JP2016013063A - Walking type working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a walking type working machine with a high degree of layout freedom, which is equipped with an operation tool for a stand excellent in operability.SOLUTION: A walking type working machine includes a pair of right and left handles 2 that is extended toward the upper rear side from a machine body, a stand 32 supported by the machine body that can change its posture between a use posture in which it is in contact with the ground and can cause the machine body to be self-supported, and a storage posture in which it is stored in a state that it cannot contact the ground, an operation tool 44 for a working part for operating a working part, and an operation tool 30 for a stand for changing the posture of the stand 32. The operation tool 44 for a working part is provided in a state that it is located in the inside of the machine body with respect to one handle of the pair of right and left handles 2, and the operation tool 30 for a stand is configured in a state that it is located in the outside of the machine body with respect to the one handle, and it does not protrude to the outside of the machine body beyond the outer edge part of the one handle.

Description

  The present invention relates to a walking type work machine including a stand on the front side of a machine body of a traveling machine body and a stand operation tool for switching the stand between a use posture and a storage posture.

  Conventionally, as a structure of an operation tool for a stand of such a walking work machine (in the literature, “one-wheel management machine”), there is a structure as described in Patent Document 1. In the walking type working machine described in Patent Document 1, a pair of left and right handles extending from the machine body (in the literature, “frame”) to the rear upper side and the machine body are supported, and the machine body can be grounded to stand on its own. Stands that can be changed between possible use postures ("grounded state" in the literature) and retracted stored postures ("non-grounded state" in the literature) ("main stand" and "side stand" in the literature) ), A working unit operating tool (not indicated in the literature) for operating the working unit, and a stand operating tool (“knob” in the literature) for changing the attitude of the stand.

  In the walking type working machine described in Patent Document 1, the working unit operating tool is provided inside the machine body of one handle on the left side of the pair of left and right handles. The stand operating tool is also provided on the inner side of the right handle of the pair of left and right handles. Then, the stand is changed in posture by operating the stand operation tool.

JP-A-9-285202

  As described above, in the walking type work machine described in Patent Document 1, the working unit operating tool and the stand operating tool are arranged in a narrow area between the pair of left and right handles. At the time of operation of the operation tool, there is a possibility that the operation is very tight and the operability is impaired. In addition, the layout of the stand operation tool was limited.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a walking type work machine having a stand operating tool with a high degree of freedom in layout and excellent operability.

The feature of the present invention is that
A pair of left and right handles extending rearward and upward from the aircraft,
A stand that is supported by the airframe and can change its posture between a use posture capable of grounding and allowing the airframe to stand on its own and a retracted posture stored so as not to ground.
A working unit operating tool for operating the working unit;
A stand operating tool for changing the position of the stand;
The operation tool for the working unit is provided in a state of being located on the inner side of the machine body with respect to one of the pair of left and right handles,
The stand operating tool is configured in a state of being positioned on the outer side of the machine body with respect to the one handle and in a state of not projecting outward of the machine body from an outer end portion of the one handle.

  If it is this invention, since the operation tool for stands is arrange | positioned in the wide area | region of the one body outside the body, the freedom degree of a layout improves and it is easy to operate, without being cramped at the time of operation.

  Furthermore, since the stand operation tool is provided in a state that does not protrude outward from the outer end of one handle, the stand operation tool does not become the outer end of the fuselage. At the time of storage in a barn or the like, the outer end of the handle comes into contact with a foreign object prior to the stand operating tool, so that the stand operating tool can be prevented from being damaged or inadvertently operated.

In the present invention,
The pair of left and right handles are provided in a state of separating from the left and right toward the rear side,
The stand is configured to be in the retracted position by pulling and operating the stand operating tool rearward along the one handle.
When the stand is in the retracted posture, it is preferable that the stand operation tool is configured not to protrude outward from the outer end portion of the one handle.

  According to the present invention, the stand operation tool is always positioned inside the machine body from the outer end portion of the handle, even if the stand is configured to be retracted by pulling the stand operation tool backward. Unexpected misoperation of the stand operating tool is further prevented.

In the present invention,
It is preferable that the stand operating tool is provided so as to overlap the pair of left and right handles in a side view.

  According to the present invention, since the stand operating tool is located at the same height as the pair of left and right handles and next to the handle, the stand operating tool can be used without moving the hand greatly after operating the aircraft while holding the handle. The operation tool can be operated efficiently.

