EP3911801A1 - Arrangement vibrateur pour l'amélioration du sol de fondation - Google Patents

Arrangement vibrateur pour l'amélioration du sol de fondation

Info

Publication number
EP3911801A1
EP3911801A1 EP19701600.9A EP19701600A EP3911801A1 EP 3911801 A1 EP3911801 A1 EP 3911801A1 EP 19701600 A EP19701600 A EP 19701600A EP 3911801 A1 EP3911801 A1 EP 3911801A1
Authority
EP
European Patent Office
Prior art keywords
lock
feed container
drive
force
bulk material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19701600.9A
Other languages
German (de)
English (en)
Other versions
EP3911801C0 (fr
EP3911801B1 (fr
Inventor
Kuno Klein
Victor MAURIER
Uwe Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Keller Holding GmbH
Original Assignee
Keller Holding GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Keller Holding GmbH filed Critical Keller Holding GmbH
Priority to PL19701600.9T priority Critical patent/PL3911801T3/pl
Publication of EP3911801A1 publication Critical patent/EP3911801A1/fr
Application granted granted Critical
Publication of EP3911801C0 publication Critical patent/EP3911801C0/fr
Publication of EP3911801B1 publication Critical patent/EP3911801B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
    • E02D3/054—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil involving penetration of the soil, e.g. vibroflotation
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/66—Mould-pipes or other moulds
    • E02D5/665—Mould-pipes or other moulds for making piles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/18—Placing by vibrating

