Roll changing device for large-diameter turning roll of continuous annealing furnace

Abstract

The utility model relates to the field of steel rolling mechanical equipment, and discloses a roll changing device for a large-diameter turning roll of a continuous annealing furnace. The roll changing trolley is hoisted to the guide rail through a factory crane and driven to move on the guide rail, so that the roll changing trolley arm is located under the steering roll, and the trolley is locked on the guide rail. And the lifting mechanism is driven to jack up the roller changing trolley arm, the furnace roller bearing seat slides, the turning roller is supported by the furnace roller bearing seat located on the upper portion of the roller changing trolley arm from an external lifting belt overhanging support, and the external lifting belt is detached. And the steering roller is moved to the connecting module of the I-shaped lifting appliance, and the steering roller is connected with the connecting module. And the steering roller is lifted to a specified bottom surface by the I-shaped lifting appliance. The roll changing operation of the large-diameter turning roll of the continuous annealing furnace is completed based on the structure and the operation steps; compared with the prior art in which a trolley and a steering roller are hoisted together, the roller replacing device has the advantages that the structure is simplified, the hoisting weight of a travelling crane is reduced, and the utilization rate of the travelling crane is improved.

Description

Technical Field

[0001] The utility model relates to the field of steel rolling machinery and equipment, in particular to a large-diameter turning roll changing device for a continuous annealing furnace. Background Art

[0002] The large-diameter steering rollers of the continuous annealing furnace are heavy, especially in the compactly arranged furnace sections such as the hot tensioning roller room. There are operation platforms for inspection and maintenance on both sides, and the operating space is small. It is a blind spot for crane lifting, and the crane cannot be used directly for roller changing operations. At present, the common roller changing device generally adopts the form of a slide rail trolley. This device uses the crane hook as an auxiliary support point when performing roller changing operations. After the steering roller is dragged out, the counterweight is adjusted, and then the roller is lifted to the ground together with the trolley. It has relatively high requirements for the crane lifting capacity, and the crane cannot perform other lifting operations when performing roller changing operations. Utility Model Content

[0003] In view of the above-mentioned defects in the prior art, a large-diameter steering roll changing device for a continuous annealing furnace is provided, which simplifies the device structure, reduces the lifting weight of the crane, and improves the utilization rate of the crane.

[0004] The technical solution adopted by the utility model to solve the above technical problems is:

[0005] A large diameter turning roll changing device for a continuous annealing furnace is characterized by:

[0006] The roller changing trolley has a guide rail matching the trolley on the external operating platform, and the roller changing trolley is placed on the guide rail;

[0007] Lifting mechanism and roll-changing trolley arm. The roll-changing trolley arm is arranged horizontally. The lifting mechanism is located between the roll-changing trolley and the roll-changing trolley arm. The height of the roll-changing trolley arm is adjusted by the lifting mechanism.

[0008] The furnace roller bearing seat adopts an arc structure that matches the shape of the steering roller, and the furnace roller bearing seat is slidably arranged on the roller changing trolley;

[0009] I-type sling, which is connected to the factory crane, is equipped with a detachable connection module, which consists of load-bearing columns and locking end covers of various sizes; the load-bearing column passes through the through hole in the middle of the steering roller, and is fixed to the outer end of the load-bearing column by a locking end cover whose size is larger than the through hole.

[0010] According to the above technical solution, the length of the roller changing trolley arm is increased, and a cantilever section is added to the roller changing trolley arm on the basis of the original section, and the structure of the cantilever section is the same as that of the original section.

[0011] According to the above technical solution, the roller changing trolley includes a chassis and wheels located at the bottom of the chassis, and a wheel locking mechanism is provided between the wheels and the guide rails.

[0012] According to the above technical scheme, the lifting mechanism includes a bracket, a cylinder and a slider. The bracket is composed of two support rods hinged in the middle to form a scissor structure. According to the position of the roller changing trolley arm, a group of brackets are arranged on both sides of the top of the chassis, and the middle hinge of the two groups of brackets are connected by a connecting rod; a group of parallel slide rails are arranged at the roller changing trolley arm and the chassis position below the roller changing trolley arm, and the slider can only be connected to the slide rails by linear sliding; the front ends of the two groups of brackets are hinged on the chassis, and the rear ends are hinged on four sliders; one end of the cylinder is hinged on the chassis, and the other end is hinged on the connecting rod.

[0013] According to the above technical solution, the oil cylinder is driven by a manual pump.

