JP5483739B2 - Pile driver and pile driving method using the same - Google Patents
Pile driver and pile driving method using the same Download PDFInfo
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- JP5483739B2 JP5483739B2 JP2011023624A JP2011023624A JP5483739B2 JP 5483739 B2 JP5483739 B2 JP 5483739B2 JP 2011023624 A JP2011023624 A JP 2011023624A JP 2011023624 A JP2011023624 A JP 2011023624A JP 5483739 B2 JP5483739 B2 JP 5483739B2
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- 238000010276 construction Methods 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 6
- 230000000875 corresponding Effects 0.000 claims description 4
- 230000003247 decreasing Effects 0.000 claims description 4
- 239000000446 fuels Substances 0.000 description 14
- 230000035515 penetration Effects 0.000 description 7
- 239000002689 soil Substances 0.000 description 7
- 230000001360 synchronised Effects 0.000 description 6
- 238000010586 diagrams Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 230000001276 controlling effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000149 penetrating Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 210000001503 Joints Anatomy 0.000 description 1
- 238000009430 construction management Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000034 methods Methods 0.000 description 1
- 239000003921 oils Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004642 transportation engineering Methods 0.000 description 1
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Description
The present invention relates to a pile driving machine that drives or pulls a pile or sheet pile (hereinafter referred to as “pile”) into the ground by vibration force or pressure input, and suppresses fuel consumption of a motor as a driving source. The present invention relates to a pile driving machine including a driving system and a pile driving method using the same.
There are two types of driving machines for placing ready-made piles: hammering type, vibration type and press-fitting type. Generally, the driving pile type is divided into the driving type and hydraulic type, and the vibration pile driving machine is electric type. The hydraulic and press-fitting pile driver is hydraulic. Furthermore, the device for gripping the pile includes a vibration pile driver and a press-fit pile driver, both of which are hydraulic.
A vibration pile driver transmits vibration force obtained from centrifugal force generated by rotating an eccentric weight by an electric motor or a hydraulic motor to a pile through a pile gripping device, and drives the pile into the ground or pulls it out. . The press-fitting pile driver holds a reaction force receiving member such as a reaction force receiving base or an existing pile by a plurality of clamps and uses the reaction force receiving member's resistance force as a reaction force. The force is transmitted to the pile through the pile gripping device, and the pile is driven into the ground or pulled out.
9 and 10 are schematic views showing a driving method of the conventional electric vibration pile driving machine 1. In the figure, only main components are shown, and notation such as control means and control lines are omitted. A dotted line in the figure indicates a state where energy is supplied. Moreover, the same code | symbol is attached | subjected to the same structure in a figure. The vibration pile driving machine 1 includes an exciter 2 that generates vibration by rotating a plurality of pairs of eccentric weights 3 and a pile gripping device 4 that grips the pile. The vibration force generated by the vibrator 2 is transmitted to the pile 5 through the pile gripping device 4, and the pile 5 is driven into the ground or pulled out. The power source is composed of a large motor 6, and the generator 7 is driven by the large motor 6. An exciter drive device configured by an exciter motor 8 that rotates the eccentric weight 3 of the exciter 2 is driven by the energy of the generator 7. Further, the energy of the generator 7 is supplied to the pile gripping motor 9, and the pile gripping device is driven by the hydraulic energy of the pile gripping hydraulic pump 10 of the pile gripping hydraulic pump 10 configured by the pile gripping hydraulic pump 10 driven by the pile gripping motor 9. 4 is driven. In addition, it is good also as the control unit B which unitized the control means of the exciter drive system, the pile holding drive system, and the control means.
FIG. 10 shows a drive system in a state where the exciter motor 8 of the conventional electric vibration pile driving machine 1 shown in FIG. 9 is stopped. The energy of the generator 7 driven by the large motor 6 is supplied to the pile gripping motor 9, and the pile gripping device 4 is driven by the pile gripping hydraulic pump 10.
FIG. 11 and FIG. 12 are schematic diagrams showing a driving method of the conventional hydraulic vibration pile driving machine 1. 11 and 12 show only the main components as in FIGS. 9 and 10. In the hydraulic drive system in which the eccentric weight 3 of the exciter 2 is driven by the exciter hydraulic motor 11, the power source is composed of a large motor 6, and the large motor 6 drives the hydraulic pumps 13 and 10. To do. An exciter drive device configured by an exciter hydraulic motor 11 that rotates the eccentric weight 3 of the exciter 2 is driven by hydraulic energy of the exciter hydraulic pump 13 driven by the large generator 6. Further, the energy of the generator 7 driven by the large motor 6 is supplied to the pile gripping motor 9, and the pile gripping hydraulic pressure of the pile gripping drive device configured by the pile gripping hydraulic pump 10 driven by the pile gripping motor 9 is used. The pile gripping device 4 is driven by the hydraulic energy of the pump 10. A power unit C including a power source, an exciter drive system and its control means (not shown), a pile gripping drive system and its control means (not shown) as a unit.
FIG. 12 shows a drive system in a state where the exciter hydraulic motor 11 of the conventional hydraulic vibration pile driver 1 shown in FIG. 11 is stopped. The pile gripping device 4 is driven by the hydraulic energy of the pile gripping hydraulic pump 10 driven by the large motor 6.
In the conventional example of the vibration pile driving machine shown in FIG. 9 to FIG. 12, one pile gripping device 4 grips one pile 5. A technique is also known in which a pile driver is mounted on a large pile with a single large diameter, and a plurality of vibration pile drivers are mechanically synchronized. In this case, one large motor is connected to one vibration pile driver.
13 and 14 are schematic views showing a driving method of the conventional press pile driver 20. FIGS. 13 and 14 show only the main components as in FIGS. 9 to 12.
