JP3400422B2 - Advanced equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tip device for propelling in the ground to construct a tunnel such as a horizontal hole or a vertical hole in the ground.

[0002]

2. Description of the Related Art As a construction method for burying a pipe in the ground, a static press-fitting construction method is used in which a tip device is simply pressed by an extruding device installed in a vertical shaft to press it into the ground without excavating earth and sand, An excavation method for excavating earth and sand with an excavator and propelling the excavator in the ground while discharging the excavated earth and sand, the construction method shown in JP-A-60-148997.
As shown in FIGS. 16 and 17 of the present application, the vibration exciter a is operated to vibrate the front portion c of the vibration generator b, and the soil d around the vibration generator b is vibrated to be fluidized, Shaft e
The earth and sand d
There is a dynamic press-fitting construction method in which the vibration generator b is press-fitted without excavating.

Further, in each of the above construction methods, when there is an obstacle such as a buried object in the ground, it is necessary to change the propulsion direction.
A device for correcting the propulsion direction is disclosed in Japanese Patent Laid-Open No. S58-222.
There is a device disclosed in Japanese Patent No. 291. This JP-A-58-22
As shown in FIG. 18 of the present application, the device disclosed in Japanese Patent No. 2291 pushes the wedge surface of the passive wedge member i through the driving wedge member h by a positioning jack g that extends in parallel with the propulsion direction of the device as a boosting mechanism. The piercing head j in front of the passive wedge member i and the propulsion jack k are tilted via a ball bearing m to change the propulsion direction of the device and avoid obstacles.

Since the apparatus as described above has a long overall length in the propulsion direction, when it is carried into the vertical shaft e which is the starting point, the entrance of the vertical shaft e is formed to be large or the entire apparatus is carried in. It is necessary to divide the total length in the propulsion direction into multiple parts, and when the total length in the propulsion direction of the device is to be divided and carried in due to restrictions such as the size of the vertical shaft e, the divided tip part should be placed in the ground beforehand. After assembling the device.

[0005]

However, since the propulsion function and the propulsion data detection function do not act on the divided tip portion that can be carried into the vertical shaft, the divided tip portion must be accurately propelled by pressing. There was a problem that I could not do it.

In view of the above situation, the present invention has an object to provide a tip device capable of dividing the entire length in the propulsion direction of the device while leaving the operation function.

[0007]

A tip device according to claim 1 of the present invention is a front device for propelling into the ground, and a front device which is detachably connected to the front device. And a rear device adapted to be propelled into the ground, and a detachable attachment adapted to be connectable when propelling the front device into the ground without connecting the rear device to the front device. The front device is a drive means for driving a predetermined means provided in the front device,
Control means or front-side nozzle hand for discharging at least Rutotomoni a drive unit, skids outside of the measuring means,
The rear device includes a step, and the rear device transmits and receives a signal to and from the drive device of the front device and a device for transmitting a driving force to the control device and the control device. Rutotomoni comprises means for transmitting a driving force to at least the drive means of the means for discharges into skids outside
Rear nozzle means and front nozzle means of the front device
A means for feeding a lubricant to the attachment , wherein the attachment is
When the attachment is connected to the front device,
At least the driving means among the means for transmitting a driving force to the driving means of the front device, the means for transmitting and receiving a signal to and from the control means, and the means for transmitting and receiving a signal to and from the measuring means. co When Ru comprises means for transmitting a driving force
To feed the lubricant to the front nozzle means of the front device.
It is equipped with means .

The tip device according to claim 2 of the present invention is a vibration generator for applying vibration to the ground, and is detachably connected to the vibration generator and the propulsion direction of the vibration generator. And a direction correction device adapted to correct
A detachable attachment adapted to be connected when propelling the vibration generating device into the ground without connecting the direction correcting device to the vibration generating device, the vibration generating device, The direction correcting device is provided with a vibration applying means for applying and at least a driving means for driving the vibration applying means, a control means, or a measuring means, and the direction correcting device is a propulsion device for changing a propulsion direction of the vibration generating device. A means for transmitting and receiving a signal between the direction correcting means, a means for transmitting a driving force to the drive means of the vibration generator and the control means, and a means for transmitting and receiving a signal between the measuring means. A means for transmitting a driving force to at least a driving means of the vibration generator is provided, and the attachment includes a means for transmitting the driving force, when the attachment is connected to the vibration generator. The driving force is transmitted to at least the driving means among the means for transmitting the driving force to the moving means, the means for exchanging a signal with the control means, and the means for exchanging a signal with the measuring means. It is equipped with means.

A tip device according to a third aspect of the present invention is a vibration generator for imparting vibration to the ground, and is detachably connected to the vibration generator and the propulsion direction of the vibration generator. And a direction correction device adapted to correct
And a detachable attachment adapted to be connected when propelling the vibration generating device into the ground in a state where the direction correcting device is not connected to the vibration generating device, wherein the vibration generating device is a tip outer cylinder. A piston that vibrates in the propelling direction is fitted in a space formed between the tip end inner cylinder and a driving means, a control means, or a measuring means for driving the piston inside the vibration generator main body. Of these, at least a driving means is provided, and the direction correcting device is installed in the first outer cylinder, and is installed in the second outer cylinder and can be externally fitted to the convex spherical seat. The concave spherical seat, the pressing drive means for changing the propelling direction of the vibration generator via the convex spherical seat, the means for transmitting the driving force to the drive means of the vibration generator, and the control means. Signal to and from Among the means for transmitting and receiving and the means for transmitting and receiving a signal to and from the measuring means, there is provided means for transmitting a driving force to at least a driving means, and the attachment is connected to the vibration generating device. In this case, at least the means for transmitting and receiving a signal to and from the means for transmitting a driving force to the drive means of the vibration generator and the control means, and the means for transmitting and receiving a signal to and from the measuring means. The driving means is provided with a means for transmitting a driving force.

According to a fourth aspect of the present invention, in order to detect the vibration state of the piston inside the vibration generator main body, a stroke detector for detecting the stroke of the piston, the tip head or the acceleration of the piston is detected. At least one of an acceleration detector, a pressure detector for detecting the fluid pressure for operating the piston forward in the propulsion direction, and an earth pressure detector for detecting the earth pressure acting on the tip of the piston. Means for detecting the tilting angle of the vibration generating device inside the direction correcting device main body.
Before detecting the displacement direction of the front stage cylindrical part of the direction correction device
A stroke detector that detects the tilting angle of the inner cylinder of the stepped cylindrical portion, a pressure detector that detects the hydraulic pressure of the pressing drive means to detect the moment generated by the tilting of the vibration generator, and an outer cylinder of the direction correcting device. At least any one of earth pressure detectors for detecting the earth pressure acting is provided.

A tip device according to claim 5 of the present invention is a front device.
And rear device or front device with attachment
Or means for supplying hydraulic, electric and lubricant when separating
Is integrally provided.

In the tip device according to claim 6 of the present invention, vibration is generated.
The device is equipped with a vibration-generating nozzle that discharges the lubricant to the outside.
Equipped with a direction correction device to correct the direction of discharging the lubricant to the outside.
Side nozzle means and a front vibration generating side nozzle of the vibration generating device.
Attached to the attachment means
And the attachment is connected to the vibration generator.
The vibration generating nozzle of the vibration generating device,
A means for feeding a material is provided, and the invention is claimed.
The tip device of 7 is a vibration generator and a direction correction device or
Connect or disconnect the vibration generator and attachment
A means to supply hydraulic pressure, electricity and lubricant at the time is integrally provided.
It is equipped with a connecting means.

Usually, when propelling the device into the ground, the front device and the rear device are connected and propelled, and the front device is driven by the driving means of the front device via the rear device. And the signals of the control means and the measuring means are transmitted and received. When the equipment is separated and carried into the shaft, the front equipment and the rear equipment are separated and the front equipment is carried into the shaft so that the functions of the driving means, control means and measuring means of the front equipment remain. Accordingly, an attachment is connected to the separated front device to transmit the driving force to the driving means of the front device and to send and receive signals of the control means and the measuring means.

