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
  • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
  • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
  • E04G21/10—Devices for levelling, e.g. templates or boards
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
  • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
  • E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
  • E01C19/18—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect
  • E01C19/187—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect solely for spreading-out or striking-off deposited mixtures, e.g. spread-out screws, strike-off boards
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
  • E04F21/00—Implements for finishing work on buildings
  • E04F21/20—Implements for finishing work on buildings for laying flooring
  • E04F21/24—Implements for finishing work on buildings for laying flooring of masses made in situ, e.g. smoothing tools
  • E04F21/245—Rotary power trowels, i.e. helicopter trowels
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
  • E04F21/00—Implements for finishing work on buildings
  • E04F21/20—Implements for finishing work on buildings for laying flooring
  • E04F21/24—Implements for finishing work on buildings for laying flooring of masses made in situ, e.g. smoothing tools
  • E04F21/245—Rotary power trowels, i.e. helicopter trowels
  • E04F21/248—Rotary power trowels, i.e. helicopter trowels used by an operator walking behind the trowel, i.e. walk-behind power trowels

Definitions

• the present invention relates on the one hand to a device for distributing, leveling and smoothing concrete and cement mortar coatings for the production of underlay floors according to the preamble of patent claim 1.
• the invention relates to a method for operating such a device.
• the present invention has for its object to provide a device of the type mentioned, which allows effortless ⁇ work and overcomes the disadvantages of the known devices and techniques and is capable of both that usually delivered in several smaller piles Distribute, level and finally smooth the distribution material so that the underlay prepared in this way meets all quality requirements without reworking.
• this object is achieved by a device as defined in claim 1.
• the advantages achieved by the invention are essentially to be seen in the fact that the process of distributing and panning the concrete and cement mortar and smoothing the leveled underlay floor can be done with a single device, and the mortar can be pulled off in a kneeling position not applicable.
• the device according to the invention achieves a significantly higher daily output compared to the conventional daily output of a chord-floor layer with a "vibrating slat" and trowel on the knees, with noticeably no physical exertion.
• the device according to the invention is able to meet the planicity tolerances, such as those defined by the relevant construction standards, e.g. Switzerland must comply with the SIA standards.
• the device according to the invention also makes it easier to maintain the required planicity of the subfloor to be introduced if it has to have a predetermined inclination.
• FIG. 1 shows a first embodiment of the device according to the invention with a support that can be clamped between the ceiling and floor and a two-part bracket, from the side,
• a first variant of the boom which can be 3 or more times
• FIG. 9 shows a second embodiment variant of the device according to the invention with a telescopic boom, from the side,
• 11 is a first alternative support of the boom in the form of a floor bracket, from the side,
• Fig. 14 shows a fourth alternative support of the boom in the form of a clamp bracket
• the device according to the invention consists essentially of a support 1, a boom 2 and a puller 3.
• the support 1 serves the bracket 2 as a support and axis of rotation or fulcrum, whereby the support 1 should be perpendicular to it in order to achieve the required planicity and inclination of the surface of the underlay to be created. How this is achieved is described below with reference to FIG. 3.
• the boom 2 consists of an inner arm segment 21 and an outer arm segment 22, which are articulated to one another by a joint 25.
• the pulling device 3 is articulated on the outer arm segment 22 on the outside.
• the distribution screw 34 and its drive unit 33/34 are advantageously combined in a holding bracket 37 and connected to a handle 36 via a shaft 31.
• the shaft 31 can be supported on the outer arm segment 22 by means of an adjusting ring 24.
• a lifting handle 38 can be provided to lift the entire puller 3.
• a locking device 39 which is described with reference to FIGS. 7 and 8, serves to fix the distribution screw 32 in its two working positions.
• FIG. 2 illustrates the three working areas of the device according to the invention in the embodiment variant according to FIG. 1.
• the articulated connection of the pulling device 3 with the outer arm segment 22 creates a first working area A1, the center of which is thanks to the articulated connection of the outer arm segment 22 is movable with the inner arm segment 21 on the circle of the second working area A2.
