JP2999724B2 - Workbench elevating device for pile construction machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to auxiliary work for pile construction and maintenance and maintenance of construction mechanisms such as an auger drive mechanism and a hammer mechanism.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work table elevating device for a pile construction machine that moves up and down a work table used for inspection work and the like.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Utility Model Publication No. 57-26926, a worktable is mounted on a guide shaft having a hexagonal cross section provided along a reader so as to be able to move up and down, and the worktable is suspended by a winch. A device provided with a mechanism for rotating a guide shaft is known.

Further, as disclosed in Japanese Patent Application Laid-Open No. Hei 5-331855, a work table is supported so as to be able to move up and down along a guide frame provided on a reader, and a wire having one end fastened to the work table is wound around a sheave. Later, it is wound on a drum on the car body,
When raising and lowering the platform and tilting the reader,
2. Description of the Related Art There is known a configuration in which a floor surface of a worktable can be inclined.

[0004]

However, in such a conventional apparatus, the work table is arranged along the side of the construction mechanism, and work can be easily performed from the side of the construction mechanism. There was a problem that it was difficult to work around. For example, when the construction mechanism is an auger drive mechanism having a plurality of axes, in the connection work of connecting a tool to each output shaft of the auger drive mechanism, a part of the output shaft and the tool are viewed from the side of the construction mechanism. Can be connected, but the connection between the output shaft on the opposite side and the tool is very difficult.

It is an object of the present invention to provide an improved work table lifting and lowering device for a pile construction machine so that work can be performed even on the front side of a construction mechanism.

[0006]

In order to achieve the object, the present invention takes the following means to solve the problem. That is, in a pile construction machine that raises and lowers a construction mechanism along a first guide rail provided on a standing leader, the pile construction machine moves along a second guide rail provided on the leader in parallel with the first guide rail. Provide a worktable having a movable table supported so as to be able to move, a boarding table pivotally supported by the movable table, and an extension table supported by the boarding table and extending to the front side of the construction mechanism, and A work table elevating device for a pile working machine is provided with a drive mechanism for moving the work table up and down.

[0007] The extension base may be formed substantially at right angles to and integrally with the boarding base.
The extension table may be supported by the boarding table so as to be pivotable. Further, the extension table may be supported by the boarding stand so as to be able to stand up, or the extension table may be
It may be slidably supported by the boarding platform.
The construction mechanism may be an auger drive mechanism having a plurality of axes.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 1, reference numeral 1 denotes a body of a self-propelled pile construction machine using a crawler. It is supported so that it can be turned.

The reader 2 is provided with two first guide rails 8 and 10 having a long section with a circular cross section along its longitudinal direction (see FIGS. 3 and 4). 1
At 0, an auger drive mechanism 12 as a construction mechanism is slidably engaged along the first guide rails 8, 10 via a plurality of guide gibs 14.

The auger drive mechanism 12 has a plurality of output shafts. In this embodiment, as shown in FIG. 2, three output shafts 22a, 22a are driven by a single drive motor via a speed reducer 20.
2b and 22c are rotationally driven. Each output shaft 22a, 22b, 22c has a hexagonal hole 26
a, 26b, 26c are formed, and through holes 34a, 36a, 34b, 3
6b, 34c and 36c are drilled.

The three excavators 24a, 24b, 24c are:
At the same interval as the three output shafts 22a, 22b, and 22c, they are rotatably supported by the connecting member 44. Each excavator 24
a, 24b, and 24c respectively have hexagonal shaft portions 28
a, 28b, 28c are formed, and the grooves 30a, 32a, 30b, 32b, 30c, 32c are orthogonal to the axial direction.
Are formed.

Each of the output shafts 22a, 22b, and 22c and each of the digging tools 24a, 24b, and 24c are formed with hexagonal holes 26a, 26c.
After inserting the hexagonal shaft portions 28a, 28b, 28c into the b, 26c, the through holes 34a, 36a, 34b, 36b, 34
c, 36c and grooves 30a, 32a, 30b, 32b, 3
It is configured such that pins (not shown) are inserted into and connected to 0c and 32c.

