A concrete unloading device for a tunneling machine
By using a combination of hoppers, conveying pipes, and storage mechanisms in the construction of mined tunnels, the problem of splashing caused by excessive concrete flow velocity was solved, achieving safe and efficient concrete transportation and reducing the risk of mechanical and personnel injuries.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY NO 2 ENG GROUP CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-06-19
AI Technical Summary
In the construction of mined tunnels, when there is a large elevation difference between the concrete truck and the construction site, the concrete flows out of the pipeline at too high a speed, which can easily cause splashing and result in injuries to machinery and personnel.
Design a concrete unloading device including a hopper, a conveying pipe, and a storage mechanism. The conveying pipe is equipped with a bend to slow down the concrete, and the storage mechanism is equipped with a pumping mechanism for conveying the concrete. The combined structure of the bend and the storage chamber reduces the kinetic energy of the concrete and avoids splashing.
It effectively avoids concrete splashing, reduces the risk of mechanical and personnel injury, reduces concrete waste, and improves construction safety and economic efficiency.
Smart Images
Figure CN224374492U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of concrete conveying in underground tunnels, and particularly to a concrete unloading device for underground tunnels. Background Technology
[0002] In the construction of urban subways, cut-and-cover tunnels are a commonly used construction method. The advantage of cut-and-cover tunnels is that they have a relatively small impact on the surrounding foundation, which can effectively reduce the disturbance to adjacent buildings, roads and underground facilities, thereby reducing risks such as ground subsidence, building tilting, road cracking and underground facility displacement.
[0003] During the construction of mined tunnels, a large amount of concrete mortar is used, and its transportation is usually carried out by concrete trucks. However, in some cases, there is a certain elevation difference between the location of the mined tunnel and the area that the concrete trucks can reach. To solve this problem, the concrete trucks need to transport the concrete from a high place to the location of the mined tunnel through pipelines, and then transport the concrete to the specific construction location. A concrete pool is set up below the vertically installed pipelines to collect the concrete.
[0004] However, when the elevation difference is large, the concrete discharged through the pipe is prone to splashing due to gravity, resulting in concrete waste. Concrete with an excessively fast flow rate can easily cause injuries to machinery and personnel. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of existing technologies in the construction of underground tunnels, where when there is a large elevation difference between the location of the underground tunnel and the area that the concrete truck can reach, the concrete discharged through the pipeline flows too fast, which is easy to splash and cause mechanical and personnel injuries. This invention provides a concrete unloading device for underground tunnels.
[0006] This utility model provides a concrete unloading device for a mined tunnel, comprising:
[0007] The material collection hopper, the material conveying pipe, and the material storage mechanism are provided. The material storage mechanism is provided with a material storage cavity. One end of the material conveying pipe is connected to the material collection hopper and the other end is connected to the material storage cavity. The material conveying pipe is provided with at least one fixing member and at least one bend. The material collection hopper is located above the material storage mechanism.
[0008] The storage mechanism is equipped with a pumping mechanism that communicates with the storage chamber. The pumping mechanism is used to pump concrete into a concrete truck or a concrete delivery pipeline.
[0009] Preferably, the bending portion includes a first bending portion and a second bending portion, wherein the first bending portion and the second bending portion are spaced apart.
[0010] Preferably, the conveying pipe includes a first pipe section, a second pipe section, and a third pipe section. The second pipe section is arranged vertically, and the first pipe section and the second pipe section are respectively arranged at an inclination. One end of the second pipe section is connected to the first pipe section to form the first bend, and the other end is connected to the third pipe section to form the second bend. The first pipe section is connected to the collecting hopper, and the third pipe section is connected to the storage mechanism.
[0011] Preferably, the first pipe segment and the second pipe segment have an angle A; the second pipe segment and the third pipe segment have an angle B, where angle A = angle B.
[0012] Preferably, the storage mechanism includes a housing, the housing is provided with an inlet pipe and a outlet pipe, the inlet pipe and the outlet pipe are respectively located on opposite sides of the housing, the inlet pipe and the outlet pipe are respectively connected to the storage cavity, the conveying pipe is connected to the inlet pipe, and the pumping mechanism is connected to the outlet pipe.
