A crane hoisting area safety protection linkage system

Abstract

The utility model provides a kind of crane hoisting area safety protection linkage system, it is related to crane hoisting area below safety protection technical field, including electric hoist, further include the PLC of fixedly arranged on electric hoist, laser radar sensor, camera, mechanical arm, projection lamp, radar inductor, timer and water spraying equipment;The present application can be in the process that crane carries out multi-machine linkage hoisting transfer to the below hoisting area Real-time safety monitoring, once the situation that construction personnel suddenly appears below hoisting area, it is detected quickly and construction personnel is driven at this moment, and then significantly reduce the personal safety hazard in the process of crane hoisting.

Description

Technical Field

[0001] This utility model relates to the field of safety protection technology below the lifting area of ​​a crane, and more specifically, to a safety protection linkage system for the lifting area of ​​a crane. Background Technology

[0002] Cranes, also known as overhead cranes, gantry cranes, or hoists, are lifting equipment that operates intermittently. This means that in a work cycle, the mechanisms for picking up, moving, and unloading materials work alternately. Cranes are becoming increasingly widespread in the market.

[0003] Currently, during the lifting and transfer of workpieces by cranes, it is easy for construction workers to suddenly appear below the trajectory of the heavy object. At this time, it is not possible to quickly remind the construction workers to move away from the area below the lifting area. If the construction workers do not notice, there will be a significant personal safety hazard. Therefore, the safety monitoring and protection measures under the crane lifting area need to be improved. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art, and then to propose a safety protection linkage system for crane hoisting areas.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A safety protection linkage system for crane hoisting areas includes an electric hoist, and also includes a PLC, a lidar sensor, a camera, a robotic arm, a projector, a radar sensor, a timer, and a water spray device fixed on the electric hoist.

[0007] A lidar sensor is used to scan the outline of a heavy object suspended on an electric hoist and feed the results back to the PLC;

[0008] The camera is used to capture real-time footage of the hoisting operation;

[0009] The robotic arm is connected to the projector lamp. The PLC controls the projector lamp to adjust the projection ratio so that the size of the projection area matches the area of ​​the suspended object. The robotic arm drives the projector lamp to move and project onto the ground below the suspended object.

[0010] When the radar sensor detects that someone is lingering in the projection area and has not moved away after the timer has been set for a certain period of time, the PLC controls the water spraying equipment to spray water in the projection area to drive the person away.

[0011] Furthermore, it also includes an audible and visual alarm that is fixed in the crane cab and electrically connected to the PLC.

[0012] Furthermore, the detection range of the radar sensor is a circular area with a radius of 3-4 meters centered on the projection area.

[0013] Furthermore, there are multiple electric hoists, and multiple electric hoists are used in conjunction with multiple cranes to lift heavy objects.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] Compared to existing technologies, this application can perform real-time safety monitoring below the hoisting area during the multi-machine linkage hoisting and transfer of heavy objects by a crane. If construction personnel suddenly appear below the hoisting area, the system can quickly detect and drive them away, thereby significantly reducing personal safety hazards during crane hoisting. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure label:

[0018] 1. PLC; 2. LiDAR sensor; 3. Camera; 4. Robotic arm; 5. Projector lamp; 6. Radar sensor; 7. Timer; 8. Sprinkler system; 9. Audible and visual alarm. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0020] like Figure 1 As shown, a safety protection linkage system for crane lifting areas includes multiple electric hoists (multiple electric hoists are linked by multiple cranes to lift heavy objects), and also includes a PLC1, a laser radar sensor 2, a camera 3, a robotic arm 4, a projection light 5, a radar sensor 6, a timer 7, and a water spray device 8, all fixed to the electric hoists.

[0021] The lidar sensor 2 is used to scan the outline of the heavy object suspended on the electric hoist and feed the result back to the PLC1 (specifically, the lidar sensor 2 performs fixed-point scanning).

[0022] Camera 3 is used to capture real-time footage of the hoisting operation;

[0023] The robotic arm 4 is connected to the projection lamp 5. The PLC1 controls the projection lamp 5 to adjust the projection ratio so that the size of the projection area is adapted to the area of ​​the hoisted object. The robotic arm 4 drives the projection lamp 5 to move and project onto the ground below the hoisted object (specifically, the robotic arm 4 is installed on the crane, close to the electric hoist, so that the movement of the projection lamp 5 can be controlled more flexibly).

