Disassembling tool for dynamic sealing ring of helicopter rotor shaft

Abstract

The invention relates to the technical field of helicopters, in particular to a helicopter rotor shaft dynamic sealing ring dismounting tool which comprises a grip, the top of the grip is fixedly connected with a reinforcing mechanism, the top of the reinforcing mechanism is provided with a pulling hook, the grip comprises a chassis, and the bottom of the chassis is fixedly connected with a grip body. A hydraulic push rod connector is fixedly connected to the top of the chassis, connecting rods are fixedly connected to the four edges of the top of the chassis, the reinforcing mechanism comprises a hydraulic push-pull assembly, a reinforcing assembly is arranged at the top of the hydraulic push-pull assembly, the pulling hook comprises a hinged disc, and a grabbing and clamping assembly is arranged at the bottom of the hinged disc. According to the helicopter rotor shaft dynamic sealing ring dismounting device, the grip, the reinforcing mechanism and the pulling hook are arranged, rapid and safe dismounting of a helicopter rotor shaft dynamic sealing ring is achieved, the problems that in a traditional dismounting mode, operation is complex, efficiency is low, and the sealing ring is prone to being damaged are effectively solved, and the dismounting process becomes simple and visual through the innovative mechanical structure design.

Description

Technical Field

[0001] The present invention relates to the technical field of helicopters, and more particularly to a disassembly tool for a dynamic sealing ring of a helicopter rotor shaft. Background Art

[0002] The helicopter rotor shaft dynamic seal ring refers to a key component installed on the helicopter rotor shaft to prevent leakage of lubricating oil or gas between the shaft and the rotor. It is usually made of wear-resistant, high-temperature-resistant and high-pressure-resistant materials to ensure that it can maintain good sealing performance under high-speed rotation and extreme environments of the helicopter. The helicopter rotor shaft dynamic seal ring is precisely designed and has a complex structure. Its performance is directly related to the flight safety and stability of the helicopter. Therefore, when disassembling and replacing the helicopter rotor shaft dynamic seal ring, special disassembly tools are required to ensure the smooth disassembly process while avoiding damage to the helicopter rotor shaft and other components.

[0003] Patent document CN108662011A discloses a bearing structure, disassembly tool, and method for using the disassembly tool, all belonging to the field of bearings and related hardware tools. This invention addresses the problem of difficult-to-remove sealing rings in existing bearings. The bearing structure comprises an inner ring, an outer ring, a retaining frame, and steel balls. It also includes a sealing ring with a reinforcement plate disposed therein and a disassembly groove on its outer end face. It also includes a pull sleeve, the inner end of which passes through the sealing ring and is secured to the outer side of the reinforcement plate. The outer end of the pull sleeve is positioned within the disassembly groove, and the outer end of the pull sleeve is aligned with the groove opening. The pull sleeve wall within the disassembly groove is provided with a plurality of cylindrical locking holes, distributed circumferentially along the pull sleeve, with the axis of the locking holes radially disposed along the pull sleeve. The walls of the locking holes at both ends have a tapered structure. The bearing also includes a cylindrical locking bead that slides within the locking hole, with rounded ends and a length greater than the depth of the locking hole. The sealing ring on this bearing is stronger, and the disassembly tool can reduce the difficulty of removing the bearing sealing ring.

[0004] When disassembling the dynamic seal ring of the helicopter rotor shaft, since the dynamic seal ring and the cylindrical casing fit closely during the disassembly process, the thermal expansion and contraction method will cause the dynamic seal ring and the casing to act simultaneously, and the effect is not obvious. In the existing disassembly and assembly process, violent disassembly using tools can easily damage the parts and tools and take a long time. The hammering method during installation causes uneven friction between the outer end face of the dynamic seal ring and the inner wall of the cylindrical casing, which damages both the tools and the casing and the dynamic seal ring. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a disassembly tool for the dynamic sealing ring of a helicopter rotor shaft. The technical problem to be solved by the present invention is: since the dynamic sealing ring and the cylindrical casing fit closely during the disassembly process, the thermal expansion and contraction method will cause the dynamic sealing ring and the casing to act simultaneously, and the effect is not obvious. In the existing disassembly and assembly process, violent disassembly using tools can easily damage the machine parts and tools and take a long time. The hammering method during the installation process causes uneven friction between the outer end face of the dynamic sealing ring and the inner wall of the cylindrical casing, which damages both the tool and the casing and the dynamic sealing ring.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A tool for removing a dynamic seal ring of a helicopter rotor shaft comprises a handle, a top of the handle is fixedly connected to a reinforcement mechanism, and a top of the reinforcement mechanism is provided with a hook;