[0014] According to the above technical solution, the I-type sling also includes a sling body and a counterweight block. The counterweight block and the connecting module are located at both ends of the sling body, and the counterweight block is adjusted according to the overall weight of the connecting module and the steering roller.

[0015] According to the above technical scheme, two sets of rolling bearing groups arranged in parallel are provided on the arm of the roll changing trolley along the length direction. Each set of rolling pulley groups is composed of a number of rolling pulleys arranged at intervals. The rolling bearings are fixed on the trolley cantilever bracket through bearing supports, and the furnace roller bearing seat is placed on the rolling bearings.

[0016] According to the above technical solution, the furnace roller bearing seat includes a bottom plate and a rubber protection plate, and the rubber protection plate is located on the upper part of the bottom plate.

[0017] The utility model has the following beneficial effects:

[0018] 1. First, the factory crane is used to hoist the roll-changing trolley onto the guide rail, and the roll-changing trolley is driven to move on the guide rail so that the roll-changing trolley arm is located directly below the steering roller, and the trolley is locked on the guide rail. Secondly, the lifting mechanism is driven to lift the roll-changing trolley arm, and the furnace roller bearing seat is slid on the roll-changing trolley arm, and the steering roller is converted from being cantilevered by the external lifting belt to being supported by the furnace roller bearing seat located on the upper part of the roll-changing trolley arm, and the external lifting belt is removed. Subsequently, the furnace roller bearing seat and the roll-changing trolley are moved, and the steering roller is moved to the connection module of the I-type hoist, and the steering roller is connected to the connection module. Finally, the steering roller is hoisted from the roll-changing trolley to the designated bottom surface by the I-type hoist. During the installation operation, the above disassembly process is reversed. Based on the above structure and operation steps, the roller changing operation of the large diameter steering roller of the continuous annealing furnace is completed; compared with the prior art in which the trolley and the steering roller are hoisted together, the structure of the roller changing device is simplified, the lifting weight of the crane is reduced, and the utilization rate of the crane is improved.

[0019] 2. A cantilever section is added to the roller-changing trolley arm on the basis of the original section. The structure of the cantilever section is the same as that of the original section. By adding the cantilever section, the steering roller can be replaced in areas with narrow space.

[0020] 3. A wheel locking mechanism is provided between the wheel and the guide rail; when performing the steering roller hoisting operation, the wheel and the guide rail are connected together through the wheel locking mechanism to prevent tipping during the roller changing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model provides an embodiment;

[0022] Figure 2 The utility model provides an embodiment;

[0023] Figure 3 The utility model provides an embodiment;

[0024] Figure 4 The utility model provides an embodiment;

[0025] In the figure, 1. roller changing trolley; 1-1. chassis; 1-2. wheels; 2. guide rails; 1-3. wheel locking mechanism; 3. lifting mechanism; 3-1. bracket; 3-2. cylinder; 3-3. slider; 4. roller changing trolley arm; 4-1. original section; 4-2. cantilever section; 5. furnace roller bearing seat; 6. I-type hanger; 6-1. connection module; 6-2. hanger body; 6-3. counterweight; 7. rolling bearing; 8. steering roller. DETAILED DESCRIPTION

[0026] The utility model is described in detail below with reference to the accompanying drawings and embodiments.

[0027] Reference Figure 1 to Figure 4 As shown, the utility model provides a large-diameter steering roller changing device for a continuous annealing furnace.

[0028] Example 1

[0029] include

[0030] The roller changing trolley 1 has a guide rail 2 matching the trolley on the external operating platform, and the roller changing trolley is placed on the guide rail;

[0031] The lifting mechanism 3 and the roll-changing trolley arm 4, the roll-changing trolley arm is arranged horizontally, the lifting mechanism is located between the roll-changing trolley and the roll-changing trolley arm, and the height of the roll-changing trolley arm is adjusted by the lifting mechanism;

[0032] The furnace roller bearing seat 5 adopts an arc structure matching the shape of the steering roller 8, and the furnace roller bearing seat is slidably arranged on the roller changing trolley;

[0033] I-type sling 6, the I-type sling is connected to the factory crane, and a detachable connection module 6-1 is arranged inside the I-type sling, and the connection module is composed of load-bearing columns and locking end covers of various sizes; the load-bearing column rotates through the through hole in the middle of the steering roller, and is fixed to the outer end of the load-bearing column by a locking end cover whose size is larger than the through hole.

