KR102437223B1 - Method for filling buffer gas in aircraft damper and fixtures therefor - Google Patents

Abstract

The present invention relates to a buffer gas filling method and a buffer fixing jig for a buffer gas for aviation use. It relates to an aviation shock absorber fixing jig for fixing.

Description

Method for filling buffer gas in aircraft damper and fixtures therefor

The present invention relates to a buffer gas filling method and a buffer fixing jig for a buffer gas for aviation use. It relates to an aviation shock absorber fixing jig for fixing.

When an aircraft takes off or land, a shock absorber is placed on the landing gear to prevent impact from the road surface to the aircraft fuselage. At this time, the aircraft buffer is used by filling the inside of the cylinder with oil and gas. Since the gas inside the buffer leaks little by little depending on the number of times the buffer is used, it is necessary to charge the gas in the buffer when servicing the aircraft. At this time, the shock absorber is mixed with oil and gas, and when filling the gas, the oil mixed with the gas is ejected from the gas valve, causing a leak problem. In case of oil leakage, the lubrication and buffering action inside the shock absorber are not performed properly, so the shock absorption applied to the fuselage during the operation of the aircraft is not smooth. Finally, the reliability of the operation and safety of the aircraft using the buffer cannot be guaranteed. In order to solve this problem, in the case of a buffer for aviation, it is necessary to fill the leaked gas and oil through steady maintenance. However, the leaked gas in the buffer can be filled by aircraft users or mechanics, but in the case of leaked oil, the buffer manufacturer must have the buffer repaired to fill the oil. Therefore, the user of the shock absorber suffers a significant loss in terms of time and cost when servicing the shock absorber.

The present invention has been devised to solve the above problems, and an object of the present invention is to provide a buffer filling method that solves the problem of hydraulic oil leaking between the filling of the buffer gas of the aviation buffer, and a buffer fixing jig for mounting the buffer.

In the buffer gas filling method of the aviation buffer for charging the buffer gas to the aviation buffer including the upper ring, the lower ring, the buffer part, the upper valve and the lower valve of the present invention for solving the above problems, the buffer is fixed Fixed jig arrangement step of arranging the jig; a first height adjustment step of adjusting the height adjustment part of the shock absorber fixing jig; an upper ring fastening step of fixing the upper ring to an upper portion of the shock absorber fixing jig; a lower ring fastening step of fixing the lower ring to the lower portion of the shock absorber fixing jig; and a second height adjustment step of adjusting the height adjustment unit so that the upper and lower rings of the shock absorber face each other; stabilizing the buffer gas and hydraulic oil remaining in the buffer; and a buffer gas injection step of injecting a buffer gas through the upper valve and the lower valve after the stabilization step.

Here, the buffer gas filling method of the aviation buffer further includes a horizontal checking step of confirming whether the center point of the upper ring and the lower ring is horizontal to each other after the second height adjustment step.

In addition, the stabilization step is characterized in that the buffer is stabilized for 23 to 26 hours after the second height adjustment step.

Furthermore, the buffer gas injection step, characterized in that the pressure of the buffer gas injected into the upper valve is lower than the pressure of the buffer gas injected into the lower valve.

The buffer fixing jig of the present invention used in the buffer gas filling method of the above-described aviation buffer includes a fixing part for fixing the buffer fixing jig on the ground; Fastening parts disposed on the upper and lower parts of the fixing part so as to be fastened with the upper and lower sides of the shock absorber for aviation; And it is disposed on the upper end of the fixing unit, the height adjustment unit for adjusting the height of the position through the upper and lower adjustment of the upper side of the air shock absorber; includes.

In addition, the fixing portion includes a center of gravity for supporting the weight of the aircraft shock absorber fastened to the fastening portion; a movement auxiliary part disposed on the lower surface of the center of gravity to assist the movement of the shock absorber fixing jig; a holding part on which the height adjustment part and the fastening part are mounted; and a bar connecting the center of gravity and the mounting portion.

Here, the fastening part is formed to protrude from both sides of the lower fastening part disposed at the lower end of the fixing part, and includes an upper fastening part which is connected to the height adjusting part and moves vertically.

