JP2753211B2 - Apparatus and method for locking rotation of pile - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of driving a pile into a ground by using a vibrating pile punching machine or pulling out a pile driven into the ground by raising a chuck holding the pile. The present invention relates to a device for locking the rotation of the chuck so as to be able to be braked / released, and a method for locking the same in a case where the chuck is rotatably mounted around a vertical axis.

[0002]

2. Description of the Related Art FIG. 8 shows a state in which a pile is gripped by a vibrating pile punching machine, is suspended by a crane, and the pile is driven into the ground while vibrating the pile. A schematic front view in a state where the pile is pulled out while applying vibration to the pile is almost the same as this figure. Exciter 1
The chuck 2 is installed below the
Is gripping the top of the pile 3. The exciter 1 is suspended from the tip of a crane boom 5a by a hook 5b via a hanger 4. 5 is a crane having a self-propelled function. The vibrator 1 includes a type in which an eccentric weight is rotated to generate vertical vibration, and a type in which a hydraulic piston is moved up and down to generate vertical vibration. In either case, the generated vibration is transmitted to the pile 3 via the chuck 2. When the above-mentioned pile 3 vibrates, the static friction with the ground is cut and it becomes a state of dynamic friction.
It can sink into the ground by its own weight (specifically, the sum of the weight of the pile and the gravitational load of the shaker), and if it is lifted by the crane 5 with relatively little force, it is driven into the ground. Pile 3 is pulled out.

FIG. 9 is a view for explaining a method of arranging and driving sheet piles, which are a kind of pile,
(A) is a plan view illustrating a state where four of a large number of sheet piles are connected to each other, and (B) is a plan view depicting a planning line set around a construction area. . (A) See FIG. Joints 6a and 6b are provided on both sides of the sheet pile 6 in the width direction, and the adjacent sheet piles are connected with the joint 6a, the joint 6a and the joint 6a.
b and the joint 6b are arranged in a 180-degree inverted position so as to engage with each other. However, the sheet pile is symmetrical in the width direction with respect to the center in the longitudinal direction, and the joints 6a and 6
“b” is a code that is distinguished for convenience, has no essential difference between the two, and can be used inverted.

In general, sheet piles arranged in a temporary storage area for materials in civil engineering work are arranged in the same direction (see FIG. 8).
In order to lift (in this case, the sheet pile) and arrange and drive as shown in FIG. 9A, it is necessary to rotate the pile 3 at least 180 degrees around the vertical axis Z-Z. It is. Although there are many types of piles used for civil engineering work, in the present invention, among the various types of piles, piles for driving are applied, and among the piles to be driven, those that are not rotationally symmetric (specifically, Specifically, steel pipe piles and sheet piles having joints are applied. Hereinafter, in the present invention, when simply referring to a pile, it means a driving pile that is not rotationally symmetric.

The necessity of rotating a pile suspended by a crane about a vertical axis also occurs in the following case. (See FIG. 9B). When a planning line 7 is set around the construction area and steel pipe piles (not shown) having joints are arranged and driven, for example, when a large number of steel pipe piles are arranged along the planning line 7 as indicated by an arrow a. When the vehicle reaches the corner c, the traveling direction must be changed by 90 degrees as shown by the arrow b. In this case, the crane 5 (FIG. 9), which has been in a posture convenient for the arrangement in the direction of the arrow a, is changed to the arrow b in the same posture.
In order to arrange the steel pipe piles in the direction, it is desired to rotate the chuck 2 about a vertical axis. This is because even if the crane 5 is a self-propelled type, the operation of contracting the outrigger of the crane once and moving the outrigger and then remounting the outrigger requires a lot of time and labor. If a crane falls down, it will cause a serious accident, so determining its working posture requires a high level of knowledge and skill in checking the hard ground and adjusting the level of the vehicle body. Relocation of the crane is not easy.

On the other hand, whether or not the relative rotation of the exciter 1 and the chuck 2 about the vertical axis is possible depends on the type of the exciter, and the method of rotating the eccentric weight (rotary) The vibrator is generally not rotatable, and the method of reciprocating the hydraulic piston is generally free to rotate. In view of this, a technique for rotatably mounting a chuck on a vibration exciter with a rotary vibrator as an object to be applied is known (for example, Japanese Utility Model Publication No. 46-29020). FIG. 10 shows a construction of a driving sheet pile chuck which is made rotatable.
It is sectional drawing which cut | disconnected and drawn the principal part of the chuck rotation support apparatus based on No. 9020 with a perpendicular surface. The shaft member 8 is attached to the chuck 2 holding the pile 3, and a male screw 8 a is formed at a tip end thereof. On the other hand, below the shaker 1,
A bearing bracket 9 having a bearing hole 9a is fixed, the shaft member 8 is inserted into the bearing hole 9a, and a locking nut 10 is screwed to a male screw 8a of the shaft member 8 to perform a retaining function. I have. A bearing 11 is interposed between the bearing bracket 9 and the shaft member 8 so as to smoothen the rotation. Numeral 12 denotes a key plate for preventing the locking nut 10 from rotating, and numeral 13 denotes a mounting bolt for the key plate.

In addition, when a hydraulic piston type vibrator is used, the chuck rotates freely, so that it is necessary to prevent the rotation of the chuck holding the pile in order to perform an accurate pile driving operation. Become. From such a viewpoint, a device that prevents rotation of the chuck around its vertical axis without suppressing vibration is known (for example, Japanese Patent Publication No. H10-10528).
It is. FIG. 11 is a side external view showing an example of a piston rotation preventing device according to Japanese Patent Publication No. Hei 4-10528 configured to prevent rotation of the chuck with respect to the exciter.
The exciter 14 shown in FIG. 11 is a hydraulic piston type, and the exciter 14 itself does not restrict the rotation of the chuck 2. FIG. 12 is a vertical sectional view of the hydraulic piston type exciter provided with the rotation preventing device shown in FIG. In the exciter 14, a hydraulic piston 14b is accommodated in a hydraulic cylinder 14a fixed to a reaction force weight 15, and the chuck 2 is fixed to the hydraulic piston 14b. The reaction weight 15 is attached to the hanger 4 via the cushioning rubber 19. The hanger 4 is suspended by hanging a hook (not shown) of a crane on a suspension ring 4a. Hydraulic piston 14b
When the hydraulic pressure is applied to the stake, the chuck fixed to the stake moves up and down to move the pile 3 up and down. The arm / part 17 fixed to the reaction force weight 15 and the arm / upper 16 fixed to the chuck 2 substantially horizontally oppose each other. An elastic member 18 is disposed at the center. The above elastic member 18
Has a columnar shape, and the two ends of the
6 and the arm / part 17 are fixed. This allows
The vertical vibration of the chuck 2 relative to the reaction weight 15 is absorbed by the deformation of the elastic member 18 in the shearing direction, and the relative rotation about the vertical axis is limited by the compressive stress and the tensile stress of the elastic member 18. Since the block is blocked, the rotation angle position of the pile 3 held by the chuck 2 around the vertical axis is fixed.

