JP2602440Y2 - Tracked vehicle - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention is applied to a golf course on a lawn or a soft surface such as a ground, for example, a culvert for drainage of a golf course , a drain pipe, a water pipe, an underground object such as an electric wire. Underground
The present invention relates to a track type vehicle used for retracting a vehicle.

[0002]

2. Description of the Related Art Conventionally, as an example of this kind of endless track type vehicle, as shown in FIG. A configuration is known in which both ends of each rubber sheet b are fixed to each shoe a by bolts so that the pointed ends of the shoes a, a having a triangular side surface do not directly contact the ground. As another example of a conventional endless track type vehicle, as shown in FIG. 5, a flat portion is formed on the tip side of each shoe a, and the endless rubber belt c runs across the flat portion of each shoe a. A configuration is known in which a plurality of detachment prevention rollers d for preventing the rubber belt c from detaching laterally from the shoe a are provided at a plurality of places, while being slidably wound in the left-right direction with respect to the direction. See Japanese Utility Model Laid-Open No. 3-16588).

[0003]

However, in the prior art shown in FIG. 4, the rubber sheet b having both ends fixed to the adjacent shoes a, a of the conventional example shown in FIG. It is bent in the space between a,
Not only deformed to protrude outward by the elastic repulsion force of its own when away from the ground plane, turning time or previous
When a load of a certain magnitude or more is applied when moving forward or backward , the shoes a and a cannot slide on the rubber sheet b, and the rubber sheet b is placed on the ground surface with a large load applied. Because of the large slip, the grass on the golf course, which is the ground contact surface, is damaged, and a large footprint is left on the course. Therefore, it took time and cost to repair and level the lawn and the like. On the other hand, in the latter configuration shown in FIG. 5, when the direction is changed, the shoe a can be slid with respect to the rubber belt c for the time being, but a protrusion that can engage with the shoe a is provided inside the rubber belt c. In some cases, the shoe a may not be able to smoothly slide on the rubber belt c due to the engagement of the shoe a with the protrusion on the inner side of the rubber belt c. There was a risk of leaving a mark. In addition, a part of the endless rubber belt c that slides relatively to each shoe a moves downward on the side where the tension is strong, as shown in FIG. As shown in FIG. 7, on the side where the tension is weaker, the roller d moves upward so as to rise in the length direction of the separation prevention roller d. The life of c was shortened and the running cost was relatively high.

The present invention solves these problems of the prior art, and is useful not only when driving in a straight line on a lawn or a ground of a golf course , but also when changing directions or moving forward or backward.
Even when a load of a certain size or more is applied, the grass and the like will not be damaged, and large footprints will not be left, so that the number of steps and costs required for repairing and leveling the grass and the like can be reduced. In addition to the above-mentioned purpose, in addition to the above-mentioned purpose, the endless track type vehicle which can reduce the power required for driving, prolong the life of the rubber belt, and therefore reduce the running cost can be provided. It is intended to provide a vehicle.

[0005]

The technical means of the present invention for achieving the above object is that an inner surface and an outer surface are formed to be entirely flat, and an endless rubber belt for grounding is provided. spans the distal end side of the entire shoe, is wound so as allow the sliding of the arbitrary direction of the shoe, before the car body
Friction between the shoe and the rubber belt during forward / backward drive
It is configured to transmit a driving force to a force . In the above-mentioned technical means, it is preferable that a tip end side of each shoe that comes into contact with the rubber belt is formed in a flat shape. In each shoe, a flat auxiliary shoe can be fixed to the tip of the shoe body having a triangular cross section. Further, it is preferable that the endless rubber belt is prevented from separating from the shoe in the left-right direction with respect to the running direction by a separation-preventing roller rotatably supported at a plurality of positions on the stationary portion. In addition, the endless rubber belt is configured to apply tension above the grounding side by a tension roller rotatably supported by a stationary portion, and it is preferable that the tension roller be provided so as to be adjustable in position with respect to the tension direction of the rubber belt. .

