EP4359184A2 - Dispositif de lissage et procédé de lissage d'un élément en béton - Google Patents

Dispositif de lissage et procédé de lissage d'un élément en béton

Info

Publication number
EP4359184A2
EP4359184A2 EP22744386.8A EP22744386A EP4359184A2 EP 4359184 A2 EP4359184 A2 EP 4359184A2 EP 22744386 A EP22744386 A EP 22744386A EP 4359184 A2 EP4359184 A2 EP 4359184A2
Authority
EP
European Patent Office
Prior art keywords
smoothing
cutting edge
concrete
smoothing device
wing
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.)
Pending
Application number
EP22744386.8A
Other languages
German (de)
English (en)
Inventor
Hendrik Lindemann
Anke LAUBER
Stefan Hain
Roman Gerbers
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.)
Aeditive GmbH
Original Assignee
Aeditive GmbH
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 Aeditive GmbH filed Critical Aeditive GmbH
Publication of EP4359184A2 publication Critical patent/EP4359184A2/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/08—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
    • B28B11/0845—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads for smoothing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • B33Y40/20—Post-treatment, e.g. curing, coating or polishing
    • 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
    • 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

Definitions

  • the invention relates to a smoothing device and a method for smoothing a non-hardened concrete component and a smoothing system.
  • the production of concrete components using the shotcrete method is also characterized by the introduction of air pressure and rebound effects, so that the surface of the concrete component produced in this way has a poor shape and dimensional accuracy and usually presents an unaesthetic surface appearance.
  • concrete components produced in this way are smoothed.
  • the coarse aggregates can break out when they come into contact with a smoothing device and make it difficult or impossible to produce an evenly smoothed surface.
  • smoothing three-dimensional components it must also be taken into account that sharp-edged structures can only be produced with great effort and that they usually have to be reworked manually.
  • smoothing concrete components are to use manually operated smoothing devices, such as a smoothing trowel, a concrete power float or a ride-on smoothing device.
  • smoothing devices such as a smoothing trowel, a concrete power float or a ride-on smoothing device.
  • the achievable surface quality of the smoothed concrete component depends on the skill of the operator.
  • the application of these smoothing devices is essentially limited to flat surfaces.
  • the object is achieved by a smoothing device for smoothing a concrete component, in particular a non-hardened concrete component, in particular a generatively produced concrete component, preferably a concrete component produced using a shotcrete method, comprising a primary cutting edge for separating a concrete layer from the concrete structure, an axis of rotation and a smoothing surface aligned orthogonally to the axis of rotation for areal contact with a cut surface of the concrete component formed by the cutting.
  • the invention is based, inter alia, on the finding that with the known disk-shaped smoothing elements only flat component surfaces can be smoothed and therefore no effective smoothing of a three-dimensional concrete component is possible. Due to the coarse structure of the concrete component close to the surface, smoothing by means of rotation and the known normal forces is not expedient.
  • the inventors have found that by separating a layer of concrete from the concrete structures with the Primary cutting edge and a substantially simultaneous smoothing of the cut surface with the smoothing surface an advantageous smoothing is made possible.
  • the resulting surface is essentially unaffected by the rough concrete component structure, which is caused by the generative process.
  • the quality of the surface is independent of the size of the aggregates used, since these are either pressed into the concrete or separated out of the concrete by the primary cutting edge.
  • the smoothing device has the primary cutting edge for separating the concrete layer from the concrete structure.
  • the primary cutting edge is arranged and designed to cut through concrete, in particular non-hardened concrete.
  • a non-hardened concrete is understood to mean, in particular, a concrete in which the hydration reactions of the binding agent have not been fully completed. Such a concrete can exhibit a tough material behavior, for example.
  • non-hardened concrete can be understood to mean that it only has a green strength; in such a state, the concrete is also referred to as green concrete.
  • the primary cutting edge can be sharp or blunt.
  • a primary cutting edge angle of the primary cutting edge can be between 20° and 180°, for example.
  • the primary cutting edge is preferably arranged along a circumference of the smoothing device.
