A lightweight aggregate concrete PC component pouring mold and pouring process

Abstract

The present application relates to a lightweight aggregate concrete PC component pouring mold and pouring process, and to the field of concrete precast casting, including a bottom mold, a plurality of vertical molds connected up and down, and a sealing mold; the bottom mold is provided with at least one grouting interface; the vertical mold is provided as an annular frame with upper and lower openings, and vertical mold flanges are provided at the upper and lower openings, and adjacent vertical molds are connected by vertical mold flanges, and the bottom vertical mold is connected to the bottom mold by vertical mold flanges; the sealing mold is provided with exhaust holes, and the sealing mold is connected to the vertical mold flange. The pouring mold of the present application is provided with a grouting interface at the bottom mold position, and lightweight aggregate concrete is injected into the pouring mold from the bottom through the grouting interface, and the air in the pouring mold is discharged upward, and there is no need to vibrate the lightweight aggregate concrete, so that the lightweight aggregate is evenly distributed in the pouring mold, thereby improving the pouring quality of lightweight aggregate concrete precast components.

Description

Technical Field

[0001] The present application relates to the field of precast concrete casting, and in particular to a lightweight aggregate concrete (PC) component casting mold and casting process. Background Art

[0002] Lightweight aggregate concrete refers to concrete that uses lightweight aggregate, and its apparent density is not more than 1900kg / m3. The so-called lightweight aggregate is an aggregate used to reduce the mass of concrete and improve thermal effects, and its apparent density is lower than that of ordinary aggregate. Lightweight aggregate concrete has the characteristics of light weight, high strength, heat preservation and fire resistance, and has good deformation performance and low elastic modulus. Lightweight aggregate concrete is used in industrial and civil buildings and other projects. It can reduce the deadweight of the structure, save material consumption, improve the efficiency of component transportation and hoisting, reduce foundation load and improve the function of the building. It is suitable for high-rise and large-span buildings.

[0003] However, lightweight aggregate concrete PC components are light in weight and have good thermal insulation performance, which can save foundation costs and reduce resource use, and are the direction of development. However, during the pouring process, due to the lightness of the aggregate and the vibration, it is easy to cause the aggregate to float, resulting in the segregation of coarse and fine aggregates, and the pouring quality cannot be guaranteed. Summary of the invention

[0004] In order to improve the casting quality of lightweight aggregate concrete PC components and make the lightweight aggregate evenly distributed, the present application provides a lightweight aggregate concrete PC component casting mold and a casting process.

[0005] The lightweight aggregate concrete PC component pouring mold provided in this application adopts the following technical solution:

[0006] In the first aspect, the present application provides a lightweight aggregate concrete PC component casting mold, which adopts the following technical solution:

[0007] A lightweight aggregate concrete PC component pouring mold, comprising a bottom mold, a plurality of vertical molds connected up and down, and a sealing mold plate;

[0008] At least one grouting interface is provided on the bottom mold;

[0009] The vertical mold is configured as a ring frame with upper and lower openings, and vertical mold flanges are provided at the upper and lower openings. Adjacent vertical molds are connected by the vertical mold flanges, and the lowest vertical mold is connected to the bottom mold by the vertical mold flange.

[0010] The sealing plate is provided with an exhaust hole, and the sealing plate is connected to the vertical mold flange.

[0011] By adopting the above technical scheme, the pouring mold consists of a bottom mold, a vertical mold and a sealing mold. A grouting interface is arranged on the bottom mold. When pouring lightweight aggregate concrete, it is poured into the pouring mold from the grouting interface on the lower side. As the height of the lightweight aggregate concrete in the pouring mold gradually increases, the air in the pouring mold will be discharged through the exhaust hole until the pouring mold is filled. Because the air is discharged relatively cleanly, there is no need to vibrate the lightweight aggregate concrete, and the lightweight aggregate is more evenly distributed in the prefabricated components, thereby ensuring the pouring quality of the prefabricated components. A plurality of vertical molds are arranged, so that the height of the entire pouring mold can be adjusted to meet the casting requirements of prefabricated components of different heights and sizes.

[0012] Optionally, the bottom mold includes a bottom plate and a frame plate, the side plates of the frame plate are vertically fixed on the bottom plate, and the grouting interface is arranged on the frame plate.

[0013] By adopting the above technical solution, the bottom plate can increase the stability of the pouring mold. In the initial stage of installation of the steel cage, the frame plate is convenient for limiting and fixing the steel cage. The setting of the frame plate also makes it convenient to fix the grouting interface on the bottom mold.

