Early warning pump pipe, material distribution trolley, lining trolley and anti-overpressure early warning pouring device
By using early warning pump pipes in the secondary lining construction of tunnels and utilizing the deformation pipe structure to release pressure in a timely manner, the problem of not being able to judge the pouring status in a timely manner during tunnel construction was solved, thus improving construction quality and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-10
AI Technical Summary
During the secondary lining construction of the tunnel, the construction environment makes it impossible to accurately observe the concrete pouring status of the arch, resulting in local overpressure of the formwork trolley. The existing material placement system cannot release the pressure in time, affecting the construction progress and quality.
The system employs an early warning pump pipe with a deformation pipe structure. When the concrete is over-pressurized, the pipe wall deforms significantly or ruptures, thus releasing pressure and allowing for timely judgment and switching of the pouring port or termination of pouring.
This improved the quality and efficiency of secondary tunnel lining construction, prevented local formwork collapse, and reduced formwork replacement costs.
Smart Images
Figure CN224107883U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to engineering equipment technical field, especially a kind of early warning pump pipe, distributing car, lining trolley and prevent overpressure early warning pouring device. BACKGROUND
[0002] With the continuous advancement of China's high-speed railway, highway and other transportation infrastructure construction, tunnel engineering occupies an important proportion.Tunnel secondary lining as the key process to ensure the stability and safety of tunnel structure, its construction quality directly affects the service life and operation safety of tunnel.The traditional secondary lining construction method is mainly through pouring trolley distribution system to pour concrete, distribution system feeding pump pipe and pouring trolley formwork inlet are connected to pump feeding.When pouring to vault, trolley formwork needs to bear the normal pressure of concrete and the pumping pressure of feeding pump pipe.
[0003] The prior art has some deficiencies.Firstly, due to the limitation of tunnel construction environment, the operating personnel cannot accurately observe the pouring state of the vault concrete, and cannot timely judge whether it is necessary to switch the pouring port or terminate pouring, which is easy to cause local concrete overpressure of the trolley formwork.Secondly, the existing distribution system feeding pump pipe generally adopts steel structure hard pipe, when local overpressure occurs on the panel of trolley formwork, it cannot realize instantaneous pressure relief, which further leads to local deformation and collapse of the formwork, and it needs to spend a large cost to replace the formwork, which affects the construction progress. UTILITY MODEL CONTENT
[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an early warning pump pipe, which can judge the pouring state by whether significant deformation of the early warning pump pipe occurs, and timely switch the pouring port or terminate pouring.
[0005] An early warning pump pipe according to the first aspect of the embodiments of the utility model, comprising:
[0006] The pipe body has a feeding pump pipe interface at one end and a pouring interface at the other end;
[0007] The pipe body has a feeding pump pipe interface at one end and a pouring interface at the other end;
[0008] The pipe body is a deformation pipe, when the fluid pressure in the pipe body is greater than a preset pressure A, the pipe body deforms, when the fluid pressure in the pipe body is greater than a preset pressure B, the structural integrity of the pipe body is damaged, and the preset pressure B is greater than the preset pressure A.
[0009] The utility model discloses an early warning pump pipe has at least the following beneficial effects: the pipe body adopts the deformation pipe structure, when the local concrete of lining trolley formwork appears overpressure, the fluid pressure of the early warning pump pipe exceeds the limit pressure bearing value of early warning pump pipe material, and the pipe wall cannot resist the internal pressure and deforms obviously. By observing the deformation of the early warning pump pipe, it can be judged that the concrete has been locally overpressured, and the pouring opening can be selected to switch or pouring can be terminated. If the pouring opening cannot be switched or pouring is terminated in time, the early warning pump pipe will be directly ruptured as the early warning pump pipe deforms further, and the concrete will pour out from the ruptured pump pipe to achieve the effect of pressure relief. Thus, the problem that whether the pouring opening needs to be switched or pouring needs to be terminated cannot be determined in time during the secondary lining process of the tunnel, the local concrete of the trolley formwork is prone to overpressure, and the local formwork is prone to collapse, thereby improving the construction quality and efficiency.
