EP0365508A2 - Verfahren und Vorrichtung zum Reinigen von Schalungsträgern - Google Patents

Verfahren und Vorrichtung zum Reinigen von Schalungsträgern Download PDF

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Publication number
EP0365508A2
EP0365508A2 EP89850356A EP89850356A EP0365508A2 EP 0365508 A2 EP0365508 A2 EP 0365508A2 EP 89850356 A EP89850356 A EP 89850356A EP 89850356 A EP89850356 A EP 89850356A EP 0365508 A2 EP0365508 A2 EP 0365508A2
Authority
EP
European Patent Office
Prior art keywords
shuttering
joist
joists
roller conveyor
station
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP89850356A
Other languages
English (en)
French (fr)
Other versions
EP0365508A3 (de
Inventor
Tord Eriksson
Jan Thörnlund
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Adema Maskin AB
Original Assignee
Adema Maskin AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Adema Maskin AB filed Critical Adema Maskin AB
Publication of EP0365508A2 publication Critical patent/EP0365508A2/de
Publication of EP0365508A3 publication Critical patent/EP0365508A3/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G19/00—Auxiliary treatment of forms, e.g. dismantling; Cleaning devices
    • E04G19/006—Cleaning devices

Definitions

  • This invention relates to a machine and a system for cleaning shuttering joists of wood.
  • residual concrete, adhering to the side surfaces of a shuttering joist should be removed.
  • a common method to clean shuttering joist is to use a scraping iron or a wire brush and manually remove the concrete residuals sticking to the shuttering joists when the form has been stripped.
  • US-A-2 835 909 relates to a concrete form cleaning machine for cleaning the main surface and the edges of a concrete form of the panel type.
  • the panel is inserted vertically between two guides.
  • the panel is supported on a non-driven roller conveyor and is advanced through a cleaning station comprising stationary brushes.
  • a conveyor chain is provided on one of the guides and serves as a driving dog for the panel. Said brushes will thus clean the surface of the panel.
  • An additional rotating brush is cleaning the lower edge of the panel.
  • a drawback with this known device is that its cleaning ef­ficiency is poor.
  • FR-A-1 134 990 relates to a machine for cleaing boards and cheese cloth used in the cheese industriy.
  • the boards are advanced through the nip formed between a rotating brush and a stationary brush while at the same time the board is sprayed with a cleaning liquid housed in a container provided beneath the brushes.
  • the board is advanced by the rotating brush itself, said brush having a rotational speed much higher than the speed by which the board is advanced.
  • FR-A-2 281 475 relates to a panel cleaning machine, in par­ticular to a machine for cleaning the main surfaces of a form panel to which concrete is adhering.
  • the machine comprises a roller having longitudinal grooves extending transverse to the form panel, said grooves being pressed into the main surface of the form panel in order to crack the concrete.
  • a rotating brush also extending transverse to the form panel, will then brush away the loose residual concrete from the main surface.
  • the side edges of the form panel are scraped by scraping irons.
  • the cleaning of the main surfaces of the form panel is sufficient while the cleaning of the edges is unsufficient.
  • This known machine has been tested with shutter­ing joist of wood but the cleaning is unsufficient because the concrete residuals adhere strongly to the wood. Although the concrete is cracked the brushes do not suffice to clean the main surfaces of the form panels.
  • the object of the present invention is to provide a machine of the kind referred to above which is simple to operate, easy to move from working site to working site, which will clean form boards and shuttering joist of wood efficiently using a dry method of cleaning. In accordance with the inven­tion this is achieved by grinding preferably milling the form board/shuttering joist using a dry method of cleaning.
  • the wooden material should be damaged only to the extent which is necessary to sufficiently remove concrete residuals.
  • the machine is adjustable for treating form boards/shuttering joist of different widths.
  • the cleaning station is pivotally arranged in relation to the roller conveyor, on which the shuttering joists are advanced, in order to closely follow the opposite side surfaces of a shuttering joist should the longitudinal axis thereof rather than being a straight line be a curved lined.
  • the invention also relates to a system for cleaning form boards or shuttering joist of wood.
  • Shuttering joist with concrete residuals adhering thereto arrive in a disordered state, for example lying on the flat bed of a lorry, to the site of the system.
  • the system shall also load test each shuttering joist, print a mark, for example a company's name, on each shuttering joist, stain each shuttering joist and order the shuttering joist so treated into strapped bundles or packages which are easy to handle.
  • the system shall rationalize the handling of the shuttering joists and it shall clean a large number of joists in short time using only two operators maximally, one operator inserting the sputtering joists into the input end of the system and the other taking care of the strapped bundles of joists at the output end of the system, using for example a fork-lift truck.
  • FIG. 1 there is shown a shuttering joist 1 also referred to as a form beam, with I-shaped cross-section.
  • a shuttering joist 1 also referred to as a form beam, with I-shaped cross-section.
  • concrete residuals 2 are adhearing to the joist. Said residuals 2 must be removed to permit reuse of the shuttering joist in a new form.
  • the machine by which the residuals are removed comprises an elongate support structure 3 with legs 4.
