EP0374681A1 - Mélangeur monté sur véhicule - Google Patents

Mélangeur monté sur véhicule Download PDF

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Publication number
EP0374681A1
EP0374681A1 EP89122865A EP89122865A EP0374681A1 EP 0374681 A1 EP0374681 A1 EP 0374681A1 EP 89122865 A EP89122865 A EP 89122865A EP 89122865 A EP89122865 A EP 89122865A EP 0374681 A1 EP0374681 A1 EP 0374681A1
Authority
EP
European Patent Office
Prior art keywords
cover
mixing drum
loading
mixer according
vehicle
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.)
Withdrawn
Application number
EP89122865A
Other languages
German (de)
English (en)
Inventor
Wilfried Schreyer
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.)
Stetter GmbH
Original Assignee
Stetter 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6369410&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0374681(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Stetter GmbH filed Critical Stetter GmbH
Publication of EP0374681A1 publication Critical patent/EP0374681A1/fr
Withdrawn legal-status Critical Current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
    • B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
    • B28C5/4203—Details; Accessories
    • B28C5/4234—Charge or discharge systems therefor
    • B28C5/4237—Charging, e.g. hoppers

Definitions

  • the invention relates to a vehicle mixer with a motor-driven mixing drum rotatably mounted on a vehicle frame, which has a single circular rear opening, which is closed by a flap, on the outside of which a loading funnel is attached, which has an upper inlet opening and an outlet chute that the flap enforced, the flap and the hopper form a structural unit, and with a support frame which is attached to the rear end of the vehicle frame and above the mixing drum has a pivot bearing for the structural unit, on which an adjusting member engages to pivot the structural unit.
  • US-A-2,338,820 shows such a concrete mixer.
  • the mixing drum is rotated in one direction during the loading process and during transport.
  • the assembly consisting of the flap and the hopper is pivoted so that the rear opening of the mixing drum is open.
  • the concrete is emptied by turning the mixing drum in the opposite direction.
  • the inlet opening of the hopper is always open, so that rainwater can get through the funnel into the mixing drum, which is not only for dry ones Concrete mixtures is harmful, but also changes the water-cement ratio in an uncontrolled manner with aqueous concrete mixtures.
  • the known vehicle mixer is also not suitable for use in the chemical industry, since vapors and gases formed in the mixing drum can escape through the feed hopper.
  • a different type of concrete mixer is known from DE-A-36 10 095, in which the rear opening of the mixing drum can be closed by means of an end cover which rotates with the mixing drum.
  • the lid can be swiveled out to unload the mixing drum.
  • an additional filling opening is provided on the drum circumference, which can be closed by means of a lid.
  • a feed hopper is missing here.
  • the lid requires careful sealing, which requires prior cleaning of the sealing surfaces, because during the rotation of the mixing drum there is a high static pressure on the cover when it is in the lower drum area. In practical use, it will not be possible to prevent concrete from escaping due to poor sealing of the cover.
  • the object of the invention is to design a vehicle mixer of the type mentioned at the outset so that even dry concrete mixtures can be transported in rainy weather without uncontrolled water access into the mixing drum being possible. Furthermore, the mixing drum should be protected from the smallest quantities of the mix being released during the journey.
  • a covering device is provided for completely covering the inlet opening of the loading funnel, which is arranged at least partially to move away from the area of the inlet opening of the loading funnel for loading the mixing drum.
  • the invention also enables the arrangement of an adjustment drive for the cover device, so that remote operation for opening and closing the inlet opening of the loading funnel is possible, which is also ruled out in the second prior art. The driver then no longer has to climb up to the filling opening before and after each loading operation in order to have to remove and reinsert the lid, which is necessarily heavy there.
  • the field of application of the mixer is significantly expanded.
  • the mixer can also be used to transport chemical substances that are constantly in motion, since gases can no longer escape due to the hermetic seal of the unit consisting of the mixing drum and feed hopper. A negative pressure can then also be maintained in the mixing drum.
  • the further subclaims contain configurations of the invention which relate to the arrangement, design, actuation and sealing of the cover of the loading funnel.
  • a vehicle mixer 10 has a chassis 12, on which a mixing drum 14 with rearward and Axially inclined axis is rotatably mounted.
