Inspection system and inspection equipment of horizontal annealing furnace and control method of inspection system and inspection equipment

Abstract

The invention discloses an inspection system and inspection equipment of a horizontal annealing furnace and a control method of the inspection system and the inspection equipment. The camera is fixedly arranged at the first end of the threading rod; the first wireless signal transceiver is fixedly arranged on the threading rod and is electrically connected with the camera; the second wireless signal transceiver is used for communicating with the first wireless signal transceiver; the controller is electrically connected with the second wireless signal transceiver and a plurality of transmission mechanisms of the horizontal annealing furnace, and the controller is used for controlling the plurality of transmission mechanisms when the strip penetrating rod is placed on a furnace bottom roller of the horizontal annealing furnace, so that the furnace bottom roller conveys the strip penetrating rod to a position close to a to-be-inspected device of the horizontal annealing furnace; and when the threading rod is conveyed to a position close to the to-be-inspected device, the camera is controlled to shoot the to-be-inspected device so as to obtain an inspection image. According to the invention, the technical problem of low maintenance safety of the horizontal annealing furnace is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of steel rolling, and in particular relates to an inspection system, inspection equipment and a control method of a horizontal annealing furnace. Background Art

[0002] With the consumption of production, the components to be inspected in the horizontal annealing furnace have different degrees of wear and tear, especially the roller body of the furnace bottom roller that is in direct contact with the strip steel, which has different degrees of defects such as nodules, deformation, scratches and breakage. Therefore, the replacement of the furnace bottom roller has become the main project of shutdown and maintenance. Every time the furnace is shut down, personnel are required to enter the furnace to check, confirm the status of the furnace bottom roller, and issue the number of replacement points for the furnace roller. Since the temperature inside the horizontal annealing furnace is still high after a period of shutdown, there are safety hazards such as heatstroke and suffocation when personnel enter. Therefore, the low maintenance safety of the horizontal annealing furnace is a technical problem that needs to be solved urgently. Summary of the invention

[0003] The embodiment of the present invention provides an inspection system, an inspection device and a control method of a horizontal annealing furnace, which solve the technical problem of low maintenance safety of the horizontal annealing furnace.

[0004] In the first aspect, an embodiment of the present invention provides an inspection system for a horizontal annealing furnace, comprising: a tape rod; a camera fixedly disposed at a first end of the tape rod; a first wireless signal transceiver fixedly disposed on the tape rod and electrically connected to the camera; a second wireless signal transceiver for communicating with the first wireless signal transceiver; a controller electrically connected to the second wireless signal transceiver and a plurality of transmission mechanisms of the horizontal annealing furnace, the plurality of transmission mechanisms being used to control the rotation of a plurality of furnace bottom rollers of the horizontal annealing furnace, the controller being used to: when the tape rod is placed on the furnace bottom rollers of the horizontal annealing furnace, control the plurality of transmission mechanisms so that the furnace bottom rollers convey the tape rod to a position close to a device to be inspected of the horizontal annealing furnace; when the tape rod is conveyed to a position close to the device to be inspected, control the camera to shoot the device to be inspected to obtain an inspection image of the device to be inspected, and acquire the inspection image from the camera.

[0005] In combination with the first aspect of the present invention, in some embodiments, it further includes: a mounting bracket fixedly disposed on the first end of the strap rod for fixing the camera.

[0006] In combination with the first aspect of the present invention, in some embodiments, it further includes: a battery, fixedly disposed on the mounting base, for providing power for the camera.

[0007] In combination with the first aspect of the present invention, in some embodiments, the allowable operating temperature of the battery includes 30° C. to 80° C., and the battery is wrapped with a heat insulating material.

[0008] In combination with the first aspect of the present invention, in some embodiments, the length of the belt threading rod is greater than a preset length, and the preset length is 3 times the roller spacing of the furnace bottom rollers.

[0009] In combination with the first aspect of the present invention, in some embodiments, the camera has an infrared night vision function, the allowable operating temperature of the camera includes 30° C. to 80° C., and the camera is wrapped with a heat-insulating material.

[0010] In a second aspect, an embodiment of the present invention provides an inspection device, comprising an inspection system for a horizontal annealing furnace as described in any one of the first aspects.

