WO2012055161A1 - 搅拌筒进出料口回转密封的混凝土搅拌运输车 - Google Patents

搅拌筒进出料口回转密封的混凝土搅拌运输车 Download PDF

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Publication number
WO2012055161A1
WO2012055161A1 PCT/CN2011/001752 CN2011001752W WO2012055161A1 WO 2012055161 A1 WO2012055161 A1 WO 2012055161A1 CN 2011001752 W CN2011001752 W CN 2011001752W WO 2012055161 A1 WO2012055161 A1 WO 2012055161A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing
rotary
mixing drum
outlet
inlet
Prior art date
Application number
PCT/CN2011/001752
Other languages
English (en)
French (fr)
Inventor
盛富春
Original Assignee
烟台盛利达工程技术有限公司
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
Priority to BR112013009942A priority Critical patent/BR112013009942A2/pt
Priority to EP11835435.6A priority patent/EP2634044B1/en
Priority to JP2013535242A priority patent/JP5841606B2/ja
Priority to PL11835435T priority patent/PL2634044T3/pl
Application filed by 烟台盛利达工程技术有限公司 filed Critical 烟台盛利达工程技术有限公司
Priority to CA2811341A priority patent/CA2811341C/en
Priority to KR1020137006218A priority patent/KR101517195B1/ko
Priority to AP2013006796A priority patent/AP3568A/xx
Priority to ES11835435T priority patent/ES2804462T3/es
Priority to US13/825,922 priority patent/US9162370B2/en
Priority to AU2011320190A priority patent/AU2011320190B2/en
Priority to MX2013004264A priority patent/MX2013004264A/es
Priority to NZ608471A priority patent/NZ608471A/en
Priority to EA201390285A priority patent/EA022466B1/ru
Publication of WO2012055161A1 publication Critical patent/WO2012055161A1/zh
Priority to ZA2013/01930A priority patent/ZA201301930B/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
    • B60P3/16—Vehicles adapted to transport, to carry or to comprise special loads or objects for carrying mixed concrete, e.g. having rotatable drums
    • 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
    • B28C5/0806—Details; Accessories
    • B28C5/0856—Supporting frames or structures, e.g. supporting wheels
    • 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
    • B28C5/20—Mixing in containers to which motion is imparted to effect the mixing rotating about a horizontal or substantially horizontal axis during mixing, e.g. without independent stirrers
    • B28C5/24—Mixing in containers to which motion is imparted to effect the mixing rotating about a horizontal or substantially horizontal axis during mixing, e.g. without independent stirrers with driven stirrers
    • 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
    • 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
    • B28C5/4262—Closures; Sealing mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/16—Discharge means, e.g. with intermediate storage of fresh concrete
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • 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 present invention relates to a new technology for realizing large port swivel connection and rotary seal in a rotating state, and more particularly to a concrete mixer truck which uses the technology to rotate the inlet and outlet of a mixing drum.
  • mixer truck with a horizontally arranged mixing drum.
  • the feed port of the mixer truck rotates together with the mixer drum.
  • the mixer drum cannot rotate, and the continuous agitation of the concrete cannot be maintained.
  • the mixing drum cannot rotate when feeding, and the concrete will accumulate near the feeding port and cannot be fed normally.
  • the port rotation closure in the rotating state of the mixing drum cannot be achieved.
  • the mixing drum of the concrete mixer truck widely used at home and abroad is still inclined at a large angle (for example, a tilt angle of 15 degrees) and is openly arranged.
  • the main problems with this arrangement are as follows:
  • the angle is inclined at a large angle, the height is too high, it is difficult to set the incubator, resulting in the mixing drum always in the open environment, the mixing drum is not well insulated, the temperature of the hot and cold in winter and summer exceeds the standard, resulting in the quality of the concrete is unqualified.
  • the mixing drum is in an open state, and the hot and cold air and rain and snow enter the mixing drum, which has an adverse effect on the amount of concrete shield.
  • the structure is aging, and the degree of automation is low.
  • the invention aims to provide a concrete mixer truck with a rotary seal of the mixing drum into and out of the material discharge port.
  • the technical problem to be solved is that the first, the rotary cylinder has a reliable rotary sealing problem at the inlet and outlet ports.
