JP5091883B2 - Riding mower - Google Patents

Description

  The present invention relates to a riding-type grass mower in which a grass collecting container is disposed behind a traveling machine body provided with a driver's cockpit.

  In a riding mower, a viewing window is provided on the side surface of the induction duct that is arranged between the mid-mount mower located between the front and rear wheels and the grass collection container located at the rear of the traveling machine body (name in the publication: internal A configuration has been adopted in which a see-through window 57) is provided, the degree of clogging of the conveying grass in the induction duct is identified, and the accumulation state of the conveying grass in the grass collection container is estimated (see Patent Document 1).

Japanese Examined Patent Publication No. 5-4042 (Gazette, page 3, column 5, lines 29 to 34, FIGS. 2 and 5)

  In the configuration described above, the degree of clogging of the conveying grass in the induction duct can be visually confirmed, and thereby the degree of accumulation of the conveying grass in the grass collection container can be estimated. However, it was not possible to grasp the situation of accumulation in the collection container directly.

  An object of the present invention is to provide a riding type mower that can directly grasp the state of accumulation of transported grass in a grass collection container and has a configuration that is easy to visually recognize.

〔Constitution〕
A characteristic configuration of the invention according to claim 1 is that a grass collection container is disposed behind a traveling machine body provided with a driver's cockpit, and the interior of the grass collection container is disposed on an upper surface in a tilted upward state of the grass collection container. Thea forming a viewing window that can be viewed is, the duct for supplying to said grass catcher mowed grass is in the grass collection container, it extends along the width direction of the vehicle body, the duct when viewed The downstream end portion of the chopped grass in the conveying direction is overlapped with the rear portion of the viewing window , and the effects thereof are as follows.

[Action]
Since the observation window is formed on the upper surface of the grass collection container, it is possible to directly confirm the state of accumulation of the conveying grass in the collection container through the observation window.
Moreover, since the top surface of the grass collection container provided with the viewing window is inclined upward, the operator does not have to look into it from above, and it is easy to sit in the driver's cockpit. It can be visually recognized.

〔effect〕
Therefore, it has become possible to propose a riding-type mower that can reliably grasp the state of accumulation in the grass collection container and can make the confirmation posture easy.

〔Constitution〕
The characteristic configuration of the invention according to claim 2 is that a portion of the duct located in the grass collection container is open downward.
The characteristic configuration of the invention according to claim 3 is configured such that a lops is erected between the driver's cockpit and the grass container, and the lops can be switched between an upright posture and a rearward tilting posture. In the posture, the lops are configured to be switched to the posture along the upper surface of the grass collecting container, and the effects thereof are as follows.

[Function and effect]
When performing mowing work in an orchard or the like, it is necessary to lay the lops in a back-down position from the viewpoint of avoiding contact with tree branches and the like. In that case, the lops can be switched to a post-tilt posture along the top surface of the grass collection container inclined, so work should be done while lowering the lops height and avoiding contact with tree branches etc. We have been able to propose a riding mower that makes it possible.

〔Constitution〕
A characteristic configuration of the invention according to claim 4 is that the lops are formed in a gate shape at a lateral part connecting the upper ends of the legs and the legs standing from the right and left, and the lops are tilted backward along the upper surface. In the state switched to the posture, the viewing window is configured to be positioned in a space surrounded by the both leg portions and the lateral portion, and the operation and effect thereof are as follows.

[Function and effect]
When the lops are set in the rearward tilting position along the top surface of the grass collection container, the viewing window is located in the space surrounded by the legs and the side parts that make up the lops, so switch the lops to the rearward tilting position. When working, we have been able to propose a riding-type grass mower that makes it easy to visually check the state of mowed grass accumulation in the collection container without being obstructed by the legs or side portions of the lops.

1 is an overall side view of a riding mower. 1 is an overall plan view of a riding mower. It is a side view which shows the attachment state of a lops and a grass container. It is a side view which shows the state which switched the lops to the back-down position. It is a side view which shows the state which switched the cover body part of the grass collection container to the attitude | position. The labyrinth structure of a container main-body part and a cover body part is shown, (a) shows the state which switched to the attitude | position which closed the cover body part, (b) is the side surface which shows the state switched to the attitude | position which opened the lid part FIG. It is a top view which shows the structure which can move and adjust a blower position when switching to the mower from which a blade diameter differs. It is a vertical side view which shows the duct inserted in the grass container. It is a side view which shows a self-supporting leg. It is a top view which shows the relationship between a lops and a viewing window in the state which switched the lops to the fall-down position.

[Overall configuration of riding mower]
FIG. 1 shows the entire side surface of the riding mower according to the present invention, and FIG. 2 shows the entire plane. This riding-type mower includes a pair of left and right front wheels 11 configured as caster-type idler wheels on the front end side of the body frame 10, and a pair of left and right drive wheels on the rear end side of the body frame 10. A traveling machine body 1 is configured with a wheel 12, and a bar blade type mower 4 is suspended and supported between the front and rear wheels of the traveling machine body 1 so as to be movable up and down.

In the rear part of the traveling machine body 1, a prime mover 2 in which a water-cooled diesel engine 21 and a radiator 27 are accommodated in an engine bonnet 20 is provided in a rear frame portion of the machine body frame 10, and at the front and rear intermediate parts of the traveling machine body 1. Is provided with a driver's cockpit 13.
A step 15 located at the foot of the driver's cockpit 13 is mounted and mounted on the front frame portion of the body frame 10, and fenders 16 are provided on the left and right sides of the driver's cockpit 13. Behind the driver's cockpit 13, there is provided a grass collection container 30 for accommodating the grass transported from the mower 4, and self-standing legs 43 are mounted on both side surfaces of the grass collection container 30.

  Between the driver's cockpit 13 and the grass collection container 30, a gate-shaped lops 14 is fixed upright in an upright posture. As shown in FIGS. 1, 3 to 5, and 10, the lops 14 includes left and right base end portions 14 </ b> A that protrude upward through the fender 16, and a fulcrum X <b> 1 around the upper ends of the left and right base end portions 14 </ b> A. It is comprised with the gate-shaped flame | frame part 14B continuously arranged so that folding is possible back.

The portal frame portion 14B is switched between a standing posture and a back-falling posture in an up / down posture. By switching the gate-type frame portion 14B to the post-tilt posture, the work can be performed without being caught by a branch protruding when mowing around the trunk of the tree.
A positioning pin hole 14a is formed at the upper end of the left and right base end portions 14A, and a circular positioning disc 14C is attached to the lower end position of the portal frame portion 14B. A positioning pin hole 14b is formed.

  With such a configuration, as shown in FIG. 3, when the portal frame portion 14B is set in the vertical position, one pin hole 14b of the positioning disk 14C and the pin hole 14a of the base end portion 14A are on the same axis. The portal frame portion 14B is maintained in the up-and-down posture by positioning and inserting the positioning fixing pin 14c through the pin holes 14a and 14b.

  From this vertical position, the positioning fixing pin 14c is removed, and as shown in FIGS. 4 and 10, the portal frame part 14B is switched to the backward tilted position, and the other pin hole 14b of the positioning disk 14C and the pin of the base end part 14A are switched. When the hole 14a coincides with the same axis, the positioning and fixing pin 14c is inserted through the pin holes 14a and 14b so that the portal frame portion 14B is tilted backward to maintain the posture. Can do.

  As will be described later, in the state where the gate-type frame portion 14B is switched to the rearward tilted posture, the gate-type frame portion 14B is along the upper surface of the container body portion 31 of the grass collection container 30 that is in the upwardly inclined state. It is a posture.

[Transmission structure to moor etc.]
The hydrostatic continuously variable transmission 25 that drives the left and right rear wheels 12 swings a pair of left and right traveling levers 17 arranged on both sides of the driver's cockpit 13 so as to be swingable back and forth. Thus, the left and right rear wheels 12 are independently steplessly shifted forward and backward.
From the neutral stop state shown in FIG. 1, the left and right traveling levers 17 can be operated in the same direction in the same direction, and can move forward and backward, and the left and right separately can perform a pivot turn and a spin turn. Yes.