In this case, the lower fastening portion includes a lower body fixed by the fixing unit and a lower fastening member for fastening the lower body to the lower ring formed in the aviation shock absorber.

Furthermore, the upper fastening part is fixed to both sides of the fixing part, the upper body is connected to the height adjustment part and is fixed to both sides of the fixing part to guide the vertical movement of the upper body and the aviation It includes an upper fastening member for fastening the upper ring and the upper body formed in the shock absorber.

In addition, the height adjustment part is disposed on the upper surface of the fixing part and protrudes to the position of the fastening part The protrusion passes through the protruding end of the protrusion and is connected to the fastening part disposed on the upper part of the fixing part, and the height adjustment device and the height adjustment and a handle for rotating the device, wherein the height adjusting unit adjusts the height of the fastening unit disposed above the fixing unit.

The buffer gas filling method and buffer fixing jig of the aviation shock absorber of the present invention according to the above configuration solves the problem of hydraulic oil leaking between the buffer gas charging of the aviation shock absorber. Alternatively, since the mechanic can easily charge the buffer gas of the buffer, there is an effect of saving the maintenance cost and time of the buffer for aviation.

1 is a flowchart showing a buffer gas filling method of the aviation buffer of the present invention.
Figure 2 is a flow chart showing an embodiment of the buffer gas filling method of the aviation buffer of the present invention.
Figure 3 is a flow chart showing an embodiment of the buffer gas filling method of the aviation buffer of the present invention.
Figure 4 is a flow chart showing an embodiment of the buffer gas filling method of the aviation buffer of the present invention.
Figure 5 is a perspective view showing the shock absorber fixing fixture of the present invention.
6 is an enlarged enlarged view of the height adjustment part and the upper fastening part of the shock absorber fixing jig of the present invention.
7 is a conceptual diagram showing a method of using the shock absorber fixing jig of the present invention.

Hereinafter, the technical idea of the present invention will be described in more detail with reference to the accompanying drawings.

Since the accompanying drawings are merely examples shown to explain the technical idea of the present invention in more detail, the technical idea of the present invention is not limited to the form of the accompanying drawings.

As shown in Figure 1, the buffer gas filling method (S1000) of the aviation buffer of the present invention is a buffer fixing fixture arrangement step (S100), a first height adjustment step (S200), an upper ring fastening step (S300), a lower ring It includes a fastening step (S400), a second height adjustment step (S500), a stabilization step (S600) and a buffer gas injection step (S700). Further, the aviation buffer for performing the above several steps relates to an aviation buffer including an upper ring, a lower ring, a buffer, an upper valve and a lower valve. Each step is described in detail as follows.

The fixing jig arrangement step (S100) is a step of disposing a jig that can be fixed and maintained in a uniform state for a long time by disposing the aviation shock absorber. It may have an embodiment using several fixing fixtures, such as the shock absorber fixing fixture of the present invention to be described later.

The first height adjustment step (S200) is a step of adjusting the height of the fixing jig for fixing the air shock absorber. There are several methods for this step depending on the shape of the fixture, but in general, the weight and size of the aviation shock absorber are quite large. It is a step to adjust the height of the

The upper ring fastening step (S300) is a step of fastening the upper ring of the aviation shock absorber to the upper part of the fixing jig which performed the first height adjustment step (S200).

The lower ring fastening step (S400) is a step of fastening the lower ring of the aviation shock absorber to the lower part of the aviation shock absorber fixing jig. At this time, through height adjustment, the lower ring position of the aviation shock absorber fastened in the upper ring fastening step (S300) is aligned with the lower fastening position of the fixing jig.

conclude

The second height adjustment step (S500) is the upper ring fastening step (S300) and the lower ring fastening step (S400) through the height adjustment of the buffer fixing jig for aviation, the upper ring and the lower ring fastened to the shock absorber fixing jig face each other This is a step to adjust the height adjuster so that you can see it. In the second height adjustment step (S500), the height adjustment is performed by adjusting the height of the fastening member fastened with the upper ring and the lower ring to press the upper ring to the upper side and the lower ring to the lower side so that the aviation shock absorber vibrates in the shock absorber fixing jig It is a step to prevent it from being shaken by external factors such as

