Production mold for double-column foundation prefabricated structure

Abstract

The utility model belongs to the technical field of building equipment, and discloses a double-column foundation prefabricated structure production mold. The double-column foundation prefabricated structure production mold comprises a first mold body, a second mold body and a third mold body which are detachably and fixedly connected from top to bottom. The first mold, the second mold and the third mold can be spliced into a whole after being fixedly connected, and a first cavity and a second cavity which are independent of each other are contained in the inner space of the whole structure formed after splicing. The mold of the double-column foundation prefabricated structure can be quickly and conveniently assembled or disassembled, the vacancy that no double-column foundation mold exists in the market is filled, the obtained double-column foundation prefabricated structure is provided with the two columns used for bearing, firmer and more stable support can be provided for a building, and the construction efficiency is improved. And the building block is helpful for bearing buildings with larger weight and is suitable for building manufacturing.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction equipment, in particular to a production mould for a double-column foundation prefabricated structure. Background Art

[0002] When constructing concrete structures, due to the limited size of the construction site, it is necessary to use molds to pour the concrete in advance. The poured concrete foundation structure is then transported to the construction site for assembly. Due to the special shape of the concrete foundation structure, the mold plays a vital role in the pouring process.

[0003] Chinese utility model patent, granted with publication number CN207105197U, discloses a modular concrete casting mold that allows for quick assembly and disassembly and is easily flipped. However, this mold only contains one cavity, so after casting is complete and the mold is removed, the prefabricated concrete foundation structure becomes a single-column foundation.

[0004] Since the load-bearing capacity of a building depends primarily on the support capacity of a single-column foundation, a single-column foundation cannot bear excessive weight. When constructing large buildings, using a single-column foundation structure as the building's support foundation is unstable and can easily cause the building to collapse.

[0005] Therefore, a double-column foundation structure is needed to provide a more stable support for the building, but there is no mold on the market that can manufacture a prefabricated structure with a double-column foundation. Utility Model Content

[0006] In order to solve the above-mentioned deficiencies in the prior art, the utility model aims to provide a double-column foundation prefabricated structure production mold, which can be used to cast a prefabricated concrete structure with two columns, solving the problem that there is no mold on the market that can manufacture double-column foundation prefabricated structures, and filling the market gap.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a double-column foundation prefabricated structure production mold, including a first mold, a second mold, and a third mold that are detachably fixedly connected from top to bottom; the first mold, the second mold, and the third mold can be assembled into a whole after being fixedly connected, and the internal space of the overall structure formed after assembly accommodates a first cavity and a second cavity that are independent of each other.

[0008] As a limitation of the present invention: the internal space of the first mold is a polygonal cone, and the area of the upper end of the cone is larger than the area of the lower end of the cone; the internal dimensions of the second mold are adapted to the internal dimensions of the first mold, and the shape of the internal space of the second mold is a prism; the internal dimensions of the third mold are adapted to the internal dimensions of the second mold, and the third mold contains a first cavity and a second cavity that are independent of each other; the shapes of the internal spaces of the first cavity and the second cavity are both prisms.

[0009] As a limitation of the present utility model: floor bolt positioning mechanisms are detachably and fixedly connected to the lower ends of the first cavity and the second cavity respectively; the floor bolt positioning mechanism includes a sealing plate detachably and fixedly sealed to the lower end of the first cavity or the second cavity, and a plurality of first floor bolt positioning holes are formed in the sealing plate; a plurality of supporting members are fixedly arranged on the lower surface of the sealing plate; a positioning plate is fixedly arranged in the direction away from the sealing plate of the supporting member; a plurality of second floor bolt positioning holes corresponding to the first floor bolt positioning holes are formed in the positioning plate, and the first floor bolt positioning holes and the second floor bolt positioning holes are coaxially arranged and have the same size.

