Anti-collision device and anti-collision method for explosion-proof crane

Abstract

The invention discloses an anti-collision device and an anti-collision method for an anti-explosion crane. The anti-collision device comprises a mounting frame, a distance sensor, a magnetic repulsion piece, an anti-collision block and an anti-collision block bracket, and is mounted at the end part of a ground beam of the anti-explosion crane. The method comprises the following steps: starting a distance sensor to detect a distance, giving an alarm through an audible and visual alarm when the distance is smaller than a safe distance, and operating the crane to decelerate or stop by an operator according to a signal; if the crane is not stopped, the magnetic repulsion pieces interact to decelerate or stop the crane; and if the crane is not stopped, the anti-collision block collides and contacts to decelerate and stop the crane. By means of the arrangement, explosion caused by sparks generated in the collision process of the anti-explosion cranes can be avoided.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle anti-collision, and in particular to an anti-collision device and an anti-collision method for an explosion-proof crane. Background Art

[0002] Explosion-proof hoist bridge crane, referred to as "explosion-proof crane", is a double-beam bridge crane with explosion-proof electric hoist as the lifting mechanism. Explosion-proof cranes are used in explosive environments such as chemical companies and waste treatment plants, which are prone to produce flammable and explosive gases and combustible dust.

[0003] The bridge crane is a lifting equipment that is horizontally mounted above the workshop, warehouse and material yard to lift materials. Because its two ends are located on tall concrete columns or metal brackets, it looks like a bridge. The bridge of the bridge crane runs longitudinally along the tracks laid on the elevated platforms on both sides, and can make full use of the space under the bridge to lift materials without being hindered by ground equipment.

[0004] When explosion-proof cranes are operating in explosive environments, accidents of collision with adjacent explosion-proof cranes or equipment units may occur from time to time. During the collision, mechanical sparks are easily generated due to direct contact between the steel parts of the explosion-proof cranes. In an explosive environment, due to flammable and explosive gases and combustible dust, sparks are easily generated during the collision between explosion-proof cranes, causing explosions. Summary of the invention

[0005] In order to address the deficiencies of the prior art, the purpose of the present application is to provide an anti-collision device and an anti-collision method for explosion-proof cranes, which can prevent sparks from being generated and explosions from being caused when explosion-proof cranes collide with each other.

[0006] To achieve the above objectives, this application adopts the following technical solutions: An explosion-proof crane anti-collision device comprises: a mounting frame, a distance sensor, a magnetic repulsion member, an anti-collision block and an anti-collision block bracket; the mounting frame is fixedly mounted on the end of the explosion-proof crane ground beam; the distance sensor is fixedly mounted on the mounting frame, and the distance sensor is used to detect the distance between the anti-collision crane and an adjacent explosion-proof crane; the magnetic repulsion member is fixedly mounted on the end of the explosion-proof crane ground beam, and the mounting frame is arranged outside the magnetic repulsion member; the anti-collision block bracket is fixedly mounted on one end of the mounting frame away from the end of the explosion-proof crane ground beam, the anti-collision block bracket is in an arc shape that bulges toward the end away from the end of the explosion-proof crane ground beam, and the anti-collision block is fixedly mounted on the bulge of the anti-collision block bracket.

[0007] As a preferred technical solution, the anti-collision device of the explosion-proof crane also includes: a brake, a brake lifting mechanism, a brake lifting mechanism control circuit, a contact switch and a circuit breaker; the brake is located on at least one side of the explosion-proof crane ground beam; the brake lifting mechanism is connected to the brake to drive the brake to lift, so that the brake falls on / off the explosion-proof crane track; the brake lifting mechanism control circuit is connected to the brake lifting mechanism; the contact switch is installed at the end of the explosion-proof crane ground beam, the contact switch 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 explosion-proof crane track; the contact switch is connected to the circuit breaker, the circuit breaker is connected to the explosion-proof crane power circuit, after the contact switch is triggered, the circuit breaker controls the explosion-proof crane power circuit to disconnect.

[0008] As a preferred technical solution, the anti-collision device of the explosion-proof crane also includes: 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 explosion-proof crane trolley; the combustible dust detection module is installed at the end of the explosion-proof crane ground beam; the audible and visual alarm are respectively connected to the distance sensor, the combustible gas detection module and the combustible dust detection module, and the audible and visual alarm sounds 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.

[0009] As a preferred technical solution, the brake lifting mechanism includes: a brake motor, a wire rope, a pulley, a slide rail and a slider; the brake motor is installed on the ground beam of the explosion-proof crane; the brake motor is connected to the wire rope to drive the 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 wire rope is slidably connected to the pulley; the slider is fixedly connected to the wire rope, the slide rail is fixedly connected to the ground beam of the explosion-proof crane, and the slider is fixedly connected to the brake to drive the brake to be lifted and lowered.

[0010] As a preferred technical solution, the brake is a brake iron shoe.

[0011] The present application also provides an explosion-proof crane anti-collision method, comprising: Start the distance sensor to detect the distance between the anti-collision crane and the adjacent explosion-proof crane through the distance sensor; If the distance between the anti-collision crane and the adjacent explosion-proof crane is less than the safety distance, an alarm is sounded through the sound and light alarm, otherwise the distance sensor continues to detect the distance between the distance sensor and the end of the ground beam of the adjacent explosion-proof crane; The operator observes the alarm signal of the sound and light alarm and operates the explosion-proof crane to slow down or stop; If the explosion-proof crane does not stop, the magnetic repulsion piece at the end of the ground beam of the present anti-collision crane interacts with the magnetic repulsion piece at the end of the ground beam of the adjacent explosion-proof crane, thereby slowing down or stopping the explosion-proof crane; If the explosion-proof crane still does not stop, the anti-collision block of the present anti-collision crane collides and contacts with the anti-collision block of the adjacent explosion-proof crane, thereby causing the explosion-proof crane to slow down and stop.

