FR2491116A1 - CYLINDRICAL LOCK - Google Patents

Abstract

THE LOCK, ESPECIALLY FOR VEHICLES, HAS A BODY 1 AND A BARREL 3 TURNING IN THE BODY 1. THE BARREL CONTAINS SPACERS 9, 10, 13, 15, 17, 18 WITH CONTROL SURFACES FOR KEY 24 AND WHICH ARE ARRANGED IN DIFFERENT GUIDES PLACED SIDE BY SIDE.

Description

The invention relates to a method of assembly and in particular of

  formwork shuttering consisting of floor formwork elements (formwork panels) for concrete work and the like, the formwork panels being interconnected and supported during concretework and being at least partially released from their connection

  and their support for formwork.

  There are already known methods of assembling and formwork of floor formwork which can be formed by assembling different elements of floor formwork

  ("formwork panels"). Frequently, the cof-

  frage of this kind have a flat (upper) wooden side which, on its face opposite to concrete in the service position,

  is provided, in particular at its edges, with stiffening ribs

  l5sement projecting or similar stabilizing and fixing elements. In the previously known methods,

  such formwork panels are fixed in their posi-

  service in combination with special mounts, the mounts preferably being placed on heads

  adjustable belonging to supports, or similar elements.

  There are also already known mounts provided on the supports and having cross-oriented retaining slots intended to accommodate the stiffening ribs of the formwork panels, the limits of the slots preferably deviating obliquely at least in the upper region of these slots. retaining, while the flank portions of the frame, having these retaining slots, rise upwards from a base plate or the like. The upward-facing flank parts allow the formwork panels fitted to

  their edges of corresponding stiffening ribs.

  In addition, the intersecting slots also allow

  enter, in a floor formwork, the area where you meet

  for example, be four panels, or the area where their edge stiffening ribs form a cross projecting downward. However, this known method for assembling and formwork floor formwork still has many disadvantages. For example, it is necessary to insert the formwork panels one by one into the frame from the top, which requires relatively significant work. In floor formwork of this kind, formwork is particularly difficult since movement of the panels in the opposite direction to that of formwork is no longer possible given the presence of the concrete floor. As a result, in the previously known method, for formwork, the support heads are lowered to such an extent that the formwork panels can be lifted out of the slots; space must also be provided for the corresponding lateral movement. This is why, in practice, such mounts are generally not used, but recourse is had to support heads by means of which supports or similar elements are retained to which the formwork panels can be fixed. The erection of the aforementioned floor formwork has yet another drawback: Under each point of intersection of four formwork panels, it is necessary

  house corresponding support and support. Consequently

  This, the support beams that support the mounts must, for example, be erected and aligned exactly in general, this cannot be performed well with the personnel employed in the building. In addition, in many cases, the other necessary structural conditions are not fulfilled, for example when there is a lack of floor space located exactly below the point of connection of two formwork panels. Finally, for the assembly of all the floor formwork in the above process, we

needs multiple mounts.

  The invention also relates to a floor formwork for concreting work comprising several floor formwork elements (formwork panels) and auxiliary elements for their formwork, the formwork panels having at their edges stiffening ribs or similar elements which form protrusion, at least in parts, on the flat side opposite the concrete, this floor formwork serving in particular for the implementation of the above process. The disadvantages of floor formwork

  previously known and mounts intended for different

  rents formwork panels have already been mentioned more

top about the process.

  This is why a problem which arises is to provide a method of assembling and formwork of floor formwork of the kind mentioned above which, while largely avoiding the drawbacks of previously known methods or formwork, allows mounting and in particular a simple disassembly of these forms. It is also necessary that the various formwork panels can be removed easily and safely with little labor and little expense of material and without damage to the panels or to the concrete floor; it must also be valid for

  formwork panels in which the stiffening strips

  marginally protrude slightly beyond the flat side of the panel, facing the concrete, as is often the case in

convenient.

  To solve this problem, the invention provides a process of the kind mentioned above in which, during formwork, we begin by lowering the formwork panels to be removed by a certain height, we install them by one of their longitudinal sides on a stop offset by this same height downwards and then they are tilted around this support. By lowering the formwork panel, its upper flat side is first brought to a certain distance from the concrete floor. As a result, not only can the panel relax, it also emerges from the floor to such an extent that it can be folded down without risking touching or damaging the concrete floor. This can be done without the need to lower at the same time a certain number of supports which support or help to support neighboring formwork panels (the support elements which support

  directly the formwork panel to be folded down, here considered

  anyway, must be dismantled beforehand).

