CN215758987U - End-plate-free precast pile stretch-draw nut positioning device - Google Patents
End-plate-free precast pile stretch-draw nut positioning device Download PDFInfo
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- CN215758987U CN215758987U CN202121140817.0U CN202121140817U CN215758987U CN 215758987 U CN215758987 U CN 215758987U CN 202121140817 U CN202121140817 U CN 202121140817U CN 215758987 U CN215758987 U CN 215758987U
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Abstract
The application discloses a tensioning nut positioning device for an end-plate-free precast pile, which comprises a limiting inner ring, a protecting outer ring, an elastic connecting piece and a tensioning nut, wherein one end of the elastic connecting piece is fixed on the inner wall of the protecting outer ring, the other end of the elastic connecting piece is tangent to and fixed with the limiting inner ring, and the limiting inner ring and the protecting outer ring are concentrically arranged and are connected together through the elastic connecting piece; the limiting inner ring is provided with a limiting through hole, and the tensioning nut is fixed in the limiting through hole; the tensioning nut is provided with a fixing groove, a thread is arranged on the inner wall of one end of the tensioning nut, the other end of the tensioning nut is provided with a butting part protruding out of the inner wall of the tensioning nut, and the end part of the main rib can enter the tensioning nut through the fixing groove and butt against the butting part. The device connects the limit inner ring and the protection outer ring into a concentric ring positioning device which is circumferentially and uniformly distributed through an elastic connecting piece, and the protection outer ring can protect the acute angle of the pile end; the tensioning nut is fixed in the limiting through hole, the tensioning nut can be synchronously locked once when the tensioning screw is installed, and the efficiency is very high.
Description
Technical Field
The utility model relates to the technical field of tensioning of prefabricated parts, in particular to a tensioning nut positioning device for an endless plate prefabricated pile.
Background
The precast pile is divided into a precast pile with an end plate and a precast pile without the end plate, the pile head of the precast pile with the end plate is composed of the end plate and the hoop plate, and the hoop plate and the end plate are fixed together in a welding or riveting mode, so that the end plate is further hooped on the pile body.
For the precast pile without the end plate, because a plurality of tensioning sleeve nuts are correspondingly connected with the prestressed reinforcement upset heads, tensioning tension force is transmitted to the steel bars through the tensioning sleeve nuts when tensioning is mainly started, the main reinforcements of the precast pile are several and dozens of different, each tensioning sleeve nut is independent and is not mutually connected, assembly between the tensioning sleeve nuts and the tensioning screws can be carried out one by one when assembly is caused, screw holes corresponding to the head and tail plates are aligned and in place when the assembly is carried out, the tensioning sleeve nuts are fixed by a wrench to prevent the tensioning screws from being screwed, the tensioning sleeve nuts can rotate to lead to untightening between the tensioning sleeve nuts and the tensioning screws, and therefore the tensioning force is influenced, and the steel bars are easily broken.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention provides a tensioning nut positioning device for an endless precast pile, which connects a limiting inner ring and a protecting outer ring into a concentric ring positioning device uniformly distributed in an annular direction through an elastic connecting member, wherein the protecting outer ring on the outer side can protect an acute angle of a pile end to prevent the acute angle of the pile end from being damaged; and every stretch-draw sleeve nut can be fixed in spacing through-hole on the spacing inner ring, and stretch-draw sleeve nut can be restrained fixedly on three-dimentional, neither can rotate nor axial float for when installing the stretch-draw screw, can directly screw a plurality of stretch-draw screws with a plurality of wind big gun, just can lock the stretch-draw screw in step once, and efficiency is very high.
In order to achieve the purpose, the utility model provides a tensioning nut positioning device for an end-plate-free precast pile, which comprises a limiting inner ring, a protecting outer ring, an elastic connecting piece and a tensioning nut, wherein one end of the elastic connecting piece is fixed on the inner wall of the protecting outer ring, the other end of the elastic connecting piece is tangent to and fixed with the limiting inner ring, and the limiting inner ring and the protecting outer ring are concentrically arranged and are connected together through the elastic connecting piece; the limiting inner ring is provided with a limiting through hole, and the tensioning nut is fixed in the limiting through hole; the tensioning nut is provided with a fixing groove, a thread is arranged on the inner wall of one end of the tensioning nut, the other end of the tensioning nut is provided with a butting part protruding out of the inner wall of the tensioning nut, and the end part of the main rib can enter the tensioning nut through the fixing groove and is butted with the butting part. The tensioning nut positioning device for the end-plate-free precast pile connects the inner limiting ring and the outer protecting ring into a concentric ring positioning device which is circumferentially and uniformly distributed through the elastic connecting piece, wherein the outer protecting ring can protect the acute angle of the pile end to avoid the acute angle of the pile end from being damaged; each tensioning sleeve nut can be fixed in a limiting through hole on the limiting inner ring, and the tensioning sleeve nuts can be restrained and fixed in three dimensions and cannot rotate or axially float, so that when the tensioning screws are installed, a plurality of air cannons can be directly used for screwing a plurality of tensioning screws, the tensioning screws can be synchronously locked at one time, and the efficiency is very high; the fixed slot on the tensioning nut can make the pier head at the end of the main rib conveniently enter the tensioning nut and tightly abut against and fix with the abutting part, so that the tensioning nut and the abutting part can stably transmit force during tensioning.
