A steel strip coil uncoiling braking auxiliary device

Abstract

The utility model discloses a kind of steel strip coil uncoiling brake auxiliary devices, including base, brake support, bolt, several supports are installed on base, two parallel rollers are rotatably connected to support, brake support is installed to base, brake support rotatably installs mounting seat, mounting seat is fixedly connected with brake block, bolt is screwed with mounting seat, positioning nut is screwed on bolt, positioning nut is resisted in mounting seat surface, pushing ring is screwed on bolt, butterfly spring of top column pushing ring is sleeved in the lower end of bolt, butterfly spring is located in the recess inside brake support;By butterfly spring, pushing ring and bolt drive mounting seat rotation, brake block on mounting seat is tightly pressed roller, brake force is exerted to roller, the active fixation of roller is realized, solve the problem that steel strip coil skids, loose caused by roller free rotation, ensure that steel strip coil always keeps compact state during uncoiling process, significantly improve unloading stability.

Description

Technical Field

[0001] This utility model relates to the field of steel strip coil loading and unloading technology, specifically a steel strip coil unloading braking auxiliary device. Background Technology

[0002] When the strip steel is almost rolled out, the unloading trolley rises to bring the unloading carriage into contact with the steel strip coil, allowing it to receive the coil. The unloading trolley's idler rollers contact the steel strip coil, and the unloading trolley uses the coil's own weight to trigger a braking action: a base is added between the idler roller seat and the lifting carriage, with brake blocks connected to the base. The brake blocks are positioned on both sides by guide rods and fitted with disc springs. When the steel strip coil is placed on the idler roller, its own weight is transferred to the base through the idler roller, compressing the disc springs and causing them to deform. This causes the brake blocks to move upwards and contact the idler roller surface, achieving braking through friction. When the steel strip coil is removed, the disc springs return to their original position, the brake blocks separate from the idler roller, and the idler roller resumes free rotation.

[0003] However, such a solution has the following drawbacks: the idler rollers rotate freely without restraint due to the lack of braking. When the steel strip coil is unloaded (such as when the unloading trolley moves, the steel coil shifts due to its own weight, or a slight external impact), the idler rollers are prone to rotate freely due to inertia or the imbalance of friction between the steel strip coil and the idler rollers, which disrupts the original tension balance of the steel strip coils. The steel strip coils are usually multi-layered winding structures that rely on internal tension to maintain tightness. When the idler rollers are not braked, the relative sliding between the steel strip coils and the idler rollers will cause a sudden decrease in local tension, and the outer layer of the coil material is prone to loosening and shifting, forming a "running outer circle" situation, which affects the unloading of the steel strip coils. Utility Model Content

[0004] The purpose of this utility model is to provide a steel strip coil unwinding braking auxiliary device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a steel strip coil unwinding braking auxiliary device, comprising a base, on which a plurality of supports are mounted, and the supports are rotatably connected to two parallel idlers. A brake bracket is mounted on a base, and a mounting seat is rotatably mounted on the brake bracket. A brake block is fixedly connected to the mounting seat, and the brake block restricts the rotation of the idler roller. A bolt is screwed to a mounting base. A positioning nut is screwed onto the bolt, which rests against the surface of the mounting base. A push ring is screwed onto the bolt. A disc spring with a push ring is sleeved on the lower end of the bolt. The disc spring is located inside the groove of the brake bracket. The disc spring pushes the brake block to press against the idler roller and restricts the rotation of the idler roller. Tightening the bolt compresses and releases the disc spring, changing the braking force of the brake block on the idler roller. The braking force of the brake block on the idler roller can be flexibly adjusted. It can use the elasticity of the disc spring to make the brake block stably hold the idler roller to achieve braking, preventing the steel strip coil from rotating excessively due to inertia during unwinding. The braking force can also be easily changed by turning the bolt to adapt to the unwinding requirements of different steel strip coils, ensuring the controllability and safety of the unwinding process.

[0006] Furthermore, the idler roller surface is fitted with several anti-wear sleeves. The anti-wear sleeves on the idler roller surface can reduce the direct friction between the idler roller and the steel strip coil, reduce the wear rate of the idler roller, extend the service life of the idler roller, and at the same time prevent the idler roller surface from being scratched on the surface of the steel strip coil after wear.

[0007] Furthermore, the idler roller has a roller shaft with a bearing sleeved on it. The bearing is installed inside the bracket to reduce the resistance when the idler roller rotates, making the unwinding process of the steel strip coil smoother, reducing the wear of the anti-wear sleeve, and improving the service life of the anti-wear sleeve.

[0008] Furthermore, an anti-detachment shaft is inserted into the brake bracket. The anti-detachment shaft passes through the mounting base and is movably connected to the mounting base, allowing the mounting base to rotate flexibly. The disc spring pushes the mounting base and brake block to move smoothly, making full use of the elastic force of the disc spring for braking.

