Pneumatic shock absorber and its management system

Abstract

To provide a pneumatic anti-shock material which secures convenience in replacement and maintenance of a pneumatic anti-shock material management device.SOLUTION: A pneumatic anti-shock material includes: a ring-shaped metal fitting housing 20 which is mounted on at least one end of a pneumatic anti-shock material 1, and forms a penetration part penetrating inside and outside the pneumatic anti-shock material 1; a plate-like flange 110 which is mounted on a through part 24 so as to block inside and outside the pneumatic anti-shock material 1; a radio transmitter 130 which is mounted on the front face of the flange 110 defining a surface formed in an external direction of the pneumatic anti-shock material; a cover 140 which is mounted on the front face of the flange 110 so as to protect a region where the radio transmitter 130 is mounted; a shaft which has a prescribed length and is mounted on the rear face of the flange 110; a position sensor which is mounted on the end in an internal direction of the shaft and generates position information of the pneumatic anti-shock material 1; and a reflection member which is connected to the shaft between the flange 110 and the position sensor and is rotatable around the shaft.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a pneumatic shock absorber and its management system. More specifically, it relates to a pneumatic shock absorber provided on the wall surface of a quay wall or the ship side for preventing damage to the hull and the quay wall when a ship approaches the shore or comes alongside, and a management system for managing the same.

Background Art

[0002] A pneumatic shock absorber is provided on the wall surface of a quay wall or the ship side to prevent damage to the hull and the quay wall when a ship approaches the shore or comes alongside.

[0003] The pneumatic shock absorber is configured to enclose compressed air in a structure in the form of an airbag made of an elastic material such as rubber, and to buffer the impact when a ship approaches the shore or comes alongside by means of air pressure. For example, the pneumatic shock absorber is fixed to the wall surface of a quay wall or the ship side with a fixing member, and is positioned so that the wall surface and the ship do not come into direct contact when the ship approaches the shore or comes alongside, thereby preventing impact.

[0004] If the shock absorber detaches from the proper position, the wall surface and the ship can come into direct contact when the ship approaches the shore or comes alongside, which can cause damage to the hull and the quay wall. In addition, if the pneumatic shock absorber does not always maintain an appropriate air pressure, the impact prevention effect may decrease. Accordingly, for the management of the pneumatic shock absorber, a shock absorber management device equipped with various sensors such as a position sensor and a pressure sensor can be arranged inside the shock absorber.

[0005] However, when a part of the shock absorber management device is not housed in a sealed container, there is a problem that the sensor malfunctions due to seawater intrusion or impact and is exposed to the outside. Also, when the shock absorber management device is housed in a sealed container as a whole but a communication hole for propagating air pressure is formed inside, there is a problem that seawater intrudes through the communication hole or the like and the sensor malfunctions.

[0006] Therefore, in order to prevent failures that occur when the shock absorber management device is exposed to the outside, the shock absorber management device is positioned inside the shock absorber or provided in a casing with a sealed structure. As a result, since the shock absorber management device is inside the shock absorber or sealed by the casing with a sealed structure, seawater penetration is prevented in the shock absorber management system, and it can be protected without being directly exposed to gases or liquids.

[0007] However, when the shock absorber management device is installed inside the shock absorber or in a casing with a sealed structure in this way, in order to perform installation work, replacement work, or particularly simple replacement work such as battery replacement of the shock absorber management device, the shock absorber has to be lifted onto land to remove the internal air, and then the shock absorber management device has to be taken out from inside the shock absorber or separated from the casing with the sealed structure. Therefore, there has been a problem that installing, replacing, and maintaining the pneumatic shock absorber management system requires a great deal of time and labor.

[0008] In addition, since the pneumatic shock absorber management device is fixedly arranged in a floating state inside the shock absorber or in a casing with a sealed structure, there may be a problem that the position sensor (for example, GPS) is restricted from receiving signals from the air or cannot receive accurate position signals according to changes in the position or posture of the shock absorber.

[0009] Therefore, there is a need for a pneumatic shock absorber and a pneumatic shock absorber management system to solve this problem.

Summary of the Invention

Problems to be Solved by the Invention

[0010] An object of the present invention is to provide a pneumatic shock absorber that ensures convenience in the replacement and maintenance of a pneumatic shock absorber management device in order to solve the above problems.

[0011] Further, an object of the present invention is to provide a pneumatic shock absorber configured such that a position sensor of a pneumatic shock absorber management device minimizes the influence of the movement of the pneumatic shock absorber and can receive signals well so as to accurately grasp the position of the pneumatic shock absorber.

[0012] The present invention also provides a pneumatic shock absorber management system that can effectively manage a pneumatic shock absorber using a pneumatic shock absorber management device.

Means for Solving the Problems

[0013] The present invention includes a ring-shaped metal fitting housing that is attached to at least one end of a pneumatic shock absorber and forms a through portion that penetrates the inside and outside of the pneumatic shock absorber, a plate-shaped flange attached to the through portion so as to block the inside and outside of the pneumatic shock absorber, a wireless transmitter attached to the front surface of the flange that defines a surface formed in the outer direction of the pneumatic shock absorber, a cover attached to the front surface of the flange so as to protect the area where the wireless transmitter is attached, a shaft having a predetermined length and attached to the rear surface of the flange, a position sensor attached to the end portion in the inner direction of the shaft and generating position information of the pneumatic shock absorber, and a reflecting member connected to the shaft between the flange and the position sensor and rotatable about the shaft. By fixing the position of the reflecting member even when the pneumatic shock absorber rotates, the present invention provides a pneumatic shock absorber that greatly improves the accuracy of generating position information of the pneumatic shock absorber using the position sensor.

[0014] The present invention also includes a pneumatic shock absorber management system that includes a pneumatic shock absorber management unit and a communication unit, transmits management information including the generated position information or pressure information of the pneumatic shock absorber to the wireless transmitter, and the wireless transmitter converts the management information into one data set formed based on the generation time together with the unique number of the pneumatic shock absorber and transmits it to the pneumatic shock absorber management unit.

Effects of the Invention

[0015] According to an embodiment of the present invention, by using the arrangement and configuration of a shock absorber fitting installed on a pneumatic shock absorber and a shock absorber management device attached to the shock absorber fitting, convenience can be ensured for maintenance such as installation work and replacement work of the shock absorber management device.

[0016] Further, according to an embodiment of the present invention, by using a reflecting member that can independently control its posture regardless of the movement of the shock absorber, the position sensor can receive signals well without being affected by the movement of the shock absorber, thereby accurately generating the position information of the pneumatic shock absorber.

