Secondary lining trolley pressure-in-mold pipeline system and construction method

Abstract

The invention discloses a secondary lining trolley pipeline system with a press-in mold and a construction method. The system comprises a middle pipeline mechanism and two side wall pipeline mechanisms. The side wall pipeline mechanism comprises a plurality of concrete pump pipes, a plurality of interlayer reversing valves and a plurality of left-right reversing valves; the plurality of concrete pump pipes form a concrete pumping path for carrying out concrete pouring operation on each pouring window; the interlayer reversing valve is connected with the concrete pump pipe located on the upper layer and the concrete pump pipe located on the lower layer so as to conduct interlayer switching control on the flowing direction of concrete, and the left and right reversing valves are connected with the concrete pump pipes of the two pouring windows of the same layer so as to conduct switching control on the left and right flowing directions of the concrete. The middle pipeline mechanism conveys concrete to the side wall pipeline mechanisms on the two sides through opposite adjustable distributing valves. According to the system, three switching valves are used, the pipeline path is simplified, the number of pump pipes and occupied trolley space are reduced, the pipe blocking probability is reduced, and concrete waste and pipeline cleaning water are greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel secondary lining construction, and in particular to a secondary lining trolley with a press-in mold pipeline system and a construction method. Background Art

[0002] The secondary lining of a tunnel is the air-facing surface after the tunnel enters operation, and its quality is directly related to operational safety. Casting of the secondary lining is an extremely important link in tunnel construction. After completing the positioning and binding of the steel bars, the secondary lining trolley and concrete distribution system are required to complete the casting of the tunnel secondary lining. Since the conventional top-down concrete pouring method cannot be used for the casting of the tunnel secondary lining, it must be poured from the bottom up from the side window, and finally the top punching operation is performed. Since there are a lot of steel bars in the internal space of the secondary lining, some sections have embedded parts, and the space of the secondary lining trolley is small, the construction is very difficult. The current secondary lining casting technology is prone to deformation and misalignment of the trolley, and the poured concrete is prone to vault cavities and loose concrete. Therefore, the cost of repairing the secondary lining per kilometer of tunnel is extremely high, causing great losses.

[0003] At present, tunnel construction specifications require that the entire pipeline be pressed into the window and poured layer by layer in the tunnel secondary lining construction process. The concrete pipeline system uses a multi-channel pump pipe arranged at a designated position on the trolley to deliver concrete to the designated window on time for window pouring.

[0004] There are many different types of material distribution pipeline structures currently used, mainly including a material distribution method with a press-in mold (i.e., fully enclosed) and a combination of a pump pipe and a chute or a string tube (i.e., an open type, such as Figure 1 Two types are shown).

[0005] like Figure 1 As shown in the figure, the open type (chute type) is the most commonly used type of distribution pipeline. Its main principle is to use a pump pipe to deliver concrete to an open chute or string tube position located on the side wall, and then use gravity to deliver concrete to a lower window position to complete the pouring. However, this type has many problems:

[0006] (1) When using a chute, the chute is an open structure. When the concrete has poor fluidity, the flow will stagnate, causing it to overflow from both sides;

[0007] (2) In order for concrete to flow normally, the angle of the chute must not be too small. If the windows on each floor are close together, the chute cannot be used.

[0008] (3) Since the chute has one-to-one access to the window, there are many pump pipes connected to it. The layout of the pump pipes in the trolley is very complicated, with many bends, which is easy to block the pipes;

[0009] (4) Although the serial tube mode can reduce the number of pump tubes to a certain extent (cooperating with the plug plate annular mechanism), the plug plate is prone to leakage of slurry, causing the plug plate to get stuck and unable to complete the reversal;

[0010] (5) Concrete residues are easily formed in the chute or string tube, causing blockage and affecting subsequent use;

[0011] (6) The chute form needs to be frequently installed and replaced during use, which increases the workload and affects work efficiency;

[0012] (7) This open cloth system cannot be used for windows with higher heights (such as spandrels and arch positions);

[0013] In summary, there are many disadvantages in using a chute or string tube in combination with a pump tube, so this method is not a future usage trend.

[0014] like Figure 2 As shown in the figure, the main structure of the pressure-into-mold method is that from the concrete placing machine docking port to the window, all pump pipes are used for docking and pouring. This mode can realize the pressure on the entire pouring path, and does not rely solely on gravity to make the concrete flow. This form has the following advantages:

[0015] (1) When the height difference of each window is small, there is no need to consider the situation where the angle is too small to affect the flow of concrete, because the flow of this form of slurry depends on pressure rather than gravity alone;

[0016] (2) For windows with higher height, normal pouring can also be carried out;

[0017] (3) The concrete poured in this way is dense and full, which is conducive to improving the quality of concrete pouring.

[0018] In summary, the pressed-in mold can adapt to more trolley window layout scenarios and fully comply with the construction principle of layered and window-by-window pouring of the tunnel secondary lining.

