JPH0723609B2 - Vibration crawler type compactor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Object of the Invention <Industrial field of application> The present invention has a crawler-type self-propelled vehicle equipped with a vibration exciter, which enables high efficiency and economic efficiency in deep layers of the ground. The present invention relates to a vibrating crawler type compaction device that enables construction with a compaction effect.

<Prior Art> Conventionally, there is a method of using a compaction roller or a vibrating roller as a means for compacting the upper layer of the ground.

The effect of compaction of the ground by this kind of means is at most about several tens of centimeters underground, so in order to create a thick compacted ground, remove the sand to a thickness of several tens of centimeters and transfer the surface. Pressing, and when the compaction of all the sections is completed, return to the first process again, put the earth and sand on the compaction surface and put back the compaction process again. There is a lack of effective operation of. Further, since the ground contact area is linear, the weight of the airframe is large, and it is difficult to increase the compaction efficiency of the ground because it is impossible to mount a vibrator that generates a large exciting force in comparison with this.

Therefore, provide a bumper on the bottom of the tamper plate, install a large-capacity exciter here, hang it with a crane, and lift it up every time the compaction work on the specific ground is completed, and move it to the adjacent position. Repeatedly to make the compaction effect effectively on the deep ground, or to perform predetermined spraying or water injection at the time of compaction construction, or to connect a wire to the tamper and end compaction construction or It has been proposed that a compaction winch or a self-propelled vehicle should be used for towing and moving (see Japanese Patent Application No. 61-111790), and it is possible to obtain the desired effect.

<Problems to be solved by the invention> By the way, the above-mentioned tamper equipped with a vibration oscillating device, that is, a vibro tamper, repeats moving to an adjacent area every time compaction construction of the specific ground is completed, thereby expanding a large area. Even if the compaction is performed uniformly, the vibration generator is normally stopped when the tamper is moved, so there is the inconvenience that the compaction is interrupted at least for the time required for the movement.In both cases, a winch for repeatedly moving the tamper is used. There was a problem that auxiliary equipment such as crawlers or cranes had to be operated. Therefore, by connecting a moving means to the tamper itself or by adding a vibro tamper function to the self-propelled vehicle, the volume of the equipment can be kept small, and the tamper can be moved freely while the vibrator is operating. It is possible to perform continuous compaction construction of the ground, and since the control operation is easy, the compaction of the ground can be achieved with deep compaction effect while maintaining high efficiency construction and bottom cost construction. It is an object of the invention to provide a device. Another object of the present invention is that the ratio of the self-weight of the device to the vibrating force of the vibro can be increased relatively easily according to the present invention. The purpose is to develop a device that enables compaction of the ground or high efficiency construction at the same depth.

(B) Configuration of the Invention <Means for Solving Problems> The vibrating crawler type compaction device of the present invention has the respective constituent features described below in order to achieve the above object.

(1) A vibrating crawler type compaction device, which is directly mounted with an on-frame exciter of a crawler type self-propelled vehicle.

(2) The vibration crawler type compaction device according to the above-mentioned item 1, wherein drive energy is supplied from a remote power unit to a self-propelled motor and an exciter through a flexible pipe.

(3) The vibration crawler type compaction device according to the above-mentioned item 2, wherein the remote power unit is provided with a traveling direction control means for the crawler type self-propelled vehicle.

<Operation> A large-capacity exciter, such as a vibrating force of several tens to hundreds of tens of tons, an acceleration force of several g to 10g, a vibration frequency of several hundreds of Hz, is installed above the crawler type striking device. Mount. However, if the ground contact area of the crawler shoe of the strike device is expanded accordingly, the ground pressure of the shoe at that time can be easily set to, for example, about 2.0 ton / m ² . If the space between the pair of crawler shoes is made slightly narrower than the width of the crawler shoes on one side, it is easy to wrap with the already constructed area during compaction construction. Since the capacity of the vibrator installed on this machine can be made extremely large with respect to the total weight of the vibration crawler body, the vibration force / total weight is dramatically increased compared to the case of a self-propelled vibration roller. However, it is possible to compact the ground deeply, and if the depth is the same, highly efficient construction can be realized. Also, since it is a self-propelled type, it is possible to move the crawler while operating the vibro mechanism, which enables more efficient compaction construction, and the auxiliary equipment for moving the damper is unnecessary. It has the advantage of not requiring a large work space.

