DE2019301A1 - Method and device for the production of concrete elements, preferably cable duct blocks - Google Patents

Description

"Method and device for the production of concrete elements, preferably cable duct ^{blocks 11} * UI αOU T

The invention relates to a method and an apparatus for the production of concrete elements, especially cable duct blocks «

For the production of concrete elements, especially cable duct blocks, The most diverse processes are known • and in use, In addition to the manual production of Concrete elements »In particular, cable duct blocks, there are known methods and devices in dismountable forms for machine production »

There are known methods and devices in which in particular Cable duct blocks analogous to pipe production in vertical Arrangement to be made »The filling of the mold equipment arranged either above or below the corridor operations is carried out in a known manner by metering belts. The mass introduced is then compacted Core vibrators and external vibrators ».

In other known processes, molded cable duct blocks are preferably manufactured in a horizontal arrangement the production is done in one step by 180 ° tiltable device made, the recess-forming Kfemelemente only half of the concrete molding capture \ and after rotating the shape, edit the other half will * In these known processes, the shape-forming Kernel elements designed as vibrators *

In another process, concrete elements are converted into a)? • Combined form, with a three-sided form due to the outer form parts closed frame is created in which the / recess-forming Elements are stored, manufactured * Bti these

000840/1143 '- ³ ~

, ■ '* BADOWQiKlAl.

known processes are first the Mold side parts moved in a horizontal direction »whereby the core tubes are drawn with a forced delay ·

It is also known that to achieve smooth Inner walls of the recesses of the concrete elements the core «· elements are set in rotation,

With the known methods and devices of the vertical » production is borrowed from pipe production

* Technologies that also address the disadvantages of pipe manufacturing Transfer the cable duct formulas to be preferably manufactured In particular, the filling of the standing forms is uneconomical, since a greater expenditure of time due to the low Filling cross-section is required.

In these known methods, the compression under load is probably not fully effective, since the effective area is too small and compared to the volume and length of the concrete molding is in an unfavorable relationship - it will be

m claims that there is no uniform compaction of the entire concrete cross-section, so that when the center of gravity of the friachentschalt elements is shifted during transport or movement, deformation and cracking occurs, which in particular in the case of cable duct blocks, the usability of the concrete element; It also states that the storage space that is required for subsequent treatment of the elements cannot be used optimally.

0Q8848 / U4f

ORIGINAL INSPECTED

This method has a further disadvantage, in that considerable construction work is required for setting up the machine equipment, since foundation pits up to 2.5 m deep have to be created. In this process, the latest technical knowledge of unblocking by turning the core elements is not used, so that an additional work step is required in order to achieve a high quality of the recesses, especially in cable duct blocks .

In the known methods of horizontal justification, there are disadvantages in the complicated technology changing the working level several times

Further disadvantages of the known procedures in the Sntscha « lung theory consist in the fact that knowledge common swangswelsen demoulding old the Keintlraente Be guided over the entire length of the concrete elements have to. There is considerable wear and tear of all shapes " of the constituent elements that at. the combined arrangement a closed mold frame with embedded core elements ensure premature wear of the entire device. »An exchange of wear parts is expensive. In addition, the head pages of the Mold manually demolded in this process, so that a New labor required and therefore none optimal economy can be achieved. Furthermore, the quality of the concrete element is from the manual skills dependent on the operator «Sine concatenation with successor

.00.8848 / 114: 3 .--.

technology is not used in any of the known processes and due to the specific construction designs expensive »

The purpose of the invention is to provide a method and a device with the help of which concrete elements, in particular Cable duct blocks, can be produced by a technologically favorable process with high economic benefit.

The invention is based on the object of a device based on the modular principle that is suitable for interlinking with known subsequent technologies suitable to create this device is to be used according to a certain process technology that is coordinated in such a way that that apart from the cable duct shapes that are preferably to be manufactured also other concrete elements by simply exchanging additional equipment taking into account favorable wear, quality and safety features can be produced.

