WO2020042423A1 - 湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平台 - Google Patents

湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平台 Download PDF

Info

Publication number
WO2020042423A1
WO2020042423A1 PCT/CN2018/120206 CN2018120206W WO2020042423A1 WO 2020042423 A1 WO2020042423 A1 WO 2020042423A1 CN 2018120206 W CN2018120206 W CN 2018120206W WO 2020042423 A1 WO2020042423 A1 WO 2020042423A1
Authority
WO
WIPO (PCT)
Prior art keywords
particle aggregate
rebound
wet concrete
vertical
stepping motor
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.)
Ceased
Application number
PCT/CN2018/120206
Other languages
English (en)
French (fr)
Inventor
潘刚
陈连军
李鹏程
边文辉
马官国
周智
程奎峰
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.)
Shandong University of Science and Technology
Original Assignee
Shandong University of Science and Technology
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 Shandong University of Science and Technology filed Critical Shandong University of Science and Technology
Publication of WO2020042423A1 publication Critical patent/WO2020042423A1/zh
Priority to ZA2021/01259A priority Critical patent/ZA202101259B/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N2021/8405—Application to two-phase or mixed materials, e.g. gas dissolved in liquids

Definitions

  • the present invention relates to the technical field of wet concrete shot test, and in particular, to a test platform for the rebound and adhesion mechanism of wet concrete shot single particle aggregate.
  • the wet concrete spraying technology is widely used worldwide due to its high spraying efficiency, low cost, and good quality.
  • the rebound of the spray and the dust problem caused by it are a problem that has long plagued wet-concrete spray construction, which not only causes material loss and pollution of the operating environment, but also reduces the strength of the sprayed concrete layer.
  • the aggregate accounts for about 3/4 of the total volume of the concrete.
  • the rebound of concrete shot is mainly the collision between the aggregate and surrounding rock and aggregate particles. Therefore, to study the rebound of shotcrete is to study the effect of the characteristics of concrete aggregate on the rebound of shotcrete, and to provide theoretical support for the technology of shotcrete and dust reduction.
  • the object of the present invention is to provide a test platform for the rebound and adhesion mechanism of single particle aggregates of wet concrete spray, which can conveniently and accurately establish a model of rebound of concrete aggregates for the study of single particles during wet concrete spraying. Aggregate rebound and adhesion mechanism.
  • the present invention provides a wet concrete sprayed single particle aggregate rebound and adhesion mechanism test platform.
  • the wet concrete sprayed single particle aggregate rebound and adhesion mechanism test platform includes a test bench, a particle sprayer, and a feedstock.
  • the test bench includes a horizontal bracket, a vertical bracket, and a support rod, and horizontal rails are arranged on the horizontal bracket in the front-rear direction, and the lower end of the vertical bracket is slidably connected to the horizontal rail.
  • a vertical rail is arranged on the vertical support in a vertical direction, and the support rod is slidably connected to the vertical rail.
  • a support slider is slidably connected to the support rod.
  • a rotation block is provided on the support slider, and the rotation block can be up and down relative to the support slider.
  • Swing; the particle ejector includes an ejector support provided on a rotating block
  • the rack and the first stepping motor, gear, loading rack, injection pipe and travel switch provided on the ejector bracket.
  • the first stepping motor drives the loading rack to reciprocate linearly through the gear, and the top of the loading rack
  • the surface is equidistantly provided with a plurality of troughs.
  • the spraying end of the spray pipe is located at the same horizontal position as the trough.
  • the two ends of the loading rack are provided with a limit switch.
  • the switching signal is connected to the control end of the first stepping motor.
  • the feeding device includes a hopper, a second stepping motor, a stirring shaft, a feeding tube, a feeding spoon and a discharging tube.
  • the hopper is arranged on the ejector support.
  • a second stepping motor is arranged on the side, and the output shaft of the second stepping motor is coaxially connected to the stirring shaft.
  • a plurality of feeding tubes are arranged at equal intervals in the radial direction of the stirring shaft.
  • a feeding spoon is set at one end of the feeding tube.
  • the other end of the feeding pipe is connected to one end of the discharge pipe, and the other end of the discharge pipe is located above the linear reciprocating position of the hopper;
  • the spraying device includes a base, a spraying frame and a receiving Panel, the receiving frame is set on the base, and the receiving panel is set on the spray frame; one air duct at the output end of the air compressor is connected to the spray tube through a pipe joint;
  • a high-speed camera is set on the outside of the test bench, and the high-speed camera faces a single particle aggregate And the rebound direction of the single particle aggregate sprayed to the sprayed panel;
  • the computer signal is connected to the high-speed camera.
  • the sprayed device further includes a closed water tank, a vertical guide rail, a water pipe support rod, a water pipe, and a nozzle, another air duct at the output end of the air compressor is connected to the closed water tank, and vertical rails are arranged on both sides of the sprayed frame.
  • the two ends of the water pipe support rod are slidably connected to the vertical guide rails.
  • a plurality of water pipes are arranged on the water pipe support rod. One end of the water pipe is connected to the closed water tank through the pipeline. The other end of the water pipe is provided with a nozzle and the other end of the water pipe faces the sprayed panel.
  • the vertical guide rail is a vertical rack
  • a third stepper motor is provided at both ends of the water pipe support rod, and the third stepper motor engages the vertical rack via a gear.
  • the computer signal is connected to the third stepping motor.
  • the output end of the air compressor is respectively connected to one air duct and the other air duct through an electromagnetic directional valve.
  • the computer is signal-connected to the first stepper motor and the second stepper motor, respectively.
