CN212352391U - Prefabricated component forming equipment - Google Patents

Abstract

The utility model provides a prefabricated part forming device, which comprises an outer frame body formed by connecting at least one pair of transverse beams and at least one pair of longitudinal beams, a mould assembly which can be placed in a content cavity of the outer frame body, and a split type heat-insulating covering structure for sealing the top opening of the content cavity; wherein, split type heat preservation covers the structure and contains more than two airtight slice panel constitutions of dismantling the connection each other, and split type heat preservation covers the structure and is sealing can shorten longitudinal length before the top of content cavity is uncovered. The utility model discloses a split type heat preservation covers the structure and guarantees that prefabricated component is airtight when evaporating to foster, and the leakproofness is good to difficult and other equipment collisions, the security is high.

Description

Prefabricated component forming equipment

Technical Field

The utility model relates to a prefabricated component makes the field, especially relates to a prefabricated component former.

Background

In the production process of the concrete prefabricated part, in order to improve the bearing capacity of the prefabricated part, reduce the setting time of concrete, improve the strength of the concrete and accelerate the production efficiency, the concrete in the mold is generally required to be steamed.

The steam curing process for steam curing concrete piles is generally characterized in that a steam curing pool is constructed, steam outlets are formed in opposite corners of the steam curing pool, all moulds to be steam cured can be stacked in the steam curing pool during steam curing operation, and then the moulds placed in the steam curing pool are steam cured through the steam outlets formed in the steam curing pool. At present, the steam-curing heat-preservation method of the square pile mould adopts a whole piece of canvas to cover the mould to serve as a heat-preservation cover, or adopts a whole piece of rigid cover plate to cover the upper part of a steam-curing pool.

The canvas has poor sealing effect and heat preservation effect, so that steam leaks in a large amount in the steam curing process, and the steam is cooled quickly, so that steam is required to be supplied continuously, and resource waste is caused. In addition, the canvas is easy to contact with the surface of an unformed pile, so the canvas can be adhered to the pile after the steam curing is finished, the appearance of the pile can be damaged, the canvas can be damaged, and the service life of the canvas is shortened. In addition, the steam curing pool also needs to hoist the mould in and out, so that the efficiency is low and safety accidents are easy to happen.

And adopt a monoblock rigid cover board to cover above evaporating fostering pond, when sealing off evaporating fostering pond, though evaporate fostering effect and improve, nevertheless because evaporate fostering pond often length very long, bulky, consequently the rigid cover board collides with other devices in the workshop very easily when hoist and mount to lead to equipment impaired, have great potential safety hazard.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a prefabricated component former that the leakproofness is good, the security is high is evaporated in situ.

For solving the technical problem, the utility model discloses a following technical scheme:

a prefabricated part forming device comprises an outer frame body formed by connecting at least one pair of transverse beams and at least one pair of longitudinal beams, a mold combination body capable of being placed in an inner cavity of the outer frame body, and a split type heat-insulation covering structure for sealing an opening at the top of the inner cavity; wherein, split type heat preservation covers the structure and contains more than two airtight slice panel constitutions of dismantling the connection each other, and split type heat preservation covers the structure and is sealing can shorten longitudinal length before the top of content cavity is uncovered.

Preferably, the split type heat-insulation covering structure comprises a first covering plate and a second covering plate which are longitudinally distributed, and the end part of the first covering plate is hinged with the end part of the second covering plate;

before installation, the second cover plate naturally deflects under the action of gravity to form an included angle with the first cover plate so as to shorten the longitudinal length of the split type heat-insulation cover structure;

after the split type heat-preservation covering structure is installed, the second covering plate deflects reversely and is paved on the top of the content cavity together with the first covering plate so as to increase the longitudinal length of the split type heat-preservation covering structure;

preferably, the first cover sheet and the second cover sheet are provided with a heat reflective layer towards the inner cavity;

preferably, at least two hanging rings are arranged on the first cover plate.

