Prestressed installation device for crack prevention at decorative gypsum board joints

Abstract

This utility model discloses a prestressed installation device for preventing cracks in the joints of decorative gypsum board, comprising four precast gypsum boards fixedly connected to a supporting wall. Two first limiting grooves are formed on the surface of each precast gypsum board. Limiting strips are slidably connected to the inner cavities of both first limiting grooves. A support plate is welded to the side of each limiting strip opposite to the first limiting groove. Two wide-edge positioning strips are welded to the side of the support plate opposite to the limiting strips, and two narrow-edge positioning strips are welded to the side of the support plate opposite to the limiting strips. Two elastic support members are provided between the two precast gypsum boards. This utility model allows the elastic support members to slide between the wide-edge and narrow-edge positioning strips from top to bottom, thereby ensuring that both gypsum boards receive a connecting force during contraction. This reduces the prestressed load between the two gypsum boards, thus reducing cracks at the joints.

Description

Technical Field

[0001] This utility model belongs to the field of building decoration technology, and in particular relates to a prestressed installation device for preventing cracking of decorative gypsum board joints. Background Technology

[0002] The joints of gypsum board are a weak point in decoration that is prone to cracking. The cracking is mainly caused by changes in indoor temperature and humidity, which cause the material to shrink and eventually crack at the joint. To address this, a prestressed installation device for crack prevention at the joints of decorative gypsum board has been designed. This device leaves a certain space between two gypsum boards and is combined with a supporting structure so that both gypsum boards can be connected by a force when shrinking. This reduces the prestressed load between the two gypsum boards and thus reduces the occurrence of cracks at the joints. Utility Model Content

[0003] The purpose of this utility model is to provide a prestressed installation device for crack prevention at the joints of decorative gypsum boards, which reduces the prestressed load between two gypsum boards, thereby reducing the occurrence of cracks at the joints of the gypsum boards, in order to solve the aforementioned technical problems.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a prestressed installation device for crack prevention of decorative gypsum board joints, which includes four precast gypsum boards fixedly connected to a supporting wall: two first limiting grooves are opened on the surface of the precast gypsum boards, and limiting strips are slidably connected to the inner cavities of the two first limiting grooves. A support plate is welded to the side of the two limiting strips opposite to the first limiting grooves. Two wide positioning strips are welded to the side of the support plate opposite to the limiting strips, and two narrow positioning strips are welded to the side of the support plate opposite to the limiting strips. Two elastic support members are arranged between the two precast gypsum boards, and the left and right sides of the elastic support members are slidably connected between the two wide positioning strips and the narrow positioning strips, respectively.

[0005] Preferably, a second limiting groove is provided on the surface of the precast gypsum board, and a protective plate is slidably connected between the two precast gypsum boards.

[0006] Preferably, the surface of the protective plate is slidably connected to the inner cavity of the second limiting groove, and two abutment strips are welded to the surface of the support plate.

[0007] Preferably, the abutting strip is located between the wide-side positioning strip and the narrow-side positioning strip, and an arc-shaped strip is welded to the opposite side of both the wide-side positioning strip and the narrow-side positioning strip.

[0008] Preferably, the surface of the elastic support member has two arc-shaped grooves, and the surface of the arc-shaped strip is rotatably connected to the inner cavity of the arc-shaped grooves.

[0009] Preferably, the bottom of the support plate is welded with side plates, and the front side of the precast gypsum board has two inclined grooves.

[0010] The beneficial effects of this utility model are:

[0011] 1. This utility model slides the elastic support between the wide and narrow positioning strips from top to bottom, so that the two gypsum boards can be connected by force when shrinking, thereby reducing the load prestress between the two gypsum boards and thus reducing the cracks at the joint of the gypsum boards.

[0012] 2. By setting up a protective plate, this utility model can ensure that the joint filler has a contact surface during subsequent joint filling, or make the joint between two precast gypsum boards more aesthetically pleasing.

[0013] 3. By setting the side plate, this utility model can limit the extreme position of the elastic support sliding, and can prevent the elastic support from slipping between the wide side positioning strip and the narrow side positioning strip. Attached Figure Description

[0014] in:

[0015] Figure 1 This is a front view schematic diagram of one embodiment of the present utility model;

[0016] Figure 2 This is a top view schematic diagram of one embodiment of the present utility model;

[0017] Figure 3 This is one embodiment of the present utility model. Figure 1 A magnified view of point A in the middle;

[0018] Figure 4 This is one embodiment of the present utility model. Figure 2 A magnified view of point B in the middle.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Supporting wall; 2. Precast gypsum board; 3. First limiting groove; 4. Limiting strip; 5. Support plate; 6. Wide-side positioning strip; 7. Narrow-side positioning strip; 8. Elastic support component; 9. Second limiting groove; 10. Protective plate; 11. Abutting strip; 12. Arc strip; 13. Side plate; 14. Inclined groove. Detailed Implementation

[0021] In the following description, embodiments of the decorative gypsum board joint crack prevention prestressed installation device of the present invention will be described with reference to the accompanying drawings. Example 1