[0010] As a limitation of the present utility model: after the lower end of the first mold and the upper end of the second mold are abutted against each other, a first frame body and a second frame body that overlap each other are formed, and a plurality of hole-shaped structures for a fastening member to penetrate are formed in the first frame body and the second frame body, and the first mold and the second mold are fixedly connected by the fastening member; after the lower end of the second mold and the upper end of the third mold are abutted against each other, a third frame body and a fourth frame body that overlap each other are formed, and a plurality of hole-shaped structures for a fastening member to penetrate are formed in the third frame body and the fourth frame body, and the second mold and the third mold are fixedly connected by the fastening member; after the lower end of the first cavity and the floor bolt positioning mechanism are abutted against each other, a fifth frame body and a sixth frame body that overlap each other are formed, and a plurality of hole-shaped structures for a fastening member to penetrate are formed in the fifth frame body and the sixth frame body, and the first cavity and the floor bolt positioning mechanism are fixedly connected by the fastening member; after the lower end of the second cavity and the floor bolt positioning mechanism are abutted against each other, a seventh frame body and an eighth frame body that overlap each other are formed, and a plurality of hole-shaped structures for a fastening member to penetrate are formed in the seventh frame body and the eighth frame body, and the second cavity and the floor bolt positioning mechanism are fixedly connected by the fastening member.

[0011] As a limitation of the present utility model: the hole-shaped structure is a through hole or a groove.

[0012] As a limitation of the present utility model: the fastening member is a bolt or a locking clip.

[0013] As a limitation of the present utility model: the locking clip includes two parallel fixing plates, and one end of the fixing plate is fixedly arranged on the surface of one of the two frame bodies; a pin shaft penetrates through the other ends of the two fixing plates at the same time; a screw rod is rotatably arranged on the pin shaft in the direction towards the frame body, and the screw rod is located between the two fixing plates; a nut is sleeved on the screw rod in the direction towards the other frame body of the two frame bodies, and the nut abuts against the surface of the other frame body of the two frame bodies.

[0014] As a limitation to the present utility model: The production mold for the precast double-column foundation structure further includes at least two lifting parts fixedly arranged on the production mold for the precast double-column foundation structure, and the lifting parts are all located below the horizontal plane where the center of gravity of the production mold for the precast double-column foundation structure lies.

[0015] As a limitation to the present utility model: It further includes a plurality of support structures fixedly arranged between the first mold; the plurality of support structures are arranged along the circumferential direction of the first mold and are fixedly arranged on the outer wall of the first mold on the side close to the ground; the height of the support structures is higher than the sum of the heights of the first mold, the second mold, the third mold, and the anchor bolt positioning mechanism.

[0016] Due to the adoption of the above technical solution, compared with the prior art, the beneficial effects obtained by the present utility model are as follows: A mold for manufacturing a precast double-column foundation structure is provided, filling the gap in the market where there is no double-column foundation mold. The double-column foundation mold is composed of three molds that are detachably and fixedly connected from top to bottom, and the mold can be assembled or disassembled quickly and conveniently; since the perimeter of the frame formed at the adjacent part of the two molds is relatively long, there is enough space on the frame to set a plurality of fastening components, which can better clamp the adjacent two molds, improve the overall sealing performance of the mold, and avoid the problem that the pressure at the lower part of the mold is too high when pouring a large amount of concrete, causing the concrete to leak from the interface.

[0017] Meanwhile, after the first mold, the second mold, and the third mold are fixedly connected, a mold with a complete structure is obtained. According to the mutual cooperation of the internal structures of the first mold, the second mold, and the third mold, independent first cavities and second cavities are formed inside the mold. By using the mold with the above complete structure to pour concrete, after the concrete dries and solidifies, a precast concrete structure with a double-column foundation can be obtained. The obtained precast double-column foundation structure has two columns for load-bearing, which can provide a more solid and stable support for the building, help to bear a building with a greater weight, and be better applied to the manufacturing field of large buildings. Description of the Drawings

[0018] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0019] Figure 1 It is a three-dimensional structure schematic diagram of an embodiment of the present utility model;

[0020] Figure 2 It is a front view structure schematic diagram of an embodiment of the present utility model;

[0021] Figure 3 It is an inverted structure schematic diagram of an embodiment of the present utility model;

[0022] Figure 4Schematic structural diagram of the locking clip according to an embodiment of the present utility model;

[0023] Figure 5 Schematic structural diagram of the anchor bolt positioning mechanism according to an embodiment of the present utility model.

