DE3013642A1 - SWITCHING TABLE - Google Patents

Abstract

In order to displace the table, wheel arrangements (10) are provided. Each wheel arrangement is releasably connected to a vertical bar (3) of the table frame (2) by means of a sleeve (12). The latter is fastened, such that it cannot turn or slide, at the end of an associated horizontal bar (4) of the frame. In order to raise and lower the table, use is made in each case of a spindle device (11) which can be coupled and uncoupled by means of a snapping and latching connection (19). In this manner, a reliable and rapid connection of the wheel arrangement and the raising device is achieved. <IMAGE>

Description

Schaltis ch

The present invention relates to a formwork table consisting of a three-dimensional framework consisting of at least two horizontal and vertical bars comprehensive base frame modules, which have bracing horizontal and diagonal bars are connected to one another, and that on its upper side with a formwork skin equipped formwork element carries and with at least four to the lower end of the Vertical rods of the base frame connectable foot spindle arrangements for height adjustment of the table, as well as a corresponding number of wheel assemblies for the process of the table and devices for raising and lowering the table is.

Formwork tables of this type are primarily used as ceiling formwork. They are designed in such a way that they can be implemented as a unit, i.e. not dismantled can.

Such a relocation process takes place in the known formwork tables Kind in the following way: About the facilities for height adjustment, which mostly are designed as a telescopic base spindle, is after completion of the respective Ceiling section of the formwork table relaxed in its entirety.

Then the so-called transfer devices are rolled in, the one device for raising and lowering the formwork table - usually in the form of a known hand crank winch - as well as a wheel arrangement for moving the formwork table - usually in the form of a self-steering wheel - include. Since these converting devices are relatively are difficult, the rolling takes place by means of a device connected to the transfer devices Transport chassis over a separate pair of rollers.

After rolling, the relocating devices are fitted with quick-release fasteners in the form of clamps coupled to the vertical bars of the base frame and the formwork table lowered to the required travel height. For operating every transfer device an operator is therefore necessary.

Since formwork tables of this type usually operate with four relocating devices a total of four people are required to operate.

After lowering, the formwork table is extended and lifted again at the new place of use over the device. The fine tuning of the After this work step, the formwork table takes place via the foot spindle arrangements.

Before or after this fine adjustment, the transfer devices are again uncoupled and rolled over the transport chassis to a storage location where they are then ready for the next use.

Formwork tables of this type have in principle worked well in practice proven. However, the process of coupling the relocating devices requires a certain amount of care and control. Only then is a safe connection via the quick-release fasteners guaranteed if the clamps are tightened sufficiently. This requires compliance with a certain tightening torque for the screws and thus a precise control by a specialist. Also because of the construction it is not ensures that the quick-release fasteners of a formwork table are each in the same Height to be coupled to the base frame modules. In addition, this is rolling and transporting away the relocating devices for the implementation of the network process. time consuming and labor intensive.

The object of the present invention is to provide a formwork table of the initially described type in such a way that with a technically simple structure a With regard to the position, the connection of the wheel arrangement is precisely defined, safer and faster and the device for raising and lowering is achieved without having to touch the base frame modules fixed connection receptacles must be provided.

This object is achieved according to the invention in that the wheel assemblies connected to the lower end of the vertical bars of the base frame each via a sleeve are located in a known manner on the horizontal bar of the base frame rotatably and shift-proof supported, and that the device for lifting and Lowering on the respective wheel arrangement by means of a snap or snap-in connection can be connected and disconnected.

The features according to the invention make a formwork table for the first time created, with which a positive connection of the wheel assemblies and the devices for raising and lowering is achieved. The technical structure is so simple that the coupling process can also be carried out by unskilled workers. A check of the position of the elements, as well as a check of the tightening torques for the fastening screws are not required here. The wheel arrangement is always secure against twisting and shifting at the lower end of the vertical rod of the base frame attached without the need for fixed connection receptacles on the base frame modules Need to become.

Due to the design according to the invention, the wheel assemblies remain always connected to the formwork tables. Only the devices for lifting and Lowering must be brought up for the relocation process. Without the coupled ones Wheel assemblies, however, these devices are considerably lighter and therefore more manageable and easier to transport. This is not least due to the fact that the heavy and bulky connection mechanics required for transfer devices of the known type as the transport carriage with the pair of transport wheels is omitted.