[0012] As a preferred technical solution, the anti-collision method of the explosion-proof crane also includes: If the explosion-proof crane does not stop, the contact switch of the anti-collision crane contacts 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 so that the brake falls on the explosion-proof crane track, thereby braking the explosion-proof crane, and then slowing down and stopping the explosion-proof crane.

[0013] As a preferred technical solution, the anti-collision method of the explosion-proof crane also includes: If the explosion-proof crane does not stop, the contact switch of the anti-collision crane contacts the contact switch of the adjacent explosion-proof crane, causing the contact switch to be triggered. After the contact switch is triggered, the circuit breaker controls the explosion-proof crane power circuit to be disconnected, thereby slowing down and stopping the explosion-proof crane.

[0014] As a preferred technical solution, the anti-collision method of the explosion-proof crane also includes: The acceleration of the explosion-proof crane is collected by an accelerometer, and the speed of the motor and gearbox of the explosion-proof crane is collected by a speed sensor, so as to obtain the speed of the explosion-proof crane; Receive real-time data sent by adjacent explosion-proof cranes through wireless communication modules, the real-time data including the speed and acceleration of the explosion-proof cranes; The relative position, relative speed and relative acceleration of the explosion-proof crane and the adjacent explosion-proof crane are calculated by the speed and acceleration of the explosion-proof crane, the speed and acceleration of the adjacent explosion-proof crane and the distance between the anti-collision crane and the adjacent explosion-proof crane; The possible collision time between the explosion-proof crane and the adjacent explosion-proof crane is predicted through the kinematic model; Different safety distances are set according to the safety factor. When the distance between the anti-collision crane and the adjacent explosion-proof crane is less than the safety distance, the sound and light alarm is triggered.

[0015] As a preferred technical solution, the calculation formula for the safety distance is: D=(V1+V2)×t+k, where D is the safety 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.

[0016] The explosion-proof crane anti-collision device of this application works as follows: Start the distance sensor to detect the distance between the anti-collision crane and the adjacent explosion-proof crane through the distance sensor; If the distance between the anti-collision crane and the adjacent explosion-proof crane is less than the safety distance, an alarm is given through the sound and light alarm, otherwise the distance sensor continues to detect the distance between the distance sensor and the end of the ground beam of the adjacent explosion-proof crane.

[0017] The operator observes the alarm signal of the sound and light alarm and operates the explosion-proof crane to slow down or stop to avoid collision, thus realizing the first level of protection function; If the explosion-proof crane does not stop, the magnetic repulsion piece at the end of the ground beam of the anti-collision crane interacts with the magnetic repulsion piece at the end of the ground beam of the adjacent explosion-proof crane, thereby slowing down or stopping the explosion-proof crane, thus realizing the second level of protection function; If the explosion-proof crane still does not stop, the anti-collision block of this anti-collision crane collides with the anti-collision block of the adjacent explosion-proof crane, thereby slowing down and stopping the explosion-proof crane. When the first and second protections still cannot prevent the explosion-proof crane from colliding, the anti-collision blocks will contact and collide. The kinetic energy of the explosion-proof crane has been reduced when it is repelled by the magnetic repulsion parts. When it cannot stop, it will collide with the anti-collision block of the adjacent explosion-proof crane with the minimum kinetic energy. The two colliding anti-collision blocks will not produce mechanical sparks, which meets the explosion-proof requirements and realizes the third protection function.

[0018] Through the above arrangement, the present application can prevent the explosion caused by sparks generated during the collision of explosion-proof cranes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the anti-collision device for explosion-proof cranes in this application; Figure 2 This is the module connection structure diagram of the explosion-proof crane anti-collision device for this application; Figure 3 This is a schematic diagram of the installation structure of the explosion-proof crane anti-collision device for this application; Figure 4 This is a schematic diagram of the structure of the brake and brake lifting mechanism of this application; Figure 5 A flow chart of the anti-collision method for explosion-proof cranes in this application; Among them: 1. Anti-collision device for explosion-proof crane; 11. Mounting frame; 12. Distance sensor; 13. Magnetic repulsion member; 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. Sound and light alarm; 2. Ground beam; 3. Wheels. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the specific implementation manner of the present application will be clearly and completely described below in conjunction with the drawings in the implementation manner of the present application.

[0021] like Figure 1 As shown, the present application provides an explosion-proof crane anti-collision device 1, which includes: a mounting frame 11, a distance sensor 12, a magnetic repulsion member 13, an anti-collision block 14 and an anti-collision block bracket 15.

[0022] In the present application, two groups of anti-collision devices 1 for explosion-proof cranes are provided, and the two groups of anti-collision devices 1 for explosion-proof cranes are respectively arranged at the front end and the rear end of the ground beam 2 of the explosion-proof crane, and are respectively used for anti-collision between the explosion-proof crane and the explosion-proof crane adjacent to the front side, and anti-collision between the explosion-proof crane and the explosion-proof crane adjacent to the rear side.

[0023] It should be noted that when the explosion-proof crane is an explosion-proof crane at the end of the bridge, anti-collision devices are also provided at the front and rear ends of the explosion-proof crane ground beam 2. The reason is that a steel limiting component is usually provided at the end of the bridge to limit and prevent the explosion-proof crane from falling out. In order to prevent the explosion-proof crane from colliding with the limiting component and causing mechanical sparks, an anti-collision device is provided at the opposite end of the explosion-proof crane and the limiting component.

