JP2010148403A - Grass collector of mower - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grass collector of mower for easily attaching and detaching a grass collecting container. <P>SOLUTION: The grass collecting container is supported rotatably around a traversal axis in the right and left directions of the upper part of the grass collecting container 7 and is changeable from a separation position in which the grass collecting container 7 is opened downward to the attachment position in which the front part of the grass collecting container 7 is connected a support frame 28. The grass collector is equipped with a locking mechanism 61 that is automatically connected to a hook 63 urged in a connection direction by an urging means 67 and fixes the grass collecting container 7 on the attachment position when the grass collecting container 7 is changed in position to the attachment position between the support frame 28 and the front end lower part of the grass collecting container 7 and with a change means 69 for changing the initial energizing force of the urging means 67 stronger or weaker. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a grass collecting apparatus for a grass mower in which a grass collecting container that collects grass cut by a grass cutting apparatus mounted on a traveling machine body is configured to be detachable from the traveling machine body.

  As a grass harvesting container for a mower, the traveling machine is equipped with a mowing device, a duct is extended from the mowing device toward the rear of the traveling machine, and the grass collecting container is detachably attached to a support frame provided at the rear of the traveling machine. In addition, there is known a structure in which an opening formed in the front portion of the grass collection container and a duct are connected to each other, and the cut grass cut by the mowing device is collected in the grass collection container through the duct (for example, a patent) Reference 1).

When mounting the grass collection container shown in Patent Document 1, the upper part of the grass collection container is attached to the support frame at the rear of the traveling machine body so as to be rotatable about the horizontal axis in the left-right direction, and then the lower part of the grass collection container. As a means for locking, the lock member 25 engaged with the lock fitting 26 of the grass collection container is lifted and opened by pulling up the operation rod 29, and after the lock fitting of the grass collection container is positioned at a predetermined position, the operation rod By operating 29, the lock member 25 is engaged with the lock fitting 26 to lock the lower portion of the grass collection container, and the grass collection container is fixed to the support frame.
JP 2006-6209 A

  In the above configuration, when the grass container is attached to the rear part of the traveling machine body, the upper part of the grass container is attached to the support frame and then the lower part of the grass container is locked. It is necessary to release the engaging portion of the lock member 25 by pulling up, and when locking, it is necessary to confirm that the lock member 25 is set at a predetermined lock position, and it cannot be locked even if the lock operation is performed. There is a disadvantage that the lock operation is troublesome.

  An object of the present invention is to simplify the locking operation by allowing the lower portion of the grass collection container to be easily locked when the grass collection container is mounted.

[Configuration of the first invention]
1st invention equips a traveling machine body with a mowing apparatus, extends a conveyance duct toward the rear part of a traveling machine body from a mowing apparatus, and attaches a grass collecting container to a support frame provided in the rear part of a traveling machine body, A grass collecting device for a mower configured to connect an opening formed in a grass collecting container and a conveyance duct, and to collect the cut grass cut by the grass cutting apparatus to the grass collecting container through the conveyance duct. The container is supported so as to be rotatable about the horizontal axis on the left and right sides of the upper part of the grass collection container, and the front position of the grass collection container is separated from the support frame and opened downward, and the front of the grass collection container The unit can be switched to the mounting posture connected to the support frame so that it can be turned and attached between the support frame and the lower part of the front end of the grass container when the grass container is changed from the separated posture to the mounting posture. The grass collecting container automatically engaged with the hook urged in the engaging direction by the urging means. Wherein the with and a locking mechanism for fixing the mounting position, are provided with a switching means for switching the initial biasing force of the biasing means to the strength.

