Device for detecting head warping of steel plate

Abstract

The utility model discloses a device for detecting head warping of a steel plate, which comprises a pair of upright posts (1), a light source transmitting / receiving device (2) and an iron block (3) are respectively arranged on the upright posts (1), a two-core optical fiber (4) and a steel wire rope (5) are arranged between the light source transmitting / receiving device (2) and the iron block (3), and the two-core optical fiber (4) is laid along the steel wire rope (5); the steel wire rope (5) horizontally penetrates through the through hole (3a), extends out of the iron block (3) and then is connected with a buffer spring (6); the buffer spring (6) is connected to a fixed column (7); the steel wire rope (5) and the two-core optical fiber (4) stretch across the advancing route of the steel plate, when the steel plate is warped and collides with the steel wire rope (5), the buffer spring (6) is lengthened, and the end, close to the iron block (3), of the two-core optical fiber (4) leaves the surface of the iron block (3). The utility model has the advantages that the emitted and reflected light is conducted in the optical fiber medium, the influence of field vibration is eliminated, the condition of the warped steel plate is detected, and the warped steel plate is prevented from crashing accessory equipment.

Description

A device for detecting warping of steel plates. Technical Field

[0001] This utility model belongs to the field of steel plate inspection technology, and in particular relates to a device for detecting the warping of steel plates. Background Technology

[0002] Currently, most of the tilt detection devices used in domestic straightening equipment employ proximity switches or cold detection methods. However, given the significant vibration and dust present during the straightening process, cold detection, relying solely on light emission and reflection, can lead to instability. If a tilt is missed even once, it can cause impact damage to equipment near the straightening machine.

[0003] In existing technologies, mechanical transmission is often used to detect steel plate warping. For example, Chinese patent application number CN202122480497.X discloses a steel plate warping detection device that uses a drive shaft to drive an absolute encoder, which measures the maximum rotation angle. The amount of warping can then be calculated or compared with a table. While this method uses an encoder and can determine the amount of warping, the equipment is expensive, the rotating parts occupy a lot of space, and the rotating parts may injure workers during the warping process. Furthermore, the contact between the steel plate and the rotating parts can damage the steel plate surface to some extent, and it cannot solve the problem of unstable light reflection. Furthermore, Chinese patent application number CN202121119559.8 discloses a device for detecting the warping of steel plates during the straightening process. This device uses a crossbar as the main mechanical structure, and its rotation serves as the basis for detection by an electrical proximity switch. When the steel plate touches the crossbar and causes it to rotate, the program controls all roller conveyors and the pre-straightening machine to stop operating, thus maximizing the detection of abnormal shutdowns caused by the warping of steel plates during the pre-straightening process. However, this structure still requires the steel plate to be in rigid contact with the crossbar, which inevitably leads to damage during the contact process. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of poor stability, limited detection effect, and easy damage of existing steel plate warping detection devices. It provides a device for detecting steel plate warping, which transmits emitted and reflected light in an optical fiber medium to eliminate the influence of on-site vibration, detects the warped steel plate in real time, and avoids the warped steel plate from damaging the accessory equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for detecting the warping of steel plates includes a pair of vertical columns, on which a light source emitting / receiving device and an iron block are respectively provided. Two optical fibers and a steel wire rope are provided between the light source emitting / receiving device and the iron block. One end of the two optical fibers is connected to the light source emitting / receiving device and the other end is in contact with the iron block. The two optical fibers are laid along the steel wire rope.

[0007] The iron block has a through hole. The end of the steel wire rope extends horizontally through the through hole and out of the iron block, and is then connected to a buffer spring. The outer end of the buffer spring is connected to a fixed post, and the buffer spring and the steel wire rope are on the same axis.

[0008] The steel wire rope and two optical fibers span the path of the steel plate. When the steel plate bumps into the steel wire rope, the buffer spring stretches and the end of the two optical fibers closest to the iron block leaves the surface of the iron block.

