DE102018217994A1 - Trailing roller hollow axle, trailing roller assembly set, escalator step comprising a trailing roller hollow axis and method for assembling a trailing roller using a trailing roller assembly set - Google Patents

Abstract

The invention relates to a towing roller hollow axle (1) for arranging a towing roller (2) on an escalator step (30), a first end (4) of the towing roller hollow axle (1) being designed to apply a towing roller (2) to the towing roller hollow axle (1) , and wherein the trailing roller hollow axle (1), starting from the first end (4), has an arrangement section (6), a connecting section (7) and a securing section (8). The arrangement section (6) is designed to arrange a trailing roller (2) on the trailing roller hollow axle (1), the connecting section (7) is designed to connect the trailing roller hollow axle (1) with an escalator step (30) to a corresponding axle receptacle (31). This escalator step (30) can be connected, and the securing section (8) is designed to provide a captive device for the trailing roller hollow axle (1) which is inserted into an axle receptacle (31) of an escalating step (30) (1), an escalator step with such a trailing roller hollow axle (1) and a passenger conveyor with a large number of such escalator steps. Finally, the invention relates to a method for mounting a trailing roller (2) on an escalator step (30) using a trailing roller mounting set.

Description

The invention relates to a trailing roller hollow axle for arranging a trailing roller on an escalator step. The invention further relates to a trailing roller assembly set for arranging a trailing roller on an escalator step comprising a trailing roller with an axle end receptacle and a trailing roller hollow axle. Furthermore, the invention relates to an escalator step with an axle receptacle into which a trailing roller hollow axle with a trailing roller arranged thereon is introduced, and to a passenger conveyor device with a large number of such escalator steps. Finally, the invention relates to a method for mounting a trailing roller on an escalator step using a trailing roller mounting set, which in particular comprises a trailing roller hollow axle.

Escalator steps in the sense of the present invention are tread elements used in escalators and in moving walks. The tread elements, which are also referred to as moving walkway pallets, therefore also fall under the concept of the escalator step.

Escalator steps usually have at least one drag roller on each of their sides, the escalator steps being guided by means of the drag rollers on appropriately designed rails of the escalator when the escalator is in operation. It is important that the towing rollers are positioned securely on the escalator step in order to ensure that an escalator operates correctly.

From the GB 1 373 795 is known to cast a steel axis of the trailing roller in the light metal body of the escalator step. Such an escalator step is, however, quite complex to manufacture.

From the WO 2015/010770 A1 it is also known to hold a roller axle for arranging a trailing roller on an escalator step in a torsion-proof manner in the step body and to keep the roller axis improved in the step body by using a resilient latching connection. To further improve the hold of the roller axis in the escalator step, an adhesive connection between the roller axis and the step body is also proposed in this document. This type of arrangement of a drag roller on an escalator step is also relatively complex and therefore expensive.

Furthermore, from the CN 107215761 A a solution is known in which a towing roller is arranged on an escalator step by means of a threaded bolt, the threaded bolt projecting through the corresponding axle receptacle of the escalator step. In this case, a sleeve is applied to this section of the threaded bolt which protrudes through the axle receptacle and which is intended to compress on the axle receptacle by rotating the threaded bolt and is thus intended to form a securing against loss.

Against this background, it is an object of the present invention to improve a secure arrangement of a towing roller on an escalator step and, in particular, to simplify and to implement an arrangement of a towing roller on an escalator step at low cost.

To achieve this object, a trailing roller hollow axle, a trailing roller assembly set, an escalator step, a passenger conveyor device and a method for mounting a trailing roller on an escalator step are proposed according to the independent claims. Further advantageous embodiments of the invention are described in the dependent claims and the description and are shown in the figures.

The proposed solution provides a trailing roller axle for arranging a trailing roller on an escalator step. The drag roller hollow axle includes a first end and a second end. The first end of the trailing roller hollow axle is designed to apply a trailing roller to the trailing roller hollow axle. Starting from the first end, the trailing roller hollow axle has an arrangement section, a connecting section and a securing section. The arrangement section is designed to arrange a towing roller on the towing roller hollow axis. The connecting section is designed so that the trailing roller hollow axle can be connected to an escalator step at a corresponding axle receptacle of this escalator step, and the securing section is designed to provide a captive device for the trailing roller hollow axle inserted into an axle receptacle of an escalator step. This means that the securing section of the trailing roller hollow axle is advantageously designed to be able to secure the trailing roller hollow axle against unwanted removal from the axle receptacle of an escalator step.

A particularly advantageous embodiment of the proposed trailing roller hollow axle provides that the securing section is formed at least as part of a snap mechanism, advantageously such that the securing section forms an undercut when the trailing roller hollow axle is inserted into an axle receptacle of an escalator step. The securing section advantageously has elevations which cover the outside diameter of the securing section at least over sections of the circumference of the Increase the securing section compared to the connecting section. The securing section is further advantageously designed to be elastically resilient, so that the securing section advantageously compresses when the trailing roller hollow axle is introduced into the axle receptacle and widens again after leaving the axle receptacle by completely inserting the connecting section of the trailing roller hollow axle into the axle receptacle. The securing section advantageously forms an undercut against the escalator step in the area of the axle mount. This property of the securing section, allowing itself to be compressed when it is introduced into the axle receptacle and then returning to the original position and thereby forming an undercut and thus securing against loss, is in particular understood to mean that the securing section is at least designed as part of a snap mechanism. Advantageously, the securing section has a run-in slope that facilitates insertion into an axle receptacle of an escalator step.

A further particularly advantageous embodiment of the proposed trailing roller hollow axle provides that the securing section is designed to interact with a screw element, which has an external thread and is introduced into the trailing roller hollow axle, such that the turning of the screwing element leads to an expansion of the trailing roller hollow axle behind the connecting section. Advantageously, this widening forms a captive device that prevents the trailing roller hollow axle from being able to separate from the escalator step. The widening of the securing section is advantageously carried out as a widening of the securing section, in particular in the manner of a cavity dowel. In particular, it is provided that the external thread of the screw element forms a corresponding counter thread in the interior of the trailing roller hollow axis. In this embodiment, the securing section is designed in particular as a deformation section.

The proposed solution is particularly advantageous because it simplifies the attachment of a drag roller to an escalator step and can therefore be implemented more cost-effectively. For example, the proposed solution requires fewer parts than previously known solutions, since in particular no separate part has to be provided to protect against loss. This function is advantageously integrated directly into the trailing hollow axle. The trailing roller hollow axle is further advantageously designed such that a bolt, in particular a screw element, can be introduced into the trailing roller hollow axle exclusively via the first end, that is to say in particular from the side on which the trailing roller is arranged on the trailing roller hollow axle. Advantageously, it is not possible to insert a bolt via the second end of the trailing roller hollow axle. This advantageously enables faultless assembly of the trailing roller hollow axle to be improved.

Advantageously, the arrangement section of the towing roller hollow axle is designed to interact with a bolt inserted into the towing roller hollow axle, in particular with a screw element inserted into the towing roller hollow axle, in such a way that the outer diameter of the arrangement section increases. If a towing roller is arranged on the arrangement section and then a bolt is inserted into the towing roller hollow axis, the arrangement section advantageously increases in such a way that a press fit, that is to say a firm connection, is formed between the arrangement section and the towing roller or the bearing of the towing roller.

