JP2719324B2 - Pressure oil supply method and pressure supply mechanism in hydraulic vibratory pile punching machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibratory pile driving machine of a type that generates vibration by being supplied with pressure oil, and is used for driving a machine that is also used to apply vibration to pull out a pile. Related to the method of supplying pressure oil of the above, and the same device, the machine of the type rotated by a hydraulic motor,
The present invention can also be applied to a machine that generates vibration by a hydraulic piston.

[0002]

2. Description of the Related Art A hydraulic vibratory pile punching machine is a device that grips the upper end of a pile and applies vibration to the pile. Is driven into. In addition, the pile can be pulled out of the ground by lifting it while applying vibration to the driven pile. For this reason, the vibrating pile punching machine must have both a function of applying vibration to the pile and a function of applying a vertical force to the pile. In general, electricity or hydraulic pressure is used as an energy source for generating vibration in the vibrating pile punching machine. In the present invention, a vibrating pile punching machine that generates vibration by hydraulic pressure is applied. Hydraulic vibratory pile punching machines are roughly classified into a method of rotating an eccentric weight and a method of reciprocating a hydraulic piston. The eccentric weight is mounted on a rotating shaft and is driven to rotate by a hydraulic motor.

[0003] In any of the above systems, pressure oil for generating vibration must be supplied. In this case, the supply of pressure oil involves the return oil return.

FIG. 6 shows a conventional example of a vibrating pile punching machine in which a rotary shaft on which an eccentric weight is mounted is rotationally driven by a hydraulic motor. A part of a buffer support mechanism is broken, and a hydraulic cylinder is indicated by a broken line. FIG. In the drawing, reference numeral 1 denotes a vibrator, and an eccentric weight 1b is attached to each of a pair of rotating shafts 1a. A hydraulic motor 2 is arranged to rotationally drive the rotating shaft 1a, and a hydraulic hose 10 for supplying hydraulic energy to the hydraulic motor 2 is connected. In a hydraulic vibratory pile punching machine, a hydraulic hose for supplying hydraulic energy as described above,
As will be described later, a hydraulic hose for operating a hydraulic device for gripping a pile is used, so for convenience of explanation, a hydraulic hose for supplying hydraulic energy for generating vibration is called a main hydraulic hose, and the pile is chucked. The hydraulic hose for performing the operation is called a sub-hydraulic hose and is distinguished. For this reason, the hydraulic hose numbered "10" is referred to as a main hydraulic hose.

[0005] In this conventional example, a rotary shaft on which an eccentric weight is attached is rotated, and therefore, a hydraulic motor 2 for rotational driving is provided. Although not shown, a vibrating unit that reciprocates the hydraulic piston may be used. In either case, a main hydraulic hose 10 for supplying hydraulic energy is required. In FIG. 6, two main hydraulic hoses 10 are overlapped and one of them is hidden, but two main hydraulic hoses 10 for supplying the pressure oil and for returning the return oil are provided. A chuck 3 is provided below the vibration unit 1. The chuck 3 has a built-in hydraulic cylinder 11 and can hold and release the top of the pile 4.

A hanger 5 is attached to the vibrating section 1 via an elastic member to suspend the vibrating section 1 attached to the top of the pile 4 via the chuck 3 with a crane (not shown). ing. That is, four shafts 6 are attached so as to protrude downward from the hanger 5, and the shafts 6 are inserted into bearing holes of a bearing bracket 1 c fixed to the vibrating section 1, and have lower ends thereof. Seat 7
Is fixed. An upper spring 8 and a lower spring 9 made of a coil spring are fitted around the shaft 6. The upper spring is located between the hanger 5 and the bearing bracket 1 c, and the lower spring is located between the bearing bracket 1 c and the seat. 7 are respectively compression-interpolated.