[0017] Also, according to an embodiment of the present invention, the pressure state and position information of the pneumatic shock absorber can be effectively managed using a pneumatic shock absorber management device.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Modes for Carrying Out the Invention

[0019] Hereinafter, embodiments of the present invention will be described in detail. However, the present invention is not limited to the embodiments disclosed below, and can be realized in various different forms. Merely, these embodiments are provided to complete the disclosure of the present invention and to more fully inform those with ordinary knowledge of the content of the present invention.

[0020] In this specification, when one element is said to be located "above" or "below" another element, this includes all meanings that this one element is located "directly above" or "directly below" the other element, or that additional elements can be interposed between these elements.

[0021] In this specification, the terms "upper part" or "lower part" are relative concepts set from the perspective of an observer. When the perspective of the observer changes, the "upper part" may mean the "lower part", or the "lower part" may mean the "upper part".

[0022] The term "external direction" referred to in this specification refers to the direction towards the outside of the shock absorber shown in FIG. 1, and the "internal direction" refers to the direction towards the inside of the shock absorber shown in FIG. 1.

[0023] Hereinafter, the pneumatic shock absorber and its management system will be described in detail with reference to the drawings.

[0024] FIG. 1 is a diagram showing a pneumatic shock absorber according to an embodiment of the present invention.

[0025] Referring to FIG. 1, the pneumatic shock absorber can include shock absorber fittings.

[0026] The pneumatic shock absorber 1 can be filled with compressed air inside in a tube shape made mainly of rubber and having through holes formed at both ends so that shock absorber fittings 2a and 2b can be attached. For example, the pneumatic shock absorber 1 can be formed in a cylindrical tube shape, but is not limited thereto.

[0027] The shock-absorbing fitting metal parts 2a and 2b attached to both ends of the pneumatic shock absorber 1 can form a fixing ring 11 in the outer direction of the shock absorber. Thereby, members such as ropes, bands, and chains can be attached to the fixing rings 11 of the shock-absorbing fitting metal parts 2a and 2b coupled to the pneumatic shock absorber 1, and the pneumatic shock absorber 1 can be horizontally installed on a ship or a quay wall, and the pneumatic shock absorber 1 floating in water can be fixed so as not to separate from the ship or the quay wall due to ocean currents. For example, a rope can be hung on the fixing rings 11 of the shock-absorbing fitting metal parts 2a and 2b attached to both ends of the pneumatic shock absorber 1, and the pneumatic shock absorber 1 can be arranged on the quay wall so that the ship and the quay wall do not contact each other by the pneumatic shock absorber 1.

[0028] The shock-absorbing fitting metal parts 2a and 2b can withstand the weight of the pneumatic shock absorber 1, are strong against impacts caused by external forces such as waves and winds, and can be made of a metal material resistant to corrosion. Thereby, it is easy to install various devices in the parts of the shock-absorbing fitting metal parts 2a and 2b. For example, a shock-absorbing fitting management device 100 for managing the pneumatic shock absorber 1 can be attached to one of the shock-absorbing fitting metal parts 2a at both ends of the pneumatic shock absorber 1. This will be described in detail with reference to FIG. 2.

[0029] FIG. 2 is a diagram showing a shock-absorbing fitting according to an embodiment of the present invention.

[0030] Referring to FIG. 2, the shock-absorbing fitting includes a fitting housing 20 coupled to the pneumatic shock absorber 1 and a fitting plug 10 fastened to the fitting housing 20, and the shock-absorbing fitting management device 100 can be attached to the fitting housing 20.

[0031] The fitting housing 20 may be in a ring shape including a through portion 24 having a predetermined diameter inside the fitting housing 20. Further, it may include a plug coupling portion 22 formed to protrude on the outer side, upper end (outside of the shock absorber) of the fitting housing 20, and a shock absorber fixing portion 23 formed to protrude on the outer side, lower end (inside of the shock absorber) of the fitting housing 20. At this time, the upper end of the plug coupling portion 22 and the lower end of the shock absorber fixing portion 23 define the thickness of the fitting housing 20.

[0032] The fitting housing 20 can be coupled to the pneumatic shock absorber 1 by the plug coupling portion 22 and the shock absorber fixing portion 23. For example, when the pneumatic shock absorber 1 is thicker than the thickness of the fitting housing 20, the plug coupling portion 22 and the shock absorber fixing portion 23 are inserted into the pneumatic shock absorber 1, and a part of the pneumatic shock absorber 1 can be inserted and fixed in a predetermined interval formed between the plug coupling portion 22 and the shock absorber fixing portion 23. At this time, the plug coupling portion 22, the shock absorber fixing portion 23, and the pneumatic shock absorber 1 may be fixed to each other by an adhesive, or a fixing screw (not shown) that can be fastened to the shock absorber fixing portion 23 may be used to fix the pneumatic shock absorber 1 in contact with the shock absorber fixing portion 23 and the shock absorber fixing portion 23 to fix the fitting housing 20 to the pneumatic shock absorber 1. However, the fixing method of the plug coupling portion 22, the shock absorber fixing portion 23, and the pneumatic shock absorber 1 is not limited thereto.

[0033] The fitting housing 20 protrudes in a predetermined length in the direction of the through portion 24 and may include a flange coupling portion 21 formed on the same surface as the shock absorber fixing portion 23 at the lower end of the fitting housing 20. The flange coupling portion 21 can be formed in a form corresponding to the flange 110 of the shock absorber management device 100 and the flange fixing bolt holes 111 formed in the flange 110 so as to be fastened to the shock absorber management device 100. Thereby, the shock absorber management device 100 can be mounted on the flange coupling portion 21 of the fitting housing 20. Also, by mounting the shock absorber management device 100 on the flange coupling portion 21 of the fitting housing 20, the inside of the shock absorber can be blocked from the outside of the shock absorber.

[0034] The plug connection part 22 of the fitting housing 20 can be formed in a form corresponding to the fitting plug 10 so that it can be connected outside the fitting plug 10 and the shock absorber. Thereby, the through part 24 of the fitting housing 20 to which the shock absorber management device 100 is attached can be sealed from the outside of the shock absorber using the fitting plug 10. Thereby, it is possible to prevent the shock absorber management device 100 from being exposed to the outside and damaged.

[0035] The fitting plug 10 can be formed so that the fitting plug 10 does not contact the shock absorber management device 100 when attached to the plug connection part 22. For example, when the cover 140 of the shock absorber management device 100 attached to the flange connection part 21 is located in the through part 24 and does not exceed the upper end of the plug connection part 22, the fitting plug 10 can be attached to the plug connection part 22 without interfering with the shock absorber management device 100 even if it has a flat form. Conversely, when the cover 140 of the shock absorber management device 100 attached to the flange connection part 21 is located in the through part 24 and exceeds the upper end of the plug connection part 22, if the fitting plug 10 has a flat form, the fitting plug 10 will interfere with the cover 140 of the shock absorber management device 100 when the fitting plug 10 is attached to the plug connection part 22. Thereby, it can have a curved surface bent to the outside of the shock absorber so as not to interfere with the cover 140 of the shock absorber management device 100 when the fitting plug 10 is attached to the plug connection part 22. That is, the fitting plug 10 can be fastened to the plug connection part 22 to seal the through part 24, but it can be manufactured in various forms so as not to interfere with the cover 140 of the shock absorber management device 100.

