DD250729A5 - DEVICE FOR DRIVING FOUNDATION ELEMENTS IN EARTHHOES - Google Patents

Abstract

1. A system (31) for driving foundation or holding elements, such as profiles or the like, into layers of earth, more especially foundation tubes (28) for overhead power lines along railway tracks (5), by means of a vibration unit (34) mounted on a laterally and vertically displaceable load jib, such as a cable crane (11), a vibration damper being arranged between load holding means, particularly the load hook (22) of the crane (11), and the vibration unit (34) for acting on the element to be driven in, characterized in that the vibration damper (35) connected to the vibration unit (34) by a cable holder (36) is formed by a hydraulically operable cylinder-and-piston assembly comprising two hydraulic cylinder chambers (38, 39) and the cylinder is connected to diaphragm accumulators (42, 43) filled with pressure oil or gas, each hydraulic cylinder chamber (38, 39) being connected to a shut-off member (44, 45) for the supply of pressure oil and each diaphragm accumulator (42, 43) being preceded by a manometer (46) for controlling the system gas pressure.

Description

Field of application of the invention

The invention relates to a device for driving foundation elements, in particular holding elements, such as profiles, in earth layers, in particular foundation pipes for poles on railway tracks, by means of a, on a side and height adjustable load boom, such as a cable crane, arranged vibrating device.

Characteristic of the known state of the art

It is - according to EU application 0102322 - a device of this type or a method for driving in pile foundation piles for poles on a railway track known. Prefabricated concrete piles can be used as a foundation for the erection of catenary masts along railway tracks by means of a piling device drivable on the track. Leitungs Each pile is then connected to a pole. This known device is arranged on a track-traveling flatbed trailer and consists of a cable excavator with a boom to which a so-called leader is provided with a longitudinal guide. A ram adjustable in height via a cable winch can be moved up and down along this longitudinal guide in order to load the foundation pile to be collected. A much higher performance for driving such foundation or holding elements, such as such foundation piles for pylons, is achieved by using vibrators, which perform the driving or piling much more accurate as a vibrating hammer. Particularly advantageous are so-called hydraulic vibration exciters, for example according to the CH-PS 641 064, with which a particularly rapid, efficient and accurate driving of such elements is possible. The disadvantage of using such hydraulic vibratory devices consists essentially in the fact that the transmitted to the einzurammende Good strong vibrations on the load-holding means, in particular the load hook and the rope attached thereto, are also transmitted to the crane itself, thereby collecting these forces to be able to again, a relatively efficient and in construction much stronger crane is required. Since such einzutreibende foundation pipes, for example, up to 4 m long and must be introduced in this length as a substantial whole in the soil on which then the actual masts are fixed, these pipes also have a high weight, which in addition to the weight of hydraulic vibratory device makes a relatively large crane with a high group of structures required to get at least some of the occurring vibration alternating stresses or to the relatively large vibration bandwidths under control. With smaller dimensions of the crane beyond the risk of premature failure of the crane jib or other crane components, such as slewing bearing, sliding or even the base construction.

Object of the invention

The aim of the invention is to bring a device for driving foundation elements, in particular holding elements, such as profiles, in earth layers, in particular foundation pipes for pylons on railway tracks by means of a, on a side and height adjustable load boom, such as a cable crane, arranged vibration device for use with which an improved job execution can be achieved.

Explanation of the essence of the invention

The invention is based on the object, a device for driving in foundation or. Holding elements, such as profiles od. Like., In soil layers, especially foundation pipes for poles on railway tracks, by means of one, on a side and height adjustable load boom, such as a cable crane, arranged vibrating device to create a focused on the work item vibration registration in a possible application guaranteed on both sides of the track body and easier centering of the elements.

