CN108756245B

CN108756245B - Method of pouring concrete by step-by-step pouring hopper for large-graded aggregate concrete

Info

Publication number: CN108756245B
Application number: CN201810522087.7A
Authority: CN
Inventors: 伍凯; 张贺; 祁皓; 杨程; 李辉
Original assignee: Hohai University HHU
Current assignee: Hohai University HHU
Priority date: 2018-05-28
Filing date: 2018-05-28
Publication date: 2020-05-22
Anticipated expiration: 2038-05-28
Also published as: CN108756245A

Abstract

The invention discloses a method for pouring concrete in a step-by-step pouring hopper for large-scale aggregate concrete, which comprises a main bucket and a support plate; the main bucket is divided into a plurality of compartments by a partition compartment in the main bucket, and each compartment can Different ingredients are placed, each warehouse is connected with the cloth nozzle below, the arc gate is set under the main bucket, the arc gate can slide in the slot set between the cloth nozzle and the main bucket, and the arc gate The gate connecting rod is connected, and the arc gate connecting rod is fixedly connected to the pin shaft. The gear at the end of the pin shaft meshes with the motor gear below the motor. The motor gear drives the pin shaft to rotate and further drives the arc gate connecting rod to rotate, thereby making the arc gate Rotate a certain angle to control the discharge of different silos.

Description

Method for pouring concrete by step by using large-scale aggregate concrete pouring hopper

Technical Field

The invention relates to a concrete construction pouring method and a concrete construction pouring device. In particular to a hopper for pouring large-scale aggregate concrete step by step.

Background

In engineering, large-scale concrete is often applied. The large-scale concrete refers to concrete adopting coarse aggregate with the diameter of more than or equal to 100mm, and the concrete has the characteristics of high strength and strong anti-shrinkage capability. The concrete is mainly applied to pouring of large-volume concrete projects such as dams, road beds, underground continuous walls, floor slab conversion layers and the like. Because the aggregate has larger particle size and weight, the concrete is different from common concrete, and the following two problems exist in the construction and pouring process of the concrete: 1. the large-scale concrete aggregate has too large particle size and cannot be stirred and pumped by a stirrer like common extremely-mixed concrete; 2. in the pouring process, the self weight of the aggregate is too large, and sinking is easy to occur, so that the concrete is layered, and the distribution of the aggregate is not uniform. For the above problems, no better solution is available at present.

Disclosure of Invention

The purpose of the invention is as follows: the invention provides a hopper for pouring large-scale aggregate concrete step by step and a method for pouring concrete by using the hopper; the hopper is simple in structure, reasonable in design, convenient to use and operate, large in size, and capable of solving the problems that large-scale aggregate concrete cannot be pumped and the aggregates sink in a certain pouring sequence, so that the aggregates of the large-scale aggregate concrete are uniformly distributed in the pouring process, and layering does not occur.

The technical scheme is as follows: a hopper for pouring large-grade aggregate concrete step by step is divided into 3 bins, cement paste bins are arranged on two sides of the hopper, fine aggregate concrete which is uniformly stirred is filled in the cement paste bins, and aggregate bins are arranged in the middle of the hopper and used for placing large-diameter aggregates. 3 feed bins are opened and closed through an arc door control to motor control arc door, the arc door rotates and opens first cement thick liquid storehouse, aggregate storehouse and second cement thick liquid storehouse in proper order, releases the aggregate in the different storehouses in proper order. And controlling the pouring sequence of the concrete according to the opening sequence of different bins. Thereby solving the segregation problem of concrete. At the same time, with this hopper, a specific pouring sequence should be followed: pouring for the first time, opening a first cement mortar bin, and pouring cement mortar for bottoming; the material distribution is performed for the second time, the gate is opened to open the second bin, the aggregate with the enlarged diameter is distributed, the aggregate covers the cement mortar primed for the last time, and the aggregate can sink into the mortar; and finally, pouring for the third time, continuously sliding the gate, opening a third cement mortar bin, and filling gaps among the large-grade aggregate and the covering aggregate in the process of distributing materials for the third time by using cement mortar.

Wherein, pour the hopper bucket body by the main fill with fix the cloth mouth in the main bottom of fighting and constitute, there is a radial gate in the centre to be used for sealing the main bottom of fighting, by opening and close of three feed bin of a radial gate control, the appearance of main fill and cloth mouth is the type of falling four-sided terrace, the main wide curb plate of fighting by two relative settings and two narrow curb plates of relative settings constitute.