The press-fitting pile driver 20 includes a saddle 23 provided with a clamp 22 for gripping a reaction force receiving member such as a reaction force receiving base or an existing pile, a slide portion 24 slidable in the horizontal direction with respect to the saddle 23, and a slide portion Is provided with a leader mast 25 that can be turned relative to the head. The leader mast 25 supports the press-fitting / drawing cylinder 21 and the pile gripping device 4 constituting the press-fitting portion 30 so as to be movable up and down. The power source of the press-fitting pile driver 20 is composed of a large-sized engine 6, and the large-sized engine 6 drives the hydraulic pumps 27, 28, and 29. Similarly to the hydraulic vibration pile driver, a power unit, a press-fitting machine drive system and its control means, and a pile gripping drive system and its control means are unitized into a power unit E. The press-in / pull-out cylinder 21 is driven by the hydraulic energy of the press-in / pull-out cylinder hydraulic pump 27 driven by the large motor 6. During the driving of the press-fit pull-out cylinder 21, the pile gripping device 4 is driven by the hydraulic energy of the pile gripping hydraulic pump 28 of the pile gripping hydraulic pump 28 constituted by the pile gripping hydraulic pump 28 driven by the large motor 6. During the driving of the press-in / draw-out cylinder 21, the clamp 22 is driven by the hydraulic energy of the clamp hydraulic pump 29 of the clamp drive device constituted by the clamp hydraulic pump 29 driven by the large-sized engine 6.
FIG. 14 is a schematic view showing a drive system in a state where the press-fitting / pulling cylinder 21 of the conventional press-fitting pile driver 20 is stopped. While driving of the press-fitting cylinder 21 is stopped, the large-sized engine 6 drives the pile gripping hydraulic pump 28 and the clamp hydraulic pump 29 to drive the pile gripping device 4 and the clamp 22.
Of the total work time at the pile placement site, the ratio of pile driving time to give the pile a vibration force or pressure input to penetrate into the ground is generally small, and pile positioning and measurement work other than pile driving work, joints Long waiting time for matching. This pile driving time rate is generally about 50% to 60%.
Furthermore, the energy of the pile driver is divided into the penetration energy for penetrating the pile by giving vibration force or pressure input to the pile, and the pile gripping energy for giving pressure oil to the pile gripping device and clamp to grip the pile. Broadly divided. Both of these energy sources are a single large motor 6.
The energy consumption per hour of the exciter and press-fitting cylinder depends on the resistance of the ground to the penetration of the pile, the size and length of the cross-sectional area of the pile, and the output of the pile driver to prevent pollution. In order to hold the pile in comparison with the penetration energy of the pile, it changes by gradually penetrating the pile to stabilize below the rating or when the ground at the beginning of the pile is soft, to stabilize the verticality of the pile. The energy consumption per hour is extremely low. Although it varies depending on the working conditions, it is generally about several percent.
When carrying out the pile driving work (drawing work) with the vibration pile driving machine 1 or the press-fitting pile driving machine 20, it is necessary to hold the pile 5 with the pile holding device 4 in order to transmit vibration force and pressure input to the pile. During work such as pile positioning, measurement work, joint fitting, etc., the pile 5 is continued by the pile gripping device 4 even when the vibration pile driving machine or press-fitting pile driving machine is in a stand-by time other than the pile driving work. Need to be gripped.
In the case of the electric vibration pile driving machine shown in FIGS. 9 and 10, in order to continue the holding of the pile 5 by the pile holding device 4, the large-sized engine 6 and the generator 7 are continuously operated and the pile holding hydraulic pump is operated. 10 needs to be driven. The output of the exciter motor 8, the output of the pile gripping motor 9, and the output of the generator 7 of the general electric vibration pile driver 1 are shown in Table 1 below.
(Table 1)
┌─────────┬─────────┬────────┐
│ Exciter motor output │ Pile gripping motor output │ Generator output │
├─────────┼─────────┼────────┤
│ 45kW │ 3.7kW │ 120kW │
├─────────┼─────────┼────────┤
│ 60 kW │ 3.7 kW │ 160 kW │
├─────────┼─────────┼────────┤
│ 90 kW │ 5.5 kW │ 240 kW │
├─────────┼─────────┼────────┤
│ 120kW │ 5.5kW │ 320kW │
├─────────┼─────────┼────────┤
│ 180 kW │ 11 kW │ 480 kW │
├─────────┼─────────┼────────┤
│ 240 kW │ 15 kW │ 640 kW │
└─────────┴─────────┴────────┘
The large-sized motor 6 has a large capacity for driving the exciter motor 8 via the generator 7, but during the standby time, the pile gripping hydraulic pump 10 via the small capacity pile gripping motor 9 is used. The large motor 6 is operated at a significantly low load factor. In general, the load factor is several percent.
Similarly, in the case of the hydraulic vibration pile driving machine shown in FIGS. 11 and 12, it is necessary to drive the pile gripping hydraulic pump 10 in order to maintain the pile gripping by the pile gripping device 4 during the standby time. The engine 6 must continue to operate.
The large motor 6 has a large capacity for driving the exciter hydraulic pump 13, but only the small capacity pile gripping hydraulic pump 10 is driven during the standby time. Operates at a significantly lower load factor. In general, the load factor is several percent.
Similarly, in the case of the hydraulic press-fitting pile driver 20 shown in FIGS. 13 and 14, in order to maintain the holding of the pile 5 by the pile holding device 4 and the holding of the reaction force receiving member by the clamp 22 during the standby time, It is necessary to drive the pile gripping hydraulic pump 28 and the clamp hydraulic pump 29, and the large-sized engine 6 must be continuously operated.
