A connection assembly, engine and method of use

Abstract

The application relates to the technical field of engine part connection, in particular to a connecting assembly, an engine and a use method. The connecting assembly comprises a connecting sleeve, a smooth inner hole section is arranged in the connecting sleeve, and the connecting sleeve is suitable for being arranged in a boss of a cylinder block; a connecting rod comprises a connecting part and a first limiting part which are connected, the first limiting part is suitable for being in contact with the connecting sleeve, the outer diameter of the connecting part is smaller than the inner diameter of the smooth inner hole section, and the end of the connecting part away from the first limiting part is suitable for being connected with a supporting support plate. The application provides the connecting assembly, the engine and the use method, so as to solve the problem that interference fit needs to be adopted when the pin is respectively connected with the cylinder block and the supporting support plate, the pin is difficult to be disassembled when the engine is disassembled, and even the disassembly needs to be damaged.

Description

Technical Field

[0001] This invention relates to the field of engine component connection technology, specifically to a connection assembly, an engine, and a method of using it. Background Technology

[0002] The load-bearing support structure of an aero-engine supports the turbine rotor and transfers the turbine rotor's reaction force to the engine casing, which is then transmitted to the engine mounting section. The connection structure between the support plate on the load-bearing support and the engine casing is particularly important. Existing technology for the connection structure between the support plate and the engine casing mainly includes: The existing load-bearing support connection structure mainly includes: a fixing pin, a housing, and a support plate. The characteristic of this structure is that the pin is interference-fitted with the housing and the support plate. The support plate and the housing are connected by the pin, which can connect the two into a rigid integral structure. At the same time, the pin has a certain shear resistance, which can ensure the reliability and safety of the connection structure between the support and the housing.

[0003] The pins require an interference fit with the casing and support plate, making it difficult to disassemble the pins during engine disassembly, and sometimes even requiring destructive disassembly. Summary of the Invention

[0004] The present invention provides a connecting component, an engine, and a method of use to solve the problem that the pins need to be interference-fitted with the casing and support plate respectively, which makes it difficult to disassemble the pins when the engine is disassembled, and may even require destructive disassembly.

[0005] In a first aspect, the present invention provides a connection component, comprising: A connecting sleeve, wherein the connecting sleeve has a smooth inner hole section, and the connecting sleeve is adapted to be disposed in the boss of the casing; A connecting rod, comprising a connecting portion and a first limiting portion, the first limiting portion being adapted to contact a connecting sleeve, the outer diameter of the connecting portion being smaller than the inner diameter of the smooth inner hole section, and the end of the connecting portion facing away from the first limiting portion being adapted to connect with a support plate.

[0006] Beneficial effects: The end of the connecting part away from the first limiting part passes through the smooth inner section of the connecting sleeve and connects with the support plate. The first limiting part restricts the movement of the connecting sleeve. When disassembly is required, only the end of the connecting part needs to be separated from the support plate, and then the sleeve needs to be separated from the boss. Compared with the difficulty of disassembly caused by the interference fit between the pin and the housing and the support plate, the disassembly difficulty of this application is greatly reduced, making disassembly easier.

[0007] In one optional embodiment, the sleeve portion of the connecting sleeve is further provided with an internal thread section.

[0008] In one alternative embodiment, the end of the connecting portion away from the first limiting portion is provided with an external thread, which is adapted to the internal thread segment.

[0009] In one optional embodiment, the support plate is provided with an internal threaded hole, and the external thread of the connecting part is adapted to the internal threaded hole.

[0010] In one optional embodiment, the connecting sleeve further includes a second limiting part, which is connected to the sleeve part and is disposed between the first limiting part and the end face of the boss.

[0011] Secondly, the present invention also provides an engine comprising several sets of the above-described connecting components.

[0012] In an alternative embodiment, the system further includes a casing and a support plate, wherein the connecting sleeve passes through a first connecting hole in the boss and connects to a second connecting hole in the support plate.

