JPH0645890U - Bulldozer for golf course - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] Do not damage the grass on the golf course, leave no trail of the bulldozer on the course, reduce the power required for driving, and extend the life of the rubber belt. We provide bulldozers for golf courses that can reduce running costs. [Structure] Each shoe 4 constituting the caterpillar has a horizontal surface with a small relative width dimension formed on the ground contact surface side, and an endless rubber belt 6 mounted on each shoe is separated from each shoe by a plurality of detent rollers 10. Is prevented from falling off, and the intermediate portion of the upper movement path is held in a tensioned state by the tension roller 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a golf course bulldozer, and more particularly, to a golf course bulldozer used for forming drainage culverts or the like on a golf course.

[0002]

[Prior art]

 A conventional bulldozer of this type is known to have the following configuration. I. As shown in FIG. 4, one end of each rubber sheet b is tightened with bolts on the surfaces of two adjacent shoes a, a each having a triangular cross section, and the tips of the shoes a, a each having a triangular cross section are tightened. It is configured so that does not come into direct contact with the ground. II. As disclosed in Japanese Utility Model Laid-Open No. 3-16588, a horizontal surface having a narrow width dimension is formed on the grounding side of each shoe a that constitutes a caterpillar, and an endless rubber belt c is attached to the horizontal surface of each shoe a. At the same time, a plurality of anti-disengagement rollers d are provided along the rubber belt c to prevent the rubber belt c from falling off the shoe a (see FIG. 5).

[0003]

[Problems to be solved by the device]

 However, the conventional device has the following problems. (1) In the above-mentioned configuration I, the rubber sheets b whose both ends are fixed to the adjacent shoes a and a are bent between the adjacent shoes a and a on the ground side when they are separated from the surface of the course. The rubber sheet b is not only deformed by its own elastic repulsive force so as to project outward, but also cannot slide relative to the shoes a, a, which damages the lawn of the course. While giving, a large footprint was left on the course by the tip of each shoe a. (2) In the configuration of the above II, a part of the endless rubber belt c that relatively slides with respect to each shoe a when the bulldozer changes direction is prevented from slipping off on the side where the tension is strong. The roller d moves so as to dig into the lower side in the length direction (see FIG. 6), and on the side with weak tension, the detent roller d moves upward in the length direction (see FIG. 7). Not only was the power required for driving increased, but the life of the rubber belt c was shortened, and the running cost was high.

The present invention has been made in view of these circumstances. It does not damage the lawn of the golf course, does not leave the trail of the bulldozer on the course, and reduces the power required for driving. The purpose is to provide a bulldozer for golf courses that can extend the life of the rubber belt and reduce the running cost.

[0005]

[Means for Solving the Problems]

 The present invention has been made to achieve the above-mentioned object.The caterpillar has a horizontal surface with a small relative width formed on the ground side of each shoe, and an endless rubber belt is attached to the outer peripheral side of each shoe. At the same time, a rotatably configured stopper roller is arranged laterally along the rubber belt, and a tension roller that holds the rubber belt in a tensioned state is provided on the inner surface side of the upper rubber belt that is not on the ground side. A bulldozer for golf courses, which is characterized by the above. The ground-side horizontal surface of each shoe may be formed by horizontally fixing a flat-plate-shaped auxiliary shoe to the ground-side tip of the shoe having a triangular cross section.

[0006]

[Action]

 The horizontal surface on the ground side of the shoe should reduce the pressure from the weight of the bulldozer acting on the ground surface so that no footprint of the shoe remains on the ground surface. In addition, the endless rubber belt attached to each shoe reduces the impact force that the bulldozer exerts on the ground contact surface, and further reduces the pressure acting on the ground contact surface, so each shoe does not form uneven parts on the ground contact surface. Acts like. Also, when the bulldozer changes direction, the endless rubber belt slides relative to each shoe to reduce the amount of sliding on the lawn, significantly reducing damage to the lawn of the course by the bulldozer. . Further, the rubber belt held in a tensioned state by the tension roller does not bite below the slip prevention roller on the side where the tension is strong, and is prevented from rising above the slip prevention roller on the side where the tension is weak.

