JPH0633775Y2 - Mower suspension - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a mower suspension device for a tractor, and more particularly to a mower suspension device in which a connecting shaft of a parallel link is locked by a wedge-shaped pin.

[Problems to be solved by conventional techniques and devices] Conventionally, in a mower suspension device for a tractor, a lower end portion of an elevating arm attached to the machine side is fastened by a bolt or the like to a bracket on the upper surface of the mower deck for pivotal attachment. Was. Therefore, when the moody is not required, it takes a lot of time to remove the moody, and the installation also requires the same labor. Therefore, a structure has been devised in which a pin is inserted into the mounting portion to facilitate the attachment / detachment, but there is a defect that there is a gap in the mounting portion of the pin and unnecessary vibration and noise are generated during the work. Therefore, there arise technical problems that must be solved to overcome these deficiencies.

[Means for solving problems]

This invention has been proposed as a solution to the above problem in view of the above problems. The upper end of the parallel link is pivotally attached to the main body side, and the connecting shaft is pivotally attached to the lower end thereof. In a mower suspension device in which the parallel links are arranged in the front and rear, and the front and rear lower ends of the parallel links are connected by a connecting rod, brackets having cutouts are fixed respectively in front of and behind the mower, A mower device is provided which is characterized in that the connecting shafts of the links are inserted into the notches of the front and rear brackets, respectively, and then wedge-shaped pins are inserted into the connecting portions of the brackets and the connecting shafts and locked. Is.

[Action]

According to the present invention, in a mower suspension device composed of parallel links, a connecting shaft pivotally attached to the lower end of the parallel link is inserted into a bracket on the mower side, and a wedge shape is formed at a connecting portion between the connecting shaft and the bracket. The mower is suspended by inserting the pin. Therefore, a tool such as a spanner is not required for attaching / detaching the mower, and the attaching / detaching time is shortened. Further, since the connecting portion is locked by the wedge-shaped pin, the gap between the connecting portions is eliminated, and the swinging and noise of the mower, which are generated during the conventional work, are reduced.

〔Example〕

An embodiment of the present invention will be described below in detail with reference to the attached drawings. For convenience of description, a structure that is conventionally known will be described at the same time. In FIGS. 1 to 5, the connecting shaft (3) is attached to the lower ends (1a) and (2a) of the parallel links (1) and (2).
(4) is pivotally attached, and the upper ends (1b) and (2b) of the parallel links (1) and (2) are pivotally attached to the floor lower surface of the tractor (5). Further, a connecting rod (6) is provided between the lower end portions (1a) and (2a).
The connection is made at (6), and the link (7) is pivotally attached at an appropriate position on the connecting rod (6) and further connected to the lift arm (8). Further, the bracket (10) is fixedly attached to the front side surface of the mower (9). The bracket (10) is formed by folding the left and right ends in half to form insertion portions (11) (11), and a cutout portion into which the connecting shaft (3) of the parallel link (1) is inserted in the folded portion. (12) Provide (12).
Then, the bracket (13) is provided on the rear upper surface of the mower (9).
To be fixed. The bracket (13) is U-shaped in plan view, and notches (14) (14) into which the connecting shafts (4) of the parallel links (2) are to be inserted are provided on both sides. The brackets (10) and (13) are the parallel links (1).
The connecting shafts (3) and (4) of (2) are attached in correspondence with each other. Thus, in attaching the mower (9) to the tractor (5), the parallel link (1) is attached.
The connecting shafts (3) and (4) of (2) are moved in parallel from the front of the mower (9), and the notches (1) of the brackets (10) and (13) are moved.
2) Insert the connecting shafts (3) and (4) into the (14), respectively. Then, as shown in FIG. 5, wedge-shaped pins (15) and (15) are inserted from above the insertion portions (11) and (11) of the bracket (10) so that the connecting shaft (3) is connected to the bracket (10). ) Lock so that it does not leave. In addition, when the pin (15) is inserted, the head of the pin (15) is manually pressed, or if the pin (15) is pressed and fitted, the connecting shafts (3) (4) and the bracket ( 10) and can be locked without rattling. Further, the pin (15) has an elastic ring (16) mounted on the upper part thereof, the lower part thereof is formed into a wedge-like shape and has a notch (17) on the front surface of the lower part. Then, after inserting the pin (15) into the insertion portion (11), the ring (16) is tensioned and locked in the notch portion (17). Thus, the mower (9) is suspended from the parallel links (1) and (2). In addition, since the bracket (10) is locked by the wedge-shaped pin (15) as described above, there is no play between the connecting shaft (3) and the bracket (10), and the elasticity is high. The pins are securely connected by the sex ring (16), and there is no fear that the pins will accidentally fall off. Further, as another embodiment, as shown in FIGS. 6 and 7, the notches (12) and (14) of the brackets (10) and (13) are enlarged so that the front bracket ( The pins (18) and (18) may be inserted into the pin 10 and the lower portion of the pin (18) may be locked by the split pin (19).

[Effect of device]

In this invention, as described in detail in the above embodiment, the connecting shafts of the parallel links attached to the tractor are inserted into the notches of the brackets provided at the front and rear of the mower, and are locked by the wedge-shaped pins. . Therefore, a tool is not required for attaching the mower, the pin can be surely connected only by inserting the pin, and the mower can be easily detached.
Further, the pin has a wedge shape, and the tapered portion thereof does not cause rattling between the connecting shaft and the bracket, which reduces vibration and noise of the mower during work, and is of various practical uses. A valuable idea.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention. FIG. 1 is a side view of a tractor, FIG. 2 is a side view of a mower suspension device, FIGS. 3 and 4 are oblique views of a bracket, and FIG. 5 is an oblique view for explaining a pin insertion state. 6 and 7 show another embodiment. FIG. 6 is a side view, and FIG. 7 is an enlarged perspective view of a main part. Explanation of symbols (1) (2) …… Parallel link, (1a) (2a) …… Lower end (1b) (2b) …… Upper end, (3) (4) …… Connecting shaft (5) …… Tractor , (6) …… Reciprocal rod (9) …… Mower, (10) (13) …… Bracket (12) (14) …… Notch, (15) (18) …… Pin

Claims (1)

[Scope of utility model registration request] 1. A parallel link in which an upper end of a parallel link is rotatably pivoted to the main body side, and a lower end of the parallel link is pivotally mounted to the front and rear ends of the parallel link. In a mower suspension device in which the parts are connected by a connecting rod, brackets having cutouts are fixed to the front and rear of the mower, respectively, and the connecting shafts of the parallel links are inserted into the cutouts of the front and rear brackets, respectively. A mower suspension device characterized in that a wedge-shaped pin is inserted and locked in a connecting portion between the bracket and the connecting shaft.