[0008] The handle comprises a chassis, the bottom of the chassis is fixedly connected to the handle body, the top of the chassis is fixedly connected to the hydraulic push rod joint, and the four sides of the top of the chassis are fixedly connected to connecting rods;

[0009] The reinforcement mechanism includes a hydraulic push-pull assembly, and a reinforcement assembly is provided on the top of the hydraulic push-pull assembly;

[0010] The pulling hook comprises a hinged plate, and a gripping assembly is provided at the bottom of the hinged plate.

[0011] As a further solution of the present invention: the hydraulic push-pull assembly includes a connecting plate, the four sides of the connecting plate are fixedly connected with L-shaped connecting rods, the inner bottom of the four L-shaped connecting rods are fixedly connected with hydraulic push rods, the top of the hydraulic push rod extends to the top of the outer wall of the connecting plate and is provided with a connecting groove, and the left and right sides of the top of the connecting plate are provided with sliding grooves.

[0012] As a further solution of the present invention: the reinforcement assembly includes a rectangular support plate, and the left and right sides of the bottom of the rectangular support plate are fixedly connected to support rods, the bottom ends of the two support rods are respectively fixedly connected to the two sides of the top of the connecting plate, and the middle parts of the left and right sides of the rectangular support plate are fixedly connected to guide vertical rods, the inner walls of the two guide vertical rods are hollowed out, the tops of the two guide vertical rods are fixedly connected to hinged top blocks, and the outer bottoms of the two guide vertical rods are fixedly connected to hinged blocks.

[0013] As a further solution of the present invention: the inner top of the two guide uprights is slidably connected with a rectangular lifting plate, the middle parts of the left and right sides of the rectangular lifting plate are fixedly connected with a rotating rod hinge block, the outer sides of the two rotating rod hinge blocks extend to the outer sides of the two guide uprights and the bottoms are rotatably connected with rotating rods, the bottoms of the two rotating rods are rotatably connected to the expansion blocks, the bottoms of the inner walls of the two expansion blocks are rotatably connected to the second rotating rods, the sides of the two second rotating rods away from the expansion blocks are rotatably connected to the inner walls of the two hinge blocks, and the inner wall of the rectangular lifting plate is fixedly connected to the side of the outer wall of the hydraulic push rod at the top of the connecting plate.

[0014] As a further solution of the present invention: the inner top of the two guide uprights is slidably connected with a rectangular lifting plate, the middle parts of the left and right sides of the rectangular lifting plate are fixedly connected with a rotating rod hinge block, the outer sides of the two rotating rod hinge blocks extend to the outer sides of the two guide uprights and the bottoms are rotatably connected with rotating rods, the bottoms of the two rotating rods are rotatably connected to the expansion blocks, the bottoms of the inner walls of the two expansion blocks are rotatably connected to the second rotating rods, the sides of the two second rotating rods away from the expansion blocks are rotatably connected to the inner walls of the two hinge blocks, and the inner wall of the rectangular lifting plate is fixedly connected to the side of the outer wall of the hydraulic push rod at the top of the connecting plate.

[0015] As a further solution of the present invention: the top annular array of the articulated disk is provided with an articulation groove extending to the bottom, the bottom annular array of the articulated disk is fixedly connected to a vertical plate, the bottoms of multiple vertical plates are fixedly connected to an outer ring, the inner sides of multiple outer rings are fixedly connected to a hook-pulling hydraulic push rod connecting rod, and the inner sides of multiple hook-pulling hydraulic push rod connecting rods are fixedly connected to a hook-pulling hydraulic push rod.

