Concrete conveying device for track bed of prefabricated track slab
By combining the design of inclined guide pipes and vertical discharge pipes with hoppers and inspection windows, the problems of poor concrete transportation and unstable performance when the underground station is deep are solved, and stable and efficient concrete delivery is achieved.
Patent Information
- Application Number
- CN202423172941.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-20
AI Technical Summary
In track-laying projects with deep underground stations, the vertical material discharge pipes are quite long, making concrete transportation less smooth, prone to blockage, and with unstable performance.
The concrete conveying device, consisting of an inclined guide pipe and a vertical discharge pipe, combined with a hopper, auxiliary rope and inspection window, ensures that the concrete is transported along the inclined slope to avoid segregation, and provides buffering and clearing at turning points.
It achieves stable concrete delivery, avoids pipe blockage and segregation, adapts to underground construction environments of different depths and directions, and improves construction efficiency.
Smart Images
Figure CN223548361U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of track construction technology, specifically to a concrete conveying device for precast track slabs. Background Technology
[0002] Currently, in the track-laying profession of urban rail transit engineering, concrete construction affects the quality of the track bed in each construction section. Furthermore, the efficiency and quality of the concrete construction process are directly related to whether the concrete can be efficiently and conveniently transported from the ground to the work surface.
[0003] In related technologies, during the track laying project of the track slab on the lower floors, the track laying construction unit usually installs a vertical material discharge pipe at the shield tunnel opening, and puts the concrete into the mixing tank in the underground track area through the material discharge pipe. The track car head then transports the concrete in the mixing tank to the underground construction area.
[0004] Regarding the aforementioned technologies, in some underground station track-laying projects with multiple levels and great depths, the required length of the vertical material discharge pipe is relatively long, the vertical transportation distance is relatively high, and the concrete is prone to pipe blockage, affecting the concrete transportation efficiency. Furthermore, the concrete is prone to segregation during the descent process, affecting the concrete performance. Therefore, there are problems such as insufficient smooth concrete transportation and unstable concrete performance. Utility Model Content
[0005] The purpose of this utility model is to provide a concrete conveying device for precast track slabs to solve the problems of insufficient concrete transportation and unstable concrete performance.
[0006] To achieve the above objectives, this utility model provides a precast track slab concrete conveying device, which adopts the following technical solution:
[0007] A precast track slab concrete conveying device includes a guide pipe and a discharge pipe; the guide pipe includes at least two pipes, each of which is inclined and connected in sequence; the discharge pipe is vertically arranged, and the top end of the discharge pipe is connected to the bottom end of the lowest guide pipe; both the top end of the guide pipe and the top end of the discharge pipe are provided with a hopper, and the hopper is fixedly connected to the floor slab.
[0008] As an optimization of the precast track slab concrete conveying device, the end of the guide pipe away from the hopper is provided with a connection port, and the end face of the connection port is parallel to the end face of the hopper adjacent to the guide pipe.
[0009] As an optimization of the precast track slab concrete conveying device, auxiliary ropes are fixedly connected at each of the three equal division points of the guide pipe sidewall, and the end of the auxiliary rope away from the guide pipe is used to be fixedly connected to the floor slab.
[0010] As an optimization of the precast track slab concrete conveying device, the auxiliary rope is fixedly connected to two sub-ropes at one end near the guide pipe, and the two sub-ropes are respectively fixedly connected to two different points on the periphery of the guide pipe.
[0011] As an optimization of the concrete conveying device for precast track slabs, the guide pipe has at least two inspection windows spaced apart on the upward-facing side, and the inspection windows are slidably connected to a cover plate.
[0012] As an optimization of the precast track slab concrete conveying device, the inspection window is 500mm long and 200mm wide.
[0013] As an optimization of the precast track slab concrete conveying device, the spacing between the multiple inspection windows is 150mm-200mm.
[0014] As an optimization of a precast track slab concrete conveying device, the inclination angle of the guide pipe ranges from 30° to 75°.
