JP3185642U - Mower - Google Patents

Abstract

[PROBLEMS] To provide a mower capable of improving straight running performance in a walk-type mower capable of cutting an upper surface and a slope such as a bank or a bank.
A traveling unit comprising an engine, a transmission case that houses a transmission that shifts power from the engine, traveling wheels that are driven by transmission of power after shifting, and an operation handle. And a walk-type mower 1 provided with a mowing unit 3. The mowing unit 3 includes a front mower 30 that is disposed in front of the traveling unit 2 and mows the upper surface of the shoreline, and a side mower 40 that is supported by the side of the front mower 30 so as to be swingable and trims the slope. An auxiliary wheel 50 rotated by a predetermined angle with respect to the traveling direction and a weight device 60 for applying a load in the grounding direction to the auxiliary wheel 50 are disposed at the front portion of the front mower 30.
[Selection] Figure 2

Description

  The present invention relates to a mower that cuts weeds and the like on a bank or a bank. Specifically, the present invention relates to a mower that can cut both the upper surface and slope of the ridge simultaneously.

  Conventionally, one front wheel is provided at the front part of the traveling vehicle body, one drive wheel is provided at the rear part of the traveling vehicle body, a main cutter is disposed between the front wheel and the driving wheel, and a sub-cutter is disposed on the side of the traveling vehicle body. There is a known mower with a swingable arrangement (see Patent Document 1).

JP-A-11-155334

  The front wheel of the mower is provided with a spike member on the outer periphery to improve the stability of straight traveling. However, since the mower is configured to travel with two front and rear wheels, when the sub-cutter is cutting the slope, it is inclined to the lower side of the slope due to the weight of the sub-cutter, and toward the lower side of the slope. There was a tendency to run. In particular, conventional walking-type slope mowers used blade blades, so they were light and easy to steer, but slope mowers equipped with flail blades were heavier and therefore faced down the slope. The tendency to progress was high. The present invention seeks to provide a technique for improving the straight running performance in a walk-type mower capable of cutting the upper surface and slope of a shore.

The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.
That is, according to claim 1, a traveling unit including an engine, a transmission case that houses a transmission that shifts power from the engine, traveling wheels that are driven by transmission of power after shifting, and an operation handle. A walk-type mower having a mowing unit, the mowing unit being disposed in front of the traveling unit and mowing the upper surface of the shore, and supported swingably to the side of the front mower A side mower that cuts the slope, and at the front of the front mower, an auxiliary wheel that is rotated by a predetermined angle with respect to the traveling direction, and a weight device that applies a load to the auxiliary wheel in the grounding direction; Is provided.

  According to a second aspect of the present invention, the weight device is configured such that the weight is detachable and the load can be changed.

According to a third aspect of the present invention, the auxiliary wheel is provided with an angle adjusting means.
According to a fourth aspect of the present invention, the front mower and the side mower are constituted by flare mowers.

  In the above configuration, the present invention has the following effects. That is, the straightness of the mower is further improved, the steering operation can be facilitated, and the cutting accuracy can be improved.

The side view which showed the whole structure of the mower which concerns on embodiment of this invention. FIG. The perspective view of a cutting part. The figure which shows a power transmission structure. The perspective view which shows the attachment structure of an auxiliary wheel and a weight. The top view which shows other embodiment of an auxiliary wheel.

The overall configuration of the mower 1 will be described with reference to FIGS. 1 and 2. The front, rear, left and right are defined with the F direction as the front.
The mower 1 includes a traveling unit 2 and a cutting unit 3.
The traveling unit 2 includes an engine 21 serving as a power source, a transmission case 22 that houses a transmission that shifts power from the engine 21, traveling wheels 23 that are driven by transmission of power after shifting, and an operation handle 24. With. The traveling unit 2 is a management machine in this embodiment.

  The engine 21 is placed on the engine frame 11 protruding rearward from the mission case 22. The output shaft 21a of the engine 21 is protruded to the right to fix a pulley, and transmits power to the pulley on the input shaft 22a protruding to the side from the upper side of the transmission case 22 via a belt.

  The transmission case 22 houses a transmission, and a main transmission lever 25 projects rearward from the upper side of the transmission case 22 so that the traveling speed can be changed by operating the main transmission lever 25. An axle 26 is supported in the left and right horizontal direction at the lower part of the transmission case 22 and protrudes on both sides, and traveling wheels 23 and 23 are fixed to the axles 26 and 26.

