Crane pulley structure convenient to quickly mount

Abstract

The utility model relates to the technical field of crane pulleys, in particular to a crane pulley structure convenient to quickly install. According to the technical scheme, the device comprises a pair of connecting plates and a core wheel arranged in the middle of the connecting plates, and further comprises a center shaft rod movably inserted in the connecting plates and the core wheel, and one end of the center shaft rod is fixedly connected with a clamping head. According to the crane pulley dismounting device, the central shaft rod, the clamping head, the locking mechanism, the rotating mechanism and other structures are matched, so that parts generated by dismounting the crane pulley have the characteristics of simple structure and larger size. According to the structure, on one hand, the number of parts is small, the size is large, the possibility that the parts slip or are hidden by mistake is greatly reduced, the part loss probability is effectively reduced, unnecessary supplementary purchasing caused by part loss is avoided, and endless delay of the maintenance process is prevented; and on the other hand, parts with large sizes are easier to operate in mounting and dismounting links, repeated operation and frequent adjustment are greatly reduced, and the efficiency of overall dismounting work is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of crane pulley technology, and in particular to a crane pulley structure that is easy to install quickly. Background Technology

[0002] Crane pulleys are an important mechanical component in cranes, typically used to change the direction of movement of ropes or cables and to reduce friction by providing support. They are part of the crane's lifting system, helping to lift, move, and control heavy objects. Currently, some pulleys require disassembly before installation. This design facilitates installation and replacement, and their fixing structure usually uses multiple bolts. During disassembly, the small size of the bolted parts poses a risk of loss. Furthermore, after removing multiple bolts, the parts must be sorted in order to avoid confusion. The specifications and sizes of bolts and accessories for different components may vary; if they are not strictly labeled and categorized in order, parts can easily become mismatched, making accurate matching during assembly difficult and hindering rapid installation. Utility Model Content

[0003] The purpose of this utility model is to address the problem that while the current design of crane pulleys is convenient for disassembly and installation, parts are easily lost or misplaced during disassembly, affecting assembly efficiency. This utility model proposes a crane pulley structure that is easy to install quickly.

[0004] The technical solution of this utility model is as follows: a crane pulley structure that is easy to install quickly, including a pair of connecting plates and a core wheel disposed in the middle, and further including: a central shaft rod that is movably inserted into the connecting plates and the core wheel, one end of the central shaft rod being fixedly connected to a clamp; a locking mechanism, installed at the other end of the central shaft rod and clamping the connecting plates and the core wheel with the clamp; and a rotation mechanism disposed at one end of the central shaft rod to open and close the locking mechanism.

[0005] Optionally, the locking mechanism includes a pair of L-shaped locking blocks slidably connected to the other end of the central shaft. A partition is fixedly connected inside the other end of the central shaft. A pair of return springs corresponding to the L-shaped locking blocks are provided inside the other end of the central shaft. One end of each return spring is fixedly connected to the partition, and the other end of each return spring is fixedly connected to the corresponding L-shaped locking block.

[0006] Optionally, one end of each L-shaped card block is provided with a pair of bevels.

[0007] Optionally, the rotating mechanism includes a central rotating groove in the middle of the partition, a central rotating rod rotatably connected inside the central rotating groove, a rotating block fixedly connected to one end of the central rotating rod away from the central rotating groove, a pair of abutting blocks fixedly connected to the outer wall of the rotating block to abut against the L-shaped locking block, and a pair of arc-shaped grooves for the abutting blocks to be engaged at the other end of each L-shaped locking block.

[0008] Optionally, a rotating head is fixedly connected to the end of the rotating block away from the central rotating rod, and a second hexagonal groove is provided at the end of the rotating head away from the rotating block.

[0009] Optionally, a support shaft is rotatably connected to one end of one pair of connecting plates, and a hook is fixedly connected to the outer wall of the middle part of the support shaft.

[0010] Optionally, a splicing rod is fixedly connected to the inner wall of the other end of the connecting plate, and mounting holes for the central shaft and the rotating head to pass through are opened in the middle of the connecting plate and the core wheel.

[0011] Optionally, the card head is provided with a first hexagonal groove that has the same shape as the second hexagonal groove.

[0012] In summary, this application includes at least one of the following beneficial technical effects:

[0013] This invention utilizes a combination of a central shaft, a clamp, a locking mechanism, and a rotating mechanism to achieve a streamlined structure and larger size for the components produced during crane pulley disassembly. This design, on the one hand, reduces the number and size of components, significantly decreasing the possibility of slippage or accidental concealment, effectively reducing the probability of part loss, avoiding unnecessary supplementary procurement due to missing parts, and preventing unwarranted delays in the maintenance process; on the other hand, the larger size of the components makes installation and disassembly easier, greatly reducing repetitive work and frequent adjustments, and significantly improving the overall efficiency of the disassembly process. Attached Figure Description

[0014] Figure 1 A schematic diagram of a crane pulley structure that is easy to install quickly is provided according to this utility model;

[0015] Figure 2 for Figure 1 A schematic diagram of the split structure;

[0016] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure connecting the central shaft and the rotating head;

[0017] Figure 4 for Figure 3 A schematic diagram of the split structure;

[0018] Figure 5 for Figure 4 A schematic diagram of the intermediate turntable.

