JPH0674586B2 - Rotational reaction force removing device for casing driver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a casing driver for press-fitting and withdrawing large-diameter steel pipe piles or steel pipes used for cast-in-place pile construction which is a foundation work for construction and civil engineering. The present invention relates to a reaction force removing device.

(Prior Art) Conventionally, in the case of press-fitting a steel pipe with a casing driver, if the casing is chucked with a band and a thrust cylinder gives a pushing force equal to or greater than the weight of the casing driver,
When the casing driver floats up, and when the casing is rotated by a hydraulic motor or the casing is rotated alternately left and right by the rocking cylinder (that is, it is rocked), the rotation reaction force causes the casing driver to move in the direction opposite to the direction of rotation of the casing. It either spins or is rocked to the left or right. Therefore, it is necessary to take a press-fitting reaction force and a rotation reaction force of the casing. The press-fit reaction force can be sufficiently dealt with by mounting a weight around the casing driver main body, but the rotation reaction force needs to be applied at a position away from the center of rotation.

As a device for taking a rotational reaction force, the present applicant (1) places a digging excavator in a casing on a pedestal connected to a casing driver body to take a rotational reaction force, and the pedestal is made of concrete. What was constructed so that it could be used as a climbing platform for mixer trucks
(2) No. 61-206740) (2) A beam connected to a casing driver is applied to the running crawler section of a medium-duty excavator to take a rotational reaction force (Application No. 63-1949). ), And an application device thereof, in which a hollow excavator is placed on a pedestal attached to the tip of a beam connected to a casing driver to take a rotational reaction force (Application No. 63-96252, actual application). Wishaku 63-16722
No. 7) is proposed.

The device of the above (1) is a direction perpendicular to the longitudinal direction of the pedestal (road width direction) especially in the machine installation space, such as when constructing a foundation stake for a road bridge by opening one lane on a road or the like.
This has the advantage that it can be used in cases where you do not want to take too much space. Further, the one disclosed in Japanese Utility Model Publication No. 61-206740 has an advantage that the gantry can be used as a climbing hill for guiding the concrete mixer truck at the time of constructing the pile.

In the device of (2) above, since the beam connected to the casing driver body has a narrow width to the left and right, when installing only the beam, construct piles at a position close to the wall surface such as an adjacent building or cliff. Has the advantage of enabling
Also, if the beam is installed on a beam, it is not possible to secure the runway part of the concrete mixer truck even if the frame is attached, so the machine can be installed on a narrow site where the length of the frame is short in the longitudinal direction. Suitable for If a concrete mixer truck cannot be used, use a concrete pump truck with a front side equipped with a concrete supply pipe that can supply ready-mixed concrete to high places.

(Problems to be Solved by the Invention) However, according to the above-described conventional configuration, it is necessary to have a plurality of types of rotary reaction force removing devices in order to cope with the wide or narrow work site, and the initial cost increases. Was causing problems.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a rotation reaction force removing device for a casing driver, which is capable of coping with various work sites.

(Means for Solving Problems) In order to achieve the above object, the present invention provides a casing driver main body, a base frame connected to a side surface of the main body,
A beam that extends substantially horizontally from the base frame and is attached to the base frame, a base frame that is rotatably attached to the tip of the beam over a predetermined range, and is removably pinned to the base frame and the base frame. And a tilting device that lifts the main body side of the gantry, or at least one of a widening device that adjusts an interval between the left and right side frames forming the gantry.

(Operation) Since the present invention has the above structure, in the case of constructing a pile at a position close to a wall or the like, the mount is removed from the base frame or the like,
Apply the base frame to the crawler of the medium excavator and take the rotational reaction force. When using the lane on one side of the road, connect the platform to the base framing and widen the platform before use. At a site where a concrete mixer truck can be used, a pedestal having a tilting device is connected to a base frame or the like, and the casing driver body side of the pedestal is raised to be used as a climbing platform.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 are a plan view and a side view, respectively, showing an embodiment of a reaction force removing device according to the present invention, and FIG. 3 is a side view showing a ready-mixed concrete supplying work state. 4 and 5
The drawings are a plan view and a side view showing a working state in each narrow site in the embodiment. FIG. 6 is a plan view showing a state in which a medium excavator is placed on the pedestal in the embodiment to perform work.