[0024] The mounting frame 11 is fixedly mounted on 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, and is mainly used to support the main beam and outriggers of the explosion-proof crane, so that the explosion-proof crane can stably walk on the guide rail.

[0025] The distance sensor 12 is fixedly mounted on the mounting frame 11, and is used to detect the distance between the anti-collision crane and the adjacent explosion-proof crane. In the present application, the distance sensor 12 is an optical distance sensor 12, an infrared distance sensor 12, an ultrasonic distance sensor 12, etc.

[0026] The magnetic repulsion member 13 is fixedly installed at the end of the explosion-proof crane ground beam 2, and the mounting frame 11 is arranged outside the magnetic repulsion member 13. By utilizing the principle of repulsion of the same polarity between the magnetic repulsion member 13 at the end of the ground beam 2 of the anti-collision crane and the magnetic repulsion member 13 at the end of the ground beam 2 of the adjacent explosion-proof crane, the explosion-proof crane can be decelerated. In this way, by decelerating the explosion-proof crane, a longer reaction time can be reserved for the driver, so that the driver has enough time to decelerate and brake the explosion-proof crane, reducing safety hazards.

[0027] It should be noted that the magnetic repulsion member 13 can be a strong permanent magnet; or, the magnetic repulsion member 13 is a strong electromagnet. When the distance between the anti-collision crane and the adjacent explosion-proof crane is greater than the safety distance, the strong electromagnet is not turned on; when the distance between the anti-collision crane and the adjacent explosion-proof crane is less than or equal to the safety distance, the strong electromagnet is turned on.

[0028] The anti-collision block bracket 15 is fixedly mounted on one end of the mounting frame 11 away from the end of the explosion-proof crane ground beam 2. The anti-collision block bracket 15 is in an arc shape that bulges toward one end away from the end of the explosion-proof crane ground beam 2. The anti-collision block 14 is fixedly mounted on the bulge of the anti-collision block bracket 15. When the anti-collision crane collides with an adjacent explosion-proof crane, the anti-collision block 14 of the anti-collision crane collides and contacts with the anti-collision block 14 of the adjacent explosion-proof crane to avoid direct contact between the steel parts of the anti-collision crane and the adjacent explosion-proof crane to generate mechanical sparks, thereby preventing explosions caused by mechanical sparks in an explosive environment. The arc-shaped anti-collision block bracket 15 deforms during a collision, playing a buffering role during a collision.

[0029] Specifically, the anti-collision block 14 is made of copper material, which is not easy to age and deform, nor easy to generate static electricity, and will not generate mechanical sparks when colliding. Therefore, the anti-collision block 14 made of copper material can prevent the anti-collision block 14 made of rubber anti-collision block 14, nylon block and other materials from aging over time or losing the anti-collision function due to multiple collisions and deformation, and can prevent the anti-collision block 14 made of steel material from generating mechanical sparks when colliding with each other, thereby preventing the explosion caused by mechanical sparks in an explosive environment.

[0030] The above-mentioned explosion-proof crane anti-collision device 1 works as follows: The distance sensor 12 is started to detect the distance between the anti-collision crane and the adjacent explosion-proof crane through the distance sensor 12; If the distance between the anti-collision crane and the adjacent explosion-proof crane is less than the safety distance, the sound and light alarm 23 will give an alarm, otherwise the distance sensor 12 continues to detect the distance between the distance sensor 12 and the end of the ground beam 2 of the adjacent explosion-proof crane.

[0031] The operator observes the alarm signal of the sound and light alarm 23 and operates the explosion-proof crane to slow down or stop to avoid collision, thereby realizing the first level of protection function; If the explosion-proof crane does not stop, the magnetic repulsion member 13 at the end of the ground beam 2 of the present anti-collision crane interacts with the magnetic repulsion member 13 at the end of the ground beam 2 of the adjacent explosion-proof crane, thereby slowing down or stopping the explosion-proof crane, thus realizing the second level of protection function; If the explosion-proof crane still does not stop, the anti-collision block 14 of the anti-collision crane collides with the anti-collision block 14 of the adjacent explosion-proof crane, thereby slowing down the explosion-proof crane and stopping it. When the first and second protections still cannot prevent the explosion-proof crane from colliding, the anti-collision block 14 contacts and collides. The kinetic energy of the explosion-proof crane has been reduced when it is repelled by the magnetic repelling member 13. When it cannot stop, it will collide with the anti-collision block 14 of the adjacent explosion-proof crane with the minimum kinetic energy. The two colliding anti-collision blocks 14 will not generate mechanical sparks, which meets the explosion-proof requirements and realizes the third protection function.

[0032] Through the above arrangement, the present application can prevent the explosion caused by sparks generated during the collision of explosion-proof cranes.

[0033] like Figure 2 As shown, as an implementation, 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.

[0034] Among them, the brake 16 is located on at least one side of the explosion-proof crane ground beam 2. The braking principle of the brake 16 is: to limit the rotation of the wheels 3 of the explosion-proof crane so that the wheels 3 of the explosion-proof crane are in friction contact with the wheel 3 track, thereby playing a braking role of the explosion-proof crane.

[0035] The brake lifting mechanism 17 is connected to the brake 16 to drive the brake 16 to lift, so that the brake 16 falls on / off 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 the anti-collision crane collides with the adjacent explosion-proof crane, the contact switch 19 of the anti-collision crane contacts the contact switch 19 of the adjacent explosion-proof crane, so that the contact switch 19 is triggered.

