CN219315712U - Mechanical connecting device of prestressed pipe pile - Google Patents
Mechanical connecting device of prestressed pipe pile Download PDFInfo
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- CN219315712U CN219315712U CN202223552725.0U CN202223552725U CN219315712U CN 219315712 U CN219315712 U CN 219315712U CN 202223552725 U CN202223552725 U CN 202223552725U CN 219315712 U CN219315712 U CN 219315712U
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- prestressed
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- mechanical connection
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- 210000002435 tendon Anatomy 0.000 claims abstract description 66
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 8
- 238000009417 prefabrication Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model provides a mechanical connecting device of a prestressed pipe pile, which is used for connecting an upper pipe pile and a lower pipe pile and comprises a positioning part, a connecting part and a locking unit, wherein the positioning part, the connecting part and the locking unit are preset at the end part of the lower pipe pile in sequence. The positioning part is preset at the end part of the lower tubular pile and is provided with a limiting part for limiting the lower prestressed tendons at the end part of the lower tubular pile from falling off; the positioning part is also provided with a containing cavity for containing the connecting part, the containing cavity is arranged above the limiting part, and the connecting part is arranged in the containing cavity to form the constraint on the upper prestressed tendons of the upper pipe pile; the locking unit is connected with the positioning part and used for preventing the upper prestressed tendons from falling off. According to the mechanical connecting device for the prestressed pipe pile, the upper pipe pile and the lower pipe pile are fixedly connected through the locking unit, the connecting part and the positioning part which are sequentially connected in the prefabrication mode of the lower pipe pile, so that the mechanical connecting device is simple in structure, easy to implement and good in fixing and connecting effect.
Description
Technical Field
The utility model relates to the technical field of pipe piles, in particular to a mechanical connecting device of a prestressed pipe pile. .
Background
The prestressed concrete pipe pile is used as a common component in the building industry, and is increasingly widely applied in various fields of industrial and civil buildings, municipal administration, metallurgy, ports, highways and the like. In the practical application construction process, a plurality of sections of pipe piles are generally connected together so as to meet the requirement of bearing capacity required by design.
The existing prestressed concrete pipe piles are generally spliced in the forms of welding, clamping and the like, or two or more sections of pipe piles are connected by adopting pipe pile connecting pieces. In the prior art, the welding time is long, and the welding quality requirement is not easy to guarantee. Therefore, the pile splicing method is widely used. However, the existing pipe pile clamping connection mode is complex in structure, various in parts and long in prefabrication time. The prefabricated parts which need to be assembled before construction are more, the assembly time is longer, and the manual investment is larger.
In addition, the existing clamping connecting piece is installed after the prefabricated pipe piles are completed, the situation that corresponding accessories cannot be installed exists, potential safety hazards exist, and the connecting effect between the pipe piles cannot be guaranteed.
Disclosure of Invention
In view of the above, the present utility model aims to provide a mechanical connection device for a prestressed pipe pile, which is capable of achieving quick installation by using a connection piece with a simple structure and has a good fixing connection effect.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
a mechanical connecting device of a prestressed pipe pile is used for connecting an upper pipe pile and a lower pipe pile and comprises a positioning part, a connecting part and a locking unit which are preset at the end part of the lower pipe pile in sequence;
the positioning part is preset at the end part of the lower tubular pile and is provided with a limiting part for limiting the lower prestressed tendons at the end part of the lower tubular pile from falling off;
the positioning part is also provided with a containing cavity for containing the connecting part, the containing cavity is arranged above the limiting part, and the connecting part is arranged in the containing cavity to form the constraint of the upper prestressed tendons of the upper tubular pile;
the locking unit is connected with the positioning part and used for preventing the upper prestressed tendons from falling off.
Further, the limiting part is specifically a step groove, one end of the large section of the step groove is close to the accommodating cavity, and the end part of the lower prestressed tendon is arranged in the step groove of the large section.