[Operation of the first invention]
According to the first aspect of the present invention, when a mowing operation is performed to release the grass that is full in the collecting container, the collecting container in the mounting posture is moved backward about the axis of the horizontal axis on the upper left and right sides. The hook at the bottom of the collecting container moves to the release side against the biasing force with the rotation of the collecting container, and the collecting container rotates to the separated position, and the mowing grass Can be released to the desired location. When returning the grass container to the mounting position, the hook opens against the biasing force by the return operation force of the grass container immediately before returning to the mounting position, and when the grass container returns to the mounting position, the biasing means The hook is locked by the initial urging force, and the grass collection container can be maintained in the mounting posture.
When removing the grass container from the traveling body, remove the upper part of the grass container from the support frame and weaken the initial urging force of the hook at the lower front end of the grass container by operating the switching means. The lower part of the can can be easily pulled out rearward, and by pulling out the grass collecting container backward, the engagement with the hook can be easily released and the grass collecting container can be removed.
When the grass container is attached to the traveling machine body, the lower portion of the grass container can be easily engaged with the hook by operating the initial biasing force of the hook to “weak”. With the support frame and the grass collection container engaged with the hook, the upper part of the grass collection container is attached to the support frame via the horizontal axis that faces left and right. Then, by operating the biasing means to make the initial biasing force of the hook “strong”, the lower portion of the grass collection container can be fixed to the support frame.
In particular, in the present invention, the lower portion of the grass collection container can be easily connected by operating the hook with an initial biasing force of “weak”.

[Effect of the first invention]
According to the first invention, the initial urging force of the urging means is weakened by the operation of the switching means, and the engaging force of the locking mechanism by the hook that locks the lower portion of the grass collecting container is loosened, whereby the grass collecting container can be easily removed. In addition, by increasing the initial biasing force of the hook during work, the hook does not loosen and the mouth of the grass collection container does not open due to the mounting posture of the grass collection container. By simply switching the power, it is easy to remove the grass collection container, and the hook can be reliably engaged at the time of operation, so that the grass collection work can be performed satisfactorily.

[Configuration of the second invention]
A second invention is the configuration of the first invention, wherein the locking mechanism is disposed on the left and right side portions of the grass collecting container, the biasing means is constituted by a coil spring, and the switching means is constituted by a swingable switching lever. When a coil spring is stretched between the switching lever and the hook, and the switching lever is switched to a weak position, the distance between the switching lever and the hook mounting portion where the coil spring is attached becomes shorter, and the biasing force of the coil spring against the hook When the switching lever is switched to the strong position, the distance between the switching lever to which the coil spring is attached and the hook mounting portion is increased, and the biasing force of the coil spring against the hook is increased.

[Operation and effect of the second invention]
According to the second invention, it is possible to change the initial urging force applied to the hook by the coil spring only by operating the switching lever, and it is possible to easily change the locking force by the hook with a simple configuration.

[Configuration of the third invention]
According to a third aspect of the invention, in the configuration of the second aspect of the invention, the switching lever is configured so that the initial biasing force of the coil spring is switched between strong and weak by operating in the left-right direction around the front-rear axis. When the switch lever is operated, the switch lever protrudes outward from the position of the left and right lateral outer ends of the grass container, and when the switch lever is operated to the strong position, the switch lever is laterally moved from the position of the lateral lateral outer edges of the grass container. It is configured to tilt to the center side.

[Operation and effect of the third invention]
According to the third aspect of the invention, when the switching lever is operated to the strong position during the operation, the switching lever is tilted to the center side in the left-right direction from the position of the left and right lateral outer ends of the grass container around the front-rear axis. There is no chance of accidental deformation during operation. When the switching lever is in the weak position, it comes out of the grass collection container so that it is easily noticed by the operator, and it is easy to recognize that the switching lever is in the weak position. Accordingly, forgetting to switch the switching lever to the strong position is reduced, and erroneous operation of the switching lever can be reduced.

[Configuration of the fourth invention]
According to a fourth aspect of the present invention, in the configuration of any one of the first to third aspects of the invention, an engaging member that engages with the hook of the lock mechanism is attached to the lower front end of the grass collection container, and the hook is attached to the support frame. A lock holding member that locks and holds the engaging member in cooperation with the hook is attached in a state where the lock holding member is positioned below the hook, and the engaging member is attached to the lock holding member from above when the grass container is mounted. A receiving member on which the grass collection container can be placed by being received is attached, the rear part can swing upward with the receiving member as a front fulcrum, and the downward swinging of the rear part is restricted by a stopper.

