CN216512489U - A crane anti-collision system - Google Patents

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

A crane anti-collision system

technical field

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

Background technique

The cart track of the universal gantry crane is on the ground, and the cart running mechanism collides with the production personnel and other operating equipment from time to time. As a result, personal safety and equipment safety are greatly threatened, and the consequences are very serious. Therefore, there is an urgent need to develop a control system that can prevent the collision between the crane trolley running mechanism and other objects.

SUMMARY OF THE INVENTION

The utility model is aimed at the above problems, makes up for the deficiencies of the prior art, and provides a crane anti-collision system, which can prevent the crane trolley running mechanism from colliding with other objects and avoid the occurrence of safety accidents during the crane operation.

To achieve the above purpose, the present invention adopts the following technical solutions.

The utility model is an anti-collision system for a crane, which is characterized in that it comprises a PLC programmable controller, an anti-collision sensor, a switching power supply, an output relay, and a sound and light alarm, and the anti-collision sensor is arranged on the end beams on both sides of the crane cart. On the upper side, the signal output end of the anti-collision sensor is signally connected with the signal input end of the PLC programmable controller; the signal output end of the PLC programmable controller is electrically connected with the output relay, and the output relay is electrically connected with the sound and light alarm, and the output The relay is also electrically connected with the control circuit of the crane trolley mechanism; the switching power supply is electrically connected with the PLC programmable controller and the anti-collision sensor respectively, and the switching power supply adopts a wide voltage switching power supply with an input AC 200-500V and an output DC 24V.

As a preferred solution of the present invention, the PLC programmable controller adopts a Siemens series PLC whose model is SIMATIC S7-200 SMART.

As another preferred solution of the present invention, the anti-collision sensor adopts laser sensors, and there are four laser sensors, and one laser sensor is fixedly installed on the ends of the end beams on both sides of the cart located in the forward direction of the cart. , a laser sensor is fixedly installed on the ends of the end beams on both sides of the cart in the backward direction of the cart.

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

As another preferred solution of the present utility model, the signal input end of the PLC programmable controller is also signal-connected with a multi-function control button, and the multi-function control button is installed on the remote control or remote control used to control the traveling of the crane cart. on the handle.

As another preferred solution of the present invention, the sound and light alarm is installed on the main beam mechanism of the crane.

As another preferred solution of the present invention, the switching power supply, PLC programmable controller and output relay are arranged and installed in an electric control box.

The utility model has beneficial effects.

The anti-collision system for a crane provided by the utility model includes a PLC programmable controller, an anti-collision sensor, a switching power supply, an output relay, and an acousto-optic alarm. The anti-collision sensor adopts a laser sensor. Real-time detection of obstacles in the operating area of the crane cart is realized. When the obstacle that is about to collide is detected, the PLC programmable controller and output relay control the crane to stop running in the corresponding direction, and trigger the sound and light alarm to emit sound and light. The alarm realizes early warning to remind the surrounding production personnel and operating equipment operators to avoid the occurrence of safety accidents during the crane operation.

Description of drawings

In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

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

Fig. 2 is the electrical principle wiring diagram between the PLC programmable controller and the switching power supply of a crane anti-collision system of the present invention.

Fig. 3 is the electrical principle wiring diagram between the signal input end of the PLC programmable controller, the laser sensor and the multi-function control button of a crane anti-collision system of the present invention.

4 is a schematic diagram of the arrangement and installation structure of the laser sensor of a crane anti-collision system of the present invention.

Marked in the figure: 1 is the end beam; 2 is the backward direction of the cart; 3 is the forward direction of the cart; 4 is the laser sensor; 5 is the multi-function control button; 6 is the PLC programmable controller; 7 is the switching power supply; 8 is the Sound and light alarm; 9 is the output relay; 10 is the control circuit of the crane cart mechanism; 11 is the signal input end.

