CH711705A2 - Device for releasably connecting a Zusatzradfelge with a Fahrzeugradfelge. - Google Patents

Abstract

The invention relates to a device (1) for releasably connecting a Zusatzradfelge (4) with a Fahrzeugradfelge (3), in particular an agricultural vehicle, such as tractors, wherein the device (1) has a spacer ring (5) and at least one clamping element (2) , wherein the two rims (3, 4) with the interposition of the spacer ring (5) by means of the at least one clamping element (2) are detachably connected to one another concentrically with each other. The device (1) according to the invention is characterized in that the spacer ring (5) consists of at least two spacer ring parts (5.1, 5.2), which are concentric with each other at least in the axial direction against each other and are displaceable relative to each other in at least two different axial positions ,

Description

The present invention relates to a device for releasably connecting a Zusatzradfelge with a Fahrzeugradfelge, in particular an agricultural vehicle, such as tractors, wherein the device comprises a spacer ring and at least one clamping element, wherein the two rims with the interposition of the spacer ring by means of at least one Clamping element concentrically releasably connected to each other are connected.

From EP 1 529 656 A2 a double wheel for a vehicle, in particular for an agricultural vehicle, known, wherein the double wheel, a vehicle with a Fahrzeugradfelge, an additional wheel with a Zusatzradfelge and one of the two rims with the interposition of a spacer releasably with each other connecting clamping device comprises. The spacer ring has a fixed, predetermined axial length, so that with the spacer ring only a certain axial distance of the two interconnected rims of the vehicle and auxiliary wheel can be produced. If a different axial distance of the two interconnected rims of the vehicle and the additional wheel is desired or needed, another spacer ring with a corresponding greater or smaller axial length must be used. This disadvantageously requires the manufacture and provision of a plurality of spacers of different axial length.

For the present invention, therefore, the task is to provide a device of the type mentioned, which avoids the disadvantages mentioned and in particular allows for easier production of different distances between the vehicle rim and Zusatzradfelge at twin or twin wheels.

The object is achieved according to the invention with a device of the type mentioned above, which is characterized in that the spacer ring consists of at least two spacer rings which are concentric ineinanderge-leads at least in the axial direction against each other and in at least two different axial positions relative to each other can be fixed against each other.

With the invention, a variable in its axial length, demand adjustable spacer ring is provided which replaces a number previously required different long spacer rings. As a result, costs in production, logistics and provision are reduced. Since the spacer ring parts are telescopically guided one inside the other, they are simply displaceable in their axial position relative to each other and then fixed relative to each other in desired, suitable positions by means of releasable fixing means. In this way, an axial distance between the vehicle rim and the Zusatzradfelge and thus between the vehicle and the additional wheel can be adjusted quickly and easily and in particular without costly replacement of the spacer ring as needed.

In a further embodiment of the inventive device is preferably provided that a first spacer ring is arranged distributed in the circumferential direction oblong holes with spaced apart in the axial direction slot ends or distributed in the circumferential direction arranged rows of holes each having two or more axially spaced holes, that a second spacer ring part is provided with a circumferentially circumferential perforated ring with positionally aligned to the slots or rows of holes arranged individual holes and that for releasably fixing the two spacer parts against each other bolts are each feasible by two holes brought into coverage in the two spacer ring parts. In the version with oblong holes a continuous adjustment of the distance of the rims in the range between the minimum and maximum distance measure is possible; For models with rows of holes, a stepwise adjustment of the distance of the rims in the range between the minimum and maximum distance measure is possible. The length of the slots or rows of holes depends on the maximum necessary or desired adjustment range of the distance between the vehicle wheel and Zusatzradfelge; Accordingly, the expert will then determine the axial length of the two spacer ring parts.

Preferably, the elongated holes or the rows of holes extend obliquely to the axial direction of the spacer ring part having them. This course of the elongated holes prevents unwanted displacement of the spacer ring parts against each other when external forces act. In the rows of holes, this course provides increased mechanical stability, since the holes at an axial distance have an additional distance in the circumferential direction, which allows a more dense arrangement in the axial direction of the holes without weakening due to a close fitting of the holes.

In terms of easy handling of the device by the operator is provided that the individual holes are designed as threaded holes or with undercut or untergeschweissten threaded nuts. Loose nuts that can easily be lost are not needed.