[0014] Optionally, a connecting pipe head is provided at the grouting interface, one end of the connecting pipe head is threadedly connected to the frame plate position corresponding to the grouting interface, and the other end is connected to the concrete material pipe.

[0015] By adopting the above technical solution, the grouting interface is detachably connected by a connecting pipe head. During the maintenance stage of the prefabricated component, the connecting pipe head can be removed to clean up the excess concrete at the grouting interface, thereby facilitating the prefabricated component to be separated from the bottom mold.

[0016] Optionally, a transverse groove connecting the inside and outside of the vertical mold is formed on the side plate of the vertical mold, and a partition is inserted into the transverse groove, and the partition can be inserted into the vertical mold or pulled out.

[0017] By adopting the above technical scheme, the side plates of the vertical formwork are provided with transverse grooves, in which partitions are inserted. The partitions can be inserted into the vertical formwork and abut against the steel cage. During the pouring process of lightweight aggregate concrete, the lightweight aggregate in the lower layer is blocked from moving upward, so that the lightweight aggregate can be evenly distributed in the pouring mold, thereby improving the casting quality of lightweight aggregate concrete components. The partitions can be pulled out of the vertical formwork, and the occupied space is supplemented by slurry, thereby ensuring the completion of the lightweight aggregate concrete precast components and facilitating demoulding.

[0018] Optionally, a support plate is provided outside the long side plate of the vertical mold, the support plate is arranged below the transverse groove, and the partition plate is slidably connected to the support plate.

[0019] By adopting the above technical solution, the support plate is used to support the partition, thereby preventing the partition from falling and ensuring that the partition can translate stably.

[0020] Optionally, a limiting member is provided on a side of the support plate away from the vertical mold, and when the partition plate abuts against the limiting member, the side of the partition plate located in the vertical mold is flush with the inner wall of the side plate of the vertical mold.

[0021] By adopting the above technical solution, the limiter arranged on the support plate can limit the moving distance of the partition and prevent the partition from sliding out of the vertical mold. The partition is stuck on the support plate and will not fall down, which facilitates the transportation and installation of the vertical mold.

[0022] Optionally, the vertical mold includes two single mold plates that are arranged opposite to each other, the two ends of the two single mold plates are abutted against each other, and are fixedly connected by a connecting piece arranged on the outside of the vertical mold.

[0023] By adopting the above technical solution, the vertical mold is composed of two single molds, and the two single molds are detachably connected, which is convenient for closing the mold on the steel cage and also convenient for removing the mold after the pouring is completed.

[0024] Optionally, a plurality of guide rods are provided on the bottom mold, wherein the guide rods are perpendicular to the bottom plate and are detachably connected to the bottom mold, and the guide rods pass through the vertical mold flange and the sealing mold plate in sequence upward and are detachably connected to the sealing mold plate.

[0025] By adopting the above technical solution, a guide rod is arranged on the bottom mold, and the vertical mold is inserted downward from the upper end of the steel cage during installation. The guide rod guides the downward movement direction of the vertical mold, which can increase the installation speed of the vertical mold and guide the flanges between the vertical mold and the bottom mold, the vertical mold and the vertical mold, and the closing mold and the vertical mold to be quickly aligned and installed.

[0026] Optionally, the bottom plate is provided with an insert tube axially perpendicular to the bottom plate, and the lower end of the guide rod is inserted into the insert tube;

[0027] The top of the frame plate is provided with a bottom mold flange connected to the vertical mold flange, the guide rod passes through the bottom mold flange upwards, and is threadedly connected with a nut abutting against the lower surface of the bottom mold flange;

[0028] The upper end of the guide rod passes through the sealing plate and is threadedly connected with a nut abutting against the upper surface of the sealing plate.

[0029] By adopting the above technical solution, the installation and disassembly of the guide rod is convenient. At the same time, the guide rod is connected between the bottom mold, the vertical mold and the sealing mold plate, so that the three are connected as a whole. The bottom mold, the vertical mold and the sealing mold plate can be connected more firmly, and the tightness of the connection between the three can also be adjusted.

