Solid tire

Abstract

The utility model provides a solid tire which comprises a tread and a tire shoulder, the tire shoulder is provided with a plurality of oval grooves, the oval grooves are arranged at intervals in the circumferential direction of the solid tire, and each oval groove is sunken in the direction away from the tire shoulder of the solid tire in the axial direction of the solid tire. And the long axis of the elliptical groove extends along the radial direction of the solid tire. The solid tire solves the problem that the service life is shortened due to poor heat dissipation of the solid tire in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of solid tires, and particularly to a solid tire. Background Art

[0002] A solid tire is an elastic solid tire with a solid structure made of rubber. The structure of the solid tire is mainly composed of annular layers stacked one on top of the other in the radial direction. The annular layer spreads from the center of the solid tire to the edge, forming at least an inner component (base rubber) and an outer component (tread rubber). If the operating environment has requirements for heat dissipation, an intermediate rubber for heat dissipation can also be added between the base rubber and the tread rubber. Solid tires have the advantages of large load-bearing capacity, puncture resistance, no need for inflation, convenient later maintenance, and long service life.

[0003] However, since the solid tire has a solid structure, if the vehicle load is too high and the speed is too fast during driving, the heat generation speed inside the solid tire will be faster than the heat dissipation speed, resulting in accelerated wear of the solid tire and shortened service life. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a solid tire to solve the problem of shortened service life caused by poor heat dissipation of the solid tire in the prior art.

[0005] To achieve the above purpose, the utility model provides a solid tire, including: a tread and a shoulder. A plurality of oval grooves are arranged on the shoulder, and the plurality of oval grooves are arranged at intervals along the circumferential direction of the solid tire. Each oval groove is recessed in a direction away from the shoulder of the solid tire along the axial direction of the solid tire, and the major axis of the oval groove extends along the radial direction of the solid tire.

[0006] Furthermore, a stepped protrusion is arranged on the bottom of each oval groove, and a first marking line and a second marking line are arranged on the stepped protrusion. Along the radial direction of the solid tire, the first marking line and the second marking line are arranged at intervals, and the first marking line is arranged closer to the tread than the second marking line.

[0007] Furthermore, the solid tire has a tread center line extending along its circumferential direction. The oval groove has a first groove wall and a second groove wall arranged opposite to each other along the radial direction of the solid tire, and the first groove wall is arranged closer to the tread center line than the second groove wall. Along the radial direction of the solid tire, the distance between the tread center line and the first groove wall is H1, the distance between the first groove wall and the first marking line is H2, the distance between the first marking line and the second marking line is H3, and the distance between the second marking line and the wear line of the solid tire is H4, and H1:H2:H3:H4 = 1:1:1:1.

[0008] Furthermore, the stepped protrusion includes a first protrusion portion and a second protrusion portion. The first protrusion portion includes a first bottom surface and a first side surface, and the second protrusion portion includes a second bottom surface and a second side surface. Two sides of the first side surface are respectively connected to the first bottom surface and the second bottom surface, and two sides of the second side surface are respectively connected to the second bottom surface and the bottom of the elliptical groove. In the radial direction of the solid tire, the first bottom surface is disposed closer to the tread than the second bottom surface. The intersection line of the first bottom surface and the first side surface is used to form a first marking line, and the intersection line of the second bottom surface and the second side surface is used to form a second marking line.

[0009] Furthermore, the tread center line divides the tread of the solid tire into two tread portions, and a preset pattern is provided on each tread portion. The preset pattern includes a plurality of long transverse grooves, and the plurality of long transverse grooves are arranged at intervals in the circumferential direction of the solid tire. The first end of each long transverse groove is disposed closer to the tread center line, and the second end of each long transverse groove extends to the shoulder and penetrates through the shoulder.