Further, the accommodating cavity and the step groove are arranged in a step mode.
Further, one end of the connecting part, which is close to the locking unit, is provided with a first conical surface;
the locking unit is provided with a second conical surface, and when the upper prestressed tendon is tensioned, the second conical surface is abutted with the first conical surface so as to limit the connecting portion.
Further, the locking unit is in threaded connection with the positioning part.
Further, the connecting part is further provided with a third conical surface, and the third conical surface is connected with the first conical surface and gradually expands towards the direction of the upper tubular pile.
Furthermore, the connecting part is provided with a clamping part near one end of the upper pipe pile, and the upper prestressed tendons are limited to be separated from the connecting part through the clamping of the clamping part.
Further, the clamping part is provided with dividing grooves distributed along the radial direction,
the dividing groove is enlarged along with the insertion of the upper prestressed rib.
Furthermore, the clamping part is also provided with grooves which are circumferentially distributed, and the dividing grooves are arranged at the upper middle part of the grooves.
Further, the connecting part is provided with a protruding part matched with the accommodating cavity.
Compared with the prior art, the utility model has the following advantages:
according to the mechanical connecting device for the prestressed pipe pile, the positioning part prefabricated on the lower pipe pile is arranged, so that the connecting part can be accommodated while the lower prestressed rib is positioned. The upper prestressed tendons are fixed on the connecting parts through the connection of the connecting parts, and the connecting parts are prevented from falling out of the lower tubular piles through the locking of the locking units. The mechanical connecting device of the prestressed pipe pile is simple in structure, easy to operate and capable of achieving rapid installation, avoiding the process of installing accessories again by prefabricating ten thousand pipe piles, and guaranteeing good fixed connection effect.
Through the location of connecting portion to last prestressing tendons, the location of locating part to prestressing tendons down, make last prestressing tendons and lower prestressing tendons arrange perpendicularly, can guarantee that last tubular pile and lower tubular pile are vertical to be connected, reduce dislocation error, improve aesthetic property and atress effect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
fig. 1 is a schematic cross-sectional structure of a mechanical connection device of a prestressed pipe pile according to an embodiment of the present utility model;
FIG. 2 is a schematic structural view of a connecting portion according to an embodiment of the utility model;
fig. 3 is a schematic view illustrating an installation structure of a mechanical connection device of a prestressed pipe pile according to an embodiment of the present utility model;
fig. 4 is a schematic cross-sectional structure of a mechanical connection device of a prestressed pipe pile according to a second embodiment of the present utility model;
fig. 5 is a schematic view of an installation structure of a mechanical connection device of a prestressed pipe pile according to a second embodiment of the present utility model.
Reference numerals illustrate:
1. a positioning part; 2. a connection part; 3. a locking unit; 4. a pre-stressing tendon is arranged on the steel plate; 5. a lower prestressed tendon; 6. loading a tubular pile; 7. a lower pipe pile; 401. a front end;
101. a receiving chamber; 102. a step groove; 103. a first step surface;
201. a receiving area; 202. a clamping part; 203. a first conical surface; 204. a dividing groove; 205. a groove; 206. a protruding portion;
301. a second conical surface; 302. a fourth conical surface;
2021. a through hole; 2022. and a third conical surface.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "back", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. In addition, the terms "first," "second," are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, in the description of the present utility model, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.
The utility model will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
The present embodiment relates to a mechanical connection device for a prestressed pipe pile, which is used for connecting an upper pipe pile 6 and a lower pipe pile 7, and comprises a positioning part 1, a connecting part 2 and a locking unit 3 which are preset at the end part of the lower pipe pile 7 in sequence. The positioning part 1 is preset at the end part of the lower tubular pile 7, and the positioning part 1 is provided with a limiting part for limiting the lower prestressed tendons 5 at the end part of the lower tubular pile 7 from falling off; the positioning part 1 is also provided with a containing cavity 101 for containing the connecting part 2, the containing cavity 101 is arranged above the limiting part, the connecting part 2 is arranged in the containing cavity 101, and the constraint of the upper prestressed tendons 4 of the upper pipe pile 6 is formed; the locking unit 3 is connected with the positioning part 1 and is used for preventing the upper prestressed tendons 4 from falling off.