The stabilization step (S600) is a step in which the aviation buffer is maintained for a predetermined time in a state in which it is fastened to the buffer fixing jig. In this case, the predetermined time is preferably 23 to 26 hours. Hydraulic oil and buffer gas mixed inside the aviation buffer through the stabilization step (S600) are separated from the hydraulic oil to the lower side and the buffer gas to the upper side by gravity. has the effect of preventing leakage of

The buffer gas injection step (S700) is a step of injecting the buffer gas into the aviation buffer that has performed the stabilization step (S600). In the case of a buffer for aviation, valves are formed on the upper and lower parts, and the buffer gas injection part is coupled to the upper and lower valves and then the buffer gas is charged. At this time, the buffer gas is preferably made of an inert gas such as nitrogen.

As shown in Figure 2, the buffer gas filling method (S1000) of the buffer for aviation of the present invention has an embodiment including a horizontal check step (S510).

The horizontal confirmation step (S510) is a second height adjustment step ( After S500), it is a step of determining whether to keep each other horizontal. Here, the horizontal is a step of determining whether the aviation shock absorber fastened in the aviation shock absorber fixing jig is maintained perpendicular to the ground by pressing the lower ring downward and the upper ring upward by adjusting the height of the upper ring. It is desirable to check whether it is horizontal by measuring between the center points of

As shown in Figure 3, the method for charging the buffer gas of the aviation buffer of the present invention (S1000), the stabilization step (S600) further includes the step of confirming whether the aviation buffer is mounted on the aviation buffer fixing jig for a user set time do. At this time, the stabilization step (S600) includes the step of determining whether the aviation buffer is mounted on the aviation buffer fixing jig for 23 to 26 hours. 4, in the buffer gas filling method (S1000) of the aviation buffer of the present invention, in the buffer gas injection step (S700), the pressure of the buffer gas injected into the upper valve is lower than the pressure of the buffer gas injected into the lower valve as shown in FIG. It is desirable to minimize the loss of hydraulic oil leaking from the aviation shock absorber by maintaining it.

As shown in FIG. 5 , the shock absorber fixing jig 1000 of the present invention for using the above-described buffer gas filling method of the aviation shock absorber includes a fixing part 100 , a fastening part 200 and a height adjustment part 300 . include Each part is explained as follows.

The fixing part 100 fixes the shock absorber fixing jig to the ground, and serves to hold the center so that the fastening part 200 and the height adjustment part 300 are mounted. Therefore, it is preferable to form the lower part in a shape in which the entire center of gravity of the shock absorber fixing jig can be disposed in the lower part as shown in FIG. 5 in order to be disposed on the ground.

The fastening part 200 is disposed on the upper and lower sides of the fixing part to which the shock absorber fixing jig is fastened, and serves to be respectively fastened with the upper and lower rings of the aviation shock absorber.

The height adjustment part 300 is mounted on the upper part of the fixing part 100 and serves to adjust the height of the fastening part 200 disposed on the upper part. According to the height adjustment of the height adjustment unit 300, it facilitates the fastening of the aviation shock absorber mounted on the shock absorber fixing jig, and after the aviation shock absorber is fastened to the buffer fixing jig, the fastening unit 200 applies to the upper and lower rings The pressure is regulated.

As shown in FIG. 5, the shock absorber fixing jig 1000 of the present invention includes the fixing part 100, the fastening part 200 and the height adjusting part 300 as detailed components. The fixing part 100 includes a center of gravity 110 , a movement auxiliary part 120 , a rod part 130 , and a mounting part 140 . In addition, the fastening part 200 includes a lower fastening part 210 and an upper fastening part 220 . Finally, the height adjustment unit 300 includes a protrusion 310 , a height adjustment device 320 and a handle. The detailed components of each part are described as follows.

The center of gravity 110 serves to hold the center of gravity when the shock absorber fixing jig 1000 is disposed on the ground. Therefore, although the center of gravity 110 is formed in a cross shape in FIG. 5, this may vary depending on the place of use and location.