The radial gate is installed on the hopper through two rotary fixing devices, the two rotary fixing devices are identical in structure and are symmetrically arranged, and each rotary fixing device comprises an inner fixing plate, an outer fixing plate, a pin shaft gear, a radial gate connecting plate and a radial gate connecting rod. The inner fixing plate is fixed on the inner side of the main hopper steel plate, the outer fixing plate is fixed on the outer side of the main hopper steel plate, the pin shaft is rotatably connected with the inner fixing plate and the outer fixing plate, the pin shaft gear is fixed on the pin shaft, one end of the radial gate connecting plate is fixedly connected with the pin shaft, the other end of the radial gate connecting plate is fixedly connected with one end of the radial gate connecting rod, and the other end of the radial gate.

A supporting plate is fixedly mounted at the top of a main hopper of the large-scale aggregate concrete step-by-step pouring hopper and can be used for preventing mortar or aggregate in the main hopper from seeping out.

The lower part of the main hopper of the step-by-step pouring hopper for the large-scale aggregate concrete is fixedly welded with a material distributing nozzle.

The main hopper of the stepped pouring hopper for the large-scale aggregate concrete is divided into three bins: the cement mortar system comprises a first cement mortar bin, a large-scale aggregate bin and a second cement mortar bin.

Foretell hopper is pour step by step to large-scale aggregate concrete, motor pass through motor connection backing plate and fix in one side of main fill wide curb plate, motor gear and round pin axle gear coupling drive round pin axle gear through the motor rotation and rotate to control radial gate and follow the seam and slide.

According to the hopper for pouring the large-grade aggregate concrete step by step, the next bin can be opened only by completely emptying the materials in the previous bin in the pouring process.

According to the hopper for pouring the large-scale aggregate concrete step by step, when the hopper is used for finishing one complete pouring process, three times of blanking are required: and (3) first-time cloth: opening a first cement mortar bin, and pouring cement mortar; the second distribution, namely opening a large-scale aggregate bin and distributing large-scale aggregates on the cement mortar; and (3) third-time cloth: and opening a second cement mortar bin, and pouring cement mortar on the large-scale aggregate for covering.

The hopper is poured to foretell large-scale aggregate concrete substep, and three feed bins of main fill are arranged along the broadplate direction.

Has the advantages that:

1. the invention has reasonable structural design and convenient use and operation;

2. the invention has the first and the second cement mortar bins and the large-scale aggregate bin, and cement mortar and large-scale aggregate are separately and temporarily stored, so that the layering phenomenon caused by mixing the two materials is avoided;

3. the invention solves the problem of segregation of the large-scale concrete in the casting process, and can store the aggregate and pour the concrete;

4. the invention has simple force transmission and high structure reliability.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a left side view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a state structure diagram of the first pass of the fabric of the present invention;

FIG. 5 is a view showing a state structure of the second pass of the present invention;

FIG. 6 is a structural view showing a state of the third fabric of the present invention.

Detailed Description

As shown in figure 1, the hopper for pouring the large-scale aggregate concrete step by step comprises a support plate 1, a main hopper 2, a radial gate 5 and a distribution nozzle 6.

The support plate 1 is fixedly arranged on the main hopper 2 to reinforce the structure of the main hopper 2. The main hopper 2 is a cylinder with upper and lower openings. The main 2 below exits of fighting are provided with radial gate 5, and radial gate 5 can the shutoff main 2 below openings of fighting, and main 2 below fixedly connected with cloth mouth 6 of fighting, the main lower part opening and the cloth mouth 6 intercommunication of fighting 2, and radial gate 5 can slide between the seam that sets up between cloth mouth 6 and main 2 of fighting. A first partition board 7-1 and a second partition board 7-2 are sequentially arranged in the main hopper 2 along the opening direction of the radial gate 5 to divide the main hopper 2 into a first cement mortar bin 2-1, a large-scale aggregate bin 2-2 and a second cement mortar bin 2-3. The first cement mortar bin 2-1 and the second cement mortar bin 2-3 located on two sides are used for storing cement mortar, and the large-scale aggregate bin 2-2 is used for storing large-scale aggregate to be poured.

