JPH1046576A - Leader assembling-disassembling work device of pile driver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpenmsively manufacture a work device with which workability and safety are enhanced when a peripheral member such as a leader and a back stay is assembled and disassembled. SOLUTION: When a leader 4 is thrown down sideways, plate-like work decks 21 and 22 are arranged in both side parts of a ladder 18 positioned on the upper side of the leader 4, and its under surface is supported with the leader 4 by a stay 23. The work decks 21 and 22 arranged in a desired length in the lengthwise direction of the leader 4 according to the necessity of work besides being arranged in the vicinity of at least two connecting parts on which assembling disassembling work concentrates. When the leader 4 is thrown down sideways, the work decks 21 and 22 are horizontally positioned in left and right both side parts of the upper side ladder 18, and assembling-disassembling work of a peripheral member including the leader 4 and a back stay is performed from the horizontal work decks 21 and 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for assembling or disassembling a leader, e.g., a backstay attached to a leader of a pile driver, and a peripheral member such as a work wire rope on the ground. The present invention relates to a working device for assembling and disassembling a leader of a pile driver used.

[0002]

2. Description of the Related Art When a pile driver is carried into a construction site or the like to perform pile driving, as an assembly of a leader and peripheral members disassembled for transportation. 1. Disassembled reader connection 2. Attach the backstay to the reader 3. Attach the middle sheave and pendant rope to raise the reader. 4. Rope hook of work wire rope After work such as electrical wiring and connection of hydraulic hoses were performed on the ground, the leader was erected on the pile driver body by winding up the pendant rope,
Pile driving is in operation.

When a pile driver is to be carried out of a construction site or the like, the pendant rope is loosened and the leader in an upright state is laid down on the ground in front of the main body of the pile driver to transport the leader and peripheral members. Decompose into a state.

A large-diameter steel pipe is generally used for the above-mentioned leader, and a pair of guide pipes for guiding the lifting and lowering of a hammer and an auger, and a ladder for maintenance are provided along the length of the steel pipe. It is attached.

[0005]

Although the above assembling and disassembling operations are performed by turning the reader down on the ground,
The upper surface of the leader on which the worker rides is the arc surface of the steel pipe, the guide pipe is coated with grease to make the hammer and auger slippery, and it is quite high from the ground, It is desired to increase the safety of the assembling and disassembling operations.

As countermeasures against this, it is conceivable that a handrail is erected at an appropriate height on the upper surface of the reader in a sideways position, or work is separately performed using an aerial work vehicle. In this case, since the handrail and the work wire rope are arranged on the same side of the leader, there is a risk that they may interfere with each other when the work is performed with the leader standing up. In addition, the latter aerial work vehicle increases operating costs, and the work platform of the aerial work vehicle has a limit in approaching so as not to interfere with the reader and its peripheral members. It was difficult to perform detailed manual work of the places. Accordingly, the present invention provides an inexpensive working machine for assembling and disassembling a leader of a pile driver, which improves the workability and safety of assembling and disassembling a leader and peripheral members such as a backstay while solving the above-mentioned problems. It is intended to provide to.

[0007]

According to the first object of the present invention, there is provided a pile driving machine for assembling and disassembling a leader formed by connecting a plurality of disassembled pipes in a sideways state. A flat work deck used for assembling and disassembling the leader when it is turned down is provided on the leader.

In the second invention, a pair of guide pipes for guiding the ascent and descent of the hammer and the auger are provided in the longitudinal direction of the leader constituted by connecting a plurality of disassembled pipes,
With a ladder for performing work with the leader, in a pile driver to assemble and disassemble the leader in a lying state,
A handrail used for assembling and disassembling the leader is detachably provided on the guide pipe or the ladder.

Further, as a third invention, a pair of guide pipes for guiding the ascent and descent of a hammer and an auger in a longitudinal direction of a leader constituted by connecting a plurality of disassembled pipes, and a work for performing work with the leader. In a pile driver having a ladder and assembling and disassembling the leader in a sideways state, the pair of guide pipes and the pair of side rods of the ladder are sandwiched from outside, and rolling is performed in the longitudinal direction of the guide pipe and the ladder. A work deck for assembling and disassembling a leader having a plurality of rolling wheels is detachably provided.

