CN117509408A - Precast tubular pile hoisting accessory - Google Patents
Precast tubular pile hoisting accessory Download PDFInfo
- Publication number
- CN117509408A CN117509408A CN202311767715.5A CN202311767715A CN117509408A CN 117509408 A CN117509408 A CN 117509408A CN 202311767715 A CN202311767715 A CN 202311767715A CN 117509408 A CN117509408 A CN 117509408A
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- CN
- China
- Prior art keywords
- threaded ring
- tubular pile
- precast tubular
- rod
- lifting device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 230000007246 mechanism Effects 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 4
- 229920002457 flexible plastic Polymers 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 239000002699 waste material Substances 0.000 description 4
- 238000003912 environmental pollution Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
- B66C1/44—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
- B66C1/54—Internally-expanding grippers for handling hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
Abstract
The invention discloses a precast tubular pile lifting device, which comprises: the device comprises a rigid sleeve, a first threaded ring, a screw, a second threaded ring, an upper supporting rod, a lower supporting rod, a supporting plate and a positioner. The rigid sleeve and the first threaded ring are sleeved on the upper portion of the vertically arranged screw rod, and the lower end of the rigid sleeve is fixedly connected with the upper end of the first threaded ring. The first thread ring is in threaded connection with the screw rod; the second threaded ring is in threaded connection with the screw rod and is located below the first threaded ring, and the threads among the first threaded ring, the second threaded ring and the screw rod are opposite in rotation direction. The upper end of the upper support rod is rotationally connected with the first threaded ring, the lower end of the lower support rod is rotationally connected with the second threaded ring, and the lower end of the upper support rod and the upper end of the lower support rod are rotationally connected with the support plate; the locator is fixed at the lower end of the screw rod. The hoisting device disclosed by the invention is not only firmer and more reliable in fixing the precast tubular pile, but also can reduce deviation and dislocation.
Description
Technical Field
The invention relates to the technical field of precast tubular piles, in particular to a precast tubular pile lifting device.
Background
The information disclosed in the background of the invention is only for enhancement of understanding of the general background of the invention and is not necessarily to be taken as an admission or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Along with the crossing type progress of the foundation construction of China, the discharge amount of the construction waste is increased year by year, however, most of the treatment modes of the construction waste have a plurality of defects, the construction waste is easy to collapse when simply stacked in open air or buried, the land resource is wasted, the personal and property safety is endangered, and serious environmental pollution is caused. Meanwhile, due to random exploitation of materials such as sand and stone and the like for a long time, the problems of resource exhaustion, landslide, river bed diversion and the like are caused, and the natural environment is seriously damaged. The construction solid waste is improved through the soil curing agent, and then the improved soil is prefabricated into piles for engineering construction, so that the problems of environmental pollution, occupied space and the like caused by stacking or disposing the construction solid waste can be reduced, waste is changed into valuable, the materials are locally obtained, the engineering construction cost is saved, and the method has important significance in protecting the environment and realizing sustainable development of the construction industry.
The prefabricated pipe pile is a prefabricated pile type commonly used in the engineering construction at the present stage, has the characteristics of high bearing capacity, quick and convenient construction, small environmental pollution, reliable pile forming quality, good comprehensive technical and economic benefits and the like, and is widely applied to engineering. However, in the construction process, the conventional precast tubular pile hoisting equipment mostly adopts an air bag type, namely: firstly, the air bag is inserted into the inner diameter of the precast tubular pile, the air bag is inflated to increase friction between the air bag and the precast tubular pile, then the pile body is moved, but the air bag is easy to leak air and the like, the precast tubular pile can fall off in the moving process, and the pile body is broken and simultaneously the safety of constructors is also easily endangered. In addition, the traditional hoisting device also has the problems that the size of the prefabricated pipe pile cannot be adjusted and the prefabricated pipe pile cannot be accurately positioned, the stacked prefabricated pipe piles are easy to generate dislocation deviation, and the overall stability is influenced.
Disclosure of Invention
The invention provides the precast tubular pile lifting device which is not only suitable for lifting precast tubular piles with different pipe diameters, but also is more firm and reliable in fixing the precast tubular piles, and can reduce deviation dislocation and improve the overall stability of formed pile bodies. Specifically, the technical scheme of the invention is as follows.
