Device for assembling spiral check ring and suspension wing shaft sealing guide cylinder of aero-engine

Abstract

The utility model discloses a device for assembling an aero-engine spiral check ring and a suspension wing shaft sealing guide cylinder, and belongs to the technical field of aviation assembly. The inner end of the supporting sleeve is inserted into the suspension wing shaft sealing guide cylinder in a clearance sliding mode, and the outer end of the supporting sleeve is detachably and fixedly connected with the suspension wing shaft sealing guide cylinder through a fixing mechanism. A push disc is slidably inserted into the inner gap of the inner end of the supporting sleeve, the middle of the supporting sleeve is in threaded connection with a screw, the inner end of the screw is rotatably inserted into one end of the push disc, and the outer end of the screw extends to the outer side of the suspension wing shaft sealing guide cylinder. A spiral check ring containing groove is formed in the end portion of the inner end of the supporting sleeve, and the spiral check ring containing groove and the suspension wing shaft lip-shaped sealing ring are arranged correspondingly. According to the spiral check ring assembling tool, radial deflection in the spiral check ring assembling process is effectively eliminated, the problems of surface scratching and positioning misalignment caused by traditional manual assembling are thoroughly solved, the spiral check ring assembling efficiency under the complex working condition is improved, and the product percent of pass is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of aviation engine helical baffle ring and suspension wing shaft sealing guide cylinder assembly device, belong to aviation assembly technical field. BACKGROUND

[0002] In prior art, when helical baffle ring is assembled to the fixed groove of suspension wing shaft sealing guide cylinder, operator needs to hold helical baffle ring and place it into the inner hole of guide cylinder in advance, then push it along the axial direction of guide cylinder by means of core shaft tool, and finally it is clamped into the helical baffle ring fixed groove of suspension wing shaft lip-shaped sealing ring. However, the traditional assembly process has the following significant defects:

[0003] 1, because the guide cylinder structure has the feature of long axial dimension, it causes that operator needs to work in the interior of guide cylinder when pushing baffle ring, which results in limited operation space, inconvenient working posture, increased assembly difficulty and labor intensity;

[0004] 2, the edge of helical baffle ring will directly contact with the inner wall of guide cylinder during pushing process, and because of lack of guiding and positioning mechanism, baffle ring is easy to produce radial displacement, which causes mechanical damage such as scratch and scraping on the inner surface of guide cylinder, seriously affecting the sealing performance and structural integrity of guide cylinder;

[0005] 3, manual operation requires higher personnel skills, and the assembly efficiency is low, and it is difficult to ensure the accurate matching of baffle ring and fixed groove, which results in poor product assembly quality stability and high rate of unqualified products. CONTENT OF UTILITY MODEL

[0006] To solve the problems in the background art, the utility model provides a kind of aviation engine helical baffle ring and suspension wing shaft sealing guide cylinder assembly device.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a kind of aviation engine helical baffle ring and suspension wing shaft sealing guide cylinder assembly device, including push disc, support sleeve, screw rod and fixed mechanism;The inner end gap of support sleeve is slidably inserted into suspension wing shaft sealing guide cylinder, and the outer end of support sleeve is detachably fixedly connected with suspension wing shaft sealing guide cylinder by fixed mechanism;The inner gap of support sleeve inner end is slidably inserted with push disc, and the middle part of support sleeve is screw-threadedly connected with screw rod, the inner end of screw rod is rotatably inserted with one end of push disc, and the outer end of screw rod extends to the outside of suspension wing shaft sealing guide cylinder;The end of the inner end of support sleeve is provided with helical baffle ring placing groove, and the helical baffle ring placing groove is correspondingly provided with suspension wing shaft lip-shaped sealing ring.

[0008] The supporting sleeve comprises an inner cylinder, a connecting plate, an outer cylinder and a fixing plate arranged coaxially in sequence; the inner cylinder is slidably inserted into the sealing guide cylinder of the suspension wing shaft, the end of the inner side wall of the inner cylinder is provided with a spiral retaining ring placing groove, a push disc is slidably inserted into the inner cylinder between the spiral retaining ring placing groove and the connecting plate; the middle part of the connecting plate is provided with a threaded hole, the threaded hole is threadedly connected with a screw rod, the outer cylinder is coaxially sleeved on the outer side of the screw rod, and the fixing plate is detachably fixedly connected with the sealing guide cylinder of the suspension wing shaft through a fixing mechanism.

