Bellows positioning assembly for tower casting and casting mold for prefabricated tower

Abstract

The present invention discloses a bellows positioning assembly for tower casting and a casting mold for a prefabricated tower, wherein the bellows positioning assembly includes a fixing plate and a positioning rod. A plurality of fixing plates are suitable for being arranged at the top of the casting cavity of the prefabricated tower, each fixing plate is provided with a bellows fixing hole, a plurality of the fixing plates are arranged radially, and one end of the plurality of fixing plates facing each other is connected. The positioning rod is partially inserted into the bellows fixing hole and partially extends below the fixing plate, the positioning rod is detachably connected to the fixing plate, and the positioning rod is used to cover the bellows. The bellows positioning assembly of the embodiment of the present invention, by providing a plurality of radial fixing plates connected at one end, the plurality of fixing plates can be simultaneously arranged at a plurality of positions in the casting cavity, so as to facilitate the simultaneous arrangement of a plurality of bellows in a casting cavity. The interior of the bellows is supported by the positioning rod, the bellows has sufficient anti-deformation force, and the bellows is less affected by the extrusion deformation of the inner mold and the outer mold.

Description

Technical Field

[0001] The invention belongs to the technical field of wind power generation, and in particular relates to a bellows positioning assembly for tower casting and a casting mould for a prefabricated tower. Background Art

[0002] As wind turbine power generation efficiency increases, blade lengths are getting longer, and the height and cross-sectional dimensions of wind turbine towers that match them are also increasing. Steel structure towers are difficult to meet the construction requirements of large cross-sectional high towers due to their high cost and difficulty in transportation. Precast concrete towers can economically build large wind turbine generator sets. During the construction of concrete towers, single precast tower sections are hoisted from bottom to top in sequence through a tower crane, and finally a complete concrete tower is built.

[0003] However, when the existing tower mold is used to cast a tower or a tower segment, it is difficult to position the bellows due to the lateral pressure from the inner mold and the outer mold during casting, and the bellows is prone to deformation. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a bellows positioning assembly for tower casting, wherein the bellows positioning assembly can quickly support the bellows, and the supported bellows has a strong anti-deformation ability.

[0005] The present invention also aims to provide a casting mold for a prefabricated tower tube including the bellows positioning assembly.

[0006] According to an embodiment of the present invention, a bellows positioning assembly for tower casting includes: a fixing plate, the fixing plate is suitable for being arranged at the top of the casting cavity of the prefabricated tower, the fixing plate is provided with a bellows fixing hole, there are multiple fixing plates, the multiple fixing plates are radially arranged, and the ends of the multiple fixing plates facing each other are connected; a positioning rod, the positioning rod is partially passed through the bellows fixing hole and partially extends to the bottom of the fixing plate, the positioning rod is detachably connected to the fixing plate, and the positioning rod is used to cover the corrugated tube.

[0007] According to the bellows positioning assembly for tower casting of the embodiment of the present invention, by setting a plurality of radial fixing plates connected at one end, one end of the fixing plate is fixed relative to the position of the casting cavity, and the other end forms a free end and is respectively connected to the top of the casting cavity. The plurality of fixing plates can be set at multiple positions of the casting cavity at the same time, which is convenient for setting multiple bellows in one casting cavity at the same time. Assuming that each fixing plate can fix a group of bellows, the plurality of fixing plates can fix multiple groups of bellows along the circumferential direction, and the support efficiency is very high. The positioning rod can be inserted into the bellows fixing hole on the fixing plate and then the bellows can be inserted, which provides a relatively fixed position for setting the bellows in the casting cavity. The positioning rod set in the bellows fixing hole can be sleeved with the bellows, so that the bellows set in the casting cavity is stable, the interior of the bellows is supported by the positioning rod, the bellows has sufficient anti-deformation force, and the bellows is less affected by the extrusion deformation of the inner mold and the outer mold.

[0008] According to one embodiment of the present invention, the bellows positioning assembly for tower casting also includes a column, the casting cavity surrounds the outside of the column, the fixing plates are radially arranged relative to the column, and the ends of the multiple fixing plates facing each other are connected to the column.

[0009] Optionally, a plurality of the fixing plates are evenly arranged around the column, and a plurality of the bellows fixing holes are circumferentially provided on each of the fixing plates.

[0010] According to a bellows positioning assembly for tower casting according to one embodiment of the present invention, each of the fixing plates is provided with a plurality of groups of bellows fixing holes spaced apart along the length direction.

[0011] According to a bellows positioning assembly for tower casting according to one embodiment of the present invention, each of the fixing plates comprises: two slide rails; a slide plate, the slide plate is adjustably fitted between the two slide rails, and the bellows fixing hole is arranged on the slide plate.

[0012] According to a further embodiment of the present invention, a slide groove is formed on one side of the two slide rails facing each other, and opposite sides of the slide plate fit in the slide groove. The slide plate is positioned in cooperation with the slide rail or the side wall mold of the casting cavity.

