus of claim 7, wherein said base is provided with a seal for sealing a gap between said base and said guard assembly.

9. The 2+8 roller combination thick slab high reduction caster roller train height adjusting device of any one of claims 1-8, wherein more than 2 limiting members are arranged on the base and/or the lead screw, and the limiting members are positioned at the movement limit positions of the wedge assemblies.

10. The 2+8 roller combination thick slab high reduction casting and rolling mill roller system height adjusting device as claimed in any one of claims 1-8, characterized in that, the 2+8 roller combination thick slab high reduction casting and rolling mill roller system height adjusting device further comprises a control device and a detection device, the control device is respectively electrically connected with the detection device and the rotating power element, the detection device is used for detecting the movement displacement of the upper wedge slide block and/or the lower wedge slide block.