  • a fourth stepping motor is respectively provided on both ends of the horizontal rail on the horizontal support, and an output shaft of the fourth stepping motor is connected to a wire wheel, and a wire is wound around the wire wheel. Straighten the lower end of the stand.
  • the computer signal is connected to the fourth stepping motor.
  • a fifth stepping motor is provided on the vertical bracket at the upper end of the vertical rail, and the output shaft of the fifth stepping motor is connected to the cable wheel, and the cable is wound with a cable, and the end of the cable is connected to the support. Pole.
  • the computer signal is connected to the fifth stepping motor.
  • the wet concrete sprayed single particle aggregate rebound and adhesion mechanism test platform of the present invention has the following characteristics and advantages:
  • the wet concrete spraying single particle aggregate rebound and adhesion mechanism test platform of the present invention has simple test operation and high degree of automation, and can easily and accurately establish a concrete aggregate rebound model, and accurately measure the concrete from a mesoscopic angle. Relevant parameters of single particle aggregate rebounding against the wall (adhesion), to better study the mechanism of single particle aggregate rebound and adhesion during wet concrete spraying.
  • FIG. 1 is a schematic structural diagram of a test platform for rebound and adhesion mechanism of wet concrete sprayed single particle aggregate
  • FIG. 2 is a particle ejector in a test platform for rebound and adhesion mechanism of wet concrete sprayed single particle aggregate; The main view of the feeding device;
  • FIG. 3 is a side view of a particle ejector and a feeding device in a wet concrete spray single particle aggregate rebound and adhesion mechanism test platform;
  • FIG. 4 is a schematic structural diagram of a test bench in a wet concrete spray single particle aggregate rebound and adhesion mechanism test platform
  • FIG. 5 is a schematic structural diagram of a spray device in a wet concrete spray single particle aggregate rebound and adhesion mechanism test platform; [0023] Among them, 101, air compressor, 102, electromagnetic reversing valve, 103, duct, 104, pipe joint, 201, injector bracket, 202, injection pipe, 203, charging rack, 204, first Drive gear, 205, travel switch, 206, hopper, 211, hopper, 212, mixing shaft, 213, feeding spoon, 214, discharge pipe, 215, hopper bracket, 216, feed pipe, 301, horizontal rail, 302, vertical track, 303, adhesive layer, 304, slider, 305, support rod, 306, support slider, 307, rotating block, 308, cable, 401, base, 402, spray frame, 403, Vertical guide, 404, water pipe support rod, 405, nozzle, 406, closed water tank, 407, water pipe, 408, second drive gear, 409, sprayed panel, 501, first stepper motor, 502, second step Motor
  • this embodiment provides a test platform for rebound and adhesion mechanism of single particle aggregate of wet concrete spraying.
  • the test platform for rebound and adhesion mechanism of single particle aggregate of wet concrete spraying includes Test bench, particle ejector, feeding device, receiving device, air compressor 101, high-speed camera 6 and computer 7 etc.
  • the test bench includes a horizontal support, a vertical support, and a support rod 305.
  • the lower surface of the horizontal bracket is fixed to the ground through an adhesive layer 3 03.
  • a horizontal rail 301 is arranged on the horizontal support in the front-rear direction, and the lower end of the vertical support is slidably connected to the horizontal rail 301 via a slide bar 304.
  • a fourth stepping motor 504 is provided on each end of the horizontal rail 301 on the horizontal bracket.
  • the output shaft of the fourth stepping motor 504 is connected to a wire wheel.
  • a wire 308 is wound around the wire wheel, and the end of the wire 308 is connected to the vertical.
  • the cable 308 of this embodiment is a nylon wire. Under the control of the computer 7, the fourth stepping motor 504 at both ends of the horizontal rail 301 causes the reel to retract the cable 308, so that the cable 308 drives the vertical bracket to move back and forth along the horizontal rail 301.
  • a vertical rail 302 is arranged on the vertical support in a vertical direction, and the support rod 305 is slidably connected to the vertical rail 302.
  • a fifth stepping motor 505 is provided on the vertical bracket at the upper end of the vertical rail 302. The output shaft of the fifth stepping motor 505 is connected to a cable wheel.
  • a cable 308 is wound around the cable wheel, and the end of the cable 308 is connected to a support rod. 305.
  • the fifth stepping motor 505 causes the reel to retract the cable 308 under the control of the computer 7, and realizes that the support rod 305 moves up and down along the vertical track 302 under the gravity of the support rod 305.
  • a support slider 306 is slidably connected to the support rod 305, and the support slider 306 can move left and right along the support rod 305.
  • the support slider 306 is provided with a rotation block 307.
  • the rotation block 307 can swing up and down relative to the support slider 306.
  • the support slider 306 of this embodiment is provided with a U-shaped groove, and the rotating block 307 is located in the U-shaped groove.
  • One end of the rotating block 307 is hinged to the support slider 306.
  • a screw is provided on the U-shaped groove. The end of the rotating screw can contact or Disengage the rotation block 307 to position the swing angle of the rotation block 307.
  • the vertical support moves back and forth along the horizontal rail 301, the support rod 305 moves up and down along the vertical rail 302, the support slider 306 moves left and right along the support rod 305, and the rotating block 307 swings up and down relative to the support slider 306.
  • An injector bracket 201 is provided on the rotating block 307, and an injection pipe 202 is provided on the injector bracket 201. In this way, the injection position and angle of the injection pipe 202 are adjusted.
  • the particle injector includes an injector bracket 201 provided on the rotating block 307.
  • the injector bracket 201 is provided with a first stepping motor 501, a first driving gear 204, a charging rack 203, an injection pipe 202, and a stroke switch. 205
  • the first stepping motor 501 drives the charging rack 203 to reciprocate linearly via the first driving gear 204.
  • a plurality of hoppers 206 are provided on the upper surface of the charging rack 203 at equal intervals.
