JPH07252831A - Tubing device - Google Patents

Abstract

PURPOSE:To provide a tubing device capable of being easily disassembled so that it can be moved by a small crane. CONSTITUTION:A lift frame 12 mounted with a rotating mechanism rotating a chuck mechanism 26 holding the outer periphery of a casing tube 1 is lifted or lowered by a lift mechanism 90. The lift mechanism 90 is provided with multiple pairs of the first and second guide tubes 42, 46 provided on the same axis, the second guide tube 46 is slidably inserted into the first guide tube 42, a cylinder 50 is stored in the second guide tube 46, one end of the cylinder 50 is connected to the first guide tube 42, and the other end is connected to the second guide tube 46. A flange section 48 is formed on the second guide tube 46, a coupling hole 60 insertable with the flange section 48 is formed on the fitting seat 58 of a base frame 56, and the flange section 48 inserted into the coupling hole 60 can be fixed or opened by the movement of a fixing lever 76.

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, pushing a casing tube
As a tubing device for pulling out, for example, Japanese Patent Laid-Open No.
As described in JP-A-3-251520, an insertion hole having a tapered surface is formed in a rotating body rotatably supported by 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 to grip the outer periphery of the casing tube and rotate the rotating body to rotate the casing tube. Further, the first guide cylinder is fixed to the lifting frame, and the second guide cylinder slidably inserted in the first guide cylinder is fixed to the base frame. There has been proposed a structure in which an elevating frame and a base frame are connected by a cylinder, and the elevating frame is moved up and down by driving the cylinder so that the casing tube can be pushed in and pulled out.

[0003]

However, in such a conventional device, the tubing device is lifted by a crane when the tubing device is moved on the work site. This crane is used for excavating earth and sand in the casing tube, but in a large tubing device that pushes and pulls out a large diameter casing tube, its own weight is heavy and it is used for earth and sand excavation. However, the lifting capacity of these cranes was insufficient, and a separate large-sized crane was required for moving.

Further, in order to disassemble the tubing device so that it can be lifted up even by a small crane, many bolts connecting the elevating frame and the first guide cylinder are loosened, or the base frame and the second guide cylinder are connected together. It is necessary to loosen a large number of bolts for connecting the first guide cylinder and the second guide cylinder. In addition, the cylinder and the elevating frame or the cylinder and the base frame must be disconnected from each other, which makes it difficult to disassemble.

Therefore, an object of the present invention is to provide a tubing device which can be easily disassembled so that even a small crane can be moved.

[0006]

In order to achieve such an object, the present invention has the following constitution as means for solving the problem. That is, an elevating frame equipped with a chuck mechanism for gripping the outer circumference of a casing tube and having a rotating mechanism for rotating the chuck mechanism is movably supported on a base frame, and the elevating frame is moved up and down by a cylinder. In a tubing apparatus having an elevating mechanism for pushing and pulling out a casing tube, the elevating mechanism includes a plurality of sets of first and second guide cylinders provided in parallel and coaxially with the casing tube,
The elevating frame in which one of the first and second guide tubes is slidably inserted into the other, the cylinder is housed in the guide tube, and one end of the cylinder is fixed to the first guide tube. The other end is connected to the second guide cylinder, a flange portion is formed on the second guide cylinder, and a fitting hole into which the flange portion can be inserted is formed on the base frame side. The configuration of a tubing device is characterized in that it is provided with a connection mechanism capable of fixing and opening the flange portion inserted in the dowel hole by moving a fixing lever.

Further, a lifting mechanism having a chucking mechanism for holding the outer periphery of the casing tube, a lifting frame on which a rotating mechanism for rotating the chucking mechanism is mounted, is supported in a vertically movable manner on a base frame, and the lifting frame is a cylinder. In a tubing device equipped with a lifting mechanism that pushes and pulls out the casing tube by raising and lowering by
The elevating mechanism includes a plurality of sets of first and second guide cylinders provided coaxially and in parallel with the casing tube, and one of the first and second guide cylinders is slidably inserted into the other. In addition, the cylinder is housed in the guide cylinder, one end of the cylinder is connected to the first guide cylinder, and the other end is connected to the base frame side to which the second guide cylinder is fixed, and A flange portion is formed on the guide cylinder, and a fitting hole into which the flange portion can be inserted is formed on the lifting frame side, and the flange portion inserted into the fitting hole can be fixed / opened by moving a fixing lever. This is the configuration of a tubing device characterized by having various connecting mechanisms.

