A formwork for a precast fair-faced concrete column

Abstract

The application relates to a formwork for prefabricating a fair-faced concrete column and relates to the technical field of building column manufacturing. The formwork for prefabricating a fair-faced concrete column comprises a bottom formwork table, a fixed side formwork arranged on the bottom formwork table, a plurality of movable side formworks arranged on the bottom formwork table, the plurality of movable side formworks, the fixed side formwork and the bottom formwork table jointly forming a pouring cavity with an open top, a first driving element arranged on the bottom formwork table and used for driving the plurality of movable side formworks to move in the direction away from or close to the pouring cavity, a grouting element slidably arranged in the pouring cavity, a second driving element arranged on the fixed side formwork and used for driving the grouting element to slide in the length direction of the pouring cavity, a slot arranged on the bottom formwork table, and a slot arranged on the bottom formwork table and used for inserting a stress longitudinal reinforcement. The cooperation of the components can improve the uniformity of the distribution of the fair-faced concrete in the pouring cavity and guarantee the prefabrication quality of the fair-faced concrete column.

Description

Technical Field

[0001] This application relates to the field of building column manufacturing technology, and in particular to a formwork for a precast fair-faced concrete column. Background Technology

[0002] Traditionally, the construction of building columns requires on-site formwork erection, binding of steel reinforcement cages and other components, followed by on-site pouring of fair-faced concrete. After the fair-faced concrete has solidified and reached a certain strength, the formwork around the column is then removed. This method suffers from problems such as low construction efficiency, complex process, and long construction period.

[0003] Therefore, in current construction practices, precast fair-faced concrete columns are often first made, then transported to the construction site, and subsequently installed directly. Precast fair-faced concrete columns are widely used in construction due to their advantages such as high efficiency, short construction period, good product quality, minimal environmental impact, and strong sustainable development capabilities.

[0004] Fair-faced concrete columns have longitudinal reinforcing bars running through them, requiring specialized formwork for prefabrication. Common formwork for fair-faced concrete columns includes a horizontal bottom formwork platform, on which two opposing end formworks and two opposing side formworks are installed. The bottom formwork platform, the two end formworks, and the two side formworks together form a horizontally lying pouring cavity for concrete pouring. The top of the pouring cavity forms an opening the same length as the fair-faced concrete column. During prefabrication, the longitudinal reinforcing bars are first placed inside the pouring cavity, running horizontally through the entire cavity and exiting from the two side formworks at both ends. Then, fair-faced concrete is poured into the opening through grouting pipes, allowing it to enter the cavity. After the fair-faced concrete has solidified, the column is removed. The two side formworks correspond to the two ends of the column, and the bottom formwork platform, the two side formworks, and the opening correspond to the four sides of the column. This completes the prefabrication of the fair-faced concrete column.

[0005] In the above process, when fair-faced concrete is poured into the casting cavity through the grouting pipe at one open end, the large diameter of the open end will cause unevenness of the fair-faced concrete in the casting cavity. The fair-faced concrete in the casting cavity near the grouting pipe end is denser, while the fair-faced concrete in the casting cavity at the other end is sparser. This unevenness will affect the overall strength of the fair-faced concrete column, thereby reducing the precast quality of the fair-faced concrete column. Summary of the Invention

[0006] In order to improve the problem in the prior art where the fair-faced concrete is poured unevenly into the casting cavity, which affects the overall strength of the fair-faced concrete column and reduces the precast quality of the fair-faced concrete column, this application provides a template for precast fair-faced concrete columns.

[0007] The formwork for a precast fair-faced concrete column provided in this application adopts the following technical solution: A formwork for precast fair-faced concrete columns, used to form fair-faced concrete columns with reinforcing longitudinal ribs, includes a bottom formwork platform, a fixed side formwork platform, and multiple movable side formwork platforms. The multiple movable side formwork platforms, the fixed side formwork platforms, and the bottom formwork platform together enclose a casting cavity with an open top. A first driving member is provided on the bottom formwork platform to drive the multiple movable side formwork platforms to move in a direction away from or towards the casting cavity. A grouting component is slidably disposed within the casting cavity. A second driving member is provided on the fixed side formwork platform to drive the grouting component to slide along the length direction of the casting cavity. Slots are provided on the bottom formwork platform for inserting reinforcing longitudinal ribs.

