Prefabricated building wall and construction method thereof

Abstract

The application relates to a fabricated building wall and a construction method thereof, which comprises a first wall and a second wall. The second wall is provided with a buffer rod at one end close to the first wall. The buffer rod is sleeved with a reset spring, the reset spring is connected with the second wall, and the end of the reset spring away from the second wall is provided with a buffer sleeve. The buffer sleeve slides in the buffer rod, the sliding direction of the buffer sleeve is the axial direction of the buffer rod, the first wall is provided with a mounting groove for embedding the buffer sleeve. When the first wall collides with the second wall, the buffer sleeve collides with the bottom of the mounting groove, and the reset spring is in a compressed state. The buffer sleeve and the reset spring are arranged. When the second wall approaches the first wall, the buffer sleeve first contacts the bottom of the mounting groove, then the reset spring is compressed, the reset spring absorbs the impact energy in the hoisting process, and the damage of the wall caused by the hard collision is reduced.

Description

Technical Field

[0001] This application relates to the field of walls, and in particular to a prefabricated building wall and its construction method. Background Technology

[0002] Prefabricated buildings refer to buildings where a large amount of on-site work in traditional construction methods is transferred to factories. Building components and accessories (such as floor slabs, wall panels, stairs, balconies, etc.) are processed and manufactured in factories, transported to the construction site, and assembled and installed on-site using reliable connection methods.

[0003] Referring to Chinese invention patent CN115853157A, a prefabricated wall panel is disclosed, comprising several wall panel units that are interlocked end-to-end. Each wall panel unit is provided with an interlocking portion and two connecting protrusions. An interlocking groove is formed between the two connecting protrusions for the interlocking portions of adjacent wall panel units to be inserted. Two fixing plates for clamping the interlocking portions are provided within the interlocking grooves of each wall panel unit. A clamping member passes through the connecting protrusions to press the fixing plates against the interlocking portions. A pouring cavity for concrete pouring is formed between the fixing plates and the connecting protrusions. A shaping mechanism is provided between the fixing plates and the connecting protrusions, and a shaping cavity for concrete pouring is formed inside the shaping mechanism. The clamping member passes through the shaping cavity. The shaping mechanism includes two opposing telescopic folding pieces, a first connecting piece, and a second connecting piece.

[0004] In actual construction, the alignment and installation of adjacent precast walls using hoisting equipment can lead to collisions between the walls during installation, which can easily cause damage and needs to be improved. Summary of the Invention

[0005] To reduce collision damage between walls, this application provides a prefabricated building wall and its construction method.

[0006] This application provides a prefabricated building wall and its construction method, which adopts the following technical solution:

[0007] A prefabricated building wall includes a first wall and a second wall. A buffer rod is provided at one end of the second wall near the first wall. A return spring is sleeved on the buffer rod and connected to the second wall. A buffer sleeve is provided at the end of the return spring away from the second wall. The buffer sleeve slides on the buffer rod in the axial direction of the buffer rod. The elastic force of the return spring restricts the buffer sleeve from moving towards the second wall. The first wall has an installation groove for the buffer sleeve to be inserted. When the first wall abuts against the second wall, the buffer sleeve abuts against the bottom of the installation groove, and the return spring is compressed.

[0008] By adopting the above technical solution, a buffer sleeve and a return spring are set up. When the second wall approaches the first wall, the buffer sleeve first contacts the bottom of the mounting groove, and then compresses the return spring. The return spring absorbs the impact energy during the hoisting process, reducing the possibility of damage to the wall due to hard collisions. Secondly, the elasticity of the return spring keeps the buffer sleeve in the extended state when not in operation, reducing the possibility of the buffer sleeve not being in the initial position due to accidents.

[0009] Optionally, the buffer rod includes a rotating section and a sliding section. The rotating section is located at one end of the sliding section near the second wall. The rotating section is threaded, and the buffer sleeve is threaded to the rotating section. When the return spring is in its normal state, the buffer sleeve is located in the sliding section and has a gap with the rotating section.

[0010] By adopting the above technical solution, the sleeve is located in the sliding section under normal conditions. During the buffering process, the sleeve can slide freely axially without being hindered by the thread. After the buffering is in place, the sleeve can be pushed into the rotating section and enter the threaded engagement state. Furthermore, during the buffering stage, the sleeve moves in the sliding section, and the thread does not participate in the impact force, thus avoiding damage to the thread by the impact force during the buffering process and extending the service life of the device.

[0011] Optionally, the mounting groove opening is provided with a limiting strip, and the buffer sleeve is provided with a snap-fit ​​strip, which is used to abut the limiting strip.

[0012] By adopting the above technical solution, the locking strip and the limiting strip work together to restrict the movement of the buffer sleeve outward from the groove, thereby reducing the impact of the second wall shaking.