[0013] According to a bellows positioning assembly for tower casting according to one embodiment of the present invention, the fixing plate is provided with a positioning hole and a positioning pin inserted into the positioning hole, and the positioning pin is used to cooperate with the side wall mold of the casting cavity.

[0014] According to an embodiment of the present invention, a casting mold for a prefabricated tower comprises: a bottom mold; an inner and outer mold assembly, wherein the inner and outer mold assembly comprises at least one pair of inner and outer molds spaced apart and arranged relatively to each other, a casting cavity is formed between each pair of the inner and outer molds and the bottom mold, the inner side wall of each casting cavity is constructed by the inner mold, the outer side wall of each casting cavity is constructed by the outer mold, the bottom wall of each casting cavity is constructed by the bottom mold, the casting cavity is annular or arc-shaped for casting a concrete tower or concrete tower segment; a bellows positioning assembly, wherein the bellows positioning assembly is the aforementioned bellows positioning assembly for tower casting, a plurality of fixing plates are arranged on the inner and outer mold assemblies, and the positioning rod extends into the casting cavity.

[0015] According to the casting mold of the prefabricated tower tube of the embodiment of the present invention, when supporting the corrugated tube in the casting cavity of the annular concrete tower tube or concrete tower piece, the fixing plate is set on the inner and outer mold components, the positioning rod extends into the casting cavity, and the positioning rod and / or the top of the inner and outer mold components form a certain support for the fixing plate. After the corrugated tube is sleeved on the positioning rod, the corrugated tube is not easily deformed or displaced after being subjected to the extrusion force. Each fixing plate can fix a group of corrugated tubes, and multiple fixing plates can fix multiple groups of corrugated tubes along the circumferential direction, and the supporting efficiency is very high.

[0016] According to the casting mold of the prefabricated tower tube according to one embodiment of the present invention, the inner and outer mold assemblies include a plurality of pairs of the inner mold plates and the outer mold plates, and the plurality of casting cavities formed by the plurality of pairs of the inner mold plates and the outer mold plates and the bottom mold are arranged in sequence and spaced apart in radial direction, the inner mold plate between two adjacent casting cavities constitutes the inner side wall of the casting cavity on the radial outer side, and the outer mold plate between two adjacent casting cavities constitutes the outer side wall of the casting cavity on the radial inner side.

[0017] Optionally, the fixing plate cooperates with the inner and outer mold assemblies via positioning pins.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 The figure is a schematic diagram of the overall structure of a casting mold in one embodiment of the present invention.

[0021] Figure 2 It is a schematic diagram of the overall structure of a casting mold in another embodiment of the present invention.

[0022] Figure 3 It is a schematic diagram of the overall structure of the casting mold in other embodiments of the present invention.

[0023] Figure 4 for Figure 3 Partial cross-sectional view of the casting mold.

[0024] Figure 5 The present invention is a schematic structural diagram of a bellows positioning assembly including a fixed plate with a constant length according to an embodiment of the present invention.

[0025] Figure 6 The present invention is a schematic structural diagram of a bellows positioning assembly including a fixing plate composed of a slide rail and a slide plate according to an embodiment of the present invention.

[0026] Figure 7 It is a schematic structural diagram of a bottom mold according to an embodiment of the present invention.

[0027] Figure 8 for Figure 6 Schematic diagram of the local enlarged structure of area I in the middle.

[0028] Reference numerals:

[0029] Casting mold 100;

[0030] Bottom mold 1; lifting hole 11; connecting piece 12;

[0031] Inner and outer mold assembly 2; inner mold plate 21a; outer mold plate 21b; inner mold plate 211; outer mold plate 212; support rib 22;

[0032] Bellows positioning assembly 3;

[0033] Fixed plate 31; slide rail 311; slide groove 3111; slide plate 312; positioning hole 313;

[0034] Bellows fixing hole 32;

[0035] Positioning rod 33;

[0036] Column 34;

[0037] Positioning pin 4;

[0038] Casting cavity 5;

[0039] Bellows 6;

[0040] Feeding device 7; hopper trough 71. DETAILED DESCRIPTION

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "length", "thickness", "up", "down", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] The bellows positioning assembly 3 for tower casting according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0044] According to an embodiment of the present invention, a bellows positioning assembly 3 for tower casting is provided. Figure 1 and Figure 2 As shown, it includes: a fixing plate 31 and a positioning rod 33.

[0045] The fixing plate 31 is suitable for being arranged on the top of the casting cavity 5 of the prefabricated tower tube, and the fixing plate 31 is provided with a bellows fixing hole 32. The bellows fixing hole 32 is mainly used for installing and positioning the bellows 6.

