CN204214670U - Cable insulation sample cutter sweep - Google Patents
Cable insulation sample cutter sweep Download PDFInfo
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- CN204214670U CN204214670U CN201420735727.XU CN201420735727U CN204214670U CN 204214670 U CN204214670 U CN 204214670U CN 201420735727 U CN201420735727 U CN 201420735727U CN 204214670 U CN204214670 U CN 204214670U
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Abstract
The utility model discloses a kind of cable insulation sample cutter sweep, comprise blade, stationary shaft, firm banking, described stationary shaft comprises interconnective first construction section, the second construction section, described first construction section is connected with the rotating shaft of lathe, cable insulation sample is enclosed within the second construction section, described firm banking is arranged on lathe, firm banking is provided with the cutter groove mated with described blade, described blade is fixedly mounted in cutter groove, and the cutting edge of blade is parallel with the axis direction of stationary shaft.Along with the rotation of cable insulation sample, blade is near cable insulation specimen surface, and exploit along its circumferential direction, obtain sample section, clear and definite for the inner, middle and outer layer of cable insulation sample can be separated, and the thickness evenness of sample section is good, for the agine mechaism of research off-line core different distance insulating layer material provides good experiment basis.
Description
Technical field
The utility model relates to cable insulation sample cutter sweep.
Background technology
After high-tension cable puts into operation, due to the MULTIPLE COMPOSITE effect of electric stress, mechanical stress and environmental stress, cable insulation layer material can start aging gradually, and final failure of insulation causes the generation of cable insulation breakdown fault.In the research that general high-voltage cross-linking polythene (XLPE) cable insulation material is aging, the preparation of its sample is all confined to adopt XLPE pellet to carry out compressing tablet, by thickness and the smoothness of special mould Control Assay, subsequently laboratory ageing research is carried out to it, but in the ageing research of laboratory, due to the restriction of various factors, the such as time, voltage, and environmental factor etc., there is certain otherness in the extraneous stress condition that its aging condition and the actual charging operation of XLPE cable bear, thus laboratory ageing results is being applied to can not directly use in the research of actual motion cable, need therebetween to set up certain corresponding relation, thus also just need the XLPE cable insulation course sample to difference runs the time limit retired to study, and itself and laboratory aging sample result of study are contrasted, investigate the similarities and differences therebetween.Due to the singularity of high pressure XLPE insulated cable structure, it is interior, domestic and abroad three-layer insulated material can stand not same electric field and temperature in charging operation process, thus certain difference can be there is in its material aging process, so for the analysis of retired high-voltage cable insulating material, the slicing mode of its cable insulation seems particularly important.
In research for XLPE cable insulation course sample, the cutting mode that most employing is traditional, namely the cutting mode being parallel to cable core is adopted, its cutting schematic diagram and sample finished product are as shown in Figure 1, there is following shortcoming in traditional sample cutting mode: the thickness of its gained sample section 1 is for being generally 0.5 mm-2 mm, specimen surface smoothness is limited, has obvious cut channel; To be difficult in test analysis in definite differentiation cable insulation, in, outer three layers of sample, thus can not investigate because XLPE insulated cable typical coaxial structure causes the difference between different insulative layer material; Meanwhile, traditional cutting mode can cause sample to produce a large amount of wastes.
Summary of the invention
Based on this, be necessary the defect for prior art, a kind of cable insulation sample cutter sweep be provided, can obtain distinguishing obvious cable insulation interior, in, outer three layers of sample section, and the thickness evenness of sample section is good.
Its technical scheme is as follows:
A kind of cable insulation sample cutter sweep, comprise blade, stationary shaft, firm banking, described stationary shaft comprises interconnective first construction section, the second construction section, described first construction section is connected with the rotating shaft of lathe, cable insulation sample is enclosed within the second construction section, and described firm banking is arranged on lathe, and firm banking is provided with the cutter groove mated with described blade, described blade is fixedly mounted in cutter groove, and the cutting edge of blade is parallel with the axis direction of stationary shaft.
Its further technical scheme is as follows:
Described cable insulation sample cutter sweep also comprises swell fixture, described second construction section is taper, its one end near the first construction section is large end, one end away from the first construction section is small end, second construction section is hollow-core construction, and described swell fixture is extend in the second construction section to large end by small end.
Be provided with spacing ring between described first construction section, the second construction section, the diameter of described spacing ring is greater than the diameter of described first construction section and the diameter of the second construction section.
