EP2459475B1 - Roller attachment in a lift assembly - Google Patents

Abstract

The invention relates to a roller mount (100), particularly for elevator systems, having a roller (1) supported in at least two side plates (4a, 4b), wherein the side plates (4a, 4b) can be connected to a support structure (11), and wherein the side plates (4a, 4b) can be connected to a U-profile (5) by means of bolted connections (6a-6h) and at least one transverse bolt (7), so that a contact surface (18) on the bottom side of the U of the U-profile (5) supports the support structure (11).

Description

The present invention relates to an elevator installation, in which at least one elevator car and at least one counterweight are moved in opposite directions in an elevator shaft, wherein the at least one elevator car and the at least one counterweight run along guide rails and are carried by one or more suspension means. The present invention relates in particular to the attachment of rollers, for example of deflection rollers or support rollers, through which the suspension element is guided and, for example, carries the counterweight or the elevator car or both.

Typically, such roller fasteners are realized by one or more frame parts of a support frame in which the counterweight or the elevator car is arranged, are taken with connecting plates and side plates by means of screw or rivet.

For example, from the European Patent EP-B1-0 940 363 a roller attachment known in which two vertically arranged side plates grasp a frame part and are connected to a horizontally arranged connection plate. In the connecting plate a rotatable hitch in the form of a (rotatable about its longitudinal axis) longitudinal bolt is attached. At the opposite, distal end of the longitudinal bolt, a further connecting plate is fixed, which holds the axis of the roller with two other side plates.

An alternative embodiment of a roller mounting is off US 2008/289908 A1 known.

The disadvantage of this role mounting that on the one hand consists of many items. This makes them relatively expensive and makes installation difficult. On the other hand, this role attachment provides no additional security precautions. Your safety depends on the screw or rivet connections or the thread on the ends of the longitudinal bolt.

The object of the present invention is to propose a roller mounting, which is characterized by technical simplicity, low maintenance and cost efficiency. In addition, it should at least optionally have technical safety precautions that represent an increased (reserve) safety level over the safety of the claimed parts in normal operation and their connections.

The solution to the problem consists initially in the arrangement of only two side plates, each of which holds both the axis for the role, as well as a U-profile. The latter is done with screw or riveted joints. In addition, according to the invention a transverse bolt is provided which connects both side plates and the U-profile with each other.

According to a first embodiment variant according to the invention, one side plate each having, for example, four screw connections can each be connected to one flank of the U-profile. The holes in the side plates and the flanks of the U-profile, through which the screw connections are guided, are arranged correspondingly and insignificantly larger than the outer diameter of the respective screw connection. Thus, it is achieved that the screw connections between the side plates and the U-profile in the mounted and loaded state are subject to the greater part of a shear stress.

For the above screw preferably dowel screws, for example, according to DIN 7968, are used with little hole play or rivets.

The side plates thus hold by means of the U-profile a frame part, for example a yoke, in such a way that the Ground of the Us wearing the yoke. The side plates are not only bolted or riveted to the flanks of the U-profile, but preferably also with two flanks of the yoke. According to a preferred embodiment variant, the latter screw or rivet connections between side plates and yoke flanks are adjustable in the vertical or along the longitudinal axis of the roller attachment, so that an exclusive power transmission between U-profile and yoke is ensured or can be avoided, for example, four screw or Rivet fasten the side plates to the yoke (and thus take the entire load as a shearing force) without the bottom of the Us having contact with a support plate of the yoke. The vertical adjustability of these four screw or rivet connections between the side plate and the respective yoke flank can be realized by, for example, the holes in the side plates or in the yoke flanks or both are designed as slots with a vertical orientation. It is also conceivable to guide the screw heads or nuts in vertically arranged scenes.

Furthermore, according to the invention, the shear stress in the screw connections is taken over by a shear stress in the transverse bolt. For this purpose, the cross bolt can be used in corresponding holes, which is also insignificantly larger or equal to or even smaller than the outer diameter of the cross bolt so that a game, transition or interference fit can be reached at will and technical requirements.