The hydraulic cylinder 11 is operated by supplying and recirculating pressure oil to the auxiliary hydraulic hose 12, and the top of the pile 4 is gripped by the chuck 3, and a hook of a crane (not shown) is attached to the suspension ring 5 a of the hanger 5. When the pile 4 is set up on the ground by hanging, lifting and hanging, the pressure oil is supplied by the main hydraulic hose 10 to vibrate the vibrating section 1, and the pile receives the gravitational load and the vibration, and the pile is received in the ground. It sinks. In this case, the weight of the hanger 5 is included in the gravitational load. In addition, when the pile 4 is already driven into the ground, when the hook is hooked on the suspension ring 5a and the vibrating portion 1 is vibrated while applying a force in the lifting direction by a crane, the pile 4 moves upward from the ground. Pulled out.

During the driving and pulling-out operations described above, the vibrating portion 1, the chuck 3, the stake 4, and the hydraulic motor 2 vibrate vigorously up and down, but the hanger 5 does not vibrate violently because it is buffered by the spring. However, since the hanger 5 receives the transmission of vibration via the upper spring 8 and the lower spring 9, the hanger 5 vibrates up and down, though not as much as the vibrator 1. The main hydraulic hose 10 and the auxiliary hydraulic hose 12 shown in FIG. 6 are long members of several tens of meters, and are connected to a hydraulic pump or a hydraulic tank via an operation valve (not shown).

[0009]

The main hydraulic hose 10 of the hydraulic vibrating pile punching machine shown in FIG. 6 is a long member (several tens of meters), and the vibrating portion 1 is provided near one end thereof. And a large part of its length is suspended in the air, so that a vibration similar to that of a string is generated. As a result, the main hydraulic hose 10 is positioned at the portion corresponding to the antinode of the vibration (for example, in the vicinity of the point a indicated by a cross in FIG. 6).
May be damaged, and in fact, its service life is short. For the same reason, the auxiliary hydraulic hose 12 may be damaged,
Short service life. Further, the main hydraulic hose and the auxiliary hydraulic hose are long members, respectively. Not only does the handling of these hoses require a great deal of labor when transporting the vibratory pile driving machine, but also the handling of the Although it is not uncommon to damage such objects, it is not expected that damage due to improper handling can be prevented only by training and training of workers because it is heavy. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a pressure oil feeding method and a mechanism capable of preventing breakage of a hydraulic hose in a hydraulic vibratory pile punching machine.

[0010]

In order to achieve the above object (prevention of breakage of a hydraulic hose), a method according to the present invention comprises a vibrating section that generates vibration by hydraulic pressure and a member having elasticity. A method for supplying pressure oil for driving to a hydraulic vibrating pile punching device comprising a hanger supporting an upper vibrating section, wherein high pressure oil is supplied to the vibrating section and return oil is supplied. A portion of the main hydraulic hose, which is closer to the vibrating portion than the center in the length direction, is engaged with the hanger so that the vibration of the vibrating portion is closer to the center than the engaging portion of the main hydraulic hose. It is characterized in that transmission to a part is reduced.

Further, the pressure oil supply mechanism of the present invention configured to carry out the above method supports the vibrating section that generates vibration by hydraulic pressure and the vibrating section via an elastic member. A mechanism for supplying pressure oil for driving to a hydraulic vibrating pile punching device having a hanger having a main hydraulic hose for supplying high-pressure oil to the vibrating section and for returning oil to return. A portion closer to the vibrating portion than the center in the length direction is engaged with the hanger.

When the method of the present invention is carried out by using the mechanism of the present invention described above, the hanger to which the main hydraulic hose is engaged is buffered by the elastic member with respect to the vibrating section. It does not vibrate violently like the vibrator. For this reason, when viewed from the point where the main hydraulic hose is attached to the vibrating section (or the point where the main hydraulic hose is attached to the hydraulic motor), intense vibration is not transmitted to the area farther than the place where the main hydraulic hose is attached to the hanger. There is no danger of this area being damaged by vibration. Violent vibration occurs between the point where the main hydraulic hose is attached to the vibrating section (or hydraulic motor) and the point where the main hydraulic hose is engaged with the hanger. There is no particular difficulty in avoiding resonance in consideration of the vibration frequency of the vibration part.

