EP3260172A1 - Engrenage de sécurité adapté pour être porté par un opérateur pour éviter de chuter d'une plateforme élévatrice - Google Patents

Engrenage de sécurité adapté pour être porté par un opérateur pour éviter de chuter d'une plateforme élévatrice Download PDF

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Publication number
EP3260172A1
EP3260172A1 EP16305744.1A EP16305744A EP3260172A1 EP 3260172 A1 EP3260172 A1 EP 3260172A1 EP 16305744 A EP16305744 A EP 16305744A EP 3260172 A1 EP3260172 A1 EP 3260172A1
Authority
EP
European Patent Office
Prior art keywords
aerial work
work platform
harness
security
fastening
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.)
Withdrawn
Application number
EP16305744.1A
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German (de)
English (en)
Inventor
Kai-Uwe Schmidt
Andre SUNKE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom Transport Technologies SAS
Original Assignee
Alstom Transport Technologies SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alstom Transport Technologies SAS filed Critical Alstom Transport Technologies SAS
Priority to EP16305744.1A priority Critical patent/EP3260172A1/fr
Publication of EP3260172A1 publication Critical patent/EP3260172A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
    • A62B35/0006—Harnesses; Accessories therefor
    • A62B35/0025—Details and accessories
    • A62B35/0037—Attachments for lifelines and lanyards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms

Definitions

  • the present invention relates to a security gear adapted to be worn by an operator to be secured from falling off an aerial work platform, comprising:
  • Such a security gear is known from WO 00/19052 A1 (D1).
  • This document discloses an operator with a security harness 811, as shown in Fig. 8, secured via a lanyard 804 to an aerialift basket. The operator wearing the security harness 811 is secured via the lanyard 804 from falling off the basket.
  • the lanyard 804 has a first snap-hook 803 at one end and a second snap-hook 808 at the other end.
  • the lanyard 804 is attached via the first snap-hook 803 to the basket, and via the second snap hook 808 to the security harness 811.
  • the security gear shown in Fig. 8 of D1 includes a lanyard connection detector for detecting proper attachment of the lanyard 804 to the operator.
  • This detector comprises a multi-wire cable 806 plugged with one end into a connector 805 arranged in the basket, and having a magnetic sensor 807 at the other end. The end with the magnetic sensor 807 is attached to the lanyard 804 close to the second snap hook 808.
  • the detector also comprises a permanent magnet 810 attached to the harness 811.
  • the permanent magnet 810 is supposed to magnetise the second snap hook 808 when the same is fastened to the harness 811.
  • This magnetisation is detected by the magnetic sensor 807.
  • the detection of a magnetic field by the magnetic sensor 807 is taken as an indication that the operator is successfully secured to the basket.
  • this known lanyard connection detector might not always correctly detect the presence of a secure connection between the lanyard 804 and the security harness 811. Indeed, the magnetic sensor 807 of the lanyard 804 might indicate that the operator is not secured even if he is secured.
  • the magnetic field created by the permanent magnet 810 is too weak or too distant in order to properly magnetise the correctly fastened second snap hook 808, meaning that the magnetic sensor will fail to signal that the operator is properly secured.
  • the permanent magnet 810 may be at least partially destroyed. In this situation, the operator will have to manually adjust the position of the fastened second snap hook 808, hoping that the magnetic sensor will finally detect a magnetic field.
  • the lanyard connection detector of Fig. 8 of D1 has a further drawback in that it requires a dedicated signalling cable 806. On top of that, the second snap hook 808 needs to be made of a special metal that can be easily magnetised by the permanent magnet 810.
  • Document WO 2012/109444 A2 presents further devices for detecting that an operator is safely secured via a lanyard 156 to an aerial lift basket 152. All of these devices lack a separate plugin cable such as the cable 806 of document D1.
  • the plug has an integrated trigger element adapted to trigger a harness connection sensor arranged in said socket when the plug is plugged into said socket, thus signalling a secure connection of the security harness to the aerial work platform.
  • the operator can signal a secure connection between the security harness and the aerial work platform by simply plugging the plug into a socket of the aerial work platform. Thanks to the plug/socket interface there is a well-defined relative position between the trigger element and the harness connection sensor, which leads to a more reliable triggering of the sensor.
  • the plugin cable can be a simple mechanical fastening cable and does not have to be an electrical signal transmission cable.
  • the inventive security gear may include one, several or all of the following features, in all technically feasible combinations:
  • the invention further relates to an aerial work platform having a basket for holding and lifting an operator, said basket comprising:
  • the inventive aerial work platform may include one, several or all of the following features, in all technically feasible combinations:
  • the invention further relates to a fall protection system for protecting an operator from falling from an aerial work platform, the system comprising:
  • a fall protection system 10 for protecting an operator (not shown) from falling from an aerial work platform 12.
  • the operator has to wear a security gear 14 (identified by the dotted line) in order to be protected from falling from the aerial work platform.
  • the security gear 14 comprises a security harness 16, a security lanyard 18 and a harness connection signalling device 20.
  • the security lanyard 18 comprises a fastening device 22 for fastening the security gear to the aerial work platform 12.
  • the harness connection signalling device 20 comprises a plug 24 for verification whether the operator is secured to the aerial work platform 12.
  • the aerial work platform 12 comprises a basket 26 for holding and lifting the operator.
  • the basket 26 is lifted by a lifting device (not shown).
  • An anchor point 28 is arranged on the aerial work platform 12 for fastening the security lanyard 18.
  • a socket 30 is arranged on the aerial work platform for receiving the plug 24 of the harness connection signalling device 20.
  • the aerial work platform 12 and its components will be described later in more detail.
  • the socket 30 is adapted for communicating a signal to a platform control unit 32.
  • the platform control unit 32 is electrically connected to an alarm device 34 adapted to indicate whether the operator is not secured, and to a turn-on switch 36 adapted to activate the platform control unit 32 and the basket 26.
  • the platform control unit 32, the alarm device 34 and the turn-on switch 36 will be described later in more detail.
  • the fall protection system 10 comprises an electrical power source (not shown) electrically connected to the turn-on switch 36.
  • the turn-on switch 36 is arranged in the fall protection system 10 such that the operator can actuate the turn-on switch from the outside of the aerial work platform 12.
  • the turn-on switch is located on wall in proximity to the aerial work platform 12.
  • the turn-on switch has a closed position and an opened position. In the closed position, the turn-on switch 36 is adapted to close an electrical circuit (not shown) adapted to supply electrical power from the electrical power source to the platform control unit 32 and to the lifting device in order to lift or to lower the basket 26. In other words, the turn-on switch 36 is adapted for turning on the aerial work platform 12. This means the aerial work platform is supplied with electrical power by the electrical power source and can be used for lifting an operator.
  • the turn-on switch 36 is adapted to stop electrical power supply between the electrical power source and the platform control unit 32 and/or the lifting device.
  • the platform control unit 32 is arranged for example on the aerial work platform 12.
  • the platform control unit 32 is connected via a sensor signal transmitting device 40 to the socket 30 of the aerial work platform 12 in order to receive a harness connection signal.
  • the sensor signal transmitting device 40 will be explained later.
  • the platform control unit 32 is adapted to analyse the harness connection signal received from the socket 30.
  • the platform control unit 32 is adapted to control the lifting device (not shown) in order to lift or to lower the aerial work platform 12.
  • the platform control unit 32 is electrically connected (not shown) to the lifting device (not shown).
  • the platform control unit 32 has a command unit 33 adapted to allow an operator to command the lifting device.
  • the platform control unit 32 is electrically connected to the alarm device 34 and adapted to activate or deactivate the alarm device 34 in order to warn the operator, depending on the harness connection signal, that the security gear is not attached to the aerial work platform.
  • the warning of the operator can be for example an acoustical warning signal emitted from the alarm device 34.
  • the warning can also be an optical warning signal or other type of warning signal.
  • the alarm device 34 of the fall protection system 10 is for example an alarm horn. Additionally, the alarm device 34 may comprise a warning light. The alarm device 34 is adapted to warn the operator when he or she is not properly secured to the aerial work platform 12.
  • the basket 26 of the aerial work platform 12 allows holding and lifting of the operator.
  • the basket 26 comprises a ground 27 adapted for the operator to stand on, and a lateral safety enclosure 29 for the operator to hold on.
  • the lateral safety enclosure can be switched from a closed position to an opened position to increase the free moving space.
  • the lateral safety enclosure has a maximum height HR comprised between 80 cm and 150 cm measured from the ground of the basket 26 in the closed position and comprised between 30 cm and 70 cm in the opened position.