[Effects of the fourth invention]
According to the fourth invention, when the removed grass collecting container is mounted on the support frame at the rear of the traveling machine body, the engaging member at the lower part of the grass collecting container is lifted at a position close to the lock holding member, and the locking member is the receiving member. Even if the grass collection container is lifted in a state where it hits, the receiving member once swings upward, and when the locking member is disengaged from the lower end edge of the receiving member, the receiving member returns to the original posture, and the engaging member is locked and held. It can rest on a member or receiving member. Moreover, the distance which mounts a latching member becomes long with a lock holding member and a receiving member. This makes it easier to lock the grass collection container to the locking mechanism when the grass collection container is mounted.

[Configuration of the fifth invention]
According to a fifth aspect of the present invention, in the configuration of any one of the first to fourth aspects of the invention, positioning stays for positioning the left and right horizontal axes that support the upper part of the grass collection container when the grass collection container is mounted are arranged horizontally and horizontally. It is provided in the vicinity of the shaft.

[Effects of the fifth invention]
According to the fifth aspect of the present invention, since the positioning when connecting the upper parts of the grass collection container can be easily performed, the upper part of the grass collection container can be easily connected.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is an overall side view of a riding mower equipped with a mowing apparatus 20 according to an embodiment of the present invention. As shown in this figure, this riding-type mower is configured to be self-propelled by a pair of left and right steerable front wheels 1 and 1 and a pair of left and right driveable rear wheels 2 and 2, and a traveling machine body. A passenger-type self-propelled vehicle having a driving part equipped with a driver seat 3 provided at the rear, and a mowing apparatus 20 connected between the front and rear wheels of the body frame 4 of the self-propelled vehicle via a link mechanism 10. And a grass collecting device 8 having a grass collecting container 7 connected to the rear portion of the vehicle body frame 4.

This work vehicle performs mowing work for cutting grass and grass.
That is, the self-propelled vehicle includes an engine 5 provided at the front portion of the vehicle body frame 4 and a power take-out mechanism 40 provided below the engine 5. The power take-off mechanism 40 inputs the output of the engine 5 to the input shaft 41 via the transmission belt 42, transmits the driving force of the input shaft 41 to the power take-out shaft 43 via the hydraulically operated work clutch 45, The driving force of the power take-out shaft 43 is transmitted to the cutting blade driving mechanism 22 of the mowing device 20 through the rotating shaft 46.

  The cutting blade drive mechanism 22 rotates the cutting blade 26 by the driving force of the input shaft 22 a interlocked with the rotation shaft 46.

  The link mechanism 10 includes a pair of left and right front swing links 11, 11 supported on the vehicle body frame 4 so as to swing up and down, and a pair of left and right rear swing links 12 supported on the vehicle body frame 4 so as to swing up and down. , 12 and a pair of left and right interlocking links 13, 13.

  The front ends of the pair of left and right front swing links 11, 11 are connected to a front connecting member 23 located at the front portion of the cutting blade housing 21 of the mowing device 20. The front ends of the pair of left and right rear swing links 12, 12 are connected to a rear connection member 24 located at the rear of the cutting blade housing 21. The right and left interlocking links 13 interlock the right and left front swing links 11 and the rear swing links 12, respectively. A lift cylinder 15 is linked to one of the pair of left and right front swing links 11, 11.

  That is, in the link mechanism 10, when one of the front swing links 11 is swung by the lift cylinder 15, the pair of left and right front swing links 11, 11 swings together for interlocking with the rotation support shaft 14. When the grounding gauge wheel 25 is moved up and down with respect to the vehicle body frame 4 to support the mowing device 20 on the front and rear sides of the cutting blade housing 21, the grounding gauge wheel 25 is in contact with the ground. Ascending / descending operation is performed so that 25 rises from the ground to the non-working state.

  When the self-propelled vehicle is caused to travel with the mowing device 20 in the descending work state, the mowing device 20 causes the mowing blade drive mechanism 22 to move the two mowing blades 26 positioned side by side inside the mowing blade housing 21. A rotary body is driven to rotate around a vertical axis, and each cutting blade 26 is used to cut the grass. A wind generated by the rotation of the cutting blade 26 cuts the cut grass from a cutting grass discharge duct 27 located above the cutting blade housing 21. It discharges in the rear upward direction.

