CN110255301B - A Distributed Optical Fiber Sensing BFRP Smart Bar Production Device - Google Patents

Abstract

The invention relates to the technical field of intelligent ribs, in particular to a distributed fiber-optic sensing BFRP intelligent rib production device which comprises a support, a driving shaft, a boosting shaft and a fiber-optic transmission system, wherein the boosting shaft is used for pushing BFRP rib materials; the driving shaft is used for driving the boosting shaft and the optical fiber transmission system; the boosting shaft is coaxial with the BFRP rib material to be processed and is used for pushing the BFRP rib material to rotate and advance along the axial direction; the optical fiber transmission system comprises a conveying belt for transmitting optical fibers, and the moving direction of the conveying belt is perpendicular to the axial direction of the boosting shaft. The driving shaft and the boosting shaft are arranged on the support, the driving shaft drives the boosting shaft to rotate and advance along the axial direction, so that the BFRP rib material is pushed to advance along the axial direction, meanwhile, the driving shaft drives the conveying belt of the optical fiber transmission system to convey the optical fibers, the optical fibers are perpendicular to the axial direction of the BFRP rib material, and the optical fibers are continuously wound while the rib material rotates and advances along the axial direction, so that the production of the distributed optical fiber sensing BFRP intelligent rib is realized.

Description

A Distributed Optical Fiber Sensing BFRP Smart Bar Production Device

technical field

The invention relates to the technical field of smart bars, and more particularly, to a distributed optical fiber sensing BFRP smart bar production device.

Background technique

BFRP bars are basalt fiber reinforced plastic steel bars, which have the advantages of high strength, fatigue resistance, and good resistance. In recent years, they have been more and more widely used in engineering. Due to the low modulus of elasticity of BFRP bars, the bond-slip effect with concrete is different from that of general-purpose rebars. Therefore, placing BFRP bars in a three-point bending beam will affect the crack initiation performance of the beam. In order to study the crack initiation performance of BFRP reinforced concrete structures and to explore the influence of the bond-slip between BFRP reinforcement and concrete on the development of cracks, it is necessary to make concrete three-point bending beams with BFRP reinforcement as the composite material and reserve cracks. Because the use of point sensors to monitor the bond-slip performance of BFRP bars is not effective, important data is easily missed and is easily damaged. Therefore, distributed optical fiber sensors are used to monitor the bond-slip and strain information of BFRP bars in an appropriate manner. The accuracy and completeness of the data can be guaranteed.

Common smart ribs are divided into the following categories: the grooved type on the surface of the rib, which means that the surface of the rib is grooved by grinding, and the distributed optical fiber is placed in it and packaged with colloid; the shaft of the rib is punched , refers to the use of laser perforation inside the rib, and then penetrates it with distributed optical fiber, and uses colloid to encapsulate; the surface winding of the rib refers to the arrangement of the distributed optical fiber on the surface of the rib by winding, and glue is used for bonding. fixed. The above methods have advantages and disadvantages, and the slotted type process is the simplest, but the slotted type has higher requirements on the reinforcement, especially for the wire harness type reinforcement, the surface slotting will affect its mechanical properties; punching type requirements However, the collection of strain information on the surface of the rib is not accurate, and the requirements for the packaging material are very high; the winding type has better strain collection on the surface of the rib, and can increase the monitoring of the sensor. Accuracy, but there are many difficulties in the helical arrangement of distributed fibers on the surface of BFRP. Summarizing the current production status of smart bars, there are mainly two problems: first, the winding level of the optical fiber is difficult to guarantee for products formed by manual winding, and the error caused by uneven spacing cannot be ignored; second, winding Optical fibers are time-consuming and labor-intensive, and there are certain requirements for packaging materials. Therefore, there is a need for a distributed optical fiber sensing BFRP smart bar production device that can automatically produce uniform winding.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome at least one defect of the prior art, and to provide a distributed optical fiber sensing BFRP smart bar production device, which can produce distributed optical fiber sensing BFRP smart bars.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is:

Provide a distributed optical fiber sensing BFRP smart bar production device, including a support, a drive shaft, a booster shaft for pushing BFRP bars, and an optical fiber transmission system; the drive shaft is used to drive the booster shaft and all The optical fiber transmission system; the booster shaft is coaxial with the BFRP bar to be processed, and is used to push the BFRP bar to rotate and advance along the axial direction; the optical fiber transmission system includes a conveyor belt for transmitting optical fibers, and the conveyor belt The movement direction is perpendicular to the axial direction of the booster shaft.