A precast tubular pile lifting device, comprising: the device comprises a rigid sleeve, a first threaded ring, a screw, a second threaded ring, an upper supporting rod, a lower supporting rod, a supporting plate and a positioner. Wherein: the rigid sleeve and the first threaded ring are sleeved on the upper portion of the screw rod which is vertically arranged, the lower end of the rigid sleeve is fixedly connected with the upper end of the first threaded ring, and the first threaded ring is in threaded connection with the screw rod. The second threaded ring is in threaded connection with the screw rod and is positioned below the first threaded ring, and the threaded directions among the first threaded ring, the second threaded ring and the screw rod are opposite so as to enable the first threaded ring and the second threaded ring to be close to or far away from each other by driving the screw rod to rotate. The upper end of the upper supporting rod is rotationally connected with the first threaded ring, the lower end of the lower supporting rod is rotationally connected with the second threaded ring, and the lower end of the upper supporting rod and the upper end of the lower supporting rod are rotationally connected with the supporting plate. The upper shaft of the screw is symmetrically provided with a plurality of telescopic positioning mechanisms consisting of an upper supporting rod, a lower supporting rod and a supporting plate. The locator is an inverted cone and is fixed at the lower end of the screw rod.
Further, a handle is fixed on the outer side wall of the rigid sleeve so as to be connected with a rope and the like to hoist the whole device. Optionally, the handle includes any one of a hook body, a ring body, and the like.
Further, in each telescopic positioning mechanism, the number of the upper support rods and the number of the lower support rods are two, the two upper support rods are symmetrically distributed on two sides of the first threaded ring, and the two lower support rods are symmetrically distributed on two sides of the second threaded ring. The two upper support rods and the lower support rods are both rotationally connected with the support plate, and the telescopic positioning mechanism has higher stability.
Further, the backup pad is vertical setting and outwards convex arc to laminate better with prefabricated tubular pile inner wall, increase area of contact.
Further, the outer side wall of the supporting plate is provided with an anti-slip pad so as to increase friction force between the anti-slip pad and the inner wall of the prefabricated pipe pile. Optionally, the material of the anti-slip pad comprises any one of rubber, flexible plastic and the like.
Further, the supporting plate is connected with the upper supporting rod and the lower supporting rod through the base plate and the connecting column. Wherein: the base plate is vertically arranged, and the lower end of the upper supporting rod and the upper end of the lower supporting rod are both rotationally connected with the base plate. And two ends of the connecting column are fixedly connected with the base plate and the supporting plate respectively.
Further, at least two groups of telescopic positioning mechanisms are arranged along the height direction of the screw, and each group of telescopic positioning mechanisms corresponds to one first threaded ring and one second threaded ring. The first threaded rings of the telescopic positioning mechanisms are connected through rigid connecting rods, so that the telescopic positioning mechanisms synchronously move.
Further, the rigid connecting rods are positioned on the outer sides of the upper supporting rods and the lower supporting rods and are parallel to the screw rods, so that synchronous movement of each telescopic positioning mechanism can be achieved, and the telescopic action of the upper supporting rods and the lower supporting rods is not influenced.
Further, the locator is detachably connected with the screw rod to replace locators with different specifications, so that the hoisting and positioning device is suitable for hoisting and positioning of different precast tubular piles.
Compared with the prior art, the invention has at least the following beneficial technical effects: the prefabricated pipe pile lifting device fully utilizes the characteristic that the prefabricated pipe pile for construction has a through hole, and is provided with the telescopic positioning mechanism capable of controlling the telescopic movement through the rotating screw rod, so that the connection between the lifting device and the prefabricated pipe pile can be realized from the inner wall of the through hole of the prefabricated pipe pile. In addition, the bottom end of the screw rod is connected with the inverted cone-shaped positioner, so that when stacking and installing among the prefabricated pipe piles are carried out, the hoisted pipe piles can be more accurately aligned with the lower prefabricated pipe piles through the positioner in the upper port of the lower prefabricated pipe piles, deviation dislocation of formed pile bodies is obviously reduced, and the overall stability of the formed pile bodies is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
Fig. 1 is a schematic structural view of a precast tubular pile lifting device in the following embodiment.
FIG. 2 is a schematic view of the structure of the screw in the following examples.
Fig. 3 is a schematic structural diagram of a telescopic positioning mechanism according to the following embodiment.
Fig. 4 is a schematic view showing a use state of the precast tubular pile lifting apparatus in the following embodiment.
Fig. 5 is a schematic structural view of a hoisting device for hoisting a precast tubular pile in the following embodiment.
The labels in the figures represent: 1-rigid sleeve, 2-first screw thread ring, 3-screw rod, 4-second screw thread ring, 5-upper support pole, 6-lower support pole, 7-backup pad, 8-locator, 9-rigid connecting rod, 10-precast tubular pile, 11-stake hole, 12-rope, 101-handle, 701-slipmat, 702-base plate, 703-spliced pole.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is intended to include the plural unless the context clearly indicates otherwise. Furthermore, it will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or groups thereof.
For convenience of description, the words "upper", "lower", "left" and "right" in the present invention, if they mean only that the directions are consistent with the upper, lower, left, and right directions of the drawings per se, and do not limit the structure, only for convenience of description and simplification of the description, but do not indicate or imply that the apparatus or element to be referred to needs to have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. The precast tubular pile lifting device of the present invention will be further described with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 5, there is illustrated a precast tubular pile lifting apparatus including: the device comprises a rigid sleeve 1, a first threaded ring 2, a screw 3, a second threaded ring 4, an upper supporting rod 5, a lower supporting rod 6, a supporting plate 7 and a positioner 8. Specifically: the inner wall of the rigid sleeve 1 is smooth, and the inner wall of the first threaded ring 2 is provided with threads. The rigid sleeve 1 and the first threaded ring 2 are sleeved on the upper portion of the screw rod 3 in vertical arrangement, the lower end of the rigid sleeve 1 is fixedly connected with the upper end face of the first threaded ring 2 in a welding mode, and the first threaded ring 2 is in threaded connection with the screw rod 3. It will be appreciated that instead of the structure formed by the rigid sleeve 1 and the first threaded ring 2, a tube could be used, with threads on the inner wall of the lower port of the tube, so that the tube is screwed with the screw 3.
The inner wall of the second threaded ring 4 is provided with threads which are sleeved on the screw rod 3 and are in threaded connection with the screw rod 3, the second threaded ring 4 is positioned below the first threaded ring 2, and the threads of the first threaded ring 2 and the second threaded ring 4 are opposite in rotation direction, or the threads of the parts where the first threaded ring 2 and the second threaded ring 4 are positioned on the screw rod 3 are opposite in rotation direction, so that the first threaded ring 2 and the second threaded ring 4 are mutually close to or far away from each other by driving the screw rod 3 to rotate.
The upper end of the upper supporting rod 5 is hinged with the outer side wall of the first threaded ring 2, the lower end of the lower supporting rod 6 is hinged with the outer side wall of the second threaded ring 4, and the lower end of the upper supporting rod 5 and the upper end of the lower supporting rod 6 are both hinged with the side wall of the vertically arranged supporting plate 7. The two upper support rods 5 are symmetrically distributed on two sides of the first threaded ring 2, the two lower support rods 6 are symmetrically distributed on two sides of the first threaded ring 2, and the upper support rods 5, the lower support rods 6 and the support plates 7 form a telescopic positioning mechanism together. The screw 3 is axially symmetrically provided with a plurality of groups of telescopic positioning mechanisms consisting of an upper supporting rod 5, a lower supporting rod 6 and a supporting plate 7. The locator 8 is an inverted cone and is fixed at the lower end of the screw 3.
It should be understood that the upper and lower support rods 5 and 6 may be directly connected to the support plate 7, or may be indirectly connected to the support plate 7 through other components, so that the support plate 7 is separately extended to the outside, so as to make contact with the inner wall of the precast tubular pile 10 during the hoisting process more closely. For example, referring to fig. 1 and 4, the support plate 7 is connected to the upper and lower support bars 5 and 6 through a base plate 702 and a connection column 703. Wherein: the base plate 702 is vertically arranged, and the lower end of the upper supporting rod 5 and the upper end of the lower supporting rod 6 are hinged with the side wall of the base plate 702. Both ends of the connecting column 703 are fixedly connected to the base plate 702 and the support plate 7, respectively. This structure helps to prevent the rotation of the upper and lower support rods 5, 6 when they are directly connected to the support plate 7 from being hindered under the influence of the precast pile 10, for example, the lower ends of the support rods 5 and the upper ends of the lower support rods 6 contact the inner wall of the precast pile 10, thereby preventing the support plate 7 from being effectively contacted with the inner wall of the precast pile 10, resulting in unstable fixation of the precast pile 10. And the connecting posts 703 leave more space behind the support plate 7 to accommodate the ends of the support rods 5 and the lower support rods 6, so that the support plate 7 is individually protruded to the outside, thereby making contact with the inner wall of the precast pile 10 more compact.
