Hoisting tool for replacing rolling mill roll system

Abstract

The utility model relates to the technical field of rolling mill roll replacement, and discloses a hoisting tool for replacing a rolling mill roll system, which comprises a fixed block, a lug seat is fixedly mounted on the outer side of the fixed block, a reinforcing rib and a hoisting cross rod are welded and mounted on one surface, far away from the lug seat, of the fixed block, and a groove is formed in one end, far away from the fixed block, of the hoisting cross rod. The hoisting tool for replacing the rolling mill roll system is provided with the fixed block, the hoisting cross rod, the fixed roll hoisting seat, the movable roll hoisting seat, the movable tool hoisting seat and the chain block, the whole tool mainly utilizes the lever principle to hoist a roll body, and meanwhile, the distance between the fixed roll hoisting seat and the movable roll hoisting seat can be adjusted; the lifting of the roller bodies with different lengths is met, the balancing weight and the fixing block are also installed in an inserted mode through the inserting column, lifting of the roller bodies with different weights is met, limitation is small, practicability is high, and mounting and dismounting of the roller bodies in a narrow space can be met.

Description

Technical Field

[0001] This utility model relates to the field of rolling mill roll replacement technology, specifically a hoisting tool for replacing rolling mill roll systems. Background Technology

[0002] A rolling mill is a piece of equipment used to realize the metal rolling process. It generally refers to the equipment that completes the entire process of rolling material production. Rolling mills can be classified according to the number of rolls, such as two-roll, four-roll, six-roll, eight-roll, twelve-roll, and eighteen-roll mills. In the process of producing aluminum plates, the quality of the rolling mill is affected by many factors. Mechanical hardware is the direct factor that determines whether qualified products can be produced. Among them, the roll system is of paramount importance. Since it needs to be in direct contact with the plate, the quality of the rolls directly affects the quality of the plate. Therefore, the roll system needs to be inspected, ground, and replaced regularly.

[0003] However, due to design flaws, the exhaust hoods of existing rolling mills with long service lives are welded to the mill frame and cannot be moved. When changing the roll system, it is impossible to use an overhead crane to lift them directly from above. The space is also relatively small, which poses a great obstacle to equipment maintenance. During the roll system replacement process, it is only possible to slowly lift and move the rolls using manual hoists and other tools, which reduces equipment uptime and production efficiency. Therefore, we propose a hoisting tool for changing the roll system of a rolling mill. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a lifting tool for changing the rolling mill roll system, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted by this utility model is: a hoisting fixture for replacing rolling mill rolls, including a fixed block, an ear seat fixedly installed on the outer side of the fixed block, a reinforcing rib and a hoisting crossbar welded to the side of the fixed block away from the ear seat, a groove formed at the end of the hoisting crossbar away from the fixed block, a connecting plate fixedly installed on the outer side of the end of the hoisting crossbar away from the fixed block, a fixed roll hoisting seat fixedly installed on the outer side of the connecting plate, and a movable roll hoisting seat and a movable fixture hoisting seat provided on the outer side of the end of the hoisting crossbar away from the fixed block. The inner diameter surface of the lifting base is fixedly equipped with sliders. The lower part of the movable roll lifting base and the movable tooling lifting base is provided with locking bolts. The top of the fixed block is fixedly equipped with a plug-in column. The top of the fixed block is connected to a counterweight block through the plug-in column. A tooling lifting strap and a hand chain hoist are provided between the lug and the movable tooling lifting base. Roll lifting straps are fitted on the outer sides of the fixed roll lifting base and the movable roll lifting base. The roll body is lifted by the roll lifting straps below the fixed roll lifting base and the movable roll lifting base. The side of the fixed block is not provided with a forklift slot.

[0006] Preferably, the horizontal center lines of the fixing block, the reinforcing rib, and the hoisting crossbar are located on the same horizontal line, and four identical reinforcing ribs are provided, which are symmetrically distributed about the center line of the hoisting crossbar.