The connecting section of the trailing roller hollow axle is advantageously designed to interact with a bolt introduced into the trailing roller hollow axle, in particular with a screw element inserted into the trailing roller hollow axle, in such a way that the outer diameter of the connecting section increases. If the towing roller hollow axle with its connecting section is introduced into an axle receptacle of an escalator step and a bolt is subsequently inserted into the towing roller hollow axle, the connecting section is advantageously enlarged in such a way that a press fit, i.e. a firm connection, is formed between the connecting section and the axle receptacle. As a result, the trailing roller hollow axle is advantageously connected to the axle receptacle in a rotationally secure manner. In particular, advantageously no additional gluing of the trailing roller hollow axle to the axle holder is required and also no use of a special tool, such as e.g. a torque wrench.

The trailing roller hollow axle can in particular be made of metal or at least partially made of metal. Preferably, however, the trailing roller hollow axle is at least partially made of a plastic material, in particular completely made of a plastic material. A plastic drag roller hollow axle is advantageously inexpensive to produce, so that this results in further cost advantages.

A further advantageous embodiment of the trailing roller hollow axle provides that the securing section comprises a step hook section towards the second end. As an alternative to this, it is provided in particular that a step hook section adjoins the securing section toward the second end of the trailing roller hollow axle.

In these configurations of the trailing roller hollow axle, the trailing roller hollow axle thus advantageously has, in particular, an arrangement section, a connecting section, a securing section and a step hook section, starting from the first end.

The step hook section is advantageously designed to also be penetrated by a bolt, in particular a screw element, inserted into the trailing roller hollow axis. The step hook section is advantageously part of a further safety function which, when the trailing roller hollow axle is arranged as intended in an escalator step during operation of a passenger conveyor device in conjunction with a securing element, in particular a securing rail, arranged above this step hook section on a carrier of the passenger conveyor device, lifting an escalator step out of the guide system of the escalator steps the passenger conveyor prevented. Such a lifting of an escalator step can occur without such a safety function, for example, in an escalator as a passenger conveyor device, when the step in the lower transition arch of the escalators prevents the step from being lowered in relation to the preceding step, for example by a pinched pram wheel. As a result, the step would lift and the drag roller could jump out of the drag roller guide. This would lead to a crash between the step and the comb plate, which is advantageously prevented by the interplay of the step hook section and the securing element.

According to a further advantageous embodiment of the invention, the trailing roller hollow axle has a spacing section arranged between the arrangement section and the connecting section. This spacing section is advantageously designed to ensure a distance between a towing roller arranged on the towing roller hollow axis and an escalator step when the towing roller hollow axis is introduced into a corresponding axle receptacle of this escalator step. The spacing section advantageously prevents a towing roller arranged on the towing roller hollow axis from being able to contact the escalator step directly. Furthermore, the spacing section advantageously prevents further insertion of the trailing roller hollow axle into an axle receptacle of an escalator step. The spacing section advantageously acts as a stop. Advantageously, the spacing section thus defines the arrangement position of the trailing roller hollow axis in a shaft mount of an escalator step in a defined manner. This advantageously further simplifies the attachment of a towing roller to an escalator step. In particular, it is provided that the trailing roller hollow axle in the spacing section has an outer diameter that is larger than that of the connecting section. The trailing roller hollow axle advantageously has a greater wall thickness in the spacing section, in particular compared to the connecting section, as a result of which the outer diameter, which is enlarged in particular in relation to the connecting section, is achieved in the spacing section of the trailing roller hollow axle.

The inner diameter of the trailing roller hollow axle can be unchanged in the spacing section, in particular with respect to the connecting section. This means that, in particular in the case of a configuration of the towing roller hollow axle, the connecting section and the spacing section of the towing roller hollow axle each have the same inner diameter.

In a further advantageous embodiment of the trailing roller hollow axle, however, it is provided that the trailing roller hollow axle has different inner diameters in the spacing section and in the connecting section. It is advantageously provided that the trailing roller hollow axle has a smaller inner diameter in the connecting section than in the spacing section. This advantageously results in a press-fit in the connecting section between the trailing-roll hollow axle and the axle receptacle being improved in the case of a trailing roller hollow axle inserted in an axle receptacle of an escalator step, because the trailing-roller hollow axle can be expanded better by inserting a bolt due to the reduced inside diameter in the connecting section.

Furthermore, a groove can be introduced on the outer diameter of the spacing section in such a way that a suitable trailing roller cover forms a labyrinth seal to a bearing of a trailing roller arranged on the arrangement section of the trailing roller hollow axis.

A further advantageous embodiment of the invention provides that the trailing roller hollow axis is conical or polygonal-pyramid-shaped in the connecting section. Advantageously, the trailing roller axis tapers from the first end of the trailing roller hollow axis to the second end of the trailing roller hollow axis. That is to say towards the securing section, the trailing roller hollow axis in the connecting section advantageously has a smaller outside diameter than towards the arrangement section. The conical shape or polygon pyramid The shape of the trailing roller axle in the connecting section advantageously facilitates the insertion of the trailing roller axle into an axle receptacle of an escalator step. The arrangement position of the trailing roller hollow axle in the axle receptacle is thus further advantageously defined by the connecting section. This advantageously further simplifies the arrangement of a towing roller on an escalator step. In particular, it is provided that the axis receptacle of the escalator step is designed to be complementary to the conical or polygonal pyramid-shaped connecting section.

According to a further advantageous embodiment of the invention, it is provided that the trailing roller hollow axle in a widening definition area of the securing section has a hollow axle wall which is configured differently from the remaining securing section. As a result of this deviating configuration of the hollow axle wall, the securing section is advantageously widened in the widening definition area when a screw element introduced into the trailing roller hollow axle is turned. The hollow axle wall of the trailing roller hollow axle advantageously has a smaller wall thickness in the widening definition area, at least compared to the hollow axle wall of the remaining securing section. Additionally or alternatively, it can be provided that the expansion definition area has openings, in particular incisions, preferably incisions in the longitudinal direction of the trailing roller hollow axis. It can further be provided that the trailing roller hollow axle in the widening definition area has a material that is softer than the wall of the hollow axle of the rest of the securing section, that is, a material that is easier to deform. The widening definition region advantageously defines the region of the securing section at which the towing roller hollow axis expands when the screw element inserted into the towing roller hollow axis is turned. The expansion definition area is advantageously the most flexible point of the trailing roller hollow axle in the securing section. Advantageously, the second end of the trailing roller hollow axle moves when the screwing element introduced into the trailing roller hollow axle on the external thread of the screwing element in the direction of the first end of the trailing roller hollow axle, so that the trailing roller hollow axle lies in the widening definition area, advantageously starting from the second end of the trailing roller hollow axle in front of the axle mounting of an escalator. compresses in the longitudinal direction of the trailing roller hollow axis and thereby spreads outwards, in particular radially outwards.

The trailing roller assembly set for the arrangement of a trailing roller on an escalator step, which is further proposed to achieve the above-mentioned object, comprises a trailing roller with an axle end receptacle and a trailing roller hollow axle proposed according to the invention, in particular according to one of the configurations described above or after a combination of these configurations. The trailing roller and the trailing roller hollow axle are matched to one another in such a way that the trailing roller with the axle end receptacle can be attached to the arrangement section at the first end of the trailing roller hollow axle, in particular can be attached in a form-fitting manner. Advantageously, the drag roller with the axle end receptacle is attached to the drag roller hollow axle, advantageously attached with a precise fit. In particular, it is provided that the drag roller is a roller bearing or a plain bearing. The outer ring of the drag roller, in particular the roller bearing, is advantageously made of metal, in particular steel. In particular, it is provided that the axle end receptacle and the corresponding arrangement section of the trailing roller hollow axle are of stepped construction. That is, starting from the first end of the trailing roller hollow axle, the arrangement section preferably initially has a smaller outside diameter and then a larger outside diameter. The arrangement section can in particular merge into the spacing section of the trailing roller hollow axle without any further change in the outside diameter. This step-shaped offset advantageously further simplifies the application of the towing roller to the towing roller hollow axis.

