CN213226794U - Precast pile mould group - Google Patents

Abstract

The utility model provides a precast pile mould group, which comprises a mould component, wherein the mould component is provided with at least two mould cavities capable of respectively forming a precast pile, thus a plurality of precast piles can be produced in the same batch to meet the requirement of rapid production; the mould base assembly is fixedly arranged on the hard bearing surface; the mould assembly is detachably locked on the mould base assembly through the fastening assembly, and when the fastening assembly is locked, the mould assembly can be at least limited to move towards the direction far away from the hard bearing surface when the precast pile is demoulded; by adopting the structural arrangement mode, on one hand, when the precast pile is demoulded after being formed, the mould assembly cannot move upwards along with the precast pile, so that the precast pile is favorably demoulded smoothly, and the damage to the pile shape is favorably prevented; on the other hand, the mould components with different sizes and pile shapes can be conveniently replaced, so that the requirements of precast piles with different sizes and pile shapes in building production are met.

Description

Precast pile mould group

Technical Field

The utility model belongs to precast pile mould field, concretely relates to precast pile mould group.

Background

Along with the vigorous development of the building industry, the precast concrete square pile with high construction speed becomes a concrete product with larger yield in precast components in China. However, at present, a single precast concrete square pile mold is generally adopted by a factory to produce a precast concrete square pile, and each precast concrete square pile mold can only be used for correspondingly manufacturing and forming one precast pile, so that the requirement of building production is difficult to meet.

In the prior art, a precast pile mould set comprises a first side form and a second side form which are arranged oppositely; and at least one intermediate die detachably arranged adjacently in sequence between the first side die and the second side die; the bottom edge of the first side die and the bottom edge of the second side die are respectively connected with the bottom edge of a middle die; two sides of the vertical edge of the middle die are respectively provided with a molding die cavity. Above-mentioned precast pile mould group is through setting up middle mould for the perpendicular limit both sides of middle mould form the shaping die cavity respectively, thereby can realize every batch of two at least precast piles of shaping of every mould, can satisfy the demand of quick production. However, during the production process it was found that: because the finished precast pile product and the precast pile mould are tightly combined, when the precast concrete square pile is demoulded after being formed, the precast pile mould set easily moves upwards along with the precast concrete square pile, and the precast concrete square pile is difficult to demould and is easily damaged or deformed. Therefore, on the premise of meeting the requirement of rapid production, it is important to find a precast pile die set easy to demould.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a satisfying the precast pile mould group that produces the demand fast, easily drawing of patterns.

For solving the above technical problem, the utility model provides a precast pile mould group, include: the mould comprises at least one mould assembly with at least two mould cavities and a mould base assembly which is fixedly arranged on a hard bearing surface; the mould assembly is detachably locked on the mould base assembly through the fastening assembly, and the fastening assembly at least can limit the mould assembly to move towards the direction far away from the hard bearing surface when the precast pile is demoulded.

Further, the mold assembly comprises a mold unit and a spacer for bearing the mold unit, and the mold unit and the spacer are fixedly installed; the spacing support is provided with a supporting rod matched with the outline of the die unit and transverse supporting rods uniformly distributed at intervals along the length direction of the die cavity; the mould base assembly comprises support frames which are uniformly arranged along the length direction of the mould cavity at intervals; the separation support of the mould component is detachably connected with the support frame.

Further, the fastening assembly includes: the mould base assembly comprises a plurality of buckling pieces and a plurality of locking pieces, wherein the buckling pieces are arranged on one of the spacing support and the mould base assembly at intervals;

the retaining member has the draw-in groove that supplies to detain the even joint, detains even and retaining member assembled connection back, and the mould subassembly is fixed in mould base subassembly.

Furthermore, the locking piece is provided with a clamping groove which is approximately U-shaped, and the opening directions of the clamping grooves at least used for locking the same mould component are approximately the same; the buckling piece is clamped with the corresponding clamping groove, so that the mold assembly can be locked at least along the height direction of the mold cavity.

