Crawler member with rotating sleeve box

Abstract

The present invention relates to a track component (1), comprising: a pin (3); a rotating sleeve (4) fitted onto the pin (3); a first inner link (5) and a second inner link (6) associated with and rotatable relative to the pin (3); a first outer link (7) and a second outer link (8) associated with and integral with the pin (3); wherein a first outer washer (13) and a second outer washer (14) are respectively provided between each of the first outer link (7) and the second outer link (8) and the corresponding link of the first inner link (5) and the second inner link (6); and wherein a first inner washer (15) and a second inner washer (16) are respectively provided between each of the first inner link (5) and the second inner link (6) and the corresponding rotating sleeve (4); wherein the first inner washer (15) The first inner gasket (15) and the second inner gasket (16) each include two seat rings (17, 18), each seat ring (17, 18) having a contact plane (19, 20), the contact planes (19, 20) being arranged opposite each other, in contact with each other and sealing; each seat ring (17, 18) includes at least one inclined annular surface (21, 22), the at least one inclined annular surface forming an acute angle (A, B) with respect to the contact plane (19, 20); each inner gasket (15, 16) also includes two elastic members (23, 24), the first elastic member (23) abutting against the corresponding first inner link (5) and second inner link (6), the second elastic member (24) abutting against the rotating sleeve (4), the elastic members applying a thrust to the two seat rings (17, 18) to press the contact planes (19, 20) between the two seat rings, thereby producing a sealing effect.

Description

Technical Field

[0001] This invention relates to a track component having a rotating sleeve box.

[0002] In particular, the present invention generally relates to components of tracked systems used with tracked walking mechanisms for various types of earthmoving machinery, such as tractors, bulldozers, excavators, graders, mining machinery, and other construction and agricultural machinery. More specifically, this application relates to joints, for example, used in track joint assemblies that can engage pin assemblies for connecting the shoes of adjacent tracks. Background Technology

[0003] Machines used in industries such as mining, construction, and agriculture can be supported by an undercarriage assembly that may have one or more continuous tracks, allowing the machine to move on the ground even in conditions with poor ground support. The continuous track may include multiple links rotatably connected or linked together by means of pins and bushings, and the links are arranged in a continuous loop or belt resembling a closed chain. The connecting elements of the continuous track may also include track boots for engagement with the ground. The continuous track may be arranged around multiple rotating components such as wheels, tensioners, and rollers, which are arranged along the underside of the machine within the undercarriage assembly. The continuous track can translate relative to the machine about the rotating components via a drive gear operably coupled to an engine. Connecting elements articulated between the individual links of the track can form pin assemblies that allow the continuous track to articulate, for example, bend or fold as it circulates around the multiple rotating components, thereby engaging the track boots with the ground.

[0004] Compared to other forms of propulsion such as tires or wheels, continuous tracks have the advantage that they can support and better distribute the weight of the machine because they provide a larger ground contact surface and therefore improved traction.

[0005] Therefore, continuous tracks are better able to traverse soft or loose ground or other materials without getting stuck or spinning on site. Furthermore, improved traction enhances the machine's ability to overcome steep inclines along working surfaces. Additionally, continuous tracks are generally more durable than tires, as the individual track boots and track links are typically made of steel.

[0006] However, in order to facilitate the hinged connection of track links so that the continuous track translates around the rotating element and drive gear, the individual track links can be connected by a track joint assembly with a rotating sleeve.

[0007] Track joint assemblies may include a combination of pins, bearings, sleeves, and washers to facilitate rotation of the coupled track joints while resisting wear.

[0008] Publication No. US 2015 / 0061373 A1 describes a track joint assembly for a tillage machine that incorporates multiple bearings and washers.

[0009] US Publication No. 2020 / 122792 A1 describes a track joint assembly having: a first link of the track including a first through-hole; a second link of the track including a second through-hole and a countersunk hole; a pin extending through the first and second through-holes; a first sleeve surrounding the pin inside the second through-hole; a second sleeve surrounding the first sleeve near the enlarged hole; and a washer disposed in the hole, the washer including a sealing body surrounding the first sleeve. The sleeve assembly includes: an inner sleeve having an outer diameter surface; an outer sleeve having a through-hole extending from a first end of the outer sleeve to a second end of the outer sleeve and defining an inner diameter surface; a channel disposed between the outer diameter surface and the inner diameter surface; and a closing ring washer having a non-uniform cross-sectional profile positioned on the outer diameter surface and abutting against the first end of the outer sleeve to seal the channel. This solution describes a track system incorporating a washer configured to operate in the axial direction and retain lubricant between rotating components while blocking dirt and debris. These washers are constructed with irregular, non-uniform, or varying geometries such that when the washer deforms axially, it undergoes irregular movement to seal between different adjacent surfaces without excessively biasing the washer or being too rigid to allow deformation that promotes a seal. The washer maintains a seal between adjacent components and is therefore useful for sealing to maintain internal lubrication and prevent external foreign matter; in particular, irregularly shaped washers are used for sealing between coaxial sleeves in rotating sleeve links, where the outer sleeve is subjected to axial compression against a countersunk hole in the link connector. This irregularly shaped washer improves sealing performance compared to conventional O-ring washers with regular or uniform cross-sectional profiles—conventional O-ring washers are ineffective at sealing lubricant and the chassis separately.

[0010] Other similar designs are known from Publications Nos. US6206491, US8991944, US2016176454, US9623920B2, US5685548, US2004012260, US5069509, US9604681, US9505453, and US4582366; in all these designs, the sealing of the joint between the rotating sleeve and the chain link occurs in the axial or substantially axial direction, thereby subjecting the gasket to a strong axial bias, which rapidly degrades the gasket's performance, certainly much faster than the rest of the outer gaskets.

[0011] Tests conducted have shown that the average lifespan of washers between links or associated bushings is longer than that of washers in contact with rotating bushings.

[0012] In fact, when the drive gear engages with the rotating sleeve, the drive gear squeezes and pushes all the dirt and debris between the rotating sleeve and the innermost link facing the rotating sleeve. Summary of the Invention

[0013] The object of the present invention is to provide a track component with a rotating sleeve, which enables both the outer and inner washers to have similar average service life.

