JPH024732B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pile press-fitting/pulling machine that is convenient for press-fitting or pulling out piles such as steel sheet piles in the vicinity of structures such as buildings.

The sites where piles are pressed in and pulled out generally have hard and soft ground, but conventional pile press-in and pull-out machines can handle both hard and soft ground with a single machine. There is no material that can be used efficiently depending on the situation, and if excavated near buildings or other structures, there is a risk of collapsing the adjacent land and causing ground subsidence. There is no device that can press piles into the ground without causing damage, and there is also no device that can be used by changing the direction of the pile pulling/pulling device at the corner of the site, causing inconvenience.

The present invention was developed to solve the above-mentioned problems, and the present invention includes a boom provided on a mobile vehicle body, a main pillar erected from the tip of the boom, and
A pile retraction/extraction device is installed above the main pillar guide so that it can move vertically and rotate horizontally. It consists of a through-hole section of the formed auger screw, a pile gripping hole with a planar substantially H shape provided in front of the through-hole section, and a rotating pile gripping section connected to the pile gripping hole and having a pile retraction/extraction mechanism. Pull the wire from below or above to move the pile retraction/extraction device downwards or upwards along the main pillar guide.If the ground is soft, the pile retraction/extraction device can be used to move the pile over the pile in both forward and backward directions. First, the pile is efficiently pulled into the ground with a wire while gripping, and furthermore, there is a pile gripping part having an auger screw through-hole part below the main pillar and a pile gripping hole having a substantially H-shaped plane in front of the main pillar. A pile press-in/extraction mechanism and a hydraulic cylinder are installed inside the pile gripping part, and when digging into hard ground, the lower part of the pile is gripped by the front pile gripping mechanism while the auger screw is used to excavate underground. , the hydraulic cylinder allows the pile to be press-fitted and pulled out without causing buckling, and in particular, it can be press-fitted or pulled out whether the pile is facing forward or backward; In other words, by moving the auger screw on the main column side of the pile press-in/extraction machine so that it can excavate underground, there is no risk of ground collapse of adjacent structures, and furthermore, the possibility of ground collapse of adjacent structures is eliminated. The through-hole part of the auger screw of the upper pulling/extracting device and the grasping mechanism of the pile in front of it can be changed within a range of 90 degrees with respect to the support member on the main pillar guide side, so the direction of the main pillar can be changed. By rotating the through hole of the auger screw and the pile gripping mechanism of the auger screw, and the pile gripping mechanism of the pile press-in/extraction device below the main column that is linked to this, the piles at the corner can be easily and efficiently removed. The feature is that it can be press-fitted and pulled out.

Embodiments will be described in detail below with reference to the drawings. First of all, FIG. 1 is a side view and a front view of the pile press-in/extraction machine according to the present invention, in which 1 is a known mobile vehicle body, which includes a crawler-type lower traveling device 2, an upper swivel table 3, and a It is equipped with stabilizing legs (outriggers) 5 and the like having a cylinder 4 at the tip. Note that the undercarriage device 2 may be of the crawler type shown, or of a normal track type not shown. Reference numeral 6 denotes a boom provided on the upper part of the swivel table, which is installed so as to be extendable, retractable, and undulating using a known mechanism. At the tip of the boom, there is an upper swivel seat 9 supported by a leader bracket 8.
is attached, and an upright main pillar 10 is provided. In front of the main pillar 10, an auger screw 12 with an excavation mechanism 11 disposed on the upper part is provided parallel to the main pillar 10, and behind the main pillar 10, a winch wire rope 13 and a sheave block 1 are installed.
4. A retracting device 15 is connected to and attached to the upper rotating seat 9 to move the retracting wire rope 16.

On the other hand, the wire rope 17 and the wire rope 17 are passed through the auger screw 12 and run along the main pillar 10.
This is a pile pulling/extracting device that moves up and down with 6'.
The pile retracting/extracting device 17 has a gripping mechanism for retracting and retracting piles, as will be described later, and is connected to a winch for hoisting and lowering installed on the vehicle chassis.
The wire rope 16 for pulling in is connected to the wire rope 1 through the sub-leader 7 and the sheave of the lower frame.
6'.

