JP2007289120A - Connection device for grass-collecting apparatus of riding grass mower - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a riding grass mower enabling easy and efficient connection and disconnection of a grass collection apparatus to the rear part of a self-propelled vehicle. <P>SOLUTION: A lower connection mechanism 50 is extended from the lower end of a grass collection apparatus frame 40 of a grass collection apparatus 20 to the self-propelled vehicle, and an upper connection mechanism 60 is extended from the upper end of the grass collection apparatus frame 40 to the self-propelled vehicle. The lower connection mechanism 50 is provided with an engaging object 51 and an engaging part 53 detachably engaging with the engaging object 51 in a manner freely releasable in the longitudinal direction of the vehicle body. The upper connection mechanism 60 is provided with a connection part 63 to connect or disconnect the vehicle side connection part 61 and the grass collection apparatus-side connection part 62. The grass collection apparatus-side connection part 62 of the upper connection mechanism 60 is made to coincide with the connection object for the connection part 63 of the vehicle-side connection part 61 by tilting the grass-collection apparatus frame 40 in the longitudinal direction of the vehicle around the lower connection mechanism 50. An extension screw shaft 70 is provided in a removable manner. The grass-collection apparatus frame 40 is tilted in the longitudinal direction of the vehicle around the lower connection mechanism 50 by the extension and contraction of the extension screw shaft 70. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a connecting device for a grass collecting device of a riding mower having a grass collecting device connected to a rear portion of a self-propelled vehicle body.

Conventionally, as the above-described riding-type mower, there has been one disclosed in Patent Document 1, for example.
The thing shown by patent document 1 is equipped with the grass collection apparatus which has the grass collection container and the lifting apparatus. The grass collecting device includes a pair of left and right support rods extending from the grass collection container and a plurality of support rods extending from the blower case of the lifting device, and each support rod is connected to the rear portion of the vehicle body frame. 1 It connects with the rear part of a vehicle body by connecting with the outer frame or vertical beam member of an attachment member with a connection bolt.

US 6,454,041 B2

When performing lawn mowing or mowing work, the lawn or grass is cut long, such as when the cut grass or grass is collected while the cut grass or grass is collected in the grass collector, or the lawn or grass is stretched little. It may be performed while releasing cut grass and grass. When the mowing lawn or cut grass is discharged to the work site, if the grass collecting device is removed, the overall length of the mower becomes shorter and the weight becomes lighter, which may make it easier to work on the control surface.
In the case of the connecting device for a grass collecting device obtained from the conventional technical matters, it has been necessary to perform a number of operations for connection and disconnection, such as detaching a large number of connection bolts. In addition, in order to match the bolt holes on the vehicle body side and the grass collecting device side, the alignment operation must be performed while supporting the entire grass collecting device, which takes time and effort for the detachment work.

  An object of the present invention is to provide a connecting device for a grass collecting device of a riding type mower capable of easily and efficiently attaching and removing the grass collecting device.

In the first aspect of the invention, in the connecting device for a grass collector of a riding mower provided with a grass collector connected to the rear portion of the self-propelled vehicle body,
A lower connection mechanism provided across the lower end side of the grass collector frame of the grass collector and the self-propelled vehicle body; and an upper connection mechanism provided across the upper end side of the grass collector frame and the self-propelled vehicle body. ,
The lower connecting mechanism includes an engaged portion provided on one of the self-propelled vehicle body and the grass collector frame, and the self-propelled in a state in which it can be engaged and disengaged with respect to the engaged portion in the longitudinal direction of the vehicle body. An engagement portion provided on the other of the vehicle body and the grass collector frame;
A connection state in which a vehicle body side connection portion provided on the self-propelled vehicle body and a grass collection device side connection portion provided on the grass collector frame are connected to the upper connection mechanism, and the vehicle body side connection portion and the grass collection device. It is equipped with a connection part that can be switched to a connection release state in which the side connection part is separated,
By swinging the upper connecting mechanism in the longitudinal direction of the vehicle body with the grass collector frame as a fulcrum, the grass collecting device side connecting portion and the connecting portion of the vehicle body side connecting portion are connected to each other. Configured so that the connected parts for the match appear.
A telescopic screw shaft that can be connected across the self-propelled vehicle body and the grass collector frame is detachably provided so as to swing the grass collector frame in the longitudinal direction of the vehicle body with the lower connection mechanism as a fulcrum.

  According to the configuration of the first aspect of the present invention, the self-propelled vehicle body and the grass collector frame are connected or disconnected simply by performing a connection operation or a connection release operation on the lower connection mechanism, the upper connection mechanism, and the telescopic screw shaft. The grass collector can be removed. Moreover, when connecting and releasing the connection in the lower connection mechanism, the engaging portion and the engaged portion are engaged and disengaged simply by moving the self-propelled vehicle body and the grass collector frame in the vehicle longitudinal direction. In releasing the connection in the lower connection mechanism, the upper connection mechanism is set in the connection release state, and the grass collecting apparatus side connection part is separated from the vehicle body side connection part to the rear side, whereby the engaging part and the engaged part are separated. Easier to leave. Further, when connecting and separating the grass collecting device side connecting portion and the vehicle body side connecting portion in the upper connecting mechanism, the lower connecting mechanism is kept in a connected state, and the shortening operation is performed by shortening or extending the telescopic screw shaft. The operating force exerted by the telescopic screw shaft causes the grass collector frame to swing forward of the vehicle body with the lower connection mechanism as a fulcrum, so that the connected portions of the grass collector device side connection portion and the vehicle body side connection portion are matched. be able to. In addition, due to the operating force exerted by the telescopic screw shaft that extends, the grass collector frame swings backward from the vehicle body with the lower coupling mechanism as a fulcrum, and the grass collector side coupling portion moves backward from the vehicle body side coupling portion. Can be separated.

  As a result, the grass collector frame can be connected to and disconnected from the self-propelled vehicle body by performing only a few connection and release operations, and the grass collector side connection portion of the upper connection mechanism is separated from the vehicle body side connection portion. The engaging portion and the engaged portion of the lower connection mechanism can be easily engaged / disengaged by allowing the upper connection mechanism to be easily operated simply by operating the telescopic screw mechanism. The grass collecting device side connecting portion can be separated from the vehicle body side connecting portion, and the connected portion between the grass collecting device side connecting portion and the vehicle body side connecting portion can be matched, and the grass collecting device can be easily and efficiently operated. It can be easily and quickly switched between the state where the self-propelled vehicle body is detached and the grass is collected by the grass collecting device and the state where there is no grass collecting device and the maneuvering is easy.

  According to the second aspect of the invention, in the configuration of the first aspect of the invention, the grass collecting device is provided with a blower device that feeds the cut grass into the grass collecting container, and is detachably connected to the power take-off shaft of the self-propelled vehicle body. And a power transmission shaft for transmitting power from the power take-out shaft to the blower device.

  According to the configuration of the second aspect of the invention, the telescopic screw shaft is operated, and the operating force exerted by the telescopic screw shaft causes the grass collector frame to be swung to the front side of the vehicle body with the lower connection mechanism as a fulcrum. The transmission shaft moves together with the grass collector frame to the front side of the vehicle body, and the transmission shaft and the power take-off shaft are in a predetermined connected state.

  As a result, if the telescopic screw shaft is operated so as to align the connected portions of the grass collector side connection portion and the vehicle body side connection portion in the upper connection mechanism, the transmission shaft can be connected to the power take-out shaft all at once. Therefore, it is possible to obtain a high-quality mower in which cut grass and cut grass are reliably fed to the grass collecting container by the blower device in an advantageous state in terms of labor for attaching the grass collecting device.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view of the entire riding mower according to the embodiment of the present invention as viewed from the front, and FIG. 2 is a perspective view of the entire riding mower according to the embodiment of the present invention as viewed from the rear. FIG. FIG. 3 is an overall side view of the riding mower according to the embodiment of the present invention, and FIG. 4 is an overall plan view of the riding mower according to the embodiment of the present invention. As shown in these figures, the riding mower according to the present embodiment is driven by a driving force from an engine 3 in which a pair of left and right front wheels 1 and 1 and a pair of left and right rear wheels 2 and 2 are driven. The self-propelled vehicle body that is self-propelled, the mowing device 10 coupled between the front and rear wheels of the body frame 7 of the self-propelled vehicle body, and the rear portion of the self-propelled vehicle body are coupled via the grass collector connection device A. And a grass collecting device 20.

  The self-propelled vehicle body includes a driving unit equipped with the engine 3, a driving unit equipped with a driver seat 4 and a steering wheel 5, a fall protection frame 6 provided near the rear side of the driver seat 4, and the left and right rear And a rear transmission device 8 that supports the wheels 2 and 2 for driving.

