JPH08269958A - Elevation device for working platform for pile constructing machine - Google Patents

Abstract

PURPOSE: To perform the connecting operations, maintenance/inspection works, etc., easily and efficiently. CONSTITUTION: A work executing mechanism elevates and sink along the first guide rails 8, 10 furnished on a leader 2 installed in upright attitude. A working platform 60 is supported movably along the second guide rails 36, 38 furnished on the leader 2 parallel with the first guide rails 8, 10 and is suspended using a winch. On the working platform 60, an aux. mechanism for works is installed, which may consists in a pin mounting/removing mechanism 64, in which a coupling pin 90 for a rotary shaft 84 of the work executing mechanism with an auger drill 16 is moved in the pin axial direction so that it is mounted and removed, or may be a wire set-off mechanism, screw tightening/loosening mechanism, axial aligning mechanism, lubricant applying mechanism, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for connection work, maintenance work, inspection work and the like between an auger drill and piles and a construction mechanism such as an auger drive mechanism and a hammer mechanism which are moved up and down along a guide rail provided on a leader. The present invention relates to a workbench lifting device for a pile construction machine that lifts and lowers a workbench used.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Utility Model Publication No. 57-26926, a workbench is mounted on a guide shaft having a hexagonal cross section along a leader so that the workbench can be lifted and lowered, and the workbench is hung by a winch. A device having a mechanism for rotating a guide shaft is known.

Further, as disclosed in Japanese Patent Laid-Open No. 5-331855, a workbench is supported so as to be vertically movable along a guide frame provided on a leader, and a wire having one end fastened to the workbench is wound around a sheave. After that, wind it up on the drum on the car body,
It is known that the work table is configured to be raised and lowered.

[0004]

With such a conventional apparatus, an operator can board the work table and move the work table to the vicinity of the construction mechanism to perform connection work, maintenance / inspection work, and the like. . However, for example, when connecting the auger drive mechanism and the auger drill, the operator leans out from the workbench and pushes the auger drill to perform the centering work of the auger drive mechanism and the auger drill. Also, the worker inserts the connecting pin by leaning out from the work table and hitting it with a hammer. For this reason, the operator must perform labor-intensive work on a workbench at a high place, and be careful not to drop tools such as hammers and parts such as connecting pins. There was a problem that I had to work while doing it.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a work platform elevating / lowering device for a pile construction machine capable of easily and efficiently performing connection work, maintenance / inspection work, and the like with the object of solving the above problems. .

[0006]

In order to achieve such an object, the present invention has the following constitution as means for solving 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, moves along a second guide rail provided on the leader in parallel with the first guide rail. This is the structure of a work platform lifting device for a pile construction machine, which is provided with a drive mechanism for lifting and lowering a work platform supported so as to be possible, and a work auxiliary mechanism is attached to the work platform.

Further, the work assisting mechanism may be a pin attaching / detaching mechanism which moves the connecting pin of the construction mechanism and the auger drill in the axial direction of the connecting pin to attach / detach the pin, or to fix the outer periphery of the pile. It may be a wire removing mechanism including an arm member that can move along the outer periphery of the pile while sandwiching it.

Further, the work assisting mechanism may be a screw tightening / loosening mechanism equipped with an impact wrench, or a centering mechanism for gripping and moving the tip of the auger drill. Further, the work auxiliary mechanism may be a lubricating oil application mechanism in which an oil-containing member that contacts the first guide rail and applies the lubricating oil is attached to a rotating arm.

A work operation panel for instructing the operation of the work auxiliary mechanism may be provided on the work table, or a drive source of the work auxiliary mechanism may be provided on the work table. .

[0010]

In the work platform elevating device for pile construction machine having the above-described structure, the drive system moves the work platform along the second guide rail to elevate the work platform, and the work assisting mechanism assists the work by the worker.