  The cut grass discharged from the cut grass discharge duct 27 is transported by the wind from the cutting blade 26 and transported between the left and right rear wheels 2, 2 in the self-propelled vehicle. It is sent to the grass collection container 7 by the guide action by the duct 6 and is collected and stored by this grass collection container 7.

  As shown in FIGS. 2 and 12, the grass collecting device 8 lowers the grass collecting container 7 by the hydraulic cylinder 34 around the horizontal axis 30 in the left-right direction with respect to the support frame 28 connected to the vehicle body frame 4. It is configured to be moved up and down to a grass collecting position (attachment posture) and a rising discharge position (separating posture).

  As shown in FIGS. 2 to 6 and 12, the support frame 28 that supports the grass collection container 7 is connected and fixed to the rear end portion of the vehicle body frame 4 through the front opening frame 29. A bracket 32 for supporting the connecting shaft 31 for detachably attaching the grass collection container 7 to a plurality of positions in the left-right direction of the horizontal shaft 30 above the support frame 28, and supporting the connecting shaft 31 and swinging the connecting shaft 31. A bracket 33 for attaching one end of the hydraulic cylinder 34 is provided.

  The support frame 28 includes a box-lid cover plate 35 opened rearward, a pair of left and right front opening frames 29 for fixing to the vehicle body frame 4 attached to the front surface of the cover plate 35, and the cover plate 35. A pair of left and right vertical frames 36 is provided. On the outer periphery of the cover plate 35, a bent piece 35a is projected rearward to form a box cover shape that is opened rearward from the upper, lower, left, and right ends so as to surround the rear with the bent piece 35a. A rectangular opening 9 is formed between the pair of front opening frames 29 so as to communicate with the rear end portion of the transport duct 6. A plate flange piece 6 a of the transport duct 6 is fixed to the opening of the opening 9.

  As shown in FIGS. 1 and 2, the grass collecting container 7 has a bottom plate made of a steel plate (not shown) connected to a lower surface of a container frame 51 in which a metal round pipe material is assembled in a box shape, and has an upper wall surface and left and right sides. The wall surface and the rear wall surface are configured in a box shape by fixing a sheet metal 52 having an appropriate size mesh, punching metal, resin or cloth. An upper cover (not shown) is provided on the upper portion of the grass collection container 7 with an appropriate distance from the upper wall surface. The upper wall surface is composed of a sheet material 52 through which air that is blown in with the cut grass from the opening 9 can be vented. In addition, the conveying air that has passed through the upper wall surface is guided by the upper cover and flows downward from the rear portion of the rear wall surface.

  The grass collection container 7 is swingable up and down about a horizontal axis 30 that is directed to the left and right with respect to the support frame 28, and is supported so as to be detachable. explain.

  The upper connection structure 55 of the grass collection container 7 is shown by FIGS. A connecting bracket 53 is fixed to upper left and right front ends of the container frame 51.

  A pair of brackets 53 are provided on the left and right of the upper front portion of the grass collection container 7 respectively. The outer bracket 53 is connected to an upper front end portion of a U-shaped frame frame 51a constituting the container frame 51, an upper end portion of left and right front side vertical frames 51b, and a front upper horizontal frame 51c. Yes. The pair of left and right brackets 53 are formed with fitting recesses 54 that are fitted to the connecting shaft 31 from the rear side, and are fixed for fixing the grass collection container 7 when the grass collection container 7 is mounted. The pin 56 and the pin operating tool 57 for operating the fixing pin 56 are penetrated and held, and the fixing pin 56 is urged to protrude inward to the retracting rod portion 57a of the pin operating tool 57 between the pair of brackets 53. A spring 58 is fitted. In the outer bracket 53, a receiving portion 53a at the upper portion of the fitting recess 54 to be fitted to the connecting shaft 31 is formed so as to protrude longer than the inner receiving portion. With the receiving portion 53a, when the grass container 7 is mounted, the receiving portion 53a is placed on the connecting shaft 31 so that the fitting recess 54 of the bracket 53 can be easily fitted to the connecting shaft 31.