[0036] The fitting plug 10 coupled to the fitting housing 20 can form a fixing ring 11 outside the shock absorber so that members such as ropes, bands, and chains can be coupled to install the pneumatic shock absorber 1 on a ship or a quay wall.

[0037] The shock-absorbing material management device 100 mounted on the flange joint portion 21 of the fitting housing 20 can be provided with a wireless transmitter 130 in the outward direction of the shock-absorbing material with respect to the flange 110, and a cover 140 formed with a wireless transmitter housing portion 145 can be provided to protect the wireless transmitter 130. Thus, when the flange 110 is fastened to the flange joint portion 21 and the shock-absorbing material management device 100 is mounted on the fitting housing 20, it becomes easy for the wireless transmitter 130 to approach from the outside of the shock-absorbing material, and it is possible to prevent the wireless transmitter 130 from being directly exposed to the outside. Also, since the wireless transmitter 130 can be directly checked by removing the cover 140, it is possible to ensure the ease of maintenance of the wireless transmitter 130.

[0038] Also, the shock-absorbing material management device 100 can be provided with a position sensor 170 and an antenna 190 in the inward direction of the shock-absorbing material with respect to the flange 110. Thus, the transmission and reception of radio waves by the position sensor 170 and the antenna 190 can be arranged in the direction of the pneumatic shock-absorbing material 1 made of rubber, rather than in the direction of the fitting housing 20 made of metal and the fitting plug 10 fastened to the fitting housing 20. Thereby, without the radio waves being blocked by the fitting housing 20 made of metal and the fitting plug 10 fastened to the fitting housing 20, it is possible to transmit and receive in the direction of the pneumatic shock-absorbing material 1 made of rubber.

[0039] The shock-absorbing material management device 100 will be described in detail with reference to FIGS. 3 and 4 described later.

[0040] FIG. 3 is a view showing the front surface (the outward direction of the shock-absorbing material) of the shock-absorbing material management device according to an embodiment of the present invention.

[0041] Referring to FIG. 3, the shock-absorbing material management device 100 can include a flange 110, a wireless transmitter 130, and a cover 140.

[0042] The flange 110 can be formed in a plate shape so as to be attachable to the flange coupling part (Figs. 2, 21) of the fitting housing (Figs. 2, 20). For example, it can be formed in a circular plate shape, but it is not limited to this as long as it corresponds to the flange coupling part (Figs. 2, 21) of the fitting housing (Figs. 2, 20). Also, various materials such as metal, reinforced plastic, and fiber-reinforced plastic can be applied to the flange 110, but it is not limited to these.

[0043] On the front surface of the flange 110, fixing bolt holes 111 for attaching to the flange coupling part (Figs. 2, 21) with fixing bolts may be formed in the outer shell of the flange 110.

[0044] On the front surface of the flange 110, wireless transmitter fixing bolt holes 113 may be formed so that the wireless transmitter 130 can be attached to the central part of the flange 110.

[0045] On the front surface of the flange 110, a pressure sensor connection wire 104, a pressure sensor 105, an antenna connection wire 101, and a first position sensor connection wire 102 are attached, and a pressure sensor connection port 116 formed by penetrating through the rear surface of the flange 110, an antenna connection port 114 formed by penetrating through the rear surface of the flange 110, and a position sensor - wireless transmitter connection port 115 formed by penetrating through the rear surface of the flange 110 can be formed. Thereby, the pressure sensor 105 attached to the front surface of the flange 110 can measure the pressure formed on the rear surface of the flange 110, which may be advantageous for the replacement and maintenance of the pressure sensor 105 attached to the front surface of the flange 110. Also, the antenna connection wire 101 can be connected to an antenna (Figs. 4, 190) attached to the rear surface of the flange 110, and the first position sensor connection wire 102 can be connected to a second position sensor connection wire (Figs. 4, 103) attached to the rear surface of the flange 110.

[0046] On the front surface of the flange 110, cover fixing bolt holes 112 can be formed outside the wireless transmitter fixing bolt holes 113, the pressure sensor connection port 116, the antenna connection port 114, and the position sensor - wireless transmitter connection port 115 so that a cover 140 for covering and protecting the wireless transmitter 130, the pressure sensor connection line 104, the pressure sensor 105, the antenna connection line 101, and the first position sensor connection line 102 can be mounted. At this time, the cover fixing bolt holes 112 may be formed at positions corresponding to the cover bolt holes 142 formed in the cover wing portion 141.

[0047] The wireless transmitter 130 can have a wireless transmitter wing portion 131 with wireless transmitter bolt holes 132 formed on the outer shell of the wireless transmitter 130 so that the wireless transmitter 130 can be fixed to the flange 110 with a wireless transmitter fixing bolt 133 and a wireless transmitter fixing washer 134. Thereby, the wireless transmitter 130 can be easily attached to and detached from the flange 110 using the wireless transmitter fixing bolt 133.

[0048] The wireless transmitter 130 can include a wireless transmitter pressure sensor terminal 137 to which the pressure sensor connection line 104 can be connected, a wireless transmitter communication terminal 135 to which the antenna connection line 101 can be connected, and a wireless transmitter position sensor terminal 136 to which the first position sensor connection line 102 can be connected. Thereby, the wireless transmitter 130 can transmit the signal received via the wireless transmitter pressure sensor terminal 137 and the signal received via the wireless transmitter position sensor terminal 136 via the wireless transmitter communication terminal 135. Also, the wireless transmitter 130 includes a power supply device (not shown) inside, and can supply power to the pressure sensor 105 and the position sensor (FIG. 4, 170) via the wireless transmitter pressure sensor terminal 137 and the wireless transmitter position sensor terminal 136.

[0049] The pressure sensor connection line 104 may have a pressure sensor 105 attached to one end and a terminal formed at the other end that can be fastened to the wireless transmitter pressure sensor terminal 137. At this time, the pressure sensor 105 may be formed to be attachable to the pressure sensor connection port 116 of the flange 110. Thereby, the pressure sensor 105 attached to the pressure sensor connection port 116 formed to penetrate the rear surface of the flange 110 can be connected to the wireless transmitter 130 by the pressure sensor connection line 104, and the pressure sensor 105 can sense the pressure measurement value in the space on the rear surface of the flange 110 and transmit it to the wireless transmitter 130.

