CN217892396U

CN217892396U - Hub of non-pneumatic tire, non-pneumatic tire and engineering vehicle

Info

Publication number: CN217892396U
Application number: CN202222226026.0U
Authority: CN
Inventors: 任会礼; 张斌; 黄斌; 彭毅
Original assignee: Hunan Zoomlion Intelligent Aerial Work Machinery Co Ltd
Current assignee: Hunan Zoomlion Intelligent Aerial Work Machinery Co Ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2022-11-25
Anticipated expiration: 2032-08-23

Abstract

The utility model provides a non-pneumatic tire's wheel hub, non-pneumatic tire and engineering vehicle, non-pneumatic tire's wheel hub includes: an annular rim for connection with a thin non-pneumatic bead of a non-pneumatic tire; the hub disc comprises a hub main body and a plurality of connecting legs, the hub main body is used for connecting the non-pneumatic tire and a driving device, the connecting legs are arranged on the hub main body at intervals along the circumferential direction of the non-pneumatic tire, and the annular rim is arranged outside the hub main body and is detachably connected with the hub main body through the connecting legs. The utility model discloses well non-pneumatic tire's wheel hub sets up a plurality of connection legs that set up along wheel circumferential direction interval through the outer fringe of wheel hub main part to all can dismantle a plurality of connection legs with annular rim and connect, can make things convenient for non-pneumatic tire's wheel hub's dismantlement, can also lighten the weight of wheel hub dish simultaneously, make things convenient for the transport and the recycling after the wheel hub dish is pulled down.

Description

Hub of non-pneumatic tire, non-pneumatic tire and engineering vehicle

Technical Field

The utility model belongs to the technical field of non-pneumatic tire, especially, relate to a non-pneumatic tire's wheel hub, non-pneumatic tire and engineering vehicle.

Background

The hub of the prior non-pneumatic tire usually comprises a metal hub and a non-pneumatic tread firmly bonded to the metal hub, and the two are usually regarded as a whole because they cannot be separately replaced. Rather than pneumatic tires, as load bearing and moving devices, the wear from the ground will be exacerbated. When the non-pneumatic tread needs to be replaced due to wear and aging, the entire tire, including the metal hub, needs to be replaced, resulting in a higher cost for tire replacement. And the tire that can carry out the split at present and change is mostly the tread split type that the tread is thicker, can change the tread of wearing and tearing alone, but the structure of the split type tire of tread is comparatively complicated and weight is heavier, more can not be applicable to the wheel hub of the thinner non-pneumatic tire of tread.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a non-pneumatic tire's wheel hub, non-pneumatic tire and machineshop vehicle, aim at solving the inconvenient dismouting of non-pneumatic tire's wheel hub among the prior art and the heavy technical problem of quality.

In order to achieve the above object, the present invention provides a hub for a non-pneumatic tire, wherein the hub for a non-pneumatic tire comprises: an annular rim for connection with a non-pneumatic thin bead of a non-pneumatic tire; the hub disc comprises a hub main body and a plurality of connecting legs, the hub main body is used for connecting the non-pneumatic tire and a driving device, the connecting legs are arranged on the hub main body at intervals along the circumferential direction of the non-pneumatic tire, and the annular rim is arranged outside the hub main body and is detachably connected with the hub main body through the connecting legs.

In an embodiment of the present invention, the connecting leg includes: a mounting boss provided to the hub main body and extending in a wheel radial direction of the non-pneumatic tire; the reinforcing installation piece is arranged at the outer end of the installation boss, the size of the cross section of the reinforcing installation piece is larger than that of the cross section of the installation boss, and the reinforcing installation piece and the annular rim are detachably connected.

In an embodiment of the present invention, the annular rim includes an annular outer cylinder and a plurality of support legs disposed on an inner wall of the annular outer cylinder, the support legs protrude toward the hub main body and connect with the reinforcing mounting member through a one-to-one connection.