[0015] Compared with existing technologies, the advantages of this utility model are as follows: Concrete is transported along an inclined slope to the discharge pipe via a guide pipe, preventing segregation and ensuring concrete quality; the hopper connects the guide pipe and the discharge pipe, buffering the turning points in the transport path and ensuring effective concrete transport; the inspection window allows for dredging of the guide pipe, reducing the risk of blockage and facilitating timely drainage; furthermore, the concrete transport path formed by the guide pipe can adapt to underground construction environments of different directions and depths, enabling stable transport of concrete with significant elevation differences. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the overall structure of the conveying device according to an embodiment of this application;
[0018] Figure 2 This is a schematic diagram of the installation layout of the right and left lines of the conveying device in an embodiment of this application.
[0019] In the diagram: 1. Guide pipe; 11. Connection port; 2. Discharge pipe; 3. Hopper; 4. Auxiliary rope; 41. Sub-rope; 5. Inspection window; 51. Cover plate. Detailed Implementation
[0020] To make the technical solution and advantages of this utility model clearer, the present utility model and its beneficial effects will be described in further detail below with reference to specific embodiments and accompanying drawings. However, the embodiments of this utility model are not limited thereto.
[0021] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0022] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.
[0023] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail below.
[0024] This application provides a concrete conveying device for precast track slabs, employing the following technical solution:
[0025] Reference Figure 1A precast track slab concrete conveying device includes a guide pipe 1 and a discharge pipe 2. Specifically, in this embodiment, both the guide pipe 1 and the discharge pipe 2 are made of seamless steel pipe with a wall thickness of 10mm and an inner diameter D = 325mm. The guide pipe 1 is configured according to the height of the underground floors, and there are at least two guide pipes 1. The guide pipes 1 are all inclined and connected in sequence to form an "S"-shaped conveying path. The top of the uppermost guide pipe 1 is connected to the ground, and the remaining guide pipes 1 extend to the underground floors. The discharge pipe 2 is vertically embedded in the lowest floor. The top of the discharge pipe 2 is connected to the bottom of the lowermost guide pipe 1. The bottom of the discharge pipe 2 faces the centerline of the mixing tank in the track area, and the bottom of the discharge pipe 2 is at least 4000mm away from the rail surface to ensure smooth passage of the receiving tank car and the front of the track car. A hopper 3 is fixedly installed at both the top of the guide pipe 1 and the top of the discharge pipe. The hopper 3 is welded and fixed to the side of the floor slab using U-shaped channel steel. The upper part of the hopper 3 is generally square, and the length and width of the upper part of the hopper 3 are not less than twice the inner diameter of the guide pipe 1. In this embodiment, the upper part of the hopper 3 is a square open shape with upper dimensions of 800mm × 800mm and a height of 300mm. The lower part of the hopper 3 is a regular frustum with a top dimension of 800mm × 800mm, a bottom dimension of 340mm × 340mm, and a height of 400mm. The hopper 3 has a capacity of 0.3m³. 3 The material is 8mm thick steel plate. Through the connection of guide pipe 1 and discharge pipe 2, concrete is transported from the ground to the mixing tank in the underground floor along the conveying path. This can achieve effective concrete conveying, avoid vertical conveying, prevent segregation, and ensure that the concrete performance is not damaged. It is also suitable for various underground working environments, thereby improving the smoothness of concrete conveying and ensuring the performance of concrete.
[0026] In the preferred embodiment of this application, reference is made to Figure 1 The top of the guide pipe 1 is a hopper 3, which is typically positioned perpendicular to the ground. The end face of the hopper 3 is parallel to the horizontal plane. The bottom of the guide pipe 1 is cut to form a connection port 11, the end face of which is parallel to the end face of the hopper 3 of the adjacent guide pipe 1. One guide pipe 1 connection port 11 connects to the hopper 3 of another adjacent guide pipe 1, achieving connection at the corner of the conveying path. The connection method between the guide pipe 1 and the hopper 3 at the top of the discharge pipe 2 is the same as the connection method between guide pipes 1, and will not be described again here. Through the connection between the guide port and the hopper 3, the concrete is buffered at the connection point of the conveying path, avoiding pipe blockage and thus improving the efficiency of concrete conveying.