  The base of the operation handle 24 is attached to the upper surface of the mission case 22 so as to be able to change back and forth. A main clutch lever, a side clutch lever, an accelerator lever and the like (not shown) are arranged at the rear of the operation handle 24.

  A traveling unit-side hitch 27 is provided in the front part of the transmission case 22 in the middle of the upper and lower sides, and a cutting unit 3 as a working machine is detachably attached. However, the structure which fixes the cutting part 3 to the mission case 22 so that attachment or detachment is impossible may be sufficient. Further, the operation handle 24 may be fixed.

Next, the structure of the cutting part 3 is demonstrated from FIG. 1 thru | or FIG.
The cutting unit 3 includes a support bracket 29, a front mower 30 and a side mower 40. The front mower 30 is disposed in front of the traveling unit 2, and the side mower 40 is disposed on the side of the front mower 30, and cuts the weeds that grow on the shores and levee. Specifically, the front mower 30 and the side mower 40 are arranged so as to be partially overlapped when viewed from the front, so that there is no leftover, and the right front portion of the side mower 40 partially overlaps the left rear portion of the front mower 30 when seen in plan view. The side mower 40 is disposed so as to be shifted rearward with respect to the front mower 30. Then, the side mower 40 is attached to the front mower 30 so as to be swingable up and down, so that the upper surface of the shoreline, the bank, etc. and the two surfaces of the slope can be trimmed.

  The support bracket 29 attaches the front mower 30 and the side mower 40 to the traveling part side hitch 27 and supports the power transmission part 70. The support bracket 29 includes support plates 29a and 29a made of a plate material extending in the front-rear direction and arranged in parallel in the left-right direction. A cutting portion side hitch 29b is fixed to the rear end of the support bracket 29 so that the cutting portion 3 can be attached to and detached from the traveling portion side hitch 27 of the traveling portion 2. A front mower 30 is fixed to the front portion of the support bracket 31 (support plate 29a). A side mower 40 is supported on the left side of the support bracket 31 via a hinge (not shown) so as to be swingable up and down. As shown in FIG. 3, a connecting member 28 made of a chain is interposed between the support bracket 29 and the side mower 40, and the maximum swing of the side mower 40 is adjusted by adjusting the connecting length of the connecting member 28. The angle can be limited. However, the connecting member 28 can also be configured by a wire, a link, or the like.

The front mower 30 includes a mower cover 32, a cutting shaft 33, a flail blade 34, an auxiliary wheel 50, a weight device 60, and the like.
The mower cover 32 covers the upper part of the flail blade 34 serving as a cutting blade, and supports the cutting shaft 33 so as to be rotatable in the horizontal direction. A well-known flail blade 34, 34,... Is swingably supported around the cutting shaft 33 at an appropriate interval. In other words, the flail blade 34 swings away when it comes into contact with a hard stone or the like, and can be prevented from being damaged. In this way, the flermore is constituted.

The auxiliary wheel 50 includes a mounting bracket 51, a wheel 52, a wheel support 53, and the like, and is attached to the front portion of the front mower 30 on the side mower 40 side.
The mounting bracket 51 includes a support frame 51a and a support pipe 51b. The support frame 51a is fixed to the left outer surface of the mower cover 32 of the front mower 30 in the front-rear direction, the front end of the support frame 51a projects forward from the front end of the mower cover 32, and the support pipe 51b is the center of the front end of the support frame 51a. Is fixed in the vertical direction.

The wheel support 53 includes a support rod 53a and a wheel mounting portion 53b. The support rod 53a is fixed by inserting the upper portion into the support pipe 51b, and the wheel mounting portion 53b is fixed at the lower end. The wheel mounting portion 53b is formed in an inverted U shape and supports the wheel 52 rotatably at the lower portion thereof.
The wheel 52 is formed with protrusions 52a, 52a,... In the radial direction on the outer periphery so as to increase the grounding resistance, thereby preventing slippage. The shape of the protrusion 52a is not limited, and can be configured in a pin shape (FIG. 1), a triangular shape (star shape, FIG. 3), or the like.