  • the primary cutting edge can, for example, have a circular contour orthogonal to the axis of rotation.
  • the smoothing device also has the axis of rotation.
  • the smoothing device is preferably designed to be rotatable about the axis of rotation.
  • it is preferred that the smoothing device is designed to be essentially rotationally symmetrical about the axis of rotation.
  • the primary cutting edge preferably has a main extension direction which is aligned essentially orthogonally to the axis of rotation.
  • the main extension direction of the primary cutting edge can also be curved, for example circular.
  • the straightening device preferably extends in the direction of the axis of rotation from a proximal end to a distal end.
  • the distal end is, in particular, the end that is next to the end to be processed facing concrete buildings.
  • the proximal end is preferably the end of the smoothing device that faces a handling device during operation.
  • the smoothing device also has the smoothing surface.
  • the smoothing surface is preferably arranged at the distal end of the smoothing device.
  • the smoothing surface is oriented orthogonally to the axis of rotation. This means in particular that a smoothing surface orthogonal to the smoothing surface and the axis of rotation enclose a tilt angle that is less than 30°, less than 20 ° , less than 10°, less than 5°, less than 2°, less than 0.5° and in particular 0°.
  • the smoothing surface is designed for areal contact with the cut surface of the concrete component formed by the cutting.
  • a cut surface is created on the side of the concrete component where the concrete layer is severed. This cut surface is contacted areally by the smoothing surface, so that it is smoothed.
  • the smoothing surface and the primary cutting edge are arranged and designed such that in a feed direction the primary cutting edge first separates the concrete layer and then the smoothing surface contacts the cut surface.
  • the feed direction is in particular the direction in which the smoothing device is moved along a processing path, for example with a straight movement.
  • the smoothing device is characterized in that the smoothing surface and the primary cutting edge are arranged on a smoothing body, with the smoothing body preferably being designed in the shape of a circular ring and/or wing.
  • the smoothing body preferably being designed in the shape of a circular ring and/or wing.
  • the primary cutting edge is arranged on an outer circumference of the circular ring-shaped smoothing body.
  • the smoothing surface is arranged on a flat side of the smoothing body, in particular an underside.
  • the primary cutting edge is arranged along an outer periphery of the wing-shaped screed.
  • the smoothing surface is preferably arranged on one side, in particular an underside, of the smoothing body.
  • the wing-shaped smoothing body is preferably designed with two, three, four or more wings. Circular and wing-shaped smoothing bodies have the advantage over closed smoothing disks that less frictional energy is transferred to the concrete component and a better surface quality can therefore be produced.
  • a preferred development of the smoothing device is further characterized in that the primary cutting edge is formed on a face of the smoothing device, in particular the smoothing body, and is preferably formed by an inclination of the face and/or a face section of the face to the axis of rotation. Forming the primary cutting edge on the front side also means that the primary cutting edge is formed as such by the front side.
  • the end face can have different, advantageous configurations.
  • the end face can have a surface orthogonal, which is aligned essentially orthogonally to the axis of rotation.
  • the end face can be designed to be inclined relative to the axis of rotation.
  • the surface orthogonal of the end face and the axis of rotation include an angle of ⁇ 90° viewed from the smoothing surface, so that rock grains are pressed into the concrete component when the smoothing device is moved.
  • the aforementioned angle is >90°, so that rock grains are detached in particular from the cut surface.
  • the primary cutting edge is spaced apart from the smoothing surface in the direction of the axis of rotation. Spaced apart from the smoothing surface in the direction of the axis of rotation means in particular that the primary cutting edge is at a greater distance from the distal end of the smoothing device than the smoothing surface is from the distal end, with the smoothing surface preferably forming the distal end.
  • a further preferred embodiment variant of the smoothing device comprises a disposal section, which is preferably designed as a chip flute, which is arranged at least in sections between the primary cutting edge and the axis of rotation.
  • a smoothing device with disposal sections has the advantage that the separated concrete layer can advantageously be removed from the concrete component, for example by means of secondary cutting.
