Novel through-wall rod mold

Abstract

The utility model discloses a novel wall bushing mould belongs to prefabricated concrete wall manufacturing technical field. The mould includes mould platform, the top surface of mould platform is provided with trapezoidal base, the top surface center of trapezoidal base is provided with top locating shaft, still includes center rod body, the outside of center rod body is provided with outer layer of wrap, the bottom surface of center rod body is provided with bottom recess hole upwards, and top locating shaft and bottom recess hole are connected in interference fit. The utility model mould has utilized the interference fit connection of top locating shaft and center rod body, has completed the positioning to center rod body, makes the damage degree of mould platform reduce to improve the service life of mould platform, and the setting of outer layer of wrap makes center rod body and outer layer of wrap can be pulled out when prefabricated concrete wall solidifies completely, improves the use efficiency of the utility model mould, simultaneously, improves the quality of the reserved hole on prefabricated concrete wall, and the structure is simple, efficient, is suitable in the processing process of prefabricated concrete wall and promotes application.

Description

Technical Field

[0001] This utility model relates to the field of precast concrete wall manufacturing technology, specifically a novel through-wall rod mold. Background Technology

[0002] In the manufacturing process of precast concrete walls, through-wall molds are needed to process the pre-reserved holes in the precast concrete walls.

[0003] Currently, referring to Figure 2 As shown, a traditional through-wall rod mold includes a mold base 1, a rod body 11, a top nut 12, a bottom threaded shaft 13, and a bottom nut 14. Before positioning the rod body 11 on the mold base 1, a through hole 15 needs to be opened on the mold base 1 according to the opening requirements of the precast concrete wall. The bottom nut 14 is welded to the bottom surface of the mold base 1 below the through hole 15. The bottom threaded shaft 13 at the bottom end of the rod body 11 is used to pass through the through hole 15 and threadedly connect with the bottom nut 14 to complete the positioning of the rod body 11. The top end of the rod body 11 is also provided with a top nut 12 for rotating the rod body 11, thereby pulling the rod body 11 out of the precast concrete wall.

[0004] However, when using traditional through-wall rod molds, the mold table 1 is damaged due to the opening of the through hole 15, which is not conducive to its long-term cyclic use. At the same time, the rod 11 can generally only be pulled out before the precast concrete wall is completely solidified. Otherwise, the precast concrete wall will tightly adhere to the rod 11, making it difficult to pull out the rod 11. Pulling out the rod 11 before the precast concrete wall is completely solidified makes it impossible to guarantee the quality of the reserved hole on the precast concrete wall, and the time for pulling out the rod 11 is not easy to control, thus reducing the efficiency of traditional through-wall rod molds. Therefore, a new type of through-wall rod mold is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a new type of through-wall rod mold to solve the problems mentioned in the background art, such as the damage to the existing mold platform which is not conducive to long-term use and the inability to guarantee the quality of the reserved hole caused by the rod being pulled out before the precast concrete wall is fully solidified.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel through-wall rod mold, comprising a mold platform, a trapezoidal base on the top surface of the mold platform, a top positioning shaft at the center of the top surface of the trapezoidal base, and a central rod body, an outer sleeve on the outer side of the central rod body, a bottom recessed hole on the bottom surface of the central rod body, the top positioning shaft and the bottom recessed hole being interference-fitted, and the outer sleeve being made of a soft material.

[0007] Preferably, the outer diameter of the outer sheath decreases from top to bottom.

[0008] Preferably, the central rod is made of steel.

[0009] Preferably, the outer sheath is made of polyurethane or rubber.

[0010] Preferably, the top positioning shaft is made of polyurethane.

[0011] Preferably, the top surface of the central rod is provided with a U-shaped through groove extending to the bottom recess, and both ends of the U-shaped through groove are located on the top surface of the central rod.

[0012] Preferably, the top of the central rod is provided with a top protrusion.

[0013] Preferably, the central rod and the outer sheath are connected by an interference fit.

[0014] Preferably, the depth of the bottom recessed hole is equal to the length of the top positioning shaft.

[0015] Preferably, the trapezoidal base is fixedly connected to the top surface of the mold table by welding.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This new mold utilizes the interference fit connection between the top positioning shaft and the central rod to complete the positioning of the central rod, thereby reducing the damage to the mold table and improving its service life. The outer sleeve allows the central rod and the outer sleeve to be pulled out when the precast concrete wall is completely solidified, improving the efficiency of this new mold. At the same time, it improves the quality of the reserved holes on the precast concrete wall. The structure is simple and efficient, and it is suitable for widespread application in the processing of precast concrete walls. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings. Obviously, the drawings described below are merely some embodiments of this utility model, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. Wherein: Figure 1 This is an overall structural view of the present invention; Figure 2 This is a schematic diagram of the structure of a through-wall rod mold in the prior art; Figure 3 This is a schematic diagram of the U-shaped through groove in this utility model; Figure 4 This is a top view of the U-shaped through groove in this utility model.

