DE3314148A1 - Machine for cleaning shuttering boards for shuttering and boards in general for use in building - Google Patents

Abstract

The machine for cleaning shuttering boards for shuttering and boards in general for use in building, according to the invention, comprises a fixed frame mounted on wheels, a pair of gripping rollers which are arranged vertically on a movable frame, composed of two parts, which can be moved towards or away from each other symmetrically in relation to the longitudinal axis of the machine. Each of these rollers is driven by a geared motor which is resiliently mounted on the movable frame so that it can absorb the stresses which are produced on the shafts of the rollers by the boards, which have irregular encrustations and are of varying thickness. Behind these rollers and on the same movable frame is mounted an apparatus for cleaning the lateral surfaces of the shuttering board, consisting of a plurality of scraper elements, of appropriate shapes and appropriately arranged, mounted on at least two separate round lateral bars, means being provided for regulating the angular position of the said elements. For the cleaning of the upper edge, an iron with a regulatable inclination is mounted on an L-shaped lever which has its fulcrum on the frame in its shorter side, which is connected to one end of a spring, the other end of the said spring being fixed to the rear part of the machine.

Description

.:. **. . "..% '.". ···: PATENTANWÄLTE

I * .. i. ". ί:> :., ". "*. '" GRÜNECKER - DR. KINKELDEY - DR.STGCKMAIR

.!. .. * * · "" "·" * · "· - DR. SCHUMANN'JAKOB-DR, BEZOLD MASTER

HILGERS DR. MEYER-PLATH MAXIMILIANSTR. 5a 8000 MUNICH

DESCRIPTION MUiTG 3 ⁴ S 1 A 1 Λ ft

"PURE MACHINE CLEANING * FOR SWITCHBOARDS AND BBETTEHM IN GENERAL FOR USE IN CONSTRUCTION ".

DESCRIPTION

The present invention relates to a machine for cleaning shuttering boards for formwork and boards generally for use in construction. As is known, the boards need to be used for manufacture the formwork, in which the concrete dumps for reinforced concrete structures are made, are used to be reused to be able to, from the cement crusts that are inevitable form on their surfaces, are cleaned. More generally, all boards that are used in construction can be subjected to such a cleaning operation as always residual incrustations may be present. To do the cleaning of these boards are machines which consist of a solid frame "in which a pair of rollers are morfciert that rotate, with vertical Axles driven by a chain transmission from a single gear motor and the opposite rotation to have.

As they rotate, the rollers pull the board to be cleaned inside the machine, where the scraper is provided that are able to clean the sides as well as the top and bottom edges of the board. More accurate, scrapers in the form of a comb with independent and flexible teeth are provided for cleaning the side walls, so that if there is a Uggel or something similar in the board is located, the iron can yield elastically and let the board pass.

For cleaning the top and bottom edges of the board, these machines are equipped with other types of scraper. More precisely, as far as the lower edge is concerned, the beam, which acts as a support and guide for the Advancement of the board inside the machine is used, equipped with a suitable knife, which is done regularly and without any Causing problems works. The cleaning of the

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upper edge poses problems of loss of balance, due to a fixed on the upper cross member of the front Machine frame firmly anchored rod, which carries a suitable scraper at its free end. To on the top In order to achieve the pressure required for correct cleaning of the edge itself, a tension spring is provided for the edge of the board zv / ischen one arm, which is firmly united with the tool stick and protrudes from the side of the same, and a suitable one Hooking part, which is level with the lower part of the fixed Machine frame lies.

One of the gripping rollers is used to enable the machine to be adapted to the thickness of the various boards inserted mounted on a frame movable in relation to the fixed machine frame, so that the distance or Approach of one roller in relation to the other is made possible.

The cleaning machines of this named iyps, how much too Widely used, but have known technical disadvantages, mainly due to the structural design the machine itself.