[0030] In the second aspect, the present application provides a lightweight aggregate concrete PC component pouring process, which adopts the following technical solution:

[0031] A lightweight aggregate concrete PC component pouring process comprises the following steps:

[0032] Tie up the steel cage and fix the embedded pipelines and embedded parts on the steel cage;

[0033] Fix the bottom mold, open the vertical mold, install the steel cage in the bottom mold, close the vertical mold and fix it upwards in sequence, keeping the upper opening of the vertical mold open;

[0034] Pour lightweight aggregate into the mold and cover the upper opening of the vertical mold with a sealing plate;

[0035] Move the partition toward the mold so that it rests on the steel cage and the lightweight aggregate is layered;

[0036] Mix fine aggregate and cement slurry, connect the concrete delivery pipe to the grouting interface of the bottom mold, and inject the concrete into the mold through pressure injection from the grouting interface to soak and submerge the lightweight aggregate from bottom to top;

[0037] The partition is pulled out of the mold, and the slurry fills the space occupied by the partition in the mold;

[0038] The air is gradually exhausted from the vent holes on the sealing template until fine aggregate and cement slurry begin to overflow from the vent holes, and then grouting into the mold is stopped;

[0039] Carry out component maintenance, remove the mold after maintenance is completed, and complete component prefabrication.

[0040] In summary, the present application includes at least one of the following beneficial technical effects:

[0041] 1. The pouring mold of the present application is provided with a grouting interface at the bottom mold position, and lightweight aggregate concrete is injected into the pouring mold from the bottom through the grouting interface to discharge the air in the pouring mold upward. There is no need to vibrate the lightweight aggregate concrete, so that the lightweight aggregate is evenly distributed in the pouring mold, thereby improving the pouring quality of lightweight aggregate concrete prefabricated components.

[0042] 2. In the present application, partitions and support plates are arranged on the mold. The partitions can be inserted into the mold to layer the lightweight aggregate, which effectively alleviates the floating of the lightweight aggregate and makes the lightweight aggregate more evenly distributed in the casting mold. At the same time, the partitions can be removed from the mold to ensure the integrity of the prefabricated components and facilitate the separation of the prefabricated components from the mold.

[0043] 3. The lightweight aggregate concrete precast component pouring process in the present application is to first pour lightweight aggregate into the pouring mold, and then introduce fine aggregate and cement slurry into the mold from the bottom of the pouring mold, gradually covering the lightweight aggregate upwards, so that the lightweight aggregate is gradually dispersed into the pouring mold, thereby ensuring the uniform distribution of the lightweight aggregate. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the overall structure of the injection mold according to an embodiment of the present application.

[0045] Figure 2It is a schematic diagram of the structure of the bottom mold in the embodiment of the present application.

[0046] Figure 3 It is a structural schematic diagram of the vertical mold in the embodiment of the present application.

[0047] Figure 4 It is a schematic diagram of the internal structure of the mold in the embodiment of the present application.

[0048] Explanation of the accompanying drawings: 1. bottom mold; 11. grouting interface; 12. bottom plate; 13. frame plate; 14. connecting pipe head; 15. insert pipe; 16. bottom mold flange; 2. vertical mold; 20. single mold plate; 21. vertical mold flange; 22. horizontal groove; 23. partition; 24. support plate; 25. limit piece; 26. opening groove; 3. sealing mold plate; 31. exhaust hole; 4. guide rod. DETAILED DESCRIPTION

[0049] The following is combined with Figure 1-4 This application is described in further detail.

[0050] The present application embodiment discloses a lightweight aggregate concrete PC component casting mold. Figure 1 and 2 The pouring mold includes a bottom mold 1 with an opening on the upper side, and the bottom mold 1 includes a bottom plate 12 and a frame plate 13. In this embodiment, the lightweight aggregate concrete precast component is configured as a rectangular slat component, the bottom plate 12 is configured as a rectangular flat plate, and can be fixed to the working ground by pre-buried anchor bolts, and the frame plate 13 is configured as a rectangular frame, and its four side plates are vertically welded and fixed to the bottom plate 12.

[0051] Two grouting interfaces 11 are provided on a long side plate of one side of the frame plate 13. The grouting interfaces 11 are set as circular holes with threads on the hole wall. The grouting interfaces 11 are connected to connecting pipe heads 14 through threads. External threads are provided on the outer walls of both ends of the connecting pipe heads 14, so that one end of the connecting pipe head 14 is connected to the grouting interface 11, and the other end is detachably connected to the output pipe of the concrete delivery pump, and concrete slurry can be delivered to the bottom mold 1 through the connecting pipe head 14.

