Fixed crane boom anti-collision system

Abstract

The utility model discloses a fixed crane boom anti-collision system. Any two adjacent fixed cranes are respectively provided with a limit switch, an electronic compass, an angle sensor and a PLC (Programmable Logic Controller); two groups of limit switches are used for detecting the position of an arm support entering and exiting a rotation overlapping area when the fixed crane rotates; the angle sensor is used for detecting the pitching angle of the cantilever crane during loading and unloading operation; judging whether the boom of the fixed crane enters the rotation overlapping area or not through an electronic compass; and the PLC comprehensively judges whether the collision accident of the boom occurs or not, and sends a locking signal to the adjacent fixed crane through the interlocking signal line, so that the boom of the adjacent fixed crane cannot enter the rotation overlapping area. According to the utility model, alarm prompt and crane control system locking after the two fixed crane booms enter a rotation overlapping area are realized, major production accidents caused by collision of the two fixed crane booms are prevented, and the device has very important practical significance.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, specifically a fixed crane boom anti-collision system. Background Technology

[0002] Currently, in marine and inland river port terminals where ship loading and unloading operations are conducted, there are many fixed dock cranes or floating barge cranes used for loading and unloading. To fully utilize the dock or barge deck space, multiple fixed dock cranes are typically installed in a row on a single dock, and at least two floating barge cranes are installed on a single barge deck. These fixed cranes are usually installed close together, resulting in overlapping areas of the crane booms during rotation. Figure 2 As shown, when two fixed cranes are loading and unloading simultaneously, and the booms of the two fixed cranes rotate into the overlapping area of ​​the two crane booms at the same time, the operators of the two fixed cranes must be highly focused. Once an operational error occurs, it will cause the booms of the two fixed cranes to collide and cause a major production accident, which needs to be improved. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a fixed crane boom anti-collision system. This system can realize alarm prompts and crane control system lockout when two fixed crane booms enter the slewing overlap area, so as to prevent the two fixed crane booms from colliding and causing major production accidents. It has great practical significance and can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a fixed crane boom anti-collision system, wherein any two adjacent fixed cranes are equipped with limit switches, electronic compasses, angle sensors, PLC controllers, alarms, and touch screens;

[0005] The limit switch is provided in two sets. Both sets of limit switches are installed on the slewing bearing cylinder of the fixed crane, and the fixed base of the fixed crane is provided with two sensing blocks corresponding to the limit switches. The two sets of limit switches correspond to the two ends of the slewing overlap area of ​​the two fixed cranes, respectively, and are used to detect when the boom of the fixed crane enters or leaves the slewing overlap area during slewing.

[0006] The electronic compass is installed on the top of the operator's cab of the fixed crane to detect the slewing angle of the fixed crane and to determine whether the boom of the fixed crane has entered the slewing overlap area.

[0007] The angle sensor is installed on the boom rotation axis of the fixed crane to detect the pitch angle of the fixed crane boom during loading and unloading operations.

[0008] The PLC controller collects and processes signals from limit switches, electronic compasses, and angle sensors. When the boom of the fixed crane enters the slewing overlap area, the PLC controller controls the alarm to sound and displays the output on the touch screen.

[0009] Preferably, an interlock signal line is provided between the PLC controllers of any two adjacent fixed cranes. When the boom of any fixed crane enters the slewing overlap area, the PLC controller of the fixed crane sends a locking signal to the PLC controller of the adjacent fixed crane through the interlock signal line, so that the boom of the adjacent fixed crane is not allowed to enter the slewing overlap area.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: Two sets of limit switches are used to detect the position of the boom entering or leaving the slewing overlap area when the fixed crane rotates; an angle sensor is used to detect the boom's pitch angle during loading and unloading operations; an electronic compass is used to determine whether the fixed crane's boom has entered the slewing overlap area; the PLC controller collects the above signals and performs calculations to comprehensively determine whether a boom collision accident will occur; simultaneously, an interlock signal line is used to send a locking signal to a nearby fixed crane, preventing the nearby fixed crane's boom from rotating into the slewing overlap area, thereby avoiding boom collision accidents when two nearby fixed cranes are operating simultaneously; the system achieves alarm prompts and crane control system interlocking after two fixed crane booms enter the slewing overlap area, preventing major production accidents caused by collisions between the two fixed crane booms, which has significant practical implications. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the fixed crane structure of this utility model;

[0012] Figure 2 This is a top view of two adjacent fixed cranes of this utility model;

[0013] Figure 3 This is a schematic diagram of the system control flow of this utility model.

