阅读说明：本技术 一种锁圈压紧工装 (Lock ring compresses tightly frock ) 是由 胡一廷 陈栋权 朱亮 于 2019-09-17 设计创作，主要内容包括：本发明的一个目的在于提供一种锁圈压紧工装,能够实现对锁圈沿周向任意位置进行压紧。为实现前述一个目的的锁圈压紧工装,用于将锁圈压紧于压紧螺母上,压紧螺母的端面提供有用于压入锁圈的锁紧槽,该锁圈压紧工装包括基座以及压杆件,基座具有内环部以及外环部,内环部固定于旋转轴轴端,外环部相对内环部可转动；压杆件与外环部铰接,具有施力端以及挤压端,当压杆件以铰接处为中心转动时,挤压端能够与锁圈外周侧壁相抵。(The invention aims to provide a locking ring pressing tool which can press any position of a locking ring along the circumferential direction. The lock ring pressing tool comprises a base and a pressing rod piece, wherein the base is provided with an inner ring part and an outer ring part, the inner ring part is fixed at the shaft end of a rotating shaft, and the outer ring part can rotate relative to the inner ring part; the compression bar piece is hinged with the outer ring part and is provided with a force application end and an extrusion end, and when the compression bar piece rotates by taking the hinged part as a center, the extrusion end can be abutted against the peripheral side wall of the lock ring.)

1. The utility model provides a lock collar compresses tightly frock for compress tightly the lock collar on gland nut, gland nut's terminal surface is provided with and is used for impressing the locking groove of lock collar, its characterized in that, this lock collar compresses tightly the frock and includes:

the base is provided with an inner ring part and an outer ring part, the inner ring part is fixed at the shaft end of the rotating shaft, and the outer ring part can rotate relative to the inner ring part; and the number of the first and second groups,

and the compression bar piece is hinged with the outer ring part and is provided with a force application end and an extrusion end, and when the compression bar piece rotates by taking the hinged part as a center, the extrusion end can be abutted against the peripheral side wall of the lock ring.

2. The lock ring pressing tool according to claim 1, wherein a lug part is provided on a peripheral side wall of the outer ring part, and the pressing bar member is hinged to the lug part.

3. The lock ring pressing tool according to claim 1, wherein the pressing bar is divided into a first bar part and a second bar part at the hinge joint, the force application end is a free end of the first bar part, and the extrusion end is a free end of the second bar part;

wherein, an included angle is formed between the first rod part and the second rod part.

4. The lock ring pressing tool according to claim 1, wherein an elastic member is arranged between the second rod part and the outer ring part.

5. The lock ring pressing tool according to claim 1, wherein the pressing end is provided with an outwardly protruding pressing bulb.

6. The lock ring pressing tool according to claim 1, further comprising a stopper and a pressing bolt, wherein the stopper and the base together provide a threaded hole for allowing the pressing bolt to be screwed in, and screwing the pressing bolt can apply a downward force on the stopper to press the stopper simultaneously over the inner ring portion and the outer ring portion.

7. The lock ring pressing tool as claimed in claim 1, wherein the lower portion of the inner ring portion has an annular flange projecting toward the outer peripheral side, and the outer ring portion is supported on the annular flange.

8. The lock ring pressing tool according to claim 1, wherein the cross section of the pressing rod piece is wedge-shaped.

9. The lock ring pressing tool according to claim 1, wherein one of the inner ring portion and the outer ring portion has a slide groove, and the other has an annular protrusion, and the slide groove is in fit contact with the annular protrusion.

10. The lock ring pressing tool according to claim 1, wherein an inner peripheral side of the inner ring portion has an internal thread that is fitted with an external thread of a shaft end of the rotating shaft.

Technical Field

The invention relates to a locking ring pressing tool.

Background

The rotation of the rotor of the aircraft engine is realized by a bearing, the sectional schematic diagram of the bearing inner ring in the assembly state in fig. 1 shows that the bearing inner ring 8 is fixed on a rotating shaft 7 and is pressed and limited by a compression nut 9. To prevent the gland nut 9 from loosening and causing bearing failure, a lock plate or lock ring locking mode is usually adopted.