[0050] The antenna connection line 101 may have a terminal formed at one end that can be fastened to the antenna connection port 114 of the flange 110 and a terminal formed at the other end that can be fastened to the wireless transmitter communication terminal 135. Thereby, the antenna (FIG. 4, 190) attached to the rear surface of the flange 110 can be connected to the wireless transmitter 130 using the antenna connection line 101, and the signal generated by the wireless transmitter 130 can be transmitted via the antenna (FIG. 4, 190).

[0051] The first position sensor connection line 102 may have a terminal formed at one end that can be fastened to the position sensor - wireless transmitter connection port 115 of the flange 110 and a terminal formed at the other end that can be fastened to the wireless transmitter position sensor terminal 136. Thereby, the second position sensor connection line (FIG. 4, 103) connected to the position sensor (FIG. 4, 170) attached to the rear surface of the flange 110 can be connected to the wireless transmitter 130 using the first position sensor connection line 102, and the signal received by the position sensor (FIG. 4, 170) can be transmitted to the wireless transmitter 130.

[0052] In this way, by connecting the antenna connection line 101 and the first position sensor connection line 102 to the wireless transmitter 130, a position sensor (FIG. 4, 170) and an antenna (FIG. 4, 190) can be provided on the rear surface of the flange 110, and the wireless transmitter 130 can be provided on the front surface of the flange 110, ensuring convenience for the replacement and maintenance management of the wireless transmitter 130.

[0053] The cover 140 can protect the wireless transmitter 130, the pressure sensor connection line 104, the pressure sensor 105, the antenna connection line 101, and the first position sensor connection line 102, as well as the wireless transmitter fixing bolt holes 113, the pressure sensor connection ports 116, the antenna connection ports 114, and the position sensor - wireless transmitter connection ports 115 from being externally exposed, and can play a role in preventing moisture penetration and external impacts. For example, the cover 140 can form a wireless transmitter housing portion (Figure 2, 145) that can accommodate the wireless transmitter 130, the pressure sensor connection line 104, the pressure sensor 105, the antenna connection line 101, and the first position sensor connection line 102, as well as the wireless transmitter fixing bolt holes 113, the pressure sensor connection ports 116, the antenna connection ports 114, and the position sensor - wireless transmitter connection ports 115.

[0054] Also, a cover wing portion 141 with cover bolt holes 142 can be formed at the lower end of the cover 140 so that the cover 140 can be fixed to the flange 110 using the cover fixing bolt 143 and the cover fixing washer 144. Thereby, the cover fixing bolt 143 can be coupled to the cover fixing bolt hole 112 of the flange 110 to fix the cover 140 to the flange 110.

[0055] The gasket 120 may be disposed between the cover 140 and the flange 110 when the cover 140 is coupled to the flange 110. The gasket 120 may be manufactured in a shape corresponding to the size of the cover wing portions 141, and may have gasket bolt holes 121 formed at positions corresponding to the cover bolt holes 142. The gasket 120 may be made of various materials, such as, but not limited to, rubber, plastic, and metal. As a result, when the cover 140 is coupled to the flange 110, the gasket 120 is tightly attached between the cover wing portions 141 and the flange 110. The cover 140 protects the wireless transmitter 130, the pressure sensor connection line 104, the pressure sensor 105, the antenna connection line 101, the first position sensor connection line 102, the wireless transmitter fixing bolt hole 113, the pressure sensor connection port 116, the antenna connection port 114, and the position sensor-wireless transmitter connection port 115 from exposure to the outside and prevents moisture penetration.

[0056] The gasket 120 may further have one or more gasket holes (not shown) formed therein. Thus, when the cover 140 is coupled to the flange 110, air can move between the inside of the cover 140, which is formed by the wireless transmitter receiving portion (145, FIG. 2), and the outside of the cover 140, via the gasket holes (not shown) of the gasket 120 disposed between the cover 140 and the flange 110.

[0057] For example, a moisture-proof member may be attached to the gasket through-holes (not shown) to allow air to pass through but prevent moisture from seeping in. For example, the moisture-proof member may be, but is not limited to, a water-repellent coated fabric, Goretex, a water-repellent nonwoven fabric, or a water-repellent functional film that allows air to pass through but prevents moisture from passing through.

[0058] As a result, when the gasket through-hole (not shown) is formed between the cover 140 and the flange 110, the air pressure can be kept the same by the movement of air between the inside and the outside of the cover 140 when the cover 140 and the flange 110 are joined. Thus, when the inside of the cover 140 is sealed and the pressure rises, malfunction of the pressure measured by the pressure sensor 105 inside the cover 140 can be prevented by the gasket through-hole (not shown).

[0059] Also, the gasket 120 may be divided into a plurality of parts. For example, the gasket 120 can be divided into gaskets 120a, 120b, 120c, and 120d as four cut ends, but is not limited thereto.

[0060] The plurality of gaskets 120a, 120b, 120c, and 120d are arranged in the same plane, and gaps 122a, 122b, 122c, and 122d can be formed between the respective gaskets 120a, 120b, 120c, and 120d. For example, a gap 122a can be formed between one end of the gasket 120a and one end of the gasket 120b. As a result, when the cover 140 is joined to the flange 110, air can move between the inside and the outside of the cover 140 formed by the wireless transmitter housing portion (Figs. 2, 145) of the cover 140 through the gaps 122a, 122b, 122c, and 122d between the plurality of gaskets 120a, 120b, 120c, and 120d arranged between the cover 140 and the flange 110.

[0061] For example, air can move through the gaps 122a, 122b, 122c, and 122d, and a moisture prevention member may be attached so that moisture does not penetrate. For example, the moisture prevention member can be applied with a water-repellent coated fabric, Goretex, a non-woven fabric having water-repellent performance, a functional film having water-repellent performance, etc. that can allow air to pass through and prevent the passage of moisture, but is not limited thereto.

[0062] As a result, gaps 122a, 122b, 122c, and 122d are formed between the cover 140 and the flange 110. When the cover 140 and the flange 110 are joined, the air pressure can be kept the same due to the movement of air between the inside and the outside of the cover 140. Thus, when the inside of the cover 140 is sealed and the pressure rises, malfunction of the pressure measured by the pressure sensor 105 inside the cover 140 can be prevented by using the gaps 122a, 122b, 122c, and 122d.

[0063] Also, in another embodiment, the cover 140 can further form a cover through-hole (not shown). Thereby, when the cover 140 is coupled to the flange 110, air can move between the inside and the outside of the cover 140 formed by the wireless transmitter accommodating portion (FIGS. 2, 145) of the cover 140 through the cover through-hole (not shown).

