CN212310421U

CN212310421U - Intermediate roller limiting block of roller changing vehicle

Info

Publication number: CN212310421U
Application number: CN202020358125.2U
Authority: CN
Inventors: 李军
Original assignee: Bengang Steel Plates Co Ltd
Current assignee: Bengang Steel Plates Co Ltd
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2021-01-08
Anticipated expiration: 2030-03-20

Abstract

The utility model discloses a middle roller limiting block of a roller changing vehicle, the distance between two guide rails of a middle roller is 765mm, the distance of the middle roller when the guide rails and the limiting block are not installed is 835mm, and the length is 1340 mm; the limiting block a is a limiting device on each roller guide rail of the improved front roller changing vehicle; the limiting block b is newly designed, and a new limiting block b is installed on a cross beam at the upper rear part of the roller changing trolley or welded at the rear part of the roller changing trolley and used for limiting the upper middle roller. The utility model has the advantages that: the improved limiting block is applied to the hoisting process to achieve safe and quick roll hoisting, an operator does not need to climb up and down on the roll changing vehicle, potential safety hazards are eliminated, and the quality and safety are realized.

Description

Intermediate roller limiting block of roller changing vehicle

Technical Field

The utility model discloses you relate to machinery, specifically are roller stopper in middle of roll-changing car.

Background

The three-cold-rolling five-rack six-roller cold rolling mill is designed by German Simmark company (SMS SIEMAG), is the widest and most advanced cold rolling mill in the world at present, has the maximum rolling force of 3300T, the maximum rolling speed of 1500m/min, the annual design yield of 230 ten thousand tons, and the average monthly yield of 18-20 ten thousand tons. The number of times of changing the working roll per month is 400-500 on average, namely 800-1000 times of lifting the working roll on a roll changing vehicle per month on average.

In order to improve the output of the rolling mill, the unit is provided with a quick roll changing vehicle, and online roll changing can be realized. The online roll changing means that the strip steel is still in the frame, and the roll changing vehicle extracts the old intermediate roll and the working roll which are off the machine into the roll changing vehicle; the roller changing vehicle horizontally moves, new middle rollers and new working rollers are pushed into the rack, the roller changing is finished, and then the roller changing vehicle backwards moves to the original parking position. The whole roll changing process has high automation degree and short time, thereby ensuring the stable and high yield of the rolling mill.

When the old intermediate roll and the working roll of the lower machine in the rack are clamped by the trolley clamp on the roll changing trolley and pumped to the roll changing trolley, the gear on the trolley rolls on the rack on the roll changing trolley to walk under the traction of the pumping trolley, and the lower sliding plate of the bearing seat is in contact with the guide rail of the roll changing trolley and slides backwards along the guide rail. And the left guide rail and the right guide rail at the rear part of the roll changing vehicle are respectively provided with a limiting block, and after the roll moves backwards for a certain distance, the bearing block touches the limiting block, so that the roll stops moving. The extraction trolley continues to travel backwards, and stops when the electrical limit switch is touched. The limiting block of the middle roller is blocked on the front surface of the bearing seat, and the limiting block of the working roller is blocked in front of the operating arm of the bearing seat.

The sizes of the upper bearing seat and the lower bearing seat on the operation side in the width direction are different, the upper bearing seat is 100mm wider than the lower bearing seat, the widest part of a locking device (commonly called a door-shaped frame and an operation arm) of the bearing seat on the operation side is 780mm, the total length of the bearing seat on the operation side is 1210mm, and the left side and the right side of the operation arm are respectively provided with two grooves. The locking device mainly plays a role; after the trolley on the roll changing trolley pushes the roll to enter the frame, the hydraulic cylinders on two sides of the operation side of the frame extend out and are inserted into the grooves of the operation arms, so that the bearing block on the operation side is fixed in the frame, and the bearing block on the transmission side is not provided with a locking device and floats in the frame.

