JPH02171419A - Pile press-fitting machine - Google Patents

Abstract

PURPOSE:To aim at precisely positioning a pile and at simplifying the structure of a pile press-fitting machine by providing a hydraulic cylinder which can be used for both vertical movement and fold operation of a leader. CONSTITUTION:A leader 1 in a pile press-fitting machine which is composed of a lower section leader 1a and an upper section leader 1b is supported slidably by a guide 18 and a guide 20. A hydraulic cylinder 11 provided at the lower end of the upper section leader 1b is coupled at its operating end 14 to a lower support frame 4 and is then extended so as to float up the leader 1 from the ground and to move the same. Further, during transportation the operating end 14 is coupled to a bracket 61 so as to fold the lower section leader 1a about a hinge 8 in order to shorten the same to a length as small as it can be transported. With this arrangement, the leader may be floated up and precisely positioned, and the hydraulic cylinder may be used for two purposes, thereby it is possible to simplify the structure of the machine.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a pile body press-in machine.

(Prior art) The pile body press-in machine disclosed in Japanese Patent Publication No. 58-27371 utilizes a pair of endless drive chains for an auger screw rotation drive device and a chuck device for gripping antibodies. It is an excellent working machine that can move up and down simultaneously or separately, but when transporting it, it must be disassembled into the vehicle body, leader, rotation drive device, etc., and it must be assembled into the working position when starting work.

On the other hand, when transporting the reader, it is possible to reduce the size of the reader horizontally with a self-cutting blade within the loading limit of the vehicle with the reader, rotation drive device, etc. Publication of Utility Model Publication No. 58-53325 and Publication of Utility Model Publication No. 60-1989 as a device that can restore the working posture upright.
There is a pile driver as shown in Japanese Patent No. 38757.

In particular, the pile driver shown in Japanese Utility Model Publication No. 60-38757 has a bendable lower part of the leader, and when the leader is placed horizontally when transporting the pile driver, the work equipment attached to the leader can be easily moved. The overall length of the leader can be shortened by bending the lower part of the leader.

In such conventional pile driving machines, in order to drive the pile into an accurate position on the ground during work, the vehicle body is moved and rotated with the leader lifted off the ground, and after the leader is positioned, the leader is moved and rotated. I try to ground myself and start working.

Conventional pile drivers raise the leader from the ground by rotating the jib (also called the boom) upward.

(Problem to be solved by the invention) At this time, since the lower part of the leader is restrained by a hydraulic cylinder of a certain length provided between the leader and the vehicle body,
As the leader is moved up and down by the jib (boom), a horizontal displacement occurs at the bottom of the leader. That is, since a horizontal displacement occurs between the leader floating position alignment and the leader grounding, it is not easy to erect the antibody at a truly accurate position using the conventional pile driver.

The Mokukomei was developed with these points in mind. By holding the leader at a fixed angle and moving it up and down only in the axial direction, it is possible to easily ensure an accurate pile driving position, and the leader can also be moved up and down. The purpose of this is to enable the hydraulic cylinder used for movement to be effectively used for bending and straightening the lower leader.

[Structure of the invention]

(Means for Solving the Problems) The present invention provides a method for attaching a leader 1 to a vehicle body 2 by means of a jib 3.
A pile body press-in machine in which the leader 1 is divided into a long upper leader 1b and a short and small lower leader 1a rotatably connected to the upper leader 1b by a hinge 8. , when the leader is erected, the upper leader 1b and the lower leader 1a are kept in a straight line by the hinge 8 and another connecting member 10,
Guide 2 provided on upper leader 1b by jib 3
0 is slidably held, a guide 18 provided on the lower leader 1a is slidably held by the lower support frame 4 protruding from the vehicle body 2, and a hydraulic cylinder attached to the lower end of the upper leader 1b The operating end of the hydraulic cylinder 11 is connected to the Moeki lower support frame 4 for vertical movement of the leader, and when the leader is installed horizontally, the operating end of this hydraulic cylinder 11 is connected to a bracket 61 provided on the guide 18 of the lower leader 1a. The lower leader 1a is bent with respect to the upper leader 1b by a hydraulic cylinder 11.

(Function) In the present invention, when positioning and moving the leader 1 in an upright state, the leader 1 is lifted off the ground by the extension of the hydraulic cylinder 11. Further, the leader 1 is grounded by the contraction of the hydraulic cylinder 11. At this time, the guide 18 of the lower leader 1a and the guide 2 of the upper leader 1b
0 slides on the lower support frame 4 and the tip of the jib 3.

