JP3753643B2 - Mower - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mowing machine in which a mower arranged in a state positioned between a front wheel and a rear wheel in a side view is connected to an airframe frame so as to swing up and down through a front link and a rear link.
[0002]
[Prior art]
This type of mower selects and installs mowers of various sizes and capabilities, that is, various specifications. The front-rear distance of the mower attached portion varies depending on the specifications.
[0003]
In such a case, conventionally, a specification according to the specification of the mower attached as a link has been prepared.
[0004]
[Problems to be solved by the invention]
However, according to the above-mentioned conventional technology, the aircraft side link is operated as a response to the mower specification, and operating the aircraft side link is troublesome and cumbersome, so the response to the mower specification is difficult. It was bad.
[0005]
An object of the present invention is to easily cope with the specifications of the mower.
[0006]
[Means for Solving the Problems]
The features / actions / effects of the mower according to the present invention according to claim 1 are as follows.
[0007]
〔Characteristic〕
A power take-off shaft, which is connected to a fuselage frame through a front link and a rear link so as to be able to swing up and down and project forward from the transmission case. The mower is configured to transmit power from the mower to the mower via a transmission shaft, and a mower mounting frame is connected to the front link and the rear link. Equipped with mounting parts corresponding to the mounted parts of each specification mower so that multiple specification mowers with different front and rear distances of the mounting parts can be mounted, and the front mounting part of the mounting parts of each specification mower It is shared between the front mounted parts, and a plurality of rear mounting parts are provided at the front and rear corresponding to a plurality of specifications of mowers .
[0008]
[Action]
By connecting the mower mounting frame across the front link and the rear link, the link system is completed, and the completed link system frame is equipped with a mounting portion corresponding to the mounted portion of each specification mower. By selecting the mounting part according to the mower specifications, it is possible to mount multiple specifications mowers, so various specifications can be made by simply selecting the mounting part without operating the troublesome link system on the machine side. Can be fitted with moor.
[0009]
Among the mounting parts, the front mounting part is shared between the mounted parts of the front part of each specification mower, and the rear mounting part is equipped with a plurality of front and rear parts corresponding to the multiple specification mowers . Regardless of the specifications of the mower, the front end that serves as an index for mowing the mower that is installed can be positioned at substantially the same position.
[0010]
〔effect〕
Therefore, the mower can be easily mounted corresponding to the specification of the mower to be mounted, and the visibility to the front end of the mower is almost constant regardless of the specifications of the mounted mower, so that the work can be performed satisfactorily.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIGS. 1 and 2, the mower has a body frame 3 having a pair of left and right front wheels 1 and a pair of left and right driving rear wheels 2 using caster wheels. The driver's seat 4 is supported in a state of being disposed on the side, and the mower 5 is disposed between the front wheel 1 and the driving rear wheel 2 in a side view via the left and right front links 6 and the left and right rear links 7. The engine 8 is mounted and supported in a state where it can be moved up and down and disposed behind the driver's seat 4 in a side view, and the mower 5 is raised along with pressure oil supply, and the mower 5 is driven by its own weight as the oil is drained. A lift cylinder 9 using a hydraulic cylinder to be lowered is provided.
[0012]
The front wheel 1 is supported by a body frame 3 via a wheel support frame 10, and the wheel support frame 10 is pivotally supported by the body frame 3 so as to be able to roll around a longitudinal axis P located at the center of the left and right of the body. The left and right front wheels 1 are attached to the left and right ends of the wheel support frame 10.
[0013]
The left and right driving rear wheels 2 are respectively supported by a body frame 3 via a rear axle case 21, and in the vicinity of the rear axle case 21, as shown in FIG. A pair of left and right hydrostatic continuously variable transmissions 22 that output power to the corresponding rear axle cases 21, that is, drive the driving rear wheels 2 independently, are arranged. That is, in this mower, the left and right continuously variable transmissions 22 are set to the same shift state to perform forward and reverse straight travel, and the left and right continuously variable transmissions 22 are set to different shift states to thereby change the low speed side continuously variable transmission 22. The center of the left and right driving rear wheels 2 is centered by turning the driving rear wheel 2 inside the turning and setting the one continuously variable transmission 22 in the forward state and the other continuously variable transmission 22 in the backward state. A turn around the turning center is performed. Reference numeral 23 denotes a steering lever for operating the continuously variable transmission 22 in an exceptional manner. When the steering lever is operated forward, the continuously variable transmission 22 is operated forward and increased, and when operated backward, The step transmission 22 is operated to increase backward. Each of the rear axle cases 21 is provided with a parking brake B.
