CN215202630U

CN215202630U - Precast pile production facility

Info

Publication number: CN215202630U
Application number: CN202022714760.2U
Authority: CN
Inventors: 周兆弟
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-12-17
Anticipated expiration: 2030-11-20

Abstract

The utility model discloses a precast pile production facility, keep off piece and connector including mould, stretch-draw, wherein: the die is at least provided with a molding die cavity for accommodating the piece to be stretched along the length direction of the die; the two tensioning stoppers are respectively positioned at two ends of the die and play a role in tensioning and supporting; the connector is used for connecting the part to be tensioned with the prestress tensioning equipment, the part to be tensioned with the tensioning stopper and the part to be tensioned with the part to be tensioned; the connector comprises a base, a movable wedge block and a control mechanism, wherein a fixed surface and a movable surface which have the same inclination angle and are at least partially attached to each other are respectively arranged on the base and the movable wedge block, the control mechanism can adjust the sliding range of the movable surface in the movable wedge block along the fixed surface of the base, and then the distance between the movable wedge block and the connector combined in the length direction of the mold is adjusted. The control mechanism is used for adjusting the sliding range of the moving surface in the movable wedge block along the fixed surface of the ground to keep tensioning and finish loosening, and the production efficiency of the precast pile is improved.

Description

Precast pile production facility

Technical Field

The utility model relates to a prefabricated component production field especially relates to a precast pile production facility.

Background

The prefabricated member refers to a steel, wood or concrete member which is previously manufactured in a factory or on the site according to design specifications, and the prefabricated pile is a representative product thereof. In the production process of the concrete precast pile, tensioning and releasing are two very important processes, wherein the tensioning is to generate stress on a part to be tensioned in advance so as to improve the rigidity of a component, and the releasing is to release residual prestress after the precast pile is produced so as to normally demold the precast pile.

When the existing precast pile is produced, an opening device is usually selected to be arranged outside a mould, the opening device is connected with a piece to be tensioned through a force transmission component and a connector, the force transmission component and the connector are in a tensioned state with the piece to be tensioned, and the force transmission component and the connector are required to be in a loose state with the piece to be tensioned when the opening device is opened. The force transmission assembly and the connector can deform and the like in the use process, so that the size difference exists between the force transmission assembly and/or the connector when the force transmission assembly and/or the connector are tensioned in place and put in place, and certain gaps exist among the force transmission assembly, the connector and a part to be tensioned; that is, when the tension releasing device reaches the maximum tension releasing stroke, the tension waiting member is not completely released and released in place.

In addition, if the maximum releasing stroke of the releasing device is increased independently, the labor intensity of workers is increased, and the releasing effect can not be ensured to meet the design requirements, such as: the tensioning piece to be arranged on a straight line is connected with the tensioning piece to be arranged through a connector, namely when two or more precast piles are produced through one-time tensioning, because the connector is only connected with the tensioning piece to be arranged, the tensioning piece to be arranged is bonded with concrete to form a precast pile, the effect of stress transmission of the precast pile is poor, after the tensioning piece is tensioned, the connector is still in a tensioned state with the tensioning piece to be connected with two ends of the connector, particularly for the concrete precast pile with variable cross section, when the tensioning piece is not fully tensioned, the large-diameter section of the precast pile is tightly bonded with a mould, so that the tensioning piece cannot be demoulded normally, and the production efficiency is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that the existing precast pile is not good in the placing and expanding effect and difficult to demould normally.

For realizing the purpose of the utility model, the utility model adopts the following technical scheme:

a precast pile production apparatus comprising a mold, a tension stop, and a connector, wherein:

the die is at least provided with a molding die cavity for accommodating the piece to be stretched along the length direction of the die;

the two tensioning stoppers are respectively positioned at two ends of the die and play a role in tensioning and supporting;

the connector is used for connecting the part to be tensioned with the prestress tensioning equipment, the part to be tensioned with the tensioning stopper and the part to be tensioned with the part to be tensioned;

the connector is characterized by comprising a base, a movable wedge block and a control mechanism, wherein a fixed surface and a movable surface which have consistent inclination angles and can be at least partially attached to each other are respectively arranged on the base and the movable wedge block, the control mechanism can adjust the sliding range of the movable surface in the movable wedge block along the fixed surface of the base, and further adjust the distance between the movable wedge block and the connector combined in the length direction of the mold.

Further, in the precast pile production equipment, the following characteristics are provided: the connector is connected with a part to be tensioned, prestress tensioning equipment or a tensioning stopper through a force transmission assembly, and the force transmission assembly comprises a tensioning rod; the connector comprises at least two clamping interfaces with mutually parallel axial leads, the clamping interfaces are used for being clamped with the tension rod, and the opening direction of at least one clamping interface is consistent with the demoulding direction of a piece to be tensioned in the mould;

preferably, the connector comprises two clamping interfaces, and the central axes of the two clamping interfaces are positioned on the same straight line.

Further, in the precast pile production equipment, the following characteristics are provided: the control mechanism in the connector comprises a fixing component and an adjusting component, wherein the fixing component comprises an upper pressure plate, and the upper pressure plate is connected with the base; the adjusting component comprises an adjusting screw rod, the adjusting screw rod is connected with the upper pressure plate, the other end of the adjusting screw rod abuts against the top surface of the movable wedge block or is in threaded connection with the top surface of the movable wedge block, and the movable wedge block is limited;

preferably, the adjusting assembly further comprises a lower pressing plate, the other end of the adjusting screw abuts against the lower pressing plate, and the lower pressing plate is in contact with the movable wedge block so as to limit the movable wedge block; the upper pressing plate and the lower pressing plate are both arranged perpendicular to the axis of the adjusting screw;

preferably, the adjusting screw is in threaded connection with the upper pressure plate and abuts against the top surface of the lower pressure plate;

