CN215343707U - Nondestructive cutting device for cable insulation layer - Google Patents
Nondestructive cutting device for cable insulation layer Download PDFInfo
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- CN215343707U CN215343707U CN202121777793.XU CN202121777793U CN215343707U CN 215343707 U CN215343707 U CN 215343707U CN 202121777793 U CN202121777793 U CN 202121777793U CN 215343707 U CN215343707 U CN 215343707U
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- cable
- cutting
- cutter
- hob
- insulation layer
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- 238000005520 cutting process Methods 0.000 title claims abstract description 63
- 238000009413 insulation Methods 0.000 title claims description 27
- 230000005540 biological transmission Effects 0.000 claims description 24
- 238000005096 rolling process Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 5
- 239000004020 conductor Substances 0.000 abstract description 22
- 238000002360 preparation method Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Abstract
The utility model discloses a nondestructive cutting device for a cable insulating layer, which comprises a hob and a cutter, wherein the hob is used for cutting the cable insulating layer, and the hob is used for cutting the insulating layer of a cable along the direction vertical to the axis of the cable; the cutter is used for cutting the insulating layer of the cable along the direction parallel to the axis of the cable. The technical scheme adopted by the utility model can not only reserve the end insulating layer to ensure that the end conductor is not loosened and has no damage to the cable conductor, but also eliminate the potential safety hazard in the sample preparation process.
Description
Technical Field
The utility model belongs to the technical field of nondestructive cutting, and particularly relates to a nondestructive cutting device for a cable insulation layer.
Background
The direct current resistance of the cable conductor is one of key indexes for representing the electrical performance of the cable, the accurate measurement of the direct current resistance of the cable conductor is vital to the guarantee of the quality of the cable, an insulating layer at the end part cannot be reserved in the sample preparation of the traditional method, the end part conductor is easy to loosen, and the accuracy of a direct current resistance test result of the conductor is influenced; the method for cutting the cable insulation layer and ensuring the result accuracy under the condition of meeting the standard requirement is a great problem in the direct current resistance test of the cable conductor.
In summary, there is a need for a new device for cutting insulation layers of cables without damage.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model aims to provide a cable insulation layer nondestructive cutting device, which can not only keep an end insulation layer to ensure that an end conductor is not loose and has no damage to the cable conductor, but also eliminate potential safety hazards in the sample preparation process.
In order to achieve the purpose, the utility model adopts the technical scheme that: a cable insulation layer nondestructive cutting device comprises a hob and a cutter, wherein the hob and the cutter are used for cutting the cable insulation layer; the hob cutter is used for cutting the insulating layer of the cable along the direction perpendicular to the axis of the cable; the cutter is used for cutting the insulating layer of the cable along the direction parallel to the axis of the cable.
Further, the hobbing cutters are provided with two, two hobbing cutters are arranged in parallel, cutting surfaces of the two hobbing cutters are parallel and level, and the length of each cutter is equal to the distance between the two hobbing cutters.
Further, the device also comprises a clamping device for positioning the cable; the clamping device comprises a first rolling shaft, a second rolling shaft and a third rolling shaft, and the three rolling shafts are used for clamping and positioning the cable.
Furthermore, the third rolling shaft is used for supporting the cable, so that the axis of the cable is as high as the axis of the rolling shaft; the first roller and the second roller are used for controlling the axis of the cable to coincide with the cutting line of the cutter.
Further, still include current stop device, current stop device and the wire electrical contact of the one end of waiting to cut the cable, and current stop device and cutter and hobbing cutter between insulating.
Furthermore, the current limiting device is connected with a 24V relay, and the current limiting device is controlled by the 24V relay.
Furthermore, the current limiting device is installed on the fixed support through an insulating epoxy material.
Furthermore, the rolling shaft is pulled by a rolling shaft hydraulic transmission device, the hob is pulled by a hob hydraulic transmission device, and the cutter is pulled by a cutter hydraulic transmission device.
Further, the thickness of the cutter and the cutter of the hob is 5mm, and the material is white steel; the radius of the hob is 60 mm; the width of the cutter is 80mm, the length of the cutter is 200mm, and the length of the cutter is consistent with the distance between the two hobs.
Further, the feeding precision of the cutter and the hob is 0.1 mm.