[0009] Furthermore, the brake block has a recessed hole, into which a fixing bolt is inserted. The fixing bolt is screwed to the mounting base, ensuring the firmness of the connection between the brake block and the mounting base, and facilitating the disassembly and replacement of the brake block. When the brake block is worn, a new brake block can be quickly replaced, reducing maintenance costs and difficulty.

[0010] Furthermore, the contact surface between the brake block and the idler roller is arranged in an arc shape, and the brake block is attached to the surface of the idler roller, which increases the contact area between the two, makes the braking force distribution more uniform, improves the stability of the braking effect, and avoids insufficient braking force due to too small a contact area.

[0011] Compared with the prior art, the beneficial effects of this utility model are: (1) The mounting base is rotated by pushing the ring and bolts on the upper part of the butterfly spring. The brake block on the mounting base presses against the idler roller and applies braking force to the idler roller, thereby realizing the active fixing of the idler roller and solving the problem of slippage and loosening of the steel strip roll caused by the free rotation of the idler roller. This ensures that the steel strip roll remains in a tight state during the unloading process and significantly improves the unloading stability.

[0012] (2) Compared with braking that relies on the weight of the steel strip coil, the braking method of this solution is not limited by the weight of the steel strip coil. Whether it is a light or heavy steel strip coil, a stable braking force can be provided by the brake block, avoiding the defect of insufficient braking when the idler roller is lightly loaded, and the applicable scenarios are more flexible.

[0013] (3) Tightening the bolts and positioning nuts can change the compression of the disc spring and adjust the braking force of the brake block. For steel strip coils of different weights, the roller shaft can be stably restricted, ensuring the unloading quality of various steel strip coils. Attached Figure Description

[0014] Figure 1 This is a side view of the present invention; Figure 2 This is a first-view sectional view of the present invention; Figure 3 This is a cross-sectional view of the present invention from a second perspective; Figure 4 This is a schematic diagram of the connection between the bolt and the disc spring of this utility model.

[0015] In the diagram: 1. Base; 2. Bracket; 6. Idler roller; 7. Roller shaft; 10. Bearing; 21. Brake bracket; 24. Disc spring; 26. Positioning nut; 27. Bolt; 30. Anti-detachment shaft; 32. Brake block; 33. Mounting seat; 34. Anti-wear sleeve; 35. Push ring; 36. Fixing bolt. Detailed Implementation

[0016] 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.

[0017] Example: Please see Figure 1-4 This utility model provides a technical solution: a steel strip coil unloading braking auxiliary device, including a base 1, on which a plurality of brackets 2 are installed, and the brackets 2 are rotatably connected to two parallel idlers 6. The brackets 2 support the idlers 6 to ensure that the idlers 6 do not contact the base 1. The idlers 6 can rotate. When the steel strip coil is placed on the idlers 6, the two idlers 6 can stably support the steel strip coil. A brake bracket 21 is mounted on a base 1. A mounting seat 33 is rotatably mounted on the brake bracket 21. A brake block 32 is fixedly connected to the mounting seat 33. The brake block 32 restricts the rotation of the idler roller 6. Two mounting seats 33 and two brake blocks 32 are provided to brake two idler rollers 6. Bolt 27 is screwed to mounting base 33. A positioning nut 26 is screwed onto bolt 27. The positioning nut 26 abuts against the surface of mounting base 33. Tightening the positioning nut 26 can fix bolt 27, prevent bolt 27 from rotating freely, and prevent bolt 27 from changing position. A push ring 35 is screwed onto bolt 27. A butterfly spring 24 of the push ring 35 is sleeved on the lower end of bolt 27. The butterfly spring 24 stabilizes the push bolt 27 and mounting base 33 through the push ring 35. The butterfly spring 24 is located inside the groove of the brake bracket 21. The butterfly spring 24 pushes the brake block 32 to press against the idler roller 6 and restrict the rotation of the idler roller 6. Tightening the bolt 27 compresses and releases the butterfly spring 24, changing the braking force of the brake block 32 on the idler roller 6.

[0018] In this embodiment, as Figure 1 As shown, the surface of the idler roller 6 is fitted with several anti-wear sleeves 34. The anti-wear sleeves 34 are made of polyurethane (PU). Polyurethane has strong impact resistance and is suitable for high-load scenarios. While supporting the steel strip coil, it will not wear the steel strip coil.

[0019] In this embodiment, as Figure 3 As shown, the idler roller 6 has a roller shaft 7, and a bearing 10 is sleeved on the roller shaft 7. The bearing 10 is installed inside the bracket 2 and supports the idler roller 6, so as to realize the rotation installation of the idler roller 6. When the idler roller 6 needs to be rotated, it is ensured that the idler roller 6 can rotate smoothly.

[0020] In this embodiment, as Figure 4 As shown, an anti-detachment shaft 30 is inserted into the brake bracket 21. The anti-detachment shaft 30 passes through the mounting base 33 and is movably connected to the mounting base 33. The mounting base 33 can rotate with the anti-detachment shaft 30 as the fulcrum, so that the disc spring 24 stably pushes the mounting base 33 and the brake block 32 to rotate.

