Anti-collision device of anti-explosion crane
By installing components such as distance sensors, magnetic repulsion devices, anti-collision blocks, and brake lifting mechanisms on explosion-proof cranes, the problem of explosions caused by collisions between explosion-proof cranes in explosive environments has been solved, achieving multiple protections and enhanced safety.
Patent Information
- Application Number
- CN202520341723.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-28
AI Technical Summary
When explosion-proof cranes operate in explosive environments, they are prone to colliding with adjacent equipment, which can lead to explosions due to uninterrupted power circuits. Existing technologies are unable to effectively prevent such accidents.
The explosion-proof crane uses an anti-collision device, which includes components such as distance sensors, magnetic repulsion components, anti-collision blocks, brake lifting mechanisms, and circuit breakers. By monitoring the distance in real time, it takes measures such as deceleration, braking, and power cut-off to avoid collisions and prevent explosions caused by unbroken circuits.
It achieves multiple protections, avoids mechanical sparks, ensures safety in explosive environments, improves the safety and operational efficiency of cranes, and reduces the risk of collision accidents.
Smart Images
Figure CN223737547U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of vehicle anti-collision technology, in particular to an anti-collision device for anti-explosion crane. BACKGROUND
[0002] The anti-explosion crane is a double-beam bridge crane with anti-explosion electric hoist as the lifting mechanism. The anti-explosion crane is used in explosive environments such as chemical enterprises and garbage disposal plants, where flammable and explosive gases and combustible dust are easily produced.
[0003] The bridge crane is a lifting device for hoisting and transporting materials above workshops, warehouses and yards. Since its two ends are placed on high cement columns or metal supports, it looks like a bridge. The bridge of the bridge crane runs longitudinally along the tracks laid on the high supports on both sides, which can fully utilize the space below the bridge for hoisting and transporting materials without being hindered by ground equipment.
[0004] When the anti-explosion crane operates in an explosive environment, accidents of collision with adjacent anti-explosion cranes or equipment often occur. At this time, if the power circuit of the anti-explosion crane is not disconnected, it may cause the anti-explosion crane to explode. CONTENT OF THE UTILITY MODEL
[0005] In order to solve the problems of the prior art, the purpose of the present application is to provide an anti-collision device for anti-explosion crane, which can avoid the explosion of the anti-explosion crane caused by the non-disconnection of the power circuit of the anti-explosion crane when the anti-explosion cranes collide with each other.
[0006] To achieve the above purpose, the technical scheme adopted by the present application is as follows:
[0007] The present application provides an anti-collision device for anti-explosion crane, which comprises: a mounting frame, a distance sensor, a brake, a brake lifting mechanism, a brake lifting mechanism control circuit, a contact switch and a circuit breaker; the mounting frame is fixedly installed at the end of the ground beam of the anti-explosion crane; the distance sensor is fixedly installed on the mounting frame, and is used to detect the distance between the present anti-collision crane and the adjacent anti-explosion crane; the brake is located on at least one side of the ground beam of the anti-explosion crane; the brake lifting mechanism is connected to the brake to drive the brake to lift or lower, so that the brake falls on / away from the track of the anti-explosion crane; the brake lifting mechanism control circuit is connected to the brake lifting mechanism; the contact switch is installed at the end of the ground beam of the anti-explosion crane, and is connected to the brake lifting mechanism control circuit. After the contact switch is triggered, the brake lifting mechanism control circuit controls the brake lifting mechanism to make the brake fall on the track of the anti-explosion crane; the contact switch is connected to the circuit breaker, and the circuit breaker is connected to the power circuit of the anti-explosion crane. After the contact switch is triggered, the circuit breaker controls the power circuit of the anti-explosion crane to be disconnected.
[0008] As a preferred technical solution, the brake lifting mechanism comprises a brake motor, a steel wire rope, a pulley, a sliding rail and a sliding block; the brake motor is installed on the ground beam of the explosion-proof crane; the brake motor is connected with the steel wire rope to drive the steel wire rope to be wound and unwound; the pulley is installed at the end of the ground beam of the explosion-proof crane, and the steel wire rope is in sliding connection with the pulley; the sliding block is fixedly connected with the steel wire rope, the sliding rail is fixedly connected with the ground beam of the explosion-proof crane, and the sliding block is fixedly connected with the brake to drive the brake to be lifted.
[0009] As a preferred technical solution, the brake is a brake shoe.
[0010] As a preferred technical solution, the anti-collision device of the explosion-proof crane further comprises a magnetic repulsion member, an anti-collision block and an anti-collision block support; the magnetic repulsion member is fixedly installed at the end of the ground beam of the explosion-proof crane, and a mounting frame is arranged around the magnetic repulsion member; the anti-collision block support is fixedly installed at one end of the mounting frame away from the end of the ground beam of the explosion-proof crane, the anti-collision block support is in the shape of an arc protruding away from the end of the ground beam of the explosion-proof crane, and the anti-collision block is fixedly installed at the protruding end of the anti-collision block support.
[0011] As a preferred technical solution, the anti-collision device of the explosion-proof crane further comprises a combustible gas detection module, a combustible dust detection module and an audible and visual alarm; the combustible gas detection module is installed on the trolley of the explosion-proof crane; the combustible dust detection module is installed at the end of the ground beam of the explosion-proof crane; the audible and visual alarm is connected with the distance sensor, the combustible gas detection module and the combustible dust detection module respectively, and the audible and visual alarm alarms when the distance sensor detects that the distance is less than the preset distance, or the combustible gas detection module detects combustible gas, or the combustible dust detection module detects combustible dust.
