Protective device and strip steel withdrawal and straightening production line

Abstract

The utility model discloses a protection device and a strip steel withdrawal and straightening production line. The technical problem that strip steel is prone to impacting a surface detector in the production process in the prior art is solved. The protection device is applied to a surface detector of a protection strip steel withdrawal and straightening production line, the protection device comprises a fixed frame, a movable frame and a driving part, the movable frame is movably connected to the fixed frame in the width direction of strip steel, and the movable frame comprises a protection plate used for stretching into the position between the strip steel and the corresponding surface detector; the driving part is installed on the fixed frame, and the output end of the driving part is connected with the movable frame so that the movable frame can move in a reciprocating mode in the width direction of the strip steel, and the protection plate can stretch into the position between the strip steel and the corresponding surface detector or be located outside the strip steel and the corresponding surface detector. And the protection plate can separate the strip steel from the surface detector, so that the surface detector is prevented from being damaged by the turnup or collapsed strip steel.

Description

Technical Field

[0001] The present application belongs to the technical field of strip steel production lines, and specifically relates to a protective device and a strip steel straightening production line. Background Art

[0002] Surface detectors are widely used in modern steel rolling production. They are installed above and below the production line to detect the quality of the upper and lower surfaces of the strip in real time. In order to ensure the accuracy of detection, the surface detector is generally close to the surface of the strip. In actual production, the strip often warps or collapses when the strip is threaded, abnormally broken, or sheared. The surface detector equipment is often damaged, which has a great impact on normal production and equipment maintenance.

[0003] The traditional approach is to have operators track and confirm on-site to adjust the strip speed to ensure that the strip does not hit the surface detector during production. This approach greatly increases the difficulty of on-site operation, is greatly affected by human factors, has poor controllability, and cannot avoid the problem of the strip hitting the surface detector due to sudden strip breakage and coil shearing. Summary of the invention

[0004] In order to solve the above technical problems, the present application provides a protective device and a strip steel straightening production line.

[0005] The technical solution adopted to achieve the purpose of this application is that, in the first aspect of this application, a protective device is used to protect the surface detector of the strip steel straightening production line, and the protective device includes:

[0006] Fixed frame;

[0007] A movable frame is connected to the fixed frame in a movable manner along the width direction of the steel strip, wherein the movable frame comprises a protective plate for extending between the steel strip and the corresponding surface detector;

[0008] A driving member is installed on the fixed frame, and an output end of the driving member is connected to the movable frame so that the movable frame can reciprocate along the width direction of the steel strip, so that the protective plate extends between the steel strip and the corresponding surface detector or is located outside the steel strip and the corresponding surface detector.

[0009] In some embodiments, the surface detector is provided above and below the steel strip, and two protective plates are provided, and the two protective plates are respectively used to extend between the corresponding surface detector and the steel strip.

[0010] In some embodiments, the material-incoming sides of the two protection plates are trumpet-shaped, and the distance between the material-incoming sides of the two protection plates decreases successively along the running direction of the strip steel;

[0011] The discharge sides of the two protection plates are trumpet-shaped, and the distance between the discharge sides of the two protection plates increases successively along the running direction of the strip steel.

[0012] In some embodiments, the mobile frame further includes a connecting plate connected to the two protective plates, and the connecting plate is connected to an output end of the driving member.

[0013] In some embodiments, when the protective plate extends between the steel strip and the corresponding surface detector, the vertical projection of the surface detector falls within the protective plate.

[0014] In some embodiments, the protection device includes a guide roller for acting on the steel strip, and the guide roller is rotatably connected to the protection plate.

[0015] In some embodiments, two guide rollers are provided, and the two guide rollers are rotatably connected to the protective plate respectively, and the distance between the two guide rollers is 50 to 100 mm.

[0016] In some embodiments, more than one track is provided in the fixed frame, and the movable frame is provided with a sliding member matching the track, and the sliding member is connected to the protective plate.

[0017] In some embodiments, two tracks are provided, the two tracks are arranged opposite to each other along the running direction of the steel strip, the tracks are provided with slide grooves, the protective plate is connected to two rollers, and the two rollers are respectively rolled in the corresponding slide grooves.

[0018] In a second aspect of the present application, a strip steel straightening production line is provided, comprising:

[0019] Straightening machine;

[0020] A surface detector is installed on the tension and leveling machine and is located above or below the strip;

[0021] The above-mentioned protective device, wherein the protective plate is used to extend between the steel strip and the corresponding surface detector;

[0022] A controller is electrically connected to the driving member.

