Exhaust hole structure of self-compacting concrete formwork

Abstract

The utility model discloses a self-compacting concrete formwork exhaust hole structure, and relates to the field of concrete formworks, the self-compacting concrete formwork exhaust hole structure comprises a concrete formwork, a plurality of exhaust holes are formed in the concrete formwork, PVC pipes are arranged in the exhaust holes, replacement mechanisms are arranged between the exhaust holes and the PVC pipes, and blocking mechanisms are arranged on the exhaust holes. Bubbles are directly discharged from the PVC pipes in the exhaust holes in the concrete formwork, when concrete overflows from the PVC pipes and after the concrete formwork is formed, the concrete formwork is taken down, when the concrete overflowing from the exhaust holes hardens in the PVC pipes and blocks the PVC pipes, connection between the PVC pipes and the concrete formwork is directly removed through the replacement mechanism, and then a section of new PVC pipe is replaced. Therefore, the possibility that when the exhaust holes in the concrete formwork exhaust air, concrete overflows, exhausts and hardens, and normal exhaust of the exhaust holes in the concrete formwork is affected can be reduced.

Description

Technical Field

[0001] The present application relates to the field of concrete formwork, and in particular to a vent hole structure of a self-compacting concrete formwork. Background Art

[0002] Self-compacting concrete, also known as high-flow concrete, refers to a concrete mixture that relies mainly on its own weight and does not require vibration to fill the mold and wrap the steel bars. It is a high-performance concrete. Compared with ordinary concrete of the same strength grade, the aggregate content in self-compacting concrete is reduced, but it still accounts for about 50% to 65% of its total volume. It is an important component and has a significant impact on the fluidity of the mixture and the mechanical properties and durability after hardening.

[0003] When using self-compacting concrete to produce modular concrete, the self-compacting concrete is generally poured directly into the corresponding concrete mold. In order to ensure the flatness of the upper surface of the concrete module, a concrete template is covered on the concrete mold. The concrete template is covered on the concrete, and then the concrete in the template is removed after the concrete is formed.

[0004] When pouring self-compacting concrete, air will enter the self-compacting concrete. During the hardening process of the self-compacting concrete, the bubbles in the self-compacting concrete will slowly rise. In order to reduce the obstruction of the bubbles from being discharged by the concrete formwork, resulting in unevenness on the upper surface of the concrete, exhaust holes are generally opened on the concrete formwork for gas discharge. However, when the concrete formwork is placed on the concrete, the concrete formwork presses down on the concrete, and the concrete may overflow from the exhaust holes. Some concrete may stay in the exhaust holes and harden, resulting in the possibility that the exhaust holes may not be able to vent normally when the concrete formwork is used next time. Utility Model Content

[0005] The purpose of the present application is to solve the problem mentioned in the above background technology that vent holes are generally opened on the concrete formwork for exhaust of gas, but when the concrete formwork is placed on the concrete, the concrete formwork presses down on the concrete, and the concrete may overflow from the vent holes, and some concrete may stay in the vent holes and harden, resulting in the concrete formwork being unable to exhaust gas normally when it is used next time. The present application provides a vent hole structure for a self-compacting concrete formwork.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0007] A self-compacting concrete formwork exhaust hole structure comprises a concrete formwork, wherein a plurality of exhaust holes are opened on the concrete formwork, PVC pipes are arranged in the exhaust holes, a replacement mechanism is arranged between the exhaust holes and the PVC pipes, and a blocking mechanism is arranged on the exhaust holes.

[0008] By adopting the above technical solution, the PVC pipe is fixed on the concrete formwork by using a replacement mechanism, and the bubbles are directly discharged from the PVC pipe in the exhaust hole on the concrete formwork. When the concrete overflowing from the exhaust hole hardens in the PVC pipe and blocks the PVC pipe, the connection between the PVC pipe and the concrete formwork is directly released by using the replacement mechanism, and the PVC pipe that has been hardened by the concrete is discarded. Then, a new PVC pipe is replaced and fixed by using the replacement mechanism, thereby reducing the possibility that the concrete overflows into the exhaust hole and hardens during exhaust of the concrete formwork, thereby affecting the normal exhaust of the exhaust hole of the concrete formwork.