[0009] The contact end face of the spiral retaining ring placing groove and the spiral retaining ring is provided with an elastic buffer layer.

[0010] The contact end face of the push disc and the spiral retaining ring is provided with a buffer pad, and the surface of the buffer pad is provided with an anti-skid grid pattern.

[0011] The fixing mechanism comprises a pressing plate and a nut; the fixing plate and the sealing guide cylinder of the suspension wing shaft are provided with a plurality of through holes arranged one by one in correspondence, the vertical plate of the pressing plate is tightly arranged on the end face of the sealing guide cylinder of the suspension wing shaft, the horizontal plate of the pressing plate is inserted into the corresponding through hole and is threadedly connected with the corresponding nut, and the nut is tightly arranged on the end face of the fixing plate.

[0012] The fixing plate is provided with a plurality of lightening holes.

[0013] The outer side of the screw rod is vertically inserted with a cylindrical pin.

[0014] Both end faces of the push disc are provided with lightening holes, and the middle part of the push disc is provided with a insertion hole, which is rotationally connected with the inner end of the screw rod.

[0015] The outer wall of the push disc is provided with a guide flange, and the inner wall of the inner cylinder is correspondingly provided with a guide groove.

[0016] Compared with the prior art, the utility model has the advantages of:

[0017] The utility model realizes the quick positioning and stable installation of the spiral retaining ring in the sealing guide cylinder of the suspension wing shaft through the cooperation of the supporting sleeve and the fixing mechanism, converts the rotary motion into accurate axial thrust through the threaded connection structure of the push disc and the screw rod, effectively eliminates the radial deflection of the spiral retaining ring in the assembly process in combination with the guide positioning function of the spiral retaining ring placing groove, ensures that the thrust direction is strictly consistent with the guide cylinder axis through the anti-rotation design of the guide flange of the outer wall of the push disc and the guide groove of the inner cylinder, and avoids the rigid contact of the retaining ring and the inner wall of the guide cylinder while realizing the uniform force application through the elastic buffer layer of the spiral retaining ring placing groove and the anti-skid grid pattern buffer pad of the end face of the push disc, so that the surface scratch and positioning misalignment problems caused by the traditional manual assembly are completely solved; the overall structure considers the light weight and assembly adaptability through the modular design (detachable guide sleeve and lightening hole), improves the spiral retaining ring assembly efficiency under complex working conditions, and improves the product qualification rate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 yes Figure 1 AA section view;

[0020] Figure 3 yes Figure 1 A schematic diagram showing the installation at point B;

[0021] Figure 4 This is a schematic diagram of the push plate structure;

[0022] Figure 5 This is a schematic diagram of the support sleeve structure;

[0023] Figure 6 yes Figure 5 CC section view;

[0024] Figure 7 This is a schematic diagram of the screw's structure. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0026] A device for assembling a spiral retaining ring and a wing shaft sealing guide cylinder for an aircraft engine includes a push plate 1, a support sleeve 2, a screw 6, and a fixing mechanism. The inner end of the support sleeve 2 is slidably inserted into the wing shaft sealing guide cylinder 10 with a small clearance of 0.02-0.04mm, allowing free sliding. The outer end of the support sleeve 2 is detachably fixed to the wing shaft sealing guide cylinder 10 via the fixing mechanism. The fixing mechanism is used to fix the support sleeve 2 and guide the movement of the push plate 1. The push plate 1 is slidably inserted into the inner end of the support sleeve 2 with a small clearance of 0.02-0.04mm, allowing free sliding. The middle part of the support sleeve 2 is threadedly connected to the screw 6. The inner end of the screw 6 is rotatably inserted into one end of the push plate 1, and the outer end of the screw 6 extends to the outside of the wing shaft sealing guide cylinder 10. The inner end of the support sleeve 2 is provided with a spiral retaining ring placement groove 18, which is correspondingly arranged with the wing shaft lip seal 8. The spiral retaining ring placement groove 18 is used for the assembly positioning guidance and pushing of the spiral retaining ring 9.

