JPH0739225A - Self-propelled grass cutter - Google Patents

Abstract

PURPOSE:To obtain a self-propelled grass cutter enabling the adjustment of the angle of a grass-cutting blade of a cutting blade driving apparatus at the hand of an operator. CONSTITUTION:A machine body (a) mounting a traveling engine 1 is provided with a driving wheel 2 and a steering apparatus 3. A turning shaft driven by the power of the traveling engine 1 is protruded from the front end of the machine body (a) and the base part of a turning case 5 is attached in a state to turn in the normal and reverse directions by a turning apparatus relative to the axis of the turning shaft. A fixing apparatus 9 to fix a connection cylinder 8 at selected turning angle is protruded from the front face at the tip end of the turning case 5. A supporting cylinder 11 is perpendicularly attached to the connection cylinder 8 and a cutting blade driving apparatus is horizontally attached to the supporting cylinder 11. The turning apparatus is driven by a reduction gear motor 13 and the steering apparatus 3 is provided with the switching operation part 14 of the reduction gear motor 13 and the operation part 15 to fix or release the fixing apparatus 9.

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.

[0002]

2. Description of the Related Art The applicant developed the self-propelled mower previously filed as Japanese Patent Application No. 3-235166, made a prototype, and repeated tests, and as a result, If the rotational power source of the rotational case 5 that rotates forward and backward is separated from the traveling engine 1 mounted on the machine body a, it cannot be rotated when the traveling engine 1 is not operating, and It was confirmed that the power distribution and transmission mechanism was complicated and the cost was high.

Further, the rotation of the rotating case 5 and the rotation of the connecting tube 8 with respect to the rotating case 5 must be made operable by the driver at the control device 3, respectively. I also confirmed that it was not an opportunity.

The present invention provides a self-propelled mower that solves these drawbacks.

[0005]

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

[0006] Traveling wheels 2 and a control device 3 are provided on a machine body A equipped with a travel engine 1, and a rotating shaft 4 which is rotated by power from the travel engine 1 is provided in a horizontal direction at a front portion of the machine body A. The base of the rotating case 5 is attached to the axis of the rotating shaft 4 so as to be able to rotate in the forward and reverse directions, and a rotating device 6 for rotating the rotating case 5 in the forward and reverse directions is provided. 5, a connecting tube 8 horizontally protruding from the front surface of the front end portion of the connecting tube 8 is rotatably provided with respect to the axis of the driven shaft 26 to which the rotation of the rotating shaft 4 is transmitted. A fixing device 9 for fixing a rotation angle to the tip of the case 5 is provided, and a supporting cylinder 11 of the cutting blade drive shaft 10 is vertically provided at the tip of the connecting cylinder 8 at a right angle.
A cutting blade drive device 12 is attached to the lower end of the device in a horizontal state, and a deceleration motor 13 with a battery for operating the rotating device 6 is provided in the machine body a. A switch operating portion 14 of the deceleration motor 13 and
The present invention relates to a mower, wherein the control device 3 is provided with an operating portion 15 for releasing and fixing the fixing device 9, respectively.

[0007]

A description will be given of a case where the running engine 1 is started and the control device 3 is operated to transmit power to the traveling wheels 2 by a conventional clutch operation to mow the ridge while traveling on the ridge, for example.

First, the case of mowing the upper surface of the ridge will be described with reference to FIG.

When the operating device 15 is operated to release the fixing device 9 for fixing the base of the connecting cylinder 8 and the tip of the rotating case 5 and the switch operating device 14 is turned on, the rotating device 6 is driven by the deceleration motor 13. Is operated and the rotating case 5 is rotated with respect to the axis of the rotating shaft 4.
The tip of the turns. At this time, support cylinder 11, cutting blade drive device
12 is hung on the tip of the turning case 5 by its own weight and moves with the turning of the tip of the turning case 5 while maintaining a substantially vertical state, and the tip of the turning case 5 with respect to the machine body a. At the position where the cutting blade of the cutting blade drive device 12 horizontally comes into contact with the upper surface of the ridge, the switch operating portion 14 is turned off and the rotation of the rotating case 5 is stopped. By operating the operating portion 15, the connecting device 8 is fixed by the fixing device 9.
The base part of the and the tip part of the rotating case 5 are fixed.

