CN113386079B - Mounting method, tool and fastening kit for special-shaped lock ring - Google Patents
Mounting method, tool and fastening kit for special-shaped lock ring Download PDFInfo
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- CN113386079B CN113386079B CN202010165363.6A CN202010165363A CN113386079B CN 113386079 B CN113386079 B CN 113386079B CN 202010165363 A CN202010165363 A CN 202010165363A CN 113386079 B CN113386079 B CN 113386079B
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- bolt
- lock ring
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- hole
- shaped lock
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
Abstract
In order to improve the installation efficiency of the special-shaped lock ring, an installation method, a tool and a fastening kit of the special-shaped lock ring are provided, wherein the installation method of the special-shaped lock ring provides a special-shaped lock ring simulation plate, the special-shaped lock ring simulation plate is provided with a first hole and a second hole, and both the first hole and the second hole are provided with spline angular scribed lines; screwing the first bolt and the second bolt to be attached to the attaching surface; the first hole corresponds to the first bolt, the second hole corresponds to the second bolt, and then the special-shaped lock ring simulation plate is sleeved at the light sections of the first bolt and the second bolt; tightening the first and second bolts, the tightening process for each of the bolts being: screwing the bolt, and stopping screwing when the torque meets the requirement and any spline angular position of the bolt head of the bolt is aligned with the spline angular scale mark; and removing the special-shaped lock ring simulation plate and installing a real special-shaped lock ring.
Description
Technical Field
The invention relates to a mounting method and a tool of a threaded connection anti-loosening device, and also relates to a fastening kit for fastening parts.
Background
The threaded connection is the main connection form between casings of aircraft engines, and in order to prevent the failure of the threaded connection, mechanical anti-loosening measures are usually adopted. Fig. 1 and 2 show an embodiment, in which casings 1, 2, and 3 are connected by bolts, the bolts are connected by a dodecagonal bolt head spline 4 for looseness prevention, a double-locking ring 6 is sleeved on the heads of two adjacent bolts, the hole shape of the double-locking ring 6 is consistent with the structure of the bolt head spline 4, and the double-locking ring cannot rotate after installation, so that looseness prevention of the bolts is realized.
However, the installation difficulty of the double interlocking ring is large, and two prepositive conditions need to be ensured when the bolt is screwed down:
1. tightening the bolt to meet the specified torque;
2. the spline angles of the heads of adjacent bolts need to be kept consistent.
Under the conventional assembly mode, the installation of the double interlocking ring is realized by adopting a test mode, after the torque is applied to two adjacent bolts, the trial assembly of the double interlocking ring is carried out, and when the double interlocking ring is not installed, the tightening torque of one bolt is increased or reduced within a specified torque range until the head spline angles of the two adjacent bolts need to be consistent. In the test process, the spline angle at the head part of the bolt is difficult to visually identify and completely depends on the experience of an operator, so that the installation efficiency of the double-interlocking ring is low, and the installation position of the bolt can be found after multiple attempts to complete the installation of the double-interlocking ring.
Disclosure of Invention
The invention aims to provide a method and a tool for installing a special-shaped lock ring, so as to improve the installation efficiency of the special-shaped lock ring.
The invention also provides a fastening kit which can efficiently complete fastening and looseness prevention.
The mounting method of the special-shaped lock ring for achieving the purpose comprises the following steps:
providing a special-shaped lock ring simulation plate, wherein the special-shaped lock ring simulation plate is provided with a first hole and a second hole, and the first hole and the second hole are both provided with spline angular scribed lines;
screwing the first bolt and the second bolt to be attached to the attaching surface;
the first hole corresponds to the first bolt, the second hole corresponds to the second bolt, and then the special-shaped lock ring simulation plate is sleeved at the light sections of the first bolt and the second bolt;
tightening the first and second bolts, the tightening process for each of the bolts being: screwing the bolt, and stopping screwing when the torque meets the requirement and any spline angular position of the bolt head of the bolt is aligned with the spline angular scale mark;
and removing the special-shaped lock ring simulation plate and installing a real special-shaped lock ring.
In one or more embodiments of the installation method, each of the first and second holes has a plurality of the spline angle graduations spaced apart in a circumferential direction, and the plurality of spline angle graduations are arranged to be simultaneously aligned with a plurality of spline angles of a corresponding bolt.
