JP5492128B2 - Walking type work machine - Google Patents

Description

  The present invention relates to a walking type working machine including a prime mover that drives a working device, a steering handle that extends rearward of the prime mover, and a protector disposed in front of the prime mover.

  There exists patent document 1 shown below as prior art document information relevant to this kind of walking type working machine. In the walking type working machine described in Patent Document 1, for example, a tilling rotor that is rotationally driven by a prime mover is attached as a working device, and an operator walks while holding an operation handle in accordance with self-running by the tilling rotor. By doing so, it is possible to cultivate fields and the like with the tillage rotor.

  In addition, when this kind of walking type work machine is moved from the work site through a general road, especially a paved road, it is difficult to run by a cultivating rotor on the general road. A method of moving the work machine on a loading platform of a vehicle such as a light truck is adopted.

JP 2004-42790 A (0015 paragraph, FIG. 1)

  However, since the weight of a walking work machine often reaches 30 kg or more, it has never been easy to load and unload it on a light truck platform.

  Therefore, in view of the problems given by the above-described walking type work machine according to the prior art, an object of the present invention is a walking type work that can be loaded and unloaded relatively easily on a loading destination such as a light truck loading platform. Is to provide a machine.

The characteristic configuration of the walking work machine according to the present invention is as follows:
A walking type working machine comprising a prime mover that drives a working device, a steering handle that extends rearward of the prime mover, and a protector disposed in front of the prime mover,
A loading arm extending forward from the protector is detachably attached to the protector, and the tip of the loading arm can roll or slide on the floor of the loading destination of the walking work machine. Is provided.

  In the walking type working machine having the above-described characteristic configuration, when loading the walking type working machine, the operator first attaches the loading arm to the protector and then holds the steering handle with both hands, Place the action part at the tip on the edge of the floor of the loading destination, then lift the steering handle slightly high and bring the walking work machine closer to the loading point, the action part rolls on the floor. Alternatively, the walking work machine can be easily loaded while sliding.

  Another characteristic configuration of the present invention is that the action portion is constituted by a wheel that is rotatable around a horizontal axis.

  With this configuration, the wheels that make up the action part roll on the floor surface, so that it is possible to load a walking work machine more easily than when the action part is composed of a sled. It is possible to reduce the possibility that the floor surface of the loading destination is damaged by friction with the action portion.

  Another characteristic configuration of the present invention is that the loading arm is configured to be attachable downward to a resistance rod extending rearward so that the wheel is an auxiliary wheel for movement.

  With this configuration, if you want to move the walking work machine on a general road, attach the loading arm downward to the resistance bar and touch the ground if the operator pushes down the steering handle with both hands. The wheel of the loading arm serves as a fulcrum, and a working device such as a tillage rotor can be lifted from the ground. Then, by pushing forward with the steering handle in that state, the walking type work machine can be moved relatively easily on a general road or the like.

According to another characteristic configuration of the present invention, the protector is extended upward from the lower end of the prime mover toward the front and from the front end of the base end through a bent portion. With a front extension,
The loading arm extends from the vicinity of the upper end of the front extension portion toward the front upper side in a side view.

  With this configuration, when loading the walking work machine, place the action part at the tip of the loading arm on the edge of the floor of the loading destination, and then lift the steering handle slightly higher while walking. When the work implement is brought close to the loading destination, the forward extending portion of the protector serves as a guide means that slides along the side wall of the loading destination or the edge of the floor surface, and the walking type work implement can be easily loaded.

  If the floor of the loading destination is sufficiently lower than the loading platform of a normal light truck, the loading arm is not attached to the protector, and the protector's base end, bent portion, forward extension, etc. By using guide means that can slide with respect to the side wall or the edge of the floor surface, the walking work machine may be easily loaded.

