EP0855989B2 - Running wheel block - Google Patents

Abstract

A running wheel block, including a housing having at least one connecting surface for connection to a supporting structure, an inwardly directed rotary bearing holding hub arranged in the housing, a rotary bearing mounted on the hub, and a running wheel mounted in the rotary bearing so that a section of its running surface projects from the housing toward at least one side. The housing is open on a side opposite to the holding hub. The running wheel encompasses the holding hub and is insertable onto or into the rotary bearing from the open side.

Description

The invention relates to impeller blocks according to the preamble of claim 1.

A generic impeller block is manufactured and sold by Mannesmann Demag Fördertechnik AG under the name "RS". The known impeller block is also known from DE 31 34 750 C2.

This known impeller block is formed from two welded together or otherwise connected halves of the bearing housing and has inwardly pressed rotary bearing seating surfaces for bearings in which the hub of the impeller is supported. This close to the hub bearing seating surfaces directed to the hub abutment surfaces for the bearing, and the impeller extends with its hub up over the bearings and is supported directly on the housing, and the hub also has on its two-sided outer rings annular grooves on the front sides of the Bearing snap rings and a receiving opening with an internal toothing for external teeth of a drive shaft.

The construction described has been proven in practice for years However, there is still the requirement of cost minimization and functional improvement.

A disadvantage of the known impeller block that the exchange of the impeller of the impeller block in its entirety from him supporting frame, suspension, structure or the like. must be completely solved.

After replacing the impeller, the entire impeller block is again attached to the structure - as in the initial assembly - by means of screws But the impeller block must be aligned in its position relative to the structure with the other wheels, so that the axis of rotation of the impeller perpendicular to the impeller, on which rolls the impeller runs. This assembly process is time-consuming due to the complex alignment, which extends the downtime of the entire machine, and therefore also costly. If the alignment process is not performed, there is a risk that the wheels by scraping on the Laufradbahn schrota (rub) and thereby wear out faster. Furthermore, there is the danger in the application of a bridge crane that the running behavior of the bridge crane is sensitive disturbed by skew, tapping and flange wear. In addition, lateral forces occur with increasing skew angle, or the like. burden beyond the operating stress. This problem is described in detail in DIN 15018.

Depending on the application (load capacity, type of vehicle, type of crane, etc.), the design of the impeller blocks takes place. Here, manufacturing costs, assembly times, etc. are of considerable importance.

In FR-A-2667543 an impeller block is described with a housing consisting of two housing halves which together form the connection surface on one side of the housing. This impeller block must be completely detached from the structure and replaced for replacement of wearing parts. This has the disadvantage that after re-attachment of the wheel block a new orientation and adjustment is required.
EP-A-04 06 922 discloses a wheel block in which a peripheral wall part realizes the distance between the side walls. However, in this Radblockausführung none of the side walls in the installed state can be dismantled. In addition, this Umpfangswandteil is a normal housing wall that is fixed, ie not detachable, connected to the side walls

In contrast, EP-A-065 63 13 describes a so-called corner bearing of an impeller with two directly adjacent open sides. This does not correspond to the housing of a wheel block. Moreover, the cover plate is also not, so certainly not in the installed state, of one of the side walls solvable. Once again, the cover plate is no more than a familiar to the expert outer wall of an impeller cover.

DE-A-4 235 345 discloses an impeller block, in which the two receiving hubs are formed in each case by projecting into the housing interior parts of two opposing annular body, which can be inserted from the outside into the insertion openings provided in the housing and at which the pivot bearing coaxially are. This makes it possible, after removing the ring body, remove the impeller and the bearings down from the impeller block, without releasing it from the structure.

Although a known from DE-A-4,316,201 impeller block consists of two housing halves, which are detachably connected to each other, but of which not only a single housing half can be solved in the installed state. The impeller block must be completely detached from the structure and replaced to replace wearing parts. DE 4031685 C discloses a Laufradblöck of two housing schools of injection molding, which are draff and / or positively connected with each other.

The present invention has for its object to minimize manufacturing and assembly costs by an advanced design of a wheel block and to increase the utility of the impeller block thereby, that the disadvantages of known impeller blocks are avoided.

The stated object is achieved according to the invention in a first variant with the features of claim 1. The present invention enables the Replacing the impeller and / or the bearing, without the housing must be solved by the structure. This eliminates the time- and cost-intensive alignment process following the replacement of wearing parts, the housing is reusable and remains aligned on the structure or the like., As long as desired.

In addition, there is the advantage, in addition to releasable connection means to use insoluble, because the block-shaped housing of the respective support or chassis no longer needs to be solved. A further advantage is that the newly developed impeller block can be completely disassembled and recycled into its components. This is particularly advantageous with regard to increasing disposal costs and the disposal of materials separate disposal.

According to further features it is provided that the Kopfarischlußfläche and / or a cheek surface and / or a face connection surface is divided into overlying and non-resting partial surfaces. As a result, the introduction of force is defined as before, and it is saved in the manufacture of the impeller block considerably in terms of cutting performance and cutting volume.

