JP2006304660A - Sulky lawn mower - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a front mower-type sulky lawn mower having a comparatively compact formation, which formation can easily remove clogged lawn grass when the lawn grass is clogged in a chuter. <P>SOLUTION: The lawn mower is equipped with a mower 6 having a cutter 5, a thrower 23 air-conveying lawn grass reaped with the mower 6, chuters 26 and 27 transferring lawn grass transferred with the thrower 23, and a collector bag 14 storing lawn grass transferred with the chuters 26 and 27, each supported on a traveling vehicle 2. The sulky lawn mower is arranged with the front mower 6 having the lawn mowing cutter 5, the thrower 23 for air-conveying the lawn grass reaped with the mower 6 and a mower side chuter 27 of an air-transfer path of the lawn grass at a belly lower part of the traveling vehicle 2 lower than a floor 7, has an openable cover 42 for maintenance of the cutter 5 and the thrower 23 on a floor 7 and has a control part 33 stopping drive of the cutter 5 and/or the thrower 23 when a sensor 30 for detecting opening operation of the openable cover 42 detects opening operation of the openable cover. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a riding lawn mower in which a mower that performs ground work such as lawn mowing is mounted below a vehicle body.

A so-called front mower type riding lawn mower in which a lawn mower (moor), which is a typical example of a ground working machine, is mounted on the front of a vehicle body is disclosed in Japanese Patent Laid-Open No. 5-76231. This riding lawn mower collects turf grass mowed by moor on a collector back at the rear of the vehicle body via a shooter disposed on the side of the vehicle body.
Further, as disclosed in Japanese Patent Application Laid-Open No. 2004-65114, the vehicle body is provided with a mower below the abdomen of the vehicle body and turf grass cut by the mower is disposed between the left and right rear wheels in the vehicle body width direction. A riding lawn mower that collects grass in the collector back at the rear is known.
JP-A-5-76231 JP 2004-65114 A

The conventional front mower-type riding lawn mower has a structure in which a shooter is provided on the side of the vehicle body, so that the vehicle width is wide, turf grass is likely to remain uncut, and it is easy to contact obstacles when turning during work. There was a problem.
Further, in the configuration in which the shooter of the front mower type riding lawn mower is arranged between the left and right wheels, there is a problem that it is difficult to remove the turf when the turf is clogged in the shooter.
SUMMARY OF THE INVENTION An object of the present invention is to provide a riding lawn mower that has a relatively compact configuration and can easily remove turf grass when it is clogged in a shooter.

The above-mentioned problem of the present invention is solved by the following means.
The invention according to claim 1 is a mower (6) having a cutter (5), a throttle (23) that blows and conveys turf grass cut by the mower (6), and turfgrass conveyed by the throttle (23). In a riding lawn mower in which a traveling vehicle body (2) supports a shooter (26, 27) that transports a turf and a collector back (14) that houses turfgrass transported by the shooter (26, 27). And the mower side shooter (27) are arranged below the floor (7) below the abdomen of the traveling vehicle body (2), and the maintenance lid for the cutter (5) and the throttle (23) of the mower (6) (42). Is provided on the floor (7), a sensor (30) for detecting the opening operation of the opening / closing lid (42) is provided in the vicinity of the opening / closing lid (42), and the sensor (30) opens the opening / closing lid (42). Is detected, the cutter (5 A and / or Suroa (23) riding lawn mower having a control unit for stopping (33) the driving of the.

  According to the second aspect of the present invention, a cockpit (11) is provided on the floor (7), and the cockpit (11) is also integrated with the opening / closing lid (42) of the floor (7) to be opened and closed. The riding lawn mower according to claim 1, wherein the upper part of the side shooter (27) is also openable and closable.

  According to the first aspect of the present invention, when the sensor (30) detects the opening operation of the maintenance opening / closing lid (42), the driving of the cutter (5) and / or the throttle (23) of the mower (6) is stopped. Therefore, the mower (6), the shooter (27) and the throttle (23) can be inspected and repaired safely.

  According to the invention described in claim 2, when the cockpit (11) is integrated with the opening / closing lid (42) of the floor (7) and can be opened and closed, and the upper part of the mower side shooter (27) can also be opened and closed, the moor side The inside of the shooter (27) can be easily checked.

