CN216695856U

CN216695856U - Automatic detection apparatus for crooked under circulating optical cable tension

Info

Publication number: CN216695856U
Application number: CN202123164442.4U
Authority: CN
Inventors: 于春花; 段少军; 田巧丽; 王颖; 余琴芳; 曹蓓蓓; 陈瑞
Original assignee: Yangtze Optical Fibre and Cable Co Ltd
Current assignee: Yangtze Optical Fibre and Cable Co Ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-06-07
Anticipated expiration: 2031-12-16

Abstract

The utility model discloses an automatic circulating detection device for optical cable bending under tension, which comprises a horizontal guide rail, a moving frame and three pulleys, wherein the moving frame is movably arranged on the horizontal guide rail and is provided with the three pulleys; the three pulleys are arranged in an isosceles triangle shape, the central lines of the three pulleys are parallel to each other and are horizontally arranged, and the distance between the central line of the second pulley and the central line of the first pulley is equal to the distance between the central line of the second pulley and the central line of the third pulley. The automatic circulation type detection device for bending under optical cable tension can be used in combination with a horizontal optical cable tensile testing machine used in a laboratory, the test pulley block is driven to move by the movement of the moving frame, the length requirement of a test section of an optical cable is met, a V-shaped bending test under optical cable tension of E18A of the national standard GB/T7424.21 is completed, the cost and the field are saved, and the construction of a bending test platform under optical cable tension is facilitated.

Description

Automatic detection apparatus for crooked under circulating optical cable tension

Technical Field

The utility model belongs to the field of optical cable bending test devices, and particularly relates to an automatic circulation type optical cable bending detection device under tension.

Background

The optical cable construction process is not standard operation or limited by actual arrangement environment, and the optical cable for pipeline or overhead use is not only subjected to horizontal stretching force but also simultaneously acted by tension force and bending force in the process of passing through the pulley in the laying process. In order to verify that the optical characteristics of the optical cable and the integrity of the sheath can still be ensured after the optical cable is subjected to the laying process, a test method of the optical cable is GB/T7424.21 optical cable general specification part 21: basic test method for Optical fiber cable Mechanical property test method and IEC 60794-1-21Optical fiber cables-Part 1-21 general specification-Basic Optical cable process method stipulate the bending test under Optical cable tension to simulate and verify the stress mode. Along with the miniaturized structural design of the optical cable, the test method is more and more emphasized by customers, and the detection of the bending performance of the sound optical cable under tension is also necessary.

The bending test under tension has two test modes in E18A of national standard GB/T7424.21, namely an S-shaped bending test and a V-shaped bending test, and one of the test modes is selected as the bending performance under tension of the optical cable according to the requirements of the scene that the tested optical cable is not used. The stress type of the optical cable in the V-shaped bending test is shown in figure 1, which corresponds to the test mode in E18A of the national standard GB/T7424.21, and the mode is also equal to E18 in IEC 60794-1-21V-bend test method in A. In the figure, A, B is the test end point, R is the roller/pulley radius, and θ is the bend angle of the cable. According to the description of the detection equipment and detection steps used in the test, the construction of the test platform for bending under tension of the optical cable requires the provision of optical cable stretching devices, pulleys and at least 100m²The test site of (1).

The traditional detection platform consists of a device for providing optical cable tension, an optical cable pulley, a device for moving an optical cable to clamp and the like, and can realize a sample stress mode as shown in figure 1. In the product standard of the optical cable, the distance between a stress endpoint A and an endpoint B of the optical cable is generally required to be more than or equal to 10m, the test parameters require that the test platform has enough floor area and high cost, and no optical cable detection laboratory in China has the capability of detecting bending under tension at present. Along with the attention of a customer to a bending test under optical cable tension, the detection requirements of a detection laboratory in an optical cable factory and a third-party optical cable detection laboratory on the project are increasingly strong, a new detection field needs to be built according to a traditional method, three large assemblies (a tension force device, an optical cable pulley and a device for clamping a movable optical cable) are built, and the detection platform is not beneficial to popularization in other optical cable detection laboratories with limited field space.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects or improvement requirements in the prior art, the utility model provides the automatic circulation type detection device for the bending of the optical cable under tension, and the basic detection capability condition of an optical cable manufacturer and an optical cable detection third-party mechanism is combined.