Height adjusting means and angle adjusting means 54 are formed between the wheel support 53 and the mounting bracket 51. That is, the support rod 53a is formed in a round bar shape, and is configured to be inserted into the support pipe 51b so as to be slidable in the vertical direction and fixed at a desired height. Thus, the angle adjusting means 54 is provided so that the support rod 53a can be fixed.
As shown in FIG. 5, in the angle adjusting means 54, fixing holes 51c, 51d, 51e penetrating in the diametrical direction are opened in the support pipe 51b at every predetermined angle, and the support rod 53a is opened at the same angle. Fixing holes 53c, 53d, and 53e penetrating in the diameter direction are opened in the vertical direction according to the vertical intervals of the fixing holes 51c, 51d, and 51e. However, the number of fixing holes is not limited. If the strength is sufficient, the fixing holes 51c, 51d, and 51e can be provided on the same plane. Moreover, the structure which provides the fixing holes 53c * 53d * 53e for every predetermined angle may be sufficient.

  Thus, the angle adjusting means 54 inserts and fixes the fixing pin 55 into any one of the fixing hole 51c and the fixing hole 53c, the fixing hole 51d and the fixing hole 53d, and the fixing hole 51e and the fixing hole 53e. The angle (traveling direction) can be adjusted. By adjusting the angle of the traveling direction of the wheel 52, the straightness of the mower 1 can be adjusted. That is, when the horizontal plane is widely cut by the front mower 30 and the side mower 40, the fixing holes 51c and the fixing holes 53c are fixed by the fixing pins 55 with the wheels 52 directed in the straight direction. When cutting a slope with a large inclination angle with the side mower 40 (double-sided cutting), or when cutting a wide slope with the front mower 30 and the side mower 40 (single-sided cutting), the grass mower 1 has its own weight toward the lower side of the slope. In order to advance, the angle α of the traveling direction of the wheel 52 is fixed according to the inclination angle of the inclined surface (by selecting the fixing hole 51d and the fixing hole 53d, and the fixing hole 51e and the fixing hole 53e).

  Further, the height adjusting means inserts and fixes the fixing pin 55 so as to match with any of the fixing holes 53c, 53d, and 53e at any angle of the fixing holes 51c, 51d, and 51e. The height can be adjusted. The cutting height of the front mower 30 can be adjusted by changing the height of the wheel 52.

  Further, the angle adjusting means 54 may be configured as shown in FIG. That is, a fan-shaped plate 56 is fixed to the support pipe 51b, and fixing holes 56a, 56a,... Are concentrically opened on the plate 56 at appropriate angles, and the fixing arm 57 projects radially from the support rod 53a. The fixing hole 57a is aligned with the fixing hole 56a at the tip of the fixing arm 57, and the fixing holes 56a and 57a are aligned at a desired angle, and the fixing pin 55 is inserted and fixed. However, the configuration of the angle adjusting means 54 is not limited, and the angle adjusting means 54 forms a chrysanthemum between the support pipe 51b and the support rod 53a, or fastens and fixes the support rod 53a with a bolt. You can also. In addition, the fixing hole 56a is configured as an arc-shaped elongated hole, and can be fixed at an arbitrary angle by tightening with a bolt / nut passing through the fixing hole 56a and the fixing hole 57a.

  The weight device 60 is disposed in the vicinity of the auxiliary wheel 50, and a load is applied to the auxiliary wheel 50 in the ground contact direction so that the protrusion 52a of the wheel 52 bites into the traveling surface so that the traveling direction of the mower 1 is stabilized. In the present embodiment, the weight device 60 is disposed on the front portion of the mounting bracket 51.

The weight device 60 includes a weight attachment portion 61 and a weight 62, and a plurality of weights 62 are detachably attached to the weight attachment portion 61.
In the weight mounting portion 61, a plate-shaped base 61a is fixed on the front side of the mounting bracket 51 or the mower cover 32, and a fitting rod 61b is erected on the central upper surface of the base 61a.

  The weight 62 is formed of a lump made of steel, and in this embodiment is formed in a rectangular parallelepiped shape. An insertion hole 62a having a size capable of inserting the fitting rod 61b is opened through the center in the vertical direction. Yes. Thus, the number of weights 62 is determined in accordance with the traveling state of the mower 1, and the necessary number (necessary weight) of weights 62 is attached to the fitting rod 61b. However, the shape of the weight 62 can be configured as a donut shape or a spherical shape, and is not limited. Further, the mounting configuration of the weight 62 with respect to the weight mounting portion 61 is not limited, and a configuration in which a locking portion is formed on the mounting bracket 51 or the mower cover 32 and a hook is formed on the weight 62 to be engaged may be employed. Moreover, the configuration is not limited to the upper surface of the mounting bracket 51 or the mower cover 32, and may be configured to be mounted on the side surface or the front surface.

