CN112441150A - Elastic crawler and core member - Google Patents
Elastic crawler and core member Download PDFInfo
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- CN112441150A CN112441150A CN202010705050.5A CN202010705050A CN112441150A CN 112441150 A CN112441150 A CN 112441150A CN 202010705050 A CN202010705050 A CN 202010705050A CN 112441150 A CN112441150 A CN 112441150A
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- crawler
- core member
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- track
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- 230000002265 prevention Effects 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000005452 bending Methods 0.000 abstract description 9
- 230000000052 comparative effect Effects 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000009194 climbing Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
- B62D55/18—Tracks
- B62D55/24—Tracks of continuously flexible type, e.g. rubber belts
- B62D55/253—Tracks of continuously flexible type, e.g. rubber belts having elements interconnected by one or more cables or like elements
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- Combustion & Propulsion (AREA)
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Abstract
The invention provides an elastic crawler belt which can inhibit the increase of the weight of a core part and can inhibit the wheel dropping caused by bending, twisting and the like. The elastic crawler (1) includes an endless-belt-shaped crawler body (2) made of an elastic body, and a core member (3) which is disposed at intervals in a crawler circumferential direction (X) in the crawler body (2) and is made of a material harder than the elastic body. The core member (3) includes a core member main body (3) extending in the track width direction (Y), and a plurality of wheel slip prevention projections (8) projecting from the 1 st end surface (S1) and the 2 nd end surface (S2) of the core member main body (3) in the track circumferential direction (X). At least 1 groove (9) extending in the circumferential direction (X) of the crawler is formed in each of the wheel-slip prevention protrusions (8).
Description
Technical Field
The present invention relates to an endless elastic crawler belt and a core member for an elastic crawler belt.
Background
Conventionally, there is known an elastic crawler belt in which a plurality of core members are embedded in a crawler belt body made of an elastic body such as rubber. The core member functions as a reinforcing member in the track width direction and is embedded at intervals in the track circumferential direction. The tensile member functions as a reinforcing member in the circumferential direction of the crawler, and is formed of a cord that passes through the core member on the outer circumferential side of the crawler and extends in the circumferential direction of the crawler. Such an elastic crawler belt sometimes causes a problem that the adjacent core members are displaced in the width direction of the crawler belt, and the core members are disengaged from the rollers of the vehicle body, thereby causing the rollers to be disengaged.
Patent document 1: japanese patent laid-open publication No. 2019-93878
However, when bending, twisting, or the like occurs between adjacent core members due to an external force acting when climbing or turning a projection, or the like, the 1 st projection and the 2 nd projection may be engaged or disengaged, and a disengaged wheel may be generated in which the elastic crawler is disengaged from a drive wheel, an idle wheel, a roller, or the like on the vehicle body side. As a countermeasure against the wheel slip caused by such bending or twisting, it is proposed to increase the size of the 1 st projection and the 2 nd projection, but this leads to an increase in the weight of the core member, and a further improvement is desired.
Disclosure of Invention
The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide an elastic crawler capable of suppressing the increase in weight of a core member and suppressing the wheel slip due to bending, twisting, or the like.
The present invention provides an elastic crawler belt, comprising: an endless belt-shaped crawler body made of an elastic body; and a core member that is disposed at intervals in the crawler circumferential direction in the crawler body and is made of a material harder than the elastic body, the core member including: a core member main body extending in a track width direction; and a plurality of wheel-slipping-off preventing protrusions protruding from the 1 st end surface and the 2 nd end surface of the crawler circumferential direction of the core member main body, wherein at least 1 groove portion extending in the crawler circumferential direction is formed in each of the wheel-slipping-off preventing protrusions.