For a lateral fixation of the transverse pin is further provided according to the invention, at least at one end of the transverse pin a transverse groove into which a locking plate or a locking plate can be used. It can also be provided symmetrically at the opposite end of the transverse pin, a second, identical transverse groove, so that a second, identical locking plate is used, in principle However, sufficient to avoid axial displacement of the transverse pin along its longitudinal axis a locking plate. The locking plate or the locking plates are preferably mitgefasst with two of the four screw connections for a side plate and a flank of the U-profile.

For lateral fixation of the transverse pin may be provided instead of a transverse groove and one or two locking plates which are insertable into the transverse groove, a bore into which a split pin is inserted. But discs, held by a nut on an external thread or a screw in an internal thread are conceivable. Furthermore, optionally, the transverse pin has at one end a distally arranged collar or a distally arranged shoulder which prevents the axial displacements of the transverse pin along its longitudinal axis by the resistance against the outer surface of the side plate.

A further embodiment variant according to the invention provides that in normal operation only the transverse bolt alone absorbs the carrying function and shearing stress. For example, four screw connections per flank of the U-profile, so the total of eight screwed, are used in slots with vertically oriented longitudinal direction, so that they take only in an emergency shearing the cross bolt as an additional safety function wearing.

A further variant of the invention provides that the screw connections - preferably also realized with dowel screws - perceive the carrying function and thus the shear stress and the cross bolt not. It thus fulfills in this embodiment variant only a safety function for an emergency, that the screw or rivet connections between side plates and flanks of the U-profile should be sheared off. For this purpose, the cross bolt in a slot in the side plate or in a slot in the Flank of the U-profile with game inserted. As a result, carry the screw or rivet alone and the cross bolt exercises only an additional safety-carrying function.

In addition, the transverse bolt can optionally take over a centering function during assembly in all design variants. By the first-time insertion of the cross bolt, the U-profile and the side plates are aligned with each other so that the holes for the screw or rivet connections correspond and the screws or rivets can be used easily.

A further embodiment variant of a roller fastening according to the invention provides that the transverse pin forms two proximal shoulders, that is to say that the transverse pin has an outer diameter in the center and a smaller one at the ends. The U-profile preferably has receiving bores which are open at the bottom so that the transverse bolt can be inserted and the shoulders abut the inner surfaces of the flanks of the U-profile. The side plates are mounted with their holes as previously disclosed on the smaller outer diameter of the transverse pin. In particular, this embodiment variant, but also the previously disclosed, is suitable for use of, for example, only four instead of, for example, eight screw or rivet connections that make the connection between the side plates and the flanks of the U-profile. This is because a tightening torque of the screw connections can not bend the U-profile because of the seat of the inner surfaces of the flanks of the U-profile on the shoulders of the transverse pin.

An identical bracing of the flanks of the U-profile can also be achieved by the transverse bolt has a continuous outer diameter and is insertable into a spacer sleeve. In this case, at least one of the fuses listed in paragraph [0012] against axial displacement of the Crossbolt required along its longitudinal axis.

In the embodiment variants in which the screw or rivet connections for the connection of the side plates and the flanks of the U-profile in normal operation perform a carrying function, the abutting surfaces in the assembled state of side plates and flanks of the U-profile with an area with a raised Friction coefficient or even a complementary toothing be equipped. This ensures that the shear stress in the screw or rivet joints decreases.

Further or advantageous embodiments of an inventive roller attachment form the subject of the dependent claims.

The invention will be explained symbolically and by way of example with reference to figures. The figures are described coherently and comprehensively. The same reference symbols denote the same components, reference symbols with different indices indicate functionally identical or similar components.

