A neck bending pipe positioning structure in a base plate mold

Abstract

The utility model relates to base plate mould technical field, specifically disclose a kind of necking pipe positioning structure in base plate mould, including as arc bending bolt sleeve necking pipe, necking pipe is installed in base plate mould, one end of necking pipe is close to the inboard wall of base plate mould, the other end of necking pipe is close to the surface of recess module, recess module is fixedly connected with the inboard wall of base plate mould, the surface of recess module is equipped with the limiting projection for positioning necking pipe, limiting projection inserts the end portion cavity of necking pipe, the limiting shaft for positioning necking pipe is equipped on the side wall of base plate mould, limiting shaft is inserted into the end portion cavity of necking pipe away from recess module after being inserted through the side wall of base plate mould. Necking pipe is positioned by limiting shaft and limiting projection, so that necking pipe positioning is accurate, and the accuracy of necking pipe on base plate is improved.

Description

Technical Field

[0001] This utility model relates to the field of base plate mold technology, specifically a bent-neck tube positioning structure in a base plate mold. Background Technology

[0002] When laying ballastless railway track, the base plate is connected and fixed to the upper track slab body by bolts. The side of the base plate has outward-protruding bolts. Sometimes, curved bolts are used to pass through two different sides of the base plate, and the side that passes through is a recessed part that is not on the same plane as the main plane of the base plate. In this case, the neck tube is usually embedded during the prefabrication of the base plate. When the base plate is installed, the curved bolt is passed through the neck tube, which is equivalent to the pre-embedded sleeve of the curved bolt. During the prefabrication of the base plate, the neck tube is tied to the steel reinforcement of the base plate. After the base plate is demolded, the neck tube is embedded in the base plate. The installation position of the neck tube needs to be measured during the binding, which is cumbersome. Moreover, the position of the neck tube may shift during concrete pouring, resulting in inaccurate positioning of the neck tube. Utility Model Content

[0003] This invention addresses the problem of cumbersome and inaccurate positioning of the bent tube in a base plate mold by providing a precise and convenient positioning structure for the bent tube in a base plate mold.

[0004] To solve the above-mentioned technical problems, this utility model includes a bent tube as an arc-shaped bent bolt sleeve. The bent tube is installed in a base plate mold. One end of the bent tube is close to the inner sidewall of the base plate mold, and the other end of the bent tube is close to the surface of a recessed module located in the base plate mold. The recessed module is fixedly connected to the inner sidewall of the base plate mold. Its structural feature is that the surface of the recessed module is provided with a fixed limiting protrusion for positioning the bent tube. The limiting protrusion is inserted into the end cavity of the bent tube. The sidewall of the base plate mold is provided with a detachable limiting shaft for positioning the bent tube. The limiting shaft passes through the sidewall of the base plate mold and is inserted into the end cavity of the bent tube away from the recessed module.

[0005] With the above structure, when prefabricating the base plate, first assemble the base plate mold. After the base plate mold is assembled, place the bent tube into the base plate mold, inserting one end of the bent tube near the recessed module onto the positioning protrusion. Then, bring the other end of the bent tube close to the inner wall of the base plate mold with the limiting shaft, ensuring the end of the bent tube is aligned with the insertion position of the limiting shaft. When the bent tube is inserted into the positioning protrusion, adjust its position to keep the positioning protrusion inside the bent tube and prevent it from detaching. When the end of the bent tube... When the positioning shaft is aligned with the insertion position, insert it through the side wall of the base plate mold into the bent tube. Then, fix the positioning shaft to the side wall of the base plate mold. At this point, the two ends of the bent tube are respectively inserted into the positioning shaft and the positioning protrusion. The position of the bent tube is determined. Then, tie the reinforcing steel of the base plate, and pour concrete grout into the base plate mold. After the base plate solidifies, remove the positioning shaft from the base plate mold, disassemble the base plate mold, and the positioning protrusion will detach from the bent tube as the mold is disassembled. Then, lift the base plate away. After the base plate mold is assembled, the insertion positions of the positioning protrusion and the positioning shaft are fixed. There is no need to measure the positioning position of the bent tube. The two ends of the bent tube are inserted into the positioning shaft and the positioning protrusion, and the position of the bent tube is fixed. Its position will not change when pouring concrete grout, making the position of the bent tube in the base plate more accurate.