To achieve the above object, according to one aspect of the present invention, there is provided an automatic circulation type optical cable bend-under-tension detecting apparatus, comprising a horizontal guide rail, a moving frame, and three pulleys, which are a first pulley, a second pulley, and a third pulley, wherein:

the moving frame is movably arranged on the horizontal guide rail, and three pulleys are arranged on the moving frame;

it is three the pulley is isosceles triangle and arranges to the optical cable passes through in proper order into experimental required V-arrangement, three behind first pulley, second pulley and the third pulley the central line of pulley is parallel to each other and the level sets up, the central line of second pulley with the distance of the central line of first pulley equals the central line of second pulley with the distance of the central line of third pulley.

Preferably, the moving frame is vertically provided with a strip hole facilitating adjustment of the height of a wheel shaft of the second pulley, an adjusting block is fixedly mounted on the wheel shaft of the second pulley, the moving frame is provided with a plurality of through holes which are vertically arranged at positions corresponding to the adjusting block, and the adjusting block is fixed on the moving frame after the bolt device penetrates through the adjusting block and the through holes.

Preferably, the movable frame is horizontally provided with a strip-shaped hole which is convenient for adjusting the horizontal position of the wheel shaft of the first pulley, a connecting block is fixedly mounted on the wheel shaft of the first pulley, the movable frame is provided with a plurality of connecting holes which are horizontally arranged at positions corresponding to the strip-shaped hole, and the bolt device penetrates through the connecting block and the connecting holes to fix the connecting block on the movable frame.

Preferably, a strip-shaped hole convenient for adjusting the horizontal position of the wheel shaft of the first pulley is horizontally arranged on the moving frame, and the wheel shaft of the first pulley is connected with the hand wheel through a screw rod mechanism.

Preferably, a strip-shaped hole convenient for adjusting the horizontal position of a wheel shaft of the third pulley is horizontally arranged on the moving frame, a connecting block is fixedly mounted on the wheel shaft of the third pulley, a plurality of connecting holes which are horizontally arranged are arranged at the position, corresponding to the strip-shaped hole, of the moving frame, and the connecting block is fixed on the moving frame after the bolt device penetrates through the connecting block and the connecting holes.

Preferably, a strip-shaped hole convenient for adjusting the horizontal position of the wheel shaft of the third pulley is horizontally arranged on the moving frame, and the wheel shaft of the third pulley is connected with the hand wheel through a screw rod mechanism.

Preferably, the second pulley is located below the first pulley and the third pulley, and a highest point of a portion, used for being attached to the optical cable, on the first pulley and a highest point of a portion, used for being attached to the optical cable, on the third pulley are located on the same horizontal plane, so that a section of the optical cable before entering the first pulley and a section of the optical cable after exiting the third pulley are on the same straight line.

Preferably, the second pulley is located above the first pulley and the third pulley, and the lowest point of the part for jointing with the optical cable on the first pulley and the lowest point of the part for jointing with the optical cable on the third pulley are located on the same horizontal plane, so that a section of the optical cable before entering the first pulley and a section of the optical cable after exiting the third pulley are on the same straight line.

Preferably, three of the pulleys are detachably mounted on the moving frame.

Preferably, the moving frame is provided with walking wheels, and the walking wheels on the moving frame are all placed on the horizontal guide rail.