Further, the connecting mechanism includes a plurality of engaging members having a small diameter shaft portion provided upright around the fitting hole and a large diameter head portion connected to the small diameter shaft portion, and the fixing lever is provided on the fixing lever. A plurality of engagement holes formed by arranging a large-diameter hole through which the large-diameter head can pass and a small-diameter hole through which only the small-diameter shaft portion can pass are formed in accordance with the engaging member, and the large-diameter hole is formed. The large-diameter head may be inserted, the fixing lever may be moved to overlap the large-diameter head with the small-diameter hole, and the large-sized head may be fixed by overlapping the fixing lever and the flange portion.

[0009]

In the tubing apparatus having the above structure, the connection mechanism opens the flange portion by the movement of the fixing lever and pulls out the flange portion from the fitting hole, thereby connecting the second guide cylinder and the base frame or the first guide cylinder. And the lifting frame are disconnected, the base frame and the lifting frame are separated, and each is moved by a crane or the like. On the other hand, the flange portion is inserted into the fitting hole, and the connecting mechanism fixes the flange portion by the movement of the fixing lever to connect the second guide cylinder and the base frame or connect the first guide cylinder and the elevating frame. Then, the chuck mechanism grips the outer periphery of the casing tube, the rotating mechanism rotates the chuck mechanism to rotate the casing tube, the cylinder is driven, and the first guide cylinder and the second guide cylinder relatively slide. Then, the elevating frame is moved up and down to push and pull the casing tube.

Further, in the connection mechanism having the engaging member and the engaging hole in the fixing lever, the fixing lever is moved to bring the large-diameter head and the large-diameter hole into alignment, so that the large-diameter head is large. The flange portion is pulled out from the fitting hole while the flange portion is pulled open from the fitting hole. Further, the large-diameter head is inserted into the large-diameter hole, the fixing lever is moved, the large-diameter head is superposed on the small-diameter hole, the fixing lever and the flange portion are overlapped, and the guide cylinder is fixed.

[0011]

Embodiments of the present invention will now be described in detail with reference to the drawings. As shown in FIGS. 2 and 3, 1 is 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. Pivoted link 6
Is hung through. The rotating ring 4 is rotatably supported by the 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 into the elevating frame 12 together with the chuck member 2 on the outer periphery.
A rotating body 18 in which is formed is rotatably supported via a bearing 20. A taper surface 24 corresponding to the taper 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 rotary ring 4, the link 6, the upper frame 8, the bearing 10, the chuck cylinder 14, and the rotary body 1 are used.
8 constitutes a chuck mechanism 26.

A gear portion 28 is formed on the outer periphery of the rotating body 18, and an idle gear 34 rotatably supported by a support shaft 30 attached to the elevating frame 12 via a bearing 32 is formed on the gear portion 28. Are meshed. A small gear 38 attached to a hydraulic motor 36 fixed to the lifting frame 12 is meshed with the idle gear 34. In this embodiment, a plurality of hydraulic motors 36 are provided, and a small gear 38 and an idle gear 34 are provided for each of them, and the rotor 18, the bearing 20, the idle gear 34, the small gear 38, and the hydraulic motor are provided. The rotation mechanism 40 is composed of 36.

Further, as shown in FIGS. 1 and 2, four first guide cylinders 42 are arranged in parallel with the casing tube 1 at four corners of the elevating frame 12 so as to penetrate the elevating frame 12. A flange portion 44 formed on the first guide cylinder 42 is fixed to the lower surface of the elevating frame 12 by a bolt (not shown). A tubular guide member 45 attached to the lower surface of the upper frame 8 is slidably fitted to the outer periphery of the first guide cylinder 42 protruding above the lifting frame 12, and the upper frame 8 and the lifting frame 12 is supported so as to be vertically movable relative to each other.

The outer circumference of the second guide cylinder 46 is slidably fitted in the inner circumference of the first guide cylinder 42, and a flange portion 48 is formed in the second guide cylinder 46. In addition, the cylinder 50 is provided at the upper end of the first guide cylinder 42.
Is fixed to the head side of the second guide cylinder 46,
The rod 52 of the cylinder 50 is connected via a pin 54. It is also possible to slidably fit the inner circumference of the second guide cylinder 46 to the outer circumference of the first guide cylinder 42.

