JPH0649616Y2 - Machinery for foundation work - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention is a basic construction such as ground excavation, driving of piles or sheet piles, or press fitting by an elevating member attached to a guide column supported by a self-propelled crane body. Related to machines that perform

(Prior art and its problems) As a machine for this type of foundation work, a guide pillar of an elevating member such as an auger machine for mounting an auger screw for excavating the ground or a hammer for pile driving is supported by a supporting rod such as a backstay or a boom. It is known that the crane body is mounted on a self-propelled crane main body so that it can be switched between an upright posture and a horizontal posture, and that the crane main body can be moved with a horizontal guide rod installed (Actual No. Sho 58-176188, special feature). Kaisho 61-106888, same
62-68997, Japanese Patent Publication No. 61-47276, etc.).

However, since these conventional foundation construction machines are carried on a trailer when they are transported to their destinations, there is a drawback that the total length of the guide columns can be set to only about 17 m at the longest so as not to hinder road traffic. It was

Further, a means has been proposed in which the lower part of the guide column has a separation structure in which it is folded down via a pivot pin in a horizontal position during transportation or self-propelling, and the horizontal length in the horizontal position is shorter than the total length in the upright position. However, the length of the folded portion is restricted to a range where the lower end does not touch the ground, generally about 3 m at maximum.

Therefore, when a long guide pillar of, for example, 20 to 25 m is required to deeply excavate or drive piles or sheet piles, press fit, etc. depending on the properties of the ground, the type of construction, the size, etc. Since the machine for foundation construction in which the guide pillar of is held in the crane body is unusable, it takes a lot of labor and time to assemble the long guide pillar at the construction site and disassemble it after the construction. Has been done.

In view of the above-mentioned circumstances, the present invention can set the length of the guide pillar in the upright posture during construction to a long length such as 20 to 25 m in the case where the guide pillar is held by the self-propelled crane body, and the trailer can be set. A foundation that allows the guide columns to have a short horizontal length that does not interfere with road traffic during transportation and self-propelled at the construction site, and that the above-mentioned addition operation is easy and the guide columns are stable during installation. The purpose is to provide a construction machine.

(Means for Solving the Problems) In order to achieve the above object, in a machine for foundation work according to claim (1) of the present invention, a guide column of a lifting member such as an auger machine or a pile hammer hammers a supporting rod. In a machine for foundation construction which is attached to a self-propelled crane main body so as to be convertible between an upright posture and a horizontal posture via the guide strut, the guide strut is composed of a strut main body and a joint strut that is detachably connected to the lower end thereof. Cylinder elevating guide rails are provided on both lower sides of the strut body and on both lower sides of the joint strut when they are connected, and a cylinder equipped with piston rods for extending and contracting downward is slid on these guide rails. It is freely attached and has locking means for detachably locking the tips of both piston rods and the upper part of the joint strut, and the lower part of the strut body and the joint strut The present invention employs a configuration characterized in that lockable means for fixing each cylinder to the column body side and the joint column side is provided.

Further, similarly, in the foundation construction machine according to claim (2) of the present invention, in the above-mentioned claim (1), the support rod has a back stay for supporting the upper part of the strut body and a back stay that can be freely moved up and down. An upper guide rail configured to support a lower portion of a column body and capable of freely moving up and down, and an upper guide rail that slidably connects the tip of the back stay to the column body, and a lower guide that slidably connects the tip of the support arm. The rail and the locking means for locking the backstays and the tips of the support arms at the lower ends of both guide rails are provided so as to be non-slidable.

Further, a machine for foundation work according to claim (3) of the present invention is
In the above-mentioned claim (1) or (2), the lower part of the pillar main body is divided and formed so as to be hung down via a pivot pin in a horizontal posture of the pillar main body.

(Operation) The total length of the guide pillar in the upright posture during construction is, for example, 20 to 25 by adding the joint pillar to the lower part of the pillar body.
It can be set as long as m (Fig. 1). On the other hand, during transportation by a trailer or by self-propelling, the horizontal length of the guide column in the horizontal posture can be shortened to, for example, 17 m or less by removing the connecting column (Fig. 7).

Then, when replenishing the connecting columns, extend the cylinders arranged on both sides of the lower part of the column body, and lock the ends of the cylinders with the locking means on the upper part of the column connecting the columns, and then use both cylinders. Contract. As a result, the joint pillar is lifted from the ground, and the upper end of the joint pillar is joined to the lower end of the pillar body. Therefore, the both can be connected by bolt connection between the end flanges to form an integral long guide pillar ( FIG. 13A to D). After this connection, the locking of the joint columns of both cylinders is released and the extension operation is performed again, the tip of each piston rod is grounded, and then both cylinders are contracted after releasing the locking means on the column body side. As a result, both cylinders are lowered by their own weight along the guide rails for raising and lowering the cylinders, and are arranged on the side of the joint column. Then, if both cylinders are fixed to the joint pillar by the locking means on the joint pillar side, the lower part of the guide pillar is fixed at the lower ends of both piston rods through appropriate beating members regardless of the unevenness of the ground by adjusting the expansion and contraction of both cylinders. It can be grounded in a stable state (Figs. 14A to 14C).

According to the configuration of claim (2), the tip of the support arm is positioned at the upper end (rear end) of the lower guide rail in the horizontal posture of the strut body, while the back stay is in the contracted state and the tip is at the upper end of the upper guide rail ( If it is set so as to be located at the rear end), the column body will be supported at a well-balanced front position with respect to the crane body (Fig. 7). Next, in order to shift the pillar body from the above horizontal posture during transportation or self-propelling to the upright posture during use, first, the back stay is extended. As a result, the pillar body moves rearward while being horizontally held on the crane body, and stops at the position where the tip of the support arm slides and reaches the lower end (front end) of the lower guide rail (Fig. 9). . When the back stay is contracted after the tip of the supporting arm is fixed at the lower end (front end) position of the lower guide rail by the locking means at the rear end position of the strut body, the strut body does not move. The tip of the back stay slides forward along the upper guide rail and reaches the lower end (front end) of the guide rail (Fig. 10).
Here, the tip of the back stay is fixed to the lower end (front end) of the upper guide rail by the locking means. Thus, the guide columns fixed to the back stay and the support arm at the lower end positions of both guide rails are driven forward by extending the back stay in the same manner as in the conventional case, so that the back stay and the support arm are tilted to the front end from the horizontal position. Tilt upright with the side down (Fig. 11), and finally shift to an upright position. In this upright position, the supporting position of the supporting arm is the lower end of the lower guide rail, so the lower end of the column main body is in a high position, and the height required for adding the connecting column is secured (12th
Figure).

To switch from the upright position to the horizontal position, the operation procedure reverse to the above may be performed.

When the lower part of the pillar main body is divided and formed so as to be hung down via the pivot pin under the horizontal posture of the pillar main body as claimed in claim (3), the horizontal direction of the pillar main body during transportation and self-propelling. The direction length becomes shorter.

(Embodiment) Hereinafter, the present invention will be specifically described based on illustrated embodiments.

FIG. 1 shows an earth auger, which is an embodiment of the present invention, in which a self-propelled crane main body 1 has a pair of left and right guide columns 2 extending and retracting and supporting a rear backstay 3 and a front portion which can be lifted and lowered. An auger machine 6 as an elevating member is vertically mounted on the guide column 2 on an elevating guide rail 2a provided on the front side of the guide column 2 so as to be vertically movable. Reference numeral 7 is a leader top with a sheave provided on the top of the guide column 2, and a pile 9 is hung from the ground by a wire 8 as shown by a dashed line in the figure to make a vertical driving or press-fitting posture along the guide column 2 or the auger machine 6 is installed. Similarly, the wire 8 is hung. A drive system using a chain (not shown) arranged along the guide column 2 can be used for raising and lowering the auger machine 6.

The guide column 2 is composed of a column body 10 and a removable column 11 connected to the lower end of the column body 10. Further, the lower portion of the column main body 10 is formed as a folded-down portion 10b separately from the main column portion 10a, and is connected to the column portion 10a via a pivot pin 12a and a locking pin 12b. By pulling out the stop pin 12b, the stopper pin 12b can be rotated rearward.

Here, the total length of the guide pillar 2 is usually set in the range of about 17 to 25 m, and for example, when the total length is about 23 m, the length of each part is
The main pillar 10a of the strut body 10 is about 15 m, and the folded part 10b is 3 m
The joint pillar 11 is about 5 m.

On the other hand, on the rear side of the pillar body 10, an upper guide rail 13 reaching the top of the pillar body 10 and a folded-down portion 10b from the bottom of the main pillar portion 10a.
And a lower guide rail 14 extending to the lower end thereof are arranged along the longitudinal direction and in the same length. Also, the pillar body
Rotation leaders 2a and 2b are formed at a position near the upper part of 10 and the lower end of the folded-down part 10b.
The lower parts 13a, 14a of these are located in these rotary leader parts 2a, 2b and separated from the upper side. The lower guide rail 14 is also vertically separated at the boundary between the main pillar portion 10a and the folded-down portion 10b.

Each backstay 3 has an upper telescopic cylinder 3a
And a lower single-acting cylinder 3b are coaxially connected to each other on the base side, and the piston rod tip of the lower cylinder 3b is pivotally attached to the crane body 1 and the upper cylinder 3a has an upper portion at the piston rod tip. Guide rail 13
It is pivotally attached to a sliding bracket 15 which is slidably fitted in the. The support arm 4 is composed of a cylinder pivotally attached to the crane main body 1 so as to be vertically swingable, and a sliding bracket 16 slidably fitted to the lower guide rail 14 at the tip of the piston rod of the cylinder. The cylinder 4a is mounted on the crane main body 1 and can be lifted and lowered by the cylinder 4a.

Further, the crane body 1 includes a back stay 3 and a support arm 4.
Mast 1 located between and and driven up and down by cylinder 17a
7 and a columnar column support 18 located behind the back stay 3 are provided. The mast 17 and the column support 18
Rollers 17b and 18a are attached to the tops of the respective.

As shown in FIG. 2, FIG. 3 and FIG. 6, the upper and lower guide rails 13 and 14 are composed of channel materials arranged opposite to each other, and are fixed to the sliding brackets 15 and 16 inside thereof. Sliding blocks 15a and 16a are slidably fitted. Both ends of both guide rails 13 and 14 are closed. Further, the guide column 2 is formed by the rectangular tubular member 19a except the rotation leader portions 2a, 2b.
2b are both cylindrical tubular members 19a connected to upper and lower rectangular tubular members 19a by bolting end flanges to each other, and cylindrical outer tube 1
9c is fitted so as to be rotatable in the circumferential direction. Then, the second
As shown in the figure, in the upper rotary leader 2a, the outer tube 19
The separated lower part 13a of the upper guide rail 13 is fixed to the upper part of the outer periphery of c, and the bracket 20 for hooks having a U-shape in a plan view is fixed immediately below the lower part 13a.
And a hook rotating cylinder 22 are rotatably pivoted by pins 23a and 23b, respectively.
The tip of the piston rod 22 is connected by a pin 23c so as to be relatively rotatable. On the other hand, an engaging pin 24 is provided on the upper sliding bracket 15 via a mounting bracket 15b, and when the bracket 15 is located at the lower portion 13a of the guide rail 13, the hook 21 is engaged by the expansion and contraction operation of the cylinder 22. It is configured to engage / disengage the dowel pin 24. Further, in the lower guide rail 14, the sliding bracket 16 can be locked and fixed by the locking pins 25a and 25b at both upper and lower ends thereof.

As shown in FIGS. 4 to 6, on the left and right sides of the folded-down portion 10b of the strut body 10, there are provided cylinder elevating guide rails 26a formed of two parallel pipes along the longitudinal direction. A pair of telescopic extension cylinders 27, 27 for extending and contracting the piston rod 27a downward are fitted on each guide rail 26a so as to be able to move up and down through upper and lower sliding metal fittings 27b, 27b. A dog 27c having a pin hole 28a through which the locking pin 28 can be inserted is provided at the tip of each piston rod 27a. Both cylinders 27, 27 can be fixed to the U-shaped fixing brackets 29a provided on both sides of the folded-down portion 10a via lock pins 30. As shown in FIGS. 12 to 14, the pin holes 28 are also provided on both sides of the joint column 11.
Corresponding to a, the locking hole 28b located at the top and the folding part 10
Cylinder elevating guide rails 26b, 26b that can be connected to the guide rails 26a, 26a of a, and a fixing bracket 29b are provided, and both cylinders 27, 27 are also connected via the lock pin 30 on this joint strut 11 side. It is designed so that it can be fixed.

Next, the operation of the earth auger having the above structure will be described.

First, when carrying out trailer transportation or self-propelled at a construction site, as shown in FIG. 7, the pillar main body 10 has the pivoting pin 12 at the folding down portion 10b in which the auger machine 6 and the cylinders 27, 27 are arranged.
It is supported on the crane main body 1 by the support arm 4, the mast 17, and the support 18 which are not swingable in a horizontal posture in a state of being hung via a. At this time, the back stay 3 is in the most contracted state, the sliding bracket 15 is located at the rear end of the upper guide rail 13, and the sliding bracket 16 pivotally attaching the tip of the support arm 4 is located behind the lower guide rail 14. It is immovably fixed by a locking pin 25a at the end. Therefore, the pillar main body 10 is in the front end position on the crane main body 1, its center of gravity is on the substantially central portion of the crane main body 1, is maintained in a well-balanced and stable state, and the horizontal length is the main pillar. Department
Even if it is slightly longer than the length of 10a, it will be within 17m even with the above-mentioned set dimensions.

Next, when constructing a hole or a pile, first, as shown in FIG. 8, the folded-down portion 10b is raised and linearly connected and fixed to the main pillar portion 10a by the locking pin 12b. After that, the locking pin 25a
After removing the back stay 3, attach the back stay 3 to the lower cylinder 3b, for example.
Drives to extend. This allows the pillar body
10 moves rearward in a horizontal position, the sliding bracket 16 of the support arm 4 slides along the lower guide rail 14 to reach its front end position, and as shown in FIG. Set to position. Here, the sliding bracket of the support arm 4
16 is fixed at the front end position of the lower guide rail 14 by the locking pin 25b, the back stay 3 is contracted, and the sliding bracket 15 is moved to the front end position of the upper guide rail 13 as shown in FIG. It is locked by the engagement of the hook 21 and the engaging pin 24. Then, as shown in FIG. 11, the mast 17 is lifted by driving the cylinder 17a and the back stay 3
The extension operation of the column main body 10 starts so that the rear end side becomes higher. During the start-up or after the start-up, the support frame 4 is also lifted by driving the cylinder 4a to set the elevation angle larger than that in the state shown in FIGS. Then, the strut main body 10 is activated and finally takes the upright posture as shown in FIG. 12, but the height of the lower end from the ground is adjusted to be slightly larger than the length of the joint strut 11.
Note that this height adjustment can be easily performed by the expansion / contraction operation of the support arm 4 or the elevation angle setting.

Thus, after the pillar main body 10 is placed in the upright posture, the joint pillar 11 is carried in such that the upper portion thereof is located directly below the pillar main body 10, and both joint cylinders 27, 27 are extended as shown in FIG. 28a is aligned with the locking hole 28b of the joint column 11, the locking pin 28 is inserted into the locking hole 28b through the pin hole 28a as shown in FIG. 8B, and then both cylinders 27, 27 are contracted. As a result, the joint column 10 is raised as shown in FIG. 7C, then lifted in a vertical state as shown in FIG. 4D by separating from the ground, and the fitting guide portion 11a at the top of the joint column 10 is lifted.
The lower end flange portion 31a of the main body 10 and the upper end flange portion 31b of the joint column 11 overlap with each other. Then,
By connecting the overlapped flange portions 31a and 31b with bolts, the main body 10 and the joint column 11 are integrally connected to form a guide column 2 as shown in FIG. 14A. Next, the locking pin 28,28
And both cylinders 27 and 27 are extended again, and the dog 27c of each piston rod 27a is grounded as shown in FIG. 14B.
Further, the lock pin 30 is pulled out and the cylinders 27, 27 are contracted. As a result, each cylinder 27 descends by its own weight along the connected cylinder elevating guide rails 26a, 26b and moves to the joint column 11 side, so that the contraction is stopped at an appropriate position as shown in FIG. It is fixed to the fixing bracket 29b of the joint column 11 at 30. Then both cylinders 27,
After returning 27 to the most contracted state, extend the required amount and dog 27c
Is grounded through the U-shaped bracing member 32 to bring it into the use state shown in FIG.

On the other hand, in order to return from the use state to the self-propelled state or the transportation state as shown in FIG. 7, it is sufficient to perform the operation in the reverse procedure to the above.

Incidentally, as the locking means of the splicing strut 11 by the splicing cylinder 27 and the locking means on the strut body 10 side and the splicing strut 11 side of the cylinder 27, means other than the exemplified locking pin 28 and lock pin 30 are also adopted. It is possible.

Further, the present invention can be applied to the guide rod 2 other than the back stay 3 and the support arm 4 illustrated as the supporting rods, and the column main body 10 in which the pillar body 10 is not divided, and the detailed configuration of each part is illustrated. Other than that, various design changes are possible.

(Effects peculiar to the invention) According to the present invention, the guide pillar of the lifting member such as an auger machine or a pile hammer is held in the main body of the self-propelled crane as a foundation construction machine, and the guide in the upright posture during construction The total length of the columns can be set to a long length of 20 to 25 m by adding them, and even if it is necessary to punch, punch or press fit piles or sheet piles to the depth depending on the characteristics of the ground and the type and size of the construction. It is applicable and does not require much labor and time by assembling and disassembling long guide struts at the construction site as before, and it is a supplementary part for road traffic in trailer transportation and self-propelled at the construction site. By removing the guide post, it can be set to a short length, such as 17 m or less, that does not hinder traffic, and the refilling operation can be performed very easily. Furthermore, it provides what may be ground stably irrespective lower ends of the guide posts during construction to unevenness and inclination, etc. of the ground.

Further, according to the configuration of claim (2) of the present invention, the guide pillar can be held on the crane body in a well-balanced and stable state during transportation and self-propelling, and the upright posture and the horizontal posture can be changed easily and safely. We can provide what you can do.

Further, according to the configuration of claim (3) of the present invention, the horizontal length of the guide column in the horizontal posture can be set shorter,
There is an advantage that it is easy to transport and it is easy to carry out self-propelled movement at the factory site.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a side view of the entire foundation construction machine in a construction state, and FIG. 2 is a view showing a locking mechanism of a back stay tip at a lower end of an upper guide rail. 3 is a vertical sectional side view of a portion, FIG. 3 is a sectional view taken along the line III-III of FIG. 2, FIG. 4 is a front portion of the lower part of the column main body, FIG. 5 is the same side view, and FIG. VI-VI line sectional view of
7 to 12 are side views of the entire foundation construction machine showing the process of shifting the strut body from the horizontal posture when not in use to the vertical posture for construction in the order of operation, and FIGS. 13A to 13D are joint strut columns. 14A to 14C are front views of essential parts showing a grounding operation of the guide column in operational order. 1 ... Crane body, 2 ... Guide post, 3 ... Back stay,
4 ... Support arm, 6 ... Auger machine (elevating member), 10 ... Strut body, 10b ... Folding part (lower part of strut body), 11 ... Joint strut, 12a ... Pivot pin, 13 ... Upper guide rail, 14 ... Lower guide rail, 21 ... hook (locking means), 25b ... locking pin (locking means), 26a, 26b ... cylinder lifting guide rail, 27 ... additional cylinder, 27a ... piston rod, 28 ... locking pin (Locking means), 30 ... Lock pin (Locking means).

Claims (3)

[Scope of utility model registration request] 1. A foundation construction machine, such as an auger machine or a pile hammer, in which a guide column of a lifting member is attached to a self-propelled crane body so as to be convertible between an upright position and a horizontal position through a supporting rod. The pillar is composed of a pillar body and a joint pillar that is detachably connected to the lower end of the pillar body, and cylinder lowering guide rails that are continuous when the two are connected are provided on both lower sides of the pillar body and both lower sides of the joint pillar. A cylinder equipped with a piston rod that drives downward extension and contraction is slidably attached to each of these guide rails, and locking means for detachably locking the tip end of both piston rods and the upper part of the joint column is attached. Locking means that is provided and is provided on the lower portion of the strut body and the joint strut is provided with lockable and detachable locking means for fixing each cylinder to the strut body side and the joint strut side. Foundation construction machine which is characterized in that there. 2. A support rod is composed of a back stay that supports the upper part of the strut body and can be extended and retracted and can be moved up and down, and a support arm that can lower and lift the strut body. An upper guide rail that slidably connects the tips of the backstays, a lower guide rail that slidably connects the tips of the support arms, and the lower ends of both guide rails make the backstays and tips of the support arms non-slippery The foundation construction machine according to claim 1, further comprising locking means for locking. 3. The foundation construction machine according to claim 1, wherein the lower part of the pillar main body is divided and formed so as to be hung down via a pivot pin in a horizontal posture of the pillar main body.