When the work assisting mechanism is the pin attaching / detaching mechanism, the connecting pin between the construction mechanism and the auger drill is moved in the axial direction to attach / detach the connecting pin. In the case of the wire removing mechanism, the arm member is Move while pinching the outer circumference of the pile and remove the wire from the pile. If the work assist mechanism is a screw tightening / loosening mechanism, the impact wrench tightens or loosens the bolts / nuts. If the work assistance mechanism is a centering mechanism, the tip of the auger drill is grasped and moved, and the work mechanism and the auger drill are aligned with each other. The member contacts the first guide rail, and the oil impregnating member applies the lubricating oil to the first guide rail.

In the case where the work operation panel is provided on the workbench,
The work operation panel can be operated on the workbench to instruct the operation of the work auxiliary mechanism.If the workbench has a drive source, the work auxiliary mechanism can be driven by this drive source, and the cable can be There is no need to pull in a hydraulic hose, etc. to the workbench.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings. As shown in FIGS. 1 and 2, reference numeral 1 is a self-propelled pile construction machine main body using a crawler, and a leader 2 is a pair of stays 4
The catching hawk 6 supports the leader 2 so that the leader 2 can be swung up and down, and the leader 2 can be swung around its axis.

Two long first guide rails 8 and 10 having a circular cross section are laid along the longitudinal direction of the leader 2 (see FIG. 3), and the first guide rails 8 and 10 are provided on the first guide rails 8 and 10. The auger drive mechanism 12 is slidably engaged with the first guide rails 8 and 10 via a plurality of guide gibs 14. The auger drive mechanism 12 is a rotary shaft 8 described later.
4 is configured to rotationally drive an auger drill 16.

Further, the pushing mechanism 18 connected to the auger drive mechanism 12 is slidably engaged with the first guide rails 8 and 10 through the plurality of guide gibs 20 along the first guide rails 8 and 10. Has been done. The pushing mechanism 18 is a pile 96.
It is configured such that an axial pushing force is applied to the.

The auger drive mechanism 12 includes a suspension sheave 22.
Is rotatably supported, one end of the wire 24 is fastened to the upper end of the leader 2, and a plurality of hanging sheaves 22 and a plurality of sheaves 26 rotatably supported on the upper end of the leader 2. After being wrapped around, the sheave 28 is rotatably supported on the upper end of the leader 2. Further, the wire 24 is wound around a rotary drum 34 of a main winch 32 provided in the pile construction machine body 1 via a sheave 30 rotatably supported in the middle of the leader 2, and driven by the main winch 32. Auger drive mechanism 12, pushing mechanism 18
Is configured so that it can be raised and lowered.

Further, in the leader 2, the second guide rails 36, 3 having a circular cross section are arranged in parallel with the first guide rails 8, 10.
8 is laid, and a movable table 42 is secondly mounted on the second guide rails 36 and 38 via a plurality of guide givers 40.
It is slidably engaged along the guide rails 36 and 38.

A box-shaped frame body 46 on which an operator can board is attached to the moving table 42, and
One ends of the two wires 48 and 50 are fastened. The wires 48 and 50 are stretched around a pair of sheaves 52 and 54 rotatably supported on the upper end of the leader 2, and are attached to the lower end side surface of the leader 2 as a drive mechanism winch drum 56. It is wound around 58. In this embodiment, the guide give 40, the moving base 42, the frame body 46.
The workbench 60 is formed by the. Further, the drive mechanism is not limited to the workbench winch 56, but a rack is laid on the leader 2 along the second guide rails 36 and 38, and the pinion gear attached to the rotary shaft of the motor attached to the moving table is attached to the rack. It is also possible to implement a mechanism in which the work table 60 is moved up and down by meshing with each other and rotating the motor.

On the workbench 60, a work assisting mechanism 62 used for excavation work by the auger drive mechanism 12.
Is attached. As shown in FIG. 3, in this embodiment, a pin attaching / detaching mechanism 64 is attached as the work assisting mechanism 62. In this pin attaching / detaching mechanism 64, a first link 68 that is swung around a vertical axis by a motor 70 is connected to a fixing member 66 attached to the side surface of the workbench 60.