The large-sized motor 6 has a large capacity for driving the press-fitting / pulling cylinder hydraulic pump 27, but grips the pile 5 and the reaction force receiving member by the small-capacity pile gripping device 4 and the clamp 22 during the standby time. In order to continue the operation, each hydraulic cylinder is driven, so that the large-sized motor 6 is operated at a significantly low load factor. In general, the load factor is several percent.
As described above, in the conventional pile driving machine, even if it is an electric vibration pile driver, a hydraulic vibration pile driver, or a hydraulic press pile driver, a large power source is reduced during the standby time. You must keep driving at.
For example, as shown in Table 1 above, the output of the exciter motor 8 is 45 kW to 240 kW, and the required capacity of the generator 7 is 120 kW to 640 kW. (In order to drive into or out of the soil, it is necessary to increase the starting torque and stopping torque of the motor, and starting the motor requires about three times the rated output power). On the other hand, the output of the pile gripping motor 9 is only about 3.7 kW to 15 kW. That is, a large power source is driven as a power source of the small pile gripping motor 9 during the standby time period other than the pile driving operation. At this time, the load factor of the large motor 6 is only a few percent, and the waste of fuel consumption in this state is extremely large. When the large-sized motor 6 is operated, friction losses such as bearings, pistons, and cooling mechanisms are generated. These friction losses increase as the motor 6 increases in size. For this reason, the fuel consumption efficiency deteriorates as the large-capacity motor 6 is operated at a low load factor, and the fuel is wasted.
The present invention solves the above-described conventional problems, and provides a pile driving machine equipped with a drive system capable of suppressing fuel consumption with a simple configuration and a pile driving method using the same. For the purpose.
In order to solve the above problems, the pile driving machine of the present invention is a pile driving machine that transmits a vibration force from a vibration generator to a pile through a pile gripping device, and is driven by an output of a main power source. Machine driving device, pile driving device driven by the output of the main power source when driving the exciter driving device, and stopping the operation of the main power source during standby other than pile driving work, Switching means for switching so that the pile gripping device is driven by the output from the auxiliary power source, and a dedicated drive unit for driving the pile gripping device by the output from the auxiliary power source.
In addition, "in standby other than pile driving work"
(1) As a waiting time after pile gripping,
Pile construction time such as pile transportation and movement, pile positioning and measurement, and pile joint alignment.
(2) As a waiting time after completion of pile driving,
Time to measure pile penetration, measurement to check pile driving position, and check pile driving posture.
(3) As waiting time after completion of confirmation measurement,
This means the overall time during which the exciter drive unit is stopped, such as the time for welding the joint.
Moreover, the pile driving machine of the present invention has one or more vibrators mounted on the base member, one or more pile gripping devices attached to the lower portion of the base member, and the vibration force of the vibrator is piled. In a pile driving machine that transmits to a pile via a gripping device, an exciter drive device that is driven by an output of a main power source arranged for each of the one or more exciters, and the exciter drive device When driving, the pile gripping device driven by the output of the main power source, and during standby other than the pile driving operation, the operation of the main power source is stopped and arranged for each of the one or more vibrators. Switching means for switching to drive the pile gripping device by the output of the auxiliary power source having a small capacity, and a dedicated drive unit for driving the pile gripping device by the output of the auxiliary power source. .
Further, the pile driving machine of the present invention is a pile driving machine that transmits the pressure input or drawing force of a press-fitting and pulling cylinder with a reaction force receiver as a press-fitting or drawing reaction force to a pile through a pile gripping device. Press-and-pull cylinder driven by output, Pile gripping device driven by output of main power source during driving of press-fit and pull-out cylinder, and stop operation of main power source during standby other than pile driving A switching means for switching to drive the pile gripping device by an output of a small-capacity auxiliary power source; and a dedicated drive for driving the pile gripping device by an output of the auxiliary power source. .
In addition, "at the time of standby other than pile driving work" at the time of press-fitting work,
(4) As a waiting time after pile gripping,
Time for pile construction such as self-propelled forward or backward movement, saddle movement, mast turning, pile positioning and measurement, and pile joint alignment.
(5) As waiting time after completion of pile driving,
Time to measure pile penetration, measurement to check pile driving position, and check pile driving posture.
(6) As a waiting time after completion of confirmation measurement,
This means the overall time during which the press-fitted part is stopped, such as the welding work time of the joint.
Moreover, the pile driving machine of the present invention is characterized in that the auxiliary power source is a battery or a small motor.
The pile driving method of the present invention includes an exciter drive device driven by an output of a main power source, and a pile gripping device driven by an output of the main power source when the exciter drive device is driven. A switching means for stopping the operation of the main power source during standby other than the pile driving work, and switching to drive the pile gripping device by the output of a small capacity auxiliary power source consisting of a battery or a small motor; And a dedicated driving machine that drives the pile gripping device by the output of the auxiliary power source, and using a pile driving machine that transmits the vibration force of the vibrator to the pile via the pile gripping device, the pile to the ground It is characterized by being driven or pulled out.
In the pile driving method of the present invention, one or a plurality of vibrators are attached on a base member, one or a plurality of pile gripping devices are attached to a lower part of the base member, and the one or a plurality of vibration generators are attached. An exciter drive device driven by the output of the main power source arranged for each machine, a pile gripping device driven by the output of the main power source when driving the exciter drive device, and a pile driving work During the standby period other than the above, the operation of the main power source is stopped, and the pile gripping device is output by the output of a small capacity auxiliary power source comprising a battery or a small motor arranged for each of the one or a plurality of vibrators A pile that includes a switching means for switching to drive and a dedicated drive that drives the pile gripping device by the output of the auxiliary power source, and transmits the vibration force of the vibrator to the pile via the pile gripping device It is characterized by driving or pulling the pile into the ground using a hammer. .