[0011] In a third aspect, an embodiment of the present invention provides a control method for an inspection system, which is applied to an inspection system of a horizontal annealing furnace as described in any one of the first aspect or the inspection equipment as described in the second aspect, and the method comprises: when the furnace bottom roller transmits the threading rod, acquiring a real-time image of the camera; based on the real-time image, controlling the multiple transmission mechanisms and the camera to obtain an inspection image of the device to be inspected.

[0012] In combination with the third aspect of the present invention, in some embodiments, the device to be inspected is a target hearth roller among the multiple hearth rollers, and based on the real-time image, the multiple transmission mechanisms and the camera are controlled to obtain an inspection image of the device to be inspected, including: if the real-time image indicates that the distance between the camera and the target hearth roller is a preset distance, controlling the multiple hearth rollers to stop rotating so that the belt threading rod is in a stationary state; and controlling the camera to shoot the target hearth roller to obtain an inspection image of the target hearth roller.

[0013] In combination with the third aspect of the present invention, in some embodiments, controlling the camera to photograph the target hearth roller to obtain an inspection image of the target hearth roller includes: acquiring multiple preset angles; taking each of the multiple preset angles as a target angle in turn; controlling the transmission mechanism of the target hearth roller to make the angle of the target hearth roller the target angle; when the angle of the target hearth roller is the target angle, controlling the camera to photograph the target hearth roller to obtain a target inspection sub-image; and taking the multiple target inspection sub-images corresponding to the multiple preset angles as the inspection image of the target hearth roller.

[0014] One or more technical solutions provided by the embodiments of the present invention achieve at least the following technical effects or advantages:

[0015] An inspection system for a horizontal annealing furnace provided in an embodiment of the present invention comprises: a threading rod; a camera fixedly arranged at a first end of the threading rod; a first wireless signal transceiver fixedly arranged on the threading rod and electrically connected to the camera; a second wireless signal transceiver for communicating with the first wireless signal transceiver; a controller electrically connected to the second wireless signal transceiver and a plurality of transmission mechanisms of the horizontal annealing furnace, the plurality of transmission mechanisms being used to control the rotation of a plurality of furnace bottom rollers of the horizontal annealing furnace, the controller being used to: when the threading rod is placed on the furnace bottom rollers of the horizontal annealing furnace, control the plurality of transmission mechanisms so that the furnace bottom rollers convey the threading rod to a position close to a device to be inspected of the horizontal annealing furnace; when the threading rod is conveyed to a position close to the device to be inspected, control the camera to shoot the device to be inspected to obtain an inspection image of the device to be inspected, and acquire the inspection image from the camera. The control signal of the controller is sent to the first wireless signal transceiver through the second wireless signal transceiver, and then the control signal is sent to the camera through the first wireless signal transceiver. Therefore, when the threading rod is transmitted to the position of the device to be inspected near the horizontal annealing furnace, the controller can control the camera to shoot the device to be inspected to obtain the inspection image of the device to be inspected, and the personnel can inspect the horizontal annealing furnace according to the inspection image. Therefore, it is avoided that personnel enter the horizontal annealing furnace for inspection, and it is also avoided that the personnel suffer from heat stroke, suffocation and other safety hazards. Therefore, the maintenance safety of the horizontal annealing furnace is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 Schematic diagram of an inspection system for a horizontal annealing furnace according to an embodiment of the present invention;

[0018] Figure 2 It is a schematic diagram of the inspection system of the horizontal annealing furnace in the embodiment of the present invention inspecting the device to be inspected. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0021] Figure 1 Schematic diagram of the inspection system of the horizontal annealing furnace in the embodiment of the present invention. Figure 1 As shown, an inspection system for a horizontal annealing furnace provided by an embodiment of the present invention includes: a tape rod 10; a camera 20, fixedly arranged at a first end of the tape rod 10; a first wireless signal transceiver 30, fixedly arranged on the tape rod 10 and electrically connected to the camera 20; a second wireless signal transceiver 40, used to communicate with the first wireless signal transceiver 30; a controller 50, electrically connected to the second wireless signal transceiver 40 and a plurality of transmission mechanisms of the horizontal annealing furnace, the plurality of transmission mechanisms being used to control the rotation of a plurality of furnace bottom rollers of the horizontal annealing furnace, the controller 50 being used to: when the tape rod 10 is placed on the furnace bottom roller of the horizontal annealing furnace, control the plurality of transmission mechanisms so that the furnace bottom roller conveys the tape rod 10 to a position close to a device to be inspected of the horizontal annealing furnace; when the tape rod 10 is conveyed to a position close to the device to be inspected, control the camera 20 to shoot the device to be inspected to obtain an inspection image of the device to be inspected, and obtain the inspection image from the camera 20.

