JPH08227Y2 - Elastic crawler - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endless belt type elastic crawler made of an elastic material such as rubber.

[0002]

2. Description of the Related Art Conventionally, elastic crawlers used as traveling devices in agricultural machines, construction machines, snow vehicles, etc. are known as shown in FIGS.
(See Japanese Patent No. 194). The crawler 11 has a plurality of tensile members in the width direction formed in an endless belt-shaped crawler main body 14 made of an elastic material such as rubber in which a cored bar 12 is embedded at predetermined intervals in the circumferential direction and a lug 13 is projected on the ground side. The body 15 and the short fiber mixed elastic body 16 are embedded in the circumferential direction, wound around a drive wheel 17 and a driven wheel (not shown), and rotated by the drive wheel 17 to run.

[0003]

By the way, in the above-mentioned conventional example, the core bar length (length in the width direction of the crawler body) is long in order to increase the rigidity, traction force and buoyancy of the crawler, and the weight is This is one of the factors that prevent large and lightweight products. The present invention has been made in view of the above situation, and an object of the present invention is to shorten the core bar length and reduce the weight without reducing the rigidity, traction force, buoyancy, etc. of the crawler. It is to provide an elastic crawler capable of.

[0004]

In order to achieve the above object, the present invention takes the following technical means. That is, the present invention is, on the outer peripheral grounding side projecting from the lugs in the circumferential direction at predetermined intervals endless elastic material-made crawler body, the core metal is embedded at predetermined intervals in the circumferential direction, the tensile member in the width direction plural rows on the ground side of the core metal is embedded in the circumferential direction, the circumferential direction
Drive wheel engaging holes are formed between the facing cores and between the tensile members in the width direction.
Located inside the crawler body on the grounding side of the tensile body
A reinforcing material whose length in the direction is longer than the cored bar is embedded.
Elastic crawler , wherein the reinforcing material is in the circumferential direction of the main body.
The entire width in the circumferential direction is overlapped with the core metal and the lug.
Both sides of the body in the width direction protrude outward from both ends of the cored bar.
It is characterized by being extended to almost the outer end of the lug .

Further , the present invention is located on the outside ground contact side in the circumferential direction.
A pair of lugs in the width direction that are arranged at regular intervals in a zigzag pattern
Inside the crawler main body made of elastic material, the core metal is placed in the circumferential direction.
It is embedded at a fixed interval and is placed on the ground side of the core bar.
Within the range between both ends of the core metal, multiple tensile members in the widthwise direction
Is installed in the direction between the cores in the circumferential direction and between the tensile members in the width direction.
The driving wheel engagement hole is formed, and the tensile body is grounded inside the crawler body.
Located on the side and the length of the main body in the width direction is longer than the core metal.
An elastic crawler in which a strong material is embedded , the reinforcement being
The material is circumferentially opposite to each other from the center in the width direction of the body.
It is displaced toward the center, and the central part is circumferential in the circumferential direction of the main body.
The entire width is overlapped with the core metal, and both sides are
Entire circumferential width overlaps lug 6 in the circumferential direction of the body
And is projected outward from both ends of the core metal 3 so that it is substantially outside the lug.
It is characterized by being extended to the edge.

Further, according to the present invention, the circumferential width of the reinforcing member is
Make sure that it is set to approximately half or less of the width of the core metal and lug.
It has a feature.

[0007]

According to the present invention , the crawler when the drive wheel is wound
After securing the curved deformation ease of body, the shorter amount by shortening the length of the metal core can be covered by long reinforcement than the core metal, the body width direction side portions of the reinforcing member to the outer end of the lug Correspondence
By extending to the position to prevent the crawler body, especially the lug body width direction both ends of the body is prevented from splashing and deformation,
Rigidity of the crawler, the traction and buoyancy, can be increased than in the case of long metal core, and weight reduction is FIG.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of the present invention, in which an elastic crawler 1 is an endless belt-shaped crawler body 2 made of an elastic material such as rubber and a circumferential direction (longitudinal direction) in the crawler body 2.
A large number of core bars 3 embedded at predetermined intervals, a tensile body 4 composed of a plurality of width-direction steel cords embedded in the ground side (outer peripheral side) of the core bars 3 in the circumferential direction, and The reinforcing member 5 is embedded on the grounding side of the upholstery body 4 at predetermined intervals in the circumferential direction so as to correspond to the core metal 3.

