JP3383553B2 - Reel mower - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention internally incorporates a reel blade that is driven and rotated about a shaft in a lateral posture with respect to a case, and a fixed blade that is disposed close to the ground side of the reel blade. The present invention relates to a reel mower in which a grounding roller having a length over the entire cutting width of a reel blade is supported at a front position of the device around a shaft axis in a horizontal posture, and more specifically, to a technique for supporting the grounding roller.

[0002]

2. Description of the Related Art In a reel mower constructed as described above, a ground roller is arranged at a front position and a rear position,
During operation, the reel mower is supported by the machine body so that the reel mower is allowed to freely move up and down, so that the reel mower can be floated by following the irregularities of the ground as the machine body travels to enable mowing based on the ground. Also, the ground roller is
The cutting height can be adjusted by supporting a main body case having a reel blade and a fixed blade so that the upper and lower positions can be adjusted (for example, JP-A-5-328881).
No. 5).

[0003]

The ground roller at the front position of the conventional example will be considered. In the ground roller at the front position, the large diameter portion and the small diameter portion are arranged alternately in parallel in the axial direction. , Has a function to stand up the fallen grass. However, in reality, the large-diameter portion of the ground roller may push down the standing turf to reduce the mowing performance.

An object of the present invention is to reasonably construct a reel mower capable of suppressing the phenomenon of pushing down the grass by the ground roller arranged at the front position and performing good mowing.

[0005]

A first feature of the present invention (claim 1) is, as described at the beginning, a reel blade which is driven and rotated about an axis of a sideways posture with respect to a case, and this reel. In the reel mower, which has a fixed blade that is arranged close to the ground side of the blade and which supports a grounding roller of a length that spans the entire width of the cutting width of the reel blade at the front position of the case around the axial center in the lateral position, Set the cutting height by the reel blade
While maintaining a constant level, move the ground roller back and forth.
It is provided with a switching means for changing the distance between the ground roller and the reel blade in the front-rear direction by changing the position, and the operation and effect are as follows.

A second characteristic of the present invention (claim 2) is that in claim 1, the switching means is provided with a support member for axially supporting both end portions of the ground roller, and to both side portions of the case of the support member. Is provided with a support portion that allows the connection of the grounding roller and the reel blade by changing the connection position of the support member with respect to the support portion. , And the effects are as follows.

A third feature of the present invention (claim 3) is that in claim 2, the supporting portion is constituted by a flange having a vertical wall shape and protruding laterally to a side portion at a front position of the case. Together with this, by forming the supporting surface of the supporting member on the front surface and the rear surface of the flange, it is possible to switch between a state in which the supporting member is connected to the front surface of the flange and a state in which the supporting member is connected to the rear surface of the flange. This flange is configured as the switching means so as to allow the distance between the ground roller and the reel blade in the front-rear direction to be changed, and its action and effect are as follows.

A fourth characteristic of the present invention (claim 4) is that in claim 3, the main frame is in a horizontally long position for connecting the upper ends of the strut members extending upward from the positions near the left and right flanges. And is configured to exert a forward moving force on the main frame.
And, the effects are as follows.

[Operation] According to the first feature, when the distance between the ground roller at the front position and the reel blade in the front-rear direction is increased by the switching means, compared with the case where this distance is reduced. The time it takes for the grass stepped down by the ground roller to reach the reel blade is extended, and the grass can be mowed after the grass has slowly restored to the standing posture. On the contrary, when the distance between the ground roller at the front position and the reel blade in the front-rear direction is reduced by the switching means, the ability to follow small irregularities on the ground can be improved.

According to the second feature, the distance between the ground roller at the front position and the reel blade in the front-rear direction can be changed by changing the connecting position of the supporting member to the supporting portion.
The switching means can be formed with a simple structure.