[0008]

As shown in FIG. 10, when the rotation of the chuck 2 around the vertical axis with respect to the exciter 1 is made free as shown in FIG. 10, the crane is suspended via the chuck 2 (see FIG. 8). The work of rotating the pile 3 held about the vertical axis Z-Z is facilitated, but the angular position of the pile rotated to the desired angular position is unstable, so that accurate driving work is required. Difficult to accomplish. However, FIGS. 10 and 11
If the rotation of the pile 3 around the vertical axis is suppressed as shown in FIG. 9B, the problem described above with reference to FIGS. 9A and 9B occurs, and the piles having joints are arranged side by side. It will be very difficult to perform the installation work. Therefore, there is a demand for the development of a technique capable of freely rotating the pile 3 suspended by the crane 5 around the vertical axis Z and locking the rotation.

In order to simply support rotatably about a vertical axis or lock so as to be able to brake and release, it is sufficient to apply known mechanical means. Since there are special working conditions as described below, the rotation of the pile cannot be locked by a known technique. i) The rotation / lock mechanism must not only receive intense vertical vibrations, but also transmit the vertical vibrations generated by the vibrator to the chuck. For example, in the known technique shown in FIG. 10, a clearance is required between a rolling surface of the bearing 11 and a rolling element (ball or roller) so that the bearing 11 can rotate. However, if there is play, the rolling surface is hit, so that the service life of the bearing is significantly reduced. In addition, vibration is absorbed by the play in the bearing rolling surface, and the vertical vibration generated by the vibrator is attenuated while being transmitted to the chuck. ii) As easily understood from FIG. 8, when the pile 3 needs to be rotated around the vertical axis Z, the pile 3 is suspended in the air (the pile 3 is underground). After being driven into the stake, the stake 3 cannot be turned). Accordingly, in this state, the vibration exciter 1 and the chuck 2 are located at a high place where the worker on the ground cannot reach. For this reason, it is necessary that the lock related to the rotation of the chuck 2 and the release thereof can be remotely controlled.

[0010] It is an object of the present invention to provide strength and durability capable of transmitting vibration to the chuck without damping the vertical vibration generated by the vibrator, and to remotely control the switching between lock and release. To provide a device for locking the rotation of the pile. Since the pile is gripped by the chuck, locking the rotation of the pile has the same meaning as locking the rotation of the chuck. Claim 2
The object of the invention of the present invention is, in addition to the object of the invention of claim 1, that it is not necessary to continuously supply the operating force during the operation of driving and pulling out the pile, and it is sufficient to supply the operating force only at the start of the operation. It is to provide a device for locking rotation. A third object of the present invention is that, in addition to the first object of the present invention, a large braking force can be generated by a relatively small operating force, and locking can be reliably performed in both the turning direction and the vertical direction. Another object of the present invention is to provide a device for locking the rotation of a pile, which is more excellent in durability. The object of the invention of claim 4 is, in addition to the object of the invention of claims 1 and 2, an apparatus for locking the rotation of the pile, which can easily rotate the pile gripped by the chuck with a relatively small force. It is to provide.

The object of the invention of claim 5 is, in addition to the objects of the invention of claims 1 to 4, a device for locking the rotation of a pile, which can rotate the chuck by remote control without requiring labor. It is to provide. The object of the invention of claim 6 is, in addition to the objects of the invention of claims 1 to 5, the handling of the means for supplying power for performing the lock operation / release, especially the handling at the time of transportation is easy, and An object of the present invention is to provide an apparatus for locking the rotation of a pile, which can prevent the wear due to poor handling of the pile. The object of the invention of claim 7 is, in addition to the object of claim 6, an apparatus for locking the rotation of a pile, which can prevent breakage due to resonance of a means for supplying power for performing lock operation / release. It is to provide.

An object of the present invention is to adjust the rotation angle position of the chuck with respect to the exciter, and to transmit the vertical vibration generated by the exciter to the chuck. Another object of the present invention is to provide a method for locking the rotation of the pile, which can remotely control the operation and release of the lock. The object of the ninth aspect of the present invention is that, in addition to the object of the eighth aspect, there is no need to continuously supply the operating force for locking during the period of driving and pulling out the pile, and at the start of the operation. It is an object of the present invention to provide a method for locking the rotation of a pile, which suffices to supply only an operation force. The object of the tenth aspect of the present invention is that, in addition to the object of the eighth aspect, a relatively small operation force exerts a large braking force, and in particular, a rotation of a pile capable of reliably transmitting vertical vibration. The purpose is to provide a way to lock. The object of the invention of claim 11 is that, in addition to the objects of the invention of claims 8 and 9, the force required to turn the chuck in the unlocked state is small, and the effect of transmitting the vibration in the vertical direction is reliable. It is to provide a reliable locking method of the rotation. The object of the invention of claim 12 is, in addition to the object of the invention of claims 8 to 11, in that no labor is required for the rotation operation of the chuck in the unlocked state, and there is no danger of causing personal injury, Further, it is an object of the present invention to provide a method of locking the rotation of the pile, which can perform the rotation operation quickly. The object of the invention of claim 13 is that of claim 8
In addition to the objects of the present invention, the operation of supplying the power for operation to be supplied to the brake means is easy to handle, and the rotation of the pile is locked without risk of damage due to poor handling. Is to provide a way to An object of the invention according to claim 14 is to provide a method for locking the rotation of a pile, in which the actuation power supply means is not likely to be damaged by resonance, in addition to the object of claim 13. It is.

[0013]

The basic principle of the present invention created to achieve the above object will be outlined as follows with reference to FIG. 1 corresponding to an example of the embodiment. is there. That is, a vertical shaft 22a is fixed to one of the exciter 1 and the chuck 2 (the chuck 2 in this example), and the shaft is connected to the other of the exciter 1 and the chuck 2 (in this example). Is provided rotatably with respect to the exciter 1), and means (a brake sleeve 22b in this example) for braking the above-mentioned rotation by frictional force is provided. For example, if the rotation is to be locked by a pin, a clearance must be provided to insert and remove the pin from the pin hole, and if the clearance is provided, the vibration will rattle, thereby shortening the service life. In addition, the pin having a structure for locking the rotation about the vertical axis has no contribution to the function of transmitting the vibration in the vertical direction. On the other hand, when the rotation is braked by friction, it can be braked without backlash, and at the same time it can also brake the relative displacement in the up and down direction at the same time as the rotation, and also exhibits the function of transmitting the vibration in the up and down direction Is done. Based on the principle described above, the configuration of the invention of claim 1 is a device for locking the rotation of a pile gripped by a chuck attached to a vibrator of a vibrating pile punching machine around a vertical axis. A vertical shaft fixed to one of the exciter and the chuck, and a vertical shaft fixed to one of the other of the exciter and the chuck, and performing relative rotation of the shaft by frictional force. And braking means for braking. According to the invention of claim 1 described above, when the vertical shaft fixed to one of the exciter and the chuck is braked by the brake means installed on the other of the exciter and the chuck, The vibrator and the chuck cannot relatively rotate around the vertical axis, and cannot be relatively displaced in the vertical direction. For this reason, the vertical vibration generated by the vibration exciter is transmitted to the chuck through the brake means and the vertical shaft with almost no attenuation. Moreover, when braking by frictional force as described above,
For example, since there is no backlash as in the case of rotation stop by a pin, a reliable locking function is achieved. Further, when the brake means is remotely operated, the locking device according to the present invention is operated, and there is no need for an operator to directly touch the hand, thereby significantly reducing the risk of injury.

