JP2000192416A - Road roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and surely roll asphalt compound sprayed downward of an obstacle even when the obstacle such as a guard rail exists in an operating handle of a road roller. SOLUTION: A bearing member 4 opened downward is fixed to the lower part of the rear end of a miniaturized road roller 1, the horizontal lower end 2a of an operating handle 2 is inserted in both right and left directions through a rubber sleeve in a rotational manner, and asphalt compound downward of an obstacle such as guard rail or the like is rolled. In that case, the operating handle 2 is tilted to carry out rolling work while inserting the road roller 1 in a lower space section of the obstacle and, at the same time, it is made to pass through the guard rail to make it possible to carry out rolling work of the neighboring road or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road surface compactor for rolling asphalt mixture spread on a road surface to pave the surface so that the surface becomes smooth, and in particular, to improve the handling and workability by downsizing. It relates to a road compactor.

[0002]

2. Description of the Related Art Heretofore, a vibrating force of a flat plate vibration type road surface compactor has required more than 5 N / cm ^{2 with} respect to a contact area of a diaphragm. This value is empirically the vibrating force to give a density that does not deform or damage even if a general automobile runs after rolling the heated asphalt mixture with a plate vibration type road surface compactor and cooling it to room temperature. . In order to obtain this vibrating force, the weight of the vibration shaft and the strength of the supporting portion must be increased, and as a result, the weight becomes heavy.

[0003] In addition, the prime mover that drives the vibrating shaft also has a large weight and a high height because its output has a large horsepower. Therefore, for example, a diaphragm, a vibration shaft, an anti-vibration rubber and a fuel tank that support the main components of the weight of a plate vibration type road surface compactor of 20 cm width × 30 cm length, which is the minimum required size of the diaphragm of the compactor, The total weight is more than 30kg, the required horsepower of the prime mover is 2.5 horsepower, and the height of the main body is almost 40cm as a result of being occupied by the prime mover height.

Further, an operation handle is mounted on a rear end face of the road compactor so that an operator can operate the machine in a comfortable posture. The conventional operation handle is fixed integrally to the road compactor. In addition, the height was set to about 80 cm or more in order to improve operability by male workers.

[0000]

As described above, the conventional road surface compactor has a problem that, because of its heavy weight and high height, its workers are almost always limited to strong men. As shown in FIG. 6, even if the asphalt mixture A under the guardrail B is to be paved on a road surface or a road surface beyond the same, the compactor body C
Cannot hit the guardrail B to perform rolling work. Therefore, in such a place, it is the present situation that workers are working manually, and not only requires a great deal of labor but also requires a long working time. There was a problem that it became long and inefficient.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object the purpose of being able to handle easily, to easily perform a compaction operation, and to be applicable even when structures such as guardrails are present. It is an object of the present invention to provide a road surface compactor capable of smoothly and surely compacting a road surface in a lower space portion of a structure and a road surface therebelow.

[0007]

In order to achieve the above object, a road surface compactor according to a first aspect of the present invention has a prime mover mounted thereon, and the eccentric shaft is rotated at a high speed by using the rotational force of the prime mover as a drive source. A vibrator that generates centrifugal force is attached to the diaphragm,
In the rolling machine that performs compaction and self-running simultaneously by this vibration, the vibrating force per area of the diaphragm is set to 2 N / cm ² or less, and the total own weight is set to 20 kg or less.

[0008] Further, the invention according to claim 2 is based on claim 1.
Wherein the height of the main body including the fuel tank, the prime mover, the eccentric shaft exciter, the diaphragm and the like is configured to be 36 cm or less.

According to a third aspect of the present invention, a bearing member is fixed to the rear end surface of the road compactor body, and the lower end of the handle is inserted into the bearing member so as to be rotatable in the left-right direction. Features.

[0010]

[Function and effect] Since the road surface compactor has a vibrating force per area of the diaphragm of 2 N / cm ² or less, it is difficult to use because it does not increase in density for general asphalt road construction where trucks, passenger cars, etc. pass. However, the maximum weight is suitable for construction of sidewalks where bicycles and the like run, and the size of the excitation shaft is reduced and the output of the prime mover that drives the excitation shaft is reduced by reducing the horsepower to reduce the size and weight. Accordingly, the entire road compactor can be reduced in size and weight. In addition, due to restrictions on women's employment under the Labor Standards Law, there are restrictions on the work that must not be carried around with equipment that is 20 kg or more, but this condition can be satisfied and women can operate easily. A road compactor can be provided. In addition, at the work site, it is necessary to frequently move the road compactor, but since the total weight of the road compactor is less than 20 kg, even women can easily lift it and transport it to the next moving place. Can be.

[0011] In addition, guardrails and guard cables are mainly used as protective fences for partitioning roads in Japan, but the height from the road surface to the lower end thereof is designed to be at least about 40 cm. There is a minimum of about 36cm, considering the maximum rise of road surface material up to 4cm. However, according to the present invention, as described in claim 2, since the height of the main body of the road compactor is configured to be 36 cm or less, the road compactor is inserted into the space below the guard rail or the guard cable. Therefore, it is possible to reliably and efficiently perform the rolling work on the lower road surface such as the guardrail and the road surface ahead thereof.