In the elastic crawler according to the present invention, it is preferable that the run-off preventing projections include a pair of 1 st projections projecting from the 1 st end surface and a pair of 2 nd projections projecting from the 2 nd end surface and capable of entering between the pair of 1 st projections of the core member adjacent in the crawler circumferential direction, the 1 st projections are arranged such that a 1 st surface on an inner side in the crawler width direction faces a 2 nd surface on an outer side in the crawler width direction of the 2 nd projections of the core member adjacent in the crawler circumferential direction, and the groove portion includes a 1 st groove portion formed on the 1 st surface and a 2 nd groove portion formed on the 2 nd surface.
In the elastic crawler according to the present invention, it is preferable that when an external force such as twisting of a pair of the core members adjacent in the crawler circumferential direction acts on the crawler body, the 1 st groove engages with a portion of the 2 nd surface that is not the 2 nd groove, and the 2 nd groove engages with a portion of the 1 st surface that is not the 1 st groove.
In the elastic crawler according to the present invention, it is preferable that the elastic crawler further includes a tension member made of a cord, the tension member being disposed in the crawler body, passing through the core member on the outer circumferential side of the crawler and extending in the crawler circumferential direction, and a portion of the slip prevention protrusion on the outer circumferential side of the crawler is located on the outer circumferential side of the tension member.
The present invention provides a core member for use in an elastic crawler belt, the core member comprising: a core member main body extending in a track width direction; and a plurality of wheel-slipping-off preventing protrusions protruding from the 1 st end surface and the 2 nd end surface of the crawler circumferential direction of the core member main body, wherein at least 1 groove portion extending in the crawler circumferential direction is formed in each of the wheel-slipping-off preventing protrusions.
In the core member of the present invention, it is preferable that the slipping-off preventing projection includes: a pair of 1 st protrusions protruding from the 1 st end surface; and a pair of 2 nd protrusions protruding from the 2 nd end surface and capable of entering between the pair of 1 st protrusions when arranged side by side in a circumferential direction of the crawler, the groove portion including: a 1 st groove formed on the inner side of the 1 st projection in the track width direction; and a 2 nd groove portion formed on the outer side of the 2 nd projection in the track width direction.
In the core member of the present invention, the 1 st groove and the 2 nd groove preferably have the same cross-sectional shape.
In the core member of the present invention, it is preferable that 1 groove is formed in each of the wheel-slip preventing protrusions.
In the core member of the present invention, it is preferable that the groove portion is formed in a plurality in each of the wheel-slip preventing projections.
In the core member of the present invention, it is preferable that the outer end portion of the wheel-slip prevention projection on the outer circumferential side of the crawler belt is located on the outer circumferential side of the crawler belt with respect to the outer surface of the core member body on the outer circumferential side of the crawler belt.
In the elastic crawler of the present invention, at least 1 groove portion extending in the crawler circumferential direction is formed in each of the wheel-slip preventing protrusions. In such an elastic crawler, when a curve, a twist, or the like occurs between adjacent core members, the groove portions also engage with each other, and thus the disengagement of the wheel-disengagement preventing projections is less likely to occur. Therefore, the elastic crawler of the present invention can suppress an increase in weight of the core member and suppress the wheel slip.
In the core member of the present invention, at least 1 groove portion extending in the circumferential direction of the crawler is formed in each of the wheel-slipping prevention protrusions. In such core members, when a groove such as a bend or a twist is also formed between adjacent core members, the disengagement of the sheave disengagement preventing projections is less likely to occur. Therefore, the core member of the present invention can suppress an increase in weight and can suppress a runout.
Drawings
Fig. 1 is a perspective view showing an embodiment of an elastic crawler according to the present invention.
Fig. 2 is a perspective view of core members arranged side by side in the circumferential direction of the crawler.
Figure 3 is a front view of the core member.
Fig. 4 is a plan view of core members arranged side by side in the circumferential direction of the crawler.
Fig. 5 is a sectional view taken along line a-a of fig. 4.
Fig. 6 is a cross-sectional view when a twist is generated between the adjacent core members in fig. 5.
Fig. 7 is a sectional view of another embodiment of the wheel slip prevention protrusion.
Fig. 8 is a cross-sectional view when a twist is generated between the adjacent core members in fig. 7.
