EP2393990A1 - Dispositif vibreur a motorisation hydraulique pour machine de vibrocompactage - Google Patents
Dispositif vibreur a motorisation hydraulique pour machine de vibrocompactageInfo
- Publication number
- EP2393990A1 EP2393990A1 EP10706021A EP10706021A EP2393990A1 EP 2393990 A1 EP2393990 A1 EP 2393990A1 EP 10706021 A EP10706021 A EP 10706021A EP 10706021 A EP10706021 A EP 10706021A EP 2393990 A1 EP2393990 A1 EP 2393990A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydraulic motor
- tubular body
- vibrator device
- rotor
- hydraulic
- 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
Links
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 4
- 230000035515 penetration Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 4
- 238000005056 compaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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
Definitions
- the present invention relates to the field of soil treatment by vibro-compaction.
- the vibrocompacting technique consists in penetrating vertically into the ground a penetration unit composed of a vibrator device connected to a carrier by a plurality of tubes of substantially the same diameter as the vibrating device.
- the vibrator device When the penetration unit penetrates the ground, the vibrator device generates radial vibrations that diffuse into the ground with the effect of improving its mechanical properties.
- this technique is used to compact a volume of soil consisting for example of grains, such as sand.
- the invention more specifically relates to a vibrator device for a vibro-compaction machine comprising:
- a tubular body extending longitudinally while having a lower end; at least one first hydraulic motor arranged in the tubular body and comprising a rotor and a casing forming a stator;
- An eccentric member disposed in the tubular body between the lower end and the first hydraulic motor, said eccentric member being adapted to be rotated by the rotor of the first hydraulic motor to produce vibrations.
- the hydraulic motor that equips such a vibrator device comes from a range that is usually found in the trade.
- the motor used in the prior art consists of a rotor and a stator which form an assembly distinct from the other elements of the vibrator device and in particular of the tubular body.
- the motor assembly is disposed in the tubular body to connect the eccentric member to the rotor.
- the rotor is the portion of the motor that is rotatably mounted in the motor housing.
- Such vibrators are described in particular in documents US 2002/003989 and DE 102 32 314 in which the motor assembly constitutes a unit distinct from the rest of the vibrator device and in particular the tubular body.
- a disadvantage of this assembly is that it requires the use of hydraulic motors of small displacement and thus having a low power.
- a constraint vibrators devices is that they must easily sink into the ground. To do this, we try to minimize the diameter of the tubular body. The penetration into the soil is indeed facilitated by a thin tubular body.
- An object of the invention is to provide a vibrator device with hydraulic motorization remedying the aforementioned drawbacks.
- the invention achieves its object by the fact that the housing of the first hydraulic motor is constituted by the tubular body.
- the first hydraulic motor further comprises at least one bearing disposed between the rotor and an inner surface of the tubular body.
- This bearing for example constituted by a bearing, provides guidance in rotation of the rotor relative to the inner surface of the tubular body.
- the bearing is locked axially with respect to the tubular body through a shoulder formed on the inner surface of the tubular body.
- the bearing bears directly on the inner surface of the tubular body.
- the volume available for the rotor is maximum since there is no room between the bearing and the tubular body.
- the vibrator device further comprises a sleeve disposed between the bearing and the inner surface of the tubular body.
- the sleeve comprises a sealing member for sealing between the rotor and the eccentric member.
- the sleeve also extends axially towards the eccentric member so as to define a housing for a connection piece between the rotor shaft and the eccentric member.
- the tubular body consists of a first part in which is housed the eccentric member and a second part, distinct from the first part, in which is housed at least a part of the rotor of the first hydraulic motor, the first part being integrally fixed to the second part by means of the sleeve.
- the first hydraulic motor further comprises a yoke mounted at a longitudinal end of the rotor, said yoke having a diameter substantially equal to the inside diameter of the tubular body.
- the cylinder head is the part of the hydraulic motor for feeding the rotor with hydraulic energy.
- the cylinder head according to the invention makes it possible to achieve a seal between the chamber defined radially between the rotor and the inner face of the tubular body on the one hand, and the upper part of the tubular body on the other hand.
- This conformation is particularly advantageous when the vibrator device according to the invention is devoid of sleeve.
- the peripheral edge of the yoke bears axially against a shoulder formed in the inner face of the tubular body.