[0052] Reference Figure 1 The outer side of the upper opening of the frame plate 13 is connected to a bottom mold flange 16, and a circle of connecting holes is provided on the bottom mold flange 16. Four inserts 15 axially perpendicular to the upper surface of the bottom plate 12 are welded at the four top corners of the bottom plate 12. The inserts 15 are set as round tubes, and a guide rod 4 is inserted into the inserts 15. The upper and lower ends of the guide rod 4 are provided with threads. The lower end of the guide rod 4 passes through the round hole on the bottom mold flange 16 and is connected with a nut. The end of the guide rod 4 abuts against the bottom of the insert 15, and the nut abuts against the lower surface of the bottom mold flange 16, fixing the guide rod 4 and the bottom mold 1 together.

[0053] Reference Figure 1The bottom mold 1 is detachably connected to a vertical mold 2, and the number of the vertical mold 2 is at least one, which is sequentially connected upward. In this embodiment, two vertical molds 2 with the same structure are arranged.

[0054] Reference Figure 1 and 3 The vertical mold 2 includes two relatively arranged single mold plates 20. The two single mold plates 20 have the same structure and are both arranged as metal plates with a U-shaped cross-section. The end faces of the side plates at both ends of the two single mold plates 20 are abutted against each other, and a space with a cross-sectional shape identical to the cross-sectional shape of the inner cavity of the frame plate 13 is surrounded in the middle. Connectors are arranged on the outer sides of the side plates at both ends of the two single mold plates 20. The connecting members in this embodiment are strip plates. The strip plates of the two single mold plates 20 are fitted together and fixedly connected by two upper and lower bolts. The two single mold plates 20 are detachably connected, which is convenient for mold closing on the steel cage. At the same time, it is also convenient for demolding after the pouring is completed.

[0055] The vertical mold 2 surrounded by two single mold plates 20 is open at both ends, and the outer sides of the two end openings are fixedly connected with vertical mold flanges 21 forming a rectangular ring. The vertical mold flange 21 has the same inner and outer contour size as the bottom mold flange 16. The lower vertical mold 2 is bolted and sealed to the bottom mold flange 16 through the vertical mold flange 21, and the two adjacent vertical molds 2 are connected and sealed through the vertical mold flange 21.

[0056] The long plates on both sides of the vertical formwork 2 are provided with transverse grooves 22 that penetrate into the interior of the vertical formwork 2. The transverse grooves 22 extend to both ends of the long plates and are parallel to the vertical formwork flanges 21 at the upper and lower ends of the vertical formwork 2. A partition 23 is inserted into the transverse groove 22. The partition 23 is set as a long strip with the same length as the transverse groove 22. The partition 23 can be inserted into the interior of the vertical formwork 2 or pulled out from the interior of the vertical formwork 2. When the partition 23 is inserted into the vertical formwork 2, the side abuts against the steel cage installed in the vertical formwork 2. When the partition 23 is pulled out from the vertical formwork 2, the side of the partition 23 located in the vertical formwork 2 is flush with the inner wall of the side plate of the vertical formwork 2. Through the movable partition 23, the interior of the pouring mold can be layered to reduce the floating amount of lightweight aggregate at the bottom.

[0057] Support plates 24 are provided on the outside of the long plates on both sides of the vertical mold 2. The support plates 24 are arranged below the transverse groove 22 and have the same length as the transverse groove 22. The partition 23 slides in contact with the support plates 24, and the support plates 24 hold up the partition 23 to prevent the partition 23 from falling; at the same time, a limiting member 25 is provided on the side of the support plate 24 away from the vertical mold 2. In this embodiment, the limiting member 25 is configured as a strip plate welded on the upper side of the support plate 24, blocking the outer end side of the partition 23. When the partition 23 abuts against the limiting member 25, one side of the partition 23 located in the vertical mold 2 is flush with the inner wall of the side plate of the vertical mold 2; in order to facilitate the movement of the partition 23, a long strip pushing plate is provided on the upper side of the end of the partition 23 abutting against the limiting member 25, which is convenient for pushing the partition 23, and the height of the pushing plate is higher than the limiting member 25.

[0058] Reference Figure 3 The two long side plates of the vertical mold flange 21 have opening grooves 26 with opening directions opposite to each other at both ends of the outer side. The opening groove 26 is U-shaped. The guide rod 4 is inserted into the opening groove 26 and abuts against the bottom of the opening groove 26. When disassembling, the guide rod 4 can be translated and removed from the opening groove 26.