  The mowing apparatus 10 includes a cutting blade housing 12 connected to the vehicle body frame 7 via a link mechanism 11, a plurality of blade-shaped rotary cutting blades 13 arranged in the horizontal direction of the vehicle body inside the cutting blade housing 12, The cutting blade drive mechanism 14 provided on the upper surface side of the cutting blade housing 12, the ground gauge wheel 15 provided outside the cutting blade housing 12, and one end side of the cutting blade housing 12 in the lateral direction of the vehicle body. And a transport duct 16 extending rearwardly from the cut grass discharging portion 12a.

  The cutting blade driving mechanism 14 inputs a driving force from the engine 3 through the rear transmission device 8 and a rotary shaft 9 extended from the rear transmission device 8, and the input driving force is transmitted to the transmission belt. (Not shown) is transmitted to a rotation support shaft (not shown) of each rotary cutting blade 13, and each rotary cutting blade 13 is driven to rotate about the axis of the rotary support shaft in the vertical direction of the vehicle body. The extended end of the transport duct 16 is connected to the cut grass suction cylinder 31 of the grass collecting device 20.

  The link mechanism 11 is operated to swing up and down with respect to the vehicle body frame 7 by a hydraulic cylinder (not shown) provided on the self-propelled vehicle body, and the mowing device 10 is lowered while the ground gauge wheel 15 contacts the ground. Ascending / descending operation is performed between the state and the non-working state in which the ground gauge wheel 15 is lifted from the ground.

  The grass collecting device 20 includes a plurality of cloth-made grass collecting containers 21 which are detachably mounted side by side in the vehicle body side at the rear of the grass collecting device frame 40 (hereinafter abbreviated as the grass collecting frame 40). One container cover 22 covering the upper side of the grass collection container 21 and a blower device 30 provided at the front of the grass collection frame 40 are provided.

  The container cover 22 is configured to communicate with an internal space (not shown) provided inside the container cover 22 and the cut grass provided on one end side in the vehicle body lateral direction of the container cover 22. And an introduction tube 23. That is, the container cover 22 scatters the cut grass and the cut turf fed into the cut grass introduction tube 23 in the internal space above the respective grass collection containers 21 and drops the grass collection containers 21 into the openings upward of the vehicle body. .

  The blower device 30 includes a transfer blower 32 having the cut grass suction cylinder 31 to which the transfer duct 16 of the mowing device 10 is connected, and a blower drive case 33 having one end side connected to the blower case of the transfer blower 32. And. The cut grass discharge cylinder 34 of the transport blower 32 is connected to the cut grass introduction cylinder 23 of the container cover 22 by a transport duct 35. The blower drive case 33 inputs the driving force of the engine 3 from a power take-off shaft 8 a (see FIG. 7) provided in the rear transmission device 8 of the self-running vehicle body, and transmits the input driving force to the transport blower 30.

  That is, the link mechanism 11 is operated to the lowering side, and the mowing apparatus 10 is lowered to the lowering work state, and the self-propelled vehicle body is caused to travel in this state. Then, the mowing apparatus 10 trims the turf and the grass with the rotating rotary cutting blades 13, and the cut mowing lawn and the mowing grass are moved inside the mowing housing 12 by the conveying wind generated by the rotation of the rotary mowing blades 13. It is transported in the lateral direction of the self-propelled vehicle body and fed into the transport duct 16 from the cut grass discharging portion 12a. The cut grass and the cut grass that have flowed into the transport duct 16 are sucked into the transport blower 32 of the grass collecting device 20, and a plurality of collectors are collected via the transport duct 35 and the container cover 22 by the transport air generated by the transport blower 32. It is sent to the grass container 21 and collected.

FIG. 5 shows the structure of the blower device 30 in a plan view of the vehicle body, and FIG. 7 shows the structure of the blower device 30 in a side view of the vehicle body. As shown in these drawings, the blower drive case 33 has an input shaft 36 located at the end opposite to the side connected to the transport blower 30 and one end side of the input shaft 36 so as to be integrally rotatable. A transmission mechanism 37 provided in the blower drive case 33 so that the transmission shaft 37 connected and the input shaft 36 are interlocked with the rotating blades (not shown) of the conveying blower 30 using a transmission belt (not shown). (Not shown). The transmission shaft 37 includes a universal joint portion 37 a so that the transmission shaft 37 can be bent.
That is, the blower device 30 is configured such that a cylindrical shaft-shaped front end portion 37b opposite to the side connected to the input shaft 36 of the transmission shaft 37 is detachably fitted to the power take-off shaft 8a, so that the front end The portion 37b and the power take-off shaft 8a are connected to each other by spline engagement so as to be rotatable together. The engine drive force from the power take-off shaft 8a is input to the input shaft 36 by the transmission shaft 37, and the drive force of the input shaft 36 is It is transmitted to the rotating blades (not shown) of the transport blower 30 by the drive case 33, thereby driving the transport blower 30.

