CN216512489U

CN216512489U - Crane collision avoidance system

Info

Publication number: CN216512489U
Application number: CN202122775849.4U
Authority: CN
Inventors: 陈光岩; 李树国; 于海媛; 李树林; 葛姗姗; 周志政; 赵洪涛; 徐浩楠; 张鹏; 孙治国; 于浩洋
Original assignee: Shenyang Weisa Hoisting Equipment Co ltd
Current assignee: Shenyang Weisa Hoisting Equipment Co ltd
Priority date: 2021-11-14
Filing date: 2021-11-14
Publication date: 2022-05-13
Anticipated expiration: 2031-11-14

Abstract

The utility model discloses a crane anti-collision system, which comprises a PLC (programmable logic controller), anti-collision sensors, a switching power supply, an output relay and an audible and visual alarm, wherein the anti-collision sensors are arranged on end beams at two sides of a crane cart, and the signal output ends of the anti-collision sensors are in signal connection with the signal input ends of the PLC; the signal output end of the PLC is electrically connected with an output relay, the output relay is electrically connected with an audible and visual alarm, and the output relay is also electrically connected with a crane cart mechanism control loop; the switch power supply is respectively electrically connected with the PLC and the anti-collision sensor, and adopts a wide voltage switch power supply with input AC of 200-500V and output DC of 24V. The utility model realizes real-time detection of obstacles in the crane cart running area, controls the crane to stop running in the corresponding direction, and triggers the audible and visual alarm to give audible and visual alarm, thereby realizing early warning and avoiding safety accidents in the crane operation process.

Description

Crane collision avoidance system

Technical Field

The utility model belongs to the technical field of electrical control circuits of cranes, and particularly relates to a crane anti-collision system which is particularly suitable for early warning of collision between a cart running mechanism of a general gantry crane and other objects and preventing collision accidents.

Background

The cart track of the general portal crane is on the ground, and the cart running mechanism collides with production personnel and other running equipment sometimes, so that personal safety and equipment safety are greatly endangered, and the generated result is very serious. Therefore, there is an urgent need to develop a control system capable of preventing the crane cart running mechanism from colliding with other objects.

Disclosure of Invention

The utility model aims at the problems, overcomes the defects of the prior art, and provides the crane anti-collision system which can prevent the crane cart running mechanism from colliding with other objects and avoid safety accidents in the crane operation process.

In order to achieve the purpose, the utility model adopts the following technical scheme.

The utility model discloses a crane anti-collision system, which is characterized in that: the anti-collision system comprises a PLC (programmable logic controller), anti-collision sensors, a switching power supply, an output relay and an audible and visual alarm, wherein the anti-collision sensors are arranged on end beams on two sides of a crane cart, and signal output ends of the anti-collision sensors are in signal connection with signal input ends of the PLC; the signal output end of the PLC is electrically connected with an output relay, the output relay is electrically connected with an audible and visual alarm, and the output relay is also electrically connected with a crane cart mechanism control loop; the switch power supply is respectively and electrically connected with the PLC and the anti-collision sensor, and adopts a wide voltage switch power supply with input AC of 200-500V and output DC of 24V.

As a preferable scheme of the utility model, the PLC programmable controller adopts Siemens series PLC with the model number of SIMATIC S7-200 SMART.

As another preferable scheme of the utility model, the collision avoidance sensors are laser sensors, the number of the laser sensors is four, one laser sensor is fixedly mounted on each of the end portions of the two side end beams of the cart positioned in the forward direction of the cart, and one laser sensor is fixedly mounted on each of the end portions of the two side end beams of the cart positioned in the backward direction of the cart.

Furthermore, the laser sensor is of a diffuse reflection type, and the detection distance of the diffuse reflection type laser sensor is 5 mm-12000 mm.

As another preferable scheme of the utility model, the signal input end of the PLC programmable controller is further connected with a multifunctional control button through a signal, and the multifunctional control button is mounted on a remote controller or a handle of the remote controller for controlling the crane cart to travel.