Formwork tables designed according to the invention are therefore constructive in their construction The structure is less complex than previously used formwork table constructions to a simplification of the relocation process and enable the shortening of the shuttering times.

A particularly useful embodiment is obtained when the sleeve is formed by the slip-on tube of a foot spindle arrangement known per se. at Such a construction are the foot spindle assembly for height adjustment of the table and the wheel assembly for moving the table to form a construction unit summarized, only the device for the time of the relocation process coupled for raising and lowering by means of a snap-in or snap-in connection will. Such a configuration also has the advantage that the devices for raising and lowering not just one formwork table, but a number can be used by formwork tables. Compared with the known heavy ones Transfer devices are the devices for lifting and lowering relatively light and Can be transported without special transport chassis.

In a preferred embodiment, the wheel assembly includes a Arm on, one end of which is attached to the sleeve and its free end, the bottom facing other end equipped with a known, self-steering wheel is. Such a construction is not only relatively simple and therefore cheap manufacturable, but also compared to known constructions not very expansive. The self-steering wheel is also aligned (including one such Wheel arrangement to be understood, the horizontal wheel axis opposite to the vertical Axis of rotation of your turntable is offset) automatically according to the one on the table acting displacement force, so that a special control for the wheel does not necessary is.

Snap-in or snap-in connections for the lift-off device and Lowering can be implemented in the most varied of ways. A very robust, reliable and easy to use embodiment of such a snap or snap-in connection comprises two locking elements arranged one above the other, of which the lower locking element on the underside of the arm ulnd the upper Locking element engages on the top of the arm. It is useful to that one of the two locking elements is stationary and the other locking element is designed to be engaged and disengaged.

In a preferred embodiment, the lower locking element is a hook that engages behind the arm, can be engaged or disengaged, and the upper locking element a fixed, vertically protruding bolt that goes into one on the top the arm arranged bore protrudes. Such a configuration is therefore particularly useful because the vertical protruding bolts only from above into the one on top of the arm Inserted the hole and then swiveled the hook under the arm got to. The hook then snaps back in the final position the arm, so that a firm connection between the lifting device and lowering and arm is made.

Ultimately, the coupling process is limited to the Attachment of the device to a simple pivoting movement caused by the snap action of the hook is completed. By arranging appropriate guide tongues the implementation of the two movements can be simplified by forced guidance will.

It is useful that the locking elements each to the Ends of roughly horizontally extending arms are attached to the other Each end is attached to the device for raising and lowering.

In a preferred embodiment, the overlap or underneath Arm stub the arm so that the forces that occur when lifting and lowering are not must be removed by the locking elements themselves.

To avoid a pivoting movement of the device in the anyekuppelte In the current state, it is advisable to connect the arm stubs to one another by means of a strut, which has a contact surface for a side surface of the arm.

In order to be able to transfer high forces via the lower stub of the arm, is it is advisable to provide a diagonal support strut between the arm stubs.

In a preferred embodiment, the hook is at the end of the Arranged under the arm stub and resiliently in by means of a spring his indented Position held. Such a design is absolutely reliable even in rough construction site operations.

To simplify the uncoupling process, it is useful that the hook can be disengaged by means of an actuator. Such an actuator can preferably be a push button located on the top of the arm, which is connected to the hook via a rod protruding through the strut.

A particularly robust and well-protected arrangement is achieved by that the spring is a compression spring arranged on the rod, which moves with its lower end on the stub of the arm and with its upper end on one through the rod supports protruding pin.

To simplify the coupling process, it is useful that the hook has a slide-on bevel on its face. That way will the hook when carrying out the pivoting process by the arm against the force pushed back by the spring. An actuation of the hook during the coupling process is thus superfluous.

It is useful that the upper arm stub with a guide tongue Is provided. This will make the threading of the vertically protruding bolt facilitated in the arranged on the top of the arm hole.

It is useful as a device for raising and lowering itself provide known hand crank winches. Such hand crank winches have been in the rough Construction site operation excellentKL has proven itself as it is very robust and against environmental influences are largely insensitive.

Due to the defined arrangement of the device for lifting and It is possible to lower the base frame, either two or all of the devices to be coupled to each other for raising and lowering the table via a connecting link.

