JPH0739206A - Electric work vehicle for simple work with a low floor mount - Google Patents

Abstract

(57) [Summary] [Purpose] The low-floor mount is set as low as possible without impairing the driving force. [Configuration] A small-diameter front wheel 5 is arranged below the front part of the low-floor pedestal 2, and a rear wheel 6 having a larger diameter than the front wheel is provided behind the low-floor pedestal 2.
And a fan portion 8 that is formed to extend from the low-floor pedestal so as to cover the upper surface of the rear wheel in a stepped manner, and a battery 9 that is located between the left and right rear wheels. Electric traveling vehicle for simple work with a floor mount.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple type electric vehicle for work, which is equipped with a low-floor mount and is used when carrying out work such as farm house, farm work in the field, luggage transfer in factories and warehouses. It is about.

[0002]

BACKGROUND OF THE INVENTION Generally,
When cultivating vegetables, fruit trees, or vegetation, these are often cultivated in furrows, and in such cases, various agricultural work such as budless work and harvest work, and baggage transportation in factories and warehouses, Since the position is low, there is a thing in which the worker must move sequentially while working in a state in which the worker is forced to have a middle waist or a bending posture. Then, at the time of such work, it is configured so that it can be self-propelled by mounting a drive source such as an electric motor or battery on a low-floor mount, and an operator can board such a work to perform the above-mentioned work. Has been proposed for improving workability and working posture.

By the way, in the case of performing low-level work with a traveling vehicle equipped with such a low floor mount, it is desirable that the low floor mount be as low as possible and close to the traveling surface. In this case, it is suggested that the front and rear running wheels be placed below the low floor platform so that the running wheels do not hit the feet of the worker sitting on the low floor platform. Has to have a small diameter, and if this is a driving wheel, there is a problem that the driving force will be reduced and mobility will be impaired, so that the height of the low floor mount can not be made too low. There was a problem.

[0004]

DISCLOSURE OF THE INVENTION The present invention was devised with the object of providing a simple type electric vehicle for work equipped with a low floor pedestal capable of eliminating these drawbacks in view of the above circumstances. In a simple type electric vehicle for work equipped with a low floor mount close to the running surface, small front left and right wheels are arranged below the front part of the low floor mount, and at the rear of the low floor mount. The left and right rear wheels are formed to have a diameter larger than that of the front wheels, and a folder portion is formed to extend rearward from the low-floor pedestal so as to cover the upper surface of the rear wheels. Is arranged, and the fuser portion is also used as a footrest step.

According to the present invention, according to the present invention, the low floor mount can be set to a position as low as possible without impairing the driving force in the low floor mount.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the present invention will be described with reference to the drawings. In the drawing, reference numeral 1 denotes a traveling machine body of an electric working vehicle for work, and a pedestal (floor) 2 of the traveling machine body 1 is a low floor pedestal whose upper surface is substantially flat and is close to a traveling road surface. A control box 3 is integrally fixed to the lower surface of the abdomen on the front side, and an electric motor (geared motor) 4 having a reduction mechanism is fixed to the rear side. Reference numeral 5 denotes a pair of left and right front wheels having a small diameter, and the front wheel 5 is located in front of the control box 3 and disposed below a pair of left and right front corners of the gantry 2.

On the other hand, 6 is a pair of left and right rear wheels having a diameter larger than that of the front wheel 5. The rear wheel 6 is arranged rearward of the rear end portion of the pedestal 2, but the rear wheel 6 is , Is connected to the electric motor 4 via a chain type power transmission mechanism 7 interposed between the axle 6a and the electric motor 4, and the rear wheel 6 is driven by the forward and reverse drive of the electric motor 4. It can rotate and run, and the rear wheels 6 are drive wheels. Further, 8 is a left and right fan part that covers the rear wheel 6, and the fan part 8 is formed so as to extend rearward from the rear end part of the gantry 2 in a state of becoming higher in a stepped manner. However, its upper surface 8a is formed in a substantially flat shape.

Between the left and right fan parts 8, a battery 9 is arranged substantially above the rear wheel axle 6a. Further, 10 is a rear seat (seat portion) arranged above the battery 9, and the rear seat 10 is
Support shaft 10a protruding downward from the front end thereof
Is rotatably and vertically movably inserted into a boss cylinder portion 11 provided at a substantially central portion in the front left and right direction of the left and right fan portion 8, so that it can be detachably attached at any position. There is. When a worker sits on the rear seat 10 or when working at a high place, he / she can put his / her foot on the wing portion 8 to work, and thus the wing portion 8 is also used as a foot mounting step. It's ready.
Incidentally, in the above-mentioned embodiment, the rear seat 10 has the support shaft 10
Although it is supported by a, without being limited to this, as shown in FIG. 18, four columns 22 are erected on both side edges of the battery 9, and the columns 22 are formed in a substantially rectangular box shape. The four corners of the seat 23 may be attached. In this case, the sheet 23 is changed to the one shown in FIG.
As shown in (C), the bottom surface portion 23a is oriented upward,
If the bottom surface portion 23a is detachably attached to the column 22 in any posture in which the bottom surface portion 23a faces downward, the bottom surface portion 23a
When the worker is in a posture of facing upward, the worker can sit on the seat 23 to perform the work.
There is an advantage that it is possible to prevent the operator's foot from hitting the battery 9 by the side portion 23b of the box-shaped sheet 23 covering the battery 9. on the other hand,
When the bottom surface portion 23a is oriented downward, the sheet 23 can be used as a storage box for crops and the like.

On the other hand, reference numeral 12 denotes a front seat installed on the gantry 2, and a shaft 12a projecting from the central portion of the bottom surface of the front seat 12 has a large diameter at the upper end side and a smaller diameter in a stepwise manner toward the lower end side. However, in the embodiment, the shaft 12a has a diameter dimension d ₁ , d ₂ , d ₃ from the upper side.
Are formed in a three-tiered shape in which they are successively smaller (d ₁ > d ₂ > d ₃ ). On the other hand, the mount 2 is provided with three mounting holes 2a having different diameters. The diameters D ₁ , D ₂ and D ₃ of these mounting holes 2a are the diameters d _{1 of} the shaft 12a, respectively.
The diameters of the shaft 12a can be freely inserted into and removed from the mounting holes 2a having the corresponding diameters, although the diameters of the shafts 12a are gradually smaller (D ₁ > D ₂ > D ₃ ) corresponding to d ₂ and d _3. The shaft diameters are set larger than the shaft diameters d ₁ , d ₂ and d ₃ . Then, when the shaft 12a is inserted into the arbitrary mounting hole 2a, the shaft 12a is inserted into the mounting hole 2a up to a portion having a diameter corresponding to the diameter of the mounting hole 2a. The height of the front seat 12 can be adjusted by an extremely simple operation of simply inserting it into the attachment hole 2a. By the way,
The height position of the front seat is set by each d of the shaft 12a.
The lengths L ₁ , L ₂ and L ₃ of the ₁ , d ₂ and d ₃ portions can be variously changed by setting the lengths to arbitrary lengths. Further, in the above-described embodiment, the shaft 12a has a three-step shape so that the height of the front seat 12 can be adjusted in three steps. However, it is of course possible to use a two-step or four-step or more multi-step. Further, as a means for adjusting the height of the front seat 12, as shown in FIG. 20, the shaft 12a has a two-step shape with a large diameter d ₄ on the upper side and a small diameter d ₅ on the lower side, while the mounting hole 2a is formed. The diameter D ₄ on the hole inlet side corresponds to the large shaft diameter d ₄ and the diameter D ₅ on the inner hole side is the small shaft diameter d _5.
It has a two-tiered hole corresponding to the part, and the frame 2 has a large diameter D
Mounting holes with different hole depths L (including L = 0) in ₄ parts 2
If a plurality of a are provided, when the shaft 12a is inserted into an arbitrary mounting hole 2a, the shaft 12a has a shaft large diameter d ₄ part up to the hole depth L of the large diameter D ₄ part of the mounting hole 2a. Will be inserted (when it is inserted into the mounting hole 2a with L = 0, only the portion with the smaller shaft diameter d ₅ will be inserted into the mounting hole 2a). You will be able to adjust the height.
Further, as shown in FIG. 21, the mounting hole 2a is a bottomed hole, and a cylindrical adapter 13 having a bottom surface 13a formed at a position deviated to the upper or lower side from the central portion in the vertical direction is formed in the mounting hole 2a. It is also possible to adjust the height of the front seat 12 by fitting it upward or downward and inserting the shaft 12a until it abuts the bottom surface 13a of the adapter 13. In this case, if a plurality of adapters 13 having different bottom surface 13a positions are prepared, the seat height can be adjusted in any number of steps, but the upper end of the adapter 13 is slightly smaller than the mounting hole 2a. If the dimensions are set so as to project to the front, the adapter 13 can be easily attached and detached. Further, in each of the above-described embodiments, the front seat 12 may be an obstacle when a worker stands on the gantry 2 to perform the work. In such a case, the shaft 12a is attached to the mounting hole 2a. It is sufficient to remove the front seat 12 by removing it from the front.

