CN211541678U - Variable cross-section precast pile mould - Google Patents

Abstract

The utility model provides a variable cross-section precast pile mould, which comprises an outer mould with a mould cavity and a plurality of moulding moulds arranged in the mould cavity at intervals along the length direction of the mould cavity; the modeling mold is detachably arranged on the outer mold through the lock catch, an elastic mechanism is arranged between the modeling mold and the outer mold, when the lock catch is loosened, the elastic mechanism is released, and the modeling mold can freely slide along the inner wall of the outer mold in the mold cavity; when the lock catch is locked, the elastic mechanism is folded, and the molding die is locked in the die cavity. The utility model discloses passing through the hasp with the molding die and dismantling the connection on the external mold, when hasp locking, the molding die can be fixed, loosens the back when the hasp, and the molding die can be followed the external mold inner wall and removed, adjusts the position of molding die, consequently can produce the variable cross section precast pile of different sunk surface positions in a variable cross section precast pile mould, has improved the commonality of mould in order to practice thrift mould cost expense.

Description

Variable cross-section precast pile mould

Technical Field

The utility model relates to a precast pile makes the field, especially relates to a variable cross section precast pile mould.

Background

The solid concrete precast pile is a pile foundation member commonly used in the existing buildings, the section of the solid concrete precast pile is generally square, the traditional precast pile is mostly a straight pile, the cross section of the traditional precast pile is unchanged along the length of the pile, the processing is convenient, and the manufacturing quality is easy to guarantee. However, with the development of the construction industry, higher requirements are placed on the bearing capacity, the pulling resistance and the bending resistance of the precast pile, so that the precast pile with the variable cross section also appears. The bearing capacity and the pulling resistance of the precast pile can be improved in a mode of increasing the friction force between the pile body and the surrounding soil body due to the fact that the specific surface area of the precast pile with the variable cross section can be increased through the concave-convex pile body, but the shape is changed, and meanwhile new tests and requirements are provided for a forming die of the precast pile.

The prior art discloses a concrete precast pile forming die, which comprises split dies and a lining unit, wherein the split dies are combined through a die closing device, and a parting surface of the die is formed at the joint parts of the split dies; the lining unit is welded and fixed on the inner walls of the split dies, and a die cavity with the shape consistent with that of a concrete precast pile product is formed by the lining unit after die assembly.

In the forming die for manufacturing the variable cross-section concrete precast pile, the lining unit is welded and fixed on the inner wall of the split die, namely, the variable cross-section position of the variable cross-section precast pile is fixed and unadjustable. Therefore, when the length of the precast pile with variable cross section to be produced is changed, or the length of the thick pile section and/or the length of the thin pile section are/is changed according to the design requirement, the position of the variable cross section corresponding to the precast pile with variable cross section to be produced needs to be changed, however, the position of the lining unit in the structure can not be changed due to welding and fixing, only one precast pile with variable cross section with fixed specification and shape can be produced, and the universality is poor. Therefore, under the condition of different pile types of precast piles, only a plurality of moulds with different specifications can be manufactured to adapt to the manufacture of the precast piles with variable cross sections of different specifications, and the cost of the produced mould is higher.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide a brand-new variable cross section precast pile mould for the variable cross section position that the adjustment changed the variable cross section precast pile.

In order to solve the above problem, the utility model adopts the following technical scheme:

a variable cross-section precast pile mould is characterized by comprising an outer mould and a plurality of moulding moulds, wherein the outer mould is provided with a mould cavity, and the moulding moulds are arranged in the mould cavity at intervals along the length direction of the mould cavity; the modeling die is detachably arranged on the outer die through the lock catch, and when the lock catch is loosened, the modeling die can freely slide along the inner wall of the outer die in the die cavity; when the lock catch is locked, the modeling die is locked in the die cavity, and the outer wall of the modeling die is attached to the inner wall of the die cavity.

Furthermore, the outer die is a U-shaped die which is formed by splicing a plurality of templates and has an open structure at the upper part; the outer wall of the modeling mold is matched with the inner wall of the outer mold, the modeling mold is a U-shaped plate with an upper opening structure, and the modeling mold is used for modeling a thin pile section of the variable-section precast pile; an elastic mechanism is arranged between the modeling mold and the outer mold, and when the lock catch is locked, the elastic mechanism is folded; when the latch is released, the resilient mechanism is released.

