A port machinery crane pulley cover assembly with a protection function

Abstract

The utility model discloses a kind of pulley cover assemblies with protection function for port machine crane, it is related to port machinery technical field, including protective cover, rotatingly installed with pivot in the inside of protective cover, the surface fixed mounting of pivot has pulley, the inside of protective cover is provided with down pressure subassembly;The inside of protective cover is provided with anti-falling subassembly, the down pressure subassembly includes one-way threaded rod, the inside of protective cover is screw-mounted in one-way threaded rod, the bottom rotatingly installed of one-way threaded rod has L-shaped plate, the inside of protective cover is slidably installed with sliding block.The utility model design scheme by making two-way threaded rod rotate, can drive two limit plates towards movement and abut on the surface of steel cable, avoid steel cable from jumping and separate pulley, by making one-way threaded rod rotate, can make first axle rod abut on the surface of steel cable, cooperate spring, can reduce the friction force caused by jumping and external component of steel cable, prolong the service life of steel cable.

Description

Technical Field

[0001] This utility model relates to the field of port machinery technology, and in particular to a pulley cover assembly for port cranes with protective functions. Background Technology

[0002] Cranes are a type of lifting and handling machinery widely used in ports, workshops, power construction, and construction sites. Thanks to their unique design, they can perform cyclical and intermittent movements to efficiently complete the lifting and placement of heavy objects.

[0003] In actual operation of port cranes, the protective effect of existing pulley cover assemblies is far from meeting the actual needs. Due to the unscientific and unreasonable design structure, the assembly is unable to provide a stable and effective limit on the working position of the steel rope. Under the frequent and long-term operation of the crane, the steel rope is continuously in high-intensity and high-frequency dynamic motion. The existing pulley cover assembly cannot provide reliable restraint for the steel rope. Over time, the position of the steel rope gradually shifts due to continuous shaking and friction, and it is very likely to eventually fall off the normal working track. Once the steel rope falls off, the crane will instantly lose effective control of the load, and the load may fall due to loss of control. This will not only cause serious damage to the expensive equipment in the port, but also pose a huge threat to the life safety of on-site personnel, causing incalculable safety accidents. Utility Model Content

[0004] In order to overcome the above-mentioned defects in the prior art, the present invention provides a pulley cover assembly for port machinery cranes with protective functions.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a pulley cover assembly for a port crane with protective function, including a protective cover, a rotating shaft rotatably installed inside the protective cover, a pulley fixedly installed on the surface of the rotating shaft, a pressing component inside the protective cover, and an anti-falling component inside the protective cover.

[0006] The pressing assembly includes a one-way threaded rod, which is threadedly installed inside the protective cover. An L-shaped plate is rotatably mounted on the bottom of the one-way threaded rod. A slider is slidably mounted inside the protective cover. A limit rod is fixedly mounted inside the L-shaped plate. A fixing frame is fixedly mounted on the surface of the limit rod. A movable column is slidably mounted inside the fixing frame. A spring is sleeved on the surface of the movable column. A circular plate is fixedly mounted on the top of the movable column. A mounting frame is fixedly mounted on the bottom of the movable column. A first shaft is rotatably mounted inside the mounting frame.

[0007] Furthermore, the anti-fall-off component includes a bidirectional threaded rod, which is rotatably mounted inside the L-shaped plate. A movable block is threaded onto the surface of the bidirectional threaded rod, and a limiting plate is fixedly mounted on the bottom of the movable block. A second shaft is rotatably mounted inside the limiting plate.

[0008] Furthermore, a first turntable is fixedly installed on the top of the one-way threaded rod. When a rotation operation is applied to the first turntable, the rotational power is stably and effectively transmitted to the one-way threaded rod, causing the one-way threaded rod to start rotating.

[0009] Furthermore, the L-shaped plate and the slider are fixedly connected. By rotating the one-way threaded rod, the slider, with its own stable limiting function, restricts the L-shaped plate to move only in the vertical direction, so that the L-shaped plate will not deviate in other directions. Thus, under the rotation drive of the one-way threaded rod and the limiting action of the slider, the L-shaped plate can move smoothly in the vertical direction. Under the limiting action of the slider, the L-shaped plate can move vertically.

