Collision-proof bridge crane

Abstract

The utility model discloses a kind of anti-collision bridge frame cranes, it is related to bridge frame crane anti-collision technical field, to solve the current bridge frame crane's anti-collision structure is interfered by external environment, easy to lose the technical problem of anti-collision protection effect, including track and bridge frame crane main body.The utility model is designed to protect structure, when two groups of bridge frame crane main body are close on track, the bridge frame crane main body of one group will contact with the protection structure on the bridge frame crane main body of another group in time, the second rectangular sleeve on protection structure will be pressed in time, then the second rectangular sleeve will move to the first rectangular sleeve, the door structure will drive sealing door to rotate ninety degrees in time, in open state, then laser range finder will detect the distance between bridge frame crane main body.

Description

Technical Field

[0001] This utility model relates to the field of anti-collision technology for bridge cranes, and more specifically, to an anti-collision bridge crane. Background Technology

[0002] Bridge cranes are lifting equipment that spans across workshops, warehouses, and material yards for material handling. Because their two ends rest on tall concrete pillars or metal support rails, resembling a bridge, the bridge of the bridge crane runs longitudinally along the rails laid on the elevated structures on both sides. This allows for full utilization of the space beneath the bridge for material handling, without being obstructed by ground equipment. It is the most widely used and numerous type of lifting machinery. When multiple bridge cranes operate in parallel on the same rail, they are usually equipped with anti-collision structures (laser rangefinders, ultrasonic sensors, or infrared detectors) to monitor the distance between adjacent cranes in real time, thereby preventing collisions that may occur due to operational errors or insufficient monitoring.

[0003] Existing bridge cranes use laser rangefinders, ultrasonic sensors, or infrared detectors for collision prevention. However, if the bridge crane is used in industrial environments with dust, smoke, moisture, or strong light, the following problems may occur: 1. Laser rangefinders are susceptible to the effects of dust (such as metal shavings, coal dust), smoke (welding fumes, oil mist), and strong light (direct sunlight, workshop lighting) in industrial environments. Dust or smoke can scatter the laser beam, causing signal attenuation and potentially leading to a misjudgment of "too far away"; strong light may overwhelm the laser signal, resulting in inaccurate ranging or complete failure. 2. Ultrasonic sensors rely on air as a medium for propagation and are significantly affected by temperature and airflow (such as workshop ventilation and equipment exhaust). Temperature changes will alter the speed of sound wave propagation, leading to ranging errors. Strong airflow may interfere with the sound wave path, especially when the crane is moving at high speed, and the error may exceed the safety threshold. 3. Infrared detectors are susceptible to interference from ambient heat sources (such as welding arc light, heating equipment) or direct sunlight, which may cause them to mistakenly identify non-crane heat sources as "adjacent cranes", leading to malfunctions. At the same time, infrared light has weak penetrating power, and dust and water vapor will weaken the signal, resulting in a shortened detection distance or failure.

[0004] In summary, existing bridge cranes, regardless of whether they use laser rangefinders, ultrasonic sensors, or infrared detectors to achieve distance detection for collision protection, are easily affected by external environmental interference, leading to detection errors and thus compromising the collision protection effect. Therefore, we propose a collision-resistant bridge crane. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide an anti-collision bridge crane to solve the technical problem that the anti-collision structure of the current bridge crane is easily affected by external environmental interference and loses its anti-collision protection effect.

[0006] To solve the above technical problems, this utility model provides the following technical solution: a collision-resistant bridge crane, including a rail and a bridge crane body, the bridge crane body is arranged on the rail, a protective structure and a laser rangefinder are arranged on the crossbeam of the bridge crane body, the laser rangefinder is located inside the protective structure, the protective structure includes a first rectangular sleeve and a second rectangular sleeve, the second rectangular sleeve is inserted into the first rectangular sleeve, the four sides of the first rectangular sleeve and the second rectangular sleeve are arranged with elastic structures, the port of the second rectangular sleeve is rotatably arranged with two sets of symmetrical sealing doors, and the top and bottom sides of the second rectangular sleeve are arranged with opening structures; The door opening structure includes a drive bar, a main gear, and a secondary gear. The drive bar is arranged on a first rectangular sleeve, the main gear is arranged on the rotating shaft end of the sealed door, and the secondary gear is rotatably arranged on a second rectangular sleeve. The secondary gear is divided into a lower gear part and an upper cylindrical part, and transmission teeth are arranged on a quarter circumference of the upper cylindrical part.

