Quick release structure for internal corner mold of prefabricated wall

Abstract

A quick release structure of a prefabricated wall internal corner mold relates to the technical field of prefabricated building construction and comprises a mold body formed by vertically overlapping and splicing a plurality of box bodies, an auxiliary vibration mechanism and a reinforcing frame are arranged in each box body, the reinforcing frame is connected with a threaded rod extending towards one side of each box body, and the threaded rod is connected with the mold body. The threaded rod penetrates through the side wall of the box body and is provided with a pre-embedded sleeve, the pre-embedded sleeve is pre-embedded at the end part of an outer page of a prefabricated wall body forming the prefabricated wall, the threaded rod is in threaded connection with the pre-embedded sleeve, and a threaded hole for connecting an aluminum template of a cast-in-place wall forming the prefabricated wall is formed in the front end of the box body. According to the utility model, the difficulty of removing the formwork for the internal corner of the prefabricated wall can be greatly reduced, the internal corner forming quality is improved, the working efficiency is improved, and meanwhile, the mold body can be repeatedly used.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building construction technology, specifically to a quick-release structure for a prefabricated wall internal corner mold. Background Technology

[0002] like Figure 1 As shown, existing precast walls are typically composed of precast wall panels and cast-in-place walls. Molds are needed at the internal corners, both to aid in corner shaping and to reserve space for later insulation layer installation. Wooden boxes are usually used as molds on construction sites. However, during pouring, the wooden boxes are compressed by the expanding concrete, pressing tightly against the outer edge of the precast wall. Since removing the molds at the internal corners is already difficult, the constraint from the outer edge makes it impossible to remove the wooden boxes from the corners, significantly reducing construction efficiency. Utility Model Content

[0003] This invention discloses a quick-release structure for a precast wall internal corner mold, which aims to solve the problem of the difficulty in removing the mold at the internal corner of the precast wall.

[0004] To achieve the above objectives, the technical solution of this invention is as follows:

[0005] A quick-release structure for a precast wall corner mold includes a mold body composed of multiple stacked boxes. Each box contains an auxiliary vibration mechanism and a reinforcing frame. The reinforcing frame is connected to a threaded rod extending to one side of the box. The threaded rod penetrates the side wall of the box and is fitted with an embedded sleeve. The embedded sleeve is pre-embedded in the outer end of the precast wall forming the precast wall. The threaded rod is screwed to the embedded sleeve. A threaded hole is provided at the front end of the box for connecting to an aluminum template of the cast-in-place wall forming the precast wall.

[0006] Preferably, the box is a cubic structure, and the mold body is formed by splicing three boxes together according to the floor height where the precast wall is located.

[0007] Preferably, the box body is made of metal material, and the inner walls of the upper and lower ends of the box body are respectively provided with reinforcing layers. The auxiliary vibration mechanism includes a slide rod, a counterweight, and a vibration spring. A slide rod is vertically fixed between the opposite corners of the two reinforcing layers. A counterweight is slidably sleeved on the slide rod. The counterweight has a through hole that cooperates with the slide rod. A vibration spring is sleeved on the slide rod body above and below the counterweight. The two ends of the vibration spring are respectively connected to the outer surface of the reinforcing layer and the outer surface of the counterweight. In the natural state, the counterweight is located in the middle of the slide rod.

[0008] Preferably, the reinforcing frame is a rectangular frame, which is welded to the inner surfaces of the four side walls of the box, and a limiting baffle is connected between the middle of the front and rear walls of the rectangular frame.

[0009] Preferably, the limiting baffle has a through hole, the threaded rod extends outward through the through hole and the side wall of the box, and a force-applying plate is welded to the end of the threaded rod located inside the box. The force-applying plate is used in conjunction with the limiting baffle.

[0010] Preferably, a guide tube is welded between the through hole and the side wall of the box body. The through hole and the guide tube have the same inner diameter. The outer end of the guide tube penetrates the outer wall of the box body and is flush with the outer surface of the box body. The threaded rod passes through the guide tube and is in clearance fit with the guide tube.

[0011] Preferably, a limit nut is screwed onto the rod body located on the outside of the box body of the threaded rod, and a through operating hole is provided at the outer end of the threaded rod. The pre-embedded sleeve is pre-embedded at the outer end of the page opposite to the threaded rod.

[0012] The beneficial effects of this novel quick-release structure for prefabricated wall internal corner molds:

[0013] This new type of mold can significantly reduce the difficulty of demolding the inside corner of precast walls, improve the forming quality of the inside corner, and increase work efficiency. At the same time, the mold body can be reused repeatedly. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this invention, the accompanying drawings used in the embodiments are briefly described below, which constitute a part of the specification and are used together with the embodiments of this invention to explain this invention, but do not constitute a limitation on this invention.

