JP2001253202A - Wheel and working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wheel and a working vehicle capable of securely traveling on a soft ground without using an attachment such as an auxiliary wheel. SOLUTION: When a wheel main body 9 is driven for rotation in the condition that the wheel main body 9 is buried under the soil, a soil scraping member 12 projected from a side of the wheel main body 9 pushes the soil 11 backward in the rotating direction of the wheel main body 9. With this structure, since the propelling force by the wheel 4 is improved, generation of slip or the like is prevented, and the secure traveling on the soft ground 10 is realized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel, a working vehicle, and a traveling method which are excellent in traveling reliability on a soft land such as a paddy field.

[0002]

2. Description of the Related Art For example, in a work vehicle such as a passenger management machine or a rice transplanter that travels on a soft land such as a paddy field, the wheels may be buried in the soft land and slip, and it may not be possible to escape on its own. is there.

Therefore, conventionally, in order to prevent the sinking or slipping of the wheels on the soft ground, auxiliary wheels such as car wheels or auxiliary non-skids have been mounted on the driving wheels in advance. He had entered a soft land.

[0004]

However, it is troublesome to attach and detach the auxiliary wheels and the auxiliary non-slip each time. In addition, when the vehicle travels between a soft ground and a hard ground, it may not be possible to determine whether or not the auxiliary wheels or the like should be mounted.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wheel, a work vehicle, and a traveling method that can reliably travel on a soft ground without using an attachment such as an auxiliary wheel. Is what you do.

[0006]

In order to solve the above-mentioned problems, a wheel according to the present invention comprises a wheel main body and soil protruding from the wheel main body to the side thereof and embedded in the wheel main body. And a soil removing member that is pushed backward by the rotational force of the main body in the rotational direction (claim 1).

Further, in the working vehicle according to the present invention, the driving wheel of the vehicle protrudes from the wheel main body and the wheel main body to the side, and the soil embedded in the wheel main body is moved by the rotational force of the wheel main body. And a soil removing member that pushes back in the rotation direction rearward (claim 2).

According to the wheel and the working vehicle of the present invention,
When the wheel main body is rotationally driven while being buried in the soil, the soil removing member projecting to the side of the wheel main body pushes the soil backward in the rotation direction of the wheel main body. As a result, the propulsive force of the wheels is increased, so that slipping or the like is prevented, and the vehicle can travel reliably even on a soft ground. In addition, since the soiling member protrudes to the side of the wheel main body, it does not hinder the rotation of the wheel main body. Further, since the soiling member is formed integrally with the wheel body, there is no need to carry it as a separate member, and there is no problem such as loss.

[0009] The dusting member may be a claw-shaped member or a wing-shaped member having a larger dusting area.

[0010] In the wheel or the working vehicle, the soil removing member may be fixed to the wheel body in a state of protruding from the wheel body to the side. Further, as a preferred embodiment, the soil removing member allows the attitude of the soil removing member to be freely changed to a projecting attitude from the wheel main body and a storage attitude to the wheel main body side, It is also possible to provide a posture holding means for holding in the overhanging posture and the storage posture (claim 3). According to this configuration, only when traveling on a soft ground, the posture holding unit holds the soiling member in the overhanging posture, and otherwise, holds the soiling member in the storage posture. By doing so, the soiling member is not hindered when the soiling member is not used, which is preferable.

[0011] Further, the soiling member can be freely opened and closed and slidable between a protruding posture opened from the wheel body to the side thereof and a storage posture closed along the wheel body. Attitude holding means for holding the scraping member in the overhanging attitude and the storage attitude may be provided (claim 4).

The posture holding means can be formed, for example, as follows.

That is, a pair of engaging portions are provided between the wheel main body side and the soiling member so as to engage with each other when the soiling member takes the overhanging posture and the storage posture. The soiling member is attached to the wheel main body so as to be movable in the length direction of the soiling member by at least a stroke necessary to release the engagement of the engaging portion.
An urging means is provided between the wheel body side and the soiling member to urge the soiling member in a direction in which the engagement of the engagement portion is maintained.

In this case, the soiling member is urged in a direction in which the engagement portions are engaged with each other and the engagement of the engagement portions is maintained by the urging means. The overhanging posture or the storage posture is maintained. When changing the posture of the soiling member, the soiling member is moved in the length direction thereof against the urging force of the urging means, and the engagement of the engaging portion up to that time is released. In this case, it is sufficient that the soiling member is rocked and the engaging portions are engaged with each other in a new posture.