On the other hand, the base frame 56 is formed with mounting seats 58 at four locations corresponding to the second guide cylinder 46, and in this mounting seat 58, the second guide cylinder 46 is provided in this embodiment. A fitting hole 60 into which the flange portion 48 can be inserted is formed. Further, as shown in FIGS. 4 to 6, the fitting hole 6
A plurality of through holes 62 (eight in this embodiment) are formed at equal intervals around 0 and on a circle centered on the fitting hole 60.

A plurality of engaging members 66 having a small-diameter shaft portion 63 provided upright on the mounting seat 58 and a large-diameter head portion 64 connected to the small-diameter shaft portion 63 are passed through each through hole 62. The bolt 68 is inserted, the washer 70 is inserted into the bolt 68, and the nut 72 is screwed into the bolt 68, so that the engaging member 66 is fixed to the mounting seat 58. Although the engaging member 66 is fixed by the bolt 68 in this embodiment, the bolt 68 may be the engaging member itself and the head of the bolt 68 may be used instead of the large diameter head 64. It is possible.

Further, the insertion hole 7 of the fixed lever 76 in which the insertion hole 74 having a diameter smaller than the outer diameter of the flange portion 48 is formed.
The second guide cylinder 46 is inserted in the position 4. Fixed lever 7
6 have the same number of large-diameter holes 78 on the same circle as the through-holes 62 and at the same intervals, and the large-diameter heads 64 can pass therethrough. Similarly, small-diameter shafts are formed on the same circumference. The same number of small-diameter holes 80 through which only the portion 63 can pass and the large-diameter head 64 cannot pass are formed, and the large-diameter holes 78 and the small-diameter holes 80 are connected to each other to form an engagement hole 82.

Further, when the small diameter hole 80 and the large diameter head 64 are superposed on the fixed lever 76 and the mounting seat 58,
Overlapping fixing holes 84 and 86 are formed respectively, and fixing pins 88 are fitted into the fixing holes 84 and 86. Moreover, at this time, the fixing lever 76 and the flange portion 48 are overlapped with each other, and the second guide cylinder 46 is fixed to the base frame 56 so that the flange portion 48 does not come out of the fitting hole 60 and does not move. Is configured to be able to.

In this embodiment, the first guide cylinder 42, the second guide cylinder 46, and the cylinder 50 constitute an elevating mechanism 90, and the flange portion 48, the mounting seat 58, the engaging member 66, the bolt 68, The washer 70, the nut 72, and the fixed lever 76 constitute a connection mechanism 92.

The second guide tube 4 is attached to the base frame 56.
Four horizontal jacks 94 (only a part of which are shown) are coaxially mounted on the shaft 6, and the base frame 56 can be supported horizontally. Next, the operation of the above-described tubing apparatus of this embodiment will be described.

First, the casing tube 1 is inserted,
The chuck cylinder 14 is driven. This makes the first
The guide member 45 slides along the guide tube 42, the upper frame 8 is pulled down, and the chuck member 2 passes through the bearing 10, the rotary ring 4, and the link 6 and the outer circumference of the casing tube 1 and the taper surface of the rotary body 18. It is inserted between 24 and. The tapered surface 22 of the chuck member 2 is the tapered surface 2
The plurality of chuck members 2 grip the outer circumference of the casing tube 1 by sliding along 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 together with the rotating body 18 is rotated.
The casing tube 1 gripped by 6 is rotated. Further, the cylinder 50 is driven toward the contraction side, the first guide cylinder 42 slides on the outer periphery of the second guide cylinder 46, and the first guide cylinder 42 slides.
The elevating frame 12 is lowered together with the guide cylinder 42. As a result, the casing tube 1 is pushed into the ground while rotating, and excavation is performed by an unillustrated excavation bit at the tip of the casing tube 1.

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

Then, the cylinder 50 is driven toward the extension side, and the first guide cylinder 42 slides on the outer periphery of the second guide cylinder 46 to raise the elevating frame 12. Then, the above-described operation is repeated, the outer periphery of the casing tube 1 is gripped by the chuck mechanism 26, the rotating frame 18 is rotated, and the elevating frame 12 is lowered to push the casing tube 1 in. Repeat this operation,
Excavation with the casing tube 1 is performed. Moreover, the casing tube 1 can be excavated deeper by adding more.