  • second, A small angle or horizontal arrangement of the mixing drum is achieved.
  • the utility model relates to a concrete mixer truck with a rotary sealing inlet and outlet of a mixing drum, comprising a sub-frame and a mixing drum mounted on the sub-frame and having a rotary driving mechanism, wherein the inlet and outlet ports of the mixing drum are located at the rear end of the mixing drum.
  • the utility model further comprises: a rotary inner cylinder, a rotary support body and a sealed end cover; the sealed end cover has a feeding hopper and a discharge door; the sealed end cover is connected with the rotary support body;
  • the cylinder is connected to the rear end of the inlet and outlet of the mixing drum along the inlet and outlet of the mixing drum;
  • the rotating inner cylinder rotatably supports the rotating support; and at least one heavy sealing belt is mounted on the rotating inner cylinder
  • the rear end surface of the last end sealing tape is in close contact with the front end surface of the sealing end cover; the support body is mounted on the sub-frame.
  • the rotary support body comprises a rotary flange support and a fixed outer cylinder disposed at a rear end of the rotary flange support, and a rear end of the fixed outer cylinder is connected to the sealed end cover; an outer wall of the rotating inner cylinder and a fixed outer cylinder An annular sealing cavity is formed between the inner wall, the rear end surface of the rotary flange holder and the front end surface of the sealing end cover; the sealing band is located in the annular sealing cavity.
  • the rotating inner cylinder is connected to the inlet and outlet of the mixing drum through a rotary flange.
  • the rear end of the fixed outer cylinder has a fixing flange; the sealing end cover is connected to the rear end of the fixed outer cylinder through the fixing flange.
  • a fixing base is disposed on the rotating support body, and two ends of the sealing tape are connected or contacted on the fixing seat; a fixing hole is arranged on the fixing seat, and a fixing rod is fixed in the fixing hole, and the front end of the fixing rod is fixed in the rotation Flange support.
  • the fixing seat is provided with a lubricant container for lubricating the outer wall of the rotating inner cylinder and the sealing belt; the lubricant outlet of the lubricant container is located above the rotating inner cylinder.
  • the rotary flange bearing and the rotary flange are in contact by sliding friction or rolling friction.
  • a rotary sealing bracket is mounted on the sub-frame, and a fixing bracket is fixedly mounted on the rotating sealing bracket, and the fixing bracket is fixedly connected with the rotating flange bearing by a bolt, so that the outer circumferential surface of the rotating flange is
  • the rotating flange supports are not in contact with each other; a spring is mounted on the bolt, and the rear end of the spring is pressed against the front end surface of the fixing frame.
  • annular pressure belt which is expandable in a water-filled or inflated state and located outside the sealing belt; the expanded annular pressure belt presses the sealing belt to make the sealing belt in close contact with the outer wall of the rotating inner cylinder;
  • the rear annular pressure band fills the annular sealing cavity outside the sealing band.
  • the sealing tape has a water-filling or gas-filling cavity capable of expanding the sealing tape; the expanded sealing tape fills the annular sealing cavity; and the inner side of the sealing tape has a wear-resistant layer.
  • the two ends of the sealing tape are connected to the fixing seat, and the fixing seat is provided with a fixing hole, and a fixing rod is installed in the fixing hole, and the front end of the fixing rod is fixed on the rotating flange bearing.
  • the fixing seat is provided with a lubricant container for lubricating the outer wall of the rotating inner cylinder and the sealing belt; the lubricant outlet of the lubricant container is located above the rotating inner cylinder.
  • An incubator covering the mixing drum is arranged on the sub-frame; a heating device connected to the tail pipe of the transport vehicle is installed in the incubator; and a refrigerating device is also installed in the incubator.
  • a sunshade covering the mixer drum is disposed on the sub-frame.
  • a feed door is mounted on the feed hopper, and an atomizing water device is installed on the inner wall of the feed door.
  • the rotary connection between the mixing drum and the rotary sealing mechanism is realized, which satisfies the rotation state of the mixing drum at the time of feeding, realizes the small angle or horizontal arrangement of the mixing drum, reduces the center of gravity of the truck, and improves the center of gravity of the truck.
  • the driving safety of the concrete mixer truck and the problem of concrete delamination are solved, and the quality of the concrete and the quality of the building are improved.