According to the third feature, the front-back distance between the ground roller and the reel blade in the front position can be changed by selecting one of the front and rear support surfaces of the flange and connecting the support members. Becomes That is, it is assumed that a member protruding forward is formed at the front position of the case and the position of the member is changed in the front-rear direction. Since it is not necessary to form a member that protrudes, it is possible to use the through hole formed in the flange as the connecting structure and the connecting bolt inserted through the through hole.

According to the above-mentioned fourth feature, since the pillar material is provided in the vicinity of the position where the strength is increased due to the formation of the flange, the reel mower can be installed without adding a special structure for improving the strength of the case itself. A strong forward movement force can be applied to it, and the position where this forward movement force acts is the front position of the reel blade, so that the reel mower is pulled like a caster. As compared with the case where the forward movement force is applied in the form of pushing out, the posture of the reel mower at the time of forward movement can be stabilized by preventing the occurrence of the shake in the lateral direction.

[Advantages of the Invention] Therefore, switching between the good mowing work by suppressing the pushing-down phenomenon of the turf by the grounding roller arranged at the front position and the mowing work in a form following small irregularities on the ground. The reel mower capable of being constructed is reasonably constructed (Claim 1). Further, the distance between the ground roller and the reel blade in the front-rear direction can be switched with a simple structure (Claim 2), and the case is not increased in size for carrying out this switching (Claim 3). It is possible to strongly move forward in a stable posture (claim 4).

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1 and FIG. 2, the engine 4 is arranged in a state of being installed in an engine bonnet 3 at a rear portion of a traveling machine body including a drive-type front wheel 1 and a steering-type drive-type rear wheel 2. At the same time, the grass container 5 is arranged above the engine bonnet 3, and the three reel mowers 6, 6 are arranged at the front end position of the traveling body.
A riding type lawnmower is provided which is provided with 6 movable up and down and feeds the cut grass from the reel mowers 6, 6 and 6 into the grass container 5 through the duct 7 and the suction blower 8.

Further, the front portion of the traveling machine body is forwarded, and
Step 11 that opens to both sides is formed, a steering tower 12 is provided at the front position of this step 11, a steering handle 13 is provided at the upper end position of this steering tower 12, and a driver seat 14 is provided at the rear position of step 11. Further, a loop-shaped protection frame 15 for protecting the upper part and the side part of the driver's seat 14 is provided. As shown in FIG. 5, the three reel mowers 6, 6, 6 are arranged at a central position in the left-right direction with respect to the traveling machine body, and at both side positions on the rear side of the central position, and at the same time, the central position The reel mowers 6 are arranged in a positional relationship such that both ends of the cutting width of the reel mower 6 and inner ends of the reel mowers 6 and 6 of the both sides overlap.

The duct 7 has three flexible first members for feeding the cut grass from the three reel mowers 6, 6 and 6, respectively.
The ducts 7a, 7a, 7a and the three first ducts 7
a, 7a, 7a is provided with a merging member 7b for merging at the front position of the machine body, and a second duct 7c which is larger in diameter than the first duct 7a and is flexible for feeding the cut grass from the merging member 7b. The second duct 7c is arranged from the front position of the machine body to the right side position of the machine body, and the suction blower 8 is interposed at an intermediate position of the second duct 7c at the side position of the traveling machine body. Also, from this suction blower 8 to the second duct 7
The cut grass fed upward through c is the second duct 7
It is sent to the receiving cylinder 16 of the grass container 5 through an opening formed in an oblique posture at the upper end of c.
In addition, the confluence member 7b is formed by opening the tubular portion connected to the first duct 7a in the front and left and right directions and by opening the tubular portion connected to the second duct 7c in the upward direction. The joining member 7b is supported in a fixed position via a column 17 at the front position of the center position of the traveling machine body in the left-right direction.

As shown in FIG. 1, in the portion of the second duct 7c on the front side of the suction blower 8, a joining member 7b is formed.
The position directly above the part connected to the is set to the highest position, and the part connected to the suction blower 8 is set to the lowest position so that it is arranged in an oblique posture so that the cut grass does not remain in the second duct 7c. Has become.

