JP3184390B2 - Tubing 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 tubing device for pushing and pulling a casing tube used for foundation work such as construction and civil engineering.

[0002]

2. Description of the Related Art Conventionally, a casing tube has been pushed and pushed.
As a tubing device for performing drawing, for example,
As disclosed in Japanese Patent Application Laid-Open No. 3-251520, an insertion hole having a tapered surface is formed in a rotating body rotatably supported on an elevating frame, and a casing tube is inserted into the insertion hole. Then, a wedge is inserted between the tapered surface and the casing tube, the outer periphery of the casing tube is gripped, and the rotating body is rotated to rotate the casing tube. Also, the lifting frame and the base frame are connected by a cylinder,
By moving the lifting frame up and down by driving the cylinder,
Push and pull the casing tube. Furthermore, there has been proposed a configuration in which horizontal jacks are attached to four corners of an outer edge of a base frame, and the height of the horizontal jack can be adjusted so that the elevating frame can be adjusted to be horizontal.

[0003]

In such a conventional apparatus, a hydraulic cylinder is incorporated as a horizontal jack, and the height is adjusted by operating a manual switching valve, or the height is adjusted by rotating a screw. Etc. are used. Then, the worker determines the inclination of the lifting frame using an inclinometer such as a level placed on the lifting frame, and adjusts the height of the horizontal jacks provided at the four corners of the base frame to adjust the inclination of the lifting frame. Was.

However, in order to construct a pile with high accuracy, it is necessary to adjust the inclination of the lifting frame during excavation. In the case of inclination, it was necessary to adjust the height of the horizontal jack so that the lifting frame was horizontal. In addition, since the operator operates other mechanisms such as the rotating mechanism of the casing tube a little away during excavation, when performing level adjustment, the operator must move to the horizontal jack. Did not. Therefore,
There is a problem that the burden on the operator is large, and it is difficult to always check the level, and the adjustment may be delayed.

Accordingly, an object of the present invention is to provide a tubing device which can easily perform horizontal adjustment, with the object of solving the above problems.

[0006]

In order to achieve the above object, the present invention has the following structure as means for solving the problems. That is, as shown in FIG. 1, a lifting mechanism M2 provided with a chuck mechanism M2 for gripping the outer circumference of the casing tube M1 and a rotating mechanism M3 for rotating the chuck mechanism M2 is mounted on the base frame M5 so as to be vertically movable. In a tubing device provided with an elevating mechanism M6 for supporting and elevating the elevating frame M4 by a cylinder to push and pull the casing tube M1, a horizontal jaw attached to the base frame M5 is provided.
Has a jack and drives the horizontal jack according to an input signal
And adjustable leveling mechanism M7 inclination of the lift frame M4, the said lifting and inclination sensor M8 for detecting the tilt angle of the frame M4, wherein based on the inclination angle detected by the inclination sensor M8 leveling mechanism The horizontal jig of M7
This is the configuration of the tubing device comprising: a horizontal control means M9 for controlling the jack to adjust the inclination of the lifting frame M4.

[0007]

In the tubing apparatus having the above construction, the inclination sensor M8 detects the inclination angle of the lifting frame M4, and the horizontal control means M9 controls the horizontal jack of the horizontal adjustment mechanism M7 based on the inclination angle detected by the inclination sensor M8. Control, the horizontal adjustment mechanism M7 is attached to the base frame M5
The horizontal jack is driven according to the input signal to adjust the inclination of the lifting frame M4 horizontally. Also, the chuck mechanism M2
Grips the outer periphery of the casing tube M1 and rotates the rotating mechanism M
3 rotates the chuck mechanism M2, and the lifting mechanism M6 drives the cylinder to raise and lower the lifting frame M4 to push and pull the casing tube M1.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIGS. 3 and 4, reference numeral 1 denotes a casing tube, and a plurality of wedge-shaped chuck members 2 are arranged at equal intervals on the outer periphery of the casing tube 1. Are suspended via a link 6 which is pivotally supported. The rotating ring 4 is rotatably supported by an upper frame 8 via a bearing 10, and the upper frame 8 and the elevating frame 12 are connected by a plurality of chuck cylinders 14.

An insertion hole 16 into which the casing tube 1 can be inserted together with the outer peripheral chuck member 2 is inserted into the lifting frame 12.
Is formed so as to be rotatable via a bearing 20. A tapered surface 24 corresponding to the tapered surface 22 formed on the back surface of the chuck member 2 is formed in the insertion hole 16. In this embodiment, the chuck member 2, the rotating ring 4, the link 6, the upper frame 8, the bearing 10, the chuck cylinder 14, the rotating body 1
8 constitute a chuck mechanism 26.

