CN213999938U

CN213999938U - Loose-leaf device and precast pile forming device

Info

Publication number: CN213999938U
Application number: CN202021245558.3U
Authority: CN
Inventors: 周兆弟
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-20
Filing date: 2020-06-30
Publication date: 2021-08-20
Anticipated expiration: 2030-06-30

Abstract

The utility model discloses a loose device and precast pile forming device of opening, locate and be used for controlling the spacing distance between the two between stretch-draw stiff end and the big nut, it includes the fixed plate, loose board and loose adjustment mechanism of opening, all be equipped with the passageway that supplies the stretch-draw connecting rod to pass on fixed plate and the loose board, be equipped with the guide face of slope on the fixed plate, loose is equipped with the fitting surface unanimous with guide face inclination on opening the board, loose one end of opening adjustment mechanism and loose board threaded connection, when fitting surface laminating guide face, axially static loose adjustment mechanism of opening circumference is rotatory, in order to drive loose board along guide face motion; the utility model discloses well pine is opened and is adjusted structure and turn into the pulling force of opening the board with torsional force to the pine to the board is opened to the drive pine shifts up along the guide face and realizes the change of spacing distance between stretch-draw stiff end and the big nut, reaches the tensile purpose of release, and this structure not only can realize quick effectual putting and open, and the manual strength is low moreover.

Description

Loose-leaf device and precast pile forming device

Technical Field

The utility model relates to a precast pile makes the field, especially relates to a device, precast pile forming device are opened to pine.

Background

The precast pile is a building member which is precast and formed by using a mold in a factory or a construction site. In order to obtain a good quality member, it is necessary to ensure good adhesion between the tendon and the concrete in addition to the concrete quality during the whole production process, so that the prestressed concrete member can obtain a prestress value meeting the design requirement, and it is a common practice to stretch the tendon before the concrete is poured.

And when the strength of the concrete reaches the standard, loosening and tensioning the stress bar, and demoulding to obtain the precast pile. The prior art discloses a stretching and loosening mode of a precast pile, wherein a plurality of stress bars are welded into a framework through spiral bars, two ends of the framework are respectively connected with a stretching plate and a fixing plate, one end of a stretching connecting rod is connected with the stretching plate, the other end of the stretching connecting rod is connected with stretching equipment, the stretching equipment drives the stretching connecting rod to move axially to perform prestress stretching, and after the stretching is finished, the large nut is abutted to a stretching end on a mold so as to prevent the stress bars from moving back through the stretching plate. When the stress bar is loosened, the large nut is manually screwed, and the large nut is separated from the tensioning end to achieve the loosening of the stress bar.

Therefore, how to provide an efficient relaxation device becomes a problem which needs to be solved urgently in the industry.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a device and precast pile forming device are opened to pine, wherein, the pine is opened the device and can effectively be realized high-efficiently putting and open and reduce artifical intensity.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a device is opened to pine is located and is used for controlling spacing distance between the two between stretch-draw stiff end and the big nut, including fixed plate, pine open the board and loose adjustment mechanism, the fixed plate with the pine all is equipped with the passageway that supplies the stretch-draw connecting rod to pass on the board, be equipped with the guide face of slope on the fixed plate, the pine open be equipped with on the board with guide face inclination unanimous fitting surface, the pine open adjustment mechanism's one end with board threaded connection is opened to the pine, works as the fitting surface laminating when the guide face, axial standstill adjusting mechanism rotation in circumferential direction is opened to the pine, in order to drive the board is followed to the pine open the guide face motion.

Compared with the prior art, the utility model provides a device is opened to pine when carrying out the prestressing force pine to the precast pile skeleton and opening, the passageway of board and fixed plate are opened to the pine to the stretch-draw connecting rod is worn to locate, big nut supports and leans on the board is opened to the pine, the board is opened to the pine and the fixed plate is hugged closely and is placed, contact surface between them is the unanimous inclined plane of inclination, and set up the pine on the board and open adjustment mechanism at the pine, adjustment mechanism is opened to the pine axial standstill and rotation in circumference under the drive of circumference power, under the screw-thread fit effect of adjusting mechanism and board is opened to the pine, thereby the board is opened to the pine will receive the pulling force of the pine and open adjustment mechanism and move along the guide face of fixed plate.

