Prestress applying device and method for fiber composite material rod

Abstract

The invention relates to a prestress applying device and method for a fiber composite material rod, and relates to the field of fiber composite material engineering application. Comprising a driving steel wheel, a driven steel wheel, a tension controller and a limiting ring, anchorage devices are welded to the driving steel wheel and the driven steel wheel, and fiber composite material rods wound on the driving steel wheel and the driven steel wheel are fixed through the anchorage devices. The tension controller is located between the driving steel wheel and the driven steel wheel and used for tensioning the fiber composite material rod and monitoring the tension value in real time. The limiting ring is arranged at the position of the driving steel wheel and used for controlling the winding radius of the fiber composite material rod on the driving steel wheel. The device is easy to operate and convenient to control, and prestress application of the fiber composite rod can be effectively completed.

Description

Technical Field

[0001] The invention relates to the field of fiber composite material engineering applications, and in particular to a prestressing device and method for a fiber composite material rod. Background Art

[0002] Prestressed steel cylinder concrete pipe (PCCP) is a composite pipe composed of prestressed steel wire, steel cylinder and concrete. In order to solve the problems of wire breakage and corrosion in PCCP, it is planned to use prestressed fiber composite materials to replace steel wire to form a new structure, give full play to the corrosion resistance of fiber composite materials, and improve the durability of PCCP.

[0003] When prestressed fiber composite rods replace prestressed steel wires to form a new structure, the fiber composite rods are in a bent state. Due to the poor shear resistance of the fiber composite materials themselves and the difficulty in anchoring, there is currently a lack of prestressing devices for fiber composite rods under bending conditions, and it is impossible to stably and accurately provide and maintain a certain prestress to the fiber composite rods, resulting in difficulties in the formation of new structures.

[0004] It can be seen that the application of prestress under the bending condition of fiber composite rods is a key problem that needs to be solved urgently. Therefore, in order to further promote the use of prestressed fiber composite rods to replace prestressed steel wires to form new PCCP structures, a prestressing device and method for fiber composite rods is urgently needed. Summary of the invention

[0005] In view of this, the present invention aims to propose a prestressing device and method for a fiber composite material rod, so as to solve the problem of prestressing the fiber composite material rod under bending conditions.

[0006] To achieve the above-mentioned purpose, the present invention provides a prestressing device for a fiber composite material rod, comprising: a driving steel wheel, a driven steel wheel, a tension controller and a limit ring;

[0007] Anchors are welded on the driving steel wheel and the driven steel wheel, and the fiber composite material rods wound on the driving steel wheel and the driven steel wheel are fixed by the anchors;

[0008] The tension controller is located between the active steel wheel and the driven steel wheel, and is used to tighten the fiber composite material rod and monitor the tension value in real time;

[0009] The limiting ring is arranged at the position of the active steel wheel and is used to control the winding radius of the fiber composite material rod on the active steel wheel.

[0010] Furthermore, it also includes a rotating motor, and the active steel wheel and the driven steel wheel are both driven by the rotating motor.

[0011] Further, the tension controller includes three guide wheels to tighten the fiber composite rod. A pressure sensor is built into the middle guide wheel to monitor the tension value in real time.

[0012] Further, the limiting ring is placed on the slide rail and is tractioned by a driving motor to move at a constant speed. Its moving direction is the same as the axis direction of the driving steel wheel. The winding radius of the fiber composite rod on the driving steel wheel is controlled by the moving speed, and the central position is on the same horizontal plane as the lowermost side of the fiber composite rod.

[0013] A method for applying prestress to a fiber composite rod includes the following steps:

[0014] Step 1: Anchor the fiber composite rod on the anchor on the driven steel wheel.

[0015] Step 2: Wind the fiber composite rod on the driven steel wheel, extend from the lowermost end, pass through the three guide wheels and the limiting ring of the tension controller in sequence, and finally anchor it on the anchor of the driving steel wheel.

