JPH1146545A - Reel mower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reel mower enabling to control the turf-pushing phenomenon of a grounding roller disposed the front position of the mower and thereby enabling to carry out a good mowing work. SOLUTION: A grounding roller 49 is disposed at the front position of a case receiving a reel blade 47 and a fixed blade, and a vertical wall-like flange 64 projected in the lateral direction is formed the right and left front positions of the case. The support shaft 49a of the grounding roller 49 is supported on the lower end position of a support member 65 capable of being connected to either of the front and rear surfaces of the flange 64. A longitudinal distance between the grounding roller and the reel blade can be changed by switching the connection of the support member 65 to the front surface of the flange 64 or the connection of the support member 65 to the rear surface of the flange.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a reel blade which is driven and rotated around an axis in a lateral position with respect to a case, and a fixed blade which is disposed close to the ground side of the reel blade. More specifically, the present invention relates to a technology for supporting a ground roller, in which a ground roller having a length extending over the entire width of the cutting width of a reel blade is supported around an axis in a lateral posture.

[0002]

2. Description of the Related Art In a reel mower constructed as described above, a ground roller is disposed at a front position and a rear position.
During operation, the entire reel mower is supported by the fuselage to allow free lifting and lowering, so that the reel mower follows the unevenness of the ground as the fuselage travels, allowing the reel mower to float, thereby enabling cutting based on the ground. Also, the ground roller
The cutting height can be adjusted by supporting a main body case having a reel blade and a fixed blade so that the vertical position can be adjusted (for example, Japanese Patent Application Laid-Open No. 5-32881).
No. 5).

[0003]

Considering the above-mentioned prior art ground roller at the front position, the ground roller at the front position is obtained by alternately arranging a large diameter portion and a small diameter portion in the axial direction. , And has a function of standing up the falling turf. However, in reality, the lawn in an upright state may be pushed down by the large diameter portion of the grounding roller, and the cutting performance may be reduced.

It is an object of the present invention to rationally configure a reel mower capable of suppressing a turf from being pushed down by a ground roller disposed at a front position and performing a good mowing.

[0005]

According to a first feature of the present invention, as described at the outset, a reel blade driven and rotated around an axis centered in a lateral direction with respect to a case, and the reel blade are provided. In a reel mower having a fixed blade disposed in proximity to the ground side of the blade and a ground roller having a length extending over the entire width of the cutting width of the reel blade supported at a front position of the case around an axis in a lateral posture, There is provided switching means for allowing a change in the distance between the ground roller and the reel blade in the front-rear direction, and the operation and effect thereof are as follows.

According to a second feature of the present invention (claim 2), in claim 1, the switching means includes a support member for pivotally supporting both end portions of the ground roller, and a side portion of the support member to the both sides of the case. And a change in the connecting position of the support member with respect to the support allows a change in the distance between the ground roller and the reel blade in the front-rear direction. The effects are as follows.

A third feature of the present invention (claim 3) is that in claim 2, the support portion is constituted by a vertical wall-shaped flange projecting laterally to a side portion at a front position of the case. In addition, by forming the support surface of the support member on the front and rear surfaces of the flange, switching between a state in which the support member is connected to the front surface of the flange and a state in which the support member is connected to the rear surface of the flange. This flange is configured as the switching means so as to allow a change in the distance between the ground roller and the reel blade in the front-rear direction. The operation and effect are as follows.

A fourth feature of the present invention (claim 4) is that, in claim 3, the main frame having a horizontally long posture connecting the upper ends of the support members extending upward from the vicinity of each of the left and right flanges. In that it is configured to apply a forward movement force to the main frame.
And the effect is as follows.

According to the first feature, when the distance in the front-rear direction between the ground roller and the reel blade at the front position is increased by the switching means, compared with the case where this distance is reduced. The time required for the turf that has been stepped down by the ground roller to reach the reel blade is extended, and the turf after the turf has been restored to the standing posture over time can be cut off. Conversely, when the distance in the front-rear direction between the ground roller and the reel blade at the front position is reduced by the switching means, the performance of following small irregularities on the ground can be improved.

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

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

According to the fourth feature, the pillar is provided near the position where the strength is increased by forming the flange, so that the reel mower can be provided to the reel mower without adding a special structure for improving the strength of the case itself. A powerful forward movement force can be applied to the reel blade, and the position where the 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 a configuration in which the forward movement force is applied in a form in which the reel mower is pushed out, the occurrence of lateral deflection is prevented, and the posture of the reel mower during forward travel can be stabilized.