As another preferable scheme of the utility model, the audible and visual alarm is mounted on a crane girder mechanism.

As another preferable scheme of the utility model, the switching power supply, the PLC programmable controller and the output relay are arranged and installed in an electric cabinet.

The utility model has the beneficial effects.

The utility model provides a crane anti-collision system which comprises a PLC (programmable logic controller), an anti-collision sensor, a switching power supply, an output relay and an audible and visual alarm, wherein the anti-collision sensor adopts a laser sensor, the real-time detection of an obstacle in a crane cart running area is realized through the laser sensor, when the obstacle to be collided is detected, the PLC and the output relay control a crane to stop running in the corresponding direction, and the audible and visual alarm is triggered to send out audible and visual alarm, so that early warning is realized, surrounding production personnel and operating equipment operators are reminded and informed, and the occurrence of safety accidents in the crane operation process is avoided.

Drawings

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.

Fig. 1 is a schematic block diagram of a circuit structure of a crane collision avoidance system of the present invention.

Fig. 2 is an electrical schematic wiring diagram between a PLC programmable controller and a switching power supply of the crane collision avoidance system of the present invention.

Fig. 3 is an electrical schematic wiring diagram between the signal input end of the PLC programmable controller of the crane collision avoidance system and the laser sensor and the multifunctional control button.

Fig. 4 is a schematic diagram of the arrangement and installation structure of the laser sensor of the crane collision avoidance system.

The labels in the figure are: 1 is an end beam; 2 is the backward direction of the cart; 3 is the advancing direction of the cart; 4 is a laser sensor; 5 is a multifunctional control button; 6 is a PLC programmable controller; 7 is a switch power supply; 8 is an audible and visual alarm; 9 is an output relay; 10 is a crane cart mechanism control loop; and 11 is a signal input end.

Detailed Description

With reference to the attached drawings 1 to 4, the crane collision avoidance system comprises a PLC (programmable logic controller) 6, collision avoidance sensors, a switching power supply 7, an output relay 9 and an audible and visual alarm 8, wherein the collision avoidance sensors are arranged on end beams 1 at two sides of a crane cart, and the signal output ends of the collision avoidance sensors are in signal connection with a signal input end 11 of the PLC 6; the signal output end of the PLC 6 is electrically connected with an output relay 9, the output relay 9 is electrically connected with an audible and visual alarm 8, and the output relay 9 is also electrically connected with a crane cart mechanism control loop 10; the switch power supply 7 is respectively and electrically connected with the PLC 6 and the anti-collision sensor, and the switch power supply 7 adopts a wide-voltage switch power supply with input AC of 200-500V and output DC of 24V; the anti-collision sensor adopts a laser sensor 4, and the PLC adopts Siemens series PLC with the model number of SIMATIC S7-200 SMART.

As shown in fig. 4, the arrangement and installation structure of the laser sensors 4 is schematically illustrated, four laser sensors 4 are provided, one laser sensor 4 is fixedly installed on each end of the end beam 1 on both sides of the cart in the forward direction 3 of the cart, and one laser sensor 4 is fixedly installed on each end of the end beam 1 on both sides of the cart in the backward direction 2 of the cart; the laser sensor 4 is of a diffuse reflection type, and the detection distance of the diffuse reflection type laser sensor 4 is 5 mm-12000 mm.

The signal input end 11 of the PLC 6 is also in signal connection with a multifunctional control button 5, and the multifunctional control button 5 is arranged on a remote controller or a remote controller handle for controlling the crane cart to advance; the audible and visual alarm 8 is mounted on the crane main beam mechanism, and the audible and visual alarm 8 is mounted on the crane main beam mechanism at a high position, so that the early warning and prompting effect is good; the switching power supply 7, the PLC 6 and the output relay 9 are arranged and installed in an electric cabinet, and the control signal output end of the output relay 9 in the electric cabinet is electrically connected with a crane cart mechanism control loop 10.