[0012] As a preferred technical solution, the anti-collision device of the explosion-proof crane further comprises an accelerometer, a rotation speed sensor, a wireless communication module and a data processing unit; the accelerometer and the rotation speed sensor are connected with the driving mechanism of the explosion-proof crane respectively; the wireless communication module is used for communication with the wireless communication module of the adjacent explosion-proof crane; the data processing unit receives the data of the accelerometer, the rotation speed sensor and the wireless communication module, judges the collision risk through a preset threshold value and triggers the brake lifting mechanism to act.
[0013] As a preferred technical solution, the wireless communication module is a CAN bus communication module or an industrial Ethernet communication module, and the wireless communication module is integrated in the control cabinet of the explosion-proof crane.
[0014] As a preferred technical solution, the anti-collision block is made of copper material, and the thickness of the anti-collision block is not less than 10 mm.
[0015] The anti-collision device of the explosion-proof crane of the present application works as follows:
[0016] Activate the distance sensor to detect the distance between this anti-collision crane and adjacent explosion-proof cranes;
[0017] If the distance between this anti-collision crane and an adjacent explosion-proof crane is less than the safe distance, the operator shall slow down or stop the explosion-proof crane to avoid a collision and achieve the first layer of protection.
[0018] If the explosion-proof crane does not stop, the contact switch of this anti-collision crane will contact the contact switch of the adjacent explosion-proof crane, causing the contact switch to be triggered. After the contact switch is triggered, the brake lifting mechanism control circuit controls the brake lifting mechanism to make the brake fall on the explosion-proof crane track, thereby braking the explosion-proof crane, and thus slowing down and stopping the explosion-proof crane.
[0019] The above settings can prevent explosions caused by the failure to disconnect the power circuit of explosion-proof cranes when they collide with each other. Attached Figure Description
[0020] Figure 1 This is a structural schematic diagram of the explosion-proof crane anti-collision device of this application;
[0021] Figure 2 This is a schematic diagram of the module connection structure of the explosion-proof crane anti-collision device of this application;
[0022] Figure 3 This is a schematic diagram of the installation structure of the explosion-proof crane anti-collision device of this application;
[0023] Figure 4 This is a structural schematic diagram of the brake and brake lifting mechanism of this application;
[0024] Figure 5 This is a flowchart of the explosion-proof crane anti-collision method of this application;
[0025] The components include: 1. Explosion-proof crane anti-collision device; 11. Mounting bracket; 12. Distance sensor; 13. Magnetic repulsion component; 14. Anti-collision block; 15. Anti-collision block bracket; 16. Brake; 17. Brake lifting mechanism; 171. Brake motor; 172. Wire rope; 173. Pulley; 174. Slide rail; 175. Slider; 176. Limit block; 18. Brake lifting mechanism control circuit; 19. Contact switch; 20. Circuit breaker; 21. Combustible gas detection module; 22. Combustible dust detection module; 23. Audible and visual alarm.
[0026] 2. Ground beam; 3. Wheel. Detailed Implementation
[0027] To enable those skilled in the art to better understand the present application, the technical solutions in specific embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
[0028] like Figure 1 As shown, this application provides an explosion-proof crane anti-collision device 1, which includes: a mounting frame 11, a distance sensor 12, a magnetic repulsion component 13, an anti-collision block 14, and an anti-collision block bracket 15.
[0029] In this application, the explosion-proof crane anti-collision device 1 is provided in two sets. The two sets of explosion-proof crane anti-collision devices 1 are respectively installed at the front end and the rear end of the ground beam 2 of the explosion-proof crane, and are respectively used for preventing collision between the explosion-proof crane and the explosion-proof crane adjacent to the front side, and for preventing collision between the explosion-proof crane and the explosion-proof crane adjacent to the rear side.
[0030] It should be noted that when the explosion-proof crane is the one at the very end of the cable tray, anti-collision devices are also installed at the front and rear ends of the explosion-proof crane ground beam 2. The reason for this is that steel limiting components are typically installed at the ends of the cable tray to limit and prevent the explosion-proof crane from detaching. To prevent mechanical sparks from being generated due to collisions between the explosion-proof crane and the limiting components, anti-collision devices are installed at the opposite ends of the explosion-proof crane and the limiting components.
[0031] The mounting bracket 11 is fixedly installed at the end of the explosion-proof crane ground beam 2. The explosion-proof crane ground beam 2 is an important component of the explosion-proof crane, mainly used to support the main beam and outriggers of the explosion-proof crane, enabling the explosion-proof crane to move stably on the guide rails.
[0032] The distance sensor 12 is fixedly mounted on the mounting bracket 11. The distance sensor 12 is used to detect the distance between this anti-collision crane and adjacent explosion-proof cranes. In this application, the distance sensor 12 is an optical distance sensor 12, an infrared distance sensor 12, an ultrasonic distance sensor 12, etc.
[0033] The magnetic repulsion element 13 is fixedly installed at the end of the ground beam 2 of the explosion-proof crane, and the mounting frame 11 surrounds the magnetic repulsion element 13. Utilizing the principle of repulsion between the magnetic repulsion element 13 at the end of the ground beam 2 of this anti-collision crane and the magnetic repulsion element 13 at the end of the adjacent explosion-proof crane ground beam 2, the explosion-proof crane can be decelerated. This deceleration provides the driver with a longer reaction time, allowing sufficient time to slow down and brake the explosion-proof crane, thus reducing safety hazards.
