Prefabricated concrete wall and method of assembly thereof

Abstract

This invention discloses a prefabricated concrete wall and its assembly method, belonging to the field of concrete wall technology. It includes multiple interconnected prefabricated concrete wall sections, each comprising an upper wall, a lower wall, and a lifting component for controlling the vertical movement of the upper wall. The lifting component includes a threaded sleeve and a screw. A first blind hole is formed at the center of the bottom of the upper wall, and the threaded sleeve is embedded within the first blind hole. The screw is internally threaded into the threaded sleeve. A second blind hole is formed at the center of the top of the lower wall, and the lower end of the screw extends into the second blind hole and is connected to a bearing disposed within the second blind hole. An operating hole is provided on the lower side of the front of the lower wall, communicating with the second blind hole, and the lower end of the screw is located within the operating hole. This invention provides a prefabricated concrete wall and its assembly method that are time-saving, labor-saving, safe, and stable.

Description

Technical Field

[0001] This invention relates to the field of concrete wall technology, specifically to a prefabricated concrete wall and its assembly method. Background Technology

[0002] Nowadays, most houses are built with reinforced concrete structures. After the frame is poured and the exterior walls are built, various partition walls need to be designed inside. Construction workers usually use bricklaying to build partition walls. However, this bricklaying method is inefficient and consumes a lot of manpower.

[0003] For example, patent document CN 113565235 A discloses a prefabricated concrete wall, including: a wall body with a connecting plate along its top; and a jacking assembly located within the wall body and connected to the connecting plate. The jacking assembly is used to push the connecting plate upwards to detach it from the wall body, and to pull the connecting plate back to the top of the wall. This invention has a simple structure and is mainly used for prefabricating walls. However, this concrete wall is a single piece, making transportation and installation inconvenient. Furthermore, assembly is achieved by raising the upper connecting plate to meet the ceiling. When the wall height is high, controlling the raising of the connecting plate and repairing gaps caused by the raising are very inconvenient. Additionally, this concrete wall has numerous and large holes, making repairs difficult.

[0004] For example, patent document CN 115354774 A discloses a prefabricated concrete wall, including a lower wall and an upper wall. The top of the lower wall has a rebar hole, and an assembly head installed on top of the rebar hole is also included. The assembly head can be inserted into the assembly hole. The assembly head has a through hole allowing the rebar to pass through. The inner wall of the through hole is equipped with a vibration mechanism that causes the rebar to vibrate. This vibration mechanism can lock the rebar before grouting. In this prefabricated concrete wall, the grout drives a drive mechanism, which in turn drives the vibration mechanism away from the rebar. A compression spring causes the rebar to extend and enter the assembly hole. During this extension, the vibration mechanism causes the rebar to vibrate. Simultaneously with grouting, the rebar extends into the assembly hole and vibrates, ensuring close contact between the grout and the rebar surface. This achieves the effect of eliminating grouting gaps and providing high connection strength. However, this invention cannot solve the aforementioned technical problems. Summary of the Invention

[0005] In view of this, the present invention addresses the shortcomings of the prior art by providing a time-saving, labor-saving, safe and stable prefabricated concrete wall and its assembly method.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a prefabricated concrete wall, comprising multiple interconnected prefabricated concrete wall bodies, each prefabricated concrete wall body including an upper wall body, a lower wall body, and a lifting component for controlling the up-and-down movement of the upper wall body. The lifting component includes a threaded sleeve and a screw rod. A first blind hole is opened at the center of the bottom of the upper wall body, the threaded sleeve is embedded in the first blind hole, and the screw rod is internally threaded to the threaded sleeve. A second blind hole is opened at the center of the top of the lower wall body, the lower end of the screw rod extends into the second blind hole and is connected to a bearing disposed in the second blind hole. An operating hole is provided on the lower side of the front of the lower wall body, the operating hole communicating with the second blind hole, and the lower end of the screw rod is located in the operating hole.

[0007] Furthermore, two steel bars are pre-embedded in the lower wall, with the two steel bars located on both sides of the second blind hole, and insertion holes are opened in the upper wall corresponding to the positions of the two steel bars, with the upper ends of the steel bars inserted into the insertion holes.