  • the hopper 206 is used for containing single-grain aggregate.
  • One end of the spray pipe 202 is supplied with high-pressure air by an air compressor 101.
  • the spraying end of the spraying pipe 202 and the hopper 206 are located at the same horizontal position.
  • the high-pressure air sprayed from the spraying end of the spraying pipe 202 sprays out a single aggregate in the hopper 206 to the spraying panel 409 of the spraying device.
  • the two ends of the loading rack 203 are provided with a travel switch 205, and the left and right ends of the injector bracket 201 are provided with electromagnetic coils that are inductive to the travel switch 205.
  • the travel switch 205 is signally connected to the control end of the first stepping motor 501.
  • the control end of the first stepping motor 501 is the computer 7.
  • the travel switch 205 senses the electromagnetic coil, the travel switch 205 transmits a reverse rotation signal to the control end of the first stepping motor 501 to control the first stepping motor 501 to rotate in the reverse direction.
  • the feeding device includes a hopper 211, a second stepping motor 502, a stirring shaft 212, a feeding tube 216, and a feeding spoon 21
  • the hopper 211 is assembled on the injector support 201 via the hopper support 215.
  • a second stepping motor 502 is disposed on one side of the hopper 211, and an output shaft of the second stepping motor 502 is coaxially connected to the stirring shaft 212.
  • a plurality of feeding tubes 216 are arranged at equal intervals in the radial direction of the stirring shaft 212, and one end of the feeding tube 216 is provided with a feeding spoon 213.
  • the feeding spoon 213 is located in the space in the hopper 21, and the other end of the feeding pipe 216 is connected to one end of the discharging pipe 214, and the other end of the discharging pipe 214 is located above the linear reciprocating position of the feeding trough 206.
  • the second stepping motor 502 drives the stirring shaft 212 to rotate, and the feeding spoon 213 digs out the single particle aggregate in the concrete slurry in the hopper 211.
  • Loading rack 203 linear reciprocating The movement frequency and the rotation frequency of the stirring shaft 212 have a synchronous multiple relationship.
  • the single-particle aggregate enters the feeding pipe 216 and falls from the discharging pipe 214 into the feeding tank 206.
  • the spraying device includes a base 401, a spraying frame 402, a spraying panel 409, a closed water tank 406, a vertical guide 403, a water pipe supporting rod 404, a water pipe 407, and a nozzle 405.
  • a spray receiving frame 402 is provided on the base 401, and a spray receiving panel 409 is provided on the spray receiving frame 402.
  • the concrete slurry is sprayed on the sprayed panel 409 to simulate the concrete wall surface being sprayed by the project, and then the rebound and adhesion parameters of the single particle aggregate sprayed onto the concrete wall surface are determined in the test.
  • Vertical rails 403 are arranged on both sides of the sprayed frame 402.
  • the vertical rails 403 of this embodiment are vertical racks.
  • the two ends of the water pipe supporting rod 404 are slidably connected to the vertical guide rail 403.
  • the two ends of the water pipe supporting rod 404 are provided with a third stepping motor 503, and the third stepping motor 503 engages the vertical rack 403 via the second driving gear 408.
  • the third stepping motor 503 drives the water pipe support rod 404 to reciprocate in the vertical direction along the vertical guide rail 403.
  • a plurality of water pipes 407 are arranged on the water pipe support rod 404.
  • One end of the water pipe 407 is connected to the lower end of the closed water tank 406 through a pipeline (omitted from the figure).
  • the other end of the water pipe 407 faces the receiving panel 409, and the other end of the water pipe 407 is provided with a nozzle 405.
  • the jet direction of the nozzle 405 is the same as the receiving panel 409. 30. inclination. After the end of one test, under the driving of the third stepping motor 503, the water pipe support rod 404 reciprocated in the vertical direction, and the nozzle 405 washed the concrete slurry on the sprayed panel 409.
  • the output end of the air compressor 101 is connected to one air duct 103 and the other air duct 103 via an electromagnetic directional valve 102, respectively. Air flow is switched and controlled via the electromagnetic directional valve 102.
  • An air pipe 103 at the output end of the air compressor 101 is connected to the injection pipe 202 via a pipe joint 104, and the air compressor 101 provides high-pressure air to the injection pipe 202.
  • the other air duct 103 at the output end of the air compressor 101 is connected to the upper end of the closed water tank 406. The high-pressure air generated by the air compressor 101 presses the water in the closed water tank 406 into the water pipe 407 through the pipeline.
  • the computer 7 is respectively connected to the first stepping motor 501, the second stepping motor 502, the third stepping motor 503, the fourth stepping motor 504, and the fifth stepping motor 505 via a signal cable, and is controlled by the computer 7. Action of each stepper motor.
  • the wet concrete spraying single particle aggregate rebound and adhesion mechanism test platform of this embodiment adjusting the spraying position and angle of the spraying pipe 202, taking out the single particle aggregate from the hopper 211 and putting it into the hopper 206, the spraying pipe
  • the high-pressure air sprayed from the spraying end of 202 sprays out the single-particle aggregate in the hopper 206 to the sprayed panel 409 of the spraying device. 409 on.
  • the high-speed camera 6 is disposed outside the test bench.
  • the high-speed camera 6 faces the spray direction of the single-particle aggregate and the rebound direction of the single-particle aggregate sprayed onto the receiving panel 409.
  • the high-speed camera sprays the single-particle aggregate. And rebound for particle tracking.
  • the computer 7 is connected to the high-speed camera 6 via a signal cable to read the particle tracking data of the high-speed camera 6, and calculate the initial velocity V0 of the single particle aggregate ejected from the particle tracking data, and rebound from the sprayed panel 409. The velocity V and the running trajectory of the single-particle aggregate to determine the energy loss of the single-particle aggregate from ejection to rebound.