1 is an overall side view of a walking work machine according to the present invention. It is explanatory drawing which shows the attachment process of the arm for loading. It is explanatory drawing which shows the state after completion of attachment of the arm for loading. It is a perspective view which shows a protector and the arm for loading. It is the 1st explanatory view showing the loading process of a walk type work machine. It is the 2nd explanatory view showing the loading process of a walk type work machine. It is the 3rd explanatory view showing the loading process of a walk type work machine. It is the 4th explanatory view showing the loading process of a walk type work machine. It is explanatory drawing which shows the state after completion of loading of a walk type work machine. It is explanatory drawing which shows another usage pattern of the arm for loading. It is explanatory drawing which shows the soil cultivator attached to the walk type work machine.

EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated, referring drawings.
Note that “front”, “rear”, “left”, “right”, “upper”, and “lower” follow the directions as viewed from the operator who has the left and right steering handles of the walking work machine. The drawings are to be viewed in the direction of the reference numerals.

(Schematic configuration of walking type work machine)
As illustrated in FIG. 1, a walking type working machine according to the present invention includes an engine 1 as a prime mover that drives a working device such as a tilling rotor 4, and a steering arm 2 that extends rearward of the engine 1. And a protector 3 disposed in front of the engine 1.

  The greatest feature of the walking type working machine according to the present invention is that a loading arm 5 extending forward from the protector 3 is detachably attached to the protector 3 as illustrated in FIG. The action part 6 which can roll or slide on the floor surface of the loading destination of the walking type work machine is provided at the tip of 5.

The walking type work machine includes an engine cover 7 that houses the engine 1, and a transmission case 8 that extends the power of the engine 1 to a working device such as a tillage rotor 4 extends from the engine 1 downward. Between the cover 7 and the transmission case 8, an earth and sand scattering prevention cover 14 having a curved cross-sectional shape is attached. An air cleaner 1 </ b> C is provided on one side of the engine cover 7.
A working device such as a tillage rotor 4 is attached to an axle 9 extending from the vicinity of the lower end of the transmission case 8 to the left and right.

The operator walks while holding a pair of steering handles 2 </ b> A extending left and right from the tip of the steering arm 2 in accordance with the self-running of the walking work machine by the tiller rotor 4 that is rotationally driven by the engine 1. By doing so, a field etc. can be cultivated by the tilling rotor 4.
From a part of the steering arm 2, a tubular bracket 2B is extended rearward and downward, and a resistance bar 11 can be attached to the bracket 2B.

  In the vicinity of the base end portion of the resistance rod 11, a plurality of locking holes 11H are arranged in parallel along the longitudinal direction at equal intervals. The resistance rod 11 is fixed to the bracket 2B by inserting the first locking pin P1 through the selected locking hole 11H and a through hole (not shown) formed in a part of the bracket 2B. Therefore, the substantial length of the resistance bar 11 extending downward from the walking work machine can be adjusted depending on which locking hole 11H the first locking pin P1 is inserted into.

  FIG. 1 illustrates a working posture of the walking type working machine, in which the loading arm 5 described above is housed in a form fixed to a part of the resistance bar 11. The loading arm 5 is formed by inserting a second locking pin P2 similar to the first locking pin P1 into the lateral through hole 16H of the loading arm 5 and the locking hole 11H of the resistance rod 11, thereby inserting the resistance rod 11 into the loading arm 5. It is fixed to.

  As shown in FIG. 4A, the protector 3 has a protector main body 12 formed by bending one tubular member. The protector body 12 includes a pair of left and right first tube portions 12a (an example of a base end portion) that extends forward from the vicinity of the front lower end of the engine cover 7, and a first curved portion 12b (from the front end of the first tube portion 12a). A pair of left and right second pipe parts 12c (an example of a forward extension part) extending generally upward through an example of a bent part, and from the upper end of the second pipe part 12c to the rear upper part through a second bending part 12d. And a pair of left and right third pipe portions 12e. The distal ends of the pair of left and right third tube portions 12e are connected by a single fourth tube portion 12f that extends sideways.

