Buffering and anti-collision device for crown block

Abstract

The utility model relates to the technical field of crown block anti-collision, and discloses a crown block buffering anti-collision device which comprises a sliding rail installed between two end beams and a crown block body installed on the sliding rail, the two sides of the two end beams are fixedly connected with supporting beams, a rotating assembly is connected between every two adjacent supporting beams, the rotating assemblies are close to the end beams, and the end beams are fixedly connected with the sliding rail. The side, away from the end beam, of the rotating assembly is connected with a suspender, the end, away from the rotating assembly, of the suspender is fixedly connected with a pendulum bob, and the side, close to the crown block body, of the pendulum bob is connected with a buffering assembly. According to the buffering anti-collision device for the crown block, by arranging the pendulum bob, when the crown block suddenly stops due to collision, a hoisted heavy object swings towards the pendulum bob and is in contact with the buffering assembly of the pendulum bob, so that the collision strength between the hoisted heavy object and the pendulum bob is relieved, the swinging force of the hoisted heavy object is transmitted to the pendulum bob, and collision between the hoisted heavy object and the supporting beam is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of overhead crane anti-collision, in particular to an overhead crane buffer anti-collision device. Background Art

[0002] The modern overhead crane, also known as a traveling crane or a hoist, is a mechanical device used to carry heavy objects in places such as factories and warehouses. Such overhead cranes are usually installed on the top of buildings and can move along tracks, lifting and transporting goods through hooks or other devices; there are various types of overhead cranes, including single-girder overhead cranes, double-girder overhead cranes, etc., which are widely used in manufacturing, logistics and other fields. Overhead cranes (traveling cranes or hoists) play an important role in industrial production. In order to ensure their safe operation, prevent collision accidents caused by improper operation or mechanical failures, and effectively reduce or avoid equipment damage and personnel injuries caused by collisions, it is very necessary to install a buffer anti-collision device on the overhead crane.

[0003] For example, the patent with the publication number CN218371364U discloses an overhead crane anti-collision buffer device, including end beams, slide rails and the overhead crane body. The two ends of the slide rails are fixedly connected to the end beams, and the slide rails are slidably connected to the overhead crane body. It further includes: protection mechanisms are arranged on both sides of the overhead crane body to protect both sides of the overhead crane body during a collision. A primary buffer mechanism is arranged inside the end beam, and the primary buffer mechanism is connected to a secondary buffer mechanism; when the overhead crane body collides with the end beam due to a fault, the primary buffer mechanism provides buffering. While the primary buffer mechanism is acting, it will drive the secondary buffer mechanism to operate, causing the airbag of the secondary buffer mechanism to expand and unfold, and providing a buffering effect through the inflated airbag, thereby improving the anti-collision and buffering effect of the device. The structure is ingenious and the practicability is good.

[0004] However, the overhead crane anti-collision buffer device in the above technology still has the following problems:

[0005] Although the protection mechanisms on both sides of the overhead crane cooperate with the primary buffer mechanism and the secondary buffer mechanism of the cross beam to improve the anti-collision and buffering effect of the overhead crane, when the overhead crane stops moving through the anti-collision buffer device, the heavy object lifted below the overhead crane will still continue to move to one side under the action of inertia, and then swing, and collide with the suspension bracket, which is likely to cause damage to the lifted object. Content of the Utility Model

[0006] Aiming at the deficiencies of the prior art, the utility model provides an overhead crane buffer anti-collision device, for example: it can protect the lifted object, thereby reducing the collision damage of the lifted object after the overhead crane collides.

[0007] To achieve the above object, the present utility model provides the following technical solution: An overhead crane buffer and anti-collision device, comprising a slide rail installed between two end beams and an overhead crane body installed on the slide rail. Support beams are fixedly connected to both sides of the two end beams. A rotating assembly is connected between adjacent support beams. The rotating assembly is close to the end beam. One side of the rotating assembly away from the end beam is connected with a suspension rod. One end of the suspension rod away from the rotating assembly is fixedly connected with a pendulum bob. A buffer assembly is connected to one side of the pendulum bob close to the overhead crane body.

[0008] Further, two protective rods are fixedly connected between adjacent support beams. The two protective rods respectively abut against the upper and lower ends of the side of the pendulum bob close to the overhead crane body.

[0009] Further, the rotating assembly includes a flipping rod and two rotating shafts. A rotating hole is penetrated through the side wall of one end of the support beam close to the end beam. The two rotating shafts are respectively rotationally connected to adjacent rotating holes.

[0010] Further, the buffer assembly includes a buffer block and a plurality of buffer springs. A buffer cavity is opened on one side of the pendulum bob close to the overhead crane body. The buffer block is slidably connected to the buffer cavity. One side of the buffer block located in the buffer cavity is fixedly connected with a plurality of buffer springs. The other ends of the plurality of buffer springs are all fixedly connected to the buffer cavity. The buffer block is located between the two protective rods.