[0023] It can be seen from the above technical scheme that the present application provides a protective device and a strip straightening production line, the protective device is used to protect the surface detector of the strip straightening production line, the protective device includes a fixed frame, a movable frame and a driving member, the movable frame is connected to the fixed frame for movement along the width direction of the strip, the movable frame includes a protective plate for extending between the strip and the corresponding surface detector; the driving member is installed on the fixed frame, and the output end of the driving member is connected to the movable frame so that the movable frame moves back and forth along the width direction of the strip, so that the protective plate extends between the strip and the corresponding surface detector or is located outside the strip and the corresponding surface detector.

[0024] During the normal operation of the straightening machine, if the strip does not warp or collapse, the hydraulic cylinder can be used to control the protective plate to move to the standby position outside the strip and the corresponding surface detector. At this time, the surface detector can check the quality of the upper and / or lower surface of the strip. If the strip warps or collapses, the hydraulic cylinder can be used to control the protective plate to move to the working position between the strip and the corresponding surface detector. At this time, the protective plate can isolate the strip from the surface detector to prevent the warped or collapsed strip from damaging the surface detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the strip steel straightening production line in the embodiment of the present application.

[0026] Figure 2 for Figure 1 Side view of the strip straightening line.

[0027] Figure 3 This is a schematic diagram of the structure of the protective device in the working position in the embodiment of the present application.

[0028] Figure 4 This is a schematic diagram of the structure in which the protective device is located in the standby position in an embodiment of the present application.

[0029] Figure 5 It is a schematic diagram of the structure of the protective device in the embodiment of the present application.

[0030] Explanation of the reference numerals: 100 - protective device, 110 - fixed frame, 111 - track, 120 - movable frame, 121 - protective plate, 122 - connecting plate, 123 - guide roller, 124 - roller, 125 - pin shaft, 130 - driving member, 131 - valve table, 132 - oil pipe, 140 - controller; 200 - surface detector; 300 - strip steel; 400 - strip steel straightening production line. DETAILED DESCRIPTION

[0031] In order to enable technicians in the technical field to which the present application belongs to understand the present application more clearly, the technical solution of the present application is described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0032] In the embodiments of this application, see the attached Figure 3 , Attachment Figure 4 and attached Figure 5 , discloses a protective device, see attached Figure 1 and attached Figure 2 The protective device 100 is used to protect the surface detector 200 of the strip steel straightening production line 400. The protective device 100 includes a fixed frame 110, a movable frame 120 and a driving member 130. The movable frame 120 is connected to the fixed frame 110 for movement along the width direction of the strip steel 300. The movable frame 120 includes a protective plate 121 for extending between the strip steel 300 and the corresponding surface detector 200; the driving member 130 is installed on the fixed frame 110, and the output end of the driving member 130 is connected to the movable frame 120 so that the movable frame 120 reciprocates along the width direction of the strip steel 300, so that the protective plate 121 extends between the strip steel 300 and the corresponding surface detector 200 or is located outside the strip steel 300 and the corresponding surface detector 200.

[0033] The fixed frame 110 is in the shape of a gate. The fixed frame 110 can be connected to the straightening machine of the straightening production line, or it can be directly installed on the straightening production line. At this time, the bottom of the fixed frame 110 can be in friction contact with the ground, or it can be in friction contact with the straightening machine, as long as it can be ensured that the fixed frame 110 can remain stable and not shake.

[0034] The mobile frame 120 can move on the fixed frame 110. During the movement, the protective plate 121 on the mobile frame 120 can be extended between the steel strip 300 and the corresponding surface detector 200, or extended outside the steel strip 300 and the corresponding surface detector 200; when the protective plate 121 is extended between the steel strip 300 and the corresponding surface detector 200, the mobile frame 120 can be in the working position; when the protective plate 121 is extended outside the steel strip 300 and the corresponding surface detector 200, the mobile frame 120 can be in the standby position.