[0013] In one optional embodiment, the sleeve portion of the connecting sleeve is interference-fitted with the first connecting hole, and the sleeve portion of the connecting sleeve is interference-fitted with the second connecting hole.

[0014] In one alternative embodiment, the inner diameter of the second connecting hole is larger than the inner diameter of the internal threaded hole of the support plate.

[0015] Thirdly, the present invention also provides a method of using a connecting component, wherein the end of the connecting part away from the first limiting part passes through the smooth inner section of the connecting sleeve and is connected to the support plate, and the first limiting part restricts the movement of the connecting sleeve. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the connection assembly, housing, and support plate according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a connecting sleeve of a connecting component according to an embodiment of the present invention; Figure 3 This is a schematic diagram of a connecting rod of a connecting component according to an embodiment of the present invention; Figure 4 This is a schematic diagram of a connecting component, housing, and support plate in the disassembly process according to an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached drawings: 1. Connecting assembly; 101. Connecting sleeve; 1011. Second limiting part; 1012. Smooth inner hole section; 1013. Internal thread section; 1014. Sleeve part; 102. Connecting rod; 1021. First limiting part; 1022. Rod body; 1023. End; 2. Casing; 201. Boss; 3. Support plate; 301. Internal thread hole; 4. Tool. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The following is combined Figures 1 to 4 The following describes embodiments of the present invention.

[0021] According to an embodiment of the present invention, a connecting assembly 1 is provided, comprising: a connecting sleeve 101 having a smooth inner hole section 1012 therein, the connecting sleeve 101 being adapted to be disposed within a boss 201 of a housing 2; and a connecting rod 102 including a connecting portion and a first limiting portion 1021, the first limiting portion 1021 being adapted to contact the connecting sleeve 101, the outer diameter of the connecting portion being smaller than the inner diameter of the smooth inner hole section 1012, and the end 1023 of the connecting portion facing away from the first limiting portion 1021 being adapted to be connected to a support plate 3.

[0022] The end 1023 of the connecting portion, which is away from the first limiting portion 1021, passes through the smooth inner section of the connecting sleeve 101 and connects to the support plate 3. The first limiting portion 1021 restricts the movement of the connecting sleeve 101. In this embodiment, as... Figure 1 As shown, the first limiting part 1021 restricts the connecting sleeve 101 and the boss 201 along... Figure 1 The movement in the Y direction allows for easy disassembly. When disassembly is required, only the end 1023 of the connecting part needs to be separated from the support plate 3, and then the sleeve needs to be separated from the boss 201. Compared to the difficulty of disassembly caused by the interference fit between the pin and the housing 2 and the support plate 3, the disassembly difficulty of this application is greatly reduced, making disassembly easier. It should be noted that the connecting sleeve 101 in this embodiment is equivalent to the "pin" described in the background art.

[0023] In one embodiment, such as Figure 1 , Figure 2As shown, the sleeve portion 1014 of the connecting sleeve 101 is also provided with an internal thread section 1013, which restricts the connecting rod 102 from sliding out of the connecting sleeve 101.

[0024] In one embodiment, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the end 1023 of the connecting portion away from the first limiting portion 1021 is provided with an external thread, which is adapted to the internal thread section 1013. The internal thread section 1013 prevents the end 1023 of the first limiting portion 1021 from being shaken out of the connecting sleeve 101 during vibration. In this embodiment, the connecting portion also includes a rod 1022, the outer diameter of which is smaller than the inner diameter of the internal thread section 1013. The rod 1022 is smooth (no external thread is provided on the outer circumferential surface of the rod 1022), and the rod 1022 is connected to the end 1023 and the first limiting portion 1021 respectively.