After the excavation is completed, the chuck mechanism 26 holds the outer periphery of the casing tube 1 and drives the cylinder 50 to the extension side to move the lifting frame 1 up and down.
Raise 2. As a result, when the casing tube 1 is pulled out from the ground and the entire stroke of the cylinder 50 is driven, the gripping by the chuck mechanism 26 is released, and the cylinder 50 is driven to the contracted side to move up and down the frame 12.
To lower.

Then, again, the outer periphery of the casing tube 1 is gripped by the chuck mechanism 26, the elevating 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.

When the digging is completed in this way, the tubing device is moved. In that case, the pin 88 is fixed to the fixing hole 8.
As shown in FIG. 5, the large-diameter head portion 64 and the large-diameter hole 78 are opened together by pulling out from 4, 86 and rotating the fixing lever 76. As a result, when the lifting frame 12 is hoisted by a crane (not shown), the first guide cylinder 42, the cylinder 50, and the second guide cylinder 46 are lifted together with the lifting frame 12, and the flange portion 48 is pulled out from the fitting hole 60. Be pulled out.

Further, the fixing lever 7 together with the flange portion 48
6 is lifted, the large diameter head 64 passes through the large diameter hole 78, and the second guide cylinder 46 is separated from the base frame 56. In this way, the base frame 56, the lifting mechanism 90, and the rotation mechanism can be operated by a simple operation of rotating the fixed lever 76 without disconnecting the cylinder 50 from the first guide cylinder 42 or the second guide cylinder 46. 40 and the lifting frame 12 in which the chuck mechanism 26 is arranged are separated, and by separating them, the weight of each individual becomes lighter, and each can be lifted even by a small crane having a small lifting capacity. .

After the movement, first, the base frame 56 is installed at the excavation site, the flange portion 48 of the second guide cylinder 46 is inserted into the fitting hole 60, and the large diameter hole 78 and the large diameter head are formed. 64 together with the large-diameter hole 78, the large-diameter head 64
Insert. Then, by rotating the fixed lever 76,
As shown in FIG. 6, when the large diameter head 64 is overlapped with the small diameter hole 80 and the pin 88 is inserted into the fixing holes 84 and 86, the fixing lever 76 is caught by the large diameter head 64, and the fixing lever 76 and the flange. Due to the overlap with the portion 48, the flange portion 48 is prevented from coming off, and the second guide cylinder 46 is attached to the mounting seat 58.
Fixed to. In this way, the flange portion 4 is inserted into the fitting hole 60.
It can be easily assembled by inserting 8 and rotating the fixed lever 76 by a simple operation.

In this embodiment, the guide member 45 is slidably fitted to the first guide cylinder 42 protruding from the elevating frame 12, but the present invention is not limited to this, and as shown in FIG.
The guide member 45 may be slidably fitted to the guide tube 96 separately provided on the elevating frame 12. Also, the cylinder 5
The present invention is not limited to the case where the head side of 0 is connected to the upper end of the first guide cylinder 42, but the head side of the cylinder 50 can be connected to the elevating frame 12 to which the first guide cylinder is fixed.

Further, the second guide cylinder 46 and the base frame 56 can be fixed and opened by the fixing lever 76. However, as in the second embodiment shown in FIG. 8, the second guide cylinder 46 is fixed to the base frame 56. Fixed to the first guide tube 42
It is also possible to implement the flange portion 44 and the elevating frame 12 by inserting the flange portion 44 into the fitting hole 98 formed in the elevating frame 12 and fixing and opening by the fixing lever 76. Further, one end of the cylinder 50 is on the side of the base frame 56 to which the second guide cylinder 46 is fixed,
The other end is connected to the first guide cylinder 42. In this case, the base frame 56 in which the first and second guide cylinders 42 and 46 and the cylinder 50 are arranged is separated from the elevating frame 12 in which the rotating mechanism 40 and the chuck mechanism 26 are arranged.

The present invention is not limited to the embodiments as described above, and can be carried out in various modes without departing from the scope of the present invention.

