JP2517502Y2 - Agricultural wheels - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an agricultural wheel mainly used for a field working agricultural work machine such as a seeder, a fertilizer applicator, and a ridger.

(Prior Art) When an agricultural tire with pneumatic lugs is used as an agricultural wheel used in a field-operated agricultural work machine, there are problems that the number of parts is large, manufacturing and assembling are complicated, and air pressure management is troublesome. .

On the other hand, when the rubber-baked wheel disclosed in Japanese Utility Model Laid-Open No. 55-85905 is used for the field action, compared to a wetland, when driving on a field, the wheel does not dig into the ground and a sufficient traction force cannot be secured. When the rubber-baked wheel disclosed in Japanese Laid-Open Patent Publication No. 52-123121 is used for the field action, there is a problem that the propulsion lug is a metal plate, and thus it is easily broken, and therefore, JP-A-59-7790.
When the propulsion lug is formed by elastic blades as disclosed in Japanese Patent No. 2, there is a problem that the traction force by the blades cannot be expected to a great extent in the field.

Therefore, as disclosed in Japanese Utility Model Laid-Open No. 59-56102, a thin plate annular core metal is fixed to a core metal supporting member, and inner and outer peripheral surfaces and left and right side surfaces of the core metal are fixed and surrounded by a rubber member, In an agricultural wheel in which a large number of lugs are set on the outer circumference of the tread portion of the quality member, the rubber member containing the core metal has a plate ring shape with a wall thickness smaller than the width, and the lug is substantially at the center in the width direction of the tread portion. There is an agricultural wheel having a large number of circumferentially long portions formed at equal intervals in the circumferential direction and a lateral long portion extending outward from each circumferential portion, and this agricultural wheel can be used as a field action.

(Problems to be solved by the invention) The agricultural wheel (rubber-baked wheel) disclosed in Japanese Utility Model Laid-Open No. 59-56102 can be used as a field, but since the tread portion has a flat plate shape, it does not reach the ground. It is difficult to get in, and for this reason the traction force must rely exclusively on the lug, and if the height of the lug is increased, the wheel outer shape becomes extremely large and there is a problem that it can not be practically mounted on this machine (work machine). There was a problem in that it could not exert sufficient traction force to be mounted on the machine, and that it was straight ahead and vibration absorption.

Therefore, the present invention relates to a rubber-baked agricultural wheel, in which the lugs made of a rubber-like material have different heights from each other.
To provide an agricultural wheel suitable for field action, which is excellent in straightness and vibration absorption by forming a tread with a sloping tread and forming a tread on an inclined tread, and which can be expected to have a large traction force by sufficiently digging into the ground. Is the purpose.

(Means for Solving the Problems) In the present invention, an annular elastic ring 4 is formed by surrounding and fixing an entire circumference of an annular rim 3 with a rubber material, and a rubber material is provided on the outer periphery of the elastic ring 4. In order to achieve the above-mentioned object in an agricultural wheel in which a large number of lugs 5 made of a material are integrally formed,
The following technical measures are taken.

That is, the lug 5 is located at the center of the elastic ring body 4 in the width direction and has a trapezoidal cross section that extends in the circumferential direction.
And a second lug 7 having a trapezoidal peripheral portion 7A which is adjacent to the first lug 6 in the circumferential direction and which extends in the circumferential direction, and a side elongated portion 7B which extends outward from the peripheral portion 7A. The lug height of the second lug 7 is set to be higher than the lug height of the first lug 6, and the concave portion 8 is provided at the top of the first lug 6 between the peripheral portions 7A of the second lug 7. Formed, and further, the peripheral portion of the first lug 6 and the second lug 7.
It is characterized in that it is inclined inward in the radial direction through the foot of 7A to form left and right inclined tread portions 4A, 4B.

(Operation) When the agricultural wheel B according to the present invention is mounted on a field working machine and travels, the first lug 6 and the second lug 7 have left and right inclined tread portions.
Sufficiently pull into the ground and secure a large traction force until 4A and 4B enter.

Since the left and right tread portions 4A and 4B are inclined inward in the radial direction, the lateral long portion 7B of the second lug 7 can secure a sufficient lug height and exert a large traction force, and thus can be connected to the first lug 6. Second
The straightness can be secured by the peripheral portion 7A of the lug 7,
The lateral movement of the machine can be reliably prevented by the treads of the inclined treads 4A and 4B.

Further, when the hard disk or the paved road is advanced, since the concave portion 8 is formed between the peripheral portions 7A of the second lug 7, elastic deformation of the peripheral portion 7A is secured and vibration absorption is exhibited.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 2 showing the entire configuration of the agricultural wheel B and FIG. 4 showing the cross section taken along the line AA in FIG. 1, a plurality of spokes 2 are radially arranged on the boss 1 for mounting the axle. A ring-shaped rim 3 shown as a pipe member is fixedly attached via the spokes 2.

The entire circumference of the rim 3 is surrounded and fixed by a rubber material to prevent rust and the like to form a ring-shaped elastic ring body 4. On the outer periphery of the elastic ring body 4, a large number of lugs made of a rubber material are formed. 5 are integrally formed.

As shown in FIG. 1 and FIG. 5, the lug 5 is a first lug 6 having a trapezoidal cross section that is located in the center of the elastic ring body 4 in the width direction and extends in the circumferential direction. 6, which is adjacent to 6 in the circumferential direction and extends in the circumferential direction, having a trapezoidal cross section
7A and a second lug 7 having a side portion 7B having a trapezoidal cross section that extends outward from the peripheral portion 7A, and the lug height of the second lug 7 relative to the lug height of the first lug 6 Is set to be high, and a recess 8 is formed between the peripheral portions 7A of the second lug 7 (see FIG. 3).