[0010] According to some embodiments of the utility model, the feeding pump pipe interface is adapted to the pipe diameter of the feeding pump pipe, the feeding pump pipe interface can be sleeved on the feeding pump pipe, a first inlay ring is arranged at the feeding pump pipe interface, the first inlay ring is inlaid in the pipe body, and the first inlay ring is a constraint member.
[0011] According to some embodiments of the utility model, the first inlay ring and the feeding pump pipe form an overlap of no less than a preset length.
[0012] According to some embodiments of the utility model, a toothed surface that is intermeshed is arranged between the contact surface of the first inlay ring and the pipe body.
[0013] According to some embodiments of the utility model, the pouring interface is adapted to the pipe diameter of the pouring opening, the pouring interface can be sleeved on the pouring opening, a second inlay ring is arranged at the pouring interface, the second inlay ring is inlaid in the pipe body, and the second inlay ring is a constraint member.
[0014] According to some embodiments of the utility model, the second inlay ring and the pouring interface form an overlap of no less than a preset length.
[0015] According to some embodiments of the utility model, a toothed surface that is intermeshed is arranged between the contact surface of the second inlay ring and the pipe body.
[0016] According to some embodiments of the utility model, the cross section of the first inlay ring and / or the second inlay ring is one of Z shape or strip shape.
[0017] According to some embodiments of the utility model, an exhaust through hole is arranged on the first inlay ring and / or the second inlay ring.
[0018] According to some embodiments of the present application, the pipe body is a polyurethane pipe.
[0019] According to the second aspect of the present application, a material distribution vehicle comprises:
[0020] The early warning pump pipe described above;
[0021] The material distribution vehicle body is provided with a feeding pump pipe, and the feeding pump pipe interface is fixedly connected with the feeding pump pipe.
[0022] The material distribution vehicle according to the embodiments of the present application has at least the following beneficial effects: by directly installing the early warning pump pipe on the material distribution vehicle body, when in use, the material distribution vehicle is moved to a position where pouring is needed, and the early warning pump pipe is fixedly connected with the pouring port.
[0023] According to the third aspect of the present application, a lining trolley comprises:
[0024] The early warning pump pipe described above;
[0025] The lining trolley body is provided with a formwork, and the formwork is provided with a pouring port, and the pouring interface is fixedly connected with the pouring port.
[0026] The lining trolley according to the embodiments of the present application has at least the following beneficial effects: by directly installing the early warning pump pipe on the pouring port of the lining trolley, the feeding pump pipe of the material distribution vehicle is connected with the early warning pump pipe for feeding when pouring.
[0027] According to the fourth aspect of the present application, a pressure-overload-preventing early warning pouring device comprises:
[0028] The early warning pump pipe described above;
[0029] The material distribution vehicle body is provided with a feeding pump pipe;
[0030] The lining trolley body is provided with a formwork, and the formwork is provided with a pouring port;
[0031] The feeding pump pipe interface is fixedly connected with the feeding pump pipe, and the pouring interface is fixedly connected with the pouring port.
[0032] The anti-overpressure early warning pouring device has at least the following beneficial effects: in the tunnel secondary lining process, when the fluid pressure conveyed in the early warning pump pipe exceeds the limit pressure bearing value of the early warning pump pipe material, the pipe wall expands radially due to the inability to resist the internal pressure, and the deformation of the early warning pump pipe can be observed to determine that the concrete at the position has been locally over-pressured, and the pouring opening can be selected to be switched or pouring can be terminated.
[0033] Additional aspects and advantages of the present application will be described in the following description, become apparent from the following description, or be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0034] The present application will be further described below in conjunction with the drawings and embodiments, wherein:
[0035] Figure 1 It is a three-dimensional structure schematic view of the embodiment of the early warning pump pipe of the present application;
[0036] Figure 2 It is a cross-sectional view of the embodiment one of the early warning pump pipe of the present application;
[0037] Figure 3 It is a cross-sectional view of the embodiment two of the early warning pump pipe of the present application;
[0038] Figure 4 It is a cross-sectional view of the embodiment three of the early warning pump pipe of the present application;
[0039] Figure 5 It is a cross-sectional view of the embodiment four of the early warning pump pipe of the present application;
[0040] Figure 6 It is a structure schematic view of the embodiment of the anti-overpressure early warning pouring device of the present application;
[0041] Figure 7 It is a structure schematic view of the embodiment of the pipe body and the feeding pump pipe butt joint state of the present application.
