JP2019123359A - Crossing gate - Google Patents
Crossing gate Download PDFInfo
- Publication number
- JP2019123359A JP2019123359A JP2018004952A JP2018004952A JP2019123359A JP 2019123359 A JP2019123359 A JP 2019123359A JP 2018004952 A JP2018004952 A JP 2018004952A JP 2018004952 A JP2018004952 A JP 2018004952A JP 2019123359 A JP2019123359 A JP 2019123359A
- Authority
- JP
- Japan
- Prior art keywords
- breakage
- blocking
- conductive
- conductive paint
- conductive path
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Train Traffic Observation, Control, And Security (AREA)
Abstract
Description
本発明は、遮断竿の折損を検知することができる踏切遮断機に関するものである。 The present invention relates to a level crossing breaker capable of detecting breakage of a blocking weir.
従来、鉄道踏切には、鉄道車両が進来する際、車両や歩行者が踏切内に進入するのを防ぐための踏切遮断機が設けられている。踏切遮断機には、遮断位置に下降した遮断竿（遮断桿）が踏切道の内側から外側に押圧されたとき、遮断竿を外側へ屈折させ、折損を防ぐための折損防止器が設けられている。これにより、車両や歩行者が踏切内に進入した直後、鉄道車両が進来することで、遮断機の遮断竿が降下したとき、車両や歩行者は、遮断竿を折損することなく、踏切道から退避することができる。しかしながら、車両が遮断竿を押圧する状況によっては、遮断竿が折損することがあり、遮断竿が折損した場合、折損を速やかに検知し、鉄道係員に伝達することが望まれている。 Conventionally, a railroad crossing is provided with a crossing barrier for preventing vehicles and pedestrians from entering the railroad crossing when a railroad vehicle moves in and out. The crossing barrier is provided with a breakage prevention device for refracting the blocking wedge outward to prevent breakage when the blocking wedge (blocking wedge) lowered to the blocking position is pressed from the inside to the outside of the crossing road. There is. As a result, immediately after the vehicle or pedestrian enters the level crossing, when the blocking fence of the circuit breaker descends by the railway vehicle coming and going, the vehicle or pedestrian does not break the blocking fence, and the crossing road Can be evacuated from However, depending on the situation where the vehicle presses the blocking wedge, the blocking wedge may be broken, and if the blocking wedge is broken, it is desirable that the breakage be detected promptly and transmitted to the railway staff.
そこで、特許文献１には、遮断機の遮断竿の折損による遮断竿の昇降時の駆動電流（負荷）の変化を検出することにより、遮断竿の折損を検知する方法が開示されている。また、特許文献２には、遮断竿の内部に超音波を発信し、遮断竿の折損による反射波の変化に基づいて、遮断竿の折損を検知する方法が開示されている。 Therefore, Patent Document 1 discloses a method of detecting breakage of the shut bar by detecting a change in drive current (load) at the time of lifting and lowering of the shut bar due to breakage of the bar of the breaker. Further, Patent Document 2 discloses a method of transmitting ultrasonic waves to the inside of the blocking weir and detecting the breaking of the blocking weir based on the change in the reflected wave due to the breaking of the blocking weir.
しかしながら、特許文献１及び２に記載された遮断竿の折損を検知する方法では、遮断機は、屋外の踏切道に設置されているため、季節による温度差等の外乱による折損の検知精度の低下が避けられないという問題がある。 However, in the method of detecting breakage of the blocking weir described in Patent Literatures 1 and 2, since the breaker is installed outdoors on the level crossing road, the detection accuracy of breakage due to disturbance such as a temperature difference due to the season decreases. There is a problem that is inevitable.
本発明は、上記の点に鑑みてなされたものであり、温度差等の外乱の影響を受け難く、遮断竿の折損を確実に検知することが可能な踏切遮断機を提供することを目的とする。 The present invention has been made in view of the above-mentioned point, and it is an object of the present invention to provide a level crossing breaker which is not easily affected by disturbances such as temperature difference and can reliably detect breakage of a blocking fence. Do.