In one example, the resilient connector imparts a force to the outer protective ring away from the inner retainer ring. The elastic connecting piece gives the force of the protection outer ring deviating from the limit inner ring, namely the protection outer ring is pushed to the outer side of the plane of the pile end. When the tensioning anchor plate is installed, the protective outer ring always supports against the inner side plane of the tensioning plate due to elasticity, and the phenomenon that the protective outer ring is separated from the tensioning plate when in tensioning sliding and cannot displace to protect the acute angle is avoided.
In one example, no end plate precast pile stretch-draw nut positioner still includes the retaining member, stretches into at the tip of owner muscle under the state in the stretch-draw nut, the retaining member hoop is fixed in stretch-draw nut's lateral surface with locking owner muscle with stretch-draw nut.
In one example, the limiting inner ring is a steel stamping flange, and a plurality of limiting through holes are uniformly formed in the steel stamping flange. The steel stamping flange can be directly used as a limit inner ring.
In one example, the limiting inner ring is composed of an open hole section and an arc section which are arranged at intervals, the limiting through hole is arranged on the open hole section, and the size of the outer edge of the open hole section is larger than that of the outer edge of the arc section. The steel stamping flange is of an equal-wall-thickness structure, and can also adopt a non-equal-wall-thickness structure, so that the used materials of arc-shaped sections used for connection among the perforated sections can be reduced, and the manufacturing cost is reduced.
In one example, the limiting through-holes are provided as polygonal through-holes.
In one example, the elastic connecting piece comprises an outer ring connecting section, a middle connecting section and an inner ring connecting section which are sequentially connected, the outer ring connecting section is fixed on the inner wall of the protection outer ring, and the inner ring connecting section is tangent to and fixed with the limiting inner ring. The outer ring connecting section, the middle connecting section and the inner ring connecting section enable the elastic connecting piece to be in a Z-shaped structure, and the elastic connecting piece can have elasticity and provide outward force for protecting the outer ring.
In one example, the inner ring connecting section is fixed on the outer side of the limiting inner ring provided with the limiting through hole. The inner ring connecting section is fixed on the outer side of the limiting inner ring provided with the limiting through hole, so that the connection between the protective outer ring and the limiting inner ring is more stable, and the limiting through hole can more accurately position the tensioning nut.
In one example, the number of the limiting through holes is the same as that of the elastic connecting pieces.
Drawings
The drawings described herein are only for assisting those skilled in the art in understanding the technical solutions of the present invention, and the exemplary embodiments of the present invention described in conjunction with the drawings are only for explaining the technical solutions of the present invention and do not constitute a limitation of the present invention. In the drawings:
fig. 1 is a sectional view of a tension nut positioning device for an endless-plate precast pile according to an embodiment of the present invention in a use state;
FIG. 2 is an enlarged schematic view of FIG. 1A;
FIG. 3 is a cross-sectional view taken at section B-B of FIG. 1;
FIG. 4 is a cross-sectional view of another embodiment taken at section B-B of FIG. 1.
List of reference numerals:
spacing inner ring 1, protection outer loop 2, elastic connecting piece 3, stretch-draw nut 4, spacing through-hole 5, fixed slot 6, screw thread 7, butt portion 8, stake end acute angle 9, trompil section 10, segmental arc 11, outer loop linkage segment 12, middle part linkage segment 13, inner ring linkage segment 14, no end plate precast pile 100, main muscle 101.
Detailed Description
In order to more clearly explain the overall concept of the utility model, the following detailed description is given by way of example in conjunction with the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "central," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the drawings for ease of description and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. In the description of the present specification, reference to the description of the terms "one aspect," "some aspects," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the aspect or example is included in at least one aspect or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same solution or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more aspects or examples.