The auger drive mechanism 12 includes a hanging sheave 37.
Is rotatably supported, one end of the wire 40 is fixed to the upper end of the reader 2, is wound around the hanging sheave 37, and is further rotatably supported by the upper end of the reader 2. After being wound around the wire 40
Is wound around a rotating drum of a main winch (not shown) provided on the pile construction machine main body 1 and is configured to be able to raise and lower the auger drive mechanism 12 by driving the main winch.

The reader 2 has second guide rails 38, 3 having a circular cross section parallel to the first guide rails 8, 10.
9 is laid, and a movable table 42 is connected to the second guide rails 38 and 39 via a plurality of guide gibs 41.
It is slidably engaged along guide rails 38 and 39.

One end of a wire 48 is fastened to the movable table 42, and the wire 48 is hung over a pair of sheaves 52, 54 rotatably supported on the upper end of the reader 2, and is connected to the reader 2. Is wound around a drum 57 of a worktable winch 56 as a drive mechanism attached to a lower side surface of the work table. The drive mechanism is not limited to the worktable winch 56, but a rack is laid on the reader 2 along the second guide rails 38 and 39, and a pinion gear attached to a rotating shaft of a motor provided on the movable table 42 is mounted on the rack 2. And a mechanism for moving the movable table 42 up and down by rotating the motor.

A board 58 is supported by the movable table 42 so as to be pivotable about a support shaft 60 parallel to the second guide rails 38 and 39. The boarding platform 58 includes a flat boarding floor 61 on which an operator can board, and the boarding floor 61.
Is provided with a fence member 62 that surrounds the surrounding area.

The boarding platform 58 is provided with an extension platform 64 at a substantially right angle.
The extension base 64 is formed integrally and has an extension floor 66 on which an operator can board, and also has a fence member 68 surrounding the periphery of the extension floor 66. Boarding floor 61
The extension floor 66 is formed so as to be continuous on the same plane, and is formed in a substantially “L” shape. In addition, the moving table 4
2. The work table 70 is constituted by the boarding table 58 and the expansion table 64.

As shown by a solid line in FIG. 4, the boarding platform 58 is formed along the side surface of the auger drive mechanism 12, and the extension board 64 is mounted on the front surface of the auger drive mechanism 12 at a substantially right angle from the tip of the boarding platform 58. The board extends from the boarding platform 58 along. Further, the distal end of the extension table 64 extends to the vicinity of the output shaft 22c farthest from the boarding table 58.
Further, as shown by a two-dot chain line in FIG. 4, the boarding platform 58 is rotated about 90 degrees around the support shaft 60 so that the boarding platform 58 and the extension platform 64 can be moved away from the auger drive mechanism 12. Have been.

Next, the operation of the above-described working table lifting / lowering device for a pile construction machine of this embodiment will be described. First, as shown by a two-dot chain line in FIG. 4, the boarding platform 58 and the extension platform 64 are turned to a position away from the auger drive mechanism 12, and then lowered to a height at which the operator can get on the boarding platform 58. Is done.

Then, an operator gets on the boarding platform 58 and drives the worktable winch 56 to move the worktable 70 along the second guide rails 38 and 39 to the excavating tools 24a, 24b and 2.
4c. At this time, another worker on the ground side may operate the workbench winch 56 in accordance with the instruction of the worker on the boarding platform 58, or the worker on the workbench 70 may It may be remotely operated on the above.

Next, an operator on the boarding platform 58 instructs another operator on the ground side to operate a main winch (not shown) to move the auger drive mechanism 12 to the excavators 24a, 24b, 24.
Lower to near the tip of c. Then, the boarding platform 58 is turned around the support shaft 60, and as shown by a solid line in FIG. 4, the extension platform 64 is turned around the front side of the auger drive mechanism 12, and along the output shafts 22a, 22b, 22c. To do.