The mechanical connection device for the prestressed pipe pile of the embodiment can accommodate the connection part 2 while positioning the lower prestressed tendons 5 by providing the positioning part 1 prefabricated on the lower pipe pile 7. The upper prestressed tendons 4 are fixed on the connecting portion 2 through the connection of the connecting portion 2, and the connecting portion 2 is prevented from falling out of the lower pipe pile 7 through the locking of the locking unit 3. The mechanical connecting device of the prestressed pipe pile is simple in structure, easy to operate and capable of achieving rapid installation, avoiding the process of installing accessories again by prefabricating ten thousand pipe piles, and guaranteeing good fixed connection effect.
Based on the above overall description, as an exemplary structure of the mechanical connection device of the prestressed pipe pile according to the present embodiment, as shown in fig. 1, the upper prestressed tendons 4 and the lower prestressed tendons 5 of the present embodiment are all threaded steels used in the prior art, and the threaded steel in the present embodiment is similar to a bolt structure, and has a front end 401 with one end protruding, and is formed by upsetting with special equipment, the rear portion of the front end 401 is a vertical bar-shaped steel bar, and the upper prestressed tendons 4 and the lower prestressed tendons 5 may be single steel bar or a winding of multiple steel bars.
The positioning part 1 in this embodiment is a positioning nut, and plays a role in positioning the lower tendon 5. As shown in fig. 1 and 3, the positioning nut is a cylinder with a step to facilitate the fixation of the positioning nut in the lower pipe pile 7.
In order to fix the position of the lower tendon 5 in the positioning portion 1, a limiting portion, specifically a step groove 102, is provided at the lower end of the positioning portion 1, one end of the large section of the step groove 102 is close to the accommodating cavity 101, and the end of the lower tendon 5 is provided in the step groove 102 of the large section. As a specific embodiment, as shown in fig. 1 and 3, the limiting portion of the present embodiment is a step groove 102 formed at one end of the positioning portion 1 near the lower tendon 5, and the cross section thereof gradually decreases from top to bottom, so that the front end 401 of the lower tendon can be clamped at the connection portion 2 of the step groove 102.
Further, in the present embodiment, the accommodation chamber 101 is arranged in steps with the stepped groove 102. As also shown in fig. 1, the accommodating chamber 101 is a circular hole formed at the upper end of the positioning portion 1, which has a diameter larger than that of the above-mentioned stepped groove 102, and communicates with one end of the large cross section of the stepped groove 102 to form a first stepped surface 103. The bottom surface of the positioning part 1 is lapped on the first step surface 103 and is separated from the lower prestressed tendons 5 below by a distance.
In order to accommodate the upper tendon 4, as shown in fig. 1, a receiving area 201 is formed at the bottom end of the connecting portion 2, the receiving area 201 is a circular blind hole formed at the bottom of the connecting portion 2, and the receiving area 201 is used for receiving the front end 401 of the upper tendon 4. Furthermore, the end of the connecting portion 2, which is close to the upper pipe pile 6, is provided with a clamping portion 202, and the upper tendon 4 is restricted from coming out of the connecting portion 2 by the clamping of the clamping portion 202.
As shown in fig. 1 and 3, the clamping portion 202 of the present embodiment is formed above the accommodating area 201, the clamping portion 202 is provided with a through hole 2021 communicating with the accommodating area 201, the diameter of the through hole 2021 is smaller than that of the front end 401 of the upper tendon 4, so as to form a plane capable of clamping the front end 401 of the upper tendon 4, and the through hole 2021 can pass through the reinforcing steel bar portion at the rear of the front end 401 of the upper tendon 4.