In an embodiment of the present invention, the supporting leg includes: the supporting boss is arranged on the annular outer cylinder and extends along the radial direction of the wheel; strengthen support piece, set up in the inner of supporting the boss, strengthen support piece's cross sectional dimension and be greater than support boss's cross sectional dimension, the connecting piece runs through in proper order strengthen the installed part with strengthen support piece.

In an embodiment of the present invention, the hub of the non-pneumatic tire further includes an adjusting shim, the reinforcing mounting member and the reinforcing support member are formed with an adjusting gap therebetween, and the adjusting shim is disposed in the adjusting gap and is used for adjusting the annular rim and the supporting length of the hub main body.

In an embodiment of the present invention, the reinforcing support member and the reinforcing installation member are matched in shape.

In the embodiment of the present invention, the inner wall of the annular outer cylinder is provided with a plurality of first reinforcing ribs, and any two adjacent first reinforcing ribs are connected between the support legs.

The embodiment of the utility model provides an in, be provided with a plurality of second strengthening ribs in the wheel hub main part, arbitrary adjacent two be connected with one between the connecting leg the second strengthening rib.

The utility model discloses still provide a non-pneumatic tire, non-pneumatic tire includes non-pneumatic thin tire bead and as above non-pneumatic tire's wheel hub.

The utility model discloses a work vehicle is proposed again, work vehicle includes as above non-pneumatic tire.

Through the technical scheme, the embodiment of the utility model provides a non-pneumatic tire's wheel hub has following beneficial effect:

when the hub of the non-pneumatic tire is assembled and connected, the hub main body and the annular rim can be connected through the connecting legs, the connecting legs can jointly support the extrusion force applied to the hub of the non-pneumatic tire along the radial direction, the non-pneumatic thin tire ring can be annularly arranged outside the annular rim and connected with the annular rim, and after the hub main body is connected with the driving device, the hub main body can sequentially drive the connecting legs and the annular rim to rotate under the driving of the driving device. By splitting the hub of the non-pneumatic tire into the annular rim and the hub disc, when the non-pneumatic thin tire ring needs to be replaced, only the non-pneumatic thin tire ring needs to be replaced and the annular rim connected with the non-pneumatic thin tire ring is needed, the hub disc can still be continuously used, and the cost for replacing the hub of the non-pneumatic tire can be reduced. The utility model discloses well non-pneumatic tire's wheel hub sets up a plurality of connection legs that set up along wheel circumferential direction interval through the outer fringe of wheel hub main part to all can dismantle the connection with annular rim with a plurality of connection legs, can make things convenient for non-pneumatic tire's wheel hub's dismantlement, can also lighten the weight of wheel hub dish simultaneously, make things convenient for the transport and the recycle after the wheel hub dish pulls down.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide an understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention, but do not constitute a limitation of the invention. In the drawings:

FIG. 1 is a schematic view of an assembly structure of a non-pneumatic tire according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a non-pneumatic tire in accordance with an embodiment of the present invention;

FIG. 3 is a schematic view of a disassembled structure of a non-pneumatic tire according to an embodiment of the present invention;

FIG. 4 is a schematic view of a portion of a non-pneumatic tire according to an embodiment of the present invention;

fig. 5 is a schematic view of a hub structure of a non-pneumatic tire according to an embodiment of the present invention.

Description of the reference numerals

Label name

100. Hub 221 mounting boss of non-pneumatic tire

1. Annular rim 222 reinforcement mount

11. Annular outer cylinder 23 second reinforcing rib

12. Supporting leg 3 adjusting shim

121. Support boss 4 adjusting gap

122. Reinforcing support 5 connector

13. First reinforcing rib 6 buffer

2. Hub plate 7 wear prevention piece

21. Hub body 200 non-pneumatic tire

22. Non-pneumatic thin bead for connecting leg 210

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present invention.

The following describes a hub of a non-pneumatic tire according to the present invention with reference to the accompanying drawings.