[0036] like Figure 4 As shown, specifically, the brake lifting mechanism 17 includes: a brake motor 171 , a steel wire rope 172 , a pulley 173 , a slide rail 174 and a slider 175 .

[0037] Among them, the brake motor 171 is installed on the explosion-proof crane beam 2, and the brake motor 171 is connected to the wire rope 172 to drive the wire rope 172 to reel and unreel. The pulley 173 is installed at the end of the explosion-proof crane beam 2, and the wire rope 172 is slidably connected to the pulley 173, and the pulley 173 is used to support and guide the wire rope 172. The slider 175 is fixedly connected to the wire rope 172, the slide rail 174 is fixedly connected to the explosion-proof crane beam 2, and the slider 175 is fixedly connected to the brake 16 to drive the brake 16 to rise and fall.

[0038] In the present application, the slide rail 174 is in an arc shape, and the two ends of the slide rail 174 are respectively located at the end of the explosion-proof crane ground beam 2 and near the bottom of the wheel 3, so that the brake 16 is guided to the wheel 3. Further, a limit block 176 is fixed at the lowest end of the slide rail 174. When the slide rail 174 drives the brake 16 to descend to the lowest end of the slide rail 174, the limit block 176 plays a role in limiting the slider 175 to prevent the slider 175 and the brake 16 from falling out of the slide rail 174.

[0039] More specifically, the brake 16 is a brake shoe. Brake shoe, commonly known as iron shoe, is a brake tool commonly used in railway shunting operations, mainly used to prevent locomotives and vehicles from slipping. It consists of two parts, a bottom and a head. After the tread of the wheel 3 hits the iron shoe, the head is used to clamp the wheel 3, thereby playing a braking role. The working principle of the brake shoe is to place the iron shoe on the rail. When the wheel 3 presses on the iron shoe, the rolling friction between the wheel and the rail becomes sliding friction, thereby increasing the friction force, so that the slipping locomotive vehicle slows down as soon as possible to achieve the purpose of stopping. In the present application, the brake shoe is made of copper alloy.

[0040] The contact switch 19 is connected to the brake lifting mechanism control circuit 18. 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, restricting the rotation of the wheels 3 of the explosion-proof crane, so that the wheels 3 of the explosion-proof crane and the wheel 3 track are in friction contact, thereby playing a braking role for the explosion-proof crane. The contact switch 19 is connected to the circuit breaker 20, and the circuit breaker 20 is connected to the power circuit of the explosion-proof crane. After the contact switch 19 is triggered, the circuit breaker 20 controls the power circuit of the explosion-proof crane to disconnect, and the explosion-proof crane loses power, slows down and stops, realizing the fourth protection function.

[0041] like Figure 2 and Figure 3 As shown, as an 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.

[0042] Among them, the combustible gas detection module 21 is installed on the explosion-proof crane trolley, and the combustible gas detection module 21 is used to detect combustible gas in the environment. The combustible dust detection module 22 is installed at the end of the explosion-proof crane ground beam 2, and the combustible dust detection module 22 is used to detect combustible dust in the environment. The sound and light 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 that the distance is less than the preset distance, or the combustible gas detection module 21 detects combustible gas, or the combustible dust detection module 22 detects combustible dust, the sound and light alarm 23 alarms to realize the fifth protection function.

[0043] The explosion-proof crane anti-collision device 1 provided above has the following beneficial effects: 1. Multiple protections to improve safety: The explosion-proof crane anti-collision device 1 provided in the present application integrates multiple protection mechanisms such as a distance sensor 12, a magnetic repulsion member 13, an anti-collision block 14 and an anti-collision block bracket 15, which can effectively slow down or prevent the collision of the crane in different situations and significantly reduce safety hazards.

[0044] 2. Prevent mechanical sparks and ensure explosion-proof environment: By using the anti-collision block 14 made of copper material and adopting the magnetic repulsion principle, mechanical sparks generated by direct contact between steel parts are avoided, explosion-proof requirements are met, and operation safety in explosive environments is guaranteed.

[0045] 3. Intelligent monitoring and alarm: The distance sensor 12 monitors the distance between cranes in real time. Once the distance is less than the safe distance, the sound and light alarm 23 is triggered to remind the operator to take timely measures to avoid collision.

[0046] 4. Emergency brake function: When a collision is unavoidable, the braking system can be quickly activated to limit the rotation of the crane wheel 3 through devices such as brake shoes, thereby achieving emergency braking and further reducing the risk of collision.

[0047] 5. Strong environmental adaptability: 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 gas and dust in the working environment in real time, and trigger an alarm once a dangerous situation is detected, thereby enhancing the environmental adaptability of the device.

[0048] This application's multi-protective synergy: 1. Each component complements each other to form a complete protection system: Components such as the distance sensor 12, the magnetic repulsion member 13, the anti-collision block 14 and the anti-collision block bracket 15 each assume different protection functions, complement each other, and together constitute a complete protection system to ensure the safety of the crane in different situations.

[0049] 2. Combination of intelligent monitoring and manual operation: The intelligent monitoring system can monitor the distance between cranes and the concentration of combustible gas and dust in the environment in real time. Once an abnormal situation is detected, an alarm will be triggered to remind the operator to take measures. At the same time, the operator can also manually operate the crane to slow down or stop in time according to the alarm signal, realizing the organic combination of intelligent monitoring and manual operation.

[0050] 3. Emergency braking combined with conventional braking: When conventional braking cannot effectively prevent a collision, the emergency braking system can be activated quickly and achieve emergency braking through brake shoes and other devices. This combination of emergency braking and conventional braking further improves the safety of the crane.