preferably, the adjusting screw is in threaded connection with the upper pressure plate, the adjusting screw is clamped with the U-shaped hole of the lower pressure plate, and the adjusting screw can slide at least in the U-shaped hole of the lower pressure plate along the axial direction of the tension rod;

preferably, the adjusting screw is in threaded connection with the floating threaded sleeve, the floating threaded sleeve is provided with a skirt edge, and the floating threaded sleeve is clamped with the U-shaped hole in the upper pressure plate through the skirt edge; the floating screw sleeve can slide in the U-shaped hole of the upper pressure plate along the axial direction of the tension rod at least; the adjusting screw is abutted against the top surface of the lower pressing plate or clamped with the lower pressing plate;

preferably, the adjusting screw is provided with a skirt edge, the adjusting screw is clamped with a U-shaped hole in the upper pressure plate through the skirt edge, and the adjusting screw can slide in the U-shaped hole of the upper pressure plate at least along the axial direction of the tension rod; the adjusting screw is in threaded connection with the lower pressing plate.

Further, in the precast pile production equipment, the following characteristics are provided: the fixing component also comprises a stud which is connected with the base and the upper pressure plate so as to complete the connection of the fixing component and the base; the stud comprises a threaded section and a smooth section, and the upper pressure plate can slide in the smooth section of the stud at least through a through hole of the upper pressure plate;

preferably, the upper pressure plate also comprises a dismounting hole, the dismounting hole is communicated with the through hole, and at least the smooth section of the stud can pass through the part communicated with the through hole through the dismounting hole; the upper pressure plate can be separated from the stud through the self dismounting hole;

preferably, a guide assembly is arranged between the lower pressing plate and the movable wedge block, the guide assembly comprises a positioning pin, and the positioning pin is arranged between a mounting hole in the movable wedge block and a guide hole in the lower pressing plate;

preferably, the locating pin is interference fit with the mounting hole, and the locating pin is clearance fit with the guide hole.

Further, in the precast pile production equipment, the following characteristics are provided: the die is internally provided with at least one connector, the connector can divide the interior of the die into two die cavities which are distributed at intervals, and the die cavities are internally provided with at least one piece to be stretched;

preferably, the piece to be tensioned is a rigid framework or a stress rib.

Further, in the precast pile production equipment, the following characteristics are provided: the central axis of the die cavity is parallel to the central axis of the connector.

Further, in the precast pile production equipment, the following characteristics are provided: a sealing plate is arranged between the tension rod and the piece to be tensioned, and the sealing plate is at least partially attached to the inner surface of the die cavity; the precast pile production equipment further comprises a material distribution device, after tensioning is completed, the material distribution device injects concrete into the die cavity of the die, and the concrete does not overflow out of the die cavity under the blocking of the sealing plate.

Further, in the precast pile production equipment, the following characteristics are provided: the precast pile production equipment further comprises a locking piece, the locking piece is arranged on one side, far away from the die, of the tensioning blocking piece, and the locking piece can move along with or relative to the tensioning rod.

Further, in the precast pile production equipment, the following characteristics are provided: the locking piece adopts a tensioning nut.

Further, in the precast pile production equipment, the following characteristics are provided: a tension releasing device is arranged between at least one locking piece and the tension blocking piece.

The utility model provides a precast pile production facility has following beneficial effect: connecting the to-be-tensioned member and the to-be-tensioned member, the to-be-tensioned member and the prestress tensioning equipment or the to-be-tensioned member and the tensioning stopper through the connector, thereby completing the preparation process before tensioning in the precast pile production process; meanwhile, a base and a movable wedge block of the connector are respectively provided with a fixed surface and a movable surface which have consistent inclination angles and at least part of which can be mutually attached, and a control mechanism can adjust the sliding range of the movable surface in the movable wedge block along the fixed surface of the base, so that the distance between a piece to be tensioned and the connector in the length direction of the die is adjusted, namely the movable wedge block and the base can be kept in a relatively static state in the tensioning process; after tensioning is finished, the control mechanism can be released from blocking the movable wedge block, and the movable wedge block can move along the fixed surface of the base so as to adjust the distance of the combination of the part to be tensioned and the connector in the length direction of the die, so that a tensioning gap is generated; in addition, the stretching gap can be further increased by arranging the stretching device outside the stretching stopper, the stretching effect of the precast pile is improved, the precast pile is convenient to demould, and the production efficiency of the precast pile is further improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural view of a precast pile production apparatus;

FIG. 2 is a schematic view of the connector after being connected with the tension rod;

FIG. 3 is a cross-sectional view of FIG. 2;

FIG. 4 is a schematic view of another connector after being connected with a tension rod;

FIG. 5 is a schematic view of the structure of the base;

FIG. 6 is a schematic view of the movable wedge and the control mechanism;

FIG. 7 is a front view of FIG. 6;

FIG. 8 is a cross-sectional view A-A of FIG. 7;

FIG. 9 is a cross-sectional view B-B of FIG. 7;

FIG. 10 is a schematic structural view of the upper platen;

FIG. 11 is a schematic structural view of a control mechanism and a movable wedge according to a second embodiment;

FIG. 12 is a schematic view of an alternative control mechanism and movable wedge configuration;

FIG. 13 is a schematic view of a further control mechanism and movable wedge;

FIG. 14 is a schematic view of an alternative control mechanism and movable wedge configuration.

In the drawings:

01. stretching a pull rod; 02. a member to be tensioned; 03. stretching the stopper; 04. a connector; 05. a dilator is placed; 06. A mold; 07. pre-stress tensioning equipment; 08. tensioning the nut; 09. a sealing plate;

1. a base; 11. a card interface; 12. a fixed surface;

2. a movable wedge block; 21. moving the surface; 22. mounting holes;

3. a control mechanism;

31. a fixing assembly; 311. an upper pressure plate; 3111. a through hole; 3112. disassembling and assembling holes; 312. a stud; 313. A nut;

32. an adjustment assembly; 321. a lower pressing plate; 3211. a guide hole; 322. adjusting the screw rod; 3221. a skirt edge; 323. a floating screw sleeve; 324. a U-shaped hole;

33. a guide assembly; 331. and a positioning pin.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.