As shown in fig. 1 to 3, in an embodiment of the present invention, there is provided a hub 100 of a non-pneumatic tire, wherein the hub 100 of the non-pneumatic tire comprises an annular rim 1 and a hub disc 2; the annular rim 1 is intended to be connected to a non-pneumatic thin bead 210 of a non-pneumatic tire 200; the hub disk 2 includes a hub main body 21 for connection with a drive device of the non-pneumatic tire 200, and a plurality of connecting legs 22 provided at intervals in the wheel circumferential direction of the non-pneumatic tire 200 on the hub main body 21, and an annular rim 1 provided around the hub main body 21 and detachably connected to the hub main body 21 through the connecting legs 22. Specifically, the annular rim 1 and the non-pneumatic thin bead 210 of the non-pneumatic tire 200 may be integrally connected by casting or vulcanization.

It is understood that the hub 100 of the non-pneumatic tire in the embodiment is mainly applied to a thin tire structure, and the non-pneumatic thin bead 210 can be a thin rubber layer, and can be connected with the inner wall of the non-pneumatic thin bead 210 and the outer wall of the annular rim 1 by means of adhesion, so that the non-pneumatic thin bead 210 firmly surrounds the outer ring of the hub 100 of the non-pneumatic tire. A lightening hole is formed between any adjacent two of the connecting legs 22.

When the hub 100 of the non-pneumatic tire in this embodiment is assembled, the hub main body 21 and the annular rim 1 can be connected by the plurality of connecting legs 22, so that the plurality of connecting legs 22 jointly support the extrusion force applied to the hub 100 of the non-pneumatic tire along the radial direction, the non-pneumatic thin bead 210 can be annularly arranged outside the annular rim 1 and connected with the annular rim 1, and after the hub main body 21 is connected with the driving device, the hub main body 21 can sequentially drive the plurality of connecting legs 22 and the annular rim 1 to rotate under the driving of the driving device. By splitting the hub 100 of the non-pneumatic tire into the annular rim 1 and the hub disk 2, when the non-pneumatic thin bead 210 needs to be replaced, only the non-pneumatic thin bead 210 and the annular rim 1 connected with the non-pneumatic thin bead 210 are replaced, the hub disk 2 can still be continuously used, and the replacement cost of the hub 100 of the non-pneumatic tire can be reduced. In the present embodiment, the plurality of connecting legs 22 are arranged at intervals along the circumferential direction of the wheel on the hub 100 of the non-pneumatic tire through the outer edge of the hub body 21, and the plurality of connecting legs 22 are detachably connected to the annular rim 1, so that the detachment of the hub 100 of the non-pneumatic tire is facilitated, the weight of the hub plate 2 is reduced, and the hub plate 2 is convenient to carry and reuse after being detached.

In the present embodiment, the connecting leg 22 includes a mounting boss 221 and a reinforcing mounting member 222; the mounting boss 221 is provided to the hub main body 21 and extends in the wheel radial direction of the non-pneumatic tire 200; the reinforcing mounting member 222 is disposed at an outer end of the mounting boss 221 and a cross-sectional dimension of the reinforcing mounting member 222 is larger than that of the mounting boss 221, and the reinforcing mounting member 222 is detachably coupled to the annular rim 1. As shown in fig. 2, in an embodiment, the mounting boss 221 is a solid cylindrical boss, the reinforcing mounting member 222 is in a thin plate shape, and the cross-sectional dimension of the reinforcing mounting member 222 is larger than that of the mounting boss 221, so that the connecting area of the connecting leg 22 and the annular rim 1 is increased, the weight of the connecting leg 22 can be reduced, and the connecting and supporting strength can be improved by matching with the mounting boss 221. In other embodiments, the shape of the connecting leg 22 can be set according to the actual use requirement, and the invention is not limited thereto.

