Crane crane with laser ranging anti-collision device

Abstract

The utility model relates to the technical field of material handling equipment, and discloses a crane trolley with a laser ranging anti-collision device. The two groups of emergency stop devices are arranged in the travelling crane base, and the two groups of emergency stop devices are in direct contact with the moving wheels through friction plates on two groups of bent rods in the two groups of emergency stop devices, so that the kinetic energy of the travelling crane is quickly consumed by utilizing friction force, the travelling crane can be quickly stopped in emergency, and the safety of equipment and personnel is guaranteed; and the two sets of buffering mechanisms are arranged at the two ends of the traveling crane base correspondingly and work cooperatively through internal springs and spring dampers, the springs are responsible for energy storage buffering, the spring dampers are responsible for energy dissipation and stabilization, the buffering strength and energy consumption can be adjusted in a self-adaptive mode according to different collision conditions, and the image of collision on traveling crane is reduced in an all-around mode.

Description

Technical Field

[0001] This utility model relates to the field of material handling equipment technology, specifically a crane with a laser rangefinder anti-collision device. Background Technology

[0002] In modern industrial production and logistics warehousing, overhead cranes are indispensable material handling equipment, widely used in various large workshops, ports, warehouses, and other locations. With the continuous improvement of industrial automation and the increasing complexity of operating environments, higher requirements are being placed on the safety, reliability, and intelligence level of overhead cranes.

[0003] Traditional overhead cranes rely primarily on the operator's experience and visual judgment to avoid collisions during operation. This method is not only inefficient but also poses significant safety hazards. In complex working environments with obstructed visibility, operators may struggle to detect obstacles in time, increasing the risk of collisions between the overhead crane and surrounding equipment, buildings, or other overhead cranes. This can result in serious accidents such as equipment damage, cargo falling, or even personal injury. Furthermore, the braking systems of traditional overhead cranes have a slow response time, making it difficult to stop the crane quickly in emergencies and thus failing to effectively prevent collisions.

[0004] However, existing cranes equipped with laser ranging still have shortcomings in emergency stopping and buffering. Some emergency stopping devices have unsatisfactory braking effects and cannot stop the crane in a short time, affecting the safety of equipment and personnel. The buffering mechanism has a single buffering performance and cannot adaptively adjust the buffering force and energy consumption according to different collision situations, making it difficult to effectively reduce the impact of collisions on the crane. Therefore, developing a crane that can combine laser ranging technology and has efficient emergency stopping and intelligent buffering functions is of great significance for improving the safety and reliability of cranes. To solve the above problems, we propose a crane with a laser ranging anti-collision device. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a crane with a laser rangefinder collision avoidance device, thus solving the aforementioned problems.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a crane with a laser ranging and collision avoidance device, comprising:

[0007] Car base;

[0008] The vehicle base is rotatably mounted with two sets of movable wheels, and the two sets of movable wheels extend through the bottom of the vehicle base. A set of drive motors is fixedly mounted on one side of the vehicle base corresponding to the two sets of movable wheels, and the output shafts of the two sets of drive motors are fixedly connected to the movable wheels respectively.

[0009] A set of laser rangefinders is fixedly installed on each of the top two sides of the vehicle base, and both sets of laser rangefinders can receive and send laser signals.

[0010] The emergency stop devices are all located inside the crane base, and there are two sets. Both sets of emergency stop devices use friction plates on two sets of curved rods inside to directly contact the moving wheels, using friction to quickly dissipate the kinetic energy of the crane, ensuring that the crane can stop quickly in an emergency and protecting the safety of equipment and personnel.

[0011] The buffer mechanism consists of two sets, each located at one end of the vehicle base. Through the coordinated operation of internal springs and spring dampers, the springs are responsible for energy storage and buffering, while the spring dampers are responsible for energy dissipation and stabilization. It can adaptively adjust the buffering force and energy consumption according to different collision situations, thereby comprehensively reducing the impact of collisions on the vehicle.

[0012] Preferably, the emergency stop device includes an emergency stop motor and a threaded screw. An emergency stop motor is fixedly installed inside the trolley base on one side near the two sets of moving wheels, and the output shafts of the emergency stop motors are opposite to each other. A threaded screw is fixedly installed on the output shafts of the two sets of emergency stop motors.