  FIG. 5 shows the structure of the grass collection frame 40 provided in the grass collection device 20 in a plan view, and FIG. 6 shows the perspective structure of the grass collection frame 40 with the container support frame 45 removed. FIG. 7 shows the structure of the grass collection frame 40 in a side view. As shown in these drawings, the grass collecting frame 40 includes a main frame 41 having a U-shaped bent circular steel pipe portion 41a as viewed in the vertical direction of the vehicle body, and a vehicle body located at the vehicle body rear end portion of the main frame 41. A vertical frame 42 made of a vertical steel pipe with a lower end connected to both ends of a grooved metal plate portion 41b in a side view, and a metal plate made of a metal plate that connects the upper ends of the pair of left and right vertical frames 42, 42. A connecting frame 43, the container support frame 45 connected to each vertical frame 42 via a connecting plate 44, and a support plate 46 fixed to the upper end portion of each vertical frame 42 from the front of the vehicle body and downward of the vehicle body. And an inclined frame 47 made of a strip metal plate having a forward and downward inclination.

  The bent circular steel pipe portion 41 a of the main frame 41 supports the lower end side of the blower driving case 33 in the blower device 30, and the pair of left and right inclined frames 47 supports the upper end side of the blower driving case 33. The container support frame 45 includes a plurality of front and rear container support arms 45a arranged in the lateral direction of the vehicle body, and one grass collection container 21 enters between the container support arms 45a. The vicinity of the opening is locked to a pair of container support arms 45a sandwiching the grass collection container 21, and each grass collection container 21 is supported while being suspended from the container support arm 45a.

  FIG. 5 is a plan view of the grass collector connection device A in the grass collector connection state, and FIG. 7 is a side view of the grass collector connection device A in the grass collector connection state. FIG. 6 is a perspective view of the connecting device A for the grass collecting device in a state where the grass collecting device is detached. As shown in these drawings, the grass collector connecting apparatus A includes a pair of left and right hook-shaped engaged portions 51, 51 provided at the rear of the vehicle body, and the vehicle body and the grass collection device. A pair of left and right lower connection mechanisms 50, 50 provided over the frame 40 and a pair of left and right cylindrical shaft-type vehicle body side connection parts 61, 61 provided at the rear of the self-propelled vehicle body are provided separately from each other, and A pair of left and right upper coupling mechanisms 60, 60 provided over the grass collection frame 40, and a center portion in the lateral direction of the rear body of the self-propelled vehicle body and a central portion in the lateral direction of the vehicle body of the grass collection frame 40 are coupled. The telescopic screw shaft 70 is provided.

  The engaged portion 51 and the vehicle body side connecting portion 61 provided on the left side of the rear portion of the vehicle body are a hook portion constituting the engaged portion 51 on the lower end side and a cylinder shaft portion constituting the vehicle body side connecting portion 61. One connecting member 71 provided on each of the upper end sides is fixed to the rear portion of the vehicle body frame 7 with a connecting bolt. Similarly to those on the left side, both the engaged portion 51 and the vehicle body side connecting portion 61 provided on the right side of the rear portion of the vehicle body have the hook portion constituting the engaged portion 51 on the lower end side, and the vehicle body side connecting portion 61. One connecting member 71 having a cylindrical shaft portion to be configured on the upper end side is fixed to the rear portion of the vehicle body frame 7 with a connecting bolt.

  Each of the lower connecting mechanisms 50 includes the engaged portion 51 and a vehicle body provided by connecting a round shaft member to a front end portion of the main frame 41 in the grass collecting frame 40 via a connecting member 52. A horizontally oriented engagement portion 53 having a round shaft shape is provided.

