Wrench for disassembling and assembling propeller beta pipe

Abstract

The wrench comprises a wrench rod, the wrench rod is internally provided with a pull rod channel penetrating through the two ends of the wrench rod, and a handle rod is fixed to the outer wall, close to one end of the wrench rod, of the wrench rod; the pull rod penetrates through the pull rod channel, one end of the pull rod is provided with a threaded section used for being in threaded connection with one end of the inner pipe of the beta pipe, and the other end of the pull rod is a drawing end; and the abutting sleeve is arranged on the outer wall of the wrench rod in a sleeving mode, and one end of the abutting sleeve can abut against one end of the outer pipe of the beta pipe. According to the wrench, the dismounting and mounting efficiency of the beta pipe can be improved, namely, the wrench can be matched with threads at the head of the inner pipe to adjust the position of the inner pipe, it is ensured that workers smoothly assemble the inner pipe of the beta pipe, meanwhile, the inner pipe can be conveniently dismounted as needed, and operation convenience is improved.

Description

Technical Field

[0001] The invention relates to the technical field of aviation propellers, and more particularly to a wrench for disassembling and assembling a propeller beta tube. Background Art

[0002] The propeller pitch device controls the propeller to work at the optimal blade angle under various working conditions of the engine and the aircraft to achieve the best working efficiency of the propeller. For automatic variable pitch propellers, the blade angle is required to change with factors such as engine power, flight altitude, speed, attitude and ambient temperature to maintain a constant propeller speed. The propeller pitch device includes an adjustment control mechanism and a pitch actuator. The main function of the pitch actuator is to convert the reciprocating motion of the piston in the linear direction into the swing of the blade, so that the propeller reaches a balanced speed.

[0003] The beta tube is the variable pitch oil circuit of the propeller, such as Figure 1 As shown, the beta 100 includes an outer tube 300 and an inner tube 200 arranged inside the outer tube 300. Between the outer tube 300 and the inner tube 200 of the beta tube 100 is a small-pitch oil circuit, which is connected through the radially uniform holes at the front end of the outer tube and the radially distributed holes at the front end of the pull sleeve, and finally communicated with the small-pitch oil chamber. The inner hole of the inner tube of the beta tube is a large-pitch oil circuit, which is connected with the large-pitch oil chamber of the propeller through the front end of the axial through hole of the pull sleeve.

[0004] When the beta tube 100 is assembled manually, there is generally no dedicated assembly tool, and due to the special structure of the beta tube 100, it is difficult to adjust the installation angle of the inner tube after the inner tube 200 is installed in the outer tube 300, so that the installation holes of the elastic cylindrical pins on the inner tube and the outer tube are not easy to align, and then the inner tube and the outer tube are not easy to connect and fix. In addition, because the inner tube is integrally embedded in the outer tube, it is difficult to remove the inner tube. At the same time, when the beta tube is installed in the propeller, due to the special structure of the front joint part of the outer tube, it is difficult to assemble it using traditional tools, and there is a risk of cutting the sealing ring 400 on the wall of the outer tube, which is inconvenient to operate. In addition, no special tool that can be used for disassembling and assembling the beta tube has been found in the prior art.

[0005] Therefore, how to provide a method for adjusting the position of the inner tube in coordination with the inner tube head thread to ensure that workers can smoothly assemble the inner tube of the beta tube, and at the same time, when necessary, the inner tube can be conveniently removed to increase the convenience of operation; in addition, considering the structure of the outer tube head of the beta tube, damage to the sealing ring on the beta tube can be avoided when the beta tube is installed into the propeller, and a wrench for disassembling and assembling the propeller beta tube that improves the assembly efficiency of the beta tube is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0006] In view of this, the present invention provides a propeller beta tube disassembly and assembly wrench which can adjust the position of the inner tube in coordination with the inner tube head thread, thereby ensuring that workers can smoothly assemble the inner tube of the beta tube. At the same time, when necessary, the inner tube can be conveniently removed, thereby increasing the convenience of operation. In addition, while taking into account the structure of the outer tube head of the beta tube, damage to the sealing ring on the beta tube can be avoided when the beta tube is installed into the propeller, thereby improving the assembly efficiency of the beta tube.

[0007] In order to achieve the above object, the present invention adopts the following technical solution:

[0008] A wrench for disassembling and assembling a propeller beta tube, comprising:

[0009] A wrench rod, wherein the wrench rod has a pull rod passage running through both ends thereof, and a handle rod is fixed on an outer wall of the wrench rod near one end thereof;

[0010] A pull rod, the pull rod is inserted into the pull rod channel, one end of the pull rod has a threaded section for threaded connection with one end of the inner tube of the beta tube, and the other end of the pull rod is a pulling end;

[0011] An abutment sleeve, wherein the abutment sleeve is sleeved on the outer wall of the wrench rod, and one end of the abutment sleeve can abut against one end of the outer tube of the beta tube.