[0013] Optionally, the length direction of the limiting strip is vertical, and the length direction of the snap-fit ​​strip is vertical; when the buffer sleeve abuts against the bottom of the mounting groove and rotates, the buffer sleeve drives the snap-fit ​​strip to rotate, at which time the snap-fit ​​strip abuts against the limiting strip and restricts the buffer sleeve from leaving the mounting groove.

[0014] By adopting the above technical solution, a vertically extending limiting strip is set to provide obstruction in the axial direction and allow rotation in the circumferential direction. The movement in the two directions does not interfere with each other. Secondly, if the second wall is subjected to unexpected tension, the contact between the locking strip and the limiting strip can provide resistance, slow down the separation speed, and provide reaction time for construction personnel.

[0015] Optionally, the second wall is provided with a connecting groove, which is located at one end of the second wall near the first wall. When the second wall abuts against the first wall, the connecting groove communicates with the installation groove to form a grouting port.

[0016] By adopting the above technical solution and setting a connecting groove, the grouting port formed by the connection groove and the installation groove provides a clear operation entry for grouting operations, eliminating the need for additional holes in the wall and making the operation more convenient.

[0017] Optionally, the inner wall of the buffer sleeve is provided with a guide groove and a clearance ring groove, and the sliding section is provided with a guide protrusion. The guide protrusion is embedded in the guide groove. When the buffer sleeve moves to the rotating section, the guide protrusion disengages from the guide groove. The clearance ring groove is located at the end of the guide groove away from the second wall, and the clearance ring groove is for the guide protrusion to be embedded in.

[0018] By adopting the above technical solution, the guide ridge is embedded in the guide groove, so that the buffer sleeve can only move axially in the sliding section. Only when the buffer sleeve moves to the rotating section and the guide ridge disengages from the guide groove is the sleeve allowed to rotate.

[0019] Optionally, the buffer sleeve is provided with through holes, which are spaced apart along the circumference of the buffer sleeve, and the through holes are for the grout to flow in.

[0020] By adopting the above technical solution, after the buffer sleeve is temporarily fixed, the through hole on it allows the grout to flow into the inside of the sleeve and the surrounding space, making the sleeve part of the permanent connection node. Secondly, the porous design allows the solidified grout to form multiple pins, effectively dispersing and transmitting the shear force between the walls and improving the overall structure.

[0021] Secondly, this application provides a construction method for prefabricated building walls, employing the following technical solution, including the aforementioned prefabricated building walls, and further including the following steps:

[0022] S1: Substrate preparation: Clean the installation area and repair any uneven areas on the substrate;

[0023] S2: Construct the main structure: Temporarily fix the first wall and move the second wall so that the buffer sleeve is embedded in the installation groove;

[0024] S3: Install the formwork and pour the concrete;

[0025] S4: Remove the mold after the concrete has set.

[0026] By adopting the above technical solutions, a complete construction process has been formed from basic preparation to final formwork removal, which is convenient to operate.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. A buffer sleeve and a return spring are installed. When the second wall approaches the first wall, the buffer sleeve first contacts the bottom of the mounting groove, and then compresses the return spring. The return spring absorbs the impact energy during the hoisting process, reducing the damage to the wall due to hard collisions. Secondly, the elasticity of the return spring keeps the buffer sleeve in the extended state when not in operation, reducing the possibility of the buffer sleeve not being in the initial position due to accidents.

[0029] 2. Under normal conditions, the sleeve is located in the sliding section. During the buffering process, the sleeve can slide freely axially without being hindered by the thread. After the buffering is in place, the sleeve can be pushed into the rotating section and enter the threaded engagement state. Furthermore, during the buffering stage, the sleeve moves in the sliding section, and the thread does not participate in the impact force, thus avoiding damage to the thread by the impact force during the buffering process and extending the service life of the device.

[0030] 3. A vertically extending limiting strip is installed to provide axial obstruction and allow rotation in the circumferential direction. The movement in the two directions does not interfere with each other. Furthermore, if the second wall is subjected to unexpected tension, the contact between the locking strip and the limiting strip can provide resistance, slow down the separation speed, and provide construction personnel with reaction time. Attached Figure Description

[0031] Figure 1 This is a partial schematic diagram of an embodiment.

[0032] Figure 2 This is a partial schematic diagram of the first wall.

[0033] Figure 3 This is a partial schematic diagram of the second wall.

[0034] Figure 4 This is a cross-sectional view of the buffer rod.

[0035] Explanation of reference numerals in the attached drawings: 1. First wall; 2. Second wall; 3. Mounting groove; 4. Limiting strip; 5. Connecting groove; 6. Grouting port; 7. Buffer rod; 71. Rotating section; 72. Sliding section; 8. Return spring; 9. Buffer sleeve; 10. Guide groove; 11. Relief ring groove; 12. Guide protrusion; 13. Snap-fit ​​strip; 14. Through hole. Detailed Implementation

[0036] The present application will be further described in detail below with reference to the accompanying drawings.