[0034] In this embodiment, the roll-changing trolley is first hoisted onto the guide rail by the factory crane, and the roll-changing trolley is driven to move on the guide rail so that the roll-changing trolley arm is located directly below the steering roller, and the trolley is locked on the guide rail. Secondly, the lifting mechanism is driven to lift the roll-changing trolley arm, and the furnace roller bearing seat is slid on the roll-changing trolley arm, and the steering roller is converted from being cantilevered by the external lifting belt to being supported by the furnace roller bearing seat located on the upper part of the roll-changing trolley arm, and the external lifting belt is removed. Subsequently, the furnace roller bearing seat and the roll-changing trolley are moved, and the steering roller is moved to the connection module of the I-type sling, and the steering roller is connected to the connection module. Finally, the steering roller is hoisted from the roll-changing trolley to the designated bottom surface by the I-type sling. During the installation operation, the above-mentioned disassembly process is reversed. Based on the above structure and operation steps, the roller changing operation of the large diameter steering roller of the continuous annealing furnace is completed; compared with the prior art in which the trolley and the steering roller are hoisted together, the structure of the roller changing device is simplified, the lifting weight of the crane is reduced, and the utilization rate of the crane is improved.

[0035] Example 2

[0036] The structure and principle of Example 2 are similar to those of Example 1, except that: for some scenes where the space near the steering roller is small and the roller-changing trolley cannot get too close to the area around the steering roller; the length of the roller-changing trolley arm is increased, and a cantilever section 4-2 is added to the original section 4-1, and the structure of the cantilever section is the same as that of the original section. In this embodiment, the cantilever section is added to meet the requirements of replacing the steering roller in a narrow space area.

[0037] Example 3

[0038] The structure and principle of the embodiment 3 are similar to those of the embodiment 1, except that the roller changing trolley includes a chassis 1-1 and wheels 1-2 located at the bottom of the chassis, and a wheel locking mechanism 1-3 is provided between the wheels and the guide rails. When performing the steering roller hoisting operation, the wheels and the guide rails are connected together by the wheel locking mechanism to prevent tipping during the roller changing process.

[0039] Example 4

[0040] The structure and principle of Example 4 are similar to those of Example 1, except that a preferred structural form of the lifting mechanism is provided.

[0041] Specifically, the lifting mechanism includes a bracket 3-1, a cylinder 3-2 and a slider 3-3. The bracket is composed of two support rods hinged in the middle to form a scissor structure. According to the position of the roller-changing trolley arm, a group of brackets are arranged on both sides of the top of the chassis, and the middle hinges of the two groups of brackets are connected by a connecting rod; a group of parallel slide rails are arranged at the roller-changing trolley arm and the chassis position below the roller-changing trolley arm, and the slider can only be linearly slidably connected to the slide rails; the front ends of the two groups of brackets are hinged on the chassis, and the rear ends are hinged on four sliders; one end of the cylinder is hinged on the chassis, and the other end is hinged on the connecting rod.

[0042] In this embodiment, the distance between the chassis and the roll-changing trolley arm is controlled by controlling the length of the oil cylinder and using the scissor-type bracket between the two. The oil cylinder pushes the bracket to slide on the slider to realize the lifting operation of the device, which can meet the disassembly requirements of furnace rollers of different heights.

[0043] In embodiment 4, the oil cylinder is driven by a manual pump.

[0044] In embodiments 1-4, the I-type sling further includes a sling body 6-2 and a counterweight 6-3, the counterweight and the connection module are located at both ends of the sling body, and the counterweight is adjusted according to the overall weight of the connection module and the steering roller.

[0045] Example 5

[0046] The structure and principle of Example 5 are similar to those of Example 1, except that a preferred sliding form of the furnace roller bearing seat on the roller changing trolley arm is provided.

[0047] Two sets of rolling bearing groups arranged in parallel are provided on the arm of the roll changing trolley along the length direction. Each set of rolling pulley groups is composed of a number of rolling pulleys 7 arranged at intervals. The rolling bearings are fixed on the cantilever bracket of the trolley through bearing supports. The furnace roller bearing seat is placed on the rolling bearings, and the rolling bearings support the furnace roller bearing seat and provide rolling friction for the sliding of the furnace roller bearing seat.

[0048] In Examples 1-5, the furnace roller bearing seat includes a bottom plate and a rubber protection plate. The rubber protection plate is located at the upper part of the bottom plate. The rubber furnace roller bearing seat is provided to protect the furnace roller from being scratched by the outer ring of the bearing during the dragging process.