Furthermore, the edges of the tops of the two sides of the modeling die extend outwards to form connecting parts, and the connecting parts are connected with the outer die through lock catches.

Furthermore, the lock catch comprises clamping pieces and fasteners, the clamping pieces are arranged at intervals on the connecting part of the modeling mold, the fasteners are slidably arranged on two sides of the top of the outer mold, or the fasteners are arranged at intervals on the connecting part of the modeling mold, and the clamping pieces are slidably arranged on two sides of the top of the outer mold; after the fastener is buckled with the clamping piece, the outer wall of the modeling mold is attached to the inner wall of the outer mold.

Furthermore, the top of external mold sets up the holding tank that can hold the slide rail along length direction, and elastic mechanism includes the elastic component of more than two along holding tank length direction interval arrangements, and the bottom of the tank of slide rail and holding tank is supported respectively to the both ends of elastic component.

Furthermore, the bottom surface of the connecting part of the modeling die is also provided with a roller capable of moving along the slide rail.

Furthermore, the outer die comprises a bottom plate, side plates positioned on two sides of the bottom plate in the width direction, and a supporting plate used for fixing the side plates, and the bottom plate and the side plates and/or the side plates and the supporting plate are clamped or joggled and fixed.

Furthermore, the bottom plate and/or the side plate are/is provided with a steam channel along the length direction of the mold cavity.

Furthermore, a through groove is longitudinally formed in one side face of the bottom plate, a longitudinally continuous or discontinuous bulge is arranged on the side plate opposite to the side face of the bottom plate, and the shape of the bulge is matched with that of the groove; or a through bulge is longitudinally arranged on one side surface of the bottom plate, a longitudinally continuous or discontinuous groove is arranged on the side surface of the side plate opposite to the side surface of the bottom plate, and the shape of the bulge is matched with that of the groove.

Further, the external mold and/or the modeling mold is a wood mold with the surface coated with waterproof, dampproof and wear-resistant paint; or the external mold and/or the modeling mold are steel molds.

The utility model has the advantages that:

(1) the molding die is detachably connected to the outer die through the lock catch, and when the lock catch is locked, the molding die can be fixed; when the lock catch is loosened, the modeling die can move along the inner wall of the outer die in the die cavity to adjust the position of the modeling die.

When the variable cross section precast pile length of required production changes, or the length dimension of thick stake section and/or the length dimension of thin stake section when the design requirement changes, the variable cross section position that corresponds the variable cross section precast pile of production need change, adjusts the variable cross section position that changes the variable cross section precast pile through adjusting the position of type mould in the die cavity, consequently passes through the utility model provides a brand-new variable cross section precast pile mould can produce the variable cross section precast pile of multiple specification shape, and above-mentioned variable cross section precast pile mould has increased the commonality of mould on the basis that current mould can only produce a fixed specification shape variable cross section precast pile to mould cost has been reduced.

In addition, when the lock catch is loosened, all the modeling dies can be taken out, and the variable-section precast pile die can be used for producing a straight pile with a constant cross section size in the state, so that the universality of the die is enhanced.

(2) An elastic mechanism is arranged between the modeling mold and the outer mold, and when the lock catch is locked, the elastic mechanism is folded; when the lock catch is loosened, the elastic mechanism is released; the device can be matched with the lock catch to lock when the elastic mechanism is folded, so that the modeling die can be tightly attached to the die cavity when used at a fixed position, and the modeling die and the die cavity form a variable-section precast pile molding die cavity together; when the elastic mechanism is released, the modeling mold moves upwards under the action of the elastic mechanism, a certain floating gap is formed between the modeling mold and the mold cavity of the outer mold, and the friction force between the outer wall of the modeling mold and the inner wall of the outer mold is reduced, so that the modeling mold can easily slide in the mold cavity of the outer mold, and therefore the modeling mold is pushed only by small force, and the manual strength or the load of a power element can be reduced.