  • a spring is mounted on the bolt between the fixing frame and the rotating flange support, and the rear end of the spring is pressed against the front end surface of the fixing frame, so that the sealing end cover is always in close contact with the sealing tape but is not crushed, and at the same time It has a fixed function on the rotary sealing mechanism.
  • the suspension connection between the rotary sealing bracket and the rotary support body makes the operation of the mixing drum more stable.
  • the mixing drum is always closed, which solves the problem that the hot and cold air and rain and snow enter the mixing drum, which adversely affects the quality of the concrete.
  • Figure 1 is a schematic view of the structure of the present invention. In order to clearly show the invention, Figure 1 uses a disconnection In the manner, the front portion of the concrete mixer truck is omitted, and the omitted portion includes the mixer drum rotation drive mechanism and the vehicle chassis.
  • Figure 2 is a schematic view showing the structure of the first sealing method of the annular sealing cavity.
  • Figure 3 is a schematic view showing the structure of the second sealing method of the annular sealing cavity.
  • Figure 4 is a schematic view showing the structure of the sealing band fixing seat and the sealing band lubricating mechanism of the present invention.
  • Figure 5 is a schematic view showing the structure of the spring pressing mechanism of the present invention.
  • the present invention includes a sub-frame 1 and a mixer drum 2 mounted on the sub-frame 1 and having a rotary drive mechanism, wherein the inlet and outlet ports of the mixer drum 2 are located at the rear end of the mixer drum 2.
  • a discharge belt mechanism 5 is attached to the sub-frame 1.
  • a discharge chute mechanism is attached to the sub-frame 1.
  • a pumping discharge mechanism is mounted on the sub-frame 1.
  • a rotary seal bracket 3 is mounted on the sub-frame 1, and a swing support 6 is mounted on the swing seal bracket 3 by means of a suspension connection.
  • the suspension connection method includes an articulated manner, an elastic body (e.g., a spring).
  • a mixer drum roller 4 is also fixedly mounted on the rotary seal holder 3.
  • the rotary support body 6 includes a rotary flange support 6-1 and a fixed outer cylinder 6-2 disposed at the rear end of the rotary flange support 6-1 to fix the rear end of the outer cylinder 6-2.
  • a fixing flange 6-3 With a fixing flange 6-3, a sealing end cover 7 with a feeding hopper 9 and a discharging door 8 is connected at the rear end of the fixing flange 6-3; a rotating flange 10 is fixedly connected at the rear end of the mixing drum 2, and is rotated
  • a rotating inner cylinder 15 is provided at the rear end of the flange 10.
  • An annular seal cavity is formed between the outer wall of the rotary inner cylinder 15, the inner wall of the fixed outer cylinder 6-2, the rear end surface of the rotary flange mount 6-1, and the front end surface of the seal end cover 7.
  • the rear end of the rotary inner cylinder 15 is adjacent to the seal end cover 7 with a slit; the slit is generally within 5 mm, and the slit is provided for the purpose of avoiding friction between the rear end of the rotary inner cylinder 15 and the seal end cover 7.
  • a plurality of sealing tapes 13 are disposed in the annular rotary sealing chamber; the rear end surface of the final sealing tape 13 is in close contact with the front end surface of the sealing end cover 7.
  • the sealing method of the annular sealing cavity includes the following two types:
  • the first type is as shown in Fig. 2: an annular pressure belt 14 which is expandable in a water-filled or inflated state and which is located outside the sealing strip 13 is provided in the annular sealing chamber; the expanded annular pressure belt 14 presses the sealing strip 13 so that The sealing strip 13 is in intimate contact with the outer wall of the rotating inner cylinder 15; the expanded annular pressure belt 14 fills the annular sealing cavity outside the sealing strip 13.
  • the second type is as shown in FIG. 3: the sealing tape 13 is provided with a water-filling or gas-filling cavity 13-1 capable of expanding the sealing tape 13; the expanded sealing tape 13 is filled with the annular sealing cavity; the sealing tape 13 The inner side has a wear layer 13-2.
  • the annular pressure belt 14 or the sealing belt 13 respectively has a water-filled (gas) nozzle from the cylinder of the fixed outer cylinder 6-2. The wall is worn out.
