JPH0524631Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a crawler traveling device and is used in combines, harvesters, snowmobiles, etc.

(Prior Art) A pair of left and right elastic crawler tracks are stretched over a driving wheel and a driven wheel so as to be able to circulate freely, and horizontal reinforcing core bodies are embedded at intervals in the longitudinal direction of the belt. A crawler traveling device has a driving engagement hole between the bodies and has ground lugs arranged in a row at intervals in the longitudinal direction of the belt.
This has been proposed in Utility Model Application Publications No. 57-192877, Utility Model Application No. 59-64380, etc.

(Problem to be solved by the invention) However, in all of the conventional technologies, the center lines of the left and right core bodies (core metals) and the grounding lugs are aligned at the corresponding positions, and therefore vibrations occur. Suppression is controlled by the core pitch and lug pitch, and if the pitch is made small to reduce vibration, this results in soil clogging and poor soil removal.

The purpose of the present invention is to provide a crawler traveling device that has a large vibration suppressing effect while improving soil clogging and soil removal performance.

(Means for solving the problem) The present invention relates to a pair of left and right elastic crawlers 3 that are stretched around a driving wheel 4 and a driven wheel 5 so as to be able to rotate freely.
The reinforcing cores 9 are embedded at intervals P in the longitudinal direction of the strip, and the driving engagement holes 12 are provided between the cores 9. The ground lugs 15 are disposed at intervals P1 in the longitudinal direction of the strip.
In the crawler traveling device arranged in a row including P2, the above-mentioned object was achieved by taking the following technical measures.

That is, in the present invention, the center lines L of the horizontal reinforcing core bodies 9 in the pair of left and right elastic tracks 3 are aligned or substantially aligned, and the grounding lugs 15 on the core bodies 9 are displaced L1 in the belt longitudinal direction. It is a characteristic.

(Function) The crawler traveling device 2 according to the present invention is used as the traveling device 2 of the combine harvester 1 shown in FIG. It is circulated.

Circulation is achieved by the claws of the drive wheels 4 entering the engagement holes 12 and engaging with the horizontal reinforcing core body 9, traction force is applied by the grounding lugs 15, and the combine harvester 1 runs. .

During running, although the center lines L of the core bodies 9 of the pair of left and right elastic tracks 3 are coincident or substantially coincident, the grounding lugs 15 are displaced in the longitudinal direction of the belt as shown by the symbol L1. This reduces the vibration of the aircraft.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 8, there is shown an example in which a crawler traveling device 2 according to the present invention is used as a traveling device for a combine harvester 1. It is wound endlessly around roller wheels (wheel bodies) 7 arranged in a row.

Note that the vehicle may be a harvester, a transport vehicle, or the like other than a combine harvester.

Referring to FIGS. 1 to 5, reference numeral 8 denotes a band main body, which is made of rubber or other elastic material and is formed into an endless band shape.

Reference numeral 9 denotes a horizontal reinforcing core, which in this example has a flat wing-shaped seating portion 10 and a pair of left and right chevron-shaped protrusions 11, which are installed in rows at a predetermined interval P in the longitudinal direction of the band main body 8. The protrusion 11 is placed on the side opposite to the ground surface (inward)
is prominent.

Note that the core body 9 is made of cast metal, hard resin, etc.
The shape may be a flat plate formed into a gutter shape with both wings.

Reference numeral 12 denotes a driving engagement hole, which is formed to open in the band body 8 at the center in the band width direction between the core bodies 9;
In this example, it has a rectangular shape, and the pawls of the drive wheel 4 enter into engagement one after another and engage with the core body 9, thereby obtaining driving force.

Reference numeral 13 denotes a wheel rolling guide surface, which is formed in the longitudinal direction of a pair of left and right bands on the side opposite to the contact surface on both the left and right sides of the engagement hole 12. 7A is brought into contact and rolled, and the protrusion 11 has a function of preventing wheel slippage.

The band main body 8 has a thick wall in the center region of the band width, and thin walls on both left and right sides, and a pair of left and right extension prevention bodies 14 are provided on the ground side of the seating portion 10 of the core body 9.
are embedded in the longitudinal direction of the band (see Figure 2).

Reference numeral 15 denotes a grounding lug, which is integrally formed with the main body 8 and protrudes from the ground side of the main body 8.

The lug 15 has a trapezoidal cross section consisting of a pair of vertical surfaces 16 and 17 and a flat top surface 18, and its starting end 1
9 is located slightly outward or inward from the guide surface 13, the terminal end 20 extends beyond the opposite guide surface 13 to the side edge of the band body 8, and the direction of extension is reversed left and right (staggered). and is polymerized in the projection area of the core body 9.

The top surface 18 of the lug 15 has an edge 21 on the vertical side 16 on the starting end side 19 perpendicular to the longitudinal direction of the band, and an edge 21 on the vertical side 16 and 17 on the terminal side 20.
2 are perpendicular to the longitudinal direction of the band, and the starting end side 1
9 and the terminal end side 20, both edges 23 of the top surface 18 of the lug are formed into diagonal lug top surfaces 24 extending diagonally outward in the width direction,
The lug 15 including the diagonal lug top surface 24 forms an earth removal part 25 on both front and back sides of the engagement hole 12, which gradually expands outward in the width direction. They are arranged in a staggered pattern alternately in the width direction.

