WO2019127952A1 - 一种带有加热保温功能的细长型双轴拌和器 - Google Patents

一种带有加热保温功能的细长型双轴拌和器 Download PDF

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Publication number
WO2019127952A1
WO2019127952A1 PCT/CN2018/080663 CN2018080663W WO2019127952A1 WO 2019127952 A1 WO2019127952 A1 WO 2019127952A1 CN 2018080663 W CN2018080663 W CN 2018080663W WO 2019127952 A1 WO2019127952 A1 WO 2019127952A1
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Prior art keywords
heating
shaft
mixing
heat preservation
stirring
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PCT/CN2018/080663
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English (en)
French (fr)
Inventor
施伟斌
夏一峰
王娟
朱英
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南京英达公路养护车制造有限公司
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Publication of WO2019127952A1 publication Critical patent/WO2019127952A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C19/1013—Plant characterised by the mode of operation or the construction of the mixing apparatus; Mixing apparatus
    • E01C19/104—Mixing by means of movable members in a non-rotating mixing enclosure, e.g. stirrers

Definitions

  • the invention relates to an elongated biaxial mixer, in particular to an elongated biaxial mixer with heating and heat preservation function, which is used for mixing asphalt mixture in the on-site heat regeneration construction of asphalt pavement. It belongs to the technical field of asphalt pavement construction machinery equipment.
  • a mixer is a mechanical device used to mix and form a mixture of materials and is widely used in various industrial production and engineering practices.
  • the quality of asphalt mixture directly affects the quality of pavement.
  • the asphalt mixture after the existing mixer is mixed with the road surface tends to have a lower material temperature, which cannot meet the construction requirements, thereby reducing the road surface quality.
  • the wear-resistant lining of the existing mixer is assembled by a plurality of small wear-resistant plates, and usually needs to be disassembled and assembled when the wear is severely required to be replaced, which is complicated.
  • the compensation for the error of the existing slender biaxial mixer is mostly caused by the manufacture of the product, but when the length of the slender biaxial mixer is long, the agitator shaft is a single integral long axis, when When the ambient temperature changes greatly, there are often no remedial measures for errors due to temperature differences.
  • the invention aims at some problems existing in the prior art, and proposes an elongated biaxial mixer with heating and heat preservation function, which can heat and heat the new and old asphalt mixture being mixed to ensure the material temperature reaches the construction.
  • the paving temperature required for the purpose of achieving good adhesion to the road surface and ensuring the quality of the road surface.
  • this slender biaxial mixer not only compensates for errors caused by manufacturing, but also compensates for errors caused by temperature changes, achieving double compensation double compensation; finally, the mixer is resistant
  • the lining is active and can be installed and removed whenever needed, making it quicker and easier.
  • a slender biaxial mixer with heating and insulation including a mixing tank and two mixing shafts.
  • the mixing tank is slender and has a cross section of ⁇ shape.
  • the two mixing shafts are provided with a plurality of stirring blocks, and the stirring blocks on the same stirring shaft are arranged spirally along the stirring shaft, and the two stirring shafts are arranged on the two stirring shafts.
  • the agitating blocks are arranged in an axial direction.
  • Two mixing shafts run through the ends of the mixing tank.
  • the utility model is characterized in that: the mixing cylinder is composed of an outer cylinder body and an inner cylinder body, and an insulating material is filled between the outer cylinder body and the inner cylinder body.
  • the heat insulating material is preferably a ceramic fiber material, or asbestos may be selected, but the asbestos is not environmentally friendly and harmful to human body, and attention is taken during preparation and use.
  • the cross-section of the mixing tank has an o-shaped wear-resistant lining, and the wear-resistant lining is installed on the inner wall of the mixing tank and fixed on the end surface thereof, so as to prevent the inner cylinder of the mixing tank from being worn during the long-term mixing process of the mixture. Serious and affect the use, then just remove and replace it.
  • the mixing tank has a top covering the heating plate.
  • the heating plate also known as the heating wall
  • the heating plate adopts a heating plate heated by gas infrared, and can also adopt a hot air heating mode.
  • the agitating shaft is segmented, and a short shaft connection is adopted between each segment of the agitating shaft.
  • the mixing cylinder is provided with a mounting frame at a position above the connecting short shaft, the mounting bracket hoisting the bearing seat, and the connecting short shaft is installed in the bearing housing.
  • One section connecting the stub shaft to the agitator shaft is fixedly connected, and the other section of the agitator shaft is splined.
  • the stirring block is composed of a stirring blade, a mounting seat, a mixing arm and a connecting plate, and the mounting seat is fixed on the stirring shaft, the mixing arm is fixed on the mounting seat and perpendicular to the stirring shaft, and the connecting plate is arranged at the end of the mixing arm, stirring The blades are mounted on the connecting plate.
  • the present invention has the following beneficial effects:
  • the invention adopts a heating plate to heat the mixture in the mixing tank to ensure that the temperature of the asphalt mixture paved to the road surface is sufficient, and it is more likely to thermally bond with the bottom surface of the road, thereby greatly improving the reliability of the road surface quality.
  • the wear-resistant lining plate is removed by pulling, so that the labor intensity when the wear-resistant lining plate needs to be replaced due to severe wear is greatly reduced, saving time and improving work efficiency.
  • the invention belongs to a slender biaxial mixer, which is especially suitable for the occasions that need to convey the mixing mixture over a long distance, which can not only realize the floating of the bearing, but also the shaft in the structure is also in a floating state during work, thereby achieving It can not only make up for the error caused by manufacturing, but also compensate the error caused by temperature change, realize double error double compensation, and further improve the accuracy of the whole structure.