As shown in fig. 1, the radial gate 5 is rotatably connected to the main bucket 2 by a rotation fixing means. The rotary fixing device comprises an outer fixing plate 4-1, an inner fixing plate 4-2, a first pin shaft 4-3, a second pin shaft 4-4, a pin shaft gear 4-5, an arc gate connecting plate 4-6 and an arc gate connecting rod 4-7; the radial gate 5 is fixedly connected with a radial gate connecting rod 4-7, the radial gate connecting rod 4-7 is fixedly connected with a pin shaft through a radial gate connecting plate 4-6, the pin shaft is rotatably connected with the main hopper 2, a pin shaft gear 4-5 is arranged at the extending end of the pin shaft, the pin shaft gear 4-5 is coupled with a motor gear 3-2 on the motor 3-1, and the motor 3-1 drives the pin shaft gear 4-5 to rotate when running, so that the pin shaft is further driven to rotate.

As shown in fig. 1, the radial gate connecting rods 4-7 are composed of 3 connecting rods, which are respectively connected to both ends and the middle part of the radial gate 5, so that the radial gate 5 and the radial gate connecting rods can be more stably connected.

As shown in figure 2, two radial gate connecting rods 4-7 and two pin shafts are symmetrically distributed on two sides of the main hopper 2. Wherein the pin gear 4-5 is fixed on the first pin 4-3.

As shown in figure 2, the pin shaft is rotatably connected to the main hopper 2 through a rotary fixing member, the rotary fixing member comprises an outer fixing plate 4-1 and an inner fixing plate 4-2, the inner fixing plate 4-2 is fixed on the inner side of a steel plate of the main hopper 2, the outer fixing plate 4-1 is fixed on the outer side of the steel plate of the main hopper 2, and the pin shaft is rotatably connected with the inner fixing plate 4-2 and the outer fixing plate 4-1.

As shown in fig. 3, the horizontal cross section of the main hopper 2 is rectangular, and the main hopper 2 is composed of two opposite wide side plates 2-4 and two opposite narrow side plates 2-5, which correspond to the length and width of the rectangular cross section. Wherein, the motor 3-1 is fixed on one side of the wide side plate 2-4 of the main bucket 2 through a motor connecting backing plate 3-3. The two groups of radial gate connecting rods 4-7 and the pin shaft are respectively and fixedly connected to the two wide side plates 2-4. The slot is arranged below two opposite wide side plates 2-4 and one narrow side plate 2-5, and the other narrow side plate 2-5 is fixedly connected with the cloth nozzle 6. Therefore, the radial gate 5 is firstly opened outwards along the bottom of the wide side plate 2-4 and finally is completely separated from the lower part of the narrow side plate at one side. The structure can enlarge the motion stroke of the radial gate 5, and the period of the motor for shutting down and opening is prolonged.

In order to make the raw material in each chamber fall more easily, the main hopper 2 has a rectangular frustum structure as a whole, and has a small outlet cross-sectional area, and as shown in fig. 1, the nozzle 6 is inclined in the opening direction of the lock gate 5, and has a tapered structure with a large top and a small bottom as a whole.

A method for pouring concrete by using the large-scale aggregate concrete distribution pouring hopper comprises the following steps:

step 1) respectively pouring cement mortar into a first cement mortar bin 2-1 and a second cement mortar bin 2-3, and pouring a large-grade aggregate into a large-grade aggregate bin 2-2;

step 2), first-time material distribution: controlling a motor 3-1 to be started, driving an arc gate 5 to rotate for a certain angle, then starting a first cement mortar bin 2-1, controlling the motor 3-1 to be stopped at the moment, and uniformly pouring cement mortar in the bin by guiding a material distribution nozzle 6;

step 3) second spreading materials, wherein after cement mortar in the first bin is completely poured, the motor 3-1 is controlled to be started, the radial gate 5 continues to rotate until the large-scale aggregate bin 2-2 is started, the second cement mortar bin 2-3 is in a closed state, the motor 3-1 is controlled to be closed, and large-scale aggregate is uniformly distributed on the cement mortar which is just poured;

step 4), distributing for the third time: and after the large-scale aggregate bins are completely arranged, controlling the motor 3-1 to open the second cement mortar bin 2-3, uniformly pouring cement mortar on the just-poured large-scale aggregate for covering, and vibrating by adopting a vibrating rod.

