CN212146901U - Die set - Google Patents

Abstract

The utility model provides a mould set, more than two bottom moulds which are arranged in sequence along the transverse direction, wherein the upper part of each bottom mould is open and is longitudinally provided with a coarse mould cavity section and a fine mould cavity section which are arranged in sequence in an alternating way, and the fine mould cavity section is used for molding a fine pile section of a variable cross-section precast pile; the top moulds are movably and transversely erected at the tops of the more than two bottom moulds and used for forming a thick pile section of the variable-section precast pile together with the thick mould cavity section; and when the top die transversely covers the top of the bottom die, the forming cavity of the top die is communicated with the coarse die cavity section. The utility model discloses a set up die block more than two and transversely erect the top mould at die block top more than two, make mould group make many pile shafts all have concave-convex structure's variable cross section precast pile all around in one shot production process.

Description

Die set

Technical Field

The utility model relates to a precast pile mould technical field especially relates to a mould group for making variable cross section precast pile.

Background

Under the general condition, the reinforced concrete precast pile is a round pile or a polygonal pile which is precast by a mould in a factory and then is transported to the place where the pile is located, and the precast pile has the advantages of stronger load capacity, smaller settlement deformation, simple and convenient construction, low manufacturing cost, higher efficiency and the like in the practical application process, so that the precast pile is used in a large amount in pile foundation engineering. The existing concrete precast pile is generally a straight pile with the same cross section shape and size, but the precast pile generally has the problems of large concrete consumption and low side friction resistance, which leads to poor uplift bearing capacity due to small specific surface area.

In view of the above problems, the prior art provides a solid pile with a variable cross section, in which the size and shape of the cross section of the pile body vary along the length of the pile, and the pile with such a structural form has better resistance to pulling and bearing performance than the ordinary straight pile, and is more and more favored by the construction industry. The method comprises the following steps of producing the variable-section solid pile, wherein a mould for correspondingly forming the variable-section solid pile is needed, at least one regular polygon rough hole section and at least one regular polygon fine hole section are formed in a long mould cavity of the mould along the length direction, and the regular polygon rough hole section is communicated with the regular polygon fine hole section; the hole wall of the regular polygon fine hole section is provided with at least one groove, and the length direction of the groove is consistent with the length direction of the die; and the die is arranged in the cross section of the regular polygon rough hole section to form the variable cross-section solid pile with the regular polygon cross section.

The mould for forming the variable cross-section solid pile is characterized in that concrete is added into a long mould cavity in a material distribution mode to produce the pile, the concrete is pressed down by an upper mould plate of the mould or one surface of the pile corresponding to a top mould plate of the mould so as to expect to make the top surface of the pile into a concave-convex surface, although the top mould plate of the mould can press down the long mould cavity to obtain compact concrete, the top surface of the pile cannot form the concave-convex surface meeting the design quality requirement in practice, related technicians can only reduce the requirement on the variable cross-section solid pile aiming at the phenomenon, the surface of the top mould plate opposite to the long mould cavity is made into a flat surface, the variable cross-section solid pile with one surface being a plane is prepared by the mould, so that a proper mould is not produced for many years, the variable cross-section solid pile with the concave-convex surface (the surface opposite to the upper mould plate or the top mould plate of the mould) can be made after being, in addition, the mould can only produce one variable cross-section solid pile in one-time production process, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's is not enough, provides a variable cross section precast pile mould group, and this variable cross section precast pile mould group can make many pile shafts all have concave-convex structure's variable cross section precast pile all around in one shot production process.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a die set, comprising:

more than two bottom moulds which are arranged in sequence along the transverse direction, wherein the upper part of each bottom mould is open, and a coarse mould cavity section and a fine mould cavity section which are arranged in sequence and alternately are formed in the longitudinal direction, and the fine mould cavity section is used for forming a fine pile section of the variable cross-section precast pile; and

the top moulds are movably and transversely erected at the tops of more than two bottom moulds and used for forming a thick pile section of the variable-section precast pile together with the thick mould cavity section;

and when the top die transversely covers the top of the bottom die, the forming cavity of the top die is communicated with the coarse die cavity section.

