JPH09105135A - Damper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to comply with an inclined surface of a ground to be compacted or the like by providing a bearing means which supports a compaction board so that it may slant to a specified state and a return means which returns the compaction board slanted with the bearing means to the specified state. SOLUTION: An expansion spring 3 is fixedly provided in such a fashion that it may be placed in parallel to the outward periphery of the tip 2a of a power mechanism 2 and one end of the spring 3 may be provided at four locations with a similar spacing to a flange 2b projectingly provided outside the power mechanism 2 while the other end is fixed with the outer periphery of the compaction board 1, thereby coating the area with a protection cover 3a. Therefore, the compaction board 1, which comes in contact with the tip 2a of the power mechanism 2 by way of an oil film, is supported tiltably with a specified state while the compaction board 1, which has tilted, is returned to the specified state with ease. This construction makes it possible to cope with an inclined surface of the ground or the like to be compacted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tamper, and more particularly to a tamper which can easily cope with a ground inclination for compaction.

[0002]

2. Description of the Related Art Conventionally, backfill, embankment, foundation ground,
When compacting bentonite, asphalt mixture, etc., a tamper (Tamper) is widely used, which changes the rotational power of the drive motor into a reciprocating motion by a crank and continuously vibrates the compacting plate to compact the ground. ing. In recent years, a tamper has been attached to the tip of the arm of a hydraulic excavator to improve the workability of compaction by vibrating with the tamper and pressing with the hydraulic excavator, and to the tip of the arm of the hydraulic excavator. It has been proposed that a plurality of tampers are attached in parallel and the ground for compaction is uniformly compacted regardless of the presence of unevenness.

[0003]

However, in any of the hydraulic excavators described above, the compaction plate of the tamper that directly abuts against the ground or the like does not have a structure in which it can be freely tilted. In order to deal with the inclined surface of the ground for compaction, it is necessary to change and adjust the direction (angle) of the tamper attached to the tip of the arm by expansion and contraction control of the hydraulic cylinder, etc. There is a drawback that it requires various operations.

The present invention focuses on the above-mentioned drawbacks of the prior art and solves this problem. The object of the present invention is to easily cope with an inclined surface of the ground or the like for compaction, and yet to ensure the compaction. It is to provide a tamper that can be solidified.

Another object of the present invention is, in addition to the above objects,
It is to provide a tamper that enables uniform compaction of an object to be compacted.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above objects, and its gist is to provide a compaction plate that directly abuts against an object to be compacted, such as ground or concrete mixture, A tamper comprising a power mechanism for vibrating the compaction plate, the bearing means for supporting the compaction plate so as to be tiltable with respect to a predetermined state, and the compaction plate tilted by the support means. The tamper further comprises a returning means for returning to the state.

According to this aspect, the support means tiltably supports the compaction plate directly contacting the object to be compacted with respect to the predetermined state, and the return means tilts the compaction plate by the support means. Since the compaction plate is returned to the predetermined state, the compaction plate easily corresponds to the inclined surface of the compaction target, and thus the compaction target can be reliably compacted.

Another aspect of the present invention is the above-mentioned tamper, which is characterized in that a pressure sensor for measuring the degree of compaction of an object to be compacted is provided. According to this aspect, the compaction is performed by the pressure sensor. Since the degree of compaction of the object is measured, it is possible to uniformly compact the object to be compacted by performing the compacting operation while confirming the measured value.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION In the tamper of the present invention, the compaction plate directly abuts on an object to be compacted,
The support means described later supports the power mechanism so as to be tiltable with respect to a predetermined state, that is, when it comes into contact with a compaction object, it tilts in correspondence with the inclination and the like. It returns to a predetermined state by the returning means described later.

As the power mechanism, the rotary power of the drive motor is converted into a reciprocating motion by a crank to vibrate the compaction plate continuously, or the compaction plate is brought into contact with the surface of the compaction object. It is possible to use a suitable existing one such as one that is rotated.

