JP2012235849A - Falling prevention safety device accommodated to box-shaped rail - Google Patents

Falling prevention safety device accommodated to box-shaped rail Download PDF

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JP2012235849A
JP2012235849A JP2011105757A JP2011105757A JP2012235849A JP 2012235849 A JP2012235849 A JP 2012235849A JP 2011105757 A JP2011105757 A JP 2011105757A JP 2011105757 A JP2011105757 A JP 2011105757A JP 2012235849 A JP2012235849 A JP 2012235849A
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safety device
pair
rail
claw
roller
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JP5710371B2 (en
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Kazuhiko Inoue
一彦 井上
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Fujii Denko Co Ltd
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Fujii Denko Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a safety device applicable to a box-shaped falling prevention rail already installed on a power transmission tower or the like, having stopping properties for reliably stopping even on a coated rail or the like, and having superior lifting/lowering properties.SOLUTION: This safety device 1 includes: a lever body 15 having a claw part 16 that is formed of a front claw 161 and a back claw 162; a pair of upper rollers 12; a pair of lower rollers 13; and two guide rollers 14a and 14b. The claw part 16 clamps a front plate 31 of a rail member from the front/back so as to improve the stopping property of the safety device 1 in a fall, so that, even when a load is applied to the horizontal direction of the perpendicularly-installed rail 3, the safety device is instantaneously stopped. In lifting/lowering, this safety device can smoothly move in the rail 3, with the claw 16 opened, using the respective rollers as guides.

Description

本発明は、鉄塔などの高層建造物に墜落防止用の設備として、高さ方向に連続して設置されたレールに、スライド可能に取り付けて、昇降時における墜落防止のために用いる墜落防止用安全器に関するものであり、特には、中央に上下方向の開口部を備えた断面が箱形形状(略角型パイプ状の形状)の墜落防止用レールに対応した墜落防止用安全器に関する。   The present invention is a fall prevention safety used for prevention of a fall at the time of ascending / descending, as a facility for preventing a fall in a high-rise building such as a steel tower, by slidably attaching to a rail continuously installed in the height direction. More particularly, the present invention relates to a fall-preventing safety device that corresponds to a fall-preventing rail having a box-like shape (substantially square pipe-like shape) with a vertical opening at the center.

送電鉄塔などの高層建造物には、作業者の昇降時・作業時における墜落防止のために、昇降用の梯子やステップボルト等の近傍に各種の墜落防止用レールが、上下方向に連続して設置されている。作業者は、それぞれの墜落防止用レールに対応した安全器をレールにセットし、その安全器と自分に装着した安全帯とを接続し、万が一足を踏み外した場合の墜落を防止している。   In high-rise buildings such as power transmission towers, various fall-prevention rails are connected in the vertical direction in the vicinity of elevating ladders, step bolts, etc., to prevent the workers from falling during elevating and working. is set up. The worker sets a safety device corresponding to each fall prevention rail on the rail, connects the safety device to the safety belt attached to himself / herself, and prevents a fall when he / she stepped out.

この送電鉄塔などの高層建造物は殆どが屋外設置であり、耐腐食性が求められている。特に海に近い沿岸部や工業地帯の近くに建設された送電鉄塔等は苛酷な環境下となり、より耐腐食性が要求される。この鉄塔等に設置される墜落防止用レールも同様の環境下におかれ、表面の腐食が懸念されるが、この防錆対策として、表面処理(一般的には、鉄製部材には溶融亜鉛メッキ、アルミ製部材には陽極酸化被膜)が施されている。また、環境調和鉄塔と呼ばれる鉄塔は、周囲の景観に調和するよう、塗装により彩色が施されている。
このレールの材質としては、アルミニュウムや鉄鋼が用いられるが、製造上の加工性や曲げレールの曲げ加工性等より、一般的にはアルミ製が多い。
Most of the high-rise buildings such as power transmission towers are installed outdoors, and corrosion resistance is required. In particular, power transmission towers and the like constructed near coastal areas and industrial zones are in a harsh environment and are required to have more corrosion resistance. The anti-fall rails installed on the steel towers are placed in the same environment and there is concern about surface corrosion. However, as a rust prevention measure, surface treatment (generally, hot galvanizing is applied to iron members). The aluminum member is provided with an anodized film. In addition, steel towers called environmental harmony towers are colored by painting so as to harmonize with the surrounding landscape.
As the material of the rail, aluminum or steel is used, but generally aluminum is often used because of the workability in manufacturing and the bending workability of the bending rail.

この墜落防止用のレールと安全器を組み合わせた墜落防止装置の方式として、レールに孔やノッチを設け、墜落時には安全器の係合部が係合して落下を阻止する方式と、レール面は滑面で、安全器にブレーキ部材又は爪部材(摺動掛止部材)を設け、ブレーキ部材が圧接して連続量で停止させる方式、または爪部材がレールの表裏面を掴持する方式等がある。通常、何れの方式でも、墜落時には安全器がレール上で瞬時に停止する必要があるため、ばねが組み込まれており、そのばねは、作業者の落下が発生して安全器が外力を受けなくなったとき、つまり爪部材がフリーな状態となったときに、ばねが効いてブレーキ部材又は爪部材が作動する方向に組み込まれている。   As a method of a fall prevention device combining this fall prevention rail and a safety device, a hole or a notch is provided in the rail, and at the time of the fall, the engagement portion of the safety device engages to prevent the fall, and the rail surface is For smooth surfaces, a brake member or claw member (sliding latch member) is provided on the safety device, and the brake member is pressed against and stopped by a continuous amount, or the claw member grips the front and back surfaces of the rail. is there. Normally, in any method, since the safety device needs to stop instantaneously on the rail when it crashes, a spring is incorporated, and the safety device does not receive external force due to the fall of the worker. When the claw member is in a free state, the spring is effective and the brake member or the claw member is incorporated in the operating direction.

墜落防止装置の性能として、十分な墜落阻止機能を備えることの他に、作業者が昇降する際の良好な昇降性が要求される。昇降時にレールにセットした安全器のブレーキ部材や爪部材が引っ掛かることなく昇降できるように、作業者が腰を引くことにより前記ばねを解放させて昇降する方式(腰引きタイプ)や、レールにセットした安全器を吊り下げ状態として、安全器の自重により前記ばねを解放させ、爪部材をレールと非接触としながら昇降する方式(追従タイプ)等がある。この追従タイプの安全器は、レール表面に規定外の凹凸があった場合等に爪部材が引っ掛かることが多いが、腰引きタイプの場合は、強制的にばねを解放しているので、ブレーキ部材が引っ掛かることが少ない。   As the performance of the fall prevention device, in addition to having a sufficient fall prevention function, a good elevating ability is required when the operator moves up and down. A system that lifts and lowers the spring by pulling the waist (waist pulling type) or set on the rail so that the brake member or pawl member of the safety device set on the rail can be lifted and lowered without being caught. There is a system (follow-up type) in which the safety device is suspended and the spring is released by its own weight, and the claw member is moved up and down without contacting the rail. In this follow-up type safety device, the claw member is often caught when there are irregularities on the rail surface, but in the case of the waist type, the spring is forcibly released, so the brake member Is less likely to get caught.