Description of reference numerals
An elastic track; a track body; a core component; a core member body; disengaging the wheel from the protrusion; a trench portion.
Detailed Description
Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.
Fig. 1 is a perspective view showing an elastic crawler 1 according to the present embodiment. As shown in fig. 1, the elastic crawler 1 of the present embodiment includes an endless-belt-shaped crawler body 2 made of an elastic body such as rubber, a plurality of core members 3 disposed in the crawler body 2, and a tensile member 4 disposed in the crawler body 2. The tensile member 4 is preferably formed of a cord that passes through the core member 3 on the outer circumferential side Zo of the track and extends in the track circumferential direction X.
In the present specification, the track circumferential direction X is a rotation direction of the elastic track 1, and corresponds to a direction indicated by reference numeral X in fig. 1. The track width direction Y is an axial direction of the drive wheel when the elastic crawler 1 is mounted on the vehicle, and corresponds to a direction indicated by reference numeral Y in fig. 1. The track thickness direction Z is a direction orthogonal to the track circumferential direction X and the track width direction Y, and corresponds to a direction indicated by reference numeral Z in fig. 1. The inner side of the endless belt-shaped elastic crawler 1 in the crawler thickness direction Z is the crawler inner circumferential side Zi, and the outer side is the crawler outer circumferential side Zo.
The crawler body 2 of the present embodiment has a substantially constant width and continuously extends in the crawler circumferential direction X. A plurality of projections 5 are provided on an outer surface 2o of the crawler main body 2 on the crawler outer circumferential side Zo, for example, at intervals in the crawler circumferential direction X. The lugs 5 extend in the track width direction Y and are suitable for improving traction when driving uneven ground.
On an inner surface 2i of the track inner circumferential side Zi of the track main body 2, for example, 2 rows of projection rows 6 are formed which are constituted by a plurality of projections 6a and extend in the track circumferential direction X. Between the 2 rows of projection rows 6, for example, a drive wheel, an idler wheel, a roller, etc. on the vehicle body side are guided. Further, the projection 6a is preferably reinforced by a guide projection 10 provided to the core member 3. Such a protrusion row 6 helps to suppress the wheel slip of the elastic crawler 1.
The core member 3 is suitably used for the elastic crawler 1 and functions as a reinforcing member in the crawler width direction Y. The core member 3 of the present embodiment is disposed at intervals in the crawler circumferential direction X in the crawler main body 2. Such a core member 3 can maintain the shape of the crawler body 2 and allow winding up to a driving wheel, an idler wheel, and the like on the vehicle body side.
The core member 3 is preferably made of a material harder than the elastomer constituting the crawler belt body 2. As the hard material of the core member 3, for example, a metal material such as steel or cast iron is suitably used. The core member 3 does not need to be disposed entirely within the crawler body 2, and a part thereof, for example, the guide projection 10 may be exposed from the crawler body 2.
Fig. 2 is a perspective view of the core members 3 arranged side by side in the crawler circumferential direction X. As shown in fig. 2, the core member 3 of the present embodiment includes a core member main body 7 extending in the track width direction Y, and a plurality of wheel slip prevention projections 8 projecting from the 1 st end surface S1 and the 2 nd end surface S2 of the core member main body 7 in the track circumferential direction X, respectively.
In the present embodiment, at least 1 groove 9 extending in the crawler circumferential direction X is formed in each of the wheel-slipping prevention protrusions 8. In such core members 3, even if bending, twisting, or the like occurs between adjacent core members 3, such that external forces in the track width direction Y and the track thickness direction Z act simultaneously, the groove portions 9 engage with each other, and thus the wheel slip prevention projections 8 are less likely to slip out. Therefore, the core member 3 of the present embodiment can suppress the weight increase and the wheel slip.
