JPS6319329A - Guider for vibro-driver of pile - Google Patents

Abstract

PURPOSE:To prevent the occurrence of excessive biased loading and rotation moment by raising operability by connecting a fixer fixed to a vibro-pile driver with a coupler coupled with a leader in a vertically movable manner by a buffer connector. CONSTITUTION:A fixer 5 is fixed to a vibro-pile driver 1, and a coupler 6 is coupled with a leader 2 in a vertically movable manner. A fitting plate 71 constituting a buffer connector 7 with a buffer material 70 of rubber plate, etc., is attached to the central fixing portion 50 and bothside fixing portions of the fixer 5 and the housing portion 60 of the coupler 6 by bolts 72, etc., and the fixer 6 and the coupler 6 are connected with the buffer connector 7. The driver 1 is vertically moved in relation to the leader 2 only by operating a main wire 41, and the force components to gravity force of the driver 1, the fixer 5, and the coupler 6 and the vertical forced vibration of the driver 1 can be absorbed by the buffering action of the buffer connector 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a guide device for a vibratory pile driver that guides a vibratory pile driver main body to a leader so as to be movable up and down.

[Conventional technology]

Below, the conventional guide device for a vibrating pile driver is shown in Figures 3 to 5.
This will be explained with reference to the figures.

In the figure, 1 is a vibratory pile driver main body, and this vibratory pile driver main body 1 has a motor 11 mounted on the top surface of an exciter 10,
The rotating shaft of the motor 11 and the eccentric shaft of the exciter 10 are linked through a power transmission mechanism (2) such as a pulley or a belt. (by driving the above-mentioned motor 11) power transmission mechanism 1
2, the eccentric shaft rotates, and forced vibration in the vertical direction is generated in the vibrator 10.

A rotating device 13 is installed on the lower surface of the above-described exciter 10, and a chuck 14 is installed on the lower surface of the rotating device 13. A hanger 16 is attached to the exciter 10 via a shock absorber [15]. 2 on the side of the exciter 10 facing the rider 2, which will be described later.
Two guide arms 17 are provided at predetermined intervals and protrude in the vertical direction.

Reference numeral 2 denotes a leader supported on a work vehicle (not shown). Plant them one above the other.

Reference numeral 3 denotes a guide member interposed between the vibratory pile driver main body 1 and the leader 2, and this guide member 3 includes a main body 30, guide surfaces 31 provided vertically on both left and right sides of the main body 30,
4 provided on the top, bottom, left and right of the surface of the main body 30 facing the reader 2
It consists of two guide slashes 32 and a non-gauge provided on the upper surface of the main body 30.

Thus, in the guide group R for a vibrating pile driver shown in FIGS. 3 and 4 (hereinafter simply referred to as the former), the guide slash 32 of the guide member 3 is engaged with the guide pipe 20 of the leader 2 so as to be able to move up and down. Then, a sub-wire from a sub-winch (not shown) of the work vehicle is connected to the hanger of the guide member 3, and the guide member 3 is suspended from the leader 2 so as to be movable up and down. Next, the guide arm 17 of the vibratory pile driver main body 1 is engaged with the guide surface 31 of the guide member 3 described above, and the main winch (not shown) of the work vehicle is attached to the hanger 16 of the vibratory pile driver main body 1. The vibrating pile driver main body 1 is suspended from the leader 2 via the guide member 3 so as to be movable up and down.

The guide device for a vibrating pile driver (hereinafter referred to as the latter) shown in FIG. and the hanger end of the guide member 3 are connected by a connecting wire 40, and the guide pipe of the leader 2 and the guide slash 32 of the guide member 3 are engaged so as to be able to move up and down, and the vibrating pile driver main body 1 is... A main wire 41 from a main winch of a working vehicle is connected to the winch 16, and the vibratory pile driver main body 1 is suspended from the leader 2 via the guide member 3 so as to be movable up and down.