It is also advantageous that a resting partial surface is undivided, i. has no parting line. The flatness of the surface is correspondingly more accurate with a homogeneous material and smaller partial surfaces as connecting surfaces than with several or large partial surfaces. Furthermore, defined forces are introduced into the connecting structure via the smaller partial surfaces. This allows an optimized design of the connecting structure with known power flow.

The object is achieved in a second variant with the features of claim 4.

This variant of the invention allows the replacement of the impeller and / or the bearing, without the housing must be detached from the structure. This eliminates the time- and cost-intensive alignment process following the replacement of wearing parts, the housing is reusable and remains aligned on the structure or the like., As long as this is desired. There is also the advantage, in addition to releasable connection means to use also insoluble, because the block-shaped housing of the relevant structure, support or chassis no longer needs to be solved. Further advantages result from the fact that both the cover and the spacers can be manufactured as inexpensive mass-produced, so that the unit costs can be significantly reduced at correspondingly high quantities. A further advantage is that the newly developed impeller block can be completely disassembled and recycled into its components. This is particularly advantageous with regard to increasing disposal costs and the disposal of materials separate disposal.

In an embodiment of the invention, it is provided that two separate spacers are arranged in front of and behind the impeller seen in the direction of travel. These are relatively light pieces with plane-parallel side surfaces, which can be made correspondingly advantageous.

The stated object is achieved according to the invention in a third variant with the features of claim 6. Such a mounted impeller block remains aligned even when removing the sliding and rolling bearing and / or the impeller because both the sliding and rolling bearings and the impeller can be deducted to one side, to the sufficient space for the expansion movement is present. This variant of the invention therefore allows the replacement of the impeller and / or the bearing, without the housing must be detached from the structure. This eliminates the time- and cost-intensive alignment process following the replacement of wearing parts, the housing is still usable and remains aligned on the structure or the like., As long as desired.

In addition, there is the advantage, in addition to releasable connection means to use insoluble, because the block-shaped housing of the respective support or chassis no longer needs to be solved. In an embodiment of the invention, the housing is made einstükkig and down and to a cheek side open.

For a montage friendly storage is proposed that an axially extending to the pivot bearing, the pivot bearing receiving asymmetric to the width-center plane formed housing hub is provided and that the impeller also with an reaching from the open cheek of the housing forth in the housing hub asymmetrically molded, with the shaft connected impeller hub is provided. These measures also saves considerable space, with additional material savings on the impeller and on the housing of the impeller block is achieved. In addition, a particularly simple impeller geometry results for non-driven wheels. The respective application depends, for example, on the manufacturing processes available.

Fig. 1 A

eine Vorderansicht des gesamten Radblockes in Richtung auf eine Wange,

Fig. 2A

die zu Fig. 1A gehörende Seitenansicht auf eine Stirnanschlußfläche,

Fig. 3A

eine Draufsicht auf die Kopfanschlußfläche,

Fig. 4A

einen Schnitt AB - AB gemäß Fig. 1A,

Fig. 5A

einen Querschnitt gemäß Schnittangabe AC-AC in Fig. 1A,

Fig. 6A

einen Querschnitt gemäß Schnittangabe AA - AA in Fig. 1A,

Fig. 7A

eine Ansicht von unten gegen den Radblock,

Fig. 8A

eine Seitenansicht mit Blick auf die Wange des Radblocks, der an einem Träger, Fahrrahmen o.dgl. befestigt ist,

Fig. 9A

einen Querschnitt entsprechend der Schnittangabe AD - AD aus Fig. 8A,

Fig. 10A

einen Querschnitt in Höhe der Tragbolzen bei einer alternativen Ausführungsform des Trägers, Fahrrahmens o.dgl.,

Fig. 1B

eine Seitenansicht auf den Laufradblock,

Fig. 2B

die gleiche Seitenansicht wie Fig. 1B, teilweise aufgeschnitten,

Fig.3B

einen axialen senkrechten Querschnitt durch ein Ausführungsbeispiel des Laufradblocks,

Fig. 4B

einen axialen senkrechten Querschnitt durch ein anderes Ausführungsbeispiel des Laufradblockes,

Fig. 5B

denselben Querschnitt wie die Figuren 3B und 4B für ein weiteres Ausführungsbeispiel,

Fig. 6B

einen Querschnitt durch den Laufradblock in einer Ebene eines Abstandshalters,

Fig. 7B

einen Querschnitt durch die Befestigung des Laufradblocks an einem Tragwerk mittels Tragbolzen,

Fig. 8B

eine Seitenansicht wie die Figuren 1 B und 2B mit versetzten Verbindungsmitteln,

Fig. 9B

einen Mittel-Querschnitt gemäß Fig. 8B und

Fig. 10B

ein Ausführungsbeispiel für die Befestigung des Laufradblockes an einem Tragwerk, einem Träger, Fahrrahmen o.dgl.

Fig. 1C

eine Vorderansicht des gesamten Radblockes in Richtung der Wellenachse,

Fig. 2C

die zu Fig. 1C gehörende Draufsicht,

Fig. 3C

eine Stirnansicht des Laufradblockes und

Fig. 4C

einen senkrechten Querschnitt in der Mittenebene der Fig. 3C.

