CN218475774U - Device is changed to wide and thick plate rolling mill stand roller - Google Patents

Abstract

The utility model discloses a device is changed to wide and thick board rolling mill housing roll belongs to rolling mill machinery technical field, including rolling mill housing, the supporting bracket, the ear seat, climbing mechanism and sled board, the housing roll is installed in the entry and the exit of the inside rolling direction of rolling mill housing, the supporting bracket sets up the below of the housing roll inside the rolling mill housing, elevating system installs the both sides at the rolling mill housing above the supporting bracket through ear seat symmetry, the below of housing roll still is provided with snow sled board, the housing roll rises to a certain height through elevating system, utilize the driving to hang snow sled board to the roll table of housing roll rolling direction both sides, manual barring places sled board under the housing roll, rethread elevating system will control the housing roll decline, fall the housing roll on snow sled board, through manual barring with housing roll and sled board deviate from the rolling mill housing roll outside simultaneously, can realize the housing roll, shorten the change time greatly, high efficiency is fast replaced; the labor intensity is reduced, and the operation safety is ensured.

Description

Device is changed to wide and thick plate rolling mill stand roller

Technical Field

The utility model relates to a rolling mill machinery technical field, especially a device is changed to wide and thick board rolling mill frame roller.

Background

A rough rolling mill and a finishing rolling mill are arranged on a production line of the thin and wide plates, and a set of three-roll stand rolls, four in total, are respectively arranged at the inlet and the outlet of each rolling mill and the inner position of a housing. The rolling mill frame roller adopts a periodical replacement and maintenance system, because the frame roller is installed inside a rolling mill housing, a travelling crane cannot be used for directly lifting, at present, a lifting device of rolling components such as a rolling mill support roller balance beam and a guide box can be used for realizing the replacement of the rolling mill frame roller by frequently and manually inching an electromagnetic directional valve to realize the lifting of the rolling mill support roller balance beam and the guide box, the operation efficiency is low, the safety risk is high, the installation and the disassembly are more complicated, the average operation time for replacing the frame roller is 12 hours, the current use is 6 hours, the yield is influenced by 200T every hour, and the yield is influenced by replacing the frame roller for 12 times every year by 1.4 ten thousand tons.

To above not enough, a plurality of wide and thick plate rolling mill frame roller change devices have been developed in the industry, like chinese patent CN107511399 the utility model provides a rolling mill frame roller changes and uses auxiliary fixtures includes at least: the tail ends of two branch guide round rods of the Y-shaped guide structure are provided with rollers, and a main rod of the Y-shaped guide structure is connected with the jacking adjusting mechanism; the auxiliary tool is easy to install, small in size and weight and capable of fully meeting the requirement of the small inner space of the rolling mill. The utility model also provides a method for replacing the rack roller, which comprises the steps of dismantling the rack roller and installing the rack roller; in the process of dismantling the stand roller and installing the stand roller, two auxiliary tools for replacing the stand roller of the rolling mill are installed on an inner cross beam of the rolling mill, and the stand roller can be prevented from inclining when being drawn out and penetrated through the combined action of the travelling crane and the chain block, so that the replacing efficiency of the stand roller is improved, and the travelling crane time occupied by replacing the stand roller is shortened; and in the process of dismantling and installing the frame roller, a large amount of time is not spent on the transportation of the special lifting appliance, so that the dismantling and installing efficiency is improved. In addition, as for the replacement device and the replacement method of the frame roller of the wide and thick plate rolling mill in CN106424149, the replacement device of the frame roller of the wide and thick plate rolling mill comprises a cross beam, a front claw, a rear claw, a pin shaft, an outer supporting rod, an inner supporting rod and a nut, wherein the front claw and the rear claw are respectively connected with the cross beam through two pin shafts; the outer supporting rod and the inner supporting rod are connected to the cross beam through nuts, the heads of the outer supporting rod and the inner supporting rod are provided with threads, and the heights of the outer supporting rod and the inner supporting rod are adjusted through rotating the nuts. A method for replacing a frame roller of a wide and thick plate rolling mill utilizes a frame roller device to replace. The beneficial effects of the utility model are that shortened the change time of wide and thick plate rolling mill breast roll, improved maintenance efficiency.