[0024] In the figure: 1 - first mold, 2 - second mold, 3 - third mold, 4 - first cavity, 5 - second cavity, 6 - sealing plate, 7 - first anchor bolt positioning hole, 8 - supporting member, 9 - positioning plate, 10 - second anchor bolt positioning hole, 11 - first frame, 12 - second frame, 13 - hole-like structure, 14 - third frame, 15 - fourth frame, 16 - fifth frame, 17 - sixth frame, 18 - seventh frame, 19 - eighth frame, 20 - locking clip, 21 - fixing plate, 22 - pin shaft, 23 - screw rod, 24 - nut, 25 - lifting part, 26 - supporting structure, 27 - sealing ring. Detailed implementation manners

[0025] The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be understood that the production mold for the precast structure of the double-column foundation described herein is a preferred embodiment, and is only used to illustrate and explain the present utility model, and does not constitute a limitation to the present utility model.

[0026] The orientation terms or positional relationships such as "upper", "lower", "left", "right", etc. described in the present utility model are based on the orientation relationship of the accompanying drawings of the specification of the present utility model, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element must have a specific orientation, a specific orientation structure and operation, and therefore cannot be understood as a limitation to the content protected by the present utility model.

[0027] As Figure 1 shown, a production mold for the precast structure of a double-column foundation includes a first mold 1, a second mold 2, and a third mold 3 that are detachably and fixedly connected from top to bottom. After the first mold 1, the second mold 2, and the third mold 3 are fixedly connected, the three molds can be assembled together to form a whole. In the internal space of the overall structure formed after assembly, there are accommodated an independent first cavity 4 and a second cavity 5. Further, in order to make the base of the precast structure of the double-column foundation more stable after pouring, a base needs to be formed under the two columns to support the double-column foundation. Therefore, an interconnected hollow structure is formed inside the first mold 1 and the second mold 2, and the first cavity 4 and the second cavity 5 are independently formed in the space inside the third mold 3.

[0028] After pouring cement into the first mold 1, it will flow through the second mold 2 and gradually accumulate in the two cavities of the third mold 3; as the amount of cement increases, the internal space of the mold can be filled, and a precast double-column foundation structure with two load-bearing columns can be obtained after solidification and demolding. The contour of each load-bearing column is the same as the internal structure of the first cavity 4 or the second cavity 5. In actual production, if a precast double-column foundation structure capable of bearing a greater weight needs to be produced, it is necessary to increase the volume of the internal space of the first cavity 4 or the second cavity 5, and the resulting load-bearing column after solidification will also become thicker accordingly to meet the actual needs. Regarding the internal dimensions of the first cavity 4 and the second cavity 5, this embodiment does not limit them too much, as long as a precast double-column foundation structure that meets the actual needs can be cast using these two cavities.

[0029] To facilitate demolding and reduce the weight of the mold itself, the first mold 1, the second mold 2, and the third mold 3 are all thin-walled structures with openings at both the top and bottom. At the same time, to make the surface of the precast double-column foundation structure poured out smoother and more beautiful, the internal dimensions of the first mold 1 are adapted to the internal dimensions of the second mold 2. Preferably, the internal dimensions of the lower side of the first mold 1 are the same as the internal dimensions of the upper side of the second mold 2. After splicing the lower part of the first mold 1 and the upper part of the second mold 2, the cement poured into the first mold 1 can completely flow into the second mold 2, avoiding the accumulation and leakage of cement at the interface of the two molds. Similarly, the internal dimensions of the second mold 2 are adapted to the internal dimensions of the third mold 3. Preferably, the internal dimensions of the lower side of the second mold 2 are the same as the internal dimensions of the upper side of the third mold 3, so that the cement in the second mold 2 can completely flow into the third mold 3.