An operator on the boarding platform 58 moves from the boarding floor 61 to the extended floor 66 and receives the output shafts 2 of the auger drive mechanism 12.
The work is performed in a state of approaching 2a, 22b, 22c. For example, in the connection work, each output shaft 2 of the auger drive mechanism 12
Hexagon holes 26a, 26 formed in 2a, 22b, 22c
Since the hexagonal shaft portions 28a, 28b, 28c of the excavators 24a, 24b, 24c are inserted into the b, 26c, it is necessary to connect them in phase.

At this time, the worker instructs the ground worker to perform the inching operation of the output shafts 22a, 22b, and 22c, and moves on the extension base 64 so that the phases match, while moving the excavators 24a, 24b. , 24c to align the cores. After inserting the digging tools 24a, 24b, 24c, the operator on the extension base 64 can output the output shafts 22a, 22b,
22c through holes 34a, 36a, 34b, 36b, 3
4c, 36c and grooves 30a, 32a, 30b, 32b,
Pins (not shown) are driven into and inserted into 30c and 32c with a hammer or the like.

After the work is completed, the platform 58 is pivoted around the support shaft 60, and the platform 58 and the extension platform 64 are separated from the auger drive mechanism 12, as shown by a two-dot chain line in FIG. Next, the workbench winch 56 is driven to lower the workbench 70, and the worker is lowered to the ground.

Excavation is performed while driving the auger drive mechanism 12 to rotate the excavators 24a, 24b, 24c. Even when the auger drive mechanism 12 is lowered, the auger drive mechanism 12 does not interfere with the boarding table 58 and the extension table 64, and the auger drive mechanism 12 is supported while the work table 70 is supported on the second guide rails 38 and 39. It can be lowered without hindrance.

As described above, the operator operates the extension table 64
From the front side of the auger drive mechanism 12, the output shafts 22a, 22
The connection work between the b and 22c and the excavating tools 24a, 24b and 24c, the maintenance and inspection work of the auger drive mechanism 12, and the like can be performed close to the output shafts 22a, 22b and 22c and the auger drive mechanism 12. Moreover, the boarding platform 58 and the extension platform 6
4 can be used with a large area. on the other hand,
By rotating the boarding base 58 about the support shaft 60, even if the auger drive mechanism 12 is moved up and down, there is no interference, and no trouble occurs in the pile construction work.

Next, a work table of a second embodiment different from the above-described embodiment will be described with reference to FIG. The same members as those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. The same applies hereinafter. In the second embodiment, as in the above-described embodiment, the boarding platform 80 is supported by the movable platform 42 so as to be able to turn around the support shaft 60. The boarding platform 80 is configured such that a flat boarding floor 82 is surrounded on four sides by a fence member 84, and an extension platform 86 is attached to the boarding platform 80 by the support shaft 60.
Is supported so as to be pivotable about a support shaft 88 parallel to the support shaft 88. The expansion table 86 is formed by surrounding a flat expansion floor 90 with a fence member 92 on four sides.

As shown by the solid line in FIG.
It can be pivoted about the support shaft 60 and moved to a position along the side surface of the auger drive mechanism 12, and
As shown by a two-dot chain line in FIG. 2, the rotation mechanism is configured to be able to pivot about the support shaft 60 by approximately 90 degrees and move to a position far away from the auger drive mechanism 12.

As shown by the solid line in FIG. 5, the extension table 86 is pivoted around the support shaft 88 to move the extension table 86 to a position protruding along the front side of the auger drive mechanism 12. 5, and can be moved to a position pivoted about the support shaft 88 by approximately 90 degrees as shown by a two-dot chain line in FIG. In this embodiment,
A work table 94 is provided by the moving table 42, the boarding table 80, and the extension table 86.
Is configured.

Also in the case of the second embodiment, at the time of the above-described connection work, an operator gets on the boarding platform 80 and drives the worktable winch 56 to move the worktable 94 up and down. Also,
As shown by the solid line in FIG. 5, the platform 80 is pivoted around the support shaft 60, and the platform 80 is moved to a position along the side surface of the auger drive mechanism 12.

