建機・重機・高所作業車・アタッチメント・機械部品 建設技術・工法
CHOWA KOGYO

基本情報

屋内小間番号
06-60
所在地
〒141-0032 東京都品川区大崎1-6-4
電話番号
03-3779-7871
ホームページアドレス

出展製品・サービス

Product Guide of CHOWA KOGYO

製品・サービス説明

Our main product is Vibro-hammers (vibratory pile driving machine).
The company boasts the largest share of the domestic manufacturing market and offers a full lineup of hydraulic, electric, and excavator-mounted models. First, the SR and HV series of hydraulic Vibro-hammers are available, with the SR series being the mainstay product. The SR series is our flagship product, boasting compact size, light weight, and large vibratory force, and has become an indispensable part of pile-driving construction, with cumulative shipments exceeding 400 units in the series. The new model ZV-35H, which surpasses the SR series, will be unveiled at this exhibition.
Next, we introduce electric Vibro-hammers. Starting with the pioneering CV series of vibro-hammers, we have the ZERO-VR/MR lineup. The beauty of this pile driver is its simple structure and durability. They have enjoyed a certain level of popularity since their debut, and their sales volume has been increasing year by year. Some models in this series can handle steel pipe piles with a diameter of 2300 mm, and are widely used in large-scale construction projects.
Finally, we introduce the excavator-mounted type, which is available in the LHV and CHV series and the SR-04P type. The compactness of this excavator-mounted type allows it to be self-propelled, making it suitable for urban construction and construction in narrow areas (CHV only).
We also manufacture other types of pile-driving machines that can be used for various construction methods, such as auger combination types for special construction methods and interlocking vibrators for the Embedded Steel Plate Cellular Method.
In addition, the “Vibro-hammer with Water Jet Cutter” method is best suited for driving into hard ground, and Water Jet Cutters are available. This is also one of our main products with a full lineup.

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Vibro-hammer Method

製品・サービス説明

We would like to introduce a special construction method using a Vibro-hammer.
First is the Vibro-hammer with Water Jet Cutter method. This method combines a Vibro-hammer and a Water Jet Cutter that injects high-pressure water to drive a pre-existing pile into hard ground. This method enables quick and reliable installation even in rock layers or gravel layers mixed with cobble stones, which are difficult to install with other methods or require a long installation time.
Next is the RS Plus® method. The RS-Plus® method is characterized by the use of cement milk to form an enlarged rooting zone at the pile tip, which provides higher bearing capacity than that of the pile alone. The construction procedure is as follows: first, the pile is driven using the Vibro-hammer method with Water Jet Cutter, then the Water Jet is switched to the cement milk Jet to form an enlarged rooting zone at the pile tip, and if necessary, the pile circumference is also filled with cement milk to complete the process. This method was developed based on the results of joint research by the Port and Airport Research Institute, Nippon Steel Corporation, and Chowa Kogyo, and is now attracting attention as a construction method that achieves low-noise, low-vibration construction and high bearing capacity.
Finally, there is the Embedded Steel Plate Cellular Method. In this method, pre-assembled cells are driven directly into the seabed. The development of an interlocking system that synchronizes the operation of several Vibro-hammers and evenly transmits powerful vibrational energy to the cells has made possible the casting of integrated cells, which had been considered difficult. This method solves all the problems of the conventional steel plate cell method.

Chowa Kogyo is actively promoting the development of new pile driving methods on a daily basis as well as advancing its Vibro-hammer technology.

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CHOWA MACHINE MONITERING SYSTEM

製品・サービス説明

The CHOWA Machine Monitoring System is a system that monitors the operating status and condition of a machine (our product: Vibro-hammer) in real time, detects any abnormalities, and sends out alerts. This system enables us to monitor the operating rate of the machine, which is useful for improving productivity and preventing sudden accidents of the equipment. Specifically, the system monitors the following three items;
(1) Unit data (engine operating data, hydraulic oil information)
(2) Remote control operation system (operation, stop, frequency Vol, vibration Vol, chuck open/close)
(3) Driving information (motor pressure, vibration frequency, notes, etc.)

The advantages of monitoring (1) to (3) are as follows;
a) Monitoring of operating hours and wear and tear of equipment due to the site environment will enable proposals on the best timing for parts replacement.
b) Prevent sudden breakdowns by monitoring the amount of hydraulic oil contamination, which is said to be 80% of the causes of hydraulic system problems, and by monitoring changes in the temperature of the oil.
c) being able to check the performance of the Vibro-hammer in advance, it is possible to suggest the need for maintenance service.

This system is designed to make users more comfortable and prolong their use of Vibro-hammers.

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