The end face that described firm banking contacts with lathe is the first end face, described first end face is stepped, firm banking is the second end face towards the end face of lathe rotating shaft, described cutter groove is inclined on the second end face, end face relative with the first end face on firm banking is the 3rd end face, described 3rd end face is provided with the screw hole being through to cutter groove, and be provided with holding screw in described screw hole, described blade is locked in cutter groove by holding screw.
The axial line of described screw hole is vertical with the vergence direction of described cutter groove.
The land length of described blade is greater than or equal to the length of the first construction section.
Described blade is thickness is 1cm, width is the paper knife of 5cm.
A kind of cable insulation sample cutting method, comprises the steps:
Cable insulation sample is arranged on stationary shaft;
Stationary shaft is fixedly connected with the rotating shaft of lathe;
Blade is arranged in the cutter groove of firm banking;
Be arranged on by firm banking on lathe, the cutting edge of described blade is parallel with the axis direction of cable insulation sample;
Rotating shaft is with the rotational speed of 20 ~ 40 revs/min, and the cutting edge of blade is near the surface of cable insulation sample and exploit along its circumferential direction, obtains sample section.
Its further technical scheme is as follows:
Cable insulation sample is arranged on after on stationary shaft, also comprises the steps:
Swell fixture is extend in the second construction section of the stationary shaft in taper to large end by small end, the second construction section is expanded, thus cable insulation sample is clamped on stationary shaft.
The rotating speed of described rotating shaft is 30 revs/min, and the depth of cut of lathe is that 0.2mm/ turns.
Below the advantage of preceding solution or principle are described:
Above-mentioned cable insulation sample cutter sweep, by arranging stationary shaft, cable insulation sample is arranged on its second construction section, and cable insulation sample not with stationary shaft generation relative movement or rotation, its first construction section is connected with the rotating shaft of lathe, and the rotating shaft of lathe not with stationary shaft generation relative movement or rotation, thus cable insulation sample is rotated along with the axis of rotation of lathe, by arranging the firm banking be connected with lathe, blade is arranged in the cutter groove of firm banking, and the cutting edge of blade is parallel with the axis direction of stationary shaft, along with the rotation of cable insulation sample, blade is near cable insulation specimen surface, and exploit along its circumferential direction, obtain sample section, can by cable insulation sample, in, outer clear and definite separating, and the thickness evenness of sample section is good, for the agine mechaism of research off-line core different distance insulating layer material provides good experiment basis.
Above-mentioned cable insulation sample cutting method, adopts the mode to cable insulation sample ring cutting, clear and definite for the inner, middle and outer layer of cable insulation sample can be separated, and the thickness evenness of sample section is good.For the agine mechaism of research off-line core different distance insulating layer material provides good experiment basis; In cutting process, lathe adopts the slow-speed of revolution, greatly reduces the temperature that in its cutting process, cable insulation sample bears, can not have an impact to the sample Performance Analyses of Slice in later stage; By controlling the rotating speed homogeneity of feed and rotating shaft, can ensure to cut the thickness of rear sample section and the smoothness on surface; And this cutting method can greatly reduce the waste of cable insulation sample.
Accompanying drawing explanation
Fig. 1 is the XLPE cable insulation course sample cutting schematic diagram of prior art;
Fig. 2 is the structural representation of the stationary shaft described in the present embodiment;
Fig. 3 is the structural representation of the firm banking example described in this enforcement;
Fig. 4 is the schematic diagram of the present embodiment cutting cable insulation sample.
Description of reference numerals:
1, sample section, 2, cable insulation sample, 10, blade, 20, stationary shaft, the 210, first construction section, the 220, second construction section, 230, spacing ring, 30, firm banking, 310, cutter groove, 320, the first end face, 330, the second end face, the 340, the 3rd end face, 342, screw hole, 40, swell fixture, 50, holding screw.
Embodiment
As shown in Figures 2 to 4, a kind of cable insulation sample cutter sweep, comprise blade 10, stationary shaft 20, firm banking 30, described stationary shaft 20 comprises interconnective first construction section 210, second construction section 220, described first construction section 210 is connected with the rotating shaft of lathe, cable insulation sample 2 is enclosed within the second construction section 220, described firm banking 30 is arranged on lathe, firm banking 30 is provided with the cutter groove 310 mated with described blade 10, described blade 10 is fixedly mounted in cutter groove 310, and the cutting edge of blade 10 is parallel with the axis direction of stationary shaft 20.
