JPH0729004U - Soundproofing device for vibration compactors - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to sufficiently reduce the impact noise generated by the compaction plate during compaction work. A vibration compactor comprising a rolling compaction plate equipped with an oscillating device and an engine mounted and fixed on an engine stand fixed on the rolling compaction plate via a cushioning body, and covering the periphery of the rolling compaction plate. In addition, a soundproof cover whose bottom surface is grounded to a road surface or the like is detachably provided to the machine body. Further, it is characterized in that a cushioning material is lined on the lower surface of the pressure roller.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a soundproofing device for a vibration compactor used for compacting a paved road surface in road construction and the like.

[0002]

[Prior art]

 Conventionally, as this type of vibration compactor, for example, there is one as shown in FIG.

This vibration compactor is mounted on a compaction plate 1, an oscillating device 2 mounted and fixed on the compaction plate 1, and an engine base 4 which is also fixed on the compaction plate 1 via a buffer body 3. It is composed of an engine 5 fixedly mounted and an operation handle 6 mounted on the engine base 5.

Then, by driving the engine 5, the rotational force thereof is transmitted to the vibration oscillating device 2 via a centrifugal clutch and a belt transmission mechanism (not shown), whereby vibration is generated in the vibration oscillating device 2. Is transmitted to the compaction plate 1. The rolling compaction plate 1 that has been subjected to the vibration compacts the road surface or the like while self-propelled on the road surface or the like. At this time, the operator operates the operation handle 6 to steer or turn the machine body.

[0005]

[Problems to be solved by the device]

 By the way, this type of vibration compactor is used for auxiliary work of large rollers, paving work in a narrow space, or partial repair paving work, but since the rolling plate 1 is usually made of steel plate, The impact sound is generated when the road surface or the like is compacted by the vibration of the pressure plate 1. For this reason, it is subject to noise pollution when used in urban areas or at night.

Therefore, conventionally, a cushioning material such as urethane rubber is lined on the lower surface (surface contacting the road surface) of the compaction plate 1 (see Japanese Utility Model Laid-Open No. 58-171904 and Japanese Utility Model Laid-Open No. 2-73404). ), There is one in which the compaction plate 1 itself is formed of a vibration damping steel plate to reduce the impact noise during compaction work, but it has not reached the stage of significantly reducing the noise. is the current situation.

[0007] Therefore, an object of the present invention is to provide a vibration compactor capable of sufficiently reducing the impact noise caused by the rolling plate generated during the compaction work.

[0008]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the invention of claim 1 comprises a rolling compaction plate equipped with an oscillating device, and an engine mounted and fixed on an engine stand fixed on the rolling compaction plate via a buffer. In such a vibration compactor, a soundproof cover that covers the periphery of the compaction plate and has its lower surface grounded to a road surface or the like is detachably provided to the machine body.

According to the invention of claim 2, in addition to the invention of claim 1, the lower surface of the rolling plate is lined with a shock absorbing material.

[0010]

[Action]

 According to the first aspect of the present invention, the impact noise caused by the rolling plate is absorbed by the soundproof cover and is greatly reduced.

According to the second aspect of the present invention, it is possible to further reduce the impact noise caused by the rolling plate.

[0012]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a vibration compactor equipped with a soundproofing device according to an embodiment of the present invention.

This vibration compactor includes a compaction plate 1 made of a steel plate, a vibrating device 2 mounted and fixed on the front part of the compaction plate 1, similarly to the conventional example, and a shock absorbing rubber or the like on the compaction plate 1. An engine base 4 fixed via the body 3 and an engine 5 mounted and fixed on the engine base 4 are provided, and the rotational force of the engine 5 is driven by a centrifugal clutch and a belt transmission mechanism (not shown). The vibration is transmitted to the vibration generating device 2, whereby vibration is generated in the vibration generating device 2, and the vibration is transmitted to the pressure roller 1.

Therefore, in this embodiment, as shown in FIG. 1, a soundproof cover 7 which covers the periphery of the pressure plate 1 and whose lower surface is grounded to a road surface or the like is detachably attached to the machine body.