[0035] The driving member 130 may be a hydraulic cylinder, the output end of which is connected to the mobile frame 120. The hydraulic cylinder may be installed on the fixed frame 110. When the protective plate 121 needs to be moved to the working position, the hydraulic cylinder may be started, and the hydraulic cylinder drives the protective plate 121 to move between the strip steel 300 and the corresponding surface detector 200; when the protective plate 121 needs to be moved to the standby position, the hydraulic cylinder drives the protective plate 121 to move outside the strip steel 300 and the corresponding surface detector 200. In order to facilitate the operation of the hydraulic cylinder, the hydraulic cylinder is connected to the valve station 131, wherein the hydraulic cylinder and the valve station 131 are connected through an oil pipe 132. The controller 140 realizes the action of the hydraulic cylinder by controlling the valve station 131, thereby driving the mobile frame 120 to be pushed in and pulled out. In order to facilitate the installation of the hydraulic cylinder, an installation position is provided at one end of the fixed frame 110. In order to facilitate the installation of the hydraulic cylinder on the fixed frame 110, in some embodiments, an ear plate with a hole is provided at one end of the fixed frame, the hydraulic cylinder is fixed to the mounting position on the fixed frame 110 by bolts, and the cylinder head of the hydraulic cylinder is connected to the ear plate with a hole of the movable frame 120 by a pin shaft 125.

[0036] Therefore, during the normal operation of the straightening machine, if the steel strip 300 does not warp or collapse, the protective plate 121 can be controlled by the hydraulic cylinder to move to a standby position outside the steel strip 300 and the corresponding surface detector 200, and the surface detector 200 can measure the quality of the upper surface and / or lower surface of the steel strip 300. If the steel strip 300 warps or collapses, the protective plate 121 can be controlled by the hydraulic cylinder to move to a working position between the steel strip 300 and the corresponding surface detector 200, and the protective plate 121 can isolate the steel strip 300 from the surface detector 200 to prevent the warped or collapsed steel strip 300 from damaging the surface detector 200.

[0037] In some embodiments, see the attached Figure 3 To Attachment Figure 5 , one surface detector 200 can be provided, and in this case, the surface detector 200 can be arranged above the steel strip 300, and one corresponding protective plate 121 can be provided, and one protective plate 121 can protect the surface detector 200; in other embodiments, one surface detector 200 can also be arranged below the steel strip 300, and one corresponding protective plate 121 can be provided, and one protective plate 121 can protect the surface detector 200.

[0038] In some embodiments, see the attached Figure 3 To Attachment Figure 5, surface detectors 200 are provided above and below the strip steel 300, and two protective plates 121 are provided. The two protective plates 121 are respectively used to extend between the corresponding surface detectors 200 and the strip steel 300. When the strip steel 300 of the production line breaks, the strip steel 300 loses tension, and the two protective plates 121 can move to between the corresponding surface detectors 200 and the strip steel 300. At this time, the two protective plates 121 can protect the corresponding surface detectors 200 to prevent the out-of-control strip steel 300 from damaging the surface detectors 200.

[0039] In some embodiments, see the attached Figure 2 The material-incoming sides of the two protective plates 121 are trumpet-shaped, and the distance between the material-incoming sides of the two protective plates 121 decreases in sequence along the running direction of the strip steel 300; the material-outgoing sides of the two protective plates 121 are trumpet-shaped, and the distance between the material-outgoing sides of the two protective plates 121 increases in sequence along the running direction of the strip steel 300. A guide plate may be welded to the material-incoming side of the protective plate 121, and the guide plate and the protective plate 121 may also be detachably connected; a guide plate may be welded to the material-outgoing side of the protective plate 121, and the guide plate and the protective plate 121 may also be detachably connected; after the guide plates are connected to both the material-incoming side and the material-outgoing side of the protective plate 121, the protective plate 121 and the guide plates connected to both ends of the protective plate 121 form a smooth opening in the shape of an "eight", which can guide the strip steel 300 into the frame.

[0040] In some embodiments, see the attached Figure 3 To Attachment Figure 5 The mobile frame 120 further includes a connecting plate 122 connected to the two protective plates 121, and the connecting plate 122 is connected to the output end of the driving member 130. When two protective plates 121 are provided, in order to facilitate the output end of the driving member 130 to simultaneously drive the two protective plates 121 to move, the two protective plates 121 are connected by the connecting plate 122. At this time, the two protective plates 121 are connected to the connecting plate 122 to form a U-shaped structure, and the connecting plate 122 is connected to the output end of the driving member 130. When it is necessary to move the two protective plates 121 at the same time, the driving member 130 can be started, and the output end of the driving member 130 can drive the two protective plates 121 to move, that is, when the strip steel 300 of the production line is broken, the U-shaped protective structure can protect the two surface detectors 200 located on the upper and lower surfaces of the strip steel 300, thereby protecting the surface detectors 200.

