CN201408151Y

CN201408151Y - Torsion test equipment of indoor optical cable

Info

Publication number: CN201408151Y
Application number: CN2009203117473U
Authority: CN
Inventors: 李然山; 何伟
Original assignee: ZHENGZHOU SHIJIA COMMUNICATION TECHNOLOGY Co Ltd
Current assignee: ZHENGZHOU SHIJIA COMMUNICATION TECHNOLOGY Co Ltd
Priority date: 2009-09-28
Filing date: 2009-09-28
Publication date: 2010-02-17
Anticipated expiration: 2019-09-28

Abstract

The utility model relates to the torsion test equipment of an indoor optical cable, which comprises a stand and a torsion arm, wherein the torsion arm is provided with a first clamping device, a sliding track device is arranged on the stand, a second clamping device is arranged on a sliding block of the sliding track device, both the first clamping device and the second clamping device comprise base bodies in a symmetric shape, a winding wheel is fixedly arranged on the symmetric line of the base bodies, a winding slot is formed on the circumference of the winding wheel, a presser and a guidance device on the base bodies are arranged on the radial external side of the winding wheel, an arc-shaped wiring trough is formed on the guidance device, the symmetric line of the base bodies and theaxis of the winding wheel are vertically crossed, the bottom surface of the arc-shaped slot of the guidance device is in tangency with the plane formed by the symmetric line of the base plates and theaxis of the winding wheel, and the common tangential line of the bottom surfaces of the guidance slots of the two guidance devices is horizontal and is superposed on the rotating central line of thetorsion arm, which ensures the clamping effect on the indoor optical cable in a test, prevents the optical cable of the clamped part from being damaged and enables the test data to be accurate and effective.

Description

A kind of inside cable twisting test equipment

Technical field

The utility model relates to optical cable torsion test equipment, is specifically related to a kind of inside cable torsion test equipment.

Background technology

Present fiber optic cable twist test equipment, be at the design of the characteristics of outdoor optical cable, comprise frame, drive unit, reverse arm, drive unit is arranged on the frame, drive unit comprises drive motor, drive motor back and forth reverses by the reverse arm that gearing drives frame one end, reverse arm is provided with first clamping device, the frame other end is provided with railroad, the slide block of railroad is provided with second clamping device, and first clamping device and second clamping device are the clamping plate type structure, are connected with the balancing weight draught line on the slide block, be connected on the unsettled balancing weight by fixed pulley, for the optical cable between two clamping devices provides suitable tension force.When testing, the two ends of optical cable sample are clamped to respectively on first, second clamping device, thereby back and forth reverse by reverse arm tested optical cable is back and forth reversed synchronously, performance to tested optical cable after the set point number test is detected, and then analyzes the corresponding mechanical property of this tested optical cable.

Desirable test mode is, the structural behaviour of only tested part optical cable is sent out into variation in process of the test, and the clamping part of test optical cable should keep structural behaviour intact, but the clamping device in the optical cable testing equipment all is applicable to the clamping outdoor optical cable at present, because the restrictive coating of outdoor optical cable all has layer of metal to support, the clamping optical cable more relatively easily, as long as compress, and be not easy to damage inner optical fiber, so no matter be in construction, still in experimental test, optical cable all is to fix in the mode that briquetting compresses or clamping plate clamp usually.The existing clamping device of outdoor optical cable in mechanical test is made up of two clamping plates, and two clamping plates one end links together, and can rotate around fixed rotating shaft, and respectively there is an arc groove at the position of two clamping plates center line, and two arc groove positions are corresponding mutually.During test one end of optical cable style is positioned between two grooves, the especially little cable in non-circular cable or line footpath is placed after then needing to tighten with bag again, closes and closes two clamping plate, with set bolt two clamping plate is fixed to clamp at last, by the clamping of clamping plate realization optical cable; The other end of optical cable grips with identical device, and adds that certain counterweight is with tensioning optical fiber below device.

And inside cable for considerations such as environmental protection and lightning protection, is not put metalwork for satisfying the requirement of laying and using usually in the optical cable, so inside cable is very soft, external diameter is very thin, and oversheath is also soft, wall thickness is thinner, in order to guarantee the quality of production, also needs to check its mechanical property.If the mode that directly compresses that adopts present outdoor optical cable will cause the optical cable flattening deformation to the inside cable clamping, even fibercuts; And the oversheath of inside cable is to be made by soft material mostly, adopt clamping device in the past to test, then cable outer sheath has certain elongation, that part of oversheath after the clamping can be wavy bending, inner fibre core also can be crooked thereupon, so that the decay of whole piece optical cable is just very big before test, causes the final test figure of measuring inaccurate.Even more serious is the present difficult elasticity of holding clamping of clamping mode, and operating difficulties and holding force are wayward, if holding force is not enough, then optical cable can skid, can't clip, if clamping is excessive, optical cable is flat by folder easily, causes decay to increase.

The utility model content

The purpose of this utility model provides a kind of inside cable twisting test equipment, to guarantee that in test the clamping effect of inside cable is avoided causing the damage of retaining part optical cable, makes the experimental data accurate and effective.

For achieving the above object, the technical solution of the utility model is: a kind of inside cable twisting test equipment, comprise frame and reverse arm, reverse arm is provided with first clamping device, frame is provided with railroad, the slide block of railroad is provided with second clamping device, first clamping device and second clamping device include the matrix of shape symmetry, be installed with reel on the line of symmetry of matrix, the circumference of reel is provided with winding slot, radial outside at reel on the matrix is provided with hold down gag and guide piece, guide piece is provided with the metallic channel of arc, the line of symmetry of matrix and the intersect vertical axis of reel, the plane that axis constituted of the line of symmetry of the bottom surface of deep-slotted chip breaker and substrate and reel is tangent on the guide piece; The common tangent line level of the bottom surface of two guide piece gathering sills and overlap with the rotary centerline of reverse arm.

Hold down gag comprises that one has the pedestal of U type hatch frame, and a side of this pedestal U type opening is connected with substrate, and opposite side offers tapped through hole, is installed with housing screw in the tapped through hole.

As further optimization, the termination of housing screw over against the sidewall of U type structure be provided with rubber sheet gasket; Substrate be shaped as rectangle.

Inside cable is after hold down gag is fixed in the utility model, on reel, twine a few, limit the outlet direction of inside cable again via guide piece, in the clamping device fixedly required the advocating of inside cable to provide by reel and the friction force of twining between the inside cable, hold down gag only need be pushed down inside cable with less snap-in force and get final product, so can not cause damage to inside cable; The common tangent line level of the bottom surface of two guide piece gathering sills and overlap with the rotary centerline of reverse arm has guaranteed that the optical cable style only does twisting motion around the optical cable axle center, has guaranteed the unicity of test.In addition, the mode that hold down gag adopts tapped through hole to match with housing screw in use can be carried out the adjusting of fixation pressure according to the difference of inside cable, and is flexible and convenient to use; Pad is set in hold down gag, is used with hold-down bolt, increased the fixedly friction force of optical cable of hold down gag, the while has been played protective effect to the glass core of the part inside cable that is fixed again.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the structural representation of first clamping device;

Fig. 4 is the left view of Fig. 3.

Embodiment

As shown in Figures 1 to 4, the inside cable twisting test equipment of present embodiment comprises frame 1, rotary electric machine 2, gearing 3, reverse arm 9, railroad 6, first clamping device 5, second clamping device 4, fixed pulley 7, balancing weight 8, frame 1 is provided with rotary electric machine 2, railroad 6 and fixed pulley 7, rotary electric machine 2 is done back and forth by gearing 3 drive twisted wall 9 and is reversed, reverse arm 9 is provided with first clamping device 5, the slide block of railroad 6 is provided with second clamping device 4, optical cable style 10 two ends are clamped in respectively on first clamping device 5 and second clamping device 4, the slide block of railroad 6 is connected in balancing weight 8 by fixed pulley 7, for optical cable style 10 provides tension force.

First clamping device 5 comprises the substrate 51 that is shaped as rectangle, longitudinally be fixed with hold down gag 54, reel 52 and guide piece 53 on the substrate 51 successively, the circumference of reel 52 is provided with winding slot, guide piece 53 is provided with the circular arc metallic channel, radial outside at reel 52 on the substrate 51 is provided with hold down gag 54 and guide piece 53, the intersect vertical axis of the line of symmetry of substrate 51 and reel 52; The plane that axis constituted of the line of symmetry of the bottom surface of deep-slotted chip breaker and substrate 51 and reel 52 is tangent on the guide piece 53.

Hold down gag 54 comprises that one has the pedestal 542 of U type hatch frame, one side of this pedestal U type opening is connected with substrate 51, opposite side offers tapped through hole, is installed with housing screw 541 in the tapped through hole, the termination of housing screw 541 over against the sidewall of U type structure be provided with rubber sheet gasket 543.

Optical cable style 10 through hold down gag 54 carry out little power fixing after, parallel five circles that twine on reel 52 utilize and twine the friction force hold down gag 54 that produces and cooperate, and realize optical cable style 10 is gripped.

Second clamping device 4 is identical with first clamping device, 5 structures, and in actual applications, because hold down gag 54 quality own are less, its position is little to the performance impact of clamping device in system, so can adjust the position of hold down gag 54.

Hold down gag 54 adopts pressed seat 542 to fix with the mode that housing screw 541 cooperates in the present embodiment, can certainly adopt other compressing method, and cramp joint is fixed as elasticity.

The side of guide piece 53 is an arc-shaped surface in the present embodiment, can certainly be other arcwall face, as the ellipse arc face.

The number of turns that inside cable twines on reel 52 in the present embodiment is five circles, can certainly adjust arbitrarily according to needs, and for example for further reducing the suffered pulling force of optical cable in hold down gag 54 sections, the number of turns of winding can be ten circles.

Claims

1. inside cable twisting test equipment, comprise frame and reverse arm, reverse arm is provided with first clamping device, frame is provided with railroad, the slide block of railroad is provided with second clamping device, it is characterized in that: first clamping device and second clamping device include the matrix of shape symmetry, be installed with reel on the line of symmetry of matrix, the circumference of reel is provided with winding slot, radial outside at reel on the matrix is provided with hold down gag and guide piece, guide piece is provided with the metallic channel of arc, the line of symmetry of matrix and the intersect vertical axis of reel, the plane that axis constituted of the line of symmetry of the bottom surface of deep-slotted chip breaker and substrate and reel is tangent on the guide piece; The common tangent line level of the bottom surface of two guide piece gathering sills and overlap with the rotary centerline of reverse arm.

2. inside cable twisting test equipment as claimed in claim 1, it is characterized in that: described hold down gag comprises that one has the pedestal of U type hatch frame, one side of this pedestal U type opening is connected with substrate, and opposite side offers tapped through hole, is installed with housing screw in the tapped through hole.

3. inside cable twisting test equipment as claimed in claim 2 is characterized in that: the termination of described housing screw over against the sidewall of U type structure be provided with rubber sheet gasket.

4. as claim 1 or 2 or 3 described inside cable twisting test equipment, it is characterized in that: described substrate be shaped as rectangle.