Especially with tractors for field cultivation certain, given wheelbases are required due to usual planting distances depending on the plant species, so that the wheels can run while driving on the field exactly between there growing rows of plants. In order to facilitate a corresponding adjustment of the distance of Zusatzradfelge relative to the vehicle rim, it is proposed that one or more provided with a scale scale viewing slots are mounted in the radially outer spacer ring part, through which an edge of the inner spacer part or a positioning on the outer circumference of the inner Spacer ring part is visible. With the aid of the viewing slits and the graduated scale, a specific, frequently required distance between the rims can be set and controlled quickly and easily, without the need for special measuring tools.

Preferably, it is further provided for the device that a in its installed state of Zusatzradfelge facing spacer ring part connected to the Zusatzradfelge, preferably welded, is. Hereby, the auxiliary wheel fig and the spacer ring form a structural unit, which simplifies the mounting and dismounting of the additional wheel rim or the complete additional wheel including the tire.

For cases in which the Zusatzradfelge has a larger diameter than the Fahrzeugradfelge, the invention provides for the device that mounted on the inner periphery of the Zusatzradfelge arranged in a radial plane bridging ring, preferably welded, and that of the Zusatzradfelge facing Distance ring part at its axially outer end side fixedly connected to the inner circumference of the bridging ring, preferably welded, is. The bridging ring compensates for the difference in diameter between the rims, so that the spacer ring with its spacer ring parts can remain unchanged compared to cases with two rims of equal size.

For the device is further preferably provided that the at least one clamping element is a length-adjustable, can be set under tension and relaxable tension rod. With one or more tie rods the necessary forces for holding the rims can be safely applied, which contributes to a reliable operation of equipped with Zusatzradfelgen or additional wheels vehicle.

For the purpose of distributing the clamping forces several clamping elements in the form of clamping rods in the circumferential direction of the rims are distributed between these attachable, wherein the tie rods at one end to the Fahrzeugradfelge and at its other end with a clamping ring, directly or via the bridging ring with the Zusatzradfelge is connected, can be brought into and out of engagement. The spars can advantageously be completely separated from the rims, which facilitates the handling of the flange when mounting the Zusatzradfelge to the Fahrzeugradfelge and when dismantling the Zusatzradfelge of the Fahrzeugradfelge.

In the following, embodiments of the invention will be explained with reference to a drawing. The figures of the drawing show:

1 is a Zusatzradfelge with a width adjustable two-piece, separately shown spacer ring, in vertical section,

2, the Zusatzradfelge of FIG. 1 with assembled, narrow spacer ring,

FIG. 3 shows the additional wheel rim from FIG. 1 with the spacer ring assembled,

4 shows the additional wheel rim with a narrow spacer ring, together with a smaller diameter vehicle wheel rim, in vertical section,

4 with the spacer ring set wide, together with the smaller diameter vehicle wheel rim, in vertical section,

Fig. 6 is a Zusatzradfelge narrow with adjusted spacer ring, together with a diameter of the same size Fahrzeugradfelge, in vertical section, and

Fig. 7, the Zusatzradfelge of Fig. 6 with a wide set spacer ring together with the same diameter in the same diameter Fahrzeugradfelge, in vertical section.

In the following description of the figures, the same parts in the various drawing figures are always provided with the same reference numerals, so that not every drawing figure, all reference numerals must be explained again.

Fig. 1 shows a Zusatzradfelge 4 with a two-piece, shown separately spacer ring 5, in vertical section. The spacer ring 5 consists of two spacer parts 5.1 and 5.2, which are shown in Fig. 1 in a not yet connected, exploded state. Both spacer rings 5.1.5.2 have a hollow cylindrical basic shape, wherein the first, shown in Fig. 1 right spacer ring part 5.1 has an inner diameter at its inner periphery 51, which corresponds to the outer diameter of the outer periphery 52 of the second, shown in Fig. 1 left spacer ring part 5.2, wherein between the inner circumference 51 of the first spacer ring part 5.1 and the outer diameter 52 of the second spacer ring part 5.2 sufficient play is provided.

