产品banner
Your current location : Home >> News >> Industry trends

Contact us

CHINA JIANGSU JUWEI MACHINERY CO.,LTD

Add:Western industrial Park, Dongtai City, Jiangsu Province, China

ZIP:224217

TEL:+86-515-85422299

FAX:+86-515-85422399

HOT LINE:+86 13661556708

WEB:www.jwhammer.cn

           www.jsjuwei.cn

EMAIL:jwjx@jsjuwei.cn

What you dont know about diesel hammer

2020-11-23

Diesel hammers are divided into guide rod type and cylinder type according to their structure. The piston is used as the hammer seat to press on the pile cap, and the cylinder is used as the hammer head to rise and fall along the two guide rods. During pile driving, firstly lift the pile to the pile frame in place, then put the diesel hammer on the pile top, lower the hook to lift the cylinder, and loosen the hook to let the cylinder drop into the plunger, so as to reduce the enclosed gas in the cylinder, and the cylinder continues to fall until the remote rod of the fuel pump on the elbow joint hammer seat outside the cylinder, the fuel pump will spray oil mist into the main cylinder, and the oil mist will touch the ignition point The high-temperature gas on the top will immediately ignite and explode. The explosive force will impact downward to make the pile move down and push upward to warm the cylinder. When the cylinder falls down again along the guide rod, the second impact cycle system will start. The disc type diesel hammer takes the cylinder as the hammer seat, and immediately uses the extended cylinder liner inner cavity guiding property, omitting two guide rods. The plunger is the hammer head, which can move left and right in the cylinder. During piling, the pile cap under the hammer seat is pressed on the top of the pile, and the plunger is raised with a hook, and then the hook is impacted downward to reduce the closed gas in the cylinder. And carry out the whole process of oil pump, explosion, impact and ventilation. The work of the diesel hammer is started by burning diesel oil. Therefore, it is necessary to ensure that the closed gas in the cylinder achieves a certain compression ratio. Sometimes, when piling on the soft foundation treatment stratum, the recoil force is too small and the reduction is not enough to ignite and detonate. It is necessary to lift the hammer head with a hook for several times before starting. The hammer seat of diesel hammer is attached with gasoline and diesel injection pump, automobile oil tank, refrigeration water tank and pile cap. The movable gap between plunger and cylinder liner is sealed by elastic piston ring.


柴油锤


A piling machine that uses impact force to drive a pile into the stratum. It is composed of pile hammer, pile frame and attached equipment. The pile hammer is attached to the middle of two vertical guide rods (also known as dragons) on the front side of the pile frame, and is lifted with a lifting hook. According to the design of the pile driving machine, the driving frame is used to control the pile in the rear side of the pile driving machine, which is used to control the pile driving in the rear side of the pile driving machine. The tower body and the guiding frame can be deflected together to drive inclined piles. The guiding frame can also be extended down the tower body, which is used to drive middle piles along the river bank or port. The pile frame can rotate or move. The basic technical parameters of pile driver are net weight of impact part, impact kinetic energy and impact frequency. The driving force of pile hammer can be divided into drop hammer, steam hammer, diesel hammer and hydraulic hammer.

The pile hammer of drop hammer pile driver is a steel heavy block, which is raised by the winch with a hook, and then falls along the guiding frame at will. While the pile driving steam hammer is composed of hammer head and hammer seat, driven by steam or compressed air, there are two kinds of single acting steam hammer and double acting steam hammer. The single acting steam hammer takes the plunger or cylinder as the hammer head. The steam drives the hammer head to rise, and then it descends along the guide rod of the hammer seat to pile. The double acting steam hammer usually uses the intensified plunger as the hammer head and the cylinder as the hammer seat. The steam drives the hammer head to rise, and then drives the hammer head down to impact the pile driving. The reciprocating speed is fast and the frequency is high, which makes the pile vibrate when it penetrates into the stratum, which can reduce the friction resistance, and the piling effect is very good. The weight of the hammer seat is light, the reasonable impact net weight can be relatively expanded, and the characteristics are stronger. The commutation of the inlet and exhaust rotary valve of the steam hammer can be manually intervened, or automatically controlled by the boss operating handle installed on the side of the hammer head and lifting with the hammer head. Both methods can adjust the impact stroke of the steam hammer.


Label

Previous Posts: Pile hammer foundation classification2020-11-12
Next Chapter: None

Last viewed:

Contact Information

jiang su Office

1.png   Add: Western industrial Park, Dongtai City, Jiangsu Province

3.png  ZIP:224217

2.png   TEL:+86-515-85422299

首页底部联系 图标 传真.png  FAX: +86-515-85422399

2.png  HOT LINE:+86 13661556708

首页底部联系 图标 网址.png  WEB :www.jwhammer.cn

                  www.jsjuwei.cn

3.png  EMAIL: jwjx@jsjuwei.cn


Copyright © CHINA JIANGSU JUWEI MACHINERY CO.,LTD Service support:yangtian network
sitemap | RSS | XML