WO2004063594A1 - Chainon de longueur variable, rigide ou flexible - Google Patents

Chainon de longueur variable, rigide ou flexible Download PDF

Info

Publication number
WO2004063594A1
WO2004063594A1 PCT/ES2004/000004 ES2004000004W WO2004063594A1 WO 2004063594 A1 WO2004063594 A1 WO 2004063594A1 ES 2004000004 W ES2004000004 W ES 2004000004W WO 2004063594 A1 WO2004063594 A1 WO 2004063594A1
Authority
WO
WIPO (PCT)
Prior art keywords
chain
link
links
length
variable length
Prior art date
Application number
PCT/ES2004/000004
Other languages
English (en)
Spanish (es)
Inventor
José Ramón GARCÍA PÉREZ
Original Assignee
Garcia Perez Jose Ramon
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
Priority claimed from ES200300140A external-priority patent/ES2247871B1/es
Application filed by Garcia Perez Jose Ramon filed Critical Garcia Perez Jose Ramon
Publication of WO2004063594A1 publication Critical patent/WO2004063594A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/18—Chains having special overall characteristics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
    • B65G23/24—Gearing between driving motor and belt- or chain-engaging elements
    • B65G23/30—Variable-speed gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains

Definitions

  • Variable-length, rigid or flexible chain link
  • This invention has application to any industrial sector where transmission of efforts or movements is needed and where it is decided to do so through a flexible element, such as a chain. It refers to the use of machinery where chains are used as either linear transmission elements or to transmit effort and movement between two or more axes at different rotational speeds.
  • the chain in general is a flexible set made up of rigid elements that are the links.
  • the chains are widely used as transmission elements, achieving through changes in the number of teeth of the wheels between which it moves, different speeds of rotation of the axes of the mentioned wheels, although the speed lines! of the chain is constant.
  • the links can be made up of several pieces with different shapes so that the chain complies with its object and adapts to the route it must take, which is usually continuous, of constant speed and on different planes.
  • the links for the chains have various shapes and consist of one or more pieces.
  • the links are standardized and rigid, generally consisting of pieces of sheet metal suitably cut with holes at the ends to place the rollers and axes of rotation between one link and the next.
  • Generally rigid links can be flexible if flexible materials such as rubber or certain plastic materials are used for their construction. These links are limited in resistance by the stresses that the materials of which they are made can withstand, which are generally not suitable for transmitting stresses, above all in industrial applications. Disclosure of the invention
  • the object of this invention is a link of variable length, capable of transmitting effort and individually or as a whole of them forming a transmission element or chain;
  • this link may be able to serve as a transport element, so that all of them would form a transport chain.
  • Chains generally move at constant linear speed, in addition to being used to transmit movement between axes, sometimes they drag elements longitudinally, which move at the same linear speed as the chain, which due to the stiffness of the links is constant.
  • This patent deals with the case in which different Jineal speeds are needed at two or more points of the same chain or to produce a progressive variation of speed, that is, an acceleration in some part of the chain to transmit this movement, which can be accompanied effort where necessary.
  • Varying the linear speed of the chain can be achieved by modifying the length of the links on the fly; This involves varying the length of the links in the appropriate section, with the chain working, and maintaining the link as a force-transmitting element.
  • the system of this patent was created in which the link when moving refers to another element with respect to! which has relative speed (frame or support) and as it moves with respect to said element, its length varies through internal mechanisms of the link itself connected or not with the outside of the link.
  • the internal mechanisms of the link that allow it to lengthen and shorten must maintain links or unions of force between them, so that allow the link to transmit effort from the preceding link to the next link.
  • Chains are driven by one or more sprocket wheels generally connected to a motor.
  • the speed of the bolt or pin that connects the link to the next one varies, that is, that within the chain, the links and pins that join them have an acceleration (positive or negative) for a time, which allows to get more or less speed or line! than the one with the sprocket that drives the chain.
  • the lengthening or shortening of the links can be done in sections at will, so that they are lengthened or shortened all at once, in sections or on some occasions they are lengthened and on other occasions they are shortened. 5
  • the object of the present invention is the "link of variable length 11 that can either be rigid (lengthen and shorten only in the direction of the axis that joins its two ends) or flexible (lengthen, shorten and move in any direction of the space between its two ends).
  • variable length link can be applied to the speed variation of the axis or of the driven axes of a chain and can be achieve different rotational speeds of these driven shafts without varying their diameter, only by varying the speed of the chain.
  • the revolutions or rotational speed of the driven depend not only on its diameter with respect to the driver but also on the length of the links (and therefore their speed) when they mesh with the fixed chain or sprocket on that driven shaft.
  • a particularity of this new way of achieving different speeds on the driven shaft is that the distance between the driving and driven shaft changes as the length of the links and therefore of the chain varies, a circumstance that must be foreseen at the time of construction .
  • variable length link causes the rotation speed variation of! Driven shaft is continuous and progressive while the driving shaft connected to your motor remains with constant turning speed.
  • variable frequency drives applied to electric motors, but in the case of the present invention they are not necessary since the driving shaft remains at a constant speed of rotation. The same is done mechanically and has application in those places where electric current cannot be used due to the type of existing atmosphere or any other cause.
  • variable length link In addition to the advantages mentioned based on the kinematic properties that the "variable length link” can bring to chain drives, other advantages should be considered in other applications of variable length links in equal link chains or in isolated applications of this type. link. Industrial application mode
  • this link consists, for example, of a rack meshed on a toothed wheel (2), which if fixed does not move the rack and therefore the link remains with a constant length. If the wheel (2) rotates, it will move the rack and change the length of the link.
  • the toothed wheel (2) is joined by means of an axis to the crown (3) that meshes with the auger (4).
  • the non-reversibility of the movement between the crown and the worm is used to produce the blocking of the wheel (2), since the crown (3) only rotates if the movement comes from the worm, but if the effort goes from the rack to the wheel ( 2) and from this to the crown (3), the crown cannot rotate! endless, so the movement is blocked.
  • the auger (4) is jointly connected through an axis to the sprocket (5) which, if it is geared with a rack (6) fixed to the machine frame, due to the movement of the chain will rotate making the auger rotate, this to the crown, this to the sprocket (2) and the movement reaches the rack, which varies the length of the link between the axes of connection to the adjacent links. If the toothed wheel (5) with any rack is not engaged, the whole assembly will move with the movement of the chain but without changing the length of the link.
  • the rack (6) must be fixed to a frame that maintains relative movement with the chain when it moves; It will be placed in the same direction of chain movement and in such a position that it can engage the sprocket (5) when it passes where this rack is located.
  • the rack (6) located as indicated in the previous paragraph can mesh with the wheel (5) at two diametrically opposite points, as shown in figure 2, with which it is possible to go to one side or the other, that is, Take the link rack to increase or decrease its length.
  • the rest of the set consists of a rigid frame to support the set with a connecting element for the adjacent link.
  • this link consists of:
  • the link drawn in fig. 3 is therefore a transmitting element of efforts and movements that in addition to being able to vary its length, it can vary its shape by being able to orient the eyebolts at the ends in different directions from the axis that unites them as shown in fig. 5.
  • the auger (10) is jointly connected through an axis to the toothed wheel (11) which, if it engages with a rack (12) fixed to the machine frame, due to the movement of the chain, will rotate making the auger rotate, this to the crown, this to the chain wheel (8) and the movement reaches the secondary chain that varies the length of the link between the axes of connection to the adjacent links.
  • the rack (12) must be fixed to a frame that maintains relative movement with the chain when it moves; It will be placed in the same direction of chain movement and in such a position that it can engage the sprocket (11) when it passes through where this rack is located.
  • the rack (12) located as indicated in the previous paragraph can mesh with the wheel (11) in two diametrically opposite points, as indicated in figure 4, which means that it goes to one side or the other, that is, it leads to The secondary chain of the link to increase or decrease its length.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

