Aero-engine bleed air port clamp tensioning device

Abstract

The invention discloses an aero-engine bleed air port clamp tensioning device which is used for installing a plug in a clamp, two free ends of the clamp are provided with a first positioning hole and a second positioning hole respectively, and the aero-engine bleed air port clamp tensioning device comprises a positioning mechanism, a tensioning mechanism and a locking mechanism; the positioning mechanism is used for being connected with a first positioning hole of the hoop; the tensioning mechanism comprises a tensioning seat detachably connected with the positioning mechanism, a tensioning assembly movably arranged on the tensioning seat and a tensioning pin connected with the tensioning assembly, the tensioning assembly is used for driving the tensioning pin to move in the direction close to or away from the positioning mechanism, and the tensioning pin is used for being connected with a second positioning hole of the clamp; the locking mechanism is arranged between the positioning mechanism and the tensioning mechanism and used for locking or separating the positioning mechanism and the tensioning mechanism. According to the hoop tensioning device for the air-entraining opening of the aero-engine, a plug can be stably installed in the hoop of the air-entraining opening of the aero-engine, installation is convenient and rapid, and the precision is high.

Description

Technical Field

[0001] The present invention relates to the technical field of aero-engine component assembly, and in particular, to a clamping device for tightening the air extraction port of an aero-engine. Background Art

[0002] As Figure 1 and Figure 2 shown, a plug needs to be installed on the air extraction port of the compressor casing of a certain type of aero-engine and fixed by a clamping band. The two free ends of the clamping band are respectively provided with a sleeve and a rotary bolt. The rotary bolt is used to swing relative to the main body of the clamping band to the state of being clamped on the sleeve or separated from the sleeve, and after the rotary bolt is clamped on the sleeve, the clamping band can be locked and fixed.

[0003] Regarding the installation of the plug inside the inner ring of the clamping band, the traditional installation method is as follows: The operator holds the two free ends of the clamping band with both hands and forces the clamping band to expand. After the clamping band undergoes plastic deformation, the plug is then inserted into the inner ring of the clamping band, and the rotary bolt is sleeved into the sleeve of the clamping band. Then, the clamping band is installed on the air extraction port of the compressor casing. During the installation process, the operator needs to close and press the clamping band with one hand while tightening the self-locking nut. Since the operator's hands need to apply a great deal of force to complete the installation during the process of expanding and squeezing the main body of the clamping band, not only is the installation inconvenient and difficult, but it is also easy to cause hand injuries to the operator. Moreover, it is difficult to control the tightening direction of the clamping band to be completely perpendicular to the end face of the clamping band, and it is difficult to align manually, resulting in possible slight deflection of the clamping band, causing deformation of the main body of the clamping band under torsional force, and the plug may not be able to fit tightly with the clamping band after being installed inside the clamping band, thus causing air leakage at the air extraction port of the aero-engine. Summary of the Invention

[0004] The present invention provides a clamping device for tightening the air extraction port of an aero-engine to solve the technical problem that it is difficult to accurately install a plug for the clamping band of the existing air extraction port of an aero-engine.

[0005] According to one aspect of the present invention, there is provided a clamping device for tightening the air extraction port of an aero-engine for installing a plug inside the clamping band. The clamping band is used to be installed on the air extraction port of the compressor casing of the aero-engine. The two free ends of the clamping band are respectively provided with a first positioning hole and a second positioning hole. The clamping device for tightening the air extraction port of the aero-engine includes a positioning mechanism, a tensioning mechanism, and a locking mechanism;

[0006] The positioning mechanism is used to connect with the first positioning hole of the clamping band;

[0007] The tensioning mechanism includes a tensioning seat detachably connected to the positioning mechanism, a tensioning assembly movably disposed on the tensioning seat, and a tensioning pin connected to the tensioning assembly. The tensioning assembly is used to drive the tensioning pin to move in a direction approaching or departing from the positioning mechanism, and the tensioning pin is used to connect to the second positioning hole of the clamp;

[0008] The locking mechanism is disposed between the positioning mechanism and the tensioning mechanism, and the locking mechanism is used to lock or separate the positioning mechanism and the tensioning mechanism.