When the present invention is carried out and the main hydraulic hose is fastened to the hanger, a corresponding effect (prevention of breakage due to vibration) can be obtained even if it is fastened directly. If the attachment is performed via the vibration isolating member, the damage prevention effect can be further ensured. When implementing the present invention, if the main hydraulic hose is divided and easily connected by a hydraulic coupler, it is possible to remove most of the main hydraulic hose from the vibrating part and transport it when transporting a hydraulic vibratory pile punching machine. It is easy to handle because it can be done, and is effective in preventing damage to the main hydraulic hose due to poor handling.

Further, when the present invention is implemented to prevent the main hydraulic hose from being damaged, if the vicinity of the place where the sub-hydraulic hose is attached to the chuck is engaged with the hanger, the main hydraulic hose can be prevented from being damaged. Since the effect of preventing damage to the auxiliary hydraulic hose is also obtained, the practical effect is further increased.
When the sub-hydraulic hose is attached to the hanger via a vibration isolating member having rubber elasticity, the effect of preventing breakage due to vibration of the sub-hydraulic hose can be further ensured. When carrying out the present invention, if the auxiliary hydraulic hose is divided and connected easily by a hydraulic coupler, it is possible to separate and transport most of the auxiliary hydraulic hose when transporting the hydraulic vibratory pile punching machine. This makes it possible to prevent the auxiliary hydraulic hose from being damaged due to poor handling.

A hydraulic coupler for dividing and connecting the sub-hydraulic hose is a. A hydraulic socket attached to the hanger via a vibration isolating member; A pipe joint base attached to a divided end of the divided sub-hydraulic hose has a structure that “the sub-hydraulic hose is attached to the hanger via a vibration isolating member”; Splitting and connecting the hydraulic hose easily and detachably is achieved with a simple and inexpensive configuration, convenient for handling, and more effective for preventing damage due to poor handling. When the above effects are combined, breakage of the hydraulic hose in the hydraulic vibratory pile punching machine is almost completely prevented.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS. FIG.
1 shows a rotary vibration exciter equipped with one embodiment of a pressure oil supply mechanism of the present invention configured to carry out a pressure oil supply method in a hydraulic vibratory pile punching machine according to the present invention, and partially cuts. FIG. This embodiment is an improvement obtained by applying the present invention to the conventional example shown in FIG.
This is an example, and the vibrating part 1, hydraulic motor 2, chuck 3, pile 4, hanger 5, shaft 6, receiving seat 7, upper spring 8, lower spring 9, and hydraulic cylinder 11, which are denoted by the same reference numerals as those in FIG. Are the same or similar components as in the conventional example.

The main hydraulic hose 10 is drawn only one because it overlaps in the depth direction of the paper, and the other one is hidden, but the number is two, and one end of each is connected to a hydraulic motor. 2 are connected. The main hydraulic hose 10
That the number of installations is two appears in FIG. 2 described later. In the present embodiment, the vibration is generated by the rotary vibration generator 1 having the eccentric weight 1b and the rotating shaft 1a. Therefore, one end of the main hydraulic hose 10 is connected to the hydraulic motor 2. Although not shown, in the case of a system in which vibration is generated by a hydraulic piston type vibrator, one end of the main hydraulic hose 10 is directly connected to the vibrator. In any of the above cases, the main hydraulic hose 10
Is connected to a vibrating unit or a device (for example, a hydraulic motor) which is coupled to the vibrating unit and rigidly and violently vibrates.

On the other hand, since the hanger 5 is elastically supported by the vibrating portion 1 via the upper spring 8 and the lower spring 9, it does not vibrate violently unlike the vibrating portion 1 and the hydraulic motor 2. . The shaft 6 attached to the hanger 5 also does not vibrate violently.

The holding member 15 of the main hydraulic hose 10 is attached to the shaft 6 via a vibration isolating member 16, and the main hydraulic hose 10 is supported by the holding member 15. In this embodiment, a portion closer to the vibration portion than the center in the length direction of the main hydraulic hose 10 is engaged with the hanger 5 via the vibration isolating member 16 and the holding member 15 as described above. .

FIG. 2 is a side view in which a part of the rotary exciter according to the embodiment shown in FIG. 1 is cut and drawn, and two main hydraulic hoses overlapped in FIG. Each is appearing. The two main hydraulic hoses 10
The details of the structure attached to the shaft 6 via the holding member and the vibration isolating member will be described below. FIG. 3 is a partially enlarged detailed view of the embodiment shown in FIG. 2 described above, depicting the vicinity of a place where two main hydraulic hoses are attached to a shaft, and adding subdivided reference numerals. It is. The two main hydraulic hoses 10 are held by holding members 15. Although it is difficult to sufficiently understand the holding state by the holding member in FIG. 3, it will be described in detail later with reference to FIG. FIG. 3 shows the lower end of the shaft 6 (the upper end of which is attached to the hanger 5; see FIG. 1) and the cross section of the receiving seat 7 fixed to the shaft. Main hydraulic hose 10
The two ends of the holding member 15 holding are mounted on the receiving seat 7 via rubber vibration isolating members 16a and 16b, respectively. In this embodiment, the shaft 6 and the seat 7 are elastically supported by the vibrating portion 1 via the upper spring 8 and the lower spring 9 (see FIG. 2). It is a component that does not. The main hydraulic hose 10 is supported by the above-mentioned seat 7 which does not vibrate violently via the vibration isolating members 16a and 16b. Not subject to vibration. Therefore, there is no possibility of breakage at a position corresponding to the antinode of the resonance phenomenon.

The distance between the point A where the main hydraulic hose 10 is connected to the hydraulic motor 2 and the point B held by the holding member 15 is the total length of the main hydraulic hose (several tens of meters). It is much shorter than. Therefore, the resonance frequency of the main hydraulic hose in the portion stretched between the two points A and B is relatively high. This resonance frequency has two points A,
The physical property and tension of the main hydraulic hose are not limited to the distance between B alone. The vibration frequency of the vibrating section 1 in this embodiment is 3600 cycles per minute, which is referred to as an ultra-high frequency in this technical field. However, no resonance phenomenon of the main hydraulic hose between the two points A and B was observed. In a frequency band lower than this, there is no fear that resonance occurs in the main hydraulic hose. FIG. 4 is a plan view of the pressure oil supply mechanism obtained by improving the embodiment shown in FIGS. 1 to 3 described above, which is cut by a horizontal plane passing through the receiving seat, and is a plane H- shown in FIG. This corresponds to an H sectional view. Holding member 1 described above
5, two holding members 15 each having a concave cylindrical surface-shaped groove to be fitted to the main hydraulic hose 10 as shown in FIG.
a and 15b, and the two main hydraulic hoses 10 are sandwiched between the two holding members. These holding members 15a, 15b are attached to the receiving seat 7 at both ends via rubber vibration isolating members 16a, 16b, respectively.

(See FIGS. 1 and 2) The main hydraulic hose 10 is supported by a holding member 15 (that is, indirectly engaged with the hanger 5).
Rather, the main hydraulic hose is divided at a location closer to the center in the length direction. Considering this from the other side,
It is divided at a location opposite to the vibrating section 1 when viewed from an indirect attachment point to the hanger 5. Attach a hydraulic coupler to the split end of the split main hydraulic hose. As will be described later, the auxiliary hydraulic hose 12 is also divided and the hydraulic coupler is mounted, so that the hydraulic coupler mounted on the main hydraulic hose is referred to as a main hydraulic coupler, and the hydraulic coupler mounted on the auxiliary hydraulic hose is referred to as a sub hydraulic coupler for distinction. . In the present embodiment, a main hydraulic coupler 13 is attached to a divided end of the main hydraulic hose 10 so as to be detachably connected. In the present embodiment, a pipe joint having a self-sealing function is used as the hydraulic coupler. It is preferable to have a self-sealing function because the handling operation is easy.