As shown in fig. 1 to 4, the utility model provides a tensioning nut positioning device for an end-plate-free precast pile, which comprises a limiting inner ring 1, a protective outer ring 2, an elastic connecting piece 3 and a tensioning nut 4, wherein one end of the elastic connecting piece 3 is fixed on the inner wall of the protective outer ring 2, the other end of the elastic connecting piece is tangent to and fixed with the limiting inner ring 1, and the limiting inner ring 1 and the protective outer ring 2 are concentrically arranged and connected together through the elastic connecting piece 3; the limiting inner ring 1 is provided with a limiting through hole 5, and the tensioning nut 4 is fixed in the limiting through hole 5; the tensioning nut 4 is provided with a fixing groove 6, a thread 7 is arranged on the inner wall of one end of the tensioning nut 4, an abutting part 8 protruding out of the inner wall of the tensioning nut 4 is arranged on the other end of the tensioning nut, and the end part of the main rib can enter the tensioning nut 4 through the fixing groove 6 and abut against the abutting part 8. The tensioning nut positioning device for the end-plate-free precast pile is characterized in that a limiting inner ring 1 and a protecting outer ring 2 are connected into a concentric ring positioning device which is uniformly distributed in the circumferential direction through an elastic connecting piece 3, wherein the protecting outer ring 2 on the outer side can protect a pile end acute angle 9 and prevent the pile end acute angle 9 from being damaged; each tensioning nut 4 can be fixed in a limiting through hole 5 on the limiting inner ring 1, the tensioning nuts 4 can be fixed in a three-dimensional constrained mode and cannot rotate or axially move, so that when the tensioning screws are installed, a plurality of air cannons can be used for directly screwing a plurality of tensioning screws, the tensioning screws can be synchronously locked at one time, and the efficiency is very high; the fixing groove 6 on the tensioning nut 4 can make the pier head at the end of the main rib 101 conveniently enter the tensioning nut 4 and tightly abut against and fix the abutting part 8, so that the two can stably transmit force during tensioning.
In a particular embodiment, the resilient connecting element 3 gives the protective outer ring 2 a force away from the restraining inner ring 1. The elastic connecting piece 3 gives the protection outer ring 2 a force which deviates from the limit inner ring 1, namely the protection outer ring 2 is pushed to the outer side of the pile end plane. When the tensioning anchoring plate is installed, the protective outer ring 2 always supports against the inner side plane of the tensioning plate due to elasticity, and the phenomenon that the protective outer ring is separated from the tensioning plate when in tensioning sliding and cannot displace to protect the acute angle 5 of the pile end is avoided.
In a specific embodiment, the tensioning nut positioning device for the endless-plate precast pile further comprises a locking member, and the locking member is circumferentially fixed on the outer side surface of the tensioning nut 4 to lock the main bar 101 and the tensioning nut 4 in a state that the end of the main bar 101 extends into the tensioning nut 4. The retaining member can be set up to lock nut isotructure, and the intensity of stretch-draw nut 4 can be strengthened to the retaining member, avoids the tip of main muscle 101 to be pulled off.
In one embodiment, as shown in fig. 3, the inner limiting ring 1 is a steel stamping flange, and a plurality of limiting through holes 5 are uniformly formed on the steel stamping flange. The steel stamping flange can be directly used as the limit inner ring 1.
In a specific embodiment, as shown in fig. 4, the limiting inner ring 1 is composed of an opening section 10 and an arc section 11 which are arranged at an interval, the limiting through hole 5 is opened in the opening section 10, and the size of the outer edge of the opening section 10 is larger than that of the outer edge of the arc section 11. The steel stamping flange is of an equal-wall-thickness structure, and can also adopt a non-equal-wall-thickness structure, so that the used materials of the arc sections 11 used for connection between the hole-opening sections 10 can be reduced, and the manufacturing cost is reduced.
In one embodiment, as shown in fig. 3 to 4, the limiting through-holes 5 are provided as polygonal through-holes.
In one embodiment, as shown in fig. 1 to 2, the elastic connecting element 3 comprises an outer ring connecting section 12, a middle connecting section 13 and an inner ring connecting section 14 which are connected in sequence, the outer ring connecting section 12 is fixed on the inner wall of the protective outer ring 2, and the inner ring connecting section 14 is tangent to and fixed with the limit inner ring 1. The outer ring connecting section 12, the middle connecting section 13 and the inner ring connecting section 14 make the elastic connecting piece 3 in a Z-shaped structure, and the elastic connecting piece 3 has elasticity and gives an outward force to the protective outer ring 2.
In one embodiment, as shown in fig. 3 to 4, the inner ring connecting section 14 is fixed to the outer side of the position-limiting inner ring 1 provided with the position-limiting through hole 5. The inner ring connecting section 14 is fixed on the outer side of the limiting inner ring 1 provided with the limiting through hole 5, so that the connection between the protective outer ring 2 and the limiting inner ring 1 is more stable, and the limiting through hole 5 can more accurately position the tensioning nut 4.
In one embodiment, as shown in fig. 3 to 4, the number of the limiting through holes 5 is the same as the number of the elastic connection members 3.
