One-die multi-pile separation device for prestressed pile die

Abstract

The utility model discloses a one-mould multi-pile separating device of a prestressed pile mould, which comprises a left flange plate, a right flange plate and a clamping component, the left flange plate and the right flange plate comprise flange plate bodies, connecting bosses and central through holes, and the central through holes simultaneously penetrate through the flange plate bodies and the connecting bosses; the reinforcement cage is connected with the flange plate through the flange body; the flange plates on the two sides are coaxially and detachably connected and installed in the pipe die through clamping assemblies. Sealing parts are arranged on the connecting end faces of the connecting bosses on the two sides. The separating device has the advantages that concrete slurry can be prevented from leaking into the separating device and the pipe die from the connecting end face of the connecting boss, and demolding of the prestressed pile and dismantling of the left flange plate and the right flange plate are not affected; the prestressed pile can be directly hoisted out of the lower pipe die, so that the production efficiency is improved; the structure that the upper clamping sleeve and the lower clamping sleeve are connected up and down is simple, assembling and disassembling are convenient, and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to a supporting auxiliary device for a production mold of prestressed piles, in particular to a separating device for producing multiple piles with one mold of a prestressed pile mold, belonging to the technical field of concrete component production. Background Art

[0002] Molds are essential in the production process of prestressed piles. The size of the mold is generally fixed, but the length size of the pile is customized according to customer needs. The length size of the pipe mold is generally about 15 meters. When producing short piles with a long pipe mold, in order to improve production efficiency and reduce production waste, multiple piles are usually produced simultaneously with one mold.

[0003] When realizing the production of multiple piles at one time with one mold, in order to meet the requirements of the prestressed pile production process, each steel reinforcement cage needs to be connected.

[0004] The current process is to connect between the end plates at the ends of two adjacent steel reinforcement cages through a pile connector, and then perform tensioning, pumping of materials, centrifugation, and steam curing until demolding. The existing pile connector consists of two half clamps, and connecting plates are connected to the end plates of the two adjacent piles to be connected. The connecting plates are clamped in the half clamps to realize the connection of two adjacent steel reinforcement cages. In actual production, the following problems will occur: after tensioning, the half clamps shift, and during centrifugation, the concrete slurry will leak out from the pile connector and adhere to the pipe mold. After demolding, it is difficult to clean the mold, which affects production efficiency. If the mold is not cleaned thoroughly, it will also affect the quality of the next production. On the other hand, when demolding short piles produced with a long mold, after the upper mold is lifted, there are multiple piles in the lower mold, and there is no place to hook the hook on the side with the pile connector. It is necessary to first turn the lower mold by 90°, pour out the piles, then remove this pile connector, and hook the hook into the holes of the piles for lifting. Therefore, the demolding and disassembly process is complex and affects production efficiency. Summary of the Invention

[0005] Object of the Invention: The object of the utility model is to provide a separating device for producing multiple piles with one mold of a prestressed pile mold aiming at the problems existing in the prior art. The utility model realizes the production of multiple piles at one time with one mold by installing a separating device in the existing tubular mold, and can prevent the concrete slurry from leaking out and adhering to the inside of the separating device and the pipe mold; at the same time, it is convenient to lift the piles out of the pipe mold, thereby facilitating demolding.

[0006] Technical Solution: A separating device for producing multiple piles with one mold of a prestressed pile mold includes a left flange, a right flange, and a clamping assembly.

[0007] The left flange includes a left flange body, a left connecting boss protruding to the right, and a left central through hole. The left central through hole penetrates both the left flange body and the left connecting boss; the steel reinforcement cage on the left side is connected to the left flange through the left flange body.

[0008] The right flange includes a right flange body, a right connecting boss protruding to the left, and a right central through-hole that penetrates both the right flange body and the right connecting boss; the steel reinforcement cage on the right side is connected to the right flange through the right flange body;

[0009] The left flange and the right flange are coaxially detachably connected through a clamping component and installed in the pipe mold;

[0010] A sealing part is provided on the connecting end faces of the left connecting boss and the right connecting boss.