[0025] In one embodiment, such as Figure 1 As shown, the support plate 3 is provided with an internal threaded hole 301. The external thread of the connecting part is adapted to the internal threaded hole 301 so that the connecting sleeve 101 is limited by the cooperation of the first limiting part 1021 and the internal threaded hole 301. The connection between the connecting part and the support plate 3 is realized by the adaptation of the connecting part and the internal threaded hole 301.

[0026] In one embodiment, such as Figure 1 , Figure 2 As shown, the connecting sleeve 101 also includes a second limiting part 1011, which is connected to the sleeve part 1014. The second limiting part 1011 is located between the first limiting part 1021 and the end face of the boss 201. The first limiting part 1021 and the second limiting part 1011 work together to limit the arbitrary shaking of the boss 201 of the housing 2.

[0027] According to an embodiment of the present invention, another aspect provides an engine comprising a plurality of the aforementioned connecting components 1.

[0028] In one embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, it also includes a casing 2 and a support plate 3. The connecting sleeve 101 passes through the first connecting hole of the boss 201 and connects to the second connecting hole of the support plate 3. The connecting sleeve 101 connects to the boss 201 and the support plate 3 respectively.

[0029] In one embodiment, such as Figure 1 , Figure 2 and Figure 3As shown, the sleeve portion 1014 of the connecting sleeve 101 is interference-fitted with the first connecting hole, and the sleeve portion 1014 of the connecting sleeve 101 is interference-fitted with the second connecting hole. That is, the outer peripheral surface of the sleeve portion 1014 is interference-fitted with the inner peripheral wall of the first connecting hole and the inner peripheral wall of the second connecting hole, respectively, so as to realize the fixed connection of the sleeve portion 1014 with the boss 201 and the support plate 3, respectively. The sleeve portion 1014 bears the shear force generated by the misalignment of the boss 201 and the support plate 3, forming the boss 201 and the support plate 3 into a rigid integral structure, ensuring the reliability and safety of the connection between the support plate 3 and the casing 2.

[0030] In one embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the inner diameter of the second connecting hole is larger than the inner diameter of the internal threaded hole 301 of the support plate 3, so that the second connecting hole and the internal threaded hole 301 form a countersunk hole shape.

[0031] According to an embodiment of the present invention, in another aspect, a method of using the connecting component 1 is also provided, comprising the following steps: (1) During the process, first align the center axis of the first connecting hole of the boss 201 with the center axis of the second connecting hole of the support plate 3, and then place the sleeve portion 1014 of the connecting sleeve 101 as follows: Figure 1 As shown, the first connecting hole and the second connecting hole are inserted sequentially until the end face of the second limiting part 1011 is in contact with the end face of the boss 201. Finally, the end 1023 of the connecting rod 102 is inserted sequentially into the internal thread section 1013 and the smooth internal hole section 1012, so that the external thread of the end 1023 is threadedly connected to the internal thread hole 301, until the end faces of the second limiting part 1011 and the first limiting part 1021 are in contact. (2) During use, the connecting sleeve 101 and the connecting rod 102 work together to keep the connecting sleeve 101 fixed between the connecting rod 102 and the support plate 3, ensuring that the engine will not loosen due to external forces during operation and improving the reliability of the connection. (3) During the disassembly process, such as Figure 4 As shown, the connecting rod 102 is separated from the internal threaded hole 301, and the connecting rod 102 is retracted into the smooth inner hole section 1012. The connecting sleeve 101 is unloaded with the help of the tool 4, so that the connecting sleeve body is separated from the casing 2 and the support plate 3 respectively. Then the connecting rod 102 and the connecting sleeve 101 are separated.