また、墜落防止用安全器は万が一事故が発生した際に人命を守るものであるので、作業者は作業を開始する前に必ず点検(始業時点検)を実施して、各部の変形や摩耗をチェックする。ロープ等の繊維製部品や樹脂製のローラなどは、特に念入りに点検する必要がある。墜落等により大きな荷重が加わった場合にも点検(臨時点検)を実施する。更に、メーカーの専門技術者や教育を受けた作業員により、定期的により詳しい点検(定期点検)を実施することが望ましい。   In addition, since a safety device for crash prevention protects human life in the event of an accident, the worker must perform an inspection (inspection at the start of work) before starting work to prevent deformation and wear of each part. To check. Fiber parts such as ropes and resin rollers need to be inspected especially carefully. Even when a heavy load is applied due to a crash, etc., an inspection (temporary inspection) is performed. Furthermore, it is desirable to carry out more detailed inspections (periodic inspections) regularly by professional engineers and trained workers.

従来の墜落防止用安全器としては、特許文献1の特公昭55−35142号公報のものがあり、また、この安全器と組み合わされる表面処理が施された墜落防止用レールに関して、安全器の停止性能を向上させために考案された技術として、特許文献2の特開2001−333993号公報のものがある。また、爪部材を有する追従タイプの墜落防止用安全器の技術として、特許文献3の実開昭55−166257号公報のものがある。   As a conventional safety device for crash prevention, there is one disclosed in Japanese Patent Publication No. 55-35142 of Patent Document 1, and the safety device is stopped with respect to a crash prevention rail subjected to surface treatment combined with this safety device. As a technique devised for improving the performance, there is one disclosed in Japanese Patent Application Laid-Open No. 2001-333993 of Patent Document 2. Further, as a technology of a follow-up type safety device for preventing a fall having a claw member, there is one disclosed in Japanese Utility Model Publication No. 55-166257.

特許文献1に記載の墜落防止用安全器は、中央に上下方向の開口部を備えた箱形形状のレールにセットし、その開口部が設けられた一辺をガイド部としてスライドするもので、そのガイド部に対して外側にブレーキ部材が接触し、内側にローラが接触するようにされている。この安全器は腰引きタイプの安全器であり、昇降性を向上させるために、一般的には前記のような外側ブレーキ・内側ローラ機構になっている。   The fall-preventing safety device described in Patent Document 1 is set on a box-shaped rail having an opening in the vertical direction at the center, and slides using one side provided with the opening as a guide portion. The brake member is in contact with the guide portion on the outer side, and the roller is in contact with the inner side. This safety device is a waist pulling type safety device, and generally has the above-described outer brake / inner roller mechanism in order to improve elevating performance.

特許文献2に記載の墜落防止用レールは、前記のようにレール表面に表面処理や塗装が施された場合において、墜落阻止時の停止距離を短くするために、レールの安全器のブレーキ部材との接触領域に、一条または複数条の突起条を長手方向に設け、接触抵抗を増やしたものである。   The crash prevention rail described in Patent Document 2 is provided with a brake member of a rail safety device in order to shorten the stop distance when the fall is prevented when surface treatment or coating is applied to the rail surface as described above. In the contact region, one or a plurality of protrusions are provided in the longitudinal direction to increase the contact resistance.

特許文献3に記載の墜落防止用安全器は、断面がI型形状のレールにセットする追従タイプの安全器である。箱形形状レールの場合、安全器がレールの内側を移動する「レール内移動タイプ」となり、I型形状レールの場合、安全器がレールを外側より包み込んで移動する「レール包み込みタイプ」となる。ここで、送電鉄塔等に墜落防止用レールが設置されるときに、鉄塔部材やステップ等により、安全器をセットした状態の大きさ(昇降状態における幅、高さ)が制約されることがある。このときの大きさ(幅、高さ)が同じである場合、レール内移動タイプの方が上下または左右の一対のローラがとレールとが接するピッチを長くして、安全器セット時の安定性を向上することができる。また、ローラ自体の径も大きくできるので、安全器セット時の安定性が向上し、昇降時の抵抗も少なく昇降性が向上する。   The fall-preventing safety device described in Patent Document 3 is a follow-up type safety device that is set on a rail having an I-shaped cross section. In the case of a box-shaped rail, the safety device is an “in-rail movement type” in which the inner side of the rail moves, and in the case of an I-shaped rail, the safety device is a “rail-wrapping type” in which the safety device wraps and moves the rail from the outer side. Here, when the fall prevention rail is installed on the power transmission tower or the like, the size (width and height in the lifted state) in which the safety device is set may be restricted by a steel tower member or a step. . If the size (width and height) at this time is the same, the moving type in the rail has a longer pitch at which the upper and lower or left and right pair of rollers are in contact with the rail, and stability when the safety device is set Can be improved. In addition, since the diameter of the roller itself can be increased, the stability when the safety device is set is improved, the resistance during raising and lowering is small, and the raising and lowering properties are improved.

特公昭55−35142号公報Japanese Patent Publication No.55-35142 特開2001−333993号公報JP 2001-333993 A 実開昭55−166257号公報Japanese Utility Model Publication No. 55-166257

特許文献2に記載されているように、特許文献1の腰引きタイプ安全器は、防錆及び環境調和のため塗装等が施されたレールにおける停止距離の拡大を最大限に防止する必要がある。   As described in Patent Document 2, the waistline type safety device of Patent Document 1 needs to prevent the stop distance from being extended to the maximum extent in a rail that has been coated for rust prevention and environmental harmony. .

また、作業者が昇降中にバランスを崩し逆さ吊り状態(仰向けに落下)で滑落するなど、作業者の落下する体勢によっては、レールに加わる力が瞬間的に前方向に力が加わった後に下方向に加わることもある。この前方向に力が加わる時間は瞬間であり、腰引きタイプの安全器の外側ブレーキ・内側ローラ機構であっても停止距離に影響を及ぼすものではないが、レールの前方向に荷重が加わったときでもブレーキが作動する方が望ましい。   In addition, depending on the posture of the worker falling, such as when the worker loses balance and slides upside down (falling on his back) while moving up and down, the force applied to the rail may be reduced after the force is momentarily applied forward. Sometimes it adds to the direction. The time to apply the force in the forward direction is instantaneous, and even the outer brake / inner roller mechanism of the waist pull type safety device does not affect the stopping distance, but a load is applied in the forward direction of the rail. Even when the brake is working, it is desirable.