[0064] For example, air can move through the cover through-hole (not shown), and a moisture prevention member can be attached so that moisture does not penetrate. For example, the moisture prevention member can be a water-repellent coated fabric, a non-woven fabric having water-repellent performance, a functional film having water-repellent performance, Gore-Tex, etc., that can allow air to pass through but prevent the passage of moisture, but is not limited thereto.

[0065] When the cover 140 and the flange 110 are joined, the cover through-hole (not shown) can maintain the same air pressure by the movement of air between the inside and the outside of the cover 140.

[0066] Thereby, the cover 140 can protect the wireless transmitter 130, the pressure sensor connection line 104, the pressure sensor 105, the antenna connection line 101, and the first position sensor connection line 102, and the wireless transmitter fixing bolt hole 113, the pressure sensor connection port 116, the antenna connection port 114, and the position sensor - wireless transmitter connection port 115 from being exposed to the outside and moisture.

[0067] In this way, even if the main components such as the wireless transmitter 130, the pressure sensor connection line 104, the pressure sensor 105, the antenna connection line 101, and the first position sensor connection line 102 are arranged on the front surface of the flange 110, they can be protected from the outside, and by removing the cover 140, the main components such as the wireless transmitter 130, the pressure sensor connection line 104, the pressure sensor 105, the antenna connection line 101, and the first position sensor connection line 102 can be easily replaced and maintained.

[0068] FIG. 4 is a view showing the rear surface (the inner direction of the bumper) of the bumper management device according to each embodiment of the present invention.

[0069] Referring to FIGS. 4(a) and 4(b), the bumper management devices 100a, 100b can include antennas 190a, 190b, position sensors 170a, 170b, and reflection members 180a, 180b.

[0070] The pressure sensor connection ports 116a, 116b penetrate through the front surfaces of the flanges 110a, 110b, and the pressure sensors (FIG. 3, 105) mounted on the front surfaces of the flanges 110a, 110b can measure the pressure in the space behind the flanges 110a, 110b.

[0071] The antenna connection ports 114a, 114b penetrate through the front surfaces of the flanges 110a, 110b, and can connect the antenna connection lines (FIG. 3, 101) mounted on the front surfaces of the flanges 110a, 110b to the antennas 190a, 190b. Thereby, the signal generated by the wireless transmitter (FIG. 3, 130) can be transmitted to the space behind the flanges 110a, 110b via the antenna 190.

[0072] The position sensor - wireless transmitter connection ports 115a and 115b penetrate through the front surfaces of the flanges 110a and 110b, and can connect the first position sensor connection wires (FIG. 3, 102) and the second position sensor connection wires 103a and 103b mounted on the front surfaces of the flanges 110a and 110b. At this time, one end of each of the second position sensor connection wires 103a and 103b is formed so as to be fastenable to the position sensor - wireless transmitter connection ports 115a and 115b, and the other end is formed so as to be connectable to the position sensors 170a and 170b. Thereby, the signals or position information received by the position sensors 170a and 170b can be transmitted to the wireless transmitter (FIG. 3, 130) via the second position sensor connection wires 103a and 103b and the first position sensor connection wire (FIG. 3, 102).

[0073] Referring to FIG. 4(a), the coupling of the shaft 160a, the position sensor 170a, and the reflecting member 180a will be described in detail.

[0074] The bracket 150 can be formed in the form of a rectangular frame. At this time, a flange coupling surface 150-1 fixed to the flange 110a may be formed on one of the opposite side surfaces, and a shaft coupling surface 150-2 to which the shaft 160a is fixed may be formed on the other side surface. For example, a bracket fixing bolt 151 may be mounted on the flange coupling surface 150-1. Thereby, the bracket fixing bolt 151 can be fastened to the bracket fixing bolt hole 117 formed in the flange 110a to fix the flange coupling surface 150-1 to the flange 110a. Also, a shaft fastening port 152 may be formed on the shaft coupling surface 150-2. For example, the shaft 160a may penetrate through the shaft fastening port 152 and be fixed by a shaft fixing bolt 162 so that the shaft 160a does not come out of the shaft fastening port 152. Thereby, the shaft 160a can be firmly fixed to the bracket 150.

[0075] The shaft 160a can be formed in a pipe shape with a shaft central through hole 164 passing through the shaft 160a. At this time, one end of the shaft 160a is formed so as to penetrate the bracket 150 and be fixed by a shaft fixing bolt 162, and the other end of the shaft 160a forms a plate-shaped position sensor fixing plate 161a that extends flat outward with reference to the shaft central through hole 164 so that the position sensor 170a can be attached. For example, one end of the shaft 160a can penetrate the shaft fastening port 152 and be fixed to the bracket 150 by a shaft fixing bolt 162. At this time, the other end of the shaft 160a where the position sensor fixing plate 161a is formed can be located outside the bracket 150. Thereby, the shaft 160a is fixed to the flange 110a by the bracket 150, and the position sensor 170a attached to the position sensor fixing plate 161a can be stably fixed outside the bracket 150.

[0076] A second position sensor connection line 103 can pass through the shaft central through hole 164 and be connected to the position sensor 170a attached to the position sensor fixing plate 161a. Thereby, the signal or position information received by the position sensor 170a can be transmitted using the second position sensor connection line 103.

[0077] The reflecting member 180a has a central plate through-hole 183 formed at the upper end with reference to the plate-shaped central plate 181, and a weight 184 is attached to the lower end. At this time, the central plate through-hole 183 can be formed to have a size through which the shaft 160a can pass. For example, the shaft 160a passes through the central plate through-hole 183 and is positioned, and the reflecting member 180a can rotate about the shaft 160a. At this time, the central plate through-hole 183 may be processed so that the reflecting member 180a can rotate well about the shaft 160a, or a rotating member may be further formed. For example, a bearing (not shown) having a through-hole of a size through which the shaft 160a can pass is formed inside the central plate through-hole 183, and a rotating member can be formed so that the reflecting member 180a can rotate well about the shaft 160a, but it is not limited thereto. Thereby, when the shaft 160a is passed through the central plate through-hole 183 of the reflecting member 180a and coupled to the shaft fastening port 152 of the bracket 150, the central plate 181 of the reflecting member 180a is positioned between the shaft coupling surface 150-2 of the bracket 150 and the position sensor fixing plate 161a, and the reflecting member 180a can rotate with reference to the shaft 160a.

[0078] A reflecting plate 182 can be attached between the central plate through-hole 183 and the weight 184 of the reflecting member 180a. At this time, the area of the reflecting plate 182 can be formed larger than the area of the position sensor 170a.