At the tip of the first link 68, a second link 74 is swung around a vertical axis by a motor 72.
Is connected to the tip end of the second link 74, and the third link 7 is swung around a vertical axis by a motor 76.
8 are connected. A motor 80 is attached to the third link 78.
Is connected to a swinging member 82 which is swung around a horizontal axis.

The rocking member 82 is coaxially provided with an insertion cylinder 86 and a withdrawal cylinder 88 with a space between which the rotary shaft 84 of the auger drive mechanism 12 can be inserted. The insertion cylinder 86 accommodates the connecting pin 90 that connects the rotating shaft 84 and the auger drill 16 inside, and pushes out the connecting pin 90 by the supplied fluid pressure to rotate the rotating shaft 8
4 is inserted into the pin insertion hole 85, and the extraction cylinder 88 is configured to be pushed out toward the insertion cylinder 86 by the fluid pressure supplied thereto.

On the workbench 60, the motors 70, 7 are provided.
A pressure source including a battery that is a drive source 92 for the 2, 76, 80 and a pump that supplies fluid pressure is attached to the side surface of the frame body 46. In addition, a work operation panel in which various operation levers and push buttons for instructing and controlling the drive of the motors 70, 72, 76, 80, the insertion cylinder 86, and the removal cylinder 88 are arranged in the frame body 46. A work operation panel 94 is detachably attached to the frame body 46. Remove the operation control panel 94,
It is configured so that commands and control can be performed even from outside the workbench 60.

Next, the operation of the work platform elevating / lowering device for the pile construction machine according to the present embodiment described above will be described by taking the construction by the medium digging pile construction method as an example. While the auger driving mechanism 12 rotates the auger drill 16 inserted into the hollow inside of the pile 96, the pushing mechanism 18 applies a pressing force in the axial direction to build the pile 96. Then, when the main winch 32 is driven by the auger drive mechanism 12 and the push-in mechanism 18 when the main winch 32 is installed at a predetermined depth.
Raise along the guide rails 8 and 10. Next, a new pile 96 is added and the auger drills 16 are connected to each other.

Then, the operator mounts the workbench 60 and drives the workbench winch 56 to raise the workbench 60 along the second guide rails 36 and 38 to the vicinity of the tip of the auger drill 16. At this time, another operator on the ground may operate the workbench winch 56 according to the instruction of the worker on the workbench 60, or the workbench 6
An operator on the work table 60 may remotely operate the work table 60.

Next, the operator on the workbench 60 instructs another operator on the ground side to operate the main winch 32 to lower the auger drive mechanism 12. At that time, the operator on the workbench 60 performs centering while moving the auger drill 16 so that the rotation shaft 84 of the auger drive mechanism 12 and the auger drill 16 are in phase at the time of connection.

After inserting the auger drill 16 into the rotary shaft 84, the operator on the workbench 60 operates the levers and push buttons of the work control panel 94 to operate the motors 70, 72, 7 respectively.
6, 80 to drive the first link 68, the second link 74,
The third link 78 is rocked and the rocking member 82 is rocked, so that the pin insertion hole 85 of the rotary shaft 84 and the insertion cylinder 86.
And the removing cylinder 88 are moved so as to be coaxial with each other.

Then, by driving the insertion cylinder 86,
The connecting pin 90 is pushed out and inserted into the pin insertion hole 85. The other pin insertion hole 85 is similarly inserted. As a result, the rotary shaft 84 and the auger drill 16 are connected to drive the respective motors 70, 72, 76, 80,
The swing member 82 is retracted.

Next, the workbench winch 56 is driven,
After lowering the workbench 60 and lowering the worker to the ground,
The auger driving mechanism 12 and the pushing mechanism 18 are driven to rotate the auger drill 16 to build the pile 96. On the other hand, when removing the connecting pin 90, the removing cylinder 88 is driven to push the connecting pin 90 from the pin insertion hole toward the insertion cylinder 86 side, and the connecting pin 90 is removed.