[0022] It should be noted that the controller 50 can obtain images from the camera 20. Specifically, the images captured by the camera 20 are sent to the second wireless signal transceiver 40 through the first wireless signal transceiver 30, and then the second wireless signal transceiver 40 sends the images to the controller 50. In addition, the controller 50 can also control the camera 20 to turn on or off the shooting function. Specifically, the control signal of the controller 50 is sent to the first wireless signal transceiver 30 through the second wireless signal transceiver 40, and then the control signal is sent to the camera 20 through the first wireless signal transceiver 30, and the camera 20 turns on or off the shooting function according to the control signal.

[0023] refer to Figure 2As shown, during the rotation of the furnace bottom roller of the horizontal annealing furnace, the threading rod 10 moves from the entrance of the horizontal annealing furnace to the exit of the horizontal annealing furnace. In addition, the threading rod 10 is movably arranged on the furnace bottom roller of the horizontal annealing furnace. Depending on the friction between the threading rod 10 and the furnace bottom roller, the furnace bottom roller can transmit the threading rod 10 to a position close to the device to be inspected in the horizontal annealing furnace. In addition, a transmission mechanism is used to control the rotation of a furnace bottom roller.

[0024] It should be noted that when the furnace bottom roller transmits the threading rod 10, the first wireless signal transceiver 30 and the threading rod move synchronously in the furnace, and the controller 50 and the second wireless signal transceiver 40 can be arranged outside the furnace body of the horizontal annealing furnace. At this time, since the controller 50 and the second wireless signal transceiver 40 are not arranged in the furnace, there is no need to use insulation material to wrap the controller 50 and the second wireless signal transceiver 40, so the beneficial effect of reducing costs is achieved.

[0025] It should be noted that if the controller 50 and the second wireless signal transceiver 40 are not arranged outside the furnace body of the horizontal annealing furnace, then the personnel cannot synchronously obtain the real-time image of the device in the furnace, cannot accurately locate the position of the camera 20, and cannot flexibly control the camera 20 to shoot the device to be inspected. The personnel can only wait for the threading rod 10 to come out of the exit of the horizontal annealing furnace and then check the image shot by the camera 20. At this time, the image shot by the camera 20 may not be clear enough, and may also cause reshooting, reducing work efficiency. Therefore, the embodiment of the present invention limits the controller 50 and the second wireless signal transceiver 40 to be arranged outside the furnace body of the horizontal annealing furnace, and the personnel can also obtain the real-time image of the camera 20 from the controller 50 in real time. The personnel can arbitrarily specify the device to be inspected, and flexibly control the furnace bottom roller to transmit the threading rod 10 to the position of the device to be inspected near the horizontal annealing furnace, thereby improving the controllability of the inspection system and also improving work efficiency.

[0026] In some embodiments, the inspection system for the horizontal annealing furnace further includes: a mounting bracket, fixedly disposed on the first end of the belt threading rod 10 , for fixing the camera 20 .

[0027] refer to Figure 2 As shown, by fixing the mounting base to the first end of the belt threading rod 10 to fix the camera 20, the stability of the camera 20 is ensured, and the camera 20 is prevented from shaking and causing unclear images, thereby improving the reliability of the inspection system.

[0028] In some embodiments, the inspection system for a horizontal annealing furnace further includes: a battery 60 fixedly disposed on a mounting base for providing power to the camera 20 .

[0029] In some embodiments, the allowable operating temperature of the battery 60 includes 30° C. to 80° C., and the battery 60 is wrapped with a heat-insulating material.

[0030] In some embodiments, the length of the belt threading rod 10 is greater than a preset length, and the preset length is 3 times the roller spacing of the furnace bottom rollers.

