AU2015214971A1

AU2015214971A1 - Roller, in particular a rigid or swivel caster, and a roller attached to a support

Info

Publication number: AU2015214971A1
Application number: AU2015214971A
Authority: AU
Inventors: Uwe Harksen
Original assignee: Tente GmbH and Co KG
Current assignee: Tente GmbH and Co KG
Priority date: 2014-02-05
Filing date: 2015-02-05
Publication date: 2016-08-04
Also published as: DE202014100506U1; JP2017507831A; EP3102428A1; WO2015118067A1; CN106103131A

Abstract

The invention relates, first of all, to a roller (1) or a roller (1) attached to a support (2), in particular a rigid or swivel caster, and having a running wheel (6) that has a running wheel axis (x) and is accommodated in a mounting fork (3), the mounting fork (3) forming an overlap portion (4) with regard to the running wheel (6) and a mounting part (17) being provided preferably in the overlap region (4) and preferably on the upper side, wherein, in addition, in a roller attached to a support, a counter mounting part (29) is attached to the support. In order to improve a roller of the type in question or a roller attached to a support in such a way that easy assembly with the support of a rollable object can be achieved, it is proposed that the mounting part (17) and/or a counter mounting part (29) is designed for sliding attachment. The invention also relates to such a roller (1) or a roller (1) attached to a support (2) in which an attachment pin (35) is provided on the upper side of the overlap region (4), said attachment pin extending in a vertical direction in an assembled state and being in the form of a cone that tapers in the direction of its free end.

Description

Roller, in particular trestle or steering roller and roller fastened to a beam

The invention initially relates to a roller, in particular trestle or steering roller, with a running wheel, which is received in a mounting fork, wherein the mounting fork forms an overlap portion with respect to the running wheel and on which overlap portion a mounting part is provided at the top end.

Furthermore, the invention relates to a roller, in particular trestle or steering roller fastened to a beam, with a running wheel which is received in a mounting fork, wherein the mounting fork forms an overlap portion with respect to the running wheel and on the overlap portion a mounting part is provided at the top end, and with a counter-mounting part fastened to the beam.

Rollers of the type discussed here are known. These are used in particular on hospital beds, palette trolleys, shelves or scaffoldings, in addition, as preferred further down below, on shopping trolleys. In the state as utilised, the rollers have a running wheel which is rotatable about a horizontal axle which is received in a mounting fork. The mounting fork to this end generally comprises two fork legs receiving the axle ends, which are rooted in a fork head forming an overlap portion. On the overlap portion or in the region of a fork head a mounting part is provided, by means of which the roller can be fastened to the moving object. In the case of a steering roller, the mounting part is arranged so that in particular the mounting fork with the running wheel is pivotable relative to the mounting part about an axis that is vertical in the state of utilisation. In the case of a trestle roller, the mounting part is preferably connected to the mounting fork in a rotationally fixed manner.

With respect to the known prior art the object is to further develop a roller of the type discussed or a roller fastened to a beam improved in such a manner that easy-to-handle assembly on the beam of the moving object can be achieved. A possible solution of the object according to a first inventive idea is provided with a roller the purpose of which is that the mounting part is designed for the sliding fastening through movement of the roller in a plane, which based on an assembled state runs parallel to a horizontal plane in which the running wheel axle extends.

With respect to the roller fastened to a beam it is intended that the mounting part and the counter-mounting part are designed for the sliding fastening by way of movement of the roller in a plane, which with respect to an assembled state runs parallel to a horizontal plane which extends in the running wheel axle.

According to the proposed solution, the roller in terms of handling can be favourably fixed to the beam of the moving object, this as a consequence of a moulded sliding fastening. The mounting part of the roller side as well as preferably also the counter-mounting part which is fixed on the beam for example by gluing, welding or screwing are designed so that the mounting part grips the counter-mounting part or vice versa during the course of a sliding movement of the one part relative to the other part. The shifting displacement preferably takes place in a plane which runs horizontally in the assembled state, further in particular in the operating state, in which the roller fastened to the beam is supported on a base, which receives the running wheel axle.

The sliding-on movement for fastening the mounting part on the countermounting part is preferably stop-delimited. Further preferably the fixing position of the roller on the beam is locked.

The assembly of the roller on the beam can be preferably carried out without tools. Subject to cancelling a preferred lock, a disassembly of the roller from the beam can be additionally achieved also in a manner allowing favourable handling.

In a preferred configuration, the mounting part forms a vertically acting back-engagement perpendicularly to the shifting direction and thus preferably in the assembly or operating state. This is achieved in particular by way of mounting part portions which in a cross section through the mounting part and the counter-mounting part in the connection state lie transversely to the shifting direction above and below in vertical overlapping a portion of the counter-mounting part directly interacting with the mounting part. Receiving the countermounting part or a portion of the same in the mounting part accordingly is preferably possible solely by sliding into or out of a region of the mounting part which is suitably profiled in cross section.

Accordingly, the counter-mounting part in its contour is preferably adapted to the contour of the mounting part provided in shifting direction, accordingly viewed in particular with respect to a width extent transversely to the shifting direction.

Preferably, the back-engagement contour of the counter-mounting part is smaller than the back-engagement contour of the mounting part. Preferably, with respect to a cut in a vertical plane, a lower vertical height of the back-engagement portion which is pushed into or to be pushed into the mounting part compared with the clear region of the mounting part receiving this back-engagement portion of the counter-mounting part, which clear region is retained by at least one back-engagement portion of the mounting part.

The counter-mounting part in the assembled state is accommodated in the mounting part subject to placing a spring element in-between. The spring element in preferred configuration offsets the difference viewed in the utilisation state in vertical direction, between back-engagement portion of the countermounting part and receiving region of the mounting part. Further preferably, the spring element in the assembled state acts on the counter-mounting part in such a manner that the same at least tends to be forced upwards in vertical direction against the back-engagement portions of the mounting part forming the back-engagement.

The spring element can preferably be run over by the counter-mounting part subject to elastic deflection during the course of a sliding displacement until an engagement opening for the spring element is reached. The engagement opening is preferably formed in a facing region of the counter-mounting part. This provides a locking of the mounting position. This locking has to be at least cancelled before disassembling the roller from the beam in that for example a spring lug engaging in the engagement opening in the counter-mounting part is relocated into a release position with the help of a tool.

The spring element is preferably a metallic leaf spring element. The mounting part on the roller side as well as the counter-mounting part on the beam side are preferably made from metal, for example aluminium. Hard plastic is also possible in this regard.

The spring element is preferably bonded to or engaged with the mounting part, further in particular captively connected to the mounting part, accordingly is part of the roller to be fixed on the beam.

Furthermore, the invention relates to a roller, in particular trestle or steering roller with a running wheel comprising a running wheel axle, which is received in a mounting fork, wherein the mounting fork forms an overlap portion with respect to the running wheel and on the overlap portion at the top a fastening pin is provided.

The fastening pin, which can also be formed as a pin that is preferably unitarily formed with the mounting part, extends, in assembly position, furthermore in particular in the utilisation position of the roller in vertical direction, here further preferably when the roller is designed as a steering roller, centrally receiving the steering axle.

For solving the object set at the outset it is intended that the fastening pin extending in a vertical direction in an assembled state is formed as a cone tapering towards its free end.

Further preferably, the fastening pin is rotation-symmetrically formed to a pin axis that is vertical in the assembly or utilisation state or to a steering axle when the roller is formed as a steering roller, in the shape of a truncated cone, wherein facing the overlap portion a larger diameter is present than in the end region of the fastening pin spaced vertically upwards facing away from the overlap portion. A cone angle of preferably 0.5 to 2°, in particular 0.75 to 1.5° is provided, which cone angle lies in the region of a self-locking with suitable configuration of the counter-mounting part. The cone preferably extends over a vertical length (vertical extent length of the fastening pin freely extending vertically upwards over the overlap portion of the mounting fork) of 30 to 70 mm. Further preferably, this free vertical length of the fastening pin corresponds to approximately 0.5 times to 2-times, further preferably approximately 0.8-times to 1.5-times of the horizontal spacing viewed in the utilisation position of the ends of the fork legs receiving the running wheel axle.

In a configuration, the mounting part fastened to the beam is designed as a conical sleeve for interaction with a mounting part of the roller designed as conical pin, wherein the cone angle of conical pin and conical sleeve are matched to one another, further preferably are identical. Accordingly, the conical sleeve preferably has a cone angle of 0.5 to 2°, further preferably 0.75 to 1.5°. As a consequence of inserting the fastening pin preferably vertically from below into the conical sleeve that is open towards the bottom, plug-in assembly of the roller on the beam preferably without tools is achievable in a manner that is favourable for handling can be achieved, wherein the plug position as a consequence of the preferred cone angles is of a self-locking design.

An alternative solution approach provides that the mounting part with respect to the assembled state comprises horizontally engagement mouldings which can be overrun in vertical direction.

The roller is preferably configured for fixing to a beam, wherein the engagement fixing can be achieved in particular through a movement of the roller and its mounting part with respect to an assembly and/or utilisation state in vertical direction. The horizontally running engagement mouldings produce back-engagement portions acting in vertical direction.

For overrunning the engagement mouldings, their portions which in the plug-on direction are located at the front, of the mounting part and/or the flank facing in plug-on direction of a counter-engagement moulding of a counterengagement part are provided for example with bevels or a rounding seen in cross section. The mounting part is preferably a metal part for example an aluminium part. Alternatively, a hard plastic part can also be provided in this regard. A pin which extends in vertical direction preferably protrudes over the engagement mouldings. The pin is preferably part of the mounting part, further in particular unitarily formed with the same. In a further preferred configuration with the roller designed as steering roller, the pin extends concentrically to the steering axle. Preferably, the pin is configured in the shape of a circular cylinder.

In a preferred configuration, the engagement mouldings are formed as grooves running horizontally, located opposite and parallel in the region of outer walls of the mounting part, this further preferably with a substantially plate-shaped configuration of the mounting part. In addition, the mounting part is preferably assigned directly to the overlap portion of the mounting fork.

In an alternative configuration, the mounting part forms two mounting walls which extend substantially parallel to one another and are located opposite one another and between them leave a clear space, which in each case comprise the engagement moulding on their free ends. Accordingly, with such a configuration, the engagement mouldings are vertically spaced from the overlap portion, in particular from a passage plane of the mounting part through the overlap portion. A further solution approach starts out from a design in which the roller that is fastened to the beam comprises a counter-mounting part, which is not fastened to the beam directly and accordingly in a pre-assembled manner but is rather formed as a loose part for fastening the roller to the beam.

The counter-mounting part is preferably formed U-shaped (with respect to the assembled state viewed in a vertical cross section transversely to the longitudinal extent of the beam), wherein the U-legs are formed for the snap-on engagement upon joining the mounting part and the counter-mounting part.

To this end, the mounting part in the assembled state comprises horizontally running engagement mouldings which in the assembled state are grasped by counter-engagement mouldings of the counter-engagement part. With a preferred configuration of the engagement mouldings as grooves on the mounting part end the counter-engagement mouldings of the counter-mounting part are preferably formed as ribs which are adapted in cross section.