[0030] Since the concrete foundation structure has higher strength requirements for the slope part, when the area of the lower part of the mold is larger than the area of the upper part, air bubbles will be generated in the still-drying concrete during the pouring process and move upward and be discharged from the slope part. After the concrete solidifies and is demolded, the slope part is prone to honeycombing and pitting, which affects the strength and beauty of the concrete foundation structure. Therefore, in this embodiment, an inverted mold is used, and the internal space of the first mold 1 is set as a polygonal cone, and the area of the upper part of the cone is larger than the area of the lower part of the cone. The air bubbles can be discharged from the upper surface of the mold and will not be discharged from the slope part, avoiding the generation of honeycombing and pitting, and thus improving the strength of the concrete foundation structure.

[0031] In addition, by using the second mold 2, a rectangular base for supporting the two columns can be formed in the precast double-column foundation structure after pouring, which is beneficial to further improving the stability of the precast structure to better support the two column bodies formed by the third mold 3 on the first mold 1. Therefore, the shape of the internal space of the second mold 2 is a prism, and preferably, the shape of the internal space of the second mold 2 is a quadrangular prism with a rectangular cross-section. The depth of the second mold 2 can be changed according to actual needs to adjust the thickness of the above-mentioned rectangular base.

[0032] The shapes of the internal spaces of the first cavity 4 and the second cavity 5 are both prisms. Preferably, the shapes of the internal spaces of the first cavity 4 and the second cavity 5 are both quadrangular prisms, and a double-column structure in the shape of a cuboid can be cast to meet the actual needs. In other possible cases, the shapes of the internal spaces of the first cavity 4 and the second cavity 5 can also be set as pentagonal prisms or hexagonal prisms. This embodiment does not limit this too much, as long as it can play a role in firmly supporting the building.

[0033] To better fix the building on the precast double-column foundation structure, anchor bolts need to be embedded in the precast structure in the direction perpendicular to the ground, and an anchor bolt positioning mechanism is used for positioning. During specific operations, the anchor bolt positioning mechanism is detachably and fixedly connected to the lower end of the first cavity 4. The anchor bolt positioning mechanism includes a sealing plate 6 that is detachably and fixedly sealed to the first cavity 4. The sealing plate 6 can seal the lower end of the first cavity 4 to prevent the unhardened cement from flowing out of the lower end of the first cavity 4. A number of first anchor bolt positioning holes 7 are provided on the sealing plate 6, and the first anchor bolt positioning holes 7 can position the anchor bolts. The size of each first anchor bolt positioning hole 7 is adapted to the diameter of the anchor bolt, so that the anchor bolt can just pass through the first anchor bolt positioning hole 7. The number of the first anchor bolt positioning holes 7 can be adjusted according to the number of anchor bolts to be embedded, and this embodiment does not limit this too much. In addition, there may be gaps between the anchor bolts and the first anchor bolt positioning holes 7. To prevent the unhardened cement from leaking through the gaps, a number of sealing rings 27 that are adapted to the size of the first anchor bolt positioning holes 7 are also fixedly provided on the surface of the sealing plate 6 on the side away from the first cavity 4, for closing the above-mentioned gaps and improving the tightness of the lower part of the first cavity 4.

[0034] When using the mold, if only one anchor bolt positioning hole is used to position the anchor bolt, the anchor bolt may tilt relative to the ground direction due to the excessive weight of the building, damaging the connection between the prefabricated structure of the double-column foundation and the building. Therefore, it is necessary to further fix the anchor bolt to keep it perpendicular to the ground. For this purpose, positioning plates 9 are also arranged at intervals on the side of the sealing plate 6 away from the first cavity 4. The sealing plate 6 and the positioning plates 9 are connected by a number of supporting components 8 fixedly arranged on the lower surface of the sealing plate 6. The positioning plates 9 are fixedly arranged in the direction away from the sealing plate 6 of the supporting components 8. Preferably, the supporting components 8 are rod-shaped structures and the number is two, to connect the sealing plate 6 and the positioning plates 9 into one body. On the positioning plates 9, a number of second anchor bolt positioning holes 10 corresponding to the first anchor bolt positioning holes 7 are also provided. The first anchor bolt positioning holes 7 and the second anchor bolt positioning holes 10 are coaxially arranged and have the same size. According to the principle that two points determine a straight line, the coaxially arranged first anchor bolt positioning holes 7 and second anchor bolt positioning holes 10 can position an anchor bolt. Through the above setting method, it can be avoided that in the case of only one anchor bolt positioning hole, the anchor bolt may be affected by external forces and tilt at a certain angle relative to the ground, thus affecting the positioning effect.

