JPH0739971Y2 - Rolling body type weight for agricultural tractors - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a rolling element type weight for agricultural tractors.

[Background of the Invention] When a front loader is attached to the front part of an agricultural tractor for work, there is a risk that the rear part of the tractor may float up due to the load applied to the front loader.

Therefore, when using the front loader, it is necessary to attach a weight to the rear part of the tractor.

[Prior Art] Conventionally, existing drum weights have been used as weights for agricultural tractors.

As shown in FIG. 5, this existing drum weight has a support shaft 3 at the center of each of the left and right end faces 2.2 of the rolling element 24.
Is provided.

[Problems to be Solved by the Invention] Therefore, conventionally, there are the following problems.

Since the drum weight is supported only at two positions on the left and right support shafts 3, the drum weight cannot be mounted on the rear part of the tractor through an automatic hitch with three-point support.

For this reason, the operation of inserting the support shaft 3 into the insertion holes 25 of the two lower links 22 of the three-point link 21 at the rear part of the tractor and the operation of retaining it are required, which makes the attachment and detachment work troublesome.

Further, since the drum weight is directly attached to the lower link 22, the arrangement of the drum weight is close to the body of the tractor, and the drum weight has to be heavy.

An object of the present invention is to allow a weight to be easily attached to and detached from a rear portion of a tractor, and to allow the weight to be arranged rearward of the tractor.

[Means for Solving the Problems] (First Invention) The first invention is characterized in that a weight for an agricultural tractor is configured as follows.

For example, as shown in FIG. 1, FIG. 2 or FIG. The part 5 is rotatably supported, and the base end part 7 of the lower swing support arm 6 is swingably connected to the base end part 5 of the upper support arm 4, so that both the left and right upper support arms 4 and 4 are supported. Support pin 9 between the tips 8 of the
And the lower support pins 11 project from the tip end portions 10 of the left and right lower swing support arms 6, 6 in the left-right direction.

The rolling body type weight body 1 may be cylindrical as shown in FIG. 1 or may be spherical.

The base end portion 7 of the lower swing support arm 6 may be pivotally supported on the support shaft 3 as shown in FIG. 1, or may be provided at a midway portion of the upper support arm 4 as shown in FIG. It may be pivotally supported via the shaft 20 of the.

The lower support pin 11 may be a left and right separate body as shown in FIG. 1, or may be one that uses the left and right ends of a long body.

As shown in FIG. 1, the lower support pins 11 may be projected outward from the tip end portion 10 of the lower swing support arm 6, or may be projected inward, respectively. The other may project outward and the other may project inward.

(Second Invention) A second invention is characterized in that a weight for an agricultural tractor is configured as follows.

For example, as shown in FIG. 4, the base end portion 5 of the upper support arm 4 is rotatably supported at the center portion of each of the left and right end surfaces 2, 2 of the rolling body type weight body 1 via the support shaft 3. , An upper support pin 9 is installed between the tip portions 8 and 8 of the left and right upper support arms 4 and 4 and a pair of left and right lower support pins 11 is provided from the eccentric portions of the left and right end surfaces 2 and 2 of the weight body 1.・ 11 is projected.

The rolling element body 1 may have a cylindrical shape as shown in FIG. 4 or a spherical shape.

The lower support pin 11 may be a separate body on the left and right as shown in FIG. 4, or may be one that uses the left and right ends of a long body.

[Effect] The first or second invention has the following effects.

The weight main body can be supported at three upper and lower positions by one upper support pin and two lower support pins, and can be engaged with and disengaged from a three-point supported auto hitch.

Therefore, the work of attaching and detaching the weight main body to the rear part of the tractor can be easily performed through the auto hitch without a troublesome operation.

In addition, the weight can be arranged rearward by the amount of the automatic hitch, and the weight of the weight can be reduced.

