Pouring mold for pouring forming of solid square pile and forming method

Abstract

The invention discloses a pouring mold for pouring forming of a solid square pile and a forming method, and belongs to the field of pouring molds. A pouring mold for solid square pile pouring forming comprises an upper mold body and a lower mold body, the upper mold body and the lower mold body are each internally provided with a forming cavity, the pouring mold further comprises a positioning rod fixed to the top of the upper mold body and the top of the lower mold body, and the positioning rod is used for conducting penetrating positioning on the upper mold body and the lower mold body; the top of the upper die and the lower die are fixed; the pouring mold can be quickly disassembled and assembled, the problem that time and labor are wasted when multiple sets of bolts are disassembled is solved, pre-tightening treatment can be conducted in advance when the positioning rods are connected, the problem that hand bearing installation is tedious is solved, meanwhile, pre-tightening treatment can be conducted in advance when the positioning rods are connected, the problem that hand bearing installation is tedious is solved, and the production efficiency is improved. And therefore, the pouring mold can be assembled more quickly and conveniently in the later period, and the reliability and efficiency of the pouring mold are further improved.

Description

Technical Field

[0001] The invention relates to the technical field of casting moulds, and in particular to a casting mould and a forming method for casting and forming solid square piles. Background Art

[0002] Solid square pile is a new type of high-performance concrete prefabricated component. The solid square pile has a large surface area and is square or polygonal. The repose angle between the pile body and the soil in the soil layer is much larger than that of the circular surface. Solid square piles can obtain greater bearing capacity than pipe piles under the same geological conditions. Square piles can be preferred under the same design bearing capacity. The theoretical calculated shear resistance of square piles is 2-3 times that of the same pipe piles. The shape of square piles makes it easier to develop non-welded quick connectors, which can achieve all-weather construction and faster construction. Because of the above excellent properties of concrete solid square piles, they are widely used in water conservancy construction. The manufacture of concrete solid square piles is completed through molds. The mold rotates at high speed on the centrifuge to form the concrete along the square inner cavity of the mold, and finally centrifuges it into concrete hollow square piles. Then the mold is tilted and poured with micro-expansive concrete (strength not less than C30). When the concrete overflows from the overflow port, it is blocked and placed flat in the steaming tank for steaming for 6 hours. After the curing is completed, the square piles are transferred out for demoulding to obtain the formed solid square piles.

[0003] As in the prior art, the Chinese patent authorization number is CN111745793A, the application date is: 2020-06-30, and the name is a concrete hollow square pile forming mold, comprising an upper mold body and a lower mold body. After the upper mold body and the lower mold body are molded together, the upper mold body and the lower mold body are hollow tubes with a square inner cavity and openings at both ends. Semicircular running wheels that match each other are provided on the outside of the upper mold body and the lower mold body. A locking mechanism for locking the upper mold body and the lower mold body is provided at the mold joint of the upper mold body and the lower mold body. The locking mechanism includes a bracket, a rotating shaft, a locking rod and a locking assembly. The bracket is connected under the lower mold connecting plate, and the bracket is rotatably connected to the rotating shaft. The rotating shaft is fixedly connected to one end of the locking rod, and the locking assembly is connected to the other end of the locking rod. The upper mold connecting plate and the lower mold connecting plate are provided with a receiving groove for accommodating the locking rod. The locking mechanism is also provided with a driving mechanism for driving the locking rod to embed into the receiving groove or away from the receiving groove. The present application improves the efficiency of fastening and disassembling the upper mold body and the lower mold body, saves time and effort, and the disassembled fasteners are not easy to fall off or lose, while also improving the accuracy of the mold.

[0004] However, the above patent still has the disadvantage that when the upper and lower molds are closed, they are connected by bolts included in the locking mechanism. Since the multiple sets of bolts cannot be quickly disassembled and assembled, it is easy to cause the multiple sets of bolts to be time-consuming and labor-intensive when disassembling and assembling, further reducing the reliability and efficiency of the casting mold. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems in the prior art and to propose a casting mold for casting and forming solid square piles.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A casting mold for casting and forming solid square piles, including an upper mold and a lower mold, wherein the upper mold and the lower mold are both provided with a molding cavity, and further comprising: a positioning rod fixed at the top of the upper mold and the lower mold, wherein the positioning rod is used for penetrating and positioning between the upper mold and the lower mold; a limiting mechanism fixed at the top of the upper mold and the lower mold, and used for clamping inside the positioning rod for limiting; a pre-tightening mechanism fixed at the top of the upper mold and the lower mold, and used for pre-tightening the positioning rod when penetrating; and a knocking mechanism arranged directly above the limiting mechanism, and used for knocking and vibrating the upper mold and the lower mold when disassembling.

