A special wrench for dismounting and mounting the locking nut of a four-groove turbine bearing

Abstract

The utility model discloses a kind of special wrenches for dismounting and assembling of four-groove locking and fastening nut of turbine bearing, belong to wrench technical field, including wrench body, the bottom of wrench body is uniformly fixedly connected with shell, the both sides inner wall of shell is fixedly connected with limit block, and limit block is about the midaxial line of shell symmetric distribution, the below of shell is provided with clamping block, connecting plate is set between limit block, the both ends of connecting plate are rotatably connected with shaft, shaft is fixedly connected with connecting block, the right side of connecting block bottom is fixedly connected with clamping block. The special wrench for dismounting and assembling of four-groove locking and fastening nut of turbine bearing, through the linkage structure of innovatively designed connecting block and clamping block, the geometric shape of clamping block and the slot outline of four-groove locking and fastening nut of turbine bearing package realize precision adaptation, clamping block can be accurately embedded in the four-groove structure of nut, form multidimensional limit clamping relationship, completely solve the problem of skidding caused by insufficient shape adaptability of general wrench.

Description

Technical Field

[0001] This utility model relates to the field of wrench technology, specifically a special wrench for disassembling and assembling a four-groove locking nut for turbine bearing housings. Background Technology

[0002] A turbine is a machine that converts the energy contained in a fluid working medium into mechanical work. Also known as a turbine, its working principle is based on fluid dynamics. High-speed flowing fluid impacts an impeller, causing it to rotate and converting the fluid's kinetic and pressure energy into mechanical energy. Turbines come in various types, commonly including steam turbines, gas turbines, and water turbines. In the energy sector, steam turbines are frequently used in thermal power plants, using steam to drive an impeller and generate electricity. Gas turbines play a crucial role in gas turbine power plants and aero engines, becoming an important component of modern power equipment due to their high efficiency and rapid start-up. In the chemical industry, turbines can drive compressors, fans, and other equipment, providing power support for chemical production processes. They are characterized by high power, high efficiency, and high speed, playing an indispensable role in the efficient operation and development of modern industry.

[0003] For example, patent CN113580054B discloses a wrench including a hexagonal sleeve and a handle mounted on the sleeve. Multiple triangular prisms are vertically slidably arranged inside the sleeve, with tight fit between the prisms and between the prisms and the sidewalls of the sleeve. A sliding plate is horizontally mounted on the top of each prism, and a compression spring is positioned between the sliding plate and the top wall of the sleeve. However, when using this existing device, due to the special four-groove structure of the nut, a general-purpose wrench cannot precisely match the nut's grooves, easily causing the wrench to slip. This not only reduces disassembly and assembly efficiency but may also damage the nut's grooves, affecting its tightening performance. Furthermore, the force transmission of a general-purpose wrench is uneven during application, making it difficult to guarantee the accuracy of nut disassembly and assembly, increasing the workload for maintenance personnel and the cost of equipment maintenance.

[0004] Therefore, in order to solve such problems, we have proposed a special wrench for disassembling and assembling the four-groove locking nut of the turbine bearing package. Utility Model Content

[0005] The purpose of this utility model is to provide a special wrench for disassembling and assembling the four-groove locking nut of a turbine bearing, in order to solve the problems mentioned in the background art. When using the existing device, due to the special four-groove structure of the nut, the general wrench cannot be accurately matched with the groove of the nut, which easily leads to the wrench slipping. This not only reduces the disassembly and assembly efficiency, but may also damage the nut groove and affect the tightening performance of the nut. In addition, the general wrench does not transmit force evenly during the application of force, making it difficult to ensure the accuracy of nut disassembly and assembly, which increases the difficulty of maintenance personnel and the cost of equipment maintenance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a special wrench for disassembling and assembling four-groove locking nuts for turbine bearings, comprising a wrench body, a housing uniformly fixedly connected to the bottom of the wrench body, limit blocks fixedly connected to the inner walls on both sides of the housing, and the limit blocks being symmetrically distributed about the central axis of the housing, a locking block provided at the bottom of the housing, a connecting plate provided between the limit blocks, a rotating shaft rotatably connected to both ends of the connecting plate, a connecting block fixedly connected to the rotating shaft, and a locking block fixedly connected to the right side of the bottom of the connecting block.

[0007] Furthermore, positioning holes are provided at the four feet of the bottom of the housing, and guide posts are movably connected in the positioning holes. The bottom of the guide posts is fixedly connected to the top of the locking block.

[0008] Furthermore, guide members are fixedly connected to both sides of the top of the inner wall of the housing, and the guide members are symmetrically distributed about the central axis of the housing.

[0009] Furthermore, each of the limiting blocks has a first engaging hole on its top, and each of the two grooves on the top of the connecting plate has a second engaging hole.