[0042] Reference signs:
[0043] Pipe body 100; feeding pump pipe interface 101; pouring interface 102;
[0044] The first inlay ring 200;
[0045] The second inlay ring 300;
[0046] The material car body 400; the feeding pump pipe 401;
[0047] The lining trolley body 500; the pouring opening 501. DETAILED DESCRIPTION
[0048] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.
[0049] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.
[0050] In the description of the present application, the plural refers to two or more. If there is a description of first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.
[0051] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application according to the specific content of the technical scheme.
[0052] Referring to Figure 1 The warning pump pipe of the present application comprises:
[0053] The pipe body 100 has a feeding pump pipe interface 101 at one end and a pouring interface 102 at the other end;
[0054] The pipe body 100 is a deformation pipe, and the pipe body 100 deforms when the fluid pressure in the pipe is greater than a preset pressure A.
[0055] When the fluid pressure in the pipe body 100 is greater than a preset pressure B, the structural integrity of the pipe body 100 is destroyed, and the preset pressure B is greater than the preset pressure A.
[0056] In combination with Figure 6As shown, the pipe body 100 adopts a deformation pipe structure. When the local concrete of the lining trolley formwork appears overpressure, the fluid pressure in the pipe exceeds the limit pressure value of the material of the early warning pump pipe, and the pipe wall cannot resist the internal pressure and deforms significantly.
[0057] It should be noted that the general structure will deform when subjected to external force. However, in order to meet the requirement that the construction personnel can observe the deformation by naked eye and then judge the overpressure in the pipe, the deformation referred to in this paper needs to meet a relatively significant deformation. The deformation can be in various forms, such as radial deformation, axial deformation, etc., and can be in the form of pipe expansion, pipe extension, etc. As long as the workers can observe it by naked eye, it is acceptable. The subsequent embodiments will be described and illustrated by taking the example of pipe expansion.
[0058] By observing the deformation of the early warning pump pipe, it can be judged that the concrete at this position has been locally overpressured, and the pouring port can be switched or the pouring can be terminated. If the pouring port cannot be switched or the pouring cannot be terminated in time, the structure integrity of the early warning pump pipe will be damaged as the pipe further expands and deforms. The structure integrity damage can be in the form of rupture, fracture, etc. The subsequent embodiments will be described and illustrated by taking the example of pipe rupture. The concrete will pour out from the damaged pipe to achieve the effect of pressure relief.
[0059] Thus, the problem that the pouring port cannot be switched or the pouring cannot be terminated in time during the secondary lining of the tunnel, which easily leads to local overpressure of the trolley formwork concrete and causes local collapse of the formwork, is solved, thereby improving the construction quality and efficiency.
[0060] The pipe body is made of a high polymer material, specifically polyurethane. When the fluid pressure in the early warning pump pipe exceeds the limit pressure value of the pipe body material, the pipe wall will expand radially due to the inability to resist the internal pressure. Such high polymer material needs to have the characteristic of destructive expansion under the limit pressure. The specific material composition of the pipe body belongs to the prior art and will not be described here.
[0061] By testing and collecting data, the pressure value that is considered to cause overpressure of the concrete is obtained. Based on the obtained pressure value, the preset pressure A and the preset pressure B are obtained. By controlling the proportion of the material composition of the early warning pump pipe, the early warning pump pipe will expand and bulge when the fluid pressure in the early warning pump pipe reaches the early warning pressure value. By observing the bulging of the early warning pump pipe, it can be judged that the concrete at this position has been locally overpressured, and the pouring port can be switched or the pouring can be terminated.
[0062] If the pouring opening cannot be switched or the pouring is terminated in time, as the early warning pump pipe expands further, when the fluid pressure in the pipe exceeds the preset pressure A, the early warning pump pipe will directly rupture, and the concrete will pour out from the ruptured pump pipe to achieve the effect of pressure relief. Thus, the problem that the pouring opening cannot be switched or the pouring cannot be terminated in time in the secondary lining process of the tunnel, which easily leads to local concrete overpressure of the trolley formwork and local collapse of the formwork, is solved, thereby improving the construction quality and efficiency.
