JPH09275741A - Grass collector for midmount mower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly perform the operation of grass collection into a collector in a midmount mower and to simplify the arrangement of a blower. SOLUTION: In the midmount mower for a tractor, a grass eject hole 3 on a mower deck 2 attached/detached to/from a vehicle body 1 so as to be vertically moved, and a blower 6 mounted in front of a rear wheel transmission case 5 arranged between rear wheels 4 at a central part in the breadthwise direction of the vehicle body 1 are linked through a guide cylinder 7, and an exhaust cylinder 8 of this blower 6 is communicated through the upside part of the rear wheel transmission case 5 to the collector mounted at the rear part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mid-mount mower grass collecting device for a tractor and has a simple structure and is intended to smoothly convey and store grass cut by a mower to a rear collector.

[0002]

When the grass is carried into the collector in the mid-mount mower, the grass is conveyed directly from the mower deck to the rear of the vehicle body by the guide tube, and is conveyed to the upper part of the collector by the thrower provided on the lower rear side of the vehicle body. However, when the mower deck is moved up and down with respect to the vehicle body, it is difficult to smoothly perform transfer and transfer at the connecting part from the mower deck to the guide tube and at the connecting part from the guide tube to the lower, etc., causing transfer jams. easy.

[0003]

SUMMARY OF THE INVENTION In a mid-mount mower of a tractor, the present invention is directed to a weed exit 3 of a mower deck 2 which can be lifted up and down with respect to a vehicle body 1 and attached to and detached from the vehicle body 1, and a rear wheel at a central portion of the width of the vehicle body 1. 4 is connected by a guide cylinder 7 to a blower 6 mounted in front of the rear wheel transmission case 5, and a discharge cylinder 8 of the blower 6 passes through an upper portion of the rear wheel transmission case 5 and a collector mounted in the rear portion. The construction of the grass collecting device is made to communicate with 9.

[0004]

Although the mid-mounted mower deck 2 is moved up and down with respect to the vehicle body 1, the weed outlet 3 of the mower deck 2 and the blower 6 are always in communication with each other by the guide tube 7. The grass mowed by the rotation of the blades in the mower deck 2 is sucked into the blower 6 from the grass outlet 3 through the guide cylinder 7, and is further conveyed from the blower 6 through the discharge cylinder 8 into the upper rear collector 9.

Since the blower 6 and the discharge tube 8 for carrying the cut grass are arranged from the front side of the rear wheel transmission case 5 of the vehicle body 1 through the upper side portion to the upper rear portion, they are fixed in position relative to the vehicle body 1. It is fixedly provided on the rear side, and the conveying path to the collector 9 in the upper rear part can be made to have a gentle inclination angle so that the conveying can be smoothly performed, and moreover, between the weed outlet 3 of the mower deck 2 and the blower 6. Even if the guide cylinder 7 moves or expands or contracts due to the elevation of the mower deck 2, the grass outlet 3 and the blower 6 are provided close to each other, so that the blower 6 maintains a strong suction and conveyance force. Therefore, it is possible to perform a fast cutting process.
Further, the blower 6 and the discharge cylinder 7 are connected to the rear wheel 4 as described above.
Since the discharge cylinder 7 is disposed inside the vehicle and above the rear wheel transmission case 5, the width of the machine body can be narrowed and the configuration can be simplified.

[0006]

EXAMPLE A tractor body 1 has front wheels 10 and rear wheels 4 which can be steered by a steering wheel.
The four-wheel drive mode allows the vehicle to be driven and driven by the engine E mounted on the front part.
It is in a mid-mount form that is mounted on the lower side of the vehicle body 1, that is, the abdomen between 0 and the rear wheel 4. The collector 9 for accommodating the grass cut by the mower is mounted and supported by the collector frame 11 at the rear end of the vehicle body 1.

The rear wheel 4 is axially mounted on the front end portion of a rear axle housing 12 which is provided on the left and right sides of a rear wheel transmission case 5 at the center of the rear portion of the vehicle body 1. The engine E is interlocked with the hydraulic continuously variable transmission HST provided in the rear wheel transmission case 5 via the transmission shaft 13, and the traveling speed is changed from the neutral position to the forward / reverse direction by the shifting operation of the hydraulic continuously variable transmission HST. Continuously variable speed can be achieved over the high speed position.

