Bearing outer ring compression nut locking device and locking method

Abstract

The application discloses a bearing outer ring compression nut locking piece locking device and a locking method, and belongs to the technical field of aero-engine assembly, which comprises a first locking assembly, the first locking assembly comprises a first mounting seat for being fixed on a part to be machined and a hook plate arranged on the first mounting seat, a hook tip part for extending into a gap between a bearing outer ring compression nut locking piece and a bearing is formed on the hook plate; the hook plate and the first mounting seat are in sliding fit, the hook plate moves along the part to be machined in the axial direction, the hook tip part hooks the inner tooth of the bearing outer ring compression nut locking piece, and the inner tooth of the bearing outer ring compression nut locking piece is bent. The application can reduce the direct contact and scraping of the bearing and the nut surface in the process of hooking the inner tooth of the locking piece, and effectively protects the bearing and the nut.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of an aero-engine assembly, in particular to a bearing outer ring compression nut lock plate locking device and a locking method. BACKGROUND

[0002] An aero-engine output shaft assembly is a key part for connecting various components in the engine, and plays an important role in power transmission, shock absorption and axial load reduction. A certain type of engine output shaft is provided with a double inner half-circle angular contact ball bearing, and the inner and outer rings of the bearing need to be limited after assembly to prevent axial movement. A nut is usually used for compression, and a lock plate is used for insurance to prevent the nut from loosening.

[0003] During the assembly of the part, the bearing is first installed on the output shaft neck with interference and is compressed as a first part; then the first part is inserted into the bearing seat, the bearing outer ring is assembled to the bearing seat and is matched with the inner hole, and then the lock plate and the nut are installed in sequence, the nut is tightened to compress the bearing outer ring, and the lock plate is bent for insurance. Since the insurance position of the lock plate of the part is in the cavity formed by the output shaft and the inner hole of the bearing seat, the space is small and not easy to operate, and the traditional method is to use a straight upwarping and bending, which is easy to scratch the bearing and the nut. SUMMARY

[0004] The application provides a bearing outer ring compression nut lock plate locking device and a locking method to solve the technical problem that the bearing lock plate is easy to damage the bearing and the nut when being bent.

[0005] According to one aspect of the application, a bearing outer ring compression nut lock plate locking device and a locking method are provided, which include a first locking assembly, the first locking assembly including a first mounting seat for being fixed on a part to be processed and a hook plate provided on the first mounting seat, the hook plate being formed with a hook tip portion for extending into the gap between the bearing outer ring compression nut lock plate and the bearing; the hook plate and the first mounting seat are in sliding fit, so that the hook plate moves axially along the part to be processed to drive the hook tip portion to hook the inner teeth of the bearing outer ring compression nut lock plate and bend the inner teeth of the bearing outer ring compression nut lock plate.

[0006] Optionally, an end of the hook plate away from the hook tip portion is provided with a first connecting column in the axial direction of the part to be processed, the first mounting seat is provided with a first sliding groove, and the first connecting column is slidably arranged in the first sliding groove; the first connecting column or the hook plate is formed with a polygonal anti-rotation structure, and the first mounting seat is provided with an anti-rotation groove matched with the polygonal anti-rotation structure.

[0007] Optionally, the first mounting seat is provided with a first screw rod driving structure, and the first screw rod driving structure converts the input circumferential rotation power into a force for driving the hook plate to move axially along the part to be processed.

[0008] Optionally, the first screw driving structure comprises a first rotating seat, the first rotating seat is in threaded cooperation with the first connecting column, and the bottom of the first rotating seat is in abutment with the first mounting seat to limit the axial movement of the rotating seat.

[0009] Optionally, a jam nut is threadedly connected to the first mounting seat, the jam nut is arranged radially along the first connecting column, and the jam nut is in abutment with the side wall of the first connecting column to limit the radial movement of the first connecting column.

[0010] Optionally, the bearing outer ring compression nut lock plate locking device further comprises a second locking assembly, the second locking assembly comprises a second mounting seat for being fixed on the part to be machined and a pawl arranged on the second mounting seat; the pawl is in sliding cooperation with the second locking assembly to move the pawl in the radial direction of the part to be machined, so as to drive the pawl to extrude the inner tooth of the bearing outer ring compression nut lock plate and make the inner tooth of the bearing outer ring compression nut lock plate be bent.