The invention is also based on the subjective Influence of the operating personnel through a high mechanical

degree of transformation is eliminated

According to the invention, the device is modular name of the universal {Äasehioenrahmen aua profile steels, which is clad on all sides for safety reasons and di @ Auflast, the mold frame, the concrete

- 6 009848/1143

on donors and feeders'. From the machine frame The board infeed, the turning and pulling device of the cavity-forming element and the plastering table are separated arranged «The control and the drive of all movement curtains on the door direction is carried out by an electrohydraulic. lical principle with fully automatic process "

According to the invention, the interaction of the individual results Assemblies as follows: "

After the hydraulic system has been put into operation, the preform feed is actuated and the preforms are moved into the working position on the shaker table.The control for lowering the mold frame is triggered by actuating the directional control valve for the corresponding working cylinder through an end switch contact. At the same time, the backward movement de :? Form document feeder triggered. When the lowered mold frame reaches the working position, a limit switch contact closes the directional control valve for the working cylinder of the mold frame »At the same time, the limit switch contact opens the directional control valve of the working cylinder for inserting the mold head parts. File, the centering pins are also brought into working position « ^! During the initial commissioning of the foiling documents, the cell wheel of the concrete feeder was set in motion and at the same time. thus the lat feeder is forcibly filled

* The drive of the cell wheel is controlled via a time relay

■ f '{

. controls, bainite an overflow of the Kaattnbtechicktr ·

ORIGINAL INSPECTED

Avoided "the settling of the form in connection with the Switching off the time relay causes the box feeder to start up, which is now the five-sided closed > ¥ orm in two horizontal directions by a working cylinder actuated, passed over once and the mold is filled with approx · V3 of its volume · The pre-filling depends on the Consistency and the grain separation switches on the vibrator for pre-compaction. The compaction time is controlled by a time relay and can The vibrator can optionally be stored in such a way that the vibrations are absorbed both vertically and horizontally Table and thus entered into the concrete element «At The shaker is switched off via a time relay, the gear motor, which is the turning and pulling device, is triggered brings the cavity-forming element into working position. The retraction of the cavity-forming elements results in an additional compression of the pre-filled and pre-compressed · th material by pressing action. Shortly before the working position is reached, the turning and pulling device engages Limit switch contact triggered, the feed of the box feeder rs in operation «The filling of the mold frame is therefore in mutual relationship with that belonging to the mold Elements of the turning and pulling device · After the box feeder due to the controlled dependence on the turning and pulling device was stopped, is durcli load the same as the contact-releasing limit switch the solenoid valve of the working cylinder for lowering the load

• - 8th -

009841 / 1U3

ORIGINAL IMSPECTED

makes, shortly before reaching the working position of the load if the vibrator is loaded again via a limit switch contact

and the element is completely compacted under load. The; -upload drops during the shaking movement to the specified height of the element. This provides the contact point for switching off the lowering movement of the load · A limit switch contact opens the solenoid valve for the working cylinder of the mold frame. The lifting of the molded parts delimiting the long sides of the concrete element takes place under the load on the concrete element.Simultaneously with the lifting of the mold, the rotary movement of the cavity-forming elements is triggered and, after about 2 seconds of persistence, the rotating and pulling device extends the same from the freshly formed concrete element. Only after completion of this process does the limit switch control open the solenoid valve for the working cylinder of the load. After the end of the lifting movement of the load, the mold head parts are demoulded in such a way that first the centering pins are pulled over 50 mm and then the vertical mold head parts ^ follow Working table brought so that the next concrete element can be manufactured using the same sequence principle. By shifting the molding base, the molding base covered with the concrete element is forced out of the machine and transferred to the next interlinking unit.

- 9 -. 009848/1143

The invention is to be used below in an exemplary embodiment are explained in the accompanying drawing »specially.

Fig. 1: the front view,

Pig · 2: the top view of Pig · 1 and 3 »

Pig, 3 * a side view after Pig * 1 »

Fig, 4-1 section according to Fig ^ 3,

Pigf 5 ^! Detail X after Pig, 3,

Pig 6: section according to Fig. 5,

Pig ·? Ϊ Timing scheme ..