[0027] In the preferred embodiment of this application, reference is made to Figure 1Auxiliary ropes 4 are fixedly connected to three equal points on the upper side wall of the guide tube 1. Two auxiliary ropes 4 are connected to the side of each guide tube 1. The ends of the two auxiliary ropes 4 away from the guide tube 1 are connected to the lifting ring of the floor slab. In this embodiment, the two auxiliary ropes 4 are fixedly connected to the same lifting ring. The guide tube 1 is suspended and fixed to the floor slab by the two auxiliary ropes 4, which reduces the interference of the guide tube 1's own weight on the connection of the guide tube 1, avoids the squeezing between multiple guide tubes 1, and helps to improve the smoothness of the connection of the conveying path.
[0028] Furthermore, referring to Figure 1 The auxiliary rope 4 branches off at one end near the guide tube 1, connecting to two sub-ropes 41. These two sub-ropes 41 extend towards the periphery of the guide tube 1 and are connected to two different points on the periphery of the guide tube 1. In this embodiment, the two different points are symmetrically positioned on either side of the trisection points of the guide tube 1. The connection between the two sub-ropes 41 makes the connection between the auxiliary rope 4 and the guide tube 1 more stable, reducing the shaking of the guide tube 1 and thus improving the stability of the guide tube 1 installation.
[0029] In the preferred embodiment of this application, reference is made to Figure 1 At least two inspection windows 5 are spaced apart on the upward-facing side of the guide pipe 1. A cover plate 51 is slidably connected to the inspection window 5. The cover plate 51 is usually a transparent acrylic plate. The concrete conveying situation in the guide pipe 1 can be observed through the cover plate 51. When a local blockage of the concrete occurs, the inspection window 5 can be opened by sliding the cover plate 51 to clear the inside of the guide pipe 1, thereby ensuring the smooth flow of concrete.
[0030] Furthermore, the length of the inspection window 5 is along the length of the guide pipe 1, with a length of 500mm and a width of 200mm, to facilitate the use of inspection tools to unclog the guide pipe 1.
[0031] Furthermore, the spacing between the multiple inspection windows 5 is 150mm-200mm. In this embodiment, there are 3 inspection windows 5, which are equidistantly distributed with a spacing of 200mm. By limiting the spacing of the inspection windows 5, the guide pipe 1 is evenly segmented, increasing the effective inspection area of the guide pipe 1 and facilitating the unblocking of the guide pipe 1.
[0032] In a preferred embodiment of this application, multiple guide pipes 1 are arranged at an angle, and the angle of inclination of each guide pipe 1 is set according to the connection requirements between floors. The angle of inclination of the guide pipe 1 ranges from 30° to 75°, where the angle refers to the minimum angle between the guide pipe 1 and the horizontal plane. By changing the angle of inclination of the guide pipe 1, the conveying speed of concrete in the guide pipe 1 can be adjusted. Within the above-mentioned angle range, the concrete in the guide pipe 1 can maintain a stable conveying speed while avoiding segregation of concrete due to excessive speed, thereby achieving efficient concrete transportation.
[0033] Reference Figure 2 In actual production, the track-laying construction unit, through site surveys, determined that the conveying device of this application could be laid from the right-line shield tunnel shaft of the ground platform in two arrangements, including but not limited to the following right-line and left-line arrangements. The right-line arrangement is where the concrete ground input end and the underground output end are on the same side, while the left-line arrangement is where the concrete ground input end and the underground output end are on different sides.
[0034] Specifically, such as Figure 2 On the right side, in the right-line layout, the conveying device includes two guide pipes 1 and one discharge pipe 2. The bottom end of the discharge pipe 2 is located at the centerline of the mixing tank in the right-line track area. Each guide pipe 1 and discharge pipe 2 has a hopper 3 installed at its top. Different hoppers 3 are fixed to the side of different floor slabs. The top guide pipe 1 is connected to the right-line shield tunnel opening of the ground platform. The two guide pipes 1 are connected sequentially along different inclination directions to form an S-shaped fold. The bottom guide pipe 1 is connected to the discharge pipe 2, thereby guiding and conveying the right-line shield tunnel opening of the ground platform to the mixing tank in the right-line track area.