According to the posture holding means having the above-described structure, there is an advantage that the posture changing operation of the soil removing member can be performed with one touch. Further, since the screw connection is not used for maintaining the posture of the soil removing member, there is no problem that the posture changing operation becomes impossible even if muddy soil adheres.

As another example of the posture holding means, the soiling member is inserted into at least one of the soiling member and the wheel body side, and the soiling member is extended with respect to the wheel body side and the storage posture. It is also possible to include a fixing pin that can be inserted and removed freely. In this configuration, when changing the posture of the soil removing member, the fixing pin is removed, the rocking member is rocked, and when the soil removing member is in a new posture, the fixing is performed. What is necessary is just to fix the position of the said soiling member with respect to the said wheel main body side with the pin for use.

According to the posture holding means of this configuration, since the screw connection is not used for maintaining the posture of the soiling member, there is no problem that the posture changing operation becomes impossible even if muddy soil adheres. .

In the working vehicle, the operation of changing the attitude of the soil removing member may be manually performed.
There may be provided a dusting member driving means for changing the position of the dusting member between the overhanging position and the storage position, and an operating member for remotely controlling the dusting member driving means. 7). According to this configuration, the operation of changing the position of the soiling member can be performed dynamically by the action of the soiling member driving means, so that the operation of changing the position of the soiling member can be performed labor-saving. In addition, it is not necessary for the driver to go to the vicinity of the wheel and manually change the posture of the soil removing member, which is preferable.

By the way, the wheel according to the present invention comprises a wheel main body and a soil which protrudes laterally from the wheel main body and rotates together with the wheel main body to increase the driving resistance of the wheel main body against the soft ground when the wheel main body rotates. A scraping member can be defined as an integrated member.

Similarly, in the working vehicle according to the present invention, the drive wheel rotates together with the wheel main body in a state in which the drive wheel protrudes from the wheel main body to the side, and the driving wheel is soft when the wheel main body rotates. A soiling member that increases driving resistance to the ground,
(Invention 9).

According to the wheel and the work vehicle, when the wheel body rolls on a soft ground, the wheel is rotated by the soiling member that rotates together with the wheel body while protruding from the wheel body to the side. Since the driving resistance against the soft ground when the main body rotates is increased, the propulsive force of the wheel main body is increased, and the vehicle can travel reliably even on the soft ground.

On the other hand, in the traveling method according to the present invention, the wheel main body is rotated while the soil removing member integrally formed on the wheel main body of the drive wheel is protruded to the side of the wheel main body. It is to be driven (claim 10).

[0023]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a left side view schematically showing a traveling vehicle body of a passenger management machine as an example of a work vehicle provided with wheels according to an embodiment of the present invention, and FIG. FIG. 2 is a sectional view taken along the arrow II.

The traveling vehicle body 2 of the passenger management machine 1 shown in FIG.
Is a so-called high clearance type vehicle body with a high minimum ground clearance, which is mainly suitable for paddy field work, although not shown, for example, equipped with a management work device such as a seed sowing device or a chemical spraying device. Therefore, it is suitable for performing various management tasks.

The traveling vehicle body 2 is supported by a pair of left and right steering front wheels 3 and 3 and a pair of left and right driving rear wheels 4 and 4, and a driver (operator) 5 is mounted on the vehicle body 2. A seat (driver's seat) 6 and a steering wheel 7 as a steering device are provided. The drive rear wheels 4, 4 are driven by, for example, a four-cycle internal combustion engine 8 mounted on the vehicle body via a differential (not shown) which is known per se.

The wheels according to the present embodiment are applied to the pair of left and right driving rear wheels 4, 4. Each drive rear wheel 4 projects the wheel body 9 and the soil 11 of the soft ground 10 in which the wheel body 9 is embedded by projecting outward from the wheel body 9 (S). And a soil removing member 12 that is pushed back in the rotation direction by force. In the present embodiment, the wheel body 9
A hub 14 fixed to a drive axle (rear axle) 13 of the vehicle body 2, a rim 15 positioned concentrically with the hub 14 outside the hub 14, and a rim 15 extending radially from the hub 14 The vehicle includes a plurality of (four in the example of FIG. 1) spokes 16 for connecting the hub 14 and the rim 15 to each other, and a tire 17 mounted on the rim 15. As is clearly shown in FIG. 2, each of the spokes 16 is attached near the rim-side end 16a.