The left in Fig. 1, additional-wheel-side spacer ring part 5.2 is fixed to the Zusatzradfelge 4, tentatively welded. Since in the example in Fig. 1, the diameter of the second spacer ring 5.2 is smaller than the outer diameter of the Zusatzradfelge 4, with the inner periphery 40 of the Zusatzradfelge 4 here in a radial plane lying bridging ring 60 is connected. For this purpose, the bridging ring 60 is fixedly connected on its outer circumference to the inner circumference 40 of the additional wheel rim 4, in particular welded. With the inner circumference of the bridging ring 60 is a low, hollow cylindrical clamping ring 6 is firmly connected, also conveniently welded. In this case, the clamping ring 6 is arranged concentrically to the Zusatzradfelge 4 and to the second spacer ring part 5.2. The outer diameter of the clamping ring 6 corresponds to the inner diameter of the second spacer part 5.2.

The second spacer ring part 5.2 is placed with its additional wheel-side end face 58 with a slight overlap on the outer circumference of the clamping ring 6 and abuts the first spacer ring part 5.1 facing side of the radially inner edge region of the bridging ring 60, where the second spacer ring part 5.2 with the Bridging ring 60 and / or firmly connected to the clamping ring 6, suitably welded, is.

Distributed over its circumference, the second spacer ring part 5.2 has in its first spacer ring part 5.1 facing edge region a plurality of individual holes 54th

The first spacer ring part 5.1 shown on the right in Fig. 1 has distributed over its circumference a plurality of obliquely extending oblong holes 53, whose distribution corresponds to the distribution of the individual holes 54 in the second spacer ring part 5.2. Furthermore, in the first spacer ring part 5.1 distributed over the circumference 53 between each two adjacent oblong holes 59 view slits 59 incorporated, each of which is assigned to the material of the first spacer ring part 5.2 impressed mass scale 59 '. At a slight distance from its vehicle wheel-side end face 57, which points to the right in FIG. 1, the first spacer ring part 5.1 has a molded, outwardly facing, circumferential bead 56.

For connecting the spacer ring parts 5.1 and 5.2 with each other to the spacer ring 5, the first, in Fig. 1 right spacer ring part 5.1 is moved in the direction of the second, in Fig. 1 left spacer ring part 5.2 and the Zusatzradfelge 4, wherein the first spacer ring part 5.1 slides over the outer circumference of the second spacer ring part 5.2, so that then partially overlap the two spacer ring parts 5.1, 5.2 in a variable measure.

The right in Fig. 1, facing away from the Zusatzradfelge 4 region of the first spacer ring part 5.1 can be brought into engagement with a Fahrzeugradfelge and braced against this to form a twin wheel, as will be explained in more detail below.

Fig. 2 shows the Zusatzradfelge 4 of FIG. 1 with assembled, narrow set spacer ring 5, in which case the first spacer ring part 5.1 is pushed as far as possible on the second spacer ring part 5.2. In this maximum overlapping position, the two spacer ring parts are 5.1,5.2 by means of bolts 55 and nuts 55 'releasably connected together and fixed against each other. The bolts 55 each extend through one of the elongated holes 53 in the first spacer ring part 5.1 and one of the individual holes 54 in the second spacer ring part 5.2. Here are the bolts 55 each on the vehicle wheel side end face 57 of the first spacer ring part 5.1 facing the end of the slots 53, which are completely hidden in Fig. 2 by the second spacer ring part 5.2. The spacer ring 5 formed from the spacer ring parts 5.1 and 5.2 now has its minimum possible axial length, which accordingly results in a minimum distance between the Zusatzradfelge 4 and a Fahrzeugradfelge not shown here.

Fig. 3 shows the Zusatzradfelge 4 of FIG. 1 with zusammengebautem, wide adjusted spacer ring 5, in which case now have the two spacer ring parts 5.1, 5.2 have a minimum mutual overlap. Also in this mutually minimally overlapping position, the two spacer ring parts 5.1, 5.2 by means of the bolts 55 and nuts 55 'releasably connected to each other and fixed against each other. The threaded bolts 55 each extend through one of the elongated holes 53 in the first spacer ring part 5.1 and one of the individual holes 54 in the second spacer ring part 5.2. In this case, the bolts 55 are now each on the vehicle wheel side end face 57 of the first spacer ring part 5.1 facing away from the end of the slots 53, which are only partially covered in Fig. 3 by the second spacer ring part 5.2. The distance ring 5 formed from the spacer ring parts 5.1 and 5.2 now has its maximum possible axial length, which accordingly results in a maximum distance between the Zusatzradfelge 4 and a Fahrzeugradfelge not shown here.

