JPS5830967B2 - Horizontal beam device for fixing backstays in pile driving machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transverse beam device for fixing a backstay in a pile driver, and more particularly to a transverse beam device for fixing a backstay suitable for performing back tilt driving in pile driving operations.

FIG. 1 shows a perspective view of a direct-coupled pile driver, which is a typical pile driver.

In the figure, the pile driver main body 1 consists of an upper rotating body and a crawler device 1B, and a front bracket 2 for attaching a leader is attached to the front part of the upper rotating body 1A.

A leader 3 equipped with an earth auger, a hammer, etc. (all not shown) necessary for earth auger work and pile driving work is mounted on the front bracket 2 in a freely movable manner, and the leader 3 is supported by a backstay 4. ing.

Further, a horizontal beam device 5 for fixing the pile driver 7 is attached to the rear part of one of the upper revolving bodies, which can extend to the side of the pile driving machine main body 1.

This transverse beam device 5, as shown in FIGS. 1 and 2,
It consists of a rectangular cylindrical base beam 5A fixed to the rear lower surface of the upper revolving body 1A, and a rectangular cylindrical horizontal beam 5B that is extendably inserted into the base beam 5A.

A cylinder device (hydraulic type) 7 is connected between the base beam 5A and the horizontal beam 5B to extend and contract the horizontal beam 5B.

In addition, the base end of the back stay 4 is fixed to the upper surface of the horizontal beam 5B via a pedestal 8, and the tip is provided with a structure to ensure the stability of the pile driver main body 1 during earth auger work and pile driving work. A jack 6 is attached.

In the pile driving machine equipped with the horizontal beam device 5, when performing earth auger work, the horizontal beam 5 of the horizontal beam device 5 is
B extends from the base beam 5A, i.e. the transverse beam 5B.
is extended to the side of the pile driver main body 1, and the jack 6 at the tip thereof and the front jacks (not shown) provided on both sides of the front bracket 2 are extended and grounded, and the pile is driven by the excavation reaction force of the earth auger. To prevent the machine body 1 from shaking.

In addition, when driving piles with a hammer, the front jack is grounded to ensure the stability of the pile driving machine body 1 when driving at a front slope, and the jack 6 is grounded when driving at a rear slope.
is grounded to ensure the stability of the pile driver main body 1.

Particularly when driving at a rear slope, the further the ground contact position of the rear jack 6 is located behind the pile driver main body 1, the more stable the pile driver main body 1 becomes.

When the pile driver is loaded on a trailer and transported after the pile driving work is completed, the backstay 4 and the pedestal 8 are removed from the horizontal beam 5B of the horizontal beam device 5, and then the horizontal beam 5B is inserted into the base beam 5A. Shrink it.

However, the conventional transverse beam device has the following drawbacks.

(1) Since the horizontal beam 5B is extendably inserted into the base beam 5A, play may occur in the insertion portion, causing the backstay 4 and leader 2 to swing.
It is not possible to perform stake driving with high precision.

(2) Since the direction in which the horizontal beam 5B extends is limited to one direction, it is impossible to attach the horizontal beam 5B or change the grounding position of the jack 6.

That is, it is impossible to position the rear jack 6 at a position that further increases the stability of the pile driving machine main body 1 during rear slope driving.

SUMMARY OF THE INVENTION An object of the present invention is to provide a transverse beam device for fixing a backstay that can eliminate the drawbacks of the prior art described above.

In order to achieve this object, the present invention includes a base beam fixed to the rear of the pile driver main body, and a horizontal beam installed on the base beam so as to be able to overhang to the side of the pile driver main body. In a horizontal beam device for fixing a backstay in a pile driving machine, which fixes the base of the backstay for supporting the ladder on the horizontal beam and has a rear jack attached to the tip, the base beam and the horizontal beam are fixed. Insert a connecting pin into the two to connect the two, and connect the horizontal beam.

The pile driver is rotatable toward the rear of the pile driver body around the connecting pin, and the horizontal beam and the base beam are each provided with a plurality of pin holes of the same diameter located on an arc around the connecting pin. , is characterized in that the horizontal beam can be fixed at any rotational position by inserting fixing pins into both pin holes.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 3 is a plan view showing a transverse beam device according to the present invention;
The figure is an exploded perspective view of the transverse beam device.

In the figure, the transverse beam device 15 as a whole includes a base beam 15A fixed to the rear lower surface of the upper revolving body 1A so as to cross this, and a transverse beam 15B (not shown) connected to both ends of the base beam 15A. (only one transverse beam is shown).

A flange F for attaching the rear jack 6 is provided at the tip of the horizontal beam 15B, and a bolt hole H for attaching the pedestal 8 provided at the base end of the backstay is provided on the upper surface of the tip.

The rear jack 6 is attached to the tip of the transverse beam 15B by joining the flange F and the flange F' of the rear jack 6 and fastening both flanges with bolts or the like.

Further, the base end of the backstay is fixed to the upper surface of the horizontal beam 15A by fixing the pedestal 8 through the bolt hole H thereof.

Furthermore, an eye end 15b and a hawk end 15c which is not fitted into the eye end 15b are formed at the connecting portion between the base beam 15A and the horizontal beam 15B.

That is, the eye end 15b is attached to the end face of the base beam 15A.
Hawk ends 15c are formed at the base ends of the horizontal beams 15B.

The fitting portion between the eye end 15b and the hawk end 15c is located inside the one-person side surface of the upper revolving body.

Pin holes a and a' having the same diameter are provided in the eye end 15b and the fork end 15c, respectively, at positions off the axis of the base beam 15A.

On the other hand, the eye end 15b has three pin holes located on an arc line drawn centering on the pin hole a, c
, d are provided at a constant pitch.

On the other hand, the hawk end 15c has two pin holes b/b located on an arc line drawn centering on the pin hole a'.
, a / are provided.

The pin holes c, d, b/, a/ are all formed with the same diameter, and when the horizontal beam 15B is located on the axis of the base beam 15A as shown in FIG. When the holes are drilled, b', d and d' coincide.

Furthermore, when the horizontal beam 15B is rotated around the pin holes a and a' with the pin holes a and a' aligned, the pin hole b' is aligned with the pin hole C depending on the rotation angle. , and can be aligned sequentially with the pin holes d.

Then, in a state where the eye end 15b and the hawk end 15c are fitted, the connecting pin P1 is inserted into the pin holes a and a'.
is inserted, the horizontal beam 15B is connected to the base beam 15A, and is rotatable to the rear side of one upper revolving body around the connecting pin P1.

Further, a fixing pin is removably inserted into another pin hole of the eye end 15b and a pin hole of the hawk end 15c that corresponds to the pin hole of the eye end 15b.
It is fixed at 5A.

For example, in the state shown in FIG. 3, fixing pins P2 and P3 are inserted into pin holes b' and pin holes d and d', respectively.

Next, the operation of the transverse beam device according to the present invention will be explained.

First, when earth auger work and piling work are performed, the horizontal beam device 15 is maintained in the state shown in FIG. 3.

That is, the horizontal beam 15B is positioned on the axis of the base beam 15A, and the fixing pins P2 and P3 are inserted into the pin holes b' and pin holes d and d', respectively, of the horizontal beam 15B.
is fixed to the base beam 15A.

After that, the lifter jack 6 at the tip of the horizontal beam 15B is extended and grounded.

In addition, especially when backward tilt driving is performed, the fixing pins P2 and P3 are pulled out from their respective pin holes, and the pin hole b' is connected to the pin hole C with the horizontal beam 15B centered on the connecting pin P1, as shown in FIG. Rotate the upper revolving structure toward the rear of one person until the position matches.

Of the fixing pins pulled out into pin holes b' and C,
One of the fixing pins, for example fixing pin P2, is inserted to fix the horizontal beam 15B in that position.

As a result, the pile driver jack 6 at the tip of the horizontal beam 15B is located behind one of the upper revolving structures, thereby increasing the stability of the pile driver main body.

In addition, the horizontal beam 15 directly fixes the base end of the backstay.
Since B is fixed to the base beam 15A via a pin, there is no play in the connection.

Therefore, since the backstay leader does not swing, highly accurate piling can be performed.

Next, when loading the pile driver on a trailer and transporting it, the fixing pin P2 is pulled out, and the horizontal beam 15B is connected so that the pin hole b' is aligned with the pin hole d with the connecting pin P1 as the center, as shown in FIG. Rotate backward until it matches.

When the pin hole b' coincides with the pin hole d, the horizontal beam 1
5B is located at a position approximately perpendicular to the axis of the base beam 15A, and is located at a position substantially perpendicular to the axis of the base beam 15A, and
It is located approximately on the same line as the side of A.

Then, fixing pins P2 are inserted into pin holes b' and d to fix the horizontal beam 15B.

Thereby, the entire lateral beam device 15 can be accommodated within the vehicle width restriction dimension.

In conventional transverse beam devices, both end surfaces of the base beam protrude from the sides of the upper revolving structure, so even if the transverse beam is retracted, the jack on the tip is placed in a considerably protruding position, which reduces the vehicle width. It may not fit within the limit dimensions.

In this case, the rear jack must be removed and reinstalled at the site, which requires a great deal of effort and time.

Therefore, the transverse beam device according to the present invention makes the above-mentioned operations unnecessary.

Further, according to this embodiment, a hydraulic cylinder and a hydraulic system for operating the hydraulic cylinder as in the prior art are not required, so that cost reduction can be achieved.

Furthermore, if the pile stay is fixed in the state shown in Fig. 6, that is, with the horizontal beam 15B fixed at right angles to the base beam 15A, it is possible to perform back slope driving with increased stability of the pile driver. It can also perform piling work in narrow spaces.

In the embodiment described above, the eye end 15b was formed on the base beam 15A, and the hawk end 15c was formed on the horizontal beam 15B, but the two may be reversed.

Furthermore, by increasing the number of pin holes for fixing pins provided in the eye end 15b and the fork end 15c, it is possible to further increase the number of changes in the rotational position of the transverse beam, that is, the grounding position of the rear jack.

As explained above, the present invention has the following effects.

(1) Since the horizontal beam that fixes the backstay does not wobble with respect to the base beam, the backstay and leader do not swing, allowing highly accurate piling.

(2) Since the horizontal beam on which the rear jack is mounted is rotatable with respect to the base beam, the rear jack can be positioned at a position that increases the stability of the pile driving machine body, especially when driving at a backward angle.

[Brief explanation of drawings]

Figure 1 is a perspective view of a direct-coupled pile driver, Figure 2 is a partially sectional rear view of a conventional cross beam device for fixing backstays,
FIG. 3 is a plan view showing the horizontal beam device for fixing the parking stay according to the present invention, FIG. 4 is an exploded perspective view of the horizontal beam device, and FIG. 5 shows the posture when backward tilting is performed. FIG. 6 is a plan view showing the attitude of the pile driver when it is being transported. 1...Pile driver main body, 1 person...Upper rotating body, 6...Rear jack, 15...Horizontal beam device, 15A...・Base beam, 15B・
...Horizontal beam, 15b... Eye end,
15c---Hawk end, a, a'b, b'
, c, d, d'...Pin hole, Pl...
・Connection pin, P2. P3...Fixing pin.

Claims (1)

[Claims] 1.Equipped with a base beam fixed to the rear of the pile driver main body, and a horizontal beam installed on the base beam so as to be able to protrude to the side of the pile driver main body, and a leader support bag attached to the horizontal beam. In a horizontal beam device for fixing a backstay in a pile driver, which fixes the base of the stay and has a rear jack attached to the tip, a connecting pin is inserted through the base beam and the horizontal beam to connect them, The horizontal beam can be rotated to the rear of the pile driver body around its connecting pin, and the horizontal beam and base beam are equipped with:
A plurality of pin holes of the same diameter are provided on an arc centered on the connecting pin, and by inserting fixing pins into both pin holes, the horizontal beam can be fixed at any rotational position. A horizontal beam device for fixing a backstay in a pile driving machine, characterized by comprising: