EP3466556A1 - Système de frottement pour extensions mobiles de bras d'aspiration - Google Patents

Système de frottement pour extensions mobiles de bras d'aspiration Download PDF

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Publication number
EP3466556A1
EP3466556A1 EP18198400.6A EP18198400A EP3466556A1 EP 3466556 A1 EP3466556 A1 EP 3466556A1 EP 18198400 A EP18198400 A EP 18198400A EP 3466556 A1 EP3466556 A1 EP 3466556A1
Authority
EP
European Patent Office
Prior art keywords
friction
abutment
suction arms
friction system
extensions
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Withdrawn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
EP18198400.6A
Other languages
German (de)
English (en)
Inventor
Lucio Bellieni
Paolo Piccioni
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.)
AIRBOX Srl
Original Assignee
AIRBOX Srl
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 AIRBOX Srl filed Critical AIRBOX Srl
Publication of EP3466556A1 publication Critical patent/EP3466556A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area

Definitions

  • the present invention relates to a friction system for rotatable extensions of suction arms.
  • the present invention relates to a friction system for rotatable extensions of suction arms, of the horizontal type which can be combined with localized collection devices, such as the suction arms, in the context of air intake systems.
  • the localized collection systems are air suction systems, for example of mobile suction arms with possible extensions subject to tilting, or to a horizontal rotation movement, during use. Examples are shown in Figures 1 and 2 , in which a horizontal boom extension has a free axis rotation system consisting of a lower rotating support, with or without thrust bearing, and of an upper guide referred to the air conveying section ( figure 1 ), namely to the upper part of the structural body not conveying the air ( figure 2 ).
  • the object of the present invention is to provide a friction system for the horizontal joint Bracket-Extention axis (110-210-310) of rotatable extensions of suction arms capable of adjusting the sliding friction of the rotation, both in the static and in the dynamic component, and to modulate the force to be used for rotation at will, thus having characteristics such as to exceed the limits of the friction systems for horizontal joints of rotatable extensions of known suction arms.
  • Figure 3 shows a first embodiment of the horizontal joint friction system 100 for the system Bracket-Extension of rotatable extensions of suction arms comprising a horizontal joint Bracket-Extension, comprise a first abutment 101, a flanged metal duct 107, abutment means 102, a first friction mean 103a and a second friction mean 103b, and third friction means 103c compressed between the first abutment 101 and the abutment means 102.
  • the horizontal joint friction system 100 also comprises a mousse gasket 105 made in rubber and able to counteract elastically to the third friction means 103c.
  • the abutment means 102 are a counter flange.
  • the friction means 103a, 103b, 103c are compressed between the first abutment 101 and the counter flange 102 by clamping means 104, comprising screws, flat washers and nuts.
  • the ventilating unit of the collection system that is a machine driven by an electric motor that allows the intake of air axially, putting in depression the whole upstream configuration (swivelling boom and suction arm), is in support and one of its conveyor flange also acts as an abutment means for the clamping means 104.
  • the tightening torque of the clamping means 104 can be modulated by the operator on the basis of the selectivity to be obtained with respect to possible Extension-Arm front joints .
  • the selectivity of each joint with respect to the others can be determined by the operator.
  • the mousse gasket 105 ensure the air tightness and elasticity of the clamping means 104.
  • the friction means 103a, 103b and 103c are a toroidal-shaped clutch made in a low friction factor technopolymer, or whenever needed in a conductive metal material.
  • Figure 4 shows a second embodiment of the Bracket-Extension horizontal joint friction system 200 for rotatable extensions of suction arms.
  • the first abutment 201 is a rotary disk keyed on the rotation axis 50 of the structure of the system 200 and integral with the axis 50.
  • the friction system 200 also comprises an abutment means 202, which also acts as a support, consisting of a support bracket.
  • first friction means 203a and the second friction means 203b are compressed between the first abutment 201 and the abutment means 202 by clamping means 204a and 204b.
  • the clamping means 204a are clamps and the clamping means 204b are screws, flat washers and nuts. Their tightening torque can be advantageously modulated by the operator on the basis of the selectivity to be obtained with respect to possible front joints.
  • the first and second friction means 203a, 203b comprise a pair of toroidal-shaped clutches made of technopolymer or of conductive metal material.
  • the system 200 comprises a mousse gasket 205 to ensure elasticity on the clamping means 204a, 204b. In fact, greater tightening will produce a stronger torque with a higher value, giving the operator a progressive selection of rotations.
  • the friction system 200 in the second embodiment, as shown in figure 4 is placed on the rotation axis 50, being able to control and brake the rotation.
  • Figures 6 and 7 show, in fact, how the operator can have a progressive selection of the rotations, respectively using the first or the second embodiment of the horizontal joint friction system Bracket-Extension registered according to the invention.
  • Figure 5 shows a third embodiment of the friction system 300 for rotatable extensions of suction arms comprising a horizontal joint Bracket-Extension, composed by first abutment means 301, first friction means 303a and second friction means 303b, a flanged metal duct 107, abutment means 302 and third friction means 303c compressed between the first abutment 301 and the abutment means 302.
  • the abutment means 302 is a conveyor flange 302 of the ventilation unit of the collection system.
  • the friction means 303a, 303b and 303c are compressed between the first abutment 301 and the conveying flange 302 by clamping means 304, comprising screws, flat washers and nuts.
  • the tightening torque of the clamping means 304 can be modulated by the operator on the basis of the selectivity to be obtained with respect to possible Extention-Arm front joints.
  • the system 300 also comprises a calibrated mousse gasket 305 to ensure both the aeraulic seal towards the outside and the elasticity of the clamping system since its purpose is to minimize the inertial effect due to the mass of the fan unit resting on the clamping system itself.
  • the friction means 303a, 303b and 303c are toroidal-shaped clutches made of a low friction factor technopolymer, or of a conductive metallic material.
  • the friction system 100, 200, 300 for horizontal joint of Bracket-Extension of rotatable extensions of suction arms according to the invention allows a continuous regulation of the friction resistance.
  • Another advantage of the friction system 100, 200, 300 for horizontal joint of Bracket-Extension of rotatable extensions of suction arms according to the invention is to be simple to manufacture.
  • Another advantage of the friction system 100, 200, 300 for horizontal joint of Bracket-Extension of rotatable extensions of suction arms according to the invention is to allow the adjustment of the force on the individual extensions.
  • the friction system 100, 200, 300 allows to know which horizontal joint will be released first after the rotation between the joint Bracket-Extension axis (shown in figures 3 , figure 4 and figure 5 as 110-210-310) and the joint Extension-Arm axis (shown in figures 3 , figure 4 and figure 5 as 111-211-311) during the use by an operator acting from the Hood. Therefore, the friction system according to the invention allows to establish a rotation priority of the individual horizontal joints Bracket-Extension axis (110-210-310) and Extension-Arm axis (111-211-311), so that the rotation progression of the single horizontal joint can be selectively determined.
  • the present invention provides a friction system for the horizontal joint Bracket-Extention axis (shown in figures 3 , figure 4 and figure 5 as 110, 210, 310) of rotatable extensions of suction arms capable of adjusting the sliding friction of the rotation, both in the static and in the dynamic component, and to modulate the force to be used for rotation at will.