In one or more embodiments of the installation method, each bolt is screwed by using a force limiting wrench, and the thickness of a tightening head of the force limiting wrench is reduced, so that after the bolt tightening head is sleeved on the bolt, part of splines on the head of the bolt can be exposed.
In one or more embodiments of the installation method, the first and second holes are configured to pass through the head portions of the first and second bolts.
In order to realize the purpose, the mounting tool for the special-shaped lock ring comprises a special-shaped lock ring simulation plate, wherein the special-shaped lock ring simulation plate is provided with a first hole and a second hole, both the first hole and the second hole are provided with spline angular scribed lines, and the inner diameters of the first hole and the second hole are not smaller than the maximum aperture of a lock ring hole of the special-shaped lock ring.
In one or more embodiments of the installation tool for the special-shaped lock ring, the first hole and the second hole are respectively provided with a plurality of circumferentially spaced spline angle scribed lines, and the plurality of spline angle scribed lines are arranged to be aligned with a plurality of spline angles of corresponding bolts at the same time.
The fastening kit comprises at least one pair of bolts, at least one special-shaped locking ring, at least one mounting tool for the special-shaped locking ring and at least one bolt.
In one or more embodiments of the fastening kit, the profiled locking collar simulating plate and the profiled locking collar have the same outer contour.
In one or more embodiments of the fastening kit, the fastening kit further comprises a force limiting wrench having a bolt head with a reduced thickness such that a portion of the splines of the bolt head may be exposed after the bolt head is received over the bolt.
The technical scheme has the following beneficial effects:
the special-shaped lock ring simulation plate is provided with at least one standard scale for lock ring spline angular orientation, the first bolt and the second bolt are screwed and limited according to the direction indicated by the standard scale, and after any spline of the bolt head is aligned to the standard scale, the angular orientation of the splines of the two bolt heads can be ensured to be consistent, so that the special-shaped lock ring can be assembled in place at one time, the trial time is reduced, and the installation efficiency of the special-shaped lock ring is improved;
in the screwing process, the spline angle of the head part of the bolt is screwed according to the spline angle of the special-shaped lock ring, and the bolt has guidance performance in screwing;
the mounting tool of the special-shaped lock ring is simple, and the production cost is low.
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 anti-loose diagram of a special-shaped locking ring applied between casings of an aircraft engine.
Fig. 2 is a partial perspective view of the application shown in fig. 1.
Fig. 3 is a perspective view of the shaped locking collar.
Fig. 4 is a schematic view of the special-shaped locking ring applied to two bolts for preventing looseness.
Fig. 5 is a schematic view of a fastening kit.
Fig. 6 is a perspective view of a fastening kit.
Fig. 7 is a corresponding schematic view of the profiled lock ring and the profiled lock ring simulation plate.
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 disclosure, but these are by way of example only and are not limiting as to the scope of the invention. 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.
As shown in fig. 3 and 4, the special-shaped lock ring takes a double interlocking lock ring as an example, and the special-shaped lock ring 6 has two lock ring holes 61. The retainer hole 61 is a spline hole, and may be other non-circular shaped holes. The two lock ring holes 61 correspond to the bolt heads of the two bolts 71 and 72, and the bolt heads are splines, so that after the special-shaped lock ring 6 is sleeved on the bolt heads of the two bolts 71 and 72, the two bolts 71 and 72 are correspondingly locked and are difficult to loosen.
In the embodiment, the bolt head spline is controllable through a double-bolt related screwing mode, namely at least one standard scale for the angular direction of the spline of the lock ring is arranged on the special-shaped lock ring simulation plate, the first bolt and the second bolt are screwed and limited according to the direction indicated by the standard scale, after any spline of the bolt head is aligned to the standard scale, the angular direction of the spline of the two bolt heads can be ensured to be consistent, the special-shaped lock ring can be assembled in place at one time, the trial time is reduced, and the installation efficiency of the special-shaped lock ring is improved.