By operating the switch operating section 14, the height of the cutting blade of the cutting blade drive device 12 with respect to the upper surface of the ridge and the position of the cutting blade on the left and right with respect to the ridge surface are adjusted, and by operating the operating section 15, the rotating case 5 is moved. The inclination angle of the mowing blade is set by selecting the rotation angle with respect to the base portion of the connecting tube 8 with respect to the tip portion.

In this state, the self-propelled mower is moved forward, and the mowing blade of the mowing blade driving device 12 mows the upper surface of the ridge.

Next, the case of mowing the left slope of the ridge will be described with reference to FIG.

In the state shown in FIG. 8 for mowing the upper surface of the ridge, the operating portion 15 is operated in the same manner as described above to release the fixing mechanism 9 for fixing the connecting tube 8 and the rotating case 5, and the switch operating portion. 14 is turned on, and the tip end of the turning case 5 is turned downward to the upper left as shown in FIG. 9 by the turning device 6 so that the grass cutting blade of the cutting blade driving device 12 is pressed and brought into contact with the left slope of the ridge. At that position, the switch operating portion 14 is turned off to stop the rotation of the rotating case 5, and the operating portion 15 is operated to fix the connecting cylinder 8 and the rotating case 5 by the fixing mechanism 9, and the same as above. Then, the self-propelled mower is moved forward, and the grass on the left side of the ridge is mowed by the grass cutting blade of the cutting blade drive device 12.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The drawings illustrate a preferred embodiment of the present invention.

A traveling wheel 2 and a control device 3 are provided on an airframe a equipped with a drive engine 1, a control handle 16 is provided on the control device 3, and the power from the drive engine 1 is cut off to the control handle 16. An on-coming clutch lever 17 and an accelerator lever 18 for adjusting the rotation of the traveling engine 1 are provided.

The running engine 1 is provided with a power distribution device 19 having a rotary shaft 4 projecting forward through a clutch mechanism, and a flange type support cylinder 20 is fixed to the front end of the power distribution device 19. The bearing tube 7 is fitted in the tubular portion of the flange type support tube 20 so that the bearing tube 7 is rotatable with respect to the flange type support tube 20 so as not to move laterally, and a rotating case is provided at the front end of the bearing tube 7. The worm wheel 21 is attached to the outer periphery of the bearing cylinder 7 as the turning device 6 by fixing the base of the worm wheel 21.
A worm 22 that meshes with is attached to the machine body a. A drive pulley 23 is provided in the rotary case 5, and the protruding end of the rotary shaft 4 is fitted and fixed to the drive pulley 23, and the rotary case 5 is fitted in the case at the tip of the rotary case 5. A driven shaft 26 held by the mounted bearing is provided, and a driven pulley 24 is fitted and fixed to the driven shaft 26, and a drive belt is provided between the drive pulley 23 and the driven pulley 24.
Cross over 25. Reference numeral 27 in the drawing is a tension pulley on which the drive belt 25 is stretched.

A battery 28 is provided near the rear of the machine body a,
A deceleration motor 13 with a worm deceleration mechanism that is rotated by the battery 28 is attached to the upper part of the machine body a.
The output shaft of 13 and the input shaft end of the worm 22 are connected by a coupling so that the rotational power of the reduction motor 13 is transmitted to the worm wheel 21 by a worm gear mechanism so that the tip of the rotating case 5 is a flange type support cylinder. It can be rotated forward and backward with respect to 20.

The front face of the front end of the rotating case 5 is projected forward to form a connecting fitting cylinder 5 ', and the base of the connecting cylinder 8 is fitted into the connecting fitting cylinder 5'and the connecting cylinder 8 is connected. A bevel gear box 29 is integrally provided with the connecting cylinder 8 at the front end portion of the connecting cylinder 8 so as to be rotatable with respect to 5 ′ so as not to move to the left and right. A fixed rotating cylinder 30 is fitted on the outer circumference of the connecting fitting cylinder 5'and the outer circumference of the fitting cylinder portion 8'of the connecting cylinder 8, and a plurality of fastening bolts 31 are provided on the outer circumference of the fixed rotating cylinder 30 near the front. Securely attach to the connecting cylinder 8 and rotate the cylinder 30
And a flange portion 30 'is provided at the base of the fixed rotating cylinder 30, and a plurality of engaging holes 32 are formed in the flange portion 30' at appropriate intervals, and the tip portion of the rotating case 5 is formed. An engaging pin tube 34 having an engaging pin 33 fitted into the engaging hole 32 is provided on the lower surface of the connecting pin 8, and the connecting tube 8 is rotated to make the tip of the engaging pin 33 into the engaging hole 32 having a desired angle. The connecting cylinder 8 is provided so as to be adjusted and fixed at a desired angle with respect to the rotating case 5 by being elastically fitted.