[0019] However, the currently used pressure-casting technology still has many problems:

[0020] (1) Each window on each floor needs to be equipped with a separate pipeline, which makes the internal pipeline layout of the trolley complex and dense, occupies a large internal space of the trolley, and makes it more difficult for construction workers to walk and operate;

[0021] (2) There are many elbows, which can easily cause pipeline blockage and it is difficult to find the location of the blockage;

[0022] (3) The large number of pipelines requires a large amount of water for cleaning, which generates a lot of concrete waste and causes environmental pollution;

[0023] (4) Even if some pipeline sections are shared to a certain extent with hoses, the number of pipelines cannot be effectively reduced. At the same time, hoses wear quickly and are expensive, which increases the cost of use;

[0024] (5) In addition, because the concrete resistance in the left and right pipes is uneven, the concrete pouring flow on both sides cannot be adjusted and cannot be controlled, so only one side can be poured;

[0025] (6) In order to meet the construction requirements during single-sided pouring, the pouring mouth needs to be frequently changed left and right, which greatly increases the labor workload and construction time. Otherwise, it is easy to cause the secondary lining trolley to shift and deform, and then form a large number of misalignments, reducing the structural safety reserve.

[0026] Based on the above analysis, it is urgently necessary to develop a secondary lining trolley with a press-in mold piping system and a construction method to solve one or more of the above-mentioned technical problems. Summary of the invention

[0027] The invention provides a secondary lining trolley with a press-in-mold pipeline system and a construction method.

[0028] To achieve the above-mentioned object, on the one hand, the present invention provides a second lining trolley with a press-in mold pipeline system, comprising: an intermediate pipeline mechanism and two side wall pipeline mechanisms connected to the intermediate pipeline mechanism;

[0029] The side wall pipeline mechanism includes a plurality of concrete pump pipes, a plurality of inter-layer reversing valves and a plurality of left and right reversing valves; the plurality of concrete pump pipes are used to form a concrete pumping path for performing concrete pouring operations on each pouring window; the inter-layer reversing valves are respectively connected to the concrete pump pipes located on the upper layer and the concrete pump pipes located on the lower layer to perform inter-layer switching control on the flow direction of the concrete, and the left and right reversing valves are respectively connected to the concrete pump pipes leading to the two pouring windows on the same layer to perform left and right flow switching control on the concrete;

[0030] The intermediate pipeline mechanism is used to transport concrete from the ground pump to the side wall pipeline mechanism.

[0031] Optionally, the interlayer reversing valve is a three-way structure, a rotatable reversing baffle is provided inside the interlayer reversing valve, and reversing handles connected to the reversing baffle are provided on both sides of the interlayer reversing valve;

[0032] The reversing baffle is driven to perform reversing movement by rotating the reversing handle, so as to switch the communication direction in the valve, thereby changing the flow direction of the concrete in the pipe.

[0033] Optionally, a movable reversing plate is provided inside the left-right reversing valve, and push-pull rod handles are provided on both sides of the left-right reversing valve, and the push-pull rod handles are connected to the reversing plate through a push-pull rod;

[0034] The reversing plate is moved by operating the push-pull rod handle to open or close the left and right channels in the valve.

[0035] Optionally, a pressure sensor for detecting the concrete pressure in the pipe is further provided in the interlayer reversing valve and / or the left-right reversing valve.

[0036] Optionally, when concrete pouring operations are performed on a pouring scene with four floors and four pouring windows on each floor, the side wall piping mechanism specifically includes: from top to bottom, a 4-way concrete pump pipe and two inter-layer reversing valves on the first floor; a 4-way concrete pump pipe, two left and right reversing valves and two inter-layer reversing valves on the second floor; a 4-way concrete pump pipe, two left and right reversing valves and two inter-layer reversing valves on the third floor; and a 4-way concrete pump pipe and two left and right reversing valves on the fourth floor.

[0037] Optionally, the intermediate pipeline mechanism includes an opposing adjustable material distribution valve and a rail-type material distribution trolley fixedly connected to the opposing adjustable material distribution valve, the rail-type material distribution trolley moves to drive the opposing adjustable material distribution valve to move longitudinally along the trolley, and the opposing adjustable material distribution valve is used to realize simultaneous material distribution and pouring to the opposite side wall pipeline mechanisms.

[0038] Optionally, when the pipe resistance in the side wall piping mechanisms on both sides is different or the concrete pouring requirements on both sides are different, the concrete flow in the side wall piping mechanisms on both sides is adjusted by the opposite adjustable dividing valve to achieve simultaneous pouring; and, the concrete flow in the side wall piping mechanisms on both sides is adjusted by the opposite adjustable dividing valve to be the same or different to meet construction requirements.