FIG. 2 shows two main hydraulic hoses 10. Each of these two main hydraulic hoses is divided and connected by a main hydraulic coupler. However, since one of the two main hydraulic hoses is cut off in the middle and drawn, the main hydraulic Only appear. As described above, when the main hydraulic hose 10 is divided and detachably connected, when transporting the hydraulic vibrating pile punching device, most of the main hydraulic hose is removed from the vibrating section and handled. In addition to being convenient, the main hydraulic hose can be prevented from being damaged due to improper handling. For example, when mounted on a truck, a part of the main hydraulic hose is forcibly bent and placed under the vibration unit 1, or when the truck shakes and the vibration unit 1 jumps on the truck bed, the main hydraulic hose is connected to the main hydraulic hose. There is no fear of giving an excessive tensile force.

As shown in FIGS. 1 and 2, the auxiliary hydraulic hose 12 connected to the hydraulic cylinder 11 of the chuck 3 is also divided in the vicinity of the connection point of the auxiliary hydraulic hose 12 to the hydraulic cylinder 11, It is detachably connected by the auxiliary hydraulic coupler 14. It is desirable to use a pipe joint having a self-sealing function as the auxiliary hydraulic coupler. When the sub-hydraulic hose 12 is divided and easily connected to and detached from the main hydraulic hose as in this embodiment, the sub-hydraulic hose 12 is easy to handle, as in the case of the main hydraulic hose described above. The auxiliary hydraulic hose is prevented from being damaged.

In the embodiment shown in FIGS. 1 and 2, the connection point A of the main hydraulic hose 10 to the hydraulic motor
At one location between the main hydraulic coupler 13 and the main hydraulic coupler 13, the main hydraulic hose was held on the hanger 5 via the holding member 15 and the vibration isolating member 16. Similarly, it is desirable that the auxiliary hydraulic hose 12 be supported at one location so that the vibration of the vibrating section 1 is not transmitted. This will be described below with reference to FIG. Two sub-hydraulic hoses are provided, each of which is divided into a sub-hydraulic hose / short 12a and a sub-hydraulic hose / long 12b, and each of the divided ends is provided with a fitting for a pipe joint. on the other hand,
The holding member 15b of the main hydraulic hose is provided with the auxiliary hydraulic hose
Hydraulic sockets 17a, 17 that can be connected to fittings for pipe joints mounted on each of the short and auxiliary hydraulic hoses / long
b is installed. When the sub-hydraulic hose / short 12a pipe fitting base and the sub-hydraulic hose / long 12b pipe fitting base are connected to the hydraulic socket, the divided sub-hydraulic hoses are detachably connected to each other, and 5 is held via vibration isolating members 16a and 16b. Thereby, the auxiliary hydraulic hose is prevented from being damaged due to resonance with a simple configuration, and is also prevented from being damaged due to improper handling.

FIG. 5 shows one embodiment of a hydraulic vibratory pile punching machine according to an embodiment different from the embodiment shown in FIGS.
It is the front view which showed the example and the fracture-proof support structure part of the hanger was broken, and was drawn typically. This embodiment (FIG. 5) simplifies the above-described embodiment and clearly shows the basic structure, and is a schematic view corresponding to FIG. 1 in the above-described embodiment, and is the same as FIG. Those denoted by reference numerals are the same as or similar to those in FIG. The technical idea that constitutes this embodiment is that the hanger 5 does not violently vibrate because the hanger 5 is connected to the vibrator 1 by vibration damping by the upper spring 8 and the lower spring 9, if not completely. And a considerable effect (prevention of breakage of the hydraulic hose) with a simple structure.

