CN109361184B - Tension-resistant insulating tension wire clamp and application method thereof - Google Patents
Tension-resistant insulating tension wire clamp and application method thereof Download PDFInfo
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- CN109361184B CN109361184B CN201811307746.1A CN201811307746A CN109361184B CN 109361184 B CN109361184 B CN 109361184B CN 201811307746 A CN201811307746 A CN 201811307746A CN 109361184 B CN109361184 B CN 109361184B
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000012212 insulator Substances 0.000 claims abstract description 38
- 238000004806 packaging method and process Methods 0.000 claims abstract description 12
- 238000005538 encapsulation Methods 0.000 claims abstract description 11
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 13
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000002788 crimping Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/02—Devices for adjusting or maintaining mechanical tension, e.g. take-up device
Landscapes
- Cable Accessories (AREA)
- Insulating Bodies (AREA)
Abstract
A tension-resistant insulating tension wire clamp and a use method thereof. Relates to the field of electric power fittings, in particular to a tension-resistant insulating tensioning wire clamp suitable for connecting a live cable with an uncharged inhaul cable. The insulating lightning protection device has the advantages of being simple in structure and having an insulating lightning protection function; and the tension-resistant insulating tension wire clamp has strong tension bearing capability and good insulativity. The insulation rod comprises a cylindrical insulation rod, a pair of wedge clamps connected to two ends of the insulation rod, and an encapsulation insulator for encapsulating the wedge clamps and the insulation rod; the two ends of the cylindrical insulating rod are respectively inserted into the cylindrical cavity section to form an integrated structure that the middle and two ends of the cylindrical insulating rod are respectively inserted with wedge clamps; the packaging insulator is fixedly arranged on the exposed surface of the cylindrical insulating rod and the outer surfaces of the tail parts of the cylindrical cavity sections at the two ends. The invention has simple structure and strong bearing capacity, connects two ends of the cable divided into two sections, and ensures the safety of the cable grounding end.
Description
Technical Field
The invention relates to the field of electric power fittings, in particular to a tension-resistant insulating tension wire clamp suitable for connecting a live cable with an uncharged inhaul cable and a use method thereof.
Background
The transmission conductors are supported by transmission towers, such as "towers" for high voltage levels and "wood poles" or "cement poles" for low voltage levels, such as those found in residential areas, collectively referred to as "towers". When the cable is not arranged on a straight line, unbalanced load tension is formed on the tower, and stability and safety of the tower are affected. For balancing the 'towers', steel ropes are generally used for obliquely pulling down from the 'towers' high position, and are fixed on the ground. Although the steel cable is not electrified, the creepage distance is increased by using an insulator in the overhead transmission line to prevent the electric charge from descending, sometimes the insulation effect of the insulator cannot be completely ensured, and if the insulator of the insulator does not reach the standard, the steel cable is forced to be electrified, and even static electricity can generate great potential safety hazard.
The better solution is to divide the steel cable into an upper section and a lower section, and connect the upper section and the lower section in an insulating way by using a wire clamp. The requirements for the wire clamp are two: 1. insulation, second, sufficient capacity to withstand axial tension of the steel cord.
No insulating clamps suitable for tensioning of the wire rope have been found in the prior art. For example, in the chinese patent entitled "insulating and tension-resistant integrated wire clip" and application number "2016211822856", for ensuring the insulating function of an insulator in a severe environment, the following technical scheme is disclosed: the strain clamp comprises a strain clamp body and a composite insulator body, wherein the strain clamp body is connected with one end of the composite insulator body through a crimping sleeve; the strain clamp body comprises a pressing block and a clamp body, and the pressing block is connected with the clamp body through a connecting piece; the composite insulator body comprises a resin insulation rod, a silica gel composite insulator dish and a crimping sleeve connector, wherein the resin insulation rod is arranged on the inner wall of the silica gel composite insulator dish, and the crimping sleeve connector is movably connected to the resin insulation rod. In addition, the name of the jumper connection insulator is 201110324176.9, and the application number of the jumper connection insulator is for solving the problems of complex connection installation of jumper sections on a distribution line, poor safety, unattractive line and the like, and the disclosed technical scheme comprises an insulator body, a parallel groove clamp and an insulation shield; the high-voltage end hardware fitting of the insulator body is provided with a stud, the stud penetrates through a corresponding through hole in the parallel groove clamp to fix the parallel groove clamp, two corresponding wire pressing grooves are formed in the parallel groove clamp, and the insulation shield wraps the parallel groove clamp and all metal exposed parts at the upper end of the insulator body. The technical proposal of the two patents solves the problem of connection of overhead transmission wires and can not solve the problem that a grounding cable is possibly electrified.