According to a second aspect of the present invention, in addition to the first aspect of the present invention, the brake means has a straight cylindrical shaft, a sleeve closely fitted to the shaft, Means for injecting a pressurized fluid between the shaft and the sleeve, wherein when a fluid pressure is applied between the shaft and the sleeve, the sleeve expands in a direction to increase in diameter, and Relative rotation with the sleeve becomes free, and when the fluid pressure is released, the sleeve has a structure in which the shaft is tightened by an elastic restoring force to prevent relative rotation. However,
The straight cylindrical shaft is sufficient if it has a straight cylindrical surface, for example, a shaft having a center hole and not a “column”, but may be a shaft that can be recognized as a “tube”, A shaft having a stepped shape may be used, and even if a concave portion such as an oil groove or an oil reservoir is provided on the right cylindrical surface, the shaft is included in the right cylindrical shaft. According to the second aspect of the present invention described above, the brake is released when fluid pressure is supplied between the shaft and the sleeve, and the brake operates permanently when fluid pressure is not supplied. Therefore, the hydraulic pressure is supplied at the beginning of the operation of setting the pile to release the brake, and in this state, the pile held by the chuck is turned to set a desired angular position, and then the hydraulic pressure is supplied. When the feeding is stopped, the brake enters the braking state, and the rotation angle position of the pile is maintained as it is. Therefore, the period during which the fluid pressure must be supplied is short, and power is not consumed to maintain the rotation angle position of the pile, which is advantageous in energy economy. Furthermore, it is possible to easily use hydraulic pressure as the fluid pressure, and to use a hydraulic source provided as an accessory of the vibrating pile punching device. Costs can also be reduced.

According to a third aspect of the present invention, in addition to the first aspect of the present invention, the shaft has a small diameter portion, a large diameter portion concentric with the small diameter portion, and a small diameter portion and a large diameter portion. And a tapered portion connecting the tapered portion to the portion. The brake means has a concave surface corresponding to the small diameter portion, the large diameter portion, and the tapered portion. However, the concave surface corresponding to the small-diameter portion, the large-diameter portion, and the tapered portion is a concave surface in which the small-diameter portion, the large-diameter portion, and the tapered portion are negative, or a surface similar to the concave surface. It means. According to the third aspect of the present invention described above, a boosting action by the wedge effect of the tapered surface acts between the tapered surface of the shaft and the negative tapered surface of the brake means, thereby causing the relative movement between the exciter and the chuck. And the vertical vibration generated by the vibrator is reliably transmitted to the chuck. In addition, since the tapered surfaces can be pressed against each other without any play by the wedge action, the durability is large.

The structure of the invention according to claim 4 is the same as that of claims 1 and 2.
In addition to the above configuration, the vibrator has a structure for rotating an eccentric weight attached to a rotating shaft, and a hydraulic cylinder device concentric with the vertical shaft is provided. , In a state where the operation of the brake means is released,
The pile can be lifted by hydraulic pressure via the chuck, and when the exciter is operating, vertical vibrations generated in the cylinder are chucked via the hydraulic cylinder device. And being transmitted to a pile. According to the fourth aspect of the present invention described above, when the chuck and the pile are lifted by the hydraulic cylinder and the gravitational load is supported by the hydraulic pressure, the rotation of the pile and the chuck about the vertical axis causes the frictional force due to the gravitational load. Does not occur, and can be rotated with a relatively small force. Considering only the support of the gravitational load of the chuck and the stake to assist the pivoting operation thereof as described above, the cylinder may be a hydraulic cylinder or a pneumatic cylinder. Since it is a pressure cylinder, when the outflow and inflow of liquid is closed to form a so-called hydraulic lock state, the cushioning effect like a pneumatic cylinder does not occur, and the vertical vibration generated by the vibrator is securely applied to the chuck and pile. Can tell.

According to a fifth aspect of the present invention, in addition to the first to fourth aspects, a driven gear is mounted on one of the vibrator and the chuck concentrically with the shaft. A drive motor provided with a drive gear meshing with the driven gear is installed on one of the exciter and the chuck. According to the fifth aspect of the present invention described above, the braking force of the brake means is released, and the drive motor is operated in a state where the rotation of the chuck with respect to the vibrator is free, and the drive gear is driven through the drive gear. By rotating the driven gear, the chuck can be rotated. It is not impossible to use a hydraulic motor or an electric motor as the driving motor, and to use a pneumatic motor. Regardless of which type of motor is used, its rotation / stop can be remotely controlled. Thereby, not only the labor of the worker is reduced and the working conditions are eased, but also there is no possibility of injury due to the mechanical device, which is effective in improving work safety and efficiency.

The structure of the invention according to claim 6 is the same as that of claims 1 to 5 above.
In addition to the configuration of the invention, the brake means is structured to be driven by hydraulic pressure, pneumatic pressure, or electricity, and a hydraulic or pneumatic hose is divided near the brake means to form a hydraulic coupler or a pneumatic coupler. Or a cabtire cable for electricity is divided near the brake means and detachably connected by an electric connector. According to the sixth aspect of the present invention described above, the hose or cabtire cable, which is a long member (generally several tens of meters) and is heavy, can be connected and disconnected near the brake means. During transportation, the hose or cabtire cable can be detached from the brake means (installed on the vibration exciter and not easily removed) and transported individually. For this reason,
Not only is the transfer operation easy, but there is no risk of damaging the hose or cabtire cable due to poor handling. That is, when the vibrating pile punching machine is mounted on the bed of a truck, there is no fear of giving an unreasonable external force such as bending a hose or a cabtire cable under the vibrating pile punching machine body. In general, a vibrating pile punching machine is a device that frequently moves in a work site, and therefore, the ease of transportation is of great practical significance.

According to a seventh aspect of the present invention, in addition to the configuration of the sixth aspect, the vibrator is mounted on a hanger via a shock absorbing mechanism, and the vicinity of a hydraulic coupler of the hose is provided. Alternatively, the vicinity of the electric connector of the cabtire cable is attached directly to the hanger or to the hanger via an elastic member. According to the seventh aspect of the present invention described above, the vicinity of the brake means of the hose or cabtire cable is attached to the hanger, so that the vibration transmitted to the hose or cabtire cable even when the brake means vibrates violently. Is significantly attenuated. The above hose or cabtire cable is
From the braking means of the vibratory pile punching machine located at the top of the pile,
Since it is suspended in the air until the power unit is installed on the ground, when vibration is applied, a resonance phenomenon similar to the vibration of a string occurs, and the antinode of the vibration is damaged. Application prevents damage due to resonance.