The mower deck 2 is equipped with a blade shaft 15 having a plurality of blades 14 on the lower side, a grass outlet 3 is provided on the upper rear side of the central portion, and a grounding wheel 16 and a gauge wheel 17 are provided at the front and rear. It is arranged and mounted on the vehicle body 1 via a pair of front and rear parallel links 18 and 19 so as to be movable up and down. A gear case 20 having a transmission gear for transmitting the blade shafts 15 is provided on the upper part of the mower deck 2, and the input shaft 21 is transmitted from the front portion of the vehicle body 1 via the power take-off shaft 22 to allow the blades 14 to move. Is configured to be rotatable.

Further, when the mower deck 2 is moved up and down with respect to the vehicle body 1, the hydraulic cylinder 23 provided on the vehicle body 1 is expanded and contracted so that the parallel link 19 is vertically rotated via a bell crank 24 and the like. . Blower 6
At the rear side of the transmission case 5, the weed hole 3 of the mower deck 2
Above, it is attached to the vehicle body 1. The fan shaft 25 of the blower 6 is interlocked with the input shaft 26 of the hydraulic continuously variable transmission HST via a gear transmission in a gear case 27, a belt tension clutch 28, and the like. A suction bellows opening on the lower side of the blower 6 and the weed exit 3 of the mower deck 2 directly below the blower 6 are connected by an expandable and contractible bellows-shaped guide cylinder 7, and the grass is cut and harvested in the mower deck 2. The grass can be sucked and conveyed into the blower 6 through the guide cylinder 7.

The discharge tube 8 communicating with the discharge port of the blower 6 is inclined toward the upper center portion of the collector 9 at the rear of the cockpit through the upper side of the rear wheel transmission case 5, and the discharge tube 8 from the blower 6 The grass is sucked into the collector 9 by the use of compressed wind force. In addition, 30 is a radiator, 31 is a radiator fan, and 32 is a control floor. 4 to 6, a point different from the above example is that the collecting passage 33 for collecting and cutting the grass of the mower deck 2 is formed from the left and right sides toward the upper rear side, and the rotation direction of the blade shafts 15 on the left and right sides is changed. It works in a symmetrical manner from the front side toward the inner circumference around the outer circumference.
A reversing gear is provided in the gear case 20 to reciprocally transmit the blade shaft 15 on one side through the reversing shaft 34.

The guide tube 7 communicates with the collecting passages 33 on the left and right sides at the rear portion of the mower deck 2, and the rear end portion of the blower 8 is mounted on the vehicle body 1 with the rear end portion closer to one side of the upper portion.
Communicate with. The blower 6 is mounted on the vehicle body 1 with the fan shaft 25 in the horizontal direction, and is disposed between the mower deck 2, the weeding port 3 of the grass collecting passage 33 and the suction port 29 of the blower 6 at both ends of the guide cylinder 7. The guide cylinder 7 is connected to the suction port 2 by moving the mower deck 2 up and down.
It is configured so that it can be rotated up and down about nine turns. Further, the guide cylinder 7 is configured to be rotatable by a cylinder joint 35 in the middle thereof.

Further, the guide cylinder 7 is provided so that its inclination direction is substantially parallel to the parallel links 18 and 19 and has the same length, and the guide cylinder 7 is rotated vertically as the mower deck 2 is moved up and down. The movement is performed smoothly, and the communication relationship between the weeding opening 3 and the suction opening 29 is maintained constant. The belt tension clutch 28 of the blower 6 is configured to interlock with the power take-out shaft 36 of the rear wheel transmission case 5.