[0012] It can be seen from the above technical scheme that compared with the prior art, the present invention discloses a wrench for disassembling and assembling a propeller beta tube. When assembling the beta tube, first, the threaded section on the pull rod is threadedly fixed to the threaded hole at one end of the inner tube, and then the handle rod is lifted to assemble the inner tube into the outer tube, and the pulling end or the handle rod is rotated to align the elastic cylindrical pin mounting holes on the inner tube and the outer tube, and the elastic cylindrical pin is inserted into the elastic cylindrical pin mounting hole. At this point, the inner tube and outer tube of the beta tube are assembled; when the inner tube needs to be removed, the threaded section on the pull rod is threadedly fixed to the threaded hole at one end of the inner tube, the elastic cylindrical pin on the beta tube is removed, and one end of the abutment sleeve is abutted against one end face of the outer tube, so that when the inner tube is taken out, the outer tube will not move with the inner tube, and then the inner tube can be removed from the outer tube by pulling the pull rod outward through the pulling end. Therefore, the wrench can improve the efficiency of disassembly and assembly of the beta tube, that is, the wrench can adjust the position of the inner tube in conjunction with the inner tube head thread, ensuring that workers can smoothly assemble the inner tube of the beta tube. At the same time, when necessary, the inner tube can be easily removed, increasing the convenience of operation.

[0013] Furthermore, the wrench rod includes: a first rod segment and a second rod segment, one end of the first rod segment is fixedly connected to one end of the second rod segment, the first rod segment has a first channel running through both ends thereof, the second rod segment has a second channel running through both ends thereof, the first channel and the second channel are connected to form the pull rod channel, the abutment sleeve is sleeved on the first rod segment, the second rod segment can be inserted into one end of the outer tube, and a snap-fitting protrusion is fixed on one end of the first rod segment to engage with a snap-fitting groove on one end of the outer tube.

[0014] The beneficial effect of adopting the above technical solution is: when the beta tube needs to be assembled to the hole position on the propeller, the threaded section on the pull rod is threadedly fixed with the threaded hole at one end of the inner tube, and then the second rod section is inserted into one end of the outer tube, and the clamping protrusion is clamped into the clamping groove at one end of the outer tube, and then the handle rod is lifted to install the beta tube into the hole position on the propeller, and then the handle rod is rotated to assemble the beta tube in place, and after assembly, the pull-out end is rotated to separate the threaded section on the pull rod from the threaded hole of the inner tube and the wrench can be removed. Therefore, when the wrench is used to install the beta tube on the propeller, the wrench will not contact the sealing ring on the wall of the beta tube, and therefore, the sealing ring on the beta tube will not be damaged, ensuring the smooth installation of the beta tube.

[0015] Furthermore, a limiting hole is provided at one end of the abutting sleeve, and a limiting clamp ring is fixedly sleeved on the outer wall of the first rod segment close to one end thereof, and the limiting clamp ring can be stopped at the bottom surface of the limiting hole.

[0016] The beneficial effect of adopting the above technical solution is that the limiting clamp ring can limit the abutment sleeve to prevent the abutment sleeve from falling off the wrench rod and injuring workers or damaging other product parts.

[0017] Furthermore, an annular groove is provided on the outer wall of the first rod segment near one end thereof, and the limiting clamping ring is fixed in the annular groove.

[0018] The beneficial effect of adopting the above technical solution is that the limiting clamping ring is easy to quickly position and disassemble.

[0019] Furthermore, a stop boss is provided on the first rod segment near its other end, one end of the handle rod is fixedly connected to the outer wall of the stop boss, the other end of the abutment sleeve stops on one side of the stop boss, and the pulling end stops on the other side of the stop boss.

[0020] The beneficial effect of adopting the above technical solution is that the stop boss can limit the abutment sleeve to prevent the abutment sleeve from falling off the wrench rod and injuring workers or damaging other product parts.

[0021] Furthermore, a fixing hole is provided on the outer wall of the stop boss, and one end of the handle rod is plugged into the fixing hole.

[0022] The beneficial effect of adopting the above technical solution is that the handle rod is easy to disassemble and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 This is a schematic structural diagram of the existing beta tube provided by the present invention.