In order to prevent the positioning part 1 from falling out of the lower tubular pile 7, one end of the connecting part 2, which is close to the locking unit 3, is provided with a first conical surface 203; the locking unit 3 has a second conical surface 301, and when the upper tendon 4 is tightened, the second conical surface 301 abuts against the first conical surface 203 to form a limit for the connection portion 2. As a specific embodiment, as shown in fig. 1 and 3, the first tapered surface 203 at the upper end of the connecting portion 2 of the present embodiment is disposed in parallel with and spaced apart from the second tapered surface 301 of the locking unit 3. The first conical surface 203 is a circumferential outer chamfer formed at the upper end of the connecting portion 2, and the second conical surface 301 is an inner chamfer with an eight-shaped cross section on the locking unit 3.
When the upper prestressed tendons 4 are inserted into the positioning portions 1, the tight joint of the connecting faces cannot be ensured due to the machining errors of the end faces of the upper pipe piles 6 and the lower pipe piles 7. The abutting surface of the positioning part 1 and the locking unit 3 is provided with a certain distance, so that the small-distance interference of the upper pipe pile 6 and the lower pipe pile 7 caused by machining errors can be allowed, and the connection of the upper pipe pile 6 and the lower pipe pile 7 has a certain prestress.
In addition, as a preferred embodiment, as shown in fig. 1, the locking unit 3 of the embodiment has a circular shaft structure with steps, and as shown in fig. 3, the diameter of the upper end of the locking unit is smaller, so that when the lower pipe pile 7 is prefabricated, the concrete structure forms a clamping stagnation for the locking unit 3, thereby enabling the mechanical connecting device of the prestressed pipe pile to be integrally formed with the lower pipe pile 7 when the lower pipe pile 7 is prefabricated, avoiding the assembly after the prefabrication of the lower pipe pile 7, and reducing the assembly process and the labor input cost.
In order to facilitate the fixation of the locking unit 3, as a specific embodiment, as shown in fig. 1, the locking unit 3 is screwed with the positioning portion 1. In this embodiment, the locking unit 3 is sleeved on the upper end of the positioning portion 1 and is fixed to the positioning portion 1 through threaded connection. Of course, in other embodiments, the lock nut may be fixed to the positioning portion 1 by means of a snap-fit, welding, or the like.
In order to insert the upper tendon 4 into the joint section 2, the stopper 202 in this embodiment has dividing grooves 204 distributed in the radial direction, and the dividing grooves 204 are enlarged with the insertion of the upper tendon 4. In a specific structure, as shown in fig. 2, the dividing grooves 204 of the present embodiment extend from the outer periphery of the connecting portion 2 to the through holes 2021, and are four evenly distributed in the radial direction. So that the upper tendon 4 can be directly inserted into the positioning portion 1 to be clamped and positioned by the clamping portion 202. When the upper tendon 4 is pulled, the second conical surface 301 is pressed against the first conical surface 203, and the split groove 204 of the connecting portion 2 cannot be expanded and deformed by adopting the conical surface pressing method, so as to avoid the first tendon from falling out.
Of course, in other embodiments, in order to insert the upper tendon 4 from above the connecting portion 2, the present embodiment uses a special guiding tool to guide, and a positioning nut with a similar structure as the positioning portion 1 may be prefabricated on the upper pipe pile 6 to guide.
In addition, the connecting portion 2 of the present embodiment further has a third taper surface 2022, and the third taper surface 2022 is connected to the first taper surface 203 and gradually expands toward the upper pipe pile 6. As shown in fig. 1 to 3, in the present embodiment, the third taper surface 2022 is connected to the through hole 2021 of the connecting portion 2, and is inverted funnel-shaped toward the upper pipe pile 6. So arranged, the front end 401 of the upper tendon 4 is guided, which facilitates the insertion of the upper tendon 4.