[0007] Preferably, the second rectangular sleeve has a sealing ring at the end facing the first rectangular sleeve, and a proximity switch is arranged on the inner wall of the second rectangular sleeve.

[0008] Preferably, the elastic structure includes a first mounting block, a second mounting block, and a spring, wherein the first mounting block is arranged on the second rectangular sleeve, the second mounting block is arranged on the first rectangular sleeve, and the spring is arranged between the first mounting block and the second mounting block.

[0009] Preferably, a T-shaped rod is arranged through the second mounting block, and one end of the T-shaped rod is connected to the first mounting block.

[0010] Preferably, the drive bar is divided into a rectangular part and an L-shaped part. The rectangular part is arranged on the first rectangular sleeve, and a drive tooth is arranged on one side of the interior of the L-shaped part. The drive tooth meshes with the transmission tooth, and the lower gear part meshes with the main gear.

[0011] Preferably, a T-shaped groove is provided at the top of the L-shaped part, and a T-shaped block is slidably arranged inside the T-shaped groove, and the T-shaped block is arranged on the second rectangular sleeve.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, through its designed protective structure, ensures that when two sets of bridge crane bodies approach each other on the track, one set of bridge crane bodies will contact the protective structure on the other set in advance. This will press against the second rectangular sleeve on the protective structure, causing it to move inwards towards the first rectangular sleeve. Simultaneously, the door opening structure will rotate the sealing door 90 degrees, opening it. A laser rangefinder will then detect the distance between the two sets of bridge crane bodies. Once the distance reaches a safe distance (divided into deceleration distance and stopping distance), an electrical signal is transmitted to the external controller, which then automatically controls the system. The bridge crane body decelerates to a stop, thus preventing collisions. During this process, the protective structure seals the detection environment of the laser rangefinder, effectively preventing external environmental influences and ensuring the accuracy of the laser rangefinder's detection of the distance between the two bridge crane bodies. This effectively guarantees the stability of the anti-collision protection for the bridge crane body, solving the technical problem that the anti-collision structure of the bridge crane is easily affected by external environmental interference and loses its anti-collision protection effect. Therefore, this utility model has the advantage of providing more stable anti-collision protection for the bridge crane body.

[0013] 2. The door opening structure of this utility model consists of a drive bar, a main gear, and a secondary gear. The secondary gear is divided into a lower gear section and an upper cylindrical section. The lower gear section meshes with the main gear. Transmission teeth are arranged on a quarter circumference of the upper cylindrical section. The transmission teeth mesh with the drive teeth of the drive bar. Therefore, during the movement of the second rectangular sleeve into the first rectangular sleeve, the drive teeth of the drive bar, in conjunction with the transmission teeth, will only cause the upper cylindrical section to rotate 90 degrees, without affecting the continuous movement of the second rectangular sleeve. At this time, the lower gear section, in conjunction with the main gear, will cause the sealing door to rotate 90 degrees to open. Conversely, when the second rectangular sleeve is reset under the cooperation of the elastic structure, the drive bar will only cause the main gear and the secondary gear to rotate 90 degrees to reset. The main gear will cause the sealing door to reset and rotate 90 degrees to seal. This method can ensure that the second rectangular sleeve, in conjunction with the elastic structure, can perform a large degree of buffer displacement on the first rectangular sleeve. This allows the laser rangefinder to achieve a longer deceleration and stopping effect on the main body of the bridge crane, thus improving the anti-collision effect of the bridge crane main body. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the protective structure and the installation structure of the laser rangefinder of this utility model; Figure 3 This is a schematic diagram of the protective structure of this utility model; Figure 4 This is a schematic diagram of the door opening structure of this utility model; Figure 5 This is a schematic diagram of the secondary gear structure of this utility model; Figure 6 This is a schematic diagram of the drive bar structure of this utility model; Figure 7 This is a schematic diagram of the second rectangular sleeve structure of this utility model.

