Strong road holding rake wheel for wet and slippery steep slope pavement

Abstract

The utility model belongs to the technical field of tire skid resistance, and particularly relates to a wet and slippery abrupt slope road surface strong road holding rake wheel which comprises a rim and a tire main body, the tire main body is flexible, and a plurality of rows of mounting holes are formed in the tire main body at intervals in the circumferential direction; the rake wheel further comprises a plurality of rake tooth assemblies, the rake teeth of the rake wheel with the structure can be rapidly detached and replaced locally on the basis that the whole tire is not detached, maintenance is convenient, the use cost is low, meanwhile, rake tooth bodies and bolts are matched to form an arc-shaped grounding surface, the ground gripping effect is good, and damage to the ground is small.

Description

Technical Field

[0001] The utility model belongs to the technical field of tire anti - skid, and particularly relates to a nail - rake wheel with strong grip on wet and steep slopes. Background Technique

[0002] With the rapid development of forestry, orchards, photovoltaic power stations, and facility agriculture in China, the demands for mowing, spraying, transporting, fertilizing, etc. are increasing day by day. Due to the vast territory and inconsistent planting habits in different regions, coupled with the shortage of manual labor, a series of robots that can complete the above - mentioned work have emerged on the market. For example, lawn mowing robots, spraying machines, etc.

[0003] At present, most of the agricultural and forestry machinery and equipment on the market use stamped steel rims and rubber tires with different treads to support the vehicle body, buffer external impacts, and ensure the driving performance of the vehicle. However, on wet and slippery roads where the friction coefficient decreases sharply, and on steep slopes where the tire ground pressure decreases, the traction of the vehicle body will be reduced, and the wheels will slip, get stuck, or even overturn.

[0004] For this reason, for example, the Chinese utility model patent with the application number CN202122854095.1 discloses a tire, a roller, and a lawn mowing robot. The outer surface of the tire is provided with multiple rows of protrusions at intervals. The protrusions in the same row are arranged at intervals along the axial direction of the tire body, and the protrusions in adjacent rows are arranged in a staggered manner. These protrusions can effectively embed into the lawn when the tire walks on the grass, enhancing the grip of the tire.

[0005] Again, for example, the Chinese utility model patent with the application number CN201721886441.1 discloses a rubber - sleeve anti - skid nail applicable to a tire with a counterbore, including an anti - skid nail body, a nail core, and a rubber sleeve. The anti - skid nail body includes a disc at the bottom, and a cylindrical installation body that extends upward from the upper end of the disc and has a diameter smaller than that of the disc. Specifically, when in use, the rubber sleeve is snap - fitted into the counterbore of the tire, so that the anti - skid nail body and the nail core are fixed on the outer shell of the tire. Under the action of the nail core, the nail core will pierce or penetrate into the ice surface when the tire is running, improving the grip of the tire.

[0006] However, the above - mentioned solutions still have at least the following deficiencies: for example, the structure is complex, the installation difficulty is high, the connection reliability is difficult to guarantee, and the service life of the tire is not long, etc.

[0007] Therefore, there is an urgent need for an anti - skid tire that can provide stable grip and has a long service life. Summary of the Utility Model

[0008] The purpose of the utility model is to provide a nail - rake wheel with strong grip on wet and steep slopes to partially alleviate or solve the above problems.

[0009] To solve the above-mentioned technical problems, the present utility model specifically adopts the following technical solutions: A strong grip harrow wheel for a slippery steep slope road surface, comprising a rim and a tire body. The tire body is flexible, and multiple rows of mounting holes are arranged at intervals along the circumferential direction on the tire body; further comprising a plurality of harrow tooth assemblies. The hardness of the harrow tooth assemblies is greater than that of the tire body. The harrow tooth assemblies include harrow tooth bodies and bolt assemblies. Through holes are provided on the harrow tooth bodies. When the bolts of the bolt assemblies sequentially penetrate through the through holes and the mounting holes and are fixed by the nuts of the bolt assemblies, the harrow tooth bodies and the tire body are relatively fixed, and the harrow tooth bodies are located on the outer surface of the tire body; the cross-section of the harrow tooth body is circular or polygonal, and the outer diameter of the harrow tooth body gradually increases from its first end to its second end; the cross-section of the head of the bolt of the bolt assembly is circular or polygonal, and the outer diameter of the head of the bolt gradually increases from its first end to its second end, and the head of the bolt is in smooth transition with the harrow tooth body.