Furthermore, as shown in fig. 1, in order to further guide the upper tendon 4, the locking unit 3 further has a fourth tapered surface 302 connected to the first tapered surface 203, the fourth tapered surface 302 gradually expands upward along the upper end of the first tapered surface 203, an inverted funnel shape is formed, and the diameter of the connection between the fourth tapered surface 302 and the third tapered surface 2022 is slightly larger than the diameter of the front end 401 of the upper tendon 4. The fourth tapered surface 302 is provided to form a pre-guide for the upper tendon 4, so that the upper tendon 4 can be vertically inserted into the stopper 202.
Still as shown in fig. 1, the locking unit 3, the connecting portion 2 and the positioning portion 1 of this embodiment are concentrically arranged, and through the positioning of the connecting portion 2 to the upper tendon 4, the positioning portion 1 positions the lower tendon 5, so that the upper tendon 4 and the lower tendon 5 are vertically arranged, vertical connection of the upper pipe pile 6 and the lower pipe pile 7 can be ensured, dislocation errors are reduced, and aesthetic property and stress effect are improved.
In order to facilitate the insertion of the upper tendon 4 into the connecting portion 2, the clamping portion 202 of this embodiment further has grooves 205 circumferentially distributed, and the dividing grooves 204 are provided at the upper middle portion of the grooves 205. As a specific embodiment, as shown in fig. 2, the grooves 205 of the present embodiment are uniformly circumferentially distributed around the circumference of the receiving area 201. The cross section of the groove 205 is formed in a rectangular structure, and of course, a circular, polygonal, or the like structure may be used.
As shown in fig. 2, the dividing groove 204 is disposed at the upper portion of the groove 205 and is communicated with the groove 205, when the upper tendon 4 is inserted into the connecting portion 2, the groove 205 can facilitate expansion of the dividing groove 204 to expand and deform the clamping portion 202, and when the front end 401 of the upper tendon 4 is completely inserted into the clamping portion, the dividing groove 204 is retracted to the initial position, so as to form clamping restriction on the upper tendon 4.
Furthermore, the connecting portion 2 of the present embodiment has a protruding portion 206 that is adapted to the accommodation chamber 101. In a specific structure, as shown in fig. 1 to 3, the lower end of the connecting portion 2 of the present embodiment has a protruding portion 206 protruding along the circumferential edge, and the protruding portion 206 has the same diameter as the accommodating chamber 101. The receiving cavity 101 is capable of positioning the connection portion 2 circumferentially so as to achieve the above-mentioned concentric arrangement of the connection portion 2 and the positioning portion 1.
The mechanical connection device of the prestressed pipe pile of the embodiment is characterized in that the locking unit 3, the connecting part 2 and the positioning part 1 which are sequentially connected are prefabricated on the lower pipe pile 7, and the connecting part 2 and the positioning part 1 are used for limiting the upper prestressed rib 4 and the lower prestressed rib 5 to move up and down, so that the upper pipe pile 6 and the lower pipe pile 7 are connected and fixed. The mechanical connecting device of the prestressed pipe pile is simple in structure, easy to implement and good in fixed connection effect.
Example two
As a specific embodiment, as shown in fig. 4 and 5, the locking unit 3 of the mechanical connection device of the prestressed pipe pile has an external thread, the positioning part 1 has an internal thread, and the locking unit 3 is in threaded connection with the positioning part 1. And the upper plane of the locking unit 3 of the present embodiment is flush with the positioning portion 1.
So set up, the mechanical connection device of this prestressing force tubular pile of being convenient for wholly presets on lower tubular pile 7, and the mould structure when simplifying lower tubular pile 7 prefabrication.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. A mechanical connection device of a prestressed pipe pile, which is used for connecting an upper pipe pile (6) and a lower pipe pile (7), and is characterized in that: comprises a positioning part (1), a connecting part (2) and a locking unit (3) which are sequentially preset at the end part of the lower tubular pile (7);
the positioning part (1) is preset at the end part of the lower tubular pile (7), and the positioning part (1) is provided with a limiting part for limiting the lower prestressed tendons (5) at the end part of the lower tubular pile (7) from falling off;
the positioning part (1) is also provided with a containing cavity (101) for containing the connecting part (2), the containing cavity (101) is arranged above the limiting part, and the connecting part (2) is arranged in the containing cavity (101) to form the constraint of the upper prestressed tendons (4) of the upper tubular piles (6);
the locking unit (3) is connected with the positioning part (1) and used for preventing the upper prestressed tendons (4) from falling off.
