JPH0880118A - Self-traveling mower - Google Patents

Abstract

PURPOSE: To provide a lightweight and small-sized self-traveling mower capable of movably fixing either one wheel so as to smoothly and automatically eliminate reaped weeds behind the machine body and rapidly fit to configuration of the ground of grass-reaped site. CONSTITUTION: This self-traveling type mower is obtained by erecting a rotating cylinder 19 internally installing a one-way rotating mechanism rotating in clockwise direction on the front side of a reaping case (b) and one side of the base end side of a blade plate-receiving bridge 17, erecting a backward feed guide plate 21 in obliquely provided state to longitudinal direction on the reaping case (b) between the rotating cylinder 19 and a supporting cylinder 20 of a driving shaft erected in the rear end of the reaping case (b), and swingably instal ling a reciprocating and oscillating lever operating the one-way rotating mechanism of the rotating cylinder 19 in a proper place of a power transmitting mechanism in the reaping case (b).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled mower capable of cutting weeds on a ridge.

[0002]

2. Description of the Related Art The applicant made efforts to develop and research a self-propelled mower that can reliably mow even in a narrow space such as a ridge, and Japanese Patent Laid-Open No. 5-68419.
No., Japanese Patent Application No. 5-184130, etc. have been tested, but the weight of the drive transmission structure that reciprocates the upper and lower grass cutting blades is heavy and its operation is still unsatisfactory,
The present invention has been completed by further researching, researching a transmission drive mechanism that is lighter and more reliable in operation, and further researching a structure that enables smooth removal of cut weeds and single-wheel traveling.

[0003]

The gist of the present invention will be described with reference to the accompanying drawings.

A drive shaft 2 which is driven and rotated by a main shaft 1 suspended from a mowing machine body a is vertically installed in a mowing case b, and a cam shaft 5 in which two cam plates 3 and 4 are vertically arranged on the drive shaft 2.
Are rotatably arranged side by side by a gear transmission mechanism c, and crank arms 6.7 in which slide arms 8 and 9 are connected to the cam plates 3 and 4 are provided, and the tip portions 8 ′ and 9 of the slide arms 8 and 9 are provided. Oscillating arm 11 with fulcrum shaft 10 on the L-shaped corner
The base end of 12 is pivotally attached, and the swinging tip of this swinging arm 11 ・ 12
11 'and 12' are projectingly provided in front of the mowing case b, and the swinging tip portions 11 'and 12' are connected to the upper and lower mowing blade plates 13 and 14 in a pivotally attached state so that they can be swung. According to a self-propelled mower, wherein the grass cutting blade plates 13 and 14 are reciprocally movable left and right on a lower surface of a blade plate receiving bar 17 supported by support arms 15 and 16 protruding left and right of the front side of the case b. It is a thing.

Further, the blade plate receiving bar is provided on the front side of the mowing case b.
A rotation cylinder 19 having a one-way rotation mechanism that rotates clockwise is installed upright on one side of the base end side of 17, and the rotation shaft 19 and the drive shaft 2 supported on the rear end of the mowing case b. The reciprocating rocking rod 22 for activating the one-way rotation mechanism of the rotary cylinder 19 is provided on the grass cutting case b between the cylinder 20 and the rear guide plate 21 so as to be inclined with respect to the front-rear direction. The present invention relates to a self-propelled mower, which is swingably disposed in a proper position of a power transmission mechanism d in b.

Also, one wheel 25 of the left and right wheels 24, 25 is formed by extending one end of the wheel shaft 23 of the mower body a laterally to form a protruding end 23 'and fixed at a predetermined left and right position. The present invention relates to a self-propelled mower, which is provided with a moving and fixing mechanism e capable of moving and fixing the above to a proper place on the outside.

[0007]

The camshaft 5 is rotated by the gear transmission mechanism c arranged between the drive shaft 2 and the camshaft 5, and the two cam plates 3 and 4 provided on the camshaft 5 cause the crank arms 6.7, The swinging arms 11 and 12 are reciprocally swung with respect to the fulcrum shaft 10 via the slide arms 8 and 9, and swinging tip portions 11 'and 12 of the swinging arms 11 and 12 projecting out of the mowing case b. 'The grass cutting blades respectively
Since it is pivotally connected to 13/14 so that it can be swung, it is possible to reciprocate the blades 13/14 placed on the lower surface of the blade receiving bar 17 by a straight line left / right movement. Enable operation.

Further, a reciprocating rocking rod 22 is provided at an appropriate position of the power transmission mechanism d arranged in the mowing case b, and a rotary cylinder is provided through a one-way rotating mechanism installed by the rocking of the reciprocating rocking rod 22. 19
Since weeds are rotated in one direction in the clockwise direction, weeds that have been cut are connected to the rotary cylinder 19 by the forward movement of the mowing machine a and the rotation of the rotary cylinder 19 that tries to send the weeds rearward. The weeds will be forcibly sent to the plate 21, and the weeds will be sequentially removed along the rear guide plate 21 rearward.

