JPS6038757Y2 - pile driver - Google Patents

Description

[Detailed description of the invention] This invention relates to a pile driver, particularly a pile driver equipped with a folding league.

Pile drivers and boring machines are machines that have a league attached to the front of a crawler vehicle and are attached so that they can move up and down along the league to drive or press-fit piles and drill vertical holes. .

Since the league of this type of pile driver poses a problem when being transported or moved, the league is constructed so that it can be raised and leveled freely, and when moved, the league is laid down horizontally to reduce the vertical height. things are being done.

However, if we adopt a structure in which the league lies horizontally,
When the league is laid down horizontally, a new problem arises: the league protrudes long from the front and rear of the vehicle, necessitating a large transport space in the front and rear directions, and making it difficult to change direction.
The benefits of laying the league horizontally will be halved.

This idea was made in consideration of the above points, and the league was laid down horizontally and folded to shorten the length from front to back, requiring less transportation space during transportation, and moreover, it was possible to bend the league horizontally and shorten its length. The purpose is to provide a pile driver that can be used to perform pile driving using a working machine attached to this league.

The structure of this invention is to make the league bendable by connecting the upper league and the lower league with pins, and fix the upper end of the chain, which is freely arranged along the length of the league, to the upper end of the league. The lower end of the chain is removably attached to the lower part of the league, and a sprocket is provided to generate thrust by engaging and holding the chain in a working machine that is movably attached to the league, and connecting the work machine and the lower league. A removable connecting means is provided at the lower end, and a ceno guide is attached to each of the connecting ends of the upper and lower leagues, so that the league can be bent and straightened using the working machine as a drive source. .

This invention will be explained below based on the embodiments shown in the accompanying drawings.

As shown in the figure, the pile driver consists of a crawler-type vehicle 1, a boom 2 of a new structure that is attached to the front of the vehicle 1 so that it can be raised and lowered freely, and a part of the pile driver that is supported at the tip of the boom 2. A league 4 whose lower part is removably attached to the vehicle 1 by a cylinder 3, a roller chain 5 provided along the front surface of the league 4 in the longitudinal direction, and a front surface of the leader 4 along a guide 6. Work machine 7 that can move up and down freely
and a coupling means 8 for removably fixing the work implement 7 and the lower end of the leader 4.

As shown in FIG. 3, the leader 4 includes an upper leader 4a.
and a lower leader 4b, each of which is connected to a hinge 9, 10 by a pin 11 at a rear position opposite to the chino 5, and is bendable about the pin 11.

The connecting ends of the upper and lower leaders 4a and 4b can be fixed by bolting together flanges 12, 13 provided at each end, and the bolts are loosened beforehand when bending.

As shown in FIG. 3, the roller chain 5 has its upper end fixed to the upper end of the upper leader 4a using an anchor bracket 14 and a pin 15.

In addition, the lower end of the chino 5 is connected to the lower leader 4 as shown in FIG.
It is guided to the rear of the lower leader 4a along an idler sprocket 16 provided at the bottom of the lower leader 4a.

When the upper and lower leaders 4a and 4b are in the straightened state, the anchor bracket 17 and pin 1
8, a link 19, a pin 20, and other fixing means to be detachably fixed to the rear part of the lower leader 4b, and the tension is adjusted by a jack 21 that supports the sprocket 16.

Also, when bending the leader 4, remove the fixing means, add an auxiliary chain of appropriate length to the end, and fold the lower leader 4b.
It is left free for all.

The working machine 7 is located on a base 22 that moves up and down along the guide 6, and an auger motor 23, an idler sprocket 24.25 arranged above and below so as to mesh with the chino 5, and between both sprockets 24.25, It is formed by a drive sprocket 26 that supports the chino 5 in an enclosing manner, a hydraulic motor 27 and a speed reducer 28 that drive this sprocket 26.

As shown in FIG. 3, the chino 5, which is released from the leader 4, passes through the sprockets 24, 25, and 26 in an S-shape while sequentially meshing with the drive sprocket 26.
A thrust is generated by the rotation of , and the working machine 7 moves upward or downward.

The coupling means 8 for fixing the work machine 7 and the lower leader 4b is provided with arms 29 and 30 at the lower end of the base 22 of the work machine 7 and the lower end of the lower leader 4b, and connects the work machine to the position of the lower leader 4b. With 7 lowered, arm 29.30
are connected by a removable pin 31.

At the connecting end of the upper and lower leaders 4a and 4b, as shown in FIG. 3, there is a chino 5 that extends in an inclined manner from the upper leader 4a toward the lower leader 4b when both the leaders 4a and 4b are bent. Guides 32 and 33 are provided, respectively.

In the illustrated case, a fixed guide is used as the guide 32 of the upper leader 4a, and a sprocket is used as the guide 33 of the lower leader 4b.

The pile driver of this invention has the above-mentioned configuration, and during pile driving work, as shown in FIG. The auger, auger casing, stakes, etc. are set on the auger motor 23 of the working machine 7, which is held in the same position and positioned above the leader 4. When the auger motor 23 is started, the hydraulic motor 2 is simultaneously activated.
7 and drives the drive sprocket 26, the working machine 7 is lowered by the thrust generated between it and the chino 5, and the pile is press-fitted while excavating a vertical hole.

In this case, the lower end of the chino 5 is fixed to the lower leader 4b with fixing means.

Next, when transporting the pile driver, the boom 2 is bent and laid down on the vehicle 1, and the leader 4 is placed horizontally on the vehicle 1.

At this time, the work machine 7 moves to the lower leader 4b as shown in FIG.
It is lowered and fixed with the coupling means 8 (.

After that, separate the connecting bolts of the upper and lower leaders 4a and 4b,
With the end fixing means of the chino 5 removed and the auxiliary chino connected, the drive sprocket 26 is rotated in the downward movement direction by the hydraulic motor 27.

Since the drive sprocket 26 sends out the cheno 5, the lower leader 4b rotates downward around the pin 11.
As shown in FIGS. 2 and 3, the lower leader 4b is bent at the lower end of the upper leader 4a, and the leader 4
The front and back lengths of the front and back are shortened.

Next, in order to make the hanging lower leader 4b straight with respect to the upper league 4a, it is sufficient to drive the drive sprocket 26 to the upward movement side in the state shown in FIG. , lower league 4b is pin 1
Rotate upwards around 1, and in a horizontal state flanges 12 and 13
are joined.

After connecting the flanges 12 and 13 with bolts and nuts, remove the auxiliary chain 5a from the end of the chain 75 and fix this end to the lower league 4b with a fixing means to return to the state shown in FIG. After the league 4 is erected for pile driving, the coupling means 8 can be removed.

As described above, according to this invention, since it has the above-mentioned configuration, it has the following effects.

(1) The upper league and the lower league are connected via a bottle, and the lower league is removably connected to the working machine that moves up and down along the league using a sprocket that meshes with the chain 7. Folding can be performed using the work machine itself, and league folding can be achieved without using additional operating means such as a cylinder.

(2) When the league is folded in half, the working machine can be fixed to the lower league by the coupling means, so that stable folding can be achieved even when moving.

(3) The lower league can be bent with respect to the upper league which is laid down horizontally, and the shorter front and rear lengths of the league make it advantageous in terms of space for movement and transportation.

(4) Since a chino guide is provided at the connecting end of the upper and lower leagues, the chino bending portion is smoothly guided even when the league is folded.

(5) Since the end of the check 7 can be attached to and removed from the lower league, the length of the check 7 can be easily adjusted as the league bends and stretches.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the pile driver according to this invention in the pile driving state, Fig. 2 is a front view showing the league folded state in the same as above, Fig. 3 is an enlarged front view of the main parts of the above, and Fig. 4 is It is a front view showing the league straightening state in the same as the above. 4... League, 4a... Upper league,
4b... Lower league, 5... Che 7.
6... Guide, 7... Work equipment, 8...
...Coupling means, 11...Pin, 24.25
, 26...Sprocket, 32.33...
...Cheno guide.

Claims (1)

[Scope of utility model registration request] a league, a chain that is arranged freely along the leader, has an upper end fixed to the upper end of the league, and a lower end detachably fixed to the lower end of the league; a working machine equipped with a sprocket for elevating and lowering thrust that engages the ceno in an engaged state, and a coupling means that is provided between the lower end of the league and the working machine and detachably fixes the working machine to the lower end of the league. The league is formed of an upper league and a lower league which are bently connected with a pin at a position opposite to the chain, and a chain guide is provided at each of the connection side ends of both the upper and lower leagues. A pile driver characterized by: