WO2020149757A1 - Chaises de cabine de grue adaptées de manière ergonomique - Google Patents

Chaises de cabine de grue adaptées de manière ergonomique Download PDF

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Publication number
WO2020149757A1
WO2020149757A1 PCT/RS2019/000002 RS2019000002W WO2020149757A1 WO 2020149757 A1 WO2020149757 A1 WO 2020149757A1 RS 2019000002 W RS2019000002 W RS 2019000002W WO 2020149757 A1 WO2020149757 A1 WO 2020149757A1
Authority
WO
WIPO (PCT)
Prior art keywords
seat
crane
chair
operator
operators
Prior art date
Application number
PCT/RS2019/000002
Other languages
English (en)
Inventor
Vesna SPASOJEVIC BRKIC
Zorica VELJKOVIC
Nikola DONDUR
Original Assignee
Univerzitet U Beogradu
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 Univerzitet U Beogradu filed Critical Univerzitet U Beogradu
Priority to PCT/RS2019/000002 priority Critical patent/WO2020149757A1/fr
Priority to RS20210887A priority patent/RS63434B1/sr
Publication of WO2020149757A1 publication Critical patent/WO2020149757A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/52—Details of compartments for driving engines or motors or of operator's stands or cabins
    • B66C13/54—Operator's stands or cabins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable

Definitions

  • the present invention belongs to the field of crane cabins’ chairs. Specifically, it is related to a crane cabins’ chair which is ergonomically adapted and enables operator to take different positions in work and rest periods, thus improving the productivity of the crane operators as well as the safety.
  • Cranes belong to the most dangerous equipment used both in the industry and at the construction sites. Despite the awareness of the existing risks, incidents in crane’s operations have not substantially decreased. Crane operators work long hours in constrained workspaces taking extremely awkward postures.
  • An object of the present invention is to solve the problems described above by providing the crane cabin chair which is ergonomically adjusted, suiting crane operators’ needs for both operating i.e. work, and non-operating i.e. rest regimen, the chair having 10° forward seat slope and components for supporting the legs, thus providing higher productivity and quality of work, together with improved crane operators’ life quality but also safety at site.
  • CN 105565170 (2016-05-11) invention discloses a crane cabin with a rotatable seat that can massage buttocks of drivers, in order to promote blood circulation, prevent the discomfort caused by long-term operation of the drivers and increase the comfort level.
  • This invention enables appropriate braking effect and contains insulation in order to reduce noise, too.
  • CN206955478 relates to the crane seats, in particular to a container crane driver seat. It solves the problem of driver's seat generally not being adjustable to the operator’s height, so the operator's neck and lumbar spine cause a great burden, which causes cervical and lumbar spondylosis. According to this invention, it is possible to adjust the height of the operator seat using pneumatic cylinders, so that the driver can still sit on the seat to check the lifting condition of the container.
  • the cabin shall be equipped with a chair suitable for operating the crane while minimizing operator fatigue and allowing efficient work performance and communications. Still, there is a need for a crane cabin chair design that will be ergonomically adjusted, suitable for an operator in both work and rest periods and economically justified.
  • a chair comprising a sloping seat, where the slope is 10° forwards, and the support for legs, which is intended for use in non-operating periods.
  • This is extremely important as the crane operators use 30-70% of total time spent in the crane cabin for maneuvering, while the rest of the time spent in the crane cabin, using conventional chairs, they sit in uncomfortable position.
  • forward sloping seat enables position in which muscles at the front and back of the thighs are in relaxed balance during the work periods, while the support for legs is placed under the chair during operation and is extracted as needed during the non-operating periods.
  • 10° forward slope and legs support components thus enable periods of work and rest of an operator in two different positions.
  • the chair according to the present invention allows transition of muscle activity from relaxed to active phase and vice versa, free blood circulation, especially in operators’ legs, relieving spinal column, discus and lumbar part by changing position, relieving the upper legs which receive the highest load when sitting and even more, stretching of the body.
  • the chair according to the present invention given its adjustable size, could be mounted and used in all cabins known in the art.
  • Algorithm application using as an example Malawin crane operators, provides solutions given in Figures 1-4.
  • interior space for this ergonomically extremely convenient solution may, only by the way of example, have the following dimensions 1230x1100x1675/1865 mm.
  • Inclined seat solution in which muscles at the front and back of the thighs are in relaxed balance, is especially appropriate for crane operators due to their bent and inclined position and due to visibility from the cab issues, while transparent leg support system, beside enabling rest of an operator, enables good vision field for an operator, too.
  • crane cabin chair has two main strategies: to enable ergonomic position of crane operator during operating period but also to enable comfortable operator position in non- working period.
  • it provides 10° forwards slope and legs support components to cover operator comfortable accommodation in operating i.e. work and non operating i.e. rest periods, in confined, a smallest possible space.
  • the ergonomic chair comprises a leg support system, a telescopic mechanism and a seat, wherein the seat in fixed connection with telescopic mechanism and sloped forward 10°. It further comprises a horizontal adjustment mechanism and a handle, which is positioned underneath the seat and wherein the horizontal adjustment mechanism is movable by using handle. In one further embodiment, the ergonomic chair further comprises a hinge mechanism and a backrest, wherein the hinge mechanism is used for tilting the backrest.
  • Telescopic mechanism has two ends, and said telescopic mechanism is positioned vertically relative to the fixing plate, said telescopic mechanism being fixed on its first end to the fixing plate, and wherein on its second end it is mounted to the seat.
  • the leg support system further comprises the first sliding frame, the second sliding frame and a supporting frame, said sliding frames being coated with transparent material to enable operator vision field.
  • the supporting frame comprises a locking means which activates when sliding frames are drawn out and wherein the first sliding frame when drawn out extends from the seat to the supporting frame and wherein the second sliding frame when drawn out extend from the supporting frame away from the seat.
  • the leg support system is on casters. It is possible that the second sliding frame and the supporting frame are on casters. When sliding frames are drawn out, then the first sliding frame and the second sliding frame form the line with the seat sloped forward 10°.
  • Figure 1 shows the chair design based on all crane operators anthropometric body sizes, using Malawin sample to solve problem for all operators, including those that are the most vulnerable - tall crane operators, using both univariate - 5 L /99 L percentils and multivariate approach to obtain different body sizes models.
  • Modeling algorithm includes the origin of the coordinate system at the fixed point of contact between the crane operator’s heel and cabin floor in front of the foot pedal next to the right foot, visual angles for the whole predicted range of operators of 60° and kinematics modeling of large anthropometric measurements with aim to take as small as possible space.
  • visual angle of 60° when looking downwards is possible for the whole range of the operators.
  • the angle of the seat surface has been enabled in all positions, so that the femur is in forward sloping and the hip and the seat surface form an angle of 10°, due to the fact that lumbar disk pressures increase for seat pan inclinations above 10°.
  • the arm span for using manual commands is designed in accordance with the head position and movement, horizontal and vertical seat adjustment and other dimensions and angles, from the shoulder joint to the hand with folded fingers.
  • the chair position may be adjusted horizontally (e.g. 160mm) and vertically (e.g.180mm) to cover all body models.
  • the minimum total height of the interior and cabin door is equal to the stature of the highest operator in shoes with clothes, approximately 1,865 mm in order for comfortable entry into the cabin, while for sitting position of approximately 1675 mm is needed.
  • the length of the seating surface of 350 mm, the height of the backrest of 550 mm and adjustable headrest (around 150 mm) are determined by the anthropometric measurements of the operator with the lowest dimensions.
  • the smallest operators’ lower leg determines the length of the first component of legs support system (e.g. 420 mm), while its' the second parts length is determined by chairs' vertical movement step (e.g. 180 mm) and the longest leg dimension (the second part length amounts e.g. 410 mm plus casters length e.g. 25 mm).
  • the length of the leg support system shall be adjusted to the height of the operator.
  • the leg support extension system comprises two transparent frames, which are pivotally connected to each other by sliding mechanism, since frames poses channels that provide longitudinal movement of the second slider.
  • the ergonomic chair according to the present invention includes the leg support system (extended in crane operator’s non-operating i.e. rest period).
  • the ergonomics of arm movements determines control units positions.
  • the chair according to the present invention and as illustrated in Figure 4, contains plate 1 and four screws 2a, 2b, 2c, 2d (bolts and nuts) which are used to mount the chair to the floor, telescopic mechanism 3 is positioned vertically relative to the plate 1, to which it is mounted, caries other chair elements and enables vertical chair adjustment (using handle 4 positioned underneath the seat) and full rotation of operator, seat 5, which is fixed to telescopic mechanism and sloped forward 10°, horizontal adjustment mechanism 16 which is movable using handle 6 that is positioned underneath the seat, and hinge mechanism 7 for tilting the backrest 8, all together in turn can then be tilted 90° sideways to enable operator entrance/exit in small cabin space.
  • screws 2a, 2b, 2c, 2d bolts and nuts
  • the backrest 8 has the mechanism 9 for adjusting the angle of inclination of the seat back, by rotating round knob in one direction or the other, the back being easily and independently movable to its foremost position.
  • Head rest 10 is vertically adjustable.
  • the leg support system 11 is mounted on chairs’ axle using hinge mechanism 18 and consists of two carrying sliding frames 12, 13 and one supporting frame 14. Two carrying sliding frames are coated with transparent material to enable operator vision field. Sliding frame 13 has to be pulled as much as needed by the operator leg length.
  • the third supporting frame 14 has locking mechanism 15 which is movable using handle 17 that has to be activated when support is drawn out. Both the second and the third are relying on casters to enable chair rotation movement. Since proposed invention has to enable pedal force exertion, the same sample of operators has tested the prototype and adequate results have been obtained, as shown in Table 1.
  • the crane cabin chair according to the present invention may be used by any user or producer of crane cabins.
  • the present crane cabins' chair may be mounted in any type of crane cabin, since it occupies the smallest possible space, thus significantly reducing the mass of the cabin.
  • it enables comfortable work and rest of crane operator (and consequently operators’ health benefits - lower MSDs prevalence).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Special Chairs (AREA)
  • Seats For Vehicles (AREA)