[0011] In the utility model, the left and right flanges are respectively connected to the steel reinforcement cages on their two sides, and then the left and right flanges are axially connected into a coaxial integral structure through the clamping component. The sealing part provided on the connecting end faces of the left connecting boss and the right connecting boss can prevent the concrete slurry from leaking from the connecting end faces of the left connecting boss and the right connecting boss into the inside of the separating device and the pipe mold, affecting the demolding of the prestressed pile and the removal of the left and right flanges.

[0012] Preferably, in order to achieve the blocking effect, the sealing part includes a sealing boss and a sealing counterbore. When the end faces of the left connecting boss and the right connecting boss are in contact, the sealing boss is inserted into the sealing counterbore.

[0013] If the end face of the left connecting boss is the sealing boss, then the end face of the right connecting boss opposite to it is the sealing counterbore; conversely, if the end face of the left connecting boss is the sealing counterbore, then the end face of the right connecting boss opposite to it is the sealing boss; when the opposite left connecting boss and right connecting boss are spliced, a staggered seal is formed through the cooperation of the sealing boss and the sealing counterbore, eliminating the gap at the connection of the left and right connecting bosses, thereby blocking the communication between the left and right central through-holes and the outside and preventing the leakage of the concrete slurry.

[0014] Preferably, in order to facilitate lifting the prestressed pile out of the pipe mold, the left flange body and the right flange body have the same structural dimensions; the left flange body is provided with a lifting hole penetrating the disk surface, and the number of the lifting holes is at least two, which are evenly distributed on the annular disk surface of the left flange body. After removing the upper pipe mold, removing the clamping component, directly clamping one hook of the lifting equipment in the inner hole of the prestressed pile all the time, and directly passing the other hook through the lifting hole of the left flange to lift out one pile; then use the same method to lift out the other pile, improving the production efficiency. Having more than two lifting holes can ensure that at least one lifting hole can be used after opening the upper pipe mold.

[0015] Preferably, in order to facilitate the pump pipe to pass smoothly through the connection of the two flanges and prevent the pump pipe from getting stuck at the flange connection, a chamfer is provided at one end of the left central through-hole close to the left flange body, and a chamfer is also provided at one end of the right central through-hole close to the right flange body.

[0016] Preferably, in order to facilitate the separation of two prestressed piles during demolding, both the left central through-hole and the right central through-hole are conical through-holes with a larger diameter on one side of the flange body than on one side of the connecting boss. During the production process of the prestressed pile, under the action of the centrifugal force generated by the centrifuge, the filled concrete slurry will be densely distributed on the inner wall of the pipe mold and fill and cover the entire steel reinforcement cage. Due to the conical through-hole structure, the slurry at the connection of the two prestressed piles will also be filled into the interior of the prestressed pile body respectively. Even if there is a small amount of slurry remaining at the connection, an obvious interface will be formed, and the two prestressed piles can be smoothly separated during demolding.

[0017] Preferably, in order to achieve the quick and convenient connection of the left and right flanges and meet the requirements of the tensioning process in the production process, the clamping assembly includes an upper clamping sleeve and a lower clamping sleeve. The upper clamping sleeve and the lower clamping sleeve have the same structure. The upper clamping sleeve and the lower clamping sleeve are combined to form a complete sleeve structure, and the outer diameter of the sleeve matches the inner diameter of the pipe mold.

[0018] Both ends of the upper clamping sleeve and the lower clamping sleeve are respectively provided with annular limiting flanges extending towards the inner diameter.

[0019] The outer diameters of the left flange body and the right flange body are respectively provided with annular limiting protrusions. When the left flange and the right flange are spliced, the annular limiting protrusions at both ends are located inside the annular limiting flanges on both sides.

[0020] During the production process, first place the lower clamping sleeve in the lower pipe mold, and then place the left and right flanges connected to the steel reinforcement cage into the lower clamping sleeve. At this time, the annular limiting protrusions of the left and right flanges on both sides are located inside the annular limiting flanges on both sides of the lower clamping sleeve, playing a role of limiting connection; then install the upper clamping sleeve to form a complete clamping sleeve structure, and finally install and fix the upper pipe mold to complete the mold closing. After the mold is closed, a tensioning process needs to be carried out. The cooperation between the annular limiting protrusions and the annular limiting flanges can meet the requirements of the tension force transmission of each steel reinforcement cage during the tensioning process. The structure of the upper clamping sleeve and the lower clamping sleeve joined up and down is simple, convenient for assembly and disassembly, and can improve production efficiency.

