A clamp installation aid
By designing a clamp installation aid, which utilizes a combination structure of steel plates, fixing grooves, and square steel pipes, the problem of rapid and accurate installation of clamps in bridge construction was solved, improving construction quality and efficiency while reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 中庆建设有限责任公司
- Filing Date
- 2025-07-09
- Publication Date
- 2026-05-29
AI Technical Summary
In bridge construction, how to quickly and accurately position and install the clamps is a technical challenge, especially under conditions of high piers and complex ground, which affects the elevation and overall quality of the cap beam construction.
A clamp installation aid was designed, comprising two steel plates, several fixing slots, a locking structure, and several square steel pipes. It enables quick installation and disassembly through swivel bolts and fixing slots, and uses square steel pipes inserted into the fixing slots to assist in clamp positioning.
It achieves precise positioning of the clamps, improves construction quality and efficiency, reduces costs, and has a small footprint, making it suitable for repeated use.
Smart Images

Figure CN224299813U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bridge construction technology, specifically to a clamp installation aid. Background Technology
[0002] The cap beam is a key load-bearing and force-transferring component connecting the superstructure and substructure of a bridge, and is an important key element in bridge construction. (1) Cap beam supports the superstructure: The cap beam directly supports the superstructure of the bridge (such as precast T-beams, box girders, hollow slab beams, or supports for cast-in-place box girders, etc.). (2) Distributes and transfers loads: It disperses and transfers the huge dead load (bridge self-weight, bridge deck pavement, guardrails, etc.) and live load from the superstructure to the piers below. (3) Concentrated force to distributed force: The supports of the superstructure are usually placed on top of the cap beam. The cap beam effectively transforms the concentrated load (or large local load) transferred from the supports into a more uniform distributed load, which is crucial for the uniformity of stress and safety of the piers. The cap beam is an important component of the bridge structure.
[0003] The cap beam clamp method is a widely used scaffold-free support technique in the construction of high bridge piers, particularly suitable for situations where the piers are high, ground conditions are complex (such as crossing rivers, valleys, or transportation lines), or full-span scaffolding cannot be erected. Its core principle is to use high-strength steel clamps to tightly clamp the top of the completed pier (or at the design elevation), forming a stable load-bearing platform. Then, load-bearing beams (usually composite steel beams) are installed on the clamps. Finally, the cap beam bottom formwork is erected on the load-bearing beams, and subsequent reinforcement binding and concrete pouring are carried out.
[0004] The installation of the clamps involves using a crane to lift two semi-circular clamps to the designed elevation position on the pier. The two semi-clamps are then aligned with the pier, and the connecting bolts are inserted and initially tightened. The key step – bolt tightening: Using a specialized torque wrench, all high-strength bolts are tightened to the designed torque value in multiple stages (e.g., 50%, 80%, 100%), following the designed preload and a specified tightening sequence (usually diagonal, graded, symmetrical tightening). Ensuring uniform stress on all bolts is crucial for guaranteeing friction and safety. Therefore, maintaining a fixed design elevation during clamp installation is critical. Installing the clamps too high or too low directly affects the elevation of the cap beam and the overall bridge deck elevation. Thus, accurate and rapid clamp installation is a significant technical challenge during construction.
[0005] Therefore, ensuring the rapid and accurate installation of clamps during clamp installation is a problem that needs to be solved by those skilled in the art. Utility Model Content
[0006] To address the aforementioned problem of rapid and accurate installation of clamps, this invention proposes a clamp installation aid. This invention facilitates easy disassembly and assembly, promotes modular installation and disassembly, and allows for subsequent storage. It occupies little space, is reusable, and provides precise positioning for clamp installation, improving construction quality, increasing efficiency, and reducing costs.
[0007] This utility model proposes a clamp installation aid, which includes two steel plates, several fixing grooves, a locking structure and several square steel pipes. The two steel plates are rotatably connected at one end and connected at the other end through the locking structure to form a ring structure. Several fixing grooves are evenly arranged on the ring structure, and square steel pipes are arranged on the fixing grooves.
[0008] Furthermore, one end of the steel plate is provided with several connecting steel plates, and the connecting steel plates on two steel plates are staggered; the connecting steel plates are provided with through holes, and a steering shaft is provided in the through holes.
[0009] Furthermore, the locking structure includes a swivel bolt and a fixed slot. The fixed slot includes a rotating seat and a fixed seat, which are respectively mounted on two steel plates. One end of the swivel bolt is rotatably connected to the rotating seat, and the other end is inserted into a through hole on the fixed seat and is provided with a nut at the end.
[0010] Furthermore, steel lifting rings are provided on the steel plate.
[0011] Furthermore, the fixing groove is square with an opening at the top, and one end of the square steel pipe is inserted into the opening of the fixing groove.
[0012] The beneficial effects of the clamp installation auxiliary device described in this utility model are as follows:
[0013] (1) The clamp installation aid described in this utility model is easy to disassemble and assemble, facilitates prefabricated installation and disassembly as well as subsequent storage, occupies little space, can be reused, accurately positions the clamp installation construction, improves construction quality, improves construction efficiency, and reduces costs.