  • the mixing drum 14 can be driven in both directions by means of a drive motor arranged on the front end face of the mixing drum 14.
  • a support frame 16 is fastened on the rear of the vehicle frame 12, on which a swivel bearing 18 for a structural unit 20 is provided above the mixing drum 14, which has a flap 22 and a loading hopper 24.
  • the flap 22 closes the rear opening 26 of the mixing drum 14 by means of an annular seal 36 which is fastened to an annular flange 34 of the flap 22 and slides on a drum flange 28 when the mixing drum 14 rotates about the axis 32.
  • the bottom 30 of the hopper 24 forms at the lower end together with the side walls a trough-shaped slide which passes through the flap 22.
  • the feed hopper 24 and the flap 22 are supported on a cross strut 42 of the support frame 16 by means of a support foot 38 and an attenuator 40, so that the seal 36 is relieved.
  • An adjusting cylinder 44 serves to open the flap 22.
  • the upper edge of the funnel 24 lies in an approximately horizontal plane and delimits an inlet opening 48 which is closed by a cover 46 of a cover device 50.
  • the lid 46 has at its outer edge on the bottom a circumferentially closed seal 52 which rests on the edge 54 of the hopper 24. Seen in the direction of travel the cover 46 has, near its front edge, a laterally projecting arm 56 which leads to a swivel bearing 58 with a vertical axis which is arranged laterally next to the funnel 24 and is supported by means of a tab welded to the funnel side wall.
  • the pivot bearing 58 consists of a base sleeve 60, in which a lifting pin 62 is slidably mounted, which carries at the lower end a piston 64 which slides in a cylinder bore of the base sleeve 60 and is biased in the downward direction by a spring. Compressed air can be fed into a cylinder head 66 in order to raise the lifting pin 62 by approximately 10 cm.
  • a guide sleeve 70 which is welded to the arm 56 of the cover 46, rests on a flange 68 of the lifting pin 62.
  • the guide sleeve 70 has an actuating lever 72 on which the piston rod of a double-acting compressed air cylinder 74 engages, which in turn is articulated on a tab 76 of the hopper 24.
  • air is first introduced into the cylinder head 66 in order to lift the seal 52 of the cover 46 from the funnel edge 54, after which the compressed air is fed to the adjusting cylinder 74 in order to lift the cover 46 forward by about 90 ° the mixing drum 14 in the 46 'in FIG. 4 to pivot shown open position.
  • FIG. 6 shows a simplified pivot bearing 58 'in which none Hub of the cover 46 takes place.
  • the seal 52 consists of a closed hollow profile, in the annular chamber 80 of which a hose 78 opens, which is inflated to activate the seal 52 with compressed air. Before the cover 46 is pivoted, the seal 52 is vented, whereby it comes free from the funnel edge 54, after which the cover 46 can be pivoted largely without friction.
  • the contact surfaces of the ground sleeve 60 and the guide sleeve 70 are not designed as planes but as screw surfaces 82 with different pitch sections.
  • an initial angular section of approximately 10 ° there is a large slope, so that a ramp is formed here on which the guide sleeve 70 is raised by 10 mm to 15 mm during an angle of rotation of approximately 10 °.
  • the subsequent angle of rotation of about 80 ° there is at most a slight slope of maximum 5 mm.
  • This design also serves to reduce the abrasion between the seal 52 and the funnel edge 54 during the opening and closing of the cover 46.
  • Figures 10 and 11 illustrate a rectangular horizontal guide frame 92, the rear half of which surrounds the hopper 24 approximately at the level of its inlet opening.
  • the longitudinal legs of the guide frame 92 are designed as raceways for guide rollers 94 which are mounted on the cover 46.
  • the adjusting cylinder 74 is fastened to the front cross strut of the guide frame 92 and its piston rod engages the cover 46.
  • the guide frame 92 is twice as long as the lid 46, so that the latter exposes the filling opening in the forward-pulled position 46 '.
  • the running surfaces for the rollers 94 have end-side ramp sections 96, so that the last section of the closing movement of the cover 46 is accompanied by a downward closing stroke.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
EP89122865A 1988-12-17 1989-12-12 Mélangeur monté sur véhicule Withdrawn EP0374681A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3842542 1988-12-17
DE3842542 1988-12-17

Publications (1)

Publication Number Publication Date
EP0374681A1 true EP0374681A1 (fr) 1990-06-27

Family

ID=6369410

Family Applications (2)

Application Number Title Priority Date Filing Date
EP89122866A Expired - Lifetime EP0374682B2 (fr) 1988-12-17 1989-12-12 Malaxeur de béton pour camions
EP89122865A Withdrawn EP0374681A1 (fr) 1988-12-17 1989-12-12 Mélangeur monté sur véhicule

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP89122866A Expired - Lifetime EP0374682B2 (fr) 1988-12-17 1989-12-12 Malaxeur de béton pour camions

Country Status (2)