[0010] Furthermore, a spring is fixedly connected to the middle of the bottom surface of the connecting block, and the lower part of the spring is fixedly connected to the inner wall of the two grooves on the top of the connecting plate.

[0011] Furthermore, magnets are fixedly connected inside both the first and second engaging holes, the engaging block is made of magnetic material, and the magnets are magnetically connected to the engaging block.

[0012] Furthermore, a rotating shaft is fixedly connected to the middle of the top surface of the wrench body, and the top of the rotating shaft is fixedly connected to the output end of the driving element.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the special wrench for disassembling and assembling the four-groove locking nut of the turbine bearing adopts a novel structural design, the specific details of which are as follows:

[0014] (1) This special wrench for disassembling and assembling the four-groove locking nut of the turbine bearing package has an innovative design of a linkage structure between the connecting block and the locking block. The geometry of the locking block is precisely matched with the groove contour of the four-groove locking nut of the turbine bearing package. In actual operation, the locking block can be accurately embedded in the four-groove structure of the nut to form a multi-dimensional limiting and locking relationship, which completely solves the slippage problem caused by the insufficient shape adaptability of the general wrench.

[0015] (2) This turbine bearing package four-slot locking nut disassembly and assembly wrench utilizes a magnetic coupling locking structure formed by strong magnets and magnetic locking blocks built into the first and second locking holes. Combined with the elastic buffering mechanism of a spring, a dual-effect limiting and fixing system is constructed. When the locking block is embedded in the nut slot, the attraction force generated by the magnet can counteract the lateral displacement tendency, while the spring absorbs the impact load during the force application process through compression deformation. Compared with traditional wrenches, this significantly improves disassembly and assembly accuracy. It effectively solves the problems of low disassembly and assembly efficiency and high maintenance costs caused by uneven force transmission of traditional tools.

[0016] Furthermore, the bottom of the housing has four evenly distributed positioning holes that form a clearance fit with the guide post. The lower end of the guide post and the top surface of the locking block are integrally milled to ensure vertical movement accuracy. Through the vertical limit of the positioning holes and the guide post, and the horizontal constraint of the guide component and the connecting plate, a three-dimensional motion guiding system is constructed, which makes the positional deviation of the locking block when it is embedded in the nut slot smaller. In actual operation, it can achieve quick alignment and positioning with one hand. With a smooth sliding feel, compared with traditional wrenches without a guide structure, the operation time is shortened, and the convenience of operation and structural stability are significantly improved. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0019] Figure 3 This is a three-dimensional schematic diagram of the mounting components of this utility model;

[0020] Figure 4 This is a three-dimensional cross-sectional view of the shell of this utility model;

[0021] Figure 5 Explosion diagram of the mounting component of this utility model Figure 1 ;

[0022] Figure 6 Explosion diagram of the mounting component of this utility model Figure 2 .

[0023] In the diagram: 1. Wrench body; 11. Rotating shaft; 12. Housing; 121. Positioning hole; 122. Guide component; 13. Limiting block; 131. First engaging hole; 2. Guide post; 21. Locking block; 22. Connecting plate; 221. Second engaging hole; 23. Rotating shaft; 24. Connecting block; 241. Engaging block; 25. Spring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides the following technical solution: a special wrench for disassembling and assembling the four-groove locking nut of a turbine bearing.

[0026] Example 1: A special wrench for disassembling and assembling a four-slot locking nut for a turbine bearing. Through components such as a connecting block 24 and a locking block 241, the locking block 21 is installed to prevent a general-purpose wrench from slipping due to inaccurate matching with the nut's slot. This not only reduces disassembly and assembly efficiency but may also damage the nut's slot, affecting its tightening performance. Figure 1 - Figure 5 As shown, a special wrench for disassembling and assembling four-groove locking nuts for turbine bearings includes a wrench body 1. A housing 12 is uniformly fixedly connected to the bottom of the wrench body 1. Limiting blocks 13 are fixedly connected to the inner walls on both sides of the housing 12, and the limiting blocks 13 are symmetrically distributed about the central axis of the housing 12. A locking block 21 is provided below the housing 12. A connecting plate 22 is provided between the limiting blocks 13. A rotating shaft 23 is rotatably connected to both ends of the connecting plate 22. A connecting block 24 is fixedly connected to the rotating shaft 23. A locking block 241 is fixedly connected to the right side of the bottom of the connecting block 24. A spring 25 is fixedly connected to the middle of the bottom surface of the connecting block 24. The lower part of the spring 25 is fixedly connected to the inner wall of the two grooves at the top of the connecting plate 22. Magnets are fixedly connected in the first locking hole 131 and the second locking hole 221. The locking block 241 is made of magnetic material, and the magnets are magnetically connected to the locking block 241.

