Optical fiber double-wheel tensile device
By designing optical fiber double-wheel tensile devices, the sliding connection and step surface structure are used to wrap the wire and the outer skin protective sleeve on the spool to avoid the tension of the optical fiber and the snakeskin stainless steel sleeve, which solves the problem that existing optical fiber tensile devices cannot withstand large amounts. The problem of tension has achieved the full tensile resistance of the wire with the stability of the optical fiber communication function.
Patent Information
- Application Number
- CN202421213156.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-30
AI Technical Summary
Existing fiber optic tensile devices cannot effectively withstand large tension forces, resulting in the tensile resistance of the wire that cannot be fully exerted, and the optical fiber is easily damaged.
An optical fiber double-wheel tensioner is designed, by providing a first through hole and a second through hole on the mounting bracket, the wire-resistant wire and outer cover of the cable are wound around the first spool and the second spool, and The optical fiber and snakeskin stainless steel sleeves do not withstand tensile forces, and use sliding connections and step surface structure to enhance tensile resistance, and use flexible gaskets to prevent cable damage.
It realizes that the fiber optic communication function does not affect the fiber optic communication function when subjected to strong tension, fully exerts the tensile resistance of wires, and improves the service life and stability of fiber optic cables.
Smart Images
Figure CN222354110U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an optical fiber anti-pull device, in particular to an optical fiber double-wheel anti-pull device. Background Art
[0002] The structure of the ultra-fine fiber optic cable includes the optical fiber at the center, the snakeskin stainless steel sheath outside the optical fiber, the anti-drawing wire outside the snakeskin stainless steel sheath, and the outer protective layer outside the anti-drawing wire. Taking the optical fiber cable with an outer diameter of 3mm as an example, the diameter of the optical fiber in the center is only 0.2mm. It is made of special glass. Although it has a certain toughness, it is still very brittle and cannot be wound. It is easy to break when subjected to external force. The outer snakeskin stainless steel sheath is made of stainless steel strips spirally wound into a round tube to protect the optical fiber glass filaments in a loose environment from any external force, but the snakeskin stainless steel sheath cannot be wound and cannot withstand strong external forces, because the stainless steel strips will be straightened under external forces, and the edges of the stainless steel strips are relatively sharp, which will not only fail to protect the optical fiber but also break the optical fiber, or cut the anti-drawing wire and the outer protective layer. The diameter of the anti-drawing wire is very fine, and many anti-drawing wires form a soft anti-drawing layer. The toughness of the anti-drawing wire is good. Thousands of them together have strong tensile strength, but the anti-drawing wire is an extremely fine loose wire with a very smooth texture and is not easy to knot or bind. The outer protective layer is made of wear-resistant PE thermoplastic material, which is soft and tough, but very afraid of being hurt. When the pulling force is large, a blunt angle can break it.
[0003] Based on the structural characteristics of the above-mentioned ultra-fine optical fiber cables, even if the tensile strength of the drawing wire is very strong, the existing tensile joints of ultra-fine optical fiber cables cannot fully exert the tensile strength of the drawing wire. Before the tensile strength of the drawing wire is reached, the optical fiber glass is damaged by external force and cannot be used. Utility Model Content
[0004] The utility model aims to provide an optical fiber double-wheel anti-pull device to solve the problem that the existing optical fiber anti-pull device cannot withstand a large pulling force.
[0005] The utility model is implemented as follows: an optical fiber double-wheel anti-pulling device comprises a mounting bracket, a first through hole and a second through hole are opened on the mounting bracket, the first through hole is located in the middle of the mounting bracket, two arms extending to the same side are arranged on the mounting bracket, a first bobbin and a second bobbin are arranged between the two arms, the axes of the first bobbin and the second bobbin are perpendicular to the axis of the mounting bracket, the first bobbin is fixed between the two arms, the second bobbin is located between the first bobbin and the mounting bracket, and the second bobbin is slidably connected to the arms on both sides.
[0006] As a further improvement of the optical fiber double-wheel tensile device of the utility model, the mounting bracket is a cylindrical structure, and the outer side surfaces of the two support arms coincide with the outer cylindrical surface of the mounting bracket.