[0009] Preferably, the tensioning seat is provided with a through hole in a direction towards the positioning mechanism, and one end of the through hole remote from the positioning mechanism is provided as a threaded hole;

[0010] The tensioning assembly includes a screw threadedly connected to the threaded hole, a driving rod rotatably connected to one end of the screw towards the positioning mechanism, and a limiting assembly connected to the driving rod and circumferentially fixing the driving rod relative to the through hole. The screw is used to be driven to rotate and drive the driving rod to move axially through threaded engagement when rotating, and the tensioning pin is mounted on the driving rod.

[0011] Preferably, the through hole further includes a first through hole and a second through hole sequentially arranged at one end of the threaded hole towards the positioning mechanism. The aperture of the first through hole is larger than that of the second through hole to form a limiting step between the first through hole and the second through hole. The driving rod is adapted to the second through hole and penetrates into the first through hole along the second through hole. A limiting convex ring is provided on the outer periphery of one end of the driving rod towards the screw;

[0012] The tensioning assembly further includes a compression spring elastically pressed in the first through hole and sleeved on the driving rod. A first end of the compression spring abuts against the limiting step, and a second end of the compression spring abuts against the limiting convex ring.

[0013] Preferably, the tensioning seat is further provided with a limiting hole arranged in the radial direction of the through hole, a limiting sliding groove is arranged at a position of the driving rod corresponding to the limiting hole, and the limiting assembly includes a limiting pin inserted into the limiting sliding groove along the limiting hole. The limiting pin is used to limit the driving rod from rotating relative to the through hole.

[0014] Preferably, the length of the limiting sliding groove is adapted to the moving stroke of the tensioning pin. A first end of the limiting sliding groove corresponds to the position where the tensioning pin is located in the fully closed state of the clamp, and a second end of the limiting sliding groove corresponds to the position where the tensioning pin is located in the fully open state of the clamp.

[0015] Preferably, a first handle is provided on the tensioning seat, a second handle is provided on the screw rod, and a driving portion for connecting to a driving tool is further provided at one end of the screw rod away from the driving rod.

[0016] Preferably, the positioning mechanism includes a positioning seat, positioning pins respectively arranged on the positioning seat and a support base, the positioning pin is used to connect with the first positioning hole of the clamp, the support base is hinged to the positioning seat and is used to rotate relative to the positioning seat to abut against or disengage from the clamp, and the support base is used to abut against the side of the clamp away from the positioning pin and clamp and fix the clamp together with the positioning seat.

[0017] Preferably, the positioning pin is arranged on the end face of the positioning seat, and the support base includes a connecting portion hinged to the side wall of the positioning seat, and a supporting portion connected to one end of the connecting portion away from the positioning seat, and the supporting portion is vertically arranged relative to the connecting portion to form an "L"-shaped structure.

[0018] Preferably, one of the tensioning seat and the positioning mechanism is provided with an insertion slot, and the other is provided with an insertion part inserted into the insertion slot, and locking holes are provided at corresponding positions of the side wall of the insertion slot and the insertion part, and the locking mechanism includes a locking pin which is sequentially inserted into the locking holes of the insertion slot and the insertion part.

[0019] Preferably, the plug-in slot is provided with an escape notch along the axial direction of the tensioning pin for the plug-in portion to move out of the plug-in slot.

[0020] The present invention has the following beneficial effects:

[0021] The aero-engine air intake port clamp tensioning device provided by the present invention is connected to the first positioning hole of the clamp through a positioning mechanism, and is connected to the second positioning hole of the clamp through a tensioning pin on the tensioning mechanism. The tensioning assembly can be used to drive the tensioning pin to move in a direction close to or away from the positioning mechanism to realize the opening or closing action of the clamp. Compared with manually breaking or pressing the clamp, it is safer and more labor-saving, ensuring the tensioning accuracy of the clamp, avoiding the clamp from being offset and misaligned, thereby ensuring the installation accuracy of the plug. Secondly, a locking mechanism is also provided between the positioning mechanism and the tensioning mechanism. When the tensioning mechanism drives the clamp to be fully opened, the clamp undergoes plastic deformation and will not rebound. At this time, the tensioning mechanism can be separated from the positioning mechanism by the locking mechanism, so that the tensioning mechanism can be removed to avoid the tensioning mechanism from interfering with the installation of the plug, thereby improving the convenience of the installation of the plug. After the installation of the plug is completed, the tensioning mechanism can be reset and the positioning mechanism and the tensioning mechanism can be locked by the locking mechanism. At this time, the tensioning mechanism can be used to drive the clamp to close and reset. The installation is convenient and quick, no interference will occur, and the accuracy is high and the stability is strong.