[0010] Furthermore, the long transverse groove has a third groove wall and a fourth groove wall that are oppositely arranged in the circumferential direction of the solid tire. The long transverse groove is further provided with a fifth groove wall, and two sides of the fifth groove wall are respectively connected to the third groove wall and the fourth groove wall. The third groove wall extends along a first preset line segment, the fourth groove wall extends along a second preset line segment, and the fifth groove wall extends along a third preset line segment. The first preset line segment includes a first straight line segment and a first arc line segment that are connected to each other. The second preset line segment includes a second straight line segment and a second arc line segment. The third preset line segment includes a third straight line segment, a fourth straight line segment, a third arc line segment, and a fourth arc line segment. Two ends of the third straight line segment are respectively connected to one end of the first arc line segment and the third arc line segment. Two ends of the fourth straight line segment are respectively connected to the other end of the third arc line segment and one end of the fourth arc line segment. The other end of the fourth arc line segment is connected to the second arc line segment.

[0011] Furthermore, the angle between the first straight line segment and the tread center line is 78°. The distance between the intersection point of the first straight line segment and the first arc line segment and the shoulder is a first distance, and the first distance is 68.5% of the distance from the shoulder to the tread center line. The angle between the third straight line segment and the tread center line is 59°. The distance between the intersection point of the third straight line segment and the third arc line segment and the shoulder is a second distance, and the second distance is 80.1% of the distance from the shoulder to the tread center line. The angle between the fourth straight line segment and the tread center line is 0°. The angle between the second straight line segment and the tread center line is 76°, and the distance between the intersection point of the second straight line segment and the second arc line segment and the shoulder is a third distance, and the third distance is 70.3% of the distance from the shoulder to the tread center line.

[0012] Further, the preset pattern further includes a plurality of first longitudinal grooves, each of the first longitudinal grooves being disposed between two adjacent long transverse grooves. The first end of each first longitudinal groove communicates with one of the two long transverse grooves, and the second end of each first longitudinal groove communicates with the other of the two long transverse grooves.

[0013] Further, the first longitudinal groove has a ninth groove wall and a sixth groove wall that are oppositely disposed along the axial direction of the solid tire. The ninth groove wall is disposed closer to the tread center line than the sixth groove wall. The sixth groove wall extends along a fourth preset line segment, and the fourth preset line segment includes a fifth straight line segment and two fifth arc segments. The two ends of the fifth straight line segment are respectively connected to the two fifth arc segments, and the two fifth arc segments are respectively connected to a first preset line segment of one long transverse groove and a second preset line segment of the other long transverse groove. Wherein, the included angle between the fifth straight line segment and the tread center line is 10°, and the value range of the included angle c between the sixth groove wall and the normal line of the groove bottom of the first longitudinal groove is 3° ≤ c ≤ 8°.

[0014] Further, the preset pattern further includes a plurality of short transverse grooves, and the plurality of short transverse grooves are arranged in one-to-one correspondence with the plurality of oval grooves. The first end of each short transverse groove is disposed closer to the tread center line, and the second end of each short transverse groove extends to the tire shoulder and communicates with the corresponding oval groove. The short transverse groove has a seventh groove wall and an eighth groove wall that are oppositely disposed along the circumferential direction of the solid tire. The value range of the included angle d between the seventh groove wall and the normal line of the groove bottom of the short transverse groove is 5° ≤ d ≤ 10°, and the value range of the included angle e between the eighth groove wall and the normal line of the groove bottom of the short transverse groove is 15° ≤ e ≤ 25°.

[0015] Applying the technical solution of the present invention, the solid tire includes a tread and a tire shoulder. A plurality of oval grooves are provided on the tire shoulder, and the oval grooves are used for dissipating heat from the solid tire. The oval grooves improve the heat dissipation efficiency of the tread, thereby solving the problem in the prior art that the poor heat dissipation of the solid tire leads to a shortened service life, contributing to the rapid heat dissipation of the solid tire and extending the service life of the solid tire. At the same time, the oval structure can ensure the resistance of the oval grooves to external pressure, avoid stress concentration, and reduce the damage of the oval grooves caused by extrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0017] Figure 1 shows a schematic structural diagram of an embodiment of a solid tire according to the present invention;

[0018] Figure 2Shows a schematic structural view of the tread of a solid tire according to the present utility model;

[0019] Figure 3 Shows Figure 1 A cross-sectional view of the solid tire at A-A in