An embodiment of the invention is illustrated for each variant of the invention in the drawing and will be described in more detail below. Show it

Fig. 1 A

a front view of the entire wheel block towards a cheek,

Fig. 2A

the side view belonging to FIG. 1A on a face connection surface,

Fig. 3A

a top view of the head pad,

Fig. 4A

a section AB - AB according to FIG. 1A,

Fig. 5A

a cross section according to section AC-AC in Fig. 1A,

Fig. 6A

a cross section according to section AA - AA in Fig. 1A,

Fig. 7A

a view from below against the wheel block,

Fig. 8A

a side view overlooking the cheek of the wheel block, or the like on a support, running frame. is attached,

Fig. 9A

a cross section corresponding to the section AD - AD of FIG. 8A,

Fig. 10A

a cross section in the amount of the support bolts in an alternative embodiment of the carrier, traveling frame or the like.,

Fig. 1B

a side view of the wheel block,

Fig. 2B

the same side view as FIG. 1B, partially cut away,

3B

an axial vertical cross-section through an embodiment of the impeller block,

Fig. 4B

an axial vertical cross section through another embodiment of the impeller block,

Fig. 5B

the same cross-section as the figures 3B and 4B for a further embodiment,

Fig. 6B

a cross section through the impeller block in a plane of a spacer,

Fig. 7B

a cross section through the attachment of the impeller block to a supporting structure by means of supporting bolts,

Fig. 8B

a side view as the figures 1 B and 2B with offset connecting means,

Fig. 9B

a central cross-section of FIG. 8B and

Fig. 10B

an embodiment of the attachment of the impeller block to a supporting structure, a carrier, driving frame or the like.

Fig. 1C

a front view of the entire wheel block in the direction of the shaft axis,

Fig. 2C

the plan view belonging to FIG. 1C,

Fig. 3C

an end view of the impeller block and

Fig. 4C

a vertical cross section in the center plane of Fig. 3C.

An embodiment of the first variant of the invention is described below:

An impeller block (Figures 1 A and 2A) has a housing 101 in which pivot bearing seating surfaces 102 (see Figure 6A) for sliding and / or rolling bearings 103 are provided for receiving an impeller 104 which projects generally downwardly. For the purpose of removing the sliding and / or roller bearings 103 and / or the impeller 104, the housing 101 can be dismantled and reconnected into housing parts at least on one side, a support or travel frame 105 (see FIGS. 8A to 10A) determining the construction direction. The impeller block is attached to such a support or traveling frame 105 as will be described later.

The housing 101 is block-shaped, i. viewed from the side and from top or bottom either square or rectangular or trapezoidal. The basic shape can be like a cuboid.

This block-shaped housing 101 has at least one the carrying capacity (of the impeller 104) receiving, approximately on the housing width 106 and the impeller width 107 extending head pad 108, on the side 108a, the connecting means 109 (eg connecting screws 109a, nuts, bolts, rivets u. Like.) - See. Fig. 8A - between the housing 101 and the carrier to be connected to the wheel block support, traveling frame 105 or the like. are arranged.

The head connection surface 108 and / or a cheek surface 110 and / or an end connection surface 111 are subdivided into resting and non-resting partial surfaces 112 and 113 (compare FIGS. 2A and 7A). As a result, the introduction of force is defined as previously and it is saved in the manufacture of the impeller block considerably in terms of cutting performance and cutting volume. The resting partial surfaces 112 take over the respective carrying capacity or partial load. In this case, an overlying partial surface 112 is itself undivided, although a plurality of such resting partial surfaces 112 may be present. This system of the resting partial surfaces 112 and the non-resting partial surfaces 113 makes the position of the entire wheel block statically determined after its adjustment to the support or traveling frame 105, safely and clearly. This occupied position can therefore be maintained before, during and during the replacement of the sliding and / or roller bearings practically for life. The advantage here is that an overlying part surface 112 is undivided, ie has no parting line The flatness of the surface is correspondingly more accurate in a homogeneous material and smaller sub-areas as pads accordingly than with multiple or large sub-areas. Furthermore, defined forces are introduced into the connecting structure via the smaller partial surfaces. This allows for an optimized design of the connecting structure with known power flow.

For the replacement process, a detachable cover 114 is now attached to at least on one side (cheek surface 110) of the housing, which is centered in the operating position to the pivot bearing seats 102. As a result, a lateral expansion of the bearing and / or the impeller is possible. The lateral expansion reduces the disassembly and assembly costs of the impeller in that now the supporting structure, the carrier or the running frame only has to be raised by the flange height of the impeller.

For reasons of weight, wherein the carrying capacity is fully retained, the head pad 108 has one or more openings 115. Advantageously, namely by the impeller radius can be increased by more than the thickness of the upper plate boundary. A further advantage is that the breakthrough dirt deposits prevented even in the event that the housing with the open side from which protrudes the impeller, opposite to the direction of gravity has upwards. The breakthroughs 115 can be closed by means of closure pieces 116, which are made of materials with a low specific weight (see Fig. 3A). The shutters prevent the ingress of dirt or other contaminants even in the event that the housing with the open side, on which the impeller protrudes, points in the direction of gravity downwards.