[0051] 4. Improving operational efficiency and ensuring safety are equally important: The device not only ensures safety, but also takes into account operating efficiency. For example, by monitoring the crane spacing and environmental conditions in real time through the intelligent monitoring system, potential dangers can be discovered in time and corresponding measures can be taken, thus avoiding operation interruptions and losses caused by accidents such as collisions or explosions. At the same time, the device has a reasonable structural design, is easy to operate, and is also easy to maintain and manage.

[0052] like Figure 5 As shown, the present application also provides an explosion-proof crane anti-collision method, the explosion-proof crane anti-collision method comprising: The distance sensor 12 is started to detect the distance between the anti-collision crane and the adjacent explosion-proof crane through the distance sensor 12; If the distance between the anti-collision crane and the adjacent explosion-proof crane is less than the safety distance, an alarm is given through the sound and light alarm 23, otherwise the distance sensor 12 continues to detect the distance between the distance sensor 12 and the end of the ground beam 2 of the adjacent explosion-proof crane; The operator observes the alarm signal of the sound and light alarm 23 and operates the explosion-proof crane to slow down or stop; If the explosion-proof crane does not stop, the magnetic repulsion member 13 at the end of the ground beam 2 of the present anti-collision crane interacts with the magnetic repulsion member 13 at the end of the ground beam 2 of the adjacent explosion-proof crane, thereby slowing down or stopping the explosion-proof crane; If the explosion-proof crane has not stopped yet, the anti-collision block 14 of the present anti-collision crane collides with the anti-collision block 14 of the adjacent explosion-proof crane, thereby causing the explosion-proof crane to slow down and stop.

[0053] The anti-collision method for explosion-proof cranes provided in this application realizes effective prevention and control of 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: 1. Early warning to reduce collision risk: The method first starts the distance sensor 12 to monitor the distance between the anti-collision crane and the adjacent explosion-proof crane in real time. When the distance is less than the preset safety distance, an alarm signal is immediately sent out through the sound and light alarm 23 to remind the operator to pay attention and take corresponding deceleration or stop measures. This step can provide early warning and provide the operator with enough time to deal with potential collision risks, thereby greatly reducing the incidence of collision accidents.

[0054] 2. Multi-level protection to enhance security: The method adopts a multi-level protection mechanism. After the sound and light alarm 23 sounds an alarm, if the operator fails to take timely measures, the magnetic repulsion piece 13 at the end of the ground beam 2 of the anti-collision crane will interact with the magnetic repulsion piece 13 at the end of the ground beam 2 of the adjacent explosion-proof crane, and use the principle of like polarity repelling to slow down or stop the explosion-proof crane. If this step still fails to prevent the collision, the anti-collision block 14 will serve as the last line of defense and collide with the anti-collision block 14 of the adjacent explosion-proof crane to further slow down or prevent the collision. This multi-level protection mechanism can ensure that the crane can be effectively protected from collision damage in a variety of situations.

[0055] 3. Avoid mechanical sparks and ensure explosion-proof environment: Since explosion-proof cranes usually work in an environment where explosive gas may exist, it is crucial to avoid mechanical sparks. The method avoids mechanical sparks generated by direct contact between steel parts by using a magnetic repulsion member 13 and a collision prevention block 14 made of copper material, thereby ensuring the safety of the explosion-proof environment.

[0056] 4. Improve work efficiency and safety: This method not only improves the safety of explosion-proof cranes, but also improves operating efficiency to a certain extent. Through early warning and multi-level protection mechanisms, operators can work more at ease without having to worry about collision accidents. This helps reduce downtime and maintenance costs caused by collision accidents, thereby improving overall operating efficiency.

[0057] 5. Easy to implement and maintain: The equipment required for the method (such as the distance sensor 12, the sound and light alarm 23, the magnetic repulsion member 13 and the anti-collision block 14, etc.) are all easily available components, so the implementation is relatively simple. At the same time, the maintenance of these equipment is also relatively easy, which can greatly reduce the maintenance cost and time.

[0058] In summary, the anti-collision method for explosion-proof cranes provided in this application has the beneficial effects of early warning, multi-level protection, avoiding mechanical sparks, improving operation efficiency and safety, and easy implementation and maintenance. The method can effectively prevent and control the collision risk during the operation of explosion-proof cranes, and provide operators with a safer and more efficient working environment.

[0059] As a way of implementation, the anti-collision method of explosion-proof crane also includes: If the explosion-proof crane does not stop, the contact switch 19 of the anti-collision crane contacts the contact switch 19 of the adjacent explosion-proof crane, so that the contact switch 19 is triggered. After the contact switch 19 is triggered, the brake lifting mechanism control circuit 18 controls the brake lifting mechanism 17 so that the brake 16 falls on the explosion-proof crane track, thereby braking the explosion-proof crane, and then slowing down and stopping the explosion-proof crane.

[0060] On the basis of the original anti-collision method of explosion-proof crane, a linkage mechanism between contact switch 19 and brake lifting mechanism control circuit 18 is added. This improvement further enhances the reliability and safety of the anti-collision system. The following are the new beneficial effects: 1. Multiple braking protection: When the explosion-proof crane has not stopped after the sound and light alarm and the magnetic repulsion member 13 have been activated, the newly added contact switch 19 will serve 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 fall on the explosion-proof crane track to achieve emergency braking. This mechanism provides multiple braking guarantees for the explosion-proof crane, ensuring that it can stop running quickly and effectively even in extreme situations.