上記の課題を解決するために、請求項１に係る踏切遮断機は、遮断竿によって踏切道を開閉する踏切遮断機において、前記遮断竿に導電性塗料を塗布することによって形成された導電路と、前記導電路の電気的な導通の遮断又は電気抵抗の増大を検知する検知手段と、を備えたことを特徴とする。
請求項２に係る踏切遮断機は、前記遮断竿には、案内溝が形成され、前記導電性塗料は、前記案内溝内に塗布されていることを特徴とする。
請求項３に係る踏切遮断機は、前記導電性塗料は、導電性接着剤であることを特徴とする。
請求項４に係る踏切遮断機は、前記遮断竿に塗布された導電性塗料は、絶縁体で被覆されていることを特徴とする。
In order to solve the above problems, a level crossing breaker according to a first aspect of the present invention is a level crossing breaker that opens and closes a crossing road by a blocking bar, and a conductive path formed by applying a conductive paint to the blocking bar. And detection means for detecting the interruption of the electrical conduction of the conductive path or the increase of the electrical resistance.
In the crossing barrier according to claim 2, a guide groove is formed in the blocking rod, and the conductive paint is applied in the guide groove.
The level crossing breaker according to claim 3 is characterized in that the conductive paint is a conductive adhesive.
The level crossing breaker according to claim 4 is characterized in that the conductive paint applied to the blocking weir is coated with an insulator.
請求項１に係る発明によれば、遮断竿が折損したとき、導電路の電気的な導通の遮断又は電気抵抗の増大により、遮断竿の折損を確実に検知することができる。このとき、遮断竿が折損して完全に破断した場合には、導電性塗料の塗膜も確実に破断するので、そのような遮断竿の折損を確実に検知することができる。
請求項２に係る発明によれば、案内溝により、導電性塗料を容易に塗布することができ、また、均一な塗膜を得ることができる。
請求項３に係る発明によれば、導電性接着剤を用いることで、塗布が困難な材料からなる遮断竿に対して、安定した塗膜を得ることができる。
請求項４に係る発明によれば、遮断竿に塗布された導電性塗料を絶縁体で被覆することで、感電を防ぐことができる。
According to the first aspect of the invention, when the breaking bar is broken, breaking of the breaking bar can be reliably detected by breaking the electrical conduction of the conductive path or increasing the electric resistance. At this time, when the blocking wedge is broken and completely broken, the coating film of the conductive paint is also surely broken, so that breakage of such a blocking wedge can be reliably detected.
According to the invention of claim 2, the conductive paint can be easily applied by the guide groove, and a uniform coating can be obtained.
According to the invention which concerns on Claim 3, a stable coating film can be obtained with respect to the blocking weir which consists of a material with difficult application | coating by using a conductive adhesive.
According to the invention which concerns on Claim 4, an electric shock can be prevented by coat | covering the electroconductive coating material apply | coated to the interruption | blocking stick | rod with an insulator.
以下、本発明の一実施形態に係る遮断機の構成を図１〜図４に基づいて詳細に説明する。
本発明の踏切遮断機１は、鉄道の踏切道に設置されて、鉄道車両の進来時に、車両、歩行者等の踏切内への進入を防止するものである。踏切遮断機１は、図１及び図２に示すように、遮断竿３と、駆動部５と、折損防止器７と、折損検知回路９と、ウエイト１１とを備えている。
Hereinafter, the structure of the circuit breaker which concerns on one Embodiment of this invention is demonstrated in detail based on FIGS. 1-4.
The crossing barrier 1 of the present invention is installed on a railroad crossing road to prevent entry of a vehicle, a pedestrian or the like into a crossing at the time of arrival of a railway vehicle. As shown in FIG. 1 and FIG. 2, the level crossing breaker 1 includes a blocking rod 3, a drive unit 5, a breakage prevention device 7, a breakage detection circuit 9, and a weight 11.
遮断竿３は、所定の長さを有する棒状部材であり、竹材、繊維強化プラスチック等の公知材料で製造することができる。この遮断竿３は、図示の例では、有底中空の丸棒部材２３となっている。遮断竿３は、基端部（一端部）が折損防止器７を介して、駆動部５に取付けられている。また、遮断竿３の外表面には、その略全長にわたって軸方向に延びる案内溝２５が形成されている。案内溝２５は、遮断竿３の径方向の両側（図３では、上部及び下部）に配置されて、軸方向に延びる一対の溝２５ａ，２５ｂと、遮断竿３の先端部（他端部）に形成され、その直径方向に延びて、一対の溝２５ａ，２５ｂを互いに連通する連通溝２５ｃとからなる。 The blocking rod 3 is a rod-like member having a predetermined length, and can be made of a known material such as a bamboo material or a fiber reinforced plastic. The blocking rod 3 is a bottomed hollow round bar member 23 in the illustrated example. The shutoff rod 3 is attached at its proximal end (one end) to the drive unit 5 via the breakage prevention device 7. Further, a guide groove 25 extending in the axial direction is formed on the outer surface of the blocking wedge 3 over substantially the entire length thereof. The guide groove 25 is disposed on both sides (upper and lower portions in FIG. 3) of the blocking rod 3 in the radial direction, and a pair of axially extending grooves 25a and 25b, and the tip (other end) of the blocking rod 3 And a communication groove 25c extending in the diameter direction and communicating the pair of grooves 25a and 25b with each other.
案内溝２５内には、その全長にわたって導電性塗料２７が塗布されており、その塗膜によって案内溝２５の一方の溝２５ａの基端部から連通溝２５ｃを介して他方の溝２５ｂの基端部にわたって１つの導電路２８が形成されている。導電性塗料２７の塗膜は、例えば幅５ｍｍ以下、厚さ２ｍｍ以下、体積固有抵抗率１０−４Ω・ｃｍ以下とし、案内溝２５は、導電性塗料２７の塗膜に合わせた寸法とする。 The conductive paint 27 is applied to the entire length of the guide groove 25 so that the base end of one of the grooves 25a of the guide groove 25 from the base end of the other groove 25b via the communication groove 25c. One conductive path 28 is formed across the portion. The coating of the conductive paint 27 has, for example, a width of 5 mm or less, a thickness of 2 mm or less, a volume resistivity of 10 −4 Ω · cm or less, and the guide groove 25 has a size in accordance with the coating of the conductive paint 27 .
導電性塗料２７は、例えば塗料樹脂にカーボンブラック、あるいは、銀、銅、ニッケル等の金属粉末導電性の顔料を混合した公知の導電性塗料を用いることができ、付着性、導電性、安定性、塗布性、色合い等の特性を考慮して適宜選択することができる。また、遮断竿３がゴム等の柔軟性の素材のような塗膜が形成されにくいものの場合、導電性塗料２７として導電性接着剤を用いるとよい。 The conductive paint 27 may be, for example, a known conductive paint in which carbon black or metal powder conductive pigment such as silver, copper, nickel, etc. is mixed with paint resin, and adhesion, conductivity, stability It can be selected appropriately in consideration of properties such as coatability and color tone. Further, in the case where it is difficult to form a coating film such as a flexible material such as rubber, it is preferable to use a conductive adhesive as the conductive paint 27.
導電性塗料２７が塗装された遮断竿３の外表面は、ＪＩＳ（日本工業規格）で定められた黄色と黒色との組合せによる縞模様の警戒色で塗装され（図１及び図２参照）、この塗膜により被覆されて、導電性塗料２７から絶縁されている。あるいは、遮断竿３の外表面を警戒色の熱収縮性のプラスチックチューブやフィルム材で被覆して導電性塗料２７から絶縁してもよい。 The outer surface of the shielding gutter 3 coated with the conductive paint 27 is painted in a warning color of a stripe pattern of a combination of yellow and black defined in JIS (Japanese Industrial Standard) (see FIGS. 1 and 2). It is coated with a coating and insulated from the conductive paint 27. Alternatively, the outer surface of the barrier gutter 3 may be covered with a heat-shrinkable plastic tube or film material of the guard color and insulated from the conductive paint 27.
