Caterpillar band grouser structure with curved surface

Abstract

A caterpillar band grouser structure with a curved surface comprises a grouser of a long-strip-shaped structure, the length direction of the grouser is parallel to the width direction of a caterpillar band, the two sides, in the thickness direction, of the grouser are a base face and a bottom face which are parallel to each other, the base face is used for being connected with the surface of the caterpillar band, and the side, in the width direction, of the grouser is a soil backing plane deviating from the movement direction of the grouser. The other side, in the width direction, of the grouser is a bulldozing arc surface facing the movement direction of the grouser, the soil backing plane is perpendicular to the bottom face, the axis of the bulldozing arc surface and the bottom face are located on the same datum plane, and the axis of the bulldozing arc surface is located on the side, away from the soil backing plane, of the bottom face in the movement direction of the grouser. The axis of the bulldozing arc surface is parallel to the length direction of the grouser, and the radius of the bulldozing arc surface is not smaller than the thickness of the grouser. Compared with an existing linear crawler belt, the crawler belt with the curved surface type grouser structural characteristics has the advantages that the adhesive force is obviously improved, the energy consumption of the grouser entering and exiting from the soil can be reduced when the crawler belt faces complex and severe road conditions, and normal running of vehicles is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the track's track thorn structure technical field especially relates to a track track thorn structure with curved surface. BACKGROUND

[0002] The all-terrain engineering vehicle is usually divided into wheel type, foot type and track type as the agricultural equipment carrying base under complex terrain conditions, compared with the other two, the track type all-terrain vehicle has the advantages of small ground pressure, strong climbing ability, small turning radius and strong obstacle crossing ability, and has gradually become the preferred carrying base of agricultural intelligent equipment in mountainous and hilly areas. The track type vehicle is widely used in forestry, agriculture, mining and other fields due to its large contact area with soil, good passability and good soil adhesion performance. When the track vehicle drives on hilly soft soil, it is prone to skidding due to insufficient adhesion, which changes the driving performance and seriously affects its passability. The track thorn structure is an important component for enhancing the adhesion and friction between the track and the ground, and its structure has an extremely important influence on the adhesion performance of the track type vehicle. The existing track thorn structure is a straight line type track thorn, that is, a long rectangular track thorn structure, although the adhesion is improved by various design methods, the limitations of the straight line type track thorn structure still restrict the adhesion of the track. SUMMARY

[0003] The utility model provides a track track thorn structure with curved surface can promote the adhesion of track.

[0004] The utility model discloses a kind of track track thorn structures with curved surface, which can improve the adhesion of track.

[0005] Preferably, the radius of the earth-moving arc surface is equal to the thickness of the track thorn.

[0006] Preferably, the length of the track thorn is equal to the width of the track.

[0007] According to the above technical solution, the utility model has the beneficial effects of:

[0008] Compared with the existing linear type track, the curved surface type track changes the surface of the soil pushed by the track into an arc surface, simulation result analysis shows that the adhesion of the curved surface type track structure feature is obviously improved compared with the existing linear type track, so that the track can be applicable to different road conditions, when facing complex and poor road conditions, the soil entering and exiting energy consumption of the track can be reduced, the adhesion of the soil to the track is improved, which is beneficial to the track vehicle to get rid of danger when sinking or slipping, and the normal driving of the vehicle is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is a schematic view of the curved surface type track;

[0010] Figure 2 It is a partial schematic view of the track provided with the curved surface type track;

[0011] Figure 3 It is a side view of the curved surface type track;

[0012] Figure 4 It is a side view of the track when the minimum radius is adopted.

[0013] Marked in the figure: 1, track, 2, track, 3, base surface, 4, bottom surface, 5, soil back plane, 6, earthmoving arc surface. DETAILED DESCRIPTION

[0014] Referring to the drawings, the specific implementation is as follows:

[0015] As shown in Figure 1 , 2 , a track track structure with a curved surface comprises a track 1 in a long strip structure, the length direction of the track 1 is parallel to the width direction of the track 2, the length of the track 1 is equal to the width of the track 2, the two sides of the track 1 along the thickness direction are the base surface 3 and the bottom surface 4 which are parallel to each other, the base surface 3 is used to connect with the surface of the track 2, one side of the track 1 along the width direction is the soil back plane 5 which is away from the movement direction of the track 1, the other side of the track 1 along the width direction is the earthmoving arc surface 6 which is towards the movement direction of the track 1, the soil back plane 5 is perpendicular to the bottom surface 4, and the soil back plane 5 extends along the length direction of the track.

[0016] As shown in Figure 1 , 3 , the axis of the earthmoving arc surface 6 and the bottom surface 4 are located in the same reference plane, and the axis of the earthmoving arc surface 6 is located on the side of the bottom surface 4 away from the soil back plane 5 along the movement direction of the track 1, the axis of the earthmoving arc surface 6 is parallel to the length direction of the track 1, and the radius of the earthmoving arc surface 6 is not less than the thickness of the track 1. That is, from Figure 3From the side view, the tangent of the bulldozer arc surface 6 at the connection position with the bottom surface 4 is perpendicular to the bottom surface 4 and parallel to the back-soil plane 5, and the position where the other side of the bulldozer arc surface 6 extends to the crawler 2 will change according to the radius of the bulldozer arc surface 6. When the radius of the bulldozer arc surface 6 is the smallest, it is Figure 4 The radius of the bulldozer arc surface 6 is equal to the thickness of the spur 1. At this time, the tangent of the bulldozer arc surface 6 at the connection position with the base surface 3 is located on the base surface 3, and the arc angle of the bulldozer arc surface 6 is 90°.

[0017] Different radii of the bulldozer arc surface 6 will have different effects on the overall adhesion of the track 2. Therefore, a single-body model of the track with curved spurs is established by using three-dimensional software, and then the track model is obtained through the single-body array. The driving wheel, supporting wheel and guide wheel models are created and the vehicle body model is assembled to obtain the whole vehicle model. Then, a ground system is established in the simulation software, the whole vehicle model is loaded on the ground system, and a soil bed model is established on the ground system to establish a track-soil coupling simulation model. The coupling simulation of the interaction between the track and the soil is performed through a step-by-step iterative method, the radius of the bulldozer arc surface of the curved spur is changed, and multiple simulations are performed using whole vehicle models with different radii. The adhesion of the track is calculated based on the multiple simulation results, and the adhesion of the track under different radii is compared.

[0018] This embodiment uses five different spur structures for comparative simulation experiments, among which four spur structures are curved spurs with a bottom width of 12 mm and a thickness of 12 mm, and the radii are respectively R Ⅰ =12mm, R Ⅱ =15mm, R Ⅲ =18mm and R Ⅳ =24mm. A linear spur is used as a comparison. Its width and thickness are 12mm, and its length is the same as that of the four curved spurs. After simulation and adhesion calculation, the results are shown in the table below.

[0019] Table 1 Comparison of average adhesion of tracks with different spur types

[0020]

[0021] The actual test results show that under the same working conditions, the adhesion of the curved grouser is improved than that of the straight grouser, and the improvement ratio of the curved grouser on adhesion increases with the decrease of the grouser curvature radius. This is because the soil particles interact more with the grouser cutting the soil surface, which can provide a greater reaction force, which is beneficial to enhance the adhesion performance between the grouser and the soil.

Claims

1. A crawler spur structure with a curved surface, characterized in that: The invention comprises a spur (1) of long strip structure, wherein the length direction of the spur (1) is parallel to the width direction of the crawler (2), and the two sides of the spur (1) along the thickness direction are a base surface (3) and a bottom surface (4) parallel to each other, the base surface (3) is used to connect with the surface of the crawler (2), one side of the spur (1) along the width direction is a back-soil plane (5) away from the movement direction of the spur (1), and the other side of the spur (1) along the width direction is a push-up arc surface (6) facing the movement direction of the spur (1), the back-soil plane (5) and the bottom surface (4) are perpendicular to each other, the axis of the push-up arc surface (6) and the bottom surface (4) are located in the same reference plane, and the axis of the push-up arc surface (6) is located on the side of the bottom surface (4) away from the back-soil plane (5) along the movement direction of the spur (1), the axis of the push-up arc surface (6) is parallel to the length direction of the spur (1), and the radius of the push-up arc surface (6) is not less than the thickness of the spur (1).

2. The crawler spur structure with a curved surface according to claim 1, characterized in that: The radius of the bulldozer arc surface (6) is equal to the thickness of the shoe spur (1).

3. The crawler spur structure with a curved surface according to claim 1, characterized in that: The length of the spur (1) is equal to the width of the crawler track (2).

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