Further, at the lower end of the auger screw 12, a pile press-in/extraction device 19, which will be described later, is provided, which has a pile gripping mechanism and performs the pile press-in and pull-out operations. 20 is a hydraulic cylinder. 21 is main pillar 1
0 is a wire with a hook for pile erection suspended along 22 indicates a pile to be press-fitted.

Next, the structure of the pile pulling/extracting device 17 will be explained with reference to FIGS. 2 and 3. That is, 23, 23 are supporting members of the pile retracting/extracting device 17, and two members having a substantially trapezoidal planar shape are fixed vertically and horizontally in parallel with a board.
Connecting members 23a, 23a' are vertically disposed on both ends of the base plate, and the inner parts of the connecting members 23a, 23a' are fitted into the guide 10' of the main column 10 so as to be vertically slidable, as shown in FIG. The supporting member 2
A through-hole portion 25 having a circular auger screw through-hole 25′ is formed at the tip of each of the upper and lower support members 23 and 23′, and a rotary pile gripping portion 24 is supported between the upper and lower support members 23 and 23′. A ring portion 24a is fitted. The pivoting pile gripping part 24 is box-shaped and has approximately H-shaped pile gripping holes 26 in the upper and lower plate parts in plan, and a support ring part 24a having a circular shaft hole in the base end.
has been formed. As described above, the rotating pile gripping part 24 is fitted between the support members 23 and 23' of the support ring part 24a of the rotating pile gripping part 24, and the shaft tube 27 is fitted into the shaft hole of the support ring part 24a. It is pivoted so that it can rotate within a 90° range. Reference numeral 27' is a stopper of the shaft cylinder 27. Since the pile gripping hole 26 is approximately H-shaped in plan, the pile 22, which is approximately U-shaped in plan, can be penetrated and held in either the forward direction or the rear direction.

28 is a side L-shaped mounting member, and the vertical plate portion 2
8a is fixed to the substrate portion of the support member 23 by a method such as welding, and the hydraulic motor 2 is attached to the horizontal plate portion 28b.
9, and a pinion 29b is provided on the shaft 29a of the hydraulic motor. The pinion 29b meshes with a gear 24b formed on the outer wall surface of the support ring portion 24a, and the rotational force of the motor 29 moves the pivoting pile gripping portion 24 at an angle of 90 degrees with respect to the main pillar 10 via the pinion 29b and the gear 24b. It is configured to rotate within the range.

Next, a gripping mechanism for the pile 22 is formed inside the rotating pile gripping part 24;
Two hydraulic cylinders 30, 30' with one end fixed to the mounting part 24c in 4, and the hydraulic cylinder 3
Attach the retraction camchuck 31 attached to the tip of the piston 0, 30' and the retraction camchuck 31'.

Teeth portions 32, 32' are cut into the portions of each camchuck 31, 31' that contact the stake 22, so that the stake 22 can be strongly gripped. The above-mentioned pile gripping mechanism operates in opposite directions to the direction of the arrow when the pile is pulled in and pulled out, thereby performing its respective functions. Note that 33 is bush. Also, 34,
Reference numeral 34' denotes a receiving tooth formed on the wall surface on the opposite side of the teeth 32, 32' with the stake 22 interposed therebetween in order to securely grip the stake.

Next, the pile press-in/extraction device 19 shown in FIG. 1 is shown in FIG. 5A, a top view, a side view, and FIG. 6.
As mentioned above, the auger screw 12 is passed through the through hole 35' of the through hole part 35, and the pile gripping hole 36' is opened in the pile gripping part 36 in front of the through hole part 35 in a substantially H shape in plan. The structure is substantially the same as that of the pile pulling/extracting device 17, and a pulling chuck 37 and a press-fitting chuck 38 are attached to the pile 22 so as to be crimped onto the pile 22.
are provided below the pile gripping part 36 to grip the top and bottom of the pile 22, respectively, and selectively press and grip the pile 22 as shown by the arrows when pulling out or press-fitting. 39 is a vertically oriented chevron-shaped platform formed within the pile gripping portion 36. 40 is a bearing installed upright on the pile gripping part 36;
An operating shaft 40a is inserted through the bearing, and the operating shaft 40a
At the same time, a connecting rod 40b is attached to the inside of the operating shaft 40a, and the upper end fitting hole 42a of the press-fitting operating rod 42 is fitted into the lower end shaft portion 40c of the connecting rod 40b. By operating the operating handle 41, the press-fitting chuck 3
8 is installed on the inclined surface 42c' of the chevron-shaped platform 39, and the stake 22 is pressed by the teeth 43.

On the other hand, a connecting rod 37c is connected to the lower part of the extraction operation rod 37a via a pin 37b, and a extraction chuck 37 is connected to the lower part of the extraction operation rod 37a via a pin 37d. The chuck 37 is installed on the inclined surface 42c of the chevron-shaped platform 39, and the stake 22 is crimped with the teeth 43'. 44 is a stopper for the extraction chuck 37, and 45 is a stopper for the press-fitting chuck 38.

Next, the support hole 10a formed on the side surface of the main pillar 10
Hydraulic cylinders 20 for press-fitting and pulling out are provided at both end edges of the planar arc-shaped frame 46 inserted into the frame 46, and the piston 20' of the hydraulic cylinder 20 is connected and suspended to the pile gripping part 36 for press-fitting and pulling out the piles. At the time of pulling out, the hydraulic cylinder 20 is operated to raise and lower the press-fitting and pulling out chucks 37 and 38 of the pile gripping part 36.
The pile 22 is crimped and then press-fitted or pulled out.

In addition, in order to prevent the entire mechanism from being lifted up by reaction force during press-fitting, reaction mechanisms 47 and 4 are provided.
Attach 8,49. Note that 10b is a roller that makes the frame 46 slide smoothly, and the pile gripping portion 36
When the pile 22 penetrated by the pile gripping part 36' is rotated by the rotation of the pile retracting/extracting device 17,
Interlockingly, the pile gripping section 36 is rotated according to the arcuate surface of the frame 46. 16 and 16' are wire ropes for press-fitting, and are connected from the upper winch to the lower frame 50.
It is connected to the pile pulling/extracting device mentioned above.

The present invention is constructed as described above, and its operation will be explained below. The winches provided on the vehicle body 1 are roughly classified into the following four types. These are a wire-type retracting winch, a double-pile erecting winch, a Hauger hoisting and lowering winch, and a two-pile retracting/extracting winch for hoisting and lowering.

The wire rope 13 led out from the winch (A) is amplified by the pulley device of the sheave block 14, and the pile pulling/extracting device 17 pulls in the pile. The winch (B) operates a wire with a hook 21 for pile erection that lifts and holds the pile to be driven, the winch (C) drives the auger screw 12 up and down, and the winch (D) operates a pile pulling/extracting device. 17 to be hoisted and driven. By the operation of the winch and wire described above, the pile is held at a predetermined driving position, and while the ground is excavated by the auger screw 12, the pile is grabbed by the pile pulling/extracting device 17, and the wire 18 connected to the winch in A above is held. , 16'. on the other hand,
The press-fitting operation can be performed using the hydraulic cylinder 20 and the gripping mechanism provided in the pile press-fitting/extracting device 19 and the auger screw 12 described above. In addition, as another means of operation, in the case of soft ground,
Piles can be pulled into the ground using the pulling force of the wire without using an auger screw. Furthermore, in the final process of pile press-in, in order to prevent the ground from collapsing easily due to the auger screw, the pile press-in is performed only by the hydraulic cylinder 20 of the pile press-in/extraction device 19 without digging with the auger screw 12. Stabilize the pile by This makes it possible to carry out so-called root-fixing work.

The technology featured in the press-in operation as described above is that the operation of the pile is facilitated by the above-mentioned winch operation (d) which hoists and drives the pile retraction/extraction device 17;
Reliable work is carried out in cooperation with the operation of the pile press-in/extraction device 19. Next, when pulling out the pile once press-fitted, a strong pulling force can be exerted by the action of the hydraulic cylinder 20. Particularly when the press-in depth becomes large, it becomes possible to perform extraction operations that are impossible to perform with conventional equipment.

The basic operation and features of the pile press-in/extraction machine according to the present invention are as described above, but the present invention can exhibit other effects based on the mode of use. In other words, when the pile to be press-fitted is a concrete pile-shaped pile or various types of pile materials such as steel pipe piles, it is difficult to grasp the pile. Device 1
After removing the piles 9 and excavating the ground using the auger screw 12, the piles are inserted using a construction winch, and the piles can be driven by hammering without using a sheave block. The above operation can also be performed without excavating the ground, and the supporting capacity of the ground can be maintained. Furthermore, by removing all the pile driving parts, it is possible to perform normal crane operation, and it has various advantages such as being able to perform clam shell work using four winches.

However, the most important effects of the present invention are as follows. That is, the upper pile retracting/extracting device 17 fitted into the main pillar guide has a support member that is fitted into the guide and moves up and down by pulling a wire, and an auger screw that rotates within a range of 90 degrees with respect to the support member. It consists of a through-hole section of the Y, a hole section for gripping a pile with a planar substantially H-shape in front of the through-hole section, and a gripping mechanism for the pile connected to the gripping hole section, so that it can be excavated with an auger screw. However, it is possible to pull the wire and pull the pile firmly into the ground using the pile's gripping mechanism, and when the ground is soft, there is no need to use an auger screw.
The pile can be pulled into the ground by pulling a wire, and at the corner of the site, a hydraulic motor 29
gear 2 meshing with pinion 29b.
By turning 4b, the pile retraction/extraction device can be freely rotated horizontally within a 90° range around the main pillar and supporting member, so the pile retraction/extraction device can be rotated at the corner. The pile can be pulled into the ground by freely changing the direction in which the pile is pulled in, and since the pile gripping hole of the pile gripping mechanism is opened in an approximately H shape, the pile can be pulled forward or backward. The auger screw 1 can be grabbed and pulled into the ground, as shown in Figure 8.
2 can always be installed in front of the pile 22 to excavate underground, so the problem of the ground P' of the neighboring structure P collapsing and sinking can be solved.

In addition, in areas where the ground is particularly hard, a lower pile press-in/extraction device 19 is used to grip the pile with its pile gripping mechanism, and while excavating with an auger screw, the pile is driven into the ground with a hydraulic cylinder 20. press fit,
Alternatively, it can be pulled out from the ground. In this case, when press-fitting the pile 22, use the operating handle 4.
When you hold and turn 1, the operating shaft 40a
The connecting rod 40b and the lower end shaft portion 40c rotate, thereby operating the press-fitting operating rod 42 upward, and the press-fitting chuck 3 connected to one of the press-fitting operating rods 42
8 slides upward on the inclined surface 42c' of the chevron-shaped platform 39, moves in the direction of the pile, grips the pile 22 between it and the wall surface 35'', and operates the hydraulic cylinder 20 to lower the pile 22 into the ground. (At this time, the other extraction chuck 37 moves up the slope 42c and is in a free state.) Next, when pulling out the pile 22, turn the operating rod 37a to the upper position and the connecting rod 37c Due to the downward movement of the chuck 37, the chuck 37 moves down the slope 42c of the chevron-shaped platform 39 and moves in the direction of the pile, and the chuck 37 presses against the pile 22 and grips the pile. can be pulled out (at this time, one of the press-fitting chucks 38 is in a free state).

The pile press-in/extraction machine according to the present invention has been described in detail above, and its effects are listed as follows.

(1) The present invention is capable of efficiently pulling a pile into the ground by attaching a pile retraction/extraction device above the main pillar guide so that it can move up and down and pulling it with a wire. A pile pulling/pulling device is installed so that the pile can be pressed into the ground using a hydraulic cylinder, so when a single pile press-in/pulling machine pulls a pile into soft ground, the upper pile pulling/pulling device is operated. When press-fitting a pile into hard ground, the lower pile press-in/extraction device can be operated to smoothly press-fit the pile without causing buckling. In this way, the pile pulling/extracting device and the pile press-in/extracting device can be selectively used and used efficiently for ground with different geology.

(2) By making the pile gripping hole of the pile gripping mechanism approximately H-shaped in plan, it can be applied whether the pile is facing forward or backward, so if there is a building in front of the pile press-in site, all Since the auger screw can be drilled into the ground behind the pile, ground subsidence in the vicinity will not occur.

(3) The pile gripping device is configured to rotate within a range of 90° relative to the main pillar guide and the supporting member connected to the main pillar guide, so the pile press-in/extraction machine can be moved and removed at the corners of the pile pulling site. By rotating only the pile gripping device without rotating it, the pile can be pulled into the ground very easily.

[Brief explanation of drawings]

The drawings are examples of the present invention, and FIG. 1 is a side view illustrating a pile press-in/extraction machine according to the present invention.
Fig. 2 and Fig. 3 are the above-mentioned pile press-fitting and
A side view and a top view illustrating the operation of the pile pulling/pulling device used in a part of the pulling machine, Figure 4 is a perspective view of the pile pulling/pulling device, and Figure 5 shows the pile of the pile press-in/pulling device. Fig. 6 is a side view of the pile press-in/extraction device. FIG. 7 is a perspective view of the pile press-in/extraction device, and FIG. 8 is a plan view of the pile press-in/extraction site. 1... Mobile vehicle body, 2... Crawler type lower traveling device, 3... Upper swivel platform, 4... Cylinder, 5
... Stable leg, 6... Boom, 7... Sub-leader,
8...Leader bracket, 9...Upper swivel seat,
10...Main pillar, 10'...Guide, 10a...Support hole, 10b...Roller, 11...Drilling mechanism,
12... Auger screw, 13... Wire rope, 14... Sheave block, 15... Retraction device, 16... Wire rope for retraction, 17... Pile retraction/extraction device, 18, 16'... Wire rope ,
19... Pile press-in/extraction device, 20... Hydraulic cylinder, 20'... Piston, 21... Wire with hook, 22... Pile, 23, 23'... Support member, 2
3a, 23a'...Connection member, 24...Swivel pile gripping part, 24a...Support ring part, 24b...Gear, 25
...Through hole portion, 25'...Through hole, 26...Pile gripping hole, 27...Shaft tube, 27'...Stop cover, 28...Mounting member, 28a...Vertical plate part, 28b...Horizontal Itabe,
29... Hydraulic motor, 27a... Shaft, 29b...
Pinion, 30, 30'...Hydraulic cylinder, 31,
31'... Retraction camchuck, 32, 32'...
Teeth, 33...button, 34...tightening nut,
35...Through hole portion, 35'...Through hole, 35''...
Wall surface, 36...Pile gripping part, 36'...Pile gripping hole, 37
...Chuck for extraction, 37a... Operation rod for extraction,
37c...Connecting rod, 37b...Pin, 38...Press-fitting chuck, 39...Chevron table, 40...Bearing, 40a...Operation shaft, 40b...Connecting rod, 40
c...Lower end shaft portion, 41...Operation handle, 42...
...Press-fitting operation rod, 42a...Top end fitting part, 42b
. . . Lower end connecting portion, 42c .
46...Frame, 47,48,49...Reaction force mechanism, 50...Lower frame, P...Construction, P'...
…ground.

Claims (1)

[Claims] 1. A boom that can extend and contract and raise and lower is installed on a mobile vehicle body that is equipped with a traveling device and whose upper part is driven to rotate,
A main column is made to stand upright from the tip of the boom, and an auger screw and an excavation mechanism for driving it are installed on one side of the main column in parallel with the main column, and the upper pile is retracted by fitting into the main column guide. - The extraction device is supported by a support member that fits into the main pillar guide and moves up and down by pulling wires stretched up and down, and
On the other hand, there is a through-hole section of the auger screw that rotates within a range of 90 degrees, a rotating pile gripping section that has a pile gripping hole that is approximately H-shaped in plan and opened in front of the through-hole section, and inside the rotating pile gripping section. On the other hand, the pile press-in/extraction device below the main column guide consists of an arcuate frame fitted into a mounting hole formed in the main column, a hydraulic cylinder attached to the tip edge of the frame, and a hydraulic cylinder attached to the tip edge of the frame. The auger screw is suspended from the cylinder and fixed to the main column, and has a through-hole section, a roughly H-shaped pile gripping hole opened in front of the hole, and a pile gripping mechanism installed inside to press in the piles. - A pile press-in/extraction machine characterized by comprising a pile gripping part that performs a pulling action.