[0015] Explanation of the labels in the diagram: 1. Track; 2. Bridge crane body; 3. Protective structure; 4. Laser rangefinder; 5. First rectangular sleeve; 6. Second rectangular sleeve; 601. Sealing ring; 602. Proximity switch; 7. Sealing door; 8. Door opening structure; 801. Drive bar; 802. Main gear; 803. Secondary gear; 804. Lower gear section; 805. Upper cylindrical section; 806. Transmission gear; 807. Rectangular section; 808. L-shaped section; 809. Drive gear; 8010. T-slot; 8011. T-block; 9. Elastic structure; 901. First mounting block; 902. Second mounting block; 903. Spring; 904. T-bar. Detailed Implementation

[0016] like Figures 1 to 7 As shown, this utility model relates to an anti-collision bridge crane, including a rail 1 and a bridge crane body 2. The bridge crane body 2 is arranged on the rail 1. A protective structure 3 and a laser rangefinder 4 are arranged on the crossbeam of the bridge crane body 2. The laser rangefinder 4 is located inside the protective structure 3. The protective structure 3 includes a first rectangular sleeve 5 and a second rectangular sleeve 6. The second rectangular sleeve 6 is inserted into the first rectangular sleeve 5. Elastic structures 9 are arranged on the four sides of the first rectangular sleeve 5 and the second rectangular sleeve 6. Two sets of symmetrical sealing doors 7 are rotatably arranged at the port of the second rectangular sleeve 6. Opening structures 8 are arranged on the top and bottom sides of the second rectangular sleeve 6. A sealing ring 601 is arranged on the end of the second rectangular sleeve 6 facing the first rectangular sleeve 5. A proximity switch 602 is arranged on the inner wall of the second rectangular sleeve 6. When two sets of bridge crane bodies 2 approach each other on track 1, one set of bridge crane bodies 2 will contact the protective structure 3 on the other set of bridge crane bodies 2 in advance. At this time, it will press against the second rectangular sleeve 6 on the protective structure 3, and then the second rectangular sleeve 6 will move into the first rectangular sleeve 5. At this time, the door opening structure 8 will drive the sealing door 7 to rotate 90 degrees and open. At this time, the sealing door 7 will contact the proximity switch 602, and then the proximity switch 602 will control the laser rangefinder 4 to work. The laser rangefinder 4 will then detect the distance between the two sets of bridge crane bodies 2. When it detects the distance between the two sets of bridge crane bodies 2, it will detect the distance between the two sets of bridge crane bodies 2. Once the distance between the two bodies 2 reaches a safe distance (divided into deceleration distance and stopping distance), an electrical signal is transmitted to the external controller. The external controller then automatically controls the bridge crane body 2 to decelerate to a stop, thereby preventing collisions between the bridge crane body 2 and the other body. During this process, the protective structure 3 seals and protects the detection environment of the laser rangefinder 4, effectively preventing external environmental influences on the laser rangefinder 4's detection and ensuring the accuracy of the laser rangefinder 4's detection of the distance between the two bridge crane bodies 2. This effectively ensures the stability of the anti-collision protection for the bridge crane body 2.

[0017] Specifically, the elastic structure 9 includes a first mounting block 901, a second mounting block 902, and a spring 903. The first mounting block 901 is arranged on the second rectangular sleeve 6, the second mounting block 902 is arranged on the first rectangular sleeve 5, and the spring 903 is arranged between the first mounting block 901 and the second mounting block 902. A T-shaped rod 904 is arranged through the second mounting block 902, and one end of the T-shaped rod 904 is connected to the first mounting block 901. The T-shaped rod 904 can play a limiting role, ensuring that the second rectangular sleeve 6 moves stably into the first rectangular sleeve 5. Then, when the spring 903 loses external pressure, it will drive the second rectangular sleeve 6 to reset. After resetting, the two sets of sealing doors 7, in cooperation with the opening structure 8, reset again to seal the port of the second rectangular sleeve 6. Moreover, after the sealing door 7 leaves the proximity switch 602, the laser rangefinder 4 is automatically controlled to stop working.