[Moore configuration]
The mower 4 has a structure supported by being suspended through a link mechanism 18 having a four-link structure. The mower 4 is arranged in a triangular manner in a plan view so that the three rotating blades 41 that are driven to rotate about the longitudinal axis center are slightly displaced forward in the interior of the mower deck 40 that is opened downward. Thus, when the traveling machine body 1 moves straight forward, the left and right ends of the tip rotation trajectories of the adjacent rotary blades 41 partially overlap so that no mowing is left without cutting. It can be done.

  A blower 28 is attached to the right end of the mower 4 via a support frame 26. A guide duct 29 is connected to the rear end discharge port side of the blower 28, and the rear end sending portion 29 </ b> A of the guide duct 29 is connected to the front surface of the grass collection container 30 so that the mowing grass cut by the mower 4 is collected. 30 to be put in.

  Next, a response when the specification of the mower 4 is changed will be described. As shown in FIG. 7, when switching to a large mower 4 having a different blade diameter, the discharge port for the blower 28 of the mower 4 is conventionally at a different position. Therefore, a support frame 26 that supports the blower 28 is used as a dedicated frame. It was replaced with something.

In contrast, in the present invention, the support frame 26 and the like are modified. The support frame 26 itself has the following configuration.
That is, the support frame 26 is formed by bending a pipe frame into a U-shape. One end 26A of the U-shaped pipe frame is inserted into the boss portion 4a of the mower deck 4A, and a bracket 26b is attached to the other end 26B. Bolts are connected to the bracket 4b on the mower deck 4A side.

On the other hand, the case 28A of the blower 28 is provided with a front bracket 28a and a lateral bracket 28b at the front end portion and the lateral right end portion. The front bracket 28a is placed on the front frame portion 26A of the support frame 26, and the lateral bracket 28b is placed on the lateral frame portion 26B of the support frame 26 and fixed with bolts.
When switching from this state to the large mower 4, the position of the mower 4 is changed rearward from the position shown in the figure as indicated by the phantom line, and the bolting positions of the front bracket 28a and the lateral bracket 28b are changed. Accordingly, it is possible to cope with a change in the size of the mower 4 without replacing the support frame 26.

  In the above configuration, when the size of the mower 4 is switched, the configuration in which the blower 28 is moved and adjusted with respect to the support frame 26 is shown, but a configuration in which the support frame 26 itself is adjusted may be adopted. Although not shown, the intermediate position of the U-shaped pipe frame is configured to be extendable and the support frame 26 is configured of two extendable members. When changing the size of the mower 4, one of the two members constituting the support frame 26 is moved together with the blower 28 to adjust the movement so as to coincide with the position of the outlet of the mower 4. Also good.

  The amount of insertion of one end 26A of the support frame 26 into the boss portion 4a of the mower deck 4A is changed, and the bracket 26b of the other end 26B is changed in the bolt connection position with respect to the bracket 4a on the mower deck 4A side. It is possible to adjust the mounting position in the left-right direction of the aircraft.

[Induction duct]
As shown in FIGS. 2 and 8, the guide duct 29 maintains a substantially constant inclination from the connection portion 29 </ b> B with the blower 28 to the rear end delivery portion 29 </ b> A connected at the front right portion of the grass collection container 30. It is formed linearly. In the grass collection container 30, the guide duct 29 is formed such that its in-container discharge portion 29C is bent toward the left-right center position of the grass collection container 30, and extends to the vicinity of the left-right center position.
However, the portion of the induction duct 29 located in the grass collection container 20 is cut at the lower half of the cylindrical duct, and the transport cut grass is dropped and supplied into the grass collection container 30 from this notch. It is like that.