Advantageously, the drag roller assembly set further comprises a bolt, in particular a screw element. The bolt, the trailing roller and the trailing roller hollow axis are advantageously matched to one another such that the bolt can be introduced into the trailing roller hollow axis through the trailing roller attached to the trailing roller hollow axis.

In particular, it is provided that the bolt, the trailing roller and the trailing roller hollow axis are further matched to one another in such a way that the bolt introduced into the trailing roller hollow axis widens the arrangement section and thus advantageously realizes a press fit between the trailing roller hollow axis and the trailing roller in the arrangement section. Advantageously, the trailing roller can hereby be arranged in a torsion-proof manner on the trailing roller hollow axis, in particular without gluing between the trailing roller hollow axis and the bearing of the trailing roller being necessary. This is arranging one Drag roller on an escalator step advantageously further simplified.

A further advantageous embodiment of the invention provides that the bolt and the trailing roller hollow axle are further matched to one another in such a way that the bolt inserted into the trailing roller hollow axle widens the connecting section, advantageously in such a way that an interference fit between the trailing roller hollow axle and a corresponding axle receptacle of an escalator step in the connecting section is realized between the trailing roller hollow axle and the axle receptacle when the trailing roller hollow axle is introduced into the axle receptacle. Advantageously, the trailing roller hollow axle can hereby be arranged in a non-rotatable manner in the axle holder of an escalator step.

If the securing section of the trailing roller hollow axle is at least designed as part of a snap mechanism, the insertion of the bolt into the trailing roller hollow axle arranged in an axle receptacle of an escalator step advantageously also means that the securing section can no longer be compressed and thus the trailing roller hollow axle is held captively in the axle receptacle. To release the snap mechanism formed between the escalator step and the securing section of the trailing roller hollow axle, it is necessary to first remove the bolt from the trailing roller hollow axle again. Because only then can the trailing roller hollow axle be compressed again in the securing section and the snap mechanism can be released again.

Furthermore, it is particularly provided that the trailing roller assembly set comprises, as a bolt, a screw element with a threaded section having an external thread, in particular a screw. The screw element, the trailing roller and the trailing roller hollow axle are advantageously matched to one another in such a way that the screwing element can be introduced into the trailing roller hollow axle by the trailing roller mounted on the trailing roller axle, preferably in such a way that the external thread at least in the securing section, which is advantageously designed as a deformation section, engages in the hollow axle wall of the trailing roller hollow axle. A rotation of the screw element inserted into the trailing roller hollow axle advantageously leads to an expansion of the securing section of the trailing roller hollow axle. In particular, a rotation of the screw element introduced into the trailing roller axis leads to an axial relative movement of the second end and thus to an expansion of the securing section of the trailing roller axis. Advantageously, there is also an axial compressive force which presses the bearing of the towing roller against the spacing section of the towing roller hollow axis acting as a stop and thus axially fixes it. The external thread of the screw element advantageously forms an internal thread in the hollow axle wall of the hollow caster axle when screwing into the trailing roller hollow axle. If the screwing element is completely inserted into the trailing roller hollow axle, further turning of the screwing element advantageously leads to the securing section, starting from the second end of the trailing roller hollow axle, being brought onto the external thread of the screwing element in the direction of the first end of the trailing roller hollow axle. In this case, the trailing roller hollow axis in the securing section is advantageously compressed in the longitudinal direction of the trailing roller hollow axis and thereby advantageously spreads out in the securing section. This advantageously provides, without the need for an additional part, a captive device which reliably prevents the trailing roller hollow axle from being able to unintentionally come loose from the axle receptacle of an escalator step. This not only simplifies the arrangement of a drag roller on an escalator step, but also increases the operational safety of an escalator or moving walk when using such a drag roller mounting set or an escalator step equipped with such a drag roller mounting set.

According to a further advantageous embodiment, the trailing roller assembly set comprises an intermediate element, in particular a washer or a spring ring. The intermediate element, the screw element and the drag roller are advantageously matched to one another in such a way that the intermediate element can be applied to the screw element and is inserted between the drag roller and the screw element head when the screw element is inserted into the drag roller hollow axis. Advantageously, the screw element head does not contact the drag roller directly. The forces acting on the drag roller from the screw element head are advantageously reduced by the intermediate element.

In a further advantageous embodiment, the drag roller assembly set comprises a cover element. This cover element and the drag roller are advantageously matched to one another in such a way that the cover element can be applied laterally to the drag roller, in particular to reduce the penetration of dirt, on the side of the drag roller on which the screw element through the drag roller into the Trailing roller hollow axle is introduced. The cover element is thus advantageously for Application to the towing roller on the side thereof, which faces away from the escalator step when the towing roller is arranged on an escalator step.

A further advantageous embodiment provides that a groove is made on the outer diameter of the spacing section of the trailing roller hollow axle in such a way that, together with a correspondingly designed cover of the trailing roller of the trailing roller mounting set, it forms a labyrinth seal for supporting the trailing roller.

Furthermore, an escalator step is proposed to solve the above-mentioned task. Such escalator steps are used in passenger conveyors such as escalators or moving walks. In the case of moving walks, such escalator steps are also referred to as pallets. The proposed escalator step comprises an axle receptacle into which a trailing roller hollow axle according to the invention, in particular a trailing roller hollow axle according to one of the configurations described above or a trailing roller hollow axle according to a combination of these configurations, is introduced. The drag roller hollow axle is advantageously introduced into the axle receptacle in such a way that the connecting section of the drag roller hollow axle is arranged in the axle receptacle. The securing section of the trailing roller hollow axle is arranged behind the axle holder. A towing roller is arranged in the arrangement section of the trailing roller hollow axle. In this case, a pin, in particular a screw element, is introduced into the trailing roller hollow axle arranged in the axle receptacle. The securing section of the trailing roller hollow axle advantageously forms an undercut against the axle mount of the escalator step.

Advantageously, the bolt is introduced into the towing roller hollow axle in such a way that the arrangement section is enlarged and a press fit between the towing roller hollow axle and the towing roller is realized in the arrangement section. The pin is advantageously introduced into the trailing roller hollow axle in such a way that the connecting section is enlarged and in the connecting section a press fit between the trailing roller hollow axle and the axle receptacle is realized.

Further advantageously, the bolt is introduced into the trailing roller hollow axle in such a way that the securing area of the trailing roller hollow axle is widened, in particular in such a way that the outer diameter of the hollow axle in the securing area is larger than the inner diameter of the axle receptacle. This advantageously provides a simple and inexpensive way of securing against loss, which advantageously increases operational reliability when using such an escalator step. In particular, in a configuration of the securing section of the trailing roller hollow axle as a deformation section, it is provided that a screw element is inserted and screwed into the trailing roller hollow axle as a bolt, the securing section of the trailing roller hollow axle being expanded, in particular in such a way that the outer diameter of the trailing roller hollow axle in the securing section is larger than that Inner diameter of the axle holder.

