TW414769B - Inner transverse ply for an endless elastomeric track - Google Patents

Abstract

An endless elastomeric track (10) for a tractor or crawler includes an elastomeric body (26) having an outer surface (22) and an inner surface (16). A series of lugs (18) project from the inner surface (16) and engage a series of wheels (12 and 14) that drive the track (10). A second series of lugs (20) extends from the outer surface (22) to provide traction between the track (10) and the ground. A ply of main cords (28) is carried in the elastomeric body (26) in a longitudinal arrangement. Two of reinforcing plies (32 and 34) are carried between the ply of main cords (28) and the outer surface (22) of the track (10). A lateral ply (36) is carried in the elastomeric body (26) between the main cord (28) and the inner surface (16) of the track (10). The lateral ply (36) wraps around the lateral edges (38 and 40) in a pair of wrapped portions (42 and 44). The lateral ply (36) then extends inwardly as a pair of extensions (46 and 48) that do not extend completely across the span of the main cords (28). The extensions (46 and 48) are disposed between the ply of main cords (28) and the first reinforcing ply (32).

Description

414769 V. Description of Invention α)-Cross Reference to JG Application This application claims the benefit of US Patent Provisional Application No. 60 / 060,483 filed on September 30, 1997. BACKGROUND OF THE INVENTION Field of the Invention The present invention relates generally to the basic structure of a flexible endless elastic track, which is generally used in hoisting machines and crawlers. In detail, the present invention relates to the arrangement of the inner lateral layers in an elastic track, wherein the track has a chord-reinforced structure with a plurality of layers. In detail, the present invention ^ relates to an elastic track, which has a longitudinal layer composed of at least one main chord line, and an inner transverse layer composed of ^ side-arranged chord lines, wherein the side-arranged chord line extends through The entire main chord line layer is wrapped around the facing edge of the main chord line layer. Background information Several types of agricultural and construction vehicles move on endless tracks, where the tracks are stretched by a number of wheels, making the tracks quite long and generally flat, which fits the ground where the vehicle is going to pass . Tracks are usually used in vehicles that must move on rough or broken ground. As a result, track systems are subject to extensive wear and tear from debris that is normally found in such environments. In addition, the track is subject to the dimensions and weight of the track and vehicle. ', The only quality of the endless track system can be made of elastic materials. This elastic material offers several advantages over metal chain crawlers that were used in the past. However, it is often necessary to strengthen the elastic track with reinforcement cables to provide track strength

C: \ DATA \ DATA28 \ 54802.ptd Page 6 414769 V. Description of the invention (2) and durability. One difficulty in manufacturing reinforced tracks is that the manufacturer must maintain the alignment of the cables while the tracks are being manufactured. It is known in the industry to provide a reinforced cable layer ' in an endless elastic track to provide track stability. US Patent No. 4,721,498 discloses a reinforced track configured with a plurality of chord layers to make the track stable during use. The disclosed track system includes a first layer having a gently arranged chord line, the first chord layer is adjacent to a second chord layer, and the chord line of the second layer is relative to the longitudinal direction of the track Configured at a positive angle. A third layer is adjacent to the second layer, and includes a chord line arranged at a negative angle, and the negative angle is greater than the angle of the second layer. The track further includes a fourth chord layer, the chord line of which It is configured laterally ^ In another embodiment of the invention * its patent teaches that the second and third layers are formed at equal but opposite directions, but this second layer is different from the third layer, so The system is quite advantageous. In particular, the patent discloses that forming the third layer with fewer ends or a smaller diameter cable is quite advantageous. The patent discloses that the combination of layers can offset the shear stress caused by the tension on the j track. U.S. Patent No. 5,211,609 discloses another reinforced elastic drive belt ' having a chord layer disposed at an opposite angle. This track system has a first | longitudinal layer and an adjacent second layer, wherein the chord line of the second layer is configured to i

A positive angle with respect to the longitudinal direction. A third layer is adjacent to the second layer 'but is arranged at a negative angle with respect to the longitudinal direction. The teaching | The teachings make these angles approximately equal, which is quite advantageous. The fourth layer i is arranged laterally on the third layer. As taught by Patent No. 1 498, I