Preferably, the split type heat-insulation covering structure comprises a first covering plate and a second covering plate which are longitudinally distributed, sliding grooves are formed in the outer side walls of the two transverse sides of the first covering plate, and a plurality of pulleys which are arranged at intervals and matched with the sliding grooves are formed in the inner side walls of the two transverse sides of the second covering plate;

before installation, the pulley is positioned in the sliding groove, so that the second cover plate covers the upper part or the lower part of the first cover plate, and the longitudinal length of the split type heat-preservation cover structure is shortened;

after the split type heat-insulation covering structure is installed, at least part of the pulleys slide out of the sliding grooves, so that the second covering plate extends out of the first covering plate, and the longitudinal length of the split type heat-insulation covering structure is increased;

preferably, the first cover sheet and the second cover sheet are provided with a heat reflective layer towards the inner cavity;

preferably, at least one hanging ring is arranged on each of the first cover plate and the second cover plate.

Preferably, the sliding groove is provided with a guiding inclined surface communicated with the sliding groove and a stopping surface capable of stopping the pulley at the end part close to the second covering plate, and the guiding inclined surface and the stopping surface (define a stopping groove for preventing the last pulley from sliding out of the sliding groove).

Preferably, the first cover plate and the second cover plate are connected through a buckle;

preferably, the first cover plate and/or the second cover plate is provided with a sealing body at a joint with the outer frame.

Preferably, the mold assembly comprises: more than two bottom dies which are arranged in sequence along the transverse direction, wherein the upper part of each bottom die is open and is longitudinally provided with a coarse die cavity section and a fine die cavity section which are arranged in sequence and alternately; the top dies are movably and transversely erected at the top of the bottom die and used for forming a thick pile section of the variable-section precast pile together with the corresponding thick die cavity section;

and when the top die is transversely erected at 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 each inner modeling die is longitudinally spaced in the outer die to form the fine die cavity section;

the forming cavity of the top die protrudes out of the coarse die cavity section, and the inner forming dies and the top die are alternately arranged in the longitudinal direction of the outer die;

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

Preferably, a plurality of longitudinally-laid steam pipelines are arranged on the outer side wall of the outer die at intervals along the height direction.

Preferably, the longitudinal two ends of the die assembly are respectively abutted to a transverse beam, the transverse width of the die assembly is smaller than or equal to that of the inner cavity, and the top of one transverse side or the tops of two transverse sides of the die assembly are connected with the top of the longitudinal beam through inclined plates.

Preferably, at least one transverse beam is transversely provided with a plurality of strip-shaped tensioning holes which are in one-to-one correspondence with the bottom die, and the tensioning holes are communicated with the die cavity of the bottom die.

Compared with the prior art, the beneficial effects of the utility model reside in that:

(1) the outer frame body formed by connecting and enclosing at least one pair of transverse beams and at least one pair of longitudinal beams and the split type heat-preservation covering structure form the steam-curing pool, and the die assembly can be directly placed in the outer frame body without being hoisted in and out.

(2) With split type heat preservation cover structure can dismantle the connection each other, forms a monoblock heat preservation cover structure, seals the uncovered of content cavity again, can avoid monoblock heat preservation cover structure to collide with other equipment when hoist and mount to can divide hoist and mount many times, avoid once lifting by crane overweight heat preservation cover structure, lead to the load of driving a vehicle too high, thereby lead to the security to reduce.

(3) Through the vertical length of adjustment split type heat preservation covering structure, make split type heat preservation covering structure can shorten vertical length before lifting by crane to avoid colliding with other equipment, when the installation, can recover vertical length.

(4) Split type heat preservation covers the structure and comprises airtight slice panel, and at the steam curing in-process, split type heat preservation covers the structure and covers in outer frame body top, and steam is difficult to leak, and it is effectual to keep warm, energy saving consumption to slice panel is different from the canvas soft, and split type heat preservation covers the structure and can not warp under the effect of gravity, so split type heat preservation covers the structure and can not contact with the concrete that has not condensed yet, thereby can not destroy the stake type.