  7 and 8 show the connection state of the lower connection mechanism 50, and FIG. 9 shows the connection release state of the lower connection mechanism 50. As shown in these drawings, each lower connection mechanism 50 is configured such that the main frame 41 of the grass collecting frame 40 is operated to approach the connection member 71 from the rear side of the vehicle body, and the engaging portion 53 is connected to the engaged portion 51. The engagement portion 53 and the engaged portion 51 are engaged with each other through the vehicle body rearward-facing opening 51a, and the underside of the grass collecting frame 40 is connected to the rear portion of the vehicle body. Each lower connection mechanism 50 is configured such that the main frame 41 of the grass collection frame 40 is operated to be separated from the connection member 71 toward the vehicle body rear side, and the engaging portion 53 is removed from the engaged portion 51, whereby the grass collecting frame It will be in the connection cancellation | release state which made the lower side of 40 isolate | separate from the vehicle body rear part.

  Each of the upper coupling mechanisms 60 includes the vehicle body side coupling portion 61 and a two-pronged grass collector side coupling portion 62 (hereinafter referred to as grass collection) provided at the front end portion of the inclined frame 47 in the grass collection frame 40. And a connecting pin 63 that is detachable with respect to the grass collecting side connecting portion 62 and the vehicle body side connecting portion 61.

  7 and 10 show the connection state of the upper connection mechanism 60, and FIGS. 8 and 9 show the connection release state of the upper connection mechanism 60. As shown in these drawings, each upper coupling mechanism 60 is swung to the front side of the vehicle body with the engaged portion 51 of each lower coupling mechanism 50 with the grass collection frame 40 in a coupled state as a fulcrum. When the pair of left and right connecting pieces 62a, 62a of the grass side connecting portion 62 is swung until the vehicle body side connecting portion 61 is sandwiched, the pin hole 62b of the grass collecting side connecting portion 62 and the vehicle body side connecting portion 61 are operated. The pin hole 61a is in a matched state. The connection pin 63 of each upper connection mechanism 60 is mounted across the pair of left and right connection pieces 62a, 62a of the grass collection side connection portion 62 and the vehicle body side connection portion 61, whereby the grass collection side connection portion 62 and the vehicle body side are connected. The connecting portion 61 is connected to the connecting portion 61, and is removed from the pair of left and right connecting pieces 62 a and 62 a of the grass collecting side connecting portion 62 and the vehicle body side connecting portion 61. And the vehicle body side connecting portion 61 are disconnected. As shown by a solid line in FIG. 11, when the connecting pin 63 is attached to the grass collecting side connecting portion 62 and the vehicle body side connecting portion 61, one end of the locking rod 64 provided slidably on the connecting pin 63 is collected. It is inserted into the locking hole 65 a of the lock piece 65 provided in the grass side connecting part 62. Then, the locking rod 65 maintains the state of being attached to the lock piece 65 by the downward urging due to the weight of the locking rod 65, and prevents the connecting pin 63 from coming off. When the grass collecting frame 40 is swung to the rear side of the vehicle body with the engaged portion 51 of each lower side coupling mechanism 50 in the connected state as a fulcrum, the grass collection side coupling portion 62 of each upper side coupling mechanism 60 is moved to the vehicle body. The vehicle is separated from the side connecting portion 61 toward the vehicle body rear side.

    As shown in FIGS. 7 and 10, the front end side of the telescopic screw shaft 70 is connected to a vehicle body side bracket 72 included in a support frame 76 fixed to the rear portion of the vehicle body frame 7. The rear end side of the telescopic screw shaft 70 is connected to a grass collecting side bracket 73 fixed to the connecting frame 43 in the grass collecting frame 40. The telescopic screw shaft 70 includes a male screw shaft 70a having one end connected to the vehicle body side bracket 72, a male screw shaft 70b having one end connected to the grass collecting side bracket 73, and the other end sides of the male screw shafts 70 and 70b. And a female threaded cylinder shaft 70c. Accordingly, the telescopic screw shaft 70 is shortened by rotating the female screw shaft 70c in one rotational direction with respect to both male screw shafts 70a and 70b, and the female screw shaft 70c is changed to both male screw shafts 70a and 70b. On the other hand, the extension operation is performed by rotating in the other rotation direction. As shown in FIG. 8, when the telescopic screw shaft 70 is extended, an operation force for swinging the grass collecting frame 40 to the rear side of the vehicle body with the engaged portion 51 of the left and right lower connection mechanism 50 as a fulcrum is provided. When exerted and shortened, an operation force is exerted to swing the grass collecting frame 40 forward of the vehicle body with the engaged portion 51 of the left and right lower coupling mechanism 50 as a fulcrum. As shown in FIGS. 7 to 10, the telescopic screw shaft 70 is attached to the grass collecting frame 40 by detaching a connecting pin 74 that connects the rear end side of the telescopic screw shaft 70 and the grass collecting bracket 73. On the other hand, it is desorbed.