  With regard to the floor formwork, the solution according to the invention lies above all in the fact that the auxiliary elements provided are formwork release devices, which have a fixing region for the

  connection to the underside of a first panel of safes

  ge still fixed first and a stop part intended to engage below a second formwork panel to be formwork, the stop part having, at least in the region of the stiffening strip, or the like, of the formwork panel, an abutment part offset downward relative to the lower sides of the formwork panel not lowered and that in the formwork panels are provided connecting points for the

formwork release devices.

  A set of large-area floor formwork

  this can be formed on the ground by assembling a large number of formwork panels, the flat sides of the panels, intended to be then turned towards the concrete, placing themselves downwards. The various formwork panels can be connected together in a simple manner, for example by threaded bolts (formwork panel bolts), and the assembled floor formwork can be set up by means of a crane. The rows of supports or the squared timber often located between the supports and the floor formwork

  can be placed in almost any location.

  They do not need to be aligned in accordance with the points of neighboring formwork panels, so that even maneuvers can perform support. During formwork removal, the various formwork panels are folded around a longitudinal side. This makes manual work easier

  and the risk of accidents is reduced.

  According to an important development of the invention, the formwork stripping devices for the floor can be detachably connected to each of the formwork panels. Preferably, the form release devices have a connecting bolt, or similar connecting elements, and the formwork panels have for these connection openings at suitable locations, preferably on internal stiffening ribs of the formwork. Correspondingly, the formwork devices do not need to be placed at each point of intersection of two or four formwork panels or on each of the formwork panels. We can be content, for the formwork, with a small number of

  economic formwork devices.

  Additional developments of the invention are explained below. The invention will now be described more precisely, with its essential details, with reference to the drawings in which, on different scales:

  Figure 1 shows in very schematic form, in elevation

  lateral and partially in section, a floor formwork within a construction; Figure 2 shows in very schematic form, and on a smaller scale, formwork panels according to Figure 1 in partial view from below Figure 3 is a side elevational view partially in section of the connection area of two panels neighboring formwork to which a formwork release device is added; Figure 4 is a partial sectional view of an internal stiffening rib of a formwork panel, carrying the formwork device, along the line IV-IV of Figure 3

  Figure 5 is a perspective side view of the device

  form of formwork, and Figure 6 is a partial side elevational view

similar to figure 3.

  A floor formwork designated by the general reference 1 is installed in a construction whose side walls 2 are already built. We sink the floor

  concrete 3 after assembling the floor formwork 1.

  After setting, the formwork of the floor formwork 1 is carried out, essentially composed of numerous floor formwork elements 4, here also briefly called "formwork panels 4". The floor formwork 1 is supported and retained by means of formwork supports 5, which

  are arranged side by side in rows in the usual way.

  The different rows of formwork supports 5 carry squared timber 5a, which in turn carry the different formwork panels 4. The floor formwork assembly 1 located between the side walls 2 has a formwork joint 6, which has the role of facilitating the removal of the various formwork panels 4, in particular at the start of formwork. During concreting, the seal is closed.

  formwork 6, for example by means of asbestos strips-

  cement, wood, or similar elements, which do not significantly interfere with the formwork. By virtue of the advantageous formwork possibility provided by the invention, explained more precisely below, the floor formwork assembly 1 provided can be assembled with a large area.

  for a given region of the floor or both

  ties la and lb separated by the formwork joint, placing the floor formwork 1 or the

  two parts 1a and 1b connected together on the supports of-

  formwork 5 or squared timber 5a (already installed at least in part). For this purpose, the various formwork panels are assembled, by their stiffening ribs 7

  located at the edges, using panel bolts

  ge 8. The assembly of the floor formwork part la and / or lb, for example, can be carried out at a

  site preparation. As a result, we avoid assembly

  block each time one by one of the formwork panels 4, or this assembly is restricted to a large extent and the assembly of a floor formwork 1 provided for a

  given floor region is significantly simplified.