[0027] The sleeve 2 comprises an inner cylinder 12, a connecting plate 13, an outer cylinder 14 and a fixing plate 15 which are coaxially arranged in sequence; the inner cylinder 12 is gap slidingly inserted into the suspension wing shaft sealing guide cylinder 10, the end of the inner side wall of the inner cylinder 12 is provided with a spiral retainer ring placing groove 18 along the circumferential direction, the inner cylinder 12 is gap slidingly inserted into the push disc 1, the push disc 1 is located between the spiral retainer ring placing groove 18 and the connecting plate 13; the middle part of the connecting plate 13 is provided with a threaded hole 17, the threaded hole 17 is threadedly screwed with the screw rod 6; the outer cylinder 14 is coaxially sleeved on the outer side of the screw rod 6, and the fixing plate 15 is detachably fixedly connected with the suspension wing shaft sealing guide cylinder 10 through a fixing mechanism.

[0028] The contact end face of the spiral retainer ring placing groove 18 and the spiral retainer ring 9 is provided with an elastic buffer layer, the elastic buffer layer is made of polytetrafluoroethylene material, the thickness is 0.1-0.3mm, and the elastic buffer layer can prevent the surface damage of the spiral retainer ring 9.

[0029] The contact end face of the push disc 1 and the spiral retainer ring 9 is provided with an annular buffer pad, the buffer pad is made of silicone rubber material with a Shore hardness of 60-70, the thickness is 1.5-2.5mm, and the surface is provided with an anti-skid grid pattern.

[0030] The fixing mechanism comprises a pressing plate 3 and a nut 5; the fixing plate 15 and the suspension wing shaft sealing guide cylinder 10 are provided with a plurality of through holes 16 which are arranged one by one in correspondence, the vertical plate of the pressing plate 3 is tightly arranged on the end face of the suspension wing shaft sealing guide cylinder 10, the horizontal plate of the pressing plate 3 is inserted into the corresponding through hole 16 and is threadedly screwed with the corresponding nut 5, the nut 5 is tightly arranged on the end face of the fixing plate 15, and the nut 5 is provided with a gasket 4 between the fixing plate 15 to avoid damaging the fixing plate 15 by the nut 5.

[0031] The fixing plate 15 is provided with a plurality of weight-reducing holes 21 which penetrate through the thickness direction thereof along the circumferential direction.

[0032] The outer side of the screw rod 6 is vertically inserted into a cylindrical pin 7, facilitating the rotation of the screw rod 6.

[0033] Both end faces of the push disc 1 are provided with weight-reducing holes two 19, and the middle part of the push disc 1 is provided with a insertion hole 20 which is rotationally inserted into the inner end of the screw rod 6.

[0034] The outer wall of the push disc 1 is provided with a guide flange, and the inner wall of the inner cylinder 12 is correspondingly provided with a guide groove, the guide flange and the guide groove form an anti-rotation cooperation structure, and the movement track of the push disc 1 is ensured to be accurate.

[0035] When the utility model is used, the stretched spiral retaining ring 9 is pre-wound into the spiral retaining ring placing groove 18 of the support sleeve 2, the support sleeve 2 is fixed in the suspension wing shaft sealing guide cylinder 10 through the fixing mechanism, the cylindrical pin 7 drives the screw rod 6 to rotate, then under the action of the support sleeve 2, the arc head structure of the screw rod 6 pushes the push disc 1, then axial power input is provided for the spiral retaining ring 9, the push disc 1 pushes the spiral retaining ring 9, the spiral retaining ring 9 slides into the spiral retaining ring fixing groove 11 of the suspension wing shaft lip-shaped sealing ring 8 along the front end chamfer of the support sleeve 2, and the limiting and fixing of the suspension wing shaft lip-shaped sealing ring 8 are completed.

[0036] It is apparent for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent conditions of the claims should be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims.

