JPH0118652Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to an improvement of a vibratory compaction machine.

[Prior art]

In general, in ground compaction work and asphalt pavement work, vibratory compaction machines called plate compactors are widely used as devices to further compact and beautifully finish the surface after compacting it with a typing rammer or roller. There is.

By the way, this vibratory compaction machine is configured to perform compaction or finishing work on the surface to be compacted by converting the rotational force of the prime mover into vertical vibration using a vibration mechanism and transmitting this vertical vibration to the compaction platen. There is.

[Problem that the invention attempts to solve]

However, this type of vibratory compaction machine is basically configured to perform work while moving forward, so when the machine returns to its original position after moving a certain distance, or when it re-compacts a previously compacted area. In some cases, it is necessary to rotate the compaction machine to perform the work, which is troublesome and also causes inconveniences such as a decrease in efficiency when the work is carried out for a long time.

Therefore, in order to avoid such inconvenience, for example, the vibration mechanism is hingedly connected to the pressure platen,
A type of compaction machine has been proposed in which the vibration mechanism is tilted in a desired direction and the vertical vibration caused by the vibration mechanism acts as forward running force or backward running force for the convenience of users. Since the vibration (impact) load is concentrated at the connection part, it is necessary to have a strong structure, which poses problems such as increased manufacturing costs.

[Means for solving problems]

Therefore, in order to solve the above-mentioned problems, this invention inclines the pressure surfaces of the pressure plate upward at a predetermined angle with respect to the vibration center line of the vibration mechanism, and converts these slopes into forward pressure surfaces and backward pressure surfaces. By configuring it as such, it is possible to perform forward and backward operations without performing a turning operation.

In this case, the vibration mechanism is configured such that eccentric pendulums are provided on two horizontal shafts arranged a predetermined distance apart, and vertical vibration is generated by rotating these eccentric pendulums in opposite directions. It is preferable to use a two-axis eccentric pendulum vibrator.

[Effect]

The vibratory compaction machine according to this invention performs forward compaction work or backward compaction work by appropriately tilting the compaction machine body along the inclined pressure surface of the compaction platen.

〔Example〕

Next, preferred embodiments of the vibratory compaction machine according to the present invention will be described in detail below with reference to the accompanying drawings.

In FIG. 1, the vibration compaction machine according to the present invention has an engine 1 installed at the top of a compaction machine body 10.
By transmitting the rotational force of 2 to the compaction plate 16 via the biaxial eccentric vibration device 14, the compaction work of the surface to be compacted is performed while moving the machine forward or backward as desired.

That is, the drive shaft of the engine 12 is connected to a pulley 24 attached to a drive shaft 22 of the biaxial eccentric vibration device 14 via a clutch mechanism (not shown), a pulley 18, and a V-belt 20. A transmission gear 30 fixed to a transmission shaft 28 arranged parallel to the drive shaft 22 meshes with the drive gear 26 fixed to the end of the drive shaft 22. Eccentric pendulums 32 and 34 are mounted on each side, and the rotational force of the engine 12 is converted into vertical motion by rotation of these eccentric pendulums 32 and 34 in mutually opposite directions.

In addition, the pressure surfaces 16a and 16b of the pressure platen 16
are the forward direction (solid line arrow) and the backward direction (broken line arrow) with respect to the vibration center line A of the vibration device 14.
The angles are each inclined at a predetermined angle α to form an acute angle.

Note that in the accompanying drawings, reference numeral 36 is an operating handle that is partially extended from a mounting member 42 that is erected on an engine mounting base 40 that is mounted to the vibration device 14 via a vibration isolating rubber 38.

When compacting or finishing the surface GL to be compacted using the vibration compaction machine according to the present invention configured as described above, for example, while moving it forward, the second
As shown in Fig. a, the compaction machine main body 10 can be tilted forward by operating the operating handle 36 to keep the compaction surface 16a on the ground. 2b
As shown in the figure, the compaction machine main body 10 may be operated by tilting the compaction machine body 10 rearward and holding the other compaction pressure surface 16b in contact with the pond.

[Effect of idea]

As mentioned above, the vibration compaction machine according to the present invention tilts the pressure surfaces of the pressure plate upward at a predetermined angle with respect to the vibration center line of the vibration mechanism, and converts these slopes into forward pressure surfaces and Since it is configured as a backward pressure surface, it is possible to not only perform compaction work by moving the compaction machine body forward and backward by tilting it in a desired direction, but also to simplify the structure and reduce manufacturing costs. It has various advantages such as:

Although the plate compactor has been described above as a preferred embodiment of the vibration compaction machine according to the present invention, the present invention is not limited to this embodiment, and can also be suitably configured as a tamping rammer. Of course, various modifications can be made without departing from the spirit of the invention.

[Brief explanation of the drawing]

Fig. 1 is an explanatory partial cross-sectional view showing a preferred embodiment of the compaction machine according to the present invention, and Fig. 2a is an explanatory view when the compaction machine shown in Fig. 1 is moved forward to perform compaction work. 2b is an explanatory diagram when the compaction machine shown in FIG. 1 is moved backward to perform compaction work. 14...Two-axis eccentric vibration device, 16...Tension platen,
26... Drive gear, 30... Transmission gear, 32,3
4...Eccentric pendulum, 36...Operation handle.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Consisting of a vibratory compaction machine that converts the rotational force of a prime mover into vertical vibration using a vibration mechanism and transmits this vertical vibration to a compaction platen to compact the surface to be compacted. A vibration compaction machine, characterized in that the pressure surfaces of the pressure platen are each inclined at a predetermined angle with respect to the vibration center line of the vibration mechanism, and each of these inclined surfaces is configured as a forward pressure surface and a backward pressure surface. (2) The vibration mechanism is a two-shaft structure in which eccentric pendulums are installed on two horizontal shafts arranged a predetermined distance apart, and vertical vibrations are generated by rotating these eccentric pendulums in opposite directions. A vibratory compaction machine according to claim 1, which uses an eccentric vibrating device.