Pile foundation reinforcement cage winding positioning device
The positioning device using arc-shaped rigid hoop and locking components solves the problem of non-reusability caused by welding of pile foundation steel cages, improving winding efficiency and reducing construction costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY CONSTRUCTION ENGINEERING GROUP
- Filing Date
- 2025-06-13
- Publication Date
- 2026-06-02
AI Technical Summary
In existing technologies, steel bars in pile foundation reinforcement cages are welded before the spiral stirrups are wrapped, which makes them unusable for reuse and increases construction costs.
The positioning device, which uses an arc-shaped rigid hoop and locking components for connection, replaces welding fixation, improves assembly efficiency, and can be disassembled and reused.
Improve winding efficiency, reduce labor costs, reduce welding steps, realize the recycling of steel cages, and reduce construction costs.
Smart Images

Figure CN224309934U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel cage manufacturing technology, specifically to a positioning device for the winding of steel bars in a pile foundation steel cage. Background Technology
[0002] Before the spiral stirrups are wound around the reinforcing cage of the cast-in-place pile foundation, a ring of auxiliary reinforcing bars is usually welded to the outside of the main reinforcing bars at intervals to reduce the jamming between the main reinforcing bars and the rollers of the winding machine during the winding process. However, the auxiliary reinforcing bars are connected to the main reinforcing bars of the reinforcing cage by welding and cannot be reused after removal, which increases the construction cost. Utility Model Content
[0003] The main technical problem solved by this utility model is to provide a positioning device for the reinforcing bars of a pile foundation steel cage, which can be recycled and reused to reduce construction costs.
[0004] This application provides a positioning device for the reinforcing cage of a pile foundation, comprising:
[0005] Two arc-shaped rigid hoops are configured to surround the periphery of the pile foundation reinforcement cage;
[0006] Two connectors are respectively fixed to the two arc-shaped rigid hoops on the side facing each other;
[0007] A locking assembly configured to lock the two connectors together.
[0008] As a further embodiment of the pile foundation reinforcement cage positioning device provided in this application, the locking assembly includes:
[0009] Support members connected to each of the aforementioned connectors;
[0010] At least two locking members are provided on the support member, and the at least two locking members on each support member correspond one-to-one;
[0011] At least two locking connectors, each corresponding to one of the two locking members, each locking member having two locking engagement portions configured to lock into one of the two corresponding locking members respectively.
[0012] As a further embodiment of the pile foundation reinforcement cage positioning device provided in this application, each of the supporting members is provided with two locking members, and the two locking members provided on each of the supporting members are symmetrically arranged about the connecting member.
[0013] As a further embodiment of the pile foundation reinforcement cage positioning device provided in this application,
[0014] The locking element is a sleeve, and in two corresponding locking elements, the inner cavity of one of the sleeves is formed with an internal thread;
[0015] The locking connector is a rod, the locking engagement part is an external thread provided at one end of the rod, the other end of the rod is provided with a limiting part, the rod passes through the sleeve without internal thread and the external thread at one end of the rod is screwed into the internal thread of one of the sleeves, and the limiting part abuts against the sleeve without internal thread.
[0016] As a further embodiment of the pile foundation reinforcement cage positioning device provided in this application, the limiting part is an operating part provided at the other end of the rod, and the operating part is configured to be screwed under the action of external force to screw the external thread into the internal thread of the sleeve.
[0017] As a further embodiment of the pile foundation reinforcement cage positioning device provided in this application, the operating part is a knob.
[0018] As a further embodiment of the pile foundation reinforcement cage positioning device provided in this application, after the two arc-shaped rigid hoops are locked together by the locking assembly, the two connecting parts abut against each other.
[0019] As a further embodiment of the pile foundation reinforcement cage positioning device provided in this application, the arc-shaped rigid hoop has the same semi-circle shape.