[0008] By adopting the above technical solution, the template is set vertically as a whole. When prefabricating the fair-faced concrete column, the bottom end of the stressed longitudinal reinforcement is inserted into the slot, and the stressed longitudinal reinforcement runs through the entire casting cavity. Multiple movable side molds are erected, and the multiple movable side molds, fixed side molds, and bottom mold platform together form a casting cavity with an open top. At this time, the grouting component is located at the bottom of the casting cavity. After that, fair-faced concrete is poured into the casting cavity through the grouting component. At the same time, the second driving component drives the grouting component to slide upward along the length direction of the fixed side mold. The grouting component slides while injecting fair-faced concrete. When the fair-faced concrete in the casting cavity reaches the design elevation of the fair-faced concrete column, the grouting component and the second driving component stop operating to wait for the fair-faced concrete to solidify. After the fair-faced concrete has solidified and formed, the first driving component drives the multiple movable side molds to move in a direction away from the casting cavity, thereby causing the multiple movable side molds to separate from the formed fair-faced concrete column. The fair-faced concrete column is driven out of the casting cavity, thus completing the prefabrication of the fair-faced concrete column.

[0009] The cooperation of the various components in the above process can complete the prefabrication of fair-faced concrete columns. During the process of injecting fair-faced concrete into the casting cavity, the grouting component slides while grouting, thereby injecting fair-faced concrete into various positions in the casting cavity. Since the template is set vertically as a whole, the diameter of the opening of the template is reduced. When fair-faced concrete is injected into the casting cavity through the opening, the uniformity of the distribution of fair-faced concrete in the casting cavity is improved, thereby ensuring the prefabrication quality of fair-faced concrete columns.

[0010] Optionally, the second driving component includes a movable plate and a first driving part. The grouting component is disposed on the movable plate. The first driving part is used to drive the movable plate to slide along the length direction of the casting cavity. The movable plate is provided with an insertion hole corresponding to the slot position, and the stressed longitudinal rib passes through the insertion hole.

[0011] By adopting the above technical solution, when prefabricating fair-faced concrete columns, the bottom end of the stressed longitudinal reinforcement is inserted into the slot through the insertion hole. The first driving part drives the movable plate to slide, and the movable plate drives the grouting component to slide. The grouting component slides and grouts at the same time. During this process, the stressed longitudinal reinforcement is inserted through the insertion hole, and the movable plate supports the stressed longitudinal reinforcement, thereby improving the stability of the stressed longitudinal reinforcement in the pouring cavity during the fair-faced concrete pouring process and preventing the stressed longitudinal reinforcement from shaking or tilting.

[0012] Optionally, the insertion hole is connected to a first guide hole, which is located on the side of the movable plate away from the bottom mold platform and is flared outward.

[0013] By adopting the above technical solution, the stressed longitudinal rib is inserted into the insertion hole through the first guide hole. The first guide hole, which is set in an outwardly flared shape, facilitates the connection between the stressed longitudinal rib and the insertion hole, so that the stressed longitudinal rib can be inserted into the insertion hole.

[0014] Optionally, a top plate is slidably provided on the fixed side mold, the first driving part is disposed on the top plate, and a second driving part is provided on the fixed side mold for driving the top plate to slide along the length direction of the casting cavity. A support hole is provided on the top plate, and the end of the stressed longitudinal rib away from the slot passes through the support hole.

[0015] By adopting the above technical solution, after the bottom end of the stressed longitudinal reinforcement is inserted into the slot, the top plate is driven by the second drive unit to slide in the direction close to the stressed longitudinal reinforcement, and the top end of the stressed longitudinal reinforcement is inserted into the support hole. The joint cooperation of the slot and the support hole can fix both ends of the stressed longitudinal reinforcement, thereby improving the stability of the stressed longitudinal reinforcement in the casting cavity during the pouring of fair-faced concrete and preventing the stressed longitudinal reinforcement from shaking or tilting. After the fair-faced concrete has solidified, the top plate can be driven by the second drive unit to slide in the direction away from the stressed longitudinal reinforcement, and the stressed longitudinal reinforcement is disengaged from the support hole, so that the fair-faced concrete column can be demolded subsequently.

[0016] Optionally, the grouting component includes a grouting chamber disposed on one side of the fixed side mold, and a grouting pipe communicating with the casting cavity is provided through the middle of the movable plate. The grouting pipe is a corrugated pipe and communicates with the grouting chamber.