Fig. 2 shows a schematic view of the assembled state of the lock ring and the inner bearing ring, the inner bearing ring nut of the engine is locked by the "cup" lock ring 1 as shown in the figure, and the end face of the gland nut 9 is provided with a locking groove 90 for the lock ring 1 to press in. In the conventional assembling process, after the compression nut 9 is tightened, the peripheral side wall of the lock ring 1 is deformed in a knocking mode so that at least a portion of the peripheral side wall of the lock ring 1 is pressed into the lock groove 90 of the compression nut 9 to restrict the rotation of the compression nut 9.

The compression nut 9 and the lock ring 1 in the aircraft engine need to be assembled deeply into the oil baffle sleeve 6. The assembly mode that the lock ring 1 deforms by being knocked by a screwdriver is adopted, and parts are often damaged due to space limitation and uncontrollable manual knocking. Locking of a locking ring in a narrow space in the existing assembly is usually carried out after tools such as locking pliers and the like extend into the narrow space. However, the inventor finds that tools such as locking pliers and the like are limited by the number and positions of the locking grooves on the compression nut when in use, and the locking grooves in a plurality of different circumferential positions in the compression nut are often required to be repeatedly disassembled and assembled and then compressed, so that the operation is complex.

Disclosure of Invention

The invention aims to provide a locking ring pressing tool which can press any position of a locking ring along the circumferential direction.

In order to achieve the above object, a clamping ring pressing tool for pressing a clamping ring onto a clamping nut is provided, wherein a locking groove for pressing the clamping ring into is provided on an end surface of the clamping nut, and the clamping ring pressing tool comprises:

the base is provided with an inner ring part and an outer ring part, the inner ring part is fixed at the shaft end of the rotating shaft, and the outer ring part can rotate relative to the inner ring part; and the number of the first and second groups,

and the compression bar piece is hinged with the outer ring part and is provided with a force application end and an extrusion end, and when the compression bar piece rotates by taking the hinged part as a center, the extrusion end can be abutted against the peripheral side wall of the lock ring.

In one or more embodiments, the outer circumferential side wall of the outer ring portion is provided with a lug portion, and the compression bar member is hinged to the lug portion.

In one or more embodiments, the compression bar member is divided into a first bar portion and a second bar portion at the hinge joint, the force application end is a free end of the first bar portion, and the extrusion end is a free end of the second bar portion;

wherein, an included angle is formed between the first rod part and the second rod part.

In one or more embodiments, a resilient member is disposed between the second rod portion and the outer ring portion.

In one or more embodiments, the crush end has an outwardly projecting crush bulb.

In one or more embodiments, the stopper and the base together provide a threaded hole for allowing the pressing bolt to be screwed in, and the pressing bolt can be screwed to exert a downward force on the stopper so as to press the stopper onto the inner ring portion and the outer ring portion simultaneously.

In one or more embodiments, the inner ring portion lower portion has an annular flange projecting toward the outer peripheral side, and the outer ring portion is supported on the annular flange.

In one or more embodiments, the compression bar member has a wedge-shaped cross-section.

In one or more embodiments, one of the inner ring portion and the outer ring portion has a slide groove, and the other has an annular projection, and the slide groove is in fit contact with the annular projection.

In one or more embodiments, the inner peripheral side of the inner ring portion has an internal thread that mates with the external thread of the shaft end of the rotating shaft.

The invention has the advantages that the inner ring part and the outer ring part of the base are configured to be relatively rotatable, so that the extrusion end of the compression bar piece can be aligned with the locking groove of the compression nut by rotating the outer ring part, and the compression of any position of the locking ring along the circumferential direction is realized.

Drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a schematic sectional view of an inner ring of a bearing in an assembled state;

FIG. 2 is a schematic view showing a state where a lock ring and a bearing inner ring are assembled;

FIG. 3 shows a perspective view of one embodiment of a locking ring pressing tool;

FIG. 4 shows a schematic view of the lock ring compression tooling as assembled;

fig. 5 is a partially enlarged schematic view of fig. 4.