  • a series of rollers 7 are rotably mounted so as to form a roller conveyor on which shuttering joists are advanced through a first driving station 8, a cleaning station 9 and a second driving station 10 in the indicated order.
  • Electric and pneu­matic control equipment for the operation of the machine are mounted within a control cabinet 11. Control signals to the eletric and pneumatic control equipment in the control cabinet are provided from sensors to described further below.
  • FIG. 2 the cleaning station is shown.
  • This cleaning station comprises two electrical motors 12, 13 on the output shafts of which cylinders 14 and 15 respectively are mounted.
  • the surface of each cylinder is hard and structured and is so designed that upon contact with the side surface of a shutter­ing joist concrete residuals 2 adhering thereto will be removed by grinding.
  • the surface of the cylinder is of hard metal and has been machined so as to form rows of pyramid shaped projections extending around the periphery of the cylinder.
  • the motors will rotate the cylinders at a high rotational speed.
  • the peripheral speed of the cylinders is considerably higher than the speed at which a shuttering joist is advanced on the roller conveyor. Since concrete comprises gravel and sand the cylinder surface will be exposed to great wear.
  • Each electric motor is mounted at one end of a respective arm 16 and 17, the opposite end of each of said arms being pivotally supported on a common vertical pivot pin 18.
  • the pivot pin 18 is stationary mounted on a transverse bar 19 extending between the side members 5 and 6 of the support structure.
  • the unit formed by the arms and motors is suspended in the pivot pin 18 around which the unit may swing in order to follow the side surfaces of the shuttering joist should the latter be askew.
  • a releasable bias means 20 in the form of a pneumatic cylinder extends between the free end of the two arms. When the bias means 20 is in its unreleased state the distance between the two arms and therefore also between the two cylinder surfaces is somewhat larger than the width of a shuttering joist.
  • the bias means 20 When the bias means is relased by a limit sensor to be described further below the bias means 20 will force the cylinders 14, 15 towards each other and into contact with the opposite side surfaces of the shuttering joist. In order to prevent that no more wood is removed than what is required to remove the concrete residuals 2, stopping means 21 are provided that restrict the minimum distance between the cylinders and therefore also the maximum wood removal of the cylinders.
  • said stopping means comprises a sleeve 22 pivotally mounted at the end of the arm 16 opposite to the pivot pin 18 as well as the threaded rod 23 which also is pivotally mounted at arm 17.
  • the threaded rod 23 has at one end thereof a transverse pin 24 extending between oblong openings 25 provided in the wall of the sleeve 22 at diametri­cally opposite sites.
  • a mounting member 23A which is threaded on the rod 23 and which is rotably journalled at arm 17.
  • the mounting member 23A is used for setting the minimum distance between the cylinders.
  • Driving station 8 is advancing the shuttering joist on the roller conveyor at the input end of the conveyor and driving station 10 is advancing the shuttering joist at the output end of the roller conveyor.
  • the driving station 8 is shown in detail. It comprises a stationary lower plate 26 suspended between the side members 5, 6 of the support structure 3. A plate 27 is pivotally mounted on the stationary plate 26 in pivot means 28, 29. At a certain distance above the surface of the pivoted plate a driven roller 30 is mounted. One end of the driven roller is journalled in a mounting bracket 31 and the other end of the roller is journalled in the housing of a gear box 32 the input and output shafts of which are perpendicular. An electric motor 33 is mounted in the gear box 32 in a cantilever manner. The gear box 32 is supported on the pivoted plate 27 by means of a cubical support member 34.
  • a piston and cylinder unit 35 holds the pivoted plate 27 and the unit, formed by members 30-34, sitting thereon in a normal rised position in which the lower surface of the driven roller 30 is sitting 2-3 centimetres above the upper surface of the shuttering joist as is shown in Figure 6.
  • the piston and cylinder unit 35 is of pneumatic type and is attached to the stationary plate 26.
  • a piston 36 extends through an opening in the stationary plate 26 and is at its upper end attached to the pivoted plate 27 as is schematically shown at nut 37 in Figure 4.
  • the piston and cylinder unit 35 When the piston and cylinder unit 35 is activated by a limit sensor to be described further below the piston and cylinder unit will swing the pivoted plate 27 in the anti-clockwise direction in Figure 4 from its rised position to a position in which the lower portion of the driven roller 30 engeages the upper surface of the shuttering joist. Simultaneously therewith the electric motor 33 is energized and the shuttering joist will now be advanced on the roller conveyor formed by rollers 7.
  • the height of the stationary plate 26 may be set in relation to the support structure 3 with the aid of threaded rods 38 provided in the four corners of the lower plate 26 said rods cooperating with locking nuts 39 provided at the side members 5 and 6 respectively of the support structure.
  • each guide member 40 is mounted on a vertical column 41 which is attached to a transverse bar 42 extending between the side members 5, 6 of the support structure.
  • a similar limit sensor is also provided downstream the driving station 10 in order to active the motor and piston and cylinder unit associated with the driving station 10 although said latter limit sensor is not shown in the drawings.