Main hydraulic hose 10 and auxiliary hydraulic hose 12
Are divided and the main hydraulic coupler 13 and the auxiliary hydraulic coupler 14 are detachably connected to each other to facilitate handling, as in the above-described embodiment (FIGS. 1 and 2). One point between the connection point A of the main hydraulic hose 10 to the hydraulic motor 2 and the main hydraulic coupler 13 is fixed to the hanger 5 by the holder 5b. As a result, the main hydraulic coupler 13 is moved from the engagement point C of the main hydraulic hose 10 to the hanger 5.
Since the side portion (most of the main hydraulic hose 10) is damped, the risk of breakage is significantly reduced. Similarly, for the auxiliary hydraulic hose 12, one intermediate position between the auxiliary hydraulic coupler 14 and a connection point D to the chuck 3 (specifically, a connection point to the hydraulic cylinder 11 (see FIG. 1) for operating the chuck) D is a holding member. 5b engages with the hanger 5. Thereby, breakage due to vibration of the auxiliary hydraulic hose 12 can be remarkably reduced, and the service life is significantly increased.

In the embodiment shown in FIG. 5, the connection point A of the main hydraulic hose 10 to the hydraulic motor 2 and the holder 5
The distance between the connection point D of the auxiliary hydraulic hose 12 with respect to the chuck 3 and the holder 5b is greater than the distance between the holder 5b. Therefore, the resonance frequency of the auxiliary hydraulic hose 12 between the connection point D and the holder 5b is reduced. In order to avoid this, it is recommended that one place between the connection point D and the sub-hydraulic coupler 14 be engaged with the seat 7 by the holder 18 as shown by the solid line in FIG.

[0029]

When the method of the present invention is carried out by using the mechanism of the present invention, the hanger to which the main hydraulic hose is attached is:
Since the vibration part is buffered by the elastic member, it does not vibrate violently unlike the vibration part. For this reason, when viewed from the point where the main hydraulic hose is attached to the vibrating section (or the point where the main hydraulic hose is attached to the hydraulic motor), intense vibration is not transmitted to the area farther than the place where the main hydraulic hose is attached to the hanger. There is no danger of this area being damaged by vibration. Violent vibration occurs between the point where the main hydraulic hose is attached to the vibrating section (or hydraulic motor) and the point where the main hydraulic hose is engaged with the hanger. There is no particular difficulty in avoiding resonance in consideration of the vibration frequency of the vibration part.

When the main hydraulic hose is fastened to the hanger by implementing the present invention, a corresponding effect (prevention of breakage due to vibration) can be obtained by directly fastening the hose, but the rubber elasticity is reduced. If the attachment is performed via the vibration isolating member, the damage prevention effect can be further ensured. When implementing the present invention, if the main hydraulic hose is divided and easily connected by a hydraulic coupler, it is possible to remove most of the main hydraulic hose from the vibrating part and transport it when transporting a hydraulic vibratory pile punching machine. It is easy to handle because it can be done, and is effective in preventing damage to the main hydraulic hose due to poor handling.

Further, when the present invention is implemented to prevent the main hydraulic hose from being damaged, if the vicinity of the place where the auxiliary hydraulic hose is attached to the chuck is engaged with the hanger, the main hydraulic hose can be prevented from being damaged. Since the effect of preventing the breakage of the auxiliary hydraulic hose can be obtained, the practical effect is further enhanced. When the sub-hydraulic hose is attached to the hanger via a vibration isolating member having rubber elasticity, the effect of preventing breakage due to vibration of the sub-hydraulic hose can be further ensured. When carrying out the present invention, if the auxiliary hydraulic hose is divided and easily connected by the hydraulic coupler, it is possible to separate and transport most of the auxiliary hydraulic hose when transporting the hydraulic vibration pile punching machine. Handling becomes easy, and breakage of the auxiliary hydraulic hose due to poor handling can be prevented.

A hydraulic coupler for dividing and connecting the sub-hydraulic hose is a. A hydraulic socket attached to the hanger via a vibration isolating member; A pipe joint base attached to a divided end of the divided sub-hydraulic hose has a structure that “the sub-hydraulic hose is attached to the hanger via a vibration isolating member”; Splitting and connecting the hydraulic hose easily and detachably is achieved with a simple and inexpensive configuration, convenient for handling, and more effective for preventing damage due to poor handling. When the above-mentioned effects are combined, breakage of the hydraulic hose in the hydraulic vibratory pile punching machine is almost completely prevented, and it has an excellent practical effect, contributing to the advancement of the vibratory pile punching technology. It is.