[0018] In an embodiment of this utility model, the door opening structure 8 includes a drive bar 801, a main gear 802, and a secondary gear 803. The drive bar 801 is arranged on the first rectangular sleeve 5, the main gear 802 is arranged on the rotating shaft end of the sealing door 7, and the secondary gear 803 is rotatably arranged on the second rectangular sleeve 6. The secondary gear 803 is divided into a lower gear part 804 and an upper cylindrical part 805. A transmission tooth 806 is arranged on a quarter circumference of the upper cylindrical part 805. The drive bar 801 is divided into a rectangular part 807 and an L-shaped part 808. The rectangular part 807 is arranged on the first rectangular sleeve 5, and a drive tooth 809 is arranged on one side inside the L-shaped part 808. The drive tooth 809 meshes with the transmission tooth 806, and the lower gear part 804 meshes with the main gear 802. During the movement of the second rectangular sleeve 6 into the first rectangular sleeve 5, the drive teeth 809 of the drive bar 801, in conjunction with the transmission teeth 806, will only cause the upper cylindrical part 805 to rotate 90 degrees, without affecting the continuous movement of the second rectangular sleeve 6. At this time, the lower gear part 804, in conjunction with the main gear 802, will cause the sealing door 7 to rotate 90 degrees to open. Conversely, when the second rectangular sleeve 6 is reset with the cooperation of the elastic structure 9, the drive bar 801 will only cause the main gear 802 and the secondary gear 803 to rotate 90 degrees to reset. The main gear 802 will cause the sealing door 7 to reset and rotate 90 degrees to seal. This method can ensure that the second rectangular sleeve 6, in conjunction with the elastic structure 9, performs a large degree of buffer displacement on the first rectangular sleeve 5, thereby enabling the laser rangefinder 4 to achieve a longer deceleration and stop effect on the bridge crane body 2, thus providing a better anti-collision effect for the bridge crane body 2.

[0019] Specifically, a T-shaped groove 8010 is provided at the top of the L-shaped part 808, and a T-shaped block 8011 is slidably arranged inside the T-shaped groove 8010. The T-shaped block 8011 is arranged on the second rectangular sleeve 6. The T-shaped groove 8010 and the T-shaped block 8011 can stabilize the drive bar 801 and ensure the stability of the movement of the drive bar 801, that is, ensure the stability of the drive bar 801 driving the secondary gear 803.

[0020] Working Principle: This embodiment provides a collision-resistant bridge crane. First, when two sets of bridge crane bodies 2 approach each other on track 1, one set of bridge crane bodies 2 will contact the protective structure 3 on the other set of bridge crane bodies 2 in advance. At this time, it will press against the second rectangular sleeve 6 on the protective structure 3. Then, the second rectangular sleeve 6 will move into the first rectangular sleeve 5. At this time, the door opening structure 8 will drive the sealing door 7 to rotate 90 degrees and open. At this time, the sealing door 7 will contact the proximity switch 602. Then, the proximity switch 602 will control the laser rangefinder 4 to work. The laser rangefinder 4 will then detect the distance between the bridge crane bodies 2. When the distance between the two sets of bridge crane bodies 2 is detected to reach a safe distance (divided into deceleration distance and stopping distance), an electrical signal is transmitted to the external controller. Then, the external controller automatically controls the bridge crane body 2 to decelerate to a stop, thereby avoiding collision between the bridge crane bodies 2 and the crane bodies 2. During this process, the protective structure 3 seals and protects the detection environment of the laser rangefinder 4, effectively preventing the external environment from affecting the detection of the laser rangefinder 4 and ensuring the accuracy of the laser rangefinder 4 in detecting the distance between the two sets of bridge crane bodies 2. This effectively ensures the stability of the anti-collision protection for the bridge crane body 2. Secondly, during the movement of the second rectangular sleeve 6 into the first rectangular sleeve 5, the drive teeth 809 of the drive bar 801, in conjunction with the transmission teeth 806, will only cause the upper cylindrical part 805 to rotate 90 degrees, without affecting the continuous movement of the second rectangular sleeve 6. At this time, the lower gear part 804, in conjunction with the main gear 802, will cause the sealing door 7 to rotate 90 degrees to open. Conversely, when the second rectangular sleeve 6 is reset with the cooperation of the elastic structure 9, the drive bar 801 will only cause the main gear 802 and the secondary gear 803 to rotate 90 degrees to reset. The main gear 802 will cause the sealing door 7 to reset and rotate 90 degrees to seal. This method can ensure that the second rectangular sleeve 6, in conjunction with the elastic structure 9, performs a large degree of buffer displacement on the first rectangular sleeve 5, thereby enabling the laser rangefinder 4 to achieve a longer deceleration and stop effect on the main body 2 of the bridge crane, thus providing a better anti-collision effect for the main body 2 of the bridge crane.