[0046] like Figure 1 As shown, there are multiple fixing plates 31, and the multiple fixing plates 31 are arranged radially, and the ends of the multiple fixing plates 31 facing each other are connected. That is, the ends of the multiple fixing plates 31 that are close to each other are connected. Here, the ends of the multiple fixing plates 31 can be directly connected to each other, such as processed into an integrated type; another is that the ends of the multiple fixing plates 31 are indirectly connected through other structures, such as being fixed together on a structural member at the center of the radiation. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0047] Continue to refer to Figure 1 and Figure 2As shown, the positioning rod 33 is partially inserted into the bellows fixing hole 32 and partially extends below the fixing plate 31. The positioning rod 33 is detachably connected to the fixing plate 31, and the positioning rod 33 is used to cover the bellows 6. The positioning rod 33 can be detachably connected to the fixing plate 31 in the form of: a threaded hole is set on the top of the positioning rod 33, and a screw is used for connection; the positioning rod 33 and the fixing plate 31 can also be fixed by a clamping or plugging method; or an interference fit can be used, which is not specifically limited here.

[0048] As can be seen from the above structure, the bellows positioning assembly 3 for tower casting of the embodiment of the present invention is provided with a plurality of radial fixing plates 31 connected at one end, so that one end of the fixing plate 31 is fixed relative to the position of the casting cavity 5, and the other end forms a free end and is respectively arranged at the top of the casting cavity 5. The plurality of fixing plates 31 can be simultaneously arranged at multiple positions of the same casting cavity 5, which is convenient for simultaneously arranging a plurality of bellows 6 in a casting cavity 5, and the supporting efficiency of the bellows 6 is high. In addition, since one end of the fixing plate 31 is connected, the connection ends of the plurality of fixing plates 31 are stable and not easy to move.

[0049] The positioning rod 33 can be inserted into the bellows fixing hole 32 on the fixing plate 31 and then inserted into the bellows 6 (the structure of the bellows 6 is shown in FIG. Figure 4 As shown), a relatively fixed position is provided for arranging the bellows 6 in the casting cavity 5, and the positioning of the bellows 6 is also fast, and the arrangement of the bellows 6 does not need to rely too much on the side template.

[0050] When the positioning rod 33 is detachably connected to the fixing plate 31, on the one hand, the positioning rod 33 provides longitudinal support for the fixing plate 31, so that the fixing plate 31 is stably arranged on the top of the casting cavity 5; on the other hand, after the bellows 6 is sleeved on the positioning rod 33 arranged in the bellows fixing hole 32, the bellows 6 arranged in the casting cavity 5 can be stabilized, and the arrangement path of the bellows 6 can also be guided. The inside of the bellows 6 is supported by the positioning rod 33, so that the bellows 6 has sufficient anti-deformation force, and the bellows 6 is less affected by the extrusion deformation of the inner and outer side templates.

[0051] It is understandable that, compared with the structure in the prior art in which the bellows is attached and connected to the side mold, the support of the bellows 6 of the present invention does not rely too much on the side mold, and there is no need to open a connection hole on the side mold. In addition, the bellows 6 of the present invention can be quickly positioned through the bellows fixing hole 32 on the fixing plate 31, and the bellows 6 is sleeved on the positioning rod 33, which can significantly increase the anti-deformation force of the bellows 6 and effectively prevent the bellows 6 from being displaced.

[0052] In some embodiments of the present invention, Figure 1 , Figure 2 and Figure 3As shown, the bellows positioning assembly 3 also includes a column 34. The casting cavity 5 surrounds the outer side of the column 34, and the fixed plates 31 are radially arranged relative to the column 34, and the ends of the plurality of fixed plates 31 facing each other are connected to the column 34. Thus, the column 34 connects the ends of all the fixed plates 31, so that the ends of the plurality of fixed plates 31 are supported by the column 34, without having to put all the weight on the casting cavity 5 and the side wall mold. During the casting process, each fixed plate 31 is less affected by the extrusion deformation of the inner and outer mold assemblies 2.

[0053] Optional, such as Figure 3 As shown, the casting cavity 5 is formed in an annular shape and has a reference central axis OO', the central axis of the column 34 coincides with the reference central axis OO', and a plurality of fixing plates 31 are evenly spaced around the column 34 in the circumferential direction, that is, the angles between two adjacent fixing plates 31 are equal. The fixing plates 31 on the annular casting cavity 5 are evenly arranged in the circumferential direction, so that the corrugated pipe 6 connected to the fixing plate 31 is evenly arranged in the casting cavity 5. When the wind power tower is constructed in the later stage, the addition of prestressed ribs in the corrugated pipe 6 is conducive to the stability of the entire concrete tower and makes the strength of the entire concrete tower high enough.

[0054] Of course, in other examples, the fixing plates 31 of the present invention may be arranged non-uniformly in the circumferential direction of the column 34, that is, the angles between adjacent fixing plates 31 may be unequal, such as where more bellows 6 need to be supported, the angles between adjacent fixing plates 31 are smaller; and where fewer bellows 6 need to be supported, the angles between adjacent fixing plates 31 are larger. No specific limitation is made here.