[0011] Further, a limiting rod is provided inside the buffer spring. One end of the limiting rod is fixedly connected to the buffer block, and the other end passes through the buffer spring and penetrates the buffer cavity. The limiting rod is slidably connected to the pendulum bob.

[0012] Further, limiting strips are fixedly connected to both sides of one end of the buffer block close to the buffer spring. Limiting grooves are opened on both sides of the buffer cavity. The two limiting strips are respectively slidably connected to the two limiting grooves.

[0013] Further, a rubber pad is fixedly connected to the side of the buffer block away from the pendulum bob.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] For this kind of overhead crane buffer and anti-collision device, by setting the pendulum bob, when the overhead crane collides and stops suddenly, the hoisted heavy object swings towards the pendulum bob and contacts the buffer assembly of the pendulum bob, thereby reducing the collision force between them and transmitting the swinging force of the hoisted object to the pendulum bob, so as to avoid the collision between the hoisted object and the support beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall external connection structure of the present utility model;

[0017] Figure 2Schematic diagram of another connection structure between the support beam and the pendulum of the present utility model;

[0018] Figure 3 Exploded schematic diagram of the connection structure between the support beam and the rotating assembly of the present utility model;

[0019] Figure 4 Cross-sectional schematic diagram of the connection structure of the pendulum part of the present utility model;

[0020] Figure 5 Based on Figure 4 Cross-sectional schematic diagram of the swinging part;

[0021] Figure 6 Based on Figure 5 Schematic diagram of the connection structure from another angle.

[0022] In the figure: 1, end beam; 2, slide rail; 3, overhead crane body; 4, support beam; 5, suspension rod; 6, pendulum; 7, protective rod; 8, turning rod; 9, rotating shaft; 10, buffer block; 11, buffer spring; 12, limit rod; 13, limit strip; 14, rubber pad; 401, rotating hole; 601, buffer cavity; 602, limit groove. Specific implementation manner

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0024] Please refer to Figure 1 - Figure 6 , an overhead crane buffer and anti-collision device, including a slide rail 2 installed between two end beams 1 and an overhead crane body 3 installed on the slide rail 2. Support beams 4 are fixedly connected to both sides of the two end beams 1. A rotating assembly is connected between adjacent support beams 4. The rotating assembly is close to the end beam 1. One side of the rotating assembly away from the end beam 1 is connected to a suspension rod 5. One end of the suspension rod 5 away from the rotating assembly is fixedly connected to a pendulum 6. A buffer assembly is connected to one side of the pendulum 6 close to the overhead crane body 3.

[0025] As Figure 1 - Figure 6 shown, an overhead crane buffer and anti-collision device in the present utility model is similar in structure to the existing overhead crane buffer and anti-collision device. For example, an overhead crane anti-collision buffer device disclosed in the patent with the publication number CN218371364U. The main improvement point of the present utility model is that it can provide anti-collision protection for the suspended object below the overhead crane body 3 when the overhead crane body 3 collides and stops suddenly, as Figures 1 to 6As shown in the figure, when the overhead crane buffer and anti-collision device in the present utility model is in use, when the overhead crane body 3 on the slide rail 2 collides and suddenly stops, the heavy object hoisted below the overhead crane body 3 will swing to one side. The swinging heavy object will contact the buffer assembly inside the pendulum 6, and through the action of the buffer assembly, the impact force on the pendulum 6 will be reduced. Subsequently, the inertial force of the heavy object will continue to be transmitted to the pendulum 6. Under the action of the impact force, the pendulum 6 swings outward from between the two support beams 4 through the suspension rod 5 and the rotating assembly, gradually reducing the force on the pendulum 6, protecting the hoisted heavy object, and reducing the possible damage caused by the hoisted object after the overhead crane body 3 collides.

[0026] As Figure 1 and Figure 2 shown, two protective rods 7 are fixedly connected between two adjacent support beams 4, and the two protective rods 7 respectively abut against the upper and lower ends of the side of the pendulum 6 close to the overhead crane body 3. When the pendulum 6 moves outward and falls under the action of gravity, the pendulum 6 can be blocked by the two protective rods 7, so as to prevent the pendulum 6 from swinging to the inside and causing collision damage to the hoisted heavy object.

[0027] As Figure 1 - Figure 3 shown, the rotating assembly includes a turning rod 8 and two rotating shafts 9. A rotating hole 401 is penetrated through the side wall of the support beam 4 close to one end of the end beam 1, and the two rotating shafts 9 are respectively rotatably connected to the adjacent two rotating holes 401. When the pendulum 6 is forced to move outward, it drives the suspension rod 5 and the turning rod 8, and through the connection between the rotating shaft 9 and the rotating hole 401, a swinging effect is achieved between the two support beams 4.