[0024] When radar sensor 6 detects that someone is lingering in the projection area and has not moved away after the timer 7 has been set for a certain period of time, PLC 1 controls water spray device 8 to spray water in the projection area to drive the person away.

[0025] To quickly alert the workers in the crane cab that construction workers are present below the hoisting area, a further refinement of the above embodiment includes an audible and visual alarm 9 fixed in the crane cab and electrically connected to the PLC1.

[0026] In a further optimization of the embodiment of this utility model, the detection range of the radar sensor 6 is a circular area with a radius of 3-4 meters centered on the projection area.

[0027] In a further refinement of the embodiment of this utility model, the lidar sensor 2 is installed on the top of the electric hoist, and the radar sensor 6 and the camera 3 are installed on the side or below the electric hoist, so as to be as close as possible to the projection area to ensure the accuracy of detection.

[0028] The working process of this utility model is as follows:

[0029] After multiple cranes and multiple electric hoists have lifted the heavy object, the lidar sensor 2 starts to work at a fixed point to scan the heavy object, obtain the outline information of the heavy object, and feed this information back to the PLC1.

[0030] Based on the received information, PLC1 controls the projection lamp 5 to adjust the projection ratio, thereby accurately adapting the size of the projection area to the area of ​​the suspended object. During this process, camera 3 can capture the suspended object in real time, while robotic arm 4 moves the projection lamp 5 to accurately project the projection area onto the ground below the suspended object.

[0031] As the heavy object is hoisted and moved by the electric hoist, the projection area also moves. During this time, radar sensor 6 constantly senses whether anyone enters the projection area. Once radar sensor 6 detects someone in the projection area, and this person has not left for more than the timer 7 preset time (0.5-1s), PLC 1 will immediately control water spray device 8 to spray water on the projection area to quickly drive the person away from the projection area, thus ensuring the safety of the hoisting process.

[0032] In the process of implementing safety protection linkage control in the hoisting area, in order to ensure the normal operation of the above-mentioned equipment and data transmission, and to optimize the scheme, this application uses cable trays or conduits to organize the lines and separate different types of lines, such as separating power lines and signal lines, and separating high-voltage and low-voltage lines. This can reduce electromagnetic interference. Then, at the connection of the lines, some waterproof and dustproof connectors are used to avoid poor contact of the lines due to environmental factors.

[0033] At the same time, for some devices that are susceptible to interference, such as radar sensor 6 and camera 3, shielding wires are added to them to further enhance their anti-interference capabilities.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A safety protection linkage system for crane hoisting areas, comprising an electric hoist, characterized in that, It also includes a PLC (1) fixed to the electric hoist, a lidar sensor (2), a camera (3), a robotic arm (4), a projection lamp (5), a radar sensor (6), a timer (7), and a water spraying device (8). A lidar sensor (2) is used to scan the outline of a heavy object suspended on an electric hoist and feed the result back to the PLC (1); Camera (3) is used to capture real-time images of the hoisting process; The robotic arm (4) is connected to the projection lamp (5). The PLC (1) controls the projection lamp (5) to adjust the projection ratio so that the size of the projection area matches the area of ​​the hoisted object. The robotic arm (4) drives the projection lamp (5) to move and project onto the ground below the hoisted object. When the radar sensor (6) detects that someone is staying in the projection area and has not moved away after the timer (7) has been set for a certain period of time, the PLC (1) controls the water spraying device (8) to spray water in the projection area to drive the person away.

2. The safety protection linkage system for crane hoisting areas according to claim 1, characterized in that, It also includes an audible and visual alarm (9) that is fixed in the crane cab and electrically connected to the PLC (1).

3. The safety protection linkage system for crane hoisting areas according to claim 1, characterized in that, The detection range of the radar sensor (6) is a circular area with a radius of 3-4 meters centered on the projection area.

4. The safety protection linkage system for crane hoisting areas according to claim 1, characterized in that, The electric hoists are multiple, and multiple electric hoists are used in conjunction with multiple cranes to lift heavy objects.

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