駆動部５は、遮断竿３の基端部が折損防止器７を介して取付けられ、モータ及び減速機構によって遮断竿３を回動させ、遮断竿３の昇降によって踏切道の開閉を行うものである。折損防止器７は、水平位置（遮断位置）に下降した遮断竿３が踏切道の内側から外側へ押圧されたとき、屈折を許容して、車両や歩行者が踏切道内に閉じ込められるのを防止するためものである。折損防止器７を介して駆動部５に取付けられた遮断竿３の背部には、ウエイト１１が取付けられている。このウエイト１１は、遮断竿３の水平バランスをとって駆動部５の負荷を軽減しつつ、停電時等、駆動部５の動力が失われたときは、遮断竿３を水平位置で保持するためものである。 The drive unit 5 has a base end portion of the shutoff rod 3 attached via the breakage prevention device 7, rotates the shutoff rod 3 by the motor and the reduction mechanism, and opens and closes the crossing road by raising and lowering the shutoff rod 3. is there. The breakage prevention device 7 allows refraction when the shutoff rod 3 lowered to the horizontal position (cutoff position) is pressed from the inside to the outside of the crossing road, and prevents vehicles and pedestrians from being trapped in the crossing road. In order to A weight 11 is attached to the back of the blocking rod 3 attached to the drive unit 5 via the breakage prevention device 7. The weight 11 balances the shutoff lever 3 horizontally to reduce the load on the drive unit 5 and holds the shutoff lever 3 in the horizontal position when power of the drive unit 5 is lost, such as at the time of a power failure. It is a thing.
次に折損検知回路９について、主に図４を参照して説明する。
図４に示すように、折損検知回路９（検知手段）は、センサ部３５及び検知部３７を備えている。センサ部３５は、導電性塗料２７の導電路２８を抵抗Ｒｘとして含むホイートストンブリッジ回路（以下、ブリッジ回路という）を備えている。このブリッジ回路は、互いに直列に接続された導電路２８の抵抗Ｒｘ及び固定抵抗Ｒ２と、互いに直列に接続された可変抵抗Ｒ４及び固定抵抗Ｒ３とを並列に電源５０に接続したものである。導電性塗料２７の導電路２８は、遮断竿３の一対の溝２５ａ，２５ｂの基端部の導電性塗料２７の塗膜にリード線２９を接続することにより、抵抗Ｒｘとしてブリッジ回路に接続されている。リード線２９は、導電性接着剤、あるいは、ネジ止め等の公知の接続手段３０によって導電性塗料２７の塗膜に接続することができる（図２参照）。ブリッジ回路の陰極側は、接地Ｅが施されている。ブリッジ回路の抵抗Ｒｘ、固定抵抗Ｒ２間の接点４７、及び、固定抵抗Ｒ３、可変抵抗Ｒ４間の接点４９は、検知部３７のオペアンプ５１（後述）の入力端子５７に接続されている。
Next, the breakage detection circuit 9 will be described mainly with reference to FIG.
As shown in FIG. 4, the breakage detection circuit 9 (detection means) includes a sensor unit 35 and a detection unit 37. The sensor unit 35 includes a Wheatstone bridge circuit (hereinafter referred to as a bridge circuit) including the conductive path 28 of the conductive paint 27 as a resistor Rx. In this bridge circuit, the resistance Rx and the fixed resistor R2 of the conductive path 28 connected in series with each other, and the variable resistor R4 and the fixed resistor R3 connected in series with each other are connected in parallel to the power supply 50. The conductive path 28 of the conductive paint 27 is connected to the bridge circuit as the resistance Rx by connecting the lead wire 29 to the coating film of the conductive paint 27 at the base end of the pair of grooves 25a and 25b of the shielding rod 3. ing. The lead wire 29 can be connected to the coating of the conductive paint 27 by a known connecting means 30 such as a conductive adhesive or screw (see FIG. 2). The cathode side of the bridge circuit is grounded E. The resistor Rx of the bridge circuit, the contact 47 between the fixed resistors R2, the contact 49 between the fixed resistor R3 and the variable resistor R4 are connected to the input terminal 57 of the operational amplifier 51 (described later) of the detection unit 37.