This can reduce the number of operators for the transfer process be reduced. Are there two devices for raising and lowering the Tables coupled with one another via a connecting link are reduced in the case of formwork tables usual size the number of operators to two. With conventional formwork table constructions four operators were always required for this.

Are all devices for raising and lowering via connecting links coupled to one another, the lifting or Lowering process, if necessary can be carried out by an operator.

A particularly simple coupling of the devices for lifting and Lowering is achieved by means of telescopic extendable rods. In the case, that all devices for raising and lowering are connected to one another via connecting links are to be coupled, the connecting links can also include linkages.

In a preferred embodiment of the formwork table according to the invention if the formwork surface of the formlining is less than 7.5 m2. Such, compared to known Formwork table constructions Relatively small formwork tables have a number of advantages. So the wheel assembly and the device for raising and lowering in such small formwork tables very compact in terms of dimensions and weight can be measured very easily. Even requires the relocation process in In the case of the use of connecting links by the operators required for this only a lower use of force.

In addition, the construction cranes, which are usually overloaded on construction sites, have to be moved the formwork table from one floor to another is no longer necessary as this due to their small dimensions easily by means of conventional high-speed pallet trucks can be moved.

Another advantage of such small formwork tables is that they are simpler Adaptability to complicated floor plans.

A precise pre-planning is therefore with such small formwork tables unnecessary. The number of formwork tables with special dimensions can also be reduced will.

In summary, it thus results that equipped according to the invention with Formwork tables with a small formwork surface, the greatest possible adaptability, a crane-independent one Use, a waiting time-free, unbound workflow with a maximum of Work efficiency can be achieved.

The following is for further explanation and better understanding an embodiment of the invention with reference to the accompanying drawings described in more detail.

Fig. 1 shows a formwork table of the type according to the invention with a Formwork area under 7.5 m27 which is currently being transferred to another with a small high-speed pallet truck Floor is moved, Fig. 2 shows on an enlarged scale the detail II of Fig. 1 with uncoupled lifting gear and coupled device for lifting and lowering, and FIG. 3 shows the partially broken away on an enlarged scale Device for raising and lowering of Fig. 2 in the direction of arrow III (without wheel arrangement and base frame or foot spindle arrangement).

The formwork table 1 shown in Fig. 1 consists of a spatial Truss, which bristles from two base frame modules 2, of which due to the view in Fig. 1 only a base frame module 2 can be seen. Each base frame module 2 consists of two vertical bars 3 which are connected to one another via horizontal bars 4. The frame designed in this way is stiffened by a diagonal bar 5.

The base frame modules 2 are through in the present opinion invisible stiffening horizontal and diagonal bars to form a three-dimensional framework connected with each other.

On the top of the framework rests a formwork element 6, the one Formwork skin 7 carries.

As can be seen from Fig. 2, each is in the area of the lower end Vertical rod 3 arranged a construction unit 8, which consists of a known per se Foot spindle assembly 9 for height adjustment of the table, a wheel assembly 10 for Moving the table and a device 11 for raising and lowering the table consists.

The foot spindle assembly 9 has a sleeve 12 on the lower End of the vertical rod 3 of the Grundrallmens 2 is attached. The sleeve owns a slot, the width of which is slightly larger than the diameter of the horizontal rod 4 of the frame. At the longitudinal edges of this slot of the sleeve 12 extend Lugs 13 which have a bore 14 for a through bolt.

As can be seen from Fig. 2, the horizontal bar 4 of the base frame rests in such a way in the slot of the sleeve 12 that the sleeve on the one hand prevents it from sliding up is secured against rotation on the vertical rod 3 and on the other hand. A pull the sleeve 2 of the vertical rod is after the bolt has been inserted into the bores 14 the tabs 13 are also no longer possible. Thus, the sleeve 12 is twistable and Fixed to the vertical rod 3 so that it cannot move. An arm 15 is attached to the sleeve 12 attached, the at its free end facing the ground a known self-steering wheel 16 is equipped, the horizontal The axis of rotation 17 is offset with respect to the vertical pivot axis 18.

By means of a snap or snap-in connection 19, which is shown in FIG. 3 is shown in detail on an enlarged scale, the device 11 is for Raising and lowering coupled to the arm 15 of the wheel assembly 10.

