JP4074822B2 - Steel pipe pile rotary press-fitting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a steel pipe pile rotary press-fitting device that is attached to a boom tip of a crane vehicle and used for rotary press-fitting of a steel pipe pile.
[0002]
[Related technologies]
Generally, what constitutes a steel pipe pile driver is known as one mode of a so-called steel pipe pile driver by attaching a steel pipe pile rotary press-fitting device to a boom tip of a crane vehicle such as a truck crane. As a conventional steel pipe pile rotary press-fitting device, there is a device that makes it possible to bend a long leader or to extend and contract in consideration of transportation on a truck or the like to a work site.
[0003]
For example, as a folding steel pipe pile rotary press-fitting device that can be easily transported even on narrow roads, upper struts and lower struts that constitute struts (leaders), connecting brackets that connect upper struts and lower struts, and upper struts An upper pedestal provided at the uppermost part, a lower pedestal provided at the lowermost part of the lower support, and a hanging part provided at the upper pedestal. It is bent and transported in two, and when used, the upper strut and the lower strut extend so that they are straight (see Patent Document 1), and the strut (leader) can be expanded and contracted for easy transportation and workability As a flexible telescopic steel pipe pile rotary press-fitting device, a second strut that can slide along the inner diameter of the first strut is provided, and in use, the second strut is pulled out from the first strut by driving means Sliding in direction Thus, the length formed by these columns is extended, and after use, the second column is slid in the direction to be accommodated in the first column by the driving means, and the length formed by the columns is shortened. (See Patent Document 2).
[0004]
[Patent Document 1]
Registered Utility Model No. 3052044
[Patent Document 2]
Registered Utility Model No. 3070758
[0005]
However, in the case of the conventional bending type steel pipe pile rotary press-fitting device, it is in a state where it is folded into two when moving and straightened when used, so that the leader always stretches to the maximum during use. It becomes. In the case of the conventional telescopic steel pipe pile rotary press-fitting device, the small-diameter inner leader (second strut) slides along the inner diameter of the large-diameter outer leader (first strut). Since the chain for moving the steel pipe driving part (pile rotation press-fitting means) up and down has a certain length, the chain is stretched when the leader is fully extended, while the leader is contracted Since the chain is in a slack state and cannot be used, the leader is always extended to the maximum during use. Therefore, in these conventional steel pipe pile rotary press-fitting devices, the reader must always be fully extended during use, whether bent or telescopic, and the following problems arise.
[0006]
(1) If there is any obstacle such as an electric wire or a building in the sky above the work site, the long reader becomes an obstacle, and the rotary press-fit operation becomes difficult or impossible.
(2) Even when a relatively short steel pipe pile is rotationally press-fitted, a long leader is always extended, which is wasteful.
(3) If the reader is placed in a usable state (a state in which the conventional steel pipe pile rotary press-in device is extended to the maximum) and placed on the ground or the like, a very large space is required, which is difficult to handle.
(4) In use, it is necessary to extend the boom of the crane vehicle to the maximum height of the leader in order to connect the tip of the boom of the crane vehicle and the upper end of the long leader. Since a relatively large crane vehicle is required, the economy is poor.
(5) Since the boom of the crane vehicle is extended to the height of the maximum length of the leader, and the rotary press-fitting operation is performed in a relatively unstable state where the steel pipe pile rotary press-fitting device is suspended from the tip, stability and accuracy are improved. Damaged.
[0007]
[Problems to be solved by the invention]
The present invention was made in view of the problems of the conventional steel pipe pile rotary press-fitting device, (1) Even if there are obstacles in the sky above the work site, you can rotate and press-fit without difficulty. (2) When rotating and inserting a short steel pipe pile, it becomes a leader having the necessary length, (3) Easy to handle, (4) It is not necessary to extend the boom of the crane vehicle to the height of the maximum length of the leader. (5) An object of the present invention is to provide a steel pipe pile rotary press-fitting device capable of performing rotary press-fitting work with excellent stability and accuracy.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problems, a steel pipe pile rotary press-fitting device according to the present invention includes a leader attachment means that can be attached to a tip of a boom of a crane vehicle, and a long first provided at a lower portion of the leader attachment means. A reader means; a long second reader means provided in parallel with the first reader means and movable up and down along the longitudinal direction of the first reader means; and the longitudinal direction of the second reader means Pile rotational press-fitting means provided so as to be movable up and down along the direction and capable of mounting steel pipe piles, and used for rotational press-fitting of steel pipe piles It is a steel pipe pile rotary press-fitting device, and the leader mounting means comprises leader angle adjusting means for adjusting the angle of the first leader means in the vertical direction when suspended from the tip of a boom of a crane vehicle, and the leader angle adjustment The means includes a first arm whose one end is rotatably connected to the reader mounting means, one end rotatably connected to the other end of the first arm, and the other end rotated to the boom tip of the crane vehicle. A second arm that can be connected, and a third arm whose one end is rotatably connected to the body of the second arm and whose other end is connected to the wire rope of the crane means of the crane vehicle, The vertical angle of the first reader means is adjusted by pulling the third arm by the crane means of the crane vehicle. It is characterized by that.
[0009]
The first reader means includes an upper end gear and a lower end gear, a first chain engulfed between both gears, and the lower end gear rotating forward or reverse to rotate the first chain clockwise or counterclockwise. And a first motor that is driven to rotate.
[0010]
The second leader means includes an upper end gear and a lower end gear, a second chain engulfed between the two gears, and a forward or reverse rotation of the lower end gear to rotate the second chain clockwise or counterclockwise. It is preferable to include a second motor that is driven to rotate and a first slide means that is slidable along the longitudinal direction of the first reader means in conjunction with the first chain.
[0011]
The pile rotation press-fitting means includes a pile mounting portion to which a steel pipe pile can be attached, a third motor for rotationally driving the steel pipe pile, and a second slidable along the second leader means in conjunction with the second chain. And a sliding means.
[0012]
It is preferable that a pile lifting means for lifting a steel pipe pile at the time of mounting on the pile rotation press-fitting means is provided on the upper part of the second leader means.
[0013]
The pile lifting means includes a wire rope, a hook fixed to one end of the wire rope, a winding drum connected to the other end of the wire rope and capable of winding the wire rope, and the winding drum It is preferable to comprise a hoisting motor that rotates forward or reverse.
[0014]
The first reader means includes a leader position fixture that protrudes downward from the lower end of the first reader means and supports and fixes the first reader means to the ground to prevent horizontal displacement. It is preferable.
[0015]
It is preferable that the leader attaching means includes leader angle adjusting means for adjusting an angle in a vertical direction of the first leader means when the crane is suspended from the tip of the boom of the crane vehicle.
[0016]
The leader angle adjusting means has a first arm whose one end is rotatably connected to the leader mounting means, one end rotatably connected to the other end of the first arm, and the other end is a boom tip of a crane vehicle. A second arm that is pivotally connected to the part, a third arm that is pivotally connected to the body of the second arm and has the other end connected to the wire rope of the crane means of the crane vehicle It is preferable that the vertical angle of the first reader means is adjusted by pulling the third arm by the crane means of the crane vehicle.
[0017]
The first leader means preferably includes a steel pipe pile fixing means for preventing a horizontal displacement of the steel pipe pile.
[0018]
The steel pipe pile fixing means has a gripping part corresponding to the outer diameter of the steel pipe pile, and a support arm part that supports the gripping part so as to be openable and closable at a position near the ground corresponding to directly below the pile rotation press-fitting means, It is preferable that the steel pipe pile mounted on the pile rotation press-fitting means is supported and fixed by gripping it near the ground surface to prevent the horizontal displacement of the steel pipe pile.
[0019]
It is preferable that the first leader means includes a lifting prevention means for preventing the first leader means from floating from the ground.