Further, on both left and right sides of the gantry 2, side steps 14 are provided between the front wheel 5 and the rear wheel 6 so as to project outward in the left-right direction, and a worker can seat the front seat. It is designed so that you can rest your legs when you are sitting in a low position and working in a low place. This side step 14
Has a leg-like shape in a side view in which leg portions 14b are erected from both front and rear ends of the bottom surface portion 14a, and both upper end portions of the front and rear leg portions 14b are attached to and supported by the gantry 2 for strength. It is superior to both front and rear legs 14b
Therefore, the foot hung on the side step 14 has wheels 5, 6
It is designed so that you can avoid accidentally hitting.

Further, the left and right front wheels 5 are provided on the front side of the gantry 2.
A front step 15 is provided between them. The front step 15 has a pair of left and right leg portions 15b of a substantially rod-shaped support rod 15a, a middle portion of left and right frame portions 15d of a substantially rectangular frame 15c, and a left and right leg portions 15b. On the other hand, the left and right frame portions 15d are integrally fastened to each other so as to be substantially vertical, and the left and right leg portions 15b are fastened to the left and right frame portions 15d by fastening portions 1
5e is biased to the rear side with respect to the central portion in the front-rear direction of the left and right frame portions 15d in the state in which the step posture is described later. The front step 15 has a support rod 15a.
Is attached to the pedestal 2 by rotatably passing through a boss cylinder portion 16 attached to the front end of the pedestal 2, whereby the front step 15 is attached to the support rod 1
With the pierced portion of the boss cylinder 16 of 5a as a fulcrum, it is possible to swing up and down from a step posture in which the tips of the supporting rods and legs 15b face substantially directly below to a handle posture in which the tips of both legs 15b face almost directly above. However, when the legs 15b come into contact with the front end of the gantry 2 when the handle is in the holding posture, further swinging is restricted. When the front step 15 is in the step posture, the operator sitting on the pedestal 2 supports the flat foot 15f supported between the left and right frame portions 15d on the front side of the fastening portion 15e.
When the handle is in the grip position, it is a part of the front side of the fastening part 15e (a part of the step position that is behind the fastening part 15e). Can be used as a handle when the front side of the traveling machine body 1 is lifted and turned. However, in this handle posture, the fastening portions 15e are located in the front-rear center of the left and right frame portions 15d. Since it is located on the front side of the part, it is considered that the center of gravity can be lifted to the rear side of the front step 15 in a previously stable state. Incidentally, in the above-described embodiment, the front step 15 is configured to be swingable up and down so that the front step 15 can be easily transformed into the step posture and the handle posture. However, the present invention is not limited to this and, for example, the front step 15 can be used. Alternatively, it may be detachably attached to the gantry 2 in the step posture and the handle posture.