Further, the pile driving method of the present invention includes a plurality of vibrators connected by a drive shaft with a universal joint, attached to a large-diameter pile via a pile gripping device, and arranged mainly for each of the plurality of vibrators. An exciter driving device driven synchronously by the output of the power source, a pile gripping device driven by the output of the main power source at the time of driving the exciter driving device, and a standby time other than the pile driving work, Switching means for stopping operation of the main power source and switching to drive the pile gripping device by an output of a small capacity auxiliary power source comprising a battery or a small motor arranged for each of the plurality of vibrators; And a dedicated driving machine that drives the pile gripping device by the output of the auxiliary power source, and driving using a pile driving machine that transmits the vibration force of the plurality of vibrators to the pile via the pile gripping device Of the main power source that is electrically synchronously operated in accordance with the magnitude of the load. Rolling the number of increased or decreased and wherein the striking or pulling it into the ground stakes.
Further, the pile driving method of the present invention includes a press-fit pulling cylinder driven by an output of a main power source, a pile gripping device driven by an output of the main power source when driving the press-fit pulling cylinder, and a pile driving work Switching means for stopping operation of the main power source during standby, and switching to drive the pile gripping device by the output of a small capacity auxiliary power source consisting of a battery or a small motor, and the auxiliary power source And a dedicated drive for driving the pile gripping device by the output of the pile, and transmitting the pressure input or pulling force of the press-fitting pulling cylinder with the reaction force receiver as a press-fitting or pulling reaction force to the pile via the pile gripping device It is characterized by driving or pulling the pile into the ground using a hammer.
A pile driving machine that transmits the vibration force of the vibrator to the pile via the pile gripping device and the pressure input or pulling force of the press-fitting cylinder that uses the reaction force receiver as a press-fitting or drawing reaction force to the pile via the pile gripping device In the transmitting pile driver, the operation of the large-capacity main power source is stopped during the standby time other than during the pile driving operation, and the pile is gripped only by driving with the small-capacity auxiliary power source, so the fuel consumption is greatly increased. It becomes possible to reduce.
One or more vibrators are attached on the base member, one or more pile gripping devices are attached to the lower part of the base member, and the vibration force from the vibrator is transmitted to the piles via the pile gripping device. In the pile driver, an exciter drive device driven by an output of a main power source arranged for each of the one or more exciters, and when the exciter drive device is driven, The pile gripping device driven by the output and the output of the small-capacity auxiliary power source arranged for each of the one or the plurality of vibrators during the standby other than the pile driving operation, the operation of the main power source is stopped. Switching means for switching to drive the pile gripping device, and a dedicated drive machine for driving the pile gripping device by the output from the auxiliary power source, so that during a waiting time other than during pile driving work Stop the operation of the large-capacity main power source and operate the small-capacity auxiliary power source Since gripping the pile by themselves and it is possible to significantly reduce fuel consumption.
When the auxiliary power source is a battery having a small capacity composed of a battery or a small motor, when the auxiliary power source is a battery, the AC power from the generator is converted into a DC power and the battery is charged. Alternatively, it is possible to use a battery and a charge control unit mounted on the work vehicle. By making the auxiliary power source a small motor, the installation space can be reduced.
By adopting a method of driving or pulling a pile into the ground using the above pile driver, the operation of a large-capacity main power source is stopped during a standby time other than during the pile driving work, and a small capacity Since the pile is gripped only by driving with the auxiliary power source, fuel consumption can be greatly reduced.
Also, using a pile driving machine that transmits the vibration force of multiple vibrators to the pile via the pile gripping device, operation of multiple main power sources that are electrically tuned according to the magnitude of the driving load By increasing or decreasing the number of units and driving large-diameter piles into the ground, when the driving load is small, the number of operating main power sources that are electrically synchronized can be reduced, greatly reducing fuel consumption. It becomes possible to do.
An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view showing a state in which a vibration generator 2 of an electric vibration pile driving machine 1 according to the present invention is being driven. In the figure, only main components are shown, and notation such as control means and control lines are omitted. A dotted line in the figure indicates a state where energy is supplied.
The vibration pile driving machine 1 for driving the pile 5 into the ground includes a vibrator 2 composed of a pair of eccentric weights 3 and a pile gripping device 4 for gripping the pile 5. The vibrator 2 rotates the pair of eccentric weights 3 in the reverse direction, and the centrifugal force generated on each axis is used as the vertical vibration force. The vibration of the vibrator 2 is transmitted to the pile 5 through the pile gripping device 4 and drives the pile 5 into the ground. The exciter 2 includes an exciter motor 8 that rotationally drives the eccentric weight 3. The main power source A is composed of a large motor 6. A generator 7 is driven by a large motor 6. The exciter motor 8 that rotates the eccentric weight 3 of the exciter 2 is driven by the energy from the generator 7. Further, when the exciter motor 8 is driven, the energy of the generator 7 is supplied to the pile gripping motor 9 and the pile gripping device 4 is driven by the hydraulic energy from the pile gripping hydraulic pump 10 driven by the pile gripping motor 9. .
A small-capacity auxiliary power source 14 is installed separately from the main power source A. The small-capacity auxiliary power source 14 is a battery 15 having a charging control unit (not shown) or a small motor (not shown). When the auxiliary power source 14 is the battery 15, it is possible to use a battery having a charging control unit mounted on a work vehicle such as a crane truck that is indispensable for the vibration pile driving work. 14 need not be prepared. While the generator 7 is driven to the charge control unit, the AC power of the generator 7 may be converted into a DC power source and supplied to the charge control unit to charge the battery 15 or may be charged from a commercial power source. When the auxiliary power source 14 is a small motor, a small generator (not shown) is driven by the small motor. When the auxiliary power source 14 is a small motor, the installation space is small because the device is small. A small auxiliary hydraulic pump 17 is driven by an auxiliary electric motor 16 driven by the auxiliary power source 14, and the pile gripping device 4 is driven by hydraulic energy from the auxiliary hydraulic pump 17. The auxiliary power source 14 and its control system and the electric control unit (not shown) for controlling the auxiliary hydraulic pump 17 and its hydraulic control valve (not shown) are unitized as an auxiliary control unit D.
