Mounting structure of helicopter rotor shaft dynamic sealing ring dismounting tool

Abstract

The utility model discloses a mounting structure of a helicopter rotor shaft dynamic sealing ring dismounting tool, which comprises a base, a dismounting head is arranged at the top of the base, the dismounting head comprises a push-and-pull disc, vertical rods are fixedly connected to the top of the push-and-pull disc in an annular array, a top disc is fixedly connected to the tops of the vertical rods, and the top disc is fixedly connected to the top of the push-and-pull disc. Hinge grooves penetrating to the bottom are formed in the top of the top disc in an annular array mode, hydraulic push rod sleeve connecting rods are fixedly connected to the bottoms of the inner sides of the multiple vertical rods, hydraulic push rod sleeves are fixedly connected to the inner sides of the multiple hydraulic push rod sleeve connecting rods, and second hydraulic push rods are fixedly connected to the inner walls of the hydraulic push rod sleeves. Through the arrangement of the dismounting head, the dismounting process of the sealing ring and the rotor shaft is simplified through the design of the dismounting tool, the dismounting efficiency and safety are remarkably improved, through accurate control of a hydraulic system, it is ensured that dismounting force is evenly applied, and the problem that the sealing ring is damaged or is not thoroughly dismounted due to the fact that the force is too large or too small is solved.

Description

Technical Field

[0001] This utility model relates to the field of helicopter technology, specifically to an installation structure for a helicopter rotor shaft moving seal ring disassembly tool. Background Technology

[0002] A helicopter rotor shaft dynamic seal is a critical component used on the helicopter rotor shaft to provide a seal. It is typically made of highly elastic, wear-resistant materials such as rubber, polyurethane, or special synthetic materials to ensure effective sealing of the gap between the rotor shaft and the bushing or bearing during helicopter operation, preventing lubricant leakage or the intrusion of external impurities. The design of the helicopter rotor shaft dynamic seal must take into account factors such as centrifugal force, temperature changes, and vibration generated during high-speed rotor shaft rotation to ensure long-term stable operation and guarantee the helicopter's flight safety and performance.

[0003] According to patent document CN219666466U, a sealing ring assembly / disassembly tool is disclosed. This tool includes: an mounting cylinder, sleeved on the upper end of the drive shaft of a vacuum mixer, with its lower end abutting against the sealing ring; a rotating component, rotatably disposed on the upper end of the mounting cylinder, which is axially positioned within the mounting cylinder; a rotating rod, rotatably passing through the mounting cylinder and threadedly connected to a threaded hole, with its upper end located outside the mounting cylinder; and a disassembly assembly, including a disassembly plate and a connecting block. The disassembly plate is movably disposed on the lower end of the mounting cylinder and has a sealing ring engaging portion. The connecting block is detachably connected to the lower end of the rotating rod, allowing the lower end of the rotating rod to be threadedly connected to the drive shaft when the connecting block is removed. This technical solution solves the problem in related technologies where the lack of a dedicated tool for installing or removing sealing rings leads to difficulties in assembly / disassembly.

[0004] During the maintenance of the rotor shaft dynamic seal ring of a helicopter, when it is necessary to separate the seal ring from the bearing, a problem often arises. Due to the very tight fit between the seal ring and the cylindrical casing, the disassembly process becomes extremely difficult. This tight fit not only increases the difficulty of disassembly but also easily leads to damage to the parts and tools, and also consumes more time to complete the operation. Utility Model Content

[0005] The purpose of this utility model is to provide an installation structure for a helicopter rotor shaft dynamic seal ring disassembly tool, so as to solve the problems of difficult disassembly, easy damage to parts and tools, and long time consumption mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an installation structure for a helicopter rotor shaft moving seal ring disassembly tool, including a base, wherein a disassembly head is provided on the top of the base;

[0007] The disassembly head includes a push-pull plate, and the top of the push-pull plate is fixedly connected to a vertical pole in an annular array. The top of the multiple vertical poles is fixedly connected to a top plate, and the top of the top annular array of the top plate has a hinge groove that extends through to the bottom.