In this embodiment, each of the soiling members 12
As shown in FIG. 2, is a rectangular rod-shaped member made of steel or the like shorter than the length of each spoke 16. In addition, each of the soiling members 12 has an outwardly extending posture S from the wheel main body 9, a storage posture R along the wheel main body 9,
The position of the wheel body 9 can be freely changed, and it can be used by protruding the wheel body 9 laterally outward only when necessary. That is, when the driving rear wheel 4 slips on the soft ground 10 and the smooth traveling cannot be performed, the respective soiling members 12 are raised from the storage position R and shifted to the overhanging position S, Drive rear wheel 4
Is driven to rotate.

The rim side end 16 of each spoke 16
To a, a soiling member supporting arm 18 is firmly fixed so as to extend laterally outward of the wheel main body 9. The soiling member support arm 18 extends leftward and laterally outward from the left driving rear wheel 4 and extends rightward laterally outward from the right driving rear wheel 4. Therefore, similarly to the soiling member 12, the soiling member supporting arm 18 itself also has the soil 11 on the soft ground 10 in which the wheel body 9 is embedded.
Is pushed backward by the rotational force of the wheel main body 9 in the rotational direction thereof, and the effect of improving the propulsive force of the traveling vehicle body 2 by the rotation of the driving rear wheel 4 to some extent is exerted.

Outer end 18 of each of the soiling member support arms 18
The soiling member 12 is firmly attached to a through a pivot shaft 19 extending in a direction perpendicular to a radial direction of the wheel main body 9 along a rotating vertical surface of the wheel main body 9. Each soiling member 1
2, the projecting posture S (posture indicated by a solid line in FIG. 2) that is opened laterally outward of the wheel main body 9 about the pivot shaft 19 and the rotating vertical surface of the wheel main body 9. The storage posture R (the posture shown by the phantom line in FIG. 2) is openable and closable.

When each of the soiling members 12 is in the overhanging posture S, it does not easily bend against an external force acting along the circumferential direction of the driving rear wheel 4. Therefore, in a state where the driving rear wheel 4 is buried in the soft ground 10, the soiling member 12 is moved to the overhanging posture S.
When the drive rear wheel 4 is rotationally driven to open, the soil removing member 12 pushes the soil 11 of the soft ground 10 backward in the rotation direction of the wheel body 9. This allows
When the wheel body 9 rotates, the driving resistance to the soft ground 10 increases, so that the propulsive force of the traveling vehicle body 2 by the driving wheels 4 increases, and the riding management device 1 does not slip and the like. The vehicle can travel on the soft ground 10 reliably.

In the present embodiment, the earthing member supporting arm 18 is a steel member having a forked portion at least at the outer end 18a. The bifurcated outer ends 18a are opposed to each other in an open state along the length direction of the pivot shaft 19, and the opening width is such that the base end 12a of the soil removing member 12 just fits. Dimensions. And
The soiling member 12 has the base end 12 a inserted into the bifurcated outer end 18 a of the soiling member support arm 18 and is pivotally supported by the pivot shaft 19.

Between the soiling member support arm 18 and the earthing member 12, there is provided an attitude holding means for holding the earthing member 12 in the overhanging attitude S and the storage attitude R. Is equipped. Various configurations can be adopted as the posture holding means.

FIG. 3 shows a first embodiment of the posture holding means.

The posture holding means 20 according to the first embodiment comprises:
The soiling member 12 is held in the extended position and the storage position by the biasing force of a spring, and the soiling member 12 is moved by the soiling member support arm 18.
In contrast, the soiling member 12 is movable by a predetermined amount along the length direction.

That is, the base end portion 12a of the soiling member 12 has a pivot shaft insertion slot 2 extending in the length direction thereof.
1 is formed, and the pivot 19 is inserted into the elongated hole 21. Therefore, the soiling member 1
Reference numeral 2 denotes a stroke corresponding to the length of the pivot shaft insertion slot 21 and is movable in the length direction. Further, a pin 22 as an engaging portion that abuts on the soiling member support arm 18 is fixed to the base end portion 12a side of the earthing member 12 so as to extend in parallel with the pivot shaft 19. ing.

On the other hand, each tip edge of the bifurcated outer end portion 18a of the soiling member support arm 18 is provided with the soiling member 12
The first pin receiving concave portion 23 as an engaging portion into which the pin 22 fits when in the overhanging posture S, and the pin 22 fits when the soiling member 12 is in the storage posture R. Second pin receiving concave portion 2 as engaging portion
4 are formed so as to be in a positional relationship perpendicular to each other with the pivot 19 as a center. Between the first pin receiving recessed portion 23 and the second pin receiving recessed portion 24 of the soiling member supporting arm 18, the soiling member 12 is positioned between the overhanging position S and the storage position R. When the changing operation is performed, an arc-shaped pin guide edge 25 centered on the pivot shaft 19 is formed so that the pin 22 of the soil removal member 12 slides and is smoothly guided.

