EP1060853B1 - Cement mixer with compact rotating mechanism on swivel-bucket arm - Google Patents

Cement mixer with compact rotating mechanism on swivel-bucket arm Download PDF

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Publication number
EP1060853B1
EP1060853B1 EP19990201923 EP99201923A EP1060853B1 EP 1060853 B1 EP1060853 B1 EP 1060853B1 EP 19990201923 EP19990201923 EP 19990201923 EP 99201923 A EP99201923 A EP 99201923A EP 1060853 B1 EP1060853 B1 EP 1060853B1
Authority
EP
European Patent Office
Prior art keywords
arm
bucket
cement mixer
bush
mixer according
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
EP19990201923
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1060853A1 (en
Inventor
Carlo Cerutti
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.)
San Marco International Srl
Original Assignee
San Marco International Srl
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 San Marco International Srl filed Critical San Marco International Srl
Priority to ES99201923T priority Critical patent/ES2210964T3/es
Priority to DE69912751T priority patent/DE69912751D1/de
Priority to EP19990201923 priority patent/EP1060853B1/en
Publication of EP1060853A1 publication Critical patent/EP1060853A1/en
Application granted granted Critical
Publication of EP1060853B1 publication Critical patent/EP1060853B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/18—Mixing in containers to which motion is imparted to effect the mixing
    • B28C5/1825—Mixers of the tilted-drum type, e.g. mixers pivotable about an axis perpendicular to the axis of rotation for emptying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/18—Mixing in containers to which motion is imparted to effect the mixing
    • B28C5/1825—Mixers of the tilted-drum type, e.g. mixers pivotable about an axis perpendicular to the axis of rotation for emptying
    • B28C5/1856—Details or parts, e.g. drums

Definitions

  • the present invention relates to a cement mixer with a compact rotating mechanism on the swivel-bucket arm.
  • a swivel bucket is supported on a structure, called an arm, relative to a horizontal axis comprising pairs of end shafts which are arranged in two special bushes.
  • This structure has the possibility of rotating about the horizontal axis, which is common to the two base bushes, and moreover has at one end a bevel pinion which meshes with the teeth of a gearing arranged integrally with the external surface of the bucket.
  • an external motor via a suitable belt transmission, drives the pinion and causes the rotating movement of the bucket.
  • This cement mixer although eliminating all of the above problems, has a complex structure and is bulky.
  • DE 1 259 756 B discloses a cement mixer comprising the features of the preamble of claim 1.
  • the object of the present invention is that of providing a cement mixer of this latter type which also overcomes all the abovementioned technical problems of a simple design and structure, in particular with regard to transmission of the movement.
  • Another object of the present invention is that of providing a cement mixer which is able to overcome the drawbacks described above and therefore, in any case, that of providing a cement mixer which has a low noise level and minimum danger factor.
  • This cement mixer essentially consists of a fixed base structure 1 - referred to below as base - resting on the ground by means of wheels with tyres 2 and support legs 3.
  • the top part of the base has, fixed to it integrally, two supports 4 and 5 carrying two bushes 6 and 7 with coinciding horizontal axes.
  • a structure 8, referred to below as arm, has at one end a shaft 9 which is coaxial with the bush 6 and inserted inside it and, at the other end, a bush 10 which is aligned and coaxial with the bush 7.
  • the structure 8 or arm has the possibility of rotating about the horizontal axis, referred to below as axis X, which is common to the two bushes 6 and 7 of the base as well as to the shaft 9 and to the bushes 10 of the arm 8.
  • the arm 8 has, integral with it, in a suitable position vertically with respect to the axis of rotation of the arm, a shaft 11 which is integral with the structure of the arm and on which a mixing bucket 12 of the cement mixer is mounted by means of ball bearings.
  • the bucket 12 therefore has the possibility of rotating about the shaft 11 of the arm 8 and the arm 8 has the possibility of rotating on the supports 4 and 5 about the horizontal axis X of the bushes 6, 7 and 10 and the shaft 9.
  • the end part of one (or two) external component(s) 31 of one (or two) telescopic arms is integrally attached, according to the invention, in a suitable position and in the vicinity of the bush 10, to the inside of the arm 8, alongside the bucket 12.
  • the end part of one (or two) more internal component(s) 32 of the telescopic arm itself, which has the possibility of sliding axially inside the external component 31, is fixed integrally to a sleeve 33.
  • These two components 31, 32 form support means for drive means.
  • These drive means comprise a motor means 34, of the electric, diesel or internal-combustion type, which is fixed to a support bracket 35 in turn fixed integrally in a suitable position to the sleeve 33 and to the internal component 32 of the telescopic arm.
  • This fixing arrangement is formed so that, when the arm 8 rotates about the axis X, the components 31 and 32 of the telescopic component and the support bracket 35 also perform the same rotational movement, integrally and about the axis X.
  • a pulley 36 which is keyed onto one end of the motor 34, transmits the rotational movement of the motor by means of one or more belts 37 to a second pulley 38.
  • This second pulley 38 is keyed to one end of a shaft 39 which is supported by ball bearings inside the sleeve 33.
  • a third pulley 40 which has a diameter smaller than that of the second pulley 38, is keyed to the other end of the shaft 39.
  • one or more belts 41 are wound onto the pulley 40 and around a considerable portion of the external surface of the mixing bucket 12, in a central zone with a larger diameter.
  • An element 42 is fixed integrally at one end to the sleeve 33 and at the other end to a bush 43 having the possibility of sliding inside the bush 10 integral with the arm 8.
  • the support bracket 35 for the motor 34 is fixed integrally in a suitable position to the element 42.
  • the external surface of the bush 43 is provided with a thread of suitable pitch so as to receive a nut or a threaded ring 44.
  • the axial displacement of the bush 43 causes the axial displacement of the element 42, the internal component 32 of the telescopic arm, the sleeve 33 and the support bracket 35. In this way, by screwing the nut or the ring 44 onto the threaded bush 43, the belts 41 wound onto the external surface of the bucket and onto the pulley 40 are tensioned.
  • the motor 34 and all the support structures and mechanisms arranged between the motor and the belts 41 are contained inside a cabinet 46 which is integral with the arm 8.
  • This cabinet has the function of providing protection against adverse weather conditions and of preventing accidents by isolating the moving and movable parts.
  • the body of the cabinet 46 is provided with suitable slits (not shown) so as to allow both any mixing materials conveyed inside by the movement of the belts and any water which may have penetrated to fall to the ground. Moreover the slits provide, at the same time, efficient internal ventilation so as to allow disposal of the heat produced by the motor during operation.
  • the electric power supply cable of the motor 34 in order to pass from the rotating part to the fixed part of the cement mixer on which the stop and start switch is arranged, is introduced inside the bush 43 so as to avoid any possibility of becoming entangled between the fixed parts and the rotating parts of the machine.
  • the pulley 36, the belts 37, the pulley 38, the shaft 39 and the sleeve 33 may alternatively by replaced by a gear reducer or by a simple pair of gears or by a chain and gearwheel transmission which receive the rotational movement from the motor and transmit it, suitably reduced, to the belts wound onto the external surface of the bucket.
  • the present invention has provided a swivel-bucket cement mixer for mixing mortar, concrete or various mixtures used in the building sector, which is operated by a motor of a suitable nature provided with a system for transmission of the movement from the motor to the bucket, with an entirely novel and original design.
  • Provision of the drive system inside the arm results in a reduction in the overall length of the cement mixer. This saving in space allows the loading of a greater number of machines onto the platform of a motor vehicle and consequently a reduction in the costs of transportation of the cement mixers.
  • the machine is less noisy as a result of the reduction, to a minimum, of the number of moving parts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP19990201923 1999-06-16 1999-06-16 Cement mixer with compact rotating mechanism on swivel-bucket arm Expired - Lifetime EP1060853B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES99201923T ES2210964T3 (es) 1999-06-16 1999-06-16 Hormigonera provista de un mecanismo de rotacion compacto montado sobre un brazo de cubeta pivotante.
DE69912751T DE69912751D1 (de) 1999-06-16 1999-06-16 Betonmischer mit einer auf dem Schwenkarm der Mischtrommel getragenen kompakten Drehantriebsvorrichtung
EP19990201923 EP1060853B1 (en) 1999-06-16 1999-06-16 Cement mixer with compact rotating mechanism on swivel-bucket arm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19990201923 EP1060853B1 (en) 1999-06-16 1999-06-16 Cement mixer with compact rotating mechanism on swivel-bucket arm