Detailed ways

As shown in the accompanying drawings 1 to 4, a crane anti-collision system of the present invention includes a PLC programmable controller 6, an anti-collision sensor, a switching power supply 7, an output relay 9, and a sound and light alarm 8. The anti-collision sensor It is arranged on the end beams 1 on both sides of the crane cart, and the signal output end of the anti-collision sensor is signal-connected with the signal input end 11 of the PLC programmable controller 6; the signal output end of the PLC programmable controller 6 is connected with the output relay 9 Electrically connected, the output relay 9 is electrically connected with the sound and light alarm 8, and the output relay 9 is also electrically connected with the crane cart mechanism control circuit 10; the switching power supply 7 is electrically connected with the PLC programmable controller 6 and the anti-collision sensor, respectively, The switching power supply 7 adopts a wide voltage switching power supply with an input AC 200-500V and an output DC 24V; the anti-collision sensor adopts a laser sensor 4, and the PLC programmable controller adopts a Siemens series PLC with a model of SIMATIC S7-200 SMART.

4 is a schematic diagram of the arrangement and installation structure of the laser sensors 4. There are four laser sensors 4, and one laser sensor 4 is fixedly installed on each end of the end beams 1 on both sides of the cart located in the advancing direction 3 of the cart. A laser sensor 4 is fixedly installed on each end of the end beams 1 on both sides of the cart in the back direction 2 of the cart; the laser sensor 4 is a diffuse reflection type, and the detection distance of the diffuse reflection type laser sensor 4 is 5mm-12000mm.

The signal input end 11 of the PLC programmable controller 6 is also connected with a multi-function control button 5, and the multi-function control button 5 is installed on the remote control or remote control handle used to control the traveling of the crane cart; the sound and light The alarm 8 is installed on the main beam mechanism of the crane, and the sound and light alarm 8 is installed on the main beam mechanism of the crane at a high place, and the warning effect is good; the switching power supply 7, the PLC programmable controller 6, and the output relay 9 are arranged and installed In an electric control box, the control signal output end of the output relay 9 in the electric control box is electrically connected with the control circuit 10 of the crane cart mechanism.

Specifically, the present invention uses the PLC programmable controller 6 as the core processor. The anti-collision signal is logically processed by the PLC programmable controller 6, and the anti-collision signal is collected and detected by the anti-collision sensor. The obstacle is used as an anti-collision signal; the anti-collision sensor adopts a laser sensor 4, the laser sensor 4 is a diffuse reflection type, and the detection distance of the diffuse reflection type laser sensor 4 is 5mm to 12000mm, which can detect the collision in the operation area of the crane. All kinds of objects can be detected, and the detection distance of the anti-collision sensor can be set according to the site requirements. The switch quantity control signal output by the multi-function control button 5 is logically processed by the PLC programmable controller 6. The multi-function control button 5 is installed on the remote control or remote control handle used to control the traveling of the crane cart. The control button 5 has the functions of eliminating the alarm sound function and switching the shielding and anti-collision function. The output of the output relay 9 of the crane anti-collision system of the present invention is electrically connected with the control circuit 10 of the crane cart mechanism. When the laser sensor 4 detects the object that is about to collide with the crane cart, it will immediately send it to the PLC programmable controller 6, The logic processing is performed by the PLC programmable controller 6, and the control signal is output to the output relay 9. The output relay 9 triggers the sound and light alarm device 8 to issue a sound and light alarm signal, which realizes the early warning reminder before the collision, and is immediately controlled by the output relay 9. Stop the running of the cart in the forward direction 3 or the cart in the backward direction 2.

When the crane needs and the obstacles remain stationary for a long time, you can press the multi-function control button 5 once to eliminate the alarm sound function, and the sound and light alarm has no output, but the anti-collision function works normally. When the crane and other lifting equipment need to work together, press the multi-function control button 5 again to shield the anti-collision function, and the sound and light alarm action on the crane is output to indicate the operator's status. After the crane is turned off or the multi-function control button 5 is pressed for the third time, the function of eliminating the alarm sound and the function of shielding the anti-collision can be cancelled.

It can be understood that the above specific description about the present utility model is only used to illustrate the present utility model and is not limited to the technical solutions described in the embodiments of the present utility model. Modifications or equivalent replacements are made to the new model to achieve the same technical effect; as long as the needs of use are met, they are all within the protection scope of the present invention.

Claims (7)

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.

Images