Further, the locking member includes: the clamping device comprises at least two clamping blocks and a driving mechanism which is connected with the clamping blocks and drives the clamping blocks to move; the driving mechanism can drive the clamping blocks to move, the buckle connecting piece is fixedly embraced between the clamping blocks, and the mold assembly is fixed through locking.

Furthermore, a transverse sliding groove is formed in the side wall of the support frame, and the locking piece is connected with the support frame in a sliding mode through the transverse sliding groove; the retaining member can slide relative to the transverse sliding groove and is clamped with the corresponding buckling member, so that the mold assembly is at least locked along the height direction of the mold cavity.

Further, the mould base component also comprises a jacking mechanism, the jacking mechanism is arranged at intervals along the width direction of the mould cavity, and the bottom mould plate of the mould unit is provided with a through hole for the jacking mechanism to pass through.

Furthermore, the fastening assembly also comprises an upper pulling plate, a first nut and a second nut, the upper pulling plate is provided with a mounting hole for the buckling piece to pass through, and the buckling piece is mounted and fixed on the die assembly spacer through the upper pulling plate;

the buckling connecting piece is provided with a middle part clamped in the clamping groove, one end of the buckling connecting piece extends into the mounting hole and is fixedly mounted with the upper pulling plate, and the other end of the buckling connecting piece forms a clamping head for limiting the buckling connecting piece to be separated; the first nut, the second nut and one end of the buckle connecting piece extending into the mounting hole are in threaded connection, and the first nut and the second nut are respectively located on two sides of the upper pulling plate.

Further, the die unit comprises at least two strip dies which are sequentially arranged along the width direction of the die cavity, the strip dies are U-shaped dies with an upper opening structure, and two adjacent strip dies can be connected and fixed;

or the mould unit comprises at least two strip-shaped moulds which are sequentially arranged along the width direction of the mould cavity, and the two adjacent strip-shaped moulds share the same side mould plate.

Furthermore, the device also comprises a steam pipeline arranged along the circumferential direction and/or the length direction of the mould component, and heat insulation cotton and a water-stop sheet laid at the bottom of the mould component;

preferably, the steam pipeline is arranged on the inner side wall of the mold base assembly and is lower than the bottom template of the mold unit.

Compared with the prior art, the precast pile mould set provided by the utility model comprises a mould component, wherein the mould component is provided with at least two mould cavities capable of respectively forming a precast pile, so that a plurality of precast piles can be produced in the same batch to meet the requirement of rapid production; the mould base assembly supporting the mould assembly is fixedly arranged on the hard bearing surface, the mould assembly is detachably locked on the mould base assembly through the fastening assembly, and when the fastening assembly is locked, the mould assembly can be at least limited to move towards the direction far away from the hard bearing surface when the precast pile is demoulded; by adopting the structural arrangement mode, on one hand, when the precast pile is demoulded after being formed, the mould assembly cannot move upwards along with the precast pile, so that the precast pile is favorably demoulded smoothly, and the damage to the pile shape is favorably prevented; on the other hand, the mould components with different sizes and pile shapes can be conveniently replaced, so that the requirements of precast piles with different sizes and pile shapes in building production are met.

Drawings

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

FIG. 2 is a schematic sectional view taken along line F-F in FIG. 1;

FIG. 3 is an enlarged partial schematic view of region C of FIG. 2;

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

fig. 5 is a schematic structural view of a spacer in an embodiment of the present invention;

FIG. 6 is an enlarged partial schematic view of area A of FIG. 5;

fig. 7 is a schematic structural view of one embodiment of a mold base assembly in an embodiment of the present invention;

FIG. 8 is an enlarged, fragmentary schematic view of a first embodiment of area B of FIG. 7;

FIG. 9 is an enlarged, fragmentary schematic view of a second embodiment of area B of FIG. 7;

FIG. 10 is an enlarged, fragmentary view of a third embodiment of area B of FIG. 7;

fig. 11 is a schematic structural diagram of another embodiment of the mold base assembly according to the embodiment of the present invention.