Preferably, the bottom die comprises an outer die and a plurality of inner modeling dies, and the inner modeling dies are longitudinally arranged in the outer die at intervals to form the fine die cavity section;

the top dies in the transverse direction and/or the longitudinal direction are connected with each other to form an integral structure;

preferably, two top molds which are adjacent in the transverse direction and/or the longitudinal direction are connected through a connecting rod, a connecting hole is formed in the connecting rod, a positioning hole corresponding to the connecting hole is formed in the top of the outer mold, and the connecting rod is fixedly connected to the top of the outer mold through a fastener.

Preferably, the molding cavity of the top mold protrudes out of the coarse mold cavity section, and the inner molding molds and the top molds are alternately arranged in the longitudinal direction of the outer mold;

preferably, the forming cavity of the top die is formed with a drawing surface, and/or the forming cavity of the inner forming die is formed with a drawing surface.

Preferably, one transverse end of the top die is hinged with the top of the outer die on the transverse most side, and the other transverse end of the top die is detachably connected and fixed with the top of the outer die on the other side;

preferably, at least part of the top molds are provided with concrete distributing openings.

Preferably, the mould also comprises a mould frame which is formed by detachably connecting at least one pair of transverse beams and at least one pair of longitudinal beams and has an opening at the upper part, the outer moulds are sequentially and transversely arranged in the mould frame, and the longitudinal length of each outer mould is less than or equal to the longitudinal inner length of the mould frame;

preferably, the inner wall and/or the bottom of the mold frame is/are provided with a steam channel;

preferably, the outer die is provided with a steam channel.

Preferably, the connecting plate is fixedly connected with the end part of the transverse beam by a plurality of fasteners distributed at intervals, and/or the connecting plate is fixedly connected with the end part of the longitudinal beam by a plurality of fasteners distributed at intervals;

or the end part of the transverse beam is clamped and fixed or joggled and fixed with the end part of the longitudinal beam.

Preferably, a plurality of elongated tensioning adjusting holes which correspond to the outer molds one by one are arranged on the transverse beam at intervals along the transverse direction, and the tensioning adjusting holes are communicated with the outer molds.

Preferably, the top of the longitudinal beam is provided with a longitudinal material distribution rail for the material distribution trolley to longitudinally advance along the longitudinal direction;

and/or a transverse material distribution rail for the material distribution trolley to transversely advance is transversely arranged at the top of the transverse beam.

Preferably, a heat-insulating covering structure for covering the upper opening is arranged above the mold frame;

preferably, the edges of the transverse beam and the longitudinal beam close to the mould frame are provided with a water tank which is enclosed to be matched with the heat-insulating covering structure, and the heat-insulating covering structure covers the water tank.

Preferably, a coarse mold cavity section is formed at one longitudinal end of the bottom mold, and the longitudinal length of the coarse mold cavity section located at the longitudinal end of the bottom mold is greater than the longitudinal length of the coarse mold cavity section between any two fine mold cavity sections;

and the forming cavities of the top die positioned at the longitudinal end parts of the bottom die are matched with the longitudinal length of the coarse die cavity section positioned at the longitudinal end part of the bottom die.

The utility model has the advantages that: make the precast pile form thick stake section and thin stake section through the cooperation between top mould and the die block to the setting of top mould can make the mould produce the variable cross section precast pile that has the upper surface unsmooth, area of contact between increase precast pile and the soil layer improves the frictional force between precast pile and the soil layer, thereby improves the bearing capacity of precast pile, and set up the die block more than two in the mould group, make the mould group can produce many variable cross section precast piles in a production process, improve production efficiency. In addition, the top die is transversely erected on the tops of more than two outer dies, a protrusion can be formed on each outer die by using one top die, and the top die at the top of the outer dies can be removed at one time without removing the top dies positioned on the same transverse direction at the top of the outer dies one by one when the variable cross-section precast pile is demoulded, so that the production efficiency is improved on the premise of ensuring the forming quality of the variable cross-section precast pile.