Through the engagement connection between mounting part and countermounting part, fixing the roller to the beam in vertical direction is achieved, this subject to receiving the beam between the U-legs of the counter-mounting part and in vertical direction between the U-web of the counter-mounting part and the mounting part of the roller.

Between the U-legs a sleeve which is open towards the free end of the U-legs preferably extends. This sleeve is preferably rooted in the U-web of the countermounting part. The sleeve serves for receiving a pin that is formed on the mounting part, by way of which an additional positive connection is achieved. By plugging on the counter-mounting part, the pin of the mounting part is brought into the sleeve subject to retaining the beam profile.

The U-legs of the counter-mounting part in the process reach over the beam, wherein in a preferred configuration the distance of the U-legs relative to one another, which is horizontal in the assembled state, substantially corresponds to the width of the beam viewed in the same direction. Preferably, the inner contour of the counter-mounting part viewed in a cross section, formed through the U-legs and the U-web, is matched to the outer contour of the beam so that in the fixing position preferably a large area contact, in particular full-area contact of the counter-mounting part with the outer wall of the beam is achieved.

The pin of the mounting part and the sleeve of the counter-mounting part penetrate the beam in a configuration, for the purpose of which the beam has a corresponding bore which in the assembled state is orientated vertically. Because of this, an additional fixing of the roller also in longitudinal extent of the beam is achieved.

Pin and sleeve in a configuration each have a length which corresponds to the vertical height of the beam or exceeds the same. Alternatively, the length of the pin and/or of the sleeve can be selected smaller than the vertical beam height.

The surface of the mounting part which in the assembled state faces the U-web of the counter-mounting part is adapted in a further preferred configuration to the facing contour of the beam, so that in this region, too, a preferably full-area contact of the mounting part with the beam is achieved. Accordingly, the beam is further preferably circumferentially grasped in the connecting region with respect to a cross section transversely to the longitudinal extent of the beam over the full area by the mounting part and the counter-mounting part.

In the assembled state, the U-legs of the counter-mounting part are deflected for achieving an elastic preload. Accordingly, the counter-mounting part, in particular its U-leg, is preferably formed from an elastically resettable material. Accordingly, the counter-mounting part can consist of a hard plastic. Alternatively, the required elasticity is provided for example in the case of a configuration of the counter-mounting part as metal part by way of design means, for example partial material tapering in the region of the U-legs.

The U-legs of the counter-mounting part can be orientated, in the unloaded position, i.e. prior to the counter-mounting part being plugged onto the beam, running not necessarily parallel to one another viewed in cross section. Accordingly, the U-legs can run towards the inside and towards one another, this for example subject to including an angle of 1 to 2° to a vertical in the assembled state. Following the plugging-on of the counter-mounting part on the beam and engaging the counter-engagement mouldings in the engagement mouldings of the mounting part a pivot relocation of the U-legs having a tendency towards the outside is obtained, by way of which in the engagement position a preload radially to the inside for locking the engagement position is provided.

The counter-engagement mouldings in this case face towards the inside, i.e. towards one another. Alternatively, the counter-engagement mouldings of the counter-mounting part can also face towards the outside, this in the case of suitable formation of the engagement mouldings of the mounting part facing to the inside. In this case it is preferred that the U-legs of the counter-mounting part in the assembled state are deflected towards the inside, i.e. towards one another, to achieve an elastic preload.

Further alternatively, the counter-mounting part is designed hook-like in cross section, wherein a hook end comprises a counter-engagement moulding for interaction with the mounting part and the other hook end is designed for the preferably direct positive connection interaction with the beam. Substantially, the counter-mounting part is formed L-shaped in cross section, wherein the longer L-leg in the region of its free end comprises the counter-engagement moulding. The shorter L-leg retains a part section of the beam for the positively joined interaction with the same, preferably contacting the beam over the full area.

In a further alternative solution approach it is provided that the mounting part is formed as a closed shackle with a shackle opening that is horizontally accessible in the assembled state.

Together with the roller, the mounting part, starting out from a freely accessible end of the beam, is pushed onto the same so that the beam reaches through the shackle opening. Here, the shackle opening, viewed in sliding-on direction, has an inner cross section which substantially corresponds to the outer cross section of the beam, so that in particular in the assembly position a preferably circumferential contact in cross section of the mounting part or of its shackle with the outer wall of the beam is achieved.

In a preferred configuration, two shackles which are spaced in horizontal direction or in push-on direction behind one another and relative to one another are provided.

As a consequence of the positive connection interaction of the shackle-like mounting part with the beam, fixing of the roller in vertical direction to the beam is achieved.

In horizontal direction or along the beam, locking of the fixing position is achieved, consequently arrangement of a counter-mounting part, which positively interacts with the mounting part, wherein the counter-mounting part is engaged on the beam.

Preferably, the counter-mounting part is configured shackle-like for arrangement of the same between two shackles of the mounting part that are spaced from one another. The shackle-like counter-mounting part preferably has an elastic preload towards the inside.

The leg faces of the shackle-like counter-mounting part facing one another in assembly position carry engagement protrusions, which engage in correspondingly positioned and formed engagement recesses of the beam. Locking of the fixing position also in horizontal direction is thereby achieved.

Fixing the roller on the beam preferably takes place without tools, consequently sliding-on of the shackle-like mounting part on the beam and engagement locking by clipping on the counter-mounting part. A further solution proposal provides that the mounting part comprises a plurality of mounting pins which in the assembled state are orientated vertically and one or more engagement mouldings acting in vertical direction are provided.

In a preferred configuration, the mounting pins freely extend vertically upwards beyond a plane of the mounting part provided by a base portion of the mounting part. Preferably, multiple mounting pins, further preferably two to eight, in particular four mounting pins are preferred.

In a preferred configuration, the mounting pins are configured equally in particular with respect to their cross section viewed transversely to the longitudinal extent and also further preferably with respect to their vertical height. In particular, circle-cylindrical mounting pins are provided.

With respect to a plane viewed transversely to the vertical axis, which in the assembled state preferably runs parallel to a horizontal plane also receiving the running wheel axle, it is provided with a preferred arrangement of four mounting pins, to position these on the corners of a pulled-up square.

Furthermore, engagement mouldings that can be back-engageable are provided on the mounting part for the engaging locking of a plug connection to be achieved via the mounting pins.

With an arrangement of four mounting pins, the engagement mouldings preferably extend between two mounting pins. Further preferably, two engagement mouldings located opposite are provided.

In the assembly position, the mounting pins extend outside the beam, are, with respect to a vertical cross section through the beam, each provided outside laterally of beam walls. Preferably, an engagement moulding in the mounting part is formed between two mounting pins which are spaced from one another in longitudinal extent of the beam. This engagement moulding interacts with an engagement part of the counter-mounting part, which is formed U-shaped for engaging over the beam.

Further preferably, an engagement part is provided on each U-leg of the mounting part, for the corresponding interaction with a correspondingly formed engagement moulding in the mounting part.

The counter-mounting part forms mounting holes for the mounting pins of the mounting part. Preferably, these mounting holes are matched to the dimensions of the mounting pins with respect to their vertical depth in the assembled position and also with respect to their cross section (diameter). A plug/clip-on connection is achieved, which in terms of handling can be favourably produced even without tools. The roller is clamp-mounted on the beam, for the purpose of which the counter-mounting part in the region of its U-opening and the corresponding portion of the mounting part are preferably formed contour-matched to the outer contour of the beam. A further solution proposal also provides that the mounting part is designed U-shaped with mounting walls formed by the U-legs, wherein a shackle is hinged to a mounting wall which is designed for the engagement connection to the opposite mounting wall subject to closing an opening which through the mounting walls is directed vertically upwards in the assembled state.

The U-opening between the mounting walls of the mounting part is preferably adapted, in terms of cross section, to the outer contour of the beam to be encompassed.

In the assembly position, the pivot axis of the shackle extends transversely to a vertical axis, further preferably parallel to a longitudinal extent direction of the beam, so that by throwing over the shackle, the latter retains the top of the beam.

In the region of the end of the shackle located opposite or facing away from the hinge, said shackle is provided with an engagement part for the engagement fixing of the shackle on the U-leg of the mounting part located opposite the hinge side. To this end, the U-leg has an overrunnable engagement moulding.

The roller is clamp-mounted to the beam via the mounting part and the shackle pivoted thereon, wherein the fixing can be carried out preferably without tools and thus favourably in terms of handling. A further solution proposal provides that the fastening pin or pins of the mounting part which in an assembled state extends in vertical direction comprises a mounting profiling extending in circumferential direction.

With respect to an axis centrally penetrating the fastening pin, the mounting profiling in this case can be a circumferential also only partly circumferential groove.

In this respect, a plurality of such grooves arranged in axial direction one behind the other can also be provided.

When forming a groove, the same is provided with an axial distance to the free pin end, which distance preferably corresponds to 0.25-times to 1-times the pin diameter. The free pin end is moulded mushroom head-like.

Alternatively to a configuration of the mounting profiling as a consequence of a moulding of one or more grooves, a complete or partial circumferential collar or a plurality of such collars can also be provided in axial arrangement one behind the other. At any rate, the cylindrical surface of the fastening pin in the profiling region seen in extent direction of the pin is provided with an elevation and/or recess or a plurality of elevations and recesses. The radial height of an elevation or the radial depth of a recess relative to the uninfluenced cylindrical surface preferably corresponds to a hundredth to a fifth in particular, a fiftieth to a tenth of the pin diameter.

In a further preferred configuration, the mounting profiling is formed in the region of a free end of the fastening pin facing from the overlap portion of the mounting fork.

In the assembly position, the fastening pin penetrates the beam in the region of a suitably provided bore, wherein further preferably the end of the fastening pin freely protrudes over the side of the beam located opposite the roller for grasping.

This freely protruding end of the fastening pin is grasped by the countermounting part for fixing the roller on the beam. The same is substantially designed U-shaped and preferably comprises mounting mouldings on opposite inner surfaces of the U-legs which engage in the mounting profiling of the mounting part.

With a groove-shaped configuration of the mounting profiling on the mounting part side, the mounting mouldings are moulded web-like freely protruding over the inner surface of the U-legs to the inside. With a web-like mounting profiling of the mounting part, the mounting mouldings are designed in the form of grooves.

The assembled state is locked through an elastic design of the counter-mounting part. Accordingly, the counter-mounting part is elastically deformable in particular transversely to its longitudinal extent of the beam, which can be achieved through a suitable choice of material of the counter-mounting part and/or by way of design measures.

The positive connection between counter-mounting part and mounting part, further in particular between counter-mounting part and the end of the fastening pin comprising the mounting profiling of the mounting part is achieved, in a configuration, by sliding on or bouncing on of the counter-mounting part in the direction of an axis penetrating the fastening pin (vertical axis in the assembled state).

Alternatively, sliding-on of the counter-mounting part is achievable with respect to the axis of the fastening pin from radially outside in the direction of radially inside, further substantially in the direction of a longitudinal extent of the beam, this subject to retaining the profiled fastening pin end, for the purpose of which the counter-mounting part comprises an insertion opening that is suitably open at the edge in the direction of its mounting mouldings.