  • a further preferred embodiment of the smoothing device comprises at least one lubricant inlet for guiding a lubricant to the smoothing surface.
  • the lubricant can be, for example, water or a concrete curing agent. Lubricant can reach the smoothing surface through the lubricant feed, so that the surface quality can be further improved by the supply of lubricant.
  • the lubricant can be supplied with or without compressed air. The use of compressed air enables the lubricant to be atomized and thus allows the use of small quantities that can be applied in a targeted manner.
  • the lubricant improves the surface quality in particular in that a lubricating layer of cement paste and lubricant is formed, which on the one hand leads to a smoother surface and on the other hand improves the closing of defects or holes.
  • the lubricant prevents too much frictional heat from developing and discolouring the surface of the concrete component. This also allows for higher speeds and feeds, thereby improving productivity by reducing the time it takes to produce a concrete member.
  • a further preferred embodiment variant of the smoothing device comprises a secondary cutting edge for cutting through the concrete layer separated from the concrete component on a parting side facing away from the smoothing surface, in particular of the smoothing device.
  • the concrete layer is separated using the primary cutter. After cutting, the concrete layer rests on the smoothing device. With a corresponding toughness of the concrete component, the separated concrete layer remains integral and thus impedes further processing.
  • the concrete layer is severed by means of the secondary cutting edge, so that in particular successive concrete layer sections are formed and removed by the rotational movement of the smoothing device.
  • the secondary cutting edge thus enables a uniform process that has fewer random error influences.
  • the secondary cutting edge has a greater spacing from the smoothing surface in the direction of the axis of rotation than the primary cutting edge. This ensures that the concrete layer is severed with a high degree of process reliability after separation by the secondary cutter.
  • a main direction of extent of the secondary cutting edge is preferably aligned orthogonally to the axis of rotation and/or orthogonally to the main direction of extent of the primary cutting edge.
  • a preferred further development of the smoothing device comprises a wing-shaped cutting body, which is arranged on a side of the smoothing body facing away from the smoothing surface and has the secondary cutting edge.
  • the wing-shaped cutting body can form the secondary cutting edge.
  • a cutting body with two or more blades advantageously forms the secondary cutting edge along a circumference of the smoothing device, so that the concrete layer that has been cut off is severed at regular time intervals.
  • the smoothing body is ring-shaped and the cutting body is wing-shaped.
  • Another preferred embodiment of the smoothing device is characterized in that the smoothing body has the smoothing surface, the primary cutting edge and the secondary cutting edge.
  • a smoothing body designed in this way enables a simple construction of the smoothing device.
  • the smoothing body is designed in the shape of a wing.
  • the primary cutting edge preferably has a wing-shaped contour, since this is in particular along an outer circumference of the wing-shaped Smoothing body is arranged.
  • the smoothing body is formed in one piece.
  • the smoothing body is designed in such a way that the smoothing surface can be replaced.
  • the smoothing body can have an exchangeable smoothing unit comprising the smoothing surface and/or the primary cutting edge or cutting edges.
  • the wing-shaped smoothing body has four wing elements, each with a primary cutting edge, two first wing elements extend in a first wing direction and two second wing elements extend in a second wing direction orthogonal to the first wing direction.
  • the secondary cutting edges of the first wing elements are arranged along a first cutting line and/or the secondary cutting edges of the second wing elements are arranged along a second cutting line.
  • a homogeneous process can be set up with secondary cutting edges arranged in this way.
  • first cutting line and the second cutting line are aligned orthogonally to one another and/or orthogonally to the axis of rotation.
  • This arrangement leads to a smooth process during operation of the smoothing device.
  • the smoothing device has a receiving pin arranged coaxially to the axis of rotation.
  • the locating pin can be used, for example, for coupling to a handling unit, for example a robot.
  • the receiving pin preferably has a fluid guide for supplying a lubricant. This feed is preferably fluidically coupled to the lubricant feed.