[0039] Optionally, the opposite adjustable distributing valve comprises a flow regulator and left and right flow dividing side pipes, wherein the flow regulator is located inside the opposite adjustable distributing valve and is used to adjust the flow of concrete in the left and right pipes;

[0040] The intermediate pipeline mechanism further includes a longitudinal motion track, the opposite adjustable material distribution valve is arranged on the longitudinal motion track, and the opposite adjustable material distribution valve moves longitudinally along the longitudinal motion track under the drive of the track-type material distribution trolley.

[0041] Optionally, the system further comprises a track-type pipe-pairing mechanism located on both sides of the top of the trolley, and the left and right branch side pipes are connected to the feed pipe of the side wall pipeline mechanism through the track-type pipe-pairing mechanism.

[0042] Optionally, the track-type pipe alignment mechanism includes a frame, left and right telescopic pipes, a travel drive module and an angle adjustment structure arranged on the frame, and a longitudinal travel track located below the frame;

[0043] The two ends of the left and right telescopic tubes are respectively connected to the left and right diversion side tubes and the feed pipe of the side wall pipeline mechanism; the angle adjustment structure is connected to the left and right telescopic tubes to adjust the pitch angle of the left and right telescopic tubes; the walking drive module is used to drive the left and right telescopic tubes to move along the longitudinal walking track.

[0044] On the other hand, the present invention also provides a construction method for a secondary lining trolley with a press-in mold pipeline system, the method comprising:

[0045] Step S1: Arrange the side wall pipe mechanism on both sides according to the number of layers of the casting scene and the number of casting windows on each layer;

[0046] Step S2: the intermediate pipeline mechanism transports the concrete from the ground pump to the feed pipe of the side wall pipeline mechanism;

[0047] Step S3: for the current layer to be poured, switching and controlling the multiple inter-layer reversing valves and the multiple left and right reversing valves in the side wall pipeline mechanism, so that the concrete pumping path meets the pouring requirements of the current layer to be poured;

[0048] Step S4: performing concrete pouring operation on the pouring window of the current layer to be poured;

[0049] Step S5: When the pouring operation of the current layer to be poured is completed, repeat the above steps S3-S4 to perform the pouring operation on the next layer to be poured until the pouring operation of all layers of the pouring scene is completed.

[0050] The present invention has the following advantages:

[0051] The secondary lining trolley with press-in mold piping system proposed in the present invention uses two casting direction switching valves for the first time when casting with a press-in mold, realizing the one-pipe multi-purpose effect of the side piping system for the secondary concrete lining casting in this form; by adopting a track-type pipe-to-pipe mechanism, the pipe sharing effect of the top space of the trolley is realized, which greatly saves the internal space of the trolley, greatly simplifies the pipeline path, significantly releases the space occupied on the top of the trolley, and makes the pipeline material passing path simpler, the number of bends is greatly reduced, the probability of pipe blockage is reduced, and cleaning is smoother; for the first time, the double-sided simultaneous casting mode is used for press-in Mould casting achieves symmetrical material distribution on both sides, making casting more reasonable and the trolley force more balanced; an adjustable opposite distribution valve with controllable flow is adopted to evenly distribute the flow on the left and right sides; when the resistance on both sides is unequal, the flow can be controlled to continuously maintain a symmetrical casting mode; the simplification effect of the material distribution pipeline is further improved, the internal space of the trolley is further expanded, and the combination with the trolley structure is more friendly; it can adapt to more diverse window distribution patterns; there is no frequent pipe changing operation, and the pumping path can be switched by operating each part of the mechanism and the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 This is a schematic diagram of the existing chute type secondary lining pouring pipeline system, where Figure 1 (a) is a stereogram, Figure 1 (b) is a top view;

[0053] Figure 2 This is a schematic diagram of the existing secondary lining casting pipeline system with a press-in mold, where Figure 2 (a) is the front view, Figure 2 (b) is a top view;

[0054] Figure 3 This is a front view of a second lining trolley with a press-in mold piping system according to an embodiment of the present invention;

[0055] Figure 4 It is a structural schematic diagram of a side wall pipeline mechanism in a second lining trolley with a press-in mold pipeline system in an embodiment of the present invention;

[0056] Figure 5 The structure of the interlayer reversing valve in the second lining trolley with a press-in mold pipeline system according to an embodiment of the present invention is shown in FIG. Figure 1 ;

[0057] Figure 6 It is a schematic diagram of a front knock hole plugging device for an interlayer reversing valve in a second lining trolley with a press-in mold pipeline system according to an embodiment of the present invention;

[0058] Figure 7 It is a schematic diagram of a rear knock hole plugging device of an interlayer reversing valve in a second lining trolley with a press-in mold pipeline system according to an embodiment of the present invention;

[0059] Figure 8 It is a schematic diagram of a plugging plate of an interlayer reversing valve in a second lining trolley with a press-in mold pipeline system according to an embodiment of the present invention;