When the leader 1 is placed horizontally for transport, the lower support frame 4 is removed from the lower leader 1a, the working end of the hydraulic cylinder 11 is connected to the bracket 61 of the lower leader la, and the upper leader 1b is placed horizontally. On the other hand, this hydraulic cylinder 11 bends the lower leader 1a downward. Further, when the leader is erected, the hydraulic cylinder 11 aligns the lower reader 18 with the upper leader 1b.

(Example) Hereinafter, a pile body press-in machine according to the present invention will be described based on an example.

As shown in FIGS. 1 to 3, the leader 1 is supported by a jib 3 and a lower support frame 4 attached to the front side of a vehicle main body 2 that can run.

The reader 1 is provided with a function for press-fitting the antibody 5 and the like using power. That is, sprocket wheels 101 and 102 are rotatably supported at the upper and lower ends of the leader 1, and the sprocket wheels 101.
A driving chain 103 is wound endlessly around the leader 1 (11), and a chuck device @104 for gripping the pile body 5 is attached to the guide rod of the leader 1 so as to be vertically movable.
4, a part of the drive cheno 103 is connected to the guide rod of the leader 1, and a rotary drive device 105 is attached to the guide rod of the leader 1 so as to be movable up and down separately from the chuck device @104. The upper end of the auger screw 106 arranged along the pile body 5 is connected, and the rotation drive device of this auger screw 106 is installed! The M105 can move vertically by itself by meshing the driving chino 103 with a sprocket wheel driven by a self-installed vertical motor in a relationship between a binion and a rack. The lower sprocket wheel 102 is driven by a press-fit drive device 107 consisting of a hydraulic motor and speed reducer, and the chino 103 is rotated.

The leader 1 is divided into a lower leader 1a and an upper leader ib. Both leaders 1a and 1b are rotatably connected by a hinge 8, and are bent by 90'' around the hinge 8. A V-shaped notch 9 and a connecting member 10 that connects the opposing sides through the notch 9 are provided between the leader 1a and the upper leader 1b.

Further, a hydraulic cylinder 11 that supports the leader 1, rotational drive device [105, etc.] of the own vehicle is attached to a bracket 12 protruding from the leader 1 by means of a pin 13. The rod end 14 of the cylinder 11 is attached to a plaque provided on the upper surface of a slide frame 15 built into the lower support frame 4.
16 and supported by the bin 11.

In addition, a pair of guides 18 are provided on the back of the lower leader 1a.
is provided, and the reader 1 can be moved vertically by a bracket 19 provided at the tip of the slide frame 15. 111J, but the rotation is restrained.

A pair of guides 20 are provided on the back side of the upper leader 1b, and a bracket 21 that is slidably fitted to the guides 20 allows the leader 1 to move up and down but is restricted from rotating. Retained.

The top sheave frame 22 has a shaft 2 at the upper end of the leader 1.
It is attached so that it can rotate around bolt 3 as a fulcrum, and when working, use bolt 2.
4 to the upper leader 1b.

The jib 3 is a telescopic type and is composed of a basic jib 3a, a sliding jib 3b, and a tip jib 3C.

The upper end of the tip jib 3C is connected to the bracket 21 by a shaft 25 having a spherical bearing.

The basic jib 3a and the sliding jib 3b are hollow and have a telescopic structure, and have a built-in hydraulic cylinder as shown in the figure, by which the sliding jib 3b is extended and retracted.

The basic jib 3a is a bracket 2 located in the center of the vehicle body 2.
6 and is rotatably mounted on a shaft 21.

Further, the rod tip of a jib hoisting hydraulic cylinder 30, which is pivotally supported on the bracket 28 of the vehicle body 2 by a pin 29, is connected to the central portion of the basic jib 3a by a pin 31.

The tip jib 3C and the sliding jib 3b are rotatably connected by a folding center shaft 32. Although FIG. 1 shows the construction of a vertical pile, in this case, the tip jib 3C and the sliding jib 3b are integrated by a connecting pin 33.

As shown in FIG. 4, the tip jib 3C1 is composed of two members, a connecting frame 34 and a swing jib 35. Rotate to the position shown by the two-dot chain line in Figure 4.

The operation of the pile body press-in machine with the above structure during work will be described.

