JPH0110983Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a grass clippings reversing device constructed using a vertical axis rotating type grass mower.

(b) Conventional technology The conventional grass clippings reversing device configured using a small grass mower is a walk-behind tiller equipped with a grass cutting device in front of the running wheels, with a traction rake type attached to the rear hitch. It is equipped with a grass collection unit to perform grass collection work, and when grass clippings accumulate in the rake-type grass collection unit, the rake is flipped rearward and activated to release the collected grass (for example, (See Publication No. 37-5635).

(c) Problems to be solved by the invention The conventional tiller is not easy to handle because it can be used to collect grass by attaching a weed collecting section to a walk-behind tiller equipped with a mowing device on the front. However, the grass collecting section is located at the rear of the tiller, in other words, close to the driver who is following the tiller, and when the collected grass is being discharged, the rake of the grass collecting section is located close to the driver. There is a problem with this because it has a structure that flips up towards the ground, which is dangerous.Also, the grass clippings are trampled by the running wheels of the walk-behind tiller and then collected in the grass collection section, so the grass clippings become dirty. There was a problem that some grass was left behind.

The present invention was developed in view of the above-mentioned problems of the conventional technology, and its purpose is to provide a grass clippings reversing device that can be easily handled using a walk-behind mower. To provide a grass clippings reversing device capable of properly reversing and collecting grass without causing any danger to the grass clippings, soiling the clipped grass, and leaving no grass residue.

(d) Means for Solving the Problems In order to achieve the above object, the grass clippings reversing grass collecting device of the present invention has a vertically rotating cutting section with a cutting shaft 7 hanging down from the cutting drive case 6 at the front of the vehicle body A. B
is equipped, and the rotation center line O ₁ of the reaping part B is set to the vehicle body A.
The mower is configured by being positioned on the center line P-P of
A hitch 14 is installed at the front end of the vehicle body A of the mower, and a hitch 14 is installed upward from the mowing drive case 6.
A reversible grass collector C with a protruding PTO shaft and interlockingly connected to the PTO shaft is removably attached to the hitch 14, and the vehicle body A
The center of rotation _O2 of the inverted weed collecting tool C is placed on the center line P-P, or
The mowing section B is located biased toward the grass clippings discharge side, and the rotating direction of the reversing grass collection tool C and the clipping section B are made to match, and a grass clipping guide plate 13 is installed on the side of the vehicle body on the grass clippings discharge side. This is what we are doing.

(e) Operation With the grass clippings reversing device configured as described above, the grass clippings reversing operation can be performed simply by installing the reversing grass collector C in front of the cutting section of the mower on the side to which the cutting section B is attached. Get ready to implement. Therefore, the conversion from the mowing position to the grass cutting/grass collecting position and vice versa is extremely simple, and the usability of the mower can be improved and used economically.

Therefore, before the running wheels of the vehicle body step on the grass clippings, the grass clippings are collected by the grass clippings reversing tool that rotates while being biased towards the grass clipping release side of the cutting section, and at the same time, the grass clippings are collected by the grass cutting section. The grass is thrown out and assisted by the rotation of the grass, and the grass is removed along the grass cutting guiding plate 13 to the outside of the vehicle body passage area, and the grass is then reversed.

(f) Examples Examples will be described with reference to the drawings.

Fig. 1 is an overall side view of the vertical rotary type mower according to the present invention, Fig. 2 is an overall side view of the mower in an inverted position for collecting grass, and Fig. 3 is a schematic plan view of the mower shown in Fig. 2. It is a diagram.

The mower drives driving wheels 2, 2 fitted to axles 1, 1 of a transmission case by an engine 4 mounted on a frame 3, and a control handle 5 extending from the rear.
The reaping section B is attached to the reaping section at the front of the self-propelled vehicle body A, which is operated by the vehicle.

A reaping drive case 6 that receives input from the engine 4 is installed in the reaping mounting section, and a vertically rotating reaping section B is installed with a reaping shaft 7 that is vertically installed from the case 6.