[0060] Fig. 9 It is a schematic diagram of a lining plate of an interlayer reversing valve in a second lining trolley with a press-in mold pipeline system according to an embodiment of the present invention;

[0061] Fig.10 This is a schematic diagram of the internal structure of an interlayer reversing valve in a second lining trolley with a press-in mold pipeline system according to an embodiment of the present invention;

[0062] Fig.11 It is a structural schematic diagram of left and right reversing valves in a second lining trolley with a press-in mold pipeline system according to an embodiment of the present invention;

[0063] Fig.12 It is a structural schematic diagram of the opening of the left channel of the left and right reversing valve in a second lining trolley with a press-in mold pipeline system according to an embodiment of the present invention;

[0064] Fig.13 It is a structural schematic diagram of the opening of the right channel of the left and right reversing valve in a second lining trolley with a press-in mold pipeline system according to an embodiment of the present invention;

[0065] Fig.14 This is a schematic diagram of the opposite adjustable material distribution valve in the second lining trolley with the press-in mold pipeline system;

[0066] Fig.15 This is a schematic diagram of the distribution of pipelines in the top space of a trolley in a second lining trolley with a press-in mold pipeline system according to an embodiment of the present invention;

[0067] Fig.16 It is a structural schematic diagram of a track-type pipe alignment mechanism in a second lining trolley with a press-in mold pipeline system according to an embodiment of the present invention;

[0068] Fig.17 The present invention is a flowchart of a construction method of a second lining trolley with a press-in mold piping system according to an embodiment of the present invention.

[0069] Description of reference numerals:

[0070] Second lining trolley with press-in mold piping system 1; casting window 2;

[0071] Intermediate pipeline mechanism 10; side wall pipeline mechanism 20; track type pipe matching mechanism 30;

[0072] Concrete pump pipe 201; interlayer reversing valve 202; left and right reversing valve 203;

[0073] Reversing baffle 2021; reversing handle 2022; front knocking hole plugger 2023; rear knocking hole plugger 2024; plugging plate 2025; lining plate 2026; threaded holes 2027 for connecting the plugging plate and the lining plate; lifting and deviation correction roller group 2028;

[0074] Reversing plate 2031; push-pull rod 2032; push-pull rod handle 2033; left and right pump pipes 2034; pipe clamp 2035;

[0075] Opposite adjustable material distribution valve 101; track type material distribution trolley 102;

[0076] Flow regulator 1011; left and right flow dividing side pipes 1012; longitudinal motion track 1013;

[0077] Left and right telescopic tubes 301 ; travel drive module 302 ; angle adjustment structure 303 ; longitudinal travel track 304 ; height adjustment structure 305 . DETAILED DESCRIPTION

[0078] The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention. In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0079] The embodiment of the present invention provides a second lining trolley with a press-in mold pipeline system, and the specific implementation method is as follows:

[0080] Embodiment 1:

[0081] See also Figure 3-4 As shown, an embodiment of the present invention provides a second lining trolley with a press-in mold piping system 1, comprising: an intermediate piping mechanism 10 and two side wall piping mechanisms 20 connected to the intermediate piping mechanism 10;

[0082] The side wall pipeline mechanism 20 includes a plurality of concrete pump pipes 201, a plurality of interlayer reversing valves 202, and a plurality of left and right reversing valves 203; the plurality of concrete pump pipes 201 are used to form a concrete pumping path for pouring concrete to each pouring window 2; the interlayer reversing valves 202 are respectively connected to the concrete pump pipes located on the upper layer and the concrete pump pipes located on the lower layer to control the flow direction of the concrete between layers; the left and right reversing valves 203 are respectively connected to the concrete pump pipes connected to the two pouring windows on the same layer to control the switching of the concrete flow to the left and right;

[0083] The intermediate pipeline mechanism 10 is used to transport concrete from the ground pump to the side wall pipeline mechanism 20 .

[0084] The second lining trolley with press-in mold pipeline system of this embodiment consists of two parts: the side wall pipeline mechanism and the middle pipeline mechanism, wherein the side wall pipeline mechanism includes three parts: the concrete pump pipe, the interlayer reversing valve, and the left and right reversing valves. Among them, the concrete pump pipe forms the path for concrete pumping, the interlayer reversing valve switches the flow direction of the concrete between layers, and the left and right reversing valves switch and control the left and right flow directions of the concrete, so that fully enclosed press-in mold casting can be achieved for multiple casting windows when a small number of concrete pump pipes are distributed. The concrete from the ground pump flows upward, passes through the middle pipeline mechanism, and then flows into the side wall pipeline mechanisms on both sides, which can achieve simultaneous casting on the left and right sides.