As described above, according to the present invention, when the front device is separated and carried into the shaft, the drive means is driven through the attachment without connecting the front device to the rear device. Since the control means for controlling the drive means is operated and the measuring means for obtaining the measurement data of propulsion is operated, the front device can be reliably and stably propelled even in the case of only the separated front device. it can. Further, when propelling the separated front device from the vertical shaft, even if the soil around the vertical shaft is hard and cannot be propelled only by pressing, it drives the driving means and activates the control means and the measuring means. By doing so, the front device can be easily propelled. Furthermore, when the front device and the rear device are connected and propelled, the drive device, the control device, and the measuring device of the front device and the rear device are independent of each other, so that the function of the rear device is not necessary. Alternatively, the front device can be driven even if there is a failure. Furthermore, since the attachment can be connected to the front device to make it propulsive, use the same hose and cable as the rear device even if the interface of the front device is different from the interface of the rear device. As a result, only the front device can be driven easily. Also before
When connecting and propelling the front and rear devices,
Discharge the lubricant through the rear device and place only the front device
When propelling, eject the lubricant through the attachment.
Therefore, even if only the separated front device is used,
It is possible to promote the parts and devices more reliably and stably.
It

Here, when the front device is the vibration generating device and the rear device is the direction correcting device as shown in claim 2, claim 3, and claim 4 of the present invention, the vibration generating device is the tip. By vibrating the head in the propulsion direction and applying vibration to the sand and sand, the sand and sand are fluidized so as to reduce the necessary propulsion force and the propulsion of the device is facilitated.
By pressing the inner cylinder by the pressing drive means, the vibration generator is tilted via the convex spherical seat, and the propulsion direction of the vibration generator is corrected to a desired direction.

According to claim 5 of the present invention, the front device and the rear device
Connect the attachment to the front device or front device or
Supply hydraulic pressure, electricity, lubricant by connecting means when separating
Connecting or detaching means for attaching and detaching integrally
It is possible to shorten the work time required for.

According to claim 6 of the present invention, the vibration generator
Vibration is generated when the vehicle and the direction correction device are connected and propelled.
Lubricants are discharged to the device via a direction corrector to generate vibration.
When propelling only the device, through the attachment
In order to discharge the lubricant, only the separated vibration generator
Even if it is, promote the vibration generator more reliably and stably
Can be made. In the case of claim 7 of the present invention, vibration
Generator and direction corrector or vibration generator and attack
Oil when connecting or disconnecting
The means for supplying pressure, electricity and lubricant can be attached and detached integrally.
Reduce the work time required for connection or disconnection
You can

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 15 are examples of embodiments for carrying out the present invention.

A pipe embedding device to which the direction correcting device of the present invention is applied is shown in FIG. 1, in which 1 is a tip device.

In the tip device 1, the tip head 2 is moved in the driving direction D.
The vibration generator 4 of the front device located on the front side of the propulsion direction D1 and adapted to vibrate the earth and sand 3 by vibrating in the axial direction parallel to The direction correction device 6 of the rear device is provided which is connected to the rear of the propulsion direction D1 and includes the bent portion 5 for correcting the propulsion direction D1 during propulsion.

Reference numeral 7 denotes an insertion tube arranged behind the direction correcting device 6 in the propulsion direction D1 of the tip device 1, and 8 is arranged in a vertical shaft 9 so as to press the rear end of the insertion tube 7 via a pressing plate 10. It is an extruding device such as a jack.

In the pipe burying device, the tip 3 of the vibration generator 4 is vibrated in the direction parallel to the propulsion direction D1 to apply vibration to the sand 3 to fluidize the sand 3. And the original pushing device 8 is extended to push the pressing plate 10.
The insertion tube 7 is press-fitted into the ground via the, and the tip device 1 is pushed by the insertion tube 7 to propel the tip device 1. When the soil 3 is fluidized, the shearing force is reduced, and thus the propulsive resistance force applied to the front surface of the tip device 1 is reduced, so that the tip device 1 can be easily pressed into the ground.

Further, in the pipe burying device, the vibration generating device 4 is tilted by the bent portion 5 of the direction correcting device 6, and the original pushing device 8 is further added.
The tip end device 1 is pressed through the pressing plate 10 and the insertion tube 7 by extending the
I am trying to promote it while correcting.

Here, as shown in FIG. 2, the vibration generator 4 and the direction correcting device 6 of the tip device 1 are located at the tip of the direction correcting device 6 and the connecting portion 11 located on the rear end face of the vibration generator 4. The connecting portion 12 is configured to be connected or separated, and when the vibration generating device 4 and the direction correcting device 6 are connected, the connecting device 12 extends from the control device 14 to the connecting portion 13 at the rear end of the direction correcting device 6. Drive, control, and data detection lines 15 are connected to each other, and the vibration generator 4 and the direction corrector 6 are connected.
The attachment 1 for changing the shape of the rear end of the vibration generator 4 is attached to the connecting portion 11 of the vibration generator 4 when the vibration generator 4 is separated.
The interface is converted via 6 and lines 15 for driving, controlling and data detection are connected.

A drive, control, and data detection line 15 extending from the control device 14 supplies electricity to two hydraulic hoses 17 and 18 of a hydraulic supply line and a return line. A liquid used to connect the electric cable 19, the hose 20 for lubricant supplying the lubricant and the direction correcting device 6 to measure the water pressure and detect the depth of the direction correcting device 6 in the ground. It is composed of the pressure gauge hose 21 and
The connectors 2 having different shapes are provided at the tips of the hydraulic hoses 17 and 18.
2, 23, a connector 24 of another shape at the tip of the electric cable 19, a connector 25 of still another shape at the tip of the lubricant hose 20, and a tip of the hydraulic depth gauge hose 21. The connectors 26 having different shapes are provided respectively.

Further, as shown in FIGS. 3 and 4, the attachment 16 is provided with an outer cylinder 27 having substantially the same diameter as the outer shape of the vibration generator 4, and one end of the outer cylinder 27 has a bolt 28 interposed therebetween. Front wall 2 that can be connected to the connecting portion 11 of the vibration generator 4
9, a rear wall 30 is arranged at the other end of the outer cylinder 27, and hydraulic pressure, electricity, and lubricant are supplied to the front wall 29 by connecting to the connecting portion 11 of the vibration generator 4. As means, a coupler 31 on the hydraulic pressure supply conduit side, a coupler 32 on the hydraulic pressure return conduit side, a coupler 33 for electricity, and a coupler 34 for lubricant are provided, and the rear wall 30 includes a coupler on the hydraulic pressure supply conduit side. A coupler (not shown), a hydraulic return line side coupler (not shown), an electric coupler 35, and a lubricant coupler 36 are provided, and various couplers 31 of the front wall 29 are provided inside the outer cylinder 27. , 32, 33, 34 and the various couplers 35, 36 of the rear wall 30 correspond to the hose 37, respectively.
And the like. In addition, 38 is the rear wall 30.
It is a cylindrical adapter that can be attached to.

Furthermore, the line 15 is attached to the attachment 16.
When connecting the hydraulic hoses 17, 18 to the coupler (not shown) on the hydraulic supply line side and the coupler (not shown) on the hydraulic return line side in the rear wall 30, respectively.
Connectors 22, 23 of the hose 20 for the sliding material to the coupler 36 of the rear wall 30, and a connector 24 of the electric cable 19 to the coupler 35 of the rear wall 30.
They are connected to each other.

On the other hand, the vibration generator 4 constituting the tip device 1 is shown in FIGS. 5 to 9 and will be described in detail below.

In the figure, reference numeral 41 is a cylindrical outer cylinder of the tip portion.
In the tip end outer cylinder 41, a cylindrical tip end inner cylinder 4 is formed so that a space with a predetermined interval is formed between the tip end outer cylinder 41 and the inner circumference of the tip outer cylinder 41 in a portion other than the rearward direction D1.
2 are concentrically fitted, and the rear end of the tip inner cylinder 42 in the propulsion direction D1 is fitted and fixed in a mounting hole formed in the rear end of the front outer cylinder 41 in the propulsion direction D1. The length of the tip end inner cylinder 42 in the direction parallel to the propulsion direction D1 is shorter than that of the tip end outer cylinder 41, and the propulsion direction D1 tip end is located in the tip end outer cylinder 41.