• Fig. 1 eine schematische Darstellung einer erfindungsgemässen Rollenbefestigung;
• Fig. 2 eine schematische Detaildarstellung der erfindungsgemässen Rollenbefestigung aus Fig. 1 in Form einer Schnittdarstellung entlang der Schnittachse A-A aus Fig. 1;
• Fig. 3 eine schematische Detaildarstellung einer erfindungsgemässen Ausgestaltungsvariante eines Jochs mit Langlöchern;
• Fig. 4a eine schematische Detaildarstellung einer erfindungsgemässen Ausgestaltungsvariante eines U-Profils mit Langlöchern für die Schraubverbindungen;
• Fig. 4b eine schematische Detaildarstellung der erfindungsgemässen Ausgestaltungsvariante des U-Profils aus Fig. 4a in Seitenansicht;
• Fig. 4c eine schematische Detaildarstellung einer weiteren erfindungsgemässen Ausgestaltungsvariante eines U-Profils mit einem Langloch für den Querbolzen;
• Fig. 4d eine schematische Detaildarstellung der erfindungsgemässen Ausgestaltungsvariante des U-Profils aus Fig. 4c in Seitenansicht;
• Fig. 5 eine schematische Detaildarstellung einer weiteren Ausgestaltungsvariante einer erfindungsgemässen Rollenbefestigung mit einem Querbolzen mit einem distalen Kragen;
• Fig. 6 eine schematische Detaildarstellung einer weiteren Ausgestaltungsvariante einer erfindungsgemässen Rollenbefestigung mit einem Querbolzen mit zwei proximalen Schultern;
• Fig. 7a eine schematische Detaildarstellung einer erfindungsgemässen Ausgestaltungsvariante eines U-Profils mit nach unten offenen Aufnahmebohrungen und
• Fig. 7b eine schematische Detaildarstellung der erfindungsgemässen Ausgestaltungsvariante des U-Profils aus Fig. 7a in Seitenansicht.

It show here

• Fig. 1 a schematic representation of an inventive roller attachment;
• Fig. 2 a schematic detail of the inventive roller attachment Fig. 1 in the form of a sectional view along the section axis AA Fig. 1 ;
• Fig. 3 a schematic detail of an inventive embodiment variant of a yoke with slots;
• Fig. 4a a schematic detail of an inventive embodiment variant of a U-profile with slots for the screw;
• Fig. 4b a schematic detail of the inventive variant of the U-profile Fig. 4a in side view;
• Fig. 4c a schematic detail of another inventive embodiment variant of a U-profile with a slot for the cross bolt;
• Fig. 4d a schematic detail of the inventive variant of the U-profile Fig. 4c in side view;
• Fig. 5 a schematic detail of another embodiment variant of an inventive roller attachment with a transverse pin with a distal collar;
• Fig. 6 a schematic detail of a further embodiment variant of an inventive roller attachment with a cross pin with two proximal shoulders;
• Fig. 7a a schematic detail of an inventive embodiment variant of a U-profile with downwardly open receiving holes and
• Fig. 7b a schematic detail of the inventive variant of the U-profile Fig. 7a in side view.

Fig. 1 shows a roll attachment 100 according to the invention in a side view. A roller 1 is, clothed in a housing 2, mounted with a bearing pin 3 in two side plates 4a and 4b, of which in the illustrated side view, only the front side plate 4a is visible. These two side plates 4a and 4b hold a (hidden) U-profile 5 by means of screw 6a-6h and by means of a transverse pin 7. Of the screw 6a-6h are in the illustrated side view of the roller mounting 100 again only the front screw 6a-6d visible , which connect the side plate 4a with the (hidden) U-profile 5. The transverse pin 7 is fixed with a locking plate 8 against axial displacements. The locking plate 8 in turn is of held the screws 6a and 6b.

Tensile forces acting in normal operation of the roller mounting 100 along a longitudinal axis 9 of the roller mounting 100, the U-profile 5 can be present on a support plate 10 which is fixed or welded to the underside of a yoke 11. The yoke 11 is part of a support frame - or attachment for a support frame, not shown - for the counterweight or the elevator car. The side plates 4a and 4b are fastened with additional screw connections 13a-13d to jöchflanken 12a and 12b of the yoke 11, of which in the illustrated side view again only the screw 13a and 13b for the connection of the front side plate 4a with the front yoke flank 12a are visible ,