[0021] Preferably, in order to facilitate the removal of the upper clamping sleeve during demolding, a removal hole is provided on the barrel wall of the upper clamping sleeve. When removing the upper clamping sleeve, only need to insert a crowbar into the removal hole and pry the crowbar to easily remove the upper clamping sleeve.

[0022] Preferred option. To improve the reliability of the connection between the two side steel reinforcement cages, the inner side of the barrel wall of the upper clamping sleeve is provided with inwardly protruding ribs. After the connection is completed, the left flange and the right flange form two clamping grooves with the ribs. The two side steel reinforcement cages are connected to the left flange and the right flange through bolts. After the connection is completed, the left flange and the right flange are respectively placed in the upper clamping sleeve and the lower clamping sleeve. At this time, the bolt heads are located in the clamping grooves, and the width of the clamping grooves can limit the loosening of the bolts, thereby improving the reliability of the connection between the two side steel reinforcement cages.

[0023] A method for manufacturing multiple piles in one mold of a prestressed pile mold includes the following steps:

[0024] Step 1: Manufacture the steel reinforcement cage;

[0025] Step 2: Connect the flanges. Connect the flange plates to the end parts of two adjacent steel reinforcement cages respectively. The left steel reinforcement cage is connected to the left flange through the left flange body; the right steel reinforcement cage is connected to the right flange through the right flange body.

[0026] Step 3: Assemble the separating device. Place the lower clamping sleeve in the lower pipe mold, and then place the left and right flange plates connected to the steel reinforcement cage into the lower clamping sleeve. The annular limiting protrusion parts of the left and right flange plates on both sides are located inside the annular limiting flange parts on both sides of the lower clamping sleeve. Then install the upper clamping sleeve, and the left flange and the right flange form a coaxial integral structure through the clamping component;

[0027] Step 4: Close the mold. After installing all the upper clamping sleeves, cover the upper pipe mold and fix the upper and lower pipe molds to complete the closing of the mold;

[0028] Step 5: Tension. Use the tensioning equipment to pull the steel reinforcement cage at the head. The tension force is transmitted to each steel bar cage through the cooperation of the annular limiting protrusion part and the annular limiting flange between the steel reinforcement cages;

[0029] Step 6: Place the material. After completing the tensioning process, insert the concrete slurry pump pipe from one side of the steel reinforcement cage to the end of the other side of the steel reinforcement cage. When placing the material, the pipe mold retreats while the pump pipe injects the slurry. Calculate the retreat speed of the pipe mold according to the demand of the slurry for each section of the pile and the flow rate of the pump;

[0030] Step 7: Centrifugal molding. Place the pile mold with the material after tensioning on the centrifuge for centrifugal molding;

[0031] Step 8: Steam curing. Place the pile mold with the material after centrifugal molding into the steam curing pool for steam curing;

[0032] Step 9: Demold. After steam curing, remove the mold. First, remove the mold closing bolts, lift the upper pipe mold, then remove the upper clamping sleeves respectively. Finally, lift each individual short pile respectively.

[0033] Preferred option: To facilitate the removal of the upper clamping sleeve during demolding, the method for removing the upper clamping sleeve in step nine is as follows: A disassembly hole is provided on the wall of the upper clamping sleeve. When removing the upper clamping sleeve, insert a crowbar into the disassembly hole and pry the crowbar to remove the upper clamping sleeve. This improves the demolding efficiency.

[0034] Preferred option: To further improve production efficiency, the method for lifting a single prestressed pile in step nine is as follows: Hang one hook of the lifting equipment in the inner hole of the pile without a flange, and pass the other hook of the lifting equipment through the lifting hole of the left flange body or the right flange body at the end of the same prestressed pile; or directly pass the hook of the lifting equipment through the lifting holes of the left flange body and the right flange body at both ends of the same prestressed pile, and the prestressed pile can be directly lifted out of the lower pipe mold.