In such a structure, the grass collection passage 33 of the mower deck 2, the guide cylinder 7, the discharge cylinder 8 of the blower 6 and the like are arranged in an upward slope from the mowing ground toward the collector 9. Therefore, it is possible to smoothly carry the grass. Reference numeral 37 is a steering wheel, and 38 is a cockpit. 7 and 8, the difference from the above example is that the weeding port 3 of the mower deck 2 is provided with the suction port 29 of the blower 6.
Is directly rotatably connected, and the discharge cylinder 8 communicating with the discharge port side of the blower 6 is communicated with the collector 9 in the upper rear part. In this case, the belt tension clutch 28 is provided between the upper end of the blade shaft 15 on the gear case 20 and the fan shaft 25.

9 and 10, the difference from the above example is that a discharge port 39 is provided at the lateral end of the mower deck 2 and between the discharge port 39 and the upper portion of the collector 9 mounted at the rear end of the vehicle body 1. A conveyor 42 is provided in which the endless belt 40 is stretched and driven to obtain a carrying force in combination with the suction carrying force of the blower 41 on the terminal side. Endless belt 4
0 is wound between the upper and lower pulleys 43 and rotated in the conveyor case 44. A side surface belt 45 is formed on one side of the endless belt 40 in a right angle direction and has an intake hole 46. , These endless belts 40 and side belts 45
Has elasticity and forms lugs 47 at regular intervals.
The conveyor case 44 has a conveying passage 48 on the side where the lug 47 passes, and an intake passage 50 communicating with the intake port 49 of the blower 41 on the back side of the side belt 45. The discharge port 51 of the blower 41 is provided so as to face the supply port 52 of the collector 9 at the terminal end of the conveyor case 44. The grass conveyed is blown off to the supply port 52.

The interlocking of the conveyor 42 is configured to transmit the pulley 43 from the gear case 20 on the mower deck 2 via the interlocking shaft 53. Also, the blower 41
Is electrically rotated by a motor M. Reference numeral 54 is a hook for opening and closing the collector 9, and 55 is a lever for operating the hook 54 and the like. At the same time as cutting the grass on the mower deck 2, the conveyor 42 is transmitted, and the motor M sucks and exhausts the inside of the conveyor 42. The suction air from the blower 41 is sucked from the exhaust port 39 of the mower deck 2, is sucked into the intake passage 50 through the intake hole 46 of the side belt 45, and is further blown from the intake port 49 to the blower outlet 51 through the blower 41. From the intake hole 46 of the side belt 45 at the end of the conveyor 42 to the supply port 52 of the collector 9.
It is blown out to the side.

The turfgrass supplied from the discharge port 39 of the mower deck 2 to the transport passage 48 by the rotation of the endless belt 40, the side belt 45, and the lug 47 between them by driving the conveyor 42 is directed to the collector 9 side. It is conveyed and blown out and supplied to the supply port 52. Since the suction pressure from the suction hole 46 of the side belt 45 is working in the transport passage 48, the transport action of the turf grass is accurately performed together with the action of the lug 47. The intake passage 50 is not provided in the return stroke of the side belt 45.

[Brief description of drawings]

FIG. 1 is a side view of a mower deck section.

FIG. 2 is a plan view thereof.

FIG. 3 is a perspective view thereof.

FIG. 4 is a side view showing another embodiment.

FIG. 5 is a plan view thereof.

FIG. 6 is a perspective view of the mower deck section.

FIG. 7 is a plan view of a mower deck portion showing another embodiment.

FIG. 8 is a side view and a perspective view of a part thereof.

FIG. 9 is a side view showing another embodiment.

FIG. 10 is a rear view of a part thereof and a perspective view of a part thereof.

[Explanation of symbols]

 1 vehicle body 2 mower deck 3 weed exit 4 rear wheel 5 rear wheel transmission case 6 blower 7 guide tube 8 discharge tube 9 collector

Claims (1)

[Claims] 1. In a mid-mounted mower of a tractor, a rear wheel transmission arranged between a weeding opening 3 of a mower deck 2 which is vertically movable with respect to a vehicle body 1 and a rear wheel 4 at a central portion of the width of the vehicle body 1. A guide tube 7 is connected to a blower 6 mounted on the front of the case 5, and a discharge tube 8 of the blower 6 is communicated with a collector 9 mounted on the rear side through an upper portion of the rear wheel transmission case 5. apparatus.