That is, the grass collecting device 20 can be detached by the following desorption procedure.
That is, when the grass collecting device 20 is removed, the connecting pins 63 of the left and right upper connecting mechanisms 60, 60 are removed, and the grass collecting side connecting portion 62 and the vehicle body side connecting portion 61 of the left and right upper connecting mechanisms 60, 60 are connected. To release. Next, the telescopic screw shaft 70 is extended. Then, the operating force exerted by the telescopic screw shaft 70 is swung to the rear side of the vehicle body with the engaged portions 51 of the left and right lower connection mechanisms 50, 50 in the connected state of the grass collecting frame 40 as fulcrums, The grass collecting side connecting portions 62 of the left and right upper connecting mechanisms 60, 60 are separated rearward from the vehicle body side connecting portion 61. As a result, the upper side of the grass collection frame 40 is detached from the self-propelled vehicle body. Next, the main frame 41 on the lower side of the grass collection frame 40 is operated to separate backward from the connection member 71 of the self-propelled vehicle body. Then, the engaging portions 53 of the left and right lower coupling mechanisms 50, 50 are detached from the engaged portions 51, and the lower side of the grass collecting frame 40 is detached from the self-propelled vehicle body. At this time, the connecting pin 74 of the telescopic screw shaft 70 is removed, and the connection with the self-propelled vehicle body by the telescopic screw shaft 70 of the grass collecting frame 40 is released. Further, when the telescopic screw shaft 70 is extended and when the lower connection mechanism 50 is disconnected, the transmission shaft 37 moves to the rear side of the vehicle body by the blower drive case 33 that moves together with the grass collecting frame 40. When operated, the front end portion 37b of the transmission shaft 37 moves toward the tip side of the power take-out shaft 8a.

  In attaching the weeding device 20, the lower main frame 41 of the weeding frame 40 is operated to approach the connecting member 71 of the self-propelled vehicle body, and the engaging portions 53 of the left and right lower connecting mechanisms 50, 50 are engaged. Engage with the part 51. Then, the left and right lower connection mechanisms 50 and 50 are connected, and the lower side of the grass collecting frame 40 is connected to the self-propelled vehicle body. Next, the rear end side of the telescopic screw shaft 70 is connected to the grass collecting side bracket 73, and the telescopic screw shaft 70 is shortened. Then, by the operating force exerted by the telescopic screw shaft 70, the grass collecting frame 40 is swung to the front side of the vehicle body with the engaged portions 51 of the left and right lower connection mechanisms 50, 50 as fulcrums, and the left and right upper connection The grass collecting side connecting portion 62 in the mechanisms 60, 60 is moved to the vehicle body side connecting portion 61. As a result, a state in which the pin holes 62b and 61a of the grass collecting side connecting portion 62 and the vehicle body side connecting portion 61 in the left and right upper connecting mechanisms 60 and 60 are brought into correspondence with each other appears. Then, the connecting pins 63 are attached to the left and right upper connecting mechanisms 60, 60. Then, the left and right upper coupling mechanisms 60, 60 are in a coupled state, and the upper side of the grass collection frame 40 is coupled to the self-propelled vehicle body. As described above, when the telescopic screw shaft 70 is shortened, the front end portion 37b of the transmission shaft 37 is externally fitted to the distal end portion of the power take-out shaft 8a. Then, as the grass collecting frame 40 is swung to the front side of the vehicle body, the transmission shaft 37 is fitted into the power take-off shaft 8a by the blower drive case 33 that swings together with the grass collecting frame 40, and the grass collecting frame 40 is moved. If it becomes a predetermined | prescribed connection attitude | position, the transmission shaft 37 will be in the normal transmission connection state in which the front-end part 37b of this was externally fitted in the predetermined position of the power extraction shaft 8a.