[0009] Furthermore, the column includes an iron block column and an installation column. The lower ends of both the iron block column and the installation column are connected to a fixed bracket. The fixed bracket includes three inclined support ribs. The upper ends of the support ribs are connected to the column and the lower ends are connected to the ground. The inclination angle of each support rib is the same.

[0010] Furthermore, a square box is connected to the top of the mounting column, and the light source transmitting / receiving device is located inside the square box. The square box is equipped with terminals for power supply and signal wiring, and a side door is provided on the side of the square box to facilitate the opening of the square box and the placement of the equipment.

[0011] Furthermore, the end of the two optical fibers near the light source transmitting / receiving device is designed with a snap-fit ​​structure.

[0012] Furthermore, the end of the two optical fibers closest to the iron block is designed as an end face structure.

[0013] Furthermore, one side of the terminal in the square box is connected to the field control system, which is then connected to the roller conveyor to control the rotation and stopping of the roller conveyor.

[0014] Compared with the prior art, the advantages of the technical solution of this utility model are as follows:

[0015] (1) By installing a light source emission and detection device and an optical fiber at the inlet and outlet of the straightening machine, when the steel plate tip hits the steel wire rope and the optical fiber, the optical fiber leaves the iron block with the steel wire rope, the optical circuit signal is cut off, the control system detects the signal and controls the roller to stop rotating, which can prevent the tipped steel plate from hitting other equipment and improve the operational safety.

[0016] (2) This utility model can effectively detect the warping of steel plates, preventing the warped steel plates from hitting equipment or people crossing the bridge, ensuring the safety and stability of the equipment, and improving the safety environment for nearby workers. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the device structure for detecting the warping of steel plates according to this utility model;

[0018] Figure 2 is a schematic diagram of the control system connection of this utility model. Detailed Implementation

[0019] Example

[0020] To make this utility model clearer, the following description, in conjunction with the accompanying drawings, further illustrates a device for detecting warped ends of steel plates. The specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this utility model.

[0021] Referring to Figure 1, a device for detecting warped ends of steel plates is characterized by:

[0022] It includes a pair of vertical columns 1, each column 1 including an iron block column 1a and a mounting column 1b. The lower ends of both the iron block column 1a and the mounting column 1b are connected to a fixed bracket 8. The fixed bracket 8 includes three inclined support ribs 8a. The upper end of the support ribs 8a is connected to the column 1 and the lower end is connected to the ground. The inclination angle of each support rib 8a is the same.

[0023] Iron block 3 is connected to the top of iron block column 1a, and square box 9 is connected to the top of mounting column 1b. Square box 9 is equipped with light source emitting / receiving device 2 and terminal 10 for power supply and signal wiring. Side door 9a is provided on the side of square box 9 to facilitate opening of square box and placement of equipment.

[0024] Two optical fibers 4 and a steel wire rope 5 are provided between the light source transmitting / receiving device 2 and the iron block 3. One end of the two optical fibers 4 is connected to the light source transmitting / receiving device 2, and the other end is in contact with the iron block 3. The two optical fibers 4 are laid along the steel wire rope 5.

[0025] The end of the two-core optical fiber 4 near the light source transmitting / receiving device 2 is set with a snap-fit ​​structure, and the end near the iron block 3 is set with an end face structure;

[0026] The iron block 3 has a through hole 3a. The end of the steel wire rope 5 extends horizontally through the through hole 3a and out of the iron block 3, and is then connected to a buffer spring 6. The outer end of the buffer spring 6 is connected to the fixed post 7, and the buffer spring 6 and the steel wire rope 5 are on the same axis.

[0027] The steel wire rope 5 and the two optical fibers 4 span the steel plate's travel path. When the steel plate's tip hits the steel wire rope 5, the buffer spring 6 stretches and becomes longer. The end of the two optical fibers 4 closest to the iron block 3 leaves the surface of the iron block 3. The terminal 10 in the square box 9 is connected to the field control system 11. The control system 11 is then connected to the roller conveyor 12 to control the rotation and stop of the roller conveyor.