< example one >

As shown in fig. 1 to 3, 5 and 6, the utility model provides a precast pile production equipment, including mould 06, stretch-draw pedestal and connector 04, wherein: the die 06 is provided with at least one forming die cavity for accommodating the piece 02 to be tensioned along the length direction thereof; the tensioning pedestal comprises two tensioning stoppers 03 arranged at intervals, and the two tensioning stoppers 03 are respectively positioned at two ends of the die 06 and play a tensioning supporting role; the connector 04 is used for connecting the to-be-tensioned member 02 and the to-be-tensioned member 02, the to-be-tensioned member 02 and the prestress tensioning device 07 or the to-be-tensioned member 02 and the tensioning stopper 03. Further, the connector 04 comprises a base 1, a movable wedge 2 and a control mechanism 3, wherein the base 1 and the movable wedge 2 are respectively provided with a fixed surface 12 and a movable surface 21 which have consistent inclination angles and can be at least partially attached to each other, the control mechanism 3 can adjust the sliding range of the movable surface 21 in the movable wedge 2 along the fixed surface 12 of the base 1, and then the distance between the movable wedge 2 and the connector 04 along the length direction of the mold 06 is adjusted.

In particular, with continued reference to fig. 1-3, the connector 04 is connected to the member to be tensioned 02, the pre-stressed tensioning device 07 or the tensioned stop 03 via a force transfer assembly comprising a tensioning rod 01.

The tension rod 01 and one end connected with the piece 02 to be tensioned are of an integral or detachable structure. For example, a sealing plate 09 is provided between the tension rod 01 and the member 02 to be tensioned, the sealing plate 09 connects and fixes the tension rod 01 and the member 02 to be tensioned, and the sealing plate 09 is at least partially attached to the inner surface of the cavity of the mold 06, and when the prestress tension device 07 pulls the tension rod 01, the sealing plate 09 is pulled together. After tensioning is completed, the sealing plate 09 and the mold 06 form at least one cavity with an open upper surface, at the moment, the distributing device injects concrete into the mold cavity of the mold 06, the concrete does not overflow out of the mold cavity under the blocking of the sealing plate 09, and after the concrete is subjected to standing, condensing, steam curing and other processes, the precast pile is formed together with the member 02 to be tensioned.

When the tension rod 01 is connected with the prestress tension equipment 07, the tension rod 01 needs to penetrate through the tension stopper 03, and after tension is completed, the tension rod 01 is fixed on the tension stopper 03 through a tension nut 08 or other fasteners so as not to move; at this time, the prestress tensioning device 07 can move to the next station for tensioning.

When the tension rod 01 is connected with the tension stopper 03, the tension rod 01 penetrates through the tension stopper 03, and the tension rod 01 and the tension stopper 03 are fixed through a tension nut 08 or other fasteners; of course, the tension rod 01 at the end and the tension stopper 03 may be integrated, or may adopt other connection forms such as clamping connection. Specifically, a tension releasing device 05 is arranged on one side, away from the mold 06, of the tension blocking member 03, and the tension releasing device 05 can adjust the spacing distance between the tension nut 08 and the tension blocking member 03 to complete tension releasing, for example, the tension releasing device 05 may be a jack or a telescopic rod, and the like, and the specific structure is many, and the detailed description is omitted here, and the spacing distance between the tension nut 08 and the tension blocking member 03 can be adjusted. In fig. 1, the tension release device 05 is arranged on the outer side of only one of the tension stoppers 03, and in practice, the tension release device 05 can be arranged on both tension stoppers 03 at both ends; similarly, in fig. 1, the prestressed tensioning device 07 is arranged only outside the tensioning stopper 03 at one end, and the prestressed tensioning device 07 may also be arranged outside the tensioning stoppers 03 at both ends to realize tensioning at both ends; because the reliability and safety of the two-end tensioning are higher than those of the single-end tensioning under the condition that the length of the produced precast pile is too long or the required tensioning force is larger; specifically, two-end tensioning or single-end tensioning is selected and determined according to the produced precast pile.

One end of the tension rod 01 connected with the connector 04 is of a clamping structure, and particularly, a radial bulge is arranged at the end part of the tension rod 01 and used for being clamped with a clamping interface 11 in the connector 04.

More specifically, the connector 04 comprises two clamping interfaces 11, and the opening direction of the clamping interface 11 clamped with the tension rod 01 connected with the piece to be tensioned 02 is consistent with the demoulding direction of the piece to be tensioned 02 in the mould 06, so that the advantages of the arrangement are that: when the piece 02 to be tensioned is demoulded, the connector 04 does not need to be moved, and the piece 02 to be tensioned and the tensioning rod 01 can be directly lifted out of the mould 06 together through equipment such as a travelling crane to complete demould. When one end of the connector 04 is connected with the part 02 to be tensioned and the other end is connected with the prestress tensioning equipment 07 or the tensioning stopper 03, the tensioning rod 01 with the movable wedge block and the clamping interface 11 clamped together is connected with the prestress tensioning equipment 07 or the tensioning stopper 03, because the part 02 to be tensioned and the tensioning rod 01 connected with the part 02 to be tensioned are only required to be moved during demolding, other parts in the connector 04 do not need to be disassembled, and demolding is more convenient during setting.

It can be understood that the opening direction of the clamping interface 11 for clamping the tension rod 01 connected with the prestress tension device 07 or the tension stopper 03 can be selected at will, and can be selected to be consistent with the demoulding direction of the piece 02 to be tensioned in the mould 06, because the opening directions of the two clamping interfaces 11 of the connector 04 are the same with the demoulding direction of the piece 02 to be tensioned, the processing is more convenient when the connector 04 is produced.

