CN113492308B

CN113492308B - Assembly system of gland nut and screwing positioning tool thereof

Info

Publication number: CN113492308B
Application number: CN202010203379.1A
Authority: CN
Inventors: 赵岩; 苏巧灵; 汤福龙; 李琳
Original assignee: AECC Commercial Aircraft Engine Co Ltd
Current assignee: AECC Commercial Aircraft Engine Co Ltd
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2022-03-29
Anticipated expiration: 2040-03-20
Also published as: CN113492308A

Abstract

One object of the present invention is to provide a tightening positioning tool, which can achieve stable and accurate assembly of a compression nut. The invention also aims to provide an assembly system of the compression nut, which comprises the tightening positioning tool. In order to realize the aforesaid purpose screw up the location frock and include: support locating component, screw up subassembly and power input subassembly. The supporting and positioning assembly comprises a positioning chassis and a positioning base, the positioning base is fixedly supported on the positioning chassis, and the bearing is elastically supported and fixedly supported in the positioning base. The screwing assembly comprises an execution unit, a limiting plate and a connecting mandrel. The power input assembly is fixedly connected with the supporting and positioning assembly and is provided with an input unit and an output unit, and the input unit can be matched and connected with the input end of the execution unit so as to transmit torque to the execution unit.

Description

Assembly system of gland nut and screwing positioning tool thereof

Technical Field

The invention relates to an assembly system of a compression nut and a screwing and positioning tool thereof.

Background

Fig. 1 shows a perspective view of a bearing cartridge in a compressor assembly, the bearing cartridge 8 is used for supporting a bearing, and an outer ring of the bearing is supported on an inner circumferential flange 81 of the bearing cartridge 8 and is compressed by a compression nut 9 shown in fig. 2 to limit axial movement of the bearing cartridge.

The inner circumference of the bearing spring support 8 has an internal thread 82, correspondingly, the outer circumference of the compression nut 9 has an external thread 91, and when the compression nut 9 is screwed into the bearing spring support 8, a torque of about 800N · m needs to be input to the compression nut 9 to ensure that the compression nut 9 compresses the bearing outer ring. Meanwhile, when the compression nut 9 is tightened, it is further required to ensure that the bearing elastic support 8 does not follow up due to the tightening force.

Because the tightening of the gland nut 9 needs to be completed in a narrow space, the tightening space is limited, and the distribution of the bearing elastic support 8 in the compressor needs to be considered, so that a tightening tool is urgently needed, and the accurate assembly of the gland nut 9 can be realized.

Disclosure of Invention

One object of the present invention is to provide a tightening positioning tool, which can achieve stable and accurate assembly of a compression nut.

The invention also aims to provide an assembly system of the compression nut, which comprises the tightening positioning tool.

In order to realize the aforesaid purpose screw up location frock for realize gland nut and the assembly that the bearing bullet was supported, include:

the supporting and positioning assembly comprises a positioning chassis and a positioning base, the positioning base is fixedly supported on the positioning chassis, and the bearing is elastically supported and fixedly supported in the positioning base;

the tightening assembly comprises an execution unit, a limiting plate and a connecting mandrel, wherein the execution unit is hollow and is provided with an input end and an output end, the output end is provided with an end face tooth part matched with the inner peripheral teeth of the compression nut, the connecting mandrel penetrates through the execution unit, two ends of the connecting mandrel are respectively connected with the limiting plate and the positioning chassis, the limiting plate and the positioning chassis are respectively limited by the limiting nut to be separated from two ends of the connecting mandrel, and the limiting plate is tightly pressed on the input end of the execution unit by screwing the limiting nut; and the number of the first and second groups,

the power input assembly is fixedly connected with the supporting and positioning assembly and is provided with an input unit and an output unit, and the input unit can be matched and connected with the input end of the execution unit so as to transmit torque to the execution unit.

In one or more embodiments, the execution unit includes: an input, at least one height adjustment, and an output, the input having the input, the output having the output;

wherein, the both ends of height adjusting part respectively with but input member and output piece transmission connection.

In one or more embodiments, the height adjustment element is in driving connection with the input element and the output element via meshing toothing.