  The upper portion of the grass collection container 7 is shown in FIG. 6 by pulling the operation portions 57b of the left and right pin operation tools 57 of the grass collection container 7 outward when the grass collection container 7 is attached to the support frame 28. 5 is released from the pin hole 59 formed in the bracket 32 shown in FIG. 5, the connected and fixed state of the upper portion of the grass collection container 7 is released, and the upper portion of the grass collection container 7 is released from this state. Is moved rearward, the upper part of the grass collection container 7 is detached from the connecting shaft 31.

  The lower connection structure 60 of the grass collection container 7 is shown by FIG. 2, FIG. A connecting bracket 68 is fixed to the lower left and right front ends of the container frame 51.

  The brackets 68 are provided on the left and right of the lower front end of the grass collection container 7. The bracket 68 is connected to a front end lower part of a U-shaped frame frame 51a constituting the container frame 51, a lower end part of left and right front side vertical frames 51b, and a front lower side horizontal frame 51d. On the bracket 68, an engaging member made up of an engaging pin 64 for connecting and fixing the lower portion of the grass collection container 7 projects outwardly.

  Between the lower part of the support frame 28 and the lower part of the front end of the grass collection container 7, a lock mechanism 61 for connecting and fixing the lower part of the grass collection container 7 to the support frame 28 is provided. The lock mechanism 61 includes a hook 63 pivotally supported around a fulcrum shaft 62 that is laterally laterally located on the left and right of the lower portion of the support frame 28, and an engagement pin disposed on a bracket 68 at the lower front end of the grass collection container 7. 64 and a lock holding member 65 that is provided at the lower portion of the support frame 28 and holds the engaging pin 64 in cooperation with the hook 63, and a biasing force that biases the hook 63 in a direction to engage the engaging pin 64. And a mechanism 66.

  The hook 63 is urged to rotate downward, that is, in the locking direction by a coil spring 67 as an urging means of the urging mechanism 66. In the state of FIG. 8 where the grass collection container 7 is detached, the hook 63 is restricted by the stopper 63a from rotating clockwise from the illustrated state. When the grass collection container 7 is rotated from the mowing grass discharging posture (separating posture) to the mowing grass collecting posture (mounting posture), the engagement pin 64 is released from the hook 63 shown in FIG. The hook 63 is once lifted by being slidably contacted with the inclined lower end edge 63A of the tip end portion of the hook 63, supported by the guide support portion 65A, and then cut into an inverted V shape in a side view of the hook 63 as shown in FIG. The engagement pin 64 engages with the lacked engagement portion 63B and is locked. Further, when the grass collecting container 7 is changed from the mowing grass collecting posture to the mowing grass discharging posture, the lock can be released by extending the hydraulic cylinder 34 so that the engaging pin 64 is moved away from the hook 63. ing. Note that the shape of the hook 63 between the inclined lower end edge 63A and the engaging portion 63B is a curved shape.

  As shown in FIG. 11, the urging mechanism 66 has a coil when the switching lever 69 is operated to the inside (inner position) of the grass collection container 7 as shown by a solid line in the rear view. When the tension of the spring 67 is large and the switching lever 69 is rotated around the front / rear shaft 70 and is operated outside (outside position) than the width of the grass collection container 7 as shown by a two-dot chain line, the coil The tension of the spring 67 is reduced. During normal work, the position is set at the outer position, but work can also be performed at the outer position.

  When the switching lever 69 indicated by the solid line in FIG. 11 is operated to the inner position, when the switching lever 69 is swung laterally and outwardly around the axis of the front and rear shaft 70, the inner force of the switching lever 69 is increased by the swinging operation force. The coil spring 67 extends to the dead point DP between the position and the outer position. When the dead point DP is exceeded, the coil spring 67 is shortened, and the urging force causes the switching lever 69 to swing to the outer position side so as to contact the stopper S projecting forward from the grass collection container 7 side. Accordingly, the switching lever 69 is positioned at an outer position indicated by a two-dot chain line in FIG. When the switching lever 69 is in contact with the stopper S at the outer position, the urging force of the coil spring 67 is configured to act, whereby the switching lever 69 can be held at the outer position.