The weight of a pair of working rolls is 16.5T, and 5 steps are needed when the working rolls are hoisted to a roll changing trolley track; firstly, a pair of working rolls are hoisted to the upper part of an idle parking space of a roll changing vehicle, and the axis of each roll is roughly adjusted to be positioned at the center of the parking space. ② the working roll is transversely moved to the back of the roll changing car, and the moving distance must be more than 1210 mm. And thirdly, vertically descending the roller by a descending distance larger than 880 mm. And fourthly, transversely moving the working roll to move towards the front of the roll changing car, and vertically lowering the roll again on a track of the roll changing car after the operation arm beam is positioned at the inner side of the working roll limiting block. Fifthly, the steel wire rope hung on the roller is picked off, the cushion block between the upper working roller bearing seat and the lower working roller bearing seat is taken out, and the working roller standby operation is finished.

From the lifting step of the working roll standby roll, the lifting process is complicated, long in use time and unsafe. The width space in the parking space of the roller changing vehicle is limited, and the roller needs to be repeatedly adjusted transversely and longitudinally by a crown block in order to accurately fall a pair of rollers on the track. In addition, it is very difficult to quickly position the rolls correctly during adjustment due to the swinging of the hangers. The roll changing vehicle has high automation degree originally during design, but the roll preparing efficiency is not high due to the design defect in the roll preparing process, and the roll changing vehicle is not matched with automation equipment.

The reason for the difficulty in hoisting is that the distance between the two limit blocks is 682mm, the width of the upper working roll operating arm is 740mm, the two stop irons are added on the operating arm, and the widest part is 780mm, so that the pair of working rolls can not be hoisted into the roll changing vehicle vertically, and the pair of working rolls can not be hoisted by moving forwards and backwards in the transverse direction, descending and waiting to move to avoid the limit blocks of the middle rolls. After the working rolls fall into the track, the operators jump into the roll changing car again to take out the cushion blocks between the upper working roll and the lower working roll.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a middle roller limiting block of a roller changing vehicle; the specific technical scheme is as follows:

a roller changing vehicle middle roller limiting block is characterized in that the distance between two guide rails of a middle roller is 765mm, the distance between the middle roller and the guide rails without the guide rails and the limiting block is 835mm, the length of the middle roller is 1340mm, and a limiting block a is a limiting device on each roller guide rail of a roller changing vehicle before improvement; the limiting block b is newly designed, and a new limiting block b is installed by utilizing a cross beam at the upper rear part of the roll changing trolley or welded at the rear part of the roll changing trolley and used for limiting the upper middle roll; after the proper height of the limiting block b is increased, the limiting block b is blocked right in front of the middle roller operating arm, and the position of the limiting block b on the middle roller track after the optimized design is changed, but the function is unchanged;

the limiting block b comprises a connecting plate, an adjusting gasket, a left guide rail support frame, a right guide rail support frame, a groove-shaped blocking iron and a screw;

the groove-shaped stop iron is clamped on the upright posts of the left and right guide rails, and the groove-shaped stop iron is flush with the base of the cross beam;

the connecting plate is a T-shaped plate and is arranged on the upper end surfaces of the groove-shaped stop iron and the beam base; one side of the connecting plate is fixed on the guide rail through a screw and a groove-shaped stop iron, the other side of the connecting plate is screwed and fixed with the beam base through a bolt, and the left and right guide rail supporting frames are installed on the guide rail;

and an adjusting gasket for adjusting the gap is arranged in the groove of the groove-shaped iron stop, and the adjusting gasket is fixed on the guide rail by screwing two M16 jackscrews arranged below the groove-shaped iron stop.

The appropriate height of the limiting block b is the stacking height of the groove-shaped stop block and the connecting plate, the height of the groove-shaped stop block is 162mm, and the thickness of the connecting plate is 20 mm.