As a consequence of forming a circumferential engagement groove in the region of the free end of the fastening pin a mushroom head moulding can be provided. The mushroom head on the end side thereby formed is grasped in a positively joined manner by sliding on the counter-mounting part in a direction transversely to the extent direction of the fastening pin, for the vertical bracing of the fastening pin and accompanied by this for mounting the roller on the beam. The preferred bracing is achieved in particular as a consequence of the elastic configuration of at least the regions which preferably support themselves on the beam, for example U-legs of the counter-mounting part.

The counter-mating part can also be a spring element, which subject to elastic deformation directly supports itself on the beam. Accordingly, the spring element is for example an elastically resettable hard plastic part. Preferred in this regard is a metal spring part, for example a leaf spring, which in the positive connection position with the actuating pin or with the mushroom head of the actuating pin resiliently acts in vertical direction.

Alternatively, the counter-mounting part supports itself on a bearing part, wherein the bearing part in turn supports itself on the beam. Here, the bearing part preferably comprises a positive connection moulding matched to the facing outer contour of the beam, for the matching contact of the bearing part on the beam. The surface of the bearing part that is located opposite the positive connection moulding in vertical direction is preferably designed as a level surface, further preferably directed perpendicularly to the vertical axis. On this flat surface the spring element, in particular in the form of a leaf spring, supports itself.

The mounting part comprises a positive connection moulding which on the outside bears against the beam. Accordingly a concave configuration of the face of the mounting part facing the beam viewed in the direction of the free end of the fastening pin is provided, which concave cross section configuration is matched in a preferred configuration to the cross section configuration of the allocatable beam portion.

The counter-mounting part, too, preferably comprises a positive connection moulding which bears against beam on the outside. This positive connection moulding is preferably rounded in the cross section opposite to the positive connection moulding of the mounting part.

By way of the mounting part and the counter-mounting part, the beam is grasped on the top and bottom, while fixing the roller on the beam is achieved in particular by way of bracing mounting part and counter-mounting part relative to one another. Locking in longitudinal extent of the beam is achieved as a consequence of the fastening pin reaching through the bore on the beam side.

Provided is a further solution proposal in the case of which the fastening pin which in an assembled state extends in vertical direction comprises a secant-like engagement groove, which in a view, which reflects the cross-sectional profile of the engagement groove, subject to including an acute angle, opens directed to the mounting fork.

With respect to a vertical section through the fastening pin, the engagement groove in this case extends starting out from radially outside as far as into the region of the central axis of the fastening pin, so that viewed with respect to the axis, a radial dimension of the engagement groove materialises, which radial dimension corresponds to 0.3-times to 0.6-times of the diameter of the fastening pin in a transverse plane to the axis intersecting the engagement groove.

The radial groove is open radially to the outside wherein an inclination of the engagement groove is provided subject to the inclusion of an acute 30 to 60°, for example 45° to the axis centrally penetrating the fastening pin.

With respect to a vertical cross section through the fastening pin the engagement groove extends from radially outside rising to radially inside.

In the fastening position of the roller on the beam, the fastening pin penetrates the beam in the region of a vertical bore, wherein the secant-like engagement groove is penetrated by an axis of the counter-mounting part, which countermounting part is pivotable about the axis and in the fastening state is held by way of contact with the mounting part and subject to engaging over the beam.

As a consequence of the supporting of the counter-mounting part on the mounting part on the roller side, an influence of the axis accommodated in the engagement groove on the fastening pin materialises, wherein through the obliquely rising engagement groove a force component vertically upwards acts on the fastening pin. Because of this, bracing of the fastening pin against the counter-mounting part is achieved.

In the assembly position, the counter-mounting part flanks the beam on both sides, which portions of the counter-mounting part flanking the beam support the axle in the region of a vertically upper end and in a lower end region located opposite to the former, come to bear against the mounting part.

Fixing of the roller takes place as a consequence of pivoting-in for the purpose of which the counter-mounting part forms a U-shaped handle region, which offers a pivot handle for the assembly.

The axle of the counter-mounting part is inserted for the assembly into the slotshaped engagement groove of the actuating pin, which engagement groove is freely accessible above and on the side of the beam located opposite the mounting part. By pivoting-down the handle region in the direction of the beam and supporting portions of the counter-mounting part on the mounting part on the roller side, bracing is achieved, wherein a fixing position is preferably achieved following the passing-over of a dead centre position during the course of the pivoting operation. In this fixing position, the U-shaped handle region preferably bears against outer wall of the beam over a large area, in particular over the full area.

The counter-mounting part is preferably formed as a bent sheet metal part. A solution proposal also provides that the fastening pin which extends in vertical direction in an assembled state, in the foot region comprises axle mouldings which extend transversely to the longitudinal extent of the fastening pin.

The fastening beam, in the assembly position, preferably penetrates the beam as a consequence of reaching through the fastening pin by way of suitable vertical bores in the beam.

Further preferably, a plate-shaped foot region is provided, which facing the beam comprises a positive connection moulding, preferably in the form of a concave cavity. Starting out from the plate-shaped foot region, the axle mouldings extend, with respect to the vertical axis penetrating the fastening pin, freely radially to the outside.

The counter-mounting part is preferably formed as a bent sheet metal part, further in particular designed U-shaped, wherein on the U-legs slot-like entry recesses that are open on one side are formed, for interaction with the axle mouldings of the mounting part. The U-region preferably forms a handle region which for the assembly offers a pivot handle, subject to utilising the pivot axis provided by way of the grasped axle mouldings.

Accordingly, the counter-mounting part is pivotable by turning about the axle mouldings between a release position and a holding position, wherein in the holding position the U-region of the counter-mounting part bears against the outer wall of the beam preferably over a large area, in particular over the full area.

The counter-mounting part comprises one or more engagement mouldings for interaction with the beam in the assembly position. The engagement mouldings are preferably formed in an elastically resettable region of the counter-mount- ing part, for example in a spring region of the counter-mounting part that is formed through a clearance.

The engagement moulding, in a preferred configuration, is an engagement projection facing in the direction of the beam, which in the assembly position dips into a correspondingly positioned opening in the beam wall. Alternatively, the engagement moulding is formed by an under-reaching portion that is configured resiliently divertible, which in the assembly position retains the lower side of the beam which is located opposite the contact region of the counter-mounting part on the beam.

The regions or value ranges or multiple regions stated above and below also include, with respect to the disclosure, all intermediate values, in particular 1/10-steps of the respective dimension, if applicable also dimensionless, in particular 1.02-times etc. on the one hand for delimiting the mentioned range limits from the bottom and/or top, alternatively or complementarily however also with respect to the disclosure of one or more singular values from the respective range stated.

In the following, the invention is explained by way of the attached drawing, but which merely shows exemplary embodiments. A part which is explained only with respect to one of the exemplary embodiments and is not replaced by another part with a further exemplary embodiment because of the particularity emphasised there, is thus also described for this further exemplary embodiment as possibly existing part in any case. On the drawing it shows:

Fig. 1 in a perspective representation a roller fastened to a beam, relating to a first embodiment;

Fig. 2 the section according to the region II in Figure 1;

Fig. 3 an exploded perspective representation of the roller of a mounting part, of a counter-mounting part, of a spring element and of a beam;

Fig. 4 a representation corresponding to Figure 1, however relating to a second embodiment;

Fig. 5 the section according to the region V in Figure 4;

Fig. 6 in perspective representation the arrangement of a roller on a beam in a third embodiment;

Fig. 7 the section according to the region VII in Figure 6;

Fig. 8 a representation corresponding to Figure 6, relating to a fourth embodiment;

Fig. 9 the section according to the region IX in Figure 8;

Fig. 10 in a perspective representation the arrangement of a roller on a beam in a further embodiment;

Fig. 11 the section according to the region XI in Figure 10;

Fig. 12 an exploded perspective representation thereto;

Fig. 13 a representation corresponding to Figure 10 in a further embodiment;

Fig. 14 the section according to the region XIV in Figure 13;

Fig. 15 an exploded perspective representation thereto;

Fig. 16 in a further embodiment a perspective representation, of the arrangement of a roller on a beam;

Fig. 17 the section according to the region XVII in Figure 16;

Fig. 18 a fourth embodiment in a perspective representation;

Fig. 19 the section according to the region XIX in Figure 18;

Fig. 20 a perspective exploded representation thereto;

Fig. 21 a further embodiment in a perspective part-exploded representation;

Fig. 22 the section according to the region XXII in Figure 21 through the region of a pin connection in the fixing position of the roller on the beam;

Fig. 23 the section according to the region XXIII in Figure 21 through the region of an engagement connection;

Fig. 24 a perspective representation corresponding to the Figure 18, relating to a further embodiment;

Fig. 25 the section according to the region XXV in Figure 24 with the open position of a shackle shown in dash-dotted representation;

Fig. 26 in a perspective representation, the arrangement of a roller on a beam in a further embodiment;

Fig. 27 the section according to the region XXVII in Figurer 26;

Fig. 28 the perspective exploded representation thereto;

Fig. 29 a representation corresponding to Figure 26, relating to a further embodiment;

Fig. 30 the section according to the region XXX in Figure 29;

Fig. 31 the exploded perspective representation thereto;

Fig. 32 a further perspective representation corresponding to Figure 26 of a further embodiment;

Fig. 33 the embodiment according to Figure 32 in a perspective exploded representation;

Fig. 34 in a further embodiment a perspective representation of the arrangement of a roller on a beam;

Fig. 35 the section according to the region XXXV in Figure 34;

Fig. 36 a sectional representation corresponding to Figure 35, however relating to a pivot-open position of a counter-mounting part;

Fig. 37 in a perspective exploded representation the embodiment according to Figure 34;

Fig. 38 a further embodiment in a perspective representation;

Fig. 39 the section according to the region XXXIX in Figure 38;

Fig. 40 a further embodiment in a perspective representation;

Fig. 41 the section according to the region XLI in Figure 40;

Fig. 42 a sectional representation corresponding to Figure 1, relating to a pivot-open position of the counter-mounting part;

Fig. 43 the section according to the region XLIII in Figure 40;

Fig. 44 the exemplary embodiment according to Figure 40 in a perspective exploded representation.

The roller 1 of the embodiments described in the following is designed as a steering roller. The proposed types of fastening the roller 1 to a beam 2 however are possible for example also when the roller 1 is formed as a trestle roller.

The roller 1 comprises a mounting fork 3 with an overlap portion 4 forming a fork head, from which two mounting fork legs 5 which in the utilisation state for example according to the representation in Figure 2 are directed downwards, originate.

Between them, the mounting fork legs 5 receive a running wheel 6 with an axle body 7. The geometrically running wheel axis x in the assembled state, further in particular in the utilisation state, for example according to the representation in Figure 2, extends parallel to a base surface on which the running wheel 6 supports itself. Furthermore, the running wheel axis x in this utilisation position preferably extends in a horizontal plane.