[0013] Preferably, the feed pipe and the discharge pipe are arranged opposite to each other; the storage cavity is provided with a plurality of baffles, and adjacent baffles are staggered along the flow direction of concrete in the storage cavity; adjacent baffles are spaced apart; the baffles are connected to the bottom plate of the box body, and the baffles are spaced apart from the side wall of the storage cavity.
[0014] Preferably, the box body has an opening that communicates with the storage cavity, and the opening is covered with a cover plate that is detachably connected to the box body.
[0015] Preferably, the fixing member includes an annular clamp, which is clamped and connected to the conveying pipe, and is used to connect to the side wall.
[0016] Preferably, the annular clamp is provided with a connector for connecting to the side wall bolts.
[0017] Preferably, the hopper is a funnel-shaped structure, and the conveying pipe is connected to the lowest point of the hopper.
[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0019] This utility model provides a concrete unloading device for underground tunnels. Concrete from a concrete truck is poured into a collection hopper, which prevents concrete leakage. The concrete in the collection hopper is transported through a conveying pipe to the storage chamber of a storage mechanism. The concrete is then pumped to a concrete truck or a concrete delivery pipeline. A bend is provided on the conveying pipe, which reduces the kinetic energy of the concrete as it passes through the bend by impacting the inner wall of the pipe, thus slowing it down. The concrete enters the storage chamber of the storage mechanism, preventing concrete splashing. This device avoids mechanical and personnel injuries and concrete waste, and has good economic and practical value. Attached Figure Description
[0020] Figure 1 This is a structural schematic diagram of a concrete unloading device for a mined tunnel according to the present invention.
[0021] Figure 2 This is a schematic diagram of the conveying pipe of a concrete unloading device for a mined tunnel according to the present invention;
[0022] Figure 3 This is a top sectional view of the storage mechanism of a concrete unloading device for a mined tunnel according to the present invention.
[0023] Figure 4 This is a front sectional view of the storage mechanism of a concrete unloading device for a mined tunnel according to the present invention.
[0024] Figure 5 This is a schematic diagram of the structure of a fixing component for a concrete unloading device in a mined tunnel according to the present invention.
[0025] Figure 6 This is a schematic diagram of the structure of the collection hopper of a concrete unloading device for a mined tunnel according to the present invention.
[0026] Marked in the image:
[0027] 1-Conveying pipe, 11-First pipe section, 12-Second pipe section, 13-Third pipe section, 14-Collection hopper, 2-Bend, 21-First bend, 22-Second bend, 3-Storage mechanism, 31-Storage chamber, 32-Infeed pipe, 33-Discharge pipe, 34-Baffle, 35-Cover plate, 36-Opening, 4-Pumping mechanism, 5-Fixing component, 51-Connecting component
[0028] 100-Side wall. Detailed Implementation
[0029] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.
[0030] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.
[0031] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.
[0032] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.
[0033] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.
[0034] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.
[0035] Example 1
[0036] like Figures 1-6 As shown, a concrete unloading device for a mined tunnel is specifically composed of a hopper 14, a conveying pipe 1, and a storage mechanism 3. The storage mechanism 3 is provided with a storage chamber 31. One end of the conveying pipe 1 is connected to the hopper 14, and the other end is connected to the storage chamber 31. The conveying pipe 1 is provided with at least one fixing member 5 and at least one bending part 2. The hopper 14 is located above the storage mechanism 3. The storage mechanism 3 is provided with a pumping mechanism 4 connected to the storage chamber 31. The pumping mechanism 4 is used to pump concrete into a concrete truck or concrete conveying pipeline.
[0037] Concrete from the concrete truck is poured into the collection hopper 14, which prevents concrete leakage. The concrete in the collection hopper 14 is transported through the conveying pipe 1 to the storage chamber 31 of the storage mechanism 3. The concrete is then pumped to the concrete truck or concrete delivery pipeline by the pumping mechanism 4. A bend 2 is provided on the conveying pipe 1. When the concrete passes through the bend 2, it reduces its kinetic energy by impacting the inner wall of the conveying pipe 1, thereby slowing down the concrete. The concrete enters the storage chamber 31 of the storage mechanism 3, thus preventing concrete splashing. This avoids mechanical and personnel injuries and prevents concrete waste.