According to an eighth aspect of the present invention, a vibrating pile punching machine is provided by installing a chuck below the exciter, and the pile gripped by the chuck is set in a vertical position and suspended while the pile is suspended. In the case of rotating about a vertical axis, in the method of locking the rotation so as to be able to be braked and released, a vertical shaft is attached to one of the exciter and the chuck, and the exciter and the chuck are Brake means is installed on one of the other, and the exciter is operated in a state where the vertical shaft is tightened by the brake means, and the vibration generated by the exciter is transmitted to the brake means and the chuck. Punching / pulling-out work is performed while transmitting to the pile via the pile, and in a state where the force for tightening the shaft is released by the brake means, the chuck holding the pile is Characterized in that which can be rotated around the axis of the vertical shaft. According to the eighth aspect of the present invention, the vertical shaft is attached to one of the exciter and the chuck, and the brake means is attached to the other one. The machine and the chuck can fix the relative displacement both around the vertical axis and in the vertical direction, and in this state, the vibration generated by the exciter is transmitted to the pile via the chuck with almost no attenuation Can be driven into piles
Pulling can be performed properly. When the operation of the brake means is released, the chuck can rotate around the vertical axis with respect to the exciter, so that the rotation angle position of the pile gripped by the chuck is adjusted as desired. Therefore, construction according to the construction design document is possible. As can be easily understood from the above-described operation, “attaching a vertical shaft to one of the exciter and the chuck” is a necessary condition to achieve the purpose. Attach a vertical shaft to both.

According to a ninth aspect of the present invention, in addition to the configuration of the eighth aspect, the sleeve is closely fitted to the vertical shaft, and the shaft and the sleeve are fixed to each other by a frictional force. In this state, the exciter is actuated to drive and pull out the pile, pressurized fluid is injected between the shaft and the sleeve to expand the sleeve in the radial direction, and the space between the shaft and the sleeve is removed. The chuck is rotated with respect to the vibrator in a state in which a gap filled with a fluid is generated. According to the ninth aspect described above, when the supply of the fluid pressure is stopped, the braking is automatically performed by the elastic restoring force of the sleeve.
Therefore, there is no need to supply fluid pressure to the brake means during the period when the pile driving machine is operated by operating the brake means. Therefore, even if the supply of the fluid pressure of the brake means is interrupted during the pile driving / pulling-out work, the pile driving / pulling-out work is not affected. In addition, the period during which fluid pressure must be delivered to rotate the stake is relatively short, and the period during which fluid pressure delivery is not required is relatively long, so that the amount of energy consumed in terms of power for operating the brake means is increased. Less is.

According to a tenth aspect of the present invention, in addition to the configuration of the eighth aspect, a flange-shaped large-diameter portion is provided at a tip of the vertical shaft, and a tapered portion is provided at a root side of the large-diameter portion. It is characterized in that the pile is driven and pulled out in a state where the taper surface of the vertical shaft is tightened by a brake shoe having a concave surface corresponding to the large diameter portion and the tapered portion and a frictional force is applied. And According to the tenth aspect of the present invention, the pressure boosted by the wedge action of the tapered surface is applied between the brake shoe and the tapered surface even with a relatively small tightening force. The relative positional relationship with the chuck is securely fixed both in the vertical vibration direction and in the angular position around the vertical axis. For this reason, the vibration generated by the exciter is transmitted to the pile via the chuck with little attenuation, and the vibration punching operation is performed efficiently.

The structure of the eleventh invention is the same as that of the eighth invention.
In addition to the configuration of the ninth aspect of the invention, a rotary vibrator for rotating an eccentric weight is used as the vibrator, and the pile is gripped by a hydraulic cylinder having a piston rod concentric with the vertical shaft. Lifting the chuck, rotating the chuck and the pile around a vertical axis while supporting the gravitational load of the pile and the chuck by hydraulic pressure, and inflow of hydraulic oil into the pressure chamber of the hydraulic cylinder. By operating the rotary vibrator with the outflow closed, the vibration generated by the vibrator is transmitted to the pile via the hydraulic cylinder and the chuck, and the pile is driven and pulled out. . According to the eleventh aspect of the present invention described above, when rotating the chuck holding the pile, the gravity load of the pile and the chuck is supported by the hydraulic pressure, so that the friction that gives resistance to the rotation due to the gravity load is almost eliminated. It can be easily and smoothly rotated with a relatively small force.

According to a twelfth aspect of the present invention, there is provided the configuration of the eighth to eighth aspects.
In addition to the configuration of the eleventh aspect of the present invention, a drive motor is installed on one of the vibrator and the chuck, and a drive gear is attached to the drive motor, and on one of the other of the vibrator and the chuck, The driven gear is mounted concentrically with the shaft, the driven gear is mounted, and the operation of the brake means is released to allow the shaft to rotate freely. , The pivot angle of the pile held by the chuck around the vertical axis is adjusted to a desired angular position, the drive motor is stopped, and the brake means is operated. And generating a frictional force to fix the rotation angle position of the chuck with respect to the exciter. According to the twelfth aspect described above, the operator can remotely operate the drive motor to rotate the pile around the vertical axis without touching the chuck or the pile. This not only eliminates the need for labor for manually turning the pile, but also prevents the occurrence of personal injury.

According to a thirteenth aspect of the present invention, there is provided the above-described eighth to eighth aspects.
In addition to the configuration of the twelfth aspect, a hose for supplying a pressure fluid for driving the brake means is divided near the brake means and connected by a hydraulic coupler, or A cabtire cable for supplying electric power for driving the vehicle is divided near the brake means and connected by an electric connector, and at the time of disassembling and transporting, the fluid pressure coupler or the electric connector is detached so that a hose or a cabtire is disconnected. The cable is separated from the exciter or the chuck, and the vibrating pile punching machine is transported. At the time of assembling and installing, the hydraulic coupler or the electrical connector is connected. According to the invention of the thirteenth aspect described above, the hose or the cabtire cable is separated from the main body of the vibrating pile punching machine and transported when the vibrating pile punching machine is transported. It is easy, and in particular, there is no danger that these hoses or cabtire cables may be damaged under the vibrating pile punching machine body.

According to a fourteenth aspect of the present invention,
In addition to the configuration of the invention, the vibration generator is mounted on a hanger via a buffer mechanism, and the vicinity of the fluid pressure coupler of the hose for the pressure fluid or the vicinity of the electrical connector of the cabtire cable is connected to the hanger. Directly against
Alternatively, it is characterized by being attached via an elastic member. According to the above-described invention, the portion where the hose or the cabtire cable is connected to the brake means is subject to severe vibration from the exciter, but the hanger is buffered with respect to the exciter. The vibration applied to the part attached to the vehicle is moderate. For this reason, there is no possibility that the hose or the cabtire cable will resonate and be damaged.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a locking method according to the present invention using an apparatus for locking the rotation of a pile according to the present invention will be described with reference to FIGS. . FIG. 1 shows a device for locking the rotation of a pile according to the present invention.
It is the front view which cut and drawn a part of vibrating pile punching machine provided with an embodiment. Reference numeral 1 denotes an exciter comprising a rotary vibrator having a structure in which an eccentric weight 1b is attached to a rotating shaft 1a, and is driven to rotate by a motor 1c. As the motor 1c, a hydraulic motor or an electric motor can be used. A bearing bracket 21 is fixed to the exciter 1, and a suspension shaft 20 projecting downward from the hanger 4 is inserted into a bearing hole of the bearing bracket 21, and a lower end of the suspension shaft 20. The spring seat 22 described later
Is fixed. The upper spring 23 is compression fitted between the hanger 4 and the bearing bracket 21, and the lower spring 24 is compression fitted between the bearing bracket 21 and the seat 22. Thus, the vibration exciter 1 is mounted on the hanger 4 via the buffer mechanism.