It is a side view of the right side of the walk type work machine which is a concrete embodiment of the present invention. It is a top view of the walk type work machine which is a concrete embodiment of the present invention. It is a side view of the right side of the principal part which shows linkage with the stand operating tool at the time of stand use attitude | position, and a stand. It is a side view of the right side of the principal part which shows cooperation with the operation tool for stands and a stand at the time of a stand storing attitude | position. It is a top view of the principal part of a stand operation tool. It is a front view of the principal part of a stand.

  Hereinafter, a walking type working machine which is one of the specific embodiments of the present invention will be described with reference to the drawings.

[About overall configuration]
As shown in FIGS. 1 and 2, a walking work machine according to the present invention includes a body 1 and a pair of left and right steering handles 2 extending from the body 1 rearward and upward (the “handle” of the present invention). And a pair of left and right wheels 14 that support the airframe 1 are provided.

  The airframe 1 includes an engine 12, an airframe frame 10 on which the engine 12 is placed, and a transmission case 11 supported by the airframe frame 10 behind the engine 12.

  A drive shaft 13 protrudes from the lower end of the transmission case 11 in both the left and right directions in a state where the vehicle body faces sideways. A pair of left and right wheels 14 are provided at both left and right ends of the drive shaft 13. The drive shaft 13 may be provided with a rotary tiller.

  A fuel tank 17, an engine 12, and a cover 18 that covers the fuel tank 17 are provided at the upper end portion of the transmission case 11.

  The steering handle 2 extends from the upper end of the transmission case 11 toward the upper rear side of the machine body, and is divided into a U shape from the middle and is configured as a pair of left and right. A grip 20 is provided at the rear end of the steering handle 2. Intermediate portions of the left and right steering handles 2 are connected by a left and right reinforcing member 2a.

  A front hitch 15 is provided at the front of the body frame 10. The front hitch 15 is formed in a groove shape opened forward. Various work devices such as a rotary device can be attached to the front hitch 15.

  A rear hitch 16 is provided at the rear of the transmission case 11. The rear hitch 16 is formed in a groove shape opened rearward. Various work devices such as a rotary device can be attached to the rear hitch 16.

[About various operation tools]
As shown in FIGS. 1 and 2, a shift lever 40, an auxiliary main clutch lever 41, a main clutch lever 42, an engine switch 43, a PTO clutch lever 44, and a finger lever 45 are provided between the left and right steering handles 2. A handle height adjusting lever 46 is disposed.

  The main clutch lever 42, the engine switch 43, and the finger lever 45 are supported by the left steering handle 2. When the main clutch lever 42 is operated, power from the engine 12 to the drive shaft 13 is turned on and off. When the engine switch 43 is pushed, the engine 12 is stopped. The finger lever 45 is interlocked with the main clutch lever 42, and the main clutch lever 42 is operated by operating the finger lever 45 with the grip 20 being held.

  The transmission lever 40 is provided at the upper part of the transmission case 11 in a state where the transmission lever 40 extends rearward. When the shift lever 40 is operated, the traveling speed of the wheel 14 is changed.

  The auxiliary main clutch lever 41 is suspended over a pair of left and right steering handles 2 in a state of swinging around a lateral axis. When the auxiliary main clutch lever 41 is swung, the power from the engine 12 to the drive shaft 13 is turned on and off.

  The PTO clutch lever 44 and the handle height adjusting lever 46 are supported by the right steering handle 2. When the PTO clutch lever 44 is operated, power transmission to various working devices such as a rotary device mounted on the front hitch 15 or the rear hitch 16 is turned on and off. In the present embodiment, the PTO clutch lever 44 corresponds to the “operating part operation tool” of the present invention, and the rotary device operated by the PTO clutch lever 44 corresponds to the “working part” of the present invention. Further, by operating the handle height adjustment lever 46, the steering handle 2 can be set to an arbitrary adjustment swing angle position.

[About the stand]
As shown in FIGS. 1, 3, and 6, the stand 32 is provided at the front portion of the body frame 10 so as to be swingable around the axis X. The stand 32 has a use posture in which the airframe 1 is self-supported when a grounding portion 32d provided at the free end is grounded to the ground by the stand operation tool 30, and a retracted posture in which the stand 32 is swung up and stored during traveling. , The posture is changed. The stand 32 is always biased toward the use posture side by a coil spring 37.

  The stand 32 includes a round bar-shaped main body 32a, an insertion portion 32b, a grounding portion 32d, and a locking member 36.