[0016] As a further solution of the present invention: the bottoms of the multiple hook-pulling hydraulic push rod connecting rods are fixedly connected with threaded connecting rods, the outer walls of the threaded connecting rods are threadedly connected to the inner walls of the connecting grooves opened at the tops of the hydraulic push rods, and the top annular arrays of the hook-pulling hydraulic push rods are fixedly connected with columnar pull rods.

[0017] As a further solution of the present invention: the gripping assembly includes a guide plate, the top of which is fixedly connected to the middle of the bottom of the hinge plate, the top annular array of the guide plate is provided with guide grooves extending to the bottom, and the outer wall of the guide plate is provided with through holes on one side aligned with the multiple guide grooves.

[0018] As a further solution of the present invention: the bottom annular array of the guide plate is fixedly connected to a columnar guide tube connecting rod, the inner bottom of multiple columnar guide tube connecting rods is fixedly connected to a columnar guide vertical rod, the middle of the bottom of the guide plate is fixedly connected to a columnar guide vertical rod, the middle of the outer wall of the columnar guide vertical rod is slidably connected to a lifting ring, the bottom annular array of the lifting ring is fixedly connected to the top of multiple columnar pull rods, the outer wall of the lifting ring is slidably connected to the inner wall of the columnar guide tube, and the top annular array of the lifting ring is rotatably connected to a two-way hinged rotating rod.

[0019] As a further solution of the present invention: the inner walls of the multiple guide grooves are slidably connected with columnar cross bar push-pull blocks, the bottoms of the multiple columnar cross bar push-pull blocks are rotatably connected to the side of the multiple bidirectional hinged rotating rods away from the lifting ring, the outer sides of the multiple columnar cross bar push-pull blocks are fixedly connected with columnar cross bars, the outer ends of the multiple columnar cross bars extend to the outer wall of the guide disk through multiple through holes and are rotatably connected with the grabbing plate hinge block, the outer sides of the multiple grabbing plate hinge blocks are fixedly connected with grabbing plates, the middle parts of the outer walls of the multiple grabbing plates are rotatably connected to the inner walls of the multiple hinge grooves opened in the hinge disk, and the tops of the multiple grabbing plates are fixedly connected with conical clamping blocks.

[0020] The beneficial effects of the present invention are:

[0021] The present invention realizes the rapid and safe disassembly of the helicopter rotor shaft dynamic sealing ring by providing a handle, a reinforcement mechanism and a pull hook, effectively solving the problems of complex operation, low efficiency and easy damage to the sealing ring in the traditional disassembly method. Through the innovative mechanical structure design, the disassembly process becomes simple and intuitive, which not only reduces the labor intensity of the staff, but also greatly improves the accuracy and reliability of the disassembly operation. At the same time, the disassembly tool also fully considers portability and practicality, ensuring that the best working effect can be exerted in various complex environments, and providing strong technical support for the daily maintenance and care of helicopters. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the main three-dimensional structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the main body three-dimensional separation structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the handle of the present invention;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the reinforcement mechanism of the present invention;

[0026] Figure 5 It is a schematic diagram of the three-dimensional separation structure of the reinforcement mechanism of the present invention;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the hydraulic pull rod assembly of the present invention;

[0028] Figure 7 This is a schematic diagram of the three-dimensional separation structure of the reinforcement component of the present invention;

[0029] Figure 8 This is a schematic diagram of the three-dimensional structure of the hook puller of the present invention;

[0030] Figure 9 This is a schematic diagram of the three-dimensional separation structure of the hook puller of the present invention;

[0031] Figure 10 It is a schematic diagram of the three-dimensional separation structure of the gripping assembly of the present invention.