[0011] Optionally, a second screw driving structure is arranged on the second mounting seat, the second screw driving structure converts the input circumferential rotation power into a force for driving the pawl to move in the radial direction of the part to be machined.

[0012] Optionally, a second sliding groove is arranged on the second mounting seat in the radial direction, a second connecting column is arranged on the pawl in the axial direction of the part to be machined, and the second connecting seat is slid in the second sliding groove.

[0013] Optionally, the second screw driving structure comprises a hinged bolt, one end of the hinged bolt is sleeved on the second connecting column, and the other end of the hinged bolt passes through the second connecting seat and is threadedly connected with a second rotating seat.

[0014] Optionally, an arc-shaped mounting groove is arranged on the first mounting seat and / or the second mounting seat, and a locking bolt for locking cooperation with the part to be machined is arranged in the arc-shaped mounting groove.

[0015] In summary, the present application has at least one of the following beneficial technical effects:

[0016] 1. By arranging the first locking assembly, the hook tip is specially inserted into the gap between the lock plate inner tooth and the bearing, the rotation torque is converted into axial movement force through threaded transmission, direct contact and scratching of the bearing and nut surface by traditional tools such as a flathead screwdriver or a knocking tool are avoided, the moving direction and angle of the hook plate are ensured to be accurate through the limiting screw, anti-rotation groove and sliding groove structure, part damage caused by operation deviation is prevented, in the process of hooking the lock plate inner tooth, force is only applied to the specific part of the lock plate, and the lock plate is bent through the method of gradual deformation, the impact on the surrounding parts caused by one-time strong operation is avoided, the force in the whole process is accurate and controllable, the bearing and nut are effectively protected, and thus the technical problem that the bearing and nut are easily damaged when the bearing lock plate is bent is solved.

[0017] Besides the above-mentioned objects, features and advantages, the present application has other objects, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which form a part of this application, are intended to provide further understanding of the application and are incorporated herein in

[0019] Figure 1 A schematic view of the first locking assembly and the part to be machined of the present application;

[0020] Figure 2 A schematic view of the structure of the first locking assembly of the present application;

[0021] Figure 3 A schematic view of the structure of the hook plate of the present application;

[0022] Figure 4 A schematic view of the second locking assembly and the part to be machined of the present application;

[0023] Figure 5 A schematic view of the structure of the second locking assembly of the present application;

[0024] Figure 6 A schematic view of the structure of the claw of the present application.

[0025] LEGEND

[0026] 1, part to be machined; 2, first locking assembly; 21, first mounting seat; 22, hook plate; 23, first connecting column; 24, first sliding groove; 3, first rotating seat; 4, locking screw; 5, second locking assembly; 51, second mounting seat; 52, claw; 53, second sliding groove; 54, second connecting column; 6, knuckle bolt; 7, second rotating seat; 8, arc-shaped mounting groove. DETAILED DESCRIPTION

[0027] The embodiments of the present application will be described in detail below with reference to the drawings, but the present application can be implemented in various different ways as defined and covered below.

[0028] The embodiments of the present application will be described in detail below with reference to the drawings, but the present application can be implemented in various different ways as defined and covered below. Figures 1-6 The present application will be further described in detail below.

[0029] The embodiments of the present application disclose a bearing outer ring pressing nut locking device and a locking method.

