JP3013172B1 - Pipe embedding equipment - Google Patents

Abstract

A pipe burying device can be easily obtained by exchanging a conventional hydraulic shovel bucket and connecting a swing motor drive hose without requiring a dedicated machine for shaft excavation. SOLUTION: A bracket is suspended from the tip of an arm of a hydraulic excavator so as to swing freely, a turning motor is provided on the bracket, and a pipe holding member is rotatably mounted below the bracket by the turning motor. And a center shaft is vertically attached to the center of rotation of the gripping member, so that the pipe embedding device can be easily obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical shaft such as a starting shaft or a reaching shaft when a propulsion pipe such as a fume pipe is buried in the ground, and a shaft for forming manholes for plumbing water and sewage. The present invention relates to a device for burying a pipe (caisson).

[0002]

2. Description of the Related Art Conventionally, when a cylindrical starting or reaching shaft is formed in a propulsion method of burying a propulsion tube such as a fume tube in the ground, the outer periphery of a cylindrical shaft unit is gripped on the lower surface side of a frame. An annular clamp is arranged, the frame and the annular clamp are connected via a pair of revolving hydraulic cylinders attached to the left and right sides of the lower surface of the frame, and furthermore, the upper part of the support member provided on the left and right sides of the frame and the annular clamp are pushed down. A swing press-fitting device for a shaft shaft casing connected via a hydraulic cylinder is used. The thing is,
It is disclosed in Japanese Patent No. 2657774.

[0003] A motor is vertically attached to the arm of the hydraulic excavator so as to swing freely, a drive shaft is connected to the drive shaft of the motor downward, and an end plate detachable at an arbitrary position of the drive shaft. A removable cylindrical cover is provided on the end plate, and the drive shaft is inserted into a shaft of an auger that can be stored in the cover, so that the auger can be attached to an arbitrary position of the drive shaft. Conventionally, there is an excavator for manhole holes in soft ground. This is described in Japanese Patent Publication No. 6-94770.

Further, before excavating a pit in the ground, the surface casing is installed vertically on the surface of the ground while rotating the surface casing with the rotational force of the kelever so as not to hinder the verticality during excavation. To excavate, a kelly bar hanging from the tip of a boom mounted on a ground truck through a rope is twisted together with an excavation bucket by the torque of a kelly drive to excavate a pit in the ground. In this, before the start of this excavation work, after erecting the surface casing made of a tough cylinder with the rotational force of the Keriba vertically under the surface layer under the ground, aiming at the hole center,
Japanese Patent Application Laid-Open No. Hei 7-102557 discloses a structure in which excavation is started from the soil in the bucket by the bucket so that a vertical hole having a high verticality can be excavated deep underground.

[0005] The shaft rotation push-down device described in Japanese Patent No. 2657774 can use a general-purpose track-type power shovel or the like as it is when a casing is pressed into the ground to form a shaft. Although there is no need to prepare extra counterweights, it is necessary to receive a reaction force using a general-purpose tracked excavator. Further, the casing (pipe) may be inclined.

The manhole digging device disclosed in Japanese Patent Publication No. Hei 6-94770 can dig a manhole having substantially the same diameter as the manhole to be installed. Although the cost can be reduced in conjunction with the simplification of the operation, the cost can be reduced. However, since the drilling is basically one-way rotary drilling, the drilling rig considering the resistance and discharge of the soil is complicated and expensive. Also, centering cannot be performed, and the cover may be tilted.

The underground vertical hole drilling device described in Japanese Patent Application Laid-Open No. 7-102557 is a drilling device used for an earth drilling method. The soil is discharged to the ground and the hole walls are protected by using a surface layer casing in the surface layer, and using a stabilizing liquid as necessary for the depth below. After the excavation is completed, a reinforced cage made in a predetermined shape is built in the hole, and concrete is poured by the tremy method. It is a dedicated machine that can perform a series of operations from excavation to concrete placement with one unit, but it is large and expensive. Also,
Since the casing cannot be centered, it may tilt.

[0008]

The conventional swing press-fitting device for a shaft shaft has a problem that it is difficult to work in a narrow place and cannot move easily, and the casing (pipe) may be inclined.

[0009] Further, the conventional manhole digging device for soft ground is complicated and expensive, and centering cannot be performed, and the cover may be inclined.

[0010] Furthermore, the conventional earth drilling machine for excavating an underground shaft is a dedicated machine that can perform a series of operations from excavation to concrete placement with a single unit, but it is large and expensive. In addition, there is a risk of tilting because centering cannot be performed.