According to the first aspect of the present invention, the assembling and disassembling of the leader are performed on the work deck. This working deck
Since it is formed in a flat plate shape, it does not interfere with the work wire rope even in the pile driving operation state in which the leader is erected. Since the handrail of the second invention and the movable deck of the third invention are detachably attached to the guide pipe and the ladder, they do not hinder the pile driving work. Since an existing guide pipe or ladder attached as a peripheral member of the reader is used, the cost can be reduced. In the movable deck according to the third aspect of the present invention, the guide pipe or the ladder is moved in the longitudinal direction of the leader by employing the rolling wheels, and can be used at any desired position.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment to which the first invention is applied. FIG. 1 is a longitudinal sectional view of a leader lying down, and FIG. 2 is a front view of a pile driver with the leader lying down. 3 and 4 show a second embodiment to which the second invention is applied. FIG. 3 is a front view showing a state where a handrail is attached to a sideways leader, and FIG. 4 is a longitudinal section showing a state where a handrail is attached to a sideways leader. FIG. FIG. 5 is a longitudinal sectional view showing a third embodiment to which the second invention is applied, with a handrail attached to a sideways leader. 6 to 8 show a fourth embodiment to which the third invention is applied. FIG. 6 is a front view showing a state in which a handrail is attached to a sideways leader, FIG. 7 is a partially enlarged view of FIG. 6, and FIG. 7 VI
It is II-VIII sectional drawing. 9 and 10 are fifth and sixth embodiments showing an attachment / detachment mechanism used in the work deck of the third invention. FIG. 9 is a front view of the attachment / detachment mechanism of the fifth embodiment, and FIG. 10 is a sixth embodiment. FIG. 4 is a front view of a mounting / dismounting mechanism. In addition, components that are common to the embodiments are given the same reference numerals, and detailed descriptions thereof are omitted.

Pile driver 1 of the first embodiment shown in FIGS. 1 and 2
In FIG. 1, a leader 4 in a standing state in which peripheral members such as a back stay 5 have been attached is supported on three leader stands 3 disposed in front of the pile driver body 2 in a horizontal state. The reader 4 is formed by connecting three steel pipes disassembled into a length that can be transported in the vertical direction at the connection portions 6 and 7. Stay 5
And a pendant rope 11 connected with a middle sheave 10 to an elevating rope 9 supported on an A frame 8 of the pile driver body 2, and a top sheave 12 and a leader bracket 13 are provided between the top sheave 12 and the leader bracket 13. A work wire rope 14 is suspended.

A pair of parallel brackets 15, 15 project from each of four directions on the outer peripheral surface of the reader 4. The pair of brackets 15, 15
15, large-diameter guide pipes 16 and 16 are fixedly mounted,
Similarly, a pair of small-diameter guide pipes 17, 1 are provided on a pair of brackets 15, 15 located on one side when the leader 4 is turned over.
7 is fixed, and the leader 4 mounts the large-diameter guide pipes 16 on the reader stand 3 as described above.
Supported in a horizontal state. Guide pipes 16, 16, 1
Numerals 7 and 17 are connected to the entire length of the leader 4 and have an auger on the lower guide pipes 16 and a hammer on each of the guide pipes 17 on one side. ) Are mounted so as to be able to move up and down.

Ladder parts 18 and 19 are fixedly mounted on the brackets 15 and 15 located on the upper side and the other side of the leader 4 in the lying state. Each ladder 18, 19 has a bracket 15,
15, a pair of parallel side bars 20a, 20a
In a general ladder shape in which a plurality of crossbars 20b are laid at equal intervals, when the leader 4 stands, an operator climbs up the ladders 18 and 19 so that maintenance on the leader 4 can be performed.

On both sides of the upper ladder 18, flat work decks 21 and 22 used for assembling and disassembling peripheral members such as the leader 4 and the back stay 5 are provided. The work decks 21 and 22 include, in addition to a general flat steel plate, preferably expanded metal or a striped steel plate,
A flat plate in which a non-slip sheet is adhered to the surface of a metal plate or a rigid resin plate is used, and the lower surface of the flat plate is supported by the reader 4 by stays 23. The work decks 21 and 22 are provided near at least two connecting portions 6 and 7 where assembly and disassembly work are concentrated.
Is provided at a desired length in the longitudinal direction, and when the leader 4 is turned over, it is positioned horizontally on both the left and right sides of the upper ladder 18, so that the leader 4 and the back stay 5 can be assembled and assembled. The disassembly work is performed on horizontal work decks 21 and 22.
Done above.