Next, the pile driving operation will be explained. First, the vibrating pile driver main body 1 is raised, and then a pile (not shown) is set in and held by the chuck 14.

Then, the motor 11 is driven to generate forced vibration in the vertical direction in the exciter IO, and the forced vibration in the vertical direction is transmitted to the pile via the rotating device 13 and the chuck 14. In the former case, the main wire 41 and the sub wire 43 are fed out in synchronization, and the vibrating pile driver main body 1
and the guide member 3 is lowered in synchronization with this. In the latter case, the main wire is let out, the vibrating pile driver main body 1 and the guide member 3 are lowered, and the pile is driven into the ground.

This guide device for a vibrating pile driver has the vibrating pile driver main body 1 mounted on the leader 2 so as to be movable up and down via the guide member 3. Vibrations from the exciter 10 are transmitted to the leader 2), and problems such as piles not being driven vertically or at a predetermined inclination angle do not occur.

[Problem that the invention seeks to solve]

However, in the former case, the main wire 41 suspends the vibrating pile driver main body 1, the sub wire 43 suspends the guide member 3, and the main wire 41 and the sub wire 43 are fed out in synchronization, thereby creating a vibrating pile. Since the driving machine body 1 and the guide member 3 are lowered in synchronization, it is necessary for the operator to operate the main winch and the sub winch at the same time while visually checking the pile insertion condition. The nature is extremely complicated.

In addition, the latter is connected to the arm 1 from the hanger 16 of the vibrating pile driver main body 1.
8 is provided protruding from the leader 2 side, and the guide member 3 is suspended from the tip of the arm 18 by a connecting wire 40, so that the horizontal component of the gravity of the guide member 3 acting in the vertical direction is This acts on the arm 18, which acts as an uneven load on the receiving portion of the support shaft 19 of the shock absorber 15, causing uneven wear on the receiving portion of the support shaft 19.

On the other hand, a horizontal component of the gravity of the vibratory pile driver main body 1 acting in the vertical direction acts on the arm 18, which acts on the leader 2 as a rotational moment via the guide member 3,
There is a problem in that the higher the vibratory pile driver body 1 is located, the greater the rotational moment acting on the leader 2.

SUMMARY OF THE INVENTION An object of the present invention is to provide a guide device for a vibratory pile driver that does not require complicated operation and can suppress the generation of large unbalanced loads and rotational moments.

[Failure to solve the problem]

The present invention includes a fixed body fixed to a vibratory pile driver main body, an engaging body engaged with a leader so as to be movable up and down, and a buffer connecting body interposed between the fixed body and the engaging body to connect them. It is characterized by having the following.

[Effect]

The present invention provides a main wire for suspending the vibratory pile driver by connecting a fixed body fixed to the vibratory pile driver body and an engaging body movably engaged with the leader with a buffer connecting body. The main body of the vibrating pile driver can be raised and lowered relative to the leader simply by operating the .

In addition, due to the buffering action of the buffer connection body, it is possible to absorb the component force of the vibratory pile driver main body and fixed body against gravity, the component force against gravity of the engaging body, and the forced vibration of the vibratory pile driver main body in the vertical direction. can.

〔Example〕

EMBODIMENT OF THE INVENTION Hereinafter, one embodiment of the guide device for a vibrating pile driver of the present invention will be described with reference to FIGS. 1 and 2.

In the figure, the same reference numerals as in FIGS. 3 to 5 indicate the same parts.

Note that illustration of the rotating device and chuck in the figure is omitted. In the figure, reference numeral 21 denotes guide rails installed vertically on the vibrating pile driver main body 1 side on both left and right sides of the leader 2.

Reference numeral 5 denotes a fixed body fixed to the surface facing the leader 2 of the vibratory pile driver main body 1, and this fixed body 5 has left and right sections projecting in the same direction from both ends between the central fixed parts and between the central fixed parts. The fixing portions 51, 51 on both sides form a U-shape when viewed from above. These central fixing part (material) and left and right fixing parts 51, 51 are constructed by welding or the like using a vertical plate, a horizontal plate, and a rib. The surfaces opposite to the protruding direction of the left and right fixing portions 51 and 51 at both ends between the central fixing portions thus formed are fixed to the surface facing the leader 2 of the vibratory pile driver body 1 with bolts 52 or the like.