In particular, it is provided that the escalator step has, as is customary with an escalator step, in each case one axle mount or two axle mountings, so that the escalator step comprises two or four tow rollers arranged on the escalator step by means of the trailing roller hollow axle according to the invention. In addition, it is particularly provided that the axis receptacles are conical or polygonal pyramid-shaped and advantageously each taper from the outside inwards. The axle mounts and the trailing roller hollow axles are advantageously matched to one another.

The person conveyor device further proposed to achieve the object on which the present invention is based comprises an endless conveyor belt which is formed from a multiplicity of escalator steps proposed according to the invention. The escalator steps are advantageously guided over the guide rails of the passenger conveyor by means of the drag rollers. The respective trailing roller hollow axis of the escalator steps advantageously have the step hook section. It is furthermore advantageous at least along a section of the passenger conveyor, in particular in the so-called transition curve of the passenger conveyor, in the longitudinal direction of the passenger conveyor, at least one securing element, in particular at least one securing rail, at a distance of up to 30 cm (cm: centimeters), preferably at a distance of up to 15 cm, particularly preferably at a distance of no more than the trailing roller radius, arranged above the respective step hook sections. This advantageously prevents the escalator step from being lifted out of the guide system.

The method proposed for mounting a trailing roller, in particular a trailing roller usually used for escalators or moving walks, on an escalator step, in particular an escalator step usually used for escalators or moving walks, is provided by the method Use of a trailing roller assembly set according to the invention, in particular a trailing roller assembly set according to one of the embodiments described above or a trailing roller assembly set according to a combination of these configurations. The trailing roller is advantageously arranged on the trailing roller hollow axle, in particular in such a way that the trailing roller with its axle end receptacle is applied to the arrangement section of the trailing roller hollow axle. Advantageously, the trailing roller hollow axle is introduced into the axle receptacle of the escalator step, in particular in such a way that the trailing roller is arranged in front of the axle receptacle of the escalator step, the connecting section of the trailing roller hollow axle is arranged in the axle receptacle of the escalator step and the securing section of the trailing roller axle is arranged behind the axle receptacle of the escalator step. The introduction into the trailing roller hollow axle is preferably carried out after the trailing roller has been arranged on the trailing roller hollow axle. The bolt, in particular the screw element, of the trailing roller assembly set is introduced into the trailing roller hollow axle, preferably after the trailing roller hollow axle has been inserted into the axle holder of the escalator step. A threadless bolt can be inserted, for example, by driving it in using a suitable tool, for example a hammer.

If the bolt is a screw element, the screw element is screwed into the trailing roller hollow axle, in particular such that the external thread of the screwing element engages at least in the hollow axle wall in the securing area of the trailing roller hollow axle. When the screwing element has already been fully inserted into the trailing roller axle, the screwing element is advantageously rotated further, that is, the screwing element is screwed on further, so that the second end of the trailing roller hollow axis on the external thread of the screwing element is moved in the direction of the axis mount of the escalator step. This advantageously expands the securing section of the trailing roller hollow axle. The screwing element is advantageously rotated further, that is, screwed in further, until the widening of the trailing roller hollow axis in the securing section forms a captive protection against the axle receptacle. An additional fixing of the securing section is advantageously not necessary.

• 1 in einer vereinfachten schematischen Schnittdarstellung ein Ausführungsbeispiel für eine erfindungsgemäße Schlepprollenhohlachse, welche als Teil eines Schlepprollenmontagesets zur Anordnung einer Schlepprolle an einer Fahrtreppenstufe verwendet wird;
• 2 in einer vereinfachten schematischen Darstellung ein weiteres Ausführungsbeispiel für eine erfindungsgemäße Schlepprollenhohlachse zusammen mit weiteren Teilen eines Ausführungsbeispiels eines erfindungsgemäßen Schlepprollenmontagesets vor der Anordnung der Schlepprolle an der Schlepprollenhohlachse;
• 3 in einer vereinfachten schematischen Schnittdarstellung ein weiteres Ausführungsbeispiel für eine erfindungsgemäße Schlepprollenhohlachse, welche als Teil eines Schlepprollenmontagesets zur Anordnung einer Schlepprolle an einer Fahrtreppenstufe verwendet wird;
• 4 in einer perspektivischen Darstellung ein Ausführungsbeispiel für eine erfindungsgemäße Fahrtreppenstufe;
• 5 in einer vereinfachten schematischen Schnittdarstellung ein weiteres Ausführungsbeispiel für eine erfindungsgemäße Schlepprollenhohlachse;
• 6 in einer vereinfachten schematischen Schnittdarstellung ein weiteres Ausführungsbeispiel für eine erfindungsgemäße Schlepprollenhohlachse;
• 7 in einer perspektivischen Darstellung ein weiteres Ausführungsbeispiel für eine erfindungsgemäße Schlepprollenhohlachse;
• 8 in einer vereinfachten schematischen Schnittdarstellung ein weiteres Ausführungsbeispiel für eine erfindungsgemäße Schlepprollenhohlachse, welche als Teil eines Schlepprollenmontagesets zur Anordnung einer Schlepprolle an einer Fahrtreppenstufe verwendet wird;
• 9 in einer vereinfachten perspektivischen Darstellung einen Teil eines Ausführungsbeispiels für eine erfindungsgemäße Personenfördervorrichtung; und
• 10 in einer Frontaussicht einen vergrößerten Ausschnitt des in 9 gezeigten Ausführungsbeispiels für eine erfindungsgemäße Personenfördervorrichtung.

Further advantageous details, features and design details of the invention are explained in more detail in connection with the exemplary embodiments shown in the figures. It shows:

• 1 a simplified schematic sectional view of an embodiment for a trailing roller hollow axle according to the invention, which is used as part of a trailing roller assembly set for arranging a trailing roller on an escalator step;
• 2nd in a simplified schematic representation, a further exemplary embodiment for a trailing roller hollow axle according to the invention together with further parts of an exemplary embodiment of a trailing roller mounting set according to the invention prior to the arrangement of the trailing roller on the trailing roller hollow axis;
• 3rd in a simplified schematic sectional view a further embodiment for a trailing roller hollow axle according to the invention, which is used as part of a trailing roller assembly set for arranging a trailing roller on an escalator step;
• 4th a perspective view of an embodiment of an escalator step according to the invention;
• 5 in a simplified schematic sectional view a further embodiment for a trailing roller hollow axle according to the invention;
• 6 in a simplified schematic sectional view a further embodiment for a trailing roller hollow axle according to the invention;
• 7 a perspective view of another embodiment for a trailing roller hollow axle according to the invention;
• 8th in a simplified schematic sectional view a further embodiment for a trailing roller hollow axle according to the invention, which is used as part of a trailing roller assembly set for arranging a trailing roller on an escalator step;
• 9 in a simplified perspective view, part of an embodiment for a passenger conveyor device according to the invention; and
• 10th in a front view an enlarged section of the in 9 Embodiment shown for a passenger conveyor device according to the invention.

In the 1 shown trailing roller hollow axle 1 serves to arrange the in 1 also shown trailing roller 2nd on an escalator step shown in detail 30th . The drag roller 2nd is designed as a roller bearing.