In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:

1) the automatic circulation type detection device for the bending of the optical cable under tension can be used together with a horizontal optical cable tensile testing machine used in a laboratory, the test pulley block is driven to move by the movement of the moving frame, the length requirement of a test section of the optical cable is met, the V-shaped bending test under the optical cable tension in the E18A of the national standard GB/T7424.21 is completed, the cost and the field are saved, and the construction of a bending test platform under the optical cable tension is facilitated.

2) According to the automatic circulation type detection device for bending under optical cable tension, the height of the second pulley can be finely adjusted through the matching of the strip hole, the adjusting block and the through hole, and the adjustment of a V-shaped bending test on the bending angle theta of the optical cable in E18A of the national standard GB/T7424.21 is met.

3) According to the automatic circulation type detection device for bending under optical cable tension, the left and right positions of the first pulley and the third pulley can be finely adjusted through the matching of the strip-shaped holes, the connecting blocks and the through holes, and the adjustment of a V-shaped bending test on the bending angle theta of an optical cable in E18A meeting the national standard GB/T7424.21 is met.

Drawings

FIG. 1 is a schematic diagram of the V-bend test under cable tension of E18A of the national Standard GB/T7424.21;

fig. 2 is a schematic diagram of the present invention.

The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein: 1-horizontal guide rail; 2-a first pulley; 3-a second pulley; 4-a third pulley; 31-elongated holes; 32-a tuning block; 33-a via hole; 21-a first strip aperture; 22-a first connection block; 23-a first connection hole; 41-a second strip-shaped hole; 42-a second connecting block; 43-a second connection hole; 5-running wheels; 6-moving the frame.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 2, an automatic circulation type optical cable bending under tension detection device comprises a horizontal guide rail 1, a moving frame 6 and three pulleys, namely a first pulley 2, a second pulley 3 and a third pulley 4, wherein:

the moving frame 6 is movably arranged on the horizontal guide rail 1, and three pulleys are arranged on the moving frame 6; the movable mounting can be carried out by a sliding block, and the running wheels 5 can also be mounted on the movable frame 6, and the running wheels 5 on the movable frame 6 are all placed on the horizontal guide rail 1.

It is three the pulley is isosceles triangle and arranges to the optical cable passes through in proper order into experimental required V-arrangement, three behind first pulley 2, second pulley 3 and the third pulley 4 the central line of pulley is parallel to each other and the level sets up, the central line of second pulley 3 with the distance of the central line of first pulley 2 equals the central line of second pulley 3 with the distance of the central line of third pulley 4. The central lines of the first pulley 2 and the third pulley 4 are distributed on the same horizontal plane, and the second pulley 3 is positioned above or below the first pulley 2 and the third pulley 4 and at the middle position of the first pulley 2 and the third pulley 4. When the moving frame 6 moves along the horizontal guide rail 1, the second pulley 3 moves along the optical cable, and the test from the stressed end point A to the stressed end point B of the optical cable can be performed as shown in fig. 1. The optical cable of subsides on the pulley is heavier, has exerted the power moreover again, consequently removes frame 6 and pulley need remain stable in the test process, can not rock to cause rocking of optical cable to lead to the test data inaccurate.

Further, the moving frame 6 is vertically provided with a strip hole 31 for conveniently adjusting the height of the axle of the second pulley 3, an adjusting block 32 is fixedly installed on the axle of the second pulley 3, the moving frame 6 is provided with a plurality of through holes 33 which are vertically arranged at positions corresponding to the adjusting block 32, and the adjusting block 32 is fixed on the moving frame 6 after the bolt device passes through the adjusting block 32 and the through holes 33. The height of the second pulley 3 can be finely adjusted through the matching of the long hole 31, the adjusting block 32 and the through hole 33, and the adjustment of the bending angle theta of the V-shaped bending test optical cable in E18A of the national standard GB/T7424.21 is met. When the optical cable is tested, the diameter of the wheel shaft of the second pulley 3 is larger, if the hole group is directly formed in the walking frame to adjust the height of the wheel shaft, the diameter of the formed hole is larger, the center distance between two adjacent holes is larger, and fine adjustment of the second pulley 3 cannot be achieved. The long holes 31 are matched with the wheel shaft, and through holes 33 with smaller intervals are arranged on the walking frame, so that the height of the second pulley 3 can be more finely adjusted.