The side mower 40 includes a mower cover 42, a cutting shaft 43, a flail blade 44, an auxiliary wheel 45, and the like.
Since the mower cover 42, the cutting shaft 43, the flail blade 44, and the auxiliary wheel 45 have substantially the same configuration as the mower cover 32, the cutting shaft 33, the flail blade 34, and the auxiliary wheel 50 of the front mower 30, the description thereof is omitted.

Next, the structure of the power transmission part 70 is demonstrated from FIG. 1, FIG.
An output pulley 71 is fixed to the input shaft 22 a of the mission case 22. A transmission shaft 72 is horizontally mounted on the right side of the support bracket 29, and a side mower driving pulley 73 and a transmission pulley 74 are fixed to the transmission shaft 72. The other end of the transmission shaft 72 is connected to the cutting shaft 43 of the side mower 40 via a universal joint 77, and a belt 75 is wound between the output pulley 71 and the side mower driving pulley 73. It is possible to transmit power to. Thus, when the side mower 40 cuts the slope, power can be reliably transmitted even if it swings up and down.

  A front mower driving pulley 76 is fixed to one end of the cutting shaft 33 of the front mower 30, and a belt 78 is wound between the transmission pulley 74 and the front mower driving pulley 76, and the engine 21 moves from the engine 21 to the front mower 30. Power can be transmitted. However, a configuration in which power is transmitted from the PTO shaft provided in the mission case 22 to the front mower 30 and the side mower 40 is also possible. Further, it is possible to adopt a chain transmission system instead of the belt transmission system.

  As described above, the vehicle includes the engine 21, the transmission case 22 that houses the transmission that changes the power from the engine 21, the traveling wheel 23 that is driven by the power after the transmission, and the operation handle 24. A walk-type mower 1 having a portion 2 and a mowing unit 3, wherein the mowing unit 3 is disposed in front of the traveling unit 2 and mows the upper surface of the shore, and the front mower 30. A side mower 40 that is supported so as to be swingable on the side of the front mower and cuts the slope, and an auxiliary wheel 50 rotated at a predetermined angle with respect to the traveling direction at the front portion of the front mower 30 and the auxiliary wheel 50 And a weight device 60 for applying a load in the grounding direction, so that when the front mower 30 cuts the upper surface of the shore and the side mower 40 cuts the slope, the weight of the airframe lowers the slope. Even longer auxiliary wheel 50 is canceled directed to proceed to slope upwardly, mower 1 can travel in the straight direction. Even if the cutting running surface is soft or uneven, the auxiliary wheel 50 is pressed against the grounding surface by the weight device 60, so that the traveling direction by the auxiliary wheel 50 is stabilized, and the straight running performance is improved. Reduces leftovers and improves cutting efficiency.

  Further, the weight device 60 is configured so that the weight 62 can be attached and detached, and the load 62 can be attached and detached so that the load can be changed. Can be adjusted to adjust straight running performance.

  Further, since the auxiliary wheel 50 is provided with the angle adjusting means 54, the angle of the auxiliary wheel 50 can be adjusted in accordance with the traveling direction when traveling on the slope, and the traveling direction of the auxiliary wheel 50 can be easily corrected.

  Further, since the front mower 30 and the side mower 40 are composed of flare mowers, cutting work can be performed even in a work place mixed with gravel and the like, and the versatility of the cut work place can be improved.

DESCRIPTION OF SYMBOLS 1 Mower 2 Traveling part 3 Cutting part 21 Engine 22 Mission case 23 Traveling wheel 24 Operation handle 30 Front mower 40 Side mower 50 Auxiliary wheel 54 Angle adjusting means 60 Weight device 62 Weight

Claims (4)

  A walking type comprising an engine, a transmission case that houses a transmission for shifting power from the engine, a traveling wheel that is driven by transmission of power after shifting, a traveling unit that includes an operation handle, and a cutting unit The mower is a front mower that is disposed in front of the traveling unit and cuts the upper surface of the shore, and a side mower that is supported swingably on the side of the front mower and cuts the slope. The front mower is provided with an auxiliary wheel rotated by a predetermined angle with respect to the traveling direction and a weight device for applying a load to the auxiliary wheel in the ground contact direction. And mower.   The mower according to claim 1, wherein the weight device is configured so that a weight can be attached and detached, and the load can be changed.   The mower according to claim 1, wherein the auxiliary wheel is provided with angle adjusting means.   The mower according to claim 1, wherein the front mower and the side mower are constituted by a flare mower.

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