[0006]

According to the present invention having the above construction, since the endless rubber belt is grounded, the impact force applied to the ground contact surface during traveling can be reduced by the elasticity of the rubber belt, and the load can be dispersed throughout. Can be done, and
There is no risk of scratching the lawn when leaving the ground. Also, when turning, moving forward or backward, a certain size
When a load greater than that is applied , the shoe smoothly slides against the rubber belt that is endless and the entire inner and outer surfaces are flat, and the rubber belt is It is possible to minimize slipping and scratching, thereby preventing damage to the lawn and the like, and preventing irregularities on the ground contact surface. In addition, by forming the front end side of each shoe that comes into contact with the rubber belt into a flat shape, the entire ground contact surface can be pressed even more substantially even during traveling. In addition, the provision of the separation prevention roller can surely prevent the endless rubber belt for grounding from separating from the shoe. Also, the rubber belt held in tension by the tension roller does not bite under the separation prevention roller on the side where tension is strong, and does not rise above the separation prevention roller on the loose side where tension is weak. Is prevented.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. First, a first embodiment of the present invention will be described. 1 and 2 show a track type vehicle according to a first embodiment of the present invention. FIG. 1 is a side view, and FIG.
3 is a sectional view taken along the line AA of FIG. As shown in FIG. 1, in the endless track section, a chain-type power transmission means 3 is hung endlessly around a rear drive wheel 1 and a front driven wheel 2.

[0008] A number of shoes 4 are mounted on the outer peripheral side of the power transmission means 3 at predetermined intervals. These shoes 4 are formed in side trapezoidal shapes that gradually become narrower as the front and rear widths in the running direction reach the front end, and a flat portion 4a is formed on the front end (ground contact side). Flat portion 4a of the shoes 4 during traveling, is set to be lower position location in the horizontal plane of the ground. The width in the front-rear direction and the width in the left-right direction perpendicular to the paper surface of the flat portion 4a in each shoe 4 are set to, for example, about 100 mm and about 500 mm. tube
In consideration of the degree of softness of the ground on which the underground object is laid, the pitch at which the shoes 4 are attached, and the like, the number may be increased or decreased from the above example.

[0009] A rubber belt 6 whose entire inner surface and outer surface are formed as a flat surface (substantially smooth surface) and formed endlessly straddles the flat portion 4a on the tip side of the entire shoe 4, and the shoe The shoe 4 is wound around the flat portion 4a so that the shoe 4 can freely slide in an arbitrary direction.
The shoe 4 and the rubber belt 6 are used when the vehicle body moves forward and backward.
The driving force is transmitted by the frictional force between the shoe 4 and the rubber belt 6.
Is configured to reach. In other words, for underground objects
A load of a certain size or less when driving, such as when pulling underground
In the state where is applied, the friction between the shoe 4 and the rubber belt 6
When driving force is transmitted by frictional force and the underground object is pulled underground
When a load greater than a certain level was applied when traveling
Rubber cylinders that are stationary when stopped or when turning
Large frictional force between the
The shoe 4 slides (slip) with respect to the rubber belt 6
It is configured to be. Then, the drive wheel 1 is rotated in an arbitrary direction by a power source (not shown), and by operating a switching lever or a handle, the vehicle can move forward, backward, or change direction. When traveling on a golf course, the thickness of the rubber belt 6 for preventing the grass from being damaged is, for example, 12 m.
The thickness may be slightly increased or decreased from 12 mm in consideration of the rubber material used and the softness of the ground of a golf course where a drainage culvert is laid.

A tension roller 7 for rotatably holding the rubber belt 6 in a tensioned state is provided on the inner surface side of the upper moving path of the rubber belt 6, and a plurality of separation preventing rollers 10 are provided along the moving path that is not grounded. Are provided adjacent to the rubber belt 6 in a direction crossing the rubber belt 6.

The base end sides of the support member 8 of the tension roller 7 and the support shaft 9 of the separation preventing roller 10 are held by a vehicle body frame 5 which is a stationary portion. Separation prevention roller 10
When the thickness of the rubber belt 6 is about 12 mm, four on each side of each rubber belt 6, for example, two front and rear running parts of the rubber belt 6 and two upper running parts of the rubber belt 6.
Although it is provided at each location, the number and arrangement of the separation preventing rollers 10 may be changed to other numbers and arrangements different from those described above depending on the thickness and hardness of the rubber belt 6. The separation prevention rollers 10 need not always be provided on both sides of the rubber belt 6, and may be provided only on the outside when the inside is prevented from being separated by a vehicle body or the like.