Further, a remote control switch (foot switch) 18 drawn from the control box 3 is provided on the footrest 15f of the front step 15, the upper surface of the bottom surface 14a of the side step 14 and the upper surface of the pedestal 2.
A holding means (a magnet, magic tape, sucker, etc.) for holding is attached by this, and when the foot is placed on any of the steps 14 and 15 or the pedestal 2 and the foot is remote-controlled, the remote control switch is held. Care is taken so that 18 can be prevented from being accidentally displaced or dropped.

On the other hand, the control box 3 travels only or continuously when the power switch 16 with the lamp 16a, the forward / reverse switching switch 17 with the stop position, and the remote control switch 18 are pushed. Run changeover switch 1
9, speed adjustment dial 20, battery level warning lamp 2
1 is provided.

Further, a hitch 2 is provided at the rear end of the traveling body 1.
4, a hitch 24 is connected to the hitch 24 via a connecting metal fitting 25 as an option, and two connecting metal fittings 25 are provided at both front and rear ends thereof, for a total of four. The connecting pins 25a are provided so as to project in a line in the front-rear direction. On the other hand, the connecting pin 25a is attached to the hitch 24a of the traveling body and the hitch 26a of the carriage 26.
Two connecting holes 24a and 26b corresponding to are formed respectively. When all the four connecting pins 25a are inserted into the connecting holes 24a and 26b, the traveling machine body 1 and the carriage 26 are connected in a fixed state, and the traveling machine body 1 moves backward ( In the case where the front and rear connecting pins 25a are inserted into the connecting holes 24a and 26b, respectively, the traveling machine body 1 and the bogie 26 swing sideways. The connection in the permitted state is convenient when the traveling machine body 1 moves forward. Further, in this case, as shown in FIG. 16 (B), when the carriage 26 swings to the left and right with respect to the traveling machine body 1 by a predetermined angle α, the one connecting pin 25a not inserted is the end of the hitches 24, 26a. If the dimensions are set so as to contact the edge portion, the unnecessary lateral swing of the carriage 26 is restricted. Incidentally, when it is desired to allow a certain degree of swing in a fixed state in which all the four connecting pins 25a are inserted into the connecting holes 24a, 26a, as shown in FIG. One of the holes 24a and 26b may be elongated holes 24b and 26c that are long in the left-right direction. It is needless to say that a hitch may be provided at the front end of the traveling machine body 1 so that the carriage can be connected to the front of the machine body.

In the embodiment of the present invention configured as described above, when performing work at a low place, the operator sits on the front seat 12 provided on the low-floor pedestal 2 in a state where the worker sits down, Although it is possible to perform the work without any unreasonable work posture while moving, in this case, of the front and rear running wheels 5 and 6, only the small-diameter front wheel 5 is located below the low floor mount 2. The rear wheel 6 having a diameter larger than that of the front wheel 5 is covered by a folder portion 8 extending rearward from the rear end of the low floor pedestal 2 in a stepped shape. Will be there. As a result, an operator sitting on the low floor pedestal 2 can work without accidentally hitting the front and rear wheels 5 and 6, and the rear wheel 6 that is a driving wheel.
Has a larger diameter than the front wheels 5 in order to secure the necessary driving force, but the height position of the low-floor mount 2 can be lowered as much as possible. It is possible to remarkably improve the workability when performing low-level work near the ground surface such as. In addition, the front surface of the fan portion 8 is flat, and when the operator sits on the rear seat 10 or when working at a high place, he / she can place his / her feet on the back seat 10 and a separate foot mounting step is required. Since it is not necessary to provide it, the member can be used in common, and it can contribute to downsizing.