[0028] In use, the terminal 10 in the square box 9 is connected to the field control system 11. When the steel plate tip hits the steel wire rope 5 and the two optical fibers 4, the two optical fibers 4 leave the iron block 3 along with the steel wire rope 5, the optical circuit signal is cut off, the control system 11 detects the signal and controls the roller conveyor 12 to stop rotating, thus preventing the tipped steel plate from hitting other equipment.

[0029] In this embodiment, one end of the two-core optical fiber 4 is made into a snap-fit ​​form and connected to the light source transmitting / receiving device 2 to realize the transmission of light inside the optical fiber; the other end is made into an end face form to facilitate the transmission / reception of optical signals. In order to protect the optical fiber and improve its strength, a steel wire rope 5 is installed between the supports, and the optical fiber is laid along the steel wire rope 5.

[0030] In this embodiment, a smooth and flat iron block 3 with small holes is installed on the iron block column 1a. The iron block 3 is used to reflect optical fiber signals. The small holes of the iron block 3 are used to fix and pull the steel wire rope 5. The steel wire rope 5 passes through the iron block 3 and is connected to a buffer spring 6. When the steel plate tip hits the steel wire rope 5, it plays a buffering role in stretching and lengthening.

[0031] This invention is mainly used in straightening machines, but it is also applicable to other production equipment that needs to detect whether steel plates have warped ends. Specifically, it can detect whether steel plates have warped ends based on warping detection sensors, thus preventing straightened steel plates from damaging equipment near the process and extending the service life of the equipment.

[0032] In addition to the embodiments described above, this utility model may have other implementations. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by this utility model.

Claims

1. A device for detecting warping of steel plates, characterized in that: It includes a pair of vertical columns (1), on which a light source transmitting / receiving device (2) and an iron block (3) are respectively provided. Two optical fibers (4) and a steel wire rope (5) are provided between the light source transmitting / receiving device (2) and the iron block (3). One end of the two optical fibers (4) is connected to the light source transmitting / receiving device (2), and the other end is in contact with the iron block (3). The two optical fibers (4) are laid along the steel wire rope (5). The iron block (3) is provided with a through hole (3a). The steel wire rope (5) After the end of the steel plate passes horizontally through the through hole (3a) and extends out of the iron block (3), it is connected to a buffer spring (6). The outer end of the buffer spring (6) is connected to the fixed column (7), and the buffer spring (6) and the steel wire rope (5) are on the same axis. The steel wire rope (5) and the two optical fibers (4) span the steel plate's travel path. When the steel plate bumps into the steel wire rope (5), the buffer spring (6) stretches and becomes longer, and the end of the two optical fibers (4) close to the iron block (3) leaves the surface of the iron block (3).

2. The device for detecting warping of steel plates according to claim 1, characterized in that: The column (1) includes an iron block column (1a) and an installation column (1b). The lower ends of the iron block column (1a) and the installation column (1b) are connected to a fixed bracket (8). The fixed bracket (8) includes three inclined support ribs (8a). The upper end of the support rib (8a) is connected to the column (1), and the lower end is connected to the ground. The inclination angle of each support rib (8a) is the same.

3. The device for detecting warping of steel plates according to claim 2, characterized in that: The top of the mounting column (1b) is connected to a square box (9), the light source transmitting / receiving device (2) is located inside the square box (9), and the square box (9) is provided with terminals (10) for power supply and signal wiring. The side of the square box (9) is provided with a side door (9a).

4. The apparatus for detecting warping of steel plates according to any one of claims 1 to 3, characterized in that: The end of the two-core optical fiber (4) near the light source transmitting / receiving device (2) is designed with a snap-fit ​​structure.

5. The apparatus for detecting warping of steel plates according to any one of claims 1 to 3, characterized in that: The end of the two-core optical fiber (4) near the iron block (3) is designed as an end face structure.

6. The device for detecting warping of steel plates according to claim 3, characterized in that: The terminal (10) in the square box (9) is connected to the field control system (11), and the control system (11) is then connected to the roller conveyor (12).

Images