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

一种湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平台，属于湿式混凝土喷射试验技术领域。空气压缩机(101)为粒子喷射器、受喷装置提供高压气体，试验台架对喷射位置调整，给料装置从料斗(211)取出单颗粒骨料，粒子喷射器对单颗粒骨料喷射，受喷装置接受单颗粒骨料喷射并实现自动清洗，高速摄像机(6)对单颗粒骨料的喷射和回弹进行粒子追踪，计算机(7)实现自动控制和数据提取。试验操作简单，自动化程度较高，能够方便、精准建立混凝土骨料回弹模型，从细观角度精确测定混凝土单颗粒骨料碰壁回弹与粘附的相关参数，更好地研究湿式混凝土喷射过程中单颗粒骨料回弹与粘附机理。

Description

湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平台 技术领域
[0001] 本发明涉及湿式混凝土喷射试验技术领域， 特别是涉及一种湿式混凝土喷射单 颗粒骨料回弹与粘附机理试验平台。
背景技术
[0002] 湿式混凝土喷射技术， 由于其喷射效率高、 成本低、 质量好等特点在世界范围 内被广泛应用。 与此同时， 喷射回弹及其导致的粉尘问题是长期困扰湿式混凝 土喷射施工的难题， 不仅造成物料损失， 作业环境污染， 同时混凝土喷层强度 降低。 湿喷混凝土材料配比组成中， 骨料约占混凝土总体积的 3/4, 混凝土喷射 回弹主要是骨料与围岩以及骨料颗粒之间的碰撞。 所以， 研究喷射混凝土的回 弹就是研究混凝土骨料特性对喷射混凝土回弹的影响， 为喷射混凝土减弹降尘 技术提供理论支持。
发明概述
技术问题
问题的解决方案
技术解决方案
[0003] 本发明的目的在于提供一种湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平 台， 能够方便、 精准建立混凝土骨料回弹模型， 以用于研究湿式混凝土喷射过 程中单颗粒骨料回弹与粘附机理。
[0004] 本发明提供一种湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平台， 湿式混 凝土喷射单颗粒骨料回弹与粘附机理试验平台包括试验台架、 粒子喷射器、 给 料装置、 受喷装置、 空气压缩机、 高速摄像机和计算机； 试验台架包括水平支 架、 竖直支架和支撑杆， 水平支架上沿前后方向布置有水平轨道， 竖直支架的 下端滑动连接水平轨道， 竖直支架上沿竖直方向布置有竖直轨道， 支撑杆滑动 连接竖直轨道， 支撑杆上滑动连接有支撑滑块， 支撑滑块上设置有旋转块， 旋 转块可相对于支撑滑块上下摆动； 粒子喷射器包括设置于旋转块上的喷射器支 架和设置于喷射器支架上的第一步进电机、 齿轮、 装料齿条、 喷射管和行程开 关， 第一步进电机经齿轮驱动装料齿条直线往复运动， 装料齿条的上表面等间 距开设有多个料槽， 喷射管的喷射端与料槽位于同一水平位置， 装料齿条的两 端设置行程开关， 喷射器支架的两端设置与行程开关感应的电磁线圈， 行程开 关信号连接第一步进电机的控制端； 给料装置包括料斗、 第二步进电机、 搅拌 轴、 进料管、 进料勺和出料管， 料斗设置于喷射器支架上， 料斗的一侧设置第 二步进电机， 第二步进电机的输出轴同轴连接搅拌轴， 搅拌轴的径向等间距设 置多个进料管， 进料管的一端设置进料勺， 进料勺位于料斗内的空间， 进料管 的另一端均连通出料管的一端， 出料管的另一端位于料槽直线往复运动位置的 上方； 受喷装置包括底座、 受喷框架和受喷面板， 底座上设置受喷框架， 受喷 框架上设置受喷面板； 空气压缩机的输出端的一路风管经管接头连接喷射管； 高速摄像机设置于试验台架的外侧， 高速摄像机朝向单颗粒骨料的喷射方向以 及单颗粒骨料喷射到受喷面板的回弹方向； 计算机信号连接高速摄像机。
[0005] 进一步的， 受喷装置还包括密闭水箱、 竖直导轨、 水管支撑杆、 水管和喷嘴， 空气压缩机的输出端的另一路风管连接密闭水箱， 受喷框架的两侧布置竖直导 轨， 水管支撑杆的两端滑动连接竖直导轨， 水管支撑杆上布置多个水管， 水管 的一端经管路连接密闭水箱， 水管的另一端设置喷嘴且水管的另一端朝向受喷 面板。
[0006] 进一步的， 竖直导轨为竖直齿条， 水管支撑杆的两端均设置有第三步进电机， 第三步进电机经齿轮啮合竖直齿条。
[0007] 进一步的， 计算机信号连接第三步进电机。
[0008] 进一步的， 空气压缩机的输出端经电磁换向阀分别连接一路风管和另一路风管
[0009] 进一步的， 计算机分别信号连接第一步进电机和第二步进电机。
[0010] 进一步的， 水平支架上于水平轨道的两端分别设置有第四步进电机， 第四步进 电机的输出轴连接有线轮， 线轮上缠绕有线缆， 线缆的末端连接竖直支架的下 端。
[0011] 进一步的， 计算机信号连接第四步进电机。 [0012] 进一步的， 竖直支架上于竖直轨道的上端设置有第五步进电机， 第五步进电机 的输出轴连接有线轮， 线轮上缠绕有线缆， 线缆的末端连接支撑杆。
[0013] 进一步的， 计算机信号连接第五步进电机。
发明的有益效果
有益效果
[0014] 与现有技术相比， 本发明的湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平 台具有以下特点和优点：