A bevel gear 36 is fixed to the protruding front end of the driven shaft 26, an upper support fitting cylinder 37 is fixed to the lower end of the bevel gear box 29, and the lower end is vertically hung downward. The upper support cylinder 38 is fitted into the fitting cylinder 37 so that the upper support cylinder 38 is horizontally rotatable with respect to the upper supporting cylinder fitting cylinder 37 and is vertically immovable. The upper end of the upper supporting cylinder 38 is provided with a flange 38 ′. And a plurality of engaging holes 39 at appropriate intervals in the collar portion 38 ', and the bevel gear box 29
The engaging portion 40 is provided at the lower end of the engaging hole 40, and the engaging hole 39 is formed in the engaging portion 40.
An engagement pin cylinder 42 having an engagement pin 41 fitted therein is provided,
The tip of the handle 43 is attached to the head of the engaging pin 41, and the upper support cylinder 38 is rotated to push the handle 43 of the engaging pin 41 downward to engage the lower end of the engaging pin 41. The upper support cylinder 38 is provided so as to be adjusted and fixed to the connecting cylinder 8 at a desired angle by being elastically fitted into the hole 39.

A bevel gear 36 'meshing with the bevel gear 36 is provided in the bevel gear box 29, the base of the upper cutting blade drive shaft 45 is fixed to the bevel gear 36', and the other end is hung vertically downward. At the bottom of it is a connector 46
Attach.

A lower support cylinder 47 which is detachably fitted into the lower portion of the upper support cylinder 38 is provided, and a lower cutting blade drive shaft 48 held by a bearing is attached to the inside of the lower support cylinder 47. With the upper end of the shaft 48 connected to the connecting member 46, the lower support cylinder 47 is fixed to the upper support cylinder 38 by the link mechanism of the fixing lever 49, and the cutting blade drive device 12 is attached to the lower end of the lower support cylinder 47. The pinion gear is attached to the lower end of the lower cutting blade drive shaft 48.
Fasten 50.

The illustrated cutting blade drive device 12 will be described in detail.

The upper and lower ends of the crankshaft 52 are held by bearings 54, 54 fitted in the drive case 53, and a crank gear 55 meshed with the pinion gear 50 on the shaft portion near the upper bearing 54.
The eccentric discs are attached to the crankshaft 52 between the crank gear 55 and the lower bearing 54 while maintaining a phase of 180 degrees, and each of the eccentric discs has a connecting rod shape. The cutting blades are attached to the large ends of the connecting rods 56 and 57, and the small ends of the other ends project rightward, and are held by two pairs of bearings above and below the right side inside the drive case 53. The connecting shaft 58 and the cutting blade drive shaft 59 are vertically arranged in series vertically with their base edges at a predetermined interval, and the bases of the crank arms 60 and 61 of the same shape are fixed to the base ends of the shafts. The tip is axially attached to the small end of the connecting rod 56/57,
Secure the base of the lever 62 to the upper shaft end of the cutting blade connecting shaft 58,
A lever of the same shape as the lever 62 at the upper end of the cutting blade drive shaft 65, which is held by bearings vertically arranged at a predetermined interval in the drive case 53 to the right of the cutting blade connecting shaft 58 and the cutting blade drive shaft 59. Fasten the base of 63 and connect the connecting lever 64 to the tip of this lever 62 ・ 63.
The cutting blade drive shafts 65 and 59 are provided with a spline or a selection male portion at the lower end thereof, and the lever-shaped cutting blade drive arms 66 and 67 have a spline or selection female portion shape at the lower end thereof. Fit the base and secure it.