In the drawings:

100. prefabricating a pile mould set;

1. a mold assembly; 11. a mold unit; 12. separating and supporting; 121. a support bar; 122. a transverse support bar; 123. A vertical support bar; 13. a mold cavity;

2. a mold base assembly; 21. a support frame; 211. a transverse chute; 22. a steam line; 23. a jacking mechanism;

3. a fastening assembly; 31. a locking member; 311. a card slot; 312. a clamping block; 32. a fastening piece; 321. clamping a head; 33. pulling up the plate; 34. a first nut; 35. a second nut;

4. a fastener.

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 one >

With reference to fig. 1 and 2, the present embodiment provides a precast pile mold set 100, where the precast pile mold set 100 includes a plurality of mold assemblies 1 that can be arranged in a horizontal and/or vertical arrangement, but the present invention provides a precast pile mold set 100 that includes at least one mold assembly 1. The mould component 1 comprises at least two mould cavities 13 which are sequentially arranged in parallel, the top of each mould cavity 13 is open, concrete distribution and demoulding of a precast pile finished product can be carried out from the top of each mould cavity 13, at least two mould cavities 13 can respectively form a precast pile, and the mould component can be used for producing a plurality of precast piles in the same batch to meet the requirement of rapid production.

In addition, the precast pile mould set 100 provided by this embodiment further includes a mould base assembly 2 fixed on a hard bearing surface (such as a ground surface, a cement ground surface, or a supporting surface for laying a plate material, etc.), and the mould base assembly 2 is fixed on the hard bearing surface by a fastener 4; the mould assembly 1 is detachably locked on the mould base assembly 2 through the fastening assembly 3, and when the fastening assembly 3 is locked, the mould assembly 1 can be at least limited to move towards a direction far away from the hard bearing surface (namely towards the top of the mould cavity from the hard bearing surface) when the precast pile is demoulded; by adopting the structural arrangement mode, on one hand, when the precast pile is demoulded after being formed, the mould assembly can be prevented from moving upwards along with the precast pile, so that the precast pile can be demoulded smoothly, and the damage to the pile shape can be prevented; on the other hand, the mould components with different sizes and pile shapes can be conveniently replaced, so that the requirements of precast piles with different sizes and pile shapes in building production are met.

Referring to fig. 4, the mold assembly 1 includes a mold unit 11 and a separation support 12, the separation support 12 is used for bearing the mold unit 11, the mold unit 11 and the separation support 12 are installed and fixed, the fixing modes of the mold unit 11 and the separation support 12 can be in various forms, as long as it can be ensured that the mold unit 11 and the separation support 12 form a combined body, wherein the fixing modes include welding, screwing, clamping and the like. Because the bearing capacity and the structural strength of the die unit 11 are limited, the spacer 12 can be used for carrying out structural reinforcement on the die unit 11 and providing a certain supporting function.

Specifically, referring to fig. 4 and 5, the spacer 12 has a support rod 121 adapted to the contour of the mold unit 11, a transverse support rod 122 uniformly distributed at intervals along the length direction of the mold cavity 13, and a vertical support rod 123 fixedly mounted to the transverse support rod 122 and extending along the height direction of the mold cavity 13; the mould unit 11 is arranged in and is separated propping 12 and installation fixed, wherein, the lower bottom surface and the horizontal bracing piece 122 butt of the die unit 11 die block board and installation fixed, the lateral wall and the vertical bracing piece 123 butt of the die unit 11 side form board and installation fixed, set up like this and separate propping 12 and can form for the mould unit 11 and support fixed knot and construct, can be favorable to firm mould unit 11. The die unit 11 comprises at least two strip dies which are sequentially arranged along the width direction of the die cavity 13, the strip dies are U-shaped dies with an upper opening structure, and at least two adjacent strip dies can be connected and fixed to form the die unit 11; alternatively, the mold unit 11 includes at least two strip molds arranged in sequence along the width direction of the mold cavity 13, and two adjacent strip molds share the same side mold plate. Such a mold unit structure can produce a plurality of precast piles in the same batch production process, and reduce the number of templates to reduce the mold cost, thereby also satisfying the requirement for rapid production.