Drawings

Fig. 1 is a schematic structural view of the prefabricated part forming equipment of the present invention;

fig. 2 is a schematic structural view of another view angle of the prefabricated part forming equipment of the present invention, in which a split type heat preservation covering structure is omitted;

fig. 3 is a schematic structural view of a split type heat preservation covering structure in embodiment 1 of the present invention;

fig. 4 is a schematic structural view of a split type heat preservation covering structure in embodiment 2 of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 taken at the letter A;

FIG. 6 is a schematic cross-sectional view of the apparatus for forming prefabricated parts according to the present invention;

fig. 7 is a schematic structural view of the molding die of the present invention;

fig. 8 is a schematic structural view of the top mold 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.

Example 1

As shown in fig. 1 and fig. 6, the present embodiment provides a prefabricated part forming apparatus, which comprises an outer frame body formed by at least a pair of transverse beams 1 and at least a pair of longitudinal beams 2 detachably connected to each other, a mold assembly 4 capable of being placed in an inner cavity 3 of the outer frame body, and a plurality of split type heat-insulating covering structures 31 detachably connected to each other to seal an opening at the top of the inner cavity 3; wherein, split type heat preservation covers structure 31 and contains more than two airtight slice panel constitutions of dismantling the connection each other, and split type heat preservation covers structure 31 and is being sealed longitudinal length can shorten before the top of content cavity 3 is uncovered

In the structure, the die assembly 4 can be placed on the hard bearing surface in advance, the transverse beam 1 and the longitudinal beam 2 surround the die assembly 4 to form a detachable outer frame body, so that the steam curing pool is formed, the die assembly 4 does not need to be hung in and out of a content cavity of the outer frame body in the actual production process, the production efficiency is improved, and the safety is improved. Besides, the number of the transverse beams 1 and/or the longitudinal beams 2 can be increased or decreased to adjust the size of the outer frame body according to the length, the width and the number of the die assembly 4. It is of course also possible to adjust the size of the outer frame body by exchanging the transverse beams 1 and the longitudinal beams 2 of different lengths to reduce the restrictions on the production site during the production process.

In addition, because the longitudinal length of the mould assembly 4 is often very long, can dismantle the connection through split type heat preservation cover structure 31, form a monoblock heat preservation cover structure, the uncovered of the content cavity top in order to seal content cavity 3 of outer frame body covers again, can avoid monoblock heat preservation cover structure to collide with other equipment when hoist and mount, and can divide and hoist many times, avoid once lifting by crane overweight heat preservation cover structure, lead to the load of driving a vehicle too high, thereby lead to the security to reduce. In addition, through the longitudinal length of adjustment split type heat preservation cover structure 31, make split type heat preservation cover structure 31 can shorten longitudinal length before the installation, avoid split type heat preservation cover structure's longitudinal length overlength and other equipment collisions, avoid taking place the incident, when the installation, split type heat preservation cover structure 31's longitudinal length can resume to ensure to seal the uncovered of content cavity 3. Split type heat preservation covers structure 31 and comprises airtight slice panel, and at the steam curing in-process, split type heat preservation covers structure 31 and covers in outer frame body top, and steam is difficult to leak, and it is effectual to keep warm, energy saving consumption to slice panel is different from the canvas softness, and split type heat preservation covers structure 31 and can not warp under the effect of gravity, so split type heat preservation covers structure 31 can not contact with the concrete that has not condensed yet, thereby can not destroy the stake type. Preferably, the split heat-insulating covering structure 31 may be made of a steel plate.

Further, as shown in fig. 3, the split type heat-insulating covering structure 31 includes a first covering plate 311 and a second covering plate 312 which are longitudinally distributed, and an end of the first covering plate 311 is hinged to an end of the second covering plate 312; before installation, the second cover plate 312 naturally deflects under the action of gravity to form an included angle with the first cover plate 311, so as to shorten the longitudinal length of the split type heat-insulating cover structure 31; after installation, the second cover 312 is reversed and laid flat on top of the content cavity 3 together with the first cover 311 to increase the longitudinal length of the split thermal cover structure 31.