The movement assistance unit 120 is disposed on the lower surface of the center of gravity 110 and serves to assist the movement of the shock absorber fixing jig (1000). It goes without saying that a stopper for limiting the movement of the movement auxiliary unit 120 may be additionally disposed.

The rod 130 is extended by a predetermined height than the length of the aviation shock absorber mounted in the center of gravity 110 so as to mount the fixing part 100 and the height adjustment part 300 fastened to the upper ring of the aviation shock absorber. The bar 130 may have a center of gravity 110 and one or more ribs to withstand the weight of the mounted aviation shock absorber.

The mounting part 140 is formed at the upper end of the rod part 130 and serves as a platform on which the fastening part 200 and the height adjusting part 300 disposed on the upper side are disposed. Therefore, it is preferable to be disposed in a shape protruding a predetermined length from the thickness or diameter of the rod portion 130 .

The lower fastening part 210 is formed on the lower side of the fixing part 100 of the fastening part 200 and serves to be fastened with the lower ring of the aviation shock absorber. Referring to FIGS. 5 and 6 , it is disposed above the center of gravity 110 . The lower fastening part 210 includes a lower fastening member 212 for fastening the lower body 211 and the lower ring of the aviation shock absorber to the lower body 211 arranged and fixed under the fixing part 100 . .

The upper fastening part 220 is formed on the upper side of the fixing part 100 of the fastening part 200 and serves to be fastened with the upper ring of the aviation shock absorber. The upper fastening part 220 is disposed on the upper side of the fixing part 100, and is connected to the height adjustment part 300 to move the upper body 221 up and down in a straight line, and the lower ring and the upper body 221 of the aviation shock absorber. It includes an upper fastening member 222 fastening to each other. At this time, unlike the lower fastening part 210 , both sides of the fixing part 100 , in detail, both sides of the mounting part 140 are fixed to guide the vertical movement of the upper body 221 according to the adjustment of the height adjusting part 300 . A member 223 is further included.

The height adjusting unit 300 is disposed on the upper surface of the mounting unit 140 in detail on the upper surface of the fixing unit 100 to arrange the height adjusting unit 300 at the position of the upper body 221 . and the height adjusting device 320 is arranged to be connected to the upper fastening part 220 in detail with the upper body 221 . Therefore, the height adjusting device 320 connects the upper body 221 and the handle 330 so that the upper body 221 can move vertically with the height adjusting device 320 according to the rotation of the handle, at this time the guide member 223 . guides the vertical movement of the upper body 221 .

As shown in FIG. 7, the operation method of the shock absorber fixing jig 1000 of the present invention will be described as follows. As shown in Fig. 7(a), the shock absorber fixing jig 1000 of the present invention is placed on the ground, and then the height of the upper fastening unit 220 is moved downward through the adjustment of the height adjusting unit 300, and then the upper fastening is performed. The upper ring 11 of the aviation shock absorber 10 is fastened to the part 220 . Thereafter, the height of the upper fastening part 220 is raised by controlling the height adjusting part 300 , and then the lower ring 14 is fastened to the lower fastening part 210 . Thereafter, as shown in FIG. 7(b), by manipulating the height adjustment unit 300 to move the upper fastening unit 220 upward, the upper ring 11 is pressed upward and the lower ring 14 is pressed downward. To be completely fixed to the shock absorber fixing fixture (1000). Furthermore, according to the shape of the buffer fixing jig 1000, at least one or more aviation buffers 10A, 10B are fastened to a single buffer fixing jig 1000 as shown in FIG. can be recharged

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and detailed description will be given. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but it is understood that other components may exist in between. it should be

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention as claimed in the claims.