In the space between the tip outer cylinder 41 and the tip inner cylinder 42, the outer circumference slides on the inner circumference of the tip outer cylinder 41, and the inner circumference slides on the outer circumference of the tip inner cylinder 42. The cylindrical piston 43 of the vibration imparting means, which is designed to obtain
The piston 43 is fitted so as to be able to reciprocate, and the tip portion of the piston 43 in the propelling direction D1 projects forward of the tip end outer cylinder 41 in the propelling direction D1. Thus, the tip outer cylinder 41, the tip inner cylinder 42, and the piston 43 also serve as the structure of the vibration generator 4.

An oil chamber 44 is formed in a rear portion of the inner circumference of the tip end outer cylinder 41, a middle portion of the outer circumference of the tip end inner cylinder 42, and a space surrounded by the rear end of the piston 43. An oil chamber 45 is formed in a space surrounded by the circumferential step portion and the outer circumferential step portion on the tip end side of the tip end inner cylinder 42. The front end outer cylinder 41 has an oil passage 41 whose front end opens to the oil chamber 44 and whose rear end opens to the rear surface of the front end outer cylinder 41.
The front end inner cylinder 42 has an oil passage 42a whose front end opens to the oil chamber 45 and whose rear end opens to the rear surface of the front end inner cylinder 42.

A hollow disk-shaped seat 46 is provided at the tip of the piston 43, which projects forward from the tip outer cylinder 41 in the propulsion direction D1.
Is attached, and the tip head 47 of the vibration generator 4 is replaceably attached to the tip portion of the seat 46 in the propelling direction D1. In the illustrated example, the tip head 47 has a driving direction D1.
Although it has a truncated cone shape that tapers toward the front, it may have a flat shape instead of an umbrella shape depending on the soil quality of the soil into which the tip device 1 is press-fitted. Thus, the oil chamber 4
By supplying / discharging oil to / from 4, 45, the tip head 47 is oscillated reciprocally in the direction parallel to the propulsion direction D1 via the piston 43, so that the soil can be vibrated. The tip head 47 has the same structure as the tip head 2,
The outer diameter is formed to be slightly larger than the outer diameter of the tip outer cylinder 41. This is done so that an excessive resistance force does not act on the tip outer cylinder 41 when the tip device 1 is press-fitted. This is because

In the inner space of the tip end inner cylinder 42, the detector component 48a fixed in the inner space and the detector component 4 attached to the bracket 49 supported on the seat 46 side.
And a magnetic force type stroke detector 48, which is provided with 8b and can detect the amount of displacement of the piston 43 in the propulsion direction D1, is arranged so as to be located at the axial center position of the piston 43.

The tapered surface of the tip head 47 has a plurality of vibration generating sides for supplying a lubricant such as bentonite discharged radially outward of the tip head 47 along the tapered surface into the soil in the ground. The lubricant material supply nozzles 50 of the nozzle means are provided at regular intervals in the circumferential direction.
A lubricant supply pipe 51 is connected to the. Further, an earth pressure detector 52 for detecting earth pressure when the tip device 1 is press-fitted is attached to an axial center portion of the tip of the tip head 47. Acceleration detector 53 for detecting acceleration when the head 47 is vibrated
Are arranged.

The tip outer cylinder 41 is formed at the rear end thereof in the propulsion direction D1 and is concentric with the front outer cylinder 41 and has substantially the same outer diameter, and a lid 54 is attached to the rear end of the propulsion direction D1. The hollow rear tubular body 55 is connected to the rear tubular body 55.
In the hollow portion, various equipments of the hydraulic circuit and various equipments of the control system necessary for vibrating the tip head 47 in the direction parallel to the propulsion direction D1 are housed.

The equipment housed in the rear cylinder 55 is a servo-type electromagnetic control valve 56 constituting a hydraulic circuit, accumulators 57 and 58, and a stroke detector 4 in the control system.
8 is an amplifier, an acceleration detector 53 is an amplifier, a wire-saving unit, and the like. In addition, the oil passages 41a and 42a have a pipe 5
The ends of the pipes 9, 60 are connected, and the pipes 59, 60 extend rearward in the propelling direction D1 of the tip device 1 through the inside of the rear tubular body 55, and the pipes 59 are servo-type electromagnetic control valves. 56
It is connected to the. Further, the rear ends of pipelines 81, 83 in FIG. 8 described later connected to the electromagnetic control valve 56 are connected to couplers 61, 62 of means for attaching hydraulic pressure to the lid 54, and the pipeline 60 is It is connected to a midway portion of the pipeline 81.

The conduit 60 may be connected to the electromagnetic control valve 56 as shown by the phantom line in FIG.

A tip of a pipe line 63 is connected to the lubricant supply nozzle 50, and the pipe line 63 is connected to the piston 43 and the tip end inner cylinder 4.
2 and backward hollows of the rear tubular body 55, and the rear ends of the rear tubular body 55 are joined together and connected to a coupler 64 attached to the lid 54.

Further, the lid 54 is provided with a coupler 65 for supplying electricity to each member.

The lid 54 corresponds to the connecting portion 11 when the vibration generator 4 shown in FIG. 2 is connected to the attachment 16 or the direction correcting device 6, and the attachment 16
Connection to the couplers 61, 62 of the lid 54, the hydraulic couplers 31, 32 of the attachment 16
To the coupler 64 of the lid 54
The electric coupler 35 of the attachment 16 is connected to the coupler 65 of the sliding member 6 of the reference numeral 6 at once with respect to the coupler 65 of the lid 54 so that the vibration generator 4 can be driven.

In FIGS. 5 and 7, 33b is an inner cylinder 42 at the front end.
The piston 43 is a key-shaped detent member projecting on the inner periphery of the piston 43 so that it can be guided by a guide means 42b having a channel-shaped cross section, which is fixed to the distal end portion of the piston 43 so as to extend parallel to the driving direction D1. The piston 43 is prevented from rotating in the circumferential direction when moving forward and backward in the direction parallel to the propulsion direction D1.

A hydraulic circuit diagram for vibrating or advancing the tip head 47 via the piston 43 is shown in FIG. 8, 66 is a hydraulic unit, and 67 is a vibrating hydraulic circuit.

The hydraulic unit 66 is installed on the ground, and on the discharge side of the hydraulic pump 69 driven by the electric motor 68, a check valve 70 and a check valve 77 with a variable throttle are provided midway.
Further, a pipe line 72 to which a coupler 71 is connected is connected to the tip of the oil flow direction D2. The hydraulic unit 66 has a return pipe 75 connected to the coupler 73 at the rear end of the oil flow direction D2 and adapted to return the oil to the tank 74. The hydraulic pump 69 sends the oil sucked from the tank 74 to the hydraulic pump 69. The suction line 76 to be supplied is connected.

Further, on the downstream side of the check valve 70 in the oil flow direction D2 in the pipe 72, the other end of the pipe 79 connected to the return pipe 75 at one end is connected to the switching valve 78 at an intermediate portion. It is connected. 80 of the equipment of the hydraulic unit 66 is a safety valve.

Each device constituting the hydraulic circuit 67 is housed in the rear cylindrical body 55, and the attachment 16 or the direction is provided at the rear end of the pipe 81 having the oil flow direction D2 tip connected to the electromagnetic control valve 56. The coupler 7 of the hydraulic unit 66 is passed through the correction device 6 and the hydraulic hose 17 of the line 15.
A coupler 61 adapted to be connected to 1 is connected. Further, an accumulator 57 for compensating the pressure of the oil fed to the oil chambers 44, 45 is connected downstream of the connection position of the accumulator 57 in the pipe line 81 in the oil flow direction D2.

The attachment 16 is attached to the front end of the return pipe 83 connected to the electromagnetic control valve 56 at the rear end in the oil flow direction D2.
Alternatively, the coupler 62, which can be connected to the coupler 73 of the hydraulic unit 66 via the hydraulic hose 18 of the line 15 through the direction correcting device 6, is connected, and the return line 8
An accumulator 58 for preventing pulsation of the oil flowing through the return conduit 83 is connected to a middle portion of the valve 3.

