A detachable lifting tool special for main shaft bearing

Abstract

This application discloses a detachable lifting fixture specifically for spindle bearings, relating to the technical field of mechanical lifting. It includes a boom module for connecting to lifting equipment and a hook connected to the boom module for lifting the bearing. The boom module is equipped with an axial pressure unit and a radial pressure unit. The axial pressure unit provides a clamping force along the bearing's axial direction to the hook, ensuring the hook's bearing position is pressed against the bearing's end face. The radial pressure unit provides a clamping force along the bearing's radial direction to the hook, ensuring the hook's sidewall is pressed against the bearing's side. This achieves a secure lifting effect for spindle bearings, solving the problem of lifting bearings without lifting holes. It avoids the situation in traditional processes where lifting and installation are impossible due to the lack of lifting threaded holes. Furthermore, it eliminates the need to machine lifting threaded holes on the bearing, reducing processing difficulty and quality risks.

Description

Technical Field

[0001] This application relates to the technical field of mechanical hoisting, and in particular to a detachable hoisting fixture specifically for spindle bearings. Background Technology

[0002] Currently, the traditional method for installing and lifting wind turbine main shaft bearings relies primarily on the threaded holes on the bearings. Lifting equipment is then connected to the bearings using bolts and other fasteners. However, this traditional method has two drawbacks. First, it requires that the main shaft bearings have threaded holes for lifting; otherwise, installation is impossible. This significantly limits the application of bearings without such holes. Second, machining these threaded holes is difficult, requiring high-precision equipment and processes. It can also compromise the structural strength of the bearing, leading to quality problems and increasing overall quality risks. Utility Model Content

[0003] To address the problems existing in the prior art, this application provides a detachable lifting fixture specifically for spindle bearings.

[0004] This application provides a detachable lifting fixture specifically for spindle bearings, employing the following technical solution: A detachable lifting fixture for spindle bearings includes a boom module for connecting to a lifting device, and a hook connected to the boom module for lifting the bearing. The boom module is provided with an axial pressure unit for providing a clamping force along the bearing axial direction to the hook and for pressing the load-bearing position of the hook against the bearing end face. The boom module is also provided with a radial pressure unit for providing a clamping force along the bearing radial direction to the hook and for pressing the side wall of the hook against the side of the bearing.

[0005] Optionally, the boom module includes a first claw arm and a second claw arm that are hinged to each other, and a lifting shackle installed at the hinge position between the first claw arm and the second claw arm; The axial pressure unit includes an axial pressure arm hinged to the first lifting claw arm; The radial pressure unit includes a radial pressure arm hinged to the second lifting claw arm; The axial pressure arm and the radial pressure arm are rotatably connected to each other. The hook is rotatably connected to the axial pressure arm. A connecting shaft is slidably provided on the radial pressure arm along the length direction of the radial pressure arm. The hook is rotatably connected to the connecting shaft. The axial pressure arm is used to press the top of the bearing.

[0006] Optionally, the radial pressure arm is provided with an oblong hole along the length direction of the radial pressure arm, and the connecting shaft slides through the oblong hole along the length direction of the radial pressure arm.

[0007] Optionally, the axial pressure arm is provided with an end face limiting block for abutting against the bearing end face, and the end face limiting block is made of high temperature resistant electrical bakelite material.

[0008] Optionally, the end face limiting block has a rotary structure and is rotatably mounted on the axial pressure arm for rolling connection with the end face of the bearing.

[0009] Optionally, the hook is detachably mounted on the axial pressure arm, and the connecting shaft is detachably connected to the hook.

[0010] Optionally, a radial limiting block is also included, which is used to abut against the side wall of the hook and restrict the movement of the hook in the radial direction of the bearing.

[0011] Optionally, the radial limiting block is provided with a slot, and the radial limiting block is engaged with the bearing through the slot.

[0012] Optionally, the radial limiting block is provided with a limiting groove, which is adapted to the hook.