  To form the floor formwork 1, we start

  this by a formwork panel 4b, which is close to the formwork joint 6. A first formwork panel 4a, connected to the formwork panel 4b and still fixed first, is connected to a formwork device according to the invention 9 , described more precisely below. This has a fixing region 9a by which it is connected to the side

  bottom of the panel still fixed 4a. In addition, the

  formwork stripping 9 has a stop part designated by the general reference 10. By this, it engages under the panel to be stripped 4b. The two panels 4a, 4b have at their edges edge stiffening ribs 7a and 7b. These are still first of all connected to one another, as already indicated, by formwork panel bolts 8 (FIG. 3). In the region of the stiffening rib 7b of the shuttering panel 4b, the abutment part 10 has a section of

2 4 91 116

  stop 12 offset downward relative to the lower sides

  laughing 11 of the lowered formwork panels 4. At the

  continuation comes laterally, towards the panel

  frer and therefore from the outer end 30 of the formwork device 9, an unwinding cam 13. On each of the formwork panels 4 are provided connecting zones designated by the general reference 14 for the installation of formwork devices 9 They are preferably internal stiffening ribs (already provided) 15 (see FIG. 2). In special cases, these stiffening ribs 15 can be connected, for example by welding,

  the fixing region 9a of the formwork removal device 9.

  However, a particularly advantageous structure is

  that provided for by the invention, according to which the provisions

  formwork 9 can be easily detachably connected to the formwork panels 4. For this purpose, in the fixing region 9a of the formwork devices 9 is provided a connecting bolt 16 or element of

  similar connection, and the formwork panels 4 pre-

  feel, at corresponding places, connection openings 17 (see FIGS. 3 to 5). The formwork removal device 9 has, above a carrier strip 18,

  as a fixing arrangement, a connecting tab 19 orient-

  tee roughly parallel to the stiffening rib

  corresponding 15 and carrying the connection bolt 16.

  This is mounted so as to be able to rotate and without being able to get lost in the connecting tab 19. The upper side 20 of the carrier strip 18 - seen in the longitudinal direction of the carrier strip 18 - can arrive, for example, at approximately until the connection of the two neighboring formwork panels 4a, 4b and is, for example, approximately at the height of the lower side 22 of the stiffening ribs 15. An essential point of the invention is that below of the edge stiffening rib 7b is a stop portion 12 recessed down relatively

  on the lower side 22 of the internal stiffening ribs

  ment 15 of the formwork panel not lowered. If the formwork supports 5 supporting the panel 4b to be removed as well as the corresponding bolts 8 are removed, the panel to

  form 4b falls first by a reinforcing rib

  edge cement 7b in the abutment part 12, of a height T, as indicated in phantom in 4b 'in FIG. 3. Consequently, the formwork panel to be dismantled 4b emerges from the floor to the desired extent. We can do it well

  tilt by its edge reinforcement rib 7b by-

  above the unwinding cam 13 of the formwork release device

  as shown in dotted line at 4b "in figure 3. The pan-

  formwork 4b, which hangs almost vertically, can then be easily removed. When dismantling a formwork panel 4b, it is not necessary to lower

  first a little of the supports and then remove them.

  The desired lowering of the panel to be removed 4b is obtained by virtue of the stop part shifted downwards. Such a formwork possibility is particularly advantageous in the case of formwork panels 4 whose edge stiffening ribs 7 slightly protrude from the flat side 23 of the panel, facing the concrete (see FIG. 3). This is not uncommon in the usual formwork panels 4 because the panel. of wood 24 varies a little in thickness in a known manner depending on temperature, humidity, etc. Under these conditions, it is known and desirable that the upper front side of the edge stiffening ribs 7 always protrude one

  short distance to the upper flat side 23 of the panel 24.

  It is thus ensured that on the lower side of the finished concrete floor 3, it cannot form projecting ribs if the flat side 23 of the wooden panel 24 exceeds the upper front side 25 of the marginal panels. Such protruding concrete ribs could only be removed from the floor 3 by significant work. On the other hand, grooves formed in the concrete floor 3 by edge stiffening ribs 7 protruding a little upwards are easy to plug. The structure of the various formwork panels 4, desirable for an advantageous manufacture of the floor 3, causes significant difficulties for formwork. They are very simply avoided thanks to the method according to the invention and to the formwork removal device according to the invention. For this purpose, the depth T of the abutment part 12 relative to the lower side 22 of the internal stiffening ribs of the non-lowered formwork panels 4 is chosen so that it is a little greater than the height h, the ribs of which edge stiffening 7 protrude from the flat side 23 of the panels 4, facing the concrete. Advantageously, the depth T of the stop part 1-2 can be around 8 mm. Thus, account is also taken of the spacing relative to the floor, necessary for the tilting of the

formwork panels.