Landscapes

  • Pivots And Pivotal Connections (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
EP18198400.6A 2017-10-03 2018-10-03 Système de frottement pour extensions mobiles de bras d'aspiration Withdrawn EP3466556A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102017000110492A IT201700110492A1 (it) 2017-10-03 2017-10-03 Sistema di frizionamento per prolunghe brandeggiabili di bracci aspiranti

Publications (1)

Publication Number Publication Date
EP3466556A1 true EP3466556A1 (fr) 2019-04-10

Family

ID=61148347

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18198400.6A Withdrawn EP3466556A1 (fr) 2017-10-03 2018-10-03 Système de frottement pour extensions mobiles de bras d'aspiration

Country Status (2)

Country Link
EP (1) EP3466556A1 (fr)
IT (1) IT201700110492A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2330926A1 (fr) * 1975-11-04 1977-06-03 Wessel Hans Elements d'etancheite
WO1985000764A1 (fr) * 1983-08-10 1985-02-28 Anesteco Hab Mecanisme pour installations d'extraction
DE4016436C1 (en) * 1990-04-11 1991-05-16 Kemper Gmbh, 4426 Vreden, De Duct for dust extractor - has rotary joint formed of two T=shaped fittings with locking teeth
WO1993004791A1 (fr) * 1991-09-11 1993-03-18 Fumex Ab Dispositif telescopique
US5336130A (en) * 1993-03-04 1994-08-09 Metal-Fab, Inc. Adjustable exhauster arm assembly
US20120086200A1 (en) * 2005-08-04 2012-04-12 Lars Hedlund Lockable friction joint

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2330926A1 (fr) * 1975-11-04 1977-06-03 Wessel Hans Elements d'etancheite
WO1985000764A1 (fr) * 1983-08-10 1985-02-28 Anesteco Hab Mecanisme pour installations d'extraction
DE4016436C1 (en) * 1990-04-11 1991-05-16 Kemper Gmbh, 4426 Vreden, De Duct for dust extractor - has rotary joint formed of two T=shaped fittings with locking teeth
WO1993004791A1 (fr) * 1991-09-11 1993-03-18 Fumex Ab Dispositif telescopique
US5336130A (en) * 1993-03-04 1994-08-09 Metal-Fab, Inc. Adjustable exhauster arm assembly
US20120086200A1 (en) * 2005-08-04 2012-04-12 Lars Hedlund Lockable friction joint

Also Published As

Publication number Publication date
IT201700110492A1 (it) 2019-04-03

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