[0017] By adopting the above technical solution, the grouting chamber stores fair-faced concrete and can be connected to fair-faced concrete from the outside. The fair-faced concrete in the grouting chamber is introduced into the pouring cavity through the grouting pipe, which is located in the middle of the pouring cavity. This allows the fair-faced concrete injected through the grouting pipe to be introduced into all positions in the pouring cavity more evenly. Since the grouting pipe is a corrugated pipe, it can adapt to the expansion and contraction when the movable plate slides, thereby avoiding the grouting pipe from bending during the sliding of the movable plate, which would prevent the channel for fair-faced concrete from being blocked at the bend.

[0018] Optionally, the grouting pipe is equipped with multiple nozzles located inside the casting cavity, and the multiple nozzles spray in different directions.

[0019] By adopting the above technical solution, the grouting pipe delivers the fair-faced concrete in the grouting chamber to the nozzles. Multiple nozzles work together to spray the fair-faced concrete into the pouring cavity. Since the spraying directions of the multiple nozzles are different, the fair-faced concrete can be delivered to various positions in the pouring cavity, and the uniformity of the fair-faced concrete in the pouring cavity is further improved.

[0020] Optionally, one end of the grouting pipe is rotatably connected to the movable plate, and the other end is rotatably connected to the grouting chamber. The movable plate is provided with a third driving part for driving the grouting pipe to rotate.

[0021] By adopting the above technical solution, when the grouting pipe and the nozzle work together to pour fair-faced concrete, the third drive unit drives the grouting pipe to rotate, and the fair-faced concrete sprayed into the pouring cavity through the nozzle can be rotated and sprayed out, and the spray coverage area of ​​the nozzle is further expanded.

[0022] Optionally, the third drive unit includes a first motor disposed on the side of the movable plate away from the pouring cavity, a gear is coaxially fixedly connected to the output shaft of the first motor, and a gear ring is coaxially fixed to the grouting pipe, the gear meshing with the gear ring.

[0023] By adopting the above technical solution, the operation of the first motor drives the gear to rotate, and the rotation of the gear drives the gear ring to rotate, thereby realizing the rotation of the grouting pipe. Since the first motor is set on the side of the movable plate away from the pouring cavity, the fair-faced concrete will not fall onto the first motor, gear and gear ring during the entire process of prefabrication of the fair-faced concrete column, thus avoiding affecting the operation of the first motor, gear and gear ring.

[0024] Optionally, the movable side mold is hinged to the bottom mold platform. The first driving component includes multiple hydraulic rods. Each movable side mold has a corresponding hydraulic rod on the side away from the casting cavity. One end of the hydraulic rod is hinged to the bottom mold platform, and the other end is hinged to the corresponding movable side mold.

[0025] By adopting the above technical solution, after the fair-faced concrete has solidified and formed, the hydraulic rod extends and retracts, and the movable side mold corresponding to the hydraulic rod rotates accordingly. The movable side mold rotates in a direction away from the pouring cavity to separate from the formed fair-faced concrete column. The way the movable side mold rotates to demold makes the contact area between the movable side mold and the fair-faced concrete column gradually decrease, thereby reducing the demolding difficulty and making it easier to separate the movable side mold from the fair-faced concrete column.

[0026] Optionally, a vibrating element is slidably provided on the side of the fixed side mold away from the casting cavity, and a third driving element is provided on the fixed side mold to drive the vibrating element to slide along the length direction of the casting cavity.

[0027] By adopting the above technical solution, during the process of grouting while the grouting component slides, the third driving component drives the vibrating component to slide synchronously with the grouting component. The vibrating component operates to vibrate the fair-faced concrete in the pouring cavity, thereby improving the uniformity and density of the fair-faced concrete in the pouring cavity.