  • Each limit sensor 43, 44 comprises a switch which is operated by a piece of stiff metal wire 45 and 46 respectively, each said piece of stiff metal wire projecting into the path of a shuttering joist. When the transverse edge of the front surface of a shuttering joist hits the wire the latter is bent and will now operate its associated switch.
  • the piece of metal wire 45 and 46 respectively returns to its upright position by spring action.
  • the piece of stiff metal wire 45 When the piece of stiff metal wire 45 is bent it will operate its associated switch and now the biasing means 20 will open the arms 16, 17 and stop the motors 12, 13.
  • the metal wire 46 operates its associated switch and this will swing the pivoted plate 27 in an upward direction and stop the motor 33.
  • Each switch is connected to the control equipment, the electrical as well as the pneumatical, with electrical conductors.
  • the limit sensor 43 is attached to one of the arms 16 or 17 while the limit sensor 46 is attached to a transverse bar, not shown, extending between the side members 5, 6 of the support struc­ture.
  • the above described embodiment can be modified and varied in many ways.
  • the surfaces of the cylinders 14, 15 may for example have different configurations than the one described.
  • each surface may be smooth and have a grinding band fitted thereon.
  • the grinding band comprises particles of carborundum adhering to a base of paper, paper coated web of plastic, fibres or any other base material.
  • the guide members 40 are replaced with guiding means between which the longitudinal side surfaces of the boards are guided.
  • the stopping means 21 can have other designs than that shown. Beams and boards of different widths can be cleaned by reset­ting/changing the guiding members and by resetting the stopping means.
  • the various piston and cylinder units may be of hydrau­lic type or may be electrically driven.
  • FIG 7 the system in accordance with the invention is shown in a perspective view as seen from above.
  • a shuttering joist support plate 50 on which a shuttering joist is manually placed and is aligned with the roller conveyor of the machine in accordance with the invention.
  • First the shuttering joist will pass a printing station 51 before it enters a modified machine in accordance with the invention.
  • the machine is housed in a protective casing 52 within which a load testing station and the previously described cleaning station are housed. After leaving the cleaning station the shuttering joist enters a staining station which also is covered by a protective casing 53.
  • a shuttering joist collecting unit comprising a frame 54 supporting a first transfer station 55 at which the shuttering joists are transferred from the roller conveyor to a collecting table 56 on which a predetermined number of joists are col­lected side by side to form an ordered group of joists.
  • a second transfer station 57 transfers the group of ordered shuttering joists from the collecting table 56 to a lifting table 58.
  • Each transfer of a group of joists is followed by a lowering of the lifting table for a predetermined distance thus preparing the lifting table to receive the next group of joists on the top of the previous group.
  • the lifting table 58 has been filled with a predetermined number of group of joists the stack of shuttering joist groups is tied with straps and is then ready for removal, for example with the aid of a fork-lift truck.
  • the shuttering joist support plate 50 comprises a horizontal turning plate 60 supported at the end surface of a vertically extending piston and cylinder unit 61 by which the height of the turning plate is set.
  • the shuttering joist support plate is aligned with the longitudinal axis of the roller conveyor.
  • the operator of the machine puts the forward end portion of a joist on the support plate 50 and then he lifts the rear end of the joist, turns the joist on the support plate until the joist is aligned with the roller conveyor. Finally he pushes the joist onto the roller coveyor.
  • the roller conveyer is driven.
  • Said printing station 51 is also provided at the input end of the system.
  • the printing station comprises a printing roller 62 around the periphery of which there is embossed a company's name for example.
  • a paint transfer roll is inking the printer roller.
  • the printing roller Under control from the control equipment in the control cabinet the printing roller is pressed into engagement with the web portion of a shuttering joist passing the station.
  • the printing roller is brought into contact with the shuttering joist for a time that corresponds to the time it takes the printing roller to do one revolution.
  • the roller conveyor has a slot 63, defined by rollers 7-1 and 7-2, as seen in Figure 8.
  • the driving station 8 is situated approximately midway between the rollers 7-1, 7-2.
  • the pneumatical piston and cylinder unit 35 will press the driving station 8 in a downward direction with a predetermined force.
  • the driven roller 30 will thus subject the joist section between rollers 7-1 and 7-2 for a predetermined load and at the same time the driven roller 30 starts to rotate thus advancing the shuttering joist along the roller conveyor. In this way the shuttering joist will be subjected to a progressive load testing when passing the load testing station.
  • a number of spray nozzles are arranged within the protective casing 53 in order to spray stain on all surfaces of the shuttering joist.
  • the stain is applicated in a thin layer which is soaked by the wood. Almost no stain will take on the downstream machinery.
  • roller conveyor extends all the way under the frame 54. At the end of the roller conveyor there is an optic limit sensor 65.
