FR2837850A1 - PENDULUM APPARATUS FOR PUSHING INTO THE UNLOCK OF ANCHORS OF GROUND SEALINGS, BY PERCUSSION OF A HYDRAULICALLY CONTROLLED MASS ON A DOCKING PIN - Google Patents

Abstract

Pendulum device intended for the plunging of anchors of ground seals by percussion of a mass with hydraulic control on a driving spindle. The function of the device is to plunge directly into the ground by percussion, of anchor anchors with integrated or added sheath and, of all types of posts, supports, stakes of any material, without any limit of offset. The device is autonomous, transportable, adaptable to any lifting machine. It allows the operation on difficult or steep access grounds ensuring by its design an optimal verticality. This device comprises a carrying element (2) provided with a universal hook supporting a fixed pendulum column (1) in which a mobile column slides freely (7). This movable column supports the driving spindle and guides a sliding striking mass (10) driven by a jack (20) and a hydraulic clamp (12) ensuring a constant striking elevation of approximately 1 m. Hydraulic power is supplied by an external group. Its field of use includes public works and replaces its versatility with other sinking machines.

Description

cylindrical (210, 220) is turned towards the track (V).

DESCRIION

  The present invention relates to an apparatus intended to plunge directly into most floors, anchors for sealing with integrated or attached sheath, and

  all types of supports such as posts, supports and stakes.

  The various existing and / or adaptable mechanized sinking devices, proposed by the industry and traditionally used in public works and more particularly road works, only provide non-versatile "trade" solutions. The main drawbacks of these devices are: - The "jackhammers", tools designed for destruction, have a too high rate of strike and not powerful enough, their manual holding does not ensure the balance of driving and, from a certain spindle height holding the perforator by

  the operator makes them out of reach.

  l 5 - Hydraulic "rock breakers" provide 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 truck crane lifting arms.

  - 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, non-sloping ground, the possible offset of the driving 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 posts and stakes in agriculture, their possibility of

offset is small (1.4 m).

  - 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 carried out 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 power unit.

  It 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 set can be hung on all types of

  lifting arms, articulated or not, of any length, type crane truck, crane, tractor-

  shovel, etc. which makes it possible to deport the device. I1 is composed on the other hand, of a mobile tubular column which slides in the fixed tubular column in its lower part, which gives a telescopic device with concentric axes. In

  this column, a round tube fixed at the top supports at its base the driving spindle.

  A mass of a hundred kilos slides in the mobile column along this same axis. This is raised by a hydraulic cylinder to a fixed height and then released, thereby releasing the impact on the sinking tool previously positioned at the point of installation, sufficient energy to successfully drive all types of anchors and all types of posts, supports, stakes of any type

  what material, in most soils.

  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 the raising and lowering maneuvers, either loaded or empty. The operation of the assembly is carried out in four stages: i - The first stage consisting in the gripping 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 lacing the gripping bar (13) by opening the clamp (12) and releasing the clamping of the fixed (1) and mobile (7) columns by deactivation automatic jack (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.

  - The fourth step consisting of the return of the jack (20) to the low position for

  recovery of the gripping bar (13).

  An auxiliary time exists for raising the spindle (8) and the movable column (7); it is carried out after the installation of the pin (23) securing the movable column (7) and the mass (10), then by taking with the hydraulic clamp (12) the gripping bar (13) of the mass ( 10), at the same time as the jack connecting the columns (22) is made inactive. The fall protection and blocking of all movements is ensured by the installation of the pin (24) joining the two columns and the mass. As an alternative to the pin (24), a retractable lever, not shown in the figures, inserts a locking finger in three aligned holes made at

  bottom of columns (1) and (7) and in the mass (10).

  The hydraulic power supply source is provided by an independent group, guaranteeing a striking rate of 8 to 10 strokes / minute. What

  allows rapid penetration, without causing destruction of the surrounding soil.

  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 set hung on the

  lifting device along its natural axis of gravity.