Compared with the prior art, the cutting device has the advantages that the cutting device is provided with the two hobbing cutters and the cutter to cut the insulating layer of the cable in a matching mode, the insulating layer of the cable end can be cut, the insulating layer of the cable end cannot be influenced in the cutting process, only the insulating layer of the cut part is removed, the operation is simple, the loose condition of the conductor at the cable end can be effectively avoided, the potential safety hazard in the sample preparation process can be eliminated, and the accurate direct-current resistance test result of the conductor is ensured.
Furthermore, the current limiting device and the fixing support are fixed by insulating epoxy materials, so that insulation between the current limiting device and the fixing support is guaranteed, and through the arrangement of the current limiting device, the current limiting device is organically combined with a cable conductor and a cutter or a hob, signals can be effectively fed back when the cutter or the hob is in contact with a semi-conducting layer of a cable, the problem that a traditional method is easy to damage the cable conductor during sample preparation is effectively avoided, and the requirements of relevant standards on sample preparation are well met.
Furthermore, the radius of the hob cutter is 60mm, the width of the hob cutter is 80mm, and the thickness of the insulation layer of the existing 500kV voltage-class cable is not more than 40mm at most, so that the hob cutter can realize the nondestructive cutting of the insulation layer of the cable with 10kV or above voltage classes.
Further, the fixed support is mainly made of stainless steel so as to ensure that the strength of the main body is sufficient in the pressing and cutting process.
Furthermore, the material of hobbing cutter and cutter is the white steel, makes hobbing cutter and cutter have the hardness height, and the wearability is good, and cutting speed is fast moreover, cuts the limit sharpness, still has shock-resistant good performance, utilizes the white steel can effectual improvement lathe production efficiency.
Furthermore, the roller adopts hydraulic transmission, so that the inertia force is small; the traction speed can be stably and automatically adjusted within a given range; overload protection is easily achieved.
Furthermore, the distance between the two rolling cutters is equal to the length of the cutter, and the cutter is arranged between the two rolling cutters in a projection view, so that the insulating layer can be well cut and peeled.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below; it is obvious that the drawings in the following description are some embodiments of the utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic view of the structure of an unclamped cable according to the present invention;
FIG. 2 is a schematic view of the construction of the clamped cable of the present invention;
in the figure, 1, a cutter; 2. a cutter hydraulic transmission device; 3. hobbing cutters; 4. a hob hydraulic transmission device; 5. a third roller; 6. a third roller hydraulic transmission device; 7. a first roller; 8. a second roller; 9. an upper roller hydraulic transmission device; 10. fixing a bracket; 11. current stop device.
Detailed Description
In order to make the purpose, technical effect and technical solution of the embodiments of the present invention clearer, the following clearly and completely describes the technical solution of the embodiments of the present invention with reference to the drawings in the embodiments of the present invention; it is to be understood that the described embodiments are only some of the embodiments of the present invention. Other embodiments, which can be derived by one of ordinary skill in the art from the disclosed embodiments without inventive faculty, are intended to be within the scope of the utility model.
As shown in fig. 1, the device for cutting the cable insulation layer without damage of the utility model comprises a hob 3 and a cutter 1 for cutting the cable insulation layer, wherein; the hob 3 is used for cutting the insulating layer of the cable along the direction vertical to the axis of the cable; the cutter 1 is used for cutting the insulating layer of the cable along the direction parallel to the axis of the cable; in the embodiment shown in fig. 1, two hobs 3 are arranged, the two hobs 3 are arranged in parallel, the cutting surfaces of the two hobs 3 are flush, the length of the cutter 1 is equal to the distance between the two hobs 3, in the actual operation process, firstly, the hobs are used for cutting an insulating layer of a cable in an annular mode, then, the cutter is used for longitudinally cutting the insulating layer of the cutting section, and accordingly, the insulating layer is peeled off.
The cable cutting device further comprises a clamping device for positioning the cable, so that the cable is accurately positioned, and the subsequent insulating layer cutting can be stably operated as required, wherein the clamping device comprises a first rolling shaft 7, a second rolling shaft 8 and a third rolling shaft 5, and the three rolling shafts are used for clamping and positioning the cable; in the embodiment shown in fig. 1, the third roller 5 is used for supporting the cable so that the axis of the cable is equal to the axis of the hob 3; the first roller 7 and the second roller 8 are used for controlling the axis of the cable to coincide with the cutting line of the cutter 1.