Drawings

Fig. 1 is a schematic structural diagram of a mold set according to an embodiment of the present invention;

fig. 2 is a top view of a die set according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a schematic structural view of an inner mold according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a top mold according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the technical solutions of the present invention, the following detailed description is made with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, 2 and 3, the utility model provides a mold set, which comprises more than two bottom molds 10 arranged in sequence along the transverse direction, wherein the upper part of each bottom mold 10 is open and is longitudinally formed with a coarse mold cavity section 11 and a fine mold cavity section 12 which are arranged in sequence and alternately, and the fine mold cavity section 12 is used for molding a fine pile section of a precast pile with a variable cross section; the top moulds 3 are arranged at intervals along the longitudinal direction, and each top mould 3 can be movably and transversely erected on the tops of more than two bottom moulds 10 and is used for forming a thick pile section of the variable-section precast pile together with the thick mould cavity section 11; when the top die 3 transversely covers the top of the bottom die 10, the forming cavity of the top die 3 is communicated with the coarse die cavity section 11. (in this embodiment, the longitudinal direction of the outer mold is taken as the longitudinal direction, and the width direction of the outer mold is taken as the lateral direction)

In the structure, more than two bottom moulds can enable the mould set to produce a plurality of precast piles with variable cross sections in one production process, so that the production efficiency is improved. In addition, the inner wall of the bottom mold 10 may be formed with protrusions to form the fine cavity sections 12, so that the side surfaces and the bottom surface of the fabricated pile are formed with concave surfaces to form the fine pile sections, and thus, for the portions where the protrusions are not formed, the coarse cavity sections 11 are inevitably formed, so that the side surfaces and the bottom surface of the fabricated pile are formed with the coarse pile sections.

Further, the bottom mold 10 includes an outer mold 1 and a plurality of inner molds 2, and each of the inner molds 2 is longitudinally disposed in the outer mold 1 at a distance to form the thin mold cavity segment 12. The inner modeling die 2 can also be made into a split structure with the outer die 1 in a splicing or splicing mode, so that the inner modeling die 2 can move randomly along the inner wall of the outer die 1 to form the variable cross-section precast pile with different positions of the thin pile section or the thick pile section on the variable cross-section precast pile.

In addition, the outer die 1 can also be formed by splicing a plurality of short die sections in sequence in the longitudinal direction. The length of the outer die can be reasonably adjusted according to production requirements conveniently through the structural design, and the inner modeling die 2 and the outer die 1 can also be connected and fixed in an embedding and fastener locking mode. The universality of the die set is improved.

In addition, because the structure of the upper surface of the produced precast pile needs to be the same as that of other surfaces, and therefore, a protrusion is formed on the upper surface of the precast pile, a top die 3 needs to be arranged on the top of the outer die 1, the top die 3 is transversely erected on the tops of more than two outer dies, one protrusion can be formed on each outer die by using one top die 3, and because the top die 3 needs to be removed from the outer dies when the precast pile with the variable cross section is demolded, the top die 3 can be removed at one time without removing the top dies 3 one by one, so that the production efficiency is improved.

Further, the top molds 3 in the transverse direction and/or the longitudinal direction are connected to each other as an integral structure.

In the structure, the top dies 3 in the transverse direction and the longitudinal direction can be connected into a whole, and after production is finished, all the top dies 3 on the top of each external die 1 can be directly removed at one time, so that the working efficiency of removing the top dies 3 is further improved.

Specifically, two top dies 3 which are adjacent in the transverse direction and/or the longitudinal direction are connected through a connecting rod 4, so that the top dies 3 arranged at the top of the outer die 1 are connected into an integral structure, the top dies 3 can be lifted only by one process, and the production efficiency is further improved. In the actual production process, the length of the outer die 1 in the longitudinal direction or the transverse direction is usually longer, in order to ensure the connection stability of the top die 3, a connecting hole is arranged on the connecting rod 4, a positioning hole corresponding to the connecting hole is formed in the top of the outer die 1, and the connecting rod 4 is fixedly connected to the top of the outer die 1 through a fastener.