[0025] Figure 2 A schematic structural diagram of a wrench for disassembling and assembling a propeller beta tube provided by the present invention.

[0026] Figure 3 It is a schematic diagram of the cross-sectional structure of the wrench rod.

[0027] Figure 4 Schematic diagram of the external structure of the wrench rod.

[0028] Figure 5 It is a structural diagram of the pull rod.

[0029] Figure 6 It is a structural schematic diagram of a limiting clamp.

[0030] Figure 7 It is a schematic diagram of the threaded section on the pull rod being fixed to one end of the inner tube by threads.

[0031] Figure 8 for Figure 7 Schematic diagram of the enlarged structure of part A in the middle.

[0032] Fig. 9 It is a schematic diagram of the structure in which the clamping protrusion on the wrench rod is clamped and matched with the clamping groove on the outer tube. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0034] like Figure 1-Figure 9As shown, an embodiment of the present invention discloses a wrench for disassembling and assembling a propeller beta tube, comprising:

[0035] A wrench rod 1, wherein the wrench rod 1 has a pull rod channel 101 passing through both ends thereof, and a handle rod 2 is fixed on the outer wall of the wrench rod 1 near one end thereof;

[0036] The pull rod 3 is inserted into the pull rod channel 101, one end of the pull rod 3 has a threaded section 31 for threaded connection with one end of the inner tube 200 of the beta tube 100, and the other end of the pull rod 3 is a pulling end 32;

[0037] The abutting sleeve 4 is sleeved on the outer wall of the wrench rod 1 , and one end of the abutting sleeve 4 can abut against one end of the outer tube 300 of the beta tube 100 .

[0038] Among them, the wrench rod 1 includes: a first rod segment 11 and a second rod segment 12, the diameter of the first rod segment 11 is larger than the diameter of the second rod end 12, one end of the first rod segment 11 is fixedly connected to one end of the second rod segment 12, the first rod segment 11 has a first channel 111 running through its two ends, the second rod segment 12 has a second channel 121 running through its two ends, the first channel 111 and the second channel 121 are connected to form a pull rod channel 101, the abutment sleeve 4 is sleeved on the first rod segment 11, the second rod segment 12 can be inserted into one end of the outer tube 300, and a snap-on boss 112 is fixed on one end of the first rod segment 11 to snap-fit ​​with the snap-on groove 3001 on one end of the outer tube 300.

[0039] A limiting hole 41 is defined at one end of the abutting sleeve 4 , and a limiting clamp ring 5 is fixedly sleeved on an outer wall of the first rod section 11 near one end thereof. The limiting clamp ring 5 can be stopped at the bottom surface of the limiting hole 41 .

[0040] An annular groove 113 is formed on the outer wall of the first rod section 11 near one end thereof, and the limiting clamping ring 5 is clamped in the annular groove 113 .

[0041] A stop boss 114 is provided on the first rod section 11 near its other end. One end of the handle rod 2 is fixedly connected to the outer wall of the stop boss 114 . The other end of the sleeve 4 stops on one side of the stop boss 114 . The pulling end 32 stops on the other side of the stop boss 114 .

[0042] In order to facilitate the installation and fixing of the handle bar, a fixing hole 1141 is provided on the outer wall of the stop boss 114, and one end of the handle bar 2 is plugged into the fixing hole 1141. In addition, the handle bar 2 can also be welded to the stop boss to increase the installation stability of the handle bar.

[0043] In the above embodiment, the first channel and the second channel can both be round holes or square holes, and the pull rod can be a round rod or a square rod that matches the round hole. When the pull rod is a round rod, the pull rod can be rotated, and the threaded section on the pull rod and the threaded hole at one end of the inner tube can be disassembled and assembled by rotating the pulling end on the pull rod, and the position of the inner tube can be adjusted by rotating the pull rod so that the elastic cylindrical pin mounting hole on the inner tube is aligned with the elastic cylindrical pin mounting hole on the outer tube; when the pull rod is a square rod, the pull rod cannot be rotated, and the pull rod can be driven to rotate by rotating the handle rod to achieve disassembly and assembly of the threaded section on the pull rod and the threaded hole at one end of the inner tube, and the handle rod can be rotated to make the pull rod rotate together, and the position of the inner tube can be adjusted by the rotating pull rod so that the elastic cylindrical pin mounting hole on the inner tube is aligned with the elastic cylindrical pin mounting hole on the outer tube.