A safety valve 85 is connected to a pipeline 94 connecting a portion of the pipeline 81 upstream of the connecting portion of the accumulator 57 in the oil flow direction D2 and a midway portion of the return pipeline 83, and a midway portion of the pipeline 59 is connected. A safety valve 87 is connected to a pipe line 86 connected upstream of the accumulator 58 connection part of the return pipe line 83 in the oil flow direction D2. In the hydraulic circuit 67, 88 is a drain tank installed in the rear tubular body 55 so as to receive oil leaked from a seal portion (not shown).

The control device for vibrating the tip head 47 via the piston 43 is shown in FIG. 9, and the earth pressure P acting on the tip head 47 detected by the earth pressure detector 52 is shown.
1. Acceleration α when the tip head 47 is excited by the acceleration detector 53, the piston 43 detected by the stroke detector 48, that is, the displacement amount L of the tip head 47 in the direction parallel to the propelling direction D1, the pressure detector The oil pressure P2 in the oil chamber 44 detected at 89 is a detection signal, and the control device 1 installed on the ground
4 to the arithmetic control unit 91.

The vibration frequency fo when the tip head 47 is vibrated, the displacement amount Lo when the tip head 47 is vibrated,
The displacement amplitude Ca, the thrust F (load W) when the tip device 1 is press-fitted into the ground, and the load amplitude Wa are the vibration control conditions from the host system control device 92 such as a CPU or the operator, and the arithmetic control unit of the control device 14. The control mode switching command C1 and other operation commands C2 can also be given to the arithmetic control unit 91 of the control device 14. Further, the operation state information I can be given from the arithmetic and control unit 91 of the control device 14 to the host control device 92.

Further, based on various data given from the host system control device 92 and the like, the operation control part 91 in the control device 14 can give a switching command V to the electromagnetic control valve 56. In FIG. 9, reference numeral 93 is a display unit for displaying operation state data from the arithmetic and control unit 91 in the control device 14.

Next, the operation of the illustrated example of the vibration generator 4 will be described. When the distal end device 1 equipped with the vibration generator 4 is dynamically press-fitted, the piston 43 has a neutral position which is in the middle of the maximum stroke. When the safety valves 85 and 87 of the hydraulic circuit 67 shown in FIG. 8 are stopped at the position, the pressure is adjusted so that PO1> PO2 when the set pressure of the safety valve 85 is PO1 and the set pressure of the safety valve 87 is PO2. It is being appreciated.

In the hydraulic unit 66, the hydraulic pump 69 is driven by the electric motor 68 in a state where the switching valve 78 is switched so that the oil flows, and the oil discharged from the hydraulic pump 69 is supplied to the pipes 72, It circulates to the tank 74 through 79, the switching valve 78, and the return line 75.

Further, from the host system controller 92, the vibration frequency fo of the tip head 47, the displacement amount Lo, the displacement amplitude Ca,
Thrust F (load W) generated in the tip head 47, load amplitude Wa, control mode switching command C1, and other operation command C
2 and the like are given to the arithmetic control unit 91 in the control device 14. Therefore, by turning on the operation start operation button, the arithmetic control unit 91 of the control device 14 gives a switching command to the switching valve 78 of the hydraulic unit 66 so that the oil in the pipeline 79 passes through the switching valve 78. Switch to not
Further, the switching command V is given to the electromagnetic control valve 56 at a time interval determined by the vibration frequency fo, and the electromagnetic control valve 56 causes the line 8 to move.
1 and the conduit 59 are communicated with each other, or the conduit 59 and the return conduit 83 are communicated with each other.

Therefore, in the electromagnetic control valve 56, the conduit 8
When 1 and 59 are switched so as to communicate with each other, the oil discharged from the hydraulic pump 69 passes through the pipeline 72, the attachment 16 or the direction correcting device 6, and passes through the hydraulic hose 17 of the line 15 to the pipeline 81. Through the electromagnetic control valve 56, the oil is introduced from the pipe 59 to the oil chamber 44 via the oil passage 41a, the oil in the oil chamber 45 is discharged, and the oil passage 42a is discharged to the pipes 60, 81 and the electromagnetic control valve. 56, pipe 59, oil passage 41a
Through the oil chamber 44. Therefore, the piston 43 moves forward in the propulsion direction D1 by a predetermined amount.

When the electromagnetic control valve 56 is switched so that the conduit 59 and the return conduit 83 are communicated with each other, the oil discharged from the hydraulic pump 69 is used as the conduit 72, the attachment 16 or the direction correcting device. 6 through line 15
Oil lines 42 from the pipe lines 81 and 60 via the hydraulic hose 17 of
The oil introduced into the oil chamber 45 via a is transferred from the oil passage 41a to the pipe 59, the electromagnetic control valve 56, and the return pipe 8 through the oil passage 41a.
3, passing through the attachment 16 or the direction correcting device 6, through the hydraulic hose 18 of the line 15, and returning to the tank 74 through the return pipe line 75. Therefore, the piston 43 retracts by a predetermined amount in the direction opposite to the propulsion direction D1.

Then, by reciprocally exciting the piston 43 in the direction parallel to the propulsion direction D1 with a predetermined vibration frequency, amplitude and thrust, the tip head 47 is moved in the direction parallel to the propulsion direction D1 under the above-mentioned conditions. The tip head 47 is vibrated, and vibration is applied to the soil around the tip head 47. Therefore, the soil is fluidized and the shearing resistance is reduced. As a result, when the tip device 1 is pressed by the original pressing device 8 shown in FIG.
The tip device 1 is easily, reliably and promptly pressed into the soil to form a tunnel by the tip device 1, and similarly, the insertion tube 7 can be laid easily, reliably and quickly.

At the time of this vibration and press-fitting, the lubricant is fed through the lubricant supply pipe 51 so that the lubricant supply nozzle 50 causes the tip head 4 to move.
7 is jetted along the taper surface of the tip head 47. Therefore, the fluidity of the soil on the front surface of the tip head 47 is improved, and the tip device 1 is press-fitted more smoothly.

Further, when the piston 43 is moved forward by the full stroke, not only the tip head 47 is vibrated but also it can be used as a sub-propelling mechanism instead of the former pushing device 8.

When the tip device 1 is press-fitted, the stroke detector 48 determines the displacement amount L of the piston 43 and thus the tip head 47, and the earth pressure detector 52 detects the earth pressure P1 acting on the front surface of the tip head 47. Further, the acceleration detector 53
Therefore, the acceleration α of the tip head 47 at the time of reciprocating vibration is further increased by the pressure detector 89.
Are respectively detected and the arithmetic and control unit 9 in the control device 14 is detected.
1, the predetermined calculation is performed, and the electromagnetic control valve 5
The switching command V given to 6 is controlled to a predetermined state.

Therefore, the vibration frequency fo, the displacement amount Lo, the displacement amplitude Ca, the thrust force F (load W), and the load amplitude Wa of the piston 43 at the time of vibration are arbitrarily set, and the tip end is based on the above-mentioned detection data. The tip device 1 can be press-fitted while controlling the amplitude of the head 47 when vibrating and the thrust applied to the tip head 47 to a preset predetermined state. Feedback control is adopted as the control.

In contrast to the vibration generator 4 constructed as described above, the direction correcting device 6 of the tip device 1 is shown in FIGS. 10 to 14, and will be described in detail below.

In the direction correcting device 6, the direction correcting section 101 having the bent portion 5 is composed of the front cylindrical portion 102 of the front portion and the rear cylindrical portion 103 of the rear portion.

The front cylindrical portion 102 is connected to the connecting portion 11 of the vibration generator 4 via the connecting portion 12 which is detachable from the front wall 105.
The first outer cylinder 106 formed to have substantially the same diameter as the vibration generator 4 and the cylindrical shape formed to be concentric with the first outer cylinder 106 behind the front wall 105 in the propulsion direction D1. Inner cylinder 107
And the inner cylinder 107 is longer than the length of the first outer cylinder 106 in the direction parallel to the driving direction D1.