The roller changing vehicle intermediate roller limiting block is applied to the roller changing steps after the roller changing vehicle as follows:

1) when the used old intermediate roll and the working roll are extracted from the frame to the roll changing vehicle, the old single upper intermediate roll is hoisted away;

2) then vertically lifting the old working rolls in pairs, and placing the cushion blocks between the bearing seats of the upper working roll and the lower working roll at the moment;

3) moving the roller changing vehicle for 1-3 layers, and lifting the old single lower middle roller;

4) when the new roller is replaced, a pair of prepared working rollers are hoisted in pairs before entering the roller replacing vehicle, and a cushion block is placed between an upper working roller and a lower working roller during hoisting for preventing the upper working roller and the lower working roller from contacting; at the moment, a pair of working rollers can be vertically hoisted to the working roller track of the roller changing vehicle at one time;

5) after the working roller is put in place on the track of the roller changing vehicle, the cushion block is taken out;

6) preparing an upper intermediate roller, hoisting a single upper intermediate roller above the roller changing car, and dropping the upper intermediate roller onto a guide rail of the upper intermediate roller of the roller changing car;

7) transversely moving 1-3 layers of the roller changing vehicle, preparing a lower middle roller, and dropping the lower middle roller onto a guide rail of the lower middle roller of the roller changing vehicle;

8) and (3) reversely and transversely moving and returning the roller changing vehicle for 1-3 layers, wherein a pair of working rollers and a pair of middle rollers are prepared on the roller changing vehicle.

The utility model has the advantages that: the utility model discloses a new stopper b of last intermediate roll, stopper a of former intermediate roll hinders at the front surface of intermediate roll box, demolishs the back, because the rear portion does not install the guide rail, and its width is far greater than the width of working roll operation arm. The utility model discloses former roll changing car structural feature of make full use of, it is little to change, and the cost of making new dog is with low costs, and it is fast to take effect. The working roll is hoisted in place in one step, operators do not need to ascend, and the operators can command the crown block on the ground, so that potential safety hazards are eliminated. The utility model discloses its purpose reaches safe, swift roll hoist and mount, and the operation workman needn't climb on the roll changing car and climb down, eliminates the potential safety hazard of existence to realize this safety of matter.

Drawings

FIG. 1 is a schematic view of a situation that an upper middle roller is parked at the rear part of a roller replacing vehicle before a limiting block a is not improved;

FIG. 2 is a schematic diagram of the front of an operation arm blocked on an upper middle roller after the position of an improved limiting block b is changed;

FIG. 3 is a schematic view of a connecting part of a groove-shaped stop iron and a connecting plate in a limiting block b;

FIG. 4 is a schematic illustration of a coupling plate assembly;

fig. 5 is a plan view of a layout of the upper rolls of the roll changer.

Wherein: 1-a limiting block a, 2-a limiting block b, 3-a connecting plate, 4-groove type stop iron, 5-a guide rail supporting frame, 6-an adjusting gasket, 7-a screw, 8-an upright post and 9-a beam base.

Detailed Description

As shown in fig. 1-5, a roller-changing cart intermediate roller limiting block is provided, the distance between two guide rails of the intermediate roller is 765mm, the distance of the intermediate roller when the guide rails and the limiting block are not installed is 835mm, the length is 1340mm, and the following optimization method design is carried out according to the characteristics of the roller-changing cart structure;

a limiting block a1 is a limiting device on each roller guide rail of the improved roller changing vehicle; the limit block a1 on the upper intermediate roller guide rail is removed;

designing and manufacturing a new limit block b2, installing a new limit block b2 by utilizing a beam at the upper rear part of the roller changing trolley, or welding a limit block b2 at the rear part of the roller changing trolley for limiting the upper middle roller;

after the height of the limiting block b2 is increased properly, the limiting block b2 is blocked right in front of the middle roller operating arm, and the position of the limiting block b2 on the middle roller track after optimized design is changed, but the function is unchanged;

fourthly, manufacturing a simple cross hook, and welding M16 nuts in the centers of the two sides of the cushion blocks of the working roll respectively; when the working roller falls into the rail of the roller changing vehicle, one end of the hook is screwed into the nut on the cushion block, and the cushion block is extracted;

when the working roller of the lower machine is hoisted, the inserting frame is firstly inserted into the steel pipe screw holes at two sides of the cushion block without repeatedly jumping into the roller changing vehicle to extract or install the cushion block;

the limiting block b2 comprises a connecting plate 3, an adjusting gasket 6, a left guide rail support frame 5, a right guide rail support frame 5, a groove-shaped blocking iron 4 and a screw 7;

the groove-shaped stop iron 4 is clamped on the upright posts 8 of the left and right guide rails, and the groove-shaped stop iron 4 is flush with the beam base 9;