[0079] When the reflecting member 180a is coupled to the shaft 160a, the inner surface of the reflector 182 may be mounted in the direction of the position sensor 170a mounted on the shaft 160a. For example, the reflector 182 may be mounted at a predetermined angle with respect to the central plate 181 so as to extend in the direction of the central plate through-hole 183. Thereby, a wedge-shaped space is formed between the reflector 182 and the central plate 181, and the inner surface of the reflector 182 faces the position sensor 170a. Thereby, radio waves and electromagnetic signals from the air can be reflected by the inner surface of the reflector 182 and transmitted in the direction of the position sensor 170a. Further, the reflecting member 180a can rotate freely about the shaft 160a even when the shaft 160a rotates, the reflector 182 can overlook the air, and the radio waves and electromagnetic signals can be reflected by the inner surface of the reflector 182 and transmitted in the direction of the position sensor 170a. This will be described in detail with reference to FIG. 5.

[0080] Referring to FIG. 4(b), another embodiment of the coupling of the shaft 160b, the position sensor 170a, and the reflecting member 180b will be described in detail.

[0081] The shaft 160b can be formed in a pipe shape with a shaft central through-hole penetrating the shaft 160b. At this time, one end of the shaft 160b may be fastened and fixed to a shaft fixing hole 118 formed in the central portion of the flange 110b. Further, on the other end of the shaft 160b, a plate-shaped position sensor fixing plate 161b that is flatly extended outward with reference to the shaft central through-hole may be formed so that the position sensor 170a can be attached.

[0082] Before fastening the shaft 160b to the shaft fixing hole 118, the shaft 160b can pass through a central plate through-hole formed in the central plate of the reflecting member 180b and be coupled. At this time, the structure of the reflecting member 180b may be the same as the structure of the reflecting member 180a described in FIG. 4(a). Thereby, the reflecting member 180b can rotate about the shaft 160b with the shaft 160b fixed to the flange 110b.

[0083] Further, after the reflection member 180b is coupled to the shaft 160b, the fixing member 163 can be attached so that the shaft 160b can be positioned near the position sensor fixing plate 161b without moving along the shaft 160b. For example, when the shaft 160b passes through the central plate through hole of the reflection member 180b and is coupled, and the reflection member 180b is positioned near the position sensor fixing plate 161b, when the fixing member 163 is attached to the shaft 160b, the reflection member 180b is positioned between the position sensor fixing plate 161b and the fixing member 163. At this time, the fixing member 163 can prevent the reflection member 180b from moving along the shaft 160b and can have various forms such as a plate shape and a pin shape that can be coupled to the shaft 160b, but is not limited thereto.

[0084] Thereby, the reflection member 180b can be rotated about the shaft 160b fastened to the flange 110b and can be fixed so as to be rotatable only in the space between the position sensor fixing plate 161b and the fixing member 163.

[0085] The shaft 160b can form a connection line through hole 165 on the side surface of the shaft 160b in order to connect the second position sensor connection line 103b to the position sensor 170b through the shaft central through hole penetrating the shaft 160b. Thereby, the second position sensor connection line 103b can flow into the shaft central through hole through the connection line through hole 165 and can be connected to the position sensor 170b mounted on the position sensor fixing plate 161b through the shaft central through hole.

[0086] FIGS. 5 and 6 are diagrams showing a shock absorber management device according to each embodiment of the present invention.

[0087] Referring to FIG. 5, the reflection member 180 can maintain a fixed position without being affected by the rotation of the flange 110.

[0088] The shock absorber management device 100 is coupled to the shock absorber fitting of the pneumatic shock absorber by a flange 110. Thus, when the pneumatic shock absorber rotates, the shock absorber management device 100 also rotates accordingly. For example, as shown in FIGS. 5(a) to 5(b), while the flange 110 rotates, the portion coupled to the flange 110 also rotates.

[0089] When all parts of the shock absorber management device 100 rotate together in response to the rotation of the pneumatic shock absorber, the position sensor 170 fixed to the shock absorber management device 100 will also rotate. At this time, regardless of the rotation of the shock absorber management device 100, the position sensor 170 can be mounted at the center of the shock absorber management device 100 so that the position sensor 170 can be viewed in one direction. However, when the position sensor 170 is mounted at the center of the shock absorber management device 100, the position sensor 170 cannot effectively receive electromagnetic signals from above. Thus, in the present invention, although it is fastened to the shaft 160, a reflecting member 180 that can freely rotate about the shaft 160 is used so that the reflecting plate 182 always faces upward without being affected by the rotation of the flange 110, and using the reflection angle, the electromagnetic signal from above can be effectively transmitted to the position sensor 170.

[0090] The rotatability of the reflecting member 180 including the reflecting plate 182 with respect to the shaft 160 has been described with reference to FIG. 4. At this time, the weight 184 mounted on the lower end of the center plate 181 of the reflecting member 180 is directed downward by gravity, and the inner surface of the reflecting plate 182 can face upward. Thereby, the reflecting member 180 comes to face the same direction due to the gravity acting on the weight 184 even when the flange 110 rotates, the reflecting plate 182 mounted on the reflecting member 180 can face upward, and the reflecting plate 182 can effectively reflect the electromagnetic signal.

[0091] Referring to FIG. 6, the reflecting member 180 can maintain a fixed position without being affected by the inclination of the flange 110.

[0092] The shock absorber management device 100 is coupled to the shock absorber fitting of the pneumatic shock absorber by the flange 110. As a result, when the pneumatic shock absorber tilts, the shock absorber management device 100 will tilt as well. For example, when the flange 110 tilts as shown in FIGS. 6(a) to 6(b) or FIGS. 6(c), the portion coupled to the flange 110 will also tilt.

[0093] When all parts of the shock absorber management device 100 tilt similarly according to the tilt of the pneumatic shock absorber, the position sensor 170 fixed to the shock absorber management device 100 cannot effectively receive the electromagnetic signal from above. Accordingly, a hinge 185 was added to the center plate 181 of the reflecting member 180 to improve the reflecting plate 182 to constantly face upward without being affected by the tilt of the flange 110.

[0094] The center plate 181 of the reflecting member 180 including the reflecting plate 182 can form a hinge 185 between the portion fastened to the shaft 160 and the portion where the reflecting plate 182 is formed. As a result, the center plate 181 can be folded at a predetermined angle around the hinge 185. At this time, the weight 184 attached to the lower end of the center plate 181 is oriented downward by gravity, and the center plate 181 to which the reflecting plate 182, which is the lower part of the hinge 185, is attached is oriented downward constantly by gravity. Accordingly, the reflecting plate 182 can similarly face upward by the gravity acting on the weight 184 even when the flange 110 tilts, and can effectively reflect the electromagnetic signal.

[0095] FIG. 7 is a schematic diagram showing a pneumatic shock absorber management system according to an embodiment of the present invention.

[0096] Referring to FIG. 7, the pneumatic shock absorber management system includes a pneumatic shock absorber, a pneumatic shock absorber management unit, and a communication unit.