The shown trailing roller hollow axle 1 can in particular be made of plastic. The trailing roller hollow axle 1 has a first end 4th and a second end 5 on. Starting from the first end 4th the trailing roller hollow axle 1 towards the second end 5 the trailing roller hollow axle 1 includes the trailing roller hollow axle 1 thereby an arrangement section in sequence 6 , a spacing section 9 , a connecting section 7 and a fuse section 8th . The securing section 8th is formed in this embodiment as a deformation section. In the arrangement section 6 is a drag roller 2nd on the trailing roller hollow axle 1 arranged. This is the trailing roller hollow axle 1 with the arrangement section 6 in the axle end 3rd the drag roller 2nd introduced in such a way that the inner ring of the drag roller designed as a roller bearing on a first part of the arrangement section 6 the trailing roller hollow axle 1 sits. The ordering section 6 the trailing roller hollow axle 1 then has a step-like jump in a second part, so that the arrangement section 6 in this second part one compared to the first part of the arrangement section 6 enlarged outer diameter and thus in this second part a correspondingly larger wall thickness of the hollow axle wall 11 having. The trailing roller hollow axle 1 supports itself with the second part of the arrangement section 6 against the inner ring of the drag roller 2nd and thus prevents the drag roller 2nd about the arrangement section 6 out onto the trailing roller hollow axle 1 can be applied.

The ordering section 6 the trailing roller hollow axle 1 goes directly into the spacing section in this embodiment 9 the trailing roller hollow axle 1 about. The spacing section 9 the trailing roller hollow axle 1 is designed such that this one opposite the connecting section 7 the trailing roller hollow axle 1 enlarged outer diameter and thus a correspondingly larger wall thickness of the hollow axle wall 11 having. The spacing section 9 ensures that the drag roller 2nd from the escalator step 30th is spaced apart and does not contact them directly, so that in particular free rotation of the outer ring of the drag roller designed as a roller bearing 2nd not through the escalator step 30th is hindered. The spacing section 9 also serves as a stop, which further introduces the trailing roller hollow axle 1 in the axle holder 31 the escalator step 30th prevented. At the spacing section 9 the trailing roller hollow axle 1 the connecting section closes directly 7 the trailing roller hollow axle 1 at.

The trailing roller hollow axle 1 is with the connecting section 7 in the axle holder 31 the escalator step 30th arranged. The trailing roller hollow axle 1 is in the connecting section 7 , as well as the axle mount 31 the escalator step 30th , conical and tapers from the outside of the escalator step 30th towards the inside of the escalator step 30th . The trailing roller hollow axle 1 could in particular also in the connecting section 7 be polygonal pyramid-shaped instead of conical. In this case, the axle mount would advantageously be designed to be complementary to it. The length of the connection section 7 the trailing roller hollow axle 1 corresponds to the length of the axle holder 31 the escalator step 30th .

Behind the connecting section 7 the trailing roller hollow axle 1 , i.e. behind the axle holder 31 the escalator step 30th In this exemplary embodiment, the securing section begins directly 8th the trailing roller hollow axle 1 . The securing section 8th is formed with the in the trailing roller hollow axis 1 inserted bolt 20th , which in this embodiment is a screw with a threaded section 22 acts to interact such that turning the screw 20th to widen the hollow caster axle 1 immediately behind the connecting section 7 and therefore behind the axle mount 31 the escalator step 30th leads. To expand directly behind the axle holder 31 to effect is the securing section 8th in an expansion definition area 10th versus the rest of the backup section 8th designed differently, in particular with a more flexible hollow axle wall 11 . Is present in the expansion definition area 10th the wall thickness of the hollow axle wall 11 reduced, in particular with a steady decrease in the wall thickness of the hollow axle wall 11 with constant outer diameter of the trailing roller hollow axle 1 in the fuse section 8th down to a minimum wall thickness and a subsequent steady increase in the wall thickness of the hollow axle wall 11 , as in 1 shown. The expansion definition area 10th with the changed flexibility of the wall thickness of the hollow axle wall 11 leads to the fact that the trailing roller hollow axis 1 in this expansion domain 10th when turning the screw 20th on their external thread 21 compressed and thus forms a captive device, such that the trailing roller hollow axle 1 not non-destructively from the axle holder 31 the escalator step 30th can be removed. Especially when turning the screw 20th , which is used to widen the hollow caster axle 1 in the fuse section 8th leads to reduce the forces acting on the drag roller is in this embodiment between the screw head 23 and the drag roller 2nd a washer 40 arranged.

With reference to the in 2nd Embodiment illustrated below are an embodiment of a tow roller assembly set proposed by the present invention and a method for arranging a tow roller 2nd at an escalator step 30th using such a drag roller assembly set explained in more detail. The drag roller assembly set includes a drag roller hollow axle 1 , a drag roller 2nd , a screw element 20th , an intermediate element 40 and a cover member 45 . The drag roller 2nd is designed as a roller bearing in this embodiment. The drag roller 2nd has an axle end mount 3rd on, which is formed in particular by the space within the inner ring of the rolling bearing. The outer ring of the drag roller 2nd , i.e. the running surface of the drag roller 2nd , is in this embodiment made of a plastic. Such trailing rollers are widely used for escalators and moving walks.

The trailing roller hollow axle 1 the drag roller assembly set includes a first end 4th and a second end 5 , the trailing roller hollow axle 1 from the first end 4th towards the second end 5 an arrangement section in the order described below 6 , a complaint section 9 , a connecting section 7 and a fuse section 8th having. At the first end 4th the trailing roller hollow axle 1 becomes the drag roller 2nd with the axle end mount 3rd on the trailing roller hollow axle 1 applied until the drag roller 2nd completely on the layout section 6 the trailing roller hollow axle 1 located. The design of the spacing section 9 with one opposite the arrangement section 6 enlarged outer diameter of the trailing roller hollow axle 1 serves as a stop for the drag roller 2nd and prevents the drag roller from being applied too far 2nd on the trailing roller hollow axle 1 . Is the drag roller 2nd on the trailing roller hollow axle 1 applied, so the drag roller hollow axis 1 in the axle holder 31 an escalator step 30th plugged in. Here are the axis 31 as well as the connecting section 7 the trailing roller hollow axle 1 each conical and coordinated. In an embodiment variant not shown, a polygonal pyramid shape is provided instead of a conical shape.

The spacing section 9 the trailing roller hollow axle 1 forms a stop that introduces the trailing roller hollow axle 1 over the connecting section 7 out into the axle holder 31 prevented. Is the drag roller hollow axle 1 like that in the axle 31 the escalator step 30th introduced that the trailing roller hollow axle 1 with their connecting section 7 completely in the axis mount 31 is arranged, is in the trailing roller hollow axis 1 at their first end 4th the screw element 20th introduced. Thereby, the screw element 20th first a washer 40 upset. The screw element 20th has a threaded section 22 with an external thread 21 on and a screw head 23 .

The screw element 20th is then in particular by means of a screw head 23 engaging tool (in 2nd not shown) in the trailing roller hollow axle 1 screwed in. By inserting and screwing in the screw element 20th in the drag roller hollow axle 1 the arrangement section widens 6 the trailing roller hollow axle 1 on what's in 2nd symbolically by the arrows 55 and the curved lines shown below are shown. By widening the arrangement section 6 the trailing roller hollow axle 1 between the trailing roller hollow axle 1 and the drag roller 2nd in the ordering section 6 the trailing roller hollow axle 1 a press fit is formed. In addition, the connecting section widens 7 on what's in 2nd symbolically by the arrows 50 and the dashed arc lines are shown. This creates a press fit between the trailing hollow axle 1 and the axle mount 31 in the connection section 7 the trailing roller hollow axle 1 manufactured. Even if the screw element 20th completely into the trailing roller hollow axle 1 is introduced, the screw element 20th screwed on. The securing section 8th the trailing roller hollow axle 1 is designed in such a way that it engages with the external thread 21 of the screw element 20th is. By turning the screw element further, the second end migrates 5 Trailing roller hollow axle 1 towards the first end 4th the trailing roller hollow axle 1 , causing the trailing roller hollow axle 1 in the fuse section 8th expands. To expand the security section in a targeted manner 8th behind the axle holder 31 to achieve, the trailing roller hollow axis 1 in this area of the fuse section 8th an expansion definition area 10th on. In this expansion definition area 10th shows the trailing roller hollow axle 1 less compliance than in the rest of the securing section 8th , for example through a cavity within the trailing roller hollow axis 1 , as in 2nd in the expansion definition area 10th shown. The screw element 20th is then rotated further until the trailing roller hollow axis 1 in the fuse section 8th has expanded or spread such that the deformed securing section 8th the trailing roller hollow axle 1 practically forms a captive device that prevents the trailing roller hollow axle 1 from the recording 31 can be removed unintentionally. Finally, a cover element 45 on the drag roller 2nd applied, which in particular prevents contaminants from entering the rolling bearing.