A gear portion 28 is formed on the outer periphery of the rotating body 18, and the gear portion 28 is rotatably supported via a bearing 32 on a support shaft 30 attached to the elevating frame 12. Are engaged. The idle gear 34 meshes with a small gear 38 attached to a hydraulic motor 36 fixed to the lifting frame 12.

In this embodiment, a plurality of hydraulic motors 36
Are provided, and a small gear 38 and an idle gear 34 are provided respectively.
0, an idle gear 34, a small gear 38, and a hydraulic motor 36 constitute a rotation mechanism 40.

As shown in FIGS. 2 and 3, a first guide cylinder 42 is provided on the lifting frame 12 at the four corners of the lifting frame 12 in parallel with the casing tube 1 and in this embodiment.
The first guide tube 42 is provided with a flange portion 44 which is disposed so as to penetrate the lifting frame 12 and is connected to the lifting frame 1.
2 is fixed to the lower surface by bolts (not shown). First guide cylinder 42 protruding above lifting frame 12
A cylindrical guide member 45 attached to the lower surface of the upper frame 8 is slidably fitted on the outer periphery of the upper frame 8, and the upper frame 8 and the elevating frame 12 are supported so as to be able to move up and down relatively. .

On the inner periphery of each first guide cylinder 42,
The outer circumference of the second guide cylinder 46 is slidably fitted to each of them, and the lower end of the second guide cylinder 46 has a flange 48
Are formed. The head side of the cylinder 50 is fixed to the upper end of each first guide cylinder 42,
The rod 52 of the cylinder 50 is
4. The present invention is also applicable to a case where the inner circumference of the second guide cylinder 46 is slidably fitted on the outer circumference of the first guide cylinder 42.

On the other hand, a mounting seat 58 is formed on the base frame 56 so as to correspond to the second guide cylinder 46. The flange portion 48 of the second guide cylinder 46 is fixed to the mounting seat 58 by a bolt (not shown) or the like, and the second guide cylinder 46 is fixed.
Are erected on the base frame 56. In this embodiment, the first guide cylinder 42, the second guide cylinder 46, and the cylinder 50 constitute an elevating mechanism 60.

Through holes 62, 64, and 66 are formed on the flange portion 48 and the mounting seat 58 coaxially with the cylinder 50. On the rear side of the base frame 56, the through holes 62, 64, and 66 are inserted. The flange portion 70 of the horizontal jack 68 is attached via a pair of connecting members 72. The horizontal jack 68 has a configuration in which the leg member 74 can be protruded in the axial direction by the supplied fluid.

In this embodiment, the horizontal jack 68 is provided as shown in FIG.
As shown in (1), four horizontal jacks 68 are provided at the four corners of the base frame 56, respectively. Each horizontal jack 68a
To 68d, as shown in FIG.
0, and by switching the switching valves 117 to 120, a fluid is supplied to and discharged from a fluid pressure source (not shown) so that the leg member 74 can be protruded or retracted. In this embodiment, the horizontal jacks 68a-68
d, the switching valves 117 to 120 constitute a horizontal adjustment mechanism M7.

An incline sensor 76 is mounted on the elevating frame 12, and the incline sensor 76 is moved forward and backward (X direction in FIG. 3) and left and right direction (Y direction in FIG. 3). And outputs it as an electric signal by detecting the inclination angle of the light. The tilt sensor 76 is connected to the electronic control circuit 100 .

The electronic control circuit 100 includes a well-known CPU 10
2. An input / output circuit configured as a logical operation circuit mainly including the ROM 104, the RAM 106, and the like, and performing input / output with the outside, in which an input circuit 108 and an output circuit 110 are interconnected via a common bus 112.

The CPU 102 inputs the input signals from the tilt sensor 76 via the input circuit 108, and based on these signals, the data in the ROM 104 and the RAM 106, and the control program stored in advance, the CPU 102 controls the output circuit 110. Signals are output to each of the switching valves 117 to 120, the front-rear direction display meter 122, and the left-right direction display meter 124 via the switching valves 117 to 120.

Next, the automatic horizontal control processing performed by the electronic control circuit 100 together with the operation of the tubing apparatus of the present embodiment will be described with reference to the flowchart of FIG. First, when the tubing device is installed at the excavation position, an automatic level control process is executed to adjust the level of the elevating frame 12, and a detection signal from the tilt sensor 76 is input via the input circuit 108, The inclination angle in the front-back direction (X direction) is measured (Step S10)
0). Next, it is determined whether or not the measured inclination angle is equal to or larger than a specified value (step S110).