[0008] Furthermore, the precast concrete wall is a foamed concrete wall.

[0009] Furthermore, the two adjacent precast concrete walls are interlocked.

[0010] Furthermore, a screw fixing component is provided in the operating hole. The screw fixing component includes a fixing plate and a locking bolt. The upper end of the fixing plate is fixedly connected to the bottom of the bearing. A screw hole is provided on the fixing plate, and the locking bolt is threaded into the screw hole. The locking bolt is perpendicular to the screw.

[0011] Furthermore, a drive connector is provided at the lower end of the screw, and the drive connector is a hexagonal prism or a gear.

[0012] Furthermore, the assembly method for the prefabricated concrete wall includes the following steps:

[0013] S1. Set the width and number of precast concrete walls according to the width of the wall opening, so that the overall width of multiple precast concrete walls after being joined together is consistent with the width of the wall opening; set the height of the precast concrete walls according to the height of the wall opening, so that the height of the precast concrete walls is less than the height of the wall opening in the initial state.

[0014] S2. Connect multiple precast concrete wall sections sequentially and place them inside the wall opening;

[0015] S3. Use a drive component to connect multiple drive connectors, causing multiple screws to rotate, thereby moving multiple upper wall components upward until they are in close contact with the top of the wall opening, and then fix the screws.

[0016] S4. Fill the gaps between the precast concrete wall and the left and right side walls of the wall opening, as well as the gaps between the upper and lower walls, with cement mortar. After curing, seal the operating hole to complete the wall assembly.

[0017] Furthermore, the driving component includes two uprights on both sides and a crossbar disposed between the two uprights. Multiple rotating shafts are evenly arranged on the crossbar. A driving gear is disposed at the upper end of the rotating shaft and a driving motor is disposed at the lower end. The driving gear meshes with the gear in a one-to-one correspondence.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] This invention relates to a prefabricated concrete wall system. Multiple prefabricated concrete wall sections are assembled together for partition wall construction. Compared to existing bricklaying methods, this significantly improves construction efficiency and reduces labor costs. The upper section of the prefabricated concrete wall can be raised and lowered relative to the lower section. By controlling the raising of the upper section to meet the top of the wall opening, the prefabricated concrete wall can be stably installed. Gaps around the perimeter and between the upper and lower sections are filled with cement mortar to ensure the wall's flatness and sealing.

[0020] This invention relates to a prefabricated concrete wall system. A screw rod is installed between the lower and upper wall sections. The upper part of the screw rod is threaded to the upper wall section, while the lower part is inserted into an operating hole in the lower wall section. Construction workers can drive the screw rod to rotate within the operating hole, thus moving the upper wall section upwards. Reinforcing bars are installed on both sides of the screw rod, serving both a guiding function and a reinforcing support, improving the stability of the wall. A drive connector is installed at the lower end of the screw rod, allowing for manual drive with a wrench or electric gear drive, offering high flexibility. Furthermore, the prefabricated concrete wall is made of foamed concrete, making it lightweight, convenient for transportation and lifting control, and providing good sound and heat insulation.

[0021] The assembly method of the prefabricated concrete wall of the present invention first selects the width and number of prefabricated concrete wall bodies according to the width of the wall opening, so as to minimize the gap between the wall body and the two sides of the wall opening. The initial height of the wall body, that is, the height when the upper wall body and the lower wall body are joined, is slightly less than the height of the wall opening to reserve space for raising. Then, a driving component is used to drive multiple screws to rotate simultaneously, so that multiple upper wall bodies are raised at the same time. On the one hand, the multiple prefabricated concrete wall bodies are tightly joined, on the other hand, the lifting driving force is reduced, and the construction efficiency is also improved. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0023] Figure 2 This is a cross-sectional view of Embodiment 1 of the present invention;

[0024] Figure 3This is a schematic diagram of the screw fixing component in Embodiment 1 of the present invention;

[0025] Figure 4 This is a front view of the driving component in Embodiment 2 of the present invention;