[0032] In the figure: 1. handle; 11. chassis; 12. hydraulic push rod joint; 13. handle body; 14. connecting rod; 2. reinforcement mechanism; 21. hydraulic push-pull assembly; 211. connecting plate; 212. slide; 213. L-shaped connecting rod; 214. hydraulic push rod; 215. connecting groove; 22. reinforcement assembly; 221. rectangular support plate; 222. support rod; 223. guide vertical rod; 224. hinge block; 225. hinged top block; 226. rectangular lifting plate; 227. rotating rod hinge block; 228. rotating rod; 229. retracting and expanding block; 2210. second rotating rod; 2211. retracting and expanding vertical rod; 2212. retracting and expanding vertical rod slide; 2213. V-shaped rotating rod; 2214. Rotating short rod; 2215. Semicircular splint; 3. Hook extraction; 31. Articulated disc; 32. Articulated groove; 33. Vertical plate; 34. Outer collar; 35. Hook extraction hydraulic push rod connecting rod; 36. Hook extraction hydraulic push rod; 37. Columnar pull rod; 38. Grabbing clamp assembly; 381. Guide disc; 382. Guide groove; 383. Through hole; 384. Columnar cross bar push-pull block; 385. Columnar cross bar; 386. Grabbing splint hinge block; 387. Grabbing splint; 388. Conical clamping block; 389. Columnar guide tube connecting rod; 3810. Columnar guide tube; 3811. Bidirectional articulated rotating rod; 3812. Lifting collar; 3813. Columnar guide vertical rod; 39. Threaded connecting rod. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] like Figure 1-2As shown, the present invention provides a disassembly tool for a helicopter rotor shaft dynamic seal ring, comprising a handle 1, a reinforcement mechanism 2 fixedly connected to the top of the handle 1, and a pull hook 3 provided on the top of the reinforcement mechanism 2.