The head connection surface 108 is provided with at least one recess 117 (two recesses are shown in FIG. 3A) which runs parallel to the rotor axis 118. As a result, prefabricated bolts can be used, with an inaccurate hole pattern of the counterpart is possible without this leads to disadvantages, because the bolts can move in the recess and adapt to the inaccurate hole pattern. The recess 117 may be designed as a groove guide 119, as a through hole or as a threaded hole 120; depending on the accuracy of the connection, the appropriate Durchgangsart can be selected. As shown (Fig. 3A) are in the groove guides 119 locknuts 121 for connection means 109, which consist of the connecting screws 109 a. This embodiment thus serves to facilitate the connection and the alignment during the initial assembly between the supporting structure, carrier, running frame or the like. and the housing of the impeller block.

The housing 101 is constructed asymmetrically in the sense that the side cover 114 is provided for the reasons described above for a permanent attachment, wherein the housing width is a multiple of the thickness 114a of the lid 114. Such a cover has various advantages, because it is a simple, plate-shaped part can be designed differently. It is used to form locks, the cultivation of sensor elements and can be designed as an adapter for connection to a drive unit.

The width 106 of the housing 101 may be depending on the size and carrying capacity of the impeller 104 is two to forty times the thickness 114a of the lid 114, wherein the lid 114 is set lower to the head pad 108 and thus under no circumstances assumes load-bearing capacity and disassembled for easy in the load state can be. A slight disassembly of the lid is achieved by this.

The lid 114 is for this purpose also designed to jump back to a face connection surface 111 and thus does not interfere with a lateral attachment for the attachment of the impeller block in a different way.

The lid 114 also has molded center hubs 122 which engage corresponding bores 123 of the housing 101 to provide a precise location and to avoid errors in storage and to ensure advantageous transmission of force.

The cross section 114b of the lid 114 thickens outside the impeller diameter 104b. Countersinks 138 for screw heads 139 and nuts 140 are incorporated in these thickenings. In these areas, fastening means, spacing means and the like. be attached. The material required for this purpose is sufficiently available at these points. The countersinks 138 may have hexagonal shape 141, alternately using either a hexagon head 142 (FIG. 1A) or a hex nut 143 (FIG. 4A).

The center hubs 122 are equipped with internal bores 102104. The inner bores 102104 receive support bolts 125 and extend concentrically to the centering hub 122. This design provides good power transmission for supporting the reaction forces in the housing of the impeller block.

The centering hubs 122, the corresponding bores 123 in the housing 101 and the inner bores 102104 extend with their common axis 126 each outside the circumference 104a of the impeller 104 (see Fig. 1A) parallel to the impeller axis 118 (Figure 10A). Such a system is correspondingly low in tolerance and therefore economical to produce.

In the housing 101, a receiving hub 128 (FIG. 6A) for a pivot bearing 129 for receiving the inner ring 129a or the outer ring 129b is integrally formed on the side 114 opposite the cover 114. As a result, the pivot bearing tolerances are easily brought into its exact location, which is made possible by appropriate manufacturing technology.

A receiving hub 130 (FIG. 6A) for a rotary bearing 129 for receiving the inner ring 129a or the outer ring 129b in analogous form to the housing 101 is then integrally formed on the cover 114.

On the head connection surface 108 (FIG. 3A) and / or on the outer end connection surfaces 111 (FIG. 2A) of the housing 101, receiving means 131 for the connection means 109 are arranged. By the receiving means an adjustment of the connecting means 109 can be made according to the setting of the entire impeller block. In addition to the groove guides 119 provided on the head connection surface 108 (FIG. 10A) with locknuts 121, there are also recesses 132 on the end connection surfaces 111 of the housing (FIG. 2A). As a result, additional elements can be connected without occupying the end connection surface definitively. It is also possible, or the like, the whole wheel block at this end connection surface of the housing to a support or running frame. to join.

The recesses 117 and 132 (FIGS. 2A and 3A) are each equipped as groove guides 119 and designed either as a through-hole 133 or as a threaded bore 120.

The housing 101 has, in addition to the head pad 108 opposite to an outer surface 134 which is shown in Fig. 7A in view. Therefore, other aggregates, such as guide rollers, measuring devices can also be connected to this partial connection surface etc. are connected. This sub-connection surface can also be designed so that the entire impeller block can be connected to this surface with the structure, support or chassis. This outer surface 134 is divided into partial pads 135.

In contrast, the outer end abutment surfaces 111 of the housing 101 are undivided (FIG. 2A) and each represent a receiving surface 136 for carrying forces.

The lid 114 is positively connected to the housing 101 via the centering hubs 122 (Figure 5A) and frictionally connected via the connecting means 109, the connecting means 109 being e.g. consist of connecting screws 109a.

To avoid corrosion or to save weight, housing 101 and cover 114 may each be molded or molded from molten materials. Forging is also possible. The material may e.g. made of a light metal alloy to ensure that the component in question has a desired load capacity. As a material of high strength can also serve an iron alloy. At lower loads or load capacities, the material consists of plastifiable plastic. Higher load capacity of the wheel block results in materials made of composite material or of materials that form a composite material with other materials.

In Figures 9A and 10A it is clear that by the displaceability of the receiving means 131 in the groove guide 119 together with the connecting means 109, a permanent adjustment of the wheel block on the running frame or the carrier 105 or the like. can be created. According to FIG. 10A, the housing 101 is guided or held between the legs of a U-shaped carrier 105.