As described above, according to the present embodiment, the work decks 21 and 22 which become horizontal when the leader 4 is turned down are provided on the left and right sides of the ladder 18 located above the leader 4 when the leader 4 is turned down. Reader 4 and backstay 5
Assembling and disassembling peripheral members such as the work deck 21,
22 can be performed safely, efficiently and simply from above, and is also suitable for fine manual work in narrow places.

Since the work decks 21 and 22 are simply supported by the leader 4 with the stay 23, the weight does not increase so much, and the structure is simple and can be manufactured at low cost. it can. Further, the work wire rope 14 is provided outside the upper ladder 18, and the work decks 21 and 22 are provided on the left and right sides of the ladder 18 deviating from the position where the work wire rope 14 is provided.
Also when performing the pile driving work with the leader 4 standing up, there is no possibility that the work decks 21 and 22 and the work wire ropes 14 interfere with each other, and there is no problem in raising and lowering the auger and hammer.

In the second embodiment shown in FIGS. 3 and 4, the handrail 30 is attached to the ladder 18 located on the upper side when the reader 4 is turned over.
In the third embodiment shown in FIG. 5, the ladder 1 is located on the side when the reader 4 is turned down.
9, a handrail 40 is detachably provided.

Handrail 3 used in the second embodiment shown in FIGS. 3 and 4
0, a pair of holding pieces 30b, 30 projecting downward in parallel are connected to the legs 30a in the vicinity of both ends in the vicinity of both ends, respectively, and at positions slightly separated from both ends of the legs 30a.
b is provided. In the handrail 30, the leg 30a is provided on the side bars 20a, 20a of the upper ladder 18, the side bars 20a are sandwiched between a pair of sandwiching pieces 30b, 30b, and the handrails 30 protrude below the side bars 20a. Sandwiching pieces 30b, 30
A set screw 31 is stretched between the lower ends of b in the horizontal direction, and is set up on the ladder 18.

The handrail 40 used in the third embodiment shown in FIG. 5 is obtained by bending the intermediate portion 40c in an oblique direction so that the upper grip portion 4 is formed.
0a and the lower mounting portion 40b are shifted in phase in the horizontal direction, and at least one pair of brackets 40d (the other is not shown) is fixed to one side of the mounting portion 40b. . At the upper and lower portions of the bracket 40d, locking holes 40e, 40e opening downward are provided at the same pitch as the side bars 20a, 20a of the side ladder 19, and on both sides of the upper locking hole 40e. , And the same sandwiching pieces 40f, 40f as in the second embodiment.

The handrail 40 is provided with the locking hole 4 of the bracket 40d.
0e, 40e are engaged with the side bars 20a, 20a of the ladder 19, the upper side bar 20a is sandwiched between the sandwiching pieces 40f, 40f, and the sandwiching pieces 40f, 4 projecting below the side bar 20a.
The grip portion 40a is positioned above the center of the upper ladder 18 and attached to the ladder 19 by laterally hanging the set screw 41 between the lower ends of 0f.

The handrails 30 and 40 of the second and third embodiments are formed to have appropriate lengths in consideration of the length of the ladders 18 and 19 and the convenience of transportation, and a plurality of handrails are respectively provided on the ladders 18 and 19. Installed at appropriate intervals. Some handrails 30, 4
Numeral 0 is disposed so as to straddle the connecting portions 6 and 7 and connect both ends of the steel pipe adjacent to the leader 4 (see FIG. 3 as an example of the handrail 30). The assembling and disassembly of the peripheral members such as the leader 4 and the back stay 5 are performed by using the ladder 18 and the ladder 19 with improved workability and safety by the handrails 30 and 40.

The handrails 30 and 40 are used as original handrails when the worker assembles and disassembles the leader 4 and moves on the ladders 18 and 19, and also when the worker moves the leader 4. It can also be a safety belt. After the assembly and disassembly of the peripheral members such as the leader 4 are completed, the handrails 30 and 40 are removed from the ladders 18 and 19.

As described above, the handrail 3 of the second and third embodiments is described.
Since the reference numerals 0 and 40 are detachably provided on the ladders 18 and 19 of the reader 4, the assembling and disassembly work of the peripheral members such as the leader 4 and the back stay 5 can be performed with handrails 30 and 40 to improve workability and safety. From the raised ladders 18 and 19, safe, efficient and simple operation can be performed.

Further, the handrails 30, 40 can be attached to any position in the longitudinal direction of the ladders 18, 19, so that fine manual work in narrow places can be easily performed. In addition, the handrails 30 and 40 can be used for hanging a safety band at the time of work, and the worker can move the reader 4 while connecting the safety band to the handrails 30 and 40, so that the safety is further enhanced.

Further, since the handrails 30 and 40 are mounted by using the existing ladders 18 and 19 as they are, there is no need to provide a dedicated bracket for the handrails on the reader side, and the structure is simple and can be manufactured at low cost. it can. Moreover, pile driver 1
When carrying out the work or disassembling and transporting the pile driver 1, the ladder 1
Since the handrails 30 and 40 are removed from the rails 8 and 19, the weight does not increase, and there is no hindrance to the work wire rope, the auger, and the hammer at the time of work.

In the fourth embodiment shown in FIGS. 6 to 8, a pair of upper and lower hammer guide pipes 17, 17 provided on one side of the reader 4 are connected by a connecting pipe 52. The work deck units 50, 50 are provided detachably and movably in the longitudinal direction of the reader 4, and the work deck units 50, 50 are integrally moved to the vicinity of the two connection portions 6, 7 of the reader 4. I can do it.

Each work deck unit 50 is mainly composed of a plurality of pipe members.
7, a mounting ladder 50b disposed outside the mounting portion 50a, and an upper ladder 1
8 and a handrail 50 erected on the front and rear surfaces in the moving direction of the work deck 50c.
d, 50d and the connection pipe 51 described above.

The mounting portion 50a is provided with the guide pipes 17, 1
7, a support plate 53 is provided inside a pipe member 52 vertically suspended along the outer side of the support plate 7, two rolling wheels 54, 54 are provided on both upper sides of the support plate 53, and one rolling wheel 55 is provided in the lower center.
Are rotatably supported by the support shafts 56, respectively.
In an insertion hole 53a formed substantially in the center of the support plate 53,
The stopper pin 57 is removably inserted. The upper and lower three rolling wheels 54, 54, 55 are inserted and removed from the upper or lower ends of the guide pipes 17, 17, similarly to the attachment and detachment of the hammer. 17 is rolled so as to sandwich it from above and below, and guides the movement of the work deck units 50, 50 connected by the connecting pipe 51.

The ladder 50b of the work deck unit 50
A plurality of crosspieces 58b are installed between a pair of side bars 58a, 58a vertically arranged outside the mounting portion 50a. The side bars 58a, 58a of the ladder 50b extend in parallel to the upper side of the work deck 50c, and cover the front and rear surfaces of the work deck 50c in the movement direction in a U-shape to constitute the above-described handrails 50d, 50d. I have.

Similar to the first embodiment, the work deck section 50c is preferably a flat plate having a non-slip sheet adhered to the surface of an expanded metal, a striped steel plate, a metal plate or a synthetic resin plate, in addition to a general flat steel plate. Is used. The central portion of the work deck portion 50c has a shape protruding stepwise upward so as to straddle the upper ladder 18, but the side flat portions on both sides of the ladder side and the opposite ladder side are brought close to the reader 4. Thus, assembling and disassembling operations of peripheral members such as the leader 4 and the back stay 5 can be performed as easily as possible.

The work deck units 50, 50 of the present embodiment configured as described above, when assembling the peripheral members such as the leader 4 and the back stay 5, are provided with the respective rolling wheels 54, 50.
54 and 55 are inserted from the ends of the guide pipes 17 and 17 so as to sandwich them above and below the guide pipes 17 and 17,
The work deck units 50, 50 are artificially towed or pushed to move the rolling wheels 54, 54, 55 to the guide pipes 17,
17, the two units 50, 50
Is guided near the outside of the connection portions 6 and 7.