The object is achieved in that between load-holding means, in particular the load hook of the crane, and the vibration device for acting on the element to be driven, a hydraulically actuated vibration damper is arranged. By this interposition of a hydraulically acted vibration damper all harmful vibrations are kept away from the crane and also, for example, from the crane-carrying vehicle, whereby a much simpler and in terms of power consumption smaller crane for such work is usable. In addition, the life of all other associated with the crane machine parts, bearings u. Like. Substantially increased. By this effective improvement or elimination of the vibrations on the crane itself and, for example, the vehicle connected thereto, the vehicle itself can advantageously be used for further tasks or transport areas in connection with such work procedures. According to a further feature of the invention, the vibration damper is suspended directly on the, preferably above a cable drum or winch height adjustable load hook and connected to its lower end, preferably also via a rope posture, preferably with the hydraulically acted vibration device. This design provides a free from the load crane as well as with respect to the hydraulic vibration device of vibration transmissions bearing of the vibration damper, so that the vibrations caused by the hydraulic vibration device are transmitted in a reduced size or effect on the vibration damper.

A preferred embodiment of the invention further consists in that the hydraulic vibration device is designed as a hydraulic hammer and for clamping or transporting the element to be driven, in particular the foundation tube. This training ensures on the one hand a secure mounting of the elements to be driven by the hydraulic vibration device and on the other hand allows a particularly effective transmission of the vibrations to the element to be driven.

According to a particularly preferred feature of the invention, the hydraulic vibration damper is formed by a hydraulically loadable cylinder-piston arrangement, wherein the two chambers of the hydraulic cylinder are connected on both sides of the piston via services each with independent, with pressure oil or gas-filled diaphragm accumulators. By virtue of this design or arrangement, the hydraulic cylinder-piston rod can always be fixed between two prestressed oil acids, whereby the vibrations transmitted by the hydraulic vibration device or the hydraulic hammer are discharged via the cylinder-piston rod to the prestressed hydraulic oil column in the cylinder become. In this case, the gas pretensioning pressure can be set into oscillation in the diaphragm accumulators via the cylinder oil column, as a result of which the larger casing of the hydraulic cylinder, which is connected to the load hook, is largely kept free from vibrations. Appropriately, in this case, the oil pressure in the adjacent chamber of the vibration device of the hydraulic cylinder compared to the oil pressure in the adjacent chamber hook and the gas pressure in the vibration device adjacent membrane memory also greater than the gas pressure in the load hook adjacent diaphragm accumulator formed. As a result, the vibrations occurring by the hydraulic vibration device are continuously reduced stepwise by the vibration damper, which at the load hook even then virtually no more vibrations - or only those that are negligible - can come into effect. Another feature of the invention is that each hydraulic cylinder chamber is connected to a shut-off valve for the pressurized oil supply, preferably with a venting element, and each diaphragm accumulator is preceded by a pressure gauge for controlling the gas bias. This arrangement ensures a particularly fine tuning control according to the more often different, to be driven foundation or holding elements. A particularly advantageous arrangement according to the invention is that the vibration damper is suspended with the hydraulic cylinder on the load hook and the end of the piston rod is designed for receiving the hydraulic vibration device. This type of intermediate circuit of the vibration damper has the advantage that sufficient space freedom is created in the region of the piston rod, so that no disturbances occur during the driving process in the region of the hydraulic vibration device.

According to a particularly preferred embodiment of the invention, the device is provided with a provided with rail chassis and the side and height adjustable crane vehicle associated with which the connected to the crane via a winch hydraulic vibratory device is movable, with the hydraulic vibrating device via the hydraulic acted upon vibration damper connected side and height adjustable crane is centrally located on the.Vehicle, which is formed on both sides of the crane pivot for substantially vertical storage of foundation pipes for poles for driving left or right of a railway track, wherein on both longitudinal sides of the machine frame of the vehicle via one Hydraulic cylinder-piston arrangement acted upon and pivotable about an axis substantially parallel to the track plane Zentrierbzw. Guide bracket are arranged. With such a device, the stacking or storage of such foundation pipes for a quick and accurate laying of a large number of such pipes can be performed in a particularly advantageous manner on the vehicle kept free of vibration. With the centering or guide arm on both sides of the chassis frame can optionally be made to drive the left foundation pipes left or right of a railway track, with a rapid and accurate investment of these foundation pipes at the beginning of the driving operation by centering the same can be achieved.