  • a further preferred embodiment variant of the smoothing device comprises a free surface which is arranged on the parting side, in particular of the smoothing device, the free surface preferably being formed by the smoothing body and/or by the cutting body. It is preferred that the secondary cutting edge is arranged adjacent to the free surface in such a way that material located on the free surface reaches the secondary cutting edge as a result of a rotation and a movement of the smoothing device in a feed direction.
  • the concrete layer can advantageously be fed to the secondary cutting edge through the open area, so that it can advantageously be severed by the secondary cutting edge.
  • a smoothing system for smoothing a concrete component comprising a smoothing device according to one of the embodiment variants described above and a handling device, in particular a robot, for example an articulated-arm robot, for the rotary and/or translatory movement of the smoothing device, wherein the smoothing device is mechanically coupled to the handling device.
  • the handling device is preferably set up to drive and/or move the smoothing device in rotation about the axis of rotation.
  • the handling device preferably comprises a drive, in particular a driven spindle, for driving the smoothing device in rotation. Furthermore, the handling device is preferably set up to guide lubricant to the smoothing device.
  • the smoothing system has two or more smoothing devices to meet different processing requirements.
  • the handling device preferably has a frequency-controlled spindle in order to be able to adapt the speed to a specific machining task. For example, high speeds are set for high material removal rates and low speeds for high surface qualities.
  • the spindle preferably has a rotary passage through which the lubricant can be guided to the smoothing device via internal fluid channels.
  • the handling device has a force torque sensor system with which the smoothing device can be guided under force.
  • the object mentioned at the beginning is achieved by a method for smoothing a concrete component, in particular a non-hardened concrete component, in particular a generatively produced concrete component, preferably a concrete component produced using a shotcrete method, comprising the steps: Separating a concrete layer from the concrete component, in particular with a smoothing device according to one of the embodiment variants described above, and parallel smoothing of a cut surface formed by the cutting on the concrete component, in particular with a smoothing device according to one of the embodiment variants described above.
  • this includes the step of dividing, in particular cutting, the separated concrete layer with a secondary cutter.
  • the method includes the step: loosening and/or pressing in rock grains protruding from the cut surface,
  • the cutting off and/or smoothing is initially carried out starting from a first edge of the concrete component with a first feed direction, with this cutting off and/or smoothing being interrupted in front of a second edge of the concrete component arranged opposite the first edge, and then from starting from the second edge, the separation and smoothing is continued with a second feed movement directed opposite to the first feed direction. It is preferred that the surface produced in this way is then smoothed again.
  • the concrete component has edges, lateral, vertically aligned surfaces and an upper, horizontal surface, comprising the steps: angled cutting off and smoothing of the edges of the concrete component, cutting off and smoothing of the lateral surfaces, cutting off and Smooth the top surface and smooth the edges, doing the steps in this order.
  • a further preferred embodiment of the method comprises the step: delivery and first subsequent smoothing as well as subsequent second subsequent smoothing essentially without delivery.
  • the delivery relates in particular to the delivery of a smoothing device to the concrete structures.
  • the edges are cut at an angle to the surfaces forming the edges.
  • a further preferred development of the method is characterized in that the edges are first cut, then the concrete layer is cut off on vertically oriented, lateral surfaces and the cut surface is smoothed, then the concrete layer is cut off on a horizontally oriented, upper surface and the cut surface is smoothed and then the edges are smoothed.
  • the cut surface or the cut surfaces is or are structured after the smoothing.
  • a structured cut surface can have a broomstick geometry or a wood structure geometry, for example.
  • a further preferred embodiment of the method is characterized in that the smoothing takes place in a torque-controlled manner. Furthermore, before and/or during smoothing, lubricant can be applied to the cut surface. In addition, it is preferable that the smoothing is done with a smoothing device. In particular, a smoothing device according to one of the embodiment variants described above is carried out, with a speed of the smoothing device being varied.