From the above description can know, the utility model discloses set up inclined plane complex fixed plate and pine between stretch-draw stiff end and big nut and open the board, through the pine adjust the structure with the pine open the screw-thread fit effect of board, the pine is opened and is adjusted the structure and can turn into the pulling force of board to the pine with torsional force under the circumstances that keeps axial static and circumference rotation to thereby reduce the fixed plate and the pine and open the interval distance between thickness adjustment stretch-draw stiff end and the big nut between the board, this structure not only can realize quick effectual putting and open, and manual operation intensity is low moreover.

Optionally, the pine props adjustment mechanism and includes adjusting bolt and mount pad, adjusting bolt includes the screw thread section and revolves the section soon, the mount pad is connected and is fixed in the stretch-draw stiff end or the fixed plate, revolve wrong section axial joint in the mount pad, the screw thread section with the screw thread through-hole spiro union that the pine opened the board on the terminal surface.

Optionally, the mounting seat comprises a top plate, the top plate is perpendicular to the axis of the adjusting bolt, the top plate comprises a U-shaped groove, the maximum width of the U-shaped groove is smaller than the maximum diameter of the screwing section, and the maximum diameter of the screwing section is larger than the diameter of the thread section.

Optionally, the screwing part comprises two bosses axially arranged at intervals and an optical axis section clamped between the two bosses, the optical axis section is located in the U-shaped groove, the two bosses are respectively located on two sides of the thickness direction of the top plate, and the distance between the two bosses is slightly larger than the thickness of the top plate.

Optionally, the mount pad still includes the mounting panel, the mounting panel is connected and is fixed in the stretch-draw stiff end, the mounting panel with the fixed plate is connected fixedly, the mounting panel with the roof is connected fixedly or for integrated into one piece structure by the fastener.

Optionally, the loosening adjusting mechanism comprises an adjusting bolt and a limiting block, the adjusting bolt comprises a thread section and a screwing section, the limiting block is arranged in the channel of the loosening plate, the thread section abuts against the limiting block, and the thread section is in threaded connection with a thread through hole formed in the end face of the loosening plate.

Optionally, the width of the stopper is substantially the same as the width of the channel; one end of the limiting block, which is abutted against the tensioning connecting rod, is provided with an arc groove, and the arc groove is matched with the outer contour shape of the tensioning connecting rod; and a counter bore is formed in one end, abutted against the threaded section, of the limiting block, and the diameter of the counter bore is larger than or equal to that of the threaded section.

Optionally, the loosening device further comprises a cushion block, and the cushion block is supported below the fixed block; and/or the tensioning fixed end and the fixed block are connected and fixed by a fastener.

Optionally, the guide surface is provided with a sliding block along the direction of the inclination angle, and the matching surface is provided with a sliding groove matched with the sliding block along the direction of the inclination angle; or, the guide face has seted up the spout along inclination direction, the fitting surface along inclination direction seted up with spout complex slider.

The utility model also provides a precast pile forming device, which comprises an outer frame capable of accommodating more than two precast pile forming dies, wherein the two longitudinal ends of the outer frame form a tensioning retaining wall respectively, and the tensioning retaining wall is provided with at least two tensioning adjusting holes; wherein, the tensioning retaining wall at least one longitudinal end of the outer frame is a tensioning fixed end.

The precast pile forming device provided by the utility model comprises a loosening and tensioning device which can release tension efficiently, so that the precast pile forming device comprising the loosening and tensioning device also has the functions mentioned by the loosening and tensioning device; in addition, the precast pile forming device can flexibly adjust the number, specification and model of the loose-open devices according to the production arrangement requirement; in addition, the precast pile forming device comprises a tensioning retaining wall with tensioning adjusting holes, wherein the tensioning retaining wall is a tensioning fixed end, and the tensioning adjusting holes are longitudinally corresponding to the channels of the loosening devices one by one. The tensioning connecting rod sequentially penetrates through the tensioning adjusting hole, the loosening device and the large nut, the tensioning connecting rod is locked on the tensioning retaining wall through the large nut after tensioning, and the loosening device is arranged between the tensioning retaining wall and the large nut and used for adjusting the spacing distance between the tensioning retaining wall and the large nut. The utility model provides a precast pile forming device has the characteristic of putting that an efficiency is high, artifical intensity is low.