The overlap portion 4 which is substantially orientated parallel to the running wheel axis x and thus horizontally in the utilisation state is substantially composed of two ball retainers 8 and 9 which are arranged on top of one another. These are connected to one another in a rotationally fixed manner, if appropriate also formed in one piece.

The ball retainers 8 and 9 are formed rotation-symmetrically with respect to a vertical axis y, which vertical axis y in the case that the roller 1 is formed as a steering roller is the steering axis at the same time. In the utilisation position according to Figure 2, the vertical axis y stands perpendicularly on the horizontal plane receiving the running wheel axis x.

The axle body 7 of the running wheel 6 and thus corresponding to its connection to the mounting fork legs 5, is moved out of the vertical axis y so far that the steering roller-typical steerabilty is provided.

In a radially outer region, the ball retainers 8 and 9 are spaced from one another in the direction of the vertical axis y, wherein the upper ball retainer 8 on the bottom side forms a ball groove 10 and the ball retainer 9 in the radially outer region at the top forms a circumferential ball groove 11. Between these ball retainers 8 and 9, a circumferential horizontal portion 12 of the mounting fork 3 engages directed from radially outside to radially inside. By way of a row of balls 13 accommodated in the ball groove 10 of the upper ball retainer 8 and a further row of balls 14 accommodated in the ball groove 11 of the lower ball retainer 9, which rows of balls 13 and 14 are accommodated in respective counter-grooves on the top and bottom sides of the horizontal portion 12, the mounting fork 3 is rotationally mounted on the overlap portion 4.

The overlap portion 4 or the ball retainers 8 and 9 forming the same have a central opening 15, preferably receiving the vertical axis y in the middle. A fastening portion 16 of a mounting part 17 engages in this opening 15. The fastening portion 16 and thus the mounting part 17 is thus connected to the overlap portion 4 in a rotationally fixed manner. The fastening portion 16 as well as the opening 15 are configured circular in cross section. However, a multi-edge or non-round form in cross section is also possible in this regard.

The beam 2 is preferably a tubular design. This is preferably a beam 2 of a transport trolley which in the utilisation state is orientated parallel to a horizontal plane, in particular a shopping trolley.

The beam 2 comprises a cross section with two side walls 18 which are orientated vertical in the utilisation position and run parallel to one another, which at the top and bottom are connected in each case by a semi-circular ceiling portion 19 or bottom portion 20.

The ratio of width (distanced of the side walls 18 to one another) and height is preferably selected at 1:1.5 to 1:3, further preferably approximately at 1:2.

The mounting part 17 of the first embodiment shown in the Figures 1 to 3, as well as furthermore of the second embodiment shown in Figure 4, is designed for the sliding fastening of the roller 1 on the beam 2. To this end, the fastening portion 16 of the mounting part 17 at the top of the overlap portion 4 merges into a slide-on portion 21. The latter is configured rectangular in outline -viewed in a transverse plane relative to the vertical axis y.

In a vertical cross section, in which the vertical axis y is shown as perpendicular line intersecting the mounting part 17 in the middle, the slide-on portion 21, starting out from a base portion 22, comprises two wall portions 23 which are substantially L-shaped in cross section and project perpendicularly upwards, the shorter L-legs on their end side form back-engagement portions 24 facing towards the inside and towards one another. Thus, in this vertical section, a back-engagement contour 25 which is open vertically to the top is obtained as a consequence of the spacing of the back-engagement portions 24 relative to one another.

The back-engagement contour 25 preferably extends over the entire length of the slide-on portion 21, accordingly is further preferably continuously open towards both sides and thus in push-on direction a.

Viewed in longitudinal extent of the back-engagement portions 24, the base portion 22 is interrupted by a continuous recess 26.

In the push-on portion 21 a spring element 27 is accommodated. This is preferably a steel spring part which is supported on the portions of the base portion 22 flanking the recess 26 and viewed in longitudinal extent in each case engages the associated face wall of the push-on portion 21 on the end side.

The spring element 27 comprises a cut-free spring lug 28 which in the installation state is angled vertically upwards.

The spring lug 28 as well as the cut-free spring portion supporting the angled spring lug region lie overlapping - with respect to the extent of the vertical axis y - the recess 26.

The spring element 27 is preferably captively held in the push-on portion 21, for example as a consequence of bonding.

On the beam 2, a counter-mounting part 29 is fastened. For this purpose, a high-strength bonded connection is provided for example. Alternatively, in particu- lar when the counter-mounting part 29 is formed as a metal part it is also conceivable to weld the counter-mounting part 29 to the beam 2. Screwing is also possible.

The counter-mounting part 29 in cross section transversely to a longitudinal extent of the same is configured substantially T-shaped, wherein a fixing of the countermounting part 29 on the beam 2 takes place along the free end of the T-leg.

The T-webs which in cross section in the fastening position extend in a horizontal plane are spaced from the connecting surface 30 of the counter-mounting part 29 and form back-engagement portions 24.

In a cross section transversely to the longitudinal extent of the counter-mounting part 29, a back-engagement contour 32 of the counter-mounting part 29 materialises, which is substantially matched to the back-engagement contour 25 of the mounting part 17 taking into account the spring element 27 that is accommodated in the mounting part 17. Accordingly, the back-engagement contour 32 of the counter-mounting part 29 is selected, in particular with respect to the vertical height of the back-engagement portions 31, at least, viewed in vertical direction, smaller by the thickness dimension of the spring element 27 than the vertically clear distance dimensioned between the surface of the base portion 22 and the bottom surface of the back-engagement portions 24 of the mounting part 17 which extend in vertical overlap with respect to the base portion 22.

Preferably in the middle in longitudinal extent of the counter-mounting part 29, a slot-like engagement opening 33 is formed which is orientated transversely to the longitudinal extent of the counter-mounting part 29 and extends in vertical height at least over the thickness of the back-engagement portions 31 and is open vertically downwards, located opposite the connecting surface 30.

For fastening the roller 1 to the beam 2, the same with its mounting part 17 is pushed onto the counter-mounting part 29, wherein the sliding fastening takes place by movement of the roller 1 in a plane which with respect to an assembled state for example according to the representation in Figure 2 runs parallel to a horizontal plane in which the running wheel axis x extends. Accordingly, a sliding relocation preferably takes place in horizontal direction, wherein the back-engagement contour 32 of the counter-mounting part 29 moves into the back-engagement contour 25 of the mounting part 17. During the course of the pushing-on process, the spring lug 28 is overrun downwards in the direction of the recess 26 subject to elastic deflection of the same until this spring lug 28 automatically moves into the slot-shaped engagement opening 33 of the countermounting part 29.

Thereafter, the roller 1 is arrested in vertical direction by the back-engagement formation between counter-mounting part 29 and mounting part 17 in vertical direction. The locking in horizontal direction, which substantially corresponds to a possible moving direction, is provided by the snap-on engagement of the spring lug 28 in the engagement opening 33.

The assembly of the roller 1 on the beam 2 according to this configuration is made possible without tools. For disassembling, the spring lug 28, utilising a tool, for example a screwdriver blade, has to be relocated into the engagement-release position, thereafter as a consequence of the shifting of the roller 1 transversely to the vertical axis y the roller 1 can be removed from the beam 2.

In the second embodiment shown in the Figures 4 and 5 the spring element 27 is supported on the preferably flat-surface base portion 22 of the mounting part 17 and extends, viewed in shifting direction a freely beyond the mounting part 17.

In longitudinal extent of the spring element 27, two spring lugs 28 that are spaced from one another are punched clear, which in the unloaded state project vertically upwards over an upper face of the spring element 27 surrounding the spring lugs 28. The free marginal edges of the spring lugs 28 orientated transversely to the longitudinal extent of the spring element 27 face one another, wherein a distance between these spring lug marginal edges is selected which preferably corresponds to the longitudinal extent dimension of the countermounting part 29 in the region of its back-engagement portions 31 viewed in shifting direction a.

Following the sliding-on of the mounting part 17 onto the counter-mounting part 29 the, seen in shifting direction a, first spring lug 28 is deflected in such a manner that the same initially extends in the plane of the surrounding spring element portions as far as into a pushed-on position, in which as a consequence of the performed overrunning of the spring lug 28, the same elastically resets itself again and its free marginal edge engages behind the associated front wall of the counter-mounting part 29. The end face located opposite the same in this case moves against the marginal edge of the opposite spring lug 28, by way of which a locking of the roller 1 transversely to the vertical axis y or in shifting direction a is achieved.

Preferably, the counter-mounting part 29 on the bottom side comprises a deflection bevel 34 which extends over the width of the spring lugs 28 viewed transversely to the vertical axis y and over the entire length.

The Figures 6 to 9 show two further exemplary embodiments. Here, the mounting part 17 is designed as fastening pin 35, which in the region of the opening 15 is connected to the overlap portion 4 of the mounting fork 3 in a rotation-ally fixed manner.

In the assembly position according to Figure 7, the fastening pin 35 extends upwards in a freely projecting manner beyond the overlap portion 4, this over a freely projecting length of 30 to 50 mm, further preferably over a dimension which corresponds to 0.8-times to 0.5-times the horizontal distance dimension between the portions of the mounting fork legs 5 receiving the axle body 7 of the running wheel 6.

With a circumferential collar 36, the fastening pin 35 is supported preferably over the full area on the top side of the overlap portion 4. Immediately above the collar 36, the fastening pin 35 which is orientated rotation-symmetrically to the vertical axis y, has a diameter which approximately corresponds to a quarter or a half, further preferably approximately a third of the freely projecting length of the fastening pin 35.

Accordingly, the fastening pin 35 of the embodiment shown in the Figures 6 and 7 has a diameter assigned to the collar 36 of 10 to 15 mm and a longitudinal extent of 25 to 40 mm. According to the representation of the embodiment in the Figures 8 and 9, a fastening pin 35 is provided with a diameter of 15 to 20 mm measured above the collar 36 and a free extent length of 40 to 60 mm.

The fastening pin 35 is designed conically tapering towards the free end which in the assembly position faces upwards. Here, a cone angle a of approximately 1° to an axial parallel is provided.

The counter-mounting part 29 fastened to the beam 2 is formed as a conical sleeve 37. The conical sleeve 37 is fastened to the beam 2 on the wall outside in the region of a side wall 18 of the beam 2.

The sleeve opening faces vertically downwards, wherein the inner sleeve wall conically tapers vertically upwards in the direction of a sleeve ceiling 38, this preferably at the same cone angle as the fastening pin 35.

The vertical length of the sleeve space is matched to the free vertical length of the actuating pin 35 above the collar 36. A plug connection is realised. The roller 1 is pushed with the fastening pin 35 into the conical sleeve 37 until a clamping end position, in which as a consequence of the selected cone angle self-locking against relocation in the removal direction, i.e. in the assembled state against relocation in vertical direction downwards is achieved.

The further two embodiments according to the Figures 10 to 12 and 13 to 15 comprise a mounting part 17, on which on the top side of the fastening portion 16 an engagement portion 39 that is rectangular in outline is moulded on. This engagement portion 39 preferably sits on the top side of the overlap portion 4 and has a cross section which is matched in particular to the contour of the rounded base portion 20 of the beam 2. As a consequence of this, a contact surface that is concave viewed in cross section is provided.