[0085] Alternatively, see Figure 5As shown, the interlayer reversing valve 202 in the second lining trolley with press-in mold piping system 1 of the embodiment of the present invention is a three-way structure, a rotatable reversing baffle 2021 is provided inside the interlayer reversing valve 202, and reversing handles 2022 connected to the reversing baffle 2021 are provided on both sides of the interlayer reversing valve 202; the reversing baffle 2021 is driven to perform reversing movement by rotating the reversing handle 2022 to realize the switching of the connecting direction in the valve, thereby changing the flow direction of the concrete in the pipe.

[0086] The interlayer reversing valve 202 in this embodiment is a three-way structure capable of switching the flow direction of concrete in the pump pipe between layers. The basic principle is: using a rotatable reversing baffle 2021 fixed inside, by rotating the reversing handles 2022 located on both sides of the dispensing valve to switch the connection direction of the three-way, thereby changing the flow path of the concrete in the pump pipe, such as Figure 5 shown.

[0087] In addition, in order to prevent the residual concrete inside from being incompletely cleaned, which would affect the rotation of the reversing baffle and cause its function to fail, the interlayer reversing valve structure of this embodiment is also equipped with two processing methods, which can handle different degrees of internal concrete accumulation blockage.

[0088] like Figure 6 and Figure 7 As shown, when the internal concrete is not cleaned thoroughly and there is concrete accumulation on the inner wall that affects the rotation of the reversing baffle 2021, first prepare a steel rod or steel pipe, and at the same time loosen the bolts of the knock hole plugger (front knock hole plugger 2023, rear knock hole plugger 2024) located on the outer wall of the interlayer reversing valve, and then move it to the side to expose the knock hole, and then insert the prepared steel rod from the knock hole into the valve body to support the reversing baffle 2021 that cannot rotate, and then use a hammer or other tools to knock the steel rod to prompt the reversing baffle to start rotating again. According to the specific situation that the reversing baffle cannot rotate, choose to open the front knock hole or the rear knock hole.

[0089] In addition, if the internal concrete accumulation is serious and it is no longer possible to operate by knocking the holes, the plugs 2025 on both sides of the valve body can be removed to completely expose the center of the valve body.

[0090] like Figure 8 and Fig. 9 As shown in the figure, the plugging plate 2025 and the lining plate 2026 on both sides of the valve body together form a detachable valve body side wall structure. When there is a lot of concrete accumulated inside the valve body and the knocking hole cannot restore the reversing baffle 2021 to normal rotation, this part needs to be operated. First, remove the reversing handle 2022, then remove the long bolts to remove the plugging plates 2025 on both sides, so that the inside of the valve body is open (exposing the lifting and deviation correction roller group 2028), and use various tools to clean the inside in detail, such as Fig.10 shown.

[0091] Alternatively, see Fig.11 As shown, in the second lining trolley with press-in mold piping system 1 of the embodiment of the present invention, a movable reversing plate 2031 is provided inside the left and right reversing valve 203, and push-pull rod handles 2033 are provided on both sides of the left and right reversing valve 203, and the push-pull rod handles 2033 are connected to the reversing plate 2031 through push-pull rods 2032; the reversing plate 2031 is moved by operating the push-pull rod handle 2033 to realize the opening or closing of the left and right channels in the valve.

[0092] The left-right reversing valve 203 in this embodiment is a flow direction conversion mechanism capable of switching the flow direction of concrete to the left and right. The main principle is: by operating the push-pull handle 2033, the reversing plate 2031 located inside the valve body is moved according to the use needs, thereby realizing the opening or closing operation of the left and right channels. Fig.11 As shown (wherein the left and right pump pipes 2034 are connected to the main pump pipe through the pipe clamp 2035), the effect of left and right material distribution is achieved, as shown in FIG. Fig.12 and Fig.13 shown.

[0093] When the reversing plate cannot move due to incomplete cleaning inside the valve body, you can use a hammer or other tools to knock on both ends of the push-pull rod to make it move again. If the internal concrete is seriously accumulated, you can remove the pipes on both sides or directly replace them with new parts and reinstall them for use.

[0094] Optionally, in the second lining trolley with press-in-mold piping system 1 of the embodiment of the present invention, a pressure sensor for detecting the concrete pressure in the pipe is further provided in the interlayer reversing valve 202 and / or the left and right reversing valve 203 .

[0095] In this embodiment, a pressure sensor can be added after the interlayer reversing valve. After detecting overpressure pipe blockage, the indicator light will light up immediately and a buzzer will sound, prompting the construction personnel to stop pouring and check. A pressure sensor can also be added after the left and right reversing valves. After detecting overpressure pipe blockage, the indicator light will light up immediately and a buzzer will sound, prompting the construction personnel to stop pouring and check. The values ​​of pressure sensors at various locations can also be transmitted to the terminal near the pump truck through wireless communication technology, and the pressure value and pipe blockage position can be displayed in real time, so that the operator can clearly know the pouring situation.