The above-mentioned soiling member 12 is, for example,
The urging force of a tension coil spring 26 as urging means, which is stretched between the pin 22 and the pivot 19,
The direction in which the pin 22 and the pivot shaft 19 approach each other, that is, the direction in which the engagement of the pin 22 with the first pin receiving recess 23 and the second pin receiving recess 24 is maintained. It is being rushed.

In the above structure, the soil removing member 12
The pin 19 fits into the first pin receiving recess 23, and the pivot shaft 1 is
9, the projecting posture S
Is held. Similarly, when the pin 19 fits into the second pin receiving recess 24 and is urged in the direction of the pivot shaft 19 by the tension coil spring 26, the soiling member 12 The posture R is held.
When the posture of the soiling member 12 is changed between the overhanging posture S and the storage posture R, the soiling member 12 is moved to its length against the urging force of the tension coil spring 26. Pulling the pin 22 out of the first pin receiving recess 23 or the second pin receiving recess 24 and rotating the soiling member 12 about the pivot 19. Good. In the course of the operation of changing the position of the soiling member 12, the pin 22 is guided while sliding on the pin guide edge 25 of the soiling member support arm 18, as shown in FIG. The turning operation of the soiling member 12 is facilitated.

According to the posture holding means 20 according to the first embodiment, there is an advantage that the operation of changing the posture of the soil removing member 12 can be performed with one touch. In addition, the soiling member 1
Because the screw connection is not used to maintain the posture of 2,
There is no problem such as inoperability even if mud adheres.

Next, the posture holding means according to the second embodiment will be described with reference to FIG.

The posture holding means 30 according to the second embodiment comprises:
Using a position fixing pin 31 that can be freely inserted and removed, the soiling member 12 is moved to the projecting position S and the storage position R.
And let it be held.

That is, the base end portion 12a of the soiling member 12 and the soiling member support arm 18 are provided with pin insertion holes 32, 33 for fixing the position, respectively. The position fixing pin insertion holes 32, 33
When the position fixing pins 31 are inserted in such a manner as to match with each other, the soiling member 12 is held in the overhanging posture S. On the other hand, the position fixing pin 31 is pulled out, and the soiling member 12 is turned 90 degrees toward the center of the wheel body 19.
When rotated, the position fixing pin insertion hole 32 of the soiling member 12 is exposed from the soiling member support arm 18. Then, if the position fixing pin 31 is inserted into the position fixing pin insertion hole 32 of the soil removing member 12,
The position fixing pin 31 abuts on the side edge of the soiling member 18, and the soiling member 18 is held in the storage position R.

The position fixing pin 31 is, for example,
It is preferable to provide a release preventing means such as a retaining claw which can be freely released and to connect the soiling member supporting arm 18 and the like with a connecting tool such as a chain 34 without a risk of loss.

According to the posture holding means 30 according to the second embodiment, the screw connection is not used for maintaining the posture of the soiling member 12 as in the first embodiment. It is preferable because there is no problem such as inoperability even if mud adheres.

As described above, the operation of changing the posture of the soiling member 12 can be manually performed. However, the posture of the soiling member 12 is changed between the overhanging posture S and the storage posture R. It is also possible to provide a driving means for driving the soiling member and an operating member for remotely controlling the driving means for the soiling member.

Although not shown, a suitable type of linear actuator such as a hydraulic type or an electric type can be used as the soiling member driving means.
In this case, the actuator also functions as a means for holding the posture of the soiling member.

As the operation member, for example, an operation lever or an operation switch for controlling a hydraulic circuit or an electric circuit of the actuator can be used. From the driver 5
It is desirable to arrange them within the reach of the public.

According to this configuration, the operation of changing the attitude of the soiling member 12 can be performed dynamically by the action of the soiling member driving means.
In addition to the above, it is possible to perform the posture changing operation in a labor-saving manner, and it is necessary for the driver 5 to step down from the driver's seat 6 and go to the vicinity of the driving rear wheel 4 to manually change the posture of the soil removing member 12. Is eliminated, which is more preferable.

