JPS63167805A - Vibro-crawler type compactor - Google Patents

Abstract

PURPOSE:To raise the efficiency of operation by a method in which drive energy is supplied through a flexible pipe form a remote-control power unit to a self-propelling prime mover and a vibrator, and the construction work is performed by remote-control operation. CONSTITUTION:A vibro-crawler type rammer consists of a crawler-type self-propelling vehicle 1 with a pair of crawler shoes 3 of a wide width, having a vibrator 4 on its frame 2, and a power unit 6 on which a barge 8 floated on water is mounted. In the unit 6, the vibrator 4 is operated by using electricity or compressed air and the operation and driving direction of the shoes 3 are controlled on a remote control basis. The vibrator 4 is excited to compact rubble and soil used in reclamation on the bottom ground 9 under water, and the traveling of the crawler 1 is controlled from the barge. Highly efficient and low-cost constructure work can thus be attained.

Description

[Detailed Description of the Invention] (a) Purpose of the Invention <Industrial Application Field> The present invention provides a crawler-type self-propelled vehicle equipped with an exciter and capable of driving deep underground while maintaining high efficiency and economical efficiency. This invention relates to a vibrating crawler type compaction device that enables construction with effective compaction.

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

The effect of compacting the ground using this type of method only extends to several tens of depths underground, so in order to create thick compacted ground, the earth and sand must be removed to a thickness of several tens of depths, and the surface of the soil must be rolled over. There is no choice but to adopt a method in which the compaction process is repeated once the compaction of all sections has been completed, the process is returned to the beginning, and the compaction process is repeated again by adding soil and sand to the compaction surface. There is a lack of effective operation. In addition, although the ground contact area is linear, the weight of the machine is large, and it is not possible to mount a vibrator that generates a large vibration force, making it difficult to improve the efficiency of soil compaction. - A large-capacity exciter is mounted on the uneven surface of the bottom of the plate, which is suspended by a crane and lifted each time compaction work is completed on a specific ground, and then moved to an adjacent position repeatedly. The compaction effect can be effectively applied to the deep ground, or the specified water sprinkling or water injection can be carried out during compaction work, or the tamper can be connected to a wire to ensure that the compaction effect is effectively applied to the deep ground. It has been proposed to perform hardening work and tow and move it using a 59-inch vehicle or a self-propelled vehicle (see Japanese Patent Application No. 111790/1983), which has made it possible to obtain the desired effect.

<Problems to be Solved by the Invention> By the way, the above-mentioned vibrator-mounted tamper 1, that is, the vibro tamper, repeatedly moves to an adjacent area every time compaction of a specific ground is completed, and is used to spread the tamper over a wide area. The area is compacted uniformly, but normally when the tamper is moved, the operation of the exciter is stopped, so there is an inconvenience that the compaction work is interrupted at least for the time required for the movement, and in both cases, the tamper is moved repeatedly. There were problems such as the need for additional equipment such as winches, crawlers, or cranes to be operated. Therefore, by combining a transportation means with the tamper itself or attaching a vibrotamper function to a self-propelled vehicle, the volume of the equipment can be reduced, and the tamper can be removed while the exciter is in operation. The ground can be moved freely, allowing continuous compaction of the ground, and because control operations are easy, the ground can achieve deep compaction effects while maintaining high efficiency and low cost construction. It is an object of the present invention to provide a compaction device. Another object is that according to the present invention, it is possible to relatively easily increase the ratio between the self-weight of the device and the vibratory force of the vibro, so that it can reach a deeper layer than the known self-propelled vibrating roller. The objective is to develop equipment that can compact the ground or perform highly efficient construction at the same depth.

(B) Structure of the Invention (Means for Solving Problems) The vibrating crawler compaction device of the present invention has the following constituent elements in order to achieve the above-mentioned object.

(1) A vibrating crawler type compaction device characterized by having an exciter mounted directly on the frame of a crawler type self-propelled vehicle.

(2) The vibratory crawler compaction device according to item 1, wherein driving energy is supplied to the self-propelled prime mover and the vibrator from a remote power unit via a flexible pipe.

(3) The vibrating crawler type compaction apparatus according to item 1 or 2 above, wherein the remote power unit is also provided with means for controlling the running direction of a crawler type self-propelled vehicle.

Effect> A large-capacity exciter is installed above the crawler two-direction device, for example, with an excitation force of several tens of tons to over a hundred tons.