[0059] Reference Figure 1 The upper opening of the uppermost vertical mold 2 is detachably fixed with a sealing mold plate 3. The sealing mold plate 3 is set as a rectangular plate with the same outer contour size as the outer contour size of the vertical mold flange 21. A circle of connecting holes is provided on the outer circle of the sealing mold plate 3, and the sealing mold plate 3 is connected to the vertical mold flange 21 through bolts penetrated in the connecting holes. Three exhaust holes 31 arranged in a row are provided on the sealing mold plate 3. The exhaust holes 31 correspond to the position of the cavity inside the vertical mold 2 and are used to exhaust the air in the cavity. The upper end of the guide rod 4 penetrates the sealing mold plate 3 and is exposed. The upper end of the guide rod 4 is threadedly connected with a nut, which abuts against the upper surface of the sealing mold plate 3 to further fix the bottom mold 1, the vertical mold 2 and the sealing mold plate 3.

[0060] It should also be emphasized that in order to facilitate the installation and transportation of the bottom mold 1 , the vertical mold 2 and the closing mold 3 , a hoisting structure is provided on the bottom mold 1 , the vertical mold 2 and the closing mold 3 .

[0061] The implementation principle of a lightweight aggregate concrete PC component pouring mold in the embodiment of the present application is as follows: when assembling the mold, first fix the bottom mold 1 on the working surface and fix it to ensure the stability of the mold foundation; complete the assembly of two single mold plates 20 on site to form a complete vertical mold 2; insert the guide rod 4 into the circular hole of the bottom mold flange 16, screw the nut on the lower end of the guide rod 4, insert the lower end of the guide rod 4 into the insert pipe 15, and the end is tightly pressed against the bottom of the insert pipe 15, and the position of the nut is adjusted upward until it abuts against the bottom mold flange 16 and cannot move upward further. ; Lower the vertical mold 2 to the bottom mold 1 in the direction in which the four open grooves 26 correspond to the upper and lower positions of the four guide rods 4, align the connecting holes of the bottom mold flange 15 and the vertical mold flange 21, and fix them with bolts to complete the installation of the two vertical molds; lower the sealing mold plate 3 in the direction in which the circular holes correspond to the upper and lower positions of the guide rods 4, and bolt the sealing mold plate 3 to connect the sealing mold plate 3 to the vertical mold flange 21. Connect the nuts on the guide rods 4 until the nuts abut against the sealing mold plate 3 and cannot move down. The assembly of the pouring mold is completed. When disassembling the mold, proceed in the reverse order.

[0062] The embodiment of the present application also discloses a lightweight aggregate concrete PC component pouring process.

[0063] Reference Figure 1 and 4 , the infusion process includes the following steps:

[0064] S1. Tie up the steel cage outside the site and fix the embedded pipelines and embedded parts on the steel cage;

[0065] S2, fix the bottom mold 1, open the vertical mold 2, install the steel cage in the bottom mold 1, close the vertical mold 2 and fix it upward in sequence, keeping the opening on the vertical mold 2 open; of course, in this step, the bottom mold 1 and the vertical mold 2 can be assembled first, and then the steel cage can be directly lowered into the mold;

[0066] S3, pour the lightweight aggregate into the casting mold to half the height of the mold, cover the sealing mold plate 3 on the upper opening of the vertical mold 2 and fix it;

[0067] S4, move the partition 23 toward the mold so that the partition 23 is against the steel cage, and the partition 23 will layer the lightweight aggregate;

[0068] S5, mix fine aggregate and cement slurry, connect the concrete delivery pipe to the grouting interface 11 of the bottom mold 1, and inject the slurry into the mold by applying pressure from the outside of the grouting interface 11, so that the slurry penetrates and submerges the light aggregate from bottom to top, and gradually pushes the light aggregate upward, so that the light aggregate is evenly dispersed in the mold, and the air in the mold is gradually discharged from the exhaust hole 31;

[0069] S6. When the grouting distance from the sealing template is less than 5 cm, the partition 23 is pulled out of the mold, and the slurry fills the space occupied by the partition 23 in the mold;

[0070] S7, continue grouting, and continue to exhaust air from the exhaust holes 31 on the sealing template 3 until fine aggregate and cement slurry begin to overflow from the exhaust holes 31, and then stop grouting into the mold;

[0071] S8, perform component maintenance. During the maintenance process, the connecting pipe head 14 on the bottom mold 1 needs to be removed, and the concrete residue at the grouting interface 11 needs to be cleaned. After the maintenance is completed, the mold is removed to complete the component prefabrication.

