JPH04258209A - tractor mower collector - Google Patents

Abstract

PURPOSE:To dump cut lawn grass by lifting a collector housing the cut lawn grass to as high a position as possible according to a simple construction. CONSTITUTION:A supporting frame 2 of a suitable height is installed in the front of a car body 1 and parallel links 5 are lifted, lowered or rotated about an upper lifting shaft 3 on the supporting frame 2. A dumping collector 8 is installed in the tip of the parallel links 5.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention relates to a collector for a tractor mower that is mounted on a tractor and stores the cut grass in the collector while mowing, and allows the grass stored in the collector to be easily dumped to a high position. .

0002

[Prior Art and Problems to be Solved by the Invention] In a configuration in which the collector on the vehicle body is lifted to a predetermined height and then dumped, a sufficient height cannot be obtained by simply lifting using a parallel link mechanism or an X-link mechanism. Sometimes there isn't. This is because the loading and storage of grass harvested with mowers often involves dumping at a high position. The present invention aims to eliminate such defects and lift the collector to a higher position to perform a dumping action using a simple structure.

0003

[Means for Solving the Problems] The present invention provides a pair of upper and lower parallel links of appropriate length that are raised and lowered by the expansion and contraction of a lift cylinder 4 around a lift shaft 3 on a support frame 2 at the front of a vehicle body 1. 5 is provided at the rear of the parallel link 5, and a collector 8 is provided at the rear of the parallel link 5 to be rotated around a dump shaft 7 at the rear of the parallel link 5 and dumped by the expansion and contraction of the dump cylinder 6. do.

0004

[Operation and Effects of the Invention] When the collector 8 is lowered onto the vehicle body 1, the grass cut and conveyed from the mower is stored in the collector 8. collector 8
When the turf grass is dumped when the turf is full, the parallel link 5 is raised by the lift cylinder 4, and the parallel link 5 moves around the lift shaft 3 on the support frame 2 installed at the front of the vehicle body 1. Then, the rear end portion is rotated upward, and the collector 8 is also raised in a parallel state. When the dump cylinder 6 performs a dumping action in the raised position of the parallel link 5,
The collector 8 is rotated around the dump shaft 7 at the rear of the parallel link 5 so that the front part faces upward, and the collector 8 is tilted backward to discharge the stored grass to the rear.

The parallel link 5 that lifts the collector 8 in this manner is supported at a high position above the support frame 2 at the front of the vehicle body 1, and the rear dump shaft 7 is supported around the lift shaft 3 at the high position. Since the parallel link 5 is raised and lowered, even if the total length of the parallel link 5 is limited by the longitudinal length of the vehicle body 1, the dumping position can be selected by raising it to a high position, and the configuration is simple. Workability can be improved.

[0006]

[Embodiment] In the illustrated example, the vehicle body 1 includes front wheels 9,
and a rear wheel 10, and an engine cover 1 on the upper side.
The rear wheels 1 are driven by an engine mounted in the rear wheel 1, and are driven by an engine mounted in the rear wheel 1 by operating a driver's seat 12 mounted in the front and a steering handle 13 provided further forward.
0 can be steered. The mower 14 is attached to the front of the front wheels 9 of the vehicle body 1, and the temporarily removed grass is transferred to the thrower 17 at the rear of the vehicle body 1 through the blower 15 on one side and the conveying tube 16.
It is configured to be transported to The conveyance cylinder 16 has a bellows-like configuration that can be freely oriented. 18 is a gauge wheel that supports the front part of the mower 14.

A support frame 2 of an appropriate height is provided on the rear side of the driver's seat 12 of the vehicle body 1, and on both left and right sides of this support frame 2, the front end of a parallel link 5 is vertically moved by a lift shaft 3. Support freely. Each of the left and right parallel links 5 is set as long as possible from the lift shaft 3 to the rear of the vehicle body 1 with a pair of upper and lower links parallel to each other, and the rear end of the parallel link 5 is connected to a connecting link 19 that is L-shaped in side view. They are connected by a dump shaft 7, a link shaft 20, etc., and these fixed support frames 2, upper and lower parallel links 5, and a rear connecting link 19 constitute a quadrilateral parallel link mechanism. Further, the dump shaft 7 is integrally constructed with the connecting link 19.