Definitions

  • the invention relates to a vibrator arrangement for soil improvement, comprising a sluice with a silo tube and with a sluice drive for moving the sluice, the sluice being designed to receive a bulk material and to guide it into the silo tube, a feed container for feeding the bulk material to the sluice, wherein a feed container drive is provided to move the feed container between a waiting position and a landing position on the lock.
  • the invention further relates to a method for taking over bulk material from a feed container into a lock with a silo tube in a vibrator device, the lock being moved by a lock drive, the feed container being filled with the bulk material and the feed container being driven by a feed container drive is moved between a waiting position and a landing position on the lock.
  • Vibrator arrangements are used in soil improvement processes that differ in terms of their mode of operation and load transfer.
  • With the vibrating pressure process for example, coarse-grained soils are compacted in themselves, while with the vibrating stuffing process, load-bearing columns are made of gravel or crushed stone in mixed and fine-grained, non-compactable soils. Furthermore, pile-like foundation elements can be produced, over which relatively high loads can be borne if a permanent, load-bearing connection with stuffing columns is not guaranteed.
  • EP 2 241 677 A1 discloses a device for supplying inert materials to vibrating soil compaction systems on a compaction device, which has a tower or arm for carrying a drill battery. The drilling battery is fed inert material from a lock.
  • the funnel-shaped feed device is moved between a first lower height near the ground and a second height at which the lock is located.
  • the feed device is provided with an opening flap to transfer the inert material from the feed device to the lock.
  • the outlet flap is opened by mechanical means on the device and the lock.
  • the vibrating tamping process is carried out in alternating steps.
  • the gravel or crushed stone emerging during the vibrating stroke is compacted when pressed and pushed sideways into the ground.
  • the coarse-grained feed material exits at the tip of the vibrator with compressed air.
  • the system is pressurized with compressed air that supports the transport of the bulk material within the system.
  • a disadvantage of the prior art system is that the feeder can only be docked to the lock when the lock is not in an up or down movement. Should there be a collision between the lock and the feed device, this can lead to a rope break, which causes the feed device to fall.
  • the entire system must be vented before the lock can be opened. This leads to considerable downtimes. The process cannot be continued until the bulk material has been transferred to the lock and the working air pressure has been reached again after the lock has been closed.
  • An object of the invention is to propose a vibrator arrangement and a method for soil improvement which make it possible to reduce the downtime.
  • a vibrator arrangement according to the invention for soil improvement has a lock with a silo tube and with a lock drive for moving the lock, the lock being designed to accommodate a bulk material and to guide it into the silo tube.
  • a feed container is also provided for to feed the bulk material to the lock, a feed container drive being provided in order to move the feed container between a waiting position and a placement position at a stop formed on the lock.
  • the lock and the feed container are each guided, for example, on a leader or via a rope on a boom.
  • the lock drive is independent of the feed container drive.
  • Appropriate guides and drives of the lock and the feed container are known to the person skilled in the art, as are vibrators for generating a vibration of the vibrator arrangement, which is preferably designed with such a vibrator as a deep vibrator or as a top vibrator.
  • a control of the feed container drive is designed to reduce a force of the feed container drive in the direction of the stop from a first value to a second value in the application position, the second value having a smaller amount than a force of the lock drive.
  • An advantage of the vibrator arrangement according to the invention is that the first value of the force of the feed container drive is suitable for moving the feed container from the waiting position into the application position at the stop formed on the lock, while the force of the feed container drive reduced to the second value drives the feed container couples with the lock by holding the feed container by the force of the feed container drive reduced to the second position in the application position on the stop.
  • This coupling of the feed container to the lock succeeds particularly advantageously independently of a movement of the lock, since the force of the feed container drive reduced to the second value has a smaller amount than a force of the lock drive.
  • the force of the lock drive is to be understood as a driving force of the lock drive which acts on the lock. Other forces acting on the lock do not count towards the lock drive.
  • the force of the feed container drive is understood to mean a drive force of the feed container drive which acts on the feed container. Other forces acting on the feed container do not count towards the force of the feed container drive.
  • the lock with the silo tube during the vibrator stroke is lifted against the direction of gravity from a borehole and retracted into the borehole when pressed in the direction of gravity.
  • the vibrator arrangement according to the invention advantageously allows the coupling described above both during the vibrator stroke and during the retraction of the lock. This shortens the downtime of the vibrator assembly because the lock does not have to be stopped for the coupling process.
  • control of the feed container drive is further designed to maintain the force of the feed container drive acting after reaching the application position in the direction of the stop during a takeover of bulk material from the feed container into the lock.
  • the take-over of the bulk material is thus advantageously carried out during the vibrating stroke or during the retraction of the vibrator arrangement.
  • the force of the lock drive moves the lock upwards, counter to the direction of gravity.
  • the force of the feed container drive which is reduced to the second value, is likewise directed upwards and is sufficient in the case to move the feed container upwards, with at least the speed of the lock, so that the lock and the feed container remain coupled.
  • the movement of the feed container is preferably braked by the lock, so that part of the force of the feed container drive acts on the lock via the stop.
  • the force of the lock drive moves the lock downwards, in the direction of gravity.
  • the force of the feed container drive reduced to the second value is still directed upward, counter to the force of the lock drive. Since the amount is less than the force of the lock drive, the feed container is pressed down by the lock.
  • the transfer process can also take place during a transition from lifting the lock to retracting the lock or vice versa.
  • the force direction of the force of the lock drive is reversed, the force of the feed container drive reduced to the second value after reversing the force direction of the force of the lock drive again being less than the force of the lock drive.