[0014] Therefore, the present invention aims to address the urgent need to improve the internal seal near the rotating sleeve.

[0015] Furthermore, the present invention aims to prevent contaminants from passing between the rotating sleeve and the inner link in an improved manner suitable for maintaining the service life of the inner gasket.

[0016] Therefore, the object of the present invention is to overcome the shortcomings of the prior art and to allow the above-mentioned needs to be met.

[0017] This and other objectives are achieved by the track component according to claim 1.

[0018] Some advantageous embodiments are the subject of the dependent claims.

[0019] The following advantages can be obtained through the general embodiments and variations described above and further below.

[0020] For example, the proposed solution, and the improved sealing system obtained through the proposed solution, can retain the lubricant inside the joint for a longer period of time.

[0021] Furthermore, to give another example, the proposed solution can provide greater protection against the intrusion of external substances.

[0022] Furthermore, to give another example, the proposed solution can achieve a balance between improving the lifespan of chain components (e.g., reducing it due to wear).

[0023] Furthermore, to give another example, the proposed solution achieves a chain of overall cost reduction compared to existing solutions.

[0024] Furthermore, to give another example, the proposed solution enables increasingly easier maintenance, even on-site maintenance, thereby allowing for simple joint replacement. Attached Figure Description

[0025] Further features and advantages of the invention will become apparent from the following description of preferred embodiments of the invention, given by way of non-limiting example, with reference to the accompanying drawings, in which: - Figure 1 An isometric view of the track components is shown; - Figure 2 The view is shown transversely to the axis of rotation of the pin, or in a radial direction transversely to the side of the continuous track on a flat section of the continuous track. Figure 1 Track components in the middle; - Figure 3 The view is shown transversely to the axis of rotation of the pin, or in a radial direction longitudinally to the side of the continuous track on a flat section of the continuous track. Figure 1 Track components in the middle; - Figure 4 This illustrates a plane section taken from the axis of rotation passing through the pin and transverse to the longitudinal direction of the continuous track on a flat path segment of the continuous track. Figure 1 Track components in the middle; - Figure 5 Only shown Figure 4 A cross-section of the track components in the middle; - Figure 6 yes Figure 5 Enlarged image; - Figure 7 and Figure 8 Two embodiments of the radial washer between the rotating sleeve and the inner link are shown; - Figure 9 An enlarged view of the inner washer is shown; - Figure 10 A tractor with a continuous track consisting of multiple track components is shown. Detailed Implementation

[0026] The invention will now be described in detail with reference to the accompanying drawings to enable those skilled in the art to practice and use it. Various modifications to the described embodiments will be apparent to those skilled in the art without departing from the scope of the invention as defined in the appended claims, and the general principles described can be applied to other embodiments and applications. Therefore, the invention should not be considered limited to the described and illustrated embodiments, but should be given the broadest possible scope of protection according to the described and claimed features.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly used by one of ordinary skill in the art to which this invention pertains. In case of conflict, this specification—including the definitions provided—shall prevail. Furthermore, examples are provided for illustrative purposes only and should not be considered limiting.

[0028] To facilitate understanding of the embodiments described herein, reference will be made to specific embodiments, and specific language will be used to describe these specific embodiments. The terminology used herein is for describing particular embodiments only and is not intended to limit the scope of the invention.

[0029] To meet specific, occasional needs, those skilled in the art can make various changes and modifications to the following embodiments without departing from the scope of the appended claims, and can replace elements with other functionally equivalent elements.

[0030] According to a general embodiment, the track component 1 of the track 2 for a tracked vehicle 54 includes a pin 3 and a rotating sleeve 4, the rotating sleeve 4 being fitted onto the pin 3 and being rotatable relative to the pin 3.

[0031] Furthermore, the track component 1 includes a first inner link 5 and a second inner link 6, which are directly or indirectly associated with the pin 3, for example, through corresponding inner sleeves 9 and 10, and the first inner link 5 and the second inner link 6 are rotatable relative to the pin 3 and are arranged on opposite sides of the rotating sleeve 4.

[0032] Furthermore, the track component 1 includes a first outer link 7 and a second outer link 8, which are directly or indirectly associated with the pin 3, for example, through corresponding outer sleeves 11, 12, and the first outer link 7 and the second outer link 8 are integral with the pin 3 so that the first outer link 7 and the second outer link 8 can rotate together with the pin 3.

[0033] The first inner link 5 and the second inner link 6 are each arranged between one of the first outer link 7 and the second outer link 8 and the rotating sleeve 4.

[0034] A first outer washer 13 and a second outer washer 14 are respectively provided between each of the first outer link 7 and the second outer link 8 or the associated outer sleeve 11, 12 and the facing link or corresponding inner sleeve 9, 10 of the first inner link 5 and the second inner link 6.

[0035] A first inner washer 15 and a second inner washer 16 are respectively provided between each of the first inner link 5 and the second inner link 6 or the associated inner sleeve 9, 10 and the facing rotating sleeve 4.

[0036] Advantageously, the first inner gasket 15 and the second inner gasket 16 each include two seat rings 17 and 18, each seat ring 17 and 18 having contact surfaces 19 and 20, which are arranged to face each other, contact each other, and seal.

[0037] Each of the seat rings 17 and 18 includes at least one inclined annular surface 21 and 22, which forms acute angles A and B with respect to the contact planes 19 and 20 of the respective annular rings 17 and 18 in a cross section with respect to the circumferential extension direction of the annular rings 17 and 18.

[0038] Each inner gasket 15, 16 also includes two elastic members 23, 24, namely a first elastic member 23 and a second elastic member 24. The first elastic member 23 abuts against the first inner link 5 and the second inner link 6 or the associated inner sleeve 9, 10, respectively, and the second elastic member 24 abuts against the rotating sleeve 4. The elastic members apply a thrust to the two seat rings 17, 18 to press the contact planes 19, 20 between the two seat rings 17, 18, thereby creating a sealing effect between the two seat rings 17, 18.