[0063] In combination Figure 7 As shown in the utility model, in some embodiments of the utility model, the pipe diameter of the feeding pump pipe interface 101 and the feeding pump pipe 401 is adapted, the feeding pump pipe interface 101 can be sleeved on the feeding pump pipe 401, the first inlaid ring 200 is arranged at the feeding pump pipe interface 101, the first inlaid ring 200 is inlaid in the pipe body 100, the first inlaid ring 200 is a constraint member, and the overlap between the first inlaid ring 200 and the feeding pump pipe 401 is not less than a preset length.
[0064] It should be noted that the pipe body 100 will expand after the fluid pressure in the pipe is greater than the preset value. In order to ensure that the feeding pump pipe interface 101 and the feeding pump pipe 401 can still maintain a good connection state after the pipe body 100 expands, and will not be separated due to the expansion of the pipe body 100. Therefore, by arranging the first inlaid ring 200, the rigidity of the feeding pump pipe interface 101 is ensured. The first inlaid ring 200 is a constraint member, that is, after the pipe body 100 expands, the first inlaid ring 200 will not deform significantly, but will maintain a certain rigidity itself to maintain its own invariability and ensure the connection strength. The first inlaid ring 200 can be a metal product such as stainless steel.
[0065] In addition, in order to ensure the stability of the butt joint between the first inlaid ring 200 and the feeding pump pipe 401 and avoid the pipe body 100 and the feeding pump pipe 401 from falling off, the overlap between the first inlaid ring 200 and the feeding pump pipe 401 is not less than a preset length after the feeding pump pipe interface 101 and the feeding pump pipe 401 are butt jointed, so as to ensure the constraint effect of the first inlaid ring 200 on the feeding pump pipe 401. The specific preset length can be reasonably designed according to calculation or engineering actual application, and is not specifically limited here.
[0066] Referring to Figure 2 As shown in the utility model, in some embodiments of the utility model, the contact surface between the first inlaid ring 200 and the pipe body 100 is provided with intermeshing tooth surfaces.
[0067] In the embodiment, the first inlay ring 200 and the pipe body 100 are provided with intermeshing tooth surfaces, so that the bonding strength between the first inlay ring 200 and the pipe body 100 is increased, and the possibility of separation between the first inlay ring 200 and the pipe body 100 after the pipe body 100 expands is reduced.
[0068] In some embodiments of the utility model, the pouring interface 102 and the pouring port 501 are adapted in pipe diameter, the pouring interface 102 can be sleeved on the pouring port 501, the second inlay ring 300 is arranged at the pouring interface 102, the second inlay ring 300 is inlaid in the pipe body, the second inlay ring 300 is a constraint part, and the second inlay ring 300 and the pouring interface 102 form an overlap of no less than a preset length.
[0069] Similarly, in the embodiment, the second inlay ring 300 is arranged to ensure the rigidity of the pouring interface 102. The second inlay ring 300 is a constraint part, that is, after the pipe body 100 expands, the second inlay ring 300 does not expand with the pipe body 100, but maintains a certain rigidity and does not change. In order to ensure the stability of the butt joint between the second inlay ring 300 and the pouring interface 102, the second inlay ring 300 and the pouring interface 102 form an overlap of no less than a preset length.
[0070] Further, in the embodiment, the feeding pump pipe interface 101 and the pouring interface 102 are the same in size specification, and therefore the first inlay ring 200 and the second inlay ring 300 are the same in size specification. Of course, in actual application, the size specification of the feeding pump pipe interface 101 and the pouring interface 102 can be adaptively designed according to the size of the feeding pump pipe 401 and the pouring interface 102, and therefore the size specification of the feeding pump pipe interface 101 and the pouring interface 102 is not limited herein.
[0071] Meanwhile, the size specification and the structure of the first inlay ring 200 and the second inlay ring 300 can be the same or different.