  • both ends of the sealing tape 13 are connected to the fixing base 16, and the fixing seat 16 is provided with a fixing hole, and a fixing rod 17 is mounted in the fixing hole, and the front end of the fixing rod 17 is fixed in the rotation method.
  • Blue support 6-1 As shown in FIG. 4, both ends of the sealing tape 13 are connected to the fixing base 16, and the fixing seat 16 is provided with a fixing hole, and a fixing rod 17 is mounted in the fixing hole, and the front end of the fixing rod 17 is fixed in the rotation method.
  • the fixing seat 16 is provided with a lubricant container for lubricating the outer wall of the rotating inner cylinder 15 and the sealing belt 13; the lubricant outlet of the lubricant container is located above the rotating inner cylinder 15.
  • the fixing seat 16 functions to first fix the both ends of the sealing tape 13 to prevent the sealing tape 13 from rotating with the rotating inner cylinder 15. Second, the fixing seat 16 is provided with a cavity for containing a lubricant. When the lubricating mechanism is employed, a port for fitting the fixing base 16 is provided at the upper end of the fixed outer cylinder 6-2.
  • An incubator covering the mixing drum 2 may be disposed on the sub-frame 1; a heating device connected to the exhaust pipe of the transport vehicle may be installed in the incubator; and a refrigerating device may be installed in the incubator.
  • the sub-frame 1 is provided with an awning that covers the mixing drum 2 above.
  • Sliding friction or rolling friction can be used between the swivel flange bearing 6-1 and the swivel flange 10.
  • the rolling friction method is used to reduce the frictional resistance between the rotating flange bearing 6-1 and the rotating flange, and the specific implementation is, for example, installation between the rotating flange bearing 6-1 and the rotating flange 10. Ball or roller.
  • a feed door 9-1 is mounted on the feed hopper 9, and an atomizing water device is mounted on the inner wall of the feed door 9-1.