[0026] Figure 5 This is a front view of the driving component in Embodiment 3 of the present invention;

[0027] Figure 6 This is a front view of the driving component in Embodiment 4 of the present invention;

[0028] In the diagram, 1-upper wall, 2-lower wall, 3-threaded sleeve, 4-screw, 5-first blind hole, 6-second blind hole, 7-bearing, 8-operating hole, 9-reinforcing bar, 10-insertion hole, 11-positioning strip, 12-fixing plate, 13-locking bolt, 14-drive connector, 15-upper pole, 16-horizontal bar, 17-rotating shaft, 18-drive gear, 19-drive motor, 20-connecting rod, 21-fixing bolt, 22-rod body, 23-sleeve, 24-bolt. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0030] Example 1

[0031] like Figures 1-3 As shown, a prefabricated concrete wall includes multiple interconnected precast concrete wall sections. The precast concrete wall section includes an upper wall 1, a lower wall 2, and a lifting component for controlling the up-and-down movement of the upper wall 1. The lifting component includes a threaded sleeve 3 and a screw 4. A first blind hole 5 is opened at the center of the bottom of the upper wall 1, and the threaded sleeve 3 is embedded in the first blind hole 5. The screw 4 is internally threaded through the threaded sleeve 3. A second blind hole 6 is opened at the center of the top of the lower wall 2. The lower end of the screw 4 extends into the second blind hole 6 and is connected to a bearing 7 disposed in the second blind hole 6. An operating hole 8 is provided on the lower side of the front of the lower wall 2. The operating hole 8 communicates with the second blind hole 6, and the lower end of the screw 4 is located in the operating hole 8.

[0032] Specifically, two steel bars 9 are pre-embedded in the lower wall 2, and the two steel bars 9 are located on both sides of the second blind hole 6. The upper wall 1 has insertion holes 10 corresponding to the positions of the two steel bars 9, and the upper end of the steel bar 9 is inserted into the insertion hole 10.

[0033] The precast concrete wall is a foamed concrete wall, which is lightweight and has good sound and heat insulation properties.

[0034] In this embodiment of the invention, four precast concrete walls are connected by interlocking blocks on the side of each wall. The interlocking blocks are aligned with the front or back of the precast concrete wall. The interlocking blocks of two adjacent precast concrete walls are joined together. No interlocking blocks are provided on the side of the precast concrete wall that contacts the wall opening.

[0035] A positioning strip 11 is provided at the top of the upper wall 1, and a positioning groove is opened at the top of the wall opening. When the upper wall 1 is raised, the positioning strip 11 is engaged with the positioning groove to ensure the stability of the wall. Of course, in order to further improve the stability of the wall, in other embodiments, a positioning strip can also be provided at the bottom of the lower wall, and a positioning groove can be opened at the bottom of the wall opening. During construction, the positioning strip of the lower wall is first inserted into the positioning groove at the bottom of the wall opening.

[0036] A screw fixing component is provided in the operating hole 8. The screw fixing component includes a fixing plate 12 and a locking bolt 13. The upper end of the fixing plate 12 is fixedly connected to the bottom of the bearing 7. A screw hole is provided on the fixing plate 12, and the locking bolt 13 is threaded into the screw hole. The locking bolt 13 is perpendicular to the screw 4. The fixing plate 12 is arc-shaped, and the top of the fixing plate 12 is welded to the bottom of the outer fixing ring of the bearing 7.

[0037] The lower end of the screw 4 is provided with a drive connector 14, which is a hexagonal prism. The screw is driven to rotate by tightening the hexagonal prism with a wrench and turning it. When the upper wall abuts against the top surface of the wall opening, the locking bolt is tightened to fix the screw and prevent it from reversing.

[0038] Example 2

[0039] like Figure 4 As shown, the prefabricated concrete wall of this embodiment differs from that of Embodiment 1 in that:

[0040] The drive connector is a gear, and the gears of the four precast concrete walls are driven simultaneously by a drive component, so that the four upper walls are raised synchronously.