Of course, it is also possible to choose the stripping direction of the part 02 to be tensioned in the mould 06, see figure 4, the arrangement is convenient for the clamping and the disassembly of the tension rod 01 connected with the prestress tension device 07 or the tension stopper 03 and the connector 04, since the tension rod 01 connected to the prestressed tension device 07 or the tension stopper 03 passes through the tension stopper 03, the tension stopper 03 limits a space in which the tension rod 01 moves radially, and a space in which the tension rod 01 moves axially because it is partially within the mold 06, therefore, the operation is limited to a certain extent, if the opening direction is opposite, the tension rod 01 connected with the to-be-tensioned member 02 can be disassembled firstly, then the connector 04 is disassembled, and finally the tension rod 01 connected with the prestress tension equipment 07 or the tension stopper 03 is disassembled, so that compared with the situation that the connector 04 can be disassembled only after all the tension rods 01 are disassembled originally, the operation of workers is more convenient; the mounting sequence during clamping is reversed. It should be noted that, under any circumstances, the central axes of the two clamping interfaces 11 should be parallel to each other, so that the connector 04 is more stable when being subjected to the tension force generated by the pre-stress tensioning device 07, shaking is not easy to occur, and the tensioning effect is better; meanwhile, the direction of the gap of the movable wedge 2 should be consistent with the opening direction of the clamping interface 11 through which the tension rod 01 clamped on the movable wedge passes, so that the tension rod 01 can enter the movable wedge 2 and be clamped with the movable wedge. Certainly, in order to guarantee the counter-pulling balance as much as possible, the effect is better when the central axes of the two clamping interfaces are arranged on a straight line.

It will be understood that a plurality of card interfaces 11 (not shown) may be provided, but it should be noted that the central axes of the card interfaces 11 are parallel to each other, and in the use state, the whole connector 04 is in a state of being balanced by opposite pulling; it should be noted that when the distance between the to-be-tensioned member 02 and the connector 04 along the length direction of the mold 06 is adjusted, if a plurality of movable wedges 2 are provided, they are adjusted synchronously as much as possible, so as to avoid the connector 04 from shifting, damaging or causing safety accidents due to the damage of the counter-pulling balance state of the connector 04.

Further, with continuing reference to fig. 1 to 3, 5 and 6, the tension rod 01 is clamped to the clamping interface 11 or the clamping interface 11 and the movable wedge 2, at this time, the control mechanism 3 stops the movable wedge 2 from sliding along the fixed surface 12 of the base 1 through the moving surface 21, when the control mechanism 3 releases the blocking effect of the movable wedge 2, because a part of the previous tension force or internal stress still remains between the tension rods 01 respectively in contact with the clamping interface 11 and the movable wedge 2, the two tension forces have a tendency to move away from each other, so that the moving surface 21 can move along the fixed surface 12, and the distance between the piece to be tensioned 02 and the connector 04 along the length direction of the mold 06 is adjusted. That is, after the movable surface 21 moves along the fixed surface 12, the distance between the two tension rods 01 connected to the same connector 04 may increase; or only the connector 04 changes its position, and the connector 04 moves to the end where the movable wedge 2 is not arranged, so that the tension rod 01 is in a state of being out of contact or about to be out of contact with the movable wedge 2 or the clamping interface 11 from close contact.

Further, referring to fig. 5 to 10, the control mechanism 3 in the connector 04 includes a fixing component 31 and an adjusting component 32. The fixing assembly 31 includes an upper pressing plate 311, and the upper pressing plate 311 is connected to the base 1. The upper pressing plate 311 and the base 1 may be connected in an auxiliary manner through an installation portion on the base 1, or the upper pressing plate 311 is hinged to one end of the base 1, that is, a hinge shaft is arranged between the upper pressing plate 311 and the base 1, and the upper pressing plate 311 may rotate by a certain angle relative to the base 1 along the hinge shaft. The adjusting assembly 32 comprises a lower pressing plate 321 and an adjusting screw rod 322, the adjusting screw rod 322 is connected with the upper pressing plate 311, and the other end of the adjusting screw rod 322 abuts against the top surface of the lower pressing plate 321 or is in threaded connection with the top surface of the lower pressing plate 321, so that the movable wedge 2 is limited. Referring to fig. 3 and 4, it can be understood that if the opening direction of the movable wedge 2 is opposite to the opening direction of the base 1, the lower pressing plate 321 may not be provided, and the other end of the adjusting screw 322 is directly abutted against the top surface of the movable wedge 2 or in threaded connection, so as to limit the movable wedge 2.

When the adjusting screw 322 is in threaded connection with the lower pressing plate 321, the other end of the adjusting screw 322 cannot be in threaded connection with the upper pressing plate 311 at this time, but can be in clamping connection or other connection forms which do not completely limit the axial movement of the adjusting screw 322 along the tension rod 01, because when the control mechanism 3 releases the blocking of the movable wedge 2 to slide along the fixed surface 12 in the base 1, namely after the adjusting screw 322 rotates axially, the movable wedge 2 is driven to move along the fixed surface 12, thereby completing the tension releasing process. At this time, the lower pressing plate 321 moves along with the movable wedge 2, and if the adjusting screw 322 is in threaded connection with the upper pressing plate 311, the central axis of the adjusting screw 322 deviates, and even the adjusting screw 322 bends or breaks; similarly, the adjusting screw 322 can be connected with the upper pressing plate 311 by screw threads and clamped with the lower pressing plate 321. It should be noted that the upper pressing plate 311 and the lower pressing plate 321 are preferably arranged perpendicular to the axis of the adjusting screw 322, which has the advantages that: not only adjusting screw 322 is more convenient when axial rotation, and it also can be better to the effect of pressing of activity voussoir 2 through holding down plate 321, has also improved adjusting screw 322's life simultaneously.