- the vibrator device further comprises a second hydraulic motor disposed in the tubular body while being intended to be coupled to the first hydraulic motor.
- the second hydraulic motor can be coupled, or not, to the first hydraulic motor, whereby one can advantageously modify the vibratory frequency generated by the vibrator device.
- the assembly thus formed has a larger displacement and can deliver greater power than if the first hydraulic motor was the only one to operate. It follows that for the same hydraulic flow, the eccentric member rotates less quickly and generates vibrations at a lower frequency.
- the vibrator device further comprises a distributor for supplying at least one of the two hydraulic motors. Thanks to the distributor, it is therefore possible to quickly activate or deactivate the second hydraulic motor in order to change quickly the frequency of the vibrations.
- the vibrator device according to the invention is therefore advantageously reactive.
- the displacement of the first hydraulic motor is greater than the displacement of the second hydraulic motor.
- the invention is further directed to a vibro-compaction machine comprising:
- FIG. 1 illustrates a vibrocompactage machine according to the invention, the vibrator device is pressed into the ground;
- FIG. 2 is an axial sectional view of the vibrator device according to a first embodiment of the invention
- FIG. 3 is a detailed view of the vibrator device of FIG.
- FIG. 4 is a detailed view of the vibrator device according to a second embodiment of the invention.
- FIG. 5 is a detailed view of the vibrator device according to a variant of the second embodiment of the invention.
- FIG. 6 is a detailed view of the vibrator device according to a third embodiment of the invention.
- FIG. 1 shows an example of a vibrocompacting machine 10 according to the invention which is used in this configuration to perform a vibrocompacting operation.
- This machine 10 comprises a frame 12 mounted on tracks 14 to ensure its displacement, and a bracket 16 extending in height from the frame 12.
- the machine 10 further comprises a vibrator device 18 mounted at the lower end of a plurality of tubes 20 oriented vertically while being carried by the end 16a of the bracket 16.
- the vibrating device 18 has the shape of a long and thin cylinder whose length is large relative to its diameter, the lower end of the vibrator device having a head to facilitate penetration into the ground. Due to its particular shape, the vibrator device 18 is able to sink into soft ground, such as sand, generally only under the effect of the force of gravity. However, it is nevertheless possible, if necessary, to apply a complementary vertical force (commonly called "pull down").
- the upper end 20a of all the tubes 20 is fixed to a cable 22 which is guided by a set of pulleys 24 arranged at the end 16a of the bracket 16.
- the movement of the cable 22 is ensured in our example by a motorized reel 26, mounted on the frame 12. It will be understood that the cable 22 makes it possible to raise the vibrating device and also to guide its descent.
- the machine 10 further comprises means 28 for supplying the hydraulic motorization of the vibrator device 18 with hydraulic energy.
- these means 28 comprise a reel 30 of hydraulic hoses 32, and a source of hydraulic energy (not shown).
- the hydraulic hoses 32 are fed via a pulley 34 located at the end 16a of the bracket to the vibrator device 18 extending inside the tubes 20.
- the device vibrator 18 enters the soil S, it generates V vibrations that diffuse into the ground.
- FIG. 1 is diagrammatic, the vibrator device 18 actually being able to reach a depth of the order of several tens of meters.
- the vibrator device 100 comprises a tubular body 102 extending longitudinally along the axis A of the vibrating device 100.
- This tubular body 102 has a lower end 102a and an upper end 102b.
- the tubular body 102 has a domed head 104 to facilitate the penetration of the vibrator device 100 in the ground, while the upper end 102b has a coupling member 106 for attachment to the lower end of the set of tubes 20 above.
- the tubular body 102 has an inner surface 102c which is cylindrical here.
- the vibrator device 100 further comprises an eccentric member 108 intended to be rotated about the axis A by a hydraulic motor 110.
- the eccentric member 108 known elsewhere, is here in the form of of a cylinder of which a section is hollowed out. This eccentric member 108 is held and guided at both ends by two bearings 112,114.
- the hydraulic motor 110 is in turn conventionally powered by at least two hydraulic lines 116,118 which extend axially while constituting the extension of the hydraulic hoses 32. Three hydraulic lines are necessary if the drainage function is provided by a separate pipe.