[0061] 2. Improve braking response speed: The design of the brake lifting mechanism control circuit 18 greatly speeds up the response speed of the brake 16. Once the contact switch 19 is triggered, the control circuit will immediately start the brake lifting mechanism 17, causing the brake 16 to quickly drop and clamp the track, thereby achieving a 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.

[0062] 3. Enhance system stability and reliability: The newly added contact switch 19 and brake lifting mechanism control circuit 18 are both reliable components that have been rigorously tested and verified. Their addition not only improves the overall stability of the anti-collision system, but also enhances the reliability of the system. Even in harsh working environments, these components can maintain stable performance and ensure the normal operation of the anti-collision system.

[0063] 4. Reduce maintenance costs: Although new components such as the contact switch 19 and the brake lifting mechanism control circuit 18 are added, these components are common and easily available. Therefore, the maintenance cost is not increased too much. On the contrary, the addition of these components improves the reliability and stability of the system and reduces the downtime and maintenance costs caused by system failures.

[0064] In summary, the linkage mechanism of the newly added contact switch 19 and the brake lifting mechanism control circuit 18 provides multiple braking guarantees for the anti-collision method of the explosion-proof crane, improves the braking response speed, enhances the system stability and reliability, and reduces the maintenance cost. This improvement will help improve the safety and reliability of the explosion-proof crane and further reduce the risk of collision accidents.

[0065] As a way of implementation, the anti-collision method of explosion-proof crane also includes: If the explosion-proof crane does not stop, the contact switch 19 of the anti-collision crane contacts the contact switch 19 of the adjacent explosion-proof crane, so that the contact switch 19 is triggered. After the contact switch 19 is triggered, the circuit breaker 20 controls the power circuit of the explosion-proof crane to disconnect, thereby slowing down and stopping the explosion-proof crane.

[0066] In the anti-collision method of explosion-proof crane, a newly added mechanism of controlling the disconnection of the power circuit of explosion-proof crane by triggering the circuit breaker 20 through the contact switch 19 provides a more direct and effective braking means for the anti-collision system. The beneficial effects of this improvement are mainly reflected in the following aspects: 1. The emergency braking effect is significantly improved: When the explosion-proof crane fails to stop due to the protective measures such as the sound and light alarm, the magnetic repulsion member 13 and the brake lifting mechanism 17, the triggering of the contact switch 19 will directly cause the 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 and effectively prevent the occurrence of collision accidents. Compared with the previous braking method, this method is faster and more direct, and the braking effect is significantly improved.

[0067] 2. Enhanced system security: Braking is achieved by cutting off the power supply, which fundamentally eliminates the power source for the crane to continue to operate. This measure not only improves the braking effect, but also enhances the safety of the entire anti-collision system. In extreme cases, even if other braking measures fail, cutting off the power supply can ensure that the crane will not continue to move, thereby protecting the safety of the operator and the surrounding environment.

[0068] 3. Reduced maintenance costs: Although new components such as contact switch 19 and circuit breaker 20 are added, these components are common and easily available. In terms of maintenance, the replacement and repair of these components are relatively simple and will not increase maintenance costs too much. At the same time, the addition of these components improves the reliability and stability of the system and reduces downtime and maintenance costs caused by system failures.

[0069] 4. Wide range of applications: This anti-collision 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 wide applicability and can provide safer and more reliable anti-collision protection for various types of cranes.

[0070] In summary, the newly added mechanism of controlling the disconnection of the explosion-proof crane power circuit by triggering the circuit breaker 20 through the contact switch 19 provides a more direct and effective braking method for the anti-collision system. This improvement not only significantly improves the emergency braking effect and enhances the system safety, but also reduces the maintenance cost and has wide applicability. These beneficial effects will help improve the overall safety and reliability of explosion-proof cranes and further reduce the risk of collision accidents.

[0071] As a way of implementation, the anti-collision method of explosion-proof crane also includes: The acceleration of the explosion-proof crane is collected by an accelerometer, and the speed of the motor and gearbox of the explosion-proof crane is collected by a speed sensor, so as to obtain the speed of the explosion-proof crane; Receive real-time data sent by adjacent explosion-proof cranes through wireless communication modules, the real-time data including the speed and acceleration of the explosion-proof cranes; The relative position, relative speed and relative acceleration of the explosion-proof crane and the adjacent explosion-proof crane are calculated by the speed and acceleration of the explosion-proof crane, the speed and acceleration of the adjacent explosion-proof crane and the distance between the anti-collision crane and the adjacent explosion-proof crane; The possible collision time between the explosion-proof crane and the adjacent explosion-proof crane is predicted through the kinematic model; Different safety distances are set according to the safety factor. When the distance between the anti-collision crane and the adjacent explosion-proof crane is less than the safety distance, the sound and light alarm 23 is triggered to sound an alarm.

[0072] In the anti-collision method of 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 anti-collision system. The beneficial effects of this improvement are mainly reflected in the following aspects: 1. Improve the accuracy of collision warning: By collecting the acceleration and speed of the explosion-proof crane in real time through the accelerometer and speed sensor, and combining the wireless communication module to receive the real-time data of the adjacent crane, the system can accurately obtain the dynamic information of the two cranes. On this basis, by calculating the relative position, relative speed and relative acceleration, the system can more accurately predict the possible collision, thereby triggering the sound and light alarm 23 in advance, providing the operator with more ample reaction time.

[0073] 2. Enhance the intelligence level of the system: The introduction of the kinematic model enables the system to intelligently predict collision risks based on current and future movement trends. This predictive capability not only improves the timeliness of collision warnings, but also enables the system to flexibly adjust the safety distance according to specific circumstances to adapt to different operating environments and operational requirements. This increase in intelligence helps reduce false alarms and missed alarms and improves the overall performance of the system.

