JP6316679B2 - Walking type work machine - Google Patents

Description

  The present invention is a walking type that is provided with a steering handle that is supported by the aircraft body and that extends along the longitudinal direction of the aircraft, a fuel tank that is placed and supported on the aircraft body, and a tank cover that covers the fuel tank. It relates to work equipment.

  For example, the following Patent Document 1 describes a conventional walking type work machine. In the walking type working machine described in Patent Document 1, a steering handle ("Handle" in Patent Document 1) that is supported by the body body ("Airframe" in Patent Document 1) and extends along the longitudinal direction of the body; A fuel tank ("Fuel tank" in Patent Document 1) that is placed and supported on the machine body and a tank cover ("Protective cover" in Patent Document 1) that covers the fuel tank are provided.

  On the lateral side surface of the tank cover, there is provided a remaining amount confirmation window for confirming the remaining amount of fuel in the fuel tank from the lateral outer side of the fuselage.

Japanese Patent No. 4617201 [FIGS. 1 and 3 (a)]

  However, in the conventional technology, the entire fuel tank is located on the inner side of the fuselage with respect to the lateral surface of the tank cover, so to check the remaining amount of fuel in the fuel tank through the remaining amount confirmation window on the tank cover. The pilot had to go around to the outside of the tank cover and see the fuel tank located inside the fuselage confirmation window. For this reason, it is difficult for the operator to check the remaining amount of fuel in the fuel tank from the steering handle side through the remaining amount confirmation window during the operation of operating the steering handle.

  In view of the above circumstances, it has been desired to provide a walking work machine that can easily check the remaining amount of fuel in the fuel tank from the steering handle side.

The present invention
A steering handle that is supported by the aircraft body and extends along the longitudinal direction of the aircraft,
A fuel tank placed and supported on the aircraft body;
A tank cover for covering the fuel tank,
A transparent or translucent protruding portion that protrudes laterally outward of the fuselage from the lateral side surface of the tank cover is provided on the lateral side surface of the fuel tank,
The steering handle can be changed in posture to a normal posture extending to one side in the longitudinal direction of the aircraft and a reverse posture extending to the other side in the longitudinal direction of the aircraft.
Of the protrusions, one side part in the longitudinal direction of the aircraft or the other side part in the longitudinal direction of the aircraft is configured to be transparent or translucent,
The steering handle is configured such that a grip portion is positioned higher than the fuel tank,
The one side portion or the other side portion is provided with an inclined surface facing obliquely upward in a side view of the body.

According to the present invention, most of the fuel tank is covered with the tank cover, and the fuel tank is suitably protected by the tank cover. On the other hand, a transparent or translucent protruding portion, which is a part of the fuel tank, protrudes from the lateral side of the tank cover to the outer side of the body. Therefore, it becomes possible for the operator to easily see the transparent or translucent protrusion on the fuel tank from the steering handle side, and the remaining amount of fuel in the fuel tank through the protrusion even during the operation of operating the steering handle. Confirmation can be performed easily.
Thus, according to the present invention, the remaining amount of fuel in the fuel tank can be easily confirmed from the steering handle side.
Furthermore, according to the present onset bright, since the grip portion of the steering wheel is positioned higher than the fuel tank, the operator operating the grip portion of the steering wheel is in overlooking the projecting portion obliquely downward from the steering wheel side Become. Therefore, one side portion or the other side portion of the projecting portion is provided with an inclined surface that faces obliquely upward in a side view of the body. Thereby, on the side where the inclined surface is provided in the one side portion and the other side portion of the protruding portion, the driver's line of sight on the steering handle side is substantially orthogonal to the inclined surface, and the surface of the protruding portion is It is suppressed that it becomes difficult to visually recognize the inside of the protrusion due to irregular reflection of the generated light, and the visibility of the fuel in the fuel tank can be improved.
Furthermore, according to the present onset bright, when the steering handle and normal posture from steering wheel side of the normal posture, by viewing the one side portion of a transparent or semi-transparent of the protruding portion of the fuel tank The remaining amount in the fuel tank can be checked. When the steering handle is in the reverse posture, the remaining side in the fuel tank is visually confirmed from the opposite side of the steering handle in the reverse posture by visually observing the other side portion of the protruding portion of the fuel tank that is transparent or translucent. Confirmation can be made. As described above, the remaining amount of fuel in the fuel tank can be confirmed by the protruding portion from the steering handle side in either case where the steering handle is in the normal posture or in the reverse posture of the steering handle. it can.