- This hydraulic motor 110 in this case a motor of axial piston type 120, comprises a rotor 122 which is integrally fixed to an axial transmission shaft 124, the latter being in turn coupled to the eccentric member 108.
- the rotor 122 has the shape of a cylinder in which the axial pistons 120 can move axially.
- the axial pistons 120 move axially while bearing against an inclined cam 126, which causes their rotation, as well as that of the rotor 122, about the axis A.
- the stator 128 of the hydraulic motor 110 is advantageously constituted by the tubular body 102, which allows, for a given tubular body, to have a rotor having a larger displacement than when using a complete commercial hydraulic motor, thanks to which one has more power.
- the rotor 122 is guided in rotation by two bearings 130, 132 disposed between the rotor 122 and the inner surface 102c of the tubular body 102. It should be noted that one could quite use only the bearing 130 for example. More specifically, it is found in this embodiment that the bearings 130,132 bear directly on the inner surface 102c.
- the hydraulic motor 110 further comprises a yoke 142 which is mounted at a longitudinal end of the rotor 122, in this case its upper end 144.
- the yoke 142 has a diameter substantially equal to the inside diameter of the tubular body 102, whereby the yoke 142, possibly by means of a seal 146, makes it possible to seal between the chamber containing the bearings 130, 132 and the upper end of the inside of the tubular body 102.
- This second embodiment of the vibrator device 200 differs from the first embodiment in that it further comprises a sleeve 202 of generally cylindrical shape extending, in this example, axially between the bearings 114 of the eccentric member 108 and the breech 142.
- This sleeve 202 surrounds the rotor 122 being arranged radially between the bearings 130, 132 and the inner surface 102c of the tubular body 102.
- a vibrating device 300 is shown in a variant of the aforementioned second embodiment.
- the tubular body 302 consists of a first portion 302a and a second portion 302b, these two portions being distinct and preferably having substantially the same diameter.
- the eccentric member 108 is housed in the first portion 302a, while the second portion 302b houses the hydraulic motor 110 and the hydraulic lines 116, 118.
- the first portion 302a is attached to the second portion 302b through a sleeve 304 similar to the aforementioned sleeve 202.
- the sleeve 304 comprises first attachment means 306 disposed at a lower end 304a of the sleeve 304 for attachment to the first portion 302a, and second attachment means 308 disposed on the outer surface 304b of the sleeve 304 for its fixing at the lower end of the second portion 302b of the tubular body 302.
- the sleeve 304 further comprises a cylindrical portion 310 intended to be introduced into the second portion 302b of the tubular body
- this cylindrical portion 310 corresponds substantially to the inside diameter of the second portion 302b of the tubular body 302.
- the thickness of the wall 312 of the cylindrical portion 310 is chosen to be fine enough to maximize the volume available for the rotor 122.
- the yoke 142 radially bears against the wall of the cylindrical portion 310
- the inclined cam 314, on which the ends of the axial pistons 120 bear advantageously forms a single piece with the sleeve 304.
- the vibrator device 400 comprises a first hydraulic motor 402 similar to the hydraulic motor 110 of the first embodiment, whose rotor 122 is coupled to a transmission shaft 404, the latter being connected to the eccentric member 108 .
- the vibrator device 400 further comprises a second hydraulic motor 406, distinct from the first hydraulic motor 402, which is coupled to the transmission shaft 404.
- the output shaft 408 of the second hydraulic motor 406 also extends along the axis A and cooperates with the upper end 404a of the transmission shaft 404.
- the second hydraulic motor 406 is thus able to be coupled with the first hydraulic motor 402 in order to provide additional power to the transmission shaft 404. This results in a hydraulic flow equal to a reduction in the frequency of the vibrations generated by the eccentric member 108.
- the vibrator device 400 For the supply of the two hydraulic motors, the vibrator device 400 comprises a distributor 410 connected on the one hand to the hydraulic lines 116, 118, and to each of the two engines on the other hand.
- the dispenser 410 is controllable so that the operator can choose to activate or not the second hydraulic motor 406.
- the cubic capacity of the second hydraulic motor is preferably smaller than that of the first hydraulic motor 402, thanks to which, in particular, the supply lines 412,414 coming out of the distributor and intended to supply the first hydraulic motor extend axially. around the second hydraulic motor.