Furthermore, the fixing component further includes a stud 312, the stud 312 includes a threaded section and a smooth section, the upper pressure plate 311 includes a through hole 3111 whose radial dimension is at least slightly larger than that of the smooth section of the stud 312, that is, after one end of the stud 312 is fixed on the base 1, the upper pressure plate 311 can slide in the smooth section of the stud 312 at least through the through hole 3111, and in addition, the radial dimension of the other end of the stud 312 connected with a nut 313 or other fasteners is larger than that of the through hole 3111 in the upper pressure plate 311, so that the upper pressure plate 311 can be limited to slide in the smooth section of the stud 312, and the upper pressure plate 311 cannot be separated from the stud 312. The advantage of this arrangement is; the maximum height of the upper pressing plate 311 can be adjusted according to actual needs, and the phenomenon that the adjusting screw 322 is inclined or broken in the working process due to the fact that the distance from the bottom of the upper pressing plate 311 to the top of the lower pressing plate 321 is too large is avoided.

Further, with reference to fig. 5 to 10, the upper pressure plate 311 further includes a mounting hole 3112 having a radial dimension slightly larger than the through hole 3111 and communicating with the through hole 3111, wherein the radial dimension of the mounting hole 3112 is larger than that of the threaded portion of the stud 312 after being connected to the nut 313 or other fastening device, and the radial dimension of the transition portion of the through hole 3111 communicating with the mounting hole 3112 is at least larger than that of the smooth portion of the stud 312. The benefits of this arrangement are: the upper pressing plate 311 is very convenient to mount and dismount, the upper pressing plate 311 does not need to be dismounted after the screw cap 313 or the fastener on the stud 312 is taken down, the upper pressing plate 311 can be directly moved to the dismounting hole 3112 from the through hole 3111, then the upper pressing plate 311 can be dismounted after being moved out from the dismounting hole 3112, and the mounting is carried out in the reverse order. It should be noted that, when the upper pressing plate 311 can slide in the stud 312, before the connector 04 works, it is preferable to adjust the upper pressing plate 311 to the state of contacting with the nut 313 or other fasteners, so as to prevent the movable wedge 2 from moving when being pulled in the working process, and the lower pressing plate 321 pushes the adjusting screw 322 and the upper pressing plate 311 to make the upper pressing plate 311 collide with the nut 313 or other fasteners, which affects the overall stability of the device; meanwhile, if the movable wedge 2 moves when being pulled, the prestress tensioning equipment 07 connected to the outside of the connector 04 needs to add the distance of the movable wedge 2 to the original design tensioning distance, so that uncertainty in the production process of the precast pile is increased, the problem of insufficient tensioning or excessive tensioning exists for the to-be-tensioned part 02, the quality of the finally produced precast pile is seriously affected, and great potential safety hazards exist. Meanwhile, the adjusting screw rod 322 is made of heat-treated high-strength steel, and has high yield strength and is not easy to bend and deform. Of course, the stressed components of the control mechanism 3, such as the upper pressure plate 311, are preferably made of heat-treated high-strength steel, because the tensile force transmitted by the tension rod 01 is usually large during the tensioning process, which puts a higher demand on the control mechanism 3, and needs to be able to withstand a large impact force and a continuous tensile force.

Further, referring to fig. 7 and 10, the control mechanism 3 further includes a guide assembly 33 located between the lower pressing plate 321 and the movable wedge 2, the guide assembly 33 includes a positioning pin 331, the movable wedge 2 is provided with a mounting hole 22, the lower pressing plate 321 is provided with a guide hole 3211, and a radial dimension of the positioning pin 331 is slightly larger than a radial dimension of the mounting hole 22 and slightly smaller than a radial dimension of the guide hole 3211. The advantages of this arrangement are: by arranging the guide assembly 33, a certain limit is ensured between the movable wedge 2 and the lower pressing plate 321, and the movable wedge 2 and the lower pressing plate 321 do not slide relatively in the moving process of the movable wedge 2, so that the normal work of the control mechanism 3 is ensured; moreover, the sizes of the mounting hole 22 and the guide hole 3211 are not completely the same, so that the lower pressing plate 321 is quickly and conveniently mounted and dismounted on the premise that the guide function of the guide assembly 33 is not damaged, it can be understood that the positioning pin 331 is in interference fit with the mounting hole 22, and the positioning pin 331 is in clearance fit with the guide hole 3211; as long as it is satisfied that the positioning pin 331 and the mounting hole 22 are tightly connected without loosening, even the positioning pin 331 and the movable wedge 2 are integrated, and a small gap is formed between the positioning pin 331 and the guide hole 3211, so that the lower press plate 321 can be conveniently and directly taken out of the positioning pin 331 for replacement.

With reference to fig. 1 to 3, it can be understood that the control mechanism 3 performs the function of preventing the movable wedge 2 from sliding along the fixed surface 12 of the base 1 through its own moving surface 21 when it is subjected to a pulling force or a pressing force in the axial direction of the piece 02 to be tensioned, which is equivalent to keeping the components of the connector 04 from moving relative to each other; the control mechanism 3 is formed by combining the upper pressing plate 311, the stud 312, the adjusting screw 322 and the lower pressing plate 321, and the essence of the control mechanism is the process of pressing and releasing the movable wedge 2 by the control mechanism 3. Of course, there are many different options for the control mechanism 3, for example, the control mechanism 3 includes a bolt, after the tension rod 01 and the connector 04 are clamped in place, the bolt at least partially penetrates through the tension rod 01 and the connector 04, and the penetrating direction of the bolt is not parallel to the axial direction of the tension rod 01, preferably vertical, and the bolt preferably completely penetrates through the tension rod 01 and the connector 04, so that when the tension rod 01 is subjected to an external force, the bolt has a better limit effect on the tension rod 01; or, the control mechanism 3 includes an upper cover that can be installed with the base 1, after the tension rod 01 and the connector 04 are clamped in place, the upper cover is installed, the upper cover can at least limit the movable wedge 2 to move along the radial direction of the tension rod 01, at this time, when the tension rod 01 is subjected to tension force, the movable wedge 2 still cannot move along the fixed surface 12, and therefore, relative movement among all parts in the connector 04 is still maintained. The above descriptions only briefly describe several realizable manners, and the realizable manners are more numerous and are not described herein again.