[0038] In one or more embodiments, the bending portion 2 includes a first bending portion 21 and a second bending portion 22, with the first bending portion 21 and the second bending portion 22 spaced apart. By providing the first bending portion 21 and the second bending portion 22 on the pipeline, the concrete is decelerated at the first bending portion 21 and the second bending portion 22.
[0039] In an optional embodiment, the conveying pipe 1 includes a first pipe section 11, a second pipe section 12, and a third pipe section 13. The second pipe section 12 is arranged vertically, while the first pipe section 11 and the second pipe section 12 are respectively arranged at an inclination. One end of the second pipe section 12 is connected to the first pipe section 11 to form a first bend 21, and the other end is connected to the third pipe section 13 to form a second bend 22. The first pipe section 11 is connected to the collecting hopper 14, and the third pipe section 13 is connected to the storage mechanism 3. Specifically, the end of the first pipe section 11 away from the second pipe section 12 is offset toward the unloading position of the concrete truck, so that the collecting hopper 14 is located directly below the unloading position of the concrete truck, thereby enabling the concrete truck to inject concrete into the collecting hopper 14.
[0040] In an optional embodiment, the first pipe segment 11 and the second pipe segment 12 have an included angle A; the second pipe segment 12 and the third pipe segment 13 have an included angle B, where included angle A = included angle B = 135°; this allows the concrete to flow quickly into the storage chamber 31 while also slowing down the concrete; the first bend 21 and the second bend 22 are thickened to reduce the probability of leakage at the first bend 21 and the second bend 22.
[0041] In one or more embodiments, the storage mechanism 3 includes a box body, the box body is provided with a feed pipe 32 and a discharge pipe 33, the feed pipe 32 and the discharge pipe 33 are respectively located on opposite sides of the box body, the feed pipe 32 and the discharge pipe 33 are respectively connected to the storage cavity 31, the conveying pipe 1 is connected to the feed pipe 32, and the pumping mechanism 4 is connected to the discharge pipe 33; the box body is a cuboid box body, and a cuboid storage cavity 31 is provided inside the box body, the concrete is further decelerated in the storage cavity 31, and the concrete can be temporarily stored in the storage cavity 31.
[0042] In an optional embodiment, the feed pipe 32 and the discharge pipe 33 are arranged opposite to each other; the storage chamber 31 is provided with a plurality of baffles 34, and adjacent baffles 34 are staggered along the flow direction of concrete in the storage chamber 31; adjacent baffles 34 are spaced apart; the baffles 34 are connected to the bottom plate of the box body, and the baffles 34 are spaced apart from the side wall of the storage chamber 31; after entering the storage chamber 31, the concrete is decelerated by impacting the baffles 34.
[0043] In an optional embodiment, the box body is provided with an opening 36, which communicates with the storage chamber 31. The opening 36 is covered with a cover plate 35, which is detachably connected to the box body. During use, the opening 36 is closed by the cover plate 35 to seal the storage chamber 31, thereby preventing concrete from splashing out from the opening 36. During maintenance, the operator can open the cover plate 35 to maintain the storage chamber 31.
[0044] In one or more embodiments, the fixing member 5 includes an annular clamp, which is clamped and connected to the conveying pipe 1. The annular clamp is used to connect to the side wall 100 and constrain the conveying pipe 1. By connecting the annular clamp to the side wall 100, the pipe is fixed to the side wall 100, preventing the pipe from tipping over when concrete is conveyed in the conveying pipe 1. Specifically, two annular clamps are provided on the conveying pipe 1, and the two annular clamps are spaced apart. In an optional embodiment, both annular clamps are fixed to the second pipe section 12.
[0045] In an optional embodiment, the annular clamp is provided with a connector 51, which is used to bolt to the side wall 100. The connector 51 is a plate, thereby increasing the contact area with the side wall 100 and improving the fixation firmness. In an optional embodiment, connectors 51 are respectively provided on both sides of the conveying pipe 1, thereby improving the connection firmness between the conveying pipe 1 and the side wall 100.
[0046] In one or more embodiments, the collecting hopper 14 is a funnel-shaped structure, and the conveying pipe 1 is connected to the lowest point of the collecting hopper 14; specifically, the collecting hopper 14 is a funnel-shaped structure with a circular opening, the diameter of which is 2m.