In the vicinity of the front wall 105 of the inner cylinder 107, there is provided a convex spherical seat 108 centered on the axis of the inner cylinder 107, and the surface of the convex spherical seat 108 is made of carbon or the like. Solid lubricant film 109 is formed.

Next, the rear cylindrical portion 103 located behind the front cylindrical portion 102 in the propelling direction D1 is provided with a second outer cylinder 110 having substantially the same diameter as the first outer cylinder 106 of the front cylindrical portion 102,
At the tip of the second outer cylinder 110, a concave spherical surface located between the first outer cylinder 106 and the inner cylinder 107 of the front cylindrical portion 102 and widely receiving the convex spherical seat 108 in the projected area in the propulsion direction D1. The concave spherical seat 111 is provided with a solid lubricating coating 112 such as carbon similar to that of the convex spherical seat 108 on the inner peripheral surface of the concave spherical seat 111.
A plurality of annular grooves 113 (two in FIG. 10) are provided on the outer peripheral surface of 11, and the annular groove 113 has a first outer cylinder 106 of the front cylindrical portion 102 and a concave spherical seat 111 of the rear cylindrical portion 103.
A U-shaped packing 114 is fitted so that the earth and sand do not flow into the inside from the space between.

Further, the annular groove 1 is formed on the outer peripheral surface of the concave spherical seat 111.
The rear end of the first outer cylinder 106 of the front cylindrical portion 102 on the rear side in the propulsion direction D1 does not come into contact with the outer peripheral surface of the concave spherical seat 111 when the front cylindrical portion 102 tilts. A groove 115 having a size is provided.

In the rear of the rear cylindrical portion 103, the concave spherical seat 111 of the second outer cylinder 110 in the driving direction D1 is located behind the concave spherical seat 111 in FIG.
0, as shown in FIG. 12, the pressing drive means is positioned so as to be located farthest to the rear in the propulsion direction D1 from the center of rotation of the convex spherical seat 108 in the inner cylinder 107, that is, at the rear end of the inner cylinder 107 in the propulsion direction D1. The four jacks 116 are provided, and the four jacks 116 surround the inner cylinder 107 at equal intervals in the circumferential direction and are configured as a pair of two that sandwich the inner cylinder 107 in the radial direction.

Here, the outer peripheral surface of the inner cylinder 107 and the jack 1
The structure of the inner cylinder 1 will be described with reference to FIG.
The outer peripheral surface of 07 has a plurality of planes extending tangentially (see FIG.
2), the slide bearing plate 117 is arranged to form four places, and the tip of the jack 116 comes into surface contact with the slide bearing plate 117, and the jack 116 has a spherical surface adjacent to the face-contacting tip. The seat 118 is provided.

Then, the second outer cylinder 1 of the rear cylindrical portion 103
Between the plurality of jacks 116 of the inner cylinder 10,
Two stroke detectors 119 extending in the radial direction of the inner cylinder 107 are arranged at a substantially right angle so as to be displaced in the circumferential direction of the inner cylinder 107, and between the remaining jacks 116, the inner cylinder 107 of the inner cylinder 107 is disposed between the remaining jacks 116. Two earth pressure detectors 120 extending in the radial direction
Are arranged at right angles by being shifted in the circumferential direction of the inner cylinder 107.

On the other hand, as shown in FIG. 10, the rear cylindrical portion 10
The rear end portion of the driving direction D1 of 3, that is, the rear end portion of the direction correcting portion 101 of the direction correcting portion 101 is formed concentrically with the second outer cylinder 110 of the rear cylindrical portion 103 and has substantially the same outer diameter. A hollow rear cylinder part 122 having a lid 121 attached to the rear end of the direction D1 is connected to the inside of the hollow part of the rear cylinder part 122, and a hydraulic pressure required to tilt the front-stage cylinder part 102 of the direction correcting part 101 is provided. Each model of the circuit and various devices of the control system are stored.

The equipment housed in the rear tube portion 122 is
An electromagnetic control valve 124 of a three-position switching valve that constitutes a hydraulic circuit,
The pressure detector 125 corresponding to each jack 116, the rear tubular portion 1 so as to supply a lubricant such as bentonite into the soil in the ground.
The lubricant material supply nozzle 126 of the direction correcting side nozzle means formed on the circumferential surface of 22; the amplifier for the stroke detector 119 in the control system; the gyro 127 that controls the propulsion direction D1; and the position detected on the ground by the generated magnetic field. An electromagnetic coil 128 for causing the battery 129 to supply power to each member,
It is a wire-saving unit. Further, the two pairs of jacks 116 each composed of two are connected to the respective electromagnetic control valves 124 corresponding to the respective groups via the conduit 130 extending rearward of the propulsion direction D1 of the tip apparatus 1. And a conduit 131 in FIG. 13, which will be described later, connected to each electromagnetic control valve 124.
The rear end of 132 is connected to the feed pipe line 137 and the return pipe line 138, and the feed pipe line 137 and the return pipe line 138 are connected to the lid body 121 to which the hydraulic hoses 17 and 18 of the line 15 are connected.
The connecting means couplers 133 and 134 and the vibration generating device couplers 61 and 62 are connected through the connecting means couplers 135 and 136.

The tip of the pipe 139 is connected to the lubricant supply nozzle 126, and the pipe 139 extends rearward through the hollow portion of the rear tubular portion 122 and is connected to the coupler 140 attached to the lid 121. Has been done. Further, a branch portion (not shown) is provided at an intermediate position of the pipeline 139, and a pipeline 142 extending from the branch portion to the front side through the hollow portion of the rear tubular portion 122.
Are connected to a coupler 141 which is attachable to and detachable from the coupler 64 of the vibration generator 4.

The lid 121 is provided with a coupler 143 for supplying electricity to each member, and the connecting portion 12 is provided with a coupler 144 for supplying electricity to the vibration generator 4.

Here, the lid 121 corresponds to the connecting portion 13 when the line 15 is connected to the direction correcting device 6 shown in FIG. 2, and when the line 15 is connected, the coupler 133 of the lid 121 is connected. The connectors 22 and 23 of the hydraulic hoses 17 and 18 are connected to the connector 134, the connector 25 of the lubricant hose 20 is connected to the coupler 140 of the lid 121, and the electric cable 19 is connected to the coupler 143 of the lid 121. The connector 24 is a coupler (not shown) for the depth gauge formed on the lid 121.
In contrast to this, the connectors 26 of the hydraulic depth gauge hose 21 are connected at once to enable the direction correcting device 6 to be driven.

When the vibration generator 4 is connected to the direction correcting device 6, the couplers 61 and 62 of the lid 54 are connected to the couplers 135 and 136 of the connecting portion 12, and the coupler 141 of the connecting portion 12 is connected. The coupler 64 of the lid 54 is connected to the coupler 144 of the connecting portion 12 and the coupler 65 of the lid 54 at a time, so that the vibration generator 4 can be driven.

In FIG. 11, reference numeral 145 denotes a key-shaped detent member which is provided at the rear end of the first outer cylinder 106 of the front cylindrical portion 102 in the propulsion direction D1 so as to project.
Is guided by the notch guide means 146 provided at the tip of the second outer cylinder 110 of the rear cylindrical portion 103 in the propulsion direction D1 so as not to rotate the front cylindrical portion 102 in the circumferential direction during propulsion. There is.

A hydraulic circuit for changing the direction of the front cylindrical portion 102 by the jack 116, that is, the propelling direction D1 of the tip device 1 is shown in FIG. 13, where 66 is a hydraulic unit and 151 is a hydraulic circuit for tilting. is there.

The hydraulic unit 66 is the same as that described for the vibration generator 4, and the description thereof is omitted here.

Each device constituting the hydraulic circuit 151 is housed in the rear tubular portion 122, and the coupler 133 which can be connected to the coupler 71 of the hydraulic unit 66 via the hydraulic hose 17 of the line 15 includes: A coupler which is provided with a feed pipe line 137 leading to a coupler 135 connectable to a hydraulic circuit 67 of the vibration generator 4 and which can be similarly connected to a coupler 73 of a hydraulic unit 66 via a hydraulic hose 18 of a line 15. The return pipe line 138 is connected to the coupler 136 that can be connected to the hydraulic circuit 67 of the vibration generator 4.