[0020]
The floating prevention means includes a cylindrical member fixed to the lower side surface of the first reader means, a detection rod that is freely inserted in the cylindrical member so as to be movable up and down, and a lower end that contacts the ground, When detecting the vertical movement, it has a limit switch that is turned off when the detection rod is positioned upward, and is turned on when the detection rod is positioned downward, and while the limit switch is off, It is preferable that the rotary press-fitting operation of the steel pipe pile is continued and the press-fitting operation of the steel pipe pile is decelerated or stopped while the rotary operation of the steel pipe pile is continued while the limit switch is on.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings. However, the illustrated examples are shown as examples only, and various modifications can be made without departing from the technical idea of the present invention. Nor.
[0022]
FIG. 1 is a conceptual explanatory view showing a steel pipe pile rotary press-fitting device of the present invention. In the figure, reference numeral 10 denotes a steel pipe pile rotary press-fitting device of the present invention. The steel pipe pile rotary press-fitting device 10 of the present invention has a leader mounting means 12, a first reader means 14, a second leader means 16, and a pile rotary press-fit means 18.
[0023]
The leader attaching means 12 is for attaching the steel pipe pile rotary press-fitting device 10 of the present invention to the boom tip of the crane vehicle, and has a frame having an attachment hole 22 at the upper end and a support disc 24 at the lower end. 20 and a reader angle adjusting means 30. The reader angle adjusting means 30 has one end rotatably connected to the frame 20 of the reader attachment means 12 and one end rotatably connected to the other end of the first arm 32 and the other. A second arm 34 whose end is rotatably connected to the boom tip of the crane vehicle, one end of which is rotatably connected to the trunk of the second arm 34 and the other end is a wire of crane means of the crane vehicle A third arm 36 connected to the rope; a mounting hole 35 is formed at the other end of the second arm 34; a mounting hole 37 is formed at the other end of the third arm 36; It is what. The details of the method of attaching the first leader means 14 to the tip of the boom of the crane vehicle by the leader attaching means 12 and the method of adjusting the angle of the first leader means 14 in the vertical direction by the leader angle adjusting means 30 will be described later. .
[0024]
A first reader means 14 is provided below the reader attachment means 12. The first reader means 14 is provided in a long and rectangular columnar first reader main body 40, an upper housing 42 provided at the upper end portion of the first reader main body 40, and a lower end portion of the first reader main body 40. It has a lower housing 44, and the upper plate 43 of the upper housing 42 and the support disk 24 of the reader mounting means 12 are connected so as to be rotatable in the horizontal direction.
[0025]
A sprocket (upper end gear) S1 is provided inside the upper casing 42, and a sprocket (lower end gear) S2 is also provided inside the lower casing 44. The first chain C1 is engaged between the sprockets S1 and S2, and the first chain C1 can be driven clockwise or counterclockwise by rotating the sprocket S2 forward or backward by the first motor 45. It has become.
[0026]
A rail guide 41 is provided on the upper front surface of the upper housing 42 (the surface on the side where the second reader means 16 is present). The rail guide 41 supports and guides a rail 51a of the second leader means 16 described later.
[0027]
A leader position fixture 46 projects downward from the lower end surface of the lower housing 44 of the first leader means 14. The leader position fixture 46 supports the position of the first leader means 14 by piercing the ground when the steel pipe pile rotary press-fitting device 10 of the present invention is placed upright with respect to the ground to rotationally press-fit the steel pipe pile. It is fixed to prevent the position in the horizontal direction from shifting.
[0028]
Further, the lower housing 44 of the first leader means 14 has a front (second) corresponding to a position directly below the pile rotation press-fitting means 18 from the front surface (the face on the side where the second leader means 16 and the pile rotation press-fit means 18 are present). A steel pipe pile fixing means 48 projects in the direction toward the leader means 16 and the pile rotation press-fitting means 18. The steel pipe pile fixing means 48 is configured to hold the steel pipe pile near the ground surface when the steel pipe pile rotary press-fitting device 10 of the present invention is placed upright with respect to the ground and rotationally press-fitted the steel pipe pile. The position of the pile is supported and fixed, and the position in the horizontal direction is prevented from shifting. The details of the steel pipe pile fixing means 48 will be described later.
[0029]
A second reader means 16 is provided so as to be parallel to the first reader means 14 and movable up and down along the longitudinal direction of the first reader means 14. The second reader means 16 is provided in a long and rectangular columnar second reader main body 50, an upper housing 52 provided at the upper end of the second reader main body 50, and a lower end of the second reader main body 50. And a lower housing 54. Here, unlike the first reader body 40, the second reader body 50 is formed with rails 51a and 51b in the longitudinal direction of both side ends.
[0030]
A first slide means 56 is provided on the back surface of the lower housing 54 (the surface on the side where the first reader body 40 is present). The first slide means 56 is provided so as to be slidable along the longitudinal direction of the first reader means, that is, the first slide means 56 includes a frame 57 surrounding the first reader body 40 and a first body. The frame body 57 is connected to the first chain C1 in the first reader means 14 and has a guide wheel 58 that slides in contact with the reader main body 40. Accordingly, when the first chain C1 rotates clockwise or counterclockwise, the first slide means 56 slides upward or downward along the first reader body 40 by being pulled by the first chain C1.
[0031]
When the first slide means 56 slides upward or downward along the first reader body 40, the second reader means 16 including the first slide means 56 can move up and down. At this time, since the rail 51a of the second reader means 16 is supported and guided by the rail guide 41 at the upper end of the first reader means 14, the second reader means 16 can move up and down stably without falling down. Is possible.
[0032]
Also in the second reader means 16, a sprocket (upper end gear) S <b> 3 is provided inside the upper casing 52, and a sprocket (lower end gear) S <b> 4 is also provided inside the lower casing 54. The second chain C2 is engaged between the sprockets S3 and S4, and the second chain C2 can be driven clockwise or counterclockwise by rotating the sprocket S4 forward or backward by the second motor 55. It has become.
[0033]
Further, a pile lifting means 70 is provided on the upper part of the second reader means 16 in parallel with the upper housing 52. The pile lifting means 70 includes a wire rope 76, a hook 78 fixed to one end of the wire rope 76, a winding drum 72 connected to the other end of the wire rope 76 and capable of winding the wire rope 76, The hoisting motor 73 is configured to rotate the upper drum 72 forward or backward.
[0034]
When attaching the steel pipe pile to the pile rotation press-fitting means 18 to be described later, for example, if a wire rope is tied to the neck of the steel pipe pile, and the wire rope is hooked on the hook 78 of the pile lifting means 70 and wound up. The steel pipe pile can be lifted up to a position suitable for mounting on the pile rotation press-fitting means 18.
[0035]
In addition, in the conventional steel pipe pile rotary press-fitting device, it was necessary to lift the steel pipe pile when mounting the steel pipe pile on the pile rotary press-fitting means. The steel pipe pile may be lifted using crane means such as hooks, wire ropes, and hoisting devices provided in itself, and an independent pile lifting means is unnecessary. However, in the case of the steel pipe pile rotary press-fitting device of the present invention, crane means (wire rope, hoisting device, etc.) provided in the crane vehicle itself are used in the leader angle adjusting means 30 in the leader mounting means 12 as will be described later. Therefore, it cannot be used for lifting steel pipe piles. Therefore, in the steel pipe pile rotary press-fitting device of the present invention, it is necessary to provide the above-described independent pile lifting means.
[0036]
Pile rotation press-fitting means 18 is provided so as to be movable up and down along the longitudinal direction of the second leader means 16. The pile rotation press-fitting means 18 is provided with a pile mounting portion 64, a third motor 65, and a second slide means 62 via a base frame 60.
[0037]
The pile mounting part 64 can mount a steel pipe pile via an attachment or the like as appropriate. The pile mounting portion 64 is also rotatable and can be rotated by a third motor 65. Therefore, when a steel pipe pile is attached to the pile attachment portion 64 and the pile attachment portion 64 is rotationally driven by the third motor 65, the steel pipe pile attached to the pile attachment portion 64 is also rotationally driven.
