JP2012223153A - Coupling device of mower collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that attaching/detaching operation is complicated, cumbersome, and requires a long time because a plurality of pins, hooks are fitted or engaged while supporting a heavy collector, the connecting of a dump cylinder for dumping and operating the collector and the connecting of hydraulic hoses of the dump cylinder are carried out when attaching and detaching the mower collector to a rear part of a vehicle body.SOLUTION: A hitch bracket 7 and the dump cylinder 8 are arranged in the rear part of the vehicle body 2, pin holes 12, 13 through which the connecting pin 11 can be passed from a lateral side are formed in a bracket arm 9 above the hitch bracket 7 and in a hitch arm 10 above the opening part 6 of the collector 5, the connecting 11 is passed through a pin hole 15 of a piston 14 of the dump cylinder 8 and is formed in a bifurcated shape by being integrated with a dump pin 18 capable of being passed through a dump pin hole 16 of the hitch arm 10.

Description

  The present invention relates to a connecting device for a mower collector that connects a mower collector to a rear portion of a vehicle body in a dumpable manner.

  A technique for connecting a mower collector to a rear portion of a vehicle body in a dumpable manner (see, for example, Patent Document 1) is known.

Japanese Patent Laying-Open No. 2009-273406 (FIG. 7).

  When a mower collector is attached to or detached from the rear of the vehicle body, a plurality of pins, hooks, etc. are fitted or engaged while supporting a heavy collector, and a dump cylinder is connected to dump the collector, and this dump Since the cylinder's hydraulic hose and the like are connected, the attaching / detaching operation is complicated, cumbersome and requires a long time.

  According to the first aspect of the present invention, the duct port 4 of the weeding duct 3 that conveys and guides the cutting turf grass discharged from the mower deck 1 is positioned at the rear end portion of the vehicle body 2 that is mowing and running with the mower deck 1 mounted. A hitch bracket 7 is provided on the rear side of the duct port 4 so that the front opening 6 of the collector 5 can be communicated, and a dump cylinder 8 for dumping the collector 5 connected to the hitch bracket 7 is provided. Pin holes 12 and 13 through which connecting pins 11 can be inserted from the side are formed in the bracket arm 9 at the top of the hitch bracket 7 and the hitch arm 10 at the top of the opening 6 of the collector 5. Can be inserted into the pin hole 15 of the piston 14 of the dump cylinder 8 and can be inserted into the dump pin hole 16 of the hitch worm 10, or the hitch arm 1. To the possible dumping engage the lower edge 17, the configuration of the coupling device mower collector, characterized in that configured in bifurcated form a Danpupin 18 integrally.

  To attach / detach the collector 5 to / from the rear part of the vehicle body 2, an operator inserts and removes the connecting pin 11 and the dump pin 18. When the collector 5 is connected, the front opening 6 of the collector 5 is brought close to the duct opening 4 on the hitch bracket 7 side, and the bracket arm 9 above the hitch bracket 7 and the upper part of the dump cylinder 8 are connected. The pin holes 12 and 13 of the hitch arm 10 of the rear collector 5 are overlapped at the insertion position of the connecting pin 11 and the dump pin 18 inserted between the pin holes 12 and 15 formed in the piston 14. Then, the connecting pins 11 are inserted into these pin holes 12, and at the same time, the dump pins 18 are inserted into the pin holes 13, and are connected by simultaneous insertion of these pins 11, 18. When the collector 5 is dumped, the piston 14 of the dump cylinder 8 is extended so that the dump pin 18 is rotated rearward and upward around the connecting pin 11, and the dump pin hole 16 part with respect to the dump pin 18. Or the hitch arm 10 engaged with the lower edge portion 17 is pushed up, so that the collector 5 is dumped upward around the connecting pin 11, and the opening 6 is moved to the hitch bracket 7. The turf grass accommodated in the collector 5 can be discharged from the opening 6 as a dumping posture by opening upward from the duct port 4 to the rear. When removing such a connected collector 5, the connecting pin 11 is pulled out to the side, whereby the dump pin 18 integrated therewith is also pulled out at the same time, and the hitch arm 10 on the collector 5 side is pulled out. The collector 5 can be removed by releasing the pin hole 13 and the dump pin hole 16 or the lower edge portion 17 to release the connection of the respective connection pins and the hitch arm 10 from which the dump pin 18 has been removed.