FIG. 2 is a schematic diagram showing a standby state other than the pile driving work of the electric vibration pile driving machine 1 of the present invention. A dotted line in the figure indicates a state where energy is supplied.
The waiting time other than the pile driving work is, for example, (1) the waiting time after the pile is gripped, the time for pile construction work such as pile movement, pile positioning, and pile joint alignment. (2) As the waiting time after the completion of pile driving, the measurement of the amount of penetration of the pile, the measurement for checking the pile driving position, and the measurement for checking the pile driving posture. (3) The standby time after completion of the confirmation measurement means a general time in which the exciter motor 8 is stopped, such as a time for welding the joint. The waiting time tends to be longer as the pile is larger and the construction management is more strict, and it is not uncommon for the waiting time to be longer than the pile driving time.
During such a standby time, the operation of the large-sized motor 6 that is the main power source A is stopped, the small-capacity auxiliary power source 14 is driven, and the auxiliary electric motor 16 driven by the auxiliary power source 14 is used as the auxiliary hydraulic pressure. There is provided switching means (not shown) for driving the pump 17 to switch the pile gripping device 4 to be driven by the hydraulic energy of the auxiliary hydraulic pump 17. When the pile driving work and the pile drawing work are resumed, the switching means stops the operation of the auxiliary power source 14 and switches it to be driven by the large motor 6 that is the main power source A as shown in FIG. . For example, the switching means is set to operate when a signal for stopping and resuming the exciter motor 8 is transmitted to the control unit via the control line. As shown in Table 1, the capacity of the auxiliary power source 14 may be a small capacity corresponding to the output (3.7 to 15 kW) of the auxiliary motor 16 that drives the auxiliary hydraulic pump 17 for holding the pile. During the standby time that may be longer than the pile driving time, the operation of the large-sized engine 6 as the large-capacity main power source A is stopped, the small-capacity auxiliary power source 14 is operated, and the pile gripping device 4 is driven. As a result, fuel consumption can be significantly reduced.
FIG. 3 is a schematic view showing a state in which the vibration generator 2 of the hydraulic vibration pile driving machine 1 of the present invention is being driven. As in FIGS. 1 and 2, only the main components are shown, and notation such as control means and control lines are omitted. A dotted line in the figure indicates a state where energy is supplied.
In the hydraulic drive system in which the eccentric weight 3 of the exciter 2 is driven by the exciter hydraulic motor 11, the main power source A is composed of a large motor 6. The large-sized motor 6 drives an exciter hydraulic pump 13 and drives an exciter hydraulic motor 11 that rotates the eccentric weight 3 of the exciter 2 by the hydraulic energy of the exciter hydraulic pump 13. Furthermore, the large-sized motor 6 drives the pile gripping hydraulic pump 10 and drives the pile gripping device 4 by the hydraulic energy from the pile gripping hydraulic pump 10. The main power source A, the vibrator drive system and its control means (not shown), the pile gripping drive system and its control means (not shown) are unitized to form a power unit C.
A small-capacity auxiliary power source 14 is installed separately from the main power source A. The small-capacity auxiliary power source 14 is a battery 15 having a charge control unit (not shown) or a small motor (not shown). The auxiliary power source 14 and its control system and the electric control unit (not shown) for controlling the auxiliary hydraulic pump 17 and its hydraulic control valve (not shown) are unitized as an auxiliary control unit D.
FIG. 4 is a schematic view showing a standby state other than the pile driving work of the hydraulic vibration pile driving machine 1 of the present invention. A dotted line in the figure indicates a state where energy is supplied.
During the standby time, the operation of the large-sized engine 6 that is the main power source A is stopped, the small-capacity auxiliary power source 14 is operated, and the auxiliary hydraulic pump 17 is operated by the auxiliary electric motor 16 driven by the auxiliary power source 14. Switching means (not shown) for driving and switching so as to drive the pile gripping device 4 by the hydraulic energy of the auxiliary hydraulic pump 17 is provided. When the pile driving work and the pile drawing work are resumed, the switching means stops the operation of the auxiliary power source 14 and switches it to be driven by the large motor 6 which is the main power source A as shown in FIG. . The switching means is set to operate when, for example, a stop / restart signal of the exciter hydraulic motor 11 is transmitted to the control unit via the control line. As shown in Table 1, the capacity of the auxiliary power source 14 may be a small capacity corresponding to the output (3.7 to 15 kW) of the auxiliary motor 16 that drives the auxiliary hydraulic pump 17 for holding the pile. During the standby time that may be longer than the pile driving time, the operation of the large-sized engine 6 as the large-capacity main power source A is stopped, the small-capacity auxiliary power source 14 is operated, and the pile gripping device 4 is driven. As a result, fuel consumption can be greatly reduced.
FIGS. 5A, 5 </ b> B, and 5 </ b> C are schematic diagrams illustrating a state in which the vibration pile driving machine 1 is attached to the beam-like base member 31 in advance according to the shape and size of the pile 5.
