JP3154651B2 - Tampa - Google Patents

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 capable of easily coping with the inclination of the ground for compaction.

[0002]

2. Description of the Related Art Conventionally, backfilling, embankment, foundation ground,
In the compaction work of bentonite, asphalt mixture, etc., a tamper (Tamper) is widely used in which the rotational power of the drive motor is changed into reciprocating motion by a crank and the compaction plate is continuously vibrated to compact the ground etc. ing. In recent years, a tamper has been attached to the end of a hydraulic shovel arm to improve compaction workability by vibrating the tamper and pressing by a hydraulic shovel. There have been proposed ones in which a plurality of tampers are attached in parallel and the ground or the like to be compacted is compacted uniformly regardless of the presence of unevenness.

[0003]

However, in any of the above-mentioned hydraulic shovels, the compacting plate of the tamper that directly contacts the ground or the like is not structured to be able to freely tilt, and this compacting plate is used. In order to correspond to the inclined surface of the ground or the like to be compacted, the direction (angle) of the tamper attached to the tip of the arm must be changed and adjusted by controlling the expansion and contraction of the hydraulic cylinder, and such change adjustment is complicated. There is a disadvantage that it requires a complicated operation.

The present invention focuses on the above-mentioned drawbacks of the prior art and solves the problem. The purpose of the present invention is to easily cope with an inclined surface such as the ground to be compacted and to securely compact the ground. It is to provide a tamper that can be hardened.

[0005] Another object of the present invention is to provide,
An object of the present invention is to provide a tamper that enables uniform compaction of compacted objects.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned object, and the gist thereof is as follows.
A tamper comprising a compaction plate directly in contact with a compaction target and a power mechanism for vibrating the compaction plate, wherein the compaction plate is supported by a bearing means so as to be tiltable to a predetermined state , Return means for returning the tilted compacting plate to a predetermined state is formed so that the bearing means also serves as
The compaction in which the tip of the power mechanism contacts the tip
Complementary concave and convex curved surfaces are provided on the contact surface of the plate
Tampa, characterized in that the.

According to this aspect, the compacting plate directly contacting the compaction object is supported by the bearing means so as to be tiltable to a predetermined state, and the compacted plate tilted by the supporting means by the return means. Is returned to a predetermined state, so that the compaction plate can easily correspond to the inclined surface of the compaction target, and therefore, the compaction target can be securely compacted.

Another aspect of the present invention resides in the above-described tamper, wherein 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, the compaction operation can be performed uniformly while confirming the measured value, so that the compacted object can be uniformly compacted.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION In the tamper according to the present invention, the compacted plate directly contacts an object to be compacted.
The distal end of the power mechanism is tiltably supported by a support means to be described later with respect to a predetermined state, that is, when it comes into contact with a compaction target, it simply tilts in accordance with the tilt and the like, and this tilted state is The state is returned to a predetermined state by a return unit described later.

The power mechanism may be a mechanism that changes the rotational power of a drive motor into a reciprocating motion by a crank and continuously vibrates the compacting plate, or a device for bringing the compacting plate into contact with the surface of the compacting object. An existing suitable one such as one that is rotated in the above manner can be used.

As the bearing means, an inner surface corresponding to the outer surface of the compacting plate, which directly contacts the compacting object, is supported on the distal end portion 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 compacting plate is simply pivotally supported so as to be tiltable can be used appropriately. As the return means, a telescopic spring, a rubber ring, or the like can be used.

Further, the support means and the return means are, for example,
Support means by providing a sliding contact surface, which is an uneven curved surface for enabling the compacting plate to tilt to a predetermined state, at each of the compacting plate and the tip of the power mechanism to which the compacting plate is attached. And a telescopic spring, so that the compacting plate can be tiltably supported, and a part of the support means can return the tilted compacted plate 1 to a predetermined state. It is possible to constitute a return means which also serves as

Here, the tilt angle allowed by the above-described bearing means and return means, that is, the tilt angle that can be returned 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 is provided at an appropriate place where the degree of compaction of the compaction object is measured as little as possible, for example, between the compacting plate and the tip of the power mechanism (FIG. 3, reference number B).
Or between a tip thereof and a flange for attaching the same (FIG. 3, reference number C), or between each compaction plate in an embodiment in which two compaction plates are stacked (FIG. 3, reference number A). And so on.