[0014] In the diagram: 1 Limit switch, 2 Electronic compass, 3 Angle sensor. Detailed Implementation

[0015] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation.

[0016] Please see Figure 1-3 This utility model provides a technical solution: a fixed crane boom anti-collision system, wherein any two adjacent fixed cranes are equipped with limit switches 1, electronic compasses 2, angle sensors 3, PLC controllers, alarms and touch screens;

[0017] The limit switch 1 is provided in two sets. Both sets of limit switches 1 are installed on the slewing bearing cylinder of the fixed crane, and the fixed base of the fixed crane is provided with two sensing blocks corresponding to the limit switch 1. The two sets of limit switches 1 correspond to the two ends of the slewing overlap area of ​​the two fixed cranes, and are used to detect the boom entering or leaving the slewing overlap area when the fixed crane rotates.

[0018] Electronic compass 2 is installed on the top of the operator's cab of the stationary crane to detect the slewing angle of the stationary crane and to determine whether the boom of the stationary crane has entered the slewing overlap area.

[0019] Angle sensor 3 is installed on the boom rotation axis of the fixed crane to detect the pitch angle of the boom of the fixed crane during loading and unloading operations;

[0020] The PLC controller collects and processes signals from limit switch 1, electronic compass 2, and angle sensor 3. When the boom of the fixed crane enters the slewing overlap area, the PLC controller controls the alarm to sound an alarm and displays the output on the touch screen. The control method is the existing technology, which realizes the alarm prompt when the booms of two fixed cranes enter the slewing overlap area, reminding the operators of this fixed crane and the adjacent fixed crane to pay attention and operate with caution.

[0021] Furthermore, an interlock signal line is installed between the PLC controllers of any two adjacent fixed cranes. When the boom of any one of the fixed cranes enters the slewing overlap area, the PLC controller of that fixed crane sends a lock signal to the PLC controller of the adjacent fixed crane through the interlock signal line, preventing the boom of the adjacent fixed crane from entering the slewing overlap area. Only after the boom of the current fixed crane has slew away from the slewing overlap area can the boom of the adjacent fixed crane slew into the slewing overlap area. This avoids the occurrence of boom collision accidents when two adjacent fixed cranes are operating at the same time, which has important practical significance for improving safe production.

[0022] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to include all changes that fall within the meaning and scope of equivalents in the content of this utility model.

Claims

1. A fixed crane boom anti-collision system, characterized in that: Any two adjacent fixed cranes are equipped with limit switches (1), electronic compasses (2), angle sensors (3), PLC controllers, alarms and touch screens; The limit switch (1) is provided in two sets. Both sets of limit switches (1) are installed on the slewing bearing cylinder of the fixed crane, and the fixed base of the fixed crane is provided with two sensing blocks corresponding to the limit switch (1). The two sets of limit switches (1) correspond to the two ends of the slewing overlap area of ​​the two fixed cranes respectively, and are used to detect the boom entering and leaving the slewing overlap area when the fixed crane rotates. The electronic compass (2) is installed on the top of the driver's cab of the fixed crane to detect the slewing angle of the fixed crane and to determine whether the boom of the fixed crane has entered the slewing overlap area. The angle sensor (3) is installed on the boom rotation shaft of the fixed crane to detect the pitch angle of the boom of the fixed crane during loading and unloading operations. The PLC controller collects and processes signals from the limit switch (1), electronic compass (2), and angle sensor (3). When the boom of the fixed crane enters the slewing overlap area, the PLC controller controls the alarm to sound an alarm and displays the output on the touch screen.

2. The fixed crane boom anti-collision system according to claim 1, characterized in that: An interlock signal line is also provided between the PLC controllers of any two adjacent fixed cranes. When the boom of any fixed crane enters the slewing overlap area, the PLC controller of the fixed crane sends a lock signal to the PLC controller of the adjacent fixed crane through the interlock signal line, so that the boom of the adjacent fixed crane is not allowed to enter the slewing overlap area.

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