[0013] Preferably, a set of rotating bases is provided inside the crane base on the side near the two sets of threaded screws, and the ends of the two sets of threaded screws opposite to the two sets of emergency stop motors are rotatably installed in the two sets of rotating bases, and a set of nut connecting blocks is rotatably installed in the middle of the two sets of threaded screws respectively.

[0014] Preferably, the emergency stop device further includes a connecting rod and a bent rod. The two ends of the nut connecting block are respectively hinged to a swing rod, and a connecting rod is respectively hinged to the side of the two swing rods near the emergency stop motor, and a bent rod is respectively hinged to the side of the two swing rods away from the nut connecting block.

[0015] Preferably, a set of rotating shafts is fixedly installed inside the crane base on both sides near the emergency stop motor, and the ends of the two sets of connecting rods opposite to the two sets of swing rods are rotatably mounted together with the two sets of rotating shafts. The ends of the two sets of bent rods opposite to the nut connecting block extend towards the side of the moving wheel, and the distance between the two sets of bent rods is greater than the thickness of the moving wheel. A set of friction plates is fixedly installed on the side of the two sets of bent rods near the moving wheel.

[0016] Preferably, the buffer mechanism includes a base, a top cover, and contact posts. A set of bases is fixedly installed at both ends of the vehicle base, and the top of the two sets of bases is slidably sleeved with the hollowed-out top. A set of contact posts is fixedly installed on both sides of the top of the top of the top cover.

[0017] Preferably, the buffer mechanism further includes a fixed rod, sliding rings, and a swing rod. The fixed rod is fixedly installed inside the base. A set of sliding rings is slidably installed at both ends of the fixed rod. A set of swing rods is hinged to the top of each of the two sets of sliding rings.

[0018] The top of the inner part of the cover is provided with a crossbeam, and the two sets of swing rods are respectively hinged to the crossbeam on the side away from the sliding ring.

[0019] Preferably, a spring is sleeved in the middle of the fixing rod, and the two ends of the spring are fixedly installed together with two sets of sliding rings.

[0020] Preferably, two sets of spring dampers are fixedly installed on the side of the base near the fixed rod, and the top ends of the two sets of spring dampers are fixedly installed together with the crossbeam through connecting rods.

[0021] Compared with the prior art, this utility model provides a crane with a laser rangefinder collision avoidance device, which has the following advantages:

[0022] 1. This crane equipped with a laser rangefinder collision avoidance device addresses the issue of slow braking response in traditional crane braking systems, which often fail to stop quickly in emergencies, leading to frequent collisions. The emergency stop device of this crane employs a unique symmetrical reverse drive design. When an emergency stop signal is triggered, the output shafts of two emergency stop motors rotate in opposite directions, driving the threaded screw to rotate in the opposite direction. Through precise transmission via a nut connecting block, connecting rod, swing rod, and bending rod, the friction plates on the bending rod quickly and symmetrically grip the moving wheel, efficiently dissipating the crane's kinetic energy in a short time using friction, achieving rapid braking. Compared to traditional braking systems, this emergency stop device offers faster braking response and more stable braking force, significantly reducing braking time and distance. Even in emergencies at high speeds, it ensures rapid stopping of the crane, effectively preventing collisions and providing a solid guarantee for equipment and personnel safety.

[0023] 2. This crane equipped with a laser rangefinder anti-collision device addresses the limitations of traditional cranes' buffer mechanisms. Traditional cranes rely on simple buffering mechanisms that struggle to adjust the buffering force according to different collision scenarios, failing to effectively absorb collision energy and easily causing equipment damage. This device's buffering mechanism achieves intelligent adaptive buffering through the coordinated operation of springs and spring dampers. When the crane is impacted, the contact post transfers the impact force to the upper cover, which in turn moves the swing arm and sliding ring, compressing the spring to store elastic potential energy and initially mitigating the impact force. Simultaneously, the spring damper utilizes its damping characteristics to dissipate the collision energy and suppress spring rebound, preventing secondary impacts. This combination automatically adjusts the buffering force and energy consumption based on the intensity and speed of the collision. Whether it's a minor scrape or a severe impact, it effectively reduces the impact on the crane, protects equipment safety, and extends equipment lifespan. Compared to traditional buffer mechanisms, it offers greater practicality and reliability. Attached Figure Description