To facilitate the installation of the profiled locking ring, the installation tool 8 of the profiled locking ring comprises a profiled locking ring simulation plate 80, as shown in fig. 7. The special-shaped lock ring simulation plate 80 corresponds to the two lock ring holes 61 of the special-shaped lock ring 6 and is provided with a first hole 81 and a second hole 82, the first hole 81 and the second hole 82 are both provided with spline angular scribed lines 810, and the inner diameters of the first hole 81 and the second hole 82 are not smaller than the maximum aperture of the lock ring holes 61 of the special-shaped lock ring. In fig. 7, each of first aperture 81 and second aperture 82 has four splined angular score lines 810. The four spline angular score lines 810 are circumferentially spaced at 90 intervals, generally corresponding to the top, bottom, left and right of the operator's visual direction. The four spline angle graduations 810 correspond to the angles of the lock ring holes 61, and if the first hole 81 and the second hole 82 are overlapped with the two lock ring holes 61, the four spline angle graduations 810 are aligned with the upper, lower, left and right angles of the lock ring holes 61. Embodiments of score line 810 are identified by ink or paint or by raised or recessed lines or otherwise.
As shown in fig. 5 and 6, the method for installing the special-shaped lock ring by means of the installation tool 8 shown in fig. 7 comprises the following steps:
screwing the first bolt 71 and the second bolt 72 to be attached to the attaching surface 11;
the first hole 81 corresponds to the first bolt 71, the second hole 82 corresponds to the second bolt 72, and then the special-shaped locking ring simulation plate 8 is sleeved at the light sections of the first bolt 71 and the second bolt 72;
the first bolt 71 and the second bolt 72 are tightened, the tightening process for each of them being: screwing the bolt, and stopping screwing when the torque meets the requirement and any spline angle 610 at the head of the bolt aligns with the corresponding spline angle scale mark 810 at the position;
the special-shaped lock ring simulation plate 80 is removed, and the real special-shaped lock ring 6 is installed. When the real special-shaped lock ring 6 is installed, because the first bolt 71 and the second bolt 72 are already in place, the problems of the prior art that the installation is not carried out, repeated attempts are carried out, the operation is dependent on the experience of an operator and the like do not exist, and the installation can be carried out in place at one time.
Because the first hole 81 and the second hole 82 are respectively provided with a plurality of spline angle scribed lines 810 which are arranged at intervals of 90 degrees in the circumferential direction, the plurality of spline angle scribed lines 810 can be aligned with a plurality of spline angles 610 of corresponding bolts at the same time, after any spline angle scribed line 810 is aligned with any spline angle 610, the bolt is installed in place within a specified torque range, and the special-shaped lock ring only needs to be installed once, so that the assembly efficiency can be improved. In another embodiment, the number of spline angle cuts 810 is one or more. The spacing between the plurality of spline angle scorelines 810 is greater than or less than 90.
As shown in fig. 5 and 6, each bolt is driven by the force limiter 9, and the thickness of the tightening head 91 of the force limiter 9 is reduced, so that after the bolt tightening head 91 is sleeved on the bolt, part of the spline 720 on the head of the bolt can be exposed, and the exposed part of the spline 720 is convenient for an operator to observe.
In the foregoing embodiment, the first and second holes 81 and 82 are configured to pass through the heads of the bolts of the first and second bolts 71 and 72 to reach the polish rod of each bolt. In another embodiment, the profiled locking ring simulation plate 80 can be formed by two-part butt joint, and as an alternative, the first hole 81 and the second hole 82 have a diameter larger than the polished rod of each bolt but smaller than the outer diameter of the head of the bolt.
The foregoing embodiment has the following features:
1. the bolt is guided to be screwed through a mode of replacing the simulation plate, and the screwing process of the bolt is clearly guided;
2. standard scales are arranged according to at least one position of the special-shaped lock ring, such as key angle positions of an upper spline, a lower spline, a left spline and a right spline, and after any spline of the bolt head is aligned to the standard scales, the angular alignment of the splines of the two bolt heads can be ensured;
3. the special-shaped lock ring simulation plate is arranged at the light section of the head of the bolt, and can simulate the angular orientation of a spline of the special-shaped lock ring without hindering the rotary tightening of the bolt;
4. both bolts are screwed down and limited by reference to standard scale marks;
5. the thickness of the bolt tightening head is reduced, and a part of splines can be exposed after the bolt tightening head is installed;
6. in order to facilitate observation, a plurality of scale marks are arranged, and after any spline is aligned with the scale marks in an angular direction, the angular direction consistency of the two bolts can be judged.