In the elastic crawler 1 in which the core members 3 are arranged side by side in the crawler circumferential direction X, the groove portions 9 are engaged even when the above-described bending, twisting, or the like occurs between the adjacent core members 3, and thus the disengagement of the wheel-disengagement preventing projections 8 is less likely to occur. Therefore, the elastic crawler 1 of the present embodiment can suppress the wheel slip while suppressing the increase in the weight of the core member 3.
Fig. 3 is a front view of the core member 3 as viewed in the crawler circumferential direction X, and fig. 4 is a plan view as viewed from the crawler inner circumferential side Zi of the core member 3 aligned side by side in the crawler circumferential direction X. As shown in fig. 3 and 4, the core member main body 7 preferably includes an engagement portion 7A disposed at the center in the track width direction Y and wing portions 7B disposed on both outer sides of the engagement portion 7A in the track width direction Y. The engaging portion 7A is formed to engage with a tooth groove portion of the drive wheel, for example.
The core member 3 preferably includes a pair of guide projections 10 projecting in the track thickness direction Z from an inner surface 7i of the track inner peripheral side Zi of the core member main body 7. The guide projections 10 stand on both sides of the engaging portion 7A in the track width direction Y, for example. Such guide protrusions 10 are adapted to sandwich drive wheels, idle wheels, rollers, etc. between the guide protrusions 10 for guiding.
The wheel slip prevention protrusion 8 of the present embodiment includes a pair of 1 st protrusions 8A protruding from the 1 st end surface S1 and a pair of 2 nd protrusions 8B protruding from the 2 nd end surface S2. The pair of first projections 8A and the pair of second projections 8B are disposed at intervals in the track width direction Y, for example. The pair of 2 nd projections 8B are preferably allowed to enter between the pair of 1 st projections 8A of the core member 3 adjacent in the track circumferential direction X.
The 1 st projection 8A of the present embodiment is disposed so that the 1 st surface 8A on the inner side in the track width direction Y faces the 2 nd surface 8B on the outer side in the track width direction Y of the 2 nd projection 8B of the core member 3 adjacent in the track circumferential direction X.
Even when an external force in the track width direction Y acts on the core members 3 adjacent to each other in the track circumferential direction X, the wheel-slip preventing projections 8 contact the 1 st surface 8a on one side and the 2 nd surface 8b on the other side, and thus lateral misalignment (misalignment in the track width direction Y) between the core members 3 can be suppressed. Therefore, the wheel-slipping prevention protrusion 8 of the present embodiment can suppress the wheel-slipping of the elastic crawler 1.
As shown in fig. 3, the outer end portion 8o of the track outer circumferential side Zo of the wheel drop-off prevention protrusion 8 of the present embodiment is located closer to the track outer circumferential side Zo than the outer surface 7o of the track outer circumferential side Zo of the core member body 7. In the present embodiment, the groove 9 is formed at a position including the outer surface 7o of the core member main body 7 in the crawler thickness direction Z. The outer end 8o of the wheel-slip prevention protrusion 8 is preferably located closer to the track outer circumferential side Zo than the tensile member 4. Such a slip-off preventing projection 8 reduces a moving range according to bending, twisting, or the like between the adjacent core members 3, and thus, the slip-off preventing projection 8 is less likely to occur.
As shown in fig. 3 and 4, the groove 9 preferably includes a 1 st groove 9A formed inside the 1 st projection 8A in the track width direction Y and a 2 nd groove 9B formed outside the 2 nd projection 8B in the track width direction Y. The groove 9 of the present embodiment includes a 1 st groove 9A formed on the 1 st surface 8a and a 2 nd groove 9B formed on the 2 nd surface 8B.
Fig. 5 is a sectional view taken along line a-a of fig. 4. As shown in fig. 5, the sectional shapes of the 1 st groove 9A and the 2 nd groove 9B in the present embodiment are the same. That is, the length L1 in the track thickness direction Z of the groove bottom of the 1 st groove 9A is equal to the length L2 in the track thickness direction Z of the groove bottom of the 2 nd groove 9B. Further, the length L3 in the track thickness direction Z of the portion 8c of the 1 st surface 8a other than the 1 st groove 9A is equal to the length L4 in the track thickness direction Z of the portion 8d of the 2 nd surface 8B other than the 2 nd groove 9B. Such a groove 9 provides a good balance when engaged, and contributes to suppressing an increase in the weight of the core member 3.
