SU887728A1 - Device for driving and pulling-out a row of piles by pressing - Google Patents

Description

one

The invention relates to the field of construction industry and can be used to sink and remove a number of anchor piles when performing static tests of piles, when pressing in piles, shells, dies, punching wells in the ground, stamping pits for foundations, local compaction of soils with static loads, etc. d.

A device for piling with indentation is known, comprising a guide frame mounted on a base machine with a power cylinder block attached to it, to the piston rods of which an intermediate plate is attached with the power cylinders of the additional block rigidly attached to it, the piston rods of which are connected to the immersed pile 1 .

It is also known a device for indenting a series of piles, comprising a power block with hydraulic jacks and a pile gripping mechanism 2 associated with it.

The drawbacks of such devices are the high cost and complexity of the installation, since installation of a hydraulic cylinder on each pile is required.

The closest to the proposed invention to the technical essence and the achieved result is a device comprising a power unit with jacks and connected with them by means of camshafts and rack and pinion gear movable to the traverse of the heads 3.

5 This device has a number of significant drawbacks, due to the fact that the tip is mounted on the upper ends of the submerged piles. The disadvantages include:

10 the impossibility of selectively diving or removing piles, i.e., piles can be submerged only by the whole group alternately in a certain sequence, and if for one reason or another one of the piles is not

15 may be immersed: in the ground (for example, because of solid inclusions in the ground), then the whole group of piles will not sink (the installation must be dismantled), which reduces the reliability of its work;

20 limited length of immersed piles due to the possible loss of stability of the piles with an increase in their length and the limited reach of the boom of the lifting mechanisms used to mount the rig to the working position, which limits the scope of application;

the complexity of installation and maintenance of the installation, since the tip in the working position is at a considerable height,

30 p to maintain installation in working

the position of the geo-hoisting mechanisms;

It is necessary to use anchor forces of the piles when extracting them, which makes the device design.

The aim of the invention is to provide the possibility of selectively plunging piles of unlimited length, increasing reliability and improving the operating conditions of the device.

The goal is achieved by the fact that in the device, which includes a power unit with jacks and connected with them by means of camshafts and rack-and-pinion gear and a movable traverse, the power unit is made in the form of a frame installed on the surface of the ground with nylon piles and rigidly attached to it from the inside by vertical directions in which the movable traverse is installed.

FIG. 1 shows the device, a general view; in fig. 2 - section aa and pa of fig. one; in fig. 3 - a copying unit for copying riKi with a pusher; in fig. 4 is a section jb-B in FIG. 3

A device for diving and retrieving a number of piles 1 comprises a power unit 2, which combines piles 1 with the possibility of their movement relative to each other. The power unit 2 is connected by means of hydraulic jacks (hydraulic cylinders; 3 with an axially moving along traverse 4 traversing b, on which the gripper control mechanism is mounted, which consists, for example, of hydraulic jacks (hydraulic nets) 6, copier rails 7, grippers 8, 9, 10 under the influence of springs I. The grippers 10 are placed on the power unit and serve to transfer the reactive forces arising from the unloading of the pile to the remaining pile in. The grippers 10 are controlled during the process of pressing the piles.

The device works as follows.

The power unit 2 is installed on the onor surface of the ground. All grippers 8, 9, 1U are converted to an open polio. The installation is charged with its forks that are inserted into the holes of the power unit. After that, the grippers 10 are closed, thereby producing the adhesion of the power unit with its own. The engagement of the claws 10 with the piles 1 can be carried out, for example, through the stops 12, evenly spaced along the pile.

When the power jacks 3 are activated, their pistons slide out and move the yoke 5 down, while at the same time immersing the first pair of piles 1. In the process of crushing the first pair of piles 1, the own weight of the power block is used as a weights along with the weight of the remaining piles. Further

additionally, anchoring forces generated by submerged ones are used.

Moreover, one or the other of the rail 7 is put into operation depending on the process taking place - indentation or removal of the piles. When pressed, the bottom rail 7 moves, and when removed, the top rail 7. At the initial moment, the grippers 8 and

9 are in the open position, while the rigidly coupled pushers 13 are led out onto the smooth cylindrical surface of the rail and pressed against the force generated by the arms 11.

The starting indentation process includes a hydraulic cylinder 6, which moves the lower rail 7 to a certain schag, while a pair of pushers 13 under the action of the same 11 are lowered into the recesses of the rail, and

consequently, the grippers 9 are rotated to contact with the stops on the pile 1. A coupling with the pile occurs. After pressing this pair of piles on the value of the specified pitch, the yoke 5 is transferred to the initial upper (for pressing) position using hydraulic cylinders 3. And they turn on the cylinder 6, the rail 7 moves one more step, while the previous pair of pushers 13 takes the initial position on the surface of the rail, and the subsequent pair of pushers 13 is lowered under the action of the springs 11 into the corresponding recesses of the rail, the associated grippers 9 are rotated, and

another pair of piles 1 is ready for immersion.

Thus, the pile is immersed to the required depth. The piles 1 are removed from the ground when the hydraulic jacks 3 are reversed. In this case, the grippers 9 are transferred to the open position using a copier rail 7, after which the rail is disconnected from the cylinder 6, and the rip rail 7, which controls the grips 8,

connects to hydraulic cylinder 6.

The rest of the operation of the device is similar to its work when diving.

Claims (2)

Invention Formula A device for diving and retrieving a series of piles is pressed, including a power unit with jacks, connected to them by means of camshafts and a rack-and-pinion gear movable traverse, characterized in that, in order to increase the reliability of the device and to ensure the possibility of selectively immersing piles of unlimited length The power unit is made in the form of a frame installed on the ground surface with through holes for the passage of piles and with vertical guides rigidly attached to it on the inner side, in which installed movable traverse. 5 B Information sources, 2. Gmoshinsky V. T. Equipment for taken into account when examining the pile driving, Review of foreign inventions1. USSR author's certificate3. USSR author's certificate No. 182063, cl. E 02D 7/20, 1965.5 No. 613008, cl. E 02D 7/20, 1976. 887728 teny. M., 1965.