Traction belt, especially bogie belt

Abstract

Traction belt, in particular a bogie belt (1) designed as an endless belt for arrangement on tires (2a, 2b) of vehicles, in particular forestry vehicles, comprising an inner side (3) which, in the mounted state of the traction belt (1), faces the vehicle tires (2a, 2b), and an outer side (4) which, in the mounted state of the traction belt (1), faces away from the vehicle tires (2a, 2b), characterized in that at least two opposing profile blocks (5) are arranged on the outer side (4) of the traction belt (1), between which at least one profile strip (6) is arranged.

Description

[0001] The present invention relates to a traction belt, in particular a bogie belt designed as an endless belt, for arrangement on tires of vehicles, in particular forestry vehicles, comprising an inner side which, in the mounted state of the traction belt, faces the vehicle tires, and an outer side which, in the mounted state of the traction belt, faces away from the vehicle tires.

[0002] Such traction tracks, also known as support tracks, are known from the prior art. These traction tracks are arranged around the usually two to three wheels of a vehicle, such as a forestry vehicle, which are arranged one behind the other. The tires are typically pneumatic rubber tires. Such a traction track in the form of a bogie track with a corresponding land vehicle for forestry is known, for example, from EP 2 195 228 B1 and DE 10 2016 010 553 A1. These traction tracks increase the load-bearing capacity on soft soils by enlarging the contact area on the ground. Using these traction tracks, the number of tires on the forestry vehicle can be kept to a minimum. Furthermore, these tracks can be used to reduce point loading on the subsoil.

[0003] One disadvantage of current traction belts is their lack of stability, especially on steep terrain. Grip on soft ground is often lacking, which can cause the traction belts to "spin" when accelerating too quickly on wet or soft surfaces.

[0004] The present invention is based on the object of overcoming the disadvantages of prior art traction belts. In particular, the present invention is based on the object of providing a traction belt of the type mentioned above that enables improved grip and stability, particularly on soft and / or steep terrain.

[0005] This object is achieved according to the invention by a traction belt, in particular a bogie belt, of the type mentioned at the outset, which is characterized in that at least two opposing profile blocks are arranged on the outer side of the traction belt, between which at least one profile strip is arranged.

[0006] Field tests have shown that the inventive combination of two opposing profile blocks, between which at least one profile strip is arranged, provides particularly good grip and stability on soft and / or steep terrain.

[0007] It is advantageous if the tread blocks are positioned transversely to a running direction A. This arrangement of the tread blocks ensures particularly good grip on soft and / or steep terrain.

[0008] In a particularly preferred embodiment of the traction belt according to the invention, the at least one profile strip connects the opposing profile blocks to one another and forms a profile element with them, with the profile blocks preferably being integrally connected to the profile strip. This embodiment significantly increases stability on steep terrain.

[0009] In a particularly preferred embodiment of the traction belt according to the invention, a plurality of pairs of opposing tread blocks, in particular a plurality of tread elements, are provided. This enormously increases the grip of the traction belt according to the invention on soft and / or steep ground.

[0010] In a particularly preferred embodiment of the traction track according to the invention, the profile blocks have a greater height h than the profile strips, so that the profile blocks of a profile element protrude beyond the at least one profile strip of the profile element. This further increases stability and grip on soft and / or steep terrain.

[0011] With this design, the tread blocks are initially pressed into the ground when driving, which initially increases grip and stability. When the individual tread blocks are then so far into the ground that the section of the tread blocks projecting beyond the tread strips is completely in the ground, the tread strips of the tread elements are also pressed into the ground, thus achieving a further increase in grip. On harder ground, the sections of the tread blocks projecting beyond the tread strips are generally not completely pressed into the ground, so that the tread strips are also still above the ground. This ensures that a vehicle equipped with traction strips according to the invention can be driven optimally on such terrain without forming too strong a bond with such a ground.Only when the terrain becomes steep or softer are the profile elements pressed so far into the ground that the profile strips are also pressed completely or partially into the ground, thus providing optimal grip.