The collector 8 has a bottom portion 21 inclined backwardly and downwardly, and a communication port 23 that communicates with the upper end discharge port 22 of the thrower 17 at the front end. An opening/closing lid 26 is provided which opens and closes by rotating around a shaft 25. The collector 8 is raised and lowered by vertical movement caused by expansion and contraction of the lift cylinder 4 of the parallel link 5, and the lift cylinder 4 is expanded and contracted by control of a lift control valve in a hydraulic circuit. The lift cylinder 4 is connected between the lower part of the support frame 2 and the upper side of the parallel link 5.

The dumping rotation of the collector 8 is achieved by a connecting link 19 at the rear end of the parallel link 5 and a bottom portion of the rear end of the collector 8, which are rotatably supported around the dump shaft 7 and integrated with the dump shaft 7. This is done by a dump cylinder 6 extending and retracting between the collector arm 27 and the bottom part 21 of the bottom part 21 under the control of a dump control valve in a hydraulic circuit. Since the connecting link 19 and the collector arm 27 are integrated via the dump shaft 7, the collector 8 is rotated around the dump shaft 7 by expansion and contraction of the dump cylinder 6. 28 is a stopper that receives the bottom of the collector 8, and the connecting link 19
It is set up in The opening/closing operation of the opening/closing lid 26 is achieved by connecting the arm 29 of the opening/closing shaft 25, which rotates integrally with the opening/closing lid 26, and the connecting link 19 with a rod 30, and by the expansion and contraction of the dump cylinder 6. , when the collector arm 27 that integrates the collector 8 is rotated with respect to the connecting link 9, the opening/closing lid 26 is opened and closed as the collector 8 rotates.
rotates to open and close around the opening and closing shaft 25. Therefore, when the collector 8 is tilted backward, the opening/closing lid 26 is opened, and the grass can be dumped from the discharge port 24 opened by tilting the bottom part 21 backward. During this lift, the communication port 23 of the collector 8 can move up and down within a certain range while the discharge port 22 of the thrower 17 is communicated with the guide tube 35 inside the collector 8, so even if the collector 8 is not at the lowest position. Turfgrass can be contained.

A support base 33 is provided at the rear end of the vehicle body 1 via a parallel link 31 and a ground wheel 32 that can freely move up and down, and can receive a shaft 34 to which the dump cylinder 6 of the connection link 19 is attached. The structure is such that the collector 8 does not move downward below this support base 33. 36 is a hydraulic pipe constituting a hydraulic circuit.

[Brief explanation of the drawing]

The figure shows one embodiment of the invention.

FIG. 1: Overall side view.

FIG. 2 is a side view showing a part of FIG. 1 in an operating state.

FIG. 3 is a side view showing a part of FIG. 1 in an operating state.

FIG. 4 is a partial plan view.

[Fig. 5] Rear view.

FIG. 6 is a perspective view of a collector section that can be partially cut away.

[Explanation of symbols]

1 Vehicle body 2 Support frame 3 Lift axis 4 Lift cylinder 5 Parallel link 6 Dump cylinder 7 Dump shaft 8 Collector

Claims (1)

[Claims] Claim 1: A pair of parallel upper and lower parallel links 5 of appropriate length are provided around a lift shaft 3 on a support frame 2 at the front of the vehicle body 1, and the parallel links 5 have an appropriate length and are raised and lowered by expansion and contraction of a lift cylinder 4. A collector for a tractor mower is provided with a collector 8 at the rear that is rotated around a dump shaft 7 at the rear of the parallel link 5 and dumped by the expansion and contraction of the dump cylinder 6.