[0074] 3. Improve system reliability and stability: By collecting data from multiple sensors and conducting comprehensive analysis, the system can assess collision risks more comprehensively and accurately. This multiple data verification and cross-validation mechanism enhances the reliability and stability of the system. Even if a single sensor fails or data is abnormal, the system can maintain normal operation through data from other sensors to ensure the effectiveness of the collision avoidance function.

[0075] 4. Optimize operating experience and improve work efficiency: The intelligent anti-collision system not only improves safety, but also optimizes the operating experience. Operators can focus more on their tasks without having to worry about the risk of collision. At the same time, by accurately predicting the collision time and providing early warning, the system helps reduce downtime and work interruptions caused by emergency braking or avoidance, thereby improving overall work efficiency.

[0076] 5. Easy to expand and upgrade: The sensors, wireless communication modules, and kinematic models used in this method are all mature and easily expandable components. With the continuous advancement of technology and the changing needs, the system can be easily upgraded and expanded to adapt to new operating environments and operational requirements. This easy expansion and upgrade feature enables the system to continue to maintain its leading position and provide operators with safer and more efficient anti-collision protection.

[0077] In summary, the anti-collision method for explosion-proof cranes that introduces technologies such as accelerometers, speed sensors, wireless communication modules, and kinematic model prediction not only improves the accuracy of collision warnings and the intelligence level of the system, but also enhances the reliability and stability of the system, optimizes the operating experience, and improves operating efficiency. These beneficial effects will help improve the overall safety and reliability of explosion-proof cranes and further reduce the risk of collision accidents.

[0078] Specifically, the calculation formula for the safety distance is: D = (V1 + V2) × t + k, where D is the safety 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.

[0079] In the explosion-proof crane anti-collision system, the calculation formula of the safety distance D = (V1 + V2) × t + k has a significant beneficial effect. The following is a detailed analysis of this formula and its beneficial effects: Safety distance calculation formula analysis: D: Indicates the safety distance, which is the minimum distance that should be maintained between two explosion-proof cranes to prevent collision.

[0080] V1: Indicates the speed of this explosion-proof crane.

[0081] V2: Indicates the speed of the adjacent explosion-proof crane.

[0082] t: represents the operator's reaction time, that is, the time required from discovering the potential collision risk to taking braking measures.

[0083] k: represents the safety factor, which is used to consider the impact of various uncertain factors (such as system error, operation error, etc.) on the safety distance to ensure that the calculated safety distance has sufficient margin.

[0084] The above configuration has the following beneficial effects: 1. Improve the accuracy of collision warning: By taking into account the speed of the two cranes, the operator's reaction time and the safety factor, the formula can calculate a more accurate safety distance. This helps the system issue a warning in time before the potential risk of collision occurs, giving the operator enough reaction time.

[0085] 2. Enhance the adaptability and flexibility of the system: The safety factor k in this formula can be adjusted according to actual conditions. For example, in complex or high-risk operating environments, the value of the safety factor k can be appropriately increased to ensure a larger safety margin. This flexibility enables the system to adapt to different operating environments and operational requirements.

[0086] 3. Optimize work efficiency: By accurately calculating the safety distance, the system can allow the two cranes to approach each other at a higher speed while ensuring safety, thereby improving work efficiency to a certain extent. At the same time, it can reduce work interruptions and waiting time caused by overly conservative safety distance settings.

[0087] 4. Improve system reliability and stability: The formula is based on mature physical principles and mathematical models and has high reliability and stability. By monitoring the speed and position information of the two cranes in real time and combining the operator's reaction time and safety factor for calculation, the system can continuously and accurately assess the risk of collision and ensure the safe operation of explosion-proof cranes.

[0088] 5. Easy to maintain and upgrade: The implementation of this formula relies on hardware devices such as sensors and controllers and corresponding software algorithms. With the continuous advancement of technology and the changing needs, these hardware devices and software algorithms can be easily upgraded and replaced to adapt to new operating environments and operational requirements. This easy maintenance and upgrade feature enables the system to continue to maintain its leading position and provide operators with safer and more efficient anti-collision protection.

[0089] In summary, the calculation formula of the safety distance D = (V1 + V2) × t + k has a significant beneficial effect in the anti-collision system of explosion-proof cranes. It can not only improve the accuracy of collision warning, enhance the adaptability and flexibility of the system, but also optimize the operation efficiency, improve the reliability and stability of the system, and facilitate the maintenance and upgrade of the system.

[0090] It should be noted that the words "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not indicate a quantitative limitation, but indicate the existence of at least one. "Multiple" or "several" means at least two. Unless otherwise specified, words such as "front", "back", "left", "right", "bottom" and / or "top" are only for the convenience of description and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect.

[0091] The singular forms "a", "said" and "the" used in this specification and the 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" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0092] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. An explosion-proof crane anti-collision device, characterized in that: The explosion-proof crane anti-collision device comprises: A mounting frame, the mounting frame is fixedly mounted on the end of the ground beam of the explosion-proof crane; A distance sensor, the distance sensor is fixedly mounted on the mounting frame, and the distance sensor is used to detect the distance between the anti-collision crane and an adjacent explosion-proof crane; A magnetic repulsion member, the magnetic repulsion member is fixedly mounted on the end of the ground beam of the explosion-proof crane, and the mounting frame is arranged around the outside of the magnetic repulsion member; An anti-collision block and an anti-collision block bracket, wherein the anti-collision block bracket is fixedly installed on one end of the mounting frame away from the end of the explosion-proof crane ground beam, the anti-collision block bracket is in an arc shape that bulges toward the end away from the end of the explosion-proof crane ground beam, and the anti-collision block is fixedly installed on the bulge of the anti-collision block bracket.

