Safety system of port gantry crane

Abstract

The utility model relates to a safety system of a port gantry crane, which comprises a human-computer interface assembly, a track distance measuring instrument, a control center electrical box, a plurality of tilt angle sensors, a revolution angle sampling instrument and a wireless communication module, the tilt angle sensors are installed on arm frames of a crane, the rotation angle sampling instrument is installed on a flange on one side of a rotation gear of the crane, a sampling gear in the rotation angle sampling instrument is meshed with the rotation gear, the track distance measuring instrument is installed on one side of a crane cart, and a distance measuring wheel in the track distance measuring instrument is in contact with a crane cart lifting wheel. The wireless communication module is installed on the top of the crane. The anti-collision device is used for solving the problems that arm rods between portal cranes collide with each other and even collide with a ship building of a cargo ship, and therefore serious accidents and huge economic losses are caused.

Description

TECHNICAL FIELD

[0001] The utility model relates to port portal crane safety system. BACKGROUND

[0002] In busy port bulk cargo operation, the door machine is indispensable key equipment. Especially when facing large cargo ship, multiple door machines usually will cooperate to improve the efficiency. However, in the process of hoisting and rotating, due to the blind area of door machine sight, the overlapping of door machine arm rod activity space, this brings potential risk. If the operator is negligent in operation, misoperation or due to limited sight, it can cause the arm rod collision between door machines, even with the collision of the ship's hull of cargo ship, thereby causing serious accident and huge economic loss. SUMMARY

[0003] The utility model discloses a port portal crane safety system, which solves the problem of arm rod collision between door machines, even with the collision of the ship's hull of cargo ship, thereby causing serious accident and huge economic loss.

[0004] In order to solve the above problem, the technical scheme of the utility model is:

[0005] The port portal crane safety system comprises a man-machine interface assembly, a track range finder, a control center electrical box, a tilt angle sensor, a rotation angle sampling instrument and a wireless communication module, the man-machine interface assembly and the control center electrical box are installed in the crane cab, the tilt angle sensor has a plurality of tilt angle sensors, each tilt angle sensor is installed on each arm support of the crane, the rotation angle sampling instrument is installed on the flange on one side of the crane rotary gear, the sampling gear in the rotation angle sampling instrument is engaged with the rotary gear, the track range finder is installed on one side of the crane trolley, the ranging wheel in the track range finder is in contact with the crane trolley hoisting wheel, the wireless communication module is installed on the top of the crane, the tilt angle sensor, the rotation angle sampling instrument and the track range finder are respectively connected to the control center electrical box through wires, and the control center electrical box is connected to the man-machine interface assembly, the wireless communication module and the door machine monitoring system through wires.

[0006] The wireless communication module is connected with at least two omnidirectional antennas, and the distance between the two omnidirectional antennas in the horizontal direction is 5-10 meters.

[0007] It also comprises a plurality of cameras arranged on the elephant nose beam, the cab, each door leg, the cable reel, the machine room and the electrical room of the crane, each camera is connected to the crane concentrator through a video connector, the crane concentrator is connected to a monitor arranged in the cab, the switch in the concentrator is connected to a central control building top receiving base station through the wireless communication module, and the central control building top receiving base station is connected to the machine room through a cable.

[0008] The camera installed on the elephant nose beam is provided with a holder.

[0009] The utility model discloses the beneficial effect that:

[0010] 1, video monitoring equipment adopts network camera, and the camera passes through comprehensive cable and gathers signal to the driver room, and after vehicle-mounted network controller, the image is shown on the driver room indoor display, and the driver can observe the situation of the work area at any time, improves the safe production coefficient and improves the work efficiency.

[0011] 2, for when the arm pole of two adjacent door machines works, the risk early warning of collision occurs, and intelligent anti -collision system determines the planar position of the machine and the adjacent machine and the distance of the head of the adjacent machine arm pole and the arm pole of the machine according to the current center distance of the machine and the adjacent machine, the current amplitude of the machine / the adjacent machine, the rotation angle data, thereby realizing the obstacle ranging and anti -collision function.