[0014] (2) The clamp installation aid described in this utility model can be quickly installed and disassembled by means of a swivel bolt and a fixing slot; by inserting a square steel pipe into the fixed slot, it plays an auxiliary role in the installation of the clamp. Attached Figure Description
[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.
[0016] In the attached diagram:
[0017] Figure 1 This is a top view of a clamp installation aid (square steel pipe omitted) according to this utility model;
[0018] Figure 2 This is a front view of the steel plate of the clamp installation aid described in this utility model;
[0019] Figure 3 This is a left view of a clamp installation aid according to the present invention;
[0020] Figure 4 This is a right view of a clamp installation aid according to the present invention;
[0021] Wherein: 1-steel plate, 2-fixing groove, 3-steel lifting ring, 4-slip bolt, 5-fixing slot, 6-swivel shaft, 7-connecting steel plate, 8-square steel pipe. Detailed Implementation
[0022] The technical solution of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of, and not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.
[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0025] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0026] Specific implementation method one: See Figures 1-4 This embodiment describes a clamp installation aid specifically comprising two steel plates 1, several fixing grooves 2, a locking structure, and several square steel pipes 8. The steel plates 1 are semi-circular rings, with one end of each steel plate 1 rotatably connected and the other end connected via the locking structure, thus forming a circular ring structure. Six fixing grooves 2 are evenly arranged on the circular ring structure. Each fixing groove 2 is square with an open top. Square steel pipes 8 are installed on each fixing groove 2, with one end inserted into the opening of the fixing groove 2. The six square steel pipes 8 serve to protect the clamp. Each fixing groove 2 is 5cm long, 5cm wide, and 10cm high, and is welded from 6mm thick steel plates. Each square steel pipe 8 is 50cm long and has a cross-sectional dimension of 4cm x 4cm. The steel plates 1 are 10mm thick and 100mm wide, and the diameter of the ring formed by the two steel plates 1 is 160cm.
[0027] A plurality of connecting steel plates 7 are provided at one end of the steel plate 1. The plurality of connecting steel plates 7 on the two steel plates 1 are arranged alternately. The connecting steel plates 7 are provided with through holes, and a directional movable shaft 6 is provided in the through holes, so that the two steel plates 1 are rotatably connected.
[0028] The locking structure includes a swivel bolt 4 and a fixed slot 5. The fixed slot 5 includes a rotating seat and a fixed seat, which are respectively set on two steel plates 1. One end of the swivel bolt 4 is provided with a rotating shaft, which is rotatably connected to the rotating seat. The other end is inserted into a through hole on the fixed seat and is provided with a nut. The specification of the swivel bolt 4 is M30*280.
[0029] Two steel lifting rings 3 are welded onto the steel plate 1, and the two steel lifting rings 3 are symmetrically arranged on the entire ring; the steel lifting rings 3 are 5cm long and 5cm wide, and are made of 6mm thick steel plate.
[0030] Before the clamp installation process, workers first install the clamp auxiliary device. The two steel lifting rings 3 of the auxiliary device are lifted by a crane, and the two steel plates 1 of the device are fixed to the designated elevation of the pier column. After tightening the slip bolts 4 and verifying that the position is correct, the six square steel pipes 8 are inserted into the six fixing slots 2. After the auxiliary device is installed, the clamp installation is carried out. The clamp can be directly placed on the auxiliary device without repeatedly checking the position and elevation. The clamp installation is safe and convenient to be directly placed on the auxiliary device, which plays a role in assisting the clamp installation.
[0031] In summary, the clamp installation aid described in this utility model is easy to assemble and disassemble, facilitating modular installation, disassembly, and subsequent storage. It occupies little space, is reusable, and provides precise positioning for clamp installation, improving construction quality, increasing efficiency, and reducing costs. The clamp installation aid of this utility model allows for quick installation and disassembly via the slip bolt 4 and the fixing slot 5; by inserting the square steel pipe 8 into the designated fixing slot 2, it assists in the installation of the clamp.
[0032] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit the utility model. They can also be reasonable combinations of the features described in the above embodiments. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A clamp installation aid, characterized in that: It includes two steel plates (1), several fixing grooves (2), a locking structure and several square steel pipes (8). The two steel plates (1) are rotatably connected at one end and connected at the other end through the locking structure to form a ring structure. Several fixing grooves (2) are evenly arranged on the ring structure and square steel pipes (8) are arranged on the fixing grooves (2). A plurality of connecting steel plates (7) are provided at one end of the steel plate (1), and the connecting steel plates (7) on the two steel plates (1) are staggered; a through hole is provided on the connecting steel plate (7), and a steering shaft (6) is provided in the through hole. The locking structure includes a swivel bolt (4) and a fixed slot (5). The fixed slot (5) includes a rotating seat and a fixed seat, which are respectively set on two steel plates (1). One end of the swivel bolt (4) is rotatably connected to the rotating seat, and the other end is inserted into the through hole on the fixed seat and a nut is provided at the end.
2. The clamp installation aid according to claim 1, characterized in that: A steel lifting ring (3) is provided on the steel plate (1).
3. The clamp installation aid according to claim 2, characterized in that: The fixing groove (2) is square with an opening at the top, and one end of the square steel pipe (8) is inserted into the opening of the fixing groove (2).