CN219625319U - Device for extrusion insulating cable shielding layer stripping test - Google Patents

Abstract

The device for the extrusion insulating cable shielding layer strippable test comprises an upper clamp body and a lower clamp body, wherein the upper clamp body, a cable sample and the lower clamp body are sequentially connected from top to bottom; the upper clamp body comprises an upper clamp base which is connected with the first adapter through an adjusting nut; a first clamping plate is arranged on one side of the upper clamp base, and an avoidance groove is arranged on the other side of the upper clamp base; the first clamping plate is connected with the second clamping plate through a first spring, the second clamping plate is connected with the first fixing plate through a first guide rod, and a first adjusting handle is arranged on one side of the first fixing plate; the lower fixture body comprises a lower fixture fixed base, a sliding plate is arranged on the side surface of the lower fixture fixed base, and a second adapter is arranged on the bottom surface of the lower fixture fixed base; the lower clamp fixing base is provided with a fourth clamping plate, a second spring, a third clamping plate, a second guide rod, a second fixing seat and a second adjusting handle. The device simple structure, convenient to use can be according to the different customization adapter of the pulling force machine producer of purchasing in the market, and market universalization degree is higher.

Description

Device for extrusion insulating cable shielding layer stripping test

Technical Field

The utility model relates to a wire and cable test device, in particular to a device for a stripping test of an extruded insulated cable, and belongs to the technical field of wires and cables.

Background

A power cable is a cable used for transmitting or distributing high-power electric energy in a power system. The extruded insulating power cable is an important variety in wires and cables because of simple structure, convenient manufacturing and processing, and convenient construction and maintenance.

The extruded insulating power cable is also called a rubber plastic cable, which is an insulated power cable using high molecular polymer, and is formed by twisting copper or aluminum wires into a conductor, and then extruding and insulating, (metal belt), (inner liner/isolation sleeve), (armor layer) and a sheath layer (if the cable forming process is performed, necessary filling materials are added). Common plastics are polyvinyl chloride, polyethylene, crosslinked polyethylene.

The extruded insulated power cable has huge market demand and wide application range, and once the potential safety hazard occurs, accidents such as fire disaster and the like are extremely easy to cause, so that the market is more closed from the source, and the product quality is ensured.

In the long-term use process of the extruded insulating power cable, the insulating layer is gradually aged due to the simultaneous effects of high temperature and thermal circulation, and the mechanical property, physical property and breakdown field strength of the insulating material after aging are reduced, so that the service life of the cable is reduced, and the aging test is to test the stability of the physical and mechanical properties of the cable insulation or the sheath under the condition of approaching to operation as much as possible.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides a device for a stripping test of an extruded insulating power cable semi-conductive insulating shielding layer, which is matched with a nonmetal pulling machine in the market and is used for measuring the tensile strength and the elongation at break of the extruded insulating power cable insulating shielding layer before and after aging.

The utility model adopts the following technical scheme.

The first aspect of the utility model provides a device for a stripping test of an extruded insulated cable, which comprises an upper clamp body and a lower clamp body, wherein the upper clamp body, a cable sample and the lower clamp body are sequentially connected from top to bottom;

the upper clamp body comprises an upper clamp base which is connected with the first adapter through an adjusting nut; a first clamping plate is arranged on one side of the upper clamp base, and an avoidance groove is arranged on the other side of the upper clamp base; the first clamping plate is connected with the second clamping plate through a first spring, the second clamping plate is connected with the first fixing plate through a first guide rod, and a first adjusting handle is arranged on one side of the first fixing plate; the lower fixture body comprises a lower fixture fixed base, a fourth clamping plate, a second spring, a third clamping plate, a second guide rod, a second fixing seat and a second adjusting handle are arranged on the lower fixture fixed base, and a second adapter is arranged on the bottom surface of the lower fixture fixed base.

Further, the upper clamp base is L-shaped, threaded holes matched with the adapter are formed in the top of the upper clamp base, and guide rod connecting holes matched with the first clamping plates are symmetrically formed in the bottom of the upper clamp base.