In 3rd is a completely at the escalator step 30th by means of a trailing roller hollow axle 1 and a screw element 20th arranged drag roller 2nd shown. The arrangement can in particular as with reference to FIG 2nd explained. The screw element 20th was rotated so far that the securing section 8th the trailing roller hollow axle 1 has widened and widened 12th the trailing roller hollow axle 1 has trained. This expansion 12th serves as a protection against loss and prevents the drag roller 20th together with the trailing roller hollow axle 1 from the axle holder 31 the escalator step 30th without removing the screw element 20th can be removed non-destructively. The spacing section 9 the trailing roller hollow axle 1 spaced the drag roller 2nd from the escalator step 2nd and enables the towing roller to rotate freely 2nd on the trailing roller hollow axle 1 . The drag roller 2nd is twist-proof with the trailing roller hollow axle 1 in the ordering section 6 the trailing roller hollow axle 1 connected. The trailing roller hollow axle 1 is also in the connecting section 7 twist-proof with the axle holder 31 the escalator step 30th connected. This means that the trailing roller hollow axle 1 in the axle holder 31 can't turn.

In 4th is an example of an escalator step 30th shown an escalator, which has a drag roller on each side 2nd having. The drag rollers 2nd are here, especially with reference to 2nd explained and in 3rd shown at the escalator step 30th by means of a trailing roller hollow axle 1 arranged. The escalator step 30th has, as is customary for escalator steps designed for escalators, in particular a web on each side 32 , also called step cheeks, on which the axle mount 31 the escalator step 30th has, in which the drag roller hollow axis 1 is introduced. An expansion 12th the trailing roller hollow axle 1 directly behind the axle holder 31 the escalator step 30th secures the respective towing roller 2nd against an unwanted loss. The escalator step 30th corresponds, except for the attachment of the trailing rollers 2nd , essentially an escalator step commonly used for escalators. It goes without saying that an escalator step for a moving walk would not have a riser, but a corresponding web with an axle mount would be arranged directly on the step.

in 5 is another embodiment of a trailing roller hollow axle 1 shown. The shown trailing roller hollow axle 1 can in particular be made of plastic. The trailing roller hollow axle 1 has a first end 4th and a second end 5 on. The first end 4th the trailing roller hollow axle 1 is designed such that a bolt, in particular a screw element, such as a threaded bolt, into the trailing roller hollow axis 1 can be introduced. The second end 5 the trailing roller hollow axle 1 on the other hand is not designed to be able to insert a corresponding bolt here.

Starting from the first end 4th the trailing roller hollow axle 1 towards the second end 5 the trailing roller hollow axle 1 includes the trailing roller hollow axle 1 a snap mechanism in sequence 19th , an arrangement section 6 , a spacing section 9 , a connecting section 7 and a fuse section 8th . The one before the arrangement section 6 arranged snap mechanism 19th advantageously forms an additional protection against loss for one on the arrangement section 6 arranged drag roller. Here, the trailing roller hollow axle 1 Compress at the first end to place a drag roller on the drag roller hollow axle 1 to enable. Because the snap mechanism 19th is designed to be resilient, the snap mechanism takes 19th after attaching the drag roller, return to its original position. This effect is further enhanced by inserting a bolt into the trailing roller axle 1 amplifies what's in 5 through the arrows 58 is represented symbolically. The elevation of the snap mechanism 19th forms an undercut compared to that on the arrangement section 6 applied drag roller. In addition, the drag roller hollow axle 1 in the ordering section 6 configured to interact with a pin inserted into the trailing roller hollow axle in such a way that the outer diameter of the arrangement section 6 enlarges or expands what in 5 symbolically by the arrows 55 is shown.

The ordering section 6 the trailing roller hollow axle 1 goes directly into the spacing section in this embodiment 9 the trailing roller hollow axle 1 about. The spacing section 9 fulfills the in particular in connection with the in 1 illustrated embodiment explained function. At the spacing section 9 the trailing roller hollow axle 1 the connecting section closes directly 7 the trailing roller hollow axle 1 at. The trailing roller hollow axle 1 is in the connecting section 7 conical. In this embodiment, the wall thickness of the trailing roller hollow axle increases 1 in the connection section 7 starting from which to the spacing section 9 subsequent end of the connecting section 7 towards the at the fuse section 8th subsequent end of the connecting section 7 continuously. The trailing roller hollow axle 1 could in the connecting section 7 especially also correspondingly polygonal pyramid-shaped instead of conical. The connecting section 7 is also formed in this embodiment, with a in the trailing roller hollow axis

Behind the connecting section 7 the trailing roller hollow axle 1 , i.e. behind the axle holder 31 the escalator step 30th In this exemplary embodiment, the securing section begins directly 8th the trailing roller hollow axle 1 . The securing section 8th is in this embodiment as part of a snap mechanism 13 with surveys 14 educated. The trailing roller hollow axle 1 can be in the fuse section 8th in the field of surveys 14 compress to insert the trailing roller hollow axle 1 in a corresponding axle mount of an escalator step. For this purpose, the surveys, as in 5 shown, advantageously on bevels that facilitate the insertion. So that the trailing roller hollow axle 1 in the field of surveys 14 can collapse, shows the trailing roller hollow axle 1 in this embodiment in particular material cutouts 17th in the hollow axle wall 11 on. These also cause the securing section 8th after inserting the trailing roller hollow axle 1 in an axis of an escalator step, what in 5 symbolically by the arrows 57 is shown. After widening, the surveys form 14 an undercut at the end of an axle mount against the escalator step. The effect of widening the fuse section 8th to provide a captive device for the trailing roller hollow axle inserted in an axle holder of an escalator step 1 is done by inserting a pin into the trailing roller axle 1 reinforced. The bolt expands the securing section 8th further on so that the trailing roller hollow axle 1 without removing the bolt, it can no longer be removed non-destructively from an axle holder of an escalator step.

This in 6 shown embodiment of a trailing roller hollow axle 1 is similar to that in 5 shown embodiment. Unlike the one in 5 shown trailing roller hollow axle 1 indicates the in 6 shown trailing roller hollow axle 1 following the fuse section 8th however, a step hook section 18th on. It is particularly provided that a bolt for insertion into the trailing roller hollow axle 1 according to the length of the trailing roller hollow axle 1 is formed and in particular also in the step hook section 18th extends into it. The trailing roller hollow axle inserted in an axle holder of an escalator step 1 protrudes with the step hook section 18th a few centimeters, in particular between 5 cm and 25 cm, preferably between 7 cm and 17 cm, beyond the axis mount. The step hook section forms 18th the part of a safety device which prevents an escalator step from being lifted out of the escalator guidance system, in particular with reference to that in FIG 9 and 10th The exemplary embodiments shown are explained in more detail.