  • the invention is suitable for the field of in-situ heat regeneration construction of asphalt pavement, and the structure adopted is convenient to maintain, the error is small, and the new asphalt mixture is heated and mixed, so that the asphalt pavement after construction has higher quality and better effect.
  • FIG. 1 is a schematic cross-sectional view showing a slender biaxial mixer with heating and heat preservation function according to the present invention.
  • Figure 2 is a schematic cross-sectional view taken along line A-A of Figure 1.
  • Figure 3 is a top plan view of Figure 2.
  • Figure 4 is a schematic view of the structure of the stirring shaft.
  • Fig. 5 is a partial enlarged view of Fig. 2;
  • Figure 6 is a partial enlarged view of II of Figure 2.
  • the present invention has a slender biaxial mixer with a heating and heat preservation function.
  • the mixing tank 4 is of a slender type and has a cross section of ⁇ shape.
  • the two stirring shafts are provided with a plurality of stirring blocks 22, and the stirring blocks 22 on the same stirring shaft are arranged spirally along the stirring shaft, and the two stirring shafts are arranged.
  • the agitating blocks are arranged in an axial direction.
  • Two mixing shafts run through the ends of the mixing tank.
  • the mixing tank 4 is composed of an outer cylinder 11 and an inner cylinder 12, and an insulating material 13 is filled between the outer cylinder and the inner cylinder to form an insulating layer.
  • the insulating material is preferably asbestos.
  • the mixing tank has a wear-resistant lining 5 having a ⁇ -shaped cross section, and the wear lining is installed on the inner wall of the mixing tank 4.
  • the mixing cylinder 4 is designed to seal the end cover at the opposite end of the motor. After opening the end cover, the wear-resistant lining 5 is inserted into the mixing tank 4, and the end plate of the wear-resistant lining 5 is provided with an end plate and fixed together with the end cover.
  • the inner cylinder of the mixing tank is seriously affected by the wear during the long-term mixing of the mixture, and only needs to be disassembled and replaced.
  • the two sides of the mixing tank 4 are provided with a heating wall supporting side plate 2, and the heating plate 3 is supported by the top of the mixing tank 4 to seal the upper portion of the mixing tank 4.
  • the heating plate adopts a heating plate heated by gas infrared.
  • the gas supply system 1 is responsible for providing the heating plate 3 with the fuel required for combustion, and the heating plate (also referred to as the heating wall) obtains the heat required by the system by burning the fuel and heats the mixture in the mixing tank by means of radiation. Its temperature rises to a certain extent.
  • the agitating shaft is a segmented type and is connected by three segments, and is divided into a front agitating shaft 8, a middle agitating shaft 30, and a rear agitating shaft 31.
  • one end of the connecting stub shaft 25 and the double-key bushing 23 are internally splined, the spline end of the connecting stub shaft 25 is engaged with the short shaft of the internal spline, and the output of the double-key bushing 23 and the motor
  • the shaft 6 is connected by a flat key 24.
  • Two intermeshing gears 7 are mounted on the two sets of agitating shafts, one of which is connected to the output shaft 6 of the motor via a flat key 24.
  • the other end of the connecting stub shaft 25 is inserted into the shaft hole of the front agitating shaft 8 and welded, thereby realizing the transmission of power from the motor to the agitating shaft.
  • the other end of the connecting stub shaft 25 is inserted into the shaft hole of the front agitating shaft 8, and welded.
  • An inner splined short shaft 16 is welded to the end of the middle agitating shaft 30, and the other end of the connecting short shaft 25 is spline-connected with the inner spline short shaft 16 to leave a set gap at the end of the connection for adaptation.
  • the connection mode of the middle stirring shaft 30 and the rear stirring shaft 31 is the same as that shown in Fig. 6.
  • the mixing cylinder 4 is provided with a mounting position above the connecting stub shaft, 10, a mounting bracket hoisting bearing block 27, a bearing bracket 27 having a built-in bearing 26, and a connecting stub shaft 25 being fitted in the bearing 26.
  • the bearing caps (28, 29) close the ends of the housing.
  • the agitating block 22 is composed of a stirring blade 19, a mounting seat 17, a mixing arm 18, and a connecting plate 20.
  • the mounting seat 17 is screwed to the agitating shaft
  • the mixing arm 18 is fixed to the mounting base and perpendicular to the agitating shaft
  • the connecting plate 20 is disposed at the end of the mixing arm 18, and the agitating blade 19 is mounted on the connecting plate 20.
  • a wear layer is sprayed on the surface of the agitating blade 19 to reduce wear and prolong its service life.
  • the agitating blocks 22 on the two sets of stirring shafts are arranged in the axial direction, the stirring blocks on the same stirring shaft are arranged spirally, and their projections on the horizontal plane do not coincide with each other, and the main functions thereof are: when the mixer is working The internal asphalt mixture is stirred to make the new and old asphalt materials evenly mixed; the mixture is heated evenly to avoid the local scorching phenomenon; and the continuous conveying of the mixture from the feeding port to the discharge port is realized.
  • the front agitating shaft 8 that drives the double agitating shaft is started by the motor (transmitted through the gear 7), and the front agitating shaft drives the short shaft and the middle agitating shaft to rotate, and the middle agitating shaft drives the agitating shaft to rotate.
  • the asphalt mixture enters from the feeding port 14 and is subjected to the infrared radiant heating of the heating plate 3 and the holding of the mixing tank 4 for heating to rotate, without increasing the temperature.
  • the charring phenomenon finally forms a paving material which is uniformly mixed with new and old asphalt materials and has sufficient temperature, and is discharged from the discharge port 15.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)