[0032] The connecting component 1 provided by the present invention has the following advantages: (1) The end 1023 of the connecting part away from the first limiting part 1021 passes through the smooth inner section of the connecting sleeve 101 and is connected to the support plate 3. The first limiting part 1021 restricts the movement of the connecting sleeve 101. In this embodiment, as shown in the figure... Figure 1As shown, the first limiting part 1021 restricts the connecting sleeve 101 and the boss 201 along... Figure 1 The movement in the Y direction, when disassembly is required, only the end 1023 of the connecting part needs to be separated from the support plate 3, and then the sleeve and the boss 201 need to be separated. Compared with the problem of disassembly difficulty caused by the interference fit between the pin and the housing 2 and the support plate 3 respectively, the disassembly difficulty of this application is greatly reduced and it is easy to disassemble; (2) The connecting assembly 1 formed by the connecting sleeve 101 and the connecting rod 102 ensures the stability of load transmission between the two, and the connecting sleeve 101 and the connecting rod 102 have shear resistance and can withstand the shear force caused by the deformation incoordination of the housing 2 and the support plate 3, ensuring the reliability and safety of the connection between the support plate 3 and the housing 2; (3) The connecting sleeve 101 is a hollow structure, The connecting rod 102 first passes through the internal thread section 1013, then through the smooth inner hole section 1012, and then connects to the internal thread hole 301 of the support plate 3, so that the connecting rod 102 will not loosen due to external force during engine operation, further improving the reliability of the connection; (4) During disassembly, the connecting rod 102 is separated from the internal thread hole 301, so that the connecting rod 102 is retracted into the smooth inner hole section 1012, and the connecting sleeve 101 is unloaded with the help of the tool 4, so that the connecting sleeve is separated from the casing 2 and the support plate 3 respectively, and then the connecting rod 102 and the connecting sleeve 101 are separated, which cleverly solves the problem of disassembly difficulties caused by the interference fit between the traditional pin and the casing 2 and the support plate 3 respectively.

[0033] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A connection component, characterized in that, include: A connecting sleeve (101) is provided with a smooth inner hole section (1012) and the connecting sleeve (101) is adapted to be disposed in the boss (201) of the casing (2); The connecting rod (102) includes a connecting part and a first limiting part (1021). The first limiting part (1021) is adapted to contact the connecting sleeve (101). The outer diameter of the connecting part is smaller than the inner diameter of the smooth inner hole section (1012). The end (1023) of the connecting part away from the first limiting part (1021) is adapted to connect with the support plate (3).

2. The connection component according to claim 1, characterized in that, The sleeve portion (1014) of the connecting sleeve (101) is also provided with an internal thread section (1013).

3. The connection component according to claim 2, characterized in that, The end (1023) of the connecting part away from the first limiting part (1021) is provided with an external thread, which is adapted to the internal thread section (1013).

4. The connecting component according to claim 3, characterized in that, The support plate (3) is provided with an internal threaded hole (301), and the external thread of the connecting part is adapted to the internal threaded hole (301).

5. The connecting component according to claim 3, characterized in that, The connecting sleeve (101) further includes a second limiting part (1011), which is connected to the sleeve part (1014). The second limiting part (1011) is located between the end face of the first limiting part (1021) and the boss (201).

6. An engine, characterized in that, It includes several groups of connection components as described in any one of claims 1-5.

7. The engine according to claim 6, characterized in that, It also includes a casing (2) and a support plate (3), wherein the connecting sleeve (101) passes through the first connecting hole of the boss (201) and connects to the second connecting hole of the support plate (3).

8. The engine according to claim 7, characterized in that, The sleeve portion (1014) of the connecting sleeve (101) is interference-fitted with the first connecting hole, and the sleeve portion (1014) of the connecting sleeve (101) is interference-fitted with the second connecting hole.

9. The engine according to claim 8, characterized in that, The inner diameter of the second connecting hole is larger than the inner diameter of the internal threaded hole (301) of the support plate (3).

10. A method of using a connecting component, for using the connecting component of claim 1, characterized in that, The end (1023) of the connecting part away from the first limiting part (1021) passes through the smooth inner section of the connecting sleeve (101) and connects with the support plate (3). The first limiting part (1021) restricts the movement of the connecting sleeve (101).

Images