Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B7/00—Other common features of elevators
  • B66B7/02—Guideways; Guides
  • B66B7/022—Guideways; Guides with a special shape
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B7/00—Other common features of elevators
  • B66B7/02—Guideways; Guides

Definitions

• GUIDE FOR ELEVATORS, LIFTS AND THE LIKE, AND METHOD FOR MANUFACTURING SAID GUIDE
• the present invention relates to a guide for elevators and lifts, usable in civil, commercial or industrial environments for example, as well as to a method of manufacturing such a guide.
• guides for lifts consist of section members having a straight axis which are mounted in series in the slide channels of said lifts; these guides generally have a T-shaped cross section in which a base is present which is usually disposed close to and secured to the walls of the slide channel, and a central protrusion emerging from the base and jutting out in the slide channel.
• the guides of known type are made using different methodologies, contemplating important and accurate controls to verify and maintain high production accuracy (in terms of straightness or angular warping on the main axes of the object, for example); these strict manufacture requirements are directly connected with the sliding homogeneity of the lift that in turn results in regular running and without jerks for the lift's users.
• the central protrusion in turn has variable thickness (still considered in terms of its cross-section) between a proximal portion of smaller thickness that is generally directly connected to the central part of the base, and a distal portion of increased thickness.
• the sections of the guides for lifts of known type do not allow the mechanical features of the material of which they are made to be exploited at best; in other words, the conformation of the guides for lifts of known type generally involves an excess of weight (and therefore an excess of material used in making the guide itself) or non-optimal exploitation and distribution of the efforts internal to the guide itself .
• the guides for lifts of known type are secured to the walls of the slide channels by series of bolts and/or intermediate hooking elements requiring a rather complicated installation (and generally based on intensive use of nuts and bolts); this prolongs the construction time for the lift plant and increases the full cost.
• the present invention aims at devising a guide for lifts that is able to overcome said drawbacks.
• the present invention aims at devising a guide for lifts having greater structural efficiency, both in terms of better exploitation of its mechanical strength and in terms of reduced amount of material (and therefore reduced weight) required for conceiving ⁇ ⁇ tr-
• the present invention aims at devising a method of manufacturing these guides for lifts ensuring high repeatability, high production rates and sequences of simple operations that can be easily monitored/set.
• the present invention aims at devising an intermediate hooking element that can be set between the guide and the wall of the slide channel where said guide is installed, in a simple, quick and highly reliable manner.
• Fig. 1 is a diagrammatic view in section of the guide for lifts according to the invention
• Fig. 2 shows a perspective view of the guide of Fig. 1;
• FIG. 3 is a perspective view of an intermediate fastening element associable with the guide in Figs. 1 and 2 ;
• the guide for lifts is generally denoted with reference numeral 1 and comprises a main body 2 extending along a respective (generally straight) main axis 2a; this main body in cross section has a base portion 3 having a rest side 3a that can abut against a wall when guide 1 is installed and a locating side 3b opposite to the rest side 3a.
• two boundary edges 4 are present which are placed at mutually opposite side ends of the base portion 3 and it is also possible to see the presence I of a central protrusion 5 emerging from the locating side 3b; this central protrusion 5 has a proximal root 5a connected to the base portion 3 and a distal thickening 5b connected to the mentioned proximal root 5a .
• At least one mass-redistribution potion 6 is present.
• This mass is formed in the base portion 3 and is adapted to lighten the base portion 3; I in particular, this mass displacement action is carried out in an "intermediate part" of the base portion included between the central protrusion 5 and at least one boundary edge 4.
• the mass-redistribution portion 6 (that to the aims of the present invention may be intended to be both a portion in cross section where additional material is present and a portion characterised by lack of material relative to the usual cross-sections of the guides for lifts of known type) is also adapted to make the base portion 3 heavy in a localised end part thereof in the vicinity of at least one boundary edge 4.
• a hollow space at the recess 6a enables possible additional devices to be j housed on guide 1, such as magnetic position sensors for example (that in guides of known type must be positioned under the so-called "runway”); this enables better reading thereof and therefore increased sensitivity/accuracy, to the benefit of the work
• the guide according to the present invention conveniently has two mass-redistribution portions 6 positioned at mutually j opposite (and typically spaced apart the same distance) parts relative to the central protrusion 5.
• the mass-redistribution portions 6 comprise a lightening recess 6a formed in the locating side 3b and a localised thickening 6b in the vicinity of a boundary edge 4; practically, the mass eliminated in the intermediate part of the base portion is "recovered” in the parts that are more distal from the geometric centre of the cross section of guide 1; in this manner the presence of material in the most critical parts of the section is maximised, while at the same time the moments of inertia are maximised and the overall quantity of "solid space" required for defining the guide itself is optimised.
• connection portion 7 placed between the mass-redistribution portion 6 and the central protrusion 5; this connection portion 7 is positioned between a lightening recess 6a and the proximal root 5a and preferably has a cusp- shaped configuration and/or a configuration with a sharp-cornered point relative to the main axis 2a (note that this configuration can be a consequence of the forming process of the lightening recess 6a that is typically defined by pressing and/or rolling and/or drawing after a similar operation has been carried out to previously form the proximal root 5a) .
• the so-called "forming” method can also be carried out using other processes of known type, such as hot rolling.
• finishing of said semifinished product is carried out through a predetermined number of finishing stations (following the roughing-out stations) ; in this way, the finished semifinished product takes a more defined cross-section relative to the main axis 2a (and such as to show, in a visually more distinguishable manner, at least one base portion 3, two boundary edges 4 and a central protrusion 5) .
• the method according to the present invention further comprises a step of imposing a mass redistribution at least in. the base portion 3; this operating step is adapted to lighten the base portion 3 in an intermediate part thereof included between the central protrusion 5 and at least one boundary edge 4 and also adapted to make the base portion 3 heavy at a localised end part thereof in the vicinity of at least
• the steps of pre-forming the semifinished product, finishing it and imposing a mass redistribution can be carried out through ) profiling and/or drawing and/or planing and/or rolling and/or hot-rolling (depending on the current requirements) .
• guide 1 In order to ensure quick, accurate and easy installation of guide 1 according to the invention, it is conveniently possible to use an intermediate interconnecting element which can be mounted between a guide for lifts (in accordance with that which has been hitherto described and hereinafter claimed, but also of ) different type in case of need) and a wall.
• this intermediate interconnecting element substantially comprises a linking portion 10 to be connected to a wall and an j active portion 11 connected to the linking portion 10 and adapted to be activated on a guide for lifts.
• the intermediate interconnecting element (generally denoted at 100 in the accompanying ) drawings) further comprises resilient pressure means integrally formed in the linking portion 10 and/or the active portion 11; this resilient pressure means is adapted to keep the guide for lifts in place by reactions of the spring type and/or by direct
• the intermediate interconnecting element can be built in such a manner that the linking portion 10 and active portion 11 are made without a break through folding and/or profiling of a thread-like or strip-like
• this thread-like or strip-like element in turn can preferably consists of a metal material (that conveniently maintains the elastic behaviour) , so as to ensure the above mentioned necessary mechanical action involving direct pressure.
• element 100 may comprise at least one interfacing seat 12 integrally formed in the thread-like or strip-like element; shit interfacing seat 12 is adapted to house a
• dislodging tool such as a common screwdriver
• one or more blocking expansions 13 integrally formed in the thread-like or strip-like element can be conveniently
• the blocking expansions 13 are adapted to abut at least against one boundary edge 4 and/or against the lightening recess 6a and/or the localised thickening 6b ) of guide 1 so as to retain it both along the main axis 2a thereof and transversely of said axis 2a.
• interfacing seat 12 and blocking expansions 13 > preferably consist of localised curvatures without a break of the thread-like or strip-like element; in this manner the spring back features of element 100 are maintained and element 100 is given the correct form/functional character in a quick and efficient manner .
• At least one (and preferably two) portions for pivotal mounting 14 are present; these portions are integrally formed in the thread-like/strip-like element and are adapted to rotationally connect element 100 to a respective mounting pin.
• the (virtual) centre of rotation defined by the mentioned mounting pin can be positioned in such a manner that it is at a higher height than the lying plane of the rest side 3a of the base portion 3; in this way, being this centre of rotation in a "raised” position relative to guide 1, on occurrence of a load transverse in the plane .
• element 100 reacts in such a manner that it tends to come back to a balance position and so that the inherent stability of the whole system is increased which consists of the assembly made up of guide 1 + intermediate interconnecting element 100 + fastening plate (on which the mounting pin is formed) .
• element 100 can contemplate the presence of at least one, and preferably two elastic counter- portions 15; these portions 15 are integrally formed in the thread-like/strip-like element too and are adapted to exert a reaction against possible rotations 100 around the mounting pin.
• the invention achieves important advantages.
• the steps of defining the new and original 1 cross-section of the present guide for lifts can be conducted with great accuracy in forming, high manufacturing speed and maintenance of a constant high quality level of the different pieces under production.
• installation of the present guide for lifts it should be noted that the possibility of using the intermediate fastening element described above (and hereinafter claimed) enables quicker and easier laying to be obtained, which
• the new coupling between element 100, > guide 1 and fastening plate (informally referred to as "fishplate") not only enables the installation time to be reduced, but also allows the guide to be maintained in place in an easier manner, facilitating the installation and alignment procedure.
• this intermediate interconnecting element is not affected by the vibrational state and the thermal cycles that can occur during operation of the plant; but even, in case of a seismic event the guide+interconnecting element system enables the structural overloads to be absorbed, due to the elastic damping effect of the connecting element itself.
• the system is in any case devoid of I spontaneous or uncontrolled decoupling, because Only an intentional action by an operator enables the guide to be removed from the interconnecting element; in addition, due to the structure shown, a possible intervention by an operator always involves an increase I in the constraining reaction that, if the intervention stops or fails, would bring the interconnecting element back to the starting balance condition (and therefore a "hold" condition on the guide) .