[0097] The pneumatic shock absorber can be provided in plural numbers on the wall surface of the quay or on the ship side to prevent damage to the hull and the quay when the ship approaches the shore or comes alongside. At this time, the range where the pneumatic shock absorber is installed can be made very wide according to the size of the hull or the quay. Further, the pneumatic shock absorber should be fixed at an appropriate position for preventing damage to the hull and the quay, and an appropriate pressure must be maintained so that it can function as a buffer. Therefore, the pneumatic shock absorber requires a system that can manage the pneumatic shock absorber.

[0098] The pneumatic shock absorber of the pneumatic shock absorber management system can generate management information. At this time, the management information may be various information such as position information, pressure information, and temperature information, but is not limited thereto. For example, the management information can be position information generated using a position sensor. It may also be pressure information generated using a pressure sensor. At this time, the position sensor can apply a GPS sensor, but is not limited thereto. Further, the pressure sensor can include, but is not limited to, a strain gauge pressure sensor, a capacitance type pressure sensor, a potentiometer type pressure sensor, a piezoelectric pressure sensor, etc. Thereby, it is possible to confirm whether the pneumatic shock absorber is at an appropriate position or forming an appropriate pressure using the management information. <

[0099] The pneumatic shock absorber can include a wireless transmitter that transmits the generated management information, for example, the position information generated by the position sensor and / or the pressure information generated by the pressure sensor. Thereby, the wireless transmitter can receive the input of the management information including the position information and / or the pressure information.

[0100] The wireless transmitter can convert the management information into one data set formed based on the generation time. Further, the wireless transmitter can generate a data set by including the unique number of the pneumatic shock absorber in the data set. Thereby, it is possible to specify which pneumatic shock absorber the data set belongs to.

[0101] For example, when the position sensor generates position information A(x1, y1) and the pressure sensor generates pressure information B(P1) at a specific time point T1, the position information A(x1, y1) and the pressure information B(P1) at the same time point including metadata for the specific time T1 are transmitted to the wireless transmitter, and the wireless transmitter can generate them as a data set by combining the position information A(x1, y1) and the pressure information B(P1) based on the time T1. At this time, the unique number F(1) of the pneumatic shock absorber can be included in the data set. Thereby, the wireless transmitter can continuously generate data sets based on the time reference, for example, as follows. T1: A(x1, y1), B(P1), F(1) T2: A(x2, y2), B(P2), F(1) T3: A(x3, y3), B(P3), F(1)

[0102] The wireless transmitter can transmit the data set in a wireless communication format. For example, it can be transmitted in a wireless communication format using an antenna connected to the wireless transmitter.

[0103] The pneumatic shock absorber management system may include a pneumatic shock absorber management unit for managing the pneumatic shock absorber, and may include a communication unit for connecting the pneumatic shock absorber and the pneumatic shock absorber management unit. At this time, the communication unit may apply wireless communication technology. For example, the communication unit may apply low-power long-distance communication technology, and may apply wireless communication technologies using LoRa, LoRaWAN, RF, etc., but is not limited thereto. Thereby, the pneumatic shock absorber management unit can receive the dataset transmitted from the wireless transmitter via the communication unit. Thereby, the status confirmation and management of the shock absorber can be performed via the pneumatic shock absorber management unit.

[0104] The pneumatic shock absorber management unit can receive the dataset via the communication unit and directly utilize the management information of the dataset in the pneumatic shock absorber management unit. However, since the errors and deviations of the management information are directly reflected, when a large amount of noise occurs temporarily, it may interfere with the management of the pneumatic shock absorber. Therefore, it is preferable to correct the management information of the dataset, such as position information and pressure information, to reduce errors and deviations, stabilize data dispersion, and correct values with large abnormal errors. At this time, the correction method can apply at least one of the simple moving average, exponential moving average, weighted moving average, geometric moving average, and harmonic moving average methods.

[0105] Specifically, the continuous average value of the measured values, which is a type of exponential moving average, can be applied. For example, for the first value (x1, y1), the second value (x2, y2), the third value (x3, y3), and the nth value (x n , y n )(where n is a natural number of 1 or more, and the larger the value of n, the more recent the measured value), the position information (D 1x , D 1y ) of the first dataset corrected by the pneumatic shock absorber management unit is as follows. JPEG0007715869000001.jpg14170

[0106] Thereafter, the position information (D 2x , D 2y ) of the second data set corrected by the pneumatic shock absorber management unit is as follows. JPEG0007715869000002.jpg20170

[0107] Solving this gives the following. JPEG0007715869000003.jpg13170

[0108] Rewriting this gives the following. JPEG0007715869000004.jpg15170

[0109] Thereafter, the position information (D nx , D ny ) of the nth data set corrected by the pneumatic shock absorber management unit is as follows. JPEG0007715869000005.jpg14170

[0110] Solving this gives the following. JPEG0007715869000006.jpg26170

[0111] Here, since the value of the denominator increases geometrically except for the last term, it may be assumed that there is little effect on the values of D nx and D ny . JPEG0007715869000007.jpg15170 Representing this by weights, the weights of the position information decrease in the order of approximately 50%, 25%, 13%, 6%, 3% from the latest measurement value.

[0112] As a result, a high weight is given to the position information close to the current position information, and it becomes possible to confirm that the position of the pneumatic shock absorber approaches the current time. When an excessive error and deviation occur due to a partial reflection of the trend of the past position information, this can be corrected. This is also applicable to other management information such as pressure information.

[0113] This can be expressed as the following general formula for the management information (x). (n is a natural number of 1 or more, and the larger the value of n, the more recent the measurement value) JPEG0007715869000008.jpg18170

[0114] Also, a specific number of data, which is a type of simple moving average, can be selected to obtain an average, and the corresponding value can be applied as position data. For example, for the first position information (x1, y1), the second position information (x2, y2), the third position information (x3, y3), and the nth position information (x n , y n )(where n is a natural number of 1 or more, and the larger the value of n, the more recent the measurement value), when four values are sequentially selected to apply the arithmetic mean value, the first data set (D 1x , D 1y ) corrected by the pneumatic shock absorber management unit is as follows. JPEG0007715869000009.jpg13170

[0115] Thereafter, the second data set (D 2x , D 2y ) corrected by the pneumatic shock absorber management unit is as follows. JPEG0007715869000010.jpg13170

[0116] Thereafter, the nth data set (D nx , D ny ) corrected by the pneumatic shock absorber management unit is as follows. JPEG0007715869000011.jpg13170

[0117] Thus, by utilizing the position information near the most recent position information, it is possible to stabilize the dispersion and correct the values with abnormal errors. This is applicable to other management information such as pressure information.

[0118] However, when using such a method, if the dataset is composed of less than three, the number of parameters decreases, and there is a drawback that the effect of correcting an abnormally large error value becomes weak. For example, when using two pieces of position information, since the specific gravity is 50% each, when one piece of position information has an abnormal value, it is overly reflected in the dataset.