A lifting cylinder 1 is provided below the vibrator 1.
4 is mounted below, a bare lock (trade name) 22 which is a hydraulically actuated brake means is mounted, and the chuck 2 is mounted below. The above-mentioned bare lock 22 will be described later in detail with reference to FIG. 2. In this embodiment, a shaft 22a of the bare lock 22 is integrally connected to a piston rod of the lifting cylinder 14, and a lower end of the shaft 22a. Is fixed to the chuck 2. FIG. 2 is an explanatory view of the structure and function of the bear lock shown in FIG. 1 described above, wherein (A) shows a state in which the brake function is operating, and (B) shows a state in which the brake function is released. Each state is drawn. A brake sleeve 22b is closely fitted to a shaft 22a having a right cylindrical surface, and O-rings 22c are provided at both ends of the brake sleeve 22b, and a pressurized fluid is supplied to the fitting surface. Pressure supply port 22d is formed. When no other pressure is supplied to the pressure supply port 22d, as shown in FIG.
2b tightens the shaft 22a by the elastic restoring force, so that the shaft 22a is restrained in the rotational direction and the longitudinal direction by the frictional force. (B) As shown in the figure, when the fluid pressure P is supplied to the pressure supply port 22d, a pressure acts on the fitting surface between the shaft 22a and the brake sleeve 22b, and the diameter of the brake sleeve 22b expands. As a result, the shaft 22a is slidable in both the turning direction and the longitudinal direction. The fluid pressure P
Is released, the state returns to the state shown in FIG. The fluid pressure P is desirably an oil pressure, but may be a hydraulic pressure or an air pressure.

As shown in FIG. 1A, the lifting cylinder 14 is provided with a hydraulic cylinder 14b fixed to the vibrator 1.
And a hydraulic piston 14a housed therein, and a common piston rod with the shaft 22a of the bear lock 22. The hydraulic cylinder and the hydraulic piston in the present embodiment may be replaced with, for example, a hydraulic cylinder and a hydraulic piston, although they are not necessarily hydraulic. However, since the pneumatic type has a cushioning effect, it must be a hydraulic type. Bear lock 22
A hydraulic hose 23 is connected to (see FIG. 1). The hydraulic hose 23 is a long member connected to a power unit (not shown) placed on the ground, has a large weight, and is difficult to handle during transportation. For this reason, the hydraulic hose 23 is divided at a location not far from the connection portion to the bare lock 22, and is detachably connected by a hydraulic coupler 24. When moving to the next work site after stakeout and pile removal work at a certain construction site, handling is easy if the hydraulic coupler 24 is detached and most of the hydraulic hose 23 is separated from the exciter. In addition, the hose can be prevented from being damaged due to poor handling. Although the brake means in the embodiment shown in FIG. 1 is a hydraulic bear lock 22, power for braking is supplied by the hydraulic hose 23, but a brake means which is electrically operated as described later may be used. In such a case, the hydraulic hose 23 is replaced by a cabtire cable (not shown) and the hydraulic coupler 24 is replaced by an electric connector (not shown). Further, since the hydraulic hose 23 is suspended in the air, it is likely that the hydraulic hose 23 is resonated and damaged when the vibration from the vibration exciter 1 is transmitted. Therefore, if a portion that is not far from the hydraulic coupler 24 provided on the hydraulic hose 23 is engaged with the hanger 4 or a member integrated with the hanger 4, it is effective to prevent the breakage due to the resonance described above. It is. Even when a cabtire cable is used instead of a hydraulic hose, resonance damage can be prevented by attaching the vicinity of an electrical connector (not shown) to a hanger.

FIG. 3 shows a vibration isolating structure of a hydraulic hose in an embodiment different from the embodiment shown in FIG. 1 described above, and is a schematic drawing cut by a horizontal plane passing through a receiving seat. FIG. A pair of holding members 3 are interposed between a pair of receiving seats 22 via a rubber-like elastic vibration isolating member 33.
4 are elastically supported. The pair of holding members 34
Are sandwiched and supported by a relatively thick hydraulic hose 35. This thick hydraulic hose 34 supplies a power source to a hydraulic motor that rotates the above-described exciter. Three hydraulic sockets 36 are provided on the holding member 34, and two of the three hydraulic sockets appear in the drawing. 2 above
A hydraulic hose short 37 and a hydraulic hose long 38 are connected to each of the hydraulic sockets, and these long and short hoses communicate with each other via a hydraulic socket 36. The two hydraulic hoses / long 38 are connected to a hydraulic source (both not shown) via an operating valve, and one of the two hydraulic hoses / short 37 is raised to the bare lock 22 and the other is lifted. Each is connected to a cylinder 14. In the present embodiment, the hydraulic socket 36 and the fittings of the long and short hydraulic hoses 38 and 37 screwed thereto function as a hydraulic coupler. According to the present embodiment (FIG. 3), after the hydraulic hose / length 38 is detached from the hydraulic socket 36, the terminal processing of the hydraulic hose / short 37 does not require much trouble, which is convenient.

In order to use the apparatus of the embodiment shown in FIG. 1, the hydraulic coupler 24 is connected, the hydraulic hose 23 is connected, pressure oil is supplied to release the brake function of the bear lock 22, and the shaft 22a And the hydraulic piston 14a of the lifting cylinder 14 is raised via the hydraulic hose 23 'to the state shown in the figure. Thereby, the gravitational load of the chuck 2 and the pile 3 is supported by the hydraulic pressure, and the frictional force does not act on the rotation. In this state, after the pile 3 is turned to a desired rotation angle position, the supply of the pressure oil to the hydraulic hose 23 is stopped, and the bare lock 22 is brought into a brake state, and the exciter 1 is operated in this state. Vertical vibrations generated by the vibration exciter 1 are transmitted to the chuck 2 via a bare-lock brake sleeve 22b and a shaft 22a. At this time, if the inflow and outflow of oil into and out of the cylinder head chamber and the cylinder bottom chamber of the lifting cylinder 14 are closed, so-called hydraulic locking is performed,
Since the transmission of the vertical vibration is shared by the lifting cylinder 14 and the load on the bear lock 22 is reduced, it is effective for improving the durability of the bear lock 22.