As the supporting means, an inner surface corresponding to the rear surface of the outer surface of the compacting plate which directly contacts the object to be compacted is supported by the tip of the power mechanism so as to be tiltable with respect to a predetermined state. Any structure may be used as long as it can be obtained. Specifically, for example, a structure in which the center of the inner surface of the compaction plate is simply supported so as to be tiltable can be appropriately used. An expansion spring, a rubber ring, or the like can be used as the returning means.

Further, the supporting means and the returning means are not limited to those constituted by separate mechanisms, and for example, a sliding contact having an uneven curved surface for allowing the compaction plate to tilt with respect to a predetermined state. A contact surface is provided on each of the compaction plate and the tip of the power mechanism to which the compaction plate is attached to form a part of the supporting means, and an expansion spring is provided so that the compaction plate can be tilted. At the same time, it is also possible to configure a returning means also serving as a part of the supporting means so that the tilted compaction plate 1 can be returned to a predetermined state.

Here, the tilting angle allowed by the above-mentioned supporting means and returning means, that is, the tilting angle capable of returning is
Specifically, it is set so that it can be tilted within an angle range of ± 45 ° with respect to the axial direction of the power mechanism.

The pressure sensor has a suitable position that has the least obstacle to measure the degree of compaction of the object to be compacted, for example, between the compaction plate and the tip of the power mechanism (FIG. 3, reference numeral B).
Or between the tip portion and the flange for attaching the same (FIG. 3, reference numeral C), or between the respective compaction plates in a mode in which two compaction plates are stacked (FIG. 3, reference numeral A). It can be installed in

[0015]

Embodiments of the present invention will be described below with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

FIG. 1 (a) is a schematic vertical sectional view showing an embodiment of the tamper of the present invention, and FIG. 1 (b) is a schematic vertical section showing FIG. 1 (a) rotated by 45 ° about the vertical axis direction. Plan, Figure 1
(C) is a schematic cross-sectional view taken along the line I-I of FIG. 1 (b). FIG. 2 is a schematic side view showing a mode in which the tamper of FIGS. 1 to 3 is attached to the tip of the arm of a hydraulic excavator.
Furthermore, FIG. 3 is a schematic vertical sectional view showing other various embodiments of the tamper of the present invention.

A tamper 10 according to the present invention shown in FIGS. 1 (a) to 1 (c) is a wall surface ground such as a tunnel (object to be compacted).
A compaction plate 1 that directly abuts on the compaction plate 1, a power mechanism 2 that vibrates the compaction plate 1, and the compaction plate 1 and a tip portion 2a of the power mechanism 2 to which the compaction plate 1 is attached. A sliding contact surface (1b, 2a ') (a part of the support means) that allows the plate 1 to tilt with respect to a predetermined state, and the compaction plate 1 is tiltably supported, and the tilted compaction plate 1 is also supported. And a pressure sensor 4 mounted on the compaction plate 1.

The compaction plate 1 has its outer surface 1a directly contacting the ground and vibrates when the power mechanism 2 is activated.
An inner surface 1b that is a concave curved surface for contacting a distal end surface 2a 'provided as a convex curved surface on the distal end portion 2a of the power mechanism 2
Is provided as a sliding contact surface. Further, the above-mentioned pressure sensor 4 is provided in the center of the inner surface 1b, and the compaction work is performed while confirming the measurement value detected by this pressure sensor 4 by a monitor (not shown), thereby making the wall surface ground. Can be uniformly compacted.

The power mechanism 2 has an internal structure (not shown), but it is an existing one that changes the rotational power of the drive motor into a reciprocating motion by a crank and continuously vibrates the compaction plate. A tip portion 2a of the power mechanism 2 that contacts the inner surface 1b of the compaction plate 1 is provided as a sliding contact surface. The inner surface 1b, which is a concave curved surface provided in the compaction plate 1 described above, and the front end surface 2a 'provided on the front end portion 2a of the power mechanism 2 are in contact with each other with an oil film interposed therebetween.