The Fig. 2 schematically shows a sectional view of the roller attachment 100 from Fig. 1 along the section axis AA shown there. It can be seen that the U-profile has 5 flanks 17b and 17a, with which it is gripped in the side plates 4b and 4a, with screw 6f, 6b, 6h and 6d, which are inserted into corresponding holes 15f, 15b, 15h and 15d are. The screws of the screw 6, so not only the screw 6f, 6b, 6h and 6d shown in this sectional view, but also the screw 6a, 6c, 6e and 6g, which are inserted in the cut-away part of the roller mounting 100, preferably comprise dowel screws have over the width of the flank 17b of the U-profile 5 and the width of the side plate 4b and over the width of the flank 17a of the U-profile 5 and the width of the side plate 4a no thread, but a pass diameter, at will and technical requirements is used in the holes 15 in game, transition, or interference fit. Equally, with an identical fit, the cross pin 7 is inserted in corresponding bores 19a and 19b. As a result, in this basic embodiment variant of an inventive Roller attachment 100 ensures that tensile forces along the longitudinal axis 9 of the roller attachment 100 via the side plates 4b and 4a are transmitted equally to the U-profile 5 both via the shear strength of all eight screw connections 6a-6h and via the shear strength of the transverse pin 7. A support surface 18, or the underside of the U of the U-profile 5, transmits the tensile force again to the support plate 10 of the yoke 11, of which only the yoke flank 12a and a corresponding yoke flank 12b are shown in this detailed detail.

The transverse pin 7 has a transverse groove 14, into which the arresting plate 8 is inserted, so that axial displacements of the transverse pin 7 along a longitudinal axis 16 of the transverse pin 7 are prevented.

In Fig. 3 an embodiment variant according to the invention of a yoke 11a is shown, which, used in a as before in the FIGS. 1 and 2 shown roller mounting 100, a further embodiment variant of an inventive roller attachment 100a results. This embodiment variant of a roller attachment 100a according to the invention is characterized in that, due to elongated holes 20a and 20b in the yoke flank 12a shown in FIG Fig. 1 shown screw 13a and 13b are used - an adjustment exists. In order to prevent the screw connections 13a and 13b from assuming an undesired carrying function and shearing stress before the support surface 18 makes contact with the support surface 10 of the yoke 11 (see FIG Fig. 2 ), after proper contact of said parts, the screw 13a and 13b within the slots 20a and 20b still slidable.

The Fig. 4a shows a further embodiment variant of a U-profile 5a and in Fig. 4b its side view. This U-profile 5a results, used in a roller mounting 100 the FIGS. 1 or 2 or in a roller attachment 100a from the Fig. 3 , A further embodiment variant of an inventive roller mounting 100b, which is characterized in that the screw 6 exercise no carrying function and thus are not subject to shear stress, but only the cross bolt 7, which is used as previously in the holes 19a and 19b. For this purpose, elongated holes 21a-21h are provided for the screw connections 6 in flanks 17c and 17d of the U-profile 5a. In this embodiment variant of another inventive roller mounting 100b carries the cross bolt 7 and the screw 6 have, in addition to a lateral holding function in the horizontal only a safety function in the vertical.

The Figures 4c and 4d show a further embodiment variant of a U-profile 5b, which in turn in the roll attachment 100 according to Fig. 1 respectively. Fig. 2 or in the roller attachment 100a according to Fig. 3 can be used and thus results in a further embodiment variant of an inventive roller attachment 100c. This is characterized by the fact that the screw 6 exercise the carrying function and thus absorb the shear stress, and the cross pin 7 is not. In this embodiment variant, a slot 22a and 22b for receiving the transverse pin 7 is provided in both flanks 17e and 17f of the U-profile 5b. This ensures that the cross bolt 7 is saddled up as additional security element of the holding function of the screw 6 in the holes 15a-15h.

The Fig. 5 shows schematically and in a partially sectioned detail representation of a further embodiment variant of an inventive roller attachment 100d, in which a transverse pin 7a has a distal shoulder or a collar 23 for securing against axial displacements along a longitudinal axis 16a of the transverse pin 7a. At the opposite end of the transverse pin 7a with a disc 24 and a nut 25 secured. Instead of a nut 25 on an external thread is alternatively a screw in an internal thread as a backup conceivable or a bore through which a split pin is used.

The cross pin has an outer diameter Ø, which is used in any type of fit in holes 19c and 19d. The bores 19c and 19d are arranged concentrically and of identical diameter both in side plates 4c and 4d, as well as in flanks 17g and 17h of a U-profile 5c.