In one or more embodiments, the positioning base comprises a first positioning base and a second positioning base which are fixedly connected, the lower end surface of the bearing elastic support is provided with a convex part, and the upper end surface of the bearing elastic support is provided with a first connecting hole;

the first positioning base corresponds the convex part has been seted up the constant head tank, through with the convex part card is gone into the constant head tank so that the bearing bullet prop with first positioning base cooperation location, second positioning base corresponds first connecting hole is provided with the second connecting hole cooperation locating position, first connecting hole with the second connecting hole is linked together to allow the fastener to pass and fixed connection the bearing bullet prop with second positioning base.

In one or more embodiments, the supporting and positioning assembly further comprises a positioning top plate, and the positioning top plate is in supporting connection above the first positioning base through a connecting shaft;

the power input assembly is provided with a connecting convex part, a positioning hole is formed in the positioning top plate, and the connecting convex part is inserted into the positioning hole so that the power input assembly is fixedly connected with the supporting and positioning assembly.

In one or more embodiments, a stopper pin is disposed in the positioning hole.

In one or more embodiments, the input end is provided with an outer gear ring at the outer circumference side, the output unit is provided with an inner gear ring at the inner circumference side, and the outer gear ring and the inner gear ring can be arranged in a meshed mode.

In one or more embodiments, the input unit and the output unit are geared together.

In one or more embodiments, the power input assembly further comprises a handle.

The assembly system of the compression nut for achieving the other purpose comprises a force application device and a screwing and positioning tool, and is characterized in that the screwing and positioning tool is the screwing and positioning tool;

wherein the force application device is used for applying torque to the input unit.

The gain effect of the invention is that: the moment is applied through the input unit of force application device in the power input subassembly to make the output unit apply the moment to the execution unit, and transmit to gland nut, make gland nut screwed up gradually in the bearing bullet is propped up, in the process of screwing up, because the connecting mandrel is compressed tightly the limiting plate, execution unit and support locating component through limit nut, and the restriction removes each other, the bearing bullet is supported by fixed support in the location base simultaneously, make in the process of screwing up, the bearing bullet can not take place the follow-up, the accurate state to gland nut and bearing bullet is propped up has been realized. On the other hand, the tightening and positioning tool is compact in structure and can be assembled in a narrow space.

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 shows a schematic perspective view of a bearing cartridge in a compressor assembly;

FIG. 2 shows a schematic perspective view of a compression nut;

FIG. 3 shows a perspective view of one embodiment of a tightening positioning fixture;

FIG. 4 is a cross-sectional view of the tightening assembly and the support positioning assembly in an assembled state;

FIG. 5 illustrates a perspective view of one embodiment of a connecting mandrel;

FIG. 6 illustrates a partial enlarged schematic view of one embodiment of an execution unit;

FIG. 7 is a perspective view of the input member in a half-section;

FIG. 8 is a perspective view of the height adjuster in half section;

FIG. 9 is a perspective view of the output member in a half-section;

FIGS. 10 and 11 are enlarged partial schematic views of the support and positioning assembly, respectively;

fig. 12 shows a schematic perspective view of the first positioning base in a half-section;

FIG. 13 shows a perspective view of the second positioning base in half section;

figure 14 shows a perspective view of the positioning chassis in half section;

FIG. 15 shows a schematic perspective view of the first positioning base in half section from another angle;

FIG. 16 is a schematic perspective view of a half-section of a positioning top plate;

FIG. 17 is a perspective view of the power input assembly in a half-section;

fig. 18 is a perspective view of the power input assembly from a top view.

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.

It is noted that these and other figures which follow are merely exemplary and not drawn to scale and should not be considered as limiting the scope of the invention as it is actually claimed. Further, the conversion methods in the different embodiments may be appropriately combined.

Fig. 3 shows a screwing and positioning tool for assembling the compression nut 9 to the bearing spring support 8 shown in fig. 1 to 2, wherein the positioning tool comprises a screwing component 1, a supporting and positioning component 2 and a power input component 3.

Fig. 4 is a cross-sectional view of the tightening assembly 1 and the support positioning assembly in an assembled state, wherein the tightening assembly includes an execution unit 11, a limit plate 12 and a connection mandrel 13. The actuator unit 11 is hollow as shown, i.e. the actuator unit 11 has a cavity therein for allowing the connecting mandrel 13 to pass through. As can be seen from fig. 2 and 4, the execution unit 11 has an input end 110 and an output end 111, and has inner circumferential teeth 92 on the inner circumference of the gland nut 9, and has a face tooth portion 1110 on the output end 111 of the execution unit 1 capable of engaging with the inner circumferential teeth 92, and the face tooth portion 1110 engages with the inner circumferential teeth 92, so that torque can be transmitted from the execution unit 1 to the gland nut 9.

