Pulley lifting hook of crane crane

Abstract

The utility model provides a pulley lifting hook of a crane, which belongs to the technical field of parts of hoisting equipment, and aims to solve the problems that the contact position of the lifting hook and a shell is directly stressed, the abrasion is serious, the shell is easy to deform at the stressed position of the lifting hook during long-term use, the lifting hook is inclined, the stress is non-uniform, and the potential safety hazard is easy to cause. The two shells are connected in a spaced mode through a connecting pin, a rotating shaft is arranged between the two shells in a penetrating mode, the rotating shaft is sleeved with a pulley, hanging pieces are installed at the bottoms of the two shells and comprise hanging shafts, hook bodies are arranged on the hanging shafts in a penetrating mode, installation cavities are formed in the side walls of the bottoms of the shells, bearing blocks are arranged in the installation cavities, and movable holes are formed in the bearing blocks. The two ends of the hanging shaft penetrate through the corresponding movable holes, the middle of the shell vertically protrudes to form a framework, and the bearing block is located on the framework.

Description

Technical Field

[0001] This utility model belongs to the technical field of lifting equipment parts, and more specifically, it relates to a crane pulley hook. Background Technology

[0002] Overhead cranes (also known as bridge cranes) are core equipment for material handling in the industrial field. They are rail-mounted lifting devices that span workshops or warehouses and consist of a bridge structure, a lifting trolley, a trolley traveling mechanism, pulley blocks, hooks, and an electrical control system. The pulley structure is an essential structure for saving effort, and the hooks used on some overhead cranes are also equipped with pulley hooks. Currently, pulley hooks are formed by mounting the hook and pulley on a single housing. The cable wound around the pulley lifts the hook, which saves effort. However, the point where the hook contacts the housing is directly stressed, resulting in severe wear. Over long-term use, the housing is prone to deformation at the point where the hook is stressed, causing the hook to tilt, resulting in uneven stress and potential safety hazards.

[0003] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a crane pulley hook in order to achieve a more practical purpose. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a crane pulley hook to solve the issues of the hook being directly stressed at the contact point with the housing, resulting in severe wear, and the housing easily deforming at the hook stress point during long-term use, leading to hook skew, uneven stress, and potential safety hazards.

[0005] The purpose and function of this utility model of a crane pulley hook are achieved by the following specific technical means:

[0006] A crane pulley hook includes two housings connected at intervals by a connecting pin. A rotating shaft passes through the two housings, and a pulley is sleeved on the rotating shaft. Lifting components are installed at the bottom of the two housings. Each lifting component includes a lifting shaft, and a hook body passes through the lifting shaft. An installation cavity is formed on the bottom side wall of the housing, and a bearing block is provided in the installation cavity. The bearing block has movable holes, and the two ends of the lifting shaft pass through the corresponding movable holes. A vertically protruding frame is formed in the middle of the housing, and the bearing block is located on the frame.

[0007] Furthermore, the upper end of the hook passes through the lifting shaft, and the end of the hook is provided with a limiting end, and a spring is provided between the limiting end and the lifting shaft.

[0008] Furthermore, a reinforcing sleeve is fitted on the lifting shaft, and a limiting groove is formed at the top of the reinforcing sleeve. The hook body passes through the reinforcing sleeve and the lifting shaft, and the spring is engaged between the bottom of the limiting end and the limiting groove.

[0009] Furthermore, the housing includes a winding portion and a suspension portion, wherein the winding portion and the suspension portion of the housing are hinged together, and the height dimension of the movable hole is greater than the diameter of the hanging shaft.

[0010] Furthermore, the support block includes a support plate and a mounting plate. The support plate protrudes from the center and is fitted into the mounting cavity. The mounting plate is detachably connected to the protruding surface of the support plate by bolts.

[0011] Furthermore, a bearing is fitted between the rotating shaft and the pulley.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The structural strength of the shell is enhanced by the frame structure on the shell. At the same time, the installation cavity on the shell allows the load-bearing block to act as an intermediate force carrier. During the long-term suspension of heavy objects by the hook, the load-bearing block can be quickly replaced after the movable hole in the load-bearing block deforms, reducing the possibility of tilting and uneven force distribution caused by deformation at the connection between the shell and the hook. Attached Figure Description

[0014] Figure 1 This is a perspective view of a crane pulley hook according to the present invention.

[0015] Figure 2 This is an exploded view of a crane pulley hook according to this utility model.

[0016] Figure 3 This is a cross-sectional view of a crane pulley hook according to the present invention.

[0017] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0018] 1. Housing; 2. Shaft; 3. Pulley; 4. Connecting pin; 5. Lifting component; 6. Hook; 7. Bearing block; 8. Mounting cavity; 9. Movable hole; 101. Winding part; 102. Suspension part; 501. Lifting shaft; 502. Reinforcing sleeve; 503. Limiting end; 504. Spring; 505. Limiting groove; 701. Bearing plate; 702. Mounting plate. Detailed Implementation

[0019] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0020] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship 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. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example:

[0023] As attached Figure 1 To be continued Figure 3 As shown:

[0024] This utility model provides a crane pulley hook, including two housings 1, which are connected at intervals by connecting pins 4. Multiple connecting pins 4 can be provided to increase the stability of the connection between the housings 1.