[0014]
A countershaft 24 that distributes and transmits the power of the engine 8 to the left and right continuously variable transmission 22 and a work clutch 25 that intermittently transmits power to the mower 5 are provided between the left and right continuously variable transmission 22. The mission case 26 is arranged.
[0015]
The mower 5 has a structure in which three blades 5a are juxtaposed in the left-right direction so that power is transmitted from a power take-out shaft 26a of the transmission case 26 via a transmission shaft 33 with a universal joint. It has become.
[0016]
As shown in FIGS. 4 and 5, the means for attaching the mower 5 to the front link 6 and the rear link 7 connects the left and right frames 34 for mower attachment across the corresponding front link 6 and rear link 7, and the left side. The left side portion of the mower 5 is attached to the frame 34 at two front and rear points, and the right side portion of the mower 5 is similarly attached to the right frame 34 at two front and rear points. The front link 6, the rear link 7, and the frame 34 constitute a parallel quadruple link mechanism that moves the mower 5 up and down in parallel.
[0017]
By the way, as shown in FIGS. 6A and 6B, the mower 5 has different overall sizes due to the different sizes of the blades 5a. There are mowers with different specifications. In other words, for example, there are a first specification mower 5A having a large longitudinal distance L and a second specification mower 5B having a small longitudinal distance L.
[0018]
Therefore, the frame 34 is provided with mounting portions 36A and 36B corresponding to the mounted portions 35 of the mowers 5A and 5B of each specification so that the mower 5A of the first specification and the mower 5B of the second specification can be mounted. It is. Specifically, of the mounting portions 36A and 36B, the front mounting portions 36A and 36B are shared by the front mounting portions 35 of the mowers 5A and 5B of each specification, and the rear mounting portions 36A. 36B, the mounting portion 36A corresponding to the first specification mower 5A is formed at a position spaced apart from the front mounting portions 36A, 36B by a large distance LA in the frame 34, and the second specification mower 5B. The rear attachment portion 36B corresponding to is formed at a position separated from the front attachment portions 36A, 36B by a small distance LB.
[0019]
The mounted portion 35 and the mounting portions 36A and 36B are pivotally connected by a pin 37, and the pin hole 38 on the mounted portion 35 side has a mower 5 as shown in FIGS. It is formed in a long hole in the vertical direction that allows vertical movement relative to the frame 34.
The pin 37 for pivotally connecting the front mounting portions 36A and 36B and the front mounted portion 35 of the pin 37 also serves as a pin for pivotally connecting the front link 6 and the frame 34. The pin 37 for pivotally connecting the mounted portion 35 at the rear portion of the first specification mower 5A and the corresponding mounting portion 35 at the rear portion also serves as a pin for pivotally connecting the rear link 7 and the frame 34. ing.
[0020]
In the mower configured as described above, the front / rear position of the center of gravity G of the fuselage is almost the same between the case where the mower 5A of the first specification is mounted and the case where the mower 5B of the second specification is mounted. Almost equal. That is, although the second specification mower 5B is small and light in weight, it is mounted on the front side and its center of gravity is located in front of the center of gravity of the first specification mower 5A. The front-rear position of the center of gravity G of the body is almost the same when the 5A is mounted and when the second specification mower 5B is mounted.
[Brief description of the drawings]
[Fig. 1] Side view with second specification mower installed [Fig. 2] Plan view with second specification mower installed [Fig. 3] Transmission system diagram [Fig. 4] Second specification mower installed FIG. 5 is a side view of the main part when the mower of the first specification is mounted. FIG. 6 is a plan view of the main part of the link mechanism showing the difference in positional relationship due to the specification difference. ] Side cutaway side view of the main part [Fig. 8] Longitudinal front view of the main part [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Front wheel 2 Rear wheel 5 Moore 3 Airframe frame 6 Front link 7 Rear link 34 Frame 35 Mounted part L Front-rear distance 5A Moore 5B Moore 36A Mounting part 36B Mounting part

Claims (1)

The mower (5), which is arranged between the front wheel (1) and the rear wheel (2) in a side view, is swung to the fuselage frame (3) via the front link (6) and the rear link (7). It is connected so as to be movable up and down, and is configured to transmit the power from the power take-out shaft (26a) projecting forward from the transmission case (26) to the mower (5) through the transmission shaft (33). A mower is connected to a mower mounting frame (34) across the front link (6) and the rear link (7), and the frame (34) includes a front-rear distance of front and rear mounted portions (35). (L) is equipped with mounting portions (36A) (36B) corresponding to the mounting portions (35) of the mowers of each specification so that the mowers (5A) (5B) of different specifications can be mounted; (36A) Front part of (36B) The mounting part is shared between the front mounted parts (35) of the mowers (5A) (5B) of each specification, and the rear mounting part is front and back corresponding to the mowers (5A) (5B) of multiple specifications. Multiple mowers equipped .

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