[0015] Figure 1 A top-view diagram illustrating the principle behind the difficulty in disassembling existing molds;

[0016] Figure 2 A front view of the quick-release principle of this novel structure;

[0017] Figure 3 A top view schematic diagram of the quick-release principle of this novel structure;

[0018] Figure 4 A top-view cross-sectional structural diagram of the new type of box.

[0019] Figure 5 A schematic diagram showing the structural relationship between the reinforcing layer, sliding rod, counterweight, and vibration spring of this novel invention.

[0020] 1. Mold body; 2. Precast wall; 3. (Outer layer of precast wall); 4. Insulation layer inside the precast wall; 5. Cast-in-place wall; 6. Aluminum formwork; 7. Box body; 71. Threaded hole; 72. Reinforcing layer; 73. Sliding rod; 74. Counterweight; 75. Vibration spring; 76. Reinforcing frame; 77. Limiting baffle; 78. Threaded rod; 79. Limiting nut; 710. Cylindrical counterweight; 711. Force plate; 8. Embedded sleeve; 9. Position of the cast-in-place wall insulation layer to be constructed; 10. Operating hole; 11. Bolt; 12. Sealing structure. Detailed Implementation

[0021] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0022] The following embodiments can be understood as explaining a partial structure of the present invention individually, or as explaining a larger structure of the present invention through a combination of multiple embodiments.

[0023] This novel precast wall internal corner mold quick-release structure, such as Figure 2-4 As shown, the mold body includes multiple boxes 7 stacked and spliced ​​together. The box 7 is equipped with an auxiliary vibration mechanism (which can assist the box to vibrate during demolding) and a reinforcing frame 76. The reinforcing frame 76 is connected to a threaded rod 78 extending to one side of the box 7. The threaded rod 78 passes through the side wall of the box 7 and is equipped with a pre-embedded sleeve 8 (used to assist in the positioning of the box and to assist the threaded rod in pulling the box to demold). The pre-embedded sleeve 8 is pre-embedded at the end of the outer page 3 of the precast wall 2 that constitutes the precast wall. The threaded rod 78 is screwed to the pre-embedded sleeve 8. At the front end of the box 7, there is a threaded hole 71 for connecting the aluminum template 6 of the cast-in-place wall 5 that constitutes the precast wall.

[0024] In this embodiment, as Figure 2-4 As shown, the box 7 has a cubic structure, and the mold body is composed of three boxes 7 assembled according to the floor height where the precast wall is located. The reason for dividing the mold body into three boxes is to reduce the difficulty of demolding.

[0025] In this embodiment, as Figure 2-5As shown, the box body 7 is made of metal material (such as steel plate or aluminum plate). The inner walls of the upper and lower ends of the box body 7 are respectively provided with reinforcing layers 72 (strength is increased by thickening to adapt to hammering or vibration during demolding). The auxiliary vibration mechanism includes a slide rod 73, a counterweight 74 and a vibration spring 75. The slide rod 73 is vertically fixed between the opposite corners of the two reinforcing layers 72. The counterweight 74 is slidably sleeved on the slide rod 73. The counterweight 74 is provided with a through hole that cooperates with the slide rod 73. The vibration spring 75 is sleeved on the slide rod 73 above and below the counterweight 74. The two ends of the vibration spring 75 are respectively connected to the outer surface of the reinforcing layer 72 and the outer surface of the counterweight 74. In the natural state, the counterweight 74 is located in the middle of the slide rod 73.

[0026] In this embodiment, as Figure 2 , 4 As shown, the reinforcing frame 76 is a rectangular frame, which is welded to the inner surfaces of the four side walls of the box body 7. A limiting baffle 77 is connected between the middle of the front and rear walls of the rectangular frame. The limiting baffle 77 has a through hole, and the threaded rod 78 extends outward through the through hole and the side wall of the box body 7. A force-applying plate 711 is also welded to the end of the threaded rod 78 located inside the box body 7. The force-applying plate 711 works in conjunction with the limiting baffle 77, that is, the force-applying plate pulls the limiting baffle, thereby driving the box body to move and achieve demolding.

[0027] In this embodiment, as Figure 2 , 4 As shown, a guide tube (not marked in the figure) is welded between the through hole and the side wall of the box body 7. The through hole and the guide tube have the same inner diameter. The outer end of the guide tube penetrates the outer wall of the box body 7 and is flush with the outer surface of the box body 7. The threaded rod 78 passes through the guide tube and is in clearance fit with the guide tube. The clearance is set to accommodate the vibration of the box body.

[0028] In this embodiment, as Figure 2 , 4 As shown, the threaded rod 78 is also screwed with a limit nut 79 on the rod body outside the box body 7. A through operating hole 10 is provided at the outer end of the threaded rod 78. The pre-embedded sleeve 8 is pre-embedded at the end of the outer page 3 opposite to the threaded rod 78.