The fact of a fixed frame and a movable frame, on which, respectively, the two gripping rollers are mounted poses serious problems if, due to a suffered Impact of the machine, be it during transport, be it during use, the outer machine frame is deformed suffers. In this case it is clear that the gripping rollers no longer have their mutual positions and the corresponding ones Shifts to which they were subject at the moment of assembly on the machine, can comply. The structure of the movable frame is also designed so that the board to be cleaned is always asymmetrical in relation to the central longitudinal plane of the machine enters this. It is clear that over time the asymmetrical loads caused by the insertion of the board, lead to a loss of balance of the machine itself. This loss of balance The machine is reinforced by the presence of a single motor, since it has two gripping rollers at the same time must operate in such a way that they are in opposite directions

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Moving direction that the use of a difficult kinematic Transmission system requires bending and cutting stresses on all shafts involved in transmission are effective, causes. In the end, it must be noted that such a transmission system is inevitably an accurate and Requires regular maintenance, which has a negative impact on the cost of the work to be performed.

Another disadvantage is known with the machines mentioned Type connected with regard to the working system of the scraper. Because these irons are indeed subject to wear and tear and as this wear and tear is often different for the irons of the same row mounted on the same longitudinal beam are, the known technique uses an adjustment of the beam support in relation to the machine frame by a few It can be inclined in relation to its vertical axis and allows the scraping end to be back on the correct level Bringing working pressure on the surfaces of the board. At the same time, however, there is a disadvantage due to the change in inclination of these in relation to the surface itself: in practice, therefore, there is a different effect in one area of the scraping end of each element relative to the other area.

Another disadvantage makes itself felt in the scraping devices of the known type in that, as each scraping element is firmly attached (by means of bolts) to the beam support, it can slacken or break in the event that the to be cleaned Board, for some reason, needs to be reset instead of advancing in the machine. It also brings the presence the numerous fastening bolts of the scraping elements on their carrier a considerable expense and expenditure of time during the assembly and replacement of the scraper on the machine. Ultimately is the iron that cleans the upper edge of the board is usually mounted on the end of a rod that is necessary to keep the Exerting pressure on the edge to be cleaned is exposed to a force (pull spring) whose line of action changes laterally displaced in relation to the axis of the rod itself results; thereby the scraper exercises one from one edge to the

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another decreasing pressure on the edge to be cleaned. Repeated use of the machine can even result in that the scraper deforms so that it only remains in contact with a lateral part of the upper edge of the board, while it protrudes in relation to the other lateral part. The purpose of the present invention is to provide a machine for the cleaning of shuttering boards and formwork for building supplies with construction · and equipment, which the above described Overcoming disadvantages in relation to the known technology and the considerable operational reliability in the service life to guarantee.

Another purpose is to have a machine that is equipped with scraping devices that allow the scraping elements to be regulated in the optimal position, and that, moreover, in the event that some of them break, they can be replaced easily and immediately. This problem and others as will become more apparent in the course of the following description become in agreement solved with the present invention by a machine consisting of a fixed frame which is mounted on two wheels is so that it can be pulled, and a pair of gripping rollers with a corrugated surface that are level with the front of the Machine mounted with axes parallel to each other and perpendicular to the ground; these rollers are driven by appropriate Motor driven means to grip the shuttering board to be cleaned, to advance it inside the machine and finally pushing it out of the rear of the machine, after a suitable system of scraping irons die Has cleaned the sides and the top and bottom edges; each of the aforementioned regions has a corrugated surface mounted on an associated part of the frame and can be pushed in and fixed in the machine frame mentioned, whereby said frame parts can be moved transversely in the direction of mutual approach and distancing in such a way that Approach and distance the rollers from one another symmetrically in relation to the central longitudinal plane of the machine, above a support beam for the shuttering boards to be cleaned are attached, centrally and perpendicular to the lower beams of the

