WO2003083225A1 - Hydraulic pendular striker - Google Patents
Hydraulic pendular striker Download PDFInfo
- Publication number
- WO2003083225A1 WO2003083225A1 PCT/FR2003/000962 FR0300962W WO03083225A1 WO 2003083225 A1 WO2003083225 A1 WO 2003083225A1 FR 0300962 W FR0300962 W FR 0300962W WO 03083225 A1 WO03083225 A1 WO 03083225A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- column
- fixed
- mass
- hydraulic
- jack
- Prior art date
Links
Classifications
-
- 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
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/08—Drop drivers with free-falling hammer
Definitions
- the present invention relates to an apparatus intended to drive in the ground.
- the present invention relates to an apparatus intended to drive in the ground. plumb in most soils, anchors with integrated or attached sheaths, and all types of supports such as posts, supports and stakes.
- the hydraulic “rock breakers” ensure a large offset relative to the axis of the backhoe and can operate in places that are difficult to access. Designed for destruction, they are too violent in frequency and strike force. There is a risk of breakage of the driving spindle due to the current steering of the joints by hydraulic cylinders which do not ensure correct verticality (arc of a circle of the lifting arm) as well as a risk of partial or total deterioration of the surrounding soils. The use of these machines is only possible with backhoe cranes and absolutely not with lifting arms of truck site crane.
- the "threshing bells” were developed for specific trades such as the installation of stakes for fixing road safety rails. These devices are generally self-supporting and designed for linear work (roadsides and motorways) on open and non-sloping ground, the possible offset of the sinking is limited to a maximum of 1.4 m.
- the hydraulic "pile drivers” are self-supporting or carried on a tractor, they are intended for the installation of poles and stakes in agriculture, their possibility of offset is low (1.4 m).
- the hydraulic “vibratory hammers” are used for sinking sheet piles and are oversized for our applications.
- the device according to the invention overcomes all the drawbacks indicated above.
- the insertion is achieved by the percussion of a sliding mass on a driving spindle.
- the verticality of driving is ensured by the pendulum design of the device.
- the device is autonomous, transportable, and compact on the ground. It allows operation on difficult or steep access grounds.
- the operational installation of the device can be ensured by any lifting means with a maximum offset relative to the axis of a crane.
- the driving force is provided by a remote hydraulic unit.
- This assembly consists of a fixed tubular column, suspended in its upper part, in the axis of gravity.
- the plumb adjustment is achieved by a set of plates adjustable by sliding.
- This assembly can be attached to all types of lifting arms, articulated or not, of any length, such as a crane truck, crane, backhoe loader, etc., which makes it possible to offset the device.
- On the other hand it consists of a mobile tubular column which slides in the fixed tubular column in its lower part, which gives a telescopic device with driving axes. concentric. In this column, a round tube fixed at the top supports the spindle at its base. A mass of a hundred kilos slides in the mobile column along this same axis.
- a hydraulic clamp block ensures on a gripping bar secured to the mass, the latter.
- the hydraulic clamp block is moved by the hydraulic cylinder pressed against the fixed column and allows up and down maneuvers, either loaded or empty. The operation of the assembly takes place in four stages:
- the first step consisting in taking with the hydraulic clamp (12) of the gripping bar (13) of the mass (10) at the same time as the jack (22) secures the fixed column and the mobile column;
- the second step consisting in raising the mass (10) with the jack (20), over a stroke of approximately 1 m;
- the third step consisting of the simultaneous action of releasing the gripping bar (13) by opening the clamp (12) and releasing the clamping of the fixed (1) and mobile (7) columns by deactivation automatic actuator (22), so as to allow the mass (10) to fall freely under the effect of its own weight on the impact washer of the driving spindle; and allow the descent of the column (7) automatically.
- a retractable lever inserts a locking finger in three aligned slots made at the bottom of the columns (1) and (7) and in the mass (10).
- the hydraulic power supply source is ensured by an independent group, guaranteeing a strike rate of 8 to 10 blows / minutes, which allows a fast sinking, without causing destruction of the surrounding soils.
- the verticality of the sealing is adjusted by the alignment of the axes of the fixed column (1) and of the mass guide (7), whether or not equipped with the spindle.