As described above, the worker can mount the work table 60 and insert the auger drill 16 into the rotary shaft 84, and the worker must use a hand-held tool such as a hammer or a spanner. Without, operation panel 94 for work
By operating the pin attaching / detaching mechanism 64 from above, the work for inserting the connecting pin 90 or withdrawing the connecting pin 90 is assisted, and the inserting / withdrawing work of the connecting pin 90 can be performed easily and efficiently.

Next, the pin attaching / detaching mechanism 64 of the above-described embodiment.
A work assistance mechanism 62 of a second embodiment different from that will be described with reference to FIG. In the wire removing mechanism 100 as the work assisting mechanism 62, the first link 106 is supported between a pair of fixing members 102 and 104 fixed to the frame body 46 so as to be rotatable around a vertical axis. 1st link 1
The second link 108 and the third link 110 are supported by 06 so as to be swingable around a horizontal axis.
A fourth link 112 is connected to the tip ends of the links 108 and 110 so as to be swingable around a horizontal shaft. these,
A so-called parallel link is formed by the first to fourth links 106, 108, 110, 112.

The fourth link 112 supports a pair of arm members 114 and 116 swingably around a vertical axis, and both arm members 114 and 116 can sandwich the outer periphery of the pile 96. The spring 118 urges the arm members 114 and 116 so that the gap between them is narrowed.

A pair of fixing members 120 and 122 attached to the frame body 46 support a swinging member 124 so as to swing around a vertical axis, and the swinging member 124 and the third link 110 are separated from each other. , And are connected by a cylinder 126 swingably connected to each of them.

Further, a supporting member 128 is attached to the frame body 46 toward the pile 96, and the supporting member 128 is attached.
A connecting member 130 is swingably supported around the horizontal axis at the tip of the. A pair of sandwiching members 132 and 134 are supported by the connecting member 130 so as to be swingable around a vertical axis. The pair of holding members 132 and 134 are used for the pile 9
A spring 136 is urged so as to narrow the gap so that 6 can be held.

The wire removing mechanism 100 assists the work of removing the wires 138, 140 that suspend the piles 96 from the piles 96. The piles 96 suspended by the wires 138, 140 have already been installed. After connecting the workbench to the workbench, the workbench winch 56 is driven to raise the workbench 60 on which the worker is mounted to near the upper end of the pile 96.

Then, first, the pile 96 is sandwiched by the sandwiching members 132 and 134 to support the pile 96, and at the same time, the operator swivels the first link 106 and the swivel member 124,
The pile 96 is placed between the arm members 114 and 116, and the cylinder 126 is driven to swing the third link 110, as indicated by the arrow in FIG. As a result, both arm members 114 and 116 sandwich the outer periphery of the pile 96,
The wires 138 and 140 wound around the outer circumference of the pile 96 are moved to be scraped up, and the wires 138 and 140 wound around the outer circumference of the pile 96 are scraped onto the upper end of the pile 96, and the wires 138 and 140 are removed from the pile 96.

Therefore, the worker loosens the wires 138 and 140 that are tightened with a great force when leaning out the workbench 60 and suspending the pile 96, and
The wire removing mechanism 100 allows the wires 138, 140 to be easily and efficiently removed from the pile 96 without performing laborious and troublesome work such as lifting the wires 138, 140 against the elastic force of the wires 8, 140 and removing them from the pile 96.
Can be removed from.

A work assisting mechanism 62 of the third embodiment different from the wire removing mechanism 100 will be described with reference to FIG. The screw tightening / loosening mechanism 200 as the work assisting mechanism 62 includes a mounting base 202 mounted on the frame body 46.
And impact wrench 20 attached to the mounting base 202
4 and the impact wrench 204 is a socket 20.
6 can be projected and rotated.