また、いくら安全器の性能を向上させたとしても、主要な部品に変形や摩耗があったとき、本来の性能が発揮できないことが懸念される。そのためには、使用前の始業時点検や定期的に実施する定期点検、更には耐用年数の管理等が必要である。現在、この製造年月(製造番号)や定期点検実績の履歴は、工事会社の管理台帳やメーカーでの出荷履歴台帳等で管理されているが、工事管理者からは定期点検の徹底を図るため、管理方法の変更が望まれていた。   Moreover, no matter how much the performance of the safety device is improved, there is a concern that the original performance cannot be exhibited when the main parts are deformed or worn. For this purpose, it is necessary to conduct a start-up inspection before use, a periodic inspection to be carried out regularly, and management of the service life. Currently, the manufacturing date (manufacturing number) and the history of periodic inspection results are managed by the construction company's management ledger, the manufacturer's shipping history ledger, etc .; A change in management method was desired.

そこで本発明は、送電鉄塔等に既設された箱形形状の墜落防止用レールに適用でき、塗装レールでも確実に停止できる停止性能を有し、かつ昇降性に優れ、更に容易に履歴管理が行える安全器の提供を目的としている。   Therefore, the present invention can be applied to a box-shaped fall prevention rail already installed on a power transmission tower or the like, has a stopping performance capable of reliably stopping even a painted rail, has excellent elevating properties, and can easily manage history. The purpose is to provide safety devices.

上記課題を解決するため、本発明は安全器を、安全器本体と、一対の上ローラと、一対の下ローラと、2ケのガイドローラと、爪部を備えた梃子体とから構成する。この一対の上ローラは、ローラ摺動溝内を摺動するように安全器本体の上部に回転自在に軸止されている。また、一対の下ローラも、上ローラと同様に安全器本体の下部に回転自在に軸止されている。また、2ケのガイドローラは、対向した一対の開口立片を摺動するように、上ローラ及び下ローラと直交する方向で、安全器本体に回転自在に軸止されている。これら各ローラをガイドとして、安全器はレール内をスムーズに移動できる。   In order to solve the above problems, the present invention comprises a safety device comprising a safety device body, a pair of upper rollers, a pair of lower rollers, two guide rollers, and a lever body provided with a claw portion. The pair of upper rollers are rotatably supported at the upper portion of the safety device main body so as to slide in the roller sliding groove. The pair of lower rollers is also rotatably supported at the lower part of the safety device main body, like the upper roller. Further, the two guide rollers are rotatably supported by the safety device main body in a direction orthogonal to the upper roller and the lower roller so as to slide on a pair of opposed opening pieces. Using each of these rollers as a guide, the safety device can move smoothly in the rail.

上記梃子体は、作業者が装着する安全帯と接続可能な環部を一端に備え、他端に前爪と裏爪とから成る爪部を備え、爪部に前爪の一面と裏爪の一面とが対向して平行に配置された前板通過溝が形成されている。また、前爪がレールの一対の前板の表面と接触し、裏爪が一対の前板の裏面と接触するように、爪部は梃子体の中央より両側に突出して形成されている。また、この梃子体は、その環部が上方向に回動したときに、前板通過溝と一対の前板とが平行となる位置であり、環部が下方向に回動したときに、前板通過溝を形成する裏爪の上端と、その裏爪と対向する前爪の下端とが一対の前板と当接して、その一対の前板を表裏より掴持するよう、回動可能に軸止されている。このように、前爪と裏爪とでレールの一対の前板を各々掴持することで、墜落時における安全器の停止性能が向上する。   The above-mentioned insulator body is provided with a ring portion that can be connected to a safety belt worn by an operator at one end, a claw portion composed of a front nail and a back nail at the other end, and one surface of the front nail and a back nail on the nail portion. A front plate passage groove is formed which is arranged in parallel with one surface facing each other. Further, the claw portion is formed to protrude from the center of the insulator body to both sides so that the front claw contacts the surface of the pair of front plates of the rail and the back claw contacts the back surface of the pair of front plates. Further, this insulator is a position where the front plate passage groove and the pair of front plates are parallel when the ring portion is rotated upward, and when the ring portion is rotated downward, The upper end of the back claw that forms the front plate passage groove and the lower end of the front claw that faces the back claw are in contact with the pair of front plates so that the pair of front plates can be gripped from the front and back. It is fixed to the shaft. In this way, by holding the pair of front plates of the rail with the front and back claws, the stopping performance of the safety device at the time of crashing is improved.

特許文献1の安全器は、ブレーキ部材がレールの一対の前板の表面に接触し、ローラが一対の前板の裏面に接触する構造とされているが、本発明の安全器は、前爪と裏爪がレールの一対の前板の表裏と接触する構造であるので、逆さ吊り状態での滑落等、垂直に設置したレールの前方向に荷重が加わったとしても瞬時に停止する。   The safety device of Patent Document 1 has a structure in which the brake member is in contact with the front surfaces of the pair of front plates of the rail and the roller is in contact with the back surfaces of the pair of front plates. Since the back and front claws are in contact with the front and back of the pair of front plates of the rail, even if a load is applied in the front direction of the rail installed vertically, such as sliding down in an upside-down state, it stops instantaneously.

更に、本発明の安全器は安全器本体の上部に軸止した一対の上ローラの径が、安全器本体の下部に軸止した一対の下ローラの径に比して、小径とされている。詳しくは、一対の下ローラ径を、安全器がレールに取り付けられた状態において、一対の前板と裏板の間である一対のローラ摺動溝の前後にほぼ摺接可能な径として、安全器のレール前後方向のガタつきを低減している。一方、上ローラは梃子体の環部が上方向に回動した際には裏板と接触するよう安全器本体に配置されており、このとき下ローラは前板と接触しており、安全器がスムーズに移動できる。尚かつ、梃子体の環部が下方向に回動して梃子体の前爪と裏爪とが一対の前板を掴持した際に、上ローラが一対の前板と接触して爪部の機能を阻害しないよう、上ローラの径は下ローラ径より小径とされている。このように上ローラの径を小径とすることにより、落下阻止時における爪部の機能を阻害することがなく、落下を阻止する力を接触によって分散することもない。   Furthermore, in the safety device of the present invention, the diameter of the pair of upper rollers pivoted on the upper portion of the safety device body is smaller than the diameter of the pair of lower rollers pivoted on the lower portion of the safety device body. . Specifically, the diameter of the pair of lower rollers is defined as a diameter that can be almost slidably contacted before and after the pair of roller sliding grooves between the pair of front and back plates in a state where the safety device is attached to the rail. Reduces back and forth rail play. On the other hand, the upper roller is arranged in the safety device main body so as to come into contact with the back plate when the ring portion of the insulator body is rotated upward. At this time, the lower roller is in contact with the front plate. Can move smoothly. In addition, when the ring portion of the insulator body is rotated downward and the front and back claws of the insulator body grip the pair of front plates, the upper roller comes into contact with the pair of front plates and the claw portion. The diameter of the upper roller is smaller than the diameter of the lower roller so as not to hinder the function of the lower roller. By making the diameter of the upper roller small in this way, the function of the claw portion at the time of dropping prevention is not hindered, and the force for preventing dropping is not dispersed by contact.