Specifically, the present invention uses the PLC programmable controller 6 as a core processor. The PLC 6 carries out logic processing on the anti-collision signal, the anti-collision signal is obtained by collecting and detecting through an anti-collision sensor, the anti-collision sensor can detect an obstacle about to collide with the crane cart, and the obstacle about to collide is detected as the anti-collision signal; the anti-collision sensor adopts a laser sensor 4, the laser sensor 4 is of a diffuse reflection type, the detection distance of the diffuse reflection type laser sensor 4 is 5-12000 mm, various objects in the crane cart running area can be detected, and the detection distance of the anti-collision sensor can be set according to the field requirement. The PLC 6 carries out logic processing on the switching value control signal output by the multifunctional control button 5, the multifunctional control button 5 is installed on a remote controller or a remote controller handle for controlling the crane cart to advance, and the multifunctional control button 5 has the functions of eliminating alarm sound and shielding anti-collision function switching. The output relay 9 of the crane anti-collision system is electrically connected with a crane cart mechanism control loop 10, when the laser sensor 4 detects an object about to collide with the crane cart, the object is immediately sent to the PLC 6, the PLC 6 carries out logic processing, a control signal is output to the output relay 9, the output relay 9 triggers the audible and visual alarm 8 to send out an audible and visual alarm signal, namely, early warning and reminding before collision are realized, and the output relay 9 immediately controls and stops the operation of the cart advancing direction 3 or the cart retreating direction 2.

When the crane needs to be kept in a static state with the barrier for a long time, the multifunctional control button 5 can be pressed once, the function of eliminating the alarm sound is effective, the acousto-optic alarm is not output, but the anti-collision function is normally used. When the crane and other hoisting equipment need to work cooperatively, the multifunctional control button 5 is pressed again, the anti-collision function is shielded, and the sound-light alarm action on the crane is output to indicate the state of an operator. The function of eliminating the alarm sound and the function of shielding and preventing collision can be cancelled after the crane is turned off or the multifunctional control button 5 is pressed for the third time.

It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the utility model.

Claims

1. A crane collision avoidance system, its characterized in that: the anti-collision system comprises a PLC (programmable logic controller), anti-collision sensors, a switching power supply, an output relay and an audible and visual alarm, wherein the anti-collision sensors are arranged on end beams on two sides of a crane cart, and signal output ends of the anti-collision sensors are in signal connection with signal input ends of the PLC; the signal output end of the PLC is electrically connected with an output relay, the output relay is electrically connected with an audible and visual alarm, and the output relay is also electrically connected with a crane cart mechanism control loop; the switch power supply is respectively and electrically connected with the PLC and the anti-collision sensor, and adopts a wide voltage switch power supply with input AC of 200-500V and output DC of 24V.

2. A crane collision avoidance system according to claim 1, wherein: the PLC adopts Siemens series PLC with the model number of SIMATIC S7-200 SMART.

3. A crane collision avoidance system according to claim 1, wherein: the anti-collision sensors are laser sensors, the number of the laser sensors is four, the laser sensors are fixedly mounted on the end portions of the end beams on the two sides of the cart in the advancing direction of the cart respectively, and the laser sensors are fixedly mounted on the end portions of the end beams on the two sides of the cart in the retreating direction of the cart respectively.

4. A crane collision avoidance system according to claim 3, wherein: the laser sensor is of a diffuse reflection type, and the detection distance of the diffuse reflection type laser sensor is 5 mm-12000 mm.

5. A crane collision avoidance system according to claim 1, wherein: the signal input end of the PLC is further connected with a multifunctional control button through signals, and the multifunctional control button is installed on a remote controller or a handle of the remote controller for controlling the crane cart to advance.

6. A crane collision avoidance system according to claim 1, wherein: and the audible and visual alarm is arranged on the crane main beam mechanism.

7. A crane collision avoidance system according to claim 1, wherein: the switching power supply, the PLC and the output relay are arranged and installed in an electric cabinet.