In the present invention, a drive shaft and a booster shaft are arranged on the support, and the drive shaft drives the booster shaft to rotate and advance in the axial direction, thereby pushing the BFRP bars to advance in the axial direction, and at the same time, the drive shaft drives the conveyor belt of the optical fiber transmission system to transport the optical fiber , the optical fiber is perpendicular to the axial direction of the BFRP bar, and the fiber is continuously wound while the bar rotates along the axial direction, thereby realizing the production of distributed optical fiber sensing BFRP smart bars.

Further, the support is provided with two fixed plates arranged in parallel, and the fixed plates are respectively provided with a coaxially arranged guide hole and a coaxially arranged sleeve hole; the drive shaft is rotatably sleeved on the guide hole. The booster shaft includes a collar and a threaded rod, the collar is rotatably sleeved on the socket hole, and rotates synchronously with the drive shaft, and the threaded rod is threaded to fit the sleeve connected to the collar. The drive shaft controls the rotation of the collar, and the threaded rod is threadedly matched with the collar, so that the threaded rod can be controlled to advance in the axial direction.

Further, the optical fiber transmission system includes a portal frame and a transmission wheel for driving the conveyor belt.

Further, the portal frame includes a winding shaft parallel to the driving shaft and two connecting rods arranged perpendicular to the driving shaft, one end of the connecting rod is fixedly connected with the winding shaft, and the other end is provided with a rotating sleeve. a sleeve attached to the drive shaft; the drive wheel includes a first drive wheel and a second drive wheel, the first drive drive wheel is sleeved on the drive shaft and rotates synchronously with the drive shaft, the first drive drive wheel Two transmission wheels are rotatably sleeved on the portal frame, and the first transmission wheel and the second transmission wheel are connected by a conveyor belt and rotate synchronously. The gantry rotates relative to the drive shaft, and the transmission wheel rotates synchronously with the drive shaft, which can drive the conveyor belt to transport the optical fiber.

Further, a notch is provided on the drive shaft, and the sleeve is sleeved on the notch. The notches are provided to allow the gantry to slide over the drive shaft.

Further, the drive shaft is fixedly provided with a first transmission gear, and the outer side of the collar is fixedly provided with a second transmission gear, and the first transmission gear is engaged with the second transmission gear.

Further, the connection between the booster shaft and the BFRP bar is provided with a jacket for clamping the BFRP bar. The jacket can fix the BFRP bar and prevent the bar from slipping.

Further, the fixing plate is provided with a stator for axially fixing the drive shaft.

Further, the support is provided with not less than one auxiliary support plate, the auxiliary support plate is provided with an auxiliary guide hole, and the guide hole and the auxiliary guide hole are coaxial. The auxiliary support plate can improve the structural strength of the device.

Further, the optical fiber transmission system is arranged on a side away from the booster shaft.

Compared with the prior art, the beneficial effects of the present invention are:

The distributed optical fiber sensing BFRP intelligent rib production device of the present invention is provided with a drive shaft and a booster shaft on the support, and the drive shaft drives the booster shaft to rotate and advance in the axial direction, so as to push the BFRP rib material to advance in the axial direction, and simultaneously drive The conveyor belt of the shaft-driven optical fiber transmission system transports the optical fiber, and the optical fiber is perpendicular to the axial direction of the BFRP rib. While the rib is advancing in the axial direction, the optical fiber is continuously wound, thereby realizing the production of distributed optical fiber sensing BFRP smart rib. The invention has simple structure, low cost and good application prospect.

Description of drawings

FIG. 1 is a schematic structural diagram of a distributed optical fiber sensing BFRP smart bar production device of the present invention.

Figure 2 is a schematic diagram of the structure of the support.

FIG. 3 is a schematic diagram of the structure of the drive shaft.

Figure 4 is a schematic view of the structure of the collar.