Embodiments of the present invention will be described below with reference to the drawings.
A side view of the riding lawn mower 1 of this embodiment is shown in FIG. 1, and a plan view is shown in FIG.
The front and rear portions of the traveling vehicle body 2 are provided with front wheels 3, 3 and rear wheels 4, 4, respectively, and a mower 6 for turf mowing having a cutter 5 is provided below the front portion of the vehicle body 2, A steering column 8 is erected on the floor 7 above the section, and a handle 10 is provided above the column 8. A cockpit 11 is provided behind the steering wheel 10, and a hood 34 incorporating the engine 12 and the radiator 9 is arranged behind the cockpit 11, and a front gate type collector is disposed so as to surround the hood 34. A back 14 is provided. A pair of collector elevating links 17 are rotatably attached to both sides of the pair of lops 13 and the collector back 14 that are erected on the left and right side surfaces of the rear portion of the cockpit 11 of the body frame 2.

  As shown in the side view of FIG. 1, the riding lawn mower 1 of the present embodiment has the front end of the front mower 6 for rear wheel steering and the front end of the floor 7 arranged at substantially the same front and rear positions in a side view of the lawn mower. The seating positions of the axle 3a and the operator's cockpit 11 are also arranged at substantially the same front and rear positions in a lawn mower side view.

  If the front end of the floor 7 is too far ahead of the front end of the mower 6, turf grass can be left uncut, and if the front end of the floor 7 is too far behind the front end of the mower 6, it is difficult to align the turf grass. Furthermore, if the front end of the floor 7 and the front end of the mower 6 are substantially in the same front-rear position when viewed from the same lawn mower side view, the distance between the obstacle and the mower 6 can be easily understood when moving forward at the wall, etc. Is good. Further, the operator of the cockpit 11 is directly above the front wheel 3 and is seated at a position close to the turning shaft (axle 3a), and the operator is shaken when the lawnmower 6 turns. Difficult and easy to operate.

  The mower 6 is connected to the other end of a link arm 38 whose end is pivotably attached to the vehicle body 2, and the link arm 38 is operated by operating a mower lifting lever 39 disposed on the side of the cockpit 11. The cylinder 6 attached to the vehicle body 2 can be operated to move the mower 6 up and down.

  The output of the engine 12 is input to the transmission case 15 via the universal joint 35 via the HST 19, the rotational power of the engine 12 is changed by the transmission, and the rear wheels 4 and 4 are driven by the changed running power.

  Further, a throttle drive shaft 20 is provided on the upper front side of the transmission case 15, and a PTO shaft 16 is provided on the lower side to transmit power from the PTO shaft 16 to the mower drive shaft 18. The throttle 23 is operated by the power from the transmission that is transmitted to the throttle drive shaft 20 via the throttle on / off clutch 41. Further, power from the transmission is transmitted to the PTO shaft 16 via the PTO on / off clutch 40. Since the mower drive shaft 18 is connected to the PTO shaft 16, power is transmitted to the mower drive shaft 18 through the PTO shaft 16, and the mower 6 is driven.

  The throttle 23 is accommodated in the throttle case 24, and a collector-side shooter 26 for conveying turf grass connecting the throttle case 24 and the collector back 14 is provided on the upper part of the throttle case 24. Further, a mower side shooter 27 is disposed between the throttle 23 and the mower 6, and the turf grass cut by the mower 6 passes through the mower side shooter 27 and the collector side shooter 26, and the collector back 14 on the rear side by the throttle 23. To be conveyed by air.

  Since the PTO shaft 16 and the mower drive shaft 18 are provided on the front surface of the transmission case 15, and the throttle case 24 is directly connected adjacent to the case 15, the mounting structure of these two cases 15 and 24 is simplified, and Can be connected firmly.

  Power is transmitted to the rotary shaft of the cutter 5 of the mower 6 via the clutch that is controlled by an electromagnetic valve to the mower drive shaft 18, and becomes the rotational power of the cutter 5.

  The cockpit 11 of the riding lawn mower according to the present embodiment is located above a rotating shaft 36 provided on the floor 7 together with a seat floor (opening / closing lid) 42 which is a part of the floor 7 as shown by a dotted line in FIG. When a part of the floor 7 is opened, the mower side shooter 27 and the throttle 23 can be maintained as shown in FIG.