As shown in FIG. 1, the grass container 5 is attached in an openable and closable manner via a container body 5a having an opening which opens rearward in the posture shown in the figure and a hinge 19 at the upper edge of the opening. And a lid 5b. The grass container 5 is provided with a bracket 20 provided at a lower position of the opening edge.
The lower end of the grass collection container 5 is swingably connected to a stay 22 formed on a support frame 21 at the rear of the traveling body about a support shaft 23 in a horizontal position, so that the entire grass collection container 5 shown in FIG. And the discharging posture shown in FIG. 2 can be switched. The cut grass fed together with the flow of air from the receiving cylinder 16 falls into the grass container 5 by its own weight due to the decrease in the flow velocity of the air inside the grass container 5, and is collected. The air is exhausted from the upper space inside the grass container 5 to the rear side of the lid 5b (not shown).
It is discharged to the outside of the container via the.

Further, the discharging cylinder 24 for switching the attitude of the grass container body 5a is provided with the bracket 20 and the support frame 2.
1 and the link member 25 for opening and closing the lid 5b in conjunction with the attitude switching of the grass container body 5a is provided between the stay 22 and the arm 26 connected to the lid 5b. When the grass container body 5a is set in the grass collecting position by driving the discharging cylinder 24 to the contracting side, the lid body 5b is maintained in the closed state as shown in FIG. By driving the grass container body 5
When the discharge attitude of a is changed, as shown in FIG.
The receiving cylinder 16 is separated from the upper end of the duct 7c, and
With the lid 5b open, the grass grass container main body 5a is directed downward so that the grass can be discharged.

As shown in FIG. 5, the suction blower 8 is provided with a drive shaft 8a oriented in the front-rear direction and the drive shaft 8a.
Power from the engine 4 is transmitted to a through a belt tension type clutch 28, a transmission shaft 29 in a front-back direction, and a belt transmission mechanism 30 formed between the transmission shaft 29 and the drive shaft 8a. It has become a thing.

As shown in FIG. 5, the base end portion of the first arm 33, which is in a posture along the front-rear direction of the traveling machine body, with respect to the center position of the front end of the vehicle body frame 32 in the left-right direction, has an axis X in a horizontal posture. The base end portion of the second arm 34, which is pivotally supported around and is bent toward the outside of the traveling machine body toward the front end side with respect to the left and right end positions of the front end of the vehicle body frame 32, is the axis of the lateral posture. It is pivotally supported around X and the coaxial core,
The reel mowers 6, 6, 6 are connected and supported at the front end positions of the first arm 33 and the second arm 34.

That is, as shown in FIG. 6, the first arm 3
A lift arm 36 that is driven to move up and down by a first lift cylinder 35 is provided in the vicinity of the base end of 3, and the lift arm 36 and the base end of the first arm 33 are connected in a suspended state via a link member 37. As shown in FIG. 7, the left and right second arms 34, 34 have respective second arms 3 and 3 at the base end portions thereof.
4 includes an arm 34a that swings integrally, and this arm 34a
The second lift cylinder 38 for operating the. Figure 5
As shown in FIG. 5, a channel-shaped support bracket 39 that opens forward is provided at the tip end position of each of the first arm 33 and the second arm 34 so as to be rotatable around the rolling axis Y in the front-back orientation. The center position of the main frame 40 above the reel mower 6 in the left-right direction with respect to 39 is rotatably supported around the yawing axis Z in the vertical posture.

Further, as shown in FIGS. 3 and 4, at the front end position of the traveling machine body, a frame member 41 having a shape in which the outer end in the left-right direction is directed upward is provided. Abutting rollers 42, 42 made of an elastic material such as rubber are rotatably supported around an axis in a front-back direction. When raising the three reel mowers 6, 6, 6, the first lift cylinder 35, the second lift cylinder 38,
38 are driven to extend at the same time, and at the time of this rise, as shown in FIG. 4, contact rollers 42, 42 are brought into contact with main frames 40 of reel mowers 6, 6 at the left and right positions.
Are contacted with each other, and the reel mowers 6, 6, 6 are rotated around the rolling axis Y, Y to switch to an inclined posture in which the outer end side is directed upward.