The work table 60 is moved up and down to move the socket 206
To the position of the bolt or nut,
The 06 may be projected and rotated to tighten or loosen the bolts or nuts. Therefore,
It is used for tightening and loosening the nut that attaches the guide give 14 of the auger drive mechanism 12, and the work of attaching and removing the auger drive mechanism 12 to the first guide rails 8 and 10 is easy and efficient. You will be able to do it.

Further, a work assisting mechanism 62 of a fourth embodiment different from the one described above will be described with reference to FIG. The centering mechanism 210 as the work assisting mechanism 62 includes a moving arm 21 that moves back and forth and left and right with respect to the frame body 46 described above.
2 is attached, and a pair of gripping members 21 capable of gripping the auger drill 16 are provided at the tip of the moving arm 212.
4, 216 are supported via respective links 218, 220. Each link 218, 2 by a drive mechanism (not shown)
It is configured such that the outer periphery of the pile 96 can be gripped by moving the pile through 20.

As a result, when the rotary shaft 84 of the auger drive mechanism 12 and the auger drill 16 are connected, the workbench 60
Is moved to the vicinity of the tip of the auger drill 16 to move the moving arm 212 and open the grip members 214, 216. Then, the auger drill 16 is inserted between the gripping members 214 and 216, the auger drill 16 is gripped by the gripping members 214 and 216, and the moving arm 212 is moved back and forth and left and right to move the rotary shaft 84 and the auger drill 16 together. Match the cores.

Therefore, the worker instructs another worker on the ground side to lower the auger drive mechanism 12, and at the same time, the workbench 6
Lean out from 0 and grab the tip of the auger drill 16,
While paying attention to the descending auger drive mechanism 12, there is no need to move the auger drill 16 so that the axes of the rotary shaft 84 and the auger drill 16 are aligned, and the centering mechanism 210
Thus, the moving arm 212 can be moved to easily and efficiently perform centering.

Next, the work assisting mechanism 62 of the fifth embodiment will be described with reference to FIG. In the lubricating oil applying mechanism 230 as the work assisting mechanism 62, an arm member 236 is supported by a pair of fixing members 232 and 234 fixed to the frame main body 46 so as to be rotatable about a vertical axis, and the arm member 236. A swinging member 238 is swingably supported around the vertical axis at the tip of the.

The rocking member 238 has a pair of oil impregnating members 240 and 2 at the same intervals as the first guide rails 8 and 10.
42 is attached. Oil-impregnated member 240, 242
Is made of a material that can contain lubricating oil such as grease such as sponge and brush.
The lubricating oil is supplied to 0 and 242 from a lubricating oil feeder 244 attached to the swinging member 238. A rod of a cylinder 248, which is swingably supported by a fixed member 246 attached to the frame body 46, is swingably connected to the arm member 236.

This lubricating oil applying mechanism 230 is used for the cylinder 2
48 is driven to rotate the arm member 236, and the oil-impregnated members 240 and 242 are brought into contact with the first guide rails 8 and 10. The work table winch 56 is driven in the contacted state to move the work table 60 up and down, and the oil guide members 240 and 242 containing the lubricating oil supplied from the lubricating oil supply device 244 cause the first guide rail 8 to move. Apply lubricating oil to 10.

Therefore, the operator gives an instruction to another operator on the ground side to operate the winch 56 for the workbench while operating the workbench 6
Lubricating oil can be easily and efficiently applied to the first guide rails 8 and 10 without leaning from 0 and applying the lubricating oil to the first guide rails 8 and 10.

In the present embodiment, the auger drive mechanism 12 and the pushing mechanism 18 are used as the construction mechanism by way of example. However, the construction mechanism is not limited to this, and a hammer mechanism or the like can be used. The work table 60 is not limited to the case in which one of the above-mentioned ones is attached, and a plurality of types may be attached as necessary.

As described above, the present invention is not limited to such embodiments, and can be implemented in various modes without departing from the scope of the present invention.