[0020] Figure 4 Shows Figure 1 A schematic cross-sectional view at B-B in

[0021] Figure 5 Shows Figure 1 A schematic cross-sectional view at C-C in

[0022] Figure 6 Shows Figure 1 A schematic cross-sectional view at D-D in

[0023] Figure 7 Shows Figure 1 A schematic cross-sectional view at E-E in

[0024] Figure 8 Shows Figure 1 A schematic cross-sectional view at F-F in

[0025] Figure 9 Shows Figure 1 A schematic cross-sectional view at G-G in

[0026] Wherein, the above-mentioned drawings include the following reference numerals:

[0027] 10, elliptical groove; 11, first marking line; 12, second marking line; 13, first groove wall; 14, second groove wall; 1, tread center line; 2, wear line; 15, first convex portion; 16, second convex portion; 151, first bottom surface; 152, first side surface; 161, second bottom surface; 18, long groove wall; 162, second side surface; 3, tread portion; 20, long transverse groove; 21, third groove wall; 22, fourth groove wall; 23, fifth groove wall; 24, first straight line segment; 25, first arc segment; 26, second straight line segment; 27, second arc segment; 28, third straight line segment; 29, fourth straight line segment; 291, third arc segment; 30, first longitudinal groove; 31, ninth groove wall; 32, sixth groove wall; 33, fifth straight line segment; 331, fifth arc segment; 40, short transverse groove; 41, seventh groove wall; 42, eighth groove wall. Detailed implementation mode

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0030] In the description of the present application, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. are usually based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present application; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0031] Please refer to Figures 1 to 9 , the present utility model provides a solid tire, including: a tread and a shoulder, wherein a plurality of oval grooves 10 are provided on the shoulder, the plurality of oval grooves 10 are arranged at intervals in the circumferential direction of the solid tire, each oval groove 10 is recessed in a direction away from the shoulder of the solid tire in the radial direction of the solid tire, and the major axis of the oval groove 10 extends in the radial direction of the solid tire.

[0032] The solid tire of the present utility model includes a tread and a shoulder. A plurality of oval grooves 10 are provided on the shoulder. The oval grooves 10 are used for dissipating heat from the solid tire. The oval grooves improve the heat dissipation efficiency of the tread, thereby solving the problem that the poor heat dissipation of the solid tire in the prior art leads to a shortened service life, contributing to the rapid heat dissipation of the solid tire and extending the service life of the solid tire. At the same time, the oval structure can ensure the resistance of the oval grooves to external pressure, avoid stress concentration, and reduce the damage of the oval grooves caused by extrusion.

[0033] In this embodiment, stepped protrusions are provided on the bottom of each oval groove 10. A first marking line 11 and a second marking line 12 are provided on the stepped protrusions. Along the radial direction of the solid tire, the first marking line 11 and the second marking line 12 are arranged at intervals, and the first marking line 11 is arranged closer to the tread than the second marking line 12.

[0034] In this embodiment, the solid tire has a tread center line 1 extending along its circumferential direction. The oval groove 10 has a first groove wall 13 and a second groove wall 14 arranged oppositely along the radial direction of the solid tire. The first groove wall 13 is arranged closer to the tread center line 1 than the second groove wall 14. Along the radial direction of the solid tire, the distance between the tread center line 1 and the first groove wall 13 is H1, the distance between the first groove wall 13 and the first marking line 11 is H2, the distance between the first marking line 11 and the second marking line 12 is H3, and the distance between the second marking line 12 and the wear line 2 of the solid tire is H4, and H1:H2:H3:H4 = 1:1:1:1.

[0035] Specifically, such a setting can clearly identify the usage situation of the solid tire, prompt the user of the wear degree and service life of the solid tire, so as to facilitate the user to replace the solid tire in time.

[0036] In this embodiment, the stepped protrusion includes a first protrusion part 15 and a second protrusion part 16. The first protrusion part 15 includes a first bottom surface 151 and a first side surface 152. The second protrusion part 16 includes a second bottom surface 161 and a second side surface 162. Both sides of the first side surface 152 are respectively connected to the first bottom surface 151 and the second bottom surface 161. Both sides of the second side surface 162 are respectively connected to the second bottom surface 161 and the bottom of the oval groove 10. Along the radial direction of the solid tire, the first bottom surface 151 is arranged closer to the tread than the second bottom surface 161. The intersection line of the first bottom surface 151 and the first side surface 152 is used to form the first marking line 11, and the intersection line of the second bottom surface 161 and the second side surface 162 is used to form the second marking line 12.