The reaping shaft 7 of the reaping section B has a rotation center O ₁ that is aligned with the vehicle body A.
The cutting blade 8 is provided on the mounting body 9 fixed to the shaft 7.
At the same time, a convex spring plate 10 is installed on the upper surface of the mounting body 9 in the forward direction of the rotational direction of the cutting blade 8, and a sled body 11 is arranged at the lower part of the mounting body 9.

In addition, from the top of the reaping drive case 6,
A PTO shaft 12 is provided in a protruding manner, and a grass clipping guide plate 1 in a curved shape extends outward from the front of the cutting mounting section to the side of the vehicle body A on the grass clipping release side.
3 is provided. Then, a hitch 14 is fixed to the front part of the vehicle body in the reaping attachment part, and the connecting part 1
The entire structure including 4a is located in the inner space surrounded by the grass clipping guide plate 13, and the arm 16 holding the grounding ring 15 so as to be movable up and down can be detachably attached to the connecting part 14a. be done.

A grass mower having such a configuration is equipped with an inverted grass collection tool C as required.
All the constituent members are assembled and supported on a base body 18, which is attached by inserting and fixing 7 into the connecting portion 14a.

That is, the transmission case 19 is located at the rear end of the base body 18.
is installed on the input shaft 20 of the case so that it can be interlocked with the PTO shaft 12 via the universal joint 21, and the output shaft 2 of the transmission case is connected to the input shaft 20 of the transmission case.
A drive pulley 23 is fitted into the drive pulley 2 .

Further, a holding part 23a is installed at the front end of the base body 18, and the grounding wheel lifting mechanism is supported by the holding part 23a.

The elevating mechanism consists of an outer cylinder 24, an inner cylinder 25 that extends and contracts up and down relative to the outer cylinder 24, and a grounding ring 26 that is rotatably supported at the lower end of the inner cylinder, and the height of the grounding ring can be freely adjusted by operating the handle 27. configured to be able to do so.

Therefore, the rotation center of the ground contact wheel elevating mechanism is the rotation center _O2 of the reversing grass collection action member 32, which will be described later, and the rotation center _O2 is located on the vehicle body center line P-P. , or disposed so as to be offset by an appropriate distance L from the vehicle body center line toward the grass clippings discharge side of the cutting section.

A rotary cylinder 28 is rotatably attached to an appropriate position of the outer cylinder 24, and the rotary cylinder 28 is connected to a driven pulley 29 that rotates together with a belt 30 that is wound around both pulleys of the driving pulley 23. It is rotated in the direction of arrow A by a transmission mechanism consisting of.

Further, reversing arms 31 are attached to the rotating cylinder 28 and extending in the radial direction, and at the tip of each reversing arm 31 there is a reversing grass collecting member 32 made of a spring material.
As shown in FIG. 2, the inverted grass collecting member 32 is tilted and rotated from front to back and rear to high when viewed from the side.

Next, operational embodiments of the grass mower and reversing grass collecting device configured as described above will be described.

During grass mowing work, neither the grounding wheel 15 nor the grass clippings reversing and collecting tool C is attached. Therefore, when the reaping section B is brought into contact with the ground by the sled body 11, and the mowing blade 8 is activated and the self-propelled vehicle body A is moved forward, the roots of the planted grass stalks are cut off and they are thrown out in the direction A. They are then cut down in the field. Also, if you do not perform the reaping work,
In order to move the vehicle body A, it is sufficient to attach the grounding wheels 15 as shown in the imaginary line in FIG.

When collecting and reversing grass clippings, insert the mounting arm 17 of the grass clippings reversing tool C into the hitch connection part 14a, and connect the input shaft's universal joint 21 to the PTO
If they are fitted onto the shaft 12 and connected, they will be in a position to reverse the grass clippings and collect the grass.