[0041] The driving component includes two uprights 15 on both sides and a crossbar 16 disposed between the two uprights 15. A plurality of rotating shafts 17 are evenly arranged on the crossbar 16. A driving gear 18 is disposed at the upper end of the rotating shaft 17 and a driving motor 19 is disposed at the lower end. The driving gear 18 meshes with the gears in a one-to-one correspondence.

[0042] The assembly method of the prefabricated concrete wall according to an embodiment of the present invention includes the following steps:

[0043] S1. Set the width and number of precast concrete walls according to the width of the wall opening, so that the overall width of multiple precast concrete walls after being joined together is consistent with the width of the wall opening, and slightly smaller than the wall opening; set the height of the precast concrete walls according to the height of the wall opening, so that the height of the precast concrete walls is smaller than the height of the wall opening in the initial state.

[0044] S2. Connect multiple precast concrete wall sections sequentially and place them inside the wall opening;

[0045] S3. Fix the two uprights of the drive unit to both sides of the concrete wall, so that the four drive gears mesh with each other in a one-to-one manner. At the same time, start the four drive motors to make the four screws rotate synchronously, thereby moving multiple upper wall components upward until they are in close contact with the top of the wall opening. Then fix the screws.

[0046] S4. Fill the gaps between the precast concrete wall and the left and right side walls of the wall opening, as well as the gaps between the upper and lower walls, with cement mortar. After curing, seal the operating hole to complete the wall assembly.

[0047] Example 3

[0048] like Figure 5 As shown, the prefabricated concrete wall and its assembly method of this invention are further improvements on Embodiment 2, and the difference between them is as follows:

[0049] Both uprights 15 are provided with connecting plates on their rear sides. Both connecting plates are slidably connected with clamping plates on their upper sides. Both clamping plates are provided with connecting rods 20 on their opposite sides. One of the connecting rods 20 is provided with a insertion hole. A fixing bolt 21 is provided on the side of the insertion hole. The end of the other connecting rod 20 extends into the insertion hole, and the two connecting rods 20 are connected by the fixing bolt 21.

[0050] The assembly method of the prefabricated concrete wall according to an embodiment of the present invention includes the following steps:

[0051] S1. Set the width and number of precast concrete walls according to the width of the wall opening, so that the overall width of multiple precast concrete walls after being joined together is consistent with the width of the wall opening, and slightly smaller than the wall opening; set the height of the precast concrete walls according to the height of the wall opening, so that the height of the precast concrete walls is smaller than the height of the wall opening in the initial state.

[0052] S2. Connect multiple precast concrete wall sections sequentially and place them inside the wall opening;

[0053] S3. Fix the two uprights of the drive unit to both sides of the concrete wall, insert the two connecting plates into the gaps between the concrete wall and the wall opening on both sides, fix the two connecting rods with fixing bolts, and clamp the four precast concrete walls with the two clamping plates.

[0054] Then, the four drive gears are engaged one by one with the four gears, and the four drive motors are started at the same time to make the four screws rotate synchronously. This causes the multiple wall-mounted components to move upward under the clamping of the two clamping plates until they are in close contact with the top of the wall opening. Then, the screws are fixed with locking bolts.

[0055] S4. Fill the gaps between the precast concrete wall and the left and right side walls of the wall opening, as well as the gaps between the upper and lower walls, with cement mortar. After curing, seal the operating hole to complete the wall assembly.

[0056] The present invention relates to a prefabricated concrete wall and its assembly method, wherein a connecting plate is provided on the rear side of the upright, and a clamping plate is slidably connected to the upper side of the connecting plate. Two connecting rods on the inner side of the clamping plate are interlocked and fixedly connected by fixing bolts, thereby clamping before the upper wall is raised, improving the stability and smoothness of the raising process.