The suspension mechanism and drive and bearing mechanism of the crawler shoe of the device of the present invention need to be sufficiently designed in consideration of vibration resistance and dustproof measures.

For the energy required for the drive mechanism of the vibro and the strike device, it is preferable to use electricity or compressed air as much as possible so as to prevent environmental pollution by operating the device. When it is used for compaction construction on the submarine ground, it is desirable that the vibro and the driving prime mover be water-proof, which further improves the dustproof effect.

The above-mentioned vibration crawler type compaction device may be operated by receiving drive energy from a power unit separately provided separately through an energy supply means,
In that case, it is also possible to remotely control the strike mechanism from the power unit side. As a result, the vibration of the vibro mounted on the device can be isolated from the power unit, which improves the durability of the unit. In this type of vibration crawler compactor, the power unit can be placed on a barge on the sea, and only the vibration crawler compactor can be submerged in the underwater to perform compaction work on the subseabed by remote control. Therefore, it does not require auxiliary equipment such as a crane ship, is low in cost, has high efficiency, minimizes oil pollution and seawater pollution, and enables the creation of excellent maneuverability on the ground.

<Embodiment> FIG. 1 shows the overall configuration of an embodiment of the vibrating crawler type compacting device of the present invention and a state of compacting the submarine ground by the vibrating crawler type compacting device. Is a schematic side view, (b) is a front view, and FIG. 2 (a), (b)
1 is an enlarged side view of a crawler traveling mechanism of a vibration crawler type compaction device and a schematic cross-sectional view thereof, in which 1 is a crawler type self-propelled vehicle, 2 is its frame, and at its front and rear ends in the traveling direction, As shown in FIG. 2 (a), the driving wheel and the driven wheel are pivotally supported, and the wide W crawler shoe 3 is suspended between them.

A pair of the above-mentioned crawler shoes 3 are provided symmetrically with respect to the crawler running center line [see FIG. 1 (b)], and both crawler shoes are independently driven.

The interval S <W between the inner edges of the width W of the crawler shoes 3 sandwiching the frame 2 is satisfied. The vibrator 4 is mounted on the upper part of the frame 2 by utilizing the space of the space S. Further, it goes without saying that the object can be achieved even if the exciter is mounted at the center of a frame of a type in which both outer side portions of the crawler shoe 3 are connected and erected. Further, in this embodiment, the vibrating unit 4 is shielded from the outside by a watertight means 5. Referring again to FIG. 1 (a), the energy for moving the crawler traveling mechanism and the prime mover of the exciter 4 is supplied from a separately provided power unit 6 by a flexible energy supply means (pipe) 7. In the case of the present embodiment, both are driven by electric power, but drive means for a prime mover using compressed air can also be adopted for compaction construction on land.

Reference numeral 8 is a barge floating on the surface of the water. The power unit 6 is loaded on the barge 8, and energy can be supplied from the power unit 6 to the vibrating crawlers, and the drive and drive direction of each crawler shoe 3 can be remotely controlled. Reference numeral 9 denotes a submarine ground, which controls the device on the barge 8 so as to move the crawler strike device along with it while exciting the exciter 4 for compacting construction of rubble, landfill, etc. For example, the vibration of the vibration crawler is not transmitted to the power unit 6, and the failure rate of the unit is reduced. The vibration force / self-weight ratio can be significantly increased compared to the conventional self-propelled vibrating roller, so a deep compaction effect can be obtained, and since it is self-propelled, continuous compaction is possible and another movement High-efficiency construction and low-cost construction are possible without the need for equipment.

At that time, mutual vertical vibrations are generated between the crawler shoe 3 and the frame 2 due to the excitation of the vibration generator 4, and therefore the crawler shoe 3 is suspended by the crawler shoe 3 due to the vibration of the frame 2. It is desirable to adopt a mechanism such as a high rib and a deep receiving groove so that the two can be securely engaged with each other so as not to come off from the suspension means during traveling [see FIG. 2 (b)].