La présente invention concerne un chaînon de longueur variable, permettant de transmettre une force et de former, seul ou avec d'autres chaînons, un élément ou une chaîne de transmission. Ce chaînon peut également former, seul ou avec d'autres chaînons, un élément ou une chaîne de transport. Ce chaînon de longueur variable peut (en prenant comme référence un élément par rapport auquel il conserve une vitesse relative) modifier sa longueur et introduire des changement cinématiques, dynamiques et de position dans les organes ou mécanismes qui dépendent de lui. Ce chaînon peut être utilisé dans des dispositifs de transmission de force utilisant des chaînes, lorsqu'il est nécessaire de faire varier la vitesse linéaire en divers points de ladite chaîne ou de faire engrener la chaîne en des points séparés par une distance variable. Ces chaînons peuvent être de longueur fixe ou variable et peuvent se déplacer dans le sens de l'axe passant par les points d'articulation avec les autres chaînons de la chaîne ou les éléments adossés ou également se déplacer dans une autre direction quelconque dans l'espace.
PCT/ES2004/000004 2003-01-15 2004-01-08 Chainon de longueur variable, rigide ou flexible WO2004063594A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ES200300140A ES2247871B1 (es) 2003-01-15 2003-01-15 Cadena de eslabones de longitud variable.
ESP200300140 2003-01-15
ES200300806 2003-04-01
ESP200300806 2003-04-01

Publications (1)

Publication Number Publication Date
WO2004063594A1 true WO2004063594A1 (fr) 2004-07-29

Family

ID=32715042

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2004/000004 WO2004063594A1 (fr) 2003-01-15 2004-01-08 Chainon de longueur variable, rigide ou flexible

Country Status (1)

Country Link
WO (1) WO2004063594A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3292769A (en) * 1963-06-13 1966-12-20 Battelle Development Corp Varying speed chain mechanism
US3462002A (en) * 1966-07-06 1969-08-19 Battelle Development Corp Varying-pitch chain-like arrangement to drive loads at variable speed
US4053044A (en) * 1974-06-14 1977-10-11 Pierre Patin System for continuous entrainment at variable speed
US4066161A (en) * 1973-07-02 1978-01-03 Centre Stephanois De Recherches Chain with links of variable length
EP0015581A2 (fr) * 1979-03-12 1980-09-17 Axel De Broqueville Moyen de transport comprenant une pluralité d'éléments de transport individuel successifs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3292769A (en) * 1963-06-13 1966-12-20 Battelle Development Corp Varying speed chain mechanism
US3462002A (en) * 1966-07-06 1969-08-19 Battelle Development Corp Varying-pitch chain-like arrangement to drive loads at variable speed
US4066161A (en) * 1973-07-02 1978-01-03 Centre Stephanois De Recherches Chain with links of variable length
US4053044A (en) * 1974-06-14 1977-10-11 Pierre Patin System for continuous entrainment at variable speed
EP0015581A2 (fr) * 1979-03-12 1980-09-17 Axel De Broqueville Moyen de transport comprenant une pluralité d'éléments de transport individuel successifs

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