[Effects of the Invention] Therefore, switching between a good mowing operation by suppressing the lawn down phenomenon by the grounding roller arranged at the front position and a mowing operation in a form following small irregularities on the ground is achieved. Thus, a reel mower capable of performing the above operation is rationally configured (claim 1). Further, it is possible to switch the distance between the ground roller and the reel blade in the front-rear direction with a simple structure (Claim 2), and it is not necessary to increase the size of the case for this switching (Claim 3). Can be strongly moved forward in a stable posture (claim 4).

[0014]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, an engine 4 is disposed in a rear portion of a traveling body including a driving type front wheel 1 and a driving type rear wheel 2 to be steered, in a state of being installed in an engine hood 3. At the same time, the grass container 5 is arranged above the engine bonnet 3 and three reel mowers 6, 6,
6 is provided so as to be able to move up and down freely, and a riding lawn mower is constructed in which the cut grass from the respective reel mowers 6, 6, 6 is fed into the grass collection container 5 through the duct 7 and the suction blower 8, respectively.

[0015] Further, the front of the traveling body is located forward, and
A step 11 for opening to both sides is formed, a control tower 12 is provided at a front position of the step 11, a steering handle 13 is provided at an upper end position of the control tower 12, and a driver seat 14 is provided at a rear position of the step 11. Further, a loop-shaped protection frame 15 for protecting the upper portion and side portions of the driver's seat 14 is provided. As shown in FIG. 5, the three reel mowers 6, 6, and 6 are arranged at a center position in the left-right direction with respect to the traveling machine body and at both side positions behind the center position. The two ends of the cutting width of the reel mower 6 and the inner ends of the cutting widths of the reel mowers 6 and 6 on both sides are arranged in a positional relationship so as to overlap with each other.

The duct 7 is provided with three flexible first feeders for feeding the cut grass from the three reel mowers 6, 6, and 6, respectively.
Ducts 7a, 7a, 7a and these three first ducts 7
a, a, 7a, and 7a are joined at a position in front of the fuselage; and a second duct 7c, which is larger in diameter and flexible than the first duct 7a, for feeding the cut grass from the joining member 7b. The second duct 7c is arranged from the front of the body to the right side of the body, and the suction blower 8 is interposed at an intermediate position of the second duct 7c at the side of the traveling body. In addition, the second duct 7
c through the second duct 7
It is sent to the receiving cylinder 16 of the grass collection container 5 through an opening formed in the upper end of the container c in an oblique posture.
Also, the merging member 7b is formed by forming a tubular portion to which the first duct 7a is connected in such a manner as to open forward and left and right, and forming a tubular portion to which the second duct 7c is connected in such a manner as to open upward. The joining member 7b is supported in a fixed position via a column 17 at a position forward of a center position of the traveling body in the left-right direction.

As shown in FIG. 1, a converging member 7b is provided at a portion of the second duct 7c in front of the suction blower 8.
The position directly above the part connected to the suction blower 8 is set to the highest position, and the part connected to the suction blower 8 is set to be the lowest, 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 collection container 5 is attached to the container main body 5a having an opening which is opened rearward in the posture shown in FIG. And a lid 5b. The grass collection container 5 is provided with a bracket 20 provided at a position below the opening edge.
Is connected to a stay 22 formed on a support frame 21 at the rear part of the traveling body so as to be swingable around a support shaft 23 in a lateral posture, so that the grass container 5 as a whole is in the grass-collecting posture shown in FIG. And the discharge posture shown in FIG. The cut turf sent in with the flow of air from the receiving cylinder 16 falls into the grass collection container 5 by its own weight due to a decrease in the flow velocity of the air inside the grass collection container 5 and is collected. The air is exhausted from an upper space inside the grass collecting container 5 to the rear side of the lid 5b (not shown).
Is discharged out of the container via the

The release cylinder 24 for switching the attitude of the grass container 5a is connected to the bracket 20 and the support frame 2.
1 and a link member 25 for opening and closing the lid 5b in conjunction with the switching of the attitude of the grass collecting container main body 5a is provided over the stay 22 and the arm 26 connected to the lid 5b. When the grass collecting container main body 5a is set in the grass collecting posture by driving the discharge cylinder 24 to the contraction side, the lid 5b is maintained in the closed state as shown in FIG. Grass container body 5 by driving
a is changed to the second position as shown in FIG.
The receiving cylinder 16 is separated from the upper end of the duct 7c, and
With the lid 5b opened, the cut grass can be discharged with the opening of the grass collecting container main body 5a facing downward.