  • the frame 54 has two upper beams 66, 67 extending transversly to the roller conveyor. At the underside of each beam a rodless piston and cylinder unit 68 and 69 respectively is mounted. Rodless piston cylinder units are known and are used to generate linear motion. They are either pneumatic or electric.
  • a joist pusher 70 secured in each piston 68, 69 extends parallel to the roller conveyor.
  • the joist pusher 70 comprises a beam having a number of joist pusher plates 71 hinged thereto, said plates depending from the beam and being adapted to engage the right side surface of a shuttering joist using the directions of Figure 10.
  • the joist pusher 70 is movable between a start position in which it is situated to the right of the right side surface of a shuttering joist advanced on the roller conveyor and an end or delivery position in which the joist pusher is situated some distance above the collecting table 56, inward thereof, approximately at the site of arrow 72 where the joist pusher delivers the joist.
  • the pusher plates 71 are hinged to the beam to cope the situation which arises when a new joist is advancing on the roller conveyor while simultaneously the joist pusher is returning from the delivery position to the start position. When this situation occurs the pusher plates will swing in the clockwise direction when hitting the left side surface of the advancing joist.
  • a stationary joist stopping device 73 is arranged at the left part of the collecting table 56, said joist stopping device being mounted in the frame and comprising a long rod or beam.
  • a movable joist stopping device 74 comprises a pivoted rod or beam extending along the table and being attached to a number of vertically projecting columns 75 provided along the pivoted rod.
  • Each column 75 is provided with a pivot pin 76 around which a pivot plate 77 is mounted.
  • the movable joist stopping device is welded to the pivot plates 77 in the manner shown in Figure 11. At the opposite end of the pivot plate one end of a piston and cylinder unit 78 is mounted.
  • the first transfer station 55 is controlled by control equip­ment in the control cabinet 11 and is operated in the following manner: When the forward end of a joist advancing on the roller conveyor is detected by the optic limit sensor 65 the cylinders 68, 69 are simultaneously operated and will move the joist pusher 70 from its start position to its delivery position. During this movement the joist pusher is pushing the joist. The joist is delivered at a position inward the table and finally the joist pusher returns to its start position, waits for a new signal from the optic beam sensor 65, is again activated and starts to transfer the next joist, said next joist then pushing the previous joist to the left.
  • the first transfer station operates in the following manner: When the movable joist stopping device is in its inactive raised position the left side of the leftmost joist on the collecting table will contact the stationary joist stopping device 63 as the joist pusher 70 delivers the fifth joist. If the movable joist stopping device is in its active low position shown with broken lines in Figure 11 the left side of the leftmost joist on the collecting table will contact the movable joist stopping device 74 when the joist pusher 70 delivers the fourth joist. It is also appreciated that the position of this leftmost joist is displaced in relation to the position of the leftmost joist of the previous group of five joists.
  • the second transfer station 57 comprises two beams 81, 82 welded to the frame 44 parallel to each other and to the roller conveyor. At the underside of each beam 81, 82 a rodless, linear motion generating piston and cylinder unit 83 and 84 respectively is mounted.
  • a movable joist group pusher 85 comprising a frame structure, a pusher beam and a pair of wheels 86, is attached to the piston of each piston and cylinder unit 83, 84 and is movable between a start position, in which the joist group pusher is at a distance behind, using the directions of Figure 10, the table and a delivery position somewhat ahead of the front surfaces of the joists of a group of joists laying on the table.
  • the movable joist group pusher 85 is activated by control equipment within the control cabinet 11.
  • the joist group pusher 85 is activated when five joists are laying on the collecting table, the movable joist stopping device 74 is in its inactive raised position and the leftmost joist a group of joists is in contact with the stationary joist stopping device 73 and also in the case when four joists are laying on the collecting table and the movable joist stopping device 74 is in its active low position.
  • the lifting table is lowered by an amount allowing the following group of joists to be placed over the previous.
  • the control equipment will allow fifty joists, arranged in the manner shown in Figure 12, to lay on the lifting table 58 in a position ready to be tied up in a bundle. By arranging one group of joists displaced in relation to the next, the volume of the joist bundle is reduced. It is apparent that the piston and cylinder units 78 of the movable joist stopping device 74 are controlled by the control equipment in the control cabinet 11 in such a manner that each second group of joists on the table is displaced in relation to the previous one.
  • the movable joist stopping device 74 may be omitted.
  • the movable joist group pusher can be activated when other numbers of joists than those referred to above are laying on the collecting table.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning In General (AREA)
EP19890850356 1988-10-18 1989-10-18 Verfahren und Vorrichtung zum Reinigen von Schalungsträgern Withdrawn EP0365508A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8803717 1988-10-18
SE8803717A SE468774B (sv) 1988-10-18 1988-10-18 Balkslip