[0007] As a further improvement of the optical fiber double-wheel tensile device of the utility model, the support arm includes a first support section and a second support section located on the same straight line, the first support section is connected to the mounting bracket, the second support section is connected to the first support section, the width of the second support section is smaller than the first support section, and a step surface is formed at the connection between the first support section and the second support section.
[0008] As a further improvement of the optical fiber double-wheel tensile device of the utility model, first slide grooves are opened at both ends of the first bobbin, and second slide grooves are opened at both ends of the second bobbin, and the first slide groove and the second slide groove are used to accommodate the support arm.
[0009] As a further improvement of the optical fiber double-wheel tensile device of the utility model, blind holes are provided at both ends of the first spool, a third through hole is opened on the support arm, a pin is inserted into the third through hole and the blind hole, and the first spool is fixed by the pin.
[0010] As a further improvement of the optical fiber double-wheel tensile device of the utility model, a countersunk hole is opened on the end surface of one end of the support arm on the mounting bracket, a flexible gasket is arranged in the countersunk hole, a wire passing hole is opened in the middle of the flexible gasket, and one end of the wire passing hole is a rounded structure.
[0011] As a further improvement of the optical fiber double-wheel tensile device of the utility model, the outlines of the first spool and the second spool in their own axial directions are cylindrical, elliptical or quasi-cylindrical, and at the same time, the outlines of the first spool and the second spool in the axial direction of the mounting bracket are not larger than the outline of the mounting bracket in the axial direction.
[0012] The utility model has a first through hole and a second through hole on the mounting bracket, and the cable is stripped at the position of the anti-tension device, and the anti-tension wire and outer skin protective cover of the cable are separated from the internal optical fiber and snake skin stainless steel cover. The separated anti-tension wire and outer skin protective cover pass through the first through hole and are wound on the first spool and the second spool between the two arms, while the separated optical fiber and snake skin stainless steel cover pass through the second through hole alone and extend forward to connect with the optical fiber connector. In this way, when the utility model is in use, no anti-tension wire and outer skin protective cover of the optical fiber are wound on the spool, and the anti-tension wire and outer skin protective cover bear the tensile force, while the optical fiber and snake skin stainless steel cover do not bear the tensile force at all. When subjected to strong tensile force, no matter how the part wound on the spool is squeezed or stretched, it will not affect the communication function of the optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is an installation structure diagram of the utility model.
[0014] Figure 2 It is a structural diagram of the installation and manufacture of the utility model and the support arm.
[0015] Figure 3 yes Figure 2 AA view.
[0016] Figure 4 It is a structural diagram of the first spool of the utility model.
[0017] Figure 5 yes Figure 4 End view of .
[0018] Figure 6 It is a structural diagram of the second spool of the utility model.
[0019] Figure 7 It is a reference diagram of the use status of the utility model.
[0020] In the figure: 1. mounting bracket; 2. support arm; 3. first spool; 4. second spool; 5. flexible gasket; 6. pin; 7. cable; 8. optical fiber; 1-1. first through hole; 1-2. second through hole; 1-3. countersunk hole; 2-1. first supporting section; 2-2. second supporting section; 2-3. third through hole; 3-1. blind hole; 3-2. first slide groove; 4-1. second slide groove. DETAILED DESCRIPTION
[0021] The structure of the utility model is further described below in conjunction with the accompanying drawings.
[0022] like Figure 1 As shown, the utility model is a double-wheel tension device for optical fiber 8, comprising a mounting frame, a support arm 2, a first bobbin 3 and a second bobbin 4.
[0023] A first through hole 1-1 and a second through hole 1-2 are formed on the mounting bracket 1, wherein the first through hole 1-1 is located in the middle of the mounting bracket 1, and two arms 2 extending to the same side are provided on the mounting bracket 1, and a first bobbin 3 and a second bobbin 4 are provided between the two arms 2, wherein the axes of the first bobbin 3 and the second bobbin 4 are perpendicular to the axis of the mounting bracket 1, and the first bobbin 3 is fixed between the two arms 2, and the second bobbin 4 is located between the first bobbin 3 and the mounting bracket 1, and the second bobbin 4 is slidably connected to the arms 2 on both sides.
