Full-automatic mold entering branch pipe device for secondary lining concrete pouring and mold entering method

Abstract

The invention relates to the technical field of concrete pouring, and provides a second lining concrete pouring full-automatic mold entering pipe dividing device and a mold entering method.The pipe dividing device comprises a pipe dividing box and a plug body, an opening is formed in one end of the pipe dividing box, a connecting inlet is formed in one side of the pipe dividing box, and a connecting outlet is formed in the other side of the pipe dividing box; the plug body is arranged in the branch pipe box and can slide in the direction close to or away from the opening, the plug body comprises a main plug and an auxiliary plug which are arranged in parallel, the main plug and the auxiliary plug are each provided with a through hole, when the main plug moves to the limit position away from the opening, the connecting inlet is communicated with the opening, and the connecting outlet is closed by the auxiliary plug; the connecting inlet and the connecting outlet are communicated through the through hole, and the opening is completely sealed by the main plug and the auxiliary plug. Concrete in the opening can be completely pushed into the pouring formwork, residues are avoided, cleaning in the pouring process is not needed, continuous pouring is conveniently achieved, and the formwork entering efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of concrete pouring, and in particular to a fully automatic mold-feeding pipe distribution device and a mold-feeding method for pouring secondary lining concrete. Background Art

[0002] In tunnel construction, the process of placing secondary lining concrete into the mold has gone through a process from manual shoveling to concentrated layered concrete placement by concrete delivery pump pipes. With the improvement of quality requirements, it has now developed into using concrete placing machines (rotary or parallel) to place concrete into the mold window by window, which solves the problem of uneven concrete quality caused by concentrated concrete placement at the process level. In order to achieve the switching of the main pipe and the mold entry pipe, a branch pipe device is usually provided at the mold entry. The current branch pipe methods include chute switching, S-swing pipe, and gate valve switching. The chute switching and S-swing pipe require manual operation for replacement, and although the gate valve switching can achieve automatic pipe replacement, after switching from one casting template to another, the mold entry pipe connected to the casting template concrete inlet of the previous branch pipe device will have residual concrete, which requires the mold entry pipe to be cleaned before casting the next casting template (otherwise the concrete in the mold entry pipe will be difficult to clean after solidification), and continuous casting cannot be achieved, resulting in low mold entry efficiency. Summary of the invention

[0003] The object of the present invention is to provide a fully automatic mold-feeding pipe distribution device and a mold-feeding method for pouring secondary lining concrete, so as to solve the above-mentioned defects of the prior art.

[0004] The present invention is achieved through the following technical solutions:

[0005] A fully automatic mold-feeding branch pipe device for pouring secondary lining concrete, comprising a branch pipe box and a plug body, one end of the branch pipe box is provided with an opening for docking with a concrete inlet on a pouring template, one side of the branch pipe box is provided with a connection inlet, and the other side of the branch pipe box is provided with a connection outlet, and the connection inlet and the connection outlet are used to connect a concrete pump pipe;

[0006] The plug body is arranged inside the branch box and can slide in a direction close to or away from the opening. The plug body includes a main plug and a secondary plug arranged in parallel. The main plug and the secondary plug are both provided with through holes. When the main plug moves to an extreme position away from the opening, the connection inlet is connected to the opening and the connection outlet is closed by the secondary plug. When the main plug moves to an extreme position close to the opening, the connection inlet and the connection outlet are connected through the through hole and the opening is completely closed by the main plug and the secondary plug.

[0007] Optionally, the main plug is connected to a main driving element for driving it to slide, and a protrusion is provided on the side of the secondary plug close to the main plug, and a slot is provided on the side of the main plug close to the secondary plug, and the protrusion extends into the slot to drive the secondary plug to slide when the main plug slides.

[0008] Optionally, a limiting block is provided on one side of the auxiliary plug close to the branch box, and the branch box is provided with a limiting groove for the limiting block to slide.

[0009] Optionally, the main plug is connected to a main driving element for driving the main plug to slide, and the auxiliary plug is provided with an auxiliary driving element for driving the auxiliary plug to slide.

[0010] Optionally, a support handle is provided on one side of the main plug close to the branch box, the branch box is provided with a slide groove for the support handle to slide, and the main driving element is arranged on the outside of the branch box and connected to the support handle.

[0011] Optionally, the main driving element is a hydraulic cylinder.

[0012] Optionally, a pressure sensor is provided on the end surface of the main plug close to the open end.