Detailed Description

The following discloses many different embodiments or examples for implementing the subject technology described. Specific examples of components and arrangements are described below to simplify the present disclosure, but these are merely examples and are not intended to limit the scope of the present disclosure. For example, if a first feature is formed over or on a second feature described later in the specification, this may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact. Additionally, reference numerals and/or letters may be repeated among the various examples throughout this disclosure. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. Further, when a first element is described as being coupled or coupled to a second element, the description includes embodiments in which the first and second elements are directly coupled or coupled to each other, as well as embodiments in which one or more additional intervening elements are added to indirectly couple or couple the first and second elements to each other.

It should be noted that, where used, the following description of upper, lower, left, right, front, rear, top, bottom, positive, negative, clockwise, and counterclockwise are used for convenience only and do not imply any particular fixed orientation. In fact, they are used to reflect the relative position and/or orientation between the various parts of the object.

As shown in fig. 3, which is a schematic perspective view of an embodiment of a lock ring pressing tool for pressing a lock ring onto a pressing nut, the lock ring pressing tool 2 includes a base 20 and a pressing rod 21.

The base 20 is annular as shown in the figure, and has an inner ring portion 201 and an outer ring portion 202, the inner ring portion 201 is fixed to an axial end of the rotating shaft 7 to serve as a support base, and the outer ring portion 202 is rotatable with respect to the inner ring portion 201. The compression bar member 21 is hinged to the outer ring portion 202 and has a force application end 210 and a compression end 211.

As shown in fig. 4, which is a schematic view of the assembly of the locking ring pressing tool, the base 20 is supported at the outer periphery of the shaft end of the rotating shaft 7, and at this time, an external force is applied at the force applying end 210, so that the presser bar 21 can rotate around the hinge joint 22, and at this time, the pressing end 211 of the presser bar 21 can abut against the outer peripheral side wall of the locking ring 1. At this time, the external force is continuously applied to the force application end 210, so that the pressing end 211 continuously presses the peripheral sidewall of the lock ring 1, and the peripheral sidewall of the lock ring 1 is deformed until at least a portion of the peripheral sidewall is pressed into the locking groove 90 of the compression nut 9.

By configuring the inner ring portion 201 and the outer ring portion 202 of the base 20 to be relatively rotatable, the pressing end 211 of the pressing bar member 21 can be aligned with the locking groove 90 of the pressing nut 9 by rotating the outer ring portion 202, so that the locking ring 1 can be pressed at any position in the circumferential direction.

Although one embodiment of the present lock ring compression tool is described above, in other embodiments of the present lock ring compression tool, the lock ring compression tool and its various components may have many more details than the embodiments described above, and at least some of these details may vary widely. At least some of these details and variations are described below in several embodiments.

In one embodiment of the lock ring pressing tool, the outer circumferential side wall of the outer ring portion 202 is provided with a lug portion 203, and the lug portion 203 protrudes outward in the radial direction of the outer ring portion 202. The pressing rod 21 is hinged with the lug part 203. In one embodiment, the compression bar member 21 is hinged with the lug part 203 by a detachable pin, so that the compression bar member 21 can be replaced according to different assembly environments.

In one embodiment of the lock ring pressing tool, the pressing bar member 21 is divided into a first bar portion 21a and a second bar portion 21b at both sides of the hinge 22. The force application end 210 is a free end of the first lever portion 21a, and the pressing end 211 is a free end of the second lever portion 21 b. An included angle x is formed between the first rod portion 21a and the second rod portion 21b, so that the pressing end 211 can press the lock ring 1 only by applying a relatively small force to the force applying end 210. In one embodiment of the locking ring pressing tool, the force applying end 210 of the pressing rod piece 21 can be further externally connected with an extension rod to increase the force arm of the force applying end 210, so that the extrusion process is more labor-saving.

In an embodiment of the locking ring pressing tool, an elastic member, which may be a coil spring, may be further disposed between the second rod portion 21b and the outer ring portion 202, so that the elastic member can elastically restore the pressing rod member 21 after the locking ring 1 is pressed and deformed.

Fig. 5 is a partially enlarged schematic view of fig. 4. The extrusion end 211 is further provided with an extrusion bulb 212 protruding outwards, so that during the extrusion deformation process, the extrusion bulb 212 is in point contact with the lock ring 1, and the pressure loss is effectively reduced.

