LINDEMAN, Mikko (Nikkiläntie 12, Hämeenlinna, FI-13100, FI)
KUIVAMÄKI, Pentti (Heikkiläntie 5, Hyvinkää, FI-05460, FI)
LINDEMAN, Mikko (Nikkiläntie 12, Hämeenlinna, FI-13100, FI)
| CLAIMS 1. Apparatus for forcing poles and piles into the ground which apparatus comprises a fastening body (1) for attaching it to a working machine, a structure attached to the fastening body with the help of suppression pieces (14) which structure comprises a vibrator unit and gripping jaws (2); (3) for gripping the pieces to be forced in which case one (2) of the gripping jaws is stationary and the other (3) is turnable and squeezing jaw and the compression force of said jaw (3) can be directed to the piece to be forced in order to keep the piece in place between the jaws (2); (3) during the forcing, characterized in that the turnable and squeezing jaw (3) comprises one or several turning cylinders (16) that can be located freely at the elevation direction of the jaw (3) the turning force(s) of which turning cylinder(s) can be separately directed to the gripping surfaces of said jaw (3) with the help of arms (5) and (6), such as to the upper (17) and lower (18) gripping surface of the jaw and the apparatus further comprises a structure combining said arms (5); (6), such as a pipe (4) that is located in the direction of a swiveling axis line (13) of said jaw (3) and which pipe is adjusted to direct the turning force of all the turning cylinders (16) to any of the gripping surfaces (17); (18) of the jaw (3) or to all of them along with the jaw body. 2. Apparatus according to claim 1, characterized in that the pipe (4) is adjusted in such a way that the axis line (13) of the swiveling axis of the jaw (3) stays inside it. 3. Apparatus according to claim 1, characterized in that the gripping surfaces of each jaw (2) and (3) are divided into two parts to be upper gripping surfaces (12); (17) and lower gripping surfaces (12"); (18). 4. Apparatus according to claim 1, characterized in that the gripping surfaces of each jaw (2) and (3) are uniform and essentially at the height of the jaws. |
Invention relates to an apparatus for forcing poles and piles into the ground which apparatus comprises a fastening body for attaching it to a working machine, a structure attached to the fastening body with the help of suppression pieces which structure comprises a vibrator unit and gripping jaws for gripping the pieces to be forced wherein at least the other one of the gripping jaws is a turnable and squeezing jaw and the compression force of the mentioned jaw can be directed to the piece to be forced in order to keep the piece in place between the jaws during the forcing.
Previously an apparatus according to the preamble for forcing poles and piles into the ground is known for example from the publication EP 2 003 252 Al . In this publication a previously known structure is shown in which structure one jaw is stationary and two turnable jaw arms located on top of each other to a distance from each other function as a movable jaw. Each turnable jaw has its own turning cylinder with the help of which turning cylinder the jaw arm attached to them is turned. The turning cylinders of each jaw arm are attached to function at Hie same time.
This kind of solution in which each turnable jaw arm is separate without a structure combining them and conveying turning force has the disadvantage that when the piece hinges on only one squeezing jaw the compression force of the other turning cylinder cannot be utilized when the piece is being gripped and it is being held. In that case one jaw only squeezes directly against the stationary jaw without there being anything between them. Especially when the poles are being lifted up by forcing there is so little to see of the pole at the starting situation that only with the lower jaw of the equipment one can grip the pole.
In order to eliminate these disadvantages a new apparatus has been developed with which apparatus the compression efficiency is improved only with one jaw when the piece is being gripped. It is characteristic for the apparatus according to the invention that the turnable and squeezing jaw comprises one or several turning cylinder(s) of the jaw which turning cylinder(s) can be located freely in elevation direction the turning force(s) of which turning cylinder can separately be directed to the gripping surfaces of the mentioned jaw with the help of the arms, such as to the upper and lower gripping surface of the jaw and the apparatus further comprises a structure, such as a pipe, combining the mentioned arms which pipe is located in direction of the swiveling axis line of the mentioned jaw and which pipe is adjusted to direct the turning force of all turning cylinder to any gripping surface of the mentioned jaw or to all of them along with the jaw body.
The advantage of the apparatus according to the invention is the fact that one or several turning cylinders) can be located to the turnable and squeezing jaw at altitudes that can be freely selected. The pivots of the swiveling axis of the jaw in relation to the body can be arranged to a sufficient distance from each other in which case when the impact force is being directed to the piece through the jaw, the pivots get the least stress. The piece can be gripped with the lower edge of the jaw or with the lower gripping piece and in spite of that the force of all turning cylinders can be directed to this compression due to the structure of the jaw having torsional stiffness.
hi the following the invention is described more detailed by referring to the accompanying drawings in which
Figure 1 shows a forcing equipment of a pole/pile diagonally shown. Figure 2 shows a jaw being moved supported by a reversal link as a front view.
In the figure 1 there is a forcing equipment of poles/piles equipped with a body 1. The equipment is attached from the body 1 for example to the end of the extension arm of a digging machine. Another body, an equipment body that comprises a hammer gear, such as a vibrator device that is located underneath the lid 15, is attached to the body 1 through rubber dampers 14. Further the equipment body comprises a jaw arrangement for gripping the poles/piles. In this implementation example one jaw 2 is stationary and it has measure regarding the elevation direction in such a way that two gripping pieces 12 and 12 Λ can be attached to it to a distance from each other. Thus the oblong pieces are gripped at two locations in which case the pieces keep well their direction during the jaw grip.
One jaw 3 is movable and its swiveling axis 13 is near the vibrator unit. The jaw 3 is turned with the help of the cylinders 16 the one of which is at the altitude of the lower part of the jaw 3 and the other is at the altitude of the upper part (not shown in the figure). The pins 19 located at the swiveling axis line 13 or a whole axis 19 are attached at their lower end to the equipment body with the help of a part 7 and at their upper end through another part 7. The distance of the pivot mountings of the jaw has thus been maximized.
The turning force is conveyed from the cylinder 16 to the pipe 4 with the help of the arms 6 and 8 which pipe combines the upper 5 and the lower jaw arm 6 to each other. The remaining structure of the pipe 4 and the jaw is made to be robust so that the force of whichever cylinder 16 can be directed to be additional force to the line of one cylinder 16 in other words at the location of the altitude of the other cylinder at the jaw grasper 17 or 18 without the structure of the jaw in the jaw 3 to be twisted. Only the minimum structure of the jaw 3 is shown in the figure 1 in other words the necessary support structures in the case of two cylinders 16. Naturally stiffener structures can be added to avoid the warping of the jaw 3.
In the figure 2 the jaw 3 of the figure 1 is shown directly from the front. The jaw 3 has two gripping pieces 17 and 18 at the upper and the lower part. The gripping pieces 17, 18 can be detached and replaced with desired form pieces according to the profiles of the piles and poles. Also the gripping piece can be uniform and be at the height of the jaw 3 for example when wooden poles are being forced in which case a large gripping surface is formed. The other ends of the cylinders 16 are attached to the pins 10 and 11. The turning force is conveyed from the pins 10, 11 to the pipe 4 through the arms 5, 9 and 6, 8 and further through the structure of the jaw 3 to the gripping pieces 17, 18. The pipe 4 is most advantageously located in such a way that the swiveling axis line 13 is directed inside the pipe 4.
When the jaw 3 is stiff there can be one or several turning cylinders 16 and the location of them in elevation direction can be freely selected. The piece can be located between the j aws in any way but the force of all the turning cylinders 16 will always be conveyed to the compression point even though there would be only one compression point between the jaws 2 and 3.