the connecting plate 3 is a T-shaped plate and is arranged on the upper end surfaces of the groove-shaped stop iron 4 and the beam base 9; one side of the connecting plate 3 is fixed on the guide rail through a screw 7 and a groove-shaped stop iron 4, the other side of the connecting plate is screwed and fixed with a beam base 9 through a bolt, and a left guide rail support frame 5 and a right guide rail support frame 5 are installed on the guide rail;

and an adjusting gasket for adjusting the gap is arranged in the groove of the groove-shaped stop iron 4, and the adjusting gasket 6 is fixed on the guide rail by screwing two M16 jackscrews arranged below the groove-shaped stop iron 4.

The cross hook is made of phi 16 steel bars, M16 multiplied by 50 threads are sleeved at the front end of the hook, the hook is 1300mm long, and the rear cross handle is 300mm wide.

The inserting frame is made of a steel pipe, a phi 18 multiplied by 50 cylindrical pin is welded at the front end of the inserting frame, and the center distance is 510 mm.

A roller changing vehicle intermediate roller limiting block realizes a safe and rapid standby roller hoisting method on a roller changing vehicle, and the optimized roller changing steps are as follows according to the preferred scheme:

The key point of the utility model

(1) After the position of the limiting block of the upper middle roller is changed, the limiting function of the limiting block is unchanged. The width in the middle roll track is 765mm and the width of the upper work roll bearing housing operating arm is 740mm, resulting in a spacing of 25 mm.

The width of the stop iron of the operating arm of the working roll is 780mm at the maximum, but the stop iron is positioned at the position where the guide rail is not arranged on the upper middle roll, the width of the stop iron is 835mm, and the spacing is 55 mm. The pair of working rolls can accurately and vertically fall on the track after being hoisted to the proper position above the roll changing car, and the working rolls can be reached without moving forwards and backwards in the transverse direction, descending and waiting to avoid the limiting blocks of the middle rolls; the hoisting steps are simplified, and one-step in-place is realized. The hoisting process is simpler than that before improvement, the time consumption is shorter, manpower is not needed, and the limit block of the middle roller can reach the aim.

(2) The newly designed limiting block b is simple in structure and convenient to adjust. A cross beam at the rear part of the roll changing vehicle is utilized to install a limiting block connecting plate on a cross beam base and is screwed up by bolts.

(3) If a limit block which is newly designed is permanently fixed on the roller changing trolley, the groove limit block can be welded on the guide rail.

(4) The simple cushion extraction tool and the inserting frame wrench are simple and practical. After the cushion block is extracted by the tool, an operator does not need to repeatedly jump into the roller changing to take out the cushion block or install the cushion block, so that the essential safety is realized, and the personal safety hidden danger is eliminated.

(5) The roller changing vehicle is designed by German Simmark company, but the roller changing vehicle is not worried out blindly, and is designed by improvement according to actual production conditions. After the position of the middle roller cushion block is changed, the safe and fast hoisting of the working roller is realized, the operation efficiency is improved, the labor intensity of operators is reduced, and the device is worthy of popularization.

Claims

1. The utility model provides a roller changing car intermediate roll stopper which characterized in that: the distance between the two guide rails of the middle roller is 765mm, the distance of the middle roller when the guide rails and the limiting blocks are not installed is 835mm, and the length of the middle roller is 1340 mm; the limiting block a is a limiting device on each roller guide rail of the improved front roller changing vehicle; the limiting block b is newly designed, and a new limiting block b is installed on a cross beam at the upper rear part of the roll changing trolley or welded at the rear part of the roll changing trolley.

2. The roll changing cart intermediate roll limiting block of claim 1, characterized in that: the limiting block b comprises a connecting plate, an adjusting gasket, a left guide rail support frame, a right guide rail support frame, a groove-shaped blocking iron and a screw;

3. The roll changing cart intermediate roll limiting block of claim 1, characterized in that: the appropriate height of the limiting block b is the stacking height of the groove-shaped stop block and the connecting plate, the height of the groove-shaped stop block is 162mm, and the thickness of the connecting plate is 20 mm.