As a preferable scheme, a first strip-shaped hole 21 for facilitating adjustment of a horizontal position of an axle of the first pulley 2 is horizontally arranged on the moving frame 6, a first connecting block 22 is fixedly mounted on the axle of the first pulley 2, a plurality of horizontally arranged first connecting holes 23 are arranged at positions corresponding to the first strip-shaped hole 21 on the moving frame 6, and a bolt device passes through the first connecting block 22 and the first connecting holes 23 to fix the connecting blocks on the moving frame 6. The installation position of the first pulley 2 can be adjusted by moving along the first bar-shaped hole 21, and after the installation position is adjusted in place, the first connection block 22 can be fixed on the movable frame 6 by using a bolt device. As another preferable scheme, a first strip-shaped hole 21 for conveniently adjusting the horizontal position of the axle of the first pulley 2 is horizontally arranged on the moving frame 6, and the axle of the first pulley 2 can be connected with a hand wheel through a screw mechanism, so that the axle of the first pulley 2 can be moved to adjust the position of the first pulley 2 by directly rotating the hand wheel without arranging the first connecting hole 23.

As a preferable scheme, a second bar-shaped hole 41 for conveniently adjusting the horizontal position of the axle of the third pulley 4 is horizontally arranged on the moving frame 6, a connecting block is fixedly installed on the axle of the third pulley 4, a plurality of second connecting holes 43 horizontally arranged are arranged at the position corresponding to the second bar-shaped hole 41 on the moving frame 6, a bolt device passes through the second connecting block 42 and the second connecting holes 43 to fix the second connecting block 42 on the moving frame 6, and the installation position of the third pulley 4 can be adjusted by moving along the bar-shaped hole. As another preferable scheme, a strip-shaped hole convenient for adjusting the horizontal position of the wheel shaft of the third pulley 4 is horizontally arranged on the moving frame 6, and the wheel shaft of the third pulley 4 is connected with a hand wheel through a screw mechanism.

The positions of the first pulley 2 and the third pulley 4 can be synchronously adjusted to realize the adjustment of the bending angle theta of the optical cable in the V-shaped bending test.

Preferably, the second pulley 3 is located below the first pulley 2 and the third pulley 4, and a highest point of a portion for jointing with the optical cable on the first pulley 2 and a highest point of a portion for jointing with the optical cable on the third pulley 4 are located on the same horizontal plane, so that a section of the optical cable before entering the first pulley 2 and a section of the optical cable after exiting the third pulley 4 are on the same straight line. As another preferable mode, the second pulley 3 is located above the first pulley 2 and the third pulley 4, and a lowest point of the portion for attaching to the optical cable on the first pulley 2 and a lowest point of the portion for attaching to the optical cable on the third pulley 4 are located on the same horizontal plane, so that a section of the optical cable before entering the first pulley 2 and a section of the optical cable after exiting the third pulley 4 are on the same straight line. The two schemes can be reasonably arranged according to the height of the optical cable on the test field, and the like, so that the optical cable tensile testing machine is suitable for the height of the tested optical cable stretched by the optical cable tensile testing machine.

Further, the three pulleys can be detachably mounted on the moving frame 6, so that the adjustment of the radius R of the roller/pulley in the V-shaped bending test in E18A meeting the national standard GB/T7424.21 can be realized by replacing the pulleys.

When the utility model is matched with a horizontal optical cable tensile test machine, the following parameters need to be adjusted by attention:

(1) the central axial extension lines of the two horizontal guide rails 1 and the optical cable to be bent which is arranged on the optical cable tensile testing machine are on the same plane which is vertical to the ground.

