Prefabricated strip-shaped wallboard pre-pressure applying device

Abstract

The utility model discloses an assembly type strip-shaped wallboard pre-pressure applying device which comprises a bottom support, a plurality of strip-shaped wallboards are sequentially arranged above the bottom support in the same straight line direction, the strip-shaped wallboards are spliced to form a partition wall, the vertical side edge of the partition wall is further provided with a lateral pre-pressing assembly, and the lateral pre-pressing assembly is connected with the bottom support. The lateral pre-pressing assembly comprises a lateral support and an elastic pre-pressing piece, the lateral support is close to the vertical side edge of the partition wall, the elastic pre-pressing piece is arranged between the vertical side edge of the partition wall and the lateral support, the elastic pre-pressing piece comprises a belleville spring and a spring pre-pressing piece, the spring pre-pressing piece comprises two movable parts, the belleville spring is arranged between the two movable parts, and the belleville spring is arranged between the two movable parts. And the two movable parts are respectively contacted with the vertical side edge and the lateral support of the partition wall. The utility model has the remarkable effects that the belleville spring can provide larger pre-pressure with smaller size, so that the requirement of the partition wall on the pre-pressure is met, more space is prevented from being occupied on the vertical side edge of the partition wall, and the sound insulation and heat preservation properties of the partition wall are favorably improved.

Description

Technical Field

[0001] This utility model relates to the field of building engineering, specifically to a prefabricated building system. Background Technology

[0002] Prefabricated strip wall panels are wall components made of precast concrete or other materials, which are assembled horizontally on site to form partition walls or other wall structures. In practical applications, prefabricated strip wall panels commonly suffer from wall cracking, primarily manifested as brittle fracture at the joints; this can lead to a chain reaction of problems, including decreased wall stability, moisture leakage, and damage to building materials.

[0003] Currently, conventional treatment measures often use crack-resistant mortar combined with fiberglass mesh to reinforce the joints. However, this process has significant limitations: on the one hand, crack-resistant mortar, as a rigid material, is difficult to adapt to the stress deformation generated during the use of buildings, and secondary cracking is still likely to occur at the joints; on the other hand, the construction process requires that the joints must be completely filled, but in actual operation, there are often problems such as incomplete filling and uneven material distribution, which greatly reduces the crack prevention effect.

[0004] To improve the safety and address the cracking issue in prefabricated strip wall panels, the applicant proposed a prestressed prefabricated strip wall panel system (Chinese Patent Application Publication No.: CN118639780A). This system provides appropriate prestress to the assembled wall by installing prestressed spring devices on one or both sides of the wall formed by the strip wall panels. This allows for proper stress compensation during shrinkage and deformation in later use, thus preventing cracking. In this system, helical springs are primarily used to provide lateral prestress to the strip wall panel system. Based on the commonly used specifications and material properties of prefabricated strip wall panels in the construction engineering field, the applied preload needs to reach approximately 100kN, which common cylindrical helical springs cannot meet. Furthermore, cylindrical helical springs have relatively large geometric dimensions and occupy a significant amount of space, which is detrimental to improving the sound insulation and thermal insulation performance of the vertical sides of the strip wall panels. Utility Model Content

[0005] This utility model provides a disc spring preloading device for prefabricated wall panel systems, and the main technical solution adopted is as follows:

[0006] A prefabricated strip wall panel pre-compression device includes a bottom support. Multiple strip wall panels are arranged sequentially along the same straight line above the bottom support. The strip wall panels are vertically positioned, with their lower edges resting on the bottom support. The multiple strip wall panels are spliced ​​together to form a partition wall. A lateral pre-compression component is also configured on the vertical side of the partition wall. The lateral pre-compression component includes a lateral support and an elastic pre-compression member. The lateral support is relatively fixed to the bottom support and is close to the vertical side of the partition wall. The elastic pre-compression member is arranged between the vertical side of the partition wall and the lateral support, pressing against the vertical side of the partition wall. The key feature is that the elastic pre-compression member includes a disc spring and a spring pre-compression member. The spring pre-compression member includes two movable parts, with the disc spring positioned between the two movable parts. The two movable parts respectively contact the vertical side of the partition wall and the lateral support.