[0096] Alternatively, see Figure 4As shown, in the second lining trolley with press-in mold piping system 1 of the embodiment of the present invention, when the concrete pouring operation is carried out for the pouring scene of four floors with four pouring windows on each floor, the side wall piping mechanism 20 specifically includes: from top to bottom, 4-way concrete pump pipes and two inter-layer reversing valves on the first layer; 4-way concrete pump pipes, two left and right reversing valves and two inter-layer reversing valves on the second layer; 4-way concrete pump pipes, two left and right reversing valves and two inter-layer reversing valves on the third layer; 4-way concrete pump pipes and two left and right reversing valves on the fourth layer.

[0097] In the side wall piping mechanism of this embodiment, by using two kinds of material distribution valve mechanisms, the concrete pouring operation of the pouring scene with four floors and four pouring windows on each floor is realized. At this time, only four concrete pump pipes need to be distributed on one side of the top space of the trolley to complete the connection of the pouring windows on one side and carry out the second lining laying, which effectively reduces the number of pump pipes distributed inside the trolley and reduces the complexity of its distribution.

[0098] Alternatively, see Figure 3 As shown, the intermediate pipeline mechanism 10 in the second lining trolley with press-in mold pipeline system 1 of the embodiment of the present invention includes a opposed adjustable material distribution valve 101 and a rail-type material distribution trolley 102 fixedly connected to the opposed adjustable material distribution valve. The rail-type material distribution trolley 102 moves to drive the opposed adjustable material distribution valve 101 to move longitudinally along the trolley, and the opposed adjustable material distribution valve 101 is used to realize simultaneous material distribution and pouring to the opposite side wall pipeline mechanisms 20.

[0099] In this embodiment, the intermediate pipeline mechanism 10 includes a track-type material distribution trolley 102 and an opposite adjustable material distribution valve 101. The track-type material distribution trolley 102 can realize pipe operation at different positions, so that the opposite adjustable material distribution valve 101 is connected to the side wall pipeline mechanism 20 to form a passage. The opposite adjustable material distribution valve can realize left-right symmetrical simultaneous pouring, and can timely and evenly distribute concrete to the left and right flow directions.

[0100] Optionally, in this embodiment, when the pipe resistance in the side wall piping mechanisms 20 on both sides is different or the concrete pouring requirements on both sides are different, the concrete flow in the side wall piping mechanisms 20 on both sides is adjusted by the opposite adjustable dividing valves 101 to achieve simultaneous pouring; and, the concrete flow in the side wall piping mechanisms 20 on both sides is adjusted by the opposite adjustable dividing valves 101 to be the same or different to meet the construction requirements.

[0101] Specifically, when the pumping resistance in the side wall pipeline mechanism (i.e., the left and right side wall pump pipes) is different, resulting in different flow rates on both sides, the flow rate of concrete on both sides can be adjusted by the opposite adjustable material distribution valves to keep the two sides in synchronous and symmetrical distribution; it can also be adjusted to a state with different flow rates on both sides according to construction requirements.

[0102] Alternatively, see Fig.14As shown, the opposing adjustable dosing valve 101 in the second lining trolley with press-in mold piping system 1 of the embodiment of the present invention includes a flow regulator 1011 and left and right shunt side pipes 1012; the flow regulator 1011 is located inside the opposing adjustable dosing valve 101, and is used to adjust the flow of concrete in the side pipe, and the left and right shunt side pipes 1012 are arranged on both sides of the opposing adjustable dosing valve 101; the intermediate pipeline mechanism 10 also includes a longitudinal motion track 1013, and the opposing adjustable dosing valve 101 is arranged on the longitudinal motion track 1013. The opposing adjustable dosing valve 101 moves longitudinally along the longitudinal motion track 1013 driven by the track-type material distribution trolley 102.

[0103] In this embodiment, the opposite adjustable material distribution valve can evenly distribute the material from the concrete placing machine to the left and right side wall pipeline mechanisms, thereby achieving symmetrical and uniform concrete pouring on the left and right sides. Fig.14 As shown. The opposite adjustable material distribution valve moves left and right by operating the flow regulator 1011 to adjust the flow on the left and right sides in time, so that the flow on both sides is always consistent. If necessary, one side can be completely closed and only one side can be poured (such as when one side is completely blocked). After the blocked pipeline is unblocked, both sides can be opened for symmetrical pouring. This structure is fixedly connected to the track-type material distribution trolley and can move longitudinally with it.

[0104] Alternatively, see Figure 3 and Fig.15 As shown, the second lining trolley with press-in mold piping system 1 of the embodiment of the present invention also includes a track-type pipe-pairing mechanism 30 located on both sides of the top of the trolley, and the left and right branch side pipes 1012 are connected to the feed pipes of the side wall piping mechanism 20 through the track-type pipe-pairing mechanism 30.