[0034] It should be noted that the magnetic repulsion component 13 can be a powerful permanent magnet; or, the magnetic repulsion component 13 can be a powerful electromagnet. When the distance between this anti-collision crane and the adjacent explosion-proof crane is greater than the safe distance, the powerful electromagnet will not be activated. When the distance between this anti-collision crane and the adjacent explosion-proof crane is less than or equal to the safe distance, the powerful electromagnet will be activated.
[0035] The anti-collision block bracket 15 is fixedly installed on the end of the mounting frame 11 away from the end of the explosion-proof crane ground beam 2. The anti-collision block bracket 15 has an arc shape that protrudes towards the end away from the end of the explosion-proof crane ground beam 2. The anti-collision block 14 is fixedly installed on the protrusion of the anti-collision block bracket 15. When this anti-collision crane collides with an adjacent explosion-proof crane, the anti-collision block 14 of this anti-collision crane collides and contacts the anti-collision block 14 of the adjacent explosion-proof crane, so as to avoid direct contact between the steel parts of this anti-collision crane and the adjacent explosion-proof crane to generate mechanical sparks, thereby preventing an explosion caused by mechanical sparks in an explosive environment. The arc-shaped anti-collision block bracket 15 deforms during the collision, playing a buffering role during the collision.
[0036] Specifically, the bumper block 14 is made of copper and has a thickness of not less than 10mm. The copper bumper block 14 is not prone to aging or deformation, does not easily generate static electricity, and does not produce mechanical sparks upon impact. Therefore, the copper bumper block 14 avoids the loss of its anti-collision function due to aging over time or deformation from repeated collisions that occurs with bumper blocks 14 made of materials such as rubber or nylon. Furthermore, it avoids the generation of mechanical sparks when bumper blocks 14 made of steel collide with each other, thus preventing explosions caused by mechanical sparks in explosive environments.
[0037] The above-mentioned explosion-proof crane anti-collision device 1 operates as follows:
[0038] Activate distance sensor 12 to detect the distance between this anti-collision crane and the adjacent explosion-proof crane;
[0039] If the distance between this anti-collision crane and the adjacent explosion-proof crane is less than the safe distance, an alarm will be triggered by the audible and visual alarm 23; otherwise, the distance sensor 12 will continue to detect the distance between the distance sensor 12 and the end of the ground beam 2 of the adjacent explosion-proof crane.
[0040] When the operator observes the alarm signal of the audible and visual alarm 23, he or she will operate the explosion-proof crane to slow down or stop, so as to avoid collision and achieve the first layer of protection.
[0041] If the explosion-proof crane does not stop, the magnetic repulsion element 13 at the end of the ground beam 2 of this anti-collision crane will interact with the magnetic repulsion element 13 at the end of the ground beam 2 of the adjacent explosion-proof crane, thereby slowing down or stopping the explosion-proof crane and realizing the second layer of protection.
[0042] If the explosion-proof crane still does not stop, the anti-collision block 14 of this anti-collision crane will collide with the anti-collision block 14 of the adjacent explosion-proof crane, thereby slowing down and stopping the explosion-proof crane. If the first and second layers of protection still cannot prevent the explosion-proof crane from colliding, the anti-collision blocks 14 will collide. When the explosion-proof crane passes through the magnetic repulsion element 13, its kinetic energy has been reduced. If it cannot stop, it will collide with the anti-collision block 14 of the adjacent explosion-proof crane with minimal kinetic energy. The two anti-collision blocks 14 that collide will not produce mechanical sparks, which meets the explosion-proof requirements and achieves the third layer of protection.
[0043] With the above-mentioned design, this application can prevent sparks from being generated during collisions between explosion-proof cranes, thus avoiding explosions.
[0044] like Figure 2 As shown, as one implementation method, the explosion-proof crane anti-collision device 1 also includes: a brake 16, a brake lifting mechanism 17, a brake lifting mechanism control circuit 18, a contact switch 19, and a circuit breaker 20.
[0045] The brake 16 is located on at least one side of the ground beam 2 of the explosion-proof crane. The braking principle of the brake 16 is to restrict the rotation of the wheels 3 of the explosion-proof crane so that the wheels 3 of the explosion-proof crane come into frictional contact with the wheel 3 track, thereby achieving the braking effect of the explosion-proof crane.
[0046] The brake lifting mechanism 17 is connected to the brake 16 to drive the brake 16 to rise or fall, so that the brake 16 falls onto / detaches from the explosion-proof crane track. The brake lifting mechanism control circuit 18 is connected to the brake lifting mechanism 17. The contact switch 19 is installed at the end of the ground beam 2 of the explosion-proof crane. When this anti-collision crane collides with an adjacent explosion-proof crane, the contact switch 19 of this anti-collision crane contacts the contact switch 19 of the adjacent explosion-proof crane, thus triggering the contact switch 19.
[0047] like Figure 4 As shown, specifically, the brake lifting mechanism 17 includes: a brake motor 171, a wire rope 172, a pulley 173, a slide rail 174, and a slider 175.
[0048] The brake motor 171 is mounted on the explosion-proof crane ground beam 2, and is connected to the wire rope 172 to drive the wire rope 172 to wind and unwind. A pulley 173 is mounted at the end of the explosion-proof crane ground beam 2, and the wire rope 172 is slidably connected to the pulley 173, which provides support and guidance for the wire rope 172. A slider 175 is fixedly connected to the wire rope 172, and a slide rail 174 is fixedly connected to the explosion-proof crane ground beam 2. The slider 175 is also fixedly connected to the brake 16 to drive the brake 16 to move up and down.