Drawings

Fig. 1 is a schematic structural view of a tensioning device in a non-tensioned state according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic structural view of a tension releasing device in a tension device according to a first embodiment of the present invention in a released state;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

fig. 5 is a perspective view of the relaxation device in an unstretched state according to the first embodiment of the present invention;

fig. 6 is a perspective view of another loosening device according to the first embodiment of the present invention without an adjusting bolt;

fig. 7 is a perspective view of another tensioning device in accordance with a first embodiment of the present invention;

fig. 8 is a perspective view of another relaxing device in an expanded state according to the first embodiment of the present invention;

fig. 9 is a schematic structural view of a loosening device installed at a tensioning adjustment hole of a part of a precast pile forming device according to a second embodiment of the present invention;

the list of labels in the figure is:

1000. a tensioning device; 100. a tension releasing device; 101. stretching the fixed end; 102. stretching the connecting rod; 103. a large nut;

1. a fixing plate; 11. a guide surface; 12. a slider;

2. loosening and stretching the board; 21. a channel; 22. a mating surface; 23. a threaded through hole; 24. a chute;

3. a slack adjusting mechanism; 31. adjusting the bolt; 311. a threaded segment; 312. screwing sections; 3121. a boss; 3122. a light axis segment;

32. a mounting seat; 321. a top plate; 3211. a U-shaped groove; 322. mounting a plate; 323. a rib plate;

33. a limiting block; 331. an arc groove; 332. a counter bore;

200. a precast pile forming device; 201. a precast pile forming die; 202. an outer frame; 2020. tensioning the adjusting holes; 2021. tensioning the retaining wall; 2022. a side wall; 2023. a connecting plate.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

For convenience, the terms of interest in this embodiment are defined as follows:

in the state of releasing and tensioning, a plate fixed relative to a tensioning fixed end is defined as a fixed plate, a plate moving relative to the tensioning fixed end is defined as a tensioning plate, and the axial direction is along the axial direction of the tensioning plate; the transverse direction is a tensioning direction; the definition is inner and outer along the direction close to the axis of the precast pile forming die, and the definition is preferably applied to all parts without other descriptions.

Example one

The embodiment provides a tension releasing device 100, such as a tension device 1000 shown in fig. 1-2, which is disposed at a tensioning end of a precast pile, when a precast pile framework (not shown) is tensioned, the tension releasing device 100 is disposed between a tensioning fixed end 101 and a large nut 103, when a predetermined tensioning value is reached, the large nut 103 rotates towards the tensioning end and abuts against the tension releasing device 100, and when the tension is released, a spacing distance between the tensioning fixed end 101 and the large nut 103 is adjusted by adjusting a thickness of the tension releasing device 100. Preferably, the tensioning device 1000 is arranged at the fixed end, and when the precast pile framework is tensioned, the large nut 103 is screwed in advance and abuts against the tensioning device 100 to compress the tensioning device 100, so that the tensioning connecting rod 102 is prevented from being inclined to change the preset initial thickness of the tensioning device 100 during tensioning. The tensioned fixing end 101 may be an end plate of a tensioned end or a fixing end of a single mold, or may be a tensioned retaining wall 2021 of a tensioned end or a fixing end of the precast pile forming device 200, and the specific structures of the tensioned fixing end 101, the tensioned connecting rod 102, and the large nut 103 may refer to the prior art, which is not described herein again.

As shown in fig. 3-4, the relaxation device 100 provided in this embodiment includes a fixed plate 1, a relaxation plate 2, and a relaxation adjusting mechanism 3, wherein the fixed plate 1 and the relaxation plate 2 are both provided with a channel 21 for passing through the tension connecting rod 102, the minimum diameter of the channel 21 is greater than the diameter of the tension connecting rod 102, the channel 21 may be an elongated channel 21, or may be a large circular hole, so that when the relaxation plate 2 moves, the relaxation plate 2 does not interfere with the tension connecting rod 102. Be equipped with the guide face 11 of slope on the fixed plate 1, loose the fitting surface 22 that is equipped with on the board 2 and is unanimous with guide face 11 inclination, loose one end of opening adjustment mechanism 3 is connected with loose the board 2 of opening, and when the fitting surface 22 laminating guide face 11, the axial static loose 3 circumferential direction rotations of opening adjustment mechanism to drive loose the board 2 and move along guide face 11.

