JP2543227Y2 - Agricultural wheels - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to agricultural wheels, and more specifically,
The present invention relates to a device suitable for wheels for a management machine that performs weeding, digging, digging, cultivating soil, covering soil, putting soil, making floors in a house, and the like in a field.

(Prior Art) As an agricultural wheel for a control machine, an iron disk is provided with iron traction blades on the outer peripheral side surface thereof (see Japanese Utility Model Application Laid-Open No. 61-108603, Japanese Patent No. 744965, and Japanese Patent No. 744924). ), An iron rim with an iron traction lug attached to its outer peripheral surface (see Japanese Utility Model Application Laid-Open No. 61-108602 and Japanese Utility Model Application Laid-Open No. 62-66804). A rug integrally formed is used.

(Issues to be solved by the invention) In the conventional iron disk with iron traction blades attached to the outer surface, during normal road running, the iron disk with a small coefficient of friction touches the ground, causing a large slip. However, when the aircraft is tilted, the towing blades touch the ground and vibrate violently, and the aircraft slips on the track to the truck bed, making it difficult to load and unload the aircraft on the bed. Further, in soft fields such as sandy soil, the work is difficult due to slippage, and in wetlands, soil adheres to the blades.

With a conventional iron rim with an iron tow lug attached to the work surface, the iron blades touch the ground during normal driving on the road, so the vibration is large, and the lug may fit into the history plate to the truck bed. It is difficult to load and unload to the carrier. Further, in soft fields such as sandy soil, the work is difficult due to slippage, and in wetlands, soil adheres to the blades.

With a conventional pneumatic rubber tire with a rubber traction lug integrally formed on the outer circumference, normal running on the road and running on the ayumi board are not a problem, but the amount of biting into the soil is small, so for work requiring traction force Is not suitable, and traction is not exerted even in soft fields such as sandy or hard fields such as clay, and the applicable range is narrow. In wetlands, soil adheres between the lugs. Therefore, when the lug interval is increased, the vibration becomes severe.

An object of the present invention is to solve the above-mentioned problems of the conventional agricultural wheels.

(Means for Solving the Problems) The present invention provides a flat elastic ring 7 that can be bent in the circumferential direction at substantially equal intervals in the circumferential direction and that can be elastically restored after the deformation. This is an agricultural wheel in which the blades 8 are integrally formed, and the following technical measures are taken to achieve the above object.

That is, according to the present invention, the flat blade 8 protrudes radially outward from the elastic ring 7 and protrudes in the axle direction,
The flat plate portion 9 located on the centripetal line OO of the elastic ring 7 and the radially inner portion 10 connected to the flat plate portion 9 via the bent portion 9A are extended at a receding angle θ with respect to the centripetal line OO. And a straight lug 12 is integrally formed on the outer periphery of the elastic ring 7 on the ground side and between the flat blades 8 facing each other. It is.

(Operation) The agricultural wheel 1 according to the present invention is used by being mounted on an axle such as a field management machine.

When the control device using the wheels as a traveling device travels on a general road, since the flat blades 8 are formed integrally with the annular elastic ring 7, large vibrations may be caused by the presence of each blade 8. Absent.

In addition, the elastic wheel 7 having the flat blades 8 integrally has a larger coefficient of friction than the conventional steel wheel, so that the slip is reduced. It is possible to run the truck on the footboard to the carrier without any trouble.

When the management machine is run for management work in a soft field such as a sandy field or a hard field, flat blades 8 protruding radially and in the axle direction on the elastic ring 7 are flat plate portions located on the centripetal line OO. 9 and a radially inner portion 10 connected to the flat plate portion 9
Is formed at an angle of receding angle θ with respect to the centripetal line OO, so that the flat plate portion 9 is easily penetrated into and out of the soil, and the straight lug 12 is formed. In combination with this, the traction force is secured, the radially inner portion 10 prevents excessive intrusion into the soil, and improves the detachment of the attached soil.

Further, in the case of traveling in wetlands, even if soil adheres to the flat blades 8, the blades 8 prevent the soil from adhering because the bending and repetition of elasticity are repeated thereafter.

Also, since there is a straight lug 12 between the flat blades 8,
Even if the blade pitch is wide (large) in order to prevent mud adhesion, the generation of vibration is suppressed by the straight lug 12.

(Example) Hereinafter, an example of the present invention is described with reference to drawings.

FIGS. 1 to 3 show a first embodiment, in which 1 is an agricultural wheel, which has an insertion hole 2 for an axle such as a control machine at the center and a mounting hole 3 for pins, bolts and the like. In the embodiment, three spokes 5 are welded radially to the boss 4, and a hollow metal rim 6 serving as an annular core material is welded to the tips of the three spokes 5,
Further, the rim 6 is covered with an elastic material such as rubber to form an elastic ring 7.

The elastic ring 7 is integrally formed with flat blades 8 which can be bent and deformed in the circumferential direction at substantially equal intervals in the circumferential direction and which can be elastically restored after the deformation.

The flat blade 8 protrudes radially outward from the elastic ring body 7 and protrudes in both axle directions.

Assuming that the agricultural wheel 1 rotates (forwards) in the direction indicated by the arrow C in FIG. 1, the axial wing of the flat blade 8 has a flat portion on the wheel radiation (centripetal line) O-O on the ground digging side. The radial inner portion 10 connected to the flat plate portion 9 via the bent portion 9A at 9 intersects the wheel radiation OO at the retreat angle θ so as to be viewed from the axle direction (hereinafter also referred to as side view). A) It has a substantially "U" shape.