Finally, according to a further feature of the invention, the hydraulic vibration damper connected to the same, provided on the vehicle hydraulic supply device as all other hydraulic drives, in particular the drives for lateral and vertical adjustment of the crane, the hydraulic vibration device and the seitenverschwenkbaren boom, creating a particularly economical and efficient facility is created.

embodiment

The invention will be described in more detail below with reference to an embodiment. In the drawing show:

Fig. 1: a side view of a track-traveling vehicle with the device;

2 shows a plan view according to FIG. 1;

3: an end view according to III of FIG. 1, but with seitenverschwenktem cable crane and

4 shows a circuit diagram of the arranged vibration damper.

The vehicle 1 illustrated in FIGS. 1 and 2 is equipped with rail carriages 2 for moving on a track 5 formed by rails 3 and sleepers 4. 6 is a traction drive, 7 a driving control panel, 8 a power supply device and 9 denotes a hydraulic supply device. On the machine frame 10 of the vehicle 1, a side and height-adjustable cable crane 11 for continuous two-sided pivoting to 360 ° is provided approximately centrally, which is equipped with a provided with a control panel 12 crane cab 13. The side and height adjustable crane 11 is - as also shown in Figure 3 - provided with a telescopic boom 14 and a connected thereto, formed by a hydraulic cylinder-piston arrangement Längsverstellantrieb 15 and a boom head 16 and is common with the crane cab 13th pivotable on a platform 17 with its crane pivot drive 18. With 19 a formed by a hydraulic cylinder-piston assembly lifting drive and 20 is designated a cable drum. On the boom head 16, a cable 21 is attached, which is guided over a provided with a load hook 22 lower block 23 and provided on the boom head deflection roller 24 and can be acted upon via a connected to the cable drum 20 drive 25 for lifting.

As can be seen in FIGS. 1 and 2, on the machine frame 10 of the vehicle 1 on both sides of the cable crane 11 in the machine longitudinal direction, foundation tubes 26; 27; Stored 28, wherein each four about 2.5m long foundation pipes 26 at the bottom of the machine frame in the region of the rail bogies 2 and all other foundation pipes 26; 27 and 28 are mounted deeper in a trough-like recess of the machine frame to allow for the telescopic boom 15 of the crane, in particular when transferring a lichtraumprofilfreie end position. The vehicle 1 is designed to receive or transport a total of forty-one foundation pipes, namely eight foundation pipes 26, eight twenty 3.4 m long foundation pipes 27 and five 3.6 m long foundation pipes 28. These are at the bottom of the machine frame 10 and Bottom 29 of the recess arranged by means of these attached guide sleeves 30 telescopically up and pushed.

The vehicle 1 illustrated in FIGS. 1 to 3 with the side and height-adjustable cable crane 11 arranged thereon of a relatively low structural group and the foundation pipes 26 or 27 and 28 arranged on both sides thereof are provided with a device 31 for driving these foundation pipes into the ballast bed 32 and the underlying earth layers 33 equipped. The device 31 consists of a hydraulic vibration device 34, which can be seen in particular from FIG. 3, which is designed as a hydraulic hammer and for clamping or transporting the foundation pipe to be collected. Between the height adjustable via the cable drum 20 load hook 22 of the rope crane 11 and the hydraulic vibrating device 34, a hydraulically acted vibration damper 35 is arranged, which is directly suspended on the one hand on the hook 22 and connected at its lower end to the hydraulic vibration device 34 via a cable holder 36 is.

The illustrated in Fig. 3 and in Fig. 4 as a circuit diagram, between load hook 22 and the appropriate hydraulically continuously variable vibratory drive having vibration device 34 arranged vibration damper 35 is formed by a hydraulically loadable cylinder-piston assembly 37. Both chambers 38 and 39 of the hydraulic cylinder 40 on both sides of the piston 41 are connected via lines each with independent, filled with pressure oil or gas diaphragm accumulators 42 and 43. The hydraulic vibration device 34 and the vibration damper 35 is in this case acted upon by the arranged on the vehicle Hydraulikversorgungsein direction 9. Each cylinder chamber 38 and 39 is further connected to a shut-off valve 44 and 45 for the pressure oil feed, expediently in conjunction with a venting element, and each diaphragm accumulator 42 and 43 is preceded by a pressure gauge 46 for controlling the gas bias. The oil pressure in the vibration device 34 adjacent chamber 39 of the hydraulic cylinder 40 is in this case compared to the oil pressure in the load hook 22 adjacent chamber 38 and the gas pressure in the vibrating device 34 adjacent diaphragm accumulator 42 also greater than the gas pressure in the load hook 22 adjacent diaphragm accumulator 43. The hydraulically loadable vibration damper 35 is suspended with the hydraulic cylinder 40 via a bracket 47 on the load hook 22, and the end of the piston rod of the piston 41 is also formed with a holder 48 for receiving the hydraulic vibration device 34 via the cable holder 36.