  • the basket 26 is lifted via the lifting device which is for example a scissor lifting device (not shown) including an electrical motor (not shown) for deploying and retracting the scissor lifting device in order to lift and lower the basket 26.
  • a scissor lifting device (not shown) including an electrical motor (not shown) for deploying and retracting the scissor lifting device in order to lift and lower the basket 26.
  • the anchor point 28 of the aerial work platform 12 is arranged for example on the lateral safety enclosure 29 at a height HA comprised between 80 cm and 120 cm measured from the ground of the basket 26, particularly when the lateral safety enclosure is in the closed position.
  • the anchor point 28 is for example a metallic eye adapted to receive a hook.
  • the anchor point 28 is adapted for fastening one end of the security lanyard 18 of the security harness 16 of the operator thereto.
  • FIG. 2 shows a detailed view of the socket 30.
  • the socket 30 of the aerial work platform 12 is arranged for example also on the lateral safety enclosure 29 at a height HS comprised between 80 cm and 120 cm measured from the ground of the basket 26, particularly when the lateral safety enclosure is in the closed position.
  • the socket 30 is connected to the platform control unit 32 in order to communicate with the platform control unit 32 via a sensor signal transmitting device 40.
  • the sensor signal transmitting device 40 is adapted to transmit a harness connection signal from a harness connection sensor 46, when triggered, to the platform control unit 32.
  • the harness connection sensor 46 will be described later.
  • the sensor signal transmitting device 40 can be an electrical cable.
  • the socket 30 is adapted to receive the plug 24 of the security gear 14.
  • the socket 30 comprises a fastening apparatus 42, for example a pivoting fastening bracket having an opened position and a closed position. In the opened position the plug 24 can be connected to the socket 30 or removed from the socket 30. In the closed position, the plug 24 cannot be connected to the socket 30 or removed from the socket 30.
  • the fastening apparatus 42 is adapted to secure the plug 24 to the socket 30 in order to avoid accidental removal of the plug 24.
  • the fastening apparatus 42 is for example complementary to another fastening apparatus (such as a pair of opposite fastening studs) 44 arranged on the plug 24 in order to maintain the plug 24 when the fastening apparatus 42 is in its closed position.
  • the fastening apparatus 44 of the plug 24 is defined as a first fastening apparatus
  • the fastening apparatus 42 of the socket 30 is defined as a second fastening apparatus.
  • the socket 30 comprises the harness connection sensor 46 which is arranged therein.
  • the harness connection sensor 46 is electrically connected to the sensor signal transmitting device 40.
  • the harness connection sensor 46 is for example a magnetic sensor such as a reed switch or reed sensor or a hall effect sensor.
  • the harness connection sensor 46 is adapted to be triggered by the plug 24 when inserted in the socket 30.
  • the harness connection sensor 46 can be part of a safety relay module (not shown).
  • Part of the safety relay module can be arranged in the platform control unit 32.
  • the safety relay module allows triggering the alarm device 34.
  • the security gear 14 is adapted to be worn by the operator in order to secure him or her from falling off the aerial work platform 12.
  • the security gear 14 comprises the security harness 16 adapted to be donned by the operator, for example attached around the operator's hip, or around the upper part of the operator's body.
  • the plug 24 of the harness connection signalling device 20 is mechanically connected to the security harness 16.
  • the plug 24 is for example parallelepiped-shaped.
  • the plug 24 is adapted to be inserted in the socket 30.
  • the first fastening apparatus 44 is complementary to the second fastening apparatus 42 and consists for example of two studs arranged on two opposite sides of the plug 24.
  • the plug 24 has a trigger element 48 integrated into the plug which is adapted to trigger the harness connection sensor 46 when the plug is plugged into the socket 30.
  • the plug 24 is adapted for signalling a secure connection of the security harness 16 to the aerial work platform 12.
  • the trigger element 48 can be a permanent magnet.
  • the security lanyard 18 is permanently fastened with a first fastening end 19 to the security harness 16.
  • this first fastening end 19 is for example fastened to the security harness via a carabiner.
  • a second fastening end 21 of the lanyard 18 is equipped with the fastening device 22, for example a carabiner.
  • the fastening device 22 is adapted to be fixed to the anchor point 28 of the aerial work platform 12.
  • the fastening device 22 can be made out for example of aluminium, or other metals.
  • the fastening device 22 is adapted for fastening the security gear 14 to the aerial work platform 12.
  • the harness connection signalling device 20 is a plugin cable, for example a mechanical fastening cable, such as a metallic or non-metallic wire.
  • the harness connection signalling device 20 is permanently fastened with a fastening end 23 to the security harness 16.
  • This fastening end 23 is, for example, provided with a plug having at least two pins for fastening the harness connection signalling device 20 with the security harness 16.
  • a second end 25, called plugin end of the harness connection signalling device 20 is equipped with the plug 24.
  • the plug 24 may have two connection pins. In particular, it may be a 6 pin plug manufactured by Harting.
  • the operator dons the security gear 14, in particular the security harness 16. Then, he turns on the turn-on switch 36 and enters the basket 26 of the aerial work platform 12.
  • the platform control unit 32 verifies whether the harness connection sensor 46 of the socket 30 is sending a harness connection signal to the platform control unit 32.
  • the basket 26 of the aerial lifting platform 12 can be lifted or lowered.
  • the platform control unit 32 If no harness connection signal is received by the platform control unit 32, the platform control unit 32 concludes that the harness 16 is not secured to the aerial work platform 12. Then, the platform control unit 32 activates the alarm device 34 in order to warn the operator that he or she is not secured to the aerial work platform 12.
  • the operator inserts the plug 24 into the socket 30 and the trigger element 48 located in the plug 24 triggers the harness connection sensor 46 in the socket 30.
  • the harness connection sensor 46 sends a harness connection signal to the platform control unit 32, thus signalling a secure connection of the security harness to the aerial work platform.
  • the alarm device 34 When the platform control unit 32 receives the harness connection signal, the alarm device 34 is deactivated.
  • the operator can command the lifting device via the command unit 33 of the platform control unit 32 in order to lift or to lower the basket 26 of the aerial work platform 12.
  • the basket 26 can be lifted or lowered with help of the lifting device (not shown) independently whether the operator is secured or not. This allows to lift or to lower the basket 26 even when the harness connection sensor 46 has a malfunction.
  • the lifting device allows lifting or lowering of the aerial work platform 12 only if the harness connection signal is received by the platform control unit 32. This means that the aerial work platform can only be moved if the turn-on switch 36 is on and additionally, the plug 24 is inserted into the socket 30. This allows protecting the operator from moving the basket 26 when he or she is not secured to the aerial work platform 12.
  • the sensor signal transmitting device 40 may be a wireless signal transmitting module.
  • the socket 30 comprises a wireless transmitter for transmitting the harness connection signal to the platform control unit 32 and the platform control unit 32 comprises a wireless receiver for receiving the harness connection signal.
  • the wireless signal transmitting module has the advantage to avoid a cable communication to the platform control unit 32.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Forklifts And Lifting Vehicles (AREA)
EP16305744.1A 2016-06-20 2016-06-20 Engrenage de sécurité adapté pour être porté par un opérateur pour éviter de chuter d'une plateforme élévatrice Withdrawn EP3260172A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16305744.1A EP3260172A1 (fr) 2016-06-20 2016-06-20 Engrenage de sécurité adapté pour être porté par un opérateur pour éviter de chuter d'une plateforme élévatrice