[0035] Taking the example of producing two short piles with one long mold, remove the tensioning baffle, tensioning tail plate, and upper mold. Pass one hook of the lifting equipment through the inner wall of the pile near the end of the pipe mold, and the other hook through the flange body at the end of the prestressed pile for lifting. Then, use the same method to lift the other pile again. In the prior art, after demolding, one end of the connecting clip cannot be lifted. Now, it is necessary to turn the pile away from the lower mold and then lift it. With the present application, it can be directly lifted, improving production efficiency.

[0036] Beneficial effects: In the present utility model, the left and right flange plates are respectively connected to the steel reinforcement cages on both sides of them, and then the left and right flanges are axially connected into a coaxial integral structure through the clamping assembly. The sealing part is arranged on the connecting end faces of the left connecting boss and the right connecting boss, which can prevent the concrete slurry from leaking from the connecting end faces of the left connecting boss and the right connecting boss into the inside of the separating device and the pipe mold, affecting the demolding of the prestressed pile and the removal of the left and right flange plates. After removing the upper pipe mold, remove the clamping assembly, and directly pass the hook of the lifting equipment through the lifting holes at both ends of the prestressed pile, and the prestressed pile can be directly lifted out of the lower pipe mold, improving production efficiency. Having more than two lifting holes can ensure that at least one lifting hole can be used after opening the upper pipe mold. The structure of the upper clamping sleeve and the lower clamping sleeve being joined up and down is simple, facilitating assembly and disassembly, and can improve production efficiency. Description of the Drawings

[0037] To more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0038] Figure 1 It is the assembly schematic diagram of the present utility model;

[0039] Figure 2 Cross-sectional view of the first embodiment of the present utility model;

[0040] Figure 3 Three-dimensional cross-sectional view of the first embodiment of the present utility model;

[0041] Figure 4 Three-dimensional view of the appearance of the first embodiment of the present utility model;

[0042] Figure 5 Three-dimensional structural schematic diagram of the left flange of the first embodiment of the present utility model;

[0043] Figure 6 Three-dimensional structural schematic diagram of the right flange of the first embodiment of the present utility model;

[0044] Figure 7 Cross-sectional view of the clamping assembly of the present utility model;

[0045] Figure 8 Cross-sectional view of the state where the left and right flanges of the second embodiment of the present utility model are spliced;

[0046] Figure 9 Cross-sectional view of the left flange of the second embodiment of the present utility model;

[0047] Figure 10 Cross-sectional view of the right flange of the second embodiment of the present utility model. Specific embodiments

[0048] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0049] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0050] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on the top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature. Embodiment 1

[0051] As Figure 1 -7 shows, a partition device for multiple piles in one die of a prestressed pile mold, which is characterized in that: it includes a left flange 1, a right flange 2 and a clamping component 3.

[0052] The left flange 1 includes a left flange body 11, a left connecting boss 12 protruding to the right and a left central through hole 13, and the left central through hole 13 penetrates through the left flange body 11 and the left connecting boss 12 at the same time; the left steel reinforcement cage 4 is connected to the left flange 1 through the left flange body 11.

[0053] The right flange 2 includes a right flange body 21, a right connecting boss 22 protruding to the left and a right central through hole 23, and the right central through hole 23 penetrates through the right flange body 21 and the right connecting boss 22 at the same time; the right steel reinforcement cage 4 is connected to the right flange 2 through the right flange body 21.

[0054] The left flange 1 and the right flange 2 are coaxially detachably connected through the clamping component 3 and installed in the pipe mold 5.

[0055] A sealing part 6 is arranged on the connecting end faces of the left connecting boss 12 and the right connecting boss 22.

[0056] In the present utility model, the left and right flanges are respectively connected to the steel reinforcement cages 4 on both sides of them, and then the left and right flanges are axially connected into a coaxial integral structure through the clamping component 3. The sealing part 6 arranged on the connecting end faces of the left connecting boss 12 and the right connecting boss 22 can prevent the concrete slurry from leaking from the connecting end faces of the left connecting boss 12 and the right connecting boss 22 into the interior of the partition device and onto the pipe mold 5, which affects the demolding of the prestressed pile and the removal of the left and right flanges.

[0057] As Figure 5 And 6 Shown in, in order to achieve the blocking effect, the sealing part 6 includes a sealing boss 61 and a sealing sink 62, and when the end faces of the left connecting boss 12 and the right connecting boss 22 are in contact, the sealing boss 61 is inserted into the sealing sink 62.

