JPH0454748Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a reinforcing structure for a mower deck in a mower.

(Prior art) In mowers, as shown in Japanese Utility Model Application Publication No. 59-6441, a plurality of bearing cases are arranged on a mower deck.
Some bearing cases have a cutter shaft provided with a cutter installed vertically so as to be freely rotatable.

By the way, since the reaction force of the cutter directly acts on the attachment part of the bearing case of the mower deck, it is necessary to increase the strength of the attachment part.

Accordingly, in the above-mentioned conventional art, the strength of the attachment part of the mower deck was increased by welding a reinforcing plate to the attachment part of the mower deck.

(Problems to be solved by the invention) However, with the above method, there is a problem that it takes time and effort to weld the reinforcing plate, and the attachment part of the mower deck is distorted due to the influence of welding, and it takes time and effort to correct this distortion. It was hot too.

An object of the present invention is to provide a reinforcement structure for a mower deck in a mower that can solve the above problems.

(Means for Solving the Problems) In order to achieve the above object, the present invention is characterized in that a plurality of openings are formed in the mower deck, a bearing case is fitted into each opening, and the bearing case is A reinforcing structure for the mower deck in a mower in which a mounting flange of a case is fixed to the mower deck with bolts, a cutter shaft in a vertical axis position is rotatably supported by the bearing case, and a cutter is attached to a lower end of the cutter shaft. A reinforcing portion is formed in the vertical direction at an opening peripheral edge of the mower deck and an inner circumferential portion of the bolt is attached, and a reinforcing portion is formed to bulge in the vertical direction, and a portion of the mower deck between the adjacent reinforcing portions, The feature is that the portion itself is bulged in the vertical direction, and a reinforcing rib is formed that connects adjacent reinforcing portions.

(Embodiment) Hereinafter, the first embodiment of the present invention will be explained based on the drawings of Figs. 1 to 5. In Figs. A pair of front axle cases 2 are provided to protrude outward. 3 is the front PTO shaft, and 4 is the front wheel.

Reference numeral 5 denotes a front mount mower, which includes a connecting link 6, a hanging device 7, and a lifting device 8 at the front of the vehicle body 1.
It is removably mounted offset to the left via the front wheel 4, and is located in front of the front wheel 4.

The connecting links 6 have a pair on the left and right, are non-bendable, and have a roughly U-shaped shape when viewed from the side, and have a left-right pivot shaft attached to a bracket 9 fixed to the front axle case 2 at the rear end. It is provided to be swingable in the vertical direction around 10, and its front end portions are pivotally connected to both left and right sides of the front portion of the mower deck 11 of the mower 5.

The hanging device 7 suspends the left and right sides of the rear part of the mower deck 11 at the rear of both connecting links 6, and has a mowing height adjustment function.
It has a pair of left and right hanging members 14 in which pins 12 are inserted into elongated holes 13, and a pair of left and right mounting plates 15 that are fixedly installed on both left and right sides of the rear part of the mower deck 11 and to which the hanging members 14 are connected.

The lifting device 8 raises and lowers the mower 5 via a connecting link 6 and a hanging device 7, and is configured as follows.

That is, a pair of left and right support plates 16 protrude forward from both sides of the front portion of the vehicle body 1, and a left and right cylinder 17 is fixed to both support plates 16.

Reference numeral 18 denotes a rotation shaft, which is rotatably inserted into the cylinder 17. A pair of left and right interlocking levers 19 are fixed to both ends of the rotation shaft 18 so as to protrude forward.
An operating lever 20 is fixedly provided on the left side of the lever 20 in a downwardly projecting manner.

Reference numeral 21 denotes a double acting type hydraulic cylinder, the base of which is pivotally supported on the pivot shaft 10 of the left bracket 9, and the tip thereof connected to the operating lever 20.

Reference numeral 22 denotes a pair of left and right hanging members, whose elongated holes 23
A pin 24 of the interlocking lever 19 is movably inserted into the holder, and its lower end is pivotally connected to the rear part of the connecting link 6.

As shown in FIGS. 1 and 4, bearing cases 25 are disposed at the center in the left and right direction at the rear of the mower deck 11 and on both left and right sides, respectively.
A rectangular mounting flange 26 is detachably attached to the lower surface of the mower deck 11 with bolts 27.

The central part of the attachment part of the bearing case 25 in the mower deck 11 is formed to bulge upward to form a reinforcing part 28, and an opening 29 through which the bearing case 25 is inserted is formed in the central part of the reinforcing part 28. .