  On the other hand, when the switching lever 69 is swung upwardly around the axis of the front-rear shaft 70 from the state where the switching lever 69 indicated by the two-dot chain line in FIG. The coil spring 68 extends to a dead point DP between the inner position and the outer position 69. When the dead point DP is exceeded, the coil spring 67 is shortened and the urging force causes the switching lever 69 to swing to the inner position side to contact the stopper S projecting forward from the grass collection container 7 side. Accordingly, the switching lever 69 is positioned at the inner position indicated by the solid line in FIG. In a state where the switching lever 69 is in contact with the stopper S at the inner position, the biasing force of the coil spring 67 is applied, so that the switching lever 69 can be held at the inner position.

  As described above, the grass cutter 8 of the mower is equipped with the mowing device 20 on the traveling machine body, extends the transport duct 6 from the mowing apparatus 20 toward the rear part of the traveling machine body, and is provided at the rear part of the traveling machine body. The grass collection container 7 is detachably attached to the support frame 28, the opening 9 formed in the grass collection container 7 is connected to the transport duct 6, and the cut grass cut by the mowing apparatus 20 is collected via the transport duct 6. The grass collection container 7 is configured to be collected, and supports the grass collection container 7 so as to be rotatable about a horizontal axis 30 on the left and right of the upper part of the collection container 7. Is separated from the support frame 28 and opened downward and can be switched to a mounting posture in which the front portion of the grass collection container 7 is connected to the support frame 28. The posture of the grass collection container 7 is changed from the separated position to the mounting position between the lower end of the front end of the container 7. And a lock mechanism 61 that automatically engages the hook 63 biased in the engagement direction by the coil spring 67 to fix the grass container 7 in the mounting posture. A switching lever 69 for switching the power between strength and weakness is provided.

  When the locking mechanism 61 is disposed on the left and right sides of the grass collection container 7, the coil spring 67 is stretched between the switching lever 69 and the hook 63, and the switching lever 69 is switched to a weak position, the switching lever 69 protrudes outward from the position of the left and right lateral outer ends of the grass collection container 7, the distance between the coil springs 67 is shortened, and the biasing force of the coil spring 67 against the hook 63 is weakened. Further, when the switching lever 69 is switched to the strong position, the switching lever 69 is tilted to the center in the left-right direction with respect to the position of the left and right lateral outer ends of the grass collection container 7 and the urging force against the hook 63 by the coil spring 67 is increased.

  In addition, the code | symbol 16 of FIG. 13 is a clamp metal fitting which connects the connection line of a battery, and the harness 17 for various electric devices. The base of the clamp fitting 16 is fixed to the vehicle body frame 4 and other vehicle body constituent members by spot welding or the like, and the harness 17 is held by a holding portion 16a that elastically opens and closes.

[Another embodiment]
FIG. 14 shows another embodiment of the lower connecting structure 60. The rear end portion of the lock holding member 65 constituting the lock mechanism 66 can be rotated upward from a horizontal or substantially horizontal posture, and can be rotated from the horizontal posture. The receiving member 71 of the engaging pin 64 that is restricted from rotating downward is attached. The receiving member 71 is pivotally supported by the horizontal shaft 72, and a stopper piece 73 is integrally formed at the lower end edge. The rear end edge of the lock holding member 65 is formed in a semicircular shape so that the stopper piece 73 can rotate.

  That is, in this other embodiment, the engaging pin 64 that engages with the hook 63 of the lock mechanism 61 is attached to the lower portion of the front end of the grass collection container 7, and the hook 63 and the hook 63 cooperate with the support frame 28. A lock holding member 65 that locks and holds the engagement pin 64 is attached in a state where the lock holding member 65 is positioned below the hook 63, and the engagement pin 64 is attached to the lock holding member 65 from above when the grass container 7 is mounted. A receiving member 71 on which the grass collection container 7 can be placed by being received is attached, and the receiving member 71 is swingable upward with the horizontal shaft 72 as a front fulcrum, and the downward swing is restricted by a stopper 73. is there.