[0055] Optional, see Figure 1 , Figure 2 and Figure 3 As shown in , each fixing plate 31 is provided with a plurality of bellows fixing holes 32 along the circumferential direction. The plurality of bellows fixing holes 32 arranged along the circumferential direction are all located on the same casting cavity 5, so as to facilitate the centralized arrangement of a plurality of bellows 6 at multiple locations in the casting cavity 5, so as to facilitate the addition of prestressed tendons at various construction stages when constructing the wind power tower in the later stage.

[0056] Optional, see Figure 1 , Figure 2 and Figure 3As shown in , each fixing plate 31 is provided with a plurality of groups of bellows fixing holes 32 at intervals along the length direction. Thus, the same group of bellows positioning assemblies 3 can adapt to the casting of concrete towers or concrete tower pieces of different sizes without replacing the bellows positioning assemblies 3. In addition, in some examples, when a plurality of casting cavities 5 are arranged at intervals under the fixing plate 31, a plurality of casting cavities 5 can be provided with bellows 6 at the same time, so that the required bellows 6 can be supported at the same time when casting a plurality of casting cavities 5. This saves layout space, saves the input amount of the bellows positioning assemblies 3, and improves the prefabrication efficiency of the concrete tower or concrete tower piece.

[0057] In some embodiments of the present invention, Figure 2 , Figure 3 and Figure 6 As shown, each fixed plate 31 includes: two slide rails 311 and a slide plate 312. The slide plate 312 is adjustably fitted between the two slide rails 311, and the bellows fixing hole 32 is provided on the slide plate 312. That is, the slide plate 312 in this structure can be adjusted on the slide rail 311 to move away from or close to the connection end of the fixed plate 31. It can be understood that as long as the length of the slide rail 311 is appropriate, the slide plate 312 can be adjusted to a specific stop position on the slide rail 311 to adapt to the casting of concrete towers or concrete tower segments of various sizes and models.

[0058] Since the fixed plate 31 is composed of the slide rail 311 and the slide plate 312, the slide plate 312 does not need to be set longer to adapt to the casting of concrete tower tubes or concrete tower pieces of various sizes. On the contrary, the length of a single slide plate 312 only needs to be greater than the wall thickness of the casting cavity 5, so as to meet the need of setting the corrugated pipe 6 in the casting cavity 5. Therefore, compared with the fixed plate 31 of a longer length and cannot be moved, the present invention adopts the above-mentioned slide plate 312 of appropriate length and the slide rail 311 of sufficient length, and the overall weight is lighter, and the movement of the slide plate 312 is more flexible. When casting, the position of the slide plate 312 on the slide rail 311 can be quickly adjusted so that the slide plate 312 is directly opposite to the casting cavity 5 and supports the corrugated pipe 6.

[0059] In addition, there is no need to open too many bellows fixing holes 32 on the slide plate 312. By moving the position of the slide plate 312 on the slide rail 311, the bellows fixing holes 32 can be stopped at the top of the casting cavity 5 at different positions, which is flexible to adjust and has strong adaptability.

[0060] Optional, such as Figure 6 and Figure 8 As shown, the two sides of the two slide rails 311 facing each other form a slide groove 3111, and the opposite sides of the slide plate 312 are fitted in the slide groove 3111. The slide rail 311 not only provides a guide for the slide plate 312, but also provides support for the slide plate 312.

[0061] In some examples, the slide plate 312 is positioned in cooperation with the slide rail 311, for example, a plurality of stoppers are provided on the slide rail 311, and when the slide plate 312 slides to a specific position, the stoppers stop on the slide plate 312 or on the side of the slide plate 312. For another example, both the slide rail 311 and the slide plate 312 are provided with through holes, and when sliding to a specific position, the through holes of the two are aligned, and the positioning members are inserted to form a stop.

[0062] In some examples, the slide rail 311 is positioned in cooperation with the side wall mold of the casting cavity 5 .

[0063] Specifically, Figure 4 As shown, the fixing plate 31 is provided with a positioning hole 313 and a positioning pin 4 inserted into the positioning hole 313, and the positioning pin 4 is used to cooperate with the side wall mold of the casting cavity 5. When the fixing plate 31 is positioned on the side wall mold of the casting cavity 5, the top connection strength of the side wall mold can be increased, and a better support can be formed for the top of the side wall mold, which effectively prevents the deformation of the top of the side wall mold during the casting process, and can also effectively prevent the deformation of the side wall mold from affecting the extrusion of the corrugated pipe 6.

[0064] Optionally, a plurality of bellows fixing holes 32 are provided on each slide plate 312 in the circumferential direction, so that a plurality of bellows 6 are provided at the same position in the casting cavity 5 .

[0065] Of course, in other examples, such as Figure 1 and Figure 5 As shown, the fixing plate 31 is formed as a plate-like body with a constant length. One end of the plate-like body is connected to the column 34. A plurality of groups of corrugated pipe fixing holes 32 are provided on the plate-like body along the length direction, so as to adapt to casting cavities 5 of various sizes and to connect the plate-like body to multiple casting cavities 5 at the same time. In addition, when multiple casting cavities 5 are arranged at intervals on the periphery of the column 34, the plate-like body can also be fixed on the top of the multiple casting cavities 5, and the top connection of each pair of inner templates 21a and outer templates 21b can be increased, so as to further support the side molds on both sides of the casting cavity 5, increase the top strength of the casting mold 100, and further reduce the extrusion deformation of the casting mold 100 caused by the pressure generated during casting.