[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. 1A is a schematic longitudinal sectional view showing one embodiment of the tamper of the present invention, and FIG. 1B is a schematic longitudinal sectional view showing FIG. 1A rotated by 45 ° about the vertical axis. Area view, FIG. 1
FIG. 2C is a schematic cross-sectional view taken along the line II of FIG. FIG. 2 is a schematic side view showing an aspect in which the tamper of FIGS. 1 to 3 is attached to the tip of an arm of a hydraulic shovel.
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 used for a ground on a wall surface such as a tunnel (an object to be compacted).
, A power mechanism 2 for vibrating the compaction plate 1, and a tip 2a of the compaction plate 1 and a power mechanism 2 for attaching the compaction plate 1; A sliding contact surface (1b, 2a ') (part of the bearing means) for enabling the plate 1 to be tilted with respect to a predetermined state, and the compacted plate 1 which is tiltably supported while the compacted plate 1 is tilted. And a pressure sensor 4 attached to the compacting plate 1.

The compacting plate 1 has an outer surface 1a directly in contact with the ground and vibrates when the power mechanism 2 is started.
An inner surface 1b having a concave curved surface for contacting a distal end surface 2a 'provided as a convex curved surface on a distal end portion 2a of the power mechanism 2.
As a sliding contact surface. The above-mentioned pressure sensor 4 is provided at the center of the inner surface 1b, and the compaction work is performed while confirming the measured value detected by the pressure sensor 4 with a monitor (not shown), whereby the wall surface ground is obtained. Can be uniformly compacted.

Although the internal structure of the power mechanism 2 is not shown, an existing mechanism that changes the rotational power of the drive motor into reciprocating motion by a crank and continuously vibrates the compacting plate is used. The tip 2a of the power mechanism 2 for contacting the inner surface 1b of the compacting plate 1 is provided as a sliding contact surface. The inner surface 1b, which is a concave curved surface provided on the compacting plate 1 described above, and the distal end surface 2a 'provided on the distal end portion 2a of the power mechanism 2 are in contact with an oil film therebetween.

One end of the extension spring 3 is fixed to four equally-spaced portions of a flange 2b projecting outward from the power mechanism 2 so as to be 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 compacting plate 1 and is covered by the protective cover 3a. Thereby, the compacting plate 1 which is in contact with the distal end portion 2a of the power mechanism 2 via the oil film can be supported so as to be tiltable with respect to a predetermined state, and the tilted compacting plate 1 can be simply brought into the predetermined state. Can be restored.

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

In the above embodiment, the compacted plate 1
The inner surface 1b of the power mechanism 2 has a concave curved surface, and the distal end surface 2a 'of the distal end portion 2a of the power mechanism 2 has a convex curved surface. 3, the inner surface 1b of the compacting plate 1 has a convex curved surface and the distal end surface 2a 'of the distal end portion 2a of the power mechanism 2 has a concave curved surface, as shown in FIG. The sliding contact surface can also be configured. The pressure sensor 4 for measuring the degree of compaction of the compacted object is provided at the center of the inner surface 1b of the compacted plate 1 (FIGS. 1A and 1B). However, as shown by A to C in FIG. 3, the space between the compacting plate 1 and the front end 2 a of the power mechanism (FIG. 3, reference numeral B) and the front end 2 a and the Each of the compaction plates 1 and 2 in a mode in which two compaction plates 1 and 1 are overlapped with each other (see FIG. 3, reference number C) for mounting the
1 (FIG. 3, reference number A), etc., and is desirably installed at an appropriate place where there is as little trouble as possible to measure the compaction degree of the compaction target.

[0023]

According to the tamper of the present invention, the compacting plate directly contacting the compaction object is supported by the supporting means so as to be tiltable to a predetermined state, and the return means is tilted by the supporting means. Since the compacted plate is returned to the predetermined state, the compacted plate can easily correspond to the inclined surface of the compacted object, and therefore, the compacted object can be securely compacted.

Further, since the degree of compaction of the object to be compacted is measured by the pressure sensor, the compaction of the object to be compacted can be uniformly performed by the compacting operation while confirming the measured value. .

[Brief description of the drawings]

FIG. 1A is a schematic longitudinal sectional view showing one embodiment of a tamper of the present invention, and FIG. 1B is a view in which FIG.
FIG. 4C is a schematic vertical cross-sectional view showing the state of FIG.
FIG. 2 is a schematic cross-sectional view along a line.

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

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Compaction plate 2 Power mechanism 3 Telescopic spring 4 Pressure sensor 10 Tamper 11 Hydraulic excavator

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho-61-202532 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E02F 3/36 E01C 19/34 E02D 3 / 046

Claims (2)

(57) [Claims] 1. A tamper comprising a compacting plate directly in contact with a compaction target, and a power mechanism for vibrating the compacting plate, wherein the compacting plate is tilted to a predetermined state by a support means. The bearing means is freely supported , and the bearing means also serves as a return means for returning the tilted compacting plate to a predetermined state.
And the tip of the power mechanism and the tip are
Complementary irregularities to the abutment surface of the compacting plate that abuts
A tamper characterized by having a curved surface . 2. The tamper according to claim 1, further comprising a pressure sensor for measuring a degree of compaction of the compaction target.