[0007] Preferably, the limiting mechanism includes a limiting shell respectively fixed on the upper mold and the lower mold, the inner wall of the limiting shell is rotatably connected to a rotating shaft through a bearing, a cam is fixedly connected to the surface of the rotating shaft, a plug-in component is attached to the surface of the cam, a plug-in groove is opened inside the positioning rod, and the end of the plug-in component passes through the limiting shell and is plugged into the plug-in groove.

[0008] Preferably, the pre-tightening mechanism includes fixed blocks respectively fixed on the upper mold and the lower mold, the interior of the fixed block is fixedly connected with an extrusion spring, the end of the extrusion spring is fixedly connected with an arc-shaped plug block, the surface of the positioning rod is provided with a plug hole, and the end of the arc-shaped plug block passes through the plug hole.

[0009] Preferably, the knocking mechanism includes a rotating rod fixed on the top of the rotating shaft, one end of the rotating rod is fixedly connected to a knocking rod, the side wall of the knocking rod is fixedly connected to a knocking head, a vibration rod is arranged on the same horizontal plane as the knocking head, and the vibration rod is respectively fixedly connected to the side walls of the upper mold and the lower mold.

[0010] Preferably, the knocking mechanism also includes two limit blocks fixed on the top of the limit shell, and the surfaces of the two limit blocks are fixedly connected to magnets. The limit block on the right is located above the rotating rod for limiting, and the limit block on the left is located below the rotating rod for limiting.

[0011] Preferably, an extension rod is slidably provided on the inner wall of the rotating rod, a connecting screw rod is penetrated and connected to the top of the rotating rod, and a surface of the extension rod is provided with a plurality of threaded holes threadably connected to the connecting screw rod.

[0012] Preferably, the plug-in assembly comprises a plug-in block sliding on the inner wall of the limiting housing, one end of the plug-in block is fixedly connected to an arc-shaped top block, and the surface of the arc-shaped top block is fitted on the cam.

[0013] Preferably, a spring tube is fixedly connected to the side wall of the arc-shaped top block, and an end of the spring tube is fixedly connected to the inner wall of the limiting shell.

[0014] Preferably, an ejection spring is fixedly connected to the surface of the positioning rod, and the other end of the ejection spring is sleeved on the surface of the positioning rod.

[0015] A method for forming a casting mold for casting a solid square pile mainly comprises the following steps: S1. When in use, first cut the steel bars of appropriate length according to the pile length and the reserved length at both ends, tie the steel cage according to the drawing size, select the end plate of the size corresponding to the solid square pile, align the end plate of the solid square pile head with the ends of the steel cage and embed them tightly; S2, transfer the steel cage to the cleaned upper mold and lower mold coated with an isolation agent, then close the upper mold and the lower mold, pour concrete, and after pouring, transfer the closed upper mold and the lower mold to the tensioning table for tensioning. After tensioning, move them to the centrifuge for centrifugation, and transfer the formed square piles to the steam curing tank for steam curing for one hour; S3. After the concrete has initially set and has a certain strength, the upper and lower molds are tilted and poured with micro-expansion concrete. When the concrete overflows from the overflow port, it is blocked and placed flat in the steam curing tank for further steam curing for six hours. After the curing is completed, the square pile is removed and demoulded to finally obtain a formed solid square pile. Compared with the prior art, the present invention provides a casting mold for casting solid square piles, which has the following beneficial effects: 1. The casting mold for casting and forming solid square piles can be easily disassembled through the cooperation between the limit shell, the rotating shaft, the cam, the plug-in assembly and the plug-in slot. Through this setting, the casting mold can be quickly disassembled and assembled, avoiding the time-consuming and labor-intensive disassembly and assembly of multiple sets of bolts, and further improving the reliability and efficiency of the casting mold.

[0016] 2. The casting mold for the solid square pile casting can be inserted into the positioning rod through the cooperation between the fixed block, the extrusion spring, the arc plug block and the plug hole. Through this setting, the positioning rod can be pre-tightened in advance when connected, which reduces the cumbersome problem of hand support installation, and facilitates the later assembly of the casting mold more quickly and conveniently. 3. The casting mold for casting and forming solid square piles can knock and vibrate the surface of the casting mold during disassembly through the cooperation between the rotating rod, the knocking rod, the knocking head, the vibration rod and the limit block. Through this setting, the solid square piles formed in the casting mold can be better separated under the knocking and vibration force, preventing the solid square piles from being stuck to the mold during casting and difficult to separate, thereby further improving the work efficiency of disassembling the casting mold.

