Background technology
Tensile test is done to electric wire and (also claims tension test, as follows) be electric wire product supervisory detection mechanism especially electric wire production firm hold the indispensable link of electric wire product quality, the insulation course (also claiming conductor outer quilt) of electric wire and/or the physical property of oversheath can be predicted by this, and judge whether electric wire product meets relevant criterion (comprising international standard, national standard, industry standard and inner controlling standard of enterprise) accordingly.Take on and electric wire tension tester or electric wire puller system are called to the equipment custom of electric wire tensile test.
The technical information about electric wire tension tester is no lack of in disclosed Chinese patent literature, slightly exemplify as CN201497671U(tension tester), CN202494598U(mono-kind detects the tension tester of electric wire insulation layer tensile strength), CN202974763U(tension tester) and CN203479629U(steel strand tensile test machine), etc.Wherein: in CN202974763U, also show the chuck (patent claims the first chuck and the second chuck) for clamping tested cable two ends; Fixing card (patent deserves to be called fixing card and lower fixing card) for fixed cable two ends has been shown in CN203479629U.But, in Chinese patent literature disclosed in up to now, technical information about the fixture of electric wire tension tester is rare, through retrieving and having searched with Publication about Document, Authorization Notice No. CN202582995U recommends to be had " a kind of tension tester Wedge gripping ", adopts the wedge shape fixture block driven by hydraulic jack to be clamped by the wire rod of tested such as electric wire and so on; Authorization Notice No. CN201740698U provides " clamp of tensile machine ", it is on fixed head, establish the reeded wrapping wire plate of a band, wrapping wire plate is fixed a hold-down nut, hold-down nut arranges bolt, handle is arranged in one end of bolt, and nipper is set at the other end of bolt, and make nipper corresponding with the reeded wrapping wire plate of band.During test, namely when clamping electric wire, make nipper displacement by the expulsive force of bolt and by the clamping of tested cable (what this patent exemplified is steel wire, specifically can see the 0009 to 0010 section, the instructions of this patent).
The fixed form at the above-mentioned two ends to tested cable related to by CN202974763U, CN203479629U, CN202582995U and CN201740698U is all clamp with fashion of extrusion with the two ends of traditional mode of thinking by cable.This mode that clamps certainly can be proved effective corresponding to the clamping of cable that external diameter is relatively large, but often expose following logical fraud when the cable sample that wire diameter is less is clamped: when very easily undermining tested cable sample due to the cause of extruding force and cause stretching when electric wire tension tester enters test mode, there is fracture situation in clamping place in tested cable, thus causes test crash; If in order to avoid undermining tested cable sample when clamping, namely in order to avoid excessive clamping, so in test process, tested cable is easily shaken off from clamping, causes test crash equally.
For above-mentioned prior art, the applicant has done lasting and useful exploration and design repeatedly, finally define technical scheme described below, and carried out simulation test in the test center of the applicant taking under secrecy provision, result proves practicable.
Summary of the invention
Task of the present utility model is to provide a kind of and contributes to embodying to the harmless location of tested cable and location is reliable and use the clamp structure avoiding occurring the electric wire tension tester shaken off from location or rupture in tensile test process.
Task of the present utility model has been come like this, a kind of clamp structure of electric wire tension tester, comprises winding roller roll stand on; Winding roller roll stand once, this lower winding roller roll stand corresponds to the below of described upper winding roller roll stand; Winding roller on one, on this, winding roller is arranged in described upper winding roller roll stand with horizontality; Winding roller once, this lower winding roller is arranged in described lower winding roller roll stand with horizontality, and corresponds to the below of described upper winding roller.