また、安全器本体の裏面または前面に平滑面を設け、その平滑面に凹部を設け、安全器に関する情報を記録するICチップを、その凹部に封止用樹脂により封止している。これによりICチップは安全器本体に埋め込まれた状態となり、覆われた樹脂の表面が損傷してもICチップは損傷することはない。また、このICチップには、製造番号、出荷先、点検日、修理箇所等が記録され、履歴管理される。   In addition, a smooth surface is provided on the back surface or the front surface of the safety device body, a recess is provided on the smooth surface, and an IC chip for recording information on the safety device is sealed in the recess with a sealing resin. As a result, the IC chip is embedded in the safety device body, and even if the surface of the covered resin is damaged, the IC chip is not damaged. In addition, the manufacturing number, the shipping destination, the inspection date, the repair location, etc. are recorded on this IC chip, and the history is managed.

前板の中央に開口部を備えた箱形形状のレールに、本発明の安全器をスライド可能に取り付けることで、レールに表面処理や塗装が施された場合においても、墜落阻止時の停止距離を短くすることができる。また、レール内移動タイプの利点を生かし、ローラを大きくし、レールとローラとが接するピッチを長くして、安全器をレールにセットしたときに安定した昇降性を得ることができる。また、ICタグを安全器本体に埋め込むことにより、履歴管理が容易になり、定期点検の徹底が図れる。   By mounting the safety device of the present invention slidably on a box-shaped rail with an opening in the center of the front plate, even if the rail is surface-treated or painted, the stopping distance when preventing a crash Can be shortened. Further, taking advantage of the in-rail movement type, the roller can be enlarged, the pitch at which the rail and the roller are in contact with each other can be lengthened, and stable elevating performance can be obtained when the safety device is set on the rail. In addition, by embedding the IC tag in the safety device body, history management becomes easy and thorough periodic inspection can be achieved.

本発明の実施形態に係る安全器1が示された斜視図である。It is the perspective view by which the safety device 1 which concerns on embodiment of this invention was shown. 本発明の安全器1が示された上面図及び側面図である。It is the top view and side view by which the safety device 1 of this invention was shown. 本発明の安全器1がレール3と共に示された爪部部分断面の上面図及び部分断面の爪部回動の説明図である。The safety device 1 of this invention is the top view of the nail | claw part partial cross section with which the rail 3 was shown, and explanatory drawing of the claw part rotation of a partial cross section. 本発明の安全器1がランヤード2と共に示された側面図である。1 is a side view showing a safety device 1 of the present invention together with a lanyard 2. FIG. 本発明の安全器1の爪部16の作動状態を説明する側面図である。It is a side view explaining the operating state of the nail | claw part 16 of the safety device 1 of this invention. 本発明の実施形態に係る安全器1が示された裏面よりの斜視図である。It is a perspective view from the back surface in which the safety device 1 which concerns on embodiment of this invention was shown. 本発明の安全器1が適用される墜落防止用の箱形形状レールの上面図及び一部省略の側面図である。It is the upper side figure of the box-shaped rail for fall prevention to which the safety device 1 of this invention is applied, and a side view with some omissions.

<本発明の安全器が適用される箱形形状の墜落防止用レール>
以下、図面を参照しつつ本発明に係る実施の形態について説明する。図7(a)及び(b)は、本発明の安全器1が適用される墜落防止用の箱形形状のレール3の上面図及び一部省略の側面図である。このレール3は、鉄塔などの高層建造物に墜落防止用の設備として、高さ方向に連続して設置されている。ここで、本発明のレールを説明する図面、及びレールに安全器がセットされた図面において、図面の右方向を前方向、左方向を裏方向、図面の上下方向が高さ方向の上下として説明する。
<Box-shaped fall prevention rail to which the safety device of the present invention is applied>
Embodiments according to the present invention will be described below with reference to the drawings. FIGS. 7A and 7B are a top view and a partially omitted side view of a box-shaped rail 3 for preventing a fall to which the safety device 1 of the present invention is applied. The rail 3 is continuously installed in a height direction as a facility for preventing a fall in a high-rise building such as a steel tower. Here, in the drawings explaining the rail of the present invention and the drawings in which the safety device is set on the rail, the right direction of the drawing is the front direction, the left direction is the back direction, and the vertical direction of the drawing is the vertical direction of the height direction. To do.

図7(a)に示すように、レール3は断面が箱形形状(略角型パイプ状の形状)であり、中央に上下方向の開口部34を備え、一対の前板31,31と、一対の側板32,32と、裏板33で形成されており、一対の前板31,31の開口側端部に開口部34に沿って一対の開口立片35,35が設けられており、一対の前板31,31と裏板33の間に一対のローラ摺動溝36,36が配置されている。図示しないが、規定長さのレールをジョイント金具により連結し、専用の取付金具により一定間隔で鉄塔部材等に配置固定されている。   As shown in FIG. 7 (a), the rail 3 has a box-like cross section (substantially square pipe shape), an opening 34 in the vertical direction at the center, and a pair of front plates 31, 31; A pair of side plates 32, 32 and a back plate 33 are formed, and a pair of opening upright pieces 35, 35 are provided along the opening 34 at the opening side end portions of the pair of front plates 31, 31. A pair of roller sliding grooves 36, 36 are arranged between the pair of front plates 31, 31 and the back plate 33. Although not shown in the drawing, rails of a specified length are connected by joint fittings and are arranged and fixed to a steel tower member or the like at a fixed interval by dedicated mounting fittings.

図1は、本発明の実施形態に係る安全器1が示された斜視図であり、図2(a)及び(b)は、本発明の安全器1が示された上面図及び側面図である。これらの図に示すように、本発明の安全器1は、安全器本体11と、一対の上ローラ12,12と、一対の下ローラ13,13と、2ケのガイドローラ14a,14bと、爪部16を備えた梃子体15とから構成されている。   FIG. 1 is a perspective view showing a safety device 1 according to an embodiment of the present invention, and FIGS. 2A and 2B are a top view and a side view showing the safety device 1 of the present invention. is there. As shown in these drawings, the safety device 1 of the present invention includes a safety device body 11, a pair of upper rollers 12, 12, a pair of lower rollers 13, 13, two guide rollers 14a, 14b, It is comprised from the insulator 15 provided with the nail | claw part 16. FIG.