When the vehicle body 2 moves or turns, the hydraulic cylinder 11 is extended to lift the bottom surface 38 of the lower leader 1a above the ground, and during work, the pressure of the hydraulic cylinder 11 is released to ground the leader bottom surface 38. . As a result, the vertical force applied to the leader 1 is supported by the ground, so that the influence on the vehicle body 2 is small.

When the leader 1 is moved in the longitudinal direction while the vehicle body 2 is stopped, the slide frame 15 is slid and the jib 3 is rotated by the hydraulic cylinder 30.

The left and right tilt of leader 1 is corrected by hydraulic cylinder 3.
This is done by extending and retracting the swing jib 35 by rotating the swing jib 35 left and right about the shaft 36, using the bracket 19 at the tip of the slide frame 15 as a reference point.

A stopper 39 provided on the upper leader 1b is fixed to the guide 20 by bolts or the like, and if oil suddenly leaks from the hydraulic cylinder 30, it stops the downward sliding of the bracket 21 and stops the leader. 1 is a safety stopper that prevents the risk of over-tilting forward. In addition,
These bases 1 to 39 are removed when the leader is horizontal.

Next, FIG. 5 shows the undulation of the leader 1, that is, the axis 3 until the tip jib 3C is parallel to the back surface 40 of the basic jib 3a.
2 shows a link mechanism 50 that bends around 2. This link mechanism 50 will be explained below.

The other end of the link par 42 which is supported by a pin 41 on the lower side of the upper end of the basic jib 3a, and the other end of the link par 44 which is supported by a pin 43 on the tip frame 34 of the tip jib 3C are connected to the pin 4.
Further, the upper end of the link par 42 and the rod end 47 of the ll1r pressure cylinder 46 for link mechanism operation, which is pivotally supported on the basic jib 3a, are connected by a pin 48,
By expanding and contracting the +pressure cylinder 46, the tip jib 3c is rotated about the shaft 32.

The hl+pressure cylinders 46μ are provided on both sides of the basic jib 3a, and are attached to the basic jib 3a with pins 49.

In the working position, as shown in FIG. 1, the bin 43 is removed, the link mechanism 50 is released from the tip jib 3C, and the
ff We are using the moving jib 3+1, but when we want to raise and lower the leader 1, we use the sliding ωJ jib 3 as shown in Figure 5.
The hydraulic cylinder 46 was extended, and the link par 44 was connected to the connecting frame 34 by the pin 43 (the pin hole 33b of the n-shift jib 3b and the tip jib 3C
The bottle 33 connected to the bottle hole 33c is removed, and the tip jib 3C is made rotatable around the pipe 32. After that, the stopper 51 provided on the connection frame 34
the hydraulic cylinder 4 until it hits the back 52 of the leader 1.
6 and rotate the tip jib 3C.

In this state, as shown in the upper part of FIG.
The guide 20 of the leader 1 rotates around the bin 54.
The bottle 55 inserted into the clamp 53 is inserted into the bottle hole of the lower member, and the engaged state is maintained. When the clamp 53 is disengaged as shown in the lower part of FIG. 6, the bottle 55 is inserted into another bottle hole in the lower member and maintained in that state.

After the clamp, the tip bracket 21 of the tip jib 3c
A fixing pin 58 provided in the reader 1 is fitted into a pin hole 59 provided in the leader 1. Centering in this case is performed by expanding and contracting the hydraulic cylinder 11.

Through the above operations, the leader 1 becomes integrated with the tip jib 3c. The state is shown in FIG. 3 and FIG.

Next, during construction of diagonal piles, etc., in order to prevent the risk of the sliding jib 3b sliding down due to an accident with the hydraulic equipment for extending and retracting the jib 3 (not shown), the tip of the basic jib 3a is A lock g1 structure 80 for preventing f1 from falling as shown in FIGS. 7 and 8 is provided on the lower surface of the unit via a mounting plate 79.

This locking mechanism 80 for preventing slipping is provided with a required number of notched racks 82 as locking parts on the bottom plate 81 of the sliding jib 3b,
By abutting the tip 85 of the stopper 84 against the upper end surface 83, the sliding jib 3b is prevented from sliding off.

The stopper 84 rotates vJ? around the bottle 86. The spring 87 constantly applies a rotational force in the direction of the arrow in FIG. be done.

Rotating the stopper 84 in the opposite direction of the arrow is the operation of rotating the linker 42 from a to b in FIG. 7. That is, when the hydraulic cylinder 46 is extended, the lever 9
0 rotation, the stopper 84 is rotated counterclockwise via the rod 91, and the movement of the stopper 84 is released.