[0035] Similarly, in order to position the anchor bolts embedded in the second cavity 5, an anchor bolt positioning mechanism is also provided at the lower end of the second cavity 5. The structure, setting method, and size of this anchor bolt positioning mechanism are the same as those of the anchor bolt positioning mechanism provided at the lower end of the first cavity 4, and will not be described repeatedly here. When manufacturing other prefabricated structures of double-column foundations, the thicknesses of the two columns and the number of anchor bolts to be embedded may not be the same. Therefore, the various specification parameters of the anchor bolt positioning mechanisms at the lower ends of the two cavities can be adjusted according to actual needs, and this embodiment does not limit this too much.

[0036] After the first mold 1, the second mold 2, and the third mold 3 are spliced together in sequence, it is necessary to fix the connection between the two molds. A first frame 11 is fixedly arranged around the lower end of the first mold 1, and a second frame 12 is fixedly arranged around the upper end of the second mold 2. After the lower end of the first mold 1 and the upper end of the second mold 2 are in mutual contact, the first frame 11 and the second frame 12 overlap each other. A number of hole-shaped structures 13 for the fastening components to penetrate are provided on the first frame 11 and the second frame 12, and the hole-shaped structures 13 of the two frames are correspondingly arranged. A passage for the fastening components to pass through is formed on the two frames, and the first mold 1 and the second mold 2 are fixedly connected by the fastening components.

[0037] Similarly, a third frame body 14 is fixedly arranged around the lower end of the second mold 2, and a fourth frame body 15 is fixedly arranged around the upper end of the third mold 3, which can be used to fixedly connect the second mold 2 and the third mold 3. After the lower end of the second mold 2 and the upper end of the third mold 3 are abutted against each other, the third frame body 14 and the fourth frame body 15 that overlap each other are formed. A plurality of hole-shaped structures 13 for the fastening members to penetrate are respectively formed on the third frame body 14 and the fourth frame body 15, and a channel for the fastening members to pass through is formed on the two frame bodies. The second mold 2 and the third mold 3 are fixedly connected by the fastening members.

[0038] A fifth frame body 16 is fixedly arranged around the lower end of the first cavity 4, and a sixth frame body 17 is fixedly arranged around the periphery of the sealing plate 6 in the anchor bolt positioning mechanism corresponding to the first cavity 4. After the lower end of the first cavity 4 and the upper end of the anchor bolt positioning mechanism corresponding to the first cavity 4 are abutted against each other, the fifth frame body 16 and the sixth frame body 17 can overlap each other. A plurality of hole-shaped structures 13 for the fastening members to penetrate are respectively formed on the fifth frame body 16 and the sixth frame body 17, and a channel for the fastening members to pass through is formed on the two frame bodies. The first cavity 4 and the anchor bolt positioning mechanism corresponding to the first cavity 4 are fixedly connected by the fastening members.

[0039] A seventh frame body 18 is fixedly arranged around the lower end of the second cavity 5, and an eighth frame body 19 is fixedly arranged around the periphery of the sealing plate 6 in the anchor bolt positioning mechanism corresponding to the second cavity 5. After the lower end of the second cavity 5 and the upper end of the anchor bolt positioning mechanism corresponding to the second cavity 5 are abutted against each other, the seventh frame body 18 and the eighth frame body 19 can overlap each other. A plurality of hole-shaped structures 13 for the fastening members to penetrate are respectively formed on the seventh frame body 18 and the eighth frame body 19, and a channel for the fastening members to pass through is formed on the two frame bodies. The second cavity 5 and the anchor bolt positioning mechanism corresponding to the second cavity 5 are fixedly connected by the fastening members.