Adopt above-mentioned structure, the pine who is connected with loose board 2 opens and to adjust the structure and can turn into torsional force to the pulling force of loosing board 2 under the circumstances that keeps axial static and circumferential direction rotatory, consequently, when big nut 103 with stretch-draw connecting rod 102 lock put under the circumstances of stretch-draw stiff end 101, can locate the spacing distance between stretch-draw stiff end 101 and the big nut 103 with loose device 100 of opening, thereby saved the manual work and twisted big nut 103 and transversely put a step, and effectively reduce artifical intensity and realize high-efficiently putting and open.

There are various embodiments for realizing the cooperation of the tension releasing plate 2 and the tension releasing adjusting mechanism 3, which will be described in detail later.

In a specific embodiment, as shown in fig. 3-5, the tension releasing adjusting mechanism 3 includes an adjusting bolt 31 and a mounting seat 32, the adjusting bolt 31 includes a threaded section 311 and a screwing section 312, the mounting seat 32 is connected and fixed to the tension fixing end 101 or the fixing plate 1, the screwing section 312 is axially clamped to the mounting seat 32, the tension releasing plate 2 is provided with a threaded through hole 23 on an end surface along a length direction of the passage 21, and the threaded section 311 is screwed with the threaded through hole 23. That is, the screw section 312 of the adjusting bolt 31 abuts on the mounting seat 32, and the adjusting bolt 31 can convert the torsion force into the pulling force to the tension releasing plate 2 under the condition that the screw section 312 is subjected to the circumferential driving force. Because the loose tension plate 2 is matched with the fixed plate 1 by the inclined surface, the loose tension plate 2 only needs to move upwards along the guide surface 11 by a part of distance, the transverse distance between the loose tension plate 2 and the fixed plate 1 can be adjusted to generate the spacing distance for releasing the loose tension, and the loose tension plate 2 does not need to be completely pulled out.

It should be noted that the circumferential driving force may be to manually screw the screw section 312 of the adjusting bolt 31, or may be to hydraulically or start the circumferential screw to screw.

Specifically, as shown in fig. 3 and 5, the mounting seat 32 includes a top plate 321, and the top plate 321 is perpendicular to the axis of the adjusting bolt 31, in this state, the adjusting bolt 31 is more stable when rotating in the circumferential direction, the adjusting bolt 31 is less prone to bending, and the tension releasing plate 2 can be driven to move up along the guide surface 11, and the tension releasing stability of the tension releasing device 100 is the best. The top plate 321 includes a U-shaped groove 3211, the opening direction of the U-shaped groove 3211 faces the tensioning direction, the maximum width of the U-shaped groove 3211 is smaller than the maximum diameter of the screwing section 312 and the maximum width of the U-shaped groove 3211 is greater than the diameter of the thread section 311, and the maximum diameter of the screwing section 312 is greater than the diameter of the thread section 311, so when the adjusting bolt 31 is installed, the screwing section 312 of the adjusting bolt 31 can be clamped above the U-shaped groove 3211 and the thread section 311 can be clamped in the U-shaped groove 3211.

It should be noted that, in order to realize that the tension releasing plate 2 moves upward along the guide surface 11 for a certain distance to satisfy the tension releasing requirement, the distance between the top plate 321 and the tension releasing plate 2 should be greater than the vertical distance that the tension releasing plate 2 moves upward along the guide surface 11, and the length of the U-shaped groove 3211 should be greater than the lateral distance that the tension releasing plate 2 moves upward along the guide surface 11.

Further, as shown in fig. 4, the screwing segment 312 includes two bosses 3121 arranged at intervals along the axial direction thereof and an optical axis segment 3122 sandwiched between the two bosses 3121, the optical axis segment 3122 is located in the U-shaped groove, the two bosses 3121 are respectively located at two sides of the thickness direction of the top plate 321, and a distance between the two bosses 3121 is slightly greater than the thickness of the top plate 321, so as to ensure smooth installation of the screwing segment 312. The upper boss 3121 is used to increase the contact area between the screwing segment 312 and the top plate 321, so as to ensure that the adjusting bolt 31 does not shake during screwing; the lower boss 3121 is for limiting the axial movement of the adjusting bolt 31 in the circumferential rotation.