[0010] As an improvement, a spacer sleeve is arranged in the mounting hole.

[0011] As an improvement, the distance between adjacent two rows of the mounting holes is the same, and the mounting holes in the same row are evenly distributed along the circumferential direction of the tire body.

[0012] As an improvement, the mounting holes in different rows are arranged in a staggered manner, so that the mounting holes in different rows are arranged in a spiral.

[0013] As an improvement, the mounting holes are provided with 5 rows, and the number of mounting holes in each row is 10.

[0014] As an improvement, a cavity is arranged inside the harrow tooth body, and at least one opening communicating with the cavity is arranged on the side wall of the harrow tooth body, so that the harrow tooth body forms a semi-hollow structure.

[0015] As an improvement, the tire body is made of wear-resistant cloth-reinforced rubber.

[0016] As an improvement, a tire connection surface is arranged along the circumferential direction of the rim, a hub connection surface is arranged on one side wall of the rim, and the outer diameter of the tire connection surface is the same as the inner diameter of the tire body.

[0017] As an improvement, the harrow tooth body is made of metal material.

[0018] As an improvement, the rim is formed by stamping a steel plate.

[0019] The principle and beneficial effects of the present utility model are as follows:

[0020] This application provides a replaceable harrow tooth assembly and a harrow wheel with a strong grip effect on wet and steep road surfaces, which has a stable strong grip effect. The harrow wheel with the above structure has good anti-slip effect and long service life.

[0021] On the one hand, this application designs a harrow tooth assembly with an arc-shaped structure, which is matched with a flexible tire body, so that the harrow wheel has a good grip effect, and when facing complex terrains, it can ensure that there is always a harrow tooth assembly in contact with the ground, thus achieving a comprehensive anti-slip effect. On the other hand, the harrow tooth body is fixed to the tire body through a bolt assembly, which is not easy to fall off. At the same time, it is also convenient to quickly replace the harrow teeth locally without disassembling the whole tire, with convenient maintenance, low use cost, and improved service life of the harrow wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts do not necessarily draw according to the actual scale. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the harrow wheel according to an exemplary embodiment of the present invention;

[0024] Figure 2 It is a schematic diagram of the deformed harrow wheel under force according to an exemplary embodiment of the present invention;

[0025] Figure 3 It is a schematic diagram of the overall structure of the rim according to an exemplary embodiment of the present invention;

[0026] Figure 4 It is a schematic diagram of the overall structure of the tire body according to an exemplary embodiment of the present invention;

[0027] Figure 5 It is a cross-sectional view of the installation state of the harrow teeth according to an exemplary embodiment of the present invention.

[0028] Reference numerals in the figure: 1, tire body; 101, mounting hole; 2, harrow tooth assembly; 201, harrow tooth body; 202, bolt assembly; 203, spacer sleeve; 204, head of the bolt; 3, rim; 301, hub connection surface; 302, tire connection surface; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] In this document, suffixes such as "module", "component" or "unit" used to represent elements are only for the convenience of describing the present utility model, and have no specific meaning in themselves. Therefore, "module", "component" or "unit" can be used interchangeably.

[0031] In this document, the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", "front", "rear", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0032] In this document, unless otherwise clearly defined and limited, terms such as "installed", "provided with", "connected", etc. shall be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0033] In this document, "and / or" includes any and all combinations of one or more of the listed related items.

[0034] In this document, "a plurality of" means two or more, that is, it includes two, three, four, five, etc.