Hereinafter, an embodiment of the second variant of the invention will be described.

An impeller block (Figures 1B and 2B) has a housing 201 in which pivot bearing seating surfaces 202 (see Figure 3B) for sliding and / or rolling bearings 203 are provided for receiving a generally downwardly projecting impeller 204. For the purpose of removing the sliding and / or roller bearings 203 and / or the impeller 204, the housing 201 can be dismantled and reconnected at least on one side into housing parts, with a supporting structure, support, traveling frame 205 or the like. (see Figures 7B and 10B) determines the direction of removal. The impeller block is attached to such a structure, carrier or traveling frame 205, as will be described below.

The housing 201 is block-shaped, i. viewed from the side and from top or bottom either square or rectangular or trapezoidal. The basic shape can be like a cuboid.

This block-shaped housing 201 has at least one of the carrying capacity of the impeller 204 receiving, approximately on the housing width 201 a and the impeller width 204 a extending head pad 210, on the side connecting means 211 between the housing 201 and to be provided with the impeller block support structure, carrier, Driving frame 205 or the like. are arranged.

The housing 201 is composed of lids 206 and 207 arranged on both sides and at least one spacer 209 connecting both lids 206, 207 to a peripheral section 208 with a head contact surface receiving the bearing force and extending onto the housing width 201a or the impeller width 204a (FIG. 3B) 210 formed. At the head pad 210, the connecting means 211 to a supporting structure, support, driving frame 205 or the like. intended. The lids 206, 207 bear on or in lid hubs 206a, 207a on both sides pivot bearings 203, which terminate approximately with the width 204a of the impeller 204 or an impeller hub 204b.

As viewed in the direction of travel 212, two separate spacers 209 are arranged in front of and behind the impeller 204 (FIGS. 1B and 2B). These are relatively light pieces with plane-parallel side surfaces, which can be made correspondingly advantageous.

In the case of two spacers 209 arranged between the covers 206 and 207, an opening 213 is created which can be closed by means of a closure piece 214. The closure piece must also not be made of the same material as the lid or the spacers, since it neither takes load-bearing forces nor must be of appropriate load capacity. The closure piece prevents the ingress of dirt or other contaminants even in the event that the housing with the open side, on which the impeller protrudes, points in the direction of gravity downwards.

The spacer 209 is made of an extruded 209a. In this case, a post-processing of the spacers largely eliminated, so that only one operation for the adjustment of the thickness of the spacer must be performed on the extending extruded. The width of the spacer 209 now corresponds to the distance of the bearing surfaces of the two covers 206 and 207. The spacer 209 can be designed for different wheel widths 204a with corresponding width 209b, as is apparent from Figures 3B to 5B Here is only a single thickness setting when cutting a spacer on thickness required. In a narrow design 215 of the impeller 204 and the spacer 209, the two lid hubs 206a and 207a except for one Gap distance 216 brought together (Fig. 4B), so that an adaptation to different impeller diameter / load capacities can take place. The lid section 217 of the covers 206 and 207 is made thicker outside the impeller diameter 204c (FIG. 6B) so that components can be accommodated in the thickenings. In a thicker cross-section 217a of the lid 206; Countersinks 218 are arranged for screw heads 219 and nuts 220. The countersinks 218 (FIG. 6B) have hexagonal shapes 221 which alternately receive either a hexagon head 219a or a hex nut 221a.

The two covers 206 and 207 are the same in the normal case. As spacers 209 intermediate pieces 209 c are provided, the side of the peripheral portion 204 d of the impeller 204 fill a space 222 between the two covers 206 and 207, which results in the block shape of the impeller block and whereby a protrusion of the impeller is made possible up or down. The intermediate pieces 209c have bores 223 or in their place hubs 224, into which respective hubs 225 or respective bores 226 in the covers 206 and 207 engage in a fixing manner, which enables the assembly of the wheel hub in combination with an adjustment of the individual parts. For detachable or non-detachable attachment of the impeller block, the intermediate pieces 209c are each provided with at least one recess 227 which runs parallel to the impeller axis 204e. As a result, prefabricated bolts can be used, with an inaccurate hole pattern of the counterpart is possible without this leading to disadvantages, because the bolts can move in the recess 227 and adapt to the inaccurate hole pattern. The recesses 227 are formed as a groove guide 227a, as through-holes 227b or as threaded holes 227c. In the groove guides 227a, locknuts 228 for connecting screws 229 (FIG. 10B) are adjustable in cross and are guided with low backlash. This embodiment thus serves to facilitate the connection and the alignment during the initial assembly between the supporting structure, carrier, running frame or the like. and the formed housing of the impeller block.

The intermediate pieces 209c are disposed substantially on the housing end faces 201b which are formed together with the lid end faces 206b and 207b, respectively. The intermediate pieces 209c have groove guides 227a and through holes 227b or threaded bores 227c which are part of the extruded profile 209a. Depending on the accuracy of the connection, the corresponding Durchgangsart can be selected. To clear investment conditions of the impeller block on the structure, support, chassis 205 or the like. to create at least one cover 206 and 207 to Kopfänschlußfläche 210 is set lower. This also makes it possible that a cover 206 and 207 can be easily detached from the impeller block, without a misalignment of the entire wheel block to the structure, support, chassis 205 or the like. takes place, i. This achieves easy disassembly of the lid to be removed on one side.