After the electrohydraulic control system 1 by switching on the pump has been put into operation, the Blank document feed?., Which essentially consists of two parallel pipe supports with traverse 3, actuated by a working cylinder 4- and the molding pad 51 which is at the bottom of magazine 6, in readiness * - ment and with a repeated feed through the next following Pormlingsunterlagen 5 in working position on the Vibrating table 7 brought. When the electrohydraulic is switched on Control system 1 is forced to trigger the control for lowering the mold frame 8. Lowering as well the later lifting of the mold frame 8 is carried out by two working cylinders 9 made. The backward movement is compulsory of the molding underlaying 2 durcli reversible working of the working cylinder A · Simultaneously with actuation of the molding under Xagenvorsc hübe 2, the Dosing device, a cellular wheel 10 of the concrete feeder 11 set in rotation and thus the box container 12 with it

- 10 009848/1143

ν · BAD ORIGINAL.

^ fffimmtenMange concrete is filled, an exact dosage is obtained for a time relay _o When the? orm · - rahpeii § reaches its working position, the coii ^ fftten molded head parts 14 "consisting of vertical st ^ eiideii ijlasken 15, the are displaced in a plate with inserted centering pins 16, brought into working position. The mold frame 8 is closed on five sides and filling with concrete by the box feeder 12 is possible after the time relay has been switched off. The filling takes place in such a way that the box feeder 12 sweeps over the mold frame 6, which is closed on five sides, in the horizontal direction and the mold frame 8 fcit "approx" Hy of its volume wirdc prefilled the movement of the iCastenbefchickers 12 wiro lurch a working cylinder 26, the counter _y operates brought "the operation of the working cylinder 26 via a directional control valve · in this case, in a parallel guidance of the Zastenbeschicker 12 positively driven by gears 27 and toothed racks 28 ', depending on the After pre-filling, the vibrator 17 of the vibrating table 7 is switched on for the pre-compaction Eh- and pulling device 18, which consists of the rotatably mounted cavity-forming elements 19 and the associated group drive 20, the guide 21, its drive 22 and the transmission mechanism 23, brought into working position ο When the hollow space elements 19 are inserted into the mold frame 8 is there an

'- 11 -

00984B / 1U3 1

BADORlQINAt. '

AO

sows compaction by pressing on the basis of the special Shape of the cavity-forming elements 19 · After the rotating and pulling device 18 with its cavity-forming Elements 19 has reached their working position, iat the condition for a new drive on the Pormrahmens 8 with the Box feeder 12 given «, the remaining filling of the Pormrahmens 8 takes place, the box feeder 12 goes into Befttlletellung under the concrete exercise 11 »On reaching this final position there is a compulsory lowering of the load 24, which by means of two guide pistons 29 prevents the load 24 from tilting through a working cylinder 25. The lowering Load 24, which brings about an increase in the compression effect and at the same time the mold frame 8 on the sixth Side closes and thus also the shape of the concrete element * tes tolerated in height, actuated via a limit switch contact the vibrator 1? ernaut, and the concrete element is ready shaped and compacted. Has the load 24 the set Reached the height of the concrete element, dig. Interruption of the shaking process »Inevitably, the shutdown of the vibrator 17, the directional control valve for the working cylinder 9 of the mold frame 8 is opened and the mold frame 8 is opened at stopping:? Load 24 lifted into its starting position. With the beginning of the excavation of the mold frame 8, the hollow-roughening concrete elements 19 are set in rotation, and After a delay, the turning and pulling device is brought into its starting position by actuating the drive 22. Ubea? When the limit switch is activated, the directional control valve opens for the working cylinder 25, -der the load 24 in their