Claims

1. the method for pouring concrete by pouring hopper step by step with large-scale aggregate concrete, it is characterized in that: comprise main bucket (2), arc gate (5) and distributing nozzle (6), in main bucket (2), be provided with partition The warehouse board divides the interior of the main bucket (2) into a plurality of warehouses, an arc gate (5) is arranged at the exit below the main bucket (2), and a cloth nozzle (6) is fixedly connected under the main bucket (2). The lower opening of the bucket (2) is communicated with the distribution nozzle (6), and the arc-shaped gate (5) slides between the slots provided between the distribution nozzle (6) and the main bucket (2); the arc-shaped gate (5) Connected with the arc gate connecting rod (4-7), the arc gate connecting rod (4-7) is fixedly connected to the pin shaft, the pin shaft is rotatably connected to the main bucket (2), and the extension end of the pin shaft is provided There is a pin gear (4-5), the pin gear (4-5) meshes with the motor gear (3-2) on the motor (3-1), and the motor (3-1) drives the pin gear when running (4-5) rotate, thereby further drive the pin shaft to rotate; the method for pouring concrete comprises the steps:

Step 1) Pour cement mortar into the first cement mortar silo (2-1) and the second cement mortar silo (2-3) respectively, and pour large gradation aggregate into the large gradation aggregate silo (2-2). aggregate;

Step 2) The first distribution material: control the motor (3-1) to turn on, drive the arc gate (5) to rotate at a certain angle, and then open the first cement mortar warehouse (2-1), and control the motor (3-1) to turn off at this time. stop, and by guiding the distributing nozzle (6), the cement mortar in the first cement mortar warehouse (2-1) is evenly poured;

Step 3) The second distribution material: when all the cement mortar in the first cement mortar warehouse (2-1) is poured, the control motor (3-1) is turned on, and the arc gate (5) continues to rotate until the large-scale bone distribution is completed. The silo (2-2) is opened, while the second cement mortar silo (2-3) is in a closed state, the control motor (3-1) is turned off, and large-scale aggregates are evenly distributed on the freshly poured cement mortar;

Step 4) The third distribution material: when all the large graded aggregate bins are arranged, control the motor (3-1) to open the second cement mortar bin (2-3), and evenly distribute the large graded aggregate on the just poured Pour cement mortar cover, and vibrate with vibrating rod.

2. The method for pouring concrete in a step-by-step pouring hopper for large-graded aggregate concrete according to claim 1, characterized in that: the main bucket (2) is sequentially provided with a second gate along the opening direction of the arc gate (5). A partition board (7-1) and a second partition board (7-2) separate the main bucket (2) into a first cement mortar warehouse (2-1), a large graded aggregate warehouse (2-2) , the second cement mortar warehouse (2-3).

3. The method for pouring concrete in a step-by-step pouring hopper for large-graded aggregate concrete according to claim 1, characterized in that: the arc-shaped gate connecting rod (4-7) and the pin shaft have two symmetrical distributions on both sides of the main bucket (2).

4. The method for pouring concrete in a step-by-step pouring hopper for large-graded aggregate concrete according to claim 1, characterized in that: the pin shaft is rotatably connected to the main bucket (2) through a rotating fixing member, and the rotating fixing The parts include an outer fixing plate (4-1) and an inner fixing plate (4-2), the inner fixing plate (4-2) is fixed on the inner side of the steel plate of the main bucket (2), and the outer fixing plate (4-1) It is fixed on the outer side of the steel plate of the main bucket (2), and the pin shaft is rotatably connected with the inner fixing plate (4-2) and the outer fixing plate (4-1).

5. The method for pouring concrete with a step-by-step pouring hopper for large-graded aggregate concrete according to claim 1, wherein the horizontal cross-sectional shape of the main bucket (2) is a rectangle, and the main bucket (2) consists of two hoppers. It is composed of two oppositely arranged wide side plates (2-4) and two oppositely arranged narrow side plates (2-5), respectively corresponding to the positions of the length and width of the rectangular section.

6. The method for pouring concrete in a step-by-step pouring hopper for large-graded aggregate concrete according to claim 5, characterized in that: the motor (3-1) is fixed on the main bucket through a motor connection pad (3-3). (2) One side of the wide side plate (2-4).

7. The method for pouring concrete in a step-by-step pouring hopper for large-graded aggregate concrete according to claim 5, wherein the slot is arranged on two opposite wide side plates (2-4) and one narrow side Below the plate (2-5), another narrow side plate (2-5) is fixedly connected with the cloth nozzle (6).

8 . The method for pouring concrete in a step-by-step hopper for large-graded aggregate concrete according to claim 5 , wherein the main bucket ( 2 ) is a quadrangular pyramid structure as a whole. 9 .