[0049] In this application, the slide rail 174 is arc-shaped, with its two ends located at the end of the explosion-proof crane ground beam 2 and near the bottom of the wheel 3, respectively, so that the brake 16 is guided to the wheel 3. Furthermore, a limiting block 176 is fixedly provided at the lowest end of the slide rail 174. When the slide rail 174 drives the brake 16 down to the lowest end of the slide rail 174, the limiting block 176 acts to limit the slider 175, preventing the slider 175 and the brake 16 from dislodging from the slide rail 174.
[0050] More specifically, brake 16 is a brake shoe. A brake shoe, commonly known as a wheel chock, is a braking tool frequently used in railway shunting operations, primarily to prevent locomotives and rolling stock from slipping. It consists of two parts: a bottom and a head. When the tread of wheel 3 contacts the brake shoe, the head engages to lock the wheel 3, thus achieving a braking effect. The working principle of the brake shoe is that by placing the shoe on the rail, when wheel 3 presses down on the shoe, the rolling friction between the wheel and rail changes to sliding friction, thereby increasing the frictional force and allowing the slipping locomotive or rolling stock to decelerate quickly and stop. In this application, the brake shoe is made of copper alloy.
[0051] Contact switch 19 is connected to brake lifting mechanism control circuit 18. After contact switch 19 is triggered, brake lifting mechanism control circuit 18 controls brake lifting mechanism 17 to make brake 16 land on explosion-proof crane track, restricting the rotation of explosion-proof crane wheels 3, so that explosion-proof crane wheels 3 make frictional contact with wheel 3 track, thereby achieving the braking effect of explosion-proof crane. Contact switch 19 is connected to circuit breaker 20, circuit breaker 20 is connected to explosion-proof crane power circuit. After contact switch 19 is triggered, circuit breaker 20 controls explosion-proof crane power circuit to disconnect, explosion-proof crane loses power, decelerates and stops, realizing the fourth layer of protection function.
[0052] like Figure 2 and Figure 3 As shown, as one implementation method, the explosion-proof crane anti-collision device 1 also includes: a combustible gas detection module 21, a combustible dust detection module 22, and an audible and visual alarm 23.
[0053] The combustible gas detection module 21 is installed on the explosion-proof crane trolley and is used to detect combustible gases in the environment. The combustible dust detection module 22 is installed at the end of the explosion-proof crane ground beam 2 and is used to detect combustible dust in the environment. The audible and visual alarm 23 is connected to the distance sensor 12, the combustible gas detection module 21, and the combustible dust detection module 22, respectively. When the distance sensor 12 detects a distance smaller than a preset distance, or the combustible gas detection module 21 detects combustible gas, or the combustible dust detection module 22 detects combustible dust, the audible and visual alarm 23 will sound an alarm, realizing the fifth layer of protection.
[0054] As one implementation method, the explosion-proof crane anti-collision device 1 also includes: an accelerometer, a speed sensor, a wireless communication module, and a data processing unit.
[0055] The accelerometer and speed sensor are respectively connected to the drive mechanism of the explosion-proof crane. The accelerometer and speed sensor obtain the speed and acceleration of the explosion-proof crane 1 based on the rotation data of the motor of the drive mechanism of the explosion-proof crane 1.
[0056] The wireless communication module is used to communicate with the wireless communication module of an adjacent explosion-proof crane.
[0057] The data processing unit receives data from the accelerometer, speed sensor and wireless communication module, judges the collision risk through preset thresholds and triggers the brake lifting mechanism.
[0058] Specifically, the wireless communication module is either a CAN bus communication module or an industrial Ethernet communication module, and the wireless communication module is integrated into the control cabinet of the explosion-proof crane.
[0059] The explosion-proof crane anti-collision device 1 described above has the following beneficial effects:
[0060] 1. Multiple layers of protection enhance security:
[0061] The explosion-proof crane anti-collision device 1 provided in this application integrates multiple protection mechanisms such as a distance sensor 12, a magnetic repulsion component 13, an anti-collision block 14, and an anti-collision block bracket 15, which can effectively slow down or prevent crane collisions under different circumstances and significantly reduce safety hazards.
[0062] 2. Prevent mechanical sparks and ensure an explosion-proof environment:
[0063] By using a copper-made anti-collision block 14 and employing the principle of magnetic repulsion, mechanical sparks generated by direct contact between steel parts are avoided, meeting explosion-proof requirements and ensuring operational safety in explosive environments.
[0064] 3. Intelligent monitoring and alarm:
[0065] Distance sensor 12 monitors the distance between cranes in real time. Once the distance is less than the safe distance, it triggers audible and visual alarm 23 to remind the operator to take timely measures to avoid a collision.
[0066] 4. Emergency braking function:
[0067] In the event that a collision is unavoidable, the braking system can be activated quickly, using devices such as brake shoes to restrict the rotation of the crane wheels 3, thereby achieving emergency braking and further reducing the risk of collision.
[0068] 5. Strong environmental adaptability:
[0069] The addition of the combustible gas detection module 21 and the combustible dust detection module 22 enables the device to monitor the concentration of combustible gases and dust in the working environment in real time, and triggers an alarm once a dangerous situation is detected, thereby enhancing the environmental adaptability of the device.