[0037] Specifically, the elliptical groove 10 has two long groove walls 18 oppositely arranged along the circumferential direction of the solid tire, and the included angle f between each long groove wall 18 and the normal line of the groove bottom of the elliptical groove 10 ranges from 1° ≤ f ≤ 5°; the included angle g between the second groove wall 14 and the normal line of the groove bottom of the elliptical groove 10 ranges from 7° ≤ g ≤ 12°.

[0038] In this embodiment, the tread center line 1 divides the tread of the solid tire into two tread parts 3, and a preset pattern is provided on each tread part 3. The preset pattern includes a plurality of long transverse grooves 20, and the plurality of long transverse grooves 20 are arranged at intervals along the circumferential direction of the solid tire. The first end of each long transverse groove 20 is arranged close to the tread center line 1, and the second end of each long transverse groove 20 extends to and penetrates the tire shoulder.

[0039] Specifically, since the first end of each long transverse groove 20 is arranged close to the tread center line 1, the tread blocks on the tread are not separated by the long transverse grooves 20, increasing the grounding area of the solid tire, improving the steering performance and driving stability of the solid tire, and reducing the rolling resistance of the solid tire.

[0040] Specifically, in the direction from the first end to the second end, the groove width of the long transverse groove 20 gradually increases, which is beneficial to the exclusion of sand and gravel entering the long transverse groove 20, and improves the self-cleaning property of the solid tire.

[0041] In this embodiment, the long transverse groove 20 has a third groove wall 21 and a fourth groove wall 22 oppositely arranged along the circumferential direction of the solid tire. The long transverse groove 20 is further provided with a fifth groove wall 23, and both sides of the fifth groove wall 23 are respectively connected to the third groove wall 21 and the fourth groove wall 22. The third groove wall 21 extends along a first preset line segment, the fourth groove wall 22 extends along a second preset line segment, and the fifth groove wall 23 extends along a third preset line segment. The first preset line segment includes a first straight line segment 24 and a first arc segment 25 connected to each other. The second preset line segment includes a second straight line segment 26 and a second arc segment 27. The third preset line segment includes a third straight line segment 28, a fourth straight line segment 29, a third arc segment 291 and a fourth arc segment. The two ends of the third straight line segment 28 are respectively connected to one end of the first arc segment 25 and one end of the third arc segment 291. The two ends of the fourth straight line segment 29 are respectively connected to the other end of the third arc segment 291 and one end of the fourth arc segment. The other end of the fourth arc segment is connected to the second arc segment 27.

[0042] Specifically, by connecting the first straight line segment 24 and the first arc segment 25, and by connecting the second straight line segment 26 and the second arc segment 27, the long transverse groove 20 adopts a combination of straight line segments and arc segments, increasing the length of the long transverse groove 20, enhancing the contact area and adhesion force between the solid tire and the ground, and ensuring the grip and traction of the solid tire.

[0043] Specifically, for the fifth groove wall 23 at the position of the third straight segment 28 and the fourth groove wall 22 at the position of the second arc segment 27, the value range of the included angle a between both of them and the normal line of the bottom of the long transverse groove 20 is 3° ≤ a ≤ 8°.

[0044] Specifically, for the third groove wall 21 at the position of the first straight segment 24 and the fourth groove wall 22 at the position of the second straight segment 26, the value range of the included angle b between both of them and the normal line of the bottom of the long transverse groove 20 is 5° ≤ b ≤ 10°.

[0045] In this embodiment, the included angle between the first straight segment 24 and the tread center line 1 is 78°. The distance between the intersection point of the first straight segment 24 and the first arc segment 25 and the tire shoulder is the first distance, and the first distance is 68.5% of the distance from the tire shoulder to the tread center line 1; the included angle between the third straight segment 28 and the tread center line 1 is 59°; the distance between the intersection point of the third straight segment 28 and the third arc segment 291 and the tire shoulder is the second distance, and the second distance is 80.1% of the distance from the tire shoulder to the tread center line 1; the included angle between the fourth straight segment 29 and the tread center line 1 is 0°; the included angle between the second straight segment 26 and the tread center line 1 is 76°, and the distance between the intersection point of the second straight segment 26 and the second arc segment 27 and the tire shoulder is the third distance, and the third distance is 70.3% of the distance from the tire shoulder to the tread center line 1.