Further, the bottom of the first adapter is connected with the upper clamp base through a screw pair, and the adjusting nut can be locked when the first adapter is matched with the upper clamp base to a proper position;

the top of the first adapter is provided with a pin hole.

Further, guide rod mounting holes matched with the upper clamp base are symmetrically formed in the first clamping plate, the second clamping plate and the first fixing plate;

the first clamping plate and the second clamping plate are provided with teeth which are meshed with each other and can be used for clamping a sample.

Further, a threaded hole matched with the first adjusting handle is formed in the middle of the first fixing plate;

the first adjusting handle is T-shaped, and one threaded end of the first adjusting handle is matched with the first fixing plate threaded pair.

Further, a high scaffold screwing screw is arranged on the side part of the lower clamp fixing base;

the bottom of the lower fixture fixing base is provided with a chute structure, and the chute structure is provided with a sliding plate matched with the chute;

the shape of the sliding plate is matched with that of the sliding groove, and a threaded hole matched with the second adapter is formed in the middle of the sliding plate.

Further, second guide rod connecting holes are symmetrically formed in two ends of the second fixing seat, and a threaded hole matched with the second adjusting handle is formed in the middle of the second fixing seat;

the second adjusting handle is T-shaped, and one threaded end of the second adjusting handle is matched with the second fixing seat thread pair.

Further, second guide rod connecting holes are symmetrically formed in two ends of the fourth clamping plate, a plurality of groups of clamping heads are arranged in the middle of the fourth clamping plate and the middle of the third clamping plate in a protruding mode, one end of each clamping head is provided with a V-shaped opening, and a sawtooth structure is arranged on each clamping head.

Compared with the prior art, the device can complete the peeling test of the extrusion insulating power cable semi-conductive shielding layer by matching with the tension machine. When the device is used, the cable sample is placed into the lower clamp body, the third clamping plate is extruded to the fourth clamping plate through the adjusting handle, and finally the cable sample is clamped. And (3) placing a shielding layer sample piece which is stripped according to the standard (GB/T12706.2) at the top of the cable sample into an upper clamp body, extruding a second clamping plate to a first clamping plate through a first adjusting handle, and finally clamping the shielding layer of the test part. And according to the difference of cable sample diameter size, the side of going up the anchor clamps base is provided with dodges the groove to prevent the interference of sample and last anchor clamps body. The base of the lower fixture body is provided with a sliding plate, and the purpose of the base is to adjust the position of the sliding plate to keep the test sample in a vertical state all the time when the test samples with different diameters of wires and cables are used for experiments. The device simple structure, convenient to use can be according to the different customization adapter of the pulling force machine producer of purchasing in the market, and market universalization degree is higher.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an apparatus for use in a stripping test for an extruded insulated cable shield;

FIG. 2 is a schematic structural view of an upper fixture body in an apparatus for use in a stripping test for an extruded insulated cable shield;

FIG. 3 is a schematic view of the structure of a lower fixture in an apparatus for use in a stripping test for an extruded insulated cable shield;

FIG. 4 is a schematic view of the upper fixture base in an apparatus for use in a squeeze-wrapped insulated cable shield peel test;

FIG. 5 is a schematic view of the structure of a lower fixture fixing base in an apparatus for a peeling test of an extruded insulation cable shielding layer;

in the figure: the device comprises a 1-upper clamp body, a 2-cable sample, a 3-lower clamp body, a 4-upper clamp base, a 51-first adapter, a 52-second adapter, a 6-adjusting screw, a 7-first clamping plate, an 8-second clamping plate, a 9-first guide rod, a 10-first adjusting handle, a 11-first spring, a 12-first fixing plate, a 13-lower clamp fixing base, a 14-sliding plate, a 15-second adjusting handle, a 16-second fixing seat, a 17-second guide rod, a 18-third clamping plate, a 19-second spring, a 20-fourth clamping plate and a 21-high scaffold screwing screw.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The described embodiments of the utility model are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art without making any inventive effort, are within the scope of the present utility model.