[0022] In addition to the purposes, features and advantages described above, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the drawings. Description of the Drawings

[0023] The drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0024] Figure 1 is a schematic structural diagram of a clamp applicable to an embodiment of the present invention;

[0025] Figure 2 is Figure 1 an exploded view of the clamp shown;

[0026] Figure 3 is a schematic structural diagram of an air intake port clamp tensioning device for an aeroengine provided by an embodiment of the present invention;

[0027] Figure 4 is Figure 3 a sectional structural diagram of the air intake port clamp tensioning device for an aeroengine shown;

[0028] Figure 5 is Figure 3 a reference diagram of the use state of the air intake port clamp tensioning device for an aeroengine shown;

[0029] Figure 6 is Figure 5 an exploded view of the air intake port clamp tensioning device for an aeroengine shown.

[0030] Legend:

[0031] 1000, air intake port clamp tensioning device for an aeroengine; 1, positioning mechanism; 11, positioning seat; 111, insertion part; 12, positioning pin; 13, support base; 131, connection part; 132, support part; 2, tensioning mechanism; 21, tensioning seat; 211, through hole; 2111, threaded hole; 2112, first through hole; 2113, second through hole; 2114, limiting step; 212, limiting hole; 213, insertion slot; 2131, avoidance notch; 22, tensioning assembly; 221, screw rod; 222, driving rod; 2221, limiting convex ring; 2222, limiting sliding groove; 223, limiting component; 2231, limiting pin; 224, compression spring; 225, driving part; 23, tensioning pin; 24, first handle; 25, second handle; 3, locking mechanism; 31, locking pin; 311, positioning protrusion; 32, pull ring;

[0032] 100, Clamp; 101, First positioning hole; 102, Second positioning hole; 103, Sleeve; 104, Rotary bolt; 105, Self-locking nut; 200, Plug. Detailed implementation mode

[0033] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways defined and covered by the following. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation of the present invention.

[0034] Those skilled in the art of the present technology can understand that, unless specifically stated otherwise, the term "including" used in the specification of the present invention means the presence of the described features, integers, steps, operations, parts and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, parts, components and / or their combinations. It should be understood that when we say that a part is "connected" to another part, it can be directly connected to other parts or connected through intermediate parts. The term "and / or" used here includes all or any unit and all combinations of one or more related listed items. The terms "first" and "second" etc. in the specification and claims of the present invention are used to distinguish different objects, rather than to describe a specific order.

[0035] Figures 3 to 6 Collectively show the air intake port clamp tensioning device provided by the embodiment of the present invention, which is used to install the plug 200 on the inner ring of the clamp 100, can drive the clamp 100 to open and close stably, and can be separated and removed from the tensioning mechanism after the clamp 100 is fully opened, effectively avoiding interference with the installation operation of the plug 200, thereby improving the installation convenience and installation accuracy of the plug 200 and reducing the installation difficulty.

[0036] Such as Figure 1 And Figure 2As shown, the clamp 100 is used to be installed on the air extraction port of the compressor casing of an aeroengine, and the plug 200 is used to seal the air extraction port. Therefore, the matching precision between the clamp 100 and the plug 200 determines the sealing effect of the air extraction port of the aeroengine. Specifically, the clamp 100 is set as an unclosed ring structure. Sleeve pipes 103 and swivel bolts 104 are respectively arranged at two free ends of the clamp 100. The swivel bolts 104 are used to swing relative to the clamp body to a state of being clamped on the sleeve pipes 103 or separated from the sleeve pipes 103. A self-locking nut 105 is threadedly connected to the swivel bolts 104. After the swivel bolts 104 are clamped on the sleeve pipes 103, the self-locking nut 105 is used to lock and fix the swivel bolts 104 relative to the sleeve pipes 103, so as to realize the locking and fixing of two free ends of the clamp 100. Further, a first positioning hole 101 is arranged at one free end of the clamp 100, and a second positioning hole 102 is arranged at the other free end.