C: \ DATA \ DATA28 \ 54802.ptd 414769 j V. Description of the invention (3) The '609 patent teaches that the configuration of these layers can roughly offset the side to provide the balance of the throbbing belt. U.S. Patent No. 5,57;}, No. 729 discloses another reinforced bullet j-belt 'which has chord layers arranged in different directions. The two laterally disposed layer systems can be separated by a third layer. The second layer system includes two gauge lines spirally wound around the edge of the layer body. One of the cables is wound in the S direction (the right-hand side spiral). The other cable is wound in the Z direction (the left-hand side spiral). This exclusive arrangement provides all the balances that may adversely affect the belt. Although these patents disclose the advantages of an elastically driven belt or track that resists with a configuration of multiple chord layers, there is no patent teaching, disclosure, or suggestion that a layer of body is wrapped in another layer to increase the track. Advantages of stability. In addition, nothing has been proposed to wrap an internal protective wrap around the lateral edges of the main chord line layer to provide additional protection of the main chord line layer. Therefore, in this industry, an endless elastic track is provided, which has a plurality of reinforcing layers, and one layer is wrapped on at least another layer to improve the stability of the track. SUMMARY OF THE INVENTION The purpose of the present invention is to provide an endless The elastic track is an improved layer arrangement method, which can increase the stability of the track. Another object of the present invention is to provide an endless elastic track to protect the longitudinal chord line. Another object of the present invention is to provide an endless elastic crawler, which is capable of driving force and driving force, and its mother is I, and "! Reduce neutrality. Have ~ it can be raised | it has 丨

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414769 Five 'invention description (4)!

I A horizontal layer is arranged inside the longitudinal chord line layer, which can protect the main chord line, while providing higher strength and stability of the track. Yet another object of the present invention is to provide an endless elastic track having an inner transverse layer which can wrap the side edges of the longitudinal main chord line layer. Yet another object of the present invention is to provide an endless elastic track having an inner transverse layer that can wrap all the other reinforcing layers of the track so that the unstable edges of the layer can be covered. These and other objects and advantages of the present invention can be obtained by the improved endless track, and its overall characteristics can be stated as follows: It includes an endless body with an inner surface and an outer surface. The endless main system has a Longitudinal axis; a main chord line layer that is carried by the endless body and is substantially parallel to the longitudinal axis: the main chord line layer has a pair of side edges, a surface facing the inner surface of the track, and One facing the upper surface of the outer surface of the track; a transverse layer of reinforced chords disposed between the main chord layer and the inner surface of the track; and the transverse layer extending over the entire lower surface of the main chord layer And includes a pair of wrapping portions, which are wrapped around the side edges of the main chord line layer. i

The drawings briefly explain I the preferred embodiment of the present invention, which is a diagram illustrating the best mode of the principle applied by the applicant of the case, which is explained in the following detailed description, and shown in the drawings, and its system It is specifically and uniquely designated and defined in the scope of the patent application attached to |. I FIG. 1 is a schematic side view of an endless elastic track of the present invention arranged on a plurality of rollers. Ί-Figure 2 is a fragmentary perspective view of a section of the endless elastic track of Figure 1, in which |

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414 ^ 69 Five 'Explanation (5) ~ ~ ~~ 一 ^ ~ -— Show the arrangement of the string layer. Fig. 3 is an enlarged cross-sectional view taken along section line 3_3 of Fig. 2, which shows the arrangement of the ends of the chord layer. Fig. 4 is a fragmentary cross section of another embodiment of the endless elastic crawler of the present invention. "Li Li view" which shows the arrangement of string layers. Fig. 5 is an enlarged cross-sectional view taken along section line 5-5 of Fig. 4, which shows the arrangement of the ends of the chord layer a. Description of the preferred embodiment. It is marked with the symbol i 0. When in use, the track 10 is mounted on at least two rollers 12 to maintain the position of the track 10. Usually at least one roller 12 is driving the roller 14 'which is engaged with the inner surface 16 of the track 10 and causes the track 10 to rotate around the rollers 12 and 14 in an endless manner. A series of protrusions 18 are preferably formed on the inner surface 16 of the track 10 so that the rollers 2 and 14 engage the driving track 10. Most of the track 10 is on its outer surface 22, and | further includes a plurality of protrusions 20, so that the vehicle 10 using the track 10 has the drag force required by a user with heavy equipment. The track 10 series includes an elastic body 26 ′ and carries a main reinforcing string thereon! The rolled layer 28 of 28 and the reinforced string layer ^ The main reinforced string layer 28 is continuously formed on the track along an endless direction, wherein the endless direction is parallel to the longitudinal axis 30 of the track 10. In the embodiment i of the crawler track 10 shown in Figs. 1-3, the layer body 28 is arranged inside the rolling reinforcement layers 32 and 34, so that the main chord line layer 28 is arranged in the layer body 32 and 34 and the inner surface 16 of the track 10. The reinforcement layers 32 and 34 are composed of a plurality of single chords, and the chords |