The extension springs 3 are fixed at one end to four equally spaced flanges 2b projecting outward of the power mechanism 2 so that they are parallel to the outer periphery of the tip 2a of the power mechanism 2. At the same time, the other end is fixed to the outer periphery of the compaction plate 1 and covered with the protective cover 3a. As a result, the compaction plate 1 that is in contact with the tip portion 2a of the power mechanism 2 via the oil film can be tiltably supported with respect to a predetermined state, and the tilted compaction plate 1 can be easily placed in a predetermined state. Can be returned to.

The tamper 10 described above can be mounted on a hydraulic excavator 11 as shown in FIG. This hydraulic excavator 11 has a concrete mixer 11 for spraying.
b and pump means 11c for pumping concrete
And a spray nozzle 11e fixed to the tip of the arm 11a by a fixing fitting 11d. This allows the concrete spraying work and the compacting work to proceed simultaneously. In the hydraulic excavator 11 with the tamper 10 attached in this way, it is possible to easily cope with the inclination of the ground without requiring a complicated operation for changing and adjusting the direction (angle) of the tamper 10 attached to the tip of the arm 11a. Therefore, the compaction can be performed in any direction even in the tunnel, and the compaction workability can be further improved.

In the above embodiment, the compacting plate 1
The inner surface 1 b of the power mechanism 2 is a concave curved surface and the tip surface 2 a ′ of the tip portion 2 a of the power mechanism 2 is a convex curved surface, so that the compaction plate 1 and the tip portion 2 a of the power mechanism 2 slide against each other. As shown in FIG. 3, the inner surface 1b of the compacting plate 1 has a convex curved surface and the distal end surface 2a 'of the tip portion 2a of the power mechanism 2 has a concave curved surface, as shown in FIG. The sliding contact surface can also be configured. Further, the pressure sensor 4 for measuring the compaction degree of the compaction object is provided in the center of the inner surface 1b of the compaction plate 1 (FIGS. 1A and 1B). However, as shown by A to C in FIG. 3, between the compaction plate 1 and the tip portion 2a of the power mechanism (FIG. 3, reference numeral B), or the tip portion 2a and this. Between the flanges 2b for attaching (FIG. 3, reference numeral C), and the compaction plates 1 in a mode in which two compaction plates 1, 1 are stacked.
1 (FIG. 3, reference numeral A) or the like, and it is desirable to install it at an appropriate place where there is as little trouble as possible to measure the degree of compaction of the compaction object.

[0023]

According to the tamper of the present invention, the support means tiltably supports the compaction plate directly contacting the object to be compacted with respect to a predetermined state, and the return means tilts the support means to the above-mentioned clamping means. Since the compaction plate is returned to the predetermined state, the compaction plate easily corresponds to the inclined surface of the compaction target, and thus the compaction target can be reliably compacted.

Further, since the compaction degree of the compacted object is measured by the pressure sensor, it is possible to uniformly compact the compacted object by the compacting operation while confirming the measured value. .

[Brief description of the drawings]

FIG. 1 (a) is a schematic vertical sectional view showing an embodiment of a tamper of the present invention, and FIG. 1 (b) is 45 ° about (a) in the vertical axis direction.
A schematic vertical sectional view shown by rotating, (c) is II of (b)
It is a schematic cross-sectional view along a line.

FIG. 2 is a schematic side view showing a mode in which the tamper of FIG. 1 is attached to the tip of an arm of a hydraulic excavator.

FIG. 3 is a schematic vertical sectional view showing other various embodiments of the tamper of the present invention.

[Explanation of symbols]

 1 Compaction plate 2 Power mechanism 3 Expansion spring 4 Pressure sensor 10 Tamper 11 Hydraulic excavator

Claims (2)

[Claims] 1. A tamper comprising a compaction plate that directly abuts against an object to be compacted, and a power mechanism for vibrating the compaction plate, wherein the compaction plate is tiltably supported with respect to a predetermined state. The tamper, further comprising: a supporting means for operating the tamper and a returning means for returning the compaction plate tilted by the supporting means to a predetermined state. 2. The tamper according to claim 1, further comprising a pressure sensor for measuring the degree of compaction of the object to be compacted.