Further, since the front seat 12 provided on the low-floor mount 2 is provided so that its height is adjustable and detachable, it can be used for various work postures such as work at a low place and work at a high place. In addition, the low floor mount 2 is provided with a front step 15 and a side step 14, and when the worker sits on the low floor mount 2 in either a forward or sideways posture, Step 15 or 14
You will be able to rest your feet on the floor, and you will be able to work in a comfortable posture without any trouble in the place where your feet are placed. Moreover, since these steps 15 and 14 are arranged between the left and right front wheels 5 and between the front and rear wheels 5 and 6, a large foot-holding area can be secured and the steps 15, 14
Does not significantly protrude from the traveling machine body 1 to the front and left and right sides, which contributes to downsizing. In addition, the front step 15 can be transformed into a step position in which a foot is put on and a handle position in which the front part of the machine body is lifted and swiveled so that the front step 15 can be used as a member. However, even though it is also used as a handle in this way, it is simply a low floor mount 2
Unlike the one provided with a step and a handle that project vertically, the front step 15 does not project above the low-floor pedestal 2 when in the step posture, so that the front step 15 interferes with the operator sitting on the low-floor pedestal 2. There is no end in time.

Moreover, in this structure, the battery 9 is disposed on the rear wheel axle 6a between the left and right fan parts 8,
Battery loads act directly on the drive wheels, which increases maneuverability. Further, as described above, when the traveling machine body 1 is turned with the front step 15 being in the handle posture and the front part of the machine body being lifted and only the rear wheel 6 being in contact with the ground, the battery 9 having a large load causes the rear wheel axle 6a to move.
Because it is on top, it can be done lightly and easily. Moreover, the rear seat 10 is arranged above the battery 9, and the protection of the battery 9 can be effectively measured by the rear seat 10.
The support shaft 10a is rotatably and vertically movable into the boss cylinder 11 so that the support shaft 10a can be detachably fixed at an arbitrary position. 9 is exposed, which has the advantage that the battery 9 can be easily inspected.

[0018]

In summary, since the present invention is constructed as described above, by mounting it on a low floor mount,
It is possible to perform work at a low place while moving, but in this case, of the front and rear running wheels, only the small front wheel is arranged below the low floor platform, while the front wheel is larger than the front wheel. The rear wheel is covered by a folder portion extending rearward from the rear end of the low-floor pedestal in a state of being elevated in a stepped manner. As a result, a worker sitting on a low floor pedestal can work without accidentally hitting the front and rear wheels, and the rear wheels have a larger diameter than the front wheels to ensure the necessary driving force. However, it is possible to lower the height position of the low floor pedestal as much as possible, and there is no work posture when performing low work near the ground surface such as harvesting the lower part of tomatoes. Work can be performed without being constrained, and workability in low places can be significantly improved. In addition, since the worker can put his / her foot on the rear wheel to cover the rear wheel, it is not necessary to provide a separate foot-rest step, the member can be used in common, and the size can be reduced. . Also, in the case where the battery is arranged between the left and right rear wheels that are the drive wheels, the battery load directly acts on the drive wheels, which increases maneuverability,
When the traveling machine body is rotated with the front part of the machine body being lifted and only the rear wheels are in contact with the ground, a battery with a large load is located between the rear wheels, which can be carried out lightly and easily. Further, in the case where the seat portion is detachably provided on the upper side of this battery, an operator can easily work at a high position by getting on the seat portion, and the seat portion protects the battery. It has an advantage that it can be measured effectively and that the inspection of the battery can be done easily by removing the seat part. In addition, in the low floor pedestal with detachable height adjustable side seats, by lowering or raising the front seat, or removing it, work in low places, middle places, This makes it possible to cope with various work postures such as work in high places.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a work electric vehicle.

FIG. 2 is a schematic side view of a working electric vehicle.

FIG. 3 is an explanatory diagram showing a usage state of the electric traveling vehicle for work.

