Crown block traveling positioning device

Abstract

The utility model relates to a crown block traveling positioning device which comprises a main beam, a walking trolley, a cab, a ground reference steel coil saddle and a control system and further comprises laser sensors, a limit switch, a vehicle-mounted terminal, a walking trolley encoder, a crane encoder and an LORA wireless communication module. The limit switch is arranged on the main beam and corresponds to the ground standard steel coil saddle, the vehicle-mounted terminal is arranged in a cab, the walking trolley encoder is arranged at the tail of a walking trolley motor rotating shaft, and the crane encoder is arranged at the tail of a crane motor rotating shaft. The laser sensor, the walking trolley encoder and the crane encoder are connected to an IO interface of the controller, and the vehicle-mounted terminal is wirelessly connected with the control system through the LORA wireless communication module. The steel coils are placed in order, the steel coils falling from the crown block are accurately positioned, the danger caused by steel coil storage deviation is avoided, the steel coil yield is greatly improved, and real-time monitoring of operators is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial automation, in particular to a positioning device for an overhead crane. Background Art

[0002] At present, most steel coil warehouses use a mature overhead crane positioning system, which adopts a fully online automatic operation mode. When the automatic start button is pressed, the system will run automatically. This system requires a vehicle-mounted subsystem, a ground subsystem, a scale subsystem, and a powerful background server. However, the whole system is costly and complex to maintain. If simple positioning or manual experience is used to operate the coil lowering and hook dropping, it is easy to cause inaccurate stopping position, resulting in uneven placement of steel coils and dangerous stacking of steel coils, and the edge of steel coils being cut during rewinding or loading. In addition, the wired communication of the overhead crane increases the construction cost and difficulty. The data communication between the overhead crane and the control system, the traditional overhead crane requires manual operation by the operator, communication and cooperation with the ground personnel, and the control of the overhead crane is cumbersome and inefficient. Summary of the invention

[0003] The utility model provides an overhead crane positioning device, which makes the center line of the steel coil overlap with the center line of the corresponding ground reference steel coil saddle, so that the steel coils are neatly arranged and the steel coils dropped by the overhead crane are accurately positioned, avoiding the danger of steel coils being stored in an off-center manner and in a dangerous pile, greatly improving the steel coil yield rate, and the neat arrangement of steel coils also improves the warehouse capacity, appearance and corporate image, and realizes real-time transmission of overhead crane data information and timely communication with personnel through wireless communication, thereby ensuring the operating safety of operators.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A crane positioning device comprises a main beam, a trolley, a driver's cab, a ground reference steel coil saddle and a control system, and also comprises a laser sensor, a limit switch, a vehicle-mounted terminal, a trolley encoder, a crane encoder and a LORA wireless communication module, wherein the laser sensor is installed on both sides of the trolley, the limit switch is arranged on the main beam corresponding to the ground reference steel coil saddle, the vehicle-mounted terminal is arranged in the driver's cab, the trolley encoder is arranged at the tail of the trolley motor shaft, the crane encoder is arranged at the tail of the crane motor shaft, the laser sensor, the trolley encoder and the crane encoder are connected to the IO interface of the controller, and the vehicle-mounted terminal is wirelessly connected to the control system via the LORA wireless communication module.

[0006] Furthermore, a signal display device is arranged in the driver's cab, the signal display device comprises a steel coil stacking number signal light, a power indicator light and an audible and visual alarm, and an input signal line of the signal display device is connected to an output end of the vehicle-mounted terminal.

[0007] Furthermore, positioning points are provided on both sides of the ground reference steel coil saddle, and laser sensors on both sides of the traveling trolley simultaneously detect the positioning points to determine whether the center line of the steel coil coincides with the center line of the ground reference steel coil saddle.

[0008] Furthermore, the vehicle-mounted terminal includes an operation display terminal and a LORA wireless communication module. The LORA wireless communication modules are arranged in the operation room and on the control system side. The operation display terminal is connected to the LORA wireless communication module in the operation room through an RS485 interface. The control system is connected to the LORA wireless communication module on the control system side through an Ethernet port or an RS485 interface. The LORA wireless communication module in the operation room communicates wirelessly with the LORA wireless communication module on the control system side.

[0009] Furthermore, the centerline position of the ground reference steel coil saddle corresponds to the limit switch, and a stop iron used in conjunction with the limit switch is provided on the traveling trolley.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1) Use laser sensors, positioning points of ground reference coil saddles, limit switches and control systems to achieve the overlap of the center line of the coil and the center line of the corresponding ground reference coil saddle, so that the coils are neatly placed and the crown crane drops the coils accurately;

[0012] 2) Avoid the danger caused by the uneven storage of steel coils, greatly improve the steel coil yield rate, and the neat arrangement of steel coils also improves the storage capacity, appearance and corporate image;

[0013] 3) The wireless communication between the overhead crane operating room and the control system is realized through the LORA wireless communication module, and the real-time transmission of overhead crane data information and timely communication with personnel ensure the safety of operators and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a structural schematic diagram of the signal display device of the utility model.

[0016] Figure 3 It is a wiring diagram of the control system described in the utility model.

[0017] Figure 4 It is a schematic diagram of the wireless communication structure of the utility model.