[0070] The synergistic effect of multiple protective measures in this application:
[0071] 1. The components complement each other to form a complete protection system:
[0072] The distance sensor 12, magnetic repulsion component 13, anti-collision block 14 and anti-collision block bracket 15, etc., each perform different protective functions, complement each other, and together form a complete protection system to ensure the safety of the crane under different conditions.
[0073] 2. Combination of intelligent monitoring and manual operation:
[0074] The intelligent monitoring system can monitor the distance between cranes and the concentration of flammable gases and dust in the environment in real time. Once an abnormality is detected, an alarm is triggered to remind the operator to take action. At the same time, the operator can also manually operate the crane to slow down or stop in time based on the alarm signal, realizing an organic combination of intelligent monitoring and manual operation.
[0075] 3. Combining emergency braking with conventional braking:
[0076] When conventional braking fails to effectively prevent a collision, the emergency braking system can be activated quickly, using devices such as brake shoes to achieve emergency braking. This combination of emergency braking and conventional braking further enhances the safety of the crane.
[0077] 4. Prioritize both improving work efficiency and ensuring safety:
[0078] This device ensures safety while also prioritizing operational efficiency. For example, by using an intelligent monitoring system to monitor crane spacing and environmental conditions in real time, potential hazards can be detected promptly and appropriate measures can be taken, preventing operational interruptions and losses due to accidents such as collisions or explosions. Furthermore, the device features a rational structural design, is easy to operate, and facilitates maintenance and management.
[0079] like Figure 5 As shown, this application also provides a collision prevention method for an explosion-proof crane, which includes:
[0080] Activate distance sensor 12 to detect the distance between this anti-collision crane and the adjacent explosion-proof crane;
[0081] If the distance between this anti-collision crane and the adjacent explosion-proof crane is less than the safe distance, the audible and visual alarm 23 will be activated; otherwise, the distance sensor 12 will continue to detect the distance between the distance sensor 12 and the end of the ground beam 2 of the adjacent explosion-proof crane.
[0082] When the operator observes the alarm signal of the audible and visual alarm 23, he or she will operate the explosion-proof crane to slow down or stop.
[0083] If the explosion-proof crane does not stop, the magnetic repulsion element 13 at the end of the ground beam 2 of this anti-collision crane will interact with the magnetic repulsion element 13 at the end of the ground beam 2 of the adjacent explosion-proof crane, thereby causing the explosion-proof crane to slow down or stop.
[0084] If the explosion-proof crane still does not stop, the anti-collision block 14 of this anti-collision crane will collide with the anti-collision block 14 of the adjacent explosion-proof crane, thereby slowing down and stopping the explosion-proof crane.
[0085] The collision prevention method for explosion-proof cranes provided in this application effectively prevents and controls the collision risks during the operation of explosion-proof cranes through a series of orderly and efficient steps. The beneficial effects of this method are mainly reflected in the following aspects:
[0086] 1. Early warning to reduce collision risk:
[0087] The method first activates distance sensor 12 to monitor the distance between this anti-collision crane and adjacent explosion-proof cranes in real time. When the distance is less than the preset safe distance, an alarm signal is immediately issued via audible and visual alarm 23 to alert the operator and prompt them to take appropriate deceleration or stopping measures. This step provides early warning, giving operators sufficient time to deal with potential collision risks, thereby significantly reducing the incidence of collision accidents.
[0088] 2. Multi-level protection enhances security:
[0089] This method employs a multi-level protection mechanism. After the audible and visual alarm 23 sounds, if the operator fails to take timely action, the magnetic repulsion element 13 at the end of the anti-collision crane's ground beam 2 will interact with the magnetic repulsion element 13 at the end of the adjacent explosion-proof crane's ground beam 2, using the principle of like polarity repulsion to slow down or stop the explosion-proof crane. If this step still fails to prevent a collision, then the anti-collision block 14 will act as a last line of defense, colliding with the anti-collision block 14 of the adjacent explosion-proof crane to further mitigate or prevent the collision. This multi-level protection mechanism ensures effective protection of the crane from collision damage in various situations.
[0090] 3. Avoid mechanical sparks and ensure an explosion-proof environment:
[0091] Since explosion-proof cranes typically operate in environments where explosive gases may be present, avoiding mechanical sparks is crucial. This method employs a magnetic repellent element 13 and a copper anti-collision block 14 to prevent mechanical sparks generated by direct contact between steel components, thereby ensuring the safety of the explosion-proof environment.
[0092] 4. Improve work efficiency and safety:
[0093] This method not only improves the safety of explosion-proof cranes but also enhances operational efficiency to some extent. Through early warning systems and multi-level protection mechanisms, operators can work with greater peace of mind, without constantly worrying about collisions. This helps reduce downtime and maintenance costs caused by collisions, thereby improving overall operational efficiency.
[0094] 5. Easy to implement and maintain:
[0095] The equipment required for this method (such as distance sensor 12, audible and visual alarm 23, magnetic repellent 13, and anti-collision block 14) are all readily available components, making implementation relatively simple. Furthermore, the maintenance of these devices is relatively easy, significantly reducing maintenance costs and time.
[0096] In summary, the collision prevention method for explosion-proof cranes provided in this application offers beneficial effects such as early warning, multi-level protection, avoidance of mechanical sparks, improved operational efficiency and safety, and ease of implementation and maintenance. This method can effectively prevent and control collision risks during the operation of explosion-proof cranes, providing operators with a safer and more efficient working environment.