When in use, firstly, the tensioning nut 4 is selected to be a multi-surface columnar tensioning nut, and the multi-surface columnar tensioning nut is uniformly and annularly distributed at two ends of the main rib 101 of the no-end plate precast pile 100; installing a plurality of tensioning nuts 4 in polygonal limiting through holes 5 which are uniformly distributed in an inner limiting ring 1 and fixing the tensioning nuts by spot welding, wherein the inner limiting ring 1 is a steel stamping flange which is 2-3mm thick and 4-5mm wider than the tensioning nuts 4 in diameter, and a plurality of polygonal limiting through holes 5 corresponding to the main ribs 101 are arranged on the flange; meanwhile, when the set of device is manufactured, the limit inner ring 1, the protection outer ring 2, the tensioning nut 4 and the elastic connecting piece 3 are respectively arranged in a customized die, and a welding point is fixed by an automatic multi-station spot welding machine in a spot welding mode.
When the tensioning plate is assembled, the tensioning screw penetrates through the tensioning anchor plates at the head and the tail to be connected to the tensioning nut 4, the air cannon trigger can quickly screw the tensioning screw, the tensioning nut 4 does not need to be worried about to rotate, and a group of tensioning screws in the whole annular direction can be synchronously screwed.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (9)
1. A tensioning nut positioning device for an end-plate-free precast pile is characterized by comprising a limiting inner ring, a protecting outer ring, an elastic connecting piece and a tensioning nut, wherein one end of the elastic connecting piece is fixed on the inner wall of the protecting outer ring, the other end of the elastic connecting piece is tangent to and fixed with the limiting inner ring, and the limiting inner ring and the protecting outer ring are concentrically arranged and are connected together through the elastic connecting piece;
the limiting inner ring is provided with a limiting through hole, and the tensioning nut is fixed in the limiting through hole; the tensioning nut is provided with a fixing groove, a thread is arranged on the inner wall of one end of the tensioning nut, the other end of the tensioning nut is provided with a butting part protruding out of the inner wall of the tensioning nut, and the end part of the main rib can enter the tensioning nut through the fixing groove and is butted with the butting part.
2. The endless-plate precast pile tensioning nut positioning device according to claim 1, wherein the resilient connector imparts a force to the protective outer ring away from the restraining inner ring.
3. The tensioning nut positioning device for the endless-plate precast pile according to claim 1, further comprising a locking member, wherein the locking member is circumferentially fixed to an outer side surface of the tensioning nut to lock the main rib and the tensioning nut in a state where an end portion of the main rib extends into the tensioning nut.
4. The device for positioning the tensioning nut of the endless plate precast pile according to claim 1, wherein the limiting inner ring is a steel stamping flange, and a plurality of limiting through holes are uniformly formed in the steel stamping flange.
5. The tensioning nut positioning device for the endless-plate precast pile according to claim 1, wherein the inner limiting ring is composed of an open hole section and an arc section which are arranged at an interval, the through limiting hole is opened in the open hole section, and the size of the outer edge of the open hole section is larger than that of the outer edge of the arc section.
6. The device for positioning tensioning nuts for the endless-plate precast pile according to claim 4 or 5, wherein the limiting through-holes are polygonal through-holes.
7. The tensioning nut positioning device for the endless-plate precast pile according to claim 1, wherein the elastic connecting member comprises an outer ring connecting section, a middle connecting section and an inner ring connecting section which are connected in sequence, the outer ring connecting section is fixed on the inner wall of the protection outer ring, and the inner ring connecting section is tangent to and fixed with the limiting inner ring.
8. The tensioning nut positioning device for the endless-plate precast pile according to claim 7, wherein the inner ring connecting section is fixed to an outer side of the limiting inner ring provided with the limiting through hole.
9. The tensioning nut positioning device for the endless-plate precast pile according to claim 1, wherein the number of the limiting through holes is the same as the number of the elastic connecting members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121140817.0U CN215758987U (en) | 2021-05-26 | 2021-05-26 | End-plate-free precast pile stretch-draw nut positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121140817.0U CN215758987U (en) | 2021-05-26 | 2021-05-26 | End-plate-free precast pile stretch-draw nut positioning device |
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| CN215758987U true CN215758987U (en) | 2022-02-08 |
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| CN202121140817.0U Active CN215758987U (en) | 2021-05-26 | 2021-05-26 | End-plate-free precast pile stretch-draw nut positioning device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115157436A (en) * | 2022-06-24 | 2022-10-11 | 山西路桥第八工程有限公司 | Tensioning device and tensioning process for precast pile |
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2021
- 2021-05-26 CN CN202121140817.0U patent/CN215758987U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115157436A (en) * | 2022-06-24 | 2022-10-11 | 山西路桥第八工程有限公司 | Tensioning device and tensioning process for precast pile |
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