EP0557261B1 - Apparatus for the manufacture of concrete columns - Google Patents

Apparatus for the manufacture of concrete columns Download PDF

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Publication number
EP0557261B1
EP0557261B1 EP93850032A EP93850032A EP0557261B1 EP 0557261 B1 EP0557261 B1 EP 0557261B1 EP 93850032 A EP93850032 A EP 93850032A EP 93850032 A EP93850032 A EP 93850032A EP 0557261 B1 EP0557261 B1 EP 0557261B1
Authority
EP
European Patent Office
Prior art keywords
concrete
column
unit
gunning
grinding
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.)
Expired - Lifetime
Application number
EP93850032A
Other languages
German (de)
French (fr)
Other versions
EP0557261A1 (en
Inventor
Olli Virtanen
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.)
Partek Concrete Oy AB
Original Assignee
Partek Concrete Oy 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 Partek Concrete Oy AB filed Critical Partek Concrete Oy AB
Publication of EP0557261A1 publication Critical patent/EP0557261A1/en
Application granted granted Critical
Publication of EP0557261B1 publication Critical patent/EP0557261B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/14—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding conical surfaces, e.g. of centres
    • 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
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/30—Producing shaped prefabricated articles from the material by applying the material on to a core or other moulding surface to form a layer thereon
    • B28B1/32—Producing shaped prefabricated articles from the material by applying the material on to a core or other moulding surface to form a layer thereon by projecting, e.g. spraying
    • 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

Definitions

  • the present invention relates to an apparatus for the manufacture of concrete columns, the apparatus having a concrete-gunning unit and a column-grinding unit, the gunning unit having a gun moving along a vertical boom and a grinding disc, by means of which a concrete column is manufactured by gunning a concrete mix against a specific blank turning about its axis, whereafter the hardened column is transferred to the grinding unit, where the surface of the concrete column is ground and polished by means of a second grinding device moving on a vertical boom (see e.g. EP-A-0 440 591).
  • the apparatus is used for manufacturing concrete columns by a concrete-gunning method known per se , described in a number of previous patent applications. After the gunning the fresh concrete is cut and ground straight by means of a rotating tool. Concreting completed, the fresh element is transferred, supported by its jig, to the hardening site. When the element has hardened, it is detached from the jig or is lifted into a grinding apparatus, in which it fits without centering, since the apparatus has the same rotating and supporting devices. The surface of the element is ground down by about 2-4 mm, for example with a diamond tool, whereby the aggregate is exposed, whereafter the element is ground smooth by using polishing tools. All the methods described above are known per se .
  • the manufacturing apparatus is characterized in that both the gunning unit and the grinding unit have tilting devices by means of which the vertical booms can be tilted relative to the axis of the concrete column so that conical columns are produced.
  • tilting the vertical booms of the fresh-working and dry-working tools By tilting the vertical booms of the fresh-working and dry-working tools, a conical column can be produced as easily as can a straight one.
  • the saving in forms is emphasized in the conical column, since the making of a conical form is expensive, and all that is needed in the apparatus according to the invention is control of the travel direction of the moving devices.
  • the actual gun has distance control which enables the distance of the nozzles from the element to be maintained unchanged even though the element narrows towards the upper end.
  • the inner block of the concrete column is of thin metal sheet and the steel reinforcement is conical.
  • the invention is described below in the form of an example, with reference to the accompanying drawing, in which Figure 1 depicts the gunning unit in the apparatus for manufacturing concrete columns, and Figure 2 depicts the grinding unit in the manufacturing apparatus.
  • the apparatus for manufacturing concrete columns has a concrete-gunning unit 1 and a column-grinding unit 2.
  • the gunning unit has a gun 4, moving along a vertical boom 3, and a grinding disc 5.
  • the gun 4 and the grinding disc 5 are located adjacently and can be moved in the lateral direction for the steps required.
  • the concrete mix is sprayed through the nozzle of the gun against a blank rotating about its axis 6, whereby a concrete column narrowing conically upwards is produced. Thereafter, the surface of the column is smoothed by means of the grinding disc 5.
  • the concrete column has hardened, it is transferred to the grinding unit, where the surface of the concrete column is ground and polished by means of a second grinding device 8 moving along a vertical boom 7 in the grinding unit.
  • Both the gunning unit 1 and the grinding unit 2 have tilting devices 9, 10, by means of which the vertical booms can be tilted relative to the axis 11 of the concrete column so that conical columns are produced.
  • the tilts are indicated with dot-dashed lines.
  • Concrete columns manufactured in an apparatus according to the invention can be used for construction purposes as various vertical columns or even by combining cones to each other to produce angular components of a desired shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Complex Calculations (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