Reference numeral 6 denotes an engaging body that engages with the leader 2 so as to be able to move up and down, and this engaging body 6 has a U-shaped planar shape that is slightly smaller than the space of the fixed body 5 and has a height that is equal to the height of the fixed body 5. A slightly higher storage portion 60 and retaining portions 61.6 each having a U-shaped planar shape provided vertically at both ends of the surface of the storage portion 60 facing the leader 2.
Consists of 1. These storage portions 60 and engaging portions 61, 6
1 is a vertical board and a horizontal board.

The ribs are constructed by welding or the like. The storage portion 60 thus formed is stored in the space of the fixed body 5, and the engaging portion 61,
61 is engaged with the guide rail 21.21 of the leader 2 so as to be able to move up and down.

Reference numeral 7 denotes a buffer connecting body that connects the above-mentioned fixed body 5 and engaging body 6, and this buffer connecting body 7 has a buffer member 70 made of a cylindrical rubber plate, etc. The mounting plate 71 has a slightly larger square shape and is fixed to both ends of the buffer member 70 with adhesive or the like. The above-described p-buffer member 70 has an amplitude value of the exciter 10 within the range of its allowable shear core force. Furthermore, this buffer member 70 may be a spring or the like other than a rubber plate. Thus, the four corners of the facing surface between the center fixing part of the fixing body 5 and the storage part 60 of the engaging body 6,
Furthermore, the left and right fixing parts 51, 51 of the fixing body 5 and the engaging body 6
Buffer connectors 7 are installed at a total of 8 locations above and below the surface facing the storage section 60.
Install. That is, the mounting plate 71 of the buffer coupling body 7 is attached between the central fixed part of the fixed body 5 and the left and right fixed parts 51,51.
and the accommodating portion 60 of the engaging body 6 using bolts 72 or the like, and the fixed body 5 and the engaging body 6 are connected by the buffer connecting body 7).

Reference numeral 8 denotes a horizontal stopper, and this stopper 8 includes a first stopper member 81 having a U-shaped planar shape fixed vertically to left and right fixing portions 51 and 51 of the fixed body 5, and a first stopper member 81 having a U-shaped planar shape, and a housing for the engaging body 6. The second stopper member 82 is housed in the space of the first stopper member 81 and fixed vertically to the part 60. This horizontal stopper 8 is provided at a position where the shear core force of the buffer member 70 of the buffer coupling body 7 reaches its maximum value with respect to the mutual horizontal movement of the fixed body 5 and the engaging body 6. Stopper member 81 and second stopper member 82
are brought into contact with each other, restricting mutual horizontal movement of the fixed body 5 and the engaging body 6, and preventing shearing of the buffer section of the buffer coupling body 7.

, 9 are vertical stoppers, and this stopper 9
The rubber members are connected to the fixing portions 51 on both left and right sides of the fixing body 5.
-51, are mounted with bolts 90 or the like so as to face the upper and lower horizontal plates of the storage section 60 of the engaging body 6. This vertical stopper 9 prevents the buffer member 7 of the buffer coupling body 7 from moving between the fixed body 5 and the engaging body 6 in the vertical direction.
Just before the zero shear core force reaches its maximum value, the engaging body 6 comes into contact with the upper and lower horizontal plates between the housing parts, restricting the vertical movement of the fixed body 5 and the engaging body 6, and This prevents the buffer member 70 from being sheared, and also prevents the upper horizontal plate of the engaging body 6 from coming into contact with the stopper 9 and causing the engaging body 6 to fall in the event that the buffer member 70 is sheared. It can be prevented.

The guide device for a vibrating pile driver of the present invention in this embodiment has the above-mentioned configuration, and the pile driving operation will be described below.

First, the vibrating pile driver main body 1 is raised, and then the pile is driven in and held by the chuck. Then motor 11
is driven to generate forced vibration in the vertical direction in the vibrator IO, and the forced vibration in the vertical direction is applied to the pile via the rotating device and the chuck. And main wire 4
1, and remove the vibrating pile driver body 1. Fixed body 5. Then, the engaging body 6 is lowered via the buffer coupling body 7, and the pile is driven into the ground.

At this time, only the main wire 41 is fed out and the vibrating pile driver main body 1. Fixed body 5. Since the engaging body 6 is lowered via the buffer connecting body 7, the operability is better compared to the conventional guide device for a vibrating pile driver, which feeds out the main wire 41 and the sub-wire in synchronization.

In addition, since the fixed body 5 fixed to the vibratory pile driver main body 1 and the engaging body 6 engaged with the leader 2 are connected by the buffer coupling body 7, the buffer member 70 of the buffer coupling body 7 is elastically cushioned. As a result, it is possible to absorb the component force of the vibratory pile driver main body 1 and the fixed body 5 against gravity, the component force of the engaging body 6 against gravity, and the forced vibration of the vibratory pile driver main body 1 in the vertical direction. That is, in response to the load in the A direction in FIG. A buffer coupling body (hereinafter referred to as a second buffer coupling body) 7, which is received by the left and right fixing parts 51, 51 and the storage part ω, receives the shock by compression and tension. In addition, for the load in the mouth direction, the first
The buffer connector 7 is subjected to compression and tension, and the second buffer connector 7 is subjected to shear stress. Furthermore, in response to a load in one vertical direction, the first buffer coupling body 7 and the second buffer coupling body 7 receive shear stress. As a result, it is possible to absorb the unbalanced load generated in the chamber bearing of the shock absorber of the vibratory pile driver body 1, the rotational moment generated in the leader 2, and the vibration transmitted from the vibratory pile driver body 1 to the leader 2. can.

In addition, in the above-mentioned embodiment, the stopper 9 for the vertical direction
Although it is made of a comb member II'i, a spring or the like may be used instead.

〔Effect of the invention〕

As is clear from the above, the guide device for a vibratory pile driver of the present invention connects a nine-piece fixed body fixed to the vibratory pile driver main body and an engaging body that is movably engaged with a leader and connected by a buffer connecting body. Therefore, the main body of the vibrating pile driver can be raised and lowered relative to the leader simply by operating the main wire suspending the vibrating pile driver. In addition, due to the buffering action of the buffer connection body, it is possible to absorb the component force of the vibratory pile driver main body and fixed body against gravity, the component force against gravity of the engaging body, and the forced vibration of the vibratory pile driver main body in the vertical direction. can. Therefore, generation of a large unbalanced load and rotational moment can be suppressed.

[Brief explanation of the drawing]

FIG. 1 is a partial side view showing an embodiment of a guide device for a vibrating pile driver according to the present invention, and FIG. 2 is a view taken along the arrow in FIG. 1. FIG. 3 is a side view showing a conventional guide device for a vibrating pile driver suspended by a main wire and a sub-wire, and FIG. 4 is a view taken in the direction of the arrow ■ in FIG. FIG. 5 is a side view showing a conventional guide device for a vibrating pile driver suspended by a main wire and an arm. DESCRIPTION OF SYMBOLS 1... Vibrating pile driver main body, 2... Leader, 5... Fixed body, 6... Engagement body, 7... Buffer connection body.

Claims (1)

[Claims] 1. A guide device for a vibratory pile driver that guides the vibratory pile driver main body to a leader so as to be movable up and down, comprising: a fixed body fixed to the vibratory pile driver body; an engaging body that is movably engaged with the leader;
A guide device for a vibratory pile driver, comprising a buffer connecting body interposed between the fixed body and the engaging body to connect them.