1 to 6, reference numeral 1 is a casing driver main body, and the outline of the operation will be described. The casing 2 is inserted into a casing holding device provided on the main body 1 so as to be vertically movable and chucked by a tightening band. The thrust cylinder provided in the main body 1 pushes the casing 2 into the ground while rotating or swinging the casing 2 together with the casing holding device by a hydraulic device. Also, casing 2
The earth and sand inside is excavated by excavating with a bucket of an earth drill as a medium excavator or a hammer scrub bucket. The casing 2 is pulled out by extending the thrust cylinder and pushing up the casing 2 while rotating or rocking the casing holding device while the casing 2 is chucked by the band.

Next, the rotational reaction force removing device according to the present invention will be described.
First, parts such as the base frame 3 and the beam 4 will be described with reference to FIGS. 4 and 5. The base frame 3 is
It has a width substantially equal to the width W of the main body 1 and is detachably connected to the left and right sides of the main body 1 by two upper and lower pins 5, respectively. At the center of the base frame 3, a cylindrical portion 3a for mounting the beam 4 is provided in a protruding manner, and pin holes 3b and 3c are provided on both sides of the portion where the cylindrical portion 3a is formed with a space in the width direction.

The beam 4 has a front portion fitted in the cylindrical portion 3a and is connected by a pin 6 so as to extend horizontally. At the rear end of the beam 4, a beam A of FIG. 4, FIG. 5 and FIG. As shown in FIG. 7 which is a cross-sectional view taken along the line A, the base frame 9 is attached by a pin 7 and a spherical bearing 8 so as to be rotatable over a predetermined range, and a parallel plate-shaped member is provided on the rear portion of the base frame 9. The pedestal mounting portion 9a is provided so as to project to the left, and pin holes 9b are formed on the left and right of the pedestal mounting portion 9a.

Next, the vehicle mount 10 that is detachably attached to the base frame 3 and the base frame 9 will be described. As shown in FIG. 1 to FIG. 3 and FIG.
The crawler 12 (see FIG. 6) and the concrete mixer truck 13 (see FIG. 3) of the earth digging machine 11 such as the earth drill.
It is mounted between a pair of side frames 14 and 14 on which is mounted and both side frames 14 and 14, and as shown in FIG. 8 and FIG. Guide beams 15 and 15 in the form of two front and rear square tubes that are fitted to the side frames 14 and serve as guides when adjusting the spacing between the side frames 14.
A pair of left and right vertical frames 17 and 17 welded between the guide beams 15 and 15, one end is connected to the side frame 14 by a pin 18, and the other end is connected to the vertical frame 17 by a pin 19, A pair of left and right widening cylinders 20 composed of hydraulic cylinders that adjust the distance between the side frames 14 and 14 in accordance with the distance between the crawlers 12 and 12 of the medium excavator 11;
Shafts 22 and 22 that are provided at the rear end of the member 14 so as to project inwardly by welding or the like and that connect the inner end to the base frame 9 in a detachable manner, and the side frames 14 around the shafts 22 and 22. , 14 rotatably connected to the rear of the side frame
It is composed of tail frames 23, 23 having an inclined surface for vehicle riding which forms a part of 14. As shown in FIG. 7, the inner end of the shaft 22 is inserted in the form of a fork between the mounting portions 9a, 9a to form a pin.
The fork portion is configured to be metal-touched so as to be connected by 21 and not swingable around the pin 21.

The guide beam 15 is a sectional view taken along line DD of FIG.
As shown in FIG. 10, the central portion is bent in an inverted U shape, and the bent portion 15b is covered with the beam 4 via a gap, and the beam 4 is sandwiched by the vertical frames 17 and 17. , On both sides of the beam 4 via a gap.

As shown in FIG. 8 (A) and FIG. 9, expansion beams 15a are foldably connected to both ends of each guide beam 15,15. That is, a fork-shaped connecting plate 25 having elongated holes 24 is integrally provided at both ends of the guide beam 15 so as to project in the longitudinal direction, while the connecting portion of the expansion beam 15a into which the connecting plate 25 is inserted is open on both side surfaces. As shown in FIG. 8 (B), the pin holes 26 and 27 are provided at intervals substantially equal to the length of the long holes 24 of the connecting plate 25. Then, as shown in FIG. 6 and FIG. 9, the expansion beam 15a is brought into contact with the end portion of the guide beam 15, and the pin holes 26, 2 of each expansion beam 15a are contacted.
By inserting pins 28 and 29 into both ends of 7 and the long hole 24, the guide beam 15 and the auxiliary beam 15a are connected in a straight line so as not to be bendable.

On the other hand, as shown in FIG. 1 and FIG. 8 (A), when the distance between the side frames 14, 14 is minimum, the outer pin 29 appears on the outer side and can be pulled out, so that the expansion beam 15a When the extension beam 15a is pulled, the extension beam 15a slides with respect to the connecting plate 25, and the extension beam 15a slides along the oblong hole 24 until it comes into contact with the inner end of the oblong hole 24, and the extension beam 15a moves along the guide beam 15 The expansion beam 15a can be turned around the pin 28, and as shown in FIG. 9, the pin hole 31 provided in the stop plate 30 attached to the outer surface of the side frame 14 and the pin of the expansion beam 15a The positions of the holes 27 match and these pin holes 3
The expansion beam 15a is configured to be fixed to the outer surface of the side frame 14 by inserting the pins 29 into the 1, 27.

As shown in FIG. 11, FIG. 3 and FIG. 11 which is an enlarged view of the BB section of FIG. 2, each side frame 14 has a tilting device 32 incorporated therein. The tilting device 32 includes a base frame 34 connected to a pin hole 3b or 3c of the base frame 3 by a pin 33 and one end of each of the base frames 34.
Links 37 and 38 connected to the front end of the side frame 14 by the pins 35 and 36, and a hydraulic cylinder 42 whose head is connected to the rear end of the base frame 34 and the middle portion of the side frame 14 by pins 40 and 41. , 43 and an intermediate pin 44 in which the piston rods of the respective hydraulic cylinders 42, 43 and the tips of the links 37, 38 are commonly connected.
When 42 and 43 are contracted, they are linked as shown in Fig. 2.
When 37, 38 are folded and the side frame 14 is fully landed, when the hydraulic cylinders 42, 43 are extended,
As shown in the figure, the links 37 and 38 open in a dogleg shape so as to gradually approach a straight line, and the side of the casing driver body 1 of the side frame 14 rises to form an uphill platform of the concrete mixer truck 13.

As shown in FIG. 3, at the front end of the side frame 14, a car stop 45 for preventing the concrete mixer truck 13 from overshooting.
Is attached by a removable pin 46, and by removing the pin 46, the car stop 45 can be removed. Further, the car stop 45 is fixed only by one pin 46, and even when the tire of the concrete mixer truck 13 is placed on the car stop 45, the car stop 45 comes into contact with the side frame 14 by a surface touch and is stably supported. Is configured as
When the side frame 14 is lowered, even if the car stop 45 comes into contact with the base frame 3, the car stop 45 is rotated from the solid line state to the two-dot chain line posture so that the car stop 45 is not damaged.

With such a configuration, the fourth work mode is one work mode.
As shown in FIG. 5 and FIG. 5, without attaching the gantry 10 to the base frame 9 or the base frame 3, the side surface of the base frame 9 is brought into contact with the side surface of the crawler 12 of the excavator 11 via the batten 47 to prevent the rotation of the rotary frame. You can take power. Such a work mode is suitable for work at a site where obstacles such as the wall surface 48 are nearby, as shown in FIG. At this time, because there is no climbing platform for the concrete mixer truck 13 when the piles are laid,
The concrete pump truck is used, or a simple climbing platform is placed in a direction different by 90 degrees or 180 degrees with respect to the rotation reaction force removing device.

Here, in order to bring the casing driver body 1 horizontal,
Jacking cylinders provided at four corners of the main body 1
Even if 1a is activated, the beam 4 and the base frame 9
Since the spherical bearing 8 and the pin 7 are connected to each other, the rotational reaction force can be supported without being evenly hit against the crawler 12 of the intermediate excavator 11. If beams 4 with different lengths are prepared, if the site is narrower,
By replacing the beam 4 with a shorter one, a rotational reaction force can be taken. It is also possible to use a telescopic type beam 4.

In a normal excavation work, a pedestal 10 is attached and used as shown in FIGS. That is, the widening cylinder 20 is contracted, the space between the left and right side frames 14, 14 is set to the minimum space, and the base frame 34 below the side frame 14 is inserted into the pin hole 3b inside the base frame 3 to attach the pin 33. The end of the shaft 22 fixed to the side frame 14 is connected to the base frame 9 at the end of the beam 4 by the pin 21, and the bent portion 15b at the center of the guide beam 15 is set on the beam 4. Then, as shown in FIG. 1, the side digging excavator 11 is attached to the side frame 14 on one side through the batten 47.
Apply it to the side of the crawler 12 and take the rotational reaction force. In this case, the rotational reaction force is a path formed by the base frame 3, the beam 4, the base frame 9, the shaft 22, and the side frame 14, and the pin 33, the base frame 34, and the side frame 14.
Is transmitted to the medium excavator 11 through a route consisting of. Also in this work mode, the piles can be constructed in the vicinity of the wall surface 48 or the like.