Abstract

一种带有加热保温功能的细长型双轴拌和器，包括拌缸（4）和两根搅拌轴。拌缸（4）由外缸体（11）和内缸体（12）构成，外缸体（11）和内缸体（12）之间填充保温材料（13）。拌缸（4）内套装耐磨衬板（5），其顶部覆盖加热板（3），搅拌轴为分段式，搅拌轴各个分段之间采用连接短轴（25）连接；拌缸（4）在连接短轴（25）上方位置设有安装架（10），安装架（10）吊装轴承座（27），连接短轴（25）安装在轴承座（27）内。该拌和器适用于沥青路面就地热再生施工，可加热拌和新旧沥青混合料。

Description

一种带有加热保温功能的细长型双轴拌和器 技术领域
本发明涉及一种细长型双轴拌和器，具体说是一种带有加热保温功能的细长型双轴拌和器，用于沥青路面就地热再生施工中沥青混合料的拌和。属于沥青路面施工机械设备技术领域。
背景技术
拌和器是一种用来将多种不同的物料混合并形成混合物的机械设备，广泛应用于各工业生产和工程实践中。作为沥青路面就地热再生工艺的一个关键环节，沥青混合料拌和质量的好坏直接影响到路面质量的优劣。然而，现有的拌和器所拌和后的沥青混合料，在与路面粘结时其料温往往较低不能达到施工的要求，从而降低了路面质量。其次，现有拌和器的耐磨衬板是由多个小的耐磨板拼装而成，在磨损严重需更换时通常需一块块拆装，比较繁杂。最后，现有细长型双轴拌和器对误差的补偿多是产品的制造而引起的误差，但当细长型双轴拌和器的长度较长，搅拌轴为单一整体的长轴，当所处环境温度变化较大的场合时，由于温差变化而引起的误差往往没有补救措施。
发明内容
本发明针对现有设备存在的一些问题，提出了一种带有加热保温功能的细长型双轴拌和器，它可以对正在拌和的新旧沥青混合料进行加热并保温，确保其料温达到施工时所需的摊铺温度，以便于实现与路面的良好粘合，保证路面质量。其次，这种细长型的双轴拌和器，不仅可以补偿因为生产制造引起的误差，同时还可以弥补由于温度的变化而带来的误差，实现双补偿双弥补；最后，该拌和器的耐磨衬板是活动的，可以在任何需要的时候来安装和拆卸，更方便快捷。
为了解决上述技术问题，本发明所采用如下技术方案:
一种带有加热保温功能的细长型双轴拌和器，包括拌缸和两根搅拌轴。所述拌缸为细长型，其截面呈ω形，两根搅拌轴上均带有多组搅拌块，同一根搅拌轴上的各搅拌块沿搅拌轴呈螺旋布置，两根搅拌轴上的搅拌块在轴向交叉布置。两根搅拌轴贯穿拌缸两端。其特征是：所述拌缸由外缸体和内缸体构成，外缸体和内缸体之间填充保温材料。所述保温材料优选陶瓷纤维材料，也可以选择石棉，但石棉不环保且对人身体有害，制备和使用过程中注意防护。
所述拌缸内套装截面呈ω形的耐磨衬板，耐磨衬板安装在拌缸的内壁并固定在其端面，以防拌缸的内缸体在混合料长期的搅拌过程中受磨损严重而影响使用，这时只需拆卸下 来更换即可。
所述拌缸，其顶部覆盖加热板。加热板(又称作加热墙)则通过燃烧燃料来获得系统所需的热量并通过辐射的方式加热拌缸内的混合料，使其温度升高至一定范围。
所述加热板，采用燃气红外加热的加热板，也可以采用热风加热方式。
所述搅拌轴为分段式，搅拌轴各个分段之间采用连接短轴连接。所述拌缸在连接短轴上方位置设有安装架，安装架吊装轴承座，连接短轴安装在轴承座内。连接短轴与搅拌轴的一个分段为固定连接，与搅拌轴的另一个分段采用花键连接。解决了搅拌轴在温度大幅度变化环境中热胀冷缩问题。
所述搅拌块，由搅拌叶片、安装座、拌臂和连接板组成，安装座固定在搅拌轴上，拌臂固定在安装座上且与搅拌轴垂直，连接板设在拌臂端部，搅拌叶片安装在连接板上。
与现有技术相比，本发明具有以下有益效果：