Accordingly, when the detached grass collection container 7 is mounted, the engagement pin 64 at the lower part of the grass collection container 7 is lifted so as to pass near the rear of the lock holding member 65, and the engagement pin at the lower part of the grass collection container 7 is 64 is placed on the upper end edge of the lock holding member 65 or the upper end edge of the receiving member 71, and the weight of the grass container 7 is supported by the lock holding member 65 or the receiving member 71.
In the above case, when the grass collecting container 7 is lifted, even if the engaging pin 64 is lifted in a state of being directly below the receiving member 71, the receiving member 71 is once swung upward by the engaging pin 64, When the stop pin 64 is disengaged from the lower end edge of the receiving member 71, the receiving member 71 returns to the original horizontal posture, and the engaging pin 64 is easily placed on the lock holding member 65 or the receiving member 71.

  If the receiving member 71 is urged clockwise in FIG. 14 by a coil spring (not shown) fitted to the horizontal shaft 72, the receiving member 71 is surely returned to the original horizontal posture even if it is rotated counterclockwise. Since it can restore | restore, it can implement more suitably.

  15 and 16 show another embodiment of the upper connecting structure 55. A horizontal shaft 30 for rotating the grass collection container 7 about the left and right axis is supported on the upper portion of the support frame 28, and an illustration for detachably attaching the grass collection container 7 to the left and right sides of the horizontal shaft 30 is illustrated. There is provided a bracket 32a formed with a boss 75 through which a connecting shaft not inserted and a bolt holder 76 through which a lock bolt (not shown) is inserted.

  The bracket 74 at the upper front end on the grass collecting container 7 side is formed with a shaft hole 77 through which the connecting shaft is inserted together with the boss 75, a bolt hole 78 through which a lock bolt (not shown) is inserted together with the bolt holder 76, and a positioning stay 79. ing. The front surface of the stay 79 has a shape that coincides with the circular arc surface of the rear end edge of the bracket 32 a, and is formed in an arc surface drawn with a certain radius from the center of the shaft hole 77.

When mounting the grass collection container 7, the switching lever 69 is operated outward to loosen the urging force of the coil spring 67, and the engagement pin 64 at the bottom of the grass collection container 7 is locked to the hook 63. Let the lower part of the grass container 7 be connected. In this state, the inner surface of the stay 79 is brought into contact with the arc surface of the rear end edge of the bracket 32a so that the shaft hole 77 on the upper portion of the grass collection container 7 is brought close to the shaft hole 75a of the boss 75. Then, the hydraulic cylinder 34 is expanded and contracted so that the shaft hole 75a of the boss 75 and the shaft hole 77 of the bracket 74 on the grass collecting container 7 side coincide with each other, and in this state, a connecting shaft (not shown) is inserted to secure the connecting shaft. At the same time, the lock bolt 81 is inserted and screwed over the bolt hole 78 formed in the bracket 74 and the bolt insertion hole 80 of the bolt holder 76.
If positioning is performed by the stay 79 as described above, fine adjustment for centering the hole manually is not necessary, and the grass collection container 7 can be easily connected by the connecting shaft.

  In the best mode for carrying out the invention described above, when the switching lever 69 is operated to weaken the initial urging force by the urging mechanism 66, a slight tensile force is applied to the coil spring 67. However, it is assumed that the initial urging force when the switching lever 69 is operated to reduce the initial urging force includes zero (the tensile force by the coil spring 67 is “high” to “zero” in the non-tensile state). Further, when the switching lever 69 is operated to the “weak” position, the tensile force of the coil spring 67 becomes zero and the hook 63 is opened through the coil spring 67.