[0066] A casting mold 100 for a prefabricated tower tube according to an embodiment of the present invention will be described below with reference to the accompanying drawings. The mold comprises: a bottom mold 1, inner and outer mold assemblies 2 and a bellows positioning assembly 3.

[0067] Among them, Figure 1 , Figure 2 and Figure 3As shown, the inner and outer mold assembly 2 includes at least one pair of inner mold plates 21a and outer mold plates 21b spaced apart from each other, and a casting cavity 5 is formed between each pair of inner mold plates 21a and outer mold plates 21b and the bottom mold 1, and the inner side wall of each casting cavity 5 is constructed by the inner mold plate 21a, the outer side wall of each casting cavity 5 is constructed by the outer mold plate 21b, and the bottom wall of each casting cavity 5 is constructed by the bottom mold 1. When the inner and outer mold assembly 2 forms a pair of inner mold plates 21a and outer mold plates 21b spaced apart from each other, a casting cavity 5 is formed between the pair of inner mold plates 21a and outer mold plates 21b. When the inner and outer mold assembly 2 is formed into multiple pairs of inner mold plates 21a and outer mold plates 21b, multiple casting cavities 5 formed between the multiple pairs of inner mold plates 21a and outer mold plates 21b are arranged spaced apart in sequence along the radial direction. For example, in some examples, two pairs of inner mold plates 21a and outer mold plates 21b are spaced apart in sequence around the column 34, so as to form two casting cavities 5 spaced apart in the radial direction.

[0068] like Figure 4 As shown, when multiple pairs of inner templates 21a and outer templates 21b form multiple casting cavities 5 spaced apart in the radial direction, the inner template 21a between two adjacent casting cavities 5 is the side wall (inner wall) of the casting cavity 5 away from the reference center axis OO', and the outer template 21b between two adjacent casting cavities 5 is the side wall (outer wall) of the casting cavity 5 close to the reference center axis OO'.

[0069] Favorable, such as Figure 4 As shown, the inner template 21a and the outer template 21b between two adjacent casting cavities 5 are connected by adding a fixing piece, and the inner template 21a and the outer template 21b are respectively provided with overlapping edges, and the overlapping edges are overlapped and then connected by the fixing piece, so that the inner template 21a and the outer template 21b between the two adjacent casting cavities 5 are more stable and not easy to be skewed after being subjected to force.

[0070] Specifically, the longitudinal sections of the inner template 21a and the outer template 21b are formed into a semi-enclosed gate-shaped template frame, and the two gate-shaped template frames are arranged relative to each other to form a partition wall of adjacent casting cavities 5 with a frame-shaped longitudinal section. It is convenient to support the inner template 21a and the outer template 21b between two adjacent casting cavities 5, and it is also convenient for processing, and it is more conducive to arranging and forming a plurality of casting cavities 5 spaced apart in the radial direction.

[0071] In some examples, the casting cavity 5 is annular to cast a concrete tower cylinder. In other examples, the casting cavity 5 is arc-shaped to cast a concrete tower segment.

[0072] The bellows positioning assembly 3 is the aforementioned bellows positioning assembly 3 used for tower casting, and the structure of the bellows positioning assembly 3 is not described in detail here.

[0073] like Figure 1 , Figure 2 and Figure 3As shown, a plurality of fixing plates 31 are arranged on the inner and outer mold assemblies 2 , and the positioning rods 33 extend into the casting cavity 5 .

[0074] As can be seen from the above structure, the casting mold 100 of the prefabricated tower tube of the embodiment of the present invention supports the corrugated pipe 6 in the casting cavity 5 for casting the annular concrete tower tube or concrete tower piece, the fixing plate 31 is set on the inner and outer mold components 2, and the positioning rod 33 extends into the casting cavity 5. The positioning rod 33 and / or the top of the inner and outer mold components 2 form a certain support for the fixing plate 31, and the fixing plate 31 is fixed on the top of the inner and outer mold components 2, which in turn enhances the top connection strength of the inner and outer mold components 2, and has a good effect of preventing deformation. After the corrugated pipe 6 is sleeved on the positioning rod 33, since the inner and outer mold components 2 are not easy to deform, the corrugated pipe 6 in the casting cavity 5 is not easy to deform and will not be displaced after being squeezed.

[0075] like Figure 1 and Figure 2 As shown, when a pair of inner templates 21a and outer templates 21b are provided, only one casting cavity 5 is formed. At this time, the molds of the two side walls of the casting cavity 5 are respectively recorded as the inner template 211 and the outer template 212, wherein the side wall mold located on the inner side (such as near the column 34) is recorded as the inner template 211, and the side wall mold located on the outer side (such as far away from the column 34) is recorded as the outer template 212. The distance between the inner template 211 and the outer template 212 determines the thickness of the casting cavity 5. The inner template 211 and the outer template 212 can select appropriate thicknesses to increase their own anti-deformation ability.