Referring to fig. 1 to 5, in an embodiment of the present utility model, an apparatus for a peeling test of an extruded insulation cable shielding layer includes an upper clamp body 1 and a lower clamp body 3. The upper clamp body 1 is installed in an upper installation groove of the tensile machine through a first adapter 51 at the top, and the lower clamp body 3 is installed in a lower installation groove of the tensile machine through a second adapter 52 at the bottom. The first adapter 51, the second adapter 52 and the pulling machine are connected by pins.

The upper clamp body 1 comprises an upper clamp base 4, a first adapter 51, an adjusting screw 6, a first clamping plate 7, a second clamping plate 8, a first guide rod 9, a first adjusting handle 10, a first spring 11 and a first fixing plate 12. Preferably, the upper clamp base 4 is a high-quality carbon plate with the thickness of 15mm, and the surface is plated with hard chromium, and the shape of the upper clamp base is L-shaped. The top of going up anchor clamps base 4 is provided with the screw hole with first adapter 51 complex, goes up anchor clamps base 4 one side and is equipped with first splint 7, the bottom symmetry of going up anchor clamps base 4 is provided with the first guide arm 9 connecting hole with first splint 7 matched with, in order to make test sample 2 not interfere with last anchor clamps body 1, the side of going up anchor clamps base 4 still is provided with and dodges the notch. The bottom of the first adapter 51 is connected with the upper fixture base 4 through a screw pair, and a pin hole is formed in the top of the first adapter 51. The adjustment nut 6 may be locked when the first adapter 51 is mated in place with the upper clamp base 4. The first guide rod 9, the first clamping plate 7, the first spring 11, the second clamping plate 8 and the first fixing plate 12 are sequentially arranged on the upper clamp base 4. The first clamping plate 7, the second clamping plate 8 and the first fixing plate 12 are symmetrically provided with first guide rod 9 mounting holes matched with the upper clamp base 4. The first clamping plate 7 and the second clamping plate 8 are provided with teeth which are meshed with each other and can be used for clamping a sample. The first clamping plate 7 and the second clamping plate 8 are symmetrically provided with first springs 11 in the middle, and the first clamping plate 7 is connected with the second clamping plate 8 through the first springs 11. Preferably, the first spring 11 is 65 Mn. The second clamping plate 8 is connected with the first fixing plate 12 through the first guide rod 9, a first adjusting handle 10 is arranged on one side of the first fixing plate 12, and a threaded hole matched with the first adjusting handle 10 is formed in the middle of the first fixing plate 12. The first adjusting handle 10 is T-shaped, and one threaded end of the first adjusting handle is matched with the threaded pair of the first fixing plate 12. When the cable sample clamping device is used, the shaft end surface of one side of the threads of the first adjusting handle 10 is propped against the second clamping plate 8 to clamp the sample, and when the threads of the first adjusting handle 10 are loosened, the first fixing plate 12 can be propped open under the action of spring force to enable the cable sample 2 to be separated from the clamp.