In conclusion, in the first patent, the two auxiliary tools for replacing the mill stand rollers are arranged on the inner cross beam of the rolling mill, and the mill stand rollers are disassembled under the combined action of the travelling crane and the chain block, so that the disassembling process is complex, the efficiency is low, and the safety is poor; the second type is through the height of swivel nut regulation outer die-pin and interior die-pin, and the dismouting process is also more complicated, and is efficient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the background art and provides a device for replacing the frame roller of the wide and thick plate rolling mill, which is convenient for installing and replacing the frame roller and has simple operation method; the quick replacement can be realized, the replacement time is greatly shortened, and the efficiency is doubled compared with that of the traditional replacement method; the labor intensity is reduced, and the operation safety is ensured; the replacement of the frame roller realizes continuity, rapidness and accuracy, and obtains good economic effect in actual production.

The technical proposal of the utility model is that,

the frame roller is arranged at an inlet and an outlet of the rolling direction inside the mill housing, the frame roller is a triple roller combination, a transmission shaft drives a triple roller to rotate simultaneously through internal gear transmission, the main function is to help a rolled piece to bite into a roller gap of the mill smoothly, the supporting frame is arranged below the frame roller inside the mill housing, the jacking mechanism is symmetrically arranged on two sides of the mill housing above the supporting frame through the ear seats, the lifting of the frame roller is realized through the jacking mechanism, the snow sledge plate is further arranged below the frame roller and used for supporting the frame roller, the frame roller is lifted to a certain height through the jacking mechanism, the snow sledge plate is hung on roller ways on two sides of the rolling direction of the frame roller through a travelling crane, the manual barring is used for placing the sled plate under the frame roller, the frame roller is controlled to fall through the jacking mechanism, the frame roller falls on the snow sledge plate, and the frame roller and the sled plate are pulled out of the outer side of the mill housing through the manual barring.

According to the utility model, the jacking mechanism comprises a hydraulic cylinder, a guide rod and a bracket, the bracket is arranged at the upper end of the bottom of the cylinder body of the hydraulic cylinder, the ejector rod of the hydraulic cylinder is hinged with an ear seat, the bottom end of the guide rod is connected with the ear seat, the top end of the guide rod is connected with the mill housing, the cylinder body of the hydraulic cylinder is connected with the guide rod in a sliding way through a support, and the hydraulic cylinder drives the bracket to move up and down along the guide rod by driving the hydraulic cylinder; the hydraulic cylinder can only vertically lift through the guide rod, so that the hydraulic cylinder is prevented from being inclined in the lifting process to cause accidents.

According to the utility model, the sleigh comprises a steel plate seat, a V-shaped seat and lifting lugs, the middle part of the steel plate seat in the length direction is provided with the V-shaped seat, the four corner ends of the steel plate seat are provided with the lifting lugs, one end of the steel plate is provided with an extension frame, and the extension frame is convenient to be connected with a manual barring; the ski board mainly plays a role in transporting and hoisting the rack roller.

According to the utility model discloses preferentially, the ear seat include first gusset, second gusset, third gusset, fourth gusset and fifth gusset, fifth gusset erect and set up, the left and right sides of one side of fifth gusset is connected with one end of two first gussets of erectting, the other end of two first gussets of erectting all is provided with through-hole and screw, the axle is installed in the through-hole of two first gussets, the axle articulate with the tip of the ejector pin of pneumatic cylinder, the both ends of axle are provided with the draw-in groove respectively, the cardboard is installed in the draw-in groove and is fixed on the lateral surface of two first gussets through bolt and screw; mounting holes are formed in the two side ends of the fifth rib plate, and a positioning groove is formed in the other surface of the fifth rib plate; a second rib plate and a fourth rib plate are respectively and transversely arranged at the upper end and the lower end between the two vertical first rib plates, a third rib plate is vertically arranged between the second rib plate and the fourth rib plate, and the bottom surface of the fourth rib plate is in contact with the bottom surface of the bearing frame; the ear seat is used for connecting a fixed hydraulic cylinder, supporting the hydraulic cylinder to lift, the second rib plate, the third rib plate and the fourth rib plate inside the ear seat are used for supporting a guide rod of the hydraulic cylinder, vertical downward force of the hydraulic cylinder is transmitted to the supporting frame, the protection is prevented from being damaged by stress, and the safety of the whole lifting process is ensured.

