Prefabricated hollow column pouring mold
By using a combination structure of shielding plates, bottom plates, side plates and airbags, combined with airbag clamping and driving components, efficient disassembly of the inner formwork of precast hollow columns is achieved, solving the problem of low formwork disassembly efficiency and improving construction efficiency and formwork stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG PINGAN BUILDING IND TECH CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-05-08
AI Technical Summary
In existing technologies, the dismantling efficiency of the inner formwork of precast hollow columns is low, especially in confined internal spaces where operators spend a lot of time, resulting in low dismantling efficiency.
The casting assembly includes a shielding plate, a bottom plate, side plates, and airbags. The template is clamped by inflating the airbags, and the airbags are removed after the casting is completed. Combined with the drive assembly and push rod structure, the template can be automatically disassembled.
It improves the demolding efficiency of precast hollow columns and the ease of formwork assembly, reduces the probability of formwork movement during the pouring process, and ensures the stability of the reinforcing cage and the quality of the pouring.
Smart Images

Figure CN224210159U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of casting mold technology, and in particular to a precast hollow column casting mold. Background Technology
[0002] Currently, with the upgrading of the construction industry, precast columns are being used more and more widely in building construction. Existing column structures include solid columns and hollow precast columns. Hollow columns offer many advantages during on-site construction: they eliminate the need for on-site formwork, shorten the construction period, improve the lateral bearing capacity and stability of the column, save building materials, reduce overall weight, and facilitate hoisting. Therefore, they are widely used in various types of buildings.
[0003] In the existing technology, wooden formwork is used on the inside of the hollow column, and steel pipes are erected inside as internal supports. The wooden formwork system is used on the outside of the hollow column and reinforced with clamps. The inner and outer formwork systems are independent of each other. After the pouring is completed, the inner and outer supports are disassembled in sequence.
[0004] Regarding the aforementioned technologies, after the casting is completed, the operators need to disassemble the internal formwork. Due to the long overall length of the hollow column and the small internal space, the operators need to spend a lot of time disassembling the internal formwork of the hollow column in order to avoid damaging the hollow column. The demolding efficiency is low. Therefore, there is an urgent need for a prefabricated hollow column casting mold to improve the demolding efficiency. Utility Model Content
[0005] To improve the efficiency of demolding precast hollow columns, this application provides a precast hollow column casting mold.
[0006] This application provides a precast hollow column casting mold, which adopts the following technical solution:
[0007] A precast hollow column casting mold includes a casting assembly. The casting assembly includes two baffles, two base plates, two side plates, and an airbag. The two baffles are parallel to each other and horizontally arranged. The base plates correspond one-to-one with the baffles and are fixedly connected to the lower end of the baffles and arranged along the length of the baffles. The two base plates are fitted together. The two side plates are located on both sides of the two baffles along the length of the baffles and are used to seal the openings formed by the baffles and the base plates. The two side plates have openings along the thickness of the baffles. The airbag is located between the two side plates and passes through the two openings in sequence. An air inlet pipe is connected to one side of the airbag along the length of the baffles. Several clamping components are provided between the two baffles. The clamping components are located above the baffles and arranged along the length of the baffles.
[0008] By adopting the above technical solution, concrete is poured into the casting component to achieve the desired shape. During the pouring process, the shielding plate, bottom plate, and side plate work together to shield the sides. Concrete is poured from above, and the air inlet pipe inflates the airbag to a preset size. The clamping component is used to clamp the two shielding plates, which helps to reduce the probability of the shielding plates moving relative to each other during the pouring process. When the pouring is completed, the gas in the airbag is discharged from the air inlet pipe, and the airbag is removed from the opening, thus completing the dismantling of the inner formwork of the precast hollow column. By moving the two shielding plates away from each other, the two shielding plates drive the two bottom plates away from each other, thereby completing the dismantling of the outer formwork and improving the efficiency of the precast hollow column demolding.
[0009] Optionally, both side plates have several through holes along the thickness direction for fixing the reinforcing cage.
[0010] By adopting the above technical solution, the two ends of the reinforcing cage pass through through holes along the length direction for positioning, so that the reinforcing cage is poured according to the preset position, which improves the strength of the precast hollow column and the stability of the reinforcing cage during the pouring process.
