CN2216079Y

CN2216079Y - Hydraulic static and dynamic compound pile-driver

Info

Publication number: CN2216079Y
Application number: CN 95208535
Authority: CN
Inventors: 赵理郁; 吴元良; 张宣良
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-04-14
Filing date: 1995-04-14
Publication date: 1995-12-27
Anticipated expiration: 2005-04-14

Abstract

The utility model relates to a building facility, particularly a hydraulic static and dynamic compound pile driver. A set of impact hammers are installed above the pile clamping device of a pile driver, and the impact hammers and the pile oil cylinder are in cross arrangement. Each impact hammer is a hydraulic impact hammer, and the pile driver utilizes a power source comprising a hydraulic cylinder, a supporting frame, a heavy hammer and a bumper pad. The utility model uses the compound force of static pressure and hammer dropping impact force to drive a pile into the foundation and can meet the construction request of the soft foundation and the hard foundation. The static pressure and the impact force can be used not only solely but also simultaneously, and the utility model has simple structure, and a medium tonnage and a small tonnage pile drivers can replace a large tonnage drivers to construct.

Description

Hydraulic static and dynamic compound pile-driver

The utility model relates to a kind of construction implement, the compound pile press of the quiet power of particularly a kind of hydraulic pressure.

Existing pile press all based on silent piling, leans on a stake machine to conduct oneself with dignity and comes the balance resistance of pressing in.For the geological condition areas with complicated, in order to penetrate silt layer, thin ovum layer geologic structure, must strengthen its pile driving pressure, that is to say, must increase deadweight of stake machine and counterweight, the increase of unit weight is easy to generate complete machine and sink when it is constructed on soft foundation, adapt to the subgrade construction in order to guarantee pile press, have to add the self structure of timber pile machine, like this, not only dwindled the ability of stake machine pressure " skirt piles ", and the resettlement of the equipment of giving has also brought great difficulty.This is the deadly defect of static pile press.

The construction requirement of, hard place base soft in order to adapt to, people transform the piling oil cylinder on little tonnage pile press, when silent piling is subjected to hindering, the impulse force that utilizes the dowel pressing cylinder piston bar to produce substitutes silent piling, widen the scope of application of pile press with this, this improvement actual effect is not remarkable, this be because: 1, silent piling and hydraulic shock can only be used separately, the piling ability fails to bring into play during impact, 2, the impact force that only depends on the deadweight of dowel pressing cylinder piston bar to produce is far from being enough, and has been subjected to influence the application life of piston rod.

The purpose of this utility model mainly is to provide the quiet power of a kind of hydraulic pressure compound pile press at the deficiency of above-mentioned existence, and what it utilized static pressure and tension weight churning sinks to ground with stake with joint efforts.

The purpose of this utility model is realized by following manner: the compound pile press of the quiet power of hydraulic pressure comprises pile chuck, piling oil cylinder, underframe, stride, pile press oil pump, it is characterized in that being equipped with on the pile chuck jump bit.

Its feature also is to be equipped with two jump bits on pile chuck, they and piling oil cylinder are cross arrangement.

Jump bit is a hydraulic impact hammer, it comprises hydraulic cylinder, support, weight and cushion pad, cushion pad is contained on the anvil block of weight, hydraulic cylinder body is contained in the weight body, weight slides up and down along two side stands, and the piston rod of hydraulic cylinder is a through rod, and its upper end is hinged with support, the lower end freely is placed in the cushion pad endoporus, and the hydraulic circuit of hydraulic cylinder connects the pile press oil pump.

Jump bit is impact type vibrating hammer also.

Advantage of the present utility model is: 1, jump bit has been installed on pile chuck, stack power with static pressure and impact force is driven piles, can satisfy construction requirement soft, the hard place base, 2, both can only use static pressure, also can only use the impact force of jump bit, also can use both making a concerted effort simultaneously, given full play to the function of static pile press, 3, simple in structure, 4, the compound pile press of the quiet power of available middle-size and small-size hydraulic pressure substitutes the large-tonnage pile press and constructs, and 5, utilize pile press self power source.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the lateral plan of Fig. 1.

Fig. 3 is the structural principle schematic diagram of hydraulic impact hammer of the present utility model.

Below in conjunction with embodiment the utility model is further described.