[0009] Furthermore, the replacement mechanism includes two clamping blocks symmetrically arranged on the concrete template, a movable groove is opened on the concrete template, the clamping block is located in the movable groove, an arc groove is opened on the clamping block, and a pushing component is arranged between the clamping block and the concrete template.

[0010] By adopting the above technical solution, when concrete overflows into the PVC pipe and hardens, a new PVC pipe is cut and placed into the exhaust hole so that the PVC pipe is flush with the concrete template. Then, the pushing assembly is used to move the clamping block closer to the PVC pipe. The arc grooves on the two clamping blocks contact the PVC pipe, so that the PVC pipe is fixed. When the concrete template is used next time, the exhaust hole can be used normally to exhaust the air. Therefore, after the concrete enters the PVC pipe and hardens, the PVC pipe can be easily replaced, which reduces the possibility that the concrete enters the exhaust hole and hardens, affecting the normal exhaust of the exhaust hole.

[0011] Furthermore, the pushing assembly includes a threaded rod arranged on the concrete formwork, a sliding groove is opened on the concrete formwork, the sliding groove is connected to the movable groove, the threaded rod passes through the sliding groove and is rotatably connected to the concrete formwork, a sliding block is arranged in the sliding groove, the sliding block is slidably connected to the concrete formwork, and the threaded rod passes through the sliding block and is threadedly connected to the sliding block.

[0012] By adopting the above technical solution, the bolt rod is rotated, and the sliding block is driven to rotate by the threaded rod, so that the sliding block pushes the clamping block, and the clamping block clamps the PVC pipe, thereby facilitating the fixation of the PVC pipe and the replacement of the PVC pipe.

[0013] Furthermore, a pushing block is provided at one end of the sliding block facing the clamping block, the pushing block is fixedly connected to the clamping block, both the pushing block and the sliding block are provided with inclined surfaces corresponding to each other, and the inclined surface of the sliding block is slidably connected to the inclined surface of the pushing block.

[0014] By adopting the above technical solution, the inclined surface on the sliding block and the inclined surface on the pushing block are allowed to contact and slide with each other, and the pushing block drives the clamping block to move, so that the two clamping blocks can clamp the PVC pipe conveniently.

[0015] Furthermore, evenly distributed anti-slip grooves are provided on the inner wall of the arc-shaped groove of the clamping block.

[0016] By adopting the above technical solution, when the arc grooves of the two clamping blocks clamp the PVC pipe, the anti-slip grooves on the inner wall of the arc grooves abut against the PVC pipe, thereby reducing the possibility of loose clamping of the PVC pipe due to the smooth surface of the PVC pipe.

[0017] Furthermore, a sealing rubber ring is provided on the inner wall of the exhaust hole, and the sealing rubber ring is fixedly connected to the concrete formwork.

[0018] By adopting the above technical solution, when the PVC pipe is inserted into the exhaust hole, the outer wall of the PVC pipe contacts the sealing rubber ring, thereby reducing the possibility of concrete entering between the inner wall of the exhaust hole and the PVC pipe, and reducing the possibility of concrete entering the gap and hardening.

[0019] Furthermore, the blocking mechanism includes a collection box arranged on the concrete formwork, a positioning tube is fixed to the bottom of the collection box, the positioning tube is connected to the collection box, the positioning tube corresponds to the PVC tube, and a fixing component is arranged between the collection box and the concrete formwork.

[0020] By adopting the above technical solution, when concrete overflows from the PVC pipe, the overflowed concrete directly enters the collecting box from the positioning pipe, so that when concrete overflows from the PVC pipe, the overflowed concrete can be collected by the collecting box, reducing the possibility of the overflowed concrete entering the moving groove and hindering the movement of the clamping block.

[0021] Furthermore, the fixing assembly includes two support blocks symmetrically arranged on both sides of the collection box, the support blocks are threadedly connected with fixing bolts, and the fixing bolts are slidably connected with fixing buckles.

[0022] By adopting the above technical solution, the positioning tube on the collection box is inserted into the PVC tube, the positioning tube is used to limit the position of the collection box, and then the fixing buckle is slid on the fixing bolt to move the fixing buckle to the top of the collection box. Then the fixing bolt is turned to make the bolt head on the fixing bolt contact the fixing buckle, and the fixing buckle contact the collection box, thereby facilitating the fixation and removal of the collection box and reducing the possibility that the collection box hinders the replacement of the PVC tube.