In 7 is another embodiment of a trailing roller hollow axle 1 shown in a perspective view. The trailing roller hollow axle 1 With regard to their design, corresponds essentially to the design of the in 6 shown and with reference to 6 explained trailing roller hollow axle. Starting from the first end 4th the trailing roller hollow axle 1 towards the second end 5 the trailing roller hollow axle 1 shows the trailing roller hollow axle 1 thereby a snap mechanism 19th to which the arrangement section is directly connected 6 for arranging a drag roller on the drag roller hollow axis 1 connects. As in 7 shown, the first part of the trailing roller hollow axis 1 right into the arrangement section 6 Incisions 17th on which of the improved function of the snap mechanism 19th serve. At the arrangement section 6 the spacing section closes 9 which has a stop for one on the arrangement section 6 applied drag roller forms the drag roller spaced from the escalator step. On the spacing section 9 follow the connecting section 7 , the securing section 8th and the step hook section 18th . As in 7 shown, has the trailing roller hollow axis in this embodiment 1 over the full backup section 8th as well as almost the full step hook section 18th includes the full connection section 7 Incisions 17th on. This material savings 17th also serve to improve the functioning of the snap mechanism 13 . This is how the securing section can be 8th with the surveys 14 improved for insertion of the trailing roller hollow axle 1 squeeze into an axle holder of an escalator step. The snap mechanism 13 forms for a trailing roller hollow axle introduced into an axle receptacle of an escalator step 1 a loss protection. Like the snap mechanism 13 the trailing roller hollow axle 1 thereby serves as a protection against loss 8th shown in a further embodiment.

In the 8th shown trailing roller hollow axle 1 largely corresponds to that in 6 respectively 7 shown trailing roller hollow axle. In 8th is the trailing roller hollow axle 1 thereby in the axle holder 31 an escalator step 30th introduced such that the connecting section 7 the trailing roller hollow axle 1 completely in the axis mount 31 the escalator step 30th is arranged. As in 8th illustrated takes the snap mechanism 13 after inserting the trailing roller hollow axle 1 in the axle holder 31 return to the original position, taking the surveys 14 of the snap mechanism 13 an undercut of the escalator step 30th in the area at the end of the axle holder 31 form. The outside diameter of the fuse section 8th the trailing roller hollow axle 1 is thus at least in sections larger than the inner diameter of the axle mount 31 . As also in 8th visible, towers above the hollow caster axle 1 with the step hook section 18th the end of the axis 31 clear. This step hook section 18th the trailing roller hollow axle 1 serves together with a securing element 34 , which is designed in particular as a guide rail, surely us function in order to prevent an escalator step from being lifted out of the guide system of a passenger conveyor device.

In 9 is a section of a passenger conveyor with a portion of a guidance system 34 and an escalator step 30th shown. The escalator step 30th has trailed hollow hollow axles arranged in the axis of the escalator step 1 as particularly referring to 6 to 8th described, on, at the respective arrangement section 6 the trailing roller hollow axle 1 one drag roller each 2nd arranged and a bolt in the respective trailing roller hollow axis 1 is introduced. Drag rollers 2nd the escalator steps 30th are guided over a guide rail 35 of the guide rail system 34 guided. There is a safety rail along a section of the passenger conveyor in the longitudinal direction of the passenger conveyor 37 as a securing element at a distance of about 4 cm to 8 cm above the step hook section 18th arranged. The arrangement of this guide rail 37 above the step hook section 18th the trailing roller hollow axle 1 is in 10th in an enlarged section of 9 and shown in a frontal view. In this excerpt from 10th is the arrangement of a trailing roller hollow axle 1 in the axle holder 31 an escalator step 30th can be seen, being on the drag roller hollow axle 1 a towing roller to the arrangement section 2nd arranged and a bolt in the trailing roller hollow axis 1 is appropriate. For example, due to a jammed pram wheel, the step would decrease 30th in relation to one before the stage 30th Preventing the ongoing further step, so the escalator step 30th still not out of the leadership system 34 Take off as the escalator step 30th with the step hook section 18th the trailing roller hollow axle 1 on the safety rail 37 would get stuck. Like a step hook section 18th showing trailing roller hollow axle 1 prevents in combination with the guide rail 37 in particular a collision of an escalator step 30th with the comb plate of a passenger conveyor.

The exemplary embodiments shown in the figures and explained in connection with these serve to explain the invention and are not restrictive thereof.

Reference list

1

Trailing roller hollow axle

2nd

Tow roller

3rd

Axle end mount

4th

first end of the trailing roller hollow axle ( 1 )

5

second end of the trailing roller hollow axle ( 1 )

6

Arrangement section

7

Connecting section

8th

Fuse section

9

Spacing section

10th

Expansion definition area

11

Hollow axle wall

12th

Widening of the trailing roller hollow axle ( 1 )

13

Snap mechanism

14

Elevations of the snap mechanism ( 13 )

17th

Material recess in the hollow axle wall ( 11 )

18th

Step hook section

19th

Snap mechanism

20th

Screw element

21

External thread

22

Thread section

23

Screw head

30th

Escalator step

31

Axle support

32

strut

34

Guide rail system

35

Guide rail

37

Securing element

40

Intermediate element

45

Cover element

50

Arrow to symbolize the expansion of the connecting section ( 7 )

55

Arrow to symbolically represent the expansion of the arrangement section ( 6 )

57

Arrow to symbolize the deflection of the snap mechanism ( 13 )

58

Arrow to symbolize the deflection of the snap mechanism ( 19th )

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• GB 1373795 [0004]
• WO 2015/010770 A1 [0005]
• CN 107215761 A [0006]

Claims (25)

