A nylon wheel used on engineering or agricultural crawler machinery

Abstract

The present invention discloses a nylon wheel for engineering or agricultural crawler machinery, comprising: a load-bearing assembly, the load-bearing assembly being mounted on the rotating shaft of the engineering machinery; the load-bearing assembly comprising a load-bearing wheel body formed and processed by nylon injection molding; the outer end face of the load-bearing wheel body having a first wheel rim protruding outward; a sealing assembly, the sealing assembly being sleeved on the rotating shaft and embedded in the load-bearing assembly; the sealing assembly comprising a seal and an end cover embedded in the load-bearing wheel body, the seal and the end cover being arranged relative to each other, and the seal being a double-layer sealing structure of a skeleton oil seal. The nylon wheel for engineering machinery proposed by the present invention is made of nylon material for the load-bearing wheel body, which has better performance than existing load-bearing wheel bodies made of rubber and metal. The use of a single material also makes it more efficient, and the overall molding also ensures sealing.

Description

Technical Field

[0001] The present invention relates to the field of traveling mechanisms on engineering or agricultural crawler machines, and in particular to a nylon wheel used on engineering or agricultural crawler machines. Background Art

[0002] Construction machinery is an important component of the equipment industry. Generally speaking, it refers to the mechanical equipment required for earthwork construction, road construction and maintenance, mobile lifting and loading and unloading operations, and comprehensive mechanized construction projects required for various construction projects. In engineering or agricultural crawler machinery, a crawler chassis is generally required to carry loads and drive the movement. The crawler walking mechanism uses a load-bearing wheel body, but the load-bearing wheel body on existing engineering machinery is made of metal or a mixture of rubber and metal, which is relatively bulky and has poor stability, resulting in poor sealing of the molded load-bearing wheel body, and the production cost of the load-bearing wheel body is relatively high, and it is not flexible and agile enough; the seals in the wheels on existing engineering machinery directly use the three-layer structure seals commonly used on the market, which can also achieve a sealing effect, but the outer layer of the common three-layer sealing structure is redundant, which slows down the production efficiency of the seals and increases the cost of the seals; the end face of the load-bearing wheel body on the existing engineering machinery is an inwardly concave groove ring, which is easy to accumulate silt inside; there is no dust shield structure on the annular plane of the end cover and the end cover groove in the wheel of the existing engineering or agricultural crawler machinery, which allows debris and dust to enter the sealing assembly and bearing, thereby affecting its use effect and reducing its service life.

[0003] The present invention is an improvement made to solve the above problems. Summary of the Invention

[0004] The object of the present invention is to provide a nylon wheel for use on engineering or agricultural crawler machinery, thereby solving the above-mentioned drawbacks.

[0005] The technical solution adopted by the present invention to solve its technical problems is:

[0006] A nylon wheel for engineering or agricultural crawler machinery, comprising:

[0007] A load-bearing assembly is mounted on a rotating shaft of an engineering or agricultural crawler-type machine; the load-bearing assembly includes a load-bearing wheel body formed by nylon injection molding and processing; the outer end surface of the load-bearing wheel body has a first wheel rim protruding outward;

[0008] A sealing assembly is sleeved on the rotating shaft and embedded in the load-bearing assembly; the sealing assembly includes a seal embedded in the load-bearing wheel body and an end cover, the seal and the end cover are arranged relative to each other, and the seal is a TCN high-pressure skeleton oil seal double-layer sealing structure.

[0009] Furthermore, the outer end surface of the load-bearing wheel body has a second rim and a third rim protruding outward, and the first rim is located between the second rim and the third rim; the second rim is provided with an installation groove for installing a bearing and a sealing assembly.

[0010] Furthermore, the mounting groove is through a sealing groove, an end cover groove and two bearing mounting grooves, the two bearing mounting grooves are respectively located on the inner sides of the sealing groove and the end cover groove, the sealing member is embedded in the sealing groove, the end cover is embedded in the end cover groove, and the bearing mounting groove is embedded with a bearing; the diameters of the sealing groove and the end cover groove are respectively larger than the diameter of the bearing mounting groove.

[0011] Furthermore, there is a limiting protrusion between the two bearing mounting grooves for limiting the bearing.

[0012] Furthermore, an annular groove is provided on the outer annular surface of the end cover, and a sealing ring is embedded in the annular groove.

[0013] Furthermore, the outer sides of the sealing groove and the end cover groove are respectively provided with limiting grooves, and the limiting grooves are embedded with retaining springs.

[0014] Furthermore, the inner diameter wall of the sealing element is provided with two inwardly protruding sealing protrusions.

[0015] Furthermore, the nylon wheel is mainly installed on the crawler chassis frame and used in conjunction with the rubber crawler track. It is a component of the crawler walking chassis and plays the role of bearing weight and walking.