  • the person skilled in the art recognizes that in the transition phase the force of the feed container drive reduced to the second value will temporarily be greater in amount than the force of the lock drive, as a result of which the coupling of the feed container to the lock is not released.
  • the control of the feed container drive is preferably also designed to move the feed container out of the application position after the bulk material has been taken over.
  • the coupling is thus advantageously released again and the feed container returns to the waiting position by means of the feed container drive until bulk material is to be transferred into the lock again.
  • the waiting position in the sense of the invention is a position of the feed container which is arranged at a distance from the lock.
  • the waiting position is arranged so that the lock does not reach this position during regular operation, so that the movement of the lock is not hindered by the feed container located in the waiting position.
  • the waiting position is not necessarily an unchangeable position.
  • the waiting position is preferably changeable.
  • the waiting position is defined at a fixed distance from the lock, so that the waiting position also moves when the lock is moved.
  • the waiting position is preferably the position in which the feed container is filled with the bulk material.
  • the application position in the sense of the invention is defined by the stop on the lock and thus moves with the lock.
  • At least two different sensors for determining a position of the feed container relative to the lock are connected to the control.
  • a sensor is provided to detect an approach of the feed container to the application position, for example in order to reduce a driving speed of the feed container.
  • Another sensor is designed to detect the reaching of the landing position and to send a signal to the controller accordingly.
  • the feed container drive has a hydraulic motor, a bypass being provided parallel to the hydraulic motor, the bypass having a bypass valve in order to open and close the by pass.
  • the force of the feed container drive is advantageously reduced from the first value to the second value when the bypass is open.
  • the bypass has, for example, an adjustable pressure relief valve.
  • the lock has a lockable outlet, the outlet being opened in order to guide the bulk material from the lock into the silo tube.
  • the lock also preferably has a closable inlet, the inlet being opened for taking over the bulk material from the feed container.
  • the embodiment is particularly advantageous since the silo tube is preferably pressurized. The two closable openings of the lock, the inlet and the outlet, allow the bulk material to be transferred from the feed container into the lock without the vented silo pipe having to be vented. It is also preferred to apply compressed air to the lock independently of the silo tube.
  • the airlock for taking over the bulk material is vented while the silo pipe separated by the closed outlet remains pressurized, it is advantageously possible to pressurize the airlock after completion of the takeover with the inlet and outlet closed in order to equalize the pressure between the sluice and the silo tube before opening the outlet.
  • the empty silo pipe is preferably pressurized with compressed air when the outlet is closed.
  • the lock preferably remains depressurized, particularly preferably with an open inlet. If bulk material is then fed in, time is advantageously saved since the feed container can transfer the bulk material to the lock with the inlet already open without delay. It also saves filling the airlock with compressed air and venting. This is made possible by the outlet that separates the lock from the silo tube.
  • the airlock and the silo tube Before the vibrator assembly is completely extended from the ground, it is advantageous to vent the airlock and the silo tube via two valves without opening the inlet or the outlet of the airlock. In particular, this prevents the compressed air from being blown out in the last section before the vibrator arrangement is moved out of the ground, which would mean a risk of injury from stones flying around. Furthermore, the lock and the silo tube can be opened and filled more quickly.
  • the invention further relates to a method for taking over bulk material from a feed container into a lock with a silo tube in a vibrator arrangement, the vibrator arrangement preferably corresponding to the vibrator arrangement according to the invention described above. All features of the vibrator arrangement can be applied to the process and vice versa.
  • the lock is moved by a lock drive
  • the feed container is filled with the bulk material
  • the feed container is moved by a feed container drive between a waiting position and a contact position at a stop formed on the lock.
  • a force of the feed container drive in the direction of the stop is reduced from a first value to a second value, the second value having a smaller amount than a drive force of the lock drive.
  • An advantage of the method is that the first value of the force of the feed container drive is suitable for moving the feed container from the waiting position into the application position at the stop formed on the lock, while the force of the feed container drive reduced to the second value moves the feed container with the Lock couples by holding the feed container against the stop in the application position by the force of the feed container drive reduced to the second value.
  • This coupling of the feed container to the lock is particularly advantageously carried out independently of a movement of the lock, since the force of the feed container drive reduced to the second value is less than a force of the lock drive.
  • the feed container is preferably held in the application position by the force reduced to the second value when the lock is moved.
  • the feed container is held in the loading position when the lock is moved in a first direction towards the waiting position by moving the feed container together with the lock in the first direction, a driving force of the lock drive acting on the feed container via the stop and the feed container drive force reduced to the second value is overcome.
  • the feed container is held in the application position when the lock is moved in a second direction opposite to the first direction, in that the feed container follows the stop in the second direction due to the force of the feed container drive reduced to the second value. It is preferably provided that at least part of the bulk material is taken from the feed container into the lock, while the feed container is held in the on position.
  • a closable outlet between the pressure-ventilated silo tube and the lock is closed after the application position has been reached, the lock then being vented separately via a valve before a lockable inlet of the lock is opened.
  • the inlet is preferably first closed and then the outlet is opened.
  • the lock is pressurized with compressed air independently of the silo tube, while the inlet and the outlet are closed, in order to balance the pressure between the lock and the silo tube before the outlet is opened.
  • the feed container is preferably moved into the waiting position.