The snap-in or latching connection 19 comprises two one above the other Locking elements, of which the lower locking element is the arm 15 engaging and disengaging hooks 20 and the upper locking element is a fixed, vertically protruding bolt 21. Both the hook 20 as also the bolts 21 are each at the ends of approximately horizontally extending arm stubs 22 and 23 are arranged, the other ends of which on a known hand crank windc 24 are attached. The distance between the arm stubs 22 and 23 is dimensioned such that they reach over or under the arm 15 of the wheel assembly (see FIG. 2).

The arm stubs 22 and 23 are connected to one another by means of a strut 25 connected and stiffened by means of a diagonal support strut 26.

The hook 20 is designed approximately roof-shaped, so that on its top a ramp 27 is formed. The hook 20 is attached to a lever 28, which protrudes into the stub arm 22 and within the stub arm by a horizontal Axis 28 is pivotably mounted.

A rod 30 is hinged to the lever 28 and extends through the strut 25 hindurdh extends and at its end opposite the lever 28 a push button 31 which is mounted in a bore on the upper side of the arm stump 23.

On the rod 30 is a compression spring 32 within the strut 25 arranged, which is with one end on the lower arm stub 22 and with its other end is supported on a pin 33 projecting through the rod 30.

At the free end of the stub arm 23 in the area of the bolt 21 is a Guide tongue 34 is provided, which protrudes beyond the underside of the arm stub 23 Tcil is bent at about an angle of 300.

To couple the device 11 to the wheel assembly 10, the device only with the bolt 21 in a hole 35 (see. Fig. 2) on the top of the Arm 15 is pushed in with the device in a slightly tilted position and the hook 20 be pushed through a simple tilting movement under the arm 15 until the Arllayefl.iclle 36 of the strut 25 rests against the side surface of the arm 15.

During this tilting process, the hook 20 is due to the Aufgleitschräye 27 deflected against the force of spring 32 in the direction of arrow 37. As soon as the Kippbewegunguncj is ended, i.e. the contact surface 36 of the strut 25 on the side surface of the arm 15 is applied, the hook 20 jumps into the position shown in FIG back and thus heals the device 11 in its coupled position.

The guide tongue 34 on the arm stub 23 is simplified at the beginning of the coupling process the insertion of the bolt 21 into the bore 35 on the top of the arm 15.

During the tilting process, the arm stubs 22 and 23 - as shown in FIG. 2 can be seen - positively guided by means of guide tongues 38.

Should the coupling now be released, i.e. the device 11 from the wheel assembly 10 are uncoupled, then only the push button 31 on the top of the Arm stumble 23 pressed down and the hook 20 by pivoting the device 11 pivoted out in the direction of arrow 39 under the arm 15 of the wheel assembly 10 will. The pivot point is in this Schwenkvorgany approximately between the Tip of the bolt 21 and the guide tongue 34.

As mentioned at the beginning, two or more devices can be used for lifting and lowering are each coupled to one another by means of a connecting element. Such a connecting link in the form of a telescopically extendable rod 40 is indicated in FIG. 2. The rod is used to connect two devices only pushed with their ends on the square pin 41 of the hand crank winch 24. If the crank 42 of the hand crank winch 24 is then actuated, two at a time Devices driven together.

About angular gear, not shown in the drawings, can also four devices for raising and lowering coupled in this way will.

The high-speed lift truck 43 shown in FIG. 1 grips with its crane hook 44 the ring of a lifting gear 45, the suspension ropes 46 (with dash-dotted lines Lines shown) in the present exemplary embodiment via a quick-release fastener 47 are each coupled to the arms 15. Implementation of the invention Formwork tables of small dimensions can be used in this way without the use of the construction site crane possible.