  Moreover, although it can be set as the form which remains in the pin hole 12 of these bracket arms 9, and the pin hole 15 of piston 14 in the state which the connection pin 11 and the dump pin 18 fitted, in this form, the connection pin 11 Alternatively, the dump pin 18, the dump cylinder 8 and the like are left attached to the bracket arm 9 on the vehicle body 2 side, so that the collector 5 can be easily attached and detached, transported and handled.

According to a second aspect of the present invention, the bifurcated connecting pin 11 and the dump pin 18 form a U-shaped handle 19 capable of gripping the connecting base of each of the pins 11 and 18.
When the hitch arm 10 of the collector 5 is connected to the hitch bracket 7 at the rear of the vehicle body 2 as described above, the upper connecting pin 11 is inserted through the pin hole 12 of the bracket arm 9 and the pin hole 13 of the hitch arm 10. At the same time, the lower dump pin 18 is inserted into the pin hole 15 of the piston 14 and the dump pin hole 16 of the hitch arm 10, and a loop configuration is used to connect the connection pin 11 and the dump pin 18. By grasping the handle 19 and pushing and pulling it from the side, the upper and lower pins 11 and 18 can be operated in a balanced manner and can be inserted into and removed from the pin holes.

  According to a third aspect of the present invention, the support table 20 on which the collector 5 is mounted and supported is provided with a collector mount 22 that swings in a seesaw shape around a support shaft 21 in the horizontal direction. The connecting pin 11 and the dump pin 18 are inserted and connected while the collector 5 received on 22 is swung up and down.

  When the collector 5 is attached or detached, it is necessary to align the pin hole 13 of the hitch arm 10 of the collector 5 with the position just beside the pin hole 12 of the bracket arm 9. 22 can swing in the form of a seesaw around the support shaft 21, so that the hitch arm 10 portion of the collector 5 is moved up and down while the pin hole 13 of the hitch arm 10 is aligned with the opposing position of the connecting pin 11, The connecting pin 11 can be inserted. Further, when the connecting pin 11 is inserted into the pin hole 13, the dump pin 18 inserted into the pin hole 15 of the piston 14 is simultaneously fitted to the dump pin hole 16 or the lower edge portion 17 of the hitch arm 10 while rotating up and down. In other words, the collector 5 is brought into a state where it can be dumped.

  According to the first aspect of the present invention, the connecting pin 11 and the dump pin 18 having a bifurcated integral structure are inserted and removed, and the hitch arm 10 is attached to and detached from the bracket arm 9 and the hitch arm 10 is attached to the piston 14 of the dump cylinder 8. Since the attachment / detachment operation of the collector 5 is performed at the same time, the attachment / detachment configuration of the collector 5 and the attachment / detachment operation can be simplified and performed easily and quickly.

  According to the second aspect of the present invention, since the loop-shaped handle 19 is formed at the connection base portion of the connection pin 11 and the dump pin 18, the pin operation for gripping and pushing the handle 19 can be easily performed with one hand. The other hand can position the hitch arm 10 of the collector 5 and the pin connection operation can be performed quickly and accurately. Further, the configuration of the connecting pin 11 and the dump pin 18 can be simply and easily configured.

  According to a third aspect of the present invention, the collector 5 for attaching to and detaching from the bracket arm 9 of the hitch bracket 7 is mounted on a collector mounting table 22 that swings and swings around the support shaft 21 in a seesaw shape, so that the seesaw swings. Since the pin holes 13 of the connecting pin 11 and the like are aligned with each other, the seesaw rocking of the collector 5 and the collector mounting base 22 is easily and easily performed by the weight balance in the front-rear direction. 11, the operation of aligning the hitch arm 10 with respect to 11 can be performed quickly and accurately. Moreover, since the support structure of the collector stage 22 is a seesaw-like rocking configuration around the support shaft 21, it can be easily made inexpensive.

The whole side view of a more collector. The enlarged side view of the collector attaching part. The side view when the collector is removed. The rear view of the connection pin part. FIG. The rear view which shows the operation state (A) of the Example according to a part, (B).