[0019] Reference numerals: 1. Connecting plate; 11. Splicing rod; 12. Mounting hole; 2. Hook; 21. Support shaft; 3. Core wheel; 4. Central shaft; 41. L-shaped locking block; 42. Angled angle; 43. Arc groove; 44. Return spring; 45. Partition plate; 46. Central rotating groove; 47. Locking head; 471. First hexagonal groove; 5. Rotating head; 51. Second hexagonal groove; 52. Rotating block; 53. Abutment block; 54. Central rotating rod. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0021] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0022] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a 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 a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example

[0027] like Figures 1 to 5 As shown, the present invention proposes a crane pulley structure that is easy to install quickly, including a pair of connecting plates 1 and a core wheel 3 disposed in the middle. One end of the pair of connecting plates 1 is rotatably connected to a support shaft 21. A hook 2 is fixedly connected to the outer wall of the middle part of the support shaft 21. A central shaft 4 is movably inserted inside the connecting plates 1 and the core wheel 3. One end of the central shaft 4 is fixedly connected to a clamp 47. A first hexagonal groove 471 with the same shape as the second hexagonal groove 51 is opened on the clamp 47.

[0028] Among them, such as Figures 2 to 4 As shown, a locking mechanism for locking the connecting plate 1 and the core wheel 3 is installed at the other end of the central shaft 4 and the clamp 47. The locking mechanism includes a pair of L-shaped clamps 41 slidably connected inside the other end of the central shaft 4. Each L-shaped clamp 41 has a pair of bevels 42 at one end. The bevels 42 are such that when one end of the L-shaped clamp 41 abuts against the outer wall of the connecting plate 1, only force can make the L-shaped clamp 41 disengage from the central shaft 4. When one end of the L-shaped clamp 41 is completely disengaged and locks the outer wall of the connecting plate 1, the clamp 47 and the pair of L-shaped clamps 41 are tightly locked against the corresponding outer wall of the connecting plate 1. A partition 45 is fixedly connected inside the other end of the central shaft 4. A pair of return springs 44 corresponding to the L-shaped clamps 41 are provided inside the other end of the central shaft 4. The return springs 44 cause the unlocked L-shaped clamps 41 to automatically retract into the central shaft 4 when there is no resistance. When the L-shaped locking block 41 is locked against the outer wall of the connecting plate 1, it needs to be struck forcefully with a tool to retract into the central shaft 4. One end of the return spring 44 is fixedly connected to the partition plate 45, and the other end of the return spring 44 is fixedly connected to the corresponding L-shaped locking block 41.

[0029] In addition, such as Figures 3 to 5As shown, one end of the central shaft 4 is provided with a rotating mechanism that switches the locking mechanism. The rotating mechanism includes a central rotating groove 46 in the middle of the partition 45. A central rotating rod 54 is rotatably connected inside the central rotating groove 46. A rotating block 52 is fixedly connected to one end of the central rotating rod 54 away from the central rotating groove 46. A pair of abutting blocks 53 that abut against the L-shaped locking block 41 are fixedly connected to the outer wall of the rotating block 52. A pair of arc-shaped grooves 43 are provided at the other end of the L-shaped locking block 41 for the abutting blocks 53 to be inserted. The arc-shaped grooves 43 are used to lock the abutting blocks 53 to ensure that the rotating block 52 cannot be easily dislodged. Only a hexagonal wrench can be used to rotate the rotating head 5.

[0030] It is worth noting that, such as Figures 2 to 5 As shown, a rotating head 5 is fixedly connected to one end of the rotating block 52 away from the central rotating rod 54. A second hexagonal groove 51 is provided at the end of the rotating head 5 away from the rotating block 52. Both the first hexagonal groove 471 and the second hexagonal groove 51 are for the hexagonal plate to be inserted and fixed for rotation.

[0031] Furthermore, such as Figures 1 to 2 As shown, splicing rods 11 are fixedly connected to the inner wall of the other end of the connecting plate 1, and a pair of splicing rods 11 are connected together to form a round rod. The connecting plate 1 and the core wheel 3 are both provided with mounting holes 12 for the central shaft rod 4 and the rotating head 5 to pass through.