[0023] In summary, the present application includes at least one of the following beneficial effects:

[0024] 1. The present application uses a pushing assembly to drive a clamping block when concrete overflows into a PVC pipe and hardens, so that the clamping block moves away from the PVC pipe in a moving groove. After the PVC pipe lacks the clamping of two clamping blocks, the PVC pipe is directly taken out from the exhaust hole, and then a new PVC pipe is cut and placed into the exhaust hole so that the PVC pipe is flush with the concrete template. Then, the pushing assembly is used to move the clamping block closer to the PVC pipe, and the arc grooves on the two clamping blocks contact the PVC pipe, so that the PVC pipe is fixed. This achieves the purpose of being able to easily replace the PVC pipe after concrete enters the PVC pipe and hardens, thereby reducing the possibility of concrete entering the exhaust hole and hardening, which affects the normal exhaust of the exhaust hole.

[0025] 2. In the present application, after the PVC pipe is fixed on the concrete formwork, the collecting box is taken out, and the positioning tube on the collecting box is inserted into the PVC pipe, so that the positioning tube limits the position of the collecting box, and then the fixing buckle is slid on the fixing bolt to move the fixing buckle to the top of the collecting box, and then the fixing bolt is turned to make the bolt head on the fixing bolt contact the fixing buckle, and the fixing buckle contact the collecting box, and the collecting box contact the concrete formwork tightly. When concrete overflows from the PVC pipe, the overflowed concrete directly enters the collecting box from the positioning tube, thereby achieving the purpose of being able to collect the overflowed concrete from the PVC pipe by the collecting box when the concrete overflows from the PVC pipe, thereby reducing the possibility of the overflowed concrete entering the moving groove and hindering the movement of the clamping block. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the concrete formwork in this application;

[0027] Figure 2 is the first cross-sectional view of the replacement structure in this application;

[0028] Figure 3 It is the second cross-sectional view of the replacement mechanism in this application.

[0029] Description of reference numerals:

[0030] 1. Concrete formwork; 2. Exhaust hole; 3. PVC pipe; 4. Replacement mechanism; 41. Clamping block; 42. Arc groove; 43. Moving groove; 44. Pushing assembly; 441. Threaded rod; 442. Sliding groove; 443. Sliding block; 444. Pushing block; 45. Sealing rubber ring; 5. Blocking mechanism; 51. Collecting box; 52. Positioning tube; 53. Fixing assembly; 531. Fixing buckle; 532. Support block; 533. Fixing bolt. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1 —3 Provide further details of this application.

[0032] The embodiment of the present application discloses a self-compacting concrete formwork exhaust hole structure.

[0033] Reference Figure 1 , Figure 2 and Figure 3 A self-compacting concrete formwork exhaust hole 2 structure includes a concrete formwork 1, a plurality of exhaust holes 2 are opened on the concrete formwork 1, a PVC pipe 3 is arranged in the exhaust hole 2, a replacement mechanism 4 is arranged between the exhaust hole 2 and the PVC pipe 3, and a blocking mechanism 5 is arranged on the exhaust hole 2.

[0034] When the concrete module is formed by the template, in order to make the upper surface of the concrete module flat and smooth, the concrete template 1 will be covered on the poured concrete. When the bubbles in the concrete are discharged upward, the bubbles are directly discharged from the PVC pipe 3 in the exhaust hole 2 on the concrete template 1. When the concrete overflows from the PVC pipe 3, the overflowed concrete is received by the blocking mechanism 5. After the concrete module is formed, the concrete template 1 is removed. When the concrete overflowing from the exhaust hole 2 hardens in the PVC pipe 3 and blocks the PVC pipe 3, the replacement mechanism 4 is directly used to release the connection between the PVC pipe 3 and the concrete template 1, and the concrete that has been filled with concrete is removed. The PVC pipe 3 hardened by the concrete is discarded, and then a new PVC pipe 3 is replaced, and the PVC pipe 3 is fixed by using the replacement mechanism 4, so that the exhaust hole 2 is not affected when the concrete template 1 is used next time. By placing the PVC pipe 3 in the exhaust hole 2 and then fixing the PVC pipe 3 by using the replacement mechanism 4, when the concrete overflows into the PVC pipe 3 of the exhaust hole 2 and hardens, the PVC pipe 3 is replaced by using the replacement mechanism 4, thereby reducing the possibility that the exhaust hole 2 on the concrete template 1 overflows into the exhaust hole 2 and hardens when exhausting, affecting the normal exhaust of the exhaust hole 2 of the concrete template 1.