[0038]
The second slide means 62 includes guide wheels 61 that slide while abutting so as to sandwich the rail 51b. Since the base frame 60 is connected to the second chain C2 in the first reader means 16, the second leader When the second chain C2 in the means 16 rotates clockwise or counterclockwise, the second slide means 62 slides upward or downward along the rail 51b of the second reader body 50 by being pulled by this. It has become. In this way, the pile rotation press-fitting means 18 including the second slide means 62 can move up and down.
[0039]
Next, the method of attaching the first leader means 14 in the steel pipe pile rotary press-fitting device 10 of the present invention to the boom tip of the crane vehicle by the leader attaching means 12 and the vertical direction of the first leader means 14 by the leader angle adjusting means 30. A method for adjusting the angle will be described with reference to FIGS.
[0040]
FIG. 2 is a conceptual explanatory diagram showing a boom tip portion of a crane vehicle to which the steel pipe pile rotary press-fitting device of the present invention is attached. FIG. 3 is a main part enlarged explanatory view showing a state in which the leader attaching means in the steel pipe pile rotary press-fitting device of the present invention is attached to the boom tip of the crane vehicle, (a) before angle adjustment, (b) angle adjustment. Later.
[0041]
As shown in FIG. 2, when the steel pipe pile rotary press-fitting device of the present invention is attached to the boom tip of the crane vehicle, the boom tip 6 of the boom 4 is formed with a leader mounting hole 7 at the lower protrusion, A leader angle adjusting means mounting hole 8 is formed at the edge. The wire rope 9 in the crane means with which the crane vehicle is provided has a loop portion 9a at its tip.
[0042]
As shown in FIG. 3, in order to attach the steel pipe pile rotary press-fitting device 10 of the present invention to the boom tip 6 of the boom 4 of the crane vehicle, (1) The attachment hole 22 in the frame 20 of the reader attachment means 12 and the attachment hole 7 for the leader in the boom tip 6 are joined with a stopper so that they match. (2) The attachment hole 35 of the second arm 34 in the leader angle adjustment means 30 of the reader attachment means 12 and the attachment hole 8 for the leader angle adjustment means in the boom tip 6 are joined with a stopper, (3) The attachment hole 37 of the third arm 36 in the leader angle adjusting means 30 of the leader attachment means 12 and the loop portion 9a of the wire rope 9 in the crane means provided in the crane vehicle are made to coincide with each other so as to be joined with a stopper. .
[0043]
By the way, in FIG. 3, the dotted line which attached | subjected the code | symbol A has shown the axial direction of the steel pipe pile rotary press-in apparatus 10 of this invention. In the steel pipe pile rotary press-fitting device 10 of the present invention, as described above, the first leader means 14 and the second leader means 16 are provided in parallel, so that the leader attachment means located above the first leader means 14 is provided. 12, when the steel pipe pile rotary press-fitting device 10 of the present invention is suspended from the boom tip 6 of the boom 4 of the crane vehicle, the center of gravity is the second leader means as shown in FIG. 16, the situation where the axial direction A of the steel pipe pile rotary press-fitting device 10 of the present invention is not directly below (does not coincide with the vertical direction) occurs. Therefore, it becomes difficult to arrange the steel pipe pile rotary press-fitting device 10 of the present invention at a right angle to the ground.
[0044]
Therefore, it is necessary to adjust the axial direction A of the steel pipe pile rotary press-fitting device 10 according to the present invention by the leader angle adjusting means 30 so that the axial direction A is directly below (matching the vertical direction). As shown in FIG. 3B, when the third arm 36 in the leader angle adjusting means 30 is pulled by winding up the wire rope 9 of the crane means in the crane vehicle, the first arm 32 and the second arm The angle of the connecting portion with the 34 spreads and the reader mounting means 12 is pressed outward. Therefore, the third arm 36 in the leader angle adjusting means 30 is pulled by the wire rope 9 of the crane vehicle until the axial direction A of the steel pipe pile rotary press-fitting device 10 of the present invention is directly below (matches the vertical direction). Then, the steel pipe pile rotary press-fitting device 10 of the present invention can be arranged at a right angle with respect to the ground.