In the embodiment shown in FIG. 5 (a), two exciters 2 are mounted on a base member 31, and the shafts of the two exciters 2 are connected by a drive shaft 32 with a universal joint to perform mechanical synchronous operation. Make it possible. One pile gripping device 4 is attached to the lower part of the base member 31. The drive system of the vibrator 2 may be electric or hydraulic. As shown in FIGS. 1 to 4, the two exciters 2 include a main power source A composed of a large motor 6 and a small-capacity auxiliary power source 14. The vibrator drive devices 8 and 11 and the pile gripping device 4 are driven by the power source A. During the standby time, the operation of the main power source A is stopped, the small-capacity auxiliary power source 14 is operated, and the pile gripping device 4 is driven by the hydraulic energy of the auxiliary hydraulic pump 17 driven by the auxiliary motor 16 of the auxiliary power source 14. Switch to drive.
In the embodiment shown in FIG. 5B, one vibrator 2 is attached on the base member 31, and two pile gripping devices 4 are attached to the lower part of the base member 31. The drive of the vibrator 2, the drive, and the pile gripping device 4 is the same as the embodiment shown in FIG.
In the embodiment shown in FIG. 5C, three exciters 2 are mounted on the base member 31, and the shafts of the three exciters 2 are connected by a drive shaft 32 with a universal joint to perform mechanical synchronous operation. Make it possible. Three pile gripping devices 4 are attached to the lower part of the base member 31. The driving of the vibrator 2 and the driving of the pile gripping device 4 are the same as in the embodiment shown in FIG.
In FIG. 6, when the pile driven into the ground is large in diameter and large, a plurality of vibrators 2A, 2B, 2C, 2D, 2E, and 2F are arranged on the ring-shaped base member 31 at equal intervals. Adjacent vibrator shafts are connected by a universal joint drive shaft 32 to enable mechanical synchronous operation. A plurality of pile gripping devices 4 are attached to the lower surface of the base member 31. The plurality of vibrators 2A, 2B, 2C, 2D, 2E, and 2F are main power sources A1, A2, A3, A4, A5, and A6 each composed of a large motor and a small capacity composed of a battery or a small motor. Auxiliary power sources 14A, 14B, 14C, 14D, 14E, and 14F and control devices a1, a2, a3, a4, a5, and a6. Each control device a1, a2, a3, a4, a5, a6 is connected by a control line, and the plurality of main power sources A1, A2, A3, A4, A5, A6 are electrically operated synchronously.
The drive system for the plurality of vibrators 2A, 2B, 2C, 2D, 2E, and 2F may be electric or hydraulic. The plurality of vibrators 2A, 2B, 2C, 2D, 2E, and 2F are each provided with a main power source A and a small-capacity auxiliary power source 14, as shown in FIGS. During driving of 2C, 2D, 2E, and 2F, the vibrator drive devices 8 and 11 and the pile gripping device 4 are driven by the main power sources A1, A2, A3, A4, A5, and A6. During the standby time, the operation of the main power sources A1, A2, A3, A4, A5, A6 is stopped, and the auxiliary motor 16 is driven by the small-capacity auxiliary power sources 14A, 14B, 14C, 14D, 14E, 14F, The pile gripping device 4 is switched to be driven by the hydraulic energy of the auxiliary hydraulic pump 17 driven by the auxiliary electric motor 16. The required number of vibrators and pile gripping devices are attached to the base member 31 in advance according to the pile standard and the difference in shape. During the standby time other than during pile driving, the operation of the large-capacity main power source is stopped, and the pile is gripped only by driving with a small-capacity auxiliary power source, so the fuel consumption can be greatly reduced. .
When the pile 5 is driven into the ground by the vibration pile driver 1, the driving or pulling-out load is changed due to a change in the soil quality in the ground. For example, when the underground soil is sandy, the driving or drawing load is small and the pile 5 can be driven or pulled into the ground with a small amount of energy. However, when the soil is clayy, the driving or drawing load is large. A large amount of energy is required to drive or pull out the stake 5 into the ground.
The pile driving or pulling load of the driving ground is based on the soil column diagram obtained by core boring of the pile driving ground that may be carried out during the pile driving construction and the surrounding ground information obtained by past construction. It is possible to estimate based on soil information in the depth direction such as an estimated soil column diagram. For vibration pile drivers, the load factor applied to the pile by increasing or decreasing the current value in the case of electric type, by changing the pressure in the case of hydraulic type, and by the magnitude of pressure input or pull-out force in the case of press-in pile driver. Can be estimated.
In the case of large-diameter and large pile driving with a plurality of vibrators 2A, 2B, 2C, 2D, 2E, and 2F shown in FIG. 6, they are electrically operated synchronously according to changes in driving load. Increase or decrease the number of operating main power sources A1, A2, A3, A4, A5, A6. When the load factor related to the pile 5 is small, the fuel consumption is greatly reduced by reducing the number of operating main power sources A1, A2, A3, A4, A5, and A6 that are electrically operated synchronously. It becomes possible.
FIG. 7 is a schematic view showing a state in which the press-fitting pull-out cylinder 21 of the hydraulic press-fitting pile driver 20 of the present invention is being driven. As in FIGS. 1 and 2, only the main components are shown, and notation such as control means and control lines are omitted. A dotted line in the figure indicates a state where energy is supplied.
The press-fitting pile driver 20 includes a saddle 23 provided with a clamp 22 for gripping a reaction force receiving member such as a reaction force receiving base or an existing pile, a slide portion 24 slidable in the horizontal direction with respect to the saddle 23, and a slide portion Is provided with a leader mast 25 that can be turned relative to the head. The leader mast 25 supports the press-fitting / drawing cylinder 21 and the pile gripping device 4 constituting the press-fitting portion 30 so as to be movable up and down. The main power source A of the press pile driver 20 is composed of a large motor 6. Like the hydraulic vibration pile driver, a power unit E is obtained by unitizing the control unit. The press-in / pull-out cylinder 21 is driven by the hydraulic energy of the press-in / pull-out cylinder hydraulic pump 27 driven by the large motor 6. During the driving of the press-in / draw-out cylinder 21, the pile gripping device 4 is driven by the hydraulic energy of the pile gripping hydraulic pump 28 driven by the large motor 6, and the hydraulic energy of the clamp hydraulic pump 29 driven by the large motor 6 To drive the clamp 22.