  • the atomizing water device is sprayed into the mixing drum to form a high-humidity atmosphere in a space other than the concrete in the mixing drum, and the concrete moisture is reduced without affecting the concrete shield.
  • a fixing frame 3-1 is fixedly mounted on the rotary sealing bracket 3, and the fixing frame is fixed.
  • the present invention can provide a spiral blade on the inner wall of the rotary inner cylinder 15.
  • the technical solution of the present invention is equally applicable if the inlet and outlet ports of the mixer drum are located at the front end of the mixer drum, i.e., the concrete inlet and outlet mechanism is located at the front end of the mixer drum.
  • the invention realizes the rotary connection of the mixing drum and the rotary sealing mechanism through the reliable rotary sealing, and satisfies the rotation state of the mixing drum at the time of feeding, realizes the small angle or horizontal arrangement of the mixing drum, reduces the center of gravity of the transportation vehicle, and improves the weight.
  • the driving safety of the concrete mixer truck solves the problem of concrete delamination and improves the quality of the concrete and the quality of the building.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Transportation (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Description

搅拌筒进出料口回转密封的混凝土搅拌运输车 技术领域
本发明涉及一种转动状态下实现大型端口回转连接和回转密封的新技 术， 特别涉及一种使用了该项技术的搅拌筒进出料口回转密封的混凝土搅拌 运输车。
背景技术
由于受到较少的关注， 大型回转设备的回转密封技术近年没有太大的发 展。 现有的回转密封技术很难适应混凝土运输车的搅拌筒在恶劣工作环境、 转动状态下的端口回转密封。
个别报道提及水平布置搅拌筒的搅拌运输车， 这种搅拌运输车的进料口 是和搅拌筒是一起转动的， 在加料时， 搅拌筒无法转动， 无法保持对混凝土 的连续搅动， 因而不能保证混凝土的质量； 另外，搅拌筒在加料时无法转动， 混凝土会堆积在加料口附近， 无法正常加料。
根据现有技术无法实现搅拌筒转动状态下的端口回转封闭。 目前国内外 广泛使用的混凝土搅拌运输车的搅拌筒仍是较大角度倾斜（比如 15 度倾斜 角）且敞口布置的。 这种布置方式存在的主要问题如下：
1 )、 较大角度倾斜布置导致重心较高， 车辆行驶不安全， 驾驶困难， 极 易发生翻车事故。 这种车辆所引发的交通事故经常发生， 每年都有大量的报 道。
2 )、 较大角度倾斜布置导致搅拌筒内混凝土的分层， 这种现象随着搅拌 时间的延长而加剧 , 造成出料不均勾和浇注后混凝土分层。
3 )、 较大角度倾斜布置， 高度过高， 很难设置保温箱， 导致搅拌筒始终 处于露天的环境， 搅拌筒保温不好， 冬、 夏季由于冷热的温度超标， 导致混 凝土的质量不合格。