Country Link
EP (2) EP0374682B2 (fr)
DE (1) DE58900325D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9416517U1 (de) * 1994-10-13 1995-01-12 Liebherr-Mischtechnik Gmbh, 88427 Bad Schussenried Fahrmischer
EP0642900A1 (fr) * 1993-05-05 1995-03-15 Stetter Gmbh Mélangeur monté sur véhicule pour mélanges aptes à couler comme du béton
CN105666699A (zh) * 2016-03-08 2016-06-15 莱州亚通重型装备有限公司 一种混凝土搅拌车的罐体出料口密封装置
CN113967977A (zh) * 2021-10-26 2022-01-25 福建晋江市山水鞋材有限公司 一种eva鞋材混料设备及混料方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9011400U1 (de) * 1990-08-04 1990-10-11 Stetter Gmbh, 8940 Memmingen Fahrzeugmischer
DE4431501B4 (de) * 1994-09-03 2004-09-16 Stetter Gmbh Fahrzeugmischer für fließfähige Medien, wie Beton
DE102017104459A1 (de) 2017-03-03 2018-09-06 Putzmeister Engineering Gmbh Einstellbare Verschlusseinheit für Mischertrommel-Öffnung
CN109986698B (zh) * 2019-05-08 2024-04-19 盛镝 一种旋转桶自密封的螺旋式回转密封装置

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1895169A (en) * 1930-03-14 1933-01-24 Jaeger Machine Co Closure
US1918205A (en) * 1930-05-17 1933-07-11 Chain Belt Co Rear closure for truck mixers
US2270628A (en) * 1941-04-02 1942-01-20 James H Fitzgerald Concrete mixer
US2308901A (en) * 1941-06-05 1943-01-19 Chain Belt Co Concrete mixer
US2316137A (en) * 1941-09-22 1943-04-06 Jaeger Machine Co Truck mixer
US2454940A (en) * 1946-07-27 1948-11-30 T L Smith Co Seal for chutes of concrete mixers
DE805855C (de) * 1943-07-10 1951-05-31 Jaeger Machine Co Abdichtung an einer Betonmischmaschine
FR2299905A1 (fr) * 1975-02-06 1976-09-03 Papenmeier Kg Maschf Guenther Dispositif melangeur a deux recipients de melange
DE8520089U1 (de) * 1985-07-11 1985-08-22 Dr. Herfeld GmbH & Co KG, 5982 Neuenrade Mischer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB279339A (en) * 1927-02-17 1927-10-27 Jacob Knappich Improvements in or relating to vehicles for conveying loose materials
AT112225B (de) * 1927-02-17 1929-02-11 Jacob Knappich Kraftfahrzeug für Schüttgut, insbesondere für Müllabfuhr.

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1895169A (en) * 1930-03-14 1933-01-24 Jaeger Machine Co Closure
US1918205A (en) * 1930-05-17 1933-07-11 Chain Belt Co Rear closure for truck mixers
US2270628A (en) * 1941-04-02 1942-01-20 James H Fitzgerald Concrete mixer
US2308901A (en) * 1941-06-05 1943-01-19 Chain Belt Co Concrete mixer
US2316137A (en) * 1941-09-22 1943-04-06 Jaeger Machine Co Truck mixer
DE805855C (de) * 1943-07-10 1951-05-31 Jaeger Machine Co Abdichtung an einer Betonmischmaschine
US2454940A (en) * 1946-07-27 1948-11-30 T L Smith Co Seal for chutes of concrete mixers
FR2299905A1 (fr) * 1975-02-06 1976-09-03 Papenmeier Kg Maschf Guenther Dispositif melangeur a deux recipients de melange
DE8520089U1 (de) * 1985-07-11 1985-08-22 Dr. Herfeld GmbH & Co KG, 5982 Neuenrade Mischer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0642900A1 (fr) * 1993-05-05 1995-03-15 Stetter Gmbh Mélangeur monté sur véhicule pour mélanges aptes à couler comme du béton
DE9416517U1 (de) * 1994-10-13 1995-01-12 Liebherr-Mischtechnik Gmbh, 88427 Bad Schussenried Fahrmischer
CN105666699A (zh) * 2016-03-08 2016-06-15 莱州亚通重型装备有限公司 一种混凝土搅拌车的罐体出料口密封装置
CN105666699B (zh) * 2016-03-08 2018-04-20 莱州亚通重型装备有限公司 一种混凝土搅拌车的罐体出料口密封装置
CN113967977A (zh) * 2021-10-26 2022-01-25 福建晋江市山水鞋材有限公司 一种eva鞋材混料设备及混料方法
CN113967977B (zh) * 2021-10-26 2024-05-14 福建晋江市山水鞋材有限公司 一种eva鞋材混料设备及混料方法

Also Published As

Publication number Publication date
EP0374682B1 (fr) 1991-09-25
EP0374682A1 (fr) 1990-06-27
DE58900325D1 (de) 1991-10-31
EP0374682B2 (fr) 1994-05-25

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