[0011] Optionally, the clamping assembly includes two positioning blocks, a connecting rod, and two nuts. The positioning blocks and the baffle plate correspond one-to-one. The positioning blocks are fixedly connected to the upper end of the baffle plate. The connecting rod passes through the two positioning blocks in sequence and is slidably connected to the positioning blocks along the length of the connecting rod. The two nuts are respectively sleeved on both ends of the connecting rod along the length and are threadedly connected to the connecting rod. Both nuts are located on the side of the two positioning blocks that are far apart from each other.
[0012] By adopting the above technical solution, the positioning block is used to support the connecting rod, and the nut and positioning block cooperate to fix the connecting rod, thereby keeping the distance between the two baffles constant and improving the stability of the mold during the casting process.
[0013] Optionally, a number of rectangular blocks are fixed to the upper end of the shielding plate, and a threaded rod is provided above the rectangular blocks. The threaded rod passes through the rectangular blocks and is threadedly connected to the rectangular blocks. A positioning plate is fixed to the lower end of the threaded rod.
[0014] By adopting the above technical solution, the rectangular block is used to position the threaded rod. The rotation of the threaded rod causes the positioning plate to descend. The positioning plate is used to remind the pouring height. When the pouring reaches the lower end face of the positioning plate, the pouring work is stopped, which helps to reduce the probability of over-pouring.
[0015] Optionally, a support block is provided at the lower end of the base plate, and the side plates, shielding plates and base plate are all located inside the support block. The two base plates are slidably connected to the support block along the width direction, and the two side plates are slidably connected to the support block along the length direction. A driving component is provided between the support block and the two shielding plates to drive the two shielding plates to move closer or further apart. A pushing component is provided between the two base plates to push the two side plates to move further apart.
[0016] By adopting the above technical solution, the support block supports the side plate and the bottom plate. When the pouring is completed, the drive component drives the two shielding plates and the two bottom plates to move away from each other. During the process of the two bottom plates moving away from each other, the push component pushes the two side plates to move away from each other, thus completing the removal of the outer formwork and further improving the efficiency of formwork removal.
[0017] Optionally, two sets of pushing components are provided along the length of the base plate, and are respectively located on both sides of the base plate along the length of the base plate. The pushing component includes two guide rods and a push rod. The lower end of the base plate is provided with moving grooves on both sides along the length of the base plate. The moving grooves of the two base plates are facing each other. The guide rods and the base plates correspond one to one. One end of the guide rod is hinged to the base plate in the transverse direction. The push rod is located between the two guide rods and is slidably connected to the support block along the length of the base plate. The end of the guide rod away from the base plate is hinged to the push rod in the transverse direction. One end of the push rod is attached to the side plate, and the other end of the push rod is located on the side of the guide rod away from the side plate.
[0018] By adopting the above technical solution, when the two base plates move away from each other, the guide rod rotates in the moving groove, and the guide rod drives the push rod to move closer to the side plate, thereby pushing the side plate to move away from the base plate, which improves the convenience of demolding.
[0019] Optionally, the push rod passes through the side plate and is slidably connected to the side plate along the length of the push rod. A locking element is provided on the outside of the push rod to fix the side plate and the push rod.
[0020] By adopting the above technical solution, the locking component is used to fix the side plate and the push rod. When the push rod is reset, it drives the side plate to reset, which improves the convenience of assembling the outer template and the convenience of replacing the side plate.
[0021] Optionally, the drive assembly includes several electric telescopic rods, which are fixedly connected to the inside of the support block and set perpendicular to the baffle plate. The output end of the electric telescopic rod is fixedly connected to the baffle plate.
[0022] By adopting the above technical solution, the electric telescopic rod is used to move the baffle plate closer to or away from the support block, which improves the convenience of mold resetting.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. During the pouring process, the shielding plate, bottom plate, and side plate work together to shield the sides. Concrete is poured from above, and air is injected into the airbag through the air inlet pipe, causing the airbag to expand to the preset size. When the pouring is completed, the gas in the airbag is discharged from the air inlet pipe, and the airbag is removed from the opening, thus completing the dismantling of the inner formwork of the precast hollow column. By moving the two shielding plates away from each other, the two shielding plates drive the two bottom plates away from each other, thereby completing the dismantling of the outer formwork and improving the efficiency of the precast hollow column formwork dismantling.
[0025] 2. The drive assembly moves the two baffles and the two base plates away from each other. During the process of the two base plates moving away from each other, the guide rod rotates in the moving groove. The guide rod drives the push rod to move closer to the side plate, thereby pushing the side plate to move away from the base plate, which improves the convenience of demolding.