[0024] Figure 1 This is a front view schematic diagram of the crane base of this utility model;

[0025] Figure 2 This is a cross-sectional view of the crane base of this utility model;

[0026] Figure 3 This is a cross-sectional schematic diagram of the buffer mechanism of this utility model;

[0027] Figure 4 This is a cross-sectional schematic diagram of the buffer mechanism of this utility model.

[0028] In the diagram: 1. Crane base; 2. Casters; 3. Drive motor; 4. Buffer mechanism; 5. Laser rangefinder; 6. Emergency stop motor; 7. Threaded screw; 8. Nut connecting block; 9. Shaft; 10. Connecting rod; 11. Bent rod; 12. Base; 13. Top cover; 14. Contact post; 15. Fixed rod; 16. Sliding ring; 17. Swing rod; 18. Spring; 19. Spring damper. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-4 A crane with a laser rangefinder collision avoidance device includes:

[0031] Car base 1;

[0032] Two sets of movable wheels 2 are rotatably installed inside the vehicle base 1, and the two sets of movable wheels 2 extend through the bottom of the vehicle base 1. A set of drive motors 3 is fixedly installed on one side of the vehicle base 1 corresponding to the two sets of movable wheels 2, and the output shafts of the two sets of drive motors 3 are fixedly connected to the movable wheels 2 respectively.

[0033] A set of laser rangefinders 5 are fixedly installed on both sides of the top of the vehicle base 1, and both sets of laser rangefinders 5 can receive and send laser signals.

[0034] The emergency stop devices are all installed inside the crane base 1, and there are two sets. Both sets of emergency stop devices directly contact the moving wheels 2 through the friction plates on the two sets of curved rods 11 inside, and use friction to quickly consume the kinetic energy of the crane, so as to ensure that the crane can stop quickly in an emergency and protect the safety of equipment and personnel.

[0035] The buffer mechanism 4 has two sets, which are respectively set at both ends of the vehicle base 1. Through the coordinated work of the internal spring 18 and spring damper 19, the spring 18 is responsible for energy storage and buffering, and the spring damper 19 is responsible for energy dissipation and stabilization. It can adaptively adjust the buffering force and energy consumption according to different collision situations, and comprehensively reduce the impact of collision on the vehicle.

[0036] The emergency stop device includes an emergency stop motor 6 and a threaded screw 7. An emergency stop motor 6 is fixedly installed inside the crane base 1 on one side near the two sets of moving wheels 2, and the output shafts of the emergency stop motors 6 are opposite to each other. A threaded screw 7 is fixedly installed on the output shafts of the two sets of emergency stop motors 6. When emergency braking of the crane is required, the two sets of emergency stop motors 6 are started. Because their output shafts are opposite to each other, they will drive the threaded screw 7 on their respective output shafts to rotate in opposite directions. This reverse rotation design ensures that the emergency stop devices on both sides work synchronously and symmetrically. The emergency stop motor 6 serves as a power source, and its rotational power is transmitted to the threaded screw 7 through the output shaft. The rotation of the threaded screw 7 is the starting condition for a series of subsequent braking actions, providing the power basis for the entire emergency stop process.

[0037] Inside the crane base 1, near the two sets of threaded screws 7, there is a set of rotating bases. The ends of the two sets of threaded screws 7 opposite to the two sets of emergency stop motors 6 are rotatably installed in the two sets of rotating bases. A set of nut connecting blocks 8 are rotatably installed in the middle of the two sets of threaded screws 7. When the threaded screws 7 rotate, the nut connecting blocks 8 will move linearly along the axial direction on the threaded screws 7 because they are threadedly engaged with the threaded screws 7. The characteristics of threaded transmission enable the rotational motion of the motor to be efficiently converted into linear motion. The moving distance and speed can be precisely controlled by adjusting the thread parameters. The linear movement of the nut connecting blocks 8 further transmits and converts the rotational power of the emergency stop motors 6. It is a key link connecting the motor power output and the subsequent mechanical transmission structure. Its movement directly drives the movement of subsequent components such as swing rods.