Drawings

Fig. 1 is a perspective view of a precast pile mold with a variable cross section according to an embodiment of the present invention;

FIG. 2 is an enlarged view of the portion of the letter R in FIG. 1;

fig. 3 is a diagram illustrating a use state of the combined type modeling mold according to an embodiment of the present invention;

fig. 4 is a sectional view of another combined type mold according to an embodiment of the present invention, taken along the length of the mold;

fig. 5 is a front view of the precast pile mold with a variable cross section according to an embodiment of the present invention;

FIG. 6 is an enlarged view of the portion of FIG. 5 identified by the letter Q;

fig. 7 is a front view of another precast pile mold with a variable cross section according to an embodiment of the present invention;

FIG. 8 is an enlarged view of the portion of the letter P in FIG. 7;

fig. 9 is a front view of a bottom plate in an embodiment of the present invention;

fig. 10 is a front view of a side plate in an embodiment of the present invention;

fig. 11 is a perspective view of the outer mold in the embodiment of the present invention.

The list of labels in the figure is:

100. a variable cross-section precast pile mould; 101. a mold cavity;

1. an outer mold; 11. a side plate; 110. a protrusion; 1101. a swelling part; 1102. a necked-down portion; 111. a sliding groove; 112. a step groove; 113. accommodating grooves; 12. a base plate; 120. a groove; 1201. expanding the tank; 1202. a necking down groove; 13. a support plate; 14. a steam channel;

2. molding a mold; 21. a connecting portion; 2A, a combined type modeling die; 22. a molding side plate; 221. a first insertion groove; 23. molding a mold base plate; 231. a first insertion projection; 2B, another combined type modeling mold; 2a, a left end modeling die; 2a1, a second insertion projection; 2b, right end modeling; 2b1, a second insertion groove; 24. Drawing a mold inclined plane;

3. locking; 31. a fastener; 32. a fastener; 321. a buckle connecting plate; 322. buckling; 323. a sliding projection;

4. an elastic member;

5. a slide rail;

6. a roller;

200. and the other type of variable cross-section precast pile mould.

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 and fig. 2, the utility model provides a variable cross-section precast pile mould 100, this variable cross-section precast pile mould 100 includes external mold 1 and a plurality of type mould 2, the utility model provides a variable cross-section precast pile mould 100 provide more than one type mould 2 can. The outer die 1 is provided with a die cavity 101, and a plurality of modeling dies 2 are arranged in the die cavity 101 at intervals along the length direction of the die cavity 101; wherein, the modeling mold 2 is detachably arranged on the outer mold 1 through the lock catch 3, and when the lock catch 3 is released, the modeling mold 2 can freely slide along the inner wall of the outer mold 1 in the mold cavity 101 (mainly in the length direction and the height direction of the mold cavity 101); when the lock catch 3 is locked, the modeling die 2 is locked in the die cavity 101, and the outer wall of the modeling die is attached to the inner wall of the die cavity. By adopting the structure, the modeling die 2 is arranged in the die cavity 101 and is used for forming the thin pile section of the precast pile, so that the friction force between the variable cross-section precast pile and the surrounding soil body is increased, and the tensile and anti-pulling performance of the precast pile can be enhanced.

In a specific scheme, the outer die 1 is a U-shaped die which is formed by splicing a plurality of templates and has an open structure at the upper part; the outer wall of the modeling die 2 is matched with the inner wall of the outer die 1, the modeling die 2 is a U-shaped plate with an upper opening structure, and the modeling die 2 is used for modeling a thin pile section of the variable-section precast pile. The U-shaped mould and the U-shaped plate of the open structure enable the cloth to be more convenient and fast, and the cloth is usually distributed above the opening through a distribution vehicle and a distribution hopper. The spliced external mold 1 enables the external mold 1 to be detachable, and is beneficial to the transportation of the mold and the replacement of a vulnerable template.

Further, as shown in fig. 2 and 4, in order to make the modeling mold 2 fit with the inner wall of the outer mold 1, the edges of the two ends of the modeling mold 2 extend outward toward the inner wall of the outer mold 1 to form a draft bevel 24, and if the draft bevel 24 between the modeling mold 2 and the outer mold 1 is perpendicular to the inner wall of the outer mold 1, when the precast pile with a variable cross section is manufactured and demolded, the resistance is very large, and the finished pile cannot be demolded from the mold, so in this embodiment, a draft angle α is formed between the draft bevel 24 and the inner wall of the outer mold 1, and is 90 ° < α < 180 °.