[0007] In the above scheme, disc springs are used to provide lateral preload to the partition wall. Compared with coil springs, disc springs can provide greater preload with a smaller size, which not only meets the preload requirements of the partition wall, but also avoids occupying more space on the vertical sides of the partition wall, thus improving the sound insulation and thermal insulation performance of the partition wall. The two movable parts facilitate the stacking and assembly of disc springs. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the pre-pressure application device for the prefabricated strip wall panel of this utility model;

[0009] Figure 2 This is a schematic diagram showing the distribution of the lower constraint groove on the bottom support 1;

[0010] Figure 3 This is a three-dimensional structural schematic diagram of the elastic preload component 42;

[0011] Figure 4 This is a schematic cross-sectional view of the elastic preload component 42. Detailed Implementation

[0012] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0013] like Figure 1 , 2As shown in Figures 3 and 4, a pre-stressing device for prefabricated strip wall panels includes at least a bottom support 1, which can be a floor, a foundation, or a ground beam. Multiple strip wall panels 3 are arranged sequentially along the same straight direction above the bottom support 1. The strip wall panels 3 are strip-shaped, with their length direction vertically aligned. The lower edges of the strip wall panels 3 are erected on the bottom support 1, and the strip wall panels 3 are sequentially spliced ​​together in their width direction. Multiple strip wall panels 3 are spliced ​​together to form a partition wall, with mortar filling the spaces between adjacent left and right strip wall panels 3.

[0014] The vertical side of the partition wall is also provided with a lateral pre-compression assembly 4. The lateral pre-compression assembly 4 includes a lateral support 41 and an elastic pre-compression member 42. The lateral support 41 is fixedly configured relative to the bottom support 1. The lateral support 41 is close to the vertical side of the partition wall. The elastic pre-compression member 42 is arranged between the vertical side of the partition wall and the lateral support 41. The elastic pre-compression member 42 presses against the vertical side of the partition wall. At least one vertical side of the partition wall is provided with a lateral pre-compression assembly 4. When the lateral pre-compression assembly 4 is provided on one vertical side of the partition wall, the lateral pre-compression assembly 4 applies pre-compression force from one side of the partition wall. When the lateral pre-compression assembly 4 is provided on both vertical sides of the partition wall, the lateral pre-compression assembly 4 applies pre-compression force from both sides of the partition wall.

[0015] The number of elastic preload members 42 needs to be determined according to the designed preload. Generally, the number of elastic preload members 42 is at least two. Multiple elastic preload members 42 are vertically distributed between the vertical side of the partition wall and the lateral support 41.

[0016] A specific structure of an elastic pre-compression component 42 is as follows: the elastic pre-compression component 42 includes a disc spring 421 and a spring pre-compression component 422. The spring pre-compression component 422 includes two movable parts, and the disc spring 421 is disposed between the two movable parts. The two movable parts respectively contact the vertical side of the partition wall and the lateral support 41. The two movable parts provide a basis for the pre-compression of the disc spring 421. Compared with a coil spring, the disc spring 421 can provide sufficient pre-compression within a shorter dimensional range, reducing the distance between the vertical side of the partition wall and the lateral support 41, which is beneficial to improving the sound insulation and thermal insulation performance of the partition wall.

[0017] To facilitate pre-compression of the disc spring 421, a spacing adjustment part is connected between the two movable parts. This spacing adjustment part acts on the two movable parts, causing them to move closer or further apart. When the two movable parts move closer together, the disc spring 421 is further compressed to facilitate its placement between the vertical side of the partition wall and the lateral support 41. When the two movable parts move further apart, the disc spring 421 is released to the required pre-compression level.

[0018] Specifically, one implementation of the movable part is as follows: the movable part includes a stop plate 4221 and a guide cylinder 4222, one end of the guide cylinder 4222 being fixed to either side of the stop plate 4221; the stop plates 4221 of the two movable parts are facing each other and arranged parallel to each other, the center lines of the guide cylinders 4222 of the two movable parts coincide, the guide cylinders 4222 of the two movable parts face each other and are movably nested, forming a spring cavity after the two guide cylinders 4222 are nested, and a disc spring 421 is arranged in the spring cavity, the disc spring 421 contacting and abutting against the stop plates 4221 of the two movable parts respectively, and the disc spring 421 pushing the stop plates 4221 of the two movable parts outward respectively. After the guide cylinders 4222 of the two movable parts face each other and are movably nested, they form a spring telescopic guide mechanism, thereby constraining the disc spring 421 to extend and retract linearly along the direction of the center line; at the same time, it provides constraint and accommodating space for the disc spring 421.