[0012] Advantageously, the profile blocks are cuboid-shaped, and the at least one profile strip is preferably designed as an elongated plate. Such a shape of the profile blocks and profile strips has proven particularly effective for the aforementioned purposes. Furthermore, such shapes are particularly simple and cost-effective to manufacture.

[0013] The traction belt according to the invention is advantageously characterized by a plurality of hingedly connected belt segments, with each belt segment preferably having a profile element. Such an embodiment has proven particularly simple to manufacture.

[0014] As a rule, the belt segments are designed as elongated plates, with a bevel arranged parallel to the long side and directed towards the inside of the traction belt preferably being provided in the region of one long side of a belt segment. This bevel running towards the inside prevents the individual belt segments from becoming wedged during the unwinding process. This ensures a smooth unwinding process when using the traction belt according to the invention. Preferably, a further bevel is provided in the region of the other long side of the belt segment, arranged parallel to this side and directed towards the outside of the traction belt. This contributes to even better interaction between the individual belt segments.

[0015] The individual band segments can be connected to each other via connecting ropes or similar connecting devices.

[0016] Typically, the traction belt according to the invention is made of metal, preferably steel. This material has proven particularly robust and effective in solving the aforementioned tasks.

[0017] The present invention further relates to a vehicle, in particular a forestry vehicle, comprising at least four tires and at least two traction belts according to the invention.

[0018] In the vehicle according to the invention, a traction band preferably spans at least two tires of the vehicle arranged one behind the other.

[0019] Further features of the invention will become apparent from the following description of preferred embodiments of the invention in conjunction with the drawings and the subclaims. The individual features may be implemented individually or in combination with one another.

[0020] The drawings show: Fig. 1: a perspective view of a bogie band according to the invention, which spans two tires of a vehicle according to the invention; Fig. 2: a perspective view of a band segment of the bogie band according to Fig. 1; Fig. 3: a side view of the band segment according to Fig. 2.

[0021] In the following, identical or functionally equivalent elements are marked with the same reference numbers.

[0022] Fig. Figure 1 shows a bogie track 1 according to the invention, which is mounted on two tires 2a, 2b arranged one behind the other. The tires 2a and 2b belong to a forestry vehicle (not shown here).

[0023] The two tires 2a and 2b run one behind the other in the same track. Tires 2a and 2b are air-filled rubber tires. Both tires 2a and 2b are driven tires, meaning they are each coupled to the vehicle's power source via drives such as gears, chains, or other mechanical transmissions or hydraulic drives, and are not rotated solely by the bogie track 1. One advantage of this solution is that, with low load-bearing requirements, the vehicle can be driven without bogie tracks without any disadvantages.

[0024] The bogie belt 1 can be closed endlessly in the circumferential direction or in a running direction A of the vehicle. The bogie belt 1 comprises an inner side 3, which, when the bogie belt 1 is mounted, faces the vehicle tires 2a, 2b. The bogie belt 1 further comprises an outer side 4, which, when the bogie belt 1 is mounted, faces away from the vehicle tires 2a, 2b and toward the ground.

[0025] A plurality of profile blocks 5 are arranged on the outer side 4 of the bogie belt 1, wherein the profile blocks 5 are arranged in pairs. The paired profile blocks 5 are positioned opposite each other transversely to the running direction A. Between each pair of 7 profile blocks, a profile strip 6 is arranged. Each pair of profile blocks 7 forms a profile element 8 with a profile strip 6.

[0026] The bogie belt 1 comprises a plurality of belt segments 9 which are connected to one another in an articulated manner, each belt segment 9 having a profile element 8. Fig. Figure 2 shows one of the belt segments 9 with a profile element 8, which supports two opposing profile blocks 5 forming a profile block pair 7. A profile strip 6 is provided between the profile blocks 5. The profile strip 6 connects the two profile blocks 5 forming a pair 7 and is integrally connected to them in the present embodiment. In this embodiment, the individual profile elements 8 can be manufactured particularly easily and cost-effectively.

