A safety belt fastening device mounted on a pier column and a bent cap top
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
- 2025-06-25
- Publication Date
- 2026-07-07
Smart Images
Figure CN224468236U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of bridge construction safety equipment, specifically to a safety belt fastening device installed on the top of piers and cap beams. Background Technology
[0002] With the booming development of transportation, bridge structural forms are becoming increasingly diverse. Cast-in-place box girders and precast prestressed concrete simply supported small box girders are widely used. The support method for box girders is generally a bearing pad placed on top of the piers or cap beams. However, in actual construction, because the concrete grades of the piers and cap beams are different from those of the bearing pads, they usually need to be constructed separately. When constructing the bearing pads and installing the supports, the construction scaffolds and platforms have already been removed, making it impossible for construction workers to work on a safe platform. Furthermore, there are no reliable connection points on the tops of the piers and cap beams for attaching safety belts, making safe construction impossible for workers.
[0003] Most existing related designs are too complex to be applied to actual construction. For example, Chinese patent CN215629383U, entitled "A Device for Hanging Safety Belts for Workers Operating Bridge Cap Beams," discloses a safety belt fastening device with a column and steel wire rope. Its large size makes it inconvenient to carry, and the complex operation of winding and fixing the steel wire rope to the column makes it unsuitable for actual construction. The technical solution disclosed in Chinese patent CN218420711U, entitled "A Safety Belt Fastening Device for Work at the Bottom of a Bridge," is even rarer in practical application. The main reason is that existing urban bridges and highway bridges are equipped with crash barriers. The fixing rings installed on the bridge top plate require a safety rope to bypass the crash barrier and fit tightly against the outer perimeter and the bottom of the beam. This creates a triangular void between the safety rope and the crash barrier, making it prone to wear at the points where the safety rope contacts the concrete edges. The rubber sleeve used to protect the safety rope is difficult to position, posing numerous safety hazards. Furthermore, fixing the safety rope at multiple points to the bottom of the beam can damage the concrete structure at the bottom of the beam.
[0004] There are many similar technologies in the existing technology: they are theoretically valid, but the defects they contain make them rarely applicable to actual construction, which means that there are always hidden dangers in the safe construction of piers and cap beams.
[0005] Therefore, those skilled in the art urgently need to develop a completely new safe construction structure from a practical perspective. Utility Model Content
[0006] Therefore, the technical problem to be solved by this utility model is to overcome the defects existing in the prior art, thereby providing a safety belt fastening device that can be installed on the top of piers and cap beams.
[0007] A safety belt fastening device for installation on the top of piers and cap beams includes: a fastening pole and a pre-embedded sleeve;
[0008] The inner wall of the embedded sleeves embedded in the top concrete layer of the pier column and the top concrete layer of the cap beam is threaded.
[0009] The hanging pole, consisting of a hanging part and a connecting part, is threadedly connected to the internal thread of the pre-embedded sleeve through the external thread on the outer ring of one end of the connecting part.
[0010] The other end of the connecting part is fixedly connected to the hanging part.
[0011] Preferably, the attachment part adopts a circular ring structure.
[0012] Preferably, the outer diameter of the ring structure is 100 mm;
[0013] The inner diameter of the circular structure is 60 mm.
[0014] Preferably, the outer diameter of the embedded sleeve is 30mm; the inner diameter of the embedded sleeve is 20mm.
[0015] Preferably, the length of the pre-embedded sleeve is 50mm.
[0016] Preferably, the connecting part is made of solid round steel with a diameter of 20mm and a height of 300mm.
[0017] Preferably, the attachment part is a ring structure made of solid round steel with a diameter of 20mm.
[0018] The technical solution of this utility model has the following advantages:
[0019] Compared with similar technologies, this utility model is more practical. When workers are working on the top of piers and cap beams, they only need to carry a single anchor pole. This effectively solves the problem of no reliable connection point for safety belts on the top of piers and cap beams in the existing technology. It enables workers to attach safety belts when constructing foundation stones or installing supports on the top, ensuring the safety of high-altitude operations and reducing safety risks. Attached Figure Description
[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0021] Figure 1 This is an exploded view of the overall structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the present invention installed on the top of the pier and the cap beam;
[0023] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.
[0024] Explanation of reference numerals in the attached figures:
[0025] 1-Hanging pole; 2-Embedded sleeve; 101-Hanging part; 102-Connecting part. Detailed Implementation
[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.