Two cutting blade holding arms 68 are provided on the lower surface of the drive case 53.
・ 69 left and right side projections are juxtaposed in parallel to each other at a predetermined interval, and a cutting blade support bar 70 is horizontally installed at the tip of this cutting blade holding arm 68 ・ 69 and fixed with a countersunk bolt 71. An upper blade with a plurality of cutting blades 72 protruding from the front side of the support bar 70 for cutting grass forward
73 and a lower blade 74 having a plurality of cutting blades 72 projecting from the lower surface of the upper blade 74 are provided in a superposed state.
The connecting projections 73 'and 74' are integrally formed on the 74 toward the rear, respectively, and the U-shapes are provided on the connecting projections 73 'and 74' and the tips of the cutting blade drive arms 66 and 67. The cutting blade support bars 70, the upper blades 73, and the lower blades 74, which are attached to the groove portions 66 ′ / 67 ′ of the
With several cutting blade tightening bolts 76,
The upper blade 73 and the lower blade 74 are engaged and fixed with a proper gap therebetween so that the lower blade 74 can slide left and right relative to each other, and the upper blade 73 is slidably locked by the cutting blade fastening bolt 76. Each bolt hole of the blade 73 is extended leftward by a predetermined length to form a bolt elongated hole 73 ″, and each bolt hole of the lower blade 74 is extended to the right of each bolt hole to form a bolt elongated hole 74 ″.

A switch operating portion 14 for rotating the deceleration motor 13 in the forward and reverse directions and stopping the rotation of the deceleration motor 13 is attached near the clutch lever 17 of the control device 3, and a connecting rod is hung between the bases of the left and right control handles 16. The connecting rod is provided with a gripping lever 78 for a fixing device, the base portion of the push type cable 79 is fixed to the gripping lever 78 for a fixing device, and the tip of the connecting tube 8 is attached to the rotating case 5 at a desired angle. Engagement pin for adjusting and fixing to
It is connected to the base end of 33, and the lever of the gripping lever 78 for the fixing device is gripped to fix the tip of the engaging pin 33 to the engaging hole 32 of the fixed rotating cylinder 30.
Provide it so that it will come out more.

Since this embodiment is constructed as described above, the following operational effects are obtained.

For convenience of explanation, the operation at the time of shifting from the case of mowing the upper surface of the ridge in FIG. 8 to the case of mowing the left slope of the ridge in FIG. 9 will be described.

The gripping lever 78 for the fixing device of the operating portion 15 is gripped and the tip of the engaging pin 33 is pulled out from the engaging hole 32 of the fixed rotating cylinder 30, and the base of the connecting cylinder 8 and the rotating case 5 are separated. Release the fixation with the tip and turn on the reverse rotation switch of the switch operation unit 14.
Then, the worm gear 22 is rotated counterclockwise by the reduction motor 13 with the worm reduction mechanism, and the tip of the rotation case 5 is rotated counterclockwise about the flange type support cylinder 20. At this time, the support cylinder 11 and the cutting blade drive device 12 move with the rotation of the tip portion of the rotation case 5 while keeping the vertical state of being suspended from the tip portion of the rotation case 5 due to its own weight, and the rotation thereof The position where the front end of the moving case 5 pivots and descends diagonally to the upper left position from the horizontal center of the flange type support cylinder 20 and presses the upper blade 73 and the lower blade 74 of the cutting blade drive device 12 against the left slope of the ridge. Then, the rotation stop switch of the switch operating portion 14 is turned on to stop the rotation of the deceleration motor 13, the grip of the lever of the fixing device 78 is released, and the engagement pin 33 is elastically fitted into the engagement hole 32 to continuously connect the continuous cylinder. 8 is fixed to the rotating case 5 at that position.

The operation of the cutting blade drive device 12 will be described.