Publications (2)

Publication Number Publication Date
EP0365508A2 true EP0365508A2 (de) 1990-04-25
EP0365508A3 EP0365508A3 (de) 1990-11-22

Family

ID=20373671

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890850356 Withdrawn EP0365508A3 (de) 1988-10-18 1989-10-18 Verfahren und Vorrichtung zum Reinigen von Schalungsträgern

Country Status (3)

Country Link
EP (1) EP0365508A3 (de)
NO (1) NO894142L (de)
SE (1) SE468774B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2985754A1 (fr) * 2012-01-17 2013-07-19 Cofframat Dispositif pour la revision de poutrelles de coffrage
CN105888246A (zh) * 2016-04-14 2016-08-24 江苏万象建工集团有限公司 建筑模板表面除杂清洗方法
CN113309350A (zh) * 2021-05-26 2021-08-27 桐玉建设集团有限公司 一种建筑工程用模板清理装置及其清理方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109047130A (zh) * 2018-09-07 2018-12-21 广州景兴建筑科技有限公司 一种新型建材模板清洗装置
CN115446968B (zh) * 2022-09-01 2025-09-19 江苏科技大学 一种玻镁平板模板料渣去除装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR510795A (fr) * 1920-02-27 1920-12-10 Peter Sauset Machine pour débarrasser les planches de coffrage de ciment adhérent
FR1052484A (fr) * 1952-03-15 1954-01-25 Frankignoul Pieux Armes Appareil à nettoyer les bois de coffrage et analogues
FR1083034A (fr) * 1953-04-10 1955-01-04 Procédé pour remettre en ordre de service des planches de coffrage utilisées à des constructions en béton, et dispositif pour l'exécution de ce procédé
FR1131950A (fr) * 1955-04-15 1957-03-01 Semay & Gauge Ets Machine pour le nettoyage des planches et analogues
AU473885B2 (en) * 1972-10-05 1975-04-10 Ddcbro Pty. Limited Panel cleaning machine
FR2206773A5 (de) * 1972-11-16 1974-06-07 Trigano Cie
DE2346990A1 (de) * 1973-09-18 1975-04-03 Diebau Eugen Dietrich Schalbrettreiniger mit beweglichen reinigungswerkzeugen
IT1051209B (it) * 1974-05-09 1981-04-21 Rapetti G E C S A S Macchina pulitrice automatica di tavolame per l edilizia

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2985754A1 (fr) * 2012-01-17 2013-07-19 Cofframat Dispositif pour la revision de poutrelles de coffrage
CN105888246A (zh) * 2016-04-14 2016-08-24 江苏万象建工集团有限公司 建筑模板表面除杂清洗方法
CN105888246B (zh) * 2016-04-14 2017-10-24 江苏万象建工集团有限公司 建筑模板表面除杂清洗方法
CN113309350A (zh) * 2021-05-26 2021-08-27 桐玉建设集团有限公司 一种建筑工程用模板清理装置及其清理方法
CN113309350B (zh) * 2021-05-26 2022-09-09 桐玉建设集团有限公司 一种建筑工程用模板清理装置及其清理方法

Also Published As

Publication number Publication date
SE8803717D0 (sv) 1988-10-18
SE8803717L (sv) 1990-04-19
NO894142D0 (no) 1989-10-17
EP0365508A3 (de) 1990-11-22
SE468774B (sv) 1993-03-15
NO894142L (no) 1990-04-19

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