[0058] When the end face of the left connecting boss 12 is the sealing boss 61, the end face of the right connecting boss 22 opposite to it is the sealing counterbore 62; conversely, when the end face of the left connecting boss 12 is the sealing counterbore 62, the end face of the right connecting boss 22 opposite to it is the sealing boss 61; when the opposite left connecting boss 12 and right connecting boss 22 are spliced, a dislocation seal is formed through the cooperation of the sealing boss 61 and the sealing counterbore 62, eliminating the gap at the joint of the left and right connecting bosses, thereby blocking the communication between the left and right central through holes and the outside, and avoiding the leakage of concrete slurry.

[0059] As Figure 4 , 5 As shown in 6, in order to facilitate the lifting of the prestressed pile from the pipe mold 5, the left flange body 11 and the right flange body 21 have the same structural dimensions;

[0060] The left flange body 11 is provided with a hoisting hole 14 penetrating the disk surface, and the number of the hoisting holes 14 is at least two, which are evenly distributed on the annular disk surface of the left flange body 11.

[0061] After removing the upper pipe mold, remove the clamping assembly 3, directly clamp one hook of the lifting equipment in the inner hole of the prestressed pile all the time, and directly pass the other hook through the hoisting hole 14 of the left flange 1 to lift out one pile; then lift out the other pile in the same way, improving the production efficiency. Having more than two hoisting holes 14 can ensure that at least one hoisting hole 14 can be used after opening the upper pipe mold.

[0062] As Figure 2 As shown in, in order to facilitate the pump pipe to pass smoothly through the connection of the two flanges and prevent the pump pipe from getting stuck at the flange connection, the end of the left central through hole 13 close to the left flange body 11 is provided with a chamfer, and the end of the right central through hole 23 close to the right flange body 21 is also provided with a chamfer.

[0063] As Figure 7 As shown, in order to realize the quick and convenient connection of the left and right flanges and meet the requirements of the tensioning process in the production process, the clamping assembly 3 includes an upper clamping sleeve 31 and a lower clamping sleeve 32. The upper clamping sleeve 31 and the lower clamping sleeve 32 have the same structure. The upper clamping sleeve 31 and the lower clamping sleeve 32 are combined to form a complete sleeve structure, and the outer diameter of the sleeve matches the inner diameter of the pipe mold 5;

[0064] Both ends of the upper clamping sleeve 31 and the lower clamping sleeve 32 are provided with annular limiting flanges 33 extending towards the inner diameter;

[0065] The outer diameters of the left flange body 11 and the right flange body 21 are respectively provided with annular limiting protrusion parts 34. When the left flange 1 and the right flange 2 are spliced, the annular limiting protrusion parts 34 at both ends are located inside the annular limiting flanges 33 on both sides.

[0066] During the production process, first place the lower clamping sleeve 32 in the lower pipe mold, and then place the left and right flange plates connected to the steel reinforcement cage 4 into the lower clamping sleeve 32. At this time, the annular limiting protrusions 34 of the left flange plate 1 and the right flange plate 2 on both sides are located inside the annular limiting flanges 33 on both sides of the lower clamping sleeve, playing a role of limiting connection; then install the upper clamping sleeve 31 to form a complete clamping sleeve structure, and finally install and fix the upper pipe mold to complete the mold closing. After the mold closing, a tensioning process needs to be carried out. The cooperation between the annular limiting protrusion 34 and the annular limiting flange 33 can meet the requirements of the tension force transmission of each steel bar cage during the tensioning process. The structure of the upper clamping sleeve 31 and the lower clamping sleeve 32 joined up and down is simple, which is convenient for assembly and disassembly, and can improve production efficiency.

[0067] As Figure 3 and 4 shown, in order to facilitate the removal of the upper clamping sleeve 31 during demolding, a disassembly hole 35 is provided on the barrel wall of the upper clamping sleeve 31. When removing the upper clamping sleeve 31, only need to insert a crowbar into the disassembly hole 35 and pry the crowbar to easily remove the upper clamping sleeve 31.