[0035] like Figure 3-10As shown, the handle 1 includes a chassis 11, the bottom of the chassis 11 is fixedly connected to the handle body 13, the top of the chassis 11 is fixedly connected to the hydraulic push rod joint 12, the four sides of the top of the chassis 11 are fixedly connected to the connecting rod 14, the reinforcement mechanism 2 includes a hydraulic push-pull component 21, the top of the hydraulic push-pull component 21 is provided with a reinforcement component 22, the hydraulic push-pull component 21 includes a connecting disk 211, the four sides of the connecting disk 211 are fixedly connected to the L-shaped connecting rod 213, the inner bottom of the four L-shaped connecting rods 213 is fixedly connected to the hydraulic push rod 214, the top of the hydraulic push rod 214 extends to the top of the outer wall of the connecting disk 211 and is provided with a connecting groove 215, the left and right sides of the top of the connecting disk 211 are provided with a slide groove 212, the reinforcement component 22 includes a rectangular The rectangular support plate 221 is fixedly connected to the left and right sides of the bottom of the rectangular support plate 221 with support rods 222. The bottom ends of the two support rods 222 are fixedly connected to the two sides of the top of the connecting plate 211 respectively. The middle parts of the left and right sides of the rectangular support plate 221 are fixedly connected with guide rods 223. The inner walls of the two guide rods 223 are hollowed out. The tops of the two guide rods 223 are fixedly connected with hinged top blocks 225. The outer bottoms of the two guide rods 223 are fixedly connected with hinge blocks 224. The inner tops of the two guide rods 223 are slidably connected with rectangular lifting plates 226. The middle parts of the left and right sides of the rectangular lifting plates 226 are fixedly connected with rotating rod hinge blocks 227. The outer sides of the two rotating rod hinge blocks 227 extend to the two guide rods. The outer side and bottom of 223 are rotatably connected with a rotating rod 228, the bottoms of the two rotating rods 228 are rotatably connected with the expansion block 229, the inner wall bottoms of the two expansion blocks 229 are rotatably connected with the second rotating rod 2210, the two second rotating rods 2210 are rotatably connected to the inner walls of the two hinge blocks 224 on one side away from the expansion block 229, the inner wall of the rectangular lifting plate 226 is fixedly connected to the outer wall of the hydraulic push rod 214 on one side of the top of the connecting plate 211, the outer sides of the two expansion blocks 229 are slidably connected with the expansion vertical rod 2211, the bottoms of the two expansion vertical rods 2211 are fixedly connected with the expansion vertical rod slide 2212, the outer wall bottoms of the two expansion vertical rod slides 2212 are slidably connected to the inner walls of the two slide grooves 212, and the two expansion blocks 229 are slidably connected to the inner walls of the two slide grooves 212. The top of the outer wall of the vertical rod 2211 is rotatably connected to two V-shaped rotating rods 2213, and the left and right groups of V-shaped rotating rods 2213 are fixedly connected to a rotating short rod 2214 on one side close to the guide vertical rod 223. One side of the left and right groups of rotating short rods 2214 are rotatably connected to the outer wall of the two hinged top blocks 225. The top of the inner side of the left and right groups of V-shaped rotating rods 2213 are rotatably connected to a semicircular splint 2215, and the bottom of the two semicircular splints 2215 are slidably connected to the top of the two hinged top blocks 225. The hook 3 includes a hinge disk 31, and a gripping assembly 38 is provided at the bottom of the hinge disk 31. The top annular array of the hinge disk 31 is provided with a hinge groove 32 that runs through to the bottom, and the bottom annular array of the hinge disk 31 is fixedly connected to the vertical plate 33.The bottoms of the plurality of vertical plates 33 are fixedly connected with outer collars 34, the inner sides of the plurality of outer collars 34 are fixedly connected with hook-pulling hydraulic push rod connecting rods 35, the inner sides of the plurality of hook-pulling hydraulic push rod connecting rods 35 are fixedly connected with hook-pulling hydraulic push rods 36, the bottoms of the plurality of hook-pulling hydraulic push rod connecting rods 35 are fixedly connected with threaded connecting rods 39, the outer wall of the threaded connecting rods 39 is threadedly connected to the inner wall of the connecting groove 215 opened at the top of the hydraulic push rod 214, the top annular array of the hook-pulling hydraulic push rods 36 is fixedly connected with a columnar pull rod 37, and the clamping assembly 38 includes a guide plate 38 1. The top of the guide plate 381 is fixedly connected to the middle of the bottom of the hinge plate 31. The top annular array of the guide plate 381 is provided with a guide groove 382 extending to the bottom. The outer wall of the guide plate 381 is provided with a through hole 383 on one side aligned with the multiple guide grooves 382. The bottom annular array of the guide plate 381 is fixedly connected to a columnar guide tube connecting rod 389. The inner bottom of the multiple columnar guide tube connecting rods 389 is fixedly connected to a columnar guide tube 3810. The middle of the bottom of the guide plate 381 is fixedly connected to a columnar guide vertical rod 3813. The middle part of the outer wall of the guide vertical rod 3813 is slidably connected with a lifting ring 3812, and the bottom annular array of the lifting ring 3812 is fixedly connected to the top of multiple columnar pull rods 37. The outer wall of the lifting ring 3812 is slidably connected to the inner wall of the columnar guide tube 3810. The top annular array of the lifting ring 3812 is rotatably connected with a two-way hinged rotating rod 3811. The inner walls of multiple guide grooves 382 are all slidably connected with columnar cross bar push-pull blocks 384. The bottoms of multiple columnar cross bar push-pull blocks 384 are rotatably connected to multiple two-way hinged rotating rods 3811 away from the lifting rods. On one side of the lowering ring 3812, the outer sides of the multiple columnar cross bar push-pull blocks 384 are fixedly connected to columnar cross bars 385, the outer ends of the multiple columnar cross bars 385 extend to the outer wall of the guide plate 381 through multiple through holes 383 and are rotatably connected to the grabbing plate hinge blocks 386, the outer sides of the multiple grabbing plate hinge blocks 386 are fixedly connected to grabbing plates 387, the middle parts of the outer walls of the multiple grabbing plates 387 are rotatably connected to the inner walls of the multiple hinge grooves 32 opened in the hinge plate 31, and the tops of the multiple grabbing plates 387 are fixedly connected to the conical clamping blocks 388;