[0037] This application discloses a prefabricated building wall. (Refer to...) Figures 1 to 4 The system includes a first wall 1 and a second wall 2. The first wall 1 has an installation groove 3 at one end near the second wall 2. A limit strip 4 is provided at the opening of the installation groove 3 in the vertical direction, and the limit strip 4 protrudes into the installation groove 3.

[0038] The second wall 2 is also provided with a connecting groove 5 at one end near the first wall 1. When the second wall 2 is in place and abuts against the first wall 1, the connecting groove 5 and the mounting groove 3 on the first wall 1 are interconnected to form a grouting port 6. The outer end of the grouting port 6 is connected to the outside, and the inner end is connected to the internal space of the mounting groove 3, for injecting grout into the mounting groove 3.

[0039] A buffer rod 7 is pre-embedded at the bottom of the connecting groove 5, extending outwards horizontally. A return spring 8 and a buffer sleeve 9 are fitted onto the buffer rod 7. One end of the return spring 8 is fixedly connected to the second wall 2, and the other end is connected to the buffer sleeve 9. The buffer sleeve 9 is fitted onto the buffer rod 7 and can slide along the axis of the buffer rod 7. In its natural state, the return spring 8 pushes the buffer sleeve 9 away from the second wall 2, keeping the buffer sleeve 9 in the extended state. In this application, the buffer rod 7 is divided into two sections along the axial direction: the end closer to the second wall 2 is the rotating section 71, and the end away from the second wall 2 is the sliding section 72. The outer wall of the rotating section 71 has external threads, and the inner wall of the buffer sleeve 9 has internal threads that match the external threads of the rotating section 71. (Threads are not shown in this application.)

[0040] The inner wall of the buffer sleeve 9 is provided with a guide groove 10 and a clearance annular groove 11, with the clearance annular groove 11 located on the side of the guide groove 10 away from the second wall 2. The guide groove 10 extends axially along the buffer sleeve 9 and passes through the internal thread of the buffer sleeve 9. The outer wall of the sliding section 72 is provided with a guide protrusion 12, which is embedded in the guide groove 10 and slides along the guide groove 10. During the axial movement of the buffer sleeve 9 along the sliding section 72, the cooperation between the guide protrusion 12 and the guide groove 10 restricts the circumferential rotation of the sleeve, allowing the sleeve to slide axially but not rotate. When the buffer sleeve 9 moves to the rotating section 71, the guide protrusion 12 disengages from the guide groove 10, at which point the sleeve is no longer circumferentially constrained and can rotate freely. The clearance annular groove 11 is located at the end of the guide groove 10 away from the second wall 2. When the buffer sleeve 9 fully enters the rotating section 71, the guide protrusion 12 enters the clearance annular groove 11. The clearance groove 11 provides space for the guide protrusion 12 to rotate circumferentially, so that the sleeve can rotate without disengaging from the guide protrusion 12.

[0041] As the second wall 2 approaches the first wall 1, the buffer sleeve 9 first enters the mounting groove 3 and abuts against the bottom of the groove. Then, as the second wall 2 continues to advance, the buffer sleeve 9 is subjected to a reverse thrust from the bottom of the mounting groove 3, causing it to slide along the buffer rod 7 towards the second wall 2. Simultaneously, the return spring 8 is compressed. During this process, the return spring 8 absorbs impact energy to achieve buffering. Once the second wall 2 is in place, the return spring 8 is in a compressed state.

[0042] The outer wall of the buffer sleeve 9 is provided with a snap-fit ​​strip 13, which also extends vertically. After the second wall 2 is in place and the buffer sleeve 9 abuts against the bottom of the mounting groove 3, the second wall 2 continues to move, causing the buffer sleeve 9 to rotate. When the first wall 1 and the second wall 2 are in contact, the limiting strip 4 abuts against the snap-fit ​​strip 13 and restricts the buffer sleeve 9 from disengaging from the mounting groove 3.

[0043] The buffer sleeve 9 has through holes 14 on its wall, which are spaced apart circumferentially along the sleeve. In this application, four through holes 14 are evenly distributed circumferentially. During grouting, the grout enters the mounting groove 3 from the grouting port 6 and flows into the sleeve and the gap between the sleeve and the wall of the mounting groove 3 through the through holes 14 on the buffer sleeve 9. After the grout solidifies, the buffer sleeve 9, the buffer rod 7, and the wall of the mounting groove 3 are solidified into one, forming a permanent connection node.