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

As shown in FIG. 5, the base end of the first arm 33 extending in the front-rear direction of the traveling body with respect to the center position of the front end of the vehicle body frame 32 in the left-right direction, has the axis X in the lateral posture. The base end of the second arm 34, which is pivotally supported around the periphery of the vehicle body frame 32 and is bent toward the outside of the traveling body toward the front end with respect to the left and right end positions of the front end of the body frame 32, has the shaft center in the lateral posture. It is pivotally supported around the coaxial core with X,
The respective 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.
A lift arm 36 driven up and down by a first lift cylinder 35 is provided in the vicinity of the base end of No. 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. Also, as shown in FIG. 7, each of the second arms
4. An arm 34a that swings integrally is provided.
Is provided with a second lift cylinder 38 for operating the. FIG.
As shown in FIG. 7, a channel-shaped support bracket 39 that opens forward is provided at the distal end position of each of the first arm 33 and the second arm 34 so as to be rotatable around a rolling axis Y in a front-rear posture. A 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 a yawing axis Z in a vertical orientation.

As shown in FIGS. 3 and 4, at the front end position of the traveling body, a frame member 41 having a shape which is directed upward toward the outer end in the left-right direction is provided. Contact rollers 42, 42 made of an elastic material such as rubber are rotatably supported around an axis in a front-rear direction. When raising the three reel mowers 6, 6, and 6, the first lift cylinder 35, the second lift cylinder 38,
At the time of ascending, as shown in FIG. 4, contact rollers 42, 42 are attached to the main frames 40 of the reel mowers 6, 6 at the left and right positions.
, And the respective reel mowers 6, 6, 6 are rotated around the rolling axes Y, Y to switch to an inclined posture in which the outer end thereof is directed upward.

The three reel mowers 6, 6, and 6 have the same structure, and the structure will be described by taking the reel mower 6 at the center position as an example. That is, as shown in FIGS. 8 to 10, the reel mower 6 has 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 part, and a rear wall member 45c arranged on the rear part. And a guide member 46 detachably attached to a front position of the case body 45, and a reel blade rotatable around an axis in a laterally oriented posture with respect to the side wall members 45a, 45a. 47, a fixed blade 48 is disposed close 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. One of the side wall members 45a is provided with a hydraulic motor 51 for driving the reel blade 47. Also, the upper ends of the support members 52, 52 extending upward so as to be able to swing relative to the side wall members 45a, 45a around the rod 54 penetrating the front portions of the left and right side wall members 45a, 45a to the left and right. Since the main frame 40 is provided in a form in which the reel frame 47 is connected in a posture parallel to the rotation axis 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 improved. Further, stoppers 43 are provided at the upper positions of the left and right side wall members 45a, 45a to determine the pitching limit of the reel mower 6 when the reel mower 6 is brought up to a level separated from the ground and comes into contact with the support member 52. ing.

The rear wall member 45c is provided so as to be able to swing open and close around a swing shaft 53 in a horizontal posture. The guide member 46 has a rear portion communicating with the inside of the case main body 45 and is formed into a bag shape having a discharge port 46a opened upward 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 the center position in the left and right direction in plan view, and a mountain-shaped guide slope is formed so as to project forward toward the center in the left and right direction in plan view so as to guide the cut grass to the discharge port 46a. Surface 46b,
46b are formed. A rod 54 in a horizontal position is disposed below the front opening inside the case body 45, and a left and right spring made of a spring material is elastically sandwiched between the lower end of the opening edge behind the guide member 46. The guide member 46 is provided with a pair of left and right buckles 57, 57 which can be disengaged from the pair of engagement pieces 56, 56 of the upper wall member 45a. 46 is configured to be detachable from the case body 45.

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

The rotation direction of the reel blade 47 is set in the direction indicated by the arrow in FIG. 9, that is, the rotation direction is set so that the outer peripheral ground moves toward the rear of the traveling machine body.
The cutting grass cut by the fixed blade 7 and the fixed blade 48 is
7 or is sent upward from the case lower position through the case rear position by the wind pressure caused by the rotation. The guide member 46 is fed forward inside the guide member 46 and guided by the inclined surface 46b of the guide member 46 to the center position in the left-right direction.
From above. Then, after being sent out in this manner, it is sent to the grass collection container 5 via the first duct 7a, the merging member 7b, the second duct 7c, the suction blower 8, and the receiving cylinder 16 to be collected. I have.