[0015] 本发明的湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平台， 试验操作简单 ， 自动化程度较高， 能够方便、 精准建立混凝土骨料回弹模型， 从细观角度精 确测定混凝土单颗粒骨料碰壁回弹 （粘附） 的相关参数， 更好地研究湿式混凝 土喷射过程中单颗粒骨料回弹与粘附机理。
[0016] 结合附图阅读本发明的具体实施方式后， 本发明的特点和优点将变得更加清楚
对附图的简要说明
附图说明
[0017] 为了更清楚地说明本发明实施例或现有技术中的技术方案， 下面将对实施例或 5见有技术描述中所需要使用的附图作简单地介绍， 显而易见地， 下面描述中的 附图是本发明的一些实施例， 对于本领域普通技术人员来讲， 在不付出创造性 劳动的前提下， 还可以根据这些附图获得其他的附图。
[0018] 图 1为湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平台的结构示意图； [0019] 图 2为湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平台中粒子喷射器、 给 料装置的主视图；
[0020] 图 3为湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平台中粒子喷射器、 给 料装置的侧视图；
[0021] 图 4为湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平台中试验台架的结构 示意图；
[0022] 图 5为湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平台中受喷装置的结构 示意图； [0023] 其中， 101、 空气压缩机， 102、 电磁换向阀， 103、 风管， 104、 管接头， 201 、 喷射器支架， 202、 喷射管， 203、 装料齿条， 204、 第一驱动齿轮， 205、 行 程开关， 206、 料槽， 211、 料斗， 212、 搅拌轴， 213、 进料勺， 214、 出料管， 215、 料斗支架， 216、 进料管， 301、 水平轨道， 302、 竖直轨道， 303、 胶粘层 ， 304、 滑杆， 305、 支撑杆， 306、 支撑滑块， 307、 旋转块， 308、 线缆， 401 、 底座， 402、 受喷框架， 403、 竖直导轨， 404、 水管支撑杆， 405、 喷嘴， 406 、 密闭水箱， 407、 水管， 408、 第二驱动齿轮， 409、 受喷面板， 501、 第一步 进电机， 502、 第二步进电机， 503、 第三步进电机， 504、 第四步进电机， 505 、 第五步进电机， 6、 高速摄像机， 7、 计算机。
发明实施例
本发明的实施方式
[0024] 如图 1至图 5所示， 本实施例提供一种湿式混凝土喷射单颗粒骨料回弹与粘附机 理试验平台， 湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平台包括试验台 架、 粒子喷射器、 给料装置、 受喷装置、 空气压缩机 101、 高速摄像机 6和计算 机 7等。
[0025] 试验台架包括水平支架、 竖直支架和支撑杆 305。 水平支架的下表面经胶粘层 3 03固定于地面。 水平支架上沿前后方向布置有水平轨道 301， 竖直支架的下端经 滑杆 304滑动连接水平轨道 301。 水平支架上于水平轨道 301的两端各设置一个第 四步进电机 504, 第四步进电机 504的输出轴连接有线轮， 线轮上缠绕有线缆 308 ， 线缆 308的末端连接竖直支架的下端。 本实施例的线缆 308为尼龙线。 水平轨 道 301两端的第四步进电机 504在计算机 7的控制下， 使线轮收放线缆 308， 以由 线缆 308带动竖直支架沿水平轨道 301前后移动。
[0026] 竖直支架上沿竖直方向布置有竖直轨道 302, 支撑杆 305滑动连接竖直轨道 302 。 竖直支架上于竖直轨道 302的上端设置有第五步进电机 505 , 第五步进电机 505 的输出轴连接有线轮， 线轮上缠绕有线缆 308 , 线缆 308的末端连接支撑杆 305。 第五步进电机 505在计算机 7的控制下， 使线轮收放线缆 308， 且在支撑杆 305的 重力作用下， 实现支撑杆 305沿竖直轨道 302上下移动。
[0027] 支撑杆 305上滑动连接有支撑滑块 306， 支撑滑块 306可沿支撑杆 305左右移动。 支撑滑块 306上设置有旋转块 307， 旋转块 307可相对于支撑滑块 306上下摆动。 本实施例的支撑滑块 306上设置有 U形槽， 旋转块 307位于 U形槽内， 旋转块 307的 一端铰接支撑滑块 306 , U形槽上设置有螺钉， 旋转螺钉的末端可接触或脱离旋 转块 307 , 以对旋转块 307的摆动角度进行定位。
[0028] 竖直支架沿水平轨道 301前后移动， 支撑杆 305沿竖直轨道 302上下移动， 支撑 滑块 306沿支撑杆 305左右移动， 旋转块 307相对于支撑滑块 306上下摆动。 旋转 块 307上设置喷射器支架 201， 喷射器支架 201上设置喷射管 202。 如此， 以调整 喷射管 202的喷射位置和角度。