[0026] 3. The locking mechanism is used to fix the side plate and the push rod. When the push rod is reset, it drives the side plate to reset, which improves the convenience of assembling the outer template and the convenience of replacing the side plate. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the overall structure of Example 1.
[0028] Figure 2 This is a schematic diagram of the overall structure of Example 2.
[0029] Figure 3 This is a schematic diagram designed to highlight the connection between the push component and the base plate in Embodiment 2.
[0030] Explanation of reference numerals in the attached drawings: 1. Casting assembly; 11. Baffle plate; 111. Rectangular block; 112. Threaded rod; 113. Positioning plate; 12. Base plate; 13. Side plate; 131. Through port; 132. Through hole; 14. Airbag; 141. Air inlet pipe; 2. Clamping assembly; 21. Positioning block; 22. Connecting rod; 23. Nut; 3. Support block; 31. Drive assembly; 311. Electric telescopic rod; 4. Push assembly; 41. Guide rod; 42. Push rod; 43. Moving groove; 44. Locking element. Detailed Implementation
[0031] The present application will be further described in detail below with reference to all the accompanying drawings.
[0032] This application discloses a precast hollow column casting mold.
[0033] Example 1
[0034] Reference Figure 1A precast hollow column casting mold includes a casting component 1. Concrete is poured into the casting component 1 to achieve the desired shape. The casting component 1 includes two baffle plates 11, two base plates 12, two side plates 13, and an airbag 14. The two baffle plates 11 are parallel to each other and horizontally arranged. The base plates 12 correspond one-to-one with the baffle plates 11 and are fixedly connected to the lower end of the baffle plates 11 and arranged along the length of the baffle plates 11. The two base plates 12 are close to each other. When the two baffle plates 11 move away from each other, the two base plates 12 are moved away from each other.
[0035] Reference Figure 1 Two side plates 13 are located on both sides of the two shielding plates 11 along the length direction, and are used to seal the opening formed by the shielding plates 11 and the bottom plate 12. The two side plates 13 have openings 131 along the thickness direction. The airbag 14 is located between the two side plates 13 and passes through the two openings 131 in sequence. One side of the airbag 14 along the length direction is connected to the air inlet pipe 141. During the pouring process, the shielding plates 11, the bottom plate 12 and the side plates 13 cooperate to shield the sides, so that the concrete is poured from above. The air inlet pipe 141 inflates the airbag 14, so that the airbag 14 expands to the preset size. Multiple clamping components 2 are provided between the two baffles 11. The multiple clamping components 2 are located above the baffles 11 and are arranged along the length of the baffles 11. The clamping components 2 are used to clamp the two baffles 11, which helps to reduce the probability of the baffles 11 moving relative to each other during the pouring process. When the pouring is completed, the gas in the airbag 14 is discharged from the air inlet pipe 141, and the airbag 14 is taken out from the outlet 131, thus completing the dismantling of the precast hollow column inner formwork and improving the efficiency of precast hollow column demolding.
[0036] Reference Figure 1 Both side plates 13 have multiple through holes 132 along the thickness direction. The two ends of the reinforcing cage pass through the through holes 132 along the length direction to position the reinforcing cage, so that the reinforcing cage is poured in the preset position, which improves the strength of the precast hollow column and the stability of the reinforcing cage during the pouring process.
[0037] Reference Figure 1 The clamping assembly 2 includes two positioning blocks 21, a connecting rod 22, and two nuts 23. The positioning blocks 21 correspond one-to-one with the baffle plates 11. The positioning blocks 21 are fixedly connected to the upper end of the baffle plates 11. The connecting rod 22 passes through the two positioning blocks 21 sequentially and is slidably connected to the positioning blocks 21 along the length of the connecting rod 22. The positioning blocks 21 support the connecting rod 22. The two nuts 23 are respectively sleeved on both ends of the connecting rod 22 along its length and are threadedly connected to the connecting rod 22. Both nuts 23 are located on the side of the two positioning blocks 21 that are far apart from each other. The nuts 23 and the positioning blocks 21 cooperate to fix the connecting rod 22, thereby keeping the distance between the two baffle plates 11 constant and improving the stability of the mold during the casting process.