[0038] The emergency stop device also includes a connecting rod 10 and a bent rod 11. Two swing rods are hinged to both ends of the nut connecting block 8. A connecting rod 10 is hinged to the side of each swing rod closest to the emergency stop motor 6, and a bent rod 11 is hinged to the side of each swing rod away from the nut connecting block 8. When the nut connecting block 8 moves, it drives the swing rods hinged at both ends to swing. The swing rod rotates around the rotating shaft 9 via the hinged connecting rod 10, simultaneously pulling the bent rod 11 hinged at the other end towards the moving wheel 2. This hinged linkage structure converts the linear motion of the nut connecting block 8 into the swinging motion of the bent rod 11, changing the direction and form of motion. Through the transmission system composed of the connecting rod 10, the swing rod, and the rotating shaft 9, the conversion from linear motion to swinging motion is achieved, allowing the bent rod 11 to accurately approach the moving wheel 2, creating conditions for the friction plate to contact the moving wheel 2 for braking, and ensuring the precise execution of the braking action.

[0039] Inside the crane base 1, near the emergency stop motor 6, a set of rotating shafts 9 are fixedly installed on both sides. Two sets of connecting rods 10, at their ends away from the two sets of swing rods, are rotatably mounted together with the two sets of rotating shafts 9. Two sets of bent rods 11, at their ends away from the nut connecting block 8, extend towards one side of the moving wheel 2. The distance between the two sets of bent rods 11 is greater than the thickness of the moving wheel 2. A set of friction plates is fixedly installed on the side of each set of bent rods 11 near the moving wheel 2. After the bent rods 11 swing towards the moving wheel 2, the friction plates fixedly installed on them contact the moving wheel 2, using friction to resist the rotation of the moving wheel 2, thereby achieving emergency braking of the crane. The two sets of bent rods 11 are symmetrically arranged with a distance greater than the thickness of the moving wheel 2, ensuring that they can effectively hold the moving wheel 2 from both sides, enhancing the braking effect. The contact between the friction plates and the moving wheel 2 is the final action of the emergency stop device. The coordinated movement of all the preceding components is to achieve this braking effect, using friction to consume the kinetic energy of the crane, bringing it to a rapid stop and ensuring the safety of equipment and personnel.

[0040] The buffer mechanism 4 includes a base 12, a top cover 13, and contact posts 14. A set of bases 12 is fixedly installed at each end of the crane base 1, and the top of each set of bases 12 is hollowed out and slidably fitted with a top cover 13. A set of contact posts 14 is fixedly installed on both sides of the top of the top of the top cover 13. When the crane is subjected to a collision or impact, the contact posts 14 are first subjected to external force. Since the contact posts 14 are fixed to the top of the top cover 13, they will cause the top cover 13 to slide downwards within the base 12. The sliding connection structure between the base 12 and the top cover 13 provides guidance and support for the sliding of the top cover 13. The contact posts 14, as the impact component, transmit the impact force to the top cover 13. The sliding of the top cover 13 is the first step in the buffer mechanism's response to a collision; its sliding drives the subsequent components to move, thus achieving the buffering function. This structural design ensures that the impact force can be effectively transmitted to the interior of the buffer mechanism.

[0041] The buffer mechanism 4 also includes a fixed rod 15, a sliding ring 16 and a swing rod 17. The fixed rod 15 is fixedly installed inside the base 12. A set of sliding rings 16 are slidably installed at both ends of the fixed rod 15. A set of swing rods 17 are hinged to the top of the two sets of sliding rings 16.