The structure of the mounting base 32 is various, for example, the mounting base 32 further includes a mounting plate 322, the mounting plate 322 is fixedly connected to the tension fixing end 101, the mounting plate 322 is fixedly connected to the fixing plate 1, and the mounting plate 322 and the top plate 321 are fixedly connected by a fastening member or are integrally formed. In addition, the mounting seat 32 further includes rib plates 323 located at two sides below the top plate 321 and connected and fixed with the mounting plate 322, and the rib plates 323 are used for reinforcing the overall strength of the mounting seat 32 and supporting the top plate 321.

While one embodiment of the tensioning device 100 is described above, the tensioning device 100 may have other configurations.

The present embodiment further provides another tension releasing device 100, as shown in fig. 6 to 8, the tension releasing adjustment mechanism 3 includes an adjustment bolt 31 and a limit block 33, the adjustment bolt 31 includes a threaded section 311 and a screwing section 312, the limit block 33 is disposed in the channel 21 of the tension releasing plate 2, the minimum diameter of the channel 21 is greater than the diameter of the tension connecting rod 102, the channel 21 may be an elongated channel 21, or may be a larger circular hole, so that when the tension releasing plate 2 moves, the tension releasing plate 2 does not interfere with the tension connecting rod 102. The threaded section 311 abuts against the limiting block 33, the tension releasing plate 2 is provided with a threaded through hole 23 in the end face along the length direction of the channel 21, the threaded section 311 is in threaded connection with the threaded through hole 23, and in the tension releasing state, the limiting block 33 abuts against the tension connecting rod 102 and limits the axial movement of the adjusting bolt 31 under the pushing action of the end portion of the threaded section 311 of the limiting block 33.

It should be noted that, in order to achieve that the tension releasing plate 2 moves upward by a certain distance to meet the tension releasing requirement, the distance between the screwing section 312 of the adjusting bolt 31 and the tension releasing plate 2 should be greater than the distance that the tension releasing plate 2 needs to move upward.

Further, as shown in fig. 6-8, in order to ensure that the stopper 33 does not incline when the adjusting bolt 31 abuts against the stopper 33, the width of the stopper 33 is substantially the same as the width of the channel 21; in addition, one end of the limiting block 33, which is abutted against the tensioning connecting rod 102, is provided with an arc groove 331, the arc groove 331 is matched with the outer contour shape of the tensioning connecting rod 102, and the contact area of the limiting block 33 and the tensioning connecting rod 102 is increased, so that the tensioning connecting rod 102 is prevented from being damaged under the action of abutting thrust; in order to enhance the stability of the adjusting bolt 31 during screwing, a counter bore 332 is formed in one end, abutted to the threaded section 311, of the limiting block 33, the diameter of the counter bore 332 is larger than or equal to the diameter of the threaded section 311, and the end portion of the threaded section 311 is enabled to abut against the counter bore 332.

In the working process of releasing and tensioning, the limiting block 33 is abutted to the tensioning connecting rod 102 under the abutting and pushing action of the adjusting bolt 31, the adjusting bolt 31 is driven by a circumferential driving piece (not shown in the figure) to rotate circumferentially, the circumferential driving piece can be a sleeve or a wind cannon capable of rotating circumferentially, the end part of the thread section 311 is abutted to a counter bore 332 of the limiting block 33, the stress point of the adjusting bolt 31 is ensured, the adjusting bolt 31 is axially static and rotates circumferentially under the limitation of the circumferential driving piece and the limiting block 33, and the releasing and tensioning plate 2 is driven to move upwards along the guide surface 11 to release and tension.

In addition, the loosening and tensioning device 100 further comprises a cushion block (not shown in the figure), and the cushion block is supported below the fixed block; and/or the tensioning fixing end 101 and the fixing block are connected and fixed by a fastener, so that the fixing block is static relative to the tensioning fixing end 101, and the stability of the tensioning device 100 in use is ensured.

In the two specific loosening devices 100, as shown in fig. 3 and 8, the fixed plate 1 and the loosening plate 2 in the loosening device 100 may also be a sliding slot 24 for the sliding block 12 to cooperate, optionally, the guide surface 11 is provided with the sliding block 12 along the direction of the inclined angle, and the fitting surface 22 is provided with the sliding slot 24 for cooperating with the sliding block 12 along the direction of the inclined angle; alternatively, the guide surface 11 is provided with a slide groove 24 along the direction of the inclination angle, and the engagement surface 22 is provided with a slider 12 engaged with the slide groove 24 along the direction of the inclination angle. The cooperation of the slide grooves 24 of the slide blocks 12 allows the tension releasing plate 2 to be accurately positioned between the installation and the fixed plate 1, and also provides a guiding function when the tension releasing plate 2 moves along the guide surface 11 of the fixed plate 1.