  In the case where one wishes a precise verticality of the post or the destination support, one will choose 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 gravel or sand between the scabbard and the support. The

  verticality will be adjusted by adjusting the inclination of the support.

  The accompanying drawings illustrate the invention: FIG. 1 represents a perspective view of an apparatus according to the invention,

  attached to the end of the crane, with the independent hydraulic unit.

  Figures 2 and 3 show the longitudinal and transverse sections of the assembly

of the device.

  With reference to these drawings, 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 attached 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 planes. The 1S positioning of the added plates (2) is made fixed which guarantees 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. Certain portions are fitted with removable sheet metal casings to ensure adjustments and general maintenance (access to the lifting cylinders, limit switches, earth clamps, vertical guides, fixed and mobile column blocking cylinders, hoses and hydraulic connections , any electrical servo equipment, etc.) The other faces are fitted with two support cradles (5a) and (5b) to facilitate horizontal removal to 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) by 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) freely receives the tip of the driving spindle (8), about fifteen centimeters. The mass (10) slides freely in the column (7) and along the tube (11). By this design, the sliding mass (10) is always guided inside the movable column (7). The large 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 movable column (7) is centered freely on the striking washer of the driving spindle (8) which ensures excellent centering. She accompanies him with 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 slope slopes and ditches.

  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. Columns (1) and (7) are fitted with an anti-skid safety device (26) which limits the course of

  sliding down 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). In FIG. 3, the jack (15) is mounted in a machined stirrup (16), self-guided by bronze plates (17), located 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 end piece of cylinder and carries downwardly offset the clamp and bracket assembly (12). 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 tip

  upper in 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 at 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 its positioning on the ground by the crane as well as at the end of driving to raise the assembly.

  mobile (spindle, mass, mobile column) 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, also guaranteeing safety. It will be placed after the lifting of the mobile assembly, and will be removed with the pin (23) before driving. As an alternative to the pin (24), a retractable lever can block the two columns by inserting a finger

  blocking in three aligned lights made at the bottom of the columns and on the ground.

  This lever in the locking position controls by electrical contact the stopping of all

  action on hydraulic cylinders.

  The various functions provided by the hydraulic cylinders are controlled by a remote electrical box ensuring the "manual" and "automatic" functions

movements.

  Descriptive precision (fig 8), a U-shaped support (2a), covers the upper end of

  column (1). The column (1) and the support (2a) are fixed by bolts.

  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

  o the spaces provided for the oblong holes.

  Descriptive precision in the case of operation with a positive action clamp: the jack (15) is specially adapted for mechanical locking by

spring and guide slides.

  Descriptive precision (fig 3) of the blocking cylinder (22) of the columns: this short stroke cylinder located on the fixed column (1) will be secured by its stop action through

  of a light, the mobile column (7).

  Descriptive precision of the supports (5a) and 5b) (figure 1) in the form of a cradle: the

  support (5b) comprises a translation roller.

  Descriptive precision on the mechanism (26) (fig 3) blocking the travel of the mobile column (7) in the safety position. I1 consists of a cylindrical tube applied to the fixed column (1) comprising a spring which by its pressure pushes an axis provided with a bearing at its end through a light on the fixed column (1) which

  will fit into an eye of the mobile column (7).

  Descriptive precision of the columns (fixed and mobile) to allow the passage of the gripping mechanism: the fixed (1) and mobile (7) columns (fig 2) have a

  longitudinal opening to allow the passage of the gripping mechanism (12).