In longitudinal extent of the engagement portion 39 and viewed further preferably transversely to the vertical axis y, the engagement portion 39 comprises engagement mouldings 40 located opposite on the wall outside which in the assembled state run horizontally in the form of continuous grooves. According to the cross-sectional representation in Figure 11, a groove ceiling in this respect is directed transversely to the vertical axis y and in the assembled state thus preferably orientated horizontally. For forming a groove which is wedge-shaped in cross section for forming the engagement moulding 40, a lower marginal edge runs at an acute angle in cross section from radially inside to radially outside and viewed from the horizontal shoulder to vertically downwards.

In the middle of the engagement portion 39, centrally receiving the vertical axis y, a circle-cylindrical pin 41 grows out of the contact surface facing away from the fastening portion 16. The same is preferably formed in one piece with the engagement portion 39 and the fastening portion 16.

In the embodiment shown in the Figures 10 to 12, the counter-mounting part 29 is formed with respect to a cross section according to Figure 11, U-shaped with two U-legs 42 which in particular in the assembled state run parallel to one another, which are connected via a retaining portion 43 that is semi-circular in cross section are connected to one another. Through the insides of the U-legs 42 and of the retaining portion 43, a retaining space that is open towards the bottom and delimited on three sides is obtained.

In the region of the free ends facing away from the retaining portion 43, the U-legs 42 on the wall inside carry counter-engagement mouldings 44, which in cross section according to the representation in Figure 11 are matched in contour to the engagement mouldings 40 of the mounting part 17. These counter-engagement mouldings 44 run parallel to one another and preferably over the entire length viewed transversely to the vertical axis y of the counter-mounting part 29.

On the inside of the retaining portion 43 freely projecting into the retaining space a sleeve 45 is moulded on. This sleeve 45 has an inner diameter that is matched to the outer diameter of the pin 41 on the mounting part side. The outer diameter of the sleeve 45 is selected smaller by at least twice the material thickness of the side walls 18 of the beam 2 than the clear distance of the U-leg inner walls relative to one another.

In the assembly position for the roller 1, the beam 2 is provided with vertical bores, wherein the bore 46 in the region of the base portion 20 on the beam side is matched with respect to the diameter to the pin 41 and the bore 47 that is provided in the ceiling portion 19 of the beam 2 matched to the outer diameter of the sleeve 45. A central axis simultaneously penetrating the bores 46 and 47 coincides in the assembled state with the vertical axis y of the roller 1.

For mounting the roller 1, its pin 41 on the mounting part side is introduced from vertically downwards through the bore 46 and roller 1 until the concave contact surface of the engagement portion 30 comes to lie against the base portion 20 on the beam side. In this position, the free end portion of the pin 41 simultaneously dips also through the upper bore 47 of the beam 2. It is also possible that the pin 41 ends within the hollow space of the beam 2.

For fixing the roller Ion the beam 2, the counter-mounting part 29 is finally placed on from above, retaining the beam 2, this subject to threading the sleeve 45 through the bore 47, wherein the pin 41 is retained in the sleeve 45. On reaching the engagement portion 39 on the pin side, the U-legs 42 are elastically spread radially to the outside, this preferably as a consequence of the running-off from running-off bevels 48 formed on the free ends of the U-legs 42 upon colliding with the facing marginal edges of the engagement portion 39.

With further vertical displacement of the counter-mounting part 29 downwards the counter-engagement mouldings 44 engage in the engagement mouldings 40 on the mounting part side as a consequence of elastic resetting of the U-legs 42, by way of which an engaged fixing position of the roller on the beam 2 is achieved.

In this fixing position, the U-legs 42 preferably support themselves with their inner walls on the outer walls of the side walls 18 on the beam side.

To increase the elastic righting and resetting capability of the U-legs 42, a slotshaped clearance 50 as is evident in particular in Figure 10, can be provided in the region of the retaining portion 43 in the portion material outside the connection of the sleeve 45.

For the supporting locking of the engagement fixing position according to Figure 11, a compression spring 49 engaging about the sleeve 45 preferably in the form of a coil spring is provided between the ceiling portion 19 of the beam 2 and the lower side of the retaining portion 43, which in the engagement fixing position has a tendency of loading the counter-mounting part 29 upwards.

With respect to the configuration of the counter-mounting part 29 the embodiment according to the Figures 13 to 15 is substantially changed with respect to the exemplary embodiment described before.

Furthermore, the upper bore 47 in the beam 2, in this embodiment, is configured with the same diameter as the lower bore 46 for the centring grasping of the pin 41 of the mounting part 17 penetrating the two bores 46 and 47.

The counter-mounting part 29 is configured hook-like according to a cross section in Figure 15, with a leg 42, which in the fixing position lies preferably over the full area against the outside of a beam side wall and in the region of its free end comprises a counter-engagement moulding 44 corresponding to the embodiment described before.

The other hook end of the counter-mounting part 29 is bent and formed in cross section in the shape of a pitch circle line with an inner contour which is matched to the contour of the beam 2 in particular in the region of the ceiling portion 19.

The retaining portion 43 thus formed extends, starting out from the U-leg 42, over an angle of more than 90°, preferably more than 100°, for example 120°.

As a consequence of this configuration, a plug/clip-on connection is created for assembling and disassembling the roller 1 on the beam 2 preferably without tools. A further alternative configuration of a plug/ engagement connection is shown in the Figures 16 to 17.

The engagement portion 39 of the mounting part 17 comprises two mounting walls 51 which substantially extend parallel to one another and are located opposite one another and between them leave a clear space. The base delimiting the free space towards the bottom is designed concavely curved according to the previously described embodiments, in particular matched to the contour of the base portion 20 on the beam side.

Altogether, the free space is substantially matched to the contour of the beam 2 in terms of cross section, in particular to the contour relating to the side walls 18 and the base portion 20.

In the region of the ends which are free vertically upwards, over runnable engagement mouldings 40 are formed on the wall inside of the mounting walls 51. These substantially correspond in their cross section according to Figure 17 to the engagement mouldings 40 of the previously described exemplary embodiments.

The counter-mounting part 29 is configured as a retaining portion 33 which on the inside is matched to the contour of the ceiling portion 19 on the beam side, accordingly preferably semi-circular in cross section.

On the retaining portion 43, vertically orientated side arms 52 located opposite in cross section which are vertically orientated in the assembled state are moulded on which are formed thinned with respect to the retaining portion 43. On the wall inside, the side arms tangentially merge into the inner wall of the retaining portion 43.

The side arms 52 on the end side carry counter-engagement mouldings 44 which are directed radially to the outside for the engaging interaction with the engagement mouldings 40 on the mounting part side (see Figure 17). A mounting part 17 in the form of a closed shackle 53 is shown in the exemplary embodiment according to the representations in the Figures 18 to 20. The mounting walls 51 of the mounting part 17 of this embodiment merge into retaining portion-like shackles spaced from one another are provided. Accordingly, a completely enclosed free space for receiving the beam 2 is solely provided by the mounting part 17 which free space is completely enclosed in cross section by a shackle 53 for receiving the beam 2, wherein in the mounting position a preferably full-area contact of the mounting part 17 at least in the shackle region is circumferentially provided.

For the assembly, the roller that is provided with the mounting part 17 is pushed over a free end of the beam 2 onto the same, this subject to penetrating the free space provided by the shackle or shackles 53 of the mounting part 17.

The counter-mounting part 29 which serves for the positioned fixing is shackleshaped, further in cross section according to the representation in Figure 19, semi-circular with engagement legs 54 following on both sides. On the inside of the engagement legs 54, engagement protrusions 55 which are directed towards one another and accordingly directed radially to the inside in the mounting position are moulded on, which engage in correspondingly positioned bores 56 in the side walls 18 of the beam 2 for engagement.

The counter-mounting part 29 seen in the mounting position is positioned transversely to the vertical axis y between the shackles 53 of the mounting part 17, wherein preferably the counter-mounting part 29 fills out the gap left between the shackles 53 in a positively joined manner.

As a consequence of this engagement fixing, the roller 1 is held on the beam 2 both in vertical direction as well as in horizontal direction. The assembly is preferably effected without tools.

In the embodiment according to the Figures 21 to 23, the counter-mounting part 29 is also present as loose part, accordingly is not fixed on the beam 2 as a consequence of a welded, bonded or screwed or riveted connection.

The counter-mounting part 29 in this case is configured cap-like with a retaining portion 43, which is followed by leg portions 57 located opposite and which run substantially parallel to one another.

Retaining portions 43 and leg portions 57 leave an inner retaining space which with respect to a vertical section is matched to the outer contour of the beam 2.

Preferably in the middle in assembly position in extent of the counter-mounting part 29 viewed in beam longitudinal extent an engagement portion 58 projecting away into the retaining space is formed on the lower side of the retaining portion 43, facing the retaining space, which interrupts the contour of the retaining space in extent direction of the beam 2 that is matched to the beam.

In the leg portions 57, two receiving bores 59 which are each spaced from one another and are vertically orientated in assembly position and which open towards the free end face facing vertically downwards.

The middle region of the retaining portion 43 viewed in assembly position in longitudinal extent of the beam 2 is provided between the receiving bores 59 with regions that are freely projecting vertically downwards beyond the opening plane of the receiving bores 59, wherein these projecting regions of the retaining portion 43 form elastically extendable engagement legs 60 with counterengagement mouldings 44 at the end side facing to the inside and thus towards one another.

In the assembly position according to Figure 22, the leg portions 57, starting out from the retaining portion 43, extend approximately up to half the height of the beam 2.

In this embodiment, the mounting part 17 also comprises a U-shaped engagement portion 39 with U-legs 42 which run parallel to one another. The U-legs 42 in assembly position comprise end faces directed vertically upwards, which are preferably arranged in a common horizontal plane and which in assembly position bear against the facing end faces of the leg portions 57 of the countermounting part 29.

Mounting pins 61 extending in vertical direction grow out of the end faces of the U-legs 42. Each U-leg 42 comprises two mounting pins 61 which are spaced from one another. These mounting pins 61 are matched to the receiving bores 59 in the counter-mounting part 29 relative to their diameter and their vertical height, furthermore also with regard to their positioning.

On the wall outside of the U-leg 42 and viewed in a projection in a horizontal plane between two mounting pins 61 of a U-leg 42 an engagement moulding 40 is stamped on the engagement portion 39 for interaction with the associated counter-engagement moulding 42 of the counter-mounting part 29.

The fixing of the roller 1 on the beam 2 without tools which is also preferred here is effected as a consequence of producing a positive connection in which the counter-mounting part 29 put over the beam 2 with its receiving bore 59 grasps the mounting pins 61 of the mounting part 17. The fixing position is locked as a consequence of an engagement connection of mounting part 17 and counter-mounting part 29 in the region of the interacting engagement mouldings 42 and counter-engagement mouldings 44. Because of this, the roller 1 is held on the beam 2 in vertical direction.