4 )、 由于搅拌筒处于敞口状态且没有保温设施， 在太阳的照射下， 搅拌 筒的导热旋转造成 "炒锅" 效应， 运输过程混凝土中的水分蒸发很快， 导致 混凝土浇注时需要二次加水， 引起混凝土质量下降甚至失效， 罐内停留时间 和运输距离受到严格的限制。
5 )、 由千搅拌筒处于敞口状态， 冷热空气和雨雪进入搅拌筒内， 对混凝 土盾量造成不良影响。
6 )、 结构老化， 自动化程度低。
发明的公开
本发明旨在提供一种搅拌筒进出料口回转密封的混凝土搅拌运输车， 所 要解决的技术问题是， 第一、搅拌筒进出料端口可靠的回转密封问题。第二、 实现搅拌筒的小角度或者水平布置。 第三、 解决混凝土分层问题。 第四、 解 决混凝土的保温、 保湿问题。
一种搅拌筒进出料口回转密封的混凝土搅拌运输车， 包括副车架和安装 于副车架上并带有旋转驱动机构的搅拌筒， 其中搅拌筒的进出料端口位于搅 拌筒的后端， 其特征在于： 进一步包括旋转内筒、 回转支撑体、 密封端盖； 所述密封端盖具有进料斗、出料门；所述密封端盖与所述回转支撑体相连接； 所述旋转内筒沿着搅拌筒的进出料口而连接于搅拌筒的进出料口的后端； 所 述旋转内筒可旋转地支撑所述回转支撑体； 在所述旋转内筒上安装有至少一 重密封带， 其中最后端密封带的后端面与所述密封端盖的前端面紧密接触； 所述支撑体安装于所述副车架。
所述回转支撑体包括回转法兰支座和设置在回转法兰支座后端的固定外 筒， 固定外筒的后端连接所述密封端盖； 所述旋转内筒的外壁、 固定外筒的 内壁、 回转法兰支座的后端面以及密封端盖的前端面之间形成环形密封腔 体； 所述密封带位于所述环形密封腔体内。
所述旋转内筒通过回转法兰连接在搅拌筒的进出料口。
所述固定外筒的后端带有固定法兰； 所述密封端盖是通过该固定法兰连 接于所述固定外筒的后端。
在回转支撑体上设置有固定座， 密封带的两端连接或接触在固定座上； 在该固定座上设有固定孔， 在固定孔内安装有固定杆， 该固定杆的前端固定 在回转法兰支座上。
所述的固定座上设有用于润滑旋转内筒外壁以及密封带的润滑剂容器； 该润滑剂容器的润滑剂出口位于旋转内筒的上方。
所述回转法兰支座与回转法兰之间以滑动摩擦或滚动摩擦方式接触。 在副车架上安装有回转密封支架， 在所述回转密封支架上固定安装有固 定架， 该固定架通过螺栓与所述回转法兰支座固定连接， 使得所述回转法兰 的外周面与所述回转法兰支座之间不接触； 在螺栓上安装有弹簧， 该弹簧的 后端压在固定架的前端面上。
在环形密封腔体中设置有在充水或充气状态下可膨胀的、 位于密封带外 侧的环形压力带； 膨胀后的环形压力带压紧密封带使密封带与旋转内筒外壁 紧密接触； 膨胀后的环形压力带充满密封带之外的环形密封腔体。
所述的密封带带有能够使密封带膨胀的充水或充气腔体； 膨胀后的密封 带充满所述的环形密封腔体； 密封带的内侧面带有耐磨层。 密封带的两端连接在固定座上， 在该固定座上设有固定孔， 在固定孔内 安装有固定杆， 该固定杆的前端固定在回转法兰支座上。
所述的固定座上设有用于润滑旋转内筒外壁以及密封带的润滑剂容器； 该润滑剂容器的润滑剂出口位于旋转内筒的上方。
在副车架上设置有罩住搅拌筒的保温箱； 在保温箱内安装有与运输车尾 气管连接的加热装置； 在保温箱内还安装有制冷装置。
在副车架上设置有上方罩住搅拌筒的遮阳棚。
在进料斗上安装有进料门 , 在进料门的内壁上安装有雾化水装置。
本发明的积极效果在于：
第一、通过可靠的回转密封， 实现了搅拌筒与回转密封机构的回转连接， 满足了加料时搅拌筒始终处于旋转状态， 实现了搅拌筒的小角度或者水平布 置， 降低了运输车重心， 提高了混凝土搅拌运输车的行驶安全性， 并解决了 混凝土分层问题， 提高了混凝土质量和建筑质量。
第二、 通过搅拌筒进出料端口的回转密封， 以及雾化加湿措施， 减少或 者避免了搅拌筒内混凝土水分蒸发， 解决了混凝土的保湿问题。 同时解决了 因敞口运输造成的跑料以及冷热空气进入到搅拌筒内的问题。
第三、通过设置保温箱或者遮阳棚， 解决了混凝土温度控制、 防晒问题。 第四、 进出料更容易， 效率更高。
第五、 为搅拌运输车的大型化及车载混凝土搅拌站奠定了技术基础。 第六、 固定架与回转法兰支座之间的螺栓上安装有弹簧， 该弹簧的后端 压在固定架的前端面上， 始终使密封端盖与密封带紧密接触但不压死， 同时 对回转密封机构起到固定作用。
第七、 回转密封支架与回转支撑体之间采用悬浮连接方式， 使得搅拌筒 的运行更加平稳。
第八、 在运输过程中， 搅拌筒始终处于关闭状态， 解决了冷热空气及雨 雪进入搅拌筒内， 对混凝土质量造成不良影响的问题。