C: \ DATA \ DATA28 \ 54802.ptd Page 10 414769 Ⅴ. The description of the invention (6) The diameter is slightly smaller than the diameter of the chord line in the main chord line layer 28. The chord lines of the reinforcement layers 3 2 and 34 are arranged at an angle equal to but opposite to the longitudinal axis 30 of the main chord line layer 28. The arrangement of the reinforcement layers 32 and 34 can offset the lateral force on the track 10, and make the track 10 rotate around the rollers 12 and 14 i without excessive friction. The track 10 also has a rolling压 内 内 横 层 36。 The inner lateral layer 36. The inner transverse layer 36 is arranged between the main chord layer 28 and the inner surface 16 of the track 10. The layer body 36 is used to protect the main chord layer 28 from damage caused by penetration of the inner surface 16 of the track 10. This penetration is usually caused by the contact of the track 10 when the track 10 is mounted on the rollers 12 and 14. The inner lateral layer 36 is constituted by a plurality of chord lines arranged substantially perpendicular to the longitudinal axis 30 of the track. According to one of the main features of the present invention, the inner transverse layer extends laterally over the entire lower surface 37 of the main string layer 28 and surrounds each side edge 38 and 40 of the main string layer 28 to form a pair Wrapping sections 42 and 44. The inner transverse layer 36 is then partially folded back onto the upper chord layer 28 surface 45 with partial extensions 46 and 48. The extensions 46 and 48 are arranged between the upper surface 45 of the main technical layer 28 and the reinforcing layers 32 and 34. The inner transverse layer 36 and the wrapping portions 42 and 44 are separated by the material of the elastic body 26, and ||, and 丨 I is separated from the main chord line layer 28. The extensions 46 and 48 extend only through the width of the portion above the main chord line 28, leaving 2 | on the upper surface 45 of the main chord line layer 28; the central portion 50 covered by the inner transverse layer 36. In a preferred embodiment of the present invention, the 'extensions 46 and 48 both extend from the side edges 38 and 40 inwardly by approximately j to six inches. If required, the side edges 38 and 40 can also extend over the entire main chord four | The wraps 42 and 44 and the extensions 46 and 48 are used to protect the side edges j |

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5. Description of the invention (7) and 40 are free from damage. The wraps 42 and 44 and the extensions 46 and 48 also provide the strength and stiffness of the track 10. By providing the winding portions 42 and 44, the main chord line layer 28 does not move during the manufacturing process. Another embodiment of an endless track is shown in Figs. 4 and 5, and its entirety is indicated by the reference numeral 100. When in use, the track 10 is mounted on a plurality of rollers (not shown) to engage the inner surface 116 of the track 100 and cause the track 100 to rotate around the rollers in an endless manner. The track 100 is formed with a plurality of protrusions 120 on its outer surface 122, so that a vehicle employing the track 100 has a drag force required by a user of heavy equipment. The track 100 comprises an elastic body 126 on which a rolling layer of the main reinforced string 1 28 and a reinforced string layer are carried. The main reinforcing chord layer 1 28 is continuously formed on the crawler 100 in an endless direction, wherein the endless direction is parallel to the longitudinal axis 130 of the crawler 100. In the embodiment of the track 100 shown in the figure, the layer body 1 2 8 is disposed inside the rolling reinforcement layers 1 2 2 and 1 3 4 'so that the main string layer 1 28 is disposed at Layers 1 32 and 1 34 and the inner surface 116 of the track 1 00 6 The reinforcement layers 132 and 134 are composed of a plurality of single strings 丨 and the diameter of their strings is slightly smaller than that of the main string layer 128 The diameter of the chord I line. The chord lines of the reinforcement layers 1 3 2 and 1 3 4 are arranged at an angle equal to but opposite to the longitudinal material 130 of the main chord line layer j 128. The arrangement of the reinforcing layers 1 3 2 and 1 3 4 can offset the lateral force on the track i 〇 〇, so that the rotation of the track 100 around the roller will not have excessive friction. ii The side edges 152 of the layers 132 and 134 are quite unstable during the manufacturing process. This is because the small single strings of the layers 1 3 2 and 1 3 4 protrude from their elastic coverings, which results in Caused by sharp edges.