FIG. 4 is a vertical sectional view of the brake means in an embodiment different from the embodiment shown in FIG. This brake means is a component that can be used in place of the bare lock used as the brake means in the embodiment of FIG. FIG. 5 is a plan view schematically illustrating the brake means of the embodiment shown in FIG. 4 described above. An upper vertical shaft 25 is provided at the bottom of the shaker 1.
a, a lower vertical shaft 26a at the top of the chuck 2,
Each is fixed. The upper vertical shaft 25
The upper end of a is a flange-shaped upper brake drum 25b
However, a flange-shaped lower brake drum 26b is formed at the tip of the lower vertical shaft 26a, and tapered portions 25c, 26c are formed at the root side of each brake drum. And on the above,
Lower vertical shafts 25a, 26a, upper and lower brake drums 25b, 26b, and tapered portions 25c, 26c
The brake shoe having a concave portion corresponding to the above is disposed so as to be fitted to the outside. The brake shoe is divided into two parts along a vertical plane to form a fixed brake shoe 27 and a movable brake shoe 28. The brake shoes are attracted to each other by a brake cylinder 29 composed of a hydraulic cylinder, and the brake drum and the tapered portion are formed. Is to be tightened.

In this embodiment (FIG. 4), both the friction of the upper and lower brake drums 25b and 26b and the friction of the upper and lower tapered portions 25c and 26c can be used, and only one of them can be used. You can also. The frictional force at the brake drum has an advantage that the radius from the center axis Z is large, but the frictional force at the tapered portion has the advantage that a large pressing force (accordingly, a large frictional force) is obtained by the action of the wedge. Further, as can be easily understood from FIG. 4, when the upper and lower tapered portions are sandwiched by the brake shoes, the chuck 2 causes the chuck 2 to move due to the action of the wedge.
And is securely fixed.

The power for sandwiching the vertical shaft between the fixed brake shoe 27 and the movable brake shoe is not necessarily limited to the brake cylinder 29 composed of a hydraulic cylinder as in the above-described embodiment, but may be a hydraulic cylinder or a pneumatic cylinder. It may be. Further, although not shown, it is also possible to easily drive the brake shoe by an electric motor via a gear mechanism or a link mechanism. A drive motor 31 is installed on one of the exciter 1 and the chuck 2 and a drive gear 3 attached to the drive motor 31
By rotating the chuck 2, the ring gear 30 attached to the brake means is rotationally driven to rotate the chuck 2. As a result, the chuck can be rotated by remote control without requiring any human labor, so that the labor can be saved and the risk of a personal injury can be significantly reduced. 4 is a washer-shaped (annular) thrust metal, and 41 is a half washer-shaped thrust metal. When the brake shoe is loosened and the chuck 2 is turned, the thrust metal is supported and the rotation is supported. Smoothen it.

FIG. 6 shows an embodiment in which a device for locking the rotation of a pile according to the present invention is applied to a vibrating pile punching device provided with a hydraulic piston type vibrator, and is partially improved. FIG. 13 is a vertical sectional view schematically cut away and corresponding to FIG. 12 showing a vertical section of a conventional example. FIG.
The components denoted by the same reference numerals as in the above are the same or similar components as in the above-mentioned conventional example. Next, FIG. 6 will be described with respect to matters different from FIG. The bear lock 22 is the same brake means as described with reference to FIG. The shaft of the bear lock 22 of the present embodiment is integrally connected to the piston rod of the hydraulic piston type vibrator 14. Since the hydraulic piston type exciter has a function of lifting the piston by hydraulic pressure and supporting it rotatably around the axis, there is no need to provide the lifting cylinder 14 as in the embodiment of FIG. .

FIG. 7 is a schematic vertical sectional view showing a main part of a lock device according to an embodiment different from the above embodiments. The vibration exciter 1 in the present embodiment (FIG. 7)
It comprises the same rotary vibrator as in the embodiment of FIG. The lifting cylinder 14 in this embodiment comprises the same hydraulic cylinder means as in the embodiment of FIG. The bear lock 22 in the present embodiment is the same component as that in the embodiment of FIG. In this embodiment, the ring gear 30 is fixed around the top of the chuck 2. Drive motor 3
Reference numeral 1 denotes an electric motor, which is installed on the bear lock 22 (specifically, on the outer periphery of the lower end of the brake sleeve of the bear lock), and a drive gear 32 fixed to a rotation shaft of the drive motor 31 is attached to the ring gear 32. Has been engaged. Even with the structure shown in FIG. 7, when the brake operation of the bear lock 22 is released and the gravitational load of the chuck 2 and the pile 3 is supported by the lifting cylinder 14, the pile 3 can be rotated around the vertical axis. In other words, if the remote operation is performed by the drive motor 31, the rotation angle position of the pile around the vertical axis can be adjusted as desired without any need for labor and without the risk of causing a personal injury.
The rotation of the pile 3 can be locked by causing the bear lock 22 to perform a brake operation.

[0037]

According to the first aspect of the present invention, the vertical shaft fixed to one of the exciter and the chuck is
When braking by the brake means installed on one of the exciter and the chuck, the exciter and the chuck cannot relatively rotate around the vertical axis, and
It cannot be displaced relatively up and down. For this reason, the vertical vibration generated by the vibration exciter is transmitted to the chuck through the brake means and the vertical shaft with almost no attenuation. In addition, when the braking is performed by the frictional force as described above, the backlash does not occur, for example, in the case where the pin is prevented from rotating, so that the locking function is reliably performed. Further, when the brake means is remotely operated, the locking device according to the present invention is operated, and there is no need for an operator to directly touch the hand, thereby significantly reducing the risk of injury.

According to the second aspect of the present invention, the brake is released when fluid pressure is supplied between the shaft and the sleeve, and the brake operates permanently when fluid pressure is not supplied. Therefore, the hydraulic pressure is supplied at the beginning of the operation of setting the pile to release the brake, and in this state, the pile held by the chuck is turned to set a desired angular position, and then the hydraulic pressure is supplied. When the feeding is stopped, the brake enters the braking state, and the rotation angle position of the pile is maintained as it is. Because of this, the period during which fluid pressure must be delivered is short,
Since no power is consumed to maintain the pivot angle position of the pile, it is advantageous in terms of energy economy. Furthermore, it is possible to easily use hydraulic pressure as the fluid pressure, and to use a hydraulic source provided as an accessory of the vibrating pile punching device. Costs can also be reduced.

According to the third aspect of the present invention, a boosting action by the wedge effect of the tapered surface acts between the tapered surface of the shaft and the negative tapered surface of the brake means, so that the relative position between the exciter and the chuck is increased. The vertical rotation generated by the vibration exciter is reliably transmitted to the chuck while the rotation is reliably locked. In addition, since the tapered surfaces can be pressed against each other without any play by the wedge action, the durability is large.

According to the fourth aspect of the present invention, when the chuck and the pile are lifted by the hydraulic cylinder and the gravitational load is supported by the hydraulic pressure, the frictional force due to the gravitational load is caused by the rotation of the pile and the chuck around the vertical axis. It does not occur and can be rotated with a relatively small force. Considering only the support of the gravitational load of the chuck and the stake to assist the pivoting operation thereof as described above, the cylinder may be a hydraulic cylinder or a pneumatic cylinder. Since it is a pressure cylinder, when the outflow and inflow of liquid is closed to form a so-called hydraulic lock state, the cushioning effect like a pneumatic cylinder does not occur, and the vertical vibration generated by the vibrator is securely applied to the chuck and pile. Can tell.