[0040] The perimeter of the frame body structure arranged around each mold is relatively long, so there is enough space on the frame body to arrange a plurality of fastening members 8 to better clamp two adjacent molds, improve the sealing performance between adjacent molds, and improve the overall sealing performance of the mold. At the same time, it also avoids the problem that when a large amount of concrete is poured, the pressure at the lower part of the mold is too high and the concrete will leak from the interface of adjacent molds.

[0041] Preferably, the above eight frame bodies are all thin sheet-shaped frame bodies, which can reduce the overall weight of the mold and the volume of the fastening members 8, and improve the practicability of the mold. Of course, the thickness of the frame body and the number of hole-shaped structures 13 on the frame body through which the fastening members 8 can pass can also be adjusted according to actual needs to play a good fixing role between adjacent molds. This embodiment does not limit this too much.

[0042] Furthermore, the hole-like structure 13 can be a through-hole or a groove. The fastening member 8 inserted in the through-hole is a bolt, and the fastening member 8 inserted in the groove is a locking clip 20. For example, since the side wall of the first mold 1 is an inclined surface and the length of the locking clip 20 is relatively large, when the locking clip 20 is used as the fastening member 8, it may abut against the side wall of the first mold 1. Therefore, when fixing the first mold 1 and the second mold 2, the hole-like structure 13 is set as a through-hole, and the two molds are fixed with bolts. Among them, the through-hole has threads and can be threadedly connected with the bolts. For the second mold 2 and the third mold 3, their side walls are both flat surfaces. Therefore, the hole-like structure 13 can be set as a groove, and a locking clip 20 is inserted in the groove to fix the second mold 2 and the third mold 3. Similarly, the fixing between the first cavity 4 and the second cavity 5 and their corresponding anchor bolt positioning mechanisms all uses the locking clip 20 inserted in the groove. It should be noted here that the types of the fastening member 8 and the hole-like structure 13 can be selected according to actual needs and used in combination. This embodiment does not limit this too much, as long as it can play a good role in fixing adjacent molds.

[0043] As Figure 4 shown, the above-mentioned locking clip 20 includes two parallel fixing plates 21, and one end of the fixing plate 21 is fixedly arranged on the surface of one of the two frames. A pin shaft 22 penetrates through the other ends of the two fixing plates 21 at the same time. A screw rod 23 is rotatably arranged on the pin shaft 22 in the direction towards the frame, and the screw rod 23 is located between the two fixing plates 21. The screw rod 23 can be pressed into the groove. A nut 24 is sleeved on the screw rod 21 in the direction towards the other frame of the two frames, and the nut 24 abuts against the surface of the other frame of the two frames. After the screw rod 23 is pressed into the groove, the nut 24 is made to abut against the surface of the other frame, and the nut 24 is continuously screwed until the surface of the other frame is tightened, so as to further fix the two frames. When demolding, only need to loosen the nut 24, make the nut 24 leave the surface of the other frame, and then take out the screw rod 23 from the groove, and the two molds can be separated.

[0044] For example, continue to refer to Figure 4 , when fixedly connecting the second mold 2 and the third mold 3, the locking clip 20 needs to be inserted into the groove formed by the coincidence of the third frame 14 and the fourth frame 15. Therefore, one end of the fixing plate 21 is fixedly arranged on the upper surface of the third frame 14. At this time, rotating the screw rod 23 arranged on the pin shaft 22 can press the screw rod 23 into the groove to preliminarily fix the two frames. Subsequently, the nut 24 is screwed so that the nut 24 abuts against the lower surface of the fourth frame 15 to further fix the second mold 2 and the third mold 3, thereby improving the connection strength between adjacent molds.

[0045] In another possible case, the locking clip 20 can also be turned upside down for use, and the connection position between the locking clip 20 and the frame body can be adjusted according to the actual situation. For example, one end of the fixing plate 21 is fixedly arranged on the lower surface of the fourth frame body 15. Correspondingly, the nut 24 will abut against the upper surface of the third frame body 14.