At least one cover 206 or 207 is provided with centering hubs 206c and 207c, which engage in corresponding holes 230 of the spacer 209 and an intermediate piece 209c, so that an advantageous power transmission takes place.

It is also possible that the lid hubs 225 are provided with inner bores 231 for receiving support bolts 232 which extend concentrically with the lid hub 225.

This design contributes to a good power transmission to support the reaction forces in the housing of the impeller block.

The centering hubs 206c and 207c, corresponding holes 230 in the spacer 209 and an intermediate piece 209c and the inner holes 231 extend with their common axis 233 each outside the peripheral portion 204d of the impeller 204 parallel to the impeller axis 204e, whereby assembly, disassembly and adjustment are favored ,

In the spacer 209, a receiving hub 234 for a rotary bearing 203 for receiving the inner ring 235 or the outer ring 236 is formed on the cover 206 or 207 opposite side 209e (not shown on the spacer 209).

At the outer surface 209f of the spacer 209 or the intermediate piece 209c opposite the head connection surface 210, at least one partial connection surface 237 (pointing downwards) is formed (FIG. 10B). The impeller block can therefore also be used in a patched or upright position. The outer end abutment surfaces 209d of the spacer or spacers 209 are undivided and each form a receiving surface for carrying forces.

The lids 206 and 207 are made of steel sheet with the sheet thickness 206d and 207d, respectively, encircling the impeller 204 inwardly of the wheel block center 238 (Figures 5B and 6B); a production path for the essential parts of the impeller block.

The screw heads 219, the nuts 220 and the countersinks 218 for fastening bolts 239 are located under recessed surfaces 240 and are thus behind the outer contour 241 of the impeller block, whereby the holding together of the impeller block is achieved. The spacers 209 and the intermediate pieces 209c and / or the covers 206 and 207 are made of a material to be processed in a molten state in order to avoid corrosion or to save weight. The material may for example consist of a light metal alloy. The material may alternatively consist of an iron alloy. Furthermore, the material can also be selected from a plasticizable plastic. Finally, the material consists of composite material or forms with other materials a composite material.

An embodiment of the third variant of the invention is described below:

An impeller (FIGS. 1C and 4C) has a housing 301 in which pivot bearing seat surfaces 302 for pivot bearings 303, namely sliding and / or rolling bearings 303a, are provided for supporting a conventionally downwardly projecting impeller 304. The impeller 304 and / or the pivot bearings 303 are expandable, without the housing 301 of a (not shown) carrier, running frame or the like. to separate, to which the housing 301 is attached in several directions releasably or permanently attached.

The housing 301 exhibits at least one head contact surface 305 receiving the bearing force and extending approximately to the housing width 301a or the wheel width 304a. The housing 301 is designed on a cheek side 306 in the direction of the shaft axis 307a of the shaft 307 without a bearing housing part flying storage arises. The housing 301 is manufactured in one piece by casting, spraying, forging, extruding, deep drawing or similar manufacturing processes. Due to the one-piece construction, it is not necessary to connect a plurality of housing parts to one another, as a result of which special fastening means and assembly times and production times (set-up times) are saved.

With improved functional features, this production is determined by a housing hub 309 extending axially below the pivot bearing 303, which accommodates the rotary bearings 303 and is formed asymmetrically with respect to the width center plane 308. The impeller 304 is provided in an analogous manner with an impeller hub 304b integrally formed with the shaft 307 and extending from the open cheek side 306 of the housing 301 into the housing hub 309. Another improvement is that the housing hub 309 and / or the impeller hub 304b are cylindrical or stepped.

The position and the load-bearing capacity are improved by subdividing the head connection surface 305 and / or a cheek connection surface 310 and / or an end connection surface 311 into overlying and non-contacting side surfaces 305a and 305b. In this case, an abutting part surface 305a can be undivided. The flatness of the surface is correspondingly more accurate in a homogeneous material and smaller partial surfaces as a connection surface than in the case of several or large partial surfaces and requires shorter production times. Furthermore, defined forces are introduced into the connecting structure via the smaller partial surfaces. This allows for an optimized design of the connecting structure with known power flow.

The strength (bending load capacity) of the flying bearing is influenced by the shaping, whereby material can be saved. It is envisaged that the housing hub 309 is embodied in the cross section penetrated by the shaft 307, a first cone 312a facing away from the open cheek side 306 and lying with the larger diameter 312 on the open cheek side 306. This construction also allows for different production processes in large width. This results in an almost complete space utilization in terms of claim favorable parts. A manufacturing technology advantageously designed, as space-saving shaped transition from the first cone then looks so that the housing hub 309 in the penetrated by the shaft 307 cross section of the first cone 312 a second cone 313 a counter-connected, whose larger diameter 313 the larger diameter 312 the first cone 312a is arranged facing away. In this case, the outer surface 304c of the impeller hub 304b of the inner surface 312b of the second cone '313a is matched with a gap distance 314; so far can the space utilization be driven forward. In this case, a durable design is created with minimum material consumption.