Power from the traveling engine 1 is applied to the rotary shaft 4,
The drive pulley 23, the driven pulley 24, the driven shaft 26, the bevel gear 36, the bevel gear 36 ', the upper cutting blade drive shaft 45, the connector 46, and the lower cutting blade drive shaft 48 are transmitted to the pinion gear 50, The crankshaft 52 is rotated by a crank gear 55 that meshes with the crankshaft 52, and the large ends of the connecting rods 56 and 57 are rotated by the two eccentric discs provided on the crankshaft 52 that maintain a phase of 180 degrees to connect the connecting rod 56.・ 57
Since the small end portion of the other end is converted into a reciprocating linear motion having a stroke equivalent to the eccentric amount of the eccentric disc, the cutting blade connecting shaft 58 is linked to this motion by the link mechanism of the crank arm 60 to form a predetermined angle. To reciprocate left and right with lever 62, connecting lever 64,
The cutting mechanism drive shaft 65 reciprocates left and right at a predetermined angle by the link mechanism of the lever 63, and at the same time maintains a 180 degree phase with this movement, the cutting mechanism drive shaft 59 moves at a predetermined angle by the link mechanism of the crank arm 61. Reciprocating left and right, cutting blade drive shaft 65
At the same time as the upper blade 73 axially attached to the tip of the cutting blade drive arm 66 fixed to the slide blade slides to the right along the lower surface of the cutting blade support bar 70 using the cutting blade tightening bolt 76 as a guide, The lower blade 74, which is pivotally attached to the cutting blade drive arm 67 of 59, slides leftward along the lower surface of the upper blade 73 using the cutting blade tightening bolt 76 as a guide, and the cutting blade 72 of the upper blade 73 and the lower cutting blade 72 are moved downward. The grass is mowed with the cutting blade 72 of the blade 74, and this operation is the reverse operation in which the upper blade 73 moves to the left and the lower blade 74 moves to the right by the rotation of the crankshaft 52. Repeating the operation, the upper blade 7 moves as the machine body a advances.
3. Mow the grass on the ground with the cutting blades 72, 72 of the lower blade 74, respectively.

According to the present invention, the gripping lever 78 for the fixing device and the switch operating portion 14 are provided in the control unit 3 and the gripping lever 78 for the fixing device is operated to operate the base of the connecting tube 8 and the rotating case 5. Select the rotation angle with the tip and fix it, and then switch
Since the base 14 of the drive case 5 is fixed to the rotary shaft 4 by the deceleration motor 13 with the worm speed reducing mechanism by operating 14 so as to be movable in forward and reverse directions, the upper blade 73 of the cutting blade drive device 12, Since the angle of the lower blade 74 with respect to the ridge surface can be adjusted to a desired angle by manually operating the control device 3, a member for fixing the rotation angle of the connecting cylinder 8 and the rotation case 5 as in the conventional case. The dowel pin 33 is operated with the hand extended, or the turning device 6 of the worm gear mechanism capable of turning and fixing the base of the drive case 5 with respect to the turning shaft 4 is manually turned, or the running engine 1 is used.
Since the complicated power distribution transmission mechanism for rotating the rotating device 6 by utilizing the power of is eliminated, the structure is simplified, and even if the traveling engine 1 is not operated, the cutting blade can be cut against the ridge surface. The angle can be adjusted to the desired angle.

Further, since the rotating device 6 is constituted by the worm mechanism of the worm wheel 21 and the worm 22, and the reduction motor 13 is formed by the reduction motor 13 with the worm reduction mechanism, the structure is simple and the reduction ratio is large. Since the rotation of the tip portion of the rotating case 5 can be relatively slowed since it can be taken, the upper blade 73 and the lower blade 74 with respect to the ridge surface can be compared with the conventional case.
Not only is it extremely easy to adjust the angle, but the worm / worm wheel of the worm gear mechanism has a small twist angle, and since two sets of worm gear mechanisms are used as the turning device 5, rotation due to vibration etc. The moving case 5 hardly rotates around the machine body a.

Further, since the upper support cylinder 38 is pivoted to the left and right with respect to the lower portion of the bevel gear box 29 so that both can be fixed by the locking pin 41, the movement of the self-propelled mower is advanced. The horizontal inclination angle of the upper blade 73 and the lower blade 74 with respect to the direction can be adjusted to a desired angle according to the actual work by rotating the upper support cylinder 38.

In the present embodiment, the cutting blade drive device 12 is attached to a two-wheeled vehicle, but it can be attached to a tracked vehicle or a one-wheeled vehicle.

At the protruding end of the cutting blade support bar 70, a grounding bar 80 is projected rearward in parallel with the machine body a, and the end of the grounding bar 80 is inclined so as to be grounded and dragged during horizontal grass cutting. It is desirable to take measures to prevent the protruding end of the cutting blade support bar 70 from hitting the ground and being damaged.