In the embodiment that the locking ring compressed tightly frock, be clearance fit connection between outer ring portion 202 and the interior ring portion 201, and guarantee that the clearance is less between outer ring portion 202 and the interior ring portion 201 to reduce outer ring portion 202 and when rotating rocking to interior ring portion 201, improved the stability of frock assembly.

In an embodiment of the locking ring pressing tool, the locking ring pressing tool further includes a limiting block 23 and a pressing bolt 24, the limiting block 23 and the base 20 are provided with a threaded hole together, specifically, as shown in fig. 3, threaded holes are respectively formed in the outer ring portion 202 and the limiting block 23, and the pressing bolt 24 is allowed to be screwed in after the threaded holes of the ring member 202 and the limiting block 23 are aligned. At this time, the tightening bolt 24 is screwed to apply a downward pressure on the stopper 23, so as to simultaneously press the stopper 23 on the inner ring portion 201 and the outer ring portion 202, thereby restricting the rotation of the outer ring portion 202 relative to the inner ring portion 201. When the hold-down bolt 24 is unscrewed, the outer ring portion 202 can still rotate relative to the inner ring portion 201. When the outer ring portion 202 rotates to the position where the extrusion end 211 is aligned with the locking groove 90, the outer ring portion 202 and the inner ring portion 201 are simultaneously pressed by rotating the pressing bolt 24, so that the pressing quality reduction caused by the rotation displacement between the outer ring portion 202 and the inner ring portion 201 in the extrusion process is avoided. In an embodiment different from the illustrated embodiment, the threaded holes may be formed in the inner ring portion 201 and the stopper 23.

With continued reference to fig. 4, in one embodiment of the locking ring pressing tool, the lower portion of the inner ring portion 201 has an annular flange 201a protruding toward the outer peripheral side, and the outer ring portion is supported on the annular flange 201 a.

In one embodiment of the lock ring pressing tool, the cross section of the pressing rod piece 21 is wedge-shaped, so that the overall rigidity of the pressing rod piece 21 is enhanced.

In one embodiment of the locking ring pressing tool, the outer circumferential side wall of the inner ring portion 201 is provided with a sliding groove, the inner circumferential side wall of the outer ring portion 202 is provided with an annular convex portion, and the inner ring portion 201 and the outer ring portion 202 are in fit connection in a manner that the annular convex portion is clamped into the sliding groove. In other embodiments, the annular protrusion may be disposed on the outer peripheral sidewall of the inner ring portion 201, and correspondingly, the sliding groove may be disposed on the inner peripheral sidewall.

In one embodiment of the retainer pressing tool, the inner circumferential side of the inner ring portion 201 has an internal thread that is fitted to the external thread at the shaft end of the rotating shaft 7, and the inner ring portion 201 is fixed to the shaft end of the rotating shaft 7 by a thread fit.

In assembling, the inner ring portion 201 is first fixed to the shaft end of the rotary shaft 7 by screw fitting, and then the outer ring portion 202 is assembled to the outer peripheral side of the inner ring portion 201 so that the outer ring portion 202 is rotatable with respect to the inner ring portion 201. The press rod piece 21 is hinged with the outer ring part 202 conveniently so as to finish the assembly of the tool.

Then, the outer ring portion 202 is rotated until the pressing end 211 of the presser bar member 21 is aligned with the lock groove 90, and then the pressing bolt 24 is tightened so that the outer ring portion 202 cannot rotate relative to the inner ring portion 201. Then, an external force is applied to the force application end 210, so that the pressing rod 21 rotates around the hinge joint 22, the extrusion end 211 abuts against the outer peripheral side of the lock ring 1 and continuously extrudes the lock ring 1 until at least a part of the lock ring 1 deforms and is clamped into the locking groove 90, after one extrusion process is completed, the pressing bolt 24 is unscrewed, and the outer ring part 202 can rotate relative to the inner ring part 201 again. The above-described pressing operation is repeated so that at least 3 of the locking rings 1 are deformed and snapped into the locking grooves 90.

Although the present invention has been disclosed in terms of the preferred embodiment, it is not intended to limit the invention, and variations and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope defined by the claims of the present invention, unless the technical essence of the present invention departs from the content of the present invention.