In addition to the above-mentioned integrated modeling mold, the modeling mold may be a combined type, as shown in fig. 3, the combined type modeling mold 2A is composed of a modeling mold side plate 22 and a modeling mold bottom plate 23, wherein a first inserting groove 221 is formed in a side surface of the modeling mold side plate 22 contacting the modeling mold bottom plate 23, a first inserting protrusion 231 is formed in a side of the modeling mold bottom plate 23 corresponding to the first inserting groove 221, an inner side surface of the modeling mold side plate 22 is inserted perpendicular to an upper surface of the modeling mold bottom plate 23 so that the first inserting protrusion 231 is completely accommodated in the first inserting groove 221, and at this time, no gap is formed between the modeling mold side plate 22 and the modeling mold bottom plate 23. The structural design of the combined modeling die 2A enables the modeling die side plates 22 and the modeling die bottom plate 23 to be detachably connected, and corresponding templates are replaced under the condition that the modeling die is partially deformed instead of being integrally replaced, so that the maintenance cost is reduced.

The present embodiment also provides another combined type mold 2B, and as shown in fig. 4, the other combined type mold 2B is in a split joint type in the mold length direction. The other combined type modeling mold 2B is composed of a left end modeling mold 2a and a right end modeling mold 2B, wherein a second inserting protrusion 2a1 is arranged on one side surface of the left end modeling mold 2a, which is in contact with the right end modeling mold 2B, a second inserting groove 2B1 is arranged on one side of the right end modeling mold 2B, which corresponds to the second inserting protrusion, 2a1 is arranged on one side surface of the left end modeling mold 2a, which is in contact with the right end modeling mold 2B, and the bottom molding surfaces of the left end modeling mold 2a and the right end modeling mold 2B are coplanar and close to each other, so that the second inserting protrusion 2a1 is completely accommodated in the second inserting groove 2B 1. The structural design of the other combined type modeling mold 2B enables the left end modeling mold 2a and the right end modeling mold 2B to be detachably connected, and corresponding templates are replaced under the condition that the other combined type modeling mold 2B is partially deformed instead of being integrally replaced, so that the maintenance cost is reduced. In addition, the other combined type modeling die 2B can also be used for manufacturing the variable-section precast pile with a wider length specification range of the variable-section thin pile section or the thick pile section, and the universality of the variable-section precast pile die is improved.

Further, as shown in fig. 5, an elastic mechanism is arranged between the modeling die 2 and the outer die 1, and when the lock catch 3 is locked, the elastic mechanism is folded; when the catch 3 is released, the resilient means is released. The arrangement enables the moulding die 2 to be tightly attached to the die cavity 101 when being used at a fixed position, and the moulding die and the die cavity 101 form the variable cross-section precast pile moulding die cavity 101 together; when the elastic mechanism is released, the pushing of the moulding mould 2 in the cavity 101 of the external mould 1 can depend on manpower or power elements (not shown in the figure), and as a certain gap is formed between the moulding mould 2 and the cavity 101 of the external mould 1 under the release of the elastic mechanism, the moulding mould 2 can easily slide in the cavity 101 of the external mould 1, so that the small force is only needed to push the moulding mould 2, and the manual strength or the load of the power elements can be reduced.

In detail, as shown in fig. 5, the top edges of both sides of the modeling die 2 extend outwards to form the connecting parts 21, the connecting parts 21 are located above the top of the external die 1, the lower surfaces of the connecting parts 21 correspond to the upper surface of the top of the external die 1, and preferably, the lower surfaces of the connecting parts 21 are attached to the upper surface of the top of the external die 1, and the attaching surfaces of the connecting parts 21 and the top of the external die 1 are used as installing position marks when the modeling die 2 is installed, so that the situation that the installation is not in place is avoided. Further, the connecting part 21 is connected with the outer die 1 through the lock catch 3, when the lock catch 3 is locked, the outer wall of the modeling die 2 is attached to the inner wall of the outer die 1 and does not move relatively, and the modeling die 2 and the outer die 1 do not slide relatively during material distribution, so that the position of a thin pile section of the variable cross-section precast pile prepared by the die is ensured, and the compression and pull resistance are ensured; when the lock catch 3 is released, the molding die 2 and the outer die 1 can slide relatively without locked external acting force.