In the case of the first invention, the lower swing support arm is swung, and in the second invention, the upper support arm is swung, so that the upper and lower engaging portions of the auto hitch are vertically separated from each other. The separation distance between the upper support pin and the lower support pin can be adjusted according to the distance, and the lower support pins protruding to the left and right sides have a predetermined axial length regardless of the horizontal separation distance between the lower engaging parts of the auto hitch. Since the location is locked by the lower locking portion, it can be attached / detached to / from various auto hitches having different vertical and horizontal separation distances without any trouble.

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

1 and 2 are views for explaining a rolling member type weight for an agricultural tractor according to an embodiment of the first invention, FIG. 1 (A) is a perspective view of a weight mounted state, and FIG. 1 (B). Is a rear view of the weight, FIG. 2 is a side view of the mounted state of the weight, FIG. 3 is a side view of the weight for explaining a modification of the embodiment of the first invention, and FIG. 4 is implementation of the second invention. It is a figure explaining the rolling body type weight for agricultural tractors which concerns on an example, Drawing 4 (A) is a figure equivalent to Drawing 1 (A), and Drawing 4 (B) is a figure equivalent to Drawing 1 (B).

First, an embodiment of the first invention will be described.

In FIGS. 1 and 2, reference numeral 18 indicates a rolling element type weight.

As shown in FIG. 2, this weight 18 is used when the front loader 19 is attached to the front part of the tractor 13 for work.
It is mounted on the rear part of the tractor 13 to prevent the rear part of the tractor 13 from floating up due to the load applied to the front loader 19.

As shown in FIGS. 1 (A) and (B), the rolling element type weight body 1 of the weight 18 is formed in a cylindrical shape, and the inside thereof is filled with concrete, and the central portion of each of the left and right end faces 2 and 2 thereof. The support shaft 3 is projected to each of them.

A base end portion 5 of an upper support arm 4 is rotatably supported on each support shaft 3, and a lower swing support arm 6 is supported with respect to a base end portion 5 of the upper support arm 4.
The base end portion 7 of the is connected swingably, and the left and right upper support arms 4
By installing an upper support pin 9 between the tip portions 8 and 8 of 4, and by projecting the lower support pin 11 in the left-right direction from the tip portions 10 of the left and right lower swing support arms 6 and 6, The weight body 1 can be supported at three upper and lower positions by one upper support pin 9 and two lower support pins 11, and a three-point link 21
Upper and lower locking parts of the auto hitch 12 with three-point support attached to the
It can be engaged and disengaged on 14/15.

Therefore, the attachment / detachment work of the weight main body 1 to / from the rear part of the tractor 13 can be easily performed through the auto hitch 12 without a troublesome operation.

Further, the weight body 1 can be arranged further rearward by the amount of the automatic hitch 12, and the weight of the weight body 1 can be reduced.

Further, as the lower swing support arm 6 swings, as shown in FIG. 1 (B), the upper support is provided in accordance with the vertical separation distance 16 between the upper engaging portion 14 and the lower engaging portion 15 of the auto hitch 12. In addition to adjusting the distance between the pin 9 and the lower support pin 11,
The lower support pin 11 protruding to the left and right sides is locked by the lower locking portion 15 at a predetermined position in the axial direction regardless of the left and right distance 17 between the lower locking portions 15 and 15 of the auto hitch 12.

Therefore, it is possible to attach / detach to / from various auto hitches 12 having different vertical separation distances 16 and horizontal separation distances 17 described above.

The modification shown in FIG. 3 is a base end portion 7 of the lower swing support arm 6.
Is pivotally supported in the middle of the upper support arm 4 via a shaft 20. In this case as well, the lower swing support arm 6 swings to cause the upper lock portion 14 and the lower lock portion of the automatic hitch 12 to lock. The separation distance between the upper support pin 9 and the lower support pin 11 can be adjusted according to the vertical separation distance 16 from the portion 15.