[0028] In summary, this application includes at least one of the following beneficial technical effects: 1. During the process of injecting fair-faced concrete into the casting cavity, the grouting component slides while grouting, thereby injecting fair-faced concrete into various positions within the casting cavity. Furthermore, due to the overall vertical setting of the formwork, the diameter of the opening of the formwork is reduced. When fair-faced concrete is injected into the casting cavity through the opening, the uniformity of the distribution of fair-faced concrete within the casting cavity is improved, thus ensuring the prefabrication quality of the fair-faced concrete column. 2. When prefabricating fair-faced concrete columns, the bottom end of the stressed longitudinal reinforcement is inserted into the slot through the insertion hole. The first drive unit drives the movable plate to slide, and the movable plate drives the grouting component to slide. The grouting component slides and grouts at the same time. During this process, the stressed longitudinal reinforcement is inserted through the insertion hole. The movable plate supports the stressed longitudinal reinforcement, improves the stability of the stressed longitudinal reinforcement in the pouring cavity during the fair-faced concrete pouring process, and avoids the stressed longitudinal reinforcement from shaking or tilting. 3. After the fair-faced concrete has solidified and formed, the hydraulic rod extends and retracts, and the movable side mold corresponding to the hydraulic rod rotates accordingly. The movable side mold rotates in a direction away from the pouring cavity to separate from the formed fair-faced concrete column. The way the movable side mold rotates to demold makes the contact area between the movable side mold and the fair-faced concrete column gradually decrease, thereby reducing the demolding difficulty and making it easier to separate the movable side mold from the fair-faced concrete column. Attached Figure Description

[0029] Figure 1 This is a structural schematic diagram of the fair-faced concrete column in the embodiments of this application; Figure 2 This is a schematic diagram of the overall structure of a template for a precast fair-faced concrete column according to an embodiment of this application; Figure 3 This is a top view of a template for a precast fair-faced concrete column according to an embodiment of this application; Figure 4 This is a cross-sectional view of a template for a precast fair-faced concrete column according to an embodiment of this application; Figure 5 yes Figure 4 Enlarged view of section A.

[0030] Explanation of reference numerals in the attached drawings: 1. Bottom formwork platform; 2. Fixed side formwork; 3. Movable side formwork; 4. First driving component; 41. Hydraulic rod; 5. Grouting component; 51. Grouting chamber; 52. Grouting pipe; 6. Second driving component; 61. Movable plate; 62. First telescopic rod; 7. Slot; 8. Insertion hole; 9. First guide hole; 10. Top plate; 11. Fixed plate; 12. Support hole; 13. Second guide hole; 14. Nozzle; 15. First motor; 16. Gear; 17. Gear ring; 18. Second motor; 19. Lead screw; 20. Mounting plate; 21. Vibration motor; 22. Second telescopic rod; 23. Reinforcing longitudinal reinforcement; 24. Fair-faced concrete column. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0032] This application discloses a formwork for precast fair-faced concrete columns. (Refer to...) Figure 1 and Figure 2 The formwork for precast fair-faced concrete columns is used to form fair-faced concrete columns 24 with longitudinal reinforcing bars 23. It includes a bottom formwork platform 1, a fixed side formwork 2 on the bottom formwork platform 1, and multiple movable side formworks 3 on the bottom formwork platform 1. The multiple movable side formworks 3, the fixed side formwork 2, and the bottom formwork platform 1 together form a casting cavity with an open top. A first driving member 4 is provided on the bottom formwork platform 1. The first driving member 4 is used to drive the multiple movable side formworks 3 to move in a direction away from or close to the casting cavity. A grouting member 5 is slidably provided in the casting cavity. A second driving member 6 is provided on the fixed side formwork 2 to drive the grouting member 5 to slide along the length direction of the casting cavity. A slot 7 for inserting the longitudinal reinforcing bars 23 is provided on the bottom formwork platform 1.

[0033] Reference Figure 3Three movable side molds 3 are selected. The bottom ends of the three movable side molds 3 are all hinged to the bottom mold platform 1. One movable side mold 3 is set opposite to the fixed side mold 2 and abuts against the end face of the other two movable side molds 3 away from the fixed side mold 2. The side faces of one end of the other two movable side molds 3 abut against the end faces of both ends of the fixed side mold 2 respectively and clamp the fixed side mold 2 between them. The ends of the movable side molds 3 and the fixed side mold 2 abut against each other to prevent the fair water concrete in the pouring cavity from overflowing through the gap between the movable side mold 3 and the fixed side mold 2 or between the movable side molds 3. The first driving component 4 includes multiple hydraulic rods 41. Each movable side mold 3 has a corresponding hydraulic rod 41 on its outer side. One end of the hydraulic rod 41 is hinged to the bottom mold platform 1, and the other end is hinged to the corresponding movable side mold 3.

[0034] After the fair-faced concrete has solidified, the hydraulic rod 41 extends and retracts, causing the movable side mold 3 corresponding to the hydraulic rod 41 to rotate. The movable side mold 3 rotates outward in the direction away from the pouring cavity to detach from the formed fair-faced concrete column 24. The way the movable side mold 3 rotates to demold makes the contact area between the movable side mold 3 and the fair-faced concrete column 24 gradually decrease, thereby reducing the difficulty of demolding. When multiple movable side molds 3 rotate to demold, the movable side mold 3 opposite to the fixed side mold 2 is driven to rotate first, and then the movable side molds 3 at both ends of the fixed side mold 2 are driven to rotate simultaneously. This avoids the movable side mold 3 from contacting other movable side molds 3, avoids the generation of friction between the movable side molds 3, and prevents the rotation of the movable side mold 3 from being hindered.

[0035] Reference Figure 2 A vibrating element is slidably provided on the outer side of the fixed side mold 2. A third driving element is provided on the fixed side mold 2. The third driving element is used to drive the vibrating element to slide along the length direction of the casting cavity. The third driving element is a second motor 18 installed at the top of the outer side of the fixed side mold 2. The output shaft of the second motor 18 is vertically arranged and coaxially fixedly connected to a lead screw 19. A mounting plate 20 is fixedly connected to the lead screw 19 nut. The vibrating element is a vibration motor 21 installed on the mounting plate 20. The rotation output end of the vibration motor 21 is in contact with the outer wall of the fixed side mold 2.

[0036] During the grouting process, the second motor 18 drives the lead screw 19 to rotate while the grouting component 5 slides. The rotation of the lead screw 19 causes the mounting plate 20 to slide synchronously with the grouting component 5. During this process, the vibration motor 21 operates to vibrate the fair-faced concrete in the pouring cavity, thereby improving the uniformity and density of the fair-faced concrete in the pouring cavity.

[0037] Reference Figure 4 and Figure 5The second driving component 6 includes a movable plate 61 and a first driving part. The grouting component 5 is disposed on the movable plate 61. The first driving part is used to drive the movable plate 61 to slide along the length direction of the casting cavity. The movable plate 61 is provided with an insertion hole 8 corresponding to the position of the slot 7. The movable plate 61 is provided with first guide holes 9 on both sides. The first guide holes 9 on both sides of the movable plate 61 are respectively connected to the two ends of the insertion hole 8 and are flared outward in the direction away from the insertion hole 8. The stressed longitudinal rib 23 can be inserted into the insertion hole 8 through the first guide hole 9.

[0038] When prefabricating the fair-faced concrete column 24, the bottom end of the stressed longitudinal reinforcement 23 is inserted into the insertion hole 8 through the first guide hole 9, and then inserted into the slot 7 through the insertion hole 8. The first drive unit drives the movable plate 61 to slide, and the movable plate 61 drives the grouting component 5 to slide. The grouting component 5 grouts while sliding. During this process, the stressed longitudinal reinforcement 23 is partially inserted into the insertion hole 8. The movable plate 61 supports the stressed longitudinal reinforcement 23, thereby improving the stability of the stressed longitudinal reinforcement 23 in the pouring cavity during the fair-faced concrete pouring process.

[0039] Reference Figure 4 and Figure 5 A top plate 10 is slidably mounted on the fixed side mold 2. The first driving unit includes a vertically arranged first telescopic rod 62 installed between the top plate 10 and the movable plate 61. The first telescopic rod 62 is a multi-stage telescopic rod and is electrically controlled. The fixed end of the first telescopic rod 62 is fixedly connected to the top plate 10, and the movable end of the first telescopic rod 62 is fixedly connected to the movable plate 61. The telescopic movement of the first telescopic rod 62 drives the movable plate 61 to slide. The fixed side mold 2 is provided with a mechanism to drive the top plate 10 to slide along the length of the casting cavity. The second drive unit includes a fixed plate 11 installed inside the fixed side mold 2. A second telescopic rod 22 is installed on the fixed plate 11. The second telescopic rod 22 is an electrically controlled telescopic rod and is vertically arranged. A support hole 12 is opened on the top plate 10. A second guide hole 13 is opened on both sides of the top plate 10. The second guide holes 13 on both sides of the top plate 10 are respectively connected to the two ends of the support hole 12 and are flared outward in a funnel shape in the direction away from the support hole 12. The top of the stressed longitudinal rib 23 can be inserted into the support hole 12 through the second guide hole 13.

[0040] After the bottom end of the longitudinal reinforcement 23 is inserted into the slot 7, the top plate 10 is driven by the second telescopic rod 22 to slide in the direction close to the longitudinal reinforcement 23. The top end of the longitudinal reinforcement 23 is then inserted into the support hole 12. The joint cooperation of the slot 7 and the support hole 12 can fix both ends of the longitudinal reinforcement 23, improve the stability of the longitudinal reinforcement 23 in the pouring cavity during the pouring of fair-faced concrete, and prevent the longitudinal reinforcement 23 from shaking or tilting. After the fair-faced concrete has solidified, the top plate 10 can be driven by the second telescopic rod 22 to slide in the direction away from the longitudinal reinforcement 23. The longitudinal reinforcement 23 is then removed from the support hole 12, and the fair-faced concrete column 24 can be demolded subsequently.

[0041] Reference Figure 4 and Figure 5 The grouting component 5 includes a grouting chamber 51 disposed above the fixed side mold 2. A grouting pipe 52 communicating with the casting cavity is passed through the middle of the movable plate 61. A control valve (not shown in the figure) for controlling the opening and closing of the grouting pipe 52 is provided on the grouting pipe 52. The grouting pipe 52 is a corrugated pipe and communicates with the grouting chamber 51. Multiple nozzles 14 located in the casting cavity are provided on the grouting pipe 52. The spraying directions of the multiple nozzles 14 are different.

[0042] Grouting chamber 51 stores fair-faced concrete and can be connected to external fair-faced concrete. The fair-faced concrete in grouting chamber 51 is introduced into the pouring cavity through grouting pipe 52. Grouting pipe 52 delivers the fair-faced concrete in grouting chamber 51 to nozzles 14. Multiple nozzles 14 work together to spray fair-faced concrete into the pouring cavity. Since the spraying directions of multiple nozzles 14 are different, fair-faced concrete can be delivered to various positions in the pouring cavity. Since grouting pipe 52 is a corrugated pipe, when the movable plate 61 slides, grouting pipe 52 can adapt to the expansion and contraction, avoiding bending of grouting pipe 52 during the sliding of movable plate 61.

[0043] Reference Figure 4 and Figure 5 A first motor 15 is installed above the movable plate 61. A gear 16 is coaxially fixedly connected to the output shaft of the first motor 15. A gear ring 17, coaxial with the grouting pipe 52, is fixed on the outer wall of the lower end of the grouting pipe 52. The gear ring 17 meshes with the gear 16. When the grouting pipe 52 and the nozzle 14 work together to pour fair-faced concrete, the first motor 15 operates to drive the gear 16 to rotate. The gear 16 further drives the gear ring 17 to rotate, thereby rotating the grouting pipe 52. The fair-faced concrete sprayed into the pouring cavity through the nozzle 14 can thus rotate and be sprayed out, further expanding the spray coverage area of ​​the nozzle 14.

[0044] The implementation principle of a precast fair-faced concrete column template in this application embodiment is as follows: The template is set vertically as a whole. When precasting the fair-faced concrete column 24, the bottom end of the stressed longitudinal reinforcement 23 is inserted into the slot 7. The stressed longitudinal reinforcement 23 runs through the entire casting cavity. Multiple movable side molds 3 are erected. The multiple movable side molds 3, the fixed side molds 2, and the bottom mold platform 1 together form a casting cavity with an open top. At this time, the grouting component 5 is located at the bottom of the casting cavity. After that, fair-faced concrete is poured into the casting cavity through the grouting component 5. At the same time, the first telescopic rod 62 drives the movable plate 61 to slide upward along the length direction of the casting cavity. The fair-faced concrete in the grouting chamber 51 is grouted. In pipe 52, fair-faced concrete is delivered to the pouring cavity through nozzle 14. Nozzle 14 slides synchronously with movable plate 61, and fair-faced concrete is injected while the nozzle 14 slides. When the fair-faced concrete in the pouring cavity reaches the design elevation of fair-faced concrete column 24, the first telescopic rod 62 stops operating to allow the fair-faced concrete to solidify. After the fair-faced concrete has solidified, multiple movable side molds 3 are driven by hydraulic rod 41 to move away from the pouring cavity, thereby causing multiple movable side molds 3 to detach from the formed fair-faced concrete column 24. The fair-faced concrete column 24 is then driven out of the pouring cavity, thus completing the prefabrication of fair-faced concrete column 24.