C: \ DATA \ DATA28 \ 54802.ptd Page 12 414769 V. Description of the Invention (8) | The track 100 also has a rolled inner lateral layer 136. The inner transverse layer 136 is arranged between the main chord line layer 128 and the inner surface 1 6 of the track 100. The layer body 136 is used to protect the main chord layer 128 from damage caused by the penetration of the inner surface 116 of the track 100. This penetration is usually caused when the crawler 100 is installed on a vehicle 'due to the contact of the crawler 100. The inner transverse layer 136 is composed of a plurality of chord lines arranged approximately perpendicular to the longitudinal axis 130 of the track 100. According to one of the main features of the present invention, the inner transverse layer 136 extends laterally across the entire lower surface 137 'of the main string layer 128 and surrounds each side edge 138 and 140 of the main string layer 128 and the reinforcement layer. The side edges 152 of 132 and 134 form a pair of wrapping portions 142 and 144. The inner i transverse layer 136 is then partially folded back onto the upper surface 154 of the strengthening layer 134 with partial extensions 146 and 148. The extensions 146 and 148 are arranged between the upper surface 154 of the strengthening layer 134 and the outer surface 122 of the track 100. In a preferred embodiment, the extensions 146 and 148 both extend outward from the side edge 152 for approximately four to six inches.丨 The inner transverse layer 136 and the wrapping portions 142 and 144 are separated from the main string layer 128 and the reinforcing layers 132 and 134 by the material of the elastic body 126. The extensions 146 and 148 extend only through the width above the portion of the main chord line layer 128, while leaving the central portion 150 on the upper surface 145 of the main chord line layer 128 not covered by the inner lateral layer 136. The wraps 142 and 144 and the extensions 146 and 148 are used to protect the side edges 1 38, 140, and 52 from being damaged. The wraps 1 42 and 144 and the extensions 146 and 148 can also provide the strength of the track 100 and Hardness. The wrapping sections 142 and 144 can also protect the edges of the crawler 100 from being exposed during processing during the manufacturing process.

C: \ DATA \ DATA28 \ 54802.ptd Page 13 414769 Five 'Description of the Invention (9) In the above, it is clear and easy to understand the conditions, and can be further added, the scope of this issue is not over Describes the improvement of the track, and the patent application attached to the structure and device obtained. Certain specific terms used are for brevity and understanding of the present invention; Restricted, as such terms are broadly interpreted for illustrative purposes only. The illustrated illustrations and descriptions are merely exemplary, so the invention is limited to the details of the illustrations or illustrations. The features, ideas and principles of the present invention, the construction and operation method for elastic unreasonable inner horizontal layers, the unique advantages of its structure, novelty and efficacy; novelty and efficacy, components, arrangements, parts and combinations thereof, Defined by the post-range.

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Claims (1)

414769 t 'patent application scope 1. An endless elastic track, comprising: an endless body having an inner surface and an outer surface, the endless main system has a longitudinal axis;-a chord line layer, which is formed by the endless The main chord line layer is parallel to the longitudinal axis; the main chord line layer has a pair of side edges, one facing the lower surface of the inner surface of the track, and one upper surface facing the outer surface of the track; a reinforced string The horizontal layer of the wire is arranged between the main chord line layer and the inner surface of the track; and the horizontal layer extends over the entire lower surface of the main chord line layer and includes a pair of wrapping portions, which are wrapped around The side edges of the main chord line layer. 2. The endless elastic track according to item 1 of the patent application scope, wherein the transverse layer is separated from the main chord line layer by the main body. 3. The endless elastic track according to item 1 of the scope of patent application, wherein the wrapping portion is separated from the main chord line layer by the main body. 4. The endless elastic track according to item 1 of the scope of patent application, further comprising a pair of reinforcing layers carried by the main body, which are arranged between the outer surface of the main body and the main chord line layer. 5. The endless elastic track according to item 4 of the scope of patent application *, wherein one of the pair of reinforcing layers includes a plurality of reinforcing chords, which are arranged at a first angle with respect to the longitudinal axis, and the pair of reinforcements Another layer of the layer includes a plurality of strengthened chords, which are arranged at a second angle relative to the longitudinal axis; the first angle is equal to the second angle, but its direction is opposite. 6. The endless elastic crawler according to item 1 of the patent application scope, wherein the horizontal C: \ DATA \ DATA28 \ 54802.PTD Page 15 414769 I 6. The scope of the patent application i The layer system includes a pair of extensions that extend back to the top of the main chord line. Table I. 0 I j 7. The endless elastic track according to item 6 of the patent application scope, wherein the extension and extension are arranged between the upper surface of the main chord line layer and the outer surface of the main body. 8. The endless elastic crawler according to item 6 of the scope of patent application, wherein the extension is only partially extended on the upper surface of the main chord layer. 9. The endless elastic track 'according to item 6 of the scope of patent application, wherein the extension is separated from the main chord line layer by the endless body. 10. An endless elastic track, comprising: | a main body having an inner surface and an outer surface, the main system having a vertical axis; 丨 I ί | a plurality of reinforcing member layers, which are carried by the main body I and I extend continuously parallel to the longitudinal axis;! I ί | The plurality of reinforcing member layers all have side edges; | I At least one of the plurality of reinforcing member layers is wrapped Live another | A reinforced building block. C: \ DATA \ DATA28 \ 54802.PTD Page 16