The rear end of the pipeline 131 connected to the two electromagnetic control valves 124 is connected to the midway portion of the feed pipeline 137, and the two midway portions of the return pipeline 138 are connected to the two electromagnetic control lines. A single conduit 167 is provided at the rear end of the conduit 72 connected to the valve 124.
Is connected to each other, and a predetermined relief valve 168 is provided in the one combined pipeline 167.

On the other hand, the electromagnetic control valve 124 is provided with a pipe line 171 connected to the pipe line 130 leading to the head side oil chamber 169 of each jack 116 and having a check valve 170 with a variable throttle. Check valve 170 is equipped with jack 116
The flow rate of the oil returning from the head side oil chamber 169 is controlled.

Further, a pipe line 173 having a check valve 172 is connected to a midway portion from the connection position of the pipe line 171 to the check valve with variable throttle 170, and the pipe line 173 is a single pipe line. 174
Are connected to the return line 138 via the relief valve 175 of the second valve.

Here, the relief valve 168 is provided with a head side oil chamber 169 of the return-side jack 116, which is opposed when the predetermined jack 116 presses the inner cylinder 107 to press the opposing jack 116, and a pipe line. 130, pipeline 1
71, the pressure of a series of flow paths of the electromagnetic control valve 124 is set to a predetermined pressure so as not to become zero.

The front cylindrical portion 102 is connected via the jack 116.
The control device for tilting is shown in FIG. 14, and the jack pressure P3, which is the thrust of each jack 116 detected by the pressure detector 125, and the inner cylinder 107 and thus the front cylinder, detected by the stroke detector 119. Displacement direction X of the part 102
1. The soil pressure P4 acting on the second outer cylinder 110 of the rear cylindrical portion 103 detected by the soil pressure detector 120 can be given to the arithmetic control unit 91 of the control device 14 installed on the ground as a detection signal, respectively. Has become.

The selection Sa of the jack 116 and the extension amount La of the jack 116 when the front cylindrical portion 102 is tilted are C
From a higher-level control device 92 such as PU or an operator,
The operation control unit 91 of the control device 14 can be set, and other operation commands C3 can be given to the operation control unit 91 of the control device 14. Also, the control device 1
The operation state information I, which is substantially the same as in the case of the vibration generator 4, can be given from the arithmetic and control unit 91 of No. 4 to the host control unit 92.

Further, based on various data given from the host controller 92 and the like, the arithmetic control unit 91 in the controller 14 can give a switching command V1 to the electromagnetic control valve 124. In FIG. 14, 93 is the vibration generator 4.
The calculation control unit 91 in the control device 14 that is substantially the same as
It is a display part for displaying the operation state data from.

Next, the operation of the illustrated example of the direction correcting device 6 will be described.

When changing the direction of the tip device 1,
The relief valve 168 and the relief valve 175 of the hydraulic circuit 151 shown in FIG. 13 set the set pressure of the relief valve 168 to PO1,
When the set pressure of the relief valve 175 is PO2, it is always P
The pressure is adjusted so that O1 <PO2, and in the hydraulic unit 66, the hydraulic pump 69 is driven by the electric motor 68 in a state in which the switching valve 78 is switched so that the oil flows, as in the case of the vibration generator 4. The oil discharged from the hydraulic pump 69 is circulated to the tank 74 through the pipe lines 72 and 79, the switching valve 78, and the return pipe line 75.

Further, from the host system control device 92, the tip device 1
That is, signals such as the selection Sa of the jack 116 corresponding to the displacement direction and the displacement amount of the front cylindrical portion 102, the extension amount La of the jack 116, and other operation commands C3 are transmitted to the control device 14.
Is given to the calculation control unit 91. Therefore, by turning on the operation button for starting the change of the propulsion direction D1, the control device 14 can be operated in the same manner as in the case of the vibration generator 4.
From the calculation control unit 91 of the switching valve 78 of the hydraulic unit 66.
To switch the oil in the pipeline 79 from passing through the switching valve 78, and at the same time, the switching command is given to at least one of the two electromagnetic control valves 124 of the hydraulic circuit 151 to cause a pair of jacks. One of the lines 17
1 is connected to the pipeline 131 on the feeding side and the other pipeline 1
71 is connected to the return side conduit 132, or the other conduit 171 is connected to the feeding side conduit 131 and one conduit 171 is switched to the return side conduit 132. There is.

Therefore, in one of the two electromagnetic control valves 124, the pair of jacks 11
When one of the six pipelines 171 is connected to the pipeline 131 on the feeding side and the other pipeline 171 is connected to the pipeline 132 on the return side, the hydraulic pump 69 discharges the fluid. Oil is introduced into the head side oil chamber 169 of the jack 116 through the pipe 72, the hydraulic hose 17 of the line 15, the pipes 137 and 131, the electromagnetic control valve 124, the pipe 171 and the pipe 130. The inner cylinder 107 is pressed by extending the jack 116, and at the same time,
The oil in the head side oil chamber 169 of the opposing jack 116 is discharged, and the electromagnetic control valve 1 is passed through the other pipelines 130 and 171.
24, the pipeline 132, the pipeline 167, the relief valve 168, the return pipeline 138, the hydraulic hose 18 of the line 15, and the pipeline 75 to the tank 74.

Further, in one electromagnetic control valve 124 of the two electromagnetic control valves 124, the other pipe line 171 of the pair of jacks 116 is connected to the feeding side pipe line 131 and the one pipe line 171 is connected. When the oil is discharged from the hydraulic pump 69 when it is switched to be connected to the return line 132, the oil discharged from the hydraulic pump 69 is transferred to the line 72, the hydraulic hose 17 of the line 15,
After passing through the electromagnetic control valve 124 via the pipes 137 and 131, the other side pipe 171 in the above case is introduced into the head side oil chamber 169 of the jack 116 on the opposite side via the pipe 130, and the jack 116 on the opposite side is introduced. By extending the inner cylinder 107
Are pressing in the opposite direction, and at the same time, the opposing jack 1
The oil in the head side oil chamber 169 of 16 is discharged, passes through one of the pipelines 130 and 131 in the above case, passes through the electromagnetic control valve 124, and from the pipeline 132 to the pipeline 167 and the relief valve 168.
Through the return line 138, line 15 hydraulic hose 1
8. Returning to the tank 74 through the pipe line 75.

Furthermore, in the other electromagnetic control valve 124 of the two electromagnetic control valves 124, the other pair of jacks 11
6 operates, one of the above electromagnetic control valves 124
When the two electromagnetic control valves 124 are simultaneously operated, the two pairs of jacks 116 are extended in the vertical direction and the pressing direction of the inner cylinder 107 is the extension direction of the two pairs of jacks 116. It will be a combination of.

Here, the tilting angle of the inner cylinder 107 is the inner cylinder 1
It can be obtained by detecting tilt data by two stroke detectors 119 arranged in a substantially right angle and displaced in the circumferential direction of 07, and calculating the detected value.

When the predetermined jack 116 is extended by a predetermined amount, the jack 116 radially presses the inner cylinder 107 of the front cylindrical portion 102, and the spherical center of the convex spherical seat 108 serves as the center of rotation. The front-stage cylindrical portion 102 is tilted by a predetermined displacement amount, and the vibration generator 4 is oriented in a desired direction.

Subsequently, when the propulsion direction D1 of the tip device 1 is further changed, the jack pressure P3 by the pressure detector 125 and the displacement direction X1 of the front cylindrical portion 102 by the stroke detector 119 are further changed. The earth pressure P4 acting on the outer peripheral surface of the rear stage cylindrical portion 103 by the earth pressure detector 120 is
The electromagnetic control valve 124 is controlled to an appropriate state by the switching command V1 by being detected and given to the arithmetic control unit 91 in the control device 14 and performing a predetermined arithmetic operation.