Next, the stopper pins 57 are inserted into the respective insertion holes 53a, and the distal ends of the stopper pins 57 projecting from the insertion holes 53a are connected to the guide pipes 17 and 1 respectively.
7, the work deck units 50, 50 are restricted from moving in the longitudinal direction of the leader by being inserted inside the two vertical bars 59, 59 or outside the same two vertical bars 59, 59.

After assembling the peripheral members such as the leader 4 and the back stay 5, the stopper pin 57 is pulled out from the insertion hole 53a, and the work deck unit 50,
50 is moved to the end of the guide pipes 17, 17 and the rolling wheels 54, 54, 55 are moved to the guide pipes 17, 17
Work deck units 50, 50
Is removed, the reader 4 can be set up.

When disassembling the peripheral members such as the leader 4 and the back stay 5 into a transportable state, the rolling wheels 54, 54, 55 of each work deck unit 50 are guided similarly to the above-described assembly. The work deck units 50, 50 are attached and detached by inserting and removing from the ends of the pipes 17, 17.

Since the work deck unit 50 of the present embodiment integrally has the ladder 50b for lifting and lowering and the handrail 50d, assembling and disassembling operations of the peripheral members such as the reader 4 and the back stay 5 can be performed more safely in a shorter time. This can be performed simply and reliably. Ladder 50b and handrail 50d
It can also be used for safety strapping during work, and since the worker can move the reader 4 with the safety strap connected to the handrail, safety can be further improved.

The guide pipe 1 is attached to the mounting portion 50a.
Rolling wheels 54, 54, which roll while sandwiching 7, 17 from above and below
By providing the 55, the work deck unit 50, 50 can be moved to any desired position of the guide pipes 17, 17 when assembling or disassembling the leader 4, so that fine manual work in a narrow place can be easily performed. Will be able to do it. Further, in the present embodiment, a pair of work deck units 5
Because 0 and 50 are connected together by the connecting pipe 51,
The workability of attaching and detaching the guide pipes 17 and 17 and the workability of moving the guide pipes 17 are excellent.

Next, fifth and sixth embodiments shown in FIGS. 9 and 10 will be described. Both embodiments are application examples of the fourth embodiment using FIGS. 6 to 8, and FIGS. 6 to 8 will be appropriately referred to in describing these embodiments. The fifth and sixth embodiments are shown in FIGS.
In the fourth embodiment shown in FIG. 8, the rolling wheels 54, 54, 55 of the work deck unit 50 are inserted and removed at the ends of the guide pipes 17, 17, whereas the upper two rolling wheels 54, 54 are provided.
In the same manner as in the fourth embodiment, the support
6, and is rotatably supported by the lower one rolling wheel 55.
By the work deck unit attaching / detaching mechanisms 60 and 70
By engaging and disengaging with the lower surface of the lower guide pipe 17,
The work deck unit 50 can be directly attached to and detached from desired positions of the guide pipes 17 and 17.

The work deck unit attachment / detachment mechanism 60 of the fifth embodiment shown in FIG. 9 is supported on the guide pipe side of the support plate 53 via four guide bolts 61 so as to be vertically movable. The lower rolling wheel includes a slide bracket 62, an adjustment bolt 64 that supports the receiving piece 62 b of the bracket 62 and moves the slide bracket 62 up and down, and a lock nut 65 that fixes the adjustment bolt 64. 55 is a support plate 53 and a slide bracket 62
And is rotatably supported between them.

Four guide holes 53b are vertically formed in the upper, lower, left and right sides of the support plate 53, and a bolt mounting piece 63 having a female screw hole 63a formed in a vertical direction is provided below the middle of the guide holes 53b. It is protruding. Slide bracket 62
Is a housing part 6 which protrudes in the center toward the guide pipe in a flat plate shape.
2a is provided, and a bearing hole 62c is formed in the housing portion 62a. A bearing plate 66 that covers the bearing hole 62c so as to be openable and closable is supported by a support bolt 67 on the outer surface of the housing portion 62a, and the above-described receiving piece 62b is protruded along the lower side of the housing portion 62a.