The lower fixture body 3 comprises a lower fixture fixing base 13, a sliding plate 14, a second adjusting handle 15, a second fixing seat 16, a second guide rod 17, a third clamping plate 18, a second spring 19, a fourth clamping plate 20, a high scaffold screw 21 and a second adapter 52. The top of the lower fixture fixing base 13 is provided with bolt fixing holes corresponding to the second fixing base 16 and the fourth clamping plate 20. The side of the lower fixture fixing base 13 is provided with a threaded hole matched with the high scaffold screwing screw 21, and the bottom of the lower fixture fixing base 13 is provided with a sliding groove structure matched with the sliding plate 14. The shape of the sliding plate 14 is matched with the sliding groove of the lower fixture fixed base 13, and a threaded hole matched with the second adapter 52 is arranged in the middle of the sliding plate 14. The second adapter 52 is identical in structure to the second adapter 51. The second fixing seat 16 and the third clamping plate 20 are respectively connected with the lower clamp fixing base 13 through threaded connecting holes at the bottoms. The two ends of the second fixing seat 16 are symmetrically provided with second guide rod 17 connecting holes, and the middle of the second fixing seat 16 is provided with a threaded hole matched with the second adjusting handle 15. The two ends of the fourth right clamping plate 20 are symmetrically provided with second guide rod 17 connecting holes, a plurality of groups of chucks are arranged in the middle of the fourth clamping plate 20 in a protruding mode, and the tops of the chucks are of a V-shaped structure. In order to prevent the samples from loosening during clamping, the ends of the multiple groups of chucks are provided with saw tooth-shaped tooth structures. The third clamping plate 18 is connected with the second fixing seat 16 and the fourth clamping plate 20 through the second guide rod 17, the clamping heads of the third clamping plate 18 are the same as those of the fourth clamping plate 20, and the clamping heads of the third clamping plate and the fourth clamping plate are in relative positions. The second springs 19 (65 Mn) are symmetrically arranged between the third clamping plate 18 and the fourth clamping plate 20. The second adjusting handle 15 is T-shaped, and one threaded end of the second adjusting handle is matched with the threaded pair of the second fixing seat 16. When the cable sample clamping device is used, the threaded side end surface of the second adjusting handle 15 is pressed against the third clamping plate 18 to clamp the sample, and when the threads of the second adjusting handle 15 are loosened, the third fixing plate 18 can be pushed away by the action of spring force, so that the cable sample 2 is separated from the clamp.

Another embodiment of the present utility model provides a method for using an apparatus for a squeeze-wrapped insulation cable shielding layer peel test, comprising:

step 1, an upper clamp body 1 is installed into an upper installation groove of a tension machine through a first adapter 51 at the top, and an adjusting nut 6 can be locked when the first adapter 51 is matched with an upper clamp base 4 to a proper position; the lower clamp body 3 is arranged in a lower mounting groove of the tension machine through a second adapter 52 at the bottom;

step 2, placing the lower end of the cable sample 2 into a space formed by a lower clamp fixing base 13, a third clamping plate 18, a second spring 19 and a fourth clamping plate 20 in a lower clamp body 3, extruding the third clamping plate 18 to the fourth clamping plate 20 by a second adjusting handle 15 through a screw thread pair in the middle of a second fixing seat 16, compressing the second spring 19 along a second guide rod 17 under the thrust of the third clamping plate 18, and finally clamping the lower end of the sample cable 2;

and 3, stripping the top of the cable sample 2 in the step 2 according to the standard, putting the stripped shielding layer sample into the upper clamp base 4, extruding the second clamping plate 8 to the first clamping plate 7 by the second adjusting handle 10 through the screw thread pair in the middle of the first fixing plate 12, and compressing the first spring 11 along the first guide rod 9 under the thrust of the second clamping plate 8 to clamp the shielding layer of the tested part of the cable sample 2.

Compared with the prior art, the device is matched with the tension machine, and the strippable test of the extruded insulating power cable semi-conductive shielding layer can be completed. When the device is used, the cable sample is placed into the lower clamp body, the third clamping plate is extruded to the fourth clamping plate through the second adjusting handle, and finally the cable sample is clamped. And (3) placing a shielding layer sample piece which is stripped according to the standard (GB/T12706.2) at the top of the cable sample into an upper clamp body, extruding a second clamping plate to a first clamping plate through a first adjusting handle, and finally clamping the shielding layer of the test part. And according to the difference of cable sample diameter size, the side of going up the anchor clamps base is provided with dodges the groove to prevent the interference of sample and last anchor clamps body. The base of the lower fixture body is provided with a sliding plate, and the purpose of the base is to adjust the position of the sliding plate to keep the test sample in a vertical state all the time when the test samples with different diameters of wires and cables are used for experiments. The device simple structure, convenient to use can be according to the different customization adapter of the pulling force machine producer of purchasing in the market, and market universalization degree is higher.

Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made to the specific embodiments of the utility model without departing from the spirit and scope of the utility model, which is intended to be covered by the claims.