ここで、遮断竿３が折損しておらず、導電性塗料２７の導電路２８が電気的に導通された正常状態において、導電路２８の抵抗Ｒｘに対して、センサ部３５の出力、すなわち、ブリッジ回路の接点４７、４９間が同電位（Ｖａ＝Ｖｂ）となるように可変抵抗Ｒ４の抵抗値を調整する。 Here, in a normal state where the blocking rod 3 is not broken and the conductive path 28 of the conductive paint 27 is electrically conducted, the output of the sensor unit 35 with respect to the resistance Rx of the conductive path 28, ie, The resistance value of the variable resistor R4 is adjusted so that the same potential (Va = Vb) is established between the contact points 47 and 49 of the bridge circuit.
検知部３７は、オペアンプ５１と、正常リレー５３と、故障リレー６３と、電源６１（陽極及び陰極を符号６１ａ及び６１ｂで表す）とを備えている。オペアンプ５１は、センサ部３５の出力、すなわち、ブリッジ回路の接点４７、４９間の電位差を増幅して出力端子５９に出力する。正常リレー５３は、オペアンプ５１の出力電圧に応じて、出力電圧が低い場合には、扛上（オン）を維持し、出力電圧が増大すると落下（オフ）する。故障リレー６３は、正常リレー５３の扛上（オン）によって扛上（オン）を維持し、正常リレー５３の落下（オフ）によって落下（オフ）して、異常（遮断竿３の折損）が集中監視装置、定常監視装置等の外部装置６７に通知される。
ここで、図４中に破線で示される電源６１、故障リレー６３及び外部装置６７は、既存の設備とすることができる。
The detection unit 37 includes an operational amplifier 51, a normal relay 53, a failure relay 63, and a power supply 61 (an anode and a cathode are represented by reference numerals 61a and 61b). The operational amplifier 51 amplifies the output of the sensor unit 35, that is, the potential difference between the contacts 47 and 49 of the bridge circuit, and outputs the amplified potential to the output terminal 59. The normal relay 53 maintains the on state (on) when the output voltage is low according to the output voltage of the operational amplifier 51, and falls (off) when the output voltage increases. The failure relay 63 maintains the on (on) state by the on (on) of the normal relay 53, and falls (off) by the falling (off) of the normal relay 53, and the abnormality (breaking of the blocking rod 3) is concentrated It is notified to an external device 67 such as a monitoring device or a steady state monitoring device.
Here, the power supply 61, the fault relay 63, and the external device 67, which are shown by broken lines in FIG. 4, may be existing equipment.
以上のように構成した一実施形態に係る踏切遮断機３の作動について次に説明する。
遮断竿３に折損が生じていない通常状態では、遮断竿３の導電性塗料２７の導電路２８が電気的に導通されている。この状態では、折損検知回路９のセンサ部３５では、導電路２８の抵抗Ｒｘが通常状態でブリッジ回路の接点４７、４９間が同電位（Ｖａ＝Ｖｂ）となっている。これにより、検知部３７のオペアンプ５１の出力電圧は、低く、正常リレー５３は、扛上（オン）を維持し、故障リレー６３も扛上（オン）を維持するので、外部装置６７に異常は通知されない。
Next, the operation of the level crossing breaker 3 according to the embodiment configured as described above will be described.
In a normal state in which the blocking rod 3 is not broken, the conductive path 28 of the conductive paint 27 of the blocking rod 3 is electrically conducted. In this state, in the sensor unit 35 of the breakage detection circuit 9, the resistance Rx of the conductive path 28 is in the normal state, and the contacts 47 and 49 of the bridge circuit are at the same potential (Va = Vb). As a result, the output voltage of the operational amplifier 51 of the detection unit 37 is low, and the normal relay 53 maintains the on state and the fault relay 63 also maintains the on state. Not notified
遮断竿３に折損が生じると、導電性塗料２７の塗膜が破断され、導電路２８が電気的な導通が遮断さて、センサ部３５のブリッジ回路では、導電路２８の抵抗Ｒｘが増大して、接点４７、４９に電位差が生じる（Ｖａ≠Ｖｂ）。検知部３７では、この電位差により、検知部３７のオペアンプ５１の出力電圧が増大して、正常リレー５３が落下（オフ）する。これにより、故障リレー６３も落下して、異常（遮断竿３の折損）が集中監視装置、定常監視装置等の外部装置６７に通知される。 When breakage occurs in the blocking wedge 3, the coating film of the conductive paint 27 is broken, the conduction path 28 is cut off electrically, and the resistance Rx of the conduction path 28 increases in the bridge circuit of the sensor unit 35. , A potential difference occurs at the contacts 47 and 49 (Va ≠ Vb). In the detection unit 37, the output voltage of the operational amplifier 51 of the detection unit 37 is increased by the potential difference, and the normal relay 53 is dropped (turned off). As a result, the fault relay 63 also falls, and an abnormality (the breakage of the blocking rod 3) is notified to the external device 67 such as the central monitoring device or the steady state monitoring device.