The three reel mowers 6, 6, 6 have the same structure, and the structure will be described by taking the reel mower 6 at the central position as an example. That is, as shown in FIGS. 8 to 10, the reel mower 6 includes a case body 45 including side wall members 45a, 45a arranged on the left and right, an upper wall member 45b arranged on the upper side, and a rear wall member 45c arranged on the rear part. And a guide member 46 that is detachably attached to the front position of the case body 45, and the reel blade is rotatable about the axis of the sideways members 45a and 45a. 47 is supported, a fixed blade 48 is disposed in proximity to the outer periphery of the lower side of the reel blade 47, and a front ground roller 49 and a rear ground roller 50 as gauge wheels are provided for the front position and the rear position, A hydraulic motor 51 for driving the reel blade 47 is provided on one side wall member 45a. In addition, the upper ends of the pillar members 52, 52 extending upward so that they can swing relative to the side wall members 45a, 45a around the rod 54 penetrating left and right at the front positions of the left and right side wall members 45a, 45a. Since the main frame 40 is provided in such a manner that it is connected in a posture parallel to the axis of rotation of the reel blade 47, pitching around the rod 54 of the reel mower 6 is allowed at the time of work, and the followability to the ground is enhanced. Further, stoppers 43 are provided at upper positions of the left and right side wall members 45a, 45a to determine the pitching limit of the reel mower 6 by abutting against the support member 52 when the reel mower 6 is lifted to a height spaced from the ground. ing.

The rear wall member 45c is swingably openable and closable around a swing shaft 53 in a sideways posture. Further, the guide member 46 is formed in a bag shape in which a rear side communicates with the inside of the case body 45 and a discharge port 46a opening upward is formed at a front position, and the first duct is connected to the discharge port 46a. 7a is to be connected. Further, the discharge port 46a is set at a central position in the left-right direction in a plan view, and a mountain-shaped guiding slope is formed so that the grass grass is guided to the discharge port 46a in the left-right direction in a plan view so as to project forward toward the center. Surface 46b,
46b is formed. In addition, a rod 54 in a horizontal posture is arranged below the front opening inside the case body 45, and left and right spring members made of a spring material so as to elastically sandwich the rod 54 at the lower end of the opening edge behind the guide member 46. By providing a pair of holding members 55, 55, and by providing a pair of left and right buckles 57, 57 on the upper surface of the guide member 46, the pair of engaging pieces 56, 56 of the upper wall member 45a can be engaged and disengaged. 46 is configured to be attachable to and detachable from the case body 45.

As shown in FIG. 9, the left and right side wall members 4 are formed.
The air inflow path 44 is formed by setting a gap having a sufficient distance for intake between the front positions of the 5a and 45a and the ground.

Further, the reel blade 47 is set in a direction indicated by an arrow in FIG. 9, that is, in a rotation direction so that the ground side of the outer periphery moves to the rear side of the traveling machine body.
7 and the fixed blade 48 cut the grass, the reel blade 4
7 is sent from the lower position of the case to the upper position of the case via the rear position of the case by contact with 7, or wind pressure caused by rotation. Of the guide member 46 to the front, and the inclined surface 46b of the guide member 46 guides the guide member 46 to the center position in the left-right direction.
It has been sent from above. Then, after being sent out in this way, it is sent to the grass collecting container 5 via the first duct 7a, the joining member 7b, the second duct 7c, the suction blower 8, and the receiving cylinder 16 to be collected. There is.