[0022] Figure 1-4This invention illustrates a prestressed installation device for preventing cracking at joints of decorative gypsum board, comprising four precast gypsum boards 2 fixedly connected to a supporting wall 1. Two first limiting grooves 3 are formed on the surface of each precast gypsum board 2. Limiting strips 4 are slidably connected to the inner cavities of both first limiting grooves 3. Support plates 5 are welded to the sides of the two limiting strips 4 opposite to the first limiting grooves 3. Two wide-edge positioning strips 6 are welded to the side of the support plate 5 opposite to the limiting strips 4, and two narrow-edge positioning strips 7 are welded to the side of the support plate 5 opposite to the limiting strips 4. Two elastic support members 8 are provided between the two precast gypsum boards 2, with sliding supports on their left and right sides respectively. The precast gypsum board 2 is connected between two wide-side positioning strips 6 and narrow-side positioning strips 7. A second limiting groove 9 is opened on the surface of the precast gypsum board 2. A protective plate 10 is slidably connected between the two precast gypsum boards 2. By setting the protective plate 10, the joint filler can have a contact surface when filling the joint later, or the joint between the two precast gypsum boards 2 can be more beautiful. The surface of the protective plate 10 is slidably connected to the inner cavity of the second limiting groove 9. Two abutting strips 11 are welded to the surface of the support plate 5. The abutting strips 11 are located between the wide-side positioning strips 6 and narrow-side positioning strips 7. An arc-shaped strip 12 is welded to the opposite side of the wide-side positioning strips 6 and narrow-side positioning strips 7. Example 2

[0023] Figure 1-4 This invention illustrates an embodiment of a prestressed installation device for preventing cracking at joints of decorative gypsum board, comprising four precast gypsum boards 2 fixedly connected to a supporting wall 1. Two first limiting grooves 3 are formed on the surface of each precast gypsum board 2. Limiting strips 4 are slidably connected to the inner cavities of both first limiting grooves 3. Support plates 5 are welded to the sides of the two limiting strips 4 opposite to the first limiting grooves 3. Two wide-edge positioning strips 6 are welded to the side of the support plate 5 opposite to the limiting strips 4, and two narrow-edge positioning strips 7 are welded to the side of the support plate 5 opposite to the limiting strips 4. Between two precast gypsum boards 2... Two elastic support members 8 are provided. The left and right sides of the elastic support members 8 are slidably connected between two wide-side positioning strips 6 and narrow-side positioning strips 7, respectively. Two arc-shaped grooves are opened on the surface of the elastic support members 8. The surface of the arc-shaped strip 12 is rotatably connected to the inner cavity of the arc-shaped groove. The bottom of the support plate 5 is welded with a side plate 13. By setting the side plate 13, the extreme position of the sliding of the elastic support member 8 can be limited, and the situation of the elastic support member 8 slipping out between the wide-side positioning strips 6 and narrow-side positioning strips 7 can be avoided. Two inclined grooves 14 are opened on the front side of the precast gypsum board 2.

[0024] Working principle: When using this utility model, the user first opens the first limiting groove 3 and the second limiting groove 9 on the surface of the precast gypsum board 2. Then, the support plate 5 is guided and limited by the limiting strip 4 and the first limiting groove 3, and then slides to connect with the precast gypsum board 2. Next, the elastic support member 8 is pushed towards the narrow side positioning strip 7. Because the elastic support member 8 has its own elasticity, it slides between the wide side positioning strip 6 and the narrow side positioning strip 7. Alternatively, the elastic support member 8 can be slid between the wide side positioning strip 6 and the narrow side positioning strip 7 from top to bottom. Then, the protective plate 10 is slid into the inner cavity of the second limiting groove 9. Then, when filling the joint, the joint filler has a contact surface, so that the two gypsum boards can be connected by force when shrinking. This can reduce the prestress of the load between the two gypsum boards, thereby reducing the occurrence of cracks at the joint of the gypsum boards.

[0025] In summary, this prestressed installation device for preventing cracks at the joints of decorative gypsum boards slides the elastic support 8 between the wide-side positioning strip 6 and the narrow-side positioning strip 7 from top to bottom, thereby ensuring that both gypsum boards can be connected by a force during contraction. This reduces the prestressed load between the two gypsum boards, thus reducing the occurrence of cracks at the joints.

Claims

1. A decorative gypsum board joint crack prevention prestress installation device, characterized in that, The system includes four precast gypsum boards (2) that are fixedly connected to the supporting wall (1): two first limiting grooves (3) are opened on the surface of the precast gypsum board (2), and limiting strips (4) are slidably connected to the inner cavity of the two first limiting grooves (3). Support plates (5) are welded to the side opposite to the first limiting grooves (3) of the two limiting strips (4). Two wide positioning strips (6) are welded to the side opposite to the limiting strips (4) of the support plate (5). Two narrow positioning strips (7) are welded to the side opposite to the limiting strips (4). Two elastic support members (8) are provided between the two precast gypsum boards (2). The left and right sides of the elastic support members (8) are slidably connected between the two wide positioning strips (6) and the narrow positioning strips (7).

2. The decorative gypsum board joint crack prevention prestress mounting device according to claim 1, characterized in that, The surface of the precast gypsum board (2) is provided with a second limiting groove (9), and a protective plate (10) is slidably connected between the two precast gypsum boards (2).

3. The decorative gypsum board joint crack prevention prestress mounting device according to claim 2, characterized in that, The surface of the protective plate (10) is slidably connected to the inner cavity of the second limiting groove (9), and two abutment strips (11) are welded to the surface of the support plate (5).

4. The decorative gypsum board joint crack prevention prestress installation device according to claim 3, characterized in that, The contact strip (11) is located between the wide side positioning strip (6) and the narrow side positioning strip (7), and an arc-shaped strip (12) is welded to the opposite side of the wide side positioning strip (6) and the narrow side positioning strip (7).

5. The decorative gypsum board joint crack prevention prestress mounting device according to claim 4, characterized in that, The surface of the elastic support (8) has two arc-shaped grooves, and the surface of the arc-shaped strip (12) is rotatably connected to the inner cavity of the arc-shaped grooves.

6. The decorative gypsum board joint crack prevention prestress installation device according to claim 5, characterized in that, The bottom of the support plate (5) is welded with a side plate (13), and two inclined grooves (14) are opened on the front side of the precast gypsum board (2).

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