  Based on the drawings, the mower deck 1 is mounted on the abdomen of the vehicle body 2 of the garden tractor, and the collector 5 is detachably mounted on the rear portion of the vehicle body 2 via the hitch bracket 7. The collector 5 is accommodated through the weeding duct 3 of the left and right rear wheels 23. The vehicle body 2 has a driver's seat 25 between the left and right fenders 24 on the rear wheel 23, a steering handle 28 is disposed on a front steering post 27 via a floor 26, and an engine 30 is disposed under the front bonnet 29. It is mounted, and the rear wheel 23, the blade 31 of the mower deck 1 and the like are transmitted and rotated from the engine 30 to perform the grass cutting operation while traveling. The steering is performed by steering the front wheel 32 with the handle 28. The weeding duct 3 is formed from the rear discharge port 33 of the mower deck 1 to the rear end of the vehicle body 2 between the rear wheel 23 tread below the driver's seat 25, and an opening 6 is formed at the rear end. Then, the turf grass cut by the rotation of the blade 31 is discharged rearward from the opening 6 while being transported to the rear upper part.

  The hitch bracket 7 formed at the rear portion of the vehicle body 2 is configured to surround the opening 6, and bracket arms 9 are provided on both left and right sides of the upper end portion, and the collector 5 is interposed between the bracket arms 9. The hitch arm 10 is positioned and connected by the connecting pin 11. The front end opening 6 of the collector 5 connected to the rear side surface of the hitch bracket 7 is communicated with the duct port 4, and a partition plate is provided on the outer periphery of the duct port 4, or the opening 6 A net for preventing leakage of the accommodated turfgrass is formed on the outer peripheral portion of the turf so that the turfgrass discharged from the duct port 4 is accurately collected by the collector 5 and is not leaked. Further, the collector 5 is constructed by stretching a ventilation net around the outer periphery of a box-shaped collector frame 34, and a cover 36 in which an air exhaust chamber 35 is formed on a ceiling portion. The hitch arm 10 is attached to the bracket arm 9 so as to protrude above the front end of the collector frame 34 on the upper side of the fixed attachment plate 44.

  The hitch bracket 7 has a bracket hitch 37 on the front side, and is detachably attached to a rear hitch 38 at the rear portion of the vehicle body 2 by a hitch pin 39. The dump cylinder 8 is attached to the center portion of the bracket hitch 37 so as to be rotatable up and down with a set pin 40. A hydraulic transmission case 42 is provided in the traveling transmission case 41 at the rear of the vehicle body 2, and a hydraulic hose 43 extending from the hydraulic case 42 to the dump cylinder 8 is provided, and a control valve of the hydraulic case 42 is operated. By operating the dump cylinder 8, the collector 5 can be dumped.

  Here, the connecting device of the mower collector is provided with a duct port 4 of a weeding duct 3 that conveys and guides the cutting turf grass discharged from the mower deck 1 at the rear end portion of the vehicle body 2 that is mowing and running with the mower deck 1 mounted. A hitch bracket 7 is provided on the rear side of the duct port 4 so that the front opening 6 of the collector 5 can communicate with the dump port 4, and a dump cylinder 8 for dumping the collector 5 connected to the hitch bracket 7. Pin holes 12 and 13 through which the connecting pins 11 can be inserted from the side are formed in the bracket arm 9 at the upper part of the hitch bracket 7 and the hitch arm 10 at the upper part of the opening 6 of the collector 5. The pin 11 can be inserted into the pin hole 15 of the piston 14 of the dump cylinder 8 and can be inserted into the dump pin hole 16 of the hitch worm 10, or Possible dumping engage the lower edge 17 of the hitch arm 10, constituting the forked form a Danpupin 18 integrally.