[0045]
FIG. 4 is a perspective explanatory view showing a steel pipe pile fixing means in the steel pipe pile rotary press-fitting device of the present invention, wherein (a) shows a state in which the steel pipe pile is gripped, and (b) shows a state in which the steel pipe pile is released. In the figure, reference numeral 48 is a steel pipe pile fixing means, and reference numeral 100 is a steel pipe pile. Reference numeral 90 denotes a lifting prevention means, which will be described later.
[0046]
As described above, the steel pipe pile fixing means 48 protrudes from the front surface of the lower housing 44 of the first leader means 14 of the steel pipe pile rotary press-fitting device 10 of the present invention toward the front corresponding to directly below the pile rotary press-fit means 18. That is, when the steel pipe pile is attached to the pile rotation press-fitting means 18, the steel pipe pile is projected at a position where the steel pipe pile can be gripped near the ground surface.
[0047]
The steel pipe pile fixing means 48 is supported by support arm parts 84a and 84b in which gripping parts 82a and 82b corresponding to the outer diameter of the steel pipe pile protrude to the position near the ground corresponding directly below the pile rotation press-fitting means 18, The support arm portions 84a and 84b are pivoted about pivot shafts 88a and 88b so as to be freely opened and closed. A movable base 86 that can be moved forward and backward by a cylinder or the like is connected to the support arm portions 84a and 84b via the joining members 87a and 87b. By moving the movable base 86 forward and backward, the support arm portion 84a and 84b is interlocked to open and close, and the steel pipe pile 100 can be gripped or released by the gripping portions 82a and 82b. The opening and closing (releasing and gripping of the steel pipe pile) of the steel pipe pile fixing means 48 can be performed manually directly, but it is preferable that the steel pipe pile fixing means 48 can be remotely operated by an electromagnetic valve or the like.
[0048]
FIGS. 5A and 5B are schematic rear views showing the floating prevention means in the steel pipe pile rotary press-fitting device of the present invention. FIG. 5A shows a state in which the limit switch is off, and FIG. 5B shows a state in which the limit switch is on. In the figure, reference numeral 90 denotes a floating prevention means. When the steel pipe pile rotary press-fitting device 10 of the present invention performs rotary press-fitting of the steel pipe pile, the press-fitting speed is too high (the press-fitting is too strong) as compared with the underground conditions (such as the hardness of the formation and the presence or absence of obstacles). Then, the steel pipe pile rotary press-fitting device 10 is lifted from the ground without the steel pipe pile excavating, which may hinder the rotary press-fitting work. In such a case, it is generally necessary to temporarily stop the work, and the work is delayed. Therefore, it is preferable to provide the lifting prevention means 90.
[0049]
In the floating prevention means 90, a cylindrical member 92 is fixed to the side surface of the lower housing 44 of the first reader means 14, and the detection rod 94 is movable up and down in the internal through hole of the cylindrical member 92. It is loosely inserted. The detection rod 94 has a head 95 with an upper end tapered at an upper portion thereof, and a dish-like foot portion 96 at a lower portion thereof, and the foot portion 96 is brought into contact with the ground. Accordingly, the steel rod pile rotation press-fitting device 10 is not lifted from the ground, and while the rotary press-fitting is normally performed, the detection rod 94 is positioned above [FIG. When the press-fitting device 10 floats from the ground and enters an abnormal rotational press-fitting state, the detection rod 94 slides and is positioned below (FIG. 5 (b)). The downward sliding of the detection rod 94 can be achieved by, for example, connecting the head 95 of the detection rod 94 and the cylindrical member 92 with a spring or the like so that the detection rod 94 is constantly urged downward. Good.
[0050]
The limit switch 98 is provided with a switch pin 97 that is constantly urged outward. When the detection rod 94 is on the upper side, the switch pin 97 is pressed by the head 95 of the detection rod 94. The limit switch 98 is turned off [FIG. 5 (a)]. On the other hand, when the detection rod 94 is at the lower side, the pressing of the switch pin 97 by the head 95 of the detection rod 94 is released, and the limit switch 98 is turned on. It is turned on [FIG. 5 (b)].