In addition, a plurality of line terminals are arranged, and at present, a common type of insulating strain clamp is adopted, so that the structural design is often very complex in order to meet the basic requirements on insulativity and lightning protection.
SUMMARY OF THE PATENT FOR INVENTION
Aiming at the problems, the invention provides the lightning protection device with the insulation function and simple structure; tension-resistant insulating tension wire clamp with strong tension bearing capability and good insulativity and application method thereof.
The technical scheme of the invention is as follows:
a tension-resistant insulating tension wire clamp comprises a cylindrical insulating rod, a pair of wedge wire clamps connected to two ends of the insulating rod, and an encapsulation insulator encapsulating the wedge wire clamps and the insulating rod;
the inclined wedge wire clamp comprises a wire clamp body and a pair of inclined wedges, wherein the wire clamp body is hollow, and an inclined wedge cavity section and a cylindrical cavity section are arranged in the wire clamp body; the head end of the inclined wedge cavity section is provided with a plug wire port for plugging a cable, and the tail end of the cylindrical cavity section is provided with a plug rod port; the whole inclined wedge block is tile-shaped, the section of the inclined wedge block is semi-annular, the semi-annular middle part is a plug wire semi-hole, and a plurality of hole face inverted teeth are arranged on the hole face of the plug wire semi-hole; the conical surface taper of the outer surface of the inclined wedge is matched with the taper of the inner surface of the inclined wedge cavity section, and the length of the inclined wedge is smaller than that of the inclined wedge cavity section, so that the inclined wedge can freely move axially and circumferentially in the inclined wedge cavity section;
the two ends of the cylindrical insulating rod are respectively inserted into the cylindrical cavity section to form an integrated structure that the middle and two ends of the cylindrical insulating rod are respectively inserted with wedge clamps;
the packaging insulator is fixedly arranged on the exposed surface of the cylindrical insulating rod and the outer surfaces of the tail parts of the cylindrical cavity sections at the two ends.
The outer edge of the rod inserting opening at the tail end of the cylindrical cavity section is provided with a convex ring.
And a plurality of annular ribs and longitudinal ribs are arranged on the outer surface of the inclined wedge wire clamp.
The cylindrical insulating rod is cylindrical, external threads are respectively arranged at two ends of the cylindrical insulating rod, and the inserting rod opening is provided with internal threads matched with the cylindrical insulating rod.
The section of the cylindrical insulating rod is in a regular polygon shape, and the rod inserting opening is in a regular polygon shape matched with the rod inserting opening.
At least two rings of umbrella-shaped wings are arranged on the packaging insulator.
The outer diameters of the adjacent umbrella-shaped fins are in high-low fall.
The application method of the tension-resistant insulating tension wire clamp comprises the following steps:
1) Inserting the tail end of the first cable into the first plug wire port;
2) Reversely tensioning the first cable;
3) Inserting the head end of the second cable into the second plug wire port;
4) Reversely tensioning the second cable and loading pulling force;
5) And (5) finishing.
The beneficial effects of the invention are: the cable clamping device comprises a cylindrical insulating rod, a pair of wedge clamps and an encapsulation insulator, wherein the pair of wedge clamps are connected to two ends of the insulating rod in an integrated structure, the encapsulation insulator encapsulates the pair of wedge clamps and the insulating rod, a pair of wedge blocks are arranged in the wedge clamps, inverted teeth are arranged on the inner walls of the wedge blocks, when the cable clamping device is used, a cable is inserted between the pair of wedge blocks from plug wire ports at two ends, and then the cable clamping device is tightly tensioned by force, so that the outer walls of the pair of wedge blocks are propped against the cable clamping body, and the inner walls tightly clamp the cable, so that enough tension is given to the cable at two ends of the cable clamp; the insulating rod and the packaging insulator are positioned in the middle of the pair of wedge wire clamps, so that the possibility of electrification of the cable grounding end is effectively eliminated, umbrella-shaped fins are arranged on the packaging insulator, the outer diameters of the adjacent umbrella-shaped fins are high and low, the creepage distance is prolonged, and the point on the cable and lightning do not reach the bottom; the protruding circle is established to the outer fringe of the plunger mouth of fastener body, increases the joint strength of encapsulation, guarantees that the fastener is whole to possess sufficient bearing capacity. The invention has simple structure and strong bearing capacity, connects two ends of the cable divided into two sections, and ensures the safety of the cable grounding end.