For locking the roller 2 also in longitudinal extent of the beam 2, accordingly preferably in horizontal direction, the engagement portion 58 of the countermounting part 29 engages in a correspondingly positioned recess 62 formed in the ceiling portion 19 of the beam 2. This recess 62 can be formed by a clearance in the beam 2. It is also possible, as preferred, to form the recess 62 as a consequence of a material deformation in the ceiling region of the beam 2.

The embodiment according to the Figures 24 and 25 shows a solution with which the counter-mounting part 29 is preferably captively arrested on the mounting part 17. On the mounting part 17, U-legs 42 freely extending vertical- ly upwards in the assembled state which run parallel to one another are moulded on, the inner surfaces of which facing one another as well as the base surface of the mounting part 17 is adapted in contour to the beam 2 penetrating this region in the assembly position.

On one of the U-legs 42 the counter-mounting part 29 is hinged. The hinge axis z extends in extent direction of the U-leg 42 in a parallel plane to a previously described horizontal plane.

The counter-mounting part 29 is formed as a shackle 63 for the positive overlapping in particular of the ceiling portion 20 of the beam 2 in the assembly position according to Figure 24.

The end of the shackle 63 on the hinge side forms a counter-engagement moulding 44 which faces towards the outside, for the engaging interaction with an engagement moulding 40 which is formed inside of the U-leg 42 located opposite the U-leg carrying the hinge.

The necessary elasticity for producing the engagement connection is preferably provided by suitable material choice of the shackle 63, for example as a consequence of a configuration of the shackle 63 from a hard plastic material. Alternatively or also in combination with this, the elasticity - as also in the exemplary embodiments with engagement connections described before and in the following - can be achieved as a consequence of design measures, such as for example material tapering.

Locking the roller 1 on the beam 2 in longitudinal extent direction of the beam 2 and thus in horizontal direction can, although not shown, be achieved as a consequence of a protrusion engagement of the shackle 63 into a suitably posi- tioned recess or bore of the beam 2, for example according to the embodiment of Figures 21 to 23.

The assembly of the roller 1 on the beam 2 can thus be brought about in the simplest manner without tools.

The mounting part 17 can be composed also of a base portion 22, which is con-cavely rounded on the top matched to the contour of the beam 2, with a fastening portion 16 arranged on the bottom, i.e. located opposite the concave side and a pin 41 freely vertically projecting out of the concave surface in the assembly position. Such a mounting part is shown in the exemplary embodiments according to the Figures 26 to 33.

The pin 41 has a free extent length which makes possible in the assembly position projecting-out of the free pin end to vertically upwards when the pin 41 penetrates the beam 2 (bores 46 and 47).

In the region of the free pin end a grasping region for interaction with the counter-mounting part 29 is obtained.

In the embodiment according to the Figures 26 to 28, this free interaction region of the pin 41 is provided with a mounting profiling 64 which extends in circumferential direction of the pin 41. This mounting profiling 64 consists of multiple circumferential engagement grooves 65 which are arranged on top of one another in axial direction. The radial groove depth preferably amounts to less than 1 mm, further preferably 0.2 to 05 mm.

The interaction of the pin 41 or of its mounting profiling 64 with the countermounting part 29 takes place outside, in particular above the beam 2.

The counter-mounting part 29 is formed cap-like in the embodiments according to the Figures 26 to 31, with a contour that faces downwards in cross section, which corresponds in particular to the contour of the ceiling portion 19 on the beam side.

The counter-mounting part 29 of the embodiment in the Figures 26 to 28 comprises, with respect to a vertical section according to Figure 27 with substantially U-shaped configuration with a U-opening facing vertically downwards, mounting mouldings 66 on opposite faces of the U-legs which are formed for the corresponding interaction with the mounting profiling 64 of the pin 41, in particular for interaction with the engagement grooves 65 through circumferential engagement webs 67 which project towards the inside.

For mounting the roller 1 on the beam 2, the pin 41 on the roller side is inserted through the bores 46 and 47 of the beam 2, after which the free end of the pin 41 that is provided with the mounting profiling 64 is exposed above the beam 2 for grasping. The counter-mounting part 29 is plugged on vertically from the top along the vertical axis y subject to the engaging interaction of the mounting profiling 64 and the mounting mouldings 66.

The plug-on operation is preferably effected until a positive connection between counter-mounting part 29 and beam 2, in particular ceiling portion 19, is achieved, wherein as a consequence of elastic formation of the counter-mounting part 29, in particular its U-leg as a consequence of the counter-mounting part 29 being supported on the beam 2, a resilient component to vertically upwards is achieved for locking the engagement fixing position.

The engagement grooves 65 and the engagement webs 67 are formed preferably saw tooth-like in a vertical cross section in such a manner that plugging the counter-mounting part 29 onto the pin 41 as a consequence of yielding overrunning of the engagement webs 67 through the engagement grooves 65 can be achieved but relocation in the direction to vertically upwards is blocked.

Alternatively, the pin 41 is provided with a mounting profiling 64 in the manner of a mushroom head (see exemplary embodiment Figures 29 to 31).

With vertical distance to the free end of the pin 41 in this case only one circumferential engagement groove 65 is preferably provided, with a radial groove depth of preferably 1 to 4 mm.

This mushroom head-like mounting profiling 64 is grasped by means of a counter-mounting part 29 which can be slid on in shifting direction a.

The counter-mounting part 29 is configured cap-like and comprises a receiving groove 68 for the mushroom head-like mounting profiling 64 directed in shifting direction a. The receiving groove 68 is matched in the cross section according to Figure 30 to the cross-sectional contour of the end region of the pin 41 to be received.

Furthermore, the receiving groove 68 viewed in shifting direction a is not formed continuously. The receiving groove 68 is rather open only on one side so that a stop region on the end side materialises.

Here, too, a spring component to vertically upwards for securing the fixing position is achieved as a consequence of the elastic configuration in particular of the counter-mounting part 29 as a consequence of the same being supported on the beam 2.

In the exemplary embodiment according to the Figures 32 and 33, the mounting part 17 is provided with a pin 14 carrying a mushroom head on the end side according to the embodiment described before. The end comprising the corresponding mounting profiling 64 projects vertically upwards out of the beam 2, for the corresponding grasping by the counter-mounting part 29.

The free end of the pin 41 is retained by a bearing part 69 which is formed on the bottom side positively and contour-matched on the beam 2, which is provided with a vertical bore 70 for the penetrating of the pin 41.

The engagement groove of the pin 41 extends in the assembly position above an upper contact surface of the bearing part 69.

The counter-mounting part 29 is present as a spring part 21, in particular as a sheet metal spring part, with a slot-like slot opening which in the assembly position is substantially directed to radially outside, which opens into a central receiving opening. The diameter of the receiving opening, as also preferably the clear width of the insertion opening, is substantially matched to the diameter of the pin 41 in the region of its engagement groove 65.

Fixing the roller 1 on the beam 2 takes place as a consequence of the spring part 71 being pushed on in shifting direction a, accordingly transversely to the vertical axis y. As a consequence of the free end of the pin 41 reaching through the insertion opening of the spring part 71, the mushroom head-like end in the region of the engagement groove 65 is grasped.

In the fixing position, the spring part 71 preferably supports itself only partially on the surface of the bearing part 69, in the process introducing a spring component to vertically upwards on the pin 41, in order to thereby secure the engagement fixing position.

In the exemplary embodiments according to the Figures 34 to 39, the base portion 20 of the mounting part 17 comprises axle mouldings 72 on the wall outside which with respect to the vertical axis y project radially to the outside.

These extend in assembly position according to Figure 34 transversely to a longitudinal extent of the beam 2 and in a vertical projection freely project over the outer surfaces of the side walls 18 on the beam side.

In the assembly position, the pin 41 on the mounting part side reaches through bores 46 and 47 of the beam 2 which with respect to the diameter are matched to the pin 41, for fixing the roller 1 in a positively joined manner transversely to the vertical axis y.

In a vertical cross section, the counter-mounting part 29 is configured substantially U-shaped. Further preferably, the counter-mounting part 29 is formed as a bent sheet metal part.

The U-shaped configuration is selected so that the counter-mounting part 29 in the fixing position according to figure 34 is supported over a large area, in vertical cross section preferably over the full area on the outer wall of the beam 2, in particular on the side walls 18 and/or on the ceiling portion 19.

The U-legs 73 are followed by side arms 74 which are in assembly position substantially orientated in longitudinal extent of the beam 2 and thus transversely to the vertical axis y. These side arms 74 preferably extend in a common plane with the respective associated U-leg 73.

In the region of the free marginal edge of each side arm 74 a slot-like entry recess 75 that is open at the edge is formed. Starting out from the free marginal edge of the side arm 74, the same is formed in the assembly position according to

Figure 34 starting out from the free marginal edge of the side arm 74 including an acute angle falling to a parallel to the vertical axis y of approximately 45°.

The counter-mounting part 29 offers a grip region 76 in particular in the retaining portion 43 connecting the U-legs 73.

For fixing the roller 1 on the beam 2, the counter-mounting part 29 is started in such a manner that the entry recesses 75 retain the axle mouldings 72 of the mounting part 17, after which a pivoting about the pivot axis u provided by the axle mouldings 72 and running parallel to the running wheel axis x a pivot movement of the counter-mounting part 29 out of a release position into a holding position is made possible, in which holding position the counter-mounting part 29 bears against beam 2. In this holding position, the roller 1 is held in vertical direction via the mounting part 17 as a consequence of the engagement of the axle mouldings 72 in the entry recesses 75. In horizontal direction, the holding is provided by the positive connection formation between pin 41 and beam 2.

The holding position according to Figure 34 is locked as a consequence of an engagement-fixing. To this end, the counter-mounting part 29 comprises in particular engagement lugs 77 which are cleared through a clearance, and which run parallel to the associated U-legs 73.

Preferably, two opposite engagement lugs 77 are assigned to the respective U-leg 73.

In the embodiment according to the Figures 34 to 37, an engagement protrusion 78 is moulded on on the inside of each engagement lug 77 preferentially stamped, for interaction with a correspondingly positioned bore 56 in the associated side wall of the beam 2.

An alternative configuration with respect to the engagement lugs 77 is shown in the embodiment according to the Figures 38 and 39. Here, the engagement lugs 77 are formed with respect to a vertical cross section beyond the vertical length of the beam 2, with a lower engagement portion 79 that is bent in to radially inside, which retains the beam 2 in the engagement fixing position, for interaction with the rounded base portion 20 of the beam 2.

The end portion of the pin 41 of the embodiment shown in the Figures 40 to 44 which in the assembly position freely projects over the beam 2 at the top comprises a secant-like engagement groove 80. The same extends with respect to a vertical cut through the engagement groove 80 according to the representation in Figure 43 including an acute angle β to the vertical axis y of approximately 45°, wherein the engagement groove 80 rises from radially outside to radially inside and thus slopingly opens itself towards the mounting forks 3.

The counter-mounting part 29 in vertical cross section is configured substantially U-shaped. Preferably, the counter-mounting part 29 is also formed as a bent sheet metal part in this case.

In the U-region of the counter-mounting part 29, this offers a handle region 76 for the pivot displacement of the counter-mounting part 29 from a release position into a holding position and if appropriate also vice versa.