[0035] Reference Figure 1 , Figure 2 and Figure 3The replacement mechanism 4 includes two clamping blocks 41 symmetrically arranged on the concrete template 1, a movable groove 43 is opened on the concrete template 1, the clamping block 41 is located in the movable groove 43, an arc groove 42 is opened on the clamping block 41, and a pushing component 44 is arranged between the clamping block 41 and the concrete template 1.

[0036] When concrete overflows into the PVC pipe 3 and hardens, the pushing component 44 is used to drive the clamping block 41 so that the clamping block 41 is moved away from the PVC pipe 3 in the moving groove 43. After the PVC pipe 3 lacks the clamping of the two clamping blocks 41, the PVC pipe 3 is directly taken out from the exhaust hole 2, and then a new PVC pipe 3 is cut and placed in the exhaust hole 2 so that the PVC pipe 3 is flush with the concrete formwork 1. Then the pushing component 44 is used to move the clamping block 41 closer to the PVC pipe 3. The arc grooves 42 on the two clamping blocks 41 contact the PVC pipe 3 so that the PVC pipe 3 is fixed, so that the concrete formwork 1 can use the exhaust hole 2 to exhaust normally when it is used next time. By clamping the PVC pipe 3 with the two clamping blocks 41, the PVC pipe 3 is connected to the concrete formwork 1, so that after the concrete enters the PVC pipe 3 and hardens, the PVC pipe 3 can be easily replaced, thereby reducing the possibility that the concrete enters the exhaust hole 2 and hardens, affecting the normal exhaust of the exhaust hole 2.

[0037] Reference Figure 1 , Figure 2 and Figure 3 The pushing component 44 includes a threaded rod 441 arranged on the concrete template 1, a sliding groove 442 is opened on the concrete template 1, the sliding groove 442 is connected to the moving groove 43, the threaded rod 441 passes through the sliding groove 442 and is rotatably connected to the concrete template 1, a sliding block 443 is arranged in the sliding groove 442, the sliding block 443 is slidably connected to the concrete template 1, and the threaded rod 441 passes through the sliding block 443 and is threadedly connected to the sliding block 443.

[0038] In addition, a pushing block 444 is provided at one end of the sliding block 443 facing the clamping block 41. The pushing block 444 is fixedly connected to the clamping block 41. Both the pushing block 444 and the sliding block 443 are provided with inclined surfaces, which correspond to each other. The inclined surface of the sliding block 443 is slidably connected to the inclined surface of the pushing block 444.

[0039] When it is necessary to move the clamping block 41 away from the PVC pipe 3, the threaded rod 441 is rotated to allow the sliding block 443 threadedly connected to the threaded rod 441 to move in the sliding groove 442. When the sliding block 443 moves, the inclined surface position belt of the sliding block 443 slides on the inclined surface of the pushing block 444, so that the pushing block 444 approaches the sliding block 443, and then the pushing block 444 drives the clamping block 41 away from the PVC pipe 3. After the new PVC pipe 3 is placed between the two clamping blocks 41, the threaded rod 441 is rotated in the opposite direction to allow the threaded rod 441 to move. The sliding block 443 on the rod 441 moves downward, so that the inclined surface of the sliding block 443 squeezes the inclined surface of the pushing block 444, so that the pushing block 444 moves toward the direction of the PVC pipe 3, and the pushing block 444 pushes the clamping block 41 to clamp the PVC pipe 3. By rotating the threaded rod 441, the threaded rod 441 drives the sliding block 443 to move back and forth, and the pushing block 444 drives the clamping block 41 to move back and forth, so that the two clamping blocks 41 can clamp the PVC pipe 3 conveniently, and the blocked PVC pipe 3 can be removed and replaced with a new PVC pipe 3.