[0032] In this embodiment, when using a crane pulley structure that facilitates quick installation, such as Figure 1 As shown, first prepare a pair of hex wrenches. Insert the end of one hex wrench into the first hexagonal groove 471, preventing the chuck 47 from rotating. Then insert the end of the other hex wrench into the second hexagonal groove 51 and rotate it, as shown. Figure 3 As shown, the second hexagonal groove 51 drives the rotating head 5 to rotate, and the rotating head 5 in turn drives the rotating block 52 and a pair of abutment blocks 53 to rotate, thereby causing the abutment blocks 53 to disengage from the corresponding arc-shaped groove 43. At this time, the L-shaped locking block 41 automatically retracts into one end of the central shaft 4 due to the elastic tension of the corresponding return spring 44, so that the central shaft 4 and the rotating head 5 can easily pass through the mounting hole 12 in the middle of the connecting plate 1 and the core wheel 3, thereby causing the connecting plate 1 to rotate around the support shaft 21, thus completing the disassembly of the pulley.

[0033] When it is necessary to reinstall the disassembled pulley, simply rotate the connecting plate 1 around the support shaft 21, so that the splicing rods 11 at the ends of the connecting plate 1 interlock. Then place the core wheel 3 in the middle of the pair of connecting plates 1, ensuring that the mounting hole 12 in the middle of the core wheel 3 coincides with the mounting hole 12 in the middle of the connecting plate 1. Next, simply pass the original central shaft 4 and the rotating head 5 through the mounting hole 12 and... Figure 1The state is shown. Finally, simply insert the end of one hexagonal wrench into the first hexagonal groove 471, and then insert the other hexagonal wrench into the second hexagonal groove 51 and rotate it, so that the abutment 53 re-engages into the corresponding arc-shaped groove 43. At this time, the L-shaped locking block 41, near the bevel 42, will lock against the outer wall of the connecting plate 1, thus preventing the central shaft 4 and the rotating head 5 from passing through the mounting hole 12, thereby completing the installation of the central shaft 4 and the rotating head 5 in the middle of the connecting plate 1 and the core wheel 3.

[0034] The preferred embodiments of this utility model described above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A crane pulley structure that is easy to install quickly, comprising a pair of connecting plates (1) and a core wheel (3) disposed therein, characterized in that, Also includes: A central shaft (4) is movably inserted into the connecting plate (1) and the core wheel (3), and a clamp (47) is fixedly connected to one end of the central shaft (4); A locking mechanism is installed at the other end of the central shaft (4) and engages with the chuck (47) to lock the connecting plate (1) and the core wheel (3); A rotating mechanism is provided at one end of the central shaft (4) to switch the locking mechanism on and off.

2. The crane pulley structure for easy and quick installation according to claim 1, characterized in that, The locking mechanism includes a pair of L-shaped blocks (41) slidably connected to the other end of the central shaft (4). A partition (45) is fixedly connected inside the other end of the central shaft (4). A pair of return springs (44) corresponding to the L-shaped blocks (41) are provided inside the other end of the central shaft (4). One end of each return spring (44) is fixedly connected to the partition (45), and the other end of each return spring (44) is fixedly connected to the corresponding L-shaped block (41).

3. The crane pulley structure for easy and quick installation according to claim 2, characterized in that, Each of the L-shaped blocks (41) has a pair of bevels (42) at one end.

4. A crane pulley structure for easy and quick installation according to claim 2, characterized in that, The rotating mechanism includes a central rotating groove (46) in the middle of the partition (45), a central rotating rod (54) is rotatably connected inside the central rotating groove (46), a rotating block (52) is fixedly connected to one end of the central rotating rod (54) away from the central rotating groove (46), a pair of abutting blocks (53) are fixedly connected to the outer wall of the rotating block (52) to abut against the L-shaped locking block (41), and a pair of arc-shaped grooves (43) for the abutting blocks (53) to be inserted are opened at the other end of the L-shaped locking block (41).

5. A crane pulley structure for easy and quick installation according to claim 4, characterized in that, The rotating block (52) is fixedly connected to a rotating head (5) at one end away from the central rotating rod (54), and a second hexagonal groove (51) is provided at the other end of the rotating head (5) away from the rotating block (52).

6. A crane pulley structure for easy and quick installation according to claim 1, characterized in that, A support shaft (21) is rotatably connected to one end of a pair of connecting plates (1), and a hook (2) is fixedly connected to the outer wall of the middle part of the support shaft (21).

7. A crane pulley structure for easy and quick installation according to claim 1, characterized in that, The inner wall of the other end of the connecting plate (1) is fixedly connected with a splicing rod (11), and the middle of the connecting plate (1) and the core wheel (3) are provided with mounting holes (12) for the central shaft rod (4) and the rotating head (5) to pass through.

8. A crane pulley structure for easy and quick installation according to claim 1, characterized in that, The card head (47) has a first hexagonal groove (471) with the same shape as the second hexagonal groove (51).

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