[0035] The embodiment is basically as Figures 1 - 5 shown:

[0036] See Figure 1, the present utility model provides a strong grip harrow wheel for a wet and slippery steep slope road surface, which mainly includes a rigid rim 3, a flexible tire body 1 and a harrow tooth assembly 2. The harrow tooth assembly 2 is installed on the tire body 1 and is arranged in a spiral line to achieve better grounding performance. The flexible tire body 1 is connected to the rigid rim 3 through the harrow tooth assembly 2. Under normal working conditions, the rigid rim 3 drives the tire body 1 and the harrow tooth assembly 2 installed above it to roll, so as to drive the vehicle body forward; on a wet or slippery steep slope road surface, the harrow tooth assembly 2 can firmly embed into the ground to increase the grip; on an uneven road surface, the tire body 1 can produce flexible deformation to keep the vehicle body chassis stable and improve the safety and stability of the vehicle body.

[0037] Specifically, as Figure 3 , the rim is provided with a tire connection surface 302 along the circumferential direction, and one side wall of the rim is provided with a hub connection surface 301. The outer diameter of the tire connection surface 302 is the same as the inner diameter of the tire body, which mainly plays a role in supporting the tire body and transmitting power.

[0038] In some embodiments, through holes corresponding to the mounting holes are uniformly distributed on the tire connection surface, so that while installing the harrow tooth assembly, the rim and the tire body are fixed.

[0039] In some embodiments, the rim is formed by stamping a steel plate.

[0040] See Figure 4 , the tire body is flexible, and multiple rows of mounting holes 101 are arranged at intervals along the circumferential direction on the tire body.

[0041] In some embodiments, the flexible tire body is composed of a special wear-resistant cloth-reinforced rubber, which can maintain roundness and drive the vehicle body to travel under normal road conditions, and can produce flexible deformation to keep the vehicle body chassis stable when encountering large protrusions on the ground.

[0042] In some embodiments, the distance between adjacent rows of the mounting holes is the same. The mounting holes in the same row are uniformly distributed along the circumferential direction of the tire body, and the mounting holes in different rows are staggered and arranged in a spiral line to ensure uniform grounding performance of the harrow teeth and reduce vibration and damage during walking.

[0043] In some specific embodiments, the mounting holes (threaded holes) are provided in 5 rows, and the number of mounting holes in each row is 10. That is to say, the mounting holes are uniformly distributed in 5 columns along the axial direction of the tire body and in 10 circles along the radial direction.

[0044] With such an arrangement of the mounting holes, no matter which direction the harrow wheel rotates, a certain number of grip harrow teeth can contact the ground, reducing the walking impact.

[0045] In some embodiments, referring to Figure 5 , a spacer sleeve 203 (preferably a rigid spacer sleeve) is arranged in the mounting hole. The design of the spacer sleeve can make the connection between the bolt assembly and the harrow tooth body more firm and reliable, and at the same time reduce the damage to the flexible tire body when the tire rotates.

[0046] Referring to Figure 5 , it further includes a plurality of harrow tooth assemblies. The hardness of the harrow tooth assemblies is greater than that of the tire body. The harrow tooth assemblies include a harrow tooth body 201 and a bolt assembly 202. A through hole is arranged on the harrow tooth body 201. When the bolt of the bolt assembly 202 sequentially passes through the through hole and the mounting hole and is fixed by the nut of the bolt assembly 202, the harrow tooth body 201 and the tire body are relatively fixed, and the harrow tooth body 201 is located on the outer surface of the tire body;

[0047] The cross section of the harrow tooth body 201 is circular or polygonal, and the outer diameter of the harrow tooth body 201 gradually increases from its first end to its second end; the cross section of the head 204 of the bolt of the bolt assembly 202 is circular or polygonal, and the outer diameter of the head 204 of the bolt gradually increases from its first end to its second end. The head 204 of the bolt is smoothly transitioned with the harrow tooth body. That is to say, the head of the bolt assembly 202 is arc-shaped, which can well penetrate the soil while improving the soil-gripping force when entering the soil, weaken the damage to the ground by conventional pointed teeth, and at the same time, for a slippery road surface, the harrow teeth can embed into the ground to form a better soil-gripping force.

[0048] In some embodiments, a cavity is arranged inside the harrow tooth body, and at least one opening communicating with the cavity is arranged on the side wall of the harrow tooth body, so that the harrow tooth body forms a semi-hollow structure. Its hollow design can save materials and simplify the processing technology while not affecting the strength of the harrow tooth body.