Further, the circumferential length portion of the first lug 6 and the second lug 7
Left and right tread portions 4A and 4B that are inclined in the radial direction via the skirt of 7A are formed on the outer peripheral surface (tread portion) of the elastic body 4.

The inner peripheral surface of the elastic ring body 4 has left and right inclined surfaces 4C and 4D that are inclined radially outward from a radial line S passing through the center position in the width direction. Here, the virtual cross-sectional shape of the elastic ring body 4 is It has a flat rhombus shape and the cross-sectional width W is larger than the cross-sectional height H.

The agricultural wheel B is mounted on the axle of the boss 1 to support the machine and rolls. When traveling on hard soil, paved roads, etc., that is, on a reciprocating path to a field, Two
Since the concave portion 8 is formed between the peripheral portions 7A of the lug 7, the peripheral portion 7A can be sufficiently elastically deformed to suppress traveling vibration and ensure straightness.

On the other hand, when traveling in a relatively hard upland, the concave portion 8 formed between the circumferentially long portions 7A of the second lug and the laterally long portion 7B of the second lug 7 are formed.
When running in a relatively soft field such as sandy land, the first lug 6 and the second lug 6 Rug 7 is driven into the ground and driven.

During this traveling, straightness is ensured by the circumferentially long portions 7A of the first lug 6 and the second lug 7, and the lateral long portions 7B of the second lug 7 are the inclined tread portions 4A and 4B, so that the wheel outer diameter is Even if it is not increased, the rug height is sufficiently secured, and it will be possible to run without slipping by exerting a large traction force.

In addition, the left and right inclined treads 4A, 4B up to the first, second
When the lugs 6 and 7 bite and travel, the inclined tread portion 4A,
With 4B, a sufficient amount of loft acts to prevent side shake of the machine.

Furthermore, the soil lifted up by the left and right inclined treads 4A, 4B is slid off when the inclined treads 4A, 4B take off to prevent adherent growth, and eventually the solidification of adhered soil is reduced to prevent slipping. .

Further, even if soil adheres to the inner peripheral surface of the elastic ring pair 4, since the inner peripheral surface is inclined surfaces 4C and 4D, it is slipped off when taking off.

Although the embodiment of the present invention is as described above, the second lug 7 may have the lateral long portions 7B on both left and right sides.

Further, the inclined tread portions 4A, 4B and the inclined surfaces 4C, 4D may have a curved convex shape or a curved concave shape.

(Effect of the Invention) As described in detail above, according to the present invention, since the rim is surrounded and fixed by the elastic ring body, the rim does not rust and has a basic function that has durability and a sufficient supporting function of the machine. In addition to the effects, the following peculiar operational effects are exhibited.

The lug made of a rubber material integrally formed on the outer periphery of the elastic ring body has a lug height of the second lug higher than that of the first lug, and the top portion of the first lug is located between the circumferential portions of the second lug. Since it has a concave portion, when traveling on a hard road surface,
The circumferential portion of the second lug can be easily elastically deformed to an appropriate degree, and can exert a vibration absorbing action.

; Since the left and right inclined treads that incline in the radial direction are formed through the skirts of the first lug and the circumferential portion of the second lug, it is possible to secure the first and second lugs to the ground up to the tread. When traveling in this state, straightness can be secured by the peripheral length portions of the first lug and the second lug, and the height of the side length portion of the second lug is sufficient, and a large traction force can be exerted. Lateral shake of the machine can be reliably prevented by the swelling on the left and right inclined treads.

Therefore, the agricultural wheel of the present invention is particularly profitable for field work.

[Brief description of drawings]

The drawing shows an embodiment of the present invention, and FIG. 1 is a sectional view taken along line CC of FIG.
2 is a sectional view of the line, FIG.
The figure is a perspective view of a main part, FIG. 4 is an enlarged sectional view taken along the line AA in FIG. 2, and FIG. 5 is a plan view of the main part. 1 ... Boss, 2 ... Spoke, 3 ... Rim, 4 ... Elastic ring, 4
A, 4B ... inclined tread portion, 5 ... lug, 6 ... first lug, 7 ... second lug, 7A ... circumferential length portion, 7B ... side length portion.

Claims (1)

(57) [Scope of utility model registration request] 1. An annular elastic ring body (4) is formed by surrounding and fixing an entire circumference of an annular rim (3) with a rubber material, and the outer circumference of the elastic ring body (4) is made of a rubber material. Numerous rugs (5)
In the agricultural wheel in which the lug (5) is integrally formed, the lug (5) is located at the center in the width direction of the elastic ring body (4) and extends in the circumferential direction.
And a circumferentially long portion (7A) having a trapezoidal cross section, which is adjacent to the first lug (6) in the circumferential direction and extends in the circumferential direction, and the circumferentially long portion (7A).
A) A second lug (7) having a lateral long portion (7B) extending outwardly from the second lug (7) with respect to the lug height of the first lug (6). The height is set to be high, and a recess (8) is formed at the top of the first lug (6) between the peripheral portions (7A) of the second lug (7), and further, the first lug (6) and The agricultural wheel characterized by being inclined in the radial direction through the skirt of the circumferential portion (7A) of the second lug (7) to form the left and right inclined tread portions (4A) (4B).