[0031] refer to Figure 2 As shown, if the length of the threading rod 10 is too small, then the threading rod 10 may fall from the gap between the furnace bottom rollers during the process of the furnace bottom rollers transmitting the threading rod 10, causing the inspection system to fail to work. Therefore, the embodiment of the present invention limits the length of the threading rod 10 to be greater than the preset length, and the preset length is 3 times the roller spacing of the furnace bottom rollers, ensuring that the number of furnace bottom rollers covered by the threading rod is at least 3, thus preventing the furnace bottom rollers from falling from the gap between the furnace bottom rollers, thereby improving the reliability of the inspection system.

[0032] In some embodiments, the camera 20 has an infrared night vision function, the operating temperature of the camera 20 is within a range of 30°C to 80°C, and the camera 20 is wrapped with heat-insulating materials. It should be noted that the above-mentioned limitations ensure the normal operation of the inspection system, thereby improving the reliability of the inspection system.

[0033] An inspection system for a horizontal annealing furnace provided in an embodiment of the present invention comprises: a tape rod 10; a camera 20, fixedly arranged at a first end of the tape rod 10; a first wireless signal transceiver 30, fixedly arranged on the tape rod 10 and electrically connected to the camera 20; a second wireless signal transceiver 40, used to communicate with the first wireless signal transceiver 30; a controller 50, electrically connected to the second wireless signal transceiver 40 and a plurality of transmission mechanisms of the horizontal annealing furnace, the plurality of transmission mechanisms being used to control the rotation of a plurality of furnace bottom rollers of the horizontal annealing furnace, the controller 50 being used to: when the tape rod 10 is placed on the furnace bottom roller of the horizontal annealing furnace, control the plurality of transmission mechanisms so that the furnace bottom roller transmits the tape rod 10 to a position close to a device to be inspected of the horizontal annealing furnace; when the tape rod 10 is transmitted to a position close to the device to be inspected, control the camera 20 to shoot the device to be inspected to obtain an inspection image of the device to be inspected, and acquire the inspection image from the camera 20. The control signal of the controller 50 is sent to the first wireless signal transceiver 30 through the second wireless signal transceiver 40, and then the control signal is sent to the camera 20 through the first wireless signal transceiver 30. Therefore, when the threading rod 10 is transmitted to the position of the device to be inspected near the horizontal annealing furnace, the controller 50 can control the camera 20 to shoot the device to be inspected to obtain the inspection image of the device to be inspected, and the personnel can inspect the horizontal annealing furnace according to the inspection image. Therefore, it is avoided that personnel enter the horizontal annealing furnace for inspection, and it is also avoided that the personnel have safety hazards such as heat stroke and suffocation. Therefore, the maintenance safety of the horizontal annealing furnace is improved.

[0034] Based on the same inventive concept, an embodiment of the present invention provides an inspection device, including an inspection system for a horizontal annealing furnace according to any one of the above embodiments.

[0035] It should be understood that more implementation details of the inspection device in the embodiment of the present invention refer to the inspection system of the aforementioned horizontal annealing furnace, and for the sake of brevity of the specification, they are not repeated here.

[0036] Based on the same inventive concept, an embodiment of the present invention provides a control method for an inspection system, which is applied to an inspection system or inspection equipment of a horizontal annealing furnace. The method comprises: when the furnace bottom roller transmits the threading rod 10, obtaining a real-time image of a camera 20; based on the real-time image, controlling multiple transmission mechanisms and the camera 20 to obtain an inspection image of the device to be inspected.

[0037] In some embodiments, the device to be inspected is a target hearth roller among multiple hearth rollers. Based on the real-time image, multiple transmission mechanisms and cameras 20 are controlled to obtain an inspection image of the device to be inspected, which may include: if the real-time image indicates that the distance between the camera 20 and the target hearth roller is a preset distance, the multiple hearth rollers are controlled to stop rotating so that the belt threading rod 10 is in a stationary state; and the camera 20 is controlled to shoot the target hearth roller to obtain an inspection image of the target hearth roller.

[0038] It should be noted that the preset distance may be 300 mm.