[0036] When it is necessary to disassemble the shaft dynamic seal ring installed on the helicopter rotor, first insert the conical block 388 on the top of the multiple grabbing plates 387 into the gap of the shaft dynamic seal ring, and then start the hook extraction hydraulic push rod 36 to make the columnar pull rod 37 drive the lifting collar 3812 to slide upward in the columnar guide tube 3810, and the lifting collar 3812 pushes the columnar cross bar push-pull block 384 to slide in the guide groove 382 through the two-way hinged rotating rod 3811, thereby driving the columnar cross bar 385 to move outward, so that the grabbing plates 387 are connected to the hinge plate 31 through the grabbing plate hinge block 386. The hook 3 is threadedly connected to the hydraulic push-pull assembly 21 by aligning the connecting groove 215 opened at the top of the hydraulic push rod 214 with the threaded connecting rod 39, and the hook 3 is threadedly connected to the hydraulic push-pull assembly 21. The hydraulic push rod 214 is started. After the hydraulic push rod 214 is started, the hook 3 is pulled to one side of the connecting disk 211 as a whole to pull the sealing ring out of the bearing by a certain distance. At the same time, the rectangular lifting plate 226 moves downward under the pull of the hydraulic push rod 214. During the movement, the rectangular lifting plate 226 drives the retracting plate 226 to move by the rotating rod hinge block 227 and the rotating rod 228. The expansion block 229 moves outward under the action of the second rotating rod 2210. During the movement, the expansion block 229 drives the expansion vertical rod slide bar 2212 to slide in the slide groove 212 through the expansion vertical rod 2211. At the same time, during the movement of the expansion block 229 outward, the interaction between the V-shaped rotating rod 2213 and the rotating short rod 2214 enables the semicircular clamping plate 2215 to further clamp and fix the pulled-out part of the sealing ring and the extraction hook 3, ensuring that the axial dynamic sealing ring will not slip or be damaged during the disassembly process. As the hydraulic push rod 214 continues to pull, the grabbing clamping plate 387 and The conical clamping block 388 tightly fixes the axial dynamic sealing ring. Afterwards, since the sealing ring has been pulled out of the bearing for a certain distance, the staff can use the handle body 13 to pull out the entire disassembly tool together with the axial dynamic sealing ring to complete the disassembly work. The design of the disassembly tool not only improves the disassembly efficiency, but also ensures the safety during the disassembly process, avoids damage to the axial dynamic sealing ring, and provides great convenience for helicopter maintenance work. In addition, the disassembly tool has a compact structure, is easy to operate, and is easy to carry and store. It is one of the indispensable tools in helicopter maintenance work.

[0037] The working principle of the present invention is as follows: the conical block 388 on the top of the plurality of grabbing splints 387 is inserted into the gap of the shaft dynamic sealing ring, and then the hydraulic push rod 36 is activated to pull the hook, so that the columnar pull rod 37 drives the lifting ring 3812 to slide upward in the columnar guide tube 3810, and the lifting ring 3812 pushes the columnar cross bar push-pull block 384 to slide in the guide groove 382 through the two-way hinged rotating rod 3811, thereby driving the columnar cross bar 385 to move outward, so that the grabbing splint 387 is pulled outward. 87 rotates the hinge block 386 of the clamping plate in the hinge groove 32 of the hinge plate 31 to clamp the shaft dynamic seal ring. After clamping, the connecting groove 215 opened at the top of the hydraulic push rod 214 is aligned with the threaded connecting rod 39 to thread the hook 3 to the hydraulic push-pull assembly 21. The hydraulic push rod 214 is started. After the hydraulic push rod 214 is started, the hook 3 is pulled to one side of the connecting plate 211 to pull the seal ring out of the bearing for a certain distance. At the same time, the rectangular The lifting plate 226 moves downward under the pull of the hydraulic push rod 214. During the movement, the rectangular lifting plate 226 drives the expansion block 229 to move outward under the action of the second rotation rod 2210 through the rotating rod hinge block 227 and the rotating rod 228. During the movement, the expansion block 229 drives the expansion vertical rod slide 2212 to slide in the slide groove 212 through the expansion vertical rod 2211. At the same time, during the movement of the expansion block 229 to the outside, the interaction between the V-shaped rotating rod 2213 and the rotating short rod 2214 makes the semicircular splint 2215 further clamp and fix the pulled-out part of the sealing ring and the extraction hook 3. As the hydraulic push rod 214 continues to pull, the grabbing splint 387 and the conical clamping block 388 tightly fix the shaft dynamic sealing ring. Afterwards, since the sealing ring has been pulled out of the bearing for a certain distance, the staff can use the handle body 13 to pull out the entire disassembly tool together with the shaft dynamic sealing ring.