Figure 5 is a schematic diagram of the structure of the threaded rod.

FIG. 6 is a schematic diagram of the structure of the portal frame.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments. Among them, the accompanying drawings are only used for exemplary description, and they are only schematic diagrams, not physical drawings, and should not be construed as restrictions on this patent; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings will be omitted, The enlargement or reduction does not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the accompanying drawings may be omitted.

The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms “upper”, “lower”, “left” and “right” The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, with a specific orientation. Orientation structure and operation, so the terms describing the positional relationship in the accompanying drawings are only used for exemplary illustration, and should not be construed as a limitation on the present patent. Those of ordinary skill in the art can understand the specific meanings of the above terms according to specific situations.

Example 1

Figures 1 to 6 show the first embodiment of a distributed optical fiber sensing BFRP smart bar production device of the present invention. As shown in Figure 1, the distributed optical fiber sensing BFRP smart bar production device includes a support 1, a drive shaft 2, a booster shaft 3 for pushing BFRP bars, and an optical fiber transmission system; the drive shaft 2 is used to drive the booster shaft 3 and the optical fiber transmission system; the booster shaft 3 is coaxial with the BFRP bar to be processed, and is used to push the BFRP bar to rotate and advance in the axial direction; the optical fiber transmission system includes a conveyor belt 4 for transmitting optical fibers, and the direction of movement of the conveyor belt 4 It is perpendicular to the axis of the booster shaft 3 . The optical fiber transmission system is arranged on the side away from the booster shaft 3 .

In the present invention, a drive shaft 2 and a booster shaft 3 are arranged on the support, and the drive shaft 2 drives the booster shaft 3 to rotate and advance in the axial direction, thereby pushing the BFRP bars to advance in the axial direction, and at the same time, the drive shaft 2 drives the optical fiber transmission system The conveyor belt 4 conveys the optical fiber, and the optical fiber is perpendicular to the axial direction of the BFRP rib. While the rib rotates and advances in the axial direction, the optical fiber is continuously wound, thereby realizing the production of distributed optical fiber sensing BFRP smart rib.

As shown in FIG. 2 , the support 1 is provided with two parallel fixing plates 11 , and the fixing plates 11 are respectively provided with coaxially arranged guide holes 111 and coaxially arranged sleeve holes 112 . The support 1 is provided with not less than one auxiliary support plate 12 , and in this embodiment, there are three auxiliary support plates 12 . The auxiliary support plate 12 is provided with auxiliary guide holes, and the guide holes 111 and the auxiliary guide holes are coaxial.

As shown in FIG. 2 and FIG. 3 , the drive shaft 2 is rotatably sleeved on the guide hole 111 and is driven to rotate by the drive device.

As shown in Figures 4 and 5, the booster shaft 3 includes a collar 31 and a threaded rod 32. The collar 31 is rotatably sleeved on the sleeve hole 112 and rotates synchronously with the drive shaft 2. The threaded rod 32 is threadedly sleeved on the sleeve Ring 31. A jacket 321 for clamping the BFRP bar is provided at the connection between the booster shaft 3 and the BFRP bar.

Wherein, the drive shaft 2 is fixedly provided with a first transmission gear 21 , and the outer side of the collar 31 is fixedly provided with a second transmission gear 311 , and the first transmission gear 21 and the second transmission gear 311 are engaged with each other. The fixed plate 11 is provided with a stator 22 for axially fixing the drive shaft 2 .

As shown in FIG. 1 and FIG. 6 , the optical fiber transmission system includes a gantry 5 and a transmission wheel for driving the conveyor belt 4 . The portal frame 5 includes a winding shaft 52 parallel to the driving shaft 2 and two connecting rods 51 arranged perpendicular to the driving shaft 2. One end of the connecting rod 51 is fixedly connected with the winding shaft 52, and the other end is provided with a sleeve that is rotatably sleeved on the driving shaft 2. The transmission wheel includes a first transmission wheel 61 and a second transmission wheel 62, the first transmission transmission wheel 61 is sleeved on the drive shaft 2 and rotates synchronously with the drive shaft 2, and the second transmission wheel 62 is rotated and sleeved on the portal frame 5 , the first transmission wheel 61 and the second transmission wheel 62 are connected by the conveyor belt 4 and rotate synchronously. The drive shaft 2 is provided with a notch, and the sleeve is sleeved on the notch.

