DE102008000381A1 - Formwork element i.e. formwork panel, for use in construction sites, has frame element and formwork shell arranged such that shell holds concrete until hardening, and transponder identifying formwork element and arranged at or in shell - Google Patents

Abstract

The formwork element (1) has a supporting frame element (2) and a formwork shell (3) supported by the frame element. The frame element and the formwork shell are arranged such that the formwork shell holds a pourable concrete until hardening. A transponder (4) identifies the formwork element. The transponder is arranged at or in the formwork shell. The transponder is arranged to ensure screening by the frame element during stacking regarding transmission and reception-capabilities. A sensor and/or the transponder is arranged in or at a traction side of the formwork shell. The sensor is designed as temperature sensors, pressure sensors and/or extension sensors. An independent claim is also included for a set comprising formwork elements with a transponder.

Description

The The invention relates to a formwork element with a supporting frame element and a formwork skin carried by the frame member, wherein the frame member and the formwork skin are designed and arranged such that the Cladding flowable concrete until it hardens to hold and wherein the formwork element at least one transponder for Identification of the shell element has.

such Formwork elements, also as concrete system formwork or formwork element referred to, are used on construction sites to provide fresh, flowable Keep concrete in shape until it hardens. The formwork elements are usually made of a durable stable frame element and a stable skin worn therein, wherein the formwork, which is in contact with the concrete in the position of use occurs, subject to greater wear. It should be noted in particular that it is at Exposed concrete arrives on as intact a formwork skin as possible. However, in practice this is only for a short time, so there is a need to replace the formwork. In the case of formwork elements, usually the frame hardly comes or not at all in shaping manner with the concrete in contact.

Examples of such formwork elements are in particular EP 0 573 450 B1 . EP 0 729 536 B1 and DE 24 26 708 C3 described.

DE 100 55 060 A1 and DE 20 2007 002502 describe a provided with a transponder panel, wherein the transponder is attached by means of a special holder in the frame part or edge is embedded in a recess in the frame. As a result, each formwork element is clearly identifiable and its history can be traced back roughly, namely number and duration of the lettings. A conclusion on the actual aging or wear of the formwork elements is therefore very imprecise possible.

As a result, It is an object of the present invention, an improved formwork panel provide.

These Task is solved by a switchboard with the features of the main claim. Advantageous embodiments are the subject the dependent claims.

According to the invention initially provided that the transponder on or in the Formwork skin is arranged. Therefore, if necessary, the transponder replaced with the worn formwork skin. The number The work assignments or lettings can thus be easier tracked as in the known from the prior art transponder in the frame element. The formwork wears earlier and it is therefore crucial for that actual wear. It is above that in the prior art In addition, the corresponding transponder ID further data to assign, namely the date to which the formwork last was changed. This effort is avoided here because in the Applying a new formwork skin at the same time a new transponder with new transponder ID is used. It is now easier to Estimate the condition of the frame element to be rented.

Preferably the transponder is attached to or in the formwork skin such that even when stacking a variety of formwork elements as possible low shielding by the stacked metallic frame elements is effected. This means every measure, it allows all transponders of a stack of formwork elements read out without separating the formwork elements. This can be different Species are caused, for. By selecting a maximum distance to adjacent metallic parts of the frame or running in the frame Between carriers. Alternatively, the antenna of the transponder in be guided by an appropriate direction and / or in particular via a capacitive / inductive coupling connected to an outside of the frame mounted antenna be. This is important in terms of capturing the existing ones Shutter elements or transponders for rental or return. A stack in the sense of the invention comprises at least 4, typically 5 to 10 stacked elements.

A further embodiment of the invention, which is also independent can be realized from that described above, provides that at least one sensor is coupled to the transponder, with the data can be generated with the actual Aging of the shell element correlate. Such sensors include in particular temperature, pressure and / or strain sensors, the are preferably provided on / in the formwork skin. With the o. G. Sensors can be used for aging or wear of the Shutter, in particular the formwork, relevant parameters capture and thus the actual state of wear determine. In contrast to the prior art, one obtains According to the invention, a statement about the mere number of rentals and rental duration goes. There is an exclusion about whether one Shutter element during the rental period multiple times was used (eg about the number of load changes) or improperly (eg over the maximum Temperature under load and / or the maximum load) was used, or anangemessen was heavily loaded. This allows a new pricing model for rental.

Preferably is the sensor and / or the transponder inside or on the train side the formwork provided. The train side is particularly suitable for the application of strain sensors. In addition, the forming surface of the formwork is not affected by the or introducing the sensor impaired. Therefore, can the sorber / transponder can be inserted with little effort, without to rework the job.

In In another embodiment, the transponder is in one piece formed with the sensor, so that the mounting of the same less Work requires, the provision of multiple sensors - regardless, whether in one piece or separately to the transponder - allows either monitoring different locations of the formwork for example, to detect local overloads and / or the simultaneous registration of various parameters, eg. B. temperature and strain values.