[0017] The parts not involved in the device are the same as the prior art or can be implemented by the prior art. The present invention realizes the rapid disassembly and assembly of the casting mold, avoids the time-consuming and labor-intensive disassembly of multiple sets of bolts, and can pre-tighten the positioning rod when connected in advance, reducing the cumbersome installation of the hand support. At the same time, the positioning rod can be pre-tightened when connected in advance, reducing the cumbersome installation of the hand support, thereby facilitating the later assembly of the casting mold more quickly and conveniently, and further improving the reliability and efficiency of the casting mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a casting mold for casting and forming a solid square pile proposed by the present invention; Figure 2 This is a schematic diagram of the split structure of the upper mold and the lower mold of a casting mold for casting and forming a solid square pile proposed by the present invention; Figure 3 This is a schematic diagram of the structure of a limiting mechanism of a casting mold for casting and forming a solid square pile proposed by the present invention; Figure 4 This is a schematic diagram of the structure of a pre-tightening mechanism of a casting mold for casting a solid square pile proposed by the present invention; Figure 5 This is a schematic diagram of the truncated structure of an upper mold and a lower mold of a casting mold for casting and forming a solid square pile proposed by the present invention; Figure 6 A casting mold for casting a solid square pile proposed by the present invention Figure 5 The enlarged structural diagram at A in the middle; Figure 7 This is a schematic diagram of the structure of a knocking mechanism of a casting mold for casting a solid square pile proposed by the present invention; Figure 8 The present invention is a schematic diagram of the structure of a plug-in assembly of a casting mold for casting and forming solid square piles.

[0019] In the figure: 1. upper mold; 2. lower mold; 3. molding cavity; 4. positioning rod; 5. limiting mechanism; 51. limiting shell; 52. rotating shaft; 53. cam; 54. plug-in assembly; 541. plug-in block; 542. arc-shaped ejector block; 543. spring cylinder; 55. plug-in slot; 6. pre-tightening mechanism; 61. fixing block; 62. extrusion spring; 63. arc-shaped plug-in block; 64. plug-in hole; 7. knocking mechanism; 71. rotating rod; 72. knocking rod; 73. knocking head; 74. vibration rod; 75. limiting block; 76. magnet; 77. extension rod; 78. connecting screw; 79. threaded hole; 8. ejector spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In one embodiment, reference Figure 1-Figure 8 A casting mold for casting and forming a solid square pile comprises an upper mold 1 and a lower mold 2, wherein a molding cavity 3 is provided inside the upper mold 1 and the lower mold 2, and further comprises: a positioning rod 4 fixed at the top of the upper mold 1 and the lower mold 2, and the positioning rod 4 is used for penetrating and positioning between the upper mold 1 and the lower mold 2; a limiting mechanism 5 fixed at the top of the upper mold 1 and the lower mold 2, and used for clamping in the positioning rod 4 for limiting; a pre-tightening mechanism 6 fixed at the top of the upper mold 1 and the lower mold 2, and used for pre-tightening the positioning rod 4 when penetrating; a knocking mechanism 7 arranged just above the limiting mechanism 5, and used for knocking and vibrating the upper mold 1 and the lower mold 2 when disassembling; an ejection spring 8 is fixedly connected to the surface of the positioning rod 4, and the other end of the ejection spring 8 is sleeved on the surface of the positioning rod 4.

[0023] By adopting such a scheme, when the upper mold 1 and the lower mold 2 are closed, the tied steel cage can be placed conveniently through the molding cavity 3, and then the positioning rod 4 is used to position the upper mold 1 and the lower mold 2 when the upper mold 1 and the lower mold 2 are closed, and then the top of the positioning rod 4 can be locked by the limiting mechanism 5, so that the upper mold 1 and the lower mold 2 can be quickly assembled or disassembled, and under the setting of the pre-tightening mechanism 6, the positioning rod 4 can be pre-tightened to reduce the need for the staff to press the connection between the upper mold 1 and the lower mold 2 for a long time, and finally, the limiting mechanism 5 can be locked by the knocking mechanism 7 to prevent the limiting mechanism 5 from suddenly working, which may easily cause the upper mold 1 and the lower mold 2 to separate. By setting the ejection spring 8, when the upper mold 1 and the lower mold 2 are separated, the reaction force of the ejection spring 8 can be used to apply a reaction force between the upper mold 1 and the lower mold 2, so as to speed up the separation efficiency between the upper mold 1 and the lower mold 2.