By arranging stationary shaft 20, cable insulation sample 2 is arranged on its second construction section 220, and there is not relative movement or rotation with stationary shaft 20 in cable insulation sample 2, its first construction section 210 is connected with the rotating shaft of lathe, and there is not relative movement or rotation with stationary shaft 20 in the rotating shaft of lathe, thus cable insulation sample 2 is rotated along with the axis of rotation of lathe, by arranging the firm banking 30 be connected with lathe, blade 10 is arranged in the cutter groove 310 of firm banking 30, and the cutting edge of blade 10 is parallel with the axis direction of stationary shaft 20, along with the rotation of cable insulation sample 2, blade 10 is near the surface of cable insulation sample 2, and exploit along its circumferential direction, obtain sample section, can by cable insulation sample 2, in, outer clear and definite separating, and the thickness evenness of sample section is good, for the agine mechaism of research off-line core different distance insulating layer material provides good experiment basis.
As shown in Figure 2, be provided with spacing ring 230 between described first construction section 210, second construction section 220, the diameter of described spacing ring 230 is greater than the diameter of described first construction section 210, and is greater than the diameter of described second construction section 220.Such setting is to make cable insulation sample 2 be limited on the second construction section 220, avoiding it to slide into the first construction section 210, affects blade 10 and carries out annular cutting to it.
Described cable insulation sample cutter sweep also comprises swell fixture 40, described second construction section 220 is in taper, its one end near the first construction section 210 is large end, one end away from the first construction section 210 is small end, second construction section 220 is hollow-core construction, and described swell fixture 40 is extend in the second construction section 220 to large end by small end.Such setting, on the one hand to make cable insulation sample 2 can by small end to holding movement greatly, thus be enclosed within the second installation end smoothly, on the other hand, by progressively stretching into of swell fixture 40, the second installation end is expanded, thus make cable insulation sample 2 securely be stuck on stationary shaft 20, avoid relative movement or rotation occur between the two, sample cutting can be carried out smoothly.
As shown in Figure 3, Figure 4, the end face that described firm banking 30 contacts with lathe is the first end face 320, described first end face 320 is stepped, firm banking 30 is the second end face 330 towards the end face of lathe rotating shaft, described cutter groove 310 is inclined on the second end face 330, end face relative with the first end face 320 on firm banking 30 is the 3rd end face 340, described 3rd end face 340 is provided with the screw hole 342 being through to cutter groove 310, be provided with holding screw 50 in described screw hole 342, described blade 10 is locked in cutter groove 310 by holding screw 50.Such setting, firm banking 30 is made can be firmly arranged on lathe by stair-stepping first end face 320 on the one hand, on the other hand, by tightening or unscrewing holding screw 50, the degree of tightness of blade 10 can be controlled neatly, facilitate installation and removal, in addition, cutter groove 310 is obliquely installed, make blade 10 cutting edge can successfully with the surface contact of cable insulation sample 2, convenient cutting.In the present embodiment, the axial line of described screw hole 342 is vertical with the vergence direction of described cutter groove 310.Such setting makes holding screw 50 act on pressure energy on blade 10 its surface vertical, makes blade 10 be subject to normal pressure and be pressed in cutter groove 310.
The land length of described blade 10 is greater than or equal to the length of the first construction section 210.Such setting is to make blade 10 in cutting process, the surface of the axial direction of the cable insulation sample 2 on the first construction section 210 all can be applied to, and avoids blade 10 clamping stagnation on cable insulation sample 2.In this enforcement, described blade 10 for thickness be 1cm, width is the paper knife of 5cm.
A kind of cable insulation sample cutting method, comprises the steps:
Cable insulation sample 2 is arranged on stationary shaft 20;
Stationary shaft 20 is fixedly connected with the rotating shaft of lathe;
Blade 10 is arranged in the cutter groove 310 of firm banking 30;
Be arranged on lathe by firm banking 30, the cutting edge of described blade 10 is parallel with the axis direction of cable insulation sample 2;
Rotating shaft is with the rotational speed of 20 ~ 40 revs/min, and the cutting edge of blade 10 is near the surface of cable insulation sample 2 and exploit along its circumferential direction, obtains sample section.In the present embodiment, the rotating speed of described rotating shaft is 30 revs/min, and the depth of cut of lathe is that 0.2mm/ turns, thus can obtain the sample section that thickness is 0.2mm, according to actual samples slice thickness demand, and can the depth of cut of flexible lathe.
Cable insulation sample 2 is arranged on after on stationary shaft 20, also comprises the steps:
Swell fixture 40 is extend in the second construction section 220 of the stationary shaft 20 in taper to large end by small end, the second construction section 220 is expanded, thus cable insulation sample 2 is clamped on stationary shaft 20.Make cable insulation sample 2 with stationary shaft 20, relative movement or rotation not occur, and can rotate with the rotation of stationary shaft 20.