According to the utility model discloses it is preferred, the fifth gusset of ear seat pass through the bolt and the mounting hole is fixed on the rolling mill housing, still be provided with rectangular key on the rolling mill housing, constant head tank and rectangular key assembly cooperation.

According to the utility model discloses it is preferred, the supporting rack include steel sheet, stand and crossbeam, four angle ends of steel sheet below all be provided with the stand, two liang the stand between be provided with the crossbeam, the bottom surface of top and the steel sheet of stand between be provided with the bearing diagonal, the supporting rack mainly undertakes the vertical lift power of pneumatic cylinder, gives the rolling mill memorial archway root with power transmission, guarantees pneumatic cylinder lift safety.

According to the utility model, preferably, the hydraulic cylinder is connected with a hydraulic system, the hydraulic system comprises a hydraulic hose, a stop valve, a pressure gauge, a speed regulating valve, a one-way valve, a manual reversing valve and a pressure reducing valve, the hydraulic cylinder is connected with an external oil pressure system through the hydraulic hose, and the stop valve, the pressure gauge, the speed regulating valve, the one-way valve, the manual reversing valve and the pressure reducing valve are sequentially arranged between the hydraulic hose and the oil pressure system; the valve position of a manual reversing valve is manually switched, a pressure oil system is externally connected to supply pressure oil, a one-way valve is opened, flow regulation is carried out through a speed regulating valve, and the oil enters a rod cavity and a rodless cavity of the hydraulic cylinder, so that the hydraulic cylinder is lifted and lowered; the hydraulic cylinder is driven by a hydraulic system, and a hydraulic hose of the hydraulic cylinder is used for connecting the hydraulic cylinder with an external oil pressure system, so that the impact vibration of the system is reduced; the stop valve is used for emergency closing of the system and maintenance; the pressure gauge is used for detecting system pressure and judging system problems; the speed regulating valve is used for regulating the lifting speed of the hydraulic cylinder to prevent the load speed from being abnormal; the left check valve and the right check valve form a hydraulic lock for keeping the stop position of the load; the manual reversing valve is used for lifting and switching of the hydraulic cylinder; the pressure reducing valve is used for adjusting the bearing pressure of the system and stabilizing the pressure of the system.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a below installation supporting rack, climbing mechanism at the inside frame roller of rolling mill housing realize the lift of frame roller, through on placing the snow sleigh board with the frame roller, lie in frame roller below through the accurate control snow sleigh board of manual barring, then deviate from the outside of rolling mill housing to hang out the roll table with the frame roller through the driving, with the dismantlement of accomplishing the frame roller, the installation is vice versa, the utility model discloses the installation, change the frame roller convenient, operating method is simple, can realize quick, continuous and accurate change, shortens the change time greatly, and efficiency is improved one time than traditional change method, reduces intensity of labour, guarantees operation safety.

2. The utility model discloses a sled board supports fixed frame roller, has simplified the flow of frame roller hoist and mount through the lug of sled board, avoids utilizing the driving to fix the both ends of frame roller respectively, has reduced the hoist and mount time to improve and change efficiency.