As shown in FIG. 10, the drive shaft 47a of the reel blade 47 supports one end of the drive shaft 47a with respect to the side wall member 45a through the bearing member 58, and the other end of the drive shaft 47a.
1 to support the side wall member 45a through the bearing member 5
8. The hydraulic motors 51 each have a support shaft 5 arranged at a position rearward of the drive shaft 47a and on an axis parallel to the drive shaft 47a.
As shown in FIG. 8, for example, a side that is swingably supported around 9, 59 and that includes the hydraulic motor 51 is provided with screw shafts 61 that are screwed into the nut members 60 that are provided at the respective front positions. By providing the side wall member 45a, the knob 6 of the screw shaft 61 is provided.
The drive shaft 47a is vertically position-adjusted by rotating 1a so that the gap between the drive shaft 47a and the fixed blade 48 can be adjusted.

As shown in FIGS. 8 and 11 (a) and 12 (a), the front ground roller 49 has a support shaft 49 extending over the entire width.
a and a metal roller portion 49 at both end positions.
b is rotatably supported on the support shaft 49a, and a turf upright portion in which a large diameter portion 49c and a small diameter portion 49d are alternately arranged in the middle portion is provided as the support shaft 49a.
The rear grounding roller 50 is configured to support the spindle 5
It is constructed with rollers of equal diameter over the entire width which are supported around 0a. Also, the left and right side wall members 45
The front end portions of a and 45a are bent laterally outward to form a vertical wall-shaped flange 64 as a support portion. A support member 65 is connected and fixed to the front surface of the left and right flanges 64 with bolts 66. is there. A screw shaft 67 penetrates through the support member 65 in a vertical direction, and a knob 6 for rotating operation is provided at an upper end of the support member 65.
7a, a support piece 68 is provided at the lower end, and the support shaft 4 of the front ground roller 49 is attached to the left and right support pieces 68, 68.
9a is supported. The support member 65 is shown in FIG.
As shown in (b) and FIG. 12 (b), it is also possible to connect to the rear surface side of the flange 64.

That is, the flange 64 has the bolt 66.
When a support member 65 is connected to the support surface on the front side of the flange 64, a through hole (not shown) through which the blade is inserted is formed, and the grass cutting position by the reel blade 47 and the front ground roller 4
The distance D from the grounding point of 9 is expanded, and FIG.
(B) As shown in FIG. 12 (b), when the supporting member 65 is connected to the supporting surface on the rear surface side of the flange 64, the distance between the grass cutting position by the reel blade 47 and the grounding point of the front grounding roller 49. If d is set to a reduced value and the distance D is set to an increased value, the turf that has fallen under the pressure of the front ground roller 49 can be mowed in a state where the turf is restored to the standing posture over time. When set to d, it is possible to follow small irregularities on the ground with high accuracy.
By rotating the knob 67a, the amount of downward protrusion of the front ground roller 49 is changed, and the cutting height of the lawn can be adjusted.

As shown in FIGS. 8 and 9, a plate 69 having a large number of through holes 69a formed in the vertical direction with respect to the outer surface side of the rear end positions of the left and right side wall members 45a, 45a is selected as the through hole. The left and right plates 69, 69 are connected to the side wall member 45a through bolts 70 that pass through 69a.
The support shaft 50 a of the rear ground roller 50 is supported by the support shaft 69. The plate 69 has a rear ground roller 50 depending on the selection of the through hole 69a through which the bolt 70 is inserted.
The amount of downward protrusion of the grass has been changed, and the cutting height of the grass can be adjusted.