[0046] When using a mold to pour a precast structure, the two cavities in the third mold are on the side close to the ground. After pouring is completed, the mold needs to be lifted and flipped so that the first mold and the second mold are on the side close to the ground. Therefore, at least two lifting parts 25 are also fixedly arranged on the production mold of the double-column foundation precast structure. When hoisting, a hoisting mechanism such as a gantry crane or a crane can be used to lift it and complete the overall flipping of the mold in the air. Among them, the structure of the lifting part 25 is prior art and will not be repeatedly described in this embodiment.

[0047] Furthermore, to ensure that the pouring mold can flip itself due to gravity in the air after being lifted, multiple lifting parts 25 are all located below the horizontal plane where the center of gravity of the production mold of the double-column foundation precast structure is located. If the lifting part 25 is located above the horizontal plane where the center of gravity of the pouring mold is located, the center of gravity of the overall mold structure will still be below it and will not flip itself in the air. It may be necessary to further operate the mold manually, which is not conducive to saving construction time.

[0048] Furthermore, in order to make the overall mold stand firmly on the ground during pouring, several support structures 26 are also fixedly arranged on the production mold of the double-column foundation precast structure. Preferably, several support structures 26 are fixedly arranged on the outer wall of the first mold 1 on the side close to the ground, and the support structures 26 are arranged along the circumferential direction of the first mold 1. The height of the support structure 26 is higher than the sum of the heights of the first mold 1, the second mold 2, the third mold 3, and the anchor bolt positioning mechanism, so as to form a certain space between the anchor bolt positioning mechanism and the ground, avoid direct contact between the anchor bolt positioning mechanism and the ground, and prevent damage to the anchor bolt positioning mechanism due to the excessive weight of the mold. In a possible implementation manner, the support structure 26 is a support frame. By arranging multiple support frames on the outer wall of the first mold 1 on the side close to the ground, multiple force application points between the mold and the ground can be provided to firmly and horizontally support the overall mold on the ground.

[0049] When using the mold with the above structure to produce the precast structure of the double-column foundation, it is necessary to first assemble the first mold 1, the second mold 2, and the third mold 3 into an integral structure from top to bottom, fix the first mold 1 and the second mold 2 with bolts, and fix the second mold 2 and the third mold 3 with a locking clip 20; install the anchor bolt positioning mechanisms at the lower ends of the first cavity 4 and the second cavity 5 in the third mold 3 respectively, and at the same time fix the cavities and the anchor bolt positioning mechanisms with the locking clip 20, thus obtaining a mold structure with an upper opening and a lower seal. At this time, pour concrete into the space inside the mold. After the concrete dries, use the hoisting mechanism to lift the mold and complete the flipping by itself in the air. Place the inverted mold on the ground, and after successively removing the locking clip 20 between the first cavity 4 and the second cavity 5 and the anchor bolt positioning mechanism, the locking clip 20 between the second mold 2 and the third mold 3, and the bolts between the first mold 1 and the second mold 2, the mold removal step is completed, and finally a precast structure with a double-column foundation is obtained.

[0050] Since the above mold can produce the precast structure of the double-column foundation, it fills the gap in the market where there is no mold for the double-column foundation. The mold consists of three detachably and fixedly connected molds from top to bottom, has good sealing performance, and can be assembled or disassembled quickly and conveniently. The precast structure of the double-column foundation obtained by using this mold has two columns for load-bearing, which can provide a more solid and stable support for the building, help to bear a building with a greater weight, and can be well applied in the manufacturing field of large buildings.

Claims

1. A production mold for a precast structure of a double-column foundation, characterized in that: It includes a first mold, a second mold, and a third mold that are detachably and fixedly connected from top to bottom; After the first mold, the second mold, and the third mold are fixedly connected, they can be assembled into a whole, and an independent first cavity and a second cavity are accommodated in the internal space of the whole structure formed after assembly.