[0038] Reference Figure 1 The upper end of the baffle plate 11 is fixed with multiple rectangular blocks 111. A threaded rod 112 is provided above the rectangular blocks 111. The threaded rod 112 passes through the rectangular blocks 111 and is threadedly connected to the rectangular blocks 111. A positioning plate 113 is fixed at the lower end of the threaded rod 112. The rectangular blocks 111 are used to position the threaded rod 112. The rotation of the threaded rod 112 causes the positioning plate 113 to descend. The positioning plate 113 is used to remind the pouring height. When the pouring reaches the lower end face of the positioning plate 113, the pouring work is stopped, which helps to reduce the probability of over-pouring.
[0039] The implementation principle of Embodiment 1 of this application is as follows: During the pouring process, the shielding plate 11, the bottom plate 12 and the side plate 13 cooperate to shield the sides, so that the concrete is poured from above. The air inlet pipe 141 inflates the airbag 14, causing the airbag 14 to expand to a preset size. The nut 23 is rotated so that the nut 23 fits with the positioning block 21, fixing the connecting rod 22, thereby keeping the distance between the two shielding plates 11 unchanged. When the pouring is completed, the gas in the airbag 14 is discharged from the air inlet pipe 141, and the airbag 14 separates from the side plate 13, thus completing the dismantling of the inner formwork of the precast hollow column. By moving the two shielding plates 11 away from each other, the two shielding plates 11 drive the two bottom plates 12 away from each other, thereby completing the dismantling of the outer formwork, which improves the efficiency of the precast hollow column formwork dismantling.
[0040] Example 2
[0041] Reference Figure 2 The difference between this embodiment and Embodiment 1 is that: a support block 3 is provided at the lower end of the base plate 12, and the side plates 13, shielding plates 11, and base plate 12 are all located inside the support block 3. The two base plates 12 are slidably connected to the support block 3 along the width direction. A driving component 31 is provided between the support block 3 and the two shielding plates 11. The support block 3 supports the side plates 13 and the base plate 12. When the pouring is completed, the driving component 31 drives the two shielding plates 11 and the two base plates 12 to move away from each other. The two side plates 13 are slidably connected to the support block 3 along the length direction of the support block 3. A pushing component 4 is provided between the two base plates 12. During the process of the two base plates 12 moving away from each other, the pushing component 4 pushes the two side plates 13 away from each other, thus completing the removal of the outer formwork.
[0042] Reference Figure 2 The drive assembly 31 includes multiple electric telescopic rods 311, which are fixedly connected to the inner side of the support block 3 and set perpendicular to the baffle plate 11. The output end of the electric telescopic rod 311 is fixedly connected to the baffle plate 11. The electric telescopic rod 311 is used to drive the baffle plate 11 closer to or away from the support block 3, which improves the convenience of mold reset.
[0043] Reference Figure 2 and Figure 3 Two sets of pushing components 4 are provided along the length of the base plate 12 and are located on both sides of the base plate 12 along the length. The pushing components 4 include two guide rods 41 and push rods 42. Moving grooves 43 are provided on both sides of the lower end of the base plate 12 along the length. The moving grooves 43 are arranged along the length of the base plate 12 and the moving grooves 43 of the two base plates 12 are facing each other. The guide rods 41 and the base plates 12 correspond one to one. One end of the guide rod 41 is hinged to the base plate 12 in the transverse direction. When the two base plates 12 move, the guide rod 41 rotates in the moving groove 43.
[0044] Reference Figure 2 and Figure 3 The push rod 42 is located between the two guide rods 41 and is slidably connected to the support block 3 along the length of the base plate 12. The end of the guide rod 41 away from the base plate 12 is hinged to the push rod 42 in the transverse direction. One end of the push rod 42 is in contact with the side plate 13, and the other end of the push rod 42 is located on the side of the guide rod 41 away from the side plate 13. When the two base plates 12 move away from each other, the guide rod 41 rotates in the moving groove 43. The guide rod 41 drives the push rod 42 to move closer to the side plate 13, thereby pushing the side plate 13 to move away from the base plate 12, which improves the convenience of demolding.
[0045] Reference Figure 2 and Figure 3 The push rod 42 passes through the side plate 13 and is slidably connected to the side plate 13 along the length of the push rod 42. A locking member 44 is provided on the outside of the push rod 42. The locking member 44 is used to fix the side plate 13 and the push rod 42. When the push rod 42 is reset, the push rod 42 drives the side plate 13 to be reset, which improves the convenience of assembling the outer template and the convenience of replacing the side plate 13.