[0047] Specifically, the pumping mechanism 4 is a mud pump; the first pipe section 11, the second pipe section 12 and the third pipe section 13 are integrally formed structural components, and the hopper 14 is welded to the end of the first pipe section 11.
[0048] Specifically, a flange is provided at the end of the third pipe section 13, which is connected to the feed pipe 32.
[0049] This utility model discloses a concrete unloading device for a mined tunnel. In use, a concrete truck pours concrete into the aggregate hopper 14. Under the action of gravity, the concrete moves into the storage chamber 31 of the storage mechanism 3, and is then transported to the construction site of the mined tunnel through the pumping mechanism 4.
[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A concrete unloading device for a mined tunnel, characterized in that, include: The material collection hopper (14), the material conveying pipe (1), and the material storage mechanism (3) are provided. The material storage mechanism (3) is provided with a material storage cavity (31). One end of the material conveying pipe (1) is connected to the material collection hopper (14) and the other end is connected to the material storage cavity (31). The material conveying pipe (1) is provided with at least one fixing member (5) and at least one bending part (2). The material collection hopper (14) is located above the material storage mechanism (3). The storage mechanism (3) is provided with a pumping mechanism (4) connected to the storage chamber (31), and the pumping mechanism (4) is used to pump concrete into a concrete truck or concrete delivery pipeline.
2. The concrete unloading device for a mined tunnel according to claim 1, characterized in that, The bending portion (2) includes a first bending portion (21) and a second bending portion (22), with the first bending portion (21) and the second bending portion (22) spaced apart.
3. A concrete unloading device for a mined tunnel according to claim 2, characterized in that, The conveying pipe (1) includes a first pipe section (11), a second pipe section (12) and a third pipe section (13). The second pipe section (12) is arranged vertically, and the first pipe section (11) and the second pipe section (12) are respectively arranged at an inclination. One end of the second pipe section (12) is connected to the first pipe section (11) to form the first bend (21), and the other end is connected to the third pipe section (13) to form the second bend (22). The first pipe section (11) is connected to the collecting hopper (14), and the third pipe section (13) is connected to the storage mechanism (3).
4. A concrete unloading device for a mined tunnel according to claim 3, characterized in that, The first pipe segment (11) and the second pipe segment (12) have an angle A; the second pipe segment (12) and the third pipe segment (13) have an angle B, where angle A = angle B.
5. A concrete unloading device for a mined tunnel according to claim 1, characterized in that, The storage mechanism (3) includes a box body, which is provided with a feed pipe (32) and a discharge pipe (33). The feed pipe (32) and the discharge pipe (33) are located on opposite sides of the box body. The feed pipe (32) and the discharge pipe (33) are respectively connected to the storage chamber (31). The conveying pipe (1) is connected to the feed pipe (32). The pumping mechanism (4) is connected to the discharge pipe (33).
6. A concrete unloading device for a mined tunnel according to claim 5, characterized in that, The feed pipe (32) is arranged opposite to the discharge pipe (33); the storage cavity (31) is provided with a plurality of baffles (34), and adjacent baffles (34) are staggered along the flow direction of concrete in the storage cavity (31); adjacent baffles (34) are spaced apart; the baffles (34) are connected to the bottom plate of the box body, and the baffles (34) are spaced apart from the side wall of the storage cavity.
7. A concrete unloading device for a mined tunnel according to claim 5, characterized in that, The box body has an opening (36) that communicates with the storage chamber (31). The opening (36) is covered with a cover plate (35) that is detachably connected to the box body.
8. A concrete unloading device for a mined tunnel according to claim 1, characterized in that, The fixing member (5) includes an annular clamp, which is clamped and connected to the conveying pipe (1) and is used to connect to the side wall (100).
9. A concrete unloading device for a mined tunnel according to claim 8, characterized in that, The annular clamp is provided with a connector (51), which is used to be bolted to the side wall (100).
10. A concrete unloading device for a mined tunnel according to any one of claims 1-9, characterized in that, The collecting hopper (14) is a funnel-shaped structure, and the conveying pipe (1) is connected to the lowest point of the collecting hopper (14).