[0068] As Figure 3 shown, in order to improve the connection reliability of the two steel reinforcement cages 4 on both sides, an inwardly protruding rib 36 is provided on the inner side of the barrel wall of the upper clamping sleeve 31. After the connection is completed, the left flange plate 1 and the right flange plate 2 form two clamping grooves with the rib 36.

[0069] The two steel reinforcement cages 4 on both sides are connected to the left flange plate 1 and the right flange plate 2 through bolts; after the connection is completed, the left flange plate 1 and the right flange plate 2 are respectively placed in the upper clamping sleeve 31 and the lower clamping sleeve 32. At this time, the bolt heads are located in the clamping grooves, and the width of the clamping grooves can limit the loosening of the bolts, thereby improving the connection reliability of the two steel reinforcement cages 4 on both sides. Embodiment 2

[0070] As Figure 8 、 9 and 10 shown, in order to facilitate the separation of the two prestressed piles during demolding, both the left central through hole 13 and the right central through hole 23 are conical through holes with a diameter larger on one side of the flange plate body than on one side of the connecting boss.

[0071] During the production process of the prestressed pile, under the action of the centrifugal force generated by the centrifuge, the filled concrete slurry will be densely distributed on the inner wall of the pipe mold 5 and fill and cover the entire steel reinforcement cage 4. Due to the conical through hole structure, the slurry at the connection of the two prestressed piles will also be filled into the prestressed pile body respectively. Even if there is a small amount of slurry left at the connection, an obvious interface will be formed, and the two prestressed piles can be smoothly separated during demolding.

[0072] A method for manufacturing multiple piles with one mold for a prestressed pile mold, characterized by comprising the following steps:

[0073] Step 1: Fabricate the steel reinforcement cage. Customize the steel reinforcement cage according to the customer's requirements, and calculate the quantity and position of the steel reinforcement cage arranged in the pipe mold.

[0074] Step 2: Connect the flanges. Connect the flange plates to the end parts of two adjacent steel reinforcement cages respectively. The left steel reinforcement cage is connected to the left flange through the left flange plate body; the right steel reinforcement cage is connected to the right flange through the right flange plate body.

[0075] Step 3: Assemble the separating device. Place the lower clamping sleeve in the lower pipe mold, and then put the left and right flanges connected to the steel reinforcement cage into the lower clamping sleeve. The annular limiting protrusion parts of the left and right flanges on both sides are located inside the annular limiting flange parts on both sides of the lower clamping sleeve. Then install the upper clamping sleeve. The left and right flanges form a coaxial integrated structure through the clamping components.

[0076] Step 4: Close the mold. After installing all the upper clamping sleeves, cover the upper pipe mold and fix the upper and lower pipe molds to complete closing the mold.

[0077] Step 5: Tension. Use the tensioning equipment to pull the steel reinforcement cage at the head. The tension force is transmitted to each steel disc cage through the cooperation of the annular limiting protrusion part and the annular limiting flange between the steel reinforcement cages.

[0078] Step 6: Place the concrete. After completing the tensioning process, insert the concrete slurry pump pipe from one side of the steel reinforcement cage to the end of the other side of the steel reinforcement cage. When placing the concrete, the pipe mold retreats while the pump pipe injects the slurry. Calculate the pipe mold retreat speed according to the demand of the slurry for each pile section and the flow rate of the pump.

[0079] Step 7: Centrifugal molding. Place the pile mold with the placed material after tensioning on the centrifuge for centrifugal molding.

[0080] Step 8: Steam curing. Place the pile mold with the placed material after centrifugal molding into the steam curing pond for steam curing.

[0081] Step 9: Demold. After steam curing, remove the mold. First, remove the mold closing bolts and lift the upper pipe mold. Then, remove the upper clamping sleeves respectively. Finally, lift each individual short pile respectively.

[0082] Method for removing the upper clamping sleeve: The barrel wall of the upper clamping sleeve is provided with a disassembly hole. When removing the upper clamping sleeve, insert a crowbar into the disassembly hole and pry the crowbar to remove the upper clamping sleeve.

[0083] Method for lifting an individual prestressed pile: Hang one hook of the lifting equipment in the inner hole of the pile without a flange plate, and pass the other hook of the lifting equipment through the lifting hole of the left flange plate body or the right flange plate body at the end of the same prestressed pile; or directly pass the hook of the lifting equipment through the lifting holes of the left flange plate body and the right flange plate body at both ends of the same prestressed pile, and the prestressed pile can be directly lifted out of the lower pipe mold.