Therefore, the control device 14 arbitrarily sets the selection Sa of the jack 116, the extension amount La of the jack 116, and other operation commands C3 corresponding to the displacement direction and displacement amount of the front cylindrical portion 102 at the time of tilting. At the same time, the tilting direction can be controlled by controlling the tilting direction of the front-stage cylindrical portion 102 to a preset predetermined state based on the above-mentioned detection data.

As described above, the direction correcting device 6 of the tip device 1 is used.
Is configured.

Therefore, when propelling the device into the ground,
Normally, the vibration generating device 4 and the direction correcting device 6 are connected and propelled, and the vibration generating device 4 is provided with the oil chamber 44, the oil chamber 45, the oil passage 41a of the vibration generating device 4 through the direction correcting device 6.
The driving force is transmitted to the driving means of the oil passage 42a, the pipeline 59, and the pipeline 60, and the signal of the control means of the electromagnetic control valve 56 is transmitted and received, and the stroke detector 48 and the earth pressure detector 5 are transmitted.
2. The signals of the measuring means of the acceleration detector 53 and the pressure detector 89 are exchanged. Further, when the tip device 1 is separated and carried into the vertical shaft 9, the vibration generator 4 and the direction correcting device 6 are separated so that the functions of the above-mentioned drive means, control means and measuring means of the vibration generator 4 remain. The vibration generator 4 is carried into the shaft 9, and an attachment 16 is connected to the separated vibration generator 4 to transmit the driving force to the driving means of the vibration generator 4 and to send signals from the control means and the measuring means. Give and receive

Thus, when the vibration generator 4 is separated and carried into the shaft 9, as shown in FIG. 15, the vibration generator 4 is not connected to the direction correcting device 6 and the oil is passed through the attachment 16. The driving means such as the chamber 44, the oil chamber 45, the oil passage 41a, the oil passage 42a, the pipeline 59, and the pipeline 60 are driven, and at the same time, the control means such as the electromagnetic control valve 56 for controlling the driving means is operated and propelled. Since the stroke detector 48, the earth pressure detector 52, the acceleration detector 53, and the pressure detector 89 are actuated so as to obtain the measurement data, the vibration generator is used even if only the separated vibration generator 4 is used. 4 can be reliably and stably propelled. Further, when the separated vibration generating device 4 is propelled from the vertical shaft 9, even if the soil around the vertical shaft 9 is hard and cannot be propelled only by pressing, the driving means is driven and the control means is operated. Also, the vibration generator 4 can be easily propelled by operating the measuring means. Furthermore, the vibration generator 4
Since the vibration generator 4 and the driving means, the control means, and the measuring means of the direction correcting device 6 are independent of each other, the function of the direction correcting device 6 is not necessary when the vehicle and the direction correcting device 6 are connected and propelled. The vibration generator 4 can be driven even if there is a failure or if there is a failure. Furthermore, since the attachment 16 can be connected to the vibration generator 4 so that the vibration generator 4 can be propelled, even if the interface of the vibration generator 4 is different from the interface of the direction corrector 6, it is the same as the direction corrector 6. A hose and a cable can be used, and as a result, only the vibration generator 4 can be easily driven.

When the vibration generator 4 and the direction corrector 6 are connected to propel the ground, the lubricant is discharged to the vibration generator 4 through the direction corrector 6 and only the vibration generator 4 is discharged. When propelling, the lubricant is discharged through the attachment 16, so that the vibration generator 4 can be more reliably and stably propelled even when only the separated vibration generator 4 is used.

When connecting or disconnecting the vibration generating device 4 and the direction correcting device 6 or the vibration generating device 4 and the attachment 16, a means for supplying hydraulic pressure, electricity or lubricant by the connecting portions 11, 12, 13 of the connecting means. Coupler 31,3
2, 33, 34, 61, 62, 64, 65, 135, 1
Since 36, 141, and 144 are integrally attached and detached, the work time required for connection or separation can be shortened.

The embodiment of the present invention is not limited to the illustrated example, and the front portion of the divided tip device is equipped with a non-vibrating auxiliary propulsion mechanism and a direction correcting mechanism. Various mechanisms, such as those equipped with a control mechanism for various drive mechanisms, only a measurement mechanism without a drive mechanism for a vibration generator, and a vibration generator mechanism at the rear of the divided tip device It is not necessary to install a drive mechanism of the direction correcting device and only a measuring mechanism, and various other mechanisms may be used. Needless to say, it may be divided or divided, and other various changes may be made without departing from the scope of the present invention.

[0103]

As described above, according to the tip device of the present invention, various excellent effects as described below can be obtained.

(I) According to the present invention, when the front device is separated and carried into the shaft, the drive means is driven through the attachment without connecting the front device to the rear device, and the drive device is driven. Since the control means for controlling the means is operated and the measuring means for obtaining the measurement data of propulsion is operated, the front device can be reliably and stably propelled even in the case of only the separated front device. . Further, when the separated front device is propelled from the vertical shaft, even if the soil around the vertical shaft is hard and cannot be propelled only by pressing, the driving unit is driven and the control unit and measuring unit are operated. By doing so, the front device can be easily propelled. Further, when the front device and the rear device are connected and propelled, the function of the rear device is not necessary because the driving means, the control means, and the measuring means of the front device and the rear device are independent of each other. Alternatively, the front device can be driven even if there is a failure. Furthermore, since the attachment can be connected to the front device to make it propulsive, use the same hose and cable as the rear device even if the interface of the front device is different from the interface of the rear device. As a result, only the front device can be driven easily. Also, front device
When connecting and propelling the rear device with the rear device,
Discharge the lubricant through the rear device and propel only the front device.
When applying the lubricant, discharge the lubricant through the attachment.
Therefore, even if only the separated front device is used, the front device
Can be promoted more reliably and stably.

(II) In the case of claim 5 of the present invention, the front portion
Connect the device to the rear device or the front device to the attachment.
When connecting or disconnecting, hydraulic, electric, sliding
Since the means for supplying the material can be attached and detached integrally,
In other words, the work time required for separation can be shortened.

[0106] (III) In the case of claim 6 of the present invention, vibration
When the motion generator and the direction corrector are connected and propelled
Discharge the lubricant to the vibration generator through the direction corrector
However, when propelling only the vibration generator, attach
Separated vibration is generated because the lubricant is discharged through the
Even if only the device is used, the vibration generator can be
It can be stably promoted. Claim 7 of the present invention
In case of vibration generator and direction corrector or vibration generator
Connection when connecting or disconnecting the device and attachment
Integrated means to supply hydraulic pressure, electricity, lubricant by means
Since it is attached and detached to and from the
It can be shortened.

[Brief description of drawings]

FIG. 1 is a side view showing an outline of a pipe burying device to which a tip device of the present invention is applied.

FIG. 2 is a schematic view showing a state when the vibration generating device and the direction correcting device of the tip device are separated or connected.

FIG. 3 is a front view of an attachment used when only the vibration generator of the tip device is used.

FIG. 4 is a view taken along the line IV-IV in FIG.

FIG. 5 is a vertical cross-sectional view of a vibration generator used in the tip device of the present invention.

6 is a VI-VI direction arrow view of FIG.

FIG. 7 is a view taken in the direction of arrow VII-VII in FIG.

FIG. 8 is a hydraulic circuit diagram applied to a vibration generator used in the tip device of the present invention.

FIG. 9 is a control system diagram applied to a vibration generator used in the tip device of the present invention.

FIG. 10 is a vertical sectional view of a direction correcting device used in the tip device of the present invention.

FIG. 11 is a side view of a direction correcting device used in the tip device of the present invention.

12 is a view taken in the direction of an arrow XII-XII in FIG.

FIG. 13 is a hydraulic circuit diagram applied to the direction correcting device used in the tip device of the present invention.

FIG. 14 is a control system diagram applied to a direction correcting device used in the tip device of the present invention.

FIG. 15 is a side view showing an outline of a pipe burying device to which only a vibration generating device is applied.

FIG. 16 is a side view showing an outline of a vibration generator used in a conventional press-fitting method.

FIG. 17 is a side view showing an outline of a pipe burying device to which the vibration generator shown in FIG. 16 is applied.

FIG. 18 is a side view showing an outline of a pipe embedding device used in a conventional direction correcting device.