The tension roller 7 for holding the rubber belt 6 in a tensioned state, for example, as shown in FIG. 2, has an axis crossing the running direction below the rubber belt 6 and is longer than the width of the rubber belt 6. Both ends of the rubber belt 6 projecting to the side are supported by the body frames 5 and 5 by the support members 8 and 8. Tension roller 7
The position of the rubber belt 6 is adjusted by mounting the support member 8 movably in the tensioning direction of the rubber belt 6 along a vertical hole 11 provided in the length direction thereof or by urging the support member 8 toward the rubber belt 6 by a spring. Can be held in tension by pressing.

The operation of the above configuration will be described below. The drive wheel 1 is rotated by the drive source, and this rotational force is transmitted to the power transmission means 3 and the shoe 4 ,
Furthermore, by transmitting the frictional force to the rubber belt 6 with the shoe 4, the vehicle can travel and perform various operations.
At this time, the load acting on the ground contact surface can be dispersed by the rubber belt 6 throughout. In particular, by forming the flat portion 4a on the tip side of each shoe 4, that is, on the side in contact with the rubber belt 6, as in the above embodiment, it becomes easier to distribute the load more evenly, and the ground surface may be scratched. Since there is no such effect, it is possible not only to suppress the uneven footprints generated on the ground contact surface in combination with the shock absorbing action of the rubber belt 6 but also to reduce the influence on the lawn. The rubber belt 6 having the inner and outer surfaces formed entirely flat is wound around the shoe 4. Even if the rubber belt 6 is stretched, the rubber belt 6 can be tensioned by the tension roller 7 whose position can be adjusted. Therefore, the rotational force of the drive wheel 1 can be reliably transmitted to the rubber belt 6.

A rubber belt 6 wound around the shoe 4
As described above, the entire inner and outer surfaces are formed to be flat so that the shoe 4 can freely slide in any direction. Therefore, when underground buried objects are retracted underground,
Underground buried objects such as stone, concrete gala, bedrock, etc.
The vehicle is overloaded by a certain amount due to obstacles, etc.
When the traveling of the vehicle stops, the rubber belt 6 and the soft surface
Due to the large static friction with the surface, the shoe 4
Rubber belt 6
Will remain stopped, scratching or vandalizing the tread
No. And removing obstacles, etc.
As a result, the vehicle is driven as described above to
Medium retraction work can be performed. Also, the vehicle turns
During replacement, stop the inner shoe 4 and rubber belt 6
And the outer shoe 4 and rubber belt
6 and the rubber shoe on the outer shoe 4
The shoe 6 and the rubber belt are almost the same as the
The driving force is transmitted by the frictional force with the
The inner rubber belt 6 is oriented in the running direction before turning.
In the same state as described above, a large static
Due to the friction, the shoe 4 is brought into contact with the rubber belt 6.
As a result, the amount of slip of the rubber belt 6 in the direction in which the rubber belt 6 turns in a state where a large load is applied to the course lawn or the like can be reduced. Therefore, also in the direction changing part, it is possible to significantly reduce the damage and Stepping saw marks to be applied to lawns, or the like. Vehicle turning
Later, you can move forward or backward as described above.
Wear.

Further, the plurality of separation preventing rollers 10 located on the side of the rubber belt 6 can prevent the separation while rotating while being in contact with the rubber belt 6 to be separated from the shoe 4. The tension roller 7 applies an appropriate tension to the rubber belt 6 while traveling from the drive wheel 1 side to the driven wheel 2 side, thereby eliminating the looseness of the rubber belt 6. Accordingly, as shown in FIG. 6, the rubber belt 6 bites under the separation preventing roller 10 at the portion of the separation preventing roller 10 near the driving wheel 1, and the portion of the separation preventing roller 10 near the tension roller 7. In FIG. 7, as shown in FIG.
The rubber belt 6 is prevented from rising above zero, the life of the rubber belt 6 is longer than in the conventional case, and the running cost is lower.

Next, a second embodiment of the present invention will be described. FIG. 3 is a side view showing the endless vehicle according to the second embodiment of the present invention. In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted, and different configurations will be described.

The feature of the present embodiment is that, as shown in FIG. 3, a flat auxiliary shoe 4B is fixed to a tip end (ground side) of each shoe body 4A having a triangular side surface and fixed to the tip. The point is that the portion 4a is formed. According to this configuration,
The endless track type vehicle for wetlands can be easily and inexpensively diverted for running on grass and grounds.