Therefore, in this embodiment, the cover mounting frame 8 is provided on the machine body side. As shown in FIG. 2, the cover mounting frame 8 is formed in a rectangular shape that surrounds the periphery of the rolling plate 1, and is provided with a predetermined distance from the bottom plate portion 1a of the rolling plate 1 and the sloping rising portions before and after the rolling plate 1. It is fixed to the left and right sides of 1b and 1c by welding or the like.

U-shaped notches 9 for mounting the soundproof cover 7 are formed on both left and right frames of the cover mounting frame 8.

As shown in FIG. 3, the soundproof cover 7 has a rectangular penetrating portion 10a that can be inserted and removed around the compaction plate 1 from above the machine body, and has a sled-shaped rising portion 10b formed at the front portion. A grounding plate 10 made of a damping plate, a sponge-like sound absorbing member 11 having a predetermined width and height adhered to the upper surface of the grounding plate 10 with an adhesive or the like, and on the left and right frame portions of the sound absorbing member 11. L-shaped steel plate 12 adhered to the inner surface and the inner surface, steel plate 13 adhered to the upper surfaces of both front and rear frame portions, and a sponge-like sound absorbing portion having a predetermined thickness adhered to the entire inner peripheral surface of the soundproof member 11. It is made of material 14 and is formed in a box shape with a bottom.

Mounting pins 15 are provided on the inner surfaces of the left and right frame portions of the soundproof cover 7 so as to be engageable with and disengageable from the notches 9 of the cover mounting frame 8.

Next, the operation of the above embodiment will be described.

First, when the soundproof cover 7 formed as described above is mounted on the machine body, the soundproof cover 7 is inserted from the upper part of the steering handle 6 of the machine body, and the mounting pins 15 of the soundproof cover 7 are attached to the cover mounting frame. The notch 9 of 8 is engaged. In this state, the soundproof cover 7 covers the periphery of the pressure plate 1 as shown in FIG. 1, and the lower surface is grounded to the road surface or the like.

At this time, the sound absorbing member 14 on the inner peripheral surface of the soundproof cover 7 is mounted on the outer peripheral surface of the cover mounting frame 8 so as to maintain the pressure density. Further, since the outer peripheral surface is covered with the sound absorbing member 11 having a predetermined width, the impact noise caused by the pressure roller 1 is absorbed by the sound absorbing member 11 and is sufficiently reduced.

Therefore, it is possible to significantly reduce the impact noise as compared with the case where the soundproof cover is not attached.

Further, the soundproof cover 7 can be easily removed from the cover mounting frame 8 by removing the mounting pin 15 from the notch 9 of the cover mounting frame 8, so that the soundproof cover 7 can be removed depending on the situation of the work site. The body can also be used by removing the cover 7.

Further, if a cushioning material such as urethane rubber is subjected to a lining process on the lower surface of the pressure roller 1 and the soundproof cover 7 is mounted around the pressure roller 1 subjected to the lining, the impact noise can be further reduced. Can be achieved.

[0026]

[Effect of device]

 As is clear from the above description, according to the configuration of the present invention, it is possible to significantly reduce the impact noise generated by the pressure roller during compaction work.

[Brief description of drawings]

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

FIG. 2 is a perspective view showing a mounted state of a cover mounting frame according to an embodiment of the present invention.

FIG. 3 is a perspective view showing a partially broken state of the soundproof cover according to the embodiment of the present invention.

FIG. 4 is a perspective view showing a conventional example.

[Explanation of symbols]

 1 Rolling Plate 2 Vibration Device 4 Engine Stand 5 Engine 6 Operating Handle 7 Cover Mounting Frame 8 Soundproof Cover

Claims (2)

[Scope of utility model registration request] 1. A vibration compactor comprising a rolling compaction plate equipped with a vibrating device and an engine mounted and fixed on an engine stand fixed to the rolling compaction plate via a cushioning body, the periphery of said compacting plate. A soundproofing device for a vibration compactor, characterized in that a soundproofing cover that covers the vehicle and its lower surface is grounded to the road surface is detachably attached to the machine body. 2. A soundproofing device for a vibration compactor according to claim 1, wherein a cushioning material is lined on the lower surface of the pressure plate.