本发明采用加热板对拌缸内的混合料进行加热，确保摊铺到路面的沥青混合料温度足够，更容易与路底面产生热粘结，从而使路面质量的可靠性得到大幅度提升。采用抽拉式拆卸的耐磨衬板，使因磨损严重而需更换耐磨衬板时的劳动强度大大降低，节省了时间，提高了工作效率。本发明属于一种细长型的双轴拌和器，对于需要长距离传送拌和混合料的场合尤其适用，它不仅可以实现轴承的浮动，而且结构中的轴在工作时也处于浮动状态，从而达到既可以弥补制造带来的误差，又可以补偿温度变化引起的误差，实现双误差双补偿，使结构整体的精确性得以进一步提高。本发明适用于沥青路面就地热再生施工技术领域，所采用的结构维修方便、误差小、加热拌和新旧沥青混合料，使施工后的沥青路面质量更高、效果更好。
附图说明
图1是本发明一种带有加热保温功能的细长型双轴拌和器断面结构示意图。
图2图1的A-A剖面示意图。
图3图2的俯视示意图。
图4搅拌轴结构示意图。
图5图2的Ⅰ局部放大示意图。
图6图2的Ⅱ局部放大示意图。
具体实施方式
下面结合附图和实施例，对本发明作进一步详细说明。
如图1、图2所示，本发明带有加热保温功能的细长型双轴拌和器。其拌缸4为细长型，截面呈ω形，两根搅拌轴上均带有多组搅拌块22，同一根搅拌轴上的各搅拌块22沿搅 拌轴呈螺旋布置，两根搅拌轴上的搅拌块在轴向交叉布置。两根搅拌轴贯穿拌缸两端。
所述拌缸4由外缸体11和内缸体12构成，外缸体和内缸体之间填充保温材料13，形成保温层。所述保温材料优选石棉。
所述拌缸内套装截面呈ω形的耐磨衬板5，耐磨衬板安装在拌缸4的内壁。拌缸4在电机相对的一端为端盖密封设计，打开端盖后，将耐磨衬板5插入到拌缸4内，耐磨衬板5的端部设端板，与端盖一起固定。拌缸的内缸体在混合料长期的搅拌过程中受磨损严重而影响使用，这时只需拆卸下来更换即可。
拌缸4的两个侧面设有加热墙支撑侧板2，加热板3由其支撑覆盖在拌缸4的顶部，将拌缸4上部密封。所述加热板采用燃气红外加热的加热板。供气系统1负责为加热板3提供燃烧所需的燃料，加热板(又称作加热墙)则通过燃烧燃料来获得系统所需的热量并通过辐射的方式加热拌缸内的混合料，使其温度升高至一定范围。
所述搅拌轴为分段式，由三段连接而成，分为前搅拌轴8、中搅拌轴30和后搅拌轴31。
如图5所示，连接短轴25的一端与双键轴套23为内花键连接，连接短轴25的花键端与内花键短轴相啮合，双键轴套23与马达的输出轴6通过平键24连接。在两组搅拌轴上分别安装两个相互啮合的齿轮7，其中一个齿轮7通过平键24与马达的输出轴6连接。连接短轴25的另一端插入前搅拌轴8的轴孔内并焊接起来，从而实现了动力从马达到搅拌轴的传递。
如图6所示，连接短轴25的另一端插入前搅拌轴8的轴孔内并焊接起来。中搅拌轴30端部焊接一个内花键短轴16，连接短轴25的另一端与内花键短轴16花键式连接，在连接的端部处留有设定的空隙，用于适应搅拌轴的热胀冷缩。中搅拌轴30和后搅拌轴31连接方式与图6所示的相同。
所述拌缸4，在连接短轴上方位置设有安装,10，安装架吊装轴承座27，轴承座27内置轴承26，连接短轴25套装在轴承26内。轴承盖(28，29)将轴承座两端封闭。
如图4所示，所述搅拌块22，由搅拌叶片19、安装座17、拌臂18和连接板20组成。安装座17用螺丝固定在搅拌轴上，拌臂18固定在安装座上且与搅拌轴垂直，连接板20设在拌臂18端部，搅拌叶片19安装在连接板20上。在搅拌叶片19的表面喷涂有耐磨层，从而减轻磨损延长它的使用寿命。两组搅拌轴上的搅拌块22在轴向交叉布置，同一根搅拌轴上的搅拌块呈螺旋布置，且它们在水平面上的投影互相不重合，其功用主要有：在拌和器工作时对其内部的沥青混合料进行搅拌使新旧沥青料混合均匀；通过搅拌使混合料受热 均匀避免局部烧焦现象的发生；实现混合料由进料口向出料口的不断输送。
该拌和器工作时，由马达(通过齿轮7传递)驱动双搅拌轴的前搅拌轴8开始转动，前搅拌轴带动连接短轴和中搅拌轴转动，中搅拌轴再带动后搅拌轴转动，这样，在螺旋布置的搅拌块的连续作用下，沥青混合料从进料口14进入，并经受加热板3的红外辐射加热和拌缸4的保温，以便加热以便转动，在温度提高的同时不产生烧焦现象，最终形成新旧沥青料拌和均匀且温度足够的摊铺材料，并由出料口15下料流出。