  A cylindrical insertion portion 32b is inserted through one end of the main body 32a so as to intersect the main body 32a at a right angle. The other end of the main body 32a is provided with a grounding portion 32d that has a triangular shape in a side view and is formed in a groove shape in a front view. A locking member 36 that is bent twice at a right angle is provided near the middle of the main body 32a.

  The insertion portion 32b is inserted coaxially into an insertion hole (not shown) provided in the machine body frame 10 with the same position. As a result, the stand 32 is pivotally supported by the body frame 10 in a state in which the stand 32 can swing around the axis X.

  One end of a coil spring 37 is hooked on the locking member 36. The other end of the coil spring 37 is hooked on a locking portion 10 a provided on the front lower surface of the body frame 10.

  When the stand 32 swings forward, the use posture of the stand 32 is maintained by the contact of the outer periphery of the stand 32 with the outer periphery of the locking portion 10a and the urging force of the coil spring 37. ing.

[About the stand operation tool]
As shown in FIGS. 1 to 5, the stand operating tool 30 is supported by the right steering handle 2. The stand operating tool 30 is linked to a stand 32 via an operation wire 31. The right steering handle 2 on which the stand operating tool 30 is supported corresponds to “one handle” of the present invention.

  A first insertion bracket 34 is provided at an outer portion of the right steering handle 2 where the reinforcing member 2a is connected. Further, a locking bracket 33 is provided at a location closer to the grip 20 than a location where the first insertion bracket 34 is provided, of the outside location of the right steering handle 2. When the stand operation tool 30 is in contact with the first insertion bracket 34 (use position), the stand 32 is in a use posture, and the stand operation tool 30 is in contact with the locking bracket 33 (storage position). When the stand 32 is in the retracted position. The first insertion bracket 34 and the locking bracket 33 are arranged on the left side (inner side) in the left-right direction of the body with respect to the virtual straight line A1 that passes through the outer end portion of the grip 20.

  The stand operating tool 30 is positioned on the left side (inside) in the left-right direction of the aircraft with respect to the virtual straight line A1 outside the right steering handle 2 in a plan view, both in the use position and in the retracted position. It is configured. That is, the stand operating tool 30 is provided in a state of being positioned on the outer side of the aircraft with respect to the right steering handle 2 and in a state of not projecting outward from the outer end portion of the right steering handle 2. Therefore, the stand operating tool 30 does not become the outermost end portion in the walking work machine. As a result, the grip 20 or the like comes into contact with a foreign object prior to the stand operation tool 30 during traveling work or storage in a barn or the like, so that the stand operation tool 30 can be prevented from being damaged or inadvertently operated.

  Further, the stand operating tool 30 is arranged in a region on the right side (outside) in the left-right direction of the machine body relative to the virtual straight line A2 that passes through the right outer end of the wheel 14. For this reason, the stand operating tool 30 is not too close to the center of the machine body, and the operator of the walking work machine does not need to twist the body greatly when operating the stand operating tool 30 and is easy to operate. .

  Furthermore, the stand operating tool 30 is disposed along the steering handle 2 in a side view. In this way, the stand operating tool 30 is arranged at the same height as the steering handle 2, and therefore, when the steering handle 2 is gripped, the stand operating tool 30 can be moved without greatly moving the hand. It can be operated efficiently.

  The operation wire 31 includes an outer wire 31a and an inner wire 31b. One end portion of the outer wire 31 a is fixed to the first insertion bracket 34. Further, the other end portion of the outer wire 31 a is fixed to a second insertion bracket 35 provided in the body frame 10. Furthermore, one end of the inner wire 31 b is connected to the stand operating tool 30, and the other end is connected to the above-described locking member 36 provided in the stand 32.

[About the operation of the stand]
As shown in FIGS. 3 and 4, when the stand 32 is changed from the use posture to the retracted posture, the stand operating tool 30 is moved from the first insertion bracket 34 (use position) while resisting the urging force of the coil spring 37. Pull backwards. As a result, the inner wire 31b is pulled out rearward, and the stand 32 swings rearward and upward around the X axis. When the stand operating tool 30 is pulled to the locking bracket 33 (storage position), the stand 32 is in the storage posture. When the stand operating tool 30 is locked to the locking bracket 33, the stand 32 is maintained in the retracted posture.

  The operation of locking the stand operating tool 30 to the locking bracket 33 will be described in detail. The locking bracket 33 is formed with an L-shaped groove (notch 33a). The notch 33a has a width equal to the outer diameter of the outer wire 31a and a groove that opens upward (hereinafter referred to as a “vertical groove”), a width larger than the vertical groove, and a vertical length. It is comprised from the groove | channel (henceforth a "horizontal groove") from the lower edge part of a groove | channel to an airframe inner side direction. The stand operating tool 30 is pulled, and the inner wire 31b is inserted into the vertical groove of the notch 33a and then moved to the horizontal groove. In this state, the hand is released from the stand operating tool 30. Then, with the stand operating tool 30 biased forward by the biasing force of the coil spring 37, the front end surface of the stand operating tool 30 contacts the rear surface of the locking bracket 33, so that the stand 32 is retracted. Maintained.

  Even when the stand operating tool 30 is subject to unexpected contact with foreign matter or vibration due to traveling work, the stand has only an opening above the vertical groove. The operation tool 30 is unlikely to come out of the locking bracket 33.

  When the stand 32 is changed from the retracted position to the used position, the stand operating tool 30 is unlocked from the locking bracket 33 and pushed out according to the urging force of the coil spring 37. Thereby, the inner wire 31b is extended to the stand side by the biasing force of the coil spring 37, and the stand 32 swings around the X axis and is changed to the use posture. Finally, as described above, the stand 32 is urged forward by the urging force of the coil spring 37, and the outer periphery of the stand 32 comes into contact with the outer periphery of the locking portion 10a. 32 is maintained in a use posture.

[Another embodiment]
(1) The stand operating tool 30 may be provided on the left steering handle 2. In this case, the left steering handle 2 corresponds to “one handle” of the present invention, and the main clutch lever 42 and the finger lever 45 correspond to “operating part operation tool” of the present invention.

(2) The stand 32 is changed to the use posture by pushing the stand operation tool 30 and may be changed to the use posture by pulling the stand operation tool 30.

(3) The stand 32 only needs to make the airframe 1 self-supporting when in a use posture, and the shape of the stand 32 may be two forks, and the shape of the stand 32 is not limited to the above ten shapes. Further, the operation at the time of changing the posture of the stand 32 may be not only swinging in the longitudinal direction of the body, but also swinging in the lateral direction of the body, expansion and contraction of the stand itself, and the like.

(4) The link between the stand operating tool 30 and the stand 32 may be an operation link using a rod, an arm or the like, instead of a wire. The operation method of the stand operating tool 30 is not limited to the above-described embodiment, and may be a lever type or the like.

(5) The locking portion of the stand operating tool 30 is not limited to being provided on the steering handle 2, but a bracket is extended rearward from the body 1, and the locking bracket 33 and the first insertion are inserted into the bracket. A bracket 34 may be provided.

(6) The steering handle 2 only has to extend from the upper end of the transmission case 11 toward the upper rear side of the aircraft, and the shape of the steering handle 2 does not have to be in a straight line when viewed from the side. You may comprise by the shape which has bending | flexion, such as a bending and a curve.

  The present invention is not limited to the walking-type work machine of the above-described embodiment, but is supported by the pair of left and right handles extended from the machine body and the rear upper part, and can be grounded to stand by itself. Various walks equipped with a stand that can be changed between a use posture and a retracted posture stored so that it cannot be grounded, a working unit operating tool for operating the working unit, and a stand operating tool for changing the stand posture It is also applicable to mold work machines.

1 Aircraft 2 Steering handle (handle)
30 Stand operation tool 32 Stand 44 PTO clutch lever (operation part operation tool)

Claims (3)

A pair of left and right handles extending rearward and upward from the aircraft,
A stand that is supported by the airframe and can change its posture between a use posture capable of grounding and allowing the airframe to stand on its own and a retracted posture stored so as not to ground.
A working unit operating tool for operating the working unit;
A stand operation tool for changing the position of the stand,
The operation tool for the working unit is provided in a state of being located on the inner side of the machine body with respect to one of the pair of left and right handles,
The stand operating tool is a stand for a walk-type work machine provided in a state of being positioned on the outer side of the one handle relative to the one handle and not protruding outward from the outer end of the one handle. Operating device. The pair of left and right handles are provided in a state of separating from the left and right toward the rear side,
The stand is configured to be in the retracted position by pulling and operating the stand operating tool rearward along the one handle.
2. The stand operating device for a walk-type work machine according to claim 1, wherein when the stand is in the retracted position, the operation tool for the stand does not protrude outward from the outer end of the one handle.   The stand operating device for a walk-type working machine according to claim 1 or 2, wherein the stand operating tool is provided so as to overlap the pair of left and right handles in a side view.

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