[Brief description of the drawings]

FIG. 1 shows a rotary vibration exciter equipped with one embodiment of a pressure oil supply mechanism of the present invention configured to carry out a pressure oil supply method in a hydraulic vibratory pile punching machine according to the present invention;
It is the front view which cut and drawn partially.

FIG. 2 is a side view in which a part of the rotary vibration exciter according to the embodiment shown in FIG. 1 is cut and drawn, and each of two main hydraulic hoses overlapping in FIG. 1 appears. ing.

FIG. 3 is a partially enlarged detailed view of the embodiment shown in FIG. 2 described above, depicting the vicinity of a place where two main hydraulic hoses are attached to a shaft; It is.

FIG. 4 is a plan view of the improved pressure oil supply mechanism obtained by modifying the embodiment shown in FIGS. 1 to 3 by cutting along a horizontal plane passing through a receiving seat, and is taken along line HH shown in FIG. 3; It corresponds to a sectional view.

5 shows an example of a hydraulic vibratory pile punching machine according to an embodiment different from the embodiment shown in FIGS. 1 to 4 described above, in which the anti-vibration support structure of the hanger is cut away and drawn schematically. It is a front view.

FIG. 6 is a front view showing a conventional example of a vibrating pile punching machine in which a rotary shaft to which an eccentric weight is attached is rotationally driven by a hydraulic motor, in which a part of a buffer support mechanism is broken and a hydraulic cylinder is indicated by a broken line. It is.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Exciting part, 1a ... Rotary shaft, 1b ... Eccentric weight, 1c ... Bearing bracket, 2 ... Hydraulic motor, 3 ... Chuck, 4 ...
Pile, 5 ... Hanger, 5a ... Hanging ring, 5b ... Holder, 6 ... Shaft, 7 ... Seat, 8 ... Upper spring, 9 ... Lower spring, 10 ... Main hydraulic hose, 11 ... Hydraulic cylinder,
12: Secondary hydraulic hose, 12a: Secondary hydraulic hose, short, 12
b: Sub hydraulic hose / length, 13: Main hydraulic coupler, 14 ...
Secondary hydraulic coupler, 15, 15a, 15b ... holding member, 1
6, 16a, 16b: anti-vibration member, 17a, 17b: hydraulic socket.

Claims (14)