3. The utility model discloses a connection of supporting rack and ear seat, through the contact above fourth gusset and the supporting rack of ear seat, by the pressure of the main climbing mechanism of supporting rack and frame roller, the rolling mill housing provides the auxiliary force, and protection rolling mill housing can not the atress damage to ensure the safety of whole lift process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is an assembly drawing of the device for changing the frame roll of a wide and thick plate rolling mill of the present invention,

figure 2 is an assembly view of the frame roller of the present invention,

FIG. 3 is a front view of the sled of the present invention,

figure 4 is a top view of the ski of the present invention,

figure 5 is a diagram of the hydraulic system of the present invention,

figure 6 is an assembly drawing of the hydraulic cylinder and the ear seat of the utility model,

figure 7 is a front view of the ear mount of the present invention,

figure 8 is a left view of the ear seat of the present invention,

fig. 9 is a structural view of the support frame of the present invention.

1-a frame roller; 2-a ski board; 3, a hydraulic cylinder; 4, ear seat; 5, a support frame; 6-rolling mill housing; 21-steel plate seat; 22-a V-shaped seat; 23, lifting lugs; 24-an elongated frame; 31-hydraulic hose; 32-a stop valve; 33-pressure gauge; 34-a speed regulating valve; 35-a one-way valve; 36-a manual directional valve; 37-a pressure reducing valve; (ii) a 39-a guide rod; 41-a first rib plate; 42-shaft; 43-second gusset; 44-a third web; 45-fourth rib plate; 46-a fifth web; 47-clamping plate; 48-long bolt; 411 — a through hole; 412 screw holes; 421. -a card slot; 461-mounting holes; 462-positioning groove; 51-steel plate; 52-inclined support; 53-upright column; 54. -a cross-beam.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper/lower end", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "disposed/nested", "connected", and the like, are to be interpreted broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-9, the present invention provides a technical solution: a wide and thick plate rolling mill frame roller replacing device comprises a rolling mill housing 6, a supporting frame 5, an ear seat 4, a jacking mechanism and a sleigh plate 2, as shown in figures 1 and 2, the frame roller 1 is installed at an inlet and an outlet of the rolling direction inside the rolling mill housing 6, the frame roller 1 is a triple roller combination, through internal gear transmission, a transmission shaft drives the triple rollers to rotate simultaneously, the main function is to help a rolled piece to smoothly bite into a roll gap of the rolling mill, the supporting frame 5 is arranged below the frame roller 1 inside the rolling mill housing 6, the jacking mechanism is symmetrically installed at two sides of the rolling mill housing 6 above the supporting frame 5 through the ear seat 4, the jacking mechanism realizes the lifting of the frame roller 1 through the jacking mechanism, the jacking mechanism comprises a hydraulic cylinder 3, a guide rod 39 and a bracket 6, the upper end of the bottom of the cylinder body of the hydraulic cylinder 3 is provided with a bracket, the contact surface between the top surface of the bracket and the frame roller 1 adopts an inclined plane which inclines downwards, namely the section of the top surface of the bracket is in an M shape, the top surface of the hydraulic cylinder is hinged with the ear seat 4, the top rod of the hydraulic cylinder 3, the ear seat 4 is connected with the top end of the rolling mill housing 4, the guide rod 39 is connected with the top end of the hydraulic cylinder support of the rolling mill housing 6, and the hydraulic cylinder 3 is connected with the hydraulic cylinder body, and the hydraulic cylinder 3, and the hydraulic cylinder body is connected with the hydraulic cylinder body through the hydraulic cylinder body 3, and the hydraulic cylinder body 3; the hydraulic cylinder 3 can only vertically lift through the guide rod 39, so that the hydraulic cylinder 3 is prevented from being inclined in the lifting process to cause accidents. The lug seat 4 comprises a first rib plate 41, a second rib plate 43, a third rib plate 44, a fourth rib plate 45 and a fifth rib plate 46, the fifth rib plate 46 is vertically arranged, the left side and the right side of one surface of the fifth rib plate 46 are connected with one end of the two vertical first rib plates 41, the other end of each of the two vertical first rib plates 41 is provided with a through hole 411 and a screw hole 412, a shaft 42 is arranged in the through holes 411 of the two first rib plates 41, the shaft 42 is hinged with the end part of the ejector rod of the hydraulic cylinder 3, two ends of the shaft 42 are respectively provided with a clamping groove 421, and a clamping plate 47 is arranged in the clamping grooves 421 and fixed on the outer side surfaces of the two first rib plates 41 through a long bolt 48 and the screw holes 412; mounting holes 461 are formed in two side ends of the fifth rib plate 46, and positioning grooves 462 are formed in the other surface of the fifth rib plate 46; a second rib plate 43 and a fourth rib plate 45 are respectively transversely arranged at the upper end and the lower end between the two vertical first rib plates 41, a third rib plate 44 is vertically arranged between the second rib plate 43 and the fourth rib plate 45, and the bottom surface of the fourth rib plate 45 is in contact with the bottom surface of the bearing frame; the ear seat 4 is used for connecting and fixing the hydraulic cylinder 3 and supporting the hydraulic cylinder 3 to ascend and descend, the second rib plate 43, the third rib plate 44 and the fourth rib plate 45 in the ear seat are used for supporting the guide rod 39 of the hydraulic cylinder 3, the vertical downward force of the hydraulic cylinder 3 is transmitted to the supporting frame 5, the ear seat is protected from stress damage, and the safety of the whole ascending and descending process is ensured. The supporting frame 5 comprises steel plates 51, upright columns 53 and cross beams 54, the upright columns 53 are arranged at four corner ends below the steel plates 51, the cross beams 54 are arranged between every two upright columns 53, the inclined supports 52 are arranged between the upper portions of the upright columns 53 and the bottom surfaces of the steel plates 51, the supporting frame 5 mainly bears the vertical lifting force of the hydraulic cylinders 3, the force is transmitted to the roots of the rolling mill housing 6, and the lifting safety of the hydraulic cylinders 3 is guaranteed. A ski board 2 is further arranged below the frame roller 1, the ski board 2 comprises a steel plate seat 21, a V-shaped seat 22 and lifting lugs 23, the V-shaped seat 22 is arranged in the middle of the steel plate seat 21 in the length direction, the lifting lugs 23 are arranged at four corner ends of the steel plate seat 21, and a lengthened frame 24 is arranged at one end of the steel plate seat 21; the skis 2 are used for supporting the frame roller 1 and mainly play roles in transporting and hoisting the frame roller 1, the frame roller 1 ascends to a certain height through a jacking mechanism, the skis 2 are hoisted to roller ways on two sides of the rolling direction of the frame roller 1 through a travelling crane, the skis 2 are placed under the frame roller 1 through a manual barring, the frame roller 1 is controlled to descend through the jacking mechanism, the frame roller 1 falls onto the skis 2, and the frame roller 1 and the skis 2 are separated from the outer side of the rolling mill housing 6 through the manual barring.