Referring to fig. 7, the mold base assembly 2 includes support frames 21 uniformly arranged at intervals along the length direction of the mold cavity, and the support frames 21 are used for supporting the mold assembly 1; the spacing support 12 of the mould component 1 is detachably connected with the support frame 21, and the mould component 1 and the mould base component 2 are fixedly installed through the fastening component 3.

In the present embodiment, referring to fig. 1 to 3 and 7, the fastening assembly 3 includes: a plurality of buckling pieces 32 arranged on one of the spacing support 12 and the mold base component 2 at intervals, and a plurality of locking pieces 31 arranged on the other one of the support frame 21 of the mold base component and the spacing support 12 at intervals and matched with the buckling pieces 32; the locking member 31 has a slot 311 for the fastening member 32 to be fastened, and after the fastening member 32 is assembled with the locking member 31, the mold assembly 1 is fixed on the top of the mold base assembly 2.

Specifically, in this embodiment, referring to fig. 2, 3, and 6, the fastening assembly 3 further includes an upper pulling plate 33, the upper pulling plate 33 has a mounting hole for the fastening piece 32 to pass through, and the fastening piece 32 is mounted and fixed on the mold assembly spacer 12 through the upper pulling plate 33, where the mounting and fixing manner includes welding, screwing, and the like; preferably, the fastening member 32 is fixedly connected to the transverse support bar 122 of the mold assembly spacer by an upper pulling plate 33; the fastening piece 32 is provided with a middle part clamped in the clamping groove 311, one end of the fastening piece 32 with an external thread extends into the mounting hole and is fixedly connected with the upper pulling plate 33, and the other end of the fastening piece 32 is provided with a clamping head 321 for limiting the fastening piece 32 to be separated away from the hard bearing surface when the precast pile is demoulded; wherein, the end of the fastening piece 32 extending into the mounting hole is connected with the upper pulling plate 33 through the first nut 34 and the second nut 35 by screw thread, and the first nut 34 and the second nut 35 are respectively positioned at two sides of the upper pulling plate 33. The length of the fastening piece 32 extending to the mold base assembly 2 can be adjusted by adjusting the first nut 34 and the second nut 35, so that the fastening piece 32 and the locking piece 31 can be more stable and reliable when locked. Certainly, the fastening assembly 3 may not be provided with an upper pulling plate, and the fastening piece 32 and the mold assembly spacer or the mold assembly bottom template may be directly fixed by welding, screwing, or the like; or after the fastening piece 32 is welded with the upper pulling plate 33, the assembly formed by the fastening piece 32 and the upper pulling plate 33 is fixed with the mold assembly spacer or the mold assembly bottom template through welding, screwing and the like.

Further, referring to fig. 2, 3, 5 to 8, in order to facilitate the assembly of the mold assembly 1, in the embodiment, the locking member 31 has a substantially U-shaped slot 311, and the opening direction of the slot 311 is substantially perpendicular to the extending direction of the fastening member 32, wherein the fastening member 32 can be ensured to be smoothly inserted into the slot 311; moreover, the opening directions of the clamping grooves 311 at least used for locking the same mould component 1 are approximately the same, and the buckling piece 32 is clamped with the corresponding clamping groove, so that the mould component 1 can be at least limited to move towards the direction far away from the hard bearing surface when the precast pile is demoulded; specifically, after the mold assembly 1 is placed on the support frame 21, the fastening member 32 is located at the opening side of the corresponding locking member 31, and the mold assembly 1 is moved to the other side of the opening of the locking member 311 to clamp the fastening member 32 into the locking slot 311, so that the mold assembly 1 is locked at least along the height direction of the mold cavity 13. Therefore, when the prefabricated pile is demoulded after being formed, the mould component 1 can be prevented from moving upwards along with the prefabricated pile, the prefabricated pile can be favorably demoulded smoothly, and the pile shape damage of the prefabricated pile can be favorably prevented.