[0039] According to the embodiment, each of the elastic members 23 and 24 is an O-ring; and wherein the seat rings 17 and 18 are mirror images of each other in shape.

[0040] According to an embodiment, the pin 3 includes a rotation axis XX, which defines an axial direction AA and a radial direction RR transverse to the axial direction AA.

[0041] According to the embodiment, the contact planes 19 and 20 are arranged according to the radial direction RR.

[0042] According to an embodiment, the first inner link 5 and / or the second inner link 6 are associated with the pin 3 via corresponding inner sleeves 9 and / or inner sleeves 10; and wherein the inner sleeves 9 and / or the inner sleeves 10 are at least partially inserted between the first inner link 5 and / or the second inner link 6 and the pin 3.

[0043] According to an embodiment, the first inner link 5 and / or the second inner link 6 are integral with the inner sleeve 9 and / or the inner sleeve 10.

[0044] According to an embodiment, the first outer link 7 and / or the second outer link 8 are associated with the pin 3 via corresponding outer sleeves 11 and / or outer sleeves 12; and wherein the outer sleeves 11 and / or the outer sleeves 12 are at least partially inserted between the first outer link 7 and / or the second outer link 8 and the pin 3; and wherein the first outer link 7 and / or the second outer link 8 are integral with the outer sleeves 11 and / or the outer sleeves 12, and the outer sleeves 11 and / or the outer sleeves 12 are integral with the pin 3.

[0045] According to the embodiment, an inner spacer 29, 30 is provided between each inner link 5, 6 and the rotating sleeve 4 or between each inner sleeve 9, 10 and the rotating sleeve 4, thereby forming an inner washer chamber 31, 32 for accommodating the inner washers 15, 16.

[0046] According to the embodiment, an outer spacer 33, 34 is provided between each inner link 5, 6 and the adjacent outer link 7, 8 or between each inner sleeve 9, 10 and the adjacent outer sleeve 11, 12, thereby forming an outer washer chamber 35, 36 for accommodating the outer washers 13, 14.

[0047] According to the embodiment, an inner spacer 29, 30 is provided between each inner link 5, 6 and the rotating sleeve 4 or between each inner sleeve 9, 10 and the rotating sleeve 4, thereby forming an inner washer chamber 31, 32 for accommodating the inner washers 15, 16.

[0048] According to the embodiment, an outer spacer 33, 34 is provided between each inner link 5, 6 and the adjacent outer link 7, 8 or between each inner sleeve 9, 10 and the adjacent outer sleeve 11, 12, thereby forming an outer washer chamber 35, 36 for accommodating the outer washers 13, 14.

[0049] According to the embodiment, the first outer link 7 or the first outer sleeve 11 abuts against the outer spacer 33, the outer spacer 33 abuts against the first inner link 5 or the first inner sleeve 9, the first inner link 5 or the first inner sleeve 9 abuts against the inner spacer 29, the inner spacer 29 abuts against the rotating sleeve 4, the rotating sleeve 4 abuts against the inner spacer 30, the inner spacer 30 abuts against the second inner link 6 or the second inner sleeve 10, the second inner link 6 or the second inner sleeve 10 abuts against the outer spacer 34, and the outer spacer 34 abuts against the second outer link 8 or the second outer sleeve 12.

[0050] According to the embodiment, each of the first outer gasket 13 or the second outer gasket 14 is respectively housed in the outer gasket chamber 35, 36, and each of the first outer gasket 13 or the second outer gasket 14 works in a sealing manner against the corresponding first outer link 7 or the second outer link 8 or against the corresponding first outer sleeve 11 or the second outer sleeve 12, and works in a sealing manner against the corresponding first inner link 5 or the second inner link 6 or against the corresponding first inner sleeve 9 or the second inner sleeve 10.

[0051] According to the embodiment, each of the first outer gasket 13 or the second outer gasket 14 is respectively housed in the outer gasket chamber 35, 36, and each of the first outer gasket 13 or the second outer gasket 14 works in a sealing manner against the corresponding first outer link 7 or the second outer link 8 or against the corresponding first outer sleeve 11 or the second outer sleeve 12, and works in a sealing manner against the corresponding first inner link 5 or the second inner link 6 or against the corresponding first inner sleeve 9 or the second inner sleeve 10.

[0052] Each of the first outer washer 13 or the second outer washer 14 is respectively accommodated in the outer washer chambers 35, 36, and each of the first outer washer 13 or the second outer washer 14 is respectively provided with a gap between the outer washer 13, 14 and the pin 3, or with a gap between the outer washer 13, 14 and the outer spacers 33, 34 provided between each inner link 5, 6 and the adjacent outer link 7, 8 or between each inner sleeve 9, 10 and the adjacent outer sleeve 11, 12.

[0053] According to the embodiment, each of the first outer washer 13 or the second outer washer 14 is respectively housed in the outer washer chambers 35 and 36, and each of the first outer washer 13 or the second outer washer 14 works in a direction parallel to the rotation axis XX of the pin or the axial direction AA defined by the pin and also in the radial direction RR—that is, a direction orthogonal to the axial direction AA—that is, a direction orthogonal to the axial direction AA. Furthermore, each of the first outer washer 13 or the second outer washer 14 works in a direction parallel to the rotation axis XX of the pin or the axial direction AA defined by the pin and also in a direction orthogonal to the axial direction AA.

[0054] According to the embodiment, each of the first inner washer 15 or the second inner washer 16 is respectively accommodated in the inner washer chamber 31, 32, and each of the first inner washer 15 or the second inner washer 16 is respectively provided with a gap between the inner washer 15, 16 and the pin 3, or with a gap between the inner washer 15, 16 and the inner spacer 29, 30 provided between each inner link 5, 6 and the adjacent rotating sleeve 4 or between each inner sleeve 9, 10 and the adjacent rotating sleeve 4.

[0055] According to an embodiment, each of the first inner washer 15 or the second inner washer 16 is respectively housed in an inner washer chamber 31, 32 that is completely formed in the inner links 5, 6 or the inner sleeves 9, 10.