According to the fifth aspect of the present invention, the drive motor is operated in a state where the braking force of the brake means is released and the rotation of the chuck with respect to the exciter is free.
By rotating the driven gear via the driving gear, the chuck can be rotated. It is not impossible to use a hydraulic motor or an electric motor as the driving motor, and to use a pneumatic motor. Regardless of which type of motor is used, its rotation / stop can be remotely controlled. Thereby, not only the labor of the worker is reduced and the working conditions are eased, but also there is no possibility of injury due to the mechanical device, which is effective in improving work safety and efficiency.

According to the invention of claim 6, a long hose (generally several tens of meters) and a heavy hose or cabtire cable are connected and connected near the brake means.
Since the disconnection operation is freely performed, the hose or the cabtire cable can be detached from the brake means (installed on the vibration exciter and is not easily detached) at the time of transportation, and can be individually transported. For this reason, not only is the transport operation easy, but there is no risk of damaging the hose or cabtire cable due to poor handling. That is, when the vibrating pile punching machine is mounted on the bed of a truck, there is no fear of giving an unreasonable external force such as bending a hose or a cabtire cable under the vibrating pile punching machine body. In general, a vibrating pile punching machine is a device that frequently moves in a work site, and therefore, the ease of transportation is of great practical significance.

According to the invention of claim 7, since the hose or the cabtire cable is attached to the hanger near the brake means, even if the brake means vibrates violently, the vibration transmitted to the hose or the cabtire cable is reduced. Significantly attenuated. The above-mentioned hose or cabtire cable is suspended in the air from the brake means of the vibratory pile punching machine located at the top of the pile to the power unit installed on the ground, so if it is given vibration, it will be affected by the vibration of the string Although a similar resonance phenomenon occurs to damage the antinode part of the vibration, application of the configuration of claim 7 prevents the damage due to resonance.

According to the eighth aspect of the present invention, a vertical shaft is attached to one of the exciter and the chuck, and a brake means is attached to the other of the exciter and the chuck. With the chuck, the relative displacement can be fixed both vertically and vertically, and in this state the vibration generated by the exciter can be transmitted to the pile via the chuck with almost no attenuation. The pile can be driven and pulled out properly. When the operation of the brake means is released, the chuck can rotate around the vertical axis with respect to the exciter, so that the rotation angle position of the pile gripped by the chuck is adjusted as desired. Therefore, construction according to the construction design document is possible.

According to the ninth aspect, when the supply of the fluid pressure is stopped, the braking is automatically performed by the elastic restoring force of the sleeve. Therefore, there is no need to supply fluid pressure to the brake means during the period when the pile driving machine is operated by operating the brake means. Therefore, even if the supply of the fluid pressure of the brake means is interrupted during the pile driving / pulling-out work, the pile driving / pulling-out work is not affected. In addition, the period during which fluid pressure must be delivered to rotate the stake is relatively short, and the period during which fluid pressure delivery is not required is relatively long, so that the amount of energy consumed in terms of power for operating the brake means is increased. Less is.

According to the tenth aspect, the pressure boosted by the wedge action of the tapered surface is applied between the brake shoe and the tapered surface even with a relatively small tightening force, so that the exciter and the chuck are Is reliably fixed both in the vertical vibration direction and in the angular position about the vertical axis. For this reason, the vibration generated by the exciter is transmitted to the pile via the chuck with little attenuation, and the vibration punching operation is performed efficiently.

According to the eleventh aspect of the present invention, when rotating the chuck holding the pile, the gravitational load of the pile and the chuck is supported by the hydraulic pressure. It can be easily and smoothly rotated with a relatively small force.

According to the twelfth aspect, the operator can remotely operate the drive motor to rotate the pile around the vertical axis without touching the chuck or the pile. This not only eliminates the need for labor for manually turning the pile, but also prevents the occurrence of personal injury.

According to the thirteenth aspect of the present invention, the hose or the cabtire cable is separated from the main body of the vibrating pile punching machine and transported when the vibrating pile punching machine is transported.
The handling operation of these hoses or cabtire cables is easy, and in particular, there is no danger that these hoses or cabtire cables will be damaged beneath the vibrating pile punching machine body.

According to the fourteenth aspect of the present invention, the portion where the hose or the cabtire cable is connected to the brake means is subject to severe vibration from the vibration exciter, but is connected to the hanger which is buffered with respect to the vibration exciter. Vibration received by the attached part is moderate. For this reason, there is no possibility that the hose or the cabtire cable will resonate and be damaged.

[Brief description of the drawings]

FIG. 1 is a front view of a vibrating pile punching machine provided with an embodiment of a device for locking rotation of a pile according to the present invention, which is partially cut and drawn.

FIG. 2 shows the structure of the bear lock shown in FIG.
It is an explanatory view of a function, (A) depicts a state in which the brake function is operating, and (B) depicts a state in which the brake function is released.

FIG. 3 is a schematic view cut out and drawn by a horizontal plane passing through a receiving seat in order to show a vibration isolating structure of a hydraulic hose in an embodiment different from the embodiment shown in FIG. 1 described above. .

FIG. 4 is a vertical sectional view of a brake means in an embodiment different from the embodiment shown in FIG. 1 described above.

FIG. 5 is a schematic plan view schematically showing the brake means of the embodiment shown in FIG. 4 described above.

FIG. 6 shows an improved embodiment in which a device for locking the rotation of a pile according to the present invention is applied to a vibrating pile punching device having a hydraulic piston type exciter, and is partially cut away. FIG. 13 is a schematic vertical sectional view corresponding to FIG. 12 showing a vertical sectional view of a conventional example.

FIG. 7 is a schematic vertical sectional view showing a main part of a lock device according to an embodiment different from the above embodiments.

FIG. 8 is a schematic front view showing a state in which a pile is gripped by a vibrating pile punching machine, the pile is suspended by a crane, and the pile is driven into the ground while vibrating the pile. And
The schematic front view of a state where the pile is pulled out while applying vibration to the pile is almost the same as that in this drawing.

FIG. 9 is a view for explaining a method of arranging and driving sheet piles, which are a kind of pile, and (A) illustrates a state in which four of a large number of sheet piles are interconnected. (B) is a plan view depicting a planning line set around the construction area.

FIG. 10 is a cross-sectional view of a main part of a chuck rotation supporting device according to Japanese Utility Model Publication No. 46-29020, which is configured to make a chuck of a driving sheet pile rotatable and cut by a vertical plane. is there.

FIG. 11 is a side external view showing an example of a piston rotation preventing device according to Japanese Patent Publication No. Hei 4-10528 configured to prevent rotation of the chuck with respect to the exciter.