It is equipped with a vibro mechanism with an acceleration force of several g to 10 g and a vibration frequency of several hundred Hz. However, if the ground contact area of the crawler shoes of the strike device is increased accordingly, the ground pressure of the shoes can be easily set to, for example, about 2.0 ton/m2. Note that if the distance between the pair of crawler shoes is made slightly narrower than the width of one crawler shoe, it will be easier to wrap the area with the already constructed area during compaction construction. This type of vibrating crawler can have an extremely large capacity of the mounted exciter relative to the total weight of the aircraft, so the excitation force/total weight is dramatically greater than that of self-propelled vibrating rollers. This makes it possible to compact the ground deeper, and if the depth is the same, highly efficient construction can be achieved. In addition, since it is self-propelled, the crawler can be moved while operating the vibro mechanism, enabling even more efficient compaction work, and further eliminating the need for incidental equipment to move the damper. It has the advantage of not requiring a large work space.

The suspension mechanism, drive, and bearing mechanism of the crawler shoe of the apparatus of the present invention must be designed with sufficient vibration resistance and dust prevention measures taken into consideration.

It is preferable to use electricity or compressed air as much as possible for the energy required for the drive mechanism of the vibro and strike device, so as not to cause environmental pollution by operating the device. When used for compaction work on underwater ground, it is desirable that the vibro and driving motor be waterproof, which further improves the dust-proofing effect.

The above-mentioned vibratory crawler compaction device may be operated by receiving driving energy from a separately installed power unit via an energy supply means. It can also be controlled. This makes it possible to isolate the vibrations of the vibro mounted on the device from the power unit, thereby improving the durability of the unit. With this type of vibratory crawler compaction equipment, the power unit is placed on a purge at sea, and only the vibratory crawler compaction equipment is submerged on the underwater floor, making it possible to perform compaction work on submerged ground by remote control. To achieve this, it is possible to create underwater ground with good mobility at low cost and with high efficiency without requiring incidental equipment such as a crane ship, while minimizing oil pollution and seawater pollution.

<Example> Fig. 1 shows the overall configuration of an embodiment of the vibrating crawler type compaction device of the present invention and the compaction construction state of underwater ground by the vibrating crawler type compaction device, and (a) 2(b) is a schematic side view, FIG. 2(b) is a front view, and FIGS. 2(a) and 2(b) are enlarged side views and a schematic cross-sectional view of the crawler traveling mechanism of the vibrating crawler compaction device. The crawler type self-propelled vehicle 2 has a frame, and the front and rear ends of the frame in the running direction support a drive shaft and a driven wheel as shown in FIG. The stake is passed.

The above crawler shoes 3 are provided as a pair symmetrically with respect to the center line of crawler travel [see FIG. 1(b)], and both crawler shoes are driven independently.

The distance S<W between the inner edges of the width W of the crawler shoes 3 sandwiching the frame 2 is satisfied. The exciter 4 is mounted on the upper part of the frame 2 using the space of the interval S.

It goes without saying that the purpose can be achieved even if the exciter is mounted in the center of a frame constructed by connecting the outer side portions of the crawler shoes 3. In this embodiment, the periphery of the exciter 4 is isolated from the outside world by a watertight means 5. Figure 1 again (
Referring to a), the energy for moving the crawler traveling mechanism and the prime mover of the exciter 4 is supplied by a flexible energy supply means (pipe) 7 from a separately installed power unit 6. In the case of this embodiment, both are driven by electric power, but if compaction work is carried out on land, a driving means of a prime mover using compressed air can also be adopted.

8 is Purge floating on the water surface, and power unit 6 is at 22.
It is possible to load energy from there to the vibrating crawler and to remotely control the drive and drive direction of each crawler shoe 3. Reference numeral 9 indicates underwater ground, and while exciting the exciter 4 for compaction work of rubble, reclaimed earth, etc., a device is controlled on the purge 8 so as to move the crawler direction device accordingly. Ba,
The vibration of the vibrating 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 by 8- compared to conventional self-propelled vibrating rollers, resulting in deep compaction effects, and since it is self-propelled, continuous compaction is possible. Furthermore, there is no need for separate moving equipment, allowing for highly efficient construction and low cost construction.