Referring to fig. 1-3, a connector 04 is provided in the mold 06, and the connector 04 is used to separate the interior of the mold 06 into two mold cavities, and it should be noted that the central axis of the mold cavity is preferably parallel to the central axis of the connector 04, because the mold cavity is contoured to the shape of the precast pile to be finally produced, so as to ensure that the central axis of the precast pile to be finally produced is designed. The central axis of the tension rod 01, the central axis of the clamping interface 11 and the central axis of the to-be-tensioned piece 02 are on the same straight line, so that tensioning is ensured to be in place; the central axis of the cavity, the central axis of the precast pile and the central axis of the connector 04 need to be parallel to the central axes, which is not only to ensure that the pile is tensioned in place, but also to improve the quality of the precast pile. In addition, both ends of the connector 04 are connected with the member to be tensioned 02 through the tensioning rod 01, and one member to be tensioned 02 or a plurality of interconnected members to be tensioned 02 may be disposed in each mold cavity, generally depending on the type of precast pile to be produced.

In general, the to-be-tensioned member 02 is a rigid framework or a stress bar for producing a precast pile, the elongation of the rigid framework or the stress bar during the operation of the pre-stress tensioning device 07 is an actual tensioning amount, and the specific tensioning amount is determined comprehensively according to various indexes such as the size, the type and the performance requirement of the precast pile. It should be noted that in the production process of the precast pile, power such as a hydraulic cylinder is usually selected as the pre-stress tensioning device 07, so that it is required to ensure that the central axes of the tensioning rod 01, the member to be tensioned 02 and the tensioning direction of the pre-stress tensioning device 07 are located on a straight line, and only in this way, the actual tensioning force is obtained by subtracting the device transmission loss from the tensioning force generated by the pre-stress tensioning device 07; if angular deviation exists, the component force in the central axis direction of the to-be-tensioned member 02 is the actual tension force, which not only increases the burden of the prestress tensioning device 07, but also easily causes the damage of the die 06 or other production equipment due to the component force of the angular deviation of the tension force, and cannot ensure that the tension force applied to the to-be-tensioned member 02 is enough, thus easily causing the quality of the finally produced precast pile to be poor.

The utility model provides a precast pile production device, which connects a part 02 to be stretched and a part 02 to be stretched, a part 02 to be stretched and a prestress stretching device 07 or a part 02 to be stretched and a stretching stopper 03 through a connector 04, thereby completing the preparation process before stretching in the precast pile production process; meanwhile, a fixed surface 12 and a movable surface 21 which have the same inclination angle and are at least partially attached to each other are respectively arranged on the base 1 and the movable wedge 2 of the connector 04, and the control mechanism 3 can prevent the movable surface 21 in the movable wedge 2 from sliding along the fixed surface 12 of the base 1 to adjust the distance between the piece 02 to be tensioned and the connector 04 along the length direction of the die 06, namely, the movable wedge 2 and the base 1 can be kept in a relatively static state in the tensioning process; after tensioning is finished, the control mechanism 3 can release the blockage of the movable wedge 2, and at the moment, the movable wedge 2 can move along the fixing surface 12 of the base 1 so as to adjust the distance between the piece 02 to be tensioned and the connector 04 along the length direction of the die 06, so that a tensioning gap is generated; in addition, a tension device 05 is arranged outside the tension stopper 03, so that the tension gap can be further increased, the tension effect of the precast pile is improved, and the precast pile is convenient to demould.

< 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.

Compared with the first embodiment, the precast pile production equipment provided by the embodiment further has the following different structural design:

referring to fig. 11, the adjusting screw 322 is connected to the upper pressing plate 311 by a screw thread, the adjusting screw 322 is connected to the lower pressing plate 321 by a skirt 3221 of the adjusting screw 322, and a radial dimension of the skirt 3221 is greater than a radial dimension of the U-shaped hole 324 on the lower pressing plate 321. Referring to fig. 3 and 4, if the lower pressing plate 321 is not provided, the adjusting screw 322 is engaged with the movable wedge 2.

Referring to fig. 12, the adjusting screw 322 is connected with a floating screw 323 in a threaded manner, the floating screw 323 is clamped with the upper pressing plate 311, the floating screw 323 is provided with a skirt 3221, the radial dimension of the skirt 3221 is at least partially larger than the radial dimension of the U-shaped hole 324, the axial positions of the floating screw 323 and the adjusting screw 322 connected therewith can be limited to a certain extent, and the adjusting screw 322 abuts against the upper surface of the lower pressing plate 321 at this time. Referring to fig. 3 and 4, if the lower pressing plate 321 is not provided, the adjusting screw 322 directly abuts against the upper surface of the movable wedge 2.

Referring to fig. 13, one end of the adjusting screw 322 is connected to the upper pressing plate 311 by a floating screw 323, and the other end is connected to the lower pressing plate 321 by a skirt 3221 of the adjusting screw 322. Referring to fig. 3 and 4, if the lower pressing plate 321 is not provided, the adjusting screw 322 is engaged with the movable wedge 2.

Referring to fig. 14, the adjusting screw 322 is engaged with the upper pressing plate 311 through its skirt 3221, and the other end is connected to the lower pressing plate 321 through a screw thread. Referring to fig. 3 and 4, if the lower pressing plate 321 is not provided, the adjusting screw 322 is in threaded connection with the movable wedge 2.