  A relatively simple possibility of fixing the

  formwork device is ensured by the fact that it

  Ci has, in addition to the connection bolt 16, a tilting stop 26. As can be seen by the figures

  3 to 5, it is in the region of the inner end

  lower 27 of the formwork device 9, that is to say at the end, which is fixed to the formwork panel 4a still fixed first. The tilting stop 26 is formed by an arm 28 disposed on the side of the carrier strip 18 and bent approximately parallel to the connecting bolt 16. This arm can engage below the internal stiffening rib 15 (Figures 3 and 4), so that

  the formwork removal device 9 fixed by the connection bolt

  16 to the internal stiffening rib 15 is

prevented from tipping over.

  The unwinding side 29 of the unwinding cam 13 is curved or, as shown in FIGS. 3 and 5, it is bent. The end 29a of the unwinding side, which is close to the stop section 12 is a little stiffer than the end 29b of the unwinding side, which is turned towards

  the outer end 30 of the formwork removal device 9.

  In addition, the width B of the abutment portion 12 is slightly greater than the width b of the corresponding stiffening rib 7. Thanks to these measures, wedging is avoided.

  or similar difficulties during stripping and it is rela-

  tively simulates tilting the panel to be removed 4b

(figure 3).

  For the assembly of the floor formwork 1, it is possible to use not only formwork elements specially provided for floor formwork, but also usual wall formwork panels, if these are provided with connection openings 17, or zones similar connection, for formwork devices 9. Of course, the wall formwork panels, or similar formwork panels 4, provided as floor formwork elements, must also have the corresponding perforations 31 to accommodate the panel bolts formwork 8 or similar connecting elements. Correspondingly, the formwork panels 4 necessary for the method according to the invention or for the floor formwork according to the invention are, on the one hand, simple to manufacture and,

  on the other hand, usable in multiple ways in the construction

  tion. In FIGS. 3 to 5, it can be seen that the connection bolt 16 of the formwork release device 9 has a securing against the outlet, formed in the embodiment by a transverse pin 32. The opening

  corresponding connection 17 of the stiffening ribs

  ment 15 of the formwork panel 4 has an internal profile which adapts to it, so that in the insertion position, the transverse pin 32 can pass through the connection opening 17 (see figure 3 on the left). In the locked position

  (see figure 3 on the right and figure 4), the cross pin

  dirty 32 prevents the connection bolt 16 from accidentally coming out of the connection opening 17. It also ensures that the connection lug 19 of the formwork release device is pressed against the corresponding internal stiffening rib 15 and that the tilting stop 26 engages under the inner stop rib 15 (Figure 4). The connection bolt 16 is integral in rotation with a lever

  actuation 33. The transverse pin serving as

  jettement against the outlet is in the locked position when the actuating lever 33 has taken gravity to its low position. The advantage is not only that the formwork device has a simple structure and can be easily placed on a formwork panel 4 and be detached again. By virtue of its own weight, the actuating lever 33 also brings the bolt there.

24911 16

  connection 16 in the locking position or at least,

  holds this blocking position. As a result, it is largely excluded that parts of the formwork

  floor 1 which accidentally fall does not cause injury

  res or do not damage themselves. Figure 2 shows an aspect of the lower side of a formwork panel 4 as well as a partial view from below

  other formwork panels 4, which are assembled there.

  As we can see, this panel 4 has three ribs

  internal stiffening 15 oriented in the long direction

  gitudinal as well as four oriented in transverse direction

  dirty. Each of these has, in the vicinity of the nervu-

  corresponding edge stiffening res 7, a connection opening 17, or a similar connection zone, for the installation of a formwork release device 9 according to the invention. In the normal case, to form a floor formwork 1 composed of numerous panels 4, two formwork release devices 9 are needed which can easily be

  reuse when removing the next panel each time.

