CS251601B1 - In oposite direction periodically revolving casing - Google Patents

Abstract

The drive appts. induces partial rotation in a pile tube or well tube alternatively in the two opposing directions to assist driving into the ground. The system achieves low weight and is inexpensive to mfr. and transport. The driven tube has diametrically opposite external flat surfaces, each with a row of holes uniformly spaced over the tube length. A v-shaped frame has bolts on the inner surface of the open ends of its two members. The bolts engage in the holes in the tube sides when the screw spindle is tightened. The frame members are pivoted at the apex of the V and have a roller running in short track. Alternating partial rotation of the tube is induced by attachment of the frame apex to an excavator arm.

Description

BACKGROUND OF THE INVENTION The present invention relates to a casing rotatably rotatable in the opposite direction and provided with components for connecting it to the beams articulated to one another.

It is known to actuate the casing in reciprocating rotational motion in order to facilitate its insertion and / or withdrawal, via a lever mounted on the casing, by means of hydraulic working rolls, winch ropes, threaded spindles and the like.

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Such a device is described in DE-PS 833 337. Force ,, introduced into the lever is transmitted to print an NS ^{f i} c ⁱ n ^cl tions dip ^p with ^p ones, ^{the Ter} is the ^shell above ^and ce ^p AZN printing on ^e u ^p NAc ^COMES also members. Axially acting forces for pulling or boring casing for exerting additional pushing force at the ^t m ^p for the moto ou ^{Ste b} e ^{p t} zloven REN ^as CZ ^y in above ^{p o u} n ⁱ d ^{i p} sometimes inappropriate, i.e. ^with the na'kterou ^For example, hydraulic press rollers are articulated.

The disadvantage of the arrangement described in DE-PS 833 337 is that the transmission of the oscillating forces is carried out by frictional engagement, whereby the buckle and the casing are highly stressed by the wrapping. This leads to a high weight of the construction or to high production costs. Also, a thicker hoist or thicker support device must be provided for transporting the machine to the construction site.

The purpose VYN ^AL cut is created print an ^s t ^ I.01. Thus, ^{it should be} rotatable in ^the opposite direction from small equipment and small drilling costs. Furthermore, low conveying weights for casing pipes and machines are to be achieved.

The invention is based on a casing which is rotatable in the opposite direction alternately and provided with components for its connection to the beams articulated together. According to the invention, the casing of the casing is provided with two mutually opposite, longitudinal axis of the casing, as well as mutually parallel rows of openings serving for joining the beams, the openings being arranged at regular intervals and formed as blind holes.

In a preferred embodiment the beams are at the ends facing the výpežnici pins for connection with the openings and second ends of which are hinged together central EN em ^p ro ^p zavedeš sieves ^{the Pooh} with ^{Bi t} angenc ^heehaw ln ^of the ^{shell characterized} in PA ^from ni.ce .

According to another embodiment of the invention, the central pin is connected via a knuckle joint to a boom, for example a hydraulic excavator. The engagement of the pins in the openings of the casing allows for a smooth insertion force when the casing is countersunk or raised and the beam inclination to the working plane is constantly fluctuating.

During the counterboring or retracting of the casing, the beams, regardless of their length and the way of their drive, reach the end position, limited downwards or upwards, from which after pulling the pins from both opposite holes of axially parallel rows of casing openings positions on the casing and the pins engage in the holes there.

^Adj Ava above ažni ^{ce p} from ^{p l} e ^- in ^{Y is N,} climb amortized ^jo those ^of mechan ⁱ sm ^{U p} ro ute ^{No P} ^ y rum, casing, and further enables the transfer of large torques. Since creation, casing according to the invention does not use structural members surrounding výpežnici may be reinforcing, casing (for ^{the example,} borehole) is performed next to existing buildings.

As to the placement of the through holes on the casing of the casing, the following explanation can be given: From the top of the casing, the openings can be located on the circle of the casing of the casing so that they lie at both intersections of the diameter with this casing. By symmetrically displacing the holes on the circle in the direction of the beams articulated to each other, the connection of the two holes does not pass through the center of the circle, i.e. not the diameter of the circle, but its chord and the connection of the holes with the center of the circle.

The invention will now be explained by way of example with reference to the drawing.

As can be seen from the drawing, the casing 8 is in the form of a circular cylinder, on the shell of which two rows of openings 6 are located. These rows of apertures 6 are parallel to the cylinder axis and to each other; are impassable.

The apertures 2 are designed to engage pins 4 located at the ends of two beams 2 connected to each other at their other ends by a central pin 11. Between these ends of the beams 2 which support the pins 6 is provided a clamping device 4 with an expanding spindle.

At the ends that do not support the pins 8, the beams 2 are connected via the connecting eye 4 to the boom 10 of the hydraulic excavator and supported in a U-shaped guide 2 via a hinge 4 and a roller 8.

The device according to the invention works as follows:

In the drawing, it is shown that the ejector 4 is connected to the beams 2 by means of pins 4 in the form and force connection in order to engage them in such a manner that the beams are articulated to each other at first by rotating the spindle of the clamping device 4. so that the pins 6 located at the other ends of the struts 2 are brought into engagement with the openings 8 of the casing 4 when the spindle 6 is rotated in the opposite direction.

The beams 6 are connected to the boom 10 of the hydraulic dredger via the connecting eye 6, and the central pin 11, in order to actuate the reciprocating rotational movement. The beams are supported on the articulated slide 21 via a roller 8 on a U-shaped guide 2. Depending on the excavation of the soil, the casing 8 drops due to its own weight, reduced friction and possibly additional loads.

When the connection point between the beams 2 and the casing 8 is close above the working plane, the clamping device is released and the trunnion pins 6 are brought into engagement with the openings 6 above. If one casing 8 is lowered, the other casing is fitted with a crane hook excavator.

The beams 6 and the guides 2 are adapted so that they can be assembled manually, while the drive and mounting of the casing 6 is carried out by an excavator, as necessary for drilling. This dual function makes it possible to minimize machine and technical equipment for the casing.

Claims (3)

SUBJECT OF THE INVENTION The first boring casing rotatable alternately in opposite directions with parts for its Ojen with ^{p s p} s stringer .s ol. klcubově connected, characterized ^i, and in ^{EP Laslo} výpažn ^ e ⁽¹⁾ is provided with two opposing, longitudinal axis, casing (1) and mutually parallel rows of holes (5) serving for connection to the stringer (2) wherein the holes (5) are spaced at regular intervals and are formed as blind holes. A casing according to claim 1, characterized in that the beams (2) have pins (4) at the ends facing the casing (1) for connection to the openings (5) and are articulated to each other at the central pin (11). it applies the forces acting tangentially on the casing of the casing (1). A casing according to claim 2, characterized in that the central pin 11) is provided with a universal joint for connection to a boom (10), for example a hydraulic excavator.