  • FIG. 1 a schematic, three-dimensional view of an exemplary embodiment of a smoothing device
  • FIG. 2 a schematic, three-dimensional view of the smoothing device shown in FIG. 1;
  • FIG. 3 a schematic, two-dimensional view of the smoothing device shown in FIG. 1;
  • FIG. 4 a schematic, three-dimensional view of a further exemplary embodiment of a smoothing device;
  • FIG. 5 a schematic, two-dimensional view of the smoothing device shown in FIG. 4;
  • FIG. 6 a schematic, two-dimensional view of the smoothing device shown in FIG. 4;
  • FIG. 7 a schematic two-dimensional view of an exemplary embodiment of a smoothing system.
  • Figure 8 a schematic method.
  • the smoothing device 100 shown in FIGS. 1-3 has an axis of rotation 102 about which the smoothing device 100 is designed to be essentially rotationally symmetrical.
  • the smoothing device 100 also has an annular smoothing body 108, on the outer circumference of which a primary cutting edge 104 is formed.
  • the smoothing body 108 forms the smoothing surface 106 which, during operation of the smoothing device 100, makes planar contact with a cut surface 4.
  • the cutting body 110 is wing-shaped. By arranging the cutting body 110 designed in this way on the smoothing body 108, the disposal sections 114-120 are formed.
  • the smoothing body 108 forms free surfaces 124 between the wings of the cutting body 110 . From the open spaces 124 is the separated layer of concrete out to the secondary cutters 122 and separated there. Furthermore, the smoothing device 100 has a receiving pin 128 for coupling to a handling device.
  • FIG. 3 also shows smoothing device 100 in operation.
  • the smoothing device 100 is guided through a concrete component 1 in the feed direction V in such a way that a concrete layer 2 is separated, so that a cut surface 4 is formed on the concrete component.
  • the cut surface 4 that has not yet been produced is shown in dashed lines.
  • the concrete layer 2 is severed with the primary cutting edge 104 .
  • the primary cutting edge 104 is formed by an end face section of the end face 128 of the smoothing body 108 .
  • the separated concrete layer 2 is located immediately after separation on the separation side 130 of the smoothing device 100. There the concrete layer 2 is guided to the secondary cutters 122 and continuously separated by them, so that the concrete layer 2 is separated into individual pieces and can therefore be removed.
  • FIG. 1 The smoothing device 100 is guided through a concrete component 1 in the feed direction V in such a way that a concrete layer 2 is separated, so that a cut surface 4 is formed on the concrete component.
  • the cut surface 4 that has not yet been produced is shown
  • the smoothing device 200 has an axis of rotation 202 in an analogous manner.
  • the smoothing body 208 of the smoothing device 200 has a smoothing surface 206 .
  • the smoothing body 208 also forms a total of four primary cutting edges 204, 204', 204'', 204'''.
  • the primary cutting edges 204, 204', 204", 204''" are arranged on the two first wing elements 230, 232 and the two second wing elements 234, 238.
  • the wing elements 230-236 have a total of four secondary cutting edges 222, 222', 222', 222''.
  • the open spaces 224, 224', 224", 224"' are provided on the wing elements 230 - 236.
  • the smoothing body 208 and the cutting body 210 are formed integrally.
  • a lubricant inlet 212 is arranged on the locating pin 228 .
  • the disposal sections 214 - 220 are formed by the geometry of the smoothing device 200 .
  • the end face 228 of the smoothing device 200 shown in FIG. A surface orthogonal of the end face 228 encloses an angle of ⁇ 90° starting from the smoothing surface 208 with the axis of rotation 202 .
  • Figure 7 shows a smoothing system 238, which comprises a smoothing device 200 and a handling device 240, wherein the smoothing device 200 is mechanically coupled to the handling device 240, in particular in such a way that the smoothing device 200 is driven in rotation about the axis of rotation 202 by the handling device 240.
  • a schematic method is shown in FIG.
  • step 300 a concrete layer 2 is severed from the concrete structure 1 with a primary cutter 104, 204, 204', 204", 204"'.
  • Step 302 takes place essentially at the same time as step 300, in which, at the same time, a cut surface 4 formed by the separation on the concrete component 1 is smoothed with a smoothing surface 108, 208 at the same time, in step 304 the separated concrete layer 2 is 222, 222', 222', 222'', in particular cut.
  • rock grains protruding from the cut surface 4 are also loosened or pressed in.
  • this can be produced with a high surface quality, since a surprisingly good surface can be produced with the smoothing device 100, 102 through the combination of layer removal and smoothing.
  • Secondary cutting edge 122, 222, 222', 222', 222'' enables a homogeneous process for producing high surface qualities.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Abstract