[0018]

According to the present invention, as described above, the entire inner surface and the outer surface are formed to be flat, and the endless rubber belt for grounding straddles the front end side of the entire shoe. As it travels with the rubber belt in contact with the ground, it can reduce the impact force applied to the ground contact surface, distribute the load throughout, and even when moving away from the ground surface Can be prevented from scratching the grass and the like, and can be prevented from damaging grass and the like, and the number of uneven footprints generated on a course or the like of a golf course can be reduced. Further, the above manner is formed in a flat surface across the inner and outer surfaces of the rubber belt, since the shoe may allow to slide freely in any direction relative to the rubber belt, diverted or when advancing, retreating Sometimes less than a certain size
When the upper load is applied , the shoe slides smoothly against the rubber belt, and the amount of the rubber belt slipping on the lawn etc. under a large load and scratching the lawn etc. can be reduced. In addition, the footprints in the turning part are made inconspicuous, and the lawn and the like are hardly damaged. Therefore, it is possible to reduce the number of operations and costs required for the restoration and leveling of lawns and the like, and it is possible to perform various works and the like at a low cost and efficiently.

Further, by forming the front end side of each shoe that comes into contact with the rubber belt into a flat shape, it is possible to substantially uniformly press the entire ground contact surface during traveling, thereby preventing damage to grass and the like and the occurrence of footprints. It can be further reduced. In addition, by fixing a flat auxiliary shoe to the shoe of a conventional wetland traveling crawler vehicle, it is very easy to use a wetland traveling crawler vehicle.
And it can be diverted at low cost for running on grass, ground, etc.

In addition, a plurality of separation preventing rollers
The operation efficiency can be improved by reliably preventing the endless rubber belt wound around the shoe from detaching from the shoe.

Further, since the rubber belt is held in tension by the tension roller, the tension roller moves in the direction in which the rubber belt on the side not contacting the ground comes into the portion of the separation prevention roller, or moves in the direction in which it is lifted. This can prevent the rubber belt from being damaged, prolong the life of the rubber belt, reduce power consumption, and reduce running costs.

[Brief description of the drawings]

FIG. 1 is a side view showing a track type vehicle according to a first embodiment of the present invention.

FIG. 2 is a sectional view of the crawler vehicle, taken along the line AA of FIG. 1;

FIG. 3 is a side view of the endless vehicle according to the second embodiment of the present invention.

FIG. 4 is a side view showing an endless track type vehicle according to a conventional example.

FIG. 5 is a side view showing a tracked vehicle in another example of the related art.

FIG. 6 is a partial cross-sectional view showing a state in which a rubber belt bites in the tracked vehicle.

FIG. 7 is a partial cross-sectional view showing a state in which a rubber belt is lifted in the crawler vehicle.

[Explanation of symbols]

 Reference Signs List 4 shoe 4a flat portion 4A shoe body 4B flat auxiliary shoe 6 rubber belt 7 tension roller 10 separation prevention roller

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁷ identification symbol FI // E02F 3/76 E02F 3/76 Z (58) Investigated field (Int.Cl. ⁷ , DB name) B62D 41/00- 65/00

Claims (6)

(57) [Scope of request for utility model registration] 1. A rubber belt for grounding, which has an inner surface and an outer surface that are entirely flat and has an endless shape, straddles the entire shoe tip and allows the shoes to slide in any direction. is wound so as to obtain, the body forward, backward
When driven, the frictional force between the shoe and the rubber belt
A tracked vehicle configured to transmit driving force . 2. The endless track type vehicle according to claim 1, wherein a tip end side of each shoe that comes into contact with the rubber belt is formed in a flat shape. 3. The endless track type vehicle according to claim 2, wherein each shoe has a flat auxiliary shoe fixedly attached to a tip end of a shoe body having a triangular side surface. 4. The endless rubber belt is prevented from separating from the shoe in the left-right direction with respect to the running direction by a separation-preventing roller rotatably supported at a plurality of locations on a stationary portion. The crawler vehicle according to 1. 5. The endless rubber belt according to any one of claims 1 to 4, wherein a tension roller is rotatably supported by a stationary portion, and a tension is applied above a ground contact side to maintain the tension state. Tracked vehicle. 6. The endless track type vehicle according to claim 5, wherein the tension roller is provided so as to be adjustable in position with respect to a tension direction of the endless rubber belt.