As shown in FIG. 10, a drive shaft 47a of the reel blade 47 has one end supported by a side wall member 45a via a bearing member 58, and the other end supported by the hydraulic motor 5a.
1 and supported on the side wall member 45a through the bearing member 5
8, each of the hydraulic motors 51 is a support shaft 5 disposed on a shaft center parallel to the drive shaft 47a at a position rearward of the drive shaft 47a.
As shown in FIG. 8, for example, on the side provided with the hydraulic motor 51, which is swingably supported around 9, 59, a screw shaft 61 screwed to a nut member 60 provided at each front position is provided. The knob 6 of the screw shaft 61 is provided on the side wall member 45a.
The rotating shaft 1a is configured to adjust the position of the drive shaft 47a in the vertical direction to adjust the gap with the fixed blade 48.

As shown in FIGS. 8, 11 (A) and 12 (A), the front ground roller 49 has a support shaft 49 extending over the entire width.
a, and metal roller portions 49 at both end positions
b on a support shaft 49a, and a grass upright portion in which large-diameter portions 49c and small-diameter portions 49d are alternately arranged in the middle portion is supported on the support shaft 49a.
The rear grounding roller 50 is configured to rotate freely on the support shaft 5.
It is configured with rollers of equal diameter over the entire width that is idlely supported around 0a. Also, the left and right side wall members 45
A front end portion of each of the a and 45a is 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 surfaces of the left and right flanges 64 with bolts 66. is there. The support member 65 is vertically threaded with a screw shaft 67 threaded therethrough.
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.
(B), as shown in FIG. 12 (b), it is also possible to connect to the rear side of the flange 64.

That is, the bolt 66 is attached to the flange 64.
When a support member 65 is connected to the front support surface of the flange 64, the grass cutting position by the reel blade 47 and the front ground roller 4 are formed.
9, the distance D from the contact point 9 is enlarged, and FIG.
12B, when the support member 65 is connected to the support surface on the rear side of the flange 64 as shown in FIG. 12B, the distance between the lawn cutting position by the reel blade 47 and the grounding point of the front grounding roller 49. When the distance d is reduced and the distance D is set to be enlarged, the turf that has fallen down by the pressure of the front contact roller 49 can be harvested in a state where it takes a long time to restore the turf to a standing posture, and the reduced distance can be obtained. When it is set to d, it can follow small irregularities on the ground with high accuracy.
The amount of downward protrusion of the front ground roller 49 is changed by rotating the knob 67a, so that the lawn mowing height 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 at the rear end position of the left and right side wall members 45a, 45a is selected. The right and left plates 69, 69a are connected to the side wall member 45a through bolts 70 that pass through them.
A support shaft 50 a of the rear ground roller 50 is supported by 69. The plate 69 can be adjusted by selecting the through hole 69a through which the bolt 70 is inserted.
The amount of downward protrusion of the turf has been changed, so that the height of grass cutting can be adjusted.

As shown in FIG. 13, three hydraulic motors 5
1, 51, 51, first and second lift cylinders 35, 3
6 and 36, a hydraulic circuit is formed. In this hydraulic circuit, hydraulic oil from a hydraulic pump 71 driven by the engine 4 is arranged in series via a first oil passage L1 and a first solenoid valve V1. A path is formed to be sent to the three hydraulic motors 51, 51, 51, and a second oil to which hydraulic oil branched from the first oil passage L1 and return oil from the first solenoid valve V1 are sent.
The first and second lift cylinders 35, 36, 36 are provided in the oil passage L2.
And a second solenoid valve V2 for controlling the second solenoid valve V2.
A drain oil passage L3 for discharging the return oil from the tank is formed. In this hydraulic circuit, on-off valves V3, V4, V4 for switching between stop and drive of the three reel mowers 6 at the center position in the left and right direction and the hydraulic motors 51, 51, 51 of the left and right reel mowers 6, 6 are provided. And the first oil passage L1 and the second oil passage L1
A first variable throttle valve 72 for adjusting the drive speed of the hydraulic motors 51, 51, 51 is provided between the first oil passage L1 and the drain oil passage L3. A first 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 throttle valve 74, a second relief valve 75 for securing 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; From the second solenoid valve V2 to the first and second lift cylinders 35, 36, 3
6 to the oil passage branched from the oil passage that sends hydraulic oil
A check valve 76 is opened by the pilot pressure when the second lift cylinders 35, 36, 36 are lowered. 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 to three positions so that the hydraulic motor 51 can perform normal rotation, reverse rotation, and stop, and the second solenoid valve V2 controls the rise, fall, and stop of the elevation of the reel mower 6. It is configured to be operable in three positions so that it can be performed,
During operation, the hydraulic oil is supplied to each hydraulic motor 51 by setting the first solenoid valve V1 to the normal rotation position, and the second solenoid valve V1
By setting 2 to the lowered position, the reel mower 6 is lowered until the front and rear ground rollers 49 and 50 are grounded. In this state, the back pressure from the third relief valve 77 acts, so that when there is unevenness on the ground, Is to float lightly following irregularities.