[0008] Preferably, a hydraulic push rod sleeve connecting rod is fixedly connected to the inner bottom of each of the plurality of uprights, a hydraulic push rod sleeve is fixedly connected to the inner side of the plurality of hydraulic push rod sleeve connecting rods, a second hydraulic push rod is fixedly connected to the inner wall of the hydraulic push rod sleeve, and a columnar upright is fixedly connected to the top of the second hydraulic push rod in a circular array.

[0009] Preferably, a guide plate is fixedly connected to the bottom center of the top plate, and a guide groove extending through to the bottom is formed in a circular array at the top of the guide plate. A through hole is formed on the side of the outer wall of the guide groove that is aligned with the multiple guide grooves. A shrinking and expanding block is slidably connected to the inner wall of the multiple guide grooves. A columnar shrinking and expanding rod is fixedly connected to the outer side of the multiple shrinking and expanding blocks. The outer ends of the multiple columnar shrinking and expanding rods extend to the outer wall of the guide plate through multiple through holes and are rotatably connected to a clamping plate. The middle of the outer wall of the multiple clamping plates is rotatably connected to the inner wall of the multiple hinged grooves formed in the top plate.

[0010] Preferably, the bottom of the guide plate is fixedly connected to a top plate support rod in a circular array, and the bottom of the plurality of top plate support rods is fixedly connected to the top of the hydraulic push rod sleeve.

[0011] Preferably, a guide rod is fixedly connected to the bottom center of the guide plate, a collar is slidably connected to the outer wall center of the guide rod, and a bidirectional hinged rotating rod is rotatably connected to the top of the collar in a circular array. The sides of the multiple bidirectional hinged rotating rods away from the collar are rotatably connected to the bottom of the expansion block, and the bottom of the collar is fixedly connected to the top of the multiple columnar uprights.

[0012] Preferably, the base includes a base plate, with inclined connecting rods fixedly connected to the top four sides of the base plate. Connecting plates are fixedly connected to the top of the inner walls of the left and right sets of inclined connecting rods. Hydraulic push rods are fixedly connected to the inner walls of the connecting plates. Guide side plates are fixedly connected to the left and right sides of the top of the connecting plates. A second connecting plate is fixedly connected to the middle of the outer sides of the two guide side plates. Threaded push rods are threadedly connected to the inner walls of the left and right sides of the connecting plates and the second connecting plates. The top of the inner sides of the two guide side plates are slidably connected to the inner sides of the two guide side plates. The top of the hydraulic push rod is fixedly connected to the bottom of the push-pull plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By incorporating a disassembly head, this disassembly tool not only simplifies the disassembly process of the seal ring and rotor shaft but also significantly improves disassembly efficiency and safety. Precise control of the hydraulic system ensures even application of disassembly force, preventing damage to the seal ring or incomplete disassembly due to excessive or insufficient force. Furthermore, all components of this disassembly tool are made of high-strength, wear-resistant materials, guaranteeing its stability and durability during long-term use. Therefore, this disassembly tool has broad application prospects in helicopter maintenance, effectively reducing maintenance costs and improving maintenance efficiency.

[0015] 2. By incorporating a disassembly head and a base, this helicopter rotor shaft dynamic seal removal tool not only simplifies the disassembly process but also significantly enhances operational safety. The ingenious combination of the disassembly head and threaded push rod ensures that the seal can be firmly clamped and gradually detached from the rotor shaft, while the application of the hydraulic push rod provides stable and powerful driving force, enabling the disassembly action to proceed smoothly. In addition, the guide side plate is another key innovation, effectively preventing the disassembly head from shifting during movement, thereby ensuring the accuracy of disassembly and the safety of operators. Overall, the installation structure of this disassembly tool balances practicality and efficiency, bringing improvements to the disassembly of helicopter rotor shaft dynamic seals. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main three-dimensional structure of the present utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional separation structure of the main body of this utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional separation structure of the head of this utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional separation structure of the guide plate of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the base of this utility model.

[0021] In the diagram: 1. Base; 11. Base plate; 12. Diagonal connecting rod; 13. Connecting plate; 14. Guide side plate; 15. Hydraulic push rod; 16. Second connecting plate; 17. Threaded push rod; 2. Disassembly head; 21. Push-pull plate; 22. Upright; 23. Hydraulic push rod sleeve connecting rod; 24. Hydraulic push rod sleeve; 25. Second hydraulic push rod; 26. Columnar upright; 27. Collar; 28. Two-way hinged rotating rod; 29. ​​Guide upright; 210. Guide plate; 211. Top plate; 212. Guide groove; 213. Through hole; 214. Top plate support rod; 215. Columnar expansion rod; 216. Expansion block; 217. Clamping plate; 218. Hinge groove. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1 - Figure 2 This utility model provides a technical solution: an installation structure for a helicopter rotor shaft dynamic seal ring disassembly tool, including a base 1, and a disassembly head 2 is provided on the top of the base 1.

[0024] Please see Figure 3-4The disassembly head 2 includes a push-pull plate 21. A series of uprights 22 are fixedly connected to the top of the push-pull plate 21 in a circular array. A top plate 211 is fixedly connected to the top of the multiple uprights 22. A hinged groove 218 extending to the bottom is formed in the top circular array of the top of the top plate 211. Hydraulic push rod sleeve connecting rods 23 are fixedly connected to the bottom inner sides of the multiple uprights 22. Hydraulic push rod sleeves 24 are fixedly connected to the inner sides of the multiple hydraulic push rod sleeve connecting rods 23. A second hydraulic push rod 25 is fixedly connected to the inner wall of the hydraulic push rod sleeve 24. A columnar upright 26 is fixedly connected to the top circular array of the second hydraulic push rod 25. A guide plate 210 is fixedly connected to the bottom center of the top plate 211. A guide groove 212 extending to the bottom is formed in the top circular array of the guide plate 210. A through hole 213 is formed on the outer wall of the guide groove 212 on the side aligned with the multiple guide grooves 212. Expanding blocks 216 are slidably connected to the inner walls of the multiple guide grooves 212. A columnar expansion rod 215 is fixedly connected to the outer side of a plurality of expansion blocks 216. The outer ends of the columnar expansion rods 215 extend to the outer wall of the guide plate 210 through a plurality of through holes 213 and are rotatably connected to a clamping plate 217. The middle of the outer wall of the clamping plate 217 is rotatably connected to the inner wall of a plurality of hinge slots 218 opened in the top plate 211. The bottom of the guide plate 210 is fixedly connected to a top plate support rod 214 in an annular array. The bottom of the top plate support rod 214 is fixedly connected to the top of the hydraulic push rod sleeve 24. The bottom of the guide plate 210 is fixedly connected to a guide rod 29 in the middle. The middle of the outer wall of the guide rod 29 is slidably connected to a collar 27. The top of the collar 27 is rotatably connected to a bidirectional hinged rotating rod 28 in an annular array. The side of the bidirectional hinged rotating rod 28 away from the collar 27 is rotatably connected to the bottom of the expansion block 216. The bottom of the collar 27 is fixedly connected to the top of a plurality of columnar rods 26.

[0025] When it is necessary to disassemble the sealing ring and the rotor shaft, first insert the sealing ring of the rotor shaft into the gap between the sealing ring and the rotor shaft through multiple clamping plates 217. Then, activate the second hydraulic push rod 25. The second hydraulic push rod 25 drives the columnar upright 26 to rise, and the columnar upright 26 drives the collar 27 to rise. The collar 27 drives the expansion block 216 to slide outward in the guide groove 212 through the bidirectional hinged rotating rod 28. The expansion block 216 drives the columnar expansion rod 215 to move outward, and the columnar expansion rod 215 drives the clamping plates 217 in the hinge groove. The inner wall of the clamping plate 217 is tightly fitted to the inner wall of the sealing ring by rotating the inner wall of the clamping plate 217. At this time, the second hydraulic push rod 25 continues to rise, and the clamping plate 217 exerts an outward squeezing force on the sealing ring, thereby pulling the sealing ring off the rotor shaft by a certain distance. During the disassembly process, the guide rod 29 guides and supports the collar 27, ensuring that the collar 27 can rise stably. At the same time, the hydraulic push rod sleeve 24 and the hydraulic push rod sleeve connecting rod 23 provide stable support for the second hydraulic push rod 25, making the disassembly process more stable and reliable.