[0048]

As described above in detail, the workbench lifting device for a pile construction machine according to the present invention lifts and lowers the workbench on which the worker is mounted, and at the same time, the work assisting mechanism allows the worker to work at high places. With the assistance of the above, it is possible to easily and efficiently perform work associated with pile construction, maintenance and inspection work, and the like. The work assistance mechanism
In the case of the pin attachment / detachment mechanism, the connecting pin can be easily and efficiently attached / detached without using a hand-held tool. Can be easily and efficiently removed.

When the work assisting mechanism is a screw tightening / loosening mechanism, the work of tightening or loosening the bolts / nuts can be easily and efficiently performed, and the work assisting mechanism uses the centering mechanism. With this, the centering work can be performed easily and efficiently. Further, when the work assist mechanism is the lubricating oil application mechanism, the operation of applying the lubricating oil to the first guide rail can be performed easily and efficiently.

[Brief description of drawings]

FIG. 1 is a front view of a pile construction machine equipped with a work platform lifting device for a pile construction machine as an embodiment of the present invention.

FIG. 2 is a side view of a pile construction machine equipped with the work platform lifting device for a pile construction machine according to the present embodiment.

FIG. 3 is an enlarged perspective view of a workbench and a pin attaching / detaching mechanism of the present embodiment.

FIG. 4 is an enlarged perspective view of a wire removing mechanism according to a second embodiment.

FIG. 5 is an enlarged perspective view of a screw tightening / loosening mechanism of a third embodiment.

FIG. 6 is an enlarged perspective view of a main part of a centering mechanism according to a fourth embodiment.

FIG. 7 is an enlarged perspective view of a lubricating oil application mechanism of a fifth embodiment.

[Explanation of symbols]

 1 ... Pile construction machine main body 2 ... Leader 8, 10 ... 1st guide rail 16 ... Auger drill 32 ... Main winch 36, 38 ... 2nd guide rail 56 ... Work bench winch 60 ... Work bench 62 ... Work auxiliary mechanism 64 ... Pin attaching / detaching mechanism 90 ... Connecting pin 96 ... Pile 100 ... Wire removing mechanism 138, 140 ... Wire 200 ... Screw tightening / loosening mechanism 204 ... Impact wrench 210 ... Centering mechanism 230 ... Lubricating oil application mechanism 240, 242 ... Oil-containing member

Claims (8)

[Claims] 1. A pile construction machine for elevating and lowering a construction mechanism along a first guide rail provided on an upright leader, comprising: a second guide rail provided on the leader in parallel with the first guide rail. A work platform lifting device for a pile construction machine, comprising: a drive mechanism for lifting a work platform movably supported along the work platform; and a work auxiliary mechanism attached to the work platform. 2. The work auxiliary mechanism is a pin attaching / detaching mechanism for attaching / detaching a connecting pin of the construction mechanism and the auger drill by moving the connecting pin in the axial direction of the connecting pin. Workbench lifting device for pile construction machine. 3. The pile construction machine according to claim 1, wherein the work assisting mechanism is a wire removing mechanism including an arm member that is movable along the outer circumference of the pile while sandwiching the outer circumference of the pile. Work platform lifting device. 4. The workbench lifting device for a pile construction machine according to claim 1, wherein the work assisting mechanism is a screw tightening / loosening mechanism including an impact wrench. 5. The workbench lifting device for a pile construction machine according to claim 1, wherein the work assistance mechanism is a centering mechanism that grips and moves the tip of the auger drill. 6. The work assist mechanism is a lubricant oil applying mechanism in which an oil impregnating member that contacts the first guide rail and applies lubricant oil is attached to a rotating arm. Workbench lifting device for pile construction machine. 7. The workbench lifting device for a pile construction machine according to claim 1, wherein a work operation panel for instructing the operation of the work auxiliary mechanism is provided on the workbench. 8. The workbench lifting device for a pile construction machine according to claim 1, wherein a drive source of the work auxiliary mechanism is provided on the workbench.