The fifth rib plate 46 of the ear seat 4 is fixed on the rolling mill housing 6 through a bolt 48 and a mounting hole 461, the rolling mill housing 6 is further provided with a long key (not shown in the figure), and the positioning groove 462 is matched with the long key in an assembling manner.

The hydraulic cylinder 3 is connected with a hydraulic system, the hydraulic system comprises a hydraulic hose 31, a stop valve 32, a pressure gauge 33, a speed regulating valve 34, a check valve 35, a manual reversing valve 36 and a pressure reducing valve 37, the hydraulic cylinder 3 is connected with an external oil pressure system through the hydraulic hose 31, and the stop valve 32, the pressure gauge 33, the speed regulating valve 34, the check valve 35, the manual reversing valve 36 and the pressure reducing valve 37 are sequentially arranged between the hydraulic hose 31 and the oil pressure system; the valve position of the manual reversing valve 36 is manually switched, a pressure oil supply system is externally connected with the one-way valve 35 for supplying pressure oil, the flow rate is regulated through the speed regulating valve 34, and the oil enters a rod cavity and a rodless cavity of the hydraulic cylinder 3, so that the hydraulic cylinder 3 is lifted and lowered; the hydraulic cylinder 3 is driven by a hydraulic system, and a hydraulic hose 31 of the hydraulic cylinder is used for connecting the hydraulic cylinder 3 with an external oil pressure system, so that the impact vibration of the system is reduced; the stop valve 32 is used for emergency closing of the system and maintenance; the pressure gauge 33 is used for system pressure detection and system problem judgment; the speed regulating valve 34 is used for regulating the lifting speed of the hydraulic cylinder 3 to prevent the load speed from being abnormal; the left and right check valves 35 form a hydraulic lock for the stop position holding of the load; the manual reversing valve 36 is used for switching the lifting of the hydraulic cylinder 3; the pressure reducing valve 37 is used to adjust the system load pressure and stabilize the system pressure.