[0007] The above technical solution, through the design of four reinforcing ribs, enhances the connection strength between the hoisting crossbar and the fixed block. At the same time, the fixed block, reinforcing ribs and hoisting crossbar, whose horizontal center lines are on the same horizontal line, can ensure that the center is on the vertical line during hoisting.

[0008] Preferably, the movable roll hoisting seat and the movable tooling hoisting seat have the same structure. Both the movable roll hoisting seat and the movable tooling hoisting seat are locked to the hoisting crossbar by locking bolts. The movable roll hoisting seat and the movable tooling hoisting seat are hollow structures. The slider is adapted to the groove, and the slider and the groove are slidably connected.

[0009] Through the above technical solution, the movable roll hoisting seat and the movable tooling hoisting seat can slide on the hoisting crossbar through the slider and groove, and the positions of the movable roll hoisting seat and the movable tooling hoisting seat can be adjusted. At the same time, the adjusted movable roll hoisting seat and the movable tooling hoisting seat can be locked by locking bolts. By adjusting the position of the movable roll hoisting seat, the distance between the movable roll hoisting seat and the fixed roll hoisting seat can be increased or decreased to meet the hoisting of roll bodies of different lengths.

[0010] Preferably, there are two identical roll hoisting belts, and the roll hoisting belts are symmetrically distributed about the vertical center line of the roll body.

[0011] With the above technical solution, two identical roll lifting belts can lift both ends of the roll body, making it convenient to lift the roll body to the required installation position.

[0012] Preferably, there are two identical tooling slings, one of which is fixedly connected to the lug, and the other is fixedly connected to the movable tooling lifting seat. The hand-operated hoist is hooked to the two tooling slings.

[0013] The above technical solution, through the design of two tooling slings and a hand-operated hoist, can adjust the center of gravity of the entire tooling, ensuring that the entire tooling remains balanced.

[0014] Preferably, there are multiple identical counterweights, and each of the multiple counterweights is plugged into the plug-in post.

[0015] The above technical solution, through the design of the counterweight and the plug-in post, not only facilitates the quick installation of the counterweight, but also limits the position of the counterweight, reducing the difficulty of installation.

[0016] Compared with the prior art, this utility model provides a hoisting fixture for replacing rolling mill rolls, which has the following advantages: The hoisting fixture for replacing rolling mill rolls is equipped with a fixed block, a hoisting crossbar, a fixed roll hoisting seat, a movable roll hoisting seat, a movable fixture hoisting seat, and a hand chain hoist. The entire fixture mainly utilizes the lever principle to hoist the roll body. At the same time, the distance between the fixed roll hoisting seat and the movable roll hoisting seat can be adjusted to meet the hoisting of roll bodies of different lengths. The counterweight block and the fixed block are also connected by plug-in pins to meet the hoisting of roll bodies of different weights. It has fewer limitations, higher practicality, and can meet the installation and disassembly of roll bodies in confined spaces. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the installation structure of the hoisting crossbar of this utility model;

[0020] Figure 4 This is a schematic diagram of the installation structure of the movable roll hoisting base and the movable tooling hoisting base of this utility model;

[0021] Figure 5 This is a schematic diagram of the slider mounting structure of this utility model.