Here, the lugs 15 are stretched in a substantially straight line, but the top surfaces 18 of the lugs have a so-called "H" shape in a plan view, and the lugs 15 adjacent in the longitudinal direction of the band have a lag spacing smaller than the core spacing P. P1 and a large lug interval P2 on the projection area of the rolling guide surface 13,
They are arranged in a staggered manner so that the intervals P1 and P2 are alternate on the left and right.

Further, the top surface 18 of the lug 15 has a portion 26 that is located outside the core projection area in the band longitudinal direction in the projection area of the guide surface 13 on the starting end side 19, and
The previous portion 2 in the projection area of the guide surface 13 in
It has a portion 27 which is deviated in the band longitudinal direction from the core projection area in the opposite direction to 6, and both portions 26, 2
7 are connected by a diagonal lug top surface 24, and this diagonal lug top surface 24 is located in the core projection area.

Further, regarding the vertical surfaces 16 and 17 of the lug 15, the protruding vertical surface portion 16A on the starting end side 19 rises as a steep slope, and the opposite protruding vertical surface portion 17A rises as a gently curved gentle slope. terminal side 20
The protruding vertical surface portion 16B rises as a gently curved slope, and the opposite protruding vertical surface portion 17B rises as a steep slope. At P1, the lug elevations 16A and 17B are steeply inclined to each other, and at a large interval P2, the lug elevations 16B and 17A are gently inclined to each other.

FIG. 6 shows an example in which the engagement hole 12 is eccentrically formed on one side outward from the center line in the width direction of the band body 8, and the starting end 19 of the lug 15 is formed long in the band width direction, and is obliquely formed. The lug top surface 24 is shown as being formed at the intermediate portion in the longitudinal direction of the lug, and this lug pattern is advantageous in terms of track manufacturing.

FIG. 7 shows that the engagement hole 12 is aligned with the center line of the belt width of the belt body 8, and the starting end 19
This is a slightly longer version, and the rest is the same as the previous example.

In any of the embodiments shown in FIG. 1, FIG. 6, and FIG.
Even though their center lines L coincide or substantially coincide with each other, the lugs 15 are displaced in the longitudinal direction of the belt as shown by the symbol L1, thereby making it possible to further reduce the vibration of the machine body.

According to the embodiment of the present invention shown in FIGS.
2, the claw engages with the core body 9, causing the belt body 8 to rotate in the direction of arrow F in FIG.
When the soil is rotated in the opposite direction, it is rotated in the direction opposite to the arrow), a traction force is generated at the vertical surface 16 of the lug 15, and the soil is moved to the soil removal section 2.
The earth is removed in the direction of arrow C through lug 5, and the vibration is caused by lug 1.
5 has a smaller interval P1 than the interval P of the core body 9, vibration is suppressed, and since there are parts 26 and 27 that are outside the core body 9, the rigidity in this part is small, so vibration is suppressed. Resonance is suppressed.

Further, in the wrapping portion, the vertical portions 16 and 17 are opened at a large angle θ, as shown in FIG.

Furthermore, since the center lines of the core metal 9 of the left and right crawler tracks 3 are aligned or substantially aligned, the pawls of the drive wheels 4 engage the engagement holes 12 at the same time on both sides, and rotate in the direction of arrow F. During this rotation, the centers of the left and right grounding lugs 15 are displaced in the longitudinal direction of the belt as indicated by the symbol L1, so that the synchronized vibration is reduced.

Further, as shown in FIGS. 6 and 7, the diagonal lug portions 24 are arranged in a staggered manner on the left and right sides of the engagement hole 12, and the lengths of the linear portions on the top surface of the lugs are made approximately the same length. By making the lengths (dimensions) of the straight portions up to the center of the metal core as shown by symbols D and E in FIG. 6, the vibration is further reduced.

(Effects of the invention) The present invention is as described above. According to the present invention, the center lines L of the horizontal reinforcing core bodies 9 in the pair of left and right elastic crawlers 3 are coincident or substantially coincident, and the ground contact on the core bodies 9 is Since the lug 15 is displaced L1 in the longitudinal direction of the belt, circulation by the engagement of the drive wheel 4 with the engagement hole 12 of the crawler belt 3 is ensured in the same state for both the left and right crawler belts 3. However, since the lug 15 is displaced, there is an advantage in that tuned vibration can be suppressed to a minimum.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a plan (bottom) view of the main part of the first embodiment, FIG. 2 is a vertical cross-sectional view, and FIG. Figure 4 is the first
5 is an explanatory side view of the winding part, FIG. 6 is a plan view of the second embodiment, FIG. 7 is a plan view of the third embodiment, and FIG. The figure is a side view of an example used in a combine harvester. 2... Traveling device, 3... Elastic track, 4... Driving wheel, 5... Driven wheel, 9... Core body, 15... Grounding lug.

Claims (1)

[Scope of Claim for Utility Model Registration] A pair of left and right elastic tracks 3 which are hung over the driving wheel 4 and the driven wheel 5 so as to be able to circulate freely, are provided with a horizontal reinforcing core with an interval P in the longitudinal direction of the belt. In a crawler traveling device in which a body 9 is buried, a drive engagement hole 12 is provided between the core bodies 9, and ground lugs 15 are arranged in a row with intervals P1 and P2 in the longitudinal direction of the belt, a pair of left and right elastic tracks are provided. Horizontal reinforcing core body 9 in 3
The center lines L of the core body 9 are aligned or substantially aligned, and the core body 9
A crawler traveling device characterized in that the upper grounding lug 15 is displaced L1 in the longitudinal direction of the belt.