In the embodiment of the present invention, the annular rim 1 includes the annular outer cylinder 11 and the plurality of support legs 12 disposed on the inner wall of the annular outer cylinder 11, and the support legs 12 protrude toward the hub main body 21 and are connected with the reinforcing mounting member 222 through the connecting members 5 in a one-to-one correspondence. In the embodiment, the plurality of connecting legs 22 and the supporting legs 12 are connected in alignment with each other, so that the annular wheel rim 1 and the hub disk 2 can be ensured to be aligned in the center. The support leg 12 and the reinforcing mounting member 222 are fastened together by the connecting member 5, and the annular rim 1 is prevented from shifting in the wheel axial direction, as shown in fig. 3, which is the left-right direction.

In one embodiment, the connecting piece 5 is a bolt, the bolt is engaged with a threaded hole formed in the supporting leg 1 through a through hole formed in the reinforcing installation piece 222, a buffer piece 6 and an anti-abrasion piece 7 are sequentially arranged between the connecting piece 5 and the reinforcing installation piece 222, and the buffer piece 6 can be an elastic cushion and can prevent the bolt from loosening due to bumping in the driving process of the hub 100 of the non-pneumatic tire; the wear-resistant member 7 may be a flat pad, which prevents the excessive torque from damaging the paint coating on the surface of the reinforcing attachment member 222 during the fastening process of the bolt. In another embodiment, the threaded holes formed in the supporting legs 12 can be changed into through holes, and in other embodiments, pins can be used instead of bolts, and the pins sequentially penetrate through the reinforcing installation part 222 and the supporting legs 12 to be connected with the supporting legs 12 in a clamping mode through buckles.

In one embodiment, the hub 100 of the non-pneumatic tire is formed by tightly connecting the annular rim 1 and the hub plate 2 through 4 connecting legs 22 and supporting legs 12 which are uniformly distributed, and in other embodiments, the number of the connecting legs 22 and the number of the supporting legs 12 are not limited to 4, and can be 2, 3, 5, 6 or more.

Wherein the support leg 12 comprises a support boss 121 and a reinforcing support 122; the support boss 121 is disposed on the annular outer cylinder 11 and extends in the wheel radial direction; the reinforcing supporter 122 is disposed at the inner end of the supporting boss 121, the reinforcing supporter 122 has a cross-sectional size larger than that of the supporting boss 121, and the connector 5 sequentially penetrates the reinforcing installation member 222 and the reinforcing supporter 122. As shown in fig. 2 and 3, in an embodiment, the supporting boss 121 is a solid cylindrical boss, the reinforcing support 122 is a thin plate-shaped structure, and the solid boss and the reinforcing support 122 with a large area cooperate to ensure the supporting strength and the supporting area of the supporting leg 12, so as to improve the supporting stability of the supporting leg 12 and further improve the service life of the annular rim 1. In order to improve the connection strength between the annular rim 1 and the hub 2, at least two connecting members 5 may be provided on the reinforcing support 122.

In the embodiment of the present invention, the hub 100 of the non-pneumatic tire further includes an adjusting shim 3, an adjusting gap 4 is formed between the reinforcing installation member 222 and the reinforcing support member 122, and the adjusting shim 3 is disposed in the adjusting gap 4 and used for adjusting the supporting length of the annular rim 1 and the hub main body 21. When the annular rim 1 and the hub disk 2 in the embodiment are actually installed, the adjusting gap 4 is reserved between the reinforcing installation piece 222 and the reinforcing support piece 122 to prevent interference caused by manufacturing errors, the supporting length is adjusted through the adjusting gaskets 3 with different thicknesses, and the supporting length is adjusted to be proper and then fastened and connected through the connecting piece 5.

In the present embodiment, the reinforcing support 122 and the reinforcing mounting member 222 are shaped to match. As shown in fig. 3 to 5, the reinforcing support 122 and the reinforcing mounting member 222 in this embodiment can both use a connecting flange in the prior art, and connect the annular rim 1 and the hub disk 2 through the connecting flange and the connecting member 5, so that the annular rim 1 and the hub disk 2 are tightly fitted and can be easily detached.