[0029] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0030] Example 1
[0031] like Figure 2 This embodiment discloses a safety belt fastening device installed on the top of piers and cap beams, such as... Figure 3 for Figure 2 The enlarged schematic diagram at point A shows a safety belt fastening device installed on the top of the pier and the cap beam, which includes: a fastening pole 1 and a pre-embedded sleeve 2;
[0032] The inner wall of the embedded sleeve 2, which is embedded into the concrete layer on the top surface of the pier column and the concrete layer on the top surface of the cap beam, is threaded.
[0033] The hanging pole 1, which consists of the hanging part 101 and the connecting part 102, is threadedly connected to the internal thread of the pre-embedded sleeve 2 through the external thread of the outer ring of one end of the connecting part 102.
[0034] The other end of the connecting part 102 is fixedly connected to the hanging part 101.
[0035] As an improved implementation method, such as Figure 1 As shown, the attachment part 101 adopts a circular ring structure. The outer diameter of the circular ring structure is 100mm; the inner diameter of the circular ring structure is 60mm. The attachment part 101 is a circular ring structure constructed from solid round steel with a diameter of 20mm. It should be noted that using this circular ring structure as a safety belt hook attachment device is more convenient for 360-degree circumferential construction compared to the traditional structure using steel wire rope. Furthermore, the circular ring structure has less friction than steel wire rope and does not produce elastic deformation, thus preventing the connection from detaching due to elastic deformation.
[0036] Furthermore, the inconvenience of existing technology in practical construction will be explained further. In actual construction, components embedded in concrete are typically not recommended to be exposed due to construction safety and relevant building standards. Therefore, although the existing steel wire rope is theoretically fixed in its pre-fixed position, in practice, it requires separate installation and fixing. Based on this, this structure is not practical in actual construction because it not only requires transporting the exposed large-sized fixing device and steel wire rope, but also further reassembly before use.
[0037] As an improved implementation method, the outer diameter of the pre-embedded sleeve 2 is 30mm; the inner diameter of the pre-embedded sleeve 2 is 20mm.
[0038] The length of the pre-embedded sleeve 2 is 50mm.
[0039] In this embodiment, the connecting part 102 is made of solid round steel with a diameter of 20mm and a height of 300mm, ensuring that the load-bearing capacity meets construction requirements. Its small size also makes it very convenient for construction personnel to carry. Furthermore, the connecting part 102 and the pre-embedded sleeve 2 are connected by threads. In addition to its small size, it is also easy to install.
[0040] It should be noted that in practical applications, since the pre-embedded sleeve 2 is already embedded, construction workers only need to screw the threaded part of the hanging pole 1 into the pre-embedded sleeve 2 to form a connection point for safety belt attachment. During construction, workers attach the hook from their safety belt to the attachment part 101 of the hanging pole 1 to ensure construction safety.
[0041] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A safety belt fastening device installed on the top of piers and cap beams, characterized in that, include: Attach the upright (1) and the pre-embedded sleeve (2); The embedded sleeve (2) embedded in the concrete layer on the top surface of the pier column and the concrete layer on the top surface of the cap beam has internal threads on its inner wall. The hanging pole (1), which is composed of the hanging part (101) and the connecting part (102), is threadedly connected to the internal thread of the pre-embedded sleeve (2) through the external thread of the outer ring of one end of the connecting part (102). The other end of the connecting part (102) is fixedly connected to the hanging part (101).
2. A safety belt fastening device installed on the top of piers and cap beams according to claim 1, characterized in that, The attachment part (101) adopts a ring structure.
3. A safety belt fastening device installed on the top of piers and cap beams according to claim 2, characterized in that, The outer diameter of the circular structure is 100 mm; The inner diameter of the circular structure is 60 mm.
4. A safety belt fastening device installed on the top of piers and cap beams according to claim 1, characterized in that, The outer diameter of the pre-embedded sleeve (2) is 30mm; the inner diameter of the pre-embedded sleeve (2) is 20mm.
5. A safety belt fastening device installed on the top of piers and cap beams according to claim 1, characterized in that, The pre-embedded sleeve (2) is 50mm long.
6. A safety belt fastening device installed on the top of piers and cap beams according to claim 4, characterized in that, The connecting part (102) is made of solid round steel with a diameter of 20mm and a height of 300mm.
7. A safety belt fastening device installed on the top of piers and cap beams according to claim 2, characterized in that, The attachment part (101) is a ring structure made of solid round steel with a diameter of 20mm.