[0056] According to an embodiment, each of the first inner washer 15 or the second inner washer 16 is respectively housed in an inner washer chamber 31, 32 that is completely formed in the rotating sleeve 4.

[0057] According to the embodiment, each of the first inner washer 15 or the second inner washer 16 is respectively partially housed in an inner washer chamber 31, 32 that is fully formed in the inner links 5, 6 or the inner sleeves 9, 10, and is also partially housed in an inner washer chamber 31, 32 that is fully formed in the rotating sleeve 4.

[0058] According to the embodiment, each of the first outer washer 13 or the second outer washer 14 includes at least a third elastic member 37 and a fourth elastic member 38, which at least seal against a corner portion 39. The corner portion 39 is formed between an annular wall oriented in a direction parallel to the axial direction AA parallel to the rotation axis XX of the pin 3 and a radial wall oriented in a coplanar radial direction RR, all of which are orthogonal to the rotation axis XX of the pin 3.

[0059] According to the embodiment, the corner portion 39 is formed in the first outer link 7 or the second outer link 8, or in the first outer sleeve 11 or the second outer sleeve 12.

[0060] According to an embodiment, each of the first outer washer 13 or the second outer washer 14 includes at least one elastic member 40, which at least seals against a radial wall disposed in the first inner link 5 or the second inner link 6, or at least seals against a radial inner sleeve wall 41 of the first inner sleeve 9 or the second inner sleeve 10, wherein the radial wall and the radial inner sleeve wall 41 are oriented according to a plurality of coplanar radial directions RR orthogonal to the rotation axis XX of the pin 3.

[0061] According to an embodiment, each of the first outer washer 13 or the second outer washer 14 includes at least one elastic member 37, 38. The at least one elastic member 37, 38 is sealed against the corner portion or elastic lip member 40 of the elastic member 37, 38. The corner portion or elastic lip member is formed by two washer walls that converge at an angle between 100 degrees and 45 degrees. The corner portion or elastic lip member 40 at least abuts against a radial wall disposed in the first inner link 5 or the second inner link 6, or at least against a radial inner sleeve wall 41 of the first inner sleeve 9 or the second inner sleeve 10. The radial wall and the radial inner sleeve wall 41 are oriented according to a plurality of coplanar radial directions RR orthogonal to the axis of rotation XX of the pin 3, so as to form an acute angle between each of the two converging washer walls and the radial wall 41.

[0062] According to an embodiment, each of the first inner washer 15 or the second inner washer 16 includes a first elastic member 23 and a second elastic member 24, wherein the first elastic member 23 is placed on a first inclined outer annular surface 42 formed in the respective first inner link 5 and the second inner link 6 or formed in the associated inner sleeves 9, 10, and the second elastic member 24 is placed against a second inclined outer annular surface 43 formed in the rotating sleeve 4.

[0063] According to the embodiment, the first inclined outer annular surface 42 and the second inclined outer annular surface 43 each form acute angles C and D in the cross section relative to the contact planes 19 and 20 of the corresponding annular rings 17 and 18 in the circumferential extension direction of the annular rings 17 and 18, and the first elastic member 23 or the second elastic member 24 acts on the corresponding annular rings 17 and 18.

[0064] According to an embodiment, each of the first inner washer 15 or the second inner washer 16 includes a first elastic member 23 and a second elastic member 24, wherein the first elastic member 23 is placed on a first inclined outer annular surface 42 formed in the respective first inner link 5 and the second inner link 6 or formed in the associated inner sleeves 9, 10, and the second elastic member 24 is placed against a second inclined outer annular surface 43 formed in the rotating sleeve 4.

[0065] According to the embodiment, the first inclined outer annular surface 42 and the second inclined outer annular surface 43 each form acute angles C and D in the cross section relative to the contact planes 19 and 20 of the corresponding annular rings 17 and 18 in the circumferential extension direction of the annular rings 17 and 18, and the first elastic member 23 or the second elastic member 24 acts on the corresponding annular rings 17 and 18.

[0066] According to the embodiment, the first inner washer 15 or the second inner washer 16 forms a convergence toward the pin 3.

[0067] According to the embodiment, each acute angle C, D of the first inclined outer annular surface 42 and the second inclined outer annular surface 43 is greater than each acute angle A or B of the inclined annular surfaces 21, 22 of the annular rings 17, 18.

[0068] According to an embodiment, at least one of the seat rings 17 and 18 has a radial annular protrusion 44 in a cross section in the circumferential extension direction relative to the annular rings 17 and 18. The radial annular protrusion 44 extends mainly in a radial direction relative to the rotation axis XX of the pin 3, and the radial annular protrusion 44 is connected to the inclined annular surfaces 21 and 22 to form a connection.

[0069] According to an embodiment, at least one of the seat rings 17 and 18 has a radial annular protrusion 44 in a cross section in the circumferential extension direction relative to the annular rings 17 and 18. The radial annular protrusion 44 extends mainly in a radial direction relative to the rotation axis XX of the pin 3, and the radial annular protrusion 44 is connected to the inclined annular surfaces 21 and 22 to form a connection.

[0070] According to an embodiment, the connecting portion forms a support for the first inner washer 15 or the second inner washer 16.

[0071] According to an embodiment, at least one of the seat rings 17 and 18 has an axial annular protrusion 45 in a cross section in the circumferential extension direction relative to the annular rings 17 and 18. The axial annular protrusion 45 extends mainly in a direction parallel to the rotation axis XX of the pin 3, and the axial annular protrusion 45 is connected to the inclined annular surfaces 21 and 22 to form a connection.

[0072] According to an embodiment, at least one of the seat rings 17 and 18 has an axial annular protrusion 45 in a cross section in the circumferential extension direction relative to the annular rings 17 and 18. The axial annular protrusion 45 extends mainly in a direction parallel to the rotation axis XX of the pin 3, and the axial annular protrusion 45 is connected to the inclined annular surfaces 21 and 22 to form a connection.