[0029] 粒子喷射器包括设置于旋转块 307上的喷射器支架 201， 喷射器支架 201上设置 第一步进电机 501、 第一驱动齿轮 204、 装料齿条 203、 喷射管 202和行程开关 205
[0030] 第一步进电机 501经第一驱动齿轮 204驱动装料齿条 203直线往复运动。 装料齿 条 203的上表面等间距开设有多个料槽 206。 料槽 206内用于盛放单颗粒骨料。 喷 射管 202的一端由空气压缩机 101提供高压空气。 喷射管 202的喷射端与料槽 206 位于同一水平位置。 喷射管 202的喷射端喷射出的高压空气将料槽 206中的单颗 粒骨料喷射出去射向受喷装置的受喷面板 409。 装料齿条 203的两端设置行程开 关 205 , 喷射器支架 201的左右两端设置与行程开关 205感应的电磁线圈， 行程开 关 205信号连接第一步进电机 501的控制端， 本实施例中第一步进电机 501的控制 端为计算机 7。 在行程开关 205感应到电磁线圈时， 行程开关 205向第一步进电机 501的控制端传递反向旋转信号， 以控制第一步进电机 501反向旋转。
[0031] 给料装置包括料斗 211、 第二步进电机 502、 搅拌轴 212、 进料管 216、 进料勺 21
3和出料管 214。
[0032] 喷射器支架 201上经料斗支架 215装配料斗 211， 料斗 211的一侧设置第二步进电 机 502， 第二步进电机 502的输出轴同轴连接搅拌轴 212。 搅拌轴 212的径向等间 距设置多个进料管 216 , 进料管 216的一端设置进料勺 213。 进料勺 213位于料斗 2 11内的空间， 进料管 216的另一端均连通出料管 214的一端， 出料管 214的另一端 位于料槽 206直线往复运动位置的上方。 第二步进电机 502带动搅拌轴 212转动， 进料勺 213挖取料斗 211中的混凝土浆料中的单颗粒骨料。 装料齿条 203直线往复 运动频率与搅拌轴 212旋转频率呈同步的倍数关系， 单颗粒骨料进入进料管 216 并从出料管 214落入料槽 206内。
[0033] 受喷装置包括底座 401、 受喷框架 402、 受喷面板 409、 密闭水箱 406、 竖直导轨 403、 水管支撑杆 404、 水管 407和喷嘴 405。 底座 401上设置受喷框架 402， 受喷 框架 402上设置受喷面板 409。 在试验之前， 先受喷面板 409上喷涂混凝土浆料， 模拟工程正在喷涂的混凝土墙面， 进而在试验中确定单颗粒骨料喷射到混凝土 墙面上的回弹与粘附参数。
[0034] 受喷框架 402的两侧布置竖直导轨 403， 本实施例的竖直导轨 403为竖直齿条。
水管支撑杆 404的两端滑动连接竖直导轨 403， 水管支撑杆 404的两端均设置有第 三步进电机 503， 第三步进电机 503经第二驱动齿轮 408啮合竖直齿条 403。 第三 步进电机 503驱动水管支撑杆 404沿竖直导轨 403在竖直方向往复移动。 水管支撑 杆 404上布置多个水管 407。 水管 407的一端经管路 （图中省略） 连接密闭水箱 40 6的下端， 水管 407的另一端朝向受喷面板 409 , 水管 407的另一端设置喷嘴 405， 喷嘴 405的射流方向与受喷面板 409呈 30。倾角。 在一次试验结束后， 在第三步进 电机 503驱动下， 水管支撑杆 404在竖直方向往复移动， 喷嘴 405对受喷面板 409 上的混凝土浆料冲洗。
[0035] 空气压缩机 101的输出端经电磁换向阀 102分别连接一路风管 103和另一路风管 1 03。 经电磁换向阀 102切换控制风流。 空气压缩机 101的输出端的一路风管 103经 管接头 104连接喷射管 202, 空气压缩机 101为喷射管 202提供高压空气。 空气压 缩机 101的输出端的另一路风管 103连接密闭水箱 406的上端， 空气压缩机 101产 生的高压空气将密闭水箱 406中的水经管路压入水管 407。
[0036] 计算机 7经信号电缆分别信号连接第一步进电机 501、 第二步进电机 502、 第三 步进电机 503、 第四步进电机 504和第五步进电机 505， 由计算机 7控制各步进电 机的动作。
[0037] 本实施例的湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平台， 调整好喷射 管 202的喷射位置和角度， 从料斗 211取出单颗粒骨料放入料槽 206， 喷射管 202 的喷射端喷射出的高压空气将料槽 206中的单颗粒骨料喷射出去射向受喷装置的 受喷面板 409,单颗骨料在受喷面板 409回弹或粘附在受喷面板 409上。 [0038] 高速摄像机 6设置于试验台架的外侧， 高速摄像机 6朝向单颗粒骨料的喷射方向 以及单颗粒骨料喷射到受喷面板 409的回弹方向， 高速摄像机对单颗粒骨料的喷 射和回弹进行粒子追踪。
[0039] 计算机 7经信号电缆信号连接高速摄像机 6， 以读取高速摄像机 6的粒子追踪数 据， 由粒子追踪数据计算得到单颗粒骨料喷射出的初始速度 V0、 从受喷面板 409 回弹回来的速度 V以及单颗粒骨料的运行轨迹， 以确定单颗粒骨料从喷射出至回 弹回来的能量损失。
[0040] 当然， 上述说明并非是对本发明的限制， 本发明也并不仅限于上述举例， 本技 术领域的技术人员在本发明的实质范围内所做出的变化、 改型、 添加或替换， 也应属于本发明的保护范围。