On the U-shaped counter-mounting part 29 and assigned to the U-legs 73, a mounting web 81 each extending in a vertical plane in assembly position is formed.

The mounting webs 81 which run parallel to one another extend in the assembly position according to Figure 40 to vertically upward beyond the beam 2 and on the end side carry an axle 82 which freely extends between mounting webs 81.

The axle 82 has a diameter which is preferably matched to the clear width of the engagement groove 80 of the pin 41.

The geometrical pivot axis v of the axle 82 extends in particular in the assembled state and beyond this also during the course of the fixing, parallel to the running wheel axis x.

For fixing the roller 1 on the beam 2, the counter-mounting part 29 is started on the pin 41 in such a manner that the axle 82 engages in the engagement groove 80 on the pin side. As a consequence of pivot-displacing the counter-mounting part 29 about the pivot axis v in the direction of the beam 2, a lever action on the pin 41 in the direction of vertically upwards is achieved subject to simultaneous contact of the region of each mounting web 81 facing the axle 82 on the facing end face of the base portion 20 on the mounting part side, this subject to further migrating of the axle 82 within the engagement groove to radially inside.

Self-locking of the mounting position is achieved as a consequence of pivoting the counter-mounting part 29 over a so-called dead centre position, in which the vertical plane viewed in a longitudinal extent of the beam 2 preferably exceeds a punctiform contact of each mounting web 81 on the mounting part 17 over a line intersecting the pivot axis v of the axle 82 running parallel to the vertical axis y in pivot direction.

The U-region of the counter-mounting part 29 viewed in beam longitudinal extent lies against the beam 2 laterally offset to the pin 41 penetrating the beam 2.

The above explanations serve to elucidate the inventions which are encompassed altogether by the application, which further develop the prior art at least through the following feature combinations in each case independently, namely: A roller which is characterized in that the mounting part 17 is formed for the sliding fastening by way of moving the roller 1 in a plane, which based on an assembled state runs parallel to a horizontal plane extends in the running wheel axis x. A roller which is characterized in that the mounting part 17 forms a back-engagement acting perpendicularly to the shifting direction a. A roller which is characterized in that a counter-mounting part 29 is provided and that the counter-mounting part 29 in its contour is matched to the contour of the mounting part 17 that is provided in shifting direction a. A roller which is characterized in that the back-engagement contour 32 of the counter-mounting part 29 is smaller than the back-engagement contour 25 of the mounting part 17. A roller which is characterized in that the counter-mounting part 29 in the assembled state is accommodated in the mounting part 17 subject to placing a spring element 27 in-between. A roller which is characterized in that the spring element 27 during the course of a sliding relocation can be overrun by a counter-mounting part 29 subject to elastic deflection until an engagement opening 33 for the spring element 27 is achieved. A roller, which is characterized in that the spring element 27 is bonded or engaged with the mounting part 17. A roller 1 which is fastened to a beam 2, which are characterized in that the mounting part 17 and the counter-mounting part 29 are designed for the sliding fastening by moving the roller 1 in a plane which with respect to an assembled state runs parallel to a horizontal plane in which the running wheel axis x extends. A roller, which is characterized in that the fastening pin 35 which in an assembled state extends in a vertical direction is formed as a cone which tapers towards its free end. A roller, which is characterized in that a cone angle a of 0.5 to 2° is provided. A roller, which is characterized in that the cone extends over a vertical length of 30 to 50 mm. A roller, which is characterized in that the mounting part 17 is formed as a conical pin and the counter-mounting part 29 as a conical sleeve 37, wherein the cone angles a are matched to one another are preferably equal. A roller, which is characterized in that the mounting part 17 based on the assembled state, comprises horizontally running engaging mouldings 40, which can be overrun in vertical direction. A roller, which is characterized in that the engagement mouldings 40 are protruded by a pin 41 which extends in vertical direction. A roller, which is characterized in that the mounting part 17 forms two mounting walls 51 which extends substantially parallel to one another, are located opposite and left between a free space, which at each of their free ends comprise the engagement moulding 40. A roller, which is characterized in that the counter-mounting part 29 is formed U-shaped, wherein the U-legs 42 are designed for the snap-on engagement on joining the mounting part 17 and the counter-mounting part 29. A roller, which is characterized in that between the U-legs 42 a sleeve 45 which is open towards the free end of the U-leg 42 extends for receiving a pin 41 formed on the mounting part 17. A roller, which is characterized in that the U-legs 42 of the counter- mounting part 29 overlap the beam 2. A roller, which is characterized in that the pin 41 and the sleeve 45 penetrate the beam 2. A roller, which is characterized in that the U-legs 42 in the assembled state are deflected for achieving an elastic preload. A roller, which is characterized in that the counter-engagement mouldings 44 of the counter-mounting part 29 face towards the inside. A roller, which is characterized in that the counter-engagement mouldings 44 of the counter-mounting part 29 face to the outside. A roller, which is characterized in that the counter-mounting part 29 is formed hook-shaped in cross section, wherein a hook end comprises a counterengagement moulding 44 for interacting with the mounting part 17 and the other hook end is formed for the positive connection interaction with the beam 2. A roller, which is characterized in that the mounting part is formed as a closed shackle 53 with a shackle opening that is horizontally accessible in the assembled state. A roller, which is characterized in that two shackles 53 which are spaced behind one another and with respect to one another in horizontal direction. A roller, which is characterized in that the mounting part 17 is formed as a closed shackle 53, wherein the beam 2 penetrates the shackle opening and the counter-mounting part 29 interacts with the mounting 17 in a positively joined manner, wherein the counter-mounting part 29 is engaged on the beam 2. A roller, which is characterized in that the mounting part 17 comprises a plurality of mounting pins 61 which in the assembled state are orientated vertically and one or more engagement mouldings acting in vertical direction are provided. A roller, which is characterized in that four mounting pins 61 are formed, wherein the engagement mouldings extend between two mounting pins 61 and located opposite. A roller, which is characterized in that the mounting part 17 comprises a plurality of mounting pins 61 which in the assembled state are orientated vertically, which extend outside the beam 2 and in that the counter-mounting part 29 is provided as engagement part that is formed U-shaped for engaging over the beam 2. A roller, which is characterized in that the counter-mounting part 29 forms mounting holes 59 for the mounting pins 61 of the mounting part 17. A roller, which is characterized in that the mounting part 17 is designed U-shaped with mounting walls formed by the U-legs, wherein on a mounting wall 51 a shackle 63 is hinged, which is formed for the engagement connection with the opposite mounting wall 51 subject to closing an opening through the mounting walls 51 which in the assembled state is directed vertically upwards. A roller, which is characterized in that the fastening pin which in an assembled state extends in vertical direction comprises a mounting profiling 64 which extends in circumferential direction. A roller, which is characterized in that the fastening pin assigned to its free end comprises one or more engagement grooves 65 which are preferentially formed circumferentially. A roller, which is characterized in that the counter-mounting part 29 is substantially formed U-shaped, wherein on opposite faces of the U-legs 42 mounting mouldings 66 are formed, which engage in a mounting profiling 64 of the mounting part 17. A roller, which is characterized in that the assembled state is locked through an elastic formation of the counter-mounting part 29. A roller, which is characterized in that the counter-mounting part 29 is a spring element 71, which subject to elastic deformation supports itself on the beam. A roller, which is characterized in that the mounting part 17 comprises a pin 41 which in the assembled state extends in vertical direction, which penetrates the beam 2 and in that in the interaction of the pin 41 with the counter-mounting part 29 is formed outside of the beam 2. A roller, which is characterized in that the counter-mounting part 29 interacts at least with one engagement groove 65 assigned to the free end of the pin 41 by sliding in a direction transversely to the extent direction of the pin 41. A roller, which is characterized in that the mounting part 17 comprises positive connection mouldings which contact the beam 2 on the outside. A roller, which is characterized in that the counter-mounting part 29 comprises positive connection mouldings which contact the beam 2 on the outside. A roller, which is characterized in that the counter-mounting part 29 supports itself on a bearing part 69, wherein the bearing part 69 supports itself on the beam 2. A roller, which is characterized in that the fastening pin which in the assembled state extends in vertical direction comprises a secant-like engagement groove 80, which, in a view reflecting the cross-sectional profile of the engagement groove 80, opens unsubjects to inclusion of an acute angle β, directed towards the mounting fork 3. A roller, which is characterized in that the mounting part 17 is formed as a pin 41 which in the assembled state extends in vertical direction and in that the pin 41 penetrates the beam 2, wherein the pin 2 comprises a secant-like engagement groove 80, wherein furthermore the engagement groove 80 is penetrated by an axis of the counter-mounting part 29, which counter-mounting part 29 is pivotable about the axle 82 and in the fastening state is held by way of contact with the mounting part 17 and subject to overlapping the beam 2. A roller, which is characterized in that the counter-mounting part 29 forms a handle region 76 formed U-shaped, which for the assembly provides a pivot handle. A roller, which is characterized in that the fastening pin which in an assembled state extends in vertical direction comprises axle mouldings 72 in the foot region which extends transversely to the longitudinal extent of the fastening pin. A roller, which is characterized in that the mounting part 17 is formed as a fastening pin which in the assembled state extends in vertical direction and the fastening pin in the foot region comprises axle mouldings 72, wherein the fastening pin penetrates the beam 2, wherein furthermore the counter-mounting part 29 is formed U-shaped, wherein on the U-legs 73 entry recesses 75 that are open on one side are formed, for interaction with the axle mouldings 72 of the mounting part 17. A roller, which is characterized in that the counter-mounting part 29 is pivotable by turning about the axle mouldings 72 between a release position and a holding position. A roller, which is characterized in that the counter-mounting part 29 comprises one or more engagement mouldings, for interaction with the beam 2 in the assembled state.

Reference List 1 Roller 25 Back-engagement contour 2 Beam 26 Recess 3 Mounting fork 27 Spring element 4 Overlap portion 28 Spring lug 5 Mounting fork leg 29 Counter-mounting part 6 Running wheel 30 Connecting surface 7 Axle body 31 Back-engagement portion 8 Ball retainer 32 Back-engagement contour 9 Ball retainer 33 Engagement opening 10 Ball groove 34 Deflection bevel 11 Ball groove 35 Fastening pin 12 Horizontal portion 36 Collar 13 Row of balls 37 Conical sleeve 14 Row of balls 38 Sleeve ceiling 15 Opening 39 Engagement portion 16 Fastening portion 40 Engagement moulding 17 Mounting part 41 Pin 18 Sidewall 42 U-leg 19 Sealing portion 43 Retaining portion 20 Base portion 44 Counter-engagement moulding 21 Slide-on portion 45 Sleeve 22 Base portion 46 Bore 23 Wall portion 47 Bore 24 Back-engagement portion 48 Rundown bevel 49 Compression spring 73 U-leg 50 Clearance 74 Side arm 51 Mounting wall 75 Entry clearance 52 Side arm 76 Handle region 53 Shackle 77 Engagement lug 54 Engagement leg 78 Engagement protrusion 55 Engagement protrusion 79 Lower engagement portion 56 Bore 80 Engagement groove 57 Leg portion 81 Mounting web 58 Engagement portion 82 Axle 59 Receiving bore 60 Engagement leg 61 Mounting pin 62 Recess 63 Shackle 64 Mounting profiling a Shifting direction 65 Engagement groove u Pivot axis 66 Mounting moulding v Pivot axis 67 Engagement web x Running wheel axle 68 Receiving groove y Vertical axis 69 Bearing part z Hinge axis 70 Bore 71 Spring element a Cone angle 72 Axle moulding β Angle

Claims

1. A roller (1), in particular trestle or steering roller, with a running wheel (6) comprising a running wheel axle (x), which is received in a mounting fork (3), wherein the mounting fork (3) forms an overlap portion (4) with respect to the running wheel (6) and preferably on the overlap portion (4) and preferably on the top a mounting part (17) is provided, characterized in that the mounting part (17) and/ or a counter-mounting part (29) are formed for the sliding fastening.