[0084] Taking the example of producing two short piles with a long die, remove the tensioning baffle, tensioning tail plate, and upper die. Pass one hook of the lifting equipment through the inner wall of the pile near the end of the pipe die, and pass the other hook through the flange body of the prestressed pile end for lifting. Then, use the same method to lift the other pile again. In the prior art, after demolding, since one end of the connecting clamp cannot be lifted, the pile needs to be flipped away from the lower die before lifting. With the present application, lifting can be directly carried out, improving production efficiency.

[0085] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same and similar parts among the various embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method section.

[0086] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A prestressed pile mold with multiple piles in one mold, characterized by: It comprises a left flange (1), a right flange (2) and a clamping assembly (3). The left flange (1) comprises a left flange body (11), a left connecting boss (12) protruding to the right, and a left central through hole (13), wherein the left central through hole (13) penetrates both the left flange body (11) and the left connecting boss (12); the left steel cage (4) is connected to the left flange (1) via the left flange body (11); The right flange (2) comprises a right flange body (21), a right connecting boss (22) protruding to the left, and a right central through hole (23), wherein the right central through hole (23) penetrates both the right flange body (21) and the right connecting boss (22); the steel cage (4) on the right side is connected to the right flange (2) via the right flange body (21); The left flange (1) and the right flange (2) are coaxially detachably connected via a clamping assembly (3) and installed in the pipe mold (5); The connecting end surfaces of the left connecting boss (12) and the right connecting boss (22) are provided with a sealing portion (6).

2. The prestressed pile mold one mold multiple pile separation device according to claim 1, characterized in that: The sealing portion (6) comprises a sealing boss (61) and a sealing countersunk hole (62); when the end faces of the left connecting boss (12) and the right connecting boss (22) are in contact, the sealing boss (61) is inserted into the sealing countersunk hole (62).

3. The prestressed pile mold one mold multiple pile separation device according to claim 1 or 2, characterized in that: The left flange body (11) and the right flange body (21) have the same structural dimensions; The left flange body (11) is provided with a lifting hole (14) penetrating the disk surface, and the lifting holes (14) are at least two in number and are evenly distributed on the annular disk surface of the left flange body (11).

4. The prestressed pile mold one mold multiple pile separation device according to claim 3, characterized in that: An end of the left central through hole (13) close to the left flange body (11) is provided with a chamfer, and an end of the right central through hole (23) close to the right flange body (21) is also provided with a chamfer.

5. The prestressed pile mold one mold multiple pile separation device according to claim 1, characterized in that: The left central through hole (13) and the right central through hole (23) are both conical through holes with a diameter on one side of the flange body being larger than a diameter on one side of the connecting boss.

6. The prestressed pile mold one-mold multiple-piles separation device according to claim 1, characterized in that: The clamping assembly (3) comprises an upper clamping sleeve (31) and a lower clamping sleeve (32); the upper clamping sleeve (31) and the lower clamping sleeve (32) have the same structure; the upper clamping sleeve (31) and the lower clamping sleeve (32) are combined to form a complete sleeve structure; the outer diameter of the sleeve matches the inner diameter of the pipe mold (5); Both ends of the upper clamping sleeve (31) and the lower clamping sleeve (32) are respectively provided with an annular limiting flange (33) extending toward the inner diameter; The outer diameters of the left flange body (11) and the right flange body (21) are respectively provided with annular limiting protrusions (34); when the left flange (1) and the right flange (2) are spliced, the annular limiting protrusions (34) at both ends are located inside the annular limiting flanges (33) on both sides.

7. The separation device for a prestressed pile mold with multiple piles according to claim 6, characterized in that: A disassembly hole (35) is provided on the wall of the upper clamping sleeve (31).

8. The prestressed pile mold one mold multiple pile separation device according to claim 6, characterized in that: The inner side of the wall of the upper clamping sleeve (31) is provided with a convex rib (36) protruding inwardly, and after the connection is completed, the left flange (1) and the right flange (2) and the convex rib (36) form two clamping grooves.

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