  In the present invention, it is preferable that a window portion through which the protruding portion is passed is formed on a lateral side surface of the tank cover.

  According to the said structure, since the protrusion part of a fuel tank is made to pass the window part formed in the side surface of a tank cover, the peripheral location of the protrusion part in a fuel tank can be covered with a tank cover.

  In the present invention, it is preferable that the protruding portion is provided at a location near the lower end side of the lateral side surface of the fuel tank.

  According to the above configuration, only when the remaining amount of fuel in the fuel tank has decreased to some extent, the liquid level of the fuel appears in the protrusion. Therefore, the operator can know that the remaining amount of fuel is sufficient when the liquid level of the fuel does not appear in the protruding portion, and can concentrate on the work without worrying about the remaining amount of fuel. .

  In the present invention, it is preferable that a side surface above the protruding portion of the lateral side surface of the fuel tank is covered with the tank cover.

  According to the above configuration, since the tank cover covers the upper side surface of the protruding portion of the lateral side surface of the fuel tank, it is possible to provide a tank cover in which a decrease in rigidity is suppressed to a small level, and the fuel tank is Can cover a wide range.

It is the whole walk type work machine right side view. It is a whole top view of a walk type work machine. It is a perspective view of the walk type work machine shown from the viewpoint looked down diagonally downward from the steering handle side. It is a whole right view explaining the attitude | position change with the normal attitude | position of a steering handle, and a reverse attitude | position. It is a top view of a rotation lock mechanism. It is VI-VI sectional drawing in FIG. 5, (a) shows the state which the pin member fitted in the hole, and (b) shows the state which the pin member escaped from the hole.

Hereinafter, an embodiment which is an example of the present invention will be described with reference to the drawings.
As shown in FIGS. 1, 2, and 4, an aircraft 11, a mission case 12, a fuel tank 13, a left and right side are included in a body body 10 of a walking type management machine (an example of a “walking type working machine”). A pair of tank covers 14, a traveling device 15, a rotary working device 16, and a steering handle 17 are provided.

  As shown in FIGS. 1 and 4, the engine 11 is supported on a body frame 18 of the body body 10. The mission case 12 is located behind the body of the engine 11. The traveling device 15 is located below the engine 11 and the transmission case 12. The traveling device 15 is located between the engine 11 and the transmission case 12 in the longitudinal direction of the aircraft. The rotary work device 16 is located below the engine 11 and the transmission case 12. Further, the rotary working device 16 is positioned behind the engine 11, the transmission case 12, and the traveling device 15 in the longitudinal direction of the aircraft.

  The traveling device 15 is composed of, for example, a single wheel. The traveling device 15 is supported by the transmission case 12 via a transmission case 19. The rotary working device 16 is provided with a plurality of tilling claws 21 that are rotationally driven. The rotary working device 16 is supported by the mission case 12 via a rotary case 20. On the rear side of the rotary case 20, left and right rotary covers 22 that cover the top of the tilling claws 21 are provided.

[About fuel tank]
As shown in FIGS. 1 to 4, the fuel tank 13 is placed and supported on the upper part of the body body 10. Specifically, the fuel tank 13 is supported by a tank stay 24 supported on the upper part of the engine 11. The tank stay 24 has an L-shape when viewed from the side. The fuel tank 13 is made of a resin such as high-density polyethylene, for example. The fuel tank 13 is formed in a hollow shape by blow molding. The fuel tank 13 is formed thin so as to be translucent to the extent that light can be transmitted from the outside. The fuel tank 13 is provided with a tank body 25 located on the inner side of the airframe from the tank cover 14 and a protrusion 26 located on the outer right side of the airframe from the tank cover 14. When the fuel tank 13 is formed by blow molding, the protruding portion 26 and the tank body 25 are integrally formed.