Then, the elevator mechanism is operated by the handle 27, and the height of the grounding wheel 26 is appropriately adjusted so that the height of the inverted grass-collecting member 32 from the ground becomes appropriate, and the vehicle body A is moved forward while operating the reaping section B. let Then, the cutting blade 8 of the reaping section rotates in the direction of arrow A without cutting from the field scene as shown in FIG. As a result, the grass clippings in the field are flipped up in the direction (b) in FIG. It is.

When the action member 32 of the reversing grass collector C rotates in the direction of arrow A in FIG. The acting member 3 acts on the rotational reaction force of the reaping section 6.
The large rotational force combined with the reaction force of the grass clippings 2 acts as a force that causes the vehicle body A to sway laterally, but the rotation center O ₂ of the reversing grass collector C is aligned with the vehicle body center line P.
- Since the position is biased toward the grass clippings discharge side on the P, the center of gravity of the mower as a whole in the inverted grass collecting position is closer to the grass clippings discharge side, which is advantageous in absorbing the above-mentioned splashing reaction force. Even though the reversing grass collector C operates further forward of the rotating reaping unit 6, the lateral vibration of the vehicle body A can be reduced, allowing the work to proceed in a straight line and with good stability. It can be done.

In addition, some of the grass clippings that are pulled and moved by the action member 32 may not be easily separated from the action member 32 and may not be released in the intended release direction, causing a delay in the grass clippings. Also, by the assisting action of the rotation of the reaping part B, the grass can be properly discharged to the outside of the vehicle body as shown in FIG. be.

(g) Effects of the invention Since the present invention is configured as explained above, it produces the effects described below.

The front part of the vehicle body A is equipped with the cutting section B, and on the same side as the rear side, there is a vertically rotating type of grass clippings reversing grass collecting device C to create a grass clippings reversing position, so the driver follows the rear of the machine on foot. The can be operated with confidence in a comfortable posture facing forward in the direction of travel, and because the grass clippings reversing and collecting tool and the cutting section are installed on the same side, the machine uses the drive system of the cutting section to create a simple and compact transmission. The mechanism can forcibly drive the grass clippings reversing tool, making the whole machine more compact.

The grass clippings are processed in the front by the drive wheels through the joint action of the grass clippings reversing and collecting tool that rotates in the same direction and the cutting section, and are discharged to the outside of the vehicle body along the grass clipping guide plate 13, thereby improving the separation of grass clippings. At the same time, it can be processed well without any dirt or grass residue.

In addition, the grass clippings reversing grass collector is installed with its center of rotation on the vehicle body center line or closer to the grass clippings release side, which reduces the vibration of the vehicle body due to the reaction force when reversing grass clippings and allows the vehicle to move straight. As sex improves, it becomes more convenient.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of the vertical shaft rotary type mower according to the present invention, Fig. 2 is an overall side view of the mower in an inverted grass-collecting position, and Fig. 3 is a schematic plan view of the mower shown in Fig. 2. FIG. 4 is an enlarged plan view of a part of FIG. 3. A...Vehicle body, B...Vertical axis rotation type reaping section, C...
Reversing grass collector, O ₁ , O ₂ ...Rotation center, P-P...
Vehicle center line.

Claims (1)

[Scope of utility model registration request] The reaping shaft 7 hanging down from the reaping drive case 6 at the front of the vehicle body A is equipped with a vertically rotating reaping section B, and the rotation center _O1 of the reaping section B is positioned on the center line PP of the vehicle body A. A lawn mower is constructed, and a hitch 14 is installed at the front end of the vehicle body A of the lawn mower, and a PTO shaft is provided upwardly protruding from the mowing drive case 6.
The reaping part B is installed in front of the vehicle body A by removably attaching the reversing grass collection tool C connected to the shaft to the hitch 14.
The center of rotation O ₂ of the reversing grass collector C is located on the center line PP or on the grass clipping release side of the cutting section B, and the reversing grass collecting tool C and the cutting section are positioned side by side. This grass clippings reversing device for a vertical shaft rotary type mower is characterized in that the directions of rotation of the mowers B are made to coincide with each other, and a grass clippings guide plate 13 is installed on the side of the vehicle body on the grass clippings discharge side.