In a specific embodiment of the present utility model, described upper winding roller roll stand comprises torque arm holder on, torque arm in one puller system upper binding head and a pair, upper torque arm holder corresponds to the top of described upper winding roller with horizontality, puller system upper binding head is fixed on torque arm holder towards upper side and is positioned at the middle position of the length direction of upper torque arm holder, on a pair, torque arm longitudinally walks abreast each other, and this is connected the left end of the upper end of torque arm in one of them in upper torque arm with upper torque arm holder, and lower end is configured to cantilever end, and upper end of torque arm is connected with the right-hand member of upper torque arm holder on another on a pair in torque arm, and lower end is configured to cantilever end equally, described upper winding roller correspond to the position on a pair between torque arm with a pair on the lower end of torque arm be connected, described lower winding roller roll stand comprises a lower arm holder, one puller system lower union joint and a pair lower arm, lower arm holder corresponds to the below of described lower winding roller with horizontality, puller system lower union joint be fixed on lower arm holder towards under side and be positioned at the middle position of the length direction of lower arm holder, a pair lower arm longitudinally walks abreast each other, and this is connected the left end of the lower end of one of them lower arm in lower arm with lower arm holder, and upper end is stretched towards the direction of lower winding roller, the lower end of another lower arm in a pair lower arm is connected with the right-hand member of lower arm holder, and upper end is stretched towards the direction of lower winding roller equally, lower winding roller is being connected with the upper end of a pair lower arm corresponding to the position between a pair lower arm.
In another specific embodiment of the present utility model, described puller system upper binding head and puller system lower union joint are self correspondences, puller system upper binding head offers a upper binding head pin shaft hole, and on puller system lower union joint, offers a lower union joint pin shaft hole.
In another specific embodiment of the present utility model, the left end end face of torque arm holder and right-hand member end face respectively offer torque arm connecting screw hole on described, the upper end of torque arm in described a pair and on corresponding to the position of torque arm connecting screw hole respectively offer torque arm attachment screw hole on, torque arm attachment screw hole is equipped with torque arm attachment screw on for this, on this, torque arm attachment screw is connected with upper torque arm connecting screw hole, on a pair, the lower end of torque arm respectively offers a upper winding roller roll shaft support slot communicated with the external world, on described the two ends of winding roller end face on and the center being positioned at end face is respectively configured with winding roller roll shaft on, on this, winding roller roll shaft is supported in described upper winding roller roll shaft support slot, and limit nut by the upper winding roller roll shaft threadingly screwed on upper winding roller roll shaft to limit, the left end end face and right-hand member end face of described lower arm holder respectively offer a lower arm connecting screw hole, a lower arm attachment screw hole is respectively offered in the lower end of a pair described lower arm and corresponding to the position of lower arm connecting screw hole, this lower arm attachment screw hole is equipped with a lower arm attachment screw, this lower arm attachment screw is connected with lower arm attachment screw hole, a lower winding roller roll shaft support slot communicated with the external world is respectively offered in the upper end of a pair lower arm, on the end face at the two ends of described lower winding roller and the middle position being positioned at end face is respectively configured with winding roller roll shaft, this lower winding roller roll shaft is supported in described lower winding roller roll shaft support slot, and limit nut by the lower winding roller roll shaft screwed threadably on lower winding roller roll shaft to limit.
In another specific embodiment of the present utility model, described upper winding roller roll shaft limits nut a pair, and corresponds respectively to the both sides of described upper winding roller roll shaft support slot; Described lower winding roller roll shaft limits nut a pair, and corresponds respectively to the both sides of described lower winding roller roll shaft support slot.
Also have in a specific embodiment of the present utility model, a upper winding roller lock hole for stoping winding roller to rotate is offered on the left end end face of described upper winding roller or on right-hand member end face, on of left side in described a pair in torque arm, the position of winding roller lock hole is equipped with winding roller lock screw in torque arm and on corresponding in torque arm or on one of right side, and on this, winding roller lock screw matches with upper winding roller lock hole; A lower winding roller lock hole rotated for winding roller under stoping is offered on the left end end face of described lower winding roller or on right-hand member end face, be equipped with winding roller lock screw in the position corresponding to lower winding roller lock hole on a lower arm in the left side in a pair described lower arm or on a lower arm on right side, this lower winding roller lock screw matches with lower winding roller lock hole.
