JP2580782Y2 - Concrete pile sinking device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for sinking a concrete pile to a required depth underground using an auxiliary pile. 2. Description of the Related Art Concrete piles are generally submerged.
After excavating the ground with an auger to form a submerged hole, injecting soil cement and consolidation liquid etc. into the hole, insert it while rotating the concrete pile,
Due to the foundation footing of a building, the head of a concrete pile may be laid down to a predetermined depth underground. In such a case, an auxiliary pile (finally pile) is connected to the upper end of the concrete pile, the concrete pile reaches a predetermined depth, and then the auxiliary pile is separated from the concrete pile and removed. Conventionally, Japanese Utility Model Publication No. 58-47079, Japanese Utility Model Publication No. 64
-28482. These conventional auxiliary piles have a configuration in which a vertically long screw rod is provided in a cylindrical casing, thereby connecting and separating the auxiliary pile and the concrete pile. [0003] As described above, the conventional auxiliary pile is connected to the concrete pile by using a large number of long screw rods.
There are disadvantages in that the separating operation is extremely troublesome, and the structure is complicated and expensive. If the depth at which the concrete pile is laid is changed, the auxiliary pile must be manufactured and used in accordance with the depth each time, resulting in a large cost burden. In addition, since the length of the auxiliary pile is limited due to transportation or the like, if the depth of the concrete pile is deeper than the length of the auxiliary pile, the auxiliary pile is Additional auxiliary piles are added to the piles by welding and submerged, and when removing the auxiliary piles, complicated work such as fusing and separating the added auxiliary piles is required, making construction more troublesome and efficient. Bad and enormous cost. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and is easy to attach / detach to / from a concrete pile and a rotating device, and can surely transmit the rotation, and can freely add an auxiliary pile. It is an object of the present invention to provide a concrete pile laying device which can easily cope with various depths of the concrete pile. [0005] The configuration of the present invention for achieving the above object will be described with reference to the drawings corresponding to the embodiments. The two annular plates 4 and 5 are connected in parallel at an interval, and one of the annular plates 4 is provided with a plurality of circumferentially long engaging holes 7 and 7 and a plurality of bolt insertion holes 8 and 8 respectively. An auxiliary pile 1 in which the other connecting plates 3 and 3 are fixed in contact with the other annular plate in contact with the cylindrical body 2, and an engagement hole 7 in the annular plate 4 provided at the head end of the concrete pile 10 to be laid. , 7, and a hook piece 12, 12 which is detachable from a rotating member, and a rotating member 17 mounted on a rotating device.
A hook piece which is detachable from the engagement holes 7, 7 of the annular plate 4;
18, and a driving body 15 provided with a fixed pin insertion hole 19 provided so as to be able to communicate with the bolt insertion hole 8. An embodiment of the present invention will be described below with reference to the drawings. 1 to 3, reference numeral 1 denotes an auxiliary pile (Yatko pile) detachably connected to a concrete pile 10 to be laid, and connecting seats 3 at both ends of a cylindrical body 2 having substantially the same diameter as the concrete pile 10. It is formed so as to be fixed. The connecting seat 3 has two annular plates 4, 5 having substantially the same diameter as the cylindrical body 2 connected in parallel at a required interval via a plurality of connecting plates 6, 6. In addition, one annular plate 4 has
A plurality of engagement holes 7, 7 and bolt insertion holes 8, 8 formed long in the circumferential direction are provided at substantially equal intervals, respectively. The connection seats 3 and 3 have the other annular plate 5 joined to the end face of the cylindrical body 1 and are fixed by welding. [0007] In the concrete pile 10 connected to the auxiliary pile 1, the inverted L-shaped hook pieces 12, 12 which can be disengaged from the engaging holes 7, 7 of the connecting seat 3, are directed upward. A seat plate 11 protruding from the base plate is fixed. Reference numeral 15 denotes a driving body 15 for transmitting rotation to the auxiliary pile 1 and the concrete pile 10, and a rotating member having a square shaft 16 projecting from a rotating device (not shown) of a yagler used for laying the pile.
L-shaped hooks 18, 18 which can be freely engaged with and disengaged from the engagement holes 7, 7 of the annular plate 4 project downward from the lower surface of the circular plate 4. Further, the rotating member 17 has at least one of the fixing pin insertion holes 19 communicating with the bolt insertion holes 7 of the annular plate 4 when the engagement holes 7 and the hook pieces 18 are in a locked state where they cannot be disengaged vertically. The above is provided. When the concrete pile 10 is laid, the auxiliary pile 1 is connected to the head end of the concrete pile 10 as shown in FIG.
Are linked. That is, the hook of the concrete pile 10
The engaging holes 7 of the connecting seat 3 at the lower end of the auxiliary pile 1 are inserted into the engaging holes 7 of the connecting seat 3 at the lower end of the auxiliary pile 1 and the driving body 15 is inserted into the engaging holes 7 of the connecting seat 3 at the upper end of the auxiliary pile 1. The hooks 18, 18 are pushed in, and the driving body 15 is rotated in the direction of arrow a in FIG.