[0037] Please refer to Figure 3 and Figure 4 , the aeroengine air extraction port clamp tensioning device 1000 includes a positioning mechanism 1, a tensioning mechanism 2 and a locking mechanism 3; the positioning mechanism 1 is used to be connected with the first positioning hole 101 of the clamp 100; the tensioning mechanism 2 includes a tensioning seat 21 detachably connected with the positioning mechanism 1, a tensioning component 22 movably arranged on the tensioning seat 21, and a tensioning pin 23 connected with the tensioning component 22. The tensioning component 22 is used to drive the tensioning pin 23 to move in a direction close to or away from the positioning mechanism 1, and the tensioning pin 23 is used to be connected with the second positioning hole 102 of the clamp 100; the locking mechanism 3 is arranged between the positioning mechanism 1 and the tensioning mechanism 2, and the locking mechanism 3 is used to lock or separate the positioning mechanism 1 and the tensioning mechanism 2.

[0038] Please refer to Figure 5 and Figure 6, the air intake duct clamp tensioning device 1000 of the aero-engine is connected to the first positioning hole 101 of the clamp 100 through the positioning mechanism 2 and connected to the second positioning hole 102 of the clamp 100 through the tensioning pin 23 on the tensioning mechanism 2. It can drive the tensioning pin 23 to move in the direction close to or away from the positioning mechanism 1 by using the tensioning assembly 22 to realize the opening or closing action of the clamp 100, which is safer and more labor-saving than manually prying open or pressing the clamp 100, ensuring the tensioning accuracy of the clamp 100 and avoiding the offset and dislocation of the clamp 100, so as to ensure the installation accuracy of the plug 200. Secondly, a locking mechanism 3 is further provided between the positioning mechanism 1 and the tensioning mechanism 2. After the tensioning mechanism 2 drives the clamp 100 to fully open, the clamp 100 undergoes plastic deformation and will not rebound. At this time, the tensioning mechanism 2 can be separated from the positioning mechanism 1 through the locking mechanism 3, so that the tensioning mechanism 2 can be removed to avoid interference of the tensioning mechanism 2 on the installation of the plug 200, improving the installation convenience of the plug 200. After the plug 200 is installed, the tensioning mechanism 2 can be reset and the positioning mechanism 1 and the tensioning mechanism 2 can be locked through the locking mechanism 3. At this time, the tensioning mechanism 2 can be used to drive the clamp 100 to close and reset, with convenient and fast installation, no interference, high precision and strong stability.

[0039] As Figure 4 shown, a through hole 211 is provided in the tensioning seat 21 along the direction towards the positioning mechanism 1, and the end of the through hole 211 away from the positioning mechanism 1 is provided as a threaded hole 2111; the tensioning assembly 22 includes a screw rod 221, a driving rod 222 and a limiting assembly 223. The screw rod 221 is inserted into the threaded hole 2111 and is threadedly connected to the threaded hole 2111. The driving rod 222 is rotatably connected to the end of the screw rod 221 towards the positioning mechanism 1. The driving rod 222 passes through the through hole 211 to the end of the tensioning seat 21 towards the positioning mechanism 1. The tensioning pin 23 is installed on the driving rod 222, and the limiting assembly 223 is connected to the driving rod 222 to circumferentially fix the driving rod 222 relative to the through hole 211, so as to prevent the driving rod 222 from driving the tensioning pin 23 to rotate and ensure that the tensioning pin 23 is located in the tensioning direction of the clamp 100.

[0040] Preferably, the through hole 211 further includes a first through hole 2112 and a second through hole 2113 which are sequentially arranged along one end of the threaded hole 2111 facing the positioning mechanism 1, that is, the through hole 211 includes the threaded hole 2111, the first through hole 2112 and the second through hole 2113 which are coaxially arranged in sequence along the direction facing the positioning mechanism 1; the aperture of the first through hole 2112 is larger than that of the second through hole 2113 to form a limiting step 2114 between the first through hole 2112 and the second through hole 2113. The driving rod 222 is adapted to the second through hole 2113 and penetrates into the first through hole 2112 along the second through hole 2113. The driving rod 222 is used for guiding and sliding along the second through hole 2113, and an annular receiving cavity is formed between the driving rod 222 and the first through hole 2112. A limiting convex ring 2221 is provided on the outer periphery of one end of the driving rod 222 facing the screw rod 221.