- the assembly attached to the lifting device along its natural axis of gravity.
- a sealing dowel whose sheath will have been increased by 10 mm on each interior side, so as to create a clearance allowing a wedging by stuffing of gravel or sand between the scabbard and the support.
- the verticality will be adjusted by correcting the inclination of the support.
- FIG. 1 represents a perspective view of an apparatus according to the invention, hung at the end of the crane, with the independent hydraulic group.
- Figures 2 and 3 show the longitudinal and transverse sections of the entire device.
- the fixed column consists of an outer tube (1), in one piece, of square section and very thick, hung in space at a fixed position (that of the insertion). It is equipped with the hanging system (2) with adjustable insert plates and centered in its upper end. This device maintains the conventional lifting ring (3) adaptable to the hooks of all cranes. By its nature, the whole is freely articulated in all plans.
- the positioning of the added plates (2) is made fixed which guarantees the verticality of the assembly (the presetting is carried out in the factory).
- One of the faces is fitted with a longitudinal cover (4) which protects the hydraulic and mechanical equipment.
- the other faces are equipped with two support cradles (5a) and (5b) to facilitate horizontal laying on the ground during handling and transport operations on the truck and two longitudinal handles (6) to facilitate positioning.
- the mobile column (7) of square section slides freely in the fixed column (1) through its lower part, with minimum clearance.
- This column (7) is equipped with a round tube (11) fixed and centered in the upper part.
- the lower end of the round tube (11) receives freely the end of the driving spindle (8), about fifteen centimeters.
- the mass (10) slides freely in the column (7) and along the tube (11).
- the sliding mass (10) is always guided inside the movable column (7).
- the significant length of the fixed (1) and mobile (7) columns as well as the alignment with the striking axis ensures good common centering of the axes of gravity.
- the lower part of the mobile column (7) is freely centered on the striking washer of the driving spindle (8) which ensures excellent centering. She accompanies him on each impact.
- the upper edges of the pegs (9) can be buried at depths of up to 25 cm. This ensures the installation of seals on slopes of embankments and ditches.
- this guide (7) By covering the dangerous space at the base of the system, this guide (7) also ensures the protection of operators in the area of falling mass.
- the columns (1) and (7) are provided with an anti-dislodging safety device (26) which limits the sliding stroke downwards of the mobile column (7).
- the gripping of the mass (10) by a hydraulic clamp (12) is possible in any position along a calibrated gripping bar (13). This bar is fixed vertically to the wall on one side of the mass and rises so that it is always accessible by the hydraulic clamp.
- a complementary set of two bearings (14,) mounted on the mass, realigns during its elevation the offset generated by the eccentricity of the socket.
- the hydraulic clamp (12) is produced by a hydraulic cylinder (15) (disc brake shoe or single or double acting hydraulic cylinder, positive or not).
- the jack (15) is mounted in a machined stirrup (16), self-guided by bronze plates (17), situated around the grip bar (13) of the sliding mass (10).
- the movement of the gripping equipment (12) is guided by slides in C profiles (18) and ball bearings (19). This ensures constant positioning during all vertical strokes.
- These same slide guides (18) are used for aligning the end piece of the rod of the hydraulic cylinder (20) for lifting the mass.
- a flat iron support (21) is hung vertically on this jack end piece and carries the clamp and stirrup assembly (12) downwardly offset.
- the stroke of the hydraulic cylinder (20) ensures a rectilinear movement over a height of about lm.
- the jacking spindle (8) is aligned along the general axis of gravity by the introduction of its upper end piece into the base of the central round tube (11).
- a hydraulic cylinder (22), of a type similar to that of the clamp (12) ensures the locking of the fixed column (1) with the mobile column (7) during the ascent of the mass. Its operation is simultaneous with the earth clamp (12). This has the effect of stiffening the assembly and creating a point of support on the ground by the spindle in order to limit a variation in load on the hook of the crane during the lifting of the mass.
- the pin (23) holds the pin at the base of the round tube (11) and secures the movable column (7) and the mass (10). The presence of this pin is necessary during the assembly operations of the spindle until it is positioned on the ground by the crane as well as at the end of driving to raise the mobile assembly (spindle, mass, column mobile) by the mass lifting command.