Then, the worker moves to the extension table 86,
The extension table 86 is swiveled around the support shaft 88 so that the extension table 86
Is moved to a position along the front side of the auger drive mechanism 12. Thereby, the worker can easily perform the connection work on the output shafts 22a, 22b, 22c of the auger drive mechanism 12 from the front side.

After the connection operation is completed, the extension base 86 is turned around the support shaft 88, and then the boarding base 8 is turned on.
0 is pivoted around the support shaft 60. As a result, the boarding platform 80 and the extension platform 86 are separated from the auger drive mechanism 12, and it is possible to prevent interference with the auger drive mechanism 12 when the auger drive mechanism 12 moves up and down.

Next, the working table of the third embodiment will be described with reference to FIG.
This will be described with reference to FIG. In the third embodiment, the boarding platform 100 is supported on the movable platform 42 so as to be pivotable about the support shaft 60, and the boarding platform 100 connects the flat boarding floor 102 to the fence member 1.
04.

When the boarding board 100 is turned to a position along the side surface of the auger drive mechanism 12, as shown by the solid line in FIG. 6, the boarding board 100 projects forward from the front of the auger drive mechanism 12. Is formed. And
Boarding platform 1 protruding from the front of auger drive mechanism 12
At 00, an extension table 106 is supported rotatably about a rotation axis 108 orthogonal to the support axis 60.

The extension table 106 has a flat extension floor 110 and a fence member 112 surrounding three sides of the extension floor 110. As shown in FIG. 6, the extension base 106 changes from a state where the boarding floor 102 and the extension floor 110 are on the same plane.
It is configured so that it can be rotated about the rotation axis 108 and rotated by approximately 90 degrees so that the expanded floor 110 is in an upright state. In order to be able to stand up, the boarding board 1
00 fence member 104 is not provided. In the third embodiment, a work table 114 is configured by the moving table 42, the boarding table 100, and the extension table 106.

In the case of the third embodiment, the platform 100 is turned around the support shaft 60 to bring the platform 100 close to the side surface of the auger drive mechanism 12, and then the extension platform 106 is By rotating it around, the extension table 106 is in a state of projecting toward the front side of the auger drive mechanism 12. Thereby, the worker can move from the boarding floor 102 to the expansion floor 110 and easily perform the connection work of the output shafts 22a, 22b, 22c.

After the connection work is completed, the operator moves to the boarding platform 10.
0, the extension table 106 is rotated around the rotation axis 108, and as shown by the two-dot chain line in FIG.
Erect. Then, the boarding base 100 is turned around the support shaft 60 and separated from the auger drive mechanism 12. Therefore, even if the auger drive mechanism 12 is moved up and down, the boarding platform 10
0, does not interfere with the extension base 106. Further, since the extension base 106 can be erected, the size is reduced.

Next, a working table of a fourth embodiment will be described with reference to FIG. In the fourth embodiment, the boarding table 120 is supported by the moving table 42 so as to be pivotable about the support shaft 60, and the boarding table 120 connects the flat boarding floor 122 to the barrier member 124.
Is surrounded by three sides.

As shown by the solid line in FIG. 8, when the board 120 is swung to a position along the side surface of the auger drive mechanism 12, the board 120 protrudes forward from the front of the auger drive mechanism 12. Is formed. And
An extension board 126 is supported at the tip of the boarding table 120 so as to be slidable in a direction orthogonal to the boarding table 120. When the extension board 126 is slid, the extension board 126 is located on the front side of the auger drive mechanism 12, and , The extension base 126 can be extended until it reaches the output shaft 22c.

The extension table 126 is provided on the flat extension floor 12.
8 is surrounded by a fence member 130. The fence member 130 is provided with a door 132 so that the user can easily move from the boarding table 120 to the extension table 126. In the present embodiment, the working table 134 is configured by the moving table 42, the boarding table 120, and the extension table 126.

The board 120 is swiveled about the support shaft 60 to bring the board 120 close to the side of the auger drive mechanism 12, and the extension board 126 is slid to stretch the extension board 126 on the front side of the auger drive mechanism 12. Let out. Therefore, the operator can easily transfer the output shafts 22a, 22b, and 22c from the boarding table 120 to the extension table 126.