[0020] According to the pile foundation rebar cage positioning device of the above embodiment, two connecting parts are connected by a locking assembly. Compared with the welding fixing method used in related technologies, this improves assembly efficiency, further enhances winding efficiency, and reduces the labor cost of removing or welding rebar. After winding is completed, this positioning device can be removed for reuse, reducing product construction costs and improving manufacturing efficiency. Attached Figure Description
[0021] Figure 1 A structural schematic diagram of the pile foundation reinforcement cage positioning device provided in this application;
[0022] Figure 2 The front view of the pile foundation reinforcement cage positioning device provided in this application in conjunction with the reinforcement cage and the winding machine;
[0023] Figure 3 A side view of the pile foundation reinforcement cage positioning device provided in this application in conjunction with the reinforcement cage and the winding machine;
[0024] Figure 4 A schematic diagram of the locking component in the pile foundation reinforcement cage positioning device provided in this application;
[0025] Figure 5 A top view of the pile foundation reinforcement cage positioning device provided in this application in conjunction with the reinforcement cage and the winding machine;
[0026] Figure 6 This is a top view of the locking component in the pile foundation reinforcement cage positioning device provided in this application. Detailed Implementation
[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.
[0028] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.
[0029] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).
[0030] The pile foundation rebar cage positioning device provided in this application is used to position the rebar cage before winding, to prevent jamming during the winding process and improve the winding efficiency. Furthermore, the positioning device is easy to disassemble and reassemble for reuse, reducing costs.
[0031] See Figures 1-6 As shown, the pile foundation reinforcement cage positioning device provided in this application includes: two arc-shaped rigid hoops 10, two connectors 20, and a locking assembly 30.
[0032] The curved rigid stirrups 10 are curved in shape, and the rigid material can be made of steel reinforcement to enhance their structural strength. For example, they can be made using steel reinforcement found on-site, and two curved rigid stirrups 10 are configured to enclose the perimeter of the pile foundation reinforcement cage 100. Figure 2 As shown, the cross-sectional shape of the steel cage 100 is circular or approximately circular, and the inner circle shape enclosed by the two arc-shaped rigid hoops 10 is the same as the cross-sectional shape of the steel cage 100.
[0033] Before the reinforcement cage 100 is wound with reinforcement bars, the reinforcement cage 100 is welded with stirrups 102 at predetermined intervals (1m-2m) along its length direction. The stirrups 102 support each main reinforcement bar 101 of the reinforcement cage 100, so that each main reinforcement bar 101 is connected into a whole to form the reinforcement cage 100.
[0034] Two connectors 20 are respectively fixed on the opposite side of the two arc-shaped rigid hoops 10. The opposite side of the two arc-shaped rigid hoops 10 is the opposite side of the two arc-shaped rigid hoops 10 after they are enclosed on the steel cage 100. It can be considered that the connectors 20 are fixed on the inner side of the two arc-shaped rigid hoops 10.
[0035] The locking assembly 30 is configured to lock the two connectors 20 together, thereby indirectly locking the two arc-shaped rigid hoops 10 together.
[0036] The locking assembly 30 can detachably lock the two connectors 20 together. In practical applications, the rebar cage 100 can be equipped with multiple positioning devices provided in this application at intervals to form a structure for positioning each main bar 101 of the rebar cage 100 before winding. During the winding process, the rebar cage 100 is placed on the two rollers 200 of the winding machine, and after winding a section of rebar 103, the previous positioning device is removed and the next positioning device is installed. Compared with the welding fixing method used in related technologies, this method can improve assembly efficiency, further improve winding efficiency, and reduce the labor cost of removing or welding the rebar. After winding is completed, the positioning device can be removed for recycling, reducing product construction costs and improving manufacturing efficiency.
[0037] See Figure 4As shown, the locking assembly 30 includes two support members 31, at least two locking members 32 disposed on each support member 31, and at least two locking connectors 33. The two support members 31 are respectively connected to two connectors 20. The at least two locking members 32 on each support member 31 correspond one-to-one, and the at least two locking connectors 33 correspond to the two corresponding locking members 32. The locking member 32 has two locking mating parts 321, which are configured to lock and connect with the two corresponding locking members 32 respectively, thereby connecting the two arc-shaped rigid hoops 10 by tightening the support members 31 through the locking connectors 33.