As shown in FIG. 1, a fuel tank 10 is integrally accommodated inside the front end of the engine cover 7, and the pair of left and right second pipe portions 12 c of the protector 3 are positioned forward of the fuel tank 10. Is arranged.
The protector 3 includes a bracket portion 13 fixed to the front surface of the second pipe portion 12c. The bracket portion 13 includes a rectangular plate-like base portion 13a that connects the pair of left and right second pipe portions 12c, and a support member 13b fixed to the base portion 13a. As shown in FIG. 4B, the support member 13b has a rod-like shape bent into a “he” shape, and a fixed portion 13c fixed to the rear surface of the base portion 13a by welding or the like, and the base portion 13a. And a support portion 13d extending from the upper end to the rear upper direction through the curved portion.

(Configuration of loading arm)
As shown in FIG. 4A, the loading arm 5 includes a fork-shaped arm main body 15 obtained by bending a long plate-like member into a “U” shape, and one arm main body 15. And a tubular supported portion 16 fixed to the portion. The arm main body 15 includes a relatively short base end portion 15a attached to the protector 3 in a generally horizontal posture, and a pair of arm portions 15b extending vertically from the left and right ends of the base end portion 15a. The tubular supported portion 16 is fixed to the lower surface of the base end portion 15a by welding or the like, and extends perpendicularly to a plane including each axis of the pair of arm portions 15b.
A pair of wheels 18 constituting the action portion 6 are supported in a freely rotatable manner near the ends of the pair of arm portions 15b. The wheel 18 is pivotally supported at both ends of a single shaft 17 that is inserted through a through hole in the vicinity of the ends of the pair of arm portions 15b.

  When the loading arm 5 is used to load the walking work machine on the loading platform 20A (an example of the floor surface) of the light truck 20 (an example of the loading destination), the second locking is started from the state shown in FIG. The pin P2 is pulled out, the loading arm 5 is removed from the resistance bar 11, and the tubular supported portion 16 is inserted into the support portion 13d of the protector 3 in the manner illustrated in FIG.

  Next, as shown in FIG. 3, the tubular supported portion 16 of the loading arm 5 is moved so that the positions of the lateral through hole 16H of the supported portion 16 and the lateral through hole 13H of the support portion 13d coincide with each other. The angle phase with respect to the support portion 13d of the protector 3 is adjusted, and the second locking pin P2 is inserted into these laterally through holes 16H and 13H. Then, the loading arm 5 is fixed in a posture that extends obliquely from the position slightly above the second curved portion 12d of the protector 3 toward the front upper side in a side view.

(Loading method)
As shown in FIG. 5, when loading the walking type work machine, the worker attaches the loading arm 5 to the protector 3 near the light truck 20 as an example of the loading destination, and attaches the left and right steering handles 2A. While holding it with both hands, the wheel 18 at the tip of the loading arm 5 is placed on the floor surface 20 </ b> A of the light truck 20.

  Next, as shown in FIG. 6, for example, when approaching the light truck 20 while lifting the steering arm 2 or the like slightly higher, at least half of the weight of the walking work machine is reduced on the floor 20 </ b> A. The walking work machine can be brought closer to the light truck 20 while being deposited on the floor surface 20 </ b> A via the wheels 18 that roll toward the driver's seat 20.

  When the protector 3 is placed on the floor surface 20A while the steering arm 2 and the like are further lifted higher, and the protector 3 is placed on the floor surface 20A, the wheels 18 of the loading arm 5 and the protector 3 are placed as shown in FIG. With the first curved portion 12b, almost the entire weight of the walking work machine can be deposited on the floor surface 20A.

  In some cases, after the state of FIG. 6, the second pipe portion 12 c (forward extending portion) or the second curved portion 12 d of the protector 3 is lightly applied to the side surface 20 B (an example of a side wall) of the loading platform of the light truck 20. By sliding it up while applying it, the side surface 20B of the loading platform may be used as an upward and downward guide means to shift to the state of FIG.