[0024] Among them, Figure 2 , Figure 3As shown, the mounting bracket 1 is a cylindrical structure, and two arms 2 extend outward from one end surface of the mounting bracket 1. The two arms 2 are respectively located on both sides of the mounting bracket 1, and the outer side surfaces of the two arms 2 coincide with the outer cylindrical surface of the mounting bracket 1, so that the mounting bracket 1 and the arms 2 as a whole can be smoothly placed in the connector sleeve.
[0025] The diameter of the first through hole 1-1 on the mounting bracket 1 is larger than that of the second through hole 1-2. When the cable 7 passes through the connector, the outer protective cover is peeled off, and the internal optical fiber 8 and the snake-shaped stainless steel cover are taken out from the outer protective cover to one side. The outer protective cover and the tensile wire pass through the first through hole 1-1, and the optical fiber 8 and the snake-shaped stainless steel cover pass through the first through hole 1-1.
[0026] The second through hole 1-2 is generally located at the edge of the mounting bracket 1, and the second through hole 1-2 is located on one side or both sides of the first bobbin 3 and the second bobbin 4. When in use, the corresponding second through hole 1-2 can be selected for use.
[0027] As a further improvement of the optical fiber 8 double-wheel tensile device of the utility model, the support arm 2 includes a first support segment 2-1 and a second support segment 2-2 located on the same straight line, the first support segment 2-1 is connected to the mounting bracket 1, the second support segment 2-2 is connected to the first support segment 2-1, the width of the second support segment 2-2 is smaller than the first support segment 2-1, and a step surface is formed at the connection between the first support segment 2-1 and the second support segment 2-2.
[0028] like Figure 4 , Figure 5 As shown, first slide grooves 3-2 are provided at both ends of the first spool 3. Figure 6 As shown, a second slide groove 4 - 1 is opened at both ends of the second spool 4 , and the first slide groove 3 - 2 and the second slide groove 4 - 1 are used to accommodate the support arm 2 .
[0029] Among them, the second support section 2-2 is located in the first slide groove 3-2, and the first support section 2-1 is located in the second slide groove 4-1, and the two ends of the second bobbin 4 can slide along the first support section 2-1, and the two ends of the first bobbin 3 pass through the second support section 2-2.
[0030] The first bobbin 3 is fixed to the support arm 2 by the step surface between the first support section 2-1 and the second support section 2-2. After both ends of the first bobbin 3 slide to the step surface position, the first bobbin 3 is supported by the step surface.
[0031] In addition, blind holes 3-1 are provided at both ends of the first bobbin 3, and a third through hole 2-3 is provided on the support arm 2. Specifically, the third through hole 2-3 is provided on the second supporting section 2-2, and a pin 6 is passed through the third through hole 2-3 and the blind hole 3-1, and the first bobbin 3 is fixed on the second supporting section 2-2 by the pin 6.
[0032] The cooperation between the pin shaft 6 and the step surface can enable the first spool 3 to withstand a large force, thereby ensuring the structural strength and tensile strength of the utility model.
[0033] The first bobbin 3 and the second bobbin 4 have a cylindrical, elliptical or quasi-cylindrical profile in their own axial direction, and the profiles of the first bobbin 3 and the second bobbin 4 in the axial direction of the mounting bracket 1 are not larger than the profile of the mounting bracket 1 in the axial direction. In this way, the first bobbin 3 and the second bobbin 4 are not only cylindrical in themselves, but also have a profile that does not exceed the circular profile of the mounting bracket 1 in the axial direction of the mounting bracket 1, so that the mounting bracket 1 and the arm 2 with the first bobbin 3 and the second bobbin 4 installed can be smoothly placed in the connector housing.
[0034] A countersunk hole 1-3 is provided on the end surface of one end of the support arm 2 on the mounting bracket 1, and a flexible gasket 5 is provided in the countersunk hole 1-3. The flexible gasket 5 can be made of nylon or rubber. A wire hole is provided in the middle of the flexible gasket 5, and one end of the wire hole is a rounded structure. When the cable 7 passes through the wire hole, the smooth rounded corner part at the end of the wire hole can prevent the cable 7 (the outer protective sheath and the anti-drawing wire part) from being broken.