[0006] The limiting shaft is fixedly connected to a shaft mounting flange, which is located outside the base plate mold and is detachably connected to the base plate mold.

[0007] The outer side wall of the base plate mold is provided with a fixed flange corresponding to the shaft mounting flange. The fixed flange and the side wall of the base plate mold are respectively provided with flange through holes and mold side wall through holes for limiting the shaft to pass through. The flange through holes and the mold side wall through holes are connected.

[0008] The shaft mounting flange and the fixed flange are connected by at least two hex bolts.

[0009] Both ends of the bent tube are fixedly connected with flange plates to facilitate the connection between the bent tube and the limiting shaft and the limiting protrusion.

[0010] This invention positions the bent tube in the base plate mold by inserting limiting shafts and limiting protrusions at both ends of the bent tube. Since the insertion positions of the limiting shafts and the positions of the limiting protrusions are fixed, the position of the bent tube after positioning is fixed, eliminating the need for measurement and positioning of the bent tube each time, making positioning more accurate and convenient. The position of the bent tube is determined after the two ends of the bent tube are inserted by the limiting shafts and limiting protrusions, and the position will not shift during concrete grout pouring, thus improving the positioning accuracy of the bent tube. The limiting shafts can be detachably installed on the base plate mold through shaft mounting flanges and fixing flanges, making the installation and positioning of the limiting shafts convenient and saving installation time. Flange plates are provided at both ends of the bent tube to facilitate the docking and installation of the bent tube with the limiting shafts and limiting protrusions. Attached Figure Description

[0011] Figure 1 This is a plan view of the elbow tube positioning structure of this utility model; Figure 2 for Figure 1 A schematic diagram of the AA cross-section; Figure 3 A plan view of the base plate mold after removing the bent tube and the limiting shaft; Figure 4 (a) is Figure 3 Enlarged view of point B in the image. Figure 4 (b) is Figure 4 (a) View from direction C; Figure 5 (a) is a structural schematic diagram of the limiting shaft and the shaft mounting flange. Figure 5 (b) is Figure 5 (a) View from direction D; Figure 6 For Figure 1 A partial schematic diagram of the base plate prefabricated using the base plate mold; Figure 7 A plan view of the positioning structure of the elbow pipe when flange plates are connected to both ends of the elbow pipe; Figure 8 for Figure 7 EE cross-sectional schematic diagram; In the diagram: 1. Necked pipe; 11. First flange plate; 12. Second flange plate; 2. Limiting shaft; 21. Shaft mounting flange; 211. Internal threaded through hole; 212. Countersunk hole; 3. Fixed flange; 31. Flange through hole; 32. Internal threaded hole; 4. Socket head bolt; 5. Limiting protrusion; 100. Base plate mold; 101. Recessed module; 102. Mold side wall through hole; 200. Base plate. Detailed Implementation

[0012] Reference Figures 1-8A positioning structure for a bent tube in a base plate mold includes a bent tube 1 installed within the base plate mold 100, and limiting shafts 2 and limiting protrusions 5 for positioning both ends of the bent tube 1. The bent tube 1 serves as a sleeve for the arc-shaped bent bolts during the installation of the base plate 200. The limiting shafts 2 and limiting protrusions 5 are inserted into the cavities of the bent tube 1 from both ends, thereby achieving positioning of the bent tube 1. The position of the bent tube 1 will not shift after positioning. The bent tube 1 is manufactured as a single piece using a round steel tube. Figures 1-3 As shown in Figures 7-8, a recessed module 101 is provided inside the base plate mold 100. The recessed module 101 is fixedly connected to the inner side wall of the base plate mold 100, so that the pre-formed base plate 200 has a recessed part. Of course, the positioning structure of the bent tube 1 of this utility model can also be used in the base plate mold 100 without the recessed module 101. This utility model is described with the example of the recessed module 101 in the base plate mold 100.