[0018] In the diagram: 1. Mold table; 11. Rod body; 12. Top nut; 13. Bottom threaded shaft; 14. Bottom nut; 15. Through hole; 2. Trapezoidal base; 21. Top positioning shaft; 3. Center rod body; 31. Top protrusion; 32. Outer sheath; 33. Bottom recessed hole; 4. U-shaped through groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] Reference Figure 1-4 As shown, this utility model provides a technical solution for a novel through-wall rod mold: A novel through-wall rod mold includes a mold platform 1, a trapezoidal base 2 on the top surface of the mold platform 1, a top positioning shaft 21 at the center of the top surface of the trapezoidal base 2, a central rod body 3, an outer sleeve 32 on the outer side of the central rod body 3, and a bottom recess 33 on the bottom surface of the central rod body 3.

[0023] The top positioning shaft 21 and the bottom recessed hole 33 are connected by an interference fit, and the outer sheath 32 is made of a soft material.

[0024] When using this new type of mold, the bottom recessed hole 33 is interference-fitted with the top positioning shaft 21, thereby quickly positioning the central rod 3 together with the outer sheath 32. Then, concrete is poured on the mold table 1. After the precast concrete wall has completely solidified, the central rod 3 is pulled upward. At this time, since the outer sheath 32 is made of a soft material with elasticity, the central rod 3 together with the outer sheath 32 can be pulled out of the precast concrete wall relatively smoothly.

[0025] Reference Figure 1 As shown, in an optional embodiment, the outer diameter of the outer sheath 32 decreases from top to bottom. It should be noted that the outer sidewall of the outer sheath 32 is continuous and smooth.

[0026] It should be noted that by setting the outer diameter of the outer sheath 32 to decrease from top to bottom, when the central rod 3 together with the outer sheath 32 needs to be pulled out of the precast concrete wall, after the upper layer of the outer sheath 32 is pulled out of the precast concrete wall, the lower layer of the outer sheath 32 will be pulled out of the precast concrete wall more smoothly, thereby improving the overall removal efficiency of the central rod 3 and the outer sheath 32, and thus improving the utilization efficiency of this mold.

[0027] In an optional embodiment, the central rod 3 is made of steel.

[0028] It should be noted that the central rod 3 is made of steel, which has good strength and toughness and can withstand large tensile and compressive forces, thus improving the durability of the central rod 3 and ensuring the stability of the central rod 3 together with the outer sheath 32 on the mold table 1. This makes the quality of the reserved holes in the precast concrete wall more stable and reliable.

[0029] In an optional embodiment, the outer sheath 32 is made of polyurethane or rubber.

[0030] It should be noted that the outer sheath 32 can also be made of nylon. The elasticity of polyurethane, rubber or nylon is utilized. When the central rod 3 and the outer sheath 32 are pulled out of the precast concrete wall, the outer sheath 32 deforms, making it easier to pull out. This improves the overall removal efficiency of the central rod 3 and the outer sheath 32, thereby improving the utilization efficiency of this mold.

[0031] In an optional embodiment, the top positioning shaft 21 is made of polyurethane.

[0032] It should be noted that the top positioning shaft 21 is made of polyurethane, which makes it elastic, thus facilitating an interference fit with the bottom recess 33 and making it easier to connect the center rod 3 and the top positioning shaft 21.

[0033] Reference Figure 3 and Figure 4As shown, in an optional embodiment, a U-shaped through groove 4 extending to the bottom recess 33 is provided on the top surface of the central rod 3, and both ends of the U-shaped through groove 4 are located on the top surface of the central rod 3.

[0034] It should be noted that after the precast concrete wall has solidified, when it is necessary to pull the central rod 3 along with the outer sheath 32 out of the precast concrete wall, cold water can be injected into one end of the U-shaped channel 4 located on the top surface of the central rod 3. The cold water will flow through the U-shaped channel 4 located inside the central rod 3 and flow out from its other end. During this process, the temperature of the central rod 3 will drop, thereby causing the temperature of the outer sheath 32 to drop. Due to the thermal expansion and contraction effect, the volume of the outer sheath 32 will shrink, making it easier for the central rod 3 along with the outer sheath 32 to be moved out of the precast concrete wall, further improving the efficiency of this mold.