L e r s e i t e

Claims (21)

Formwork table P A T E N T A N S P R Ü C H E 1. Formwork table, consisting from a spatial framework consisting of at least two horizontal and vertical bars comprehensive base frame modules, which have bracing horizontal and diayonal bars are connected to one another, and that on its upper side with a formwork skin equipped formwork element carries and with at least four to the lower end of the Vertical rods of the base frame connectable foot spindle arrangements for height adjustment the table, as well as a corresponding number of wheel assemblies for procedure of the table and devices for raising and lowering the table is, by the fact that the wheel assemblies (10) are attached to the lower The end of the vertical bars (3) of the base frame (2) are each connected via a sleeve (12) are, which are in a known manner on the 1iorizontalstab (4) of the base frame rotatably and shift-proof supported, and that the device (11) for lifting and lowering on the respective wheel assembly by means of a snap or snap-in connection (19) can be connected and disconnected. 2. Formwork table according to claim 1, characterized in that g e k e n n -z e i c h n e t that the sleeve (12) from the slip-on tube of a foot spindle arrangement known per se (9) is formed. 3. Formwork table according to claim 1 or 2, characterized in that g e -k e n n z e i c Note that the wheel assembly (10) has an arm (15), one end of which is attached to the sleeve (12) and its free, the ground facing other The end is equipped with a known, self-steering wheel (17). 4. Formwork table according to claim 1 and 3, characterized in that g e -k e n n z e i c Note that the snap or snap lock (19) are two arranged one above the other Includes locking elements, of which the lower locking element on the Underside of the arm (15) and the upper locking element on the top of the Armes attacks. 5. Formwork table according to claim 4, characterized in that g e k e n n -z e i c h n e t that one of the two locking elements is fixed and the other one and is designed to be disengageable. 6. Formwork table according to claim 4 and 5, characterized in that g e -k e n n z e i c h n e t that the lower locking element engages behind the arm (15) insertable and disengageable hook (20) and the upper locking element a fixed, vertically protruding bolt (21) that goes into one on top of the arm arranged bore (35) protrudes. 7. Formwork table according to claim 4, 5 or 6, characterized in that g e -k e n n z e i c h n e t that the locking elements each at the ends of approximately horizontal extending arm stubs (22, 23) are attached, the other end of each on is attached to the device (11) for raising and lowering. 8. Formwork table according to claim 7, characterized in that g e k e n n -z e i c h n e t that the arm stubs (22, 23) reach over or under the arm (15) and by means of a strut (25) are connected to each other, which has a contact surface (36) for a Has side surface of the arm. 9. Formwork table according to claim 7 or 8, characterized in that g e -k e n n z e i c Note that between the arm stubs (22, 23) there is a diagonally extending support strut (26) is provided. 10. Formwork table according to claim 6 and 8, characterized in that g e -k e n n z e i c n e t that the hook (20) at the end of the arm stub (22) engaging under the arm and is resilient in its engaged position by means of a spring (32) is held. 11. Formwork table according to claim 10, characterized in that g e k e n n -z e i c h n e t that the hook (20) can be disengaged by means of an actuating member. 12. Formwork table according to claim 8 and 11, characterized in that g e -k e n n z e i c h n e t that the actuator one on top of the arm stub (23). arranged push button (31), which protrudes through a through the strut (25) Rod (30) is connected to the hook (20). 13. Formwork table according to claim 10 and 12, characterized in that g e -k e n n z e i c h n e t that the spring (32) is a compression spring arranged on the rod (30) is, which is with its lower end on the arm stub (22) and with its upper End supported on a through the rod (30) protruding pin (33). 14. Formwork table according to one or more of the preceding claims, as a result, that the hook (20) has one on its end face Has slide-on slope (27). 15. Formwork table according to claim 6 and 7 or 8, characterized in that g e k e n n z It is n e i t h e t that the upper arm stub (23) is equipped with a guide zone (34) is. 16. Formwork table according to claim 1, characterized in that g e k e n n -z e i c h n e t that the device for raising and lowering a known hand crank winch (24) is. 17. Formwork table according to claim 1, characterized in that g e k e n n -z e i c h n e t that two devices (11) for raising and lowering the table over a link are coupled together. 18. Formwork table according to claim 1, characterized in that g e k e n n -z e i c h n e t that all devices (11) for raising and lowering via connecting links are coupled to each other. 19. Formwork table according to claim 17 or 18, characterized g e -k e n n z e i c h n e t that the connecting links telescopically extendable rods (40) are. 20. Formwork table according to claim 17 or 18, characterized g e -k e n nz e i d e t that the connecting links comprise articulated gears. 21. Formwork table according to one or more of the preceding claims, as a result, the surface of the formwork facing (7) of the formwork element is indicated (6) of the formwork table (1) is below 7.5 m2.