When the inclination angle is equal to or greater than a predetermined value, the output circuit 11 is controlled so that the inclination angle in the front-rear direction is equal to or less than a specified value.
An excitation signal is output to each of the switching valves 117 to 120 through 0 to control the inclination angle of the elevating frame 12 to be equal to or less than a specified value by supplying and discharging fluid to and from the horizontal jacks 68a to 68d. For example, if the front side is low and the rear side is high,
The switching valves 117 and 120 are switched in the direction in which the leg members 74 of the front two horizontal jacks 68a and 68d protrude, and the leg members 7 of the rear two horizontal jacks 68b and 68c.
The switching valves 118 and 119 are switched in the direction in which the valve 4 is retracted.

This allows the front side to be adjusted higher and
The rear side is adjusted to be low, and the supply and discharge of fluid to and from the horizontal jacks 68a to 68d are performed until the inclination of the elevating frame 12 becomes equal to or less than a specified value.
7 to 120 are switched, and the supply and discharge of fluid to and from the horizontal jacks 68a to 68d are stopped (step S120).

When the adjustment in the front-rear direction is completed, or
If it is determined in step S110 that the angle is equal to or smaller than the designated value, the inclination angle in the left-right direction (Y direction) is measured based on the signal from the inclination sensor 76 (step S1).
30). Subsequently, it is determined whether or not the inclination angle is equal to or larger than a specified value (step S140).

When it is equal to or greater than the specified value, an excitation signal is output to each of the switching valves 117 to 120 via the output circuit 110 so that the inclination angle in the left-right direction is equal to or smaller than the specified value. By controlling the supply and discharge of the fluid, the inclination angle of the lifting frame 12 is controlled to be equal to or less than a specified value.
For example, when the right side is low and the left side is high, the switching valves 117 and 118 are switched in a direction in which the leg members 74 of the two right side horizontal jacks 68a and 68b protrude, and the leg members of the two left side horizontal jacks 68c and 68d. The switching valves 119 and 120 are switched in the direction in which the valve 74 is retracted.

Thus, the right side is adjusted to be higher,
The left side is adjusted to be lower, and the fluid is supplied to and discharged from the horizontal jacks 68a to 68d until the inclination of the lifting frame 12 becomes less than the specified value.
7 to 120 are switched, and the supply and discharge of the fluid to and from the horizontal jacks 68a to 68d are stopped (step S150).

When the level of the lifting frame 12 is adjusted before the excavation, the casing tube 1 is inserted and the chuck cylinder 14 is driven. Thereby, the guide member 45 slides along the first guide cylinder 42, the upper frame 8 is pulled down, and the bearings 10,
The chuck member 2 is connected to the outer periphery of the casing tube 1 and the tapered surface 24 of the rotating body 18 via the rotating ring 4 and the link 6.
Inserted between The tapered surface 22 of the chuck member 2 slides along the tapered surface 24, and the plurality of chuck members 2
Grips the outer periphery of the casing tube 1.

Next, the hydraulic motor 36 is driven to rotate,
The rotating body 18 is rotated via the small gear 38, the idle gear 34, and the gear portion 28, and the chuck mechanism 2 is rotated together with the rotating body 18.
The casing tube 1 gripped by 6 is rotated. Further, the cylinder 50 is driven to the contraction side, and the first guide cylinder 42 slides on the outer periphery of the second guide cylinder 46, and
The elevating frame 12 is lowered together with the guide cylinder 42. Thus, the casing tube 1 is pushed into the ground while rotating, and excavation is performed by a not-shown excavation bit at the tip of the casing tube 1.

When the full stroke of the cylinder 50 is driven, the rotation of the hydraulic motor 36 is stopped once, the chuck cylinder 14 is driven, and the chuck member 14 is driven via the upper frame 8, the bearing 10, the rotating ring 4 and the link 6. 2
Is lifted, and the grip of the casing tube 1 is released.

Then, the cylinder 50 is driven to the extension side, and the first guide cylinder 42 slides on the outer periphery of the second guide cylinder 46 to raise the lifting frame 12. Then, the above-described operation is repeated, and while the outer periphery of the casing tube 1 is held by the chuck mechanism 26 and the rotating body 18 is rotated, the elevating frame 12 is lowered and the casing tube 1 is pushed in. Repeat this operation repeatedly
Excavation by the casing tube 1 is performed. In addition, the casing tube 1 can be excavated more deeply by adding.

The excavation is performed in this manner. During the excavation, the automatic horizontal control process is repeatedly executed, and the inclination angle in the front-rear direction detected by the inclination sensor 76 is equal to or larger than the specified value, as described above. (Step S100,
(S110), an excitation signal is output to the switching valves 117 to 120, the fluid is supplied to and discharged from the horizontal jacks 68a to 68d, the height is adjusted, and the elevation frame 12 is adjusted to be horizontal in the front-rear direction (S110). Step S120).