More of the present utility model and in a specific embodiment, described upper torque arm holder and the shape of cross section of lower arm holder rectangular or square.
The technical scheme that the utility model provides is owing to have employed upper and lower winding roller, thus can the two ends of tested cable be reliably positioned between upper and lower winding roller with the coil that canoe is formed, tested cable can not be undermined, and the end that puller system carries out tested cable in the process of tensile test can not be shaken off from upper and lower winding roller, and the phenomenon that there will not be position, end to rupture.
Embodiment
Embodiment:
Refer to Fig. 1, figure 1 illustrates winding roller roll stand 1 on; Winding roller roll stand 2 once, this lower winding roller roll stand 2 corresponds to the below of described upper winding roller roll stand 1; Winding roller 3 on one, on this, winding roller 3 is arranged in upper winding roller roll stand 1 with horizontality; Winding roller 4 once, this lower winding roller 4 is arranged in lower winding roller roll stand 2 with horizontality, and corresponds to the below of upper winding roller 3.The structure of upper and lower winding roller roll stand 1,2 is in fact position relationship that is identical and that formed each other in opposite directions.Equally, the shape of upper and lower winding roller 3,4 and size are also identical.
Aforesaid upper winding roller roll stand 1 comprises torque arm holder 11 on, torque arm 13 in one puller system upper binding head 12 and a pair, upper torque arm holder 11 corresponds to the top of upper winding roller 3 with horizontality, puller system upper binding head 12 is fixed on torque arm holder 11 towards upper side and is positioned at the middle position of the length direction of upper torque arm holder 11, on a pair, torque arm 13 is longitudinally parallel each other, and this is connected with the left end of upper torque arm holder 11 upper end of the upper torque arm of on the left of torque arm in one of them in upper torque arm 13 and shown position, and lower end is configured to cantilever end, and the upper end of a upper torque arm on another on a pair in torque arm 13 on the right side of torque arm and shown position is connected with the right-hand member of upper torque arm holder 11, and lower end is configured to cantilever end equally, aforesaid upper winding roller 3 correspond to the position on a pair between torque arm 13 with a pair on the lower end of torque arm 13 be connected, namely the lower end of torque arm 13 on a pair is bearing in.
Aforesaid lower winding roller roll stand 2 comprises a lower arm holder 21, one puller system lower union joint 22 and a pair lower arm 23, lower arm holder 21 corresponds to the below of aforementioned lower winding roller 4 with horizontality, puller system lower union joint 22 be fixed on lower arm holder 21 towards under side and be positioned at the middle position of the length direction of lower arm holder 21, a pair lower arm 23 is longitudinally parallel each other, and this is connected with the left end of lower arm holder 21 lower end of one of them lower arm in lower arm 23 and a lower arm on the left of shown position, and upper end is stretched towards the direction of lower winding roller 4, the lower end of another lower arm in a pair lower arm 23 and a lower arm on the right side of shown position is connected with the right-hand member of lower arm holder 21, and upper end is stretched towards the direction of lower winding roller 4 equally, the position corresponded between a pair lower arm 23 of lower winding roller 4 is connected with the upper end of a pair lower arm 23, namely the upper end of a pair lower arm 23 is bearing in.
Aforesaid puller system upper binding head 12 and puller system lower union joint 22 are self correspondences, and more particularly, the upper and lower connector of puller system 12,22 is on same longitudinal centre line each other.Puller system upper binding head 12 offers a upper binding head pin shaft hole 121, and on puller system lower union joint 22, offers a lower union joint pin shaft hole 221.
