Pickling inlet steel coil trolley detection device
By installing deceleration sensing and advance/retract position sensing devices under the track support of the steel coil trolley at the entrance of the pickling mill, and combining them with a PLC controller, the problem of proximity switches being easily blocked is solved, and convenient processing of signal anomalies and improved production safety are achieved.
Patent Information
- Application Number
- CN202422912044.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-28
AI Technical Summary
The proximity switches of the existing pickling mill entrance coil trolleys are easily blocked by strapping fragments, resulting in frequent false signals, affecting production safety, making maintenance difficult, and posing a risk of high-altitude operations.
The deceleration sensing device and the advance and retreat sensing device are set below the track support, and the receiving plate is set at the bottom of the trolley and connected through a PLC controller to increase the sensing accuracy and reduce the risk of signal blocking.
It reduces the difficulty of handling abnormal signal failures, avoids the risks of high-altitude operations, and improves production safety and maintenance efficiency.
Smart Images
Figure CN223396900U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of pickling mill steel feeding equipment and relates to a detection device for a pickling inlet steel coil trolley. Background Art
[0002] The forward and reverse positioning distance of the coil trolley at the entrance of the pickling mill is controlled by proximity switch detection. The coil trolley's proximity switch is installed on the upper part of one side, and the forward and reverse position sensing device is installed above the track and needs to be at the same height as the coil trolley's proximity switch. During production, the roller station often carries strapping fragments that fall near the coil trolley, causing the accumulated strapping near the track to block the proximity switch, resulting in false signals. As a result, the coil trolley fails to stop at the forward and reverse positions, causing accidents. Because the forward and reverse position sensing device is installed in a basement 3 meters above the ground, abnormal signal failures are difficult to handle. The narrow station also poses the risk of high-altitude operations. Adjusting and handling the limit is difficult, time-consuming, and inefficient. The high frequency of failures has a significant impact on production. Utility Model Content
[0003] The problem solved by the utility model is to provide a pickling entrance steel coil trolley detection device to solve the problems mentioned in the above background technology and avoid accidents caused by false signals due to obstruction by foreign objects such as strapping.
[0004] In order to solve the above problems, the technical solution adopted by the present invention is as follows: it includes a trolley, a track support and a PLC controller, the track support is provided with a driving track, the middle part of the trolley is provided with wheels that can travel on the driving track, the PLC controller is connected to the trolley, a deceleration sensing device and an advance and retreat sensing device are provided below the track support, a receiving plate adapted to the deceleration sensing device and the advance and retreat sensing device is provided on one side of the lower part of the trolley, and the deceleration sensing device, the advance and retreat sensing device and the receiving plate are all connected to the PLC controller. The deceleration sensing device and the advance and retreat sensing device are arranged below the track support, only 1.2 meters from the ground, so that abnormal signal faults are easy to handle; the receiving plate is arranged at the bottom of the trolley to prevent foreign objects such as strapping fragments from blocking the receiving plate.
[0005] In the above technical solution, a more specific technical solution is: a protective plate is provided above the receiving plate, and the protective plate is used to protect the receiving plate from being hit by foreign objects falling from above.
[0006] Further: the deceleration sensing device includes a support plate, a bracket and a photoelectric sensor, the support plate is fixed below the track support, the bracket is connected to the support plate, and the photoelectric sensor is arranged on the bracket.
[0007] Furthermore: the brackets connected to the support plate are respectively a first bracket and a second bracket, the first bracket is provided with a first photoelectric sensor, the second bracket is provided with a second photoelectric sensor, the first photoelectric sensor and the second photoelectric sensor are both connected to the PLC controller to increase sensing accuracy.
[0008] Furthermore: a first long hole and a second long hole are opened on the support plate, and the first bracket and the second bracket are respectively connected to the first long hole and the second long hole through a bolt assembly, and the distance between the first bracket and the second bracket can be adjusted by loosening or tightening the bolt assembly.
[0009] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects compared with the prior art: by arranging the deceleration sensing device and the advance and retreat sensing device below the track support, the height is reduced from the original 3 meters to 1.2 meters, which facilitates maintenance and processing when an abnormal signal failure occurs, and there is no risk of high-altitude operation; the receiving plate is arranged at the bottom of the trolley, and foreign objects such as strapping fragments will not block the receiving plate to cause interference and form false signals, effectively preventing accidents caused by false signals due to obstruction by foreign objects such as strapping. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural diagram of the present utility model.
[0011] Figure 2 It is a structural schematic diagram of the deceleration induction device of the utility model.
[0012] Figure 3 It is a schematic diagram of the utility model when the trolley passes through the deceleration sensing device.