The crawler body 2 has a lug 6 on the ground side.
Are arranged in correspondence with the core metal 3 and the reinforcing material 5, and a large number of engaging holes 7 are formed at equal intervals in which the teeth of the drive wheel (sprocket shape) are fitted and engaged in the widthwise center between the core metals 3. Has been drilled. This
The engaging holes 7 of the are located between the cores in the circumferential direction and between the tensile members in the width direction.
are doing. The core metal 3 has a pair of left and right guide protrusions 8 for preventing the wheel from slipping off or passing through the rolling wheels, which project to the side opposite to the ground (inner side).
Are provided on both sides of the engagement hole 7 in the width direction, and the driving force of the drive wheel is transmitted to the crawler body 2 via the core metal 3. Further, the length of the core metal 3 in the width direction of the main body is significantly shorter than that of the conventional one.

[0010] The tension member 4 is disposed under the wings 3A of the core 3 across the engaging holes 7 to the right and left distribution shape in the width direction, the core metal 3
Is located within the range between both ends of the
Both ends (not shown) are stacked on top of each other and joined together. If necessary, the overlapping parts are enveloped by a canvas to prevent peeling from the crawler body 2 and to prevent turtle row formation on the crawler body 2. And the life of the crawler is greatly extended.

The reinforcing member 5 is made of a rigid material such as metal, a lightweight member such as engineering plastic, or an elastic material such as spring steel, and is formed in a rod shape (or a plate shape). It is much smaller than the area, that is, it is thinner, and its length is significantly longer than the length of the cored bar 3, and the reinforcing material 5 compensates for the decrease in rigidity due to the shortened cored bar wing 3A. ing.

That is, as is clear from FIGS.
The material 5 has a full width in the circumferential direction in the circumferential direction of the main body and the core metal 3 and
6 and overlaps with both sides of the body in the width direction.
A substantially outer end across from protruding outwardly and the lugs of the core metal 3 or
The width in the circumferential direction is the same as the width of the core metal 3 and the lug 6.
It is set to about half or less. The rigidity of the crawler 1 can be easily and selectively changed by changing the material and size of the reinforcing material 5 and the number of the reinforcing bars 5 per core metal 3. For example, when the reinforcing material 5 is made of a rigid body, the rigidity, traction force, buoyancy, etc. of the crawler 1 can be improved, and the same effect as when the core metal 3 is lengthened as in the conventional example is expected. it can. Further, when the reinforcing member 5 is made of a lightweight member, the weight can be significantly reduced.

Further, when the reinforcing member 5 is made of an elastic body such as spring steel, both widthwise end portions of the crawler body 2, that is, the portion without the core metal blade portion 3A is positively elastically deformed (see arrow (a in FIG. 1)). ), The soil separation between rugs 6 can be improved. When the number of tensile members 4 is small, the core metal blade portion 3A is shortened and the reinforcing member 5 is lengthened, whereby the weight can be reduced without lowering the rigidity.

FIG. 4 shows a second embodiment of the present invention. The difference from the first embodiment is that the lugs 6 are arranged in a staggered manner and the reinforcing material 5 corresponds to the core metal 3 and the lug 6. Ru der that they are mutually bent offset to the opposite side in a circumferential direction just below the core metal wings 3A as. That is, as is clear from FIG.
The reinforcing member 5 is arranged such that both sides are
It is offset in the opposite direction of the circumferential direction, and the center part is in the circumferential direction of the main body.
The entire width in the circumferential direction overlaps with the core metal 3,
The both sides of the lug 6 have the entire circumferential width in the circumferential direction of the main body.
Overlapping and protruding outward from both ends of core metal 3
The lug extends almost to the outer edge.

The second embodiment has the same effects as the first embodiment. Therefore, the same reference numerals as those in FIG. 3 are given and detailed description thereof is omitted. The present invention is not limited to the above-described embodiment, and for example, the shape of the lug 6 of the crawler body 2 or the lug pattern of the crawler main body 2 as well as the reinforcing material 5 and the core metal 3 can be arbitrarily changed. Each core metal 3 can be provided with a plurality of threads, and a metal crawler can be replaced.

[0016]

[Effects of the Invention] As described above, the present invention has
Endless elasticity with lugs projecting at specified intervals in the circumferential direction
Inside the crawler body made of material, the cored bar has a predetermined interval in the circumferential direction.
Is embedded in the core metal, and a plurality of widthwise strips are provided on the grounding side of the core metal.
The tensile body of is embedded in the circumferential direction, and between
Drive wheel engagement holes are formed between the tension members
Located on the grounding side of the tensile body, the length in the width direction of the main body is
An elastic crawler with a reinforcing material embedded that is longer than gold.
Therefore , the reinforcing material has a core in the entire circumferential direction in the circumferential direction of the main body.
It overlaps with gold and lugs, and its body width direction
Both sides are projected outward from both ends of the core metal and are almost outside the lug.
Is it characterized by being extended to the edge?
Of the crawler core metal and lugs over the entire width.
Strength, traction, buoyancy, etc. can be supplemented by reinforcing materials.
The core metal is shortened by that amount to make it smaller and lighter.
Can be installed, and even if reinforcement is provided, it does not
Since it is in a position that corresponds to the
It can be easily bent when riding, and smooth running can be maintained.