Claims

权利要求书
[权利要求 1] 一种湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平台， 其特征在 于： 湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平台包括试验台 架、 粒子喷射器、 给料装置、 受喷装置、 空气压缩机、 高速摄像机和 计算机； 试验台架包括水平支架、 竖直支架和支撑杆， 水平支架上沿 前后方向布置有水平轨道， 竖直支架的下端滑动连接水平轨道， 竖直 支架上沿竖直方向布置有竖直轨道， 支撑杆滑动连接竖直轨道， 支撑 杆上滑动连接有支撑滑块， 支撑滑块上设置有旋转块， 旋转块可相对 于支撑滑块上下摆动； 粒子喷射器包括设置于旋转块上的喷射器支架 和设置于喷射器支架上的第一步进电机、 齿轮、 装料齿条、 喷射管和 行程开关， 第一步进电机经齿轮驱动装料齿条直线往复运动， 装料齿 条的上表面等间距开设有多个料槽， 喷射管的喷射端的中心处与料槽 位于同一水平位置， 装料齿条的两端设置行程开关， 喷射器支架的两 端设置与行程开关感应的电磁线圈， 行程开关信号连接第一步进电机 的控制端； 给料装置包括料斗、 第二步进电机、 搅拌轴、 进料管、 进 料勺和出料管， 料斗设置于喷射器支架上， 料斗的一侧设置第二步进 电机， 第二步进电机的输出轴同轴连接搅拌轴， 搅拌轴的径向等间距 设置多个进料管， 进料管的一端设置进料勺， 进料勺位于料斗内的空 间， 进料管的另一端均连通出料管的一端， 出料管的另一端位于料槽 直线往复运动位置的上方； 受喷装置包括底座、 受喷框架和受喷面板 ， 底座上设置受喷框架， 受喷框架上设置受喷面板； 空气压缩机的输 出端的一路风管经管接头连接喷射管； 高速摄像机设置于试验台架的 外侧， 高速摄像机朝向单颗粒骨料的喷射方向以及单颗粒骨料喷射到 受喷面板的回弹方向； 计算机信号连接高速摄像机。
[权利要求 2] 根据权利要求 1所述的湿式混凝土喷射单颗粒骨料回弹与粘附机理试 验平台， 其特征在于： 受喷装置还包括密闭水箱、 竖直导轨、 水管支 撑杆、 水管和喷嘴， 空气压缩机的输出端的另一路风管连接密闭水箱 ， 受喷框架的两侧布置竖直导轨， 水管支撑杆的两端滑动连接竖直导 轨， 水管支撑杆上布置多个水管， 水管的一端经管路连接密闭水箱， 水管的另一端设置喷嘴且水管的另一端朝向受喷面板。
[权利要求 3] 根据权利要求 2所述的湿式混凝土喷射单颗粒骨料回弹与粘附机理试 验平台， 其特征在于： 竖直导轨为竖直齿条， 水管支撑杆的两端均设 置有第三步进电机， 第三步进电机经齿轮啮合竖直齿条。
[权利要求 4] 根据权利要求 3所述的湿式混凝土喷射单颗粒骨料回弹与粘附机理试 验平台， 其特征在于： 计算机信号连接第三步进电机。
[权利要求 5] 根据权利要求 2所述的湿式混凝土喷射单颗粒骨料回弹与粘附机理试 验平台， 其特征在于： 空气压缩机的输出端经电磁换向阀分别连接一 路风管和另一路风管。
[权利要求 6] 根据权利要求 1所述的湿式混凝土喷射单颗粒骨料回弹与粘附机理试 验平台， 其特征在于： 计算机分别信号连接第一步进电机和第二步进 电机。
[权利要求 7] 根据权利要求 1所述的湿式混凝土喷射单颗粒骨料回弹与粘附机理试 验平台， 其特征在于： 水平支架上于水平轨道的两端分别设置有第四 步进电机， 第四步进电机的输出轴连接有线轮， 线轮上缠绕有线缆， 线缆的末端连接竖直支架的下端。
[权利要求 8] 根据权利要求 7所述的湿式混凝土喷射单颗粒骨料回弹与粘附机理试 验平台， 其特征在于： 计算机信号连接第四步进电机。
[权利要求 9] 根据权利要求 1所述的湿式混凝土喷射单颗粒骨料回弹与粘附机理试 验平台， 其特征在于： 竖直支架上于竖直轨道的上端设置有第五步进 电机， 第五步进电机的输出轴连接有线轮， 线轮上缠绕有线缆， 线缆 的末端连接支撑杆。
[权利要求 10] 根据权利要求 9所述的湿式混凝土喷射单颗粒骨料回弹与粘附机理试 验平台， 其特征在于： 计算机信号连接第五步进电机。
PCT/CN2018/120206 2018-08-28 2018-12-11 湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平台 Ceased WO2020042423A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ZA2021/01259A ZA202101259B (en) 2018-08-28 2021-02-24 Wet concrete spraying single-particle aggregate rebound and adhesion mechanism testing platform

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810985695.1A CN109187538B (zh) 2018-08-28 2018-08-28 湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平台
CN201810985695.1 2018-08-28

Publications (1)

Publication Number Publication Date
WO2020042423A1 true WO2020042423A1 (zh) 2020-03-05

Family

ID=64916269

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/120206 Ceased WO2020042423A1 (zh) 2018-08-28 2018-12-11 湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平台

Country Status (3)

Country Link
CN (1) CN109187538B (zh)
WO (1) WO2020042423A1 (zh)
ZA (1) ZA202101259B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115308209A (zh) * 2022-08-09 2022-11-08 山东科技大学 引气新拌混凝土气泡实时观察装置及方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114324035A (zh) * 2021-12-30 2022-04-12 山东科技大学 适用不同地层的喷射混凝土回弹率试验装置及其试验方法