2. The explosion-proof crane anti-collision device according to claim 1 is characterized in that: The explosion-proof crane anti-collision device also includes: A brake, wherein the brake is located on at least one side of the ground beam of the explosion-proof crane; A brake lifting mechanism, the brake lifting mechanism is connected to the brake to drive the brake to lift, so that the brake falls on / off the explosion-proof crane track; A brake lifting mechanism control circuit, wherein the brake lifting mechanism control circuit is connected to the brake lifting mechanism; A contact switch, the contact switch is installed at the end of the explosion-proof crane ground beam, the contact switch is connected to the brake lifting mechanism control circuit, and after the contact switch is triggered, the brake lifting mechanism control circuit controls the brake lifting mechanism so that the brake falls on the explosion-proof crane track; Circuit breaker, the contact switch is connected to the circuit breaker, the circuit breaker is connected to the power circuit of the explosion-proof crane, and after the contact switch is triggered, the circuit breaker controls the power circuit of the explosion-proof crane to be disconnected.

3. An explosion-proof crane anti-collision device according to claim 1 or 2, characterized in that: The explosion-proof crane anti-collision device also includes: A combustible gas detection module, wherein the combustible gas detection module is installed on an explosion-proof crane trolley; A combustible dust detection module, wherein the combustible dust detection module is installed at the end of the ground beam of the explosion-proof crane; The sound and light alarm is respectively connected to the distance sensor, the combustible gas detection module and the combustible dust detection module. 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, the sound and light alarm alarms.

4. The explosion-proof crane anti-collision device according to claim 2 is characterized in that: The brake lifting mechanism comprises: A brake motor, wherein the brake motor is installed on the ground beam of the explosion-proof crane; A steel wire rope, wherein the brake motor is connected to the steel wire rope to drive the steel wire rope to be wound and unwound; A pulley, the pulley is mounted on the end of the ground beam of the explosion-proof crane, and the steel wire rope is slidably connected to the pulley; A slide rail and a slider, wherein the slider is fixedly connected to the steel wire rope, the slide rail is fixedly connected to the ground beam of the explosion-proof crane, and the slider is fixedly connected to the brake to drive the brake to rise and fall.

5. An explosion-proof crane anti-collision device according to claim 2 or 4, characterized in that: The brake is a brake iron shoe.

6. An explosion-proof crane anti-collision method, characterized in that: include: Starting a distance sensor to detect the distance between the anti-collision crane and an adjacent explosion-proof crane through the distance sensor; If the distance between the anti-collision crane and the adjacent explosion-proof crane is less than the safety distance, an alarm is sounded through the sound and light alarm, otherwise the distance sensor continues to detect the distance between the distance sensor and the end of the ground beam of the adjacent explosion-proof crane; The operator observes the alarm signal of the sound and light alarm and operates the explosion-proof crane to slow down or stop; If the explosion-proof crane does not stop, the magnetic repulsion piece at the end of the ground beam of the present anti-collision crane interacts with the magnetic repulsion piece at the end of the ground beam of the adjacent explosion-proof crane, thereby slowing down or stopping the explosion-proof crane; If the explosion-proof crane still does not stop, the anti-collision block of the present anti-collision crane collides and contacts with the anti-collision block of the adjacent explosion-proof crane, thereby causing the explosion-proof crane to slow down and stop.

7. The anti-collision method for explosion-proof crane according to claim 6, characterized in that: The explosion-proof crane anti-collision method also includes: If the explosion-proof crane does not stop, the contact switch of the anti-collision crane contacts 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 so that the brake falls on the explosion-proof crane track, thereby braking the explosion-proof crane, and then slowing down and stopping the explosion-proof crane.

8. An explosion-proof crane anti-collision method according to claim 6 or 7, characterized in that: The explosion-proof crane anti-collision method also includes: If the explosion-proof crane does not stop, the contact switch of the anti-collision crane contacts the contact switch of the adjacent explosion-proof crane, causing the contact switch to be triggered. After the contact switch is triggered, the circuit breaker controls the explosion-proof crane power circuit to be disconnected, thereby slowing down and stopping the explosion-proof crane.

9. The anti-collision method for explosion-proof crane according to claim 6, characterized in that: The explosion-proof crane anti-collision method also includes: The acceleration of the explosion-proof crane is collected by an accelerometer, and the speed of the motor and gearbox of the explosion-proof crane is collected by a speed sensor, so as to obtain the speed of the explosion-proof crane; Receiving real-time data sent by an adjacent explosion-proof crane through a wireless communication module, wherein the real-time data includes the speed and acceleration of the explosion-proof crane; The relative position, relative speed and relative acceleration of the explosion-proof crane and the adjacent explosion-proof crane are calculated by the speed and acceleration of the explosion-proof crane, the speed and acceleration of the adjacent explosion-proof crane and the distance between the anti-collision crane and the adjacent explosion-proof crane; The possible collision time between the explosion-proof crane and the adjacent explosion-proof crane is predicted through the kinematic model; Different safety distances are set according to the safety factor. When the distance between the anti-collision crane and the adjacent explosion-proof crane is less than the safety distance, the sound and light alarm is triggered to alarm.

10. The anti-collision method for explosion-proof crane according to claim 9, characterized in that: The calculation formula of the safety distance is: D=(V1+V2)×t+k, where D is the safety 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.

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