Protective device for plane tensioning hole of large-span prestressed beam
By designing three-dimensional protective devices, using L-shaped hot-dip galvanized angle steel and protective frames, the problems of high protection difficulties and insufficient safety of steel pipes during the tensioning of large span prestressed beams are solved, and higher stability is achieved. Safety and economy reduce construction costs and operational difficulties.
Patent Information
- Application Number
- CN202420626778.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-03-28
AI Technical Summary
During the plane tensioning of existing large-span prestressed beams, the construction operation of steel pipe protection devices is difficult, and three-dimensional protection cannot be effectively carried out, which affects the stability and safety of the building and increases costs.
Three-dimensional protection device including L-shaped hot-dip galvanized angle steel base, protective frame, support, inclined surface, protective plate and locking device is adopted to form a protective structure through multiple sides to improve stability and safety, and use 20*20 Hot-dip galvanized rectangular tube reinforcement and 13mm thick wood plyboard protective board ensure protection effect and convenience.
The stability, safety and economy of large-span prestressed beams in large public buildings during the tensioning process has been improved. Compared with the traditional steel pipe method, the convenience of construction operation has been greatly improved, and the safety and service life have also been significantly improved.
Smart Images
Figure CN222228051U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction, in particular to a large-span prestressed beam plane tensioning hole protection device. Background Art
[0002] With the widespread application of prestressed concrete floor slabs in large public buildings, the prestressed beams have large spans, large geometric dimensions and heavy weight. In order to ensure the overall stability, convenience and safety of the prestressed beams during the tensioning construction process, it is very meaningful to study the three-dimensional protection scheme for the plane tensioning openings of large-span prestressed beams.
[0003] At present, the common method in this industry is to use steel pipes for protection. The construction operation is difficult, the convenience is low, and it greatly affects the overall appearance of the building. At the same time, there are dangers in the gaps between the steel pipes when using steel pipes for protection. Even if a protective net is placed between the steel pipes, it cannot provide better protection. At the same time, when using steel pipes for protection, more steel pipes need to be connected. During the steel pipe connection process, the stability of the steel pipe connection is also related to the workers' operation, time cost and experience cost, which increases the cost of steel pipe protection. Utility Model Content
[0004] In view of the deficiencies in the prior art, the technical problem solved by the utility model is a large-span prestressed beam plane tensioning opening protection device, which solves the problem that the existing steel pipe support is difficult to construct and operate and cannot perform three-dimensional protection well.
[0005] In order to solve the above problems, the technical solution adopted by the utility model is: a large-span prestressed beam plane tensioning hole protection device, characterized in that: it includes a base, the base is an L-shaped hot-dip galvanized angle steel welded together; a protective frame is arranged directly above the base, and the protective frame and the base are fixedly connected by a support member; the protective frame is arranged parallel to the base, and a plurality of inclined surfaces are formed between the base and the protective frame; a placement groove is provided on the inclined surface, and a plurality of protective plates are arranged in the placement groove, and the protective plates are matched and connected with the protective groove; a reinforcing rib is provided on the base, one end of the reinforcing rib is fixedly connected to the base, and the other end extends along the inclined surface to the protective frame and is fixedly connected to the protective frame.
[0006] The technical principle of this solution is: a three-dimensional protective structure is formed by the protective frame, the base and the support frame, and protective plates are arranged on the four inclined surfaces set between the protective frame and the base for protection. A three-dimensional structure is formed by multiple surfaces for protection, and the protective effect is better.
[0007] The beneficial effects of this solution are: through the fixed connection between the protective frame and the base, a protective plate is fixed on the inclined surface set between the fixed frame and the base, and the three-dimensional protective structure composed of multiple surfaces is beneficial to improving the stability, safety and economy of large-span prestressed beams of large public buildings during the tensioning process. Compared with the traditional steel pipe method, the safety and convenience of construction operation are greatly improved.
[0008] Furthermore, a locking device is provided on the inclined surface near the protective frame. A T-shaped pin is provided on the locking device. The pin is parallel to the protective plate. The protective plate can be limited and locked by the provided pin to ensure that the protective plate is not easily removed, thereby providing good safety protection.
[0009] Furthermore, a handle is provided on the protective plate, and the handle is fixedly connected to the protective plate, so as to facilitate the installation and removal of the protective plate and reduce the labor intensity of disassembly.
[0010] Furthermore, the reinforcement ribs are 20*20 hot-dip galvanized rectangular tubes, which can exert better anti-corrosion performance and the quality is very stable when used without worrying about quality risks. The comprehensive mechanical properties of the galvanized rectangular tubes are very good, and the cold and hot processing performances have reached very good standards. The surface is galvanized, so it can naturally achieve a longer service life. There is no need to worry about corrosion when used in various environments, and the service life is long.
[0011] Furthermore, the protective plate is a 13 mm thick wood plywood, which is easy to cut, flexible, and highly corrosion-resistant. It is also a recyclable material, saving costs.
[0012] Furthermore, the inclination angle of the four inclined surfaces between the base and the protective frame is 15°, and a three-dimensional protective structure is formed by the four inclined surfaces, the base and the protective frame, which has good stability.