Publications (2)

Publication Number Publication Date
EP1060853A1 EP1060853A1 (en) 2000-12-20
EP1060853B1 true EP1060853B1 (en) 2003-11-12

Family

ID=8240313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990201923 Expired - Lifetime EP1060853B1 (en) 1999-06-16 1999-06-16 Cement mixer with compact rotating mechanism on swivel-bucket arm

Country Status (3)

Country Link
EP (1) EP1060853B1 (es)
DE (1) DE69912751D1 (es)
ES (1) ES2210964T3 (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20020413A1 (it) * 2002-06-28 2003-12-29 Itla S P A Dispositivo a betoniera silenziata e metodo per la preparazione di calcestruzzo
PT102955A (pt) * 2003-05-19 2004-11-30 Simoes E Rodrigues Lda Redutor de transmissao com aplicacao
CN108466361A (zh) * 2018-02-02 2018-08-31 李明科 一种高效的混凝土搅拌机
CN108943391A (zh) * 2018-07-19 2018-12-07 四川双利新材料有限公司 基于双搅拌轴提效的水泥搅拌机
CN111070415B (zh) * 2020-01-02 2021-05-11 崔俊峰 一种水利工程施工装置及其使用方法
CN111152360B (zh) * 2020-02-26 2020-09-29 北京国建众联工程材料技术有限公司 一种混凝土批量混合搅拌设备
CN114274356B (zh) * 2021-12-30 2024-04-02 潍坊昌大建设集团有限公司 一种建筑工地用混凝土搅拌设备
CN114986697A (zh) * 2022-04-24 2022-09-02 浙大城市学院 一种适用于水泥基材料试验的智能搅拌装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1259756B (de) * 1963-01-08 1968-01-25 Josef Binder Betonmischer
IT221997Z2 (it) * 1991-11-05 1994-12-29 San Marco International Srl Betoniera con corona dentata in piu' parti

Also Published As

Publication number Publication date
EP1060853A1 (en) 2000-12-20
DE69912751D1 (de) 2003-12-18
ES2210964T3 (es) 2004-07-01

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