この一対の上ローラ12,12は、レール3のローラ摺動溝36内を摺動できるように、安全器本体11の上部に回転自在に軸止されている。また、一対の下ローラ13,13も、レール3のローラ摺動溝36内を摺動できるように、安全器本体11の下部に回転自在に軸止されている。また、2ケのガイドローラ14a,14bは、レール3の対向した一対の開口立片35,35を摺動できるように、上ローラ12及び下ローラ13と直交する方向で、安全器本体11に回転自在に軸止されている。安全器1は、これら各ローラをガイドとして、レール3内をスムーズに移動できる。   The pair of upper rollers 12 and 12 are rotatably supported on the upper part of the safety device main body 11 so as to slide in the roller sliding groove 36 of the rail 3. Further, the pair of lower rollers 13 and 13 are also rotatably fixed to the lower portion of the safety device main body 11 so as to be able to slide in the roller sliding groove 36 of the rail 3. Further, the two guide rollers 14a and 14b are attached to the safety device main body 11 in a direction perpendicular to the upper roller 12 and the lower roller 13 so that the pair of opening upright pieces 35 and 35 opposed to the rail 3 can slide. The shaft is rotatably supported. The safety device 1 can move smoothly in the rail 3 using each of these rollers as a guide.

上記梃子体15は、作業者が装着する安全帯と接続可能な環部151を一端に備え、他端に前爪161と裏爪162とから成る爪部16を備えている。この爪部16には前爪161の一面と裏爪162の一面とが対向して平行に配置された前板通過溝163が形成されている。   The insulator body 15 includes a ring portion 151 that can be connected to a safety belt worn by an operator at one end, and a claw portion 16 that includes a front claw 161 and a back claw 162 at the other end. The claw portion 16 is formed with a front plate passage groove 163 in which one surface of the front claw 161 and one surface of the back claw 162 are opposed and arranged in parallel.

図3(a)、(b)、(c)は、本発明の安全器1がレール3と共に示された爪部16の部分断面の上面図、X−Xでの梃子体15の断面を示した爪部回動の説明図である。図3(b)は梃子体15の環部151が上方向に回動した状態を、図3(c)は梃子体15の環部151が下方向に回動した状態を示している。
図1及び図3(a)から(c)に示すように、梃子体15は、上下は上ローラ12と下ローラ13の間の位置で、前後はレールセット状態でのレール3より前側の位置で、安全器本体11に回動可能に軸止されている。また、軸152にはバネ17が設けられており、このバネ17は爪部16の前爪161と裏爪162とがレール3の前板31を掴持する方向に付勢している。よって、作業者は自分に連結した安全器1のバネ17に抗して掴持を解いた状態で昇降するが、墜落時にはバネ17が瞬時に作動するので、停止距離が短くなる。
3A, 3B, and 3C are top views of partial cross sections of the claw portion 16 in which the safety device 1 of the present invention is shown together with the rail 3, and a cross section of the insulator body 15 at XX. It is explanatory drawing of the nail | claw part rotation. FIG. 3B shows a state where the ring portion 151 of the insulator body 15 is rotated upward, and FIG. 3C shows a state where the ring portion 151 of the insulator body 15 is rotated downward.
As shown in FIGS. 1 and 3 (a) to 3 (c), the insulator body 15 is positioned between the upper roller 12 and the lower roller 13 in the upper and lower positions, and the front and rear positions in front of the rail 3 in the rail set state. Thus, the safety device main body 11 is pivotally supported. The shaft 152 is provided with a spring 17, and the spring 17 is biased in a direction in which the front claw 161 and the back claw 162 of the claw portion 16 grip the front plate 31 of the rail 3. Therefore, the operator moves up and down in the state where the grip is released against the spring 17 of the safety device 1 connected to him / her, but the spring 17 operates instantaneously at the time of falling, so the stop distance is shortened.

図3(a)に示すように、前爪161がレール3の一対の前板31,31の表面と接触し、裏爪162が一対の前板31,31の裏面と接触するように、爪部16は梃子体15の中央より両側に突出して形成されている。
図3(b)は、梃子体15の環部151が最も上方向に回動した状態を示しており、このときに、前板通過溝163と前板31とが平行になるように構成されている。
図3(c)は、梃子体15の環部151が最も下方向に回動した状態を示しており、このときに、前板通過溝163を形成する裏爪162の上端と、その裏爪162と対向する前爪161の下端とが前板31と当接して、その前板31を表裏より掴持するように構成されている。
As shown in FIG. 3A, the front claws 161 are in contact with the surfaces of the pair of front plates 31, 31 and the back claws 162 are in contact with the back surfaces of the pair of front plates 31, 31. The portion 16 is formed so as to protrude from the center of the insulator body 15 to both sides.
FIG. 3B shows a state in which the ring portion 151 of the insulator body 15 is rotated most upward. At this time, the front plate passage groove 163 and the front plate 31 are configured to be parallel to each other. ing.
FIG. 3C shows a state in which the ring portion 151 of the insulator body 15 has been rotated downward. At this time, the upper end of the back claw 162 forming the front plate passage groove 163 and the back claw thereof are shown. The lower end of the front claw 161 facing the 162 is in contact with the front plate 31 so that the front plate 31 is gripped from the front and back.

このように、本発明の安全器1は、前爪161と裏爪162がレール3の一対の前板31,31の表裏を掴持する構造であるので、垂直に設置したレール3の前方向に荷重が加わったとしても即座に停止する。   Thus, the safety device 1 of the present invention has a structure in which the front claw 161 and the back claw 162 grip the front and back of the pair of front plates 31 and 31 of the rail 3, so that the front direction of the rail 3 installed vertically Even if a load is applied, it stops immediately.

ここで、上ローラ12と下ローラ13のローラ径(外径)について説明する。先ず、下ローラ13の径は、安全器1がレール3に取り付けられた状態において、前板31と裏板33の間であるローラ摺動溝36の前後にほぼ摺接可能な径であり、安全器1のレール前後方向のガタつきを低減している。また、上下のガイドローラ14a,14bと相俟って、安全器1のレール左右方向のガタつきも低減している。このように下ローラ13のローラ径を出来る限り大きくすることにより、レール3と安全器1とのガタつきが少なくなり、作業者が昇降する際の昇降性が向上する。   Here, the roller diameters (outer diameters) of the upper roller 12 and the lower roller 13 will be described. First, the diameter of the lower roller 13 is a diameter that can be substantially slidably contacted before and after the roller sliding groove 36 between the front plate 31 and the back plate 33 in a state where the safety device 1 is attached to the rail 3. The backlash of the safety device 1 in the longitudinal direction of the rail is reduced. Further, in combination with the upper and lower guide rollers 14a and 14b, rattling of the safety device 1 in the left-right direction of the rail is reduced. Thus, by making the roller diameter of the lower roller 13 as large as possible, rattling between the rail 3 and the safety device 1 is reduced, and the liftability when the worker moves up and down is improved.