[0051]
While the limit switch 98 is off, the rotary press-fitting operation of the steel pipe pile is continued, and while the limit switch is on, the rotary operation of the steel pipe pile (driving of the third motor 65) continues. The press-fitting operation is decelerated or stopped (the first motor 45 or the second motor 55 is decelerated or stopped). Since a tip (not shown) is fixed to the tip of the steel pipe pile in the direction of excavation by welding or the like, excavation occurs due to rotational movement, and these are excavated when the formation is hard or there are obstacles. Can pierce or push away. When the lifting of the steel pipe pile rotary press-fitting device 10 is suppressed and the detection rod 94 returns upward, the switch pin 97 is pressed again by the head 95 of the detection rod 94 and the limit switch 98 is turned off [FIG. (A)], the press-fitting operation is resumed. In this way, the rotary press-fitting operation can proceed without interruption.
[0052]
FIG. 6 is an overall explanatory view showing the steel pipe pile rotary press-fitting device of the present invention attached to the boom tip of the crane vehicle. In the figure, reference numeral 2 denotes a crane vehicle. As shown in FIG. 5, in the steel pipe pile rotary press-fitting device 10 of the present invention, the boom 4 of the crane vehicle 2 may be extended by the length of the first leader means 14 and the leader attachment means 12. Therefore, the rotary press-fit operation can be performed in a safe and stable state, and the steel pipe pile can be rotary press-fit even in a relatively small crane vehicle, which is easy to handle. Moreover, even if there are obstacles above the work site, there are relatively few problems, and it is also suitable for rotary press-fitting short steel pipe piles.
[0053]
FIG. 7 is a schematic explanatory view showing a state before the start of rotary press-fitting of a steel pipe pile by the steel pipe pile rotary press-fitting device of the present invention. FIG. 8 is a schematic explanatory view showing a state during the rotary press-fitting of the steel pipe pile by the steel pipe pile rotary press-fitting device of the present invention. FIG. 9 is a schematic explanatory view showing a state where the rotary press-fitting of the steel pipe pile is completed by the steel pipe pile rotary press-fitting device of the present invention.
[0054]
In FIG. 7, the steel pipe pile rotary press-fitting device 10 of the present invention is extended to the maximum length, that is, the second leader means 16 is extended to the maximum along the first leader means 14, and the second leader means 16 is extended. The pile rotation press-fitting means 18 is also moved up to the maximum position. In this state, the steel pipe pile 100 is lifted by the pile lifting means 70 above the second leader means 16 and mounted on the pile rotation press-fitting means 18.
[0055]
In FIG. 8, the second leader means 16 is lowered along the first leader means 14, and the steel pipe pile 100 is dug by the length of the first leader means 14. In FIG. 9, the pile rotation press-fitting means 18 is lowered along the second leader means 16, and the steel pipe pile 100 is dug by the length of the second leader means 16. At this time, as described above, the steel pipe pile 100 can be dug more efficiently by rotating the steel pipe pile 100 with the pile rotation press-fitting means 18 as necessary.
[0056]
【The invention's effect】
As described above, according to the steel pipe pile rotary press-fitting device of the present invention, (1) Even if there are obstacles in the sky above the work site, you can rotate and press-fit without difficulty. (2) When rotating and inserting a short steel pipe pile, it becomes a leader having the necessary length, (3) Easy to handle, (4) It is not necessary to extend the boom of the crane vehicle to the height of the maximum length of the leader. (5) The steel pipe pile rotary press-fitting device capable of performing the rotary press-fitting operation with excellent stability and accuracy can be provided.
[Brief description of the drawings]
FIG. 1 is a conceptual explanatory view showing a steel pipe pile rotary press-fitting device of the present invention.
FIG. 2 is a conceptual explanatory view showing a boom tip portion of a crane vehicle to which a steel pipe pile rotary press-fitting device of the present invention is attached.