[0073] According to an embodiment, the connecting portion forms a support for the first inner washer 15 or the second inner washer 16.

[0074] According to an embodiment, the seat rings 17 and 18 are made of a material comprising ductile iron or steel.

[0075] According to an embodiment, the first contact plane 19 and the second contact plane 20 are lapped surfaces, which are pressed against each other by the first elastic member and the second elastic member to form a seal that prevents lubricant leakage.

[0076] According to the embodiment, the rotating sleeve 4 extends between the first inner link 5 and / or the second inner link 6 and the pin 3, or extends between the first inner sleeve 9 and / or the second inner sleeve 10 and the pin 3, so that the outer sleeve surface 46 faces the first inner link 5 and / or the second inner link 6 or is located between the first inner sleeve 9 and / or the second inner sleeve 10.

[0077] According to an embodiment, a first radial washer 27 and / or a second radial washer 28 are disposed between the outer sleeve surface 46 or a suitable radial washer seat 47 and the first inner link 5 and / or the second inner link 6, or are disposed between the first inner sleeve 9 and / or the second inner sleeve 10, with the radial washer seat 47 formed in the swivel sleeve 4 through the outer sleeve surface 46.

[0078] According to an embodiment, the rotating sleeve 4 includes two opposite rotating sleeve ends 25 and 26.

[0079] According to the embodiment, each rotating sleeve end 25, 26 is partially inserted between the first inner link 5 or the second inner link 6 and the pin 3, or between the corresponding inner sleeve 9, 10 and the pin 3.

[0080] According to the embodiment, radial washers 27 and 28 are provided between each rotating sleeve end 25, 26 and the corresponding first inner link 5 or second inner link 6, or between each rotating sleeve end 25, 26 and the corresponding inner sleeve 9, 10.

[0081] According to the embodiment, the radial washers 27 and 28 are O-rings 48.

[0082] According to the embodiment, the radial washers 27 and 28 are O-rings 48 abutting against the boot portion 49; wherein the O-ring 48 is accommodated in a radial washer seat 47 formed in the rotating sleeve 4 through the outer sleeve surface 46, and the O-ring 48 biases the boot portion 49 in a radial direction RR orthogonal to the rotation axis of the pin 3, thereby causing the boot portion 49 to press against the first inner link 5 and / or the second inner link 6 or against the first inner sleeve 9 and / or the second inner sleeve 10.

[0083] According to the embodiment, the radial washers 27 and 28 are O-rings 48 abutting against the boot portion 49; wherein, the O-ring 48 is accommodated in a radial washer seat 47 formed in the rotating sleeve 4 through the outer sleeve surface 46, and the O-ring 48 biases the boot portion 49 in a radial direction RR orthogonal to the rotation axis of the pin 3, thereby causing the boot portion 49 to press against the first inner link 5 and / or the second inner link 6 or against the first inner sleeve 9 and / or the second inner sleeve 10 in a scraping manner.

[0084] According to the embodiment, the pin 3 is a hollow pin, and a pin cavity 50 is formed inside the hollow pin. The pin cavity 50 is adapted to accommodate a lubricating element, for example, a grease, or more preferably, a lubricating oil.

[0085] According to an embodiment, the pin 3 includes a supply conduit 51 that fluidly connects the pin cavity 50 to the outer pin surface 52 located in a portion of the pin 3 disposed inside the rotating sleeve 4.

[0086] According to the embodiment, the pin 3 is a hollow pin, and a pin cavity 50 is formed inside the hollow pin. The pin cavity 50 is adapted to accommodate a lubricating element, for example, a grease, or more preferably, a lubricating oil.

[0087] The pin 3 includes a supply conduit 51 that fluidly connects the pin cavity 50 to the outer pin surface 52 of a portion of the pin 3 located inside the rotating sleeve 4, where an annular sleeve recess 53 is present, forming a compartment for collecting and distributing lubricating elements between the rotating sleeve 4 and the pin 3.

[0088] Figure Labels 1 Track components 2 Tracks 3. Selling 4. Rotary sleeve 5 First Inner Link 6 Second Inner Link 7 First external link 8 Second outer link 9 First inner sleeve 10 Second Inner Sleeve 11 First outer tube 12 Second outer tube 13 First outer washer 14 Second outer washer 15 First Inner Washer 16 Second Inner Washer 17 First Ring 18 Second Ring 19 First contact plane 20 Second contact plane 21 First inclined annular surface 22 Second inclined annular surface 23 First elastic member 24 Second elastic member 25 First rotating sleeve end 26 Second Rotating Sleeve End 27 First radial washer 28 Second radial washer 29 Inner spacer 30 Inner spacer 31 Inner Washer Studio 32 Inner Washer Studio 33. External spacer 34. External spacer 35 Outer Washer Workshop 36 Outer Washer Workshop 37. The third elastic component of the outer washer 38. The fourth elastic component of the outer washer 39. Corner 40 Flexible lip components 41 Radial inner sleeve wall 42 First inclined outer annular surface 43 Second inclined outer annular surface 44 Radial annular protrusion 45 Axial annular protrusion 46 Outer tube surface 47 Radial washer seat 48 Radial Washers O-rings 49 Radial washer boot section 50 pinholes 51 Supply Pipeline 52 Export surface 53. Annular sleeve recess 54 Tractors XX pin axis RR is the direction or radial direction or perpendicular to the pin axis. AA is the direction parallel to the pin axis or the axial direction. A. The opening angle between the first contact plane and the first inclined surface B. Angle between the second contact plane and the second inclined surface C. The opening angle between the first contact plane and the first inclined outer annular surface D. The opening angle between the second contact plane and the second inclined outer annular surface.