[0041] In some embodiments, see the attached Figure 3 To Attachment Figure 5 When the protective plate 121 extends between the steel strip 300 and the corresponding surface detector 200, the vertical projection of the surface detector 200 falls within the protective plate 121. That is, the protective plate 121 can completely cover the surface detector 200, and when the steel strip 300 breaks, the protective plate 121 can be effectively prevented from being damaged by the steel strip 300.

[0042] In some embodiments, see the attached Figure 3 To Attachment Figure 5 The protection device 100 includes a guide roller 123 for acting on the strip steel 300, and the guide roller 123 is rotatably connected to the protection plate 121. The guide roller 123 can be installed in the middle position of the protection plate 121, and can guide the strip steel 300 into the protection area surrounded by the two protection plates 121.

[0043] In some embodiments, see the attached Figure 3 To Attachment Figure 5 , there are two guide rollers 123, the two guide rollers 123 are respectively rotatably connected to the protection plate 121, and the spacing between the two guide rollers 123 is 50-100mm. The spacing between the guide rollers 123 can be 50mm, 63mm, 70mm, 82mm, 95mm or 100mm, at which time the strip steel 300 can pass between the two guide rollers 123, and at the same time, the strip steel 300 is in rolling contact with the guide rollers 123, which can avoid scratches on the surface of the strip steel 300; in some embodiments, the roller surface of the guide roller 123 can be a variable-section cylindrical surface, which prevents the guide roller 123 from being blocked with the strip steel 300 when the moving frame 120 slides from the standby position to the working position, and facilitates the strip steel 300 to pass between the two guide rollers 123.

[0044] In some embodiments, see the attached Figure 3 To Attachment Figure 5 The fixed frame 110 is provided with one or more tracks 111, and the mobile frame 120 is provided with a sliding member matching the track 111, and the sliding member is connected to the protective plate 121. The stability of the movement of the mobile frame 120 can be ensured by setting the track 111.

[0045] In some embodiments, see the attached Figure 2 To Attachment Figure 5There are two tracks 111, and the two tracks 111 are relatively arranged along the running direction of the steel strip 300, that is, when there is one surface detector, the two tracks 111 are relatively arranged along the running direction of the steel strip 300, and the two tracks 111 are located on one side of the corresponding surface detector, and the track 111 is provided with a slide groove, and the protective plate 121 is connected to two rollers 124, and the two rollers 124 are respectively rollingly arranged in the corresponding slide grooves. In some embodiments, when there are two surface detectors, four grooved tracks 111 are provided on the fixed frame 110, two of the four grooved tracks 111 are located above the strip steel 300, and two of the tracks 111 are located below the strip steel 300, and eight pulley bearings can be provided on the mobile frame 120, and the pulley bearings can be located at the four corners of the mobile frame 120, and the pulley bearings are connected to the mobile frame 120 by a pin 125, and the outer diameter of the pulley bearing matches the groove width of the track 111, so as to ensure that the pulley bearing moves on the track 111, wherein the groove width of the track 111 can be 1 mm to 3 mm larger than the outer diameter of the pulley bearing.

[0046] In the second aspect of this application, see the attached Figure 1 and attached Figure 2 , provides a strip steel straightening production line 400, including a straightening machine, a surface detector 200, the protective device 100 of the above embodiment and a controller 140, the surface detector 200 is installed on the straightening machine and is located above or below the strip steel 300; the protective device 100 of the above embodiment, the protective plate 121 is used to extend between the strip steel 300 and the corresponding surface detector 200; the controller 140 is electrically connected to the driving member 130.

[0047] The operation method of the strip straightening production line 400 is as follows:

[0048] Step 1: Install the anti-collision device at the surface detector 200 of the strip steel straightening production line 400. The hydraulic cylinder is connected to the hydraulic valve station 131 through an oil pipe. The action signal of the valve station 131 is connected to the production line automation controller 140. The controller 140 can realize manual control and automatic control respectively. Under normal circumstances, the movable frame 120 is in the standby position, that is, the protective plate 121 extends out of the strip steel 300 and the corresponding surface detector 200.

[0049] Step 2: Action mode of the equipment controller 140. The controller 140 can be controlled by the operator's button when it is manual, and the tension signal of the strip 300 is connected to the controller 140 when it is automatically controlled. The tension signal is detected and interlocked with the controller 140, that is, by connecting the production line automation interlocking signal, when the production line has strip threading, abnormal strip breakage, shearing, etc., the protective device is driven to move between the surface detector and the strip to prevent the strip from damaging the surface detector equipment.