一方、上ローラ12は梃子体15の環部151が上方向に回動した際には、図3(b)のA点で、裏板33と接触するよう安全器本体11に配置されており、このとき下ローラ13は前板31とB点で接触しており、安全器1はスムーズに移動できる。かつ、図3(c)に示すように、梃子体15の環部151が下方向に回動して梃子体15の前爪161と前板31がC点で接触し、裏爪162と前板31がD点で接触して、前板31を掴持した際に、上ローラ12が前板31と接触して爪部16の機能を阻害しないよう、上ローラ12は、その径を下ローラ13径より小径とされて安全器本体11に配置されている。このとき、上ローラ12の最前点であるE点は、前板31と接触せず、上ローラ12と前板31とには隙間がある。もし、爪部16が前板31を掴持するよりも先に、上ローラ12が前板31と接触した場合、落下の衝撃による荷重が爪部16と上ローラ12に分散され、落下を阻止するべく爪部16に加わる力が減少してしまう。   On the other hand, the upper roller 12 is arranged in the safety device main body 11 so as to come into contact with the back plate 33 at the point A in FIG. 3B when the ring portion 151 of the insulator body 15 rotates upward. At this time, the lower roller 13 is in contact with the front plate 31 at the point B, and the safety device 1 can move smoothly. Further, as shown in FIG. 3C, the ring portion 151 of the insulator body 15 is rotated downward so that the front claw 161 of the insulator body 15 and the front plate 31 are in contact at the point C, and the back claw 162 and the front claw 162 are in contact with each other. The upper roller 12 has a lower diameter so that the upper roller 12 does not come into contact with the front plate 31 and obstruct the function of the claw portion 16 when the plate 31 comes into contact with the point D and grips the front plate 31. The diameter of the roller 13 is smaller than the diameter of the roller 13 and is arranged in the safety device main body 11. At this time, point E which is the foremost point of the upper roller 12 does not contact the front plate 31, and there is a gap between the upper roller 12 and the front plate 31. If the upper roller 12 comes into contact with the front plate 31 before the claw portion 16 grips the front plate 31, the load caused by the drop impact is distributed to the claw portion 16 and the upper roller 12 to prevent the fall. As a result, the force applied to the claw portion 16 is reduced.

図4は、本発明の安全器1がランヤード2と共に示された側面図である。図4に示すように、ランヤード2はフック21a,21bと、ロープ22と、衝撃緩衝体23と、から構成され、ランヤード連結金具24で安全器1に連結されている。この衝撃緩衝体23は、折り畳まれて縫い合わされたベルトを備えており、所定以上の衝撃荷重が加わると、この折り畳まれたベルトの縫い糸が切断して伸ばされ、その衝撃を吸収する機能を有している。   FIG. 4 is a side view showing the safety device 1 according to the present invention together with the lanyard 2. As shown in FIG. 4, the lanyard 2 includes hooks 21 a and 21 b, a rope 22, and an impact buffer 23, and is connected to the safety device 1 by a lanyard connecting bracket 24. The impact buffer 23 has a belt that is folded and stitched together. When an impact load of a predetermined level or more is applied, the sewing thread of the folded belt is cut and stretched, and has a function of absorbing the impact. doing.

図4に示す形態は一例であり、Y型と呼ばれるフックを2ケ備えたタイプであるが、フックは1ケでもよく、カラビナ等で連結してもよい。また、衝撃緩衝体23を備えずにロープ22がランヤード連結金具24に直接連結されてもよい。このランヤード連結金具24は、使用中ランヤード2に撚りが残らないように縒り戻し機構を備える事が望ましい。   The form shown in FIG. 4 is an example, and is a type provided with two hooks called Y-types. However, the hook may be one, and may be connected by a carabiner or the like. Further, the rope 22 may be directly connected to the lanyard connecting bracket 24 without providing the impact buffer 23. The lanyard coupling bracket 24 is preferably provided with a turning back mechanism so that no twist remains in the lanyard 2 during use.

図5(a)乃至(d)は、本発明の安全器1の爪部16の作動状態を説明する側面図である。図5(a)は「昇降時の状態」であり、ランヤード連結金具24は上方向を向いており、前述したA点とB点がレール3と接触している。この安全器1は、レール3にセットした安全器1を吊り下げ状態として、安全器1の自重によりバネ17を解放させ、爪部16をレール3と非接触としながら昇降する追従タイプであり、昇るときも降りるときも、同じ状態である。   FIGS. 5A to 5D are side views for explaining the operating state of the claw portion 16 of the safety device 1 of the present invention. FIG. 5A shows the “state during lifting”, the lanyard coupling fitting 24 faces upward, and the points A and B mentioned above are in contact with the rail 3. This safety device 1 is a follow-up type in which the safety device 1 set on the rail 3 is in a suspended state, the spring 17 is released by its own weight, and the claw portion 16 is moved up and down while not in contact with the rail 3, The situation is the same when going up and down.

図5(b)は、爪部16が前板31と接触し始めて「昇降性が悪くなる状態」であり、下ローラ13は前板31とB点で、前爪161が前板31とC点でレール3と接触している。昇降性を検証した実験では、ランヤード連結金具24の中心線と水平線の成す角度が約60°となったとき、上ローラ12が裏板33から離れ、梃子体15の前爪161が前板31とC点で接触し、作業者の昇降に追従していた安全器1が追従しなくなった。   FIG. 5B shows a state where the claw portion 16 starts to contact the front plate 31 and the “lowering / lowering performance is deteriorated”, the lower roller 13 is at the point B with the front plate 31, and the front claw 161 is at the front plate 31 and C. It is in contact with the rail 3 at a point. In the experiment for verifying the liftability, when the angle formed by the center line of the lanyard connecting bracket 24 and the horizontal line is about 60 °, the upper roller 12 is separated from the back plate 33 and the front claw 161 of the insulator 15 is moved to the front plate 31. And the safety device 1 that followed the operator's up and down movement no longer follow.