Claims (13)

  1. The apparatus is intended for the insertion plumb into the ground by percussion, of anchoring anchors with integrated sheath and anchoring anchors with attached sheath and, of all types of posts, supports, stakes.   any material, without any offset limit.   This device (fig 2 and 3) is characterized by a support element (2) suitable for the plumb; supporting a fixed pendulum column (1), in which a movable guide column (7) slides freely, comprising a round spindle tube 0 (11) and a mass (10) sliding freely in the column (7) and along the tube round (11); the movements of the mass (10) equipped with the gripping bar (13) are ensured by a hydraulic clamp (12) secured to a jack (20). The pins (23) and (24) maintain the various moving elements during handling. A jack (22) immobilizes the columns during the ascent of the mass.   Hydraulic power is provided by an external group.   2. Apparatus according to claim 1,   characterized by a universal hooking device (fig 8).   3. Apparatus according to claim 2, characterized by a set of hooking plates adjustable by sliding (fig 8), intended to guarantee the verticality in the space of the device according to the invention. A U-shaped support (2a) covers the upper end of the column (1). The column (1) and the support (2a) are fixed by bolts. 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. Once the axis of gravity of the whole   confused with the vertical axis, the positioning of the binding is locked for life.   4. Apparatus according to claim 1, characterized by a fixed monobloc column (1) in the form of a tube with a quadrilateral section serving as a guide for an internal movable column (7) and supporting the mass recovery devices, hydraulic controls, blocking, of   support for handling and anti-dismantling of columns (1) and (7).   o 5. Apparatus according to claims 1 and 4,   characterized by a device (fig 2, 3 and 9) comprising a hydraulic cylinder (20) displacing gripping equipment (12) for lifting a mass (10). The movement of the gripping equipment (12) is guided by C profile slides (18) and ball bearings (19). These same slide guides   is (18) are used to align the end of the rod of the hydraulic cylinder (20).   A flat iron support (21) is hung vertically on this jack end piece and carries, offset downward, the clamp and bracket assembly (12). The cylinder stroke (20) ensures a   rectilinear movement over a height of about 1 m.   6. Apparatus according to claims 1 and 5,   characterized by a hydraulic clamp (12), (fig 2, 3 and 9) produced by a hydraulic cylinder (15) (disc brake shoe or a single or double acting hydraulic cylinder, positive or not). The hydraulic cylinder (15) is mounted in a machined caliper (16), self-guided by bronze plates (17), located around the gripping bar (13) 2s of the striking mass (10). In the case of operation with a positive action clamp, the jack (15) is specially adapted for mechanical locking by spring.   and guide slides to ensure operator safety.   7. Apparatus according to claims 1 and 4,   characterized by a jack (22) (fig 3) located on the fixed column (1) and of short stroke, the stop effect of which through a light will secure the mobile column (7) to the fixed column (1).   8. Apparatus according to claims 1 and 4,   characterized by two supports (5a) and (5b) (fig 1), positioned on the fixed column (1) in the form of a cradle, the (5b) of which comprises a translation roller, and a handle   positioning (6) fixed on the column (1).   9. Apparatus according to claims 1 and 4,   o characterized by a mechanism (26) (fig 3) blocking in the safety position the stroke of the mobile column (7).   10. Apparatus according to claims 1 and 4,   Characterized by a longitudinal opening in the fixed (1) and mobile (7) columns   i5 in which the gripping mechanism slides.   11. Apparatus according to claim 1, characterized by a movable column (7) in one-piece tube fitting into the fixed column (1) with the minimum of play, sliding down freely and comprising a fixed tube (11) of section round fixed and centered in its upper part, traversing its   longest axis and now the driving spindle at its lower end.   12. Apparatus according to claims 1 and 11,   characterized by a circular opening at the bottom of the mobile column, (fig 4), leaving passage with a minimum of play to the striking washer of the driving spindle (8). 13. Apparatus according to claim 1, characterized by a mass (10) of about a hundred kilos, (fig 2, 3 and 9), sliding freely in the movable column (7), and around its tube (11) comprising a calibrated gripping bar (13), fixed vertically on the surface, and off-center on one side thereof and rising towards the haul. Opposite this bar (13) and at the top of the mass (10), two bearings (14) ensure frictionless sliding in the movable column (7). A light at the base of the   mass (10) allows the passage of the pin (23).