[0021] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A collision-avoiding bridge crane, characterized in that, The system includes a track (1) and a bridge crane body (2). The bridge crane body (2) is arranged on the track (1). A protective structure (3) and a laser rangefinder (4) are arranged on the crossbeam of the bridge crane body (2). The laser rangefinder (4) is located inside the protective structure (3). The protective structure (3) includes a first rectangular sleeve (5) and a second rectangular sleeve (6). The second rectangular sleeve (6) is inserted into the first rectangular sleeve (5). The first rectangular sleeve (5) and the second rectangular sleeve (6) have elastic structures (9) arranged on their four sides. The second rectangular sleeve (6) has two sets of symmetrical sealing doors (7) arranged at its port. The second rectangular sleeve (6) has opening structures (8) arranged on its top and bottom sides. The door opening structure (8) includes a drive bar (801), a main gear (802) and a secondary gear (803). The drive bar (801) is arranged on the first rectangular sleeve (5). The main gear (802) is arranged on the rotating shaft end of the sealing door (7). The secondary gear (803) is rotatably arranged on the second rectangular sleeve (6). The secondary gear (803) is divided into a lower gear part (804) and an upper cylindrical part (805). Transmission teeth (806) are arranged on a quarter circumference of the upper cylindrical part (805).

2. A collision-avoiding bridge crane according to claim 1, characterized in that The second rectangular sleeve (6) is provided with a sealing ring (601) facing the end of the first rectangular sleeve (5), and a proximity switch (602) is provided on the inner wall of the second rectangular sleeve (6).

3. A collision-avoiding bridge crane according to claim 1, characterized in that The elastic structure (9) includes a first mounting block (901), a second mounting block (902), and a spring (903). The first mounting block (901) is arranged on the second rectangular sleeve (6), the second mounting block (902) is arranged on the first rectangular sleeve (5), and the spring (903) is arranged between the first mounting block (901) and the second mounting block (902).

4. A collision-avoiding bridge crane according to claim 3, characterized in that A T-shaped rod (904) is arranged through the second mounting block (902), and one end of the T-shaped rod (904) is connected to the first mounting block (901).

5. A collision-avoiding bridge crane according to claim 1, characterized in that The drive bar (801) is divided into a rectangular part (807) and an L-shaped part (808). The rectangular part (807) is arranged on the first rectangular sleeve (5). The L-shaped part (808) has a drive tooth (809) arranged on one side inside. The drive tooth (809) meshes with the transmission tooth (806). The lower gear part (804) meshes with the main gear (802).

6. A collision-resistant bridge crane according to claim 5, characterized in that, The L-shaped part (808) has a T-shaped groove (8010) at the top, and a T-shaped block (8011) is slidably arranged inside the T-shaped groove (8010). The T-shaped block (8011) is arranged on the second rectangular sleeve (6).

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