The supporting and positioning assembly 2 comprises a positioning chassis 21 and a positioning base 22, wherein the positioning base 22 is fixedly supported on the positioning chassis 21, and the positioning base 22 has an inner contour corresponding to an outer contour of the bearing spring 8, so that the bearing spring 8 is fixedly supported in the positioning base 22.

The connecting mandrel 13 is disposed through the execution unit 11, wherein the connecting mandrel 13 has a length longer than that of the execution unit 11, so that two ends of the connecting mandrel 13 passing through the execution unit 11 respectively protrude out of the execution unit 11 and are respectively connected with the limit plate 12 and the positioning chassis 21. Referring to fig. 4 and 5, the two ends of the connecting mandrel 13 are respectively provided with a thread feature 131, so that after the two ends of the mandrel 13 respectively pass through the limiting plate 12 and the positioning chassis 21 as shown in fig. 4, the limiting plate 12 and the positioning chassis 21 are respectively pressed against the shoulder of the connecting mandrel 13 by the limiting nut 14, so as to limit the limiting plate 12 and the positioning chassis 21 from coming out of the two ends of the connecting mandrel 13. The limiting plate 12 can be pressed to the input end 110 of the execution unit 11 by screwing the limiting nut 14, and the positioning chassis 21 can be pressed to be close to the positioning base 22 by screwing the limiting nut 14.

With reference to fig. 3, the power input assembly 3 is fixedly connected to the supporting and positioning assembly, and has an input unit 31 and an output unit 32, wherein the input unit 31 is fittingly connected to the input end 110 of the execution unit 1, so as to transmit torque to the execution unit 1.

The tightening positioning tool in one or more of the foregoing embodiments may be applied to a system for assembling a compression nut, where the system for assembling a compression nut further includes a force application device, and in some embodiments, the force application device may be a wrench or a screwing device, and applies a torque to the input unit 31 in the power input assembly 3 through the force application device, so that the output unit 32 in the power input assembly 3 can output a torque.

When the bearing elastic support device is used, the input unit 31 in the power input assembly 3 applies torque through the force application device, so that the output unit 32 applies torque to the execution unit 1 and transmits the torque to the compression nut 9, the compression nut 9 is gradually screwed in the bearing elastic support 8, in the screwing process, the limiting plate 12, the execution unit 11 and the support positioning assembly 2 are pressed through the limiting nut 14 by the connecting mandrel 13 and the mutual movement among the limiting plate, the execution unit 11 and the support positioning assembly 2 is limited, meanwhile, the bearing elastic support 8 is fixedly supported in the positioning base 22, the bearing elastic support 8 cannot follow up in the screwing process, and the accurate state of the compression nut 9 and the bearing elastic support 8 is achieved. On the other hand, the tightening and positioning tool is compact in structure and can be assembled in a narrow space.

Although one embodiment of the present screw down positioning tool is described above, in other embodiments of the present screw down positioning tool, the screw down positioning tool may have more details than the embodiments described above in many respects, and at least some of these details may vary widely. At least some of these details and variations are described below in several embodiments.

As fig. 6 shows a partially enlarged schematic view of an embodiment of the actuator unit, the actuator unit 11 comprises an input element 112, a height adjustment element 113 and an output element 114. The input element 112 has an input 110 of the execution unit 11, and the output element 114 has an output 111 of the execution unit 11. The height adjusting key 113 is drivingly connected to the input member 112 and the output member 114 at two ends, and in one embodiment, the height adjusting key 113 is one as shown in fig. 6, and in some other embodiments different from those shown, the height adjusting key 113 may be multiple ones to accommodate the bearing support 8 with different heights. Because the execution unit 11 is formed by assembling a plurality of components which can be connected in a transmission manner, the height of the tightening positioning tool can be adjusted in a targeted manner according to the heights of the bearing elastic supports 8 in different environments, and the application occasions of the tightening positioning tool are increased.