Strengthen support piece 122 including the reinforcing part that is located the middle part and the connecting portion at reinforcing part both ends, make and strengthen support piece 122 and be the little structural style in big both ends in the middle, set up the through-hole that supplies connecting piece 5 to pass on the connecting portion, when connecting piece 5 was bolt or screw, strengthen the screw hole that installed part 222 offered and connecting piece 5 threaded connection. In this embodiment, the reinforcing support 122 and the reinforcing mounting member 222 are matched in shape, so that the annular rim 1 and the hubcap 2 can be conveniently installed in a contraposition manner, and the condition that the annular rim 1 and the hubcap 2 are mutually staggered and inclined is avoided.

In an embodiment, strengthen support piece 122 and strengthen installed part 222 and all unanimous with adjusting shim 3's shape, size, 2 through-holes of symmetric distribution on adjusting shim 3, adjusting shim 3's thickness can be divided into specifications such as 0.5mm, 1mm, 2mm, can use according to the width collocation in adjustment clearance 4 during actual assembly.

In the embodiment of the present invention, the inner wall of the annular outer cylinder 11 is provided with a plurality of first reinforcing ribs 13, and one first reinforcing rib 13 is connected between any two adjacent supporting legs 12. The first reinforcing rib 13 in the present embodiment is formed in an arc-shaped elongated shape and extends in the wheel radial direction of the non-pneumatic tire 200 to structurally reinforce the annular outer cylinder 11, thereby improving the support strength of the annular rim 1. In addition, the hub main body 21 in this embodiment is provided with a plurality of second ribs 23, and one second rib 23 is connected between any two adjacent connecting legs 22. The hub main body 21 is disc-shaped, and the second reinforcing ribs 23 extend outward in the wheel radial direction from the outer edge of the hub main body 21 and are arc-shaped and long. In other embodiments, the shapes of the first reinforcing rib 13 and the second reinforcing rib 23 may be set according to actual use requirements, and the present invention is not limited thereto.

In the embodiment of the present invention, the first reinforcing ribs 13 are provided in the middle of the annular outer tube 11 in the wheel axial direction of the non-pneumatic tire 200. A plurality of supporting legs 12 set up in the inner wall of annular urceolus 11 along wheel circumferential direction interval to being located the position that is close to annular urceolus 11 middle part along the width direction of annular urceolus 11, can guaranteeing that supporting legs 12 cause extruded force balance to annular urceolus 11, avoid the application of force skew too big, and cause the local deformation damage's of annular urceolus 11 the condition.

The present invention also provides a non-pneumatic tire 200, wherein the non-pneumatic tire 200 comprises a non-pneumatic thin bead 210 and the hub 100 of the non-pneumatic tire as described above, and the specific structure of the hub 100 of the non-pneumatic tire is as described above with reference to the above embodiments. Since the non-pneumatic tire 200 adopts all the technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here. The non-inflatable thin tire bead 210 surrounds the outer side of the annular rim 1 and can be connected with the annular rim 1 into a whole in a bonding mode, when the non-inflatable thin tire bead 210 needs to be replaced, only the non-inflatable thin tire bead 210 and the annular rim 1 bonded with the non-inflatable thin tire bead 210 need to be replaced, the hub plate 2 can still be recycled after being detached from the annular rim 1, and compared with the whole replacement of a tire in the prior art, the replacement cost of the non-inflatable tire 200 is reduced.

The utility model discloses again provide an engineering vehicle, engineering vehicle include as above non-pneumatic tire 200, this non-pneumatic tire 200's concrete structure refers to above-mentioned embodiment. Since the engineering vehicle adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here. In one embodiment, non-pneumatic tire 200 may be applied to a scissor aerial work platform.