2. The production mold for the prefabricated structure of the double-column foundation according to claim 1, characterized in that: The internal space of the first mold is a polygonal cone, and the area of the upper end of the cone is larger than the area of the lower end of the cone; The internal dimensions of the second mold are adapted to the internal dimensions of the first mold, and the shape of the internal space of the second mold is a prism; The internal dimensions of the third mold are adapted to the internal dimensions of the second mold, and the third mold accommodates an independent first cavity and a second cavity; the shapes of the internal spaces of the first cavity and the second cavity are both prisms.

3. The production mold for the precast structure of the double-column foundation according to claim 2, characterized in that: Ground bolt positioning mechanisms are detachably and fixedly connected to the lower ends of the first cavity and the second cavity respectively; The ground bolt positioning mechanism includes a sealing plate that is detachably and fixedly sealed to the lower end of the first cavity or the second cavity, and a plurality of first ground bolt positioning holes are provided on the sealing plate; A plurality of support components are fixedly arranged on the lower surface of the sealing plate; A positioning plate is fixedly arranged in the direction away from the sealing plate of the support component; A plurality of second ground bolt positioning holes corresponding to the first ground bolt positioning holes are provided on the positioning plate, and the first ground bolt positioning holes and the second ground bolt positioning holes are coaxially arranged and have the same size.

4. The production mold for the precast structure of the double-column foundation according to claim 3, characterized in that: After the lower end of the first mold and the upper end of the second mold are abutted against each other, a first frame and a second frame that overlap each other are formed. A plurality of hole-shaped structures for the fastening components to penetrate are provided on the first frame and the second frame, and the first mold and the second mold are fixedly connected by the fastening components; After the lower end of the second mold and the upper end of the third mold are abutted against each other, a third frame and a fourth frame that overlap each other are formed. A plurality of hole-shaped structures for the fastening components to penetrate are provided on the third frame and the fourth frame, and the second mold and the third mold are fixedly connected by the fastening components; After the lower end of the first cavity and the ground bolt positioning mechanism are abutted against each other, a fifth frame and a sixth frame that overlap each other are formed. A plurality of hole-shaped structures for the fastening components to penetrate are provided on the fifth frame and the sixth frame, and the first cavity and the ground bolt positioning mechanism are fixedly connected by the fastening components; After the lower end of the second cavity and the ground bolt positioning mechanism are abutted against each other, a seventh frame and an eighth frame that overlap each other are formed. A plurality of hole-shaped structures for the fastening components to penetrate are provided on the seventh frame and the eighth frame, and the second cavity and the ground bolt positioning mechanism are fixedly connected by the fastening components.

5. The production mold for the precast structure of the double-column foundation according to claim 4, characterized in that: The hole-shaped structure is a through hole or a groove.

6. The production mold for the prefabricated structure of the double-column foundation according to claim 5, characterized in that: The fastening component is a bolt or a locking clip.

7. The production mold for the precast structure of the double-column foundation according to claim 6, characterized in that: The locking clip includes two parallel fixing plates, and one end of the fixing plate is fixedly arranged on the surface of one of the two frames; A pin shaft penetrates through the other ends of the two fixing plates at the same time; A screw is rotatably arranged on the pin shaft in the direction towards the frame, and the screw is located between the two fixing plates; A nut is sleeved on the screw in the direction towards the other frame of the two frames, and the nut abuts against the surface of the other frame of the two frames.

8. The production mold for the precast structure of a double-column foundation according to any one of claims 3 to 7, characterized in that: It further includes at least two hoisting parts fixedly arranged on the production mold of the double-column foundation precast structure, and all of the hoisting parts are located below the horizontal plane where the center of gravity of the production mold of the double-column foundation precast structure is located.

9. The production mold for the prefabricated structure of the double-column foundation according to claim 8, characterized in that: It further includes a plurality of support structures fixedly arranged between the first mold; The plurality of support structures are arranged along the circumferential direction of the first mold and are fixedly arranged on the outer wall of the first mold on the side close to the ground; The height of the support structure is higher than the sum of the heights of the first mold, the second mold, the third mold and the anchor bolt positioning mechanism.

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