Hollow towing roller axle (1) for arranging a towing roller (2) on an escalator step (30) with a first end (4) and a second end (5), the first end (4) of the towing roller hollow axle (1) for applying a towing roller (2 ) is formed on the towing roller hollow axle (1), and the towing roller hollow axle (1), starting from the first end (4), has an arrangement section (6), a connecting section (7) and a securing section (8), the arrangement section (6) for arranging a towing roller (2) on the towing roller hollow axle (1), the connecting section (7) is designed so that the towing roller hollow axle (1) is connected to an escalator step (30) on a corresponding axle holder (31) of this escalator step (30) can be, and the securing section (8) is designed to provide a captive device for the trailing roller hollow axle (1) which is introduced into an axle receptacle (31) of an escalator step (30) . Trailing roller hollow axle (1) Claim 1 , characterized in that the arrangement section (6) and / or the connecting section (7) is designed to interact in this way with a bolt introduced into the trailing roller hollow axle (1), in particular with a screw element (20) introduced into the trailing roller hollow axis (1), that the outer diameter of the arrangement section (6) or of the connecting section (7) increases. Trailing roller hollow axle (1) according to one of the preceding claims, characterized in that the trailing roller hollow axle (1) is at least partially made of a plastic material. Trailing roller hollow axle (1) according to one of the preceding claims, characterized in that the securing section (8) comprises a step hook section (18) towards the second end (5) or a step hook section (18) towards the second end (5) Securing section (8) connects. Trailing roller hollow axle (1) according to one of the preceding claims, characterized in that the securing section (8) is designed at least as part of a snap mechanism, in such a way that the securing section (8) when the trailing roller hollow axle () is inserted into an axle receptacle (31) of an escalator step (30). 1) forms an undercut. Trailing roller hollow axle (1) according to one of the Claims 1 to 4th , characterized in that the securing section (8) is designed to interact with a screw element (20), which is introduced into the trailing roller hollow axle (1) and has an external thread (21), such that the turning of the screw element (20) expands the trailing roller hollow axle (1) behind the connecting section (7) leads. Trailing roller hollow axle (1) Claim 6 , characterized in that the trailing roller hollow axle (1) has in a widening definition area (10) of the securing section (8) a hollow axle wall (11) which is at least different from the rest of the securing section (8), the widening of the securing section (8) due to the different configuration. when a screw element (20) introduced into the trailing roller hollow axis (1) is turned in the expansion definition area (10). Trailing roller hollow axle (1) Claim 7 , characterized in that the hollow axle wall (11) of the trailing roller hollow axle (1) in the expansion definition area (10) has a smaller wall thickness at least compared to the hollow axle wall (11) of the remaining securing section (8) and / or the trailing roller hollow axle (1) in the expansion definition area ( 10) has a material which is softer at least in comparison to the hollow axle wall (11) of the remaining securing section (8). Trailing roller hollow axle (1) according to one of the preceding claims, characterized by a spacing section (9) arranged between the arrangement section (6) and the connecting section (7), the spacing section (9) being designed to provide a distance between one on the trailing roller hollow axle (1 ) arranged trailing roller (2) and an escalator step (30) when the trailing roller hollow axle (1) is inserted into a corresponding axle receptacle (31) of this escalator step (30). Trailing roller hollow axle (1) Claim 9 , characterized in that the trailing roller hollow axle (1) in the spacing section (9) has an enlarged outer diameter compared to the connecting section (7). Trailing roller hollow axle (1) according to one of the preceding claims, characterized in that the trailing roller hollow axle (1) is conical or polygonal-pyramid-shaped in the connecting section (7). Trailing roller mounting set for arranging a trailing roller (2) on an escalator step (30) comprising a trailing roller (2) with an axle end receptacle (3) and a trailing roller hollow axle (1) according to one of the preceding claims, wherein the trailing roller (2) and the trailing roller hollow axle (1) are matched to one another in such a way that the trailing roller (2) with the axle end receptacle (3) can be applied to the arrangement section (6) at the first end (4) of the trailing roller hollow axle (1). Drag roller assembly set according to Claim 12 , characterized by a bolt, in particular a screw element (20), the bolt, the trailing roller (2) and the trailing roller hollow axle (1) being matched to one another in such a way that the bolt is pulled in by the trailing roller (2) attached to the trailing roller axle (1) the trailing roller hollow axle (1) can be inserted. Drag roller assembly set according to Claim 13 , characterized in that the bolt, the trailing roller (2) and the trailing roller hollow axle (1) are further matched to one another in such a way that the bolt inserted into the trailing roller hollow axle (1) widens the arrangement section (6) and thus a press fit between the trailing roller hollow axle (1) and drag roller (2) realized in the arrangement section (6). Drag roller assembly set according to Claim 13 or Claim 14 , characterized in that the bolt and the trailing roller hollow axle (1) are further matched to one another in such a way that the bolt introduced into the trailing roller hollow axis (1) widens the connecting section (7) such that between the trailing roller hollow axis (1) and a corresponding axle mount ( 31) of an escalator step (30) in the connecting section (7) a press fit between the trailing roller hollow axle (1) and the axle receptacle (31) is realized when the trailing roller hollow axle (1) is introduced into the axle receptacle (31). Drag roller assembly set according to one of the Claims 13 to 15 , characterized in that the bolt is a screw element (20) with a threaded section (22) having an external thread (21), the screw element (20), the drag roller (2) and the drag roller hollow axle (1) being matched to one another such that the screw element (20) can be introduced into the trailing roller shaft (1) through the trailing roller (2) attached to the trailing roller shaft (1), such that the external thread (21) at least in the securing section (8) into the hollow shaft wall (11) of the Hollow traction roller axle (1) engages, wherein rotation of the screw element (20) introduced into the hollow traction roller axle (1) leads to an expansion of the securing section (8) of the hollow traction roller axle (1). Drag roller assembly set according to one of the Claims 12 to 16 , characterized by a cover element (45) which is designed for application to the towing roller (2) on the side thereof which, when the towing roller (2) is arranged on an escalator step (30), faces away from the escalator step (30). Drag roller assembly set according to one of the Claims 12 to 17th , characterized in that a groove is made on the outer diameter of the spacing section (9) in such a way that, together with a correspondingly designed roller cover, it forms a labyrinth seal for supporting the towing roller (2). Escalator step (30) with an axle holder (31), in which a trailing roller hollow axle (1) according to one of the Claims 1 to 11 is introduced in such a way that the connecting section (7) of the towing roller hollow axle (1) is arranged in the axle receptacle (31) and the securing section (8) is arranged behind the axle receptacle (31), the towing roller hollow axle (1 ) a drag roller (2) is arranged, and wherein the securing section (8) forms an undercut against the axle holder. Escalator step (30) after Claim 19 , characterized in that a bolt, in particular a screw element (20), is introduced into the trailing roller hollow axle (1) in such a way that the arrangement section (6) is enlarged and a press fit between the trailing roller hollow axis (1) and trailing roller (2) in the arrangement section ( 6), and / or that the connecting section (7) is enlarged and in the connecting section (7) a press fit between the trailing roller hollow axle (1) and the axle holder (31) is realized. Escalator step (30) after Claim 20 , characterized in that the bolt is introduced into the trailing roller hollow axle (1) in such a way that the securing section (8) of the trailing roller hollow axle (1) is widened, in particular in such a way that the outer diameter of the trailing roller hollow axle (1) in the securing section (8) is larger than the inner diameter of the axle holder (31). Passenger conveyor with an endless conveyor belt, characterized in that the conveyor belt consists of a plurality of escalator steps according to one of the Claims 19 to 21 is formed, the escalator steps being guided by means of the drag rollers (2) over guide rails of the passenger conveyor. Passenger conveyor after Claim 22 , characterized in that the trailing roller hollow axis (1) of the escalator steps (30) has the step hook section (18) and at least along a section of the passenger conveyor at least one securing element, in particular at least one securing rail, is arranged at a distance of up to 30 cm above the step hook sections (18) in the longitudinal direction of the passenger conveyor device. Method for mounting a drag roller (2) on an escalator step (30) using a mounting set according to one of the Claims 12 to 18th , the trailing roller (2) being arranged on the trailing roller hollow axle (1), the trailing roller hollow axle (1) being introduced into the axle receptacle (31) such that the trailing roller (2) is arranged in front of the axle receptacle (31), the connecting section ( 7) is arranged in the axle mount (31) and the securing section (8) is arranged behind the axle mount (31). Procedure for installing a drag roller (2) according to Claim 24 wherein the drag roller assembly set according to the screw element (20) Claim 13 comprises, the screw element (20) being introduced into the trailing roller hollow axle (1), the screw element (20) being rotated such that the external thread (21) of the screw element (20) at least into the hollow axle wall (11) in the securing section (8 ) of the trailing roller axle (1) engages, the screw element (20) being rotated further, so that the second end (5) of the trailing roller axle (1) on the external thread (21) is moved in the direction of the axle receptacle (31) of the escalator step (30) , causing the securing section (8) to widen and the screw element (20) to be rotated further until the widening forms a captive lock against the axle receptacle (31).

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