[0030] Reference Figure 1The utility model provides a kind of bearing outer ring compression nut locking piece locking device and locking method, including first locking assembly 2, first locking assembly 2 includes the first mounting seat 21 for being fixed on the part to be processed 1 and is arranged on the hook plate 22 of first mounting seat 21, hook plate 22 is formed with the hook tip portion for extending into the gap between bearing outer ring compression nut locking piece and bearing;Hook plate 22 and first mounting seat 21 sliding fit make hook plate 22 move along the axial direction of part to be processed 1, to drive hook tip portion hook up the inner tooth of bearing outer ring compression nut locking piece and make the inner tooth of bearing outer ring compression nut locking piece bend.The first mounting seat 21 is used for being fixed on the part to be processed 1, as the base of entire device, provide stable mounting support, and by sliding groove and hook plate 22 cooperation, hook plate 22 can be accurately slid along the axial direction of part to be processed 1;Hook plate 22 is designed with hook tip portion, for extending into the gap between bearing outer ring compression nut locking piece and bearing, by the accurate positioning of hook tip portion, realize the hooking action of the inner tooth of locking piece, and sliding fit structure is limited the movement direction of hook plate 22 by guide, ensure that the action of hook tip portion concentrates in the specific position of the inner tooth of locking piece, to realize local deformation;In the working process, operator rotates threaded drive system, pushes hook plate 22 and moves along the axial direction, so that hook tip portion exerts force on the inner tooth of locking piece, gradually bends and deforms, and the sliding path and stress direction of hook plate 22 are strictly controlled by the sliding groove and limiting structure of first mounting seat 21, avoid the deviation or dispersion of force, simultaneously, first mounting seat 21 and part to be processed 1 are fixedly connected by fastener, provide overall stability, to ensure that the cooperation between device and workpiece is close, safe and reliable during operation, finally realize the accurate locking operation of locking piece.

[0031] Reference Figure 2 And Figure 3, in order to facilitate the control of the hook plate 22, the first connecting column 23 is arranged on the end of the hook plate 22 away from the hook tip along the axial direction of the workpiece 1, the first mounting seat 21 is provided with a first sliding groove 24, and the first connecting column 23 is slidably arranged in the first sliding groove 24. The first connecting column 23 or the hook plate 22 is provided with a polygonal anti-rotation structure, and the first mounting seat 21 is provided with an anti-rotation groove matched with the polygonal anti-rotation structure. The device is designed with a first connecting column 23 arranged along the axial direction of the workpiece 1, and the first connecting column 23 is located at the end of the hook plate 22 away from the hook tip. Through the cooperation with the overall structure of the hook plate 22, the force is guided and transmitted. The first connecting column 23 passes through the first sliding groove 24 arranged on the first mounting seat 21, and the design of the sliding groove ensures that the hook plate 22 can slide in the axial direction under control, avoiding the influence of position deviation on the working precision. The outer contour of the first connecting column 23 is designed as a polygonal anti-rotation structure, which is matched with the matching anti-rotation groove on the first mounting seat 21 to prevent the hook plate 22 from rotating during force application, and to ensure that the action direction of the hook plate 22 always remains in the axial direction. This structure design realizes the precise control of the hook plate 22, and at the same time, in all actions between the hook plate 22 and the workpiece 1, the direction is always consistent and the force distribution is uniform, improving the reliability and safety of the entire locking operation.

[0032] Further, in order to accurately control the moving distance of the hook plate 22, the first mounting seat 21 is provided with a first screw rod driving structure, which converts the input circumferential rotation power into a force for driving the hook plate 22 to move along the axial direction of the workpiece 1.

[0033] The first screw rod driving structure includes a first rotating seat 3, which is threadedly connected with the first connecting column 23, and the bottom of the first rotating seat 3 abuts against the first mounting seat 21 to limit the axial movement of the rotating seat. The core components of the screw rod driving structure are the first screw rod and the first rotating seat 3 connected by threads. The first rotating seat 3 is threadedly connected with the first connecting column 23 of the hook plate 22. By rotating the first screw rod, the rotating seat can be accurately moved forward or backward in the axial direction, thereby driving the hook plate 22 to slide in the sliding groove under control. This screw rod driving design has high precision displacement control capability, which can accurately adjust the stroke of the hook plate 22 by rotating the angle, ensuring that the hook tip only acts on a specific position and depth of the inner teeth of the locking plate, without generating excess displacement or excessive force. The first screw rod driving structure includes a first rotating seat 3, which is threadedly connected with the first connecting column 23, and the bottom of the first rotating seat 3 abuts against the first mounting seat 21 to limit the axial movement of the rotating seat.