  To attach / detach the collector 5 to / from the rear part of the vehicle body 2, an operator inserts and removes the connecting pin 11 and the dump pin 18. When the collector 5 is connected, the front opening 6 of the collector 5 is brought close to the duct opening 4 on the hitch bracket 7 side, and the bracket arm 9 above the hitch bracket 7 and the upper part of the dump cylinder 8 are connected. The pin holes 12 and 13 of the hitch arm 10 of the rear collector 5 are overlapped at the insertion position of the connecting pin 11 and the dump pin 18 inserted between the pin holes 12 and 15 formed in the piston 14. Then, the connecting pins 11 are inserted into these pin holes 12, and at the same time, the dump pins 18 are inserted into the pin holes 13, and are connected by simultaneous insertion of these pins 11, 18. When the collector 5 is dumped, the piston 14 of the dump cylinder 8 is extended so that the dump pin 18 is rotated rearward and upward around the connecting pin 11, and the dump pin hole 16 part with respect to the dump pin 18. Or the hitch arm 10 engaged with the lower edge portion 17 is pushed up, so that the collector 5 is dumped upward around the connecting pin 11, and the opening 6 is moved to the hitch bracket 7. The turf grass accommodated in the collector 5 can be discharged from the opening 6 as a dumping posture by opening upward from the duct port 4 to the rear. When removing such a connected collector 5, the connecting pin 11 is pulled out to the side, whereby the dump pin 18 integrated therewith is also pulled out at the same time, and the hitch arm 10 on the collector 5 side is pulled out. The collector 5 can be removed by releasing the pin hole 13 and the dump pin hole 16 or the lower edge portion 17 to release the connection of the respective connection pins and the hitch arm 10 from which the dump pin 18 has been removed.

  Moreover, although it can be set as the form which remains in the pin hole 12 of these bracket arms 9, and the pin hole 15 of piston 14 in the state which the connection pin 11 and the dump pin 18 fitted, in this form, the connection pin 11 Alternatively, the dump pin 18, the dump cylinder 8 and the like are left attached to the bracket arm 9 on the vehicle body 2 side, so that the collector 5 can be easily attached and detached, transported and handled.

The bifurcated connecting pin 11 and the dump pin 18 form a U-shaped handle 19 capable of gripping the connecting base portion of the pins 11 and 18.
When the hitch arm 10 of the collector 5 is connected to the hitch bracket 7 at the rear of the vehicle body 2 as described above, the upper connecting pin 11 is inserted through the pin hole 12 of the bracket arm 9 and the pin hole 13 of the hitch arm 10. At the same time, the lower dump pin 18 is inserted into the pin hole 15 of the piston 14 and the dump pin hole 16 of the hitch arm 10, and a loop configuration is used to connect the connection pin 11 and the dump pin 18. By grasping the handle 19 and pushing and pulling it from the side, the upper and lower pins 11 and 18 can be operated in a balanced manner and can be inserted into and removed from the pin holes.

  Further, the support table 20 for mounting and supporting the collector 5 is provided with a collector mount 22 that swings in a seesaw shape around a support shaft 21 in the horizontal direction, and the collector 5 received on the collector mount 22. The connecting pin 11 and the dump pin 18 are inserted and connected while swinging up and down.

  When the collector 5 is attached or detached, it is necessary to align the pin hole 13 of the hitch arm 10 of the collector 5 with the position just beside the pin hole 12 of the bracket arm 9. 22 can swing in the form of a seesaw around the support shaft 21, so that the hitch arm 10 portion of the collector 5 is moved up and down while the pin hole 13 of the hitch arm 10 is aligned with the opposing position of the connecting pin 11, The connecting pin 11 can be inserted. Further, when the connecting pin 11 is inserted into the pin hole 13, the dump pin 18 inserted into the pin hole 15 of the piston 14 is simultaneously fitted to the dump pin hole 16 or the lower edge portion 17 of the hitch arm 10 while rotating up and down. In other words, the collector 5 is brought into a state where it can be dumped. The bracket arm 9 is erected from both left and right end portions of the hitch bracket 7 and has a lateral pin hole 12 into which the connecting pin 11 is inserted and removed at the upper end portion. The hitch arm 10 on the collector 5 side is made of a plate material disposed on both the left and right sides. The upper end of the hitch arm 10 is integrally formed through a horizontal pipe collar 45, and the inside of the pipe collar 45 is connected to the connecting pin 11. Is formed as a pin hole 13 of the hitch arm 10 through which is inserted. For this reason, even if the mounting plate 44 on which the hitch arm 10 is fixedly arranged is easily distorted, the hitch arm 10 is formed in a gate shape by the connection of the pipe collar 45, so that it is a lightweight collector but a stable collector. The arm 34 and the hitch arm 10 can be used. A dump pin hole 16 for connecting the piston 14 is formed in the center of the hitch arm 10 in the width direction.