- the second hydraulic motor 406 can for example be actuated on demand in order to change the frequency of the vibrations generated.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0950621A FR2941714B1 (fr) | 2009-01-30 | 2009-01-30 | Dispositif vibreur a motorisation hydraulique pour machine de vibrocompactage. |
| PCT/FR2010/050055 WO2010086537A1 (fr) | 2009-01-30 | 2010-01-14 | Dispositif vibreur a motorisation hydraulique pour machine de vibrocompactage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2393990A1 true EP2393990A1 (fr) | 2011-12-14 |
| EP2393990B1 EP2393990B1 (fr) | 2016-01-13 |
Family
ID=40722734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10706021.2A Not-in-force EP2393990B1 (fr) | 2009-01-30 | 2010-01-14 | Dispositif vibreur a motorisation hydraulique pour machine de vibrocompactage |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8382397B2 (fr) |
| EP (1) | EP2393990B1 (fr) |
| CA (1) | CA2750932C (fr) |
| FR (1) | FR2941714B1 (fr) |
| SG (1) | SG173166A1 (fr) |
| WO (1) | WO2010086537A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014019138A1 (de) * | 2014-12-23 | 2016-06-23 | Rsm Grundbau Gmbh + Willi Meyer Bauunternehmen Gmbh In Gbr | Schwingungsdämpfer für ein Kupplungsgelenk eines Tiefenrüttlers |
| EP3517687B1 (fr) * | 2018-01-26 | 2020-08-05 | Keller Holding GmbH | Procédé de détection et de commande de compactage lors du compactage d'un sol au moyen d'un vibreur en profondeur |
| CN112726560B (zh) * | 2020-12-31 | 2024-08-30 | 北京振冲工程机械有限公司 | 一种具有中通下出料的振冲设备 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2340959A (en) * | 1940-08-03 | 1944-02-08 | Philip E Harth | Recovery of pipe |
| US2717763A (en) * | 1951-04-03 | 1955-09-13 | Jr Albert G Bodine | Earth boring apparatus with acoustic decoupler for drilling mud |
| US3309877A (en) * | 1960-09-07 | 1967-03-21 | Degen Wilhelm | Vibrator for compacting soil |
| JPS52130124A (en) * | 1976-04-23 | 1977-11-01 | Sakura Denki Kk | Concrete oscillator |
| US4397588A (en) * | 1981-01-23 | 1983-08-09 | Vibroflotation Foundation Company | Method of constructing a compacted granular or stone column in soil masses and apparatus therefor |
| US6554543B2 (en) * | 2000-05-24 | 2003-04-29 | William E. Hodge | Method and apparatus for improving the structure of saturated masses of granular materials |
| DE10232314A1 (de) * | 2002-07-17 | 2004-02-05 | Bauer Spezialtiefbau Gmbh | Vorrichtung und Verfahren zum Verdichten von Böden und zur Herstellung von säulenförmigen Körpern im Boden mit Hilfe von Tiefenrüttlern |
| DE202007012140U1 (de) * | 2007-08-27 | 2007-11-29 | Möller, Heiner, Dipl.-Ing. | Schlagwellenverdichter |
-
2009
- 2009-01-30 FR FR0950621A patent/FR2941714B1/fr not_active Expired - Fee Related
-
2010
- 2010-01-14 SG SG2011054343A patent/SG173166A1/en unknown
- 2010-01-14 EP EP10706021.2A patent/EP2393990B1/fr not_active Not-in-force
- 2010-01-14 US US13/146,832 patent/US8382397B2/en not_active Expired - Fee Related
- 2010-01-14 WO PCT/FR2010/050055 patent/WO2010086537A1/fr not_active Ceased
- 2010-01-14 CA CA2750932A patent/CA2750932C/fr not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010086537A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20110318103A1 (en) | 2011-12-29 |
| HK1159711A1 (zh) | 2012-08-03 |
| SG173166A1 (en) | 2011-08-29 |
| FR2941714A1 (fr) | 2010-08-06 |
| CA2750932A1 (fr) | 2010-08-05 |
| EP2393990B1 (fr) | 2016-01-13 |
| WO2010086537A1 (fr) | 2010-08-05 |
| FR2941714B1 (fr) | 2015-01-02 |
| CA2750932C (fr) | 2016-07-12 |
| US8382397B2 (en) | 2013-02-26 |
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