(2) The first pulley 2 to the third pulley 4 need to be on the same plane vertical to the ground.

(3) The diameter of the second pulley 3 should satisfy the test parameter R in E18A of the national standard GB/T7424.21 or not.

(4) The mounting positions of the three pulleys are ensured: (4.1) the heights of the A end of the bent optical cable and the stretched optical cable; (4.2) the arrangement of the pulleys satisfies the test angle θ.

(5) The positions of the first pulley 2 and the third pulley 4 are adjusted according to the tested positions, so that the two lengths of the optical cables entering the first pulley 2 and exiting the third pulley 4 are kept horizontal and in the same line.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the utility model, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a detection apparatus that automatic circulating optical cable tension is crooked down, its characterized in that includes horizontal guide rail, removal frame and three pulley, and these three pulleys are first pulley, second pulley and third pulley respectively, wherein:

2. The automatic circulation type optical cable tension bending detection device as claimed in claim 1, wherein the moving frame is vertically provided with a long hole for conveniently adjusting the height of the axle of the second pulley, the axle of the second pulley is fixedly provided with an adjusting block, the moving frame is provided with a plurality of through holes vertically arranged at positions corresponding to the adjusting block, and the adjusting block is fixed on the moving frame after the bolt device passes through the adjusting block and the through holes.

3. The apparatus of claim 1, wherein the movable frame is horizontally provided with a bar-shaped hole for adjusting a horizontal position of a wheel shaft of the first pulley, the wheel shaft of the first pulley is fixedly provided with a connecting block, the movable frame is provided with a plurality of connecting holes horizontally arranged at positions corresponding to the bar-shaped hole, and a bolt device passes through the connecting block and the connecting holes to fix the connecting block on the movable frame.

4. The automatic circulation type optical cable tension downward bending detection device as claimed in claim 1, wherein the moving frame is horizontally provided with a strip-shaped hole for conveniently adjusting the horizontal position of the wheel shaft of the first pulley, and the wheel shaft of the first pulley is connected with the hand wheel through a screw mechanism.

5. The automatic circulation type optical cable tension sag bending detection device as claimed in claim 1, wherein the moving frame is horizontally provided with a bar-shaped hole for facilitating adjustment of a horizontal position of a wheel shaft of the third pulley, a connection block is fixedly mounted on the wheel shaft of the third pulley, the moving frame is provided with a plurality of connection holes horizontally arranged at positions corresponding to the bar-shaped hole, and a bolt device passes through the connection block and the connection holes to fix the connection block on the moving frame.

6. The automatic circulation type optical cable tension downward bending detection device as claimed in claim 1, wherein a strip-shaped hole for facilitating adjustment of a horizontal position of a wheel shaft of a third pulley is horizontally arranged on the moving frame, and the wheel shaft of the third pulley is connected with a hand wheel through a lead screw mechanism.

7. The apparatus of claim 1, wherein the second pulley is located below the first pulley and the third pulley, and a highest point of a portion of the first pulley for engaging with the optical cable and a highest point of a portion of the third pulley for engaging with the optical cable are located on a same horizontal plane, so that a section of the optical cable before entering the first pulley and a section of the optical cable after exiting the third pulley are on a same straight line.

8. An automatic loop type optical cable tension sag bending detection device according to claim 1, wherein the second pulley is located above the first pulley and the third pulley, and a lowest point of a portion of the first pulley for attaching to the optical cable and a lowest point of a portion of the third pulley for attaching to the optical cable are located on the same horizontal plane, so that a section of the optical cable before entering the first pulley and a section of the optical cable after exiting the third pulley are on the same straight line.

9. An automatic circulation optical cable tension bow detection device as claimed in claim 1, wherein three of said pulleys are removably mounted to said carriage.

10. The apparatus of claim 1, wherein the moving frame has wheels mounted thereon and the wheels of the moving frame are disposed on the horizontal rail.