[0044] The implementation principle of a prefabricated building wall in this application embodiment is as follows: In actual construction, the second wall 2 is moved toward the first wall 1, the buffer sleeve 9 abuts against the bottom of the mounting groove 3 and slides relative to the buffer rod 7 to the rotating section 71, and the thread and the return spring 8 work together to achieve a buffering effect.

[0045] A construction method for the prefabricated building wall described above further includes the following steps.

[0046] S1: Substrate Preparation: Clean debris, dust, and oil stains from the installation area of ​​the first wall 1 to ensure a clean substrate surface. Repair and level any defects on the substrate surface, such as honeycomb, pitting, unevenness, etc., to ensure a smooth and solid installation surface for the first wall 1;

[0047] S2: Construct the main structure: Hoist the first wall 1 to the design position and temporarily fix it, adjusting its verticality and position to meet the design requirements. Hoist the second wall 2 to the vicinity of the installation position using hoisting equipment, slowly move and lower the second wall 2, aligning the pre-embedded buffer sleeve 9 on the second wall 2 with the installation groove 3 of the first wall 1, and gradually embed it into the installation groove 3;

[0048] S3: Install the formwork. Install the formwork at the designated locations according to the construction drawings. The formwork should be installed firmly and tightly to prevent bulging and grout leakage during pouring. After the formwork has passed inspection, proceed with concrete pouring. Pouring should be continuous.

[0049] S4: Remove the mold after the concrete has set.

[0050] The implementation principle of a construction method for prefabricated building walls in this application embodiment is as follows: This construction method is convenient to operate and reduces collision damage between the first wall 1 and the second wall 2.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0052] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 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 invention according to the specific circumstances.

[0053] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A prefabricated building wall, characterized in that: The system includes a first wall (1) and a second wall (2). A buffer rod (7) is provided at one end of the second wall (2) near the first wall (1). A return spring (8) is sleeved on the buffer rod (7). The return spring (8) is connected to the second wall (2). A buffer sleeve (9) is provided at one end of the return spring (8) away from the second wall (2). The buffer sleeve (9) slides on the buffer rod (7). The sliding direction of the buffer sleeve (9) is the axial direction of the buffer rod (7). The elastic force of the return spring (8) restricts the buffer sleeve (9) from moving towards the second wall (2). The first wall (1) is provided with an installation groove (3), which is for the buffer sleeve (9) to be inserted; when the first wall (1) abuts against the second wall (2), the buffer sleeve (9) abuts against the bottom of the installation groove (3), and the return spring (8) is in a compressed state. The buffer rod (7) includes a rotating section (71) and a sliding section (72). The rotating section (71) is located at one end of the sliding section (72) near the second wall (2). The rotating section (71) is threaded. The buffer sleeve (9) is threaded to the rotating section (71). When the return spring (8) is in the normal state, the buffer sleeve (9) is located in the sliding section (72) and has a gap with the rotating section (71). The mounting groove (3) is provided with a limiting strip (4), and the buffer sleeve (9) is provided with a snap-fit ​​strip (13), which is used to abut the limiting strip (4); The length direction of the limiting strip (4) is vertical, and the length direction of the snap-fit ​​strip (13) is vertical; when the buffer sleeve (9) abuts against the bottom of the mounting groove (3) and rotates, the buffer sleeve (9) drives the snap-fit ​​strip (13) to rotate. At this time, the snap-fit ​​strip (13) abuts against the limiting strip (4) and restricts the buffer sleeve (9) from leaving the mounting groove (3); The inner wall of the buffer sleeve (9) is provided with a guide groove (10) and a clearance ring groove (11). The sliding section (72) is provided with a guide protrusion (12). The guide protrusion (12) is embedded in the guide groove (10). When the buffer sleeve (9) moves to the rotating section (71), the guide protrusion (12) disengages from the guide groove (10). The clearance ring groove (11) is located at the end of the guide groove (10) away from the second wall (2). The clearance ring groove (11) is for the guide protrusion (12) to be embedded.

2. The prefabricated building wall according to claim 1, characterized in that: The second wall (2) is provided with a connecting groove (5), which is located at one end of the second wall (2) near the first wall (1). When the second wall (2) abuts against the first wall (1), the connecting groove (5) communicates with the installation groove (3) to form a grouting port (6).

3. The prefabricated building wall according to claim 1, characterized in that: The buffer sleeve (9) is provided with through holes (14), which are distributed circumferentially along the buffer sleeve (9) and are used for grouting slurry to flow in.

4. A construction method for prefabricated building walls according to any one of claims 1-3, characterized in that: It also includes the following steps: S1: Substrate preparation: Clean the installation area and repair any uneven areas on the substrate; S2: Build the main structure: temporarily fix the first wall (1) and move the second wall (2) so that the buffer sleeve (9) is embedded in the mounting groove (3); S3: Install the formwork and pour the concrete; S4: Remove the mold after the concrete has set.

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