Auxiliary device for replacing circulating fan at top of heating furnace

Abstract

The utility model belongs to the field of heating furnace maintenance auxiliary equipment, and particularly relates to a heating furnace top circulating fan replacement auxiliary device which comprises a left base and a right base which correspond to each other, walking assemblies are installed at the bottoms of the two bases, and electric push rods are installed at the tops of the two bases. A connecting frame is fixedly connected between the end parts of piston rods of the two electric push rods, two mounting plates are fixedly connected to the connecting frame, bearing seats are mounted on the two mounting plates, a rope shaft is rotationally mounted between the two bearing seats, a rope disc is fixedly connected to the rope shaft, a lifting rope is wound on the rope disc, a lifting hook is fixedly connected to the lifting rope, and the rope shaft is connected with a rotary driving assembly. The auxiliary device for replacing the circulating fan on the top of the heating furnace is simple in structure and convenient to use, the circulating fan can be efficiently and safely transferred to a low position, and convenience is provided for follow-up maintenance and replacement of the circulating fan.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of heating furnace top circulating fan replacement auxiliary devices, belong to heating furnace maintenance auxiliary equipment field. BACKGROUND

[0002] Hot air circulation heating furnace is a very practical heat treatment equipment, with the advantages of uniform temperature, rapid temperature and high degree of automation.Efficient hot air circulation heating furnace is widely used in steel, non-ferrous metals, machinery, automobile and other industries, for metal material heat treatment, tempering annealing and other processes, through continuous circulation heating, so that the object is uniformly heated, so as to achieve the specific heat treatment effect.Circulating fan is an important part of heating furnace, which uniformly distributes hot air to the whole furnace by generating strong airflow, ensuring that the workpiece temperature is balanced during heating process, avoiding the occurrence of hot spots and cold spots.

[0003] In the prior art, when the circulating fan is checked, repaired or replaced, it is usually transported by a crown block.However, due to the long longitudinal length of the heating furnace, sometimes individual circulating fans are located below the crown block track or the furnace body pipeline, at which time the circulating fan cannot be directly lifted by the crown block, and can only be lifted by the crown block using a guide chain in a skew lifting manner, which requires multiple personnel and tacit cooperation during operation, thus posing a great safety hazard and having very low operation efficiency.Therefore, a Chinese utility model patent with the authorization announcement number CN217350425U discloses a heating furnace top circulating fan maintenance and replacement auxiliary device, which avoids the skew lifting operation mode, greatly reduces the operation safety hazard, and greatly improves the operation efficiency.However, the circulating fan inspection and repair are carried out on the transfer trolley, which is not only inconvenient to obtain tools, but also has limited operation space and low operation efficiency;in addition, when the circulating fan needs to be replaced, it needs to be transferred to a suitable position by the transfer trolley, and then still needs to be lifted by the crown block, which is complicated and has low operation efficiency. UTILITY MODEL CONTENTS

[0004] According to the deficiencies in the prior art, the utility model solves the technical problem of providing a heating furnace top circulating fan replacement auxiliary device with high operation efficiency.

[0005] The heating furnace top circulating fan replacement auxiliary device comprises two left and right corresponding bases, a walking assembly is installed at the bottom of each base, an electric push rod is installed at the top of each base, a connecting frame is fixedly connected between the end portions of the piston rods of the two electric push rods, two mounting plates are fixedly connected to the connecting frame, a bearing seat is installed on each mounting plate, a rope shaft is rotatably installed between the two bearing seats, a rope disc is fixedly connected to the rope shaft, a lifting rope is wound around the rope disc, a lifting hook is fixedly connected to the lifting rope, and a rotary driving assembly is connected to the rope shaft.

[0006] Further, the walking assembly comprises wheel seats fixedly connected to the front and rear ends of the base, and wheels are rotatably connected to the wheel seats.

[0007] Further, a reinforcing rib is fixedly connected between the base and the shell of the electric push rod.

[0008] Further, a rib plate is fixedly connected between the connecting frame and the piston rod of the electric push rod.

[0009] Further, the rotating driving assembly is a servo motor, and the main shaft of the servo motor is coupled with the rope shaft.

[0010] Further, the servo motor is installed on the connecting frame.

[0011] Working principle and process:

[0012] In use, the device is pushed to the heating furnace under the action of the wheels, then the connecting frame is raised by the extension action of the two electric push rods, then the device is pushed to the target position with the connecting frame being located on the two sides of the heating furnace, the hook is located above the circulating fan to be replaced, after the mounting bolts of the circulating fan are dismounted, the rope shaft is driven to rotate by the action of the servo motor, so that the rope reel is driven to rotate to pay out the rope, so that the hook moves downward, then the hook is hooked on the lifting lug of the circulating fan, then the servo motor is controlled to reverse, the rope reel is driven to reverse to take up the rope, so that the hook moves upward and lifts the circulating fan, then the device is pushed to move the circulating fan away from the heating furnace, then the connecting frame and the circulating fan are lowered to the low position by the retraction action of the electric push rod, so that the safety during the transfer of the circulating fan is improved, then the device is pushed to transfer the circulating fan to the target position, then the hook moves downward by the action of the servo motor, and the circulating fan is lowered, so that the circulating fan is transferred to the target position.

[0013] The device has the beneficial effects compared with the prior art:

[0014] The heating furnace top circulating fan replacement auxiliary device has the advantages of simple structure, convenient use, efficient and safe transfer of the circulating fan to a low position, and convenience for subsequent maintenance and replacement of the circulating fan. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the front view of the embodiment of the utility model;

[0016] Figure 2 is the right view of the embodiment of the utility model.