図5(c)は、前爪161と裏爪162が前板31を掴持し始めて「停止が始まる状態」であり、前述したC点とD点がレール3と接触している。同じく昇降性を検証した実験では、ランヤード連結金具24の中心線と水平線の成す角度が約32°となったとき、この状態が確認できた。
図5(d)は、前爪161と裏爪162が前板31を確実に掴持する「完全停止の状態」であり、設計値ではランヤード連結金具24の中心線と水平線の成す角度が6°以下である。
FIG. 5 (c) shows a “state where the stop is started” when the front claw 161 and the back claw 162 begin to grip the front plate 31, and the points C and D mentioned above are in contact with the rail 3. Similarly, in the experiment for verifying the liftability, this state was confirmed when the angle formed by the center line of the lanyard fitting 24 and the horizontal line was about 32 °.
FIG. 5D shows a “completely stopped state” in which the front claw 161 and the back claw 162 reliably hold the front plate 31, and the design value indicates that the angle formed by the center line of the lanyard coupling bracket 24 and the horizontal line is 6. ° or less.

万が一墜落事故が発生したとき、安全器1の爪部16は図5(a)乃至(d)に示す動きをして落下を阻止する。このとき、垂直に設置したレール3の水平方向に荷重が加わったとしても即座に停止する。具体的には、作業者が落下する体勢は様々であり、作業者が仰向けに落下して逆さ吊り状態となったとき、荷重がレール3の前方向に加わるが、本発明の安全器1は即座に停止する。   In the unlikely event that a crash occurs, the claw portion 16 of the safety device 1 moves as shown in FIGS. 5A to 5D to prevent the fall. At this time, even if a load is applied in the horizontal direction of the rail 3 installed vertically, the rail 3 stops immediately. Specifically, the posture in which the worker falls varies, and when the worker falls on his back and enters an upside down state, a load is applied in the forward direction of the rail 3, but the safety device 1 of the present invention is Stop immediately.

ここで、本発明の安全器1が適用されるレール3は箱形形状レールであり、安全器1がレール3の内側を移動する「レール内移動タイプ」である。上ローラ12、下ローラ13共に、特許文献3の安全器と比べると、その径が明らかに大きく、上下または左右の一対のローラとレールとが接するピッチも長い。これにより、安全器セット時の安定性が良く、昇降時の抵抗も少なく昇降性が良い。   Here, the rail 3 to which the safety device 1 of the present invention is applied is a box-shaped rail, and is a “in-rail movement type” in which the safety device 1 moves inside the rail 3. Both the upper roller 12 and the lower roller 13 are clearly larger in diameter than the safety device of Patent Document 3, and the pitch at which the pair of upper and lower or left and right rollers and the rail are in contact with each other is long. Thereby, stability at the time of a safety device setting is good, resistance at the time of raising / lowering is small, and raising / lowering property is good.

図6は、本発明の実施形態に係る安全器1が示された裏面よりの斜視図である。図6に示すように、安全器本体11の裏面に平滑面が設けられており、その平滑面に凹部111が設けられている。その凹部111に、安全器1に関する情報を記録するICチップ18が、アンテナと共に封止用樹脂により封止されている。これによりICチップ18は安全器本体11に埋め込まれた状態となり、覆われた樹脂の表面が損傷してもICチップ18は損傷することはない。   FIG. 6 is a perspective view from the back side showing the safety device 1 according to the embodiment of the present invention. As shown in FIG. 6, a smooth surface is provided on the back surface of the safety device body 11, and a recess 111 is provided on the smooth surface. In the recess 111, the IC chip 18 for recording information related to the safety device 1 is sealed with a sealing resin together with the antenna. As a result, the IC chip 18 is embedded in the safety device main body 11, and the IC chip 18 is not damaged even if the surface of the covered resin is damaged.

本実施形態では、安全器本体11の裏面に凹部111を設けたが、前面や側面でもよく、平滑面を有する箇所の方が加工性は良いが、特に平滑面を設ける必要はない。また、このICチップ18には、製造番号、出荷先、点検日、修理箇所等が記録され、履歴管理される。このように、ICタグを安全器本体に埋め込むことにより、履歴管理が容易になり、定期点検の徹底が図れる。   In this embodiment, although the recessed part 111 was provided in the back surface of the safety device main body 11, although a front surface or a side surface may be sufficient and the direction which has a smooth surface has better workability, it is not necessary to provide a smooth surface in particular. The IC chip 18 records a production number, a shipping destination, an inspection date, a repair location, etc., and manages the history. Thus, by embedding the IC tag in the safety device main body, history management becomes easy and thorough periodic inspection can be achieved.

1 安全器
11 安全器本体
111 凹部
12 上ローラ
13 下ローラ
14a,14b ガイドローラ
15 梃子体
151 環部
152 軸
16 爪部
161 前爪
162 裏爪
163 前板通過溝
17 バネ
18 ICチップ
2 ランヤード
21a,21b フック
22 ロープ
23 衝撃緩衝体
24 ランヤード連結金具
3 レール
31 前板
32 側板
33 裏板
34 開口部
35 開口立片
36 ローラ摺動溝
DESCRIPTION OF SYMBOLS 1 Safety device 11 Safety device main body 111 Concave part 12 Upper roller 13 Lower roller 14a, 14b Guide roller 15 Insulator body 151 Ring part 152 Shaft 16 Claw part 161 Front claw 162 Back claw 163 Front plate passage groove 17 Spring 18 IC chip 2 Lanyard 21a , 21b hook
22 Rope 23 Shock absorber 24 Lanyard connecting bracket 3 Rail 31 Front plate 32 Side plate 33 Back plate 34 Opening portion 35 Opening piece 36 Roller sliding groove

Claims (3)