[0028] As Figure 1 - Figure 6 shown, the buffer assembly includes a buffer block 10 and a plurality of buffer springs 11. A buffer cavity 601 is formed on the side of the pendulum 6 close to the overhead crane body 3. The buffer block 10 is slidably connected to the buffer cavity 601. One side of the buffer block 10 located in the buffer cavity 601 is fixedly connected to the plurality of buffer springs 11, and the other ends of the plurality of buffer springs 11 are all fixedly connected to the buffer cavity 601. The buffer block 10 is located between the two adjacent protective rods 7. When the hoisted object collides with the buffer block 10, by compressing a plurality of buffer springs 11, a certain buffer effect is achieved, avoiding a rigid collision between the hoisted object and the pendulum 6, and reducing the collision damage of the hoisted object.

[0029] As Figure 1 - Figure 6 shown, a limiting rod 12 is arranged inside the buffer spring 11. One end of the limiting rod 12 is fixedly connected to the buffer block 10, and the other end passes through the buffer spring 11 and penetrates the buffer cavity 601. The limiting rod 12 is slidably connected to the pendulum 6. By arranging the limiting rod 12, when the buffer spring 11 is compressed, the buffer spring 11 can be supported, preventing the buffer spring 11 from being distorted and deformed, and improving the stability of the buffer spring 11.

[0030] As Figure 1 - Figure 6 shown, on both sides of one end of the buffer block 10 close to the buffer spring 11, limiting strips 13 are fixedly connected. On both sides of the buffer cavity 601, limiting grooves 602 are provided, and the two limiting strips 13 are respectively slidably connected with the two limiting grooves 602. By sliding the two limiting strips 13 in the two limiting grooves 602, it is possible to prevent the buffer block 10 from falling off the buffer cavity 601 when the buffer block 10 expands and contracts in the buffer cavity 601.

[0031] As Figure 1 - Figure 6 shown, a rubber pad 14 is fixedly connected to the side of the buffer block 10 away from the pendulum 6. When the suspended object collides with the buffer block 10, by contacting and colliding with the suspended object through the rubber pad 14, the anti-collision protection of the suspended object can be further enhanced.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An overhead crane buffer and anti-collision device, comprising a slide rail (2) installed between two end beams (1) and an overhead crane body (3) installed on the slide rail (2), characterized in that: On both sides of the two end beams (1), support beams (4) are fixedly connected. A rotating assembly is connected between two adjacent support beams (4). The rotating assembly is close to the end beam (1). On one side of the rotating assembly away from the end beam (1), a suspension rod (5) is connected. At the end of the suspension rod (5) away from the rotating assembly, a pendulum weight (6) is fixedly connected. On one side of the pendulum weight (6) close to the overhead crane body (3), a buffer assembly is connected.

2. The overhead crane buffer and anti-collision device according to claim 1, characterized in that: Between two adjacent support beams (4), two protective rods (7) are fixedly connected. The two protective rods (7) respectively abut against the upper and lower ends of the side of the pendulum weight (6) close to the overhead crane body (3).

3. The overhead crane buffer anti-collision device according to claim 1 or 2, characterized in that: The rotating assembly includes a turning rod (8) and two rotating shafts (9). A rotating hole (401) is penetrated and opened on the side wall of one end of the support beam (4) close to the end beam (1). The two rotating shafts (9) are respectively rotationally connected to two adjacent rotating holes (401).

4. The overhead crane buffer anti-collision device according to claim 2, characterized in that: The buffer assembly includes a buffer block (10) and a plurality of buffer springs (11). A buffer cavity (601) is opened on one side of the pendulum weight (6) close to the overhead crane body (3). The buffer block (10) is slidably connected to the buffer cavity (601). On one side of the buffer block (10) located in the buffer cavity (601), it is fixedly connected to a plurality of buffer springs (11). The other ends of the plurality of buffer springs (11) are all fixedly connected to the buffer cavity (601). The buffer block (10) is located between two adjacent protective rods (7).

5. The overhead crane buffer anti-collision device according to claim 4, characterized in that: A limiting rod (12) is arranged in the buffer spring (11). One end of the limiting rod (12) is fixedly connected to the buffer block (10), and the other end passes through the buffer spring (11) and penetrates the buffer cavity (601). The limiting rod (12) is slidably connected to the pendulum weight (6).

6. The overhead crane buffer anti-collision device according to claim 4, characterized in that: On both sides of one end of the buffer block (10) close to the buffer spring (11), limiting strips (13) are fixedly connected. Limiting grooves (602) are opened on both sides of the buffer cavity (601). The two limiting strips (13) are respectively slidably connected to the two limiting grooves (602).

7. An overhead crane buffer and anti-collision device according to claim 4, 5 or 6, characterized in that: On the side of the buffer block (10) away from the pendulum weight (6), a rubber pad (14) is fixedly connected.

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