[0038] In this embodiment, each support member 31 is provided with two locking members 32. The two locking members 32 provided on each support member 31 are symmetrically arranged about the connector 20 to provide uniform tension force.
[0039] In some embodiments, the locking member 32 is a sleeve. In two corresponding locking members 32, one sleeve has an internal thread 321 formed in its inner cavity, and the other sleeve has a through hole in its inner cavity.
[0040] The locking connector 33 is a rod, and the locking mating part 33 is an external thread provided at one end of the rod. The other end of the rod is provided with a limiting part 34. The rod passes through a sleeve without an internal thread 321 and its external thread at one end is screwed into the internal thread 321 of one of the sleeves. The limiting part 34 abuts against the sleeve without an internal thread, and then the two arc-shaped rigid hoops 10 are connected by tightening the support member 31 through the locking connector 33.
[0041] In this application, the limiting part 34 is an operating part provided at the other end of the rod. The operating part is configured to be screwed under the action of external force to screw the external thread into the internal thread 321 of the sleeve. In actual use, the end of the locking connector 33 without the limiting part 34 passes through the through hole of the sleeve without the internal thread, and the external thread of the locking connector 33 is screwed into the internal thread hole 321 of the other sleeve.
[0042] In a preferred embodiment, the operating part is a knob to facilitate the operator to perform turning operations.
[0043] In this embodiment, after the two arc-shaped rigid hoops 10 are locked together by the locking assembly 30, the two connecting pieces 20 abut against each other, thereby generating a certain supporting force and forming a stable supporting effect on the steel cage 100.
[0044] In this application, the arc-shaped rigid hoop 10 has the same semicircle shape to facilitate the manufacture of this positioning device.
[0045] In summary, the rebar positioning device for suspended pile foundations provided in this application connects two connectors via a locking assembly. Compared to the welding fixing method used in related technologies, this improves assembly efficiency, further enhances winding efficiency, and reduces labor costs associated with removing or welding rebar. After winding is completed, the positioning device can be removed for reuse, reducing product construction costs and improving manufacturing efficiency.
[0046] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.
Claims
1. A piling cage rebar positioning device, characterised in that, include: Two arc-shaped rigid hoops are configured to surround the periphery of the pile foundation reinforcement cage; Two connectors, each of which is fixed to one side of the two arc-shaped rigid hoops facing the other; A locking assembly configured to lock the two connectors together.
2. A pile reinforcement cage rebar positioning device as claimed in claim 1, wherein, The locking assembly includes: Support members connected to each of the aforementioned connectors; At least two locking members are provided on the support member, and the at least two locking members on each support member correspond one-to-one; At least two locking connectors, each corresponding to one of the two locking members, each locking member having two locking engagement portions configured to lock into one of the two corresponding locking members respectively.
3. A pile reinforcement cage rebar positioning device as claimed in claim 2, wherein, Each of the support members is provided with two locking members, and the two locking members provided on each support member are symmetrically arranged about the connecting member.
4. The pile foundation reinforcement cage positioning device as described in claim 3, characterized in that, The locking element is a sleeve, and in two corresponding locking elements, one of the sleeves has an internal thread formed in its inner cavity; The locking connector is a rod, the locking engagement part is an external thread provided at one end of the rod, the other end of the rod is provided with a limiting part, the rod passes through the sleeve without internal thread and the external thread at one end of the rod is screwed into the internal thread of one of the sleeves, and the limiting part abuts against the sleeve without internal thread.
5. The pile foundation reinforcement cage positioning device as described in claim 4, characterized in that, The limiting part is an operating part located at the other end of the rod. The operating part is configured to be screwed under the action of external force to screw the external thread into the internal thread of the sleeve.
6. The pile foundation reinforcement cage positioning device as described in claim 5, characterized in that, The operating part is a knob.
7. The pile foundation reinforcement cage positioning device as described in claim 1, characterized in that, After the two arc-shaped rigid hoops are locked together by the locking assembly, the two connecting pieces abut against each other.
8. The pile foundation reinforcement cage positioning device as described in claim 1, characterized in that, The arc-shaped rigid hoop has the same semicircle shape.