[0039] It should be noted that the number of devices to be inspected can be one or more. Specifically, when the number of devices to be inspected is one, the device to be inspected can be one of the multiple hearth rollers, and when the number of devices to be inspected is multiple, the device to be inspected can be 2 hearth rollers, 3 hearth rollers or all hearth rollers, etc., among the multiple hearth rollers. Among them, when the devices to be inspected are all the hearth rollers among the multiple hearth rollers, the distance between the camera 20 and the first hearth roller among the multiple hearth rollers is controlled to be a preset distance, and the inspection image of the first hearth roller is obtained, and then the distance between the camera 20 and the second hearth roller among the multiple hearth rollers is controlled to be a preset distance, and the inspection image of the second hearth roller is obtained, and the above method is used to obtain the inspection images in sequence until the inspection image of the last hearth roller is obtained. It should also be noted that in addition to the hearth roller, the device to be inspected can also be a roller in the furnace, a refractory material, a furnace shell, accessories, a resistance belt, a thermocouple, a heating body, etc.

[0040] In some embodiments, controlling the camera 20 to shoot the target hearth roller to obtain an inspection image of the target hearth roller may include: acquiring multiple preset angles; taking each of the multiple preset angles as a target angle in turn; controlling the transmission mechanism of the target hearth roller to make the angle of the target hearth roller the target angle; when the angle of the target hearth roller is the target angle, controlling the camera 20 to shoot the target hearth roller to obtain a target inspection sub-image; and taking multiple target inspection sub-images corresponding to the multiple preset angles as the inspection image of the target hearth roller.

[0041] It should be noted that the multiple preset angles may include 120 degrees, 240 degrees, and 360 degrees. If only an image at one angle is obtained, the inspection may be incomplete, which may lead to inspection errors. Therefore, the embodiment of the present invention limits multiple preset angles to obtain images at multiple different angles, thereby avoiding incomplete inspection and improving inspection reliability.

[0042] It should be noted that the existing cold-rolled strip continuous horizontal annealing furnace generally includes an entrance sealing chamber, a radiation tube heating furnace, a resistance belt soaking furnace, a circulating cooling section, an exit sealing chamber, a furnace bottom roller, a resistance belt, a thermocouple, an exit sealing chamber and the like. With the production consumption, the equipment in the furnace has different degrees of loss, especially the furnace bottom roller body that is in direct contact with the strip, which has different degrees of defects such as nodules, deformation, scratches, and breakage. Therefore, the replacement of furnace rollers has become the main project of shutdown and maintenance. Every time the furnace is shut down, personnel are required to enter the furnace for inspection, confirm the status of the furnace rollers, and issue the number of points for replacing the furnace rollers. Therefore, the time for entering the furnace for inspection determines the duration of the shutdown and maintenance. By using the camera 20 to shoot, it is avoided that personnel enter the furnace, which also reduces the time for waiting for cooling down during shutdown, shortens the inspection time, and thus improves work efficiency.

[0043] It should be noted that the technical solution proposed in the embodiment of the present invention is to drive the furnace bottom roller of the annealing furnace to carry the straight portable belt rod 10 forward, and a wireless battery 60-type night vision small camera 20 is carried at the front end of the belt rod 10, and the state images of the roller, refractory, furnace shell, accessories, heating body, etc. in the furnace are obtained through the camera 20. Transmitted to the computer outside the furnace and saved through wireless signals. During the period, the camera 20 lens rotation and the observed furnace roller itself are used to achieve complete acquisition of the furnace state image information. Therefore, the furnace condition inspection of the horizontal annealing furnace can be realized without the need for personnel to enter the furnace, eliminating dangerous operations in limited spaces, improving the quality of furnace inspection, and being able to advance the furnace inspection time and shorten the shutdown time for maintenance. The straight belt rod 10 needs to be guaranteed to be in the horizontal center position of the furnace roller. Before use, it should be tested by the empty belt rod 10, and the furnace roller should be moved from the entrance of the annealing furnace to the exit to ensure that the horizontal center position offset is less than 50mm. The camera 20 is connected by wireless signals, and the power supply is a battery 60, and the power supply time is guaranteed to be at least 3 hours. In addition, the maximum height of the inspection system of the horizontal annealing furnace should not be higher than the minimum vertical distance between the furnace top component and the steel wire, which is generally less than 120mm.