[Brief description of the drawings]

FIG. 1 is a left side view schematically illustrating a traveling vehicle body of a passenger management machine as an example of a work vehicle provided with wheels according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is an explanatory view showing a first embodiment of a soiling member posture holding means.

FIG. 4 is an explanatory view showing a process in the middle of the operation of the soiling member posture holding means shown in FIG. 3;

FIG. 5 is an explanatory view showing a second embodiment of the soiling member posture holding means.

[Explanation of symbols]

 Reference Signs List 4 driving rear wheel 9 wheel main body 10 soft ground 11 soil 12 soil removing member 20 posture holding means 22 engaging portion (pin) 23 engaging portion (pin receiving first concave portion) 24 engaging portion (pin receiving second concave portion) 26 Energizing means (tensile coil spring) 30 Posture holding means 31 Fixing pin (position fixing pin) R Storage posture S Overhanging posture

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Miki Nobuyuki 1-7-2, Suehirocho, Ome-shi, Tokyo Co., Ltd. Inside the Kyoritsu Corporation (72) Inventor Takeshi Takejo 1-7-2, Suehirocho, Ome-shi, Tokyo 2 Co., Ltd. Kyoritsunai F-term (reference) 2B063 AA04 AB01 AB08 BA02

Claims (10)

[Claims] 1. A wheel body (9) and a soil (11) which is protruded from the wheel body (9) to the side thereof (S) and in which the wheel body (9) is embedded is removed from the wheel body (9). ), Which is pushed backward by the rotational force of the
2) and a wheel integrally provided. 2. The driving wheel (4) comprises a wheel body (9).
And projecting to the side from the wheel body (9) (S)
And a soil removing member (12) that pushes the soil (11) embedded in the wheel body (9) backward in the rotation direction by the rotational force of the wheel body (9). , Working vehicle. 3. A posture changing operation of the soiling member (12) between a protruding posture (S) from the wheel body (9) and a storage posture (R) on the wheel body (9) side. The wheel or the vehicle according to claim 1, further comprising posture holding means (20, 30) for holding the soiling member (12) in the overhanging posture (S) and the storage posture (R). The work vehicle according to claim 2. 4. The protruding posture (S) in which the soil removing member (12) is opened from the wheel body (9) to the side thereof.
And the storage position (R) closed along the wheel body (9).
And the opening and closing swing operation is freely performed, and
2), the overhanging posture (S) and the storage posture (R)
The wheel according to claim 1 or the working vehicle according to claim 2, further comprising a posture holding means (20, 30) for holding the vehicle. 5. Between the wheel body (9) and the soiling member (12), when the soiling member (12) takes the overhanging posture (S) and the storage posture (R), A pair of engaging portions (23-22, 24-22) to be engaged are provided, and at least the engaging portion (23-22, 22) is attached to the wheel body (9) with the soil removing member (12).
24-22) is attached movably in the length direction of the soiling member (12) by a stroke necessary to release the engagement of the wheel body (9) and the soiling member (12).
And between the soiling member (12) and the engaging portion (23-
The wheel according to claim 4, wherein said attitude holding means (20) is formed by providing an urging means (26) for urging in a direction in which the engagement of the engagement of said posture holding means (22, 24, 22) is maintained. Or working vehicle. 6. The position holding means (30) is inserted through at least one of the soil removing member (12) and the wheel body (9) side, and the soil holding member (30) is inserted into the wheel body (9) side. The wheel or the work vehicle according to claim 4, further comprising a detachable fixing pin (31) for fixing the scraping member (12) in the extended position (S) and the stored position (R). 7. A soiling member driving means for driving the soiling member (12) to change its attitude between the overhanging position (S) and the storage position (R), and for remotely controlling the soiling member driving means. 4. An operation member comprising:
Or the working vehicle according to 4. 8. The wheel main body (9), and the wheel main body (9) in a state of protruding (S) from the wheel main body (9) to the side thereof.
Soiling member (12) that rotates together with the wheel body (9) to increase the driving resistance against the soft ground (10) when the wheel body (9) rotates.
And the wheels are integrally provided. 9. The drive wheel (4) comprises a wheel body (9).
And a soil removing member that rotates together with the wheel body (9) in a state where the wheel body (9) is protruded to the side (S) from the wheel body (9) to increase the driving resistance of the wheel body (9) against soft ground when the wheel body (9) rotates. (12) A work vehicle integrally comprising: 10. A state (S) in which a soil removing member (12) formed integrally with a wheel body (9) of a drive wheel (4) is protruded to the side of the wheel body (9). A driving method for rotating the wheel body (9).