Claims

1. A track component (1) for a track (2) of a tracked vehicle (54), said track component (1) comprising: - Sell (3); - Rotary sleeve (4), which is fitted onto the pin (3) and is rotatable relative to the pin (3); - A first inner link (5) and a second inner link (6), the first inner link (5) and the second inner link (6) being directly or indirectly associated with the pin (3) through corresponding inner sleeves (9, 10), and the first inner link (5) and the second inner link (6) being rotatable relative to the pin (3) and being arranged on opposite sides of the rotating sleeve (4); - A first outer link (7) and a second outer link (8), the first outer link (7) and the second outer link (8) being directly or indirectly associated with the pin (3) through corresponding outer sleeves (11, 12), and the first outer link (7) and the second outer link (8) being integral with the pin (3) so that the first outer link (7) and the second outer link (8) can rotate together with the pin (3); - Wherein, the first inner link (5) and the second inner link (6) are respectively arranged between one of the first outer link (7) and the second outer link (8) and the rotating sleeve (4); - and wherein, in each of the first outer link (7) and the second outer link (8) or the associated outer sleeve (11, 12) and the facing link or corresponding inner sleeve (9, 10) of the first inner link (5) and the second inner link (6), a first outer washer (13) and a second outer washer (14) are respectively provided. - and wherein, a first inner washer (15) and a second inner washer (16) are respectively provided between each of the first inner link (5) and the second inner link (6) or the associated inner sleeve (9, 10) and the facing rotating sleeve (4). Its features are, The first inner gasket (15) and the second inner gasket (16) each include two seat rings (17, 18), each of the two seat rings (17, 18) having a contact plane (19, 20), the contact planes (19, 20) being arranged to face each other, contact each other and seal each other; Each of the seat rings (17, 18) includes at least one inclined annular surface (21, 22), and at least one of the inclined annular surfaces (21, 22) forms an acute angle (A, B) with respect to the contact plane (19, 20) of the respective annular ring (17, 18) in a cross section with respect to the circumferential extension direction of the annular ring (17, 18). Each inner gasket (15, 16) also includes two elastic members (23, 24), namely a first elastic member (23) and a second elastic member (24), the first elastic member (23) abutting against the first inner link (5) and the second inner link (6) or the associated inner sleeve (9, 10), and the second elastic member (24) abutting against the rotating sleeve (4); the elastic members exert a thrust on the two seat rings (17, 18) to press the contact plane (19, 20) between the two seat rings (17, 18), thereby creating a sealing effect between the two seat rings (17, 18).

2. The track component (1) according to claim 1, wherein Each of the elastic members (23, 24) is an O-ring; and wherein, The seat rings (17, 18) are mirror images of each other in shape.

3. The track component (1) according to claim 1 or 2, wherein The pin (3) includes a rotation axis (XX), which defines an axial direction (AA) and a radial direction (RR) transverse to the axial direction (AA); and wherein The contact planes (19, 20) are arranged according to the radial direction (RR).

4. The track component (1) according to any one of the preceding claims, wherein The first inner link (5) and / or the second inner link (6) are associated with the pin (3) via corresponding inner sleeves (9 and / or 10); and wherein, The inner sleeve (9 and / or 10) is at least partially inserted between the first inner link (5) and the pin (3) and / or between the second inner link (6) and the pin (3); And / or one of them The first inner link (5) and / or the second inner link (6) are integral with the inner sleeve (9 and / or 10); And / or one of them The first outer link (7) and / or the second outer link (8) are associated with the pin (3) via corresponding outer sleeves (11 and / or 12); and wherein the outer sleeves (11 and / or 12) are at least partially inserted between the first outer link (7) and the pin (3) and / or between the second outer link (8) and the pin (3); and wherein the first outer link (7) and / or the second outer link (8) are integral with the outer sleeves (11 and / or 12), and the outer sleeves (11 and / or 12) are integral with the pin (3).

5. The track component (1) according to any one of the preceding claims, wherein An inner spacer (29, 30) is provided between each inner link (5, 6) and the rotating sleeve (4) or between each inner sleeve (9, 10) and the rotating sleeve (4), thereby forming an inner washer chamber (31, 32) for receiving the inner washer (15, 16). And / or one of them An outer spacer (33, 34) is provided between each inner link (5, 6) and the adjacent outer link (7, 8) or between each inner sleeve (9, 10) and the adjacent outer sleeve (11, 12), thereby forming an outer washer chamber (35, 36) for receiving the outer washer (13, 14). And / or one of them An inner spacer (29, 30) is provided between each inner link (5, 6) and the rotating sleeve (4) or between each inner sleeve (9, 10) and the rotating sleeve (4), thereby forming an inner washer chamber (31, 32) for receiving the inner washer (15, 16); and therein An outer spacer (33, 34) is provided between each inner link (5, 6) and the adjacent outer link (7, 8) or between each inner sleeve (9, 10) and the adjacent outer sleeve (11, 12), thereby forming an outer washer chamber (35, 36) for receiving the outer washer (13, 14); and wherein The first outer link (7) or the first outer sleeve (11) abuts against the outer spacer (33), the outer spacer (33) abuts against the first inner link (5) or the first inner sleeve (9), the first inner link (5) or the first inner sleeve (9) abuts against the inner spacer (29), the inner spacer (29) abuts against the rotating sleeve (4), the rotating sleeve (4) abuts against the inner spacer (30), the inner spacer (30) abuts against the second inner link (6) or the second inner sleeve (10), the second inner link (6) or the second inner sleeve (10) abuts against the outer spacer (34), and the outer spacer (34) abuts against the second outer link (6) or the second outer sleeve (12).

6. The track component (1) according to any one of the preceding claims, wherein Each of the first outer gasket (13) or the second outer gasket (14) is respectively housed in an outer gasket chamber (35, 36), and each of the first outer gasket (13) or the second outer gasket (14) operates in a sealing manner against the corresponding first outer link (7) or the second outer link (8) or in a sealing manner against the corresponding first outer sleeve (11) or the second outer sleeve (12), and operates in a sealing manner against the corresponding first inner link (5) or the second inner link (6) or in a sealing manner against the corresponding first inner sleeve (9) or the second inner sleeve (10); Or one of them Each of the first outer gasket (13) or the second outer gasket (14) is respectively housed in an outer gasket chamber (35, 36), and each of the first outer gasket (13) or the second outer gasket (14) operates in a sealing manner against the corresponding first outer link (7) or the second outer link (8) or against the corresponding first outer sleeve (11) or the second outer sleeve (12), and operates in a sealing manner against the corresponding first inner link (5) or the second inner link (6) or against the corresponding first inner sleeve (9) or the second inner sleeve (10); and wherein Each of the first outer washer (13) or the second outer washer (14) is respectively housed in the outer washer chamber (35, 36), and each of the first outer washer (13) or the second outer washer (14) respectively leaves a gap between the outer washer (13, 14) and the pin (3), or leaves a gap between the outer washer (13, 14) and the outer spacer (33, 34) disposed between each inner link (5, 6) and the adjacent outer link (7, 8) or disposed between each inner sleeve (9, 10) and the adjacent outer sleeve (11, 12); Or one of them Each of the first outer washer (13) or the second outer washer (14) is respectively housed in an outer washer chamber (35, 36), and each of the first outer washer (13) or the second outer washer (14) operates in a direction parallel to the axis of rotation (XX) of the pin or the axial direction (AA) defined by the pin and also in a radial direction (RR), i.e., orthogonal to the axial direction (AA), against the corresponding first outer link (7) or the second outer link (8) or against the corresponding first outer sleeve (11) or the second outer sleeve (12), and each of the first outer washer (13) or the second outer washer (14) operates in a direction parallel to the axis of rotation (XX) of the pin or the axial direction (AA) defined by the pin, against the corresponding first inner link (5) or the second inner link (6), or against the corresponding first inner sleeve (9) or the second inner sleeve (10).

7. The track component (1) according to any one of the preceding claims, wherein Each of the first inner washer (15) or the second inner washer (16) is respectively housed in an inner washer chamber (31, 32), and each of the first inner washer (15) or the second inner washer (16) is respectively provided with a gap between the inner washer (15, 16) and the pin (3), or with a gap between the inner washer (15, 16) and an inner spacer (29, 30) provided between each inner link (5, 6) and the adjacent rotating sleeve (4) or between each inner sleeve (9, 10) and the adjacent rotating sleeve (4).

8. The track component (1) according to any one of the preceding claims, wherein Each of the first inner washer (15) or the second inner washer (16) is respectively housed in an inner washer chamber (31, 32) that is completely formed in the inner link (5, 6) or the inner sleeve (9, 10); Or one of them Each of the first inner washer (15) or the second inner washer (16) is respectively housed in an inner washer chamber (31, 32) formed entirely in the rotating sleeve (4); Or one of them Each of the first inner washer (15) or the second inner washer (16) is respectively partially housed in an inner washer chamber (31, 32) formed entirely in the inner link (5, 6) or the inner sleeve (9, 10), and is also partially housed in an inner washer chamber (31, 32) formed entirely in the rotating sleeve (4).

9. The track component (1) according to any one of the preceding claims, wherein Each of the first outer washer (13) or the second outer washer (14) includes at least a third elastic member (37) and a fourth elastic member (38), the third elastic member (37) and the fourth elastic member (38) at least sealingly abutting against a corner portion (39), the corner portion (39) being formed between an annular wall oriented according to a direction parallel to the axial direction (AA) parallel to the rotation axis (XX) of the pin (3) and a radial wall oriented according to a coplanar radial direction (RR), the coplanar radial direction (RR) being entirely orthogonal to the rotation axis (XX) of the pin (3); wherein The corner portion (39) is formed in the first outer link (7) or the second outer link (8) or in the first outer sleeve (11) or the second outer sleeve (12); and wherein Each of the first outer washer (13) or the second outer washer (14) includes at least one elastic member (40), at least one of the elastic members (40) being at least sealingly abutting against a radial wall disposed in the first inner link (5) or the second inner link (6), or at least sealingly abutting against a radial inner sleeve wall (41) of the first inner sleeve (9) or the second inner sleeve (10), the radial wall and the radial inner sleeve wall (41) being oriented according to a plurality of coplanar radial directions (RR) orthogonal to the axis of rotation (XX) of the pin (3); Or one of them Each of the first outer gasket (13) or the second outer gasket (14) includes at least one elastic member (37, 38), at least one of the elastic members (37, 38) sealingly abutting with a corner portion or an elastic lip member (40) of the elastic member (37, 38), the corner portion or the elastic lip member being formed by two gasket walls converging at an angle between 100 degrees and 45 degrees, wherein, The corner portion or the elastic lip member (40) at least abuts against the radial wall disposed in the first inner link (5) or the second inner link (6), or at least against the radial inner sleeve wall (41) of the first inner sleeve (9) or the second inner sleeve (10), the radial wall and the radial inner sleeve wall (41) being oriented according to a plurality of coplanar radial directions (RR) orthogonal to the axis of rotation (XX) of the pin (3) so as to form an acute angle between each of the two converging washer walls and the radial wall (41).

10. The track component (1) according to any one of the preceding claims, wherein Each of the first inner washer (15) or the second inner washer (16) includes a first elastic member (23) and a second elastic member (24), the first elastic member (23) and the second elastic member (24) positioning the first elastic member (23) on a first inclined outer annular surface (42) formed in the respective first inner link (5) and second inner link (6) or formed in the associated inner sleeve (9, 10), and positioning the second elastic member (24) against a second inclined outer annular surface (43) formed in the rotating sleeve (4); wherein The first inclined outer annular surface (42) and the second inclined outer annular surface (43) each form an acute angle (C, D) relative to the contact plane (19, 20) of the corresponding annular ring (17, 18) in a cross section in the circumferential extension direction relative to the annular ring (17, 18), and the first elastic member (23) or the second elastic member (24) acts on the corresponding annular ring (17, 18); Or one of them Each of the first inner washer (15) or the second inner washer (16) includes a first elastic member (23) and a second elastic member (24), the first elastic member (23) and the second elastic member (24) positioning the first elastic member (23) on a first inclined outer annular surface (42) formed in the respective first inner link (5) and second inner link (6) or formed in the associated inner sleeve (9, 10), and positioning the second elastic member (24) against a second inclined outer annular surface (43) formed in the rotating sleeve (4); wherein The first inclined outer annular surface (42) and the second inclined outer annular surface (43) each form an acute angle (C, D) with respect to the contact plane (19, 20) of the corresponding annular rings (17, 18) in a cross section in the circumferential extension direction relative to the annular rings (17, 18), and the first elastic member (23) or the second elastic member (24) acts on the corresponding annular rings (17, 18); and wherein The first inner washer (15) or the second inner washer (16) forms a convergence toward the pin (3).