Still see Fig. 1, the left end end face of torque arm holder 11 and right-hand member end face respectively offer torque arm connecting screw hole 111 on aforementioned, the upper end of torque arm 13 on aforesaid a pair and on corresponding to the position of torque arm connecting screw hole 111 respectively offer torque arm attachment screw hole 131 on, torque arm attachment screw hole 131 is equipped with torque arm attachment screw 1311 on for this, on this, torque arm attachment screw 1311 is connected (being threaded) with upper torque arm connecting screw hole 111, on a pair, the lower end of torque arm 13 respectively offers a upper winding roller roll shaft support slot 132 communicated with the external world, on aforementioned the two ends of winding roller 3 end face on and the center being positioned at end face is respectively configured with winding roller roll shaft 31 on, on this, winding roller roll shaft 31 is supported on that all that has been achieved is spoiled states in winding roller roll shaft support slot 132, and limit nut 311 by the upper winding roller roll shaft threadingly screwed on upper winding roller roll shaft 31 to limit.
The left end end face and right-hand member end face of aforementioned lower arm holder 21 respectively offer a lower arm connecting screw hole 211, a lower arm attachment screw hole 231 is respectively offered in the lower end of aforesaid a pair lower arm 23 and corresponding to the position of lower arm connecting screw hole 211, this lower arm attachment screw hole 231 is equipped with a lower arm attachment screw 2311, this lower arm attachment screw 2311 is connected (being threaded) with lower arm attachment screw hole 211, a lower winding roller roll shaft support slot 232 communicated with the external world is respectively offered in the upper end of a pair lower arm 23, on the end face at the two ends of aforementioned lower winding roller 4 and the middle position being positioned at end face is respectively configured with winding roller roll shaft 41, this lower winding roller roll shaft 41 is supported in aforementioned lower winding roller roll shaft support slot 232, and limit nut 411 by the lower winding roller roll shaft screwed threadably on lower winding roller roll shaft 41 to limit.
From the signal of Fig. 1, aforesaid upper winding roller roll shaft limits nut 311 a pair, and corresponds respectively to the both sides of described upper winding roller roll shaft support slot 132; When upper winding roller roll shaft 31 enters after in upper winding roller roll shaft support slot 132, nut 311 is limited to upper winding roller roll shaft jointly upper winding roller roll shaft 31 is seized on both sides by the arms by this.Aforesaid lower winding roller roll shaft limits nut 411 a pair, and correspond respectively to the both sides of lower winding roller roll shaft support slot 232, instantly winding roller roll shaft 41 enters after in lower winding roller roll shaft support slot 232, is limited nut 411 jointly seized on both sides by the arms lower winding roller roll shaft 41 by this lower winding roller roll shaft.
Still see Fig. 1, on aforesaid winding roller 3 left end end face on offer a upper winding roller lock hole 32 for stoping winding roller 3 to rotate, on of left side on aforesaid a pair in torque arm 13, the position of winding roller lock hole 32 is equipped with winding roller lock screw 133 in torque arm and on corresponding to, and on this, winding roller lock screw 133 matches with upper winding roller lock hole 32; The left end end face of aforesaid lower winding roller 4 offers a lower winding roller lock hole 42 rotated for winding roller 4 under stoping, be equipped with winding roller lock screw 233 on a lower arm in the left side in aforesaid a pair lower arm 23 and corresponding to the position of lower winding roller lock hole 42, this lower winding roller lock screw 233 matches with lower winding roller lock hole 42.
Applicant it should be noted that: if be transferred on the right-hand member end face of upper winding roller 3 by aforesaid upper winding roller lock hole 32, and one of the right side on a pair in torque arm 13 torque arm arranges winding roller lock screw 133, so should be considered as equivalence substitute and still belong to technology contents category disclosed in the utility model, above mentioned lower winding roller lock hole 42 and lower winding roller lock screw 233 are with example.In addition, if all arrange on the left end end face and right-hand member end face of upper winding roller 3 in winding roller lock hole 32 and a pair and torque arm 13 all arrange winding roller lock screw 133, so also should be considered as equivalence to substitute, above mentioned lower winding roller 4 and a pair lower arm 23, with example, repeat no more.