When cutting grass, a front concealing plate 81, which is bent in a F shape when seen in a plan view, is provided upright on the front side of the support cylinder 11 so that the cut grass is guided to the side. desirable.

If the steering handle 16 is attached to the machine body a so that the angle can be changed and fixed within a range of approximately 90 degrees, the driver can hold the steering handle 16 in a state of facing the inclined surface to the road. It is also possible to stand and mow grass on a slope such as a grassy riverside while moving the machine body a to the left.

[0038]

Since the present invention is constructed as described above, traveling wheels and a steering device are provided in a machine body equipped with a traveling engine, and a rotary shaft which is rotated by power from the traveling engine in the front portion of the machine body. Is provided so as to project in the horizontal direction, the base of the rotating case is attached to the axis of the rotating shaft so as to be able to rotate in the forward and reverse directions, and a rotating device for rotating the rotating case in the forward and reverse directions is provided. A connecting cylinder that horizontally protrudes from the front end of the moving case is provided rotatably with respect to the axis of a driven shaft to which the rotation of the rotating shaft is transmitted. The base of the connecting cylinder and the tip of the rotating case. A fixing device that selects and fixes the rotation angle is provided on the and, the supporting cylinder of the cutting blade drive shaft is hung vertically at the tip of the connecting cylinder, and the cutting blade driving device is placed horizontally at the lower end of this supporting cylinder. A deceleration motor with a battery, which is attached to the vehicle and operates the rotating device, is installed on the machine body. The operation unit and the operation unit for releasing and fixing the fixing device are provided in the control device respectively, so that the angle of the mowing blade of the cutting blade drive device with respect to the mowing surface is all controlled by the control device. Since the operator can adjust it at a desired angle, the cutting blade drive device can be operated while operating the rotating device and the fixing device without having to stop the self-propelled vehicle in response to changes in the shape of the mowing surface during work. It becomes a practical and excellent self-propelled mower that can change the cutting condition of the grass cutting blade.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of this embodiment.

FIG. 2 is a side cross-sectional view of essential parts such as a turning device, a turning case, and a fixing device according to the present embodiment.

FIG. 3 is a partially cutaway front view showing the structure of the cutting blade drive device of the present embodiment.

FIG. 4 is a perspective view showing a structure of a cutting blade drive device of the present embodiment.

FIG. 5 is a plan view of a cutting blade driving arm, a cutting blade holding arm, a cutting blade support bar, an upper blade, and a lower blade of the present embodiment.

FIG. 6 is a front view in which the above part is cut away.

FIG. 7 is an explanatory plan view showing a state of mowing by the cutting blade drive device of the present invention.

FIG. 8 is an explanatory front view showing a state of cutting grass on the upper surface of the ridge of the cutting blade drive device of the present invention.

FIG. 9 is an explanatory front view showing a state of cutting grass on the left slope of the ridge of the cutting blade drive device of the present invention.

[Explanation of symbols]

 1 Running Engine 2 Running Wheel 3 Control Device 4 Rotating Shaft 5 Rotating Case 6 Rotating Device 8 Connecting Tube 9 Fixing Device 10 Cutting Blade Drive Axis 11 Support Tube 12 Cutting Blade Driving Device 13 Deceleration Motor 14 Switch Operating Unit 15 Operation Part 26 Driven shaft a Airframe

Claims (1)

[Claims] 1. A vehicle equipped with a traveling engine is provided with traveling wheels and a control device, and a rotating shaft which is rotated by power from the traveling engine is provided in a horizontal direction at a front portion of the vehicle. The base of the rotating case is attached to the axis of the shaft so as to be able to rotate in the forward and reverse directions, and a rotating device for rotating the rotating case in the forward and reverse directions is provided. The connecting cylinder provided is rotatably provided with respect to the axis of the driven shaft to which the rotation of the rotating shaft is transmitted, and the rotation angle is selected and fixed to the base of the connecting cylinder and the tip of the rotating case. A fixing device is provided, and a supporting cylinder of the cutting blade drive shaft is vertically installed at the tip of the connecting cylinder at a right angle, and a cutting blade driving device is attached to the lower end of the supporting cylinder in a horizontal state.
A deceleration motor with a battery for operating the rotating device is provided in the machine body, and a switch operating portion of the deceleration motor and an operating portion for releasing or fixing the fixing device are provided in the control device. A mower characterized by.