Safety anti-collision protection device for gantry crane

Abstract

The safety anti-collision protection device of the portal crane effectively solves the problem of poor anti-collision protection effect, and comprises a main beam, two lifting trolleys and a lifting tool, the lifting trolleys are provided with buffer mechanisms at left and right ends, the buffer mechanism comprises two first guide rails, the first guide rails are fixedly connected with the lifting trolley, the other end of the first guide rail is fixedly provided with a supporting disc, the outer side of the supporting disc is provided with a baffle, the first guide rail is slidably connected with a first sliding block, the two first sliding blocks are fixedly provided with a second guide rail, the second guide rail is slidably connected with a second sliding block and a third sliding block, the second sliding block is hingedly connected with a first connecting rod, the other end of the first connecting rod is hingedly connected with the baffle, the third sliding block is hingedly connected with a second connecting rod, the other end of the second connecting rod is hingedly connected with the baffle, the first connecting rod and the second connecting rod are mutually crossed, a first spring is arranged between the supporting disc and the baffle, a second spring and a third spring are sleeved on the second guide rail, a fourth spring is sleeved on the first guide rail, and the fourth spring is located between the lifting trolley and the first sliding block.

Description

Technical Field

[0001] This utility model belongs to the field of crane technology, and in particular relates to a safety anti-collision protection device for gantry cranes. Background Technology

[0002] A crane is a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range; it is also called an overhead crane, gantry crane, or hoist. Most current cranes use fixed devices to secure the heavy object, and then use a mechanical arm to lift or rotate it, thus moving the object. Existing gantry cranes typically use springs for shock absorption to prevent the trolleys from colliding with each other or impacting the support beams at both ends. However, single-spring protection is ineffective in reducing the impact force during collisions and cannot prevent collisions in a timely and effective manner, leading to damage to the trolleys from repeated impacts. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the existing technology, the purpose of this utility model is to provide a safety anti-collision protection device for gantry cranes, which effectively solves the problem of poor anti-collision protection effect.

[0004] The technical solution to the technical problem is as follows: It includes a main beam with two lifting trolleys running on it. A lifting device is installed below each lifting trolley. Buffer mechanisms are installed at both ends of the lifting trolleys. Each buffer mechanism includes two horizontally arranged first guide rails, which are fixedly connected to the lifting trolleys. A support plate is fixed to the other end of each first guide rail, and a baffle is provided on the outer side of the support plate. First sliders are slidably connected to the first guide rails from left to right. A second guide rail is fixed between the two first sliders. The second guide rail is arranged in a front-back direction. A second slider and a third slider are slidably connected to the second guide rail. A first connecting rod is hinged to the second slider, and the other end of the first connecting rod is hinged to the baffle. The third slider is hinged to a second connecting rod, and the other end of the second connecting rod is hinged to the baffle. The first and second connecting rods intersect each other, with the first connecting rod located above the second connecting rod. A first spring is installed between the support plate and the baffle. A second spring and a third spring are fitted on the second guide rail. The second spring is located between the first and second sliders, and the third spring is located between the first and third sliders. A fourth spring is fitted on the first guide rail, and the fourth spring is located between the lifting trolley and the first slider.

[0005] Preferably, a rubber pad is installed on the outer side of the baffle.

[0006] Preferably, an electrical room is installed on the front side of the main beam.

[0007] This invention has the following advantages over traditional equipment: by combining the structure of the first spring, the second spring, the third spring and the fourth spring, it achieves a multi-layered buffering effect of the baffle, reduces the impact force, provides a safe anti-collision protection effect for gantry cranes, has good stability, and is economical and practical. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the front view of this utility model; Figure 2 This is a schematic diagram of the top view of this utility model; Figure 3 This is a schematic diagram of the front view of the buffer mechanism in this utility model; Figure 4 This is a schematic diagram of the three-dimensional structure of the buffer mechanism in this utility model.

[0009] Reference numerals in the attached drawings: 1. Main beam; 2. Lifting trolley; 3. Lifting device; 4. Buffer mechanism; 5. First guide rail; 6. Support plate; 7. Baffle; 8. First slider; 9. Second guide rail; 10. Second slider; 11. Third slider; 12. First connecting rod; 13. Second connecting rod; 14. First spring; 15. Second spring; 16. Third spring; 17. Fourth spring; 18. Rubber pad; 19. Electrical compartment. Detailed Implementation