Further, as shown in FIG. 5, the mower deck 11 is provided with reinforcing ribs 30 that bulge upward and connect the adjacent reinforcing portions 28. As shown in FIG. The width of the reinforcing rib 30 is smaller than the diameter of the reinforcing portion 28.

In each bearing case 25, a cutter shaft 32 including a cutter 31 is vertically installed rotatably via a bearing, and a pulley 33 is fixedly attached to each cutter shaft 32, and these pulleys 33 are interlocked by a belt 34. The pulley 33 and belt 34 constitute a belt transmission mechanism 35. 36 is a cover,
It covers the belt transmission mechanism 35.

Reference numeral 37 denotes an input case, which is provided at the center in the left-right direction at the rear of the mower deck 11, is located above the center bearing case 25, and has an input shaft 38 that interlocks with the center cutter shaft 32. The input shaft 38 is at the front
It is interlocked and connected to the PTO shaft 3 via a universal joint shaft.

39 is a discharge cover, 40 is a gauge wheel for cutting height adjustment, and 41 is a limit gauge wheel.

6 and 7 show a second embodiment of the present invention, each reinforcing portion 28 is composed of a plurality of (four in the illustrated example) divided portions 28a arranged in the circumferential direction. In the central reinforcing section 28, the left and right divided sections 28a are integrally formed with the reinforcing ribs 30, and in the left and right reinforcing sections 28, the inner divided sections 28a are integrally formed with the reinforcing ribs 30.
It is formed integrally with 0.

FIG. 8 shows a third embodiment of the present invention, in which the diameter of the reinforcing portion 28 and the width of the reinforcing rib 30 are the same.

In the example, the mounting flange of the bearing case was attached to the lower surface of the mower deck, and the reinforcing portion and reinforcing rib were formed to bulge upward. Deformation may also be performed.

(Effects of the Invention) As detailed above, according to the present invention, the reinforcing portion is formed to bulge in the vertical direction at the periphery of the opening of the mower deck and the inner periphery of the bolt attachment position, Since reinforcing ribs are formed in the portions of the mower deck between adjacent reinforcing portions by bulging out in the vertical direction and connecting the adjacent reinforcing portions, the mounting portions of multiple bearing cases on the mower deck and the The strength between the mounting parts can be increased, and therefore there is no need to weld reinforcing plates to the mounting parts, etc., and therefore the time and effort of welding the reinforcing plates and removing welding distortion at the mounting parts can be reduced. It can be omitted and is advantageous in terms of cost.
The present invention not only has the above-mentioned advantages, but also has a simple structure and is very useful.

[Brief explanation of the drawing]

Figures 1 to 5 show a first embodiment of the present invention, with Figure 1 being a longitudinal sectional view of the main parts, Figure 2 being a side view of the mower, etc., and Figure 3 being a connecting link, lifting device, etc. 4 is a simplified plan view of the mower, FIG. 5 is a sectional view taken along line A-A in FIG. 4, and FIGS. 6 and 7 show a second embodiment of the present invention. 6 is a simplified plan view of the mower, FIG. 7 is a sectional view taken along line B--B in FIG. 6, and FIG. 8 is a simplified plan view of the mower showing a third embodiment of the present invention. 5...Front mount mower, 11...Mower deck, 25...Bearing case, 28...Reinforcement part, 30...Reinforcement rib, 31...Cut, 32...
...Katsuta shaft.

Claims (1)

[Claims for Utility Model Registration] A plurality of openings 29 are formed in the mower deck 11, a bearing case 25 is fitted into each opening 29, and a mounting flange 26 of the bearing case 25 is fixed to the mower deck 11 with bolts 27. A reinforcing structure for the mower deck 11 in a mower 5 in which a cutter shaft 32 in a vertical axis position is rotatably supported by the bearing case 25, and a cutter 31 is attached to the lower end of the cutter shaft 32, the mower deck At the periphery of the opening 29 of No. 11 and at the inner periphery of the mounting position of the bolt 27,
The reinforcing portions 28 are formed to bulge in the vertical direction, and the portions of the mower deck 11 between the adjacent reinforcing portions 28 are bulged in the vertical direction, and the adjacent reinforcing portions 28 are connected to each other. A reinforcing structure for a mower deck in a mower, characterized in that a reinforcing rib 30 is formed.