[About the tank cover]
As shown in FIGS. 1 to 4, the tank cover 14 has a curved shape that protrudes upward as a whole. The tank cover 14 covers the upper side and both lateral side surfaces of the tank body 25 of the fuel tank 13. The tank cover 14 is supported by the tank stay 24 and the fuel tank 13. That is, both the fuel tank 13 and the tank cover 14 are supported by the tank stay 24. The tank cover 14 is detachable from the tank stay 24 and the fuel tank 13. A cutout portion 27 (an example of a “window portion”) notched upward is provided at the lower edge portion of the right lateral surface of the lateral side portion of the tank cover 14. The notch 27 is formed in a range not reaching the upper end of the tank cover 14.

[About the protruding part of the fuel tank]
As shown in FIGS. 2 and 3, the protruding portion 26 is provided on the right lateral surface of the lateral side portion of the fuel tank 13, and protrudes outward from the right lateral surface of the tank cover 14 to the right lateral side of the body. As shown in FIGS. 1 to 4, the protruding portion 26 protrudes to the right side of the body so as to pass through the cutout portion 27. Of the right lateral surface of the fuel tank 13, the upper side surface of the protrusion 26 is covered with the tank cover 14. Since the protruding portion 26 of the fuel tank 13 passes through the cutout portion 27 of the tank cover 14, when the tank cover 14 is attached to the fuel tank 13, the fuel tank 13 and the tank cover 14 Interference is prevented.

  The protrusion 26 protrudes from the right side surface of the tank body 25 so as to bulge out from the right side of the machine body to the right side outward. The protrusion 26 is provided at a location near the lower end of the right lateral surface of the fuel tank 13. The height of the protruding portion 26 is about half of the entire height of the fuel tank 13. The lower surface of the protruding portion 26 is flush with the lower surface of the tank body 25.

  As shown in FIGS. 2 and 3, the entire protrusion 26 is translucent. That is, the rear portion 29 (an example of “one side portion”) and the front portion 30 (an example of “the other side portion”) in the longitudinal direction of the aircraft are configured to be translucent. . As shown in FIGS. 1 and 4, the protruding portion 26 has a substantially trapezoidal shape close to a triangular shape in a side view. A substantially vertical vertical surface 32 is provided on a rear side portion 29 in the longitudinal direction of the body of the protrusion 26. A front side portion 30 in the front-rear direction of the body of the projecting portion 26 is provided with an inclined surface 33 that faces obliquely upward in a side view of the body.

[About the steering wheel]
As shown in FIG. 1, FIG. 3, FIG. 4, and FIG. 5, the support end 35 located on the airframe body 10 side in the steering handle 17 is supported by the fixed bracket 36 of the airframe body 10. The fixing bracket 36 is fixed to the upper part of the mission case 12. The support end portion 35 of the steering handle 17 is located between the traveling device 15 and the rotary working device 16 in the longitudinal direction of the body. The steering handle 17 extends along the front-rear direction of the fuselage with the support end 35 as a base point. The steering handle 17 has left and right handle rods 38 extending from the support end portion 35 in the longitudinal direction of the fuselage, and a grip portion 39 provided at an end portion of the left and right handle rods 38 opposite to the support end portion 35. , Is provided. The middle portions of the left and right handle rods 38 are connected to each other by a horizontal connecting rod 40. As shown in FIGS. 1 and 4, the steering handle 17 is configured such that the handle rod 38 extends obliquely upward, and thereby the grip 39 is positioned higher than the fuel tank 13. .