[0097] As one implementation method, collision prevention methods for explosion-proof cranes also include:
[0098] If the explosion-proof crane does not stop, the contact switch 19 of this anti-collision crane will contact the contact switch 19 of the adjacent explosion-proof crane, causing the contact switch 19 to be triggered. After the contact switch 19 is triggered, the brake lifting mechanism control circuit 18 controls the brake lifting mechanism 17 to make the brake 16 fall on the explosion-proof crane track, thereby braking the explosion-proof crane, and thus slowing down and stopping the explosion-proof crane.
[0099] Based on the existing collision prevention method for explosion-proof cranes, a new linkage mechanism between the contact switch 19 and the brake lifting mechanism control circuit 18 has been added. This improvement further enhances the reliability and safety of the collision prevention system. The following are the beneficial effects of the new addition:
[0100] 1. Multiple braking protections:
[0101] If the explosion-proof crane fails to stop after the audible and visual alarms and the activation of the magnetic repulsion element 13, the newly added contact switch 19 will act as another braking barrier. Once the contact switch 19 contacts the corresponding switch of the adjacent explosion-proof crane, it will immediately trigger the brake lifting mechanism control circuit 18, causing the brake 16 to quickly land on the explosion-proof crane track, achieving emergency braking. This mechanism provides multiple braking safeguards for the explosion-proof crane, ensuring that it can stop quickly and effectively even in extreme situations.
[0102] 2. Improve braking response speed:
[0103] The design of the brake lifting mechanism control circuit 18 greatly accelerates the response speed of the brake 16. Once the contact switch 19 is triggered, the control circuit immediately activates the brake lifting mechanism 17, causing the brake 16 to quickly descend and clamp the rail, thus achieving the braking effect in the shortest possible time. This helps reduce the occurrence of collision accidents and protects the safety of the crane and the surrounding environment.
[0104] 3. Enhance system stability and reliability:
[0105] The newly added contact switch 19 and brake lifting mechanism control circuit 18 are both reliable components that have undergone rigorous testing and verification. Their inclusion not only improves the overall stability of the collision avoidance system but also enhances its reliability. Even in harsh operating environments, these components maintain stable performance, ensuring the normal operation of the collision avoidance system.
[0106] 4. Reduce maintenance costs:
[0107] Although new components such as the contact switch 19 and the brake lifting mechanism control circuit 18 have been added, these components are all common and readily available parts. Therefore, they will not increase maintenance costs significantly. On the contrary, the addition of these components improves the reliability and stability of the system, reducing downtime and maintenance costs due to system failures.
[0108] In summary, the linkage mechanism between the newly added contact switch 19 and the brake lifting mechanism control circuit 18 provides multiple braking safeguards for the collision prevention method of explosion-proof cranes, improves braking response speed, enhances system stability and reliability, and reduces maintenance costs. This improvement will help enhance the safety and reliability of explosion-proof cranes and further reduce the risk of collision accidents.
[0109] As one implementation method, collision prevention methods for explosion-proof cranes also include:
[0110] If the explosion-proof crane does not stop, the contact switch 19 of this collision-proof crane will contact the contact switch 19 of the adjacent explosion-proof crane, causing the contact switch 19 to be triggered. After the contact switch 19 is triggered, the circuit breaker 20 controls the power circuit of the explosion-proof crane to be disconnected, thereby causing the explosion-proof crane to decelerate and stop.
[0111] In the collision prevention method for explosion-proof cranes, the newly added mechanism of triggering the circuit breaker 20 via contact switch 19 to disconnect the power circuit of the explosion-proof crane provides a more direct and effective braking means for the collision prevention system. The beneficial effects of this improvement are mainly reflected in the following aspects:
[0112] 1. Significantly improved emergency braking performance:
[0113] When the explosion-proof crane fails to stop due to the failure of audible and visual alarms, magnetic repulsion device 13, and brake lifting mechanism 17, the triggering of contact switch 19 will directly cause circuit breaker 20 to operate, quickly cutting off the power circuit of the explosion-proof crane. This emergency braking measure can immediately stop all moving parts of the crane, effectively preventing collision accidents. Compared with previous braking methods, this method is faster and more direct, and the braking effect is significantly improved.
[0114] 2. Enhanced system security:
[0115] Braking by cutting off the power supply eliminates the source of power for the crane to continue operating. This measure not only improves braking effectiveness but also enhances the safety of the entire collision avoidance system. In extreme cases, even if other braking measures fail, cutting off the power ensures that the crane will not continue to move, thus protecting the safety of operators and the surrounding environment.
[0116] 3. Reduced maintenance costs:
[0117] Although new components such as contact switch 19 and circuit breaker 20 have been added, these are all common and readily available parts. In terms of maintenance, the replacement and repair of these components are relatively simple and will not increase maintenance costs excessively. At the same time, the addition of these components improves the reliability and stability of the system, reducing downtime and maintenance costs caused by system failures.
[0118] 4. Wide range of applications:
[0119] This collision avoidance method is not only applicable to explosion-proof cranes, but can also be extended to other types of cranes. Emergency braking by cutting off the power supply is a universal and effective braking method. Therefore, this method has broad applicability and can provide safer and more reliable collision protection for various types of cranes.
[0120] In summary, the newly added mechanism of triggering the circuit breaker 20 via contact switch 19 to disconnect the power circuit of the explosion-proof crane provides a more direct and effective braking method for the collision avoidance system. This improvement not only significantly enhances the emergency braking effect and strengthens system safety, but also reduces maintenance costs and has broad applicability. These beneficial effects will help improve the overall safety and reliability of explosion-proof cranes and further reduce the risk of collision accidents.