[0010] Furthermore, one end of the spring abuts against the fixed frame, and the other end of the spring abuts against the mounting frame, applying an external force to the mounting frame. This external force pushes the mounting frame to move in a specific direction. Under the action of the external force, the position of the mounting frame changes, and the spring closely connected to it is gradually compressed due to the movement of the mounting frame. The spring accumulates elastic potential energy generated by the compression. Once the external force applied to the mounting frame is removed, the spring begins to release the elastic potential energy accumulated inside. Under the strong action of the spring's elastic restoring force, it generates a force opposite to the previous compression direction. This force acts on the mounting frame, driving the mounting frame to gradually return to its initial position along the original path, realizing the reset action of the mounting frame.

[0011] Furthermore, a second turntable is fixedly installed on the side of the bidirectional threaded rod, and the moving block is slidably installed on the surface of the limiting rod. When a rotation operation is applied to the second turntable, the rotational power is stably and effectively transmitted to the bidirectional threaded rod, causing the bidirectional threaded rod to start rotating. The limiting rod, with its own stable limiting function, restricts the moving block to move only in the horizontal direction, so that the moving block will not deviate in other directions. Thus, under the rotational drive of the bidirectional threaded rod and the limiting action of the limiting rod, the moving block can move smoothly in the horizontal direction.

[0012] The beneficial effects of this utility model are that, by rotating the bidirectional threaded rod, the two limiting plates can move towards each other and abut against the surface of the steel cable, preventing the steel cable from detaching from the pulley due to jumping. By rotating the unidirectional threaded rod, the first shaft can abut against the surface of the steel cable. In conjunction with the spring, the friction caused by the jumping of the steel cable and external components can be reduced, thus extending the service life of the steel cable. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the protective cover, rotating shaft, and pulley structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the unidirectional threaded rod, L-shaped plate, and slider structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the fixed frame, movable column, and spring structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the limiting plate and the second shaft structure of this utility model.

[0019] In the diagram: 1. Protective cover; 2. Rotating shaft; 3. Pulley; 4. One-way threaded rod; 5. L-shaped plate; 6. Slider; 7. Limiting rod; 8. Fixing frame; 9. Moving column; 10. Spring; 11. Circular plate; 12. Mounting frame; 13. First shaft; 14. Two-way threaded rod; 15. Moving block; 16. Limiting plate; 17. Second shaft. Detailed Implementation

[0020] To more clearly illustrate the technical solution of this utility model, the following description is made in conjunction with the accompanying drawings. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings and embodiments without creative effort, and all of them fall within the protection scope of this utility model.

[0021] according to Figure 1-5 As shown, a protective pulley cover assembly for a port crane includes a protective cover 1, a rotating shaft 2 rotatably mounted inside the protective cover 1, a pulley 3 fixedly mounted on the surface of the rotating shaft 2, a pressing component inside the protective cover 1, and an anti-falling component inside the protective cover 1.

[0022] The pressing assembly includes a one-way threaded rod 4, which is threadedly installed inside the protective cover 1. A first turntable is fixedly installed on the top of the one-way threaded rod 4. When the first turntable is rotated, the rotational power is stably and effectively transmitted to the one-way threaded rod 4, causing it to rotate. An L-shaped plate 5 is rotatably installed on the bottom of the one-way threaded rod 4. A slider 6 is slidably installed inside the protective cover 1. The L-shaped plate 5 and the slider 6 are fixedly connected. By rotating the one-way threaded rod 4, the slider 6, with its stable limiting function, restricts the L-shaped plate 5 to move only in the vertical direction, preventing it from shifting in other directions. Thus, under the rotational drive of the one-way threaded rod 4 and the limiting action of the slider 6, the L-shaped plate 5 moves smoothly in the vertical direction. Under the limiting action of the slider 6, the L-shaped plate 5 can move vertically. A limit rod 7 is fixedly installed inside the L-shaped plate 5. A fixing frame 8 is fixedly installed on the surface of the limit rod 7. A moving column 9 is slidably installed inside the fixing frame 8. A spring 10 is fitted onto the surface of the column 9. A circular plate 11 is fixedly installed on the top of the movable column 9, and a mounting bracket 12 is fixedly installed on the bottom of the movable column 9. One end of the spring 10 abuts against the fixed bracket 8, and the other end of the spring 10 abuts against the mounting bracket 12. An external force is applied to the mounting bracket 12, which pushes the mounting bracket 12 to move in a specific direction. Under the action of the external force, the position of the mounting bracket 12 changes, and the spring 10, which is closely connected to it, is gradually compressed due to the movement of the mounting bracket 12. The spring 10 stores the elastic potential energy generated by the compression. Once the external force applied to the mounting bracket 12 is removed, the spring 10 begins to release the elastic potential energy stored inside. Under the strong action of the elastic restoring force of the spring 10, it generates a force opposite to the previous compression direction. This force acts on the mounting bracket 12, causing the mounting bracket 12 to gradually return to its initial position along the original path, realizing the reset action of the mounting bracket 12. A first shaft 13 is rotatably installed inside the mounting bracket 12.