  Conventionally, it is formed to be bent at a substantially right angle just before being connected to the grass collection container 30 and inserted into the grass collection container 30 in a state in which the posture of the connecting portion of the duct is changed in the left-right direction. On the other hand, since the guide duct 29 is linearly inserted into the grass collection container 30 without bending, clogging during the conveyance can be suppressed.

[Composition of grass collection container]
As shown in FIGS. 3 to 5, the grass collection container 30 is attached to a container main body 31 that is attached and fixed to the machine body frame 10, and is swingably attached to the rear end of the container main body 31 around the horizontal axis X <b> 2. And the lid part 32.
The container main body 31 has a box-like body having a substantially inverted triangular cross section when viewed from the side, and is configured by combining and arranging a frame frame 31A made of square material or the like. The outer surface of the frame 31A is covered with a porous body 31D having a large number of ventilation holes. A connection arm 31b extends forward from the front surface at the upper end of the container main body 31, and the distal end of the connection arm 31b is bolted to the base end portion 14A of the lops 14. On the other hand, a connecting bracket 31d is provided at the lower end position of the container main body 31, and the connecting bracket 31d is connected to a bracket 10a extending rearward from the engine support frame 10A so that the grass collection container 30 is supported by the body frame 10. The

The connecting bolt 31e is held by a boss part attached to the connecting arm 31b, and a spring for biasing the bolt 31e in the connecting direction is accommodated in the boss part.
With such a configuration, the grass collection container 30 can be removed by releasing the bolt connection between the connection arm 31b and the base end portion 14A of the lops 14.

As shown in FIGS. 1 and 2, the upper surface of the container main body 31 has a rearwardly inclined posture, and a horizontally long opening is formed at the center position of the upper surface to look inside the container main body 31. A viewing window 31B is formed. A transparent resin plate is fitted in the viewing window 31B so as to close the opening.
Thus, since the peep window 31B is formed on the inclined surface, it is easy to peep without turning away from the driver cock seat 13 by turning around from the driver cock seat 13.

  The observation window 31B is positioned immediately above the tip of the in-container discharge portion 29C of the guide duct 29 (see FIG. 8), and the front end of the in-container discharge portion 29C is the right rear portion of the inspection window 31B in plan view. 2 and is formed on the upper surface of the container main body 31 in a state where the discharge portion (the cut grass to be discharged) at the tip of the in-container discharge portion 29C is visible (see FIG. 2). Thereby, it is possible to easily confirm the state of release of the cut grass, that is, the condition, which is released into the container. Further, the viewing window 31B is disposed in a state shifted from the left and right center of the driver's cockpit 13 to the left and right sides (right side in the example of this embodiment) (see FIG. 2). It becomes easier to check the viewing window 31B by turning around.

As shown in FIGS. 4 and 10, the portal frame portion 14B of the lops 14 is formed in a portal shape with a leg portion 14D standing from the left and right and a lateral portion 14E connecting the upper ends of the leg portions 14D. Yes.
As shown in FIG. 10, the viewing window 31 </ b> B is configured to be located in a space surrounded by both the leg portions 14 </ b> D and the lateral portion 14 </ b> E in a state where the lops 14 are switched to the rearward tilting posture along the upper surface.
Since it is configured in this manner, even when viewed from the driver's cockpit 13, the viewing window 31 </ b> B can be visually recognized without being obstructed by the legs 14 </ b> D and the lateral portion 14 </ b> E of the lops 14.

[Cover body]
As shown in FIGS. 3 to 5, the lid body portion 32 includes a lid body portion 32 </ b> A formed by bending a pipe material so as to have a substantially rectangular cross section, and a porous body 32 </ b> D covering the lid body portion 32 </ b> A. It consists of. The lid 32 is attached to the container main body 31 so as to be swingable and openable by a hinge 34 provided across the upper surface of the container main body 31 and the upper surface of the lid body 32.
A cover body 33 that further covers the upper half portion of the lid body portion 32 is provided.