Although the rod 91 LJ and the trunnion 91a can move in the direction opposite to the arrow, they are locked in the direction of the arrow.

The lever 90 is supported coaxially with the hollow bottle 41 that supports the link par 42. In addition, a lever 90 is fixed to a shaft 92 passing through the hollow bottle 41.

The shaft 92 and the link par 42 are connected by connecting a lever 93 fixed to the end of +1192 to the link par 42 with a bolt 94.
It transmits rotational force.

Next, in order to lower leader 1 to a horizontal position, jib 3
While holding the dead weight of the leader 1, rotation drive device 105, etc., remove the bottle 11 at the tip of the hydraulic cylinder 11 and release the engagement between the bracket 19 and the guide 18. Then, the link mechanism 50 is moved by the hydraulic cylinder 46. to create a gap between the back surface 52 of the leader 1 and the tip 60 of the slide frame 15 by rotating the tip jib 3C through the
The rod end 14 of the hydraulic cylinder 11 is connected to the lower leader 1a.
It is connected by a bin 62 to a bracket 61 attached to the. The bracket 61 meshes with the guide 18 and can slide, allowing it to move up and down the leader 1 during work! Although it is installed in a lower position that does not interfere with the lJ function, when the leader 1 is raised or lowered, it moves within the extension stroke of the hydraulic cylinder 11 and the bolt 63
It is fixed to the guide 18 by.

When tilting this leader to a horizontal position, remove leader 1 and the rotating part! The rotary drive device δ105 and the like are moved so that the center of gravity including the IJ device 105 and the like is located near the shaft 32 at the tip of the movable jib 3b.

Thereafter, by contracting the hydraulic cylinder 30 while contracting the hydraulic cylinder 46, the leader 1 can be made horizontal as shown in FIG.

In this state, the upper part of the leader 1 is supported by the pedestal 64. As shown in FIGS. 9 and 10, the pedestal 64 is provided with a clamp mechanism that is operated by the expansion and contraction of a hydraulic cylinder 65, and levers 67 grip both sides 66 of the guide 20 of the leader 1. In addition to restraining horizontal vibration in the left and right direction, forward and backward movement of the leader 1 is also restrained. Further, a claw 68 provided on the lever 67 prevents the leader 1 from floating up.

To load the antibody press-in machine with the leader folded onto the carrier 69, remove the connecting bin 43 of the linker 44, release the link mechanism 50, and then remove the fixing bin 58. 11 Extend the moving jib 3b, move the tip jib 3C in the direction of the arrow in FIG. Reduce the size and pull the leader 1 toward the vehicle body 2. When extending the sliding jib 3b, the clamping hydraulic cylinder 65 of the pedestal 64 is contracted to restrain the movement of the leader 1. However, when the sliding jib 3b is contracted, the hydraulic cylinder 65 is compressed to the extent that the restraining force is released. Stretch.

In this state, as shown in FIG.
05 etc. by the press-fitting drive device 107, the lower leader 1
a, remove the bottle 12 connecting the lower leader 1a and the connecting member 10, cut the edge between the connecting member 10 and the lower leader 1a, and then connect the lower leader 1a with the bottle 62. Hydraulic cylinder 1
1, the lower leader 1a is bent downward about the hinge 8 as shown in FIG.

Due to the vehicle loading limit, as shown in FIG. 14, before vertically bending the lower leader 1a, separate brackets 74. 75, the brackets 74 and 75 are connected to the connecting member 76 and the bottle 77,
78 to temporarily absorb the weight of the lower leader 1a and the rotary drive device 105, etc., loosen the mounting bolt 63 of the bracket 61, and connect the hydraulic cylinder 1.
1 by lowering the bracket 61 to the lowest end of the leader 1 (the mounting position during work), fixing the bracket 61 in this position, and removing the bin 17 to free the connecting member 16. hydraulic cylinder 1
If 1 is reduced, the lower leader 18 will take on the WIW appearance as shown in FIG. In FIGS. 12 and 14, the portion indicated by a two-dot chain line indicates the shape of the transport vehicle 69.

To set up the reader 1 in the working position, reverse the above steps.

When constructing a diagonal pile or the like, in order to tilt the leader 1 to a specified backward tilt angle, the expansion and contraction of the hydraulic cylinder 30 is locked and the sliding jib 3b is retracted.

Next, the advantages of the pile body press-in machine shown in this embodiment will be listed.