[0045] The cooperation of the various components in the above process can complete the prefabrication of the fair-faced concrete column 24. During the process of injecting fair-faced concrete into the pouring cavity, the grouting component 5 slides while grouting, thereby injecting fair-faced concrete into various positions in the pouring cavity. Since the template is set vertically as a whole, the diameter of the opening of the template is reduced. When fair-faced concrete is injected into the pouring cavity through the opening, the uniformity of the distribution of fair-faced concrete in the pouring cavity is improved, thereby ensuring the prefabrication quality of the fair-faced concrete column 24.

[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 formwork for precast fair-faced concrete columns, used to form fair-faced concrete columns (24) with load-bearing longitudinal reinforcement (23), characterized in that: The system includes a bottom mold platform (1), on which a fixed side mold (2) is provided. Multiple movable side molds (3) are also provided on the bottom mold platform (1). The multiple movable side molds (3), the fixed side molds (2), and the bottom mold platform (1) together form a casting cavity with an open top. A first driving member (4) is provided on the bottom mold platform (1) to drive the multiple movable side molds (3) to move in a direction away from or near the casting cavity. A grouting component (5) is slidably disposed within the casting cavity. A second driving member (6) is provided on the fixed side mold (2) to drive the grouting component (5) to slide along the length direction of the casting cavity. A slot (7) for inserting a stressed longitudinal rib (23) is provided on the bottom mold platform (1). The second driving member (6) includes a movable plate (61) and a first driving part. The grouting component (5) is disposed on the movable plate (61), and the first driving part... The movable plate (61) is used to drive the movable plate (61) to slide along the length of the casting cavity. The movable plate (61) has a hole (8) corresponding to the position of the slot (7). The stressed longitudinal rib (23) passes through the hole (8). A top plate (10) is slidably mounted on the fixed side mold (2). The first driving part is disposed on the top plate (10). The fixed side mold (2) is provided with a tool to drive the top plate (10) to slide along the length of the casting cavity. The second driving part that slides is provided with a support hole (12) on the top plate (10), and the end of the stressed longitudinal rib (23) away from the slot (7) passes through the support hole (12); the grouting component (5) includes a grouting chamber (51) provided on one side of the fixed side mold (2), and a grouting pipe (52) communicating with the casting cavity is provided in the middle of the movable plate (61), and the grouting pipe (52) is a corrugated pipe and communicates with the grouting chamber (51).

2. The formwork for a precast fair-faced concrete column according to claim 1, characterized in that: The insertion hole (8) is connected to a first guide hole (9), which is located on the side of the movable plate (61) away from the bottom mold platform (1) and is flared outward.

3. The formwork for a precast fair-faced concrete column according to claim 1, characterized in that: The grouting pipe (52) is equipped with multiple nozzles (14) located in the casting cavity, and the spraying directions of the multiple nozzles (14) are different.

4. The formwork for a precast fair-faced concrete column according to claim 1, characterized in that: One end of the grouting pipe (52) is rotatably connected to the movable plate (61), and the other end is rotatably connected to the grouting chamber (51). The movable plate (61) is provided with a third driving part for driving the grouting pipe (52) to rotate.

5. The formwork for a precast fair-faced concrete column according to claim 4, characterized in that: The third drive unit includes a first motor (15) disposed on the side of the movable plate (61) away from the pouring cavity. A gear (16) is coaxially fixedly connected to the output shaft of the first motor (15). A gear ring (17) is coaxially fixed to the grouting pipe (52). The gear (16) meshes with the gear ring (17).

6. The formwork for a precast fair-faced concrete column according to claim 1, characterized in that: The movable side mold (3) is hinged to the bottom mold platform (1). The first driving member (4) includes a plurality of hydraulic rods (41). Each movable side mold (3) has a hydraulic rod (41) on the side away from the casting cavity. One end of the hydraulic rod (41) is hinged to the bottom mold platform (1), and the other end is hinged to the corresponding movable side mold (3).

7. The formwork for a precast fair-faced concrete column according to claim 1, characterized in that: A vibrating element is slidably provided on the side of the fixed side mold (2) away from the casting cavity. A third driving element is provided on the fixed side mold (2) to drive the vibrating element to slide along the length direction of the casting cavity.

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