[0046] In this embodiment, the preset tread pattern further includes a plurality of first longitudinal grooves 30. Each first longitudinal groove 30 is disposed between two adjacent long transverse grooves 20. The first end of each first longitudinal groove 30 communicates with one of the two long transverse grooves 20, and the second end of each first longitudinal groove 30 communicates with the other of the two long transverse grooves 20.

[0047] Specifically, the first longitudinal grooves 30 are used to connect and communicate each independent long transverse groove 20, ensuring the drainage performance of the solid tire.

[0048] In this embodiment, the first longitudinal groove 30 has a ninth groove wall 31 and a sixth groove wall 32 that are oppositely arranged along the axial direction of the solid tire. The ninth groove wall 31 is disposed closer to the tread center line 1 than the sixth groove wall 32. The sixth groove wall 32 extends along a fourth preset line segment. The fourth preset line segment includes a fifth straight segment 33 and two fifth arc segments 331. The two ends of the fifth straight segment 33 are respectively connected to the two fifth arc segments 331. The two fifth arc segments 331 are respectively connected to the first preset line segment of one long transverse groove 20 and the second preset line segment of the other long transverse groove 20; wherein, the included angle between the fifth straight segment 33 and the tread center line 1 is 10°, and the value range of the included angle c between the sixth groove wall 32 and the normal line of the bottom of the first longitudinal groove 30 is 3° ≤ c ≤ 8°.

[0049] Specifically, the included angle between the tangent line at the connection of the fifth arc segment 331 and the first preset segment of a long transverse groove 20 and the first straight segment 24 is an obtuse angle; the included angle between the tangent line at the connection of the fifth arc segment 331 and the second preset segment of the other long transverse groove 20 and the second straight segment 26 is an obtuse angle; such a setting further ensures the drainage performance of the solid tire, reduces the resistance of the accumulated water when the solid tire contacts the road surface, and improves the anti-slip performance of the solid tire.

[0050] Specifically, the included angle between the fifth straight segment 33 and the tread center line 1 is 10°, which ensures that the contact area between the tread and the ground gradually increases during the driving of the solid tire, not only enhancing the wear resistance of the solid tire but also reducing the occurrence of abnormal wear problems.

[0051] In this embodiment, the preset pattern further includes a plurality of short transverse grooves 40, and the plurality of short transverse grooves 40 and the plurality of oval grooves 10 are arranged in one-to-one correspondence. The first end of each short transverse groove 40 is arranged close to the tread center line 1, the second end of each short transverse groove 40 extends to the tire shoulder and is connected to the corresponding oval groove 10. The short transverse groove 40 has a seventh groove wall 41 and an eighth groove wall 42 that are oppositely arranged along the circumferential direction of the solid tire. The value range of the included angle d between the seventh groove wall 41 and the normal line of the groove bottom of the short transverse groove 40 is 5° ≤ d ≤ 10°, and the value range of the included angle e between the eighth groove wall 42 and the normal line of the groove bottom of the short transverse groove 40 is 15° ≤ e ≤ 25°.

[0052] Specifically, the setting of the short transverse groove 40 not only improves the anti-slip performance of the solid tire but also enhances the heat dissipation performance of the solid tire; the extending directions of the seventh groove wall 41 and the eighth groove wall 42 are arranged in parallel, and the included angle between the extending direction of the seventh groove wall 41 and the tread center line 1 is 80°.

[0053] Specifically, the tread blocks on the tread and the tire shoulder are all equidistant patterns, and the land-sea ratio of the preset pattern on the tread is 76% - 80%. Such a setting increases the contact area between the tread and the ground, makes the wear of the solid tire tread more uniform, helps to improve the wear resistance of the solid tire, and reduces the occurrence of abnormal wear.