[0017] In the diagram: 1. Wheel; 2. Wheel seat; 3. Base; 4. Reinforcing rib; 5. Electric push rod; 6. Rib plate; 7. Connecting frame; 8. Mounting plate; 9. Bearing seat; 10. Rope shaft; 11. Rope reel; 12. Lifting rope; 13. Lifting hook; 14. Servo motor; 15. Heating furnace; 16. Circulating fan. Detailed Implementation

[0018] The embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0019] Example 1:

[0020] like Figure 1 , Figure 2 As shown, the auxiliary device for replacing the circulating fan at the top of the heating furnace according to this utility model includes two corresponding left and right bases 3. A walking component is installed at the bottom of each of the two bases 3, and an electric push rod 5 is installed at the top of each of the two bases 3. A connecting frame 7 is fixedly connected between the ends of the piston rods of the two electric push rods 5. Two mounting plates 8 are fixedly connected to the connecting frame 7. A bearing seat 9 is installed on each of the two mounting plates 8. A rope shaft 10 is rotatably installed between the two bearing seats 9. A rope disc 11 is fixedly connected to the rope shaft 10. A hanging rope 12 is wound on the rope disc 11. A hook 13 is fixedly connected to the hanging rope 12. A rotation drive component is connected to the rope shaft 10.

[0021] In use, the device is pushed to the heating furnace 15 by the walking component. Then, the two electric push rods 5 extend to raise the connecting frame 7. The device then spans both sides of the heating furnace 15 and is pushed to the target position, so that the hook 13 is above the circulating fan 16 to be replaced. After the mounting bolts of the circulating fan 16 are removed, the rotation drive component is activated to rotate the rope shaft 10, which in turn rotates the rope reel 11 to release the rope, causing the hook 13 to move downward. The hook 13 is then hooked onto the lifting lug of the circulating fan 16. Finally, the rotation drive component is controlled. In the reverse action, the rope shaft 10 drives the rope disc 11 to rotate in the opposite direction to retract the rope, thereby causing the hook 13 to move upward and lift the circulating fan 16. Then, the device is pushed to move the circulating fan 16 away from the heating furnace 15. Then, the electric push rod 5 retracts to lower the connecting frame 7 along with the circulating fan 16 to a low position, thereby improving the safety of the circulating fan 16 during transfer. Then, the device is pushed to transfer the circulating fan 16 to the target position. Then, the rotating drive component is activated again to move the hook 13 downward and lower the circulating fan 16, thus transferring the circulating fan 16 to the target position.

[0022] Example 2:

[0023] like Figure 1 , Figure 2 As shown, based on Example 1,

[0024] Further, the walking assembly comprises wheel seats 2 fixedly connected at the front and rear ends of the base 3, each wheel seat 2 is rotationally connected with a wheel 1, the base 3 is moved by the rotation of the wheel 1, thereby facilitating the transfer of the device;

[0025] Further, the base 3 and the shell of the electric push rod 5 are fixedly connected with a reinforcing rib 4, the reinforcing rib 4 can increase the structural stability of the electric push rod 5;

[0026] Further, the connecting frame 7 and the piston rod of the electric push rod 5 are fixedly connected with a rib plate 6, the rib plate 6 can increase the structural stability of the connecting frame 7;

[0027] Further, the rotating drive assembly is a servo motor 14, the main shaft of the servo motor 14 is coupled with the rope shaft 10, by the positive and reverse action of the servo motor 14, the rope reel 11 can be driven to rotate in the positive and reverse directions by the rope shaft 10, thereby realizing the rope releasing and winding operation of the rope reel 11;

[0028] Further, the servo motor 14 is installed on the connecting frame 7, effectively improving the installation stability of the servo motor 14.

[0029] It is particularly pointed out that: in the description of the utility model, the terms "front", "rear", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model, and do not require the utility model to be necessarily constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

Claims

1. A furnace roof circulating fan replacement assist device characterized by: The application relates to a double-sided lifting device, which comprises two left and right corresponding bases (3), walking assemblies are arranged at the bottom of the two bases (3), electric push rods (5) are arranged at the top of the two bases (3), a connecting frame (7) is fixedly connected between the end portions of the piston rods of the two electric push rods (5), two mounting plates (8) are fixedly connected on the connecting frame (7), bearing seats (9) are arranged on the two mounting plates (8), a rope shaft (10) is rotatably arranged between the two bearing seats (9), a rope reel (11) is fixedly connected on the rope shaft (10), a lifting rope (12) is wound on the rope reel (11), a lifting hook (13) is fixedly connected on the lifting rope (12), and a rotary driving assembly is connected with the rope shaft (10).

2. The furnace roof circulating fan replacement aid according to claim 1, characterized in that: The walking assembly comprises wheel seats (2) fixedly connected at the front and rear ends of the base (3), and wheels (1) are rotatably connected on the wheel seats (2).

3. The furnace roof circulating fan replacement aid according to claim 1, characterized in that: The base (3) and the shell of the electric push rod (5) are fixedly connected with reinforcing ribs (4).

4. The furnace roof circulating fan replacement aid of claim 1, wherein: The connecting frame (7) and the piston rod of the electric push rod (5) are fixedly connected with a rib plate (6).

5. The furnace roof circulating fan replacement assisting device according to any one of claims 1 to 4, characterized in that: The rotary driving assembly is a servo motor (14), the main shaft of the servo motor (14) is connected with the rope shaft (10).

6. The furnace roof circulating fan replacement aid according to claim 5, characterized in that: The servo motor (14) is arranged on the connecting frame (7).

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