Referring to fig. 4 and 5, in use, the rope 12 of the crane is connected to the lifting means of this embodiment, and then lifted and extended into the cavity of the precast pile 10 from its upper end and the retainer 8 is extended below the lower end of the precast pile 10. And then the screw rod 3 is rotated from the upper end of the screw rod 3 by using a driving device or a tool, so that the first threaded ring 2 and the second threaded ring 4 are close to each other, the upper support rod 5 and the lower support rod 6 are extended outwards, the support plate 7 is gradually extruded onto the inner wall of the precast tubular pile 10, and the fixed connection between the hoisting device and the precast tubular pile 10 is realized. The precast tubular pile 10 is then hoisted into a pile hole 11 which is drilled in advance in the foundation. And then the screw 3 is rotated again by a driving device or a tool direction to enable the supporting plate 7 to be separated from contact with the inner wall of the precast tubular pile 10, and then the hoisting device is pulled out of the precast tubular pile 10 by a crane, so that the installation of one precast tubular pile 10 can be completed. Then, other precast tubular piles 10 are sequentially stacked and installed in the pile holes 11 by adopting the same method, and the specification is that when another precast tubular pile 10 is stacked on one precast tubular pile 10 below, the precast tubular pile 10 can be firstly inserted into the upper port of one precast tubular pile 10 below due to the existence of the positioner 10, so that the lower direction of the precast tubular pile 10 above is positioned, the precast tubular piles 10 can be aligned to places more accurately, the deviation dislocation of the formed pile body is obviously reduced, and the integral stability of the formed pile body is improved. It should be appreciated that the diameter of the top surface of the retainer 10 should be slightly smaller than the inner diameter of the precast tubular piles 10 to minimize the offset misalignment between the upper and lower precast tubular piles 10. Meanwhile, the precast tubular pile 10 for fully utilizing construction of the precast tubular pile lifting device of the embodiment has the characteristic of penetrating through holes, and the telescopic positioning mechanism capable of controlling the telescopic screw rod to be telescopic is designed, so that the connection of the lifting device and the precast tubular pile 10 can be realized from the inner wall of the through hole of the precast tubular pile 10, the lifting device is not only suitable for lifting precast tubular piles 10 with different pipe diameters, but also is more firm and reliable in fixing the precast tubular pile 10, and the problem that the precast tubular pile 10 falls off in the moving process due to the fact that the traditional air bag type lifting device is easy to leak can be well avoided.
In another embodiment, referring to fig. 1, 4 and 5, a handle 101 is fixed on the outer side wall of the rigid sleeve 1 of the precast pile lifting device in the above embodiment, and the handle 10 may be a hook, a loop body, or the like, so as to be connected with the rope 12 to lift the whole device. The handle 101 may be welded to the rigid sleeve 1 or may be fixed to the rigid sleeve 1 in any other suitable manner.
In a more preferred embodiment, referring to fig. 1, the support plate 7 of the precast pile lifting device in the foregoing embodiment is an arc plate that is vertically disposed and protrudes outwards, so as to better fit with the inner wall of the precast pile 10, increase the contact area, and improve the firmness between the support plate 7 and the precast pile 10.
In a more preferred embodiment, referring to fig. 1 and 3, the outer side wall of the support plate 7 of the precast pile lifting device of the above embodiment is provided with a non-slip pad 701, and the non-slip pad 701 may be made of rubber, flexible plastic, etc. to increase friction with the inner wall of the precast pile 10, further improve the firmness between the support plate 7 and the precast pile 10, and help to prevent the precast pile 10 from sliding down during the lifting process.
In a more preferred embodiment, referring to fig. 1 and 3, two sets of telescopic positioning mechanisms are provided along the height direction of the screw 3, and each set of telescopic positioning mechanisms corresponds to one first threaded ring 2 and one second threaded ring 4. The first threaded rings 2 of the telescopic positioning mechanisms are connected through the rigid connecting rods 9, and the rigid connecting rods 9 are positioned on the outer sides of the upper supporting rods 5 and the lower supporting rods 6 and are parallel to the screw rods 3, so that the telescopic positioning mechanisms can synchronously move, and the telescopic of the upper supporting rods 5 and the lower supporting rods 6 is not influenced. It should be understood that more telescopic positioning mechanisms may be provided along the height direction of the screw 3, and the number of telescopic positioning mechanisms may be determined according to the length of the precast tubular pile 10 and be proportional to each other, so as to ensure the firmness of the hoisting device between the precast tubular piles 10.