[0016] Step 3: Start the rotating motor of the driving steel wheel to drive the driving steel wheel to rotate counterclockwise. At the same time, keep the driven steel wheel fixed to pre-tension the fiber composite rod so that the fiber composite rod is in close contact with the driving steel wheel and the driven steel wheel.

[0017] Step 4: When the driving steel wheel starts, synchronously make the limiting ring move uniformly along the axis direction of the driving steel wheel on the slide rail.

[0018] Step 5: Until the reading of the tension sensor increases regularly, start the driven steel wheel and gradually adjust the speed of the driven steel wheel.

[0019] Step 6: When the reading of the tension sensor reaches the required prestress reading, make the speeds of the driving steel wheel and the driven steel wheel consistent to complete the prestress application to the fiber composite rod.

[0020] The beneficial effects of the present invention are as follows:

[0021] The operation of the present invention is simple and the control is convenient, and it can effectively complete the prestress application to the fiber composite rod. By adding anchors on the driving steel wheel and the driven steel wheel, the problem of difficult anchoring of the current fiber composite rod is solved. And by setting the tension controller and the limiting ring, it can stably and accurately provide a definite prestress to the fiber composite rod and maintain it. Description of the Drawings

[0022] Figure 1 It is the overall structural view of the present invention.

[0023] In the figure: 1 - anchor, 2 - driven steel wheel, 3 - rotating motor, 4 - fiber composite material rod, 5 - tension controller, 6 - support platform, 7 - slide rail, 8 - limit ring, 9 - driving steel wheel. Specific embodiments

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of the present invention here. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily need to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0026] In the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0027] Moreover, in addition to being able to represent an orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0028] In addition, the terms "install", "set", "provide", "connect", "link", "socket" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] To achieve the above object, as Figure 1 shown, the present invention provides a prestress application device for a fiber composite rod, which is used for applying prestress to the fiber composite rod 4 under bending conditions, and includes: a driving steel wheel 9, a driven steel wheel 2, a tension controller 5 and a limiting ring 8;

[0030] An anchor 1 is welded on both the driving steel wheel 9 and the driven steel wheel 2, and the fiber composite rod 4 wound around the driving steel wheel 9 and the driven steel wheel 2 is fixed by the anchor 1;

[0031] The tension controller 5 is located between the driving steel wheel 9 and the driven steel wheel 2, and is used to tension the fiber composite rod 4 and monitor the tension value in real time;

[0032] The limiting ring 8 is arranged at the position of the driving steel wheel 9 and is used to control the winding radius of the fiber composite rod 4 on the driving steel wheel 9.

[0033] The present invention further includes a rotating motor 3, and both the driving steel wheel 9 and the driven steel wheel 2 are driven by the rotating motor 3.

[0034] The tension controller 5 includes three guide wheels to tension the fiber composite rod 4. The middle guide wheel is installed on the support platform 6, and its position is higher than that of the two side guide wheels. And a pressure sensor is built in the middle guide wheel to monitor the tension value in real time.

[0035] The limiting ring 8 is placed on the slide rail 7 and is tractioned by a driving motor to move at a constant speed. Its moving direction is the same as the axial direction of the driving steel wheel 9. The winding radius of the fiber composite rod 4 on the driving steel wheel 9 is controlled by the moving speed, and the central position is on the same horizontal plane as the lowermost side of the fiber composite rod 4.

[0036] One end of the fiber composite rod 4 is anchored on the anchor 1 of the driving steel wheel 9 for winding, guided through the tension controller 5 and the limiting ring 8, and the fiber composite rod is pre-wound on the driven steel wheel 2, and finally anchored on the anchor 1 of the driven steel wheel 2, and its lower end always remains horizontal. After both ends of the fiber composite rod 4 are anchored, the rotating motor 3 is started, and prestress is applied by rotation. Based on the indication of the tension controller 5, the prestress is regulated to complete the prestress loading of the fiber composite rod 4.