  After the state of FIG. 7 has been achieved, the walking work machine is pushed into the driver's seat side as shown in FIG. 8 while raising the tilling rotor 4 slightly higher than the floor surface 20A, and then the tilling rotor. As shown in FIG. 9, by rotating the walking work machine with reference 4 as a fulcrum, it is brought into a conveying state supported by the left and right tilling rotors 4 and the resistance rods 11, and a part of the steering arm 2. When the hook of the loading platform of the light truck 20 is bound with a rope (not shown) or the like, loading of the walking work machine is completed.

  When the loading floor 20A is sufficiently lower than the loading platform of a normal light truck 20, the loading arm 5 is not attached to the protector 3, and the first curved portion 12b of the protector 3 (an example of a bent portion). ) Or the first pipe portion 12a (an example of a base end portion) as a guide means that can slide on the floor surface 20A of the loading destination, the walking type work machine may be loaded relatively easily.

(Another moving method)
As a method of moving the walking type work machine on a general road or the like, instead of the tilling rotor 4, a large traveling wheel for movement is attached to the axle 9, and the left and right steering handles 2 </ b> A are held with both hands. However, it is possible to use the loading arm 5 as a simpler method.

  That is, in the example shown in FIG. 10, the first locking pin P <b> 1 is removed from the state of FIG. 1, and the resistance bar 11 with the loading arm 5 attached is once extracted from the bracket 2 </ b> B of the steering arm 2. After changing the direction of the resistance bar 11 so that the loading arm 5 extends downward from the rear end of the resistance bar 11, the original grounding side of the resistance bar 11 is inserted into the bracket 2B, and the grounding side The first locking pin P1 is inserted into the locking hole 11H and fixed.

  As another fixing method, from the state shown in FIG. 1, without removing the resistance bar 11 from the bracket 2B, the second locking pin P2 is removed and the loading arm 5 is once removed from the resistance bar 11, and the loading arm 5 is removed. It is also possible to insert the second locking pin P2 into the locking hole 11H on the side to be grounded, and to fix it by inserting from the rear end side of the resistance bar 11 after changing the vertical posture.

  If it is desired to move the walking type work machine, if the operator pushes down the steering handle 2A with both hands, the wheel 18 of the loading arm 5 in contact with the ground serves as a fulcrum, and the tilling rotor 4 and the like Can be lifted from the ground. Therefore, by pushing forward with the steering handle 2A in this state, the walking type work machine can be moved to the vicinity of the light truck 20 as a loading destination relatively easily on a tunnel or a general road.

(Structure of soil cultivation equipment)
As illustrated in FIG. 11, it is possible to attach the mashing apparatus 30 for erection in the vicinity of the rear end of the cultivating resistance bar 41 having a larger number of locking holes 41 </ b> H than the aforementioned resistance bar 11. 11A shows a rear view of the soil culturing device 30 attached to the resistance bar 41, FIG. 11B shows a plan view of the soil culturing device 30 attached to the resistance rod 41, and FIG. The main part of the walk type working machine which attached the cultivating apparatus 30 to the resistance rod 41 is shown.
A soil culturing apparatus 30 shown in FIG. 11 includes a rubber elastic soil slab 31 having elasticity and flexibility, and a steel plate stay member 32 for holding a part of the surface formed by the elastic soil slab 31 in a predetermined shape. And have.
The stay member 32 includes a first horizontal stay portion 32A that extends to the left and right, a vertical stay portion 32B that extends downward from the left and right center of the horizontal stay portion 32A, and a left and right extension from the lower end of the vertical stay portion 32B. And a short second lateral stay 32C that is extended.

The elastic earth plate 31 and the stay member 32 are coupled by a plurality of bolts 33 that are inserted through through holes formed in the first lateral stay portion 32A and the second lateral stay portion 32C.
From the vicinity of the upper end and the lower end of the vertical stay portion 32B, a first bracket 34 and a second bracket 35 for attaching to the resistance rod 41 are erected so as to protrude rearward.
The first bracket 34 in the vicinity of the upper end of the vertical stay portion 32B is only about twice as high as the resistance rod 11, and only one set of locking holes 34H is formed.