[0076] Optionally, the inner template 211 located at the innermost layer and the outer template 212 located at the outermost layer are respectively provided with a plurality of support ribs 22 along the circumferential direction (the structure of the support ribs 22 is shown in FIG. Figure 2 As shown), the inner template 211 and the outer template 212 have their own structural strengths, and are easy to cooperate with the external support structure, so that the entire casting mold 100 is effectively supported to prevent large deformation during the casting process.

[0077] In some embodiments of the present invention, Figure 3As shown, the inner and outer mold assembly 2 includes at least two pairs of inner molds 21a and outer molds 21b, and the multiple casting cavities 5 formed by the at least two pairs of inner molds 21a and outer molds 21b and the bottom mold 1 are arranged in sequence along the radial direction. The outer molds 21b between two adjacent casting cavities 5 constitute the outer side wall of the casting cavity 5 on the radial inner side, and the inner molds 21a between two adjacent casting cavities 5 constitute the inner side wall of the casting cavity 5 on the radial outer side. When the above inner and outer mold assembly 2 is used, at least two groups can be cast at the same time when casting a concrete tower or concrete tower segment, and the casting is fast, saving the construction space required. It can be understood that by adjusting the distance between the inner mold 21a and the outer mold 21b between two adjacent casting cavities 5, the spacing distance between the two casting cavities 5 can be adjusted, thereby adjusting the radial size of the cast separated concrete tower, or adjusting the radial size of the separated concrete tower segments after enclosing the tower.

[0078] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the fixing plate 31 is matched with the inner and outer mold assembly 2 through the positioning pin 4. Therefore, the fixing plate 31 is fixed with the inner and outer mold assembly 2, which can form a good support for the inner and outer mold assembly 2, effectively prevent the inner and outer mold assembly 2 from deforming during the pouring process, and further reduce the influence of the extrusion force formed by the inner and outer mold assembly 2 during the pouring process on the bellows 6.

[0079] In some embodiments of the present invention, Figure 7 As shown, a lifting hole 11 is provided on the bottom mold 1 corresponding to the casting cavity 5, and a lifting mechanism is provided below the casting cavity 5, and the lifting mechanism has a lifting rod that can extend to the casting cavity 5 through the lifting hole 11. In this way, after concrete is poured into the casting cavity 5, during the demoulding process of the concrete tower barrel or concrete tower segment after forming, the lifting rod extends from the lifting hole 11 into the casting cavity 5, and lifts the bottom of the concrete tower barrel or concrete tower segment, so that the prefabricated concrete tower barrel or concrete tower segment can be quickly demoulded without using lifting equipment.

[0080] Favorable, such as Figure 7 As shown, the lifting holes 11 are arranged at intervals along the radial direction of the bottom mold 1, and the bottom mold 1 is provided with a plurality of lifting holes 11 at equal distances from the reference central axis OO' in the circumferential direction. When demoulding, the lifting rod lifts the concrete tower barrel or concrete tower piece in the casting cavity 5 evenly, so that the prefabricated concrete tower barrel or concrete tower piece is not easy to tilt when demoulding, thereby improving safety.

[0081] Optionally, the bottom mold 1 is a double-layer structure. The upper layer of the bottom mold 1 is connected to the inner and outer mold assemblies 2 to define a casting cavity 5, and the jacking mechanism is connected to the lower layer of the bottom mold 1. Therefore, when the jacking mechanism jacks up the concrete tower barrel or concrete tower segment in the casting cavity 5, the bottom of the jacking mechanism is subjected to the reaction force of the jacking and the gravity of the concrete tower barrel or concrete tower segment, so that the bottom mold 1 is kept at the bottom, which facilitates the separation of the bottom mold 1 from the entire prefabricated concrete tower barrel or concrete tower segment, so that the bottom mold 1 is easy to take off without being attached to the bottom of the concrete tower barrel or concrete tower segment.

[0082] Optionally, the bottom of each pair of inner template 21a and outer template 21b can be detachably connected to the bottom template 1. It is convenient to disassemble the inner template 21a, the outer template 21b and the bottom template 1 and adjust the spacing between the inner template 21a and the outer template 21b.

[0083] Optionally, the bottom of the inner template 21a and the outer template 21b are connected to the bottom mold 1 via a connecting member 12, such as a screw or the aforementioned positioning pin 4.

[0084] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the casting mold 100 further includes a feeding device 7, in which concrete to be cast can be placed, and the feeding device 7 is connected to a hopper trough 71 arranged obliquely downward, and the end of the hopper trough 71 extends toward the top of the casting cavity 5. In this way, the fluid concrete during casting will not stick to other components outside the casting cavity 5, and the casting is fast.