2. The roller according to claim 1, characterized in that the mounting part is formed by moving the roller (1) in a plane which with respect to an assembled state runs parallel to a horizontal plane in which the running wheel axle (x) extends.

3. The roller according to claim 2, characterized in that the mounting part (17) forms a back-engagement which acts perpendicularly to the shifting direction (a).

4. The roller according to any one of the preceding claims, characterized in that the counter-mounting part (29) in its contour is matched to the contour of the mounting part (17) provided in shifting direction (a).

5. The roller according to any one of the preceding claims, characterized in that the back-engagement contour (32) of the counter-mounting part (29) is smaller than the back-engagement contour (32) of the mounting part (17).

6. The roller according to any one of the preceding claims, characterized in that the counter-mounting part (29) in the assembled state is accommodated in the mounting part (17) subject to placing a spring element (27) in-between.

7. The roller according to any one of the preceding claims, characterized in that the spring element (27) during the course of a sliding displacement is over runnable by the counter-mounting part (29) subject to elastic deflection until an engagement opening (33) for the spring element (27) is reached.

8. The roller according to any one of the preceding claims, characterized in that the spring element (27) is bonded to or engaged with the mounting part (17).

9. The roller according to any one of the preceding claims, characterized in that the roller is fastened on a beam (2).

10. The roller according to any one of the preceding claims, characterized in that the mounting part (17) and/or the counter-mounting part (29) are formed for the sliding fastening through movement of the roller (1) in a plane, which with respect to an assembled state runs parallel to a horizontal plane in which the running wheel axle (x) extends.

11. The roller according to any one of the preceding claims, characterized in that on the overlap portion (4) at the top a fastening pin (35) is provided.

12. The roller according to any one of the preceding claims, characterized in that the fastening pin (35) which after an assembled state extends in a vertical direction is formed as a cone which tapers towards its free end.

13. The roller according to claim 9, characterized in that a cone angle (a) of 0.5 to 2° is provided.

14. The roller according to any one of the claims 9 to 10, characterized in that the cone extends over a vertical length of 30 to 70 mm.

15. The roller according to any one of the preceding claims, characterized in that the mounting part (17) is formed as a conical pin and the counter-mounting part (29) as a conical sleeve (37), wherein the cone angles (a) are matched to one another, preferably are equal.

16. The roller according to the features of the preamble of claim 1, characterized in that the mounting part (17) based on the assembled state comprises horizontally running engagement and/or positive connection mouldings (40).

17. The roller according to claim 16, characterized in that the engagement and/or positive connection mouldings can be overrun for example in vertical direction.

18. The roller according to claim 16 or 17, characterized in that a pin which extends in vertical direction protrudes over engagement mouldings.

19. The roller according to any one of the claims 16 to 18, characterized in that the mounting part (17) forms two mounting walls (51) which extend substantially parallel to one another, are located opposite one another and between them leave a free space, which in each case comprise the engagement moulding (40) at their free ends.

20. The roller according to any one of the claims 16 to 19, characterized in that the counter-mounting part (29) is formed U-shaped, wherein the U-legs (42) are formed for the snap-on engagement on joining the mounting part (17) and the counter-mounting part (29).

21. A roller fastened to a beam according to claim 20, characterized in that between the U-legs (42) a sleeve (45) which is open towards the free end of the U-legs (42) extends for receiving a pin (41) that is formed on the mounting part (17).

22. The roller that is fastened to a beam according to any one of the claims 20 or 21, characterized in that the U-legs (42) of the counter-mounting part (29) reach over the beam (2).

23. The roller that is fastened to a beam according to any one of the claims 20 to 22, characterized in that the pin (41) and the sleeve (45) penetrate the beam (2).

24. The roller that is fastened to a beam according to any one of the claims 20 to 23, characterized in that the U-legs (42) in the assembled state are deflected for achieving an elastic preloading.

25. The roller that is fastened to a beam according to any one of the claims 20 to 24, characterized in that counter-engagement mouldings (44) of the countermounting part (29) face towards the inside.

26. The roller that is fastened to a beam according to any one of the claims 20 to 25, characterized in that counter-engagement mouldings (44) of the countermounting part (29) face towards the outside.

27. The roller that is fastened to a beam according to any one of the claims 20 to 26, characterized in that the counter-mounting part (29) is formed hook-like in cross section, wherein a hook end comprises a counter-engagement moulding (44) for interaction with the mounting part (17) and the other hook end is formed for the positive connection interaction with the beam (2).

28. The roller that is fastened to a beam according to any one of the claims 16 to 27, characterized in that the mounting part is formed as a closed shackle (53) with a shackle opening that is horizontally accessible in the assembled state.

29. The roller that is fastened to a beam claim 28, characterized in that two shackles (53) which are spaced in horizontal direction behind one another and relative to one another are provided.

30. The roller according to any one of the claims 16 to 29, characterized in that in the event of a fastening of the roller on a beam (2) the beam (2) penetrates the shackle opening and the counter-mounting part (29) interacts in a positively joined manner with the mounting part (17), wherein the counter-mounting part (29) is engaged with the beam (2).

31. The roller that is fastened to a beam according to one of the claims 16 to 30, characterized in that the mounting part (17) comprises a plurality of mounting pins (61) which in the assembled state are orientated vertically and one or more engagement mouldings acting in vertical direction are provided.

32. The roller according to claim 31, characterized in that four mounting pins (61) are formed, wherein the engagement mouldings extend between two mounting pins (61) and located opposite.

33. The roller according to any one of the claims 16 to 32, characterized in that in the event of the fastening to a beam (2), the mounting part (17) comprises a plurality of mounting pins (61) which in the assembled state are orientated vertically, which extend outside the beam (2) and in that the counter-mounting part (29) is provided as an engagement part that is formed U-shaped for engaging over the beam (2).

34. A roller that is fastened to a beam according to any one of the claims 16 to 33, characterized in that the counter-mounting part (29) forms mounting holes (59) for the mounting pins (61) of the mounting part (17).

35. A roller according to any one of the claims 16 to 34, characterized in that the mounting part (17) is formed U-shaped with mounting walls (51) formed by the U-legs (42), wherein on a mounting wall (51) a shackle (63) is hinged, which for the engagement connection with the opposite mounting wall (51) subject to closing an opening through the mounting walls (51) in the assembled state which is directed vertically upwards, is formed.

36. The roller according to any one of the claims 16 to 35, characterized in that the fastening pin which in an assembled state extends in vertical direction comprises a mounting profiling (64) which extends in circumferential direction.

37. The roller according to any one of the claims 16 to 36, characterized in that the fastening pin assigned to its free end comprises one or more engagement grooves (65) which are preferably formed circumferentially.

38. The roller according to any one of the claims 16 to 37, characterized in that the counter-mounting part (29) is substantially formed U-shaped, wherein on opposite faces of the U-legs (42) mounting mouldings (66) are formed, which engage in a mounting profiling (64) of the mounting part (17).

39. A roller that is fastened to a beam according to any one of the claims 16 to 38, characterized in that the assembled state is locked by an elastic formation of the counter-mounting part (29).

40. The roller according to any one of the claims 16 to 39, characterized in that in the case of the fastening to a beam the counter-mounting part (29) is a spring element (71) which subject to elastic deformation supports itself on the beam.

41. The roller according to any one of the claims 16 to 40, characterized in that the mounting part (17) comprises a pin (41) which in the assembled state extends in vertical direction, which penetrates the beam (2) and in that the interaction of the pin (41) with the counter-mounting part (29) is formed outside the beam (2).

42. The roller according to any one of the claims 16 to 41, characterized in that the counter-mounting part (29) by shifting in a direction transversely to the extent direction of the pin (41) interacts with one engagement groove (65) assigned to the free end of the pin (41).

43. The roller according to any one of the claims 16 to 42, characterized in that the mounting part (17) comprises positive connection mouldings which contact the beam (2) on the outside.

44. The roller according to any one of the claims 16 to 43, characterized in that the counter-mounting part (29) comprises positive connection mouldings which contact the beam (2) on the outside.

45. The roller according to any one of the claims 16 to 44, characterized in that the counter-mounting part (29) supports itself on a bearing part (69), wherein the bearing part (69) supports itself on the beam (2).

46. The roller according to any one of the claims 16 to 45, characterized in that the fastening pin which in an assembled state extends in vertical direction comprises a secant-like engagement groove (80) which in a view that reflects the cross-sectional profile of the engagement groove (80) opens directed to the mounting fork (3) subject to including an acute angle (β).

47. The roller according to any one of the claims 16 to 46, characterized in that the mounting part (17) is formed as a pin (41) which in the assembled state extends in vertical direction and that that pin (41) penetrates the beam (2), wherein the pin (41) has a secant-like engagement groove (80), wherein furthermore the engagement groove (80) is penetrated by an axle (82) of the counter-mounting part (29), which counter-mounting part (29) is pivotable about the axle (82) and in the fastening state is held bearing against the mounting part (17) and subject to engaging over by the beam (2).

48. The roller according to any one of the claims 16 to 47, characterized in that the counter-mounting part (29) forms a handle region (76) which is formed U-shaped, which for the assembly offers a pivot handle.

49. The roller according to any one of the claims 16 to 48, characterized in that the fastening pin which in an assembled state extends in vertical direction in the foot region comprises axle mouldings (72) which extend transversely to the longitudinal extent of the fastening pin.

50. The roller according to any one of the claims 16 to 49, characterized in that the mounting part (17) is formed as a fastening pin which in the assembled state extends in vertical direction and the fastening pin comprises axle mouldings (72) in the foot region, wherein the fastening pin penetrates the beam (2), wherein furthermore the counter-mounting part (29) is formed U-shaped, wherein on the U-legs (73) entry clearances (75) that are open on one side are formed, for interaction with the axle mouldings (72) of the mounting part (17).

51. The roller according to any one of the claims 16 to 50, characterized in that the counter-mounting part (29) is pivotable by turning about the axle mouldings (72) between a release position and a holding position.

52. The roller according to any one of the claims 16 to 51, characterized in that the counter-mounting part (29) comprises one or more engagement mouldings for interaction with the beam (2) in the assembly position.