Further, as shown in fig. 5 and 6, the locking buckle 3 includes clamping pieces 31 and fasteners 32, the clamping pieces 31 are arranged at intervals on the connecting portion 21 of the modeling mold 2, and the fasteners 32 are slidably mounted on two sides of the top of the outer mold 1, or the fasteners are arranged at intervals on the connecting portion of the modeling mold and the clamping pieces are slidably mounted on two sides of the top of the outer mold. The fastener 32 comprises a buckle connecting plate 321 and a buckle 322, and after the buckle 322 is buckled with the clamping piece 31, the outer wall of the modeling mold 2 is attached to the inner wall of the outer mold 1.

As shown in fig. 1 and 6, the clip 31 and the clip 32 can be fastened in an L shape, the joint between the clip 32 and the top of the outer mold 1 includes a sliding protrusion 323, and correspondingly, the top of the outer mold 1 has a sliding groove 111 matching with the sliding protrusion 323, when the position of the molding die 2 needs to be adjusted, the clip 322 and the clip 31 are disengaged, the molding die 2 and the clip 32 corresponding to the clip 31 are pushed to the corresponding position, after the adjustment is finished, the clip 322 and the clip 31 of the joint 21 are engaged, the molding die 2 is fixed again, and the outer wall thereof is attached to the inner wall of the outer mold 1.

As shown in fig. 7 and 8, another variable cross-section precast pile mould is further provided in this embodiment, the clamping piece 31 and the fastening piece 32 may be fastened in an I shape, at this time, a step groove 112 for accommodating the connecting portion 21 of the modeling mold 2 is formed at the top of the side plate 11 of the outer mold 1, the upper surface of the connecting portion 21 is coplanar with the top surface of the side plate 11 of the outer mold 1, the fastening piece 32 is mounted on the top surface of the side plate 11 of the outer mold 1, and a connecting portion between the fastening piece 32 and the top of the outer mold 1 includes a sliding protrusion 323, and correspondingly, the top of the outer. Similarly, the connection between the fastener 32 and the top of the outer mold 1 may also include a sliding groove 111, and correspondingly, the top of the outer mold 1 has a sliding protrusion 323 matching with the sliding groove 111. The locking piece 32 can slide along the length direction of the mold by the matching of the sliding groove 111 and the sliding protrusion 323, and the locking piece 31 on the connecting part 21 of the molding mold 2 is matched to lock the molding mold 2.

As shown in fig. 5, the top of the outer mold 1 is provided with a receiving groove 113 along the length direction for receiving the sliding rail 5, the elastic mechanism includes more than two elastic members 4 arranged at intervals along the length direction of the receiving groove 113, and two ends of the elastic members 4 respectively abut against the sliding rail 5 and the groove bottom of the receiving groove 113. The elastic part 4 can be an elastic element such as a spring, an elastic ball, an elastic block and the like, the buckle 322 is buckled with the clamping piece 31 after the elastic part 4 is pressed, the outer wall of the modeling mold 2 is attached to the inner wall of the outer mold 1, the buckling is more reliable due to the deformation resistance generated after the elastic part 4 is pressed, and the fastener 32 is not easy to loosen; when the buckle 322 and the clamping piece 31 are disengaged from each other, the sliding rail 5 and the modeling mold 2 move upwards for a certain distance under the resilience action of the elastic piece 4, a certain gap is kept between the outer wall of the modeling mold 2 and the inner wall of the outer mold 1, the friction force between the modeling mold 2 and the outer mold 1 is reduced, and under the arrangement, the movement of the modeling mold 2 is more labor-saving, so that the modeling mold 2 can be manually pushed without adopting mechanical equipment.

In a particular embodiment, the moulding die 2 can be slidably moved by sliding or rolling actuators. The sliding or rolling element may be one of the executing element combinations such as a combination of a slide block and a slide rail 5, a combination of a slide block and a linear guide rail, and a combination of a roller 6 and a slide rail 5, and the friction resistance is reduced by sliding or rolling friction, so that the modeling mold 2 slides smoothly along the length direction of the mold.

In comparison, the combined form of the roller 6 and the sliding rail 5 has simpler executing element and lower cost, and is a preferable scheme of the embodiment of the invention. As shown in fig. 5, the bottom surface of the connecting portion 21 of the molding die 2 is provided with a roller 6 capable of traveling along the slide rail 5. In this embodiment, the contact surface between the roller 6 and the slide rail 5 is V-shaped, and the slide rail 5 may be made of angle steel.

In addition, the embodiment of the present invention does not limit the specific shapes of the roller 6 and the sliding rail 5, and those skilled in the art can set the shapes according to actual needs in specific implementation.

As shown in fig. 5 and 9, the outer mold 1 includes a bottom plate 12, side plates 11 located on both sides of the bottom plate 12 in the width direction, and a support plate 13 for fixing the side plates 11, and the bottom plate 12 and the side plates 11 and/or the side plates 11 and the support plate 13 are fixed by snap-fit or mortise-fit. By adopting the connection arrangement, the external mold 1 can be connected by the structure of the external mold, so that the part cost consumed by other connection modes such as threaded connection, pin shaft connection and the like is reduced; in addition, the external mold 1 is detachably connected with the bottom plate 12, the side plates 11 and the supporting plate 13, so that the mold is more convenient to transport, the use site of the mold is not limited in a precast pile factory any more, and the mold can also be applied to the field preparation of the precast pile with the variable cross section on a construction site.

In a specific scheme, referring to fig. 9, a through groove 120 is longitudinally formed in one side surface of the bottom plate 12 (i.e., in the length direction of the mold cavity 101), the side plate 11 opposite to the side surface of the bottom plate 12 is provided with a longitudinally continuous/or discontinuous protrusion 110, and the protrusion 110 is matched with the groove 120 in shape; or, a through protrusion 110 is longitudinally formed on one side surface of the bottom plate 12, a longitudinally continuous/discontinuous groove 120 is formed on the side surface of the side plate 11 opposite to the side surface of the bottom plate 12, and the protrusion 110 is matched with the groove 120 in shape. Similarly, the outer side surface of the side plate 11 is longitudinally provided with a through second groove, the support plate 13 opposite to the side surface of the side plate 11 is provided with a longitudinally continuous/discontinuous second protrusion, and the shape of the second protrusion is matched with that of the second groove; or, the outer side surface of the side plate 11 is longitudinally provided with a through second protrusion, the side surface of the support plate 13 opposite to the side surface of the side plate 11 is provided with a longitudinally continuous/discontinuous second groove, and the shape of the second protrusion is matched with that of the second groove.

Specifically, as shown in fig. 9, the through groove 120 formed in the side surface of the base plate 12 in the longitudinal direction includes two portions, i.e., an enlarged groove 1201 and a constricted groove 1202. The maximum linear distance of the expansion groove 1201 in the height direction of the die is L1, the maximum linear distance of the necking groove 1202 in the height direction of the die is L2, and L2 with L1 being more than 1.2 times is arranged, so that the protrusion 110 matched and connected with the expansion groove can only move in the length direction of the die but cannot move in the width direction of the die, and the structure stability of the assembled outer die 1 is guaranteed, and the quality of the variable-section precast pile prepared by the die is guaranteed.

As shown in fig. 10, the through boss 110 formed in the side surface of the side plate 11 in the longitudinal direction includes two portions, i.e., an enlarged portion 1101 and a constricted portion 1102. The maximum linear distance of the expansion part 1101 along the height direction of the die is L3, the maximum linear distance of the necking part 1102 along the height direction of the die is L4, and L4 with L3 being more than 1.2 times is arranged, so that the protrusion 110 in the corresponding groove 120 can only move along the length direction of the die but can not move along the width direction of the die, and the assembled structural stability of the outer die 1 is favorably ensured, thereby ensuring the quality of the variable-section precast pile prepared by the die. The shape of the protrusion 110 is matched with that of the groove 120, and the protrusion 110 can be completely accommodated in the groove 120 after clamping to form stable clamping.

Further, the maximum value of the linear distance of the enlarged part 1101 in the mold height direction is L3 or less and L1 or more and L2 of 1.2 times or more. By adopting the structure, the expansion part 1101 of the protrusion 110 can smoothly enter the corresponding groove 120, and the bottom plate 12 and the two side plates 11 form a stable structure without relative sliding after being completely installed.

As shown in fig. 11, the bottom plate 12 and/or the side plate 11 are provided with a steam passage 14 along the length direction of the cavity 101. In order to improve the production efficiency of the variable cross-section precast pile mould, the steam channel 14 is arranged on the outer mould 1 along the length direction of the mould cavity 101, so that the problem that the mould needs to be hoisted into a steam curing pool for steam curing in the traditional process is avoided. In this embodiment, the variable cross-section precast pile mold is open at the top, so as to ensure the steam-curing effect, a heat-insulating covering structure (not shown in the figure) for sealing the open top is disposed above the variable cross-section precast pile mold, and further, the heat-insulating covering structure may be a rolling shutter type rolling cover, and the mold cavity 101 is closed by rolling and pulling, so that the operation is simple and convenient. The heat preservation covering structure can also be a plate-type sealing cover, a steam channel 14 can be arranged in the plate-type sealing cover, the steam curing effect is improved, sealing strips can be arranged on the periphery of the plate-type sealing cover, the sealing effect is improved, and then steam leakage is prevented during steam curing.