Further, the molding cavity of the top mold 3 protrudes from the rough cavity section 11, and the inner molding molds 2 and the top molds 3 are alternately arranged in the longitudinal direction of the outer mold 1. In order to make the force applied to the precast pile uniform, the protruding position formed on the upper surface and the protruding position on the other surface need to be located in the same circumferential direction, so that in the above structure, when each top mold 3 transversely covers the tops of more than two outer molds 1, each forming cavity of the top mold 3 is in one-to-one correspondence with the coarse mold cavity section 11 and protrudes out of the coarse mold cavity section 11, and meanwhile, the forming cavity of the top mold 3 is matched with the surface of the coarse mold cavity section 11 where the inner forming mold 2 is not arranged, so that the top mold 3 and each outer mold 1 jointly form the coarse pile section. In this embodiment, when the top die 3 is transversely covered on the top of the outer die 1, the protrusion thickness of the inner modeling die 2 relative to the coarse die cavity section 11 is equal to or approximately equal to the protrusion height of the molding cavity of the top die 3, so as to form the variable cross-section precast pile with the uniform concave-convex height of each surface, thereby forming a thin pile section and a thick pile section with the cross-sectional areas scaled based on the central axis.

In order to facilitate the disassembly of the top die 3 on the outer die 1, one transverse end of the top die 3 is hinged with the top of the outer die 1 on the transverse outermost side, so that the top die 3 can perform deflection motion around a hinged point, the structure can meet the requirement of the disassembly between the top die 3 and the outer die 1, in the actual production process, the operation is convenient, the first installation part is not required to be disassembled and installed repeatedly, and in order to ensure that the top die 3 is fixedly connected with the top of the outer die 1 on the other side, the other transverse end of the top die 3 is fixedly connected with the top of the outer die 1 on the other side. Of course, the top die 3 can also be lifted to the top of the outer die 1 by lifting tools such as a crane, a traveling crane and the like for installation and disassembly, so that the top die 3 can be provided with a lifting ring.

As shown in fig. 5, in this embodiment, at least a part of the top molds 3 are provided with concrete distributing openings 32, so that when distributing, the distributing device can directly distribute the concrete through the distributing openings 32, thereby increasing the distributing speed in the workshop. Of course, the material distribution port 32 may not be provided, when distributing the material, the concrete material below the top mold 3 is slightly more, and when the concrete is not condensed, the top mold 3 extrudes the concrete material below, so that the concrete material in the molding cavity of the top mold 3 is full.

As shown in fig. 4 and 5, since the precast pile with variable cross section needs to be taken out of the mold after the precast pile with variable cross section is manufactured, and the volume of the precast pile increases after the concrete is solidified, so that the friction force between the precast pile with variable cross section and the mold is large, in order to reduce the friction force, in the present embodiment, the mold cavity of the top mold 3 is formed with the die-drawing surface 21, and similarly, the mold cavity of the inner mold 2 is also formed with the die-drawing surface 21, so that the precast pile with variable cross section can be smoothly taken out of the mold when the precast pile with variable cross section is demolded.

Furthermore, the die set provided by the embodiment further comprises a die frame 7 which is formed by detachably connecting at least one pair of transverse beams 5 and at least one pair of longitudinal beams 6 and is open at the upper part, the outer dies 1 are sequentially and transversely arranged in the die frame 7, and the longitudinal length of each outer die 1 is less than or equal to the longitudinal inner length of the die frame 7.

In the above structure, the size of the mold frame 7 can be adjusted by increasing or decreasing the number of the transverse beams 5 and/or the longitudinal beams 6 according to the length, the width and the number of the external molds 1, so that the enclosed mold frame 7 can accommodate the external molds 1 with different sizes and numbers. Of course, it is also possible to adjust the size of the form 7 by replacing the transverse beams 5 and the longitudinal beams 6 of different lengths. A part of space is reserved between the outer die 1 and the die frame 7, the outer die can be added or replaced within a certain width size range without disassembling the transverse beam 5 and the longitudinal beam 6, and the working efficiency is improved. Meanwhile, the transverse beam 5 and the longitudinal beam 6 are quickly disassembled and moved, so that the limitation to a production site in the production process is reduced.