[0050] Step three: When the production line is to thread the steel strip 300 or cut and reel it, the controller 140 is set to manual mode. Before the steel strip 300 is threaded or cut and reeled, the operator operates the controller 140 to push the movable frame 120 into the working position to protect the surface detector 200. After the strip 300 is threaded or cut and reeled, the operator operates the controller 140 to pull the movable frame 120 back to the standby position.

[0051] Step 4: When the production line is in normal production, the controller 140 is set to automatic mode. When the strip steel 300 maintains tension in production, the controller 140 controls the movable frame 120 to be in the standby position. When the strip steel 300 breaks on the production line, due to the loss of tension of the strip steel 300, the controller 140 will automatically push the movable frame 120 into the working position to protect the surface detector 200 from being damaged by the out-of-control strip steel 300 until the production line resumes normal production, and the operator pulls the movable frame 120 back to the standby position in manual mode.

[0052] Through the above embodiments, the present application has the following beneficial effects or advantages:

[0053] 1) During the normal operation of the straightening machine, if the strip does not warp or collapse, the hydraulic cylinder can be used to control the protective plate to move to the standby position outside the strip and the corresponding surface detector. At this time, the surface detector can check the quality of the upper and / or lower surface of the strip. If the strip warps or collapses, the hydraulic cylinder can be used to control the protective plate to move to the working position between the strip and the corresponding surface detector. At this time, the protective plate can isolate the strip from the surface detector to prevent the warped or collapsed strip from damaging the surface detector.

[0054] 2) By installing protective devices on the straightening machine production line, the problem of strip steel hitting the surface detector can be reduced without making large-scale modifications to the production line, thereby improving the production efficiency of the production line.

[0055] 3) The position of the mobile frame is controlled by combining the manual mode and the automatic mode to protect the surface inspection equipment and improve the production efficiency of the production line.

[0056] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0057] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A protective device used for protecting the surface detector of a strip steel straightening production line. It is characterized in that The protective device comprises: Fixed frame; A movable frame is connected to the fixed frame in a movable manner along the width direction of the steel strip, wherein the movable frame comprises a protective plate for extending between the steel strip and the corresponding surface detector; A driving member is installed on the fixed frame, and an output end of the driving member is connected to the movable frame so that the movable frame can reciprocate along the width direction of the steel strip, so that the protective plate extends between the steel strip and the corresponding surface detector or is located outside the steel strip and the corresponding surface detector.

2. The protective device according to claim 1, It is characterized in that The surface detector is provided above and below the strip, and two protective plates are provided. The two protective plates are respectively used to extend between the corresponding surface detector and the strip.

3. The protective device according to claim 2, It is characterized in that The material-incoming sides of the two protection plates are trumpet-shaped, and the distance between the material-incoming sides of the two protection plates decreases in sequence along the running direction of the strip steel; The discharge sides of the two protection plates are trumpet-shaped, and the distance between the discharge sides of the two protection plates increases successively along the running direction of the strip steel.

4. The protective device according to claim 2, It is characterized in that The mobile frame further comprises a connecting plate connected to the two protection plates, and the connecting plate is connected to the output end of the driving member.

5. The protective device according to any one of claims 1 to 4, It is characterized in that When the protective plate extends between the steel strip and the corresponding surface detector, the vertical projection of the surface detector falls inside the protective plate.

6. The protective device according to any one of claims 2 to 4, It is characterized in that The protection device comprises a guide roller for acting on the steel strip, and the guide roller is rotatably connected to the protection plate.

7. The protective device according to claim 6, It is characterized in that There are two guide rollers, which are rotatably connected to the protection plate respectively, and the distance between the two guide rollers is 50-100 mm.

8. The protective device according to any one of claims 1 to 4, It is characterized in that The fixed frame is provided with more than one track, the movable frame is provided with a sliding member matching the track, and the sliding member is connected with the protective plate.

9. The protective device according to claim 8, It is characterized in that The rails are provided with two tracks, which are arranged opposite to each other along the running direction of the strip steel, and the rails are provided with slide grooves. The protective plate is connected with two rollers, and the two rollers are respectively rolled in the corresponding slide grooves.

10. A strip steel straightening production line, It is characterized in that include: Straightening machine; A surface detector is installed on the tension and leveling machine and is located above or below the strip; The protective device according to any one of claims 1 to 9, wherein the protective plate is used to extend between the steel strip and the corresponding surface detector; A controller is electrically connected to the driving member.

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