As shown in FIG. 13, three hydraulic motors 5
1, 51, 51, first and second lift cylinders 35, 3
A hydraulic circuit for controlling the hydraulic pressure control circuits 6 and 36 is formed. In this hydraulic circuit, the hydraulic oil from the hydraulic pump 71 driven by the engine 4 is arranged in series via the first oil passage L1 and the first electromagnetic valve V1. A route for sending to the three hydraulic motors 51, 51, 51 is formed, and a working oil branched from the first oil passage L1 and a return oil from the first solenoid valve V1 are sent to the second.
The first and second lift cylinders 35, 36, 36 are provided in the oil passage L2.
A second solenoid valve V2 for controlling the
A drain oil passage L3 for discharging return oil from is formed. Also, in this hydraulic circuit, the reel mower 6 at the center position in the three left and right directions and the on-off valves V3, V4, V4 for switching between stopping and driving of the hydraulic motors 51, 51, 51 of the left and right reel mowers 6, 6 are selected. Equipped with a first oil passage L1 and a second
A first variable throttle valve 72 for adjusting the drive speed of the hydraulic motors 51, 51, 51 is provided between the oil passage L2 and the hydraulic motors 51, 51, 51 between the first oil passage L1 and the drain oil passage L3. And a second relief valve 73 for ensuring the driving pressure of the first and second lift cylinders 35, 36, 36 between the second oil passage L2 and the drain oil passage L3. A variable relief valve 74 is provided, and a second relief valve 75 is provided between the second oil passage L2 and the drain oil passage L3 to secure the driving pressure of the first and second lift cylinders 35, 36, 36. 2 Solenoid valve V2 to first and second lift cylinders 35, 36, 3
No. 1 to the oil passage branched from the oil passage for sending hydraulic oil to 6
A check valve 76 that is opened by pilot pressure when lowering the second lift cylinders 35, 36, 36 is provided, and the first and second lift cylinders are provided on the drain oil passage side of the check valve 76 to reduce the ground pressure of the reel mower 6. 35, 36,
A third relief valve 77 for applying a back pressure to 36 is provided.

The first solenoid valve V1 is configured to be switchable between three positions so that the hydraulic motor 51 can be rotated normally, reversely, and stopped, and the second solenoid valve V2 is used to stop the reel mower 6 from moving up and down and moving up and down. It can be operated in 3 positions so that you can do it.
When working, the first solenoid valve V1 is set to the forward rotation position to supply hydraulic oil to the respective hydraulic motors 51, and the second solenoid valve V1 is supplied.
By setting 2 to the descending position, the reel mower 6 descends until the front and rear grounding rollers 49, 50 come into contact with the ground, and back pressure from the third relief valve 77 acts in this state, so that there is unevenness on the ground. Follows the unevenness and floats lightly.

The left and right second lift cylinders 36, 36
The lowering prevention valves V5, V5 are provided for preventing the left and right reel mowers 6, 6 from lowering by blocking the discharge of the hydraulic oil from the cylinder to the oil passage for the lowering prevention valves V5, V5. Is linked with the opening / closing valve V4 via a restriction mechanism 78 composed of a wire or the like so as to stop the driving of the hydraulic motor 51 corresponding to the reel mower 6 when the closing operation is performed. When only one of the left and right reel mowers 6 and 6 is maintained in the raised posture during the work, the first and second lift cylinders 35, 36 and 36 are operated by operating the second solenoid valve V2. After supplying hydraulic oil to raise the three reel mowers 6, 6, 6 and then closing the lowering prevention valve V5 corresponding to the reel mower 6 which is kept in the raised state, the oil passage is closed at the same time, As a result of the corresponding on-off valve V4 being in the communicating state, even if the second solenoid valve V2 is operated to the side that lowers the first and second lift cylinders 35, 36, 36, the reel mower 6 is prevented from descending. The drive of the hydraulic motor 51 of the reel mower 6 is also stopped.

As described above, according to the present invention, the flange 64 and the
In the case where the switching means is constituted by a structure that allows the support member 65 to be connected to the connecting surfaces of the front surface and the rear surface of the flange 64 as the supporting portions, respectively, when the support member 65 is connected to the front surface side of the flange 64 by the switching means. The front ground roller 49
Since the distance D between the reel blade 47 and the reel blade 47 in the front-rear direction is enlarged, the time taken for the grass stepped down by the large diameter portion 49c of the front ground roller 49 to reach the position of the reel blade 47 is extended to the standing posture. The grass after restoration can be mowed. Conversely, when the support member 65 is connected to the rear surface side of the flange 64, the distance d in the front-rear direction between the front ground roller 49 and the reel blade 47 is reduced, The ability to follow small irregularities on the ground can be improved, and the configuration that allows this distance to be changed is simple enough to form the flange 64. Also, the change can be connected by bolts 66. It is a relatively simple operation of changing the form.