このようにして、導電性塗料２７の塗膜の破断による導電路２８の電気的な遮断又は電気抵抗の増大により、遮断竿３の破断を正確に検知することができる。遮断竿３が折損して完全に破断した場合には、導電性塗料２７の塗膜も確実に破断するので、そのような遮断竿３の折損を確実に検知することができる。また、導電性塗料２７は、充分軽量であるため、駆動部５の駆動力やウエイト１１の重量を調整する必要がない。 In this manner, the breakage of the barrier rib 3 can be accurately detected by the electrical interruption or the increase of the electrical resistance of the conductive path 28 due to the breakage of the coating of the conductive paint 27. When the blocking wedge 3 is broken and completely broken, the coating film of the conductive paint 27 is also surely broken, so that breakage of the blocking wedge 3 can be surely detected. Further, since the conductive paint 27 is sufficiently lightweight, it is not necessary to adjust the driving force of the drive unit 5 and the weight of the weight 11.
なお、上記実施形態に係る踏切遮断機１において、案内溝２５は、一対の溝２５ａ，２５ｂが遮断竿３の径方向の上部及び下部に配置されているが、一対の溝２５ａ，２５ｂを遮断竿３の径方向の他の位置、例えば左右に配置してもよく、あるいは、一対の溝２５ａ，２５ｂを遮断竿３の外周面の一側に配置してもよい。 In the crossing barrier 1 according to the above embodiment, the guide groove 25 has the pair of grooves 25a and 25b disposed at the upper and lower portions in the radial direction of the blocking rod 3, but blocks the pair of grooves 25a and 25b. It may be disposed at other positions in the radial direction of the weir 3, for example, on the left and right, or alternatively, the pair of grooves 25a, 25b may be disposed on one side of the outer peripheral surface of the blocking weir 3.
また、近隣に集中監視装置、定常監視装置等が設備されていない踏切設備の場合、図５に示すように、正常リレー５３に携帯端末６９を接続して携帯電話通信網７１を介して、遮断竿３の異常（折損）情報を最寄りの集中監視装置、定常監視装置等の外部装置６７、あるいは、保全指令員、鉄道係員等に伝達してもよい。 Also, in the case of crossing facilities where central monitoring devices, steady state monitoring devices, etc. are not installed nearby, as shown in FIG. 5, the portable terminal 69 is connected to the normal relay 53 and cut off via the mobile telephone communication network 71. The abnormality (breakage) information of the frame 3 may be transmitted to the local central monitoring device, the external device 67 such as a steady state monitoring device, or a maintenance commander, a railway clerk or the like.