Further, a projecting end 23 'whose one end is elongated
One wheel 25 is shifted to and fixed by the moving fixing mechanism e, the handle 26 of the mowing machine body a is lifted and the one side of the mowing machine body is lifted to run in a skewed state, and the wheel 25 is positioned on the edge of the unicycle. When run as, the weeds on the ridge shoulders and ridge slopes will be cut well.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show three embodiments of the present invention.
1, 2 and 3 show the first embodiment, FIGS. 4 and 5 show the second embodiment, and FIG. 6 shows the third embodiment.

In the construction of the first embodiment according to claim 1, a drive shaft 2 which is driven and rotated by a main shaft 1 suspended from a mowing machine body a is vertically installed in a mowing case b, and two drive shafts 2 are provided on the drive shaft 2. The cam shaft 5 with the cam plates 3 and 4 arranged vertically is connected to the gear transmission mechanism c.
Crank arms 6 and 7 in which slide arms 8 and 9 are continuously provided on the cam plates 3 and 4
The base ends of swinging arms 11 and 12 in which fulcrum shafts 10 are arranged at the L-shaped corners are pivotally attached to the tip portions 8 ′ and 9 ′ of the slide arms 8 and 9,
The swinging tips 11 'and 12' of the swinging arms 11 and 12 are projectingly provided in front of the mowing case b, and the swinging tips 11 'and 12' swing to the upper and lower mowing blade plates 13 and 14. Connected in a pivoted state that enables
A self-propelled mower characterized in that the grass cutting blade plates 13 and 14 are reciprocally movable to the left and right on the lower surface of a blade plate receiving bar 17 supported by support arms 15 and 16 projecting from the front and right sides of the grass cutting case b. It is related.

In the figure, reference numeral 26 is a steering handle, 27 is a steering device, 28 is an engine, and 29 is a cam shaft 5 which is rotated by the rotation of the cam shaft 5.
A guide shaft with a guide roller 31 for converting the eccentric rotational movement of the cam plates 3 and 4 fixed to the back and forth into horizontal reciprocating movements of the slide arms 8 and 9, and 30 is a long slide window for guiding the slide arms 8 and 9. , 32 is a countersunk bolt for fixing the blade plate receiving bar 17 to the lower surface of the tips of the support arms 15 and 16, 33 is the swing tip 11 'and 12' of the upper and lower swing arms 11 and 12, and the upper and lower grass cutting blades. 13
・ A pin shaft for connecting the connecting projections 13 ′ and 14 ′ projecting to the rear of 14 to the connecting shaft, 34 is the upper grass cutting blade plate 13 against the lower surface of the blade plate receiving bar 17, and the upper grass cutting blade plate 13 To the lower cutting blade plate 14 so as to be able to slide the left and right sides to each other so that an appropriate gap is maintained, 35 and 36 are cutting blade plate tightening bolts for the upper and lower mowing blade plates 13 and 14, respectively. Each of the 34 bolt holes is a bolt hole formed by extending the bolt hole to the left and right by a predetermined length.
・ 12 is converted to reciprocating rotary motion around the fulcrum shaft 10, and this power transmission mechanism d causes the swinging tip 1 of the swinging arms 11 and 12.
It is a slide long hole for performing grass cutting work by reciprocating 1 '・ 12' left and right at a predetermined angle and horizontally moving the upper and lower grass cutting blade plates 13 and 14 using the cutting blade tightening bolts 34 as guides.

Further, 37 is a coupling for distributing the rotational power of the engine 28 and transmitting the power of the rotating main shaft 1 to the drive shaft 2, 38 is a connecting bolt for connecting the connecting bolt 38 to the side wall below the support cylinder 20. A split circle portion 39 having a semi-cylindrical cross-section that engages with the outer diameter is provided, and the split circle portion 39 is set on the protruding upper wall of the mowing case b facing the split circle portion 39 to form the outer diameter of the connecting bolt 38 A bow-shaped recess 40 for engagement is provided, and when the projecting upper part of the mowing case b is fitted into the support cylinder 20, the connecting bolt 38 is inserted into the split circle portion 39 and the bow-recess 40 to form the support cylinder 20. Mowing case b
Is fixed, the connecting bolt 38 is pulled out, and the grass cutting mace b is provided from the support cylinder 20 so that it can be released with one touch.

The structure of the second embodiment according to claim 2 is a rotary cylinder in which a one-way rotating mechanism for rotating clockwise is provided in front of the mowing case b and on one side of the base end side of the blade plate receiving bar 17. 19 is erected, and a rear feed guide plate 21 is obliquely installed in the front-back direction on the mowing case b between the rotary cylinder 19 and the support cylinder 20 of the drive shaft 2 erected at the rear end of the mowing case b. Standing upright, rotating cylinder 19
The self-propelled mower is characterized in that a reciprocating rocking rod 22 for activating the one-way rotation mechanism is swingably arranged at an appropriate position of the power transmission mechanism d in the grass cutting case b.