As can be seen in Figure 3 and also in FIGS. 1 and 2, on the machine frame 10 of the vehicle 1, on both machine frame longitudinal sides in each case via a hydraulic cylinder-piston assembly 49 acted upon and each have an axis 50 substantially parallel to the track level pivoting centering or guide arm 51 and 52 arranged, these arms 51 and 52 are, as shown in particular in Fig. 2 in a dashed position, provided with spring-action guide rollers 53, the first-centering in particular for locating the excavated foundation pipe 26; 27 and 28 serve, so that the detected by a hydraulically beaufschalgbaren preferably clamping device 54 of the hydraulic vibrating device 34 foundation tube 26 or 27 or 28 together with these guide rollers 53 for the Einrammvorgang erfaß- or is centered.

Suitably, the drives 15 and 19 of the rope crane 11 for lateral and vertical adjustment, and the crane pivot drive 18 and the hydraulic vibration device 34 and the hydraulic vibration damper 35 and the hydraulic drives for the clamping device 54 and the hydraulic cylinder-piston assemblies 49 of seitenverschwenkbaren boom 51 and 52 connected to the provided on the vehicle 1 common hydraulic supply device 9.

As can be seen further in FIGS. 1 and 2, the vehicle 1 which can be moved in the direction of the arrow 55 on the track 5, with its cable crane, has a total of 41 fuse tubes 26; 27 and 28, wherein already such a foundation pipe 28 as shown on the right side of the drawing in Fig. 1 and 2, in the ballast bed 32 and the underlying earth layers 33 - see also Fig. 3 - by means of this hydraulic vibration device 34th was rammed using the interposed vibration damper 35. On this foundation pipe 28 a catenary mast 56 is already attached. In Fig. 2 of the drawing, an intermediate position of a thus detected by the pivoted-centering or guide arm 52 with the guide rollers 53 foundation tube 28 is shown in dotted lines. In Figure 3, the drawn with dotted lines gauge is designated 57.

In the following, the operation of the device according to the invention for driving in foundation pipes for pylons on railway tracks by means of a track-movable vehicle with side and height-adjustable cable crane on the hand of the illustrated Auführungsbeispieles will now be described in more detail.

Before driving these foundation pipes 26 and 27 or 28, the locations at which the foundation pipes for the catenary masts 56 are to be driven, are precisely defined and marked next to the track 5 by means of suitable surveying equipment. Thereafter, the self-propelled vehicle 1 is moved in the direction of the arrow 55 by the operator in each case directly up to this marking point, in such a way that the cable crane 11 comes to stand next to this point.

The cable crane 11 is there - as can be seen in particular from FIGS. 1, 2 and 3 - actuated by the operator, in such a way that the telescopic boom 14 with the suspended in the load hook 22 hydraulic vibration 35 up to the front the vehicle is directed on a bearing block 58 parked hydraulic vibration device 34, the latter being suspended in the position 48 of the vibration damper. The cable crane 11 is now pivoted by 180 ° backwards and a foundation tube 28 is detected with the hydraulic clamping device 54 and lifted from the corresponding guide sleeve 30 and about as far as marker stone side and höhenverschwenkt. To that

Foundation tube 28 at this point to be able to center exactly and align, this is - as shown schematically in Fig. 2 bottom \

indicated - act by the three guide rollers 53 of the hydraulic cylinder-piston assembly 49 j

Centering or guide arm 52 spent in the correct vertical position, as can be seen in particular from Figure 3. After that ;

begins the actual driving process, with the device 31, the foundation pipe 28 by applying the!