Preferably The transponder also includes a memory around that of the sensors save captured parameters. These are then for the further processing to determine the actual Aging of the formwork element retrievable. From the parameters can be Generate data consistent with actual aging (im Sense of wear) of the shell element. According to the invention, it does not matter whether these data are generated in an evaluation unit, which in the Transponder is integrated or independent of the transponder is present. In the first case, the transponder itself with the Aging of the shell element generates correlating value and this subsequently via a preferably wireless Transfer the connection to the user, if necessary together with the element ID. In the second case, however, the evaluation unit reads over Radio the detected by the sensors and stored by the memory parameters and calculates the aging value.

In Another embodiment of the invention is the transponder and / or the antenna of the transponder in the edge region of the frame element arranged so that a readout even when present a large Stack of full formwork elements is easily possible. there are the sensors mounted on the formwork on a specialist common type connected to the transponder, preferably by inductive / capacitive coupling, the sensor can also have their own sub-transponder, which is identical to the actual one Transponder, for example in the edge region of the frame element, communicated.

Further is intended to improve readability and reduction the shielding of the transponders in stacked formwork elements, a set of at least 2, preferably 4 and especially preferably 8 different switching elements is provided, which is characterized by the position of the transponder or antennas in or on the formwork skin differ. This prevents being identical in a stack arranged transponders shadow each other.

transponder can be active or passive. Under passive transponders One understands systems that are used for communication and / or processing internal processes only needed energy refer to the field of the readout unit. Active systems have but with its own energy supply, often in shape of batteries / rechargeable batteries. This does not work with active transponders only large communication ranges possible and also the administration of larger data storage or the operation of the sensors can be realized.

There the sensors and storage elements require power also the following solutions: Because of the limited Life of a formwork skin is an energy storage, eg. B. battery, battery or capacitor provided. This one is dimensioned so that he provides sufficient energy for the life of the formwork. The energy can also make the energy storage, in particular, inductive be supplied, for example, before each rental or in the formwork / the shell integrated solar cells.

Prefers are provided for generating electrical energy piezoelectric elements. These provide pressure relief on the formwork Electricity that can be stored. As part of the mission comes it anyway to changed pressurization, so that a much used Schalelement, which more power to register and Saving the parameters needed, also receives more power. Preferably, the current-generating piezoelectric elements also form at the same time Compression / tension sensors, so they are used as strain gauges used. This component is thus an energy generator and sensor in one.

• – Bereitstellen eines Schalelements mit einem tragenden Rahmenelement und einer vom Rahmenelement getragenen Schalhaut, wobei das Rahmenelement und die Schalhaut derart ausgebildet und angeordnet sind, dass die Schalhaut fließfähigen Beton bis zum Aushärten zu halten vermag, wobei das Schalelement mindestens einen Transponder zur Identifizierung des Schalelements und einen mit dem Transponder gekoppelten Sensor aufweist, der derart ausgebildet und angeordnet ist, dass Daten erzeugbar sind, die mit der tatsächlichen Alterung des Schalelement korrelieren;
• – bestimmungsgemäßes Verwenden des Schalelements auf einer Baustelle und dabei Aufzeichnen von durch den Sensor erzeugten Messwerten, insbesondere Druck, Temperatur, Dehnung durch den Transponder;
• – Auslesen der Messwerte bei der Rückgabe der Schalelemente und Errechnung von Daten, die mit der tatsächlichen Alterung des Schalelements korrelieren aus den Messwerten oder Errechnung von Daten, die mit der tatsächlichen Alterung des Schalelements korrelieren aus den Messwerten im Transponder und Auslesen der Daten bei der Rückgabe; und
• – Zuordnung der Daten zu dem Schalelement,
• – Optional: Feststellen einer Entscheidung, ob das Schalelement erneuert werden muss in Abhängigkeit von den Daten,
• – Optional: Festsetzen eines Vermietungspreises in Abhängigkeit von den Daten.

According to the invention, a novel method for renting formwork elements is disclosed, which exhibits the above-mentioned advantages and effects, with the following steps:

• - Providing a formwork element with a load-bearing frame member and a formwork shell worn by the frame element, wherein the frame member and the formwork skin are designed and arranged such that the formwork is able to hold flowable concrete until curing, wherein the formwork element at least one transponder for identifying the formwork element and having a coupled to the transponder sensor, which is formed and arranged is that data can be generated that correlate with the actual aging of the switching element;
• - Proper use of the formwork element on a construction site and thereby recording measured values generated by the sensor, in particular pressure, temperature, elongation by the transponder;
• - Reading out the measured values when returning the formwork elements and calculating data that correlate with the actual aging of the formwork element from the measured values or calculating data that correlate with the actual aging of the formwork element from the measured values in the transponder and reading out the data during the return ; and
• Assignment of the data to the formwork element,
• Optionally: determining a decision as to whether the formwork element needs to be renewed depending on the data,
• - Optional: Setting a rental price depending on the data.