Drawings
Figure 1 is a schematic view of the structure of the present invention,
figure 2 is a schematic view of the structure of the body of the line clip of the present invention,
figure 3 is a cross-sectional view A-A of figure 2,
figure 4 is a schematic view of the construction of the wedge block of the present invention,
figure 5 is a left side view of figure 4,
figure 6 is a bottom view of figure 5,
figure 7 is a schematic view of the structure of an insulating rod in the present invention,
figure 8 is a left side view of figure 7,
figure 8-1 is a left side view of the alternative embodiment of figure 7,
figure 9 is a schematic view of an optimized embodiment of the invention in which the insulating rod and the wire clamp body are plugged,
figure 10 is a schematic view of the assembly process of the product of the invention,
figure 11 is a schematic diagram of the structure of the product of the present invention after assembly and before packaging,
FIG. 12 is a schematic view of the use of the finished product of the present invention;
in the figure, 1 is a wire clamp body, 11 is a wedge cavity section, 110 is a wire insertion port, 12 is a cylindrical cavity section, 120 is a rod insertion port, 121 is an internal thread, 13 is a ring rib, and 14 is a longitudinal rib;
2 is a wedge block, 21 is a plug wire half hole, and 210 is a hole face inverted tooth;
3 is an insulating rod, 31 is an external thread,
4 is the encapsulation insulator, 41 is the umbrella fin,
and 5 is a cable.
Detailed Description
The patent of the invention is described in detail below with reference to the accompanying drawings.
It should be noted that the words "bottom" and "top", "inner" and "outer" are used in the following description to refer to directions toward or away from, respectively, the geometric center of a particular component.
As shown in fig. 1-12, a tension-resistant insulating tension wire clamp comprises a cylindrical insulating rod 3, a pair of wedge wire clamps connected to two ends of the insulating rod 3, and an encapsulation insulator 4 encapsulating the wedge wire clamps and the insulating rod 3, wherein the insulating rod 3 and the encapsulation insulator 4 play an insulating role, and the electric charge at one end of the wire clamp is ensured not to flow to the other end;
the inclined wedge wire clamp comprises a wire clamp body 1 and a pair of inclined wedges 2, wherein as shown in fig. 2-3, the wire clamp body 1 is hollow, and an inclined wedge cavity section 11 and a cylindrical cavity section 12 are arranged in the wire clamp body; the head end of the inclined wedge cavity section 11 is provided with a plug wire port 110 for plugging the cable 5, and the tail end of the cylindrical cavity section 12 is provided with a plug rod port 120 for plugging the insulating rod 3; as shown in fig. 4-6, the whole inclined wedge 2 is tile-shaped, the cross section of the inclined wedge is semi-annular (smaller than a semicircle), the semi-annular middle part is a plug wire semi-hole 21, a plurality of hole face inverted teeth 210 are arranged on the hole face of the plug wire semi-hole 21, the hole face inverted teeth 210 can increase the holding force of the cable 5, and the cable 5 is convenient to hold in the plug wire hole and is not easy to separate; the conical surface taper of the outer surface of the inclined wedge block 2 is matched with the taper of the inner surface of the inclined wedge cavity section 11, and the length of the inclined wedge block 2 is smaller than that of the inclined wedge cavity section 11, so that before a cable 5 is inserted, the inclined wedge block 2 can freely move axially and circumferentially in the inclined wedge cavity section 11 (the circumferential movement comprises radial translation movement, namely, cable 5 is fastened, and rotation movement is convenient for inserting the cable 5);
the two ends of the cylindrical insulating rod 3 are respectively inserted into the cylindrical cavity sections 12, the packaging insulator 4 is fixedly arranged on the exposed surface of the cylindrical insulating rod 3 and the outer surfaces of the tail parts of the cylindrical cavity sections 12 at the two ends, and an integrated structure is formed that the cylindrical insulating rod 3 and the packaging insulator 4 are respectively inserted into inclined wedge clamps at the middle and two ends.
The outer edge of the rod inserting opening 120 at the tail end of the cylindrical cavity section 12 is provided with a convex ring, so that the connection strength of the wire clamp body 1 and the packaging insulator 4 is increased, the wire clamp body and the packaging insulator are prevented from being separated, and the whole wire clamp is guaranteed to have enough bearing capacity.
The outer surface of the inclined wedge wire clamp is provided with a plurality of annular ribs 13 and longitudinal ribs 14, so that the structural strength of the inclined wedge wire clamp is improved, and the service life of the inclined wedge wire clamp is prolonged.
