Self-pressing opening adjustable furnace door lifting device

Abstract

The utility model provides a kind of self-pressing type opening degree adjustable furnace door lifting device, including furnace door lifting mechanism and furnace door opening degree adjusting mechanism, furnace door includes upper furnace door and lower furnace door being set up in upper and lower correspondence, furnace door lifting mechanism is set up corresponding to upper furnace door top, furnace door opening degree adjusting mechanism is set up on lower furnace door, upper furnace door and lower furnace door are linked by furnace door opening degree adjusting mechanism, the utility model furnace door lifting process is stable in operation, simple structure, it is convenient to adjust, install on site.

Description

Technical Field

[0001] This application relates to the technical field of strip steel heat treatment furnaces, and more specifically, to a self-pressurizing furnace door lifting device with adjustable opening. Background Technology

[0002] The furnace door of a suspended strip heat treatment furnace generally consists of an upper furnace door and a lower furnace door, which are pressed against the furnace door frame by their own weight. Different specifications of strip steel have different degrees of sag, therefore the furnace door must not only be able to be raised and lowered as a whole, but also be able to adjust the opening degree of the upper and lower furnace doors according to the sag of the strip steel. Currently, common furnace door lifting devices directly use a winch to drive the entire furnace door up and down via a short chain, and adjust the opening degree of the upper and lower furnace doors through a lifting mechanism.

[0003] The existing furnace door lifting device has the following problems: 1) The furnace door is prone to tilting and is difficult to adjust on-site, resulting in significant resistance during lifting and lowering; 2) The furnace door chain is exposed to a high-temperature environment for a long time, posing a great safety hazard; 3) The furnace door is heavy and is often equipped with a high-power winch, and the impact during the lifting and lowering process is relatively large; 4) The furnace door opening adjustment device is located in a harsh environment and lacks effective protection. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a self-pressurizing furnace door lifting device with adjustable opening degree in response to the above-mentioned problems.

[0005] The embodiments of this application are implemented as follows: This application provides a self-pressurizing adjustable furnace door lifting device, characterized in that it includes a furnace door lifting mechanism and a furnace door opening adjustment mechanism. The furnace door includes an upper furnace door and a lower furnace door arranged vertically. The furnace door lifting mechanism is installed on the top of the upper furnace door, and the furnace door opening adjustment mechanism is installed on the lower furnace door. The upper furnace door and the lower furnace door are linked together through the furnace door opening adjustment mechanism.

[0006] In some optional embodiments, the furnace door opening adjustment mechanism includes a drive motor, a lifting mechanism, and a linkage rod. The drive motor is installed in the middle of the lower furnace door, and the lifting mechanism is installed on the left and right sides of the drive motor. The lifting mechanism is connected to the drive motor through a coupling and to the upper furnace door through the linkage rod.

[0007] In some optional implementations, the furnace door lifting mechanism includes a lifting motor, a drive sprocket, and a driven sprocket. The drive sprocket and the driven sprocket are connected by a coupling. The upper furnace door is provided with lifting points corresponding to the positions of the drive sprocket and the driven sprocket, respectively. The lifting points are connected to the drive sprocket and the driven sprocket by lifting chains.

[0008] In some alternative implementations, one end of the lifting chain is connected to the lifting point, and the other end of the lifting chain bypasses the driving sprocket and the driven sprocket and is connected to the counterweight.

[0009] In some alternative implementations, a horizontal protective plate is provided at the upper edge of the lower furnace door.

[0010] In some alternative implementations, the lifting chains are two, and the two lifting chains are connected to the same lifting point and counterweight.

[0011] In some alternative implementations, the weight of the counterweight is the same as the weight of the furnace door.

[0012] In some alternative implementations, the elevator is fixed to the lower furnace door via a hinged seat, one end of the linkage rod is hinged to the elevator, and the other end is fixed to the upper furnace door via a hinged seat.

[0013] In some alternative implementations, the lift is a worm gear lift.

[0014] In some alternative implementations, an absolute encoder is mounted on the motor shaft of the lifting motor.

[0015] The beneficial effects of this application are as follows: The self-pressurizing adjustable furnace door lifting device provided by this application is equipped with a counterweight, the weight of which is close to the weight of the furnace door. Therefore, only a geared motor with very low power is needed to drive the furnace door to lift and lower. Due to the counterweight, the furnace door runs smoothly during lifting and lowering, and the impact during start-up and stopping is greatly reduced. The lower furnace door is connected to the upper furnace door through a linkage rod, so that the motor of the opening adjustment device and the lifting machine are far away from the upper edge of the lower furnace door, which can reduce the baking of hot gas inside the furnace. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view of the furnace door lifting device according to an embodiment of this application; Figure 2 This is a side view of the furnace door lifting device according to an embodiment of this application; Figure 3 for Figure 1 AA view. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] The features and performance of this application will be further described in detail below with reference to the embodiments.

[0023] like Figures 1-3 As shown, a self-pressurizing furnace door lifting device with adjustable opening includes a furnace door lifting mechanism and a furnace door opening adjustment mechanism. The furnace door includes an upper furnace door 1 and a lower furnace door 2 arranged correspondingly at the top and bottom. The furnace door lifting mechanism is installed on the top of the upper furnace door, and the furnace door opening adjustment mechanism is installed on the lower furnace door. The upper furnace door and the lower furnace door are linked together through the furnace door opening adjustment mechanism.

[0024] The furnace door opening adjustment mechanism includes a drive motor 3, a lifting mechanism 4, and a linkage rod 5. The drive motor is installed in the middle of the lower furnace door, and the lifting mechanism is installed on the left and right sides of the drive motor. The lifting mechanism is connected to the drive motor through a coupling and to the upper furnace door through the linkage rod.