Fig. 7 is a perspective view of the input member 112 in a half-section state, fig. 8 is a perspective view of the height adjusting member 113 in a half-section state, and fig. 9 is a perspective view of the output member 114 in a half-section state. Referring to fig. 4 and fig. 7 to 9, the height adjusting member 113 is in transmission connection with the input member 112 and the output member 114 through mutually meshed teeth, specifically, a tooth 1120 is disposed at the lower end of the input member 112, teeth 1130 are disposed at two ends of the height adjusting member 113, a tooth 1140 is disposed at the upper end of the output member 114, and the teeth 1130 at two ends of the height adjusting member 113 are respectively meshed with the teeth 1120 of the input member 112 and the teeth 1140 of the output member 114, so as to achieve transmission connection of the three. In other embodiments, different from those shown, the height adjustment member 113 may be connected to the input member 112 and the output member 114 by other transmission means, such as a screw transmission.

Fig. 10 and fig. 11 respectively show a partially enlarged schematic view of the supporting and positioning assembly, wherein the positioning base 22 includes a first positioning base 221 and a second positioning base 222 fixedly connected to each other, wherein the first positioning base 221 and the second positioning base 222 may be fixedly connected to each other by a fastening member 213 as shown in the figure, specifically, the first positioning base 221 has a positioning arc 2211 thereon, which can be matched and positioned with a flange outer side 2221 at a lower portion of the second positioning base 222, and meanwhile, the first positioning base 221 and the second positioning base 222 are further respectively provided with a connecting hole 2222 to allow the fastening member 213 to pass through and be fixedly connected to each other.

Fig. 12 is a schematic perspective view of the first positioning base in a half-section state, and fig. 13 is a schematic perspective view of the second positioning base in a half-section state, please refer to fig. 1 and fig. 12 to 13 in combination. The lower end surface of the bearing spring support 8 is provided with a convex part 83, the first positioning base 221 is provided with a positioning groove 2210 corresponding to the convex part 83, the convex part 83 is clamped into the positioning groove 2210 to enable the bearing spring support 8 to be matched and positioned with the first positioning base 221, and the bearing spring support 8 cannot rotate relative to the first positioning base 221 when being screwed down. Meanwhile, the upper end surface of the bearing spring support 8 is provided with a first connection hole 84, a second connection hole 2223 is formed in the second positioning base 222 corresponding to the position of the first connection hole 84, and after the bearing spring support 8 is matched and positioned with the first positioning base 221, the first connection hole 84 is communicated with the second connection hole 2223, so as to allow a fastener to pass through and fixedly connect the bearing spring support 8 and the second positioning base 222.

Fig. 14 shows a schematic perspective view of the positioning chassis 21 in a half-section state, please refer to fig. 12 and fig. 14 in combination, a through hole 210 allowing the end of the connecting mandrel 13 to pass through is provided in the positioning chassis 21, a positioning convex ring 211 is provided at the upper portion of the positioning chassis 21, and the positioning convex ring 211 can be matched and positioned with the positioning surface 2213 at the inner periphery of the first positioning base 221, so as to achieve rapid positioning of the first positioning base 221 on the positioning chassis 21.

Fig. 15 shows a perspective view of the first positioning base in a half-section state from another angle, wherein the supporting and positioning assembly 2 further comprises a positioning top plate 23, and fig. 16 shows a perspective view of the positioning top plate in a half-section state, wherein the positioning top plate 23 has a first through hole 230, and the positioning top plate 23 is supported and connected above the first positioning base 221 through a connecting shaft 24. Specifically, a shaft sleeve 231 is disposed in the first through hole 230, and the connecting shaft 24 passes through the shaft sleeve 231 and then is connected by a nut member 232.

Fig. 17 is a schematic perspective view of the power input assembly in a half-section state, and fig. 18 is a schematic perspective view of the power input assembly in a top view, please refer to fig. 15 to fig. 18 in combination, wherein the power input assembly 3 further includes a connecting protrusion 33, a positioning hole 233 is formed in the positioning top plate 23, and the power input assembly 3 is fixedly connected to the supporting and positioning assembly 2 by inserting the connecting protrusion 33 into the positioning hole 233.

In one embodiment, a stop pin 234 is further disposed in the positioning hole 233 of the positioning top plate 23 to further prevent the power input assembly 3 from being released from the supporting and positioning assembly 2.

Referring to fig. 7 and 17, an outer ring gear 1101 is disposed on an outer circumference of the input end 110 of the execution unit 11, an inner ring gear 321 is disposed on an inner circumference of the output unit 32 of the power input assembly 3, and the outer ring gear 1101 and the inner ring gear 321 are disposed in a meshing manner to realize torque transmission from the output unit 32 to the execution unit 11.