After the connection work is completed, the worker moves to the boarding board 120.
The extension board 126 is slid and retracted from the front side of the auger drive mechanism 12. And boarding board 1
20 is pivoted about the support shaft 60 to separate the boarding platform 120 from the auger drive mechanism 12. Thus, even if the auger drive mechanism 12 is moved up and down, the boarding platform 120 and the extension platform 126
Does not interfere.

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.

[0044]

As described above in detail, the work platform elevating device for a pile construction machine according to the present invention moves from the boarding platform to the extension platform, and performs auxiliary work such as connection work in front of the construction mechanism and maintenance of the construction mechanism. Inspection work and the like can be easily performed, and the boarding base can be turned around the support shaft, so that there is no interference even when the construction mechanism is moved up and down. By integrally forming the extension board with the boarding board at a substantially right angle, the worktable can be configured with a simple structure. By pivotally supporting the extension table on the boarding table, the extension table can be further separated from the construction mechanism.

In addition, by supporting the extension board on the board so as to be able to stand up, the board becomes compact when the board is separated from the construction mechanism. By supporting the extension base slidably on the boarding base, the extension base can be separated further from the construction mechanism. Further, in the case where the construction mechanism is an auger drive mechanism having a plurality of axes, the connection work or the like on the front side of the construction mechanism is particularly facilitated.

[Brief description of the drawings]

FIG. 1 is a front view of a pile construction machine provided with a work bench lifting device for a pile construction machine as one embodiment of the present invention.

FIG. 2 is an enlarged front view of an output shaft and an excavator of the auger drive mechanism of the embodiment.

FIG. 3 is an enlarged front view of a work table of the work table elevating device for a pile working machine according to the present embodiment.

FIG. 4 is an enlarged plan view of a work table of the work table elevating device for a pile construction machine according to the present embodiment.

FIG. 5 is an enlarged plan view of a work table of a work table elevating device for a pile construction machine according to a second embodiment.

FIG. 6 is an enlarged plan view of a work table of a work table elevating device for a pile construction machine according to a third embodiment.

FIG. 7 is an enlarged front view of a work table of a work table elevating device for a pile construction machine according to a third embodiment.

FIG. 8 is an enlarged plan view of a work table of a work table elevating device for a pile working machine according to a fourth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Pile construction machine main body 2 ... Leader 8,10 ... First guide rail 12 ... Auger drive mechanism 38,39 ... Second guide rail 42 ... Moving platform 56 ... Work table winch 58,80,100,120 ... Boarding platform 60 ... Support shaft 64,86,106,126 ... Expansion table 70,94,114,134 ... Work table

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-9-125384 (JP, A) JP-A-8-269959 (JP, A) JP-A-6-173264 (JP, A) JP-A-1- 192917 (JP, A) Jiko 57-26926 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) E02D ^7/ 00-13/10

Claims (6)

(57) [Claims] 1. A pile construction machine that raises and lowers a construction mechanism along a first guide rail provided on a leader that is erected, comprising: a second guide rail that is provided on the leader in parallel with the first guide rail. A worktable having a movable table supported so as to be movable along, a boarding table pivotally supported by the movable table, and an extension table supported by the boarding table and extending to the front side of the construction mechanism. A work table lifting / lowering device for a pile construction machine, comprising: a driving mechanism provided for raising and lowering the work table. 2. The extension platform is substantially perpendicular to the boarding platform.
The workbench elevating device for a pile construction machine according to claim 1, wherein the worktable elevating device is formed integrally. 3. The work table elevating device for a pile construction machine according to claim 1, wherein the extension table is pivotally supported by the boarding table. 4. The work table elevating device for a pile construction machine according to claim 1, wherein the extension table is supported by the boarding table so as to be able to stand up. 5. The apparatus according to claim 1, wherein the extension table is slidably supported by the boarding table. 6. The work table lifting and lowering device for a pile construction machine according to claim 1, wherein the construction mechanism is an auger drive mechanism having a plurality of axes.