1000: shock absorber fixture
100: fixed part 110: center of gravity
120: movement auxiliary unit 130: bar portion
140: mounting part 200: fastening part
210: lower fastening part 211: lower body
211: lower fastening member 220: upper fastening part
221: upper body 222: upper fastening member
223: guide member 300: height adjustment unit
310: protrusion 320: height adjustment device
330: handle
10, 10A, 10B: Aviation buffer 11: Upper ring
12: upper valve 13: lower valve
14: lower ring

Claims (10)

In the buffer gas filling method of the aviation buffer for filling the buffer gas in the aviation buffer including an upper ring, a lower ring, a buffer part, an upper valve and a lower valve,
Fixing fixture arrangement step of arranging the shock absorber fixture;
a first height adjustment step of adjusting the height adjustment part of the shock absorber fixing jig;
an upper ring fastening step of fixing the upper ring to an upper portion of the shock absorber fixing jig;
a lower ring fastening step of fixing the lower ring to the lower portion of the shock absorber fixing jig;
a second height adjustment step of adjusting the height adjustment unit so that the upper and lower rings of the shock absorber face each other;
stabilizing the buffer gas and hydraulic oil remaining in the buffer; and
a buffer gas injection step of injecting a buffer gas through the upper valve and the lower valve after the stabilization step;
A buffer gas filling method of an aviation buffer comprising a.
According to claim 1, wherein the buffer gas filling method of the buffer for aviation
After the second height adjustment step, a horizontal check step of confirming whether the center points of the upper ring and the lower ring are horizontal to each other; the buffer gas charging method of the aviation shock absorber further comprising a.
The method of claim 1, wherein the stabilizing step
After the second height adjustment step, the buffer gas charging method of the buffer gas for aviation, characterized in that for stabilizing the buffer for 23 to 26 hours.
According to claim 1, wherein the buffer gas injection step,
The buffer gas filling method of the buffer gas for aviation, characterized in that the pressure of the buffer gas injected into the upper valve is lower than the pressure of the buffer gas injected into the lower valve.
[Claim 5] In the buffer fixing fixture used in the buffer gas filling method of any one of claims 1 to 4,
a fixing part for fixing the shock absorber fixing jig on the ground;
Fastening parts disposed on the upper and lower parts of the fixing part so as to be fastened with the upper and lower sides of the shock absorber for aviation; and
It is disposed on the upper end of the fixing unit, and includes a;
the fixing part
a center of gravity for supporting the weight of the aircraft shock absorber fastened to the fastening portion;
a movement auxiliary part disposed on the lower surface of the center of gravity to assist the movement of the shock absorber fixing jig;
a holding part on which the height adjustment part and the fastening part are mounted; and
a bar connecting the center of gravity and the mounting portion;
A shock absorber fixture comprising a.
delete [Claim 5] In the buffer fixing fixture used in the buffer gas filling method of any one of claims 1 to 4,
a fixing part for fixing the shock absorber fixing jig on the ground;
Fastening parts disposed on the upper and lower parts of the fixing part so as to be fastened with the upper and lower sides of the shock absorber for aviation; and
It is disposed on the upper end of the fixing unit, and includes a;
The fastening part
The lower fastening part disposed at the lower end of the fixing part
An upper fastening part that is formed to protrude from both sides of the height adjustment part and is connected to the height adjustment part and moves up and down
A shock absorber fixture comprising a.
The method of claim 7, wherein the lower fastening portion
a lower body fixed in the fixing part; and
A lower fastening member for fastening the lower ring formed in the aviation shock absorber and the lower body
A shock absorber fixture comprising a.
The method of claim 8, wherein the upper fastening portion
The upper body is fixed on both sides of the fixing part, and is connected to the height adjustment part and moves vertically
a guide member fixed to both sides of the fixing part to guide the vertical movement of the upper body; and
An upper fastening member for fastening the upper ring formed in the aviation shock absorber and the upper body
A shock absorber fixture comprising a.
[Claim 5] In the buffer fixing fixture used in the buffer gas filling method of any one of claims 1 to 4,
a fixing part for fixing the shock absorber fixing jig on the ground;
Fastening parts disposed on the upper and lower parts of the fixing part so as to be fastened with the upper and lower sides of the shock absorber for aviation; and
It is disposed on the upper end of the fixing unit, and includes a;
The height adjustment unit
A protrusion disposed on the upper surface of the fixing part and protruding to the position of the fastening part
a height adjusting device connected to the fastening part disposed on the upper part of the fixing part through the protruding end of the protruding part; and
Including a handle for rotating the height adjustment device
The height adjustment part is a shock absorber fixing fixture, characterized in that for adjusting the height of the fastening part disposed on the upper part of the fixing part.

Images