[0013] The present invention also provides a fully automatic mold pouring method for secondary lining concrete, which adopts any one of the branch pipe devices described above and comprises the following steps:

[0014] S1. Determine the path of the concrete pump pipe;

[0015] S2, disposing the branch pipe device at each mold inlet, installing the concrete pump pipe along the determined path, the branch pipe device is connected to the overall pipeline of the concrete pump pipe through the connecting inlet and the connecting outlet, and the open end is butted with the concrete inlet on the casting template;

[0016] S3, pumping concrete so that the concrete reaches the concrete inlet on the first casting formwork and enters the formwork;

[0017] S4, after the concrete in the first casting template exceeds the concrete inlet and reaches the pressure setting value, the branch pipe device corresponding to the first casting template performs pipeline conversion, so that the connection inlet and the connection outlet are connected through the through hole and the open port is completely closed by the main plug and the auxiliary plug, and the concrete reaches the next casting template through the concrete pump pipe;

[0018] S5. Repeat steps S3 and S4 until all casting forms are cast.

[0019] The technical solution of the present invention has at least the following advantages and beneficial effects: in the present invention, by switching the positions of the main plug and the auxiliary plug, the concrete branching is realized, and the mold entry pipe connected to the concrete inlet of the casting template is eliminated. The opening of the branch box is connected to the concrete inlet to replace the traditional mold entry pipe. In actual application, a branch pipe device is arranged at each casting template. After the casting of a casting template is completed, the branch pipe device corresponding to the casting template at this location performs pipeline conversion, and the concrete reaches the next casting template through the concrete pump pipe. When switching, the connection inlet and the connection outlet are connected through the through hole and the opening is completely closed by the main plug and the auxiliary plug, that is, the main plug and the auxiliary plug can completely push the concrete in the opening into the casting template to avoid residue, and there is no need to clean it during the casting process, which is convenient for continuous casting and improves the mold entry efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A cross-sectional view of a fully automatic mold-feeding pipe-dividing device for pouring secondary lining concrete provided by the present invention (the main plug moves to the extreme position close to the opening)

[0021] Figure 2 A cross-sectional view of a fully automatic mold-feeding pipe-dividing device for pouring secondary lining concrete provided by the present invention (the main plug moves to the extreme position away from the opening);

[0022] Figure numerals: 1- branch box, 101- connection inlet, 102- connection outlet, 103- opening, 104- slide groove, 105- limit groove, 2- main plug, 201- support handle, 202- slot, 3- auxiliary plug, 301- protrusion, 302- limit block, 4- main driving element, 5- concrete pump pipe. DETAILED DESCRIPTION

[0023] Example 1

[0024] refer to Figure 1 and Figure 2 A fully automatic mold-feeding branch pipe device for pouring secondary lining concrete comprises a branch pipe box 1 and a plug body.

[0025] One end of the branch box 1 is provided with an opening 103 for docking with the concrete inlet on the casting template. It is easy to understand that in actual application, the size of the opening 103 is docked with the same diameter as the concrete inlet to ensure that the concrete can be put into the mold by pressure. One side of the branch box 1 is provided with a connecting inlet 101, and the other side of the branch box 1 is provided with a connecting outlet 102. The connecting inlet 101 and the connecting outlet 102 are used to connect the concrete pump pipe 5. It should be understood that it is equivalent to the concrete pump pipe 5 being disconnected at the branch device. After the concrete pump pipe 5 is connected to the connecting inlet 101 and the connecting outlet 102, a passage is formed.

[0026] The plug body is arranged inside the branch box 1 and can slide in the direction close to or away from the opening 103. The plug body includes a main plug 2 and a secondary plug 3 arranged in parallel. Both the main plug 2 and the secondary plug 3 are provided with through holes. When the main plug 2 moves to the extreme position away from the opening 103 ( Figure 2 The connecting inlet 101 is connected to the opening 103 and the connecting outlet 102 is closed by the secondary plug 3. When the main plug 2 moves to the limit position close to the opening 103 ( Figure 1 In the state shown), the connecting inlet 101 and the connecting outlet 102 are connected through the through hole and the opening 103 is completely closed by the main plug 2 and the auxiliary plug 3.

[0027] In practical applications, branch pipe devices are arranged at each casting template. After the casting of a casting template is completed, the branch pipe device corresponding to the casting template at that location performs pipeline conversion, and the concrete reaches the next casting template through the concrete pump pipe 5. When switching, the connection inlet 101 and the connection outlet 102 are connected through the through hole and the opening 103 is completely closed by the main plug 2 and the auxiliary plug 3, that is, the main plug 2 and the auxiliary plug 3 can completely push the concrete in the opening 103 into the casting template to avoid residue, and there is no need to clean during the casting process, which is convenient for continuous casting and improves the mold entry efficiency.