[0013] In summary, this application includes at least one of the following beneficial technical effects: 1. This application utilizes axial pressure units and radial pressure units to provide axial and radial clamping forces to the hook, respectively, so that the hook can firmly clamp the bearing during the lifting process. This achieves safe and efficient bearing lifting with lower operating force, solves the problem of lifting bearings without lifting holes, avoids the situation in traditional processes where lifting and installation are impossible due to the lack of lifting threaded holes, and eliminates the need to machine lifting threaded holes on the bearing, reducing processing difficulty and quality risks.

[0014] 2. This application has an end face limiting block made of high temperature resistant electrical bakelite material on the axial pressure arm, which abuts against the bearing end face to prevent damage to the bearing surface.

[0015] 3. Designing the end face limiting block as a rotating structure and rotatably mounting it on the axial pressure arm allows it to roll into contact with the end face of the bearing, reducing friction with the bearing end face and improving the smoothness of the lifting process.

[0016] 4. The hook is detachably mounted on the axial pressure arm and the connecting shaft is detachably connected to the hook, allowing the tooling to be quickly disassembled and parts replaced, thus enhancing the compatibility of bearing hoisting.

[0017] 5. The radial limit block abuts against the side wall of the hook, restricting the movement of the hook in the radial direction of the bearing, preventing the hook from sliding outward when no force is applied, and playing a safety protection role. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2This is a structural front view of an embodiment of this application.

[0019] Explanation of reference numerals in the attached drawings: 1. Boom module; 11. First claw arm; 12. Second claw arm; 13. Lifting shackle; 14. Axial pressure arm; 141. End face limiting block; 15. Radial pressure arm; 151. Waist-shaped hole; 152. Connecting shaft; 2. Hook; 3. Radial limiting block; 31. Slot; 32. Limiting groove. Detailed Implementation

[0020] The following will be combined with the appendix Figure 1-2 The technical solutions in the embodiments of this utility model are described in further detail below. The described embodiments are only possible technical implementations of this utility model, but are not limited thereto. Other embodiments obtained by those skilled in the art in conjunction with the embodiments of this utility model without creative effort are also within the protection scope of this utility model.

[0021] This application discloses a detachable lifting fixture specifically for spindle bearings. (Refer to...) Figure 1 The system includes a boom module 1 for connecting to lifting equipment, a hook 2 connected to the boom module 1 for lifting the bearing, and a radial limiting block 3 installed on the bearing to restrict the radial movement of the hook 2 within the bearing. The boom module 1 is equipped with an axial pressure unit and a radial pressure unit. The axial pressure unit provides a clamping force along the bearing axial direction to the hook 2, ensuring the hook 2's bearing position is pressed against the bearing end face. The radial pressure unit provides a clamping force along the bearing radial direction to the hook 2, ensuring the hook 2's sidewall is pressed against the bearing side. This achieves the effect of securely lifting the main shaft bearing and is suitable for lifting bearings without lifting holes.

[0022] Reference Figure 1 and Figure 2 Specifically, the boom module 1 includes a first lifting arm 11 and a second lifting arm 12 that are hinged together, and a lifting shackle 13 installed at the hinge position between the first lifting arm 11 and the second lifting arm 12. The first lifting arm 11 and the second lifting arm 12 are typically made of metal, such as high-strength alloy steel, which can withstand significant tensile and compressive forces, ensuring safety during lifting. They can be rod-shaped with hinge holes at the ends, and are hinged together via pins or other connecting parts. The lifting shackle 13 is used to connect lifting equipment, such as the hook 2 of a crane. It is generally manufactured using forging processes and has good strength and toughness. During installation, the lifting shackle 13 is installed at the hinge position between the first lifting arm 11 and the second lifting arm 12 and connected to the pin at the hinge position, allowing for flexible connection to the lifting equipment.

[0023] Reference Figure 1 and Figure 2The axial pressure unit includes an axial pressure arm 14 hinged to the first lifting claw arm 11. The axial pressure arm 14 can also be made of alloy steel, with one end hinged to the first lifting claw arm 11 via a pin, allowing it to rotate about the hinge point. During lifting, the axial pressure arm 14 can convert the force transmitted by the first lifting claw arm 11 into a clamping force along the bearing axis.