[0012] 3, anti -collision video linkage: video monitoring system can automatically switch corresponding video according to the alarm signal output by the anti -collision system, and does not need artificial control, and the specific linkage is as follows:

[0013] A when two door machine arm frame safety distance early warning, video display picture automatically switches to arm frame head camera;

[0014] B when walking safety distance early warning, video automatically switches to door leg camera;

[0015] C reserve corresponding interface, and the system can set multiple groups of work scene automatic switching according to user requirement subsequently. DRAWINGS

[0016] The utility model makes further explanation as follows in combination with the drawings:

[0017] Fig. 1 It is the structural schematic diagram of the utility model,

[0018] Fig. 2 It is the connection schematic diagram of each electrical device in the utility model,

[0019] Fig. 3 It is the connection schematic diagram of each electrical device in the utility model,

[0020] Fig. 4 It is the system block diagram of camera in the utility model,

[0021] Fig. 5 It is the network topology diagram of camera in the utility model.

[0022] In the drawing: crane 1, wireless communication module 2, camera 3, man-machine interface assembly 4, rotation angle sampler 5, track range finder 6, inclination sensor 7, control center electrical box 8. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figs. 1 to 5 As shown, the safety system of the port gantry crane includes a human-machine interface assembly 4, a track distance meter 6, a control center electrical box 8, a tilt sensor 7, a rotation angle sampler 5 and a wireless communication module 2. The human-machine interface assembly 4 and the control center electrical box 8 are installed in the cab of the crane 1. There are two tilt sensors 7, which are installed on the large and small booms of the crane 1. The rotation angle sampler 5 is installed on the flange on one side of the slewing gear of the crane 1. The sampling gear in the rotation angle sampler 5 is engaged with the slewing gear. The track distance meter 6 is installed on one side of the crane 1 trolley. The measuring wheel in the track distance meter 6 is in contact with the lifting wheel of the crane 1 trolley. The wireless communication module 2 is installed on the top of the crane 1. The tilt sensor 7, the rotation angle sampler and the track distance meter 6 are respectively connected to the control center electrical box 8 through wires. The control center electrical box 8 is connected to the human-machine interface assembly 4, the wireless communication module 2 and the gantry crane monitoring system through wires.

[0025] The control center electrical box 8 uses HJFZ-FZZJ, AC220V, 8 groups of RS485 communication interface electrical box; the guide rail distance meter uses HJFZ-FZZJ, repeatability ±5%, DC24V, RS485 communication interface, MODBUS communication protocol; the rotation angle sampler 5 uses HJFZ-HZQY, RS485 communication interface, MODBUS communication protocol; the inclination sensor 7 uses HJFZ-QJCG, 0.1° maximum accuracy, 0.01° resolution, ±180° range, RS485 communication interface, MODBUS communication protocol; the human-machine interface assembly 4 uses HJFZ-RJJM, 7 inches, 16.77 million color LCD display, four-wire resistive touch screen, RS485 communication interface.

[0026] The human-machine interface assembly 4 is used for distance display and anti-collision pre-alarm; the track distance meter 6 is used to accurately measure the distance between the trolleys; the control center electrical box 8 is the core processing unit of the system; the inclination sensor 7 is used to detect the inclination angle of the crane 1 boom; the rotation angle sampler 5 is responsible for data feedback and positioning; the wireless communication module 2 is used to provide wireless communication capabilities between the equipment of each crane 1.

[0027] In addition, since the guide rail range finder is mounted on the walking mechanism of the crane 1, when it is connected with the control center electric box 8 in the cab by wire, four terminals of the center slip ring need to be connected.

[0028] The inclination sensor 7 and the rotation angle sampler 5 transmit the measured arm angle signal and rotation angle signal to the control center through the RS-485 bus, and exchange information with the control center.

[0029] The instrument main machine reads the data of the peripheral devices, calculates the left and right vehicle distance and the left and right arm distance, and displays them on the screen. At the same time, according to the set rated working / protective parameters, real-time monitoring and protection are carried out, and when in an unsafe operating state or meeting the control action conditions, corresponding sound warning pre-warning, alarm and action protection and switch action are given to cut off the lifting and corresponding dangerous operation, so as to achieve the effect of safety protection.

[0030] The wireless communication module 2 is responsible for communication between the two adjacent cranes, obtains the state of the adjacent crane, and sends its own state to the adjacent crane. Through the operation of these data, the shoulder distance of the two cranes is judged.