In the figure, reference numeral 42 designates a rotary shaft which is erected via bearings 41, 41 on a mounting plate projecting to the left of the support arm 15, and 43 designates an upper portion of the rotary shaft 42 which constitutes a one-way rotating mechanism. A one-way clutch such as a needle roller type clutch or a ratchet type clutch attached to the lower part, 44 is a rotary lever fixed to the lower end of the rotary shaft 42, and the protruding tip end of this rotary lever 44 is reciprocally rocked by a rod 20. The swing arm 12 is connected in the middle of the arm, and the left and right reciprocating rotation of the swing arm 12 of the power transmission mechanism d around the fulcrum shaft 10 is moved by the reciprocating swing rod 20 around the bearings 41, 41 of the rotary shaft 42. This is converted into an inching rotational movement, and this inclining rotational movement is rotated by the one-way clutch 43 in the clockwise direction of the rotational barrel 19 having the surface knurled.

In the structure of the third embodiment according to claim 3, a protruding end 23 'is formed by laterally extending one end of the wheel shaft 23 of the mower body a and is fixed at a predetermined left and right position. Left and right wheels 2
The present invention relates to a self-propelled mower, which is provided with a moving and fixing mechanism e capable of moving and fixing one of the wheels 25 of 4 and 24 to a proper position on the outside.

Reference numeral 46 in the drawing denotes a fixing bolt, which is used for the left wheel 24.
Fixing bolt 46 is screwed into a tapped hole formed in a wheel hub 47 that is pivotally attached to the wheel shaft 23, and the tip of the fixing bolt 46 is attached to the wheel hub 47.
Is fixed to the wheel shaft 23 by a moving fixing mechanism e.
Is loosened to release the fixation between the wheel hub 47 and the wheel shaft 23, one wheel 24 is moved to a proper position on the outer side, and is fixed with a fastening bolt 46.

[0018]

【The invention's effect】

(Invention of Claim 1) Since the present invention is configured as described above, a self-propelled mower capable of performing a precise power transmission structure for performing a mowing operation, performing the operation accurately, being light in weight, and being small in size can be provided. Become.

(Invention of Claim 2) The weeds cut off are:
The self-propelled mower is excellent in workability because it is forcibly fed to the front surface of the rear guide plate by one-way rotation of the rotary cylinder and is smoothly removed to the rear of the mower body by the rear guide plate.

(Invention of claim 3) When the position of the wheel on one side is adjusted and shifted to the outside, one side of the mower body is lifted and the ridge is slanted as a unicycle to advance weeds on the ridge shoulder and ridge slope. It also becomes a self-propelled mower that can be properly harvested.

[Brief description of drawings]

FIG. 1 is a perspective view showing the overall configuration of this embodiment.

FIG. 2 is a partially cutaway side view showing a main part of the first embodiment of the present invention.

FIG. 3 is a plan view in which a part of the above is cut away.

FIG. 4 is a plan view of a second embodiment of the present invention.

FIG. 5 is a side sectional view of the above-mentioned main part.

FIG. 6 is an explanatory front view showing a main part of a third embodiment of the present invention.

[Explanation of symbols]

 1 main shaft 2 drive shaft 3/4 cam plate 5 cam shaft 6.7 crank arm 8.9 slide arm 8 '・ 9' tip part 10 fulcrum shaft 11 ・ 12 swing arm 11 '・ 12' swing tip part 13 ・14 Mowing blade plate 15 ・ 16 Support arm 17 Blade plate receiving bar 19 Rotating cylinder 20 Supporting cylinder 21 Rear guide plate 22 Reciprocating rocking rod 23 Wheel shaft 23 'Projecting end 24/25 Left and right wheels a Mowing machine body b Mowing case c Gear transmission Mechanism d Power transmission mechanism e Moving and fixing mechanism

Claims (3)

[Claims] 1. A drive shaft, which is driven and rotated by a main shaft vertically mounted on a mowing machine body, is vertically installed in a mowing case, and a cam shaft having two cam plates vertically arranged on the drive shaft is rotatable by a gear transmission mechanism. A crank arm in which a slide arm is continuously provided on the cam plate, and the base end of a swing arm having a fulcrum shaft at an L-shaped corner is attached to the tip of the slide arm. The oscillating tip of the moving arm is projected in front of the mowing case, and the oscillating tip is connected to the upper and lower mowing blades in a pivoted state so that it can be oscillated. A self-propelled mower, wherein the grass cutting blade plate is provided on the lower surface of a blade plate receiving bar supported by the supporting arm so as to be reciprocally movable from side to side. 2. A rotary cylinder in which a one-way rotating mechanism for rotating in a clockwise direction is installed is provided upright on the front side of the blade plate receiving bar on the front side of the mowing case, and the rotary cylinder and the rear of the mowing case are provided. A reciprocating swing that operates the one-way rotation mechanism of the rotary cylinder by setting the post-feed guide plate upright on the mowing case between the support shaft of the drive shaft installed upright at the end in the longitudinal direction. A self-propelled mower in which a rod is swingably arranged in an appropriate position of a power transmission mechanism in a mowing case. 3. A protruding end is formed by laterally extending one end of a wheel shaft of the mower body, and one of the left and right wheels fixed at a predetermined left and right position is moved to a proper position outside. A self-propelled mower characterized by having a movable fixing mechanism capable of fixing.