When precast piles with different sizes and pile shapes are required to be formed, the mould component 1 is moved towards the opening side of the clamping groove 311, the buckling piece 32 is moved out of the clamping groove 311, so that the mould component 1 and the mould base component 2 are unlocked, then the mould component 1 is lifted away from the mould base component 2, and the mould component meeting the requirement is replaced; certainly, the die base assembly 2 can be simultaneously assembled with two different sets of die assemblies 1, so that precast piles with different sizes and pile shapes can be simultaneously formed to meet the requirements of building production.

In the present embodiment, referring to fig. 1 and 7, the precast pile mould set 100 further includes a steam pipeline 22 arranged along the circumferential direction and/or the length direction of the mould assembly 1, and heat insulation cotton and a water-stop sheet laid at the bottom of the mould assembly 1; preferably, the steam pipe 22 is arranged on the inner side wall of the mold base assembly 2 and is lower than the bottom mold plate of the mold unit.

Specifically, in order to improve the production efficiency of the precast pile die set, steam pipelines 22 are arranged along the circumferential direction of the die assembly 1 and/or along the length direction of the die cavity 13, and the outer walls of the steam pipelines 22 are uniformly provided with air outlets at intervals, so that the problem that the die assembly needs to be hoisted into a steam curing pool for steam curing in the traditional process is avoided; in order to prevent the steam pipe from being damaged by colliding with the steam pipe when the mold assembly is loaded, the steam pipe is preferably arranged on the inner side wall of the mold base assembly 2 and below the bottom mold plate of the mold unit. In this embodiment, the precast pile mold set is open at the top, so as to ensure the steam curing effect, a heat-insulating covering structure (not shown) for sealing the open top is disposed above the precast pile mold set 100, and further, the heat-insulating covering structure can enable the rolling shutter type rolling cover to seal the mold cavity 13 in a rolling and pulling manner, so that the operation is simple and convenient. Certainly, the heat-preservation covering structure can also be a plate-type sealing cover, and a steam pipeline 22 can also be arranged in the plate-type sealing cover, so that the steam curing effect is improved; furthermore, in order to further guarantee the steam curing effect, the bottom of the mold assembly 1 is sequentially provided with a water-stop sheet and heat-preservation cotton, sealing strips can be arranged around the plate-type sealing cover, the sealing effect is improved, and steam leakage is prevented during steam curing.

< example two >

In the present embodiment, the same portions as those in the first embodiment are given the same reference numerals, and the same description is omitted.

The main differences between this embodiment and the first embodiment are: the connecting mode of the fastening piece and the locking piece.

In this embodiment, referring to fig. 2, 6 and 9, the locking member 31 includes at least two clamping blocks 312, and a driving mechanism connected to the clamping blocks 312 and driving the clamping blocks to move, the driving mechanism drives the clamping blocks 312 to secure the fastening member 32 between the clamping blocks 312, and the mold assembly 1 is locked and fixed.

Specifically, a clamping groove 311 for the fastening piece 32 to extend into can be formed between the clamping blocks 312, after the mold assembly 1 is placed on the support frame 21, the fastening piece 32 is located in the clamping groove 311 formed by the clamping blocks 312, the clamping blocks 312 are driven to move through the driving mechanism, the fastening piece 32 is fixedly embraced between the clamping blocks 312, and therefore the mold assembly 1 is locked and fixed. Set up like this and make when drawing of patterns after the precast pile shaping, can prevent that the mould subassembly from along with the precast pile rebound, be favorable to the precast pile to go out the mould smoothly to be favorable to preventing that precast pile stake shape from damaging. In addition, compared with the first embodiment, in the first embodiment, after the mold assembly 1 is placed on the supporting frame 21, only the retaining member clamping blocks 312 need to be controlled to lock the fastening members 32, and the mold assembly does not need to be moved, so that labor force can be reduced to a certain extent, and manpower resources can be saved.

When precast piles with different sizes and pile shapes are required to be formed, the clamping blocks of the locking parts are driven by the driving mechanism to release the buckling parts, so that the mould assembly 1 and the mould base assembly 2 are unlocked, then the mould assembly is lifted away from the mould base assembly, and the mould assembly meeting the requirements is replaced; certainly, the die base assembly can be simultaneously assembled with two groups of different die assemblies, so that precast piles in different sizes and pile shapes can be simultaneously formed to meet the requirements of building production.