As shown in FIG. 10, when the grass collection device 20 is connected, the connection pins in the upper connection mechanism 60 and the lower connection mechanism 50 located on the opposite side of the grass collection frame 40 from the side from which the blower device 30 protrudes. A connection reinforcing rod 75 is attached across 63 and the engaging portion 53. That is, since the blower device 30 is unevenly distributed to one side of the vehicle body with respect to the grass collection frame 40, the distance between the one engaging portion 53 and the grass collection side connecting portion 62 is increased by the weight of the blower device 30. An operating force is generated. However, the connection reinforcement rod 75 improves the connection strength between the engaging portion 53 and the grass-collecting side connection portion 62 so as to prevent the interval change.
When the grass collecting device 20 is attached and detached in this manner, the connection between the transport duct 16 of the mowing device 10 and the mowing grass suction cylinder 31 of the blower device 30 is released.

[Another Example]
Instead of providing the engaging portion 53 of the lower coupling mechanism 50 on the grass collecting frame 40 and providing the engaged portion 51 on the self-propelled vehicle body as in the above embodiment, the engaging portion 53 is provided on the self-propelled vehicle body. You may employ | adopt the structure which provides the joint part 51 in the grass collection frame 40. FIG. That is, the object of the present invention can be achieved by providing the engaging portion 53 on one of the self-propelled vehicle body and the grass collecting frame 40 and the engaged portion 51 on the other.

  The object of the present invention can be achieved even when various connecting tools such as connecting bolts are used instead of the connecting pin 63 of the upper connecting mechanism 60 as in the above embodiment. Accordingly, the connecting pin 63, the connecting bolt, and the like are collectively referred to as a connecting portion 63, and the pin holes 61a and 62b of the vehicle body side connecting portion 61 and the grass collector side connecting portion 62 are referred to as connected portions 61a and 62b. .

Perspective view from the front of the entire riding mower Perspective view from the rear of the entire riding mower Side view of the entire riding mower Top view of the entire riding mower Plan view of the whole grass collector frame in the connected state The perspective view in the state which the container support frame of the grass collector frame is removed, and the coupling device for the grass collector is released. Side view of the connecting device for the grass collector with the grass collector connected Side view with the upper coupling mechanism of the coupling device for the grass collecting apparatus released. Side view of the connecting device for the grass collector with the grass collector removed Top view of the connecting device for the grass collector Side view of the upper connection mechanism in the connected state

Explanation of symbols

8a Power take-off shaft 20 Grass collecting device 21 Grass collecting container 30 Blower device 37 Transmission shaft 40 Grass collecting device frame 50 Lower connection mechanism 51 Engagement portion 53 Engagement portion 60 Upper connection mechanism 61 Vehicle body side connection portion 62 Grass collection device Side connection part 63 Connection part 70 Telescopic screw shaft

Claims (2)

It is a connecting device for a grass collector of a riding type mower equipped with a grass collector connected to the rear part of the self-propelled vehicle body,
A lower connection mechanism provided across the lower end side of the grass collector frame of the grass collector and the self-propelled vehicle body; and an upper connection mechanism provided across the upper end side of the grass collector frame and the self-propelled vehicle body. ,
The lower connecting mechanism includes an engaged portion provided on one of the self-propelled vehicle body and the grass collector frame, and the self-propelled in a state in which it can be engaged and disengaged with respect to the engaged portion in the longitudinal direction of the vehicle body. An engagement portion provided on the other of the vehicle body and the grass collector frame;
A connection state in which a vehicle body side connection portion provided on the self-propelled vehicle body and a grass collection device side connection portion provided on the grass collector frame are connected to the upper connection mechanism, and the vehicle body side connection portion and the grass collection device. It is equipped with a connection part that can be switched to a connection release state in which the side connection part is separated,
By swinging the upper connecting mechanism in the longitudinal direction of the vehicle body with the grass collector frame as a fulcrum, the grass collecting device side connecting portion and the connecting portion of the vehicle body side connecting portion are connected to each other. Configured so that the connected parts for the match appear.
Riding equipped with a telescopic screw shaft that can be connected to the self-propelled vehicle body and the grass collector frame so as to swing the grass collector frame in the longitudinal direction of the vehicle body with the lower connection mechanism as a fulcrum. Connecting device for grass collecting device of type mower. The grass collecting device is provided with a blower device for feeding cut grass into a grass collecting container,
The connecting device for a grass collector of a riding type mower according to claim 1, further comprising a transmission shaft that is detachably connected to a power take-off shaft of the self-propelled vehicle body and transmits power from the power take-out shaft to the blower device.

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