JPH0724419Y2 - Combined holder mechanism for pile burying machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a holder mechanism for both a pile and a rod in a pile burying machine.

[Prior Art] A conventional pile burying machine used for construction work and civil engineering work has a structure described in, for example, Japanese Patent Laid-Open No. 62-185917. An example of this will be described with reference to FIG. 3. Reference numeral 31 denotes a lower traveling body, a skit 32 is provided thereon, and an upper skit 33 is further provided thereon.
It can slide back and forth and left and right with respect to the skit 32. The skit 32 is provided with an outrigger 34 and can be supported on the ground. A crane 35 and a rod container 36 are provided on the skits 32, 33, and a leader 37 is provided upright. The leader 37 is provided with a drill head 38 including a motor 40, a swivel, a rod chuck 39, etc., and can be vertically moved along the leader 37 by a feeding device 41. It is for gripping and drilling holes and burying piles. The leader 37 has a pile holder for holding piles.
42 and a rod holder 43 for holding the rod are provided.

In the conventional rod holder 43, a semicircular curved piece member is attached to the tip of a long arm, and only a pair of such devices are provided on the left and right, and the opposite side of the arm from the piece member is pin-joined to the main body device, respectively. Then, the arm is swung in the shape of an arc around the pin portion, and the rod holder 43 is a mechanism for holding the rod by bringing the semicircular curved piece member at the tip into contact with the rod. It is provided on the pile holder 42.

As for embedding the pile, first, as shown in FIG. 4 (A), the mouth casing 50 is embedded at the embedding position of the pile to prevent collapse of the drilled hole. In this state, as shown in FIG. 4 (B), water is jetted from the tip portion 52 of the excavating rod 51 to impart rotation and propulsive force to excavate the ground and drill holes. After drilling to a predetermined depth (planned depth), stop the water supply and switch to cement milk supply, and as shown in Fig. 4 (C), squirt cement milk and apply reverse rotation and reverse propulsion to excavate. Rod 51
Pull up. At the position where a predetermined layer 53 of cement milk is formed, the supply of cement milk is stopped and the drill rod 51 is pulled up. Next, the excavation rod 51 is removed, the pile is attached, and as shown in FIG. 4 (D), the pile 54 is inserted into the hole and the burying is completed.

[Problems to be solved by the invention] In such a conventional construction method, the drill rod 51 and the pile 54 are
A clamp such as a guide and a holder is required to set the shaft, and this clamp must also be able to hold the shaft center vertically. Moreover, depending on the burial depth of the pile 54, that is, the drilling depth, the excavating rods 51 must be sequentially connected by connecting rods, and many piles 54 must be used. If the axes of the two do not match, the connection cannot be made, which is not preferable. However, the conventional rod holder swings out in an arc shape as described above,
The position where both meet is the position where it abuts the rod, and since there is only one pair of piece members that hold the rod, if the rod is placed in a bent state, this conventional rod holder will bend. The rod is held as it is, and it is difficult to center the rod at the original excavation position and hold it straight. In addition, the rod holder and holders such as piles are located in different places, and only one holder position can be used for the rod.Therefore, it is necessary to install multiple holders in different vertical positions, It becomes difficult to use more than one due to locational restrictions, and it is impossible to equip the conventional device with only a pair of rod holders as described above, and if the rods are placed in a state of being bent at an angle, I was forced to keep it bent. As described above, in the conventional apparatus, there was a concern about centering the rod at the original excavation position and accurately positioning the rod.

[Means for Solving the Problem] In order to achieve the above-mentioned object, the present invention provides a pair of clamp members, which are curved in a concentric shape so as to face each other when they encounter members on the opposite side, in a facing direction. It is connected to a movable body that moves horizontally, and is provided so as to move horizontally, and when encountering members on the opposite side, clamp pieces that bend in a concentric shape facing each other with the axis line at the same position Two pairs of the clamp pieces are provided in the clamp member, the two pairs of the clamp pieces are built in the clamp member, and the two pairs of the clamp pieces are retractable.

[Operation] The movable bodies face each other and move horizontally. At the same time, the clamp members with a wide width that are housed in the two pairs of clamp pieces are also horizontally movable facing each other. Therefore, in this clamp member, a member having a large diameter such as a pile can be pressed with the clamp piece retracted, and the clamp member can be accurately centered and held at a predetermined position.

Further, when the clamp member is moved horizontally and the clamp pieces are also moved so as to face each other, a pair of upper and lower clamp piece rods or the like having a small diameter are pressed to accurately center the clamp piece at a predetermined position. Can hold

As described above, the holder of the present invention can hold a member having a large diameter and a member having a small diameter at the same place, and it does not take a lot of space to install the holder.

[Embodiment] The present invention will be described in detail with reference to the embodiments shown in FIGS. 1 and 2.

FIG. 1 is a perspective view for explaining the basic principle of the present invention. First, when explaining the basic principle in the figure, 1 is a movable body, which is slidably mounted on a guide shaft 2. A drive device, for example, a hydraulic cylinder 3 is connected and is movable along the guide shaft 2 in the arrow direction. A clamp member 4 is fixedly mounted on the movable shaft 1 and moves together with the movable body 1. The clamp member 4 is curved so as to easily hold a pile or a rod. The clamp member 4 includes a clamp piece.
5a and 5b are provided at the same axis position so that they can be vertically retracted,
A drive device fixed to the movable body 1, for example, cylinders 6a and 6b is connected to the clamp pieces 5a and 5b, and the clamp pieces 4 project and retract in the same direction as the movable direction of the clamp member 4. The clamp pieces 5a, 5b are also curved like the clamp member 4.

