Damper for a crane

Abstract

The utility model discloses a kind of damping shock-absorbing pulley block for crane, including crane and electric hoist installed on the crane, the electric hoist includes lifting hook and pulley block, lifting rope is connected with lifting hook after winding pulley block;The pulley block includes mounting frame and pulley rotationally connected with the mounting frame, the pulley rotationally connects response board, response board is equipped with response push plate, at least two groups of damping shock-absorbing components are installed on the response push plate, lifting rope is threaded through the damping shock-absorbing component after passing pulley, when lifting rope swings, the damping shock-absorbing component carries out buffer shock absorption, sensor component is also installed on the response board, and the sensor component is used to detect the rotation of response board.The utility model can alleviate the swing problem of crane when hoisting, reduce the risk in hoisting process.

Description

Technical Field

[0001] This utility model belongs to the field of crane technology, and specifically relates to a damping and shock-absorbing pulley block for 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 known as an overhead crane, gantry crane, or hoist. Some lifting equipment operates intermittently, meaning that the mechanisms for picking up, moving, and unloading materials work alternately within a work cycle. Cranes are becoming increasingly widespread in the market.

[0003] During the lifting process, the crane needs to move the crane around and stop before moving it again. Due to inertia, the lifting rope will sway from side to side during the movement. If the swaying amplitude is large, it will not only cause trouble for the lifting personnel and affect the operation, but also pose a potential risk to the surrounding buildings and workers. Utility Model Content

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A damping and shock-absorbing pulley block for a crane includes a crane and an electric hoist installed on the crane. The electric hoist includes a hook and a pulley block, and a hoisting rope is wound around the pulley block and connected to the hook. The pulley assembly includes a mounting frame and pulleys rotatably connected to the mounting frame. The pulleys are rotatably connected to a sensing plate, and a sensing push plate is mounted on the sensing plate. At least two sets of damping and shock-absorbing components are mounted on the sensing push plate. The suspension rope passes around the pulley and then through the damping and shock-absorbing components. When the suspension rope swings, the damping and shock-absorbing components provide buffering and shock absorption. A sensor assembly is also mounted on the sensing plate to detect the rotation of the sensing plate.

[0005] Furthermore, the two sets of damping and shock absorption components are respectively disposed on both sides of the pulley.

[0006] Furthermore, the damping and shock absorption assembly includes a tangential slider for sliding connection of the pulley and an elastic element disposed within the tangential slider. One end of the elastic element abuts against the tangential slider, and the other end abuts against a fixed block. The fixed block is connected to the sensing push plate via a connecting column.

[0007] Furthermore, the sensor assembly includes several sets of tablet pressing sensors, which are evenly distributed on the circumference of the pulley. The sensing plate is provided with several sets of trigger blocks that match the tablet pressing sensors. When the sensing plate rotates, the trigger blocks press down on the tablet pressing sensors to trigger signals.

[0008] Furthermore, the induction push plate is provided with an adjustment slot and an induction slot for accommodating the connecting column, the adjustment slot being used for detachable connection between the induction push plate and the induction rotating plate.

[0009] Furthermore, the induction slots are respectively referred to as the fast response section and the equivalent induction section, and the connecting column moves within the fast response section and the equivalent induction section.

[0010] Furthermore, the elastic element is a spring.

[0011] The beneficial effects of this utility model are: When this invention is in use, if the rope sway is small, i.e., not exceeding the equivalent sensing range, the rope drives the sensing plate to rotate along the center of the pulley, thereby compressing the elastic element. The elastic element buffers the sway and reduces the rope sway, thus quickly stabilizing the rope. When the rope sway is large, it enters the rapid response range. At this time, due to the large rotation, the sensor signal is triggered, reminding the operator to intervene and reduce the possibility of risk. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is an overall structural diagram of the pulley block of this utility model; Figure 2 This utility model Figure 1 A magnified view of part A; Figure 3 This utility model Figure 1 A magnified view of part B; Figure 4 This is a schematic diagram of the induction push plate of this utility model; Figure 5 This is a schematic diagram of the electric hoist of this utility model; Figure 6 This is a schematic diagram showing the installation position of the pulley block of this utility model; Figure label: 1. Electric hoist; 2. Hook; 3. Pulley block; 31. End cap; 32. Pulley; 33. Induction rotating plate; 34. Induction push plate; 341. Adjustment slot; 342. Induction slot; 35. Sensor assembly; 351. Pressure plate sensor; 352. Trigger block; 36. Damping and shock absorption assembly; 361. Tangential slider; 362. Elastic element; 363. Fixing block; 364. Connecting column. Detailed Implementation

[0014] The preferred embodiments of the present invention will be described in detail below so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention. Specific Implementation Example 1: A damping and shock-absorbing pulley block for a crane includes a crane and an electric hoist 1 installed on the crane. The electric hoist 1 includes a hook 2 and a pulley block 3. The hoisting rope is wound around the pulley block 3 and then connected to the hook 2. The pulley assembly 3 includes a mounting frame 31 and pulleys 32 rotatably connected to the mounting frame 31. The pulleys 32 are rotatably connected to a sensing plate 33. A sensing push plate 34 is mounted on the sensing plate 33, and at least two sets of damping and shock-absorbing components 36 are mounted on the sensing push plate 34. The suspension rope passes around the pulley 32 and through the damping and shock-absorbing components 36. When the suspension rope swings, the damping and shock-absorbing components 36 provide buffering and shock absorption. A sensor assembly 35 is also mounted on the sensing plate 33 to detect the rotation of the sensing plate 33. Preferably, the sensor assembly 35 includes several sets of pressing sensors 351, which are evenly distributed around the circumference of the pulley 32. The sensing plate 33 is provided with several sets of trigger blocks 352 that match the pressing sensors 351. When the sensing plate 33 rotates, the trigger blocks 352 press down on the pressing sensors 351 to trigger a signal. The induction push plate 34 is provided with an adjustment slot 341 and an induction slot 342 for accommodating the connecting post 364. The adjustment slot 341 is used for the detachable connection between the induction push plate 34 and the induction rotating plate 33. It can be understood that the induction slots 342 are respectively referred to as the fast response section and the equivalent induction section, and the connecting post 364 moves within the fast response section and the equivalent induction section.

[0016] Specifically, in this embodiment, two sets of damping and shock-absorbing components 36 are respectively disposed on both sides of the pulley 32. Preferably, the damping and shock-absorbing component 36 includes a tangential slider 361 for sliding connection with the pulley 32 and an elastic element 362 disposed within the tangential slider 361. One end of the elastic element 362 abuts against the tangential slider 361, and the other end abuts against a fixing block 363. The fixing block 363 is connected to the sensing push plate 34 via a connecting post 364. Preferably, the elastic element 362 is a spring.

[0017] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A damping and shock-absorbing pulley system for a crane, comprising a crane and an electric hoist (1) mounted on the crane, characterized in that: The electric hoist (1) includes a hook (2) and a pulley block (3), and the hoisting rope is wound around the pulley block (3) and then connected to the hook (2); The pulley assembly (3) includes a mounting frame (31) and a pulley (32) rotatably connected to the mounting frame (31). The pulley (32) is rotatably connected to a sensing plate (33). A sensing push plate (34) is mounted on the sensing plate (33). At least two sets of damping shock absorbers (36) are mounted on the sensing push plate (34). The suspension rope passes through the damping shock absorber (36) after passing around the pulley (32). When the suspension rope swings, the damping shock absorber (36) performs buffering and shock absorption. A sensor assembly (35) is also mounted on the sensing plate (33). The sensor assembly (35) is used to detect the rotation of the sensing plate (33).

2. The damping and shock-absorbing pulley block for a crane according to claim 1, characterized in that: The two sets of damping and shock absorption components (36) are respectively disposed on both sides of the pulley (32).

3. A damping and shock-absorbing pulley block for a crane according to claim 2, characterized in that: The damping and shock absorption assembly (36) includes a tangential slider (361) for sliding connection with the pulley (32) and an elastic element (362) disposed in the tangential slider (361). One end of the elastic element (362) abuts against the tangential slider (361) and the other end abuts against the fixing block (363). The fixing block (363) is connected to the sensing push plate (34) through a connecting post (364).

4. A damping and shock-absorbing pulley block for a crane according to claim 1, characterized in that: The sensor assembly (35) includes several sets of tablet sensors (351), which are evenly distributed on the circumference of the pulley (32). The sensing plate (33) is provided with several sets of trigger blocks (352) that match the tablet sensors (351). When the sensing plate (33) rotates, the trigger blocks (352) press down on the tablet sensors (351) to trigger the signal.

5. A damping and shock-absorbing pulley block for a crane according to claim 3, characterized in that: The induction push plate (34) is provided with an adjustment slot (341) and an induction slot (342) for accommodating the connecting column (364). The adjustment slot (341) is used for the detachable connection of the induction push plate (34) and the induction rotating plate (33).

6. A damping and shock-absorbing pulley block for a crane according to claim 5, characterized in that: The induction slots (342) are respectively referred to as the fast response section and the equivalent induction section, and the connecting column (364) moves within the fast response section and the equivalent induction section.

7. A damping and shock-absorbing pulley block for a crane according to claim 3, characterized in that: The elastic element (362) is a spring.

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