A tire structure for a tire-shovel capable of preventing stone chipping

Abstract

The utility model relates to tire structure technical field and disclose a kind of tire structure for tire excavator with stone breaking prevention, comprising: carcass, the inner side of the carcass is provided with annular boss;The crown pattern groove bottom of the carcass is provided with arc, the arc extends from crown to the outside direction of inboard side;The arc extends to the end of annular boss and is bent down to form reverse arc, and the reverse arc is connected with the upper side of carcass.The utility model plating tungsten carbide cobalt alloy ring-shaped boss wear resistance, pattern groove bottom arc and reverse arc guide off stone, embedded memory alloy spring piece stable reverse arc, prolong life and prevent jamming scratch.

Description

Technical Field

[0001] This utility model relates to the field of tire structure technology, specifically a tire structure for a tire-type excavator that can prevent the excavation of gravel. Background Technology

[0002] The tire structure for tire-mounted excavators belongs to the field of engineering machinery tire technology. It is mainly adapted to tire-mounted excavators and is used in mining, infrastructure and other crushed stone operation scenarios. It is necessary to ensure the stable use of the tires when the excavator is driving and working in crushed stone environment. Its key structures such as the annular boss and the tread pattern directly affect the tire's performance and life.

[0003] The existing tire structure of this type has obvious shortcomings. On the one hand, the surface of the annular boss is not specially treated for wear resistance, and it is easily worn under frequent contact and friction with gravel, resulting in a significant reduction in the service life of the annular boss. On the other hand, the bottom structure of the tread groove lacks a reasonable guiding design, which cannot guide the gravel to detach smoothly, making it easy for the gravel to get stuck in the tread groove. It may also scratch the tire body during tire operation, affecting the normal use of the tire. Therefore, a tire structure for excavators that can prevent gravel from falling is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a tire structure for tire-mounted excavators that can prevent rockfalls, thereby solving the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tire structure for a tire-type excavator that can prevent rockfalls, comprising:

[0006] The tire carcass has an inner tire sidewall and an outer tire sidewall for twin tires to be mounted together, which form an asymmetrical tire sidewall structure. The inner tire sidewall of the tire carcass is provided with an annular boss, which can support the inner tire sidewall of the tire carcass and provide a structural basis for resisting gravel. The coating further enhances the wear resistance.

[0007] The bottom of the tread grooves of the tire carcass is provided with an arc, which extends 20-30mm from the tread towards the outer side of the inner tire side to form the annular boss; after the arc extends to the end of the annular boss, it bends downward to form a reverse arc, which connects to the upper tire side of the tire carcass. This can guide the gravel from the tread to the outer side of the tire side and smoothly detach it from the tire carcass, avoiding the accumulation of gravel in the tread grooves or scratching damage to the tire carcass.

[0008] The anti-arc and the tire sidewall connection are embedded with a shape memory alloy spring sheet, which is made of nickel-titanium alloy (Ni55Ti45) with a thickness of 0.3-0.5mm. The radius of curvature of the shape memory alloy spring sheet is consistent with that of the anti-arc, which can stably maintain the shape of the anti-arc, prevent the anti-arc from deforming due to external impact, ensure that the gravel guide path does not change, and ensure the reliability of gravel guidance.

[0009] The annular boss is coated with a tungsten carbide cobalt alloy coating, which can enhance the hardness and wear resistance of the annular boss, reduce the wear of the annular boss caused by gravel impact and friction, extend the service life of the annular boss, and thus ensure the tire's anti-gravel performance.

[0010] Preferably, the annular boss is arranged in a continuous closed shape along the circumference of the tire body, and the thickness of the annular boss is consistent with the base thickness of the inner tire sidewall.

[0011] Preferably, a circumferential groove is provided on the inner tire sidewall directly below the annular boss, the vertical distance between the circumferential groove and the annular boss is 10-15mm, and the circumferential groove extends continuously along the circumference of the tire body.

[0012] Preferably, the outer sidewall of the tire body has a structure without anti-friction lines. The outer surface of the outer sidewall of the tire body extends from the tire shoulder position through a large tangent to the horizontal axis position of the tire sidewall, and then connects with the lower sidewall arc surface of the tire body through a transition arc surface.