Further Advantages will be apparent from the following description and appended hereto Drawing. Likewise, the above and beyond executed features according to the invention in each case be used individually or in any combination with each other. The mentioned embodiments are not to understand conclusively and have exemplary character.

1 shows a section through the left side of a formwork element 1 with a supporting frame element 2 , which is designed as a metallic hollow profile. The profile is encircling and forms a frame in the top 21 a formwork skin 3 being worn, being at the top 21 horizontal and vertical stop surfaces 22 . 23 for receiving a formwork skin 3 are provided. The formwork skin 3 here includes a stable support plate 31 as a substrate and Schalfolle 32 as a surface whose surface has a shaping effect on the concrete during pouring. The frame element 2 and the formwork 3 So are designed and arranged so that the formwork 3 flowable concrete is able to hold until it hardens.

The formwork element 1 has a transponder 4 for identifying the switching element, wherein the transponder 4 with antennas 41 here in the bottom of the formwork 3 or their support plate 31 is admitted, z. B. by gluing, resin, mechanical fasten. The transponder 4 here comprises the sensors according to the invention, not shown. In the embodiment, the transponder 4 between horizontal stroke 22 and support plate 31 provided so that, for example, the pressure between the two components mentioned can be determined. It is understood that the same effect can be achieved if the transponder or the sensors in the frame 2 are housed. Also transponder or sensors can basically be mounted anywhere in the formwork, so they can be further away from the edge.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 0573450 B1 [0003]
• EP 0729536 B1 [0003]
• - DE 2426708 C3 [0003]
• - DE 10055060 A1 [0004]
• - DE 202007002502 [0004]

Claims (16)

Formwork element ( 1 ) with a supporting frame element ( 2 ) and a formwork skin carried by the frame element ( 3 ), wherein the frame element and the formwork skin are designed and arranged such that the formwork can hold flowable concrete until it cures, wherein the formwork element ( 1 ) at least one transponder ( 4 ) for identifying the formwork element, characterized in that the transponder ( 4 ) on or in the formwork skin ( 3 ) is arranged Formwork element according to claim 1, characterized in that the transponder ( 4 ) is arranged such that, with regard to the ability to transmit and receive, less shielding by the frame element (FIG. 2 ) is effected when stacking the same. Formwork element according to one of the preceding claims, characterized in that the transponder on or in the underside of the formwork skin ( 3 ) or its carrier plate ( 31 ), in particular by gluing, resining, mechanical fastening. Formwork element ( 1 ), in particular according to one of the preceding claims, with a supporting frame element ( 2 ) and a formwork skin carried by the frame element ( 3 ), wherein the frame element ( 2 ) and the formlining ( 3 ) are designed and arranged such that the formwork can hold flowable concrete until it has hardened, wherein the formwork element has at least one transponder ( 4 ) for identifying the formwork element, characterized in that the formwork element at least one with the transponder ( 4 ) coupled sensor which is designed and arranged such that data can be generated, which with the actual aging of the switching element ( 1 ) correlate. Element according to one of the preceding claims, characterized in that the sensor in or on the formwork skin is provided Element according to one of the preceding claims, characterized in that as a sensor temperature, pressure and / or Strain sensors are provided. Element according to one of the preceding claims, characterized in that the sensor and / or the transponder are provided in or on the tension side of the formwork skin. Element according to one of the preceding claims, characterized in that the transponder in one piece is formed with the sensor. Element according to one of the preceding claims, characterized in that a plurality of sensors are provided. Element according to one of the preceding claims, characterized in that the transponder is a memory for Comprises storage of the parameters detected by the sensors, especially for the storage of date, pressure, temperature, strain history, Number of load changes and these data are retrievable. Element according to one of the preceding claims, characterized in that an evaluation unit is provided, which generates data from the parameters that match the actual Aging of the shell element correlate. Element according to one of the preceding claims, characterized in that the evaluation unit independently is arranged by the switching element and a wireless Connection with the memory is connectable. Element according to one of the preceding claims, characterized in that the evaluation unit in or on the formwork element The data is arranged with the actual aging correlate the Schalelement, are accessible via the transponder. Element according to one of the preceding claims, characterized in that the transponder or the antenna of Transponders is arranged in the peripheral area. Set consisting of a variety of formwork elements according to one of the preceding claims, characterized that the set at least 2, in particular 4, in particular preferably 8 different shell elements, which differ by that arranged on or in the formwork skin transponder or Antennas are arranged at different positions. Set consisting of a variety of formwork elements according to one of the preceding claims, characterized that the set at least 2, in particular 4, in particular preferably 8 different shell elements, which differ by that the antennas of the arranged on or in the formwork skin transponder are arranged at different positions.