[0027] Insert the locking block 21 into the positioning hole 121 at the bottom of the housing 12 via the guide post 2, so that the locking block 21 is located below the housing 12. At this time, the connecting plate 22 is located between the limiting blocks 13. The connecting block 24 is rotatably connected to the connecting plate 22 via the rotating shaft 23. The locking block 241 extends to the bottom of the housing 12 along with the connecting block 24. Align the wrench body 1 with the four-groove locking nut of the turbine bearing housing, so that the locking block 241 is aligned with the groove of the nut. Press down on the wrench body 1. During the pressing process, the guide post 2 slides in the positioning hole 121, and the locking block 21 moves accordingly, locking. Block 241 is embedded in the nut slot. At the same time, the connecting block 24 is squeezed by the nut and rotates around the rotating shaft 23, compressing the spring 25, so that the locking block 241 fits tightly against the nut slot. After the locking block 241 is embedded in the nut slot, the second locking hole 221 on the top of the connecting plate 22 aligns with the first locking hole 131 on the top of the limiting block 13. The magnets in the first locking hole 131 and the second locking hole 221 form a magnetic connection with the magnetic material of the locking block 241, limiting and fixing the locking block 241 and the locking block 21, ensuring that the device is stably connected to the nut during the application of force.

[0028] Example 2: Unlike Example 1, the locking block 21 is limited and fixed by components such as the first locking hole 131, the second locking hole 221, and the locking block 241. Figure 6 As shown, positioning holes 121 are provided at the four feet of the bottom of the housing 12. Guide posts 2 are movably connected in the positioning holes 121. The bottom of the guide posts 2 is fixedly connected to the top of the locking block 21. Guide members 122 are fixedly connected to the top two sides of the inner wall of the housing 12. The guide members 122 are symmetrically distributed about the central axis of the housing 12. The top of the limiting block 13 is provided with a first engaging hole 131. The two grooves on the top of the connecting plate 22 are provided with a second engaging hole 221. A rotating shaft 11 is fixedly connected to the middle of the top surface of the wrench body 1. The top of the rotating shaft 11 is fixedly connected to the output end of the driving element.

[0029] The rotating shaft 11 on the top surface of the wrench body 1 adopts a standard key connection structure and is rigidly connected to the output end of the drive element. When the drive element is started, the rotational speed of the rotating shaft 11 drives the wrench body 1 to rotate. Through the precise engagement of the locking block 241 with the nut groove, the rotational torque is evenly transmitted to the nut, achieving efficient disassembly and assembly.

[0030] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0031] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A special wrench for disassembling and assembling a four-groove locking nut for a turbine bearing, comprising a wrench body (1), characterized in that: The bottom of the wrench body (1) is uniformly fixedly connected to a housing (12). Limiting blocks (13) are fixedly connected to the inner walls on both sides of the housing (12), and the limiting blocks (13) are symmetrically distributed about the central axis of the housing (12). A locking block (21) is provided below the housing (12). A connecting plate (22) is provided between the limiting blocks (13). A rotating shaft (23) is rotatably connected to both ends of the connecting plate (22). A connecting block (24) is fixedly connected to the rotating shaft (23). A locking block (241) is fixedly connected to the right side of the bottom of the connecting block (24).

2. The special wrench for disassembling and assembling the four-groove locking nut of a turbine bearing as described in claim 1, characterized in that: The housing (12) has positioning holes (121) at its four corners. A guide post (2) is movably connected in the positioning hole (121). The bottom of the guide post (2) is fixedly connected to the top of the locking block (21).

3. The special wrench for disassembling and assembling the four-groove locking nut of a turbine bearing as described in claim 1, characterized in that: Guide members (122) are fixedly connected to both sides of the top of the inner wall of the housing (12), and the guide members (122) are symmetrically distributed about the central axis of the housing (12).

4. The special wrench for disassembling and assembling the four-groove locking nut of a turbine bearing as described in claim 1, characterized in that: The top of each limiting block (13) is provided with a first engaging hole (131), and the top two grooves of the connecting plate (22) are provided with a second engaging hole (221).

5. The special wrench for disassembling and assembling the four-groove locking nut of a turbine bearing as described in claim 1, characterized in that: A spring (25) is fixedly connected to the middle of the bottom surface of the connecting block (24), and the lower part of the spring (25) is fixedly connected to the inner wall of the two grooves on the top of the connecting plate (22).

6. The special wrench for disassembling and assembling the four-groove locking nut of a turbine bearing as described in claim 4, characterized in that: Magnets are fixedly connected in both the first engaging hole (131) and the second engaging hole (221). The engaging block (241) is made of magnetic material, and the magnets are magnetically connected to the engaging block (241).

7. The special wrench for disassembling and assembling the four-groove locking nut of a turbine bearing as described in claim 1, characterized in that: A rotating shaft (11) is fixedly connected to the middle of the top surface of the wrench body (1), and the top of the rotating shaft (11) is fixedly connected to the output end of the driving element.

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