JPH0554634U - Pile driver traveling device - Google Patents

Abstract

(57) [Summary] [Purpose] The cycle time per pile driving of a pile driving machine used for coastal pile driving is greatly reduced. [Structure] A support girder 2 and a running girder 3 are combined on a pile 1a already driven into the sea, and the running roller 1 is mounted on the supporting girder 2.
The roller base 19 (removable) to which 8 is attached is fixed.
The traveling roller 18 supports the platform 4a and smoothes the traveling thereof. An endless track consisting of a double chain 13 is provided on both sides of the platform 4a, and each one point of the left and right chains 13 is fixed to the roller base 19 by its fixing device (point a), and a reaction force is applied to the traveling girder 3 for forward movement. When the hydraulic motor 11 is driven, the platform 4a can be advanced substantially by the length of the chain 13 from point a to the end.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a traveling device for a pile driver used for coastal pile driving, and more particularly, to a traveling device for a pile driver for constructing a foundation for structures such as abutments and piers.

[0002]

[Prior Art]

 The coastal pile driver is a device that travels on the piles that have been placed and moves forward while driving the piles. On the platform, a suspension leader, pile holder, 100 to 150 ton suspension crawler crane, hydraulic equipment, etc. are installed. The total weight including the platform is 300 to 400 tons. A traveling device moves the pile driving device forward and backward.

An example of a pile driving device will be described with reference to FIG. 1a is a pile that has already been driven into the seabed (waterbed), and 1b is a pile that is to be driven. The piles 1a are laid in at least two rows, and the piles 1a in each row are placed so as to face each other. The support girders 2 are hung on the heads of the piles 1a, 1a which are placed relative to each other in the left-right direction, and the running girders 3, 3 extending in the front-rear direction are sequentially arranged between the front and rear support girders 2, 2. Connect them and place the platform 4 which will be the main body of the pile driver on it. Behind the platform 4, a traveling device 5 which is a drive device of the platform 4 is arranged. The traveling device 5 has a push jack 6 for driving the platform 4 and a clamp device 30 for clamping the traveling device 5 itself to the traveling girder 3, and the pile 1b suspended by the crawler crane 7 is provided. After the hammer 8 is installed and the traveling girder 3 is connected between the piles 1b and 1a, the traveling device 5 is clamped to the traveling girder 3, and the pushing girder 6 is driven by using the traveling girder 3 as a reaction force to drive the platform 4 To move forward. Next, the clamp means of the traveling device 5 is released, the cylinder of the push jack 6 is contracted, and the traveling device 5 is moved forward. In this way, the traveling device 5 moves the platform 4 like a worm.

The applicant of the present invention has already proposed an improved technique of the above-described clamp device for a traveling device in Japanese Utility Model Laid-Open No. 360628/1993.

[0005]

[Problems to be solved by the device]

 The traveling device of the prior art including the above-mentioned Japanese Utility Model Laid-Open No. 3-36028 has the following problems. (1) The traveling device 5 for moving the platform 4, including the push jack 6, occupies a large area with a distance d in the figure of about 8 m.

(2) The stroke of the push jack 6 is about 3 m, and the platform 4 needs to move a maximum of 12 m at a time. Reshuffle is necessary. Furthermore, since this jack weighs about 2 tons, it takes a long working time, and for example, it takes 90 to 180 minutes to move the platform once.

(3) A post mechanism, a hoist crane, and the like are required to replace the jacks described above. The present invention has been proposed to solve these problems, and an object thereof is to provide a traveling device for a pile driver that can speed up the construction time significantly.

[0008]

[Means for Solving the Problems]

 The present invention solves the above-mentioned problems, and a traveling pile of a pile driving machine is sequentially extended on a pile and a pile driving platform is advanced over the traveling pile to repeat pile driving. It was applied to the traveling equipment of and adopted the following technical means. That is, the rollers that are detachably fixed to the running girders to support the pile driver platform, the endless tracks made of chains arranged on both sides of the platform, and the left and right chains each have one point. It is a traveling device for a pile driver, which is provided with a chain fixing device that is fixed to a predetermined point of the traveling girder to apply a reaction force to the traveling girder, and a driving device that drives the chain to move the platform forward and backward.

[0009]

[Action]

 Since the present invention is configured as described above, the chain that forms the endless track is fixed to the traveling girder by the fixing device, and the reaction force is applied to the traveling girder to drive the chain. It is possible to move about 12m at a time. Therefore, the work can be simplified, the construction cycle time can be greatly shortened, and the sea work can be reduced, so that the work safety is improved.

[0010]

【Example】

 An embodiment of the traveling device of the present invention will be described with reference to the drawings. 1 is a plan view of an explanatory view of a platform of this embodiment, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a front sectional view of FIG. The H-shaped steel support girders 2 are hung over the three rows of piles 1a already driven into the seabed, and the running girders of H-shaped steel are extended between the front and rear support girders 2 and 2. Connect 3 and 3 sequentially. A roller base 19 is mounted on the intersection of the support girder 2 and the traveling girder 3 and fixed with a traveling roller 18 that supports the platform 4a and facilitates its traveling.

The platform 4a is mainly made of a steel frame structure (H300 × 800), and is assembled with bolt joints and welded parts (width 12 m × length 25 m, total weight about 400 tons), and the front and back of a plurality of traveling rollers 18 are carried out. It is mounted so that it can travel. Further, the roller base 19 is provided with guide rollers 17 for guiding the traveling of the platform 4a.

The platform 4a has, on both sides thereof, an infinite track formed of a double chain 13, rotating shafts 11a and 11b of the forward hydraulic motor 11 and the reverse hydraulic motor 12, and a receiving roller for smooth running of the chain 13. 14 and a chain tension adjusting device 15 are provided. A hydraulic unit 9, a forward hydraulic motor 11, a reverse hydraulic motor 12, and an operation panel 10 are provided on the upper surface of the platform 4a.

In this embodiment, as the traveling roller 18, as shown in FIG. 4, a commercially available 100 ton tough roller (trade name) is used. FIG. 5 is an explanatory view of the roller base, and FIG. 6 is an explanatory view of the chain fixing device. Each roller base 19 is detachably fixed to the running girder 3 by four tough roller fixing devices 20. A tough roller 18 is fixed to the center of the roller base 19.

As shown in FIGS. 5 and 6, the double chain 13 is fixed to the roller base 19 by a chain fixing device 16 including a screw nut 16a and a screw receiving base 16b. A screw is pierced in the screw receiving base 16b fixedly mounted on the roller base 19, and a screw nut 16a may be screwed into the hole. The chain fixing devices 16 are provided at two places on both sides of the platform 4a.

The chain tension adjusting device 15 is a device that, when the platform 4a is fixed at a predetermined position to perform pile driving, tightens this device to tension the chain and prevent the platform 4a from moving. There are two locations on one side of the platform, for a total of four locations. Next, the forward traveling of the platform 4a of the present invention will be described.

(A) The roller base 19 at the rearmost part is removed, and the roller base 19 is moved to a predetermined position on the running girder 3 at the frontmost part. A Loosen the chain tension adjusting device 15. C. The double chain 13 is fixed to the roller base 19 by the left and right chain fixing devices 16.

(D) The operation panel 10 is operated to drive the forward hydraulic motor 11. (At this time, the reverse hydraulic motor 12 is configured to idle. Conversely, when the reverse hydraulic motor 12 is driven, the forward hydraulic motor 11 reversely rotates.) At this time, it is shown in FIG. As described above, for example, when the double chain 13 is fixed to the roller base 19 at the point a, the platform 4a corresponding to the chain length from the point a to the rear end of the double chain 13 (the rotating shaft 12a in FIG. 2) is used. Will move forward.

Therefore, the conventional relocation of the jack required several times to move the platform once, but now it can be implemented once. Therefore, the time required from 90 to 180 minutes in the past is 30 minutes. Could be shortened to For backward traveling of the platform 4a, reverse operation of forward traveling may be performed. In the embodiment of the present invention, the pile holder of the pile driving device is a hydraulic type, and since this hydraulic unit can be used as the oil source of the traveling device, no hydraulic valves can be added to the traveling device without adding valves. Although used, it may be configured electrically.

In addition, the traveling hydraulic motor used in the present invention can control fine forward movement, designated speed, fine forward movement (stop), and the like.

[0020]

[Effect of the device]

 The present invention has the following excellent effects. The work when moving the platform is simplified. The construction cycle time is greatly reduced. Since it is possible to reduce the work at sea, safety is improved.

[Brief description of drawings]

FIG. 1 is an explanatory view of an embodiment of the present invention, showing a plan view of a platform.

FIG. 2 shows a side view of FIG.

FIG. 3 shows a front cross-sectional view of FIG.

FIG. 4 is an explanatory diagram of a cross section of a roller used in this example.

FIG. 5 is an explanatory diagram of a roller base.

FIG. 6 is an explanatory diagram of a chain fixing device.

FIG. 7 is an explanatory diagram of a conventional device.

[Explanation of symbols]

 1a, 1b ... Pile 2 ... Support girder 3 ... Traveling girder 4, 4a ... Platform 5 ... Traveling device 6 ... Push jack 7 ... Crawler crane 8 ... Hammer 9 ... Hydraulic unit 10 ... Operation panel 11 ... Forward hydraulic motor 11a ... Rotation Axis 12 ... Reverse hydraulic motor 12a ... Rotating shaft 13 ... Double chain 14 ... Receiving roller 14 ... Chain tension adjusting device 16 ... Chain fixing device 16a ... Screw nut 16b ... Screw receiving stand 17 ... Guide roller 18 ... Traveling roller (tough roller) ) 19 ... Roller base 20 ... Traveling roller (tough roller) base fixing device 30 ... Clamping device a ... Point d ... Distance

Claims (1)

[Scope of utility model registration request] 1. A traveling device for a pile driving machine, wherein traveling girders of a pile driving machine are sequentially extended on a driving pile and a pile driving machine platform is moved forward and backward on the traveling girder to repeat pile driving. A roller that is detachably fixed to a predetermined position on the girder and that supports the pile driver platform; and an endless track made of a chain that is arranged on both side surfaces of the platform.
A chain fixing device for fixing each one point of the left and right chains to a predetermined point of the running girder and applying a reaction force to the running girder; and a drive device for driving the chain to move the platform forward and backward. A traveling device for a pile driver, which is characterized in that