As a result, the hooks 18, 18 hit one ends of the engaging holes 7, 7, and are connected so as not to be separated from each other in the axial direction. When the driving body 15 is further rotated in the same direction, the auxiliary pile 1 is also rotated in the direction of the arrow a, and the hooks 12, 12 of the concrete pile 10 hit one end of the engaging holes 7, 7, and both are mutually turned. It is coupled so that it is not detached in the axial direction. In the above state, if the driving body 15 is connected to the rotating device and suspended while rotating in the direction of the arrow a, the concrete pile 10 is gradually lowered while rotating. When the concrete pile 10 reaches a predetermined depth from the ground surface, the auxiliary pile 1 is separated from the concrete pile 10 and lifted to the ground. In this case, as shown in FIG. 5, the fixing pin 20 is inserted into the fixing pin insertion hole 19 of the rotating member 17 and the bolt insertion hole 8 communicating with the fixing pin insertion hole 19, and the auxiliary pile 1 and the driving body 15 are inserted. Are restrained from moving in the plane direction. The fixing pins 20 may be inserted when the concrete pile 10 is rotated and set. In this case, if the diameter of the fixing pin insertion hole 19 is slightly larger than that of the bolt insertion hole 8, it is possible to prevent a load from being applied to the fixing pin 20 when the driving body 15 rotates forward.
When the driving body 15 is reversed in the direction of the arrow b, the auxiliary pile 1 is reversed without being able to be separated from the driving body 15 in the vertical direction, and the hooks 12, 12 of the concrete pile 10 are engaged with the engaging holes 7,
7 comes into contact with the other end and can be separated from each other. Therefore, when the rotating device is raised, the auxiliary pile 1 is separated from the concrete pile 10 and lifted up to the ground together with the driving body 15. After the lifting, the auxiliary pile 1 is separated from the driving body 15 by removing the fixing pin 20. This auxiliary pile 1 can also be used for submerging the next concrete pile 10. The above-mentioned auxiliary pile 1 is characterized in that not only the connection and separation with the concrete pile 10 but also the connection and separation of the auxiliary piles can be easily performed. As shown in FIG. 6, the auxiliary piles are joined by joining one of the annular plates 4 and 4 to each other and tightening the bolts and nuts 21 and 21 through the bolt insertion holes 8 and 8. It can be carried out. Also, if the bolts and nuts 21 are removed, they can be easily separated. The depth of the concrete pile from the ground where it is laid varies depending on the construction site.
Therefore, it is possible to prepare a plurality of auxiliary piles having two lengths, for example, 3 m and 5 m, and to cope with them by various combinations. According to the present invention, the auxiliary pile, the concrete pile, and the driving body having the above-described structure are used. Therefore, the connection and separation between the auxiliary pile, the concrete pile, and the driving body can be performed very easily. As well as secure and strong connection. Therefore, the concrete laying operation can be performed easily and efficiently. In addition, it is easy to combine and separate auxiliary piles, so by preparing several types of auxiliary piles with different lengths and using them in various combinations, it is easy to construct concrete piles with different sinking depths. Can respond to. Moreover, the auxiliary pile is simple in structure, can be provided at low cost, and can be used repeatedly.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention, and is a perspective view showing components in a separated state. FIG. 2 is a side view of an auxiliary pile. FIG. 3 is a plan view of the same. FIG. 4 is a partially cutaway front view showing a connection state between an auxiliary pile, a concrete pile, and a driving body. FIG. 5 is a partially cutaway front view showing a pin connection state between the auxiliary pile and a driving body. FIG. 6 is a partially cutaway front view showing the connection between the auxiliary piles. [Description of Signs] 1 Auxiliary pile 2 Cylindrical body 3 Connecting seat 4,5 Annular plate 6 Joint plate 7 Engagement hole 8 Bolt insertion hole 10 Concrete pile 11 Seat plate 12 Hook piece 15 Driver 16 Square shaft 17 Rotating member 18 Hook 19 Fixing pin insertion hole 20 Fixing pin 21 Bolt. nut

Claims (1)

(57) [Claims for registration of utility model] Two annular plates are connected in parallel at both ends of a cylindrical body at an interval, and one of the annular plates has a circumferentially long engaging hole and a bolt insertion hole. A plurality of connection seats, an auxiliary pile formed by fixing the other annular plate in contact with the cylindrical body and an engagement hole of the annular plate provided at the head end of the concrete pile to be laid; A hook that is detachable, and a fixed pin insertion hole provided in a rotating member mounted on the rotating device so as to be able to communicate with the hook and the bolt insertion hole that are detachable from the engagement hole of the annular plate. A concrete pile laying device, comprising a driving body provided with a concrete pile.