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16305744.1A EP3260172A1 (fr) 2016-06-20 2016-06-20 Engrenage de sécurité adapté pour être porté par un opérateur pour éviter de chuter d'une plateforme élévatrice

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EP3260172A1 true EP3260172A1 (fr) 2017-12-27

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EP16305744.1A Withdrawn EP3260172A1 (fr) 2016-06-20 2016-06-20 Engrenage de sécurité adapté pour être porté par un opérateur pour éviter de chuter d'une plateforme élévatrice

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210284513A1 (en) * 2020-03-12 2021-09-16 Kile Stephen Nuehring System and Method of Managing a Lift Accident
US11633632B2 (en) 2019-03-22 2023-04-25 3M Innovative Properties Company Fall-protection system with monitoring system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000019052A1 (fr) 1998-09-30 2000-04-06 Baillargeon Paul D Protection anti-chute: systeme et methode
WO2012109444A2 (fr) 2011-02-09 2012-08-16 Baillargeon Paul D Système d'avertissement, de distribution de message et de journalisation utilisable pour surveillance de dispositifs antichute et de prévention, et procédé associé
US20130153335A1 (en) * 2011-12-19 2013-06-20 Haulotte Group Protecting device for a user of an aerial lift and aerial lift comprising such a device
US9149670B1 (en) * 2014-09-12 2015-10-06 Altec Industries, Inc. Lanyard interlock assembly
FR3034091A1 (fr) * 2015-03-27 2016-09-30 L'entreprise Electrique Dispositif de protection d'un utilisateur d'une nacelle elevatrice, procede d'utilisation et nacelle correspondants

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000019052A1 (fr) 1998-09-30 2000-04-06 Baillargeon Paul D Protection anti-chute: systeme et methode
WO2012109444A2 (fr) 2011-02-09 2012-08-16 Baillargeon Paul D Système d'avertissement, de distribution de message et de journalisation utilisable pour surveillance de dispositifs antichute et de prévention, et procédé associé
US20130153335A1 (en) * 2011-12-19 2013-06-20 Haulotte Group Protecting device for a user of an aerial lift and aerial lift comprising such a device
US9149670B1 (en) * 2014-09-12 2015-10-06 Altec Industries, Inc. Lanyard interlock assembly
FR3034091A1 (fr) * 2015-03-27 2016-09-30 L'entreprise Electrique Dispositif de protection d'un utilisateur d'une nacelle elevatrice, procede d'utilisation et nacelle correspondants

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11633632B2 (en) 2019-03-22 2023-04-25 3M Innovative Properties Company Fall-protection system with monitoring system
US11819714B2 (en) 2019-03-22 2023-11-21 3M Innovative Properties Company Fall-protection system with monitoring system
US20210284513A1 (en) * 2020-03-12 2021-09-16 Kile Stephen Nuehring System and Method of Managing a Lift Accident

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