[0013] Furthermore, a limit strip is provided at one end of the placement groove close to the base, and the limit strip is connected with the groove provided on the protective plate. The bottom of the protective plate is limited by the limit strip, so that the protective plate is fixed more firmly, has better protection, and is easy to install and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 It is a schematic diagram of the structure of the utility model;
[0016] Figure 3 for Figure 2 A partial enlarged view of middle A;
[0017] Figure 4 It is a schematic diagram of the structure of the protective plate. DETAILED DESCRIPTION
[0018] The following is further described in detail through specific implementation methods:
[0019] The figure marks in the drawings of the specification include: base 1, protective frame 2, reinforcing ribs 3, support members 4, protective plates 5, locking devices 6, latches 7, handles 8, inclined surfaces 9, placement slots 10, limiting strips 11, and grooves 12.
[0020] Embodiment 1 is basically as attached Figure 1 To Attachment Figure 4 As shown: a large-span prestressed beam plane tensioning hole protection device, including a base 1, the base 1 is formed by welding an L-shaped hot-dip galvanized angle steel, a protection frame 2 is arranged at the upper end of the base 1, the protection frame 2 is arranged parallel to the base 1, the base 1 and the protection frame 2 are fixedly connected by a support member 4, so that the base 1, the protection frame 2 and the support frame form a three-dimensional protection structure, four inclined surfaces 9 are arranged between the base 1 and the protection frame 2, the inclination angle of the inclined surface 9 is 15°, and the inclined surface 9 can better reduce the stress of the base 1 and improve the stability of the base 1, and placement grooves 10 are arranged on the inclined surfaces 9, and a protection plate 5 made of 13mm thick wood glue board is placed in the placement groove 10, and the protection plate 5 is arranged around the inclined surface 9, which can play a good protective role and has good safety, and handles 8 are arranged on the protection plate 5, through the protection plate 5 and the placement groove 10 arranged on the inclined surface 9, through the handle 8 It is better to place the protective plate 5 in the placement groove 10, and it is also convenient to disassemble and reduce the work intensity. A groove 12 is provided at the lower end of the protective plate 5 to cooperate with the limit strip 11 provided on the inclined surface 9, so that the lower end position of the protective plate 5 is in a limited state after the protective plate 5 is installed in the placement groove 10. Then, a locking device 6 is provided at a position close to the protective frame 2 on the inclined surface 9. The locking device 6 is multiple, and a T-shaped latch 7 is provided on the locking locking device 6. The latch 7 is parallel to the protective plate 5. The protective plate 5 can be limited and locked by the provided latch 7 to ensure that the protective plate 5 is not easy to be removed, and the safety protection is good. During installation, a reinforcing rib 3 is fixedly provided on the base 1, and the reinforcing rib 3 is a 20*20 hot-dip galvanized rectangular tube. One end of the reinforcing rib 3 is fixedly connected to the base 11, and the other end extends along the inclined surface 9 to the protective frame 2 and is fixedly connected to the protective frame 2, so that the entire three-dimensional protective structure has high strength.
[0021] Specific implementation method: When in use, first weld an L-shaped hot-dip galvanized angle steel into a base 1 and surround the hole in the base 1. Due to the L-shaped structural setting, the base 1 is placed more stably. Then, support members 4 are welded around the base 1, and a protective frame 2 is welded at one end of the support member 4 away from the base 1. When welding the protective frame 2, the protective frame 2 is arranged parallel to the base 1, and four inclined surfaces 9 are arranged between the base 1 and the protective frame 2. The inclined surfaces 9 are all provided with placement grooves 10. Then, the protective plate 5 is placed in the placement groove 10. Then, the protective plate 5 is provided with a groove 12 at the lower end, which is matched and connected with the limit strip 11 arranged on the inclined surface 9, so that the lower end position of the protective plate 5 is in a limited state after the protective plate 5 is installed in the placement groove 10. Then, a locking device 6 is provided at a position close to the protective frame 2 on the inclined surface 9. The protective plate 5 is limited and fixed by sliding the T-shaped pin 7 on the locking device 6. The hole is protected by the three-dimensional protective structure setting, and the safety is good.
[0022] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A large-span prestressed beam plane tensioning hole protection device, characterized in that: It includes a base, which is formed by welding an L-shaped hot-dip galvanized angle steel. A protective frame is arranged directly above the base, and the protective frame is fixedly connected to the base through a support member; the protective frame is arranged parallel to the base, and a plurality of inclined surfaces are formed between the base and the protective frame; a placement groove is arranged on the inclined surface, and a plurality of protective plates are arranged in the placement groove, and the protective plates are matched and connected with the protective groove; a reinforcing rib is arranged on the base, and one end of the reinforcing rib is fixedly connected to the base, and the other end extends along the inclined surface to the protective frame and is fixedly connected to the protective frame.
2. A large-span prestressed beam plane tensioning opening protection device according to claim 1, characterized in that: A locking device is arranged on the inclined surface near the protective frame, and a T-shaped latch is arranged on the locking device, and the latch is parallel to the protective plate.
3. The large-span prestressed beam plane tensioning hole protection device according to claim 1 is characterized by: The protective plate is provided with a handle, which is fixedly connected to the protective plate.
4. The large-span prestressed beam plane tensioning hole protection device according to claim 1 is characterized by: The reinforcing ribs are 20*20 hot-dip galvanized rectangular tubes.
5. The large-span prestressed beam plane tensioning opening protection device according to claim 1 is characterized by: The protective plate is a 13 mm thick wood plywood.
6. The large-span prestressed beam plane tensioning hole protection device according to claim 1, characterized in that: The inclination angle of the four inclined surfaces between the base and the protective frame is 15°.
7. The large-span prestressed beam plane tensioning hole protection device according to claim 1, characterized in that: A limiting strip is arranged at one end of the placement groove close to the base, and the limiting strip is matched and connected with a groove arranged on the protective plate.