[0024] In the specific work, when using, first cut the steel bars of appropriate length according to the pile length and the reserved length at both ends, tie the steel cage according to the size of the drawing, select the end plate of the size corresponding to the solid square pile, align the end plate of the solid square pile head with the ends of the steel cage and embed them tightly, transfer the steel cage to the upper mold 1 and the lower mold 2 that have been cleaned and coated with an isolation agent, and then close the upper mold 1 and the lower mold 2, and pour the concrete. After pouring, the closed upper mold 1 and the lower mold 2 are transferred to the tensioning table for tensioning. After tensioning, they are moved to the centrifuge for centrifugation, and the formed square piles are transferred to the steaming tank for steam curing for one hour. After the concrete has a certain strength after initial setting, the upper mold 1 and the lower mold 2 are tilted and poured into the micro-expansion concrete. When the concrete overflows from the overflow port, it is sealed, and it is placed flat in the steaming tank for steaming and curing for six hours. After the curing is completed, the square piles are transferred out for demoulding, and finally a formed solid square pile is obtained.

[0025] In one embodiment, reference Figure 3 and Figure 8 The limiting mechanism 5 includes a limiting shell 51 fixed on the upper mold 1 and the lower mold 2 respectively, the inner wall of the limiting shell 51 is rotatably connected with a rotating shaft 52 through a bearing, the surface of the rotating shaft 52 is fixedly connected with a cam 53, the surface of the cam 53 is fitted with a plug-in component 54, the interior of the positioning rod 4 is provided with a plug-in groove 55, the end of the plug-in component 54 passes through the limiting shell 51 and is plugged into the plug-in groove 55, the plug-in component 54 includes a plug-in block 541 sliding on the inner wall of the limiting shell 51, one end of the plug-in block 541 is fixedly connected with an arc-shaped top block 542, the surface of the arc-shaped top block 542 is fitted on the cam 53, the side wall of the arc-shaped top block 542 is fixedly connected with a spring tube 543, and the end of the spring tube 543 is fixedly connected to the inner wall of the limiting shell 51.

[0026] By adopting such a solution, through the setting of the limiting mechanism 5, the disassembly and assembly method between the upper mold 1 and the lower mold 2 can be simplified, so that the casting mold can be quickly disassembled and assembled, further improving the reliability and efficiency of the casting mold.

[0027] During specific operation, after the upper mold 1 and the lower mold 2 are molded together, the internal rotating shaft 52 of the limiting housing 51 rotates clockwise, and the cam 53 can be rotated synchronously under the rotation of the rotating shaft 52. The convex point position can be fitted to the surface of the plug-in component 54 under the rotation of the cam 53. When the convex point of the cam 53 fits to the surface of the arc-shaped top block 542, the plug-in block 541 can be extended outward, and the spring cylinder 543 can be compressed at the same time. When the plug-in block 541 extends outward, it can be plugged into the plug-in slot 55 provided in the positioning rod 4, so that the positioning rod 4 can be finally locked. When the upper mold 1 and the lower mold 2 are to be disassembled, it is only necessary to rotate the rotating shaft 52 counterclockwise to fit the concave position of the cam 53 into the surface of the plug-in assembly 54. At this time, under the spring force of the spring tube 543, a thrust is applied to the side wall of the arc-shaped top block 542 to displace the arc-shaped top block 542. Since the arc-shaped top block 542 is fixed on the surface of the plug-in block 541, the plug-in block 541 can be retracted inward to separate the plug-in block 541 from the plug-in assembly 54 opened on the surface of the positioning rod 4, thereby quickly unlocking the positioning rod 4, thereby improving the reliability and efficiency of the casting mold.

[0028] In one embodiment, reference Figure 1 and Figure 4 The pre-tightening mechanism 6 includes a fixed block 61 respectively fixed on the upper mold 1 and the lower mold 2, the interior of the fixed block 61 is fixedly connected with an extrusion spring 62, the end of the extrusion spring 62 is fixedly connected with an arc-shaped plug-in block 63, and the surface of the positioning rod 4 is provided with a plug-in hole 64, and the end of the arc-shaped plug-in block 63 passes through the plug-in hole 64.