[0028] It is worth noting that when the main plug 2 moves toward the opening 103, before the opening 103 is disconnected from the connecting inlet 101, the connecting outlet 102 is closed by the auxiliary plug 3 to prevent the concrete entering from the connecting inlet 101 from entering the opening 103 and the connecting outlet 102 at the same time, so that the opening 103 and the connecting outlet 102 are opened and closed alternately to ensure the singleness of the concrete flow direction.

[0029] In this embodiment, the main plug 2 and the auxiliary plug 3 realize the movement as follows: the main plug 2 is connected to a main driving element 4 for driving it to slide; a protrusion 301 is provided on the side of the auxiliary plug 3 close to the main plug 2; a card slot 202 is provided on the side of the main plug 2 close to the auxiliary plug 3; the protrusion 301 extends into the card slot 202; further, a limit block 302 is provided on the side of the auxiliary plug 3 close to the branch box 1; the branch box 1 is provided with a limit slot 105 for the limit block 302 to slide; the limit slot 105 cooperates with the limit block 302 to limit the extreme position of the auxiliary plug 3 in two directions. On the basis of the above, when the main plug 2 moves from the extreme position away from the opening 103 to the direction close to the opening 103, the main plug 2 moves first (at this time, the secondary plug 3 does not move, and the connection outlet 102 is always closed). After the end of the slot 202 away from the opening 103 contacts the protrusion 301, the secondary plug 3 follows the movement of the main plug 2 (it should be understood that at this time the main plug 2 has closed the connection inlet 101), gradually connecting the connection inlet 101 and the connection outlet 102 through the through hole. Similarly, when the main plug 2 moves from the extreme position close to the opening 103 to the direction away from the opening 103, the main plug 2 also moves first. After the end of the slot 202 close to the opening 103 contacts the protrusion 301, the secondary plug 3 follows the movement of the main plug 2.

[0030] As an option, in this embodiment, a handle 201 is provided on the side of the main plug 2 close to the branch box 1, and the branch box 1 is provided with a slide 104 for the handle 201 to slide. The main drive element 4 is provided on the outside of the branch box 1 and connected to the handle 201, and the main drive element 4 is a hydraulic cylinder. In other embodiments, the connection between the main drive element 4 and the main plug 2 can also adopt other structures. For example, if space permits, the main drive element 4 is provided at one end of the branch box 1 away from the opening 103, and the main drive element 4 is connected to the end of the main plug 2 away from the opening 103.

[0031] In this embodiment, a pressure sensor (not shown) is provided on the end surface of the main plug 2 near the open end 103, so as to automatically control the action of the main drive element 4 according to the detected pressure, and realize the automatic switching of the pipeline of the branch pipe device. As for the control threshold setting of the pressure sensor, since the rated pressure value of a conventional concrete pump is about 15MPa, the normal pumping pressure value of concrete is calculated as 8MPa, and the sum of the pressure value of the concrete inlet template panel (i.e., the pressure value detected by the pressure sensor) and the normal pumping pressure value does not exceed 70% of the rated pressure value of the concrete pump (i.e., 10.5MPa), the control threshold value of the pressure sensor is 10.5-8=2.5MPa, that is, after the pouring process, when the pressure sensor detects a pressure ≥2.5MPa, the main plug 2 and the auxiliary plug 3 can be controlled to act and the pipe can be replaced.

[0032] Example 2

[0033] The difference between this embodiment and embodiment 1 is that the main plug 2 and the auxiliary plug 3 realize movement in different ways. In this embodiment, the main plug 2 is connected to a main driving element 4 for driving its sliding, and the auxiliary plug 3 is provided with an auxiliary driving element for driving its sliding, that is, the main plug 2 does not realize linkage through the protrusion 301 and the slot 202 in embodiment 1, but moves independently through two driving elements. It should be understood that if the solution in this embodiment is adopted, the movement sequence requirements described in embodiment 1 should also be met. As an option, in this embodiment, both the main driving element 4 and the auxiliary driving element are selected as hydraulic cylinders.

[0034] Example 3

[0035] This embodiment provides a fully automatic mold pouring method for secondary lining concrete, using the branch pipe device provided in Example 1 (of course, in other embodiments, the method may also use the branch pipe device provided in Example 2), including the following steps:

[0036] S1, determine the path of the concrete pump pipe 5;

[0037] S2. A branch pipe device is configured at each mold inlet, and a concrete pump pipe 5 is installed along a determined path. The branch pipe device is connected to the overall pipeline of the concrete pump pipe 5 through a connecting inlet 101 and a connecting outlet 102, and an open port 103 is butted against a concrete inlet on the casting template;

[0038] In step S1 and step S2, when the secondary lining trolley is designed and manufactured, the layout of the concrete inlet is determined, and the layout position of the concrete pump pipe 5 is reserved on the trolley, or part of the concrete pump pipe 5 is directly fixed on the trolley during the trolley processing, and it should be ensured that the pipeline layout is reasonable and the installation is firm;