[0044] The use principle of the wrench of the present invention is as follows:

[0045] When assembling the beta tube, firstly, the threaded section on the pull rod is threadedly fixed with the threaded hole at one end of the inner tube, then the handle rod is lifted, the inner tube is assembled into the outer tube, the pulling end or the handle rod is rotated to align the inner tube with the elastic cylindrical pin installation hole on the outer tube, and the elastic cylindrical pin is inserted into the elastic cylindrical pin installation hole. At this point, the inner tube and the outer tube of the beta tube are assembled; when the inner tube needs to be removed, the threaded section on the pull rod is threadedly fixed with the threaded hole at one end of the inner tube, the elastic cylindrical pin on the beta tube is removed, and one end of the abutment sleeve is abutted against one end face of the outer tube, so that when the inner tube is removed, the outer tube will not move with the inner tube, and then the inner tube can be removed from the outer tube by pulling the pull rod outward through the pulling end. Therefore, the wrench can improve the disassembly and assembly efficiency of the beta tube, that is, the wrench can adjust the position of the inner tube in conjunction with the thread of the inner tube head, ensuring that the workers can smoothly assemble the inner tube of the beta tube, and at the same time, when necessary, the inner tube can be easily removed, increasing the convenience of operation.

[0046] When the beta tube needs to be assembled to the hole on the propeller, the threaded section on the pull rod is threadedly fixed with the threaded hole at one end of the inner tube, and then the second rod section is inserted into one end of the outer tube, and the clamping protrusion is clamped into the clamping groove at one end of the outer tube, and then the handle rod is lifted to install the beta tube into the hole on the propeller, and then the handle rod is rotated to assemble the beta tube in place, and after assembly, the pull-out end or the handle rod is rotated to separate the threaded section on the pull rod from the threaded hole of the inner tube, and the wrench can be removed. Therefore, when the wrench is used to install the beta tube on the propeller, the wrench will not contact the sealing ring on the wall of the beta tube, and therefore, the sealing ring on the beta tube will not be damaged, ensuring the smooth installation of the beta tube.

[0047] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0048] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wrench for disassembling and assembling a propeller beta tube, characterized in that: include: A wrench rod (1), wherein the wrench rod (1) has a pull rod channel (101) passing through both ends thereof, and a handle rod (2) is fixed on an outer wall of the wrench rod (1) near one end thereof; A pull rod (3), the pull rod (3) being inserted into the pull rod channel (101), one end of the pull rod (3) having a threaded section (31) for threaded connection with one end of the inner tube (200) of the beta tube (100), and the other end of the pull rod (3) being a pulling end (32); An abutment sleeve (4), wherein the abutment sleeve (4) is sleeved on the outer wall of the wrench rod (1), and one end of the abutment sleeve (4) can abut against one end of the outer tube (300) of the beta tube (100).

2. A wrench for disassembling and assembling a propeller beta tube according to claim 1, characterized in that: The wrench rod (1) comprises: a first rod section (11) and a second rod section (12); one end of the first rod section (11) is fixedly connected to one end of the second rod section (12); the first rod section (11) has a first channel (111) passing through both ends thereof; the second rod section (12) has a second channel (121) passing through both ends thereof; the first channel (111) and the second channel (121) are connected to form the pull rod channel (101); the abutment sleeve (4) is sleeved on the first rod section (11); the second rod section (12) can be inserted into one end of the outer tube (300); a snap-fitting protrusion (112) is fixed on one end of the first rod section (11) and is snap-fitted with a snap-fitting groove (3001) on one end of the outer tube (300).

3. A wrench for disassembling and assembling a propeller beta tube according to claim 2, characterized in that: A limiting hole (41) is provided at one end of the abutting sleeve (4), and a limiting clamping ring (5) is sleeved on the outer wall of the first rod section (11) near one end thereof, and the limiting clamping ring (5) can be stopped at the bottom surface of the limiting hole (41).

4. A wrench for disassembling and assembling a propeller beta tube according to claim 3, characterized in that: An annular groove (113) is provided on the outer wall of the first rod section (11) near one end thereof, and the limiting clamping ring (5) is clamped in the annular groove (113).

5. A wrench for disassembling and assembling a propeller beta tube according to any one of claims 2 to 4, characterized in that: A stop boss (114) is provided on the first rod section (11) at a position close to the other end thereof; one end of the handle rod (2) is fixedly connected to the outer wall of the stop boss (114); the other end of the abutment sleeve (4) stops at one side of the stop boss (114); and the pulling end (32) stops at the other side of the stop boss (114).

6. A wrench for disassembling and assembling a propeller beta tube according to claim 5, characterized in that: A fixing hole (1141) is provided on the outer wall of the stop boss (114), and one end of the handle rod (2) is plugged into the fixing hole (1141).

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