Further, the weight 18 of the above-mentioned embodiment and its modification can be used as it is as a compression roller by grounding the rolling body type weight body 1 by the descending operation of the three-point link 21.

Next, an embodiment according to the second invention will be described.

As shown in FIG. 4, in the weight 18 of this embodiment, the lower swing support arm 6 is eliminated from the embodiment of the first invention or the modification thereof, and the pair of lower support pins 11 and 11 are attached to the weight main body 1. It is made to project from the eccentric part of each of the left and right end faces 2.2. Also in this embodiment, the swinging of the upper support arm 4 causes the upper portion of the auto hitch 12 to move upward or downward depending on the vertical separation distance 16 between the upper engaging portion 14 and the lower engaging portion 15 as in the case of the above-described embodiment or the modified example. The distance between the support pin 9 and the lower support pin 11 can be adjusted.

Further, in the weight 18 of this embodiment, the lower support pin 11 protruding from the weight main body 1 is a lower locking portion of the auto hitch 12.
Since the weight body 1 is locked by 15 and cannot roll,
The weight 18 cannot be used as a compression roller with the auto hitch 12 attached, but the upper support arm 4 is removed from the weight body 1, the auto hitch 12 is removed from the three-point link 21, and the spindle 3 is connected to the three-point link 21. The lower link 22
The weight body 1 can be used as a compression roller by supporting the weight body 1 through the insertion hole 25.

A support arm receiving surface 23 is provided at the base end of the support shaft 3 and is formed outside the tip of the lower support pin 11, so that when the weight body 1 is used as a compression roller as described above. The link 22 can be diverted to the outside of the lower support pin 11 so as to avoid interference between the lower support pin 11 and the lower link 22 so that the weight body 1 does not hinder rolling.

[Brief description of drawings]

1 and 2 are views for explaining a rolling member type weight for an agricultural tractor according to an embodiment of the first invention, FIG. 1 (A) is a perspective view of a weight mounted state, and FIG. 1 (B). Is a rear view of the weight, FIG. 2 is a side view of the mounted state of the weight, FIG. 3 is a side view of the weight for explaining a modification of the embodiment of the first invention, and FIG. 4 is implementation of the second invention. It is a figure explaining the rolling element type weight for agricultural tractors which concerns on an example, Drawing 4 (A) is a figure equivalent to Drawing 1 (A), Drawing 4 (B) is a figure equivalent to Drawing 1 (B), FIG. 5 is a view corresponding to FIG. 1 (A) of a conventional drum weight. 1 …… Rolling body type weight body, 2 …… 1 left and right end faces, 3
…… Spindle, 4 …… Upper support arm, 5 …… 4 base end, 6…
... Lower swing support arm, 7 ... 6 base end, 8 ... 4 tip, 9 ... upper support pin, 10 ... 6 tip, 11 ... lower support pin.

Claims (2)

[Scope of utility model registration request] 1. Left and right end surfaces 2 of a rolling element body 1
-The upper support arm 4 via the support shaft 3 at the center of 2 respectively
Rotatably supporting the base end portion 5 of the upper support arm 4 and swingably connecting the base end portion 7 of the lower swing support arm 6 to the base end portion 5 of the upper support arm 4. The upper support pin 9 is installed between the tip portions 8 and 8 of the 4.4, and the lower support pin 11 is protruded from the tip portions 10 of the left and right lower swing support arms 6 and 6 in the left-right direction. Rolling body type weight for agricultural tractors. 2. Left and right end faces 2 of the rolling body type weight body 1
・ The base end portion 5 of the upper support arm 4 is rotatably supported by the central portion of 2 via the support shaft 3, and the upper support is provided between the tip portions 8 and 8 of the left and right upper support arms 4 and 4. The pins 9 are installed, and the left and right end surfaces 2 of the weight body 1
・ Rotating body type weight for agricultural tractors, characterized by a pair of left and right lower support pins 11 ・ 11 protruding from the eccentric part 2.