With continued reference to fig. 17, in one embodiment, the input unit 31 and the output unit 32 of the power input assembly 3 are in geared connection.

With continued reference to fig. 18, in one embodiment, the power input assembly 3 further includes a handle 34 to facilitate operation by a user.

The assembling process of the screwing and positioning tool in one or more of the above embodiments is as follows:

first, the first positioning base 221 and the positioning chassis 21 are connected.

Subsequently, the first positioning base 221 and the second positioning base 222 are connected.

In the state, the bearing spring support 8 is placed on the first positioning base 221, and the bearing spring support 8 is rotated to ensure that the convex portion 83 of the bearing spring support is aligned with the positioning groove 2210 of the first positioning base.

The bearing lock nut 9 is pre-screwed into the bearing spring support 8.

The output member 114 is placed over the bearing lock nut 9 in alignment with the facing teeth 1110 of the output member 114 and the inner peripheral teeth 92 of the bearing lock nut 9.

The height adjuster 113 is placed on the output member 114 in alignment with the teeth 1130 of the height adjuster 113 and the teeth 1140 of the output member 114.

The input member 112 is placed on the height adjuster 113, aligning the teeth 1130 of the height adjuster 113 and the teeth 1120 of the input member 112.

The connecting mandrel 13 is placed to be connected with the positioning chassis 21, and the limiting nut 14 is screwed down.

Place the stop plate 12 onto the mandrel 13 and tighten the stop nut 14.

The power input unit 3 is placed in alignment with the coupling protrusion 33 and the positioning hole 233, and screwed into the stopper pin 234.

Torque is input at the input unit 31 of the power input assembly 3 using a torque input.

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.

Claims

1. The utility model provides a screw up location frock for realize that gland nut and bearing bullet prop up the assembly, its characterized in that includes:

the tightening assembly comprises an execution unit, a limiting plate and a connecting mandrel, wherein the execution unit is hollow and comprises an input part, at least one height adjusting part and an output part, the input part is provided with an input end, the output part is provided with an output end, the output end is provided with an end face tooth part matched with inner peripheral teeth of a compression nut, two ends of the height adjusting part are respectively in transmission connection with the input part and the output part, the connecting mandrel penetrates through the execution unit, two ends of the connecting mandrel are respectively connected with the limiting plate and the positioning chassis, the limiting plate and the positioning chassis are respectively limited by the limiting nut to be separated from two ends of the connecting mandrel, and the limiting plate is tightly pressed on the input end of the execution unit by screwing the limiting nut; and the number of the first and second groups,

the power input assembly is fixedly connected with the supporting and positioning assembly and is provided with an input unit and an output unit, and the output unit can be matched and connected with the input end of the execution unit so as to transmit torque to the execution unit.

2. The tightening positioning tool according to claim 1, wherein the height adjusting member is in transmission connection with the input member and the output member through mutually meshed gears.

3. The tightening positioning tool according to claim 1, wherein the positioning bases comprise a first positioning base and a second positioning base which are fixedly connected, the lower end face of the bearing elastic support is provided with a convex part, and the upper end face of the bearing elastic support is provided with a first connecting hole;

the first positioning base corresponds the convex part and has been seted up the constant head tank, through with the convex part card is gone into the constant head tank so that the bearing bullet prop with first positioning base cooperation location, second positioning base corresponds first connecting hole is provided with the second connecting hole, and at cooperation locating position, first connecting hole with the second connecting hole is linked together to allow the fastener to pass and fixed connection the bearing bullet prop with second positioning base.

4. The tightening positioning tool according to claim 3, wherein the supporting and positioning assembly further comprises a positioning top plate, and the positioning top plate is connected above the first positioning base in a supporting mode through a connecting shaft;

5. The tightening and positioning tool according to claim 4, wherein a limit pin is arranged in the positioning hole.

6. The tightening and positioning tool according to claim 1, wherein an outer gear ring is arranged on the outer periphery of the input end, an inner gear ring is arranged on the inner periphery of the output unit, and the outer gear ring and the inner gear ring can be arranged in a meshed mode.

7. The tightening positioning tool according to claim 1, wherein the input unit and the output unit are in gear transmission.

8. The tightening positioning tool of claim 1, wherein the power input assembly further comprises a handle.

9. An assembly system of a compression nut comprises a force application device and a tightening and positioning tool, and is characterized in that the tightening and positioning tool is the tightening and positioning tool according to any one of claims 1 to 8;