[0022] The components are: 1. Fixed block; 2. Ear seat; 3. Tooling lifting strap; 4. Insert column; 5. Counterweight block; 6. Reinforcing rib; 7. Lifting crossbar; 8. Groove; 9. Connecting plate; 10. Fixed roll lifting seat; 11. Movable roll lifting seat; 12. Movable tooling lifting seat; 13. Roll lifting strap; 14. Roll body; 15. Forklift groove; 16. Hand chain hoist; 17. Sliding block; 18. Locking bolt. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1: As Figure 1-5As shown, this utility model provides a hoisting fixture for replacing rolling mill rolls, including a fixed block 1. A lug 2 is fixedly installed on the outer side of the fixed block 1. A reinforcing rib 6 and a hoisting crossbar 7 are welded to the side of the fixed block 1 away from the lug 2. A groove 8 is provided at the end of the hoisting crossbar 7 away from the fixed block 1. A connecting plate 9 is fixedly installed on the outer side of the end of the hoisting crossbar 7 away from the fixed block 1. A fixed roll hoisting seat 10 is fixedly installed on the outer side of the connecting plate 9. A movable roll hoisting seat 11 and a movable fixture hoisting seat 12 are provided on the outer side of the end of the hoisting crossbar 7 away from the fixed block 1. The inner diameter of the movable roll hoisting seat 11 and the movable fixture hoisting seat 12 is... The fixed blocks 10 and 11 are all fixedly installed with sliders 17. The lower parts of the movable roll hoisting seat 11 and the movable tooling hoisting seat 12 are all provided with locking bolts 18. The top of the fixed block 1 is fixedly installed with a plug-in post 4. The top of the fixed block 1 is connected to a counterweight block 5 through the plug-in post 4. The ear seat 2 and the movable tooling hoisting seat 12 are provided with a tooling hoisting strap 3 and a hand chain hoist 16. The outer sides of the fixed roll hoisting seat 10 and the movable roll hoisting seat 11 are all fitted with roll hoisting straps 13. The roll body 14 is hoisted below the fixed roll hoisting seat 10 and the movable roll hoisting seat 11 through the roll hoisting straps 13. The side of the fixed block 1 is not provided with a forklift slot 15.

[0025] Specifically, the horizontal center lines of the fixing block 1, the reinforcing rib 6, and the lifting crossbar 7 are located on the same horizontal line. Four identical reinforcing ribs 6 are provided, symmetrically distributed about the center line of the lifting crossbar 7. The advantage is that the design of four reinforcing ribs 6 enhances the connection strength between the lifting crossbar 7 and the fixing block 1. Simultaneously, the fact that the horizontal center lines of the fixing block 1, the reinforcing rib 6, and the lifting crossbar 7 are on the same horizontal line ensures that the center line is vertical during lifting.

[0026] Specifically, the movable roll lifting base 11 and the movable tooling lifting base 12 have the same structure. Both the movable roll lifting base 11 and the movable tooling lifting base 12 are locked to the lifting crossbar 7 by locking bolts 18. The movable roll lifting base 11 and the movable tooling lifting base 12 are hollow structures, with slider 17 adapted to groove 8, and slider 17 and groove 8 are slidably connected. The advantage is that the movable roll lifting base 11 and the movable tooling lifting base 12 can slide on the lifting crossbar 7 through slider 17 and groove 8, and their positions can be adjusted. At the same time, the adjusted movable roll lifting base 11 and the movable tooling lifting base 12 can be locked by locking bolts 18. By adjusting the position of the movable roll lifting base 11, the distance between the movable roll lifting base 11 and the fixed roll lifting base 10 can be increased or decreased, which can meet the lifting requirements of roll bodies 14 of different lengths.

[0027] Specifically, two identical roll lifting belts 13 are provided, and the roll lifting belts 13 are symmetrically distributed about the vertical center line of the roll body 14. The advantage is that the two identical roll lifting belts 13 can lift both ends of the roll body 14, making it convenient to lift the roll body 14 to the required installation position.

[0028] Example 2: Figure 2-5 As shown, this is an improvement on the previous embodiment.

[0029] Specifically, the tooling lifting sling 3 has two identical slings. One tooling lifting sling 3 is fixedly connected to the lug 2, and the other tooling lifting sling 3 is fixedly connected to the movable tooling lifting base 12. The hand chain hoist 16 is hooked to both tooling lifting slings 3. The advantage is that the design of the two tooling lifting slings 3 and the hand chain hoist 16 can adjust the center of gravity of the entire tooling, ensuring that the entire tooling remains balanced.

[0030] Specifically, multiple identical counterweights 5 are provided, and each counterweight 5 is connected to the plug-in post 4 by plugging in. The advantage is that the design of the counterweights 5 and the plug-in post 4 facilitates quick and easy installation of the counterweights 5, and also limits the movement of the counterweights 5, reducing the difficulty of installation.