The labyrinth structure in the joint part of the lid part 32 and the container main body part 31 will be described. As shown in FIG. 6, a cross-sectional mountain that protrudes rearward at the lower end position of the container main body 31 across the lower end portions of the left and right front end frame frame portions 31 a located at the left and right front end portions of the frame frame 31 </ b> A. A slide guide portion 31E having a shape is provided.
Therefore, the cut grass stored in the container main body 31 is released by sliding on the slide guide portion 31E when the lid body portion 32 is swung open.

  As shown in FIGS. 6 (a) and 6 (b), the lid body portion 32 is provided with lower end pipe portions 32a in a downward inclined posture on the lid body portion 32A on the left and right. A receiving plate 32B is mounted over the lower surface of the lower end pipe portion 32a disposed on the left and right, and the lower end of the receiving plate 32B is mounted in a state of projecting obliquely downward from the lower end pipe portion 32a.

In addition, the lower end position of the slide guide part 31E is located above the lower end position of the left and right front end frame part 31a. With such a configuration, as shown in FIG. 6A, when the lid portion 32 is set in a closed position, the lower end of the lower end pipe portion 32a of the lid portion 32 becomes the guide surface of the slide guide portion 31E. The receiving plate 32B is disposed in a state of approaching and close to the lower surface 31c of the slide guide portion 31E.
With such a configuration, a minute gap is formed between the lower end upward surface 32b of the receiving plate 32B and the downward surface 31c of the slide guide portion 31E, thereby forming a labyrinth structure.

  The opening / closing operation structure of the lid part 32 will be described. As shown in FIGS. 2 to 5, brackets 35 are erected on the left and right ends of the upper surface of the container main body 31, and an opening / closing operation lever 36 is pivotally supported on the left bracket 35. An interlocking arm 37 is pivotally supported at the position of the swing operation axis of the opening / closing operation lever 36 and is configured to swing and operate integrally with the opening / closing operation lever 36.

The opening / closing operation lever 36 includes an operation rod 36A having a grip portion 36a attached to the tip thereof, and a holding case 36B that holds the operation rod 36A slidably in its own axial direction. The holding case 36B is attached to the bracket 35 described above. The shaft is supported so that it can swing up and down.
A holding boss portion 31F for inserting the rear end portion of the operation rod 36A is fixed to the upper surface of the container main body portion 31 behind the bracket 35. As shown in FIGS. The opening / closing operation lever 36 is prevented from swinging by inserting and mounting the rear end of the operation rod 36A. In this state, the lid portion 32 is in a closed state.

  In order to open the lid portion 32, first, the operating rod 36A is slid with respect to the holding case 36B to move forward, and the rear end portion of the operating rod 36A held in the holding boss portion 31F. Pull out to release the holding state. As shown in FIG. 5, when the operation rod 36A is pushed down from the released state, the operation rod 36A and the holding case 36B integrally swing around the axis Y of the bracket 35. In response to the swinging operation of the operating rod 36A and the like, the lid portion 32 is swingably released by the following link structure.

  The link structure is as follows. A bell crank-shaped lock arm 39 is provided at the lower end position of the container main body 31 below the interlocking arm 37. The interlocking arm 37 and the lock arm 39 are linked by a first interlocking link 40 in a vertically oriented posture. On the other hand, the interlocking arm 37 and the upper end of the lid part 32 are linked by a second interlocking link 42 in an oblique posture. A biasing spring 38 is engaged with the lock arm 39, and is configured to bias the lock arm 39 in the locking direction.

On the other hand, as shown in FIG. 2, a bracket 35 is erected on the right end of the upper surface of the container main body 31 and a horizontal interlocking shaft 44 is erected between the left and right brackets 35. Similarly, the interlocking arm 37, the lock arm 39, the first interlocking link 40, and the second interlocking link 42 are also arranged on the right side.
With the configuration as described above, as shown in FIG. 5, when the opening / closing operation lever 36 is pulled out to release the holding state at the holding boss portion 31F and is held down with the left hand, the left and right interlocking arms 37 rotate. Thus, the lid 32 is pushed backward by the second interlocking link 42 while releasing the locking action of the lock arm 39.