[0013] In the figure: 1. Trolley; 11. Wheel; 2. Track support; 21. Driving track; 3. Deceleration sensing device; 31. Support plate; 32. First long hole; 33. Second long hole; 34. First bracket; 35. Second bracket; 36. First photoelectric sensor; 37. Second photoelectric sensor; 38. Bolt assembly; 4. Advance and retreat sensing device; 5. Receiving plate; 51. Protective plate. DETAILED DESCRIPTION
[0014] The present invention will be further described below in conjunction with the accompanying drawings:
[0015] like Figures 1 to 3The pickling entrance steel coil trolley detection device shown includes a trolley 1, a track support 2, and a PLC controller. The track support 2 is provided with a running track 21. The middle portion of the trolley 1 is provided with wheels 11 that can travel on the running track 21. The PLC controller is connected to the trolley 1. A deceleration sensor 3 and an advance / retract position sensor 4 are provided below the track support 2. A receiving plate 5 compatible with the deceleration sensor 3 and the advance / retract position sensor 4 is provided on one side of the lower portion of the trolley 1. The deceleration sensor 3, the advance / retract position sensor 4, and the receiving plate 5 are all connected to the PLC controller. The deceleration sensor 3 and the advance / retract position sensor 4 are arranged below the track support 2, only 1.2 meters from the ground, making it easier to handle abnormal signal faults. The receiving plate 5 is arranged below the trolley 1 to prevent foreign objects such as strapping fragments from blocking the receiving plate 5. A protective plate 51 is provided above the receiving plate 5, which is used to protect the receiving plate 5 from being hit by foreign objects falling from above; the deceleration sensing device 3 includes a support plate 31, a bracket and a photoelectric sensor, the support plate 31 is fixed to the bottom of the track support 2, the bracket is connected to the support plate 31, and the photoelectric sensor is arranged on the bracket; the brackets connected to the support plate 31 are respectively a first bracket 34 and a second bracket 35, the first bracket 34 is provided with a first photoelectric sensor 36, and the second bracket 35 is provided with a second photoelectric sensor 37, the first photoelectric sensor 36 and the second photoelectric sensor 37 are both connected to the PLC controller to increase the sensing accuracy; a first long hole 32 and a second long hole 33 are provided on the support plate 31, the first bracket 34 and the second bracket 35 are respectively connected to the first long hole 32 and the second long hole 33 by a bolt assembly 38, and the distance between the first bracket 34 and the second bracket 35 can be adjusted by loosening or tightening the bolt assembly 38.
[0016] During use, when the trolley 1 passes through the deceleration sensing device 3, the first photoelectric sensor 36 of the deceleration sensing device 3 or one of the deceleration sensing devices 3 senses the receiving plate 5 of the trolley 1, and the signal is transmitted to the PLC controller. The PLC controller controls the trolley 1 to start decelerating. When the advance and retreat sensing device 4 senses the receiving plate 5 of the trolley 1, the signal is transmitted to the PLC controller, and the PLC controller immediately controls the trolley 1 to stop moving. In this example, the advance and retreat sensing device 4 has the same structure as the deceleration sensing device 3.
[0017] It should be noted that the PLC controller provided by this utility model is a common device in the prior art. The technical solution of this utility model can be achieved by simply connecting it through the connection relationship provided in the embodiments of this utility model and setting up the PLC controller in a conventional manner. This does not involve any improvements in control methods or software. As for the parameter setting and usage of the PLC controller, those skilled in the art can purchase the PLC controller and refer to the accompanying instruction manual to implement the corresponding control settings. Detailed explanation is not provided here.
Claims
1. A trolley inspection device for pickling inlet steel coils, comprising a trolley, a track support, and a PLC controller, wherein the track support is provided with a running track, the middle portion of the trolley is provided with wheels that can travel on the running track, and the PLC controller is connected to the trolley, characterized in that: A deceleration sensing device and an advance and retreat sensing device are provided below the track support, and a receiving plate adapted to the deceleration sensing device and the advance and retreat sensing device is provided on one side of the lower part of the trolley. The deceleration sensing device, the advance and retreat sensing device and the receiving plate are all connected to the PLC controller.
2. The pickling entrance steel coil trolley detection device according to claim 1 is characterized in that: A protection plate is provided above the receiving plate.
3. The pickling entrance steel coil trolley detection device according to claim 2, characterized in that: The deceleration sensing device includes a support plate, a bracket and a photoelectric sensor. The support plate is fixed below the track support. The bracket is connected to the support plate. The photoelectric sensor is arranged on the bracket.
4. The pickling entrance coil trolley detection device according to claim 3, characterized in that: The brackets connected to the support plate are respectively a first bracket and a second bracket, the first bracket is provided with a first photoelectric sensor, the second bracket is provided with a second photoelectric sensor, and both the first photoelectric sensor and the second photoelectric sensor are connected to the PLC controller.
5. The pickling entrance coil trolley detection device according to claim 4, characterized in that: The support plate is provided with a first long hole and a second long hole, and the first bracket and the second bracket are respectively connected to the first long hole and the second long hole through bolt assemblies.