[0027] As in the Fig. As can also be clearly seen in Figure 2, the profile blocks 5 have a greater height h1 than the profile strips 6, so that the profile blocks 5 of a profile element 8 protrude beyond the profile strips 6 of the profile elements 8. These different heights between the profile blocks 5 (h1) and the profile strips 6 (h2) allow the aforementioned advantages to be achieved. In particular, such a design achieves excellent stability even on steep terrain and generally good grip even on soft ground. Furthermore, grip on hard ground is also optimized.

[0028] In the present embodiment, the profile blocks 5 are cuboid-shaped, and the profile strips 6 are elongated plates. This ensures particularly good grip of the forestry vehicle, even under unfavorable ground conditions.

[0029] The individual belt segments 9 are designed as elongated plates. A bevel 11a, 11b is provided at a short distance from each of the two longitudinal sides 10 of a belt segment 9. One bevel 11a runs in the direction of the tires 2a, 2b. The second bevel 11b runs in the opposite direction, i.e., away from the wheels 2a, 2b.

[0030] In the area of the two narrow sides 12 of a belt segment 9, guide elements 13 are provided which touch the end faces of the tires 2a, 2b and contribute to a firm fit of the bogie belt 1 on the wheels 2a, 2b.

[0031] As in the Fig. As can be clearly seen in Figure 1, the bogie track 1 slightly protrudes beyond the tires 2a, 2b on both sides. In conjunction with the guide elements 13, this ensures a particularly good fit of the bogie track 11 on the tires 2a and 2b.

[0032] In the present embodiment, the bogie belt 1 is made of steel. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] EP 2 195 228 B1

[0002] DE 10 2016 010 553 A1

[0002]

Claims

[1] Traction belt, in particular a bogie belt (1) designed as an endless belt for arrangement on tires (2a, 2b) of vehicles, in particular forestry vehicles, comprising an inner side (3) which, in the mounted state of the traction belt (1), faces the vehicle tires (2a, 2b), and an outer side (4) which, in the mounted state of the traction belt (1), faces away from the vehicle tires (2a, 2b), characterized by that at least two opposing profile blocks (5) are arranged on the outer side (4) of the traction belt (1), between which at least one profile strip (6) is arranged. [2] Traction band according to claim 1, characterized by that the profile blocks (5) are opposite each other transversely to a running direction A of the traction belt (1). [3] Traction band according to one of claims 1 or 2, characterized bythat the at least one profile strip (6) connects the opposing profile blocks (5) to one another and forms a profile element (8) with them, wherein the profile blocks (5) are preferably connected in one piece with the profile strip (6). [4] Traction band according to one of the preceding claims, in particular according to claim 3, characterized by that a plurality of pairs (7) of opposing profile blocks (5), in particular a plurality of profile elements (8) are provided. [5] Traction band according to one of the preceding claims, in particular according to claim 3, characterized by that the profile blocks (5) have a greater height h than the profile strips, so that the profile blocks (5) of a profile element (8) project beyond the at least one profile strip (6) of the profile element (8). [6] Traction band according to one of the preceding claims, characterized bythat the profile blocks (5) are cuboid-shaped and the at least one profile strip (6) is preferably designed as an elongated plate. [7] Traction band according to one of the preceding claims, in particular according to claim 3, characterized by a plurality of hingedly connected band segments (9), wherein preferably each band segment (9) has a profile element (8). [8] Traction band according to claim 7, characterized by that the belt segments (9) are designed as elongated plates, wherein preferably two folds (11a, 11b) arranged parallel to the longitudinal sides (10) of a belt segment are provided, wherein one fold (11a) is oriented towards the inner side (3) and one fold (11b) is preferably oriented towards the outer side (4) of the bogie belt (1). [9] Traction band according to one of the preceding claims, characterized by that it is made of metal, preferably steel. [10] Vehicle, in particular forestry vehicle, comprising at least four tires (2a, 2b) and at least two traction belts (1) according to one of claims 1 to 9. [11] Vehicle according to claim 10, characterized by that a traction band (1) spans at least two tires (2a, 2b) of the vehicle arranged one behind the other.

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