  As shown in FIG. 4, the steering handle 17 has a normal posture A1 in which the handle rod 38 extends toward the rear side of the aircraft (an example of “one side in the longitudinal direction of the aircraft”), and the handle rod 38 extends from the rear side of the aircraft. The posture can be changed to a reverse posture A2 extending toward the front side (an example of “the other side in the longitudinal direction of the machine body”). When the steering handle 17 is in the normal posture A1, the grip portion 39 is located on the same side as the rotary working device 16 with respect to the support end portion 35. When the steering handle 17 is in the reverse position, the grip portion 39 is located on the opposite side of the rotary working device 16 with respect to the support end portion 35 and on the same side as the traveling device 15 and the engine 11. When the steering handle 17 is in the normal posture A1, the direction from the rear of the aircraft toward the front of the aircraft is the traveling direction of the aircraft body 10. On the other hand, when the steering handle 17 is in the reverse posture A2, the direction from the front of the aircraft toward the rear of the aircraft is the traveling direction of the aircraft body 10.

  Since the configuration as described above is adopted, as shown in FIG. 3, when the steering handle 17 is set to the normal posture A1, the operator can connect the tank cover 14 from the steering handle 17 side in the normal posture A1. The remaining amount of fuel in the fuel tank 13 can be checked by visually recognizing the rear side portion 29 of the translucent protrusion 26 that protrudes to the outer right side of the aircraft. As understood from FIG. 4, when the steering handle 17 is set in the reverse posture A2, the driver visually recognizes the front side portion 30 of the translucent protrusion 26 from the steering handle 17 side in the reverse posture A2. By doing so, the remaining amount of fuel in the fuel tank 13 can be confirmed. Thus, when checking the remaining amount of fuel in the fuel tank 13, it is not necessary for the operator to go around to the right lateral outside of the body of the fuel tank 13, and in a working posture where the operator stands on the steering handle 17 side, It is possible to easily check the remaining amount of fuel in the fuel tank 13.

[Rotation lock mechanism]
As shown in FIG. 4, the steering handle 17 can be changed in posture between the normal posture A1 and the reverse posture A2 by rotating around the handle axis X1. The steering handle 17 is configured to be switchable between a non-rotatable locked state and a rotatable release state by a rotation lock mechanism 43 shown in FIGS. 1 and 3 to 6. As shown in FIGS. 5 and 6, the rotation lock mechanism 43 includes the fixed bracket 36, the movable bracket 44, the pin member 45, the handle lock lever 46, and a spring member 47 including a compression spring. , Is provided.

  As shown in FIGS. 4 to 6, the movable bracket 44 is supported on the upper portion of the fixed bracket 36 so as to be relatively rotatable around the handle shaft center X <b> 1. The steering handle 17 is fixed to the movable bracket 44 via a connecting member 42. The movable bracket 44 is provided with a plurality of vertically oriented holes 50. The pin member 45 is rotatably supported around a pin axis X2 parallel to the handle axis X1 in a vertical cylinder 52 fixed to the rear part of the fixing bracket 36, and the pin axis X2 The movable bracket 44 can be moved in and out of the hole 50 in the direction. The pin member 45 is urged toward the hole 50 side of the movable bracket 44 by a spring member 47 disposed between the enlarged diameter portion 45A of the pin member 45 and the stopper 52A fixed in the cylindrical portion 52. . The handle lock lever 46 is fixed to the lower end portion of the pin member 45 and extends from the pin member 45 toward the rear of the machine body.

  As can be understood from FIGS. 5 and 6, the pin handle 45 is fitted into the left and right central holes 50 on the rear side among the plurality of holes 50, whereby the steering handle 17 assumes the normal posture A <b> 1. And when the pin member 45 fits in the hole 50 of the left-right center of the front side among the some hole parts 50, the steering handle 17 will be in reverse posture A2. In addition, the pin member 45 is fitted into the holes 50 other than the left and right center holes 50 on the rear side and the left and right center holes 50 on the front side among the plurality of holes 50, so that the steering handle 17 is moved forward and backward. The posture can be inclined with respect to the direction.

  As shown in FIG. 6, a plate-like locking member 55 is fixedly provided on the handle lock lever 46 side of the fixed bracket 36. The locking member 55 includes a first locking portion 53 that can lock the handle lock lever 46 and a second locking portion 54 that is positioned below the first locking portion 53. The second locking part 54 is adjacent to the first locking part 53 in the circumferential direction of the pin axis X2. When the handle lock lever 46 is locked to the first locking portion 53, the pin member 45 is fitted into the hole 50 of the movable bracket 44, and the steering handle 17 is locked. By pulling down the handle lock lever 46 downward and withdrawing the pin member 45 downward from the hole 50 of the movable bracket 44, the steering handle 17 is released. When the handle lock lever 46 is rotated around the pin axis X2 from the position below the first locking portion 53 and locked to the second locking portion 54, the pin member 45 is moved into the hole of the movable bracket 44. The steering handle 17 can be maintained in the released state by being held in a state of being pulled out from the portion 50.

  As described above, the steering handle 17 can be switched between the locked state and the released state by a simple operation of the handle lock lever 46. Since the steering handle 17 can be maintained in the released state by locking the handle lock lever 46 to the second locking portion 54, the control handle 17 can be released with the hand released from the handle lock lever 46. Can be rotated.

[Inclination of the handle shaft]
As shown in FIG. 4, the mating surface D where the upper surface of the fixed bracket 36 and the lower surface of the movable bracket 44 face each other is inclined so as to be positioned downward from the front of the body toward the rear of the body. The handle axis X1 perpendicular to the mating surface D is an axis inclined obliquely rearward from the vertical axis. By setting the handle axis X1 to be tilted rearward in this manner, the height position of the grip portion 39 of the steering handle 17 in the normal posture A1 is higher than the height position of the grip portion 39 of the steering handle 17 in the reverse posture A2. The height can be reduced by t.

  By the way, when turning the walking type management machine, an operation of lifting the rotary working device 16 from the ground is required. When the steering handle 17 is in the normal posture A1, the rotary working device 16 is lifted from the ground by lifting the grip 39 of the steering handle 17 upward. On the other hand, when the steering handle 17 is in the reverse posture A2, the grip body 39 of the steering handle 17 is pushed downward to swing the body body 10 with the traveling device 15 as a fulcrum, thereby rotating the rotary working device 16. Lift from the ground.

  As described above, when the steering handle 17 is in the normal posture A1, the height position of the grip portion 39 is lower by the predetermined height t than when the steering handle 17 is in the reverse posture A2. This makes it easier for the operator to apply force when lifting the grip portion 39 of the steering handle 17 in the normal posture A1, and also allows the operator to push down the grip portion 39 of the steering handle 17 in the reverse posture A2. The operating force can be reduced. Therefore, in both cases where the steering handle 17 is in the normal posture A1 and in the reverse posture A2, it is possible to easily perform the operation of lifting the rotary working device 16 from the ground, and as a result, the turning operation of the machine body 10 is performed. Can be made easy.

[Another embodiment]
Hereinafter, another embodiment of the present invention will be described. In each of the following embodiments, configurations other than the configuration described are the same as those in the above embodiment. Moreover, the said embodiment and each following another embodiment can mutually be combined unless a contradiction arises. Note that the scope of the present invention is not limited to the above-described embodiment and the following separate embodiments.

  (1) Although the translucent fuel tank 13 is shown as an example in the above embodiment, the present invention is not limited to this. For example, another transparent fuel tank 13 may be used. Further, for example, other fuel tanks other than the projecting portion 26 may be opaque and only the projecting portion 26 may be translucent or transparent. Further, for example, only the rear portion 29 and the front portion 30 of the projecting portion 26 may be other translucent or transparent fuel tanks.

  (2) In the above embodiment, the translucent protrusion 26 is shown as an example, but the present invention is not limited to this. For example, other transparent protrusions 26 may be used.

  (3) Although the translucent rear portion 29 and the front portion 30 are shown in the above embodiment, the present invention is not limited to this. For example, the transparent rear part 29 and the front part 30 may be used.

  (4) In the above-described embodiment, the rear portion 29 is provided with the substantially vertical vertical surface 32. However, the present invention is not limited to this. For example, the rear portion 29 may be provided with an inclined surface that faces obliquely upward in a side view of the body.

  (5) In the above embodiment, “one side in the longitudinal direction of the aircraft” is the rear side of the aircraft, and “the other side in the longitudinal direction of the aircraft” is the forward side of the aircraft. “One side in the longitudinal direction of the aircraft” and the rear side of the aircraft may be “the other side in the longitudinal direction of the aircraft”.

  (6) In the above embodiment, the rear portion 29 is shown as an example of the “one side portion”, and the front portion 30 is shown as an example of the “other side portion”. The “part” and the rear part 29 may be “the other part”.

  (7) In the above-described embodiment, the tank cover 14 that covers the upper side surface of the protruding portion 26 of the right side surface of the fuel tank 13 is shown as an example, but the present invention is not limited thereto. For example, another tank cover that is open without covering the upper side surface of the protruding portion 26 of the right side surface of the fuel tank 13 may be used.

  (8) In the above embodiment, the notch 27 is shown as an example of the “window”, but the present invention is not limited to this. For example, another “window” such as a hole formed in a midway portion in the vertical direction of the right side surface of the tank cover 14 may be used.

  (9) In the above embodiment, the steering handle 17 capable of changing the posture between the normal posture A1 and the reverse posture A2 is shown as an example, but the present invention is not limited to this. Other steering handles only in the normal posture A1 may be used. In this case, the entire protrusion 26 may be transparent or translucent, and only the front portion 30 of the protrusion 26 may be transparent or translucent.

  (10) In the above embodiment, the spring member 47 made of a compression spring is shown as an example, but the present invention is not limited to this. Another spring member made of a tension spring may be used.

  (11) In the above embodiment, the fuel tank 13 is placed and supported on the upper part of the machine body 10. However, the present invention is not limited to this. The arrangement of the fuel tank may be other than that shown in the above embodiment.

  (12) In the above embodiment, the engine 11 is shown as an example, but the present invention is not limited to this. An electric motor may be provided instead of the engine 11.

  (13) In the above-described embodiment, the traveling device 15 including a single-wheeled wheel is shown as an example, but the present invention is not limited to this. Another traveling device such as a two-wheeled wheel or a crawler traveling device may be used.

  (14) In the above embodiment, left and right expressions are used. However, the left and right structures may be opposite to the above embodiment.

  INDUSTRIAL APPLICABILITY The present invention can be used for various walking type work machines such as a walking type cultivator, a walking type combiner, and a walking type rice transplanter in addition to the above walking type management machine.

10: Airframe body 13: Fuel tank 14: Tank cover 17: Steering handle 26: Protruding portion 27: Notch (window)
29: Rear side part (one side part)
30: Front part (the other part)
33: Inclined surface 39: Grip part A1: Normal posture A2: Reverse posture

Claims (4)

A steering handle that is supported by the aircraft body and extends along the longitudinal direction of the aircraft,
A fuel tank placed and supported on the aircraft body;
A tank cover for covering the fuel tank,
A transparent or translucent protruding portion that protrudes laterally outward of the fuselage from the lateral side surface of the tank cover is provided on the lateral side surface of the fuel tank,
The steering handle can be changed in posture to a normal posture extending to one side in the longitudinal direction of the aircraft and a reverse posture extending to the other side in the longitudinal direction of the aircraft.
Of the protrusions, one side part in the longitudinal direction of the aircraft or the other side part in the longitudinal direction of the aircraft is configured to be transparent or translucent,
The steering handle is configured such that a grip portion is positioned higher than the fuel tank,
A walking type work machine in which the one side portion or the other side portion is provided with an inclined surface that faces obliquely upward in a side view of the body. The walking type work machine according to claim 1, wherein a window portion through which the protruding portion is passed is formed on a lateral side surface of the tank cover. The walking type work machine according to claim 1 or 2 , wherein the protruding portion is provided at a location near a lower end side of a lateral side surface of the fuel tank. The walking type working machine according to any one of claims 1 to 3 , wherein a side surface above the projecting portion of the lateral side surface of the fuel tank is covered with the tank cover.

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