[0019] The aforementioned spacing adjustment part includes an adjustment bolt 4223, which passes through the abutment plates 4221 of the two movable parts. A positioning nut 4224 is also disposed at the free end of the adjustment bolt 4223. The abutment plates 4221 of the two movable parts are located between the head of the adjustment bolt 4223 and the positioning nut 4224. The positioning nut 4224 rotates and moves forward and backward on the threaded part of the adjustment bolt 4223. The abutment plates 4221 of the two movable parts move closer or further away as the positioning nut 4224 moves forward and backward.

[0020] During the initial installation, the distance between the abutment plates 4221 of the two movable parts is adjusted to a relatively small distance so that the elastic preload 42 can be placed between the vertical side of the partition wall and the lateral support 41, and the disc spring 421 is further compressed at the same time. Then, the positioning nut 4224 is rotated back so that the disc spring 421 pushes outward to contact, abut, and press the abutment plates 4221 of the two movable parts against the target position (the vertical side of the partition wall and the lateral support 41). At this time, the disc spring 421 is still in a certain compressed state. At this time, the adjusting bolt 4223 can be removed or retained.

[0021] Preferably, there are at least three spacing adjustment parts to form a relatively stable spacing adjustment system. The spacing adjustment parts are distributed at the edge of the abutment plate 4221. For ease of installation, the elastic preload member 42 can be connected to the lateral support 41. Specifically, one abutment plate 4221 of the movable part is connected to the lateral support 41, and the other abutment plate 4221 of the movable part abuts against the vertical side of the partition wall.

[0022] A basic structure for maintaining the stability of the bottom of the strip wall panel 3 is as follows: the bottom support 1 is provided with a lower constraint groove, which is arranged along the splicing direction of the plurality of strip wall panels 3, the opening of the lower constraint groove faces upward, and at least a portion of the lower edge of the strip wall panel 3 falls within the lower constraint groove.

[0023] To ensure the stability of the upper part of the strip wall panel 3, a top support 2 is also provided. The top support 2 is located directly above the bottom support 1, and multiple strip wall panels 3 are arranged between the bottom support 1 and the top support 2. The top support 2 can be a floor slab or a top beam.

[0024] A basic structure for maintaining the stability of the top of the strip wall panel 3 is as follows: the top support 2 is provided with an upper constraint groove, which is arranged along the splicing direction of the plurality of strip wall panels 3, the opening of the upper constraint groove faces downward, and at least a portion of the upper edge of the strip wall panel 3 falls within the upper constraint groove.

[0025] The lateral support 41 can be a wall or a column.

[0026] In practical applications, when the partition wall is subjected to horizontal loads (such as earthquakes or severe windstorms), the strip wall panel 3 is prone to breakage and collapse under the influence of these loads. To ensure that the strip wall panel 3 continues to receive horizontal preload when the partition wall is subjected to horizontal loads, the lateral support 41 is preferably a column. The top of the lateral support 41 is hinged to the top support 2 via a hinge seat, and the bottom of the lateral support 41 is hinged to the bottom support 1 via a hinge seat. Since both the upper and lower ends of the lateral support 41 are hinged, it can rotate appropriately with the direction of the horizontal load on the partition wall, maintaining the support / resistance of the disc spring 421 and ensuring that the strip wall panel 3 is continuously constrained. If both the upper and lower ends of the lateral support 41 are fixed, it is prone to deformation or breakage when the partition wall is subjected to horizontal loads, causing the support / resistance of the disc spring 421 to disappear, and the strip wall panel 3 is prone to losing its constraint and becoming loose and collapsing.