A small-capacity auxiliary power source 14 is installed separately from the main power source A. The small-capacity auxiliary power source 14 is a battery 15 having a charge control unit (not shown) or a small motor (not shown). FIG. 7 shows a case where the auxiliary power source 14 is a battery 15. The auxiliary power source 14 and its control system, and the auxiliary hydraulic pumps 17 and 18 and an electric control unit (not shown) for controlling the hydraulic control valve (not shown) are unitized as an auxiliary control unit F.
FIG. 8 is a schematic view showing a standby state other than the pile driving operation of the hydraulic press-fitting pile driver 20 of the present invention. A dotted line in the figure indicates a state where energy is supplied.
The standby time other than the pile driving work of the press-fitting pile driver 20 is as follows. (1) As the standby time after the pile is gripped, the self-propelled when moving forward or backward, the saddle moving, the mast turning, Pile erection work such as measurement and pile joint alignment. (2) As waiting time after completion of pile driving, measurement of pile penetration, measurement for checking pile driving position, measurement time for checking pile driving posture. (3) The waiting time after completion of the confirmation measurement means the entire time during which the press-fitted part is stopped, such as the time for welding the joint part.
During the standby time, the operation of the large-sized engine 6 that is the main power source A is stopped, the small-capacity auxiliary power source 14 is operated, and the auxiliary hydraulic pump 17 is operated by the auxiliary electric motor 16 driven by the auxiliary power source 14. Switching means (not shown) for driving and driving the pile gripping device 4 by hydraulic energy from the auxiliary hydraulic pump 17 and switching the clamp 22 to be driven by hydraulic energy of the auxiliary hydraulic pump 18 driven by the auxiliary electric motor 16 It has. When restarting the pile driving work and the pile drawing work, the switching means stops the operation of the auxiliary power source 14 and switches it to be driven by the main power source A as shown in FIG. For example, the switching means is set to operate when a stop / restart signal of the press-fitting cylinder 21 is transmitted to the control unit via the control line. As shown in Table 1, the capacity of the auxiliary power source 14 may be a small capacity corresponding to the output (3.7 to 15 kW) of the auxiliary motor 16 that drives the auxiliary hydraulic pumps 17 and 18 for gripping the pile. During the standby time that may be longer than the pile driving time, the operation of the large-capacity main power source A is stopped, the small-capacity auxiliary power source 14 is operated, and the pile gripping device 4 and the clamp 22 are driven. The amount can be greatly reduced.
As described above, according to the pile driving machine of the present invention and the pile driving method using the same, the operation of the large-capacity main power source is stopped during the standby time other than the pile driving operation, and the small-capacity auxiliary power is Since the pile gripping device and the clamp are driven by the source, the fuel consumption can be greatly suppressed. In addition, using a pile driving machine that transmits vibration forces from multiple vibrators to the pile via the pile gripping device, multiple main power sources that are electrically tuned in response to the magnitude of the driving load Increase or decrease the number of operating units and drive or pull out large-diameter piles into the ground, so that when the driving load is small, the number of operating units of the main power source that is electrically synchronized can be reduced. The amount can be greatly reduced.
1: Vibration pile driver, 2: Exciter, 3: Eccentric weight, 4: Pile gripping device, 5: Pile, 6: Large motor, 7: Generator, 8: Exciter motor, 9: Pile gripping motor, 10: Pile gripping hydraulic pump, 11: Exciter hydraulic motor, 13: Exciter hydraulic pump, 14: Auxiliary power source, 15: Battery, 16: Auxiliary motor, 17: Auxiliary hydraulic pump, 18: Auxiliary hydraulic pump, 20: press-fitting pile driver, 21: press-fitting cylinder, 22: clamp, 23: saddle, 24: slide part, 25: leader mast, 27: press-fitting cylinder pump, 28: pile gripping pump, 29: Clamp pump, 30: press-fit part, 31: base member, 32: drive shaft with universal joint, A: main power source, B: control unit, C: power unit, D: auxiliary control unit, E: power unit, F: auxiliary controller Ruyunitto
Claims (8)
- In the pile driving machine that transmits the vibration force from the vibrator to the pile through the pile gripping device, the vibrator driving device driven by the output of the main power source, and when the vibrator driving device is driven, Pile gripping device driven by the output of the main power source, and during the standby other than the pile driving work, the operation of the main power source is stopped and the pile gripping device is driven by the output of the small-capacity auxiliary power source A pile driving machine comprising: switching means for switching; and a dedicated driving machine that drives the pile gripping device by the output of the auxiliary power source.
- A pile that attaches one or more vibrators to the base member, attaches one or more pile gripping devices to the lower part of the base member, and transmits the vibration force of the vibrator to the piles via the pile gripping device In the hammer, the exciter drive device driven by the output of the main power source arranged for each of the one or more exciters, and when driving the exciter drive device, from the main power source The pile gripping device driven by the output and the output of the small-capacity auxiliary power source arranged for each of the one or the plurality of vibrators during the standby other than the pile driving operation, the operation of the main power source is stopped. A pile driving machine comprising: switching means for switching so as to drive the pile gripping device, and a dedicated driving machine for driving the pile gripping device by the output of the auxiliary power source.