The embodiment has the advantages that the adjusting screw rod 322 is clamped with the upper pressing plate 311 and/or the lower pressing plate 321 through the floating screw sleeve 323 or the skirt 3221 of the adjusting screw rod when being connected with the upper pressing plate 311 and/or the lower pressing plate 321, so that the contact area between the adjusting screw rod 322 and the upper pressing plate 311 and/or the lower pressing plate 321 is increased, and when the adjusting screw rod 322 is subjected to the same pressure, the contact area between the adjusting screw rod 322 and the upper pressing plate 311 and the lower pressing plate 321 is larger, the pressure intensity is smaller, and the upper pressing plate 311 and the lower pressing plate 321 can be protected from being damaged as much as possible. Meanwhile, the floating screw sleeve 323 and the skirt 3221 of the adjusting screw rod 322 can be made of high-strength alloy steel, so that the adjusting screw rod 322 can be further protected from being damaged. In addition, by adding the floating screw 323, the situation that the rotation of the adjusting screw 322 is blocked due to a large contact area when the skirt 3221 of the adjusting screw 322 contacts with the upper pressing plate 311 or the lower pressing plate 321 can be reduced, and the resistance comes from the friction force when the skirt 3221 of the adjusting screw 322 contacts with the upper pressing plate 311 or the lower pressing plate 321.

In the first and second embodiments, during the working process, according to the difference of the working environment, each component in the precast pile production equipment may also be changed and adjusted adaptively, that is, some technical implementations of the first to second embodiments may be combined or replaced.

The utility model also provides a precast pile production method, please refer to fig. 1 to 14, including preparation step, stretch-draw step, pay-off step and put a step, wherein:

the preparation method comprises the following steps: the piece 02 to be tensioned is placed in the mould 06, and the piece 02 to be tensioned is connected to the tensioning stop 03 or to a prestressing tensioning device 07 outside the tensioning stop 03 via a force-transmitting assembly and a connector 04. In this step, it is required to ensure that the central axes of the pre-stress tensioning device 07, the tensioning rod 01, the connector 04, the to-be-tensioned member 02 and the mold 06 are parallel to each other, and the central axes of the pre-stress tensioning device 07, the tensioning rod 01 and the to-be-tensioned member 02 are located on a straight line as much as possible, so that the pre-stress tensioning device 07 has the advantage that the actual conversion rate of the tensioning force of the pre-stress tensioning device 07 is improved as much as possible without considering mechanical loss, thereby reducing the requirements on the pre-stress tensioning device 07 and improving the overall efficiency of the precast pile production equipment.

Tensioning: the prestress tensioning device 07 is used for tensioning the to-be-tensioned piece 02 along the length direction of the mold 06 through the force transmission assembly and the connector 04, and meanwhile, the magnitude of prestress actually applied to the to-be-tensioned piece 02 and the elongation of the to-be-tensioned piece 02 are monitored and recorded through the monitoring device. In this step, as the butt joint of each component is completed before, the tensioning can be started only by starting the prestress tensioning device 07, and it should be noted that in the tensioning process, the actual prestress applied to the to-be-tensioned piece 02, the elongation of the to-be-tensioned piece 02 and the proportional relationship between the two need to be monitored and recorded at any time; under normal conditions, the stage with prestress but no elongation is just started, and because the connection of each internal part has an installation gap, the installation gap is eliminated by tensioning, and then the tensioning piece 02 can be tensioned; after the installation gap is eliminated, the elongation of the prestress and the elongation of the member 02 to be tensioned should be in a constant ratio, which is related to the material, size, shape, etc. of the member 02 to be tensioned, and the ratio should be strictly controlled to be substantially consistent with the ratio in design.

Feeding: the concrete is injected into the forming cavity of the mould 06 by a distribution device.

A sheet releasing step: after the concrete is solidified in the mould and the precast pile is formed by the parts to be tensioned together, the control mechanism 3 enables the movable wedge block 2 in the connector 04 to move along the inclined plane matched with the base 1, so that the distance between the movable wedge block 2 and the base 1 along the length direction of the mould 06 is adjusted to complete further tensioning. Or firstly using a tension releasing device 05 between the tension nut 08 and the tension stopper to complete preliminary tension releasing, and then enabling the movable wedge block 2 in the connector 04 to move along the inclined plane matched with the base 1 through the control mechanism 3, thereby adjusting the distance of the combination of the movable wedge block 2 and the base 1 along the length direction of the die 06 to complete further tension releasing. In this step, since both the tension applying device 05 and the connector 04 essentially have the capability of generating a tension applying clearance, the tension applying effect is the best when the tension applying device 05 and the connector 04 work together. Since the sheet release 05 is arranged outside the tensioned stops 03 and the connectors 04 are arranged between the tensioned stops 03, the handling of the sheet release 05 is relatively easy. In addition, the relaxation gap generated by the relaxation device 05 is a gap between the stretching rod 01 and the stretching stopper 03 or the prestress stretching equipment 07, and the gap is sometimes consumed by force transmission components such as the stretching rod 01 and cannot be transmitted between the connector 04 and the stretching rod 01 connected with the to-be-stretched piece 02; at this time, the blocking of the control mechanism 3 to the movable wedge 2 needs to be released, the movable wedge 2 slides along the fixing surface 12 of the base 1 to adjust the distance between the to-be-tensioned member 02 and the connector 04 along the length direction of the mold 06, so that a tension releasing gap is further generated, the to-be-tensioned member 02 and the tension rod 01 connected with the to-be-tensioned member 02 in the mold 06 are not in a tension state with the mold 06 and the connector 04, and the to-be-tensioned member 02 and the tension rod 01 connected with the to-be-tensioned member 02 can be directly lifted out of the mold 06 through equipment such as a crane and the like to complete demolding.