Referring to Fig. 1, Fig. 2, the stride 12 of pile press, supporting leg 11, underframe 10, column 4, stake 5, piling oil cylinder 3, hydraulic impact hammer 2 also is housed on pile chuck 1, and hydraulic impact hammer 2 has two, is stake 5 in the centre of pile chuck 1, respectively there is a piling oil cylinder 3 both sides, both sides respectively have 2, two hydraulic impact hammers 2 of a hydraulic impact hammer and two piling oil cylinders 3 to be cross arrangement in addition, for obtaining best impact effect, two hydraulic impact hammers 2 can be joined together, make it synchronous.Between piling oil cylinder 3 and pile chuck 1, isolation rubber pad 13 is housed.Under the active force of piling oil cylinder 3, rubber pad 13 is compressed and transmits pile driving pressure, when external impacts pile chuck 1, rubber pad 13 is elongation rapidly, with remedy pile chuck 1 to bottom offset, make piling oil cylinder 3 not influenced by external force, on hydraulic impact hammer 2 anvil blocks, cushion pad 9 is housed, the mechanical noise when reducing impact with this.

Referring to Fig. 3, hydraulic impact hammer 2 comprises hydraulic cylinder 14, support 6, weight 8 and cushion pad 9, hydraulic cylinder 14 cylinder bodies are contained in weight 8 bodies, the piston rod 7 of hydraulic cylinder 14 is a through rod, the upper end of piston rod 7 and support 6 are hinged, and the lower end freely is placed in cushion pad 9 endoporus, and weight 8 impacts along support 6 slideways of its both sides, no matter whether pile press tilts, and piston rod 7 does not all stress during impact.The hydraulic circuit of hydraulic impact hammer 2 is seen Fig. 3.When pile driving pressure reaches rated pressure or setting pressure, the major loop pressure switch is triggered, the 1DT energising of electromagnetic valve 18, position, a left side is connected, pile press oil pump 19 oil are leaded up to one way valve 17 to accumulator 20 repairings, lead up to one-way throttle valve 16 to hydraulic cylinder 14 epicoele fuel feeding, weight 8 steadily rises, when waiting to rise to top dead centre, pressure switch 21 action, the control time relay is also handled 1DT outage of three position four-way electromagnetic valve 18 by it, the 2DT energising, the 3DT of two-position four-way electro-hydraulic reversing valve 15, the 4DT energising, three reversal valves move simultaneously, and this moment, pile press oil pump 19 and accumulator 20 were jointly to hydraulic cylinder 14 cavity of resorption fuel feeding, epicoele oil flows back to fuel tank by electro-hydraulic reversing valve 15, weight 8 quickens under oil pressure and action of gravity, by cushion pad 9 impact energy is imposed on the pile chuck 1, drives stake 5 by pile chuck 1 and moves down together, after treating that the time, the relay time-delay finished, the 3DT of electro-hydraulic reversing valve 15, the 4DT outage, the 1DT of electromagnetic valve 18 switches on again, begins next step impact cycle.

Can select the jump bit of suitable energy according to the piles with different machine for use, even jump bit can be used as the pile press auxiliary equipment.

Claims

1, the compound pile press of the quiet power of a kind of hydraulic pressure comprises pile chuck, piling oil cylinder, underframe, stride, pile press oil pump, it is characterized in that being equipped with on the pile chuck (1) jump bit (2).

2, the compound pile press of the quiet power of a kind of hydraulic pressure according to claim 1, it is characterized in that pile chuck (1) above two jump bits (2) are housed, they and piling oil cylinder (3) are cross arrangement.

3, the compound pile press of the quiet power of a kind of hydraulic pressure according to claim 1 and 2, it is characterized in that jump bit (2) is a hydraulic impact hammer, it comprises hydraulic cylinder (14), support (6), weight (8) and cushion pad (9), cushion pad (9) is contained on the anvil block of weight (8), hydraulic cylinder (14) cylinder body is contained in weight (8) body, weight (8) slides up and down along two side stands (6), the piston rod (7) of hydraulic cylinder (14) is a through rod, its upper end is hinged with support (6), the lower end freely is placed in cushion pad (9) endoporus, and the hydraulic circuit of hydraulic cylinder (14) connects pile press oil pump (19).

4, the compound pile press of the quiet power of a kind of hydraulic pressure according to claim 1 and 2 is characterized in that jump bit (2) is the impact type vibrating hammer.