In the above-mentioned structure, the driving hangs first cover plate 311 after, second cover plate 312 deflects downwards naturally under the effect of gravity, thereby shorten split type heat preservation cover structure 31's longitudinal length, when the installation, the free end of second cover plate 312 earlier with the top contact of outer frame body, the driving removes in the horizontal direction in the time of the first cover plate 311 of below afterwards, make second cover plate 312 reverse deflection, thereby make second cover plate 312 and first cover plate 311 tile at content cavity 3 top, first cover plate 311 and second cover plate 312 are in the coplanar this moment, split type heat preservation cover structure 31's longitudinal length can increase. Of course, in practice, a crane may be used to lift second cover 312.

In this embodiment, in order to keep the traveling crane stable when the first cover 311 or the second cover 312 is lifted, and reduce the swing range of the first cover 311 or the second cover 312 in the air, at least two hanging rings are provided on the first cover 311 and/or the second cover 312.

In addition, in order to provide better heat insulation effect for the split type heat insulation covering structure 31, a heat reflective layer, preferably an aluminum foil layer, is disposed on the first covering sheet 311 and the second covering sheet 312 toward the inner cavity 3.

Furthermore, the first cover plate 311 and the second cover plate 312 are connected by a snap, and a sealing body not shown in the drawing is arranged at the joint of the first cover plate 311 and/or the second cover plate 312 on the outer frame body, the sealing body is preferably a flexible sealing member, the flexible sealing member can deform under the extrusion stress state to adapt to the gap between the outer frame body and the split type heat preservation cover structure 31, and the sealing performance of the split type heat preservation cover structure 31 is further improved.

In addition, in order to further reduce steam leakage, improve and evaporate the foster effect, the edge that is close to content cavity 3 on horizontal roof beam 1 and the vertical roof beam 2 is equipped with encloses into and covers structure 31 assorted basin 6 with split type heat preservation, covers when structure 31 shroud is in outer framework at split type heat preservation, and split type heat preservation covers structure 31 and covers basin 6 simultaneously, reduces steam leakage.

Further, as shown in fig. 2 and 8, the mold assembly 4 includes: more than two bottom dies 42 which are arranged in sequence along the transverse direction, wherein the upper part of each bottom die 42 is open and is longitudinally provided with a coarse die cavity section 43 and a fine die cavity section 44 which are arranged in sequence and alternately; the top moulds 41 are arranged at intervals along the longitudinal direction, and each top mould 41 can be movably and transversely erected on the top of the bottom mould 42 and is used for forming a thick pile section of the variable-section precast pile together with the corresponding thick mould cavity section 43; when the top mold 41 is transversely erected on the top of the bottom mold 42, the forming cavity of the top mold 41 is communicated with the coarse mold cavity section 43.

In the above structure, two or more bottom moulds 42 may be used for producing a plurality of precast piles with variable cross-sections in one production process of the mould assembly 4, so as to improve the production efficiency. The inner wall of the bottom mold 42 may be formed with protrusions to form the fine cavity sections 44, 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 of the inner wall of the bottom mold 42 where no protrusions are formed, the coarse cavity sections 43 are inevitably formed, so that the side surfaces and the bottom surface of the fabricated pile are formed with the coarse pile sections. Since the upper surface of the precast pile to be produced has the same structure as other surfaces, the protrusions are formed on the upper surface of the precast pile, and thus the upper surface of the precast pile is formed by communicating the forming cavity of the top mold 41 with the coarse mold cavity section 43.

Further, as shown in fig. 7, the bottom mold 42 includes an outer mold 421 and a plurality of inner molds 422, each inner mold 422 being longitudinally spaced within the outer mold 421 to form the thin mold cavity segment 44; the molding cavity of the top mold 41 protrudes from the rough mold cavity section 43, and the inner molding molds 422 and the top molds 41 are alternately arranged in the longitudinal direction of the outer mold 421.