[0026] Please see Figure 5 The base 1 includes a base plate 11. The top four sides of the base plate 11 are fixedly connected with inclined connecting rods 12. The top of the inner wall of the two sets of inclined connecting rods 12 is fixedly connected with a connecting plate 13. The inner wall of the connecting plate 13 is fixedly connected with a hydraulic push rod 15. The top left and right sides of the top of the connecting plate 13 are fixedly connected with guide side plates 14. The middle of the outer side of the two guide side plates 14 is fixedly connected with a second connecting plate 16. The inner walls of the left and right sides of the connecting plate 13 and the second connecting plate 16 are threadedly connected with threaded push rods 17. The top of the inner side of the two guide side plates 14 is slidably connected to the inner side of the two guide side plates 14. The top of the hydraulic push rod 15 is fixedly connected to the bottom of the push-pull plate 21.

[0027] After the disassembly head 2 is clamped onto the outer wall of the sealing ring, the rotor shaft is fixed to the top of the disassembly head 2. Then, the operator rotates the bottom of the two threaded push rods 17, causing their tops to move upwards until they are against the bottom of the rotor shaft. Next, the hydraulic push rod 15 is activated, causing the push-pull plate 21 to move downwards. Because the sealing ring is clamped and fixed by the disassembly head 2, and the rotor shaft is against the tops of the two threaded push rods 17, the push-pull plate 21 causes the disassembly head 2 to move downwards as a whole. The sealing ring is moved downwards until it is completely detached from the rotor shaft. During this process, the guide side plate 14 ensures the stable vertical movement of the disassembly head 2, preventing it from shifting and further improving the accuracy and safety of the disassembly. After the sealing ring is successfully disassembled, the operator can rotate the threaded push rod 17 in the opposite direction to move its top away from the bottom of the rotor shaft. Then, the hydraulic push rod 15 is used to lift the disassembly head 2 back to the initial position, ready for the next disassembly operation. The entire disassembly process is simple to operate, requires no complicated tools and equipment, greatly improves work efficiency, and reduces the difficulty of operation.

[0028] Working principle: When it is necessary to disassemble the sealing ring and the rotor shaft, firstly, the sealing ring of the rotor shaft is inserted into the gap between the sealing ring and the rotor shaft through multiple clamping plates 217. Then, the second hydraulic push rod 25 is activated. The second hydraulic push rod 25 drives the columnar upright 26 to rise. The columnar upright 26 drives the collar 27 to rise. The collar 27 drives the expansion block 216 to slide outward in the guide groove 212 through the bidirectional hinged rotating rod 28. The expansion block 216 drives the columnar expansion rod 215 to move outward. The columnar expansion rod 215 drives the clamping plate 217 to rotate in the hinge groove 218, so that the outer wall of the clamping plate 217 is tightly fitted with the inner wall of the sealing ring. At this time, as the second hydraulic push rod 25 continues to rise, the clamping plate 217 generates an outward squeezing force on the sealing ring, thereby pulling the sealing ring off the rotor shaft by a certain distance.

[0029] After the disassembly head 2 is clamped on the outer wall of the sealing ring, the rotor shaft is fixed to the top of the disassembly head 2. Then, the operator rotates the bottom of the two threaded push rods 17, causing the tops of the two threaded push rods 17 to move upwards until they are in contact with the bottom of the rotor shaft. Then, the hydraulic push rod 15 is activated, which drives the push-pull plate 21 to move downwards. Since the sealing ring is clamped and fixed by the disassembly head 2, and the rotor shaft is in contact with the tops of the two threaded push rods 17, the push-pull plate 21 drives the disassembly head 2 to move downwards, which in turn drives the sealing ring to move downwards until the sealing ring is completely detached from the rotor shaft.