[0041] Further, the tensioning assembly 22 further includes a compression spring 224 disposed in the annular receiving cavity. The compression spring 224 is sleeved on the driving rod 222. A first end of the compression spring 224 abuts against the limiting step 2114, and a second end of the compression spring 224 abuts against the limiting convex ring 2221 to apply an elastic force to the driving rod 222 in a direction away from the positioning mechanism 1 through the compression spring 224.

[0042] In this embodiment, the end of the screw rod 221 abuts against the end face of the driving rod 222, that is, there is no direct connection between the screw rod 221 and the driving rod 222 to realize the free rotation of the screw rod 221 relative to the driving rod 222. When the screw rod 221 is driven to rotate, the axial movement of the screw rod 221 can be realized through the thread fit between the screw rod 221 and the threaded hole 2111, so that the driving rod 222 can be pushed by the screw rod 221 to move in a direction close to the positioning mechanism 1; when the screw rod 221 is driven to move in a direction away from the positioning mechanism 1, the driving rod 222 can also be pushed by the compression spring 224 to move in a direction away from the positioning mechanism 1, thereby realizing the bidirectional driving of the driving rod 222.

[0043] In other embodiments, the screw rod 221 and the driving rod 222 can also be integrally connected. For example, a connecting hole is axially formed in one of the screw rod 221 and the driving rod 222, and a connecting column is provided on the other to pass through the connecting hole. A limiting ring groove is provided in the connecting hole, and a limiting ring is provided on the connecting column to be clamped in the limiting ring groove. While allowing the connecting column to rotate relative to the connecting hole, the axial limiting and fixing of the connecting column and the connecting hole are realized through the clamping cooperation between the limiting ring and the limiting ring groove. At this time, the screw rod 221 can not only push the driving rod 222 to move in the direction close to the positioning mechanism 1, but also pull the driving rod 222 to move in the direction away from the positioning mechanism 1, and can also realize the bidirectional driving of the driving rod 222.

[0044] Preferably, the tensioning seat 21 is further provided with a limiting hole 212 radially arranged along the through hole 211. A limiting sliding groove 2222 is formed at the position of the driving rod 222 corresponding to the limiting hole 212. The limiting sliding groove 2222 extends along the axial direction of the driving rod 222. The limiting component 223 includes a limiting pin 2231 inserted into the limiting sliding groove 2222 along the limiting hole 212. The limiting pin 2231 is used to prevent the driving rod 222 from rotating relative to the through hole 211. Through the limiting cooperation between the limiting pin 2231 and the limiting sliding groove 2222, the circumferential fixing of the driving rod 222 is realized, and the limiting structure is simple and efficient.

[0045] Preferably, the length of the limiting sliding groove 2222 is adapted to the moving stroke of the tensioning pin 23. The first end of the limiting sliding groove 2222 corresponds to the position where the tensioning pin 23 is located when the clamp 100 is in the fully closed state, and the second end of the limiting sliding groove 2222 corresponds to the position where the tensioning pin 23 is located when the clamp 100 is in the fully open state. That is, when the driving rod 222 axially moves to the state where the first end of the limiting sliding groove 2222 abuts against the tensioning pin 23, the clamp 100 is in the fully closed state; when the driving rod 222 axially moves to the state where the second end of the limiting sliding groove 2222 abuts against the tensioning pin 23, the clamp 100 is in the fully open state. While realizing the circumferential fixing of the driving rod 222 through the cooperation between the limiting sliding groove 2222 and the tensioning pin 23, the moving stroke of the driving rod 222 can also be accurately controlled to prevent the damage of the clamp 100 caused by the excessive moving stroke of the tensioning pin 23.