As shown in fig. 7, 8 and 9, the cylindrical insulating rod 3 is cylindrical, two ends of the cylindrical insulating rod are respectively provided with external threads, and the plunger opening 120 is provided with internal threads 121 matched with the external threads. The connecting strength of the tail parts of the insulating rod 3 and the wire clamp body 1 is increased, the stress of the insulator is reduced, and the wire clamp is prevented from being damaged and failed due to insufficient stress of the insulator. And the screw thread can fix the position, guarantee that encapsulation position is accurate, can not crooked.
As shown in fig. 8-1, the section of the cylindrical insulating rod 3 is in a regular polygon shape, and the rod inserting opening 120 is in a regular polygon shape matched with the section.
At least two rings of umbrella-shaped fins 41 are arranged on the packaging insulator 4. The outer diameters of the adjacent umbrella-shaped fins 41 are in height difference. The creepage distance is prolonged, and the overall insulation performance is further ensured.
As shown in fig. 10-11 (arrows and i, ii, iii in the figures respectively indicate the plugging direction and sequence), the assembly process of the components of the present invention is: two pairs of inclined wedges 2 are respectively inserted into inclined wedge cavity sections 11 of two wire clamp bodies 1, then two ends of an insulating rod are respectively inserted into cylindrical cavity sections 12 of the two wire clamp bodies 1, and finally an insulating body 4 is injection-molded and packaged.
As shown in fig. 12, a method for using a tension-resistant insulating tension wire clip includes the following steps:
1) Inserting the tail end of the first cable into the first plug wire port;
2) The first cable is reversely tensioned, the force is as large as possible and the speed is as high as possible during the reverse tensioning, so that the cable is tightly connected with the inclined wedge; arrows F1, F2 in fig. 12 indicate that the force is small when inserted and large when pulled out.
3) Inserting the head end of the second cable into the second plug wire port;
4) The second cable is reversely tensioned, and tension is loaded, so that the cable and the wire clamp are tensioned and cannot retract;
5) And (5) finishing.
Claims (8)
1. The tension-resistant insulating tension wire clamp is characterized by comprising a cylindrical insulating rod, a pair of wedge wire clamps connected to two ends of the insulating rod, and an encapsulation insulator encapsulating the wedge wire clamps and the insulating rod;
the inclined wedge wire clamp comprises a wire clamp body and a pair of inclined wedges, wherein the wire clamp body is hollow, and an inclined wedge cavity section and a cylindrical cavity section are arranged in the wire clamp body; the head end of the inclined wedge cavity section is provided with a plug wire port for plugging a cable, and the tail end of the cylindrical cavity section is provided with a plug rod port; the whole inclined wedge block is tile-shaped, the section of the inclined wedge block is semi-annular, the semi-annular middle part is a plug wire semi-hole, and a plurality of hole face inverted teeth are arranged on the hole face of the plug wire semi-hole; the conical surface taper of the outer surface of the inclined wedge is matched with the taper of the inner surface of the inclined wedge cavity section, and the length of the inclined wedge is smaller than that of the inclined wedge cavity section, so that the inclined wedge can freely move axially and circumferentially in the inclined wedge cavity section;
the two ends of the cylindrical insulating rod are respectively inserted into the cylindrical cavity section to form an integrated structure that the middle and two ends of the cylindrical insulating rod are respectively inserted with wedge clamps;
the packaging insulator is fixedly arranged on the exposed surface of the cylindrical insulating rod and the outer surfaces of the tail parts of the cylindrical cavity sections at the two ends.
2. The tension insulating tensioning clamp according to claim 1, wherein a bead is provided on the outer edge of the rod insertion opening at the tail end of the cylindrical cavity section.
3. The tension-resistant insulating tensioning wire clamp according to claim 1, wherein a plurality of annular ribs and longitudinal ribs are arranged on the outer surface of the inclined wedge wire clamp.
4. The tension-resistant insulating tension wire clamp according to claim 1, wherein the cylindrical insulating rod is cylindrical, external threads are respectively arranged at two ends of the cylindrical insulating rod, and the insert rod opening is provided with internal threads matched with the cylindrical insulating rod.
5. The tension insulating tension clamp according to claim 1, wherein the section of the cylindrical insulating rod is in a regular polygon shape, and the plug opening is in a regular polygon shape matched with the plug opening.
6. The tension insulator tensioning clamp of claim 1, wherein the encapsulation insulator is provided with at least two rings of umbrella-shaped fins.