An apparatus for manufacturing concrete columns, having a concrete-gunning unit (1) and a column-grinding unit (2) , the gunning unit having a gun (4) moving along a vertical boom (3) and a grinding disc (5), by means of which a concrete column is manufactured by gunning a concrete mix against a specific blank rotating about its axis (6), whereafter the hardened column is transferred to the grinding unit (2), where the surface of the concrete column is ground and polished by means of a second grinding device (8), moving along a vertical boom (7). Both the gunning unit and the grinding unit have tilting devices (9, 10) by means of which the vertical booms (3, 7) can be tilted relative to the axis (11) of the concrete column so that conical columns are produced. <IMAGE>

Description

  • The present invention relates to an apparatus for the manufacture of concrete columns, the apparatus having a concrete-gunning unit and a column-grinding unit, the gunning unit having a gun moving along a vertical boom and a grinding disc, by means of which a concrete column is manufactured by gunning a concrete mix against a specific blank turning about its axis, whereafter the hardened column is transferred to the grinding unit, where the surface of the concrete column is ground and polished by means of a second grinding device moving on a vertical boom (see e.g. EP-A-0 440 591).
  • The apparatus is used for manufacturing concrete columns by a concrete-gunning method known per se, described in a number of previous patent applications. After the gunning the fresh concrete is cut and ground straight by means of a rotating tool. Concreting completed, the fresh element is transferred, supported by its jig, to the hardening site. When the element has hardened, it is detached from the jig or is lifted into a grinding apparatus, in which it fits without centering, since the apparatus has the same rotating and supporting devices. The surface of the element is ground down by about 2-4 mm, for example with a diamond tool, whereby the aggregate is exposed, whereafter the element is ground smooth by using polishing tools. All the methods described above are known per se. The manufacturing apparatus according to the invention is characterized in that both the gunning unit and the grinding unit have tilting devices by means of which the vertical booms can be tilted relative to the axis of the concrete column so that conical columns are produced. By tilting the vertical booms of the fresh-working and dry-working tools, a conical column can be produced as easily as can a straight one. The saving in forms is emphasized in the conical column, since the making of a conical form is expensive, and all that is needed in the apparatus according to the invention is control of the travel direction of the moving devices. The actual gun has distance control which enables the distance of the nozzles from the element to be maintained unchanged even though the element narrows towards the upper end. The inner block of the concrete column is of thin metal sheet and the steel reinforcement is conical. The invention is described below in the form of an example, with reference to the accompanying drawing, in which Figure 1 depicts the gunning unit in the apparatus for manufacturing concrete columns, and
    Figure 2 depicts the grinding unit in the manufacturing apparatus.
  • The apparatus for manufacturing concrete columns has a concrete-gunning unit 1 and a column-grinding unit 2. The gunning unit has a gun 4, moving along a vertical boom 3, and a grinding disc 5. The gun 4 and the grinding disc 5 are located adjacently and can be moved in the lateral direction for the steps required. The concrete mix is sprayed through the nozzle of the gun against a blank rotating about its axis 6, whereby a concrete column narrowing conically upwards is produced. Thereafter, the surface of the column is smoothed by means of the grinding disc 5. When the concrete column has hardened, it is transferred to the grinding unit, where the surface of the concrete column is ground and polished by means of a second grinding device 8 moving along a vertical boom 7 in the grinding unit. Both the gunning unit 1 and the grinding unit 2 have tilting devices 9, 10, by means of which the vertical booms can be tilted relative to the axis 11 of the concrete column so that conical columns are produced. The tilts are indicated with dot-dashed lines. Concrete columns manufactured in an apparatus according to the invention can be used for construction purposes as various vertical columns or even by combining cones to each other to produce angular components of a desired shape.