2. The mechanical connection device of a prestressed pipe pile according to claim 1, wherein:
the limiting part is specifically a step groove (102), one end of a large section of the step groove (102) is close to the accommodating cavity (101), and the end part of the lower prestressed tendon (5) is arranged in the step groove (102) of the large section.
3. A mechanical connection device for a prestressed pipe pile according to claim 2, wherein:
the accommodating cavity (101) and the step groove (102) are arranged in a step mode.
4. A mechanical connection device for a pre-stressed pipe pile according to claim 3, wherein:
one end of the connecting part (2) close to the locking unit (3) is provided with a first conical surface (203);
the locking unit (3) is provided with a second conical surface (301), and when the upper prestressed tendon (4) is tensioned, the second conical surface (301) is abutted with the first conical surface (203) so as to form limit on the connecting portion (2).
5. The mechanical connection device of a prestressed pipe pile according to claim 1, wherein:
the locking unit (3) is in threaded connection with the positioning part (1).
6. The mechanical connection device of a prestressed pipe pile of claim 4, wherein:
the connecting part (2) is also provided with a third conical surface (2022), and the third conical surface (2022) is connected with the first conical surface (203) and gradually expands towards the direction of the upper tubular pile (6).
7. The mechanical connection device of a prestressed pipe pile according to claim 1, wherein:
one end of the connecting portion (2) close to the upper tubular pile (6) is provided with a clamping portion (202), the clamping portion (202) is arranged in the center of the connecting portion (2), and the upper prestressed tendons (4) are limited to be separated from the connecting portion (2) through clamping of the clamping portion (202).
8. The mechanical connection device of a prestressed pipe pile of claim 7, wherein:
the clamping part (202) is provided with dividing grooves (204) distributed along the radial direction,
the dividing groove (204) expands with the insertion of the upper tendon (4).
9. The mechanical connection device of a prestressed pipe pile of claim 8, wherein:
the clamping part (202) is also provided with grooves (205) which are circumferentially distributed, and the dividing grooves (204) are formed in the middle upper part of the grooves (205).
10. The mechanical connection device of a prestressed pipe pile according to claim 1, wherein:
the connecting part (2) is provided with a protruding part (206) matched with the accommodating cavity (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223552725.0U CN219315712U (en) | 2022-12-29 | 2022-12-29 | Mechanical connecting device of prestressed pipe pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223552725.0U CN219315712U (en) | 2022-12-29 | 2022-12-29 | Mechanical connecting device of prestressed pipe pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219315712U true CN219315712U (en) | 2023-07-07 |
Family
ID=87034770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223552725.0U Active CN219315712U (en) | 2022-12-29 | 2022-12-29 | Mechanical connecting device of prestressed pipe pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219315712U (en) |
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2022
- 2022-12-29 CN CN202223552725.0U patent/CN219315712U/en active Active
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A mechanical connection device for prestressed pipe piles Granted publication date: 20230707 Pledgee: Industrial and Commercial Bank of China Limited Langfang Jiefang Branch Pledgor: LANGFANG YUZELI BUILDING MATERIAL TECHNOLOGY Co.,Ltd. Registration number: Y2024980007702 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20230707 Pledgee: Industrial and Commercial Bank of China Limited Langfang Jiefang Branch Pledgor: LANGFANG YUZELI BUILDING MATERIAL TECHNOLOGY Co.,Ltd. Registration number: Y2024980007702 |