[0119] When the dataset is composed of more than five, there may be a drawback that it overly reflects past position information and cannot immediately reflect changes to current position information. For example, when using six pieces of position information, since the specific gravity is 16.7% each, the specific gravity of the latest position information becomes overly low, making it difficult to reflect the latest trend.

[0120] In this way, when correcting the dataset, the pneumatic shock absorber management unit can apply various correction methods to reduce the error and deviation of the management information, stabilize the dispersion, and correct values with abnormally large errors.

[0121] As described above, the specific description of the present invention has been made by the embodiments with reference to the accompanying drawings. However, the above-described embodiments are merely examples of the present invention, and it should not be understood that the present invention is limited to the above embodiments. The scope of the rights of the present invention should be understood by the scope of the following claims and their equivalent concepts.

[0122] For example, the drawings schematically show each component mainly for easy understanding, and the thickness, length, number, etc. of each illustrated component may be different from the actual situation during the progress of drawing creation. In addition, the materials, shapes, dimensions, etc. of each component shown in the above embodiments are examples and are not particularly limited, and various changes can be made without substantially departing from the effects of the present invention.

Explanation of Reference Numerals

[0123] 1 Pneumatic shock absorber; 2a, 2b Shock absorber fittings; 10 Fitting bolt; 11 Fixed ring; 20 Fitting housing; 21 Flange joint; 22 Bolt joint; 23 Shock absorber fixing part; 24 Through hole; 100 Shock absorber management device; 101 Antenna connection wire; 102 First position sensor connection wire; 103a, 103b Second position sensor connection wire; 104 Pressure sensor connection wire; 105 Pressure sensor; 110, 110a, 110b Flange; 111 Flange fixing bolt hole; 112 Cover fixing bolt hole; 113 Wireless transmitter fixing bolt hole; 114 Antenna connection port; 115 Position sensor - wireless transmitter connection port; 116 Pressure sensor connection port; 117 Bracket fixing bolt hole; 118 Shaft fixing hole; 120 Gasket; 121 Gasket bolt hole; 122 Gap; 130 Wireless transmitter; 131 Wireless transmitter wing part; 132 Wireless transmitter bolt hole; 133 Wireless transmitter fixing bolt; 134 Wireless transmitter fixing washer; 135 Wireless transmitter communication terminal; 136 Wireless transmitter position sensor terminal; 137 Wireless transmitter pressure sensor terminal; 140 Cover; 141 Cover wing part; 142 Cover bolt hole; 143 Cover fixing bolt; 144 Cover fixing washer; 145 Wireless transmitter housing part; 150 Bracket; 150-1 Flange joint surface; 150-2 Shaft joint surface; 151 Bracket fixing bolt; 152 Shaft fastening port; 160a, 160b Shaft; 161a, 161b Position sensor fixing plate; 162 Shaft fixing bolt; 163 Fixing member; 164 Central through hole of shaft; 165 Connection wire through hole; 170, 170a, 170b Position sensor; 180 Reflective member; 181 Central plate; 182 Reflective plate; 183 Central plate through hole; 184 Weight; 185 Hinge; 190 Antenna.

Claims

1. A ring-shaped metal housing that is attached to at least one end of a pneumatic shock absorber and forms a through-hole that penetrates the inside and outside of the pneumatic shock absorber, A plate-shaped flange attached to the through-hole so as to block the inside and outside of the pneumatic shock absorber, A wireless transmitter attached to the front surface of the flange that defines a surface formed in the outer direction of the pneumatic shock absorber, A cover attached to the front surface of the flange so as to protect the area where the wireless transmitter is attached, A shaft having a predetermined length and attached to the rear surface of the flange that defines a surface formed in the inner direction of the pneumatic shock absorber, A position sensor attached to the inner end of the shaft that generates position information of the pneumatic shock absorber, A reflective member that is connected to the shaft between the flange and the position sensor and is rotatable about the shaft, A pneumatic shock absorber that significantly improves the accuracy of generating position information of the pneumatic shock absorber using the position sensor by fixing the position of the reflective member even when the pneumatic shock absorber rotates.

2. Further including a pressure sensor attached to an area protected by the cover on the front surface of the flange, The flange is provided with a pressure measurement port formed through the flange so that the pressure sensor can measure the pressure in the space on the rear surface of the flange. The pressure measurement port is provided in an area protected by the cover, The pneumatic shock absorber according to claim 1, which can protect the pressure sensor from the inflow of moisture while facilitating the maintenance of the pressure sensor.

3. The flange is provided with a position sensor-wireless transmitter connection port formed through the flange so that a signal received by the position sensor can be transmitted to the wireless transmitter. The position sensor-wireless transmitter connection port is provided in an area protected by the cover, The pneumatic shock absorber according to claim 1, which can protect the position sensor from the inflow of moisture while preventing the electromagnetic signal transmitted to the position sensor from being interfered with by the cover.

4. An antenna is further provided, which is attached to the rear surface of the flange that defines a surface formed in the inner direction of the pneumatic shock absorber, The flange is provided with an antenna connection port formed through the flange so as to transmit the signal generated by the wireless transmitter to the antenna. The antenna connection port is provided in a region protected by the cover, and while preventing the electromagnetic signal transmitted to the antenna from being interfered with by the cover, the position sensor can be protected from the inflow of moisture. The pneumatic shock absorber according to claim 1.

5. The reflecting member a center plate having at least one or more plates, a weight provided below the center plate to apply gravity in one direction to the center plate, and a reflecting plate provided to be connected to the center plate to reflect an electromagnetic signal transmitted to the position sensor, a center plate through hole for the shaft to pass through is formed in the center plate, and the center plate rotates about the shaft, by the one-way gravitational action of the weight, so that the reflecting plate is positioned in a certain direction with respect to the flange even when the pneumatic shock absorber rotates, The accuracy of generating the position information of the pneumatic shock absorber using the position sensor is greatly improved even when the pneumatic shock absorber rotates. The pneumatic shock absorber according to claim 1.

6. In a system for managing the pneumatic shock absorber according to any one of claims 1 to 5, including a pneumatic shock absorber management unit and a communication unit, transmitting management information including the position information or pressure information of the generated pneumatic shock absorber to the wireless transmitter, The wireless transmitter converts the management information into one data set formed based on the generation time together with the unique number of the pneumatic shock absorber and transmits it to the pneumatic shock absorber management unit. A pneumatic shock absorber management system.

7. The pneumatic shock absorber management unit corrects the management information of the received data set by applying at least any one of the simple moving average, exponential moving average, weighted moving average, geometric moving average, and harmonic moving average methods. The pneumatic shock absorber management system according to claim 6.

Images