11. The track component (1) according to the preceding claim, wherein Each acute angle (C, D) of the first inclined outer annular surface (42) and the second inclined outer annular surface (43) is greater than each acute angle (A or B) of the inclined annular surface (21, 22) of the annular ring (17, 18). Or one of them At least one of the seat rings (17, 18) has a radial annular protrusion (44) in a cross section in the circumferential extension direction relative to the annular rings (17, 18), the radial annular protrusion (44) extending mainly in the radial direction relative to the axis of rotation (XX) of the pin (3), and the radial annular protrusion (44) connecting to the inclined annular surfaces (21, 22) to form a connection. Or one of them At least one of the seat rings (17, 18) has a radial annular protrusion (44) in a cross section in the circumferential extension direction relative to the annular rings (17, 18), the radial annular protrusion (44) extending primarily in the radial direction relative to the axis of rotation (XX) of the pin (3), and the radial annular protrusion (44) connecting to the inclined annular surfaces (21, 22) to form a connection; and wherein The connecting portion forms a support for the first inner washer (15) or the second inner washer (16); And / or one of them At least one of the seat rings (17, 18) has an axial annular protrusion (45) in a cross section in the circumferential extension direction relative to the annular rings (17, 18), the axial annular protrusion (45) extending mainly along the direction parallel to the rotation axis (XX) of the pin (3), and the axial annular protrusion (45) connecting to the inclined annular surfaces (21, 22) to form a connection. Or one of them At least one of the seat rings (17, 18) has an axial annular protrusion (45) in a cross-section relative to the circumferential extension direction of the annular rings (17, 18). The axial annular protrusion (45) extends primarily along the direction parallel to the axis of rotation (XX) of the pin (3), and the axial annular protrusion (45) connects to the inclined annular surfaces (21, 22) to form a connection; and wherein The connecting portion forms a support for the first inner washer (15) or the second inner washer (16).

12. The track component (1) according to any one of the preceding claims, wherein The seat rings (17, 18) are made of a material comprising ductile iron or steel; and wherein The first contact plane (19) and the second contact plane (20) are grinding surfaces, which are pressed together by the first elastic member and the second elastic member to form a seal that prevents lubricant leakage.

13. The track component (1) according to any one of the preceding claims, wherein The rotating sleeve (4) extends between the first inner link (5) and / or the second inner link (6) and the pin (3), or extends between the first inner sleeve (9) and / or the second inner sleeve (10) and the pin (3), such that the outer sleeve surface (46) faces the first inner link (5) and / or the second inner link (6) or is located between the first inner sleeve (9) and / or the second inner sleeve (10); and wherein A first radial washer (27) and / or a second radial washer (28) are disposed on the outer tube surface (46) or a suitable radial washer seat (47) between the first inner link (5) and / or the second inner link (6) or between the first inner sleeve (9) and / or the second inner sleeve (10), the radial washer seat (47) being formed in the swivel sleeve (4) through the outer tube surface (46); Or one of them The rotating sleeve (4) includes two opposite rotating sleeve ends (25, 26); and wherein Each rotating sleeve end (25, 26) is partially inserted between the first inner link (5) or the second inner link (6) and the pin (3), or between the corresponding inner sleeve (9, 10) and the pin (3); And among them, A radial washer (27, 28) is provided between each rotating sleeve end (25, 26) and the corresponding first inner link (5) or second inner link (6) or between each rotating sleeve end (25, 26) and the corresponding inner sleeve (9, 10).

14. The track component (1) according to the preceding claim, wherein The radial washers (27, 28) are O-rings (48); Or one of them The radial washers (27, 28) are O-rings (48) that abut against the boot part (49); wherein, The O-ring (48) is received in a radial washer seat (47) formed in the rotating sleeve (4) through the outer sleeve surface (46), and the O-ring (48) biases the boot portion (49) in a radial direction (RR) orthogonal to the axis of rotation of the pin (3), so that the boot portion (49) presses against the first inner link (5) and / or the second inner link (6) or against the first inner sleeve (9) and / or the second inner sleeve (10); Or one of them The radial washers (27, 28) are O-rings (48) abutting against the boot (49); wherein the O-ring (48) is housed in a radial washer seat (47) formed in the rotating sleeve (4) through the outer sleeve surface (46), and the O-ring (48) biases the boot (49) in a radial direction (RR) orthogonal to the axis of rotation of the pin (3), thereby causing the boot (49) to press against the first inner link (5) and / or the second inner link (6) or against the first inner sleeve (9) and / or the second inner sleeve (10) in a scraping manner.

15. The track component (1) according to any one of the preceding claims, wherein The pin (3) is a hollow pin, and a pin cavity (50) is formed inside the hollow pin. The pin cavity (50) is adapted to accommodate, for example, a lubricating element, such as grease, or more preferably, lubricating oil; and wherein The pin (3) includes a supply conduit (51) that fluidly connects the pin cavity (50) to the outer pin surface (52) located in a portion of the pin (3) disposed inside the rotating sleeve (4). Or one of them The pin (3) is a hollow pin, and a pin cavity (50) is formed inside the hollow pin. The pin cavity (50) is adapted to accommodate, for example, a lubricating element, such as grease, or more preferably, lubricating oil; and wherein The pin (3) includes a supply conduit (51) that fluidly connects the pin cavity (50) to the outer pin surface (52) of a portion of the pin (3) located inside the rotating sleeve (4), where an annular sleeve recess (53) is present, the annular sleeve recess (53) forming a compartment for collecting and distributing the lubricating element between the rotating sleeve (4) and the pin (3).

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