• the support 1 serves as a fulcrum for the arm 2
• the joint 25 can be positioned anywhere between the two arm segments 21 and 22 on the circle A, such that a third work area A3 is created, the
• Center forms the support 1 and its radius is the largest
• the support 1 As was mentioned on the occasion of the description of FIG. 1, for achieving the required planicity and inclination of the surface of the underlay that can be produced with the aid of the device according to the invention, it is of the utmost importance that the support 1, respectively.
• an adjustable support 1 as shown in FIG. 3, is advantageously used.
• the support 3 essentially consists of three tubes lying one inside the other, an outer tube 16, a middle tube 18 and an inner tube 17.
• the outer tube 16 is supported on the middle tube 18 via a ball joint 19, its inner diameter being markedly larger than the outer diameter of the central tube 18.
• the inner tube 17 runs in the middle tube 18 and can be extended more or less from the middle tube 18 by means of a stationary wheel 15 via a deflection gear 14 and a threaded spindle 13 such that the unit consisting of the inner and middle tubes 17 and 18 is fixed can be clamped between the fixed floor B and the fixed ceiling D of the space to be provided with a subfloor. It is advantageous to ensure that this unit is already as vertical as possible. is set in order to be able to set the axis of rotation C of the boom 2 perfectly perpendicular within the leveling limits of the outer tube 16.
• a wedge-shaped mounting 23 is especially suitable. It allows a positive and frictional Verbin ⁇ connection between support 1 and the boom 2, without having to If necessary, however, foldable screws which can be swiveled into grooves and have wing nuts can be provided at the bottom of the suspension 23 in order to prevent any unintentional bending of the arm 2 towards the top, but this is normally not necessary because the weight of the arm 2 itself and the pulling device 3 hanging on the outside guarantee a firm connection of the support 1 and the arm 2 in the wedge-shaped suspension 23.
• a wedge-shaped suspension is therefore particularly well suited for the connection of the support 1 and the arm 2 because it couples the two elements together in a position defined in each direction.
• FIG. 6a and 6b show a further variant of a cantilever, in which in particular the joint 25 'differs from that of the cantilever 2 according to FIG. 1 in that the two arm segments 21' 1 and 22 '' step towards one another are different.
• the joint 25 ' is constructed such that the outer arm segment 22''can advantageously be rotated under the inner arm segment 21''.
• this joint 25 f can also be designed such that the outer arm segment 22 ′′ can be connected to the inner arm segment 21 , f by means of a wedge-shaped suspension.
• the outer arm segment 22 ′′ can also be provided at its outer end with a standardized wedge-shaped suspension, into which either a suitably equipped puller 3 or a third arm segment 22a can be hung can.
• equipping the pulling device 3 with such a wedge-shaped suspension 23 offers further advantages, since it enables the device to be further simplified by making each device component, ie the support 1, the extension arm 2 and the pulling device 3 individually are manageable. Thanks to the wedge-shaped suspensions 23, these components are also stylish and very easy to connect.
• FIG. 7 and 8 illustrate a simple and advantageous mechanism for the locking device 39 which can consist essentially of adjusting pins 40 and 41 with associated cable pulls 42 and 43 in such a way that they can be operated from the handle 36. It is advantageous if both the distribution screw 32 and the drawbar 35 of the handle 36 can be adjusted in their inclinations in order to enable an optimal handle height in every working position of the distribution screw 32.
• FIG. 7 further shows a cover 30 which can be connected to the holding bracket 37 and serves to prevent the distribution material 4 from being whirled around by the distribution screw 32.
• FIG. 9 shows a second embodiment of the device according to the invention, which has individual additives which can of course also be present in the embodiments of the device according to the invention in accordance with the other figures.
• This variant of the device according to the invention essentially differs in that the arm 2 'can be telescopically extended and retracted.
• the support 1 not shown here
• Such a cantilever 2 'can be advantageous in certain applications of the device according to the invention, since the floor layer working with it may not have to pay attention to the joint 25 rotating in space.
• the pulling-off device 3 can be provided with a gauge 10, from which the working heights of the distribution screw 3 can be measured.
• the height adjustment of the pulling device 3 can, instead of being carried out by hand, as indicated here, be carried out electrically with a motor 20 which, for example via a satellite drive and a threaded rod, the shaft 31 relative to one with respect to the boom 2 'or. the gauge 10 fixed adjusting ring 24 ', up and down shifts.