[0042] The top of the inner part of the upper cover 13 is provided with a crossbeam. Two sets of swing rods 17 are hinged to the crossbeam on the side opposite to the sliding ring 16. When the upper cover 13 slides, the swing rods 17 hinged to it are driven to swing through the inner crossbeam. The swing rods 17 swing and pull the sliding ring 16 to slide on the fixed rod 15. The fixed rod 15 provides a sliding track for the sliding ring 16 to ensure the stability of its movement. The transmission structure formed by the swing rods 17 and the sliding ring 16 converts the linear sliding of the upper cover 13 into the linear sliding of the sliding ring 16, so that the external force can be transmitted to the spring 18 and the spring damper 19, which prepares for the absorption of buffer energy and ensures that the components of the buffer mechanism work together.

[0043] A spring 18 is sleeved in the middle of the fixed rod 15. The two ends of the spring 18 are fixedly installed together with two sets of sliding rings 16. When the sliding rings 16 slide on the fixed rod 15, they compress the spring 18 sleeved in the middle of the fixed rod 15. During the compression process, the spring 18 stores elastic potential energy, converting the kinetic energy generated by the collision into elastic potential energy, thus playing a preliminary buffering role. The spring 18 is a key component of the buffer mechanism for absorbing energy. Its elastic characteristics enable it to absorb energy through compression deformation at the moment of collision, reducing the impact force of the collision and providing a basis for the subsequent energy dissipation of the spring damper 19. The two work together to achieve efficient buffering.

[0044] Two sets of spring dampers 19 are fixedly installed on the side of the base 12 near the fixed rod 15. The tops of both sets of spring dampers 19 are fixedly installed to the crossbeam via connecting rods. The tops of the spring dampers 19 are connected to the crossbeam of the upper cover 13 via connecting rods. When the spring 18 is compressed, the spring damper 19 is also stretched or compressed. The spring damper 19 uses its own damping characteristics to consume the energy generated by the collision and suppress the rebound after the spring 18 is compressed, avoiding secondary impact. The spring damper 19 and the spring 18 work together. The spring 18 is responsible for energy storage and buffering, while the spring damper 19 is responsible for energy consumption and stability. The two work together to effectively improve the buffering effect and stability of the buffer mechanism, and comprehensively reduce the impact of collisions on driving.

[0045] Instructions for use

[0046] When the drive motor 3 drives the moving wheel 2 to rotate, the vehicle moves within the working area. Laser rangefinders 5 on both sides of the top of the vehicle base 1 continuously emit and receive laser signals, monitoring the distance between the vehicle and surrounding obstacles in real time. When the detected distance reaches a preset danger threshold, a warning signal is issued. In case of an emergency requiring rapid stopping, the emergency stop device is activated. The output shaft of the emergency stop motor 6 rotates in the reverse direction, driving the threaded screw 7 to rotate. Through threaded transmission, the nut connecting block 8 moves axially, and then through the transmission system consisting of connecting rod 10, swing rod, and rotating shaft 9, the bent rod 11 swings towards the moving wheel 2, causing the friction plate on the bent rod 11 to contact the moving wheel 2. Friction force is used to quickly dissipate the vehicle's kinetic energy, achieving emergency braking. If a collision occurs, the buffer mechanism 4 activates. At the moment of impact, the contact post 14 is forced to slide the upper cover 13 down inside the base 12. The upper cover 13 drives the swing rod 17 to swing through the crossbeam, pulling the sliding ring 16 to slide on the fixed rod 15. The compressed spring 18 stores elastic potential energy, initially buffering the impact force. At the same time, the spring damper 19 is stretched or compressed, using its damping characteristics to consume the impact energy and suppress the rebound of the spring 18, avoiding secondary impact, thereby reducing the impact of the collision on the vehicle in all aspects.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lifting trolley with laser ranging anti-collision device, characterized in that, include: Crane base (1); The vehicle base (1) is rotatably mounted with two sets of movable wheels (2), and the two sets of movable wheels (2) extend through the bottom end of the vehicle base (1). A set of drive motors (3) is fixedly installed on one side of the vehicle base (1) corresponding to the two sets of movable wheels (2), and the output shafts of the two sets of drive motors (3) are fixedly connected to the movable wheels (2). A set of laser rangefinders (5) are fixedly installed on both sides of the top of the vehicle base (1), and both sets of laser rangefinders (5) can receive and send laser signals. The emergency stop devices are all installed inside the vehicle base (1), and there are two sets. Both sets of emergency stop devices directly contact the moving wheels (2) through the friction plates on the two sets of internal bent rods (11), and use friction to quickly consume the vehicle's kinetic energy, so as to ensure that the vehicle can stop quickly in an emergency and protect the safety of equipment and personnel. The buffer mechanism (4) has two sets, which are respectively set at both ends of the vehicle base (1). The internal spring (18) and spring damper (19) work together. The spring (18) is responsible for energy storage and buffering, and the spring damper (19) is responsible for energy dissipation and stabilization. It can adaptively adjust the buffering force and energy consumption according to different collision situations, and reduce the impact of collision on the vehicle in all aspects.