第九、发明了密封带与旋转内筒的润滑技术， 减轻了摩擦，提高了寿命。 第十、 为提高混凝土搅拌运输车的自动化程度奠定了技术基础。
附图的简要说明
图 1是本发明的结构示意图。 为了清楚地显示本发明， 图 1采用了断开 方式， 省略了混凝土搅拌运输车的前部， 省略部分包括搅拌筒旋转驱动机构 和车辆底盘。
图 2是环形密封腔体第一种密封方式的结构示意图。
图 3是环形密封腔体第二种密封方式的结构示意图。
图 4是本发明密封带固定座及密封带润滑机构的结构示意图。
图 5是本发明弹簧压紧机构的结构示意图。
实现本发明的最佳方式
如图 1所示， 本发明包括副车架 1和安装于副车架 1上并带有旋转驱动 机构的搅拌筒 2， 其中搅拌筒 2的进出料端口位于搅拌筒 2的后端。 在副车 架 1上安装有出料用皮带机构 5。 或者， 在副车架 1上安装有出料用流槽机 构。 或者， 在副车架 1上安装有泵力出料机构。
在副车架 1上安装有回转密封支架 3 , 在回转密封支架 3上通过悬浮连 接方式安装有回转支撑体 6。所述的悬浮连接方式包括铰接方式、弹性体（比 如弹簧）方式。 在回转密封支架 3上还固定安装有搅拌筒托辊 4。
如图 2、 3所示， 回转支撑体 6包括回转法兰支座 6-1和设置在回转法兰 支座 6-1后端的固定外筒 6-2， 固定外筒 6-2的后端带有固定法兰 6-3， 固定 法兰 6-3后端连接有带进料斗 9、 出料门 8的密封端盖 7; 在搅拌筒 2的后端 固定连接有回转法兰 10, 回转法兰 10后端设置有旋转内筒 15。
所述旋转内筒 15的外壁、 固定外筒 6-2的内壁、 回转法兰支座 6-1的后 端面以及密封端盖 7的前端面之间形成环形密封腔体。
旋转内筒 15的后端与密封端盖 7靠近并带有缝隙； 该缝隙一般在 5mm 以内，设置该缝隙的目的是为了避免旋转内筒 15的后端与密封端盖 7之间的 摩擦。
在所述环形回转密封腔体内设置有一重以上密封带 13;最后端密封带 13 的后端面与密封端盖 7的前端面紧密接触。
环形密封腔体的密封方式包括以下两种：
第一种如图 2:在环形密封腔体中设置有在充水或充气状态下可膨胀的、 位于密封带 13外侧的环形压力带 14;膨胀后的环形压力带 14压紧密封带 13 使密封带 13与旋转内筒 15外壁紧密接触；膨胀后的环形压力带 14充满密封 带 13之外的环形密封腔体。
第二种如图 3: 所述的密封带 13带有能够使密封带 13膨胀的充水或充 气腔体 13-1 ; 膨胀后的密封带 13充满所述的环形密封腔体； 密封带 13的内 侧面带有耐磨层 13-2。
为了实现环形压力带 14或者密封带 13 的充水或充气， 环形压力带 14 或者密封带 13分别带有充水（气）嘴， 该充水（气）嘴从固定外筒 6-2的筒 壁穿出。
如图 4所示， 密封带 13的两端连接在固定座 16上， 在该固定座 16上 设有固定孔， 在固定孔内安装有固定杆 17, 该固定杆 17的前端固定在回转 法兰支座 6-1上。
所述的固定座 16上设有用于润滑旋转内筒 15外壁以及密封带 13的润 滑剂容器； 该润滑剂容器的润滑剂出口位于旋转内筒 15的上方。
固定座 16的作用是， 第一、 用于固定密封带 13的两端， 防止密封带 13 随旋转内筒 15转动。 第二、 固定座 16设有盛装润滑剂的腔体。 在采用该润 滑机构时， 在固定外筒 6-2的上端设置有用于镶嵌固定座 16的端口。
在副车架 1上可以设置有罩住搅拌筒 2的保温箱； 在保温箱内可以安装 有与运输车尾气管连接的加热装置； 在保温箱内还可以安装有制冷装置。 或 者， 在副车架 1上设置有上方罩住搅拌筒 2的遮阳棚。
回转法兰支座 6-1与回转法兰 10之间可以采用滑动摩擦方式或者滚动摩 擦方式。 其中， 采用滚动摩擦方式是为了减小回转法兰支座 6-1与回转法兰 之间的摩擦阻力， 具体实现方式比如， 在回转法兰支座 6-1与回转法兰 10之 间安装滚珠或者辊柱。
在进料斗 9上安装有进料门 9-1 ,在进料门 9-1的内壁上安装有雾化水装 置。 利用该雾化水装置向搅拌筒内喷雾， 在搅拌筒内混凝土之外的空间内形 成高湿度气氛， 在不影响混凝土盾量的前提下， 减少混凝土水分挥发。
如图 1、 图 5所示， 在回转密封支架 3上固定安装有固定架 3-1， 固定架
3-1通过螺栓 11与回转法兰支座 6-1固定连接； 在螺栓 11上安装有弹簧 12, 该弹簧 12的后端压在固定架 3-1的前端面上。这种设计的优点是， 始终使密 封端盖与密封带紧密接触但不压死， 同时对回转密封机构起到固定作用。
为了提高出料效率， 本发明可以在旋转内筒 15的内壁设置螺旋叶片。 如果搅拌筒的进出料端口位于搅拌筒的前端， 即混凝土进出料机构位于 搅拌筒的前端， 本发明的技术方案同样适用。