At present, in the production process of a concrete prefabricated part, a reinforcement cage embedded in concrete needs to be tensioned, and prestress exists in the concrete prefabricated part, so that the structural strength of the prefabricated part is enhanced. And present steel reinforcement cage all adopts one end stretch-draw in the stretch-draw process, the stretch-draw is carried out to the fixed mode of one end, stretch-draw lock nut is in the outside of the tip steel sheet of mould, be provided with the stretch-draw board in the mould, then a tip is connected fixedly with the stretch-draw board with stretch-draw lock nut screw-thread fit's stretch-draw screw, the stretch-draw board can be dismantled with the one end of steel reinforcement cage and be connected, the other end and the fixed plate that sets up at the square pile mould other end of steel reinforcement cage are connected, when stretch-draw, stretch-draw lock nut locking back, stretch-draw lock nut butt is on the tip steel sheet of mould, produced prestressing force and reaction force all are used in on the mould, so require very.

In the embodiment, in order to reduce the cost of the die set, two longitudinal ends of the external die 1 are respectively abutted against one transverse beam 5, the longitudinal beams 6 are respectively arranged at two transverse sides of the external die 1, in the process of prestress tensioning, the prestress for tensioning directly acts on the transverse beams 1, the transverse beams 5 are used for replacing end plates at the end part of the existing die, the prestress cannot directly act on the external die 1, the transverse beams 5 at the two ends are commonly used for tensioning two ends of a reinforcement cage together, the reaction force of the prestress and the prestress can be shared together, and the extrusion force applied to the external die 1 by the transverse beams 5 can be shared by the longitudinal beams 6, so that the extrusion force applied to the external die 1 by the transverse beams 5 can be smaller, the structural strength of the external die 1 can be properly reduced under the premise of meeting the requirement of prestress tensioning, and the cost can also be reduced. In the present embodiment, the transverse beams 5 and the longitudinal beams 6 may be reinforced concrete members or steel structural members.

Further, as shown in fig. 1, the die set of the present embodiment further includes a connecting plate 8, the connecting plate 8 is fastened to the end of the transverse beam 5 by a plurality of fasteners spaced apart from each other, and/or the connecting plate 8 is fastened to the end of the longitudinal beam 6 by a plurality of fasteners spaced apart from each other; alternatively, the ends of the transverse beams 5 are fixed with the ends of the longitudinal beams 6 in a clamping or joggling manner.

In the structure, the two side surfaces of the transverse beam 5 are provided with the connecting hole arrays, the outer side surfaces of the two end parts of the longitudinal beam 6 are also provided with the connecting hole arrays, the connecting hole arrays of the transverse beam 5 and the connecting hole arrays of the longitudinal beam 6 are covered with the same connecting plate 8, and the connecting plate 8 is connected with the connecting hole arrays of the transverse beam 5 and the connecting hole arrays of the longitudinal beam 6 through bolts, so that the transverse beam 5 and the longitudinal beam 6 are detachably connected. Or the end part of the transverse beam 5 and the end part of the longitudinal beam 6 can be detachably connected through the tenon-and-mortise structures which are mutually clamped.

Furthermore, since the lengths of the transverse beam 5 and the longitudinal beam 6 are often very long in practical production, and therefore the straightness error of the transverse beam 5 and the longitudinal beam 6 is relatively large, in order to avoid this, in this embodiment, the longitudinal beam 6 includes more than two sections of spliced longitudinal beams, and two adjacent sections of spliced longitudinal beams are fixed by joggling or clamping or are fixed by fasteners or are connected by bolts; and/or the transverse beam 5 comprises more than two sections of splicing type cross beams, and the adjacent two sections of splicing type cross beams are fixed in a joggle joint mode or a clamping mode or are connected and fixed through fasteners or are connected through bolts.