Four guide bolts 61 are inserted into the upper and lower sides of the slide bracket 62, and the guide bolts 61 are inserted into the guide holes 53b, and project from the support plate 53 toward the side opposite to the guide pipe. Bolt 6
The slide bracket 62 is attached to the support plate 53 so as to be movable in the up-down direction by engaging a nut or a retaining ring to the tip of 1. The lower rolling wheel 55 is housed in the housing portion 62 a of the slide bracket 62 covered by the support plate 53, and the outer end of the support shaft 68 inserted into the center of the rolling wheel 55 from the bearing hole 62 c of the support plate 53. Is stopped by the bearing plate 66.

A male screw 64 a of the adjusting bolt 64 is screwed into the female screw hole 63 a of the bolt mounting piece 63 from below, and the male screw 64 protrudes upward from the bolt mounting piece 63.
The height of the rolling wheel 55 is adjusted by supporting the lower surface of the receiving piece 62b at the tip of “a” and holding the slide bracket 62.

With the work deck unit attaching / detaching mechanism 60 of the present embodiment configured as described above, the work deck units 50, 50 shown in the fourth embodiment of FIGS.
7 and 17, the adjusting bolt 64 is previously screwed downward and the slide bracket 62 and the rolling
5 is positioned below the support plate 53 and the upper and lower rolling wheels 5
4, 54, 55, the upper and lower guide rails 17, 1
7 is larger than the distance between the outer surfaces.

Then, the lower portions of the upper rolling wheels 54, 54 are placed on the upper guide rails 17 from the outer positions of the guide rails 17, 17 at which the work deck units 50, 50 are desired to be mounted. The hanging bracket 50 is suspended from the upper guide rail 17, and the adjusting bolt 64 of the work deck unit attaching / detaching mechanism 60 is screwed upward, so that the slide bracket 62 and the lower rolling wheel 55 are integrally moved upward. Is brought into contact with the lower surface of the lower guide rail 17 as shown in FIG. 9, and the adjustment bolt 64 is fixed with the lock nut 65. The four guide bolts 61 for guiding the vertical movement of the slide bracket 62 can be formed by screwing the guide bolt 61 into the nut when the member to be engaged with the tip is a nut.
Can be held more reliably.

When removing the work deck units 50, 50 from the guide pipes 17, 17, the slide bracket 62 and the rolling wheel 55 are integrated by loosening the lock nut 65 and screwing the adjustment bolt 64 downward. Descends. After the distance between the upper and lower rolling wheels 54, 54, 55 is made larger than the distance between the outer surfaces of the upper and lower guide rails 17, 17, the work deck units 50, 50 suspended from the upper guide rail 17 are removed. Lift up once and remove it outside guide rails 17,17.

The work deck unit attaching / detaching mechanism 70 of the sixth embodiment shown in FIG.
A long plate-like rotating arm 71 is rotatably supported with its base end pivotally attached to a support plate 53 with a support bolt 72. A lower rolling wheel 55 is rotatably supported by a support shaft 68 between an intermediate portion of the rotation arm 71 and the support plate 53, and is supported by a bearing hole 71 a of the rotation arm 71. The outer end of the shaft 68
The receiving piece 71 b is fixed to the inside of the tip of the rotating arm 71 by a bearing plate 66.

When the rotating arm 71 is rotated in the lateral direction, a bolt mounting piece 63 is provided on the support plate 53 at a position below the receiving piece 71b. The bolt mounting piece 63 is provided in the female screw hole 63a of the bolt mounting piece 63. The male screw 64a of the adjusting bolt 64 is screwed from below, and the lower end of the receiving piece 71b is supported on the tip of the male screw 64a projecting upward from the bolt mounting piece 63, and the turning arm 71 is held down. The height of the driving wheel 55 is adjusted.

The turning arm 71 is turned up and down around the supporting bolt 72 by screwing or unscrewing the adjusting bolt 64 so that the upper part of the rolling wheel 55 contacts the lower surface of the lower guide rail 17 or By being separated downward, the work deck units 50, 50
It is attached to and detached from 7,17.

As described above, according to the work deck unit attaching / detaching mechanisms 60 and 70 of the fifth and sixth embodiments, since the work deck units 50 and 50 are directly attached to and detached from the desired positions of the guide rails 17 and 17, the work Deck units 50, 5
0 is hardly moved, and can be attached and detached even when the upper and lower ends of the reader are closed. The work deck units 50, 50 can be attached and detached by the work deck unit 5
In addition to hoisting and unloading 0,50, it is only necessary to screw the adjusting bolt 64, so that the attaching / detaching operation can be performed in a short time and simply. Furthermore, when the rolling wheels 54, 54, 55 are rolled on the guide rails 17, 17 to move the work deck units 50, 50 to other work positions, the moving distance is short, and in particular, the leader length is reduced. When the distance is long, the moving operation can be performed in a shorter time.

The work deck according to the first aspect of the present invention may be provided on one side or both sides of the lower part of the leader, which does not hinder the elevating of the hammer or the auger, in addition to the upper surface of the leader when the leader is laid down as shown in the first embodiment. it can. In the handrail according to the second aspect of the present invention, when a guide pipe for a hammer or an auger is located on the side of the sideways leader, the handrail can be attached using the guide pipe.

In the fourth embodiment to which the third invention is applied, the connecting pipe connecting the pair of work deck units may be replaced with a rope, and of course, only one work deck unit of the fourth embodiment is used. It is possible. In the third invention, at least the work deck and the rolling wheels are sufficient, and the handrail or ladder used as a unit in the fourth embodiment may be omitted. In addition, the work deck of the third invention can be attached by using an existing ladder provided in the longitudinal direction of the leader, in addition to the guide pipe for the hammer and the auger, and the guide pipe and the ladder are turned over. The work deck can be mounted on either the side or top of the leader.

[0052]

As described above, according to the first aspect of the present invention, a flat work deck used for assembling and disassembling the leader when the leader is turned down is provided on the leader, thereby assembling peripheral members such as the leader and the backstay. And disassembly work can be performed safely, efficiently and simply from the work deck. In addition, fine manual work in narrow places can be easily performed from the work deck. Further, since the working deck has a simple structure in which the working deck is formed in a flat plate shape, the working deck does not increase so much, can be manufactured at low cost, and there is little possibility that the working deck interferes with the working wire rope.

According to the second aspect of the present invention, in which a handrail used for assembling and disassembling the leader is detachably provided on a guide pipe or ladder provided in the longitudinal direction of the leader, assembling of peripheral members such as the leader and the back stay. And disassembly work can be performed safely, efficiently and easily. Furthermore, the handrail of the second invention can be freely attached to any position in the longitudinal direction of the guide pipe or the ladder, and fine manual work in a narrow place can be easily performed. The handrail of the second invention
It can be used for safety strapping during work, and since the worker can move the reader with the safety strap connected to the handrail,
Safety can be further improved.

Further, in the second invention, since the existing guide pipe or ladder is used as it is for attaching the handrail, there is no need to provide a dedicated bracket for attaching the handrail to the reader side, and the manufacturing can be performed at low cost. it can. Moreover,
When the pile driver is used or when the pile driver is disassembled and transported, the handrail is removed from the guide pipe or ladder, so that the weight does not increase, and there is nothing to work wire ropes, augers, and hammers at the time of the operation. It does not hinder.

Further, according to the third invention, a plurality of rolling wheels rolling in the longitudinal direction of the guide pipe or the ladder with a pair of side pipes of the guide pipe or the ladder provided in the longitudinal direction of the leader being sandwiched from the outside. The work deck for assembling and disassembling the leader provided with the detachable is provided so that the assembling and disassembling work of the peripheral members such as the leader and the back stay can be performed more safely, simply and reliably in a short time. become.

Further, since the existing guide pipes and ladders are used as they are for mounting the work deck, there is no need to provide a dedicated bracket for mounting the work deck on the leader side, and the manufacturing can be performed at low cost. Further, by employing the rolling wheels, the work deck can be moved to any desired position of the desired guide pipe or ladder, so that fine manual work in a narrow place can be easily performed. In addition, the work deck is removed from the guide pipes and ladders when working with the pile driver or when disassembling and transporting the pile driver, so that the weight does not increase, and the wire rope, auger, hammer, and the like for the work are used. It does not hinder anything.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention in a state in which a reader is laid down.

FIG. 2 is a front view of a pile driver showing a first embodiment of the present invention in which a leader is laid down.

FIG. 3 is a front view showing a second embodiment of the present invention with a handrail attached to a sideways leader;

FIG. 4 is a longitudinal sectional view showing a second embodiment of the present invention in which a handrail is attached to a sideways leader;

FIG. 5 is a longitudinal sectional view showing a third embodiment of the present invention in which a handrail is attached to a sideways leader;

FIG. 6 is a front view showing a fourth embodiment of the present invention with a handrail attached to a sideways leader;

FIG. 7 is a partially enlarged view of FIG. 6 showing a fourth embodiment of the present invention;

FIG. 8 is a sectional view taken along line VIII-VIII of FIG. 7, showing a fourth embodiment of the present invention.

FIG. 9 is a front view of a work deck unit attaching / detaching mechanism showing a fifth embodiment of the present invention.

FIG. 10 is a front view of a work deck unit attaching / detaching mechanism showing a sixth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Pile driver 2 ... Pile driver main body 3 ... Leader stand 4 ... Leader 5 ... Back stay 6, 7 ... Connection part of the steel pipe which comprises the leader 4 8 ... A frame 9 ... Elevation rope 10 ... Middle sheave 11 ... Pendant Rope 12 ... Top sheave 13 ... Leader bracket 14 ... Working wire rope 15 ... Bracket 16 ... Guide pipe for auger mounting 17 ... Guide pipe for hammer mounting 18,29 ... Ladder 20a ... Side bar of ladder 18,19 20b ... Cross bars 21 and 22 of ladders 18 and 19 Flat work deck 23 Stay 30 Handrail 30a Leg 30b Nipping piece 31 Set screw 40 Handrail 40a Grip portion 40b Mounting portion 40d Bracket 40e Lock Hole 40f: pinching piece 41: set screw 50: work deck unit 51: connecting pipe 50a: mounting Ladder 50b ... Work deck 50d ... Handrail 53 ... Support plate 53a ... Insert hole 53b ... Guide hole 54 ... Upper rolling wheel 55 ... Lower rolling wheel 57 ... Stopper pin 58a ... Ladder 50b Side bar 58b ... rung of ladder 50b 59 ... vertical bar of guide pipe 17 ... work deck unit attaching / detaching mechanism 61 ... guide bolt 62 ... slide bracket 62a ... accommodating part 62b ... receiving piece 62c ... bearing hole 63 ... bolt mounting piece 63a ... Female screw hole 64 ... Adjustment bolt 64a ... Male screw 65 ... Lock nut 66 ... Bearing plate 68 ... Support shaft 70 ... Work deck unit attaching / detaching mechanism 71 ... Rotating arm 71a ... Bearing hole 71b ... Receiving piece 72 ... Support bolt

Continuation of the front page (72) Inventor Yoko Tomita 1-1, Sanbonmatsucho, Atsuta-ku, Nagoya-shi, Aichi Japan Vehicle Manufacturing Co., Ltd.

Claims (3)

[Claims] 1. A flat work deck used for assembling or disassembling a leader when the leader is laid down in a pile driving machine for assembling and disassembling a leader constituted by connecting a plurality of disassembled pipes in a sideways state. A working device for assembling and disassembling a leader of a pile driver, wherein the leader is provided on the leader. 2. A pair of guide pipes for guiding the lifting and lowering of a hammer and an auger, and a ladder for performing work with the leader are provided in the longitudinal direction of a leader constituted by connecting a plurality of disassembled pipes, In a pile driving machine for assembling and disassembling the leader with the leader lying down, a handrail used for assembling and disassembling the leader is detachably provided on the guide pipe or the ladder. Working equipment. 3. A pair of guide pipes for guiding the ascent and descent of a hammer and an auger, and a ladder for performing work with the leader in a longitudinal direction of a leader formed by connecting a plurality of disassembled pipes, In a pile driving machine for assembling and disassembling the leader in a sideways state, a plurality of rolling rollers rolling in the longitudinal direction of the guide pipe and the ladder with the pair of guide pipes and the pair of side rods of the ladder sandwiched from outside. A work apparatus for assembling and disassembling a leader of a pile driver, wherein a work deck for assembling and disassembling a leader having a driving wheel is detachably provided.