The groove depth d1 of the 1 st groove 9A is preferably 5% to 25% of the width w1 of the 1 st projection 8A. If the groove depth d1 of the 1 st groove 9A is less than 5% of the width w1 of the 1 st projection 8A, the groove 9 may not engage with each other when bending, twisting, or the like occurs between adjacent core members 3. If the groove depth d1 of the 1 st groove 9A is larger than 25% of the width w1 of the 1 st projection 8A, the durability of the 1 st projection 8A may be reduced.
The groove depth d2 of the 2 nd groove 9B is preferably 5% to 25% of the width w2 of the 2 nd projection 8B. If the groove depth d2 of the 2 nd groove 9B is less than 5% of the width w2 of the 2 nd projection 8B, the groove 9 may not be engaged when bending, twisting, or the like occurs between adjacent core members 3. If the groove depth d2 of the 2 nd groove 9B is larger than 25% of the width w2 of the 2 nd projection 8B, the durability of the 2 nd projection 8B may be reduced.
The groove depth d1 of the 1 st groove 9A is equal to the groove depth d2 of the 2 nd groove 9B in the present embodiment. In addition, the width w1 of the 1 st projection 8A is equal to the width w2 of the 2 nd projection 8B. Such a slip-off prevention protrusion 8 and groove 9 have good balance when engaged with each other, and contribute to suppressing an increase in weight of the core member 3.
Fig. 6 is a sectional view when torsion is generated between the adjoining core members 3 in fig. 5. As shown in fig. 1 to 6, when an external force such as torsion acts between the core members 3 adjacent in the track circumferential direction X, that is, when external forces in the track width direction Y and the track thickness direction Z act simultaneously, the 1 st groove 9A engages with the portion 8d of the 2 nd surface 8B that is not the 2 nd groove 9B. Similarly, at this time, the 2 nd groove 9B engages with the portion 8c of the 1 st surface 8a which is not the 1 st groove 9A.
In the groove 9 of the present embodiment, 1 groove is formed in each of the run-off preventing projections 8. At this time, the length L1 of the 1 st groove 9A is preferably greater than the length L3 of the portion 8c which is not the 1 st groove 9A. Similarly, the length L2 of the 2 nd groove 9B is preferably greater than the length L4 of the portion 8d that is not the 2 nd groove 9B. Such a groove 9 is easily engaged when twisting occurs between adjacent core members 3.
Fig. 7 is a sectional view of the escape wheel preventing projection 18 of the other embodiment, and fig. 8 is a sectional view when a twist is generated between the adjacent core members 3 in fig. 7. The embodiment is the same as the above embodiment except for the wheel-slip preventing projection 18, and the description thereof will be omitted. Fig. 7 is a sectional view corresponding to fig. 5, and fig. 8 is a sectional view corresponding to fig. 6.
As shown in fig. 7 and 8, the runout preventing projection 18 of this embodiment includes a pair of 1 st projections 18A projecting from the 1 st end surface S1 (shown in fig. 2) of the core member 3 and a pair of 2 nd projections 18B projecting from the 2 nd end surface S2 (shown in fig. 2) of the core member 3, similarly to the runout preventing projection 8 of the above-described embodiment.
Like the wheel-slipping-off preventing projections 8 of the above-described embodiment, the wheel-slipping-off preventing projections 18 of this embodiment are each formed with a groove 19 extending in the crawler circumferential direction X. The groove portions 19 are formed in a plurality of pieces, 4 pieces in this embodiment, in each of the wheel-slip preventing projections 18.