[0038] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A tool for removing a helicopter rotor shaft dynamic seal ring, characterized by: It comprises a handle (1), the top of the handle (1) is fixedly connected to a reinforcement mechanism (2), and the top of the reinforcement mechanism (2) is provided with a pull hook (3); The handle (1) comprises a chassis (11), the bottom of the chassis (11) is fixedly connected to a handle body (13), the top of the chassis (11) is fixedly connected to a hydraulic push rod joint (12), and the four sides of the top of the chassis (11) are fixedly connected to connecting rods (14); The reinforcement mechanism (2) comprises a hydraulic push-pull assembly (21), and a reinforcement assembly (22) is provided on the top of the hydraulic push-pull assembly (21); The extraction hook (3) comprises a hinged disc (31), and a gripping assembly (38) is provided at the bottom of the hinged disc (31).

2. A removal tool for a helicopter rotor shaft dynamic seal ring according to claim 1, characterized in that: The hydraulic push-pull assembly (21) comprises a connecting plate (211), the four sides of the connecting plate (211) are fixedly connected with L-shaped connecting rods (213), the inner bottoms of the four L-shaped connecting rods (213) are fixedly connected with hydraulic push rods (214), the top ends of the hydraulic push rods (214) extend to the top of the outer wall of the connecting plate (211) and are provided with connecting grooves (215), and the left and right sides of the top of the connecting plate (211) are both provided with sliding grooves (212).

3. The removal tool for a helicopter rotor shaft dynamic seal ring according to claim 1, characterized in that: The reinforcement assembly (22) comprises a rectangular support plate (221), the left and right sides of the bottom of the rectangular support plate (221) are fixedly connected to support rods (222), the bottom ends of the two support rods (222) are respectively fixedly connected to the two sides of the top of the connection plate (211), the middle parts of the left and right sides of the rectangular support plate (221) are fixedly connected to guide vertical rods (223), the inner walls of the two guide vertical rods (223) are hollowed out, the tops of the two guide vertical rods (223) are fixedly connected to hinged top blocks (225), and the outer bottoms of the two guide vertical rods (223) are fixedly connected to hinged blocks (224).

4. A helicopter rotor shaft dynamic seal disassembly tool according to claim 3, characterized in that: The inner tops of the two guide uprights (223) are slidably connected to a rectangular lifting plate (226), and the middle parts of the left and right sides of the rectangular lifting plate (226) are fixedly connected to a rotating rod hinge block (227). The outer sides of the two rotating rod hinge blocks (227) extend to the outer sides of the two guide uprights (223) and are rotatably connected to the rotating rods (228) at the bottom. The bottoms of the two rotating rods (228) are rotatably connected to the expansion block (229). The bottoms of the inner walls of the two expansion blocks (229) are rotatably connected to the second rotating rods (2210). The sides of the two second rotating rods (2210) away from the expansion block (229) are rotatably connected to the inner walls of the two hinge blocks (224). The inner wall of the rectangular lifting plate (226) is fixedly connected to the outer wall of the hydraulic push rod (214) on one side of the top of the connecting plate (211).