Cable insulation sample cutting method described in the present embodiment, adopts the mode to cable insulation sample 2 ring cutting, clear and definite for the inner, middle and outer layer of cable insulation sample 2 can be separated, and the thickness evenness of sample section is good.For the agine mechaism of research off-line core different distance insulating layer material provides good experiment basis; In cutting process, lathe adopts the slow-speed of revolution, greatly reduces the temperature that in its cutting process, cable insulation sample 2 bears, can not have an impact to the sample Performance Analyses of Slice in later stage; By controlling the rotating speed homogeneity of feed and rotating shaft, can ensure to cut the thickness of rear sample section and the smoothness on surface; And this cutting method can greatly reduce the waste of cable insulation sample 2.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this instructions is recorded.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (7)
1. a cable insulation sample cutter sweep, it is characterized in that, comprise blade, stationary shaft, firm banking, described stationary shaft comprises interconnective first construction section, the second construction section, and described first construction section is connected with the rotating shaft of lathe, and cable insulation sample is enclosed within the second construction section, described firm banking is arranged on lathe, firm banking is provided with the cutter groove mated with described blade, and described blade is fixedly mounted in cutter groove, and the cutting edge of blade is parallel with the axis direction of stationary shaft.
2. cable insulation sample cutter sweep as claimed in claim 1, it is characterized in that, it also comprises swell fixture, described second construction section is taper, its one end near the first construction section is large end, one end away from the first construction section is small end, and the second construction section is hollow-core construction, and described swell fixture is extend in the second construction section to large end by small end.
3. cable insulation sample cutter sweep as claimed in claim 2, it is characterized in that, be provided with spacing ring between described first construction section, the second construction section, the diameter of described spacing ring is greater than the diameter of described first construction section and the diameter of the second construction section.
4. cable insulation sample cutter sweep as claimed in claim 3, it is characterized in that, the end face that described firm banking contacts with lathe is the first end face, described first end face is stepped, firm banking is the second end face towards the end face of lathe rotating shaft, described cutter groove is inclined on the second end face, end face relative with the first end face on firm banking is the 3rd end face, described 3rd end face is provided with the screw hole being through to cutter groove, be provided with holding screw in described screw hole, described blade is locked in cutter groove by holding screw.
5. cable insulation sample cutter sweep as claimed in claim 4, it is characterized in that, the axial line of described screw hole is vertical with the vergence direction of described cutter groove.
6. the cable insulation sample cutter sweep as described in any one of claim 1 to 5, is characterized in that, the land length of described blade is greater than or equal to the length of the first construction section.
7. the cable insulation sample cutter sweep as described in any one of claim 1 to 5, is characterized in that, described blade is thickness is 1cm, width is the paper knife of 5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420735727.XU CN204214670U (en) | 2014-11-28 | 2014-11-28 | Cable insulation sample cutter sweep |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420735727.XU CN204214670U (en) | 2014-11-28 | 2014-11-28 | Cable insulation sample cutter sweep |
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| CN204214670U true CN204214670U (en) | 2015-03-18 |
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| CN201420735727.XU Active CN204214670U (en) | 2014-11-28 | 2014-11-28 | Cable insulation sample cutter sweep |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359708A (en) * | 2014-11-28 | 2015-02-18 | 广东电网有限责任公司珠海供电局 | Cable insulating layer specimen cutting device and cutting method |
| CN105676096A (en) * | 2016-04-07 | 2016-06-15 | 南京南瑞集团公司 | Girdling sampling device of large cable insulating strip and method of device |
| CN108562453A (en) * | 2018-07-06 | 2018-09-21 | 西安西电光电缆有限责任公司 | A kind of railway run-through ground line protective metal shell sampling method and sampler |
-
2014
- 2014-11-28 CN CN201420735727.XU patent/CN204214670U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359708A (en) * | 2014-11-28 | 2015-02-18 | 广东电网有限责任公司珠海供电局 | Cable insulating layer specimen cutting device and cutting method |
| CN105676096A (en) * | 2016-04-07 | 2016-06-15 | 南京南瑞集团公司 | Girdling sampling device of large cable insulating strip and method of device |
| CN105676096B (en) * | 2016-04-07 | 2018-03-09 | 南京南瑞集团公司 | The ring cutting sampler and its method of a kind of large scale cable insulation piece |
| CN108562453A (en) * | 2018-07-06 | 2018-09-21 | 西安西电光电缆有限责任公司 | A kind of railway run-through ground line protective metal shell sampling method and sampler |
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