In the present embodiment, the shape of cross section of above mentioned upper and lower torque arm holder 11 is all rectangular, but does not repel square.In addition, due under above mentioned, lower winding roller roll shaft support slot 132,232 is all tilt, therefore the lower end of torque arm on a pair 13 can be called hook end, the upper end of a pair lower arm 23 is called hook end equally.
Application examples:
Refer to Fig. 2 and composition graphs 1, figure 2 illustrates known namely by the electric wire tension tester 5 of commercially available channel acquisition, the knot principle of this electric wire tension tester 5 and the structure of aforementioned CN202974763U and CN201497671U have similarity.Should in use-case, electric wire tension tester 5 select with produced by Jiangsu Province, China Yangzhou three elder brother test apparatus equipment company limited and be SK-Y molded line cable tension tester in the model of market public offering before the application proposes.But also can select produced by Xinda, Shanghai City, China Instrument Ltd. and be equally XD-121B tension tester in the model of market sale before the application proposes.
To when carrying out tensile test by illustrated electric wire 6 on the electric wire tension tester 5 being matched in as shown in Figure 2 when clamp structure of the present utility model as shown in Figure 1 will be adopted, upper binding head bearing pin 122 is adopted by the puller system upper binding head 12 of upper winding roller support 1 to be connected with the upper joint sleeve 51 of electric wire tension tester 5 corresponding to the position of upper binding head pin shaft hole 121, specifically, first puller system upper binding head 12 is inserted in upper joint sleeve 51, then implement to connect with upper binding head bearing pin 122; Lower union joint bearing pin 222 is adopted by the puller system lower union joint 22 of lower winding roller support 2 to be connected with the lower joint sleeve 52 of electric wire tension tester 5 corresponding to the position of lower union joint pin shaft hole 221, specifically, first puller system lower union joint 22 is inserted lower joint sleeve 52, then implement to connect with lower union joint bearing pin 222.As shown in Figure 2, upper joint sleeve 51 is connected with pulling force sensor 511, lower joint sleeve 52 is fixed with lower joint sleeve holder 521, and lower joint sleeve holder 521 is fixed on the base 531 of the frame 53 of electric wire testing machine 5.
By the mode of Fig. 1 and Fig. 2 signal, the first end 61 of the electric wire 6 for tensile test is posted by upper winding roller 3, and makes electric wire 6 on upper winding roller 3, form multiple first coil 62, by the plurality of first coil 62, first end 61 is reliably pushed down; The second end 63 of electric wire 6 is posted by lower winding roller 4, and makes electric wire 6 on lower winding roller 4, form multiple second coil 64, by the plurality of second coil 64, the second end 63 is reliably pushed down.Locator meams to tested electric wire 6 like this is owing to having abandoned in prior art by the mode that fixture (chuck of such as CN202974763U instruction and the fixing card of CN203479629U instruction) direct mounting board is located, thus both can not undermine electric wire 6, also there will not be first, second end 61,63 in test process from the phenomenon that upper and lower winding roller 3,4 is shaken off.
By tester by the operation to the electric control box 532 be arranged in frame 53, a pair screw rod 54 is made to move (rotation) by actuating unit (not shown), drive the crossbeam 55 matched with a pair screw rod 54 by crossbeam nut 551 up, crossbeam 55 under the guiding of guide rod 56 to while top offset, because aforesaid pulling force sensor 511 is connected with crossbeam 55, again because whole upper winding roller roll stand 1 is connected with pulling force sensor 511 together with upper winding roller 3, therefore when crossbeam 55 is to top offset, upper winding roller 3 is towards the direction displacement deviating from lower winding roller 4, namely to top offset, realize being positioned at, lower winding roller 3, the tensile test of the electric wire 6 between 4.
In sum, the technical scheme that the utility model provides overcomes the deficiency in prior art, successfully completes invention task, embodies the technique effect referred in the superincumbent technique effect hurdle of applicant objectively.