[0035] Reference Figure 1 , Figure 3 and Figure 4 As shown, in an optional embodiment, a top protrusion 31 is provided at the top of the central rod 3.

[0036] It should be noted that the top protrusion 31 is designed to facilitate the user to apply an upward force to the central rod 3, thereby making it easier for the central rod 3, together with the outer sheath 32, to be pulled out of the precast concrete wall.

[0037] In an optional embodiment, the central rod 3 and the outer sheath 32 are connected by an interference fit. It should be noted that this facilitates the assembly and disassembly of the central rod 3 and the outer sheath 32, and makes it easy to replace the outer sheath 32 when it wears out due to long-term use.

[0038] In an optional embodiment, the depth of the bottom recess 33 is equal to the length of the top positioning shaft 21. It should be noted that the top positioning shaft 21 will be completely submerged in the bottom recess 33. When pouring concrete, it is more difficult for the concrete to enter the gap between the top surface of the central rod 3, the outer sheath 32, and the trapezoidal base 2, thereby reducing the difficulty of pulling the central rod 3 and the outer sheath 32 out of the precast concrete wall.

[0039] In an optional embodiment: the trapezoidal base 2 is fixedly connected to the top surface of the mold table 1 by welding. After the mold is used up, the trapezoidal base 2 can be knocked off from the top surface of the mold table 1, and the top surface of the mold table 1 can be polished for reuse.

[0040] The working principle of this new type of through-wall rod mold will now be explained through its usage process: When using this new type of mold, firstly, the trapezoidal base 2 is welded to the top surface of the mold table 1. Then, the bottom recess 33 is connected to the top positioning shaft 21 with an interference fit, thereby positioning the central rod 3 together with the outer sheath 32. Then, concrete is poured on the mold table 1. The concrete pouring process is an existing process and will not be described in detail here. After that, after the precast concrete wall has completely solidified, the central rod 3 is pulled upward through the top protrusion 31. At this time, because the outer sheath 32 is elastic, the central rod 3 together with the outer sheath 32 can be pulled out from the precast concrete wall relatively smoothly. Finally, the trapezoidal base 2 is knocked off from the top surface of the mold table 1, and the top surface of the mold table 1 is polished, so that it can be used again.

[0041] This novel mold utilizes the interference fit between the top positioning shaft 21 and the central rod 3 to position the central rod 3, thereby reducing the damage to the mold platform 1 and extending its service life. The outer sleeve 32 allows the central rod 3 and the outer sleeve 32 to be pulled out when the precast concrete wall is fully solidified, improving the efficiency of the mold and enhancing the quality of the pre-drilled holes in the precast concrete wall. The simple and efficient structure makes it suitable for widespread application in the processing of precast concrete walls.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel through-wall rod mold, comprising a mold platform (1), characterized in that: The top surface of the mold platform (1) is provided with a trapezoidal base (2), and a top positioning shaft (21) is provided at the center of the top surface of the trapezoidal base (2). It also includes a central rod (3), the outer side of which is covered with an outer sheath (32), and the bottom surface of the central rod (3) is provided with a bottom recess (33). The top positioning shaft (21) and the bottom recessed hole (33) are connected by an interference fit; The outer sheath (32) is made of a soft material.

2. The novel through-wall rod mold according to claim 1, characterized in that: The top surface of the central rod (3) is provided with a U-shaped through groove (4) extending to the bottom recess (33), and both ends of the U-shaped through groove (4) are located on the top surface of the central rod (3).

3. The novel through-wall rod mold according to claim 2, characterized in that: The top of the central rod (3) is provided with a top protrusion (31).

4. The novel through-wall rod mold according to claim 3, characterized in that: The central rod (3) and the outer sheath (32) are connected by an interference fit.

5. A novel through-wall rod mold according to claim 4, characterized in that: The depth of the bottom recess (33) is equal to the length of the top positioning shaft (21).

6. A novel through-wall rod mold according to claim 5, characterized in that: The trapezoidal base (2) is fixedly connected to the top surface of the mold table (1) by welding.

7. A novel through-wall rod mold according to claim 6, characterized in that: The outer diameter of the outer sheath (32) decreases from top to bottom.

8. A novel through-wall rod mold according to claim 7, characterized in that: The central rod (3) is made of steel.

9. A novel through-wall rod mold according to claim 8, characterized in that: The outer sheath (32) is made of polyurethane or rubber.

10. A novel through-wall rod mold according to claim 9, characterized in that: The top positioning shaft (21) is made of polyurethane.

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