[0121] As one implementation method, collision prevention methods for explosion-proof cranes also include:
[0122] The speed of the explosion-proof crane is obtained by collecting the acceleration of the crane using an accelerometer and the rotational speed of the crane's motor and gearbox using a speed sensor.
[0123] The system receives real-time data from adjacent explosion-proof cranes via a wireless communication module. The real-time data includes the speed and acceleration of the explosion-proof cranes.
[0124] Calculate the relative position, relative velocity, and relative acceleration of this explosion-proof crane and the adjacent explosion-proof crane using the speed and acceleration of this explosion-proof crane, the speed and acceleration of the adjacent explosion-proof crane, and the distance between this collision-proof crane and the adjacent explosion-proof crane.
[0125] Predict the possible collision time between this explosion-proof crane and adjacent explosion-proof cranes using kinematic models;
[0126] Based on the safety factor, different safety distances are set. When the distance between this anti-collision crane and the adjacent explosion-proof crane is less than the safety distance, the audible and visual alarm 23 is triggered.
[0127] In the collision avoidance method for explosion-proof cranes, advanced technologies such as accelerometers, speed sensors, wireless communication modules, and kinematic model prediction are introduced to further improve the intelligence and accuracy of the collision avoidance system. The beneficial effects of this improvement are mainly reflected in the following aspects:
[0128] 1. Improve the accuracy of collision warnings:
[0129] By collecting the acceleration and speed of the explosion-proof crane in real time using accelerometers and speed sensors, and combining this with real-time data from adjacent cranes received via a wireless communication module, the system can accurately obtain dynamic information about the two cranes. Based on this, by calculating relative position, relative speed, and relative acceleration, the system can more accurately predict potential collisions, thereby triggering the audible and visual alarm 23 in advance and providing operators with more reaction time.
[0130] 2. Enhance the system's intelligence level:
[0131] The introduction of kinematic models enables the system to intelligently predict collision risks based on current and future motion trends. This predictive capability not only improves the timeliness of collision warnings but also allows the system to flexibly adjust safety distances according to specific circumstances, adapting to different working environments and operational needs. This enhanced intelligence helps reduce false alarms and missed alarms, improving the overall performance of the system.
[0132] 3. Improve system reliability and stability:
[0133] By collecting and comprehensively analyzing data from multiple sensors, the system can more comprehensively and accurately assess collision risks. This multi-data verification and cross-validation mechanism enhances the system's reliability and stability. Even if a single sensor malfunctions or displays abnormal data, the system can continue to operate normally using data from other sensors, ensuring the effectiveness of the collision avoidance function.
[0134] 4. Optimize user experience and improve work efficiency:
[0135] The intelligent collision avoidance system not only improves safety but also optimizes the operating experience. Operators can focus more on their tasks without constantly worrying about collision risks. Furthermore, by accurately predicting collision times and providing early warnings, the system helps reduce downtime and work interruptions caused by emergency braking or avoidance, thereby improving overall operational efficiency.
[0136] 5. Easy to expand and upgrade:
[0137] The sensors, wireless communication modules, and kinematic models used in this method are all mature and easily expandable components. With continuous technological advancements and evolving needs, the system can be easily upgraded and expanded to adapt to new working environments and operational requirements. This ease of expansion and upgrade allows the system to maintain its leading position, providing operators with safer and more efficient collision avoidance protection.
[0138] In summary, the collision avoidance method for explosion-proof cranes, which incorporates technologies such as accelerometers, speed sensors, wireless communication modules, and kinematic model prediction, not only improves the accuracy of collision warnings and the system's intelligence level, but also enhances the system's reliability and stability, optimizes the user experience, and increases operational efficiency. These beneficial effects will help improve the overall safety and reliability of explosion-proof cranes and further reduce the risk of collision accidents.
[0139] Specifically, the formula for calculating the safe distance is: D = (V1 + V2) × t + k, where D is the safe distance, V1 is the speed of the explosion-proof crane, V2 is the speed of the adjacent explosion-proof crane, and k is the safety factor.
[0140] In explosion-proof crane collision avoidance systems, the formula for calculating the safe distance, D=(V1+V2)×t+k, has significant beneficial effects. The following is a detailed analysis of this formula and its beneficial effects:
[0141] Explanation of the formula for calculating safe distance:
[0142] D: Indicates the safety distance, which is the minimum distance that should be maintained between two explosion-proof cranes to prevent collisions.
[0143] V1: Indicates the speed of this explosion-proof crane.
[0144] V2: Indicates the speed of the adjacent explosion-proof crane.
[0145] t: Indicates the operator's reaction time, i.e. the time required from detecting a potential collision risk to taking braking measures.
[0146] k: represents the safety factor, which is used to account for the impact of various uncertainties (such as systematic errors, operational errors, etc.) on the safety distance, ensuring that the calculated safety distance has sufficient margin.
[0147] The above settings have the following beneficial effects:
[0148] 1. Improve the accuracy of collision warnings:
[0149] By comprehensively considering the speeds of the two cranes, the operator's reaction time, and a safety factor, this formula can calculate a more accurate safe distance. This helps the system issue timely warnings before potential collision risks occur, providing operators with sufficient reaction time.
[0150] 2. Enhance the system's adaptability and flexibility:
[0151] The safety factor k in this formula can be adjusted according to actual conditions. For example, in complex or high-risk working environments, the value of the safety factor k can be appropriately increased to ensure a greater safety margin. This flexibility allows the system to adapt to different working environments and operational requirements.