[0039] S3, pumping concrete so that the concrete reaches the concrete inlet on the first casting formwork and is incorporated into the formwork, i.e., pouring concrete into the first casting formwork;

[0040] S4, after the concrete in the first casting template exceeds the concrete inlet and reaches the pressure setting value (that is, the control threshold of the pressure sensor), the branch pipe device corresponding to the first casting template performs pipeline conversion (those skilled in the art can understand and implement that a control center is configured in actual application to control the operation of the main driving element 4 through the detection structure of the pressure sensor), so that the connection inlet 101 and the connection outlet 102 are connected through the through hole and the open port 103 is completely closed by the main plug 2 and the auxiliary plug 3, and the concrete reaches the next casting template through the concrete pump pipe 5;

[0041] S5, repeating steps S3 and S4 until all casting templates are cast, after the construction is completed, cleaning the concrete pump pipe 5, and cleaning the mouth of the opening 103 after the demolding is completed.

[0042] By using the above method for inserting the concrete into the mold, the main plug 2 and the auxiliary plug 3 can completely push the concrete in the opening 103 into the casting template to avoid residue, and there is no need to clean it during the casting process, which facilitates continuous casting and improves the efficiency of inserting the concrete into the mold.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fully automatic mold-feeding and pipe-distributing device for pouring secondary lining concrete, characterized in that: It includes a branch box and a plug body. One end of the branch box is provided with an opening for connecting to the concrete inlet on the casting template. One side of the branch box is provided with a connection inlet. The other side of the branch box is provided with a connection outlet. The connection inlet and the connection outlet are used to connect to the concrete pump pipe. The plug body is arranged inside the branch box and can slide in a direction close to or away from the opening. The plug body includes a main plug and a secondary plug arranged in parallel. The main plug and the secondary plug are both provided with through holes. When the main plug moves to an extreme position away from the opening, the connection inlet is connected to the opening and the connection outlet is closed by the secondary plug. When the main plug moves to an extreme position close to the opening, the connection inlet and the connection outlet are connected through the through hole and the opening is completely closed by the main plug and the secondary plug.

2. The fully automatic mold-feeding and pipe-dividing device for pouring secondary lining concrete according to claim 1 is characterized in that: The main plug is connected to a main driving element for driving it to slide, and a protrusion is provided on the side of the auxiliary plug close to the main plug, and a slot is provided on the side of the main plug close to the auxiliary plug. The protrusion extends into the slot to drive the auxiliary plug to slide when the main plug slides.

3. The fully automatic mold-feeding pipe-dividing device for pouring secondary lining concrete according to claim 2 is characterized in that: A limiting block is provided on one side of the auxiliary plug close to the branch box, and the branch box is provided with a limiting groove for the limiting block to slide.

4. The fully automatic mold-feeding and pipe-dividing device for pouring secondary lining concrete according to claim 1 is characterized in that: The main plug is connected to a main driving element for driving the main plug to slide, and the auxiliary plug is provided with an auxiliary driving element for driving the auxiliary plug to slide.

5. The fully automatic mold-feeding and pipe-dividing device for pouring secondary lining concrete according to any one of claims 2 to 4, characterized in that: A support handle is provided on one side of the main plug close to the branch box, and the branch box is provided with a slide groove for the support handle to slide. The main driving element is arranged on the outer side of the branch box and connected to the support handle.

6. The fully automatic mold-feeding and pipe-dividing device for pouring secondary lining concrete according to any one of claims 2 to 4, characterized in that: The main driving element is a hydraulic cylinder.

7. The fully automatic mold-feeding and pipe-dividing device for pouring secondary lining concrete according to any one of claims 1 to 4, characterized in that: A pressure sensor is provided on the end surface of the main plug close to the open end.

8. A fully automatic mold pouring method for secondary lining concrete, using the branch pipe device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Determine the path of the concrete pump pipe; S2, disposing the branch pipe device at each mold inlet, installing the concrete pump pipe along the determined path, the branch pipe device is connected to the overall pipeline of the concrete pump pipe through the connecting inlet and the connecting outlet, and the open end is butted with the concrete inlet on the casting template; S3, pumping concrete so that the concrete reaches the concrete inlet on the first casting formwork and enters the formwork; S4, after the concrete in the first casting template exceeds the concrete inlet and reaches the pressure setting value, the branch pipe device corresponding to the first casting template performs pipeline conversion, so that the connection inlet and the connection outlet are connected through the through hole and the open port is completely closed by the main plug and the auxiliary plug, and the concrete reaches the next casting template through the concrete pump pipe; S5. Repeat steps S3 and S4 until all casting forms are cast.

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