[0040] Reference Figure 1 , Figure 2 and Figure 3 The inner wall of the arc groove 42 of the clamping block 41 is provided with uniformly distributed anti-skid patterns. When the arc grooves 42 of the two clamping blocks 41 clamp the PVC pipe 3, the anti-skid patterns on the inner wall of the arc groove 42 abut against the PVC pipe 3. By providing the anti-skid patterns on the inner wall of the arc groove 42 of the clamping block 41, the stability of the clamping block 41 clamping the PVC pipe 3 can be further improved, and the possibility of the PVC pipe 3 being clamped loosely due to the smooth surface of the PVC pipe 3 can be reduced.

[0041] Reference Figure 1 , Figure 2 and Figure 3 A sealing rubber ring 45 is provided on the inner wall of the vent hole 2, and the sealing rubber ring 45 is fixedly connected to the concrete formwork 1. When the PVC pipe 3 is inserted into the vent hole 2, the outer wall of the PVC pipe 3 contacts the sealing rubber ring 45. When the concrete formwork 1 is covered on the concrete, the concrete enters the gap between the PVC pipe 3 and the inner wall of the vent hole 2, and the sealing rubber ring blocks the concrete entering the gap. By fixing the sealing rubber ring on the inner wall of the vent hole 2, the possibility of concrete entering between the inner wall of the vent hole 2 and the PVC pipe 3 can be reduced, and the possibility of concrete entering the gap and hardening can be reduced.

[0042] Reference Figure 1 , Figure 2 and Figure 3The blocking mechanism 5 includes a collecting box 51 arranged on the concrete formwork 1, a positioning tube 52 is fixed to the bottom of the collecting box 51, the positioning tube 52 is connected to the collecting box 51, the positioning tube 52 corresponds to the PVC tube 3, and a fixing component 53 is arranged between the collecting box 51 and the concrete formwork 1.

[0043] In addition, the fixing assembly 53 includes two support blocks 532 symmetrically arranged on both sides of the collection box 51 , the support blocks 532 are threadedly connected with fixing bolts 533 , and the fixing bolts 533 are slidably connected with fixing buckles 531 .

[0044] After the PVC pipe 3 is fixed to the concrete formwork 1, the collecting box 51 is taken out, and the positioning tube 52 on the collecting box 51 is inserted into the PVC pipe 3, so that the positioning tube 52 limits the position of the collecting box 51, and then the fixing buckle 531 is slid on the fixing bolt 533, so that the fixing buckle 531 moves to the top of the collecting box 51, and then the fixing bolt 533 is screwed to make the bolt head on the fixing bolt 533 contact the fixing buckle 531, and the fixing buckle 531 contact the collecting box 51, so that the collecting box 51 contacts the concrete formwork 1 tightly, when concrete overflows from the PVC pipe 3, the overflowed concrete directly enters the collecting box 51 from the positioning tube 52, and by placing the collecting box 51 above the PVC pipe 3 and then connecting it with the PVC pipe 3 through the positioning tube 52, when concrete overflows from the PVC pipe 3, the overflowed concrete can be collected by the collecting box 51, thereby reducing the possibility of the overflowed concrete entering the moving groove 43 and hindering the movement of the clamping block 41.