[0034] Specifically, the first mounting seat 21 is threadedly connected with a clamping screw 4, the clamping screw 4 is arranged along the radial direction of the first connecting column 23, and the clamping screw 4 abuts against the side wall of the first connecting column 23 to limit the radial movement of the first connecting column 23. The clamping screw 4 is arranged along the radial direction of the first connecting column 23, and the end of the clamping screw 4 directly abuts against the side wall of the first connecting column 23, thereby realizing the stable fixing of the connecting column through the radial pressure. The core function of this structure is to prevent the radial deviation of the first connecting column 23 caused by stress during the operation of the hook plate 22, thereby ensuring that the hook plate 22 always moves linearly along the axis of the sliding groove. This design effectively enhances the action accuracy of the hook plate 22, and the adjustability of the clamping screw 4 allows the operator to flexibly adjust the fixing force of the connecting column according to actual needs, thereby improving the adaptability and reliability of the device. In addition, this radial limiting structure not only ensures the smooth sliding cooperation between the hook plate 22 and the first mounting seat 21, but also further avoids assembly errors or damage to the machined parts caused by the radial displacement of the connecting column, thereby ensuring the accuracy and safety of the bending operation of the locking plate.

[0035] Referring to Figure 4 After the first locking assembly 2 is used to bend the inner teeth of the locking plate, the inner teeth of the locking plate cannot be completely surface-fitted with the side wall of the nut, and therefore the bearing outer ring and nut locking plate pressing device further comprises a second locking assembly 5, which comprises a second mounting seat 51 for fixing on the part to be machined 1 and a clamping jaw 52 arranged on the second mounting seat 51. The clamping jaw 52 is in sliding cooperation with the second locking assembly 5, so that the clamping jaw 52 moves along the radial direction of the part to be machined 1, so as to drive the clamping jaw 52 to press the bearing outer ring and nut locking plate inner teeth to bend the bearing outer ring and nut locking plate inner teeth. This assembly comprises a second mounting seat 51 for fixing on the part to be machined 1 and a clamping jaw 52 arranged on the second mounting seat 51. The second mounting seat 51 serves as the support structure of the assembly, which is firmly connected to the part to be machined 1 through bolts, providing a stable basis for the movement of the clamping jaw 52. The mounting seat is designed with a radial sliding groove, so that the clamping jaw 52 can slide smoothly along the radial direction. The clamping jaw 52 serves as an execution component, and its end is specially designed as a pressing surface matching the shape of the inner teeth of the locking plate, which is used for precise contact and action on the inner teeth. The clamping jaw 52 moves by screw rod drive in cooperation with the sliding groove. The operator rotates the screw rod, and the threaded structure converts the rotary power into the linear movement of the clamping jaw 52 along the radial direction, drives the clamping jaw 52 to align with the inner teeth of the locking plate and apply radial pressure, so as to further bend the inner teeth of the locking plate until they completely fit the side wall of the nut. The second mounting seat 51 and the sliding groove ensure the accurate and stable movement direction and stress position of the clamping jaw 52.

[0036] Referring to Figure 5 and Figure 6,In order to facilitate accurate control of the claw 52, the second mounting seat 51 is provided with a second screw driving structure, which converts the input circumferential rotation power into a force that drives the claw 52 to move radially along the part to be machined 1. Through the cooperative work of accurately converting the input circumferential rotation power into the linear movement force of the claw 52 along the radial direction, the second mounting seat 51 is fixed on the part to be machined 1, providing stable support for the entire driving structure, and a radial sliding groove is designed thereon to limit the movement direction of the claw 52 and ensure the stability of its movement. The second screw is connected with the second rotating seat 7 through threads, when the operator rotates the screw, the threads drive the second rotating seat 7 to slide radially, the second rotating seat 7 is connected with the claw 52 and transmits the rotation power to the claw 52 through threads, thereby pushing the claw 52 to move radially along the sliding groove, the end of the claw 52 is designed as an extrusion surface matched with the shape of the inner tooth of the locking plate, when the claw 52 moves, its end applies accurate radial pressure to the inner tooth of the locking plate, further bending the inner tooth and making it fully fit with the side wall of the nut, at the same time, the sliding groove of the second mounting seat 51 limits the movement direction of the claw 52, avoiding position deviation during radial movement, ensuring uniform stress and accurate action point, the overall design of the second screw driving structure makes the operation process more efficient and controllable, and the movement distance and force of the claw 52 can be accurately controlled by adjusting the rotation angle of the screw, thereby greatly improving the assembly quality and locking effect, and avoiding assembly errors or part damage that may be caused by traditional methods.