In the above structure, the inner forming die 422 and the outer die 421 may be made into a split structure by splicing or inserting, and the inner forming die 422 can move along the inner wall of the outer die 421 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. Of course, the outer mold 421 may be formed by splicing several short mold segments in sequence in the longitudinal direction. The length of the outer die 421 can be reasonably adjusted according to production requirements by the structural design, and the inner molding die 422 and the outer die 421 can be connected and fixed in an embedding and fastening piece locking mode, so that the universality of the die assembly is improved. In addition, 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 with the above structure, when each top mold 41 covers the top of the outer mold 421 laterally, the forming cavity of the top mold 41 is communicated with the coarse mold cavity section 43 and protrudes out of the coarse mold cavity section 43, and the forming cavity of the top mold 41 is matched with the surface of the coarse mold cavity section 43, so that the top mold 41 and the outer mold 421 form the coarse pile section together. In this embodiment, when the top die 41 is covered on the top of the outer die 421, the protrusion thickness of the inner mold 422 relative to the coarse cavity section 43 is equal to or approximately equal to the protrusion height of the forming cavity of the top die 41, so as to form the precast pile with variable cross section with uniform concave-convex height on each surface, thereby forming the thin pile section and the thick pile section with scaled cross-sectional areas based on the central axis of the produced precast pile. Preferably, the top forms 41 in the same transverse direction in this embodiment are connected into an integral structure, and since the top form 41 needs to be removed from the outer form 421 when the precast pile with variable cross section is demolded, the top form 41 can be removed at a time, thereby improving the production efficiency. In order to facilitate the demoulding of the precast pile with variable cross section, the forming cavity of the top die 41 is formed with a first drawing surface 411, and/or the forming cavity of the inner moulding die 422 is formed with a second drawing surface 4221.

Furthermore, as shown in fig. 2, a plurality of longitudinally-laid steam pipes 45 are arranged on the outer side wall of the outer mold 421 at intervals in the height direction, and the lengths of the steam pipes 45 may be different. In the structure, the steam pipelines 45 with different lengths are arranged, so that steam can be fully provided in the length direction of the precast pile for steam curing when steam is sprayed, and the steam curing effect is improved.

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 this embodiment, in order to reduce the cost of the mold assembly 4, the longitudinal two ends of the mold assembly 4 are respectively abutted to one transverse beam 1, the longitudinal beams 2 are respectively disposed on the two transverse sides of the bottom mold 42, in the process of pre-stress tensioning, the pre-stress for tensioning directly acts on the transverse beams 1, the transverse beams 1 are used to replace the end plates at the end portions of the existing mold, the pre-stress cannot directly act on the bottom mold 42, and the transverse beams 1 at the two ends are commonly used for tensioning the two ends of the reinforcement cage together, so that the reaction force of the pre-stress and the pre-stress can be shared together, and the extrusion force received by the bottom mold 42 through the transverse beams 1 is shared by the longitudinal beams 2, so that the extrusion force of the transverse beams 1 to the bottom mold 42 can be smaller, and under the precondition that the pre-stress tensioning is satisfied, the structural strength of the bottom mold 42. In the present embodiment, the transverse beams 1 and the longitudinal beams 2 may be reinforced concrete members or steel structural members.

Besides, in the present embodiment, the transverse width of the mold assembly 4 is smaller than or equal to the transverse width of the inner cavity 3, and the top of one or both transverse sides of the mold assembly 4 is connected to the top of the longitudinal beam 2 by the inclined plate 5. In the above configuration, a part of the space is reserved between the mold assembly 4 and the outer frame, and the position of the mold assembly 4 can be adjusted within a certain width dimension range. Due to the structure, when concrete materials are distributed in the die assembly 4, part of the concrete drops, so that the waste of the concrete can be avoided through the inclined plate 5, and the cost is saved.

Preferably, as shown in fig. 1, the mold assembly 4 of this embodiment further includes a connecting plate 7, the connecting plate 7 is fastened to the end of the transverse beam 1 by a plurality of fasteners spaced apart from each other, and/or the connecting plate 7 is fastened to the end of the longitudinal beam 2 by a plurality of fasteners spaced apart from each other; or the end part of the transverse beam 1 is clamped and fixed or joggled and fixed with the end part of the longitudinal beam 2.