In addition, in order to meet the requirement that the transverse beam 5 can stretch the reinforcement cage, a stretching screw used in stretching can penetrate through the transverse beam 5 and be connected with a stretching plate of the outer die 1, and when the number of the outer dies 1 is adjusted, the central axis of the outer die 1 and the central axis of the stretching screw may change, that is, the central axis of the stretching screw and the central axis of the outer die 1 are not coincident, and the position of the stretching screw needs to be adjusted, therefore, a plurality of strip-shaped stretching adjusting holes 51 which are in one-to-one correspondence with the outer dies 1 are arranged in the transverse beam 5 at intervals, and the stretching adjusting holes 51 are communicated with the outer dies 1, so that the position of the stretching screw can be adjusted in the.

Because each outer mold 1 is positioned in the mold frame 7, and the transverse beams 5 and the longitudinal beams 6 are wound around the outer mold, the top of the longitudinal beam 6 is longitudinally provided with a longitudinal material distribution rail 61 for the longitudinal travelling of the material distribution trolley for facilitating material distribution; and/or a transverse distribution rail (not shown in the figure) for the transverse traveling of the distribution trolley is transversely arranged at the top of the transverse beam 5. Meanwhile, as the material distribution openings 32 are formed in at least part of the top molds 3, the material distribution trolley can directly distribute the material to the outer mold 1 in the advancing process. After the distribution is finished, the concrete material in the die set can be leveled by adopting modes of vibration, scraping, leveling and the like.

As shown in fig. 3, further, in order to reduce the maintenance time of the precast pile with variable cross-section, improve the maintenance effect, and increase the structural strength of the precast pile with variable cross-section during the production of the precast pile with variable cross-section, the outer mold 1 is provided with a steam channel 13, and of course, the inner wall and/or the bottom of the mold frame 7 is provided with a steam channel.

Of course, since the mold frame 7 is open at the top, in order to ensure the steam curing effect, a heat insulation covering structure 71 for covering the open top is disposed above the mold frame 7. In this embodiment, the heat-insulating covering structure 71 can be a rolling shutter type rolling cover, the upper part of the mold frame 7 is closed in a rolling and pulling mode, the covering structure can also be a plate-type sealing cover, and a steam channel can be arranged in the plate-type sealing cover. Furthermore, in order to reduce the leakage of steam and improve the steam curing effect, the edges of the transverse beam 5 and the longitudinal beam 6 close to the mold frame 7 are provided with a water tank 9 which is enclosed to be matched with the heat preservation covering structure 71, and when the heat preservation covering structure 71 covers the mold frame 7, the heat preservation covering structure 71 covers the water tank 9 at the same time, so that the steam leakage is reduced.

Furthermore, a coarse mold cavity section 11 is formed at one longitudinal end of the bottom mold 10, and the longitudinal length of the coarse mold cavity section 11 located at the longitudinal end of the bottom mold 10 is greater than the longitudinal length of the coarse mold cavity section 11 between any two fine mold cavity sections 12; the forming cavities of the top die 3 at the two longitudinal ends of the bottom die 10 are matched with the longitudinal length of the coarse die cavity section 11 at the longitudinal end of the bottom die 10.

In the structure, the end part of the produced variable cross-section precast pile is a thick pile section, and the longitudinal length of the thick pile section at the end part is greater than that of the thick pile section between the thin pile sections, so that the maximum bearing capacity which can be borne by the end part of the variable cross-section precast pile is increased in the pile sinking process, and the end part is prevented from bursting open.

The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is defined by the scope defined by the claims, and a plurality of modifications and decorations made by those skilled in the art without departing from the spirit and scope of the present invention should also be regarded as the protection scope of the present invention.

Claims (16)

1. A die set, comprising:

more than two bottom moulds (10) which are arranged in sequence along the transverse direction, wherein the upper part of each bottom mould (10) is open, and a coarse mould cavity section (11) and a fine mould cavity section (12) which are arranged in sequence and alternately are formed in the longitudinal direction, and the fine mould cavity section (12) is used for forming a fine pile section of the variable cross-section precast pile; and

the top moulds (3) are longitudinally arranged at intervals, and each top mould (3) can be movably and transversely erected at the tops of more than two bottom moulds (10) and is used for forming a thick pile section of the variable-section precast pile together with the thick mould cavity section (11);

when the top die (3) transversely covers the top of the bottom die (10), the forming cavity of the top die (3) is communicated with the coarse die cavity section (11).