In the Fig. 6 a further embodiment variant of a roller attachment 100e according to the invention is shown schematically, which has a transverse pin 7b with two opposing proximal shoulders 26a and 26b, ie, the transverse pin 7b has an outer diameter Øa at the center and an identical but smaller outer diameter Øb and Øc at its respective ends which are inserted in the assembled state in holes 19e and 19f. The bores 19e and 19f extend concentrically both through side plates 4e and 4f, as well as by flanks 17i and 17j of a U-profile 5d. In particular, this embodiment variant of an inventive roller mounting 100e is suitable for using instead of eight screw 6a-6h, only four screw 6i-6l, of which in the illustrated sectional view of this Fig. 6 only the rear screw 6k and 61 are visible and their broken sectional planes are identical. The broken section plane, which shows the seat of the transverse pin 7b in the holes 19e and 19f, is in front of the cutting plane of the screw 6k and 61.

Unlike the cross pin 7 from the FIGS. 1 or 2 or the transverse pin 7a from the Fig. 5 having a continuous outer diameter, the proximal shoulders 26a and 26b brace the U-profile 5d so that it does not resist the tightening torque of the screw connections 6i-6l can bend together.

The U-profile 5d preferably has a downwardly open receiving bore 27a in the flank 17i and a corresponding second downwardly open receiving bore 27b in the flank 17j, which in this sectional view of FIG Fig. 6 along two cutting planes are only indicated, but in the following FIGS. 7a and 7b are better visible. By means of these downwardly open receiving bores 27a and 27b, it is ensured that, in particular, the roller fastening 100e with the transverse bolt 7b out of the Fig. 6 , but optionally also the roller mounting 100 with the cross bolt 7 from the Fig. 1 or from the Fig. 2 and the roller attachment 100d with the cross bolt 7a from the Fig. 5 easier to assemble. A further advantage is that such a transverse bolt 7b with two proximal shoulders 26a and 26b does not require any securing - in the form of a locking plate, a nut, a screw or a splint - against axial displacements along a longitudinal axis 16b of the transverse pin 7b.

As an alternative to the proximal shoulders 26a and 26b of the transverse pin 7b, the same bracing against the inner sides of the flanks 17i and 17j of the U-profile 5d can also be achieved with a spacer sleeve which has the outer diameter Øa over a distance A and an inner diameter which is one Introducing a transverse pin allowed, the continuous diameter over a distance A 'has the outer diameter Øb = Øc. This alternative embodiment variant of a transverse bolt in turn requires one or two of the previously mentioned fuses against axial displacements along the longitudinal axis 16b.

As shown, the screw connections 6k and 61 and also the screw connections 6i and 6j, not shown, preferably each have identical and continuous outer diameters Ød and Øe, which extend over the distance A '. These outer diameters Ød and Øe are in holes 15i, 15k, 15m and 15o used in any kind of fit.

The FIGS. 7a and 7b show a further embodiment variant of a U-profile 5e, which has for the screw 6 slots 21i-21p in flanks 17k and 171 of the U-profile 5e and for the cross bolt 7, 7a or 7b or the transverse bolt with spacer sleeve the bottom open receiving bore 27a in the flank 17k and the corresponding, bottom open receiving bore 27b in the flank 171 has. That in these FIGS. 7a and 7b shown U-profile 5e optionally has slots 21i-21p (21m and 21o are not visible) for the preferably four screw 6i-6l, so that the holding function is exercised in this roller mount 100e of the cross bolt 7b or of the cross pin with spacer sleeve. The screw 6i-6l exercise in this case, together with a lateral fixation of the roller attachment 100e no holding function in the vertical, but only a safety function.

The disclosed embodiments of a roller mounting according to the invention can be combined with one another, such that a cumulative holding function of screw connections and transverse bolts, sole holding function of the screw connections or sole holding function of the transverse bolt can be implemented at will and with the respective technical requirements with the shown design variants of U-profiles and connection types.

Furthermore, the described three types of holding functions can be achieved not only by slots or even just larger-sized holes in the flanks of the respective U-profile, but also by slots or larger-sized holes in the side plates.