The precast pile production method provided by the utility model has the beneficial effects of the precast pile production equipment due to the adoption of the precast pile production equipment, and can ensure that the tension force applied to the piece 02 to be tensioned is more accurate by continuously monitoring and recording the actual prestress applied to the piece 02 to be tensioned through the monitoring equipment; the movable wedge 2 in the connector 04 and the base 1 are moved relatively through the control mechanism 3 to realize the tension release. In addition, can use earlier and stretch a ware 05 of putting on the stretch-draw fender piece to accomplish preliminary putting and open, again use the removal of movable voussoir 2 in the connector 04 to accomplish further putting and open, preceding one step put and open probably only to have relieved power transmission assembly and stretch-draw fender piece be connected, the one-step later is put and is opened and can be relieved power transmission assembly completely, connector 04 and treat the connection of stretch-draw piece 02, and because putting a ware 05 and set up outside stretch-draw fender piece, it is comparatively convenient to operate, and put a ware 05 and open earlier, it is the state of preliminary relaxation also to connector 04 and the power transmission assembly who links to each other with it, be convenient for follow-up the unblock of control mechanism 3 to movable voussoir 2, workman's operation is more convenient.

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

1. A precast pile production apparatus comprising a mold, a tension stop, and a connector, wherein:

2. A precast pile production apparatus according to claim 1, wherein the connector is connected to a member to be tensioned, a pre-stressed tensioning apparatus or a tensioned stop by a force transfer assembly, the force transfer assembly comprising a tensioning rod; the connector comprises at least two clamping interfaces with axial leads parallel to each other, and the clamping interfaces are used for being clamped with the tensioning rod, and the opening direction of at least one clamping interface is consistent with the demolding direction of the piece to be tensioned in the mold.

3. A precast pile production apparatus according to claim 2, wherein the connector includes two clip interfaces and central axes of the two clip interfaces are located on a straight line.

4. A precast pile production apparatus according to claim 2, wherein the control mechanism in the connector comprises a fixing assembly and an adjusting assembly, the fixing assembly comprising an upper press plate, the upper press plate being connected to the base; the adjusting component comprises an adjusting screw rod, the adjusting screw rod is connected with the upper pressure plate, the other end of the adjusting screw rod is abutted to the top surface of the movable wedge block or in threaded connection with the top surface of the movable wedge block, and the movable wedge block is limited.

5. The precast pile production apparatus according to claim 4, wherein the adjusting assembly further comprises a lower pressing plate, the other end of the adjusting screw abuts against the lower pressing plate, and the lower pressing plate is in contact with the movable wedge block so as to limit the movable wedge block; and the upper pressing plate and the lower pressing plate are both perpendicular to the axis of the adjusting screw.

6. The precast pile production equipment according to claim 5, wherein the adjusting screw is in threaded connection with the upper pressing plate, and the adjusting screw abuts against the top surface of the lower pressing plate.

7. The precast pile production equipment according to claim 5, wherein the adjusting screw is in threaded connection with the upper pressing plate, the adjusting screw is clamped with the U-shaped hole of the lower pressing plate, and the adjusting screw can slide at least in the U-shaped hole of the lower pressing plate along the axial direction of the tension rod.

8. The precast pile production equipment according to claim 5, wherein the adjusting screw is in threaded connection with a floating threaded sleeve, the floating threaded sleeve is provided with a skirt, and the floating threaded sleeve is clamped with a U-shaped hole in the upper pressing plate through the skirt; the floating threaded sleeve can slide in the U-shaped hole of the upper pressure plate at least along the axial direction of the tension rod; the adjusting screw is abutted against the top surface of the lower pressing plate or clamped with the lower pressing plate.

9. The precast pile production equipment according to claim 5, wherein the adjusting screw is provided with a skirt, the adjusting screw is clamped with a U-shaped hole in the upper pressing plate through the skirt, and the adjusting screw can slide at least in the U-shaped hole of the upper pressing plate along the axial direction of the tension rod; the adjusting screw rod is in threaded connection with the lower pressing plate.

10. A precast pile production apparatus according to claim 5, wherein the fixing assembly further comprises a stud connected to the base and the upper press plate, thereby completing the connection of the fixing assembly to the base; the screw bolt comprises a screw thread section and a smooth section, and the upper pressure plate can slide in the smooth section of the screw bolt at least through a through hole of the upper pressure plate.

11. The apparatus for producing a precast pile according to claim 10, wherein the upper press plate further includes a disassembly and assembly hole communicating with the through hole, and at least a portion of the smooth section of the stud may communicate with the through hole through the disassembly and assembly hole; the upper pressure plate can be separated from the stud through the self dismounting hole.

12. A precast pile production apparatus according to claim 10, wherein a guide assembly is provided between the lower press plate and the movable wedge, the guide assembly including a positioning pin provided between a mounting hole on the movable wedge and a guide hole on the lower press plate.

13. A precast pile production apparatus according to claim 12, wherein the positioning pin is an interference fit with the mounting hole, and the positioning pin is a clearance fit with the guide hole.

14. A precast pile production apparatus according to claim 2, wherein the mould is provided with at least one connector for dividing the mould into two spaced apart mould cavities, and the mould cavity is provided with at least one member to be tensioned.

15. A precast pile production apparatus according to claim 14, wherein the member to be tensioned is a rigid skeleton or a stress beam.

16. A precast pile production apparatus according to claim 14, wherein the central axis of the mold cavity is parallel to the central axis of the connector.

17. A precast pile production apparatus according to claim 14, wherein a sealing plate is provided between the tension rod and the member to be tensioned, the sealing plate being at least partially fitted to an inner surface of the mold cavity; the precast pile production equipment further comprises a material distribution device, after tensioning is completed, the material distribution device injects concrete into the die cavity of the die, and the concrete does not overflow out of the die cavity under the blocking of the sealing plate.

18. A precast pile production apparatus according to any one of claims 1 to 17, further comprising a locking member provided on a side of the tension bar remote from the mould, the locking member being movable with respect to and/or with respect to the tension bar.

19. A precast pile production apparatus according to claim 18, characterised in that the locking member employs a tension nut.

20. A precast pile production apparatus according to claim 18, wherein a tension release is provided between at least one of the locking members and the tension stop member.