[0013] Preferably, the lower end of the reverse arc is smoothly connected to the outer surface of the upper tire side, and the center of curvature of the reverse arc and the center of curvature of the upper tire side arc are located on the same side of the tire body.

[0014] Preferably, the cross-section of the circumferential groove is arc-shaped, the groove depth is 5-8mm, the groove width is 8-12mm, and the inner wall of the circumferential groove transitions to the outer surface of the inner tire sidewall with a rounded arc.

[0015] Compared with the prior art, this utility model provides a tire structure for a tire-type excavator that can prevent rockfalls, and has the following beneficial effects:

[0016] This invention improves the annular boss's resistance to gravel wear by coating its surface with a tungsten carbide-cobalt alloy layer, leveraging the layer's high hardness and wear resistance. This extends the annular boss's service life and solves the problem of gravel wear. The invention also utilizes the guide effect of the arc at the bottom of the tread groove extending inwards and outwards to the end of the annular boss, then bending to form a reverse arc connecting to the tire sidewall. This guide effect helps gravel detach from the tread groove towards the outside of the sidewall, preventing gravel from getting stuck in the tread groove or scratching the tire body. This solves the problems of gravel jamming and scratching. Finally, a shape memory alloy spring with the same radius of curvature as the reverse arc is embedded at the connection between the reverse arc and the sidewall. The shape stability of the shape memory alloy ensures the stable maintenance of the reverse arc's shape, maintaining the gravel guide path and solving the problem of the reverse arc failing to effectively guide gravel after deformation. Attached Figure Description

[0017] Figure 1This is a cross-sectional view of the tire body structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the twin tires mounted together according to this utility model;

[0019] Figure 3 This is a diagram illustrating the common scenario where gravel gets stuck when two tires are mounted side-by-side.

[0020] Figure 4 This is a schematic diagram of the dual-tire parallel installation for intercepting gravel according to this utility model.

[0021] In the diagram: 1. Tire body; 2. Annular boss; 3. Curve; 4. Reverse curve; 5. Circumferential groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides a technical solution: a tire structure for a tire-type excavator that can prevent rockfall. Please refer to [link / reference]. Figure 1 , Figure 2 and Figure 4 ,include:

[0024] The tire body 1 has an inner tire side and an outer tire side for twin tires to be mounted together, which form an asymmetrical tire side structure. The inner tire side of the tire body 1 is provided with an annular boss 2.

[0025] The bottom of the tread groove of the tire body 1 is provided with an arc 3. The arc 3 extends 20-30mm from the tread towards the outer side of the inner side of the tire to form an annular boss 2. The arc 3 extends to the end of the annular boss 2 and then bends downward to form a reverse arc 4. The reverse arc 4 is connected to the upper side of the tire body 1.

[0026] A shape memory alloy spring sheet is embedded at the connection between the reverse arc 4 and the tire sidewall of the tire body 1. It is made of nickel-titanium alloy (Ni55Ti45) with a thickness of 0.3-0.5mm. The radius of curvature of the shape memory alloy spring sheet is consistent with that of the reverse arc.

[0027] The surface of the annular boss 2 is coated with a tungsten carbide cobalt alloy coating.

[0028] Please see Figure 1 , Figure 2 and Figure 4 The annular boss 2 is arranged in a continuous closed shape along the circumference of the tire body 1, and the thickness of the annular boss 2 is consistent with the base thickness of the inner tire sidewall.

[0029] Please see Figure 1 , Figure 2 and Figure 4 A circumferential groove 5 is provided on the inner sidewall of the tire, directly below the annular boss 2. The vertical distance between the circumferential groove 5 and the annular boss 2 is 10-15mm. The circumferential groove 5 extends continuously along the circumference of the tire body 1.

[0030] Please see Figure 1 , Figure 2 and Figure 4 The outer side of the tire body 1 has no anti-friction line structure. The outer surface of the outer side of the tire body 1 extends from the tire shoulder position through a large tangent to the horizontal axis of the tire side of the tire body 1, and then connects with the lower side arc surface of the tire body 1 through a transition arc surface.