With a corresponding width of the pivot bearing 303, the length of the housing hub 309 may be made shorter such that the rim 304d of the impeller 304 and the impeller hub 304b are connected by a web cross-section 304e which is flatly conical towards the width center plane 308, which serves for better space utilization. The pivot bearings 303 may be arranged symmetrically to the width center plane 308 in the interior 304f of the impeller 304 and on the housing hub 309, respectively, in order to achieve a compact design.

With a slight expansion of the pivot bearing and / or the impeller is in principle associated with an opening to be created, which must be secured against ingress of dust and dirt. The open cheek side 306, which is designed without a supporting housing part, is closable by means of a detachable cover plate 315. Due to the solubility of a lateral expansion of the bearing and / or the impeller is favored. The lateral expansion reduces the disassembly and assembly costs of the impeller in that now the supporting structure, the carrier or the running frame only has to be raised by the flange height of the impeller. Opposite the open cheek side 306, the housing 301 is formed on the remote housing side 301c (opposite to the housing side 301b) with a flange contact surface 316 for fastening elements 317 (FIG. 2C).

The head pad 305 is provided with one or more apertures 318 which are closable by means of shutters 319, which need not be made of the same material as the housing, since they neither take up bearing forces nor must be of adequate load capacity. The closure pieces prevent the ingress of dirt or other contaminants even in the event that the housing with the open side, to which the impeller protrudes, pointing in the direction of gravity (down). The fixed side of the housing can be used for flanging, releasable or permanent fastening. Advantageously, the impeller radius can be increased by more than the thickness of the upper plate boundary.

The head connection surface 305 has at least one recess 320, which runs parallel to the shaft axis 307a. As a result, prefabricated bolts can be used, with an inaccurate hole pattern of the counterpart is possible without this leads to disadvantages, because the bolts can move in the recess and adapt to the inaccurate hole pattern. Such a recess 320 may be formed as a groove guide 320a, as a through hole 320b or as a threaded bore 320c. Depending on the accuracy of the connection, the corresponding Durchgangsart can be selected. In the groove guides 320a locknuts 321 for connecting screws 322 are transversely adjustable and low backlash. This embodiment, thus serves to facilitate the connection and the alignment during the initial assembly between the supporting structure, carrier, running frame or the like. and the housing of the impeller block.

The entire wheel block is held either by permanent or by releasable fasteners on a driving or supporting frame. On the head pad 305 and / or on the outer end pads 311 of the housing 301 receiving means 323 are provided for fasteners, as shown, consist of inner eyes with through holes. In addition to the provided on the head pad 305 groove guides 320a with locknuts 321 and recesses 324 may be provided on the Stimanschlußflächen 311 of the housing 301.

At the outer surface 325 of the housing 301 opposite the head connection surface 305, at least one partial connection surface 326 is formed. The outer end faces 311 of the housing 301 are undivided and each represent a receiving part surface 327 for carrying forces. Therefore, other aggregates, such as e.g. Guide rollers, measuring devices and the like. be connected. This sub-connection surface can also be designed so that the entire impeller block can be connected to this surface with the structure, support or chassis.

The housing 301 and / or the cover plate 315 are made of a material to be processed in a molten state, which may be selected from a light metal alloy, in particular to save weight. In particular, light metal materials and plastics come into consideration. When using these materials also corrosion is avoided. For higher strength claims it is provided that the material consists of an iron alloy. Analogous to the corresponding manufacturing process, the material consists of a plasticizable plastic. It is also possible that the material consists of composite material or forms a composite material with other materials.

LIST OF REFERENCE NUMBERS

101

casing

102

Rotary bearing seat

103

Sliding and / or roller bearings

104

Wheel

104a

Circumference of the impeller

104b

Impeller diameter

105

trial frame

106

housing width

107

wheel width

108

Head pad

108a

Side of the head connection surface

109

connecting means

109a

connecting screw

110

Wangen area

111

Forehead pad

112

resting part surface

113

non-resting partial surface

114

cover

114a

Thickness of the lid

114b

Lid section

115

breakthroughs

116

closing piece

117

recess

118

wheel axle

119

groove guide

120

threaded hole

121

locknuts

122

centering

123

corresponding holes

124

internal bores

125

support bolts

126

axis

127

the lid opposite side

128

up hub

129

pivot bearing

129a

inner ring

129b

outer ring

130

up hub

131

receiving means

132

recesses

133

Through Hole

134

outer surface

135

Part pad

136

receiving surface

138

countersinks

139

screw heads

140

nuts

141

Hexagonal shape

142

Allen head

143

Hex nut

144

centering bushes

201

casing

201 a

housing width

201b

Housing face

202

Pivot bearing seating surfaces

203

Swivel bearing (plain and / or roller bearings)

204

Wheel

204a

wheel width

204b

impeller hub

204c

Impeller diameter

204d

peripheral portion

204e

wheel axle

205

Structure, beams, chassis

206

cover

206a

cover hub

206b

Cover front side

206c

centering

206d

sheet thickness

207

cover

207a

cover hub

207b

Cover front side

207c

centering

207d

sheet thickness

208

peripheral portion

209

spacer

209a

extruded

209b

corresponding width

209c

connecting piece

209d

Forehead pad

209e

Spacer side

209d

outer surface

210

Head pad

211

connecting means

212

direction of travel

213

opening

214

closing piece

215

narrow execution

216

gap distance

217

Lid section

217a

thicker lid cross-section

218

countersink

219

screw head

219a

Allen head

220

mother

221

Hexagonal shape

221 a

Hex nut

222

Space between lids

223

drilling

224

hub

225

cover hub

226

cover bore

227

recess

227a

groove guide

227b

Through Hole

227c

threaded hole

228

locknut

229

connecting bolts

230

corresponding holes

231

internal bores

232

support bolts

233

common axis

234

up hub

235

inner ring

236

outer ring

237

Part pad

238

Radblockmitte

239

mounting bolts

240

recessed surface

241

Outer contour of the wheel block

301

casing

301 a

housing width

301 b

case side

301 c

opposite side of the housing

302

Pivot bearing seating surfaces

303

pivot bearing

303a

Sliding and / or roller bearings

304

Wheel

304a

wheel width

304b

impeller hub

304c

outer surface

304d

rim

304e

Web cross-section

304f

Heart of the wheel

305

Head pad

305a

resting part surface

305b

non-resting partial surface

306

cheek side

307

wave

307a

shaft axis

308

Width midplane

309

housing hub

310

Cheek pad

311

Forehead pad

312

larger diameter

312a

first cone

312b

palm

313

larger diameter

313a

second cone

314

gap distance

315

detachable cover plate

316

flange contact

317

fasteners

318

breakthrough

319

closing piece

320

recess

320a

groove guide

320b

Through Hole

320c

threaded hole

321

locknut

322

connecting bolts

323

receiving means

324

recess

325

outer surface

326

Part pad

327

subarea

Claims (8)

1. Running wheel block with a housing (101) having at least one connecting surface for attachment to an underframe, bracket, chassis or suchlike, with inward-directed holding hubs arranged in the housing (101) for rotary bearings (103) in which is mounted a running wheel (104) with a section of its rolling surface projecting out of the housing (101) on at least one side, the housing (101) being open on one of its two sides in the direction of the running wheel's axis (118), such that the running wheel (104) can be fitted on or removed from the said open side, characterised in that
   one of two holding hubs (128, 130) provided is arranged on a cover (114) which closes the housing (101), the said cover being attached to the housing (101) in a position lower than the connecting surface (108), being detachable when in the assembled condition, and being provided with centring means (122) which, when the cover (114) is closed, establish the position of the holding hub (128 or 130) relative to the axis of the running wheel.
2. Running wheel block according to Claim 1,
   characterised in that the centring means consist of centring hubs (122).
3. Running wheel block according to Claim 1,
   characterised in that the centring hubs (122) engage in corresponding bores (123) of the housing (101).
4. Running wheel block with a housing (201) having at least one connecting surface for attachment to an underframe, bracket, chassis or suchlike, with inward-directed holding hubs arranged in the housing (201) for rotary bearings (203) in which is mounted a running wheel (204) with a section of its rolling surface projecting out of the housing (201) on at least one side, the housing (101) being open on both sides in the direction of the running wheel's axis (118) such that the running wheel (104) can be fitted on or removed from the said open side, such that two holding hubs (206a, 207a) are provided and each holding hub (206a, 207a) is arranged on one of two opposite sidewalls (206, 207) which can be taken off when in the assembled condition, between which is provided at least one spacer (209) that forms the housing (201) together with the said sidewalls (206, 207), on which the connecting surface (210) is formed, and the removable sidewall (206, 207) is positioned lower than the connecting surface (210) and in provided with centring means (206c, 207c) which, when the sidewall (206, 207) is attached to the housing (201), establish the position of the holding hub (206a, 207a) relative to the axis of the running wheel.
5. Running wheel according to Claim 4,
   characterised in that seen in the driving direction (212), two separate spacers (209) are arranged one in front of and one behind the running wheel (204).
6. Running wheel block with a housing (301) having at least one connecting surface for attachment to an underframe, bracket, chassis or suchlike, with an inwards-directed holding hub arranged in the housing (301) for rotary bearings (303), in which is mounted a running wheel (304) with a section of its rolling surface projecting out of the housing (301) on at least one side, the housing (301) being open on one of its two sides in the direction of the running wheel's axis (118), such that the running wheel (304) can be fitted on and removed from the said open side, characterised in that the housing (301) has the holding hub (309) on one side and is open on the opposite side (306), and the running wheel (304) surrounds the holding hub (309) and can be fitted onto or into the rotary bearing (303) from the open side (306).
7. Running wheel block according to Claim 6,
   characterised in that the housing (301) is made in one piece.
8. Running wheel block according to either of Claims 6 or 7, characterised in that an axial housing hub (309) is provided which extends as far as under the rotary bearing (303), receives the rotary bearing (303) and is formed asymmetrically with respect to the central plane (308), and the running wheel is also provided with a running wheel hub (304b) which extends from the open side (306) of the housing (301) into the housing hub (309), is asymmetrically formed, and is connected to a shaft (307).

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