  The connecting pin 11 and the dump pin 18 are configured in parallel in a two-stage form with an appropriate interval in the vertical direction, and one side end is connected to a loop-shaped handle 19 so as to be integrated in a U-shaped form. It is said. The connecting pin 11 is formed so as to extend between the left and right bracket arms 9, and the lower dump pin 18 is long enough to fit in the pin hole 15 of the central piston 14 and the dump pin holes 16 on both sides. Then, a pin hole 46 into which the hairpin 45 is inserted is formed at the tip of the dump pin 18 so that it can be prevented from coming off.

  The connecting pin 11 and the dump pin 18 can be removed from the pin holes 12, 13, 15 of the bracket arm 9, the hitch arm 10, and the piston 14, the dump pin hole 16, and the like laterally outward.

  Instead of such a configuration, as shown in FIG. 6, the relative positions of the bracket arm 9, the dump arm 10, the piston 4 and the like are set to be slightly changed, and the length of the connecting pin 11, the dump pin 18 and the like is increased. By changing and setting (A), even if the connecting pin 11 and the tip of the dump pin 18 are removed from the pin hole 13 and the dump pin hole 16 of the hitch arm 10 (B), the pin hole of the bracket arm 9 12 and the pin hole 15 of the piston 14 are set so as not to be partially removed, and the dump cylinder 8 is normally connected to the bracket arm 9 via the connecting pin and the dump pin 18. The hitch arm 10 can be attached and detached more easily and easily.

  The hitch arm 10 is formed with a dump pin hole 16 into which the dump pin 18 is fitted. Instead of this form, the dump pin 18 is simply placed under the hitch arm 10 to rotate the collector 5 upward. The dumping can be rotated by engaging with the edge 17 and pushing it up. In this embodiment, the dump pin 16 is not required and the pin hole alignment of the dump pin 18 is unnecessary, and both the configuration and the engaging action are simple and easy. The downward movement return of the collector 5 is performed by reducing the piston 14 and automatically lowering the collector 5.

  The bottom of the collector 5 is supported so as to swing back and forth in a certain angle range. The collector mount 22 is formed on a front lower inclined surface and is provided with a stopper 47 at the front end. The stower 47 is moved back and forth to adjust the support position of the collector back and forth, or a spring is provided between the support 20 and the collector mount 22 so that the collector mount 22 can be moved forward or downward. It is also possible to facilitate adjustment of the mounting posture of the collector 5 by energizing.

DESCRIPTION OF SYMBOLS 1 More deck 2 Car body 3 Weeding duct 4 Duct port 5 Collector 6 Opening part 7 Hitch bracket 8 Dump cylinder 9 Bracket arm 10 Hitch arm 11 Connecting pin 12 Pin hole 13 Pin hole 14 Piston 15 Pin hole 16 Dump pin hole 17 Lower edge 18 Dump pin 19 Handle 20 Support base 21 Support shaft 22 Collector mounting base

Claims (3)

  A duct port (4) of a weeding duct (3) for conveying and guiding the cutting turfgrass discharged from the mower deck (1) is located at the rear end of the vehicle body (2) mounted with the mower deck (1) for cutting. The hitch bracket (7) that allows the front opening (6) of the collector (5) to communicate with the rear side of the duct port (4) is provided, and the collector connected to the hitch bracket (7) is provided. A dump cylinder (8) for dumping (5), a bracket arm (9) at the top of the hitch bracket (7), a hitch arm (10) at the top of the opening (6) of the collector (5), Are formed with pin holes (12) and (13) through which the connecting pin (11) can be inserted from the side, and the connecting pin (11) is connected to the pin hole (15) of the piston (14) of the dump cylinder (8). ) To insert the hit The dump pin (18) can be inserted into the dump pin hole (16) of the arm (10), or can be engaged with the lower edge (17) of the hitch arm (10), and the dump pin (18) is integrally formed in a bifurcated shape. A coupling device for a mower collector, characterized in that:   The bifurcated connecting pin (11) and the dump pin (18) form a U-shaped handle (19) capable of gripping the connecting base of each pin (11) (18). Item 2. A connecting device for a mower collector according to item 1.   A support platform (20) for mounting and supporting the collector (5) is provided with a collector platform (22) that swings in a seesaw shape around a lateral support shaft (21). 22) The mower collector according to claim 1 or 2, wherein the connecting pin (11) and the dump pin (18) are inserted and connected while swinging up and down the collector (5) received on the upper side. Connecting device.

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