[0031] Working principle: In use, the operator first adjusts the number of counterweights 5 according to the weight of the roll body 14. After the number of counterweights 5 is determined and they are installed with the fixed block 1, a forklift is used to transport the fixture to the required location. Then, an overhead crane is used to lift the fixture. The positions of the movable roll lifting seat 11 and the movable fixture lifting seat 12 are adjusted. After adjustment, the movable roll lifting seat 11 and the movable fixture lifting seat 12 can be locked with locking bolts 18. Then, two roll lifting belts 13 are used to lift the roll body 14. After the roll lifting belts 13 are installed with the roll body 14, the balance of the entire fixture is adjusted in time using a hand chain hoist 16. After the overall balance is maintained, the overhead crane and the fixture are used to transport the roll body 14 to the required location. After the roll body 14 is installed, the balance of the fixture is adjusted in time, and the fixture is then lifted and moved away.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hoisting fixture for changing the rolling mill roll system, comprising a fixing block (1), characterized in that: An ear seat (2) is fixedly installed on the outer side of the fixed block (1). A reinforcing rib (6) and a lifting crossbar (7) are welded and installed on the side of the fixed block (1) away from the ear seat (2). A groove (8) is provided at the end of the lifting crossbar (7) away from the fixed block (1). A connecting plate (9) is fixedly installed on the outer side of the end of the lifting crossbar (7) away from the fixed block (1). A fixed roll lifting seat (10) is fixedly installed on the outer side of the connecting plate (9). A movable roll lifting seat (11) and a movable tooling lifting seat (12) are provided on the outer side of the end of the lifting crossbar (7) away from the fixed block (1). A slider (17) is fixedly installed on the inner diameter surface of both the movable roll lifting seat (11) and the movable tooling lifting seat (12). Locking bolts (18) are provided at the bottom of both the roll hoisting seat (11) and the movable tooling hoisting seat (12). A plug-in column (4) is fixedly installed at the top of the fixed block (1). A counterweight block (5) is plugged into the top of the fixed block (1) through the plug-in column (4). A tooling hoisting strap (3) and a hand chain hoist (16) are provided between the ear seat (2) and the movable tooling hoisting seat (12). Roll hoisting straps (13) are fitted on the outer sides of both the fixed roll hoisting seat (10) and the movable roll hoisting seat (11). The roll body (14) is hoisted below the fixed roll hoisting seat (10) and the movable roll hoisting seat (11) through the roll hoisting straps (13). A forklift slot (15) is not provided on the side of the fixed block (1).

2. The hoisting fixture for changing rolling mill roll systems according to claim 1, characterized in that: The horizontal center lines of the fixed block (1), the reinforcing rib (6) and the hoisting crossbar (7) are located on the same horizontal line. There are four identical reinforcing ribs (6), and the four reinforcing ribs (6) are symmetrically distributed about the center line of the hoisting crossbar (7).

3. The hoisting fixture for changing rolling mill roll systems according to claim 1, characterized in that: The movable roll hoisting seat (11) and the movable tooling hoisting seat (12) have the same structure. Both the movable roll hoisting seat (11) and the movable tooling hoisting seat (12) are locked to the hoisting crossbar (7) by locking bolts (18). The movable roll hoisting seat (11) and the movable tooling hoisting seat (12) are hollow structures. The slider (17) is adapted to the groove (8), and the slider (17) and the groove (8) are slidably connected.

4. The hoisting fixture for changing rolling mill roll systems according to claim 1, characterized in that: Two identical roll hoisting belts (13) are provided, and the roll hoisting belts (13) are symmetrically distributed about the vertical center line of the roll body (14).

5. The hoisting fixture for changing rolling mill roll systems according to claim 1, characterized in that: The tooling sling (3) is provided in two identical parts. One tooling sling (3) is fixedly connected to the ear seat (2), and the other tooling sling (3) is fixedly connected to the movable tooling lifting seat (12). The hand chain hoist (16) is hooked to the two tooling slings (3).

6. The hoisting fixture for changing rolling mill roll systems according to claim 1, characterized in that: The counterweight (5) is provided in multiple identical manner, and all of the counterweights (5) are connected to the plug-in post (4) by plug-in connection.

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