[0057] Example 4

[0058] like Figure 6 As shown, the prefabricated concrete wall and its assembly method of this invention are further improvements on Embodiment 3, and the difference between them is as follows:

[0059] The crossbar is a detachable rod body. Each rod body 22 is equipped with a rotating shaft 17, a drive gear 18 and a drive motor 19. Adjacent rod bodies 22 are telescopically connected through a sleeve 23. That is, one end of the sleeve 23 is fixedly connected to the left rod body 22, and the right rod body 22 is inserted into the sleeve 23. A bolt 24 is provided on the sleeve 23. After the position of the right rod body 22 is adjusted, the two rod bodies 22 are connected and fixed by tightening the bolt 24.

[0060] In actual construction, considering that the width and number of precast concrete walls vary according to the size of the wall openings, in order to improve the versatility of the drive components, this invention designs the crossbar as composed of multiple detachably connected rods. This makes it easy to adjust the position and number of drive gears on the rods according to the width and number of precast concrete walls, making it flexible and convenient to use. After use, the drive components can be disassembled for easy transportation and carrying.

[0061] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for assembling prefabricated concrete walls, characterized in that, Includes the following steps: S1. Set the width and number of precast concrete walls according to the width of the wall opening, so that the overall width of multiple precast concrete walls after being joined together is consistent with the width of the wall opening; set the height of the precast concrete walls according to the height of the wall opening, so that the height of the precast concrete walls is less than the height of the wall opening in the initial state. S2. Connect multiple precast concrete wall sections sequentially and place them inside the wall opening; S3. Use a drive component to connect multiple drive connectors, causing multiple screws to rotate, thereby moving multiple upper wall components upward until they are in close contact with the top of the wall opening, and then fix the screws. S4. Fill the gaps between the precast concrete wall and the left and right side walls of the wall opening, as well as the gaps between the upper wall and the lower wall, with cement mortar. After curing, seal the operating hole to complete the wall assembly. The prefabricated concrete wall comprises multiple interconnected precast concrete wall sections, each including an upper wall, a lower wall, and a lifting component for controlling the vertical movement of the upper wall. The lifting component includes a threaded sleeve and a screw. A first blind hole is formed at the center of the bottom of the upper wall, and the threaded sleeve is embedded in the first blind hole. The screw is internally threaded into the threaded sleeve. A second blind hole is formed at the center of the top of the lower wall, and the lower end of the screw extends into the second blind hole and is connected to a bearing disposed in the second blind hole. An operating hole is provided on the lower side of the front of the lower wall, which communicates with the second blind hole, and the lower end of the screw is located in the operating hole. The two adjacent precast concrete walls are interlocked, and the sides of the precast concrete walls are provided with interlocking blocks. The interlocking blocks are aligned with the front or back sides of the precast concrete walls. The interlocking blocks of two adjacent precast concrete walls are joined together. No interlocking blocks are provided on the side of the precast concrete wall that contacts the wall opening. The upper wall is provided with a positioning strip at the top and a positioning groove is provided at the top of the wall opening. When the upper wall is raised, the positioning strip is engaged with the positioning groove. The lower wall is provided with a positioning strip at the bottom and a positioning groove is provided at the bottom of the wall opening. During construction, the positioning strip of the lower wall is first inserted into the positioning groove at the bottom of the wall opening. A screw fixing component is provided in the operating hole. The screw fixing component includes a fixing plate and a locking bolt. The upper end of the fixing plate is fixedly connected to the bottom of the bearing. A screw hole is provided on the fixing plate, and the locking bolt is threaded into the screw hole. The locking bolt is perpendicular to the screw. The fixing plate is arc-shaped, and the top of the fixing plate is welded to the bottom of the outer fixing ring of the bearing. Two steel bars are pre-embedded in the lower wall, and the two steel bars are respectively located on both sides of the second blind hole. The upper wall has insertion holes corresponding to the positions of the two steel bars, and the upper ends of the steel bars are inserted into the insertion holes. The precast concrete wall is a foamed concrete wall. The lower end of the screw is provided with a drive connector, which is a hexagonal prism or a gear. The drive component includes two uprights on both sides and a crossbar between the two uprights. Multiple rotating shafts are evenly arranged on the crossbar. The upper end of the rotating shaft is provided with a drive gear, and the lower end is provided with a drive motor. The drive gear meshes with the gear in a one-to-one correspondence.

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