The foregoing embodiment has the following advantages:
the spline position of the head of the bolt is controlled in a unified reference line mode, so that the special-shaped lock ring is installed in place at one time, and the installation efficiency of the special-shaped lock ring is improved;
in the screwing process, the spline angle of the head of the bolt is screwed according to the spline angle of the special-shaped lock ring, and the bolt has guidance property in screwing;
the mounting tool of the special-shaped lock ring is simple, and the production cost is low.
With the foregoing embodiments, it can also be understood a fastening kit comprising at least one pair of bolts 71, 72, at least one profiled locking collar 6, wherein one profiled locking collar 6 corresponds to one pair of bolts 71, 72, and at least one profiled locking collar installation tool 8. Through the complete set of packing or selling, can improve the convenience to the user from this, improve user's consumption experience, on the other hand also can increase producer, seller's profit.
As shown in fig. 7, the profiled lock ring simulation plate 80 has the same outer contour as the profiled lock ring 6. Because the outer contour is the same, the packaging can be overlapped, the storage space is reduced, and the product transportation is convenient.
With the foregoing embodiment, it can also be appreciated that the fastening kit may also optionally include a torque wrench 9, the torque wrench 9 having a reduced thickness of the tightening head 91, such that a portion of the spline 720 on the head of the bolt may be exposed after the tightening head of the bolt is tightened on the bolt. This may further improve the convenience of the user.
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 (9)
1. The mounting method of the special-shaped lock ring is characterized by comprising the following steps:
providing a special-shaped lock ring simulation plate, wherein the special-shaped lock ring simulation plate is provided with a first hole and a second hole, and the first hole and the second hole are both provided with spline angular scribed lines;
screwing the first bolt and the second bolt to be attached to the attaching surface;
the first hole corresponds to the first bolt, the second hole corresponds to the second bolt, and then the special-shaped lock ring simulation plate is sleeved at the light section parts of the first bolt and the second bolt;
tightening the first and second bolts, the tightening process for each of the bolts being: screwing the bolt, and stopping screwing when the torque meets the requirement and any spline angular position of the bolt head of the bolt is aligned with the spline angular groove;
and removing the special-shaped lock ring simulation plate and installing a real special-shaped lock ring.
2. The method of installation of claim 1, wherein each of the first and second bores has a plurality of said angular spline score lines circumferentially spaced and arranged to simultaneously align with a plurality of spline angles of a corresponding bolt.
3. The method of installation of claim 1, wherein each bolt is driven using a torque wrench, the thickness of the head of the torque wrench being reduced so that a portion of the splines on the head of the bolt are exposed after the head of the bolt is received over the bolt.
4. The method of installation of claim 1, wherein the first and second holes are configured to pass through the heads of the first and second bolts.
5. The mounting tool for the special-shaped lock ring is characterized by being used for realizing the mounting method of the special-shaped lock ring according to claim 1, and the mounting tool comprises a special-shaped lock ring simulation plate, the special-shaped lock ring simulation plate is provided with a first hole and a second hole, the first hole and the second hole are provided with spline angular scribed lines, and the inner diameter of the first hole and the inner diameter of the second hole are not smaller than the maximum aperture of the lock ring hole of the special-shaped lock ring.
6. The profiled lock ring installation tool as set forth in claim 5, wherein said first bore and said second bore each have a plurality of said angular spline score lines circumferentially spaced and positioned to simultaneously align with a plurality of spline angles of a corresponding bolt.
7. A fastening kit comprising at least one pair of bolts, at least one profiled locking collar, one profiled locking collar corresponding to a pair of bolts, characterized in that it further comprises at least one installation tool for a profiled locking collar according to claim 5 or 6.
8. The fastening kit of claim 7, wherein the contoured lock ring simulated plate is the same as the outer profile of the contoured lock ring.
9. The fastening kit of claim 7, further comprising a torque wrench having a reduced thickness head such that a portion of the splines of the head of the bolt may be exposed after the head of the bolt is received over the bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010165363.6A CN113386079B (en) | 2020-03-11 | 2020-03-11 | Mounting method, tool and fastening kit for special-shaped lock ring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010165363.6A CN113386079B (en) | 2020-03-11 | 2020-03-11 | Mounting method, tool and fastening kit for special-shaped lock ring |
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| Publication Number | Publication Date |
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| CN113386079A CN113386079A (en) | 2021-09-14 |
| CN113386079B true CN113386079B (en) | 2022-11-25 |
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| CN113386079A (en) | 2021-09-14 |
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