When using the distributed optical fiber sensing BFRP smart rib production device provided by the present invention, the rib to be processed is first fixed on the jacket 321 of the booster shaft 3, and one end of the optical fiber on the conveyor belt is fixed on the rib , the other end is stretched by constant force. The drive shaft 2 rotates, and the conveyor belt 4 and the booster shaft 3 rotate under the drive of the drive shaft; the rib rotates and advances continuously, and the conveyor belt 3 transports the optical fiber to the rib for continuous winding, thus completing the distributed optical fiber sensing BFRP intelligent Rib production.

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (9)

1. A distributed optical fiber sensing BFRP intelligent rib production device is characterized by comprising a support (1), a driving shaft (2), a boosting shaft (3) for pushing BFRP rib materials to move and an optical fiber transmission system; the driving shaft (2) is used for driving the boosting shaft (3) and the optical fiber transmission system; the boosting shaft (3) is coaxial with the BFRP rib material to be processed and is used for pushing the BFRP rib material to rotate and advance along the axial direction; the optical fiber transmission system comprises a conveying belt (4) for transmitting optical fibers, wherein the moving direction of the conveying belt (4) is vertical to the axial direction of the boosting shaft (3);

the support (1) is provided with two fixing plates (11) which are arranged in parallel, and the fixing plates (11) are respectively provided with guide holes (111) and trepanning holes (112) which are coaxially arranged;

the driving shaft (2) is rotatably sleeved on the guide hole (111);

the boosting shaft (3) comprises a sleeve ring (31) and a threaded rod (32), the sleeve ring (31) is rotatably sleeved on the sleeve hole (112) and synchronously rotates with the driving shaft (2), and the threaded rod (32) is sleeved on the sleeve ring (31) in a threaded fit mode.

2. The distributed fiber sensing BFRP smart bar production apparatus of claim 1, wherein the fiber transport system comprises a gantry (5) and a drive wheel for driving the conveyor belt (4).

3. The distributed fiber sensing BFRP intelligent rib production apparatus of claim 2 wherein:

the door frame (5) comprises a winding shaft (52) parallel to the driving shaft (2) and two connecting rods (51) perpendicular to the driving shaft (2), one end of each connecting rod (51) is fixedly connected with the winding shaft (52), and the other end of each connecting rod (51) is provided with a sleeve rotatably sleeved on the driving shaft (2);

the drive wheel includes first drive wheel (61) and second drive wheel (62), first drive wheel (61) cup joint in drive shaft (2) and with drive shaft (2) synchronous rotation, second drive wheel (62) rotate cup joint in portal frame (5), first drive wheel (61) with second drive wheel (62) are connected and synchronous rotation through conveyer belt (4).

4. The distributed fiber sensing BFRP intelligent rib production apparatus of claim 3 wherein said drive shaft (2) is provided with a notch and said sleeve is sleeved on said notch.

5. The distributed optical fiber sensing BFRP intelligent rib production apparatus according to claim 1, wherein said driving shaft (2) is fixedly provided with a first transmission gear (21), the outside of said collar (31) is fixedly provided with a second transmission gear (311), said first transmission gear (21) and said second transmission gear (311) are meshed.

6. The distributed fiber sensing BFRP intelligent rib production apparatus of claim 1 wherein said boost shaft (3) and said BFRP rib junction is provided with a jacket (321) for clamping BFRP rib.

7. The distributed fiber sensing BFRP smart bar production apparatus according to claim 1, wherein a stator (22) for axially fixing the driving shaft (2) is provided on the fixing plate (11).

8. The distributed fiber sensing BFRP intelligent rib production apparatus of claim 1 wherein said pedestal (1) is provided with no less than one auxiliary support plate (12), said auxiliary support plate (12) is provided with auxiliary guide holes, said guide hole (111) and said auxiliary guide holes are coaxial.

9. A distributed fibre sensing BFRP smart bar production apparatus as claimed in any of claims 1 to 4 wherein said fibre transmission system is located on a side remote from said booster shaft (3).

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