Further, when a road surface rolling machine performs a rolling operation on a road surface below a guard rail or a guard cable, and subsequently performs a rolling operation on a road surface beyond the guard rail or the guard cable, the guard rail or the like hinders the passage of the handle. However, in the present invention, as described in claim 3, a bearing member is fixed to the rear end surface of the road surface compactor main body, and the lower end portion of the handle is inserted into the bearing member so as to be rotatable left and right. By tilting the handle in the left-right direction, it is possible to easily and reliably pass through the lower space such as the guardrail, and the rolling work on the road surfaces on both sides partitioned by the guardrail can be efficiently performed.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a preferred embodiment of the present invention; FIG.
Reference numeral 1 denotes a plate vibration type road compactor main body, in which a base 1c is mounted on a plate-shaped vibration plate 1b on which an exciter 1a is installed, and a motor 1d is mounted on the base 1c. A fuel tank 1e is disposed on the prime mover 1d, and the drive of the prime mover 1d drives the vibrator through a belt 1h extending between the rotary pulley 1f on the prime mover side and the rotary pulley 1g on the exciter side. The vibration plate 1b is vibrated by rotating the eccentric shaft 1a at high speed, and the vibration causes the asphalt mixture A spread on the road surface to be compacted by compaction and self-propelled simultaneously.

In the road surface compactor body 1 configured as described above, the vibrating force per unit area of the diaphragm 1b is 2 N / cm.
² or less, and the overall weight is 20 kg or less and the height is 36 cm or less to reduce the weight and size.
Then, a handle 2 made of a pipe material such as a steel pipe and having a height of about 80 cm is attached to the rear end surface of the road surface compactor main body 1 to form a compact flat-plate vibration type road surface compactor.

The handle 2 has a horizontal lower end 2a formed on a cylindrical bearing member 4 having a fixed length and a fixed diameter attached to a support plate 3 fixed to the rear end face of the base 1c of the road surface compactor body 1. It is rotatably mounted in the left-right direction and protrudes obliquely upward from the horizontal lower end 2a toward the upper end, and a grip 2b is provided at the upper end higher than the road surface compactor main body 1.
Is installed.

The mounting structure of the handle 2 will be described in detail. The bearing member 4 is fixed to the center of the support plate 3 in a state of horizontally penetrating in the front-rear direction. Of the road surface compactor main body 1 and project rearward along the lower side of the prime mover 1d.
It faces rearward below the rear end of 1d. Horizontal lower end 2a of handle 2 rotatably inserted into bearing member 4
As shown in FIG. 3, an end plate 5 is fixed to the front end of the bottom plate 4. Bolt insertion holes are formed in the center of the end plate 5 and the center of the bottom plate 4 a forming the front end surface of the bearing member 4. 6a and 6b are drilled, respectively. Bolts 7 are inserted into these bolt insertion holes 6a and 6b, and nuts 11 are screwed into bolt ends protruding from the bottom plate 4a. The horizontal lower end 2a is prevented from coming off, and the bolt 7
The horizontal lower end 2a of the handle 2 is supported in the circumferential direction along the inner peripheral surface of the bearing member 4 around the center of rotation, that is, the handle 2 is rotatably supported in the left-right direction.

Further, the inner peripheral surface of the bearing member 4 and the handle 2
A cylindrical rubber sleeve 8 having a certain thickness is interposed between the outer peripheral surface of the horizontal lower end 2a and the handle 2 tilting freely in the left-right direction due to its own weight or the like due to the frictional resistance of the rubber sleeve 8. Has been prevented. The rubber sleeve 8 is provided between the inner peripheral surface of the bearing member 4 and the horizontal lower end of the handle 2.
2a is mounted on one of the outer peripheral surfaces thereof. Therefore, when mounted on the bearing member 4, the frictional force between the rubber sleeve 8 and the horizontal lower end 2a of the handle 2 causes However, when the handle 2 is mounted on the horizontal lower end 2a side, the frictional force between the rubber sleeve 8 and the inner peripheral surface of the bearing member 4 prevents the handle 2 from tilting unexpectedly as described above. Things.

Further, pin-shaped engaging members 9, 9 are respectively provided on the upper and lower portions of the outer peripheral surface of the rear end of the horizontal lower end 2a of the handle 2 projecting from the bearing member 4 so as to project in the vertical direction. The front peripheral portions of the engaging members 9, 9 are slidably contacted with the rear end surface of the opening of the bearing member 4 in the circumferential direction, and pin-shaped stopper members 10, 10 are provided on both side surfaces of the rear end portion of the bearing member 4. Is fixed, and the rear half portions of these stopper members 10, 10 are projected rearward from the rear end of the bearing member 4, and the engaging members 9, 9 are brought into contact with the projected portions so that the handle 2 is in a horizontal or lower state. To prevent the grip 2b from touching the ground.