Claims (5)

  1. 一种带有加热保温功能的细长型双轴拌和器，包括拌缸和两根搅拌轴；所述拌缸为细长型，其截面呈ω形，两根搅拌轴上均带有多组搅拌块；其特征是：
    所述拌缸由外缸体和内缸体构成，外缸体和内缸体之间填充保温材料；
    所述拌缸内套装截面呈ω形的耐磨衬板；
    所述拌缸，其顶部覆盖加热板；
    所述搅拌轴为分段式，搅拌轴各个分段之间采用连接短轴连接；所述拌缸在连接短轴上方位置设有安装架，安装架吊装轴承座，连接短轴安装在轴承座内。
  2. 根据权利要求1所述带有加热保温功能的细长型双轴拌和器，其特征是：所述保温材料优选陶瓷纤维材料。
  3. 根据权利要求1所述带有加热保温功能的细长型双轴拌和器，其特征是：所述加热板，采用燃气红外加热的加热板或热风加热板。
  4. 根据权利要求1所述带有加热保温功能的细长型双轴拌和器，其特征是：连接短轴与搅拌轴的一个分段为固定连接，与搅拌轴的另一个分段采用花键连接。
  5. 根据权利要求1所述带有加热保温功能的细长型双轴拌和器，其特征是：所述搅拌块，由搅拌叶片、安装座、拌臂和连接板组成，安装座固定在搅拌轴上，拌臂固定在安装座上且与搅拌轴垂直，连接板设在拌臂端部，搅拌叶片安装在连接板上。
PCT/CN2018/080663 2017-12-25 2018-03-27 一种带有加热保温功能的细长型双轴拌和器 WO2019127952A1 (zh)

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