１…踏切遮断機、３…遮断竿、９…折損検知回路（検知手段）、２７…導電性塗料、２８…導電路 DESCRIPTION OF SYMBOLS 1 ... Level crossing breaker, 3 ... Blocking rod, 9 ... Breakdown detection circuit (detection means), 27 ... Conductive paint, 28 ... Conductive path
Claims (4)
前記遮断竿に導電性塗料を塗布することによって形成された導電路と、
前記導電路の電気的な導通の遮断又は電気抵抗の増大を検知する検知手段と、を備えたことを特徴とする踏切遮断機。 In the crossing obstacle which opens and closes the crossing road by the blocking rod,
A conductive path formed by applying a conductive paint to the blocking weir;
And a detection means for detecting an interruption in the electrical continuity of the conductive path or an increase in the electrical resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018004952A JP2019123359A (en) | 2018-01-16 | 2018-01-16 | Crossing gate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018004952A JP2019123359A (en) | 2018-01-16 | 2018-01-16 | Crossing gate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2019123359A true JP2019123359A (en) | 2019-07-25 |
Family
ID=67397537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018004952A Pending JP2019123359A (en) | 2018-01-16 | 2018-01-16 | Crossing gate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2019123359A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4998906U (en) * | 1972-12-18 | 1974-08-26 | ||
| JPS6299260A (en) * | 1985-10-24 | 1987-05-08 | 三菱油化株式会社 | Crossing-bar breaking detector |
| JPS63312266A (en) * | 1987-06-13 | 1988-12-20 | Furukawa Electric Co Ltd:The | Breakage detecting device for crossing bard |
| JPH1056935A (en) * | 1996-06-10 | 1998-03-03 | Sanitsukusu:Kk | Method and apparatus for detecting termite |
| JP2007223546A (en) * | 2006-02-25 | 2007-09-06 | Sekisui Jushi Co Ltd | Breakage detection device for shut-off bar |
-
2018
- 2018-01-16 JP JP2018004952A patent/JP2019123359A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4998906U (en) * | 1972-12-18 | 1974-08-26 | ||
| JPS6299260A (en) * | 1985-10-24 | 1987-05-08 | 三菱油化株式会社 | Crossing-bar breaking detector |
| JPS63312266A (en) * | 1987-06-13 | 1988-12-20 | Furukawa Electric Co Ltd:The | Breakage detecting device for crossing bard |
| JPH1056935A (en) * | 1996-06-10 | 1998-03-03 | Sanitsukusu:Kk | Method and apparatus for detecting termite |
| JP2007223546A (en) * | 2006-02-25 | 2007-09-06 | Sekisui Jushi Co Ltd | Breakage detection device for shut-off bar |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101164639B (en) | Recovery-free type linear temperature-sensitive detector with short-circuit fault alarm | |
| JP5655229B2 (en) | Deterioration diagnostic tool for external gap lightning arrester | |
| KR101780712B1 (en) | Detecting device for overhead transmission line fault location | |
| US8395474B2 (en) | Position sensor cord, position sensor and planar position sensor | |
| US11130509B2 (en) | System and method for detecting a break in a railway track | |
| JP2018040775A (en) | Leakage current measurement method for transmission line arrester and measurement apparatus | |
| CN101226670B (en) | Shorted fault and alarming method for beyond-retrieve-type cable-type line-type heat fire detector | |
| JP2019123359A (en) | Crossing gate | |
| JP2011187375A (en) | Lightning arrester for power transmission | |
| IT201900002501A1 (en) | ROAD SAFETY BARRIER GROUP FOR THE DETECTION OF AN IMPACT OF A VEHICLE | |
| CN201203924Y (en) | Past retrieve cable type linetype temperature-sensing fire disaster detector | |
| US11519389B2 (en) | Electrical protection system for wind turbines | |
| JP4374598B2 (en) | Feeding cable monitoring device | |
| CN1987945A (en) | Short circuit warning method for non-recoverable linear temperature sensing detector | |
| JP3161649B2 (en) | Device for supporting partial discharge detection electrodes | |
| JP6069051B2 (en) | Power cable high resistance insulation failure location method and apparatus | |
| US20050230144A1 (en) | Tag line insulator | |
| JP2007335794A (en) | Deterioration detector for protection element | |
| EP3001203B1 (en) | Sensor for contactless detection of interrupted conductors in three-phase eletrical overhead line and related method | |
| EP3482999A1 (en) | The method for control and monitoring of an overhead line and a device for control and monitoring of an overhead line | |
| KR20200004620A (en) | Trouble monitoring apparatus and method of underground cable protection plate | |
| JP2005043220A (en) | Sensor and method for monitoring crack in concrete structure | |
| KR102693453B1 (en) | Apparatus of measuring hot-line insulation resistance | |
| EP3564690B1 (en) | A cable assembly | |
| JP2020187694A (en) | Monitoring system, monitoring method, monitoring device and computer program |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20201028 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20210806 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20210818 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20220224 |