[Explanation of symbols]

2 Tip head 4 Vibration generator (front device) 5 Middle folding mechanism 6 Direction correction device (rear device) 11 Connection part (connection means) 12 Connection part (connection means) 13 Connection part (connection means) 16 attachments 31 Coupler (means for communicating hydraulic pressure) 32 coupler (means for communicating hydraulic pressure) 33 Coupler (means for supplying electricity) 34 Coupler (means for supplying lubricant) 35 coupler (means for supplying electricity) 36 coupler (means for supplying lubricant) 41a Oil passage (driving means) 42a Oil passage (drive means) 43 piston 44 Oil chamber (driving means) 45 Oil chamber (driving means) 47 Tip head 48 Stroke detector (measuring means) 50 Lubricant supply nozzle (vibration generation side nozzle means) 52 Earth pressure detector (measurement means) 53 Accelerometer (measurement means) 56 Electromagnetic control valve (control means) 59 conduit (driving means) 60 conduits (driving means) 61 Coupler (Means for communicating hydraulic pressure) 62 Coupler (means for communicating hydraulic pressure) 64 coupler (means for supplying lubricant) 65 coupler (means for supplying electricity) 89 Pressure detector (measurement means) 106 First outer cylinder 107 inner cylinder 108 Convex spherical seat 110 Second outer cylinder 111 concave spherical seat 116 jack (press drive means) 119 Stroke detector 120 Earth pressure detector 125 pressure detector 126 Lubricant supply nozzle (direction correction side nozzle means) 133 coupler (means for communicating hydraulic pressure) 134 Coupler (means for communicating hydraulic pressure) 135 Coupler (means for communicating hydraulic pressure) 136 coupler (means for communicating hydraulic pressure) 137 Supply pipeline (means for transmitting driving force) 138 Return pipe (means for transmitting driving force) 140 couplers (means for supplying electricity) 141 coupler (means for supplying lubricant) 143 coupler (means for supplying lubricant) 144 coupler (means for supplying electricity)

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yuichi Miura, Yuichi Miura, 3-15-15 Toyosu, Koto-ku, Tokyo Ishikawa Shima Harima Heavy Industries, Ltd. Tokyo Engineering Ring Center (72) Minor Tanaka, Otemachi, Chiyoda-ku, Tokyo 3-3-1 Nihon Telegraph and Telephone Corporation (72) Inventor Toshihiko Takanashi 2-3-1 Otemachi, Chiyoda-ku, Tokyo 3-3-1 Nihon Telegraph and Telephone Corporation (72) Inventor Hidenori Hino 2-Otemachi, Chiyoda-ku, Tokyo Chome No. 3-1-1 Nippon Telegraph and Telephone Corporation (56) References JP-A-10-37671 (JP, A) JP-A-2000-38897 (JP, A) Patent 2914632 (JP, B2) (58) Fields investigated (Int.Cl. ⁷ , DB name) E21D 9/06 311

Claims (7)

(57) [Claims] 1. A front device for propelling into the ground, and a rear device detachably connected to the front device for propelling into the ground together with the front device.
And a detachable attachment adapted to be connected when propelling the front device into the ground without connecting the rear device to the front device, wherein the front device is provided in the front device. driving means for driving a predetermined means which is control means, or Rutotomoni comprising at least drive means of the measuring means, to the outside
Front part nozzle means for discharging lubricant, said rear part means for transmitting a driving force to the drive part of said front part part, means for transmitting and receiving a signal between said control means, and said measurement Rutotomoni comprises means for transmitting a driving force to at least the drive means of the means for exchanging signals between the means, rear nozzle for discharging the lubricating material to the outside
Of the lubricant to the front side nozzle means of the front device.
And a means for transmitting and receiving a signal between the means for transmitting a driving force to the driving means of the front device and the control means when the attachment is connected to the front device. means well Rutotomoni comprise means for transmitting a driving force to at least the drive means of the means for transferring a signal to and from the measuring means for the front side nozzle of said front device
A tip device comprising a means for feeding a lubricant to the lever means . 2. A vibration generator for applying vibration to the ground, and a direction correction which is detachably connected to the vibration generator and is capable of correcting the propulsion direction of the vibration generator. Device and a detachable attachment adapted to be connected when propelling the vibration generating device into the ground without connecting the direction correcting device to the vibration generating device, the vibration generating device, A vibration applying means for applying a vibration to at least one of the driving means, at least a driving means for driving the vibration applying means, a control means, or a measuring means, and the direction correcting device changes the propulsion direction of the vibration generating device. Between the propulsion direction correcting means, the means for transmitting a driving force to the driving means of the vibration generator, and the means for transmitting / receiving a signal to / from the control means, and the measuring means. A means for transmitting a driving force to at least a driving means among means for transmitting and receiving a signal, wherein the attachment has a driving force for the driving means of the vibration generating device when the attachment is connected to the vibration generating device. And a means for transmitting and receiving a signal to and from the control means, and a means for transmitting a driving force to at least a driving means among the means for transmitting and receiving a signal to and from the measuring means. A leading edge device. 3. A vibration generator for imparting vibration to the ground, and a direction correction which is detachably connected to the vibration generator and is capable of correcting the propulsion direction of the vibration generator. Device and a detachable attachment adapted to be connected when propelling the vibration generating device into the ground without connecting a direction correcting device to the vibration generating device, wherein the vibration generating device has a tip portion. A piston that vibrates in the propulsion direction is fitted in a space formed between the outer cylinder and the inner cylinder of the tip portion, and a driving unit, a control unit, or a driving unit for driving the piston inside the vibration generator main body, or At least a driving means is provided in the measuring means, and the direction correcting device is installed in the first outer cylinder and in the second outer cylinder, and at the same time, the direction correcting device is mounted on the convex spherical seat. To fit Of the concave spherical seat, the pressing drive means for changing the propelling direction of the vibration generator through the convex spherical seat, the means for transmitting the driving force to the drive means of the vibration generator, and the control means. A means for transmitting and receiving a signal between the measuring means and a means for transmitting a driving force to at least a driving means among the means for transmitting and receiving a signal to and from the measuring means, wherein the attachment is the vibration generating device. Connected to the means for transmitting a driving force to the drive means of the vibration generator and a means for transmitting and receiving a signal to and from the control means, and a means for transmitting and receiving a signal to and from the measuring means. A tip device comprising a means for transmitting a driving force to at least a driving means among the means. 4. A stroke detector for detecting the stroke of the piston, an acceleration detector for detecting the acceleration of the tip head or the piston, and an acceleration detector for detecting the acceleration of the piston to detect the vibration state of the piston inside the vibration generator body. At least one of a pressure detector for detecting the pressure of the fluid for actuating and a soil pressure detector for detecting the soil pressure acting on the tip of the piston is provided, and the inside of the direction correcting device main body is provided. In addition, in order to detect the tilting angle of the vibration generator ,
A stroke detector that detects the tilting angle of the inner cylinder of the front-stage cylindrical portion to detect the direction, a pressure detector that detects the hydraulic pressure of the pressing drive means to detect the moment generated by the tilting of the vibration generator, and a direction correction The tip device according to claim 3 , further comprising at least one measuring unit of a soil pressure detector for detecting a soil pressure acting on an outer cylinder of the device. 5. A front device and a rear device or a front device.
When connecting or disconnecting the attachment, hydraulic or electric
Connection means for integrally providing a means for supplying air and lubricant
The tip device according to claim 1, which is provided. 6. A vibration generator discharges a lubricant to the outside.
Equipped with vibration-generating side nozzle means, to the direction correction device, to the outside
Nozzle means for correcting the direction for discharging the lubricant, and the vibration generation
Equipped with means for feeding lubricant to the nozzle means on the vibration generating side of the device
If the attachment causes the vibration,
When connected to a live device, the vibration generator
A method comprising means for feeding a lubricant to the raw side nozzle means.
The tip device according to 2, 3, or 4. 7. Vibration generator and direction correction device or vibration
When connecting or disconnecting the motion generator and attachment
Integrated with means for supplying hydraulic, electric and lubricant
A tip device according to claim 2, 3, 4 or 6, further comprising connecting means.
Place