[0072] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lightweight aggregate concrete PC component pouring mold, characterized by: It comprises a bottom mold (1), a plurality of vertical molds (2) connected up and down, and a sealing mold plate (3); At least one grouting interface (11) is provided on the bottom mold (1); The vertical mold (2) is configured as a ring frame with upper and lower openings, and vertical mold flanges (21) are provided at the upper and lower openings. Adjacent vertical molds (2) are connected via the vertical mold flanges (21), and the bottom vertical mold (2) is connected to the bottom mold (1) via the vertical mold flange (21); The sealing plate (3) is provided with an exhaust hole (31), and the sealing plate (3) is connected to the mold flange (21); A transverse groove (22) is provided on the side plate of the vertical mold (2) and connects the inside and outside of the vertical mold (2). A partition (23) is inserted into the transverse groove (22). The partition (23) can be inserted into the vertical mold (2) or pulled out. The vertical mold (2) comprises two single mold plates (20) arranged opposite to each other, the two single mold plates (20) are butted against each other at two ends and are fixedly connected via a connecting piece arranged on the outside of the vertical mold (2).

2. A lightweight aggregate concrete PC component pouring mold according to claim 1, characterized in that: The bottom mold (1) comprises a bottom plate (12) and a frame plate (13), the side plates of the frame plate (13) are vertically fixed on the bottom plate (12), and the grouting interface (11) is arranged on the frame plate (13).

3. A lightweight aggregate concrete PC component pouring mold according to claim 2, characterized in that: A connecting pipe head (14) is provided at the grouting interface (11); one end of the connecting pipe head (14) is threadedly connected to a position of the frame plate (13) corresponding to the grouting interface (11), and the other end is connected to a concrete material pipe.

4. The lightweight aggregate concrete PC component pouring mold according to claim 1, characterized in that: A support plate (24) is arranged outside the long side plate of the vertical mold (2), the support plate (24) is arranged below the transverse groove (22), and the partition plate (23) is slidably connected to the support plate (24).

5. A lightweight aggregate concrete PC component pouring mold according to claim 4, characterized in that: A limiting member (25) is provided on the side of the support plate (24) away from the vertical mold (2), and when the partition plate (23) abuts against the limiting member (25), the side of the partition plate (23) located inside the vertical mold (2) is flush with the inner wall of the side plate of the vertical mold (2).

6. A lightweight aggregate concrete PC component pouring mold according to claim 2, characterized in that: A plurality of guide rods (4) are provided on the bottom mold (1), the guide rods (4) are perpendicular to the bottom plate (12) and are detachably connected to the bottom mold (1), and the guide rods (4) pass through the vertical mold flange (21) and the sealing mold plate (3) in sequence upwards and are detachably connected to the sealing mold plate (3).

7. A lightweight aggregate concrete PC component pouring mold according to claim 6, characterized in that: The bottom plate (12) is provided with an insertion tube (15) axially perpendicular to the bottom plate (12), and the lower end of the guide rod (4) is inserted into the insertion tube (15); A bottom mold flange (16) connected to the vertical mold flange (21) is arranged on the top of the frame plate (13); the guide rod (4) passes through the bottom mold flange (16) upwards and is threadedly connected to a nut abutting against the lower surface of the bottom mold flange (16); The upper end of the guide rod (4) passes through the sealing plate (3) and is threadedly connected to a nut abutting against the upper surface of the sealing plate (3).

8. A lightweight aggregate concrete PC component pouring process, characterized in that: Applicable to the lightweight aggregate concrete PC component pouring mold according to any one of claims 1 to 7, the process comprises the following steps: Tie up the steel cage and fix the embedded pipelines and embedded parts on the steel cage; Fix the bottom mold (1), open the vertical mold (2), install the steel cage in the bottom mold (1), close the vertical mold (2) and fix it upwards in sequence, keeping the upper opening of the vertical mold (2) open; Pour lightweight aggregate into the mold and cover the upper opening of the vertical mold (2) with a sealing plate (3); Moving the partition plate (23) toward the mold so that the partition plate (23) is pressed against the steel cage to separate the lightweight aggregate into layers; Mix fine aggregate and cement slurry, connect a concrete delivery pipe to the grouting interface (11) of the bottom mold (1), and inject the concrete into the mold through the grouting interface (11) by pressure grouting to soak and submerge the lightweight aggregate from bottom to top; Pulling the partition (23) out of the mold, so that the slurry fills the space occupied by the partition (23) in the mold; The air is gradually exhausted from the exhaust holes (31) on the sealing mold plate (3) until fine aggregate and cement slurry begin to overflow from the exhaust holes (31), and grouting into the mold is stopped; Carry out component maintenance, remove the mold after maintenance is completed, and complete component prefabrication.

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