L'invention concerne un dispositif de lissage (100, 200) pour lisser un élément en béton (1), comprenant une lame primaire (104, 204, 204', 204", 204''') servant à séparer une couche de béton de l'élément en béton, un axe de rotation (102, 202), et une surface de lissage (106, 206) orientée orthogonalement à l'axe de rotation (102, 202) et destinée à venir en contact de façon plane avec une surface de coupe de l'élément en béton (1), formée par la séparation.
EP22744386.8A 2021-06-24 2022-06-22 Dispositif de lissage et procédé de lissage d'un élément en béton Pending EP4359184A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021116332.3A DE102021116332A1 (de) 2021-06-24 2021-06-24 Glättvorrichtung und Verfahren zum Glätten eines Betonbauteils
PCT/DE2022/100458 WO2022268262A2 (fr) 2021-06-24 2022-06-22 Dispositif de lissage et procédé de lissage d'un élément en béton

Publications (1)

Publication Number Publication Date
EP4359184A2 true EP4359184A2 (fr) 2024-05-01

Family

ID=82655300

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22744386.8A Pending EP4359184A2 (fr) 2021-06-24 2022-06-22 Dispositif de lissage et procédé de lissage d'un élément en béton

Country Status (5)

Country Link
EP (1) EP4359184A2 (fr)
JP (1) JP2024520707A (fr)
CN (1) CN117561150A (fr)
DE (1) DE102021116332A1 (fr)
WO (1) WO2022268262A2 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH516045A (de) * 1969-06-09 1971-11-30 Deutsche Asphalt Gmbh Vorrichtung zum Ausbreiten und Glattstreichen einer noch form- und ausstreichbaren Asphaltmasse
DE2263791A1 (de) * 1972-12-28 1974-07-04 Leonhard Eberle Putzhobel fuer putzarbeiten
FR2571650A1 (fr) * 1984-10-16 1986-04-18 Simo Dispositif pour le lissage d'elements en beton moules
DE20105199U1 (de) 2001-03-26 2002-08-08 Diewe Diamantwerkzeuge Gmbh Schleifwerkzeug
AU2009260765A1 (en) * 2008-02-27 2009-12-23 Somero Enterprises, Inc. Concrete finishing apparatus
KR20140117222A (ko) * 2013-03-26 2014-10-07 박종남 핸드 휘니샤
CA3019606C (fr) * 2016-12-20 2019-07-02 2544-9455 Quebec Inc. Appareil de finition de beton motorise ayant une surface de travail annulaire
DE112018001686T5 (de) 2017-03-31 2019-12-19 Makita Corporation Elektrisch angetriebenes Werkzeug
CN206843912U (zh) * 2017-06-23 2018-01-05 韩志宾 一种带有喷水装置的旋转式路面水泥抹光机
RU2704995C1 (ru) * 2018-08-02 2019-11-01 Луи-Андре Кристоф Жислен Грюар Способ возведения бетонной стены, рабочий орган строительного 3d-принтера и стена бетонная
DE102019131051B4 (de) * 2019-11-18 2024-05-08 AEDITIVE GmbH Verfahren zur Herstellung eines bewehrten Betonbauteils, bewehrtes Betonbauteil und Fertigungssystem
CN113005857A (zh) * 2021-04-21 2021-06-22 卢井 塑胶跑道抹平机

Also Published As

Publication number Publication date
WO2022268262A3 (fr) 2023-03-23
DE102021116332A1 (de) 2022-12-29
JP2024520707A (ja) 2024-05-24
CN117561150A (zh) 2024-02-13
WO2022268262A2 (fr) 2022-12-29

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