Claims (13)

1. Roller fastening (100, 100a-100d) for fastening a roller (1) to a carrier structure (11), wherein the roller (1) is mounted on at least two side plates (4a-4f) and the side plates (4a-4f) are connected to the carrier structure (11), characterized in that a U-profile (5, 5a-5e) and at least one transverse bolt (7, 7a, 7b) are present, wherein the U-profile (5, 5a-5e) connects the side plates (4a-4f) and the transverse bolt (7, 7a, 7b) traverses side plates (4a-4f) and U-profile (5, 5a-5e) and a bearing surface (18) on an underside of the U of the U-profile (5, 5a-5e) bears the carrier structure (11, 11a).
2. Roller fastening (100, 100a-100d) according to claim 1, characterized in that the U-profile (5, 5a-5e) has at least two flanks (17a-171) which can in each case be connected to the side plates (4a-4f) by means of screw connections (6a-6h) through corresponding bores (15a-15h) through the side plates (4a-4f) and through the flanks (17a-171).
3. Roller fastening (100, 100a-100d) according to either of the preceding claims, characterized in that the carrier structure comprises a yoke (11, 11a) with a support plate (10) for resting on the bearing surface (18) and in that the yoke (11, 11a) forms at least two yoke flanks (12a, 12b) which can be connected to the side plates (4a-4f), and wherein this connection (13a-13d) can be adjusted along a longitudinal axis (9) of the roller fastening (100, 100a-100d).
4. Roller fastening (100, 100a-100d) according to Claim 2, characterized in that bores (15a-15i, 15k, 15m, 15o) correspond with bores (19a-19f) for receiving the transverse bolt (7, 7a, 7b) which lead through the side plates (4a-4f) and through the flanks (17a-171) of the U-profile (5, 5a-5e) in such a way that the transverse bolt (7, 7a, 7b) absorbs some of the shear load in the screw connections (6a-6l).
5. Roller fastening (100, 100a-100d) according to one of the preceding claims, characterized in that the transverse bolt (7, 7a, 7b) has a safeguard against axial displacements along its longitudinal axis (16, 16a, 16b).
6. Roller fastening (100, 100a-100d) according to one of the preceding claims, characterized in that the transverse bolt (7a) has a collar (23).
7. Roller fastening (100, 100a-100d) according to one of the preceding claims, characterized in that slots (21a-211, 21n, 21p) for the screw connections (6a-6l) are arranged in the flanks (17a-171) of the U-profile (5, 5a-5e) such that the transverse bolt (7, 7a, 7b) alone absorbs the load of the roller fastening (100, 100a-100d).
8. Roller fastening (100, 100a-100d) according to one of the preceding Claims 1-6, characterized in that a slot (19a-19f) for the transverse bolt (7, 7a, 7b) is arranged in each of the flanks (17a-171) of the U-profile (5, 5a-5e) such that the screw connections (6a-6l) alone absorb the load of the roller fastening (100, 100a-100d).
9. Roller fastening (100, 100a-100d) according to one of the preceding claims, characterized in that the transverse bolt (7b) has two proximal shoulders (26a, 26b) and in that the bores (19a-19f) in the flanks (17i-17j) of the U-profile (5d) are receiving bores (27a-27b) which are open for receiving the transverse bolt (7b).
10. Roller fastening (100, 100a-100d) according to one of the preceding Claims 1-8, characterized in that the transverse bolt (7, 7a) can be inserted into a spacer sleeve which, in the mounted state of the roller fastening (100, 100a-100d), bears with its end faces against the inner surfaces of the flanks (17g-17j).
11. Roller fastening (100, 100a-100d) according to either of the preceding Claims 9 and 10, characterized in that the side plates (4a-4f) and the flanks (17g-17j) are connected jointly with four screw connections (6i-6l).
12. Roller fastening (100, 100a-100d) according to one of the preceding Claims 1-6 or 8-11, characterized in that a complementary toothing is arranged on the inner surface of the side plates (4a-4f) and on the flanks (17a-171) of the U-profile (5, 5a-5e).
13. Lift installation having at least one roller fastening (100, 100a-100d) according to one of the preceding Claims 1-12.

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