FIGS. 3A and 3B are main part enlarged explanatory views showing a state in which the leader attaching means in the steel pipe pile rotary press-fitting device of the present invention is attached to the boom tip of the crane vehicle, wherein FIG. 3A is before angle adjustment, and FIG. Later.
FIG. 4 is a perspective explanatory view showing a steel pipe pile fixing means in the steel pipe pile rotary press-fitting device of the present invention, wherein (a) shows a state in which the steel pipe pile is gripped, and (b) shows a state in which the steel pipe pile is released.
FIGS. 5A and 5B are schematic rear views showing the floating prevention means in the steel pipe pile rotary press-fitting device of the present invention, in which FIG. 5A shows a limit switch in an off state and FIG. 5B shows a limit switch in an on state.
FIG. 6 is an overall explanatory view showing the steel pipe pile rotary press-fitting device of the present invention attached to the tip of a boom of a crane vehicle.
FIG. 7 is a schematic explanatory view showing a state before the start of rotary press-fitting of a steel pipe pile by the steel pipe pile rotary press-fitting device of the present invention.
FIG. 8 is a schematic explanatory view showing a state in the middle of rotary press-fitting of a steel pipe pile by the steel pipe pile rotary press-fitting device of the present invention.
FIG. 9 is a schematic explanatory view showing a state of completion of rotary press-fitting of a steel pipe pile by the steel pipe pile rotary press-fitting device of the present invention.
[Explanation of symbols]
2: Crane vehicle, 4: Boom, 6: Boom tip, 7: Leader mounting hole, 8: Leader angle adjusting means mounting hole, 9: Wire rope, 9a: Loop part, 10: Steel pipe pile rotation of the present invention Press fitting device, 12: leader attaching means, 14: first leader means, 16: second leader means, 18: pile rotation press fitting means, 20: frame body, 22: attachment hole, 24: support disk, 30: leader angle Adjustment means, 35: mounting hole, 37: mounting hole, 40: first reader body, 41: rail guide, 42: upper housing, 43: upper plate, 44: lower housing, 45: first motor, 46: Leader position fixing tool, 48: steel pipe pile fixing means, 50: second leader main body, 51a, 51b: rail, 52: upper housing, 54: lower housing, 55: second motor, 57: frame, 58: Guide wheel, 60: base frame, 61: guide wheel, 64: Mounting portion, 65: third motor, 70: pile lifting means, 72: winding drum, 73: winding motor, 76: wire rope, 78: hook, 82a, 82b: gripping portion, 84a, 84b: support arm Part, 86: movable base, 87a, 87b: joining member, 88a, 88b: rotating shaft, 90: lifting prevention means, 92: cylindrical member, 94: detection rod, 95: head, 96: foot, 97 : Switch pin, 98: limit switch, 100: steel pipe pile, C1: first chain, C2: second chain, S1, S2, S3, S4: sprocket.

Claims (1)

Leader attaching means capable of being attached to the tip of the boom of the crane vehicle, a long first leader means provided at a lower portion of the leader attaching means, a first leader means provided in parallel with the first leader means, and the first A long second leader means provided so as to be movable up and down along the longitudinal direction of one leader means, and a steel pipe pile provided so as to be movable up and down along the longitudinal direction of the second leader means. A pile rotary press-fitting means, and a steel pipe pile rotary press-fit device used for rotary press-fitting of steel pipe piles,
The leader attaching means includes leader angle adjusting means for adjusting the angle in the vertical direction of the first leader means when suspended from a boom tip of a crane vehicle,
The leader angle adjusting means has a first arm whose one end is rotatably connected to the leader mounting means, one end rotatably connected to the other end of the first arm, and the other end is a boom tip of a crane vehicle. A second arm that is pivotally connected to the part, a third arm that is pivotally connected to the body of the second arm and has the other end connected to the wire rope of the crane means of the crane vehicle A steel pipe pile rotary press-fitting device characterized in that the vertical angle of the first leader means is adjusted by pulling the third arm by crane means of a crane vehicle .

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