By making the jib 3 telescopic and foldable, and by giving the tip jib 3C a structure and function that allows it to be bent with its own blade until it becomes parallel to the back surface of the basic jib 3a, the leader 1 and rotary drive device 105 etc. can be easily moved during forwarding etc. While equipped, the machine's external shape can be reduced to within the vehicle loading limit using its own blade, and it can also be restored to its working position using its own blade. Therefore, when transporting, etc., there is no need for a crane for disassembly/assembly such as Leader 1, or for special skills, and the work can be carried out by the operator of the antibody press-in machine and an auxiliary worker. Moreover, transportation can be carried out using a single trailer. Therefore, there is no need to pay for dismantling/assembling cranes, labor costs for special skilled workers, and separate transportation costs for leaders, etc., making it extremely economical. In addition, since no assembly/disassembly crane is required, it can be applied to narrow workplaces.
Furthermore, the time required for lifting and dismantling is reduced by 1!7, which increases operating time and improves profitability.

In addition, as a horizontal verticality correction mechanism of the leader 1, the base point of the lower support of the leader 1 is placed on the lower support frame 4 protruding from the vehicle body 2, and the upper part of the leader is attached to the swing jib 35.
Since it is horizontally R, which rotates left and right, the deviation of the center of gravity due to left and right verticality correction is smaller than that of conventional mechanisms. Therefore, the lateral stability of the antibody press-in machine is improved.

Furthermore, in a pile driving machine in which the leader 1 is supported by a jib 3, by making the jib 3 telescopic, it is also possible to construct diagonal piles, etc., and the range of application to pile construction has been widened.

Furthermore, by sliding the leader 1 in a horizontal state relative to the vehicle body 2 using the extension and contraction motion of the jib 3, the stability of the antibody press-in machine can be ensured when mounting the Kushiro onto the platform of the transport vehicle. .

〔Effect of the invention〕

According to the present invention, since the upper leader and the lower leader are slidably held by the jib and the lower support frame, and the hydraulic cylinder is provided between the upper leader and the lower support frame that are erected, the hydraulic cylinder can expand and contract. This allows the leader in an upright state to be moved up and down only in its axial direction, and the antibody, which is accurately positioned at the piling position in the floating state, can be brought to the ground without shifting its position. Furthermore, this hydraulic cylinder for TvJ on the leader can be effectively used for bending and straightening the lower leader when the leader is installed horizontally, and there is no need to provide a special hydraulic cylinder for rotating the lower leader.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the pile body press-in machine of the present invention;
Figure 2 is a front view of the pile body press-in machine, Figure 3 is a side view of the leader just before it is laid down horizontally or immediately after it is erected, Figure 4 is a front view of its tip jib, and Figure 5 is a diagram showing how to bend the tip jib. Figure 6 is a cross-sectional view taken along the line Vl-Vl in Figure 5, Figure 7 is a side view of the drawing.
The figure is a sectional view showing the locking mechanism of the sliding jib.
Figure 9 is a front view of the reader cradle,
Figure 10 is a side view of the leader, Figure 11 is a side view of the leader immediately after it is laid down horizontally or just before it is erected, Figure 12 is a side view of the pile body press-in machine when it is mounted on the Ungeikan vehicle, and Figure 13. 14 is an internal structural view of the hinge portion of the leader, and FIG. 14 is a side view of the leader when the lower part is bent at a right angle. 1...Leader, 1a...Lower leader, 1b...Upper leader, 2...Vehicle body, 3...Jib, 4...Lower support frame, 5...Pile body, 8...Hinge, 10...Connection Parts, 11...Hydraulic cylinder 18...Guide, 20...
・Guide, 61...Bracket. Pole to diagram

Claims (1)

[Claims] (1) The leader is supported by a jib on the vehicle body so that it can rise and fall freely, and this leader is divided into a long upper leader and a short and small lower leader that is rotatably connected to the upper leader by a hinge. In the pile body press-in machine, when the leader is erected, the upper leader and the lower leader are kept in a straight line by the hinge and another connecting member,
The guide provided on the upper leader is slidably held by the jib, and the guide provided on the lower leader is held slidably by the lower support frame protruding from the vehicle body. The working end of a hydraulic cylinder attached to the lower end is connected to the lower support frame for vertical movement of the leader, and when the leader is installed horizontally, the working end of this hydraulic cylinder is connected to a bracket provided on the guide of the lower leader, and this A pile body press-in machine characterized by a hydraulic cylinder that bends the lower leader relative to the upper leader.