Since the mounting pin 21 of the shaft 22 is eccentric with respect to the mounting pin 7 of the base frame 9 and rotates about the pin 7, the relative swing width between the base frame 9 and the beam 4 is suppressed to be small. It Further, the connecting portion between the base frame 3 and the base frame 34 of the side frame 14 is also connected by a pin 33 with a considerable margin, and also between the bent portion 15a of the beam 4 and the guide beam 15 and the beam 4. Since the gap is provided, even if the jacking cylinder 1a of the casing driver body 1 is operated, an unreasonable force is not applied to the crawler 12.

As shown in Fig. 3, mount the concrete mixer truck 13
When climbing to 10, the hydraulic cylinder 42,
The side frame 14 is tilted by extending 43. Here, in the maximum extension state of the hydraulic cylinders 42 and 43, the dog-legged shape formed by the links 37 and 38 is prevented from becoming a straight line.
A part of the own weight of 13, the side frame 14, the guide beam 15, etc. is distributed to the lower link 37 and the hydraulic cylinder 42 via the intermediate pin 44, so that the entire surface of the base frame 34 is pressed against the ground and brought into close contact. You can In addition, when the concrete mixer truck 13 is mounted on the inclined side frame 14 as described above, each side frame 14
The position of the pin 44 is determined so that the center of gravity of the weight of the concrete mixer truck 13 is closer to the tail frame 23 side than the intermediate pin 44.

In the case of the work mode in which the concrete mixer truck 13 is mounted, as shown in FIGS. 1 and 8 (A), since the expansion beam 15a is bent along the outer surface of the side frame 14, it is possible to perform work or side work. When the frame 14 tilts, the expansion beam 15a is not obstructive and safe, and the guide frame 15 is provided between the left and right side frames 14, 14.
And the bent portion 15b is sandwiched between the side frames 14 and 14 and the expansion beam 15a is bent to prevent the side frames 14 and 14 from separating from each other. , It is safe because it forms a stable climbing platform as a whole.

As shown in FIG. 6, for example, using a single line on one side of the road,
Under a construction condition in which the medium excavator 11 is mounted on the gantry 10 for excavation work, the expansion beam 15a is bent to the side frame 14 from a state where the expansion beam 15a is bent as shown in FIG. 8 (A). If you pull out the pin 29 that is fixed and push the expansion beam 15a by turning 90 degrees around the pin 28,
The pin 28 moves along the slot 24, and the pin is attached to the inner end of the slot 24.
When the 28 reaches, the hole 2 of the expansion beam 15a
7 match, and by inserting a pin 29 into the outer ends of the hole 27 and the long hole 24, the expansion beam 15a is connected to the guide beam 15 in a straight line without being bendable. Further, the pin 21 connecting the shaft 22 integrated with the side frame 14 and the base frame 9 is removed, and further the pin 33 connecting the base frame 34 and the base frame 3 under the side frame 14 is removed. Then, when the widening cylinder 20 is fully extended, the side frames 14 and 14 are spread laterally by using the guide beam 15 and the extension beam 15a as guides. In this state, the pin 33 is inserted into the outer pin hole 3c provided in the base frame 3 and the pin hole of the base frame 34 to fix the base frame 34 to the base frame 3. Further, in order to fill the gap between the inner end of the shaft 22 fixed to the rear end of the side frame 14 and the base frame 9, as shown in FIG. 6, the expansion shaft 50 is inserted and the pins 21, 51 are inserted. Connect by. And the side digging machine 11
The casing driver 14 is mounted on the base plate 14 to increase the frictional force between the side frame 14 and the ground to support the rotational reaction force of the casing driver body 1. At this time, since the left and right side frames 14, 14 are connected by the shaft 22, the expansion shaft 50, the widening cylinder 20, and the pin 33, the casing driver body 1 may perform a swinging operation and may be swung left and right. However, since the left and right side frames 14, 14 do not open to each other,
It is safe because the 11 does not come off the side frame 14.

In the above embodiment, the tilting device 32 is attached to the side frame 14.
, And a widening device having the widening cylinder 20 together is shown, but even in the case of having only the tilting device 32 or only the widening device, although the applicable range is reduced from the above embodiment, the applicable range than the conventional. A wide rotation reaction force removing device is realized. The beam 4 may be attached to the base frame 3 inseparably by welding or the like. Further, a structure in which the frame 10 is pinned to the beam 4 can also be adopted.

(Effect of the invention) According to claim 1, since the gantry having the tilting device is detachably attached to the base frame and the base frame at the tip of the beam, the work can be performed in a narrow construction site close to a wall surface or the like. In this case, remove the gantry and apply the base frame at the tip of the beam to the crawler of the medium excavator to obtain the rotational reaction force, and connect the gantry to the base frame etc. and apply the side frame to the crawler to apply the rotational reaction force. The work mode can be selectively adopted, and the work can be performed by mounting the concrete mixer truck on the gantry, which does not require the beam and the gantry having the tilting device to be separately provided, which is economical. In addition, since the beam and the pedestal are compactly integrated, it is advantageous in storage and transportation.

According to the second aspect, since the mount having the widening device can be detachably attached to the base frame at the tip of the beam by the pin, when the work is performed in a narrow construction site close to the wall surface or the like, the mount is removed and the inside digging is performed. A work mode in which a base frame at the tip of the beam is applied to the crawler of an excavator to take a rotational reaction force, and a work mode in which a pedestal is connected to a base frame or the like and a medium-digging excavator is mounted on the frame to take a rotational reaction force Can be selectively adopted. Therefore, unlike the conventional case, it is not necessary to separately hold the beam and the gantry having the widening device.
It is economical as well as the beam and the mount are compactly integrated, which is advantageous in storage and transportation.

According to the third aspect of the present invention, the frame having the tilting device and the widening device is detachably attached to the base frame and the base frame at the tip of the beam. Therefore, when working on a narrow construction site near a wall surface or the like, Remove the frame and apply the base frame at the tip of the beam to the crawler of the medium excavator to take the rotational reaction force, and connect the frame to the base frame etc. and apply the side frame with the crawler to take the rotational reaction force. A work mode and a work mode in which the gantry is connected to a base frame or the like and a medium excavator is mounted on the gantry to take a rotational reaction force can be selectively adopted. Also, the work can be done with the concrete mixer truck mounted on the stand. Therefore, it is possible to provide a rotary reaction force removing device having a wider range of applications than those of claims 1 and 2, and it is more economical.

According to the fourth aspect, since the beam is detachably attached to the base frame, it is possible to hold beams having different lengths and change the beam length according to the work site. The beam can be divided with respect to the base frame, which is advantageous for storage and transportation.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a gantry according to the present invention in a state where a side frame interval is minimized, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a gantry by a tilting device of the embodiment. FIG. 4 is a side view showing a state in which the base is tilted, FIG. 4 is a plan view showing a state in which the frame is removed in the embodiment, FIG. 5 is a side view of FIG. 4, and FIG. 6 is a side frame of the embodiment. FIG. 7 is a plan view showing a state in which the interval is maximized, and FIG. 7 is AA of FIG.
A sectional view, FIG. 8 (A) is a plan sectional view showing the end structure of the guide beam of the embodiment in a bent state, FIG. 8 (B) is a plan view of the extension beam of the embodiment, and FIG. FIG. 10 is a sectional view taken along line BB of FIG. 6 and FIG. 10 is a sectional view taken along the line BB of FIG. 6 showing the guide beam end structure of the embodiment in a linear state. is there.

Claims (4)

[Claims] 1. A casing driver main body, a base frame connected to a side surface of the main body, a beam extending substantially horizontally from the base frame and attached, and a tip end portion of the beam being rotatable in a predetermined range. Rotation of a casing driver, comprising: a base frame attached to the base frame; a vehicle mounting base that is detachably attached to the base frame and the base frame; and a tilting device that lifts the main body side of the base. Reaction force removal device. 2. A casing driver main body, a base frame connected to a side surface of the main body, a beam extending substantially horizontally from the base frame and attached, and a tip end portion of the beam being rotatable in a predetermined range. And a base frame attached to the base frame and the base frame in a detachable manner, and a widening device for adjusting a distance between the left and right side frames forming the base. A casing driver rotation reaction force removing device. 3. The rotary reaction force removing device for a casing driver according to claim 1, further comprising a widening device for adjusting a distance between the left and right side frames forming the gantry. 4. The casing according to any one of claims 1 to 3, wherein the base frame has a projecting portion, and the projecting portion has a structure in which a beam is detachably fitted and pinned. Rotational reaction force removing device for driver.