[0054] Specifically, the setting of the preset pattern can evenly disperse the contact pressure between the solid tire and the ground, increase the heat dissipation area of the tread pattern, helps to reduce the heat accumulation of the tread, and extends the service life of the solid tire.

[0055] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

[0056] The solid tire of the present utility model comprises a tread and a tire shoulder. A plurality of oval grooves 10 are arranged on the tire shoulder. The oval grooves 10 are used for dissipating heat from the solid tire. The oval grooves improve the heat dissipation efficiency of the tread, thus solving the problem in the prior art that the poor heat dissipation of the solid tire leads to a shortened service life, facilitating the rapid heat dissipation of the solid tire and extending the service life of the solid tire. At the same time, the oval structure can ensure the resistance of the oval grooves to external pressure, avoid stress concentration and reduce the damage of the oval grooves caused by extrusion.

[0057] For the sake of description, spatial relative terms, such as "above", "over", "on the upper surface", "upper", etc., can be used here to describe the spatial position relationship between one device or feature and other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to cover different orientations in use or operation in addition to the orientation described in the figures of the device. For example, if the device in the figure is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0058] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above terms have no special meanings and thus should not be construed as limiting the protection scope of the present application.

[0059] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A solid tire, characterized in that: include: A tread and a shoulder, wherein a plurality of elliptical grooves (10) are arranged on the shoulder, and the plurality of elliptical grooves (10) are arranged at intervals along the circumferential direction of the solid tire, and each of the elliptical grooves (10) is recessed in the axial direction of the solid tire toward a direction away from the shoulder of the solid tire, and the major axis of the elliptical groove (10) extends along the radial direction of the solid tire.

2. The solid tire according to claim 1, characterized in that: A stepped protrusion is arranged on the bottom of each of the elliptical grooves (10), and a first marking line (11) and a second marking line (12) are arranged on the stepped protrusion; wherein, along the radial direction of the solid tire, the first marking line (11) and the second marking line (12) are arranged at intervals, and the first marking line (11) is arranged closer to the tread relative to the second marking line (12).

3. The solid tire according to claim 2, characterized in that: The solid tire has a tread center line (1) extending in its circumferential direction, and the elliptical groove (10) has a first groove wall (13) and a second groove wall (14) arranged opposite to each other in the radial direction of the solid tire, wherein the first groove wall (13) is arranged close to the tread center line (1) relative to the second groove wall (14); along the radial direction of the solid tire, the distance between the tread center line (1) and the first groove wall (13) is H1, the distance between the first groove wall (13) and the first marking line (11) is H2, the distance between the first marking line (11) and the second marking line (12) is H3, and the distance between the second marking line (12) and the wear line (2) of the solid tire is H4, and H1:H2:H3:H4=1:1:1:

1.

4. The solid tire according to claim 2, characterized in that: The stepped protrusion comprises a first protrusion (15) and a second protrusion (16); the first protrusion (15) comprises a first bottom surface (151) and a first side surface (152); the second protrusion (16) comprises a second bottom surface (161) and a second side surface (162); two sides of the first side surface (152) are respectively connected to the first bottom surface (151) and the second bottom surface (161); two sides of the second side surface (162) are respectively connected to the second bottom surface (161) and the groove bottom of the elliptical groove (10); along the radial direction of the solid tire, the first bottom surface (151) is arranged close to the tread relative to the second bottom surface (161); a boundary line between the first bottom surface (151) and the first side surface (152) is used to form the first marking line (11); and a boundary line between the second bottom surface (161) and the second side surface (162) is used to form the second marking line (12).

5. The solid tire according to claim 3, characterized in that: The tread centerline (1) divides the tread of the solid tire into two tread parts (3), each of the tread parts (3) is provided with a preset pattern, the preset pattern includes a plurality of long transverse grooves (20), the plurality of long transverse grooves (20) are arranged at intervals along the circumferential direction of the solid tire, the first end of each of the long transverse grooves (20) is arranged close to the tread centerline (1), and the second end of each of the long transverse grooves (20) extends to the tire shoulder and passes through the tire shoulder.