[0031] Please see Figure 1 , Figure 2 and Figure 4 The lower end of the reverse arc 4 is smoothly connected to the outer surface of the upper tire side, and the curvature center of the reverse arc 4 and the curvature center of the upper tire side arc are located on the same side of the tire body 1.

[0032] Please see Figure 1 , Figure 2 and Figure 4 The cross-section of the circumferential groove 5 is arc-shaped. The groove depth of the circumferential groove 5 is 5-8mm, and the groove width is 8-12mm. The inner wall of the circumferential groove 5 and the outer surface of the inner tire side are connected by a rounded transition.

[0033] This design, based on tire carcass 1, features asymmetrical inner and outer sidewalls adapted for dual tire mounting. The core structural design achieves both stone chip protection and stable driving. The inner sidewall of tire carcass 1 has a circumferentially continuous closed annular boss 2, with a thickness consistent with the base thickness of the inner sidewall, enhancing its resistance to stone chip impacts. The arc 3 at the bottom of the tread grooves extends 20-30mm from the tread towards the outer sidewall of the inner sidewall, forming the annular boss 2. The arc 3 extends to the end of the annular boss 2 and then bends downwards into a reverse arc 4. The reverse arc 4 smoothly transitions to the upper sidewall of tire carcass 1, with their curvature centers located on the same side of tire carcass 1. It can optimize the force transmission path and reduce stress concentration; directly below the annular boss 2 on the inner sidewall, there is a circumferentially continuously extending circumferential groove 5, with a vertical distance of 10-15mm between the two; the cross-section of the circumferential groove 5 is arc-shaped, with a groove depth of 5-8mm and a groove width of 8-12mm. Its inner wall transitions with the outer surface of the inner sidewall in an arc, which can buffer driving vibration and at the same time accommodate a small amount of gravel that enters, avoiding scratches on the sidewall; the outer sidewall has a structure without anti-friction lines. Its outer surface extends from the tire shoulder through a large tangent to the horizontal axis of the sidewall, and then connects with the lower sidewall arc surface through a transition arc surface, ensuring driving stability. The overall structure takes into account both gravel protection and tire performance.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tire structure for a tire-mounted excavator that can prevent rockfall, characterized in that, include: The tire body (1) has an annular boss (2) on the inner side of the tire body (1); The bottom of the tread groove of the tire body (1) is provided with an arc (3), which extends from the tread to the outer side of the inner side of the tire; the arc (3) extends to the end of the annular boss (2) and then bends downward to form a reverse arc (4), which is connected to the upper side of the tire body (1). The reverse arc (4) is connected to the tire side of the tire body (1) by a memory alloy spring sheet, and the radius of curvature of the memory alloy spring sheet is consistent with that of the reverse arc. The surface of the annular boss (2) is coated with a tungsten carbide cobalt alloy coating.

2. The tire structure for a tire-mounted excavator with rockfall protection according to claim 1, characterized in that: The annular boss (2) is arranged in a continuous closed shape along the circumference of the tire body (1), and the thickness of the annular boss (2) is consistent with the base thickness of the inner tire side.

3. The tire structure for a tire-mounted excavator with rockfall protection according to claim 1, characterized in that: A circumferential groove (5) is provided on the inner side of the tire, directly below the annular boss (2), and the circumferential groove (5) extends continuously along the circumference of the tire body (1).

4. The tire structure for a tire-mounted excavator with rockfall protection according to claim 1, characterized in that: The outer side of the tire body (1) has no anti-friction line structure, and the outer surface of the outer side of the tire body (1) extends from the tire shoulder position through a tangent to the horizontal axis position of the tire side of the tire body (1).

5. The tire structure for a tire-type excavator with rockfall protection according to claim 1, characterized in that: The lower end of the reverse arc (4) is connected to the outer surface of the upper tire side of the tire body (1), and the curvature center of the reverse arc (4) and the curvature center of the upper tire side arc are located on the same side of the tire body (1).

6. The tire structure for a tire-type excavator with rockfall protection according to claim 3, characterized in that: The cross-section of the circumferential groove (5) is arc-shaped, and the inner wall of the circumferential groove (5) and the outer surface of the inner tire side are connected by a circular arc.

Images