(57) [Claims] 1. A hydraulic vibrating pile punching device including a vibrating portion that generates vibration by hydraulic pressure and a hanger that supports an upper vibrating portion via an elastic member. In the method for supplying pressure oil, a portion of the main hydraulic hose (10) for supplying high-pressure oil to the vibrating portion and for returning the return oil is located closer to the vibrating portion than the center in the length direction. Wherein the vibration of the vibrating portion is reduced from being transmitted to a portion closer to the center than the engaging portion of the main hydraulic hose. Supply method. 2. The main hydraulic hose is attached to a hanger via a rubber-elastic vibration isolating member (16) with respect to the hanger or a member having high rigidity attached to the hanger. The pressure oil supply method in the hydraulic vibratory pile punching machine according to claim 1. 3. The main hydraulic hose is divided at a position closer to the other end of the main hydraulic hose than a place where the main hydraulic hose is engaged, and a hydraulic coupler is attached to each of the divided ends. The pressure oil supply method in the hydraulic vibratory pile punching machine according to claim 1, wherein the divided portions are detachably connected. 4. A hydraulic cylinder (11) for actuating a chuck (3) provided in said vibrating section, pressure oil is supplied by an auxiliary hydraulic hose (12), and a hydraulic cylinder of said auxiliary hydraulic hose is provided. 4. The vicinity of the connection point to the hanger is engaged with the hanger, and the vibration of the chuck reduces transmission to the vicinity of the central portion of the auxiliary hydraulic hose. Pressure oil supply method in the described hydraulic vibratory pile punching machine. 5. A sub-hydraulic hose for supplying pressure oil to the hydraulic cylinder is attached to a hanger or a member having high rigidity attached to the hanger via a vibration-proof member having rubber elasticity. The pressure oil supply method in the hydraulic vibratory pile punching machine according to claim 4. 6. The sub-hydraulic hose is divided in the vicinity of a position where the sub-hydraulic hose is engaged or at a position closer to the other end of the sub-hydraulic hose than the position where the sub-hydraulic hose is engaged. The pressure oil supply method for a hydraulic vibratory pile punching machine according to claim 4 or 5, wherein a hydraulic coupler is attached to an end of the hose, and the divided portions are detachably connected. 7. A pipe joint base is attached to each of the divided ends of the divided sub-hydraulic hoses, and the hanger or a member attached to the hanger via a vibration isolating member. A hydraulic socket is installed, and a base of the divided sub-hydraulic hose is detachably connected to the hydraulic socket, and the divided sub-hydraulic hoses are connected to each other. Item 6. A method for supplying pressure oil in a hydraulic vibratory pile punching machine according to item 6. 8. A hydraulic vibrating pile punching device including a vibrating portion that generates vibration by hydraulic pressure and a hanger that supports the vibrating portion via an elastic member. In the mechanism for supplying pressure oil, a portion of the main hydraulic hose (10) that supplies high-pressure oil to the vibrating section and recirculates the return oil is closer to the vibrating section than the center in the length direction. A pressure oil supply mechanism in a hydraulic vibratory pile punching machine, wherein the pressure oil supply mechanism is attached to a hanger. 9. A holding member (15), wherein the main hydraulic hose is a holding member.
And the holding member is fixed to the hanger or a rigid member attached to the hanger via a vibration-proof member having rubber elasticity. A pressure oil supply mechanism in the hydraulic vibratory pile punching machine according to claim 8. 10. The main hydraulic hose is divided at a position closer to a hydraulic pressure source or an oil tank than a position where the main hydraulic hose is engaged, and each of the divided main hydraulic hoses is divided. The pressure oil supply mechanism in the hydraulic vibratory pile punching machine according to claim 1 or 2, wherein the hydraulic oil pilers are detachably connected to each other by a hydraulic coupler. 11. A chuck (3) for gripping a pile below the vibrating portion and a hydraulic cylinder (11) for operating the chuck are provided, and pressure oil is supplied to the hydraulic cylinder to return oil. A sub-hydraulic hose (12) to be recirculated is connected, and a portion closer to the other end of the sub-hydraulic hose than a connecting portion of the sub-hydraulic hose to the hydraulic cylinder is fixed to the hanger. The pressure oil supply mechanism in the hydraulic vibratory pile punching machine according to any one of claims 8 to 10, characterized in that: 12. A holding member is supported via a vibration-proof member having rubber elasticity with respect to the hanger or a rigid member attached to the hanger. The pressure oil supply mechanism in the hydraulic vibratory pile punching machine according to claim 11, wherein the pressure oil supply mechanism is held by a holding member. 13. The sub-hydraulic hose is divided at a position near an anchoring point or at a position closer to the other end of the sub-hydraulic hose than the engaging point. The pressure oil supply mechanism in the hydraulic vibratory pile punching machine according to claim 12, wherein the sub hydraulic hoses are detachably connected to each other by a hydraulic coupler. 14. A pipe joint base is mounted on each of the divided ends of the divided sub-hydraulic hoses, and is mounted on the hanger or the hanger via a vibration isolating member. A hydraulic socket is installed on the member, and the base of the divided sub-hydraulic hose is detachably connected to the hydraulic socket, and the divided sub-hydraulic hoses are connected to each other. Claim 1
3. A pressure oil supply mechanism in the hydraulic vibratory pile punching machine described in 3.