hydraulic vibration device 34 in the ballast bed 32 and the underlying earth layers 33 is driven. ι

The hydraulic vibration device 34 has continuously variable, hydraulic vibration exciter 59 for preferably j

vertically directed vibrations, which are acted upon differently depending on the nature of the substrate j

can be. During the driving process, not only the vibrations of the hydraulic vibration device 34, but j act

Also, the relatively high weight - in the present embodiment, about that of approximately 600mm thick foundation pipe 28 j

as well as the vibrator weight - wherein the rope 21 with the load hook 22 suspended vibration damper 35 and the]

with the foundation pipe 28 connected hydraulic vibration device 34 during the Einraumvorganges below

Tensile load is. j

The vibrations occurring in the driving process are transmitted via the cable holder 36 on the vibration damper 35 and absorbed by this or collected and eliminated. The vibrations coming from the hydraulic vibratory device become a biased hydraulic oil column in the cylinder via the piston rod of the piston 41

40 derived. To achieve this, the hydraulic cylinder 40 is on both sides of the piston 41 in its chambers 38 and ι

39 biased with pressure oil, wherein the oil pressure in the vibration device 34 adjacent chamber 39 in comparison to the oil pressure in the load hook 22 adjacent chamber 38 is greater. On the other hand, the gas pressure in the vibration device 34 adjacent diaphragm accumulator 42 - with its membrane 60 - also greater than the gas pressure in the load hook 22 adjacent Membrananspeicher43 - with its membrane 61. The apparent in Fig. 4 membrane memory 42 and 43 are by their respective - pure schematically indicated - membranes 60 and 61 respectively divided into two chambers, wherein the upper chamber is the gas part and the lower chamber is the pressure fluid part.

Appropriately, in this case, the oil pressure in the diaphragm accumulator 42 forty bar and the gas pressure twenty bar and in the diaphragm accumulator 43, the oil pressure twenty-eight bar and the gas pressure fourteen bar. The coming of the hydraulic vibrator 34 vibrations are thus via the piston rod of the piston 41 to the prestressed hydraulic Oil column derived in the cylinder 40. In this case, the gas pretensioning pressure is set into oscillation via the cylinder oil column, as a result of which the outer jacket of the hydraulic cylinder 40, which is connected to the load hook 22, is largely kept free of vibrations. With the described hydraulic vibration damper 35 thus the vibrations occurring from the hydraulic vibrating device 34 are continuously reduced stepwise, with the load hook 22 then substantially no more vibrations come into effect. After the complete driving of the foundation tube 28, as well as on the right side of Fig. 1 and 2 can be seen, the crane 11 is returned to the starting position, the vibrating device 34 with the vibration damper 35 expediently remains on the load hook 22 and no longer hydraulically is charged. After the right of way in the direction of the arrow 55, the vehicle 1 is moved to the next marking point on the side of the track 5, where the process described is repeated.

By means of the device 31 according to the invention, in particular the usually occurring harmful oscillatory alternating stresses on the crane arm can be almost completely eliminated, whereby the life of the cable crane 11 is substantially increased and a crane with a lower structural group is used for these purposes, which is more economical to use and Moreover, a much higher performance provides than a comparable crane higher structural group without the interposition of such a vibration damper 35. Also, the vehicle 1 can with such a smaller cable crane 11 more expedient and advantageous with such foundation pipes 26; 27 and 28 are loaded, in particular with regard to the space requirement and the pivoting range of the rope crane 11, also taking into account the