[0105] Alternatively, see Fig.16 As shown, the rail-type pipe alignment mechanism 30 in the second lining trolley with press-in mold piping system 1 of the embodiment of the present invention includes a frame, left and right telescopic pipes 301, a travel drive module 302 and an angle adjustment structure 303 arranged on the frame, and a longitudinal travel track 304 located below the frame;

[0106] The two ends of the left and right telescopic tubes 301 are respectively connected to the left and right diversion side tubes 1012 and the feed pipes of the side wall pipeline mechanism 20; the angle adjustment structure 303 is connected to the left and right telescopic tubes 301, and is used to adjust the pitch angle of the left and right telescopic tubes 301; the walking drive module 302 is used to drive the left and right telescopic tubes 301 to move along the longitudinal walking track 304.

[0107] In this embodiment, the track-type pipe-matching mechanism 30 is mainly composed of left and right telescopic pipes 301, a travel drive module 302, an angle adjustment structure 303, a longitudinal travel track 304, and a height adjustment structure 305. According to the position of the track-type material distribution trolley and the opposite adjustable material distribution valve, it can automatically move along the longitudinal travel track and cooperate with the left and right telescopic pipes to avoid the left and right columns of the trolley. In addition, the height and angle can be adjusted according to the arch structure of the trolley.

[0108] In summary, the second lining trolley with a press-in mold piping system according to the embodiment of the present invention has the following advantages:

[0109] (1) For the first time, two pouring direction switching valves were used during pouring with a press-in mold, achieving a one-pipe multi-purpose effect for the side pipe system of the concrete secondary lining pouring under this form;

[0110] (2) By adopting a rail-type pipe-matching mechanism, the pipe sharing effect of the top space of the trolley is achieved, which greatly saves the internal space of the trolley, greatly simplifies the pipeline path, significantly releases the space occupied by the top of the trolley, and makes the pipeline material passing path more concise, the number of bends is greatly reduced, the probability of pipe blockage is reduced, and cleaning is smoother;

[0111] (3) For the first time, the double-sided simultaneous pouring mode was used for pouring with pressure into the mold, achieving symmetrical material distribution on both sides, making the pouring more reasonable and the force on the trolley more balanced;

[0112] (4) The use of a flow-controllable, adjustable dividing valve can evenly distribute the flow on the left and right sides; when the resistance on both sides is unequal, the flow can be controlled to maintain a symmetrical pouring mode;

[0113] (5) The simplified effect of the material distribution pipeline is further improved, the internal space of the trolley is further expanded, and the integration with the trolley structure is more friendly;

[0114] (6) It is a further optimization of the piping system with pressure-in-mold casting mode, which can adapt to more diverse window distribution modes.

[0115] (7) There is no need to frequently change pipes. The pumping path can be switched by simply operating the various mechanisms and valve bodies.

[0116] Embodiment 2:

[0117] On the other hand, see Fig.17 As shown, an embodiment of the present invention also provides a construction method for a second lining trolley with a press-in mold pipeline system, the method comprising:

[0118] Step S1: Arrange the side wall pipe mechanism on both sides according to the number of layers of the casting scene and the number of casting windows on each layer;

[0119] Step S2: the intermediate pipeline mechanism transports the concrete from the ground pump to the feed pipe of the side wall pipeline mechanism;

[0120] Step S3: for the current layer to be poured, switching and controlling the multiple inter-layer reversing valves and the multiple left and right reversing valves in the side wall pipeline mechanism, so that the concrete pumping path meets the pouring requirements of the current layer to be poured;

[0121] Step S4: performing concrete pouring operation on the pouring window of the current layer to be poured;

[0122] Step S5: When the pouring operation of the current layer to be poured is completed, repeat the above steps S3-S4 to perform the pouring operation on the next layer to be poured until the pouring operation of all layers of the pouring scene is completed.

[0123] The specific structure and pipeline layout of the side wall pipeline mechanism and the middle pipeline mechanism in this embodiment have been described in detail in the first embodiment and will not be repeated here.

[0124] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present invention. Therefore, these modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A secondary lining trolley with a press-in mold piping system, characterized in that: include: An intermediate pipeline mechanism and pipeline mechanisms on both side walls connected to the intermediate pipeline mechanism; The side wall pipeline mechanism includes a plurality of concrete pump pipes, a plurality of inter-layer reversing valves and a plurality of left and right reversing valves; the plurality of concrete pump pipes are used to form a concrete pumping path for performing concrete pouring operations on each pouring window; the inter-layer reversing valves are respectively connected to the concrete pump pipes located on the upper layer and the concrete pump pipes located on the lower layer to perform inter-layer switching control on the flow direction of the concrete, and the left and right reversing valves are respectively connected to the concrete pump pipes leading to the two pouring windows on the same layer to perform left and right flow switching control on the concrete; The intermediate pipeline mechanism is used to transport concrete from the ground pump to the side wall pipeline mechanism.