Claims (1)

  1. An apparatus for manufacturing concrete columns, having a concrete-gunning unit (1) and a column-grinding unit (2), the concrete-gunning unit having a gun (4) moving along a vertical boom (3) and a grinding disc (5), by means of which a concrete column is manufactured by gunning a concrete mix against a specific blank rotating about its axis (6), whereafter the hardened column is transferred to the column-grinding unit (2), where the surface of the concrete column is ground and polished by means of a second grinding device (8), moving along a vertical boom (7), characterized in that both the concrete-gunning unit and the column-grinding unit have tilting devices (9, 10) by means of which the vertical booms (3, 7) can be tilted relative to the axis (11) of the concrete column so that conical columns are produced.
EP93850032A 1992-02-21 1993-02-18 Apparatus for the manufacture of concrete columns Expired - Lifetime EP0557261B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI920163U 1992-02-21
FI920163U FI166U1 (en) 1992-02-21 1992-02-21 Framstaellningsanordning Foer betongpelare

Publications (2)

Publication Number Publication Date
EP0557261A1 EP0557261A1 (en) 1993-08-25
EP0557261B1 true EP0557261B1 (en) 1996-04-17

Family

ID=8533984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93850032A Expired - Lifetime EP0557261B1 (en) 1992-02-21 1993-02-18 Apparatus for the manufacture of concrete columns

Country Status (7)

Country Link
EP (1) EP0557261B1 (en)
JP (1) JPH0658051U (en)
AT (1) ATE136840T1 (en)
DE (1) DE69302198T2 (en)
DK (1) DK0557261T3 (en)
ES (1) ES2087704T3 (en)
FI (1) FI166U1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2306130A (en) * 1995-10-11 1997-04-30 K Wah Construction Products Li Manufacture of concrete pavers
FI105083B (en) * 1998-08-03 2000-06-15 Pertti Juhani Kukkonen Procedure for grinding a round pillar
CN108788958A (en) * 2018-07-06 2018-11-13 合肥格骄电子科技有限公司 A kind of integration conical surface grinding device
CN111791099B (en) * 2020-06-17 2022-05-17 江阴市星海铸造有限公司 Production device and process for inner bobbin casting
CN118635983B (en) * 2024-07-02 2024-12-20 大连日川精密模具部品有限公司 Mould accessory grinding device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE344362A (en) * 1926-06-02
US2669073A (en) * 1952-04-22 1954-02-16 Merle S Bendickson Grinding machine
US3119164A (en) * 1962-02-01 1964-01-28 Norton Co Apparatus for manufacturing ceramic articles
DE2243933C3 (en) * 1972-09-07 1975-05-28 Fa. Heinrich Schaefer, 5620 Velbert Device for producing a conical surface on a machine tool
LU85372A1 (en) * 1984-05-22 1986-01-29 Alexandre Graevenitz Forming fibre-reinforced concrete components - has fibres wound under tension onto mandrel with simultaneous cement spray
EP0311145B1 (en) * 1986-05-22 1992-08-05 Wolfgang Nohlen Method and apparatus for making vessels of cement open at at least one end, for instance of cement mortar and a reinforcement
FI80400C (en) * 1988-04-28 1990-06-11 Betemi Oy Preparation process for concrete pillars or beams
FI90842C (en) * 1990-02-02 1994-04-11 Betemi Oy Method of manufacturing a concrete pillar
FI87747C (en) * 1990-12-12 1993-02-25 Betemi Oy FRAMSTAELLNINGSFOERFARANDE AV BETONGPELARE

Also Published As

Publication number Publication date
ES2087704T3 (en) 1996-07-16
DE69302198T2 (en) 1996-09-19
JPH0658051U (en) 1994-08-12
DK0557261T3 (en) 1996-05-13
FIU920163U0 (en) 1992-02-21
EP0557261A1 (en) 1993-08-25
ATE136840T1 (en) 1996-05-15
FI166U1 (en) 1992-07-15
DE69302198D1 (en) 1996-05-23

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