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Clearance profiles 57 for transfer and transport journeys. As can be seen in FIG. 1 in the left-hand part of the drawing, the hydraulic vibrating device 34 remains on the bearing block 58 with the cable crane 11 retracted in such transfer travel of the vehicle 1. In FIGS. 1 and 2, an already driven-in drive is also shown on the right-hand side of the drawing Foundation tube 28 can be seen with the attached to this catenary mast 56. The original storage of this already driven foundation pipe 28 is shown in the trough-shaped recess of the vehicle 1 with dashed lines. Of course, in the context of the invention, any other suitable crane or excavator can be used in conjunction with the device 31, wherein the achievable with the inventive device 31 and the vibration damper 35 elimination of the vibrations occurring on the load or holding means significant economic savings Choice of a correspondingly smaller, but still more powerful crane brings. Further, for example, when planting the guide rollers 53 to the foundation tube 26; 27 or 28 are also arranged according to the invention during the driving operation between the boom 51 and / or 52 and the holder for the guide rollers as well as a suitably much smaller vibration damper 35. With the device 31 is thus in particular a faster and better driving such foundation pipes 26; 27 and 28 achieved at significantly higher life of all components. The equipped with the device 31 vehicle 1 also allows according to the invention, a particularly rapid and easy transport and driving such foundation pipes 26; 27 and 28 on one or the other side of the track 5, which can be provided in a particularly economical way longer track distances quickly, safely and accurately with such foundation pipes for catenary masts.

Claims (9)

1. Device for driving foundation or holding elements, such as profiles od. Like., In soil layers, especially foundation pipes for poles on railway tracks, by means of one, on a side and height adjustable load boom, such as a cable crane, arranged vibration device, characterized characterized in that between LasMHalterungsmittel, in particular the load hook (22) of the crane (11) and the vibration device (34) for acting on the element to be driven, a hydraulically loadable vibration damper (35) is arranged. 2. Device according to claim .1, characterized in that the Schwindungsdämpfer (35) directly on the, preferably on a cable drum (20) or winch height adjustable hooks (22) is suspended and with its lower end, preferably also via a cable holder ( 36), is connected to the preferably hydraulically acted vibration device (34). 3. Device according to claim 1 or 2, characterized in that die.hydraulische vibrating device (34) as a hydraulic hammer and for clampable detecting or transporting the einzutreibenden element, in particular of the foundation tube (26) or (27 or 28) is formed. 4. Device according to claims 1 to 3, characterized in that the hydraulic vibration damper (35) is formed by a hydraulically loadable cylinder-piston Anordnüng, wherein the two chambers (38; 39) of the hydraulic cylinder (40) on both sides of Piston (41) via lines each with independent, filled with pressure oil or gas diaphragm accumulators (42, 43) are connected. 5. A device according to claim 4, characterized in that the oil pressure in the vibration device (34) adjacent chamber (39) of the hydraulic cylinder (40) compared to the oil pressure in the load hook (22) adjacent chamber (38) larger and the gas pressure in the diaphragm device (42) adjacent to the vibration device (34) is also greater than the gas pressure in the diaphragm accumulator (43) adjacent to the load hook (22). 6. Device according to claim 4, characterized in that each hydraulic cylinder chamber (38, 39) with a shut-off valve (44, 45) for the pressure oil supply, preferably with a venting element, connected and each diaphragm accumulator (42, 43) for Regulation of the gas bias a manometer (46) is connected upstream. 7. Device according to claims 4 to 6, characterized in that the vibration damper (35) with the hydraulic cylinder (40) is suspended on the load hook and the end of the piston rod for receiving the hydraulic vibration device (34) is formed. 8. Device according to claims 1 to 7, provided with a rail undercarriage and the side and height adjustable crane associated vehicle and connected to the crane via a winch hydraulic vibration device, characterized in that the with the hydraulic vibration device (34) over the hydraulically actuated vibration damper (35) connected side and height adjustable crane (11) is arranged centrally on the vehicle (1), which on both sides of the crane pivoting range for substantially vertical storage of foundation pipes (26; 27; 28) for poles (56) Driving on the left or right of a railway track (5) is formed, wherein on both longitudinal sides of the machine frame (10) of the vehicle via a respective hydraulic cylinder-piston arrangement (49) acted upon and about an axis (50) pivotable substantially parallel to the track plane centering or guide arm (51, 52) are arranged. 9. Device according to claim 8, characterized in that the hydraulic vibration damper (35) is connected to the same, provided on the vehicle hydraulic supply device (9) as all other hydraulic drives, in particular the drives (15; 18; 19) to the side and Height adjustment of the crane (11), the hydraulic vibration device (34) and the seitenverschwenkbaren boom (51, 52). For this 2 pages drawings