< example three >

In the present embodiment, the same portions as those in the first embodiment are given the same reference numerals, and the same description is omitted.

The main differences between this embodiment and the first embodiment are: the connecting mode of the fastening piece and the locking piece.

In this embodiment, referring to fig. 2, 6, and 10, a lateral sliding slot 211 is formed in a side wall of the supporting frame 21, the locking member 31 is slidably connected to the supporting frame 21 through the lateral sliding slot 211, and the locking member 31 can slide relative to the lateral sliding slot 211 and is clamped to the corresponding fastening member 32, so that the mold assembly 1 is locked at least along the height direction of the mold cavity.

Specifically, after the mold assembly 1 is placed on the support frame 21, the fastening member 32 is located on the opening side of the locking groove of the locking member 31, and the fastening member 32 is clamped into the locking groove by sliding the locking member 31, so that the mold assembly 1 is locked at least along the height direction of the mold cavity 13. Set up like this and make when drawing of patterns after the precast pile shaping, can prevent that mould subassembly 1 from along with the precast pile rebound, be favorable to the precast pile to go out the mould smoothly to be favorable to preventing that precast pile stake shape from damaging. In addition, compared with the first embodiment, in the first embodiment, the mold assembly 1 is placed on the support frame and then only needs to slide the locking member, so that the fastening member is clamped into the clamping groove of the locking member to realize locking of the fastening member and the locking member, and the mold assembly does not need to be moved, thereby reducing labor force and saving manpower resources to a certain extent.

When precast piles with different sizes and pile shapes need to be formed, the buckling piece 32 is loosened only by sliding the locking piece 31, so that the mould assembly 1 and the mould base assembly 2 are unlocked, then the mould assembly is lifted away from the mould base assembly, and the mould assembly meeting the requirements is replaced; certainly, the die base assembly can be simultaneously assembled with two groups of different die assemblies, so that precast piles in different sizes and pile shapes can be simultaneously formed to meet the requirements of building production.

< example four >

In the present embodiment, the same portions as those in the first embodiment are given the same reference numerals, and the same description is omitted.

The main differences between the present embodiment and the first, second, and third embodiments are: referring to fig. 11, the mold base assembly 2 further includes a jacking mechanism 23, the jacking mechanism 23 is disposed along the width direction of the mold cavity 13 at intervals, the jacking mechanism 23 corresponds to the position of the mold cavity, that is, any formed precast pile at least corresponds to one jacking mechanism, wherein the jacking mechanism 23 is disposed along the length direction of the same mold cavity at even intervals, and the bottom mold plate of the mold unit has a through hole for the jacking mechanism 23 to pass through. Like this when the precast pile shaping drawing of patterns, climbing mechanism 23 can apply ascending thrust to the precast pile to exert decurrent reaction force to mould base subassembly 2, be favorable to the smooth drawing of patterns of precast pile like this, in addition, owing to set up fastening component 3 with 1 detachable locking of mould subassembly in mould base subassembly 2, when climbing mechanism 23 applys the thrust drawing of patterns to the precast pile, mould subassembly can not follow the precast pile rebound, be favorable to the smooth drawing of patterns of precast pile, thereby be favorable to preventing that the precast pile shape from damaging.

When precast piles with different sizes and pile shapes are required to be formed, the mould assembly 1 and the mould base assembly 2 are unlocked, then the mould assembly is lifted away from the mould base assembly, and the mould assembly meeting the requirement is replaced; certainly, the die base assembly can be simultaneously assembled with two groups of different die assemblies, so that precast piles in different sizes and pile shapes can be simultaneously formed to meet the requirements of building production.

The technical principles of the present invention have been described above with reference to specific embodiments, but it should be noted that the above descriptions are only for explaining the principles of the present invention, and should not be interpreted as specifically limiting the scope of the present invention in any way. Based on the explanation here, those skilled in the art can conceive of other embodiments of the present invention or equivalent alternatives without creative efforts, and will fall into the protection scope of the present invention.