[0072] Referring to Figure 2 In some embodiments of the utility model, intermeshing tooth surfaces are arranged between the contact surface of the second inlay ring 300 and the pipe body 100.
[0073] Similarly, in the embodiment, intermeshing tooth surfaces are arranged between the contact surface of the second inlay ring 300 and the pipe body 100, so that the bonding strength between the second inlay ring 300 and the pipe body 100 is increased, and the possibility of separation between the second inlay ring 300 and the pipe body 100 after the pipe body 100 expands is reduced.
[0074] Referring to Figures 2 to 5As shown in some embodiments of the utility model, the cross section of the first inlay ring 200 and / or the second inlay ring 300 is one of Z shape or strip shape.
[0075] As shown in some embodiments of the utility model, the cross section of the first inlay ring 200 and / or the second inlay ring 300 is one of Z shape or strip shape. Figure 2 As shown in some embodiments of the utility model, the cross section of the first inlay ring 200 and / or the second inlay ring 300 is one of Z shape or strip shape.
[0076] In particular, the cross section of the first inlay ring 200 and the second inlay ring 300 is Z shape, which has the advantage that when the early warning pump pipe is made, die casting is generally used. The Z-shaped first inlay ring 200 and the second inlay ring 300 placed in the mold for making the early warning pump pipe are completely constrained, and the position of the first inlay ring 200 and the second inlay ring 300 will not move. In comparison, the position of the strip-shaped first inlay ring 200 and the second inlay ring 300 is not completely constrained, and there may be a position shift, which will reduce the yield rate, but the production cost is relatively low.
[0077] In addition, in order to ensure better installation of the feeding pump pipe interface 101 and the feeding pump pipe 401 and the pouring interface 102 and the pouring port 501, the feeding pump pipe interface 101 and the pouring interface 102 are both designed to be expanded, that is, the caliber of the feeding pump pipe interface 101 and the pouring interface 102 is larger than the pipe diameter of the pipe body 100. In order to ensure the constraint effect of the first inlay ring 200 and the second inlay ring 300, the first inlay ring 200 and the second inlay ring 300 will be adaptively adjusted according to the structure of the feeding pump pipe interface 101 and the pouring interface 102, which is specifically a Z-shaped structure. If the expanded structure design is not performed, the cross section of the first inlay ring 200 and the second inlay ring 300 is a strip shape.
[0078] In some embodiments of the utility model, the first inlay ring 200 and / or the second inlay ring 300 is provided with an exhaust through hole (not shown in the figure).
[0079] In this embodiment, by providing the exhaust through hole on the first inlay ring 200 and / or the second inlay ring 300, when the early warning pump pipe is die cast, the position between the pipe body 100 and the first inlay ring 200 and the second inlay ring 300 can be filled with material through the exhaust through hole, so that they are connected to form a whole, thereby improving the pressure bearing capacity of the pump pipe.
[0080] The utility model discloses a cloth car, including:
[0081] The early warning pump pipe described above;
[0082] The material car body 400 is provided with a feeding pump pipe 401, and the feeding pump pipe interface 101 is fixedly connected with the feeding pump pipe 401.
[0083] In the embodiment, the early warning pump pipe is directly installed on the feeding pump pipe 401 of the material car body 400.
[0084] The utility model discloses a lining trolley, which comprises:
[0085] The early warning pump pipe;
[0086] The lining trolley body 500 is provided with a formwork, and the formwork is provided with a pouring opening 501, and the pouring interface 102 is fixedly connected with the pouring opening 501.
[0087] In the embodiment, the early warning pump pipe is directly installed on the pouring opening 501 of the lining trolley body 500, and the feeding pump pipe 401 of the material car can be connected with the early warning pump pipe for feeding when pouring.
[0088] Reference Figure 6 The utility model discloses a kind of anti-overpressure early warning pouring devices, comprising:
[0089] The early warning pump pipe;
[0090] The material car body 400 is provided with a feeding pump pipe 401;
[0091] The lining trolley body 500 is provided with a formwork, and the formwork is provided with a pouring opening 501;
[0092] The feeding pump pipe interface 101 is fixedly connected with the feeding pump pipe 401, and the pouring interface 102 is fixedly connected with the pouring opening 501.