工业应用性
本发明通过可靠的回转密封，实现了搅拌筒与回转密封机构的回转连接， 满足了加料时搅拌筒始终处于旋转状态， 实现了搅拌筒的小角度或者水平布 置， 降低了运输车重心， 提高了混凝土搅拌运输车的行驶安全性， 并解决了 混凝土分层问题， 提高了混凝土质量和建筑质量。

Claims

权利 要求
1、一种搅拌筒进出料口回转密封的混凝土搅拌运输车， 包括副车架（1 ) 和安装于副车架（ 1 )上并带有旋转驱动机构的搅拌筒（ 2 )， 其中搅拌筒（ 2 ) 的进出料端口位于搅拌筒 （2) 的后端， 其特征在于：
进一步包括旋转内筒 （ 15 )、 回转支撑体（ 6 )和密封端盖 （ 7 );
所述密封端盖（7)具有进料斗 （9)、 出料门 （8); 该密封端盖（7)与 所述的回转支撑体（ 6 )相连接；
所述旋转内筒 （15) 沿着搅拌筒 （2) 的进出料口而连接于搅拌筒 （2) 的进出料口的后端； 所述旋转内筒（15)可旋转地支撑所述回转支撑体（6); 在所述旋转内筒（ 15 )上安装有至少一重密封带（ 13),其中最后端密封带（ 13) 的后端面与密封端盖 （7) 的前端面紧密接触；
所述回转支撑体（ 6 )安装于所述副车架（ 1 )。
2、 如权利要求 1所述的搅拌筒进出料口回转密封的混凝土搅拌运输车， 其特征在于： 所述的回转支撑体（6) 包括回转法兰支座（6-1)和设置在回 转法兰支座（6-1 )后端的固定外筒 （6-2)， 固定外筒 （6- 2) 的后端连接所 述的密封端盖 （7); 所述旋转内筒 （15) 的外壁、 固定外筒 （6-2) 的内壁、 回转法兰支座（6-1) 的后端面以及密封端盖 （7) 的前端面之间形成环形密 封腔体； 所述密封带 （13)位于所述环形密封腔体内。
3、 如权利要求 2所述的搅拌筒进出料口回转密封的混凝土搅拌运输车， 其特征在于： 所述旋转内筒（15)通过回转法兰（10)连接在搅拌筒（2)的 进出料口。
4、 如权利要求 2所述的搅拌筒进出料口回转密封的混凝土搅拌运输车， 其特征在于： 固定外筒 （6-2) 的后端带有固定法兰 （6-3); 密封端盖（7) 通过该固定法兰 （6-3)连接于固定外筒 （6-2) 的后端。
5、 如权利要求 2所述的搅拌筒进出料口回转密封的混凝土搅拌运输车， 其特征在于： 在环形密封腔体中设置有在充水或充气状态下可膨胀的、 位于 密封带（13)外侧的环形压力带（14); 膨胀后的环形压力带（I4)压紧密封 带 （13)使密封带 （13) 与旋转内筒 （15)外壁紧密接触； 膨胀后的环形压 力带 （14)充满密封带 （13)之外的环形密封腔体。
6、 如权利要求 2所述的搅拌筒进出料口回转密封的混凝土搅拌运输车， 其特征在于： 所述的密封带 （13) 带有能够使密封带 （13)膨胀的充水或充 气腔体（13-1 );膨胀后的密封带（13)充满所述的环形密封腔体；密封带（13) 的内侧面带有耐磨层（13-2)。
7、 如权利要求 2所述的搅拌筒进出料口回转密封的混凝土搅拌运输车， 其特征在于： 在所述的回转支撑体（6)上进一步设置有固定座（16)， 密封 带 （13) 的两端连接或接触在固定座（16)上； 在该固定座（16)上设有固 定孔， 在固定孔内安装有固定扞（17)， 该固定杆（17)的前端固定在回转法 兰支座 (6-1)上。
8、 如权利要求 7所述的搅拌筒进出料口回转密封的混凝土搅拌运输车， 其特征在于： 所述的固定座（16)上设有用于润滑旋转内筒 （15)外壁以及 密封带（13)的润滑剂容器； 该润滑剂容器的润滑剂出口位于旋转内筒（15) 的上方。
9、 如权利要求 3所述的搅拌筒进出料口回转密封的混凝土搅拌运输车， 其特征在于： 回转法兰支座（6-1)与回转法兰（10)之间以滚动摩擦或滑动 摩擦方式接触。
10、如权利要求 3所述的搅拌筒进出料口回转密封的混凝土搅拌运输车， 其特征在于：在副车架（ 1 )上安装有回转密封支架（ 3 ),在回转密封支架（ 3 ) 上固定安装有固定架（ 3-1 )， 该固定架（ 3-1 )通过螺栓（ 11 )与回转法兰支 座（6-1)固定连接， 使得所述的回转法兰（10)的外周面与所述的回转法兰 支座（ 6-1 )之间不接触； 在螺栓（ 11 )上安装有弹簧（ 12 ), 该弹簧（ 12 ) 的后端压在固定架（3-1) 的前端面上。
PCT/CN2011/001752 2010-10-30 2011-10-21 搅拌筒进出料口回转密封的混凝土搅拌运输车 WO2012055161A1 (zh)

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