[0029] By adopting such a scheme, under the setting of the pre-tightening mechanism 6, when the upper mold 1 and the lower mold 2 are connected, when the positioning rod 4 passes through the interior of the upper mold 1 or the lower mold 2, it can be inserted into the interior of the positioning rod 4, so that the positioning rod 4 can be pre-tightened, thereby reducing the problem of the staff having to press for a long time.

[0030] During specific operation, when the top positioning rod 4 of the lower mold 2 is inserted into the upper mold 1, the arc-shaped plug block 63 inside the fixed block 61 can be displaced inward through the positioning rod 4, so that the extrusion spring 62 can be squeezed. As the positioning rod 4 continues to move upward, when the plug-in hole 64 and the arc-shaped plug block 63 are on the same horizontal plane, the extrusion spring 62 applies a reaction force to the end of the arc-shaped plug block 63, and the arc-shaped plug block 63 is automatically inserted into the plug-in hole 64 under the reaction force, thereby pre-tightening the positioning rod 4 to preliminarily fix the upper mold 1 and the lower mold 2.

[0031] In one embodiment, reference Figure 1 , Figure 5 , Figure 6 and Figure 7 The knocking mechanism 7 includes a rotating rod 71 fixed to the top of the rotating shaft 52, one end of the rotating rod 71 is fixedly connected to the knocking rod 72, the side wall of the knocking rod 72 is fixedly connected to the knocking head 73, a vibration rod 74 is arranged on the same horizontal plane as the knocking head 73, and the vibration rod 74 is respectively fixedly connected to the side walls of the upper mold 1 and the lower mold 2. The knocking mechanism 7 also includes two limit blocks 75 fixed to the top of the limit shell 51, and the surfaces of the two limit blocks 75 are fixedly connected to the magnets 76. The right limit block 75 is located above the rotating rod 71 for limiting, and the left limit block 75 is located below the rotating rod 71 for limiting. An extension rod 77 is slidably arranged on the inner wall of the rotating rod 71, and a connecting screw 78 is penetrated and connected to the top of the rotating rod 71. The surface of the extension rod 77 is provided with a plurality of threaded holes 79 threadedly connected to the connecting screw 78.

[0032] By adopting such a scheme, under the setting of the knocking mechanism 7, the rotating rod 71 can drive the rotating shaft 52 to rotate, so that the angle of the rotating shaft 52 can be changed, thereby disassembling the limiting mechanism 5, and at the same time, when the rotating rod 71 rotates to the leftmost side, the surface of the upper mold 1 and the lower mold 2 can be knocked. Under the vibration force of the knocking, the solid square piles in the upper mold 1 and the lower mold 2 can be automatically separated under the vibration force, thereby speeding up the disassembly efficiency between the upper mold 1 and the lower mold 2 in the later stage.

[0033] During specific operation, the rotating rod 71 is fixed to the surface of the rotating shaft 52, and the rotating shaft 52 can be driven to rotate synchronously when the rotating rod 71 rotates clockwise. Since the knocking rod 72 is fixed to the end of the rotating rod 71, the knocking rod 72 can be driven to rotate synchronously. Through the rotation of the knocking rod 72, the knocking head 73 on the surface of the knocking rod 72 can be knocked onto the vibration rod 74, and the vibration rod 74 can generate resonance on the inner wall of the upper mold 1, so as to separate the solid square piles formed inside the upper mold 1 and the lower mold 2. Under the setting of two limit blocks 75, the two directions of rotation of the rotating rod 71 can be limited respectively, so as to simplify the operation mode of the rotating rod 71, and the setting of the magnet 76 on the surface of the limit block 75 When the lever 78 is in the unlocked position, the locking cam 78 is engaged with the locking cam 79 and the locking cam 79 is engaged.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A casting mold for casting solid square piles, comprising an upper mold (1) and a lower mold (2), wherein a molding cavity (3) is provided inside the upper mold (1) and the lower mold (2), and characterized in that: Also includes: A positioning rod (4) is fixed on the top of the upper mold (1) and the lower mold (2), and the positioning rod (4) is used to perform through positioning between the upper mold (1) and the lower mold (2); A limiting mechanism (5) is fixed to the top of the upper mold (1) and the lower mold (2) and is used to be clamped inside the positioning rod (4) for limiting; A pre-tightening mechanism (6) is fixed to the top of the upper mold (1) and the lower mold (2) and is used to perform pre-tightening on the positioning rod (4) when it penetrates; The knocking mechanism (7) is arranged directly above the limiting mechanism (5) and is used to knock and vibrate the upper mold (1) and the lower mold (2) when they are disassembled.