• an automatic leveling device 26 can also be provided, which functions, for example, with a laser and at all times ensures that the distributing screw 32 is at the set working height from the ground. It goes without saying that the mechanical locking device 39 is superfluous in this embodiment of the puller 3.
• the handle 36 ' can be designed as a so-called 90 ° semicircular guide handle which is rotatably mounted in the wedge-shaped suspension 23 of the pulling device 3 and is rotationally connected to the shaft 31 and the up and down movements does not participate in the distribution screw 32.
• the device according to the invention can also be supported on a support of a different design. 11, 12, 13 and 14 are non-limiting examples of such alternative supports.
• FIG. 11 illustrates a support 1 ' , which can be set up, for example, by means of a firing pin 5 in the floor B as a pull anchorage.
• a support 6 can be provided at the bottom of a tube 7, within which tube a threaded rod 9 provided with a hook 8 runs.
• a handwheel 27 which cooperates with the threaded rod 9, the tube 7 can be fixed and can be pushed back against the floor B, so that the tube 9 serves as a tilt-proof support for a wedge-shaped suspension 23 which can be rotated around it.
• the support 6 can be underlaid accordingly before the pipe 7 is tightened.
• the wedge-shaped suspension 23 can be part of a construction which consists of a fixed frame made of two cross members 28 and a connecting piece 29 which is clamped onto the tube 7 by means of hand wheels 44 and associated clamping mechanisms.
• the tube 7, as indicated for example in FIG. 12, can also be provided in its lower part only with a support ring on which the frame, the two cross members 28 of which are provided with holes matching the tube 7 without play, is supported.
• FIG. 12 An almost identical support 1 »1 is shown in FIG. 12. It differs from that according to FIG. 11 essentially in that it is suitable for supporting against the ceiling D, where it can also be fastened with a weft bolt 5. Like that, it has a support 6, a tube 7, a central threaded rod 9 and the frame consisting of two cross members 28 and the connecting piece 29, to which a wedge-shaped suspension 23 is connected for a boom. With this support 1 »» , too, the wedge-shaped suspension 23 is advantageously brought into position by supporting the support 6.
• a further alternative support 1 * 1 ' is shown in FIG. 13. It is intended to support the wedge-shaped suspension 23 for the bracket 2 against a vertical wall W.
• it also contains a frame consisting of two cross members 28 and a connecting piece 29, which, however, is reinforced by a strut 45, through which screws 46 anchored in shot bolts 5 can pass, to which the frame is transferred, for example by means of wing nuts 47 two supports 6 'can be braced against the wall W.
• a further alternative support 1 '' 'shown in FIG. 14 This support serves to the boom 2 on a wall W, spielvati at a door opening, to serve as a support. It consists in turn substantially comprises a frame having two crossbeams 28 which can be clamped to the wall W by means of handwheels 44 and associated clamping mechanisms and which are firmly connected to one another by a connecting piece 29.
• This support 1 »» »» can also be brought into alignment by placing the clamping mechanisms and cross members 28 under it Partially, however, the wedge-shaped suspension 23 is inserted into the crossmember 28 such that it can be rotated and leveled, for example by placing it on a threaded rod 48 which is supported at the bottom by a ball joint 19 f in the lower crossmember 28 and at the top in a, by means of two set screws 49 arranged at right angles to each other (see also FIG. 10), positionable bearing bush 50 in the upper cross member 28 Thanks to a leveling level 12, the axis of rotation C of the boom 2 can be brought into vertical alignment without any problems.
• suspensions for the extension arm and the pulling device in addition to the wedge-shaped configuration acting upwards as seen from above as a dovetail, such that one also with respect to large lateral and / or vertical Forces positive and non-positive connection between the said components of the device can be ensured. It is also possible, e.g. to design the suspension according to FIG. 14 in such a way that the cross member can be mounted on any support that is normally used on the building. Other design variants and combinations can also be implemented without any problems.

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Mechanical Engineering (AREA)
• On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
• Conveying And Assembling Of Building Elements In Situ (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=4235917

Family Applications (1)

Country Status (4)

Families Citing this family (7)

Family Cites Families (5)

• 1986
  • 1986-06-25 CH CH2532/86A patent/CH672938A5/de not_active IP Right Cessation
• 1987
  • 1987-06-25 EP EP87903845A patent/EP0270620A1/de not_active Withdrawn
  • 1987-06-25 AU AU75488/87A patent/AU7548887A/en not_active Abandoned
  • 1987-06-25 WO PCT/CH1987/000075 patent/WO1988000270A1/de not_active Ceased

Non-Patent Citations (1)

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