[0152] 3. Optimize work efficiency:
[0153] By precisely calculating the safe distance, the system allows two cranes to approach each other at higher speeds while ensuring safety, thereby improving operational efficiency to some extent. At the same time, it reduces operational interruptions and waiting times caused by overly conservative safe distance settings.
[0154] 4. Improve system reliability and stability:
[0155] Based on mature physical principles and mathematical models, this formula boasts high reliability and stability. By monitoring the speed and position information of the two cranes in real time, and combining this with the operator's reaction time and safety factor, the system can continuously and accurately assess collision risks, ensuring the safe operation of the explosion-proof cranes.
[0156] 5. Easy to maintain and upgrade:
[0157] The implementation of this formula relies on hardware devices such as sensors and controllers, as well as corresponding software algorithms. With continuous technological advancements and evolving needs, these hardware devices and software algorithms can be easily upgraded and replaced to adapt to new operating environments and requirements. This ease of maintenance and upgrades allows the system to maintain its leading position, providing operators with safer and more efficient collision avoidance protection.
[0158] In summary, the formula for calculating the safe distance, D=(V1+V2)×t+k, has significant beneficial effects on the collision avoidance system of explosion-proof cranes. It not only improves the accuracy of collision warnings and enhances the system's adaptability and flexibility, but also optimizes operational efficiency, improves system reliability and stability, and facilitates system maintenance and upgrades.
[0159] It should be noted that the terms "first," "second," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. "A plurality" or "several" indicates at least two. Unless otherwise stated, terms such as "front," "back," "left," "right," "lower," and / or "upper" are for illustrative purposes only and are not limited to a location or spatial orientation. Terms such as "comprising" or "including" indicate that the elements or objects preceding "comprising" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.
[0160] The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.
[0161] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.
Claims
1. An anti-collision device for an explosion-protected crane, characterized in that The anti-collision device of the explosion-proof crane comprises: a mounting frame fixedly installed at the end of the girder of the explosion-proof crane; a distance sensor fixedly installed on the mounting frame, the distance sensor being used to detect the distance between the explosion-proof crane and an adjacent explosion-proof crane; a brake located at at least one side of the girder of the explosion-proof crane; a brake lifting mechanism connected to the brake to drive the brake to be lifted or lowered so as to make the brake fall on or off the track of the explosion-proof crane; a brake lifting mechanism control circuit connected to the brake lifting mechanism; a contact switch installed at the end of the girder of the explosion-proof crane, the contact switch being connected to the brake lifting mechanism control circuit, and the contact switch triggering the brake lifting mechanism control circuit to control the brake lifting mechanism to make the brake fall on the track of the explosion-proof crane; a circuit breaker connected to the contact switch, the circuit breaker being connected to the power supply circuit of the explosion-proof crane, and the contact switch triggering the circuit breaker to control the power supply circuit of the explosion-proof crane to be disconnected.
2. The anti-collision device of the explosion-proof crane according to claim 1, characterized in that, The brake lifting mechanism comprises: a brake motor installed on the girder of the explosion-proof crane; a steel wire rope connected to the brake motor to drive the steel wire rope to be wound or unwound; a pulley installed at the end of the girder of the explosion-proof crane, the steel wire rope being in sliding connection with the pulley; a slide rail fixedly connected to the girder of the explosion-proof crane, and a slide block fixedly connected to the steel wire rope, the slide block being in fixed connection with the brake to drive the brake to be lifted or lowered.
3. A collision avoidance device for an explosion-proof crane according to claim 1 or 2, characterized in that The brake is a brake shoe.
4. A collision avoidance device for an explosion-proof crane according to claim 3, characterized in that The anti-collision device of the explosion-proof crane further comprises: a magnetic repulsion member fixedly installed at the end of the girder of the explosion-proof crane, and the mounting frame being arranged outside the magnetic repulsion member; a bumper and a bumper support, the bumper support being fixedly installed at the end of the mounting frame away from the end of the girder of the explosion-proof crane, the bumper support being in the shape of an arc protruding away from the end of the girder of the explosion-proof crane, and the bumper being fixedly installed at the protruding end of the bumper support.
5. A collision avoidance device for an explosion-proof crane according to claim 4, characterized in that The anti-collision device of the explosion-proof crane further comprises: a combustible gas detection module installed on the trolley of the explosion-proof crane; a combustible dust detection module installed at the end of the girder of the explosion-proof crane; a sound-light alarm connected to the distance sensor, the combustible gas detection module and the combustible dust detection module, the sound-light alarm alarming when the distance sensor detects that the distance is less than a preset distance, or the combustible gas detection module detects combustible gas, or the combustible dust detection module detects combustible dust.
6. The anti-collision device of an explosion-proof crane according to claim 1, characterized in that, The anti-collision device of the explosion-proof crane further comprises: an accelerometer and a rotation speed sensor connected to the driving mechanism of the explosion-proof crane, respectively. The wireless communication module is used for communication with a wireless communication module of a neighboring explosion-proof crane. The data processing unit receives data of the accelerometer, the rotation speed sensor and the wireless communication module, judges a collision risk through a preset threshold value and triggers the brake lifting mechanism to act.
7. A collision avoidance device for an explosion-proof crane according to claim 6, characterized in that The wireless communication module is a CAN bus communication module or an industrial Ethernet communication module, and is integrated in a control cabinet of the explosion-proof crane.
8. The anti-collision device of an explosion-proof crane according to claim 4, characterized in that, The anti-collision block is made of copper material and has a thickness not less than 10 mm.