In addition, in order to satisfy that the transverse beam 1 can stretch the steel reinforcement cage, the tensioning screw used during tensioning can pass the transverse beam 1 and is connected with the tensioning plate of the bottom die 42, and because when adjusting the number of the bottom dies 42, the central axis of the bottom die 42 and the central axis of the tensioning screw may change, that is, the central axis of the tensioning screw does not coincide with the central axis of the bottom die 42, the position of the tensioning screw needs to be adjusted, therefore, at least one transverse beam 1 is transversely provided with a plurality of tensioning holes 11 which are in a long strip shape and correspond to the bottom die 42 one by one, and the tensioning holes 11 are communicated with the die cavity of the bottom die 42, so that the position of the tensioning screw can be adjusted in the tensioning.

Example 2

The same portions as those in embodiment 1 are given the same reference numerals, and the same description is omitted.

As shown in fig. 4 and 5, the split type heat-insulating covering structure 31 includes a first covering plate 311 and a second covering plate 312 which are longitudinally distributed, sliding grooves 313 are provided on outer side walls of both lateral sides of the first covering plate 311, and a plurality of pulleys 314 which are arranged at intervals and matched with the sliding grooves 313 are provided on inner side walls of both lateral sides of the second covering plate 312; before installation, the pulley 314 is located in the sliding groove 313, so that the second cover plate 312 covers above or below the first cover plate 311 to shorten the longitudinal length of the split type heat-insulation cover structure 31; after installation, at least a portion of the pulley 314 slides out of the sliding slot 313, such that the second covering plate 312 extends out of the first covering plate 311, thereby increasing the longitudinal length of the split thermal covering structure 31.

In the above structure, in the initial state, the pulleys 314 of the second cover 312 are all located in the sliding groove 313, the second cover 312 is covered above or below the first cover 311, after the first cover 311 is lifted by the crane, the second cover 312 is lifted together with the first cover 311, and when the second cover 312 is installed, the second cover 312 is pulled out.

Further, the sliding groove 313 is provided with a guiding inclined surface 3151 communicating with the sliding groove 313 and a stopping surface 3152 capable of blocking the pulley 314 at an end portion close to the second covering plate 312, and the guiding inclined surface 3151 and the stopping surface 3152 enclose a stopping groove 315 for preventing the last pulley from sliding out of the sliding groove 313.

In actual operation, when the second cover plate 312 is pulled out, the pulley 314 slides out of the sliding groove 313 one by one, and since the second cover plate 312 may be separated from the first cover plate 311 when pulled out, in order to prevent this, with the above structure, when the last pulley 314 of the second cover plate 312 is to be pulled out, the second cover plate 312 moves downward by a small distance under the combined action of gravity and the guiding inclined surface 3151, so that the pulley slides into the stopping groove 315 and forms a clamping connection with the stopping surface 3152, thereby forming a clamping connection between the first cover plate 311 and the second cover plate 312, and preventing the second cover plate 312 from being separated from the first cover plate 311.

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. The prefabricated part forming equipment is characterized by comprising an outer frame body formed by mutually connecting at least one pair of transverse beams (1) and at least one pair of longitudinal beams (2), a mold combination body (4) capable of being placed in an inner cavity (3) of the outer frame body, and a split type heat-insulating covering structure (31) for sealing the top opening of the inner cavity (3);

wherein, split type heat preservation covers structure (31) and contains more than two airtight slice panel of dismantling the connection each other, and split type heat preservation covers structure (31) and is being sealed can shorten longitudinal length before the top of content cavity (3) is uncovered.

2. The prefabricated part forming equipment according to the claim 1, wherein the split type heat-insulation covering structure (31) comprises a first covering plate (311) and a second covering plate (312) which are longitudinally distributed, and the end part of the first covering plate (311) is hinged with the end part of the second covering plate (312);

before installation, the second cover plate (312) naturally deflects under the action of gravity to form an included angle with the first cover plate (311) so as to shorten the longitudinal length of the split type heat-insulation cover structure (31);

after installation, the second cover plate (312) deflects reversely and is laid on the top of the content cavity (3) together with the first cover plate (311) to increase the longitudinal length of the split heat-insulating cover structure (31).

3. The pre-form forming apparatus according to claim 2, characterised in that the first cover plate (311) and the second cover plate (312) are provided with a heat reflective layer towards the inner cavity (3).

4. The prefabricated part forming device according to claim 2, wherein at least two hanging rings are provided on the first covering plate (311) and/or the second covering plate (312).