The left and right second lift cylinders 36, 36
And descent prevention valves V5 and V5 for preventing the hydraulic motors from being discharged from the cylinders to the oil passages to prevent the left and right reel mowers 6 and 6 from descending. Is linked with the on-off valve V4 via a regulating mechanism 78 composed of a wire or the like so as to stop driving the hydraulic motor 51 corresponding to the reel mower 6 when the closing operation is performed. Then, when performing the work while maintaining only one of the left and right reel mowers 6 and 6 in the up posture during the work, the first and second lift cylinders 35, 36 and 36 are operated by operating the second solenoid valve V2. After the hydraulic oil is supplied to raise the three reel mowers 6, 6, and 6, the descent prevention valve V5 corresponding to the reel mower 6 that is maintained in the raised state is closed, so that the oil passage is closed. As a result of the corresponding on-off valve V4 being in communication, even if the second solenoid valve V2 is operated to lower the first and second lift cylinders 35, 36, 36, the reel mower 6 is prevented from lowering, and 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
The switching means is constituted by a structure that allows connection of the support member 65 to the connection surface as a support portion between the front surface and the rear surface of the flange 64, and the switching member connects the support member 65 to the front surface side of the flange 64. The front ground roller 49
The distance D in the front-rear direction between the reel blade 47 and the reel blade 47 is increased, so that the time required for the turf depressed by the large-diameter portion 49c of the front ground roller 49 to reach the position of the reel blade 47 is extended, and the standing posture is increased. When the support member 65 is connected to the rear surface 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, and The ability to follow small irregularities on the ground can be enhanced, and the configuration that enables the change of the distance is as simple as forming the flange 64. The change can also be made by coupling with the bolt 66. This is a relatively simple operation of changing the form.

In particular, in the present invention, the left and right side wall members 45 are provided.
Since the flanges 64 are formed by bending the front end portions of the a and 45a, the strength of the front end portions of the left and right side wall members 45a and 45a can be increased. Since the main frame 40 is provided in a state where the left and right support members 52 are connected to each other, the reel mower 6 is provided.
Can exert a strong forward movement force on
Moreover, the position where the forward moving force acts is the reel blade 47.
, The reel mower 6 is towed like a caster, thereby preventing the lateral swing from occurring and stabilizing the posture of the reel mower 6 during forward movement. I have.

[Other Embodiments] In the present invention, in addition to the above-described embodiment, for example, the switching means is constituted by a link mechanism, and the front and rear rollers or the front and rear positions of the reel blade are adjusted by operating the link mechanism. It can also be configured to do so.

In the present invention, instead of the embodiment, for example, the lower end of the support member 52 in FIG. 8 can be connected to the portion of the support member 65 so as to be freely pitchable around the axis in a horizontal posture. In this case, the posture of the wheel mower 6 at the time of work becomes more stable.

[Brief description of the drawings]

FIG. 1 is an overall side view of a lawn mower.

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

FIG. 3 is a front view of the lawn mower.

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

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

FIG. 6 is a side view of a lifting / lowering structure of a first arm.

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

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

FIG. 9 is a longitudinal sectional side view of a reel mower.

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

[Explanation of symbols]

 40 Main frame 45 Case 47 Reel blade 48 Fixed blade 49 Grounding roller 52 Post 64 Flange 65 Support member

Claims (4)

[Claims] 1. A reel blade which is driven and rotated around an axis centered in a lateral direction with respect to a case, and a fixed blade disposed near the ground side of the reel blade, and a reel is provided at a front position of the case. A reel mower that supports a ground roller having a length extending over the entire width of the cutting width of the blade around an axis in a horizontal position, comprising switching means for allowing a change in a distance between the ground roller and the reel blade in the front-rear direction. Reel mower. 2. The switching means includes a support member for pivotally supporting both end portions of the ground roller, and a support portion allowing 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 a change in the distance between the ground roller and the reel blade in the front-rear direction is allowed by changing the connection position of the reel mower. 3. The support portion is constituted by a vertical wall-shaped flange projecting laterally to a side portion at a front position of the case, and a front surface and a rear surface of the flange have support surfaces of the support member. By changing the state 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 distance between the ground roller and the reel blade in the front-rear direction can be changed. 3. A reel mower according to claim 2, wherein said flange is configured as said switching means. 4. A main frame having a horizontally long posture for connecting upper ends of support members extending upward from positions near the respective right and left flanges, and a forward moving force is applied to the main frame. The reel mower according to claim 3, wherein: