Prestress tension cross beam with steering device

Abstract

The utility model relates to the field of prestressed beam construction, in particular to a prestressed tension cross beam with a steering device. Comprising a tensioning cross beam, and a steering shaft and a steering wheel which are integrated are arranged on the two sides of the tensioning cross beam; the steering wheel can rotate around the steering shaft and is provided with a steel strand in a tensioning manner; the steering shaft is installed on a steel plate on the side face of the tensioning beam. According to the scheme, the prestress steering device and the tensioning cross beam are designed and machined together, the workload of assembly and disassembly construction and prestress construction of a traditional prestress bogie is effectively reduced, the industrialization degree of a pre-tensioning method prefabricated part is improved, and the frictional resistance of a steel strand in the steering process is effectively reduced through combined use of the steering shaft and the steering wheel. The method has good economic benefits, scientific and technological benefits and social benefits and is worthy of popularization and application.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of prestressed beam construction, in particular to a prestressed tensioning beam with a turning device. BACKGROUND

[0002] In the field of building engineering technology, the prestressed tensioning technology of the pretensioning method is an important construction method, which is widely used in the construction of bridges, buildings, large public facilities and other structures. The pretensioning method prestressed tensioning beam, as a key component of the prestressed tensioning system, its design and construction efficiency directly affects the progress and quality of the whole project.

[0003] In the traditional prestressed tensioning construction of the pretensioning method, a folded line prestressed bending turning frame is usually used to realize the turning and tensioning of the prestressed tendon. However, this turning frame structure is complex, occupies a large area, and its application is greatly limited for engineering projects with limited construction site area. In addition, the traditional turning frame also needs a large amount of construction equipment and manpower investment, the resistance is large when the steel strand is tensioned, the construction efficiency is low, the cost is high, which is not conducive to the improvement of the economic benefit and social benefit of the project. SUMMARY

[0004] In order to solve the above problems, the present application proposes a prestressed tensioning beam with a turning device. The device realizes efficient turning and tensioning of the prestressed tendon through ingenious structural design, while occupying a small area, suitable for engineering projects with limited construction site area. The use of the device not only improves the construction efficiency and reduces the construction cost, but also has significant economic benefit and social benefit, which is of great significance to the development of building engineering technology.

[0005] The present application has adopted the following technical solutions:

[0006] A prestressed tensioning beam with a turning device, comprising a tensioning beam, an integrated turning shaft and a turning wheel are arranged on both sides of the tensioning beam; the turning wheel can rotate around the turning shaft and tension the steel strand; the turning shaft is installed on the steel plate on the side of the tensioning beam.

[0007] Further, according to the different arrangement forms of the folded line steel strand, a plurality of rows of turning wheels are arranged on the turning shaft, and the number of each row of turning wheels is reasonably set according to the actual needs and the layout of the prestressed tendon, so as to ensure that the steel strand can be properly supported and guided during turning. At the same time, the turning wheel is made of special wear-resistant material, which not only has excellent wear resistance, but also has small friction coefficient, which can further improve the tensioning efficiency while ensuring the service life of the turning wheel.

[0008] Further, the steering wheel has a certain rigidity to ensure that no excessive deformation occurs when bearing the tension of the prestressed tendon, thereby ensuring the accuracy of tensioning. In addition, the steering wheel can flexibly rotate on the steering shaft, which enables the prestressed tendon to smoothly pass through when steering, reduces the resistance generated by friction, and further improves the tensioning efficiency.

[0009] Further, the cross beam body has a small footprint and is suitable for engineering projects with limited construction site area. Not only does it improve construction efficiency, but also reduces construction cost, thereby providing a strong guarantee for the smooth progress of the engineering project.

[0010] Compared with the prior art, the present application has the following beneficial technical effects:

[0011] By arranging the steering shaft and the steering wheel on the cross beam steel structure body, the prestressed tendon can smoothly change direction during steering. The combination of the steering shaft and the steering wheel effectively reduces the friction resistance of the steel strand during steering, thereby improving the tensioning efficiency.

[0012] According to different arrangement forms of the broken line steel strand, a plurality of rows of steering wheels are arranged on the steering shaft, and the number of steering wheels in each row is reasonably set according to actual needs and the layout of the prestressed tendon. This design ensures that the steel strand can be properly supported and guided during steering, thereby further improving the accuracy and efficiency of tensioning.

[0013] In the present application, the steering wheel is made of special wear-resistant material, which not only has excellent wear resistance, but also has a small friction coefficient. The selection of this material not only ensures the service life of the steering wheel, but also further improves the tensioning efficiency. The steering wheel has a certain rigidity and can maintain a stable shape when bearing the tension of the prestressed tendon, thereby avoiding affecting the accuracy of tensioning due to excessive deformation. The steering wheel can flexibly rotate on the steering shaft, which enables the prestressed tendon to smoothly pass through when steering, reduces the resistance generated by friction, and further improves the tensioning efficiency.

[0014] The present application also takes into account the limitation of the construction site, and optimizes the size of the cross beam body to make it have a small footprint and be suitable for engineering projects with limited construction site area. This design improves the construction efficiency, reduces the construction cost, and provides a strong guarantee for the smooth progress of the engineering project. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural view of the prestressed tensioning cross beam with a steering device of the present application;

[0016] In the drawings, the numbers are as follows:

[0017] 1, steel strand; 2, steering wheel; 3, tensioning cross beam; 4, steering shaft. DETAILED DESCRIPTION

[0018] The advantages and effects of the present application can be easily understood by those skilled in the art from the disclosure of the present application. The present application can also be implemented or applied in different specific embodiments, and various modifications or changes can be made to the details in the present application based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0019] It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0020] The present application will be further described below in conjunction with the drawings and embodiments.

[0021] Please refer to Figure 1 Firstly, the prestressed tension beam 3 includes a tension beam 33, and an integrated steering shaft 44 and a steering wheel 22 are arranged on both sides of the tension beam 33. These steering wheels 22 can freely rotate around the steering shaft 44 and are connected with the steel strand 1 on the tension beam to realize force transmission and tension force adjustment during tensioning. The number and arrangement of the steering wheels 2 can be flexibly adjusted according to the arrangement form of the broken-line steel strand, so as to adapt to different structural requirements and changes in tension force distribution. Secondly, the steering shaft 44 is installed on the steel plate on the side of the tension beam 33. This layout not only ensures the stability and safety of the steering wheel 2, but also effectively reduces the structural volume and optimizes the space utilization.

[0022] In the present embodiment, 30-meter T-beam double T-beam is adopted as the production object. Due to the longer span, the 30-meter T-beam needs to bear greater tension force, and therefore 7 rows of steering shafts 4 are arranged on the steering frame to disperse and balance the tension force. In another embodiment, 20-meter double T-beam is adopted, and 4 rows of steering shafts 4 are used due to the structural characteristics. On each row of steering shafts 4, 3 steering wheels 2 are ingeniously arranged. These steering wheels 2 are not simple components, but are made of wear-resistant materials, which have good wear resistance and friction resistance, and can significantly reduce the friction resistance of the steel strand 1 during tensioning. In addition, the steering wheels 2 also have a certain stiffness, which means that they are not easy to deform when bearing tension, ensuring the stability of the steel strand 1 and the accurate transmission of the tension force.

[0023] In the present embodiment, the swivel wheel 2 can rotate freely on the swivel shaft 4. This freedom not only reduces friction, but also allows the steel strand 1 to change direction smoothly during tensioning, avoiding stress concentrations and potential structural damage due to sudden changes in direction.

[0024] Although the present application has been described in detail by the preferred embodiments, it should be appreciated that the above description is not to be considered as limiting the application, the scope of which is to be determined by the appended claims.

Claims

1. A prestressed tensioning beam with a turning device, characterized in that Including tensioning beam (3), both sides of the tensioning beam (3) are provided with integrated steering shaft (4) and steering wheel (2); The steering wheel (2) can rotate around the steering shaft (4) and be tensioned with the steel strand (1).

2. The pre-stressed tensioning beam with a turning device according to claim 1, characterized in that, The number and arrangement of the steering wheel (2) can be adjusted according to the arrangement form of the broken line steel strand.

3. The pre-stressed tensioning beam with a turning device according to claim 1, characterized in that, The steering shaft (4) is installed on the steel plate on the side of the tensioning beam (3).

4. The pre-stressed tensioning beam with a turning device according to claim 1, characterized in that, One side of the tensioning beam (3) is equipped with 7 rows of steering shafts (4) to disperse and balance the tension.

5. The prestressed tensioning beam with a turning device according to claim 1, characterized in that, Three steering wheels (2) are arranged on the single row of steering shafts (4).

Images