Example two

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

As shown in fig. 9, the present invention further provides a precast pile forming apparatus 200, which includes an outer frame 202 capable of accommodating more than two precast pile forming molds 201, wherein two longitudinal ends of the outer frame 202 form a tensioned retaining wall 2021, and the tensioned retaining wall 2021 is provided with at least two tensioned adjusting holes 2020; wherein, the tensioned retaining wall 2021 at least one longitudinal end of the outer frame 202 is a tensioned fixing end 101. In order to meet the requirement that the tensioned retaining wall 2021 can stretch a reinforcement cage (not shown in the drawings), the tensioned connecting rod 102 used in tensioning can pass through the tensioned retaining wall 2021 and be connected with a tensioned plate of each precast pile forming die 201, and because the central axis of the precast pile forming die 201 and the central axis of the tensioned connecting rod 102 may change, that is, the central axis of the tensioned connecting rod 102 and the central axis of each precast pile forming die 201 do not coincide, the position of the tensioned connecting rod 102 needs to be adjusted, a plurality of elongated tensioned adjusting holes 2020 corresponding to each precast pile forming die 201 one by one are formed in the tensioned retaining wall 2021 at transverse intervals, and the tensioned adjusting holes 2020 are communicated with each precast pile forming die 201, so that the position of the connecting rod 102 can be adjusted in the tensioned adjusting holes 2020.

The precast pile forming device 200 provided by the present embodiment includes the loosening device 100 for efficiently releasing the pile, so the precast pile forming device 200 including the loosening device 100 also has the functions mentioned above with respect to the loosening device 100; moreover, the precast pile forming device 200 can flexibly adjust the number, specification and model of the loose-open devices 100 according to the production arrangement requirement; in addition, the precast pile forming device 200 includes a tensioned retaining wall 2021 having tensioning adjusting holes 2020, and the tensioning adjusting holes 2020 correspond to the channels 21 of the respective loosening devices 100 one by one in the longitudinal direction. The tensioning connecting rod 102 sequentially penetrates through the tensioning adjusting hole 2020, the tensioning device 100 and the large nut 103, the tensioning connecting rod 102 is locked on the tensioned retaining wall 2021 by the large nut 103 after tensioning, and the tensioning device 100 is arranged between the tensioned retaining wall 2021 and the large nut 103 and used for adjusting the spacing distance between the tensioned retaining wall 2021 and the large nut 103. The utility model provides a precast pile forming device 200 has the characteristic of putting to open efficiently, artifical intensity is low.

Furthermore, in the embodiment of the present invention, the lateral ends of the outer frame 202 form side walls 2022 respectively; the tensioned retaining wall 2021 and the side wall 2022 are connected and fixed by a connecting plate 2023 to form an open accommodating cavity; furthermore, the connecting plate 2023 is fastened to the end of the tensioned wall 2021 by a plurality of fasteners (not shown) spaced apart from each other, and/or the connecting plate 2023 is fastened to the end of the sidewall 2022 by a plurality of fasteners (not shown) spaced apart from each other; or the end part of the tensioning retaining wall 2021 is clamped and fixed or joggled and fixed with the end part of the side wall 2022.

Preferably, the precast pile forming mold 201 is fixedly connected in the open type accommodating cavity; the distance between the two stretched retaining walls 2021 is greater than the longitudinal length of the precast pile forming die 201. In actual application, precast pile forming die 201 is detachably connected and fixed in the uncovered formula holds the intracavity, when the precast pile of different specifications is made, or precast pile forming die 201 damages, can adapt to the production needs through changing precast pile forming die 201.

In the above structure, the size of the outer frame 202 can be adjusted by increasing or decreasing the number of the side walls 2022 and/or the tensioned retaining walls 2021 according to the length, the width and the number of the precast pile forming molds 201, so that the enclosed outer frame 202 can accommodate precast pile forming molds 201 with different sizes and numbers. Of course, the size of the outer frame 202 may be adjusted by replacing the side walls 2022 and the tensioned walls 2021 with different lengths. A part of space is reserved between the precast pile forming die 201 and the outer frame 202, the precast pile forming die 201 can be added or replaced within a certain width size range without disassembling the outer frame 202, and the working efficiency is improved. Meanwhile, the side wall 2022 and the tensioned retaining wall 2021 are quickly detached to move, so that the limitation on a production site in the production process is reduced. In this embodiment, the side wall 2022 and the tensioned retaining wall 2021 may be made of reinforced concrete members or steel structural members.