Overall side view of mower Side view of grass collector Rear view showing support frame with grass collecting container removed from grass collecting device Partial side view showing the upper connection structure with the grass container attached Partial side view showing the upper connection structure with the grass container removed Partial plan view showing the upper connection structure with the grass container attached Partial side view showing the lower connection structure with the grass container attached Partial side view showing the lower connection structure with the grass container removed Partial rear view showing the lock fitting in the locking mechanism of the grass collection container Hook perspective view Partial front view showing the urging mechanism Side view showing a state in which the grass collection container is lifted to the cutting grass discharge posture (a) is a perspective view showing the fastening structure of the harness, (b) is a cross-sectional view showing the fastening structure of the harness (A), (b) is the partial side view which shows the state at the time of the attachment of the grass container of another embodiment of a lower connection structure (A), (b) is a partial side view which shows the attachment or detachment state of the grass container of another embodiment of an upper connection structure The fragmentary top view which shows the detached state of the grass collection container of another embodiment of an upper connection structure

Explanation of symbols

6 Transport Duct 7 Grass Collection Container 9 Opening 20 Grass Cutting Device 28 Support Frame 30 Horizontal Horizontal Shaft 61 Lock Mechanism 63 Hook 64 Engaging Member (Engagement Pin)
65 Lock holding member 67 Biasing means (coil spring)
69 Switching means (switching lever)
79 Positioning stay

Claims (5)

A traveling machine body is equipped with a grass cutting device, a conveyance duct is extended from the grass cutting device toward the rear part of the traveling machine body, a grass collection container is detachably attached to a support frame provided at the rear part of the traveling machine body, and the grass collection container A grass-collecting device of a mower configured to connect the opening formed in the communication duct and the conveyance duct, and to collect the cut grass cut by the grass-cutting device to the grass collection container through the conveyance duct,
The grass container is supported so as to be rotatable around a horizontal axis in the left-right direction at the top of the grass container, and the front portion of the grass container is spaced apart from the support frame and opened downward. A front portion of the grass collection container is configured to be rotatable to an attachment posture connected to the support frame, and the grass collection container is separated between the support frame and a lower front end of the grass collection container. A locking mechanism for automatically engaging the hook biased in the engaging direction by the biasing means when the posture is changed from the posture to the mounting posture, and fixing the grass collection container in the mounting posture; A grass collecting apparatus for a mowing machine, comprising switching means for switching the initial urging force of the urging means between strong and weak.   The locking mechanism is disposed on the left and right side portions of the grass collection container, the urging means is constituted by a coil spring, the switching means is constituted by a swingable switching lever, and between the switching lever and the hook. When the coil spring is stretched and the switching lever is switched to a weak position, the distance between the switching lever to which the coil spring is attached and the hook mounting portion is shortened, and the urging force of the coil spring against the hook When the switching lever is switched to a strong position, the distance between the switching lever to which the coil spring is attached and the hook mounting portion is increased, and the biasing force of the coil spring against the hook is increased. The grass collecting device for a mower according to claim 1, wherein the grass collecting device is configured.   The switching lever is configured so that an initial biasing force of the coil spring is switched between strong and weak by operating in a lateral direction about a front-rear axis. When the switching lever is operated to a weak position, the switching lever It protrudes outward from the position of the left and right lateral outer ends of the container, and when the switching lever is operated to the strong position, the switching lever is tilted to the center in the left and right direction from the position of the left and right lateral outer ends of the grass collection container The grass collecting apparatus for a mower according to claim 2, which is configured.   An engagement member that engages with the hook of the lock mechanism is attached to the lower portion of the front end of the grass collection container, and the hook is held on the support frame and the engagement member is locked and held in cooperation with the hook. A member is attached with the lock holding member positioned below the hook, and the grass collecting container can be placed by receiving the engaging member from above when the grass collecting container is mounted on the lock holding member. The mowing machine according to any one of claims 1 to 3, wherein a receiving member is attached, a rear part is swingable upward with the receiving member as a front fulcrum, and a downward swing of the rear part is restricted by a stopper. Grass collecting equipment.   The positioning stay for positioning the said horizontal axis which supports the upper part of this grass collection container at the time of mounting | wearing of the said grass collection container is provided in the vicinity of the said horizontal axis. Grass mower collecting equipment.

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