[0037] The present invention also provides a prestress application method for a fiber composite rod, including the following steps:

[0038] Step 1: Anchor the fiber composite rod on the anchor on the driven steel wheel;

[0039] Step 2: Wind the fiber composite material rod on the driven steel wheel, extend it from the lowermost end, and successively pass through the three guide wheels and the limit ring of the tension controller, and finally anchor it on the anchor of the driving steel wheel;

[0040] Step 3: Start the rotation motor of the driving steel wheel to drive the driving steel wheel to rotate counterclockwise, and at the same time keep the driven steel wheel fixed to perform pre-tensioning of the fiber composite material rod, so that the fiber composite material rod is in close contact with the driving steel wheel and the driven steel wheel;

[0041] Step 4: When the driving steel wheel starts, synchronously move the limit ring uniformly along the axis direction of the driving steel wheel on the slide rail;

[0042] Step 5: Until the reading of the tension sensor increases regularly, start the driven steel wheel and gradually adjust the speed of the driven steel wheel;

[0043] Step 6: When the reading of the tension sensor reaches the required pre-stress reading, make the speeds of the driving steel wheel and the driven steel wheel consistent to complete the application of pre-stress to the fiber composite material rod.

[0044] The operation of the present invention is simple and the control is convenient, and it can effectively complete the application of pre-stress to the fiber composite material rod; by adding anchors on the driving steel wheel and the driven steel wheel, the problem of difficult anchoring of the current fiber composite material rod is solved, and by setting a tension controller and a limit ring, it is possible to stably and accurately provide and maintain a definite pre-stress for the fiber composite material rod.

[0045] The above is only a preferred embodiment of the present invention, and it does not limit the technical scope of the present invention. Therefore, any minor modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A prestressing device for a fiber composite material rod, characterized in that: include: Active steel wheel, driven steel wheel, tension controller and limit ring; Anchors are welded on the driving steel wheel and the driven steel wheel, and the fiber composite material rods wound on the driving steel wheel and the driven steel wheel are fixed by the anchors; The tension controller is located between the active steel wheel and the driven steel wheel, and is used to tighten the fiber composite material rod and monitor the tension value in real time; The limiting ring is arranged at the position of the active steel wheel and is used to control the winding radius of the fiber composite material rod on the active steel wheel.

2. A prestressing device for a fiber composite material rod according to claim 1, characterized in that: It also includes a rotating motor, and the driving steel wheel and the driven steel wheel are both driven by the rotating motor.

3. A prestressing device for a fiber composite material rod according to claim 1, characterized in that: The tension controller includes three guide wheels to tighten the fiber composite rod. The middle guide wheel has a built-in pressure sensor to monitor the tension value in real time.

4. A prestressing device for a fiber composite material rod according to claim 1 or 3, characterized in that: The limit ring is placed on the slide rail and is pulled by a driving motor to move at a uniform speed. Its moving direction is consistent with the axial direction of the active steel wheel. The winding radius of the fiber composite material rod on the active steel wheel is controlled by the moving rate. The center position is in the same horizontal plane as the lower side of the fiber composite material rod.

5. A method for applying prestress to a fiber composite rod, characterized in that: The following steps are involved: Step 1: Anchor the fiber composite rod to the anchor on the driven steel wheel; Step 2: Wrap the fiber composite rod around the driven steel wheel, extend it from the bottom, pass through the three guide wheels and limit rings of the tension controller in sequence, and finally anchor it on the anchor of the driving steel wheel; Step 3: Start the rotating motor of the active steel wheel to drive the active steel wheel to rotate counterclockwise, while keeping the driven steel wheel fixed, and pre-tension the fiber composite rod to make the fiber composite rod in close contact with the active steel wheel and the driven steel wheel; Step 4: When the active steel wheel starts, the limit ring is synchronously moved at a uniform speed along the axis direction of the active steel wheel on the slide rail; Step 5: Until the tension sensor reading increases regularly, start the driven steel wheel and gradually adjust the speed of the driven steel wheel; Step 6: When the tension sensor reading reaches the required prestress reading, the speeds of the active steel wheel and the driven steel wheel are kept consistent to complete the application of prestress to the fiber composite rod.

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