Further, in the precast pile production process, in order to reduce the maintenance time of the precast pile, improve the maintenance effect, and increase the structural strength of the precast pile, a steam passage (not shown) is formed in the outer frame 202.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a device is opened to pine, locates and is used for controlling the interval distance between the two between stretch-draw stiff end and the big nut, its characterized in that includes: fixed plate, pine open the board and loose adjustment mechanism, the fixed plate with the pine is opened and all is equipped with the passageway that supplies stretch-draw connecting rod to pass on the board, be equipped with the guide face of slope on the fixed plate, the pine open be equipped with on the board with guide face inclination unanimous fitting surface, the pine open adjustment mechanism's one end with board threaded connection is opened to the pine, works as the fitting surface laminating during the guide face, axial standstill adjustment mechanism rotation in circumferential direction is opened to the pine, in order to drive the board is followed to the pine guide face motion.

2. A tension releasing device according to claim 1, wherein the tension releasing adjusting mechanism comprises an adjusting bolt and a mounting seat, the adjusting bolt comprises a thread section and a screwing section, the mounting seat is fixedly connected to the tension fixing end or the fixing plate, the screwing section is axially clamped to the mounting seat, and the thread section is in threaded connection with a thread through hole formed in the end face of the tension releasing plate.

3. A relaxation device as claimed in claim 2, wherein the mounting seat comprises a top plate arranged perpendicular to the adjustment bolt axis, the top plate comprising a U-shaped groove having a maximum width smaller than the maximum diameter of the screw section, the maximum diameter of the screw section being larger than the diameter of the screw section.

4. A relaxation device as claimed in claim 3, wherein said screwing part comprises two bosses spaced apart from each other in the axial direction thereof and an optical axis section sandwiched between the two bosses, said optical axis section being located in the U-shaped groove, the two bosses being located on both sides of the top plate in the thickness direction thereof, respectively, and the distance between the two bosses being slightly larger than the thickness of the top plate.

5. A relaxation device as claimed in claim 4, wherein the mounting base further comprises a mounting plate, the mounting plate is fixedly connected to the tension fixing end, the mounting plate is fixedly connected to the fixing plate, and the mounting plate and the top plate are fixedly connected by a fastener or are of an integrally formed structure.

6. A tension releasing device according to claim 1, wherein the tension releasing adjusting mechanism comprises an adjusting bolt and a limiting block, the adjusting bolt comprises a thread section and a screwing section, the limiting block is arranged in the channel of the tension releasing plate, the thread section abuts against the limiting block, and the thread section is in threaded connection with a thread through hole formed in the end face of the tension releasing plate.

7. A relaxation device as claimed in claim 6, wherein the width of the stopper is substantially the same as the width of the channel; one end of the limiting block, which is abutted against the tensioning connecting rod, is provided with an arc groove, and the arc groove is matched with the outer contour shape of the tensioning connecting rod; and a counter bore is formed in one end, abutted against the threaded section, of the limiting block, and the diameter of the counter bore is larger than or equal to that of the threaded section.

8. A relaxation device as claimed in claim 7, further comprising a spacer supported below the fixed block; and/or the tensioning fixed end and the fixed block are connected and fixed by a fastener.

9. A tension releasing device as claimed in any one of claims 1 to 8, wherein said guide surface has a slider formed along an oblique direction, and said engagement surface has a sliding groove formed along an oblique direction for engaging with said slider;

or, the guide face has seted up the spout along inclination direction, the fitting surface along inclination direction seted up with spout complex slider.

10. Precast pile forming device, its characterized in that includes:

the outer frame can accommodate more than two precast pile forming dies, two longitudinal ends of the outer frame respectively form a tensioning retaining wall, and the tensioning retaining wall is provided with at least two tensioning adjusting holes;

wherein a tensioned retaining wall of at least one longitudinal end of the outer frame is the tensioned fixing end of any one of claims 1 to 9.