[0037] The second mounting base 51 is provided with a second sliding groove 53 in the radial direction, and the second connecting column 54 is arranged on the clamping jaw 52 in the axial direction of the part to be machined 1, and the second connecting seat slides in the second sliding groove 53. The function of the sliding groove is to provide accurate guidance and limitation for the radial movement of the clamping jaw 52, to ensure that the clamping jaw 52 always slides smoothly in the radial direction during operation without deviation, so as to ensure that the force of the clamping jaw 52 is concentrated and the direction is accurate; the second connecting column 54 is arranged on the clamping jaw 52 in the axial direction of the part to be machined 1, and the second connecting column 54 is integrally connected with the clamping jaw 52, and the function is to combine the movement of the clamping jaw 52 with the driving force transmission structure, and at the same time realize the controlled movement of the clamping jaw 52 by sliding in the second sliding groove 53, the size and shape of the second sliding groove 53 are accurately designed, and the shape and size of the second connecting column 54 are matched, to ensure that the connecting column only moves in the radial direction in the sliding groove without tilting or rotating, the cooperation of the sliding groove and the connecting column not only provides stable support for the movement of the clamping jaw 52, but also prevents assembly errors caused by radial deviation during force application; the second mounting base 51 is the supporting structure of the whole second locking assembly 5, which stably fixes the assembly on the part to be machined 1 through its fixing mode, and provides a reliable basis for the sliding and radial force of the clamping jaw 52, and at the same time, the arrangement of the second connecting column 54 enables the clamping jaw 52 to be connected with the second screw driving structure, and the connecting column moves in the sliding groove by screw transmission, thereby driving the clamping jaw 52 to apply force to the inner teeth of the locking piece in the radial direction, completing the further bending and fitting of the locking piece.

[0038] Specifically, the second screw driving structure includes a universal bolt 6, one end of the universal bolt 6 is sleeved on the second connecting column 54, and the other end of the universal bolt 6 passes through the second connecting seat and is threadedly connected with a second rotating seat 7. The driving force is directly applied to the connecting column through the sleeving mode, thereby driving the clamping jaw 52 to slide in the radial direction, the other end of the universal bolt 6 passes through the second connecting seat and is threadedly connected with the second rotating seat 7, the second rotating seat 7 is a bearing part for rotating power input, and the circumferential rotation force is converted into the linear movement force of the universal bolt 6 in the radial direction through the screw transmission by rotating the second rotating seat 7, the arrangement of the universal bolt 6 allows it to be flexibly adjusted within a certain range to adapt to the assembly tolerance or different parts to be machined 1, to ensure that the force transmission is stable and non-stuck during driving; the second connecting seat is fixed on the second mounting base 51 and provides stable support, and the universal bolt 6 is arranged thereon and slidably connected therewith, to ensure that the universal bolt 6 can realize linear motion during force application, and at the same time, the second connecting seat maintains the stability and precision of the whole structure through the overall cooperation with the second sliding groove 53 and the mounting base, through the cooperation of the above-mentioned parts, the second screw driving structure realizes the power conversion from rotation to linear motion and accurately controls the radial movement of the clamping jaw 52.

[0039] An arc-shaped mounting groove 8 is formed on the first mounting seat 21 and / or the second mounting seat 51, and a locking bolt for locking with the part to be processed 1 is arranged in the arc-shaped mounting groove 8. The arc-shaped design allows the mounting seat to adjust the position and angle within a certain range to adapt to different sizes of the part to be processed 1 and the mounting position of the locking piece, thereby improving the applicability and versatility of the device. The locking bolt arranged in the mounting groove is an important connecting piece for fixing the device and the part to be processed 1. The locking bolt is fastened by passing through the mounting groove and the reserved hole or flange thread on the part to be processed 1, realizing reliable connection between the mounting seat and the processed part. The design of the arc-shaped groove allows the locking bolt to move along the arc-shaped path in the mounting groove, so that the mounting seat can be accurately adjusted and positioned according to the specific position of the locking piece or nut, ensuring that the working parts of the device, such as the hook plate 22 or the clamping jaw 52, can be aligned with the inner and outer teeth of the locking piece for operation. At the same time, the adjusted mounting seat is firmly fixed on the processed part through the tightening action of the locking bolt, ensuring the stability and working precision of the device. The design of the arc-shaped groove and the locking bolt makes the entire device more flexible and adaptable, which not only ensures the precise alignment of each component, but also maintains the stable connection between the device and the processed part during operation, thereby effectively improving the assembly efficiency and locking quality.