[0093] In the process of tunnel secondary lining, when the early warning pump pipe adopts deformation pipe structure, when local concrete of lining trolley formwork appears overpressure, the fluid pressure conveyed in the early warning pump pipe exceeds the limit pressure value of early warning pump pipe material, and the pipe wall is deformed due to unable to resist internal pressure. By observing the deformation of the early warning pump pipe, it can be judged that the concrete at this place has been locally overpressured, and the pouring opening 501 can be selected to be switched or pouring can be terminated.
[0094] If the pouring opening 501 cannot be switched in time or the pouring is terminated, as the early warning pump pipe is further deformed, the early warning pump pipe will directly break, and the concrete will pour out from the broken pump pipe to achieve the effect of pressure relief. Thus, the problem that whether the pouring opening needs to be switched or the pouring needs to be terminated cannot be determined in time in the current tunnel secondary lining process, which easily leads to local concrete overpressure of the trolley formwork, causes local collapse of the formwork, and thus improves the construction quality and efficiency.
[0095] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model.
Claims
1. A pre-alarm pump tube, characterized by, The application relates to a pre-warning pump pipe. The pipe body is a deformation pipe, and the pipe body deforms when the fluid pressure in the pipe body is greater than a preset pressure A. The structure integrity of the pipe body is destroyed when the fluid pressure in the pipe body is greater than a preset pressure B, and the preset pressure B is greater than the preset pressure A. The feeding pump pipe interface is adapted to the pipe diameter of the feeding pump pipe, the feeding pump pipe interface can be sleeved on the feeding pump pipe, a first inlay ring is arranged at the feeding pump pipe interface, the first inlay ring is inlaid in the pipe body, and the first inlay ring is a constraint member.
2. The pre-alarm pump tube of claim 1, wherein: An overlap of no less than a preset length is formed between the first inlay ring and the feeding pump pipe.
3. The pre-alarm pump tube of claim 2, wherein: Interlocking toothed surfaces are arranged between the contact surface of the first inlay ring and the pipe body.
4. The pre-alarm pump tube of claim 3, wherein: The pouring interface is adapted to the pipe diameter of the pouring port, the pouring interface can be sleeved on the pouring port, a second inlay ring is arranged at the pouring interface, the second inlay ring is inlaid in the pipe body, and the second inlay ring is a constraint member.
5. The pre-alarm pump tube of claim 1, wherein: The pouring interface is adapted to the pipe diameter of the pouring port, the pouring interface can be sleeved on the pouring port, a second inlay ring is arranged at the pouring interface, the second inlay ring is inlaid in the pipe body, and the second inlay ring is a constraint member.
6. The pre-alarm pump tube according to any one of claims 2 to 4, characterized in that: An overlap of no less than a preset length is formed between the second inlay ring and the pouring interface.
7. The pre-alarm pump tube of claim 6, wherein: Interlocking toothed surfaces are arranged between the contact surface of the second inlay ring and the pipe body.
8. The pre-alarm pump tube of claim 7, wherein: The cross section of the first inlay ring and / or the second inlay ring is one of Z-shaped and strip-shaped.
9. The pre-alarm pump tube of claim 7, wherein: Vent holes are arranged on the first inlay ring and / or the second inlay ring.
10. The pre-alarm pump tube of claim 7, wherein: The application relates to a pre-warning pump pipe.
11. A spreader bar, characterized by, A feeding pump pipe is arranged on the material distribution vehicle body, and the feeding pump pipe interface is fixedly connected with the feeding pump pipe. The application relates to a pre-warning pump pipe. A formwork is arranged on the lining trolley body, a pouring port is arranged on the formwork, and the pouring interface is fixedly connected with the pouring port.
12. A lining trolley characterised in that, The application relates to a pre-warning pump pipe. A feeding pump pipe is arranged on the material distribution vehicle body. A formwork is arranged on the lining trolley body, and a pouring port is arranged on the formwork.
13. An overpressure early warning pouring device, characterized in that, The feeding pump pipe interface is fixedly connected with the feeding pump pipe, and the pouring interface is fixedly connected with the pouring port.