  It is also possible to disassemble more

  several panels 4 of a floor formwork 1. For example,

  it is possible to fold down several safety panels simultaneously

  ge placed side by side on a pivot axis. However, in certain cases, it is also possible to carry out the formwork process on either side of the formwork joint 6, at different locations in the floor formwork. In these cases, an even greater number of formwork release devices 9 is needed, for example four. These can always be reused during many formwork processes. Therefore, we only need a small

  number of formwork devices 9 of simple structure.

  With these, the transverse pin 32 also ensures that the connecting bolt 16 or its actuating lever 33 is disposed on the formwork device without power

to get lost.

  According to an advantageous embodiment, during the as-

  appearance of all the floor formwork 1, it can be ensured that a panel to be removed last is formed of a particularly light part which can then be removed without the help of the formwork removal device 9, manually or possibly using a crane. As already indicated, during the assembly of the floor formwork 1, it is also possible to use conventional formwork panels if they are suitably suitable for the installation of formwork release devices 9. The method according to invention and the corresponding ceiling formwork also allow,

  if necessary, manually mount different pan-

formwork bars 4.

  Figure 6 also shows an embodiment one

  little modification of the formwork device. This one does not

  no unwinding cam 13. On the other hand, the stop section 12, lowered relative to the lower side 22 of the corresponding stiffening rib, constitutes at the same time a unwinding section. In other words, it extends over a sufficient length towards the outer end 30 of the formwork device, so that the formwork panel 4b to be removed can surely be tilted, as described (see positions 4b 'and 4b "in Figure 3). In the embodiment of Figure 6, the upper side 20 of the carrier strip 18 is also below the lower side 22 of the rib

  internal stiffening 15 provided at this location. Provisions

  formwork stripping elements 9 designed more simply, in a manner analogous to FIG. 6, also allow panel 4b to be removed more simply, but the execution comprising the

  unwinding cam 13 is particularly advantageous.

  As can be clearly seen in FIGS. 3 and 6, a notch side 35, limiting the stop section offset downwards 12 on the side of the panel 4a carrying the formwork release device 9, or a similar limitation of the stop section , may be below the joint 21 of the panel to be removed and the panel still fixed 4b, 4a. If such a notch side 35 is provided, it can also be

  in the region of the panel still attached 4a (see Figure 6).

  An essential point is that the abutment section 12 or the formwork release device 9 are arranged in such a way that the edge stiffening rib 7b of the panel to be removed can descend unimpeded, from a distance T,

on the stop section 12.

  In this exemplary embodiment according to FIG. 6, it has also been indicated in dotted lines that the upper side of the

  unwinding section 34 has a profile 40, in part

  to have a transverse profile. As a result, already in this embodiment, the panel can be prevented from sliding

lowered that rests.

  All the characteristics indicated may have

  an inventive importance in isolation or in any combination

sounds.

Claims (18)