[0049] In some embodiments, the harrow tooth body 201 is made of a metal material (preferably a casting alloy) so that the harrow tooth assembly has both impact resistance and certain toughness and wear resistance, and realizes the overall light weight of the harrow teeth while ensuring the strength; the bolt assembly 202 is a high-strength bolt with high wear resistance and a long service life.

[0050] It should be noted that the size of the harrow tooth assembly is related to the clearance between the mounting holes and the number of rows and columns of the harrow teeth. Those skilled in the art can make adaptive adjustments according to the actual situation to ensure that the harrow tooth assembly can smoothly and orderly contact the ground during the rotation of the tire.

[0051] In summary, for the harrow wheel with the above structure, its harrow teeth can be quickly replaced locally without disassembling the whole tire, which is convenient for maintenance and has a low use cost. At the same time, the main body of the harrow teeth and the bolt cooperate to form an arc-shaped grounding surface, which has a good ground gripping effect and causes less damage to the ground.

[0052] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without more limitations, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including that element.

[0053] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the purpose of the present invention and the scope protected by the claims. All of these are within the protection scope of the present invention.

Claims

1. A spiked rake wheel with strong grip on slippery and steep slopes, characterized by: It comprises a rim and a tire body, wherein the tire body is flexible and has a plurality of rows of mounting holes arranged at intervals along the circumferential direction; It also includes a plurality of spike rake tooth assemblies, wherein the hardness of the spike rake tooth assemblies is greater than the hardness of the tire body, and the spike rake tooth assemblies include a spike rake tooth body and a bolt assembly, wherein the spike rake tooth body is provided with a through hole, and when the bolts of the bolt assembly sequentially penetrate the through hole and the mounting hole and are fixed by the nuts of the bolt assembly, the spike rake tooth body and the tire body are relatively fixed, and the spike rake tooth body is located on the outer surface of the tire body; The cross-section of the spike rake tooth body is circular or polygonal, and the outer diameter of the spike rake tooth body gradually increases from the first end to the second end; the cross-section of the head of the bolt of the bolt assembly is circular or polygonal, and the outer diameter of the head of the bolt gradually increases from the first end to the second end, and the head of the bolt smoothly transitions to the spike rake tooth body.

2. The strong gripping spiked rake wheel for slippery steep slope road surface according to claim 1, characterized in that: A spacer sleeve is arranged in the mounting hole.

3. The strong gripping spike rake wheel for slippery steep slope road surface according to claim 1, characterized in that: The distances between two adjacent rows of the mounting holes are the same, and the mounting holes in the same row are evenly distributed along the circumferential direction of the tire body.

4. The strong gripping spike harrow wheel for slippery steep slope road surface according to claim 1, characterized in that: The mounting holes are arranged in 5 rows, and the number of the mounting holes in each row is 10.

5. A spiked rake wheel with strong grip for slippery steep slope road surface according to any one of claims 1 to 4, characterized in that: The mounting holes in different rows are arranged in a staggered manner, so that the mounting holes in different rows are arranged in a spiral line.

6. The strong gripping spiked rake wheel for slippery steep slope road surface according to claim 1, characterized in that: A cavity is arranged inside the spike rake tooth body, and at least one opening communicating with the cavity is arranged on the side wall of the spike rake tooth body, so that the spike rake tooth body forms a semi-hollow structure.

7. The strong gripping spiked rake wheel for slippery steep slope road surface according to claim 1, characterized in that: The tire body is made of wear-resistant cloth-reinforced rubber.

8. The strong gripping spiked rake wheel for slippery steep slope road surface according to claim 1, characterized in that: The rim is provided with a tire connection surface along the circumferential direction, one of the side walls of the rim is provided with a hub connection surface, and the outer diameter of the tire connection surface is the same as the inner diameter of the tire body.

9. A spiked rake wheel with strong grip for slippery steep slopes according to any one of claims 6 to 8, characterized in that: The main body of the spike rake teeth is made of metal material.

10. The strong gripping spiked rake wheel for slippery steep slope road surface according to claim 1, characterized in that: The rim is formed by stamping a steel plate.

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