2. The second lining trolley with press-in mold pipeline system according to claim 1 is characterized in that: The interlayer reversing valve is a three-way structure, a rotatable reversing baffle is provided inside the interlayer reversing valve, and reversing handles connected to the reversing baffle are provided on both sides of the interlayer reversing valve; The reversing baffle is driven to perform reversing movement by rotating the reversing handle, so as to switch the communication direction in the valve, thereby changing the flow direction of the concrete in the pipe.

3. The second lining trolley with press-in mold pipeline system according to claim 1 is characterized in that: A movable reversing plate is provided inside the left-right reversing valve, and push-pull rod handles are provided on both sides of the left-right reversing valve, and the push-pull rod handles are connected to the reversing plate through push-pull rods; The reversing plate is moved by operating the push-pull rod handle to open or close the left and right channels in the valve.

4. The second lining trolley with press-in mold pipeline system according to claim 1 is characterized in that: The interlayer reversing valve and / or the left-right reversing valve are provided with a pressure sensor for detecting the concrete pressure in the pipe.

5. The second lining trolley with press-in mold pipeline system according to claim 1 is characterized in that: When concrete pouring operations are performed on a pouring scene with four floors and four pouring windows on each floor, the side wall piping mechanism specifically includes: from top to bottom, a 4-way concrete pump pipe and two inter-layer reversing valves on the first floor; a 4-way concrete pump pipe, two left and right reversing valves and two inter-layer reversing valves on the second floor; a 4-way concrete pump pipe, two left and right reversing valves and two inter-layer reversing valves on the third floor; and a 4-way concrete pump pipe and two left and right reversing valves on the fourth floor.

6. The secondary lining trolley with press-in mold pipeline system according to any one of claims 1 to 5, characterized in that: The intermediate pipeline mechanism includes an opposing adjustable material distribution valve and a rail-type material distribution trolley fixedly connected to the opposing adjustable material distribution valve. The movement of the rail-type material distribution trolley drives the opposing adjustable material distribution valve to move longitudinally along the trolley. The opposing adjustable material distribution valve is used to realize simultaneous material distribution and pouring to the opposite side wall pipeline mechanisms.

7. The second lining trolley with press-in mold pipeline system according to claim 6 is characterized in that: When the pipe resistances in the side wall pipe mechanisms on both sides are different or the concrete pouring requirements on both sides are different, the concrete flow in the side wall pipe mechanisms on both sides is adjusted by the opposite adjustable material distribution valves to achieve simultaneous pouring; Furthermore, the concrete flow rates in the side wall pipeline mechanisms on both sides are adjusted to be the same or different through the opposite adjustable material distribution valves to meet the construction requirements.

8. The second lining trolley with press-in mold pipeline system according to claim 7 is characterized in that: The opposite adjustable distributing valve comprises a flow regulator and left and right diversion side pipes, wherein the flow regulator is located inside the opposite adjustable distributing valve and is used to adjust the flow of concrete in the left and right pipelines, and the left and right diversion side pipes are arranged on both sides of the opposite adjustable distributing valve; The intermediate pipeline mechanism also includes a longitudinal motion track, and the opposite adjustable material distribution valve is arranged on the longitudinal motion track. The opposite adjustable material distribution valve moves longitudinally along the longitudinal motion track under the drive of the track-type material distribution trolley.

9. The second lining trolley with press-in mold pipeline system according to claim 8 is characterized in that: The system also includes a track-type pipe-pairing mechanism located on both sides of the top of the trolley, through which the left and right flow-dividing side pipes are connected to the feed pipe of the side wall pipeline mechanism.

10. The second lining trolley with press-in mold pipeline system according to claim 9, characterized in that: The track-type pipe alignment mechanism includes a frame, left and right telescopic pipes arranged on the frame, a travel drive module and an angle adjustment structure, and a longitudinal travel track located below the frame; The two ends of the left and right telescopic tubes are respectively connected to the left and right diversion side tubes and the feed pipe of the side wall pipeline mechanism; the angle adjustment structure is connected to the left and right telescopic tubes to adjust the pitch angle of the left and right telescopic tubes; the walking drive module is used to drive the left and right telescopic tubes to move along the longitudinal walking track.

11. A construction method for a secondary lining trolley with a press-in mold pipeline system, characterized in that: The method comprises: Step S1: Arrange the side wall pipe mechanism on both sides according to the number of layers of the casting scene and the number of casting windows on each layer; Step S2: the intermediate pipeline mechanism transports the concrete from the ground pump to the feed pipe of the side wall pipeline mechanism; Step S3: for the current layer to be poured, switching and controlling the multiple inter-layer reversing valves and the multiple left and right reversing valves in the side wall pipeline mechanism, so that the concrete pumping path meets the pouring requirements of the current layer to be poured; Step S4: performing concrete pouring operation on the pouring window of the current layer to be poured; Step S5: When the pouring operation of the current layer to be poured is completed, repeat the above steps S3-S4 to perform the pouring operation on the next layer to be poured until the pouring operation of all layers of the pouring scene is completed.

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