2. A casting mold for casting solid square piles according to claim 1, characterized in that: The limiting mechanism (5) comprises a limiting shell (51) respectively fixed on the upper mold (1) and the lower mold (2); the inner wall of the limiting shell (51) is rotatably connected to a rotating shaft (52) via a bearing; a cam (53) is fixedly connected to the surface of the rotating shaft (52); a plug-in component (54) is attached to the surface of the cam (53); a plug-in slot (55) is provided inside the positioning rod (4); an end of the plug-in component (54) passes through the limiting shell (51) and is plugged into the plug-in slot (55).

3. A casting mold for casting solid square piles according to claim 1, characterized in that: The pre-tightening mechanism (6) comprises a fixed block (61) respectively fixed on the upper mold (1) and the lower mold (2); an extrusion spring (62) is fixedly connected inside the fixed block (61); an arc-shaped plug-in block (63) is fixedly connected to the end of the extrusion spring (62); a plug-in hole (64) is formed on the surface of the positioning rod (4); and an end of the arc-shaped plug-in block (63) passes through the plug-in hole (64).

4. A casting mold for casting solid square piles according to claim 1, characterized in that: The knocking mechanism (7) comprises a rotating rod (71) fixed to the top of the rotating shaft (52), one end of the rotating rod (71) is fixedly connected to a knocking rod (72), a side wall of the knocking rod (72) is fixedly connected to a knocking head (73), a vibration rod (74) is arranged on the same horizontal plane as the knocking head (73), and the vibration rod (74) is respectively fixedly connected to the side walls of the upper mold (1) and the lower mold (2).

5. A casting mold for casting solid square piles according to claim 4, characterized in that: The striking mechanism (7) further comprises two limit blocks (75) fixed on the top of the limit housing (51), and the surfaces of the two limit blocks (75) are fixedly connected with magnets (76), the right limit block (75) is located above the rotating rod (71) for limiting, and the left limit block (75) is located below the rotating rod (71) for limiting.

6. A casting mold for casting solid square piles according to claim 5, characterized in that: An extension rod (77) is slidably provided on the inner wall of the rotating rod (71), a connecting screw (78) is penetrated and connected to the top of the rotating rod (71), and a surface of the extension rod (77) is provided with a plurality of threaded holes (79) threadedly connected to the connecting screw (78).

7. A casting mold for casting solid square piles according to claim 2, characterized in that: The plug-in assembly (54) comprises a plug-in block (541) sliding on the inner wall of the limiting housing (51), one end of the plug-in block (541) being fixedly connected to an arc-shaped top block (542), and a surface of the arc-shaped top block (542) being fitted on the cam (53).

8. A casting mold for casting solid square piles according to claim 7, characterized in that: A spring cylinder (543) is fixedly connected to the side wall of the arc-shaped top block (542), and an end of the spring cylinder (543) is fixedly connected to the inner wall of the limiting housing (51).

9. A casting mold for casting solid square piles according to claim 1, characterized in that: An ejection spring (8) is fixedly connected to the surface of the positioning rod (4), and the other end of the ejection spring (8) is sleeved on the surface of the positioning rod (4).

10. A method for forming a casting mold for casting a solid square pile, comprising the casting mold for casting a solid square pile according to claim 2, characterized in that: The main steps include: S1. When in use, first cut the steel bars of appropriate length according to the pile length and the reserved length at both ends, tie the steel cage according to the drawing size, select the end plate of the size corresponding to the solid square pile, align the end plate of the solid square pile head with the ends of the steel cage and embed them tightly; S2, transferring the steel cage to the upper mold (1) and the lower mold (2) which have been cleaned and coated with an isolation agent, and then closing the upper mold (1) and the lower mold (2), and pouring concrete. After pouring, the closed upper mold (1) and the lower mold (2) are transferred to a tensioning table for tensioning. After tensioning, they are moved to a centrifuge for centrifugation, and the formed square piles are transferred to a steam curing tank for steam curing for one hour; S3. After the concrete has initially set and has a certain strength, the upper mold (1) and the lower mold (2) are tilted and poured with slightly expansive concrete. When the concrete overflows from the overflow port, the port is sealed and the pile is placed flat in a steam curing tank and steamed for six hours. After the curing is completed, the square pile is removed from the mold and demoulded, thereby finally obtaining a solid square pile.

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