Particularly, in the present invention, the left and right side wall members 45 are provided.
Since the flanges 64 are formed by bending the front ends of the a and 45a, the strength of the front ends of the left and right side wall members 45a and 45a can be increased. Since the main frame 40 is provided in a state in which the left and right support members 52, 52 are connected to each other, the reel mower 6
You can apply a strong forward movement force to
Moreover, the position where this forward movement force acts is at the reel blade 47.
Therefore, the reel mower 6 is pulled like a caster because it is at the front position (the position of the load 54), and the posture of the reel mower 6 during forward movement is stabilized by preventing the lateral runout from occurring. There is.

[Other Embodiments] In the present invention, instead of the embodiment, for example, the lower end of the pillar member 52 in FIG. 8 is connected to the portion of the support member 65 so as to be freely pitched around the axis of the lateral posture. This is also possible, and in such a configuration, the posture of the reel mower 6 during work becomes more stable.

[Brief description of drawings]

[Figure 1] Overall side view of the lawn mower

FIG. 2 is a side view of the grass container in a discharging position.

[Figure 3] Front view of the lawn mower

FIG. 4 is a front view of the reel mower in a raised state.

FIG. 5 is a schematic plan view of the lawn mower.

FIG. 6 is a side view of the lifting structure for the first arm.

FIG. 7 is a side view of the second arm lifting structure.

FIG. 8 is a side view of the reel mower.

FIG. 9 is a vertical sectional side view of the reel mower.

FIG. 10 is a plan view of the reel mower.

FIG. 11 is a side view showing two states in which the mounting position of the front ground roller is switched.

FIG. 12 is a plan view showing two states in which the mounting position of the front ground roller is switched.

FIG. 13 is a hydraulic circuit diagram for the reel mower.

[Explanation of symbols]

40 main frame 45 cases 47 reel blade 48 fixed blade 49 Ground roller 52 Support material 64 flange 65 Support member

Continuation of the front page (56) References: Kaihei 3-56314 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A01D 34/42-34/62

Claims (4)

(57) [Claims] 1. A reel blade, which is driven and rotated about an axis in a lateral position with respect to a case, and a fixed blade, which is disposed in proximity to the ground side of the reel blade, are internally provided, and a reel is provided at a front position of the case. A reel mower in which a ground roller having a length that spans the entire cutting width of the blade is supported around an axis in a horizontal posture, and the cutting height by the reel blade is maintained at a set level.
To change the position of the ground roller in the front-back direction
Therefore, the reel mower including the switching means for changing the distance between the ground roller and the reel blade in the front-rear direction. 2. The switching means includes a support member that axially supports both end portions of the ground roller, and a support portion that allows connection of the support member to both side portions of the case, and a support member for the support portion. 2. The reel mower according to claim 1, wherein the reel mower is configured to allow a change in the front-rear direction distance between the ground roller and the reel blade by changing the connection position of the reel mower. 3. The supporting portion is composed of a vertical wall-shaped flange that projects laterally to a side portion at a front position of the case, and a supporting surface of the supporting member is provided on a front surface and a rear surface of the flange. By forming the, it is possible to change the distance in the front-rear direction between the ground roller and the reel blade by switching between the state in which the support member is connected to the front surface of the flange and the state in which the support member is connected to the rear surface of the flange. The reel mower according to claim 2, wherein the flange is configured as the switching means. 4. A main frame in a laterally long posture, which connects upper end portions of support members extending upward from positions near the left and right flanges, and is configured to apply a forward movement force to the main frames. The reel mower according to claim 3, which is provided.