Abstract

L'invention concerne une chaise de cabine de grue fournissant une position confortable pour un opérateur à la fois dans un régime de fonctionnement et un régime de non-fonctionnement. La chaise est caractérisée par un système de support de siège et de jambes conçu de manière ergonomique, approprié pour une grande variété d'opérateurs de grue (y compris des opérateurs de grande taille, qui sont les plus vulnérables). La chaise ergonomique a un siège de courte longueur, avec une pente avant de 10°, réglable horizontalement et fixé sur un mécanisme télescopique qui permet un réglage vertical et le dossier avec des mécanismes qui permettent son inclinaison et son basculement. Des systèmes de support de jambes, contenant deux cadres porteurs, coulissants et un cadre transparent de support, pendant une période de travail, sont pliés sous le siège et pendant la période de repos simultanément avec l'inclinaison du dossier, pourraient être étendus à la longueur souhaitée de manière à ce que l'opérateur ait un risque plus faible de TMS et ait un bon champ de vision.
PCT/RS2019/000002 2019-01-18 2019-01-18 Chaises de cabine de grue adaptées de manière ergonomique WO2020149757A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/RS2019/000002 WO2020149757A1 (fr) 2019-01-18 2019-01-18 Chaises de cabine de grue adaptées de manière ergonomique
RS20210887A RS63434B1 (sr) 2019-01-18 2019-01-18 Ergonomski prilagođene stolice u kranskim kabinama

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/RS2019/000002 WO2020149757A1 (fr) 2019-01-18 2019-01-18 Chaises de cabine de grue adaptées de manière ergonomique

Publications (1)

Publication Number Publication Date
WO2020149757A1 true WO2020149757A1 (fr) 2020-07-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RS2019/000002 WO2020149757A1 (fr) 2019-01-18 2019-01-18 Chaises de cabine de grue adaptées de manière ergonomique

Country Status (2)

Country Link
RS (1) RS63434B1 (fr)
WO (1) WO2020149757A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111947960A (zh) * 2020-08-28 2020-11-17 南京林业大学 一种用于坐具体压分布测试研究的仿真装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003025886A (ja) * 2001-07-10 2003-01-29 Kubota Corp 運転席の反転支持装置
US20110304192A1 (en) * 2010-06-15 2011-12-15 Augustat Betty A Ergometric Chair Apparatus
CN105565170A (zh) 2015-12-30 2016-05-11 安徽省超盛起重机械有限公司 一种带有可旋转座椅的起重机驾驶室
CN206955478U (zh) 2017-07-31 2018-02-02 陈清莲 一种集装箱起重机司机座椅
DE102016011354A1 (de) * 2016-09-20 2018-03-22 Liebherr-Werk Biberach Gmbh Steuerstand für einen Kran, Bagger und dergleichen
CN106183902B (zh) * 2016-10-09 2018-09-11 苏州美适宜医疗设备有限公司 调节椅架以及调节座椅

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003025886A (ja) * 2001-07-10 2003-01-29 Kubota Corp 運転席の反転支持装置
US20110304192A1 (en) * 2010-06-15 2011-12-15 Augustat Betty A Ergometric Chair Apparatus
CN105565170A (zh) 2015-12-30 2016-05-11 安徽省超盛起重机械有限公司 一种带有可旋转座椅的起重机驾驶室
DE102016011354A1 (de) * 2016-09-20 2018-03-22 Liebherr-Werk Biberach Gmbh Steuerstand für einen Kran, Bagger und dergleichen
CN106183902B (zh) * 2016-10-09 2018-09-11 苏州美适宜医疗设备有限公司 调节椅架以及调节座椅
CN206955478U (zh) 2017-07-31 2018-02-02 陈清莲 一种集装箱起重机司机座椅

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
SPASOJEVIC BRKIC ET AL.: "Ergonomic design of crane cabin interior: The path to improved safety", SAFETY SCIENCE, vol. 73, 2015, pages 43 - 51
VELJKOVIC ET AL.: "Crane cabins' safety and ergonomics characteristics evaluation based on data collected in Sweden port", JOURNAL OF APPLIED ENGINEERING SCIENCE, vol. 13, no. 4, 2015, pages 299 - 306
ZUNJIC ET AL.: "Anthropometric assessment of crane cabins and recommendations for design: A case study", WORK, vol. 52, no. 1, 2015, pages 185 - 194

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111947960A (zh) * 2020-08-28 2020-11-17 南京林业大学 一种用于坐具体压分布测试研究的仿真装置
CN111947960B (zh) * 2020-08-28 2022-09-27 南京林业大学 一种用于坐具体压分布测试研究的仿真装置

Also Published As

Publication number Publication date
RS63434B1 (sr) 2022-08-31
RS20210887A1 (sr) 2021-08-31

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