[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. An installation structure for a helicopter rotor shaft moving seal ring disassembly tool, characterized in that: Includes a base (1), the top of which is provided with a detachable head (2); The disassembly head (2) includes a push-pull plate (21), and the top of the push-pull plate (21) is fixedly connected to a column (22) in an annular array. The top of the column (22) is fixedly connected to a top plate (211), and the top of the top plate (211) has a hinged groove (218) extending to the bottom in an annular array.

2. The installation structure of the helicopter rotor shaft moving seal ring disassembly tool according to claim 1, characterized in that: Hydraulic push rod sleeve connecting rods (23) are fixedly connected to the bottom inner side of each of the multiple uprights (22), and hydraulic push rod sleeves (24) are fixedly connected to the inner side of each of the multiple hydraulic push rod sleeve connecting rods (23). A second hydraulic push rod (25) is fixedly connected to the inner wall of the hydraulic push rod sleeve (24), and columnar uprights (26) are fixedly connected to the top of the second hydraulic push rod (25) in a ring array.

3. The mounting structure of a tool for removing a shaft seal ring of a helicopter rotor according to claim 1, wherein: A guide plate (210) is fixedly connected to the bottom center of the top plate (211). The top of the guide plate (210) has a ring array of guide grooves (212) extending to the bottom. The outer wall of the guide groove (212) is provided with through holes (213) on the side that is aligned with the multiple guide grooves (212). The inner walls of the multiple guide grooves (212) are slidably connected with expansion blocks (216). The outer sides of the multiple expansion blocks (216) are fixedly connected with columnar expansion rods (215). The outer ends of the multiple columnar expansion rods (215) extend to the outer wall of the guide plate (210) through multiple through holes (213) and are rotatably connected with clamping plates (217). The middle of the outer walls of the multiple clamping plates (217) are rotatably connected to the inner walls of the multiple hinged grooves (218) opened in the top plate (211).

4. The mounting structure of a tool for removing a shaft seal ring of a helicopter rotor according to claim 3, wherein: The bottom of the guide plate (210) is fixedly connected to the top plate support rods (214) in a ring array, and the bottom of the multiple top plate support rods (214) is fixedly connected to the top of the hydraulic push rod sleeve (24).

5. The mounting structure of a tool for removing a shaft seal ring of a helicopter rotor according to claim 4, wherein: A guide rod (29) is fixedly connected to the bottom center of the guide plate (210). A collar (27) is slidably connected to the outer wall center of the guide rod (29). A two-way hinged rotating rod (28) is rotatably connected to the top of the collar (27) in a ring array. The side of the multiple two-way hinged rotating rods (28) away from the collar (27) is rotatably connected to the bottom of the expansion block (216). The bottom of the collar (27) is fixedly connected to the top of multiple columnar rods (26).

6. The mounting structure of a tool for removing a shaft seal ring of a helicopter rotor according to claim 1, wherein: The base (1) includes a base plate (11). The top four sides of the base plate (11) are fixedly connected with inclined connecting rods (12). The top of the inner walls of the two sets of inclined connecting rods (12) are fixedly connected with connecting plates (13). The inner walls of the connecting plates (13) are fixedly connected with hydraulic push rods (15). The top left and right sides of the connecting plates (13) are fixedly connected with guide side plates (14). The outer middle of the two guide side plates (14) is fixedly connected with a second connecting plate (16). The inner walls of the connecting plates (13) and the second connecting plates (16) are threadedly connected with threaded push rods (17). The top of the inner sides of the two guide side plates (14) are slidably connected to the inner sides of the two guide side plates (14). The top of the hydraulic push rod (15) is fixedly connected to the bottom of the push-pull plate (21).

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