[0034]

As described in detail above, the tubing apparatus of the present invention has the effect that it can be disassembled by a simple operation of moving the fixing lever so that it can be lifted up even by a small crane. Also, the connection mechanism
With the one including the engaging member and the fixing lever having the engaging hole, the flange portion can be fixed to the fitting hole with a simple structure.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of a lifting mechanism of a tubing apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view of a tubing apparatus of this embodiment.

FIG. 3 is an enlarged cross-sectional view of a chuck mechanism and a rotation mechanism of this embodiment.

FIG. 4 is an enlarged cross-sectional view of a main part of the connection mechanism of this embodiment.

FIG. 5 is an explanatory diagram of a state in which a large-diameter head and a large-diameter hole of the present embodiment are combined.

FIG. 6 is an explanatory diagram of a state in which a large diameter head portion and a small diameter hole of the present embodiment are combined.

FIG. 7 is a schematic configuration diagram of a lifting mechanism as another embodiment.

FIG. 8 is a schematic configuration diagram of an elevating mechanism as a second embodiment.

[Explanation of symbols]

1 ... Casing tube 2 ... Chuck member
8 ... Upper frame 12 ... Lifting frame 14 ... Chuck cylinder
18 ... Rotating body 26 ... Chuck mechanism 40 ... Rotating mechanism
42 ... 1st guide cylinder 44 ... flange part 46 ... 2nd guide cylinder
48 ... Flange section 50 ... Cylinder 56 ... Base frame
60, 98 ... Fitting hole 63 ... Small diameter shaft portion 64 ... Large diameter head
66 ... Engaging member 76 ... Fixed lever 78 ... Large diameter hole
80 ... Small-diameter hole 82 ... Engagement hole 90 ... Lifting mechanism
92 ... Connection mechanism

Claims (3)

[Claims] 1. A lifting / lowering frame having a chuck mechanism for gripping an outer periphery of a casing tube and having a rotating mechanism for rotating the chuck mechanism mounted thereon is vertically movably supported by a base frame, and the lifting / lowering frame is a cylinder. In a tubing device including an elevating mechanism that pushes and pulls out a casing tube by raising and lowering the casing tube, the elevating mechanism includes a plurality of sets of first and second guide cylinders provided in parallel and coaxially with the casing tube. The first and second guide cylinders are slidably inserted into the other, the cylinder is housed in the guide cylinder, and one end of the cylinder is fixed to the first guide cylinder. The other end of the lifting frame is connected to the second guide cylinder, and a flange portion is formed on the second guide cylinder. A fitting hole into which the flange portion can be inserted is formed on the side of the chamber, and the flange portion inserted into the fitting hole is provided with a connection mechanism that can be fixed / opened by moving a fixing lever. Tubing device. 2. A lifting / lowering frame having a chuck mechanism for gripping an outer periphery of a casing tube, on which a rotating mechanism for rotating the chuck mechanism is mounted, is vertically movably supported on a base frame, and the lifting / lowering frame is a cylinder. In a tubing apparatus having an elevating mechanism for pushing and pulling out a casing tube by elevating and lowering the casing tube, the elevating mechanism is provided with a plurality of sets of first and second guide tubes provided in parallel and coaxially with the casing tube. The first and second guide cylinders are slidably inserted into the other, the cylinder is housed in the guide cylinder, and one end of the cylinder is connected to the first guide cylinder and the other end is connected to the other end. A second guide cylinder is connected to the fixed base frame side, a flange portion is formed on the first guide cylinder, and the lifting guide is connected. A tubing characterized in that a fitting hole into which the flange portion can be inserted is formed on the lame side, and the flange portion inserted into the fitting hole is provided with a connection mechanism that can be fixed and opened by moving a fixing lever. apparatus. 3. The fixing mechanism comprises: a plurality of engaging members having a small diameter shaft portion provided upright around the fitting hole and a large diameter head portion connected to the small diameter shaft portion; A plurality of engaging holes formed by arranging a large-diameter hole through which the large-diameter head can pass and a small-diameter hole through which only the small-diameter shaft portion can pass are formed in accordance with the engaging member, The large-diameter head is inserted, the fixing lever is moved to overlap the large-diameter head with the small-diameter hole, and the fixing lever and the flange portion can be fixed to each other by stacking. Alternatively, the tubing device according to claim 2.