Claims (11)

1. A precast pile die set, comprising: the mould comprises at least one mould assembly with at least two mould cavities and a mould base assembly which is fixedly arranged on a hard bearing surface; the mould assembly is detachably locked on the mould base assembly through the fastening assembly, and the fastening assembly at least can limit the mould assembly to move towards the direction far away from the hard bearing surface when the precast pile is demoulded.

2. A precast pile mould set according to claim 1, characterised in that the mould assembly comprises a mould unit and a spacer bearing the mould unit, the mould unit being mounted and fixed with the spacer; the spacing support is provided with a supporting rod matched with the outline of the die unit and transverse supporting rods uniformly distributed at intervals along the length direction of the die cavity; the mould base assembly comprises support frames which are uniformly arranged along the length direction of the mould cavity at intervals; the separation support of the mould component is detachably connected with the support frame.

3. A precast pile die set as recited in claim 2, wherein the fastening assembly comprises: the mould base assembly comprises a plurality of buckling pieces and a plurality of locking pieces, wherein the buckling pieces are arranged on one of the spacing support and the mould base assembly at intervals;

the retaining member has the draw-in groove that supplies to detain the even joint, detains even and retaining member assembled connection back, and the mould subassembly is fixed in mould base subassembly.

4. A precast pile die set according to claim 3, wherein the locking member has a substantially U-shaped slot, and a plurality of slots at least for locking the same die assembly have substantially the same opening direction; the buckling piece is clamped with the corresponding clamping groove, so that the mold assembly can be locked at least along the height direction of the mold cavity.

5. A precast pile die set according to claim 3, characterized in that the locking member comprises: the clamping device comprises at least two clamping blocks and a driving mechanism which is connected with the clamping blocks and drives the clamping blocks to move; the driving mechanism can drive the clamping blocks to move, the buckle connecting piece is fixedly embraced between the clamping blocks, and the mold assembly is fixed through locking.

6. The precast pile die set according to claim 3, wherein a transverse sliding groove is formed in a side wall of the support frame, and the locking member is slidably connected with the support frame through the transverse sliding groove; the retaining member can slide relative to the transverse sliding groove and is clamped with the corresponding buckling member, so that the mold assembly is at least locked along the height direction of the mold cavity.

7. A precast pile die set according to any one of claims 4 to 6, characterized in that the die base assembly further comprises jacking mechanisms which are arranged at intervals in the width direction of the die cavity, and the bottom die plate of the die unit is provided with through holes through which the jacking mechanisms pass.

8. A precast pile die set according to any one of claims 3 to 6, wherein the fastening assembly further comprises an upper pulling plate, a first nut and a second nut, the upper pulling plate is provided with a mounting hole for the fastening piece to pass through, and the fastening piece is mounted and fixed on the die assembly spacer through the upper pulling plate;

the buckling connecting piece is provided with a middle part clamped in the clamping groove, one end of the buckling connecting piece extends into the mounting hole and is fixedly mounted with the upper pulling plate, and the other end of the buckling connecting piece forms a clamping head for limiting the buckling connecting piece to be separated; the first nut, the second nut and one end of the buckle connecting piece extending into the mounting hole are in threaded connection, and the first nut and the second nut are respectively located on two sides of the upper pulling plate.

9. The precast pile die set according to claim 2, wherein the die unit comprises at least two strip dies arranged in sequence along the width direction of the die cavity, the strip dies are U-shaped dies with an upper opening structure, and two adjacent strip dies can be connected and fixed;

or the mould unit comprises at least two strip-shaped moulds which are sequentially arranged along the width direction of the mould cavity, and the two adjacent strip-shaped moulds share the same side mould plate.

10. The precast pile mold group according to claim 1, further comprising a steam pipeline arranged along the circumferential direction and/or the length direction of the mold assembly, and heat insulation cotton and a water-stop plate laid at the bottom of the mold assembly.

11. A precast pile die set according to claim 10, wherein the steam pipe is arranged at an inner side wall of the die base assembly and lower than the bottom form of the die unit.

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