fixed frame. The machine of the present invention also includes a plurality of independent scraper members, summarized and lined up in at least two rows, arranged laterally, one on each side of the one to be cleaned Board advancing in the machine and resting against its surface; each of the abovementioned scraping elements consists of an elastic, profiled lamella, which in its middle part between the-two ends, which are basically flat and form an angle between them with a predetermined value, have a C-shaped eye to which the two said flat ends are connected; this eye is for assembly through Pressure of the said elastic lamella on a round support rod suitable, which is joined to the machine frame has its longitudinal axis parallel to and near the surface of the board to be cleaned; every individual elastic lamella is therefore removably mounted on said round support rod and capable of its own To change the angular position in relation to the named longitudinal axis, as devices for regulating said angular position and consequently changing the pressure that exerted by said elastic lamella on the surface of the board to be cleaned are provided; the above mentioned devices for the regulation of the angular position the scraping elements consist of a rigid rod, basically parallel to the aforementioned round support rod, forwards and movable backwards in relation to said elastic blades and with adjustable inclination since they are on one Pair of threaded guides, parallel to each other, is mounted in the height of their ends.

As for the cleaning of the upper edge, the machine is equipped with a scraper that is mounted on the open longer end of a lever, in L-shape and arranged above said longitudinal beam and parallel to the same, with its fixed pivot point in the machine frame at the level of its shorter side, which is connected to one end of a tension spring which is drawn the whole length of the machine and with its other end to the rear part of the fixed frame is attached.

Me machine is ultimately equipped with at least two nozzles, The solvent is injected by a pump that draws the liquid from a container that is attached to the bottom of the machine is and also serves as a container for the excess liquid, sucks.

Thanks to the structure of the machine according to the present invention, shuttering boards and boards can generally be used in the machine itself can be introduced along its longitudinal plane of symmetry, while the scraping activity is completely more even Way on all sides of the shuttering boards, regardless of their thickness and height » Other features and advantages will appear better from the detailed description of a preferred but not exclusive one Embodiment of a machine for cleaning shuttering boards for formwork and boards in general for use in construction according to the present invention, the The following is made here, referring to the enclosed drawings, only for explanatory purposes and therefore not limiting in which:

- Figure .1 is a side schematic view of the machine according to of the present invention;

Figure 2 is a plan view of the machine like that of the previous one Figure shows;

FIG. 3 shows a section along the line II-II of FIG. 2;

FIG. 4 is a schematic plan view of the lateral scraping device the machine shows;

FIG. 5 shows a sectional view of the device along the line III-III of FIG. 4;

- Figure 6 is a schematic view of a flexible assembled Lamella shows;

FIG. 7 is a schematic side view of the device as shown in Figure 4 shows.

With reference to these figures, 1 denotes as a whole a machine for “cleaning shuttering boards. This machine consists essentially of a fixed machine frame, designated as a whole by 2 and in a conventional manner on a Pair of wheels mounted to be easily pulled onto the construction site

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To be able to do this, the machine frame 2 has between its lower longitudinal beams 4 and 5 a central longitudinal beam 6 which is provided with an extension 6a, which acts as a drawbar is used and provided with at least one transverse hole 7 for the attachment alone vehicle not shown here is.

The central longitudinal member 6 also serves as a support and guide for the introduction of a shuttering board or building board 8 into the machine, which is intended for cleaning from the incrustations. For the removal of the board 8 into the interior of the machine 1, a pair of gripping rollers 9 and 10 are provided which have a corrugated surface and the axes of which are parallel to each other and perpendicular to the ground at the level of the front of the machine itself In the present invention, the rollers 9 and 10 are mounted on an associated part 11 and 12 of a movable frame, designated as a whole by 13 (Figure 2), "never parts 11 and 12 of the movable frame 13 can be symmetrical in the direction of mutual approach and Each of the parts 11 and 12 is composed of a stand 14, 15 (Figure 2 and Figure 3) and two pairs of supports 17 and 17, fastened at right angles to the respective uprights and with appropriately perforated pegs I6a ~ and 17A ^equipped.! n each dJecier pins sits a bearing 18 is provided in order to endure radial loads. The Imaging Logo For the sake of simplicity, only the bearing with respect to the journal 16a of the carrier 16 is shown in FIG.

The shafts 19 are located inside the above-mentioned bearings 18 and 20 their seat on which the gripping rollers 9 and 10 are mounted. In accordance with another property of the present In accordance with the invention, each of the shafts 19 and 20 is kinematically connected to an associated gear motor 21 and 22, elastic by bolts 23 in cooperation with equiaxed celebrations 24 on parts 11 and 12 of the movable frame attached. In this way, if, as a result of the introduction of the board 8 between the gripping rollers 9 and 10, the Axes of the latter according to a certain deformation

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direct, the geared motors 21 and 22 elastically follow the course of such a deformation, without reactions in the opposite direction Direction to cause which with the continuous use of the machine to damage to the shafts 19 and 20 of the gripping whale Ken 9 and 10 would result.

In order to allow the rollers 9 and 10 to approach and separate them from one another in a symmetrical manner, the uprights 14 at 15 at the level of their ends are equipped with associated through holes, indicated in FIG. 3 with reference to the numbers 25 to 28. For the simplicity of the construction, instead of a thread, cut into the above-mentioned holes, threaded parts are welded on at the level of their ends, for example nuts, indicated with reference to numbers 25a and 28a. In the holes 27 and 28 of the stand 15, two associated threaded rods 30 and 31 act, while in the holes 25 and 26 of the stand 14 two corresponding threaded rods 32 and 33 act, the thread of which, as well as that of the associated nuts 25a and 26a, of opposite direction in relation to the thread of the threaded rods 30 and 31 must be. By means of two connecting sleeves 34 and 35, the rod 30 and the rod 32 are firmly connected to one another and, accordingly, the rod 31 to the rod 33.

To enable the movement of the approach and the distancing of the parts 11 and 12 of the movable frame 13, the Threaded rod 31 is provided at its free end with a motion flywheel 36, while an intermediate part Gear 37 is mortised. A transmission chain 38 is engaged on the gearwheel 37, which is connected to a corresponding gearwheel 39, arranged on the threaded rod 30, finds its back gear. Thanks to this arrangement and the fact that the thread the opposite rods are in the opposite direction, it is possible to operate the motion flywheel, a calibrated one Approach and distancing the gripping rollers 9 and 10 to achieve the relevant intermediate axis to the thickness of the to adapt the board to be cleaned without affecting the parallelism of their axes.

The attachment of the movable frame 13 to the fixed machine frame 2 is reached by four small blocks, indicated

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with 40, which are screwed on one side to the carrier 41 in which the above-mentioned threaded rods are tangled and welded on the side to the lower beams 4 and 5 and the upper 42 and 43 of the fixed machine frame 2 will.

The above-mentioned swivel attachment system of the movable part 13 of the machine to the fixed part 2 allows a considerable constructive advantage: working so, in fact, can all assembly and adjustment work of the movable part is carried out on the workbench, consequently a noteworthy one Maintaining precision while the construction of the iron framework of the fixed part 2 can be carried out separately. As previously mentioned, the interior of the machine is constructed so that all sides of the board 8 that is inserted into the machine 1 are inserted will be cleaned. More precisely, a scraper 45 (Figure 1) is provided for cleaning the lower edge, attached to the central support 6 and intended for the scraping of the lower edge 8b of the board 8.

In accordance with another property of the present "In the invention, on the other hand, the scraping of the upper edge 8c of the board 8 is carried out by a scraper 46, installed is designated at the free end 47a of the longer side 47 of a lever in L-shape and overall with 48 (Figure 1). The lever 48 is arranged above the longitudinal beam 6 so that it is on the same plane with this and its pivot point, in the shorter side 49, firmly connected to the fixed machine frame 2 on a pin 50. At the end 49a of the shorter side 49 of the lever 48, the end 51a of a tension spring 51 is attached, the other end 51b of which is attached the rear part of the fixed machine frame 2 is anchored.

This arrangement allows the handle 48 to always be on the same level To keep level with the central longitudinal plane of the machine, so that when the board 8 to be cleaned is introduced, the scraper 46 apply even and constant pressure along the entire surface of the upper side 8c of the board 8 can and this also with a change in the thickness 8c of the boards to be processed. With the purpose of

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ting of the iron to improve depending on the height of the board is e: possible inclination, other than that of the finding of the two Bolts 52 and 53 specific, provided. This is achieved by removing the bolt 53, the iron 46 around the loosened one Bolt 5? rotates until the iron itself strikes a fixed stop located on the end part 47a. To clean the side surfaces of the shuttering board In accordance with the present invention, the machine provides one scraper, the four Rows of scraping members includes two and two on opposite side surfaces of one to be cleaned Arranged board.

With reference to Figure 4, on the horizontal beams 16 and 17, at right angles to these, vertical round beam rods 55, e.g. by welding made, parallel under each other, near the side surfaces 8a of the board to be cleaned 8 and arranged with their associated longitudinal axes parallel to these.

On each round carrier rod 55 is a series of Abschabelementen montier-t, each consisting of a profiled, resilient blade 56, which in its central part between the straight surfaces 57 and 58, an angle <£ - of about 135 °, forming an eyelet 59 has a C shape. The end portion of the flat surfaces is slightly curved, as in 60 and 61, in order to bring the scraping section into the most suitable working position. The eye 59 of each elastic lamella 56 is intended to be mounted on the rod 55 by simple manual pressure in a direction perpendicular to the surface of the lamella 56 itself Removal takes place by appropriately bending the parts 57 and 58 of the lamella 56) apart and is also able to rotate about the longitudinal axis A of the round rod 55. During the working phase, the end of the lamella 56 comes into contact with the board 8, scraping the corresponding lateral surface 8a.

This system of mounting the elastic lamellas 56 on the round rods also prevents them from breaking and slackening in the event that they are pushed back.

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bens of the board 8: in this case the slats 56 would simply spring off the corresponding round bar 55 due to the thrust that the board 8 exerts on the end, thanks to the particular design of the slats themselves, never rotation of the elastic slats 56 (not desirable, of course, during the chamfering) is supported by rigid rods 6? prevented, basically parallel to the round rods and adjacent to & ie End.en 57 of the elastic lamellas 56. These rigid rods 6? have the twofold task of preventing the undesired rotation of the elastic lamellae 56 about the axis A during the scraping bevel and to regulate the angular position of the lamellae 56 in relation to the axis A, if one so wishes, through the end 60 to increase [ or to prevent) the pressure exerted on the surface 8, or if one has to compensate for wear of these ends,

'' -Me ntarren rods 6? are in fact adjustable forwards and backwards in relation to the ends 57 of the elastic shafts 56 and in their position, since each is mounted on a thread guide which is connected to the end by bracket 64 ! - 'rushing support beam 16 is attached externally to this in relation to the board R. and are of an appropriately larger diameter than that of the corresponding internal thread guide 63. This larger dimension of each through hole in relation to the corresponding thread guide 63 enables the inclination of each rigid rod 6? along a general axis C in relation to the vertical axis B, with the consequent differentiated regulation of the angular position in relation to the axis A of the elastic blades 56 mounted on the same support rod 55. The displacements and the adjustments of the position of the rigid rod 62 are carried out by adjusting nut ', er η 65, which are screwed onto the thread guide.
Of course, the invention can be carried out in its practical implementation

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also take a different form from the one described above, in particular, multiple changes of a practical nature can be made as would be apparent to an industry technician will appear, without therefore leaving the protected area of the present invention p; eh.t.

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Claims (1)

53HH8 1 ") fascine for cleaning the shuttering boards for formwork and of boards in general for use in construction a solid "frame, mounted on wheels, a pair of parallel rollers, perpendicular to the ground and with corrugated Surfaces for gripping, pushing forward, and pushing out of the shuttering board; suitable tools to clean the side surfaces and the top and bottom edges, as well Nozzles for washing the shuttering boards operated by a pump that sucks in from a bottom container, characterized in that that each of the said rollers, with a corrugated surface, is moved by a gear motor, on part of the Frame (11, 12) is mounted, said parts q'isr in the direction of the heel-side approach and distancing can be moved symmetrically in relation to the central longitudinal plane of the machine by means of two right and left threaded rods ('' O, 31), connected among themselves by a chain transmission, which is carried out by a flywheel (3 ^), which is attached to the upper rod is located, is operated, and further characterized in that the cleaning of the side surfaces of the shuttering board is done by a device that is a reciprocal of profiled Scraping elements comprises, independently of one another, grouped and lined up in at least two rows, each laterally in relation to the boards to be cleaned, while the scraper that cleans the upper edge is at the free end the longer side of a lever 4-8 in L-Porm and with his "Rehpunkt attached to the machine frame in the shorter side, which is connected to one end of a spring, whose the other end is attached to the rear part of the fixed machine frame, with the lever and spring lying on the same plane with the longitudinal plane of the machine. ?) Machine according to claim 1) characterized by BATH ORIGINAL iithe fact that each gear motor (21, 22) having the corresponding Drives gripping rollers, is elastically mounted by bolts (23) in cooperation with coaxial springs (24), so that it adapts to the deformation of the axes of the Rolling under the radial load, generated by the entry of the shuttering board between the V / alzen, obey. 3) machine according to the. Claims 1) and 2) characterized by the fact that., The attachment of the movable frame (13) the machine, the pair of rollers for advancing the board and two or more rows of side scrapers load-bearing, is reached on the fixed machine frame (2) by four blocks (40), which on one side on the supports (41), into which the threaded rods, which approach or distance the moving parts, insert, are fastened and on the other are welded to the lower beams (4, 5) and the upper beams (42, 43) of the fixed frame. 4) machine according to claims 1) and 2) and 3) by the fact that each of the side scraping elements (56) consists of two surfaces (57, 58) which between them an angle with predetermined! Form value and which are profiled in their middle part in the form of an eye, this The eye is used for assembly by pressing the said elastic lamella on a round support rod (55) with the machine frame connected, basically vertically and parallel to the shuttering board to be cleaned, with each elastic lamella on the End of the flat surface has a slight angular bend, so that it is in the optimal working position, wherein each lamella is detachably mounted on said round support rod and is able to adjust its angular position in the To change the relationship to the said longitudinal axis, wherein means are provided for regulating the said position. ^r O engine of claim 4) in accordance with never fact that the means consist of the angular position adjustment of said scraping elements of a block handle, acting on the second end of said elastic blade; whereby the effect of the said block pusher and the corresponding counter-action, exerted by the said round support rod on the said lamella, cause a moment, suitable for rotating said elastic lamella around said vertical axis (A), whereby the block pusher is made ein.starren rod (62) "exists, basically parallel to the called round support rod, "movable in forward and backward directions in relation to said elastic slats and with adjustable position, and said Rod can be inclined, with small inclinations of arbitrary value, - with the ends of said rod on corresponding ones Threaded guides are mounted parallel to each other and firmly connected to the machine frame. 6) machine according to the previous claims by the fact characterized in that the major surfaces (57, 58) of the scraping members form an angle therebetween form about 135 ° and that each of these surfaces ends with two wings (60, 61), symmetrical in relation to the eye (59) and in such a way that one can be alternated with the other in the puncture of the scraper if one of the two wears out. It is sufficient to remove the eye from the round support rod and turn it 180 ° back onto the To set up the pole yourself, 7) Machine according to claim 1) characterized by the fact that said carrier for the shuttering board support has an extension on the front part of the machine, which serves as a drawbar and with at least one Transverse hole is provided for attaching to a traction device. 8) Machine according to the preceding claims, according to the description and illustration.