5. A removal tool for a helicopter rotor shaft dynamic seal ring according to claim 4, characterized in that: The outer sides of the two expansion blocks (229) are slidably connected to the expansion rods (2211), the bottoms of the two expansion rods (2211) are fixedly connected to the expansion rod slides (2212), the bottoms of the outer walls of the two expansion rod slides (2212) are slidably connected to the inner walls of the two slide grooves (212), and the tops of the outer walls of the two expansion rods (2211) are rotatably connected to two V-shaped rotating rods (2213), and the left and right groups of the V-shaped rotating rods are connected to the expansion rods (2213). The rod (2213) is fixedly connected to a rotating short rod (2214) on one side close to the guide vertical rod (223), and one side of the left and right groups of rotating short rods (2214) is rotatably connected to the outer wall of the two hinged top blocks (225). The top of the inner side of the left and right groups of V-shaped rotating rods (2213) is rotatably connected to a semicircular splint (2215), and the bottom of the two semicircular splints (2215) is slidably connected to the top of the two hinged top blocks (225).

6. The helicopter rotor shaft dynamic seal disassembly tool according to claim 1, characterized in that: The top annular array of the hinge plate (31) is provided with an articulation groove (32) extending to the bottom, the bottom annular array of the hinge plate (31) is fixedly connected to a vertical plate (33), the bottoms of the plurality of vertical plates (33) are fixedly connected to an outer ring (34), the inner sides of the plurality of outer rings (34) are fixedly connected to a hook pulling hydraulic push rod connecting rod (35), and the inner sides of the plurality of hook pulling hydraulic push rod connecting rods (35) are fixedly connected to a hook pulling hydraulic push rod (36).

7. A helicopter rotor shaft dynamic seal disassembly tool according to claim 6, characterized in that: The bottoms of the plurality of hook-pulling hydraulic push rod connecting rods (35) are fixedly connected with threaded connecting rods (39), the outer walls of the threaded connecting rods (39) are threadedly connected to the inner walls of the connecting grooves (215) opened at the tops of the hydraulic push rods (214), and the top annular array of the hook-pulling hydraulic push rods (36) is fixedly connected with columnar pull rods (37).

8. The helicopter rotor shaft dynamic seal disassembly tool according to claim 1, characterized in that: The gripping assembly (38) includes a guide plate (381), the top of which is fixedly connected to the middle of the bottom of the hinge plate (31), and a circular array of guide grooves (382) extending from the top of the guide plate (381) is provided, and a through hole (383) is provided on the side of the outer wall of the guide plate (381) aligned with the plurality of guide grooves (382).

9. A helicopter rotor shaft dynamic seal disassembly tool according to claim 8, characterized in that: The bottom annular array of the guide plate (381) is fixedly connected to a columnar guide tube connecting rod (389), and the inner bottom of multiple columnar guide tube connecting rods (389) is fixedly connected to a columnar guide tube (3810). The middle of the bottom of the guide plate (381) is fixedly connected to a columnar guide vertical rod (3813), and the middle of the outer wall of the columnar guide vertical rod (3813) is slidably connected to a lifting ring (3812). The bottom annular array of the lifting ring (3812) is fixedly connected to the top of multiple columnar pull rods (37), and the outer wall of the lifting ring (3812) is slidably connected to the inner wall of the columnar guide tube (3810). The top annular array of the lifting ring (3812) is rotatably connected to a two-way hinged rotating rod (3811).

10. The helicopter rotor shaft dynamic seal disassembly tool according to claim 8, characterized in that: The inner walls of the plurality of guide grooves (382) are all slidably connected to columnar cross bar push-pull blocks (384), the bottoms of the plurality of columnar cross bar push-pull blocks (384) are rotatably connected to the side of the plurality of bidirectional hinged rotating rods (3811) away from the lifting ring (3812), the outer sides of the plurality of columnar cross bar push-pull blocks (384) are all fixedly connected to columnar cross bars (385), and the outer ends of the plurality of columnar cross bars (385) are all through a plurality of through holes ( 383) extends to the outer wall of the guide plate (381) and is rotatably connected to a grabbing plate hinge block (386), and the outer sides of the plurality of grabbing plate hinge blocks (386) are fixedly connected to a grabbing plate (387), and the middle parts of the outer walls of the plurality of grabbing plates (387) are rotatably connected to the inner walls of the plurality of hinge grooves (32) opened on the hinge plate (31), and the tops of the plurality of grabbing plates (387) are fixedly connected to a conical clamping block (388).

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