3 and 4 show the compaction action of the ground according to the above-mentioned embodiment, and FIG. 3 (a) shows the vibration pattern of the vibration exciter 4 at the time t in the x-axis direction. , The downward swing of the exciter in the y-axis direction. On the other hand, in FIG. 3 (b), when the magnitude of the compaction effect is taken in the y-axis direction with the time axis in the x-axis direction as well, the compaction effect of the ground and the frequency of the vibration exciter 4 are shown. Will be shown. That is, it can be seen that the compaction effect occurs only when the acceleration of the vibrator 4 is downward, and the effect is obtained by adding it to the ground.

FIG. 4 shows a step of compacting the ground by the vibrating crawler of the present embodiment. FIG. 4 (a) is a side view of the vibrating crawler 4 for exciting the exciter 4 to vertically vibrate to compact the ground ( While driving the crawler shoe 3 in the direction of the arrow while moving the same ground three times), the vibration crawler advances linearly with respect to the ground,
Indicates a self-propelled state.

(B) is the front view, and as a result, the ground is the shoe 3
A section similar to the width W of the ground contact surface is compacted (depth of several meters), but at this time, the ground of width S remains uncompacted. It should be noted that compaction of the edge portion of the shoe 3 on the ground contact surface side cannot be said to be sufficient.

(C) is self-propelled and retreats after completion of one line while carrying out compaction construction, and at that time, pulling it close to lap the ground contact surface of the shoe 3 for about 30 cm with respect to the step (b), and to the ground Produces an even compaction effect.

(D) When the ground compaction construction due to retreat ends for a time and moves forward again, the width of the shoe 3 is adjusted to lap the ground contact surface of the shoe 3 for the step (c) by about 30 cm.

As described above, in order to carry out the process described above, the relationship between W and S is subject to some restrictions.

In this embodiment described above, the vibrating crawler type compaction device used exclusively for the improvement work of the water (sea) bottom ground, and its operation and effect have been described. It is also fully used when used for compaction construction.

At this time, when the watertight means 5 is applied to the vibration generator 4, it also functions as a vibration sound blocking mechanism of the vibrator. According to the present embodiment as described above, it is said that (1) traveling on land, (2) trafficability, (3) position control are easy, and quality control of compaction construction is easy. effective. For the actions and effects of other points, refer to the <Action> section described above.

(C) Effects of the Invention According to the vibrating crawler type compaction device of the present invention, (1) it is self-propelled and can move while performing compaction construction, so it is highly efficient, and (2) it is more efficient than the vibrating roller. Swing force /
Since its own weight is dramatically large, it is possible to perform compaction down to a deep layer, and if the depth is the same, highly efficient construction is possible. (3)
In the case of onshore construction, crawler cranes, winches and other incidental equipment for tamper movement are not required, and a crane ship is not required for offshore construction, so in combination with the conditions described in (1) and (2) above. In addition to enabling low-cost construction, (4) On-shore construction is as described in (3), so position control is easy and the work space can be reduced. The action and effect cannot be achieved.

[Brief description of drawings]

FIG. 1 shows the overall construction of an embodiment of a vibrating crawler type compacting device of the present invention, and the state of compacting construction of a water bottom ground by the crawler, and FIG. 2 is an enlarged side view of a traveling mechanism of the vibrating crawler and A cross-sectional view of the main part thereof, FIG. 3 shows the relation between the operation of the vibrator and the compaction action, and FIG. 4 shows the work process sequence of the soil consolidation using the present vibration crawler. 1 ... crawler striking device, 2 ... frame, 3 ... crawler shoe, 4 ... vibrator, 5 ... watertight means, 6 ... power unit, 7 ... flexible energy supply pipe, 8 ... Barge.

Claims (3)

[Claims] 1. A vibrating crawler type compaction device in which an exciter is directly mounted on a frame of a crawler type self-propelled vehicle. 2. A vibrating crawler type compactor according to claim 1, wherein drive energy is supplied from a remote power unit to the self-propelled motor and the exciter through a flexible pipe. 3. The vibration crawler type compaction device according to claim 2, wherein the remote power unit is provided with running control means for the crawler type self-propelled vehicle.