-R E V E N D I C A T I O N S-   1. Method of assembly and formwork removal   floor coverings made up of floor formwork elements   (formwork panels) for concrete work and the like   res, the formwork panels being interconnected and   supported during concreting and being at least partial-   ment freed from their connection and their supports for formwork removal, a process characterized in that during formwork removal, we first lower the panels to be removed by a small height (T), we lay them by one of their longitudinal sides on a stop offset about the same height downwards and then they are tilted (Pfl) around this support.   2. Method according to claim 1, characterized in that the assembly of a floor formwork (1) intended for a given region of floor is carried out, essentially over a large area and preferably while the underside of the panels formwork (4) is facing high, in a preparation station.   3. Method according to any one of the claims   1 and 2, characterized in that as a formwork panel to   remove last, a relatively light panel is provided.   4. Floor formwork for concrete work,   comprising several floor formwork elements (pan-   formwork) and auxiliary elements for their formwork, the formwork panels having at their   edges of stiffening ribs, or similar arrangements   res, which, at least in parts, protrude from the flat side of the panels, opposite the concrete, in particular for carrying out the method according to any one   claims 1 to 3, characterized in that the elements   auxiliary devices are formwork devices (9), which have a fixing region for connection to the underside of a first formwork panel (4a)   still fixed first of all as well as a stop part intended   born to engage below a second panel to be stripped (4b), the stop part (10) having, at least in the region of the stiffening rib (7) of the panel to be stripped (4b) stop (12) offset downwards 249 1,116   relatively to the lower sides (11) of the stiffening ribs of the non-lowered formwork panel (4), and in that in the formwork panels (4) are provided connecting points for the installation of the formwork devices (9 ). 5. Formwork according to claim 4, characterized in that its formwork release devices (9) can be easily detachably connected to the panels (4) and preferably have a connection bolt (16), or similar connection element , and the panels of   formwork have openings in corresponding places   connecting tures intended for this element, preferably   on internal stiffening ribs of the panels.   6. Formwork according to any one of the claims.   tions 4 and 5, characterized in that the formwork release device (s) (9) have as a fixing arrangement, above a carrier strip (18), a connecting tab (19) roughly oriented parallel to the corresponding stiffening rib (15) and carrying the connecting bolt (16), the latter being mounted so as to be able to rotate and preferably without being able to get lost in the connecting tab.   7. Formwork according to any one of the claims.   tions 4 to 6, characterized in that the upper side (20)   of the carrier strip (18) - seen in its longitudinal direction   nale - arrives roughly up to the connection (21) intended for the neighboring formwork panel to be stripped (4b), at this point is connected the stop part (12) offset downwards, and a stop is preferably provided tilt (26) projecting laterally on the carrier strip and which is preferably located in the region of the end   interior (27) of the formwork release device (9).   8. Formwork according to any one of the claims.   tions 4 to 7, characterized in that the carrier strip (18) of the formwork release device (9) carries, at its end (30)   facing the formwork panel (4b), the unwinding cam   Lement (13) whose side of unwinding (29) is preferably   curved or angled, so that the end (29a) near the stop part (12) is stiffer than Z491116   the end (29b) of the unwinding side, which is turned   towards the outer end (30) of the stripping device ge.   9. Formwork according to any one of the claims.   tions 4 to 8, characterized in that the width (B) of the stop part (12) is slightly larger than the width (b)   of the corresponding stiffening rib {7).   10. Formwork according to any one of the claims.   tions 4 to 9, characterized in that the stiffened ribs   sement (7), which are at its edges have holes (31) which correspond, for the establishment of elements   detachable link (bolts 8).   11. Formwork according to any one of the claims.   tions 4 to 10, characterized in that the connecting bolt   ment (16) of the formwork release device (9) has an assu-   throwing against the outlet, preferably a pin   transverse (32), and the corresponding connection openings   formwork panels (17) of the formwork panels (4) have an internal profile which adapts in the insertion position of the connecting bolt.   12. Formwork according to claim 11, characterized in that the connecting bolt (16) is integral in rotation with an actuating lever (33), and preferably the securing against the outlet (transverse pin 32) is in the locked position when the lever   actuation has taken, by gravity, its low position.   13. Formwork according to any one of the claims.   tions 1 to 12 in which the stiffening ribs of the edge of the panels possibly extend a little beyond the side   flat facing the concrete, characterized in that the depth   deur (T) of the abutment part (12) of the formwork device (9) relative to the lower side (22) of the non-lowered formwork panel (4) is larger, preferably taking into account the space required during the tilting formwork, that the height (h) of which the edge stiffening ribs (7) exceed the flat side (23) of the formwork panel, on the concrete side, preferably than the   depth (T) of the stopper part is approximately 8 mm.   14. Formwork according to any one of the claims.   tions 4 to 13, characterized in that the formwork panels provided are usual wall formwork panels, provided with connection openings (17), or connecting zones   similar, for formwork release devices (9).   15. Formwork according to any one of claims 4 to 14, characterized in that the formwork panels (4) each have at least two pairs of internal stiffening ribs (15) perpendicular to each other and, for each side, about two to four connection openings (17), or similar connecting areas, for one formwork release device.   16. Formwork according to any one of the claims.   tions 4 to 15, characterized in that following the stop part (12) offset downwards comes an unwinding part (34), preferably in the form of a cam unfolding (13).   17. Formwork according to any one of the claims.   tions 4 to 16, characterized in that the abutment part (12) offset downwards, on the recess side (35), or the like, of the panel (4a) carrying the stripping device (9),   located below the connection (21) of the panel   frer (4b) and the panel still attached (4a) or possibly   in the region of the panel still attached (4a).   18. Formwork according to any one of the claims.   1 to 17, characterized in that the upper side of the unwinding part (34) has a profile (40), in particularly a transverse profile.