The external mold 1 and/or the modeling mold 2 are wooden molds with the surfaces coated with waterproof, dampproof and wear-resistant paint; or, the external mold 1 and/or the modeling mold 2 are steel molds.

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 (10)

1. A variable cross-section precast pile mould is characterized by comprising an outer mould and a plurality of moulding moulds, wherein the outer mould is provided with a mould cavity, and the moulding moulds are arranged in the mould cavity at intervals along the length direction of the mould cavity;

the modeling die is detachably arranged on the outer die through the lock catch, and when the lock catch is loosened, the modeling die can freely slide along the inner wall of the outer die in the die cavity; when the lock catch is locked, the modeling die is locked in the die cavity, and the outer wall of the modeling die is attached to the inner wall of the die cavity.

2. The variable cross-section precast pile mould according to claim 1, wherein the outer mould is a U-shaped mould which is formed by splicing a plurality of mould plates and has an open structure at the upper part; the outer wall of the modeling mold is matched with the inner wall of the outer mold, the modeling mold is a U-shaped plate with an upper opening structure, and the modeling mold is used for modeling a thin pile section of the variable-section precast pile;

an elastic mechanism is arranged between the modeling mold and the outer mold, and when the lock catch is locked, the elastic mechanism is folded; when the latch is released, the resilient mechanism is released.

3. The precast pile mould with the variable cross section according to claim 1 or 2, wherein the top edges of the two sides of the modeling mould extend outwards to form connecting parts, and the connecting parts are connected with the outer mould through locking buckles.

4. The variable cross-section precast pile mould according to claim 3, wherein the lock catch comprises clamping pieces and fastening pieces, the clamping pieces are arranged at intervals on the connecting part of the modeling mould, and the fastening pieces are slidably arranged at two sides of the top of the outer mould, or the fastening pieces are arranged at intervals on the connecting part of the modeling mould, and the clamping pieces are slidably arranged at two sides of the top of the outer mould;

after the fastener is buckled with the clamping piece, the outer wall of the modeling mold is attached to the inner wall of the outer mold.

5. The precast pile mould with the variable cross section according to claim 2, wherein the top of the outer mould is provided with a receiving groove along the length direction for receiving the slide rail, the elastic mechanism comprises more than two elastic members arranged at intervals along the length direction of the receiving groove, and two ends of the elastic members respectively abut against the slide rail and the groove bottom of the receiving groove.

6. The precast pile mould with variable cross section according to claim 5, wherein the bottom surface of the connecting part of the shaping mold is further provided with rollers capable of traveling along a slide rail.

7. The variable cross-section precast pile mould according to claim 1 or 2, wherein the outer mould comprises a bottom plate, side plates located on two sides of the bottom plate in the width direction, and a support plate for fixing the side plates, and the bottom plate and the side plates and/or the side plates and the support plate are fixed in a clamping or joggling manner.

8. The precast pile mold with the variable cross section according to claim 7, wherein the bottom plate and/or the side plate is provided with a steam channel along the length direction of the mold cavity.

9. The variable cross-section precast pile mould according to claim 7, wherein a through groove is longitudinally formed on one side surface of the bottom plate, a longitudinally continuous/or discontinuous bulge is formed on the side plate opposite to the side surface of the bottom plate, and the bulge is matched with the groove in shape;

or a through bulge is longitudinally arranged on one side surface of the bottom plate, a longitudinally continuous or discontinuous groove is arranged on the side surface of the side plate opposite to the side surface of the bottom plate, and the shape of the bulge is matched with that of the groove.

10. The precast pile mould with the variable cross section according to any one of claims 1 to 2, 4 to 6 and 8 to 9, wherein the external mould and/or the modeling mould is a wood mould coated with waterproof, moistureproof and wear-resistant paint on the surface;

or the external mold and/or the modeling mold are steel molds.

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