[0024] Reference Figure 1 and Figure 2 The radial pressure unit includes a radial pressure arm 15 hinged to the second claw arm 12. The radial pressure arm 15 may also be made of alloy steel, and one end of it is hinged to the second claw arm 12 by a pin. The axial pressure arm 14 and the radial pressure arm 15 are rotatably connected to each other. This rotatable connection can be achieved by a pin and a bushing, ensuring that the two can rotate freely.

[0025] Reference Figure 2 The hook 2 is generally forged from high-strength steel, T-shaped, with a hook-shaped bottom. One side of the hook 2 is rotatably connected to the axial pressure arm 14 via a pin. A waist-shaped hole 151 is provided on the radial pressure arm 15 along its length. A connecting shaft 152, also a pin, is slidably mounted within the waist-shaped hole 151 along the length of the radial pressure arm 15. The hook 2 is sleeved on and rotatably connected to the connecting shaft 152, allowing the hook 2 to rotate on the connecting shaft 152. Its position can be adjusted as the connecting shaft 152 slides within the waist-shaped hole 151. Furthermore, the hook 2 is connected to the axial pressure arm 14 via a pin, and the connecting shaft 152 is also a pin, making the hook 2 detachable from both the axial pressure arm 14 and the radial pressure arm 15, facilitating replacement of the hook 2 according to different lifting requirements.

[0026] During the hoisting of the main shaft bearing, the axial pressure arm 14 and the radial pressure arm 15 rotate relative to each other. Utilizing the lever principle, the axial pressure arm 14 presses against the top of the bearing, providing axial clamping force to the hook 2 and restricting the vertical relative movement between the hook 2 and the main shaft bearing. Simultaneously, with the relative rotation between the hook 2 and the axial pressure arm 14, and in conjunction with the sliding of the connecting shaft 152 along the length of the radial pressure arm 15, a radial clamping force is provided to the hook 2, causing the side wall of the hook 2 to press against the side of the bearing, preventing the hook 2 from detaching from the bearing. This ensures that the hook 2 firmly clamps the bearing, achieving stable lifting of the bearing and solving the hoisting problem for bearings without lifting holes. Furthermore, it can lift bearings of different sizes and specifications, demonstrating high compatibility.

[0027] Reference Figure 1 and Figure 2Specifically, the axial pressure arm 14 is equipped with an end face limiting block 141 for abutting against the bearing end face. The end face limiting block 141 is made of high-temperature resistant electrical bakelite material. This material is relatively soft and can effectively prevent damage to the bearing surface. The end face limiting block 141 has a rotary structure and is rotatably connected to the axial pressure arm 14 via a pin. In this way, during the lifting process, while the axial pressure arm 14 is pressing against the top of the bearing, the end face limiting block 141 is in rolling contact with the end face of the bearing, which can reduce friction with the bearing end face and better protect the bearing surface.

[0028] Reference Figure 1 Specifically, the radial limiting block 3 can be made of metal or plastic, and its shape can be block-shaped or plate-shaped. The radial limiting block 3 is provided with a slot 31, and the radial limiting block 3 is engaged with the outer cage of the bearing through the slot 31. The size and shape of the slot 31 are adapted to the outer cage of the bearing, ensuring that the radial limiting block 3 can be firmly installed on the bearing. The radial limiting block 3 is also provided with a limiting groove 32, which is adapted to the hook 2. The hook 2 can be engaged in the limiting groove 32, further restricting the radial movement of the hook 2 and ensuring lifting stability. The radial limiting block 3 prevents the hook 2 from sliding outwards when not under force, providing a safety protection function.

[0029] In addition, the components are detachably connected by pins, which facilitates maintenance and replacement. It is suitable for spindle bearings of different sizes and specifications without lifting holes, which solves the dependence on lifting threaded holes in traditional processes, reduces costs, and improves lifting efficiency and safety.

[0030] Furthermore, during the bearing hoisting process, a safety rope can be tied to the bearing and directly connected to the hoisting equipment to further ensure the safety of the main shaft bearing during the hoisting process.