In a normal mounting state in which the handle 2 is erected upward from the rear end of the road compactor main body 1, the height of the grip 2b provided at the upper end of the handle 2 from the road surface is determined by the work. The height is set so that the member can walk in the most comfortable posture while gripping the grip 2b, that is, the height is approximately 80 cm. This grip 2b is a handle 2 in the figure.
The upper end of the handle 2 is formed to be bent obliquely rearward, but may be formed in a forked grip that projects horizontally from the upper end of the handle 2 to the left and right sides.

The mode of use of the compact flat-plate vibratory road compactor constructed as described above will be described. Structures such as guard rails and the like that hinder the movement of the road compactor main body 1 on the road to be paved with the asphalt mixture A. Is not present, the operator grips the grip 2b with the handle 2 upright, operates the handle 2 while driving the road compactor body 1 to vibrate the diaphragm 1b, and The asphalt mixture A is compacted by moving the compactor main body 1 in a predetermined direction, thereby paving the road surface. When the handle 2 is positively pushed, the road surface compactor body 1 can be pushed in a desired direction through the contact engagement members 9, 9 on the rear end face of the bearing member 4. The total weight of the road compactor is 20kg.
With the configuration described below, even a woman can easily lift and transport it to the next moving place.

Next, as shown in FIG. 5, when a guardrail B is erected on the road surface, the asphalt mixture A is rolled by the road surface pressing machine body 1 to a portion near the guardrail B. The operator operates the handle 2 without interrupting the compacting operation, and the road compactor main body 1 is operated.
Is pushed toward the guardrail B side and into the space below the guardrail B, the height of the road surface compactor main body 1 is formed lower than the height from the road surface to the lower end of the guardrail B. 1 can easily enter the space below the guardrail B, and the asphalt mixture A in that portion can be continuously rolled.

Further, when the road surface compactor main body 1 is to be passed through the guard rail B to be used for rolling the asphalt mixture A on the road surface therebefore, it becomes an obstacle to the passage of the guard rail B. The handle 2 is rotated left or right about the bearing member 4 attached to the rear end of the road surface compactor body 1 so that the handle 2 does not hit the guardrail B. The asphalt mixture A is pressed by the road surface pressing machine main body 1 and passed through the handle 2 together with the road surface pressing machine main body 1 while being pressed. At this time, when the handle 2 is rotated left or right, the engaging members 9 projecting from the horizontal lower end 2a of the handle 2 engage the stopper members 10 projecting from the bearing member 4, The handle 2 can be easily operated because the grip 2b does not touch the road surface on which the asphalt mixture A has been sprayed by being locked to the handle 10.

As described above, even when an obstacle such as the guardrail B exists, the height of the grip 2b can be reduced by rotating the handle 2 in either the left or right direction. While the lower asphalt mixture A is reliably and efficiently rolled, the rolling operation can be continuously performed up to the asphalt mixture A on the road surface ahead.

The horizontal lower end 2a of the handle 2 is inserted into the bearing member 4 fixed to the rear end face of the road compactor body 1, and the center of the rear end face is bolted to the center of the front end face of the bearing member 4. The handle 2 can be smoothly rotated in the left-right direction, and of course, the handle 2 is not pulled out of the bearing member 4 even when pulled backward, and can be rolled as usual. The rubber sleeve 8 is interposed between the inner peripheral surface of the bearing member 4 and the outer peripheral surface of the horizontal lower end 2a of the handle 2, so that the grip can be performed. Even if 2b is released, there is no danger that the handle 2 will rotate by its own weight or the like due to the frictional resistance of the rubber sleeve 8, and the handle 2 can be reliably held at the operation position. Hand against resistance By rotating the 2 in the lateral direction, compaction while maintaining a desired tilt angle, in which perform better efficiency paving work.

[Brief description of the drawings]

FIG. 1 is a side view of an entire road compactor;

FIG. 2 is a rear view thereof,

FIG. 3 is an enlarged vertical sectional side view of a rotating portion of the operation handle.

FIG. 4 is a rear view thereof,

FIG. 5 is a perspective view in which a part is shown in a cross-section showing a rolling compaction state;

FIG. 6 is a simplified perspective view of a conventional road surface compactor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Road surface compactor main body 1a Exciter 1b Vibration plate 1d Motor 2 Handle 4 Bearing member

Claims (3)

[Claims] 1. A motor is mounted on a tower, and an exciter for generating a centrifugal force by rotating an eccentric shaft at a high speed using a rotational force of the motor as a driving source is attached to a diaphragm. At the same time, the vibrating force per area of the diaphragm is set to 2 N / cm ² or less, and its own weight is 20
A road surface compaction machine characterized in that it is weighed below kg. 2. The road surface compactor according to claim 1, wherein the height of the main body including the fuel tank, the prime mover, the eccentric shaft exciter, the diaphragm and the like is set to 36 cm or less. 3. The method according to claim 1, wherein a bearing member is fixed to a rear end face of the road surface compactor body, and a lower end of the handle is inserted into the bearing member so as to be rotatable left and right. A road surface compaction machine according to item 1.