[0046] 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 precast hollow column casting mold, comprising a casting component (1), characterized in that: The casting assembly (1) includes two baffles (11), two base plates (12), two side plates (13), and an airbag (14). The two baffles (11) are parallel to each other and horizontally arranged. The base plates (12) correspond one-to-one with the baffles (11). The base plates (12) are fixedly connected to the lower end of the baffles (11) and are arranged along the length of the baffles (11). The two base plates (12) are fitted together. The two side plates (13) are located on both sides of the two baffles (11) along the length of the baffles (11), respectively, for... The opening formed by the baffle plate (11) and the bottom plate (12) is sealed. The two side plates (13) have openings (131) along the thickness direction. The airbag (14) is located between the two side plates (13) and passes through the two openings (131) in sequence. The airbag (14) is connected to an air inlet pipe (141) on one side along the length direction. Several clamping components (2) are provided between the two baffle plates (11). The several clamping components (2) are located above the baffle plates (11) and are arranged along the length direction of the baffle plates (11).
2. The precast hollow column casting mold according to claim 1, characterized in that: Both side plates (13) have several through holes (132) along the thickness direction for fixing the steel cage.
3. The precast hollow column casting mold according to claim 1, characterized in that: The clamping assembly (2) includes two positioning blocks (21), a connecting rod (22) and two nuts (23). The positioning blocks (21) and the baffle plate (11) correspond one-to-one. The positioning blocks (21) are fixedly connected to the upper end of the baffle plate (11). The connecting rod (22) passes through the two positioning blocks (21) in sequence and is slidably connected to the positioning blocks (21) along the length direction of the connecting rod (22). The two nuts (23) are respectively sleeved on both ends of the connecting rod (22) along the length direction and are threadedly connected to the connecting rod (22). The two nuts (23) are located on the side of the two positioning blocks (21) that are far away from each other.
4. The precast hollow column casting mold according to claim 1, characterized in that: The upper end of the shield (11) is fixed with a plurality of rectangular blocks (111), and a threaded rod (112) is provided above the rectangular blocks (111). The threaded rod (112) passes through the rectangular blocks (111) and is threadedly connected to the rectangular blocks (111). The lower end of the threaded rod (112) is fixed with a positioning plate (113).
5. A precast hollow column casting mold according to claim 1, characterized in that: The bottom plate (12) is provided with a support block (3) at its lower end. The two side plates (13), the two shielding plates (11) and the bottom plate (12) are all located inside the support block (3). The two bottom plates (12) are slidably connected to the support block (3) along the width direction. The two side plates (13) are slidably connected to the support block (3) along the length direction of the support block (3). A driving component (31) is provided between the support block (3) and the two shielding plates (11) to drive the two shielding plates (11) to move closer or further away from each other. A pushing component (4) is provided between the two bottom plates (12) to push the two side plates (13) to move further away from each other.
6. A precast hollow column casting mold according to claim 5, characterized in that: The pushing assembly (4) is provided in two sets along the length of the base plate (12), and is located on both sides of the base plate (12) along the length. The pushing assembly (4) includes two guide rods (41) and a push rod (42). The lower end of the base plate (12) is provided with moving grooves (43) on both sides along the length. The moving grooves (43) are arranged along the length of the base plate (12), and the moving grooves (43) of the two base plates (12) are facing each other. The guide rods (41) and the base plate (12) are connected. In a one-to-one correspondence, one end of the guide rod (41) is hinged to the base plate (12) in the transverse direction, the push rod (42) is located between the two guide rods (41) and is slidably connected to the support block (3) along the length direction of the base plate (12), the end of the guide rod (41) away from the base plate (12) is hinged to the push rod (42) in the transverse direction, one end of the push rod (42) is in contact with the side plate (13), and the other end of the push rod (42) is located on the side of the guide rod (41) away from the side plate (13).
7. A precast hollow column casting mold according to claim 6, characterized in that: The push rod (42) passes through the side plate (13) and is slidably connected to the side plate (13) along the length of the push rod (42). A locking member (44) is provided on the outside of the push rod (42) to fix the side plate (13) and the push rod (42).
8. A precast hollow column casting mold according to claim 5, characterized in that: The drive assembly (31) includes several electric telescopic rods (311), which are fixedly connected to the inner side of the support block (3) and set perpendicular to the baffle plate (11). The output end of the electric telescopic rod (311) is fixedly connected to the baffle plate (11).