In this embodiment, when an external force such as torsion acts between the core members 3 adjacent in the crawler circumferential direction X, the 1 st groove 19A engages with the portion 18d of the facing 2 nd surface 18B other than the 2 nd groove 19B. Similarly, at this time, the 2 nd groove 19B engages with the portion 18c of the 1 st surface 18a which is not the 1 st groove 19A.
Since the groove 19 of this embodiment is formed with 4, the 1 st projection 18A and the 2 nd projection 18B are engaged with each other with a smaller deviation in the crawler thickness direction Z than the above-described wheel slip prevention projection 8. Therefore, even when twisting occurs between the adjacent core members 3, the displacement in the track thickness direction Z of the 1 st projection 18A and the 2 nd projection 18B can be suppressed, and the durability of the elastic track 1 can be improved. In addition, when the 1 st projection 18A and the 2 nd projection 18B are largely displaced by a large external force, the groove 19 is partially engaged with the groove 19, and thus the disengagement of the wheel-disengagement preventing projections 18 is hardly generated. Therefore, the wheel slip prevention protrusion 18 of this embodiment can more reliably suppress wheel slip.
While the above description has been made of the particularly preferred embodiment of the present invention, the present invention is not limited to the above-described embodiment, and can be modified into various embodiments and implemented.
[ examples ] A method for producing a compound
An elastic crawler having the configuration shown in fig. 1 was produced in a trial manner based on the specifications of table 1. Each of the trial crawler belts was attached to a running device of a small construction machine, and the resistance to wheel slipping was evaluated when running tests including climbing up and turning to a projection were performed. The cross-sectional shape and cross-sectional size of the wheel drop preventing protrusion were the same except for the groove in the comparative example and the example. Thus, the weight of the core member of the example was smaller than that of the core member of the comparative example.
< resistance to knocking off >
In the running test, the number of times the elastic crawler was separated from the roller to cause the wheel slip was measured. The results are shown in 5-degree scale, and the larger the numerical value, the smaller the number of times of slip occurrence and the more excellent the slip resistance.
The results of the evaluation are shown in table 1.
[ TABLE 1 ]
| Comparative example 1 | Example 1 | Example 2 | Example 3 | Example 4 | |
| Number of |
0 | 1 | 1 | 4 | 4 |
| Depth of |
0 | 10 | 20 | 10 | 20 |
| Resistance to slipping off a |
2 | 3 | 4 | 4 | 5 |
As a result of the evaluation, it was confirmed that: the elastic crawler belt of the example is superior to the comparative example in the wheel slipping resistance, and can suppress the wheel slipping while suppressing the increase in the weight of the core member.
Claims (10)
1. An elastic crawler belt, which is characterized in that,
comprises the following steps:
an endless belt-shaped crawler body made of an elastic body; and
a core member that is disposed at intervals in a crawler circumferential direction in the crawler body and is made of a material harder than the elastic body,
the core member includes: a core member main body extending in a track width direction; and a plurality of run-off prevention protrusions protruding from the 1 st end surface and the 2 nd end surface in the circumferential direction of the crawler of the core member main body, respectively,
at least 1 groove part extending along the circumferential direction of the crawler is formed on each of the wheel drop preventing protrusions.
2. The elastomeric track of claim 1,
the wheel-slipping prevention protrusions include a pair of 1 st protrusions protruding from the 1 st end surface, and a pair of 2 nd protrusions protruding from the 2 nd end surface and capable of entering between a pair of the 1 st protrusions of the core member adjacent in a circumferential direction of the crawler,
the 1 st projection is disposed so that a 1 st surface on an inner side in a track width direction faces a 2 nd surface on an outer side in the track width direction of the 2 nd projection of the core member adjacent in a track circumferential direction,
the groove includes a 1 st groove formed on the 1 st surface and a 2 nd groove formed on the 2 nd surface.
3. The elastomeric track of claim 2,
when an external force such as torsion is applied to the crawler body by a pair of the core members adjacent in the crawler circumferential direction,
the 1 st groove is engaged with a portion of the 2 nd surface opposite to the 2 nd groove,
the 2 nd groove engages with a portion of the 1 st surface that is not the 1 st groove.