- In a pile driving machine that transmits a pressure input or extraction force from a press-fitting extraction cylinder to a pile through a pile gripping device using a reaction force receiver as a press-fitting or extraction reaction force, a press-fitting extraction cylinder driven by the output of a main power source; When driving the press-fit pull-out cylinder, the pile gripping device driven by the output of the main power source and the standby power other than the pile driving operation, the operation of the main power source is stopped, and the output of the small-capacity auxiliary power source A pile driving machine comprising: switching means for switching to drive the pile gripping device; and a dedicated drive for driving the pile gripping device by the output of the auxiliary power source.
- The pile driving machine according to any one of claims 1 to 3, wherein the auxiliary power source is a battery or a small motor.
- The exciter drive device driven by the output of the main power source, the pile gripping device driven by the output of the main power source at the time of driving the exciter drive device, and at the standby time other than the pile driving operation, Switching means for stopping operation of the main power source and switching the drive to drive the pile gripping device by the output of a small capacity auxiliary power source consisting of a battery or a small motor, and the pile gripping by the output of the auxiliary power source A dedicated driving machine for driving the device, and using a pile driving machine that transmits the vibration force of the vibrator to the pile through the pile gripping device, and driving or pulling the pile into the ground Pile driving method to do.
- One or a plurality of vibrators are mounted on the base member, one or a plurality of pile gripping devices are mounted on the lower part of the base member, and a main power source arranged for each of the one or a plurality of vibrators An exciter drive device driven by an output, a pile gripping device driven by an output of the main power source at the time of driving the exciter drive device, a standby state other than a pile driving operation, Switching means for stopping operation and switching to drive the pile gripping device by the output of a small-capacity auxiliary power source comprising a battery or a small motor arranged for each of the one or more vibrators; And a dedicated driving machine that drives the pile gripping device by the output of the auxiliary power source, and using a pile driving machine that transmits the vibration force of the vibrator to the pile via the pile gripping device, the pile to the ground A pile driving method characterized by driving or pulling.
- A plurality of vibrators are connected by a drive shaft with a universal joint, attached to a large-diameter pile via a pile gripping device, and driven by the output of a main power source arranged for each of the plurality of vibrators. A driving device, a pile gripping device driven by the output of the main power source at the time of driving the exciter driving device, and the operation of the main power source at a time other than the pile driving operation, Switching means for switching to drive the pile gripping device by the output of a small capacity auxiliary power source consisting of a battery or a small motor arranged for each of the vibrators, and the pile gripping by the output of the auxiliary power source And a dedicated driving machine for driving the device, and using a pile driving machine that transmits the vibration force of the plurality of vibrators to the pile through the pile gripping device, and electrically corresponding to the magnitude of the driving load Drive the piles into the ground by increasing or decreasing the number of operating main power sources operated synchronously. Suck or draw out pile construction method, characterized in that.
- A press-fitting / extracting cylinder driven by the output of the main power source, a pile gripping device driven by the output of the main power source at the time of driving the press-fitting / extracting cylinder, And switching means for switching to drive the pile gripping device by the output of a small-capacity auxiliary power source comprising a battery or a small motor, and the pile gripping device is output by the output of the auxiliary power source. A pile driving machine that transmits the pressure input or drawing force of the press-fitting and pulling cylinder to the pile through the pile gripping device using the reaction force receiver as the press-fitting or pulling reaction force. Pile driving method characterized by driving into or pulling out.
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| JP2011023624A JP5483739B2 (en) | 2011-02-07 | 2011-02-07 | Pile driver and pile driving method using the same |
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| JP2011023624A JP5483739B2 (en) | 2011-02-07 | 2011-02-07 | Pile driver and pile driving method using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105735315A (en) * | 2016-05-09 | 2016-07-06 | 安徽恒坤地基基础工程有限公司 | Photovoltaic pile driver convenient to locate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5775899B2 (en) * | 2013-04-05 | 2015-09-09 | 調和工業株式会社 | Pile construction method using vibration pile punching machine |
| CN103541362B (en) * | 2013-11-11 | 2015-08-12 | 段宝荣 | A kind of extractor of hydraulic engineering |
| CN104153368B (en) * | 2014-07-07 | 2016-04-06 | 温州煜阳市政园林工程有限公司 | Vibrating hammer device |
| JP6534859B2 (en) * | 2015-05-21 | 2019-06-26 | ネクストエナジー・アンド・リソース株式会社 | Pile driving apparatus and pile driving method using the same |
| JP6491997B2 (en) * | 2015-11-26 | 2019-03-27 | 調和工業株式会社 | Vibration pile punching machine and pile driving and drawing method |
| CN105332376B (en) * | 2015-11-27 | 2017-06-20 | 太原科技大学 | Hydraulic mechanical hand-lifting stake clamping device and pile-drawing machine |
| JP6500145B2 (en) * | 2018-04-02 | 2019-04-10 | 調和工業株式会社 | Vibration pile punching machine and pile driving and drawing method |
| WO2020175269A1 (en) * | 2019-02-28 | 2020-09-03 | 株式会社技研製作所 | Pile press-in device and pile press-in method |
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| JPS5836125B2 (en) * | 1979-10-24 | 1983-08-06 | Sumitomo Kinzoku Kogyo Kk | |
| JPH06104973B2 (en) * | 1990-07-25 | 1994-12-21 | 調和工業株式会社 | Emergency hydraulic unit for Yatco |
| JPH09268557A (en) * | 1996-04-01 | 1997-10-14 | Chowa Kogyo Kk | Pile driving/drawing device |
| JP4543407B2 (en) * | 2003-12-01 | 2010-09-15 | 調和工業株式会社 | Vibration pile punching machine |
| JP2006194004A (en) * | 2005-01-14 | 2006-07-27 | Giken Seisakusho Co Ltd | Chuck device, pile jacking device, and pile jacking method |
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| CN105735315A (en) * | 2016-05-09 | 2016-07-06 | 安徽恒坤地基基础工程有限公司 | Photovoltaic pile driver convenient to locate |
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