[0011] The present invention eliminates the need for a dedicated machine for shaft excavation, allows the work to be performed even in a narrow place as described above, is easy to move, and enables pipe centering to be performed reliably. It is intended to provide an implantation device.

[0012]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a hydraulic shovel having a boom and an arm. A pipe embedding device comprising: a rotation driving means for a member; a pipe with a cutting blade attached to the pipe gripping member; and a center shaft mounted vertically at a rotation center of the pipe gripping member. A circle mechanism for rotating the pipe gripping member with respect to the bracket by a rotation driving means includes an outer circle attached below the bracket, an inner circle attached to the pipe gripping member, and an outer circle and an inner circle. Between the pinion connected to the rotary drive means and the internal teeth of the inner circle. A pipe implantation apparatus is characterized in that so as to freely rotate more the pipe gripping members.

According to the above configuration, a general-purpose hydraulic excavator can be used, and the center shaft is vertically mounted on the rotation center of the pipe gripping member so that the centering of the pipe can be accurately and easily performed when the pipe is embedded. Can be done. Further, by providing the above-mentioned circle mechanism, the rotational driving force is increased, and the excavation press-fitting of the pipe with the blade becomes easy. Further, since the pinion connected to the rotation driving means forms a meshing structure with the inner teeth of the inner circle of the circle mechanism, earth and sand do not enter the circle mechanism from the outside, so there is less trouble.

In order to achieve the above object, the present invention is a pipe burying device provided with a plurality of motors, wherein the rotation driving means is a motor.

According to the above configuration, when a plurality of rotary driving means are arranged directly apart from the center in the circle and directly provided, the transmission balance of the driving force of the rotary driving means is good and the rotary driving force is large. In addition, by rotating the pipe gripping member forward and backward by the rotation driving means, excavation press-fitting with the bladed pipe becomes easy.

In order to achieve the above object, the present invention is a pipe burying device provided with a vibrator on the pipe gripping member.

According to the above configuration, the insertion of the pipe is further facilitated by applying the vibration of the vibrator to the pipe gripping member.

[0018]

Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of a pipe embedding apparatus, and FIG.
Is a plan view of the pipe embedding apparatus, FIG. 3 is an enlarged front view of a main part of the pipe embedding apparatus, FIG. 4 is an explanatory view showing various cutting blades, and FIG. 5 is a perspective view of a universal joint. 6 shows an explanatory view of the pipe embedding method.

FIG. 1 shows a pipe embedding apparatus in which a bracket 3 is attached to an arm 2 of a hydraulic shovel.
The pipe 6 is attached via a pipe gripping member 7 below. The pipe 6 is buried underground to become a caisson,
The material is made of steel or concrete, and the lower end of the first pipe is provided with a cutting edge, that is, an excavating tooth 20a, an outwardly curved saw-shaped incisor 20b, and a sawtooth 20c. By hydraulically controlling the boom 1 of the hydraulic excavator and the up-and-down cylinder of the arm 2, the bracket 3 can be lowered vertically. In addition, if the boom 1 is two upper and lower booms (two-piece booms) that are shaft-supported, it is easy to control the downward movement of the bracket 3 in the vertical direction.

3 and 5, the bracket 3 is attached to the tip of the arm 2 of the excavator by a free joint using two shafts 14.
The bracket 3 hangs down. An outer circle 10 is attached below the bracket 3 with a fastening member 13, an inner circle 11 is provided on the outer circle 10 via a bearing 17, and internal teeth 16 are provided on an inner surface of the inner circle 11. The pinion 12 driven by the motor 4 attached to the bracket 3 meshes with the internal teeth 16, and the inner circle 11 is rotated by the rotation of the motor 4. The motor 4 is mounted on the bracket 3, and includes a pinion 12, internal teeth 16, a bearing 17 and an inner circle 11.
However, since it is inside, there is no intrusion of earth and sand from the outside, and troubles such as missing teeth and pitching do not occur.

The pipe holding member 7 is attached to the inner circle 11.
The plate 8 is attached by a fastening member 13, and further,
The pipe 6 is fixed to the pipe gripping member 7 with a pin or bolt 19.
Attach. The center shaft 9 is attached to the center of rotation of the lower surface of the plate 8 of the pipe gripping member with the pin 18.
Note that a vibrator may be attached to the upper surface of the plate 8.

The method of installing the pipe burying device of the present invention will be described. The tip of the arm 2 of the hydraulic excavator is lowered vertically to position the center shaft 9 at a predetermined position on the ground (a). The pipe gripping member 7, the pipe 6, and the center shaft 9 are rotated, and only the center shaft 9 is buried in the ground, and buried until just before the cutting edge of the pipe 6 contacts the ground (b). Further, the rotary press-fitting of the pipe 6 is continued, and the pipe 6 is rotary-pressed into the underground (c). Next,
The pipe gripping member 7 and the center shaft 9 are pulled up while leaving only the pipe 6 in the ground.