[0085] Optionally, a plurality of hopper troughs 71 are provided, and the plurality of hopper troughs 71 are radially arranged around the feeding device 7. This facilitates the simultaneous injection of concrete into multiple locations in the pouring cavity 5 during pouring, so that the pouring is fast and the material is uniformly fed to each location in the pouring cavity 5.

[0086] To better understand the solution of the embodiment of the present invention, the specific structure of the bellows positioning assembly 3 for tower casting and the specific structure of the casting mold 100 of the prefabricated tower including the bellows positioning assembly 3 are described below by way of specific examples.

[0087] Example 1

[0088] like Figure 1 As shown, a bellows positioning assembly 3 for tower casting includes: a fixing plate 31, a positioning rod 33 and a column 34.

[0089] The column 34 is supported on the reference central axis OO' of the annular casting cavity 5, and a plurality of fixing plates 31 are arranged on the top of the casting cavity 5 of the prefabricated tower tube, and one end of each fixing plate 31 is connected to the column 34, and then combined with Figure 5As shown, each fixing plate 31 is formed as a plate-like body with a constant length, and a plurality of groups of bellows fixing holes 32 are provided on the fixing plate 31 along the length direction. Support ribs 22 are formed on the inner template 21a and the outer template 21b. Positioning rods 33 are detachably connected to the bellows fixing holes 32, and the positioning rods 33 are sleeved with bellows 6.

[0090] A casting mold 100 for a prefabricated tower tube comprises: a bottom mold 1, an inner and outer mold assembly 2, and the above-mentioned bellows positioning assembly 3. Figure 1 As shown, the inner and outer mold assembly 2 includes a pair of annular inner molds 21a and outer molds 21b that are spaced apart, and an annular casting cavity 5 is formed between the inner molds 21a and the outer molds 21b and the bottom mold 1. A plurality of fixed plates 31 are connected to the top of the annular casting cavity 5, and one end of the plurality of fixed plates 31 is connected to the column 34, wherein a group of bellows fixing holes 32 on the fixed plates 31 correspond to the casting cavity 5, and a positioning rod 33 is connected to the bellows fixing holes 32, and the positioning rods 33 are respectively sleeved with bellows 6. The fixed plates 31 are respectively fixed to the tops of the two mold groups by positioning pins 4. Finally, an annular concrete tower with a plurality of bellows 6 is cast. When demolding, the bellows positioning assembly 3 is removed, and the lifting mechanism on the bottom mold 1 extends into the casting cavity 5, and the concrete tower is pushed out of the mold.

[0091] Example 2

[0092] like Figure 2 As shown, a bellows positioning assembly 3 for tower casting includes: a fixing plate 31, a positioning rod 33 and a column 34. Different from the embodiment 1, the bellows positioning assembly 3 for tower casting includes: a fixing plate 31, a positioning rod 33 and a column 34. Figure 6 As shown, each fixing plate 31 in this embodiment includes two slide rails 311 and a slide plate 312. The slide plate 312 is adjustably fitted between the two slide rails 311, and the bellows fixing hole 32 is provided on the slide plate 312. The slide plate 312 is provided with a positioning hole 313, and a positioning rod 33 is detachably connected to the positioning hole 313. The positioning rod 33 is sleeved with a bellows 6.

[0093] A casting mold 100 for a prefabricated tower tube, further referring to Figure 2 As shown, the difference from the first embodiment is that the slide rail 311 is supported on the top of the casting cavity 5, that is, it is mounted on the top of the inner and outer mold components 2, and each slide plate 312 is in the slide groove 3111 of the slide rail 311 (the structure of the slide groove 3111 is as shown in FIG. Figure 6 and 8 ) to the upper part of the casting cavity 5, and the positioning pins 4 are used to position the slide plate 312 on the top of the inner template 21a and the outer template 21b. The inner template 21a and the outer template 21b are formed with support ribs 22. After that, the positioning rods 33 are connected to the positioning holes 313 on each slide plate 312, and the corrugated pipe 6 is sleeved, and then casting can be carried out. Finally, a ring-shaped concrete tower will be formed.

[0094] Example 3

[0095] like Figure 2 and Figure 6 As shown, a bellows positioning assembly 3 for tower casting includes: a fixing plate 31, a positioning rod 33 and a column 34. The structure of the bellows positioning assembly 3 is the same as that in the second embodiment.