In one embodiment, the engineering vehicle is an aerial work platform comprising a non-pneumatic tire 200, an outer tire of the aerial work platform tire in the prior art is usually made of rubber, and the outer tire and a rim are integrally vulcanized and formed, so that after long-time use, the outer tire is worn and needs to be replaced, and because the outer tire and the rim are of an integral structure, the outer tire cannot be independently peeled off from the rim, and the maintenance and replacement need to be integrally replaced; compared with the aerial work platform tire in the prior art, the non-pneumatic tire 200 in the embodiment can independently replace the hub plate 2, so that the maintenance and use cost of the aerial work platform is reduced.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "secured" are to be construed broadly and can, for example, be connected or detachably connected or integrated; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A hub for a non-pneumatic tire, characterized in that said hub (100) for a non-pneumatic tire comprises:

an annular rim (1) for connection with a thin non-pneumatic bead (210) of a non-pneumatic tyre (200);

the hub disc (2) comprises a hub main body (21) and a plurality of connecting legs (22), wherein the hub main body (21) is used for connecting the non-pneumatic tire (200) with a driving device, the connecting legs (22) are arranged on the hub main body (21) at intervals along the circumferential direction of the non-pneumatic tire (200), and the annular wheel rim (1) is arranged outside the hub main body (21) in a surrounding mode and is detachably connected with the hub main body (21) through the connecting legs (22).

2. A hub for a non-pneumatic tyre as claimed in claim 1, wherein said connecting leg (22) comprises:

a mounting boss (221) provided to the hub main body (21) and extending in a wheel radial direction of the non-pneumatic tire (200);

and the reinforcing installation part (222) is arranged at the outer end of the installation boss (221), the cross section size of the reinforcing installation part (222) is larger than that of the installation boss (221), and the reinforcing installation part (222) is detachably connected with the annular wheel rim (1).

3. The hub of a non-pneumatic tire according to claim 2, wherein said annular rim (1) includes an annular outer cylinder (11) and a plurality of support legs (12) provided on an inner wall of said annular outer cylinder (11), said support legs (12) projecting toward said hub main body (21) and being connected to said reinforcement mounting members (222) in one-to-one correspondence via connecting members (5).

4. A hub for a non-pneumatic tyre as claimed in claim 3, wherein said supporting legs (12) comprise:

a support boss (121) provided to the annular outer cylinder (11) and extending in the wheel radial direction;

and the reinforcing support (122) is arranged at the inner end of the supporting boss (121), the cross section size of the reinforcing support (122) is larger than that of the supporting boss (121), and the connecting piece (5) penetrates through the reinforcing installation piece (222) and the reinforcing support (122) in sequence.

5. The hub of a non-pneumatic tire according to claim 4, wherein the hub (100) further comprises an adjustment spacer (3), an adjustment gap (4) being formed between the reinforcement mounting (222) and the reinforcement support (122), the adjustment spacer (3) being disposed in the adjustment gap (4) and being adapted to adjust a mounting distance of the annular rim (1) and the hub body (21).

6. A hub for a non-pneumatic tyre as claimed in claim 4, wherein the reinforcing support (122) and the reinforcing mounting (222) are of matching shape.

7. A hub for a non-pneumatic tyre as claimed in claim 3, wherein the inner wall of said annular outer tube (11) is provided with a plurality of first ribs (13), one first rib (13) being connected between any adjacent two of said support legs (12).

8. The hub of a non-pneumatic tire according to any one of claims 2 to 6, wherein a plurality of second reinforcing ribs (23) are provided on the hub main body (21), and one second reinforcing rib (23) is connected between any adjacent two of the connecting legs (22).

9. A non-pneumatic tyre, characterized in that said non-pneumatic tyre (200) comprises a non-pneumatic thin bead (210) and a hub (100) of the non-pneumatic tyre according to any one of claims 1 to 8.

10. A work vehicle, characterized in that it comprises a non-pneumatic tyre (200) according to claim 9.