5. The prefabricated part forming equipment according to claim 1, wherein the split type heat-insulation covering structure (31) comprises a first covering plate (311) and a second covering plate (312) which are longitudinally distributed, sliding grooves (313) are formed in the outer side walls of the two transverse sides of the first covering plate (311), and a plurality of pulleys (314) which are arranged at intervals and matched with the sliding grooves (313) are formed in the inner side walls of the two transverse sides of the second covering plate (312);

before installation, the pulley (314) is positioned in the sliding groove (313), so that the second cover plate (312) covers the first cover plate (311) or the second cover plate covers the first cover plate to shorten the longitudinal length of the split type heat-insulation cover structure (31);

after installation, at least part of the pulleys (314) slide out of the sliding grooves (313), so that the second cover plate (312) extends out of the first cover plate (311) to increase the longitudinal length of the split type heat-insulation cover structure (31).

6. The prefabricated element forming device according to claim 5, wherein the first cover plate (311) and the second cover plate (312) are provided with a heat reflective layer towards the inner cavity (3).

7. The prefabricated part forming device according to claim 5, wherein at least one hanging ring is provided on each of the first covering plate (311) and/or the second covering plate (312).

8. The prefabricated part forming equipment according to claim 5, wherein the sliding groove (313) is provided with a guide inclined surface (3151) communicated with the sliding groove (313) and a stop surface (3152) capable of stopping the pulley (314) at an end close to the second covering plate (312), and the guide inclined surface (3151) and the stop surface (3152) enclose a stop groove (315) preventing the last pulley from sliding out of the sliding groove (313).

9. The prefabricated part molding apparatus of any one of claims 2 or 5, wherein the first cover plate (311) and the second cover plate (312) are connected by a snap fit.

10. The prefabricated part forming equipment according to claim 9, wherein the first cover plate (311) and/or the second cover plate (312) is provided with a sealing body at a junction with an outer frame body.

11. The prefabricated member forming apparatus according to claim 1, wherein the mold assembly (4) includes: more than two bottom moulds (42) which are arranged in sequence along the transverse direction, wherein the upper part of each bottom mould (42) is open and is longitudinally provided with a coarse mould cavity section (43) and a fine mould cavity section (44) which are arranged in sequence and alternately; the top moulds (41) are arranged at intervals along the longitudinal direction, and each top mould (41) can be movably and transversely erected on the top of the bottom mould (42) and is used for forming a thick pile section of the variable-section precast pile together with the corresponding thick mould cavity section (43);

when the top die (41) is transversely erected on the top of the bottom die (42), the forming cavity of the top die (41) is communicated with the coarse die cavity section (43).

12. The prefabricated member forming apparatus of claim 11 wherein the bottom mold (42) includes an outer mold (421) and a plurality of inner molding dies (422), each of the inner molding dies (422) being longitudinally spaced within the outer mold (421) to form the fine cavity section (44);

the molding cavity of the top die (41) protrudes out of the coarse die cavity section (43), and the inner molding dies (422) and the top dies (41) are alternately arranged in the longitudinal direction of the outer die (421).

13. The prefabricated member forming device according to claim 12, wherein the forming cavity of the top mold (41) is formed with a first drawing surface (411), and/or the forming cavity of the inner molding mold (422) is formed with a second drawing surface (4221).

14. The prefabricated part forming equipment of claim 12, wherein a plurality of longitudinally laid steam pipes (45) are arranged on the outer side wall of the outer die (421) at intervals along the height direction.

15. The precast member forming apparatus according to claim 11, wherein both longitudinal ends of the mold assembly (4) abut against a transverse beam (1), respectively, the transverse width of the mold assembly (4) is less than or equal to the transverse width of the containing cavity (3), and the top of one or both transverse sides of the mold assembly (4) is engaged with the top of the longitudinal beam (2) by the inclined plate (5).

16. The prefabricated member forming apparatus according to claim 15, wherein at least one of the transverse beams (1) is transversely provided with a plurality of elongated tension holes (11) corresponding to the bottom mold (42) one by one, and the tension holes (11) are communicated with the mold cavity of the bottom mold (42).

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