In a more preferred embodiment, the positioner 8 of the precast tubular pile lifting device of the above embodiment is detachably connected with the screw 3, so as to replace positioners 8 with different specifications and adapt to the lifting and positioning of precast tubular piles 10 with different inner diameters.
Finally, it should be noted that any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention. While the foregoing description of the embodiments of the present invention has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the invention, but rather, it is intended to cover all modifications or variations within the scope of the invention as defined by the claims of the present invention.
Claims (10)
1. A precast tubular pile lifting device, characterized by comprising:
a screw;
the screw rod fixing device comprises a rigid sleeve and a first threaded ring, wherein the rigid sleeve and the first threaded ring are sleeved on the upper part of a screw rod which is vertically arranged, the lower end of the rigid sleeve is fixedly connected with the upper end of the first threaded ring, and the first threaded ring is in threaded connection with the screw rod;
the second threaded ring is in threaded connection with the screw rod and is positioned below the first threaded ring, and the threads among the first threaded ring, the second threaded ring and the screw rod are opposite in rotation direction;
the upper end of the upper supporting rod is rotationally connected with the first threaded ring;
the lower end of the lower supporting rod is rotationally connected with the second threaded ring;
the lower end of the upper supporting rod and the upper end of the lower supporting rod are both in rotary connection with the supporting plate; the upper shaft of the screw is symmetrically provided with a plurality of telescopic positioning mechanisms consisting of the upper support rods, the lower support rods and the support plates;
a positioner; the locator is an inverted cone and is fixed at the lower end of the screw rod.
2. A precast tubular pile lifting device according to claim 1, wherein a handle is fixed to the outer side wall of the rigid sleeve; optionally, the handle includes any one of a hook body and a ring body.
3. The precast tubular pile lifting device according to claim 1, wherein in each telescopic positioning mechanism, two upper support rods and two lower support rods are arranged, the two upper support rods are symmetrically distributed on two sides of a first threaded ring, and the two lower support rods are symmetrically distributed on two sides of a second threaded ring; the upper support rod and the lower support rod are both rotatably connected with the support plate.
4. A precast tubular pile lifting device according to claim 1, wherein the support plate is a vertically arranged and outwardly projecting arcuate plate.
5. A precast tubular pile lifting device according to claim 1, wherein the outer side wall of the support plate is provided with a non-slip mat.
6. The precast tubular pile lifting device according to claim 5, wherein the material of the anti-slip pad comprises any one of rubber and flexible plastic.
7. The precast tubular pile lifting device according to claim 1, wherein the supporting plate is connected with the upper supporting rod and the lower supporting rod through a base plate and a connecting column; wherein: the base plate is vertically arranged, and the lower end of the upper supporting rod and the upper end of the lower supporting rod are both rotationally connected with the base plate; and two ends of the connecting column are fixedly connected with the base plate and the supporting plate respectively.
8. A precast tubular pile lifting device according to any one of claims 1 to 7, wherein at least two sets of telescopic positioning mechanisms are provided along the height direction of the screw, and each set of telescopic positioning mechanisms corresponds to one first threaded ring and one second threaded ring; the first threaded rings of the telescopic positioning mechanism are connected through a rigid connecting rod.
9. A precast tubular pile lifting device according to claim 8, wherein the rigid connecting rod is located outside the upper and lower support rods and parallel to the screw.
10. A precast tubular pile lifting device according to any one of claims 1 to 7, wherein the locator is detachably connected to the screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311767715.5A CN117509408A (en) | 2023-12-21 | 2023-12-21 | Precast tubular pile hoisting accessory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311767715.5A CN117509408A (en) | 2023-12-21 | 2023-12-21 | Precast tubular pile hoisting accessory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117509408A true CN117509408A (en) | 2024-02-06 |
Family
ID=89759014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311767715.5A Pending CN117509408A (en) | 2023-12-21 | 2023-12-21 | Precast tubular pile hoisting accessory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117509408A (en) |
-
2023
- 2023-12-21 CN CN202311767715.5A patent/CN117509408A/en active Pending
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