12 is a vertical sectional view of the hydraulic piston type exciter provided with the rotation preventing device shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Exciter, 1a ... Rotating shaft, 1b ... Eccentric weight, 1c ... Motor, 2 ... Chuck, 3 ... Pile, 4 ... Hanger, 4a ...
Hanging ring, 5 crane, 5a crane boom, 5b hook, 6 steel sheet pile, 6a, 6b joint, 7 pile driving design line, 8 shaft member, 8a male screw, 9 bearing bracket, 9a ... Bearing hole, 10: Lock nut, 11: Bearing, 12: Key plate, 13: Bolt, 14: Lifting cylinder, 14a: Hydraulic piston, 14b: Hydraulic cylinder, 15: Reaction weight, 16: Arm / upper, 1
7: Arm / But, 18: Elastic member, 19: Buffer rubber, 2
0: suspension shaft, 21: bearing bracket, 22: bare lock, 22a: shaft, 22b: brake sleeve, 2
2c: O-ring, 22d: Pressure supply port, 23, 23 '...
Hydraulic hose 24 Hydraulic connecter 25a Upper vertical shaft 25b Lower vertical shaft 25c Tapered portion 26a Upper brake drum 26b Lower brake drum 26c Tapered portion 27 Fixed brake shoe 28 Movable brake shoe, 29: brake cylinder, 30: ring gear, 31: drive motor, 3
2. Drive gear, 33: Anti-vibration member, 34: Holding member, 35
... Hydraulic hose, 36 ... Hydraulic socket, 37 ... Hydraulic hose, short, 38 ... Hydraulic hose, long, 40, 41 ... Thrust metal.

Claims (14)

(57) [Claims] 1. A device for locking rotation of a pile held by a chuck attached to a vibrator of a vibrating pile punching machine around a vertical axis, wherein one of said vibrator and said chuck is locked. A fixed vertical shaft, and brake means attached to one of the vibrator and the chuck to brake the relative rotation of the shaft by frictional force. Characteristic device that locks the rotation of the pile. 2. The brake means comprises a right cylindrical shaft, a sleeve closely fitting the shaft, and means for injecting a pressure fluid between the shaft and the sleeve. When a fluid pressure is applied between the shaft and the sleeve, the sleeve expands in a direction to increase the diameter, and the relative rotation between the shaft and the sleeve becomes free. 2. The device for locking rotation of a pile according to claim 1, wherein the sleeve has a structure in which relative rotation is prevented by tightening a shaft by elastic restoring force. 3. The brake means has a small-diameter portion, a large-diameter portion concentric with the small-diameter portion, and a taper portion connecting the small-diameter portion and the large-diameter portion. The device for locking rotation of a pile according to claim 1, wherein the device has concave surfaces corresponding to the small diameter portion, the large diameter portion, and the tapered portion. 4. The vibration exciter has a structure for rotating an eccentric weight attached to a rotating shaft, and is provided with a hydraulic cylinder device concentric with the vertical shaft, In a state in which the operation of the brake means is released, the pile can be lifted by the hydraulic pressure via the chuck, and when the exciter is operating, a vertical direction generated by the cylinder is generated. The device for locking rotation of a pile according to claim 1 or 2, wherein vibrations are transmitted to the chuck and the pile via the hydraulic cylinder device. 5. A driven gear is mounted on one of the exciter and the chuck concentrically with the shaft, and the driven gear is mounted on the other of the exciter and the chuck. The device for locking rotation of a pile according to any one of claims 1 to 4, further comprising a drive motor provided with a drive gear that meshes with the pile. 6. The brake means has a structure driven by hydraulic pressure, pneumatic pressure, or electricity, and a hydraulic or pneumatic hose is divided near the brake means and is detachable by a hydraulic coupler or a pneumatic coupler. The electric cabtire cable is divided in the vicinity of the brake means and is detachably connected by an electric connector. A device for locking the rotation of a stake described in crab. 7. The vibration exciter is mounted on a hanger via a buffer mechanism, and the vicinity of the hose coupler or the vicinity of the connector of the cabtire cable is directly connected to the hanger. The device for locking the rotation of a pile according to claim 6, wherein the device is attached to the hanger via an elastic member. 8. A vibrating pile punching device is provided by installing a chuck below the vibration exciter, and the pile gripped by the chuck is rotated in a vertical posture while being suspended in a vertical posture. In the method of locking, the rotation is braked and released so as to be freely locked. A vertical shaft is attached to one of the exciter and the chuck, and a brake is attached to one of the exciter and the chuck. Means are installed, and the exciter is operated in a state where the vertical shaft is tightened by the brake means, and the vibration generated by the exciter is transmitted to the pile via the brake means and the chuck. While the pile is being driven in and pulled out, and the force for tightening the shaft is released by the brake means, the chuck holding the pile is removed from the vertical shaft. Characterized in that which can be rotated around the heart,
How to lock the pile rotation. 9. A pile is driven into and out of the pile by operating the exciter in a state where the sleeve is closely fitted to the vertical shaft and the shaft and the sleeve are fixed to each other by frictional force. Performing a work, injecting a pressurized fluid between the shaft and the sleeve to expand the sleeve in the radial direction, and creating a fluid-filled gap between the shaft and the sleeve, The method according to claim 8, wherein the chuck is rotated with respect to the exciter. 10. A flange-shaped large-diameter portion is provided at a tip of the vertical shaft, and a tapered portion is formed at a root side of the large-diameter portion, and a concave surface corresponding to the large-diameter portion and the tapered portion is formed. 9. The pile driving and locking operation according to claim 8, wherein the pile is driven and pulled out while the frictional force is exerted by tightening the tapered surface of the vertical shaft by the formed brake shoe. Method. 11. A chuck which uses a rotary vibrator for rotating an eccentric weight as the vibrator, and which holds the pile by a hydraulic cylinder having a piston rod concentric with the vertical shaft. The chuck and the pile are rotated around a vertical axis while supporting the gravity load of the pile and the chuck by hydraulic pressure, and the inflow and outflow of hydraulic oil into and out of the pressure chamber of the hydraulic cylinder are closed. 9. The method according to claim 8, wherein the rotary vibrator is operated in a state, and the vibration generated by the vibrator is transmitted to the pile via the hydraulic cylinder and the chuck to perform the pile driving / pulling operation. Alternatively, the method of locking rotation of a pile according to claim 9. 12. A drive motor is installed on one of the vibrator and the chuck, and a drive gear is mounted on the drive motor. The shaft is attached to one of the other of the vibrator and the chuck. With the driven gear mounted concentrically and the brake means released to allow the shaft to rotate freely, the drive motor is activated to move the chuck relative to the vibrator. The pile is gripped by the chuck, the rotation angle of the pile about the vertical axis is adjusted to a desired angular position, the drive motor is stopped, and the brake means is operated to reduce the frictional force. Raise,
The method for locking the rotation of a pile according to any one of claims 8 to 11, wherein a rotation angle position of the chuck with respect to the exciter is fixed. 13. A hose for supplying a pressure fluid for driving the brake means is divided near the brake means and connected by a hydraulic coupler, or for driving the brake means. The cabtyre cable that supplies the electric power is divided in the vicinity of the brake means and connected by an electric connector. During disassembly and transportation, the fluid pressure coupler or the electric connector is detached to excite the hose or the cabtire cable. The vibratory pile punching machine is transported separately from the machine or the chuck, and the hydraulic coupler or the electrical connector is connected at the time of assembling / installing, according to any one of claims 8 to 12. How to lock the pile rotation. 14. The exciter is mounted on a hanger via a buffer mechanism, and the vicinity of a fluid pressure coupler of the hose for pressure fluid or the vicinity of an electric connector of the cabtire cable is connected to the hanger. The method according to claim 13, wherein the pile is attached directly or via an elastic member.