Claims (10)

1. The utility model provides a device for crowded insulating cable shielding layer peeling test, includes anchor clamps body (1), lower anchor clamps body (3), its characterized in that:

the upper clamp body (1), the cable sample (2) and the lower clamp body (3) are sequentially connected from top to bottom;

the upper clamp body (1) comprises an upper clamp base (4), and the upper clamp base (4) is connected with the first adapter (51) through an adjusting nut (6); a first clamping plate (7) is arranged on one side of the upper clamp base (4), and an avoidance groove is arranged on the other side of the upper clamp base; the first clamping plate (7) is connected with the second clamping plate (8) through a first spring (11), the second clamping plate (8) is connected with the first fixing plate (12) through a first guide rod (9), and a first adjusting handle (10) is arranged on one side of the first fixing plate (12); the lower fixture body (3) comprises a lower fixture fixed base (13), a fourth clamping plate (20), a second spring (19), a third clamping plate (18), a second guide rod (17), a second fixing seat (16) and a second adjusting handle (15) are arranged on the lower fixture fixed base (13), and a second adapter (52) is arranged on the bottom surface of the lower fixture fixed base (13).

2. An apparatus for use in a squeeze-pack insulated cable barrier peel test according to claim 1, wherein:

the upper clamp base (4) is L-shaped, threaded holes matched with the first adapter (51) are formed in the top of the upper clamp base (4), and guide rod connecting holes matched with the first clamping plate (7) are symmetrically formed in the bottom of the upper clamp base (4).

3. An apparatus for use in a squeeze-pack insulated cable barrier peel test according to claim 1, wherein:

the bottom of the first adapter (51) is connected with the upper clamp base (4) through a screw pair, and the adjusting nut (6) can be locked when the first adapter (51) is matched with the upper clamp base (4) to a proper position;

the top of the first adapter (51) is provided with a pin hole.

4. An apparatus for use in a squeeze-pack insulated cable barrier peel test according to claim 1, wherein:

the first clamping plate (7), the second clamping plate (8) and the first fixing plate (12) are symmetrically provided with first guide rod (9) mounting holes matched with the upper clamp base (4);

the first clamping plate (7) and the second clamping plate (8) are provided with teeth which are meshed with each other and can be used for clamping a sample.

5. An apparatus for use in a squeeze-pack insulated cable barrier peel test according to claim 1, wherein:

a threaded hole matched with the first adjusting handle (10) is formed in the middle of the first fixing plate (12);

the first adjusting handle (10) is T-shaped, and one threaded end of the first adjusting handle is matched with the threaded pair of the first fixing plate (12).

6. An apparatus for use in a squeeze-pack insulated cable barrier peel test according to claim 1, wherein:

the top of the lower clamp fixing base (13) is provided with bolt fixing holes corresponding to the second fixing base (16) and the fourth clamping plate (20).

7. An apparatus for use in a squeeze-pack insulated cable barrier peel test according to claim 1, wherein:

the side part of the lower clamp fixing base (13) is provided with a high scaffold screwing screw (21);

the bottom of the lower fixture fixing base (13) is provided with a chute structure, and the chute structure is provided with a sliding plate (14) matched with the chute.

8. An apparatus for use in a squeeze-pack insulated cable barrier peel test according to claim 7, wherein:

the sliding plate (14) is matched with the chute in shape, and a threaded hole matched with the second adapter (52) is formed in the middle of the sliding plate (14).

9. An apparatus for use in a squeeze-pack insulated cable barrier peel test according to claim 1, wherein:

the two ends of the second fixing seat (16) are symmetrically provided with second guide rod (17) connecting holes, and the middle of the second fixing seat (16) is provided with a threaded hole matched with the second adjusting handle (15);

the second adjusting handle (15) is T-shaped, and one threaded end of the second adjusting handle is matched with a threaded pair of the second fixing seat (16).

10. An apparatus for use in a squeeze-pack insulated cable barrier peel test according to claim 1, wherein:

the clamping device is characterized in that connecting holes of second guide rods (17) are symmetrically formed in two ends of the fourth clamping plate (20), a plurality of groups of clamping heads are arranged in the middle of the fourth clamping plate (20) and the middle of the third clamping plate (18) in a protruding mode, one ends of the clamping heads are V-shaped openings, and sawtooth structures are arranged on the clamping heads.