鉄塔などの高層建造物の高さ方向に連続して配置固定され、中央に上下方向の開口部を備えた一対の前板と一対の側板と裏板とから成る断面箱形形状であり、前記一対の前板の開口側端部に前記開口部に沿った一対の開口立片が設けられ、前記一対の前板と裏板の間に一対のローラ摺動溝が配置されたレールに、前記一対のローラ摺動溝に摺接して前記開口部内を上下移動可能な墜落防止用安全器において、
前記開口部を移動する安全器本体と、前記一対のローラ摺動溝内を摺動すべく前記安全器本体の上部に回転自在に軸止された複数の上ローラと、前記一対のローラ摺動溝内を摺動すべく前記安全器本体の下部に回転自在に軸止された複数の下ローラと、対向した前記一対の開口立片を摺動すべく前記安全器本体に回転自在に前記上ローラ及び前記下ローラと直交する方向で軸止された複数のガイドローラと、前記安全器本体に軸止され前記開口部を移動する梃子体と、から構成され、
前記梃子体が、作業者が装着する安全帯と接続可能な環部を一端に備え、他端に前爪と裏爪とから成り、前記前爪の一面と前記裏爪の一面とが対向して平行に配置された前板通過溝が形成された爪部を備え、前記爪部は前記梃子体の中央より両側に突出して形成されており、
前記梃子体は、その環部が上方向に回動したときに、前板通過溝と前記一対の前板とが平行となる位置であり、環部が下方向に回動したときに、前記前板通過溝を形成する前爪の下端と、その前爪と対向する裏爪の上端とが前記一対の前板と当接して、その一対の前板を表裏より掴持するよう、回動可能に軸止されており、
且つ前記安全器本体の上部に軸止した上ローラの径が、前記安全器本体の下部に軸止した下ローラの径に比して、小径とされていることを特徴とする墜落防止用安全器。
It is arranged and fixed continuously in the height direction of a high-rise building such as a steel tower, and has a cross-sectional box shape comprising a pair of front plates, a pair of side plates and a back plate provided with an opening in the vertical direction in the center, A pair of opening upright pieces along the opening are provided at the opening side end portions of the pair of front plates, and the pair of roller sliding grooves are disposed between the pair of front plates and the back plate. In the fall-preventing safety device that can slide up and down in the opening by slidingly contacting the roller sliding groove,
A main body of the safety device that moves through the opening, a plurality of upper rollers rotatably supported on the upper portion of the main body of the safety device to slide in the pair of roller sliding grooves, and the pair of roller slides A plurality of lower rollers rotatably supported at the lower portion of the safety device main body to slide in the groove and a pair of opposed opening uprights to slide on the safety device main body. A plurality of guide rollers axially fixed in a direction orthogonal to the roller and the lower roller, and an insulator that is axially fixed to the safety device main body and moves through the opening,
The insulator body is provided with a ring portion that can be connected to a safety belt worn by an operator at one end, and is composed of a front nail and a back nail at the other end, and one surface of the front nail and one surface of the back nail face each other. A claw portion formed with a front plate passage groove arranged in parallel, and the claw portion is formed to protrude from the center of the insulator body to both sides,
The insulator is a position where the front plate passage groove and the pair of front plates are parallel when the ring portion is rotated upward, and when the ring portion is rotated downward, Rotate so that the lower end of the front claw forming the front plate passage groove and the upper end of the back claw facing the front claw abut against the pair of front plates and grip the pair of front plates from the front and back sides. It is fixed to the shaft
The diameter of the upper roller pivoted on the upper part of the safety device main body is smaller than the diameter of the lower roller pivoted on the lower part of the safety device main body. vessel.
前記下ローラの径は、前記安全器が前記レールに取り付けられた状態において、前記一対の前板と裏板の間である一対のローラ摺動溝の前後にほぼ摺接可能な径とされており、
前記上ローラが、前記梃子体の環部が上方向に回動して前記梃子体の前板通過溝と前記一対の前板とが平行となった際に前記裏板と接触し、且つ前記梃子体の環部が下方向に回動して前記梃子体の前爪と裏爪とが前記前板を掴持した際に、前記前板と接触しない小径とされていることを特徴とする請求項1に記載の墜落防止用安全器。
The diameter of the lower roller is a diameter that can be substantially slidably contacted before and after a pair of roller sliding grooves between the pair of front and back plates in a state where the safety device is attached to the rail.
The upper roller is in contact with the back plate when the ring portion of the insulator body rotates upward and the front plate passage groove of the insulator body and the pair of front plates are parallel to each other, and When the ring portion of the insulator body is rotated downward and the front and back claws of the insulator body grip the front plate, the diameter is small so as not to contact the front plate. The safety device for fall prevention according to claim 1.
前記安全器本体に凹部が設けられており、前記凹部に安全器に関する情報を記録するICチップが、封止用樹脂により封止されていることを特徴とする請求項1又は請求項2に記載墜落防止用安全器。   The concave part is provided in the said safety device main body, and the IC chip which records the information regarding a safety device in the said recessed part is sealed with sealing resin. Fall prevention safety device.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101297477B1 (en) 2013-03-13 2013-08-16 황여진 Emergency braking apparatus for multiple folding ladder elevator
CN103432695A (en) * 2013-08-23 2013-12-11 中国十七冶集团有限公司 Pulling and falling-preventing device for step ladder of tower crane
CN108843233A (en) * 2018-08-13 2018-11-20 武汉航瑞科技有限公司 A kind of oblique/vertical terraced fall-preventing protection device
KR102131955B1 (en) * 2019-11-13 2020-07-08 이욱열 Rope Horizontal Shifter

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5535142B2 (en) * 1975-10-01 1980-09-11
JPS55166257U (en) * 1979-05-17 1980-11-29
JPH0737214U (en) * 1993-12-24 1995-07-11 朝日金属精工株式会社 Fall prevention device
JPH09154963A (en) * 1995-12-08 1997-06-17 Hokuriku Kasen Kogyo Kk Fall prevention safety device
JP2001333993A (en) * 2000-05-26 2001-12-04 Sanwa Koki Kk Rail for prevention device against fall
JP2006313425A (en) * 2005-05-06 2006-11-16 Hitachi Plant Technologies Ltd Safety belt device for work
US20060283662A1 (en) * 2003-09-12 2006-12-21 Frank Martin Fall arrester as part of a fall protection system for ladders and similar climbing routes

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5535142B2 (en) * 1975-10-01 1980-09-11
JPS55166257U (en) * 1979-05-17 1980-11-29
JPH0737214U (en) * 1993-12-24 1995-07-11 朝日金属精工株式会社 Fall prevention device
JPH09154963A (en) * 1995-12-08 1997-06-17 Hokuriku Kasen Kogyo Kk Fall prevention safety device
JP2001333993A (en) * 2000-05-26 2001-12-04 Sanwa Koki Kk Rail for prevention device against fall
US20060283662A1 (en) * 2003-09-12 2006-12-21 Frank Martin Fall arrester as part of a fall protection system for ladders and similar climbing routes
JP2006313425A (en) * 2005-05-06 2006-11-16 Hitachi Plant Technologies Ltd Safety belt device for work

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101297477B1 (en) 2013-03-13 2013-08-16 황여진 Emergency braking apparatus for multiple folding ladder elevator
CN103432695A (en) * 2013-08-23 2013-12-11 中国十七冶集团有限公司 Pulling and falling-preventing device for step ladder of tower crane
CN108843233A (en) * 2018-08-13 2018-11-20 武汉航瑞科技有限公司 A kind of oblique/vertical terraced fall-preventing protection device
CN108843233B (en) * 2018-08-13 2023-09-19 武汉航瑞科技有限公司 Oblique/vertical ladder anti-falling protection device
KR102131955B1 (en) * 2019-11-13 2020-07-08 이욱열 Rope Horizontal Shifter

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