[0049] The roller changing process of the utility model is as follows:

[0050] 1) Remove the roller cover, bearing seat and other furnace roller accessories on the operating side of the hot tensioning roller room of the continuous annealing furnace, and use the lifting belt to temporarily support the furnace roller.

[0051] 2) Use the factory crane to lift the roller changing trolley from the ground to the guide rail reserved on the platform operating side structure.

[0052] 3) Push the roll changing trolley into the specified position (make sure the furnace roller is located directly above the roll changing trolley arm), and operate the wheel locking mechanism to lock the wheels.

[0053] 4) Push in the furnace roller bearing seat, operate the manual pump to make the furnace roller sit on the furnace roller bearing seat, disconnect the lifting belt used for temporary support, and manually drag the furnace roller together with the furnace roller bearing seat out of the furnace.

[0054] 5) Connect the I-type lifting device, adjust the counterweight, and use the crane to lift the furnace roller from the platform to the designated position on the ground.

[0055] During installation, the above disassembly process is reversed.

[0056] The above are only preferred embodiments of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of patent application of the present invention still fall within the protection scope of the present invention.

Claims

1. A large diameter turning roll changing device for a continuous annealing furnace, characterized in that: include The roller changing trolley has a guide rail matching the trolley on the external operating platform, and the roller changing trolley is placed on the guide rail; Lifting mechanism and roll-changing trolley arm. The roll-changing trolley arm is arranged horizontally. The lifting mechanism is located between the roll-changing trolley and the roll-changing trolley arm. The height of the roll-changing trolley arm is adjusted by the lifting mechanism. The furnace roller bearing seat adopts an arc structure that matches the shape of the steering roller, and the furnace roller bearing seat is slidably arranged on the roller changing trolley; I-type sling, a detachable connection module is provided inside the I-type sling, and the connection module is composed of load-bearing columns and locking end covers of various sizes; the load-bearing column rotates through the through hole in the middle of the steering roller, and is fixed to the outer end of the load-bearing column by a locking end cover whose size is larger than the through hole.

2. The large diameter turning roll changing device for a continuous annealing furnace according to claim 1, characterized in that: The length of the roller changing trolley arm is increased, and a cantilever section is added to the roller changing trolley arm on the basis of the original section, and the structure of the cantilever section is the same as that of the original section.

3. The large diameter turning roll changing device for a continuous annealing furnace according to claim 1 is characterized in that: The roller changing trolley comprises a chassis and wheels located at the bottom of the chassis, and a wheel locking mechanism is provided between the wheels and the guide rails.

4. The large diameter turning roll changing device for a continuous annealing furnace according to claim 1, characterized in that: The lifting mechanism includes a bracket, a cylinder and a slider. The bracket is composed of two support rods hinged in the middle to form a scissor structure. According to the position of the roller-changing trolley arm, a group of brackets are arranged on both sides of the top of the chassis, and the middle hinges of the two groups of brackets are connected by a connecting rod; a group of parallel slide rails are arranged at the roller-changing trolley arm and the chassis position below the roller-changing trolley arm, and the slider can only be connected to the slide rails by linear sliding; the front ends of the two groups of brackets are hinged on the chassis, and the rear ends are hinged on four sliders; one end of the cylinder is hinged on the chassis, and the other end is hinged on the connecting rod.

5. The large diameter turning roll changing device for a continuous annealing furnace according to claim 4 is characterized in that: The oil cylinder is driven by a manual pump.

6. The large diameter turning roll changing device for continuous annealing furnace according to claim 1, characterized in that: The I-type spreader also includes a spreader body and a counterweight. The counterweight and the connecting module are located at both ends of the spreader body. The counterweight is adjusted according to the overall weight of the connecting module and the steering roller.

7. The large diameter turning roll changing device for a continuous annealing furnace according to claim 1, characterized in that: Two sets of rolling bearing groups arranged in parallel are provided on the roll changing trolley arm along the length direction. Each set of rolling pulley groups is composed of a number of rolling pulleys arranged at intervals. The rolling bearings are fixed on the trolley cantilever bracket through bearing supports, and the furnace roller bearing seat is placed on the rolling bearings.

8. The large diameter turning roll changing device for a continuous annealing furnace according to claim 1, characterized in that: The furnace roller bearing seat comprises a bottom plate and a rubber protection plate, wherein the rubber protection plate is located on the upper part of the bottom plate.

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