[0013] Reference Figures 1-5 One end of the bent tube 1, away from the recessed module 101, is close to the inner wall of the base plate mold 100. A detachable limiting shaft 2 is provided on the side wall of the base plate mold 100. The limiting shaft 2 passes through the side wall of the base plate mold 100 and is inserted into the end cavity of the bent tube 1 away from the recessed module 101. The limiting shaft 2 plays a positioning role for the bent tube 1. Specifically, the limiting shaft 2 can be a tube or rod with an outer diameter slightly smaller than the inner diameter of the bent tube 1. The other end of the bent tube 1 is close to the surface of the recessed module 101. A fixed limiting protrusion 5 is provided on the surface of the recessed module 101. The limiting protrusion 5 is inserted into the end cavity of the bent tube 1. The limiting protrusion 5 also plays a positioning role for the bent tube 1. Specifically, the outer diameter of the limiting protrusion 5 is slightly smaller than the inner diameter of the bent tube 1. When the two ends of the bent tube 1 are respectively inserted into the limiting shaft 2 and the limiting protrusion 5, the position of the bent tube 1 is limited, and the bent tube 1 does not shift when pouring concrete grout.

[0014] Reference Figures 1-5 7-8, The limiting shaft 2 is fixedly connected to a shaft mounting flange 21. The shaft mounting flange 21 is located outside the base plate mold 100 and is detachably connected to the base plate mold 100. Specifically, the outer wall of the base plate mold 100 is provided with a fixing flange 3 corresponding to the shaft mounting flange 21. A flange through hole 31 is opened at the center of the fixing flange 3. A mold side wall through hole 102 is opened on the side wall of the base plate mold 100. The flange through hole 31 communicates with the mold side wall through hole 102, so that the limiting shaft 2 can be inserted into the end cavity of the bent tube 1 from outside the base plate mold 100. The shaft mounting flange 21 and the fixing flange 3 are connected by at least two bolts, specifically hexagon socket head cap screws 4, such as... Figure 1 , 2As shown in Figures 4, 5, 7, and 8, two internally threaded holes 32 are formed on the outer surface of the flange through hole 31. The shaft mounting flange 21 has internally threaded through holes 211 corresponding to the internally threaded holes 32. One end of each internally threaded through hole 211 has a countersunk hole 212 adapted to the head of the hexagon socket head cap screw 4. The shaft mounting flange 21 is connected to the fixed flange 3 by the hexagon socket head cap screw 4, thereby achieving the installation and positioning of the limiting shaft 2. Figure 7 , 8 As shown, a first flange plate 11 and a second flange plate 12 are fixedly connected to both ends of the bent tube 1, respectively. The first flange plate 11 is located at the end of the bent tube 1 near the limiting shaft 2, and the second flange plate 12 is located at the end of the bent tube 1 near the limiting protrusion 5. The flange plates increase the contact area between the two ends of the bent tube 1 and the inner wall of the base plate mold 100 and the recessed module 101, making it easier to hold the end of the bent tube 1 by hand and facilitating the docking of the bent tube 1 with the limiting shaft 2 and the limiting protrusion 5.