[0018] In the figure: 1. Main beam 2. Traveling trolley 3. Ground reference steel coil saddle 4. Laser sensor 5. Limit switch DETAILED DESCRIPTION

[0019] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings:

[0020] See Figure 1 , is a schematic diagram of the structure of the utility model. The utility model is a kind of overhead crane positioning device, including a main beam 1, a traveling trolley 2, a driver's cab, a ground reference steel coil saddle 3 and a control system, and also includes a laser sensor 4, a limit switch 5, a vehicle-mounted terminal, a traveling trolley 2, a crane encoder and a LORA wireless communication module. The laser sensor 4 is installed on both sides of the traveling trolley 2, and positioning points are arranged on both sides of the ground reference steel coil saddle 3. The laser sensors 4 on both sides of the traveling trolley 2 detect the positioning points at the same time to determine whether the center line of the steel coil coincides with the ground reference steel coil saddle 3. The limit switch 5 is arranged on the main beam 1, corresponding to the ground reference steel coil saddle 3, and the center line position of the ground reference steel coil saddle 3 corresponds to the limit switch 5. The traveling trolley 2 is provided with a stop iron used in conjunction with the limit switch 5; the vehicle-mounted terminal is arranged in the driver's cab, see Figure 2 The driver's cab is also provided with a signal display device, which includes a steel coil stacking number signal light, a power indicator light and an audible and visual alarm, and the input signal line of the signal display device is connected to the output end of the vehicle terminal; see Figure 3 The control system adopts Siemens S71500 series PLC, the trolley 2 encoder is set at the tail of the trolley 2 motor shaft, the crane encoder is set at the tail of the crane motor shaft, the laser sensor 4 is connected to the analog input module interface of the S71500 series PLC, the trolley 2 encoder and the crane encoder are connected to the high-speed counter module interface of the S71500 series PLC of the controller, the trolley 2 and the crane frequency signal lines are connected to the analog output module of the control system, and the on-board terminal is wirelessly connected to the control system through the LORA wireless communication module.

[0021] See Figure 4 , LORA wireless communication modules are arranged in the driver's cab and on the control system side, and the LORA wireless communication module adopts a LORA module with model GRM11X. The on-board terminal is connected to the LORA wireless communication module in the driver's cab through an RS485 interface, and the control system is connected to the LORA wireless communication module on the control system side through an Ethernet port or an RS485 interface. The LORA wireless communication module in the driver's cab communicates wirelessly with the LORA wireless communication module on the control system side.

[0022] Working principle: The trolley 2 drives the crane to walk on the overhead crane, and the limit switch 5 is used to start and stop the positioning point of the trolley 2. The laser sensors 4 on both sides of the trolley 2 emit laser signals to detect the positioning points on both sides of the ground reference steel coil saddle 3 respectively. If the positioning point is detected, the center line of the steel coil coincides with the center line of the ground reference steel coil saddle 3. If the positioning point cannot be detected, the steel coil is not placed neatly and the steel coil placement position is automatically adjusted. The walking distance of the trolley 2 and the lifting height of the crane are accurately located through the trolley 2 encoder and the crane encoder to better place the steel coils neatly. The control system records the steel coil stacking number, and the control system transmits the output information to the on-board terminal through the LORA wireless communication module. The on-board terminal displays the steel coil stacking number, power indication and fault alarm on the signal display terminal through the cable, which is convenient for the operator to monitor intuitively. The LORA wireless communication module enables the on-board terminal to communicate wirelessly with the control system, which is convenient for the operator to monitor in real time and automatically and neatly drop the coils. Further, the overhead crane positioning device can be connected to the Internet of Things through the LORA module as a hardware foundation.

[0023] The above embodiments are implemented based on the technical solution of the utility model, and detailed implementation methods and specific operation processes are given, but the protection scope of the utility model is not limited to the above embodiments. The methods used in the above embodiments are conventional methods unless otherwise specified.

Claims

1. A crane positioning device, comprising a main beam, a traveling trolley, a driver's cab, a ground reference steel coil saddle and a control system, characterized in that: It also includes a laser sensor, a limit switch, a vehicle-mounted terminal, a trolley encoder, a crane encoder and a LORA wireless communication module. The laser sensor is installed on both sides of the trolley, the limit switch is set on the main beam, corresponding to the ground reference steel coil saddle, the vehicle-mounted terminal is set in the driver's cab, the trolley encoder is set at the tail of the trolley motor shaft, the crane encoder is set at the tail of the crane motor shaft, the laser sensor, the trolley encoder and the crane encoder are connected to the IO interface of the controller, and the vehicle-mounted terminal is wirelessly connected to the control system through the LORA wireless communication module.

2. The overhead crane positioning device according to claim 1, characterized in that: A signal display device is arranged in the driver's cab, the signal display device comprises a steel coil stacking number signal light, a power indicator light and an audible and visual alarm, and an input signal line of the signal display device is connected to an output end of the vehicle-mounted terminal.

3. The overhead crane positioning device according to claim 1, characterized in that: Positioning points are arranged on both sides of the ground reference steel coil saddle, and laser sensors on both sides of the traveling trolley detect the positioning points simultaneously to determine whether the center line of the steel coil coincides with the center line of the ground reference steel coil saddle.

4. The overhead crane positioning device according to claim 1, characterized in that: The LORA wireless communication modules are arranged in the driver's cab and on the control system side. The on-board terminal is connected to the LORA wireless communication module in the driver's cab via an RS485 interface. The control system is connected to the LORA wireless communication module on the control system side via an Ethernet port or an RS485 interface. The LORA wireless communication module in the driver's cab communicates wirelessly with the LORA wireless communication module on the control system side.

5. The overhead crane positioning device according to claim 1, characterized in that: The center line position of the ground reference steel coil saddle corresponds to the limit switch, and a stop iron matched with the limit switch is arranged on the traveling trolley.

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