[0021] In this embodiment, as Figure 4 As shown, the brake block 32 has a recessed hole, and a fixing bolt 36 is inserted into the recessed hole. The fixing bolt 36 is screwed to the mounting base 33. When the brake block 32 needs to be replaced, the anti-detachment shaft 30, bolt 27, and disc spring 24 can be removed, the mounting base 33 can be removed from the brake bracket 21, and then the fixing bolt 36 can be unscrewed to remove the brake block 32.

[0022] In this embodiment, as Figure 4 As shown, the contact surface between the brake block 32 and the idler roller 6 is arranged in an arc shape. The brake block 32 is attached to the surface of the idler roller 6, and the contact area between the brake block 32 and the idler roller 6 is large, which improves the braking effect.

[0023] Specifically, during use, the base 1 is horizontally fixed to the top of the lifting vehicle body, ensuring that the upper surface of the base 1 is perpendicular to the direction of movement of the lifting vehicle body. The brake bracket 21 is fixed to the base 1 with screws and nuts. The mounting base 33 is connected to the brake bracket 21 through the anti-detachment shaft 30. The brake block 32 is connected to the mounting base 33 through the fixing bolt 36. The disc spring 24 is placed in the brake bracket 21, and the disc spring 24 is sleeved on the lower end of the bolt 27. The bolt 27 is not tightened yet. The idler roller 6 is installed inside the bracket 2 through the roller shaft 7 and the bearing 10. The position of the idler roller 6 is adjusted so that the axis of the idler roller 6 is in the same vertical plane as the top of the brake block 32. Tightening the bolt 27 causes the push ring 35 to compress the disc spring 24, so that the preload of the disc spring 24 = the total weight of the idler roller 6 + the maximum strip rebound force + 5% safety margin. When the steel strip winding is about to be completed, the unwinding trolley lifts up, and the idler roller 6 contacts the steel strip roll on the winding machine. At this time, the steel strip roll is mainly supported by the winding machine drum. The rebound force of the strip acts on the idler roller 6. Because the preload of the disc spring is greater than the rebound force, the idler roller 6 remains stationary, pressing the strip to complete the final winding and avoid loosening. After winding is completed, the winding machine drum shrinks in diameter, the steel strip roll gradually detaches from the drum, and the weight is transferred to the idler roller 6. The disc spring 24 is in a compressed state. The elastic force of the disc spring 24 pushes the top of the brake block 32 to contact the surface of the idler roller 6, and brakes the idler roller 6 through friction, so that the idler roller 6 stops rotating. The unloading trolley moves to the designated position, the lifting vehicle body descends, and the steel strip coil is transferred to the storage rack or conveyor roller conveyor. During the transportation of the steel strip coil, there will be no problems such as slippage, loosening, or running off the outer ring.

[0024] 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 steel strip coil unwinding braking auxiliary device, characterized in that, include: A base (1) is provided, on which several brackets (2) are mounted, and the brackets (2) are rotatably connected to two parallel rollers (6). Brake bracket (21), the brake bracket (21) is mounted on base (1), the brake bracket (21) is rotatably mounted with mounting seat (33), the mounting seat (33) is fixedly connected with brake block (32), the brake block (32) restricts the rotation of idler roller (6); Bolt (27), the bolt (27) is screwed to the mounting base (33), the bolt (27) is screwed with a positioning nut (26), the positioning nut (26) abuts against the surface of the mounting base (33), the bolt (27) is screwed with a push ring (35), the lower end of the bolt (27) is fitted with a butterfly spring (24) of the push ring (35), the butterfly spring (24) is located inside the groove of the brake bracket (21), the butterfly spring (24) pushes the brake block (32) to press against the idler roller (6) and restricts the rotation of the idler roller (6), turning the bolt (27) compresses and releases the butterfly spring (24) and changes the braking force of the brake block (32) on the idler roller (6).

2. The steel strip coil unwinding braking auxiliary device according to claim 1, characterized in that: The surface of the idler roller (6) is fitted with several anti-wear sleeves (34).

3. The steel strip coil unwinding braking auxiliary device according to claim 1, characterized in that: The idler roller (6) has a roller shaft (7), on which a bearing (10) is sleeved, and the bearing (10) is installed inside the bracket (2).

4. The steel strip coil unwinding braking auxiliary device according to claim 1, characterized in that: An anti-detachment shaft (30) is inserted into the brake bracket (21), and the anti-detachment shaft (30) passes through the mounting base (33) and is movably connected to the mounting base (33).

5. The steel strip coil unwinding braking auxiliary device according to claim 1, characterized in that: The brake block (32) has a recessed hole, and a fixing bolt (36) is inserted into the recessed hole. The fixing bolt (36) is screwed to the mounting base (33).

6. The steel strip coil unwinding braking auxiliary device according to claim 1, characterized in that: The contact surface between the brake block (32) and the idler roller (6) is arranged in an arc shape, and the brake block (32) is attached to the surface of the idler roller (6).

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