[0010] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0011] Depend on Figures 1 to 4 Provided is a safety anti-collision protection device for a gantry crane, including a main beam 1, on which two lifting trolleys 2 run. A lifting device 3 is installed below each lifting trolley 2. Buffer mechanisms 4 are installed at both ends of each lifting trolley 2. Each buffer mechanism 4 includes two horizontally arranged first guide rails 5, which are fixedly connected to the lifting trolleys 2. A support plate 6 is fixed to the other end of each first guide rail 5. A baffle 7 is provided on the outer side of the support plate 6. First sliders 8 are slidably connected to the first guide rails 5 from left to right. A second guide rail 9 is fixed between the two first sliders 8. The second guide rail 9 is arranged in a front-rear direction. A second slider 10 and a third slider 11 are slidably connected to the second guide rail 9. A first connecting rod 12 is hinged, with the other end of the first connecting rod 12 hinged to the baffle 7. A second connecting rod 13 is hinged to the third slider 11, with the other end of the second connecting rod 13 hinged to the baffle 7. The first connecting rod 12 and the second connecting rod 13 intersect each other, with the first connecting rod 12 located above the second connecting rod 13. A first spring 14 is installed between the support plate 6 and the baffle 7. A second spring 15 and a third spring 16 are fitted on the second guide rail 9. The second spring 15 is located between the first slider 8 and the second slider 10, and the third spring 16 is located between the first slider 8 and the third slider 11. A fourth spring 17 is fitted on the first guide rail 5, and the fourth spring 17 is located between the lifting trolley 2 and the first slider 8.

[0012] To mitigate the impact of collisions on the outside of the baffle 7, a rubber pad 18 is installed on the outside of the baffle 7.

[0013] To facilitate the control of the crane trolley 2, an electrical room 19 is installed on the front side of the main beam 1.

[0014] In use, the two lifting trolleys 2 run on the main beam 1. When the lifting trolleys 2 approach the end beam of the main beam 1 or when the two lifting trolleys 2 move closer together, the buffer mechanism 4 begins to be compressed. The rubber pad 18 and the baffle 7 are compressed. The rubber pad 18 provides initial cushioning, and the baffle 7 moves towards the lifting trolley 2, compressing the first spring 14. The first spring 14 is in a compressed state, providing a cushioning effect on the baffle 7. The first connecting rod 12 and the second connecting rod 13 intersect each other, with the first connecting rod 12 located above the second connecting rod 13. The intersecting structure improves the overall stability, but the first connecting rod 12 and the second connecting rod 13 do not interfere with each other. The first connecting rod 12 drives the second slider 10 towards... The first slider 8 on the rear side moves closer together, the second spring 15 is in a compressed state, the second connecting rod 13 drives the third slider 11 to move closer to the first slider 8 on the front side, the third spring 16 is in a compressed state, at the same time, the baffle 7 drives the first connecting rod 12, the second connecting rod 13, the second slider 10, the third slider 11 and the second guide rail 9 to move closer to the crane trolley 2 as a whole, and then the first slider 8 moves closer to the crane trolley 2 along the first guide rail 5, the fourth spring 17 is in a compressed state, so the first spring 14, the second spring 15, the third spring 16 and the third spring 16 are all in a compressed state, which plays a good buffering and protection role for the baffle 7, effectively alleviates the collision of the crane trolley 2, the anti-collision protection effect is obvious, and the safety is high.

[0015] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A safety anti-collision protection device for a gantry crane, comprising a main beam (1), two lifting trolleys (2) running on the main beam (1), a lifting device (3) provided below the lifting trolleys (2), and buffer mechanisms (4) installed at the left and right ends of the lifting trolleys (2), characterized in that, The buffer mechanism (4) includes two horizontally arranged first guide rails (5), which are fixedly connected to the crane trolley (2). A support plate (6) is fixed to the other end of the first guide rail (5). A baffle (7) is provided on the outside of the support plate (6). A first slider (8) is slidably connected to the first guide rail (5) from left to right. A second guide rail (9) is fixed between the two first sliders (8). The second guide rail (9) is arranged in the front-back direction. A second slider (10) and a third slider (11) are slidably connected to the second guide rail (9). A first connecting rod (12) is hinged to the second slider (10). The other end of the first connecting rod (12) is hinged to the baffle (7). A second connecting rod is hinged to the third slider (11). (13) The other end of the second link (13) is hinged to the baffle (7). The first link (12) and the second link (13) intersect each other. The first link (12) is located above the second link (13). The first spring (14) is installed between the support plate (6) and the baffle (7). The second spring (15) and the third spring (16) are sleeved on the second guide rail (9). The second spring (15) is located between the first slider (8) and the second slider (10). The third spring (16) is located between the first slider (8) and the third slider (11). The fourth spring (17) is sleeved on the first guide rail (5). The fourth spring (17) is located between the crane trolley (2) and the first slider (8).

2. The safety anti-collision protection device for a gantry crane according to claim 1, characterized in that, A rubber pad (18) is installed on the outside of the baffle (7).

3. The safety anti-collision protection device for a gantry crane according to claim 1, characterized in that, An electrical room (19) is installed on the front side of the main beam (1).

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