At this time, mutual vertical vibration occurs between the crawler shoe 3 and the frame 2 based on the excitation of the vibrator 4. Therefore, as a suspension mechanism for the crawler shoe 3, the crawler shoe 3 is It is preferable to employ a mechanism such as the one shown in FIG. 2(b) to ensure the engagement between the two by means of high ribs and deep receiving grooves so that the suspension does not come off during traveling.

3 and 4 show the compaction effect of the ground according to the above-mentioned embodiment, and FIG. 3(a) shows the vibration pattern of the vibrator 4, which shows the time t in the X-axis direction. , the magnitude of the downward amplitude of the exciter in the y-axis direction. On the other hand, in Fig. 3(b), when the time axis is similarly set in the X-axis direction and the magnitude of the compaction effect is taken in the y-axis direction, the compaction effect of the ground and the frequency of the vibration exciter 4 are calculated. It shows the relationship between

That is, it can be seen that the compaction effect occurs only when the acceleration of the exciter 4 is downward, and that the compaction effect is added to the ground to produce the effect.

FIG. 4 shows the ground compaction process using the vibratory crawler of this embodiment, and (a) is a side view in which the exciter 4 is excited to generate vibrations in the vertical direction to compact the ground ( For example, the crawler shoe 3 is driven in the direction of the arrow while moving on the same ground three times, and the vibrating crawler moves linearly against the ground.
Indicates a state in which the vehicle is running on its own.

(b) is its front view; as a result, the ground is
Compaction is performed on a section (with a depth of several meters) that approximates the width W of the ground contact surface, but at that time, the ground with a width S remains uncompacted. In addition, the compaction of the side edge portion of the ground contact surface of the shoe 3 cannot be said to be sufficient.

(c) is self-propelled and retreats after completion of the compaction work, and at that time, the ground contact surface of the shoe 3 is wrapped around 30 cm against the process (b), and it is placed against the ground. Produces an even compaction effect.

(d) When moving forward again after the ground compaction work has been completed by retreating, move the ground closer to the ground surface of shoe 3 (Q
) Wrap the same <30cm for the process.

As described above, in order to carry out the process described above, there are restrictions to the extent that the relationship between W and S holds true.

In this embodiment, we have described the vibrating crawler compaction equipment used in the improvement work of submerged (sea) ground, and its functions and effects. It is also fully effective when used in soil compaction construction.

At this time, if the exciter 4 is provided with a watertight means 5, it also functions as a vibration sound isolation mechanism of the vibrator.

As described above, this embodiment includes (1) non-land running, (
2) trafficability; (3) position control is easy; quality control of compaction construction is also easy;
There is an effect called. Regarding the functions and effects of other points, please refer to the section ``Effects'' mentioned above.

(C) Effects of the invention 11- According to the vibrating crawler type compaction device of the present invention, (1) it is highly efficient because it is self-propelled and can be moved while performing compaction work; Compared to this, the vibration excitation force/self-weight is dramatically larger, so it is possible to perform deep compaction, and high-efficiency construction can be performed at the same depth. Crawler cranes, winches, and other incidental equipment are not required, and offshore construction does not require a crane ship. This, together with the conditions described in (1) and (2) above, makes it possible to perform construction at low cost. .

(4) In construction on land, as mentioned in (3), the position can be easily controlled and the work space can be reduced, which is an effect that cannot be expected with conventional technology;
It will be effective.

[Brief explanation of the drawing]

Fig. 1 shows the overall configuration of an embodiment of the vibratory crawler type compaction device of the present invention and the compaction construction status of underwater ground by the crawler, and Fig. 2 shows an enlarged side view of the traveling mechanism of the vibratory crawler and A cross-sectional view of the main part, FIG. 3, shows the relationship between the operation of the vibrator and the compaction action, and FIG. 4 shows the sequence of work steps for soil compaction using this vibration crawler. 1... Crawler steering device, 2... Frame, 3
... Crawler shoe, 4 ... Exciter 1.5.
... Watertight means, 6. ... Power unit,
7...Flexible energy supply pipe, 8...Purge.

Claims (1)

[Claims] 1. A vibrating crawler type compaction device characterized by having an exciter mounted directly on the frame of a crawler type self-propelled vehicle. 2. The vibratory crawler compaction device according to claim 1, wherein driving energy is supplied to the self-propelled prime mover and the vibrator from a remote power unit via a flexible pipe. 3. Claim 1 in which the remote power unit is also provided with means for controlling the running direction of a crawler-type self-propelled vehicle.
The vibrating crawler compaction device according to item 1 or 2.