[0044] It should be noted that when the furnace is inspected, the belt rod 10 with the camera 20 installed and fixed is first placed on the center line of the furnace bottom roller outside the entrance sealing chamber, and then the furnace bottom roller is moved forward at a speed of 25m / min. During the inspection, the camera 20 lens can be operated to move to complete the inspection of other furnace facilities except the furnace bottom roller. All the inspection processes can be stored in the hard disk for subsequent reverse inspection of the video.

[0045] It should be understood that more implementation details of the control method of the inspection system in the embodiment of the present invention refer to the inspection system of the aforementioned horizontal annealing furnace, and for the sake of brevity of the specification, they are not repeated here.

[0046] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. An inspection system for a horizontal annealing furnace, characterized in that: include: Threading rod; A camera is fixedly arranged on the first end of the belt threading rod; A first wireless signal transceiver is fixedly disposed on the strap rod and electrically connected to the camera; A second wireless signal transceiver, configured to communicate with the first wireless signal transceiver; A controller is electrically connected to the second wireless signal transceiver and multiple transmission mechanisms of the horizontal annealing furnace, and the multiple transmission mechanisms are used to control the rotation of multiple furnace bottom rollers of the horizontal annealing furnace. The controller is used to: when the belt threading rod is placed on the furnace bottom rollers of the horizontal annealing furnace, control the multiple transmission mechanisms so that the furnace bottom rollers convey the belt threading rod to a position close to the device to be inspected of the horizontal annealing furnace; when the belt threading rod is conveyed to a position close to the device to be inspected, control the camera to shoot the device to be inspected to obtain an inspection image of the device to be inspected, and acquire the inspection image from the camera.

2. The inspection system for a horizontal annealing furnace according to claim 1, characterized in that: Also includes: A mounting base is fixedly arranged on the first end of the strap rod and is used to fix the camera.

3. The inspection system for a horizontal annealing furnace according to claim 2, characterized in that: Also includes: The battery is fixedly arranged on the mounting base and is used to provide power for the camera.

4. The inspection system for a horizontal annealing furnace according to claim 3, characterized in that: The allowable operating temperature of the battery includes 30° C. to 80° C., and the battery is wrapped with a heat insulating material.

5. The inspection system for a horizontal annealing furnace according to claim 1, characterized in that: The length of the belt threading rod is greater than a preset length, and the preset length is 3 times the roller spacing of the furnace bottom rollers.

6. The inspection system for a horizontal annealing furnace according to claim 1, characterized in that: The camera has an infrared night vision function, the allowable working temperature of the camera includes 30° C. to 80° C., and the camera is wrapped with heat-insulating material.

7. An inspection device, characterized in that: An inspection system for a horizontal annealing furnace comprising any one of claims 1-6.

8. A control method for an inspection system, applied to the inspection system of a horizontal annealing furnace according to any one of claims 1 to 6 or the inspection device according to claim 7, characterized in that: include: When the furnace bottom roller conveys the tape threading rod, acquiring a real-time image of the camera; Based on the real-time image, the plurality of transmission mechanisms and the camera are controlled to obtain an inspection image of the device to be inspected.

9. The control method of the inspection system according to claim 8, characterized in that: The device to be inspected is a target hearth roller among the plurality of hearth rollers, and the controlling the plurality of transmission mechanisms and the camera based on the real-time image to obtain an inspection image of the device to be inspected includes: If the real-time image indicates that the distance between the camera and the target furnace bottom roller is a preset distance, the plurality of furnace bottom rollers are controlled to stop rotating so that the belt threading rod is in a stationary state; The camera is controlled to shoot the target hearth roller to obtain an inspection image of the target hearth roller.

10. The control method of the inspection system according to claim 9, characterized in that: The controlling the camera to shoot the target hearth roller to obtain an inspection image of the target hearth roller includes: Get multiple preset angles; Taking each of the plurality of preset angles as a target angle in turn; Controlling the transmission mechanism of the target hearth roller so that the angle of the target hearth roller is the target angle; When the angle of the target hearth roller is the target angle, controlling the camera to shoot the target hearth roller to obtain a target inspection sub-image; The multiple target inspection sub-images corresponding to the multiple preset angles are used as the inspection images of the target furnace bottom roller.

Images