7. The tension insulating tension clamp as recited in claim 6, wherein the outer diameters of adjacent said umbrella fins are in a height difference.
8. A method of using the tension-resistant insulated tension clamp of claim 1, comprising the steps of:
1) Inserting the tail end of the first cable into the first plug wire port;
2) Reversely tensioning the first cable;
3) Inserting the head end of the second cable into the second plug wire port;
4) Reversely tensioning the second cable and loading pulling force;
5) And (5) finishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811307746.1A CN109361184B (en) | 2018-11-05 | 2018-11-05 | Tension-resistant insulating tension wire clamp and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811307746.1A CN109361184B (en) | 2018-11-05 | 2018-11-05 | Tension-resistant insulating tension wire clamp and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109361184A CN109361184A (en) | 2019-02-19 |
| CN109361184B true CN109361184B (en) | 2023-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811307746.1A Active CN109361184B (en) | 2018-11-05 | 2018-11-05 | Tension-resistant insulating tension wire clamp and application method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN109361184B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111817038B (en) * | 2020-07-28 | 2022-03-08 | 沈艳阳 | Pressure-free convenient splicing sleeve and splicing method thereof |
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| CN101924337A (en) * | 2009-06-12 | 2010-12-22 | 上海兆邦电力器材有限公司 | Taper type anti-skidding strain clamp |
| CN201717578U (en) * | 2010-02-21 | 2011-01-19 | 南京线路器材厂 | Wedge-shaped insulation strain clamp for overhead distribution circuit |
| CN201789082U (en) * | 2010-08-26 | 2011-04-06 | 河南非晶电气有限公司 | Novel jointing clamp |
| CN202633866U (en) * | 2012-06-19 | 2012-12-26 | 永久电力金具有限公司 | Insulated strain clamp with plastic shell |
| CN204947530U (en) * | 2015-10-10 | 2016-01-06 | 国网山东省电力公司日照供电公司 | A kind of strain clamp |
| CN105990809A (en) * | 2016-05-02 | 2016-10-05 | 胡小青 | Wedge-shaped wire clamp |
| CN106099803A (en) * | 2016-05-02 | 2016-11-09 | 胡小青 | Wedge shape power line clamp |
| KR20170036319A (en) * | 2015-09-24 | 2017-04-03 | 제룡산업 주식회사 | Insulating cover-integrated cable connector |
| CN208874231U (en) * | 2018-11-05 | 2019-05-17 | 江苏畅源电气设备有限公司 | Strain insulator insulation tenses wire clamp |
-
2018
- 2018-11-05 CN CN201811307746.1A patent/CN109361184B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH698181B1 (en) * | 2005-02-07 | 2009-06-15 | Wermelinger Ag A | Cable termination. |
| CN201247938Y (en) * | 2008-06-24 | 2009-05-27 | 固力发电气有限公司 | Wedge type strain clamp |
| DE102009010928A1 (en) * | 2009-02-12 | 2010-08-19 | Wermelinger, Anton | Device for power engineering for connection of bus bars or cables, has base structure provided with multiple isolation rods processed between fixing armature and conductor connection armature |
| CN101924337A (en) * | 2009-06-12 | 2010-12-22 | 上海兆邦电力器材有限公司 | Taper type anti-skidding strain clamp |
| CN201717578U (en) * | 2010-02-21 | 2011-01-19 | 南京线路器材厂 | Wedge-shaped insulation strain clamp for overhead distribution circuit |
| CN201663412U (en) * | 2010-04-06 | 2010-12-01 | 红光电气集团有限公司 | Wedged strain clamp |
| CN201789082U (en) * | 2010-08-26 | 2011-04-06 | 河南非晶电气有限公司 | Novel jointing clamp |
| CN202633866U (en) * | 2012-06-19 | 2012-12-26 | 永久电力金具有限公司 | Insulated strain clamp with plastic shell |
| KR20170036319A (en) * | 2015-09-24 | 2017-04-03 | 제룡산업 주식회사 | Insulating cover-integrated cable connector |
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| CN208874231U (en) * | 2018-11-05 | 2019-05-17 | 江苏畅源电气设备有限公司 | Strain insulator insulation tenses wire clamp |
Also Published As
| Publication number | Publication date |
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| CN109361184A (en) | 2019-02-19 |
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Inventor after: Guo Shanlin Inventor after: Meng Liang Inventor after: Wang Kunquan Inventor before: Wang Kunquan Inventor before: Guo Shanlin |
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