  • the feed container preferably remains in the waiting position until the lock is to be filled again with bulk material.
  • the feed container is particularly preferably filled with the bulk material in the waiting position.
  • Figure 1 shows an embodiment of a vibrator arrangement according to the invention with a feed container in a lay-on position on a lock in a schematic sectional view;
  • Figure 2 shows the embodiment of Figure 1 with an open inlet of the lock in a schematic sectional view
  • FIG. 3 shows the embodiment according to FIG. 1 after taking over bulk material in a schematic sectional illustration
  • Figure 4 shows the embodiment of Figure 1 with the feed container in a waiting position in a schematic sectional view
  • Figure 5 shows the embodiment of Figure 1 with an open outlet of the lock in a schematic sectional view
  • Figure 6 shows a detail of the embodiment of Figure 1 in a schematic sectional view without the lock
  • FIG 7 shows a control of the feed container drive of the embodiment according to FIG 1 in a schematic representation.
  • FIGs 1 to 5 an embodiment of a vibrator arrangement according to the invention with a feed container 1 and a lock 2 is shown in a schematic sectional view in different positions or in different steps. Based on the illustrations, it is explained how a take-over of bulk material 3 from the feed container 1 into the lock 2 takes place in the vibrator arrangement according to the invention, or by the method according to the invention.
  • the lock 2 has a lock drive 4, with which the lock 2 is moved.
  • 1 of the lock drive 4 shows a guide slide 41 of the lock 2, which is guided in a known manner on a leader, not shown.
  • the lock drive 4 transmits a driving force to the guide carriage 41 of the lock 2, which is connected to the guide carriage 41 via a suspension 42.
  • the feed container is moved by a feed container drive 5 between a waiting position, as shown in FIGS. 4 and 5, and a lay-on position, as shown in FIGS. 1 to 3.
  • the feed container 1 is located on a stop 6 formed on the lock 2.
  • the stop 6 is formed on the guide slide 41 of the lock 2.
  • a force of the feed container drive 5 in the direction of the stop 6 is reduced from a first value to a second value, the second value being less than a driving force of the lock drive 4.
  • a controller 8 of the feed container drive 5 explained in more detail at a later time. From the feed container drive 5, a guide slide 51 of the feed container 1 is shown in FIG. 1, which is also guided in a known manner on the leader (not shown). The feed container drive 5 transmits a driving force to the guide slide 51 of the feed container 1, which is connected to the guide slide 51 via a suspension 52.
  • the guide carriage 41 is also designated as a lock drive 4 and the guide carriage 52 is also referred to as a feed container drive 5, since the respective driving forces are transmitted to the corresponding guide carriages 41, 51.
  • the lock 2 has a closable outlet 10 and an also closable inlet 11, wherein in FIG. 1 both the outlet 10 and the inlet 11 are closed.
  • the outlet 10 is formed as a conical closure at a lower end of the lock 2, to which an upper end of the silo tube 7 is flanged, so that the outlet 10 can open and close an opening between the lock 2 and the silo tube 7.
  • a seat for the conical closure 10 is formed at the opening, which is usually provided with a rubber seal device to ensure a largely gas-tight closure, even if small amounts of the bulk material remain between the closure 10 and the device.
  • An actuating linkage 12 is connected to the outlet 10, which is preferably actuated hydraulically.
  • the silo tube 7 is preferably pressurized to support an exit of coarse-grained bulk material at a lower end of the silo tube 7, not shown, by means of compressed air.
  • the closable outlet 10 advantageously makes it possible to open the inlet 11 of the lock in the closed position without venting the silo tube 7.
  • the inlet 11 is explained in more detail below with reference to FIG.
  • the inlet 1 1 is designed as a pivotable flap in an upper region of a wall of the lock 2, which is oriented in the application position according to FIG. 1 with respect to an outlet opening 14 of the feed container 1 such that the transfer of the bulk material 3 from the feed container 1 in the lock 2 is made possible.
  • the inlet 11 is pivotable by means of a pivot mechanism 15 for opening and closing, preferably by hydraulic actuation.
  • FIG. 2 the inlet 11 is shown open, the outlet opening 14 of the feed container 1 being still closed. Since the outlet 10 of the lock 2 is closed, the silo tube 7 remains pressurized, while the lock 2 is ready to receive the bulk material 3.
  • the lock 2 according to the invention forms an additional storage container with a double opening mechanism, consisting of the inlet 11 and the outlet 10.
  • the lock 2 forms a pressure container which on the one hand can hold the bulk material 3 and on the other hand can be separately ventilated.
  • FIG. 3 shows the vibrator arrangement according to the invention chronologically according to the in Figure 2 shown situation.
  • the feed container 1 is still in the contact position on the stop 6 formed on the lock 2, due to the force of the feed container drive 5, which works against the stop 6.
  • the outlet opening 14 of the feed container 1 is now open, the bulk material 3 was transferred via a pouring chute 16 from the feed container 1 through the opened outlet opening 14 and the opened inlet 1 1 to the lock 2.
  • the outlet 10 of the lock 1 is still closed, so that the pressure ventilation of the silo tube 7 is maintained.
  • FIG. 4 shows the vibrator arrangement according to the invention chronologically according to the situation shown in FIG. 3. After the bulk material 3 has been transferred from the feed container 1 to the lock 2, the feed container 1 has left the application position at the stop 6.
  • the feed container drive 5 has moved the feed container 1 into a waiting position.
  • the waiting position is characterized in that the feed container 1 is arranged at a distance from the lock 2, here along the leader not shown at a distance below the lock 2.
  • the lock 2 can be moved independently of the feed container 1 as long as which is placed in the waiting position.
  • the feed container 1 can for example be refilled with bulk material in the waiting position.
  • Inlet 2 1 is closed again at lock 2.
  • the outlet 10 is provided to guide the bulk material 3 out of the lock 2 into the silo tube 7. However, outlet 10 is still closed.
  • the lock 2 can now preferably be pressurized separately before the outlet 10 is opened in order to match the pressure conditions of the lock 2 to the silo tube 7 again.
  • FIG. 5 shows the vibrator arrangement according to the invention chronologically according to the situation shown in FIG. 4.
  • the outlet 10 was opened so that the bulk material 3 has entered the silo tube 7 from the lock 2.
  • the feed container 1 is unchanged in its waiting position.
  • the outlet 10 is then closed again in order to enable a separate ventilation of the lock 2 for a subsequent takeover of bulk material.
  • the feed container 1, which is filled again or further with bulk material 3, moves back into the application position according to FIG. 1 if necessary.
  • FIG. 6 A detail of the feed container 1 is explained with reference to FIG.