[0029] The working principle of this new type:

[0030] like Figure 1 As shown, existing molds (usually made of wood, but some are filled with rock wool) are pushed and moved by the expansion of concrete during construction, causing the mold to be squeezed between the outer layer and the cast-in-place wall. This not only results in poor corner forming, but also makes mold disassembly difficult.

[0031] like Figure 2 ,3 As shown, this new invention first improves the material of the mold by using a metal mold, which significantly increases the mold's strength. Furthermore, the mold body is composed of multiple stacked boxes, further reducing the difficulty of demolding. Based on this, when pouring the cast-in-place wall, the mold is first placed in the preset position, and the head of the threaded rod is initially screwed into the pre-embedded sleeve. The limiting nut is then screwed into position where it fits against the side wall of the box. Then, the aluminum template is tightened into the threaded hole using bolts 11 to fix the box. At this point, there is a certain gap between the side wall of the box and the outer end. Due to the effect of the limiting nut, even if the concrete expands and compresses, the box will not move to the outer side, thus preserving lateral demolding space.

[0032] After the cast-in-place wall is formed, the aluminum formwork is removed. First, a hammer or vibrator is used to tap or vibrate the top of the box. Due to the transmission of vibration, the sliding rod follows the vibration. When the sliding rod vibrates, the counterweight moves up and down along the sliding rod, which in turn drives the vibration spring to repeatedly stretch and contract, increasing the vibration amplitude. The repeated action of the vibration spring causes the counterweight to vibrate the box, thus assisting in demolding the box due to vibration. Alternatively, a rod-shaped tool (such as a reinforcing bar) can be inserted into the operating hole, and the threaded rod can be screwed in, allowing the threaded rod to penetrate deeper into the embedded sleeve. This causes the force plate to pull the limiting baffle outward, thereby moving the box to achieve demolding.

[0033] Through the above improvements, this new invention can not only ensure the quality of the internal corner forming, but also greatly reduce the difficulty of mold disassembly.

Claims

1. A quick-release structure for a precast wall internal corner mold, characterized in that: The mold body is composed of multiple stacked boxes. The box body is equipped with an auxiliary vibration mechanism and a reinforcing frame. The reinforcing frame is connected to a threaded rod extending to one side of the box body. The threaded rod passes through the side wall of the box body and is equipped with a pre-embedded sleeve. The pre-embedded sleeve is pre-embedded in the outer end of the precast wall body that constitutes the precast wall. The threaded rod is screwed to the pre-embedded sleeve. The front end of the box body is provided with a threaded hole for connecting the aluminum template of the cast-in-place wall that constitutes the precast wall.

2. The quick-release structure for a precast wall internal corner mold as described in claim 1, characterized in that: The box is a cubic structure, and the mold body is formed by splicing three boxes together according to the floor height where the precast wall is located.

3. The quick-release structure for a precast wall internal corner mold as described in claim 2, characterized in that: The box body is made of metal, and the inner walls of the upper and lower ends of the box body are respectively provided with reinforcing layers. The auxiliary vibration mechanism includes a slide rod, a counterweight, and a vibration spring. A slide rod is vertically fixed between the opposite corners of the two reinforcing layers. A counterweight is slidably sleeved on the slide rod. The counterweight has a through hole that mates with the slide rod. A vibration spring is sleeved on the slide rod body above and below the counterweight. The two ends of the vibration spring are respectively connected to the outer surface of the reinforcing layer and the outer surface of the counterweight. In the natural state, the counterweight is located in the middle of the slide rod.

4. The quick-release structure for a precast wall internal corner mold as described in claim 3, characterized in that: The reinforcing frame is a rectangular frame, which is welded to the inner surfaces of the four side walls of the box. A limit baffle is connected between the middle of the front and rear walls of the rectangular frame.

5. The quick-release structure for a precast wall internal corner mold as described in claim 4, characterized in that: The limiting baffle has a through hole, and the threaded rod extends outward through the through hole and the side wall of the box. A force-applying plate is also welded to the end of the threaded rod located inside the box. The force-applying plate is used in conjunction with the limiting baffle.

6. The quick-release structure for a precast wall internal corner mold as described in claim 5, characterized in that: A guide tube is welded between the through hole and the side wall of the box. The through hole and the guide tube have the same inner diameter. The outer end of the guide tube penetrates the outer wall of the box and is flush with the outer surface of the box. The threaded rod passes through the guide tube and is clearance-fitted with the guide tube.

7. The quick-release structure for a precast wall internal corner mold as described in claim 6, characterized in that: The threaded rod is located on the outside of the box body and a limit nut is screwed on it. A through operating hole is provided at the outer end of the threaded rod. The pre-embedded sleeve is pre-embedded at the outer end of the page opposite to the threaded rod.

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