Further , a predetermined space is provided in the circumferential direction on the outer peripheral ground side.
Endless elasticity with a pair of zigzag lugs protruding in the width direction
Inside the crawler body made of material, the cored bar has a predetermined interval in the circumferential direction.
It is embedded in the grounding side of the cored bar and both
A plurality of tensile members in the width direction are embedded in the circumferential direction within the range between the ends.
Drive wheel engagement holes between the cores in the circumferential direction and between the tensile members in the width direction.
Located on the ground side of the tensile body inside the crawler body
A reinforcing material whose length in the width direction of the main body is longer than that of the cored bar is embedded.
Elastic crawler, wherein the reinforcing member is the width of the main body.
Both sides are offset from each other in the direction opposite to the circumferential direction
The center part is the entire width in the circumferential direction in the circumferential direction of the main body.
It overlaps with gold, and both sides are in the circumferential direction of the body.
At full width in the circumferential direction at the lug 6 and the core
Projected outward from both ends of gold 3 and extended to approximately the outer edge of the lug
Because it is characterized by being
Position of crawler core and lugs even if arranged in a bird
Compensation for rigidity, traction, buoyancy, etc. over almost the entire width with
Can be co increased, minute this happens, shorten the length of the core
Can be made smaller and lighter, and the core metal can be made straight.
Even if formed, the load is applied to the staggered lugs through the reinforcing material.
Can be added.

Further, the circumferential width of the reinforcing material is determined by the core metal and the lath.
It is characterized in that it is set to approximately half or less of the width of the
Since it is a thing, a reinforcement material without adding too much weight
Can be provided.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

3 is a bottom view seen from the ground contact surface side of FIG. 1. FIG.

FIG. 4 is a bottom view of the second embodiment of the present invention viewed from the ground plane side.

FIG. 5 is an explanatory diagram showing a state where an elastic crawler is wrapped around a drive wheel.

FIG. 6 is a sectional view showing a conventional example.

7 is a cross-sectional view taken along the line BB of FIG.

[Explanation of symbols]

 1 Elastic Crawler 2 Crawler Main Body 3 Core Bar 4 Tensile Body 5 Reinforcement Material 6 Lug

Claims (3)

[Scope of utility model registration request] To claim 1 outer circumferential ground endless projecting from the lugs in the circumferential direction at predetermined intervals in the side of the elastic material-made crawler body,
The cored bar is embedded at a predetermined interval in the circumferential direction, and a plurality of width direction tensile members are embedded in the circumferential direction on the ground side of the cored bar, between the circumferential direction cored bars and between the width direction tensile members. Drive wheel engagement hole
Located on the ground side of the tensile body inside the crawler body
A reinforcing material whose length in the width direction of the main body is longer than that of the cored bar is embedded.
In the elastic crawler, the reinforcing member has a full width in the circumferential direction in the circumferential direction of the main body.
It overlaps with the lug, and both sides of the body width direction
Is projected outwards from both ends of the core bar and extends to the outer ends of the lug
An elastic crawler characterized by being extended . Wherein at predetermined intervals on the outer peripheral grounding side in the circumferential direction
An endless elastic material with a pair of lugs protruding in a width direction in a staggered manner
A cored bar is embedded in the crawler body at a predetermined interval in the circumferential direction, and the cored bar is on the ground side and between both ends of the cored bar.
Within the range of the width direction multiple tensile body is embedded in the circumferential direction ,
Drive wheel engagement holes are formed between the circumferential cores and between the tensile members in the width direction.
Is located inside the crawler body and located on the ground side of the tensile body.
A reinforcing material whose length in the body width direction is longer than the core metal is embedded.
An elastic crawler , wherein the reinforcing member has a center portion in the width direction of the main body, and both side portions surround each other.
It is offset in the opposite direction, and the center part is in the circumferential direction of the main unit.
The entire width in the circumferential direction is overlapped with the core metal.
Both sides have a circumferential width of lugs 6 and o in the circumferential direction of the main body.
It is wrapped around and protrudes from both ends of the core metal 3
An elastic crawler that is extended to approximately the outer end of the lug . 3. The circumferential width of the reinforcing member is the same as that of the core metal and the lug.
The elastic crawler according to claim 1 or 2, wherein the width is set to be approximately half or less of the width .