[0031] The implementation principle of this embodiment is as follows: the first claw arm 11 and the second claw arm 12 of the boom module 1 are hinged to each other and connected to the lifting equipment through the lifting shackle 13, providing a structural foundation for lifting; the axial pressure arm 14 is hinged to the first claw arm 11, and the radial pressure arm 15 is hinged to the second claw arm 12, and the two are rotatably connected to each other. During the lifting of the main shaft bearing, the axial pressure arm 14 and the radial pressure arm 15 rotate relative to each other, using the lever principle to press the top of the bearing with the axial pressure arm 14, providing axial clamping force to the hook 2 and restricting the vertical movement between the hook 2 and the main shaft bearing. The relative motion; simultaneously, with the relative rotation between the hook 2 and the axial pressure arm 14, and the sliding of the connecting shaft 152 in the radial length direction of the pressure arm 15, a radial clamping force can be provided to the hook 2, so that the side wall of the hook 2 abuts against the side of the bearing, preventing the hook 2 from detaching from the bearing, thereby firmly clamping the bearing with the hook 2, realizing stable lifting of the bearing, solving the lifting problem of bearing installation without lifting holes, avoiding the situation in traditional processes where lifting and installation are impossible due to the lack of lifting threaded holes, and at the same time, eliminating the need to process lifting threaded holes on the bearing, reducing processing difficulty and quality risks.

[0032] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A detachable lifting fixture specifically for spindle bearings, characterized in that, include: The boom module (1) is used to connect to the lifting equipment. A hook (2) connected to the boom module (1) for lifting the bearing; The boom module (1) is provided with an axial pressure unit for providing a clamping force along the bearing axis to the hook (2) and for pressing the load-bearing position of the hook (2) against the bearing end face. The boom module (1) is also provided with a radial pressure unit for providing a clamping force to the hook (2) along the bearing radial direction and for pressing the side wall of the hook (2) against the side of the bearing.

2. The detachable lifting tool for main shaft bearing as claimed in claim 1, characterized in that: The boom module (1) includes a first claw arm (11) and a second claw arm (12) that are hinged to each other, and a lifting shackle (13) installed at the hinge position between the first claw arm (11) and the second claw arm (12); The axial pressure unit includes an axial pressure arm (14) hinged to the first lifting claw arm (11); The radial pressure unit includes a radial pressure arm (15) hinged to the second claw arm (12); The axial pressure arm (14) and the radial pressure arm (15) are rotatably connected to each other. The hook (2) is rotatably connected to the axial pressure arm (14). A connecting shaft (152) is slidably provided on the radial pressure arm (15) along the length direction of the radial pressure arm (15). The hook (2) is rotatably connected to the connecting shaft (152). The axial pressure arm (14) is used to press the top of the bearing.

3. The detachable lifting tool for main shaft bearing as claimed in claim 2, characterized in that: The radial pressure arm (15) is provided with a waist-shaped hole (151) along the length direction of the radial pressure arm (15), and the connecting shaft (152) slides through the waist-shaped hole (151) along the length direction of the radial pressure arm (15).

4. The detachable lifting fixture for spindle bearings according to claim 2, characterized in that: The axial pressure arm (14) is provided with an end face limiting block (141) for abutting the bearing end face, and the end face limiting block (141) is made of high temperature resistant electrical bakelite material.

5. The detachable lifting fixture for spindle bearings according to claim 4, characterized in that: The end face limiting block (141) has a rotary structure and is rotatably mounted on the axial pressure arm (14) for rolling connection with the end face of the bearing.

6. The detachable lifting fixture for spindle bearings according to claim 2, characterized in that: The hook (2) is detachably mounted on the axial pressure arm (14), and the connecting shaft (152) is detachably connected to the hook (2).

7. The detachable lifting fixture for spindle bearings according to claim 1, characterized in that: It also includes a radial limiting block (3), which is used to abut against the side wall of the hook (2) and restrict the movement of the hook (2) in the bearing radial direction.

8. The detachable lifting fixture for spindle bearings according to claim 7, characterized in that: The radial limiting block (3) is provided with a slot (31), and the radial limiting block (3) is engaged with the bearing through the slot (31).

9. A detachable lifting fixture for spindle bearings according to claim 7, characterized in that: The radial limiting block (3) is provided with a limiting groove (32), which is adapted to the hook (2).

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