[0016] The advantages of the present invention are:

[0017] The present invention proposes a nylon wheel for engineering or agricultural crawler machinery. The load-bearing wheel body is made of nylon material, which has better performance than existing load-bearing wheel bodies made of rubber or metal. The use of a single material also increases processing efficiency, and the overall molding also ensures sealing performance. The seal in the existing wheel adopts a universal three-layer sealing structure, but the outer layer of the three-layer sealing structure is redundant. The seal on the nylon wheel adopts a double-layer sealing structure. While ensuring its sealing effect, the structure of the seal on the nylon wheel is simpler and its manufacturing cost is reduced. The double-layer seal has better force resistance. The end face of the existing wheel has an inwardly concave groove ring, which is prone to silt accumulation. The nylon wheel is provided with a first wheel rim to prevent a large amount of silt from accumulating on the end face of the nylon wheel and make the end face of the nylon wheel easier to clean. The sealing ring on the end cover of the nylon wheel provides an additional protection on the annular plane between the end cover and the end cover groove, preventing debris from entering the installation groove through the gap between the end cover and the end cover groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a cross-sectional view of a nylon wheel for use on engineering or agricultural crawler machinery proposed by the present invention;

[0019] Figure 2 is a cross-sectional view of the load-bearing wheel body on the nylon wheel;

[0020] Figure 3 It is a structural diagram of the end cover on the nylon wheel;

[0021] Figure 4 It is a structural diagram of the seal on the nylon wheel;

[0022] Figure 5 is a cross-sectional view of the seal on the nylon wheel;

[0023] Figure 6 It is a structural diagram of the load-bearing wheel body on the nylon wheel;

[0024] Figure 7 1 is a schematic diagram of the structure of the nylon wheel;

[0025] Figure 8 This is a working diagram of the nylon wheel when used on a track. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to diagrams and specific embodiments.

[0027] like Figures 1 to 7 As shown, the present invention proposes a nylon wheel for engineering or agricultural crawler machinery, comprising:

[0028] A load-bearing assembly is mounted on a rotating shaft of an engineering or agricultural crawler-type machine; the load-bearing assembly includes a load-bearing wheel body formed by nylon injection molding and processing; the outer end surface of the load-bearing wheel body has a first wheel rim protruding outward;

[0029] The sealing assembly is sleeved on the rotating shaft and embedded in the load-bearing assembly; the sealing assembly includes a seal and an end cover embedded in the load-bearing wheel body, the seal and the end cover are arranged relative to each other, and the seal is a TCN high-pressure skeleton oil seal double-layer sealing structure (TCN type is a double-layer outer iron shell oil seal).

[0030] like Figure 8As shown: This load-bearing component is mainly installed on the rotating shaft of the chassis frame of engineering or agricultural machinery crawler machinery, and matches with the rubber track to form a complete crawler chassis walking structure. It is mainly used on the crawler chassis walking structure of skid loaders such as ASV RC50, CATERPILLAR CAT247 and CAT257B, as well as other snowmobiles or agricultural machinery.

[0031] By adopting the above technical solution, the load-bearing wheel body is made of nylon material, which has better performance than the existing load-bearing wheel bodies made of rubber and metal. The use of a single material also makes processing faster, and the overall molding also ensures sealing.

[0032] The seal inside the existing wheel adopts a universal three-layer sealing structure, but the outer layer of the three-layer sealing structure is redundant. The seal on the nylon wheel adopts a double-layer sealing structure. While ensuring its sealing effect, the structure of the seal on the nylon wheel is simpler and its manufacturing cost is reduced. The double-layer seal has better force resistance.

[0033] The end face of the existing wheel is an inwardly concave groove ring, in which mud easily accumulates. The provision of the first wheel rim prevents a large amount of mud from accumulating on the end face of the nylon wheel and makes the end face of the nylon wheel easy to clean.

[0034] The present invention is further configured as follows: the outer end face of the load-bearing wheel body 1 has a second rim and a third rim protruding outward, the first rim 11 is located between the second rim and the third rim; and the second rim is provided with an installation groove for installing bearings and sealing components.

[0035] By adopting the above technical solution, the second wheel rim is set, so that the length of the installation groove is deepened to adapt to the sealing assembly, so that the protruding part of the sealing assembly does not affect the overall beauty of the nylon wheel; by setting the third wheel rim, the friction area between the nylon wheel and the ground is increased.

[0036] The present invention is further configured as follows: the mounting groove passes through a sealing groove 12, an end cover groove 13 and two bearing mounting grooves 14; the two bearing mounting grooves are respectively located on the inner sides of the sealing groove 12 and the end cover groove 13, inside the bearing grooves on both sides of the center of the load-bearing wheel body; the seal 2 is embedded in the sealing groove 12, the end cover 3 is embedded in the end cover groove 13, and the bearing mounting groove 14 is embedded with a bearing 4; the diameters of the sealing groove 12 and the end cover groove 13 are respectively larger than the diameter of the bearing mounting groove 14.

[0037] By adopting the above technical solution, the diameters of the sealing groove and the end cover groove are respectively larger than the diameter of the bearing mounting groove, so that the inner ends of the end cover and the seal have limiting step surfaces.

[0038] The present invention is further configured as follows: a limiting protrusion 15 for limiting the position of the bearing 4 is provided between the two bearing mounting grooves 14 .

[0039] By adopting the above technical solution, the position of the bearing in the bearing installation groove is limited by the setting of the limiting protrusion, and the outer side of the bearing is limited by the sealing member and the end cover respectively.

[0040] The present invention is further configured as follows: an annular groove 31 is formed on the outer annular surface of the end cover 3 , and a sealing ring 5 is embedded in the annular groove 31 .

[0041] By adopting the above technical solution and setting the sealing ring, a protection is added to the annular plane of the end cover and the end cover groove, so that debris will not enter the installation groove through the gap between the end cover and the end cover groove.

[0042] The present invention is further configured as follows: a limiting groove 16 is respectively provided on the outer sides of the sealing groove 12 and the end cover groove 13 , and a retaining spring 6 is embedded in the limiting groove 16 .

[0043] By adopting the above technical solution and setting the retaining spring, the outer sides of the seal and the end cover are limited, so that the seal and the end cover will not fall out easily after being installed in the seal groove and the end cover groove respectively.

[0044] The present invention is further configured as follows: the inner diameter wall of the sealing member 2 is provided with two inwardly protruding sealing protrusions 21 .

[0045] By adopting the above technical solution and forming two sealing protrusions, the seal becomes a double-layer seal, so that both sides of the seal can achieve a sealing effect on the rotating shaft.

[0046] The present invention is further configured as follows: the nylon wheel is mainly installed on the crawler chassis frame ( Figure 8 ) and is used in conjunction with rubber tracks. It is a component of the walking chassis on the crawler type and plays the role of bearing weight and walking.

[0047] Working principle of the present invention:

[0048] This aspect is used for installation on the walking mechanism of engineering machinery, by passing the rotating shaft through the seal and the bearing in sequence, and then limiting it through the end cover.

[0049] The above embodiments are only for illustrating the technical concept and features of the present invention. Its purpose is to enable technicians in this field to understand the content of the present invention and implement it. It cannot be used to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A nylon wheel for engineering or agricultural crawler machinery, characterized in that: include: A load-bearing assembly is mounted on a rotating shaft of an engineering or agricultural crawler-type machine; the load-bearing assembly comprises a load-bearing wheel body (1) formed and processed by nylon injection molding; the outer end surface of the load-bearing wheel body (1) has a first wheel rim (11) protruding outwards; A sealing assembly is sleeved on the rotating shaft and embedded in the load-bearing assembly; the sealing assembly comprises a sealing member (2) embedded in the load-bearing wheel body (1) and an end cover (3); the sealing member (2) and the end cover (3) are arranged relative to each other, and the sealing member (2) is a TCN high-pressure skeleton oil seal double-layer sealing structure; The outer end surface of the load-bearing wheel body (1) has a second wheel rim and a third wheel rim protruding outward, the first wheel rim (11) is located between the second wheel rim and the third wheel rim; the second wheel rim is provided with a mounting groove for mounting a bearing and a sealing assembly; The mounting groove is formed by a sealing groove (12), an end cover groove (13) and two bearing mounting grooves (14); the two bearing mounting grooves are respectively located on the inner sides of the sealing groove (12) and the end cover groove (13); the sealing member (2) is embedded in the sealing groove (12); the end cover (3) is embedded in the end cover groove (13); and the bearing mounting groove (14) is embedded with a bearing (4); the diameters of the sealing groove (12) and the end cover groove (13) are respectively larger than the diameter of the bearing mounting groove (14); A limiting protrusion (15) for limiting the bearing (4) is provided between the two bearing mounting grooves (14); an annular groove (31) is provided on the outer ring surface of the end cover (3), and a sealing ring (5) is embedded in the annular groove (31); limiting grooves (16) are respectively provided on the outer sides of the sealing groove (12) and the end cover groove (13), and a retaining ring (6) is embedded in the limiting groove (16).

2. The nylon wheel for engineering or agricultural crawler machinery according to claim 1, characterized in that: The inner diameter wall of the sealing element (2) is provided with two inwardly protruding sealing protrusions (21).

3. The nylon wheel for engineering or agricultural crawler machinery according to claim 1, characterized in that: The nylon wheel is installed on the crawler chassis frame and used in conjunction with the rubber crawler track. It is a component of the crawler walking chassis and plays the role of load bearing and walking.

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