[0015] Working principle: Assemble the base plate mold 100, then insert the end of the bent tube 1 near the recessed module 101 into the limiting protrusion 5. Rotate the bent tube 1 so that the other end of the bent tube 1 moves closer to the inner wall of the base plate mold with the limiting shaft 2. When the bent tube 1 rotates, the limiting protrusion 5 remains in the cavity of the bent tube 1. Do not allow the limiting protrusion 5 to separate from the bent tube 1. When the opening of the other end of the bent tube 1 is directly opposite the through hole 102 of the mold side wall, insert the limiting shaft 2 through the flange through hole 31 and the mold side wall through hole 102 into the end cavity of the bent tube 1. After the limiting shaft 2 is inserted into the bent tube 1, the internal thread on the shaft mounting flange 21 is connected. Align hole 211 with the corresponding internal threaded hole 32 on the fixing flange 3, and then screw the hex bolt 4 onto the internal threaded through hole 211 and the internal threaded hole 32 to fix the position of the shaft mounting flange 21 and the limiting shaft 2. Then tie the reinforcing bars of the base plate 200. Alternatively, the reinforcing bars of the base plate 200 can be tied first, and then the elbow pipe 1 can be installed. After the elbow pipe 1 and the reinforcing bars are installed, pour concrete grout into the base plate mold 100. After the base plate 200 has solidified, remove the limiting shaft 2 from the base plate mold 100, and then remove the base plate mold 100. The limiting protrusion 5 will detach from the elbow pipe 1 as the base plate mold 100 is removed. Figure 6 For use Figures 1-5 A partial schematic diagram of the base plate 200 obtained from the base plate mold 100; (e.g., using...) Figure 7 , 8The elbow 1 has flange plates at both ends. The area of ​​the flange plates is larger than that of the elbow 1, resulting in a larger contact area between the flange plates and the inner wall of the base plate mold 100 and the surface of the recessed module 101. This makes it easier for the elbow 1 to align with the limiting protrusion 5 and the limiting shaft 2. When the limiting protrusion 5 is inserted into the elbow 1 and the elbow 1 is rotated, the limiting protrusion 5 is less likely to come out of the elbow 1. This utility model positions the elbow 1 by inserting the limiting shaft 2 and the limiting protrusion 5 at both ends. The elbow 1 is accurately positioned, and no measurement is required for each positioning, making it more convenient to use. The limiting shaft 2 can be detachably installed on the base plate mold 100 via the shaft mounting flange 21, allowing for quick installation and accurate positioning. The position of the elbow 1 will not shift during concrete grout pouring, improving the accuracy of the elbow 1 position on the base plate 200 and facilitating the passage of the curved bolts through the elbow 1 during subsequent installation of the base plate 200.

[0016] This utility model discloses a positioning structure for a bent tube in a base plate mold. The two ends of the bent tube are positioned by limiting protrusions and limiting shafts, ensuring accurate positioning. No measurement is required during installation, making it convenient and quick to use. The positioned bent tube will not shift, improving the accuracy of its position in the base plate mold. Flange plates can be fixedly connected to both ends of the bent tube, facilitating the connection between the bent tube and the limiting shafts and protrusions. This utility model features a simple structure, convenient use and installation, and accurate bent tube positioning.

Claims

1. A bent-neck tube positioning structure in a base plate mold, comprising a bent-neck tube (1) serving as an arc-shaped bent bolt sleeve, the bent-neck tube (1) being installed inside a base plate mold (100), one end of the bent-neck tube (1) being close to the inner wall of the base plate mold (100), and the other end of the bent-neck tube (1) being close to the surface of a recessed module (101) located inside the base plate mold (100), the recessed module (101) being fixedly connected to the inner wall of the base plate mold (100), characterized in that: The recessed module (101) has a fixed limiting protrusion (5) for positioning the bent tube (1) on its surface. The limiting protrusion (5) is inserted into the end cavity of the bent tube (1). The side wall of the base plate mold (100) has a detachable limiting shaft (2) for positioning the bent tube (1). The limiting shaft (2) passes through the side wall of the base plate mold (100) and is inserted into the end cavity of the bent tube (1) away from the recessed module (101).

2. The bent tube positioning structure in the base plate mold according to claim 1, characterized in that: The limiting shaft (2) is fixedly connected to a shaft mounting flange (21), which is located outside the base plate mold (100). The shaft mounting flange (21) is detachably connected to the base plate mold (100).

3. The bent tube positioning structure in the base plate mold according to claim 2, characterized in that: The outer side wall of the base plate mold (100) is provided with a fixed flange (3) corresponding to the shaft mounting flange (21). The fixed flange (3) and the side wall of the base plate mold (100) are respectively provided with a flange through hole (31) for the limiting shaft (2) to pass through and a mold side wall through hole (102). The flange through hole (31) and the mold side wall through hole (102) are connected.

4. The bent tube positioning structure in the base plate mold according to claim 3, characterized in that: The shaft mounting flange (21) and the fixed flange (3) are connected by at least two internal hex bolts (4).

5. The bent tube positioning structure in the base plate mold according to claim 1, characterized in that: Both ends of the bent tube (1) are fixedly connected with flange plates to facilitate the docking of the bent tube (1) with the limiting shaft (2) and the limiting protrusion (5).

Images