The working principle is as follows: the method comprises the steps that a support frame 5 is installed under a frame roller 1 of a mill housing 6, the support frame 5 is welded on the mill housing 6, an upright post 53, a steel plate 51, a cross beam 54 and an inclined support of the support frame 5 are connected in a welding mode, the upright post 53 can be made of H-shaped steel, an ear seat 4 is installed above the steel plate 51 of the support frame 5, a positioning groove 462 of a fifth rib plate 46 of the ear seat 4 is assembled and positioned with a long strip key welded on the mill housing 6, the fifth rib plate 46 is fixed on the mill housing 6 through a mounting hole 461 through a bolt, the mounting position of the ear seat 4 can be adjusted according to the position of the frame roller 1, so that a hydraulic cylinder 3 is just located under the frame roller 1 to be disassembled or installed, the lower end of a guide rod 39 is welded with a second rib plate 43 of the ear seat 4, the upper end of the guide rod 39 is installed and fixed on the mill housing 6 through the bolt, a support is arranged on a cylinder body of the hydraulic cylinder 3, the support is connected with the guide rod 39 in a sliding mode, the guide rod 39 plays a role in fixing the hydraulic cylinder 3 and meanwhile, the hydraulic cylinder 3 is guaranteed to be kept in a vertical state during work; the hydraulic station of the jacking mechanism is the original hydraulic station of the rolling mill, and the used oil pressure system can meet the use requirements of parameters such as pressure, flow and the like of the hydraulic cylinder 3; on the other hand, the investment cost can be reduced by utilizing the existing equipment.

The working steps are as follows: 1. the rolling mill supporting roll is balanced to be in a high position, the inlet and outlet guide box is in a high position, the energy source of related equipment is cut off (only the related hydraulic station is kept to operate), and safety protection measures are implemented; opening the locking device of the frame roller 1, opening the clutch of the frame roller 1, and lifting the frame roller 1 to a high position by using the hydraulic cylinder 3;

2. the method comprises the following steps of (1) conveying a ski 2 to a position specified by the bottom of a frame roller 1, and dropping the frame roller 1 by using a hydraulic cylinder 3, and simultaneously dropping the frame roller 1 onto the ski 2;

3. the skis 2 and the frame roller 1 are simultaneously dragged out of the outer side of a mill housing 6 by using a travelling crane, the distance between the gear transmission end of the frame roller 1 and the pushing head (the static end) of the pushing bed is measured, the position of the new frame roller 1 is determined by reloading, and the frame roller 1 is hoisted to a site to be assembled by using the travelling crane;

4. and the new frame roller 1 is reloaded by hoisting the new frame roller 1 onto the ski board 2 by using a travelling crane in the reverse method of the dismounting step.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (7)

1. The utility model provides a wide and thick plate rolling mill frame roller changes device which characterized in that: including rolling mill housing (6), supporting rack (5), ear seat (4), climbing mechanism and sled board (2), the entry and the exit in the rolling direction of the inside of rolling mill housing (6) are installed in rolling mill housing (1), supporting rack (5) set up the below in rolling mill housing (6) inside frame roller (1), climbing mechanism install the both sides in rolling mill housing (6) of supporting rack (5) top through ear seat (4) symmetry, realize the lift of frame roller (1) through climbing mechanism, the below of frame roller (1) still be provided with sled board (2), sled board (2) are used for supporting frame roller (1).