[0031] The wireless communication module 2 is connected with at least two omnidirectional antennas, and the horizontal distance between the two omnidirectional antennas is 5-10 meters. In the construction of the port, it is often necessary to lay cables in a large area, and the environment layout is complex, the operation area does not allow to erect a line, and other situations interfere with the realization of the background monitoring, therefore, it is very practical and effective to use the wireless network transmission system to build the underlying communication platform.

[0032] In addition, since the crane center slip ring rotates 360 degrees above the position, considering the blocking situation, we will use two omnidirectional antennas, one left and one right, installed with a horizontal distance of 5-10 meters, which can ensure that the crane always has one antenna in communication with the receiving end during the 360-degree rotation, and can guarantee the capacity communication of the wireless link. Considering the transformation of electromagnetic waves in the process of mobile communication and the excessive complex structure of steel, the 5.8GHz 866M device series is selected to adopt point-to-point transmission mode to realize wireless transmission of the video monitoring system.

[0033] The wireless transmitting base station and the antenna connected with the wireless communication module 2 are installed on the top rail of the machine room, and the horizontal distance between the two omnidirectional antennas is 10 meters apart to ensure that there is always an antenna in communication during the rotation of the crane 1. The receiving base station and the antenna are installed on the nearby lamp pole, and then transmitted to the terminal control room through the optical fiber under the lamp pole.

[0034] Also included are a plurality of cameras 3 respectively arranged on the elephant trunk, the cab, each door leg, the cable reel, the machine room and the electrical room of the crane 1, each camera 3 is connected with the crane 1 collector through a video connector, the crane 1 collector is connected with a monitor arranged in the cab, the switch in the collector is connected with the central control building top receiving base station through the wireless communication module 2, the central control building top receiving base station is connected with the machine room through a cable. The camera 3 arranged on the elephant trunk is provided with a cloud platform. The camera 3 arranged on the elephant trunk of the crane is used for monitoring the spreaders and the working conditions in the cabin; the camera 3 arranged in the cab is used for monitoring the working conditions of the driver; the camera 3 arranged on each door leg is used for monitoring the conditions on the track when the trolley is running; the camera 3 arranged on the cable reel is used for monitoring the working conditions of the cable reel; and the cameras 3 arranged on the machine room and the electrical room are used for monitoring the conditions in the machine room and the electrical room.

[0035] The content described in the embodiments of the present specification is only a list of implementation forms of the utility model concept, and the protection scope of the utility model should not be regarded as being limited to the specific forms stated in the embodiments, and the protection scope of the utility model also extends to the equivalent technical means that can be thought of by those skilled in the art according to the utility model concept.

Claims

1. Port gantry crane safety system, characterized by: The invention comprises a human-machine interface assembly (4), a track distance meter (6), a control center electrical box (8), an inclination sensor (7), a rotation angle sampler (5) and a wireless communication module (2), wherein the human-machine interface assembly (4) and the control center electrical box (8) are installed in a cab of a crane (1), a plurality of inclination sensors (7) are provided, each of which is installed on each boom of the crane (1), and the rotation angle sampler (5) is installed on a flange on one side of a rotation gear of the crane (1). The sampling gear is meshed with the rotary gear, the track distance meter (6) is installed on one side of the crane (1) trolley, the measuring wheel in the track distance meter (6) is in contact with the hoisting wheel of the crane (1) trolley, the wireless communication module (2) is installed on the top of the crane (1), the inclination sensor (7), the rotary angle sampler (5) and the track distance meter (6) are respectively connected to the control center electrical box (8) through wires, and the control center electrical box (8) is connected to the human-machine interface assembly (4), the wireless communication module (2) and the monitoring system through wires.

2. The port portal crane safety system according to claim 1, characterized in that: The wireless communication module (2) is connected to at least two omnidirectional antennas, and the horizontal distance between the two omnidirectional antennas is 5 to 10 meters.

3. The port portal crane safety system according to claim 1, characterized in that: The invention also includes a plurality of cameras (3) respectively arranged on the crane (1) trunk, the cab, the door legs, the cable reel, the machine room and the electrical room. Each camera (3) is connected to the crane (1) concentrator through a video connector. The crane (1) concentrator is connected to a monitor arranged in the cab. The switch in the concentrator is connected to the central control building rooftop receiving base station through a wireless communication module (2). The central control building rooftop receiving base station is connected to the machine room through a cable.

4. The port portal crane safety system according to claim 3, characterized in that: The camera (3) mounted on the trunk is provided with a pan-tilt system.

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