[0023] The anti-fall-off component includes a bidirectional threaded rod 14, which is rotatably mounted inside the L-shaped plate 5. A movable block 15 is threaded onto the surface of the bidirectional threaded rod 14. A second turntable is fixedly mounted on the side of the bidirectional threaded rod 14. The movable block 15 is slidably mounted on the surface of the limiting rod 7. When a rotation operation is applied to the second turntable, the rotational power is stably and effectively transmitted to the bidirectional threaded rod 14, causing the bidirectional threaded rod 14 to start rotating. The limiting rod 7, with its stable limiting function, restricts the movable block 15 to move only in the horizontal direction, preventing the movable block 15 from deviating in other directions. Thus, under the rotational drive of the bidirectional threaded rod 14 and the limiting action of the limiting rod 7, the movable block 15 moves smoothly in the horizontal direction. A limiting plate 16 is fixedly mounted on the bottom of the movable block 15, and a second shaft 17 is rotatably mounted inside the limiting plate 16.

[0024] In use, the steel cable passes over the pulley 3. By rotating the bidirectional threaded rod 14, the limiting rod 7, with its stable limiting function, restricts the moving block 15 to move only in the horizontal direction. This drives the two limiting plates 16 to move towards each other and abut against the surface of the steel cable, preventing the steel cable from jumping off the pulley 3. By rotating the unidirectional threaded rod 4, the slider 6, with its stable limiting function, restricts the L-shaped plate 5 to move only in the vertical direction. This allows the limiting rod 7 to drive the fixing frame 8 to move downward, allowing the first shaft 13 to abut against the surface of the steel cable. In conjunction with the spring 10, this reduces the friction caused by the jumping of the steel cable and external components, extending the service life of the steel cable.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] 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.

Claims

1. A protective pulley cover assembly for a port machinery crane, comprising a protective cover (1), characterized in that: The protective cover (1) is rotatably mounted with a rotating shaft (2), and a pulley (3) is fixedly mounted on the surface of the rotating shaft (2). The protective cover (1) is equipped with a pressing component and an anti-falling component. The pressing assembly includes a one-way threaded rod (4), which is threaded inside the protective cover (1). An L-shaped plate (5) is rotatably mounted on the bottom of the one-way threaded rod (4). A slider (6) is slidably mounted inside the protective cover (1). A limit rod (7) is fixedly mounted inside the L-shaped plate (5). A fixing frame (8) is fixedly mounted on the surface of the limit rod (7). A moving column (9) is slidably mounted inside the fixing frame (8). A spring (10) is sleeved on the surface of the moving column (9). A circular plate (11) is fixedly mounted on the top of the moving column (9). A mounting frame (12) is fixedly mounted on the bottom of the moving column (9). A first shaft (13) is rotatably mounted inside the mounting frame (12).

2. The protective pulley cover assembly for a port machinery crane according to claim 1, characterized in that, The anti-fall-off component includes a bidirectional threaded rod (14), which is rotatably mounted inside the L-shaped plate (5). A movable block (15) is threaded onto the surface of the bidirectional threaded rod (14). A limiting plate (16) is fixedly mounted at the bottom of the movable block (15). A second shaft (17) is rotatably mounted inside the limiting plate (16).

3. The protective pulley cover assembly for a port machinery crane according to claim 1, characterized in that, The top of the one-way threaded rod (4) is fixedly mounted with a first turntable.

4. A protective pulley cover assembly for a port machinery crane according to claim 1, characterized in that, The L-shaped plate (5) and the slider (6) are fixedly connected.

5. A protective pulley cover assembly for a port machinery crane according to claim 1, characterized in that, One end of the spring (10) abuts against the fixing bracket (8), and the other end of the spring (10) abuts against the mounting bracket (12).

6. A protective pulley cover assembly for a port machinery crane according to claim 2, characterized in that, The second turntable is fixedly installed on the side of the bidirectional threaded rod (14), and the moving block (15) is slidably installed on the surface of the limiting rod (7).

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