[0040] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. Bearing outer ring compression nut lock plate locking device, characterized in that: It comprises a first locking assembly (2), the first locking assembly (2) comprises a first mounting seat (21) for fixing on the part to be processed (1) and a hook plate (22) provided on the first mounting seat (21), the hook plate (22) is formed with a hook tip portion for extending into the gap between the bearing outer ring compression nut lock plate and the bearing; The sliding fit of the hook plate (22) and the first mounting seat (21) enables the hook plate (22) to move axially along the part to be processed (1) to hook the inner teeth of the bearing outer ring compression nut lock plate to bend the inner teeth of the bearing outer ring compression nut lock plate; The bearing outer ring compression nut lock plate locking device further comprises a second locking assembly (5), the second locking assembly (5) comprises a second mounting seat (51) for fixing on the part to be processed (1) and a clamping jaw (52) provided on the second mounting seat (51); The sliding fit of the clamping jaw (52) and the second mounting seat (51) enables the clamping jaw (52) to move radially along the part to be processed (1) to press the inner teeth of the bearing outer ring compression nut lock plate to bend the inner teeth of the bearing outer ring compression nut lock plate.

2. The bearing outer ring compression nut lock plate locking device according to claim 1, characterized in that: The first connecting column (23) is provided axially away from the hook tip portion of the hook plate (22) along the part to be processed (1), the first mounting seat (21) is provided with a first sliding groove (24), the first connecting column (23) is slidably arranged in the first sliding groove (24), the first connecting column (23) or the hook plate (22) is formed with a polygonal anti-rotation structure, and the first mounting seat (21) is provided with an anti-rotation groove matched with the polygonal anti-rotation structure.

3. The bearing outer ring compression nut lock plate locking device according to claim 2, characterized in that: The first mounting seat (21) is provided with a first screw rod driving structure, which converts the input circumferential rotation power into a force to drive the hook plate (22) to move axially along the part to be processed (1).

4. The bearing outer ring compression nut lock plate locking device according to claim 3, characterized in that: The first screw rod driving structure comprises a first rotating seat (3), the first rotating seat (3) is threadedly matched with the first connecting column (23), and the bottom of the first rotating seat (3) abuts against the first mounting seat (21) to limit the axial movement of the first rotating seat (3).

5. The bearing outer ring compression nut lock plate locking device according to claim 2, characterized in that: The first mounting seat (21) is threadedly connected with a clamping screw (4), the clamping screw (4) is arranged radially along the first connecting column (23), and the clamping screw (4) abuts against the side wall of the first connecting column (23) to limit the radial movement of the first connecting column (23).

6. The bearing outer ring compression nut lock plate locking device according to claim 5, characterized in that: The second mounting base (51) is provided with a second screw driving structure, which converts the input circumferential rotation power into a force for driving the claw (52) to move radially along the part to be machined (1).

7. The bearing outer ring compression nut lock plate locking device according to claim 6, characterized in that: The second mounting base (51) is provided with a second mounting base (51), and the claw (52) is provided with a second connecting column (54) in the axial direction of the part to be machined (1), and the second connecting column (54) is slidably arranged in the second sliding groove (53).

8. The bearing outer ring compression nut lock plate locking device according to claim 7, characterized in that: The second screw driving structure comprises a hinged bolt (6), one end of the hinged bolt (6) is sleeved on the second connecting column (54), and the other end of the hinged bolt (6) penetrates through the second mounting base (51) and is threadedly connected with a second rotating seat (7).

9. The bearing outer ring compression nut lock plate locking device according to claim 1 or 6, characterized in that: The first mounting base (21) and / or the second mounting base (51) is provided with an arc-shaped mounting groove (8), and a locking bolt for locking cooperation with the part to be machined (1) is arranged in the arc-shaped mounting groove (8).

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