The remaining soil in the pipe 6 is removed by a hydraulic shovel (d), and the connecting pipe 6a is joined to the pipe holding member 7 again, and the connecting pipe 6a is rotationally press-fitted. The removal of the remaining soil in the pipe 6 and the lowering due to the rotational press-fitting of the connecting pipe 6a are repeated, and when the entire connecting pipe 6a is lowered, the pipe gripping member 7 and the center shaft 9
And connect the new connecting pipe to the connecting pipe 6a,
The new connecting pipe is joined to the pipe gripping member 7, and the removal of earth and sand in the pipe and the rotation press-fitting of the pipe are repeated.
Lower the pipe (e) (f). Build a cylindrical shaft or manhole leaving the pipe buried underground.

[0024]

As described above, the present invention is constructed as described above, so that a general-purpose hydraulic excavator can be used. In addition, by vertically mounting a center shaft on the rotation center of the pipe gripping member, the pipe can be buried. Upon entry, the pipe can be centered accurately and easily. Since the pinion connected to the rotary drive means forms a meshing structure with the inner teeth of the inner circle of the circle mechanism, earth and sand do not enter the circle mechanism from the outside, and failures such as tooth loss and pitching do not occur. . Also, by rotating the pipe gripping member forward and reverse by the rotation driving means,
Excavation press-fitting with a bladed pipe becomes easy.

Further, in the present invention, a circle mechanism is provided below the bracket, and when a plurality of motors are provided on the bracket, the pipe gripping member is rotatable with respect to the bracket, and the plurality of motors are mounted in a circle. Evenly spaced from the center and provided directly on the bracket, the transmission balance of the driving force of the turning motor is good, and the rotational driving force is large. Further, by rotating the pipe gripping member forward and backward by the rotation driving means, excavation press-fitting with the bladed pipe becomes easy.

Further, according to the present invention, by providing a vibrator on the pipe gripping member, the pipe can be embedded by the vibration of the vibrator, and the vibration of the vibrator can also be applied to the rotary press fit. The addition further facilitates the insertion of the pipe.

[Brief description of the drawings]

FIG. 1 is a front view of a pipe embedding device of the present invention.

FIG. 2 is a plan view of the pipe embedding device of the present invention.

FIG. 3 is an enlarged front view of a main part of a partially cross-sectional view of the present invention.

FIG. 4 is an explanatory view showing various cutting blades. FIG. 4A shows a cutting tooth, FIG. 4B shows a saw-shaped cutting tooth curved outward, and FIG.

FIG. 5 is a perspective view of a universal joint of the pipe embedding device.

FIG. 6 is an explanatory view of a pipe embedding method.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Boom, 1a ... Lower boom, 2 ... Arm, 3 ... Bracket, 4 ... Motor, 5 ... Circle mechanism, 6 ... Pipe with cutting blade, 7 ... Pipe gripping member, 8 ... Plate, 9 ...
Center shaft, 10 outer circle, 11 inner circle, 12 pinion, 13 fastening member, 14
Shaft, 15: Exciter, 16: Internal teeth, 17: Bearing, 1
8 pin, 19 pin or bolt, 20 cutting edge, 20a
… Drilling tooth

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-177463 (JP, A) JP-B 6-94770 (JP, B2) Jiko 4-15826 (JP, Y2) (58) Field (Int.Cl. ⁷ , DB name) E21B 7/20 E21B 7/00

Claims (3)

(57) [Claims] A bracket is provided at the tip of an arm of a hydraulic excavator having a boom and an arm so as to swing freely, a rotation driving means for a pipe holding member is provided on the bracket, and a pipe with a cutting blade is provided on the pipe holding member. A pipe embedding device, wherein a center shaft is vertically attached to a rotation center of the pipe gripping member, wherein the rotation mechanism rotates the pipe gripping member with respect to the bracket below the bracket. Comprises an outer circle attached below the bracket, an inner circle attached to the pipe gripping member, and a bearing between the outer circle and the inner circle, and a pinion and the inner The pipe gripping member is made rotatable by meshing with the internal teeth of the circle. Pipe embedding equipment. 2. A pipe embedding apparatus according to claim 1, wherein said rotation driving means is a motor, and a plurality of said motors are provided. 3. The pipe embedding apparatus according to claim 1, wherein a vibrator is provided on the pipe gripping member.