[0096] A casting mold 100 for a prefabricated tower tube, such as Figure 3 As shown in , different from Example 2, the inner and outer mold assembly 2 includes two pairs of inner mold plates 21a and outer mold plates 21b spaced apart in the radial direction to define two casting cavities 5, and the two casting cavities 5 are spaced apart in the thickness direction. When casting the concrete tower, the slide plate 312 is slid onto the two casting cavities 5 respectively for fixing and casting. Specifically, all the slide plates 312 are first slid to the upper part of the casting cavity 5 of the inner layer, and the slide plates 312 are fixed to the top of the inner mold plates 21a and the outer mold plates 21b on both sides of the casting cavity 5 of this layer, and the positioning rods 33 are connected and the corrugated pipe 6 is sleeved to cast. After that, the fixation of the slide plate 312 to the inner mold plates 21a and the outer mold plates 21b is cancelled, and the slide plate 312 is continued to slide to the top of the next casting cavity 5, and the slide plate 312 is fixed to the inner mold plates 21a and the outer mold plates 21b of the casting cavity 5 of the outer layer, and the positioning rods 33 are connected in the fixing holes 32 of the corrugated pipes and the corrugated pipes 6 are sleeved to cast. After that, the bellows positioning assembly 3 is removed, and the lifting mechanism on the bottom mold 1 pushes the concrete towers in each casting cavity 5 upward, so that the casting of multiple concrete towers can be completed.

[0097] The annular casting cavity 5 in the above-mentioned embodiments 1, 2 and 3 can be replaced with a segmented casting cavity, that is, each annular inner template 21a and outer template 21b are replaced with a segmented inner template 21a and outer template 21b, and each segmented template can be spliced ​​to form an annular inner template 21a and outer template 21b. The segmented inner template 21a and outer template 21b can be used to prefabricate segmented concrete tower pieces.

[0098] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0099] Figure 1 , Figure 2 , Figure 3Four fixing plates 31 are shown for illustrative purposes, but after reading the above technical solution, ordinary technicians can obviously understand that the solution can be applied to technical solutions with other numbers of fixing plates 31, which also falls within the scope of protection of the present invention.

[0100] The bellows positioning assembly 3 for tower casting and other components of the casting mold 100 of the prefabricated tower according to the embodiment of the present invention, such as the specific setting method and size selection of the bellows 6, are well known to ordinary technicians in the field and will not be described in detail here.

[0101] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0102] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A bellows positioning assembly for tower casting, characterized in that: include: A fixing plate, wherein the fixing plate is suitable for being arranged at the top of the casting cavity of the prefabricated tower tube, the fixing plate is provided with a bellows fixing hole, there are a plurality of fixing plates, the plurality of fixing plates are radially arranged, the ends of the plurality of fixing plates facing each other are connected, and each of the fixing plates is provided with a plurality of groups of the bellows fixing holes at intervals along the length direction, each of the fixing plates comprises a slide plate and two slide rails, the slide plate can be adjustably fitted between the two slide rails, the bellows fixing hole is arranged on the slide plate, a slide groove is formed on the sides of the two slide rails facing each other, and the opposite sides of the slide plate are fitted in the slide groove, the slide plate is matched with the slide rail or the side wall mold of the casting cavity for positioning, the fixing plate is provided with a positioning hole and a positioning pin inserted in the positioning hole, and the positioning pin is used to fit on the side wall mold of the casting cavity; A positioning rod, wherein a portion of the positioning rod is passed through the fixing hole of the corrugated pipe and a portion of the positioning rod extends below the fixing plate. The positioning rod is detachably connected to the fixing plate and is used to cover the corrugated pipe.

2. The bellows positioning assembly for tower casting according to claim 1, characterized in that: It also includes a column, the casting cavity surrounds the outer side of the column, the fixing plates are radially arranged relative to the column, and the ends of the fixing plates facing each other are connected to the column.

3. The bellows positioning assembly for tower casting according to claim 2, characterized in that: The plurality of fixing plates are evenly arranged around the column, and each of the fixing plates is provided with a plurality of bellows fixing holes along the circumferential direction.

4. A casting mold for a prefabricated tower, characterized in that: include: Bottom mold; An inner and outer mold assembly, the inner and outer mold assembly comprising at least one pair of inner and outer molds spaced apart and arranged opposite to each other, a casting cavity is formed between each pair of the inner and outer molds and the bottom mold, the inner side wall of each casting cavity is constructed by the inner mold, the outer side wall of each casting cavity is constructed by the outer mold, the bottom wall of each casting cavity is constructed by the bottom mold, and the casting cavity is annular or arc-shaped to cast a concrete tower tube or concrete tower segment; A bellows positioning assembly, wherein the bellows positioning assembly is a bellows positioning assembly for tower casting according to any one of claims 1-3, wherein a plurality of the fixing plates are arranged on the inner and outer mold assemblies, and the positioning rod extends into the casting cavity.

5. The casting mold for the prefabricated tower tube according to claim 4, characterized in that: The inner and outer mold assemblies include multiple pairs of inner molds and outer molds. The multiple casting cavities formed by the multiple pairs of inner molds and outer molds and the bottom mold are arranged in sequence and spaced apart in the radial direction. The inner mold between two adjacent casting cavities constitutes the inner side wall of the casting cavity on the radial outside, and the outer mold between two adjacent casting cavities constitutes the outer side wall of the casting cavity on the radial inside.

6. The casting mold for the prefabricated tower tube according to claim 4, characterized in that: The fixing plate is matched with the inner and outer mold components through positioning pins.

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