[0027] Beneficial effects: The present invention uses disc springs to provide lateral preload to the partition wall. Compared with helical springs, disc springs can provide greater preload with a smaller size. This not only meets the preload requirements of the partition wall, but also avoids occupying more space on the vertical side of the partition wall, which helps to improve the sound insulation and heat preservation performance of the partition wall.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A prefabricated strip wall panel pre-pressure application device, comprising a bottom support (1), above which a plurality of strip wall panels (3) are arranged sequentially along the same straight direction, the strip wall panels (3) being vertically arranged, the lower edge of the strip wall panels (3) being erected on the bottom support (1), the plurality of strip wall panels (3) being spliced ​​together to form a partition wall, the vertical side of the partition wall also being provided with a lateral pre-pressure component (4), the lateral pre-pressure component (4) comprising a lateral support (41) and an elastic pre-pressure member (42), the lateral support (41) being relatively fixedly arranged with the bottom support (1), the lateral support (41) being close to the vertical side of the partition wall, the elastic pre-pressure member (42) being arranged between the vertical side of the partition wall and the lateral support (41), the elastic pre-pressure member (42) pressing the vertical side of the partition wall, characterized in that: The elastic preload member (42) includes a disc spring (421) and a spring preload member (422). The spring preload member (422) includes two movable parts. The disc spring (421) is disposed between the two movable parts. The two movable parts respectively contact the vertical side of the partition wall and the lateral support (41).

2. The pre-stressing device for prefabricated strip wall panels according to claim 1, characterized in that: The movable part includes a backing plate (4221) and a guide cylinder (4222), one end of which is fixed to either side of the backing plate (4221); The abutment plates (4221) of the two movable parts are facing each other and arranged in parallel. The center lines of the guide cylinders (4222) of the two movable parts coincide. The guide cylinders (4222) of the two movable parts face each other and are nested in a movable manner. After the guide cylinders (4222) of the two movable parts are nested, a spring cavity is formed. The disc spring (421) is arranged in the spring cavity. The disc spring (421) pushes the abutment plates (4221) of the two movable parts outward respectively.

3. The pre-stressing device for prefabricated strip wall panels according to claim 2, characterized in that: A spacing adjustment part is connected between the two movable parts, and the spacing adjustment part acts on the two movable parts to make them move closer or further apart.

4. The pre-stressing device for prefabricated strip wall panels according to claim 3, characterized in that: The spacing adjustment part includes an adjustment bolt (4223), which passes through the abutment plates (4221) of the two movable parts. A positioning nut (4224) is also provided at the free end of the adjustment bolt (4223). The positioning nut (4224) rotates and moves back and forth on the thread of the adjustment bolt (4223). The abutment plates (4221) of the two movable parts are located between the head of the adjustment bolt (4223) and the positioning nut (4224).

5. The pre-stressing device for prefabricated strip wall panels according to claim 1, 2, 3 or 4, characterized in that: Multiple elastic preload members (42) are vertically distributed between the vertical side of the partition wall and the lateral support (41).

6. The pre-stressing device for prefabricated strip wall panels according to claim 2, 3 or 4, characterized in that: One of the movable parts has abutment plate (4221) connected to the lateral support (41), and the other movable part has abutment plate (4221) abutting against the vertical side of the partition wall.

7. The pre-stressing device for prefabricated strip wall panels according to claim 1, 2, 3 or 4, characterized in that: The bottom support (1) is provided with a lower constraint groove, which is arranged along the splicing direction of the plurality of strip wall panels (3). The opening of the lower constraint groove faces upward, and at least a portion of the lower edge of the strip wall panel (3) falls within the lower constraint groove.

8. The pre-stressing device for prefabricated strip wall panels according to claim 1, 2, 3 or 4, characterized in that: It also includes a top support (2) located directly above the bottom support (1), and a plurality of the strip wall panels (3) are arranged between the bottom support (1) and the top support (2).

9. The pre-stressing device for prefabricated strip wall panels according to claim 8, characterized in that: The top support (2) is provided with an upper constraint groove, which is arranged along the splicing direction of the plurality of strip wall panels (3). The opening of the upper constraint groove faces downward, and at least a portion of the upper edge of the strip wall panel (3) falls within the upper constraint groove.

10. The pre-stressing device for prefabricated strip wall panels according to claim 8, characterized in that: The top of the lateral support (41) is hinged to the top support (2), and the bottom of the lateral support (41) is hinged to the bottom support (1).

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