6. The solid tire according to claim 5, characterized in that: The long transverse groove (20) has a third groove wall (21) and a fourth groove wall (22) which are arranged opposite to each other in the circumferential direction of the solid tire. The long transverse groove (20) is also provided with a fifth groove wall (23). Both sides of the fifth groove wall (23) are respectively connected to the third groove wall (21) and the fourth groove wall (22). The third groove wall (21) is extended along a first preset line segment, the fourth groove wall (22) is extended along a second preset line segment, and the fifth groove wall (23) is extended along a third preset line segment. The first preset line segment includes a first straight line segment (24) and a first arc segment which are connected to each other. The first arc segment (25) is a line segment of a first arc segment (25), the second preset line segment includes a second straight line segment (26) and a second arc segment (27), the third preset line segment includes a third straight line segment (28), a fourth straight line segment (29), a third arc segment (291) and a fourth arc segment, the two ends of the third straight line segment (28) are respectively connected to the first arc segment (25) and one end of the third arc segment (291), the two ends of the fourth straight line segment (29) are respectively connected to the other end of the third arc segment (291) and one end of the fourth arc segment, and the other end of the fourth arc segment is connected to the second arc segment (27).

7. The solid tire according to claim 6, characterized in that: The angle between the first straight line segment (24) and the tread centerline (1) is 78°; the distance between the intersection of the first straight line segment (24) and the first arc segment (25) and the shoulder is a first distance, and the first distance is 68.5% of the distance from the shoulder to the tread centerline (1); the angle between the third straight line segment (28) and the tread centerline (1) is 59°; the distance between the intersection of the third straight line segment (28) and the third arc segment (291) and the shoulder is 68.5% of the distance from the shoulder to the tread centerline (1); The distance between the second straight line segment (26) and the second arc segment (27) is a second distance, and the second distance is 80.1% of the distance from the shoulder to the tread centerline (1); the angle between the fourth straight line segment (29) and the tread centerline (1) is 0°; the angle between the second straight line segment (26) and the tread centerline (1) is 76°, and the distance between the intersection of the second straight line segment (26) and the second arc segment (27) and the shoulder is a third distance, and the third distance is 70.3% of the distance from the shoulder to the tread centerline (1).

8. The solid tire according to claim 5, characterized in that: The preset pattern also includes a plurality of first longitudinal grooves (30), each of which is arranged between two adjacent long transverse grooves (20), a first end of each of which is connected to one of the two long transverse grooves (20), and a second end of each of which is connected to the other of the two long transverse grooves (20).

9. The solid tire according to claim 8, characterized in that: The first longitudinal groove (30) comprises a ninth groove wall (31) and a sixth groove wall (32) which are arranged opposite to each other in the axial direction of the solid tire, the ninth groove wall (31) being arranged close to the tread center line (1) relative to the sixth groove wall (32), the sixth groove wall (32) extending along a fourth preset line segment, the fourth preset line segment comprising a fifth straight line segment (33) and two fifth arc line segments (331), the two ends of the fifth straight line segment (33) being respectively connected to the two fifth arc line segments (331), the two fifth arc line segments (331) being respectively connected to the first preset line segment of one of the long transverse grooves (20) and the second preset line segment of the other long transverse groove (20); wherein the angle between the fifth straight line segment (33) and the tread center line (1) is 10°, and the value range of the angle c between the sixth groove wall (32) and the groove bottom normal line of the first longitudinal groove (30) is 3°≤c≤8°.

10. The solid tire according to claim 5, characterized in that: The preset pattern also includes a plurality of short transverse grooves (40), and the plurality of short transverse grooves (40) and the plurality of elliptical grooves (10) are arranged in one-to-one correspondence, the first end of each short transverse groove (40) is arranged close to the tread centerline (1), and the second end of each short transverse groove (40) extends to the tire shoulder and is connected to the corresponding elliptical groove (10), the short transverse groove (40) has a seventh groove wall (41) and an eighth groove wall (42) arranged opposite to each other along the circumferential direction of the solid tire, the value range of the angle d between the seventh groove wall (41) and the groove bottom normal line of the short transverse groove (40) is 5°≤d≤10°, and the value range of the angle e between the eighth groove wall (42) and the groove bottom normal line of the short transverse groove (40) is 15°≤e≤25°.

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