[0046] Optionally, in other embodiments, a plurality of tension pins 23 are arranged circumferentially along the driving rod 222. The plurality of tension pins 23 are used to adapt to the second positioning holes 102 on the clamp 100 of different specifications. The limiting sliding grooves 2222 are also arranged circumferentially along the driving rod 222, and the plurality of limiting sliding grooves 2222 are arranged in one-to-one correspondence with the plurality of tension pins 23. During use, the circumferential fixation of the driving rod 222 can be released by pulling out the limiting pin 2231. After rotating the corresponding tension pin 23 to the working position, the limiting pin 2231 is inserted into the corresponding limiting sliding groove 2222 and the driving rod 222 is circumferentially fixed, so as to realize the flexible switching of different tension pins 23, meet different usage requirements, adapt to different clamps 100, and effectively improve the applicability.

[0047] Preferably, the tensioning mechanism 2 further includes a first handle 24 and a second handle 25. The first handle 24 is installed on the tensioning seat 21 for holding and fixing the tensioning seat 21, and the second handle 25 is installed on the screw rod 221 for holding and driving the screw rod 221 to rotate, improving the convenience of use.

[0048] Furthermore, the first handle 24 is arranged on the side of the tensioning seat 21 away from the tension pin 23 to prevent the first handle 24 from interfering with the clamp 100. The second handle 25 penetrates through the screw rod 221 and extends outward along the opposite sides of the screw rod 221 respectively. Since the screw rod 221 is arranged away from the tension pin 23, the second handle 25 will not interfere with the clamp 100, and arranging the handle 25 to penetrate through the screw rod 221 is more convenient for driving the screw rod 221 to rotate.

[0049] As Figure 3 shown, more preferably, a driving part 225 for connecting with a driving tool is further arranged at one end of the screw rod 221 away from the driving rod 222. The driving part 225 is set to a structure adapted to a driving wrench, such as an external hexagonal structure, a square structure or an internal hexagonal structure, etc., which is convenient for using a manual wrench or an electric wrench to clamp and drive the screw rod 221 to rotate, so as to meet two different usage scenarios of manual driving and electric driving, and further improve the applicability.

[0050] Preferably, the positioning mechanism 1 includes a positioning seat 11, a positioning pin 12 and a support base 13 respectively arranged on the positioning seat 11. The positioning pin 12 is used to connect with the first positioning hole 101 of the clamp 100. The support base 13 is hinged to the positioning seat 11 and is used to rotate relative to the positioning seat 11 to a state of abutting against or disengaging from the clamp 100. The support base 13 is used to abut against the side of the clamp 100 away from the positioning pin 12 and jointly clamp and fix the clamp 100 with the positioning seat 11.

[0051] Specifically, since the support base 13 is hinged to the positioning base 11, the support base 13 can rotate relative to the positioning base 11 to a state of abutting against the clamp 100 or a state of disengaging from the clamp 100. When the support base 13 is in the state of disengaging from the clamp 100, it is convenient to quickly disassemble and assemble the clamp 100; and when the support base 13 is in the state of abutting against the clamp 100, the support base 13 abuts against the side of the clamp 100 away from the positioning pin 12. Thus, while the first positioning hole 101 is positioned by inserting the positioning pin 12, the clamp 100 can also be clamped and fixed jointly by the support base 13 and the positioning base 11, realizing the positioning and fixing of the clamp 100 relative to the positioning mechanism 1, and the positioning structure is simple and efficient.

[0052] Furthermore, the positioning pin 12 is arranged on the end face of the positioning base 11. The support base 13 includes a connecting portion 131 and a supporting portion 132. The connecting portion 131 is hinged to the side wall of the positioning base 11, that is, the connecting portion 131 and the positioning pin 12 are respectively located on different planes of the positioning base 11. The supporting portion 132 is connected to the end of the connecting portion 131 away from the positioning base 11 and is vertically arranged relative to the connecting portion 131. The supporting portion 132 and the connecting portion 131 jointly form an "L" - shaped structure, so that the support base 13 can be arranged around the clamp 100, fully fitting and fixing the clamp 100 to improve the positioning effect.

