Quick dismounting and mounting device for aero-engine and packaging box

Abstract

The utility model relates to the field of aero-engine packaging, in particular to a quick dismounting and mounting device for an aero-engine and a packaging box, which comprises a shaft seat, a pin shaft and a taper pin, the shaft seat is provided with an axially through circular groove, and the circular groove is used for accommodating the pin shaft; a first conical hole is formed in the radial side wall of the pin shaft, and a second conical hole is formed in the corresponding position of the side wall of the shaft seat; the taper pin penetrates through the first taper hole and the second taper hole in an interference fit mode, the pin shaft is axially fixed in the circular groove of the shaft seat, and the problem that an existing connecting structure of the aero-engine installation joint and the installation support in the packaging box does not have the rapid disassembly and assembly function is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of aero-engine packaging, and particularly relates to a quick dismounting and mounting device for an aero-engine and a packaging box. BACKGROUND

[0002] The mounting joint mechanism bears the main load of the aero-engine and is an important component for transmitting the thrust of the aero-engine to the aircraft. In the flight process of the aircraft, various loads are transmitted to the engine through the mounting joint mechanism. In short, the mounting joint mechanism uses a pin shaft to pass through the side wall of the aero-engine and the mounting hole on the aircraft to position the engine, so the mounting joint is also used to position the engine during transportation.

[0003] At present, the aero-engine is mainly supported by four support points, i.e., the main mounting joint and the auxiliary mounting joint, during transportation. The aero-engine is connected to the support frame on the packaging box through the four support points. For example, a clamping assembly for connecting the aero-engine and the support frame on the packaging box is disclosed in Chinese Patent No. CN114955231A. The clamping assembly includes a first clamping ring having a recess, a second clamping ring, and a fastener. The recesses of the two clamping rings are opposite to form a mounting hole. The fastener uses at least four M16 or larger screws to detachably threadedly connect the first clamping ring and the second clamping ring together.

[0004] The defects are as follows: After the aero-engine is transported to the destination, the whole engine needs to be assembled. When the existing support points are disassembled, it takes at least 15 seconds or more to remove a single screw (not including the time for conversion and removal). It takes at least one minute to remove four screws from a single support point, and it takes at least four minutes to remove 16 screws from four support points. Four minutes may seem short, but it is crucial for the maintainability and supportability of military products. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a quick dismounting and mounting device for an aero-engine and a packaging box to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides a vibration isolator applied to the transportation of an aero-engine, which comprises an axle seat, a pin shaft, and a conical pin.

[0007] The axle seat is provided with a circular groove passing through in the axial direction, and the circular groove is used to accommodate the pin shaft.

[0008] The radial side wall of the pin shaft is provided with a first conical hole, and the side wall of the axle seat is provided with a second conical hole at the corresponding position.

[0009] The conical pin is inserted into the first conical hole and the second conical hole in an interference fit mode, the pin shaft is axially fixed in the circular groove of the shaft seat, and the insertion direction of the conical pin is from the outside to the inside of the shaft seat.

[0010] As a further improvement of the technical solution, the outer side wall of the shaft seat is provided with a U-shaped locking groove, the second conical hole is located at the center of the bottom of the locking groove, a pair of limiting blocks are symmetrically arranged on the two sides of the locking groove, a clamping groove is arranged in the limiting block, a radially extending baffle is symmetrically arranged on the tail of the conical pin, when the conical pin is completely inserted, the baffle is embedded in the clamping groove of the limiting block by rotating the conical pin by 90 degrees, so that the axial displacement and the circumferential rotation of the conical pin are limited.

[0011] As a further improvement of the technical solution, the pin shaft is a T-shaped pin shaft, and the diameter of the head of the pin shaft is greater than the diameter of the circular groove.

[0012] As a further improvement of the technical solution, the bottom of the shaft seat is symmetrically provided with at least two mounting holes, the mounting holes are threaded holes, and the shaft seat is fixed to the packaging box base body through bolts.

[0013] As a further improvement of the technical solution, two oil grooves are arranged on the inner wall of the circular groove in parallel along the axial direction, which are used for lubricating the contact surface of the pin shaft and the circular groove, the extension direction of the oil groove is perpendicular to the opening direction of the locking groove, and the end of the oil groove terminates at the edge of the locking groove.

[0014] Compared with the prior art, the device has the following beneficial effects:

[0015] 1. By limiting the interference fit mode of the first conical hole, the second conical hole and the conical pin, the self-locking effect of the conical pin after insertion is ensured, the axial fixation of the pin shaft can be realized without additional tools, and the disassembly and assembly efficiency is effectively improved.

[0016] 2. The tail of the conical pin is provided with a baffle, which is embedded in the clamping groove of the limiting block after being inserted and rotated by 90 degrees, so that the axial displacement and the circumferential rotation are limited in two directions, the loosening caused by transportation vibration is avoided, and the stability of the device is significantly improved.

[0017] 3. Compared with the traditional technology, the number of parts required by the device as a whole is reduced, and the failure rate and maintenance cost of the device are greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a perspective view of the overall structure of the utility model;

[0019] Figure 2 It is an exploded view of the overall structure of the utility model;

[0020] Figure 3 It is a cross-sectional right view of the overall structure of the utility model;

[0021] Figure 4 The partial structure of the utility model is a top view.

[0022] The meanings of the various reference numerals in the drawings are as follows:

[0023] 1, axle seat; 11, round groove; 111, oil groove; 12, second conical hole; 13, locking groove; 14, limiting block; 15, mounting hole; 2, pin shaft; 21, first conical hole; 3, conical pin; 31, baffle. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without making creative efforts fall within the protection scope of the utility model.