[0045] Working principle: when it is necessary to use the concrete formwork 1 to cover the concrete in the concrete formwork, put a section of PVC pipe 3 between the two clamping blocks 41 in the exhaust hole 2, and then rotate the threaded tube to allow the inclined surface of the sliding block 443 to squeeze the inclined surface of the pushing block 444, so that the pushing block 444 moves in the direction of the PVC pipe 3, and the pushing block 444 pushes the clamping block 41 to clamp the PVC pipe 3, and then take out the collecting box 51, and insert the positioning tube 52 on the collecting box 51 into the PVC pipe 3, so that the positioning tube 52 limits the position of the collecting box 51, and then let the fixing buckle 531 slide on the fixing bolt 533, and let the fixing buckle 531 move to the top of the collecting box 51, and then turn the fixing bolt 533, so that the bolt head on the fixing bolt 533 contacts the fixing buckle 531, and the fixing buckle 531 contacts the collecting box 51, and the collecting box 51 contacts the concrete formwork 1. When the concrete under the concrete formwork 1 is exhausted, the gas is discharged from the exhaust The PVC pipe 3 in the air hole 2 is discharged. When concrete overflows from the PVC pipe 3, the overflowed concrete directly enters the collecting box 51 from the positioning pipe 52. When the overflowed concrete hardens in the PVC pipe 3, a new section of the PVC pipe 3 is cut, and then the threaded rod 441 is rotated to allow the sliding block 443 threadedly connected to the threaded rod 441 to move in the sliding groove 442. When the sliding block 443 moves, the inclined position belt of the sliding block 443 slides on the inclined surface of the pushing block 444, allowing the pushing block 444 to approach the direction of the sliding block 443, and then the pushing block 444 drives the clamping block 41 away from the PVC pipe 3, and the blocked PVC pipe 3 is taken out, and then the new PVC pipe 3 is placed between the two clamping blocks 41, so that the PVC pipe 3 is flush with the concrete template 1, and then the PVC pipe 3 is fixed by the two clamping blocks 41, so that the exhaust hole 2 of the concrete template 1 is in a smooth state when it is used next time.

Claims

1. A self-compacting concrete formwork vent structure, comprising a concrete formwork (1), characterized in that: The concrete formwork (1) is provided with a plurality of exhaust holes (2), a PVC pipe (3) is arranged in the exhaust hole (2), a replacement mechanism (4) is arranged between the exhaust hole (2) and the PVC pipe (3), and a blocking mechanism (5) is arranged on the exhaust hole (2).

2. A self-compacting concrete formwork vent structure according to claim 1, characterized in that: The replacement mechanism (4) comprises two clamping blocks (41) symmetrically arranged on the concrete template (1), a movable groove (43) is provided on the concrete template (1), the clamping block (41) is located in the movable groove (43), an arc groove (42) is provided on the clamping block (41), and a pushing component (44) is provided between the clamping block (41) and the concrete template (1).

3. A self-compacting concrete formwork vent structure according to claim 2, characterized in that: The pushing assembly (44) comprises a threaded rod (441) arranged on the concrete template (1); a sliding groove (442) is provided on the concrete template (1); the sliding groove (442) is connected to the moving groove (43); the threaded rod (441) passes through the sliding groove (442) and is rotatably connected to the concrete template (1); a sliding block (443) is provided in the sliding groove (442); the sliding block (443) is slidably connected to the concrete template (1); and the threaded rod (441) passes through the sliding block (443) and is threadedly connected to the sliding block (443).

4. A self-compacting concrete formwork vent structure according to claim 3, characterized in that: A pushing block (444) is provided at one end of the sliding block (443) facing the clamping block (41); the pushing block (444) is fixedly connected to the clamping block (41); inclined surfaces are provided on the pushing block (444) and the sliding block (443) and correspond to each other; the inclined surface of the sliding block (443) is slidably connected to the inclined surface of the pushing block (444).

5. The self-compacting concrete formwork vent structure according to claim 2, characterized in that: The inner wall of the arc-shaped groove (42) of the clamping block (41) is provided with evenly distributed anti-slip grooves.

6. A self-compacting concrete formwork vent structure according to claim 2, characterized in that: The inner wall of the exhaust hole (2) is provided with a sealing rubber ring (45), and the sealing rubber ring (45) is fixedly connected to the concrete formwork (1).

7. The self-compacting concrete formwork vent structure according to claim 2, characterized in that: The blocking mechanism (5) comprises a collection box (51) arranged on the concrete formwork (1); a positioning tube (52) is fixed to the bottom of the collection box (51); the positioning tube (52) is connected to the collection box (51); the positioning tube (52) corresponds to the PVC tube (3); and a fixing component (53) is arranged between the collection box (51) and the concrete formwork (1).

8. The self-compacting concrete formwork vent structure according to claim 7, characterized in that: The fixing assembly (53) comprises two support blocks (532) symmetrically arranged on both sides of the collection box (51), the support blocks (532) being threadedly connected with fixing bolts (533), and the fixing bolts (533) being slidably connected with fixing buckles (531).

Images