[0053] As Figure 6 shown, the tensioning base 21 is provided with an insertion slot 213, the positioning base 11 is provided with an insertion portion 111, and locking holes (not labeled, the same below) are respectively formed at corresponding positions on the side wall of the insertion slot 213 and the insertion portion 111. The locking mechanism 3 includes a locking pin 31 that is sequentially inserted into the locking holes of the insertion slot 213 and the insertion portion 111. When assembling the positioning mechanism 1 and the tensioning mechanism 2, the insertion portion 111 can be first inserted into the insertion slot 213 to realize the pre - positioning of the positioning mechanism 1 and the tensioning mechanism 2, and then the locking pin 31 is sequentially inserted into the locking holes of the insertion slot 213 and the insertion portion 111 to realize the locking and fixing of the positioning mechanism 1 and the tensioning mechanism 2. The assembly is convenient and fast, ensuring the assembly accuracy.

[0054] Preferably, the insertion groove 213 is provided with an avoidance notch 2131 along the axial direction of the tensioning pin 23 for the insertion part 111 to move out of the insertion groove 213. The insertion part 111 can not only be inserted into the insertion groove 213 along the connection direction of the positioning mechanism 1 and the tensioning mechanism 2, but also be inserted into or moved out of the insertion groove 213 along the avoidance notch 213. When the clamp 100 is installed on the positioning mechanism 1, the tensioning pin 23 can only move axially relative to the clamp 100. At this time, the insertion part 111 is disassembled and assembled by using the avoidance notch 213, effectively avoiding the interference of the clamp 100 on the disassembly and assembly operation of the tensioning mechanism 2.

[0055] It should be understood that in other embodiments, the insertion groove 213 can also be provided on the positioning seat 11. At this time, the insertion part 111 is provided on the tensioning seat 21, and the assembly and positioning of the tensioning seat 21 relative to the positioning seat 11 can also be realized through the cooperation of the insertion part 111 and the insertion groove 213.

[0056] Preferably, the locking pin 31 is provided with a positioning protrusion 311 made of an elastic material. The positioning protrusion 311 is used to abut against the side wall of the insertion groove 213 or the insertion part 111 after the locking pin 31 is installed in place, so as to realize the axial positioning of the locking pin 31 and prevent the locking pin 31 from loosening by itself.

[0057] Furthermore, the locking mechanism 3 further includes a pull ring 32 connected to the locking pin 31. The pull ring 32 is used to pull the locking pin 31 to move, so as to quickly disassemble and assemble the locking pin 31 and realize the quick locking or separation action of the tensioning mechanism 2.

[0058] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An air extraction port clamp tensioning device for an aeroengine, which is used to install a plug (200) in a clamp (100). The clamp (100) is used to be installed on the air extraction port of the compressor casing of the aeroengine. Two free ends of the clamp (100) are respectively provided with a first positioning hole (101) and a second positioning hole (102), and it is characterized in that, The air intake duct clamp tensioning device of the aeroengine includes a positioning mechanism (1), a tensioning mechanism (2) and a locking mechanism (3). The positioning mechanism (1) is used for connecting with the first positioning hole (101) of the clamp (100). The tensioning mechanism (2) includes a tensioning seat (21) detachably connected to the positioning mechanism (1), a tensioning component (22) movably arranged on the tensioning seat (21), and a tensioning pin (23) connected to the tensioning component (22). The tensioning component (22) is used for driving the tensioning pin (23) to move in a direction close to or away from the positioning mechanism (1), and the tensioning pin (23) is used for connecting with the second positioning hole (102) of the clamp (100). The locking mechanism (3) is arranged between the positioning mechanism (1) and the tensioning mechanism (2), and the locking mechanism (3) is used for locking or separating the positioning mechanism (1) and the tensioning mechanism (2).

2. The air extraction port clamp tensioning device of an aeroengine according to claim 1, wherein, The tensioning seat (21) is provided with a through hole (211) along the direction towards the positioning mechanism (1), and one end of the through hole (211) far from the positioning mechanism (1) is set as a threaded hole (2111). The tensioning component (22) includes a screw rod (221) threadedly connected to the threaded hole (2111), a driving rod (222) rotatably connected to one end of the screw rod (221) towards the positioning mechanism (1), and a limiting component (223) connected to the driving rod (222) and circumferentially fixing the driving rod (222) relative to the through hole (211). The screw rod (221) is used for being driven to rotate and driving the driving rod (222) to move axially through threaded cooperation when rotating, and the tensioning pin (23) is installed on the driving rod (222).