[0025] In the description of the utility model, it is understood that the orientations or position relationships indicated by the terms "upper", "lower", "bottom", "center", "vertical" and the like are the orientations or position relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0026] In addition, in the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly and specifically limited.

[0027] Please refer to Figures 1-3 As shown in the figure, the axle seat 1 is integrally formed, the bottom is rectangular, the middle position is a convex semicircular block, the semicircular block is provided with a radial through round groove 111, the round groove 111 is used for accommodating the pin shaft 2, the radial side wall of the pin shaft 2 is provided with a first conical hole 21, the sidewall of the axle seat 1 is provided with a second conical hole 12 leading to the round groove 111, the conical pin 3 penetrates the first conical hole 21 and the second conical hole 12 in an interference fit manner, axially fixes the pin shaft 2 in the round groove 11 of the axle seat 1, and the insertion direction of the conical pin 3 is from the outside to the inside of the axle seat 1.

[0028] Please refer to Figures 1-3As shown, further, the outer side wall of the shaft seat 1 is provided with a U-shaped locking groove 13, the second tapered hole 12 is located at the center of the bottom of the locking groove 13, a pair of limiting blocks 14 are symmetrically arranged on both sides of the locking groove 13, the limiting blocks 14 are provided with clamping grooves, the tail of the conical pin 3 is symmetrically provided with radially extending blocking pieces 31, when the conical pin 3 is completely inserted, the conical pin 3 is rotated by 90 degrees, so that the blocking pieces 31 are embedded in the clamping grooves of the limiting blocks 14, thereby limiting the axial displacement and circumferential rotation of the conical pin 3.

[0029] As shown in the drawings, Figures 1-3 As shown, further, the pin shaft 2 is a T-shaped pin shaft, the diameter of the head of the pin shaft 2 is greater than the diameter of the circular groove 11.

[0030] As shown in the drawings, Figure 1 As shown, further, the bottom of the shaft seat 1 is symmetrically provided with four mounting holes 15, the mounting holes 15 are threaded holes, and the shaft seat 1 is fixed to the base body of the packaging box through bolts.

[0031] As shown in the drawings, Figures 1-3 As shown, further, the inner wall of the circular groove 11 is provided with two oil grooves 111 in parallel along the axial direction, which are used for lubricating the contact surface between the pin shaft 2 and the circular groove 11, the extension direction of the oil grooves 111 is perpendicular to the opening direction of the locking groove 13, and the end of the oil grooves 111 terminates at the edge of the locking groove 13.

[0032] In summary, the working principle of the present application is as follows:

[0033] After applying lubricating grease on the oil grooves 111 in the circular groove 11, the pin shaft 2 is inserted into the circular groove 11 in the shaft seat 1, and the first tapered hole 21 on the pin shaft 2 is aligned with the second tapered hole 12 on the shaft seat 1, then the conical pin 3 is sequentially penetrated through the first tapered hole 21 and the second tapered hole 12 in an interference fit manner, thereby axially fixing the pin shaft 2 in the circular groove 11 of the shaft seat 1, and ensuring that the limiting blocks 14 on the shaft seat 1 and the blocking pieces 31 on the conical pin 3 do not interfere with each other during the insertion process, then the conical pin 3 is appropriately pressed and rotated horizontally by 90 degrees, so that the blocking pieces 31 are embedded in the locking groove 13 below the limiting blocks 14, finally, the fixing bolts are screwed into the mounting holes 15 for fixation.

[0034] The basic principle, main features and advantages of the present application have been shown and described. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, the above embodiments and descriptions in the specification are only preferred examples of the present application, and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An aircraft engine quick release mounting arrangement with a packing box, characterized in that: The application relates to a shaft seat (1), a pin shaft (2) and a conical pin (3). The shaft seat (1) is provided with a circular groove (11) penetrating in the axial direction, which is used for accommodating the pin shaft (2). The radial side wall of the pin shaft (2) is provided with a first conical hole (21), and the side wall of the shaft seat (1) is provided with a second conical hole (12) at a corresponding position. The conical pin (3) penetrates the first conical hole (21) and the second conical hole (12) in an interference fit mode, axially fixes the pin shaft (2) in the circular groove (11) of the shaft seat (1), and the insertion direction of the conical pin (3) is from the outside to the inside of the shaft seat (1).

2. An aircraft engine quick release mounting arrangement according to claim 1, wherein: The outer side wall of the shaft seat (1) is provided with a U-shaped locking groove (13), the second conical hole (12) is located at the center of the bottom of the locking groove (13), a pair of limiting blocks (14) are symmetrically arranged on the two sides of the locking groove (13), the limiting blocks (14) are provided with clamping grooves, the tail of the conical pin (3) is symmetrically provided with radially extending blocking pieces (31), when the conical pin (3) is completely inserted, the conical pin (3) is rotated by 90 degrees, the blocking pieces (31) are embedded in the clamping grooves of the limiting blocks (14), and the axial displacement and the circumferential rotation of the conical pin (3) are limited.

3. An aircraft engine quick release mounting device according to claim 1 wherein: The pin shaft (2) is a T-shaped pin shaft, and the diameter of the head is larger than that of the circular groove (11).

4. An aircraft engine quick release mounting arrangement according to claim 1 or claim 3, wherein: The bottom of the shaft seat (1) is symmetrically provided with at least two mounting holes (15), the mounting holes (15) are threaded holes, and the shaft seat (1) is fixed to a packaging box base body through bolts.

5. An aircraft engine quick release mounting assembly according to claim 2 wherein: The inner wall of the circular groove (11) is provided with two oil grooves (111) parallel in the axial direction, which are used for lubricating the contact surface between the pin shaft (2) and the circular groove (11), the extension direction of the oil groove (111) is perpendicular to the opening direction of the locking groove (13), and the end of the oil groove (111) terminates at the edge of the locking groove (13).

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