[0037] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A device for assembling a spiral retaining ring and a suspension shaft sealing guide cylinder for an aircraft engine, characterized in that: The device includes a push plate (1), a support sleeve (2), a screw (6), and a fixing mechanism. The inner end of the support sleeve (2) is slidably inserted into the wing shaft sealing guide cylinder (10) with a clearance. The outer end of the support sleeve (2) is detachably fixed to the wing shaft sealing guide cylinder (10) through the fixing mechanism. The push plate (1) is slidably inserted into the inner end of the support sleeve (2). The middle part of the support sleeve (2) is threadedly connected to the screw (6). The inner end of the screw (6) is rotatably inserted into one end of the push plate (1). The outer end of the screw (6) extends to the outside of the wing shaft sealing guide cylinder (10). The inner end of the support sleeve (2) is provided with a spiral retaining ring placement groove (18). The spiral retaining ring placement groove (18) is correspondingly set with the wing shaft lip seal (8).

2. The assembly device for an aero-engine spiral retaining ring and a suspension shaft sealing guide cylinder according to claim 1, characterized in that: The support sleeve (2) includes an inner cylinder (12), a connecting plate (13), an outer cylinder (14), and a fixing plate (15) arranged coaxially in sequence; the inner cylinder (12) is slidably inserted into the wing shaft sealing guide cylinder (10) with a gap, and the end of the inner wall of the inner cylinder (12) is provided with a spiral retaining ring placement groove (18), and a push plate (1) is slidably inserted into the inner cylinder (12) with a gap, and the push plate (1) is located between the spiral retaining ring placement groove (18) and the connecting plate (13); the middle part of the connecting plate (13) is provided with a threaded hole (17), and the threaded hole (17) is threadedly connected to the screw (6); the outer cylinder (14) is coaxially ring-fitted on the outside of the screw (6), and the fixing plate (15) and the wing shaft sealing guide cylinder (10) are detachably fixedly connected by a fixing mechanism.

3. The assembly device for an aero-engine spiral retaining ring and a suspension shaft sealing guide cylinder according to claim 2, characterized in that: The contact end face between the spiral retaining ring placement groove (18) and the spiral retaining ring (9) is provided with an elastic buffer layer.

4. The assembly device for an aero-engine spiral retaining ring and a suspension shaft sealing guide cylinder according to claim 2, characterized in that: The contact end face of the push plate (1) and the spiral retaining ring (9) is provided with a buffer pad, and the surface of the buffer pad is provided with an anti-slip mesh pattern.

5. The assembly device for an aero-engine spiral retaining ring and a suspension shaft sealing guide cylinder according to claim 3 or 4, characterized in that: The fixing mechanism includes a pressure plate (3) and a nut (5); the pressure plate (3) is an L-shaped structural plate, and the fixing plate (15) and the suspension shaft sealing guide cylinder (10) are provided with a plurality of through holes (16) that correspond one-to-one. The vertical plate of the pressure plate (3) is pressed and set on the end face of the suspension shaft sealing guide cylinder (10), and the horizontal plate of the pressure plate (3) is inserted into the corresponding through hole (16) and threadedly connected with the corresponding nut (5). The nut (5) is pressed and set on the end face of the fixing plate (15).

6. The assembly device for an aero-engine spiral retaining ring and a suspension shaft sealing guide cylinder according to claim 5, characterized in that: The fixing plate (15) is provided with multiple weight reduction holes (21).

7. The assembly device for an aero-engine spiral retaining ring and a suspension shaft sealing guide cylinder according to claim 1, characterized in that: A cylindrical pin (7) is vertically inserted into the outer side of the screw (6).

8. The assembly device for an aero-engine spiral retaining ring and a suspension shaft sealing guide cylinder according to claim 2, characterized in that: The push plate (1) has two weight reduction holes (19) on both ends, and a plug hole (20) is provided in the middle of the push plate (1). The plug hole (20) is rotatably connected to the inner end of the screw (6).

9. The assembly device for an aero-engine spiral retaining ring and a suspension shaft sealing guide cylinder according to claim 8, characterized in that: The outer wall of the push plate (1) is provided with a guide flange, and the inner wall of the inner cylinder (12) is provided with a corresponding guide groove.

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