2. The overhead travelling crane with laser ranging anti-collision device according to claim 1, characterized in that: The emergency stop device includes an emergency stop motor (6) and a threaded screw (7). An emergency stop motor (6) is fixedly installed on the side of the two sets of moving wheels (2) inside the trolley base (1), and the output shafts of the emergency stop motors (6) are opposite to each other. A threaded screw (7) is fixedly installed on the output shafts of the two sets of emergency stop motors (6).

3. The overhead travelling crane with laser ranging anti-collision device according to claim 2, characterized in that: Inside the crane base (1), a set of rotating bases is provided on the side of the two sets of threaded screws (7), and the ends of the two sets of threaded screws (7) away from the two sets of emergency stop motors (6) are rotatably installed in the two sets of rotating bases. A set of nut connecting blocks (8) are rotatably installed in the middle part of the two sets of threaded screws (7).

4. The overhead travelling crane with laser ranging anti-collision device according to claim 3, characterized in that: The emergency stop device also includes a connecting rod (10) and a bent rod (11). The two ends of the nut connecting block (8) are respectively hinged to a swing rod, and a connecting rod (10) is respectively hinged to the side of the two swing rods near the emergency stop motor (6), and a bent rod (11) is respectively hinged to the side of the two swing rods away from the nut connecting block (8).

5. The overhead travelling crane with laser ranging anti-collision device according to claim 4, characterized in that: Inside the vehicle base (1), a set of rotating shafts (9) are fixedly installed on both sides near the emergency stop motor (6). The ends of the two sets of connecting rods (10) away from the two sets of swing rods are rotatably installed together with the two sets of rotating shafts (9). The ends of the two sets of bent rods (11) away from the nut connecting block (8) extend towards one side of the moving wheel (2). The distance between the two sets of bent rods (11) is greater than the thickness of the moving wheel (2). A set of friction plates is fixedly installed on the side of the two sets of bent rods (11) near the moving wheel (2).

6. The overhead travelling crane with laser ranging anti-collision device according to claim 1, characterized in that: The buffer mechanism (4) includes a base (12), a top cover (13) and contact posts (14). A set of bases (12) is fixedly installed at both ends of the vehicle base (1), and the top of the two sets of bases (12) is slidably sleeved with the top of the hollowed-out top. A set of contact posts (14) is fixedly installed on both sides of the top of the top of the top of the top cover (13).

7. A crane with a laser rangefinder collision avoidance device according to claim 6, characterized in that: The buffer mechanism (4) also includes a fixed rod (15), a sliding ring (16) and a swing rod (17). The fixed rod (15) is fixedly installed inside the base (12). A set of sliding rings (16) are slidably installed at both ends of the fixed rod (15). A set of swing rods (17) are hinged to the top of the two sets of sliding rings (16). The top of the inner part of the cover (13) is provided with a crossbeam, and the two sets of swing rods (17) are respectively hinged to the crossbeam on the side away from the sliding ring (16).

8. The overhead travelling crane with laser ranging anti-collision device according to claim 7, characterized in that: A spring (18) is sleeved in the middle of the fixed rod (15), and the two ends of the spring (18) are fixedly installed together with two sets of sliding rings (16).

9. The overhead travelling crane with laser ranging anti-collision device according to claim 6, characterized in that: Two sets of spring dampers (19) are fixedly installed on the side of the base (12) near the fixed rod (15), and the tops of the two sets of spring dampers (19) are fixedly installed together with the crossbeam through the connecting rod.

Images