  • a sensor 9 is seen as a proximity sensor 9 in order to detect an approach of the guide carriage 51 of the feed container 1 to the guide carriage 41, or the stop 6 of the lock 2.
  • the force relationships of the driving forces are shown in FIG. 6, which act between the guide carriage 51 of the feed container 1 and the guide carriage 41 of the lock 2 and are transmitted via the stop 6.
  • the force of the feed container drive 5 in the direction of the stop 6 is reduced from the first force value F1 to the second force value F2, which is why the first force value F1 is represented by an interrupted arrow and the second force value F2 by an arrow with full Line.
  • the force F1 of the feed container drive 5 acts on the guide slide 51 of the feed container 1 and is transmitted via the stop to the guide slide 41 of the lock 2.
  • the force FS of the lock drive 4 acts on the guide slide 41 of the lock 2 and is directed against the force F1 of the feed container drive 5.
  • the vibrator arrangement is moved into the ground, since the force FS of the lock drive 4 has a larger amount than the reduced force F1 of the feed container drive 5.
  • the resulting force FR is accordingly represented by an arrow on the stop 6.
  • the control 8 of the feed container drive 5 set up for this purpose is explained in more detail below with reference to FIG.
  • the vibrator arrangement according to the invention makes it possible to hold the feed container 1 in the application position on the lock 2 while the lock 2 is moving.
  • the realization of this synchronism between the supply container 1 and the lock 2, which allows the transfer of the bulk material 3 previously described with reference to FIGS. 1 to 5, while the vibrator arrangement Continues to work, advantageously avoids downtimes.
  • the synchronism between the supply container 1 and lock 2 is required here, as the bulk chute 16 enters the lock 2 through the open inlet 11 during the bulk transfer (see FIG. 3), so that the bulk material 3 can be transferred safely.
  • the controller 8 of the feed container drive 5 enables the synchronous movement between the feed container 1 and the lock 2 with the working speed of the vibrator arrangement during a pulling and compaction process, that is to say an upward and downward movement of the vibrator arrangement, to maintain it.
  • the feed container drive 5 and the lock drive 4 each have, for example, a separate hydraulic winch, only the hydraulic winch 53 of the feed container drive 5 being shown in FIG. 7.
  • the guide slide 51 of the feed container 1 is first moved from the waiting position according to FIG. 5 in the direction of the stop 6 on the guide slide 41 of the lock 2. This is preferably done first in a rapid movement until the proximity sensor 9 (see FIG. 6) signals the controller 8 to move the guide carriage 51 against the stop 6 in a creeping motion.
  • the method according to the invention subsequently provides that in the application position a force of the feed container drive 5 in the direction of the stop 6 is reduced from a first value to a second value, the second value having a smaller amount than a driving force of the lock drive 4 What is implemented in the exemplary embodiment by the controller 8 according to FIG. 7.
  • the Füh approximately slide 51 of the feed container 1 remains actively driven upwards during the entire transfer procedure described above according to Figures 1 to 3 via a proportional valve 17.
  • the proportional valve 17 is accordingly in a switching position for a movement of the feed container 1 upwards, in the direction of the impact 6, shown. Oil is fed to a hydraulic motor 55 of the feed container drive 5 via the actively controlled proportional valve 17 through a hydraulic line 21.
  • a flow direction of the oil in the illustrated Switch position of the proportional valve 17 is shown by directional arrows of the hydraulic lines 21, 22. Switching the proportional valve 17 would cause the feed container 1 to move downward, that is to say, for example, from the lay-on position into the waiting position, which is not shown here.
  • a double arrow P represents the opposite directions of movement upwards and downwards.
  • the hydraulic motor 55 of the feed container drive 5 is connected via a shaft to a winch 53 through which a cable 54 connected to the guide slide 51 of the feed container 1 moves the feed container 1 upwards or downwards.
  • a bypass 23 is provided in parallel with the hydraulic motor 55, the bypass having a bypass valve 19 in order to open and close the bypass 23.
  • An adjustable pressure limiting valve 20 is furthermore arranged in the bypass 23, so that when the bypass 23 is open, the force of the feed container drive 5 is reduced from the first value to the second value defined by the pressure limiting valve 20.
  • the guide slide 41 of the lock 2 determines the movement of the guide slide 51 of the feed container 1, while the latter continues to press upward against the stop 6 on the guide slide 41 of the lock 2.
  • Reaching the application position is detected by a further sensor 18, here a pressure sensor 18, whereby the bypass valve 19 opens the bypass 23.
  • the bypass valve is designed as a 2/2-way valve 19 in the exemplary embodiment.
  • Via the pressure limiting valve 20, which is set to a fixed pressure value a contact pressure for generating the force of the feed container drive 5 reduced to the second value is maintained.
  • the force reduced to the second value is generated under the contact pressure by the hydraulic motor 55 and transmitted via the winch 53 to the traction cable 54 connected to the guide carriage 51.
  • a torque arrow labeled M represents a torque of the feeder 5 drive feeder.
  • the feed container 1 of the lock 2 follows as a result of that defined by the pressure relief valve 20 Contact pressure corresponding to the working speed of the lock 2.
  • the hydraulic motor 55 of the feed container drive 5 continues to be supplied with oil via the actively controlled proportional valve 17 through the hydraulic line 21.
  • a direction of flow of the oil during the upward movement of the lock 2 corresponds to the previously described direction of flow and is additionally represented by a first arrow P1.
  • the pressure on the hydraulic motor 55 is reduced to the contact pressure in order to generate the force of the feeder drive 5 which is reduced to the second value.
  • the contact pressure is set by means of the pressure limiting valve 20 in particular at least so high that the force of the feed container drive 5 generated by the hydraulic motor 55, reduced to the second value, compensates for a weight of the masses of the feed container 1 and the bulk material 3, and moreover that required driving force generated so that the feed container 1 of the lock 2 follows without delay.
  • the direction of weight is shown by an arrow labeled G.
  • the proportional valve 17 is switched over (not shown), as a result of which the direction of force of the feed container drive 5 is reversed and the feed container 1 leaves the application position.
  • the pressure sensor 18 is relieved and closes the bypass valve 19 of the bypass 23.
  • the feed container 1 moves from the lay-on position to the waiting position until the next loading operation, which is initiated by switching the proportional valve 17 again into the position shown in FIG.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Agronomy & Crop Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