[0025] A rotating shaft 2 is inserted between the two housings 1, and a pulley 3 is fitted on the rotating shaft 2. A lifting component 5 is installed at the bottom of the two housings 1. A cable is wound on the pulley 3. The crane raises and lowers the hook by contracting or extending the cable. The pulley 3 requires less effort. A bearing is installed between the rotating shaft 2 and the pulley 3 to make the rotation of the pulley 3 smoother.

[0026] The lifting component 5 includes a lifting shaft 501, on which a hook 6 passes. A mounting cavity 8 is provided on the bottom side wall of the housing 1, and a bearing block 7 is provided in the mounting cavity 8. The bearing block 7 has movable holes 9. The two ends of the lifting shaft 501 pass through the corresponding movable holes 9. The middle part of the housing 1 protrudes vertically to form a skeleton, and the bearing block 7 is located on the skeleton. The skeleton strengthens the structural strength of the housing 1. At the same time, the mounting cavity 8 on the housing 1 and the bearing block 8 as the intermediate force carrier increase the force-bearing area of ​​the housing 1. In addition, during the long-term suspension of heavy objects by the hook 6, the bearing block 7 can be quickly replaced after the movable holes 9 in the bearing block 8 deform.

[0027] like Figure 2As shown, the carrier block 7 includes a support plate 701 and a mounting plate 702. The support plate 701 protrudes from the middle and is locked in the mounting cavity 8. When the hook body 6 suspends an item, the protruding part of the support plate 701 transmits the force to the housing 1. The mounting plate 702 is detachably connected to the protruding surface of the support plate 701 by bolts. The carrier block 7 can be quickly replaced from the housing 1, reducing the situation of tilting and uneven force caused by deformation at the connection between the housing 1 and the hook body 6.

[0028] The housing 1 includes a winding part 101 and a suspension part 102. The winding part 101 and the suspension part 102 of the housing 1 are hinged. The height of the movable hole 9 is greater than the diameter of the hanging shaft 501. After the mounting plate 702 is disassembled, the suspension part 102 can be flipped to allow the bearing plate 701 to be disengaged from the hanging shaft 501, making the bearing plate 701 easier to disassemble. At the same time, the hook body 6 can be disassembled. In addition, the size of the movable hole 9 can prevent the suspension part 102 from being stuck by the hanging shaft 501 when it is flipped.

[0029] The upper rod of the hook body 6 passes through the lifting shaft 501, and the end of the hook body 6 is provided with a limiting end 503. A spring 504 is provided between the limiting end 503 and the lifting shaft 501. The spring 504 is provided so that when the bottom of the hook body 6 is hung with a heavy object and lifted, the spring 504 is first subjected to force and plays a role in unloading and buffering, so as to avoid the lifting shaft 504 from impacting and deforming the shell 1 due to excessive lifting speed.

[0030] A reinforcing sleeve 502 is fitted onto the lifting shaft 501. A limiting groove 505 is provided at the top of the reinforcing sleeve 502. The hook body 6 passes through the reinforcing sleeve 502 and the lifting shaft 501. The spring 504 is locked between the bottom of the limiting end 503 and the limiting groove 505. The reinforcing sleeve 502 widens the force-bearing area of ​​the spring 504. At the same time, the limiting groove 505 restricts the position of the spring 504, making the compression and release of the spring 504 more stable and preventing slippage and tilting.

[0031] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A crane pulley hook, characterized in that: It includes two housings (1), which are connected at intervals by connecting pins (4). A rotating shaft (2) is inserted between the two housings (1). A pulley (3) is fitted on the rotating shaft (2). A lifting member (5) is installed at the bottom of the two housings (1). The lifting member (5) includes a lifting shaft (501). A hook (6) is inserted on the lifting shaft (501). An installation cavity (8) is opened on the bottom side wall of the housing (1). A bearing block (7) is provided in the installation cavity (8). An movable hole (9) is opened on the bearing block (7). The two ends of the lifting shaft (501) are inserted into the corresponding movable holes (9). The middle part of the housing (1) protrudes vertically to form a skeleton. The bearing block (7) is located on the skeleton.

2. The crane pulley hook as described in claim 1, characterized in that: The upper end rod of the hook (6) passes through the lifting shaft (501), and the end of the hook (6) is provided with a limiting end (503), and a spring (504) is provided between the limiting end (503) and the lifting shaft (501).

3. A crane pulley hook as described in claim 2, characterized in that: A reinforcing sleeve (502) is fitted on the lifting shaft (501). A limiting groove (505) is opened on the top of the reinforcing sleeve (502). The hook (6) passes through the reinforcing sleeve (502) and the lifting shaft (501). The spring (504) is locked between the bottom of the limiting end (503) and the limiting groove (505).

4. A crane pulley hook as described in claim 1, characterized in that: The housing (1) includes a winding part (101) and a suspension part (102), wherein the winding part (101) and the suspension part (102) of the housing (1) are hinged, and the height dimension of the movable hole (9) is greater than the diameter of the hanging shaft (501).

5. A crane pulley hook as described in claim 1, characterized in that: The support block (7) includes a support plate (701) and a mounting plate (702). The support plate (701) protrudes from the middle and is fitted into the mounting cavity (8). The mounting plate (702) is detachably connected to the protruding surface of the support plate (701) by bolts.

6. A crane pulley hook as described in claim 1, characterized in that: A bearing is fitted between the rotating shaft (2) and the pulley (3).

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