  Also, as shown in FIG. 3, if the upper half 27a (ceiling sensor and partial side plate) of the mower side shooter 27 can be opened and closed, the shooter upper half 27a can be opened when a part of the floor 7 is opened. The shooter 27 and the throttle 23 can be maintained, for example, by removing clogs such as turfgrass inside the shooter 27 and the throttle 23 and the throttle case 24.

  As described above, when the cockpit 11 and the floor 7 are partially opened, a safety device is provided in the drive system of the mower 6 and the blower 23 so that the drive of the mower 6 and the blower 23 is turned off. The safety device is configured such that a switch 30 for detecting the opening of part of the cockpit 11 and the floor 7 and an electromagnetic valve for operating the clutch of the throttle 23 are linked to the switch 30. The switch 30 for detecting the opening of a part of the cockpit 11 and the floor 7 is provided on the floor 7 below the cockpit 11.

  When the clutch 40 provided on the throttle drive PTO shaft 16 and the clutch (not shown) provided on the mower drive shaft 18 are both configured by a combination of a hydraulic pack and an electromagnetic valve, A wire (not shown) linked to the operation of opening a part of the floor 7 is provided, and the hydraulic pressure for operating the clutch 40 of the PTO shaft 16 and the clutch of the mower drive shaft 18 by the traction force of the wire linked to the opening operation of the floor 7 or the like. A configuration in which the pack is turned off and the throttle 23 and the mower 6 are stopped may be employed.

  FIG. 4 shows a block diagram of the control device 33. A switch 30 is connected to the control device 33, and a throttle drive unit and a cutter drive unit are connected. When the control seat 11 and a part of the floor 7 are opened by the switch 30, the malfunction of the throttle 23 or the mower 6 is prevented.

  The switch 30 and the wire can prevent malfunction of the throttle 23 or the mower 6 when part of the cockpit 11 and the floor 7 is opened, thereby preventing injury to the worker and improving safety. .

  The present invention is highly useful as a domestic lawn mower for industrial use.

1 is a side view of a riding lawn mower according to an embodiment of the present invention. It is a top view of the riding lawn mower of FIG. It is a perspective view of the structure which can open and close the upper half of the mower side shooter of the riding lawn mower of FIG. FIG. 2 is a control block diagram for preventing malfunction of a throttle or mower when a part of a cockpit and a floor is opened by a switch of the riding lawn mower of FIG. 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Riding lawn mower 2 Traveling vehicle body 3 Front wheel 3a Front wheel axle 4 Rear wheel 5 Cutter 6 Moore 7 Floor 8 Steering column 9 Radiator 10 Handle 11 Pilot seat 12 Engine 13 Lops
14 Collector Back 15 Mission Case 16 PTO Shaft 17 Collector Elevating Link 18 Moor Drive Shaft 19 HST
Reference Signs List 20 Thrower Drive Shaft 23 Thrower 24 Thrower Case 26 Collector Side Shooter 27 Moore Side Shooter 27a Shuter Upper Half 30 Switch (Sensor) 33 Controller 34 Bonnet 35 Universal Joint 36 Seat Rotating Shaft 37 Moore Lifting Cylinder 38 Link Arm 39 Moore Lifting Lever 40 PTO on / off clutch 41 Thrower on / off clutch 42 Seat floor

Claims (2)

A mower (6) having a cutter (5), a throttle (23) that blows and conveys turfgrass cut by the mower (6), and a shooter (26, 27) that conveys turfgrass conveyed by the throttle (23) And a mower (6) and a mower side shooter (27) are provided on a floor lawn mower in which a collector back (14) that accommodates turf grass conveyed by the shooter (26, 27) is supported on a traveling vehicle body (2). (7) The lower body of the traveling vehicle body (2) below (7) is disposed, and the cutter (5) of the mower (6) and the open / close lid (42) for maintenance of the throttle (23) are provided on the floor (7), A sensor (30) for detecting the opening operation of the opening / closing lid (42) is provided in the vicinity of the opening / closing lid (42), and when the sensor (30) detects the opening operation of the opening / closing lid (42), the cutter (5) And / or throttle (23 A riding lawn mower characterized by comprising a control unit (33) for stopping the drive.   A cockpit (11) is provided on the floor (7), and the cockpit (11) is also integrated with the opening / closing lid (42) of the floor (7) so that it can be opened and closed, and the upper part of the mower side shooter (27). The riding lawn mower according to claim 1, which is also openable and closable.

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