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2197411Y (zh) * 1994-04-15 1995-05-17 王朝利 多头湿式混凝土喷射机
JP2004100403A (ja) * 2002-09-13 2004-04-02 Daiwa Kogyo Kk 透水性コンクリートの吹付工法及びその装置
CN200978675Y (zh) * 2006-10-08 2007-11-21 郑州知信机电科技开发有限公司 一种新型井巷用混凝土湿喷工艺装备
CN101693238A (zh) * 2009-10-29 2010-04-14 沙健 多种单一粒级石料的筛分装置及筛分方法
CN205132113U (zh) * 2015-11-27 2016-04-06 广东工业大学 趣味糖果盒
CN205315013U (zh) * 2016-01-05 2016-06-15 山东科技大学 一种混凝土湿喷机喷射支架
CN105890888A (zh) * 2016-04-14 2016-08-24 山东科技大学 混凝土湿喷机喷头射流结构测试平台
CN106638558A (zh) * 2016-11-18 2017-05-10 华北水利水电大学 土木工程用高压喷射注浆装置
CN206490991U (zh) * 2016-08-30 2017-09-15 王俊义 玉米精量播种器
CN206577721U (zh) * 2017-03-23 2017-10-24 巩义市光明化工有限公司 一种支撑剂生产自动配料系统
CN108031521A (zh) * 2017-11-29 2018-05-15 重庆成维轻质墙板有限公司 陶粒送料装置
US20180186032A1 (en) * 2015-06-30 2018-07-05 Eurl Baumer Damien System and method for spraying lightweight insulating concrete

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011094812A (ja) * 2009-10-27 2011-05-12 Shinagawa Refractories Co Ltd プラスチック耐火物吹付け装置及び施工方法
CN202882941U (zh) * 2012-06-27 2013-04-17 丁钟宇 矿用混凝土搅拌喷射机
CN102828757A (zh) * 2012-08-30 2012-12-19 三一重工股份有限公司 预搅拌系统及湿喷机
CN203189037U (zh) * 2013-05-03 2013-09-11 辛世行 环保型混凝土湿喷机

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2197411Y (zh) * 1994-04-15 1995-05-17 王朝利 多头湿式混凝土喷射机
JP2004100403A (ja) * 2002-09-13 2004-04-02 Daiwa Kogyo Kk 透水性コンクリートの吹付工法及びその装置
CN200978675Y (zh) * 2006-10-08 2007-11-21 郑州知信机电科技开发有限公司 一种新型井巷用混凝土湿喷工艺装备
CN101693238A (zh) * 2009-10-29 2010-04-14 沙健 多种单一粒级石料的筛分装置及筛分方法
US20180186032A1 (en) * 2015-06-30 2018-07-05 Eurl Baumer Damien System and method for spraying lightweight insulating concrete
CN205132113U (zh) * 2015-11-27 2016-04-06 广东工业大学 趣味糖果盒
CN205315013U (zh) * 2016-01-05 2016-06-15 山东科技大学 一种混凝土湿喷机喷射支架
CN105890888A (zh) * 2016-04-14 2016-08-24 山东科技大学 混凝土湿喷机喷头射流结构测试平台
CN206490991U (zh) * 2016-08-30 2017-09-15 王俊义 玉米精量播种器
CN106638558A (zh) * 2016-11-18 2017-05-10 华北水利水电大学 土木工程用高压喷射注浆装置
CN206577721U (zh) * 2017-03-23 2017-10-24 巩义市光明化工有限公司 一种支撑剂生产自动配料系统
CN108031521A (zh) * 2017-11-29 2018-05-15 重庆成维轻质墙板有限公司 陶粒送料装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115308209A (zh) * 2022-08-09 2022-11-08 山东科技大学 引气新拌混凝土气泡实时观察装置及方法

Also Published As

Publication number Publication date
CN109187538A (zh) 2019-01-11
CN109187538B (zh) 2019-06-28
ZA202101259B (en) 2021-03-31

Similar Documents

Publication Publication Date Title
CN105083993B (zh) 一种波形垫圈的取料送料机构
WO2020042423A1 (zh) 湿式混凝土喷射单颗粒骨料回弹与粘附机理试验平台
CN109682725B (zh) 参数可调型微小液滴发生装置及其使用方法
CN118321048A (zh) 一种电池加工用涂覆装置
CN206676779U (zh) 钢球清洗机
CN205518809U (zh) 一种具有多级喷水机构的立体洗瓶机
CN206838559U (zh) 便于调节的钢球清洗机
CN202481376U (zh) 机械式振动输送器及数粒机
CN206509875U (zh) 一种瓷砖复合运动轨迹抛光装置
CN219237608U (zh) 一种耐磨钢球分装转运装置
WO2020042424A1 (zh) 混凝土单颗粒骨料给料喷射器
CN209380970U (zh) 一种往复运动机构及拌胶机
CN218260188U (zh) 一种干混砂浆防离析卸料装置
CN109129811B (zh) 一种往复运动机构及拌胶机
CN118491760A (zh) 一种工件耐磨抗蚀涂层的超音速喷涂装置
CN216299666U (zh) 一种双卧轴混凝土搅拌机
CN108890844B (zh) 一种拌胶机
CN205969971U (zh) 无级变速多材料超声微滴喷射增材制造装置
CN110470495A (zh) 常压喷雾试验台
CN223337044U (zh) 一种烟囱式细度模数调节和降尘装置
CN110060947B (zh) 一种斜摆放光伏板水冲击甩动式复合清洁装置
CN116163767A (zh) 一种隧道初期支护喷射混凝土回弹量控制方法
CN102151815A (zh) 离心式浇铸模具除尘装置
CN201598334U (zh) 酸洗线盘圆冲洗装置
CN209504404U (zh) 一种拌胶机

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18931374

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18931374

Country of ref document: EP

Kind code of ref document: A1