As for the device, the same devices are provided so as to face each other, the movable body 1 also moves in the opposite direction, and the clamp member 4 and the clamp pieces 5a, 5b also move in the opposite direction. For example, when the movable body 1 and the clamp member 4 move in the direction of the arrow A, those on the opposite side move closer to each other, and when they move in the direction of the arrow B, move away from each other. . This movement does not have to move symmetrically at the same time, but when holding the pile or rod, the movement of symmetrical movement opposite to each other is most preferable. The clamp member 4 and the clamp pieces 5a and 5b are curved so as to face each other and form concentric circles. Further, the clamp pieces 5a, 5b are opposed to each other to form a pair, and two pairs are provided on the same vertical axis.

Therefore, the movable body 1 can be moved in the direction of arrow A by the cylinder 3, and the piles or rods can be positioned between the opposing clamp members 4, 4 and pressed against each other to be held, or moved in the opposite direction of arrow B. By doing so, the retention can be released. Further, by moving the clamp pieces 5a, 5b by the cylinders 6a, 6b and retracting them, rods or piles can be held or released between the clamp pieces 5a, 5a and 5b, 5b.

FIG. 2 is a plan view showing an embodiment of the present invention, and since it is the same as the basic principle shown in FIG. 1, the same parts having the same functions are designated by the same reference numerals.

The guide shaft 2 is installed between shaft mounting members 8 of the frame 7, and movable bodies 1 and 1 are slidably provided so as to oppose the guide shaft 2. A drive device, for example, a cylinder 3 is connected to the movable bodies 1 and 1 and moves in opposite directions. The cylinder body of the cylinder 3 is fixed to the movable body 1, and the rod side thereof is fixed to the member 9 of the frame 7 so that the movable body 1 can be moved.

Clamp members 4, 4 are fixed to the movable bodies 1, 1 so as to face each other, and move together with the movable bodies 1, 1 in the opposite direction. The clamp members 4 and 4 are curved so as to face each other and form concentric circles, and the facing surfaces thereof protect a held object such as a pile or a rod, and a rubber 4a for preventing slippage.
It is tensioned.

Clamp pieces 5a, 5b are built in the clamp members 4, 4 so as to be retractable, and a drive device fixed to the movable body 1, for example, cylinders 6a, 6b are connected to the clamp pieces 5a, 5b. , Appear in the opposite direction. This clamp piece 5
Similar to the clamp member 4, the a and 5b are curved so as to face each other to form a concentric circle, and a pair of the a and 5b are provided so as to face each other on the same axis line.

Therefore, the present invention operates similarly to the basic principle shown in FIG. That is, the clamp members 4, 4 can be moved in the arrow direction along the guide shaft 2 together with the movable bodies 1, 1 by the cylinders 3, 3. Therefore, the casing 10, the pile 11, the rod 12 and the like can be held by positioning the casing 10, the pile 11 and the rod 12 between the opposing clamp members 4, 4 and pressing and sandwiching them.

Further, the clamp pieces 5a, 5b move together with the clamp members 4, 4 and, at the same time, move in and out in opposite directions by the cylinders 6a, 6b. Therefore, the rod 12 or the pile 11 can be held by positioning the rod 12 or the pile 11 between the clamp pieces 5a, 5a and 5b, 5b and pressing and sandwiching them. By the way, with the clamp members 4, 4, the casing 10 and the pile 11 with a relatively large diameter are
The clamp pieces 5a, 5a, 5b, 5b preferably hold the rod 12 having a relatively small diameter.

[Advantages of the Invention] As described above, according to the present invention, one holder mechanism can also serve as a holder for a casing, a pile, a rod, and the like. Therefore, the number of holders to be provided can be reduced, and even if the number is reduced, the holding reliability does not decrease. Further, even if there is a restriction in place, it is provided because each holder is not provided. Moreover, not only large diameter members such as piles that require centering but also small diameter members such as the rod 12 that require centering, the clamp pieces 5a, 5b have the same axis and are vertically aligned. Since two pairs are provided in, it can be held concentrically.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating the basic principle of the present invention, FIG. 2 is a plan view illustrating an embodiment of the present invention, FIG. 3 is a side view showing an example of a pile burying machine, and FIG. A), (B),
(C), (D) is explanatory drawing which shows a pile burying process. 1 ... Movable body, 2 ... Guide shaft, 3, 6a, 6b ... Cylinder, 4 ...
Clamp member, 5a, 5b ... Clamp piece.

Claims (1)

[Scope of utility model registration request] 1. When a member on the opposite side is encountered, a pair of clamp members, which are curved so as to concentrically face each other and are curved so as to be concentric with each other, are connected to a movable body that horizontally moves in the opposite direction to move horizontally. And when two members on the opposite side are encountered, two pairs of upper and lower clamp pieces that are curved so as to face each other and form a concentric circle are provided with the axis at the same position.
A dual-purpose holder mechanism in a pile burying machine, characterized in that the two pairs of clamp pieces are built in the clamp member, and the two pairs of clamp pieces are retractable.