FIG. 4 is an explanatory view showing a usage state of the electric traveling vehicle for work.

FIG. 5 is an explanatory diagram showing a usage state of the electric traveling vehicle for work.

FIG. 6 is an explanatory diagram showing a usage state of the electric traveling vehicle for work.

FIG. 7 is a front view of a front seat.

8A, 8B, and 8C are explanatory views showing a mounted state of a front seat.

9A is a perspective view of a front step portion, FIG. 9B
FIG. 4 is a side view of a front step portion.

10A is an explanatory diagram showing a usage state of a front step in a step posture, and FIG. 10B is an explanatory diagram showing a usage state of a front step in a handle posture.

FIG. 11 is an explanatory diagram showing a mounting example of a remote control switch.

FIG. 12 is a side view of a control box.

FIG. 13 is a schematic plan view showing a state in which a carriage is connected to the traveling machine body.

FIG. 14 is an exploded perspective view of a carriage connecting portion.

FIG. 15 is a side view of the connecting portion when the carts are connected in a fixed state.

FIG. 16A is a side view of a connecting portion when a bogie is connected in a state where left and right swing are allowed, and FIG. 16B is a partial plan view thereof.

FIG. 17 is a plan view of a hitch portion showing another example.

FIG. 18 is an overall perspective view of an electric working vehicle for work to which a rear seat of another example is attached.

FIG. 19 (A) is a perspective view of a rear seat showing another example,
(B), (C) is sectional drawing which shows the attachment state.

FIG. 20 (A) is a front view of a front seat showing another example;
(B), (C) is explanatory drawing which shows the attachment state.

21 (A) and 21 (B) are explanatory views showing a mounted state of a front seat showing another example.

[Explanation of symbols]

 2 Low floor mount 5 Front wheel 6 Rear wheel 8 Fender section 9 Battery 10 Rear seat 12 Front seat 14 Side step 15 Front step

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Hitoshi Yonemura, 667 Izamo-cho, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Mitsubishi Agricultural Machinery Co., Ltd. (72) Kenji Ito 667, Ojiya-cho, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture Address 1 Within Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor Yoshihisa Yurino 667 Izumo-cho, Higashi Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Address inside Mitsubishi Agricultural Machinery Co., Ltd. (72) Tomoaki Takeuchi 447-1 Fukuda, Fukusaki-cho, Kanzaki-gun, Hyogo Prefecture Shindenki Co., Ltd. (72) Inventor Yoshio Okada 447-1 Fukuda, Fukusaki-cho, Kanzaki-gun, Hyogo Prefecture Fukushinden Co., Ltd. (72) Noboru Muramatsu 447-1 Fukuda, Fukusaki-cho, Kanzaki-gun, Hyogo Prefecture Machine Co., Ltd. (72) Inventor Hideo Kono 7 Iseki Kawasaki Service Sales Co., Ltd., 14 Wasaka, Akashi City, Hyogo Prefecture

Claims (3)

[Claims] 1. An electric traveling vehicle for simple work, comprising a low-floor mount close to a traveling surface, wherein left and right front wheels having a small diameter are arranged below a front portion of the low-floor mount, and the low-floor mount is provided behind the low-floor mount. ,
The left and right rear wheels formed to have a diameter larger than that of the front wheels, and a fan portion extending backward from the low-floor mount so as to cover the upper surface of the rear wheels are provided. Then
Furthermore, the electric traveling vehicle for a simple type of work, which is equipped with a low floor mount, characterized in that the fuser portion is also used as a footrest step. 2. The structure according to claim 1, wherein the left and right rear wheels are drive wheels, and a battery is provided between the left and right rear wheels.
Further, the electric traveling vehicle for a simple type work, which is provided with a low floor mount, characterized in that a seat portion is detachably provided on the upper side of the battery. 3. The electric running vehicle for a simplified work according to claim 1 or 2, wherein the low floor mount is detachably provided with a front seat portion whose height is adjustable.