2. The wide and thick plate rolling mill stand roller replacing device according to claim 1, wherein: climbing mechanism include pneumatic cylinder (3), guide bar (39) and bracket, the cylinder body bottom upper end of pneumatic cylinder (3) be provided with the bracket, the ejector pin and the ear seat (4) of pneumatic cylinder (3) are articulated, the bottom and the ear seat (4) of guide bar (39) are connected, the top and the rolling mill memorial archway (6) of guide bar (39) are connected, the cylinder body of pneumatic cylinder (3) passes through support and guide bar (39) sliding connection, make pneumatic cylinder (3) drive the bracket along guide bar (39) up-and-down motion through driving pneumatic cylinder (3).

3. A wide and thick plate rolling mill shell roll changing device according to claim 2, characterized in that: the sled plate (2) comprises a steel plate seat (21), a V-shaped seat (22) and lifting lugs (23), the V-shaped seat (22) is arranged in the middle of the steel plate seat (21) in the length direction, the lifting lugs (23) are arranged at four corner ends of the steel plate seat (21), and a lengthened frame (24) is arranged at one end of the steel plate seat (21).

4. A device for changing the stand rolls of a wide and thick plate rolling mill according to claim 3, characterized in that: the ear seat (4) comprises a first rib plate (41), a second rib plate (43), a third rib plate (44), a fourth rib plate (45) and a fifth rib plate (46), wherein the fifth rib plate (46) is vertically arranged, the left side and the right side of one surface of the fifth rib plate (46) are connected with one ends of the two vertically arranged first rib plates (41), the other ends of the two vertically arranged first rib plates (41) are respectively provided with a through hole (411) and a screw hole (412), a shaft (42) is arranged in the through holes (411) of the two first rib plates (41), the shaft (42) is hinged with the end part of a mandril of the hydraulic cylinder (3), two ends of the shaft (42) are respectively provided with a clamping groove (421), and clamping plates (47) are arranged in the clamping grooves (421) and fixed on the outer side faces of the two first rib plates (41) through long bolts (48) and the screw holes (412); mounting holes (461) are formed in the two side ends of the fifth rib plate (46), and positioning grooves (462) are formed in the other surface of the fifth rib plate (46); the upper end and the lower end between the two vertical first rib plates (41) are respectively and transversely provided with a second rib plate (43) and a fourth rib plate (45), a third rib plate (44) is vertically arranged between the second rib plate (43) and the fourth rib plate (45), and the bottom surface of the fourth rib plate (45) is in contact with the bottom surface of the bearing frame.

5. A device for changing the stand rolls of a wide and thick plate rolling mill according to claim 4, characterized in that: fifth rib plate (46) of ear seat (4) pass through bolt and mounting hole (461) and fix on rolling mill memorial archway (6), still be provided with the rectangular key on rolling mill memorial archway (6), constant head tank (462) and rectangular key assembly cooperation.

6. A wide and thick plate rolling mill shell roll changing device according to claim 1, characterized in that: the supporting frame (5) comprises a steel plate (51), stand columns (53) and cross beams (54), the stand columns (53) are arranged at four corner ends below the steel plate (51), the cross beams (54) are arranged between every two stand columns (53), and inclined supports (52) are arranged between the upper portions of the stand columns (53) and the bottom surfaces of the steel plate (51).

7. A wide and thick plate rolling mill stand roll changing device according to any one of claims 2 to 5, characterized in that: pneumatic cylinder (3) be connected with hydraulic system, hydraulic system include hydraulic hose (31), stop valve (32), manometer (33), governing valve (34), check valve (35), manual switching-over valve (36) and relief pressure valve (37), pneumatic cylinder (3) be connected with external oil pressure system through hydraulic hose (31), stop valve (32), manometer (33), governing valve (34), check valve (35), manual switching-over valve (36) and relief pressure valve (37) have set gradually between hydraulic hose (31) and the oil pressure system.

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