Due to the representation in a vertical section of the view of the observer falls in Figs. 2 and 3 on the inner peripheral surfaces of Zusatzradfelge 4 and spacer parts 5.1, 5.2. When viewed from the radial outside on the spacer ring 5, the observer's gaze falls from the outside onto the viewing slits 59 and the associated measuring scales 59 '. Through the viewing slots 59 through each of the first spacer ring part 5.1, that is, according to FIG. 2 and 3 to the right, facing end edge of the second spacer ring part 5.2 visible, so that even without the use of separate measuring tools a desired axial length of the spacer ring 5 with sufficient Accuracy can be adjusted.

Fig. 4 shows the Zusatzradfelge 4 with narrow spacer ring 5 together with a smaller diameter Fahrzeugradfelge 3 and with mounted clamping elements 2, in vertical section, the clamping elements 2, the spacer ring 5 and the clamping ring 6 together the device 1 for connecting the Zusatzradfelge 4 with the Fahrzeugradfelge 3 form. The additional wheel rim 4 and the two-part spacer ring 5 in FIG. 4 correspond to the example already explained in FIG. 2, to the description of which reference is made.

The arrangement of Zusatzradfelge 4 and spacer ring 5 is inserted with the fahrzeugradseitigen end face 57 of the first spacer ring portion 5.1 at a certain distance in the Zusatzradfelge 4 facing, open side of the Fahrzeugradfelge 3, wherein the bead 56 at the first spacer ring part 5.1 in the area a groove-shaped, circumferential contour 36 comes to rest in the vehicle wheel rim 3, so that a further insertion of the spacer ring 5 in the vehicle wheel rim 3 is no longer possible. In this position relative to each other by means of the clamping elements 2, the Zusatzradfelge 4 with the spacer ring 5 on the one hand and the Fahrzeugradfelge 3 on the other hand braced against each other in the axial direction, whereby the twin rim of Fahrzeugradfelge 3 and Zusatzradfelge 4 is formed. Depending on the size of the rims 3, 4 to be joined together, more or less many clamping elements 2 are used, the practice usually three to five pieces. In practical use sitting on each rim 3, 4 also a tire that is not shown here for reasons of clarity.

The clamping elements 2 are here as spindles, each with a vehicle wheel side clamping rod portion 21, an additional wheel side clamping rod portion 23 and a connecting, rotatable turnbuckle 20 is formed.

The vehicle wheel rim 3 has a wheel disc 30 in the conventional design, in which distributed in the circumferential direction a plurality of bores 33 are mounted. In each of the bores 33, a respective head bolt 34 is inserted, which is in engagement with a head piece 25 at the vehicle wheel side end of the first tie rod portion 21. At the axially outer end of the second clamping rod portion 22, an end piece 26 is in each case arranged, which is bounded by an axially fixed on the tie rod portion 23 stop 27 in its movement axially outwardly on the tie rod portion 22.

Each clamping element 2 can be brought in a relaxed, that is in its length enlarged state, forcibly on the one hand at its head piece 25 with the head bolt 34 and on the other hand at its end 26 with the clamping ring 6 in an axial tensile forces transmitting engagement. By turning the turnbuckle 20 in the sense of shortening the clamping element 2, the length of the clamping element 2 is shortened, whereby the desired connection and axial clamping of Zusatzradfelge 4 and spacer ring 5 on the one hand and Fahrzeugradfelge 3 on the other hand with a minimum distance of the rims 3, 4 is achieved ,

Fig. 5 shows the Zusatzradfelge 4 with a wide set spacer ring 5 together with the smaller diameter vehicle wheel rim 3 and the clamping elements 2, again in vertical section. The Zusatzradfelge 4 and the Fahrzeugradfelge 3 are here connected to each other in the same manner as in the example of FIG. 4, wherein only different, that the spacer ring 5 in Fig. 5 has its maximum axial length and that accordingly the clamping elements 2 also a larger have axial length. If the clamping elements 2 have a correspondingly large adjustment range of their length, the same clamping elements 2 can be used in both cases. Alternatively, differently designed clamping elements 2 can also be used with regard to their length. In the tensioned state of the clamping elements 2 shown in Fig. 5, the desired connection of Zusatzradfelge 4 and spacer ring 5 on the one hand and Fahrzeugradfelge 3 on the other hand by their axial bracing against each other, now with a maximum distance of the rims 3, 4 from each other achieved.