3. The air bleed port clamp tensioning device for an aeroengine according to claim 2, characterized in that The through hole (211) further includes a first through hole (2112) and a second through hole (2113) sequentially arranged along one end of the threaded hole (2111) towards the positioning mechanism (1). The aperture of the first through hole (2112) is larger than that of the second through hole (2113) to form a limiting step (2114) between the first through hole (2112) and the second through hole (2113). The driving rod (222) is adapted to the second through hole (2113) and penetrates into the first through hole (2112) along the second through hole (2113). A limiting convex ring (2221) is arranged on the outer periphery of one end of the driving rod (222) towards the screw rod (221). The tensioning component (22) further includes a compression spring (224) elastically pressed in the first through hole (2112) and sleeved on the driving rod (222). The first end of the compression spring (224) abuts against the limiting step (2114), and the second end of the compression spring (224) abuts against the limiting convex ring (2221).

4. The air extraction port clamp tensioning device of an aero-engine according to claim 2 or 3, characterized in that, The tensioning seat (21) is further provided with a limiting hole (212) arranged radially along the through hole (211). A limiting chute (2222) is arranged at a position corresponding to the limiting hole (212) on the driving rod (222). The limiting component (223) includes a limiting pin (2231) inserted into the limiting chute (2222) along the limiting hole (212). The limiting pin (2231) is used to limit the driving rod (222) from rotating relative to the through hole (211).

5. The air extraction port clamp tensioning device of an aeroengine according to claim 4, characterized in that, The length of the limiting chute (2222) is adapted to the moving stroke of the tensioning pin (23). The first end of the limiting chute (2222) corresponds to the position where the tensioning pin (23) is located when the clamp (100) is in a fully closed state. The second end of the limiting chute (2222) corresponds to the position where the tensioning pin (23) is located when the clamp (100) is in a fully open state.

6. The air extraction port clamp tensioning device of an aeroengine according to claim 2, wherein A first handle (24) is provided on the tensioning seat (21). A second handle (25) is provided on the screw rod (221). A driving part (225) for connecting with a driving tool is further provided at one end of the screw rod (221) far from the driving rod (222).

7. The air extraction port clamp tensioning device of an aeroengine according to claim 1, characterized in that The positioning mechanism (1) includes a positioning seat (11), a positioning pin (12) and a supporting base (13) respectively arranged on the positioning seat (11). The positioning pin (12) is used to connect with the first positioning hole (101) of the clamp (100). The supporting base (13) is hinged to the positioning seat (11) and is used to rotate relative to the positioning seat (11) to a state of abutting against or disengaging from the clamp (100). The supporting base (13) is used to abut against one side of the clamp (100) far from the positioning pin (12) and jointly clamp and fix the clamp (100) with the positioning seat (11).

8. The air bleed port clamp tensioning device of an aeroengine according to claim 7, characterized in that The positioning pin (12) is arranged on the end face of the positioning seat (11). The supporting base (13) includes a connecting part (131) hinged to the side wall of the positioning seat (11), and a supporting part (132) connected to one end of the connecting part (131) far from the positioning seat (11). The supporting part (132) is vertically arranged relative to the connecting part (131) to form an "L" - shaped structure.

9. The air extraction port clamp tensioning device of an aero-engine according to claim 1, characterized in that One of the tensioning seat (21) and the positioning mechanism (1) is provided with a plug - in slot (213), and the other is provided with a plug - in part (111) inserted into the plug - in slot (213). Locking holes are respectively arranged at corresponding positions on the side wall of the plug - in slot (213) and the plug - in part (111). The locking mechanism (3) includes a locking pin (31) sequentially passing through the locking holes of the plug - in slot (213) and the plug - in part (111).

10. The air bleed port clamp tensioning device of an aeroengine according to claim 9, characterized in that, The plug - in slot (213) is provided with an avoidance notch (2131) along the axial direction of the tensioning pin (23) for the plug - in part (111) to move out of the plug - in slot (213).

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