Similarly, in the left-right direction, when the inclination angle in the left-right direction detected by the inclination sensor 76 is equal to or larger than a specified value (steps S130, S140), the switching valve 1 is set.
Excitation signals are output to the horizontal jacks 17 to 120.
The height is adjusted by supplying and discharging the fluid in steps 8a to 68d, and the elevation frame 12 is adjusted to be horizontal in the horizontal direction (step S150).

Further, the inclination angle detected by the inclination sensor 76 is transmitted to the front-rear display meter 12 via the output circuit 110.
2 and the left and right direction display meter 124, and the inclination angle at that time is sequentially displayed. As described above, even during excavation, the elevating frame 12 is automatically adjusted to be horizontal, so that the operator monitors the inclination angle of the elevating frame 12 during excavation and operates the horizontal jacks 68a to 68d. The lifting frame 12 is adjusted horizontally so that the burden on the worker is reduced and the inclination angle automatically becomes equal to or smaller than the specified value when the inclination angle is equal to or larger than the specified value. Delays in adjustment can be avoided.

When the excavation is completed, the cylinder 50 is driven to the extension side while the outer periphery of the casing tube 1 is gripped by the chuck mechanism 26, and the lifting frame 1 is moved.
Raise 2. Thereby, when the casing tube 1 is pulled out from the ground and the full stroke of the cylinder 50 is driven, the gripping by the chuck mechanism 26 is released, and the cylinder 50 is driven to the contraction side to move the lifting frame 12
Is lowered.

Then, the outer periphery of the casing tube 1 is gripped again by the chuck mechanism 26, the lifting frame 12 is raised by the cylinder 50, and the casing tube 1 is pulled out. By repeating this operation, the casing tube 1 is pulled out from the ground.

In this embodiment, the execution of the automatic horizontal control process functions as the horizontal control means M9. As described above, the present invention is not limited to such embodiments at all, and can be implemented in various modes without departing from the gist of the present invention.

[0036]

As described in detail above, the tubing device of the present invention is automatically adjusted so that the elevating frame is horizontal even during excavation. It is not necessary to monitor and adjust the horizontal, so that the burden on the operator is reduced, and when the inclination angle exceeds the specified value, the lifting frame is automatically adjusted to be below the specified value. In addition, it is possible to avoid delaying the horizontal adjustment of the lifting frame.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a basic configuration of a tubing device of the present invention.

FIG. 2 is an enlarged sectional view of an elevating mechanism and a horizontal jack of the tubing device as one embodiment of the present invention.

FIG. 3 is a schematic perspective view of the tubing device of the present embodiment.

FIG. 4 is an enlarged sectional view of a chuck mechanism and a rotation mechanism according to the embodiment.

FIG. 5 is a block diagram illustrating a configuration of an electric system according to the present embodiment.

FIG. 6 is a flowchart illustrating an example of an automatic horizontal control process performed in the electronic control circuit according to the embodiment.

FIG. 7 is an arrangement diagram showing an arrangement of a horizontal jack according to the embodiment.

[Explanation of symbols]

M1,1… Casing tube M2,26…
Chuck mechanism M3, 40 ... Rotation mechanism M4, 12 ...
Elevating frame M5, 56 ... Base frame M6, 60 ...
Elevating mechanism M7: Horizontal adjustment mechanism M8, 76 ...
Tilt sensor M9 Horizontal control means 14 Chuck cylinder 18 Rotating body 50 Cylinder 100 Electronic control circuit

Continuation of front page (56) References JP-A-63-251520 (JP, A) JP-A-6-57746 (JP, A) JP-A-5-331185 (JP, A) JP-A-3-36084 (JP, A) JP-A-2-13687 (JP, A) JP-A-6-257364 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E02D 11/00 E02D ^7/ 20- 7/22 E02D 13/06 E21B 7/20

Claims (1)

(57) [Claims] An elevating frame having a chuck mechanism for gripping an outer periphery of a casing tube, wherein the elevating frame on which a rotating mechanism for rotating the chuck mechanism is mounted is vertically movably supported on a base frame, and the elevating frame is mounted on a cylinder. A tubing device provided with a lifting mechanism for lifting and lowering the casing tube by pushing and pulling the casing tube, wherein a horizontal jack attached to the base frame is provided.
A horizontal adjustment mechanism that drives the horizontal jack according to an input signal to adjust the inclination of the elevating frame, an inclination sensor that detects an inclination angle of the elevating frame, and an inclination angle that is detected by the inclination sensor. A tubing device, comprising: a horizontal control unit that controls the horizontal jack of the horizontal adjustment mechanism to adjust the inclination of the elevating frame based on the following.