[0007]

【Example】

 Hereinafter, embodiments according to the present invention will be described with reference to the drawings. FIG. 1 shows an embodiment of the present invention. A golf course bulldozer has a rear drive wheel 1, a front driven wheel 2, and a chain-type power train that is hung on both wheels 1 and 2. A drive-related main body is constituted by the transmission means 3 and a power source (not shown) for rotating the drive wheel 1, and forward / backward movements and other operations are performed by operating a switching lever or a handle.

On the outer peripheral side of the power transmission means 3, a required number of shoes 4 are attached at set intervals to form a caterpillar. Each of these shoes 4 is formed with a horizontal surface 4a having a relatively small width along the moving direction of the power transmission means 3 at the tip end on the ground side. The width dimension of the horizontal plane 4a of each shoe 4 having a trapezoidal cross section and the depth dimension perpendicular to the paper surface are determined to be, for example, about 100 mm and 500 mm. It is needless to say that the value may be increased or decreased from the above-mentioned numerical values in consideration of the softness of the ground, the pitch at which the shoes 4 are attached, and the like.

On the horizontal surface 4a side of each shoe 4, an endless rubber belt 6 is attached in a slightly loose state. The thickness of the rubber belt 6 is, for example, about 12 mm in order not to damage the lawn of the course. The thickness of the rubber belt 6 is about 12 mm. It may be slightly increased or decreased from 12 mm in consideration of the softness of the ground.

The rubber belt 6 has a tension roller 7 rotatably attached to the inner surface of the upper movement path for holding the rubber belt 6 in a tensioned state. A plurality of anti-disengagement rollers 10 rotatably held at the tip are provided close to the rubber belt 6 in a direction intersecting the rubber belt 6.

The support member 8 of the tension roller 7 and the support shaft 9 of the disengagement prevention roller 10 are held by the body frame 5 of the bulldozer at their respective proximal ends. When the thickness of the rubber belt 6 is about 12 mm, the anti-separation rollers 10 are provided on each side of the rubber belt 6 at four positions, for example, at each side of the rubber belt 6 in the front-rear direction and at the upper running portion of the rubber belt 6. Although provided, the number and arrangement of the separation preventing rollers 10 may be changed to another number and arrangement different from the above case depending on the thickness and hardness of the rubber belt 6. The disengagement prevention rollers 10 do not necessarily have to be provided on both sides of the rubber belt 6, but may be provided only on the outer side when the inner side is prevented from falling off by the machine body.

For example, as shown in FIG. 2, the tension roller 7 holds the rubber belt 6 in a tension state on the machine body frames 5 and 5 by the support members 8 and 8 at both ends passing under the rubber belt 6. . The tension roller 7 is pressed against the rubber belt 6 side by moving the support member 8 of the tension roller 7 to the rubber belt 6 side along a longitudinal hole 11 provided in the lengthwise direction or by a spring to move the tension roller 7 to the rubber belt 6 side. It is performed by urging the side.

Next, the operation of the device will be described. When the drive wheel 1 is rotated by the drive source to move the caterpillar, the load of the bulldozer acting on the ground contact surface is received by the rubber belt 6 held on the inner surface side by the horizontal surfaces 4a of the shoes 4 so that the pressure is reduced. Since the bulldozer travels in this way, it is possible to perform various tasks without leaving uneven tracks on the course after running.

Further, since the rubber belt 6 attached to each shoe 4 absorbs the impact force applied from the bulldozer by its own elastic force, it reduces the pressure of the bulldozer and damages the lawn planted on the course. Significantly less. Moreover, when the bulldozer changes direction on the course, the rubber belt 6 contacting the ground causes a slip between the shoes 4 and changes the direction slightly less than the bulldozer. Even in the direction-changing part, which was less likely to damage the lawn, damage to the lawn and footprints left on the course are significantly reduced.