[0025] The drive motor drives the elevator to extend and retract longitudinally, causing the lower furnace door to move up and down relative to the upper furnace door, adjusting the gap between the furnace door openings. At the same time, a linkage rod is installed between the elevator and the upper furnace door, which increases the physical distance between the elevator and the furnace door opening in the longitudinal direction, reducing the baking effect of the furnace heat on the elevator and extending the service life of the elevator.

[0026] The furnace door lifting mechanism includes a lifting motor 6, a drive sprocket 7, and a driven sprocket 8. The drive sprocket and the driven sprocket are connected by a coupling. The upper furnace door has lifting points corresponding to the positions of the drive sprocket and the driven sprocket, respectively. These lifting points are connected to the drive sprocket and the driven sprocket via lifting chains. The lifting motor drives the drive sprocket to rotate, which in turn drives the driven sprocket to rotate synchronously, thus raising and lowering the upper furnace door. The lower furnace door rises and falls along with the upper furnace door.

[0027] Furthermore, one end of the lifting chain is connected to the lifting point, and the other end of the lifting chain passes around the drive sprocket and the driven sprocket and is connected to the counterweight 9. The weight of the counterweight is the same as or close to the weight of the furnace door, so only a small-power geared motor is needed to drive the furnace door to rise and fall; due to the counterweight, the furnace door runs smoothly during the rising and falling process, and the impact during start-up and stopping is greatly reduced.

[0028] To achieve precise and automatic control of furnace door lifting, an absolute encoder is installed on the motor shaft of the lifting motor, which is electrically connected to the remote control system to achieve precise lifting.

[0029] Furthermore, the elevator is fixed to the lower furnace door via a hinged seat, one end of the linkage rod is hinged to the elevator, and the other end is fixed to the upper furnace door via the hinged seat. The elevator is preferably a worm gear elevator.

[0030] Furthermore, a horizontal protective plate 10 is provided at the upper edge of the lower furnace door to further enhance the protection of the elevator and drive motor.

[0031] Example 1 In this implementation scheme, there are two lifting chains, which are connected to the same lifting point and counterweight.

[0032] Even if one chain at each lifting point malfunctions, it will not affect the raising and lowering of the furnace door, greatly improving safety and reliability.

[0033] Example 2 In this implementation plan, both the driven sprocket device and the driving sprocket device are assembled at the manufacturing plant and sent to the site after passing the trial run.

[0034] Upon arrival at the site, the two sets of sprocket assemblies were initially positioned, followed by the installation of the counterweight and the upper furnace door. After the upper furnace door was adjusted into place, the two sets of sprocket assemblies were finally positioned, and then the coupling was installed.

[0035] After the upper furnace door is installed, install the linkage rod, the elevator, and the lower furnace door. Finally, install the opening adjustment coupling and the motor.

[0036] If the furnace door is still crooked after the above installation is completed, it can be further fine-tuned by using the connectors at the hanging points.

Claims

1. A self-pressurizing furnace door lifting device with adjustable opening, characterized in that, It includes a furnace door lifting mechanism and a furnace door opening adjustment mechanism. The furnace door includes an upper furnace door and a lower furnace door that are arranged vertically. The furnace door lifting mechanism is installed on the top of the upper furnace door, and the furnace door opening adjustment mechanism is installed on the lower furnace door. The upper furnace door and the lower furnace door are linked together through the furnace door opening adjustment mechanism.

2. The self-pressurizing adjustable opening furnace door lifting device according to claim 1, characterized in that, The furnace door opening adjustment mechanism includes a drive motor, a lifting mechanism, and a linkage rod. The drive motor is installed in the middle of the lower furnace door, and the lifting mechanism is installed on the left and right sides of the drive motor. The lifting mechanism is connected to the drive motor through a coupling and to the upper furnace door through the linkage rod.

3. A self-pressurizing furnace door lifting device with adjustable opening degree according to claim 1 or 2, characterized in that, The furnace door lifting mechanism includes a lifting motor, a drive sprocket, and a driven sprocket. The drive sprocket and the driven sprocket are connected by a coupling. The upper furnace door is provided with lifting points corresponding to the positions of the drive sprocket and the driven sprocket, respectively. The lifting points are connected to the drive sprocket and the driven sprocket by lifting chains.

4. The self-pressurizing adjustable opening furnace door lifting device according to claim 3, characterized in that, One end of the lifting chain is connected to the lifting point, and the other end of the lifting chain passes around the driving sprocket and the driven sprocket and is connected to the counterweight.

5. A self-pressurizing furnace door lifting device with adjustable opening degree according to claim 2 or 4, characterized in that, A horizontal protective plate is provided at the upper edge of the lower furnace door.

6. A self-pressurizing furnace door lifting device with adjustable opening degree according to claim 4, characterized in that, The lifting chain consists of two chains, which are connected to the same lifting point and counterweight.

7. A self-pressurizing furnace door lifting device with adjustable opening degree according to claim 4 or 6, characterized in that, The weight of the counterweight is the same as the weight of the furnace door.

8. A self-pressurizing furnace door lifting device with adjustable opening degree according to claim 2, characterized in that, The elevator is fixed to the lower furnace door via a hinged seat. One end of the linkage rod is hinged to the elevator, and the other end is fixed to the upper furnace door via a hinged seat.

9. A self-pressurizing furnace door lifting device with adjustable opening degree according to claim 8, characterized in that, The aforementioned elevator is a worm gear elevator.

10. A self-pressurizing furnace door lifting device with adjustable opening degree according to claim 3, characterized in that, An absolute encoder is installed on the motor shaft of the lifting motor.

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