[0035] Specifically, such as Figure 2 On the left side, in the left-line layout, the conveying device includes three guide pipes 1 and one discharge pipe 2. The bottom end of the discharge pipe 2 is located at the centerline of the mixing tank in the left-line track area. Each guide pipe 1 and discharge pipe 2 has a hopper 3 installed at its top. Different hoppers 3 are fixed to the side of different floor slabs. The top guide pipe 1 is connected to the right-line shield tunnel opening of the ground platform. The three guide pipes 1 are connected sequentially along an inclined direction, and the bottom guide pipe 1 is connected to the discharge pipe 2, thereby guiding and conveying the right-line shield tunnel opening of the ground platform to the mixing tank in the left-line track area.
[0036] The experimental principle of this embodiment is as follows: When concrete needs to be transported to underground floors, multiple guide pipes 1 are arranged at an angle according to a right-hand or left-hand line configuration. The discharge pipe 2 is installed vertically, and the hoppers 3 are fixedly installed on different floors. Concrete is poured into the guide pipe 1 from the top hopper 3. The concrete slides along the angle within the guide pipe 1, is transported downwards to the discharge pipe 2, and then to the mixing tank in the track area. This effectively avoids excessive vertical transport height of the concrete, prevents concrete segregation, and ensures concrete performance. An inspection window 5 is added to the upward-facing side of the guide pipe 1 to facilitate maintenance of each section of the guide pipe 1, allowing for timely dredging and unblocking. The guide pipe 1 is fixedly connected to the floor slab using auxiliary ropes 4, thereby improving the stability and firmness of the guide pipe 1 installation. This scheme enables long-distance, high-drop concrete transport while maintaining concrete performance, thus improving track laying efficiency.
[0037] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on this utility model are within the protection scope of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.
Claims
1. A concrete conveying device for precast track slabs, characterized in that, It includes a guide pipe (1) and a discharge pipe (2); the guide pipe (1) includes at least two, each of the guide pipes (1) is inclined, and multiple guide pipes (1) are connected in sequence, the discharge pipe (2) is vertically arranged, the top end of the discharge pipe (2) is connected to the bottom end of the lowest guide pipe (1), and the top end of the guide pipe (1) and the top end of the discharge pipe (2) are both provided with a hopper (3), and the hopper (3) is fixedly connected to the floor slab.
2. The precast track slab concrete conveying device according to claim 1, characterized in that, The guide pipe (1) is provided with a connection port (11) at one end away from the hopper (3), and the end face of the connection port (11) is parallel to the end face of the hopper (3) adjacent to the guide pipe (1).
3. The precast track slab concrete conveying device according to claim 1, characterized in that, Auxiliary ropes (4) are fixedly connected to the three equal division points of the side wall of the guide tube (1), and the end of the auxiliary rope (4) away from the guide tube (1) is used to fix it to the floor slab.
4. A precast track slab concrete conveying device according to claim 3, characterized in that, The auxiliary rope (4) is fixedly connected to two sub-ropes (41) at one end near the guide tube (1), and the two sub-ropes (41) are respectively fixedly connected to two different points on the periphery of the guide tube (1).
5. A precast track slab concrete conveying device according to claim 1, characterized in that, The guide tube (1) has at least two inspection windows (5) spaced apart on the side facing upwards, and a cover plate (51) is slidably connected to the inspection window (5).
6. A precast track slab concrete conveying device according to claim 5, characterized in that, The inspection window (5) is 500mm long and 200mm wide.
7. A precast track slab concrete conveying device according to claim 5 or 6, characterized in that, The spacing between the multiple inspection windows (5) is 150mm-200mm.
8. A precast track slab concrete conveying device according to claim 1, characterized in that, The inclination angle of the guide tube (1) ranges from 30° to 75°.