- 12 -0Q9848 / 1U3

Guide piston 29 close. moved above and the same in his Starting position brings. The load 24 drives against one, Limit switch that controls the directional control valve for the working cylinder 13 operated, which solve the complete Fonnkopffteile 14 so that da2 first the centering pins 16 stored in a plate from the concrete element; are drawn and then the perpendicular standing porine head parts 14 are separated from the concrete element « Because the Zßntrierstifte 16 first from the freshly formed Concrete element are pulled and then only the vertical Ponskopffteile 14 are solved, is a Crack formation on the head part of the concrete element avoided · This is the demolding process of the concrete elements is completed, the same is exposed on the molded base 5 · Di · in the starting position brought upright mold head parts actuate the directional control valve for the working cylinder 4, the feed of the over the parallel pipe support with traverse 3 Forming pads 2 causes and bringing the ready-made molding pad 5 into working position · That happens so that the new molding pad 5 on the Rütteltiεi'a 7 Lying molding underlay 5 with the freshly techalten Concrete element pushed down from the vibrating table 7 and the next Interlinking unit transfers “At the same time, the Next molding documents 5 in readiness. With the deployment the preform 5 begins in the working position the automatic sequence of the machine as described.

009848/1143

Claims (9)

Patent claims: φ) Method and device for the production of concrete elements, preferably molded cable duct blocks, characterized in that the horizontal production of the concrete element is carried out in a molded frame (8), which is closed on all sides by machine and with embedded cavity-forming elements (19), in such a way that the molded frame (8) which is initially closed on five sides pre-filled, pre-compressed with a vertically or horizontally acting vibrator (1?), then the cavity-forming elements (19) retracted, the five-sided closed mold frame (8) is completely filled and completely compressed under load, so that the shape is formed by the six-sided closed mold frame (8 ) is guaranteed. 2. The method according to claim 1, characterized in that the process of shaping is fully automatic according to the cycle sequence scheme Fig, 7 takes place * 3 · The method according to claim 1, characterized in that 4 - when retracting the cavity-forming elements (19) an additional compression takes place by pressing action « 4. - The method according to claim 1, characterized in that in the manufacture of cable duct blocks, the device is provided with known interlinking elements can be, in particular that the extension of the Formliirr - 14 009848/1143 support (5) via a V-belt conveyor into a stacking device takes place ι which is a stack of several Concrete elements with and without molded underlay (5) permitted * 5. The method according to claim 1, characterized in that simultaneously with the lifting of the mold frame (8) the rotation of the cavity-forming elements (19) is carried out under load (24) "whereby a smoothing of the cavity walls and side parts of the concrete element is brought about " " 6. The method according to claim 1, characterized in that the centrifuge pins (16) pulled out of the concrete element before the vertical shaped head parts (1%) can be deducted 7. Device for performing the method according to Claim 1, characterized in that the vibrating table λ (7) with the vibrator (17) is set up vibration-dampening independently of the machine frame (30) made of profile steel, without any adverse effect on the compression, 8. Apparatus for performing the method according to claim 1, characterized in that the assemblies, '' which close the mold frame (8) on six sides, vibration? - -15- 009848/1143 -Vf- be stored in a damping manner and the vibration frequencies with it cannot be transferred directly to the machine frame (30) » 9. Apparatus for performing the method according to claim 1 »characterized» that the mold frame (8) with the two long side parts (31) as well as the necessary separators (32) for one-, two- and three-compartment units Elements can be raised and lowered and through its construction allows the same through the mold head parts (14) with the centering pins (16) and the cavity-forming elements (19) in the horizontal direction the mold frame (8) for.fseiten closes. 10 »Device for carrying out the method according to claim 1, characterized in that the two standing vertically Mold head parts (14) displaceable in the horizontal direction are arranged and operated hydraulically 11 _β device for carrying out the method according to claim 1, characterized in that the centering pins (16) are fastened to a plate (33) which is fastened to two working cylinders (13) in a vibration-damping manner and which at the same time hold the vertical mold head parts (14) in picks up and allows the centering pins (16) to move 50 mm in the horizontal direction before the mold head parts (14) separate from the concrete element * - 16 - 009848/1143