Landscapes

• Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
• Forging (AREA)
• Cage And Drive Apparatuses For Elevators (AREA)
• Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
• Railway Tracks (AREA)
• Mechanical Treatment Of Semiconductor (AREA)

Priority Applications (7)

Applications Claiming Priority (2)

Publications (1)

Family

ID=44511207

Family Applications (1)

Country Status (10)

Families Citing this family (1)

Citations (4)

Family Cites Families (6)

• 2011
  • 2011-06-29 IT IT001190A patent/ITMI20111190A1/it unknown
• 2012
  • 2012-06-27 PL PL12745545T patent/PL2726393T3/pl unknown
  • 2012-06-27 ES ES12745545T patent/ES2738918T3/es active Active
  • 2012-06-27 CN CN201280031533.5A patent/CN103648955B/zh active Active
  • 2012-06-27 EP EP12745545.9A patent/EP2726393B1/en active Active
  • 2012-06-27 TR TR2019/10981T patent/TR201910981T4/tr unknown
  • 2012-06-27 WO PCT/IB2012/053241 patent/WO2013001460A1/en active Application Filing
  • 2012-06-27 RU RU2014102663/11A patent/RU2600554C2/ru active
  • 2012-06-27 RS RS20190972A patent/RS59062B1/sr unknown
• 2014
  • 2014-07-21 HK HK14107398.7A patent/HK1194046A1/zh unknown

Patent Citations (4)

Also Published As

Similar Documents

Legal Events