4. An elastomeric track according to any one of claims 1 to 3,
further comprising a tensile member composed of a cord, the tensile member being disposed in the crawler body, passing through the crawler body at a position on the outer circumferential side of the core member and extending in the crawler circumferential direction,
the portion of the wheel-slip prevention protrusion on the outer circumferential side of the crawler belt is located on the outer circumferential side of the crawler belt with respect to the tensile member.
5. A core member for use with an elastic crawler, the core member characterized in that,
comprises the following steps:
a core member main body extending in a track width direction; and
a plurality of wheel slip prevention protrusions protruding from the 1 st end surface and the 2 nd end surface of the core member main body in the circumferential direction of the crawler belt,
at least 1 groove part extending along the circumferential direction of the crawler is formed on each of the wheel drop preventing protrusions.
6. The core member as recited in claim 5,
the wheel drop prevention protrusion includes: a pair of 1 st protrusions, the pair of 1 st protrusions protruding from the 1 st end surface; and a pair of 2 nd protrusions protruding from the 2 nd end surface and capable of entering between the pair of 1 st protrusions when arranged side by side in a crawler circumferential direction,
the groove portion includes: a 1 st groove portion formed on an inner side of the 1 st projection in a track width direction; and a 2 nd groove portion, the 2 nd groove portion being formed on an outer side of the 2 nd projection in the track width direction.
7. The core member as recited in claim 6,
the 1 st groove and the 2 nd groove have the same cross-sectional shape.
8. The core member as recited in any one of claims 5 to 7,
the groove portion is formed with 1 piece of each of the run-off preventing protrusions.
9. The core member as recited in any one of claims 5 to 7,
the groove portion is formed with a plurality of grooves in each of the wheel-slip preventing protrusions.
10. The core member as recited in any one of claims 5 to 9,
the outer end portion of the track outer circumferential side of the wheel drop-off prevention protrusion is located closer to the track outer circumferential side than the outer surface of the track outer circumferential side of the core member body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019160672A JP7367403B2 (en) | 2019-09-03 | 2019-09-03 | Elastic crawler and core material |
| JP2019-160672 | 2019-09-03 |
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| Publication Number | Publication Date |
|---|---|
| CN112441150A true CN112441150A (en) | 2021-03-05 |
| CN112441150B CN112441150B (en) | 2024-04-12 |
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| CN202010705050.5A Active CN112441150B (en) | 2019-09-03 | 2020-07-21 | Elastic crawler belt and core member |
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| US5522655A (en) * | 1992-04-30 | 1996-06-04 | Fukuyama Gomu Kogyo Kabushiki Gaisha | Rubber crawler |
| JPH08225088A (en) * | 1995-11-28 | 1996-09-03 | Bridgestone Corp | Rubber crawler prevented from running off wheel |
| JP2001010554A (en) * | 1999-04-28 | 2001-01-16 | Ohtsu Tire & Rubber Co Ltd :The | Elastic crawler |
| CN1812910A (en) * | 2003-07-02 | 2006-08-02 | 福山橡胶工业株式会社 | Rubber track and method of producing core metal for rubber track |
| CN101687524A (en) * | 2007-06-06 | 2010-03-31 | 福山橡胶工业株式会社 | Core for rubber track and rubber track |
| JP2010202070A (en) * | 2009-03-04 | 2010-09-16 | Bridgestone Corp | Core metal for rubber crawler |
| CN208698919U (en) * | 2018-09-14 | 2019-04-05 | 元创科技股份有限公司 | Anticreep rubber belt track core gold and anticreep rubber belt track |
| CN110027640A (en) * | 2019-05-29 | 2019-07-19 | 北京北方车辆集团有限公司 | A kind of rubberbelt type caterpillar core gold structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2021037849A (en) | 2021-03-11 |
| JP7367403B2 (en) | 2023-10-24 |
| CN112441150B (en) | 2024-04-12 |
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