[Independent legs]
The self-supporting leg 43 for self-support when the grass collection container 30 is removed will be described. As shown in FIG. 2, the self-supporting legs 43 are attached to both lateral side surfaces of the container main body 31 and arranged on the left and right sides, and are configured by combining pipe materials in a substantially L shape.
As shown in FIG. 9, the self-supporting leg 43 includes a support column 43 </ b> A in an upright posture and a grounding leg 43 </ b> B in a front-rear posture attached in a state orthogonal to the lower end of the support column 43 </ b> A. The support 43A is provided with engaging recesses 43a in a plurality of stages at two locations in the upper and lower directions along the axial direction of the support 43A and at two locations in the circumferential direction at the two locations.
On the other hand, the grounding leg 43B is provided with a strut 43b laterally outward at the front and rear ends.

  As shown in FIG. 9, a bracket 45 is erected on the self-supporting leg 43 rearward from the front end side frame portion 31 a in the frame frame 31 </ b> A of the container main body 31, and a holding boss 46 is fixed to the tip of the bracket 45. An engagement holder 47 that is elastically deformable is attached to the holding boss 46, and an elastic protrusion (not shown) of the engagement holder 47 is engaged with an engagement recess 43a formed on the support post 43A. By combining, the self-supporting leg 43 can be attached and held to the container main body 31.

That is, when the self-supporting leg 43 is not used, as shown in FIG. 9, the support 43A is inserted into the holding boss 46, and the elastic protrusion is fitted into the lower engaging recess 43a, so that The legs 43 are configured to be held by the container main body 31.
When the grass collection container 30 is detached and made self-supporting, although not shown, the support 43A of the self-supporting leg 43 is pushed down so that the upper engaging recess 43a is positioned in the holding boss 46 and elastic. The support 43A can be held by the protrusion, and the grounding leg 43B can be held in a grounded state.

  As a configuration for holding the self-supporting leg 43, the engagement recess 43a of the support column 43A and the elastic projection 47a are engaged, but a configuration in which a set screw or the like is screwed may be employed.

[Another embodiment]
(1) In the above-described embodiment, the upper surface of the grass collection container 30 has been described as being formed as an upwardly inclined surface. However, the grass collection container 30 is mounted in a riding-type grass mower. It is only necessary that the upper surface is set to a rearwardly inclined surface.
(2) In the above-described embodiment, the form applied to the riding mower equipped with the lops 14 has been described. However, the embodiment may be applied to a riding mower not equipped with the lops 14.

  The riding mower according to the present invention can be used not only for work in orchards, but also for mowing golf courses and parks.

DESCRIPTION OF SYMBOLS 1 Traveling machine body 13 Driver's cockpit 14 Lopse 14D Leg part 14E Lateral part 30 Grass collection container 31B Viewing window

Claims (4)

A grass collection container is disposed behind a traveling body equipped with a driver's cockpit, and a viewing window is formed on the upper surface of the grass container that is inclined upward from the rear so that the inside of the grass collection container can be visually recognized. Ah is, the duct for supplying to said grass catcher mowed grass is, the current in the grass container, extends along the width direction of the vehicle body, grass conveyance direction downstream side end the viewing of the duct when viewed A riding-type mower placed overlapping the rear part of the window . The riding-type grass mower according to claim 1, wherein a portion of the duct located in the grass collection container is open downward. A lops is erected between the driver's cockpit and the grass container, and the lops can be switched between an upright posture and a rearward tilted posture, and in the rearward tilted position, the lops are disposed on the grass container. The riding type mower according to claim 1 or 2 , wherein the riding mower is configured to switch to a posture along the upper surface. In the state in which the lops are formed in a gate shape with a lateral portion connecting the upper ends of the leg portions and the leg portions standing from the left and right, and the lops are switched to a rearward tilted posture along the upper surface, The riding type mower according to claim 3 , wherein the viewing window is positioned in a space surrounded by the lateral portion.

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