Of course, the two spacer ring parts are also connected 5.1.5.2 in intermediate positions, so that any distance between the Zusatzradfelge 4 of the Fahrzeugradfelge 3 between the two extreme positions of the spacer ring parts 5.1, 5.2 relative to each other is possible.

In the examples according to FIGS. 4 and 5, the Zusatzradfelge 4 has a larger outer diameter than the Fahrzeugradfelge 3. Thus, the Zusatzradfelge 4 is particularly suitable for receiving a low-pressure tire whose tread then has the same outer diameter when loaded by the associated vehicle such as a normal tire arranged on the vehicle wheel rim 3, so that the load of the vehicle is evenly distributed to both wheels of the twin wheel.

Fig. 6 shows a Zusatzradfelge 4 with narrow set spacer ring 5 together with a diameter equal to the same diameter Fahrzeugradfelge 3, in vertical section. The spacer ring 5 is also here in two parts with two concentrically arranged, mutually adjustable and fixable, each other more or less widely overlapping spacer parts 5.1,5.2 performed. In this case, in Fig. 6, the two spacer ring parts 5.1,5.2 as far as possible ineinan-pushed together, whereby a minimum axial length of the spacer ring 5 and so a minimum axial distance of the Zusatzradfelge 4 is achieved by the Fahrzeugradfelge 3.

In the Zusatzradfelge 4, a lower, hollow cylindrical clamping ring 6 is installed at the side facing away from the Fahrzeugradfelge 3, suitably welded, in which case the clamping ring 6 is mounted directly on the inner circumference 40 of the Zusatzradfelge 4; a bridging ring, as provided in the previously described examples, is not required here.

With its vehicle wheel rim 3 facing end face 57 of the first spacer ring part 5.1, as previously described, immersed by the groove-shaped contour 36 and the bead 56 limited Mass in the Fahrzeugradfelge 3 a. Conversely, the second spacer ring part emerges with its 5.2 additional-wheel-side end face 58 to a limited by the shape of the Zusatzradfelge 4 limited mass in the latter. In this position relative to each other, the Zusatzradfelge 4 and the Fahrzeugradfelge 3 again by a plurality of circumferentially distributed arranged clamping elements 2 braced against each other and so twisted together, wherein in Fig. 6, only one of the clamping elements 2 is visible.

Fig. 7 finally shows the Zusatzradfelge 4 of Fig. 6, now with a wide set spacer ring 5, together with the same diameter in the same diameter Fahrzeugradfelge 3, again in vertical section. Different from the example according to FIG. 6, in FIG. 7, therefore, the two spacer ring parts 5.1, 5.2 are connected to one another as far as possible in an exploded position, so that a maximum axial length of the spacer ring 5 and thus a maximum axial distance of the additional wheel rim 4 is achieved by the Fahrzeugradfelge 3.

The adjustable connection of the spacer ring parts 5.1, 5.2 corresponds to the above-described embodiment, reference is made to the description thereof.

The clamping elements 2 in the examples according to FIGS. 6 and 7 are again designed as spindles with a turnbuckle 20 and two tie rod sections 21, 22. Again, the first tie rod portion 21 which extends to the vehicle wheel rim 3, a head piece 25 which is in releasable engagement with a head bolt 34 which is incorporated in the wheel disc 30 of the vehicle wheel rim 3. At the opposite end of the clamping element 2, an end piece 26 is arranged on the second clamping rod portion 22 again, which is in releasable engagement with the fixed in the inner periphery 40 of the Zusatzradfelge 4 built-in clamping ring 6.

Different from the example of FIGS. 4 and 5, a tensioning ratchet 20 of the clamping elements 2 in Figs. 6 and 7 additionally provided with a handle, whereby a manual actuation of the clamping elements 2 during clamping and releasing the connection between Zusatzradfelge 4 and Fahrzeugradfelge 3 is simplified.

Since the rims 3, 4 shown in FIGS. 6 and 7 each have the same diameter, they are preferably equipped with mutually identical tires.

List of Reference Numerals [0042]

Symbol Description 1 Device 2 Clamping element (s) 20 Turnbuckle 21 Tie rod section (vehicle wheel side) 22 Tie rod section (additional wheel side) 25 Head piece to 21 26 End piece to 22 27 Stop to 22 for 26 3 Vehicle wheel rim 30 Wheel disc 33 Holes in 30 for 34 34 Head bolts 36 Grooved contour in 5 4 Additional wheel rim 40 Inner circumference of 4 5 Spacer ring 5.1 Radially outer spacer ring part 5.2 Inner inner spacer ring 51 Inner circumference of 5.1 52 Outer circumference of 5.2 53 Slotted holes in 5.1 54 Single holes in 5.2 55 Bolt 55 * Threaded nuts 56 Bead on 5 57 Front of 5 on the vehicle wheel side

Claims (9)

Symbol Description 58 Additional wheel-side end face of 5 59 Viewing slots 59 'Mass scale on 59 6 Clamping ring 60 Bridging ring Claims 1. Device (1) for releasably connecting a Zusatzradfelge (4) with a Fahrzeugradfelge (3), in particular an agricultural vehicle, such as tractors, wherein the device (1) has a spacer ring (5) and at least one clamping element (2), wherein the two rims (3, 4) with the interposition of the spacer ring (5) by means of at least one clamping element (2) are detachably interconnected concentrically with each other, characterized in that the spacer ring (5) consists of at least two spacer ring parts (5.1,5.2), the concentric ineinandergeführt at least in the axial direction against each other and are displaceable relative to each other in at least two different axial positions relative to each other can be fixed. 2. Apparatus according to claim 1, characterized in that a first spacer ring part (5.1) distributed in the circumferential direction arranged oblong holes (53) spaced apart in the axial direction slot ends or circumferentially arranged rows of holes each provided two or more axially spaced-apart holes is that a second spacer ring part (5.2) is provided with a circumferentially circumferential perforated ring with positionally correct to the slots (53) or rows of holes arranged individual holes (54) and that for releasably fixing the two spacer ring parts (5.1,5.2) against each other bolts (55) can be guided in the two spacer ring parts (5.1, 5.2) by two respective aligned holes (53, 54). 3. A device according to claim 2, characterized in that the slots (53) or the rows of holes extend obliquely to the axial direction of the spacer ring part having them (5.1). 4. Apparatus according to claim 2 or 3, characterized in that the individual holes (54) as threaded bores or with undercut or untergeschweissten threaded nuts (55 ') are executed. 5. Device according to one of claims 1 to 4, characterized in that in the radially outer spacer ring part (5.1) one or more with a scale (59 ') provided viewing slots (59) are mounted through which an edge of the inner spacer part ( 5.2) or a positioning mark on the outer circumference of the inner spacer part (5.2) is visible. 6. Device according to one of claims 1 to 5, characterized in that in its installed state of Zusatzradfelge (4) facing spacer ring part (5.2) integral with the Zusatzradfelge (4), preferably ver-welded, is. 7. The apparatus of claim 6, wherein the Zusatzradfelge (4) has a larger diameter than the Fahrzeugradfelge (3), characterized in that on the inner circumference of the Zusatzradfelge (4) arranged in a radial plane bridging ring (60) attached, preferably welded, is and that the Zusatzradfelge (4) facing spacer ring part (5.2) at its axially outer end face (58) fixedly connected to the inner circumference of the bridging ring (60), preferably welded, is. 8. Device according to one of claims 1 to 7, characterized in that the at least one clamping element (2) is a length-adjustable, can be set under tension and relaxable tension rod. 9. Apparatus according to claim 8, characterized in that a plurality, preferably three to five, clamping elements (2) in the form of tie rods in the circumferential direction of the rims (3, 4) distributed between these are attachable, wherein the tie rods at one end with the Vehicle wheel rim (3) and at its other end with a clamping ring (6) which is connected directly or via the bridging ring (60) with the Zusatzradfelge (4), in and out of engagement can be brought.