[0035] like Figure 7 As shown, when the utility model is used, the cable 7 is stripped at the position of the anti-tension device, and the anti-tension wire, outer skin protective sleeve part of the cable 7 are separated from the internal optical fiber 8 and snake skin stainless steel sleeve part, and the separated anti-tension wire and outer skin protective sleeve part pass through the first through hole 1-1 and are wound on the first spool 3 and the second spool 4 between the two arms 2, while the separated optical fiber 8 and snake skin stainless steel sleeve part pass through the second through hole 1-2 alone and extend forward to connect with the optical fiber 8 connector. When winding, the anti-tension wire and the outer skin protective sleeve part are first wound around the second spool 4 from the side opposite to the optical fiber 8 part for two turns, and the thread ends are left on the side where the optical fiber 8 part is located, and then wound around the first spool 3 for one turn, and then wound around the first spool 3 for a second turn, and when the second turn is tightened, the thread ends are passed from under the second turn, and the thread ends are tightened and passed from under the second spool 4, and the excess thread ends are cut off.
[0036] In this way, when the utility model is in use, the anti-drawing wire and outer protective sleeve of the optical fiber 8 are not wound on the bobbin, and the anti-drawing wire and outer protective sleeve bear the tension, while the optical fiber 8 and the snakeskin stainless steel sleeve do not bear the tension at all, and only the communication function is realized. When the cable 7 is subjected to tension, the tension acts on the first bobbin 3 and the second bobbin 4. After receiving the tension, the second bobbin 4 moves along the support arm 2, thereby pressing the cable 7. The cable 7 located on the first bobbin 3 passes under the second circle when passing out, and after being tightened, the cable 7 can be pressed under the second circle, thereby ensuring that it has extremely strong tensile strength and can fully exert the tensile strength of all anti-drawing wires.
Claims
1. An optical fiber double-wheel tensioner, characterized in that: It includes a mounting bracket, on which a first through hole and a second through hole are opened, the first through hole is located in the middle of the mounting bracket, and the mounting bracket is provided with two arms extending to the same side, and a first bobbin and a second bobbin are provided between the two arms, and the axes of the first bobbin and the second bobbin are perpendicular to the axis of the mounting bracket, the first bobbin is fixed between the two arms, the second bobbin is located between the first bobbin and the mounting bracket, and the second bobbin is slidably connected to the arms on both sides.
2. The optical fiber double-wheel tension device according to claim 1, characterized in that: The mounting bracket is a cylindrical structure, and the outer side surfaces of the two support arms coincide with the outer cylindrical surface of the mounting bracket.
3. The optical fiber double-wheel tension device according to claim 1, characterized in that: The support arm includes a first support segment and a second support segment located on the same straight line, the first support segment is connected to the mounting bracket, the second support segment is connected to the first support segment, the width of the second support segment is smaller than the first support segment, and a step surface is formed at the connection between the first support segment and the second support segment.
4. The optical fiber double-wheel tension device according to claim 1, characterized in that: A first slide groove is provided at both ends of the first bobbin, and a second slide groove is provided at both ends of the second bobbin. The first slide groove and the second slide groove are used to accommodate the support arm.
5. The optical fiber double-wheel tension device according to claim 1, characterized in that: Blind holes are arranged at both ends of the first bobbin, a third through hole is opened on the support arm, a pin is inserted into the third through hole and the blind hole, and the first bobbin is fixed by the pin.
6. The optical fiber double-wheel tension device according to claim 1, characterized in that: A countersunk hole is provided on the end surface of one end of the support arm on the mounting bracket, a flexible gasket is arranged in the countersunk hole, a wire hole is provided in the middle of the flexible gasket, and one end of the wire hole is a rounded structure.
7. The optical fiber double-wheel tension device according to claim 1, characterized in that: The contours of the first spool and the second spool in their own axial direction are cylindrical, elliptical or quasi-cylindrical, and the contours of the first spool and the second spool in the axial direction of the mounting bracket are not larger than the contour of the mounting bracket in the axial direction.