The flat blade 8 has a substantially trapezoidal cross section, and its top contact surface is located on the same circumferential line, and the forward side (the kick surface side).
The reverse side (anti-kick side) is thicker than
A substantially trapezoidal lug is formed substantially at the center in the left-right direction of the elastic wheel body 7 to improve straightness and suppress vibration, suppress excessive elastic deformation during forward movement, and secure a large traction force.

However, in the first embodiment, since the rotation direction of the agricultural wheel 1 is determined as shown by the arrow C, by providing the step 11 on the side opposite to the kick surface as shown in FIG. It is more advantageous to secure and improve the removability of the attached mud by elastic restoration.

A rectilinear lug 12 having a trapezoidal cross section and having a top surface substantially on the same circumference as the top surface of the blade 8 is integrally formed on the contact surface side of the elastic ring body 7 between the flat blades 8. 12, the straightness is ensured and vibration is prevented even if the blade pitch 4 is increased. Therefore, a plurality of lugs 12 may be provided between the blades 8.

A substantially trapezoidal lug portion of the flat blade 8 is provided on the outer periphery of the elastic ring 7 on the grounding surface side. And the linear lug 12 are integrally formed so as to be connected to each other, and the inner periphery of the elastic ring body 7 on the side opposite to the ground contact surface is tapered in a radially inward direction, and in the embodiment, a cross section having a circular arc surface at the end. An inner peripheral projection 14 having a substantially triangular shape is integrally formed so as to connect the flat blades 8 facing each other in the circumferential direction.

The elastic projection 13 has its outer peripheral top surface on the circumference slightly inward of the top surface of the substantially trapezoidal lug of the flat blade 8, and has a radial dimension D and an axial direction as shown in FIG. When the directional dimension is E, D / E is 1.5 to 2.5.

If this is smaller than 1.5, the amount of bite into the soil is small,
In addition, the vibration suppressing force is low, and the wheel 1 is apt to be laterally displaced in the axial direction. If it exceeds 2.5, the strength of the projection 13 becomes too small, and the amount of rubber increases, which is disadvantageous in cost. Because.

The inner peripheral projections 14 have a substantially triangular cross-section when viewed from the ground, and prevent the soil and the like attached to the projections 14 from being lifted out of the soil while being distributed to the left and right.

FIG. 4 shows a second embodiment, in which the flat blades 8 are made into large and small blade portions 8A and 8B having large and small axial protrusion amounts.
Are alternately arranged in the left-right direction. According to this, the pitch of the blades in the same example is increased to prevent soil clogging, and the small blades 8B only support the tractive force but suppress the generation of vibration.

FIG. 5 shows a third embodiment, in which the flat blades 8 are composed only of large blades and are arranged alternately on the left and right.

FIG. 6 shows a comparative example, in which the entirety of the flat blades 8 is arranged on the centripetal line OO so that invasion into the soil is facilitated.

Therefore, in this comparative example, the wheel can be mounted without any restriction on the rotational direction of the wheel.

However, as in the first embodiment, the blade 8 is composed of a flat plate portion and a radially inner portion, so that biting into the field is ensured by the flat plate portion, and excessive settlement is suppressed by the radially inner portion, so that the softer Irrespective of whether or not the traction force is sufficient, the turbulence of the soil is prevented and the vehicle can run without slipping.
This is advantageous in that when soil comes out of the field, the soil attached to the soil can be separated and dropped, and soil growth can be prevented.

In the above embodiment, the elastic wheel 7 may be a pneumatic tire.

(Effects of the Invention) The present invention is as described above, and the flat blade 8 protrudes radially outward from the elastic ring 7 and protrudes in the axle direction. Since it has 9, the intrusion into the soil becomes light, whereby the biting amount is large, and the traction force can be secured without slipping.

In particular, the flat blade 8 has the flat plate portion 9 and the
With the radially inner portion 10 being connected and having a U-shape in a side view, excessive intrusion into the soil is prevented by the radially inner portion 10 and soil removal of the adhered soil carried around is prevented. It will be good.

Further, since the straight lug 12 is integrally formed on the outer periphery of the elastic ring body 7 on the ground side and between the opposed flat blades 8, the pitch of the blades 8 is widened to prevent soil clogging. Vibration can be reduced and straightness can be ensured.

Therefore, the agricultural wheel of the present invention can be used irrespective of sand lands, clay lands, wetlands, and the like, and is very profitable.

[Brief description of the drawings]

The drawings show an embodiment of the present invention, and FIGS.
FIG. 1 is an overall side view partially cut away, FIG. 2 is an enlarged sectional view taken along the line XX of FIG. 1, FIG. 3 is a partial plan view, and FIG. FIG. 5 is a plan view of a main part of the third embodiment, and FIG. 6 is a side view of a main part of a comparative example. 1... Agricultural wheels, 7... Elastic wheels, 8.
9: Flat plate, 12: Straight lug.

Claims (1)

(57) [Scope of request for utility model registration] 1. An annular elastic ring (7) is integrally formed with flat blades (8) that can be bent and deformed in the circumferential direction at substantially equal intervals in the circumferential direction and that can be elastically restored after the deformation. A molded agricultural wheel, wherein the flat blades (8) protrude radially outward from the elastic wheel (7) and protrude in the axle direction, so that the centripetal line of the elastic wheel (7) is formed. The axle is composed of a flat plate portion (9) located on O-O and a radially inner portion (10) connected to the flat plate portion (9) through a bent portion (9A) with a receding angle (θ). The elastic ring (7) is formed in a substantially U-shape as viewed from the direction.
A straight lug (12) is integrally formed between the opposed flat blades (8) on the outer periphery on the ground side of the agricultural wheel.