- the pin (24) has the function of securing the assembly (mass, mobile and fixed columns) during handling and transport operations while also ensuring safety. It will be placed after the lifting of the mobile assembly, and will be removed with the pin (23) before driving.
- a retractable lever can ensure the blocking of the two columns by inserting a blocking finger in three aligned holes made at the bottom of the columns and on the mass. This lever in the locking position controls by an electrical contact the stopping of all action on the hydraulic cylinders.
- the various functions provided by the hydraulic cylinders are controlled by a remote electrical box ensuring the "manual" and “automatic” functions of the movements.
- the positioning is adjustable laterally in the horizontal plane by oblong holes, located along the axis of the assembly.
- An upper plate (2b) is placed on the support (2a) and fixed by bolts, in oblong holes and located in the axis perpendicular to the first assembly.
- This plate (2b) holds the lifting system of the carrier (3). Due to the design of this attachment, the assembly is freely articulated in all planes, along the general axis of gravity. The verticality adjustment is refined by the perpendicular displacement of the plates (2a) and (2b) in the spaces provided for the oblong holes.
- the jack (15) is specially adapted for mechanical locking by spring and guide slides.
- the support (5b) comprises a translation roller.
- the fixed (1) and mobile (7) columns (fig 2) have a longitudinal opening to allow the passage of the gripping mechanism (12).
Landscapes
- Engineering & Computer Science (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)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003239656A AU2003239656A1 (en) | 2002-03-28 | 2003-03-27 | Hydraulic pendular striker |
EP03732628A EP1504159A1 (en) | 2002-03-28 | 2003-03-27 | Hydraulic pendular striker |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR02/03868 | 2002-03-28 | ||
FR0203868A FR2837850B1 (en) | 2002-03-28 | 2002-03-28 | PENDULUM APPARATUS FOR PUSHING INTO THE UNLOCK OF ANCHORS OF SEALING IN THE GROUND, BY PERCUSSION OF A HYDRAULICALLY CONTROLLED MASS ON A DOCKING PIN |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003083225A1 true WO2003083225A1 (en) | 2003-10-09 |
Family
ID=27839255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2003/000962 WO2003083225A1 (en) | 2002-03-28 | 2003-03-27 | Hydraulic pendular striker |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1504159A1 (en) |
AU (1) | AU2003239656A1 (en) |
FR (1) | FR2837850B1 (en) |
WO (1) | WO2003083225A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113322749B (en) * | 2021-07-12 | 2022-08-09 | 吉林建筑大学 | Ramming machine for building construction |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4193459A (en) * | 1978-03-07 | 1980-03-18 | Engstrom William J | Post-hole driver |
JPS5681720A (en) * | 1979-12-09 | 1981-07-04 | Koji Mitsuo | Drop hammer |
JPS5931312A (en) * | 1982-08-13 | 1984-02-20 | Masaya Nagashima | Pile driver |
-
2002
- 2002-03-28 FR FR0203868A patent/FR2837850B1/en not_active Expired - Fee Related
-
2003
- 2003-03-27 EP EP03732628A patent/EP1504159A1/en not_active Withdrawn
- 2003-03-27 AU AU2003239656A patent/AU2003239656A1/en not_active Abandoned
- 2003-03-27 WO PCT/FR2003/000962 patent/WO2003083225A1/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4193459A (en) * | 1978-03-07 | 1980-03-18 | Engstrom William J | Post-hole driver |
JPS5681720A (en) * | 1979-12-09 | 1981-07-04 | Koji Mitsuo | Drop hammer |
JPS5931312A (en) * | 1982-08-13 | 1984-02-20 | Masaya Nagashima | Pile driver |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 005, no. 151 (M - 089) 24 September 1981 (1981-09-24) * |
PATENT ABSTRACTS OF JAPAN vol. 008, no. 128 (M - 302) 14 June 1984 (1984-06-14) * |
Also Published As
Publication number | Publication date |
---|---|
FR2837850B1 (en) | 2004-05-28 |
AU2003239656A1 (en) | 2003-10-13 |
EP1504159A1 (en) | 2005-02-09 |
FR2837850A1 (en) | 2003-10-03 |
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