L'invention concerne un arrangement vibrateur pour l'amélioration du sol de fondation, comprenant un sas pourvu d'un tube de silo et d'un mécanisme d'entraînement de sas destiné à déplacer le sas, le sas étant configuré pour recevoir un matériau en vrac et pour l'acheminer dans le tube de silo, un conteneur d'alimentation destiné à acheminer le matériau en vrac au sas, un mécanisme d'entraînement de conteneur d'alimentation étant présent pour déplacer le conteneur d'alimentation entre une position d'attente et une position d'application contre le sas. L'invention concerne également un procédé pour transférer un matériau en vrac d'un conteneur d'alimentation dans un sas avec un tube de silo au niveau d'un dispositif vibrateur. Le sas est déplacé par un mécanisme d'entraînement de sas, le conteneur d'alimentation est rempli avec le matériau en vrac et le conteneur d'alimentation est déplacé par un mécanisme d'entraînement de conteneur d'alimentation entre une position d'attente et une position d'application contre le sas.
EP19701600.9A 2019-01-18 2019-01-18 Vibro-flottation pour compactage d'un sol Active EP3911801B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL19701600.9T PL3911801T3 (pl) 2019-01-18 2019-01-18 Układ wibratora do ulepszania gruntu budowlanego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2019/051295 WO2020147975A1 (fr) 2019-01-18 2019-01-18 Arrangement vibrateur pour l'amélioration du sol de fondation