As a preferred embodiment of the present invention, the current limiting device 11 is installed on the fixing bracket 10 through an insulating epoxy material, the current limiting device 11 is in electrical contact with a lead of one end of a cable to be cut, the current limiting device 11 is connected with a 24V relay, and the current limiting device 11 is controlled by the 24V relay; the current limiting device 11 is insulated from the cutter 1 and the hob 3; adopt above-mentioned structural design, can be when the hobbing cutter contacts cable conductor semi-conducting layer, cutter, cable conductor and electric current stop device form and switch on the return circuit, relay feedback signal, program control hobbing cutter stop the feed, and the hobbing cutter withdraws from the operation after this position continues the circular cutting 20 seconds, and the above-mentioned setting can effectually guarantee that the wire can not receive the damage in the cable to the cable insulation layer cutting process, has guaranteed measurement accuracy.
In the preferred embodiment of the utility model, the roller is pulled by a roller hydraulic transmission device, the hob 3 is pulled by a hob hydraulic transmission device 4, and the cutter 1 is pulled by a cutter hydraulic transmission device 2; the thickness of the cutters of the cutter and the hob is 5mm, and the materials of the cutters and the hob are white steel; the radius of the hob is 60 mm; the width of the cutter is 80mm, the length of the cutter is 200mm, and the length of the cutter is consistent with the distance between the two hobs; the feeding precision of the cutter and the hob is 0.1 mm.
In a specific embodiment of the present invention, based on the technical scheme provided by the present invention, firstly, the fixing support 10 and the workbench are fixedly installed, and 3 roller hydraulic transmission devices are installed on the fixing support 10, and are used for stably fixing the cable to be cut; the hob is fixed on the roller hydraulic transmission device through a positioning screw, the cable to be cut is fixed through 3 rollers, and the rollers are stably pulled by the roller hydraulic transmission device, so that the stability of the device is ensured; a cutter hydraulic transmission device is arranged above the fixed support, and a cutter is fixedly arranged on the cutter hydraulic device and used for longitudinally cutting the cable; still install hobbing cutter hydraulic transmission on the fixed bolster, hobbing cutter hydraulic transmission is connected with two hobbing cutters, and the distance is 200mm between 2 hobbing cutters. The matched cutter can simultaneously cut two ends of the part to be cut of the cable to be cut; and the roller hydraulic transmission device, the hob hydraulic transmission device and the cutter hydraulic transmission device are all fixed on the fixed support. The fixed support is made of stainless steel and serves as a supporting structure of the whole device; the fixed support is also provided with a display screen, and the display screen is used for inputting the arrangement of the displacement of the hob, the cutter, the depth of the hob and the rolling shaft; the cutters selected by the hob cutter and the cutter are all made of white steel with the thickness of 5mm, the cable is fixedly clamped by the cooperation of the rolling shaft, and then the outer insulating layer of the cable is cut by the cooperation of the hob cutter and the cutter, wherein the radius of the hob cutter is 60 mm; the width of the cutter is 80mm, the length of the cutter is 200mm, and the length of the cutter is consistent with the distance between the two hobs; the feed depth of a hydraulic transmission device of the cutter and the hob is controlled by numerical control, the current limiting device is fixed on the fixed support through an insulating epoxy material, the current limiting device is not conducted with the fixed support, and the current limiting device is controlled by a 24V relay; preferably, the distance between the current limiting device and the close hob is 100 mm; in the embodiment, the feeding precision of the cutter and the hob is controlled to be 0.01 mm; the cutting depth of the cutter is set by a program, and the current limiting device is used for limiting the cutting depth, so that the nondestructive cutting of the cable insulating layer with the voltage level of 10kV or above is realized.
In another embodiment of the utility model, firstly, the outer diameter of the cable and the core diameter of the conductor of the cable are measured by a micrometer; then, the cable is placed in a clamping device, and good contact between a cable conductor and a current limiting device is ensured when the cable is clamped; before the cutting begins, make cutter and the contact of cable outer insulation layer, and begin to rotate the roller bearing, and input cable external diameter and core diameter parameter in the display screen, the gyro wheel drives the cable and rotates the in-process and utilizes two hobbing cutters to carry out the circular cutting to the cable insulation layer, when the hobbing cutter contacted cable conductor semi-conducting layer, hobbing cutter, cable conductor and current stop device formed the circuit that switches on, relay feedback signal, program control hobbing cutter stopped the feed, the hobbing cutter withdraws from the operation after this position continues the circular cutting 20 seconds, can guarantee that the hobbing cutter carries out complete circular cutting to the cable insulation layer. After the roller stops rotating, the cutter is used for longitudinally cutting the cable insulating layer, when the cutter contacts the cable conductor semi-conducting layer, the cutter, the cable conductor and the current limiting device form a conducting loop, a relay feeds back a signal, and the program controls the cable conductor to immediately exit from the running. The operation roller rotates 90 degrees, and the cutter is used for slitting again, and the insulating layer of the cable can be easily stripped after repeating the process for 3-4 times, and the insulating layer at the end part can be reserved.
Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can make modifications and equivalents to the embodiments of the present invention without departing from the spirit and scope of the present invention, which is set forth in the claims of the present application.
Claims (10)
1. A cable insulation layer nondestructive cutting device is characterized by comprising a hob (3) and a cutter (1) which are used for cutting the cable insulation layer, wherein;
the hob (3) is used for cutting the insulating layer of the cable along the direction vertical to the axis of the cable; the cutting knife (1) is used for cutting the insulating layer of the cable along the direction parallel to the axis of the cable.
2. The device for cutting the cable insulation layer without damage according to claim 1, wherein the number of the rolling cutters (3) is two, the two rolling cutters (3) are arranged in parallel, the cutting surfaces of the two rolling cutters (3) are flush, and the length of the cutting cutter (1) is equal to the distance between the two rolling cutters (3).
3. The apparatus for nondestructive cutting of cable insulation according to claim 1 further comprising a holding means for positioning the cable; the clamping device comprises a first rolling shaft (7), a second rolling shaft (8) and a third rolling shaft (5), and the three rolling shafts are used for clamping and positioning the cable.
4. The device for cutting the cable insulation layer without damage according to claim 3, wherein the third roller (5) is used for supporting the cable to enable the axis of the cable to be equal to the axis of the hob (3) in height; the first roller (7) and the second roller (8) are used for controlling the axis of the cable to coincide with the cutting line of the cutter (1).
5. The device for the nondestructive cutting of the insulating layer of the cable as claimed in claim 1, further comprising a current limiting device (11), wherein the current limiting device (11) is electrically contacted with a lead of one end of the cable to be cut, and the current limiting device (11) is insulated from the cutter (1) and the hob (3).
6. The device for the nondestructive cutting of an insulating layer of a cable as claimed in claim 5, characterized in that a 24V relay is connected to the current limiting device (11), and the current limiting device (11) is controlled by the 24V relay.
7. The device for the nondestructive cutting of cable insulation according to claim 5, characterized in that the current limiting device (11) is mounted on the fixed support (10) by means of an insulating epoxy material.
8. The device for cutting the cable insulation layer without damage according to claim 4, characterized in that the roller is pulled by a roller hydraulic transmission device, the hob (3) is pulled by a hob hydraulic transmission device (4), and the cutter (1) is pulled by a cutter hydraulic transmission device (2).
9. The device for cutting the cable insulation layer without damage according to claim 1, wherein the thickness of the cutter and the hob is 5mm, and the material is white steel; the radius of the hob is 60 mm; the width of the cutter is 80mm, the length of the cutter is 200mm, and the length of the cutter is consistent with the distance between the two hobs.
10. The apparatus for cutting a cable insulation layer without damage according to claim 1, wherein the precision of the cutting knife and the hob feeding is 0.1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121777793.XU CN215343707U (en) | 2021-07-30 | 2021-07-30 | Nondestructive cutting device for cable insulation layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121777793.XU CN215343707U (en) | 2021-07-30 | 2021-07-30 | Nondestructive cutting device for cable insulation layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215343707U true CN215343707U (en) | 2021-12-28 |
Family
ID=79574760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121777793.XU Active CN215343707U (en) | 2021-07-30 | 2021-07-30 | Nondestructive cutting device for cable insulation layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215343707U (en) |
-
2021
- 2021-07-30 CN CN202121777793.XU patent/CN215343707U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231228 Address after: No. 669, Hangtian Middle Road, Xi'an national civil aerospace industry base, Shaanxi 710100 Patentee after: Electric Power Research Institute of State Grid Shaanxi Electric Power Co.,Ltd. Patentee after: National Network (Xi'an) Environmental Protection Technology Center Co.,Ltd. Address before: No.669, Hangtian Middle Road, Chang'an District, Xi'an City, Shaanxi Province Patentee before: STATE GRID SHAANXI ELECTRIC POWER Research Institute Patentee before: National Network (Xi'an) Environmental Protection Technology Center Co.,Ltd. |
|
| TR01 | Transfer of patent right |