2. A die set according to claim 1, characterized in that the bottom die comprises an outer die (1) and a number of inner mould dies (2), each inner mould die (2) being arranged in the outer die (1) at longitudinally spaced intervals to form the fine die cavity section (12);

the top moulds (3) are connected to each other in the transverse and/or longitudinal direction as a unitary structure.

3. The die set according to claim 2, wherein two top dies (3) adjacent in the transverse direction and/or the longitudinal direction are connected through a connecting rod (4), a connecting hole is formed in the connecting rod (4), a positioning hole corresponding to the connecting hole is formed in the top of the outer die (1), and the connecting rod (4) is connected and fixed to the top of the outer die (1) through a fastener.

4. A mould set according to claim 2, characterised in that the forming cavity of the top mould (3) protrudes beyond the coarse mould cavity section (11) and that the inner moulding moulds (2) and the top moulds (3) are arranged alternately in the longitudinal direction of the outer mould (1).

5. A die set according to claim 4, characterized in that the forming cavity of the top die (3) is formed with a drawing surface (21) and/or the forming cavity of the inner moulding (2) is formed with a drawing surface (21).

6. A die set according to claim 2, wherein one transverse end of the top die (3) is hinged with the top of the outer die (1) at the transverse outermost side, and the other transverse end of the top die (3) is detachably connected and fixed with the top of the outer die (1) at the other transverse side.

7. A mould set according to claim 6, characterized in that at least some of the top moulds (3) are provided with concrete distribution openings (32).

8. A die set according to claim 1, further comprising a die frame (7) which is formed by at least one pair of transverse beams (5) and at least one pair of longitudinal beams (6) and is detachably connected with each other to form an upper opening, wherein the outer dies (1) are sequentially and transversely arranged in the die frame (7), and the longitudinal length of each outer die (1) is less than or equal to the longitudinal inner length of the die frame (7).

9. A die set according to claim 8, characterized in that the inner wall and/or the bottom of the die frame (7) is provided with steam channels.

10. A die set according to claim 8, characterized in that the outer die (1) is provided with a steam channel (13).

11. A die set according to claim 8, characterized in that it further comprises a connecting plate (8), the connecting plate (8) being firmly connected to the ends of the transverse beams (5) by a plurality of spaced apart fasteners and/or the connecting plate (8) being firmly connected to the ends of the longitudinal beams (6) by a plurality of spaced apart fasteners;

or the end part of the transverse beam (5) is clamped and fixed or joggled and fixed with the end part of the longitudinal beam (6).

12. The die set according to claim 8, characterized in that a plurality of elongated tensioning adjusting holes (51) corresponding to the outer dies (1) one by one are formed in the transverse beam (5) at intervals along the transverse direction, and the tensioning adjusting holes (51) are communicated with the outer dies (1).

13. The die set according to claim 8, characterized in that a longitudinal material distribution rail (61) for the longitudinal running of the material distribution trolley is installed on the top of the longitudinal beam (6) along the longitudinal direction;

and/or a transverse material distribution rail for the material distribution trolley to transversely advance is transversely arranged at the top of the transverse beam (5).

14. A mould set according to claim 8, characterized in that a heat-insulating covering structure (71) is arranged above the mould frame (7) and covers the upper opening.

15. A mould set according to claim 14, characterized in that the edges of the transverse beams (5) and the longitudinal beams (6) near the mould frame (7) are provided with water channels (9) enclosing a matching insulation cover structure (71), and that the insulation cover structure (71) covers the water channels (9).

16. The die set according to any one of claims 1 to 4, characterized in that the bottom die (10) is formed with a coarse die cavity section (11) at one longitudinal end, and the longitudinal length of the coarse die cavity section (11) at the longitudinal end of the bottom die (10) is greater than the longitudinal length of the coarse die cavity section (11) between any two fine die cavity sections (12);

the forming cavities of the top die (3) positioned at the longitudinal end parts of the bottom die (10) are matched with the longitudinal length of the coarse die cavity section (11) positioned at the longitudinal end part of the bottom die (10).

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