On the other hand, the second bracket 35 in the vicinity of the lower end of the vertical stay portion 32B extends in an arc shape centered on the locking hole 34H of the first bracket 34, and is longer than three times the height of the first bracket 34. A number of locking holes 35H are connected at equal intervals along the longitudinal direction.
The third locking pin P3 is inserted into the locking hole 34H of the first bracket 34 and the corresponding locking hole 41H of the resistance bar 41, and the appropriate locking hole 35H of the second bracket 35 and the corresponding resistance bar 41 correspond. By attaching the fourth locking pin P4 to the locking hole 41H, the attachment of the soil culturing device 30 is completed. At this time, the angle with respect to the resistance bar 41 of the elastic earth plate 31 in the side view can be adjusted by selecting which locking hole 35H of the second bracket 35 is inserted and passing through the fourth locking pin P4.
Since the resistance rod 41 is provided with a number of locking holes 41H, the height of the soil cultivating device 30 is changed depending on whether the third locking pin P3 and the fourth locking pin P4 are inserted into the locking holes 41H. can do.

[Another embodiment]
<1> The arm body 15 of the loading arm 5 is not limited to the form in which the arm body 15 extends obliquely toward the front upper side, but the form in which the arm body 15 extends forward, the arm body 15 extends in the vertical direction. It is also possible to carry out in the form in which the wheel 18 is directly attached to the second pipe part 12c (forward extension part) of the protector 3 without using the arm main body 15.

<2> The action unit 6 is configured not by the wheels 18 but by rollers that can rotate around the horizontal axis, and by a sledge that can be slid on the floor of the loading destination with relatively little friction. Also good.

<3> Instead of providing the pair of left and right wheels 18 as the action unit 6, the working unit 6 may be implemented with a single wheel 18. The same applies to the case of employing a roller or a ridge. In the case of a scissors, a flat or rod-shaped scissors can be implemented on the floor surface so as to be able to be grounded with respect to the tip of the arm body 15.

<4> An electric motor driven by electric power from a battery or the like instead of the engine may be used as the prime mover.

  It can be used as a technique for providing a means for assisting the loading operation such as the loading platform of a light truck with respect to the walking working machine including a walking tiller and a management machine.

1 engine (motor)
2 Steering arm 2A Steering handle 2B Bracket 3 Protector 4 Tillage rotor (working device)
5 Loading Arm 6 Action Part 11 Resistance Bar 11H Locking Hole 12 Protector Body 12a First Pipe Part (Base End)
12b 1st bending part (bending part)
12c 2nd pipe part (front extension part)
13 Bracket part 16 Supported part 18 Wheel (action part)
20 Light truck (loading destination)
20A cargo bed (floor surface)
P1 First locking pin P2 Second locking pin

Claims (4)

A walking type working machine comprising a prime mover that drives a working device, a steering handle that extends rearward of the prime mover, and a protector disposed in front of the prime mover,
A loading arm extending forward from the protector is detachably attached to the protector, and the tip of the loading arm can roll or slide on the floor of the loading destination of the walking work machine. A walk-type work machine with a section.   The walking type work machine according to claim 1, wherein the action portion is constituted by a wheel that is rotatable around a horizontal axis.   The walking type working machine according to claim 2, wherein the loading arm is configured to be attachable downward to a resistance rod extending rearward so that the wheel is an auxiliary wheel for movement. The protector includes a base end portion that extends forward from near the lower portion of the prime mover, and a front extension portion that extends upward from the front end of the base end portion via a bent portion,
The walking work machine according to any one of claims 1 to 3, wherein the loading arm is extended from the vicinity of the upper end of the front extension portion toward the front upper side in a side view.

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