Publications (3)

Publication Number Publication Date
EP3911801A1 true EP3911801A1 (fr) 2021-11-24
EP3911801C0 EP3911801C0 (fr) 2023-09-13
EP3911801B1 EP3911801B1 (fr) 2023-09-13

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EP19701600.9A Active EP3911801B1 (fr) 2019-01-18 2019-01-18 Vibro-flottation pour compactage d'un sol

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Country Link
US (1) US20210340717A1 (fr)
EP (1) EP3911801B1 (fr)
ES (1) ES2960874T3 (fr)
PL (1) PL3911801T3 (fr)
SG (1) SG11202107716WA (fr)
WO (1) WO2020147975A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2261375A1 (en) * 1974-02-18 1975-09-12 Keller Gmbh Johann Earth drilling method for piling etc. - uses vibrating head in compressed air shield leading casing to maintain seal
US4158518A (en) * 1977-09-13 1979-06-19 Fredric Rusche In situ pile forming method
US4269544A (en) * 1978-06-14 1981-05-26 Fredric Rusche In situ pile forming apparatus
US4384809A (en) * 1980-07-22 1983-05-24 Fredric Rusche Mandrel closure and process for in situ pile formation
DE19707687C1 (de) * 1997-02-26 1998-10-15 Wilhelm Dr Degen Vorrichtung zum Herstellen von Materialsäulen im Boden
CN2871646Y (zh) * 2005-12-29 2007-02-21 北京振冲工程股份有限公司 具有底部出料设备的振冲装置
IT1393586B1 (it) 2009-04-10 2012-04-27 Soilmec Spa Dispositivo per l'alimentazione di materiali inerti a sistemi di compattazione a vibrazione del terreno.
DE102011005267A1 (de) * 2011-03-09 2012-09-13 Alexander Degen Rüttleranordnung zum Herstellen von Füllmaterialsäulen
DE102011006735A1 (de) * 2011-04-04 2012-10-04 Alexander Degen Vorrichtung und Verfahren zur Förderung von Schüttgut

Also Published As

Publication number Publication date
PL3911801T3 (pl) 2024-02-19
US20210340717A1 (en) 2021-11-04
ES2960874T3 (es) 2024-03-07
EP3911801C0 (fr) 2023-09-13
WO2020147975A1 (fr) 2020-07-23
SG11202107716WA (en) 2021-08-30
EP3911801B1 (fr) 2023-09-13

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