The tension roller 7 gives an appropriate tension to the rubber belt 6 on the drive wheel 1 side and the driven wheel 2 side to eliminate the looseness of the rubber belt 6. Therefore, the rubber belt 6 cuts into the lower side of the anti-slip roller 10 near the drive wheel 1 as shown in FIG. 6 or the portion of the anti-slip roller 10 near the tension roller 7. As shown in FIG. 7, it is possible to prevent the rubber belt 6 from rising to the upper side of the shift prevention roller 10, the life of the rubber belt 6 becomes longer than in the conventional case, and the running cost is cheaper.

Moreover, each shoe 4 is not only in planar contact with the ground at the horizontal plane 4a through the rubber belt 6, but also when it is separated from the ground plane at the rear end of the caterpillar. One of the corners of the horizontal surface 4a formed with a relatively small size prevents the unevenness scars from being left on the ground contact surface via the rubber belt 6.

FIG. 3 shows another embodiment of the present invention, in which each shoe 4 having a trapezoidal cross section in the above embodiment is a flat auxiliary shoe on the ground-side tip of each shoe 4A having a triangular cross section. This is a case where the 4B is fixedly formed in a horizontal state. In the case of this structure, the bulldozer for wetlands can be improved to a golf field bulldozer very easily and inexpensively.

[0018]

[Effect of device]

 According to the present invention, the following excellent operational effects are exhibited.

In the bulldozer for a golf course according to claim 1, a horizontal surface having a small relative width is formed on the ground side of each shoe of the caterpillar, and a plurality of endless rubber belts are attached to each shoe. The slip-off prevention roller prevents the shoe from slipping off, and the tension roller in the upper movement path keeps it in tension, so not only the pressure acting on the ground contact surface is reduced, but also the elasticity of the rubber belt is reduced. And the sliding action of the rubber belt with respect to each shoe, it is possible to significantly reduce the degree of damage to the lawn of the course and the formation of footprints.

Further, since the rubber belt is held in a tension state by the tension roller, the tension roller moves in a direction in which the rubber belt on the non-grounded side bites into the part of the disengagement prevention roller or moves in a rising direction. Can be prevented from being damaged due to damage, and the life of the rubber belt can be extended and the power consumption can be reduced to reduce the running cost.

In the bulldozer for a golf course according to a second aspect of the present invention, the horizontal plane on the ground side of each shoe constituting the caterpillar has a flat auxiliary shoe in a horizontal state at the ground-side tip of the shoe having a triangular cross section. Since it is fixedly attached to the bulldozer, the conventional bulldozer for wetlands can be easily and inexpensively improved into a bulldozer for golf courses having the characteristics of the present invention.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

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

FIG. 3 is a side view showing another embodiment of the present invention.

FIG. 4 is a side view showing an example of a conventional example.

FIG. 5 is a side view showing another embodiment of the conventional example.

FIG. 6 is a partial cross-sectional view showing a biting state of a rubber belt.

FIG. 7 is a partial cross-sectional view showing a lifted state of a rubber belt.

[Explanation of symbols]

 4,4A shoe 4a horizontal surface 4B flat plate-shaped auxiliary shoe 6 rubber belt 7 tension roller 10 slip-off prevention roller

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Claims (2)

[Scope of utility model registration request] 1. A caterpillar has a horizontal surface having a small relative width dimension formed on the ground side of each shoe, and an endless rubber belt is mounted on the outer peripheral side of each shoe and is detachable so as to be rotatable. The golf course is characterized in that the stop roller is disposed along the width direction of the rubber belt, and a tension roller for holding the rubber belt in a tension state is provided on the inner peripheral side of the upper rubber belt which is not the ground side. For bulldozer. 2. The bulldozer for a golf course according to claim 1, wherein a horizontal plane on the ground side of each shoe is formed by horizontally fixing a flat auxiliary shoe to the ground-side tip of the shoe having a triangular cross section. .